US 11,916,442 B2
Rotor, rotary electric machine, method of manufacturing rotor, and method of collecting permanent magnet
Yasuhito Takei, Saitama (JP); Hiroshi Kimura, Saitama (JP); and Atsushi Kubota, Saitama (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Feb. 22, 2022, as Appl. No. 17/676,861.
Claims priority of application No. 2021-047862 (JP), filed on Mar. 22, 2021.
Prior Publication US 2022/0302782 A1, Sep. 22, 2022
Int. Cl. H02K 1/27 (2022.01); H02K 1/28 (2006.01); H02K 15/03 (2006.01); H02K 15/00 (2006.01); H02K 1/276 (2022.01)
CPC H02K 1/28 (2013.01) [H02K 1/276 (2013.01); H02K 15/0006 (2013.01); H02K 15/03 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A rotor comprising:
a rotor core fixed to a shaft and including a plurality of through holes along an axial direction of the shaft;
a permanent magnet disposed in each of the plurality of through holes;
a functional fluid having a magneto rheological effect of fixing the permanent magnet in each of the plurality of through holes;
a pair of end face plates disposed at one end and another end of the rotor core in the axial direction of the shaft, the pair of end face plates covering end surfaces of the permanent magnet disposed in each of the plurality of through holes; and
a pair of collars fixed to an outer peripheral surface of the shaft and abutting an outer surface of each of the pair of end face plates in the axial direction, such that the rotor core and the pair of end face plates are pressed inward in the axial direction and fixed to the shaft.