WO2013108473A1 - Air bag device - Google Patents

Air bag device Download PDF

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Publication number
WO2013108473A1
WO2013108473A1 PCT/JP2012/079452 JP2012079452W WO2013108473A1 WO 2013108473 A1 WO2013108473 A1 WO 2013108473A1 JP 2012079452 W JP2012079452 W JP 2012079452W WO 2013108473 A1 WO2013108473 A1 WO 2013108473A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
airbag
seat
tension member
protection device
Prior art date
Application number
PCT/JP2012/079452
Other languages
French (fr)
Japanese (ja)
Inventor
松下徹也
Original Assignee
オートリブ ディベロップメント エービー
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by オートリブ ディベロップメント エービー filed Critical オートリブ ディベロップメント エービー
Priority to JP2013554190A priority Critical patent/JP5793203B2/en
Publication of WO2013108473A1 publication Critical patent/WO2013108473A1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/207Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in vehicle seats
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/18Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags the inflatable member formed as a belt or harness or combined with a belt or harness arrangement
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R2021/161Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by additional means for controlling deployment trajectory
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/231Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334Expansion control features
    • B60R21/2338Tethers
    • B60R2021/23386External tether means

Definitions

  • the present invention relates to an airbag device provided with an airbag that inflates and deploys to the side of an occupant of a vehicle seat at the time of a side collision of the vehicle.
  • the occupant moves in the vehicle width direction.
  • a vehicle such as a vehicle or a power pole
  • a passenger on the collision object contact side near side passenger; in this case, passenger on the passenger seat
  • An occupant (far-side occupant; in this case, a driver-side occupant) far away from the vehicle moves greatly due to inertia and collides with a near-side occupant or a hard object in the passenger compartment, resulting in an obstacle.
  • an airbag device that includes an airbag that inflates and deploys between a driver seat and a passenger seat, and that protects an occupant moving toward the center of the vehicle due to an impact from the lateral direction.
  • Patent Document 1 proposes an airbag that inflates and deploys between a driver seat and a passenger seat, and that protects an occupant moving toward the center of the vehicle due to an impact from the lateral direction.
  • Patent Document 1 describes an airbag device in which an airbag that expands and deploys upward (so-called far-side airbag) is stored in a center console disposed between a driver seat and a passenger seat. Yes.
  • the side airbag deployed near the side door is supported by the side door even when the occupant is received, so that it stays in the inflated and deployed position and can absorb the impact.
  • the airbag device deployed on the far side as described in Patent Document 1 is not supported by an object such as a side door, even if it is inflated and deployed, it falls down due to the impact of catching the occupant, and there is a problem in absorbing the impact. There is a possibility of coming out.
  • ultra-compact EVs electric vehicles
  • This ultra-compact EV is a vehicle including, for example, one vehicle seat, and an airbag device that protects an occupant who moves to the side of the vehicle seat in a side collision or the like is required.
  • the present invention has been made in view of such a problem, and an object of the present invention is to provide an airbag device capable of receiving and protecting an occupant more reliably on the side of a vehicle seat in a side collision.
  • a typical configuration of an airbag device is provided in a seat back of a vehicle seat including a seat back and a seat cushion, and uses a gas supplied from an inflator.
  • An airbag that inflates and deploys to the side of the occupant of the vehicle seat, and a tension member that is disposed on a side surface of the vehicle seat and is provided from the seat back toward the front of the vehicle of the seat cushion when the airbag is deployed.
  • the airbag When the airbag is deployed, there is a detour portion that goes around from the shortest distance of the route by the inflating airbag in the middle of the route of the tension member extending along the side surface of the vehicle seat from the seat back to the front of the seat cushion.
  • the airbag and the tension member are arranged on the vehicle seat so as to occur in the tension member. And butterflies.
  • the path of the tension member that extends along the side surface of the vehicle seat is a path that goes away from the shortest distance from the seat back to the front of the seat cushion by the inflating airbag. That is, the tension member is pushed to the side of the vehicle seat by the airbag that inflates and deploys to the side of the vehicle seat occupant, and the above-described detour portion is generated along, for example, the surface of the airbag.
  • the pulling member has a detoured portion so that the tension member is slackened and is stretched from the seat back toward the front of the vehicle. Therefore, the tension member supports the occupant, for example, the thigh and the waist from the side of the vehicle seat.
  • an occupant moving to the side of the vehicle seat due to a side collision or the like is received by the airbag and the tension member that supports the airbag.
  • the airbag absorbs the shock appropriately without falling down, so that the occupant can be protected more reliably.
  • the tension member may be given tension by a deployed airbag.
  • the tension member is pulled by the airbag that is inflated and deployed, and slack is taken.
  • deployed airbag supports the expand
  • a mechanism such as pulling the tension member using an appropriate actuator and applying tension to the tension member becomes unnecessary, and the configuration is simplified. it can.
  • the tension member has one end attached to the upper part of the seat back and the other end attached from the vicinity of the waist of an adult occupant seated in a side view to the front part of the seat cushion. Good.
  • the tension member moves the region between the waist portion of the adult occupant and the thigh, for example, between the one end portion and the other end portion when the airbag is deployed, to the side of the vehicle seat via the airbag. It can be supported from one side.
  • the adult occupant in this application includes adult men and women having a general average physique and even small adult women.
  • the physiques of these adult occupants are determined by automobile safety standards (frontal collision dummy AF05, AM50, side collision dummy SID-IIs, ES-2, etc.) in each country.
  • a place such as a part indicates the position of each part of the dummy.
  • the tension member extends along the side surface of the vehicle seat, and one end and the other end are provided outside the airbag. For this reason, in the said structure, since it is not necessary to provide a tension member in the inside of an airbag, installation of an airbag apparatus etc. become easy and can further simplify a structure.
  • the other end of the tension member may extend from one side surface of the seat cushion toward the other side surface and be attached to the inside of the seat cushion.
  • the tension member when the adult occupant sitting on the seat cushion moves to one side surface of the seat cushion due to a side collision or the like, the tension member reaches from the one side surface of the seat cushion to the other end portion. Part of the range will hit the adult occupant's thigh directly. For this reason, a part of the tension member is pressed by the thigh due to the movement of the adult occupant, and the tension applied to the tension member increases. As a result, the tension member can more reliably support the inflated and deployed airbag from the side of the vehicle seat, and can more reliably protect the occupant.
  • the tension member has one end attached to the upper part of the seat back and the other end between the vicinity of the waist of an adult occupant seated in a side view and the front part of the seat cushion, and from the seat cushion. It is good to be attached to the part located in the vehicle lower part.
  • the part located below the seat cushion to which the other end portion of the tension member is attached includes a rail under the seat cushion, a floor surface of the vehicle, and the like.
  • the pulling member may be attached through a corresponding portion between the waist and thighs of an adult occupant seated in a side view when the airbag is deployed.
  • the tension member supports the region from the side of the waist of the adult occupant to the thigh between the one end and the other end from the side of the vehicle seat, and the occupant is more reliably secured. Can take it.
  • the tension member is a belt-like member that is attached to the side surface of the vehicle seat from the seat back to the seat cushion, and is provided so as to overlap the airbag on the outer side when viewed from the occupant seated on the vehicle seat. There should be.
  • the tension member which is a belt-like member, is provided so as to overlap with the airbag on the outside as viewed from the occupant, so that the airbag can be supported from the side of the vehicle seat. Further, since the belt-like member is attached to the side surface of the vehicle seat before the airbag is inflated and deployed, it does not interfere with the occupant.
  • the intermediate portion of the tension member is detached from the vehicle seat by the airbag that is inflated and deployed, the slack is removed by the airbag that is inflated, and the airbag is seated back by the tension generated in the tension member. It is good to have a length that can be pressed against the surface. As a result, the tension member is pressed by the inflated and deployed airbag and given tension, and the airbag can be pressed against the seat back.
  • the intermediate portion of the tension member is a portion other than one end and the other end.
  • the above-described airbag device may further include a guide portion that guides the tension member on the outside as viewed from the occupant seated on the vehicle seat of the airbag. This prevents the airbag from inflating and deploying through the tension member. Therefore, the tension member can more reliably support the inflated and deployed airbag from the side of the vehicle seat.
  • One end of the pulling member is attached to the first attachment point of the seat back, and the airbag has an edge that is higher in the vehicle vertical direction than the first attachment point when inflated and deployed. Good.
  • the tension member is folded back by the edge of the airbag that is higher than the first attachment point, so that the slack is removed and the tension is applied more quickly. It is done.
  • the detour portion of the tension member may be a portion present at a position where the height in the vehicle vertical direction is higher than the first attachment point.
  • pulling member turns into a path
  • the pulling member is detoured along the surface of the airbag by the inflating airbag, and a slack is taken by the detoured portion so that the airbag is sandwiched.
  • the tension member is tensioned from the inflating airbag.
  • the above-described airbag may have a reinforcing structure in a region that comes into contact with the tension member when inflated and deployed, and the reinforcing structure may be formed by reinforcing sewing or a reinforcing cloth.
  • the airbag described above is preferably provided at a predetermined position of the seat back or has a predetermined shape so as to support at least a shoulder portion of an adult occupant when inflated and deployed in a side view. Thereby, since an airbag restrains a passenger
  • the airbag may be provided at a predetermined position of the seat back or have a predetermined shape so as to cover the head of the adult occupant when inflated and deployed in a side view.
  • the airbag not only restrains the occupant's shoulder, but also covers the head, thereby restricting the movement of the head and preventing the head from colliding with a hard object in the passenger compartment, for example.
  • the above-described airbag device may further include a rotation fixture that rotatably attaches at least the other end of the tension member to the vehicle seat.
  • a rotation fixture that rotatably attaches at least the other end of the tension member to the vehicle seat.
  • the direction in which the tension member is passed from one end to the other end changes.
  • at least the other end of the tension member rotates, so the direction can be changed without being twisted, and the tension member is stable in the same wide state as before the airbag inflating and deploying.
  • the airbag can be supported.
  • a plurality of the vehicle seats are provided in the vehicle width direction, the airbag is embedded in a side surface of the vehicle seat in the vehicle width direction in the vehicle width direction, and the pulling member passes through the vehicle center side of the airbag. It is good to be provided. Thereby, the airbag inflated and deployed on the vehicle center side of the vehicle seat is supported from the vehicle center side by the tension member. Therefore, an occupant who moves toward the center of the vehicle due to a side collision or the like can be received by the airbag and the tension member that supports the airbag.
  • a plurality of the vehicle seats are provided in the vehicle width direction, and the other end of the tension member extends from the side surface of the seat cushion toward the side of the vehicle outside and is attached to the inside of the seat cushion. It is good to have been.
  • a part of the range of the tension member from the side surface on the vehicle center side to the other end of the seat cushion is moved to the vehicle center side by a side collision or the like. It directly hits the thigh of a moving adult occupant. For this reason, a tension
  • the tension member can more reliably support the inflated and deployed airbag from the vehicle center side, and can more reliably protect the occupant.
  • the vehicle seat is provided only in the vehicle width direction, and the other end of the tension member extends from one side surface of the seat cushion in the vehicle width direction toward the other side surface of the vehicle. It is good to be installed in the inside.
  • a vehicle for example, a single-seater electric vehicle, so-called ultra-compact EV
  • ultra-compact EV in which only one vehicle seat is provided in the vehicle width direction, from one side surface of the seat cushion in the vehicle width direction of the tension member.
  • a part of the range reaching the other end part directly hits the thigh of an adult occupant moving to one side in the vehicle width direction due to a side collision or the like.
  • tensile_strength increases, when the tension member is pressed down by the thigh.
  • the tension member can more reliably support the inflated airbag from one side in the vehicle width direction, and can more reliably protect the occupant.
  • an airbag device capable of more reliably receiving and protecting an occupant on the side of a vehicle seat in the event of a side collision.
  • FIG. 1 It is a figure which shows a part of vehicle to which the airbag apparatus in embodiment of this invention is applied. It is a figure which illustrates the state in which the airbag apparatus of FIG. 1 was accommodated. It is a figure which illustrates the state which the airbag apparatus of FIG. 2 expanded and expanded. It is a figure which illustrates the state which looked at the air bag device of Drawing 3 from the vehicles front side. It is a figure which illustrates the airbag of the airbag apparatus of FIG. It is a figure which illustrates the state which the other airbag apparatus expanded and expanded. It is a figure which illustrates the state in which the other airbag apparatus was accommodated, and the state which expand
  • FIG. 1 is a view showing a part of a vehicle 110 to which an airbag device 100 according to an embodiment of the present invention is applied.
  • the airbag apparatus 100 is embedded in the side surface of the vehicle seat 120 on the vehicle center side, for example, as indicated by a dotted line in the figure.
  • the vehicle seat 120 is a left front seat (for example, a passenger seat) in the vehicle 110, and includes a seat back 122 and a seat cushion 124 on which an occupant is seated.
  • the side door 130 is located on the vehicle outer side of the vehicle seat 120, and the vehicle seat 120A is disposed on the vehicle center side.
  • the vehicle seat 120A is a right front seat (for example, a driver's seat), and includes a seat back 122A and a seat cushion 124A.
  • the airbag device 100 may be embedded in the side surface of the vehicle seat 120A on the vehicle center side.
  • FIG. 2 is a diagram illustrating a state in which the airbag device 100 of FIG. 1 is accommodated.
  • the front side of the page is the vehicle center side
  • the back side of the page is the vehicle outside.
  • the airbag device 100 includes an airbag 140 embedded in the seat back 122 and a belt-like member 150 such as a belt (or tether) attached from the seat back 122 to the seat cushion 124.
  • a belt-like member 150 such as a belt (or tether) attached from the seat back 122 to the seat cushion 124.
  • the airbag 140 and the belt-shaped member 150 are shown to be visually recognized on the side surface of the vehicle seat 120 on the vehicle center side, but an appropriate cover that is torn along with the inflation and deployment of the airbag 140. It may be covered with.
  • the airbag 140 has a guide portion 142 having both ends 142 a and 142 b attached to the surface on the vehicle center side by sewing or the like.
  • the guide part 142 guides the belt-like member 150 so that the embedded airbag 140 and the belt-like member 150 overlap in a side view.
  • the belt-like member 150 passes through the surface of the airbag 140 on the vehicle center side while being guided by the guide portion 142.
