Patent ID: 7841620

Claim:
A vehicle airbag device, comprising: a side airbag that is disposed sidewardly of a vehicle seat; and a case for accommodating the airbag in a folded state, wherein the case comprises: a lid positioned in a direction of deployment of the side airbag; a wall for restricting deployment of the side airbag in the deployment direction, wherein the wall is supported by a seat back frame of the vehicle seat; a plurality of tear lines provided in the lid such that the plurality of tear lines rupture when the side airbag deploys and separate the lid into a plurality of parts; a plurality of hinge parts positioned on a boundary between each of the separated lid parts and the wall; and a plurality of secondary tear lines provided in the lid that extend from respective distal ends of the plurality of tear lines toward the wall, wherein the secondary tear lines have a thickness less than a thickness of the wall.