Retractor shaft-rotating type pretensioner

Details Retractor shaft-rotating type pretensioner Retractor shaft-rotating type pretensioner

B - Operations, Transporting

60

R

B60R 22/46 (2006.01)

Patent

CA 2062295

Abstract of the Disclosure Retractor Shaft-Rotating The Pretensioner A retractor shaft-rotating type pretensioner for a vehicle seat belt has a pulley that is normally not engaged with the belt reel shaft of the retractor but is movable into driving engagement with the belt reel shaft upon operation of a power source and rotates it such as to rotate the reel shaft in the belt-winding direction and thereby apply a pretension to the belt. A movable spacer is detachably coupled to the pulley such that it is moved by the pulley upon rotation of the pulley by the power source from a retracted position to an engaging position in which it is engaged between the pulley and a portion of a fixed member and maintains the pulley in driving engagement with the reel shaft and in the engaging position is uncoupled from the pulley so that the pulley can continue to rotate.

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