JPH0524460U - Module mounting structure for air bag device - Google Patents

Abstract

(57) [Summary] [Purpose] When fixing a module to a bracket provided inside the instrument panel, adjust the position of the module in the vertical direction and fix it correctly positioned with respect to the instrument panel. . [Structure] A tubular positioning member 22 is supported by a weld nut 21 provided on a main body portion 16 of a bracket Bs so as to be vertically adjustable, and a stud bolt 14 planted on the lower surface of a module M is passed through the positioning member 22. And fix with nuts 23. By rotating the positioning member 22, the height of the module M supported by the main body 16 can be finely adjusted, and the module M can be fixed at a predetermined position with respect to the instrument panel.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a module mounting structure of an airbag device for mounting a bracket in a recess formed in an instrument panel and positioning and fixing the module in the bracket.

[0002]

[Prior Art]

 Conventionally, when an acceleration exceeding a certain value is detected due to a vehicle collision, the high-pressure gas inflates and deploys an airbag in the passenger compartment, and the cushioning action of this airbag protects an occupant from a secondary collision. Bag devices are known. Among such airbag devices, an airbag device for a passenger seat is generally mounted inside an instrument panel, and the airbag inflates and deploys into a vehicle compartment by pushing open a lid forming a part of the instrument panel. The airbag device includes a module formed by integrally assembling an inflator, a retainer case, an airbag, a lid and the like, and the module is bolted to a bracket provided in a recess of the instrument panel.

[0003]

[Problems to be solved by the device]

 By the way, when fixing the module of the airbag system to the bracket installed inside the instrument panel, the lid of the module did not fit correctly into the opening of the instrument panel due to a slight dimensional error in the bracket and instrument panel. If the module is forcibly bolted to the bracket, a gap will be created between the instrument panel and the lid, which will deteriorate the appearance and cause the bracket to be deformed.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a module fixing structure for an airbag device capable of fixing the module of the airbag device in a properly positioned state. ..

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a module mounting structure for an airbag device, wherein a bracket is provided in a recess formed in an instrument panel, and the module is positioned and fixed to the bracket. The first feature is that a positioning member is provided through which the bolt planted in is fixed. The positioning member is supported by the bracket so as to be positionally adjustable in the axial direction of the bolt.

Further, in addition to the above-mentioned first characteristic, the present invention has a second characteristic that the position of the positioning member is adjustable by screw means.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

1 to 5 show an embodiment of the present invention. FIG. 1 is a perspective view of a vehicle equipped with an air bag device, FIG. 2 is a two-direction arrow view of FIG. 1, and FIG. 3 is a sectional view taken along line 3-3 of FIG. 2, FIG. 4 is an enlarged view of part 4 of FIG. 3, and FIG. 5 is an exploded perspective view of a mounting portion of the module.

As shown in FIG. 1, a module M of this airbag apparatus is mounted inside an instrument panel P in front of a passenger seat of a vehicle, and an airbag is mounted on the module M and mounted on the instrument panel P. The lid L, which forms a part of the upper surface, is pushed open and inflated and deployed into the passenger compartment to restrain the passenger in the passenger seat and protect it from a secondary collision.

As shown in FIGS. 2 and 3, the module M is a cylindrical inflator 1 that ignites to generate a high-pressure gas upon collision of a vehicle, and a cup-shaped lower retainer case that internally supports the inflator 1. The upper retainer case 2 includes a lower retainer case 2, an upper retainer case 3 coupled to the lower retainer case 2, and an airbag 4 housed in a folded state inside the retainer cases 2 and 3. The opening is covered by a lid L that constitutes a part of the upper surface of the instrument panel P.

