| 摘要 |
<p>A motor-driven sliding device for a support (13) for nozzles delivering water under pressure, in particular in shower compartments, comprises a guide (10) along which slides a guide shoe (12) carrying the support (13). The guide shoe (12) is made to move along the guide (10) by means of a cable (14) drawn by means of a pulley (17) keyed onto a ratiomotor (25). The ratiomotor (25) is controlled by a control circuit (26) which receives a signal emitted by an optoelectronic sensor (23) each time one of the holes (24) made in the pulley (17) passes in front of it. The signals emitted by the sensor (23) are used by the controller (26) to obtain the position of the guide shoe (12) along the guide (10). The controller then moves the guide shoe continuously to and fro between two position previously memorized by means of a control keyboard (27). Moreover, in the event of excessive absorption of power by the motor, indicating an obstacle along the path of the support (13), the controller (26) reverses the direction of movement of the guide shoe (12).</p> |
