Stator, rotating electric machine, method of manufacturing stator, and method of manufacturing rotating electric machine

Abstract

To provide a high-quality rotating electric machine capable of reducing the size but increasing the output by increasing the winding volume at a low cost.SOLUTION: Defining m as a natural number greater than or equal to 2, and n as a natural number, in multiple split cores having multiple teeth, wires are delta-connected in an m-series n-parallel system or defining k as an even number and n as a natural number, the wires are delta-connected in a k-series and n-parallel system, and the wires are wound on the multiple teeth in a concentrated winding method. U-phase coil, V-phase coil, and W-phase coil are repeatedly arranged in order on one side in the circumferential direction of the core. In heterogeneous phase coils, each of multiple power input wires connects the end of one coil and the start end of the other coil. In homogeneous phase coils, each of the multiple crossovers connects one end of the coil and one side of the core in the circumferential direction or the start end of the other coil located on the other side of the core in the circumferential direction. Either or some of the multiple power input wires connect the ends of the windings.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a stator, a rotating electric machine, a method for manufacturing a stator, and a method for manufacturing a rotating electric machine. [Background technology]

[0002] Generally, one way to achieve a smaller, higher-output rotating electric machine, i.e., a brushless motor, is to increase the space occupied by the windings. Conventionally, the following techniques have been known to achieve a larger space occupied by the windings (see, for example, Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4444639 [Patent Document 2] Patent No. 4490248 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when winding the core around the multiple teeth, the jumper wires between the coil sections and the terminal wires connected to the circuit board become complicatedly entangled when shaping the core, which can cause the coil sections to collapse or slacken, or the jumper wires or terminal wires to get caught and damage the insulation coating of the windings. To prevent this, complex dedicated auxiliary tools and equipment are required, but this increases manufacturing costs.

[0005] In addition, after the core is formed into a ring, the process of shaping the terminal wires of the windings and connecting the terminal wires to the circuit board is difficult to automate because the jumper wires between the coil parts and the terminal wires connected to the circuit board tend to get complicatedly entangled. For this reason, a structure has been considered in which the continuous winding of the windings is abandoned and the terminal wires are connected to the circuit board using a bus bar consisting of multiple terminals, simplifying the shaping of the terminal wires. However, in this case, the bus bar structure becomes complicated and the number of parts increases, raising manufacturing costs.

[0006] The present invention has been made in consideration of the above problems, and has an object to provide a rotating electric machine that can be made small and has high output by increasing the space occupied by the windings, at low cost and with high quality. [Means for solving the problem]

[0007] In order to achieve the above object, a stator according to claims 1 to 23 of the present invention comprises a core having a plurality of split cores each formed with a plurality of teeth portions, and a winding having a plurality of coil portions wound around the plurality of teeth portions in a concentrated winding manner, the coil portions being delta-connected in an m-series / n-parallel manner where m is a natural number of 2 or more and n is a natural number, or delta-connected in a k-series / n-parallel manner where k is an even number of 2 or more and n is a natural number, the plurality of coil portions being arranged such that a U-phase coil portion forming a U-phase, a V-phase coil portion forming a V-phase, and a W-phase coil portion forming a W-phase are repeatedly arranged in order on one circumferential side of the core, and the winding has a plurality of power inputs and a plurality of jumper wires, each of the plurality of power input lines connecting an end of one of the coil sections of a different phase to a starting end of the other of the coil sections, and each of the plurality of jumper wires includes a first direction jumper wire connecting an end of one of the coil sections of the same phase to a starting end of the other coil section located on one circumferential side of the core relative to the one coil section, and a second direction jumper wire connecting an end of one of the coil sections of the same phase to a starting end of the other coil section located on the other circumferential side of the core relative to the one coil section, and any or some of the plurality of power input lines have a connection portion connecting ends of the windings together.

[0008] In order to achieve the above object, a rotating electric machine according to a twenty-fourth aspect of the present invention includes the stator and a plurality of connection terminals to which two or more of the plurality of power input lines are each connected.

[0009] In order to achieve the above object, a rotating electric machine according to a twenty-fifth aspect of the present invention includes the stator and a plurality of connection terminals to which the plurality of power input lines are respectively connected one by one.

[0010] In order to achieve the above object, a rotating electric machine according to a twenty-sixth aspect of the present invention includes the stator and a circuit board to which each of the plurality of power input lines is directly connected.

[0011] In order to achieve the above object, the present invention provides a method for manufacturing a stator according to claims 27 and 28, which is a method for manufacturing a stator having a core having a plurality of split cores each formed with a plurality of teeth portions, and a winding having a plurality of coil portions wound around the plurality of teeth portions in a concentrated winding manner, the winding being arranged such that a U-phase coil portion forming a U-phase, a V-phase coil portion forming a V-phase, and a W-phase coil portion forming a W-phase are repeatedly arranged in order on one circumferential side of the core, the winding being wound around the plurality of teeth portions in a delta-connected m-series / n-parallel manner where m is a natural number of 2 or more and n is a natural number, or a k-series / n-parallel manner where k is an even number of 2 or more and n is a natural number. and when winding the winding around the plurality of teeth portions, among the coil portions of different phases, connecting a starting end of one coil portion to an end terminal of another coil portion to form each of a plurality of power input lines, and forming a plurality of first direction crossover wires connecting a starting end of one coil portion to an end terminal of another coil portion located on one circumferential side of the core with respect to the one coil portion and at least one second direction crossover wire connecting an end terminal of one coil portion to a starting end of another coil portion located on the other circumferential side of the core with respect to the one coil portion, among the coil portions of the same phase, and connecting ends of the windings together in any one or some of the plurality of power input lines to form the delta connection.

[0012] In order to achieve the above-mentioned object, a manufacturing method for a rotating electric machine according to claim 29 of the present invention includes manufacturing the stator by the above-mentioned stator manufacturing method, and connecting the multiple power input lines to multiple connection terminals, each of which has two or more power input lines connected thereto.

[0013] In order to achieve the above-mentioned object, a method for manufacturing a rotating electric machine according to claim 29 of the present invention includes manufacturing the stator by the above-mentioned stator manufacturing method, and connecting the multiple power input lines to multiple connection terminals, each of which is connected one by one.

[0014] In order to achieve the above-mentioned object, a method for manufacturing a rotating electric machine according to claim 31 of the present invention includes manufacturing the stator by the above-mentioned stator manufacturing method, and directly connecting each of the plurality of power input lines to a circuit board. Effect of the Invention

[0015] According to the present invention, a rotating electric machine that can be made small and has high output by increasing the space occupied by the windings can be provided at low cost and with high quality. [Brief description of the drawings]

[0016] [Figure 1] 1 is a vertical sectional view of a rotating electric machine according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a plan view of the stator shown in FIG. [Diagram 3] FIG. 3 is a winding connection diagram of the stator shown in FIG. 2. [Figure 4] 4 is a diagram showing a core setting step in a first embodiment of a manufacturing method for a rotating electric machine according to an embodiment of the present invention. FIG. [Diagram 5] FIG. 4 is a diagram showing a winding winding process in the first embodiment. [Figure 6] FIG. 4 is a connection configuration diagram of a plurality of coil parts connected by a winding winding process in the first embodiment. [Figure 7] 5A to 5C are diagrams illustrating how a plurality of power input lines are shaped in a winding shaping step in the first embodiment. [Figure 8] FIG. 11 is a diagram showing a state after a plurality of power input lines have been shaped in a winding shaping step in the first embodiment. [Figure 9A] 5A to 5C are two-sided views showing an example of a state in which a power input line is connected by fusing in a connection step in the first embodiment. [Figure 9B] 4A to 4C are two views showing an example of a state in which a winding start end and a rear end of a winding are connected by fusing in a wire connection step in the first embodiment. [Figure 10]7A to 7C are diagrams illustrating a process of winding a winding around a core according to a modified example of the winding winding step in the first embodiment. [Figure 11] 10 is a diagram showing a core setting step in a modified example of the first embodiment of the method for manufacturing a rotating electric machine according to an embodiment of the present invention. FIG. [Figure 12] 13 is a diagram showing a state in which the core is reversed in another modified example of the first embodiment of the method for manufacturing a rotating electric machine according to an embodiment of the present invention. FIG. [Figure 13] 5A to 5C are diagrams illustrating a state in which a core is inverted in a core inverting step in the first embodiment. [Figure 14] FIG. 11 is a diagram showing a winding winding process in the second embodiment. [Figure 15] FIG. 11 is a winding connection diagram of a stator in a third embodiment. [Figure 16] FIG. 13 is a diagram showing a winding winding process in the third embodiment. [Figure 17] FIG. 11 is a diagram showing a connection configuration of a plurality of coil parts connected by a winding winding process in the third embodiment. [Figure 18] 13A to 13C are diagrams illustrating a process of winding a winding around a core in a winding winding step in the fourth embodiment. [Figure 19] FIG. 13 is a diagram showing a winding winding process in the fourth embodiment. [Figure 20] FIG. 13 is a diagram showing a connection configuration of a plurality of coil parts connected by a winding winding process in the fourth embodiment. [Figure 21] 13 is a diagram showing a core setting step in a modified example of the fourth embodiment of the method for manufacturing a rotating electric machine according to an embodiment of the present invention. FIG. [Figure 22] 13 is a diagram showing a core setting step in another modified example of the fourth embodiment of the method for manufacturing a rotating electric machine according to an embodiment of the present invention. FIG. [Figure 23] FIG. 13 is a diagram showing a winding winding process in the fifth embodiment. [Figure 24] 13A to 13C are diagrams illustrating a process of winding a winding around a core in a winding winding step in the sixth embodiment. [Diagram 25]FIG. 13 is a diagram showing a winding winding process in the sixth embodiment. [Figure 26] FIG. 13 is a diagram showing a core setting step in a modified example of the sixth embodiment of the method for manufacturing a rotating electric machine according to an embodiment of the present invention. [Figure 27] FIG. 13 is a diagram showing a core setting step in a seventh embodiment of a manufacturing method for a rotating electric machine according to an embodiment of the present invention. [Figure 28] FIG. 13 is a diagram showing a winding winding process in the seventh embodiment. [Figure 29] FIG. 13 is a connection configuration diagram of a plurality of coil parts connected by a winding winding process in the seventh embodiment. [Diagram 30] FIG. 13 is a diagram showing a core setting step in a modified example of the seventh embodiment of the method for manufacturing a rotating electric machine according to an embodiment of the present invention. [Diagram 31] FIG. 13 is a diagram showing a core setting step in another modified example of the seventh embodiment of the method for manufacturing a rotating electric machine according to an embodiment of the present invention. [Diagram 32] FIG. 23 is a diagram showing a winding winding process in the eighth embodiment. [Diagram 33] FIG. 13 is a diagram showing a winding winding process in the ninth embodiment. [Diagram 34] FIG. 23 is a diagram showing a winding winding process in the tenth embodiment. [Diagram 35] FIG. 23 is a diagram showing a winding process in the eleventh embodiment. [Diagram 36] FIG. 23 is a diagram showing a winding winding process in the twelfth embodiment. [Figure 37] FIG. 23 is a diagram showing a winding winding process in the thirteenth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] (Schematic configuration of a rotating electric machine) First, a schematic configuration of a rotating electrical machine 10 according to an embodiment of the present invention will be described.

[0018] Fig. 1 is a vertical cross-sectional view of a rotating electric machine 10 according to one embodiment of the present invention. The rotating electric machine 10 shown in Fig. 1 is an inner rotor type brushless motor. An arrow Z1 shown in the figure indicates the other axial side (the back side of the rotating electric machine), and an arrow Z2 indicates one axial side (the front side of the rotating electric machine). The rotating electric machine 10 includes a motor shaft 16, a rotor 18, a stator 20, a motor housing 22, and a front housing 24.

[0019] The rotor 18 has a rotor body 30 and a rotor magnet 32. The motor shaft 16 extending in the axial direction of the rotor 18 is fixed to the axial center of the rotor body 30.

[0020] The motor housing 22 is formed in a bottomed cylindrical shape having a bottom on the other axial side Z1. The front housing 24 is provided on one axial side Z2 of the motor housing 22. Bearings 26 are provided in the motor housing 22 and the front housing 24. The motor shaft 16 is rotatably supported by the pair of bearings 26.

[0021] The stator 20 is formed in an annular shape. The stator 20 is fixed to the inner peripheral surface of a motor housing 22. The stator 20 includes a core 50, a resin insulator 62 covering a core body 60 (described later), and a winding 70. The core 50 has a plurality of teeth 54 extending radially. The winding 70 has a plurality of coils 78 wound around the plurality of teeth 54. The rotor 18 is rotatably housed inside the stator 20.

[0022] The windings 70 are connected to a circuit board 28. The circuit board 28 may be provided inside the rotating electric machine 10, or may be provided outside the rotating electric machine 10. The circuit board 28 may be either integrated with the rotating electric machine 10 or separate from it. The circuit board 28 has an electronic circuit for switching the supply of current to each coil portion 78. The windings 70 are connected to the circuit board 28 via terminals, or directly to the circuit board 28.

[0023] In the above-mentioned rotating electric machine 10, when the current supply to the multiple coil sections 78 is switched by the circuit board 28, a rotating magnetic field is formed in the stator 20, and the rotor 18 is rotated by the attractive and repulsive forces acting between this rotating magnetic field and the rotor 18 magnet.

[0024] (Details of stator 20) Next, the stator 20 will be described in more detail.

