CN101941408A

CN101941408A - Airbag device and manufacturing method thereof

Info

Publication number: CN101941408A
Application number: CN2010102249773A
Authority: CN
Inventors: 乌尔里克·里克
Original assignee: GM Global Technology Operations LLC
Current assignee: GM Global Technology Operations LLC
Priority date: 2009-07-03
Filing date: 2010-07-05
Publication date: 2011-01-12
Anticipated expiration: 2030-07-05
Also published as: RU2527621C2; RU2010127257A; CN101941408B; DE102009031615A1

Abstract

The invention relates to an airbag device (1), comprising an airbag (2) for filling air (19), wherein the airbag is provided with a first chamber (5) capable of being filled with air (19), the first chamber (5) is provided with a first area (8) and at least another area (9) along a first direction (10), the airbag is further provided with a second chamber (6) connected with the first chamber (5) along a second direction (11) deviating from the first direction (10). For guaranteeing effectiveness and solidness of the airbag and locating the airbag immediately, the airbag (2) can be constructed as follows: the second chamber (6) is capable of being filled with air (19) through a first area (8) of the first chamber (5), wherein the flow direction of the main air corresponds to the second direction (11) and/or the same as the second direction (11).

Description

Airbag apparatus and preparation method thereof

Technical field

The present invention relates to a kind of airbag apparatus, comprise the air bag that is used for filling gas.The invention still further relates to a kind of method that is used to make described airbag apparatus.

Background technology

The side air bag usually is set on automobile, its role is to guarantee when automobile generation side collision, protect passenger in the car.Described air bag can be divided into different chambers, and wherein, the different chamber of air bag plays different protective effects, and for example the chest chamber is protected passenger's upper body, pelvis chamber protection passenger's lumbar region, head chamber protection passenger's head.The side gas bay system that employing has integral type head protection also is known.

From for example being that the DE19930157A1 of the immediate prior art of the present invention is known, when automobile generation side collision, gas at first flows into from gas generator in the chest chamber of air bag, expands to head chamber by one or more flow channels then.

Summary of the invention

Technical matters to be solved by this invention is, a kind of airbag apparatus that has air bag is provided, it can guarantee air bag effectively, firmly solid and be positioned in time.

Above-mentioned technical matters solves by a kind of like this airbag apparatus, this airbag apparatus comprises the air bag that is used for filling gas, but this air bag has first chamber of filling gas, this first chamber has a first area and another zone at least along first direction, described air bag also has second chamber that links to each other with described first chamber along second direction, wherein, second direction departs from first direction, according to the present invention, described bladder configurations becomes like this, that is, but described second chamber is by the first area filling gas of described first chamber, wherein, main gas flow corresponding to described second direction and/or with described second direction in the same way.

The claimed technical theme of the present invention is a kind of transportation means that is applied in, for example the airbag apparatus on automobile, aircraft, the boats and ships etc.A kind of like this airbag apparatus is also protected the passenger in addition when the collision of transportation means generation afterbody, front portion and/or side.

Described airbag apparatus has one or more air bags, is used for the gas of filling from one or more gas generators.Described air bag (also becoming safety air bag) generally can be used as preceding air bag, rear gasbag, side air bag, bottom air bag or roof airbag, is used to protect the passenger of chaufeur, copilot or back row's seat.Described air bag can be arranged on side, central authorities, upside or the downside of seat at this, and wherein, described seat can be front-row seats or back seat.

Described airbag apparatus preferably is installed in the side of armrest as side gas bay system.In this form of implementation further preferably, the expansion direction of air bag or direction of ejection be parallel to seat or/or automobile forwards to.

But described air bag has first chamber of filling gas, and this first chamber has a first area and along first direction, just for example with another zone at least of this adjacent setting in first area.

Described air bag also has second chamber that links to each other with described first chamber along second direction, and wherein, second direction departs from first direction.First direction and second direction each other form one and preferably are at least 30 °, especially are at least 60 °, particularly greater than 80 ° angle.Described second chamber and/or directly mutually mobile be communicated with indirectly preferred with first chamber.

