WO2015030200A1

WO2015030200A1 - Seat device

Info

Publication number: WO2015030200A1
Application number: PCT/JP2014/072807
Authority: WO
Inventors: 哲也川平; 滋中崎
Original assignee: 株式会社フジクラ
Priority date: 2013-08-30
Filing date: 2014-08-29
Publication date: 2015-03-05
Also published as: JP2016190504A

Abstract

The present invention provides a seat device (5) that increases the durability of a pressure-sensitive switch and that suitably detects seating. The seat device (5) of the present invention is provided with: a plurality of springs (73) that are lined up and stretch across an opening of a frame (72); a cushion pad (60) that is mounted upon the springs; a mounting base (80) that is attached to a member (72) that does not move in conjunction with displacement of the cushion pad (60) caused by seating; and a pressure-sensitive switch (SW) that is disposed upon the mounting base (80) so as to be separated from a cushion pad lower surface by a gap. The mounting base is elastic in the direction in which the cushion pad lower surface is displaced.

Description

Seat device

The present invention relates to a seat device and is suitable in the technical field of detecting seating of a seat in a vehicle or the like.

As one of the safety systems in vehicles, an alarm system that warns that a seat belt is not worn when riding is put into practical use. In this alarm system, a warning is issued when seat belt wearing is not detected in the state where seating of a person is detected. As a seat device used for such an alarm system, the following Patent Document 1 has been proposed.

The seat device of Patent Document 1 includes a flexible sheet-like pressure-sensitive switch (PSS / PSS2) housed in a recess (C1a) formed on the back surface of a sheet cushion (C1), and its feeling. And an elastic closing member (C2) in contact with the lower surface of the pressure switch (PSS / PSS2) and closing the depression (C1a).

In such a seat device, the seat cushion (C1) disperses the load applied to one point, so a strong load is not applied locally to the pressure sensitive switch (PSS / PSS2), and the pressure sensitive switch (PSS / PSS2) It is said that the durability is high.

Patent Document 1 Japanese Patent Laid-Open No. 10-211836

However, in the seat device of the above-mentioned patent document, since the pressure-sensitive switch (PSS / PSS2) is arranged inside the seat cushion (C1), the pressure-sensitive switch (PSS / PSS2) is on and tends to detect errors.

Also, depending on the weight of the person sitting on the seat cushion (C1), excessive pressure continues to be applied to the pressure sensitive switch (PSS / PSS2), and the durability of the pressure sensitive switch (PSS / PSS2) tends to be inferior It is in.

Therefore, an object of the present invention is to provide a seat device that can detect seating appropriately while improving the durability of the pressure sensitive switch.

In order to solve the above problems, a seat device according to the present invention includes a plurality of springs arranged and stretched over an opening of a frame, a cushion pad placed on the plurality of springs, and the cushion caused by seating. A mounting table that is attached to a member that does not move in conjunction with the displacement of the pad; and a pressure-sensitive switch that is disposed on the mounting surface of the mounting table with a clearance from the lower surface of the cushion pad. It is characterized by having elasticity in the direction in which the lower surface of the cushion pad is displaced.

The position of the lower surface of the cushion pad is hardly displaced when an object lighter than a person is placed, but greatly displaced downward when a person is seated. In the seat device of the present invention, a pressure-sensitive switch is disposed on the mounting surface of the mounting table with a gap from the lower surface of the cushion pad where such displacement occurs, and the mounting table is subject to displacement of the cushion pad due to seating. It is attached to a member that does not move in conjunction.
Therefore, when an object is placed on the cushion pad, the relative position between the cushion pad and the pressure sensitive switch is hardly displaced, and the pressure sensitive switch is turned on and erroneous detection is suppressed. On the other hand, when a person is seated, the relative position of the cushion pad and the pressure sensitive switch changes and the pressure sensitive switch is turned on. Thus, it is possible to detect seating appropriately.
In the seat device of the present invention, the mounting table has elasticity in the direction in which the cushion pad lower surface is displaced. Therefore, when the displacement of the cushion pad lower surface exceeds a certain level, Moves downward with respect to displacement.
Therefore, even when an excessive pressing force is applied from the cushion pad to the pressure sensitive switch, for example, when a person having a weight heavier than the normal range is seated, the pressing force from the cushion pad to the pressure sensitive switch is reduced. Can be relaxed. Thus, the durability of the pressure sensitive switch can be improved.

Further, it is preferable that the mounting table is displaced in a direction in which the lower surface of the cushion pad is displaced when a pressure larger than a pressure required when the pressure sensitive switch is turned on is applied.

In this case, since the mounting table is not displaced before the pressure-sensitive switch is turned on, seating can be detected more appropriately than when the mounting table is displaced before the pressure-sensitive switch is turned on.

Further, the mounting table has an inclined part extending downward, and the switch arrangement part where the pressure sensitive switch is arranged in the mounting table is connected to the inclined part in a state parallel to the lower surface of the cushion pad. In the mounting table, it is preferable that the mounting table is located at a position lower than an attachment site attached to the member.

In this case, it is possible to reduce the force received from the cushion pad from being excessively applied to the inclined portion and the like, compared to the case of the mounting table having the inclined portion extending upward, and the durability of the mounting table. Can be improved.

Moreover, it is preferable that the mounting table is an elastic body.

In this case, since the mounting table itself is an elastic body, the number of parts can be reduced compared to the case where the mounting table itself is not an elastic body and the mounting table is made elastic using another elastic member. And miniaturization can be achieved.

Further, the mounting table includes a first mounting table fixed to the member, a second mounting table separated from the first mounting table, in which the pressure sensitive switch is disposed, the first mounting table, and the first mounting table. It is preferable to include a joint member connected to each of the two mounting tables and having elasticity.

In this case, since the joint member has elasticity, the first mounting table and the second mounting table may or may not have elasticity, and the first mounting table and the second mounting table can be freely formed. The elasticity of can be adjusted.

The mounting table includes a first mounting table on which the pressure-sensitive switch is disposed, a second mounting table that is separated from the first mounting table and is fixed to the member, the first mounting table, and the second mounting table. It is preferable to include a spring connected to the mounting table and biasing the first mounting table on the lower surface side of the cushion pad.

In this case, since the spring has elasticity, the first mounting table and the second mounting table may or may not have elasticity, and the first mounting table and the second mounting table can be freely provided. Elasticity can be adjusted.

In addition, it is preferable that the first mounting table and the second mounting table have a rigidity that does not cause deformation due to pressure applied to the cushion pad.

In such a case, since the first mounting table and the second mounting table have a rigidity that does not deform due to the pressure applied to the cushion pad, it is only necessary to adjust the elasticity of the joint member and the durability. Can also be improved.

Further, the mounting table includes a plate on which the pressure sensitive switch is disposed, and a support for supporting a part of the plate on the member, and the support preferably has elasticity.

In this case, since the support has elasticity, the plate may or may not have elasticity, and the elasticity of the plate can be adjusted freely.

In addition, it is preferable that the plate has a rigidity higher than that which is not deformed by the pressure applied to the cushion pad.

In this case, since the plate has a rigidity higher than that which does not deform due to the pressure applied to the cushion pad, it is only necessary to adjust the elasticity of the support, and the durability can be improved.

Moreover, it is preferable that the mounting table has at least two fixing parts fixed to the member.

In this case, it is possible to reduce the shift of the fixed position when an impact or the like is applied, compared to the case where there is one fixed part. It can suppress that the pressure added to a pressure switch becomes too large or too small.

In addition, it is preferable that a part of the mounting table is molded integrally with the member.

In this case, compared to the case where the member and a part of the mounting table are not integrally formed, the displacement due to vibration is avoided, so that the seating can be detected more appropriately.

