JPH09136598A - Chest and head integrating type air bag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the storability of an air bag body by making the air bag body uniform in thickness when it is stored. SOLUTION: The head protecting part 22A of an air bag body 22 is folded downward into the bag body from an expansion position shown by the imaginary line and is set to the position shown by the dotted line. The lower corner (point P1) of the chest protecting part 22B of the air bag body 22 is folded into the bag body toward a diagonal L1 from the expansion position shown by the imaginary line and is set to the position shown by the dotted line. Next, two points P2, P3 crossing the diagonal L1 of an opening 23 in the chest protecting part 22B are opened horizontally, the head protecting part 22A is folded in between them, and a point P4 at the upper end of the opening 23 is set on a point P5 at the lower end of the opening 23. Then, from a front end to a rear end 22C along the direction of expansion the head protecting part is folded and stored like bellows on plan view.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag device integrated with a thoracic head, and more particularly, to an integrated thoracic head airbag provided with an airbag bag which is deployed from the rear side of an occupant toward the front of the vehicle. Related to the device.

[0002]

2. Description of the Related Art Conventionally, a collision from the side of an automobile,
A chest-head-integrated airbag device is known, which deploys an airbag bag along a side portion of an occupant against a so-called side impact, and protects the occupant's chest and head at the same time. It is shown in Kaihei 5-162598.

As shown in FIG. 5, in the chest head-integrated air bag device, a side portion 70 of the side portion 70 inside the vehicle interior.
When the airbag device 72 is attached to A, and the inflator 74 is operated, the airbag bag 74 having a substantially I shape in a side view is deployed as shown by the solid line in FIG. Upper part 74B while protecting the occupant's chest
Protects the occupant's head. In this device, the airbag body 74 is folded and housed in a serpentine shape in a front view as shown by an imaginary line in FIG.

Further, as another chest head integrated air bag device, the device is provided on a side portion of a seat back, and an airbag bag body whose developed shape is substantially L-shaped in a side view is provided from a rear side portion of an occupant. A device for deployment can be considered.

[0005]

However, in the chest head-integrated airbag device for deploying the substantially L-shaped airbag bag from the rear side of the occupant, the shape of the airbag bag is substantially L-shaped. Therefore, if the airbag bag is folded in a zigzag or roll shape from the front end side in the deployment direction toward the rear end side in the deployment direction, the thickness along the vertical direction during storage becomes uneven, and The sex is not good.

In consideration of the above facts, an object of the present invention is to obtain a chest head-integrated air bag device having a uniform thickness when the air bag body is stored and improving the storability of the air bag body. is there.

[0007]

The present invention according to claim 1 is an airbag apparatus integrated with a chest head that protects an occupant against a side collision, and is deployed from the rear of the side of the occupant toward the front of the vehicle. A side view L-shaped airbag bag body is provided, and the head protection portion at the upper part of the L-shaped longitudinal direction of the airbag bag body is folded downward into the bag body, and
The lower corner portion of the chest protection portion at the lower portion of the L-shaped longitudinal direction of the airbag bag is folded diagonally inside the bag body, and then the folded chest protection portion is opened left and right. It is characterized in that the folded head protection portion is folded therein and then folded in a serpentine shape or a roll shape in a plan view.

Therefore, by folding the air bag body in this manner, the thickness of the air bag body during storage becomes uniform.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of an airbag device integrated with a thoracic head according to the present invention will be described with reference to FIGS.

In the figure, an arrow FR indicates a vehicle front direction, an arrow UP indicates a vehicle upward direction, and an arrow IN indicates a vehicle width inner direction.

As shown in FIG. 2, the chest head-integrated airbag apparatus 10 of this embodiment is attached to the vehicle width direction outer side portion 20A of the seat back 20. The airbag bag 22 of the airbag device 10 has a substantially L-shaped deployment shape in a side view, and is deployed from the rear of the side of the occupant 24 toward the front of the vehicle (direction of arrow A in FIG. 2). Then, after that, the vehicle is deployed substantially upward (in the direction of arrow B in FIG. 2).

As shown in FIG. 3, the air bag body 22.
Has an L-shaped upper portion in the vertical direction that serves as a head protection portion 22A.
It is designed to spread between A and the door glass 26. The L-shaped lower portion of the airbag bag 22 in the vertical direction is a chest protection portion 22B, and the chest protection portion 22B is deployed between the chest 24B of the occupant 24 and the side door 28. It has become.

Reference numeral 30 in FIGS. 2 and 3 indicates a seat belt. Next, a procedure for folding the airbag bag 22 of the present embodiment will be described.

As shown in FIG. 1A, when the airbag bag body 22 is folded, first, the airbag bag body 22 is folded.
Head protection portion 22A in the upper part of the L-shaped vertical direction
Is folded inward from the deployed position indicated by the imaginary line to the position indicated by the broken line. In addition, the airbag body 2
Chest protection portion 22B in the L-shaped vertical lower portion of 2
The lower corner portion (point P1) is folded into the bag body from the expanded position indicated by the imaginary line toward the diagonal line L1 to the position indicated by the broken line.

