JPH0747899A - Air bag device - Google Patents

Abstract

PURPOSE:To improve strength of a guide and further to improve economical efficiency and safety by preventing an air bag main unit, when it is swollen, from hitting a mounting bolt and rivet of a lid, preventing the air bag main unit from its damage, eliminating necessity for work of stopping bolts and nuts loosened, and decreasing assembling man-hours. CONSTITUTION:A gas generator is stored to be secured to a storage vessel 12. An air bag main unit is provided in a side of a gas jetting opening 15 of the storage vessel 12. A guide is provided in the storage vessel 12, and a lid 21 is provided in a position opposed to a side of the gas jetting opening 15. A retainer 33 having a hollow-shaped part 35 is secured to outside the guide. A mounting piece 22 of the lid 21 is stopped by a rivet 45 to the hollow-shaped part 35 of the retainer 33.

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 for protecting an occupant in the event of a vehicle collision, and more specifically, a gas generator housed and fixed in a container and a gas jet from the container. An airbag body provided on the opening side for use,
An airbag including a guide provided on the storage container and a lid provided at a position facing the gas ejection opening side, and an attachment piece provided on the lid fixed to the guide. Regarding the device.

[0002]

2. Description of the Related Art Conventionally, an airbag device has been known as a device for protecting an occupant such as a vehicle. Examples of this protective device include Japanese Patent Publication No. 56-43890 and Japanese Utility Model Publication No. 61-1.
There are 85642 and JP-A-4-27639.

As shown in FIGS. 6 and 7, an airbag device 11 has a storage container 12 fixed to a vehicle body frame side via a fixing bracket or the like, and a gas generator 13 is stored and fixed in the storage container 12. Has been done. The storage container 12 is formed of a base lower 12a and a base upper 12b.

A gas ejection opening 15 is formed in the base upper 12b, and an airbag body 17 is fixed to the upper portion of the base upper 12b on the gas ejection opening 15 side of the base upper 12b via a retainer or the like. A guide 19 is provided on the upper end of the base lower 12a of the storage container 12.
Are formed so as to extend upward.

A lid 21 is arranged at a position facing the gas ejection opening 15 side, and a mounting piece 22 of the lid 21 is provided.
Are fixed to the guide 19. The attachment piece 22 of the lid 21 is fixed to a bolt 24 inserted from the inside of the guide 19 via a retainer 26 provided outside the attachment piece 22 to secure a nut 28.

When the gas generator 13 is operated under a predetermined condition, the gas generated from the gas generator 13 instantaneously flows into the airbag body 17 and the lid 21 is broken due to division or the like. Thus, the airbag body 17 is designed to bulge instantly.

[0007]

In the conventional airbag device 11, the guide 19 may be deformed by the gas pressure generated from the gas generator 13, and the lid 2
Since the mounting piece 22 of No. 1 is fixed by the bolt 24 inserted from the inside of the guide 19, the airbag body 1
At the time of bulging of No. 7, the airbag main body 17 hits the head of the bolt 24, and the airbag main body 17 may be damaged.

The bolt 24 is fixed to the nut 28 via a retainer 26 arranged outside the mounting piece 22, but the bolt 24 and the nut 28 are loosened due to the vibration of the vehicle or the like. Therefore, the bolt 24 and the nut 28 are loosened. Since the fixing work is required, the number of assembling steps is increased, the nut 28 is located outside the mounting piece 22 of the lid 21, and the bolt 24 is inserted from the inside of the guide 19. Therefore, the setting of the lid 21 is complicated. Had.

An object of the present invention is to improve the strength of the guide, and when the airbag body is inflated, the airbag body does not hit bolts or retainers for mounting the lid, and the airbag body is damaged. (EN) Provided is an air bag device which is not feared, does not require a bolt and nut loosening prevention work, can reduce the number of assembling steps, and is excellent in economy and safety.

[0010]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an airbag device according to claim 1 has a gas generator housed and fixed in a container and a gas in the container. An airbag body provided on the ejection opening side,
An airbag including a guide provided on the storage container and a lid provided at a position facing the gas ejection opening side, and an attachment piece provided on the lid fixed to the guide. In the apparatus, a retainer having a concave portion is fixed to the outside of the guide, and a mounting piece of the lid is riveted to the concave portion of the retainer.

An air bag device according to a second aspect of the present invention includes a gas generator housed and fixed in a storage container, an air bag body provided on a gas ejection opening side of the storage container, and the storage container. An airbag apparatus comprising: a guide provided; and a lid provided at a position facing the gas ejection opening side, wherein an attachment piece provided on the lid is fixed to the guide. The guide is formed with a protrusion projecting outward, and the attachment piece of the lid is riveted to the protrusion.

[0012]

According to the airbag device of the first aspect of the present invention, the retainer having the concave portion is fixed to the outside of the guide, and the attachment piece of the lid is riveted to the concave portion of the retainer. , The guide is reinforced by the retainer, and the rivet is stored inside the recessed part of the retainer, does not project inside the guide, does not hit the rivet etc. when the airbag body swells, and the airbag body is damaged There is no fear of doing it. In addition, it is not necessary to prevent the bolts and nuts from loosening, and the number of assembly steps can be reduced.

According to the airbag device of the second aspect of the present invention, the guide is formed with the protrusion protruding outward, and the attachment piece of the lid is riveted to the protrusion. The rivet is housed inside the protrusion, does not project inside the guide, does not hit the rivet or the like when the airbag body swells, and there is no risk of damaging the airbag body. In addition, it is not necessary to prevent the bolts and nuts from loosening, and the number of assembly steps can be reduced, and the number of parts can be further reduced.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An airbag device according to the present invention will be described in detail below with reference to the drawings. 1 to 3 each show an outline of one embodiment of the present invention. The parts corresponding to those of the conventional airbag device described with reference to FIGS. The detailed description is omitted here.