As described above, according to the present invention, it is possible to realize a seat device that can appropriately detect the seating while improving the durability of the pressure-sensitive switch.

It is an exploded view which shows the structure of the seating sensor used for a seat apparatus. It is a figure which shows the external appearance and the mode of a cross section of a seating sensor. It is a figure which shows a mode that the seat apparatus was seen from the diagonal direction. FIG. 4 is a view showing a cross section taken along line XX of FIG. 3. It is a figure which shows distribution of the load which a cushion pad lower surface receives. It is a figure which shows a mode when a person sits on a seat apparatus from the same viewpoint as FIG. It is a figure which shows the measurement state and measurement result of the displacement in a cushion pad lower surface and a spring bottom when a person sits on a cushion pad. It is a figure which shows a mode that a pressure sensitive switch turns on in the cross section along the ZZ line of FIG. FIG. 4 is a view showing a state of the mounting table when a person is seated on the seat device in a cross section taken along line YY in FIG. 3. It is a figure which shows the mode of the mounting base in 2nd Embodiment in the cross section along the YY line of FIG. It is a figure which shows the structure of a joint member. It is a figure which shows the mode of the mounting base in 3rd Embodiment in the cross section along the YY line of FIG. It is a figure which shows the mode of the mounting base in 4th Embodiment in the cross section along the YY line of FIG. It is a figure which shows the mode of the mounting base in 5th Embodiment in the cross section along the YY line of FIG. It is a perspective view which shows the mounting base in 6th Embodiment. It is the figure which looked at a mode that a mounting base in a 6th embodiment is attached from right beside the mounting base. It is a figure which shows the attachment state of the mounting base in other embodiment.

(1) First Embodiment A first embodiment for carrying out the present invention will be described in detail with reference to the drawings.

FIG. 1 is an exploded view showing a configuration of a seating sensor 1 used in a seat device. As shown in FIG. 1, the seating sensor 1 includes a pressure-sensitive switch and a cushion member 40 as main components, and the pressure-sensitive switch includes a first electrode sheet 10, a second electrode sheet 20, and a spacer 30 as main components. As a major component.

The first electrode sheet 10 includes a first insulating sheet 11, a first electrode 12, and a terminal 13.

The first insulating sheet 11 is a flexible film-like insulating sheet, for example, a rectangular shape. In the case of this embodiment, the first insulating sheet 11 includes a main block B1 where the first electrode 12 is to be disposed and a sub-block B2 where the terminal 13 is to be disposed. The sub block B2 is smaller than the main block B1, and is connected to an end portion in the longitudinal direction of the main block B1.

Examples of the material of the first insulating sheet 11 include resins such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), and polyethylene naphthalate (PEN).

The first electrode 12 is one switch element that forms a switch, and is, for example, a substantially circular metal printing layer. The first electrode 12 is disposed on one surface of the main block B1.

The terminal 13 is a conductor layer, for example, a substantially rectangular metal sheet. Further, the terminal 13 is disposed on the surface of the sub-block B2 on the same side as the surface on which the first electrode 12 is disposed, and is electrically connected to the first electrode 12 through the first wiring 14 and illustrated. It is electrically connected to the electric control unit of the vehicle through a wiring that does not.

The second electrode sheet 20 has a second insulating sheet 21, a second electrode 22, and a terminal 23, similarly to the first electrode sheet 10.

The second insulating sheet 21 is a flexible film-like insulating sheet, for example, a rectangular shape. In the case of this embodiment, the second insulating sheet 21 includes a main block B11 in which the second electrode 22 is to be disposed and a sub-block B12 in which the terminal 23 is to be disposed. The main block B11 has the same shape and size as the main block B1 of the first insulating sheet 11, and the sub block B12 has the same shape and size as the sub block B2 of the first insulating sheet 11. The connection position of the sub block B12 connected to the main block B11 is a position relatively different from the connection position of the sub block B2 connected to the main block B1 of the first insulating sheet 11.

As the material of the second insulating sheet 21, like the first insulating sheet 11, a resin such as PET, PBT, or PEN can be used. The material of the second insulating sheet 21 may be the same as or different from the material of the first insulating sheet 11.

The second electrode 22 is the other switch element that forms a switch, and is, for example, a substantially circular metal printing layer. The second electrode 22 is disposed on the surface of the main block B11. In the case of this embodiment, the size of the second electrode 22 is the same size as the first electrode 12, and the arrangement position of the second electrode 22 is relatively the same position as the arrangement position of the first electrode 12 with respect to the main block B1. Is done.

The terminal 23 is a conductor layer, for example, a substantially rectangular metal sheet. The terminal 23 is disposed on the surface of the sub-block B12 on the same side as the surface on which the first electrode 12 is disposed, and is electrically connected to the second electrode 22 through the second wiring 24 and illustrated. It is electrically connected to the electric control unit of the vehicle through a wiring that does not.

The spacer 30 is a film-like insulating sheet and has an opening 31. In the present embodiment, the spacer 30 has the same shape and size as the main block B1 of the first insulating sheet 11. Examples of the material of the spacer 30 include resins such as PET, PBT, and PEN, as in the first insulating sheet 11 and the second insulating sheet 21. The material of the spacer 30 may be the same as or different from the material of the first insulating sheet 11 or the second insulating sheet 21.

The peripheral shape of the opening 31 is, for example, a substantially circular shape, and the diameter of the opening 31 is slightly smaller than the diameters of the first electrode 12 and the second electrode 22. Further, the arrangement position of the opening 31 is relatively the same position as the arrangement position of the first electrode 12 with respect to the main block B1.

In this opening 31, a slit 32 that is spatially connected to the outside of the spacer 30 is formed. That is, one end of the slit 32 is connected to the corresponding opening 31, and the other end is opened to the side of the spacer 30.

The cushion member 40 is an elastic member that deforms so as to be crushed when pressure is applied, and is formed of, for example, a sponge-like resin provided with a large number of pores, a nonwoven fabric in which resin fibers are intertwined, rubber, or the like. . In the present embodiment, the cushion member 40 has a substantially rectangular parallelepiped shape, and the wide surface thereof is the same as the wide surface of the main block B1 of the first insulating sheet 11.

FIG. 2 is a view showing an appearance and a sectional view of the seating sensor 1. Specifically, FIG. 2A is a view showing the seating sensor 1 as viewed from above, and FIG. 2B is a cross-sectional view taken along the line WW in FIG. It is a figure which shows a mode.

As shown in FIGS. 2A and 2B, the first electrode sheet 10 is attached to one surface of the spacer 30, and the second electrode sheet 20 is attached to the other surface of the spacer 30. A pressure sensitive switch SW is configured. That is, the pressure sensitive switch SW includes a pair of insulating

sheets

11 and 21, a spacer portion interposed between the sheet portions, and a pair of

electrodes

12 and 22 facing each other through an opening 31 provided in the spacer portion. Is a membrane switch including The part of the insulating

sheets

11 and 21 is a part where at least an electrode is arranged. In the pressure sensitive switch SW, one switch element is the first electrode 12, and the other switch element is the second electrode 22.

The seating sensor 1 is configured by attaching the cushion member 40 to one insulating sheet surface in such a pressure sensitive switch SW. In the case of this embodiment, the cushion member 40 is affixed on the opposite side surface of the surface of the first insulating sheet 11 of the pressure sensitive switch SW that faces the spacer 30.

Next, the seat device 5 provided with the above-described seating sensor 1 will be described. FIG. 3 is a diagram illustrating a state in which the seat device 5 is viewed from an oblique direction. In FIG. 3, the seating sensor 1 is simply shown for convenience.

