JPH0971213A - Seat structure provided with air bag device for side collision - Google Patents

Abstract

PROBLEM TO BE SOLVED: To have an air bag body developed quickly with a simple structure. SOLUTION: An air bag device 14 is arranged inside of the side part 12A of the seat back 12 of a seat 10, and the lid part 22 of an air bag case 16 expands in the direction of a seat outside centering around the hinge shaft 28A of a hinge part 28. A triangular pyramid-like projection 30 is formed on the top end part of a seat front outside edge part 22A of a lid part 22. This projection 30 is formed in such a position where a distance between a seam 34 as the plan of design of a seat surface cover 32 and the air bag device 14 is made minimum and the tip end part 30A of the projection 30 faces to the seam 34.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat structure including a side impact airbag device, and more particularly to a seat structure including a side impact airbag device on a side portion of a seat back frame.

[0002]

2. Description of the Related Art Conventionally, a structure as shown in FIGS. 5 and 6 is known as an example of a seat structure provided with a side impact airbag device.

As shown in FIG. 5, in the seat structure provided with the side impact airbag device, a box-shaped airbag device 74 is disposed in the side portion 72A of the seat back 72 of the seat 70.

As shown in FIG. 6, an airbag case 76 of the airbag device 74 is fixed to a side portion 78A of a seatback frame 78, and a portion of the airbag case 76 opposite to the seatback frame 78. Serves as a lid portion 76A. The lid portion 76A is adapted to be deployed in the seat outer direction (the arrow W direction in FIG. 6) around the hinge portion 76B by the deployment of the airbag 80.

Further, as shown in FIG. 5, in the seat structure provided with this side impact airbag device, the edge portion 8 is provided at a portion of the seat skin 82 which faces the front side edge portion 84 of the lid portion 76A.
4, a seam 86 that is easily broken when pressed by the lid 76A is provided in advance.

[0006]

However, in the seat structure provided with the airbag device for side impact, the lid portion 76 is used.
By pressing the portion of the seam 86 facing the edge portion 84 in the entire edge portion 84 of A, the seam 86 is destroyed and the airbag bag 80 is deployed. Therefore, in order to instantly break the seam 86 and deploy the airbag 80 in a short time, the stitching force of the seam 86 is made extremely weak, or the deploying force of the lid portion 76A is increased, so that the inflator is inflated. A complicated configuration such as improving the performance of 84 has been required.

In view of the above facts, it is an object of the present invention to obtain a seat structure including a side impact airbag device capable of quickly deploying an airbag body with a simple structure.

[0008]

According to the present invention as set forth in claim 1, an airbag device mounted on a side portion of a seat back frame is actuated at the time of a side collision, and a seam of a seat skin is destroyed to form an airbag bag. A seat structure including a side impact airbag device configured to be deployed is characterized in that a protrusion facing a seam of a seat skin is formed on a part of a lid portion of an airbag case.

Therefore, in the seat structure provided with the airbag apparatus for side impact according to the first aspect of the present invention, when the airbag apparatus is actuated at the time of a side impact, the lid portion of the airbag case is unfolded and the lid portion The protrusion formed on the portion contacts the seam of the seat skin. At this time, the force of the lid portion concentrates on the protrusions, so that the protrusions easily bite into the seam of the seat skin and destroy it, and the entire seam is instantly torn from this point.

According to a second aspect of the present invention, in the seat structure including the airbag apparatus for side impact according to the first aspect, the projection has a lid in which the distance between the designed seam and the airbag apparatus is minimized. It is characterized in that it is formed at the upper end of the part.

Therefore, in the seat structure provided with the airbag apparatus for side impact according to the second aspect of the present invention, when the airbag apparatus is actuated during a side impact, the protrusion instantly abuts on the designed seam of the seat skin. . At this time, the force of the lid portion concentrates on the protrusions, so that the protrusions easily bite into the design seam of the seat surface, destroy this, and from this point, the entire design seam is instantly torn.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a seat structure equipped with a side impact airbag device of the present invention will be described with reference to FIGS.

As shown in FIG. 1, in the seat structure including the side collision airbag device of the present embodiment, a vertical direction is provided in a side portion 12A formed outside the seat back of the seat 10 in the vehicle width direction. A box-shaped airbag device 14 extending in the direction of the arrow is arranged.

As shown in FIG. 2, the airbag case 16 of the airbag device 14 is fixed to the side portion 18A of the seat back frame 18 by fixing means such as bolts (not shown). A portion of the airbag case 16 opposite to the attachment portion 20 to the seat back frame 18 is a lid portion 22.

An air bag body 24 is stored in the air bag case 16 in a folded state, and the air bag body 24 is ejected from an inflator 26 provided in the air bag case 16. It is designed to be developed by gas.

The rear portion of the lid portion 22 is connected to the rear portion of the mounting portion 20 by a hinge portion 28, and the airbag bag 2
4 is expanded in the seat outer direction (direction of arrow A in FIG. 2) around the hinge shaft 28A of the hinge portion 28.

