A method for producing a single- or multi-layer coil, includes the steps of: providing a flat wire; deforming the flat wire along a deforming direction in order to produce one or more winding sections which are designed to be offset relative to a starting section of the flat wire, wherein the one or more winding sections are designed to form coil layers which run on winding planes arranged in an offset manner relative to the deforming direction; and winding the one or more winding sections on the respective winding plane in order to form one or more coil layers.

A rotating electric machine having a fraction slot configuration in which the number of slots per pole per phase is not an integer includes: a stator that includes a stator core provided with a plurality of slots, and a stator winding having a plurality of coil sides accommodated in the plurality of slots and a plurality of coil ends connecting the same side end parts of the plurality of coil sides to each other; and a movable element that is supported to be movable with respect to the stator, and includes a movable element core, and a plurality of movable element magnetic poles provided in the movable element core. The stator winding includes a plurality of basic coils in which the magnitude of magnetomotive force generated by the plurality of coil sides forming the one-phase band is uniform in each of the plurality of movable element magnetic poles.

Bridge portions forming coil end portions, at both ends in an axial direction, of a stator of the rotating electrical machine according to the present invention are configured coaxially about an axis of the stator; at least one bridge portion of the bridge portions of each coil at both ends in the axial direction is located outward of an inner peripheral surface of the stator; and a gap is present between an end surface of a stator core in the axial direction and each bridge portion.

Each pair of the forming die and the clamping die holding a straight portion of a plane-bent intermediate coil from both sides in the circumferential direction have equal widths in the radial direction of the coil forming device, and the forming dies and the clamping dies holding a plurality of the straight portions disposed from an inner peripheral side of the coil forming device toward an outer peripheral side of the coil forming device are disposed alternately in the circumferential direction with the straight portions interposed therebetween.

A permanent magnet synchronous motor is provided in the present disclosure. The permanent magnet synchronous motor includes a rotor and a stator, wherein the rotor comprises a rotating shaft and a cylindrical magnet surrounding the rotating shaft, the stator comprises a base, a cylindrical core received in the base and surrounding the magnet and coil windings assembled with the core, the coil windings are symmetrical about the center axis of the core, the coil winding comprises a plurality of coils inserted into the core, each coil comprises a body part and extended parts respectively extended from two ends of the body part, a plurality of body parts are superposed and disposed in the core, a plurality of extended parts are respectively extended in the radial direction of the core and fixed on two end faces of the core, and the plurality of extended parts are partially superposed and distributed in a step shape.

A coil for a rotary electric machine includes a plurality of electrically conductive wires defining a group of wires wrapped to define a plurality of turns. The coil further includes a pair of major sections and a compound outer surface along the pair of major sections. The compound outer surface has a first leg section and a second leg section with the first leg section and the second leg section at an angle to each other. A bonding material is positioned along portions of the pair of major sections to define the compound outer surface.

The utility model relates to the technical field of motor structures, and particularly relates to a stator winding, a stator and a motor. The stator winding is formed by winding a flat wire, a part of the flat wire is wound to form at least two coils arranged at intervals, and the coils are consistent in winding direction and located on the same side of the flat wire. By using the solution, the technical effects of integrally forming the stator winding and sharing a flat wire by the coils located on the stator winding are achieved. Compared with the technical solution in the prior art that single coils are connected to form a stator winding, the technical solution in the utility model of integral forming has the following advantages: firstly, the connection difficulty in the prior art is avoided, and the production efficiency of the stator winding is greatly improved; secondly, unnecessary connecting points on the stator winding are avoided, and the quality of the stator winding is improved; and thirdly, the production process of the stator winding is reduced, and the production cost and the labor intensity are lowered.

The utility model relates to the technical field of motor structures, and particularly relates to a stator winding, a stator and a motor. The stator winding is formed by winding a flat wire, a part of the flat wire is wound to form at least two coils arranged at intervals, and the coils are consistent in winding direction and located on the same side of the flat wire. By using the solution, the technical effects of integrally forming the stator winding and sharing a flat wire by the coils located on the stator winding are achieved. Compared with the technical solution in the prior art that single coils are connected to form a stator winding, the technical solution in the utility model of integral forming has the following advantages: firstly, the connection difficulty in the prior art is avoided, and the production efficiency of the stator winding is greatly improved; secondly, unnecessary connecting points on the stator winding are avoided, and the quality of the stator winding is improved; and thirdly, the production process of the stator winding is reduced, and the production cost and the labor intensity are lowered.

A stator assembly method by which coils are mounted on an annular stator core, each of the coils including a plurality of in-slot portions formed of a conductor and a coil end portion formed of the conductor, the stator core including slots that are formed between adjacent teeth extending radially inward from a back yoke and that accommodate the in-slot portions.

A coil end shaping apparatus shapes three flatwise bent portions f1 to f3 in a lead wire portion extending from one end of a coil by bringing first and second shaping dies close to each other such that one of the flatwise bent portions is bent in the direction that is opposite to the direction in which the rest are bent. The second shaping die, which is a movable die, has an clearance portion that prevents a portion of the lead wire portion to be bent along the flatwise direction on the side closest to the free end from being restrained by not contacting the lead wire portion while the flatwise bent portions on the base end side with respect to the flatwise bent portion on the side closest to the free end, of the three flatwise bent portions, are shaped in the lead wire portion.