JPH0826062A - Air bag device - Google Patents

Abstract

PURPOSE:To provide a small-sized air bag device free from the necessity of increasing the thickness of the air bag as a whole, as for the air bag device installed on the car body side part. CONSTITUTION:As for an air bag device 27 having an air bag 31 which is installed on a roof side rail 11 and expands and is developed inside the window part of a car body side part by detecting the impact force in the car width direction, a seat (penetration resistive member) 41 for increasing the penetration resistance of the side surface on the window part 17 side of the air bag 31 is installed on the side surface. 31 and a window part 17 and can be shifted to the crossing state with the window part, and a shifting means 37 for shifting the supporting member 35 by detecting the impact force are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air bag having an air bag for supporting and protecting an occupant's head by inflating and expanding inside a window on a side of a vehicle body by detecting an impact force in a vehicle width direction. It relates to a bag device.

[0002]

2. Description of the Related Art FIGS.
The side part of the vehicle in which the airbag apparatus 1 described in Japanese Patent No. 232 is mounted is shown. The airbag device 1 includes an upper airbag device 5 provided on the roof side 3 and a lower airbag device 9 provided on a door 7.

The upper airbag device 5 includes a roof side 3
The inflator 13 provided in the roof side rail 11 of the vehicle is ignited by the detection of the impact force applied to the vehicle body in the vehicle width direction, and gas is flowed into the airbag 15, so that the airbag 15 is provided on the side of the vehicle body. It expands and deploys inside the window 17. In addition, the lower airbag device 9 includes the door 7
The inflator 19 provided inside ignites upon detection of an impact force in the vehicle width direction and causes gas to flow into the airbag 21, whereby the airbag 21 inflates inside the door 7,
expand. As a result, the occupant 23 is configured such that the head portion 23a is supported by the airbag 15 and the chest portion 23b is supported by the airbag 21 so as to be protected.

By the way, when the window glass 25 of the window portion 17 is closed and an impact force in the vehicle width direction is applied due to a side collision or the like, the window glass 25 is damaged and the window portion side of the airbag 15 is closed. Even when the window glass 25 is opened, the sharp edge portion of the collision partner vehicle or object may come into contact with the side surface of the airbag 15 on the window portion side. For this reason, even if the side surface of the airbag 15 on the window side of the airbag 15 comes into contact with the damaged window glass 25 or the sharp edge portion of the vehicle or the other vehicle with which the vehicle collides, a hole is not formed in the airbag 15. The wall thickness had to be thick as a whole.

[0005]

However, if the thickness of the airbag 15 is large, a large driving force is required to inflate and deploy the airbag 15, so that the inflator 13 becomes large. Therefore, there is a problem that the upper airbag device 5 becomes large in size as a whole and projects from the roof side 3 to the inside of the vehicle cabin to narrow the overhead space of the occupant 23 and the occupant 23 feels a feeling of pressure.

Therefore, according to the present invention, in the airbag device provided on the side of the vehicle body, it is not necessary to increase the thickness of the airbag as a whole, and the airbag can be inflated and deployed with a small driving force. To provide an airbag device of

[0007]

In order to achieve the above object, the invention according to claim 1 is provided in a vehicle body side portion, and is expanded and deployed inside a window portion of the vehicle body side portion by detecting an impact force in the vehicle width direction. An airbag device having an airbag is characterized in that a penetration-resistant member for enhancing penetration resistance of this side surface is provided on a side surface of the airbag on the side of the window portion.

The invention according to claim 2 is the invention according to claim 1, characterized in that the penetration resistant member is formed of a sheet in which reinforcing fibers are woven.

According to a third aspect of the present invention, in the first aspect of the invention, the penetration resistant member is formed separately from the airbag, and is attached to a side surface on the window side of the airbag. It has a feature.

The invention according to claim 4 is the invention according to claim 1, wherein a separate penetration-resistant member is provided on the side surface of the airbag on the window side, and the penetration-resistant member and the window of the airbag are provided. A plurality of tubular air chambers are provided between the side surface of the airbag and the side surface of the airbag along the deployment direction of the airbag, and these air chambers communicate with the inside of the airbag, and the air chambers are passed through the air chamber when the airbag is deployed. The gas is then introduced into the airbag.