3, the seat device 5 includes a cushion pad 60, a cushion mounting unit 70, a mounting table 80, and the above-described seating sensor 1 as main components. In FIG. 3, the seating sensor 1 is shown in a simplified manner for convenience.

The cushion pad 60 is a member to be seated, and is an elastic member that deforms so as to be crushed when pressure is applied. Examples of such an elastic member material include urethane foam. In the case of this embodiment, a backrest member 61 is connected to the rear end portion of the cushion pad 60.

The cushion mounting unit 70 includes a gantry 71, a support frame 72, and a plurality of springs 73. The pedestal 71 is a base member that serves as a base for supporting the cushion pad 60, and has a rigidity that does not cause deformation due to pressure applied to the cushion pad 60 due to the seating of a person.

In the case of the present embodiment, the left foundation leg 71A and the right foundation leg 71B arranged in parallel to each other, the left front leg 71C and the left rear leg 71D standing on the left foundation leg 71A, and the right foundation The pedestal 71 is constituted by the right front leg 71E and the right rear leg 71F standing on the leg 71B. Examples of the material of these leg portions 71A to 71F include metals or ceramics.

The support frame 72 is a frame member to which the plurality of springs 73 are fixed and supports the cushion pad 60 together with the springs 73, and is connected with the pedestal 71 as a base. Similar to the pedestal 71, the support frame 72 has a rigidity higher than that which is not deformed by the pressure applied to the cushion pad 60 due to the seating of a person.

In the case of the present embodiment, the support frame 72 is configured by the plate-like front frame 72A, rear frame 72B, left frame 72C, and right frame 72D. These frames 72A to 72D are fixed to the upper ends of the left front leg portion 71C, the left rear leg portion 71D, the right front leg portion 71E, and the right rear leg portion 71F, and are erected in a state of being parallel to each other.

Examples of the material of each of the frames 72A to 72D include metal or ceramic. The material of each of the frames 72A to 72D may be the same as or different from the material of the legs 71A to 71F. Further, each of the frames 72A to 72D may be formed integrally with the leg portions 71A to 71F.

The plurality of springs 73 are members on which the cushion pad 60 is placed, and are arranged and stretched over the opening of the support frame 72.

In the case of the present embodiment, each spring 73 is a metal member that is repeatedly bent in an S shape on the same surface, and its cross-sectional shape is, for example, a circle. One end of each spring 73 is fixed to the upper end portion of the front frame 72A, and the other end of the spring 73 is fixed to the upper end portion of the rear frame 72B. Thus, the plurality of springs 73 are stretched over the opening surface at the upper end of the frame of the support frame 72 along the front-rear direction of the cushion pad 60 at a predetermined interval, and are configured as a mat for the cushion pad 60.

The mounting table 80 is a member on which at least the pressure sensitive switch SW in the seating sensor 1 is mounted. The mounting table 80 is an elastic body that is elastic in the direction in which the lower surface of the cushion pad is displaced when a pressure greater than the pressure required when the pressure sensitive switch is turned on is applied. The mounting table 80 in this embodiment is, for example, plate-shaped, one end of the mounting table 80 is fixed to the upper end portion of the front frame 72A, and the other end is an open end.

Examples of the material of the mounting table 80 include spring steel or resin. Examples of the resin include rubber, polypropylene (PP), polyethylene (PE), polyacetal (POM), and PBT.

FIG. 4 is a view showing a cross section taken along line XX of FIG. In FIG. 4, the seating sensor 1 is shown in a simplified manner for convenience. As shown in FIG. 4, the pressure-sensitive switch SW in the seating sensor 1 is supported by the support frame 72 through the mounting table 80 between the springs 73 below the cushion pad 60 and adjacent to each other.

In other words, the pressure sensitive switch SW is supported at a position where it does not overlap with each spring 73 in the vertical direction of the spring 73 with a gap from the lower surface of the cushion pad. That is, the arrangement position of the pressure sensitive switch SW and the arrangement position of the spring 73 are different in the height direction of the seat device 5, and when the spring 73 is viewed from directly above, the pressure sensitive switch SW and the spring 73 overlap each other. It is in a state of being separated individually without.

Thus, the pressure-sensitive switch SW arranged on the mounting table 80 is connected to the ECU (Electronic Control Unit) of the vehicle via the

terminals

13 and 23 of the seating sensor 1 having the pressure-sensitive switch SW.

FIG. 5 is a diagram showing a distribution of loads received on the lower surface of the cushion pad. In FIG. 5, the left side of the paper surface corresponds to the front side of the cushion pad 60, and the right side of the paper surface corresponds to the rear side of the cushion pad 60.

As shown in FIG. 5, the load received by the lower surface of the cushion pad when a person is seated normally is larger at the hip point HP and the front than the hip point compared to the rear. Note that “regular seating” means sitting with the buttocks positioned deep in the seating surface and the back contacting the backrest. In addition, the “hip point” means a part that protrudes to the lowermost side in the buttocks.

In addition, the distribution of the load received by the lower surface of the cushion pad when a person is seated normally is roughly divided into three stages: a first area MG1, a second area MG2, and a third area MG3. The first region MG1 has a ratio of 90% or more with respect to the load of the portion, based on the largest portion (hereinafter referred to as the maximum load portion) among the loads that the lower surface of the cushion pad receives when a person is normally seated. It becomes the area to the part which is. On the other hand, the second region MG2 is a region up to a portion where the ratio with respect to the maximum load portion is 80% or more and less than 90% with reference to the maximum load portion. On the other hand, the third region MG3 is a region up to a portion where the ratio with respect to the maximum load portion is 10% or more and less than 80% with reference to the maximum load portion. The first region MG1 and the second region MG2 generally correspond to the central region of the cushion pad seating surface.

In the case of the present embodiment, the mounting table 80 is disposed below any one of the first region MG1 to the third region MG3 and below the bottom of the spring. A pressure switch SW is arranged.

FIG. 6 is a diagram showing the situation when a person is seated on the seat device 5 from the same viewpoint as FIG. As shown in FIG. 6, when a person is seated on the cushion pad 60, a load is applied to the seating surface of the cushion pad 60, and thus a pressing force is generated from the seating surface of the cushion pad 60.

This pressing force is transmitted to the lower side of the cushion pad 60 and is displaced so that the lower surface of the cushion pad and the spring bottom in front of the hip point fall as a whole, and the reference position when the cushion pad 60 is not receiving pressure (shown by a broken line). To lower.

FIG. 7 is a diagram showing measurement states and measurement results of displacements on the cushion pad lower surface and the spring bottom when a person is seated on the cushion pad 60. Specifically, FIG. 7A is a cross-sectional view showing a measurement state of displacement at the cushion pad lower surface and the spring bottom, and FIG. 7B is a graph showing displacement at the cushion pad lower surface and the spring bottom.

As shown in FIG. 7A, the displacement at the lower surface of the cushion pad and the spring bottom was measured using a laser displacement meter LDM disposed in front of the hip point and below the spring bottom.

As shown in FIG. 7B, when a person sits on the cushion pad 60, the cushion pad lower surface and the spring bottom are more in the left-right direction of the cushion pad 60 than when the luggage is placed on the cushion pad 60. Large displacement over the end.

The horizontal axis in FIG. 7B is closer to the center in the left-right direction (width direction) of the cushion pad 60 as it goes to the right side of the page, and at the end of the cushion pad 60 in the left-right direction as it goes to the left side of the page. It means approaching.

