Patent ID: 8899619

Claim:
A vehicle seat, comprising: a projected member that is accommodated in a seat back, and that is projected and deployed above the seat back when inflated by a gas supply; a lateral deployment member whose upper end side is connected to the projected member, whose lower end side is connected to a front end side of a seat cushion, and that is accommodated in a lateral side of the seat cushion and a lateral side of the seat back, the lateral deployment member being deployed by tension that acts between a portion connected to the projected member and a portion connected to the seat cushion in conjunction with deployment of the projected member; and a tension support member whose one end side is supported by the seat back in a portion separated from the lateral deployment member in a seat width direction and whose other end side is connected to an upper end side of the lateral deployment member or the projected member, the tension support member being subject to the tension in the seat width direction at least when a seated passenger is restrained by the lateral deployment member.