| 摘要 |
PURPOSE:To raise the efficiency, to simplify the construction and to facilitate a self-starting by forming an armature coil in a cross shape, and bringing a conductor unit effective for a torque into coincidence with the width of a pole. CONSTITUTION:A rotational shaft 1 is secured with a soft steel disk 5, and a disk-shaped magnet 5 is so secured as to form a magnetic path with the soft steel disk 7. The magnetic field of the magnet 5 is closed at the magnetic path by a magnetic disk 6 of the downside through an armature coil 4. An armature coil 4 is secured onto the cross-shaped disk 6. The coil 4 is formed in a cross shape, and conductor units 4a-4d effective for torque are coincident to the widths of the poles 5a, 5b.... |
