JP3355924B2 - Airbag device with horn switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag device provided on a steering wheel and having a planar horn switch.

[0002]

2. Description of the Related Art Conventionally, as an airbag device provided on a steering wheel of this type and provided with a planar horn switch, one described in Japanese Patent Application Laid-Open No. 6-305425 has been known.

[0003] The airbag device described in the above publication is disposed above a central boss of a steering wheel. The airbag device includes a folded airbag, an inflator that supplies gas for inflation to the airbag, a pad that covers the folded airbag, and a bag holder that holds the airbag inflator pad. , Was equipped. Further, the airbag device is configured such that a planar horn switch and a support plate that supports the horn switch from the lower surface side and is more rigid than the pad are disposed between the folded airbag and the pad. It had been.

The pad has been provided with a ceiling portion and a substantially cylindrical side wall portion which extends downward from the outer peripheral edge of the ceiling portion and is held by the bag holder. On the ceiling portion, a thin H-shaped thin portion to be broken when viewed from above is arranged around a portion surrounded by the side wall portion so as to open when the airbag is inflated.
There were two doors. These doors were arranged in front of and behind the steering wheel, and were to cover the folded airbag.

[0005] A support plate for supporting the horn switch is attached to the rear surface of the rear door by heat caulking. In addition, this heat staking is performed by inserting a plurality of locking projections extending from the door portion into predetermined holes of the support plate, swelling the ends of the locking projections by heat, and stopping the support plate undercut. This is an aspect of attaching to a door.

In such an airbag device, when the airbag is inflated, the portion of the pad that is to be broken around the door portion is broken,
The two doors were opened, and the airbag was projected from the opening of the door to greatly inflate.

[0007]

However, the conventional airbag apparatus is improved so that one door is provided on substantially the entire surface of the pad surrounded by the side wall portion so as to arrange a large planar horn switch. When a support plate supporting a planar horn switch is attached to the back surface of the door portion by heat staking, the following problem occurs.

That is, when the door is opened when the airbag is inflated, the door is extended by a greater tensile force and has a larger inertia than the two doors described in the above-mentioned publication. Force acts. As a result, since the support plate is more rigid than the pad and has less elongation, there is a possibility that the heat caulking portion to which the support plate is attached may be damaged when the airbag is inflated.

Therefore, a large door portion is provided on the ceiling of the pad, and a large planar horn switch cannot be arranged on the back surface of the large door portion.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide an airbag device capable of disposing a large door portion and a planar horn switch on a ceiling portion of a pad without any trouble. And

[0011]

An airbag device according to the present invention is an airbag that is folded and inflated at a predetermined time, a pad that covers the folded airbag, and a bag that holds the airbag and the pad. And two thin electrode plates having a large number of insulating properties between the folded airbag and the pad.
A horn arranged on a steering wheel, comprising: a planar horn switch separated by a spacer, and a support plate that supports the horn switch from the lower surface side and is more rigid than the pad. An airbag device including a switch, wherein the pad includes: a ceiling; and a substantially cylindrical side wall that extends downward from an outer peripheral edge of the ceiling and is held by the bag holder. A portion to be broken is disposed around substantially the entire surface of the portion that covers the folded airbag surrounded by the side wall portion, and is opened when the airbag is inflated, and a plurality of presses for pressing the horn switch. door portion where the use projection is disposed on the back side is disposed, and a support portion for supporting the horn switch of said support plate and said horn switch, is substantially the same shape and the door portion, Serial support plate, wherein together extending from the support portion includes a mounting leg along the side wall portion of the pad is attached to said bag holder by utilizing said mounting Tsukeashi, the door portion of the the support portion of the support plate pad A positioning concave portion and a positioning protrusion inserted into the positioning concave portion, wherein the positioning concave portion is engaged with the support portion without being attached to the door portion, and is formed in contact with each other. Support projections are formed at predetermined intervals on the support portion and the rear surface of the door portion , and further, the support portion of the support plate
However, on the mounting leg side, mounting of the hose switch
By inserting it into the hole and expanding it,
A locking projection that locks the switch, and is separated from the mounting leg.
At the outer peripheral edge, fit the outer peripheral edge of the horn switch.
With a mounting projection with a concave groove formed inside the base part
The horn switch has an outer peripheral edge that is recessed from the mounting projection.
It is fitted into the groove and is locked by the locking projection.
The support plate is attached to the upper surface of the support portion .