FIG. 8 is a view showing a state where the pressure-sensitive switch SW is turned on in a cross section along the line ZZ in FIG. As shown in FIG. 8, when a person sits on the cushion pad 60 of the seat device 5 of the present embodiment, the cushion pad is displaced so that the lower surface of the cushion pad and the spring bottom in front of the person's hip point fall as a whole. The lower surface is in contact with the pressure sensitive switch SW.

In this case, pressure is applied to the pressure sensitive switch SW from both the cushion pad side and the mounting table side (see arrows). On the cushion pad side, the lower surface of the cushion pad is bent and the second insulating sheet 21 of the pressure sensitive switch SW is pressed downward. On the other hand, on the mounting table 80 side, the cushion member 40 provided below the first insulating sheet 11 of the pressure sensitive switch SW is bent, and the first insulating sheet 11 is pressed upward.

Since the first insulating sheet 11 and the second insulating sheet 21 pressed in this manner have flexibility, they bend so as to enter the opening 31 of the spacer 30. By bending in this way, the first electrode 12 and the second electrode 22 facing each other through the opening 31 come into contact with each other. Thus, the pressure sensitive switch SW is turned on.

A slit 32 (FIG. 1) is formed in the opening 31 of the spacer 30 sandwiched between the first electrode 12 and the second electrode 22 to communicate the opening with the outside.

For this reason, when the second insulating sheet 21 bends, the air in the opening 31 is discharged through the slit 32 without remaining in the opening. That is, it is avoided that the bending of the first insulating sheet 11 and the second insulating sheet 21 is suppressed by the air in the opening 31. Therefore, compared with the case where the slit 32 is not formed, the first electrode 12 and the second electrode 22 are easily in contact with each other, and the sensitivity of the pressure sensitive switch SW can be improved.

FIG. 9 is a view showing a state of the mounting table 80 when a person is seated on the seat device 5 in a cross section taken along line YY in FIG. Specifically, FIG. 9A shows a state of the mounting table 80 when the pressure sensitive switch SW is turned on, and FIG. 9B shows a state of the mounting table 80 after the pressure sensitive switch SW is turned on. ing.

When the cushion pad bottom surface is displaced so as to drop and the cushion pad bottom surface comes into contact with the pressure sensitive switch SW, pressure is applied to the pressure sensitive switch SW from the bottom surface of the cushion pad.

The mounting table 80 on which the pressure-sensitive switch SW is mounted is an elastic body that generates elasticity in a direction in which the lower surface of the cushion pad is displaced when a pressure larger than the pressure required when the pressure-sensitive switch SW is turned on is applied. The For this reason, when the pressure sensitive switch SW is turned on by the pressure applied from the lower surface of the cushion pad, the mounting table 80 is not elastic, and the mounting table 80 is not displaced.

By the way, as described above, when a person is seated, the displacement amount of the lower surface of the cushion pad is large. Therefore, the mounting table 80 tends to be applied with a pressure larger than the pressure required when the pressure sensitive switch SW is turned on.

Therefore, as shown in FIG. 9B, the mounting table 80 moves downward with respect to the displacement of the lower surface of the cushion pad after the pressure sensitive switch SW is turned on. For this reason, when a person is seated, the pressing force from the cushion pad 60 to the pressure sensitive switch SW is relieved by the repulsive force in the mounting table 80. The degree of relaxation increases as the weight of the person sitting on the cushion pad 60 increases.

As described above, in the seat device 5 of the present embodiment, the mounting table 80 is attached to the support frame 72, and the pressure sensitive switch SW is disposed on the mounting surface of the mounting table 80.

By the way, the position of the lower surface of the cushion pad is hardly displaced when an object lighter than a person is placed, but greatly displaced downward when a person is seated. The pressure sensitive switch SW is disposed on the mounting surface of the mounting table 80 with a gap from the lower surface of the cushion pad where such displacement occurs.

Therefore, when an object is placed on the cushion pad 60, the relative position between the cushion pad 60 and the pressure sensitive switch SW is hardly displaced, and the pressure sensitive switch SW is turned on and erroneous detection is suppressed. On the other hand, when a person is seated, the relative position of the cushion pad 60 and the pressure sensitive switch SW changes and the pressure sensitive switch SW is turned on. Thus, it is possible to detect seating appropriately.

Further, in the seat device 5 in the present embodiment, the mounting table 80 is an elastic body that is elastic in the direction in which the lower surface of the cushion pad is displaced when a pressure greater than the pressure required when the pressure sensitive switch SW is turned on is applied. Is done.

For this reason, even if the lower surface of the cushion pad is greatly displaced, after the pressure sensitive switch SW is turned on, the mounting table 80 moves downward relative to the displacement of the lower surface of the cushion pad.

Therefore, even when an excessive pressing force is applied from the cushion pad 60, for example, when a person having a weight heavier than the normal range is seated, the pressing force from the cushion pad 60 to the pressure sensitive switch SW is reduced. can do. Thus, the durability of the pressure sensitive switch can be improved.

In the case of the present embodiment, since the mounting table 80 itself is an elastic body, the number of parts is reduced as compared with the case where the mounting table itself is made elastic without using the mounting table itself as an elastic body. And miniaturization can be achieved.

(2) Second Embodiment Next, a second embodiment suitable for the present invention will be described in detail with reference to the drawings. However, among the constituent elements of the seat device in the second embodiment, constituent elements that are the same as or equivalent to those in the first embodiment are assigned the same reference numerals, and redundant descriptions are omitted as appropriate.

The seat device according to the present embodiment is different from the seat device 5 according to the first embodiment in that the seat device includes a mounting table having a structure different from that of the mounting table 80 according to the first embodiment.

FIG. 10 is a view showing a state of the mounting table 90 in the second embodiment in a cross section taken along line YY of FIG. As shown in FIG. 10, the mounting table 90 in the present embodiment is fixed to the first mounting table 91 on which the pressure-sensitive switch SW is disposed, and the front frame 72 A of the support frame 72 that is separated from the first mounting table 91. And a joint member 93 that is connected to each of the first mounting table 91 and the second mounting table 92 and has elasticity.

The first mounting table 91 and the second mounting table 92 are plate-like members having rigidity higher than the degree of not being deformed by the pressure applied to the cushion pad 60. Examples of the first mounting table 91 and the second mounting table 92 include metal or ceramic. The material of the first mounting table 91 and the material of the second mounting table 92 may be different from each other or the same. In addition, the material of the first mounting table 91 or the second mounting table 92 may be the same material as that of the gantry 71 and the support frame 72.

The first mounting table 91 is arranged so that the arrangement surface on which the pressure sensitive switch SW is arranged and the cushion pad lower surface portion in the vertical direction with respect to the arrangement surface are parallel to each other. In this embodiment, the 1st mounting base 91 is arrange | positioned so that the whole surface by which the pressure sensitive switch SW is arrange | positioned and the cushion pad lower surface are parallel. The pressure sensitive switch SW arranged on the arrangement surface of the first mounting table 91 is fixed to the first mounting table 91 by a fixing member such as an adhesive.

The second mounting table 92 in the present embodiment is fixed to a frame portion along the cushion pad lower surface in the front frame 72A in a state substantially parallel to the cushion pad lower surface by a fixing tool such as a bolt and a nut. Note that the second mounting table 92 may be a part of the support frame 72. In this case, since the support frame 72 also serves as the second mounting table 92, the number of parts of the mounting table 80 can be reduced, and the size can be reduced.

The joint member 93 is a coil spring. This coil spring is also called a torsion spring or a torsion coil spring. FIG. 11 is a diagram illustrating a configuration of the joint member 93. As shown in FIG. 11, the joint member 93 includes a coil portion 93A, a first locking portion 93B integrally formed at one end of the coil portion 93A, and a second portion integrally formed at the other end of the coil portion 93A. It is comprised with the latching | locking part 93C.

