| 摘要 |
PURPOSE:To obtain a motor which has high efficiency and large rotary torque by forming a permanent magnet rotor of main and auxiliary poles, and providing an NS mixtue pole between the N-pole and the S-pole of the auxiliary pole, thereby eliminating the disconnection of a torque. CONSTITUTION:A permanent magnet rotor 1 is rotatably supported oppositely to a stator 2 in which an electromagnetic coil 8 is wound. The rotor 1 is formed of a main pole 20 and an auxiliary pole 21. The pole 20 has N-poles and S-poles alternately disposed, and N-S mixture pole in which the pole 21, the N-pole, the S-pole and N-S pole are mixed are sequentially disposed. The torques generated by the poles 20, 21 are in the same direction. Thus, there is no 0 torque while the coil 8 is energized to enhance the efficiency. |