[0012]

In the airbag apparatus according to the present invention, when the airbag is inflated, the door portion of the pad ceiling is pushed through the support plate and the horn switch, and the portion to be broken is broken, and the door portion is broken. Is opened, and the airbag expands greatly.

At this time, the support portion of the support plate to which the horn switch is attached is not attached to the ceiling portion side of the pad extending at the time of breaking of the portion to be broken, but is attached to the bag holder via the mounting leg. The mounting leg is opened around the center of rotation without being damaged without being affected by the elongation of the door portion of the pad ceiling portion or the portion to be broken.

Therefore, in the airbag device according to the present invention, even if a large door portion is provided on the pad ceiling portion and a large planar horn switch is disposed on the back side of the door portion, there is no problem when the airbag is inflated. , The door can be opened.

In the airbag device according to the present invention,
The support portion of the support plate and the door portion of the pad are formed with positioning recesses and positioning protrusions that engage with each other, and are in contact with each other and are spaced apart from each other by a predetermined distance between the support portion and the back surface of the door portion. Are formed.

That is, since the positioning recesses and the positioning projections that engage with each other are formed in the support portion and the door portion, if the positioning projections are engaged with the positioning recesses, the horn switch on the support plate can be mounted. Even if the supporting portion is not attached to the door portion, the pressing projection for pressing the horn switch when the horn switch is operated can be accurately arranged above the planar horn switch. By the way, the planar horn switch is composed of a membrane switch, and this membrane switch is composed of two thin electrode plates separated by a large number of insulating spacers. The electrode plate cannot be brought into smooth contact with each other unless the part that is displaced from the part is pressed.Therefore, in order to operate the planar horn switch, the pressing projection on the door must be properly positioned above the planar horn switch. Must be placed in

Further, since the support portion and the door portion are formed with support protrusions which are in contact with each other and are spaced apart from each other by a predetermined distance between the support portion and the rear surface of the door portion, the horn switch is not operated when the horn switch is not operated.
Even if the pressing projection of the door does not press the horn switch and the folded airbag tries to restore and presses the support of the support plate toward the door, the horn switch can be prevented from operating.

The support plate for supporting the planar horn switch is connected to the bag holder.
Although the one described in Japanese Patent Application Laid-Open No. Hei 6-31664 is similar, the airbag device described in the above-mentioned publication breaks around the door around the ceiling of the pad when the airbag is inflated, as in the present invention. It does not break the planned part,
The inner cover itself, which serves as a support plate,
It breaks when the airbag is inflated. for that reason,
In the inner cover described in the above publication, a portion requiring rigidity for attaching and supporting the horn switch, a portion providing a breakable portion to be broken when the airbag is inflated, and a hinge opening when the airbag is inflated are further provided. It is necessary to provide the parts, and it takes a lot of man-hours to select the material of the inner cover and to set the dimensions so that the three properties can be exhibited. However, in the present invention, since it is not necessary to provide a portion to be broken on the support plate, the conditions of the support plate are reduced, and the selection and the setting of the dimensions of the material of the support plate do not require man-hours. Design flexibility can be increased.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

The airbag device 1 of the embodiment is shown in FIGS.
As shown in the figure, the steering wheel W is disposed above the central boss portion B and includes an airbag 2, an inflator 7, a pad 9, a bag holder 19, a horn switch 28, and a support plate 33. I have.

The airbag 2 has a circular opening 2a at the bottom.
Is folded and housed in the airbag device 1 as a substantially spherical bag shape having The inflator 7 supplies an inflation gas to the airbag 2, and includes a substantially cylindrical main body 7 a having a gas discharge port 7 b disposed at an upper portion thereof, and a main body 7 a.
And a substantially quadrangular annular flange portion 7c protruding from the outer periphery of.

The pad 9 is made of a thermoplastic elastomer such as olefin, and as shown in FIGS.
A ceiling portion 10 that covers the folded airbag 2, and a substantially rectangular cylindrical side wall portion 1 that extends downward from an outer peripheral edge of the ceiling portion 10.
7 are provided.

On substantially the entire surface of the ceiling section 10 surrounded by the side wall section 17, a door section 12 is provided which has a thin portion 11 to be broken around and is opened when the airbag 2 is inflated. The door portion 12 is formed so as to be surrounded by the to-be-broken portion 11 which is arranged in a substantially U shape when viewed from above, and the front side of the pad 9 is a hinge portion 10a when opened. This door part 12
The upper part of the folded airbag 2 is covered.