A fifth aspect of the present invention is the invention according to the first aspect, in which a separate penetration-resistant member is provided on the side surface of the airbag on the window side, and the penetration-resistant member and the window of the airbag are provided. A plurality of tubular air chambers are provided between the side surface on the part side and the inside of the airbag along the deployment direction of the airbag, and when the airbag is deployed, gas is introduced into the air chamber independently of the airbag. It is characterized by inflowing.

[0012]

According to the first aspect of the present invention, even if the window glass damaged by the impact force in the vehicle width direction, for example, the vehicle or the other object of the collision comes into contact with the side surface on the window side of the airbag, the penetration resistant member is provided. As a result, the penetration resistance of the side surface on the window side of the airbag is improved, so that no hole is formed in the airbag. Therefore, since it is not necessary to increase the thickness of the airbag as a whole, the airbag can be inflated and deployed with a small driving force.

According to the second aspect of the present invention, the reinforcing fiber is woven even if the window glass damaged by the impact force in the vehicle width direction or the vehicle or the other object of the collision comes into contact with the side surface of the airbag on the window side. Since the seat is provided on the side surface of the airbag on the side of the window and the penetration resistance of this side surface is enhanced, no hole is formed in the airbag. Therefore, it is not necessary to increase the thickness of the airbag as a whole, and the airbag can be inflated and deployed with a small driving force.

According to the third aspect of the present invention, the penetration resistance member provided separately from the airbag is provided on the side surface on the window portion side of the airbag, so that the penetration resistance on the side surface on the window portion side of the airbag is provided. Even if a window glass damaged by an impact force in the vehicle width direction or an external object comes into contact with the side surface of the airbag on the window side, the hole is not opened in the airbag. Therefore, it is not necessary to thicken the airbag as a whole, so that the airbag can be inflated and deployed with a small driving force.

According to the fourth aspect of the present invention, the penetration resistance member provided separately from the airbag is provided on the side surface of the airbag on the side of the window portion. Even if a window glass damaged by an impact force in the vehicle width direction or an external object comes into contact with the side surface of the airbag on the side of the window portion, a hole is not formed in the airbag.

Further, a plurality of tubular air chambers are provided between the penetration resistant member and the vehicle outer portion of the airbag along the deployment direction of the airbag, and these air chambers communicate with the airbag. Due to this, when the airbag is deployed from the folded state, gas flows into the airbag through the air chamber. As a result, the side surface of the airbag on the window side is deployed first, and the penetration-resistant member is reliably positioned on the side surface of the airbag on the window side, so that the penetration resistance of the side surface on the window side of the airbag is improved. Can be raised.

According to the fifth aspect of the present invention, the penetration resistance member provided separately from the airbag is provided on the side surface of the airbag on the side of the window portion, so that the penetration resistance of the side surface on the side of the window portion of the airbag is improved. Even if a window glass damaged by an impact force in the vehicle width direction or an external object comes into contact with the side surface of the airbag on the window side, the hole is not opened in the airbag.

Further, by providing a plurality of tubular air chambers along the deployment direction of the airbag between the penetration resistant member and the vehicle outer side portion of the airbag, the airbag can be folded from the folded state. When is deployed, gas flows into the air chamber and the airbag, respectively. As a result, the side surface of the airbag on the window side is deployed first, and the penetration-resistant member is reliably positioned on the side surface of the airbag on the window side, so that the penetration resistance of the side surface on the window side of the airbag is improved. Can be raised.

[0019]

Embodiments of the airbag device according to the present invention will be described below.

First Embodiment FIG. 1 shows a side portion of a vehicle equipped with an airbag device of this embodiment, and FIG. 2 shows a side portion of the vehicle as seen from the back of an occupant.

As shown in FIGS. 1 and 2, the air bag device 27 is inflated and deployed inside the window on the side of the vehicle body by the inflator 29 arranged in the roof side rail 11 and the gas generated by the inflator 29. Airbag 3
It consists of 1. As shown in FIG. 3, the airbag 31 includes a window portion side seat 33 located on the window portion 17 side of the vehicle body side portion when inflated and deployed, and an inner seat located on the vehicle inner side opposite to the window portion 17 side. And 35. The seats 33 and 35 are normally folded and housed in the roof side rail 11.

