Patent attributes
In an airbag apparatus, a case includes a peripheral wall portion and a protruding opening. An airbag cover includes a door portion covering the protruding opening, and four side wall portions protruding from the door portion. The peripheral wall portion includes two locking wall portions and two connection wall portions connecting the two locking wall portions to each other. A first pair of the four side wall portions are arranged on outer peripheral sides of the locking wall portions. The first pair of the four side wall portions have a locking hole locked by a locking claw on the locking wall portions. A second pair of the four side wall portions cover an inner peripheral side of the peripheral wall portion located at vicinities of corner portions of a peripheral edge of the protruding opening.
