JPH082364A - The airbag body of the airbag device - Google Patents

Abstract

(57) [Summary] [Purpose] A strap for regulating the shape of the airbag body is formed integrally with the airbag body. The cost is reduced by simplifying the sewing work of the airbag body and straps. [Structure] An airbag body 21 is formed into a bag shape by sewing a plurality of quadrangular base cloths 23. The rectangular base cloth 23 is refracted in a substantially U-shape, and the U-shaped central portion 25 of the first rectangular base cloth 23a is attached to the end of the U-shaped side portion 26 of the other rectangular base cloth 23b. The parts are sewn in a continuous state in which they are sewn respectively. A plurality of communication holes 28 are formed in the U-shaped central portion 25 of the base fabrics 23a and 23b located inside the bag body. The U-shaped central portion 25 of each of the base cloths 23a and 23b is formed on the shape-regulating strap 27.

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 a collision of a vehicle or the like.
More specifically, it is an airbag body of an airbag device which is designed to bulge when a gas generator operates, wherein the airbag body is formed into a bag shape by sewing a plurality of base fabrics by sewing. The present invention relates to an airbag main body of the airbag device.

[0002]

2. Description of the Related Art Conventionally, an airbag device has been known as a device for protecting an occupant such as a vehicle. As the airbag device, there are disclosed in Japanese Utility Model Publication No. 2-123445 and Japanese Utility Model Publication No.
No. 43747, No. 5-71063, No. 5-16751, No. 6-1188.
There is Japanese Patent Laid-Open No. 3-248945.

A suspension belt, a strap, or a tether for shape regulation is attached to an airbag body of a conventional airbag device. For example, the suspension belt prevents the airbag body 3 from bulging in one direction toward the occupant's face when the gas generator is activated. A conventional suspension belt of an airbag body is sewn to a front side base cloth or a rear side base cloth via a belt catch or the like.

[0004]

When a hanging belt, a strap, or a tether for shape regulation is provided in the airbag body of a conventional airbag device, the hanging belt, the strap, or the tether is separated from the airbag body. Are formed in the air bag, and these are joined by sewing, and since the hanging belt, the strap, or the tether is located inside the airbag body, the sewing work is complicated and the workability is poor, and the cost of parts increases, It lacked economy.

An object of the present invention is to form a strap for regulating the shape of an airbag body integrally with a base cloth of the airbag body, to reliably regulate the shape of the airbag body, and to sew the airbag body and the strap. It is intended to provide an airbag main body of an airbag device which can reduce cost by improving the cost efficiency, improve economy, and have excellent safety.

[0006]

The present invention has been made in view of the above-mentioned problems, and the airbag body of the airbag device according to claim 1 of the present invention has a bag formed by sewing a plurality of base fabrics. In the airbag body of the airbag device, which is formed into a bulge shape and swells when the gas generator operates, the airbag body bends a plurality of quadrangular base fabrics into a substantially U-shape, and The base fabric that is positioned inside the bag body is sewn in a continuous state in which the U-shaped center fabric of the square base fabric is sewn to the U-shaped ends of the other square base fabric. A plurality of communication holes are formed in the central portion of the U-shape, and the central portion of the U-shape of the base cloth located inside the bag body is formed on the shape-regulating strap.

Further, the airbag main body of the airbag device according to claim 2 of the present invention is formed into a bag shape by sewing a plurality of base fabrics, and bulges when the gas generator is activated. In the airbag body of the airbag device, the airbag body refracts a plurality of quadrilateral base fabrics into a substantially U-shape, and the other quadrilateral shape is formed in a central portion of the U-shape of the first quadrilateral base fabric. The U-shaped end portions of the base cloth are sewn in a continuous state in which they are sewn, respectively, and the U-shaped end portions of the first quadrangular base cloth are sewn together, and the base member positioned inside the bag body is sewn. A plurality of communication holes are formed in the central portion of the U-shape of the cloth, and the central portion of the U-shape of the base cloth located inside the bag body is formed on the shape regulating strap, and the side portion of the bag body is formed. The upper and lower base fabrics are sewn to the upper and lower open portions of the above, respectively.

[0008]

According to the airbag body of the airbag device of the present invention, the plurality of quadrilateral base fabrics are bent into a substantially U-shape so that the first quadrilateral base fabric has a U-shape. The other end of the square-shaped base cloth is sewn in a continuous state in the center of the base cloth, and a plurality of U-shaped center parts of the base cloth inside the bag are sewn in a continuous state. Since the communication hole is formed and the U-shaped central portion of the base fabric located inside the bag body is formed on the shape regulating strap, it is not necessary to separately form the shape regulating strap, and the strap is not necessary. It is possible to omit the work of sewing the air bag body to the airbag body, and it is possible to easily and quickly perform the sewing work.

