US 12,489,330 B2
Coil winding portion structure for stator
Kan Oyamada, Takizawa (JP); and Jun Takahashi, Takizawa (JP)
Assigned to MIKUNI CORPORATION, Tokyo (JP)
Filed by MIKUNI CORPORATION, Tokyo (JP)
Filed on May 5, 2023, as Appl. No. 18/143,858.
Claims priority of application No. 2022-078789 (JP), filed on May 12, 2022.
Prior Publication US 2023/0369931 A1, Nov. 16, 2023
Int. Cl. H02K 3/28 (2006.01); H02K 3/34 (2006.01); H02K 5/22 (2006.01)
CPC H02K 3/28 (2013.01) [H02K 3/34 (2013.01); H02K 5/225 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A coil winding portion structure for a stator in an electric motor that includes the stator including coils with windings wound therein, a rotor rotatably disposed inside the stator, and an insulator attached to the stator for insulating the coils,
wherein the insulator includes
a coil wound portion around which the windings are wound, and
a tubular portion provided outside the coil wound portion in a radial direction, connection terminals to which the windings are connected being mounted on the tubular portion,
the tubular portion includes, between the coils and the connection terminals, a load receiving portion receiving a load of the windings when the windings are wound in the coils,
the load receiving portion includes
base portions that extend along a part of the tubular portion in a circumferential direction, project axially outward from the tubular portion and have upper surfaces being perpendicular to an axial line of the tubular portion, the upper surfaces holding the windings mounted thereon, and
guide portions that protrude axially from the base portions and are in the form of columnar shapes, bending and guiding the windings while supporting the tension of the windings,
the base portions and the guide portions are configured integrally with the tubular portion,
the connection terminals, the base portions, and the guide portions are disposed at an end of the tubular portion in an axial direction in an aligned manner in the circumferential direction.