JP2001180352A - Vehicular seat having side air bag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily install couple of webbings which can surely guarantee the inflation and development of an air bag by the webbing with less manhours without increasing the number of part items. SOLUTION: Two webbing 9, 10 are divided in two directions from a seam being a rupture part 3 of a trim cover 2; the webbing 9 is pulled inside from an opening part 5 of a back pad 4; a trim wire 11 provided on the other end is hookingly fastened to upward cut pieces 8a, 8b arranged on a front side surface of a side plate 8 to fasten the end; the other is rolled in the rear side of the back pad from the front side of an air bad device; and a trim wire 12 provided on the other end is hookingly fastened to the rear edges 8c, 8d of the side plate 8 extending to the rear of a seat back frame 7 to fasten the end.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air bag device mounted on a side plate of a seat back frame.
From the seam of the front cover and the side cover of the trim cover enclosing the equipment side of the airbag device, form a break in the trim cover due to the inflation and deployment of the airbag. The present invention relates to an improvement in a vehicle seat provided with a side airbag device having an airbag which can be inflated and deployed outward by an output pressure generated from an inflator.

[0002]

2. Description of the Related Art As a vehicle seat provided with a side airbag device, two ends of a small stretch cloth are provided inside a trim cover by sewing each end together at a seam where a trim cover is to be broken. By arranging the webbings along the inside of the front cover portion and the side cover portion of the trim cover, and connecting and fixing the other terminals to the seatback frame side from different directions, the mounting area of the airbag device is reduced. A cover with a cloth has been proposed (Japanese Patent Laid-Open No. 11-78762).

In a vehicle seat provided with the side air bag device, even if the output pressure of the inflator is set low, the inflation pressure of the air bag is instantaneously concentrated on the break portion of the trim cover with the woven cloth, thereby breaking the trim cover. It is preferable because the seam to be formed can be quickly cut out, the broken portion of the trim cover can be reliably torn at the inflation pressure of the airbag, and the inflation balance and deployment direction of the airbag can be stably determined.

[0004]

SUMMARY OF THE INVENTION The present invention has a structure in which two power cloths can be easily assembled with a small number of man-hours so that the inflation and deployment of the airbag can be reliably ensured by the power cloth without increasing the number of parts. It is an object of the present invention to provide a vehicle seat provided with a side airbag device.

[0005]

In a vehicle seat provided with a side airbag device according to the present invention, a side plate of a seatback frame is provided by assembling the airbag device inside an opening provided on a side portion of a back pad. The trim cover covers the equipment side of the airbag device and forms a break in the trim cover as the airbag inflates and deploys from the seam between the front cover and side cover of the trim cover. It has an airbag device that has an airbag that can be inflated and deployed outward with the output pressure generated from the inflator from the part. With two webbings inside the trim cover, remove the webbing from the seam that will break the trim cover. One side is pulled inward from the opening of the back pad, and the trim wire attached to the other end of the webbing is hooked to the cut-and-raised piece provided on the side near the front part of the side plate to secure the terminal. The other is wound around the rear side of the back pad from the front side of the airbag device, and the trim wire attached to the other end of the webbing is hooked to the end edge of the side plate extending rearward of the seat back frame. The airbag device is fixed and attached to the side plate of the seat back frame, and is wrapped and accommodated by two webbings.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the accompanying drawings, FIG. 1 shows an assistant seat for accommodating and equipping an airbag device 1 in a vertical direction on a right side of a seat back B when viewed from the front side of a vehicle. In this assistant seat, the front cover 2a (in the case of a bucket seat, the bank of the back pad 4) covers the trim cover 2 of the seat back B with a break 3 caused by the inflation and deployment of the air bag. (The cover portion enclosing the portion) and the side cover portion 2b.

The airbag device 1 includes an inflator (not shown) and an airbag (not shown) assembled and housed in an airbag case, and is connected to an impact sensor mounted on the vehicle body as an airbag module to connect the inside of the seatback B to the interior. Be equipped with.

The airbag device 1 includes an airbag case in which a case lid is hingedly connected to a case body so that the case lid can be opened by the inflation pressure of the airbag, as shown in FIG.
This air bag case is assembled inside the opening 5 of the back pad 4 and attached and fixed to the side plate 8 of the seat back frame 7 with fastening bolts 6 protruding from the case body, so that the air bag case is built into the side of the seat back B. I have.

The trim cover 2 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 wading material, and a backing material are integrally laminated. The trim cover 2 corresponds to a seat back B having a bank, and includes a front cover 2a that covers the left and right bank surfaces from the center of the seating surface and a side cover 2 that extends from the peripheral side to the back.
b, and further, as shown in FIG. 3, the rear cover portion 2c is sewn in a bag-like shape by being provided with openable and closable slide slides 2d and 2e.

The trim cover 2 can be sewn in a predetermined bag shape by sewing a thread of about 8th, which can withstand normal usability, into upper and lower sewing threads and sewing the entire sewing machine. In addition, the general portion is sewn about 8th thread as upper and lower sewing thread, and the seam to be the break portion 3 of the trim cover 2 is usually formed by sewing about 8th thread and about 20th thread as upper and lower sewing thread. It can be sewn easily with the strength that can withstand the ease of use and easily broken by the stress caused by the expansion of the airbag.

On the trim cover 2, two webbings 9,
Reference numeral 10 is provided on the inner side by sewing together a seam to form the break portion 3 and one end. The webbings 9 and 10 are made of a material such as a polyester nonwoven fabric or a cotton fabric that has a small expansion even when subjected to the inflation pressure of an airbag. Further, as shown in FIG. 2, the airbag device 1 is provided so as to wrap the airbag device 1 which is divided into two directions from the seam forming the break portion 3 of the trim cover 2 and is attached and fixed to the side plate 8 of the seat back frame 7.

