Patent ID: 6935477

Claim:
In a magnet type clutch device constructed by combining a magnet coupling and an electromagnetic clutch wherein the electromagnetic clutch is constructed by a magnetizing coil arranged within a clutch rotor fixed to an input shaft, and the magnet coupling has a permanent magnet rotating body rotatably supported by an output shaft, an armature held by this rotating body so as to be moved forward and backward, a disk fixed to said output shaft, and a conductor or a hysteresis material attached to said disk so as to be opposed to a permanent magnet mounted to said permanent magnet rotating body with a slight gap therebetween, and is constructed so as to integrally rotate the permanent magnet rotating body and said disk by an attractive action taken between said permanent magnet and the conductor or the hysteresis material, and is controlled so as to be turned ON/OFF by said electromagnetic clutch; the improvement that the permanent magnet mounted to said permanent magnet rotating body is set to have multiple poles in a circumferential direction, and magnetic loop elements are alternately assembled in the circumferential direction on inner and outer circumferential sides of each of S and N poles, and a rotation speed of said disk can be changed by switching and controlling the direction of a magnetic flux of said electromagnetic clutch.