MAGNETIC FORCE ROTATION DEVICE

摘要

A magnetic force rotation device comprising a rotor (10) supported on a rotary shaft (1), at least a pair of permanent magnets (4) arranged proximately or contiguously to each other in the circumferential region of the rotor (10) with the surfaces intersecting the rotational direction used as magnetic poles and the magnetic poles (4a) of the same polarity facing each other, and a core (7) opposing the outer circumferential surface of the rotor (10) through an air gap and having a plurality of salient pole portions (12) along the rotational direction of the rotor (10), wherein the device is further provided with an electromagnet (stator) (9) arranged to generate an electromagnetic field of the opposite polarity between adjacent salient pole portions (12) by winding a driving coil (8) around the salient pole portion (12) of the core (7), and the rotor (10) is rotated by utilizing the repulsion force between a static magnetic field of the permanent magnet (4) of the rotor (10) and an electromagnetic field generated from the plurality of salient pole portions (12) of the core (7). Consequently, the size of the device is reduced and its rotation control is facilitated.