AUTOMATIC REWINDING TYPE SAFETY BELT RETRACTORS

摘要

In an automatic spring biassed seat belt retracot for passenger seat belts in vehicle a winding reel (15) has a coil spring(17)which winds up as the belt webbing is pulled off the reel, the reel is mounted in a frame (1) with internal teeth (30,31) in apertures (34,35) on each side (22,23) of the frame and the reel assembly is rigidly rockable about a pivot axis 26-45 displaced from the reel periphery to achieve programmed synchronised meshing of teeth(20, 21)of the reel with the teeth of the apertures to lock up the reel when excessive vehicle decleration or excessive webbing pull-out acceleration is sensed by inertia sensing means and such synchronised movement being assured by the manner of the reel mounting on a U-shaped needle arrangement(14, 26, 31)in the frame.