| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure which prevents magnets from being displaced in upper and lower direction, the magnets being mounted on a rotor core so as to reduce torque ripples and speed ripples. SOLUTION: The stacked rotor core 1 includes: a plurality of projections 2 provided in the circumferential direction at equal intervals on the outer circumferential surface of the rotor core 1, and at least two projections 3 provided in the axial direction between the adjacent projections 2 provided in the circumferential direction. COPYRIGHT: (C)2010,JPO&INPIT
|
