JPH0796810A - Air bag device - Google Patents

Abstract

PURPOSE:To provide an air bag device with which bag fitting workability is improved and possibility of erroneous bag fitting is eliminated in fitting of an air bag having a rectangular gas inflow port to a case. CONSTITUTION:This air bag device is provided with an air bag 1 having a rectangular gas inflow port 2, an inflator 3, a case 5 formed with a fitting flange 4, and a retainer 6. The air bag 1 is provided with a bag fitting base part 16 composed of four pieces of fin parts 14. The fitting flange 4 and the bag fitting base part 16 are furnished with a plurality of fitting holes. The retainer 6 is provided with fitting studs 18. At both ends of each fin part 14 of the bag fitting base part 16, a fin extension part having a fitting hole corresponding to a fitting hole of an adjacent fin part 14 is formed, and the fin extension part is overlapped and fixed to the adjacent fin part 14 so as to integrally join the bag fitting base part 16 into a ring-shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folded airbag having a rectangular gas inlet, an inflator for supplying gas to the airbag, an inflator surrounding the inflator, and the airbag. The present invention relates to an airbag device including a case having a rectangular mounting flange for mounting, a rectangular ring retainer for mounting the airbag on the mounting flange, and a lid for covering a front opening of the case.

Here, an example will be described of an airbag for a passenger seat, in which the device case is divided into two parts and has an airbag deployment protrusion in the horizontal direction. However, the invention is not limited to this, and the airbag deployment protrusion is upward. The present invention can be applied to various types of airbag devices, such as an airbag device for a passenger seat facing the vehicle, a device case of a non-divided type, and an airbag device for a steering wheel / rear seat.

[0003]

2. Description of the Related Art FIGS. 1 and 2 show a conventional example of a passenger seat airbag device.

A folded air bag 1 having a rectangular gas inlet 2, an inflator 3 for supplying gas to the air bag 1, and a surrounding of the inflator 3 and the air bag 1 for attaching the air bag 1. Mounting flange 4
Case 5 with the air bag 1 and the mounting flange 4
Rectangular ring retainer 6 for attaching to the case and case 5
And a lid 7 that covers the front opening of the. Here, the case 5 is divided into a rear case 8 and a front case 9, and an outer flange 11 and an inner flange 12 formed to connect the two together form a mounting flange 4. There is.

The airbag 1 is provided with a mounting flange 4
Corresponding to the above, each side of the rectangular gas inflow port 2 is provided with a bag attachment base portion 16 including four pieces of fin portions 14 and 15 folded inward. The reason why the fin portion is four pieces is that, in the case of an airbag for a passenger seat or the like, a pair of side cloths 21 having a formed shape are formed by surrounding and sewing the main cloth 22. The airbag 1 is formed by sewing a woven fabric made of heat-resistant fiber such as polyamide.

Mounting flange 4 and bag mounting base 1
7, a plurality of mounting holes 24 are formed correspondingly.

The ring retainer 6 also has a mounting stud (mounting bolt portion) 18 or a mounting hole 19.

The air bag 1 is attached to the case 5 as follows.

The rectangular gas inflow port 2 of the airbag 1 is made submerged to position the ring retainer 6 on the back side of the mounting base 16, and the bolt portion 18 of the ring retainer 6 is attached to the bag mounting base 16 and the inner flange 12 of the front case 9. The bag mounting base portion 16 of the airbag 1 is sandwiched between the ring retainer 6 and the inner flange 12 of the front case 9 by being inserted into each of the mounting holes 24. Then, the bolt portion 18 is inserted into the mounting hole 24 of the outer flange 11 of the rear case 8, and the nut 26 is fixed. The ring retainer 6 is riveted (not shown) to the mounting hole 19 through the mounting holes 24 of the bag mounting base 16, the inner flange 12, and the outer flange 11.

[0010]

However, when the airbag 1 is attached to the case 5, after the ring retainer 6 is submerged in the gas inlet 2 of the airbag 1, the bag attachment bases 16 are discontinuous with each other. 4 pieces of fins 14, 1
Since each of 5 is folded inward and the bolt portion 18 of the ring retainer 6 is inserted, there are the following problems.

