JPH09309399A - Air bag device for side collision of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To integrally form a head protection part and a chest protection part of an air bag main body, prevent the head protection part of the air bag main body from breaking a pane of side window glass, and from being pushed outside, concurrently support the air bag main body stably, and shorten time required by the development of the air bag main body. SOLUTION: An air bag device 31 for the side collision of a vehicle is provided for the side part of a seat 11. The air bag device 31 is equipped with paired upper and lower air bag modules 31A and 31B, and also paired gas generators 32A and 32B, which are provided for the upper and lower positions over the side of a seat back 13, and an air bag main body 35 includes a head protection part 35a and a chest protection part 35b, which are formed in series. The head protection part 35a and the chest protection part 35b are partially divided by a sewed part formed in the air bag main body 35.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle side impact airbag device, and more specifically, a gas generator provided on a side portion of a seat and the gas generator when the gas generator is activated. An airbag apparatus for a side collision of a vehicle, comprising: an airbag main body fixed so that gas ejected from the inside of the airbag body is fixed.

[0002]

2. Description of the Related Art Conventionally, in order to avoid a direct impact between a side wall of a vehicle body such as a door and a seated person, which is deformed by an impact load when a side collision of a vehicle occurs, various airbag devices have been used. It has been proposed, for example, a vehicle seat structure as disclosed in Japanese Patent Laid-Open No. 4-50052, and Japanese Patent Laid-Open No. 6-64.
There is an airbag device as shown in Japanese Patent No. 491, and an airbag for side impact as shown in Utility Model Registration No. 3014439 (issued on August 8, 1995).

The side impact airbag disclosed in Japanese Utility Model Registration No. 3014439, as shown in FIG. 6, is integrally formed so as to cover the head side surface 2a of the occupant 2 and the upper body side surface 2b. 1 is formed. Reference numeral 5 is a seat back, 5a is a headrest,
Reference numerals 7 denote gas generators, respectively.

[0004]

However, in such a conventional technique, it is not possible to sufficiently cover the head side surface 2a and the upper body side surface 2b of the occupant 2 with the airbag 1, and one gas is used. Large airbag 1 on the generator 7 side
Therefore, the stability of the airbag is poor, and the time required for deploying the airbag 1 is too long with one gas generator 7, so that rapid deployment and swelling of the airbag 1 cannot be obtained. It is not possible to obtain sufficient restraint force for the occupant when the driving posture becomes oblique. Further, when the head side surface 2a and the upper body side surface 2b of the occupant 2 are individually restrained by separate airbag devices, the airbag restraining the occupant's head side surface 2a damages the side window glass and the outside. There was a risk of going out.

According to the present invention, the head protecting portion and the chest protecting portion of the airbag body are integrally formed, and there is no fear that the head protecting portion of the airbag body will break the side window glass and go outside. ,
The airbag body can be stably supported, the time required for deploying the airbag body can be shortened, the airbag body can be rapidly deployed and swollen, and sufficient occupant restraint force can be obtained. An object of the present invention is to provide an airbag device for a side collision of a vehicle, which is excellent in safety.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a vehicle side collision airbag apparatus according to claim 1 of the present invention is a gas provided on a side portion of a seat. An airbag apparatus for a side collision of a vehicle, comprising: a generator; and an airbag body fixed so that gas ejected from the gas generator flows in when the gas generator is activated. Has a head protection part and a chest protection part formed in series, and the head protection part and the chest protection part are divided by a sewing part formed in the airbag body.

According to a second aspect of the present invention, there is provided a vehicle side-impact airbag apparatus in which a gas generator provided on a side portion of a seat and a gas ejected from the gas generator when the gas generator is operated. A side collision airbag device for a vehicle, comprising: an airbag main body fixed so as to flow into the vehicle body, wherein the side collision airbag device comprises a pair of upper and lower sides provided at upper and lower positions of a side portion of a seat back. An airbag module is provided, and the airbag body has a head protection portion and a chest protection portion formed in series, and the head protection portion and the chest protection portion are separated by a sewing portion formed in the airbag body. Is
The airbag main body is attached to a pair of upper and lower airbag modules provided on a side portion of the seat back.