According to the present invention, the first area filling gas of described second chamber by first chamber, wherein, main gas flow and second direction are corresponding and/or with it in the same way.

Main gas flow and second direction are preferred to form one mutually less than 45 °, particularly less than 30 °, especially less than 15 ° angle.In a kind of preferred design, main gas flow is directly extended to second chamber from the first area of first chamber.Described main gas flow preferably can be understood like this, promptly, the gas stream that flows in second chamber is bigger than the stream of the gas in other zone that flows into first chamber, and/or described other zone is to small part, pass through described second chamber by gas filling more than the preferred major part that is 50%, and/or described second chamber is before being connected described other zone on the gas flow direction.

For example can realize along the mobile connection of main gas flow by one or more input pipes, flow channel, valve and/or by the simple spatial communication between first and second chambers.

In a kind of optional design, also preferentially diffusion transmits along second direction towards second chamber by direct path by described mobile connection in the first area of described gas filling partially or completely first chamber.Described second chamber is filling gas partly or entirely before the second area of first chamber is by gas filling preferably.

By the mutual layout of described each chamber and associated mobile connection, improved the gas flow guiding.By first chamber is divided into a plurality of zones, wherein, second chamber only or fatefully comes filling gas by the first area of first chamber, and second chamber is obtained also preferential with respect to other zone of first chamber thereby influenced described each chamber or regional sequence of expansion.Therefore described air bag can be placed in securely sooner and solid or launch or be opened on the correct position, and follows fully by gas filling, forms better a kind of thus or protects effect faster.

Each zone of described first chamber for example has a common outer cover, wherein, these zones are by a separated place, for example by a connecting portion fixing or that adhere to, pass through joint close, by the gap or by grid or netting etc., aspect the connection of flowing and/or physically and/or on the object completely or partially separate mutually piecemeal.Can have any different aspect geomery in these zones, wherein, the first area is preferably greater than second area.

Hem seam zygonema especially identical with second direction by one in first chamber or the phase near orientation realizes separating of described each zone.In a preferred embodiment, this hem seam zygonema makes the gas flow channel of going to second chamber narrow down.By such measure, described air bag launches to be restricted with respect to the expansion of the position along continuous straight runs of packing in first stages of deployment.In addition, by narrowing down of described flow channel, the speed that gas is gone to second chamber increases, and realizes preferentially that thus the expansion of second chamber launches.

First chamber of described air bag is preferably designed for the chest safety air bag that is used to protect passenger's upper body, and it is preferably designed at its expansion yardstick on first direction of the expansion scale ratio on the second direction bigger.Guarantee the protection of whole upper body from the waist to the shoulder thus.

Second chamber of described air bag is preferably designed for the head safety air bag of protection head of passenger.It for example is designed to bowl-type, and wherein, this bowl-type has an interior arching.The outside with arching in this of described second chamber is designed to for this reason or is designed for basically tackling the bump of head.

Because the present invention has improved the gas flow guiding situation of air bag and has correspondingly realized faster and more effective gas filling, thus can advantageously must be bigger than traditional head safety air bag with second chamber design as the head safety air bag.Up to now, the size of traditional head safety air bag is restricted, because head airbag is hung the danger on safety strap for example when exist expanding, and expands too lentamente and launches or the danger of non-effective location.

The protection potential of many traditional head airbags usually only designs at such stand under load situation, that is, obstacle vertically hits mesosomatous personnel (50% dummy).Exceed the personnel outside one 50% dummy's the range of sizes for the stature size or leave the personnel at its normal seat, protective effect then weakens.By getting second chamber design bigger and overcoming aforementioned difficulties simultaneously, can provide more fully protection with the passenger who is in diverse location for the passenger of different stature sizes.

