JPH10194067A - Air bag device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the width of a housing case, and thereby miniaturize the air bag device, concurrently eliminate each bracket, and reduce parts in number, project each bolt out of the inner side of a seat, and thereby suppress the seat in thickness, and thereby perform mounting operations simply and quickly. SOLUTION: A gas generator 29 is formed into a cylindrical long and slender shape. A plurality of bolts 33 are mounted onto an inflator case 27, and the bolt parts 33b of a plurality of the bolts 33 are projected out of the outer part of the inflator case 27. A housing case 25 is formed into a U shape in cross section. Slots 35 are formed in the circular arc surface 25c of the housing case 25. The bolt parts 33b of a plurality of the bolts 33 are inserted into the slots 35 of the housing case 25, the inflator case 27 is rotated, and the bolt parts 33b of a plurality of the bolts 33 are thereby moved to a side surface at the side of a mounting part along the slots 35 of the housing case 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag device for a vehicle, and more particularly, to a storage case, a gas generator stored in the storage case, and a gas generator when the gas generator is operated. The present invention relates to an airbag device for a vehicle including an airbag body fixed to the storage case so that gas ejected from a gas generator flows in.

[0002]

2. Description of the Related Art Conventionally, in the case of a frontal collision or a side collision of a vehicle, various methods have been proposed to avoid a direct impact between a vehicle body such as a vehicle body or a door deformed by the impact load and a seated person. An airbag device has been proposed.
JP-A-50052, JP-A-7-228213, and the like, include a vehicle seat structure and an airbag device.

[0003] In the case of a side collision, the seat structure of this vehicle is arranged such that a seat cushion or a seatback side portion facing the vehicle body side wall is disposed between the seat cushion and a seat occupant in a direction perpendicular to the vehicle body side wall side or between a seated person and the vehicle. An airbag device that inflates into the space is provided. In addition, considering the ease of getting on and off and cushioning of the seat, the airbag device must be disposed at the lower or rear portion of the pad material of the seat cushion or the seat back. The feeling was worsened.

[0004] As shown in FIG.
A storage case 7 having a substantially U-shaped cross section is fixed to a bracket 5 fixed to the side portion 3a of the seat frame 3. The cylindrical elongated gas generator 9 and the cylindrical elongated inflator case 11 are inserted through the opening 7a of the storage case 7.

The gas generator 9 and the inflator case 11 of the airbag device 1 are inserted through the gas inlet 15 of the airbag body 13 and wrapped around the gas inlet 15 of the airbag body 13. I have.

[0006] A plurality of bolts 17 are attached to the inflator case 11, and the heads 1 of the plurality of bolts 17 are attached.
7 a is located inside the inflator case 11, and the bolt portions 17 b of the plurality of bolts 17 are
Projecting outside. The bolt portions 17 b of the plurality of bolts 17 are inserted into the bolt holes 7 b of the storage case 7 and the bolt holes 5 a of the bracket 5, and are fixed to the nuts 19.

[0007]

However, when the gas generator 9 of the airbag device 1 is mounted on the storage case 7 via the inflator case 11 as in the prior art, a plurality of bolts 17 are provided outside the inflator case 11. Since the bolts 17b of the storage case 7 protrude, the width of the storage case 7 must be made large. When the width of the storage case 7 is reduced, the bolts 17b of the plurality of bolts 17 It had to be inserted so as not to contact the side wall.

For this reason, the side portion 3 of the seat frame 3
The bracket 5 is fixed to a, and the bolt portions 17 b of the plurality of bolts 17 are linearly inserted from the opening 7 a of the storage case 7 and fastened to the nut 19. In the case of such a configuration, the bracket 5 is required, and there is a disadvantage that the number of parts increases. Further, since the bolts protrude rearward of the seat, there is a disadvantage that the thickness of the seat must be increased.

When the gas generator 9 and the inflator case 11 of the airbag device 1 are wrapped around the gas inlet 15 of the airbag body 13, the inflator case 11 and the storage case 7 are bolted to each other by bolts 17. The operation of fixing the nut 19 is on the back side of the storage case 7 on the side opposite to the side where the inflator case 11 is inserted, and there is a possibility that the mounting operation becomes difficult.

