JPH0858510A - Assembly structure of air bag device - Google Patents

Abstract

PURPOSE: To simplify and secure assembly of a cover body and an air bag into a housing by hindering the move of the cover body by means of a fixing means such as both side plates after locking the cover body to the housing by insertion of a fitting protrusion into an inserting hole and making it slide to the locking hole side. CONSTITUTION: A housing 11 has an opening area 17 opened toward the interior formed thereon as well as an inflater 12 and an air bag stored therein. The opening area 17 is closed up with a cover plate 18. The housing 11 has inserting hole 23 drilled on a locker piece 19 formed on the opening area 17 together with a locking hole 24 of smaller diameter than the inserting hole 23 provided in connection thereto. The cover body 18 has formed thereon a fitting protrusion 25 which is composed of a head 26, whose diameter is larger than that of the locking hole 24 and which is insertable into the inserting hole 23, and a shaft 27 which is locked by the locking hole 24. After locking the cover body 18 by inserting the fitting protrusion 25 in the inserting hole 23 and sliding it to the locking hole 24 side, movement of the cover body 18 is hindered by the fixed means of both side plates 33 and the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for assembling an airbag device for protecting an occupant in a vehicle collision.

[0002]

2. Description of the Related Art Conventionally, as an assembling structure of an airbag device, for example, a structure described in Japanese Utility Model Laid-Open No. 6-8118 has been generally used. That is, it has a structure in which the lid and the air bag are fastened and fixed to the fixing plate to which the inflator is attached with rivets or the like.

[0003]

In the above-mentioned conventional example, in order to attach the lid to the fixed plate, the fixed plate is provided with a plurality of lid attachment holes, which are aligned with the attachment holes provided in the lid. However, it is necessary to fasten these lid mounting holes with rivets or the like, and the work is complicated. In addition, in order to attach the airbag to the fixing plate, it is necessary to provide a plurality of airbag mounting holes in the fixing plate in addition to the lid mounting holes. It was necessary to match it with the mounting hole provided in the above and fasten it with a rivet or the like, and the work was complicated. As described above, in addition to the problem that the mounting work is complicated, there is a possibility that the mounting portion may be mistaken during the work.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to assemble an air bag device in which a lid and an air bag are easily attached. It is intended to provide structure.

[0005]

In order to achieve the above object, the assembly structure of an airbag device according to the present invention comprises a housing for accommodating an inflator and an airbag, and a housing having an opening opened toward a vehicle compartment. A lid plate for closing the opening is formed, and an insertion hole is formed in a locking piece formed on the opening side of the housing, and a locking hole smaller than the insertion hole is provided continuously to the insertion hole. On the other hand, a mounting projection is provided on the lid body, the mounting projection having a head portion that is larger than the locking hole and that can be inserted into the insertion hole, and a shaft portion that is locked in the locking hole. After the lid is inserted into the insertion hole and slid toward the locking hole to lock the lid on the housing, the movement of the lid is blocked by the fixing means. In addition, the locking piece is formed into a substantially U-shaped cross section to form a locking space between the locking piece and the housing, and a core member is attached to the mounting portion of the airbag to lock the core member in the locking space. The movement of the lid and the air bag is blocked by the fixing means.

[0006]

[Function] To assemble the lid body to the housing, after inserting the head of the mounting projection, which is larger than the locking hole and can be inserted into the insertion hole, into the insertion hole, the shaft is smaller than the insertion hole continuous with the insertion hole. The lid can be easily attached to the housing by sliding and engaging with the engaging hole of the hole. Further, by preventing the movement of the lid body by the fixing means, there is no fear that the lid body will accidentally come off. Further, the locking piece is formed into a substantially U-shaped cross section to form a locking space between the locking piece and the housing, and the core member is attached to the mounting portion of the airbag to lock the core member in the locking space. By doing so, the airbag can be easily attached to the housing. And
By blocking the movement of the lid and the airbag by the fixing means, there is no possibility that the lid and the airbag are accidentally removed.