The coil portion 93A is arranged at a boundary portion on the back side of the first mounting table 91 and the second mounting table 92 so that the central axis AX of the coil unit 93A is along the lower surface of the cushion pad. The central axis AX of the coil portion 93 A is in a state orthogonal to the length direction of the first mounting table 91 in relation to the first mounting table 91. In relation to a line passing through the middle between the first mounting table 91 and the second mounting table 92, the line is parallel to the line.

The coil portion 93 A may be disposed between the side surface of the first mounting table 91 and the side surface of the second mounting table 92, and is disposed on the front side of the first mounting table 91 and the second mounting table 92. May be. In addition, the coil portion 93 A does not necessarily have to be disposed at the boundary portion between the first mounting table 91 and the second mounting table 92.

The first locking portion 93 B has a rod shape in this embodiment, and is fixed to the back surface of the first mounting table 91 with an adhesive, for example.

In addition, as long as the 1st latching | locking part 93B is being fixed to the 1st mounting base 91, it may be fixed to other than the back surface in the 1st mounting base 91, and it is buried inside the said 1st mounting base 91. May be. Moreover, the shape of the 1st latching | locking part 93B can employ | adopt various shapes other than rod shape. However, from the viewpoint of strengthening the fixing of the first locking portion 93B to the first mounting table 91, it is preferable that the occupation amount of the first locking portion 93B per unit area with respect to the first mounting table 91 is larger. Further, a convex stopper may be formed on the first locking portion 93B.

The second locking portion 93 C has a rod shape in this embodiment, and is fixed to the back surface of the second mounting table 92 with, for example, an adhesive. The fixing position of the second locking portion 93C may be other than the back surface of the second mounting table 92, like the first locking portion 93B. Also, the shape of the second locking portion 93C may be other than a rod shape, similar to the first locking portion 93B.

In such a mounting table 90, when the lower surface of the cushion pad is displaced downward and a pressing force is applied from the lower surface of the cushion pad, the second locking portion 93C of the joint member 93 is a fulcrum, and the coil portion 93A is an operating point. The first locking portion 93B serves as a power point.

Accordingly, when a certain pressing force is applied to the first mounting table 91 on which the pressure sensitive switch SW is mounted, the first mounting table 91 connected to one of the joint members 93 is provided on the lower surface of the cushion pad. Moves downward with respect to displacement.

Therefore, even when an excessive pressing force is applied from the cushion pad 60, for example, when a person having a weight heavier than the normal range is seated, the pressure sensitive switch SW is controlled as in the first embodiment. The pressing force from the cushion pad 60 can be relaxed.

By the way, in this embodiment, a coil spring is applied as the joint member 93 having elasticity. However, for example, a tension spring having a hook at the tip of the coil spring may be applied. When this tension spring is applied, the center axis of the spring in the tension spring is in a state parallel to the length direction of the first mounting table 91 in relation to the first mounting table 91. The relationship between the line passing through the middle between the first mounting table 91 and the second mounting table 92 is perpendicular to the line.

Thus, since the joint member 93 has elasticity, the first mounting table 91 and the second mounting table 92 may or may not have elasticity, and the first mounting table 91 and the second mounting table can be freely formed. The elasticity of the mounting table 92 can be adjusted. When the first mounting table 91 and the second mounting table 92 have a rigidity higher than that which is not deformed by the pressure applied to the cushion pad as in this embodiment, only the elasticity of the joint member 93 is adjusted. It can also improve durability.

(3) Third Embodiment Next, a third embodiment suitable for the present invention will be described in detail with reference to the drawings. However, among the components of the seat device in the third embodiment, components that are the same as or equivalent to those in the first embodiment are assigned the same reference numerals, and redundant descriptions are omitted as appropriate.

The seat device of the present embodiment is different from the seat device of the second embodiment in that it includes a joint member having a structure different from that of the joint member 93 of the second embodiment.

FIG. 12 is a view showing a state of the mounting table 90 in the third embodiment in a cross section along the YY line of FIG. As shown in FIG. 12, the 1st mounting base 91 and the 2nd mounting base 92 of the mounting base 90 in this embodiment are connected via the joint member 94 which has elasticity.

The joint member 94 is a leaf spring. One end of the leaf spring is embedded and fixed in the first mounting table 91, and the other end of the leaf spring is embedded and fixed in the second mounting table 92. Further, the portions other than the one end and the other end of the leaf spring are exposed to the outside without being embedded in the first mounting table 91 and the second mounting table 92.

One end of the leaf spring may be fixed on the surface of the first mounting table 91 with an adhesive or the like, and the other end of the leaf spring is fixed on the surface of the first mounting table 91 with an adhesive or the like. May be. Moreover, the convex stopper may be formed in the surface of the one end part or other end part of a leaf | plate spring.

In short, one end of the leaf spring is fixed to the first mounting table 91, the other end of the leaf spring is fixed to the second mounting table 92, and at least a part other than the one end and the other end is the first mounting table. What is necessary is just to arrange | position between 91 and the 2nd mounting base 92.

In such a mounting table 90, when the lower surface of the cushion pad is displaced downward and a pressing force is applied from the lower surface of the cushion pad, one end portion fixed to the first mounting table 91 in the joint member 94 is the force point, the second The other end fixed to the mounting table 92 serves as a fulcrum, and the portion between the one end and the other end serves as an action point.

Therefore, when a certain pressing force is applied to the first mounting table 91 on which the pressure sensitive switch SW is mounted, the second connecting member 94 is connected to one of the joint members 94 as in the second embodiment. 1 The mounting table 91 moves downward with respect to the displacement of the lower surface of the cushion pad.

Therefore, even when an excessive pressing force is applied from the cushion pad 60, for example, when a person having a weight heavier than the normal range is seated, the pressure sensitive switch SW is controlled as in the second embodiment. The pressing force from the cushion pad 60 can be relaxed.

As described above, a tension spring may be applied instead of the leaf spring in the present embodiment.

(4) Fourth Embodiment Next, a fourth embodiment suitable for the present invention will be described in detail with reference to the drawings. However, among the constituent elements of the seat device in the fourth embodiment, constituent elements that are the same as or equivalent to those in the above embodiment are given the same reference numerals, and redundant descriptions are omitted as appropriate.

The seat device according to the present embodiment is different from the seat device 5 according to the first embodiment in that the seat device includes a mounting table having a structure different from that of the mounting table 80 according to the first embodiment. FIG. 13 is a view showing a state of the mounting table 100 in the fourth embodiment in a cross section taken along line YY of FIG.

As shown in FIG. 13, the mounting table 100 in this embodiment includes a plate 101 on which the pressure sensitive switch SW is mounted, and a support tool 102 for supporting a part of the plate 101 on the front frame 72A. It is supposed to be configured.

The plate 101 is a plate-like member having a rigidity that does not cause deformation due to pressure applied to the cushion pad 60. Examples of such a plate 101 include metal or ceramic. The material of the plate 101 may be the same as or different from that of the gantry 71 and the support frame 72.

The support tool 102 has elasticity, and in this embodiment, the support tool 102 includes a rod-shaped member 102A, a stopper 102B, a pedestal 102C, and an elastic member 103.

The rod-like member 102A is penetrated by a part of the plate 101 along the lower surface of the front frame 72A and the front frame 72A. The stopper 102B is connected to one end of the rod-like member 102A, and the pedestal 102C is connected to the other end of the rod-like member 102A.

The rod-shaped member 102A, the stopper 102B, and the pedestal 102C may be formed integrally or may be separate. Moreover, as a material of these rod-shaped member 102A, the stopper 102B, and the base 102C, a metal or resin etc. are mentioned, for example.