As shown in FIGS. 2 and 5, a plurality of pressing projections 13 for pressing when the horn switch 28 is operated are formed at predetermined positions on the back surface of the door portion 12.

Further, the hinge 1 is provided on the back of the door 12.
Positioning protrusions 14 are provided at two positions apart from the position 0a. Each positioning projection 14 has two projections 14
a, and a concave portion 14b between the convex portions 14a. The bottom surface of the concave portion 14b is supported by a support plate 3 described later.
Regulating surface 1 in contact with crosspiece 34b of supporting portion 34 of No. 3
4c.

Further, on the back surface of the door portion 12,
In the vicinity of 1, a plurality of support projections 15 that can abut on the vicinity of the outer peripheral edge of the support portion 34 of the support plate 33 are provided.

The support projections 15 and the regulation surfaces 14 described above are used.
“c” is provided for keeping a predetermined interval between the support portion 34 and the back surface of the door portion 12 so that the pressing projections 13 abut when not needed to prevent the horn switch 28 from operating.

The side wall 17 of the pad 9 covers the side of the folded airbag 2 and serves as a part for connecting the pad 9 to the bag holder 19. A plurality of locking holes 17a for inserting locking claws 22a extending from a later-described side wall 22 of a main body 20 of the bag holder 19 are formed at predetermined positions in the side wall portion 17.

The bag holder 19 is, as shown in FIG.
Each is composed of a main body 20 made of sheet metal and a holding plate 24.

The main body 20 has a substantially rectangular plate-like bottom wall 21.
And a side wall 2 extending downward from substantially the entire outer peripheral edge of the bottom wall 21.
2 is provided. In the center of the bottom wall 21,
An insertion hole 21a for inserting the main body 7a of the inflator 7 from below is formed. Locking claws 22a inserted and locked into locking holes 17a provided in the side wall portion 17 of the pad 9 are formed at predetermined positions on the side wall 22, and are used to attach the airbag device 1 to the steering wheel W. Are formed at predetermined positions.
Further, the outer peripheral surface of the side wall 22 is configured to abut substantially the entire inner peripheral surface of the side wall portion 17 of the pad 9 except for a portion that abuts on an inner peripheral side of a mounting leg 39 of the support plate 33 described later. ing.

The holding plate 24 includes a horizontal plate portion 25 having substantially the same shape as the bottom wall 21 of the main body 20, and a fitting portion 26 extending in a U-shaped cross section from substantially the entire outer periphery of the horizontal plate portion 25. It is configured. In the horizontal plate portion 25, an insertion hole 25a for inserting the main body 7a of the inflator 7 from below is formed corresponding to the insertion hole 21a of the bottom wall 21. The fitting portion 26
Outer peripheral wall 26a, inner peripheral wall 26b, and peripheral walls 26a and 26
b, each of the locking claws 22a extending from the side wall 22 of the main body 20 is connected to the pad 9
After being locked in the locking hole 17a provided in the side wall portion 17 of the air bag 2, the air bag 2 serves to press the side wall portion 17 so that the locking is not released when inflated.

The holding of the airbag 2 and the inflator 7 of the bag holder 19 composed of the main body 20 and the holding plate 24 is performed as follows.
This is performed using a substantially square annular sheet metal retainer 3. That is, the retainer 3 is provided with bolts (not shown) extending downward near the four corners.
Are arranged at the periphery of the opening 2a in the airbag 2 and the bolts of the retainer 3 are attached to the periphery of the airbag opening 2a, the periphery of the insertion hole 21a of the main body bottom wall 21, the insertion hole 25a of the holding plate horizontal plate 25. Of the airbag opening 2a, the periphery of the insertion hole 21a of the main body bottom wall 21, the periphery of the insertion hole 25a of the holding plate horizontal plate 25, Further, a through hole through which each bolt is inserted is formed in the square annular flange portion 7c of the inflator 7), and the bolts are nut-fastened to form the main body 20.
And the holding plate 24 are integrated to form the bag holder 19, and the integrated bag holder 19
, An airbag 2 and an inflator 7 are attached. The pad 9 is attached to the side wall portion 2 of the main body 20 before the pressing plate 24 is disposed at the time of attachment.
2, each locking hole 17 a of the side wall 17.
After the locking claw 22a of the side wall 22 is locked to the
The peripheral edge of the insertion hole 25a of the horizontal plate portion 25 at
Of the fitting portion 26
Is fitted to the side wall portion 17 and the side wall 22 so as to be sandwiched therebetween,
If a nut is screwed into each bolt of the retainer 3, it will be attached to the bag holder 19.