In a kind of possible embodiment, the seat dorsad of described air bag outer cover and/or automobile forwards to (following grooves that all is referred to as) such as groove, recess or otch that is arranged on transition position of that side design from first chamber to second chamber.Described groove stop described air bag when filling gas and/or hang afterwards or jam at passenger's shoulder and/or draw automatically only on the safety strap.Impel air bag to launch early, fast and effectively thus.

In order to guarantee that second chamber just has the shape of expectation at least at the state of part filling gas, described second chamber has the device that is used for moulding, and this device for example is designed to check strap or other shape limiting device or shape and constitutes device.This device that is used for moulding is an independent member preferably, and the outside and/or inboard the linking to each other of this independent member and described second chamber, wherein, described connection can realize by a connection fixing and/or adhesion.

In order to stablize second chamber, described first chamber has and is used for stable device, especially joint close, plate, air gap or any other and is applicable to the device of support.Describedly be used for stable device and for example extend towards second chamber on arc ground, and in a preferred implementation, constitute a semi-round zone, but this semi-round zone is preferably by the second chamber filling gas from first chamber.The predetermined position of described second chamber is used for stable device and is kept better along second direction by described, that is to say to have stoped second chamber for example to sink and/or turn over to an inclination.

Except first and second chambers, described airbag apparatus can have one or more other chambers, and these other chambers can be in difference aspect function, size, shape, layout and/or the inflation sequence.Therefore, these other chambers for example play the effect of shank air bag of the pelvis air bag and/or the protection occupant leg of protection waist.The gas filling of this or these other chamber preferably is close to the gas filling of the first area of first chamber and side by side carries out.

According to a kind of preferred design, the method for making of described airbag apparatus comprises following serial of methods step: contrary first direction at least partial section is rolled and/or folding second chamber, and contrary second direction is rolled and/or folding second chamber, and then contrary first direction is rolled and/or folding first chamber.At last with air bag packing be installed in the air bag chamber of seat handrail or a predetermined position of described transportation means.

Described air bag has the volume pleat under the state of rolling and/or folding, wherein, this volume pleat is made up of the volume pleat of first chamber and two kinds of volume pleats of second chamber.The opening of described volume pleat is the lateral surface of immediate with it dorsad seat handrail when air bag is installed on the armrest as the side air bag for example.Thus, the volume pleat can roll up put and/or be deployed in the immediate window of armrest on.

In a kind of possible embodiment, by the inflow of gas, launch the first area of first chamber at first part, and wherein, the volume pleat of first chamber about 1/4 to 1/3 is unfolded.Especially first chamber is unfolded, till arriving first area and the separated hem seam zygonema of second area.Described hem seam zygonema preferably has the effect that barrier gas flows into towards other zone in the state that this part of air bag is launched.This lignilite stops gas further towards the second area expansion, but sets up the mobile connection towards second chamber.Thus, launch when it especially may support two kinds of described second chamber volume pleats, and second chamber was launched along second direction moment.Then preferred, first chamber also is in the first area expansion of convolution state (if also existing), and launches the second area of first chamber.

The volume pleat of described air bag for example with immediate window of seat handrail or corresponding automobile sidewall on launch.Launch this expansion on window of mobile connection airbag support towards second chamber that forms by the part of first chamber, at this moment, gas is communicated with by flowing to propagate along main gas flow and spreads.Therefore guarantee the second chamber moment expansion too.

Description of drawings

With reference to the accompanying drawings and by preferred embodiment further feature of the present invention, advantage and effect are described in further detail.In the accompanying drawing:

Fig. 1 is according to airbag apparatus of the present invention vertical vertical cut-away schematic view along vehicle traveling direction under state of activation, each chamber, zone and a gas flow according to air bag of the present invention shown in it;

Fig. 2 is according to airbag apparatus of the present invention vertical vertical cut-away schematic view along vehicle traveling direction under state of activation, the convolution direction that is used to make this airbag apparatus shown in it equally.

