Electromagnetic actuator, clutch device using it, and power transmission device for automobile

摘要

The present invention relates to an electromagnetic actuator which reduces power consumption at the time of continuous operation with maintaining controllability. The electromagnetic actuator includes therein a permanent magnet (4) and a switching electromagnet coil (6) which switches a route along which this magnetic flux passes, and is constructed so that, in the case of performing the continuous operation, the magnetic flux of the permanent magnet (4) may pass along a route, which includes an armature (3), by exciting the switching electromagnet coil (6).