[0025] Fig. 2 is a plan view of the stator 20 shown in Fig. 1. An arrow R1 shown in the figure indicates one circumferential side of the stator 20 when viewed from the front side (Z2 side) of the rotating electric machine 10, and an arrow R2 indicates the other circumferential side of the stator 20 when viewed from the front side (Z2 side) of the rotating electric machine 10. As shown in Fig. 2, the core 50 has, as an example, a plurality of split cores 56 and a plurality of hinge portions 58 connecting adjacent split cores 56. Each split core 56 is configured by covering a metal core body 60 with an insulator 62. As an example, the hinge portions 58 are formed in the insulator 62.

[0026] Each split core 56 has teeth 54. The teeth 54 extend radially inward of the core 50. As an example, the number of teeth 54 is twelve.

[0027] A coil portion 78 is wound around each tooth portion 54 by a concentrated winding method. The number of coil portions 78 is 12, the same as the number of teeth portions 54. The coil portions 78 are arranged such that U-phase coil portions U1 to U4 forming a U-phase, V-phase coil portions V1 to V4 forming a V-phase, and W-phase coil portions W1 to W4 forming a W-phase are repeatedly arranged in order on one circumferential side R1 of the core 50. In other words, each of the coil portions 78 has four coil portions 78 of the same phase.

[0028] (Winding connection configuration) Fig. 3 is a connection diagram of the windings 70 of the stator 20 shown in Fig. 2. As shown in Fig. 3, in this embodiment, the windings are delta-connected in an m-series / n-parallel configuration where m is a natural number of 2 or more and n is a natural number, or the windings are delta-connected in a k-series / n-parallel configuration where k is an even number of 2 or more and n is a natural number.

[0029] As shown in FIG. 3, the winding 70 has a number of power input lines 82 and a number of crossover lines 84 .

[0030] In addition, each of the multiple power input lines 82 connects the end of one of the coil sections 78 of different phases to the start of the other coil section 78 that is located on one circumferential side R1 of the core 50 relative to the one coil section 78.

[0031] In addition, each of the multiple jumper wires 84 includes a first direction jumper wire that connects an end of one coil portion 78 among the coil portions 78 of the same phase to a starting end of another coil portion 78 that is located on one circumferential side R1 of the core 50 relative to the one coil portion 78, and a second direction jumper wire that connects an end of one coil portion 78 among the coil portions 78 of the same phase to a starting end of the other coil portion 78 that is located on the other circumferential side R2 of the core 50 relative to the one coil portion 78.

[0032] To specifically explain the wiring configuration of the delta-connected coil sections 78, the coil sections 78 of the same phase are connected by crossover wires 84 to form a coil array 78A. Furthermore, three coil groups 80 made up of the coil sections 78 of the same phase are connected in a delta shape (triangle) by multiple power input lines 82.

[0033] [First embodiment of manufacturing method for rotating electric machine] First, a first embodiment of a method for manufacturing a rotating electric machine 10 according to an embodiment of the present invention will be described.

[0034] In the first embodiment of the manufacturing method for the rotating electric machine 10, the multiple coil portions 78 are delta-connected in a 4-series manner as an example of an m-series, n-parallel delta connection where m is a natural number equal to or greater than 2. That is, in the first embodiment of the manufacturing method for the rotating electric machine 10, m=4 and n=1, and the number of slots, teeth portions 54, and coil portions 78 is 12.

[0035] To specifically explain the wiring configuration of the multiple coil sections 78 that are delta-connected in four-series configuration, four coil sections 78 of the same phase are connected in series to form one coil row 78A. Furthermore, three coil groups 80 each consisting of the four coil sections 78 of the same phase are connected in a delta shape (triangle).

[0036] The first embodiment of the method for manufacturing the rotating electric machine 10 includes a core setting step, a winding step, a winding shaping step, a connection step, and an assembly step. The core setting step, the winding step, and the winding shaping step correspond to a method for manufacturing the stator 20 according to one embodiment of the present invention. These steps will be described in order below.

[0037] (Core set process) Fig. 4 is a diagram showing a core setting process in the first embodiment. In the core setting process in the first embodiment shown in Fig. 4, as an example, the multiple split cores 56 are held by a temporary connection molding runner 106 molded integrally with the insulator 62. The temporary connection molding runner 106 extends from the surfaces of the multiple split cores 56 opposite the teeth portions 54, and each is connected in a substantially straight line. At this time, the multiple split cores 56 are in a state where the tip portions of the multiple teeth portions 54 are aligned in a straight line.

[0038] In the first embodiment, as an example, one nozzle 120 is used. The nozzle 120 is disposed opposite the split core 56 disposed at one end of the temporary coupling molding runner 106. As will be described later, when the winding 70 is wound in sequence around the multiple teeth portions 54, the nozzle 120 moves so as to sequentially face the multiple teeth portions 54 attached to the temporary coupling molding runner 106.

[0039] (Winding process) As shown in Fig. 4, in the winding process in the first embodiment, as an example, one nozzle 120 is used, and a winding 70, which is a single continuous wire, is wound sequentially around multiple teeth portions 54 using a single nozzle method. Fig. 5 is a diagram of the winding process in the first embodiment, and Table 1 is a process chart showing the winding order in the winding process in the first embodiment.

[0040] In the following description of each step, the twelve teeth 54 will be referred to as follows in order from one circumferential side R1 of the core 50, corresponding to the notations U1 to W4 in the figure. (1) First teeth part 54U1 (2) Second teeth part 54V1 (3) 3rd teeth part 54W1 (4) 4th teeth part 54U2 (5) 5th teeth part 54V2 (6) 6th teeth part 54W2 (7) 7th teeth part 54U3 (8) 8th teeth part 54V3 (9) 9th teeth part 54W3 (10) 10th teeth part 54U4 (11) 11th teeth part 54V4 (12) 12th teeth part 54W4

[0041] The twelve coil portions 78 wound around the first teeth portion 54U1 to the twelfth teeth portion 54W4, respectively, will be referred to as follows. (1) First coil section 78U1 (2) Second coil section 78V1 (3) Third coil section 78W1 (4) Fourth coil section 78U2 (5) 5th coil section 78V2 (6) 6th coil section 78W2 (7) 7th coil section 78U3 (8) 8th coil section 78V3 (9) 9th coil section 78W3 (10) 10th coil part 78U4 (11) 11th coil part 78V4 (12) 12th coil section 78W4

[0042] Furthermore, the winding 70 has three power input wires 82 that connect the coil portions 78 of different phases together. The three power input wires 82 each have a first connection portion C1 to a third connection portion A1 that are connected in a connection step described below. In the following explanation of each step, the three power input wires 82 will be referred to as follows in order on one circumferential side R1 of the core 50, corresponding to the notations U1 to W4 in the figure. (1) First power input line 82V1-W1 (2) Second power input line 82U4-V4 (3) 3rd power input line 82W4-U1

[0043] Further, the winding 70 has nine crossover wires 84 that connect the coil portions 78 of the same phase to each other. In the following explanation of each process, the nine crossover wires 84 will be referred to as follows in order from one circumferential side R1 of the core 50, corresponding to the notations U1 to W4 in the figure. (1) First crossover 84U1-U2 (2) Second crossover 84V2-V1 (3) Third crossover 84W1-W2 (4) 4th crossover 84U2-U3 (5) 5th crossover 84V3-V2 (6) 6th crossover 84W2-W3 (7) 7th crossover 84U3-U4 (8) 8th crossover 84V4-V3 (9) 9th crossover 84W3-W4

[0044] Furthermore, among the crossover wires 84, the first crossover wire 84U1-U2, the third crossover wire 84W1-W2, the fourth crossover wire 84U2-U3, the sixth crossover wire 84W2-W3, the seventh crossover wire 84U3-U4, and the ninth crossover wire 84W3-W4 correspond to the "first direction crossover wire" in the present invention, and the second crossover wire 84V2-V1, the fifth crossover wire 84V3-V2, and the eighth crossover wire 84V4-V3 correspond to the "second direction crossover wire" in the present invention.

[0045] In the winding process in the first embodiment, the winding 70 is wound in the following order of steps 1 to 12. In the drawing, the circled numbers 1 to 12 indicate the order in which the multiple coil portions 78 are formed.

[0046] (First Step) In the first step, the winding 70 is wound from one axial side Z2 of the core 50 to the first tooth portion 54U1 in a clockwise direction as viewed from the axial direction an integer number of turns to form the first coil portion 78U1, and then led out to the one axial side Z2 of the core 50.

[0047] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the fourth coil portion 54U2 to form a first crossover wire 84U1-U2.

[0048] (Second step) In the second step, the winding 70 is wound from one axial side Z2 of the core 50 to the fourth tooth portion 54U2 an integer number of turns in a clockwise direction as viewed from the axial direction to form the fourth coil portion 78U2, and then led out to the one axial side Z2 of the core 50.

[0049] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the seventh coil portion 54U3 to form a fourth crossover wire 84U2-U3.

[0050] (Third Step) In the third step, the winding 70 is wound from one axial side Z2 of the core 50 to the seventh tooth portion 54U3 an integer number of turns in a clockwise direction as viewed from the axial direction to form the seventh coil portion 78U3, and then led out to the one axial side Z2 of the core 50.

[0051] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the tenth coil portion 54U4 to form a seventh crossover wire 84U3-U4.

[0052] (Fourth step) In the fourth step, the winding 70 is wound from one axial side Z2 of the core 50 to the tenth tooth portion 54U4 an integer number of turns in a clockwise direction as viewed from the axial direction to form the tenth coil portion 78U4, and then led out to the one axial side Z2 of the core 50.

[0053] Thereafter, the winding 70 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the second power input line 82U4-V4 is formed by a continuous wire across the eleventh coil portion 54V4.

[0054] (5th step) In the fifth step, the winding 70 is wound an integer number of turns clockwise from one axial side Z2 of the core 50 to the eleventh tooth portion 54V4 when viewed from the axial direction to form the eleventh coil portion 78V4, and then led out to the one axial side Z2 of the core 50.

[0055] Thereafter, the winding 70 is routed from one axial side Z2 to the other circumferential side R2 across the eighth coil portion 54V3 to form an eighth jumper wire 84V4-V3.

[0056] (Sixth step) In the sixth step, the winding 70 is wound an integer number of turns clockwise from one axial side Z2 of the core 50 to the eighth tooth portion 54V3 when viewed from the axial direction to form the eighth coil portion 78V3, and then led out to the one axial side Z2 of the core 50.

[0057] Thereafter, the winding 70 is routed from one axial side Z2 to the other circumferential side R2 across the fifth coil portion 54V2 to form a fifth jumper 84V3-V2.

[0058] (Seventh step) In the seventh step, the winding 70 is wound from one axial side Z2 of the core 50 to the fifth tooth portion 54V2 an integer number of turns in a clockwise direction as viewed from the axial direction to form the fifth coil portion 78V2, and then led out to the one axial side Z2 of the core 50.

[0059] Thereafter, the winding 70 is routed from one axial side Z2 to the other circumferential side R2 across the second coil portion 54V1 to form a second jumper 84V2-V1.

[0060] (Step 8) In the eighth step, the winding 70 is wound from one axial side Z2 of the core 50 to the second tooth portion 54V1 an integer number of turns in a clockwise direction when viewed from the axial direction to form the second coil portion 78V1, and then led out to the one axial side Z2 of the core 50.

[0061] Thereafter, the winding 70 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the first power input line 82V1-W1 across the third coil portion 54W1 is formed by a continuous wire.

[0062] (9th step) In the ninth step, the winding 70 is wound from one axial side Z2 of the core 50 to the third tooth portion 54W1 an integer number of turns in a clockwise direction when viewed from the axial direction to form the third coil portion 78W1, and then led out to the one axial side Z2 of the core 50.

[0063] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the sixth coil portion 54W2 to form a third jumper 84W1-W2.

[0064] (Step 10) In the tenth step, the winding 70 is wound from one axial side Z2 of the core 50 to the sixth tooth portion 54W2 an integer number of turns in a clockwise direction when viewed from the axial direction to form the sixth coil portion 78W2, and then led out to the one axial side Z2 of the core 50.

[0065] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the ninth coil portion 54W3 to form a sixth jumper 84W2-W3.

[0066] (Step 11) In the 11th step, the winding 70 is wound from one axial side Z2 of the core 50 to the ninth tooth portion 54W3 an integer number of turns in a clockwise direction when viewed from the axial direction to form the ninth coil portion 78W3, and then led out to the one axial side Z2 of the core 50.

[0067] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the twelfth coil portion 54W4, forming a ninth crossover wire 84W3-W4.

[0068] (Step 12) In the 12th step, the winding 70 is wound from one axial side Z2 of the core 50 to the 12th tooth portion 54W4 an integer number of turns in a clockwise direction when viewed from the axial direction to form the 12th coil portion 78W4, and then led out to the one axial side Z2 of the core 50.

[0069] Thereafter, the winding 70 is routed from one axial side Z2 of the core 50 to one circumferential side R1 to the winding start end 82A of the winding 70, and the third power input line 82W4-U1 is formed by a connection process described below.

[0070] [Table 1]

[0071] In the first embodiment, a four-series delta connection is formed in the above manner. Fig. 6 is a connection configuration diagram of a plurality of coil parts 78 connected by the winding winding process in the first embodiment, and as shown in Fig. 4, the winding 70 is wound around the core 50 by the winding winding process in the first embodiment.

[0072] 5 and 6, the first power input line 82V1-W1 connects the end of the second coil portion 78V1 to the beginning of the third coil portion 78W1, the second power input line 82U4-V4 connects the end of the tenth coil portion 78U4 to the beginning of the eleventh coil portion 78V4, and the third power input line 82W4-U1 connects the end of the twelfth coil portion 78W4 to the beginning of the first coil portion 78U1 by a wiring process described below.