The window side sheet 33 is used for the inflator 2
The intermediate sheet 39 is formed with an opening 37 that fits into the gas ejection port 9 and a sheet 41 located below the intermediate sheet 39. These intermediate sheets 39,
The sheet 41 is joined to the inner sheet 35 so that the inside is hermetically sealed. A normal airbag sheet is used as the inner sheet 35 and the intermediate sheet 39, and the sheet (penetration-resistant member) 41 is formed of a cloth having high penetration resistance in which various reinforcing fibers and the like are woven. The penetration resistance of the side surface of the airbag 31 on the window side is enhanced. That is, the sheet 41 in which various reinforcing fibers are woven has high penetration resistance because it is difficult to cut and holes are not easily opened.

When an impact force in the vehicle width direction is applied to a vehicle equipped with such an air bag device 27 due to, for example, a side collision, the impact force is detected by a detection means (not shown), and the inflator 29 operates. . Inflator 2
When 9 is operated, gas is generated and flows into the airbag 31, and the airbag 31 is inflated to the inside of the window on the side of the vehicle body.
Deploy. As a result, the occupant 23 is protected by the head portion 23a being supported by the airbag 31.

At this time, when the window portion 17 is closed by the window glass 25, the impact force applied to the vehicle body causes the window glass 25 to be closed.
Even if the damaged window glass comes into contact with the window-side seat 41 on the vehicle body side portion of the airbag 31, the airbag 31
Since the side surface on the window portion side of the air bag 31 is formed of a sheet 41 having high penetration resistance in which various reinforcing fibers are woven, the side surface on the window portion side of the airbag 31 is improved in penetration resistance.
There is no hole in 1. Further, when the window portion 17 is opened, even if the seat 41 comes into contact with the sharp edge portion of the collision partner vehicle or the collision partner, the side surface of the airbag 31 on the window portion side has a body penetrability. Since it is raised, the sheet 41 is not perforated.

Therefore, the airbag device 27 of the present embodiment.
Since it is not necessary to increase the thickness of the airbag 31 as a whole, the airbag 31 can be inflated and expanded with a small driving force, a small inflator can be used, and the overall size of the device can be reduced. You can do it. As a result,
Since the airbag device 27 does not project from the inside of the roof side rail 11 to the inside of the vehicle compartment, the overhead space of the occupant 23 is not narrowed and the occupant is not given a feeling of pressure.

Second Embodiment Next, a second embodiment shown in FIGS. 4A and 4B will be described. The airbag apparatus according to the present embodiment is provided with a penetration-resistant sheet 51 provided on the side surface inside the window on the side of the vehicle body.
This is an example in which it is formed as a separate body from No. 3 and is attached to the outer periphery of the side surface of the airbag 43 on the side of the window portion to improve the penetration resistance of the side surface on the side of the window portion of the airbag 43.

As shown in FIGS. 4 (a) and 4 (b), the airbag 43 of this embodiment comprises a window-side seat 45 and an inner seat 47, and the window-side seat 45 includes An opening 49 is formed to fit the gas outlet of the inflator 29. A sheet 51 having high penetration resistance is attached to the outer periphery of the window 45 on the window side, that is, on the side surface on the window side. The sheet 51 is made of, for example, a cloth having high penetration resistance in which various kinds of reinforcing fibers are woven, as shown in the first embodiment.

According to the airbag apparatus of this embodiment, the seat 51 having high penetration resistance is provided on the side surface of the airbag 43 on the window side.
By attaching the, the penetration resistance of the side surface on the window portion side of the airbag 43 is enhanced, and the same operation and effect as those of the first embodiment can be obtained.

Third Embodiment Next, a third embodiment shown in FIGS. 5 and 6 will be described.
The airbag 53 of the airbag apparatus of the present embodiment is provided with a separate sheet 59 having high penetration resistance on the side surface on the window side, and between the seat 59 and the vehicle outer portion of the airbag 53,
A plurality of tubular air chambers 55a, 55b, 55c, 55d are provided along the deployment direction of the air bag 53, and these air chambers 55a, 55b, 55c, 55d are communicated with the air bag 53, and at the time of air bag deployment. Air chambers 55a, 55
Gas is allowed to flow into the airbag 53 via b, 55c, 55d.

