Seat belt retractor

摘要

A seat belt retractor (12) comprises a frame (40), a seat belt webbing spool (42) rotatably mounted in the frame (40), and an actuator (70) for locking the seat belt webbing spool (42) against rotation in at least one direction (B) in the frame (40). The actuator (70) is mounted to the frame (40). An accelerometer (82) provides an electrical output signal indicative of vehicle deceleration. The accelerometer (82) is mounted on the frame (40). A controller (84) monitors the electrical output signal and causes the actuator (70) to lock the seat belt webbing spool (42) against rotation in the at least one direction (B) upon the occurrence of a predetermined amount of vehicle deceleration. The controller (84) is mounted on the frame (40).