  • the belt-like member 150 has an upper end (one end) 152 fixed at a first attachment point 156 via a through anchor 154 and a lower end (other end) 158 via a through anchor 160.
  • the second attachment point 162 is rotatably fixed.
  • the through anchors 154 and 160 are used as fixtures.
  • the present invention is not limited to this, and any appropriate fixture may be used as long as it is a so-called D-ring.
  • the first attachment point 156 is set on the seat frame 164 in the seat back 122.
  • the second attachment point 162 is located on the vehicle front side with respect to the first attachment point 156, and is set to an appropriate frame in the seat cushion 124, for example.
  • FIG. 3 is a diagram illustrating a state in which the airbag device 100 of FIG. 2 is inflated and deployed.
  • FIG. 3A shows a state in which the inflated airbag device 100 is viewed from the vehicle center side.
  • FIG. 3B shows the airbag 140 shown in FIG.
  • FIG. 4 is a diagram illustrating a state in which the airbag apparatus 100 of FIG. 3 is viewed from the front side of the vehicle. In the drawing, a dummy 166 simulating an occupant is shown. In FIG.
  • the vehicle 110 receives a lateral impact (see arrow A) due to a side collision
  • the dummy 166 receives a lateral impact (see arrow B) toward the vehicle center due to inertia.
  • the state which moves to the side is shown. That is, the flow line axis of the dummy 166 accompanying the side collision is the horizontal direction (that is, the vehicle width direction) indicated by these arrows A and B.
  • the airbag device 100 includes an inflator 168 shown in FIG. 3B in addition to the airbag 140 and the belt-like member 150.
  • an inflator 168 shown in FIG. 3B in addition to the airbag 140 and the belt-like member 150.
  • the operation of the airbag apparatus 100 at the time of a side collision will be described.
  • the airbag 140 is inflated and deployed on the vehicle center side of the vehicle seat 120 using the gas supplied from the inflator 168.
  • the belt-like member 150 is pushed by the airbag 140 that inflates and deploys toward the vehicle center side.
  • an appropriate cover that covers the side surface of the vehicle seat 120 on the vehicle center side is torn, and parts other than the upper end portion 152 and the lower end portion 158 of the belt-like member 150 are detached from the vehicle seat 120.
  • the edge portion (upper edge portion 144) of the inflated and deployed airbag 140 has the upper end portion 152 of the belt-like member 150 attached to the seat back 122 via the through anchor 154.
  • the height in the vehicle vertical direction is higher than the first attachment point 156.
  • the belt-like member 150 is folded back at the top portion 170 in contact with the upper edge portion 144 of the airbag 140 as shown in FIG.
  • the belt-like member 150 folded back at the top portion 170 detours along the surface of the inflated and deployed airbag 140 from the upper end portion 152 through the top portion 170 to the lower end portion 158, and sandwiches the airbag 140 therebetween. It becomes a shape.
  • the height of the first attachment point 156 in the vehicle vertical direction is indicated by a dotted line L.
  • the range of the belt-like member 150 at a position higher than the dotted line L is defined as a bypass portion 171.
  • the detour portion 171 has a range indicated by a halftone dot in the drawing from the upper end portion 152 through the top portion 170.
  • the belt-like member 150 has a length from the first attachment point 156 of the seat back 122 to the second attachment point 162 of the seat cushion 124 along the side surface of the vehicle seat 120. is doing. For this reason, the belt-like member 150 includes slack and cannot obtain a tension simply by detaching from the vehicle seat 120. However, as described above, the belt-like member 150 is folded back at the top portion 170 by the airbag 140 inflated and deployed toward the center of the vehicle, and along the surface of the airbag 140, a detour portion 171 is generated and slack is removed. It is done.
  • the belt-like member 150 extends along the side surface of the vehicle seat 120 from the seat back 122 to the front of the seat cushion 124. Then, when the airbag 140 is deployed, the belt-shaped member 150 is bypassed from the shortest distance of the route by the airbag 140 that is inflated in the middle of the route from the seat back 122 toward the front of the seat cushion 124 in the vehicle direction. Produce. As a result of the occurrence of the detour portion 171 and the sagging, the belt-like member 150 can receive the tension more quickly from the airbag 140 that is inflated and deployed, and can support the airbag 140 by pressing it against the seat back 122. Become.
  • the belt-like member 150 can be said to be a tension member to which tension is applied by being pulled by the deployed airbag 140 and taking up slack.
  • the tension member is not limited to the belt-like member 150 such as a belt as long as it is a member provided by the deployed airbag 140, and may be a string-like member or a cloth-like member having a wider and larger area. Furthermore, it may have a mesh shape as well as a densely woven fabric.
  • the lower end portion 158 of the belt-like member 150 is rotatably fixed by the through anchor 160 at the second attachment point 162 located on the vehicle front side with respect to the first attachment point 156.
  • the belt-like member 150 is separated from the vehicle seat 120 except for the upper end portion 152 and the lower end portion 158 (that is, the intermediate portion) due to the inflation and deployment of the airbag 140, the direction in which the belt-like member 150 is passed changes.
  • the lower end portion 158 of the band-shaped member 150 so as to be rotatable by the through anchor 160, the direction of the band-shaped member 150 can be changed without being twisted. Therefore, the belt-like member 150 can stably support the airbag 140 in a wide state similar to that before the inflation and deployment.
  • the belt-like member 150 extends obliquely downward in a wide state without being twisted toward the vehicle front side from the top portion 170 to the lower end portion 158. At this time, the belt-like member 150 overlaps the portion of the dummy 166 corresponding to, for example, between the waist and the thigh in a side view.
  • the guide portion 142 attached to the surface of the airbag 140 on the vehicle center side guides the belt-like member 150, thereby preventing the airbag 140 from passing through the belt-like member 150 and inflating and deploying.
  • the passenger protection performance is stabilized since the points on the surface of the airbag 140 where the tension of the belt-like member 150 acts can be prevented, the passenger protection performance is stabilized.
  • the airbag 140 overlaps the shoulder, chest, and part of the abdomen of the dummy 166 in a side view. That is, the airbag 140 is provided at a predetermined position of the seat back 122 or has a predetermined shape so as to support at least a shoulder portion of an adult occupant when inflated and deployed in a side view. Thereby, the airbag 140 will restrain a passenger
  • the predetermined position may be, for example, a position as close as possible to the upper end of the seat back 122.
  • the predetermined shape is a shape that is inclined upward toward the front side of the vehicle so that the upper edge portion 144 of the airbag 140 when inflated and deployed is higher than the shoulder portion of the dummy 166. It may be.
  • the belt-like member 150 that is pressed and applied with the tension by the inflated airbag 140 causes the airbag 140 to be inflated and deployed.
  • the airbag 140 is supported from the side, and the airbag 140 is pressed against the seat back 122 to restrict the movement of the airbag 140.
  • the belt-like member 150 supports a portion of the occupant from, for example, the waist to the thigh from the center of the vehicle at a location from the top 170 to the lower end 158.
  • the airbag device 100 an occupant who moves toward the center of the vehicle due to a side collision or the like is received by the airbag 140 and the belt-like member 150 that supports it. Therefore, according to the airbag device 100, since the airbag 140 appropriately absorbs the shock without falling down, compared to the case where the airbag 140 is received alone, the passenger can be more reliably protected.
  • the belt-like member 150 is attached to the side surface of the vehicle seat 120 on the vehicle center side before the airbag 140 is inflated and deployed, it does not interfere with the occupant when the seat back 122 is reclined or boarded / exited. .
  • FIG. 5 is a diagram illustrating the airbag 140 of the airbag device 100 of FIG. 3.
  • FIG. 5A shows a state in which the reinforcement sewing portion 146 is formed on the airbag 140.
  • FIG. 5B shows a state in which a separate reinforcing cloth 148 is attached to the airbag 140.
  • the airbag 140 shown in FIG. 5 (a) has a reinforcing sewing portion 146 in a region that comes into contact with the belt-like member 150 during inflation and deployment, in addition to the guide portion 142 having both ends 142a and 142b sewn on the surface on the vehicle center side.
  • the airbag 140 having the reinforced sewing portion 146 a region that comes into contact with the belt-like member 150 at the time of inflation and deployment is reinforced. That is, the airbag 140 can withstand friction with the belt-shaped member 150 by the reinforcing structure formed by the reinforcing sewing portion 146.
  • the airbag 140 shown in FIG. 5 (b) has a separate reinforcing cloth 148 that covers not only the region that contacts the belt-like member 150 during inflation and deployment, but also the periphery of this region.
  • both ends 142 a and 142 b of the guide portion 142 are sewn on the surface of the airbag 140 on the vehicle center side that overlaps the reinforcing cloth 148.
  • the airbag 140 having the reinforcing cloth 148 reinforces not only the region in contact with the belt-like member 150 during inflation and deployment, but also the periphery of the region. That is, the airbag 140 can sufficiently withstand the friction with the belt-shaped member 150 by the reinforcing structure formed by the separate reinforcing cloth 148.
  • the airbag 140 has a reinforcing structure formed by reinforcing sewing 146 or a separate reinforcing cloth 148, so that the airbag 140 is not deformed by contact with the band-shaped member 150 during inflation and deployment, and as a whole, the band-shaped member 150 Thus, the vehicle is reliably supported from the vehicle center side. Further, in the belt-like member 150, as shown in FIG. 3 (b), a sewing portion 172 or the like is formed at a location where the airbag 140 is in contact with the airbag 140, and the positional deviation from the airbag 140 is prevented when the airbag 140 is inflated and deployed. You may make it prevent.
  • FIG. 6 is a diagram illustrating a state where another airbag device 100A is inflated and deployed.
  • symbol is attached
  • the airbag device 100A differs from the airbag device 100 in that the airbag 140A covers the head of the dummy 166 when inflated and deployed in a side view.
  • the airbag 140 overlaps the shoulder, chest, and part of the abdomen of the dummy 166 in a side view.
  • the shape of the airbag 140A is made larger than that of the airbag 140 or the position of the airbag 140A embedded in the seat back 122 is changed.
  • the airbag 140A is embedded at a position as close as possible to the upper end of the seat back 122.
  • the shape of the airbag 140A is such that the edge portion (upper edge portion 144A) at the time of inflating and deploying is inclined upward toward the vehicle front side, and the vehicle front side edge is more than the vehicle rear side edge.
  • the airbag 140A can cover the head as well as the shoulder, chest, and abdomen of the dummy 166. Therefore, in the airbag device 100A, the airbag 140A not only restrains the occupant's shoulder, but also covers the head, thereby restricting the movement of the head, and the head collides with, for example, a hard object in the passenger compartment. Since this can be prevented, occupant protection performance can be further improved.
  • the upper edge portion 144A when the airbag 140A is inflated and deployed is positioned higher than the upper edge portion 144. For this reason, the belt-like member 150 is folded back at the top portion 170 ⁇ / b> A that is higher than the top portion 170, and the slack is sufficiently taken to give tension. Therefore, in the airbag device 100A, the inflated airbag 140A can be more reliably supported by the belt-shaped member 150 from the vehicle center side.
  • an occupant seated on the vehicle seat 120 is assumed for the airbag devices 100 and 100A.
  • the present invention is not limited thereto, and the occupant seated on the vehicle seat 120A is thrown out toward the vehicle center side.
  • the airbag 140 and the belt-like member 150 are covered with an appropriate cover that is torn along with the inflation and deployment of the airbag 140 on the side surface of the vehicle seat 120 on the vehicle center side. I can't.
  • the side surface of the vehicle seat 120 and the belt-like member 150 are fixed to each other using Velcro (registered trademark) or the like, and the fixation of each other is released along with the inflation and deployment of the airbag 140, and the belt-like member 150 is detached. You may make it do. That is, the airbag 140 and the belt-shaped member 150 are not necessarily hidden (embedded) in the vehicle seat 120, and may be simply provided so as to be visually recognized from the outside.
  • the belt-like member 150 is given tension by being folded at the upper edge portion 144 of the airbag 140.
  • the belt-like member 150 is not limited to this, and the airbag 140 extends from the upper end portion 152 to the lower end portion 158. If the slack is taken around along the surface, it is possible to apply tension even if the upper edge 144 is not folded back. In other words, when the belt-shaped member 150 is pushed by the airbag 140 that is inflated and deployed and is detached from the vehicle seat 120, slack is removed by the airbag 140 that is inflated, and the airbag 140 is caused by the tension generated in the belt-shaped member 150. Need only have a length that can be pressed against the seat back 122.
  • the lower end 158 of the belt-like member 150 is fixed at the second attachment point 162 set to an appropriate frame in the seat cushion 124, it is not limited to this. That is, if the second attachment point 162 is located on the vehicle front side with respect to the first attachment point 156 and the belt-like member 150 overlaps at least the thigh of the occupant in a side view when the airbag 140 is inflated and deployed,
  • the two attachment points 162 may be appropriately set on a rail or a vehicle floor located below the seat cushion 124 in the vehicle.
  • FIG. 7 is a diagram illustrating a state in which another airbag device 100B is accommodated and a state in which it is inflated and deployed.
  • symbol is attached
  • FIG. 7A illustrates a state in which the airbag device 100B is embedded in the side surface of the vehicle seat 120 on the vehicle center side.
  • FIG. 7B is a diagram illustrating a state where the airbag apparatus 100B is inflated and deployed in a state where the dummy 166 is seated.
  • the lower end portion 158 of the belt-like member 150 is not near the side surface 125a of one (vehicle center side) of the seat cushion 124, but the other (vehicle outer side). ) To the side surface 125b.
  • the lower end 158 is fixed to an appropriate frame in the seat cushion 124 in the vicinity of the side surface 125b outside the vehicle. In this respect, the airbag device 100B is different from the airbag device 100.
  • the belt-like member 150 is embedded in the seat cushion 124 so as to extend from the side surface 125a on the vehicle center side of the seat cushion 124 toward the side surface 125b on the vehicle outer side and reach the lower end portion 158. ing.
  • a part 159 in the range from the side surface 125a on the vehicle center side of the seat cushion 124 to the lower end portion 158 of the belt-like member 150 is shown in FIG. 7B, as shown in FIG. It passes under the portion 167 corresponding to.
  • a part 159 in the above range of the belt-like member 150 is covered with an appropriate cover that is torn along with the inflation and deployment of the airbag 140.
  • FIG. 8 is a diagram illustrating a state in which the airbag device 100B of FIG. 7 is inflated and deployed (when the dummy 166 is not seated) as viewed from the front side of the vehicle.