That is, as shown in FIG. 5, the airbag 5 is provided outside the intermediate sheet 57 on the window side of the airbag 53.
A sheet 59 having a high penetration resistance, which is formed separately from 3, is attached. Further, the seat 59 and the intermediate seat 57 have four seams 61a, 61b, 61c, 61d along the direction of gas inflow from the inflator 29 into the airbag 53 (the direction of expansion and deployment of the airbag 53).
5 tubular air chambers 55a, 55 sewn by
b, 55c, 55d, 55e are formed. The seams 61a, 61b, 61c, 61d are formed part way along the deployment direction of the airbag 53.
At the end of 3 (the lower end shown in FIG. 6A), the air chamber 55
a, 55b, 55c, 55d, 55e and the airbag 53
A gas passage 63 that communicates with the inside 53a is formed. Further, the sheet 59 having high penetration resistance is provided with an opening portion 65 which is fitted into the gas ejection port of the inflator 29.

Therefore, the gas generated by the inflator 29 flows into the airbag 53 from the gas passage 63 via the air chambers 55a, 55b, 55c, 55d, 55e. At this time, the air chambers 55a, 55b, 55c, 55
Since the insides of d and 55e are smaller than the volume of the inside 53a of the airbag 53, the gas from the inflator 29 is
When first entering the air chambers 55a, 55b, 55c, 55d, 55e, the air chambers 55a, 55b, 55c, 55d, 5d, 5
Deploy from 5e side first. As a result, the seat 59 is first positioned on the side surface of the airbag 53 on the window side, and the airbag 5
The penetration resistance of the side surface on the window portion side of 3 is enhanced.

According to the present embodiment, when the airbag 53 is deployed, the sheet 59 having high penetration resistance is located on the side surface on the window side to enhance the penetration resistance on the side surface on the window side of the airbag 53. Therefore, the same operation and effect as those of the first embodiment can be obtained.

Further, in the airbag 53 of the airbag apparatus of this embodiment, gas flows into the air chambers 55a to 55e first, so that the airbag can be surely and quickly deployed from the folded state to the deployed state. You can

In the above embodiment, the airbag 5
3, the intermediate sheet 57 on the window side and the sheet 5 having high penetration resistance
9 is connected by a strip-shaped sheet to form portions corresponding to the seams 61a to 61d in the above-described embodiment, so that the window-side sheet 57, the sheet 59 having high penetration resistance, and the strip-shaped sheet are formed. Even if a plurality of tubular air chambers are formed with the sheet, the same effect as above can be obtained.

Fourth Embodiment Next, a fourth embodiment shown in FIGS. 7 to 11 will be described. As shown in FIG. 7 and FIG. 8A, the airbag 67 of the airbag apparatus of this embodiment is provided with a separate sheet 71 having high penetration resistance on the side surface on the side of the window portion. As shown in FIG. 9, a plurality of tubular air chambers 69a, 69b, 69c are provided between the side surface of the bag 67 on the window side and along the deployment direction of the airbag 67.
The gas is allowed to flow into the air chambers 69a, 69b, 69c independently of the air bag 67 at the time of deployment.

That is, as shown in FIG. 10, in the airbag 67, a separate sheet 71 having high penetration resistance is attached to the inflator 29 integrally with the airbag 67. A rectangular frame-shaped mounting plate 73 is fixed to the gas outlet side of the inflator 29. The mounting plate 73 has an opening 71a of the sheet 71 having high penetration resistance.
Are attached by a back plate 75 (see FIG. 11). Further, an edge portion of the opening 77a of the intermediate seat 77 outside the vehicle of the airbag 67 is attached to the back plate 75 by a back plate 79 (see FIG. 11).

As shown in FIG. 7, the seat 71 and the intermediate seat 77 of the airbag 67 have seams 81a and 81a.
The air bag 67 is sewn halfway along the deployment direction of the airbag 67 to form three air chambers 69a, 69b, 69c between the seat 71 and the intermediate seat 77. These three air chambers 69a, 69b, 69c are shown in FIG.
In (a), they are communicated by the gas passage 76 at the lower end. Further, in the airbag 67, an air chamber 81 is formed between the intermediate seat 77 and the inner seat 83. The air chamber 81 includes the three air chambers 69a and 69a.
The inflator 2 is formed independently of the b and 69c.
Gas is introduced into the interior through an opening 77a that is fitted to the gas ejection port 9 of FIG. Also, the three air chambers 69a, 69
Air chambers 69a, 69 located on both sides of b, 69c
The gas is introduced into c, and the air chamber 69b in the middle is filled with the gas through the gas passage 76.