As shown in FIG. 1, a triangular pyramidal projection 30 is formed on the upper end of the seat front outer edge 22A of the lid 22.

As shown in FIG. 3, the projection 30 is formed at a position where the distance between the designed seam 34 and the airbag device 14 is minimized, and the tip portion 3 of the projection 30 is formed.
0A faces the seam 34.

Next, the operation of the present embodiment will be described. In the seat structure including the side collision airbag device of the present embodiment, when the inflator 26 of the airbag device 14 is actuated at the time of a side collision, the gas ejected from the inflator 26 deploys the airbag bag body 24 and at the same time. When pressed by the airbag bag body 24, the lid portion 22 of the airbag case 16 expands in the direction of arrow A in FIG. 2 about the hinge shaft 28A of the hinge portion 28. By this development,
The tip portion 30A of the protrusion 30 formed on the lid portion 22 abuts on the designed seam 34 of the seat skin 32. At this time, since the force of the lid portion 22 concentrates on the tip portion 30A of the protrusion 30, the protrusion 30 easily bites into the designed seam 34 of the seat skin 32, destroys it, and starts from this point to improve the design. The entire seam 34 tears instantly.

Therefore, since the stitching force of the designed seam 34 is extremely weakened or the deploying force of the lid portion 22 is increased, a complicated structure such as improving the performance of the inflator 26 is not required, and it is simple. With the configuration, the airbag bag body 24 can be rapidly deployed.

Further, in the seat structure provided with the side impact airbag device of the present embodiment, a protrusion is formed on the upper end of the lid portion 22 where the distance between the designed seam 34 of the seat cover 32 and the airbag device 14 becomes the smallest. Since 30 is formed, when the inflator 26 of the airbag device is actuated at the time of a side impact, the projection 30 instantly bites into the designed seam 34 of the seat skin 32, destroys it, and the entire seam is instantly started from this point. Air bag body 24 in a very short time because it is torn
In addition, it is not necessary to separately set the seam 86 for deploying the airbag bag as shown in FIG. 5, so that the degree of freedom in design can be increased and the cost can be reduced.

In the above, the present invention has been described in detail with respect to specific embodiments, but the present invention is not limited to such embodiments, and various other embodiments within the scope of the present invention. It is obvious to a person skilled in the art that For example, as shown in FIG. 4, the airbag device 1
4 is moved to the rear of the side portion 12A, the protrusion 3
In addition to the designed seam 34, a seam 50 for deploying an airbag bag may be provided at a portion of the seat skin 32 facing 0. In this case, although the degree of freedom in design is not improved, the performance of the inflator 26 is improved because the stitching force of the seam 50 for deploying the airbag bag is extremely weakened or the deploying force of the lid portion 22 is increased. There is no need for a complicated structure such as improvement, and the effect that the airbag bag 24 can be rapidly deployed with a simple structure can be obtained.

Further, in the seat structure provided with the side impact airbag device of the present embodiment, the projection 30 has a triangular pyramid shape, but the shape of the projection 30 is not limited to this, and the seam can be easily broken. Other shapes may be used if they are present.

[0024]

According to the first aspect of the present invention, the airbag device mounted on the side portion of the seat back frame is actuated at the time of a side collision, and the seam of the seat skin is broken to deploy the airbag bag. In the seat structure including the configured side-impact airbag device, the airbag bag body has a simple configuration because a protrusion facing the seam of the seat skin is formed in a part of the lid portion of the airbag case. It has an excellent effect that it can be rapidly deployed.

According to a second aspect of the present invention, in the seat structure provided with the side impact airbag device according to the first aspect, the protrusion has a lid portion in which a distance between the designed seam and the airbag device is minimized. In addition to the effect of claim 1, it is not necessary to separately set the seams for deploying the airbag bag, which increases the degree of freedom in design and reduces the cost. It has an excellent effect that it can be achieved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a seat structure including a side collision airbag device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is a partially enlarged view of FIG. 2;

FIG. 4 is a perspective view showing a seat structure including a side collision airbag device according to another embodiment of the present invention.

FIG. 5 is a perspective view showing a seat structure including a side impact airbag device according to a conventional embodiment.

6 is a cross-sectional view taken along line 6-6 of FIG.

[Explanation of symbols]

 10 seat 12 seat back 12A side part 14 airbag device 16 airbag case 18 seat back frame 18A side part 22 lid part 22A edge 24 airbag bag body 28 hinge part 30 protrusion 32 seat skin 34 design stitch 50 seam

Claims (2)

[Claims] 1. An airbag device for a side impact, which is configured to operate an airbag device mounted on a side portion of a seat back frame at the time of a side impact to break a seam of a seat skin and deploy an airbag bag. A seat structure provided with a side impact airbag device, characterized in that a protrusion facing a seam of a seat skin is formed on a part of a lid portion of an airbag case. 2. The airbag apparatus for side impact according to claim 1, wherein the protrusion is formed on an upper end of a lid portion where the distance between the designed seam and the airbag apparatus is smallest. Seat structure equipped.