[0073] 5, the first power input line 82V1-W1, the second power input line 82U2-V2, and the third power input line 82W4-U1 are continuously wired. The first power input line 82V1-W1, the second power input line 82U2-V2, and the third power input line 82W4-U1 are disposed on one axial side Z2 of the core 50. The third power input line 82W4-U1 has a connection portion 90 that connects the winding start end 82A and the winding end end of the winding 70 together by a wiring connection process described below.

[0074] 5 and 6, the first jumper 84U1-U2 connects the end of the first coil portion 78U1 to the start of the fourth coil portion 78U2, the second jumper 84V2-V1 connects the end of the fifth coil portion 78V2 to the start of the second coil portion 78V1, the third jumper 84W1-W2 connects the end of the third coil portion 78W1 to the start of the sixth coil portion 78W2, and the fourth jumper 84U2-U3 connects the end of the fourth coil portion 78U2 to the start of the seventh coil portion 78U3. The fifth jumper 84V3-V2 connects the end of the eighth coil section 78V3 to the beginning of the fifth coil section 78V2, and the sixth jumper 84W2-W3 connects the end of the sixth coil section 78W2 to the beginning of the ninth coil section 78W3. The seventh jumper 84U3-U4 connects the end of the seventh coil section 78U3 to the beginning of the tenth coil section 78U4, and the eighth jumper 84V4-V3 connects the end of the eleventh coil section 78V4 to the beginning of the eighth coil section 78V3. The ninth jumper 84W3-W4 connects the end of the ninth coil section 78W3 to the beginning of the twelfth coil section 78W4.

[0075] As shown in Figure 7 described later, the first crossover wire 84U1-U2, the second crossover wire 84V2-V1, the third crossover wire 84W1-W2, the fourth crossover wire 84U2-U3, the fifth crossover wire 84V3-V2, the sixth crossover wire 84W2-W3, the seventh crossover wire 84U3-U4, the eighth crossover wire 84V4-V3, and the ninth crossover wire 84W3-W4 are arranged on one axial side Z2 of the core 50.

[0076] Furthermore, in the winding process in the first embodiment, of the multiple coil sections 78, the U-phase coil sections U1 to U4 and the W-phase coil sections W1 to W4 are wound by moving the nozzle 120 to one circumferential side R1 of the core 50, and the V-phase coil sections V1 to V4 are wound by moving the nozzle 120 to the other circumferential side R2 of the core 50.

[0077] After the winding process, for example, each of the split cores 56 is cut off from the temporary joint molding runner 106 and connected in an annular shape with the teeth portions 54 facing radially inward.

[0078] (Winding shaping process) FIG. 7 is a diagram explaining how the first power input line 82V1-W1 and the second power input line 82U4-V4, as well as the starting end and the ending end of the winding 70, are shaped in the winding shaping process in the first embodiment, and FIG. 8 is a diagram showing the state after the first power input line 82V1-W1 and the second power input line 82U4-V4, as well as the starting end and the ending end of the winding 70 have been shaped in the winding shaping process in the first embodiment.

[0079] As shown in FIG. 7, the winding shaping step is performed, for example, in a state where a plurality of connection terminals 98 are attached to the core 50. The number of the connection terminals 98 is three, which is the number of the first power input line 82V1-W1, the second power input line 82U2-V2, and the third power input line 82W4-U1. The connection terminals 98 are formed, for example, in a terminal that is connected to the above-mentioned circuit board 28 (see FIG. 1). In FIG. 7 and FIG. 8, the connection terminals 98 are shown typically. Similarly, in FIG. 7 and FIG. 8, the first power input line 82V1-W1 and the second power input line 82U4-V4, as well as the start end of the winding 70 and the end end of the winding 70 are shown typically.

[0080] In the following description of each process, A to C in the drawing are multiple connection terminals 98, with A being referred to as the third connection terminal 98A, B being the second connection terminal 98B, and C being the first connection terminal 98C. In the example drawing, for example, the first connection terminal 98C is disposed between the first coil portion 78U1 and the second coil portion 78V1, the second connection terminal 98B is disposed between the eleventh coil portion 78V4 and the twelfth coil portion 78W4, and the third connection terminal 98A is disposed between the first coil portion 78U1 and the twelfth coil portion 78W4.

[0081] 7, in the winding shaping process, the first power input line 82V1-W1 is shaped so that the first connection portion C1 of the first power input line 82V1-W1 moves to the first connection terminal 98C. The first connection terminal 98C is, for example, hook-shaped, and the first connection portion C1 is engaged with the first connection terminal 98C.

[0082] Similarly, the second power input line 82U4-V4 is shaped so that the second connection portion B1 of the second power input line 82U4-V4 moves to the second connection terminal 98B. The second connection terminal 98B is, for example, hook-shaped, and the second connection portion B1 is engaged with the second connection terminal 98B.

[0083] Similarly, the third power input line 82W4-U1 is shaped so that the third connection portion A1 of the third power input line 82W4-U1 formed by a connection process described below moves to the third connection terminal 98A. The third connection terminal 98A is, for example, hook-shaped, and the third connection portion A1 is engaged with the third connection terminal 98A.

[0084] (Wiring process) In the connection step, the first connection terminal 98C and the first connection portion C1 are connected by, for example, fusing. Similarly, the second connection terminal 98B and the second connection portion B1 are connected by, for example, fusing, and the third connection terminal 98A and the third connection portion A1 are connected by, for example, fusing. Thus, in the connection step, the first power input lines 82V1-W1 and the second power input lines 82U4-V4 are connected to the first connection terminal 98C and the second connection terminal 98B, respectively, and the winding start end 82A of the winding 70 and the winding end end 82B of the winding 70 are connected to the third connection terminal 98A.

[0085] 9A is a two-sided view showing, as an example, a state in which the first connection terminal 98C and the first connection portion C1 are connected by fusing. The first connection portion C1 of the first power input line 82V1-W1 is engaged with the first connection terminal 98C, and the first power input line 82V1-W1 is connected by fusing. Similarly, the second power input line 82U4-V4 is also connected to the second connection terminal 98B.

[0086] 9B is a two-sided view showing, as an example, a state in which the third connection terminal 98A is connected to the winding start end 82A of the winding 70 and the winding end 82B of the winding 70 by fusing. The winding start end 82A of the winding 70 and the winding end end 82B of the winding 70 are engaged with the third connection terminal 98A, and a connection portion 90 is formed by fusing. This forms the third power input line 82W4-U1, and at the same time, the third power input line 82W4-U1 is connected to the third connection terminal 98A.

[0087] (Assembly process) In the assembly process, a number of components constituting the rotating electric machine 10 shown in FIG. 1, namely the motor shaft 16, the rotor 18, the stator 20, the motor housing 22, the front housing 24, etc., are assembled together.

[0088] In the first embodiment of the method for manufacturing the rotating electric machine 10, the rotating electric machine 10 (see FIG. 1) is manufactured in the above-described manner.

[0089] (Winding configuration) 8, the stator 20 of the rotating electric machine 10 manufactured in the above manner has a plurality of teeth 54 extending radially inward of the core 50. The stator 20 also includes a winding 70 that is delta-connected in four-series configuration. The winding 70 has a plurality of coil portions 78 wound around the plurality of teeth 54 using a concentrated winding method.

[0090] The multiple coil portions 78 are arranged in such a way that U-phase coil portions 78 forming a U-phase, V-phase coil portions 78 forming a V-phase, and W-phase coil portions 78 forming a W-phase are repeatedly arranged in sequence on one circumferential side R1 of the core 50.

[0091] The winding 70 has a plurality of power input lines 82 and a plurality of crossover lines 84. The plurality of power input lines 82 and the plurality of crossover lines 84 are disposed on one axial side Z2 of the core 50.

[0092] Each of the multiple power input lines 82 connects an end of one coil portion 78, among the coil portions 78 of different phases, to a starting end of another coil portion 78 located on one circumferential side R1 of the core 50 relative to the one coil portion 78. Also, each of the multiple jumper wires 84 is a first-direction jumper wire connecting an end of one coil portion 78, among the coil portions 78 of the same phase, to a starting end of another coil portion 78 located on the other circumferential side R2 of the core 50 relative to the one coil portion 78, or a second-direction jumper wire connecting an end of one coil portion 78, among the coil portions 78 of the same phase, to a starting end of the other coil portion 78 located on one circumferential side R1 of the core 50 relative to the one coil portion 78.

[0093] Each of the multiple power input lines 82 is wired across two teeth portions 54. Each of the multiple first direction crossover wires is wired across 2 × 2 teeth portions 54, and each of the multiple second direction crossover wires is wired across two teeth portions 54.

[0094] The winding 70 is formed of a single continuous wire, and any one of the multiple power input lines 82 has a connection portion 90 that connects ends of the winding 70. The multiple power input lines 82 are connected to connection terminals 98 one by one.

[0095] (Action and Effects) Next, the operation and effects of the first embodiment will be described.

[0096] 5, in the winding process in the first embodiment, the nozzle 120 moves to one circumferential side R1 of the core 50 to wind the teeth 54 of two phases out of the U, V, and W phases, and moves to the other circumferential side R2 of the core 50 to wind the teeth 54 of one phase out of the U, V, and W phases, thereby forming a plurality of coil portions 78. As a result, it becomes possible to wind the winding 70 around the plurality of teeth portions 54 with a continuous wire, thereby improving productivity.

[0097] As shown in FIG. 5, the order and wiring of winding the winding 70 around the teeth 54 are devised, so that the power input wires 82 connecting the end of one coil portion 78 and the start of the other coil portion 78 of different phases are continuous except for the third power input wire 82W4-U1 (see also FIG. 7). Therefore, when the core 50 is made into an annular shape after the winding process around the teeth 54, the jumper wires 84 between the coil portions 78 and the power input wires 82 can be prevented from being entangled in a complicated manner. This can prevent the coil portion 78 from collapsing or sagging, and the jumper wires 84 and the power input wires 82 from being caught and damaging the insulation coating of the winding 70. As a result, there is no need for complex dedicated auxiliary tools or dedicated equipment, so that the manufacturing cost can be reduced.

[0098] 7 and 8, in the process of shaping the power input line 82 and connecting the power input line 82 to the connection terminal 98, it is possible to prevent the jumper wires 84 between the coil portions 78 and the power input line 82 from becoming complicatedly entangled. Therefore, it is no longer necessary to use a bus bar with a complex structure for connecting the power input line 82 to the circuit board 28 (see FIG. 1) and for simplifying the shaping of the power input line 82, so that it is possible to reduce the number of parts and suppress the manufacturing costs.

[0099] Thus, according to the first embodiment, it is possible to provide a rotating electric machine 10 (see FIG. 1) that can be made small and has high output due to a large space occupied by the windings 70, at low cost and with high quality.

[0100] In particular, the rotating electric machine 10 is an inner rotor type brushless motor in which multiple teeth 54 extend radially inward from the core 50, and according to the first embodiment, it is possible to realize a small, high-output, and low-cost inner rotor type brushless motor.

[0101] Moreover, the multiple power input lines 82 are arranged on one axial side Z2 of the core 50, and the multiple crossover lines 84 are arranged on the one axial side Z2 of the core 50. Therefore, the space on the other axial side Z1 can be minimized.

[0102] Furthermore, each of the multiple power input lines 82 is wired across two teeth portions 54. Therefore, the distance between both ends of the power input lines 82 and the distance between both ends of the jumper lines 84 are sufficiently secured, which also makes it possible to prevent the jumper lines 84 between the coil portions 78 and the power input lines 82 from becoming entangled in a complicated manner.

[0103] Moreover, each of the multiple jumper wires 84 is wired across two or 2 × 2 tooth portions 54. Therefore, the distance between both ends of the power input wire 82 and the distance between both ends of the jumper wire 84 are sufficiently secured, which also makes it possible to prevent the jumper wires 84 between the coil portions 78 and the power input wires 82 from becoming entangled in a complicated manner.

[0104] Moreover, the winding 70 is formed of a single continuous wire. Therefore, the winding 70 can be wound around a plurality of teeth 54 using one nozzle 120, and the configuration of the winding device including the nozzle 120 can be simplified. This also contributes to keeping manufacturing costs down.

[0105] (Modification) Next, a modification of the first embodiment will be described.

[0106] The stator 20 according to the first embodiment has m=4 and n=1 as an example of an m-series, n-parallel delta connection where m is a natural number of 2 or more, but the manufacturing method of the stator 20 according to the first embodiment is applicable to all three-phase brushless motors in which the number of slots, teeth portions 54, and coil portions 78 is a multiple of 3 and is 6 or more. For example, the numbers of slots, teeth portions 54, and coil portions 78 can be 6 (m=2 and n=1), 9 (m=3 and n=1), 12 (m=4 and n=1), 15 (m=5 and n=1), 18 (m=6 and n=1), 21 (m=7 and n=1), 24 (m=8 and n=1), 27 (m=9 and n=1), 30 (m=10 and n=1), 33 (m=11 and n=1), 36 (m=12 and n=1), etc.

[0107] Furthermore, the winding device according to the present embodiment is not limited to a single nozzle type, and may be, for example, a single flyer type.

[0108] 7, the winding shaping process is performed, for example, in a state in which the multiple connection terminals 98 are attached to the core 50, but the winding shaping process may be performed in a state before the multiple connection terminals 98 are attached to the core 50. In this case, in the wiring process, after the multiple connection terminals 98 are attached to the core 50, the multiple power input lines 82 are connected to the multiple connection terminals 98.

