JPH10166981A - Air bag main body of air bag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the positioning when a sewing part for form regulation is formed, generate no position slippage as well as to obtain a desired swelling form of an air bag main body, and carry out the sewing work simply and rapidly, by preventing the generation of a large wrincle around the sewing part for form regulation, when the air bag main body is developed and inflated. SOLUTION: Plural through holes 21 and 21, or slits are formed to plural base cloths 12 and 13 opposing each other respectively, in the condition sewing the outer peripheral edges 12a and 13a of the base cloths 12 and 13 each other. A sewing part 23 is formed by sewing to surround the outer peripheral edges of the through holes 21 and 21, or the slits of the plural base cloths 12 and 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag body of an airbag device for protecting an occupant in the event of an automobile collision. More specifically, the present invention relates to an airbag body formed by sewing outer peripheral edges of a plurality of base fabrics. The present invention relates to an airbag body of an airbag device to be used.

[0002]

2. Description of the Related Art Conventionally, an airbag device has been known as a device for protecting a vehicle occupant. As the airbag device, there is known an airbag device attached to an instrument panel or a steering wheel, as well as a door or a seatback. When an impact is detected by the airbag device, the gas generator is activated, and the gas instantaneously flows into the airbag body and instantaneously inflates the airbag body toward the occupant.

As shown in FIGS. 4 (a) and 4 (b), an airbag device is fixed such that gas ejected from the gas generator flows in when a gas generator (not shown) is operated. A main body 11 is provided. Airbag body 11
As shown in FIG. 4B, outer peripheral edges 12a and 13a of a plurality of base fabrics 12 and 13 are sewn together to form a sewn portion 15.

Openings forming gas inlets 14 are formed at the ends of the plurality of base fabrics 12 and 13, and the same function as a suspension belt is provided at the center of the plurality of base fabrics 12 and 13. A sewing portion 16 for regulating the shape is formed so as to sew the plurality of base fabrics 12 and 13 together.

[0005]

However, when the shape-regulating sewn portions 16 are formed on the plurality of base fabrics 12 and 13 of the airbag body 11, when the airbag body 11 is deployed and inflated, the shape is restricted. Large wrinkles are generated around the sewn portion 16, and the desired shape of the airbag body may not be obtained. In addition, positioning when forming the sewing portion 16 for shape regulation is difficult, and there is a possibility that a positional shift may occur.

SUMMARY OF THE INVENTION It is an object of the present invention to prevent a large wrinkle from being generated around a sewing portion for shape regulation when the airbag body is deployed and inflated, and to obtain a desired inflated shape of the airbag body. The present invention also provides an airbag body of an airbag device that can perform sewing work easily and quickly without the possibility of misalignment due to easy positioning when forming a sewing portion for shape regulation. It is.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an airbag body of an airbag device according to the first aspect of the present invention is configured to sew outer peripheral edges of a plurality of base cloths. In the airbag body of the airbag device formed by wearing, through holes are respectively formed in a plurality of base fabrics facing each other in a state where outer peripheral edges of the plurality of base fabrics are sewn,
An outer peripheral edge of the through hole between the plurality of base fabrics is sewn.

According to a second aspect of the present invention, there is provided an airbag body of an airbag device formed by sewing outer peripheral edges of a plurality of base fabrics.
Slits are respectively formed in a plurality of base fabrics facing each other in a state where the outer circumferential edges of the plurality of base fabrics are sewn, and the outer circumferential edges of the slits of the plurality of base fabrics are sewn. And

According to a third aspect of the present invention, there is provided an airbag body of an airbag device formed by sewing outer peripheral edges of a plurality of base fabrics together.
A plurality of through holes are respectively formed in a plurality of base fabrics facing each other in a state where the outer circumferential edges of the plurality of base fabrics are sewn, and the outer circumferential edges of the through holes of the plurality of base fabrics are respectively sewn. It is characterized by having.

According to a fourth aspect of the present invention, there is provided an airbag body of an airbag device formed by sewing outer peripheral edges of a plurality of base fabrics together.
A plurality of slits are respectively formed in a plurality of base fabrics facing each other in a state where the outer circumferential edges of the plurality of base fabrics are sewn, and the outer circumferential edges of the slits of the plurality of base fabrics are sewn respectively. It is characterized by the following.

According to a fifth aspect of the present invention, there is provided an airbag body of an airbag device formed by sewing outer peripheral edges of a plurality of base fabrics.
A plurality of through-holes are respectively formed in a plurality of base cloths facing each other in a state where outer peripheral edges of the plurality of base cloths are sewn, slits are formed between the plurality of through-holes, and the plurality of base cloths are formed. A sewn portion is formed so as to surround the outer peripheral edges of the plurality of through holes and the slits of the cloths.

According to the airbag body of the airbag device according to the first aspect of the present invention, through holes are respectively formed in the plurality of base fabrics facing each other while the outer peripheral edges of the plurality of base fabrics are sewn. Since the outer peripheral edges of the through holes of the plurality of base fabrics are sewn, the through holes are deformed when the airbag body expands, thereby absorbing the stress and preventing the airbag body from wrinkling. As a result, a desired inflated shape of the airbag body can be obtained.

