Motor, motor production method, and stator unit
AssigneeNidec Corporation
InventorsYu Asahi, Hidehiro Haga, Shunsuke Murakami
Life of this patent
Estimating the term…
Abstract
A motor includes a rotor having a shaft disposed along a central axis extending in a vertical direction; and a stator opposed to the rotor in a radial direction with a gap therebetween. The stator includes: an annular core back extending in a circumferential direction; a plurality of teeth extending from the core back in the radial direction; a plurality of coils formed of a conductive wire wound around the teeth, the coils forming a plurality of connection systems; and an insulator, at least part of which is positioned between the teeth and the coils. The coils include: a first coil wound around the teeth via the insulator; and a second coil wound around the teeth via the first coil and the insulator.
Claims15
A motor comprising:
- a rotor including a shaft disposed along a central axis extending in a vertical direction;
- and
- a stator opposed to the rotor in a radial direction with a gap therebetween, wherein the stator includes:
- an annular core back extending in a circumferential direction;
- a plurality of teeth extending from the core back in the radial direction;
- a plurality of coils formed of a conductive wire, each of the plurality of coils wound around a respective one of the teeth, the coils forming a plurality of connection systems;
- an insulator, at least part of which is positioned between the teeth and the coils, and
- wherein each of the coils includes:
- a first coil wound around the respective one of the teeth via the insulator;
- and
- a second coil wound around the respective one of the teeth via the first coil and the insulator;
- a winding start line of each of the first coils extending from a first side of the respective one of the teeth in the circumferential direction;
- a winding end line of each of the first coils drawn from a second side of the respective one of the teeth in the circumferential direction, the first side of the teeth being opposite to the second side of the respective one of the teeth;
- and
- a winding start line of each of the second coils drawn from the second side of the respective one of the teeth in the circumferential direction;
- wherein the winding end line of each of the first coils is held by a first connector and the winding start line of each of the second coils is held by a second connector, and
- wherein for each of the coils, the winding end line of the first coil and the winding start line of the second coil face each other.
A stator unit comprising a motor including a rotor with a shaft disposed along a central axis extending in a vertical direction, the stator unit comprising:
- a stator opposed to the rotor in a radial direction with a gap therebetween;
- and
- a plurality of busbars electrically connected to the stator, wherein the stator includes:
- an annular core back extending in a circumferential direction;
- a plurality of teeth extending from the core back in the radial direction;
- a plurality of coils formed of a conductive wire, each of the plurality of coils wound around a respective one of the teeth, the coils forming a plurality of connection systems;
- an insulator, at least part of which is positioned between the teeth and the coils, and
- wherein each of the coils includes:
- a first coil including a coil end connected to the busbar and wound around the respective one of the teeth via the insulator;
- and
- a second coil including a coil end connected to the busbar and wound around the respective one of the teeth via the first coil and the insulator;
- a winding start line of each of the first coils extending from a first side of the respective one of the teeth in the circumferential direction;
- a winding end line of each of the first coils drawn from a second side of the respective one of the teeth in the circumferential direction, the first side of the teeth being opposite to the second side of the respective one of the teeth;
- and
- a winding start line of each of the second coils drawn from the second side of the respective one of the teeth in the circumferential direction;
- wherein the winding end line of each of the first coils is held by a first connector and the winding start line of each of the second coils is held by a second connector, and
- wherein for each of the coils, the winding end line of the first coil and the winding start line of the second coil face each other.
Dependencies are inferred from the claim text.