JP2848483B2 - Airbag device for side collision of vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side collision airbag device for a vehicle, and more particularly, to a gas generator provided on a side portion of a seat and a gas generator when the gas generator is operated. The present invention relates to an airbag device for a side collision of a vehicle, comprising an airbag body fixed so that gas ejected from the air flows thereinto.

[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 deformed by an impact load and a seated occupant in a side collision of a vehicle, various airbag devices have been used. There has been proposed, for example, a vehicle seat structure as disclosed in Japanese Patent Application Laid-Open No. 4-50052.

[0003] In this vehicle seat structure, an airbag device is provided outside a seatback side portion facing a vehicle body side wall side so as to inflate in a space perpendicular to the vehicle body side wall side or in a space between a seated person and the vehicle. Have been. The airbag body of the airbag device has a relatively large diameter in an inflated state, and is formed so as to largely inflate toward the side of the seated person. In order to obtain the restraining force of the occupant in the event of a side collision of the vehicle, it is effective to support the occupant's waist with the airbag body.

[0004]

However, in such a conventional technique, the airbag device is attached to the center outside the side of the seatback in order to obtain the restraining force of the occupant. The width of the central portion outside the side of the back protrudes greatly on one side, and there is a risk that the appearance will be impaired, and at the time of the occupant getting on and off, the butt of the occupant rubs this part, so that the function of the airbag device When the airbag module is housed inside the seat back, there is a possibility that foreign-body sensation is caused and the sitting comfort is deteriorated.

According to the present invention, the influence of the occupant getting on and off is small, the appearance of the seat back and the feeling of sitting comfort are not likely to be deteriorated. It is an object of the present invention to provide an airbag device for a side collision of a vehicle, which is capable of suppressing the swelling and the impact load received by a seated person and effectively absorbing the inertial force applied to the seated person.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an airbag device for a side collision of a vehicle according to a first aspect of the present invention has a gas supply device provided at a side portion of a seat. An airbag device for a side collision of a vehicle, comprising: a generator; and an airbag body fixed so that gas ejected from the gas generator flows when the gas generator is activated. Is provided at an upper portion of the side portion of the seat back, and the airbag body is formed so as to be curved forward and downward from the upper portion of the side portion of the seat back so as to expand.

According to a second aspect of the present invention, there is provided a side airbag device for a vehicle, comprising: 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. And an airbag body fixed so that air flows into the airbag body, the airbag apparatus is provided on an upper portion of a side portion of a seatback, and the airbag body is provided on a side of a seatback. It is formed so that it curves forward and downward from the upper part of the side part and swells,
The airbag body is folded in a bellows shape or a fan shape from the end to the tip.

[0008]

According to the first aspect of the present invention, the airbag device is provided above the side portion of the seat back, and the airbag body is provided on the side portion of the seat back. Since it is formed so as to be bent forward and downward from the upper part, it is less affected by the getting on and off of the occupant, and there is no possibility that the appearance and the feeling of sitting of the seat back are deteriorated, and the occupant receives the seat back. The impact load can be suppressed, and the inertial force applied to the occupant can be effectively absorbed.

According to a second aspect of the present invention, an airbag device for a side collision of a vehicle is provided on an upper portion of a side portion of a seatback, and the airbag body is provided on a side portion of the seatback. The airbag body is formed so as to bend forward and downward from the upper part and is folded in a bellows shape or a fan shape from the end side to the front end side of the airbag main body, so that it is affected by passengers getting on and off. The airbag body is folded in a bellows-like or fan-like shape from the end to the front end of the airbag body when the airbag body is inflated. The portion curves forward and downward and bulges, thereby suppressing the impact load received by the occupant and effectively absorbing the inertial force applied to the occupant.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an airbag device for a vehicle according to the present invention; 1 to 4 show one embodiment of a side collision airbag device for a vehicle according to the present invention. In this embodiment, the side collision airbag device is a driver's seat of a vehicle seat. The present invention will be described as applied to a seat back such as a passenger seat or a rear seat, but may be applied to a door side of a vehicle.

As shown in FIG. 1, a vehicle seat 10 has a seat cushion 12 mounted on a vehicle body floor via a front-rear sliding mechanism 14 so as to be movable back and forth, and a reclining mechanism 15 at a rear end of the seat cushion 12. And a seat back 13 supported so as to be tiltable back and forth. The headrest 1 is located above the seat back 13.
6 are provided. Reference numeral 17 denotes a seat belt.

Further, as shown in FIG.
A side collision airbag device 31 is attached to an upper portion of the side portion of the seat frame 23. The side collision airbag device 31 includes a cylindrical gas generator (not shown), and the gas generator is fixed to an upper portion of a side portion of the seat frame 23. Further, when the gas generator is activated, the airbag body 35 is connected so as to be curved forward and downward from the upper portion of the side portion and expand.

As shown in FIGS. 3 and 4, the airbag body 35 is formed in a bag shape which is curved by sewing outer peripheral edges of main base cloths 35a and 35b which are curved in a substantially circular arc shape on both right and left sides. . The left and right main base fabrics 35a, 35
b may be sewn via a band-shaped side cloth. The end side 35c, which is the mounting side of the airbag body 35, is formed at a gas inlet.

