| 摘要 |
A seat belt retractor (10) stores belt webbing (16) which is used as a restraint for a vehicle occupant. The retractor (10) includes a rotatable webbing storage spool (14) and two springs (50, 52) for biasing rotation of the spool (14). A rotatable ratchet wheel (54) is connected between the springs (50, 52) to permit the spring force from one spring (50) to be blocked from acting on the spool (14) when the ratchet wheel (54) is prevented from rotating. A movable pawl (56) selectively engages the ratchet wheel (54) to prevent rotation of the ratchet wheel (54) in a belt retraction direction (A). The pawl (56) is both pivotable and movable transversely relative to a pawl axis (90). An actuator (60) selectively pivots the pawl (56) towards engagement with the ratchet wheel (54). A rotatable clutch (64) moves the pawl (56) transversely relative to the pawl axis (90) and away from the ratchet wheel (54), independently of the actuator (60), during rotation of the spool (14) in a belt withdrawal direction (B) to reduce noise.
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