US 12,136,854 B2
Rotating electrical machine
Takumi Tominaga, Kyoto (JP); Yuta Kimura, Kyoto (JP); Takeshi Honda, Kyoto (JP); and Yosuke Tanaka, Kyoto (JP)
Assigned to NIDEC CORPORATION, Kyoto (JP)
Filed by NIDEC CORPORATION, Kyoto (JP)
Filed on Jun. 24, 2022, as Appl. No. 17/848,400.
Claims priority of application No. 2021-108973 (JP), filed on Jun. 30, 2021.
Prior Publication US 2023/0006488 A1, Jan. 5, 2023
Int. Cl. H02K 1/276 (2022.01)
CPC H02K 1/276 (2013.01) [H02K 1/2766 (2013.01); H02K 1/2773 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A rotating electrical machine comprising:
a rotor rotatable about a central axis; and
a stator located radially outside the rotor,
wherein the rotor includes
a rotor core that includes a plurality of electromagnetic steel plates laminated in an axial direction, the rotor core having a plurality of accommodation holes, and
a plurality of magnets respectively accommodated in the plurality of accommodation holes,
the rotor core including
a first recess recessed from a first core end face on a first axial side to a second axial side,
a first swaged part provided on a bottom surface of the first recess, and
a first protrusion that protrudes toward each of the magnets in a direction in which an inner peripheral edge of each of the accommodation holes intersects an axial direction, the first protrusion butting against a side face of the magnet.