ROTOR, METHOD FOR MANUFACTURING ROTOR, AND ROTARY ELECTRIC MACHINE

• Main Authors: YOSHII KENICHIRO, TAKEDA HOMARE
• Format: Patent
• Language: English; Japanese
• Published: 01.06.2023
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

To provide a rotor capable of reducing a degree of difficulty in manufacturing thereof and reducing material costs when a permanent magnet is fixed to a rotor core, a method for manufacturing the same, and a rotary electric machine including the rotor.SOLUTION: A rotor includes: a rotor core 5 having an axis of rotation 6 that serves as a center of rotation and that is inserted in a central part; and a plurality of permanent magnets 7 arranged at certain intervals along the circumferential direction of the rotor core 5. Each of the permanent magnets 7 has an insertion hole 51 penetrating the rotor core 5 in an axial direction, the insertion holes being formed by the same number as the number of the permanent magnets 7 in the circumferential direction. There are provided. inside the insertion hole 51, a plurality of wedge members 8 between a radially inside inner end surface 7b of the permanent magnet 7 and an inner diameter end surface 53a of the insertion hole 51 facing the inner end surface 7b, the wedge members being brought into close contact with both of the inner end surface 7b and the inner diameter end surface 53a.SELECTED DRAWING: Figure 3 【課題】回転子コアに永久磁石を固定する場合に、その製造難易度を下げ、かつ材料費を低減できる回転子、その製造方法、および、回転子用いた回転電機を提供する。【解決手段】回転中心となる回転軸６が中央部に挿着された回転子コア５と、この回転子コア５の周方向に沿って一定の間隔を隔てて配置された複数個の永久磁石７を備え、各々の永久磁石７は、回転子コア５を軸方向に貫通し、かつ周方向に永久磁石７と同数分だけ形成された挿入孔５１を有しており、この挿入孔５１の内部には、永久磁石７の径方向の内側の内端面７ｂと、この内端面７ｂに対向する挿入孔５１の内径端面５３ａとの間において、内端面７ｂと内径端面５３ａの双方に密着された複数のクサビ部材８が設けられている。【選択図】図３