| 摘要 |
PURPOSE:To enhance a motor efficiency by disposing a stator winding through an air gap on the outer periphery of a rotor, disposing a core rotating together with the rotor through an air gap on the outer periphery, thereby eliminating the variation in a magnetic flux to prevent an iron loss. CONSTITUTION:A rotor core 2 and a permanent magnet 3 are mounted on a rotational shaft 1, and a stator winding 10 is provided through the prescribed air gap at the outer peripheral side. Further, a core 14 is provided through the prescribed air gap at the outer peripheral side of the winding 10. The core 14 is coupled by a holder 15 with the shaft 1, and rotated synchronously with the rotor. Thus, a variation in a magnetic flux from the magnet 3 is eliminated at the portion of the core 14 to eliminate an eddy current i.e., an iron loss, thereby performing high efficiency of a motor. |