  • FIG. 9 is a diagram illustrating a state in which the airbag apparatus 100B of FIG. 7 is inflated and deployed (when the dummy 166 is seated) as viewed from the front side of the vehicle.
  • the belt-like member 150 is pressed by the inflated and deployed airbag 140 and given tension, and the belt-like member 150. A suitable cover covering Then, the belt-like member 150 is in a state of being stretched obliquely upward toward the airbag 140 from the lower end portion 158 located near the side surface 125b on the vehicle outer side of the seat cushion 124.
  • the tension applied to the tension member 150 is increased accordingly.
  • the length of the portion 159 where the pulling member 150 is pressed by the dummy 166 becomes longer, so the tension of the pulling member 150 further increases accordingly. It becomes. Therefore, according to the airbag device 100B, the inflated and deployed airbag 140 can be more reliably supported from the vehicle center side by the tension member 150 with increased tension, and the occupant can be more reliably protected.
  • the airbag devices 100, 100A, and 100B are applied to the vehicle 110 including the two vehicle seats 120 and 120A.
  • the present invention is not limited to this.
  • the airbag devices 100, 100A, and 100B may be applied to a single-seater electric vehicle, a so-called ultra-small EV.
  • the ultra-compact EV is a vehicle provided with one vehicle seat (for example, a vehicle seat 120).
  • the airbags 140, 140A of the airbag devices 100, 100A, 100B are inflated and deployed not on the “vehicle center side” of the vehicle seat 120 but on the “side of the occupant” of the vehicle seat 120. become.
  • the belt-like member 150 is disposed not on the “vehicle center side” of the vehicle seat 120 but on the “side surface” of the vehicle seat 120.
  • the vehicle seat 120 is disposed. It is provided so as to overlap with the airbags 140 and 140A on the outside as seen from the occupant seated on the vehicle.
  • the belt-like member 150 applied with tension by the deployed airbags 140 and 140A can support the deployed airbags 140 and 140A from the side of the vehicle seat 120.
  • the guide portion 142 guides the belt-like member 150 to the outside of the airbags 140 and 140A as viewed from the occupant seated on the vehicle seat 120.
  • the side surface 125a shown in FIG. 7A is one side surface of the seat cushion 124 in the vehicle width direction
  • the side surface 125b is the vehicle width direction of the seat cushion 124 in the vehicle. It becomes the other side.
  • the belt-like member 150 is changed from one side 125a in the vehicle width direction of the seat cushion 124 to the other side 125b as shown in FIG. It is embedded in the seat cushion 124 so as to extend toward the lower end 158.
  • a part 159 of the range from the one side surface 125a of the seat cushion 124 in the vehicle width direction of the seat cushion 124 to the lower end 158 of the belt-like member 150 is seated as shown in FIG. It passes below the portion 167 corresponding to the thigh of the dummy 166.
  • a part 159 of the belt-like member 150 directly hits the thigh of the dummy 166 that moves to the side surface 125a in the vehicle width direction due to a side collision or the like. For this reason, as illustrated in FIG. 9, the belt-like member 150 is increased in tension by a part 159 being pressed by a portion 167 corresponding to the thigh. As a result, the belt-like member 150 can more reliably support the inflated and deployed airbags 140 and 140A from the side surface 125a in the vehicle width direction.
  • the airbag apparatus 100, 100A, 100B is applied to a vehicle such as a micro EV equipped with one vehicle seat 120, the occupant moves to the side of the vehicle seat 120 due to a side collision or the like. Can be received and protected by the airbags 140, 140A and the belt-like member 150 that supports the airbags 140, 140A.
  • the present invention can be used for an airbag device provided with an airbag that inflates and deploys to the side of an occupant of a vehicle seat at the time of a side collision of the vehicle.

Abstract

[Object] Provided is an air bag device on a side of a vehicle seat that is capable of reliably receiving and protecting a passenger in cases such as a side impact. [Solution] An air bag device (100) according to the present invention comprises: an air bag (140) that is disposed on a seat back (122) of a vehicle seat (120) which includes the seat back and a seat cushion (124), and expands toward a side of the passenger of the vehicle seat using gas supplied from an inflator (168); and a belt-like member (150) that is disposed on a side surface of the vehicle seat, and is deployed toward a vehicle front direction of the seat cushion from the seat back while the air bag expands. The air bag and the belt-like member are installed on the vehicle seat in a manner such that a detour part (171) which detours from a shortest distance of a path occurs at the belt-like member by means of the expanding air bag in the path of the belt-like member extending along a side surface of the vehicle seat across a front side of the seat cushion from the seat back when the air bag expands.

Description

エアバッグ装置Airbag device
 本発明は、車両の側突時などに、車両用シートの乗員の側方へ膨張展開するエアバッグを備えたエアバッグ装置に関するものである。 The present invention relates to an airbag device provided with an airbag that inflates and deploys to the side of an occupant of a vehicle seat at the time of a side collision of the vehicle.
 車両に横方向からの衝撃が加わった場合、乗員は、車幅方向に移動する。例えば、助手席側のサイドドアに他の車両や電柱などの物体(衝突物)が衝突する側突が生じた場合、衝突物接触側の乗員(ニアサイド側乗員;この場合は助手席側乗員)から遠い方の座席の乗員(ファーサイド側乗員;この場合はドライバ側乗員)は、慣性によって大きく移動し、ニアサイド側乗員や車室内の硬い物体に衝突して障害を負う。 * When a lateral impact is applied to the vehicle, the occupant moves in the vehicle width direction. For example, if a side collision occurs in which a vehicle (such as a vehicle or a power pole) collides with the side door on the passenger seat side, a passenger on the collision object contact side (near side passenger; in this case, passenger on the passenger seat) An occupant (far-side occupant; in this case, a driver-side occupant) far away from the vehicle moves greatly due to inertia and collides with a near-side occupant or a hard object in the passenger compartment, resulting in an obstacle.
 このような事態を想定して、例えば、運転席と助手席との間で膨張展開するエアバッグを備え、横方向からの衝撃によって車両中央側に移動する乗員を保護するエアバッグ装置が提案されている(例えば、特許文献1)。 In consideration of such a situation, for example, an airbag device is proposed that includes an airbag that inflates and deploys between a driver seat and a passenger seat, and that protects an occupant moving toward the center of the vehicle due to an impact from the lateral direction. (For example, Patent Document 1).
 特許文献1には、運転席と助手席との間に配置されたセンタコンソール内に、上方に向かって膨張展開するエアバッグ(いわゆるファーサイドエアバッグ)が収納されたエアバッグ装置が記載されている。 Patent Document 1 describes an airbag device in which an airbag that expands and deploys upward (so-called far-side airbag) is stored in a center console disposed between a driver seat and a passenger seat. Yes.
実開平5-3055号公報Japanese Utility Model Publication No. 5-3055
 サイドドア付近で展開するサイドエアバッグは、乗員を受け止めてもサイドドアによって支持されるため、膨張展開した位置に留まり、衝撃を吸収可能である。しかし、特許文献1に記載のようなファーサイドで展開するエアバッグ装置は、サイドドアのような物体で支持されないため、膨張展開しても、乗員を受け止めた衝撃によって倒れ、衝撃吸収に支障が出る可能性がある。 The side airbag deployed near the side door is supported by the side door even when the occupant is received, so that it stays in the inflated and deployed position and can absorb the impact. However, since the airbag device deployed on the far side as described in Patent Document 1 is not supported by an object such as a side door, even if it is inflated and deployed, it falls down due to the impact of catching the occupant, and there is a problem in absorbing the impact. There is a possibility of coming out.
 また近年、1人乗り用の電気自動車、いわゆる超小型EV(electric vehicle)が注目されている。この超小型EVは、例えば1つの車両用シートを備えた車両であり、側突時などに車両用シートの側方に移動する乗員を保護するエアバッグ装置が必要となる。 In recent years, electric vehicles for single passengers, so-called ultra-compact EVs (electric vehicles) have attracted attention. This ultra-compact EV is a vehicle including, for example, one vehicle seat, and an airbag device that protects an occupant who moves to the side of the vehicle seat in a side collision or the like is required.
 本発明は、このような課題に鑑み、側突時などに車両用シートの側方で乗員をより確実に受け止めて保護することが可能なエアバッグ装置を提供することを目的としている。 The present invention has been made in view of such a problem, and an object of the present invention is to provide an airbag device capable of receiving and protecting an occupant more reliably on the side of a vehicle seat in a side collision.
 上記課題を解決するために、本発明にかかるエアバッグ装置の代表的な構成は、シートバックおよびシートクッションを含む車両用シートのシートバックに設けられ、インフレータから供給されるガスを利用して車両用シートの乗員の側方へ膨張展開するエアバッグと、車両用シートの側面に配置され、エアバッグの展開時に、シートバックからシートクッションの車両前方の方向に向かって設けられる引張り部材とを備え、エアバッグが展開する時に、シートバックからシートクッション前方にかけて、車両用シートの側面に沿って延びる引張り部材の経路の途中で、膨張するエアバッグによって、当該経路の最短距離から遠回りする迂回部分が引張り部材に生じるように、エアバッグと引張り部材とが車両用シートに配置されることを特徴とする。 In order to solve the above problems, a typical configuration of an airbag device according to the present invention is provided in a seat back of a vehicle seat including a seat back and a seat cushion, and uses a gas supplied from an inflator. An airbag that inflates and deploys to the side of the occupant of the vehicle seat, and a tension member that is disposed on a side surface of the vehicle seat and is provided from the seat back toward the front of the vehicle of the seat cushion when the airbag is deployed. When the airbag is deployed, there is a detour portion that goes around from the shortest distance of the route by the inflating airbag in the middle of the route of the tension member extending along the side surface of the vehicle seat from the seat back to the front of the seat cushion. The airbag and the tension member are arranged on the vehicle seat so as to occur in the tension member. And butterflies.
 上記構成によれば、車両用シートの側面に沿って延びる引張り部材の経路は、膨張するエアバッグによって、シートバックからシートクッション前方にかけて最短距離から遠回りする経路となる。つまり、引張り部材は、車両用シートの乗員の側方へ膨張展開するエアバッグによって、車両用シートの側方に押され、例えばエアバッグの表面に沿うことで上記の迂回部分が生じる。引張り部材は、エアバッグの展開に伴って迂回部分が生じることで、たるみが取られ、シートバックから車両前方の方向に向けて張られる。したがって、引張り部材は、乗員の例えば大腿部や腰部を車両用シートの側方から支持する。その結果、上記構成では、側突等により車両用シートの側方に移動する乗員を、エアバッグおよびそれを支持する引張り部材で受け止めることとなる。 According to the above configuration, the path of the tension member that extends along the side surface of the vehicle seat is a path that goes away from the shortest distance from the seat back to the front of the seat cushion by the inflating airbag. That is, the tension member is pushed to the side of the vehicle seat by the airbag that inflates and deploys to the side of the vehicle seat occupant, and the above-described detour portion is generated along, for example, the surface of the airbag. When the air bag is deployed, the pulling member has a detoured portion so that the tension member is slackened and is stretched from the seat back toward the front of the vehicle. Therefore, the tension member supports the occupant, for example, the thigh and the waist from the side of the vehicle seat. As a result, in the above configuration, an occupant moving to the side of the vehicle seat due to a side collision or the like is received by the airbag and the tension member that supports the airbag.
 本発明によれば、エアバッグ単体で乗員を受け止める場合に比較して、エアバッグが倒れることなく適切に衝撃吸収するため、乗員をより確実に保護可能である。 According to the present invention, as compared with the case where the occupant is received by the airbag alone, the airbag absorbs the shock appropriately without falling down, so that the occupant can be protected more reliably.
 上記の引張り部材は、展開したエアバッグにより張力を付与されるとよい。この場合、引張り部材は、膨張展開するエアバッグにより引っ張られ、たるみが取られる。そして、展開したエアバッグにより張力を付与された引張り部材は、展開したエアバッグを車両用シートの側方から支持し、エアバッグをシートバックに押し付けてエアバッグの動きを規制する。なお上記構成では、引張り部材が支持すべきエアバッグにより張力を付与されるので、例えば適宜のアクチュエータを用いて引張り部材を引き込み、引張り部材に張力を与えるなどの機構が不要となり、構成を簡素化できる。 The tension member may be given tension by a deployed airbag. In this case, the tension member is pulled by the airbag that is inflated and deployed, and slack is taken. And the tension | pulling member to which tension | tensile_strength was provided by the expand | deployed airbag supports the expand | deployed airbag from the side of a vehicle seat, and presses an airbag against a seat back and regulates the movement of an airbag. In the above configuration, since the tension is applied by the airbag to be supported by the tension member, for example, a mechanism such as pulling the tension member using an appropriate actuator and applying tension to the tension member becomes unnecessary, and the configuration is simplified. it can.
 上記の引張り部材は、一端部が、シートバックの上部に取り付けられ、他端部が、側面視で着座している成人乗員の腰部近傍からシートクッションの車両前方部分の間で取り付けられているとよい。これにより、引張り部材は、エアバッグが展開したとき一端部と他端部との間で、成人乗員の腰部から例えば大腿部までの間の領域を、エアバックを介して車両用シートの側方から支持できる。また、本願での成人乗員とは、一般的な平均的な体格の成人男性および女性、並びに小柄な成人女性までを含む。これら成人乗員の体格は、各国で自動車の安全規格(前面衝突用ダミーAF05,AM50や、側突用ダミーSID-IIs,ES-2など)によって定められており、本願において乗員の肩部、頭部といった場所は、これらのダミーの各部位の位置を示している。なお、引張り部材は、車両用シートの側面に沿って延びていて、一端部および他端部はエアバッグの外部に設けられている。このため、上記構成では、引張り部材をエアバッグの内部に設ける必要がないので、エアバッグ装置の設置などが容易となり、さらに構成を簡素化できる。 The tension member has one end attached to the upper part of the seat back and the other end attached from the vicinity of the waist of an adult occupant seated in a side view to the front part of the seat cushion. Good. As a result, the tension member moves the region between the waist portion of the adult occupant and the thigh, for example, between the one end portion and the other end portion when the airbag is deployed, to the side of the vehicle seat via the airbag. It can be supported from one side. In addition, the adult occupant in this application includes adult men and women having a general average physique and even small adult women. The physiques of these adult occupants are determined by automobile safety standards (frontal collision dummy AF05, AM50, side collision dummy SID-IIs, ES-2, etc.) in each country. A place such as a part indicates the position of each part of the dummy. The tension member extends along the side surface of the vehicle seat, and one end and the other end are provided outside the airbag. For this reason, in the said structure, since it is not necessary to provide a tension member in the inside of an airbag, installation of an airbag apparatus etc. become easy and can further simplify a structure.
