JPH0625056U - Mounting structure for automobile airbag device - Google Patents

Abstract

(57) [Abstract] [Purpose] An automobile airbag that is attached to an instrument panel portion, which includes a housing 2 that houses an inflator 3 and an airbag 4 therein, and a lid 5 that closes an upper opening of the housing. In the device 1, the position adjustment of the lid and the instrument panel and the fixing of the lid to the instrument panel can be performed by the work from the upper part of the instrument panel. [Structure] The housing 7 is provided with a clip 7, and the lid 5
The mounting surface 51b of the base material 51 is extended forward, the clip 7 is engaged with the seating surface 10b of the peripheral edge of the hole 10a of the instrument panel 10, and the mounting surface 51b is joined onto the seating surface 10b. The upper surface of the panel was fixed with screws, and the mounting surface 51b was covered with the cover 9. The main fixing of the airbag device 1 is performed by bolting the housing 2 to the steering support beam 11.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle airbag device, and more particularly, to a mounting structure for a passenger airbag device.

[0002]

[Prior art]

 As one of the safety measures against a collision of a car, an airbag device has been conventionally used in which the inflator is actuated during a collision to inflate the airbag, and the inflated airbag receives the head of an occupant who is leaning forward due to the collision. More developed.

An airbag device for a passenger seat has a structure in which an inflator and a folded airbag are housed in a housing having an upper opening, and an upper opening of the housing is closed by a lid. Make a hole in the instrument panel of the instrument that almost fits the lid of the airbag device, align the lid with the hole to assemble the airbag device, and attach the bracket fixed to the housing to the body side member (usually below the instrument panel). It is general that the portion is fixedly attached to a steering support beam passing in the vehicle width direction by bolting (see, for example, JP-A-3-109150).

[0004]

[Problems to be solved by the device]

 When mounting the above-mentioned conventional airbag device for the passenger seat, the fixing work for aligning the hole of the instrument panel and the lid of the airbag device is structurally performed from below, that is, from the inside of the instrument panel. Therefore, it is extremely difficult to install it on the line of the automobile manufacturer, and the workability of attaching and detaching at the dealer is very poor.

The present invention mainly aims to address the above-mentioned conventional problems.

[0006]

[Means for Solving the Problems]

 According to the present invention, in the airbag device as described above, a mounting surface extending forward is integrally or integrally extended to the front edge of the base material of the lid, and a clip is provided on the rear surface of the housing, and the clip is attached to the instrument. The lid is fitted into the hole of the instrument panel by engaging the seating surface provided on the periphery of the hole of the panel and joining the mounting surface to the seating surface, and the mounting surface and the seating surface are joined together. Fix the lid to the instrument panel by screwing it from above, cover the mounting surface part that is screwed and fixed with a cover, and fix the housing to the vehicle body side member (for example, steering support beam) to fix the airbag device. It is characterized by being attached.

[0007]

[Action]

 As described above, the clip for engaging the seating surface is provided on the housing of the airbag device, and the base of the lid is configured so that the mounting surface extends forward, so that the lid of the airbag device and the hole of the instrument panel are Positioning and fixing of the lid can be done by working from above the instrument panel, which can improve the installation workability, and it is possible to install the airbag device on the line of the automobile manufacturer. Also, the work of attaching and detaching at the dealer becomes easy. Also, by covering the exposed part of the mounting surface with a cover, it is easy to secure the appearance and quality.

[0008]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 is an airbag device for a passenger seat, and the airbag device 1 is attached to an instrument panel 10 portion in front of the passenger seat.

As shown in FIG. 2, the airbag device 1 includes an inflator 3 and a folded airbag 4, which are housed in a housing 2 having a substantially U-shaped cross-section with an open upper portion. The lid 5 has a structure in which the upper opening is closed. Similar to the instrument panel 10, the lid 5 has a structure in which a shock absorbing layer 52 made of foam such as urethane is laminated on the surface of a base material 51 made of sheet metal or hard plastic and the surface is covered with a skin material. The front edge of the base material 51 is bent downward to form a bent portion 51a, and the bent portion 51a is fixedly bonded to the front edge of the opening of the housing 2 to form a rear edge of the base material 51. The lid 5 is fixed to the opening of the housing 2 by fixing it to the rear edge of the opening of the housing 2 by a fixing member 6 having a breaking portion 6a that breaks under a load larger than a predetermined value. Mounted. A mounting surface 51b extending forward from the front edge of the impact absorbing layer 52 is substantially fixed to the bent portion 51a through the reinforcing member 51c (or directly), and the opening portion of the housing 2 is fixed. On the outer side of the rear edge, clips 7 are fixed to the lower side of the rear edge of the lid 5 with a predetermined gap therebetween. A bracket 2a is fixed to the bottom surface of the housing 2.

The instrument panel 10 is provided with a hole 10a for fitting the airbag device 1, and a seating surface 10b for attaching the airbag device is provided all around the periphery of the hole 10a. .

Reference numeral 11 denotes a steering support beam whose left and right ends are fixed to a structural member (for example, a front pillar) on the vehicle body side (not shown). The steering support beam 11 is a beam for mounting and fixing the bracket 2 a of the housing 2. The bracket 11a is fixed.

