KR102530935B1 - Airbag apparatus for vehicle - Google Patents

Abstract

In the present invention, when the cushion unit is deployed, the cushion unit is accurately deployed to a predetermined position as the guide unit guides the deployment of the cushion unit. In particular, when the cushion unit is deployed, bending of the guide unit by an impact is prevented, so that the cushion unit is rapidly and accurately inflated. As a result, an airbag device for a vehicle in which the protection performance of the occupant is increased and the durability performance is also secured is introduced.

Description

Vehicle airbag device {AIRBAG APPARATUS FOR VEHICLE}

The present invention relates to an airbag device for a vehicle that safely protects an occupant.

Vehicles are being developed with technologies for ensuring the safety of occupants as well as driving performance, convenience, and functionality.

In particular, airbags are being applied as the most efficient means for protecting occupants from impact among various safety devices applied to vehicles.

The airbag is a means of protecting the driver and occupants in a vehicle collision, and is composed of a collision sensor that detects a vehicle collision, a controller that operates the airbag according to the detection result of the collision sensor, and an airbag module that operates the airbag according to a signal from the controller. , depending on the installation location or protection target, they are classified into driver's airbags, cockpit airbags, side airbags, and roof airbags.

In particular, in the case of a vehicle having a panoramic roof structure, a roof airbag is applied to prevent passengers from escaping to a portion where the panorama is formed in the event of a vehicle accident. However, in the case of a vehicle having a panoramic roof structure, the part where the panorama is formed is easily damaged, and accordingly, the airbag is not smoothly deployed due to the roof damage, resulting in aggravated injury to the occupant or causing the occupant to escape to the outside.

The matters described as the background art above are only for improving understanding of the background of the present invention, and should not be taken as an admission that they correspond to prior art already known to those skilled in the art.

KR 10-2016-0027706 A (2016.03.10)

The present invention has been proposed to solve these problems, and to provide an airbag device for a vehicle that guides the deployment of the airbag when deploying the airbag and prevents the airbag deployment from being hindered by damage to parts caused by an impact generated during the deployment of the airbag. It has a purpose.

An airbag device for a vehicle according to the present invention for achieving the above object includes a cushion unit that is deployed forward by gas supplied from an inflator; one or more guide parts extending along the expansion direction of the cushion part and guiding the expansion of the cushion part; and a support part disposed to be spaced apart from the side of the guide part and supporting the guide part when the cushion part is deployed.

The support part is installed on the vehicle body, and is positioned between the cushion part and the guide part, and is characterized in that it is disposed to be spaced apart from the guide part in the lateral direction.

It is characterized in that the cushion part is provided with a plurality of connecting parts that are movably connected to the guide part.

The support unit is installed to be able to change its position, and is connected to the cushion unit and the support unit to change the position of the support unit so that the support unit comes into contact with the guide unit when the cushion unit is deployed.

The wire part is characterized in that one end is connected to the side end of the cushion part, and the other end extends to the rear of the guide part and is connected to the support part at the opposite side of the guide part after the direction is changed.

It is characterized in that it is further included; a first direction changing unit disposed at the rear of the guide unit and engaging the wire unit connected to the cushion unit and the support unit so that the direction of the wire unit is changed.

A second direction shifting unit arranged on the opposite side of the support unit with respect to the guide unit, the wire unit being hooked and connected to the support unit so that the wire unit connected to the support unit is connected in a straight line in the lateral direction; characterized in that it is further included.

The first direction change unit and the second direction change unit are rollers configured to be rotatable, and the wire unit is wound around the first direction change unit and the second direction change unit.

The support part is characterized in that one end is rotatably installed on the vehicle body and the wire part is connected to the other end, so that when the cushion part is deployed, it is rotated by the pulling force of the wire part and comes into contact with the guide part.

An elastic spring installed in the vehicle body is connected to the support part, and the elastic spring is configured to provide elastic force in a direction in which the support part contacts the guide part.

The support part is installed to be slidable in the lateral direction of the vehicle body, and when the cushion part is deployed, it is moved in the lateral direction by the pulling force of the wire part and comes into contact with the guide part.

The support unit is connected to a circular spring installed in the vehicle body, and the circular spring is configured to provide elastic force in a direction in which the support unit contacts the guide unit.

