| 摘要 |
PURPOSE:To simplify the construction by arranging fixedly a stationary armature so that N- and S-poles of an electromagnet or a ferrite magnet are opposed to the poles of a magnet rotor and simultaneously disposed in parallel in the circumferential direction. CONSTITUTION:A disc-shaped magnetic unit 2 becomes a magnetic path of a magnet rotor 5. An armature coil 6 is placed on the top of a magnetic unit 3. 2-4 of the coils 6 are radially disposed in sector shape. An electromagnet or a ferrite magnet is disposed to oppose to the rotor 5, the N- and S-poles are opposed to the pole faces of the rotor 5, and disposed so that the N- and S- poles are disposed in the circumferential direction. The relative positions between the coils 6 and the rotor 5 are disposed at the prescribed relative position by the electromagnet or the ferrite magnet, and started in the desired direction by energizing the coil 6. |