According to a third aspect of the present invention, there is provided a side collision airbag device for a vehicle, wherein a gas generator provided on a side portion of a seat and a gas ejected from the gas generator when the gas generator is operated. A side collision airbag device for a vehicle, comprising: an airbag main body fixed so as to flow into the vehicle body, wherein the side collision airbag device comprises a pair of upper and lower sides provided at upper and lower positions of a side portion of a seat back. An airbag module is provided, and the airbag body has a head protection portion and a chest protection portion formed in series, and the head protection portion and the chest protection portion are formed by a sewing portion formed on the airbag body. It is characterized by being divided into parts.

According to the vehicle side impact airbag device of the present invention, the airbag body has the head protecting portion and the chest protecting portion formed in series, and the head protecting portion is provided. Since the part of the head and the chest protector are separated by the sewn part formed on the airbag body, only the head protector does not have the risk of damaging the side window glass to the outside, and the head protector and the chest protector. The gas from the gas generator is quickly supplied to the protective portion, the airbag main body can be rapidly expanded and swollen, and a sufficient occupant restraining force can be obtained.

According to the second aspect of the present invention, there is provided a vehicle side impact airbag device including a pair of upper and lower airbag modules provided at upper and lower positions of a side portion of the seat back.
The airbag body has a head protection portion and a chest protection portion formed in series, the head protection portion and the chest protection portion are separated by the sewing portion formed in the airbag body, the seat back of Since the airbag body is attached to the pair of upper and lower airbag modules provided on the side portions, it is possible to stably support the airbag body, and only the head protection portion damages the side window glass. The gas from the gas generators of the pair of upper and lower airbag modules is quickly supplied to the head protection part and the chest protection part, and the airbag main body can be quickly expanded and expanded. It is possible to obtain a sufficient occupant restraint force.

According to a third aspect of the present invention, there is provided a vehicle side impact airbag device including a pair of upper and lower airbag modules provided at upper and lower positions of a side portion of the seat back.
The airbag body has a head protection portion and a chest protection portion formed in a series, the head protection portion and the chest protection portion is partly divided by the sewing portion formed in the airbag body,
Since the sewn portion that partially divides the head protection portion and the chest protection portion of the airbag body is formed in a portion of the airbag body, the airbag body can be stably supported, and the head. There is no danger that only the part protection part will damage the side window glass and go out to the outside, and a sewing part that partly divides the head protection part and the chest protection part is formed in a part of the airbag body. As a result, the sewing work can be performed quickly, and the head protector and the chest protector can be quickly supplied with gas from the gas generators of the pair of upper and lower airbag modules, which allows rapid expansion and swelling of the airbag body. Therefore, sufficient restraint force for the occupant can be obtained.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle side impact airbag device according to the present invention will be described in detail below with reference to the drawings. 1 and 2 show an embodiment of a vehicle side collision airbag device according to the present invention, respectively. In this embodiment, the vehicle side collision airbag device operates a vehicle seat. Although it is described as being applied to a seat back such as a seat, a passenger seat, or a rear seat, it can be applied to a door side of a vehicle.

As shown in FIGS. 1 and 2, a vehicle seat 1
A seat cushion 12 is attached to the vehicle body floor so as to be movable back and forth through a front and rear slide mechanism 14, and a reclining mechanism 15 is provided at a rear end portion of the seat cushion 12.
The seat back 13 is supported so as to be tiltable in the front-back direction. A headrest 16 is provided above the seat back 13.

Further, a side impact airbag device 31 is attached to a side portion of the seat frame 23 of the seat back 13. The side impact airbag device 31 includes a pair of airbag modules 31A and 31B provided at upper and lower positions of a side portion of the seat frame 23. The pair of airbag modules 31A and 31B are formed into an airbag module 31A for head protection and an airbag module 31B for chest protection.

The pair of airbag modules 31A,
31B includes cylindrical gas generators 32A and 32B, respectively, and a head protector 35a and a chest protector 35b are formed in series on the gas generators 32A and 32B of the pair of upper and lower airbag modules 31A and 31B. Airbag body 35
Is installed.

