Coil for rotary electric machine and insertion method
AssigneeHonda Motor Co., Ltd.
InventorKeiichiro Oka
Life of this patent
Estimating the term…
Abstract
A coil (1) for a rotary electric machine is annularly formed by twelve coil members (10), each coil member (10) is configured of four coil elements (10A) to (10D), the coil elements (10A) to (10D) integrally include a plurality of sets of coil element structures each set of coil element structures including a pair of base portions (11), and four arm portions (12) and two curl portions (13), and the plurality of sets of coil element structures are annularly configured.
Claims6
A coil for a rotary electric machine, annularly formed by a plurality of coil members, and inserted into a slot of an annular stator of the rotary electric machine,
- wherein each of the plurality of coil members is configured of a plurality of coil elements,
- the plurality of coil elements integrally comprises a plurality of sets of coil element structures, each set of coil element structures including a first base portion and a second base portion inserted into the slot, extending in an axial direction of the coil and spaced in a circumferential direction of the coil, a first connecting portion connecting between one end portion of the first base portion and one end portion of the second base portion, and a second connecting portion extending from the other end portion of the second base portion,
- the plurality of sets of coil element structures is annularly configured by connecting the other end portion of the first base portion of one of each of the two sets of adjacent coil element structures in the plurality of sets of coil element structures, to the other end portion of the first base portion of the other coil element structure via the second connecting portion,
- the plurality of coil elements are arranged to overlap each other in a radial direction of the coil in each of the first base portion and the second base portion, and each of at least one of the plurality of coil elements is configured of a plurality of conducting wires, and
- the plurality of conducting wires are arranged to be aligned along the circumferential direction of the coil in each of the first base portion and the second base portion.
A method of inserting a coil for a rotary electric machine in which a coil annularly formed by a plurality of coil members is inserted into a slot of an annular stator of the rotary electric machine, comprising:
- configuring each of the plurality of coil members by a plurality of coil elements;
- configuring the plurality of coil elements to integrally comprise a plurality of sets of coil element structures, each set of coil element structures including a first base portion and a second base portion extending in an axial direction of the coil and spaced in a circumferential direction of the coil, a first connecting portion connecting between one end portion of the first base portion and one end portion of the second base portion, and a second connecting portion extending from the other end portion of the second base portion;
- annularly configuring the plurality of sets of coil element structures by connecting the other end portion of the first base portion of one of each of the two sets of adjacent coil element structures in the plurality of sets of coil element structures, to the other end portion of the first base portion of the other coil element structure via the second connecting portion;
- arranging the plurality of coil elements to overlap each other in a radial direction of the coil in each of the first base portion and the second base portion, and configuring each of at least one of the plurality of coil elements by a plurality of conducting wires;
- arranging the plurality of conducting wires to be aligned along the circumferential direction of the coil in each of the first base portion and the second base portion;
- and
- inserting the first base portion and the second base portion in the plurality of sets of coil element structures into the slot.
Dependencies are inferred from the claim text.