US Patent 9409539 Vehicle seat airbag system and vehicle seat

A vehicle seat airbag system includes an airbag which is caused by the vehicle seat airbag system to inflate and develop within a seat back. A plurality of elastic installation supporting members is provided within a seat back frame that forms the framework of the seat back of a seat for the vehicle. A seat pad is disposed on the front surface of each elastic installation supporting member. The airbag in a contracted state is disposed rearwardly of the elastic installation supporting members. All of these components are covered by an outer layer material in a bag shape. The airbag, which inflates and develops in the seat back due to a collision or the like, elastically supports the upper body of a seated person, and elastically receives an impact force which is applied to the rear of the seat back.