JPH0524495A - Lid structure for assistant driver's seat air bag device - Google Patents

Abstract

PURPOSE:To avoid scattering of these surface members by forming at least holes situated sideways in the vehicle width direction among plural number of lid board side holes used to install the surface members on a lid board, in to long holes so as to point in the same direction, and allowing displacement of installation members in the vehicle width direction along the long holes. CONSTITUTION:An air bag lid 10 is constituted of plural number of surface members 10A and 10B having different surface color, and a pad 13 having a surface layer 12 is fixed to one side surface member 10A of a lid board 11. A surface member 15 constituting the other side surface member 10B of this lid board 11 is installed on the other side of the lid board 11 by means of installation members 28 through plural number of holes 26a of the lid board 11. At least holes 26a situated sideways in the vehicle width direction of the lid board 11 among the plural number of holes 26a bored in this lid board 11 are formed into long holes 26a so as to point in the peripheral direction. Thereby, expansion/deformation of the surface member 15 become possible in the early stage of development of an air bag, so that scattering of the surface member 15 can be avoided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid structure for a passenger airbag device for restraining the upper body such as the chest and face of a passenger in a collision.

[0002]

2. Description of the Related Art Conventionally, as a passenger seat airbag apparatus of the above-mentioned example, as disclosed in, for example, Japanese Utility Model Laid-Open No. 2-129950, a passenger seat side that alleviates the load generated on the upper body of an occupant at the time of a collision. It is already known that an airbag unit is arranged inside an instrument panel.

In a vehicle equipped with such a passenger airbag device, in the case where a stripe extending in the vehicle width direction having a different color from the instrument panel is formed on the instrument panel due to the design requirement of the passenger compartment, the above-mentioned method is used. It is necessary to divide the air bag grid covering the opening of the instrument panel into an upper surface portion and a lower surface portion so that the colors are different from each other. At times, the surface member constituting the above-mentioned surface portion is bulged and deformed by the load at the initial stage of deployment of the airbag, and there is a demand for preventing the surface member from scattering due to the bulging deformation.

[0004]

The invention according to claim 1 (first invention) of the present invention is designed while reliably avoiding the possibility of scattering of the surface member due to bulging deformation at the initial stage of airbag deployment, and It is an object of the present invention to provide a lid structure for a passenger airbag device that can improve the degree of freedom in color with respect to requirements.

In addition to the object of the invention described in claim 1, the invention described in claim 2 of the present invention (second invention) is capable of improving the supporting rigidity of the surface member with respect to the lid substrate. It is intended to provide a lid structure for a bag device.

[0006]

According to a first aspect of the present invention, a passenger side airbag unit for reducing the load generated on the upper body of an occupant at the time of a collision is provided inside the instrument panel. In a vehicle, an air bag grid covering the openings of the airbag unit and the instrument panel is provided, and the air bag grid is composed of a plurality of surface portions having different surface colors, and a pad with a skin is formed on one surface portion of the lid substrate. A plurality of surface members that are fixed to each other and that constitute the other surface portion of the lid substrate are attached to the other side of the lid substrate by attachment members through a plurality of holes of the lid substrate, and are formed in the lid substrate. The hole
The lid structure of the passenger airbag device is characterized in that at least a hole located laterally in the vehicle width direction of the lid substrate is formed as an elongated hole oriented in the same direction.

The invention according to claim 2 of the present invention is a vehicle in which a passenger side airbag unit for alleviating a load generated on the upper body of an occupant at the time of a collision is provided in an instrument panel. An air bag grid covering the openings of the unit and the instrument panel is provided, and the air bag grid is composed of a plurality of surface parts having different surface colors, and a pad with a skin is fixed to one surface part of the lid board, and the lid board is formed. A surface member constituting the other surface portion of the lid substrate is attached to the other side of the lid substrate by a mounting member through a plurality of holes of the lid substrate, the plurality of holes drilled in the lid substrate, at least the A hole located on the lateral side of the lid board in the vehicle width direction was formed as an elongated hole directed in the same direction, and the surface member and the lid board were engaged with each other by an engaging piece. Characterized in that's seat is a lid structure of the airbag device.

[0008]

According to the first aspect of the present invention, the pad with the skin is fixed to one surface portion of the lid substrate, and the surface member is attached to the other surface portion of the lid substrate. In response to the request, there is an effect that the degree of freedom in color can be improved by making the color of the above-mentioned skin different from the color of the surface member.

