| 摘要 |
PURPOSE:To eliminate the laminated core of a stator thereby to reduce the size of a whole motor by forming a permanent magnet rotor in a columnar shape, and composing the stator of a winding aligned at a predetermined electric angle with a cylindrical yoke. CONSTITUTION:A permanent magnet rotor 1 is formed in a columnar shape having a rotor shaft 2 as a center and disposed at the center. A stator 4 is composed of windings 5 aligned circumferentially through a predetermined gap on the outer periphery of the rotor 1, a yoke 6 disposed on the outer periphery of the winding 5 and magnetic pieces 7. The windings 5 are so aligned that the electric center angle of one side between adjacent windings becomes approx. 140-150 deg.. |
