JPH1044910A - Instrument panel integrated with air bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide invisible two functions of an air bag door, i.e., the surface decoration and the development performance in an instrument panel by setting the tear line of the prescribed shape and a separate air bag door on a back side of the instrument panel. SOLUTION: An air bag integrated instrument panel 1 is provided with an instrument panel 2 comprising the single integrated base material and an opening part 3 to pass an air bag to be inflated on the back side of a forward part of a front passenger seat of the instrument panel 2. The opening part 3 is covered by a separate air bag door 4. When the pressure is applied to the air bag door 4 in inflating the air bag, the pressure is transmitted to a tear line 5 provided on the back side of the instrument panel 2 on the side which is an outer circumferential edge of the air bag door 4 and not connected to a reinforcement part racket 11, and the air bag is torn.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an instrument panel integrated with an airbag, and more particularly, to an instrument panel disposed in front of a passenger seat, which is disposed around an opening formed in the instrument panel, and is developed around one end by an inflatable airbag. To an instrument panel integrated with an airbag.

[0002]

2. Description of the Related Art An airbag device is disposed behind an instrument panel to protect an occupant sitting in a passenger seat from sudden deceleration in a vehicle emergency. In the airbag device structure which is stored behind the instrument panel in front of the passenger seat, an opening is formed in the instrument panel to allow an inflating airbag to pass therethrough, and this opening is covered with an airbag door. It has become. When the airbag is inflated at the time of emergency start, the inflation pressure causes the airbag door to swing and open toward the occupant.

In these prior arts, the airbag door is manufactured as a separate part without being integrated with the instrument panel, and is combined with the instrument panel in a later process. Two-color molding in which the resin of the panel body is different is performed.

[0004]

However, the above prior art has the following problems. That is,. In the case where an airbag door as a separate part is set, the sense of unity with the instrument panel is impaired in appearance. . Due to the different materials in two-color molding,
Joints are formed in the different types of materials, and the sense of unity is impaired. . A resin material used for a conventional instrument panel cannot satisfy the required performance required for an airbag door.

The present invention has been accomplished as a result of intensive studies in view of the above-mentioned problems, and the conventional resin material for an instrument panel cannot satisfy the required performance of an airbag. It is an object of the present invention to provide an invisible airbag-integrated instrument panel in an instrument panel by dividing it into two, surface decoration and deployment performance.

[0006]

In order to achieve the above object, an airbag integrated instrument panel according to the first aspect of the present invention covers an opening formed in an instrument panel in front of a vehicle occupant's seat. In an airbag integrated instrument panel that is arranged and deployed about one end by an inflating airbag, a predetermined shape of a tear line and an airbag door of another part are set on the back of the instrument panel, and the separate part airbag is provided. An airbag-integrated instrument panel, wherein a door and an instrument panel are integrated by coupling.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a specific embodiment of an airbag integrated instrument panel according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of an airbag integrated instrument panel according to the present invention, FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1, and FIG. It is a perspective view which shows the state of.

As shown in FIGS. 1 and 2, an instrument panel 1 with an airbag includes an instrument panel 2 made of a single base material integrally formed by injection molding, and a front passenger seat of the instrument panel 2. An opening 3 for passing an inflating airbag is provided on the back side of the portion, and the opening 3 is formed so as to be covered by an airbag door 4 of another component.

The base material of the instrument panel 2 is as follows:
A polypropylene resin containing filler (PPC resin) reinforced with polypropylene, talc, mica, glass, or the like, modified PPO resin, ABS resin, etc.
The material of the airbag door 4 is preferably aluminum or iron such as SPCC.

The instrument panel 2 has a groove-like cleavage start line, ie, a tear line, for cleaving the base material of the instrument panel 2 when the airbag is inflated along the outer peripheral edge of the separate-part airbag door 4. Line 5 is provided. The tear line 5 is a portion having a lower strength than the surrounding portion and is provided as a thin portion having a predetermined shape. When the air bag is inflated, the airbag door 4 is opened along the tear line portion.

