Electromagnetic clutch e.g. electromagnetic friction surface-clutch, for air conditioning system in omni-bus, has solenoid coil and sensor coil with same number of turns, commonly wounded and inserted in common groove

摘要

The clutch has a slippage monitoring system, and a drive part that stands in connection with a drive motor. An additional sensor coil (12) is provided, in which an electrical voltage is induced during slippage of an anchor plate against a rotor (4) such that the magnetic flux is changed by the rotor, the plate and a solenoid coil carrier. The electrical voltage is applied to an electronic monitoring device, which interrupts the voltage supply to a solenoid coil (8). The solenoid coil and the sensor coil have same number of turns and are commonly wounded and inserted in a common groove.