| 摘要 |
The invention relates to an adjusting device for an adjusting element (2) which is mounted on an axle (1) and by means of a drive mechanism (3) can be freely turned in both directions of rotation and blocked in each adjusted position. The device comprises two jaws (8, 8') which by means of the drive mechanism can together be moved in a housing (7) and at at least one end (15 , 15') are each in zero-play contact with an arm (14, 14') of a scissors-type system (12). The counter-arms (11, 11') of the scissors-type system are in zero-play contact with a driven element (10) which is rotationally mounted a nd connected to the adjusting element.
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