The air bag device 31 will be described as an air bag device on the passenger side, which is the instrument panel side, but it may also be used on an air bag device which is mounted with the steering side or the side door side and the rear seat side fixed. it can.

As shown in FIG. 1, the storage container 12 of the airbag device 31 includes a base lower 12a and a base upper 1.
And 2b. A gas ejection opening 15 is formed in the base upper 12b.
As described above, the airbag main body 17 is fixed to the upper portion of the base upper 12b on the gas ejection opening 15 side through a retainer or the like.

A guide 19 is formed at the upper end of the base lower 12a of the storage container 12 so as to extend upward, and a retainer 33 having a concave portion 35 is fixed to the outside of the guide 19. The retainer 33 is arranged so that the inside of the attachment piece 22 of the lid 21 abuts the outside of the concave portion 35 of the retainer 33.

The retainer 33 has a through hole 3 for a rivet.
7 is drilled, and a through hole 39 for rivet is drilled in the attachment piece 22 of the lid 21 facing the through hole 37.
The mounting piece 22 of the lid 21 is fixed to the rivet 41 by driving the rivet 41 into the through holes 37 and 39 for rivets in the concave portion 35 of the retainer 33.

In this embodiment, the rivet 41 has a core receiver 43 and a rivet core 45 as shown in FIG. 3, but the present invention is not limited to this.

According to this structure, the guide 19 is reinforced by the retainer 33, and the core bearing 43 of the rivet 41 is used.
The rivet core 45 is housed inside the concave portion 35 of the retainer 33, does not project inside the guide 19, and does not hit the rivet 41 or the like when the airbag body 17 is inflated.

FIG. 4 and FIG. 5 show different embodiments of the present invention. The parts corresponding to those of the above-mentioned embodiments are designated by the same reference numerals and the detailed description thereof will be omitted.
Instead of forming the concave portion 35 on the retainer 33, a protrusion 51 protruding outward is formed on the guide 19, and the attachment piece 22 of the lid 21 is fixed to the protrusion 51 by the rivet 41. It is a thing.

According to this structure, the rivet 41 has the protrusion 5
It is housed inside 1, does not project to the inside of the guide 19, does not hit the rivet 41 or the like when the airbag body 17 swells, and can prevent the airbag body 17 from being damaged. In addition, the work to prevent the bolts and nuts from loosening is unnecessary, and the number of assembly steps can be reduced.
Further, the number of parts can be reduced.

Further, in the embodiment shown in FIG.
The plate 53 is fixed to the lower side of the protrusion 51 shown in FIG. 1, that is, on the extension line of the guide 19, and the lower side of the protrusion 51 is configured to be in a closed state. The plate 53 does not hit the inside of the protrusion 51 when the airbag body 17 is inflated, and there is no risk of hindering the deployment of the airbag body.

[0024]

The structure of one embodiment of the airbag device according to the present invention has been described above. According to the airbag device according to claim 1 of the present invention, the retainer having the concave portion on the outer side of the guide is provided. Since the mounting piece of the lid is riveted to the recessed portion of the retainer, the guide is reinforced by the retainer, and the rivet is housed inside the recessed portion of the retainer and can project inside the guide. Without
When the airbag body swells, it does not hit a rivet or the like, and there is no risk of the airbag body being damaged. In addition, it is not necessary to prevent the bolts and nuts from loosening, and the number of assembly steps can be reduced.

Further, according to the airbag device of the second aspect of the present invention, the guide is formed with the protrusion protruding outward, and the attachment piece of the lid is riveted to the protrusion. So, the rivet is stored inside the protrusion,
It does not project inside the guide, does not hit rivets or the like when the airbag body swells, and there is no risk of damaging the airbag body. In addition, the work to prevent the bolts and nuts from loosening is unnecessary, and the number of assembly steps can be reduced.
Further, it is possible to reduce the number of parts, and it is possible to obtain an airbag device which is lightweight and excellent in economy and safety.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a main part of an airbag device according to the present invention.

FIG. 2 is a perspective view of an airbag device according to the present invention.

FIG. 3 is an enlarged cross-sectional view of a lid mounting piece according to the present invention in a riveted state.

FIG. 4 is a partial cross-sectional view of a different embodiment of the airbag device according to the present invention.

FIG. 5 is a partial cross-sectional view of a different embodiment of the airbag device according to the present invention.

FIG. 6 is a perspective view of a conventional airbag device.

FIG. 7 is a sectional view of a conventional airbag device.

[Explanation of symbols]

 12 storage container 12a base lower 12b base upper 13 gas generator 15 gas ejection opening 17 airbag body 19 guide 21 lid 21a attachment piece 31 airbag device 33 retainer 35 recessed portion 37 through hole 39 through hole 41 rivet 43 core receiving 45 Rivet core 51 Projection 53 Plate

Claims (2)

[Claims] 1. A gas generator housed and fixed in a storage container, an airbag body provided on the gas ejection opening side of the storage container, a guide provided on the storage container, and the gas ejection opening side. And a lid provided at a position opposite to the lid, wherein an attachment piece provided on the lid is fixed to the guide, and a retainer having a concave portion is fixed to the outside of the guide. The airbag device, wherein the lid mounting piece is riveted to the recessed portion of the retainer. 2. A gas generator housed and fixed in a storage container, an airbag body provided on the gas ejection opening side of the storage container, a guide provided on the storage container, and the gas ejection opening side. And a lid provided at a position opposed to the lid, wherein an attachment piece provided on the lid is fixed to the guide, in the guide, a protrusion protruding outward is formed in the guide. And an attachment piece of the lid is riveted to the protrusion.