The instrument panel P is made by covering the surface of a core material 5 made of soft foamed resin with a soft thin skin, and a part of the upper surface and the lower surface of the lid L are outer skins 6 and 7 made of hard resin, respectively. To be covered. The instrument panel P is formed with a concave portion 8 for accommodating the module M, and the stepped portion 6 of the outer cover 6 constituting the upper opening thereof.₁The lid L of the module M is fitted to the. The lid L is the same as the instrument panel P in which the surface of a core material 9 made of soft foam resin is covered with a thin flexible skin, and a plurality of metal penetrating frames 10 and 11 inserted through the core are inserted into the lid L. The bolt 12 is fixed to the upper edge of the upper retainer case 2. The lid L has a thin portion 9 corresponding to the break of the reinforcing frames 10 and 11.₁And the thin portion 9 is formed by the pressure when the airbag 4 is inflated and deployed.₁The lid L is bent so that the bent portion 9 ₂ It bends upward from and is released.

Two stud bolts 14 and 15 are fixed downward to the two support plates 13 welded to the lower surface of the lower retainer case 2 of the module M, and the outer two of the stud bolts 14 and 15 temporarily support the module M. It is used as a stud bolt 14 for fixing, and the inner two are used as stud bolts 15 for finally fixing the module M.

As will be apparent with reference to FIG. 5 together, the module M is fixed by a temporary fixing bracket Bs and a main bracket Bm provided inside the instrument panel P.

The temporary fixing bracket Bs is provided with a main body 16 made of a metal plate bent in a U shape in a side view so as to cover the front and back of the module M, and an opening 16 ₁ is formed in the center thereof. The connecting plate 17 is fixed to the front edge of the connecting plate 17 with bolts 18. Then the temporary locking bracket Bs is fixed by self-tapping screws 19 to a boss portion ₇₁ formed on the outer skin 7 of the instrument panel P of the rear edge of the main body portion 16, connecting plate provided on the front edge 17 is fixed by tapping grayed screw 20 to the boss 7 ₂ formed on the outer skin 7.

As is apparent from FIG. 4, two weld nuts 21 are fixed to the bottom surface of the main body 16 of the temporary fixing bracket Bs, and tubular positioning members 22 are vertically attached to the weld nuts 21. The position can be adjusted and screwed together. Then, the outer stud bolt 14 inserted into the positioning member 22 from above is tightened and fixed by a nut 23.

As shown in FIGS. 2, 3, and 5, the main bracket Bm includes a main body portion 24 extending in the left-right direction of the vehicle body, and connecting members 25 and 26 are provided at the left end and the right end of the main body portion 24, respectively. Connecting members 29 and 30 for supporting the main bracket Bm to the vehicle body panel are provided at both ends of the support pipes 27 and 28 having the intermediate portions fixed thereto. A support member 32 having an L-shaped cross section is fixed to the center of the main body portion 24, through which the reinforcing pipe 31 is inserted, with two bolts 33 and a nut 34 penetrating a long hole 32 ₁ formed therein. Then, the two stud bolts 15 on the inner side of the module M pass through the bolt holes 32 ₂ formed on the upper surface of the support member 32 and are fixed by the nuts 35.

Next, the operation of the embodiment of the present invention having the above-mentioned configuration will be described.

When the sensor that detects the collision of the vehicle outputs the activation signal of the airbag device, the squib of the inflator 1 is activated and the propellant is ignited, and the airbag 4 that is supplied with the generated high-pressure combustion gas is generated. Starts to expand inside the retainer cases 2 and 3. When pressure is applied to the inner surface of the lid L due to the expansion of the air bag 4, the lid L breaks along the thin wall portion 9 ₁ and expands outwardly around the bent portion 9 ₂ and the air bag 4 Expands and expands into the passenger compartment from the opening formed by expanding the lid L.

Now, the mounting operation of the module M of the airbag device is performed in the following procedure.

The temporary fixing bracket Bs and the main bracket Bm are mounted in advance in the concave portion 8 of the instrument panel P, and the two inner stud bolts 15 and nuts 35 are used to support the lower surface of the module M in advance. The member 32 is fixed. Then, the module M is inserted into the recess 8 of the instrument panel P from the opening on the upper surface of the instrument panel P, and the two stud bolts 14 on the outside thereof are inserted into the positioning member 22 of the temporary fixing bracket Bs from above. While being fitted, the long hole 32 ₁ of the support member 32 is loosely fitted to the bolt 33 planted in the main body portion 24 of the main bracket Bm.

