AIRBAG DEVICE

An object is to securely join a cylindrical inflator of an airbag device to an airbag, using a small number of parts. An inflator (20) provided with a pair of bolts (22) (24) on the peripheral surface thereof is inserted into a gas introduction portion (35) of the airbag (30). At this time, the bolts (22) (24) are inserted through bolt insertion holes (36) (37) provided in the gas introduction portion (35) and inflator attaching holes (41) (42) provided in an attachment bracket (40) for attaching the airbag (30) to a vehicle body, and nuts are screwed thereon from the outside of the attachment bracket (40) to join the inflator and the airbag.