A roof airbag installed so that the guide part extends in the forward and backward direction from the vehicle roof, and the cushion part has both ends connected to the pair of guide parts, and is installed to be deployed along the extension direction of the guide part by the gas supplied from the inflator. It is characterized by being

The cushion unit is formed to have a plurality of chambers divided in the lateral direction, the inflator is provided with a gas path connected to the cushion unit, and the gas path is connected to supply gas to chambers disposed at both ends of the plurality of chambers of the cushion unit. characterized by

In the airbag device of a vehicle configured as described above, when the cushion unit is deployed, the cushion unit is accurately deployed to a predetermined position as the guide unit guides the deployment of the cushion unit. In particular, when the cushion unit is deployed, the guide unit is prevented from being bent by an impact, so that the cushion unit is rapidly and accurately inflated. As a result, the protection performance of the occupant is increased, and the durability performance is also secured.

1 and 2 are diagrams illustrating an airbag device for a vehicle according to an embodiment of the present invention.
3 to 7 are diagrams for explaining an airbag device of the vehicle shown in FIG. 1;

Hereinafter, an airbag device for a vehicle according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

1 and 2 are views showing an airbag device for a vehicle according to an embodiment of the present invention, and FIGS. 3 to 7 are views for explaining the airbag device for a vehicle shown in FIG. 1 . In the description according to the present invention, the direction in which the cushion unit is deployed is referred to as the front, and the front may be set in various directions according to the deployment direction of the airbag.

As shown in FIGS. 1 and 2 , an airbag device for a vehicle according to the present invention includes a cushion unit 10 that is deployed forward by gas supplied from an inflator 80; one or more guide parts 20 extending along the expansion direction of the cushion unit 10 to guide the deployment of the cushion unit 10; and a support part 30 disposed to be spaced apart from the side of the guide part 20 and supporting the guide part 20 when the cushion part 10 is deployed.

As described above, the present invention is composed of the cushion part 10, the guide part 20, and the support part 30, and the cushion part 10 receives the gas supplied from the inflator 80 and is deployed. By being guided and deployed in the extension direction, it can be quickly and accurately deployed to a predetermined position.

Here, the cushion part 10 may be provided with a plurality of connecting parts 12 that are movably engaged and connected to the guide part 20 . That is, in the cushion part 10, a plurality of connecting parts 12 are disposed spaced apart from each other in the front-rear direction and connected to the guide part 20 through the connecting part 12. The connecting portion 12 for this purpose is formed in a ring shape, and the guide portion 20 is formed in a rod shape so that the rod-shaped guide portion 20 penetrates between the ring-shaped connecting portions 12 so that the connecting portion 12 is guided. It can be movably connected in the unit 20.

In particular, in the present invention, the support part 30 is provided in the lateral direction of the guide part 20, so that the guide part 20 is excessively bent by the force of contraction of the cushion part 10 when the cushion part 10 is deployed. limit That is, when the cushion unit 10 is deployed, it is inflated by receiving gas from the inflator 80. As the contraction force is applied to the inside of the cushion unit 10, the guide unit 20 to which the cushion unit 10 is connected is moved by the contraction force. A problem of bending toward the cushion part 10 may occur. In order to solve this problem, the present invention provides the support part 30 adjacent to the guide part 20 so that the guide part 20 is supported when the bending of the guide part 20 occurs due to the expansion of the cushion part 10 ( 30), excessive bending is suppressed. In addition, since the support part 30 is spaced apart from the guide part 20, it does not interfere with the expansion of the initial cushion part 10, and is bent by the guide part 20 due to the contraction force caused by the expansion of the cushion part 10. When generated, it comes into contact with the guide part 20 to prevent the guide part 20 from being excessively bent.

As such, in the present invention, the cushion unit 10 is quickly and accurately deployed to a position determined by the guide unit 20, and the support unit 20 is bent when the guide unit 20 is bent by contraction force generated when the cushion unit 10 is deployed. Since the guide part 20 is supported by the 30, excessive bending of the guide part 20 is suppressed.

Describing the present invention in detail, the support part 301 may be installed on the vehicle body, positioned between the cushion part 10 and the guide part 20, and spaced apart from the guide part 20 laterally.

As can be seen in FIG. 2 , when the cushion unit 10 is inflated, contraction force is applied toward the center, and the guide unit 20 is forced toward the cushion unit 10 by the contraction force of the cushion unit 10 . Therefore, the support part 301 is located between the cushion part 10 and the guide part 20 and is installed on the vehicle body, thereby suppressing the bending of the guide part 20 towards the cushion part 10.

