JP3042255B2 - Automotive airbag mounting seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile airbag mounting seat.

[0002]

2. Description of the Related Art As this kind of technology, for example,
No. 0-49833. That is,
As a vehicle airbag mounting seat, a bracket having a bolt mounting hole is fixed to a seat frame constituting a seat together with a cushion material so as to surround a periphery of an airbag mounting plate, and bolts mounted on the bracket using the bolt mounting hole. , A nut and a washer are used to lock the end of the airbag cover and the end of sewing leather or sewing cloth.

[0003]

However, in such a vehicle airbag-equipped seat, the headrest is of a type integrated with the seatback. However, when the headrest is of a separate type or a retractable type, the airrest is not provided. When the airbag body of the bag module is inflated, its strength as a reaction surface is insufficient, and the airbag body cannot be held. Further, the rear impact of the seat back cannot be easily achieved. In view of the above, the present invention provides means for maintaining the strength as a reaction surface when the bag body of the airbag module is inflated, enabling the airbag body to be held, and easily achieving the rear impact of the seat back. It is intended to provide.

[0004]

As a seat for mounting an airbag for an automobile according to the present invention, an airbag module is mounted on a seatback, and an upper end of the seatback has
The left and right ends of a guard member that covers the upper surface of the airbag module and that is larger than the left-right width of the airbag module are fixed to the frame of the seat back.

[0005]

[Operation] According to this structure, when the rear body of the occupant of the rear seat moves to the front side at the time of a car collision or the like, and hits the inflated airbag body of the airbag module of the front seat by a collision sensor or the like, the structure is changed. The reaction force is applied to the guard member via the airbag body, but the guard member can keep the airbag body moving. In addition, even if the impact load due to the upper body of the occupant in the rear seat moves to apply to the rear seat, the guard member is supported at the upper end of the seat back so as to cover the upper surface of the airbag module. Will be less.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to FIGS. 1 to 6, an airbag mounting seat 1 for an automobile has an airbag module 3 mounted on a seatback 2, and an upper end of the seatback 2 covers an upper surface of the airbag module 3 and the airbag module 3. The left and right ends of the guard member 4 that are larger than the left and right widths of the bag module 3 are fixed to the back frame 5 of the seat back 2. The seat back 2 includes a seat back cushion 6 covering the back frame 5, a seat back garnish 7 covering a rear surface of the seat back cushion 6, a recess 8 at an upper end of the seat back cushion 6, and the seat back cushion 6. And a headrest 20 on the upper end of the headrest.

The back frame 5 includes a frame body 10 having a rectangular shape in a front view, and an end portion 11a fixed to the upper side portion of the frame body 10 by welding, and a central portion 11b behind the frame body 10. A first inflator frame 11 made of a substantially hollow pipe having an extending portion, a fixed portion 12a fixed to the upper end portion 10a of the frame main body 10 by welding, and a plane extending behind the fixed portion 12a. Part 12b and the first inflator frame 11
The slope 12 with the upper side forward and the lower side backward
c and the first inflator frame 11 has a lower end 1
2 d has a second inflator frame 12 in the form of a sheet metal fixed by welding, and a buffer 13 suspended from the frame main body 10.

The headrest 20 is fixedly mounted on a front side of a portion of the back frame 5 above the frame body 10 by a bolt and nut 22a, and a first headrest bracket 21 is fixed on the front side of the first headrest bracket 21. A second headrest bracket 22, and a headrest link 23 rotatably supported by the second headrest bracket 22, prevented from falling off by an E-ring 23 a, and formed largely curved upward.
A stay holder 25 in which a stay (not shown) of the headrest body 24 is slidably supported up and down;
6a is supported by the lower end 25a of the stay holder 25, and the lower end 26b is resiliently fitted to the spring 27. The third headrest bracket 26 resiliently engages with the headrest link 23. Body 28
And

The airbag module 3 is provided with the second
The claw portion 30a is locked in a notch hole 12f formed in the slope portion 12c of the inflator frame 12, and the other end portion is fixed by a bolt 30b screwed to a nut 12e also fixed to the slope portion 12c. An inflator 30, an airbag body 31 that can be inflated by gas blown from the inflator 30 at the time of a vehicle collision, and the like, and the airbag body 31 that covers the airbag body 31
And a cover 32 made of polyurethane foam to be accommodated in the opening 7a formed in the opening 7a.