When an impact force in the vehicle width direction is applied to a vehicle equipped with such an air bag device due to, for example, a side collision, a detection means (not shown) detects this impact force and the inflator 29 operates to generate gas. To do. This gas is introduced into the air chambers 69a and 69c through the opening 71a and the opening 77.
The air chamber 81 is filled from a. In this case, the air chamber 6
9a and 69c have a thin tubular shape compared to the entire airbag 67 and have a smaller volume than the air chamber 81, so that the air chambers 69a and 69c are quickly filled with gas. For this reason, the portion of the seat 71 located on the side surface on the side of the window portion is first deployed, so that the airbag 67 can be reliably and quickly deployed in the deployed state, and the side surface on the side of the window portion is resistant to penetration. The high seat 71 is located. As a result, the penetration resistance of the side surface of the airbag 67 on the side of the window portion is enhanced, and the same action and effect as those of the above-described respective embodiments can be obtained.

Further, according to this embodiment, the air chamber 69
Even if a, 69b, and 69c are damaged by a damaged window glass, a collision partner vehicle, or an object, the air chamber 81 is independent of the air chambers 69a, 69b, and 69c. Does not extend.

In the above embodiment, the airbag 6 is used.
The intermediate sheet 77 of No. 7 and the sheet 71 having high penetration resistance are connected by a strip-shaped sheet to form the portions corresponding to the seams 81a and 81b of the above-described embodiment, thereby forming the intermediate portion of the airbag 67. Even if a plurality of tubular air chambers are formed by the sheet 77, the sheet 71 having high penetration resistance, and the strip-shaped sheet, the same effect as described above can be obtained.

In each of the above embodiments, the roof side 3
An example in which the present invention is applied to an airbag device that is attached to the inside of a window portion and inflates and deploys to the inside of the window portion is shown. Alternatively, the present invention can be applied to an airbag device that is attached to the A pillar, the B pillar, and the C pillar and that is deployed in the vehicle front-rear direction and the rear inside the window portion.

Further, in each of the above-mentioned embodiments, an example in which a cloth or sheet having a high penetration resistance is used as the penetration resistance member is shown, but the invention is not limited to this, and various protective members such as a plate material and a wire mesh. Can be used.

[0043]

As described above, according to the first aspect of the present invention, a penetration-resistant member for enhancing penetration resistance of the side surface is provided on the side surface of the airbag on the side of the window portion. It is not necessary to increase the overall thickness, and the airbag can be inflated and deployed with a small driving force. Therefore, since the airbag device can be made compact, the airbag device does not project from the vehicle side portion to the vehicle interior side, and the overhead space of the occupant is not narrowed. As a result, the occupant does not feel pressure.

According to the second aspect of the present invention, by forming the penetration resistant member with a sheet in which reinforced fibers are woven, it is possible to enhance the penetration resistance of the side surface on the window side of the airbag, and There is no need to increase the overall wall thickness.
As a result, the airbag can be inflated and deployed with a small driving force, and the airbag device can be downsized, so that the airbag device does not overhang from the vehicle side portion to the passenger compartment side. Does not narrow the overhead space of. As a result, the occupant does not feel pressure.

According to the third aspect of the present invention, the penetration resistance of the side surface of the airbag on the side of the window portion can be enhanced by mounting the separate penetration resistance member on the side surface of the airbag on the window portion side. . Therefore, since it is not necessary to increase the thickness of the airbag as a whole, the airbag can be deployed with a small driving force, and the airbag device can be downsized.

According to the fourth aspect of the present invention, the penetration resistance member provided separately from the airbag is provided on the side surface of the airbag on the side of the window portion, so that the penetration resistance of the side surface on the side of the window portion of the airbag is improved. Can be increased. Therefore, since it is not necessary to increase the thickness of the airbag as a whole, the airbag can be inflated and deployed with a small driving force, and the airbag device can be downsized.

Further, a plurality of tubular air chambers are provided between the penetration resistant member and the vehicle outer portion of the airbag along the direction of deployment of the airbag, and these air chambers communicate with the airbag. By doing so, when the airbag is deployed from the folded state, gas flows into the airbag through the air chamber, so that the airbag can be reliably and quickly deployed.

