| 摘要 |
PROBLEM TO BE SOLVED: To enhance productivity of a dynamo-electric machine, while reducing vibration and noise thereof.SOLUTION: A rotor core 22 has apertures 25 extending from one end to the other end in the axial direction of the dynamo-electric machine, respectively, on the outer peripheral side of a plurality of rotor slots 21. The rotor core 22 has a plurality of regions, including at least a first region and a second region arranged contiguously in the circumferential direction. Relative positions of the apertures 25 to respective rotor slots 21, in the circumferential direction, are all the same in the first region, and relative positions of the apertures 25 to respective rotor slots 21, in the circumferential direction, are all the same in the second region, and shifted in the circumferential direction compared with the relative positions in the first region. |
