JPH0396453A - Air bag device - Google Patents

Abstract

PURPOSE:To eliminate danger of fallout of a belt catch part from a base plate by sewing the belt catch part on the gas inlet port side of a rear side member while forming the belt catch part into two-folded belt catch members connected by one side part, and sewing the end parts of hanging belts on the two-folded members. CONSTITUTION:A belt catch part composed of two folded members 14 are sewed on the gas inlet port side of a rear side member of an air bag body. This belt catch part if formed into upper and lower belt catch members 14 with one side part 15 connected to each other. Gas inlet ports 17 are formed respectively in the central parts of the belt catch members 14, and the side parts 21a of four hanging belts 21 are sewed on notches 18 formed on four corners of the respective belt catch members 14, with the side parts inserted, with a specified length, between the upper and lower belt catch members 14. After that, the belt catch members 14 are sewed around the gas inlet port, and the rear member of the air bag body is fixed through a retainer to a base plate.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an airbag device that protects occupants in the event of a collision of a vehicle, etc. More specifically, the present invention relates to an airbag device that protects occupants in the event of a collision of a vehicle, etc. The present invention relates to an air bag device comprising:

[Conventional technology]

2. Description of the Related Art Airbag devices have been known as protection devices for occupants of vehicles and the like. As this protective device,
-43890, Japanese Utility Model Application Publication No. 61-185642, etc. exist.

Further, as shown in FIG. 4, a gas generator 2 is fixed to a base plate 1 attached to a fixed side of a steering wheel, etc., and an airbag body 3 having a gas inlet 4 is attached to a retainer 5.
When the gas generator is activated under predetermined conditions, gas instantaneously flows into the air bag body 3, causing the air bag nog body 3 to inflate instantaneously.

The airbag main body 3 is formed by sewing together the outer circumferences of a front side member 3a and a rear side member 3b made of two circular cloth materials, and the gas inlet is provided in the center of the rear side member 3b. 4 is shaped.

In addition, the main flow of gas from the gas generator 2 (indicated by arrow a) is transferred from the gas inlet 4 to the front side member 3a of the airbag body 3.
In order to prevent the airbag body 3 from expanding in substantially one direction toward the passenger, the end 6a of the suspension belt 6 is attached to the rear side member 3b of the airbag body 3 by sewing or the like.
Further, this mounting portion is clamped and fixed by the retainer 5 and the base plate 1.

As shown in FIG. 5, the end 6a of the suspension belt 6 is sewn to two upper and lower belt catches 8, and the ends 6a of the suspension belt 6 are sewn between the two belt catches 8, respectively. It is designed so that

In addition, when a pair of suspension belts 6 are used in a substantially U-shape, there are four end portions 6a, and when four suspension belts 6 are used, one end of which is fixed to the front side member 3a, similarly, there are four end portions 6a. There are four parts 6a, and the belt catch 8 is formed into a substantially square shape, and the ends 6a of the pair of suspension belts 6 or the ends 6a of the four suspension belts 6 are sewn to the four corners of the square shape. .

[Problem to be solved by the invention]

However, since the conventional belt cuffs 8 are used in two layers, there is a risk that the two belt cuffs 8 may be misaligned, and the end portions 6a of the plurality of hanging belts 6 may have different lengths on the left and right or opposite positions. There is a risk of being sewn with
If the lengths are different, the load applied between the retainer 5 and the base plate l will not be uniform, and there is a risk that a portion of the belt catch 8 will fall off from the base plate 1. The work of accurately overlapping is complicated, the number of parts increases, and the work efficiency cannot be improved.Furthermore, since the belt cassocket 8 is made of cloth, the vertical and horizontal extensions are different, and there are weave patterns. Direction is important when installing the belt cassocket 8, and if this direction is ignored when installing, the load will not be uniform,
There was a risk that a portion of the belt catch 8 would fall off as well.

The purpose of the present invention is to eliminate the risk of two overlapping belt catches being misaligned, preventing them from being set in the wrong direction during installation, and eliminating the risk of the belt catch falling off from the base plate. The present invention provides an airbag device that can significantly improve work efficiency by reducing the number of parts.

