JP4259197B2 - Arrangement structure of head airbag device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an arrangement structure of a head airbag device in an automobile.
[0002]
[Prior art]
In the automobile, a head airbag device is arranged along the roof side rail from the side edge of the rear pillar on the passenger compartment side, and the side surface of the rear pillar and roof side rail on the passenger compartment side is resin together with the head airbag device. The thing covered with interior materials, such as the pillar trim which consists of materials, and a roof trim, is known (refer patent document 1).
[0003]
[Patent Document 1]
JP 2000-272462 (2nd page, FIG. 3)
[0004]
[Problems to be solved by the invention]
Since the pillar trim needs to secure a required trim rigidity so as not to be deformed or the like, it is required to be fixed to the pillar by a clip as close as possible to the end of the pillar trim.
[0005]
Therefore, in the conventional structure, the pillar trim is composed of the front and rear two members, and the front trim is fixed to the pillar by the clip near the front end, while the rear trim covers the head airbag device, The rear trim is fixed to the pillar at a portion rearwardly removed from the head airbag device, and a portion corresponding to the head airbag device has a thin-walled hinge structure that can be deployed by the inflation pressure of the airbag.
[0006]
Therefore, the pillar trim becomes two parts, which is disadvantageous in terms of cost, and it cannot be denied that a parting line between the front trim and the rear trim is generated and the appearance is deteriorated.
[0007]
Accordingly, the present invention provides a head airbag device in which the pillar trim is integrated, and the pillar trim can be clip-fixed to the pillar at the terminal portion without hindering the inflation and deployment of the airbag to ensure the required trim rigidity. An arrangement portion structure is provided.
[0008]
[Means for Solving the Problems]
In this invention, the clip which attaches the clip fixed to the side edge by the side of the passenger compartment side of this pillar to the interior material terminal part which covers the head protection airbag apparatus arrange | positioned along the side edge by the side of the passenger compartment of a pillar An engaging part is provided, and a clip insertion hole for inserting a clip into the clip engaging part and a slit cut out from the clip insertion hole along the airbag deployment direction are formed, and the clip is inserted into the clip insertion hole. The clip neck portion is provided, and the clip engaging portion is slidable with respect to the clip neck portion through the slit by the inflation pressure of the airbag so as to be detached from the clip .
[0009]
【The invention's effect】
According to the present invention, when the head airbag device is actuated to inflate the airbag and this inflation pressure acts on the terminal portion of the interior material, the clip that fixes the interior material terminal portion to the pillar is applied. The clip engaging portion of the interior material terminal portion slides in the airbag deployment direction and is detached from the clip.
[0010]
As a result, the interior material is integrated and the terminal portion is clipped to the pillar to ensure the required mounting rigidity of the interior material. The airbag can be smoothly deformed by being bent sideways.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0012]
1 to 4 show an embodiment of the arrangement structure of the head airbag device according to the present invention. FIG. 1 shows the structure around the pillar in which the head airbag device is arranged from the vehicle compartment side. FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, FIG. 3 is a perspective view showing a way of fixing the interior material terminal portion to the clip on the pillar, and FIG. It is a perspective view which shows the state which the clip engaging part of the interior material terminal part removed from the clip by the action | operation.
[0013]
In the embodiment shown in FIG. 1, the inflator 2 of the head airbag device 1 is disposed on the front side edge of the rear pillar 4 as a pillar on the passenger compartment side, and the air to which the generated gas of the inflator 2 is supplied. The bag 3 is disposed along the roof side rail 9 from the front side edge of the rear pillar 4 in a folded state, and the head airbag device 1 surrounds the peripheral portion of the side window panel WP.
[0014]
As shown in FIG. 2, the rear pillar 4 is formed in a closed cross section by a pillar inner 5 and a pillar outer 6, and a part of the inflator 2 and the airbag 3 is formed on a joint flange portion 7 between the pillar inner 5 and the pillar outer 6. It is arranged along.
[0015]
As shown in FIG. 3, the joining flange portion 7 is formed with an extending portion 7A in which the end portion of the pillar inner 5 is extended to the window opening side, and a plurality of vertical portions are formed in the extending portion 7A. A clip engaging hole 8 is provided.
[0016]
The extending portion 7A is stepped and formed from the joint flange portion 7 so as to ensure overall panel rigidity, and the clip engaging hole 8 forming portion is enlarged in area toward the window opening side. The reduction in panel rigidity due to the formation of the engagement holes 8 is compensated.
[0017]
The side surfaces of the rear pillar 4 and the roof side rail 9 on the passenger compartment side are covered with a resin pillar trim 10 and a roof trim 11 which are interior materials together with the head airbag device 1.
[0018]
The pillar trim 10 is basically firmly fixed to the general surface of the pillar inner 5 by a hidden clip (not shown), and the front end portion is arranged around the front side of the extending portion 7A at the front edge of the rear pillar 4. It is.
[0019]
As shown in FIGS. 3 and 4, a clip engaging portion 12 is integrally formed at the front end portion of the pillar trim 10 at a position corresponding to the portion where the clip engaging hole 8 of the extending portion 7A is formed. It is.
[0020]
The clip engaging portion 12 is composed of a bracket piece 12A and reinforcing rib pieces 12B formed on the upper and lower edges thereof, and a clip insertion hole for inserting a head 15A of a clip 15 to be described later into the bracket piece 12A. 13 and a slit 14 for detaching the clip from the clip insertion hole 13 to one side edge of the bracket piece 12A.
