JPS6232925Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an airbag device for an automobile, and more particularly to an airbag device for an automobile in which a reaction plate for storing an airbag is improved.

Conventionally, as shown in FIG. 1, an air bag ejecting opening 2 is formed in an instrument panel 1 facing a seated passenger, and the air bag ejecting opening 2 is
A box-shaped reaction plate 4 is disposed behind the airbag and stores the folded airbag 3 therein. There is an air bag device for an automobile which has an air bag door 5 which is pushed open by the air bag door 5 to enable the air bag 3 to be deployed in front of the occupant.

The conventional automobile air bag device shown in FIG.
A is tightened and fixed to the lower end edge 5A of the air bag door 5 by an insert 6, and the upper end 4B
is instrument panel reinforcement 7
The lower end of the air bag door is tightened and fixed by a bolt 8 and a nut 9 at a position on the back side of the upper edge 5B of the air bag door.

Reference numeral 10 in the figure indicates a gas generator for generating high-pressure gas and thereby deploying the air bag 3 when an impact occurs.

This air bag device for automobiles generates high pressure gas from a gas generator 10 when an impact occurs.
As a result, when the air bag 3 is inflated, the air bag door 5 is pushed from inside and deformed, and at this time, the upper edge 5B slips out from the back side of the upper edge of the air bag ejection opening and folds around the lower edge 5A. The air bag 3 is bent open so that the air bag 3 pops out from the air bag ejection opening 2 and is deployed in front of the seated occupant.

At this time, the upper end 4 of the reaction plate 4
Since there is a gap S between the air bag 3 and the upper edge 5B of the air bag door 5, when the air bag 3 is deployed, it enters the gap S and gets caught on the air bag door trim 11 around the air bag ejection opening 2. Furthermore, the air bag 3 may peel off the air bag door trim 11 and get caught on the reinforcing insert 12 inside, which may cause damage or prevent stable deployment. There was a problem.

This invention was made in view of the above-mentioned conventional problems, and the purpose is to provide an air bag device for automobiles that can stably deploy the air bag without damaging the air bag when the air bag is deployed. shall be.

This invention consists of an airbag ejection opening formed in an instrument panel facing a seated passenger, and a reinforcement that is placed within the periphery of the airbag ejection opening, including at least the upper end and both ends in the vehicle body width direction, to reinforce the airbag ejection opening. a box-shaped reaction plate disposed behind the ejecting opening and storing a folded air bag therein; When deployed,
In an air bag device for an automobile having an air bag door that is pushed open by this and allows the air bag to be deployed to the front of the occupant, the upper edge of the reaction plate and both side edges in the width direction of the vehicle body are brought close to the back surface of the air bag door. , a flange portion bent outward is formed, and the inner end of the flange portion is located inward than the inner surface of the air bag ejection opening, and the flange portion of the reaction plate and the peripheral edge of the air bag door are The reinforcing insert is extended close to the rear side of the peripheral edge of the air bag ejecting opening, and the extending portion, the flange portion, and the reinforcing insert for the peripheral edge of the air bag ejecting opening are viewed from the front side of the instrument panel. The above objective is achieved by partially overlapping each other.

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, the same or corresponding parts as those of the conventional automobile airbag device shown in FIG.

As shown in FIGS. 2 to 5, this embodiment includes an air bag ejecting opening 2 formed in an instrument panel 1 facing a seated passenger, and an air bag disposed behind the air bag ejecting opening 2. There is also a box-shaped reaction plate 14 that stores the folded air bag 3 inside, and is arranged to close the air bag ejection opening 2, and is pushed open by this when the air bag 3 is deployed. In an airbag device for an automobile having an airbag door 5 that allows the airbag 3 to be deployed in front of a passenger, a flange portion that brings the upper end and both side ends of the reaction plate 14 close to the back surface of the airbag door 5 and bends outward. 14B and 14C, and the inner end of the flange portion is located inward from the inner surface 2A of the air bag ejection opening 2.

That is, in the vertical direction, there is a symbol A in FIG.
The inner end of the flange portion 14B is arranged to protrude inwardly from the inner surface 2A of the air bag ejection opening 2 in the range indicated by , and in the lateral direction, the inner end is arranged in the range indicated by the symbol B in FIG. The inner end of the flange portion 14C is arranged to protrude inward from the inner surface 2A of the air bag ejection opening 2.

