Rotating electrical machine and method for manufacturing rotating electrical machine
AssigneeKabushiki Kaisha Yaskawa Denki
InventorTsuyoshi NONAKA
Life of this patent
Estimating the term…
Abstract
A rotating electrical machine includes a rotor and a stator positioned circumferentially around the rotor. The stator includes multiple core elements arrayed in a circumferential direction of the rotor such that the core elements form multiple slots arrayed in the circumferential direction, and a unitary cylindrical coil resin structure including molded resin and lap wound air-core coils resin-molded in the molded resin, each of the air-core coils having an air-core, a first side portion and a second side portion extending on the opposite sides of the air-core such that the first side portion extends through a first one of the slots and the second side portion extends through a second one of the slots.
Claims20
A rotating electrical machine, comprising:
- a rotor;
- and
- a stator positioned circumferentially around the rotor and comprising
- a plurality of core elements arrayed in a circumferential direction of the rotor such that the plurality of core elements forms a plurality of slots arrayed in the circumferential direction, and
- a unitary cylindrical coil resin structure comprising molded resin and a plurality of lap wound air-core coils resin-molded in the molded resin, each of the air-core coils having an air-core, a first side portion and a second side portion extending on opposite sides of the air-core such that the first side portion extends through a first one of the plurality of slots and the second side portion extends through a second one of the plurality of slots.
A unitary cylindrical coil resin structure for a rotating electrical machine, comprising:
- molded resin;
- and
- a plurality of lap wound air-core coils resin-molded in the molded resin, each of the air-core coils having an air-core, a first side portion and a second side portion extending on opposite sides of the air-core,
- wherein when assembled with a plurality of core elements of a stator of the rotating electrical machine, the plurality of core elements are arrayed in a circumferential direction of a rotor such that the plurality of core elements forms a plurality of slots arrayed in the circumferential direction, the first side portion of each of the air-core coils extends through a first one of the plurality of slots, and the second side portion of each of the air-core coils extends through a second one of the plurality of slots.
A method for manufacturing a rotating electrical machine, comprising:
- lap-winding a plurality of air-core coils such that a plurality of lap wound air-core coils forms a substantially cylindrical reel shape;
- resin-molding the plurality of lap wound air-core coils such that a unitary cylindrical coil resin structure comprising molded resin and the plurality of lap wound air-core coils resin-molded in the molded resin is formed;
- and
- assembling a plurality of core elements of a stator to the unitary cylindrical coil resin structure such that the plurality of core elements is arrayed in a circumferential direction of a rotor and forms a plurality of slots arrayed in the circumferential direction, each of the air-core coils having an air-core, a first side portion and a second side portion extending on opposite sides of the air-core such that the first side portion extends through a first one of the plurality of slots and the second side portion extends through a second one of the plurality of slots.
Dependencies are inferred from the claim text.