JPH0625059U - Car instrument panel - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] When the airbag is pushed by the inflation force of the airbag and opened by the pushing force of the air bag grid, the pushing force easily breaks the foam layer due to the protrusion of the ridge. , Prevents generation of scattered materials due to tearing of the foam layer. [Structure] When the air bag grid 26 is expanded (opened), the foam layer 23 and the outer skin 24 are sharply cut (broken) along the rim of the opening provided in the core material so that the foam layer 23 is formed on the core material. Protrusions 29 that bite into the inside are provided, and when the air bag grid 26 is deployed, the foam layer 23 is sharply cut (broken) in correspondence with the edge of the air bag grid 26, and scattered objects are scattered. Occurrence can be prevented and safety can be improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a seamless type instrument panel in which an airbag device is installed in an instrument panel of a vehicle, particularly in a passenger side instrument panel of a passenger car.

[0002]

[Prior art]

 A conventional instrument panel structure of this type is as shown in FIG. That is, 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 a welding step, and the bracket 3 has an instrument part. An airbag unit 4 housed inside the flannel 2 is held.

On the outside of the airbag unit 4, a supporting arm 7 that supports an airbag bag 6 that closes an airbag inflation opening 5 formed in the instrument panel 2, and the airbag bag 6 are provided. The locking portion 8 for holding the closed state is attached, and the detonator in the airbag unit 4 explodes when an abnormal impact force is detected due to, for example, a collision of the vehicle body, and the airbag is inflated. The inflated airbag pushes up the air bag grid 6 as shown by the chain line, and is inflated (jumped) toward the occupant through the opening for safety of the occupant.

However, in the instrument panel having such a structure, the air bag grid 6 for closing the opening 5 for inflating the airbag is provided. The structure of the air bag grid 6 is metal. The air bag grid core material 9 is made of, and the air bag grid pad 10 is attached to the surface of the air bag grid core material 9. The air bag grid pad 10 is formed on the surface of the instrument panel 2. Since it is a separate member from the instrument panel pad 11 that is adhered, a boundary (parting line) 12 is provided between the air bag grid pad 10 and the instrument panel pad 11 as shown in FIG. However, there was a problem that the appearance of the entire instrument panel was impaired.

In order to solve this problem, therefore, as shown in FIG. 3, an instrument panel core 22 and an outer skin 24, and an insulative foam layer 23 formed integrally between the inner skin and the outer skin. In the ment panel 21, an opening 25 for inflating the airbag is provided in a part of the core member 22, and an air bag grid member 26 that can be opened in a single opening is fixed to the opening by a mounting screw 27. A seamless instrument panel having a cutout groove 28 for breaking is provided on the back side of the outer skin 24.

[0006]

[Problems to be solved by the device]

 However, in the seamless instrument panel which is a prior art example, a cut mark 28 is formed on the surface of the outer skin 24, and the appearance is still unsatisfactory. Moreover, the number of processing steps is increased and the productivity and economy are improved. It was lacking. Further, when the air bag grid 26 is about to be deployed by receiving the expansion force of the airbag due to the explosive force of the detonator in the airbag unit, the foam layer 23 and the outer skin 24 are torn and open. There is a problem that the foamed layer 23 and the like in the covered portion scatters due to the deploying force, which is harmful to passengers.

[0007]

[Means for Solving the Problems]

 The present invention has been made in view of such a conventional problem. When the air bag grid is deployed (opened), the foam layer and the skin are sharply cut along the edge of the opening provided in the core material. By providing a slit in the foam layer so that it is (broken), the foam layer is sharply cut (broken) in correspondence with the edge of the airbag lid during the operation when the airbag bag is deployed. It is to provide a highly safe instrument panel that does not generate scattered objects.

[0008]

[Embodiment] The present invention will be described in detail below based on an embodiment shown in the drawings. The same member as the structure of this embodiment and the structure described in the preceding example shown in FIG. 3 is used in a conventional example. The same reference numerals are assigned and the structural description of the same structural member is omitted.