The specific embodiment

Corresponding mutually or identical member indicates with identical Reference numeral in this two width of cloth figure.

A preferred embodiment of the present invention shown in Fig. 1, this illustrates the airbag apparatus 1 that the has an air bag 2 vertical vertical section along vehicle traveling direction.Air bag 2 is installed in the side of the handrail 3 of automotive seat under unactivated state, wherein, the air bag 2 shown in Fig. 1 is under the state of activation.

Air bag 2 comprises an osed top outer cover 4, and the longitudinal extension size of this outer cover 4 (along the arrow B direction among Fig. 2) is bigger 2.5 times than its horizontal expansion size (along the arrow A direction among Fig. 2).In addition, air bag 2 has one first chamber 5, second chamber 6 and one the 3rd chamber 7, and wherein, described chamber 5,6,7th is divided by its function of bearing.First chamber 5 is chest chambers 5, and it is used to protect passenger's upper body.Second chamber 6 is head chamber 6, and it is used to protect passenger's head.The 3rd chamber 7 is pelvis chambers 7, and it is used to protect passenger's waist.

Chest chamber 5 has a first area 8 and a second area 9, and this second area 9 links to each other with first area 8 along first direction 10, and wherein, first direction 10 points to along the horizontal expansion direction (along the arrow A direction) of air bag 2.Described chest chamber 5 is arranged between head chamber 6 and the pelvis chamber 7, and wherein, head chamber 6 links to each other with chest chamber 5 along second direction 11.At this, second direction 11 is pointed to along the longitudinal extension direction (along the arrow B direction) of air bag 2.Described pelvis chamber 7 contrary second directions 11 link to each other with chest chamber 5.

Forwards the having one and be arranged on of described dorsad seat of the outer cover 4 of chest chamber 5 and/or automobile from the groove 20 of chest chamber in the transitional region of head chamber transition to ground.When air bag 2 is activated when putting on the air at airbag apparatus 1, this groove 20 prevents that air bag 2 from hanging at passenger's shoulder and/or only draw automatically on the safety strap.Therefore described groove 20 impels air bag 2 to launch early, fast and effectively.

In addition, air bag 2 has a gas generator 12, and wherein, the formation chest chamber 5 that this gas generator 12 is arranged on outer cover 4 is that side of the border side of first direction 10 dorsad.

The first area 8 of chest chamber 5 and second area 9 are separated mutually by a partitioning slot 13.This partitioning slot 13 1: 14 extending since a fringe region that is arranged on outer cover 4 along first direction 10, this 1: 14 roughly is arranged on the transition position of chest chamber 5 to 7 transition of pelvis chamber.Described partitioning slot 13 oblique horizontal central line ground in air bag 2 extend, and approximately vertically extend to from the intermediate location of chest chamber 5 to head chamber 6 transition always.

The second area 9 of chest chamber 5 adds alternatively has a stable joint close 15.This stability joint close 15 since the fringe region of an outer cover 4 that is arranged on chest chamber 5 along first direction 10 1: 16, curved or semicircle ground extends to thirdly 17 in the fringe region of an outer cover 4 that is arranged on head chamber 6 along first direction 10 always, and forms one semi-round regional 21 thus.By this stability joint close 15, prevented that head chamber 6 from sinking to subsiding and/or lateral tilt towards chest chamber 5.

In addition, head chamber 6 has a check strap 18, and wherein, this check strap 18 is arranged on the center of head chamber 6, and interconnects in two zones with outer cover 4, especially sews up.The effect of this check strap 18 is, makes head chamber 6 have a predetermined shape when airbag apparatus 1 is activated, and wherein, this reservation shape is a bowl-type.This bowl-like shape has an interior arching part, is used to tackle passenger's head collision.

