The present invention relates to a rotor (1) of a rotary electric machine, comprising: a body (3) comprising a cylindrical central core (5) and a circumferential plurality of arms (B1 . . . B18) extending radially out from the cylindrical central core (5), the body (3) being intended to be mounted with the ability to move about an axis of rotation X, a coilset produced by windings of turns and forming at least one series of coils (C1 . . . C9, C1 . . . C9), a coil (C1 . . . C9, C1 . . . C9) comprising a predetermined number of turns around at least two arms (B1 . . . B18) of the body (3), two adjacent coils (C1 . . . C9, C1 . . . C9) of a series being angularly offset from one another with a partial overlap,

in which the last coil (C9, C9), situated radially furthest towards the outside, comprises a predetermined number of turns that is lower than the predetermined number of turns of the other coils of the series (C1 . . . C8, C1 . . . C8).

The present invention relates to a rotor (1) of a rotary electric machine, comprising: a body (3) comprising a cylindrical central core (5) and a circumferential plurality of arms (B1 . . . B18) extending radially out from the cylindrical central core (5), the body (3) being intended to be mounted with the ability to move about an axis of rotation X, a coilset produced by windings of turns and forming at least one series of coils (C1 . . . C9, C1 . . . C9, C1 . . . C9, C1 . . . C9), a coil (C1 . . . C9, C1 . . . C9, C1 . . . C9, C1 . . . C9) comprising a predetermined number of turns around at least two arms (B1 . . . B18) of the body, two adjacent coils (C1 . . . C9, C1 . . . C9, C1 . . . C9, C1 . . . C9) of a series being angularly offset from one another with a partial overlap,
in which the rotor (1) comprises at least one additional retaining loop (S1, S1, S2, S2) wound around at least two arms (B1 . . . B18) of which at least one is common to the arms (B1 . . . B18) around which is wound the last coil (C9, C9, C9, C9), situated radially outermost, of at least one series and of which at least one is distinct from the arms around which the said last coil (C9, C9, C9, C9) is wound, so that the at least one additional retaining loop (S1, S1, S2, S2) partially overlaps the turns of the said last coil (C9, C9, C9, C9).

The present invention relates to a rotor (1) of a rotary electric machine, comprising: a body (3) comprising a cylindrical central core (5) and a circumferential plurality of arms (B1 . . . B18) extending radially out from the cylindrical central core (5), the body (3) being intended to be mounted with the ability to move about an axis of rotation X, a coilset produced by windings of turns and forming at least one series of coils (C1 . . . C9, C1 . . . C9, C1 . . . C9, C1 . . . C9), a coil (C1 . . . C9, C1 . . . C9, C1 . . . C9, C1 . . . C9) comprising a predetermined number of turns around at least two arms (B1 . . . B18) of the body, two adjacent coils (C1 . . . C9, C1 . . . C9, C1 . . . C9, C1 . . . C9) of a series being angularly offset from one another with a partial overlap,
in which the rotor (1) comprises at least one additional retaining loop (S1, S1, S2, S2) wound around at least two arms (B1 . . . B18) of which at least one is common to the arms (B1 . . . B18) around which is wound the last coil (C9, C9, C9, C9), situated radially outermost, of at least one series and of which at least one is distinct from the arms around which the said last coil (C9, C9, C9, C9) is wound, so that the at least one additional retaining loop (S1, S1, S2, S2) partially overlaps the turns of the said last coil (C9, C9, C9, C9).

An embodiment relates to a stator and a motor comprising same, the stator comprising: a stator core comprising a yoke and multiple teeth protruding from the inner surface of the yoke; an insulator surrounding a part of the stator core; a coil wound around the insulator; and a molding portion disposed to cover the stator core, the insulator, and the coil. The insulator comprises a first insulator and a second insulator. The first insulator comprises: a body portion around which the coil is wound; and inner guide extending from the inside of the body portion in the perpendicular direction; a first outer guide extending from the outside of the body portion in the perpendicular direction; a second outer guide disposed to be spaced apart from the first outer guide in the outward direction; and a protrusion protruding from the second outer guide in the inward direction. The protrusion has an end portion disposed such that a predetermined gap (G) is formed between same and the first outer guide. The coil has a part disposed between the first outer guide and the second outer guide through the gap (G). Accordingly, it is possible to inhibit the coil from contacting the housing due to injection molding pressure during over-molding of the stator.

