US 12,009,698 B2
Rotor, electric motor, fan, and air conditioner
Takaya Shimokawa, Tokyo (JP); Hiroki Aso, Tokyo (JP); and Naoki Tamura, Tokyo (JP)
Assigned to Mitsubishi Electric Corporation, Tokyo (JP)
Appl. No. 17/770,088
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Dec. 12, 2019, PCT No. PCT/JP2019/048607
§ 371(c)(1), (2) Date Apr. 19, 2022,
PCT Pub. No. WO2021/117176, PCT Pub. Date Jun. 17, 2021.
Prior Publication US 2022/0376568 A1, Nov. 24, 2022
Int. Cl. H02K 1/27 (2022.01); H02K 1/276 (2022.01); H02K 1/28 (2006.01); H02K 21/16 (2006.01)
CPC H02K 1/276 (2013.01) [H02K 1/28 (2013.01); H02K 21/16 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A rotor comprising:
a plurality of cores including a magnet insertion hole, a first opening communicating with one end of the magnet insertion hole in a circumferential direction, and an indent part communicating with the first opening and indented in the circumferential direction, the plurality of cores being stacked in an axial direction;
a permanent magnet disposed in the magnet insertion hole; and
a nonmagnetic resin provided in the first opening and the indent part, wherein
the indent part is formed between two adjacent cores of the plurality of cores.