The elastic member 103 is a coil spring. The coil spring of this embodiment does not have the first locking portion 93B and the second locking portion 93C connected to the end of the coil spring in the second embodiment, and the coil spring of the present embodiment. End winding portions are formed at both ends of the. Note that the end turn portion is a portion formed flat on both ends of the coil spring, and does not act as a spring.

The elastic member 103 is arranged between the base 102C of the support 102 and the plate 101 in a state where the rod-like member 102A is inserted.

In the case of this embodiment, the height between the pedestal 102C and the plate 101 facing the pedestal 102C is made smaller than the height of the elastic member 103 (coil spring) in a no-load state. Therefore, the force that the elastic member 103 tries to extend always acts as a force for pressing the plate 101 against the front frame 72A, and the displacement of the plate 101 is suppressed.

The height between the pedestal 102C and the plate 101 facing the pedestal 111C may be approximately the same as the height of the elastic member 103 (coil spring) in a no-load state, but from the viewpoint of suppressing the displacement of the plate 101. The height is preferably smaller than the height of the coil spring.

In such a mounting table 100, when the lower surface of the cushion pad is displaced downward and a pressing force is applied from the lower surface of the cushion pad, the rod-shaped member 102A, the stopper 102B, and the base 102C are fulcrums, and the elastic member 103 (coil spring) is The point of action, the plate 101, acts as a force point.

Therefore, when a certain pressing force or more is applied to the plate 101 on which the pressure sensitive switch SW is placed, the plate 101 translates downward.

Therefore, even when an excessive pressing force is applied from the cushion pad 60, for example, when a person having a weight heavier than the normal range is seated, the pressing force from the cushion pad 60 to the pressure sensitive switch SW is reduced. can do.

Since the support 102 has elasticity in this way, the plate 101 may or may not have elasticity, and the elasticity of the plate 101 can be adjusted freely. In addition, when the plate 101 has a rigidity higher than that which does not deform due to the pressure applied to the cushion pad as in this embodiment, it is only necessary to adjust the elasticity of the elastic member 103 in the support tool 102, and the durability. Can also be improved.

(5) Fifth Embodiment Next, a fifth embodiment suitable for the present invention will be described in detail with reference to the drawings. However, among the constituent elements of the seat device in the fifth embodiment, constituent elements that are the same as or equivalent to those in the above embodiment are given the same reference numerals, and redundant descriptions are omitted as appropriate.

The seat device according to the present embodiment is different from the seat device according to the fourth embodiment in that a support device different from the support device 102 according to the fourth embodiment is provided. FIG. 14 is a view showing a state of the mounting table 100 in the fifth embodiment in a cross section taken along line YY of FIG.

As shown in FIG. 14, in the mounting table 100 in the present embodiment, a support tool 112 is provided instead of the support tool 102 in the fourth embodiment. The support 112 has elasticity as in the fourth embodiment, and includes a rod-shaped member 102A, a stopper 102B, and an elastic member 113.

The rod-shaped member 102A and the stopper 102B are made of resin, and the rod-shaped member 102A and the stopper 102B are integrally formed.

The elastic member 113 is made of resin, and is molded integrally with the other end of the rod-shaped member 102A of the support 112 while pressing the plate 101 against the front frame 72A. The shape of the elastic member 113 is an arch shape in this embodiment, but various shapes can be employed.

In such a mounting table 100, when the lower surface of the cushion pad is displaced downward and a pressing force is applied from the lower surface of the cushion pad, the rod-shaped member 102A and the stopper 102B are fulcrums, the elastic member 113 is the action point, and the plate 101 is the power point. Work as.

Therefore, when a pressing force of a certain level or more is applied to the plate 101 on which the pressure sensitive switch SW is placed, the plate 101 translates downward as in the fourth embodiment.

Therefore, even if an excessive pressing force is applied from the cushion pad 60, for example, when a person having a weight heavier than the normal range is seated, the pressure sensitive switch SW is controlled as in the fourth embodiment. The pressing force from the cushion pad 60 can be relaxed.

(6) Sixth Embodiment Next, a sixth embodiment suitable for the present invention will be described in detail with reference to the drawings. However, among the components of the seat device in the sixth embodiment, components that are the same as or equivalent to those in the first embodiment are given the same reference numerals, and redundant descriptions are omitted as appropriate.

FIG. 15 is a perspective view showing the mounting table 200 in the sixth embodiment, and FIG. 16 is a view of the mounting table in the sixth embodiment as viewed from the side of the mounting table. As shown in FIGS. 15 and 16, the mounting table 200 in the present embodiment is separated from the first mounting table 210 on which the pressure sensitive switch SW is disposed, and is fixed to the front frame 72 A. The second mounting table 220 includes a spring 230 that is connected to each of the first mounting table 210 and the second mounting table 220 and biases the first mounting table 210 toward the lower surface of the cushion pad. In FIG. 16, for convenience, only the front frame 72A is shown in cross section.

The first mounting table 210 is a plate-like member having a rigidity higher than that which is not deformed by the pressure applied to the cushion pad 60. One end of the first mounting table 210 in the longitudinal direction is pivotally supported on one end of the second mounting table 220 via a support pin PN.

The first mounting table 210 is provided with a plurality of through holes HL for positioning the pressure sensitive switch SW on a predetermined arrangement surface of the first mounting table 210. These through holes HL are also used for fixing the pressure sensitive switch SW arranged on a predetermined arrangement surface of the first mounting table 210 as necessary. For example, the pressure-sensitive switch SW is fixed to the first mounting table 210 using a fixing tool such as a pin or a screw inserted into the plurality of through holes HL. Note that the pressure sensitive switch SW may be fixed to the first mounting table 210 using a fixing tool such as an adhesive.

The first mounting table 210 is arranged such that the arrangement surface on which the pressure sensitive switch SW is arranged and the cushion pad lower surface portion in the vertical direction with respect to the arrangement surface are parallel to each other. In the present embodiment, the first mounting table 210 is disposed such that the entire surface on which the pressure sensitive switch SW is disposed and the lower surface of the cushion pad are parallel to each other.

As with the first mounting table 210, the second mounting table 220 is a plate-like member having a rigidity that does not deform due to the pressure applied to the cushion pad 60. The second mounting table 220 in the present embodiment includes a fixed part 221 and an inclined part 222.

The fixing portion 221 is fixed to a frame portion along the cushion pad lower surface in a state substantially parallel to the cushion pad lower surface in the front frame 72A by a fixing tool such as a bolt and a nut. The fixing parts PT1 and PT2 in the fixing part 221 are provided one by one at positions that are outside the width W of the first mounting table 210 and are equidistant from the longitudinal center of the fixing part 221.

The inclined portion 222 is connected to the fixing portion 221 of the second mounting table 220 and the arrangement surface of the first mounting table 210 on which the pressure sensitive switch SW is arranged in an inclined state. The first mounting table 210 is supported below the position 221. The inclined portion 222 is disposed at a position that does not overlap the first mounting table 210 in a direction orthogonal to the thickness direction of the first mounting table 210.

The upper end portion of the inclined portion 222 is integrally connected to the central portion in the longitudinal direction of the fixed portion 221, and the lower end portion of the inclined portion 222 is rotatable at one end portion of the second mounting table 220 via a support pin PN. It is pivotally supported. That is, the hinge portion HG is configured by one end portions of the inclined portion 222 and the first mounting table 210.

The inclined portion 222 is provided with a stopper STP that restricts the first mounting table 210 pivotally supported on the lower end portion of the inclined portion 222 from rotating upward (the cushion pad lower surface side).

