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US 9,287,744 B2Granted
Winding structure, rotating electric machine, and rotating electric machine manufacturing method
AssigneeNissan Motor Co., Ltd.
InventorTakashi Fukushige
Life of this patent
Estimating the term…
Abstract
A winding structure for a rotating electric machine includes: a core including slots; and a coil including a first winding and a second winding combined by intersecting the first winding and the second winding with each other. Each straight portion of the coil is inserted into any one of two slots arranged at a given interval so that the coil is assembled to the core.
Claims17
A winding structure for a rotating electric machine, comprising:
- a core including a plurality of slots;
- and
- a coil including a first winding and a second winding combined by intersecting the first winding and the second winding with each other, the first winding and the second winding each comprising a pair of straight portions and a pair of coil end portions connecting the pair of straight portions, wherein:
- the pair of straight portions of the first winding and the pair of straight portions of the second winding are inserted into a same pair of slots among the plurality of slots so that the coil is assembled to the core;
- the coil end portions of the first winding and the second winding each comprise:
- a first crank-shape portion bending in a rotation axis direction of the rotating electric machine;
- and
- a second crank-shape portion bending in a radial direction of the rotating electric machine;
- and
- when viewing from the rotation axis direction, the first crank-shape portion of the first winding intersects with the second crank-shape portion of the second winding, and the second crank-shape portion of the first winding intersects with the first crank-shape portion of the second winding.
7 more elements
A manufacturing method for a rotating electric machine, comprising:
- a first step of forming a first winding and a second winding each comprising:
- a first crank-shape portion bending in one direction;
- and
- a second crank-shape portion bending in a direction perpendicular to the one direction;
- a second step of combining the first winding and the second winding by intersecting the first winding and the second winding with each other to produce a coil in a manner that the first crank-shape portion of the first winding is fitted to and intersects with the second crank-shape portion of the second winding, and the second crank-shape portion of the first winding is fitted to and intersects with the first crank-shape portion of the second winding;
- and
- a third step of inserting the coil into a pair of slots of a core to assemble the coil to the core in a manner that the first crank-shape portion and the second crank-shape portion are included in a coil end portion and that both the first winding and the second winding pass through a same pair of slots,
- wherein, after the coil is assembled to the core, the one direction corresponds to a rotation axis direction of the rotating electric machine, and the direction perpendicular to the one direction corresponds to a radial direction of the rotating electric machine.
5 more elements
Dependencies are inferred from the claim text.