US 11,735,977 B2
Motor and manufacturing method of motor
Yasushi Fukui, Nagano (JP)
Assigned to MINEBEA MITSUMI Inc., Nagano (JP)
Appl. No. 17/58,212
Filed by MINEBEA MITSUMI Inc., Nagano (JP)
PCT Filed May 13, 2019, PCT No. PCT/JP2019/018857
§ 371(c)(1), (2) Date Nov. 24, 2020,
PCT Pub. No. WO2019/230348, PCT Pub. Date Dec. 5, 2019.
Claims priority of application No. 2018-103907 (JP), filed on May 30, 2018.
Prior Publication US 2021/0194315 A1, Jun. 24, 2021
Int. Cl. H02K 7/00 (2006.01)
CPC H02K 7/003 (2013.01) 8 Claims
OG exemplary drawing
 
1. A motor comprising:
a shaft made of metal, and
a base including a coating layer and a metallic member covered with the coating layer,
wherein an outer peripheral part of the shaft includes a cylindrical face and a recessed face extending in a peripheral direction,
wherein the coating layer has an opening,
the metallic member includes an exposed part exposed through the opening,
the recessed face of the shaft and the exposed part are fused or welded together,
the recessed face is arranged in a base side with respect to the cylindrical face in a longitudinal direction of the shaft,
a welded part between the recessed face and the exposed part is arranged inside the exposed part,
the welded part is arranged in the recessed face side with respect to a face of the base in the cylindrical face side in the longitudinal direction of the shaft,
the cylindrical face and the face of the base in the cylindrical face side are reference surfaces.