In addition, the support part 301 is arranged to be spaced apart from the guide part 20 in the side. In the present invention, the cushion part 10 is deployed along the guide part 20, and when the support part 301 is in contact with the guide part 20 before the cushion part 10 is deployed, the cushion part 10 is the support part ( 301) may interfere with deployment. Therefore, the support part 301 is arranged to be spaced apart from the guide part 20 so that the cushion part 10 is smoothly developed along the guide part 20, but as the cushion part 10 is deployed, the guide part 20 is bent. In this case, the support part 301 supports the guide part 20 so that the bending of the guide part 20 is suppressed.

As the first embodiment, the support part 301 is configured in a form in which the support part is fixed to the vehicle body and the position thereof is not changed.

On the other hand, the support part 30 is installed to be able to change the position, and is connected to the cushion part 10 and the support part 30 so that the support part 30 contacts the guide part 20 when the cushion part 10 is deployed. A wire unit 40 to change; may further include.

In this way, the support part 30 is provided between the cushion part 10 and the guide part 20, but is installed to be able to change the position, and is connected to the cushion part 10 through the wire part 40, so that the cushion part 10 As the pulling force is applied to the support part 30 through the wire part 40 during deployment, the position of the support part 30 is changed so that the support part 30 comes into contact with the guide part 20 .

That is, the initial position of the support part 30 is maintained at a distance from the guide part 20, and the position of the support part 30 is changed by the wire part 40 when the cushion part 10 is deployed, so that the support part 30 ) is in contact with the guide portion 20 to suppress the bending of the guide portion 20.

One end of the wire part 40 for this purpose is connected to the side end of the cushion part 10, and the other end extends to the rear of the guide part 20, and after the direction is changed, the support part 30 on the opposite side of the guide part 20 can be connected to

As can be seen in FIG. 1 , the wire part 40 is connected to the cushion part 10 and the support part 30, and when the wire part 40 is deployed, the support part 30 is interlocked and operated. That is, the cushion part 10 is deployed forward from the rear position, and the support part 30 is located in the central part of the guide part 20 to prevent the bending of the guide part 20, the wire part 40 ) is simply connected to the cushion part 10 and the support part 30, even if the cushion part 10 is deployed, pulling force for operating the support part 30 is not provided. If the wire part 40 is interlocked with the expansion of the cushion part 10 so that the support part 30 is operated, the cushion part is set at a distance longer than the distance between the initial position of the cushion part 10 and the position of the support part 30. Although the movement of (10) has to be performed, it is difficult to secure the deployment length of the cushion part (10).

Therefore, one end of the wire part 40 is connected to the side end of the cushion part 10, and the other end extends to the rear of the guide part 20, and then crosses forward again from the opposite side of the guide part 20 to the guide part ( 20) is connected to the support part 30, so that when the cushion part 10 is deployed, one end of the wire part 40 moves forward and the other end of the wire part 40 moves backward. ) is interlocked with the deployment so that the position change operation of the support part 30 is performed.

In detail, the first direction changing unit for changing the direction of the wire unit 40 by hooking and connecting the wire unit 40 disposed at the rear of the guide unit 20 and connected to the cushion unit 10 and the support unit 30. (51); may be further included.

In addition, the guide part 20 is disposed on the opposite side of the support part 30 as the center, and the wire part 40 connected to the support part 30 by hooking the wire part 40 is connected in a straight line with respect to the lateral direction. A second direction changing unit 52 to be; may be further included.

As shown in FIG. 2, a first direction changing unit 51 is provided at the rear of the guide unit 20, and a second direction changing unit 52 is provided on the opposite side of the support unit 30 around the guide unit 20. ) is provided so that the pulling force of the wire part 40 generated as the cushion part 10 is deployed can act in the direction in which the support part 30 comes into contact with the guide part 20 . That is, in a state in which one end of the wire part 40 is connected to the cushion part 10, the wire part 40 extends backward and is wound around the first direction changing part 51 disposed behind the guide part 20. ) is turned forward. In addition, the other end of the wire part 40 is changed in direction to the cushion part 10 side again by the second direction changing part 52 and connected to the support part 30, so that the other end of the wire part 40 and the support part 30 are connected vertically in the lateral direction.

