JP2002037004A - Seat equipped with air bag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily assemble a seat equipped with an air bag device in good appearance so as to be able to quickly inflate and develop an air bag by preventing the exposure of the interior by a rupture part formed of the seams of a trim cover, providing a module holder provided with a rupture part formed of a fragile part, at a front wall part facing a side face cover part, and adjusting the positions of the respective rupture parts to effectively apply the inflating pressure of the air bag to the rupture parts. SOLUTION: The rupture part 8 of the trim cover 7 is provided within a plane of a side face cover part 7b at the seam. The rupture part 8 and the rupture part 93 of the front wall part 90 are adjusted to each other, and the respective plate faces of a front wall part 90 and a projecting flange part 94 are individually sewn to a side face cover part 7b in the adjacent positions on both sides through the rupture part 8 to mount the module holder 9. A base plate 10 is mounted to the plate face of a seat frame 5 together with an air bag device 1, and fastening hooks 10a, 10b of the base plate 10 are engaged with fastening holes 95, 96 of side wall parts 91, 92 to accommodate and hold the air bag device 1 in the module holder 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag device in which an airbag is assembled so that it can be inflated and deployed outward by gas pressure, and a seam of a trim cover which covers the equipment side of the airbag device. The present invention relates to an improvement in an airbag device-equipped seat that forms a broken portion of a trim cover as the airbag is inflated and deployed.

[0002]

2. Description of the Related Art In general, airbag device-equipped seats have been proposed in which a trim cover is formed at a seam between a front cover portion and a side cover portion where the trim cover is sewn into a bag shape. JP-A-11-7
8762).

[0003] In the airbag device-equipped seat, the break portion of the trim cover is formed by a seam between the front cover portion and the side cover portion. Away. For this reason, it takes some time for the inflating and deploying airbag to reach the broken portion of the trim cover.

On the other hand, there is provided a substantially hollow box-shaped module housing in which a break portion due to a thin fragile portion is provided in the surface of a front wall portion facing the side cover portion of the trim cover, and a slit-shaped opening is provided on the side cover. In addition, there has been proposed an arrangement in which the opening edges of both sides of the module cover are fixed to the front wall portion and the side portions of the module cover with fasteners while being provided in the plane of the side cover portion (see Japanese Patent Application Laid-Open No. Hei 11 (1999)). No. 2555062).

[0005] With this airbag device-equipped seat, the opening of the trim cover and the broken portion of the module housing can be aligned with each other, and the airbag that inflates from the broken portion of the module housing regardless of the material of the trim cover. From the opening of the trim cover to the outside.

However, in the airbag device-equipped seat, the opening edges on both sides of the seat are fixed to the front wall and the side portions of the module housing with the stoppers, with the opening of the side cover portion therebetween. In addition to the complicated structure, even if the opening edge of the side cover is fixed to the module housing with a stopper, the opening is turned up and the module housing is exposed to the outside through the gap of the opening. There is a concern that doing so may damage the appearance.

[0007]

According to the present invention, the trim cover is formed with seams to prevent the inside of the trim cover from being exposed, and the thin brittle portion faces the side cover of the trim cover. Equipped with a module holder provided on the front wall, aligning each break and applying the inflation pressure of the air bag to each break effectively, allowing the air bag to be inflated and deployed quickly and easily assembled in good shape. An object of the present invention is to provide a seat equipped with an airbag device.

[0008]

In the airbag device-equipped seat according to the first aspect of the present invention, a front wall portion facing the side cover portion of the trim cover, and front and rear side wall portions rising from the front wall portion. A break portion due to a thin fragile portion is provided in the plane of the front wall portion along the edge with the front wall portion, and an overhang flange portion is provided continuously from the edge of the front wall portion provided with the break portion. Further, a module holder provided with a stop hole positioned in-plane from an end of each side wall portion is provided, and a hook for engaging with a stop hole provided on each side wall portion of the module holder is provided at both ends. Provided with a base plate provided, a break portion of the trim cover is provided in the plane of the side cover portion at the seam of the side cover portion, and the break portion of the trim cover and the break portion of the front wall portion are aligned to hold the module holder. side Place the module holder inside the trim cover by sewing each plate surface of the front wall portion and the overhanging flange portion separately from the side cover portion at adjacent positions on both sides of the trim cover at the adjacent positions via the break portion of the trim cover. On the other hand, the base plate is attached to the surface of the seat frame together with the air bag device, and the hooks of the base plate are engaged with the stop holes in each side wall to hold and hold the air bag device with the module holder. Have been.

In the airbag device-equipped seat according to the second aspect of the present invention, the module holder is formed with a thick reinforcing edge at an end edge from a stop hole of each side wall for engaging with a hook of a base cover. It is constituted by assembling.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a seat equipped with an airbag device according to an embodiment shown in FIG.
Is shown. The airbag device 1 is provided with an inflator for gas generation, not shown, and an airbag folded so as to be inflatable and deployable by gas pressure. The airbag is accommodated in a module holder, which will be described later, and is mounted inside the seat back B. I have.

