JP2578188Y2 - Airbag device for passenger seat - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag device which is mounted on a vehicle and automatically inflates in the event of a vehicle collision to protect an occupant.

[0002]

2. Description of the Related Art An airbag device is used when a vehicle collides.
A safety device for inflating a bag instantaneously as an assistance of a seat belt when an impact is equal to or more than a predetermined amount and protecting an occupant, usually an inflator which is a gas generator, a bag which is inflated by gas of an inflator, And an airbag case having a substantially U-shaped cross-section for enclosing and storing the airbag substantially airtightly. In the operation of the airbag device, the gas ejected from the inflator fills the airbag case and the airbag to generate an internal pressure, and the bag is deployed by the internal pressure.

On the other hand, the airbag device described above is not limited to the driver's seat, but recently the one for the passenger seat has been developed. This passenger seat airbag device includes a door at an opening of an airbag case to be mounted inside an instrument panel of a vehicle, and the airbag door constitutes a part of the instrument panel. The interior of the car is kept natural in appearance.

On the other hand, the door of the above-described passenger airbag device forms a part of the instrument panel inside the vehicle as described above.
As shown in the publication, most of the panels are attached to the panel so that the lid can be freely opened around the base of the door. However, the inventor of the present application has attempted to improve the mountability and reduce the cost associated therewith. For this reason, attention was paid to attaching the base of the airbag to the airbag case.

That is, this airbag device has a structure in which the airbag door is attached to the opening of the airbag case so that the lid can be opened around the base of the door. In addition, since the door of the airbag device is displaced or opened at the time of mounting when fixing only the base portion, a tab is provided near the distal end portion, and the tab is engaged with the airbag case. This ensures stable attachment of the door to the case.

[0006]

The above-mentioned tab is attached to the airbag case by a rivet penetrating the case wall so that the crushed portion of the rivet after being driven does not project to the inner surface of the case. A concave portion for accommodating the rivet crushed portion is formed on the inner surface of the case by bulging the case wall outward, but in such a conventional mounting method, the bulge of the bulge may be different. For this reason, there is an inconvenience that the mounting position of the tip of the airbag door to the case is slightly shifted.

In view of the above situation, the present invention improves a bracket for fixing an airbag module to an instrument panel, and shares the bracket to fix the module and the airbag door simultaneously. By doing so, it is an object of the present invention to further improve the installation accuracy of the airbag door with respect to the instrument panel.

[0008]

That is, the features of the airbag device for a passenger seat according to the present invention that meet the above-mentioned object are that an airbag case for accommodating an airbag body and an inflator, and an opening in the case are provided. An airbag device having an airbag door disposed so as to be able to be opened with a base as an axis, wherein a bracket having a fitting portion to be attached to a pedestal of an instrument panel of a vehicle is fixed to a wall portion of the airbag case. At the same time, a door bracket portion is extended from a part of the bracket, and a door fixing tab provided near the front end portion of the airbag door is locked by the door bracket portion.

[0009]

In the airbag device of the present invention, the airbag door is attached to the airbag case by the bracket for mounting the airbag module to the instrument panel. The door is not displaced under the influence of the shape of the wall, and the door is directly attached to the instrument panel via the bracket, so that the installability of the airbag door with respect to the panel is remarkably improved. It is possible to improve.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 is a side view showing an airbag device for a passenger seat according to an embodiment of the present invention, FIG. 2 is a perspective view showing a bracket of the embodiment, FIG. 3 is a cross-sectional view showing an attachment state of the bracket and an airbag case. FIG. 4 is an explanatory view showing an example of attaching a tab to a bracket in the apparatus of the embodiment.

As shown in FIG. 1, the airbag device of this embodiment accommodates an airbag bag (1) folded in a bellows and an inflator (2) as a gas generator in an airbag case (3). In addition, an airbag door (6) is provided in the opening (4) of the case (3) so that the airbag door (6) can be opened around the base (5). The airbag door (6) is, in this embodiment, at the base (5):
It is connected to the airbag case (3) by a bendable metal plate.