Due to this, as the cushion unit 10 is deployed forward when the cushion unit 10 is deployed, one end of the wire unit 40 is pulled forward, and the other end of the wire unit 40 is the first direction changing unit 51 The direction is changed by ) and moved backward, but as the pulling force is applied so that the support part 30 is directed toward the guide part 20 by the second direction changing part 52, the support part 30 finally guides the guide part ( 20) can be performed.

The above-described first direction change unit 51 and the second direction change unit 52 are rollers configured to be rotatable, and the wire unit 40 is the first direction change unit 51 and the second direction change unit 52 can be wound on

In this way, in a state where the first direction change unit 51 and the second direction change unit 52 are composed of rollers, the wire unit 40 is connected to the first direction change unit 51 and the second direction change unit 52. As it is configured to be wound, the wire unit 40 remains hooked to the first direction change unit 51 and the second direction change unit 52, and when the wire unit 40 moves, the first direction change unit 51 ) and the second direction changing unit 52 are rotated so that the wire unit 40 can move smoothly.

Hereinafter, various embodiments of the support part 30 will be described.

As a second embodiment of the support part 30, as shown in FIGS. 4 and 5, the support part 302 has one end rotatably installed on the vehicle body and the other end connected to the wire part 40 so that the cushion part 10 ) can be rotated by the pulling force of the wire part 40 and contacted with the guide part 20 during deployment. Here, the installation position where the support part 302 of FIG. 4 is rotated and the installation position where the support part 302 of FIG. 20), the rotational position is marked differently on the drawing.

In this way, the support part 302 may be rotatably installed on the vehicle body and rotated by the wire part 40 to come into contact with the guide part 20 . That is, even if the connection part 12 of the cushion part 10 moves along the guide part 20 as the non-contact state with the guide part 20 is maintained in the initial non-rotational state of the support part 302, the connection part 12 and The support part 302 does not interfere and the connection part 12 moves smoothly. Here, when the cushion part 10 is deployed a predetermined distance along the guide part 20, tension is generated in the wire part 40, and when the pulling force of the wire part 40 acts on the support part 302, the support part 302 is rotated in the pulling direction of the wire part 40 to come into contact with the guide part 20 .

In this way, the support part 302 is rotatably installed on the vehicle body, and does not interfere with the smooth deployment of the cushion part 10 by being in contact with the guide part 20 during rotation as it is pulled by the wire part 40, When the cushion part 10 is deployed, the support part 302 comes into contact with the guide part 20 to prevent the guide part 20 from being bent by the contraction force of the cushion part 10 . Here, the rotational operation timing of the support part 302 depends on the installation position of the support part 302, the position of the wire part 40 connected to the cushion part 10, and the length of the wire part 40. When the deployment is completed, the support part 302 may come into contact with the guide part 20 .

Meanwhile, an elastic spring 60 installed in a vehicle body may be connected to the support part 302 , and the elastic spring 60 may be configured to provide elastic force in a direction in which the support part 302 contacts the guide part 20 . In this way, as the elastic spring 60 is connected to the support part 302 , the support part 302 can be kept in contact with the guide part 20 . Here, in the case of the support part 302, the cushion part 10 is configured to rotate only backward when the cushion part 10 is deployed, so that the cushion part 10 is allowed to unfold in the extension direction of the guide part 20, but the support part 302 is the guide part ( 20 ) may be restored so that the cushion unit 10 is not restored to a state before deployment.

That is, when the cushion unit 10 is deployed, the connection unit 12 moves along the guide unit 20 and rotates the support unit 302 so that the cushion unit 10 is smoothly deployed. However, as the support part 302 is returned to its original position by the elastic spring 60 in the rearward direction opposite to the direction in which the cushion part 10 is deployed, and comes into contact with the guide part 20, the cushion part 10 is deployed. It is restricted to return to the original position again in the broken state. In addition, when the deployment of the cushion part 10 is completed, the elastic spring 60 together with the wire part 40 transfers force in the direction in which the support part 302 comes into contact with the guide part 20, so that the support part 302 The state in which the guide unit 20 is supported can be firmly maintained.

On the other hand, as a third embodiment of the support part 30, as shown in FIGS. 6 and 7, the support part 303 is slidably installed on the vehicle body in the lateral direction, and when the cushion part 10 is deployed, the wire part ( 40) may be moved in the lateral direction by the pulling force and come into contact with the guide part 20.