The horn switch 28 is composed of a large membrane switch having a shape corresponding to the door portion 12 as shown in FIGS. 1, 3, and 4, and this membrane switch has a large number of insulating properties (not shown). Two thin electrode plates 29 and 30 are vertically opposed to each other with a spacer interposed therebetween, and the protective films 31 cover the electrode plates 29 and 30. Each of the electrode plates 29 and 30
The doors 12 extend toward the hinge 10a, and lead wires 29a and 30a are connected to their ends. In addition, a support plate 33 is provided at four positions of the horn switch 28.
A mounting hole 28a through which a locking projection 35 of the support portion 34 described later is inserted is formed.

The support plate 33 is made of a synthetic resin such as an olefin-based thermoplastic elastomer which is more rigid than the pad 9. The support plate 34 is disposed on the lower surface of the horn switch 28 and has the horn switch 28 attached thereto. And mounting legs 39 extending downward from the side edge.

The support portion 34 is formed to have an outer shape substantially equal to that of the door portion 12, and a rib 34a for increasing rigidity is formed on the outer peripheral edge on the back surface side. Also, on the outer peripheral edge on the upper surface side, four locking projections 35 arranged on the mounting leg 39 side,
Two positioning recesses 36 are disposed on the rear side of the support portion 34 and interpose the beam portions 34b, respectively, and three mounting protrusions 37 are disposed on the rear side of the support portion 34.

Each of the locking projections 35 is a portion to be caulked when mounting the horn switch 28 to the support portion 34, and is inserted into the mounting hole 28a to melt the tip and swell.

Each positioning recess 36 is a portion into which the projection 14a of the positioning projection 14 of the pad door portion 12 is inserted. The positioning recess 36 is formed as a penetrated hole. Each of the pressing projections 13 of the portion 12 is properly arranged above a position of the horn switch 28 mounted on the support portion 34 at a position shifted from a spacer (not shown).

Each of the mounting projections 37 has a recess 37a formed inside the base portion, and these recesses 37a engage the outer peripheral edge of the horn switch 28.

At the lower end of the mounting leg 39, a bulging portion 39a bulging forward and backward is formed.
2 and the pad side wall portion 17 pressed by the outer peripheral wall 26a of the presser plate fitting portion 26, the portion is prevented from coming off, and becomes a portion where the support plate 33 is attached to the bag holder 19.

The assembling of the airbag device 1 will be described. First, the retainer 3 is disposed in the airbag 2 and bolts (not shown) of the retainer 3 are projected from the peripheral edge of the opening 2a, and the airbag 2 is folded. After being folded, the breakable strap 5 (see FIG. 2) is hooked on a bolt (not shown) of the retainer 3 so as to wrap the folded airbag 2 in order to prevent the folding.

The horn switch 28 is mounted on the upper surface of the support portion 34 of the support plate 33. In this mounting operation, the rear edge of the horn switch 28 is fitted into the concave groove 37a of each mounting projection 37, and each mounting hole 2
What is necessary is just to insert the locking projection 35 into the inside 8a and heat it.

Then, the support portion 34 of the support plate 33 to which the horn switch 28 is attached is arranged on the back side of the door portion 12 of the pad 9 so that each positioning projection 14 is inserted into the positioning recess 36 and the support plate 33 The mounting leg 39 is arranged along the inner peripheral surface on the front side of the pad side wall 17, and the bulging portion 39 a is arranged at the lower end surface of the side wall 17.

Thereafter, bolts (not shown) of the retainer 3 are inserted into the periphery of the insertion hole 21a in the main body 20 of the bag holder 19, and the folded airbag 2 is disposed on the bottom wall 21 of the main body 20 of the bag. The pad 9 on which the support plate 33 is disposed is placed from above, and the locking claws 22 a of the bag holder main body side wall 22 are locked in the respective locking holes 17 a of the pad side wall portion 17. At this time, the bulging portion 39 a at the lower end of the mounting leg 39 of the support plate 33 is arranged at the position of the lower end surface of the side wall 22. Also, each lead wire 29a.3 of the horn switch 28
Oa is projected from an insertion hole (not shown) formed in the bottom wall 21 of the bag holder body 20.