The airbag device 1 is inserted into the hole 10a from above the instrument panel 10, and the clip 7 provided outside the rear edge of the opening of the housing 2 is attached to the lower side of the seat surface 10b at the rear edge of the hole 10a. The peripheral portion of the lid 5 is placed on the seat surface 10b by inserting it. Then, the rear edge of the lid 5 is temporarily fixed to the seat surface 10b with the rear edge of the lid 5 and the clip 7 sandwiched between the clip 7 and the seat surface 10b. 51b will be in the state of being joined and mounted. Next, while adjusting the position such that the dividing line between the outer peripheral edge of the lid 5 and the inner peripheral edge of the hole 10a of the instrument panel 10 becomes uniform, the mounting surface 51b is seated on the seat surface 10b from the upper portion of the instrument panel. Tighten and fix with 8. Then, the entire exposed portion of the mounting surface 51b above including the fixing portion by the screw 8 is covered with the cover 9, and the bracket 2a of the housing 2 is fastened and fixed to the beam bracket 11a of the steering support beam 11 with bolts. Then, the installation of the airbag device is completed. The cover 9 has a width that substantially matches the gap between the front edge of the shock absorbing layer 52 of the lid 5 and the front edge of the hole 10a of the instrument panel 10, and the upper surface of the lid 5 and the instrument panel in the mounted state. It is configured to have a height that allows it to be naturally connected to the upper surface of 10 without a step.

By providing the mounting surface 51b projecting toward the front of the lid as described above, fixing with the screw 8 is performed from the upper portion of the instrument panel while adjusting the dividing line between the lid and the instrument panel. As a result, the position of the lid and the instrument panel can be easily and reliably aligned, the workability of mounting can be improved, and the exposed portion above the mounting surface 51b is covered by the cover 9 so that the front edge of the lid is Since the cover 9 has a structure that naturally connects to the instrument panel, the appearance and quality can be sufficiently secured.

At the time of a collision, the inflator 3 is actuated by the detection signal of the collision sensor, the folded airbag 4 is inflated by the generated gas, and the fixing member 6 is broken by the pressure of the inflation. The occupant who ruptures further and the lid 5 pivots upward about the fixed portion by the bent portion 51a to open as shown by the chain line in FIG. 2, and the airbag 4 inflates and projects above the instrument panel and falls forward. Similar to the conventional device, it receives the head of the vehicle, and the reaction force during the operation of the airbag device is supported by the steering support beam 11 which is a vehicle side member as in the conventional case.

FIG. 3 shows another embodiment of the present invention. In this example, a fastening absorbing portion 52 on the other mounting surface 51b is made of a base material by leaving a fastening fixing portion 51b 'by a screw 8 partially. 51 The fastening fixing portion 51b 'which is continuously covered from above and partially exposed upward in a spot shape is fastened to the seat surface 10b with a screw 8 from the upper portion of the instrument panel, and then the fastening fixing is performed. The structure is the same as the embodiment shown in FIGS. 1 and 2 except that the upper portion of the portion 51b 'is covered with a cap-shaped cover 9'. .

Also in the embodiment of FIG. 3, similarly to the embodiment of FIGS. 1 and 2, while adjusting the dividing line between the lid 5 and the instrument panel 10, the lid 5 is instrumented from the upper part of the instrument panel. Since it can be fixed on the seat surface 10b of the panel, the position of the lid and the instrument panel can be easily aligned, the workability of mounting the airbag device 1 can be improved, and the appearance and quality can be secured.

1, 2 and 3, the bent portion 51a of the base member 51 of the lid 5 is eliminated and the base member 51 is extended forward to integrally form the mounting surface 51b. A mounting member having a substantially L-shaped cross section may be fixed to the lower surface of the base material 5, and the mounting member may be bonded and fixed to the front edge of the opening of the housing 2.

[0019]

[Effect of device]

 As described above, according to the present invention, the lid of the airbag device and the instrument panel can be fixed by the work from the upper part of the instrument panel, and the position of the lid and the instrument panel can be easily and securely aligned. As a result, the workability of mounting the air bag device can be improved, the appearance and quality of the work can be easily secured, the work can be mounted on the line of the automobile manufacturer, and the work of mounting and dismounting at the dealer can be facilitated. However, it can bring a great effect in practical use.

[Brief description of drawings]

FIG. 1 is an external perspective view of an airbag device mounting portion showing an embodiment of the present invention.

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

FIG. 3 is a cross-sectional view of an essential part showing another embodiment of the present invention.

[Explanation of symbols]

 1 Airbag device 2 Housing 3 Inflator 4 Airbag 5 Lid 6 Fixing member 7 Clip 8 Screw 9 Cover 10 Instrument panel 10a Hole 10b Seating surface 11 Steering support beam 51 Base material 51b Mounting surface 52 Shock absorbing layer

Claims (1)

[Scope of utility model registration request] 1. A lid, which comprises a housing for accommodating an inflator and a folded airbag therein, and a lid for closing an upper opening of the housing, the lid being provided on a seating surface around a hole provided in an instrument panel. In the airbag device for mounting and mounting the lid by aligning the lid with the hole and fixing the housing to the vehicle body side member,
A mounting surface extending forward is integrally or integrally extended to the base material of the lid including a base material, a shock absorbing layer such as foam laminated on the surface of the base material, and a skin material covering the surface. ,
A clip that engages with the seating surface of the hole edge of the instrument panel is provided on the rear surface of the housing, and the clip is engaged with the seating surface so that the mounting surface of the lid is on the seat surface of the hole edge of the instrument panel. And attach the lid to the hole of the instrument panel, and fix the mounting surface from the upper part of the instrument panel to the seat surface by screwing,
A mounting structure for an automobile airbag device, wherein a cover for covering a portion of the mounting surface exposed above the instrument panel is mounted on the mounting surface.