公开(公告)号：US20240396416A1

公开(公告)日：2024-11-28

申请号：US18694991

申请日：2022-06-17

Applicant: NIDEC CORPORATION

Inventor： Ryoma SASAKI ,  Kentaro HIROSE ,  Shigeru MAEDA

IPC: H02K21/02 ,  H02K7/09

Abstract: A rotary electric machine includes: a rotor having a shaft extending in an axial direction and rotor magnets arranged along a circumferential direction; a stator having a coil and surrounding the rotor; a housing supporting the stator; a pair of magnetic bearings on opposite sides in the axial direction of the rotor magnet; and a position adjusting member held by the housing. The stator holds the rotor rotatably in the axial direction by a field current flowing through the coil. The magnetic bearing includes a cylindrical inner magnet fixed to the rotor and a cylindrical outer magnet fixed to the housing and surrounding the inner magnet, and holds the rotor rotatably in the radial direction. The rotor has a stepped surface facing the axial direction. The position adjusting member has an opposing surface facing the stepped surface, and is movable in the axial direction with respect to the housing.