US 12,244,175 B2
Motor
Naohiro Kido, Osaka (JP); Yoshinari Asano, Osaka (JP); Tsukasa Asari, Osaka (JP); and Hiroshi Hibino, Osaka (JP)
Assigned to DAIKIN INDUSTRIES, LTD., Osaka (JP)
Appl. No. 17/923,905
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP)
PCT Filed Apr. 26, 2021, PCT No. PCT/JP2021/016594
§ 371(c)(1), (2) Date Nov. 7, 2022,
PCT Pub. No. WO2021/230058, PCT Pub. Date Nov. 18, 2021.
Claims priority of application No. 2020-083256 (JP), filed on May 11, 2020.
Prior Publication US 2023/0179032 A1, Jun. 8, 2023
Int. Cl. H02K 1/14 (2006.01); H02K 3/52 (2006.01); H02K 21/22 (2006.01)
CPC H02K 1/145 (2013.01) [H02K 3/525 (2013.01); H02K 21/227 (2013.01); H02K 2203/12 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A motor comprising:
a stator including coil units stacked in an axial direction with a nonmagnetic body arranged therebetween; and
a rotor configured to be rotatable about a rotation axis,
each of the coil units including
a coil, and
a stator core,
the coil including an annular winding wound about the rotation axis, and the stator core being arranged to surround at least part of the winding of the coil,
the stator core including projections formed on each of two axial ends of the stator core, alternately arranged in a circumferential direction, and projecting radially toward the rotor from the two axial ends of the stator core,
the coil including s the winding and two leads extending from the winding,
at least one of a first lead of the two leads and a second lead of the two leads is arranged to extend between stator cores of two of the coil units, and
a magnet pole being arranged in one of an inner circumferential portion and an outer circumferential portion of the stator core, and the first lead and the second lead being arranged in an other one of the inner circumferential portion and the outer circumferential portion,
a spacer including the nonmagnetic body being arranged between the coil units,
the spacer including a lead guide, and
at least one of the first lead and the second lead being arranged to extend in the lead guide of the spacer.