Vehicle rear side airbag device fixing structure

A vehicle rear side airbag device fixing structure comprising:

• a child seat fixing member having an elongated shape that is disposed at a downward side of a rear seatback of a rear seat of a vehicle, a length direction of the child seat fixing member being in a vehicle width direction, the child seat fixing member being fixed to a vehicle body or a seat frame, and the child seat fixing member being provided with a fixing portion for child seat fixing;
• and
• a vehicle rear side airbag device including an airbag module having a lower end portion that is fixed to the child seat fixing member via a rigid member that is a separate body from the seat frame and that is superposed with the seat frame, a side airbag that is provided in the airbag module being inflated and deployed sideward of an occupant sitting on the rear seat in the event of a side collision of the vehicle, wherein
• a side of the rear seat includes a seat frame made of resin, the airbag module includes an inflator that inflates and deploys the side airbag by producing gas inside the side airbag, and the airbag module is fixed by being fastened both to the rigid member and to the seat frame in a height region at which the inflator is disposed, and
• a lower end side of the rigid member is fixed to the child seat fixing member.