Integrated seat belt and seat support

摘要

A vehicle seat (16) has a seat back portion (24) for engaging an occupant (12) of a vehicle (14). A length of seat belt webbing (18) extends around a portion of the occupant (12). A seat belt retractor (44) biases the length of seat belt webbing (18) in a belt retraction direction. The seat belt retractor (44) allows the length of seat belt webbing (18) to move in a belt withdrawal direction, opposite the belt retraction direction, when a predetermined force is applied to the length of seat belt webbing (18). A blocking mechanism (70) blocks movement of the length of seat belt webbing (18) in the withdrawal direction. The blocking mechanism (70) is actuated upon the occurrence of a vehicle collision. A portion of the length of seat belt webbing (18) restrains movement of the seat back portion (24) relative to the vehicle during a vehicle collision.