US 12,463,486 B2
Stator with coat-removed portions of electrical conductor wires and method of manufacturing same
Norio Kamegawa, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Jul. 26, 2022, as Appl. No. 17/873,527.
Claims priority of application No. 2021-121915 (JP), filed on Jul. 26, 2021.
Prior Publication US 2023/0026208 A1, Jan. 26, 2023
Int. Cl. H02K 3/38 (2006.01); B23K 26/354 (2014.01); H02K 3/28 (2006.01); H02K 3/34 (2006.01); H02K 15/12 (2025.01); H02K 15/33 (2025.01); H02K 3/12 (2006.01); H02K 15/0421 (2025.01); H02K 15/085 (2006.01)
CPC H02K 3/38 (2013.01) [B23K 26/354 (2015.10); H02K 3/28 (2013.01); H02K 3/34 (2013.01); H02K 15/12 (2013.01); H02K 15/33 (2025.01); H02K 3/12 (2013.01); H02K 15/0421 (2013.01); H02K 15/085 (2013.01); H02K 2203/09 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A stator comprising:
an annular stator core; and
a stator coil provided on the stator core,
wherein
the stator coil is formed of a plurality of electrical conductor wires each including an electrical conductor and an insulating coat covering the electrical conductor,
each of the electrical conductor wires has a pair of exposed portions where the electrical conductor is exposed from the insulating coat and a covered portion where the electrical conductor is covered with the insulating coat, the pair of exposed portions being formed respectively at opposite end portions of the electrical conductor wire, the covered portion being formed at portions of the electrical conductor wire other than the end portions,
the stator coil has a coil end part protruding from an axial end face of the stator core, and
at the coil end part, (i) each corresponding pair of the exposed portions of different ones of the electrical conductor wires are welded together and (ii) each of the covered portions of the electrical conductor wires has a coat-removed portion, which is where the insulating coat is locally removed from the covered portion, formed at a position on the electrical conductor wire other than positions at which the exposed portions are formed so that the coat-removed portion is separated from the exposed portions by the insulating coat.