The spring 230 is a torsion spring made of a single wire and having a pair of

arm portions

231A and 231B and a winding portion 232 provided between the pair of

arm portions

231A and 231B. And it is arrange | positioned at the lower surface side of the 2nd mounting base 220. In addition, the lower surface side of the first mounting table 210 and the second mounting table 220 is a surface side opposite to the surface to be opposed to the lower surface of the cushion pad.

The winding portion 232 is inserted into a support pin PN that pivotally supports the inclined portion 222 of the second mounting table 220 and the first mounting table 210. One arm portion 231 A is locked to a locking portion CTP 1 formed on the surface opposite to the arrangement surface of the pressure sensitive switch SW in the first mounting table 210. The other arm portion 231 B is locked to a locking portion CTP 2 formed on a surface opposite to the surface facing the lower surface of the cushion pad in the inclined portion 222 of the second mounting table 220.

In such a mounting table 200, the arm portion 231 B locked to the second mounting table 220 in a fixed state is an action point, and the support pin PN that pivotally supports the second mounting table 220 and the first mounting table 210. The inserted winding part 232 serves as a fulcrum, and the arm part 231B locked to the first mounting table 210 serves as a power point.

That is, regardless of whether the lower surface of the cushion pad is displaced downward, the spring 230 biases the first mounting table 210 toward the lower surface of the cushion pad. At this time, the first mounting table 210 is maintained by the stopper STP in an arrangement state substantially parallel to the lower surface of the cushion pad without rotating toward the lower surface of the cushion pad.

On the other hand, when the lower surface of the cushion pad is displaced downward and a force greater than the urging force of the spring 230 that urges the first mounting table 210 toward the lower surface of the cushion pad is applied from the cushion pad 60 to the first mounting table 210. The first mounting table 210 rotates downward.

(7) Other Embodiments The first to sixth embodiments have been described above as an example. However, the present invention is not limited to the first to sixth embodiments.

That is, the elastic mounting table 80 is applied in the first embodiment, and in the second and third embodiments, the first mounting table 91, the second mounting table 92, and the elastic joint member 93, A mounting table 90 including 94 was applied. Moreover, in the said 4th Embodiment and the said 5th Embodiment, the mounting base 100 containing the plate 101 and the

support tools

102 and 112 which have elasticity was applied. In the sixth embodiment, the mounting table 200 including the first mounting table 210, the second mounting table 220, and the spring 230 is applied. However, as long as the mounting table having elasticity in the direction in which the lower surface of the cushion pad is displaced is applied, a form other than the above embodiment may be used.

For example, instead of the fixing device of the first embodiment, the second embodiment, the third embodiment, or the sixth embodiment, the support device 102 of the fourth embodiment or the support device of the fifth embodiment. 112 may be applied. In this case, the pressing force from the cushion pad 60 to the pressure sensitive switch SW can be further reduced.

Alternatively, instead of the

joint members

93 and 94 of the second embodiment or the third embodiment, the elastic member 103 (coil spring) of the fourth embodiment is applied, and one end of the coil spring is used as the first mounting table. While fixing to the lower surface of 91, the form which fixes the other end of the said coil spring to the upper surface of the 2nd mounting base 92 may be applied.

Alternatively, instead of the

joint members

93 and 94 of the second embodiment or the third embodiment, a mounting table having a thickness smaller than the thickness of the first mounting table 91 and the second mounting table 92 is applied. The mounting table may be connected to each of the first mounting table 91 and the second mounting table 92. Note that this mounting table is made of resin, even if it is a metal, as long as it is a member that is elastic in the direction in which the lower surface of the cushion pad is displaced when a pressure greater than the pressure required when the pressure sensitive switch is turned on is applied. May be. In addition, the thickness of the first mounting table 91 and the second mounting table 92 is a member that is elastic in the direction in which the lower surface of the cushion pad is displaced when a pressure larger than the pressure required when the pressure sensitive switch is turned on is applied. It is not essential to make it thinner.

Alternatively, in the fourth embodiment or the fifth embodiment, the plate 101 is disposed on the lower surface side of the frame, but the plate 101 may be disposed on the upper surface side of the frame. Further, the rod-like member 102A, the stopper 102B, and the pedestal 102C in the

support tools

102 and 112 may be omitted, and the

elastic members

103 and 113 in the

support tools

102 and 112 may be directly pressed against and supported by the plate 101. . When the plate 101 is disposed on the upper surface side of the frame, in the fourth embodiment, the elastic member 103 and the base 102C are disposed on the upper surface side of the frame (the side facing the lower surface of the cushion pad), and the lower surface side of the frame. The stopper 102B is disposed on the surface. On the other hand, in the fifth embodiment, the elastic member 113 is disposed on the upper surface side of the frame, and the stopper 102B is disposed on the lower surface side of the frame.

Alternatively, in the first to third embodiments and the sixth embodiment, the pressure sensitive switch SW is disposed below the fixed portion fixed to the front frame 72A in the second mounting table 92 or 220. Although the surface is located, the arrangement surface of the pressure sensitive switch SW may be located above the fixed portion. That is, the inclined portion of the mounting table 80 in the first embodiment, the inclined portions of the first mounting table 91 and the second mounting table 92 in the second and third embodiments, and the second mounting table 220 in the sixth embodiment. The inclined portion 222 may be inclined above the fixed portion fixed to the front frame 72A and away from the fixed portion. In other words, the arrangement surface on which the pressure-sensitive switch is arranged on the first mounting table and the fixed part on the second mounting table need only have a step in the vertical direction. However, the mounting table has an inclined part extending downward, and the switch arrangement part where the pressure sensitive switch is arranged on the mounting table is connected to the inclined part in a state parallel to the lower surface of the cushion pad. It is preferable to have a lower position than the attachment part attached to the member that does not move in conjunction with the displacement of the cushion pad due to the seating. In this way, it is possible to reduce the excessive application of the force received from the cushion pad to the inclined portion and the like, compared to the case of the mounting table having the inclined portion extending upward. Can be improved. In addition, as long as the inclination site | part extends below as a whole, it may become flat on the way or may extend upward. Similarly, the switch arrangement part may extend upward or downward in the middle as long as even the part where the pressure sensitive switch SW is arranged is parallel.

In addition, the above-mentioned fixed part (attachment part) may be one point or two or more points. However, when there are two or more fixed parts (attachment parts), the fixed part (attachment part) is more affected when an impact is applied than when the fixed part (attachment part) is one point. Can be reduced. For this reason, it can suppress that the pressure added to a pressure sensitive switch resulting from a fixed position shifting | deviating becomes too large or too small. In particular, as in the sixth embodiment, the fixing portions PT1 and PT2 are provided at positions that are outside the width W of the first mounting table 210 and equidistant from the center in the longitudinal direction of the fixing portion 221. In this case, the displacement of the fixed position can be further reduced. The fixing parts PT1 and PT2 as in the sixth embodiment can also be applied to the first to fifth embodiments.

In the above embodiment, the mounting table is attached to the upper end portion of the front frame 72A. However, the mounting site of the mounting table may be, for example, the gantry 71, the rear frame 72B, the left frame 72C, or the right frame 72D. Moreover, although the mounting site | part of the mounting base was made into one place of the one end part of a mounting base, it may be two places of the both ends of a mounting base, for example, and may be made into three or more places. In addition, when the mounting site of the mounting table is two places on both ends of the mounting table, for example, one end of the mounting table is attached to the front frame 72A and the other end is mounted on the rear side so that the mounting table crosses the opening of the support frame 72. It can be attached to the frame 72B. Further, in the case of the first to third embodiments and the sixth embodiment, the mounting table may be fixed to the side surface of the support frame 72 by welding or the like. In short, the mounting table only needs to be attached to a member that does not move in conjunction with the displacement of the cushion pad due to the seating.