According to the present invention, it is possible to effectively absorb an impact load applied to a occupant in the event of a vehicle collision, reduce the width of a storage case, and reduce the size of an airbag device. The number of parts can be reduced by eliminating the need for a bracket, and there is no risk that bolts will protrude to the rear of the seat, and there is no risk of increasing the thickness of the seat. It is an object of the present invention to provide an airbag device for a vehicle that can be used.

[0011]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an airbag device for a vehicle according to the first aspect of the present invention has a storage case and a storage case inside the storage case. A gas generator, and an airbag body fixed to the storage case so that gas ejected from the gas generator flows in at the time of operation of the gas generator. A plurality of bolts are attached to the gas generator so as to protrude to the outside, and a long hole through which each of the plurality of bolts is inserted is formed in the storage case.

According to a second aspect of the present invention, there is provided an airbag device for a vehicle, wherein a storage case, a gas generator stored in the storage case, and a gas ejected from the gas generator when the gas generator is operated. And an airbag body fixed to the storage case so that the gas to be introduced flows into the storage case, the gas generator is stored in an inflator case, and a plurality of bolts are externally mounted on the inflator case. The storage case has a long hole through which the plurality of bolts are inserted.

According to a third aspect of the present invention, in the airbag device for a vehicle, the storage case is formed to have a substantially U-shaped cross section.
An elongated hole formed in the storage case is formed in an arc surface of the storage case.

According to a fourth aspect of the present invention, in the vehicle airbag device, the storage case is formed to have a substantially U-shaped cross section.
The length between the opposite side surfaces of the storage case is substantially equal to the outer diameter of the gas generator or the inflator case.

According to a fifth aspect of the present invention, in the vehicle airbag device, the storage case is formed to have a substantially U-shaped cross section.
The length between the opposite side surfaces of the storage case is formed substantially equal to the outer diameter of the gas generator or the inflator case, and the elongated hole formed in the storage case is attached to the mounting case from the side opposite to the opening of the storage case. It is characterized by being formed over the side.

According to a sixth aspect of the present invention, there is provided an airbag device for a vehicle, wherein one end of a long hole formed in the storage case is bent in an L shape.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an airbag device for a vehicle according to the present invention will be described in detail with reference to the drawings. FIG. 1 (a),
(B), (c) and FIG. 2 show an embodiment of an airbag device for a vehicle according to the present invention. As shown in FIG. 2, an airbag device 21 is an airbag for side collision of a vehicle. The case where the present invention is applied to an apparatus will be described. However, the present invention is not limited to this. The present invention can also be applied to an airbag apparatus for a driver's seat or a passenger's seat.

The airbag device 21 is fixed to an outer side frame 23a of a seat back frame 23 of a seat back. This airbag device 21
Are a storage case 25, an inflator case 27 stored in the storage case 25, a cylindrical elongated gas generator 29 stored in the inflator case 27, and a gas generator 29. An airbag body 31 is fixed so that gas ejected from the gas generator 29 flows in during operation.

As shown in FIGS. 4A and 4B, the inflator case 27 is formed in a cylindrical elongated shape.
A plurality of bolts 33 are attached to the inflator case 27 so as to protrude outside the inflator case 27, and a long hole 35 through which each of the plurality of bolts 33 is inserted is formed in the storage case 25.

The gas generator 29 of the airbag device 21
And, the inflator case 27 is inserted from the gas injection port 37 of the airbag body 31, and as shown in FIG.
The airbag body 31 is wrapped around the gas injection port 37 side.

The heads 33a of the plurality of bolts 33 are located inside the inflator case 27, and the plurality of bolts 33
Bolt portion 33b projects outside the inflator case 27. It should be noted that the plurality of bolts 33 may be formed only from the bolt portions 33b fixed to the outer periphery of the inflator case 27. Note that the inflator case 27 can be omitted. In this case, the gas generator 29 is directly inserted into the storage case 25, and a plurality of bolts 33 are attached to the gas generator 29 in a state of protruding outside.

As shown in FIGS. 1 (a), (b) and (c),
The storage case 25 is formed to have a substantially U-shaped cross section, and an elongated hole 35 formed in the storage case 25 is formed at the rear side of the storage case 25 on the side of the arc surface 25c. In addition, the length L1 between the opposite side surfaces 25a, 25b of the storage case 25
Are formed substantially equal to the outer diameter of the inflator case 27.