Moreover, the plurality of holes on the side of the lid substrate used for attaching the above-mentioned surface member and the lid substrate to each other are elongated holes in which at least holes located laterally in the vehicle width direction are oriented in the same direction (vehicle width direction). Since it is formed to allow the displacement of the mounting member in the vehicle width direction along the elongated hole and allows the bulging deformation of the surface member at the initial stage of airbag deployment, the possibility of the surface member scattering. There is an effect that can be surely avoided.

According to the second aspect of the present invention,
In addition to the effect of the invention according to claim 1, since the above-mentioned surface member and the above-mentioned lid substrate are engaged with each other by the engaging piece,
There is an effect that the support rigidity of the surface member with respect to the lid substrate can be improved.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. 1 to 4 (corresponding to a cross-sectional view taken along the line AA of FIG. 2) to FIG.
1, an opening 2 is formed on the passenger side of the instrument panel 1 so as to open a predetermined length in the vehicle width direction, and the airbag unit 3 on the passenger side is formed in the instrument panel 1 through the opening 2. Are installed.

Here, the above-described instrument panel 1
Forms a foam layer 5 on the instrument panel core 4, and the foam layer 5
The skin 6 is disposed on the surface of the. In addition, the airbag unit 3 described above detects a collision state with a sensor, ignites an igniter, and inflators (inflator,
By igniting the chemical substance contained in the gas generator 7 and passing the gas generated from this chemical substance through the filter into the airbag 8, the airbag 8 is expanded as shown in FIG. The airbag unit 3 is fixed to, for example, a steering support member via a support bracket 9 in order to reduce a load generated on the upper body of the passenger on the passenger seat side.

By the way, an air bag grid 10 is provided to cover the above-mentioned air bag unit 3 and the opening 2 of the instrument panel 1, and the air bag grid 10 is composed of upper and lower surface portions 10A and 10B having different surface colors. .

The above-mentioned air bag grid 10 is provided with a lid substrate 11 made of metal, for example, cold rolled steel plate (SPC), which constitutes the above-mentioned upper and lower surface portions 10A and 10B.
A pad 13 having an outer skin 12 is fixed to the upper surface portion 10A of the lid substrate 11, and these three members 11, 12,
13 constitutes an airbag applid 14.

Further, the lower surface portion 1 of the lid substrate 11 described above.
A surface member 15 made of a hard synthetic resin is attached to 0B, and the airbag member 16 is constituted by both the surface member 15 and the lid substrate 11.

A hinge member 17 made of cold rolled steel plate (SPC) extending in the vehicle width direction is provided between the upper end of the lid substrate 11 corresponding to the upper surface 10A and the upper end of the airbag unit 3 described above. The front end of the hinge member 17 on the side of the lid substrate 11 and the above-mentioned lid substrate 11 are fastened and fixed by a total of 6 sets of bolts, nuts 18 ... And the airbag unit 3 described above are fastened and fixed to each other using a total of four mounting holes 19 and mounting members (not shown) formed in the hinge member 17, and the airbag bag 10 described above is secured to the hinge member 17 by the hinge member 17. It is formed in a single-sided structure with the fulcrum as a fulcrum.

A total of three connecting members 20 made of synthetic resin are provided between the lower end of the lid substrate 11 corresponding to the lower surface 10B and the lower end of the airbag unit 3 described above. The shape of the connecting members 20 ... Is formed to have an L-shaped cross section, and the wall thickness thereof is set to a thickness at which it can be cut by a predetermined load. Then, the lid substrate 11 side surface of the connecting member 20 and the lid substrate 11 are fastened and fixed by two sets of bolts and nuts 21 and 21, and
The surface of the connecting member 20 on the side of the airbag unit 3 and the above-described airbag unit 3 are fastened and fixed to each other using the two mounting holes 22 and the mounting member (not shown) formed in the connecting member 20. Then, when a predetermined load is applied to the connecting member 20 in the initial stage of deployment of the airbag 8, the connecting member 20 is cut to open the airbag bag 10.

On the other hand, as shown in FIGS. 1 and 2, ribs 23 ... Which project toward the back side are integrally formed on the lid substrate 11 described above, and the respective ribs 23 ... Are combined in a grid pattern to form the lid substrate 11. In addition to increasing the strength of the vehicle, a total of three positioning bosses 24, which project toward the vehicle compartment, are integrally formed at a portion where the vertical ribs 23 and the horizontal ribs 23 cross each other.

