A stator includes a plurality of core constituent members arranged side by side in a circumferential direction, each of which has a tooth extending in a radial direction and a pair of core outer extension portion extending in the both circumferential directions from a radial outer end portion of the tooth, and an insulator covering at least a part of the tooth, and a coil wound around the tooth via the insulator. The coil includes a terminal inner coil having a terminal line which is drawn from the radially inner side to the one axial side. The insulator covers the tooth that are circumferentially adjacent to the tooth around which the terminal inner coil is wound. The insulator has a restriction portion so as to restrict the movement of the terminal line of the terminal inner coil.

A stator includes a plurality of core constituent members arranged side by side in a circumferential direction, each of which has a tooth extending in a radial direction and a pair of core outer extension portion extending in the both circumferential directions from a radial outer end portion of the tooth, and an insulator covering at least a part of the tooth, and a coil wound around the tooth via the insulator. The coil includes a terminal inner coil having a terminal line which is drawn from the radially inner side to the one axial side. The insulator covers the tooth that are circumferentially adjacent to the tooth around which the terminal inner coil is wound. The insulator has a restriction portion so as to restrict the movement of the terminal line of the terminal inner coil.

The present invention relates to an injection molding stepping motor, including an injection molding stator assembly and a rotor assembly, wherein the injection molding stator assembly includes a stator iron core, a front framework, a rear framework, a stator winding, a front lining ring, a rear lining ring and a mounting bracket, the stator winding is wound in a groove of the stator iron core into which the front framework and the rear framework are inserted, the front lining ring and the rear lining ring are mounted on two sides of the stator iron core, the stator iron core is fixed on the mounting bracket, and the front lining ring and the rear lining ring each adopts a structure which is formed by punching and laminating thin plates with different inner diameters. Compared with the prior art, the present invention has the advantages of reducing axial magnetic flux leakage of a motor and improving the moment of the motor.

The present invention relates to an injection molding stepping motor, including an injection molding stator assembly and a rotor assembly, wherein the injection molding stator assembly includes a stator iron core, a front framework, a rear framework, a stator winding, a front lining ring, a rear lining ring and a mounting bracket, the stator winding is wound in a groove of the stator iron core into which the front framework and the rear framework are inserted, the front lining ring and the rear lining ring are mounted on two sides of the stator iron core, the stator iron core is fixed on the mounting bracket, and the front lining ring and the rear lining ring each adopts a structure which is formed by punching and laminating thin plates with different inner diameters. Compared with the prior art, the present invention has the advantages of reducing axial magnetic flux leakage of a motor and improving the moment of the motor.

A wound rotor, such as a wound rotor for an electric machine, includes a shaft having a main axis. The shaft includes a manifold. The wound rotor also includes a winding wire and n poles wound and ordered with an ascending order number obtained by rotation about the main axis. The n wound poles can be distributed radially about the main axis. The n poles are wound with the wire in series in turn according to their ascending order numbers, the last pole, however, not being wound last.

A wound rotor, such as a wound rotor for an electric machine, includes a shaft having a main axis. The shaft includes a manifold. The wound rotor also includes a winding wire and n poles wound and ordered with an ascending order number obtained by rotation about the main axis. The n wound poles can be distributed radially about the main axis. The n poles are wound with the wire in series in turn according to their ascending order numbers, the last pole, however, not being wound last.

Metal laminate cores can be assembled with laser pin welding through a thickness of a first laminate into a second laminate and successively laser pin welding a plurality of second laminates, ending with a third laminate to form the core stack. The laser pin welds are located within an outer perimeter of one or more of the laminates. Such laminated cores are often utilized in electrical motors, generators, transformers, lighting and other applications. The laser pin welds can be selectively provided under the control of a processor to index about the parts and/or change in intensity or even skip certain parts so as to be able to begin and end cores for some embodiments while also facilitating manual and/or automated stacking/welding embodiments and/or relative rotation of the cores.

Metal laminate cores can be assembled with laser pin welding through a thickness of a first laminate into a second laminate and successively laser pin welding a plurality of second laminates, ending with a third laminate to form the core stack. The laser pin welds are located within an outer perimeter of one or more of the laminates. Such laminated cores are often utilized in electrical motors, generators, transformers, lighting and other applications. The laser pin welds can be selectively provided under the control of a processor to index about the parts and/or change in intensity or even skip certain parts so as to be able to begin and end cores for some embodiments while also facilitating manual and/or automated stacking/welding embodiments and/or relative rotation of the cores.

Provided are a winding device and a motor A nozzle that feeds out a coil has: a nozzle hole from which the coil is fed out; an inner-diameter round chamfered part formed on an opening edge of a tip of the nozzle; an outer-diameter round chamfered part formed on the outer peripheral edge of the tip of the nozzle. When the wire diameter of the coil is defined as Φc, the inner diameter of the nozzle hole is defined as Φin, the radius of curvature of the inner-diameter round chamfered part is defined as Rin, and the radius of curvature of the outer-diameter round chamfered part is defined as Rout, they satisfy 1.2Φc≤Φin≤1.4Φc, 0.5Φc≤Rin≤Φc, and 0.25Φc≤Rout≤0.5Φc.

Provided are a winding device and a motor A nozzle that feeds out a coil has: a nozzle hole from which the coil is fed out; an inner-diameter round chamfered part formed on an opening edge of a tip of the nozzle; an outer-diameter round chamfered part formed on the outer peripheral edge of the tip of the nozzle. When the wire diameter of the coil is defined as Φc, the inner diameter of the nozzle hole is defined as Φin, the radius of curvature of the inner-diameter round chamfered part is defined as Rin, and the radius of curvature of the outer-diameter round chamfered part is defined as Rout, they satisfy 1.2Φc≤Φin≤1.4Φc, 0.5Φc≤Rin≤Φc, and 0.25Φc≤Rout≤0.5Φc.