ROTOR UNIT

• Main Authors: AONO MASATO, NAKANISHI KEITA, UDA TAKAYUKI, HAGA HIDEHIRO
• Format: Patent
• Language: English; Japanese
• Published: 27.04.2017
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

PROBLEM TO BE SOLVED: To provide a technology that inhibits damage of magnets.SOLUTION: A rotor unit 32 includes: rotary bodies 41, 42 arranged along a center axis; and a cover 43 covering peripheries of the rotary bodies. Each rotary body includes: an annular rotor core 51 that encloses the center axis; magnets 53 arranged around the rotor core; and a holder 52 having an annular connection part positioned at an axial one end of the rotor core and each magnet. The cover has: a cylindrical part covering peripheries of the magnets; a first annular part covering the axial one end of the connection part; and a second annular part covering the other axial end of the connection part. A bottom surface of the connection part has plural cutouts, and a radial inner end part of one of the first annular part and the second annular part gets into one of the cutouts.SELECTED DRAWING: Figure 7 【課題】マグネットの損傷を抑制できる技術を提供する。【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回転体４１、４２と、前記回転体の周囲を覆うカバー４３と、を備える。回転体は、前記中心軸を包囲する環状のロータコア５１と、ロータコアの周囲に配列されるマグネット５３と、前記ロータコアおよび前記マグネットの軸方向一端に位置する円環状の連結部を有するホルダ５２と、を有し、前記カバーは、前記マグネットの周囲を覆う円筒部と、前記連結部の軸方向一端を覆う第１環状部と、前記連結部の軸方向他端を覆う第２環状部と、を有する。前記第連結部の底面に、複数の切り欠きを有し、前記第１環状部と前記第２環状部の何れか一方の径方向内側の端部が、複数の前記切り欠きの内の一つに入り込む。【選択図】図７