| 摘要 |
A belt retractor for a vehicle safety belt has a frame, a belt reel which is rotatably mounted in the frame, a pretensioning drive which is adapted to drive the belt reel in a wind up direction of the safety belt and in an unwinding direction, and a coupling by means of which the pretensioning drive may be coupled to the the belt reel. The coupling comprises an actuating element which is coupled to the pretensioning drive. When the pretensioning drive is activated, the actuating element is driven in a direction that is opposite to a direction in which a driven member of the coupling is driven.
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