| 摘要 |
<p>Limit switch system for gear motors, in particular for manoeuvring roller shutters, blinds and the like, comprising: an internally toothed annular gear (18) driven by the shaft on which the shutter or the blind is rolled up and meshing on a pinion (20) rotating idly on a screw (12), parallel to the axis of the said rolling-up shaft; it being possible for a clutch (30), integral with the said screw, to be secured to the idly-rotating pinion by translational displacement of the screw; a clutch button (14), comprising a cam (38) making it possible to act on the said screw in translation and a reference mark (16); a slide (24) mounted on the said screw, immobilised in rotation and capable of bearing on the microcontact button (32) of the control system of the gear motor in order to stop the latter, thus forming the top or bottom limit according to the direction of rolling of the shutter or of the blind. <IMAGE></p> |
