JPH0687396A - Automobile instrument panel - Google Patents

Abstract

PURPOSE:To provide a deployment door in which an exposed foaming element arranged on the back periphery of the deployment door is hardened on the periphery of the forming type deployment door by synergistic effect of the foaming element between a core material and a skin and a foaming tape when the deployment door is molded to block an air bag bulging opening, especially when a foaming layer is foamed and formed. CONSTITUTION:For a deployment door 6 for an air bag with a foaming layer 12 and a skin 13 formed in sequence on a core material 11, a foaming tape 23 is provided on the back periphery of the deployment door 6, and it is impregnated with part of foaming resin to mold the foaming layer 12, so that the deployment door 6 can be obtained which has a hardened layer integrally formed by the foaming resin and the foaming tape 23 and prevented from separation and dispersion from the core material 11.

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, a core material 11 made of hard resin or metal, a foam layer 12 formed on the front side of the core material 11, and a front side of the foam layer 12 are formed. As shown in FIG. 2, the outer peripheral structure of the deployment door 6 is composed of the outer skin 13 to be adhered, and the foam 12 'at the end of the foam layer is exposed.

When the deployment door in such a state is about to be opened by receiving the inflation force of the airbag due to the explosive force of the detonator in the airbag unit 4, a part of the airbag that is inflated is However, there is a problem in that the foam 12 'comes into contact with the exposed foam 12' and peels off from the deployment door 6 by this contact force (see FIG. 3).

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and when molding a deployment door, particularly when foam-molding a foam layer, the deployment of the foam-molding die. By setting the foam tape at a location located on the peripheral edge of the back side of the ment door, and then by foam-molding the foam between the core material and the skin,
To provide an instrument panel for an automobile capable of obtaining a deployment door in which an exposed foam located at a peripheral edge of a rear side of a deployment door is cured by an additive action of the foam and a foam tape. is there.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on the embodiments shown in the drawings.

Since this embodiment is characterized by the structure of the deployment door 6 for closing the opening 5 for inflating the airbag formed in the instrument panel 2, the deployment will be described below. The manufacturing process of the door will be described.

In FIG. 4, reference numerals 21 and 22 denote foaming molds for making the deployment door 6. To make the deployment door 6 using the pair of foaming molds, first, one foaming mold is made. A core material 11 formed in advance is set on 21, and a urethane foam tape 23 is attached to the peripheral edge of the foaming mold 21 corresponding to the peripheral edge of the core material 11 set on the foaming mold 21. Next, the skin 13 formed in advance is set on the mold surface of the other foaming mold 22, and after the foaming molds 21 and 22 are closed,
A foamable resin is injected between the core material 11 and the skin 13 to foam-mold the foam layer 12.

A part of the foamable resin injected into the foam mold is
Since the foaming pressure causes the foamed urethane tape 23 to be press-fitted and impregnated into the foamed urethane tape 23, the foamable resin that has been foamed under pressure inside the urethane foam tape 23 is cured and formed.

A molded product thus foam-molded, that is, as shown in FIG. 5, is released from the deployment door 6 and is cured by the urethane foam tape 23 on the back side of the peripheral edge of the deployment door 6. Since the hardened portion is integrally formed, the rigidity of the completed foamed material on the back side of the peripheral edge portion of the deployment door 6 is enhanced.

Therefore, even if the inflated airbag comes into contact with the peripheral edge of the deployment door 6, the hardened layer formed on the peripheral edge of the rear side of the deployment door is peeled off or removed from the core 11. It is possible to provide an excellent deployment door without causing any damage.

[0013]

As described above, according to the present invention, in the deployment door 6 for an air bag in which the foam layer 12 and the skin 14 are formed in this order on the core material 11, the rear side peripheral portion of the deployment door 6 is provided. An automotive instrument in which a foam tape 23 is provided and a part of the foam resin for forming the foam layer 12 is impregnated into the foam tape 23 to integrally form a cured layer of the foam resin and the foam tape 23. Since it is a deployment panel, even if a contact impact force due to a bulging airbag or the like acts on the back side peripheral edge of the deployment door 6, the hardened layer may be peeled off or chipped from the core material 11. The advantage is that a deployment door with excellent safety can be provided.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a conventional instrument panel structure.

FIG. 2 is an enlarged view of a main part of a conventional deployment door.

FIG. 3 is an operation explanatory view of a conventional example.

FIG. 4 is an explanatory view of molding of the deployment door according to the embodiment of the present invention.

FIG. 5 is a structural explanatory view of the deployment door according to the embodiment of the present invention.

[Explanation of symbols]

 6 ... Deployment door 11 ... Core material 12 ... Foam layer 13 ... Skin 21 ... Foam type 22 ... Foam type 23 ... Foam urethane tape

Claims (1)

[Claims] 1. A deployment door (6) for an air bag, wherein a foam layer (12) and a skin (14) are formed on a core material (11) in this order, and a back side peripheral portion of the deployment door (6). A foam tape (23) is provided on the foam tape (23), and the foam layer (12) is attached to the foam tape (23).
An instrument panel for an automobile, characterized in that a part of a foaming resin for molding is impregnated with the foaming resin and a cured layer formed of a foam tape (23) are integrally formed.