Next, the fitting portion 26 of the holding plate 24 of the bag holder 19 is connected to the pad side wall portion 17 and the bag holder body 2.
The holding plate 24 is arranged on the lower surface side of the main body 20 while the bolt (not shown) of the retainer 3 is inserted into the periphery of the insertion hole 25 a of the holding plate 24 while being fitted to the side wall 22 of the main body 20. At this time, each lead wire 29a of the horn switch 28
30a is made to protrude from a through hole (not shown) formed in the horizontal plate portion 25a of the bag holder holding plate 24.

When the main body 7a of the inflator 7 is inserted into the insertion holes 25a and 21a from below, bolts (not shown) extending from the retainer 3 are inserted into the inflator flange 7c, and nuts are screwed into the bolts. The airbag device 1 can be assembled.

After the airbag device 1 is assembled, the support portion 34 of the support plate 33 comes into contact with the pad door portion 12 in order to restore the folded airbag 2. Support projection 1
5 are formed, and a predetermined interval is provided between each pressing protrusion 13 of the door portion 12 and the horn switch 28.

Thereafter, the side wall 22 of the bag holder body 20
The airbag device 1 can be mounted on the steering wheel W by using the mounting hole (not shown) provided in the steering wheel W. The lead wires 29a and 30a of the horn switch 28 are connected to a predetermined horn switch operation circuit.

After the gas is discharged from the gas discharge port 7b of the inflator 7 after being mounted on the steering wheel W, the airbag 2 starts to expand. Then, via the support portion 34 of the support plate 33 and the horn switch 28,
The door part 12 of the pad ceiling part 10 is pushed by the airbag 2. Then, the to-be-ruptured portion 11 is broken, and as shown in FIG. 6, the door portion 12 opens around the hinge portion 10c as a rotation center,
The airbag 2 is greatly inflated from the opened opening.

At this time, the support portion 34 of the support plate 33 to which the horn switch 28 is attached is not attached to the door portion 12 of the pad ceiling portion 10 that extends when the breakable portion 11 is broken, but is attached to the mounting leg 39. It is attached to the main body side wall 22 of the bag holder 19 and the outer peripheral wall 26a of the presser plate via the pad holder 19, without being affected by the elongation of the door portion 12 and the rupture expected portion 11 of the pad ceiling portion 10 without being damaged. The leg 39 is opened around the upper portion of the leg 39 as a center of rotation.

Therefore, in the airbag device 1 of the embodiment, even if the large door portion 12 is provided on the pad ceiling portion 10 and the large planar horn switch 28 is disposed on the back side of the door portion 12, The door portion 12 can be opened without any trouble when the airbag is inflated.

In the airbag device 1 of the embodiment,
A plurality of positioning recesses 36 and positioning projections 14 that engage with each other are formed in the support portion 34 of the support plate 33 and the door portion 12 of the pad 9. Therefore, if the positioning projections 14 are engaged with the positioning recesses 36, the horn switch 28 can be operated when the horn switch 28 is operated, even if the support portion 34 of the support plate 33 to which the horn switch 28 is mounted is not mounted on the door 12. The pressing projection 13 to be pressed can be accurately arranged above the planar horn switch 28. Therefore, before the airbag 2 is inflated, if the door portion 12 of the pad 9 is pressed, the pressing projection 13 near the pressed portion will be pressed by the horn switch 2.
8 at a position shifted from the spacer (not shown).
Is brought into contact with the electrode plate 30, and the horn is smoothly operated.

And, of course, the support projections 15 and the regulating surfaces 14c and the cross-sections 34b are brought into contact with the support portions 34 and the door portion 12 such that the support portions 34 and the door portion 12 are spaced from each other by a predetermined distance. When the horn switch 28 is not operated, the pressing projection 13 of the door portion is
The horn switch 28 can be prevented from operating even if the folded airbag 2 presses the support portion 34 of the support plate 33 toward the door portion 12 in an attempt to recover without pressing the horn switch 28.

