SEAT BELT RETRACTOR WITH RACK PRETENSIONER

摘要

A seat belt retractor (100) has a rotatable spool (122) upon which a seat belt (121) can be wound and a pretensioner (190) for winding the spool (122) in a belt winding direction to rewind the seat belt upon the spool (122); the pretensioner (190) comprising a rack and pinion mechanism (350) activated by a pyrotechnic device (400) for causing a clutch assembly (200) to change state from a disengaged mode to an engaged mode in which the clutch assembly drivingly engages the spool (122).