Patent ID: 8613465
Filing Date: 2013-12-24
Classification: B60R

Abstract:
1. A side airbag device comprising an airbag that is disposed in a folded state in an inside part of a vehicle body, and is expanded by gas supplied from an inflator and deployed in a fore-and-aft direction of the vehicle body between a vehicle body inside face and an occupant, wherein the airbag comprises a first base fabric disposed on the occupant side in a vehicle width direction, a second base fabric disposed on the vehicle body inside face side in the vehicle width direction, a third base fabric sandwiched between the first and second base fabrics, a first bag half body formed from the first base fabric and the third base fabric, a second bag half body formed from the second base fabric and the third base fabric and connected to the inflator, and a through hole that is formed in an end part of the third base fabric on the side distant from the inflator and that provides communication between the first and second bag half bodies; wherein the second base fabric and the third base fabric are joined via a joining part at a position on the inflator side relative to the through hole, and the joining part is broken by an increase in the internal pressure of the second bag half body due to gas supplied from the inflator; and, wherein the joining part is provided by breakable stitching, the breakable stitching being formed in a labyrinth shape such that gas emitted from the inflator cannot immediately reach the through hole.