[0021]
The clip 15 is formed of a resin material, and is provided immediately after the clip head 15A, the clip head 15A, the clip neck 15C that connects the clip head 15A and the clip end 15B, and the clip head 15A. It consists of a presser spring piece 15D.
[0022]
In this embodiment, the clip head 15A and the clip end 15B are formed in a vertically long rectangle. Therefore, the clip engaging hole 8 of the extending portion 7A is slightly more than at least the longest side of the clip head 15A. The clip head 15 </ b> A is elastically deformed so as to pass through and be firmly engaged with the edge of the clip engagement hole 8.
[0023]
The distance between the clip end 15B and the presser spring piece 15D is substantially the same as the thickness of the bracket piece 12A.
[0024]
Here, when the head airbag device 1 is in operation, that is, when the airbag 3 is inflated by the gas generation operation of the inflator 2, the front end portion of the pillar trim 10 is shown by the chain line in FIG. As shown in the figure, it is bent and deformed toward the passenger compartment side, and is developed along the inner surface of the side window panel WP from between the end portion of the pillar trim 10 and the front side edge of the rear pillar 4. For this reason, the slit 14 for clip detachment having a width slightly smaller than the clip neck portion 15C is the deployment direction of the airbag 3 with respect to the clip 15 when the head airbag device 1 is operated, that is, in this embodiment, the bracket piece. The rear edge of 12A is notched and formed in the front-rear direction.
[0025]
In FIG. 1, 16 is a rear side trim, 17 is a rear seat, and 18 is a rear seat belt device.
[0026]
According to the structure of the above embodiment, the clip neck 15C existing between the clip end 15B and the presser spring piece 15D is inserted into the clip insertion hole 13 through the slit 14 of the bracket piece 12A as shown in FIG. By inserting and sub-assembling in advance to the clip engaging portion 12 of the terminal portion before the pillar trim, and inserting the clip head 15A into the clip engaging hole 8 provided in the extending portion 7A of the rear pillar front side edge, Since the clip head 15A passes through the clip engaging hole 8 and the presser spring piece 15D elastically contacts the surface of the extending portion 7A and the clip 15 engages with the extending portion 7A, the front end portion of the pillar trim 10 is connected to the rear pillar. 4 can be firmly fixed to the front edge of 4 to ensure the required trim rigidity and warp deformation of the front end portion of the pillar trim 10 due to thermal effects, etc. Can be performed well terminal processing of the pillar trim 10 to suppress.
[0027]
When the airbag 3 is inflated by the gas generation operation of the inflator 2 of the head airbag device 1 in an emergency, and this inflation pressure acts on the front end portion of the pillar trim 10, the end portion of the pillar trim 10 is connected to the rear pillar 4. The clip engaging portion 12 of the pillar trim 10 slides in the deployment direction of the airbag 3 through the slit 14 with respect to the clip neck portion 15C of the clip 15 fixed to the extending portion 7A on the front side edge. As shown in FIG. 4, the clip 15 is detached from the clip 15 that remains engaged with the clip engaging hole 8.
[0028]
As a result, the pillar trim 10 can be integrated into a single unit without dividing it into two front and rear parts, and the front end portion thereof can be fixed to the front side edge of the rear pillar 4 by the clip 15, so that the required mounting rigidity of the pillar trim 10 can be secured. When the bag device 1 is in operation, the front end portion of the pillar trim 10 is bent and deformed toward the passenger compartment as shown in the chain line of FIG. 2 and FIG. 4, and the airbag 3 is smoothly moved along the inner surfaces of the side window panels W and P. By deploying, the head of the occupant can be well protected.
[0029]
The structure of the present invention has been described by taking the above embodiment as an example. However, the present invention is not limited to this embodiment, and various other embodiments can be employed without departing from the gist of the present invention.
[Brief description of the drawings]
FIG. 1 is a perspective view of a structure around a pillar provided with a head airbag device according to an embodiment of the present invention, as viewed from the passenger compartment side.
2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a perspective view showing a way of clip-fixing the interior material terminal portion to the pillar according to the embodiment of the present invention.
4 is a perspective view similar to FIG. 3 for explaining the operation when the head airbag device according to the embodiment of the present invention is activated. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Head airbag apparatus 2 Inflator 3 Airbag 4 Rear pillar 5 Pillar inner 6 Pillar outer 7 Joint flange part 7A Extension part 8 Clip engaging hole 9 Roof side rail 10 Pillar trim (interior material)
11 Roof trim (interior material)
12 Clip engaging portion 12A Bracket piece 13 Clip insertion hole 14 Clip removal slit 15 Clip 15A Clip head portion 15B Clip end 15C Clip neck portion 15D Pressing spring piece

Claims (1)

A head protection airbag device is provided along the side edge of the pillar on the passenger compartment side, and both the side surface of the pillar on the passenger compartment side and the head protection airbag device are covered with interior materials, and the head airbag device is activated. The structure is such that the terminal portion of the interior material is sometimes bent by the inflation pressure of the airbag, and the airbag is deployed from between the interior material terminal portion and the pillar,
The interior material terminal portion includes a clip engaging portion for attaching a clip to be fixed to a side edge of the pillar on the passenger compartment side,
The clip engaging portion is formed with a clip insertion hole for inserting the clip, and a slit cut out from the clip insertion hole along the deployment direction of the airbag,
The clip is provided with a clip neck that is inserted into the clip insertion hole,
An arrangement structure of a head airbag device, wherein the clip engaging portion is slidable with respect to the clip neck through the slit and can be detached from the clip .

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