| 摘要 |
The invention relates to a seat belt retractor (10), comprising a frame (12), a sensor (16) for vehicle-sensitive blocking that having a sensor lever (22), comprising a belt reel (14) and a cam follower (30) that is coupled to the belt reel (14) by way of a coupling (32), which is adjustable between a starting position, in which the sensor lever (22) is blocked, and a pull-out position, in which the sensor lever (22) is released. The coupling (32) is a wrap spring coupling having a drive element (34) that is coupled to the belt reel (14) and an output element (40) connected to the cam follower (30), wherein the drive element (34) and the output element (40) each have an annular outer friction surface (38, 44) and are arranged concentrically to one another. A spiral spring (46) is provided, which bears against the friction surfaces (38, 44) and which couples the output element (40) to the drive element (34). |