The head protection portion 35a and the chest protection portion 35b
Are formed by being divided by a sewing portion 37 formed on the airbag body 35. As shown in FIG. 3A, the sewn portion 37 that separates the head protection portion 35a and the chest protection portion 35b of the airbag body 35 from each other is the airbag body 3 as shown in FIG.
The airbag body 35 is divided into two along the bulging direction of 5.

As shown in FIG. 3 (b), the communicating portion 3 is connected to a part of a sewing portion 37 formed in the airbag body 35 so that the head protecting portion 35a and the chest protecting portion 35b communicate with each other.
7a may be provided.

Further, as shown in FIG. 3 (c), a sewing portion 37 which partially divides the head protecting portion 35a and the chest protecting portion 35b of the airbag body 35 is formed in a portion of the airbag body 35. It may be one. The partially sewn portion 37 is formed on the gas injection port 38 side of the airbag body 35.

A sewn portion 37 which divides a part of the air bag body 35 regulates and guides the flow of gas from the gas generators 32A and 32B. When the gas generators 32A and 32B operate, the gas generators 32A and 32B
Gas is injected into the gas injection port 38 of the airbag body 35 from the B gas ejection port 33, and the airbag body 35 bulges from the side portion of the seat back 15.

In this embodiment, the gas outlet 32 of the gas generator 32A of the airbag module 31A is formed at the upper position, and the gas outlet 33 of the gas generator 32B of the airbag module 31B is formed at the lower position. However,
The position of the gas ejection port 33 can be turned upside down. Further, in FIG. 2, reference numerals 34a and 34b denote sensor cords, and 34
c is a connector.

FIG. 4 and FIG. 5 show different embodiments of the vehicle side impact airbag device according to the present invention, and the portions corresponding to the above-mentioned embodiments are designated by the same reference numerals. Although the detailed description is omitted here, the gas generator 32A of the airbag module 31A of the airbag device 31 has a seat frame 23 as shown in FIG.
The air bag main body 35, which is disposed so as to extend laterally along the upper frame of the vehicle, and in which a head protection portion 35a and a chest protection portion 35b are formed in series, has individual gas inlets 38a, 3a.
8b.

Gas injection port 38 on the side of the head protecting portion 35a
A recess 35c formed by notching the airbag body 35 in a substantially U shape is formed between a and the gas inlet 38b on the chest protection portion 35b side. A sewn portion 37 that partially divides the airbag body 35 into a head protection portion 35a and a chest protection portion 35b is formed along the bulging direction of the airbag body 35 from the bottom of the recess 35c.

It is obvious that the modified example of the sewn portion 37 shown in FIGS. 3 (a), 3 (b) and 3 (c) can be applied to the airbag body 35 in this embodiment. Ah

[0024]

The above is the configuration of the embodiment of the vehicle side impact airbag device according to the present invention. According to the vehicle side impact airbag device of the first aspect of the present invention, The airbag body has a head protection portion and a chest protection portion formed in series, and since the head protection portion and the chest protection portion are separated by the sewing portion formed in the airbag body,
There is no risk that only the head protection part will damage the side window glass and go outside, and the gas from the gas generator will be quickly supplied to the head protection part and the chest protection part, allowing rapid deployment of the airbag body. ,
Swelling can be obtained, and sufficient restraint force for the occupant can be obtained.

According to a second aspect of the present invention, there is provided a vehicle side impact airbag device including a pair of upper and lower airbag modules provided at upper and lower positions of a side portion of a seat back.
The airbag body has a head protection portion and a chest protection portion formed in series, the head protection portion and the chest protection portion are separated by the sewing portion formed in the airbag body, the seat back of Since the airbag body is attached to the pair of upper and lower airbag modules provided on the side portions, it is possible to stably support the airbag body, and only the head protection portion damages the side window glass. The gas from the gas generators of the pair of upper and lower airbag modules is quickly supplied to the head protection part and the chest protection part without the risk of going out to the outside, and rapid expansion and swelling of the airbag body can be obtained. It is possible to obtain a sufficient occupant restraint force.