That is, in FIG. 4 to FIG. 6, an opening portion 25 for inflating an airbag is formed in advance in the core member 22 which is to form the instrument panel. 6, three sides of the opening 25, that is, the other edges (b), (c), (d) excluding the edge (a) fixing the air bag grid member 26 with the mounting screws 27. A slit 29 is formed in advance along this line, and a sealing tape 30 for preventing the leakage of the foaming agent is attached to the slit 29 before the core material 22 is set in the foaming mold to close the slit 29. It is a thing.

After the core material 22 thus formed is set in one foaming mold and the skin 24 is set in the other foaming mold, the foam layer 23 is formed between the core material 22 and the skin 24. The instrument panel is formed and the instrument panel is molded. After the instrument panel is released from the mold, a notch 32 is made in the foam layer 23 by the cutter 31 along the slit 29 to obtain a product.

Therefore, according to this embodiment, since the foam layer 23 is provided with the notch 32 formed along the airbag inflation opening 25 provided in the core member 22, the airbag is inflated. Then, when the instrument panel is opened, the foaming layer 23 is broken along the notch 32 due to the swelling output thereof, so that it is possible to effectively prevent the generation of scattered objects due to the tearing of the foaming layer 23 as in the conventional case. As a result, passenger safety can be further enhanced.

In the embodiment shown in FIG. 7 and FIG. 8, a slit 29, which is formed in advance on the core material 22 and is similar to the above-described embodiment, is temporarily fitted with a retainer 33 having a substantially blade-shaped cross section. After molding an instrument panel using a foaming mold in which a core material 22 and a skin similar to the above are set, this instrument panel is released, and if the holder 33 is removed from the instrument panel, as shown in FIG. The groove 34 is formed in the foam layer 23.

Therefore, the groove 34 of this embodiment also eliminates the generation of scattered matter due to the tear of the foam layer when the instrument panel is opened when the airbag is inflated.

Therefore, according to this embodiment, the work of taping the slits 29 formed in the core material 22 and the cutting work by the cutter 31 can be omitted, so that the economical efficiency can be improved as compared with the embodiment. There are features.

[0015]

[Effect of device]

 As described above, the present invention provides an instrument panel in which the foam layer 23 and the skin 24 are layered in this order on the core material 22, and the core material 22 is provided with the opening 25 for inflating the airbag. Since it is an instrument panel in which the notch 32 or the groove 34 is formed in the foam layer 23 corresponding to the peripheral edge of the opening 25, according to this, when the airbag is inflated, the foaming is caused by the inflating output. Since the layer 23 is ruptured along the notch 32 or the groove 34, it is possible to effectively prevent the generation of scattered objects due to the tear of the foam layer 23 when the airbag is inflated, as in the conventional case. The effect that the safety can be further enhanced is obtained.

[Brief description of drawings]

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

FIG. 2 is an explanatory plan view of FIG.

FIG. 3 is a sectional view showing an instrument panel of a prior art example.

FIG. 4 is a cross-sectional view of an essential part of the embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a state in which a foam layer according to an embodiment of the present invention is cut.

FIG. 6 is a bottom view of FIG.

FIG. 7 is a cross-sectional view of an essential part showing another embodiment of the present invention.

FIG. 8 is a cross-sectional view showing a groove forming state according to another embodiment of the present invention.

[Explanation of symbols]

 22 ... Instrument panel core 23 ... Foam layer 24 ... Skin 25 ... Opening 26 ... Air bag grid member 27 ... Mounting screw 28 ... Notch groove 29 ... Slit 30 ... Seal tape 31 ... Cutter 32 ... Notch 33 ... Arrest 34 ... groove

Claims (1)

[Scope of utility model registration request] 1. A foam layer (23) and a skin (24) are layered on a core material (22) in this order, and an opening (25) for inflating an airbag is provided in the core material (22). The instrument panel for automobiles, wherein the foam layer (23) is provided with a cut (32) or a groove (34) corresponding to the peripheral edge of the opening (25). .