 上記の引張り部材の他端部は、シートクッションの一方の側面から他方の側面方向に向かって延びて、シートクッションの内部に取付けられているとよい。 The other end of the tension member may extend from one side surface of the seat cushion toward the other side surface and be attached to the inside of the seat cushion.
 上記の構成によれば、シートクッションに着座している成人乗員が、側突等によりシートクッションの一方の側面側に移動する際、引張り部材は、シートクッションの一方の側面から他端部に至る範囲の一部が成人乗員の太腿に直接当たることとなる。このため、成人乗員の移動により引張り部材の一部が太腿によって押さえ込まれ、引張り部材に付与される張力が増すことになる。その結果、引張り部材は、膨張展開したエアバッグを車両用シートの側方からより確実に支持可能となり、乗員をより確実に保護できる。 According to the above configuration, when the adult occupant sitting on the seat cushion moves to one side surface of the seat cushion due to a side collision or the like, the tension member reaches from the one side surface of the seat cushion to the other end portion. Part of the range will hit the adult occupant's thigh directly. For this reason, a part of the tension member is pressed by the thigh due to the movement of the adult occupant, and the tension applied to the tension member increases. As a result, the tension member can more reliably support the inflated and deployed airbag from the side of the vehicle seat, and can more reliably protect the occupant.
 上記の引張り部材は、一端部が、シートバックの上部に取り付けられ、他端部が、側面視で着座している成人乗員の腰部近傍からシートクッションの車両前方部分の間で、且つシートクッションより車両下方に位置する部分に、取り付けられているとよい。なお、引張り部材の他端部が取り付けられる、シートクッションより車両下方に位置する部分とは、シートクッション下のレールや、車両の床面などが挙げられる。これにより、引張り部材は、エアバッグが展開したとき、シートバックの上部に取り付けられた一端部と、シートクッションより車両下方の位置の部分に取り付けられた他端部との間で、成人乗員の腰部から例えば大腿部までの間の領域を、エアバックを介して車両用シートの側方から支持できる。 The tension member has one end attached to the upper part of the seat back and the other end between the vicinity of the waist of an adult occupant seated in a side view and the front part of the seat cushion, and from the seat cushion. It is good to be attached to the part located in the vehicle lower part. In addition, the part located below the seat cushion to which the other end portion of the tension member is attached includes a rail under the seat cushion, a floor surface of the vehicle, and the like. As a result, when the airbag is deployed, the tension member is placed between the one end attached to the upper portion of the seat back and the other end attached to a portion at a position below the vehicle from the seat cushion. The region between the waist and, for example, the thigh can be supported from the side of the vehicle seat via the airbag.
 上記の引張り部材は、エアバッグの展開時に、側面視で着座している成人乗員の腰部から大腿部の間に相当する部分を通って取り付けられているとよい。これにより、引張り部材は、エアバッグが展開したとき、一端部と他端部との間で成人乗員の腰部から大腿部に至る領域を車両用シートの側方から支持し、乗員をより確実に受け止めることができる。 The pulling member may be attached through a corresponding portion between the waist and thighs of an adult occupant seated in a side view when the airbag is deployed. Thus, when the airbag is deployed, the tension member supports the region from the side of the waist of the adult occupant to the thigh between the one end and the other end from the side of the vehicle seat, and the occupant is more reliably secured. Can take it.
 上記の引張り部材は、車両用シートの側面にシートバックからシートクッションにかけて取付けられ、エアバッグ展開時には、車両用シートに着座する乗員から見て外側で、エアバッグと重なるように設けられる帯状部材であるとよい。このように、帯状部材である引張り部材は、乗員から見て外側でエアバッグと重なるように設けられるので、エアバッグを車両用シートの側方から支持できる。また、帯状部材は、エアバッグ膨張展開前は、車両用シートの側面に取付けられているため、乗員の邪魔になることもない。 The tension member is a belt-like member that is attached to the side surface of the vehicle seat from the seat back to the seat cushion, and is provided so as to overlap the airbag on the outer side when viewed from the occupant seated on the vehicle seat. There should be. Thus, the tension member, which is a belt-like member, is provided so as to overlap with the airbag on the outside as viewed from the occupant, so that the airbag can be supported from the side of the vehicle seat. Further, since the belt-like member is attached to the side surface of the vehicle seat before the airbag is inflated and deployed, it does not interfere with the occupant.
 上記の引張り部材は、膨張展開するエアバッグによって、引張り部材の中間部が車両用シートから離脱したときに、膨張するエアバッグによってたるみが除去され、引張り部材に発生した張力によりエアバッグをシートバックに押し付けることが可能な長さを有するとよい。これにより、引張り部材は、膨張展開したエアバッグに押されて張力を与えられ、エアバッグをシートバックに押し付けることができる。なお、引張り部材の中間部とは、一端部および他端部以外の部分である。 When the intermediate portion of the tension member is detached from the vehicle seat by the airbag that is inflated and deployed, the slack is removed by the airbag that is inflated, and the airbag is seated back by the tension generated in the tension member. It is good to have a length that can be pressed against the surface. As a result, the tension member is pressed by the inflated and deployed airbag and given tension, and the airbag can be pressed against the seat back. The intermediate portion of the tension member is a portion other than one end and the other end.
 上記のエアバッグ装置は、エアバッグの車両用シートに着座する乗員から見た外側に、引張り部材を案内するガイド部をさらに備えるとよい。これにより、エアバッグが引張り部材をすり抜けて膨張展開することが防止される。よって、引張り部材は、膨張展開したエアバッグを車両用シートの側方からより確実に支持可能である。 The above-described airbag device may further include a guide portion that guides the tension member on the outside as viewed from the occupant seated on the vehicle seat of the airbag. This prevents the airbag from inflating and deploying through the tension member. Therefore, the tension member can more reliably support the inflated and deployed airbag from the side of the vehicle seat.
 上記の引張り部材の一端部は、シートバックの第1取付点に取付けられていて、エアバッグは、膨張展開時に第1取付点よりも車両上下方向の高さが高い位置となる縁部を有するとよい。これにより、引張り部材は、エアバッグの膨張展開時に、第1取付点よりも高い位置にあるエアバッグの縁部によって折り返されるので、折り返された分、たるみが取られ、より迅速に張力が与えられる。 One end of the pulling member is attached to the first attachment point of the seat back, and the airbag has an edge that is higher in the vehicle vertical direction than the first attachment point when inflated and deployed. Good. As a result, when the airbag is inflated and deployed, the tension member is folded back by the edge of the airbag that is higher than the first attachment point, so that the slack is removed and the tension is applied more quickly. It is done.
 上記の引張り部材の迂回部分は、第1取付点よりも車両上下方向の高さが高い位置に存在する部分であるとよい。これにより、引張り部材の経路は、膨張するエアバッグによって迂回した経路になる。一例として、引張り部材は、膨張するエアバッグにより、エアバッグの表面に沿って迂回し、迂回した分、たるみが取られ、エアバッグを挟み込んだ形状となる。その結果、引張り部材は、膨張するエアバッグから張力が与えられる。 The detour portion of the tension member may be a portion present at a position where the height in the vehicle vertical direction is higher than the first attachment point. Thereby, the path | route of a tension | pulling member turns into a path | route detoured by the airbag which expand | swells. As an example, the pulling member is detoured along the surface of the airbag by the inflating airbag, and a slack is taken by the detoured portion so that the airbag is sandwiched. As a result, the tension member is tensioned from the inflating airbag.
 上記のエアバッグは、膨張展開時に引張り部材と接触する領域に補強構造を有し、補強構造は、補強縫製または補強布により形成されるとよい。これにより、エアバッグは、膨張展開時に引張り部材と接触する領域が補強されるので、引張り部材との摩擦に耐えることができる。よって、エアバッグは、膨張展開時に引張り部材との接触により変形せず、全体として、引張り部材によって車両用シートの側方から確実に支持される。 The above-described airbag may have a reinforcing structure in a region that comes into contact with the tension member when inflated and deployed, and the reinforcing structure may be formed by reinforcing sewing or a reinforcing cloth. Thereby, since the area | region which contacts an tension member at the time of inflation deployment is reinforced, the airbag can endure the friction with a tension member. Therefore, the airbag is not deformed by contact with the pulling member at the time of inflation and deployment, and is reliably supported as a whole from the side of the vehicle seat by the pulling member.
 上記のエアバッグは、側面視において膨張展開時に成人乗員の少なくとも肩部を支えるように、シートバックの所定の位置に設けられ、または所定の形状を有するとよい。これにより、エアバッグが乗員の肩部を拘束するので、頭部の移動を制限できる。 The airbag described above is preferably provided at a predetermined position of the seat back or has a predetermined shape so as to support at least a shoulder portion of an adult occupant when inflated and deployed in a side view. Thereby, since an airbag restrains a passenger | crew's shoulder part, the movement of a head can be restrict | limited.
 上記のエアバッグは、側面視において膨張展開時に成人乗員の頭部を覆うよう、シートバックの所定の位置に設けられ、または所定の形状を有するとよい。これにより、エアバッグが乗員の肩部を拘束するだけでなく、頭部も覆うことで、頭部の移動を制限し、頭部が例えば車室内の硬い物体に衝突することを防止できる。 The airbag may be provided at a predetermined position of the seat back or have a predetermined shape so as to cover the head of the adult occupant when inflated and deployed in a side view. As a result, the airbag not only restrains the occupant's shoulder, but also covers the head, thereby restricting the movement of the head and preventing the head from colliding with a hard object in the passenger compartment, for example.
 上記のエアバッグ装置は、引張り部材の少なくとも他端部を回転自在に車両用シートに取付ける回転用固定具をさらに備えるとよい。ここで、引張り部材は、エアバッグが膨張展開すると、一端部から他端部まで差し渡される方向が変化する。しかし上記の回転用固定具によれば、引張り部材は、少なくとも他端部が回転するので、捩じれることなく方向を変えることができ、エアバッグ膨張展開前と同様の幅広な状態で、安定してエアバッグを支持可能である。 The above-described airbag device may further include a rotation fixture that rotatably attaches at least the other end of the tension member to the vehicle seat. Here, when the airbag is inflated and deployed, the direction in which the tension member is passed from one end to the other end changes. However, according to the above rotating fixture, at least the other end of the tension member rotates, so the direction can be changed without being twisted, and the tension member is stable in the same wide state as before the airbag inflating and deploying. The airbag can be supported.
 上記の車両用シートは、車幅方向に複数設けられ、エアバッグは、車両用シートの車幅方向の車両中央側の側面に埋設され、引っ張り部材は、エアバッグの車両中央側を通るように設けられるとよい。これにより、車両用シートの車両中央側で膨張展開したエアバッグは、引張り部材により車両中央側から支持される。したがって、側突等により車両中央側に移動する乗員を、エアバッグおよびそれを支持する引張り部材で受け止めることができる。 A plurality of the vehicle seats are provided in the vehicle width direction, the airbag is embedded in a side surface of the vehicle seat in the vehicle width direction in the vehicle width direction, and the pulling member passes through the vehicle center side of the airbag. It is good to be provided. Thereby, the airbag inflated and deployed on the vehicle center side of the vehicle seat is supported from the vehicle center side by the tension member. Therefore, an occupant who moves toward the center of the vehicle due to a side collision or the like can be received by the airbag and the tension member that supports the airbag.
 上記の車両用シートは、車幅方向に複数設けられ、引張り部材の他端部は、シートクッションの車両の中央側の側面から車両外側の側面方向に向かって延びて、シートクッションの内部に取付けられているとよい。これにより、車両用シートが車幅方向に複数設けられた車両において、引張り部材のうちシートクッションの車両中央側の側面から他端部に至る範囲の一部が、側突等により車両中央側に移動する成人乗員の太腿に直接当たることとなる。このため、引張り部材は、その一部が太腿によって押さえ込まれることで張力が増す。その結果、引張り部材は、膨張展開したエアバッグを車両中央側からより確実に支持可能となり、乗員をより確実に保護できる。 A plurality of the vehicle seats are provided in the vehicle width direction, and the other end of the tension member extends from the side surface of the seat cushion toward the side of the vehicle outside and is attached to the inside of the seat cushion. It is good to have been. As a result, in a vehicle in which a plurality of vehicle seats are provided in the vehicle width direction, a part of the range of the tension member from the side surface on the vehicle center side to the other end of the seat cushion is moved to the vehicle center side by a side collision or the like. It directly hits the thigh of a moving adult occupant. For this reason, a tension | tensile_strength increases, when the tension member is pressed down by the thigh. As a result, the tension member can more reliably support the inflated and deployed airbag from the vehicle center side, and can more reliably protect the occupant.
 上記の車両用シートは、車幅方向に1つのみ設けられ、引張り部材の他端部は、シートクッションの車両の車幅方向の一方の側面から他方の側面方向に向かって延びて、シートクッションの内部に取付けられているとよい。これにより、車両用シートが車幅方向に1つのみ設けられた車両(例えば1人乗り用の電気自動車、いわゆる超小型EV)において、引張り部材のうちシートクッションの車幅方向の一方の側面から他端部に至る範囲の一部が、側突等により車幅方向の一方の側面の側に移動する成人乗員の太腿に直接当たることとなる。このため、引張り部材は、その一部が太腿によって押さえ込まれることで張力が増す。その結果、引張り部材は、膨張展開したエアバッグを車幅方向の一方の側面の側からより確実に支持可能となり、乗員をより確実に保護できる。 The vehicle seat is provided only in the vehicle width direction, and the other end of the tension member extends from one side surface of the seat cushion in the vehicle width direction toward the other side surface of the vehicle. It is good to be installed in the inside. As a result, in a vehicle (for example, a single-seater electric vehicle, so-called ultra-compact EV) in which only one vehicle seat is provided in the vehicle width direction, from one side surface of the seat cushion in the vehicle width direction of the tension member. A part of the range reaching the other end part directly hits the thigh of an adult occupant moving to one side in the vehicle width direction due to a side collision or the like. For this reason, a tension | tensile_strength increases, when the tension member is pressed down by the thigh. As a result, the tension member can more reliably support the inflated airbag from one side in the vehicle width direction, and can more reliably protect the occupant.