As shown in FIG. 1 (c), an elongated hole 35 formed in the storage case 25 extends from substantially the center of the arc surface 25c opposite to the opening 26 of the storage case to the mounting portion side on the side frame 23a side. , Approximately 90 °. Therefore, when the gas generator 29 of the airbag device 21 is attached to the storage case 25 via the inflator case 27, the bolt portions 33 b of the plurality of bolts 33 of the inflator case 27 are linearly formed from the opening 26 of the storage case 25. And the bolt portion 33b is inserted into the elongated hole 35.

Next, the bolt portions 33b of the plurality of bolts 33 of the inflator case 27 are pivotally moved along the elongated holes 35 toward the mounting portion on the side frame 23a side of the storage case 25, and the nut 39 is inserted from the inside of the side frame 23a. Stop it.

As shown in FIG. 1B, the storage case 25 is integrally formed in a substantially U-shaped cross section, and as shown in FIG. 3, upper and lower portions 25d and 25e of the storage case 25.
May be formed separately, and these may be fixed with screws 28.

FIGS. 5 (a) and 5 (b) show different embodiments of the present invention, respectively.
One end of the long hole 35 formed in the storage case 25 on the side frame 23a side is formed to be bent in an L-shape, and the plurality of bolts 33 of the inflator case 27 are respectively provided in the bent portion 35a of the long hole 35. It is inserted in a state where it has been dropped.

As shown in FIG. 5 (b), a screw hole 41 is formed in the arc surface 25c of the storage case 25, and a female screw 43 is formed in the inflator case 27 at a position facing the screw hole 41, and By screwing the screw 45 into the female screw 43 from the front side of the screw hole 41 of the case 25, the gas generator 29 and the inflator case 27 can be temporarily fixed.

[0028]

The above is an embodiment of the airbag device for a vehicle according to the present invention. According to the airbag device for a vehicle according to the first aspect of the present invention, a plurality of bolts are provided in the gas generator. Since the storage case is formed so as to protrude to the outside and has a long hole through which each of the plurality of bolts is inserted, the width of the storage case can be reduced, and the size of the airbag device can be reduced. It is possible to reduce the number of parts by eliminating the need for a bracket, and there is no risk that bolts will protrude to the rear of the seat, and there is no risk of increasing the thickness of the seat. .

According to the vehicle airbag device of the second aspect of the present invention, the gas generator is housed in the inflator case, and a plurality of bolts are attached to the inflator case so as to protrude to the outside. Since the long holes through which the bolts are inserted are formed in the storage case, the width of the storage case can be made small, the airbag device can be downsized, and the number of parts is reduced because brackets are unnecessary. In addition, there is no danger that the bolts will protrude to the rear of the seat, and there is no danger of increasing the thickness of the seat.

According to the airbag device for a vehicle according to the third aspect of the present invention, the storage case is formed to have a substantially U-shaped cross section, and the long hole formed in the storage case is formed in the arc surface of the storage case. Therefore, the width of the storage case can be made small, the airbag device can be downsized, the number of parts can be reduced because brackets are unnecessary, and bolts protrude to the rear of the seat. There is no danger and there is no danger of increasing the thickness of the sheet, and the mounting operation can be performed simply and quickly.

According to the airbag device for a vehicle according to the fourth aspect of the present invention, the storage case is formed to have a substantially U-shaped cross section, and the length between the opposing side surfaces of the storage case is set to the gas generator or Since the outer diameter of the inflator case is substantially equal to the outer diameter of the inflator case, the width of the storage case can be reduced, the size of the airbag device can be reduced, and the number of parts is reduced because a bracket is unnecessary. Can,
By moving the bolt to the side frame side mounting side along the long hole, the bolt can be directed to the inside of the seat, and there is no risk that the bolt will protrude to the rear of the seat, and the thickness of the seat may be increased. In addition, the mounting operation can be performed simply and quickly.