On the other hand, in the present invention, a fitting portion (8) is attached to the side (7) of the airbag case (3) to the pedestal (P) of the instrument panel of the vehicle.
The bracket (9) provided with the bracket (9) is fixed by welding, and the door bracket (10) is extended from the upper end of the bracket (9) by several mm from the case side wall (7) as shown in FIG. doing. The door bracket (10) locks a door fixing tab (11) provided on the side surface of the distal end portion of the airbag door (6) with a rivet (12).

The door fixing tab (11) fixes the airbag door (6) in a closed state together with the metal plate of the door base, and prevents the door (6) from being opened carelessly. On the other hand, when the airbag (1) is deployed, the door (6) is pushed by the bag (1) so as to be disengaged from the door bracket (10). . For example, in this example, as shown in FIG. 1, the right side of the tab (11) is notched, and when the door (6) is pushed as described above, the rivet (12) is released from this notch, The tab (11) and the door bracket (10) are disengaged from each other.

As shown in FIG. 2, the bracket (9) of the present invention has a hole (1) for the rivet (12).
3) and an instrument panel bolt hole (14) are arranged on the central axis, so that the left and right brackets (9) attached to both sides of the airbag device can be shared. Has become.

Furthermore, in this embodiment, since the door fixing tab (11) is fixed to the door bracket portion (10) using the rivet (12), as shown in FIG. The part (10) is provided at a required distance from the case side wall (7), and the airbag case (3) is provided.
A rivet gun (not shown) is provided with a stem insertion hole (15) concentrically so that the rivet (12) can be easily driven.

Thus, in the passenger airbag apparatus of the embodiment of the present invention having the above configuration, as described above, the bracket (9) for attaching the airbag module to the instrument panel (P) allows the airbag door to be mounted. Since the door (6) is attached to the airbag case (3), the door (6) is not displaced by the influence of the shape of the wall of the case (3) as in the related art.
Furthermore, by directly attaching the door (6) to the instrument panel via the bracket (9) as described above, the ease with which the airbag door (6) can be attached to the panel is significantly improved, and the vehicle interior is improved. It is possible to enhance the aesthetics of the package and to smoothly open the lid of the airbag door (6) when the apparatus is operated.

Although the embodiment of the present invention has been described above, the shape of the door bracket (10) is not limited to the above-described embodiment. For example, the door bracket (10) is formed so as to be parallel to the door (6). It is also possible to use a mating form of door fixing tab and lock it with rivets or other means.

[0018]

As described above, the airbag device for a passenger seat according to the present invention is an airbag device in which an airbag door is disposed at an opening of an airbag case so that the base can be opened around a base. A bracket having a fitting portion to be attached to a pedestal of an instrument panel of a vehicle is fixed to a wall portion of the airbag case,
A door bracket part is extended from a part of the bracket, and a door fixing tab provided near the front end of the airbag door is locked by the door bracket part. By attaching the airbag door to the airbag case by the bracket attached to the airbag case, the door does not shift due to the influence of the shape of the case wall as in the related art. By directly attaching the airbag door to the instrument panel via the bracket as described above, the ease with which the airbag door can be installed with respect to this panel is greatly improved, and the aesthetic feeling of the interior of the vehicle compartment is further enhanced, and the airbag during operation of the device is improved. This has a remarkable effect that the door can be opened more smoothly.

[Brief description of the drawings]

FIG. 1 is a side view showing an airbag device for a passenger seat according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the bracket of the embodiment.

FIG. 3 is a cross-sectional view showing a mounting state of the bracket and the airbag case.

FIG. 4 is an explanatory diagram showing an example of fixing a tab to a bracket in the apparatus of the embodiment.

[Explanation of symbols]

 (1) Airbag bag (2) Inflator (3) Airbag case (4) Case opening (5) Airbag door base (6) Airbag door (7) Case side wall (8) Fitting part (9) Bracket (10) Door bracket (11) Door fixing tab (12) Rivet (13) Rivet hole (14) Bolt hole

Claims (1)

(57) [Scope of request for utility model registration] 1. An airbag apparatus comprising: an airbag case accommodating an airbag body and an inflator; and an airbag door disposed at an opening of the case so as to be opened with a base as an axis. On the wall of the airbag case, a bracket having a fitting part to be attached to a pedestal of an instrument panel of a vehicle is fixed, and a door bracket part is extended from a part of the bracket. An airbag device for a passenger seat, wherein a door fixing tab provided near an end of an airbag door is locked.