 本発明によれば、側突時などに車両用シートの側方で乗員をより確実に受け止めて保護することが可能なエアバッグ装置を提供することができる。 According to the present invention, it is possible to provide an airbag device capable of more reliably receiving and protecting an occupant on the side of a vehicle seat in the event of a side collision.
本発明の実施形態におけるエアバッグ装置が適用される車両の一部を示す図である。It is a figure which shows a part of vehicle to which the airbag apparatus in embodiment of this invention is applied. 図1のエアバッグ装置が収容された状態を例示する図である。It is a figure which illustrates the state in which the airbag apparatus of FIG. 1 was accommodated. 図2のエアバッグ装置が膨張展開した状態を例示する図である。It is a figure which illustrates the state which the airbag apparatus of FIG. 2 expanded and expanded. 図3のエアバッグ装置を車両前側から見た状態を例示する図である。It is a figure which illustrates the state which looked at the air bag device of Drawing 3 from the vehicles front side. 図3のエアバッグ装置のエアバッグを例示する図である。It is a figure which illustrates the airbag of the airbag apparatus of FIG. 他のエアバッグ装置が膨張展開した状態を例示する図である。It is a figure which illustrates the state which the other airbag apparatus expanded and expanded. 他のエアバッグ装置が収容された状態および膨張展開した状態を例示する図である。It is a figure which illustrates the state in which the other airbag apparatus was accommodated, and the state which expand | deployed. 図7のエアバッグ装置が膨張展開した状態(乗員が着座していないとき)を車両前側から見た様子を例示する図である。It is a figure which illustrates a mode that the state (when a passenger | crew is not seated) which the airbag apparatus of FIG. 7 inflated and deployed was seen from the vehicle front side. 図7のエアバッグ装置が膨張展開した状態(乗員が着座しているとき)を車両前側から見た様子を例示する図である。It is a figure which illustrates a mode that the state (when a passenger | crew is seated) which the airbag apparatus of FIG. 7 inflated and deployed was seen from the vehicle front side.
100、100A、100B…エアバッグ装置、110…車両、120、120A…車両用シート、122、122A…シートバック、124、124A…シートクッション、125a、125b…側面、130…サイドドア、140、140A…エアバッグ、142…ガイド部、144、144A…上縁部、146…補強縫製部、148…補強布、150…帯状部材、152…上端部、154、160…スルーアンカー、156…第1取付点、158…下端部、162…第2取付点、164…シートフレーム、166…ダミー、168…インフレータ、170、170A…頂部、171…迂回部分、172…縫製部分 DESCRIPTION OF SYMBOLS 100, 100A, 100B ... Airbag apparatus, 110 ... Vehicle, 120, 120A ... Vehicle seat, 122, 122A ... Seat back, 124, 124A ... Seat cushion, 125a, 125b ... Side, 130 ... Side door, 140, 140A ... Airbag, 142 ... Guide part, 144, 144A ... Upper edge part, 146 ... Reinforcement sewing part, 148 ... Reinforcement cloth, 150 ... Strip member, 152 ... Upper end part, 154,160 ... Through anchor, 156 ... First attachment Point, 158 ... lower end, 162 ... second attachment point, 164 ... seat frame, 166 ... dummy, 168 ... inflator, 170, 170A ... top, 171 ... detour part, 172 ... sewing part
 以下に添付図面を参照しながら、本発明の好適な実施形態について詳細に説明する。かかる実施形態に示す寸法、材料、その他具体的な数値などは、発明の理解を容易とするための例示に過ぎず、特に断る場合を除き、本発明を限定するものではない。なお、本明細書及び図面において、実質的に同一の機能、構成を有する要素については、同一の符号を付することにより重複説明を省略し、また本発明に直接関係のない要素は図示を省略する。 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.
 図1は、本発明の実施形態におけるエアバッグ装置100が適用される車両110の一部を示す図である。エアバッグ装置100は、例えば図中点線で示すように、車両用シート120の車両中央側の側面に埋設されている。車両用シート120は、車両110内の左側前部座席(例えば、助手席)であり、シートバック122と、乗員が着座するシートクッション124とを有する。 FIG. 1 is a view showing a part of a vehicle 110 to which an airbag device 100 according to an embodiment of the present invention is applied. The airbag apparatus 100 is embedded in the side surface of the vehicle seat 120 on the vehicle center side, for example, as indicated by a dotted line in the figure. The vehicle seat 120 is a left front seat (for example, a passenger seat) in the vehicle 110, and includes a seat back 122 and a seat cushion 124 on which an occupant is seated.
 車両用シート120の車両外側には、サイドドア130が位置していて、車両中央側には、車両用シート120Aが配置されている。車両用シート120Aは、右側前部座席(例えば、運転席)であり、シートバック122Aおよびシートクッション124Aを有している。なお、上記エアバッグ装置100は、車両用シート120Aの車両中央側の側面に埋設してもよい。 The side door 130 is located on the vehicle outer side of the vehicle seat 120, and the vehicle seat 120A is disposed on the vehicle center side. The vehicle seat 120A is a right front seat (for example, a driver's seat), and includes a seat back 122A and a seat cushion 124A. The airbag device 100 may be embedded in the side surface of the vehicle seat 120A on the vehicle center side.
 以下、車両用シート120に埋設されたエアバッグ装置100について説明する。図2は、図1のエアバッグ装置100が収容された状態を例示する図である。なお、図2では、紙面手前側が車両中央側、紙面奥側が車両外側となる。 Hereinafter, the airbag apparatus 100 embedded in the vehicle seat 120 will be described. FIG. 2 is a diagram illustrating a state in which the airbag device 100 of FIG. 1 is accommodated. In FIG. 2, the front side of the page is the vehicle center side, and the back side of the page is the vehicle outside.
 エアバッグ装置100は、図2に示すように、シートバック122に埋設されたエアバッグ140と、シートバック122からシートクッション124にかけて取付けられたベルト(あるいはテザー)などの帯状部材150とを備える。なお、エアバッグ140および帯状部材150は、図2では車両用シート120の車両中央側の側面にて視認されるように示しているが、エアバッグ140の膨張展開に伴って開裂する適宜のカバーにより覆われていてもよい。 As shown in FIG. 2, the airbag device 100 includes an airbag 140 embedded in the seat back 122 and a belt-like member 150 such as a belt (or tether) attached from the seat back 122 to the seat cushion 124. In FIG. 2, the airbag 140 and the belt-shaped member 150 are shown to be visually recognized on the side surface of the vehicle seat 120 on the vehicle center side, but an appropriate cover that is torn along with the inflation and deployment of the airbag 140. It may be covered with.
 エアバッグ140は、図2に示すように、両端142a、142bが縫製などにより車両中央側の表面に取付けられたガイド部142を有する。ガイド部142は、埋設されたエアバッグ140と帯状部材150とが側面視において重なるように、帯状部材150を案内する。帯状部材150は、ガイド部142に案内されながら、エアバッグ140の車両中央側の表面を通っている。 As shown in FIG. 2, the airbag 140 has a guide portion 142 having both ends 142 a and 142 b attached to the surface on the vehicle center side by sewing or the like. The guide part 142 guides the belt-like member 150 so that the embedded airbag 140 and the belt-like member 150 overlap in a side view. The belt-like member 150 passes through the surface of the airbag 140 on the vehicle center side while being guided by the guide portion 142.
 帯状部材150は、図2に示すように、上端部(一端部)152がスルーアンカー154を介して第1取付点156にて固定され、下端部(他端部)158がスルーアンカー160を介して第2取付点162にて回転自在に固定されている。ここでは、固定具としてスルーアンカー154、160を用いたが、これに限られず、いわゆるDリングであれば適宜の固定具を用いてよい。 As shown in FIG. 2, the belt-like member 150 has an upper end (one end) 152 fixed at a first attachment point 156 via a through anchor 154 and a lower end (other end) 158 via a through anchor 160. The second attachment point 162 is rotatably fixed. Here, the through anchors 154 and 160 are used as fixtures. However, the present invention is not limited to this, and any appropriate fixture may be used as long as it is a so-called D-ring.
 また、第1取付点156は、シートバック122内のシートフレーム164に設定されている。第2取付点162は、第1取付点156よりも車両前側に位置していて、例えばシートクッション124内の適宜のフレームに設定されている。 The first attachment point 156 is set on the seat frame 164 in the seat back 122. The second attachment point 162 is located on the vehicle front side with respect to the first attachment point 156, and is set to an appropriate frame in the seat cushion 124, for example.
 以下、図3および図4を参照して、エアバッグ装置100が膨張展開した状態について説明する。図3は、図2のエアバッグ装置100が膨張展開した状態を例示する図である。図3(a)は、膨張展開したエアバッグ装置100を車両中央側から見た状態を示している。図3(b)は、図3(a)のエアバッグ140を透過して示している。図4は、図3のエアバッグ装置100を車両前側から見た状態を例示する図である。なお、図中では、乗員を模したダミー166を示している。また、図4では、側突に伴う横方向の衝撃(矢印A参照)を車両110が受けて、ダミー166が慣性によって車両中央側に向かう横方向の衝撃(矢印B参照)を受けて車両中央側に移動する状態を示している。つまり、側突に伴うダミー166の動線軸は、これら矢印A、Bで示される横方向(すなわち車幅方向)となる。 Hereinafter, a state where the airbag apparatus 100 is inflated and deployed will be described with reference to FIGS. 3 and 4. FIG. 3 is a diagram illustrating a state in which the airbag device 100 of FIG. 2 is inflated and deployed. FIG. 3A shows a state in which the inflated airbag device 100 is viewed from the vehicle center side. FIG. 3B shows the airbag 140 shown in FIG. FIG. 4 is a diagram illustrating a state in which the airbag apparatus 100 of FIG. 3 is viewed from the front side of the vehicle. In the drawing, a dummy 166 simulating an occupant is shown. In FIG. 4, the vehicle 110 receives a lateral impact (see arrow A) due to a side collision, and the dummy 166 receives a lateral impact (see arrow B) toward the vehicle center due to inertia. The state which moves to the side is shown. That is, the flow line axis of the dummy 166 accompanying the side collision is the horizontal direction (that is, the vehicle width direction) indicated by these arrows A and B.
 エアバッグ装置100は、上記エアバッグ140および帯状部材150に加えて、図3(b)に示すインフレータ168を備えている。以下、側突時でのエアバッグ装置100の動作について説明する。 The airbag device 100 includes an inflator 168 shown in FIG. 3B in addition to the airbag 140 and the belt-like member 150. Hereinafter, the operation of the airbag apparatus 100 at the time of a side collision will be described.
 まず、エアバッグ140は、インフレータ168から供給されるガスを利用して、車両用シート120の車両中央側に膨張展開する。このとき、帯状部材150は、車両中央側に膨張展開するエアバッグ140によって押される。これに伴い、車両用シート120の車両中央側の側面を覆う適宜のカバーが開裂し、帯状部材150の上端部152および下端部158以外が、車両用シート120から離脱する。 First, the airbag 140 is inflated and deployed on the vehicle center side of the vehicle seat 120 using the gas supplied from the inflator 168. At this time, the belt-like member 150 is pushed by the airbag 140 that inflates and deploys toward the vehicle center side. Along with this, an appropriate cover that covers the side surface of the vehicle seat 120 on the vehicle center side is torn, and parts other than the upper end portion 152 and the lower end portion 158 of the belt-like member 150 are detached from the vehicle seat 120.
 また、膨張展開したエアバッグ140の縁部(上縁部144)は、図3(b)に示すように、帯状部材150の上端部152がスルーアンカー154を介してシートバック122に取付けられた第1取付点156よりも、車両上下方向の高さが高い位置にある。その結果、帯状部材150は、図3(b)に示すように、エアバッグ140の上縁部144に接触した頂部170にて折り返される。頂部170にて折り返される帯状部材150は、上端部152から頂部170を経由して下端部158に至るまでの間に、膨張展開したエアバッグ140の表面に沿って迂回し、エアバッグ140を挟み込んだ形状となる。 Further, as shown in FIG. 3B, the edge portion (upper edge portion 144) of the inflated and deployed airbag 140 has the upper end portion 152 of the belt-like member 150 attached to the seat back 122 via the through anchor 154. The height in the vehicle vertical direction is higher than the first attachment point 156. As a result, the belt-like member 150 is folded back at the top portion 170 in contact with the upper edge portion 144 of the airbag 140 as shown in FIG. The belt-like member 150 folded back at the top portion 170 detours along the surface of the inflated and deployed airbag 140 from the upper end portion 152 through the top portion 170 to the lower end portion 158, and sandwiches the airbag 140 therebetween. It becomes a shape.
 なお図3(b)および図4では、第1取付点156の車両上下方向の高さを、点線Lにて示している。ここで、エアバッグ140の膨張展開時に、点線Lよりも高い位置にある帯状部材150の範囲を迂回部分171とする。迂回部分171は、図3(b)に例示するように、上端部152から頂部170を経由して図中網点で示した範囲となる。 In FIG. 3B and FIG. 4, the height of the first attachment point 156 in the vehicle vertical direction is indicated by a dotted line L. Here, when the airbag 140 is inflated and deployed, the range of the belt-like member 150 at a position higher than the dotted line L is defined as a bypass portion 171. As illustrated in FIG. 3B, the detour portion 171 has a range indicated by a halftone dot in the drawing from the upper end portion 152 through the top portion 170.
 ところで、帯状部材150は、図2に示したように、車両用シート120の側面に沿って、シートバック122の第1取付点156からシートクッション124の第2取付点162に至る長さを有している。そのため、帯状部材150は、単に車両用シート120から離脱するのでは、たるみを含んでいて、張力を得ることができない。しかし、上記したように、帯状部材150は、車両中央側に膨張展開したエアバッグ140により頂部170にて折り返され、エアバッグ140の表面に沿うことにより、迂回部分171が生じて、たるみが取られる。 Incidentally, as shown in FIG. 2, the belt-like member 150 has a length from the first attachment point 156 of the seat back 122 to the second attachment point 162 of the seat cushion 124 along the side surface of the vehicle seat 120. is doing. For this reason, the belt-like member 150 includes slack and cannot obtain a tension simply by detaching from the vehicle seat 120. However, as described above, the belt-like member 150 is folded back at the top portion 170 by the airbag 140 inflated and deployed toward the center of the vehicle, and along the surface of the airbag 140, a detour portion 171 is generated and slack is removed. It is done.
