US 12,395,028 B2
Armature and electric motor
Satohiro Hirano, Tokyo (JP); Yosuke Takaishi, Tokyo (JP); Shunta Kashima, Tokyo (JP); and Zaini Ariff, Tokyo (JP)
Assigned to MITSUBISHI ELECTRIC CORPORATION, Tokyo (JP)
Appl. No. 18/879,814
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Dec. 14, 2022, PCT No. PCT/JP2022/045983
§ 371(c)(1), (2) Date Dec. 30, 2024,
PCT Pub. No. WO2024/127543, PCT Pub. Date Jun. 20, 2024.
Prior Publication US 2025/0175049 A1, May 29, 2025
Int. Cl. H02K 3/28 (2006.01); H02K 3/18 (2006.01); H02K 3/52 (2006.01); H02K 41/03 (2006.01)
CPC H02K 3/28 (2013.01) [H02K 3/18 (2013.01); H02K 3/522 (2013.01); H02K 41/031 (2013.01); H02K 2203/12 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An armature that is arranged to face a field system via an air gap and is driven by three-phase AC excitation, the armature comprising:
a plurality of teeth including an iron core, an insulating holding member attached to the iron core, and a winding portion in which an electric wire having an insulating cover is wound around the iron core on the insulating holding member and a plurality of coils are formed, wherein
the plurality of teeth includes a first tooth including the winding portion for only a one-phase coil in the plurality of coils and a second tooth including the winding portions for coils of two different phases from each other in the plurality of coils, and
in the second tooth, the winding portions of the two different phases from each other include a single electric wire and are continuously wound via an intermediate fixing member provided on the insulating holding member.