ROTOR UNIT

• Main Authors: AONO MASATO, NAKANISHI KEITA, UDA TAKAYUKI, HAGA HIDEHIRO
• Format: Patent
• Language: English; Japanese
• Published: 06.08.2015
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

PROBLEM TO BE SOLVED: To provide a technique capable of suppressing damage to a magnet in a rotor unit.SOLUTION: A rotor unit 32 comprises a plurality of rotating bodies including a first rotating body 41 and a second rotating body arranged along a central axis, and a cover 43 covering the peripheries of the plurality of rotating bodies. The first rotating body comprises an annular first rotor core enclosing the central axis, a first magnet arranged around the first rotor core, and a first holder having an annular first coupling part located in one end in an axial direction of the first rotor core and the first magnet. The second rotating body comprises an annular second rotor core enclosing the central axis, a second magnet arranged around the second rotor core, and a second holder having an annular second coupling part located in the other end in an axial direction of the second rotor core and the second magnet. The cover comprises a cylindrical part 431 covering the peripheries of the first magnet and the second magnet, a first annular part covering one end in an axial direction of the first coupling part, and a second annular part covering the other end in an axial direction of the second coupling part. 【課題】ロータユニットにおいて、マグネットの損傷を抑制できる。【解決手段】ロータユニット３２は、中心軸に沿って配列される第１回転体４１と第２回転体と、を含む複数の回転体と、前記複数の回転体の周囲を覆うカバー４３とを備える。第１回転体は、中心軸を包囲する環状の第１ロータコアと、第１ロータコアの周囲に配列される第１マグネットと、第１ロータコアおよび第１マグネットの軸方向一端に位置する円環状の第１連結部を有する第１ホルダとを有し、第２回転体は、中心軸を包囲する環状の第２ロータコアと、第２ロータコアの周囲に配列される第２マグネットと、第２ロータコアおよび第２マグネットの軸方向他端に位置する円環状の第２連結部を有する第２ホルダとを有し、カバーは、第１マグネットと第２マグネットとの周囲を覆う円筒部４３１と、第１連結部の軸方向一端を覆う第１環状部と、第２連結部の軸方向他端を覆う第２環状部とを有している。【選択図】図７