Airbag system

Abstract

To provide an airbag device capable of improving deployment performance of an airbag which is inflated and deployed from a seat rear side of an upper part of a vehicle seat toward a seat front side.SOLUTION: An airbag device 10 comprises: an inflator 44 for generating gas upon collision of a vehicle; and an airbag 32 to which the gas is supplied, and which is inflated and deployed from a seat rear side of an upper part of a vehicle seat 12 toward a seat front side, and passes through between a ceiling 24 of a cabin R and a head H of an occupant D seated in the vehicle seat 12. The airbag 32 comprises at least one gas supply passage 60 which is provided toward the seat front side, and in which an angle of incidence θ1 with respect to the ceiling 24 of the cabin R is set to an acute angle in a side view seen from a seat width direction.SELECTED DRAWING: Figure 2

Claims

1. An inflator that generates gas in the event of a vehicle collision, The aforementioned gas is supplied to a pair of front-to-rear extending sections that expand and unfold toward the front of the seat, passing through both sides of the head of an occupant seated in a vehicle seat, and a front connecting section that connects the front ends of the pair of front-to-rear extending sections in the width direction of the seat, The airbag body, which is connected to the rear side of the seat of the aforementioned front connecting section and inflates and deploys toward the occupant, It has an airbag, and The airbag is provided facing forward of the seat and has at least one gas supply passage whose angle of incidence to the ceiling of the vehicle compartment is set to an acute angle when viewed from the seat width direction. The gas supply passage includes a first gas supply passage and a second gas supply passage provided at the rear ends of the pair of front and rear extending portions. The first gas supply passage and the second gas supply passage are inclined outward in the width direction of the sheet so as to have a predetermined inclination angle with respect to the front-rear direction of the sheet in a plan view. Airbag system.

2. The aforementioned angle of incidence is set to 15° to 35°. The airbag device according to claim 1.

3. The airbag body is The front connecting portion expands and unfolds toward the occupant at the rear side of the seat, lagging behind the front and rear chambers, and when the occupant is restrained, the front and rear chambers are compressed in the front-rear direction of the seat while being extended in the front-rear direction of the seat. The airbag device according to claim 1 or claim 2.

4. The aforementioned tilt angle is set to 10° to 45°. The airbag device according to claim 1 or claim 2.

5. The aforementioned front and rear chambers are In the state before the gas is supplied, the airbag body is housed on the rear side of the seat and further has a rear connecting portion that connects the rear ends of the pair of front and rear extending portions in the seat width direction. The airbag device according to claim 3.

6. The aforementioned gas supply line is Including a third gas supply passage connected to the rear side surface of the rear connecting portion, The airbag device according to claim 5.

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