As shown in FIG. 2, the webbing 9 is pulled inward from the opening 5 of the back pad 4, and the trim wire 11 provided at the other end of the webbing 9 is connected to the side of the side plate 8 near the front. Cut-and-raised pieces 8a (8b)
The terminal is fastened by hooking it on. The other webbing 10 is wound from the front side of the airbag device 1 to the rear side of the back pad 4, and a trim plate 12 provided at the other end of the webbing 10 extends to the rear of the seat back frame 7. 8 and is fastened to the terminal edge.

[0013] Trim wires 11, 12 of the webbings 9, 10
Is inserted through the inside of the rimping bags 9a, 10a provided at the end of the webbing 10, as shown in FIG.
0a is provided so as to be partially exposed from the notches 9b, 9c, 10b, and 10c. The cut-and-raised pieces 8a and 8b for hooking the trim wire 11 can be formed as cut and bent hooks, as shown in FIG. .

In the vehicle seat provided with the side airbag device configured as described above, the airbag device 1 is wrapped inside the webbings 9 and 10 so that the seatback frame 7 is provided.
To be mounted on the side plate 8 of the trim cover 2 by directly receiving the inflation pressure of the air bag with the webbings 9 and 10.
Of the trim cover 2 can be quickly cut out even if the output pressure of the inflator is low, so that the broken portion 3 of the trim cover 2 can be reliably secured by the inflation pressure of the airbag. Assembled so that it can be torn.

The webbings 9, 10 are provided with trim wires 11,
12 is provided at each end, and the trim wire 11 is hung on the cut-and-raised piece 8a provided on the side surface near the front part of the side plate 8,
Since the trim wire 12 is fastened to the end edge of the side plate 8 extending rearward of the seat back frame 7 by terminal fastening, the number of components can be reduced and the air bag device 1 can be easily assembled and securely housed. it can.

The above-mentioned webbings 9 and 10 are generally formed such that one end side of the trim cover 2 which is sewn together with the ends of the front cover portion 2a and the side cover portion 2b is a short side and the other end side is a long side. It is good to equip with what was cut into a trapezoid or a triangular width.

According to the webbing, a large area can be obtained by sewn together a local portion of the seam forming the broken portion 3 of the trim cover 2 and a short side at a position corresponding to substantially the center of the airbag device 1 in the vertical direction. The stress caused by the inflation of the airbag received on the side is concentrated on the short side from the opposite side of the webbing, and the sewing thread is strongly pulled away by the seam allowance of each short side. The broken portion 3 of the cover 2 can be reliably torn.

[0018]

As described above, according to the vehicle seat provided with the side airbag device according to the present invention, the two webbings are divided in two directions from the seam where the trim cover is to be broken. While being pulled inward from the opening of the back pad, the trim wire attached to the other end of the webbing is hooked to a cut-and-raised piece provided on the side near the front portion of the side plate to fasten the terminal, and the other is an airbag device. By winding the trim wire attached to the other end of the webbing from the front side of the back pad to the rear end edge of the side plate extending rearward of the seat back frame and fastening the terminal to the terminal end, Not only can the trim cover be reliably broken with a webbing as the airbag is inflated, but the number of parts can be reduced and the air can be easily assembled. The Tsu grayed apparatus can be reliably accommodated lump wrapped in cloths.

[Brief description of the drawings]

FIG. 1 is a perspective view generally showing a vehicle seat including a side airbag device according to the present invention.

FIG. 2 is a partial sectional view showing one side of the vehicle seat.

FIG. 3 is a perspective view showing a trim cover of the vehicle seat in a state where a back portion is opened.

FIG. 4 is a perspective view showing a seat back frame of the vehicle seat from the rear side.

[Explanation of symbols]

 Reference Signs List 1 air bag device 2 trim cover 2a front cover portion of trim cover 2b side cover portion of trim cover 3 break portion of trim cover 4 bag pad 5 opening of back pad 6 fastening bolt of air bag device 7 seat back frame 8 side plate 8a, 8b Cut and raised piece 8c, 8d Rear edge of side plate 9,10 Power cloth 11,12 Trim wire

Continuation of the front page F term (reference) 3B084 EC00 EC06 3B087 CD05 DE00 DE03 3D054 AA11 AA21 BB23 BB30 CC35 FF15 FF17 FF20

Claims (1)

[Claims] 1. A front cover portion of a trim cover for assembling an airbag device inside an opening provided in a side portion of a back pad and attaching the airbag device to a side plate of a seat back frame, and enclosing the equipment side of the airbag device. An airbag that can be inflated and deployed outward with the output pressure generated by the inflator from the seam between the side cover and the seam between the trim cover and the inflator. A vehicle seat provided with an airbag device having: (1) one end of which is sewn together at a seam to be a break portion of the trim cover, and (2) two less-stretched webbings are provided inside the trim cover, and the webbing is trimmed Divide into two directions from the seam that will be the break part of the cover, and one is drawn inward from the opening of the back pad, A trim wire attached to the other end of the webbing is hooked to a cut-and-raised piece provided on a side surface near a front portion of the side plate and fixed to the terminal, and the other is wound from the front side of the airbag device to the rear side of the back pad. At the same time, the airbag device attached to the side plate of the seat back frame is hooked to the end edge of the side plate extending to the rear of the seat back frame, and the trim wire attached to the other end of the webbing is fixed to the end edge of the side plate. A vehicle seat provided with a side airbag device, wherein the vehicle seat is wrapped and accommodated by two webbings.