JPH0542857A - Air bag lid structure - Google Patents

Abstract

PURPOSE:To obviate the work of installing an air bag lid and to secure a smooth opening mode. CONSTITUTION:An air bag main body 13 having an expandable air bag is disposed inside an instrument panel 1 molded with the surface of a foaming layer 7 covered by skin 9 and an air bag springing opening peripheral edge 29 is formed within the instrument panel 1 opposite to the air bag main body 13 by a soft member 31 which forms a U-shaped slit through at least the skin 9 by means of the pushing force of the air bag during expansion while leaving one side serving as a hinge portion 33 unchanged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air bag grid structure.

[0002]

2. Description of the Related Art Conventionally, for example, an airbag device is known as a means for protecting an occupant in an emergency such as a collision. In this airbag device, for example, an airbag panel is provided on an instrument panel on the passenger side, and an airbag body is disposed inside the airbag panel. The airbag in the airbag body has a structure that pushes up the airbag bag and inflates greatly in an emergency such as a collision.

[0003]

As described above, since the air bag grid rotates upward due to the deployment of the air bag, the air bag grid is attached to the instrument panel as described in, for example, Japanese Utility Model Laid-Open No. 25347/1990. It is installed separately and has a structure that opens when the airbag is deployed.

This air bag grid is not desirable in terms of design and appearance because it is separately provided on the instrument panel. For this purpose, for example, as described in Japanese Utility Model Laid-Open No. 63-101255, the instrument panel and the lid are integrally molded to form a thin airbag peripheral edge for the airbag, and the airbag is deployed. It is known that the peripheral edge of the airbag ejection opening is torn by the pressing force at that time and the airbag is ejected to the outside.

However, since the above-mentioned means is designed so that the peripheral edge of the air bag ejection opening is torn, in the instrument panel whose surface is covered with the skin, the air bag is left unbroken from the air bag. The above means cannot be adopted because it is not possible to identify the opening that pops out. In particular, in recent years, the need for high-class oriented products has increased, and in the case of instrument panels, the surface of the instrument panel is covered and molded to improve the appearance quality.

In view of the above circumstances, the present invention has been devised in view of the above circumstances, and an air bag grid structure capable of obtaining an accurate airbag deployment mode even in an instrument panel covered and molded with a skin. Is intended to provide.

[0007]

In order to achieve the above object, according to the present invention, an airbag having a deployable airbag inside an instrument panel in which the surface of a foam layer is covered and molded with a skin. A flexible member in which a main body is disposed, and a U-shaped tear is formed in at least the outer skin, leaving one side serving as a hinge portion due to a pressing force when the airbag is deployed, in the instrument panel facing the airbag main body. Thereby forming a peripheral edge of the airbag ejection opening.

[0008]

According to such an air bag grid, since the air bag grid is formed integrally with the instrument panel, the appearance quality can be improved, and the work of assembling the air bag grid is unnecessary.

On the other hand, in the event of an emergency at the time of a collision, the airbag deploys and presses the periphery of the airbag ejection opening. As a result, the outer skin is torn in a U shape by the soft member forming the airbag ejection opening peripheral edge, and the outer skin can smoothly rotate outward with the hinge portion as a fulcrum.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings of FIGS.

Reference numeral 1 in the drawing denotes an instrument panel having a handle 3 on the right side. The instrument panel 1 has a laminated structure including a substrate 5, a foam layer 7, and a skin 9 from the inside, and an airbag device 11 is arranged in the instrument panel 1 in the passenger seat side region.

The airbag body 13 of the airbag device 11
Is a module cover 15 whose front surface is torn up and down by a thin portion, an airbag 17 folded inside the module cover 15, and a gas generator 21 for sending gas into the airbag 17 by a signal from an impact detection sensor 19. Both ends of the airbag main body 13 are supported by brackets 25 of a steering member 23 mounted in the instrument panel 1 by fixing screws 27.

The gas generator 21 is filled with gas generating tablets in the gas generator main body, and the tablets are activated by an ignition signal (not shown) when a signal from the impact detection sensor 19 is input. ) To explosively generate gas.
This causes the airbag 17 to inflate rapidly.

Further, the outer skin 9 of the instrument panel 1 at a portion facing the airbag body 13 is formed with an airbag escape opening peripheral edge 29 consisting of four sides of upper, lower, left and right,
A region surrounded by the air bag ejection opening peripheral edge 29 has a shape that functions as an air bag grid 30.

The air bag ejection opening peripheral edge 29 is formed by a soft member 31 which is easily torn by a pressing force when the air bag 17 is deployed. The soft member 31 is arranged along the U-shape, and the remaining one side functions as the hinge portion 33.

Further, the foam layer 7 and the substrate 5 are notched along the peripheral edge 29 of the airbag opening so that the foam layer 7 and the substrate 5 can be easily torn by the pressing force when the airbag is deployed.

According to the air bag grid structure thus constructed, since the air bag grid has an integral shape with the instrument panel 1 formed by covering with the outer skin 9, a high appearance quality is obtained and the work of attaching the air bag grid is unnecessary. .

On the other hand, in the event of an emergency such as a collision, the impact detection sensor 19 operates and the airbag 17 deploys and presses the inside of the peripheral portion 29 of the airbag ejection opening. As a result, the skin 9 is torn in a U shape together with the soft member 31, and at the same time, the substrate 5 and the foam layer 7 are smoothly rotated upward with the hinge portion 33 as a fulcrum as shown by a chain line in FIG. 17 will bulge greatly toward the outside.

[0019]

As described above, according to the air bag grid structure of the present invention, the instrument panel has a high appearance quality formed by covering with the outer skin, and the air bag grid need not be attached. Therefore, it is very preferable in terms of workability. Also,
The soft member provides an opening mode in which the periphery of the airbag opening is smoothly opened.

[Brief description of drawings]

FIG. 1 is a cut side view of a main part showing an air bag grid structure.

FIG. 2 is an exploded perspective view of a main part.

FIG. 3 is a perspective view of the entire instrument panel embodying the present invention.

[Explanation of symbols]

 1 Instrument Panel 5 Substrate 7 Foaming Layer 9 Skin 13 Airbag Body 29 Airbag Ejection Opening Edge 31 Soft Member

Claims (1)

[Claims] 1. An inside of an instrument panel having a deployable airbag disposed inside an instrument panel in which a surface of a foam layer is covered and molded with a skin, and the inside of the instrument panel facing the airbag body. An air bag grid structure characterized in that the air bag ejection opening peripheral edge is formed by a soft member that at least leaves a side that serves as a hinge portion due to a pressing force when the air bag is deployed and that makes a U-shaped split in the outer skin.