| 摘要 |
A servo-unit for an electrical door-locking system, especially central-locking system, has, in a housing, a displaceably guided rack (7) which is coupled to a hand-actuation member. The rack (7) has on both sides a toothing (12, 13), into which a respective pinion (14 or 15) engages. A gearwheel (16, 17) is arranged coaxially with each of the pinions (14, 15). These gearwheels (16, 17) are of such a diameter that they mesh in one another. One of the gearwheels (16, 17) is driven by means of an electric motor (8) and a pinion (18). <IMAGE>
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