In this way, the support part 303 may be slidably installed on the vehicle body, slide by the wire part 40, and come into contact with the guide part 20. Here, even if the connection part 12 of the cushion part 10 is moved along the guide part 20 as the initial position of the support part 303 is maintained in a non-contact state with the guide part 20, the connection part 12 and the support part ( 303) does not interfere, and the connection part 12 moves smoothly. Here, when the cushion part 10 is deployed a predetermined distance along the guide part 20, tension is generated in the wire part 40, and when the pulling force of the wire part 40 acts on the support part 303, the support part 303 is slid in the pulling direction of the wire part 40 and comes into contact with the guide part 20 .

In this way, the support part 303 is slidably installed on the vehicle body, and does not interfere with the smooth deployment of the cushion part 10 by being in contact with the guide part 20 during sliding movement as it is pulled by the wire part 40, When the cushion part 10 is deployed, the support part 303 moves by the pulling force of the wire part 40 and contacts the guide part 20, so that the guide part 20 is bent by the contraction force of the cushion part 10. is prevented Here, the timing of the sliding movement of the support part 303 depends on the installation position of the support part, the position of the wire part 40 connected to the cushion part 10, and the length of the wire part 40 when the cushion part 10 is fully deployed. When the support portion 303 is in contact with the guide portion 20 can be.

Meanwhile, the support part 303 is connected to the original spring 70 installed in the vehicle body, and the original spring 70 may provide elastic force so that the support part 303 does not come into contact with the guide part 20 .

In this way, as the reversing spring 70 is connected to the support part 303 , the support part 303 may maintain a state in contact with the guide part 20 . Here, for the sliding operation of the support part 303, a separate rail structure should be applied to the vehicle body.

That is, when the connection part 12 is moved along the guide part 20 when the cushion part 10 is deployed, the support part 303 is maintained in a non-contact state with the guide part 20 by the reciprocal spring 70. Accordingly, the cushion unit 10 can be smoothly deployed without interfering with the support unit 303 . In this state, as the pulling force of the wire part 40 is applied to the support part 303 at the time when the deployment of the cushion part 10 is completed, the support part 303 overcomes the elastic force of the original spring 70 and supports the support part 303. ) is slidingly moved to come into contact with the guide part 20.

In this way, the cushion part 10 moves quickly and accurately along the guide part 20, and the support part 303 moves along the guide part 20 by the pulling force of the wire part 40 in a state in which the cushion part 10 is deployed. ) By contacting the guide portion 20 is prevented from being bent by the contraction force of the cushion portion 10 .

On the other hand, as shown in Figures 2 and 8, the guide portion 20 is composed of a pair disposed to extend in the front and rear directions in the vehicle roof, the cushion portion 10 has both ends of a pair of guide portions ( 20), and may be a roof airbag installed to be deployed along the extending direction of the guide unit 20 by gas supplied from the inflator 80.

In this way, the guide part 20 is composed of a pair and is installed to extend in the front and rear directions from the vehicle roof, and the cushion part 10 is composed of a roof airbag and both ends may be connected to the guide part 20 . At this time, the inflator 80 is connected to the rear side of the cushion unit 10 so that the cushion unit 10 can be deployed forward when the inflator 80 is fired.

In particular, the cushion unit 10 is formed to have a plurality of chambers divided in the lateral direction, and the inflator 80 is provided with a gas path 82 connected to the cushion unit 10, and the gas path 82 is Among the plurality of chambers of the cushion unit 10 , gas may be supplied to chambers disposed at both ends of the cushion unit 10 .

As such, the cushion part 10 is formed to have a plurality of chambers, and the gas supplied from the inflator 80 is moved to the chambers disposed at both ends of the plurality of chambers, thereby reducing the contraction rate generated when the cushion part 10 is inflated. can be reduced, and the deployment speed can be secured. As the plurality of chambers 10 communicate with each other at the front end of the cushion unit 10, the chambers at both ends of the cushion unit 10 are rapidly expanded so that the cushion unit 10 can be quickly deployed to a predetermined position, and after the chambers on both sides are deployed, the center side The chamber is deployed to allow the airbag contraction force to be reduced. To this end, the gas path of the inflator 80 may be extended to be connected to both ends of the plurality of chambers constituting the cushion unit 10 of the cushion unit 10 .