[0007]

EXAMPLES Examples will be described with reference to the drawings. 1 is a front view of the airbag device, FIG. 2 is a plan view, FIG. 3 is a side view, and FIG. 4 is a sectional view taken along the line AA of FIG.

Reference numeral 11 denotes an inflator 1 having a cylindrical shape.
2 is a housing that houses the airbag 2 and the folded airbag 13. The housing 11 is arranged inside the steering wheel when it is mounted for the driver's seat, and inside the instrument panel when it is mounted for the passenger's seat, and is fixed via a bracket (not shown).

The housing 11 includes a top plate 14, a back plate 15 bent from the end of the top plate 14, and a back plate 15.
And a lower surface plate 16 bent and extended from the end portion of the above, and has a substantially U-shaped cross section. Further, the housing 11 is formed with an opening 17 opened on the side facing the occupant (the vehicle compartment side). The opening 17 is closed by a lid 18.

Locking pieces 19 for locking the lids 18 are formed at the tips of the upper plate 14 and the lower plate 16 of the housing 11 located in the opening 17. The locking piece may have a shape as shown in FIGS. 5 and 6, for example.

The locking piece 19 shown in FIG. 5 is formed by bending and extending the front end portions of the upper surface plate 14 and the lower surface plate 16 in opposite directions. The locking piece 19 shown in FIG. 6 is formed by bending and extending the front end portions of the upper surface plate 14 and the lower surface plate 16 in directions in which they separate from each other.

1 to 6, each locking piece 19 has a plurality of insertion holes 23, 23 along the longitudinal direction.
Is formed. Then, in succession to each insertion hole 23,
A locking hole 24, which is smaller than the insertion hole 23, is formed.
The locking holes 24, 24 ... May be formed continuously in the same direction in each insertion hole 23, and may be in the longitudinal direction (horizontal direction) of the locking piece or in the direction orthogonal to the longitudinal direction (vertical direction). Good.

The lid 18 has an opening 17 in the housing 11.
And a size capable of covering the facing locking pieces 19. Attachment projections 25, 25 ... Are formed at the upper end and the lower end of the lid 18 so as to correspond to the positions of the locking holes 24, 24. Each attachment protrusion 25 has a head portion 26 that is larger than the locking hole 24 and can be inserted into the insertion hole 23, and a shaft portion 27 that is substantially the same size as the locking hole 24 and that is locked in the locking hole 24. are doing.

Thus, in the present invention, the locking hole 24
After inserting the head 26 of the attachment projection 25, which is larger and can be inserted into the insertion hole 23, into the insertion hole 23, the lid 18 is fixed to the locking hole 24.
The lid 18 can be easily attached to the housing 11 by sliding the shaft portion 27 to the side and locking the shaft portion 27 into the locking hole 24 that is smaller than the insertion hole 23 continuous to the insertion hole 23.

At the desired portion of the lid 18, in the embodiment shown in FIGS. 4 and 7, the inflator 12 extends in the longitudinal direction at the portion of the lower end of the lid 18 where the mounting projections 25, 25 ... Are provided. At the time of operation, the groove 18 is formed with a thin wall thickness so that the lid 18 can be easily broken and the airbag 13 can be quickly inflated and deployed.

Next, a structure for attaching the airbag 13 to the locking piece 19 having a substantially U-shaped cross section shown in FIG. 4 will be described with reference to FIGS. 8 to 10. In addition,
8 is a rear view of the airbag 13, and FIG. 9 is B in FIG.
FIG. 10 is a partially enlarged sectional view taken along the line B, and FIG. 10 is a partially enlarged sectional view of the housing 11, the lid 18, and the airbag 13 in an assembled state.

In this embodiment, as shown in FIG. 9, the attachment portion of the airbag 13 is sewn with a bag to form a bag-shaped tubular portion 30.
Has been formed. Reference numeral 31 is a core member that is inserted into the bag-shaped tubular portion 30. Reference numeral 32 is a locking space formed in the housing 11 by the locking piece 19 which is bent and extended to have a substantially U-shaped cross section. Then, the airbag 13 can be easily stored in the housing 11 by inserting the portion provided with the core member 31 into the locking space 32.

