| 摘要 |
PROBLEM TO BE SOLVED: To provide the rotor of a motor having a non-perfect circular rotor core, capable of suppressing increase of windage loss in a gap between a stator and the rotor while ensuring merit of forming the rotor core in a non-perfect circular shape and capable of suppressing iron loss of the motor.SOLUTION: Disclosed is a rotor of a motor around which a stator is arranged. The rotor includes: a rotor core 40; and a non-magnetic windage loss reduction part 60. The rotor core is integrally formed by laminating magnetic steel sheet and has a shape having an outer edge in which a recess 50 recessed to the center side with respect to a true circular virtual outer periphery when viewed from the rotating shaft. The windage loss reduction part is arranged so as to cover the recess of the rotor core from the outside and integrated with the rotor core to reduce the windage loss when the rotor is rotated.SELECTED DRAWING: Figure 4 |