For example bump when being activated at airbag apparatus 1 by automobile, at first, described chest chamber 5 until the first area 8 of described partitioning slot 13 and described pelvis chamber 7 by gas 19 fillings.Afterwards, described head chamber 6 is inflated.At last, the second area 9 of chest chamber 5 is by head chamber 6 filling gass.Therefore, when described airbag apparatus 1 was activated, gas 19 at first flowed into from gas generator 12 in the first area 8 of chest chamber 5.Described gas 19 is propagated diffusion along first direction 10 on the one hand, and the first area 8 with chest chamber 5 tentatively is inflated to described partitioning slot 13 places thus.Accumulate in the first area of chest chamber 5 because partitioning slot 13 stops gas 19 further to spread propagation and gas along first direction 10, the meanwhile contrary second direction 11 of pelvis chamber 7 (direction of contrary arrow E) turnup goes out.Described gas 19 is turned to by described partitioning slot 13 guidings on the other hand and flows along a past head chamber 6 of the main gas flow that forms thus, thus with head chamber 6 moments expansion.After head chamber 6 aeration periods or inflation were finished, gas 19 chamber 6 from the head flow in the described semicircular area 21 that is made of stable joint close 15 and in the second area 9 of chest chamber 5.Therefore, influence the inflation sequence of air bag 2, thereby form following inflation sequence by described partitioning slot 13:

1. pelvis chamber 7 and first area 8 inflations

2. head chamber 6 inflations

3. second area 9 inflations

As described by Fig. 2, when making air bag 2, in chest chamber 5, end regions is roughly concordant with the hachure C among Fig. 2 thus along second direction 11 (direction of arrow E) turnup for pelvis chamber 7.The inside turnup of described pelvis chamber 7 is supported like this for the first area 8 of chest chamber 5 and the preliminary inflation of pelvis chamber 7, promptly, gas in the first area 8 of inflow chest chamber 5 is filled to first area 8 till the described partitioning slot 13 always, and pelvis chamber 7 is rolled out and inflation simultaneously at this moment.

Then, in manufacturing process with the contrary first directions 10 of the head chamber 6 of air bag 2 convolution partly, that is to say, 1/4 to 3/4 section convolution of outer cover 4 lateral dimensions (along the arrow A direction) is got up that contrary then second direction 11 gets up described head chamber 6 whole convolutions until fine rule D place.The part convolution of described head chamber 6 can be realized gas 19 is directed in the head chamber 6 along second direction 11 targetedly, the head chamber 6 moments inflation that contrary second direction 11 convolutions can be got up thus, and make it at first directed also subsequently also along first direction 10 orientations along second direction 11.

Last step of described making air bag comprises that contrary first direction 10 is with chest chamber 5 convolutions.At this, at first from second area 9, then be first area 8 with described chest chamber 5 to described gas generator 12 convolutions.Described chest chamber 5 convolutions like this get up to support targetedly gas 19 to propagate along second direction 11 diffusions by a kind of mode of chimney effect.Therefore predesignated from the main gas flow (along second direction 11, by shown in the arrow B) of chest chamber 5 to head chamber 6.

Form the volume pleat for the making of described air bag 2, this volume pleat open the direction immediate with it lateral surface of handrail 3 of automotive seat dorsad so that realize described air bag 2 with these handrail 3 immediate automobile window on expansion.Expansion on automobile window helps gas 19 to propagate along main gas flow diffusion equally.

Reference numerals list

1 airbag apparatus

2 air bags

3 handrails

4 outer covers

5 first chambers/chest chamber

6 second chambers/head chamber

7 the 3rd chambers/pelvis chamber

8 first areas

9 second areas

10 first directions

11 second directions

12 gas generators

13 partitioning slot

14 first points

15 stable joint closes

16 second points

17 thirdly

18 check straps

19 gases

20 grooves

21 semicircular area

Claims

1. an airbag apparatus (1), comprise the air bag (2) that is used for filling gas (19), but this air bag has first chamber (5) of filling gas (19), wherein, this first chamber (5) has a first area (8) and another zone (9) at least along first direction (10), described air bag also has second chamber (6) that links to each other with described first chamber (5) along second direction (11), wherein, described second direction (11) departs from described first direction (10), it is characterized in that, described air bag (2) is constructed in this wise, promptly, described second chamber (6) by described first chamber (5) first area (8) but filling gas (19), wherein, main gas flow corresponding to described second direction (11) and/or with described second direction (11) in the same way.

