JP2000079863A - Air bag device for rear seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air bag device for a rear seat installed in a car interior which can prevent or reduce the damage received by a rear seat, occupant in a front surface collision time or a side surface collision time, while reducing the change of a conventional device as little as possible. SOLUTION: Almost the same place at the side surface part of the front pillar of an automobile, an air bag for rear seat used concurrently as an air bag for front seat is installed. This air bag 8 covers almost the whole body of a front door and a rear door, and it is expanded to protect the head, the shoulder, and the trunk of the front and rear seat occupants in a side surface collision time, while to protect the head and the chest of the rear sheat occupant. And the installing position of a shoulder belt (the anchorage position) and the form of the air bag body are set not contacting the shoulder belt of the front seat occupant and the bag, when the air bag is expanded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear-seat airbag device provided in a vehicle, and more particularly, to a vehicle for preventing or reducing injuries to a rear-seat occupant in a frontal collision or a side collision of the vehicle. The present invention relates to an airbag device for a rear seat provided with an airbag installed in a room.

[0002]

2. Description of the Related Art A rear seat airbag device for preventing or reducing injuries to a rear occupant in a frontal collision or a side collision of an automobile includes, for example, a rear side of a seat back of a front seat and a front portion of a rear tire house. Attached to.

For example, as shown in FIG. 4, a rear airbag device 21 that can protect a occupant of a rear seat in the event of an impact from the front is provided on the back side of a seat back 23 of a front seat 22. Further, as shown in FIG. 5, for example, a rear seat airbag device 24 that can protect a occupant of the rear seat in the event of a side impact is installed at the front of the rear tire house. Regardless of whether the rear airbag is set at the back of the seat back, at the front of the rear tire house, or the like, the driver airbag 25, the passenger airbag 26 shown in FIG. The front airbag such as the side airbag 27 is set in a different place.

[0004]

SUMMARY OF THE INVENTION A rear airbag is
Since it is usually set in a different place from the front airbag,
The number of parts such as the airbag module increases, which leads to an increase in cost. In addition, it is necessary to set airbag devices having different specifications at different places depending on the type of collision, for frontal collision and side collision, which further increases the cost. In addition, there are many cases where it is unnecessary to attach an airbag device to the rear seats for the rear seats because the frequency of occupants is low and costs are increased.

[0005] Therefore, the present invention provides a rear-seat air installed in a room which can prevent or reduce injuries to a rear-seat occupant in a frontal collision or a side collision by minimizing the modification of the conventional device. It is an object to provide a bag device.

[0006]

In order to achieve the above object,
The present invention relates to a rear airbag installed in the interior of a vehicle for protecting a rear occupant when the vehicle receives an impact from the front or side. And also serves as a side airbag to protect the occupant in the front seat when a shock is received from the vehicle. According to this configuration, since the airbag for the rear seat occupant is also used as the side airbag for the front seat occupant, it is easy to set the airbag for the rear seat and share parts with the side airbag for the front seat. As a result, a rear passenger airbag can be provided at a low cost.

[0007] Further, the rear seat airbag is inflatable toward a gap between an occupant in a rear seat close to the airbag and a door adjacent to the occupant. According to this configuration, the airbag can be inflated toward the gap between the rear occupant and the door, so that a side protection effect for the rear occupant at the time of a side collision can be established.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a side view of a front pillar according to the present invention and a mounting portion thereof. The airbag device according to the present embodiment is applied to an occupant of a vehicle 10 in which one person (driver) and two people ride in the rear part in the front center of the vehicle compartment as shown in a plan view and a side view in FIG. This is a rear airbag that also functions as a front seat side airbag and is provided inside a side portion of a front pillar of an automobile.

In FIG. 1, reference numeral 1 denotes a front pillar, which is an interior part of an automobile, and reference numeral 2 denotes an airbag bag provided inside the front pillar. In the airbag device of the present embodiment, the inflator 3 is provided in the instrument panel, and the inflator 3 operates when an acceleration sensor (not shown) detects an acceleration equal to or higher than a predetermined value. I have. Further, the inflator 3 is configured such that the generated gas flows into the airbag bag body 2 provided inside the front pillar 1 via the gas guide pipe 4. As shown in FIG. 2, the airbag 2 according to the first embodiment is inflated toward a rear occupant.

The air bag 2 shown in FIG. 1 covers substantially the front halves of the front door and the rear door as shown in FIG. 2, and protects the head, shoulders, and trunk of the occupant in the event of a side collision. It protects the head and chest of the rear occupant in a frontal collision. The shoulder belt attachment portion is attached to the roof via a reinforcing member so that the shoulder bag of the front passenger does not contact the airbag when the airbag is inflated.
The airbag 2 has a front pillar mounting portion 6 and a fixing member 7 such as a bolt or the like attached to a vehicle interior side 6A of the front pillar 1.
It is fixed at.