According to the airbag body of the airbag device of the second aspect of the present invention, the plurality of quadrangular base fabrics are bent into a substantially U-shape, and the first quadrilateral base fabric is U-shape. In the central part of the other square base cloth, the U-shaped ends of the square base cloth are sewn in a continuous state, and the U-shaped ends of the first square base cloth are sewn together. A plurality of communication holes are formed in the central portion of the U-shape of the base cloth located inside the bag body, and the central portion of the U-shape of the base cloth located inside the bag body is formed on the shape-regulating strap. Since the upper and lower base fabrics are sewn to the upper and lower open portions of the side portion of the bag body, it is not necessary to separately form a strap for shape regulation, and the work of sewing the strap to the airbag body is omitted. Therefore, the sewing work can be performed simply and quickly.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An airbag body of an airbag device according to the present invention will be described below in detail with reference to the drawings. Figure 1 (a),
(B), FIG. 2 and FIG. 3 respectively show the outline of one embodiment of the airbag body of the airbag device according to the present invention. In the airbag device 11, the fixed side to which the base plate is attached is the door 10 side. However, it may be on the instrument panel side or the steering side, and it may be attached at an appropriate position such as the back of the seat back.

As shown in FIG. 3, the air bag device 11 includes a gas generator 13 fixed to a base plate by fixing members such as bolts and nuts. Airbag body 2
Similarly to the gas generator 13, 1 is fixed to the base plate via a retainer by fixing members such as bolts and nuts.

As shown in FIGS. 1A and 1B, the airbag body 21 of the airbag device 11 is formed in a bag shape from a plurality of quadrangular base cloths 23. In this embodiment, as the plurality of base cloths 23, three square base cloths 23a, 2 are used.
Although 3b and 23c are used, four or more base cloths 23 can be used.

Each of the plurality of quadrangular base fabrics 23 is bent or curved in a substantially U-shape to form the first quadrangular base fabric 2.
3a has a square-shaped central portion 25 and the following square-shaped base cloth 23b.
The end portions 26a of the U-shaped side portions 26 are sewn in a continuous state in which they are sewn.

A plurality of communication holes 28 are formed in the U-shaped central portions 25 of the base cloths 23a and 23b whose central portions 25 are located inside the bag body, and the base cloth 23 located inside the bag body is formed.
A U-shaped central portion 25 of a and 23b is formed on a strap 27 for shape regulation.

In this embodiment, three square base cloths 2 are used.
Although 3a, 23b and 23c are formed in substantially the same shape, they may be formed in different sizes. For example, it is possible to form only the quadrangular base cloth 23a larger than the other base cloth so that the bag body does not become small when the both end portions 26a, 26a are sewn. In addition, both ends 26a, 26a
It is also possible to sew a base cloth of the same size as the strap 27 to the bag and make the size of the bag divided by the strap 27 uniform. The size, shape, etc. of the plurality of communication holes 28 are not limited to those shown in the figures, and various modifications and changes can be made.

A gas ejection opening 31 is formed on the lower side of the central base cloth 23b, and a small hole 32 for inserting a bolt is formed along the outer periphery of the gas ejection opening 31. The gas generator 13 is attached to the gas ejection opening 31.

As shown in FIG. 1 (b), one end portion 25a of the square-shaped central portion 25 of the first square-shaped base cloth 23a is attached to one end portion 26a of the square-shaped square-shaped base cloth 23b. End 26a of
Are sewn on to form a sewn portion 41, and then the base cloth 23b
The end portion 25a of the square-shaped base cloth 23c is sewn to the end portion 25a of the U-shaped central portion 25, and the sewn portion 42 is formed.

Next, the end portion 26b of the U-shaped one side portion 26 of the quadrangular base cloth 23c is sewn to the end portion 25b of the U-shaped central portion 25 of the base cloth 23b, and the sewn portion. 43 is formed, and then the end portion 26b of the U-shaped one side portion 26 of the next square-shaped base cloth 23b is sewn to the end portion 25b of the U-shaped central portion 25 of the first square-shaped base cloth 23a. Then, the sewing portion 44 is formed.

As shown in FIG. 2, the first rectangular base fabric 2
The ends 26a and 26b of the U-shaped side portions 26 of 3a are sewn to form a sewn portion 46. Further, the upper and lower open portions 51 and 52 on the side portions of the bag body are sewn to form the sewn portions 53 and 54, and the airbag body 21 is formed into a bag shape.

It is also possible to sew a reinforcing cloth separately formed on the gas ejection opening 31 on the lower side of the central base cloth 23b.

FIG. 4 and FIG. 5 show different embodiments of the present invention. The parts corresponding to those of the above-mentioned embodiments are designated by the same reference numerals and the detailed description thereof will be omitted.
The upper and lower base cloths 5 are attached to the upper and lower open portions 51 and 52 of the side portions of the bag body.
6, 57 are sewn on the lower base cloth 57, and the gas ejection openings 3
1 and a small hole 32 for inserting a bolt are formed, and have the same configuration as the above-described embodiment.