At this time, the lid L of the module M is not correctly fitted to the step portion 6 ₁ formed on the outer skin 6 of the instrument panel P due to the dimensional error of the temporary fixing bracket Bs and the dimensional error of the instrument panel P. In some cases, their relative positions may shift in the vertical direction. From this state, when the two positioning members 22 screwed into the weld nut 21 provided on the main body portion 16 of the temporary fixing bracket Bs are rotated, the stud bolt 14 inserted and supported by the positioning member 22 is inserted into the module M. With this, the lid L can be vertically moved, and the lid L can be correctly fitted to the step portion 6 ₁ of the instrument panel P. At this time, since the support member 32 fixed to the module M is loosely fitted to the bolt 33 of the main bracket Bm through the elongated hole 32 ₁ formed in the vertical direction, the vertical movement of the module M is hindered. There is nothing to do.

When the module M is positioned as described above, the two nuts 23 are screwed into the stud bolt 14 and tightened to temporarily fix the module M to the temporary fixing bracket Bs. Then, from this state, when the nut 34 is screwed into the two bolts 33 of the main bracket Bm and tightened, the module M is finally fixed to the main bracket Bm. Since the final fixing of the module M is performed in a state where the positioning and the temporary fixing of the module M by the temporary fixing bracket Bs are completed, the inconvenience that the lid L is not properly fitted to the step portion 6 ₁ of the instrument panel P may occur. It is possible to avoid inconveniences such as deformation of the main bracket Bm due to excessive tightening.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the present invention described in the scope of claims for utility model registration. It is possible to make small design changes.

For example, in the embodiment, the module M is temporarily fixed to the temporary bracket Bs and then finally fixed to the main bracket Bm. However, the temporary bracket Bs is eliminated and the module M is directly attached to the main bracket Bm. It can also be fixed. However, in that case, it goes without saying that the positioning member 22 must be provided on the main bracket Bm. Further, the weld nut 21 with which the positioning member 22 is screwed may be eliminated and a female screw may be directly formed on the main body portion 16.

[0025]

[Effect of the device]

 As described above, according to the first feature of the present invention, when the module is fixed to the bracket provided in the recess of the instrument panel, the positioning member through which the bolt planted in the module is inserted is attached to the bracket. Since the position adjustment is supported in the axial direction of the bolt, the module can be fixed to the bracket while being properly positioned with respect to the instrument panel.

According to the second feature of the present invention, since the positioning member is self-adjusting the position by the screw means, the module positioning work can be performed easily and surely.

[Brief description of drawings]

FIG. 1 is a perspective view of a vehicle equipped with an airbag device.

FIG. 2 is an enlarged view from the direction of the arrow in FIG.

3 is a sectional view taken along line 3-3 of FIG.

4 is an enlarged view of part 4 of FIG.

FIG. 5 is an exploded perspective view of a module mounting portion.

[Explanation of symbols]

 8: Recess 14: Stud bolt (bolt) 22: Positioning member Bs: Temporary bracket (bracket) M: Module P: Instrument panel

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Masanori Takakawa 1-4-1 Chuo, Wako City, Saitama Prefecture

Claims (2)

[Scope of utility model registration request] 1. A module mounting structure of an airbag device for mounting a bracket (Bs) on a recess (8) formed in an instrument panel (P) and positioning and fixing the module (M) on the bracket (Bs). The bracket (Bs) includes a positioning member (22) to which a bolt (14) implanted in the module (M) penetrates and is fixed, and the positioning member (22) with respect to the bracket (Bs). A module mounting structure for an airbag device, wherein the bolt (14) is supported so that its position can be adjusted in the axial direction. 2. The module mounting structure for an airbag apparatus according to claim 1, wherein the position of the positioning member (22) is adjustable by screw means.