After the air bag 13 is stored, both side surfaces of the housing 11 are covered with side plates 33 serving as fixing means,
The locking space 32 is closed, and the lid 18 and the airbag 13 are closed.
Can be prevented from moving. The fixing means is a side plate 33.
However, the present invention is not limited to this, and an appropriate means such as filling the insertion hole 23 so as to prevent the movement of the attachment protrusion 25 can be used.

As described above, in the present invention, the locking piece 1
9 is formed in a substantially U-shaped cross section to form a locking space 32 with the housing 11, and when the core member 31 is attached to the mounting portion of the airbag 13, the core member 31 is locked into the locking space 3.
The airbag 13 can be easily attached to the housing 11 by locking the inside of the airbag 2. The lid 18 and the airbag 13 are prevented from moving by a fixing means such as a side plate 33 that covers both side portions of the housing 11, so that the lid 18 and the airbag 13 are clamped and fixed and firmly assembled.

The inflator 12 may be of a hybrid type using a compressed gas containing argon as a main component.

[0021]

The present invention is constructed as described above, and the locking piece formed on the opening side of the housing is provided with a locking hole which is smaller than the insertion hole and which is continuous with the insertion hole. Since a mounting protrusion that is larger than the locking hole and that can be inserted into the insertion hole and a shaft portion that is locked in the locking hole is projected, the head of the mounting protrusion is inserted into the insertion hole. After that, the lid can be easily attached to the housing by sliding the lid and engaging the shaft portion of the attachment projection with the engagement hole. Moreover, by preventing the movement of the lid body by the fixing means, the attached state of the lid body can be made strong. In addition, the locking piece is formed into a substantially U-shaped cross section to form a locking space with the housing, and when the core member is attached to the mounting portion of the airbag, the core member is locked in the locking space. By doing so, the airbag can be easily attached to the housing. Moreover, since the fixing means prevents the lid body and the airbag from moving, the lid body and the airbag can be firmly attached.

[Brief description of drawings]

FIG. 1 is a front view of an airbag device.

FIG. 2 is a plan view of an airbag device.

FIG. 3 is a side view of the airbag device.

FIG. 4 is a sectional view taken along line AA of FIG. 1;

FIG. 5 is a perspective view of a housing.

FIG. 6 is a perspective view of a housing of another embodiment.

FIG. 7 is a perspective view of a lid body.

FIG. 8 is a rear view of the airbag.

9 is a partially enlarged cross-sectional view taken along line BB in FIG.

FIG. 10 is a partial enlarged cross-sectional view of a housing, a lid, and an airbag in an assembled state.

[Explanation of symbols]

 11 Housing 12 Inflator 13 Airbag 17 Opening 18 Lid 19 Locking Piece 23 Insertion Hole 24 Locking Hole 25 Mounting Protrusion 26 Head 27 Shaft 31 Core Member 32 Locking Space 33 Side Plate

Claims (2)

[Claims] 1. A locking piece formed on the opening side of a housing, the housing including an inflator and an air bag, the housing having an opening opened toward the vehicle compartment, and a lid plate closing the opening. In addition to forming an insertion hole in the lid, a locking hole that is smaller than the insertion hole is provided continuously to the insertion hole, while the head and the locking hole that are larger than the locking hole in the lid and can be inserted into the insertion hole are formed. A mounting protrusion having a shaft portion to be locked is projected, and the mounting protrusion is inserted into the insertion hole of the locking piece of the housing and slid to the locking hole side to lock the lid body to the housing, and then the lid. A structure for assembling an airbag device, characterized in that movement of a body is blocked by a fixing means. 2. The locking piece is formed into a substantially U-shaped cross section to form a locking space between the locking piece and the housing, and a core member is attached to the mounting portion of the airbag so that the core member is placed in the locking space. 2. The assembling structure for an airbag apparatus according to claim 1, wherein the assembly is locked and movement of the lid and the airbag is blocked by a fixing means.