The guard member 4 has a grip body 42 having a bolt insertion opening 41 fixed by a bolt 41a to a nut 29a of a guard bracket 29 fixed to the flat portion 12b of the second inflator frame 12 by welding. And a cushion 43 made of polyurethane foam secured to the grip body 42 by a double-sided adhesive tape (not shown) while covering the periphery of the surface of the grip body 42; A skin 44 made of polyvinyl chloride fixed to the buffer 43 with an adhesive tape (not shown) and a lower hole 41b formed around the bolt insertion opening 41 while covering the bolt insertion opening 41 are provided with legs. The lid 45 is engaged with the portion 45a. The lid 45 includes a core 46 made of a synthetic resin material such as an ABS resin, and a cushion made of a polyurethane foam that covers the surface of the core 46 and is fixed to the core 46 by a double-sided adhesive tape (not shown). Body 47
And a skin 48 made of polyvinyl chloride, which covers the periphery of the surface of the buffer 47 and is fixed to the buffer 47 by a double-sided adhesive tape (not shown).

According to this embodiment, as shown in FIG.
An occupant in the rear seat 51 (not shown) at the time of a collision of the automobile 50 or the like.
When the upper body moves to the front side and collides with the inflated airbag body 31 of the airbag module 3 of the vehicle airbag mounting seat 1 as the front seat 52 by a collision sensor (not shown) or the like, the reaction force is reduced. Airbag body 3
1, the airbag body 31 can be held by the guard member 4 so as not to move in an unexpected direction. Also, even if an impact load caused by the upper body of the occupant (not shown) of the rear seat 51 moves to apply to the vehicle airbag-equipped seat 1 as the front seat 52, the guard member 4 is attached to the upper end of the seat back 2. Since the airbag module 3 is supported so as to cover the upper surface, the impact value is small.

[0012]

As described above, according to the present invention, as an automobile airbag mounting seat, an airbag module is mounted on a seatbag, and an upper surface of the airbag module is provided at an upper end of the seatback. Since the left and right ends of the guard member that covers and is larger than the left and right width dimension of the airbag module are fixed to the back frame of the seat back, the occupant in the rear seat in the event of a collision of an automobile or the like. When the upper body moves to the front side and hits the inflated airbag body of the airbag module at the front seat by a collision sensor or the like, the reaction force is applied to the guard member via the airbag body, but the guard member Even when the main body can be moved and the impact load caused by the upper body of the rear occupant moves so as to apply to the rear seat, the guard member is kept in the seat. Wherein the upper portion of the click because it is supported so as to cover the upper surface of the airbag module, it has a practical benefit effect that the impact value is low.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing an embodiment of the present invention.

FIG. 2 is a side view of a main part around a frame main body and an inflator frame in FIG. 1;

FIG. 3 is a front view according to an arrow A in FIG. 2;

FIG. 4 is a sectional view in which a guard member is fixed to the frame body of FIG. 3;

FIG. 5 is a rear view according to arrow B of FIG. 1;

FIG. 6 is a schematic diagram of a side surface of an automobile.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Airbag installation seat for vehicles 2 Seat back 3 Airbag module 4 Guard member 5 Back frame 10 Frame main body 11 First inflator frame 11a End of first inflator frame 12 Second inflator frame 12b Flat portion of second inflator frame 12c Slope of second inflator frame

Continuation of the front page (56) References JP-A-4-348712 (JP, A) JP-A-49-92728 (JP, A) JP-A-6-278513 (JP, A) Jpn. , U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) B60R 21/16-21/32 B60N 2/00-2/54

Claims (2)

(57) [Claims] 1. An automobile airbag mounting seat having an airbag module mounted on a seatback, wherein an upper end portion of the seatback covers an upper surface of the airbag module and has a width smaller than a lateral width of the airbag module. The left and right ends of a large guard member are fixed to the frame of the seat back. 2. The back frame of the seat back,
A frame main body, a first inflator frame having an end fixed to an upper side portion of the frame main body and extending rearward from the frame main body, and extending rearward from an upper end of the frame main body The vehicle airbag mounting sheet according to claim 1, further comprising a second inflator frame having a flat portion and a slope portion facing the first inflator frame, the second inflator frame having a lower end fixed to the first inflator frame.