| 摘要 |
<p>This geared-motor unit comprises an electric motor (1), and a position-recopying reducing gear with cycle programmer; the reducing gear comprises a train, an end pinion of which carries a rotating electrical track (30) associated with fixed brushes (31,32,33,34) of a control circuit, and which forms a stage for selecting the phase of the cycle; a second rotating electrical track (40) is carried by an input stage of the reducing gear and interacts with other fixed brushes (41,42) in order to form the stage validating the phase selected by the selection track (30). This arrangement makes the operation of the geared-motor programmer unit silent, which unit can, furthermore, consist of robust pieces. <IMAGE></p> |
