| 摘要 |
PURPOSE:To eliminate an overheat even when a motor is operated for a long period by exposing the upper surfaces of a magnet rotor, a yoke and an armature with the atmosphere. CONSTITUTION:A magnetic path of a magnet rotor 5 is composed of a circular magnetic unit 7, and an armature coil 6 is placed on the magnetic unit 7. The coil 6 and the magnetic unit 7 are buried in an plastic injection mold to be molded in a disc shape to form a stationary armature 3. The rotor 5 is bonded to a soft steel plate 2 of disc shape so that the center of rotation of the rotor 5 becomes a rotational shaft 1. The center of the plate 2 is secured on the top of the shaft 1. |
