| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotor core that reduces leakage magnetic flux while preventing short-circuit between core sheets, a rotor using the same, and a manufacturing method of the rotor core.SOLUTION: A rotor core 10 is formed by laminating tabular core sheets 12. Each of the core sheets 12 is constituted of an outside core 20 at an outer circumferential side from a magnet hole 18, an inside core 22 at an inner circumferential side, and a bridge 24 connecting the outside core 20 and the inside core 22. The bridge 24 includes a magnetically reformed part 26. The magnetically reformed part 26 is where part of the bridge 24 is melted and solidified and permeability thereof becomes lower than permeability of an original magnetic steel sheet. |
