Patent ID: 7264267

Claim:
A head-protecting airbag device for a vehicle comprising an airbag folded and housed in the upper edge of windows inside a vehicle, and deployable downward along the windows when fed with inflation gas, wherein: the airbag includes: a gas admissive portion, which is inflatable with inflation gas by separating an inner wall and an outer wall of the airbag; and a non-admissive portion, which is formed by joining the inner wall and outer wall and admits no inflation gas; the gas admissive portion includes: a gas feed passage extending along the upper edge of the airbag as flatly expanded for feeding inflation gas along front-rear direction; and a plurality of vertical chambers juxtaposed along the front-rear direction of the vehicle, each of the vertical chambers being provided at upper end thereof with a communication port for communicating with the gas feed passage; and a gas flow regulating means is located in at least one of the vertical chambers, the regulating means being constituted by part of the airbag itself, whereby, when inflation gas flows into the vertical chamber via the communication port, the inflation gas is directed obliquely down and toward the vehicle's exterior, wherein: substantial length of the inner wall and substantial length of the inner wall are differentiated from each other in the gas feed passage in the periphery of the communication port of the at least one vertical chamber; and the difference lengths of the outer and inner walls constitutes the gas flow regulating means.