JPH0687397A - Automobile instrument panel - Google Patents

Abstract

PURPOSE:To prevent damage to a front glass and limited development of an air bag caused by opening of deployment door when the bag is operated by an instrument panel containing the air bag. CONSTITUTION:A part of a core material 12 constituting a deployment door 11 is provided with a weak portion 17 to decrease the strength of the door so that the deployment door when the door hits front glass 10 is placed in its opening action to absorb contact impact at the weak portion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an instrument panel in which an air bag device is installed in an instrument panel of an automobile, particularly in an instrument panel on the passenger side of a passenger car.

[0002]

2. Description of the Related Art A conventional instrument panel structure of this type is shown in FIG. Ie 1
Is a steering member arranged on the back side of the instrument panel 2, a bracket 3 is fixed to the steering member 1 by welding means, and the bracket 3 is housed inside the instrument panel 2. The airbag unit 4 is held.

On the outside of the airbag unit 4, a support arm 7 for supporting a deployment door 6 for closing an airbag inflation opening 5 formed in the instrument panel 2, and a deployment door 6 therefor. The locking portion 8 for holding the closed state is attached, and the detonator in the airbag unit 4 explodes due to the detection of an abnormal impact force due to, for example, a collision of the vehicle body and inflates the airbag. The inflated airbag pushes up the deployment door 6 as shown by the chain line with the hinge portion 9 as a boundary, and is inflated (jumped) toward the occupant from the opening to ensure the occupant's safety. .

[0004]

However, in the instrument panel having such a structure, the deployment door 6 for closing the opening 5 for inflating the airbag is provided. In the structure of the conventional airbag deployment door 6, when the deployment door 6 is plastically deformed by the inflation output when the airbag is inflated and opened toward the upper side of the instrument panel 2, The tip of the deployment door 6 comes into contact with the windshield 10, and the reaction of the deployment door 6 prevents the deployment of the bag and damages the windshield 10. In order to solve this problem, it has been considered to reduce the size of the door (size in the vehicle front-rear direction), but the bag bulging portion 5 of the instrument panel 2 is narrowed, which hinders bag deployment. There was a problem that it would end up.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art. A fragile portion that reduces the door strength is provided in a part of the core material that constitutes the deployment door. An instrument capable of eliminating the above-mentioned problem by providing the opening operation of the deployment door and absorbing the contact impact force when the deployment door comes into contact with the windshield with the fragile portion. To provide a panel.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on the embodiments shown in the drawings. The same parts as the structure of this embodiment and the structure described in the conventional example are designated by the reference numerals used in the conventional example. Then, the structural description of the same structural part is omitted.

That is, the gist of the present invention is characterized by the structure of the deployment door 11, and the other structure is the same as the conventional example.

2 and 3, the deployment door 11 includes a core 12 made of a hard resin or a metal plate, a foam layer 13 formed on the front side of the core 12, and a surface of the foam layer 13. The outer peripheral surface of the core member 12 is formed on the outer peripheral surface of the core member 12. The hinge member 15 is formed at one end of the core member 12 and the tip end 16 that is the other end of the hinge member 15 is substantially intermediate. In addition, the slit 1 that is substantially parallel to the hinge portion 15
7 is provided, and the core 12 is provided with a fragile portion by the slit 17.

In this way, the core material 12 of the deployment door 11 is provided with the fragile portion by the slit 17 which is substantially parallel to the hinge portion 15, so that the deployment door is inflated when the airbag device operates. 11 receives the pushing force from the inside, and receives the hinge portion 15
Plastically deforms, and the opening 5 opens. At this time, the front edge 16 of the deployment door 11 is aligned with the windshield 10.
The core material 12 comes into contact with the surface, but the impact force at this contact causes
The fragile portion provided at the end is bent and deformed, and the fragile portion absorbs the impact force with the windshield 10, that is, the kinetic energy of the deployment door, whereby the deployment door 11 is repelled by the windshield. It is possible to prevent accidents such as windshield damage and windshield damage.

In the above embodiment, the deployment door 1
Although the fragile portion provided in the core material 12 of No. 1 was formed by the slit, the present invention is not limited to this, and for example, FIGS. 4, 5, and 6,
As shown in FIG. 5, the fragile portion may be formed by the bead 18 having the convex or concave lines. Also in this example,
Although the beads are arranged in a continuous one line, a plurality of beads may be provided in a plurality of lines or discontinuously.

[0011]

As described above, according to the present invention, in the deployment door 11 for an air bag in which the foam layer 13 and the skin 14 are formed in this order on the core material 11, the core material 12 is formed at one side edge. Hinge portion 15 and the opposite end edge 16
Since the instrument panel is provided with a fragile portion 17 or 18 that is formed in a direction substantially parallel to the hinge portion 15 between and, according to this, the fragile portion provided in the core member 12 allows the deployment to be performed. When the door is opened, the impact force with the windshield 10, that is, the kinetic energy of the deployment door is absorbed, which causes the deployment door 11 to bounce off the windshield or damage the windshield. The effect that it can be prevented is obtained.

[Brief description of drawings]

FIG. 1 is a structural explanatory view showing an instrument panel of a conventional example.

FIG. 2 is a structural explanatory view showing an instrument panel of an embodiment of the present invention.

FIG. 3 is a perspective view showing a door core material according to an embodiment of the present invention.

FIG. 4 is a perspective view showing a door core material according to another embodiment of the present invention.

FIG. 5 is an explanatory diagram of a fragile portion according to the embodiment of the present invention.

FIG. 6 is an explanatory diagram of a fragile portion according to the embodiment of the present invention.

[Explanation of symbols]

 11 ... Deployment door 12 ... Core material 13 ... Foam layer 14 ... Skin 15 ... Hinge part 16 ... Tip edge 17 ... Slit 18 ... Bead

Claims (1)

[Claims] 1. A deployment door (11) for an air bag, wherein a foam layer (13) and a skin (14) are formed in this order on a core material (11), and one side edge of the core material (12). A fragile portion (17) or (18) formed in a direction substantially parallel to the hinge portion (15) is provided between the hinge portion (15) formed on the above and the opposite end edge (16). An instrument panel for automobiles, which is characterized by that.