Patent ID: 7625007

Claim:
An airbag device for a vehicle, comprising: a gas supply portion that injects gas when a vehicle collision occurs; an airbag body, with a bag shape and a single-chamber structure, which is inflated and deployed toward an occupant to restrain at least both shoulders of the occupant, when the airbag body receives the gas from the gas supply portion; and a low-pressure portion provided in a protection area in an end portion of the airbag body, which faces the occupant, wherein the low-pressure portion is provided in the airbag body at a substantially middle position in a bag width direction, and the low-pressure portion extends in a bag height direction; the low-pressure portion is formed by sewing foundation fabric to the airbag body; and the low-pressure portion is inflated such that pressure in the low-pressure portion is lower than pressure in the airbag body, when the airbag body is inflated and deployed, wherein a gas inlet is formed in the low-pressure portion so that the low-pressure portion receives the gas from the airbag body after the airbag body is inflated and deployed, and the gas inlet is formed by forming a non-fixed portion where a part of a peripheral portion of the foundation fabric is separated from the airbag body, and forming a fixed portion where a rest of the peripheral portion of the foundation fabric is fixed to the airbag body; and wherein the low-pressure portion is narrower than the airbag body in a bag width direction.