The U-shaped central portion 2 of the base fabrics 23a and 23b located inside the bag body constituting the airbag body 21.
Since 5 is formed on the shape regulating strap 27, it is not necessary to separately form the shape regulating strap 27, and the work of sewing the strap 27 inside the airbag main body 21 can be omitted. Wearing work can be performed simply and quickly.

[0023]

The above is the configuration of one embodiment of the airbag body of the airbag apparatus according to the present invention. According to the airbag body of the airbag apparatus according to claim 1 of the present invention, a plurality of airbag bodies are provided. A square base fabric is bent into a substantially U-shape, and the U-shaped ends of the other square base fabrics are sewn to the center of the U-shape of the first square base fabric. Sewn in a state, a plurality of communication holes are formed in the central portion of the base cloth located inside the bag, and the central portion of the base cloth located inside the bag is shaped. Since it is formed on the regulation strap, it is not necessary to separately form a shape regulation strap, the work of sewing the strap to the airbag body can be omitted, and the sewing work can be performed easily and quickly. it can.

According to the airbag main body of the airbag device of the second aspect of the present invention, the plurality of quadrangular base fabrics are bent into a substantially U-shape so that the first quadrilateral base fabric U-shape is bent. The U-shaped ends of the other square-shaped base cloth are sewn in a continuous state with the center-shaped portion of the other square-shaped cloth being sewn on, and the U-shaped ends of the first square-shaped base cloth are And a plurality of communication holes are formed in the central portion of the base cloth positioned inside the bag body, and the central portion of the base cloth position inside the bag body is a strap for shape regulation. Since the upper and lower base fabrics are sewn to the upper and lower open portions of the side of the bag body respectively, it is not necessary to separately form a strap for shape regulation, and the work of sewing the strap to the airbag body can be performed. It can be omitted, and the sewing work can be performed simply and quickly.

According to the present invention, the strap for controlling the shape of the airbag body is formed integrally with the airbag body, and the shape of the airbag body can be regulated reliably, and the sewing work of the airbag body and the strap is simplified. As a result, the cost can be reduced, the economical efficiency can be improved, and the airbag body of the airbag device having excellent safety can be obtained.

[Brief description of drawings]

1A and 1B show a main structure of an airbag body of an airbag device according to the present invention, in which FIG. 1A is a front view of a base cloth before sewing, and FIG. 1B is a state in which side portions of the base cloth are sewn. FIG.

FIG. 2 is a perspective view of a state in which the upper and lower open portions of the side portion of the airbag body of the airbag device according to the present invention are sewn.

FIG. 3 is a cross-sectional view of a state in which the airbag device according to the present invention is incorporated in a vehicle.

FIG. 4 is an exploded perspective view showing another embodiment of the airbag body according to the present invention.

FIG. 5 is a perspective view showing another embodiment of the airbag body according to the present invention.

[Explanation of symbols]

 10 Door 11 Airbag Device 13 Gas Generator 21 Airbag Body 23 Base Fabric 23a Base Fabric 23b Base Fabric 23c Base Fabric 25 Center Part 26 Side Part 27 Strap 28 Communication Hole 31 Gas Outlet Opening 41 Sewing Part 42 Sewing Part 43 Sewing Part 44 Sewing part 46 Sewing part 51 Opening part 52 Opening part 53 Sewing part 54 Sewing part 56 Base cloth 57 Base cloth

Claims (2)

[Claims] 1. A plurality of base fabrics are sewn to form a bag,
In an airbag body of an airbag device which is designed to swell when the gas generator is activated, the airbag body bends a plurality of quadrangular base fabrics into a substantially U-shape to form a first quadrangular base. The U-shaped end of the other square base cloth is sewn to the center of the U-shape of the cloth in a continuous state. A plurality of communication holes are formed in a central portion, and a U-shaped central portion of the base fabric located inside the bag body is formed on a strap for shape regulation, which is an airbag of an airbag device. Body. 2. A plurality of base cloths are sewn to form a bag,
In an airbag body of an airbag device that is designed to bulge when a gas generator operates, the airbag body bends a plurality of quadrangular base fabrics into a substantially U-shape to form a first quadrangular base. The U-shaped central part of the cloth is sewn in a continuous state in which the U-shaped ends of the other square-shaped base fabrics are sewn respectively, and the U-shaped end parts of the first square-shaped base fabric Are sewn together, a plurality of communication holes are formed in the central portion of the base cloth located inside the bag, and the central portion of the base cloth located inside the bag is regulated in shape. Formed on the strap for
An airbag body of an airbag device, wherein upper and lower base fabrics are sewn to upper and lower open portions of side portions of the bag body, respectively.