The airbag device according to the present invention can be applied not only to a roof airbag but also to a curtain airbag as shown in FIG. 9 and to a headrest cushion as shown in FIG. 10 . As such, the cushion part 10, the guide part 20, and the support part 30 can be applied to various airbag structures.

In the vehicle airbag device configured as described above, when the cushion unit 10 is deployed, the cushion unit 10 is accurately deployed to a predetermined position as the guide unit 20 guides the deployment of the cushion unit 10 . In particular, when the cushion unit 10 is deployed, the guide unit 20 is prevented from being bent by an impact, so that the cushion unit 10 is rapidly and accurately inflated. As a result, the protection performance of the occupant is increased, and the durability performance is also secured.

Although the present invention has been shown and described in relation to specific embodiments, it is known in the art that the present invention can be variously improved and changed without departing from the technical spirit of the present invention provided by the claims below. It will be self-evident to those skilled in the art.

10: cushion part 12: connection part
20: guide part 30: support part
40: wire unit 51: first direction conversion unit
52: second direction conversion unit 60: elastic spring
70: original spring 80: inflator
82: gas path

Claims (14)

a cushion unit that is deployed forward by the gas supplied from the inflator;
one or more guide parts extending along the expansion direction of the cushion part and guiding the expansion of the cushion part;
a support unit that is spaced apart from the side of the guide unit and installed to enable position change, and supports the guide unit when the cushion unit is deployed; and
An airbag device for a vehicle comprising: a wire part connected to the cushion part and the support part and changing the position of the support part to come into contact with the guide part when the cushion part is deployed. The method of claim 1,
An airbag device for a vehicle, characterized in that the support part is installed on the vehicle body and is positioned between the cushion part and the guide part and spaced apart from the guide part laterally. The method of claim 1,
An airbag device for a vehicle, characterized in that the cushion part is provided with a plurality of connecting parts that are movably hooked to the guide part. delete The method of claim 1,
An airbag device for a vehicle, characterized in that one end of the wire part is connected to the side end of the cushion part, and the other end extends to the rear of the guide part and is connected to the support part at the opposite side of the guide part after the direction is changed. The method of claim 1,
An airbag device for a vehicle, characterized in that it further comprises a first direction shifting unit that is disposed behind the guide unit and engages a wire unit connected to the cushion unit and the support unit to change the direction of the wire unit. The method of claim 6,
A second direction changing unit disposed on the opposite side of the support unit with the guide unit as the center, and engaging the wire unit so that the wire unit connected to the support unit is connected in a straight line in the lateral direction. . The method of claim 7,
An airbag device for a vehicle, characterized in that the first direction shifting part and the second direction shifting part are rollers configured to be rotatable, and the wire part is wound around the first direction changing part and the second direction changing part. The method of claim 1,
An airbag device for a vehicle, characterized in that one end of the support part is rotatably installed on the vehicle body and the wire part is connected to the other end so that when the cushion part is deployed, it is rotated by the pulling force of the wire part and comes into contact with the guide part. The method of claim 9,
An airbag device for a vehicle, characterized in that an elastic spring installed in a vehicle body is connected to the support part, and the elastic spring is configured to provide an elastic force in a direction in which the support part contacts the guide part. The method of claim 1,
The airbag device for a vehicle, characterized in that the support part is slidably installed in the lateral direction of the vehicle body, and when the cushion part is deployed, it is moved in the lateral direction by the pulling force of the wire part and comes into contact with the guide part. The method of claim 11,
An airbag device for a vehicle, characterized in that the support unit is connected to a return spring installed in a vehicle body, and the return spring is configured to provide elastic force so that the support unit does not come into contact with the guide unit. The method of claim 1,
The guide part is composed of a pair disposed to extend in the front and rear directions from the vehicle roof,
An airbag device for a vehicle, characterized in that the cushion part is a roof airbag installed to be deployed along the extending direction of the guide part by gas supplied from an inflator, both ends of which are connected to the pair of guide parts. The method of claim 13,
The cushion part is formed to have a plurality of chambers divided in the lateral direction,
An airbag device for a vehicle, characterized in that the inflator has a gas path connected to the cushion unit, and the gas path is connected to supply gas to chambers disposed at both ends of a plurality of chambers of the cushion unit.

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