Further, the flange portion 14B formed at the upper end edge of the reaction plate 14, the flange portions 14C formed at both side edges in the vehicle body width direction of the reaction plate 14, and the upper end edge and both side edge portions 5C of the air bag door 5. , the periphery of the air bag ejection opening 2, that is, the air bag door trim 1
The reinforcing insert 12 of the airbag door trim 11 is extended close to the back side of the instrument panel 1, and the extending portion and the reinforcing insert 12 of the air bag door trim 11 are partially overlapped when viewed from the front side of the instrument panel 1. It is located.

That is, in the vertical direction, the reaction plate 14 is in the range indicated by the symbol C in FIG.
The flange portion 14B formed on the upper end edge and the reinforcing insert 12 of the air bag door trim 11 are arranged to overlap each other, and a fifth
The flange portions 14C formed on both sides of the reaction plate 14 in the width direction of the vehicle body and the reinforcing inserts 12 of the airbag door trim 11 are arranged in an overlapping manner within the range indicated by the symbol D in the figure. be.

In this embodiment, there is no gap S between the reaction plate 14 and the air bag door 5;
Furthermore, the flange portion 1 of the reaction plate 14
Since the inner ends of 4B and 14C are arranged to protrude inward from the inner surface 2A of the air bag ejection opening 2, the air bag 3 does not enter the gap between the reaction plate 14 and the air bag door 5 when deployed, and the air bag It has the advantage that it does not get caught on the bag door trim 11 and can therefore be deployed stably.

Further, the upper end edge 5B, both side edges 5C of the air bag door 5, and the flange portions 14B, 14C of the reaction plate 14 are arranged so that the reinforcing insert 12 of the air bag door trim 11 is partially overlapped with the reinforcing insert 12 of the air bag door trim 11. Therefore, the air bag door 5 has a flange portion 1 with high rigidity at its peripheral edge.
4B, 14C and the reinforcing insert 12, which has the advantage that the air bag door 5 can be supported more stably.

Furthermore, in this embodiment, the air bag door 5
However, the airbag door trim 11 and flange portion 14
Since they are placed close together between B and 14C,
It also has the advantage of being stably supported.

In this embodiment, the air bag door 5
The lower edge 5A of the bolt 13 and nut 15
The lower end 4A of the reaction plate 14 is fixed to the lower end 4A of the reaction plate 14 by a
It may also be fixed via the insert 6.

Since the present invention is constructed as described above, the air bag will not be damaged when it is deployed, and the air bag will not be damaged.
Moreover, it has excellent effects in that it can be stably expanded and the airbag door can be stably supported.

[Brief explanation of the drawing]

Fig. 1 is a schematic sectional view showing a conventional air bag device for an automobile, Fig. 2 is a perspective view showing the appearance of an embodiment of the air bag device for an automobile according to the present invention, and Fig. 3 is a reaction plate in the same embodiment. FIG. 4 is an enlarged sectional view taken along the - line in FIG. 2, and FIG. 5 is an enlarged sectional view taken along the - line in FIG. 2. S...Gap, 1...Instrument panel,
2... Air bag ejection opening, 2A... Inner surface, 3
...Airbag, 5...Airbag door, 5B...
...Lower end edge, 5C...Both side edges, 7...Instrument panel reinforcement, 10...Gas generator, 11...Air bag door trim, 12...Reinforcement insert, 14...Reaction plate, 14B, 14C...flange part.

Claims (1)

[Scope of utility model registration request] An air bag ejecting opening formed in an instrument panel facing a seated occupant, and reinforcing inserts arranged within and reinforcing the peripheral edge of the air bag ejecting opening, including at least the upper end and both ends in the width direction of the vehicle body; A box-shaped reaction plate is arranged behind the air bag ejection opening and stores the folded air bag inside; An air bag device for an automobile has an air bag door that is pushed open by a driver and allows the air bag to be deployed in front of an occupant. A flange portion is formed that bends in the opposite direction, and the inner end of the flange portion is positioned inward than the inner surface of the air bag ejection opening, and the flange portion of the reaction plate and the peripheral edge of the air bag door are bent toward the air bag ejection opening. The extending portion, the flange portion, and the reinforcing insert of the air bag ejecting opening periphery are partially extended toward the rear surface side of the outlet opening periphery, and the extending portion, the flange portion, and the reinforcing insert of the air bag ejecting opening periphery are An air bag device for an automobile characterized by overlapping the following.