 言い換えると、帯状部材150は、シートバック122からシートクッション124前方にかけて、車両用シート120の側面に沿って延びている。そして、エアバッグ140の展開時に、帯状部材150は、シートバック122からシートクッション124の車両前方の方向に向かう経路の途中で、膨張するエアバッグ140によって、経路の最短距離から遠回りする迂回部分171を生じる。迂回部分171が生じて、たるみが取られた結果、帯状部材150は、膨張展開するエアバッグ140からより迅速に張力を受けて、エアバッグ140をシートバック122に押し付けて支持することが可能となる。 In other words, the belt-like member 150 extends along the side surface of the vehicle seat 120 from the seat back 122 to the front of the seat cushion 124. Then, when the airbag 140 is deployed, the belt-shaped member 150 is bypassed from the shortest distance of the route by the airbag 140 that is inflated in the middle of the route from the seat back 122 toward the front of the seat cushion 124 in the vehicle direction. Produce. As a result of the occurrence of the detour portion 171 and the sagging, the belt-like member 150 can receive the tension more quickly from the airbag 140 that is inflated and deployed, and can support the airbag 140 by pressing it against the seat back 122. Become.
 このように、帯状部材150は、展開したエアバッグ140によって引っ張られて、たるみが取られることで、張力を付与される引張り部材と言える。なお、引張り部材としては、展開したエアバッグ140により付与される部材であれば、ベルトなどの帯状部材150に限らず、紐状のもの、あるいはもっと幅広で面積の大きな布状のものなどでもよく、さらに、密に織り込まれた生地からなるものばかりでなく、網目状の形状を有するものでもよい。 Thus, the belt-like member 150 can be said to be a tension member to which tension is applied by being pulled by the deployed airbag 140 and taking up slack. The tension member is not limited to the belt-like member 150 such as a belt as long as it is a member provided by the deployed airbag 140, and may be a string-like member or a cloth-like member having a wider and larger area. Furthermore, it may have a mesh shape as well as a densely woven fabric.
 また、帯状部材150の下端部158は、上記したように、第1取付点156よりも車両前側に位置する第2取付点162にて、スルーアンカー160により回転自在に固定されている。ここで、帯状部材150は、エアバッグ140の膨張展開によって上端部152および下端部158以外(すなわち、中間部)が車両用シート120から離脱するため、差し渡される方向が変化する。しかし、帯状部材150の下端部158をスルーアンカー160にて回転自在に固定することで、帯状部材150は、捩じれることなく方向を変えられる。そのため、帯状部材150は、膨張展開前と同様の幅広な状態で、安定してエアバッグ140を支持できる。 Further, as described above, the lower end portion 158 of the belt-like member 150 is rotatably fixed by the through anchor 160 at the second attachment point 162 located on the vehicle front side with respect to the first attachment point 156. Here, since the belt-like member 150 is separated from the vehicle seat 120 except for the upper end portion 152 and the lower end portion 158 (that is, the intermediate portion) due to the inflation and deployment of the airbag 140, the direction in which the belt-like member 150 is passed changes. However, by fixing the lower end portion 158 of the band-shaped member 150 so as to be rotatable by the through anchor 160, the direction of the band-shaped member 150 can be changed without being twisted. Therefore, the belt-like member 150 can stably support the airbag 140 in a wide state similar to that before the inflation and deployment.
 一例として、帯状部材150は、図3(b)に示すように、頂部170から下端部158に至るまで車両前側に向かって捩れることなく、幅広な状態で斜め下方に延びている。このとき、帯状部材150は、ダミー166の例えば腰部から大腿部の間に相当する部分に側面視で重なっている。 As an example, as shown in FIG. 3B, the belt-like member 150 extends obliquely downward in a wide state without being twisted toward the vehicle front side from the top portion 170 to the lower end portion 158. At this time, the belt-like member 150 overlaps the portion of the dummy 166 corresponding to, for example, between the waist and the thigh in a side view.
 さらに、エアバッグ140の車両中央側の表面に取付けられた上記ガイド部142が帯状部材150を案内することで、エアバッグ140が帯状部材150をすり抜けて膨張展開することが防止される。言い換えると、帯状部材150の張力が作用する、エアバッグ140の表面上の点がバラつくことを防止できるので、乗員保護性能が安定する。 Furthermore, the guide portion 142 attached to the surface of the airbag 140 on the vehicle center side guides the belt-like member 150, thereby preventing the airbag 140 from passing through the belt-like member 150 and inflating and deploying. In other words, since the points on the surface of the airbag 140 where the tension of the belt-like member 150 acts can be prevented, the passenger protection performance is stabilized.
 また、エアバッグ140は、図3(a)および図3(b)に示すように、ダミー166の肩部、胸部、さらに腹部の一部と側面視で重なっている。つまり、エアバッグ140は、側面視において膨張展開時に成人乗員の少なくとも肩部を支えるように、シートバック122の所定の位置に設けられ、または所定の形状を有している。これにより、エアバッグ140が乗員の肩部を拘束することになり、頭部の移動を制限できる。ここで、所定の位置とは、例えば、シートバック122の上端に可能な限り接近した位置であってよい。また、所定形状とは、図示のように、膨張展開時でのエアバッグ140の上縁部144が、ダミー166の肩部よりも高くなるように、車両前側に向かって上方に傾斜する形状であってよい。 In addition, as shown in FIGS. 3A and 3B, the airbag 140 overlaps the shoulder, chest, and part of the abdomen of the dummy 166 in a side view. That is, the airbag 140 is provided at a predetermined position of the seat back 122 or has a predetermined shape so as to support at least a shoulder portion of an adult occupant when inflated and deployed in a side view. Thereby, the airbag 140 will restrain a passenger | crew's shoulder part, and can restrict | limit the movement of a head. Here, the predetermined position may be, for example, a position as close as possible to the upper end of the seat back 122. Further, as shown in the figure, the predetermined shape is a shape that is inclined upward toward the front side of the vehicle so that the upper edge portion 144 of the airbag 140 when inflated and deployed is higher than the shoulder portion of the dummy 166. It may be.
 したがって、エアバッグ装置100では、図3(a)および図4に示すように、膨張展開したエアバッグ140に押されて張力を与えられた帯状部材150が、膨張展開したエアバッグ140を車両中央側から支持し、エアバッグ140をシートバック122に押し付けてエアバッグ140の動きを規制する。さらに、帯状部材150は、図3(a)に示すように、頂部170から下端部158に至る箇所で乗員の例えば腰部から大腿部に至る部位などを車両中央側から支持する。したがって、エアバッグ装置100では、側突等により車両中央側に移動する乗員を、エアバッグ140およびそれを支持する帯状部材150で受け止めることとなる。よって、エアバッグ装置100によれば、エアバッグ140単体で乗員を受け止める場合に比べて、エアバッグ140が倒れることなく適切に衝撃吸収するため、乗員をより確実に保護できる。 Therefore, in the airbag device 100, as shown in FIG. 3A and FIG. 4, the belt-like member 150 that is pressed and applied with the tension by the inflated airbag 140 causes the airbag 140 to be inflated and deployed. The airbag 140 is supported from the side, and the airbag 140 is pressed against the seat back 122 to restrict the movement of the airbag 140. Furthermore, as shown in FIG. 3A, the belt-like member 150 supports a portion of the occupant from, for example, the waist to the thigh from the center of the vehicle at a location from the top 170 to the lower end 158. Therefore, in the airbag device 100, an occupant who moves toward the center of the vehicle due to a side collision or the like is received by the airbag 140 and the belt-like member 150 that supports it. Therefore, according to the airbag device 100, since the airbag 140 appropriately absorbs the shock without falling down, compared to the case where the airbag 140 is received alone, the passenger can be more reliably protected.
 また、帯状部材150は、エアバッグ140膨張展開前は、車両用シート120の車両中央側の側面に取り付けられているため、シートバック122のリクライニングあるいは乗降の際、乗員の邪魔になることがない。 In addition, since the belt-like member 150 is attached to the side surface of the vehicle seat 120 on the vehicle center side before the airbag 140 is inflated and deployed, it does not interfere with the occupant when the seat back 122 is reclined or boarded / exited. .
 さらに、エアバッグ140について説明する。図5は、図3のエアバッグ装置100のエアバッグ140を例示する図である。図中では、膨張展開した状態のエアバッグ140を示している。図5(a)は、エアバッグ140に補強縫製部146を形成した状態を示している。図5(b)は、エアバッグ140に別体の補強布148を取付けた状態を示している。 Further, the airbag 140 will be described. FIG. 5 is a diagram illustrating the airbag 140 of the airbag device 100 of FIG. 3. In the figure, the airbag 140 in an inflated and deployed state is shown. FIG. 5A shows a state in which the reinforcement sewing portion 146 is formed on the airbag 140. FIG. 5B shows a state in which a separate reinforcing cloth 148 is attached to the airbag 140.
 図5(a)に示すエアバッグ140は、車両中央側の表面に両端142a、142bが縫製された上記ガイド部142に加えて、膨張展開時に上記帯状部材150と接触する領域に補強縫製部146を有する。 The airbag 140 shown in FIG. 5 (a) has a reinforcing sewing portion 146 in a region that comes into contact with the belt-like member 150 during inflation and deployment, in addition to the guide portion 142 having both ends 142a and 142b sewn on the surface on the vehicle center side. Have
 補強縫製部146を有するエアバッグ140では、膨張展開時に帯状部材150と接触する領域が補強される。つまり、エアバッグ140は、補強縫製部146により形成された補強構造によって、帯状部材150との摩擦に耐えることが可能となる。 In the airbag 140 having the reinforced sewing portion 146, a region that comes into contact with the belt-like member 150 at the time of inflation and deployment is reinforced. That is, the airbag 140 can withstand friction with the belt-shaped member 150 by the reinforcing structure formed by the reinforcing sewing portion 146.
 図5(b)に示すエアバッグ140は、上記ガイド部142に加えて、膨張展開時に上記帯状部材150と接触する領域だけでなく、この領域の周囲も覆う別体の補強布148を有する。なお、ここでのガイド部142の両端142a、142bは、補強布148と重なったエアバッグ140の車両中央側の表面に縫製されている。 In addition to the guide portion 142, the airbag 140 shown in FIG. 5 (b) has a separate reinforcing cloth 148 that covers not only the region that contacts the belt-like member 150 during inflation and deployment, but also the periphery of this region. Here, both ends 142 a and 142 b of the guide portion 142 are sewn on the surface of the airbag 140 on the vehicle center side that overlaps the reinforcing cloth 148.
 補強布148を有するエアバッグ140では、膨張展開時に帯状部材150と接触する領域だけでなく、その領域の周囲も補強される。つまり、エアバッグ140は、別体の補強布148により形成された補強構造によって、帯状部材150との摩擦に十分に耐えることが可能となる。 The airbag 140 having the reinforcing cloth 148 reinforces not only the region in contact with the belt-like member 150 during inflation and deployment, but also the periphery of the region. That is, the airbag 140 can sufficiently withstand the friction with the belt-shaped member 150 by the reinforcing structure formed by the separate reinforcing cloth 148.
 その結果、エアバッグ140は、補強縫製146または別体の補強布148などで形成される補強構造を有することで、膨張展開時に帯状部材150との接触により変形せず、全体として、帯状部材150によって車両中央側から確実に支持されることになる。また、帯状部材150においては、図3(b)に示すように、エアバッグ140と接触する箇所に縫製部分172などを形成して、エアバッグ140の膨張展開時にエアバッグ140との位置ずれを防止するようにしてもよい。 As a result, the airbag 140 has a reinforcing structure formed by reinforcing sewing 146 or a separate reinforcing cloth 148, so that the airbag 140 is not deformed by contact with the band-shaped member 150 during inflation and deployment, and as a whole, the band-shaped member 150 Thus, the vehicle is reliably supported from the vehicle center side. Further, in the belt-like member 150, as shown in FIG. 3 (b), a sewing portion 172 or the like is formed at a location where the airbag 140 is in contact with the airbag 140, and the positional deviation from the airbag 140 is prevented when the airbag 140 is inflated and deployed. You may make it prevent.
 図6は、他のエアバッグ装置100Aが膨張展開した状態を例示する図である。なお、図中では、上記エアバッグ装置100に示す部材と同一部材には同一符号を付し、説明を適宜省略する。 FIG. 6 is a diagram illustrating a state where another airbag device 100A is inflated and deployed. In addition, in the figure, the same code | symbol is attached | subjected to the member same as the member shown in the said airbag apparatus 100, and description is abbreviate | omitted suitably.
 エアバッグ装置100Aは、エアバッグ140Aが、側面視において膨張展開時にダミー166の頭部を覆っている点で、上記エアバッグ装置100と異なる。 The airbag device 100A differs from the airbag device 100 in that the airbag 140A covers the head of the dummy 166 when inflated and deployed in a side view.
 エアバッグ装置100では、上記したように、エアバッグ140が、ダミー166の肩部、胸部、腹部の一部と側面視で重なっている。これに対して、エアバッグ装置100Aでは、エアバッグ140Aの形状をエアバッグ140よりも大きくし、あるいはシートバック122に埋設するエアバッグ140Aの位置を変更している。具体的には、例えば、シートバック122の上端に可能な限り接近した位置にエアバッグ140Aを埋設している。また、例えば、エアバッグ140Aの形状は、図示のように、膨張展開時の縁部(上縁部144A)が車両前側に向かって上方に傾斜し、車両前側の縁が車両後側の縁よりも長い形状としてよい。このようにすれば、エアバッグ140Aによって、ダミー166の肩部、胸部、腹部の一部に加えて、頭部も覆うことができる。よって、エアバッグ装置100Aでは、エアバッグ140Aが乗員の肩部を拘束するだけでなく、頭部も覆うことで、頭部の移動を制限し、頭部が例えば車室内の硬い物体に衝突することを防止できるので、乗員保護性能をより向上させることが可能である。 In the airbag device 100, as described above, the airbag 140 overlaps the shoulder, chest, and part of the abdomen of the dummy 166 in a side view. On the other hand, in the airbag device 100A, the shape of the airbag 140A is made larger than that of the airbag 140 or the position of the airbag 140A embedded in the seat back 122 is changed. Specifically, for example, the airbag 140A is embedded at a position as close as possible to the upper end of the seat back 122. Further, for example, as shown in the figure, the shape of the airbag 140A is such that the edge portion (upper edge portion 144A) at the time of inflating and deploying is inclined upward toward the vehicle front side, and the vehicle front side edge is more than the vehicle rear side edge. May be a long shape. In this way, the airbag 140A can cover the head as well as the shoulder, chest, and abdomen of the dummy 166. Therefore, in the airbag device 100A, the airbag 140A not only restrains the occupant's shoulder, but also covers the head, thereby restricting the movement of the head, and the head collides with, for example, a hard object in the passenger compartment. Since this can be prevented, occupant protection performance can be further improved.