While the positioning bosses 24 are provided with positioning holes 24a, the positioning holes 24a are formed.
A total of three cylindrical positioning pins 25 ... Are integrally formed of hard synthetic resin on the back surface of the surface member 15 corresponding to a.
The surface member 15 is positioned by inserting the above-mentioned positioning pins 25 into the positioning hole 24a.

In addition, the lid substrate 11 corresponding to the above-mentioned lower surface portion 10B is provided with the horizontal rib 23 on the lower side of FIG.
, Which are located above and below, are integrally formed, and the respective mounting seats 26 ... Allow bulging deformation of the surface member 15 in the initial stage of deployment of the airbag 8, and the surface member 15 allows the lid substrate 11 to move. To be able to move relative to
Elongated holes 26a that are oriented in the vehicle width direction are formed.

In this embodiment, a total of eight mounting seats 2 are provided.
The elongated holes 26a are formed in all 6 but the holes located on the lateral side in the vehicle width direction in which the relative movement amount with the lid substrate 11 due to the bulge deformation at the initial stage of deployment of the airbag 8 is large are formed. Of course, the hole located at the center in the vehicle width direction may be formed as an ordinary round hole.

Then, as shown in FIG. 5, a total of eight cylindrical mounting bosses 27 are integrally formed of hard synthetic resin on the back surface of the surface member 15 corresponding to the above-mentioned elongated holes 26a.
From the back surface side of the lid substrate 11 described above, each of the elongated holes 26a described above
The surface member 15 is attached to the lower surface portion 10B of the lid substrate 11 by means of screws 28 as attachment members which are screwed into the attachment bosses 27 through.

The illustrated embodiment is configured as described above, and the operation will be described below. At the initial stage of deployment of the airbag 8, the above-mentioned surface member 15 bulges through the lid substrate 11 toward the vehicle compartment side through the lid substrate 11 as indicated by a phantom line α in FIG. As described above, the plurality of holes on the side of the lid substrate 11 used for attaching the surface member 15 and the lid substrate 11 are elongated holes 2 respectively.
6a to allow displacement of the screw 28 in the vehicle width direction along the elongated hole 26a, thereby allowing bulging deformation of the surface member 15 at the initial stage of deployment of the airbag 8. There is an effect that the possibility of scattering of the member 15 can be reliably avoided.

Next, when the airbag deployment pressure further acts on the above-mentioned air bag grid 10, the lid substrate 1
1 is a connecting member that connects the airbag unit 3
0 ... is cut, the above-mentioned air bag grid 10 is opened one-sidedly upward with the hinge member 17 as a fulcrum, the airbag 8 is deployed as shown in FIG. 6, and the load generated on the upper body of the passenger on the passenger side. Alleviate.

By the way, the pad 13 with the skin 12 is fixed to the surface portion 10A on one side (the upper side in the embodiment) of the lid substrate 11, and the surface portion 1 on the other side (the lower side in the embodiment).
Since the surface member 15 is attached to 0B, it is possible to improve the degree of freedom in color by differentiating the color of the above-described skin 12 from the color of the surface member 15 in response to the design requirement in the vehicle interior. There is.

FIG. 7 shows another embodiment of the lid structure of the passenger seat airbag device. An engaging piece 29 having an L-shaped cross section is provided on the rear surface of the surface member 15 above the mounting boss 27 with a hard synthetic resin. With this, the undersurface of the same surface member 15 is integrally formed in the vehicle width direction over substantially the entire length in the longitudinal direction thereof, and the lower end bent portion 15a of the above surface member 15 is provided with a downward recessed undercut portion 30 substantially in the longitudinal direction of the same surface member 15. It is formed over the entire length in the vehicle width direction.

On the lid substrate 11 side, a metal engaging piece 31 having a substantially Z-shaped cross section that engages with the above-mentioned engaging piece 29 in a relatively movable manner is welded and fixed to the front surface side of the lid substrate 11. , An engaging piece 32 made of a metal having an L-shaped cross section that engages with the above-mentioned undercut portion 30 so as to be relatively movable is provided, and the engaging piece 32 is provided with a total of four screws 28 on the lower side. It is fastened together on the back side of.

As described above, the engaging piece 29 and the undercut portion 30 on the side of the surface member 15 are engaged with the upper and lower engaging pieces 31 and 32 on the side of the lid substrate 11 so as to be movable relative to each other. There is an effect that the supporting rigidity of the surface member 15 with respect to the lid substrate 11 can be improved while avoiding the possibility of the scattering of 15. Since the other points are the same as the configuration of the previous embodiment, the same parts in FIG. 7 as those in the previous figure are denoted by the same reference numerals and symbols, and detailed description thereof will be omitted.