According to the vehicle side impact airbag device of the third aspect of the present invention, a pair of upper and lower airbag modules are provided at upper and lower positions of the side portion of the seat back.
The airbag body has a head protection portion and a chest protection portion formed in series, the head protection portion and the chest protection portion is partly divided by the sewing portion formed in the airbag body,
Since the sewn portion that partially divides the head protection portion and the chest protection portion of the airbag body is formed in a portion of the airbag body, the airbag body can be stably supported, and the head. There is no danger that only the part protection part will damage the side window glass and go out to the outside, and a sewing part that partly divides the head protection part and the chest protection part is formed in part of the airbag body. As a result, the sewing work can be performed quickly, and the head protector and the chest protector can be quickly supplied with gas from the gas generators of the pair of upper and lower airbag modules, which allows rapid expansion and swelling of the airbag body. Therefore, sufficient restraint force for the occupant can be obtained.

According to the present invention, since the head protecting portion and the chest protecting portion of the airbag body are integrally formed, the head protecting portion of the airbag body may damage the side window glass and go out to the outside. Without this, the airbag body can be supported stably, the deployment time of the airbag body can be shortened, the airbag body can be rapidly deployed and swollen, and sufficient occupant restraint force can be obtained. Thus, it is possible to obtain a vehicle side impact airbag device having excellent safety.

[Brief description of drawings]

FIG. 1 is a side view showing a state in which a vehicle side impact airbag device according to the present invention is applied to a vehicle seat.

FIG. 2 is a front explanatory view showing a state in which the vehicle side collision airbag device according to the present invention is applied to a vehicle seat.

3A and 3B respectively show an airbag body of a vehicle side impact airbag device according to the present invention.
(C) is a side view of the airbag body.

FIG. 4 is a side view showing another embodiment in which the vehicle side impact airbag device according to the present invention is applied to a vehicle seat.

FIG. 5 is a front explanatory view showing another embodiment in which the vehicle side collision airbag device according to the present invention is applied to a vehicle seat.

FIG. 6 is a side view showing a conventional side airbag device for a vehicle.

[Explanation of symbols]

 2 Seated person 2a Head side surface 2b Chest side surface 11 Vehicle seat 12 Seat cushion 13 Seat back 23 Seat frame 31 Air bag device 31A Air bag module 31B Air bag module 32A Gas generator 32B Gas generator 33 Gas outlet 35 Air bag Main body 35a Head protection part 35b Chest protection part 35c Recess 37 Sewing part 37a Communication part 38 Gas inlet 38a Gas inlet 38b Gas inlet

Claims (3)

[Claims] 1. A vehicle including a gas generator provided on a side portion of a seat, and an airbag body fixed so that a gas ejected from the gas generator when the gas generator is activated is introduced. In the airbag apparatus for side impact, the airbag body has a head protection portion and a chest protection portion formed in series, and the head protection portion and the chest protection portion are sewn on the airbag body. An airbag apparatus for a side collision of a vehicle, characterized by being divided by parts. 2. A vehicle including a gas generator provided on a side portion of a seat, and an airbag main body which is fixed so that gas ejected from the gas generator when the gas generator is activated is introduced. In the side-impact airbag device, the side-impact airbag device includes a pair of upper and lower airbag modules provided at upper and lower positions of a side portion of a seat back, and the airbag body is a head formed in series. A head protection part and a chest protection part, the head protection part and the chest protection part being separated by a sewing part formed in the airbag body, and a pair of upper and lower airbags provided on the side parts of the seat back. An airbag apparatus for a side collision of a vehicle, wherein the airbag body is attached to a module. 3. A vehicle including a gas generator provided on a side portion of a seat, and an airbag main body fixed so that gas ejected from the gas generator when the gas generator is activated is introduced. In the side-impact airbag device, the side-impact airbag device includes a pair of upper and lower airbag modules provided at upper and lower positions of a side portion of a seat back, and the airbag body is a head formed in series. An airbag for side collision of a vehicle, characterized in that it has a part protection part and a chest protection part, and the head protection part and the chest protection part are partly divided by a sewing part formed in the airbag body. apparatus.