Patent ID: 7080853

Claim:
An airbag for head-protecting airbag device normally folded in an upper edge of windows inside a vehicle including a front pillar sloping down forward, and deployable upon inflow of inflation gas to cover the vehicle's inner side of the windows, the airbag comprising: a gas admissive portion inflatable by admitting inflation gas while separating an inner side wall and an outer side wall respectively thereof; and a non-admissive portion admitting no inflation gas, the gas admissive portion comprising an inflatable shielding portion for covering the vehicles s inner side of the windows upon deployment of the airbag, the inflatable shielding portion comprising a plurality of protection portions juxtaposed along the front-rear direction of the vehicle as the airbag is completely inflated, out of the plurality of protection portions, at least one protection portion located toward a front end of the airbag acting as a front protection portion, and remaining protection portions located rearward thereof acting as at least one rear protection portion, the front protection portion comprising a plurality of vertical chambers juxtaposed along the front-rear direction of the vehicle, each of the vertical chambers being arranged vertically, each of the vertical chambers having a width in the vertical direction set larger than a width in a front-rear direction, and the at least one rear protection portion comprising a plurality of horizontal chambers juxtaposed in the vertical direction, the horizontal chambers having a rod shaped horizontal partition arranged therebetween, each of the horizontal chambers being adjacent and arranged along the front-rear direction, each of the horizontal chambers having a width in the front-rear direction set larger than a width in the vertical direction, each rod shaped horizontal partition being arranged along the front-rear direction, wherein, upon deployment of the airbag, the front protection portion has a shrinking ratio in the front-rear direction larger than the shrinking ratio of the at least one rear protection portion in the front-rear direction.