 また、エアバッグ140Aが膨張展開したときの上縁部144Aは、上記上縁部144よりも高い位置になる。このため、帯状部材150は、上記頂部170よりも高い位置となる頂部170Aにて折り返され、たるみが十分に取られて張力が与えられる。したがって、エアバッグ装置100Aでは、膨張展開したエアバッグ140Aを帯状部材150によって車両中央側からより確実に支持できる。 Also, the upper edge portion 144A when the airbag 140A is inflated and deployed is positioned higher than the upper edge portion 144. For this reason, the belt-like member 150 is folded back at the top portion 170 </ b> A that is higher than the top portion 170, and the slack is sufficiently taken to give tension. Therefore, in the airbag device 100A, the inflated airbag 140A can be more reliably supported by the belt-shaped member 150 from the vehicle center side.
 上記各実施形態では、エアバッグ装置100、100Aに対して、車両用シート120に着座する乗員を想定したが、これに限らず、車両用シート120Aに着座する乗員が車両中央側に投げ出されたとしても、エアバッグ140、140Aおよび帯状部材150にてその乗員を保護することが可能である。 In each of the above embodiments, an occupant seated on the vehicle seat 120 is assumed for the airbag devices 100 and 100A. However, the present invention is not limited thereto, and the occupant seated on the vehicle seat 120A is thrown out toward the vehicle center side. However, it is possible to protect the occupant with the airbags 140 and 140A and the belt-shaped member 150.
 また、エアバッグ140および帯状部材150は、車両用シート120の車両中央側の側面にて、エアバッグ140の膨張展開に伴って開裂する適宜のカバーにより覆われているとしたが、これに限られない。一例として、車両用シート120の側面と帯状部材150とをマジックテープ(登録商標)などを用いて互いに固定し、エアバッグ140の膨張展開に伴って互いの固定が解除され、帯状部材150が離脱するようにしてもよい。つまり、エアバッグ140および帯状部材150は、車両用シート120内に必ずしも隠す(埋設)必要はなく、外部から視認されるように単に設けてもよい。 In addition, the airbag 140 and the belt-like member 150 are covered with an appropriate cover that is torn along with the inflation and deployment of the airbag 140 on the side surface of the vehicle seat 120 on the vehicle center side. I can't. As an example, the side surface of the vehicle seat 120 and the belt-like member 150 are fixed to each other using Velcro (registered trademark) or the like, and the fixation of each other is released along with the inflation and deployment of the airbag 140, and the belt-like member 150 is detached. You may make it do. That is, the airbag 140 and the belt-shaped member 150 are not necessarily hidden (embedded) in the vehicle seat 120, and may be simply provided so as to be visually recognized from the outside.
 さらに、帯状部材150はエアバッグ140の上縁部144にて折り返されることで張力を与えられるとしたが、これに限らず、上端部152から下端部158に至るまでの間に、エアバッグ140の表面に沿って迂回して、たるみが取られるのであれば、上縁部144にて折り返されなくとも張力を与えることは可能となる。言い換えると、帯状部材150は、膨張展開するエアバッグ140に押されて車両用シート120から離脱したときに、膨張するエアバッグ140によってたるみが除去され、帯状部材150に発生した張力によりエアバッグ140をシートバック122に押し付けることが可能な長さを有すればよい。 Further, the belt-like member 150 is given tension by being folded at the upper edge portion 144 of the airbag 140. However, the belt-like member 150 is not limited to this, and the airbag 140 extends from the upper end portion 152 to the lower end portion 158. If the slack is taken around along the surface, it is possible to apply tension even if the upper edge 144 is not folded back. In other words, when the belt-shaped member 150 is pushed by the airbag 140 that is inflated and deployed and is detached from the vehicle seat 120, slack is removed by the airbag 140 that is inflated, and the airbag 140 is caused by the tension generated in the belt-shaped member 150. Need only have a length that can be pressed against the seat back 122.
 また、帯状部材150の下端部158は、シートクッション124内の適宜のフレームに設定された第2取付点162で固定されているとしたが、これに限定されない。すなわち、第2取付点162が第1取付点156よりも車両前側に位置していて、帯状部材150がエアバッグ140の膨張展開時に乗員の少なくとも大腿部と側面視において重なるのであれば、第2取付点162は、シートクッション124の車両下方に位置するレールあるいは車両床面に適宜設定してもよい。 In addition, although the lower end 158 of the belt-like member 150 is fixed at the second attachment point 162 set to an appropriate frame in the seat cushion 124, it is not limited to this. That is, if the second attachment point 162 is located on the vehicle front side with respect to the first attachment point 156 and the belt-like member 150 overlaps at least the thigh of the occupant in a side view when the airbag 140 is inflated and deployed, The two attachment points 162 may be appropriately set on a rail or a vehicle floor located below the seat cushion 124 in the vehicle.
 図7は、他のエアバッグ装置100Bが収容された状態および膨張展開した状態を例示する図である。なお、図中では、上記エアバッグ装置100に示す部材と同一部材には同一符号を付し、説明を適宜省略する。図7(a)は、エアバッグ装置100Bが車両用シート120の車両中央側の側面に埋設された状態を例示している。図7(b)は、ダミー166が着座した状態でエアバッグ装置100Bが膨張展開した状態を例示する図である。 FIG. 7 is a diagram illustrating a state in which another airbag device 100B is accommodated and a state in which it is inflated and deployed. In addition, in the figure, the same code | symbol is attached | subjected to the member same as the member shown in the said airbag apparatus 100, and description is abbreviate | omitted suitably. FIG. 7A illustrates a state in which the airbag device 100B is embedded in the side surface of the vehicle seat 120 on the vehicle center side. FIG. 7B is a diagram illustrating a state where the airbag apparatus 100B is inflated and deployed in a state where the dummy 166 is seated.
 図7(a)に例示するように、膨張展開前のエアバッグ装置100Bでは、帯状部材150の下端部158がシートクッション124の一方(車両中央側)の側面125a付近ではなく、他方(車両外側)の側面125bまで延びている。そして下端部158は、車両外側の側面125b付近にてシートクッション124内の適宜のフレームに固定されている。この点で、エアバッグ装置100Bは、上記エアバッグ装置100と異なる。 As illustrated in FIG. 7A, in the airbag device 100B before inflating and deploying, the lower end portion 158 of the belt-like member 150 is not near the side surface 125a of one (vehicle center side) of the seat cushion 124, but the other (vehicle outer side). ) To the side surface 125b. The lower end 158 is fixed to an appropriate frame in the seat cushion 124 in the vicinity of the side surface 125b outside the vehicle. In this respect, the airbag device 100B is different from the airbag device 100.
 帯状部材150は、図7(a)に示すように、シートクッション124の車両中央側の側面125aから車両外側の側面125bに向けて延長され下端部158に至るように、シートクッション124に埋設されている。帯状部材150のうち、シートクッション124の車両中央側の側面125aから下端部158に至るまでの範囲の一部159は、図7(b)に示すように、着座しているダミー166の太腿に相当する部分167の下側を通っている。なお、帯状部材150の上記範囲の一部159は、エアバッグ140の膨張展開に伴って開裂する適宜のカバーにより覆われている。 As shown in FIG. 7A, the belt-like member 150 is embedded in the seat cushion 124 so as to extend from the side surface 125a on the vehicle center side of the seat cushion 124 toward the side surface 125b on the vehicle outer side and reach the lower end portion 158. ing. A part 159 in the range from the side surface 125a on the vehicle center side of the seat cushion 124 to the lower end portion 158 of the belt-like member 150 is shown in FIG. 7B, as shown in FIG. It passes under the portion 167 corresponding to. A part 159 in the above range of the belt-like member 150 is covered with an appropriate cover that is torn along with the inflation and deployment of the airbag 140.
 以下、図7(b)、図8および図9を参照して、エアバッグ装置100Bが膨張展開した状態での帯状部材150の挙動を説明する。図8は、図7のエアバッグ装置100Bが膨張展開した状態(ダミー166が着座していないとき)を車両前側から見た様子を例示する図である。図9は、図7のエアバッグ装置100Bが膨張展開した状態(ダミー166が着座しているとき)を車両前側から見た様子を例示する図である。 Hereinafter, the behavior of the belt-like member 150 in a state where the airbag apparatus 100B is inflated and deployed will be described with reference to FIGS. FIG. 8 is a diagram illustrating a state in which the airbag device 100B of FIG. 7 is inflated and deployed (when the dummy 166 is not seated) as viewed from the front side of the vehicle. FIG. 9 is a diagram illustrating a state in which the airbag apparatus 100B of FIG. 7 is inflated and deployed (when the dummy 166 is seated) as viewed from the front side of the vehicle.
 図8に示すように、側突に伴う横方向の衝撃(矢印A参照)を車両110が受けると、帯状部材150は、膨張展開したエアバッグ140に押されて張力を与えられ、帯状部材150を覆う適宜のカバーが開裂する。そして、帯状部材150は、シートクッション124の車両外側の側面125b付近に位置する下端部158からエアバック140に向かって斜め上方に張った状態になる。 As shown in FIG. 8, when the vehicle 110 receives a lateral impact (see arrow A) due to a side collision, the belt-like member 150 is pressed by the inflated and deployed airbag 140 and given tension, and the belt-like member 150. A suitable cover covering Then, the belt-like member 150 is in a state of being stretched obliquely upward toward the airbag 140 from the lower end portion 158 located near the side surface 125b on the vehicle outer side of the seat cushion 124.
 つぎに、図7(b)および図9に例示するように、シートクッション124に着座しているダミー166が側突等により車両中央側に移動する場合(矢印B参照)について説明する。この場合には、引張り部材150は、シートクッション124の車両中央側の側面125aから他端部158に至る範囲の一部159がダミー166の太腿に相当する部分167に直接当たることとなる。 Next, as illustrated in FIGS. 7B and 9, a case where the dummy 166 seated on the seat cushion 124 moves to the vehicle center side due to a side collision or the like (see arrow B) will be described. In this case, in the tension member 150, a part 159 in the range from the side surface 125 a on the vehicle center side of the seat cushion 124 to the other end 158 directly hits a portion 167 corresponding to the thigh of the dummy 166.
 ダミー166が着座していない図8の状態と比較すると、ダミー166が着座していれば、図9のように、引張り部材150の一部159が太腿に相当する部分167によって押さえ込まれる。したがって、それだけ、引張り部材150に付与される張力が増すことになる。さらに、側突等により車両中央側にダミー166が移動するほど、引張り部材150がダミー166によって押さえ込まれる一部159の長さが長くなるから、その分だけ、引張り部材150の張力がさらに増すこととなる。したがって、エアバッグ装置100Bによれば、張力が増した引張り部材150によって、膨張展開したエアバッグ140を車両中央側からより確実に支持可能となり、乗員をより確実に保護できる。 Compared with the state of FIG. 8 in which the dummy 166 is not seated, if the dummy 166 is seated, a part 159 of the tension member 150 is pressed by the part 167 corresponding to the thigh as shown in FIG. Therefore, the tension applied to the tension member 150 is increased accordingly. Further, as the dummy 166 moves toward the center of the vehicle due to a side collision or the like, the length of the portion 159 where the pulling member 150 is pressed by the dummy 166 becomes longer, so the tension of the pulling member 150 further increases accordingly. It becomes. Therefore, according to the airbag device 100B, the inflated and deployed airbag 140 can be more reliably supported from the vehicle center side by the tension member 150 with increased tension, and the occupant can be more reliably protected.
 また、上記実施形態では、エアバッグ装置100、100A、100Bを、2つの車両用シート120、120Aを備えた車両110に適用した場合を説明したが、これに限定されない。一例として、エアバッグ装置100、100A、100Bを、1人乗り用の電気自動車、いわゆる超小型EVに適用してもよい。 In the above-described embodiment, the case where the airbag devices 100, 100A, and 100B are applied to the vehicle 110 including the two vehicle seats 120 and 120A has been described. However, the present invention is not limited to this. As an example, the airbag devices 100, 100A, and 100B may be applied to a single-seater electric vehicle, a so-called ultra-small EV.
 超小型EVは、1つの車両用シート(例えば車両用シート120)を備えた車両である。このような車両では、エアバッグ装置100、100A、100Bのエアバッグ140、140Aは車両用シート120の「車両中央側」ではなく、車両用シート120の「乗員の側方」へ膨張展開することになる。 The ultra-compact EV is a vehicle provided with one vehicle seat (for example, a vehicle seat 120). In such a vehicle, the airbags 140, 140A of the airbag devices 100, 100A, 100B are inflated and deployed not on the “vehicle center side” of the vehicle seat 120 but on the “side of the occupant” of the vehicle seat 120. become.
 また、上記の車両では、帯状部材150は、車両用シート120の「車両中央側」ではなく、車両用シート120の「側面」に配置され、エアバッグ140、140Aの展開時には、車両用シート120に着座する乗員から見て外側で、エアバック140、140Aと重なるように設けられる。そして、展開したエアバッグ140、140Aにより張力を付与された帯状部材150は、展開したエアバッグ140、140Aを車両用シート120の側方から支持できる。なお、ガイド部142は、エアバッグ140、140Aの、車両用シート120に着座する乗員から見た外側に、帯状部材150を案内する。 In the vehicle described above, the belt-like member 150 is disposed not on the “vehicle center side” of the vehicle seat 120 but on the “side surface” of the vehicle seat 120. When the airbags 140 and 140A are deployed, the vehicle seat 120 is disposed. It is provided so as to overlap with the airbags 140 and 140A on the outside as seen from the occupant seated on the vehicle. The belt-like member 150 applied with tension by the deployed airbags 140 and 140A can support the deployed airbags 140 and 140A from the side of the vehicle seat 120. The guide portion 142 guides the belt-like member 150 to the outside of the airbags 140 and 140A as viewed from the occupant seated on the vehicle seat 120.