[0109] In addition, the stator 20 is an inner rotor type stator 20 in which the multiple teeth portions 54 extend radially inward from the core 50, but it may also be an outer rotor type stator 20 in which the multiple teeth portions 54 extend radially outward from the core 50.

[0110] 10, the temporary coupling molding runner 106 may be modified as follows. That is, the temporary coupling molding runner 108 extends from the opposite surface of the teeth portions 54 of the split cores 56 and is connected to each of them in a generally annular shape. In this case, the split cores 56 are arranged in an annular shape such that the tips of the teeth portions 54 are located on the outer periphery of the core 50. The winding 70 is wound around the core 50 by moving the nozzle 120 from one of the split cores 56 arranged in an annular shape to a split core 56 located in the circumferential direction of the temporary coupling molding runner 108 relative to the one split core 56, thereby performing the winding process described above.

[0111] In this case, after the winding 70 is wound around the core 50 , the winding is turned over so that the tips of the multiple teeth 54 are positioned on the inner periphery of the core 50 .

[0112] After the core 50 has been inverted, the rotating electric machine 10 (see FIG. 1) is manufactured in the same manner as in the winding shaping process described above and subsequent steps.

[0113] It should be noted that this modified example is not limited to the single nozzle system. The nozzle 120 may be replaced by a flyer 110, and the flyer 110 may move to perform winding on the core 50.

[0114] 11, the temporary joint molding runner 106 may be changed to a jig 100 having a generally triangular shape in a plan view, and the nozzle 120 may be changed to a flyer 110 to form a single flyer system. In this case, the multiple split cores 56 are connected in an annular shape such that the tips of the multiple teeth portions 54 are located on the outer periphery of the core 50. As a result, the winding 70 is wound around the core 50 by the flyer 110 performing the above-mentioned winding process in the circumferential direction from any one of the split cores 56 arranged in an annular shape.

[0115] In this case, after the winding process, the core 50 is inverted as shown in Fig. 12. The core 50 is then inverted so that it changes from a state in which the tips of the teeth 54 are connected in an annular shape so as to be located on the outer periphery of the core 50 as shown in Fig. 12, to a band-like state as shown in Fig. 13, and then to a state in which the tips of the teeth 54 are connected in an annular shape so as to be located on the inner periphery of the core 50 (see Fig. 7).

[0116] After the core 50 has been inverted, the rotating electric machine 10 (see FIG. 1) is manufactured in the same manner as in the winding shaping process described above and subsequent steps.

[0117] In the winding process according to the first embodiment, the V-phase coil portions V1 to V4 of the U-phase, V-phase, and W-phase coils are wound by moving the nozzle 120 to the other circumferential side R2 of the core 50, but the winding process according to the present embodiment is not limited to this. For example, the U-phase coil portions U1 to U4 or the W-phase coil portions W1 to W4 may be wound by moving the nozzle 120 to the other circumferential side R2 of the core 50. Even in this case, it is possible to wind the winding 70 around the multiple teeth portions 54 using a continuous wire, thereby improving productivity.

[0118] [Second embodiment of the manufacturing method for a rotating electric machine] Next, a second embodiment of the method for manufacturing the rotating electric machine 10 according to an embodiment of the present invention will be described.

[0119] In the second embodiment of the method for manufacturing the rotating electric machine 10, the core setting process is similar to that in the first embodiment of the method for manufacturing the rotating electric machine 10. Meanwhile, in the second embodiment of the method for manufacturing the rotating electric machine 10, the winding winding process is changed as follows compared to the first embodiment of the method for manufacturing the rotating electric machine 10.

[0120] (Winding process) In the winding process in the second embodiment, as an example, one nozzle 120 is used, and a single continuous wire 70 is wound in sequence around the teeth 54 by a single nozzle method. Fig. 14 is a diagram of the winding process in the second embodiment, and Table 2 is a process chart showing the winding order in the winding process in the second embodiment.

[0121] In the winding process in the second embodiment, the winding 70 is wound in the following order of steps 1 to 12. In the drawing, the circled numbers 1 to 12 indicate the order in which the multiple coil portions 78 are formed.

[0122] (First Step) In the first step, the winding 70 is wound counterclockwise from one axial side Z2 of the core 50 to the first tooth portion 54U1 an integer number of turns when viewed from the axial direction to form the first coil portion 78U1, and then led out to the one axial side Z2 of the core 50.

[0123] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the fourth coil portion 54U2 to form a first crossover wire 84U1-U2.

[0124] (Second step) In the second step, the winding 70 is wound counterclockwise from one axial side Z2 of the core 50 to the fourth tooth portion 54U2 an integer number of turns when viewed from the axial direction to form the fourth coil portion 78U2, and then led out to the one axial side Z2 of the core 50.

[0125] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the seventh coil portion 54U3 to form a fourth crossover wire 84U2-U3.

[0126] (Third Step) In the third step, the winding 70 is wound counterclockwise from one axial side Z2 of the core 50 to the seventh tooth portion 54U3 an integer number of turns when viewed from the axial direction to form the seventh coil portion 78U3, and then led out to the one axial side Z2 of the core 50.

[0127] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the tenth coil portion 54U4 to form a seventh crossover wire 84U3-U4.

[0128] (Fourth step) In the fourth step, the winding 70 is wound counterclockwise from one axial side Z2 of the core 50 to the tenth tooth portion 54U4 an integer number of turns when viewed from the axial direction to form the tenth coil portion 78U4, and then led out to the one axial side Z2 of the core 50.

[0129] Thereafter, the winding 70 is returned from one axial side Z2 of the core 50 to between the tenth teeth portion 54U4 and the eleventh teeth portion 54V4 and wired across the eleventh coil portion 54V4, and the second power input line 82U4-V4 is formed by a continuous wire.

[0130] (5th step) In the fifth step, the winding 70 is wound counterclockwise from one axial side Z2 of the core 50 to the eleventh tooth portion 54V4 an integer number of turns when viewed from the axial direction to form the eleventh coil portion 78V4, and then led out to the one axial side Z2 of the core 50.

[0131] Thereafter, the winding 70 is routed from one axial side Z2 to the other circumferential side R2 across the eighth coil portion 54V3 to form an eighth jumper wire 84V4-V3.

[0132] (Sixth step) In the sixth step, the winding 70 is wound counterclockwise from one axial side Z2 of the core 50 to the eighth tooth portion 54V3 an integer number of turns when viewed from the axial direction to form the eighth coil portion 78V3, and then led out to the one axial side Z2 of the core 50.

[0133] Thereafter, the winding 70 is routed from one axial side Z2 to the other circumferential side R2 across the fifth coil portion 54V2 to form a fifth jumper 84V3-V2.

[0134] (Seventh step) In the seventh step, the winding 70 is wound counterclockwise from one axial side Z2 of the core 50 to the fifth tooth portion 54V2 an integer number of turns when viewed from the axial direction to form the fifth coil portion 78V2, and then led out to the one axial side Z2 of the core 50.

[0135] Thereafter, the winding 70 is routed from one axial side Z2 to the other circumferential side R2 across the second coil portion 54V1 to form a second jumper 84V2-V1.

[0136] (Step 8) In the eighth step, the winding 70 is wound counterclockwise from one axial side Z2 of the core 50 to the second tooth portion 54V1 an integer number of turns when viewed from the axial direction to form the second coil portion 78V1, and then led out to the one axial side Z2 of the core 50.

[0137] Thereafter, the winding 70 is returned from one axial side Z2 of the core 50 to between the second teeth portion 54V1 and the third teeth portion 54W1 and wired across the third coil portion 54W1, and the first power input line 82V1-W1 is formed by a continuous wire.

[0138] (9th step) In the ninth step, the winding 70 is wound counterclockwise from one axial side Z2 of the core 50 to the third tooth portion 54W1 an integer number of turns when viewed from the axial direction to form the third coil portion 78W1, and then led out to the one axial side Z2 of the core 50.

[0139] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the sixth coil portion 54W2 to form a third jumper 84W1-W2.

[0140] (Step 10) In the tenth step, the winding 70 is wound counterclockwise from one axial side Z2 of the core 50 to the sixth tooth portion 54W2 an integer number of turns when viewed from the axial direction to form the sixth coil portion 78W2, and then led out to the one axial side Z2 of the core 50.

[0141] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the ninth coil portion 54W3 to form a sixth jumper 84W2-W3.

[0142] (Step 11) In the 11th step, the winding 70 is wound counterclockwise from one axial side Z2 of the core 50 to the ninth tooth portion 54W3 an integer number of turns when viewed from the axial direction to form the ninth coil portion 78W3, and then led out to the one axial side Z2 of the core 50.

[0143] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the twelfth coil portion 54W4, forming a ninth crossover wire 84W3-W4.

[0144] (Step 12) In the 12th step, the winding 70 is wound counterclockwise from one axial side Z2 of the core 50 to the 12th tooth portion 54W4 an integer number of turns when viewed from the axial direction to form the 12th coil portion 78W4, and then led out to the one axial side Z2 of the core 50.

[0145] Thereafter, the winding 70 is routed over the winding-start end 82A of the winding 70 on one axial side Z2 of the core 50, and a third power input line 82W4-U1 is formed by a wiring process.

[0146] [Table 2]

[0147] In the second embodiment, a four-series delta connection is formed in the above manner. According to the winding process in the second embodiment, a connection configuration of a plurality of coil portions 78 can be obtained in the same manner as in the first embodiment.

[0148] Each of the multiple power input lines 82 is led out from between adjacent teeth portions 54. Each of the multiple first direction crossover wires is wired across two teeth portions 54, and each of the multiple second direction crossover wires is wired across 2 × 2 teeth portions 54.

[0149] The first power input line 82V1-W1, the second power input line 82U2-V2, and the third power input line 82W4-U1 are arranged on one axial side Z2 of the core 50. The third power input line 82W4-U1 has a connection portion 90 that connects the winding start end 82A and the winding end end of the wire 70 together.

[0150] In addition, the first crossover wire 84U1-U2, the second crossover wire 84V2-V1, the third crossover wire 84W1-W2, the fourth crossover wire 84U2-U3, the fifth crossover wire 84V3-V2, the sixth crossover wire 84W2-W3, the seventh crossover wire 84U3-U4, the eighth crossover wire 84V4-V3, and the ninth crossover wire 84W3-W4 are arranged on one axial side Z2 of the core 50.

[0151] In addition, in the winding process in the second embodiment, of the multiple coil sections 78, the U-phase coil sections U1 to U4 and the W-phase coil sections W1 to W4 are wound by moving the nozzle 120 to one circumferential side R1 of the core 50, and the V-phase coil sections V1 to V4 are wound by moving the nozzle 120 to the other circumferential side R2 of the core 50.

[0152] After the winding process, for example, each of the split cores 56 is cut off from the temporary joint molding runner 106 and connected in an annular shape with the teeth portions 54 facing radially inward.

[0153] (winding shaping process, wire connection process and assembly process) In the second embodiment, the winding shaping process, the wire connection process, and the assembly process are similar to those in the first embodiment. In the second embodiment of the method for manufacturing the rotating electric machine 10, the rotating electric machine 10 (see FIG. 1) is manufactured in the above-described manner.

[0154] (Action and Effects) In the second embodiment described above, the same functions and effects as those of the first embodiment can be obtained with respect to the same configuration and method as those of the first embodiment.

[0155] 14, in the winding process in the second embodiment, the nozzle 120 moves to one circumferential side R1 of the core 50 to wind the teeth portions 54 of two phases out of the U, V, and W phases, and moves to the other circumferential side R2 of the core 50 to wind the teeth portions 54 of one phase out of the U, V, and W phases, thereby forming a plurality of coil portions 78. As a result, it becomes possible to wind the winding 70 around the plurality of teeth portions 54 with a continuous wire, thereby improving productivity.

[0156] Moreover, the multiple power input lines 82 are arranged on one axial side Z2 of the core 50, and the multiple crossover lines 84 are arranged on the one axial side Z2 of the core 50. Therefore, the space on the other axial side Z1 can be minimized.

[0157] In particular, the rotating electric machine 10 is an inner rotor type brushless motor in which multiple teeth 54 extend radially inward of the core 50, and according to the second embodiment, it is possible to realize a small, high-output, and low-cost inner rotor type brushless motor.

[0158] Moreover, each of the multiple power input lines 82 is led out from between adjacent teeth portions 54. Therefore, while a sufficient gap is ensured between both ends of the jumper wire 84, the gap between both ends of the power input line is narrowed, which makes it possible to prevent the jumper wires 84 between the coil portions 78 and the power input lines 82 from becoming entangled in a complicated manner.

[0159] Moreover, each of the multiple jumper wires 84 is wired across two or 2 × 2 tooth portions 54. Therefore, the distance between both ends of the power input wire 82 and the distance between both ends of the jumper wire 84 are sufficiently secured, which also makes it possible to prevent the jumper wires 84 between the coil portions 78 and the power input wires 82 from becoming entangled in a complicated manner.

[0160] Moreover, the winding 70 is formed of a single continuous wire. Therefore, the winding 70 can be wound around a plurality of teeth 54 using one nozzle 120, and the configuration of the winding device including the nozzle 120 can be simplified. This also contributes to keeping manufacturing costs down.

[0161] (Modification) Next, a modification of the second embodiment will be described.