The airbag device 1 is housed and arranged in a cavity 3 provided on the side of the back pad 2, and is applied to the side plate 5 of the seat back frame 4 and tightened with bolts 6 to the surface of the side plate 5. The back pad 2 including the cavity 3 is mounted and fixed, and the entire back pad 2 is covered with a trim cover 7 so as to be provided inside the seat back B.

The trim cover 7 can be formed using a single material such as genuine leather, synthetic leather, fabric, or the like, or a wading cover in which a skin material, a wadding material, and a backing material are integrally laminated and formed. The trim cover 7 corresponds to a seat back B having a bank portion, and a front cover portion 7a covering the left and right bank surfaces from the center of the seating surface and a side cover portion 7b extending from the peripheral side surface to the rear surface are sewn together. The cover 7c is sewn in a bag shape by being provided with a slide fastener 7d so as to be freely opened and closed.

As shown in FIG. 2, the trim cover 7 has a side cover 7b divided into two front and rear covers 70 and 71, and the inflation of the airbag is started from the seam of the two front and rear covers 70 and 71. A break 8 caused by deployment is provided in the plane of the side cover 7b. The seam that becomes the break portion 8 is easily broken by the inflation force of the airbag while maintaining the strength that can withstand normal usability by sewing the thread of about 8th and the thread of about 20th as upper and lower sewing threads. Can be sewn.

The seam to be the break portion 8 of the trim cover 7 is provided at least in accordance with the installation location of the airbag device 1, and the remaining two cover portions 70 except for the portion corresponding to the break portion 8 are provided. , 71 are sewn in the same manner as the general surface to form a side cover 7c.

Inside the trim cover 7, a module holder 9 made of resin or the like made of polypropylene or the like is provided. As this module holder 9,
Front wall 90 facing side cover 7b of trim cover 7
And the side wall portions 91 before and after rising from the front wall portion 90,
92 is provided. The module holder 9 may be provided with upper and lower walls as required.

The module holder 9 has a fragile portion 93 formed in the inner surface thereof with a V-shaped groove or the like and formed with a fragile portion. The broken portion 93 is provided in the in-plane width direction of the front wall 90 along the edge with the front wall 91. Have been. Further, the front wall portion 9 provided with the broken portion 93
An overhanging flange portion 94 is provided continuously from the 0 edge. Further, a plurality of stop holes 95,..., 96,... Are provided at predetermined intervals in the width direction so as to be located in the surfaces near the ends of the side walls 91, 92.

As shown in FIG. 3, the module holder 9 is disposed inside the side cover 7b so as to be aligned with the break 8 of the trim cover 7 and the break 93 of the front wall 90. The front wall portion 90 and the protruding flange portion 94 are parallel to the seam of the break portion 8 at the adjacent positions on both sides via the break portion 8 to separate the front and rear side cover portions 70 and 71 individually. It is attached to the inside of the trim cover 7 by sewing.

A module holder 9 and a base plate 10 are provided. The base plate 10 may be formed of a metal plate. At both ends, stop holes 95, 96, 96 provided in the side walls 91, 92 of the module holder 9 are provided.
., 10b..

The base plate 10 is applied to the side plate 5 of the seat back frame 4 together with the airbag device 1, and the fastening bolt 6 of the airbag device 1 is used.
And are fixedly fastened to the plate surface of the side plate 5. If the tightening bolts 6 are arranged so that the axis line coincides with the direction of inflation and deployment of the airbag (see the arrow in FIG. 1), the airbag device 1 can be stably and securely fixed.

When the module holder 9 covers the back pad 2 with the trim cover 7 on the base plate 10, the module holder 9 inserts the side walls 91 and 92 from the cavity 3 into the interior, and the hooks 10a of the base plate 10 are hooked. , 10
are engaged with the retaining holes 95, 96,... of the side walls 91, 92 to accommodate and hold the airbag device 1.

In the airbag device-equipped seat configured as described above, since the broken portion 8 of the trim cover 7 is formed by a seam, the inside can be prevented from being exposed, and the broken portion 93 due to the thin fragile portion is formed on the trim cover 7. By providing the module holder 9 provided on the front wall portion 90 facing the side cover portion 7b, the module holder 9 can be easily provided by aligning the break portions 8, 93, and the inflation pressure of the airbag can be reduced. The air bag is effectively acted on each of the break portions 8, 93, so that the air bag can be quickly inflated and deployed so that it can be easily and conveniently assembled.

As shown in FIG. 4 (only one side is shown), the hook 1
Module holder 9 having an end edge formed by a thick reinforcing edge 97 from a stop hole 95 of each side wall portion 91 which engages with each other.
It is good to assemble.

