US 12,266,980 B2
Rotary electric machine and method of manufacturing rotary electric machine
Junya Suzuki, Tokyo (JP); Mitoru Yabe, Tokyo (JP); Hideya Nishikawa, Tokyo (JP); and Masafumi Okazaki, Tokyo (JP)
Assigned to Mitsubishi Electric Corporation, Tokyo (JP)
Appl. No. 18/012,708
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Sep. 9, 2020, PCT No. PCT/JP2020/034124
§ 371(c)(1), (2) Date Dec. 23, 2022,
PCT Pub. No. WO2022/054168, PCT Pub. Date Mar. 17, 2022.
Prior Publication US 2023/0336041 A1, Oct. 19, 2023
Int. Cl. H02K 1/28 (2006.01); H02K 1/278 (2022.01)
CPC H02K 1/28 (2013.01) [H02K 1/278 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A rotary electric machine comprising:
a stator;
a rotor core provided on an inner circumferential side of the stator and fixed to an output shaft of a rotor;
a plurality of magnets arranged in a circumferential direction and fixed to an outer circumferential portion of the rotor core; and
a magnet holder fixing the plurality of magnets to the outer circumferential portion of the rotor core,
wherein the magnet holder includes a base portion which is provided on a side of one surface of the rotor core in an axial direction and through which the output shaft is inserted, and an arm portion which has a first end connected to the base portion and extends in the axial direction, and
the base portion includes an inner circumferential portion having an annular shape, an outer circumferential beam having an annular shape and provided on an outer circumferential side of the inner circumferential portion and spaced apart from the inner circumferential portion, and a connection beam connecting the inner circumferential portion and the outer circumferential beam, the first end of the arm portion being connected to the outer circumferential beam.