An airbag assembly in a vehicle is provided. The airbag assembly comprises a base and a housing to be inserted into the base. The housing includes a first connection part protruding from an outer wall of the housing and a second connection part extending from the first connection part and facing the outer wall and the base includes a first slot extending in a first direction and a second slot extending from the first slot at a second direction different from the first direction, and the first slot includes an open end to receive the first connection part. The housing is connected with the base when first connection part is received in the second slot.

An inflator and airbag are fixed by a fixing member including a lower fixing member that supports and fixes the inflator from a lower surface side of a plate portion. The lower fixing member has a tubular wall portion and a flange portion formed at an opening at one end. The tubular wall portion has an inner surface in a shape that is fitted to a circumferential wall surface, including a lower annular step surface, of the inflator housing. The flange portion has a plurality of bolt holes and abuts against a lower surface of the plate portion. The airbag and the lower fixing member are fixed with a bolt and a nut mounted through the airbag, the plate portion, and the flange portion of the lower fixing member.

An airbag device includes: a case configured to receive an airbag that is folded, configured to enable the airbag under inflation to protrude from an upper opening, and including a bottom wall portion and a side wall portion that rises in a substantially tubular shape from a peripheral edge of the bottom wall portion; and a coupling member surrounding the case and coupled to the case by a fixing member, wherein: the case is formed to retain a rising shape of the side wall portion from the bottom wall portion by performing a bending process on a sheet metal material; and the joining piece portion and the joined portion include through-holes, and are coupled to each other and are coupled to the coupling member using the fixing member penetrating through-holes in a state in which the joining piece portion and the joined portion are superimposed on each other.

An airbag assembly in a vehicle is provided. The airbag assembly comprises a base and a housing to be inserted into the base, The housing includes a first connection part protruding from an outer wall of the housing and a second connection part extending from the first connection part and facing the outer wall and the base includes a first slot extending in a first direction and a second slot extending from the first slot at a second direction different from the first direction, and the first slot includes an open end to receive the first connection part. The housing is connected with the base when first connection part is received in the second slot.

A gas generator includes an igniter assembly configured to release the combustion product and including an igniter body, the igniter body including an igniter cup ruptured by a combustion product and an electro-conductive pin that supplies a current, a collar portion holding the igniter body, and a holding portion interposed between the igniter body and the collar portion, a housing including a combustion chamber accommodating a gas generating agent, and including a gas discharge port through which a combustion gas is discharged, and an elastic member being disposed between the igniter assembly and the gas generating agent with an axial direction of the elastic member being in a direction same as a direction of the housing, the elastic member including a regulation portion at an inner periphery thereof, the regulation portion being configured to regulate a direction in which the igniter cup ruptured expands.