In addition to the poor workability of mounting the bag, the fins 14 and 15 are partially bent, and in extreme cases, the mounting hole 24 of the bag mounting base 16 is attached to the bolt portion 18.
There is a risk that a defective attachment of the bag, such as the attachment of the airbag 1, may occur without being inserted.

In view of the above, the present invention can improve the workability of attaching the bag when attaching the air bag having the rectangular gas inflow port to the case, and there is no possibility of erroneous attachment of the bag. The purpose is to provide a device.

[0013]

The airbag device of the present invention solves the above-mentioned problems by the following constitution.

A folded airbag having a rectangular gas inlet, an inflator for supplying gas to the airbag, a rectangular mounting flange surrounding the inflator and the airbag, and a mounting flange for mounting the airbag. A case having, a rectangular ring retainer for attaching the airbag to the mounting flange, and a lid for covering the front opening of the case are provided, and the airbag has a rectangular shape corresponding to the mounting flange. Each side of the gas inlet is provided with a bag mounting base consisting of four pieces of fins that are folded inward. The mounting flange and the bag mounting base have a plurality of mounting holes corresponding to each other, and the ring retainer has a mounting stud. Alternatively, in an airbag device having a mounting hole, one end of each fin of the bag mounting base or A fin extension portion having attachment holes corresponding to the attachment holes of the adjacent fin portions is formed at both ends, and the fin extension portions are superposed and fixed to the adjacent fin portions, and the bag attachment base portion is connected and integrated in a ring shape. It has been characterized.

[0015]

The airbag device for a passenger seat according to the present invention has the following actions and effects due to the above-mentioned configuration.

A fin extension portion having attachment holes corresponding to the attachment holes of the adjacent fin portions is formed at one end or both ends of each fin portion of the bag attachment base, and the fin extension portions are overlapped and fixed to the adjacent fin portions. The bag attachment base is connected and integrated in a ring shape. Therefore, since the ring retainer is attached to the bag attachment base, the attachment workability is improved, and there is no possibility that the ring retainer will be attached with a part of the fin bent, that is, the bag may be attached incorrectly. There is no.

Further, since the mounting hole is also formed in the fin extending portion, the mounting hole can be used as a positioning hole when the adjacent fins are fixedly connected to each other, and the workability of fixing the adjacent fins to each other is also improved. It is good.

[0018]

Embodiments of the present invention will now be described with reference to the drawings. The same parts as those in the prior art example are designated by the same reference numerals, and the description thereof is omitted in whole or part.

(1) The airbag device of this embodiment is shown in FIG.
It has the following configuration in common with the prior art shown in FIG.

A folded air bag 1 having a rectangular gas inlet 2, an inflator 3 for supplying gas to the air bag 1, and a surrounding of the inflator 3 and the air bag 1 for mounting the air bag 1. Mounting flange 4
Case 5 with the air bag 1 and the mounting flange 4
Rectangular ring retainer 6 for attaching to the case and case 5
And a lid 7 that covers the front opening of the.

The airbag 1 has a mounting flange 4
Corresponding to the above, each side of the rectangular gas inflow port 2 is provided with a bag attachment base portion 16 including four pieces of fin portions 14 and 15 folded inward.

Mounting flange 4 and bag mounting base 1
7, a plurality of mounting holes 24 are formed correspondingly.

(2) In this embodiment, as shown in FIG. 3, at both ends of the short fin portion 15 of the bag attachment base portion, attachment holes corresponding to the attachment holes 24 of the adjacent long fin portion 14 are formed. Fin extensions 15a, 15 having 24
a is formed. Then, as shown in FIG. 4, the fin extending portion 15a is overlapped with the longitudinal fin portion (adjacent fin portion) 14 and is sewn (fixed) S, that is, the short fin portion 15 and the long fin portion 14 are joined together. They are connected to each other, that is, the bag mounting base 16 is connected and integrated in a ring shape.

