SIDE AIRBAG DEVICE

The present invention provides a side airbag device (1) capable of restricting movement of an occupant to an inner side in a vehicle width direction in an early stage. The side airbag device (1) includes an inflator (10) configured to generate a gas; and a bag-shaped airbag (20) inflatable and deployable in a space above a console box (60) and beside an occupant (40) seated in a vehicle seat (30) in response to the gas upon activation of the inflator (10) to protect a lateral portion of the occupant (40). The airbag (20) includes a torso protection portion (21) inflatable and deployable in a space beside a torso (41) of the occupant (40), a support portion (22) provided on a console box (60) side of the torso protection portion (21) and configured to be pushed onto a top surface of the console box (60) in an inflated and deployed state, and a hip protection portion (23) inflatable and deployable between a hip (42) of the occupant (40) and a lateral portion of the console box (60). The support portion (22) and the hip protection portion (23) are defined by a continuous chamber. The inflator (10) is positioned from above to below the support portion (22) in a side view of the vehicle. The airbag (20) is mounted on a lateral portion of the vehicle seat (30) via the inflator (10).