Patent ID: 9475446
Filing Date: 2016-10-25
CPC Classification: B60R

Claim Text:
1. A side airbag apparatus comprising an airbag, the apparatus being adapted for installation in a vehicle seat, wherein the vehicle seat includes a seat back, which has a seat frame forming a framework of the seat back and an elastic seat pad provided about the seat frame, and a case provided on a side portion of the seat back, the case includes a housing, an interior space of which forms a storage portion for storing the airbag, and a cover for covering the storage portion, the housing and the cover are harder than the seat pad, the housing includes a front wall, a rear wall, and a side wall portion, which form the storage portion, the cover includes a cover main body, which has a front end and is located on an outer side of the housing, a front wall portion fixed to the front wall of the housing, a rear wall portion fixed to the rear wall of the housing, and a hinge portion provided at a boundary between the cover main body and the rear wall portion of the cover, the airbag is stored in the storage portion and fixed to the vehicle seat, in response to an impact from a side of the vehicle seat, inflation gas is supplied to deploy and inflate the airbag, the apparatus is configured such that at least a part that is forward of the hinge portion is displaced sideways from the vehicle seat with the hinge portion of the cover functioning as a pivot, so that the storage portion is opened to allow the airbag to be deployed and inflated forward, the airbag includes at least an upstream inflation portion that forms at least a rear part of the airbag and receives inflation gas, and a downstream inflation portion, at least a part of which is located forward of the upstream inflation portion, wherein the downstream inflation portion receives inflation gas that has flowed through the upstream inflation portion, an outline of the airbag is formed by an airbag main body, the upstream inflation portion and the downstream inflation portion are formed by dividing an inside of the airbag main body by a vertical partition, which has a gas flow restricting portion, and the upstream inflation portion has a front end that is located forward of the front end of the cover main body when the upstream inflation portion is inflated.