An embodiment relates to a stator and a motor comprising same, the stator comprising: a stator core comprising a yoke and multiple teeth protruding from the inner surface of the yoke; an insulator surrounding a part of the stator core; a coil wound around the insulator; and a molding portion disposed to cover the stator core, the insulator, and the coil. The insulator comprises a first insulator and a second insulator. The first insulator comprises: a body portion around which the coil is wound; and inner guide extending from the inside of the body portion in the perpendicular direction; a first outer guide extending from the outside of the body portion in the perpendicular direction; a second outer guide disposed to be spaced apart from the first outer guide in the outward direction; and a protrusion protruding from the second outer guide in the inward direction. The protrusion has an end portion disposed such that a predetermined gap (G) is formed between same and the first outer guide. The coil has a part disposed between the first outer guide and the second outer guide through the gap (G). Accordingly, it is possible to inhibit the coil from contacting the housing due to injection molding pressure during over-molding of the stator.

An embodiment of the present disclosure may further provide an armature comprising: an iron core; a plurality of patch cords, each of the plurality of patch cords being disposed in a notch on the iron core independently; and at least one end module, wherein: each of the at least one end module includes a plurality of circuits; and the at least one end module is mounted to an end portion of the iron core along an axial direction such that the plurality of patch cords electrically connect to each other individually through a corresponding circuit of the plurality of circuit to form a winding. The present disclosure also provides at least one end module for an armature and a method for assembling an armature.

An embodiment of the present disclosure may further provide an armature comprising: an iron core; a plurality of patch cords, each of the plurality of patch cords being disposed in a notch on the iron core independently; and at least one end module, wherein: each of the at least one end module includes a plurality of circuits; and the at least one end module is mounted to an end portion of the iron core along an axial direction such that the plurality of patch cords electrically connect to each other individually through a corresponding circuit of the plurality of circuit to form a winding. The present disclosure also provides at least one end module for an armature and a method for assembling an armature.

A process and a system for welding rotor coils are presented. A plurality of rotor coils are arranged on a table of a machine. A welding tool welds the rotor coils on one end using a Friction Stir Welding process. Transition pieces are each arranged between the rotor coils to create a continuous welding path. A run-off tab is placed at an end of the welding path. The welding tool is changed to a milling tool after completion of the welding. The milling tool traces back along the welding path to separate the rotor coils. The milling tool may be changed to the welding tool to repeat the process for another end of the rotor coils. The process is completely automatic and controlled by a control unit.

A process and a system for welding rotor coils are presented. A plurality of rotor coils are arranged on a table of a machine. A welding tool welds the rotor coils on one end using a Friction Stir Welding process. Transition pieces are each arranged between the rotor coils to create a continuous welding path. A run-off tab is placed at an end of the welding path. The welding tool is changed to a milling tool after completion of the welding. The milling tool traces back along the welding path to separate the rotor coils. The milling tool may be changed to the welding tool to repeat the process for another end of the rotor coils. The process is completely automatic and controlled by a control unit.

A winding device including radially disposed nozzles of a same number as the number of teeth, a plurality of the nozzles simultaneously drawing out a wire to corresponding slots between respective teeth to simultaneously wind the wire between predetermined two slots that correspond to a respective one of the nozzles, includes a wire drawing and cutting mechanism configured to draw out the wire from a single spool and cut the drawn-out wire at a predetermined length, a wire storing mechanism configured to dispose the wire of the predetermined length obtained by the wire drawing and cutting mechanism in a radial manner and store the wire to a same number as that of the plurality of nozzles, and a wire conveyance mechanism configured to convey the radially disposed plurality of wires from the wire storing mechanism, to the plurality of nozzles.