Patent ID: 8770620

Claim:
An airbag apparatus comprising an airbag, wherein the airbag includes: an upstream inflation portion and a downstream inflation portion, which are defined inside the airbag, the upstream inflation portion being located upstream of the downstream inflation portion, wherein the upstream inflation portion is inflated by a supply of inflation gas, and the downstream inflation portion is inflated by an inflow of the inflation gas from the upstream inflation portion; and a gas inlet portion that causes the inflation gas to flow from the upstream inflation portion to the downstream inflation portion upon the inflation of the airbag, wherein, when the airbag restrains an occupant, the gas inlet portion increases a flow rate of the inflation gas from the upstream inflation portion to the downstream inflation portion in accordance with an external force applied to the airbag accompanying the restraint of the occupant compared to a flow rate of the inflation gas before the restraint of the occupant by the airbag, and the gas inlet portion is provided at a portion other than a portion where the external force becomes largest in the airbag.