JPH06286542A - Mounting structure of air bag device - Google Patents

Abstract

PURPOSE:To facilitate mounting work of an air bag device by mounting the air bag device on a car body side member by a bolt. CONSTITUTION:A bolt 60 mounted on an inflator 58 is slightly longer than a conventional bolt, and the inflator 58 and an air bag device 10A having the inflator 58 are fixed to a car body side member 62 by utilizing the bolt 60. Since a front bracket, a rear bracket and the car body side member are omitted in the mounting structure of the air bag device, the on-vehicle weight of the air bag device 10A can be reduced. Since the number of mounting points (screw stopping points) is small, mounting work is facilitated. By reducing the number of brackets and by completely omitting the bracket, the mounting work of the air bag device can be facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air bag device installation structure, and more particularly to a structure suitable for mounting a passenger seat air bag device to a vehicle body side member.

[0002]

2. Description of the Related Art A conventional air bag device installation structure will be described with reference to FIGS. 3 is a longitudinal sectional view showing the installation structure of the airbag device, and FIG. 4 is a perspective view of the inflator. This conventional example relates to an installation structure of a passenger airbag device.

The passenger seat airbag device 10 has a structure in which an airbag 14 is inserted into a container 12 and a front opening of the container 12 is covered with a lid 16. An inflator 18 for deploying the airbag 14 is attached to the rear portion of the container 12.

In this conventional example, the container 12 is composed of a container upper 20, a container lower 22, and an inflator cover 24. Container lower 2
2 is a semicircular recess 22 with which the inflator 18 is engaged.
a is provided, and the inflator 1 is provided in the recess 22a.
About half of eight are engaged. The rear portion of the inflator 18 is covered with the inflator cover 24, and the inflator cover 24 is fixed to the container lower 22 by bolts 26. The container lower 22 is fixed to the container upper 20 by rivets 28.

As shown in FIG. 4, the inflator 18 has a cylindrical casing 30, a gas generating agent 32 filled in the casing 30, gas ejection holes 34 formed in the casing 30, and a casing. And a bolt 36 protruding from 30. The bolt 36 penetrates the rear surface portion of the inflator cover 24, and the nut 38
Is screwed in. Thereby, the inflator 18 is fixed to the container 12. The container lower 22 is provided with a slit 40 for introducing the gas ejected from the gas ejection holes 34 into the container upper 20.

To fix the container 12 to the vehicle body, a front bracket 42 is fixed to the container upper 20, and a rear bracket 4 is attached to the inflator cover 24.
4 is fixed. These front brackets 42,
The rear bracket 44 is fixed to the vehicle body-side members 46 and 48 with bolts 50 and 52.

The lid 16 has leg pieces 50 and 52 projectingly provided on the back surface thereof.
52 is container upper 2 with rivets 54 and 56
It is stopped at 0.

In the passenger seat airbag apparatus 10 thus constructed, when the inflator 18 is actuated, gas is ejected and the airbag 14 is deployed. Then, the root portion of the leg piece portion 52 is torn, the lid 16 rotates in the opening direction as indicated by arrow A, and the airbag 14 is largely deployed in the vehicle compartment.

[0009]

However, the above-mentioned conventional installation structure of the air bag device has a disadvantage that the vehicle weight is increased due to the use of the bracket.

[0010]

In the installation structure of the airbag device of the present invention, the airbag device is fixed to the member on the vehicle body side by using bolts for fixing the inflator to the container.

That is, the installation structure of the airbag device of the present invention is an installation structure of the airbag device in which the airbag device is attached to the vehicle body side member, and the airbag device accommodates the airbag in the container. At the same time, an inflator for deploying the airbag is attached to the container by a bolt protruding from the inflator, and the airbag device is attached to the vehicle body member by the bolt. It is a feature.

[0012]

According to the installation structure of the airbag device of the present invention, it is possible to omit or reduce the number of brackets for attaching the airbag device to the vehicle body member. As a result, the vehicle-mounted weight of the airbag device can be reduced.

The inflator has a thick, high-strength, high-rigidity casing so as to sufficiently withstand the generated gas pressure. Therefore, when the inflator is fixed to the member on the vehicle body side, the inflator acts as an airbag device fixing member such as a high-strength and high-rigidity frame, and the inflator firmly strengthens a portion of the container of the airbag device near the inflator. It will be a supporting structure. As a result, the attachment of the airbag device to the vehicle body member becomes extremely robust.