FIG. 8 shows still another embodiment of the lid structure of the passenger airbag system. In this embodiment, the slits 33 are displaced on the rear surface side of the surface member 15 with respect to the elongated holes 26a. Column-shaped boss portion 35 integrally formed with a press-fitting piece 34 that is press-fitted and locked, followed by a neck portion having a substantially circular cross section.
8 in total are integrally formed, and the surface member 15 is press-fitted and locked to the lid substrate 11 from the front surface side with one touch.

With this structure, the number of assembling steps of the surface member 15 to the lid substrate 11 can be significantly reduced, and the total number of parts can be significantly reduced. Note that, in this embodiment also, in other respects, the same operation and effect as those of the previous embodiment can be obtained. Therefore, in FIG. The description is omitted.

In short, according to each of the above-described embodiments, the surface member 15 caused by the bulging deformation at the initial stage of the airbag 8 deployment.
There is an effect that it is possible to improve the degree of freedom in color with respect to design requirements while surely avoiding the possibility of scattering.

In the correspondence between the structure of the present invention and the above-described embodiment, the mounting member of the present invention is the screw 28 of the embodiment.
(See FIGS. 5 and 7) and the press-fitting piece 34 (see FIG. 8). Similarly, the engaging piece of claim 2 is the engaging piece 29 on the surface member 15 side shown in FIG. An undercut portion 30,
Although it corresponds to the upper and lower engaging pieces 31 and 32 on the lid substrate 11 side, the present invention is not limited to the configuration of the above-described embodiment.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a lid structure of a passenger airbag device of the present invention.

FIG. 2 is a rear view of the main part of FIG.

FIG. 3 is a plan view of an essential part of FIG.

FIG. 4 is a cross-sectional view of main parts taken along the line BB of FIG.

5 is an enlarged cross-sectional view of a main part taken along the line CC of FIG.

FIG. 6 is an explanatory view showing a deployed state of the airbag.

FIG. 7 is a vertical cross-sectional view showing another embodiment of the lid structure of the passenger airbag device of the present invention.

FIG. 8 is a vertical cross-sectional view showing still another embodiment of the lid structure of the passenger airbag device of the present invention.

[Explanation of symbols]

1 ... Instrument panel 2 ... Opening 3 ... Airbag unit 10 ... Air bag grid 10A ... One side surface 10B ... Surface portion on the other side 11 ... Lid substrate 12 ... Epidermis 13 ... Pad 15 ... Face member 26a ... elongated hole 28 ... Screw 29 ... Engaging piece 30 ... Undercut part 31, 32 ... Engaging pieces 34 ... Press-fitting piece

Claims (2)

[Claims] 1. In a vehicle in which a passenger seat side airbag unit for alleviating a load generated on an upper body of an occupant at the time of a collision is disposed inside an instrument panel, the airbag unit and the opening portion of the instrument panel are provided. An air bag grid is provided to cover the air bag grid, and the air bag grid is composed of a plurality of surface portions having different surface colors. A pad with a skin is fixed to one surface portion of the lid substrate, and a surface forming the other surface portion of the lid substrate. The member is attached to the other side of the lid substrate by the attaching member through the plurality of holes of the lid substrate, and the plurality of holes formed in the lid substrate are at least laterally in the vehicle width direction of the lid substrate. The lid structure of the passenger airbag device in which the holes located in the same direction are formed as elongated holes. 2. In a vehicle in which a passenger seat side airbag unit that alleviates a load generated on an upper body of an occupant at the time of a collision is disposed inside an instrument panel, the opening portions of the airbag unit and the instrument panel are provided. An air bag grid is provided to cover the air bag grid, and the air bag grid is composed of a plurality of surface portions having different surface colors. A pad with a skin is fixed to one surface portion of the lid substrate, and a surface forming the other surface portion of the lid substrate. The member is attached to the other side of the lid substrate by the attaching member through the plurality of holes of the lid substrate, and the plurality of holes formed in the lid substrate are at least laterally in the vehicle width direction of the lid substrate. The lid structure of the passenger airbag apparatus in which the holes to be positioned are formed in elongated holes oriented in the same direction, and the surface member and the lid substrate are engaged with each other by engaging pieces.