[0162] The stator 20 according to the first embodiment has m=4 and n=1 as an example of an m-series, n-parallel delta connection where m is a natural number of 2 or more, but the manufacturing method of the stator 20 according to the first embodiment is applicable to all three-phase brushless motors in which the number of slots, teeth portions 54, and coil portions 78 is a multiple of 3 and is 6 or more. For example, the numbers of slots, teeth portions 54, and coil portions 78 can be 6 (m=2 and n=1), 9 (m=3 and n=1), 12 (m=4 and n=1), 15 (m=5 and n=1), 18 (m=6 and n=1), 21 (m=7 and n=1), 24 (m=8 and n=1), 27 (m=9 and n=1), 30 (m=10 and n=1), 33 (m=11 and n=1), 36 (m=12 and n=1), etc.

[0163] In the second embodiment, the same modified examples as those in the first embodiment can be adopted for the same configurations and methods as those in the first embodiment.

[0164] In the winding process according to the second embodiment, the V-phase coil portions V1 to V4 of the U-phase, V-phase, and W-phase coils are wound by moving the nozzle 120 to the other circumferential side R2 of the core 50, but the winding process according to the present embodiment is not limited to this. For example, the U-phase coil portions U1 to U4 or the W-phase coil portions W1 to W4 may be wound by moving the nozzle 120 to the other circumferential side R2 of the core 50. Even in this case, it is possible to wind the winding 70 around the multiple teeth portions 54 using a continuous wire, thereby improving productivity.

[0165] [Third embodiment of the manufacturing method for a rotating electric machine] Next, a third embodiment of the method for manufacturing the rotating electric machine 10 according to an embodiment of the present invention will be described.

[0166] In the third embodiment of the method for manufacturing the rotating electric machine 10, the core setting process is similar to that in the first embodiment of the method for manufacturing the rotating electric machine 10. On the other hand, in the third embodiment of the method for manufacturing the rotating electric machine 10, the following changes are made to the first embodiment of the method for manufacturing the rotating electric machine 10.

[0167] (Winding connection configuration) Fig. 15 is a connection diagram of the windings 70 of the stator 20 in the third embodiment. As shown in Fig. 15, in the third embodiment of the manufacturing method for the rotating electric machine 10, as an example of an m-series-n-parallel delta connection where m is a natural number equal to or greater than 2 and n is a natural number, the multiple coil portions 78 are delta connected in a 2-series-2-parallel manner. That is, in the third embodiment of the manufacturing method for the rotating electric machine 10, m=2 and n=2, and the number of slots, teeth portions 54, and coil portions 78 is 12.

[0168] Specifically, the wiring configuration of the coil sections 78 delta-connected in a 2-series, 2-parallel configuration is such that the four coil sections 78 of the same phase are connected in series in pairs (m=2) to form two (n=2) coil arrays 78A, and these two coil arrays 78A are connected in series. Furthermore, three coil groups 80 each consisting of the four coil sections 78 of the same phase are connected in a delta shape (triangle).

[0169] (Winding process) In the winding process of the third embodiment, as in the first embodiment, one nozzle 120 (see FIG. 4) is used as an example, and the winding 70, which is a single continuous wire, is wound sequentially around the teeth portions 54 by the single nozzle method. FIG 16 is a diagram of the winding process of the third embodiment, and Table 3 is a process chart showing the winding order of the winding process of the third embodiment.

[0170] The winding 70 has six power input wires 82 that connect the coil portions 78 of different phases to each other. The six power input wires 82 each have a first connection portion C1 to a sixth connection portion A2 that are connected in a connection step described below. In the following explanation of each step, the six power input wires 82 will be referred to as follows in order on one circumferential side R1 of the core 50, corresponding to the notations U1 to W4 in the figure. (1) First power input line 82V1-W1 (2) Second power input line 82U2-V2 (3) 3rd power input line 82W2-U3 (4) 4th power input line 82V3-W3 (5) 5th power input line 82U4-V4 (6) 6th power input line 82W4-U1

[0171] Further, the winding 70 has six crossover wires 84 that connect the coil portions 78 of the same phase to each other. In the following explanation of each process, the six crossover wires 84 will be referred to as follows in order from one circumferential side R1 of the core 50, corresponding to the notations U1 to W4 in the figure. (1) First crossover 84U1-U2 (2) Second crossover 84V2-V1 (3) Third crossover 84W1-W2 (4) 4th crossover 84U3-U4 (5) 5th crossover 84V4-V3 (6) 6th crossover 84W3-W4

[0172] Furthermore, among the crossover wires 84, the first crossover wire 84U1-U2, the third crossover wire 84W1-W2, the fourth crossover wire 84U3-U4, and the sixth crossover wire 84W3-W4 correspond to the "first direction crossover wire" in the present invention, and the second crossover wire 84V2-V1 and the fourth crossover wire 84U3-U4 correspond to the "second direction crossover wire" in the present invention.

[0173] In the winding process in the third embodiment, the winding 70 is wound in the following order of steps 1 to 12. In the drawing, circled numbers 1 to 12 indicate the order in which the multiple coil portions 78 are formed.

[0174] (First Step) In a first step, the winding 70 is wound around the first teeth portion 54U1 from one axial side Z2 of the core 50. Also, the winding 70 is wound clockwise as viewed in the axial direction an integer number of turns to form the first coil portion 78U1.

[0175] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the fourth coil portion 54U2 to form a first crossover wire 84U1-U2.

[0176] (Second step) In the second step, the winding 70 is wound from one axial side Z2 of the core 50 to the fourth tooth portion 54U2 an integer number of turns in a clockwise direction as viewed from the axial direction to form the fourth coil portion 78U2, and then led out to the one axial side Z2 of the core 50.

[0177] Thereafter, the winding 70 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the second power input line 82U2-V2 is formed by a continuous wire across the fifth coil portion 54V2.

[0178] (Third Step) In a third step, the winding 70 is wound around the fifth tooth portion 54V2 from one axial side Z2 of the core 50. Also, the winding 70 is wound clockwise as viewed in the axial direction an integer number of turns to form a fifth coil portion 78V2.

[0179] Thereafter, the winding 70 is routed from one axial side Z2 to the other circumferential side R2 across the second coil portion 54V1 to form a second jumper 84V2-V1.

[0180] (Fourth step) In the fourth step, the winding 70 is wound from one axial side Z2 of the core 50 to the second tooth portion 54V1 an integer number of turns in a clockwise direction when viewed from the axial direction to form the second coil portion 78V1, and then led out to the one axial side Z2 of the core 50.

[0181] Thereafter, the winding 70 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the first power input line 82V1-W1 across the third coil portion 54W1 is formed by a continuous wire.

[0182] (5th step) In a fifth step, the winding 70 is wound around the third tooth portion 54W1 from one axial side Z2 of the core 50. Also, the winding 70 is wound clockwise as viewed in the axial direction an integer number of turns to form the third coil portion 78W1.

[0183] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the sixth coil portion 54W2 to form a third jumper 84W1-W2.

[0184] (Sixth step) In the sixth step, the winding 70 is wound from one axial side Z2 of the core 50 to the sixth tooth portion 54W2 an integer number of turns in a clockwise direction when viewed from the axial direction to form the sixth coil portion 78W2, and then led out to the one axial side Z2 of the core 50.

[0185] Thereafter, the winding 70 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the third power input line 82W2-U3 is formed by a continuous wire across the seventh coil portion 54U3.

[0186] (Seventh step) In a seventh step, the winding 70 is wound around the seventh tooth portion 54U3 from one axial side Z2 of the core 50. Also, the winding 70 is wound clockwise as viewed in the axial direction an integer number of turns to form a seventh coil portion 78U3.

[0187] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the tenth coil portion 54U4 to form a fourth crossover wire 84U3-U4.

[0188] (Step 8) In the eighth step, the winding 70 is wound from one axial side Z2 of the core 50 to the tenth tooth portion 54U4 an integer number of turns in a clockwise direction as viewed from the axial direction to form the tenth coil portion 78U4, and then led out to the one axial side Z2 of the core 50.

[0189] Thereafter, the winding 70 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the fifth power input line 82U4-V4 is formed by a continuous wire across the eleventh coil portion 54V4.

[0190] (9th step) In a ninth step, the winding 70 is wound around the eleventh tooth portion 54V4 from one axial side Z2 of the core 50. Also, the winding is wound clockwise as viewed in the axial direction an integer number of turns to form an eleventh coil portion 78V4.

[0191] Thereafter, the winding 70 is routed from one axial side Z2 to the other circumferential side R2 across the eighth coil portion 54V3 to form a fifth jumper 84V4-V3.

[0192] (Step 10) In the tenth step, the winding 70 is wound an integer number of turns clockwise from one axial side Z2 of the core 50 to the eighth tooth portion 54V3 when viewed from the axial direction to form the eighth coil portion 78V3, and then led out to the one axial side Z2 of the core 50.

[0193] Thereafter, the winding 70 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the fourth power input line 82V3-W3 is formed by a continuous wire across the ninth coil portion 54W3.

[0194] (Step 11) In an eleventh step, the winding 70 is wound around the ninth tooth portion 54W3 from one axial side Z2 of the core 50. Also, the winding is wound clockwise as viewed in the axial direction an integer number of turns to form a ninth coil portion 78W3.

[0195] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the twelfth coil portion 54W4 to form a sixth jumper 84W3-W4.

[0196] (Step 12) In the 12th step, the winding 70 is wound from one axial side Z2 of the core 50 to the 12th tooth portion 54W4 an integer number of turns in a clockwise direction when viewed from the axial direction to form the 12th coil portion 78W4, and then led out to the one axial side Z2 of the core 50.

[0197] Thereafter, the winding 70 is wired from one axial side Z2 of the core 50 to one circumferential side R1 to the winding starting end 82A of the winding 70, and a connection portion 90 is formed by a wiring process described below, thereby forming the sixth power input line 82W4-U1.

[0198] [Table 3]

[0199] In the third embodiment, a 2-series, 2-parallel delta connection is formed in the above manner.

[0200] As shown in Figures 16 and 17, the first power input line 82V1-W1 connects the end of the second coil portion 78V1 to the start of the third coil portion 78W1, the second power input line 82U2-V2 connects the end of the fourth coil portion 78U2 to the start of the fifth coil portion 78V2, and the third power input line 82W2-U3 connects the end of the sixth coil portion 78W2 to the start of the seventh coil portion 78U3. The fourth power input line 82V3-W3 connects the end of the eighth coil section 78V3 to the beginning of the ninth coil section 78W3, the fifth power input line 82U4-V4 connects the end of the tenth coil section 78U4 to the beginning of the eleventh coil section 78V4, and the sixth power input line 82W4-U1 connects the end of the twelfth coil section 78W4 to the beginning of the first coil section 78U1 through a wiring process described below.

[0201] The first power input line 82V1-W1, the second power input line 82U2-V2, the third power input line 82W2-U3, the fourth power input line 82V3-W3, the fifth power input line 82U4-V4, and the sixth power input line 82W4-U1 are continuously wired. The first power input line 82V1-W1, the second power input line 82U2-V2, the third power input line 82W2-U3, the fourth power input line 82V3-W3, the fifth power input line 82U4-V4, and the sixth power input line 82W4-U1 are disposed on one axial side Z2 of the core 50. The sixth power input line 82W4-U1 has a connection portion 90 that connects the winding start end 82A and the winding end end of the winding 70 together by a wiring connection process described later.

[0202] The first crossover wire 84U1-U2 connects the end of the first coil section 78U1 to the start of the fourth coil section 78U2, the second crossover wire 84V2-V1 connects the end of the fifth coil section 78V2 to the start of the second coil section 78V1, the third crossover wire 84W1-W2 connects the end of the third coil section 78W1 to the start of the sixth coil section 78W2, the fourth crossover wire 84U3-U4 connects the end of the seventh coil section 78U3 to the start of the tenth coil section 78U4, the fifth crossover wire 84V4-V3 connects the end of the eleventh coil section 78V4 to the start of the eighth coil section 78V3, and the sixth crossover wire 84W3-W4 connects the end of the ninth coil section 78W3 to the start of the twelfth coil section 78W4.

[0203] The first crossover wire 84U1-U2, the second crossover wire 84V2-V1, the third crossover wire 84W1-W2, the fourth crossover wire 84U3-U4, the fifth crossover wire 84V4-V3, and the sixth crossover wire 84W3-W4 are arranged on one axial side Z2 of the core 50.

[0204] Furthermore, in the winding process of the third embodiment, of the multiple coil sections 78, the U-phase coil sections U1 to U4 and the W-phase coil sections W1 to W4 are wound by moving the nozzle 120 to one circumferential side R1 of the core 50, and the V-phase coil sections V1 to V4 are wound by moving the nozzle 120 to the other circumferential side R2 of the core 50.

[0205] After the winding process, for example, each of the split cores 56 is cut off from the temporary joint molding runner 106 and connected in an annular shape with the teeth portions 54 facing radially inward.

[0206] (Winding shaping process) In the third embodiment, the multiple connection terminals 98 are changed from those in the first embodiment to a first connection terminal 98C, a second connection terminal 98B, a third connection terminal 98A, a fourth connection terminal 98C2, a fifth connection terminal 98B2, and a sixth connection terminal 98A2. The first connection terminal 98C is arranged between the second coil portion 78V1 and the third coil portion 78W1, the second connection terminal 98B is arranged between the fourth coil portion 78U2 and the fifth coil portion 78V2, the third connection terminal 98A is arranged between the sixth coil portion 78W2 and the seventh coil portion 78U3, the fourth connection terminal 98C2 is arranged between the eighth coil portion 78V3 and the ninth coil portion 78W3, the fifth connection terminal 98B2 is arranged between the tenth coil portion 78U4 and the eleventh coil portion 78V4, and the sixth connection terminal 98A2 is arranged between the first coil portion 78U1 and the twelfth coil portion 78W4.

