device for antriebsabschaltung the motors of electric roller shutter doors, awnings, blinds, etc.

摘要

A device is shown and described for cutting off the drive of the motor of electrically operated revolving shutters, roll-up doors, canvass blinds and the like, which motor is suspended by means of a coupling element (23) such as a polyhedron in a motor bearing acting as a torque bracket. Cutting off is effected by means of at least one switching element (15; 27) which, at least in an end position of the shutter, canvass blind cloth and the like, interrupts a switch (20; 30) actuating the motor circuit. A special feature of this device is that the switching element (15; 27) in each case forms the torque bracket against the action of a spring (18; 32), adjustable in its restoring force, acting on a switch closing the circuit of the motor, the torque bracket being coupled to the coupling element (23) to be taken along by its movement, and that the torque acting on the switching element in the event of a blocked motor - for example due to reaching an end position, other obstruction or the like - or in the event of reaching an adjustable tensile force of the shutter, canvass blind cloth and the like, actuates the switch (20; 30).