 ここで、上記の車両において、図7(a)に示した側面125aは、シートクッション124の車両の車幅方向の一方の側面となり、また、側面125bは、シートクッション124の車両の車幅方向の他方の側面となる。このため、上記の車両に帯状部材150を適用した場合、帯状部材150は、図7(a)に示すように、シートクッション124の車両の車幅方向の一方の側面125aから他方の側面125bに向けて延長され下端部158に至るように、シートクッション124に埋設されることになる。そして、帯状部材150のうち、シートクッション124の車両の車幅方向の一方の側面125aから下端部158に至るまでの範囲の一部159は、図7(b)に示すように、着座しているダミー166の太腿に相当する部分167の下側を通っている。 Here, in the above vehicle, the side surface 125a shown in FIG. 7A is one side surface of the seat cushion 124 in the vehicle width direction, and the side surface 125b is the vehicle width direction of the seat cushion 124 in the vehicle. It becomes the other side. For this reason, when the belt-like member 150 is applied to the vehicle described above, the belt-like member 150 is changed from one side 125a in the vehicle width direction of the seat cushion 124 to the other side 125b as shown in FIG. It is embedded in the seat cushion 124 so as to extend toward the lower end 158. A part 159 of the range from the one side surface 125a of the seat cushion 124 in the vehicle width direction of the seat cushion 124 to the lower end 158 of the belt-like member 150 is seated as shown in FIG. It passes below the portion 167 corresponding to the thigh of the dummy 166.
 よって、帯状部材150の一部159が、側突等により車幅方向の一方の側面125aの側に移動するダミー166の太腿に直接当たることとなる。このため、帯状部材150は、図9に例示したように、その一部159が太腿に相当する部分167よって押さえ込まれることで張力が増す。その結果、帯状部材150は、膨張展開したエアバッグ140、140Aを車幅方向の一方の側面125aの側からより確実に支持可能となる。 Therefore, a part 159 of the belt-like member 150 directly hits the thigh of the dummy 166 that moves to the side surface 125a in the vehicle width direction due to a side collision or the like. For this reason, as illustrated in FIG. 9, the belt-like member 150 is increased in tension by a part 159 being pressed by a portion 167 corresponding to the thigh. As a result, the belt-like member 150 can more reliably support the inflated and deployed airbags 140 and 140A from the side surface 125a in the vehicle width direction.
 したがって、1つの車両用シート120を備えた超小型EVなどの車両にエアバッグ装置100、100A、100Bを適用した場合であっても、側突等により車両用シート120の側方に移動する乗員を、エアバッグ140、140Aおよびそれを支持する帯状部材150で受け止めて、保護することが可能となる。 Therefore, even when the airbag apparatus 100, 100A, 100B is applied to a vehicle such as a micro EV equipped with one vehicle seat 120, the occupant moves to the side of the vehicle seat 120 due to a side collision or the like. Can be received and protected by the airbags 140, 140A and the belt-like member 150 that supports the airbags 140, 140A.
 以上、添付図面を参照しながら本発明の好適な実施形態について説明したが、本発明は係る例に限定されないことは言うまでもない。当業者であれば、特許請求の範囲に記載された範疇内において、各種の変更例または修正例に想到し得ることは明らかであり、それらについても当然に本発明の技術的範囲に属するものと了解される。 The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but it goes without saying that the present invention is not limited to such examples. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.
 また、上記実施形態においては本発明にかかるエアバッグ装置100を自動車に適用した例を説明したが、自動車以外にも航空機や船舶などに適用することも可能であり、同様の作用効果を得ることができる。 Moreover, in the said embodiment, although the example which applied the airbag apparatus 100 concerning this invention to the motor vehicle was demonstrated, it is also possible to apply to an aircraft, a ship, etc. besides a motor vehicle, and obtains the same effect. Can do.
 本発明は、車両の側突時などに、車両用シートの乗員の側方へ膨張展開するエアバッグを備えたエアバッグ装置に利用することができる。 The present invention can be used for an airbag device provided with an airbag that inflates and deploys to the side of an occupant of a vehicle seat at the time of a side collision of the vehicle.

Claims (18)

  1.  シートバックおよびシートクッションを含む車両用シートの該シートバックに設けられ、インフレータから供給されるガスを利用して前記車両用シートの乗員の側方へ膨張展開するエアバッグと、
     前記車両用シートの側面に配置され、前記エアバッグの展開時に、前記シートバックから前記シートクッションの車両前方の方向に向かって設けられる引張り部材とを備え、
     前記エアバッグが展開する時に、前記シートバックから前記シートクッション前方にかけて、前記車両用シートの側面に沿って延びる前記引張り部材の経路の途中で、膨張する前記エアバッグによって、当該経路の最短距離から遠回りする迂回部分が前記引張り部材に生じるように、前記エアバッグと前記引張り部材とが前記車両用シートに配置されることを特徴とする車両用乗員保護装置。
    An airbag which is provided on the seat back of the vehicle seat including a seat back and a seat cushion and which inflates and deploys to the side of the occupant of the vehicle seat using gas supplied from an inflator;
    A tension member that is disposed on a side surface of the vehicle seat and is provided toward the vehicle front direction of the seat cushion from the seat back when the airbag is deployed;
    When the airbag is deployed, the airbag is inflated in the middle of the path of the tension member extending along the side surface of the vehicle seat from the seat back to the front of the seat cushion. The vehicle occupant protection device according to claim 1, wherein the airbag and the tension member are arranged on the vehicle seat such that a detouring portion that makes a detour occurs in the tension member.
  2.  前記引張り部材は、展開した前記エアバッグにより張力を付与されることを特徴とする請求項1に記載の車両用乗員保護装置。 2. The vehicle occupant protection device according to claim 1, wherein the tension member is given tension by the deployed airbag.
  3.  前記引張り部材は、一端部が、前記シートバックの上部に取り付けられ、他端部が、側面視で着座している成人乗員の腰部近傍から前記シートクッションの車両前方部分の間で取り付けられていることを特徴とする請求項1又は2に記載の車両用乗員保護装置。 One end of the tension member is attached to the upper part of the seat back, and the other end is attached between the front part of the seat cushion and the vehicle front part from the vicinity of the waist of an adult occupant seated in a side view. The vehicle occupant protection device according to claim 1 or 2.
  4.  前記引張り部材の前記他端部は、前記シートクッションの一方の側面から他方の側面方向に向かって延びて、該シートクッションの内部に取付けられていることを特徴とする請求項3に記載の車両用乗員保護装置。 4. The vehicle according to claim 3, wherein the other end portion of the tension member extends from one side surface of the seat cushion toward the other side surface and is attached to the inside of the seat cushion. Occupant protection device.
  5.  前記引張り部材は、一端部が、前記シートバックの上部に取り付けられ、他端部が、側面視で着座している成人乗員の腰部近傍から前記シートクッションの車両前方部分の間で、且つ前記シートクッションより車両下方に位置する部分に、取り付けられていることを特徴とする請求項1又は2に記載の車両用乗員保護装置。 The tension member has one end attached to the upper part of the seat back and the other end between the vicinity of the waist of an adult occupant seated in a side view and the front part of the seat cushion, and the seat. The vehicle occupant protection device according to claim 1, wherein the vehicle occupant protection device is attached to a portion positioned below the vehicle from the cushion.
  6.  前記引張り部材は、前記エアバッグの展開時に、側面視で着座している成人乗員の腰部から大腿部の間に相当する部分を通って取り付けられていることを特徴とする請求項1から5のいずれか1項に記載の車両用乗員保護装置。 6. The pulling member is attached through a portion corresponding to a portion between a waist and a thigh of an adult occupant seated in a side view when the airbag is deployed. The vehicle occupant protection device according to any one of the above.
  7.  前記引張り部材は、前記車両用シートの側面に前記シートバックからシートクッションにかけて取付けられ、前記エアバッグ展開時には、該車両用シートに着座する乗員から見て外側で、前記エアバッグと重なるように設けられる帯状部材であることを特徴とする請求項1から6のいずれか1項に記載の車両用乗員保護装置。 The tension member is attached to a side surface of the vehicle seat from the seat back to a seat cushion, and when the airbag is deployed, the tension member is provided so as to overlap the airbag on the outside as viewed from a passenger seated on the vehicle seat. The vehicle occupant protection device according to any one of claims 1 to 6, wherein the vehicle occupant protection device is a belt-shaped member.
  8.  前記引張り部材は、膨張展開する前記エアバッグによって、前記引張り部材の中間部が前記車両用シートから離脱したときに、膨張する該エアバッグによってたるみが除去され、該引張り部材に発生した張力により該エアバッグを前記シートバックに押し付けることが可能な長さを有することを特徴とする請求項1から7のいずれか1項に記載の車両用乗員保護装置。 When the intermediate portion of the tension member is detached from the vehicle seat by the airbag that is inflated and deployed, the tension member removes slack by the airbag that is inflated, and the tension member generates the tension due to the tension generated in the tension member. The vehicle occupant protection device according to any one of claims 1 to 7, wherein the vehicle occupant protection device has a length capable of pressing an air bag against the seat back.
  9.  前記エアバッグの前記車両用シートに着座する乗員から見た外側に、前記引張り部材を案内するガイド部をさらに備えることを特徴とする請求項1から8のいずれか1項に記載の車両用乗員保護装置。 The vehicle occupant according to any one of claims 1 to 8, further comprising a guide portion that guides the pulling member on an outer side of the airbag as viewed from an occupant seated on the vehicle seat. Protective device.
  10.  前記引張り部材の前記一端部は、前記シートバックの第1取付点に取付けられていて、
     前記エアバッグは、膨張展開時に前記第1取付点よりも車両上下方向の高さが高い位置となる縁部を有することを特徴とする請求項1から9のいずれか1項に記載の車両用乗員保護装置。
    The one end of the tension member is attached to a first attachment point of the seat back,
    The vehicle airbag according to any one of claims 1 to 9, wherein the airbag has an edge portion that is located at a position where the height in the vehicle vertical direction is higher than the first attachment point when the airbag is inflated and deployed. Crew protection device.
  11.  前記引張り部材の前記迂回部分は、前記第1取付点よりも車両上下方向の高さが高い位置に存在する部分であることを特徴とする請求項1から10のいずれか1項に記載の車両用乗員保護装置 The vehicle according to any one of claims 1 to 10, wherein the detour portion of the pulling member is a portion that is present at a position where the height in the vehicle vertical direction is higher than the first attachment point. Passenger protection device
  12.  前記エアバッグは、膨張展開時に前記引張り部材と接触する領域に補強構造を有し、
     前記補強構造は、補強縫製または補強布により形成されることを特徴とする請求項1から11のいずれか1項に記載の車両用乗員保護装置。
    The airbag has a reinforcing structure in a region that comes into contact with the tension member when inflated and deployed.
    The vehicle occupant protection device according to any one of claims 1 to 11, wherein the reinforcing structure is formed by reinforcing sewing or a reinforcing cloth.
  13.  前記エアバッグは、側面視において膨張展開時に成人乗員の少なくとも肩部を支えるように、前記シートバックの所定の位置に設けられ、または所定の形状を有することを特徴とする請求項1から12のいずれか1項に記載の車両用乗員保護装置。 13. The airbag according to claim 1, wherein the airbag is provided at a predetermined position of the seat back or has a predetermined shape so as to support at least a shoulder portion of an adult occupant when inflated and deployed in a side view. The vehicle occupant protection device according to any one of the preceding claims.
  14.  前記エアバッグは、側面視において膨張展開時に成人乗員の頭部を覆うよう、前記シートバックの所定の位置に設けられ、または所定の形状を有することを特徴とする請求項1から13のいずれか1項に記載の車両用乗員保護装置。 14. The air bag according to claim 1, wherein the airbag is provided at a predetermined position of the seat back or has a predetermined shape so as to cover an adult occupant's head when inflated and deployed in a side view. The vehicle occupant protection device according to claim 1.
  15.  前記引張り部材の少なくとも他端部を回転自在に前記車両用シートに取付ける回転用固定具をさらに備えることを特徴とする請求項1から14のいずれか1項に記載の車両用乗員保護装置。 The vehicle occupant protection device according to any one of claims 1 to 14, further comprising a rotation fixture that rotatably attaches at least the other end of the tension member to the vehicle seat.
  16.  前記車両用シートは、車幅方向に複数設けられ、
     前記エアバッグは、前記車両用シートの車幅方向の車両中央側の側面に埋設され、
     前記引っ張り部材は、前記エアバッグの前記車両中央側を通るように設けられることを特徴とする請求項1から15のいずれか1項に記載の車両用乗員保護装置。
    A plurality of the vehicle seats are provided in the vehicle width direction,
    The airbag is embedded in a side surface of the vehicle seat in the vehicle width direction of the vehicle seat,
    16. The vehicle occupant protection device according to claim 1, wherein the pulling member is provided so as to pass through the vehicle center side of the airbag.
  17.  前記車両用シートは、車幅方向に複数設けられ、
     前記引張り部材の前記他端部は、前記シートクッションの車両の中央側の側面から車両外側の側面方向に向かって延びて、該シートクッションの内部に取付けられていることを特徴とする請求項3に記載の車両用乗員保護装置。
    A plurality of the vehicle seats are provided in the vehicle width direction,
    The other end portion of the tension member extends from a side surface of the seat cushion on the center side of the vehicle toward a side surface direction of the vehicle outer side, and is attached to the inside of the seat cushion. The vehicle occupant protection device described in 1.
  18.  前記車両用シートは、車幅方向に1つのみ設けられ、
     前記引張り部材の前記他端部は、前記シートクッションの車両の車幅方向の一方の側面から他方の側面方向に向かって延びて、該シートクッションの内部に取付けられていることを特徴とする請求項3に記載の車両用乗員保護装置。
    Only one vehicle seat is provided in the vehicle width direction,
    The other end portion of the tension member extends from one side surface in the vehicle width direction of the vehicle of the seat cushion toward the other side surface, and is attached to the inside of the seat cushion. Item 4. The vehicle occupant protection device according to Item 3.
PCT/JP2012/079452 2012-01-17 2012-11-14 Air bag device WO2013108473A1 (en)

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