Next, the operation will be described. When a front or side impact is received, the airbag inflates from the front pillar toward the rear occupant. The inflated airbag contacts the rear occupant and can reliably prevent the rear occupant from moving forward. Further, when the rear occupant presses the airbag after coming into contact with the airbag, the air is rapidly discharged from the vent hole (air discharge hole) of the airbag, and the impact applied to the rear occupant is reduced. When the airbag inflates from the front pillar toward the front seat between the occupant and the front door and restrains the lateral movement of the front occupant, the front seat occupant presses the airbag. The air is suddenly discharged from the vent hole, and the impact on the occupant in the front seat is reduced.

In the first embodiment of the present invention, the airbag is set to the front pillar. However, when the airbag is set to the front pillar, the rear seat which does not contact the occupant until the airbag is completely inflated. In addition to ensuring a sufficient distance to the occupant, the airbag can be inflated to cover the front of the rear occupant, so that the occupant can be protected more effectively than in other places, such as the center pillar. There are great benefits. In the first embodiment of the present invention, the airbag is applied to a vehicle in which one driver is in the center of the front seat and two or more are in the rear seat. Since the distance between the occupant of the seat and the side door is large, the airbag can be inflated in that space, and there is no need to restrict the seat reclining position, for example, unlike the airbag for the rear seat set on the back of the seatback There is a merit that a large capacity airbag can be set on the top and the protection effect for the rear seat occupant can be increased.

Next, a second embodiment of the present invention will be described with reference to FIG.

In the first embodiment of the present invention, as shown in FIG. 2, the airbag 2 is set so as to cover substantially the front half of the front door and the rear door. 2 is further expanded to cover the entire rear door as shown in 8 of FIG. 2, so that the head, shoulders, and torso of the rear occupant in a side collision in addition to the first embodiment are added. Is designed to protect.

Next, the operation of the second embodiment will be described.

At the time of a side collision, the airbag inflates from the front pillar toward the gap between the occupant in the rear seat near the front pillar and the door adjacent to the occupant.

In the second embodiment, the airbag inflates from the front pillar toward the rear occupant in the event of a frontal impact similarly to the first embodiment, and the effect of reducing the impact applied to the occupant is the same. is there. The difference from the first embodiment is that in the second embodiment, when a side impact is applied, the airbag can be inflated from the front pillar toward the gap between the rear occupant and the door adjacent to the occupant. Therefore, after the inflated airbag restrains the lateral movement of the rear seat occupant, when the rear seat occupant presses the airbag, the air is rapidly discharged from the airbag vent hole and the rear seat occupant is instructed. The effect of reducing the applied shock is added.

As described in the first and second embodiments, according to the present invention, the side airbag for the front seat can be used also as the airbag for the occupant in the rear seat, so that a low-cost airbag can be provided.

The present invention is not limited to the embodiment described above, but can be variously modified without departing from the gist of the present invention. Needless to say, any airbag device that inflates toward the airbag and that shares the side airbag for the front seat may be used. More specifically, the airbag is not limited to the one provided with the front pillar,
As shown in FIG. 12, the airbag may be provided inside the center pillar, or may be provided on the side of the seat back of the front seat and be inflatable to the side of the vehicle. In addition, front seat 1
The embodiment of the present invention can be applied not only to passengers but also to passengers in two front seats by forming an airbag bag having a shape such that the front end is divided into two so as to inflate while avoiding the shoulder belt in the front seat. Applicable.

[0021]

According to the first aspect of the present invention, the rear airbag for the rear passenger can be used also as the side airbag for the front passenger, and as a result, the airbag for the rear passenger can be manufactured at low cost. Can be provided.

According to a second aspect of the present invention,
Since the side airbag for the front seat occupant can be inflated toward the gap between the rear seat occupant and the door, a side protection effect for the rear seat occupant at the time of a side collision can be established.

[0023]

[Brief description of the drawings]

FIG. 1 is a side view showing an airbag device according to one embodiment of the present invention.

FIG. 2 shows a front seat (driver's seat center 1) according to an embodiment of the present invention.
FIG. 2 is a plan view and a side view showing a rear seat airbag that also serves as a side passenger airbag.

FIG. 3 shows a front seat (driver's seat center) according to another embodiment of the present invention.
1 is a plan view and a side view showing an airbag for a rear seat that also serves as a side airbag.

FIG. 4 is a perspective view of a rear seat airbag mounted on a back surface of a seat back according to a conventional embodiment, as viewed from the rear.

FIG. 5 is a partial view of a rear seat airbag provided in a rear tire house according to a conventional embodiment.

FIG. 6 is a plan view and a side view showing a driver airbag, a passenger airbag, and a front seat side airbag according to a conventional embodiment.

[Explanation of symbols]

 10 vehicle 1 front pillar 2 airbag 8 airbag

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3D054 AA02 AA03 AA04 AA06 AA07 AA14 AA16 AA18 AA22 CC08 CC15 EE14 EE19 EE20 FF15

Claims (2)

[Claims] 1. An airbag for a rear seat provided in the interior of a vehicle to protect an occupant in a rear seat when the vehicle receives an impact from the front or side. An airbag device for a rear seat of an automobile, which is also used as a side airbag for protecting an occupant in a front seat when an impact is received from a user. 2. The rear airbag according to claim 1, wherein the rear airbag is inflatable toward a gap between an occupant in a rear seat near the airbag and a door adjacent to the occupant. Airbag device for the rear seats of automobiles.