JPH02303951A - Crew restricting air bag for vehicle - Google Patents

Abstract

PURPOSE:To prevent a crew from colliding against a door on a car body side part, when a vehicle is in collision, by connecting a subbag part, which is swollen to a side of the crew at the time of swelling a bag main unit, successively in line to the bag main unit which is swollen by a pressure of gas to impede front movement of the crew. CONSTITUTION:An air bag system 2 is constituted of an air bag 3 mounted to a base plate 1 and an inflator 4 which is similarly mounted to the base plate 1 to supply gas to the air bag 3. Here the air bag 3 is formed of a bag main unit 3a, which is swollen by a pressure of gas from the inflator 4 to impede a crew 5 from moving to the front, and a subbag part 3b which is provided successively in line with a rear end side part of the bag main unit 3a to swell to a side of the crew 5 at the time of swelling the bag main unit 3a. At the time of front part collision of a vehicle, the subbag 3b, is swollen between the crew 5 and a door 6 in a car body side part, thus the crew 5 is prevented from colliding against the door 6.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a vehicle occupant restraint airbag that is inflated by gas pressure to prevent the vehicle occupant from moving forward, for example, in the event of a frontal collision of a vehicle. It is something.

(Prior art) Generally, when a frontal collision occurs in a car, the occupant's upper body is rotated forward around the waist due to inertia, and the occupant's head collides with the steering wheel, instrument panel, etc. , can be dangerous.

Conventionally, in order to avoid such a dangerous situation in the event of a collision, an airbag for restraining occupants and an inflator that supplies gas to the airbag are mounted on the steering wheel, instrument panel, etc., and systems that detect vehicle collisions have been installed. A system has been considered in which a sensor is provided to operate the inflator using an output signal from the sensor. The airbag used in this system is
For example, as disclosed in Japanese Utility Model Publication No. 56-12139, when the bulge is expanded, it becomes larger toward the rear.

Therefore, if a vehicle equipped with such a system is involved in a frontal collision, the system will respond to the collision signal from the sensor and
The inflator is activated and gas is supplied to the airbag from the inflator at high speed. This causes the airbag to rapidly inflate and prevent the occupant from moving forward.

(Problem to be Solved by the Invention) By the way, when such a frontal collision of a vehicle occurs, depending on the location of the collision, it is conceivable that the side portion of the vehicle body may face in the direction of travel. In this case, there is a risk that the occupant's body will collide with the side of the vehicle body such as the door (vehicle side), but the above-mentioned airbag has the problem that such a collision with the side of the vehicle cannot be avoided. Ta.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a vehicle occupant restraint airbag that can reliably prevent an occupant from colliding with the side of a vehicle even in such a case.

(Means for Solving the Problem) Based on this object, the present invention includes a bag body that is inflated by gas pressure to prevent a vehicle occupant from moving forward, and a bag body that is connected to the bag body and that is connected to the bag body. The present invention is characterized in that the vehicle occupant restraining airbag includes a sub-bag portion that bulges out to the side of the occupant when the main body bulges out.

(Function) When a vehicle occupant restraint airbag having such a configuration is applied to a car, for example, if the car has a frontal collision, the airbag is rapidly inflated toward the passenger, and the bag body is Prevent the occupant from moving forward. At this time, the sub-bag bulges out between the occupant and the side of the vehicle body, and restrains the occupant's body from moving toward the side of the vehicle body.

(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a perspective view of a vehicle occupant restraint airbag system according to the present invention, and FIG. 2 is a sectional view taken along line II--II in FIG. 1.

In FIG. 2, 1 is a base plate attached to, for example, an instrument panel or a steering wheel of an automobile, and 2 is a vehicle occupant restraint airbag system according to the present invention. This vehicle occupant restraint airbag system 2 includes an airbag 3 attached to a base plate 1 and an inflator 4 fixed to the base plate 1 and supplying gas to the airbag 3.

The airbag 3 has a bag body 3a that is inflated by gas pressure from an inflator 4 to prevent the vehicle occupant from moving forward.
and a sub-bag portion 3b which is connected to the rear end side of the bag body 3a and expands to the side of the occupant when the bag body 3a expands.

Next, the operation of such a configuration will be explained.

When a vehicle occupant restraint airbag with such a configuration is applied to a vehicle, when the vehicle has a frontal collision, the airbag 3 is used to prevent the passenger from riding due to the gas generated from the inflator 4.
By being rapidly inflated to the side, the bag body 38 prevents the occupant 5 from moving forward.

At this time, the sub-bag 3b bulges out between the occupant 5 and the door 6 on the side of the vehicle body as shown in FIG. 3, and restrains the body of the occupant 5 from moving to the side of the vehicle body as shown in FIG. To prevent an occupant 5 from colliding with a door 6.

<Effects of Fe Brightness> As explained above, the present invention includes a bag body that expands with gas pressure to prevent the vehicle occupant from moving forward, and a bag body that is connected to the bag body and that expands the bag body. Since the vehicle occupant restraint airbag is equipped with a sub-bag portion that bulges out to the side of the occupant when the occupant is closed, even if the occupant is suddenly moved forward with respect to the vehicle, the occupant's head, etc. will be protected against the side of the vehicle. Collisions can be reliably prevented.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a vehicle occupant restraint airbag system according to the present invention. FIG. 2 is a sectional view taken along the line TI-II in FIG. 1. 3 and 4 are explanatory views of the operation of the vehicle occupant restraint airbag system shown in FIGS. 1 and 2. FIG. 3...Airbag 3a...Bag body 3b...Subbag 5...Occupant 6...Door (body side) Fig. 1 3...Airbag 3a...1 bag Figure 3 Figure 4

Claims (1)

[Claims] (1) A bag body that expands with gas pressure to prevent the vehicle occupant from moving forward, and a sub-bag portion that is connected to the bag body and expands to the side of the occupant when the bag body expands. A vehicle occupant restraint airbag characterized by comprising: