ROTOR, MOTOR, AND METHOD OF MANUFACTURING ROTOR

To provide a rotor, a motor, and a method for manufacturing a rotor that can prevent damage and deterioration of permanent magnets caused by the crimping of a magnet cover.SOLUTION: A rotor has a rotating shaft, a rotor core, a plurality of permanent magnets 33, a magnet cover 71, and a load bearing...

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Main Authors FUJIU MASARU, OHORI RYU, KOJIMA NAOKI, KANAI TAKESHI, YONEKAWA KOJI
Format Patent
LanguageEnglish
Japanese
Published 25.11.2021
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Summary:To provide a rotor, a motor, and a method for manufacturing a rotor that can prevent damage and deterioration of permanent magnets caused by the crimping of a magnet cover.SOLUTION: A rotor has a rotating shaft, a rotor core, a plurality of permanent magnets 33, a magnet cover 71, and a load bearing block 70A. The plurality of permanent magnets 33 are disposed on the outer periphery of the rotor core. The magnet cover 71 covers the outside of the rotor core and the plurality of permanent magnets 33 and has a flange part 71b bent inward in the radial direction at the axial end. The load bearing block 70A is disposed between the axial end face of the rotor core and the flange part 71b, and comes into contact with the flange part 71b and the rotor core. The radial inner edge of the flange part 71b is so shaped that its radial inner end is separated from the axial outer end face of the load bearing block 70A.SELECTED DRAWING: Figure 11 【課題】マグネットカバーのかしめに伴う永久磁石の損傷や劣化を未然に防止することができるロータ、モータ、及び、ロータの製造方法を提供する。【解決手段】ロータは、回転軸、ロータコア、複数の永久磁石33、マグネットカバー71及び荷重受けブロック70Aを備える。複数の永久磁石33は、ロータコアの外周部に配置される。マグネットカバー71はロータコアと複数の永久磁石33の外側を覆い、軸方向の端部に径方向内側に屈曲したフランジ部71bを有する。荷重受けブロック70Aはロータコアの軸方向の端面とフランジ部71bの間に配置されて、フランジ部71bとロータコアに当接する。フランジ部71bの径方向内側の縁部は、径方向内側の端部が荷重受けブロック70Aの軸方向外側の端面から離間する形状とされている。【選択図】図11
Bibliography:Application Number: JP20200088362