As shown in FIG. 3, the airbag door 4 is bent downward from a substantially rectangular flat plate 6 and one of the peripheral edges of the flat plate 6 (normally, the left side on the passenger seat side). A mounting piece 7 is provided. The flat plate 6 and the mounting piece 7 are provided with mounting holes 8 at predetermined intervals, respectively, and furthermore, the flat plate surface is provided with a concave portion 9 formed by bending for reinforcement.

The airbag door 4 has an opening 3
Is fixed to one side wall of a reinforcing bracket 11 composed of four side walls 10 by means of a connecting member 12 such as a rivet, a screw or a bolt via the mounting piece 7, and the other end piece is a measure for rigidity of the airbag door 4. Therefore, it is held in contact with the reinforcing bracket 11 as a contact portion. At the lower end of the reinforcing bracket 11, a rectangular mounting piece 13 having a mounting hole 15 is provided, and the mounting hole 15 is connected and fixed to a boss 14 holding the instrument panel 2 by a connecting tool. ing.

On the other hand, an instrument panel 2 is disposed above the airbag door 4, and the airbag door 4 and the instrument panel 2 are connected by the above-mentioned connecting tool. It is assumed to be zero. In addition, a cushioning material may be inserted into the contact portion between the airbag door 4 and the instrument panel 2 to prevent noise generation, and a difference in thermal contraction between the instrument panel 2 and the airbag 4 is taken into consideration. Then, the mounting hole 8 of the flat plate 6 of the airbag door 4 may be made into an elongated hole to be joined to the instrument panel 2 by heat caulking.

In the above embodiment, the instrument panel 2
Is a two-layer structure in which a skin layer made of a soft synthetic resin such as a vinyl chloride resin (PVC) or a thermoplastic olefin resin (TPO) is separately laminated on the surface of the base material. It goes without saying that the structure may be a structure, and even in this structure, the tear line is inserted into the base material layer as before.

FIGS. 4 and 5 show another embodiment of the airbag integrated instrument panel according to the present invention, in which the airbag door 4 is provided with a flat plate 6 and a mounting piece 7 at the center part. Two side walls of a reinforcing bracket 11 which is a double door type formed by two airbag doors 4 ′ and is provided with a tear line 5 on the back side of the central part of the instrument panel 2 and four side walls 10 forming an opening 3. To
It is the same as FIG. 1 except that it is fixed by the connecting tool 12 via the mounting piece 7.

Next, the operation of the airbag integrated instrument panel of the present invention will be described with reference to FIG. When pressure is applied to the airbag door 4 at the time of inflation of the airbag, the pressure is transmitted to the tear line 5 provided on the back surface of the instrument panel 2 on the outer peripheral edge of the airbag door 4 which is not connected to the reinforcing racket 11. Is cleaved.

[0017]

As described above, the instrument panel with an integrated airbag according to the present invention is provided with a tear line of a predetermined shape and an airbag door of another part on the back surface of the instrument panel. By integrating the instrument panel with the instrument panel, the function of the airbag door is divided into two parts: surface decoration and deployment performance. The surface decoration is integrally formed with the instrument panel, and the deployment performance is also improved. It is possible to cope with a separate part airbag door, and to provide an invisible airbag integrated instrument panel in the instrument panel.

[Brief description of the drawings]

FIG. 1 is a perspective view of an airbag-integrated instrument panel according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 is a perspective view showing a connection state between a separate part airbag door and a reinforcing bracket.

FIG. 4 is a view corresponding to FIG. 1, showing another embodiment according to the present invention.

FIG. 5 is a diagram corresponding to FIG. 3, showing another embodiment according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Instrument panel integrated with airbag 2 Instrument panel 3 Opening 4 Airbag door 5 Tear line 6 Flat panel 11 Reinforcement bracket

Claims (1)

[Claims] 1. An airbag-integrated instrument panel which is arranged over an opening formed in an instrument panel in front of a vehicle occupant's seat and is deployed around one end by an inflating airbag. An instrument panel integrated with an airbag, wherein a tear line of a predetermined shape and an airbag door of another component are set on the back surface, and the separate component airbag door and the instrument panel are integrated by coupling.