FIGS. 3 and 4 show a first embodiment of the method of folding the airbag body 35 according to the present invention, in which the front end from the end side 35c where the airbag body 35 is mounted is the bulging side. The airbag body 35 is folded in a bellows shape so as to close the fan around the center of curvature P of the main base cloths 35a and 35b on both right and left sides of the airbag body 35 over the side 35d.

FIG. 5 shows a second embodiment of the method of folding the airbag body 35 according to the present invention.
The airbag body 35 is wound in a fan shape around the center of curvature P of the main base cloths 35a, 35b on both the left and right sides from the front end side 35d, which is the bulging side of 5, to the end side 35c, which is the mounting side. Folded in shape.

The airbag body 35 is formed so as to be curved forward and downward from the upper portion of the side portion so as to bulge out. H. It is provided at a position of about 350 to 450 mm above P.

Further, the tip side 35d of the airbag body 35
Is the hip point H. along the torso line L. It is formed so as to bulge upward from P to a position of about 200 mm. The airbag body 35 can be formed so that the distal end 35d of the airbag body 35 bulges to a position where it comes into contact with the seat cushion. About 200mm above P
It is enough to swell to the position.

According to this configuration, when the airbag body 35 is inflated, the portion folded in a bellows or fan shape from the end side 35c to the tip side 35d of the airbag body 35 is inflated forward and downward. The airbag body 35 of the airbag device 31 can be quickly expanded without being caught on the occupant's arm, the seat belt 17 or the like.

[0019]

The above is the configuration of the embodiment of the vehicle side collision airbag apparatus according to the present invention. According to the vehicle side collision airbag apparatus according to claim 1 of the present invention, Side collision air for a vehicle, comprising: a gas generator provided on a side portion of a seat; and an airbag body fixed so that gas ejected from the gas generator flows when the gas generator is operated. In the bag device, the airbag device is provided at an upper portion of the side portion of the seatback, and the airbag body is formed so as to be curved forward and downward from the upper portion of the side portion of the seatback so as to expand. It is less affected by the occupant getting on and off, there is no risk of deteriorating the appearance and sitting comfort of the seat back, the impact load received by the occupant is suppressed, and the inertial force applied to the occupant is effectively absorbed. Can .

According to the airbag device for a side collision of a vehicle according to the second aspect of the present invention, 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 airbag device for a vehicle, comprising an airbag body fixed such that gas flows thereinto, wherein the airbag device is provided at an upper portion of a side portion of a seat back, and the airbag body is provided with a seat. The airbag body is formed so as to be curved and bulged forward and downward from the upper portion thereof, and is folded in a bellows shape or a fan shape from the end to the tip of the airbag body. Is less affected by the airbag body, and there is no risk of deteriorating the appearance and comfort of the seat back. When the airbag body is inflated, the bellows shape extends from the end to the tip of the airbag body. Others can be swelled by curved front downward folded portion in a fan shape, reducing the impact load seated person is subjected, effectively absorb the inertial force applied to the seat occupant.

According to the present invention, in the event of a side collision of a vehicle,
It is less affected by the occupant getting on and off, and there is no risk of deteriorating the appearance and sitting comfort of the seat back. In the event of a side collision of the vehicle, the airbag body of the airbag device swells and the occupant receives it. It is possible to obtain an airbag device for a side collision of a vehicle capable of suppressing an impact load and effectively absorbing an inertial force applied to a seated person.

[Brief description of the drawings]

FIG. 1 is a perspective view of a state in which an airbag device for a side collision of a vehicle according to the present invention is applied to a vehicle seat.

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

FIG. 3 is a perspective view showing a first embodiment of a method of folding the airbag body of the vehicle side collision airbag apparatus according to the present invention.

FIG. 4 is an explanatory front view of a method of folding the airbag body of the vehicle side collision airbag device according to the present invention.

FIG. 5 is a perspective view showing a second embodiment of the method of folding the airbag body of the vehicle side airbag device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Vehicle seat 12 Seat cushion 13 Seat back 23 Seat frame 31 Airbag device 35 Airbag main body 35a Main base cloth 35b Main base cloth 35c End side 35d Tip side

Claims (2)

(57) [Claims] 1. A vehicle comprising: a gas generator provided on a side portion of a seat; and an airbag body fixed so that gas ejected from the gas generator flows when the gas generator is operated. In the side collision airbag device, the airbag device is provided at an upper portion of a side portion of a seat back, and the airbag body is formed so as to be curved forward and downward from an upper portion of the side portion of the seat back to expand. A side collision airbag device for a vehicle. 2. A vehicle comprising: a gas generator provided on a side portion of a seat; and an airbag body fixed so that gas ejected from the gas generator flows when the gas generator is operated. In the side collision airbag device, the airbag device is provided at an upper portion of a side portion of a seat back, and the airbag body is formed so as to be curved forward and downward from an upper portion of the side portion of the seat back to expand. An airbag device for a side collision of a vehicle, wherein the airbag device is folded in a bellows shape or a fan shape from an end to a tip of the airbag body.