US 12,323,002 B2
Motor-driven compressor and method for manufacturing motor-driven compressor
Shuji Takimoto, Kariya (JP); Taku Adaniya, Kariya (JP); and Kensuke Ikai, Kariya (JP)
Assigned to KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Kariya (JP)
Filed by KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Kariya (JP)
Filed on Oct. 4, 2022, as Appl. No. 17/959,733.
Claims priority of application No. 2021-165056 (JP), filed on Oct. 6, 2021; and application No. 2022-036087 (JP), filed on Mar. 9, 2022.
Prior Publication US 2023/0107796 A1, Apr. 6, 2023
Int. Cl. H02K 1/16 (2006.01); F04D 13/06 (2006.01); H02K 3/12 (2006.01); H02K 5/04 (2006.01); H02K 15/02 (2025.01); H02K 15/021 (2025.01)
CPC H02K 1/16 (2013.01) [F04D 13/0693 (2013.01); H02K 3/12 (2013.01); H02K 5/04 (2013.01); H02K 15/021 (2025.01)] 5 Claims
OG exemplary drawing
 
1. A motor-driven compressor, comprising:
a compression portion configured to compress fluid;
an electric motor configured to drive the compression portion; and
a tubular housing that accommodates the electric motor, wherein
the electric motor includes a stator,
the stator includes:
an annular stator core including a cylindrical yoke that engages with an inner circumferential surface of the housing and teeth that extend in a radial direction from an inner circumferential surface of the yoke;
an annular insulator including a tubular insulator base that is in contact with an end face of the yoke; and
U-, V-, and W-phase windings, each being wound around corresponding ones of the teeth in a concentrated manner so as to form coils,
the winding of each of the phases forms connection wires that are locked on an outer circumferential surface of the insulator base, each of the connection wires connecting adjacent ones of the coils of a corresponding one of the phases,
the outer circumferential surface of the insulator base includes:
a locking surface including accommodation grooves, each accommodating a corresponding one of the connection wires; and
a non-locking surface that does not include the accommodation grooves or lock the connection wires,
the stator core includes an engagement recess that engages with part of a jig, the engagement recess being located in a region outward from the insulator base in the radial direction on the end face of the yoke, and
the engagement recess is located outward from the non-locking surface in the radial direction on the end face of the yoke.