[0207] In the winding shaping process, similarly to the first embodiment, the first power input line 82V1-W1 is shaped so that the first connection portion C1 of the first power input line 82V1-W1 moves to the first connection terminal 98C. The first connection terminal 98C is, for example, hook-shaped, and the first connection portion C1 is engaged with the first connection terminal 98C.

[0208] Similarly, the second power input line 82U2-V2 is shaped so that the second connection portion B1 of the second power input line 82U2-V2 moves to the second connection terminal 98B. The second connection terminal 98B is, for example, hook-shaped, and the second connection portion B1 is engaged with the second connection terminal 98B.

[0209] Similarly, the third power input line 82W2-U3 is shaped so that the third connection portion A2 of the third power input line 82W2-U3 moves to the third connection terminal 98A. The third connection terminal 98A is, for example, hook-shaped, and the third connection portion A1 is engaged with the third connection terminal 98A.

[0210] Similarly, the fourth power input line 82V3-W3 is shaped so that the fourth connection portion C2 of the fourth power input line 82V3-W3 moves to the fourth connection terminal 98C2. The fourth connection terminal 98C2 is, for example, hook-shaped, and the fourth connection portion C2 is engaged with the fourth connection terminal 98C2.

[0211] Similarly, the fifth power input line 82U4-V4 is shaped so that the fifth connection portion B2 of the fifth power input line 82U4-V4 moves to the fifth connection terminal 98B2. The fifth connection terminal 98B2 is, for example, hook-shaped, and the fifth connection portion B2 is engaged with the fifth connection terminal 98B2.

[0212] Similarly, the sixth power input line 82W4-U1 is shaped so that the sixth connection portion A1 of the sixth power input line 82W4-U1 formed in a connection process described later moves to the sixth connection terminal 98A2. The sixth connection terminal 98A2 is, for example, hook-shaped, and the sixth connection portion A2 is engaged with the sixth connection terminal 98A2.

[0213] (Wiring process) In the connection step, the first connection terminal 98C and the first connection portion C1 are connected by, for example, fusing. Similarly, the second connection terminal 98B and the second connection portion B1 are connected by, for example, fusing, the third connection terminal 98A and the third connection portion A1 are connected by, for example, fusing, the fourth connection terminal 98C2 and the fourth connection portion C2 are connected by, for example, fusing, the fifth connection terminal 98B2 and the fifth connection portion B2 are connected by, for example, fusing, and the sixth connection terminal 98A2 and the sixth connection portion A2 are connected by, for example, fusing. Thus, in the wiring process, the first power input line 82V1-W1 to the fifth power input line 82U4-V4 are connected one by one to the first wiring terminal 98C to the fifth wiring terminal 98B2, and the winding start end 82A of the winding 70 and the winding end 82B of the winding 70 are each connected to the sixth wiring terminal 98A2.

[0214] As in the first embodiment, the first connection terminal 98C is engaged with the first connection portion C1 of the first power input line 82V1-W1, and the first power input line 82V1-W1 is connected thereto by fusing. Similarly, the second power input line 82U2-V2 to the fifth power input line 82U4-V4 are also connected thereto.

[0215] As in the first embodiment, the winding start end 82A of the winding 70 and the winding end 82B of the winding 70 are engaged with the sixth connection terminal 98A2, and a connection portion 90 is formed by a fusing process. This forms the sixth power input line 82W4-U1, and at the same time, the sixth power input line 82W4-U1 is connected to the sixth connection terminal 98A2.

[0216] (Assembly process) In the third embodiment, the assembly process is similar to that in the first embodiment. In the third embodiment of the method for manufacturing the rotating electric machine 10, the rotating electric machine 10 (see FIG. 1) is manufactured in the above-described manner.

[0217] (Winding configuration) Each of the multiple power input lines 82 is wired across two teeth portions 54. Each of the multiple first direction crossover wires is wired across 2 × 2 teeth portions 54, and each of the multiple second direction crossover wires is wired across two teeth portions 54.

[0218] The winding 70 is formed of a single continuous wire, and any one of the multiple power input lines 82 has a connection portion 90 that connects ends of the winding 70. The multiple power input lines 82 are connected to connection terminals 98 one by one.

[0219] (Action and Effects) In the third embodiment described above, the same functions and effects as those of the first embodiment can be obtained with respect to the same configuration and method as those of the first embodiment.

[0220] 16, in the winding process in the third embodiment, the nozzle 120 moves to one circumferential side R1 of the core 50 to wind the teeth portions 54 of two phases out of the U, V, and W phases, and moves to the other circumferential side R2 of the core 50 to wind the teeth portions 54 of one phase out of the U, V, and W phases, thereby forming a plurality of coil portions 78. As a result, it becomes possible to wind the winding 70 around the plurality of teeth portions 54 with a continuous wire, thereby improving productivity.

[0221] Moreover, the multiple power input lines 82 are arranged on one axial side Z2 of the core 50, and the multiple crossover lines 84 are arranged on the one axial side Z2 of the core 50. Therefore, the space on the other axial side Z1 can be minimized.

[0222] In particular, the rotating electric machine 10 is an inner rotor type brushless motor in which multiple teeth 54 extend radially inward of the core 50, and according to the third embodiment, it is possible to realize a small, high-output, and low-cost inner rotor type brushless motor.

[0223] Furthermore, each of the multiple power input lines 82 is wired across two teeth portions 54. Therefore, the distance between both ends of the power input lines 82 and the distance between both ends of the jumper lines 84 are sufficiently secured, which also makes it possible to prevent the jumper lines 84 between the coil portions 78 and the power input lines 82 from becoming entangled in a complicated manner.

[0224] Moreover, each of the multiple jumper wires 84 is wired across two or 2 × 2 tooth portions 54. Therefore, the distance between both ends of the power input wire 82 and the distance between both ends of the jumper wire 84 are sufficiently secured, which also makes it possible to prevent the jumper wires 84 between the coil portions 78 and the power input wires 82 from becoming entangled in a complicated manner.

[0225] (Modification) Next, a modification of the third embodiment will be described.

[0226] As an example, the winding shaping process is performed in a state where the multiple connection terminals 98 are assembled to the core 50, but the winding shaping process may be performed in a state before the multiple connection terminals 98 are assembled to the core 50. In this case, in the wiring process, after the multiple connection terminals 98 are assembled to the core 50, the multiple power input lines 82 are connected to the multiple connection terminals 98.

[0227] In addition, the stator 20 is an inner rotor type stator 20 in which the multiple teeth portions 54 extend radially inward from the core 50, but it may also be an outer rotor type stator 20 in which the multiple teeth portions 54 extend radially outward from the core 50.

[0228] In addition, the stator 20 according to the third embodiment has m=2 and n=2 as an example of an m-series, n-parallel delta connection where m is a natural number of 2 or more and n is a natural number, but the manufacturing method of the stator 20 according to the third embodiment is applicable to all three-phase brushless motors in which the number of slots, teeth portions 54, and coil portions 78 is a multiple of 6 and is 12 or more. For example, the number of slots, teeth portions 54, and coil portions 78 can be 12 (m=2 and n=2), 18 (m=2 and n=3 or m=3 and n=2), 24 (m=4 and n=2 or m=2 and n=4), 30 (m=2 and n=5 or m=5 and n=2), 36 (m=2 and n=6, m=3 and n=4, m=4 and n=3, or m=6 and n=2), etc.

[0229] In the third embodiment, the multiple connection terminals 98 are changed to the first connection terminal 98C to the sixth connection terminal 98A2 from the first embodiment, but may be the first connection terminal 98C to the third connection terminal 98A as in the first embodiment. In that case, the fourth connection portion C2 to the sixth connection portion A2 are connected to the first connection terminal 98C to the third connection terminal 98A, respectively, together with the first connection portion C1 to the third connection portion A1.

[0230] In the third embodiment, the same modified examples as those in the first embodiment can be adopted for the same configurations and methods as those in the first embodiment.

[0231] In the winding process according to the third embodiment, the V-phase coil portions V1 to V4 of the U-phase, V-phase, and W-phase coils are wound by moving the nozzle 120 to the other circumferential side R2 of the core 50, but the winding process according to the present embodiment is not limited to this. For example, the U-phase coil portions U1 to U4 or the W-phase coil portions W1 to W4 may be wound by moving the nozzle 120 to the other circumferential side R2 of the core 50. Even in this case, it is possible to wind the winding 70 around the multiple teeth portions 54 using a continuous wire, thereby improving productivity.

[0232] [Fourth embodiment of the manufacturing method for a rotating electric machine] Next, a fourth embodiment of the method for manufacturing the rotating electric machine 10 according to an embodiment of the present invention will be described.

[0233] The fourth embodiment of the method for manufacturing the rotating electric machine 10 differs from the third embodiment of the method for manufacturing the rotating electric machine 10 described above in that the winding winding step is changed as follows.

[0234] (Core set process) Fig. 18 is a diagram showing a core setting step in the fourth embodiment. As shown in Fig. 18, in the core setting step in the fourth embodiment, as an example, the multiple split cores 56 are held by a temporary connection molding runner 106 molded integrally with the insulator 62. The temporary connection molding runner 106 extends from the surfaces of the multiple split cores 56 opposite the teeth portions 54, and each is connected in a substantially straight line. At this time, the multiple split cores 56 are in a state where the tip portions of the multiple teeth portions 54 are aligned in a straight line and connected to each other.

[0235] In the fourth embodiment, as an example, two nozzles 120, that is, a first nozzle 122 and a second nozzle 124, are used. The first nozzle 122 is disposed opposite the split core 56 disposed at one end of the temporary coupling molding runner 106. As will be described later, when the winding 70 is wound in sequence around the multiple teeth portions 54, the first nozzle 122 moves so as to sequentially face the multiple teeth portions 54 attached to the temporary coupling molding runner 106.

[0236] The second nozzle 124 is disposed opposite a split core 56 that is half the total number of split cores 56 away from the split core 56 disposed at one end of the temporary coupling molding runner 106. As with the first nozzle 122, when the winding 70 is wound in sequence around the multiple teeth 54, as described below, the second nozzle 124 moves in sequence to face the multiple teeth 54 attached to the temporary coupling molding runner 106.

[0237] (Winding process) 18, in the winding process in the fourth embodiment, as an example, a first nozzle 122 and a second nozzle 124 are used to sequentially wind a first winding 72 and a second winding 74, which are two continuous wires, around a plurality of teeth portions 54 using a double nozzle method. Fig. 19 is a diagram showing the winding process in the fourth embodiment, and Table 4 is a process chart showing the winding order in the winding process in the fourth embodiment.

[0238] In the winding process in the fourth embodiment, the first winding 72 and the second winding 74 are wound in the following order of steps 1 to 6. In the drawing, the circled numbers 1 to 6 indicate the order in which the multiple coil portions 78 are formed.

[0239] (1st Step-1) In a first step, the first winding 72 is wound around the first teeth portion 54U1 from one axial side Z2 of the core 50 by a first nozzle 122 (see FIG. 18). The first coil portion 78U1 is also formed by winding the first winding 72 an integer number of turns in a clockwise direction as viewed in the axial direction.

[0240] Thereafter, the first winding 72 is wired from one axial side Z2 to one circumferential side R1 across the fourth coil portion 54U2 to form a first crossover wire 84U1-U2.

[0241] (1st Step-2) Similarly, in the first step, the second winding 74 is wound around the seventh teeth portion 54U3 from one axial side Z2 of the core 50 by the second nozzle 124 (see FIG. 18). The second winding 74 is also wound clockwise as viewed in the axial direction by an integer number of turns to form the seventh coil portion 78U3.

[0242] Thereafter, the second winding 74 is wired from one axial side Z2 to one circumferential side R1 across the tenth coil portion 54U4 to form a fourth crossover 84U3-U4.

[0243] (2nd Step-1) In a second step, the first winding 72 is wound an integer number of turns clockwise from one axial side Z2 of the core 50 to the fourth teeth portion 54U2 by the first nozzle 122 (see Figure 18) when viewed from the axial direction to form the fourth coil portion 78U2, and then led out to the one axial side Z2 of the core 50.

[0244] Thereafter, the first winding 72 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the second power input line 82U2-V2 is formed by a continuous wire across the fifth coil portion 54V2.

[0245] (2nd Step-2) Similarly, in the second step, the second winding 74 is wound an integer number of turns clockwise from one axial side Z2 of the core 50 to the tenth tooth portion 54U4 by the second nozzle 124 (see FIG. 18) when viewed from the axial direction to form the tenth coil portion 78U4, and then led out to the one axial side Z2 of the core 50.

[0246] Thereafter, the second winding 74 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the fifth power input line 82U4-V4 is formed by a continuous wire across the eleventh coil portion 54V4.

[0247] (Third Step-1) In a third step, the first winding 72 is wound around the fifth teeth portion 54V2 from one axial side Z2 of the core 50 by the first nozzle 122 (see FIG. 18). The first winding 72 is also wound clockwise as viewed in the axial direction by an integer number of turns to form the fifth coil portion 78V2.

[0248] Thereafter, the first winding 72 is routed from one axial side Z2 to the other circumferential side R2 across the second coil portion 54V1 to form a second jumper 84V2-V1.

[0249] (Third Step-2) Similarly, in a third step, the second winding 74 is wound around the eleventh tooth portion 54V4 from one axial side Z2 of the core 50 by the second nozzle 124 (see FIG. 18). Also, the second winding 74 is wound clockwise as viewed in the axial direction by an integer number of turns to form the eleventh coil portion 78V4.

