SEAT BELT SYSTEM

摘要

A vehicle seat belt system operational as a passive two-point or as a part passive and part active three-point seat occupant restraint. A continuous belt 15 coupled at one end to a retractor mechanism 16 mounted within a vehicle door passes through a guide ring 19 on the door frame and extends diagonally downwardly across the seat 13 to a second guide ring 23 anchored to the floor. The terminal end of the belt projects through the guide ring 23 and carries a buckle engaging element 27 that engages the guide ring 23 to prevent retraction of the belt 15, whereby the latter automatically operates as a two-point restraint system. The seat occupant has the option of extending the belt 15 as a lap belt to a buckle device 32 on the outboard side of the seat. This changes the belt system to a partially passive and partially active three-point restraint system.