Patent ID: 7559573

Claim:
A vehicle side airbag apparatus, comprising: a vehicle door having a window glass and a door trim attached on an inner side of the vehicle below the window glass; a gas generator that generates gas; a side airbag that is provided in a folded or rolled state in a side portion of a seatback of the seat, which is closer to the door, and has a lower chamber corresponding to a chest of an occupant and an upper chamber corresponding to a head of the occupant, the side airbag being deployed by the gas supplied from the gas generator; and a deployment direction restrictor that restricts expansion of the upper chamber so that the upper chamber expands toward the door with respect to the lower chamber during deployment of the side airbag, the deployment direction restrictor being installed in the side airbag such that a first attachment position of the deployment direction restrictor on a door-side base cloth of the side airbag is located higher than a second attachment position of the deployment direction restrictor on a seat-side base cloth of the side airbag; wherein when the side airbag is in a deployed state, the attachment position of the deployment direction restrictor on the door-side base cloth is lower than an upper end of the door trim, or at a same height as the upper end of the door trim.