According to the airbag device for a vehicle according to the fifth aspect of the present invention, the storage case is formed to have a substantially U-shaped cross section, and the length between the opposing side surfaces of the storage case is the gas generator or Since the elongated hole formed in the storage case is formed to be substantially equal to the outside diameter of the inflator case and formed in the mounting portion side from the side opposite to the opening of the storage case, the width of the storage case is reduced. The airbag device can be downsized, the bracket is unnecessary, the number of parts can be reduced, and the bolt can be seated by moving the bolt to the side frame side mounting side along the elongated hole. And there is no risk that the bolt will protrude to the rear of the seat, there is no risk of increasing the thickness of the seat, and the mounting operation can be performed simply and quickly.

According to the vehicle airbag device of the present invention, since one end of the long hole formed in the storage case is bent in an L-shape, positioning can be easily performed. In addition, the mounting operation can be performed simply and quickly, and the gas generator can be reliably supported.

According to the present invention, it is possible to effectively absorb the impact load applied to the occupant in the event of a vehicle collision, reduce the width of the storage case, and reduce the size of the airbag device. The number of parts can be reduced by eliminating the need for a bracket, and there is no risk of bolts protruding to the rear of the seat, and there is no risk of increasing the thickness of the seat. An airbag device for a vehicle can be obtained.

[Brief description of the drawings]

FIG. 1 shows an airbag device for a vehicle according to the present invention, in which (a) is a cross-sectional view in a state applied to a vehicle seat,
(B) is a perspective view of the storage case, and (c) is Z in FIG. 1 (b).
Sectional drawing of the -Z line.

FIG. 2 is a perspective view showing a state in which the vehicle airbag device according to the present invention is applied to a seat back of a vehicle seat.

FIG. 3 is a perspective view showing another embodiment of the storage case of the airbag device for a vehicle according to the present invention.

4A and 4B show an airbag device for a vehicle according to the present invention, wherein FIG. 4A is an exploded perspective view of an inflator case and a gas generator, and FIG. Sectional drawing of the state which covered.

FIGS. 5A and 5B show still another embodiment of the storage case of the airbag device for a vehicle according to the present invention, wherein FIG. 5A is a partial perspective view of the storage case, and FIG. Partial sectional view of the stopped state.

FIG. 6 is a sectional view of a conventional vehicle airbag device.

[Explanation of symbols]

 Reference Signs List 21 airbag device 23 seat back frame 23a side frame 25 storage case 25a side surface 25b side surface 25c arc surface 27 inflator case 29 gas generator 31 airbag body 33 bolt 33a head 33b bolt portion 35 long hole 35a refraction portion 37 gas injection port 39 Nut 41 Screw hole 43 Female thread 45 Screw

Claims (6)

[Claims] 1. A storage case, a gas generator stored inside the storage case, and fixed to the storage case such that gas ejected from the gas generator flows in when the gas generator is operated. A plurality of bolts are attached to the gas generator so as to protrude outside, and a long hole through which the plurality of bolts are inserted is formed in the storage case. An airbag device for a vehicle, comprising: 2. A storage case, a gas generator stored inside the storage case, and fixed to the storage case so that gas ejected from the gas generator flows when the gas generator is operated. An airbag device for a vehicle, comprising: an airbag body; a gas generator housed in an inflator case, a plurality of bolts attached to the inflator case in a state of protruding to the outside, and each of the plurality of bolts An airbag device for a vehicle, wherein an elongated hole to be inserted is formed in a storage case. 3. The storage case is formed in a substantially U-shaped cross section, and a long hole formed in the storage case is formed in an arc surface of the storage case. An airbag device for a vehicle according to claim 1. 4. The storage case is formed to have a substantially U-shaped cross section, and a length between opposite side surfaces of the storage case is formed to be substantially equal to an outer diameter of a gas generator or an inflator case. The airbag device for a vehicle according to claim 1, 2 or 3, wherein 5. The storage case is formed to have a substantially U-shaped cross section, and a length between both opposing side surfaces of the storage case is formed to be substantially equal to an outer diameter of a gas generator or an inflator case. 4. The airbag device for a vehicle according to claim 1, wherein the elongated hole is formed from the side opposite to the opening of the storage case to the side of the mounting portion. 6. The container according to claim 1, wherein one end of the elongated hole formed in the storage case is bent and formed in an L-shape. An airbag device for a vehicle according to any one of claims 1 to 3.