According to the airbag body of the airbag device according to the second aspect of the present invention, slits are respectively formed in the plurality of base fabrics facing each other while the outer peripheral edges of the plurality of base fabrics are sewn. Since the outer peripheral edge of the slit between the plurality of base fabrics is sewn, the slit is deformed when the airbag body expands, thereby absorbing the stress and preventing the airbag body from wrinkling. Swelling shape of the airbag body can be obtained.

According to the airbag body of the airbag device according to the third aspect of the present invention, the plurality of through-holes are formed in the plurality of base fabrics facing each other while the outer peripheral edges of the plurality of base fabrics are sewn. Since the outer edges of the plurality of through holes of the plurality of base fabrics are respectively sewn, the stress is absorbed by deformation of the plurality of through holes when the airbag body expands,
The generation of wrinkles in the airbag body can be prevented, and a desired bulging shape of the airbag body can be obtained.

According to the airbag body of the airbag device of the fourth aspect of the present invention, the plurality of slits are respectively formed in the plurality of base fabrics facing each other while the outer peripheral edges of the plurality of base fabrics are sewn. Since the outer edges of the slits between the plurality of base fabrics are formed and sewn, the plurality of slits are deformed when the airbag body inflates to absorb the stress,
The generation of wrinkles in the airbag body can be prevented, and a desired bulging shape of the airbag body can be obtained.

According to the airbag body of the airbag device according to the fifth aspect of the present invention, a plurality of through-holes are formed in a plurality of base fabrics facing each other while the outer peripheral edges of the plurality of base fabrics are sewn. Since each is formed, a slit is formed between the plurality of through holes, and a sewing portion is formed so as to surround the outer peripheral edge of the plurality of through holes and the outer peripheral edge of the slit between the plurality of base fabrics. The plurality of through-holes and slits are deformed when the airbag body is inflated, thereby absorbing the stress, preventing wrinkles from occurring in the airbag body, and obtaining a desired inflated shape of the airbag body.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an airbag body of an airbag device according to the present invention will be described in detail with reference to the drawings. FIG.
4A and 4B show an embodiment of the airbag body of the airbag device according to the present invention, respectively, and FIG.
Parts corresponding to (a) and (b) will be described with the same reference numerals.

The airbag body 11 includes a plurality of base fabrics 12,1.
The outer peripheral edges 12a and 13a of the third 3 are sewn together to form a sewn portion 15. Openings forming gas inlets 14 are formed at the ends of the plurality of base cloths 12 and 13.

The outer peripheral edge 12 of the plurality of base fabrics 12, 13
a, 13a are formed with through holes 21 formed of long holes so as to penetrate through the central sides of the plurality of base fabrics 12, 13 facing each other in a state where the base fabrics 12, 13a are sewn together.
The outer peripheral edges of the through holes 21 are sewn to form a sewn portion 23 for shape regulation by double stitching.

As shown in FIG. 2, a circular through-hole 21 may be used instead of the through-hole 21 having the elongated hole.
Other various through holes can be used. Further, a hanging belt may be separately provided together with the sewing portion 23 for shape regulation.

3 (a) and 3 (b) show different embodiments of the present invention, respectively. In the embodiment shown in FIG. 3 (a), In this embodiment, a plurality of circular through-holes 21 are provided, and two circular through-holes 21 are provided, and a sewing portion 23 is formed so as to surround the two circular through-holes 21 and 21.

In the embodiment shown in FIG.
A plurality of circular through holes 21 penetrating the central side of the plurality of base cloths 12 and 13 are provided, two in this embodiment, and two circular through holes 21 are connected so as to connect the two circular through holes 21. A slit 25 is formed between the through holes 21, 21, and a sewing portion 23 is formed so as to surround the outer peripheral edge of the through holes 21, 21 and the outer peripheral edge of the slit 25.

A slit having a length corresponding to the long hole is used instead of the through hole 21 composed of the long hole and the two circular through holes 21 and 21 shown in FIGS. 1 (a) and 3 (a). Or 2
A slit having a length corresponding to the length of each of the circular through holes 21 and 21 can also be used.

When forming the sewn portion 23 on the outer peripheral edge of the through hole 21 of the plurality of base cloths 12, 13, the positioning at the time of sewing can be easily performed by using the through hole 21 as a location.

[0025]

The above is an embodiment of the airbag body of the airbag apparatus according to the present invention.
According to the airbag body of the airbag device described in above, through holes are respectively formed in the plurality of base cloths facing each other in a state where the outer peripheral edges of the plurality of base cloths are sewn, and the plurality of base cloths are connected to each other. Since the outer peripheral edge of the through hole is sewn, the through hole is deformed when the airbag body expands, thereby absorbing the stress and preventing the airbag body from wrinkling. Bulging shape can be obtained.

