US 11,984,770 B2
Rotor, motor, fan, air conditioning apparatus, and method for manufacturing rotor
Hiroki Aso, Tokyo (JP); Takaya Shimokawa, Tokyo (JP); Junichiro Oya, Tokyo (JP); and Naoki Tamura, Tokyo (JP)
Assigned to Mitsubishi Electric Corporation, Tokyo (JP)
Appl. No. 17/254,265
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Aug. 2, 2018, PCT No. PCT/JP2018/029008
§ 371(c)(1), (2) Date Dec. 19, 2020,
PCT Pub. No. WO2020/026406, PCT Pub. Date Feb. 6, 2020.
Prior Publication US 2021/0273528 A1, Sep. 2, 2021
Int. Cl. H02K 7/08 (2006.01); F24F 1/20 (2011.01); H02K 1/2733 (2022.01); H02K 11/215 (2016.01); H02K 15/03 (2006.01); H02K 21/14 (2006.01)
CPC H02K 11/215 (2016.01) [F24F 1/20 (2013.01); H02K 1/2733 (2013.01); H02K 7/083 (2013.01); H02K 15/03 (2013.01); H02K 21/14 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A rotor, comprising:
a resin magnet including a first magnetic flux generating part having a polar anisotropic orientation and a second magnetic flux generating part having a radial orientation or an axial orientation; and
a shaft fixed to the resin magnet,
wherein a peak of magnetic flux density from the first magnetic flux generating part is larger than a peak of magnetic flux density from the second magnetic flux generating part,
wherein the first magnetic flux generating part includes:
a facing region that faces a stator core of a motor in a radial direction while the resin magnet is disposed inside the stator core, and
a non-facing region that does not face the stator core of the motor in the radial direction while the resin magnet is disposed inside the stator core,
wherein the non-facing region includes:
a first region located on a side opposite to the second magnetic flux generating part in an axial direction, and
a second region located between the second magnetic flux generating part and the facing region in the axial direction, and
wherein a peak of magnetic flux density from the first region is larger than a peak of magnetic flux density from the second magnetic flux generating part.