Next, two points P2 and P3 intersecting the diagonal line L1 of the opening 23 of the folded chest protection portion 22B are opened in the left-right direction (direction of arrow A and direction of arrow B), and the head previously folded therein. The part protection portion 22A is folded in, and the point P4 at the upper end of the opening 23 is overlapped with the point P5 at the lower end of the opening 23 to obtain the state shown in FIG.

Next, the airbag bag 22 is folded in a serpentine shape in plan view from the tip end portion (points P1 and P2 in FIG. 1C) in the deployment direction toward the rear end portion 22C in the deployment direction.
The stored state shown in (C) is obtained.

Therefore, in the chest head-integrated airbag apparatus 10 of this embodiment, the airbag bag 22 is extended from the front end portion (points P1 and P2 in FIG. 1C) toward the rear end portion in the deployment direction. Even when folded in a serpentine shape toward 22C, the thickness (in the direction of arrow T in FIG. 1B) during storage (FIG. 1B).
The arrow W in (C) becomes uniform, and the storability of the airbag bag 22 is improved.

Further, in the chest head-integrated air bag device 10 of the present embodiment, the head protection portion 22A is folded inside the bag body from the deployed position, and the chest protection portion 22B is diagonally drawn from the deployed position. In order to fold the head protection portion 22A that has been previously folded into the folded chest protection portion 22B into the bag body in the direction, the chest protection portion 22B must be gas-fed before the head protection portion 22A. Since a deployment force by pressure is applied, the chest protection unit 22B is quickly deployed before the head protection unit 22A.

In the above, the present invention has been described in detail with respect to a specific embodiment. However, the present invention is not limited to such an embodiment, and various other embodiments are included within the scope of the present invention. It is clear to a person skilled in the art that is possible. For example, in the present embodiment, the airbag bag 22 is moved from the tip end portion (points P1 and P2 in FIG. 1C) in the deployment direction to
Folded in a serpentine shape toward the rear end 22C in the unfolding direction,
Instead of this, as shown in FIG.
2 may be folded in a roll shape from the front end portion (points P1 and P2 in FIG. 4) in the expansion direction toward the rear end portion 22C in the expansion direction. Further, in the present embodiment, the chest head integrated airbag device 10 is provided in the vehicle width direction outer side portion 20A of the seat back 20.
However, instead of this, the chest head integrated air bag device 10 may be provided below the B pillar.

[0020]

According to the first aspect of the present invention, in a thorax head-integrated airbag device for protecting an occupant against a side collision, a side view L deployed from the side rear of the occupant toward the front of the vehicle. A bag-shaped airbag bag body is provided, and the head protection part at the upper part of the L-shaped longitudinal direction of the airbag bag body is folded downward into the bag body, and the airbag bag body is also provided. Fold the lower corner of the chest protection part at the lower part of the L-shaped longitudinal direction into the bag body in a diagonal direction,
Next, open the folded chest protection part to the left and right, fold the folded head protection part into this, and then fold it into a serpentine or roll shape in plan view, so the thickness when the airbag bag is stored Has an excellent effect that the air bag bag can be stored more uniformly. Further, it has an excellent effect that the chest protection portion is rapidly deployed before the head protection portion.

[Brief description of the drawings]

FIG. 1A is a schematic perspective view showing a folded state of an airbag bag body of a chest head-integrated airbag device according to an embodiment of the present invention, and FIG. It is a schematic perspective view which shows the folding state of a bag bag body, (C)
FIG. 7B is a schematic plan view showing the folded state of the airbag bag following FIG.

FIG. 2 is a side view showing an expanded state of the airbag body of the airbag device integrated with the thoracic head according to one embodiment of the present invention.

FIG. 3 is a schematic front view showing an expanded state of the airbag body of the airbag device integrated with the thoracic head according to one embodiment of the present invention.

FIG. 4 is a schematic plan view corresponding to FIG. 1 (C) showing a folded state of an airbag bag body of a chest head-integrated airbag device according to another embodiment of the present invention.

FIG. 5 is a schematic cross-sectional view seen from the front of the vehicle showing an airbag bag deployed state of the chest head-integrated airbag device according to the conventional embodiment.

[Explanation of symbols]

 10 Chest head integrated air bag device 20 Seat back 22 Air bag body 22A Head protection part 22B Chest protection part 22C Deployment direction rear end 24 Occupant 24A Head 24B Chest

Claims (1)

[Claims] 1. A chest head-integrated airbag device for protecting an occupant against a side collision, comprising an L-shaped airbag bag in a side view, which is deployed from the rear of the side of the occupant toward the front of the vehicle. A head protection portion at an upper portion of the L-shaped longitudinal direction of the airbag bag is folded downward into the inside of the airbag body, and the L-shaped longitudinal direction of the airbag bag body Fold the lower corner of the chest protection part in the lower part inside the bag body in the diagonal direction, then open the folded chest protection part to the left and right, fold the folded head protection part into it, After that, it is folded into a serpentine shape or a roll shape in a plan view, and an airbag apparatus integrated with the chest head.