US 12,451,773 B2
Motor manufacturing method and motor manufacturing system
Young Kyu An, Gyeonggi-do (KR)
Assigned to HL MANDO CORPORATION, Gyeonggi-do (KR)
Appl. No. 17/626,813
Filed by HL MANDO CORPORATION, Gyeonggi-do (KR)
PCT Filed Jun. 23, 2020, PCT No. PCT/KR2020/008171
§ 371(c)(1), (2) Date Jan. 12, 2022,
PCT Pub. No. WO2021/015427, PCT Pub. Date Jan. 28, 2021.
Claims priority of application No. 10-2019-0087429 (KR), filed on Jul. 19, 2019.
Prior Publication US 2022/0360148 A1, Nov. 10, 2022
Int. Cl. H02K 13/00 (2006.01); H01R 39/04 (2006.01); H02K 13/10 (2006.01); H02K 15/00 (2025.01)
CPC H02K 13/006 (2013.01) [H01R 39/04 (2013.01); H02K 13/10 (2013.01); H02K 15/00 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A motor manufacturing method comprising:
assembling a shaft, an armature fixed to the shaft and rotatably disposed, a commutator fixed to the shaft and rotating together with the armature, and a brush in contact with a portion of a surface of the commutator;
in a state that a magnetized magnet is not connected, aging a contact surface of the brush and the commutator by applying a voltage to the brush and rotating the armature and the commutator together through rotation of the shaft; and
connecting a case including the magnetized magnet magnetized in a magnetizing device to the assembled shaft, armature, commutator and brush,
wherein rotating the armature and the commutator together through rotation of the shaft comprises rotating the shaft in a first direction during a first time period and rotating in a second direction opposite to the first direction during a second time period, and
wherein the first time period and the second time period are set to different time ranges.