According to the fifth aspect of the present invention, the penetration-resistant member, which is separate from the airbag, is provided on the side surface of the airbag on the side of the window portion. It is possible to improve the sex. Therefore, since it is not necessary to increase the thickness of the airbag as a whole, the airbag can be inflated and deployed with a small driving force, and the airbag device can be downsized.

In addition, a separate penetration-resistant member is provided on the side surface of the airbag on the side of the window portion, and between the penetration-resistant member and the side surface on the side of the airbag window portion is independent of the interior of the airbag. Since a plurality of tubular air chambers are provided along the deployment direction of the airbag, and gas is introduced into the airbag chamber independently of the airbag when the airbag is deployed, the airbag can be reliably and quickly deployed. I can.

[Brief description of drawings]

FIG. 1 is a side view showing a side portion of a vehicle equipped with an airbag device according to a first embodiment of the present invention.

FIG. 2 is a rear view of a side portion of a vehicle equipped with the airbag apparatus according to the first embodiment as viewed from a passenger's back side.

3A and 3B show an airbag of the airbag device of the first embodiment, wherein FIG. 3A is a perspective view and FIG. 3B is a sectional view.

FIG. 4 shows an airbag of an airbag device according to a second embodiment of the present invention, (a) is a perspective view and (b) is a sectional view.

FIG. 5 is a perspective view showing an airbag of an airbag device according to a third embodiment of the present invention.

6 shows an airbag of an airbag device of a third embodiment, (a) is a cross-sectional view taken along line VIa-VIa in FIG. 5, and (b) is taken along line VIb-VIb in FIG. It is sectional drawing cut | disconnected by.

FIG. 7 is a perspective view showing an airbag of an airbag device according to a fourth exemplary embodiment of the present invention.

8 shows an airbag of an airbag device according to a fourth embodiment, (a) is a cross-sectional view taken along line VIIIa-VIIIa in FIG. 7, and (b) is VIIIb-VIII in FIG.
It is sectional drawing cut | disconnected along the b line.

FIG. 9 is a cross-sectional view showing an airbag of an airbag device of a fourth embodiment, taken along line IX-IX in FIG. 7.

FIG. 10 is a cross-sectional view showing an airbag device of a fourth embodiment, taken along line XX in FIG. 7.

FIG. 11 is a perspective view showing a back plate for fixing the airbag of the fourth embodiment to the inflator.

FIG. 12 is a side view showing a side portion of a vehicle equipped with a conventional airbag device.

FIG. 13 is a rear view of a side portion of a vehicle equipped with a conventional airbag device as viewed from a back side of an occupant.

[Explanation of symbols]

 11 Roof side rail 17 Window part 27 Air bag device 31, 43, 53, 67 Air bag 41, 51, 59, 71 Seat (penetration resistant member) 53a Air chamber 55a, 55b, 55c, 55d, 55e Air chamber 69a, 69b, 69c Air chamber

Claims (5)

[Claims] 1. An airbag device having an airbag which is provided on a side portion of a vehicle body and inflates and deploys inside a window portion on the side portion of the vehicle body by detecting an impact force in a vehicle width direction. An airbag device, wherein a side face is provided with a penetration resistant member for enhancing the penetration resistance of the side face. 2. The airbag device according to claim 1, wherein the penetration resistant member is formed of a sheet in which reinforcing fibers are woven. 3. The airbag device according to claim 1, wherein the penetration-resistant member is formed separately from an airbag, and is attached to a side surface of the airbag on a window side. . 4. The invention according to claim 1, wherein a separate penetration-resistant member is provided on the side surface of the airbag on the side of the window portion, and the penetration-resistant member and the side surface on the side of the window portion of the airbag are provided. In between, a plurality of tubular air chambers are provided along the direction of deployment of the air bag, and these air chambers and the interior of the air bag are communicated with each other. An air bag device characterized by allowing air to flow in. 5. The invention according to claim 1, wherein a separate penetration-resistant member is provided on the side surface of the airbag on the side of the window, and the penetration-resistant member and the side surface of the airbag on the side of the window are provided. In between, a plurality of tubular air chambers are provided independently of the inside of the airbag along the deployment direction of the airbag, and gas is introduced into the air chamber independently of the airbag when the airbag is deployed. Air bag device.