According to the airbag body of the airbag device according to the second aspect of the present invention, a plurality of slits are respectively formed in the plurality of base cloths facing each other while the outer peripheral edges of the plurality of base cloths are sewn. Since the outer peripheral edge of the slit between the plurality of base fabrics is sewn, the slit is deformed when the airbag body expands, thereby absorbing the stress and preventing the airbag body from wrinkling. Swelling shape of the airbag body can be obtained.

According to the airbag body of the airbag device according to the third aspect of the present invention, the plurality of through-holes are formed in the plurality of base fabrics facing each other while the outer peripheral edges of the plurality of base fabrics are sewn. Since the outer edges of the plurality of through holes of the plurality of base fabrics are respectively sewn, the stress is absorbed by deformation of the plurality of through holes when the airbag body expands,
The generation of wrinkles in the airbag body can be prevented, and a desired bulging shape of the airbag body can be obtained.

According to the airbag body of the airbag device according to the fourth aspect of the present invention, the plurality of slits are respectively formed in the plurality of base fabrics facing each other while the outer peripheral edges of the plurality of base fabrics are sewn. Since the outer edges of the slits between the plurality of base fabrics are formed and sewn, the plurality of slits are deformed when the airbag body inflates to absorb the stress,
The generation of wrinkles in the airbag body can be prevented, and a desired bulging shape of the airbag body can be obtained.

According to the airbag body of the airbag device according to the fifth aspect of the present invention, a plurality of through-holes are formed in a plurality of base fabrics facing each other while the outer peripheral edges of the plurality of base fabrics are sewn. Since each is formed, a slit is formed between the plurality of through holes, and a sewing portion is formed so as to surround the outer peripheral edge of the plurality of through holes and the outer peripheral edge of the slit between the plurality of base fabrics. The plurality of through-holes and slits are deformed when the airbag body is inflated, thereby absorbing the stress, preventing wrinkles from occurring in the airbag body, and obtaining a desired inflated shape of the airbag body.

According to the present invention, it is possible to prevent a large wrinkle from being generated around the shape-regulating sewing portion when the airbag body is deployed and inflated, and to obtain a desired inflated shape of the airbag body. In addition, it is possible to obtain an airbag body of an airbag device in which sewing can be easily and quickly performed without the possibility of misalignment due to easy positioning when forming a sewing portion for shape regulation. it can.

[Brief description of the drawings]

FIGS. 1A and 1B show an airbag body of an airbag device according to the present invention, wherein FIG. 1A is a front view, and FIG.
-A line sectional drawing.

FIG. 2 is a partial front view showing a modified example of the through hole of the airbag body according to the present invention.

FIGS. 3A and 3B show a modified example of a through hole of an airbag body according to the present invention, wherein FIG. 3A is a partial front view, and FIG.

4A and 4B show an airbag body of a conventional airbag device, where FIG. 4A is a front view, and FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Airbag main body 12 Base cloth 12a Outer perimeter 13 Base cloth 13a Outer perimeter 14 Gas inlet 15 Sewing part 21 Through hole 23 Sewing part 25 Slit

Claims (5)

[Claims] 1. An airbag body of an airbag device formed by sewing outer peripheral edges of a plurality of base fabrics, wherein the plurality of base fabrics oppose each other while the outer peripheral edges of the plurality of base fabrics are sewn together. An airbag body of an airbag device, wherein a through hole is formed in each of the base fabrics, and outer peripheral edges of the through holes of the plurality of base fabrics are sewn. 2. An airbag body of an airbag device formed by sewing outer peripheral edges of a plurality of base fabrics, wherein the plurality of base fabrics oppose each other with the outer peripheral edges of the plurality of base fabrics sewn together. The airbag body of the airbag device, wherein a slit is formed in each of the base fabrics, and outer peripheral edges of the slits of the plurality of base fabrics are sewn. 3. An airbag body of an airbag device formed by sewing outer peripheral edges of a plurality of base fabrics, wherein the plurality of base fabrics oppose each other with the outer peripheral edges of the plurality of base fabrics sewn together. A plurality of through holes are respectively formed in the base cloth, and outer peripheral edges of the through holes of the plurality of base cloths are sewn, respectively. 4. An airbag body of an airbag device formed by sewing outer peripheral edges of a plurality of base cloths, wherein the plurality of base cloths oppose each other with the outer peripheral edges of the plurality of base cloths sewn together. A plurality of slits are respectively formed in the base cloth, and outer peripheral edges of the slits of the plurality of base cloths are sewn to each other. 5. An airbag body of an airbag device formed by sewing outer peripheral edges of a plurality of base cloths, wherein the plurality of base cloths oppose each other with the outer peripheral edges of the plurality of base cloths sewn together. A plurality of through holes are respectively formed in the base cloth, a slit is formed between the plurality of through holes, and sewing is performed so as to surround an outer peripheral edge of the plurality of through holes and an outer peripheral edge of the slit between the plurality of base cloths. An airbag body of an airbag device, wherein a fitting portion is formed.