2. by the described airbag apparatus of claim 1 (1), it is characterized in that described air bag (2) is designed to the side air bag and/or described air bag (2) can be provided with laterally and/or be arranged in the seat handrail (3) of automobile.

3. by claim 1 or 2 described airbag apparatus (1), it is characterized in that, described first area (8) and described another zone (9) have a common outer cover (4), and has a separated place in this outer cover (4) inside, especially a partitioning slot (13), this separated place make described first area (8) and described another zone (6) flow be communicated with aspect and/or physically and/or on the object at least partial section separate mutually.

4. by the described airbag apparatus of above-mentioned each claim (1), it is characterized in that described separated place (13) preferentially direct into described second chamber (6) along main gas flow with described gas (19) from described first area (8).

5. by the described airbag apparatus of above-mentioned each claim (1), it is characterized in that described first chamber (5) is designed to the chest safety air bag of automobile and/or the head safety air bag that described second chamber (6) is designed to automobile.

6. by the described airbag apparatus of above-mentioned each claim (1), it is characterized in that, described airbag design becomes when filling gas (19) and/or has a groove (20) afterwards, and wherein, this groove (20) is designed for and prevents that described air bag from hanging one and only draw automatically on the safety strap.

7. by the described airbag apparatus of above-mentioned each claim (1), it is characterized in that described first chamber (5) has at least one device that is used to stablize described second chamber (6), wherein, describedly be used for stable device and be preferably designed to a joint close (15).

8. by the described airbag apparatus of above-mentioned each claim (1), it is characterized in that, described second chamber (6) has at least one device that is used for moulding (18), wherein, this device (18) that is used for moulding is preferably designed for check strap (18), and the expansion that this check strap is designed for described second chamber (6) is limited in the predetermined shape.

9. by the described airbag apparatus of above-mentioned each claim (1), it is characterized in that described second chamber (6) is designed to when filling gas (19) and/or has similar bowl-shape and/or corresponding to bowl-shape shape afterwards.

10. by the described airbag apparatus of above-mentioned each claim (1), it is characterized in that, except with second chamber (6) that described first chamber (5) links to each other, another chamber (7) links to each other with first chamber (5) at least in addition.

11. by the described airbag apparatus of above-mentioned each claim (1), it is characterized in that, described air bag (2) is designed to like this, promptly, the first area (8) that at first is described first chamber (5) is filled with gas (19), then preferential to described second chamber (6) filling gas, give second area (9) filling gas (19) of described first chamber (5) then.

12., it is characterized in that described air bag (2) is designed to form one or more volume pleats and/or folding at non-expansion state by the described airbag apparatus of above-mentioned each claim (1).

13. by the described airbag apparatus of above-mentioned each claim (1), it is characterized in that, described air bag (2) is arranged in the described seat handrail (3) like this, makes deployment opening this immediate with it outside of seat handrail (3) and/or make described air bag launch on the automobile sidewall dorsad of described volume pleat.

14. by claim 12 or 13 described airbag apparatus (1), it is characterized in that, described partitioning slot (13) is designed to, and when non-expansion state was transformed into swelling state, the flow passage between described first area and described second area was blocked by this partitioning slot (13) at described air bag (2).

15. a method that is used for making by the described airbag apparatus of above-mentioned each claim (1), wherein, described making is characterised in that the following steps of following order:

-contrary first direction (10) at least partial section is rolled and/or folding second chamber (6);

-contrary second direction (11) is rolled and/or folding second chamber (6);

-alternatively with the 3rd chamber (7) along second direction (11) turnup;

-contrary first direction (10) is rolled and/or folding described first chamber (5).