[0053]

Further, in the embodiment, the support plate 33
Of the main body 20 constituting the bag holder 19
Although the structure in which the side wall 22 and the outer peripheral wall 26a of the fitting portion of the holding plate 24 are prevented from coming off is shown, the holding plate 24 is not fixed by the not-shown bolts of the retainer 3, but is shown in FIG. Thus, the main body side wall 22 and the pad side wall 1
In the case where the rivet 41 is provided so as to penetrate the bag holder body 7 and is integrated with the bag holder body 20, the rivet 41 is used without providing the bulging portion 39a. 39 may be attached to the bag holder 19.

Further, in the embodiment, the case where the positioning projection 14 is provided on the back surface side of the door portion 12 and the positioning concave portion 36 is provided on the support portion 34 side of the support plate 33 is shown. A concave portion may be provided and a positioning protrusion may be provided on the support portion 34 side, or they may be provided by mixing them.

Further, in the embodiment, the support plate 33
The horn switch 28 is not operated unnecessarily by providing the support projection 15 on the back surface side of the door portion 12 so as to abut on the support portion 34, but the horn switch 28 must be operated except at a predetermined time. For example, on the support portion 34 side, or
Support projections may be provided on both the door 12 and the support 34.

[Brief description of the drawings]

FIG. 1 is a plan view of an airbag device according to the present invention.

FIG. 2 is a cross-sectional view taken along the line II-II of FIG.

FIG. 3 is a plan view of a support plate on which the horn switch of the embodiment is arranged.

FIG. 4 is a side view of a support plate on which the horn switch of the embodiment is arranged.

FIG. 5 is a bottom view of the pad of the embodiment.

FIG. 6 is a schematic cross-sectional view showing the airbag of the embodiment when inflated.

FIG. 7 is a cross-sectional view of another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Airbag apparatus, 2 ... Airbag, 9 ... Pad, 10 ... Ceiling part, 11 ... Expected breakage part, 12 ... Door part, 13 ... Pressing projection, 14 ... Positioning projection, 15 ... Supporting projection, 19 ... Bag Holder, 28: Horn switch, 33: Support plate, 34: Support portion, 35: Locking projection, 36: Positioning recess, 39: Mounting leg, W: Steering wheel.

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Shinichi Goto 1 Ochiai Ochiai, Kasuga-cho, Nishikasugai-gun, Aichi Prefecture Inside Toyoda Gosei Co., Ltd. (56) References JP-A-7-69163 (JP, A) 6-305425 (JP, A) Japanese Utility Model 7-5980 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B60R 21/20 B62D 1/04

Claims (1)

(57) [Claims] An airbag that is folded and inflated at a predetermined time, a pad that covers the folded airbag, a bag holder that holds the airbag and the pad, and the folded airbag. Between the and the pad, 2
Thin electrode plates are separated by a large number of insulating spacers
A planar horn switch formed by, is configured by arranged a support plate, a a rigid than said pad and supporting the horn switch from the lower side, with a horn switch which is located on the steering wheel An airbag device, wherein the pad includes a ceiling, and a substantially cylindrical side wall that extends downward from an outer peripheral edge of the ceiling and is held by the bag holder. A portion to be broken is disposed around the substantially entire surface covering the folded airbag surrounded by the portion, and is opened when the airbag is inflated, and a plurality of pressing projections for pressing the horn switch are provided on the back surface. door portion which is disposed on the side are arranged, and a support portion for supporting the horn switch of said support plate and said horn switch, is substantially the same shape and the door portion, before Symbol support A plate is provided with a mounting leg extending from the support portion and along a side wall portion of the pad, and is attached to the bag holder using the mounting leg, and a support portion of the support plate and a door portion of the pad are provided. Is
A positioning recess is formed in which the support portion engages with each other without being attached to the door portion, and a positioning protrusion inserted into the positioning recess is formed, and the support portion is brought into contact with each other. And a support protrusion at a predetermined interval is formed on the back surface of the door portion , and further, the support portion of the support plate is provided in a mounting hole of the hose switch on the mounting leg side.
By inserting and expanding, the horn switch
It comprises a locking projection for locking the, at the outer peripheral edge away from the attachment leg, the Honsui
With a groove formed inside the base to fit the outer edge of the switch
The horn switch is provided with a projection
The edge is fitted into the concave groove of the mounting projection, and the locking
An upper surface of the support portion of the support plate, which is locked by a protrusion.
An airbag device provided with a horn switch attached to an airbag.