Here, when performing the sewing, as shown in FIG. 5, if a work table 30 having a pin 28 that can be fitted into the mounting hole 24 of the bag mounting base 16 is used,
The mounting hole 24 can be used as a positioning hole, and the workability of fixing is improved.

The fixing means is not limited to sewing, but staples (staples), adhesive, or heat fusion may be used.
In either case, the pin 28 is inserted into the overlapping mounting holes 24, 24, and the positioning is performed.

The extending portions 15a may be formed at opposite ends of the longitudinal fin portion 14, or may be formed at the opposite positions.
The fin portions 14 and 15 may be formed only at one end portion in the counterclockwise direction or in the clockwise direction, and may be sequentially superposed on the adjacent fin portions.

In this way, the airbag 1 as shown in FIG. 6 in which the fins are connected and the bag mounting base 16 is integrated.
Is attached to the case 5 as described above.

That is, the ring retainer 6 is provided inside the mounting fin 2 with the rectangular opening of the airbag 1 hidden, and the bolts 18 are provided on the bag mounting base 2 of the airbag 1 and the inner flange 12 of the front case 9. The ring retainer 6 and the inner flange 12 of the front case 9 are inserted into the attachment holes 24, so that the bag attachment base 16 of the airbag 1 is inserted.
To pinch. At this time, since the ring retainer 6 is attached to the bag attaching base portion 16 in a state where the bag attaching base portion 16 is connected and integrated in a ring shape, the attaching workability is good, and the fin portions 14 and 15 are partially bent. There is no risk that the ring retainer 6 will be attached as it is.

Then, the bolt portion 18 is inserted into the mounting hole 24 of the outer flange 8 of the rear case 7, and the nut 26 is fixed. Further, the site where the mounting hole 19 is formed in the ring retainer 6 is the bag mounting base 16 and the inner flange 1
2 and the rivets are fixed through the mounting holes 24 of the outer flange 11.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an example of an airbag device of the present invention.

FIG. 2 is a perspective view showing an attachment mode of the airbag of the airbag device.

FIG. 3 is a partial perspective view showing a state before sewing a bag attachment base portion of an airbag according to an embodiment of the present invention.

FIG. 4 is a partial plan view showing a fixing (lock stitch) portion of adjacent fin portions in the bag attachment base portion of FIG. 3;

FIG. 5 is a schematic cross-sectional view showing one aspect when performing the fixing (lock stitch) work of FIG.

FIG. 6 is an overall perspective view of an airbag used in the airbag device of the present invention.

[Explanation of symbols]

 1 Airbag 2 Gas Inlet 3 Inflator 4 Mounting Flange 5 Case 6 Ring Retainer 7 Lid 8 Rear Case 9 Front Case 11 Outer Flange 12 Inner Flange 14 Long Fins 15 Short Fins 15a Fin Extension 16 Bag Mounting Base 18 mounting stud (bolt part) 19 mounting hole 24 mounting hole 26 nut 21 side cloth 22 main surface cloth S lock stitch (fixed)

Claims (1)

[Claims] 1. A folded airbag having a rectangular gas inlet, an inflator for supplying gas to the airbag, a rectangular mounting flange surrounding the inflator and the airbag, and a mounting flange for mounting the airbag. A case having, a rectangular ring retainer for attaching the airbag to the mounting flange, and a lid body that covers a front opening of the case, the airbag corresponding to the mounting flange, Each of the sides of the rectangular gas inlet is provided with a bag attachment base consisting of four pieces of fins that are folded inward, and the attachment flange and the bag attachment base are respectively formed with a plurality of attachment holes. The retainer has a mounting stud and / or a mounting hole, wherein the retainer has a mounting stud and / or a mounting hole. A fin extension portion having an attachment hole corresponding to an attachment hole of an adjacent fin portion is formed at one end or both ends of each fin portion, and the fin extension portion is superposed and fixed on the adjacent fin portion to form the bag attachment base portion. The airbag device is characterized by being integrally connected in a ring shape.