[Means to solve the problem]

The present invention has been made in view of the above-mentioned problems, and includes an air bag nog device including an airbag main body connected to a gas generator, wherein the airbag main body has a gas injection port fixed to the gas outlet side of the gas generator. It consists of a rear side member in which a is formed, and a front side member sewn along the outer periphery of the rear side member, a belt cassocket is sewn on the gas inlet side of the rear side member, and the belt catch is sewn on the gas inlet side of the rear side member. It is characterized in that it is folded into two pieces with one side connected, and the end of the hanging belt is sewn to the folded part.

[Effect]

According to the present invention, the belt cassocket sewn to the gas inlet side of the rear side member of the airbag body is folded back at the center to form two pieces, and one side is connected. Therefore, the upper and lower belt cassockets can be overlapped without misalignment, and the end of the suspension belt is sewn to this folded part, so the end of the suspension belt can be attached to the belt catch in the same way. It is possible to sew uniformly along the length, and since the belt canch is connected on one side, there is no risk of misdirection, and a uniformly attached state can be obtained.

〔Example〕

Hereinafter, the airbag device according to the present invention will be described in detail with reference to the drawings.

1 to 3 each schematically show an embodiment of an airbag device according to the present invention, and except for the belt cassocket I4 of the airbag body of the airbag device, it is different from that shown in the prior art described above. They have a similar structure.

A two-fold belt cassocket 14 is sewn to the gas inlet side of the rear side member of the airbag main body, and this belt cassocket member 14 is formed into two upper and lower folds with one side portion 15 connected. As shown in Fig. 2, the belt catch l4 has a slit 16 in the center of the rectangle, which is divided into left and right halves.
is formed, and by folding it back at this slit 16, the overlapping belt cuff l4 shown in FIG. 1 is released. Note that if the length of the slit 16 is increased, folding can be easily performed.

There is a gas inlet l7 in the center of the upper and lower belt catches l4.
are formed respectively, and notches are formed at the four corners, and the side portions 21a of the four hanging belts 21 are sewn into the notches 18 with a predetermined length inserted between the upper and lower belt catches 14. There is. If the insertion position of the end 21a of the suspension belt 21 is clearly marked on the end 21a of the suspension belt 21, the insertion length can be made accurate. Furthermore, although four suspension belts 21 are used in this embodiment, the number of suspension belts 21 can be increased or decreased as appropriate.

The end portion 21a of the hanging belt 21 is attached to the belt catch 14.
After sewing, this belt catch 14 is sewn along the gas inlet 17 with the gas inlet 17 aligned with the gas inlet of the rear side member of the airbag body, and this rear side member is attached to the base plate. The air bathog main body is attached by fixing it to the retainer via a retainer.

〔Effect of the invention〕

The above is the structure of one embodiment of the airbag device according to the present invention. According to this structure, the belt catch sewn to the gas inlet side of the rear side member of the airbag body is located at the center. Since the part is folded back to form a two-piece fold, and one side is connected, the upper and lower belt catches can be overlapped without causing any misalignment. Since the end of the hanging belt is sewn,
The end of the suspension belt can be sewn uniformly to the belt catch at the same length, and since the belt catch is connected on one side, there is no risk of misdirection, and the installation is uniform. Accordingly, it is possible to obtain an airbag device in which there is no risk of the belt catch falling off from the base plate, the number of parts can be reduced, and work efficiency can be improved.

[Brief explanation of drawings]

1 to 3 schematically show an embodiment of an airbag device according to the present invention, in which FIG. 1 is a front view of a belt cassocket, FIG. 2 is a front view of the same in the deployed state, and FIG. 4 is a sectional view of a belt catch, FIG. 4 is a side sectional explanatory view of a conventional airbag device, and FIG. 5 is a front view of a conventional bell l/cassochi. In the figure, l4...belt catch, 15...one side,
16...Slit, 17...Gas inlet, 18...
- Notch, 21... Hanging belt, 21a... End. Figure I

Claims (1)

[Claims] (1) In an airbag device including an airbag main body connected to a gas generator, the airbag main body includes a rear side member formed with a gas inlet fixed to the gas outlet side of the gas generator; A front side member is sewn along the outer periphery of the rear side member, and a belt catch is sewn on the gas inlet side of the rear side member, and the belt catch is two pieces connected at one side. An airbag device characterized in that the airbag device is formed in a folded manner, and an end portion of a suspension belt is sewn to the folded portion.