| 摘要 |
PURPOSE:To raise the efficiency and to stabilize the operation of a semiconductor motor by securing a ring having a sub salient pole group through a spacer on the salient pole of a stationary armature. CONSTITUTION:A rotational shaft 1 is supported to a ball bearing 1a press-fitted to a cylindrical support 24, and armature coils 4a, 4b, 4c, 4d... are respectively mounted on the salient poles 3a, 3b... of an armature 3. A magnet rotor 5 is composed of the poles 5a, 5b... of a ferrite magnet of 90 deg. opening angle, and secured to the inside of a rotor 5d of cup-shaped soft steel. A ring 27 having sub salient pole group is bonded through a spacer 25 to the outside of the poles 3a, 3b... of the armature 3 via a slight air gap from the poles 5a, 5b... of the rotor 5. |