[0250] Thereafter, the second winding 74 is routed from one axial side Z2 to the other circumferential side R2 across the eighth coil portion 54V3 to form a fifth jumper 84V4-V3.

[0251] (4th Step-1) In a fourth step, the first winding 72 is wound an integer number of turns clockwise from one axial side Z2 of the core 50 to the second teeth portion 54V1 when viewed from the axial direction by the first nozzle 122 (see Figure 18) to form the second coil portion 78V1, and then led out to the one axial side Z2 of the core 50.

[0252] Thereafter, the first winding 72 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the first power input line 82V1-W1 across the third coil portion 54W1 is formed by a continuous wire.

[0253] (4th Step-2) Similarly, in the fourth step, the second winding 74 is wound an integer number of turns clockwise from one axial side Z2 of the core 50 to the eighth tooth portion 54V3 by the second nozzle 124 (see Figure 18) when viewed from the axial direction to form the eighth coil portion 78V3, and then led out to the one axial side Z2 of the core 50.

[0254] Thereafter, the second winding 74 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the fourth power input line 82V3-W3 is formed by a continuous wire across the ninth coil portion 54W3.

[0255] (5th Step-1) In a fifth step, the first winding 72 is wound around the third teeth portion 54W1 from one axial side Z2 of the core 50 by the first nozzle 122 (see FIG. 18). Also, the first winding 72 is wound clockwise as viewed in the axial direction by an integer number of turns to form the third coil portion 78W1.

[0256] Thereafter, the first winding 72 is routed from one axial side Z2 to one circumferential side R1 across the sixth coil portion 54W2 to form a third jumper 84W1-W2.

[0257] (5th Step-2) Similarly, in the fifth step, the second winding 74 is wound around the ninth tooth portion 54W3 from one axial side Z2 of the core 50 by the second nozzle 124 (see FIG. 18). The ninth coil portion 78W3 is formed by winding the second winding 74 an integer number of turns in a clockwise direction as viewed in the axial direction.

[0258] Thereafter, the second winding 74 is routed from one axial side Z2 to one circumferential side R1 across the twelfth coil portion 54W4 to form a sixth jumper 84W3-W4.

[0259] (6th Step-1) In a sixth step, the winding 70 is wound an integer number of turns clockwise from one axial side Z2 of the core 50 to the sixth tooth portion 54W2 when viewed from the axial direction by the first nozzle 122 (see Figure 18) to form the sixth coil portion 78W2, and then led out to the one axial side Z2 of the core 50.

[0260] Thereafter, the first winding 72 is wired from one axial side Z2 of the core 50 to one circumferential side R1 to the winding starting end 82E of the second winding 74, and a first connection portion 92 is formed by a wiring process described below, and a third power input line 82W2-U3 is formed.

[0261] (6th Step-2) Similarly, in the sixth step, the second winding 74 is wound an integer number of turns clockwise from one axial side Z2 of the core 50 to the twelfth tooth portion 54W4 by the second nozzle 124 (see FIG. 18) when viewed from the axial direction to form the twelfth coil portion 78W4, and then led out to the one axial side Z2 of the core 50.

[0262] Thereafter, the first winding 72 is wired from one axial side Z2 of the core 50 to one circumferential side R1 to the winding starting end 82C of the first winding 72, and a second connection portion 94 is formed by a wiring process described below, and a sixth power input line 82W4-U1 is formed.

[0263] Then, by forming the first connecting portion 92 and the second connecting portion 94, the first winding 72 and the second winding 74 form a single continuous winding 70.

[0264] [Table 4]

[0265] In the fourth embodiment, a 2-series, 2-parallel delta connection is formed in the above manner. Fig. 20 is a connection configuration diagram of a plurality of coil parts 78 connected by a winding process in the fourth embodiment. According to the winding process in this fourth embodiment, a connection configuration of a plurality of coil parts 78 is obtained similarly to the third embodiment, except that a first connection part 92 and a second connection part 94 are formed instead of one connection part 90 (see Fig. 17).

[0266] (Winding configuration) Each of the multiple power input lines 82 is wired across two teeth portions 54. Each of the multiple first direction crossover wires is wired across 2 × 2 teeth portions 54, and each of the multiple second direction crossover wires is wired across two teeth portions 54.

[0267] The first winding 72 and the second winding 74 are each formed of a single continuous wire, and one of the multiple power input lines 82 has a connection portion connecting a winding end 82F of the second winding 74 and a winding start end 82C of the first winding 72, and one of the power input lines 82 has a connection portion connecting a winding end 82D of the first winding 72 and a winding start end 82E of the second winding 74. The multiple power input lines 82 are connected to connection terminals 98 one by one.

[0268] Additionally, the first power input line 82V1-W1, the second power input line 82U2-V2, the third power input line 82W2-U3, the fourth power input line 82V3-W3, the fifth power input line 82U4-V4, and the sixth power input line 82W4-U1 are disposed on one axial side Z2 of the core 50. The sixth power input line 82W4-U1 has a connection portion that connects the winding start end 82A and the winding end end of the wire 70 together.

[0269] In addition, the first crossover wire 84U1-U2, the second crossover wire 84V2-V1, the third crossover wire 84W1-W2, the fourth crossover wire 84U3-U4, the fifth crossover wire 84V4-V3, and the sixth crossover wire 84W3-W4 are arranged on one axial side Z2 of the core 50.

[0270] The first power input line 82V1-W1, the second power input line 82U2-V2, the third power input line 82W2-U3, the fourth power input line 82V3-W3, the fifth power input line 82U4-V4, and the sixth power input line 82W4-U1 are continuously wired. Also, the first power input line 82V1-W1, the second power input line 82U2-V2, the third power input line 82W2-U3, the fourth power input line 82V3-W3, the fifth power input line 82U4-V4, and the sixth power input line 82W4-U1 are disposed on one axial side Z2 of the core 50. The third power input line 82W2-U3 has a first connection portion 92 connecting the ending end 82D of the first winding 72 and the starting end 82E of the second winding 74, and the sixth power input line 82W4-U1 has a second connection portion 94 connecting the ending end 82F of the second winding 74 and the starting end 82C of the first winding 72.

[0271] Furthermore, in the winding process of the fourth embodiment, of the multiple coil sections 78, the U-phase coil sections U1 to U4 and the W-phase coil sections W1 to W4 are wound by moving the first nozzle 122 and the second nozzle 124 to one circumferential side R1 of the core 50, and the V-phase coil sections V1 to V4 are wound by moving the first nozzle 122 and the second nozzle 124 to the other circumferential side R2 of the core 50.

[0272] After the winding process, for example, each of the split cores 56 is cut off from the temporary joint molding runner 106 and connected in an annular shape with the teeth portions 54 facing radially inward.

[0273] (Winding shaping process) In the fourth embodiment, the multiple connection terminals 98 are, similarly to the third embodiment, a first connection terminal 98C, a second connection terminal 98B, a third connection terminal 98A, a fourth connection terminal 98C2, a fifth connection terminal 98B2, and a sixth connection terminal 98A2.

[0274] In the winding shaping process, similarly to the third embodiment, the first power input line 82V1-W1 is shaped so that the first connection portion C1 of the first power input line 82V1-W1 moves to the first connection terminal 98C. The first connection terminal 98C is, for example, hook-shaped, and the first connection portion C1 is engaged with the first connection terminal 98C.

[0275] Similarly, the second power input line 82U2-V2 is shaped so that the second connection portion B1 of the second power input line 82U2-V2 moves to the second connection terminal 98B. The second connection terminal 98B is, for example, hook-shaped, and the second connection portion B1 is engaged with the second connection terminal 98B.

[0276] Similarly, the third power input line 82W2-U3 is shaped in a connection process described below so that the third connection portion A2 of the third power input line 82W2-U3 moves to the third connection terminal 98A. The third connection terminal 98A is, for example, hook-shaped, and the third connection portion A1 is engaged with the third connection terminal 98A.

[0277] Similarly, the fourth power input line 82V3-W3 is shaped so that the fourth connection portion C2 of the fourth power input line 82V3-W3 moves to the fourth connection terminal 98C2. The fourth connection terminal 98C2 is, for example, hook-shaped, and the fourth connection portion C2 is engaged with the fourth connection terminal 98C2.

[0278] Similarly, the fifth power input line 82U4-V4 is shaped so that the fifth connection portion B2 of the fifth power input line 82U4-V4 moves to the fifth connection terminal 98B2. The fifth connection terminal 98B2 is, for example, hook-shaped, and the fifth connection portion B2 is engaged with the fifth connection terminal 98B2.

[0279] Similarly, the sixth power input line 82W4-U1 is shaped so that the sixth connection portion A1 of the sixth power input line 82W4-U1 formed in a connection process described later moves to the sixth connection terminal 98A2. The sixth connection terminal 98A2 is, for example, hook-shaped, and the sixth connection portion A2 is engaged with the sixth connection terminal 98A2.

[0280] (Wiring process) In the connection step, the first connection terminal 98C and the first connection portion C1 are connected by, for example, fusing. Similarly, the second connection terminal 98B and the second connection portion B1 are connected by, for example, fusing, the third connection terminal 98A and the third connection portion A1 are connected by, for example, fusing, the fourth connection terminal 98C2 and the fourth connection portion C2 are connected by, for example, fusing, the fifth connection terminal 98B2 and the fifth connection portion B2 are connected by, for example, fusing, and the sixth connection terminal 98A2 and the sixth connection portion A2 are connected by, for example, fusing. Thus, in the wiring process, the first power input line 82V1-W1, the second power input line 82U2-V2, the fourth power input line 82V3-W3, and the fifth power input line 82U4-V4 are each connected to the first wiring terminal 98C, the second wiring terminal 98B, the fourth wiring terminal 98C2, and the fifth wiring terminal 98B2, the winding starting end 82E of the second winding 74 and the winding ending end 82D of the first winding 72 are each connected to the third wiring terminal 98A, and the winding starting end 82C of the first winding 72 and the winding ending end 82F of the second winding 74 are each connected to the sixth wiring terminal 98A2.

[0281] The first connection terminal 98C is engaged with the first connection portion C1 of the first power input line 82V1-W1, and is connected to the first power input line 82V1-W1 by fusing. Similarly, the second power input line 82U2-V2, the fourth power input line 82V3-W3, and the fifth power input line 82U4-V4 are also connected to the first connection terminal 98C.

[0282] Additionally, the winding start end 82E of the second winding 74 and the winding end 82D of the first winding 72 are engaged with the third connection terminal 98A, and a connection is formed by fusing. This forms the third power input line 82W2-U3, and at the same time, the third power input line 82W2-U3 is connected to the third connection terminal 98A.

[0283] Furthermore, the winding start end 82C of the first winding 72 and the winding end 82F of the second winding 74 are engaged with the sixth connection terminal 98A2, and a connection is formed by a fusing process. This forms the sixth power input line 82W4-U1, and at the same time, the sixth power input line 82W4-U1 is connected to the sixth connection terminal 98A2.

[0284] (Assembly process) In the fourth embodiment, the assembly process is the same as in the first embodiment. In the fourth embodiment of the manufacturing method for the rotating electric machine 10, the rotating electric machine 10 (see FIG. 1) is manufactured in the above-described manner. The configuration of the rotating electric machine 10 manufactured in the above-described manner is the same as in the third embodiment, except that a first connection portion 92 and a second connection portion 94 are formed instead of one connection portion 90 (see FIG. 17).

[0285] (Action and Effects) In the fourth embodiment described above, the same functions and effects as those of the third embodiment can be obtained with respect to the same configuration and method as those of the third embodiment.

[0286] 19, in the winding process in the fourth embodiment, the first nozzle 122 and the second nozzle 124 move to one circumferential side R1 of the core 50 to wind the teeth portions 54 of two phases out of the U, V, and W phases, and the first nozzle 122 and the second nozzle 124 move to the other circumferential side R2 of the core 50 to wind the teeth portions 54 of one phase out of the U, V, and W phases, thereby forming a plurality of coil portions 78. As a result, it becomes possible to wind the first winding 72 and the second winding 74 with a continuous wire around the plurality of teeth portions 54, thereby improving productivity.

[0287] In particular, the rotating electric machine 10 is an inner rotor type brushless motor in which multiple teeth 54 extend radially inward of the core 50, and according to the fourth embodiment, it is possible to realize a small, high-output, and low-cost inner rotor type brushless motor.

[0288] Moreover, the multiple power input lines 82 are arranged on one axial side Z2 of the core 50, and the multiple crossover lines 84 are arranged on the one axial side Z2 of the core 50. Therefore, the space on the other axial side Z1 can be minimized.

[0289] Furthermore, each of the multiple power input lines 82 is wired across two teeth portions 54. Therefore, the distance between both ends of the power input lines 82 and the distance between both ends of the jumper lines 84 are sufficiently secured, which also makes it possible to prevent the jumper lines 84 between the coil portions 78 and the power input lines 82 from becoming entangled in a complicated manner.

[0290] Moreover, each of the multiple jumper wires 84 is wired across two or 2 × 2 tooth portions 54. Therefore, the distance between both ends of the power input wire 82 and the distance between both ends of the jumper wire 84 are sufficiently secured, which also makes it possible to prevent the jumper wires 84 between the coil portions 78 and the power input wires 82 from becoming entangled in a complicated manner.