In the first embodiment, the mounting table 80 is fixed to the upper end portion of the front frame 72A with bolts and nuts. However, as shown in FIG. 17, a part of the mounting table 80 may be formed integrally with the front frame 72A. FIG. 17A is a schematic view of the support frame 72 as viewed from directly above the side on which the cushion pad 60 is placed, and FIG. 17B shows the RR line in FIG. It is a figure which shows a part of cross section along. Although FIG. 17 shows a case where a part of the mounting table 80 is formed integrally with the front frame 72A, as described above, the present invention is not limited to the front frame 72A. That is, it is only necessary that a part of the mounting table 80 is formed integrally with a member that does not move in conjunction with the displacement of the cushion pad due to the seating. Further, the second mounting table 92 in the second embodiment or the third embodiment or a part of the second mounting table 220 in the sixth embodiment moves in conjunction with the displacement of the cushion pad due to the seating. It may be formed integrally with a non-member. As described above, when a part of the mounting table is formed integrally with a member that does not move in conjunction with the displacement of the cushion pad due to the seating, a part of the mounting table is not formed integrally with the member. Compared to the above, displacement due to vibration is avoided, so that seating can be detected more appropriately. Further, as much as the molding is performed integrally, the accuracy of the position of the mounting table relative to the member that does not move in conjunction with the displacement of the cushion pad due to the seating can be improved and the material cost can be reduced. In addition, when a part of the mounting table is formed integrally with a member that does not move in conjunction with the displacement of the cushion pad due to the seating, it does not move in conjunction with the displacement of the cushion pad due to the seating in the mounting table. The attachment part attached to the member is a base part of a part protruding into the opening of the support frame 72.

In the first to sixth embodiments, the mounting table is displaced in the direction in which the lower surface of the cushion pad is displaced when a pressure greater than the pressure required when the pressure sensitive switch is turned on is applied. However, the mounting table may be displaced in a direction in which the lower surface of the cushion pad is displaced before a pressure larger than the pressure required when the pressure sensitive switch is turned on is applied. However, it is preferable that the mounting table is displaced in the direction in which the lower surface of the cushion pad is displaced when a pressure larger than the pressure required when the pressure sensitive switch is turned on is applied. In this case, since the mounting table is not displaced before the pressure sensitive switch is turned on, the seating can be detected more appropriately than when the mounting table is displaced before the pressure sensitive switch is turned on.

In the above embodiment, the pressure sensitive switch SW is disposed below the spring bottom. However, if the pressure sensitive switch SW is disposed below the cushion pad 60 with a gap from the lower surface of the cushion pad, the pressure sensitive switch SW may not be below the spring bottom. Also good.

In the above embodiment, the number of pressure sensitive switches is one, but it may be two or more. In this case, a plurality of pressure sensitive switches may be arranged on one mounting table, and one or two or more pressure sensitive switches may be arranged on each of the plurality of mounting tables.

Moreover, in the said embodiment, although the cushion member 40 was affixed on the lower surface of the 1st insulating sheet 11, the said cushion member 40 may be abbreviate | omitted. When the cushion member 40 is omitted, the pressure sensitive switch SW can be made thinner by that amount. Even if the cushion member 40 is omitted, the pressure sensor SW is pressed on the upper side of the pressure-sensitive switch SW, so that the pressure-sensitive switch SW is not turned on by the omission of the cushion member 40.

In the above embodiment, the shape of the spring 73 is S-shaped, but various shapes such as a Z-shape can be applied. In addition, the repetition interval of the bent part of the spring 73 may be continuous, may be every predetermined interval, or may be random. In addition, the shape of the bent portion to be repeated may be the same, and is different, for example, by combining an S-shape and a Z-shape, or by combining shapes obtained by inverting the U-shape or U-shape. May be. Further, the number of repetitions of the bent portion may be omitted, but it is preferable that it is present. The plurality of springs 73 are stretched in the front-rear direction of the cushion pad 60, but may be in the left-right direction or the oblique direction.

The components in the seat device 5 are combined, omitted, modified, or modified as appropriate without departing from the scope of the present application, in addition to the contents shown in the first to sixth embodiments or other embodiments described above. A well-known technique can be added.

The present invention can be used for a seat of a vehicle such as a vehicle, and can be used particularly for a seat where a seat belt should be worn.

DESCRIPTION OF SYMBOLS 1 ... Seating sensor 5 ... Seat apparatus 10 ... 1st electrode sheet 11 ... 1st insulating sheet 12 ...

1st electrode

13, 23 ... Terminal 20 ... 2nd electrode sheet DESCRIPTION OF SYMBOLS 21 ... 2nd insulating sheet 22 ... 2nd electrode 30 ... Spacer 31 ... Opening 32 ... Slit 40 ... Cushion member 60 ... Cushion pad 70 ... Cushion mounting unit 71 ... Stand 72 ...

Support frame

73, 230 ...

Spring

80, 90, 100, 200 ... Mounting table 91, 210 ... First mounting table 92, 220 ... Second mounting table 93, 94 ... Joint member 101 ...

Plate

102, 112 ... Supporting tool 102A ... Bar-shaped member 102B ... Stopper 102C ...

Base

103, 113 ... Elastic member SW ... Pressure switch

Claims

A plurality of springs arranged side by side in the opening of the frame, and
A cushion pad placed on the plurality of springs;
A mounting table attached to a member that does not move in conjunction with the displacement of the cushion pad due to the seating;
A pressure-sensitive switch disposed on the mounting surface of the mounting table with a gap from the lower surface of the cushion pad;
The seating device according to claim 1, wherein the mounting table has elasticity in a direction in which the lower surface of the cushion pad is displaced.
The seating device according to claim 1, wherein the mounting table is displaced in a direction in which the lower surface of the cushion pad is displaced when a pressure larger than a pressure required when the pressure-sensitive switch is turned on is applied.
The mounting table has an inclined part extending downward, and the switch arrangement part in which the pressure-sensitive switch is arranged in the mounting table is connected to the inclined part in a state parallel to the lower surface of the cushion pad, The seating device according to claim 1 or 2, wherein the seating device is located at a position lower than an attachment portion attached to the member in the mounting table.
The seat device according to any one of claims 1 to 3, wherein the mounting table is an elastic body.
The mounting table includes a first mounting table on which the pressure sensitive switch is disposed, a second mounting table that is separated from the first mounting table and is fixed to the member, the first mounting table, and the second mounting table. The seat device according to any one of claims 1 to 4, further comprising a joint member connected to each other and having elasticity.
The mounting table includes a first mounting table on which the pressure sensitive switch is disposed, a second mounting table that is separated from the first mounting table and is fixed to the member, the first mounting table, and the second mounting table. The seat device according to any one of claims 1 to 4, further comprising: a spring coupled to each of the cushion pads and a spring for urging the first mounting table on a lower surface side of the cushion pad.
The seat device according to claim 5 or 6, wherein the first mounting table and the second mounting table have a rigidity higher than a degree of not being deformed by a pressure applied to the cushion pad.
The mounting table includes a plate on which the pressure-sensitive switch is disposed, and a support for supporting a part of the plate on the member, and the support has elasticity. The seat apparatus of Claim 1 or Claim 2.
The seat device according to claim 8, wherein the plate has a rigidity higher than a degree that the plate is not deformed by pressure applied to the cushion pad.
The seat device according to any one of claims 1 to 9, wherein the mounting table has at least two fixing parts fixed to the member.
The seat device according to any one of claims 1 to 10, wherein a part of the mounting table is formed integrally with the member.