By the way, this inflator is generally provided on the rear side of the container. Therefore, the inflator firmly fixes the rear side of the container to the vehicle body side member. As a result of being able to firmly fix the rear side of the container to the vehicle body side member in this way, supporting the front side of the container to the vehicle body side member may be omitted.

When the support for the vehicle body side member on the front side of the container is omitted, the rigidity of the front side of the container can be reduced to provide a crushable structure. With such a crushable structure, when an impact is applied to the container, the container is deformed and the impact is absorbed. As a result, when a shock is applied to the instrument panel to which the passenger seat airbag device is attached, this shock (instrument panel shock) can be absorbed.

[0016]

Embodiments will be described below with reference to the drawings. FIG. 1 is a sectional view showing an installation structure of an airbag device according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II in FIG.

In the present embodiment, the bolt 60 provided on the inflator 58 is slightly longer than the conventional bolt 36, and the inflator 5 is utilized by utilizing this bolt 60.
8 and airbag device 10 having the inflator 58
A is fixed to the body member 62. Incidentally, 64 is a nut screwed into the bolt 60, and 66 is a washer (for example, a washer) having a temporary fixing function. The other configurations are the same as those of the conventional example except that the front bracket and the rear bracket are omitted, and accordingly, the vehicle body side member 46 is omitted. Therefore, the same or corresponding parts are designated by the same reference numerals. The description is omitted.

In the installation structure of the airbag apparatus according to the embodiment thus constructed, the front bracket 4
Since the second and rear brackets 44 and the vehicle body-side member 46 are omitted, the vehicle-mounted weight of the airbag device 10A can be reduced. Also, since there are few attachment points (screw fastening points), the attachment work is simple.

Since the casing 30 of the inflator 58 is thick and has high strength and rigidity, when the inflator 58 is fixed to the vehicle body side member 62, the inflator 58 mounts the airbag device 10A on the vehicle body side. It plays a role of a fixing member that is extremely firmly attached to the member 62. Moreover, the inflator 58 has a structure that firmly supports the rear side of the container 12. Therefore, the attachment of the airbag device 10A to the vehicle body side member 62 is extremely firm.

Further, in this embodiment, since the front bracket 42 is omitted, at least the front side of the container upper 20 can be made crushable. As a result, when an instrument panel impact is applied, this instrument panel impact can be absorbed. In order to make the container upper 20 crushable, a hole is made in the container upper or the container upper is made thin. By doing so, the weight of the container upper 20 can be reduced.

Although the front bracket 42 is completely omitted in the above embodiment, a front bracket may be provided in the present invention if necessary, and the front bracket may be connected to the vehicle body side member.

The above embodiment is an example of the present invention, and it is obvious that the present invention may have configurations other than those shown in the drawings.
For example, in the above embodiment, the container 12 includes the container upper 20, the container lower 22, and the inflator cover 2.
However, a separate container middle may be provided between the container upper and the container lower.

Further, although the above embodiment relates to the installation structure of the passenger airbag device, the present invention is an airbag device in which the inflator is fixed to the container by bolts protruding from the inflator. It is applicable to all installation structures.

[0024]

As described above, according to the installation structure of the airbag device of the present invention, it is possible to reduce the vehicle weight of the airbag device. Further, the container of the airbag device can have a shock absorbing structure, and when applied to the passenger seat airbag device, it is possible to absorb the instrument panel shock.

In the structure of the present invention, the number of brackets can be reduced or the brackets can be omitted altogether to simplify the work of mounting the airbag device.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an installation structure of an airbag device according to an embodiment.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a cross-sectional view showing an installation structure of a conventional airbag device.

FIG. 4 is a perspective view of an inflator.

[Explanation of symbols]

 10, 10A Airbag device 12 Container 14 Airbag 16 Lid 18,58 Inflator 30 Inflator casing 36,60 Bolt 42 Front bracket 44 Rear bracket 46,48,62 Body side member

Claims (1)

[Claims] 1. An installation structure of an air bag device in which an air bag device is attached to a vehicle body side member, wherein the air bag device accommodates the air bag in a container and deploys the air bag. The installation structure of an airbag device, wherein the airbag device is attached to the container by a bolt protruding from the inflator, the airbag device being attached by the bolt.