This reliably prevents each side wall portion 91 from coming off the base plate 10 with the inflation and deployment of the airbag, and a reinforcing edge having a thicker end edge than the stop holes 95 of each side wall portion 91. In order to prevent the air bag from expanding or breaking at 97, the inflation pressure of the air bag can be concentrated on each of the breaks 8, 93, and the air bag can be quickly inflated and deployed.

In addition, in the above-described sewing structure of the front wall portion 90 and the overhanging flange portion 94, the seams 11a and 11b of the corresponding portions are substantially parallel to the seam of the break portion 8 as shown in FIG. Since the stitches 11a and 11b are provided so as to extend over the entire length of the stitches 7b, the double stitch structure of the stitches 11a and 11b can be configured to maintain good decorativeness.

[0025]

As described above, according to the airbag device-equipped seat according to the first aspect of the present invention, the broken portion of the trim cover is provided in the plane of the side cover portion at the seam of the side cover portion. The module holder is arranged inside the side cover part by aligning the break part of the trim cover with the break part of the front wall part, and the front wall part and the overhanging flange are located at adjacent positions on both sides via the break part of the trim cover. Each module surface is sewn separately to the side cover, and the module holder is attached to the inside of the trim cover.On the other hand, the base plate is attached together with the airbag device to the plate surface of the seat frame. By holding the air bag device with the module holder by engaging with the stop hole of Since the inside is prevented from being formed by the seam, the module holder can be easily installed by aligning the break portion of the trim cover with the break portion of the front wall, and the inflation pressure of the air bag can be reduced by each break. The air bag can be effectively assembled and easily assembled in a good manner so that the air bag can be quickly inflated and deployed.

According to the airbag device-equipped seat according to the second aspect of the present invention, the end edge is formed as a thick reinforcing edge from the stop hole of each side wall for engaging the hook of the base cover. By assembling the module holder, it is possible to reliably prevent each side wall portion from coming off from the base plate as the airbag is inflated and deployed, and to extend or cut the end edge from the stop hole of each side wall portion with a thick reinforcing edge. In order to prevent the air bag from inflating, the inflation pressure of the air bag can be concentrated on each of the broken portions, and the air bag can be quickly inflated and deployed.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing an airbag device-equipped portion of an airbag device-equipped seat according to the present invention.

FIG. 2 is a perspective view showing a seat back of a seat equipped with an airbag device according to the present invention.

FIG. 3 is a partial cross-sectional view showing a sewing position of a module holder in the airbag device-equipped seat according to the present invention.

FIG. 4 is a partial cross-sectional view showing a portion where the module holder and the base plate are hooked in the airbag device-equipped seat according to the present invention.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 air bag device 2 back pad 3 cavity of back pad 4,5 seat frame 6 fastening bolt of air bag device 7 trim cover 7b side cover 70 front side cover 71 side rear cover 8 trim cover break 9 module Holder 90 Front wall part of module holder 91, 92 Side wall part of module holder 93 Break part of module holder 94 Extension flange part of module holder 95 ..., 96 ... Stop hole of module holder 97 Reinforcement edge of module holder 10 Base plate 10a ..., 10b ... Hook hook for base plate

Claims (2)

[Claims] An airbag device is provided in which an airbag is assembled so as to be inflatable and deployable toward the outside by gas pressure, and the airbag device is accommodated in a hollow portion provided on a side portion of a back pad. Attach to the frame and cut the trim cover that covers the equipment side of this air bag device from the seam of the trim cover. A front wall portion facing the front wall portion and a side wall portion before and after rising from the front wall portion, and a break portion due to a thin fragile portion is provided in the plane of the front wall portion along the edge with the front wall portion, and It is possible to provide a projecting flange portion continuously from the edge of the front wall portion provided with the portion, and further comprising a module holder provided with a stop hole located in the plane from the end of each side wall portion. And a base plate provided on both ends with a hook for engaging with a stop hole provided on each side wall of the module holder, and a cut portion of the trim cover is formed at a seam of the side cover in a plane of the side cover. And the module holder is arranged inside the side cover portion by aligning the break portion of the trim cover with the break portion of the front wall portion, and the front wall portion is located at adjacent positions on both sides through the break portion of the trim cover. Also, sew each plate surface of the overhang flange part with the side cover part individually and attach the module holder inside the trim cover,
On the other hand, the base plate is attached to the plate surface of the seat frame together with the airbag device, and the latching hook of the base plate is engaged with the stop hole of each side wall portion to hold and hold the airbag device with the module holder. Seat with airbag device. 2. The module holder according to claim 1, wherein a module holder is formed in which an end edge is formed as a thick reinforcing edge from a stop hole of each side wall for engaging with a hook hook of the base cover. Seat with airbag device.