[0291] In the fourth embodiment, a first nozzle 122 and a second nozzle 124 are used to sequentially wind a first winding 72 and a second winding 74, which are two continuous wires, around the multiple teeth 54 using a double nozzle system. Therefore, compared to the third embodiment described above, in which a single nozzle 120 (see FIG. 4) is used to sequentially wind a single continuous wire, the winding 70, around the multiple teeth 54 using a single nozzle system, the number of steps in the winding process can be halved. This allows the process time to be shortened, and therefore the manufacturing costs to be reduced.

[0292] (Modification) Next, a modification of the fourth embodiment will be described.

[0293] The stator 20 according to the fourth embodiment has m=2 and n=2 as an example of an m-series, n-parallel delta connection where m is a natural number of 2 or more, but the manufacturing method of the stator 20 according to the fourth embodiment is applicable to all three-phase brushless motors where n is a multiple of 2 and the number of slots, teeth portions 54, and coil portions 78 is a multiple of 6 and 12 or more. Examples include 12 (m=2 and n=2), 18 (m=3 and n=2), 24 (m=4 and n=2, or m=2 and n=4), 30 (m=5 and n=2), 36 (m=2 and n=6, m=3 and n=4, or m=6 and n=2), etc.

[0294] Furthermore, the winding device according to the present embodiment is not limited to the double nozzle type, but may be of the double flyer type, for example.

[0295] 21, the temporary coupling molding runner 108 may be modified as follows. That is, the temporary coupling molding runner 108 extends from the opposite surface of the teeth portions 54 of the split cores 56 and is connected to each of them in a generally annular shape. In this case, the split cores 56 are arranged in an annular shape such that the tips of the teeth portions 54 are located on the outer circumferential side of the core 50. The first winding 72 is wound around each of the split cores 56 by moving the first nozzle 122 from one of the split cores 56 arranged in an annular shape to a split core 56 located on one circumferential side R1 of the temporary coupling molding runner 108 relative to the one split core 56 and performing the winding process described above. In addition, the second winding 74 is wound around each of the split cores 56 by performing the above-mentioned winding winding process from one of the split cores 56 arranged in an annular shape, that is located 180° circumferentially away from the temporary joint molding runner 108, to the split core 56 located on one circumferential side R1 of the temporary joint molding runner 108, as in the case of the first winding 72, by moving the second nozzle 124.

[0296] In this case, similarly to the modified example of the first embodiment, after the winding 70 is wound around the core 50, it is turned over so that the tips of the multiple teeth 54 are positioned on the inner periphery of the core 50.

[0297] It should be noted that this modified example is not limited to the double nozzle system. Instead of the first nozzle 122 and the second nozzle 124, the first flyer 112 and the second flyer 114 may be used, and the first flyer 112 and the second flyer 114 may be moved to wind the core 50.

[0298] Also, as shown in FIG. 22, the provisionally connected molding runner 106 may be changed to a jig 104 having a generally elliptical shape in a plan view, and the first nozzle 122 and the second nozzle 124 may be changed to a first flyer 112 and a second flyer 114 to form a double flyer system. In this case, the divided cores 56 are connected in an annular shape so that the tips of the teeth 54 are located on the outer periphery side of the core 50. As a result, the first winding 72 is wound around the core 50 by the first flyer 112 performing the above-mentioned winding winding process in the circumferential direction from the divided core 56 located at one tip of the jig 104 in the longitudinal direction. The second winding 74 is wound around the core 50 by the second flyer 114 performing the above-mentioned winding winding process in the circumferential direction from the divided core 56 located at the other tip of the jig 104 in the longitudinal direction.

[0299] In this case, similarly to the modified example of the first embodiment, after the winding process, the core 50 is inverted as shown in Fig. 12. The core 50 is then inverted so that it changes from a state in which the tips of the teeth 54 are connected in an annular shape so as to be located on the outer periphery of the core 50 as shown in Fig. 12, to a band-like state as shown in Fig. 13, and then to a state in which the tips of the teeth 54 are connected in an annular shape so as to be located on the inner periphery of the core 50 (see Fig. 7).

[0300] In the fourth embodiment, the multiple connection terminals 98 are changed to the first connection terminal 98C to the sixth connection terminal 98A2 from the first embodiment, but may be the first connection terminal 98C to the third connection terminal 98A as in the first embodiment. In that case, the fourth connection portion C2 to the sixth connection portion A2 are connected to the first connection terminal 98C to the third connection terminal 98A, respectively, together with the first connection portion C1 to the third connection portion A1.

[0301] In the fourth embodiment, the same modified examples as those in the third embodiment can be adopted for the same configurations and methods as those in the third embodiment.

[0302] In the winding process according to the fourth embodiment, the coil portions V1 to V4 of the U, V, and W phases are wound by moving the first nozzle 122 and the second nozzle 124 to the other circumferential side R2 of the core 50. However, the winding process according to the present embodiment is not limited to this. For example, the coil portions U1 to U4 of the U phase or the coil portions W1 to W4 of the W phase may be wound by moving the first nozzle 122 and the second nozzle 124 to the other circumferential side R2 of the core 50. Even in this case, the first winding 72 and the second winding 74 can be wound around the multiple teeth portions 54 with a continuous wire, which can improve productivity.

[0303] [Fifth embodiment of the manufacturing method for a rotating electric machine] Next, a fifth embodiment of the method for manufacturing the rotating electric machine 10 according to an embodiment of the present invention will be described.

[0304] In the fifth embodiment of the method for manufacturing the rotating electric machine 10, the core setting step is similar to that in the third embodiment of the method for manufacturing the rotating electric machine 10. Meanwhile, in the fifth embodiment of the method for manufacturing the rotating electric machine 10, the winding winding step is changed as follows compared to the third embodiment of the method for manufacturing the rotating electric machine 10.

[0305] (Winding process) In the winding process of the fifth embodiment, as in the third embodiment, one nozzle 120 (see FIG. 4) is used as an example, and the winding 70, which is a single continuous wire, is wound sequentially around the teeth portions 54 by the single nozzle method. FIG 23 is a diagram of the winding process of the fifth embodiment, and Table 5 is a process chart showing the winding order of the winding process of the fifth embodiment.

[0306] In the winding process in the fifth embodiment, the winding 70 is wound in the following order of steps 1 to 12. In the drawing, circled numbers 1 to 12 indicate the order in which the multiple coil portions 78 are formed.

[0307] (First Step) In a first step, the winding 70 is wound around the first tooth portion 54U1 from one axial side Z2 of the core 50. Also, the winding 70 is wound counterclockwise as viewed in the axial direction an integer number of turns to form the first coil portion 78U1.

[0308] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the fourth coil portion 54U2 to form a first crossover wire 84U1-U2.

[0309] (Second step) In the second step, the winding 70 is wound counterclockwise from one axial side Z2 of the core 50 to the fourth tooth portion 54U2 an integer number of turns when viewed from the axial direction to form the fourth coil portion 78U2, and then led out to the one axial side Z2 of the core 50.

[0310] Thereafter, the winding 70 is led from the other axial side Z1 to the other circumferential side R2 toward one axial side Z2 of the core 50 and returned to between the fourth coil portion 54U2 and the fifth coil portion 54V2 to form the second power input line 82U2-V2. At this time, the second power input line 82U2-V2 is formed by a continuous wire.

[0311] (Third Step) In a third step, the winding 70 is wound around the fifth tooth portion 54V2 from one axial side Z2 of the core 50. Also, the winding 70 is wound counterclockwise as viewed in the axial direction an integer number of turns to form a fifth coil portion 78V2.

[0312] Thereafter, the winding 70 is routed from one axial side Z2 to the other circumferential side R2 across the second coil portion 54V1 to form a second jumper 84V2-V1.

[0313] (Fourth step) In the fourth step, the winding 70 is wound counterclockwise from one axial side Z2 of the core 50 to the second tooth portion 54V1 an integer number of turns when viewed from the axial direction to form the second coil portion 78V1, and then led out to the one axial side Z2 of the core 50.

[0314] Thereafter, the winding 70 is returned from one axial side Z2 of the core 50 to between the second teeth portion 54V1 and the third teeth portion 54W1 and wired across the third coil portion 54W1, and the first power input line 82V1-W1 is formed by a continuous wire.

[0315] (5th step) In a fifth step, the winding 70 is wound around the third tooth portion 54W1 from one axial side Z2 of the core 50. Also, the winding 70 is wound counterclockwise as viewed in the axial direction an integer number of turns to form the third coil portion 78W1.

[0316] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the sixth coil portion 54W2 to form a third jumper 84W1-W2.

[0317] (Sixth step) In the sixth step, the winding 70 is wound counterclockwise from one axial side Z2 of the core 50 to the sixth tooth portion 54W2 an integer number of turns when viewed from the axial direction to form the sixth coil portion 78W2, and then led out to the one axial side Z2 of the core 50.

[0318] Thereafter, the winding 70 is led from the other axial side Z1 to the other circumferential side R2 toward one axial side Z2 of the core 50 and returned to between the sixth coil portion 54W2 and the seventh coil portion 54U3 to form the third power input line 82W2-U3. At this time, the third power input line 82W2-U3 is formed of a continuous wire.

[0319] (Seventh step) In a seventh step, the winding 70 is wound around the seventh tooth portion 54U3 from one axial side Z2 of the core 50. Also, the winding 70 is wound counterclockwise as viewed in the axial direction an integer number of turns to form a seventh coil portion 78U3.

[0320] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the tenth coil portion 54U4 to form a fourth crossover wire 84U3-U4.

[0321] (Step 8) In the eighth step, the winding 70 is wound counterclockwise from one axial side Z2 of the core 50 to the tenth tooth portion 54U4 an integer number of turns when viewed from the axial direction to form the tenth coil portion 78U4, and then led out to the one axial side Z2 of the core 50.

[0322] Thereafter, the winding 70 is returned from one axial side Z2 of the core 50 to between the tenth teeth portion 54U4 and the eleventh teeth portion 54V4 and wired across the eleventh coil portion 54V4, and the fifth power input line 82U4-V4 is formed by a continuous wire.

[0323] (9th step) In a ninth step, the winding 70 is wound around the eleventh tooth portion 54V4 from one axial side Z2 of the core 50. Also, the winding 70 is wound counterclockwise as viewed in the axial direction an integer number of turns to form an eleventh coil portion 78V4.

[0324] Thereafter, the winding 70 is routed from one axial side Z2 to the other circumferential side R2 across the eighth coil portion 54V3 to form a fifth jumper 84V4-V3.

[0325] (Step 10) In the tenth step, the winding 70 is wound counterclockwise from one axial side Z2 of the core 50 to the eighth tooth portion 54V3 an integer number of turns when viewed from the axial direction to form the eighth coil portion 78V3, and then led out to the one axial side Z2 of the core 50.

[0326] Thereafter, the winding 70 is led from the other axial side Z1 to the other circumferential side R2 toward the one axial side Z2 of the core 50 and returned to between the eighth coil portion 54V3 and the ninth coil portion 54W3 to form the fourth power input line 82V3-W3. At this time, the fourth power input line 82V3-W3 is formed by a continuous wire.

[0327] (Step 11) In an eleventh step, the winding 70 is wound around the ninth tooth portion 54W3 from one axial side Z2 of the core 50. Also, the winding 70 is wound counterclockwise as viewed in the axial direction an integer number of turns to form a ninth coil portion 78W3.

[0328] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the twelfth coil portion 54W4 to form a sixth jumper 84W3-W4.

[0329] (Step 12) In the 12th step, the winding 70 is wound counterclockwise from one axial side Z2 of the core 50 to the 12th tooth portion 54W4 an integer number of turns when viewed from the axial direction to form the 12th coil portion 78W4, and then led out to the one axial side Z2 of the core 50.

[0330] Thereafter, the winding 70 is routed over the winding-start end 82A of the winding 70 on one axial side Z2 of the core 50, and a sixth power input line 82W4-U1 is formed by a wiring process.

[0331] [Table 5]

[0332] Furthermore, in the winding process of the fifth embodiment, of the multiple coil sections 78, the U-phase coil sections U1 to U4 and the W-phase coil sections W1 to W4 are wound by moving the nozzle 120 to one circumferential side R1 of the core 50, and the V-phase coil sections V1 to V4 are wound by moving the nozzle 120 to the other circumferential side R2 of the core 50.

[0333] After the winding process, for example, each of the split cores 56 is cut off from the temporary joint molding runner 106 and connected in an annular shape with the teeth portions 54 facing radially inward.

[0334] (winding shaping process, wire connection process and assembly process) In the fifth embodiment, the winding shaping process, the wire connection process, and the assembly process are the same as those in the third embodiment. In the fifth embodiment of the method for manufacturing the rotating electric machine 10, the rotating electric machine 10 (see FIG. 1) is manufactured in the above-described manner.

[0335] Each of the multiple power input lines 82 is led out from between adjacent teeth portions 54. Each of the multiple first direction crossover wires is wired across two teeth portions 54, and each of the multiple second direction crossover wires is wired across 2 × 2 teeth portions 54.

[0336] Additionally, the first power input line 82V1-W1, the second power input line 82U2-V2, the third power input line 82W2-U3, the fourth power input line 82V3-W3, the fifth power input line 82U4-V4, and the sixth power input line 82W4-U1 are disposed on one axial side Z2 of the core 50. The sixth power input line 82W4-U1 has a connection portion 90 that connects the winding start end 82A and the winding end end of the wire 70 together.

[0337] In addition, the first crossover wire 84U1-U2, the second crossover wire 84V2-V1, the third crossover wire 84W1-W2, the fourth crossover wire 84U3-U4, the fifth crossover wire 84V4-V3, and the sixth crossover wire 84W3-W4 are arranged on one axial side Z2 of the core 50.

[0338] (Action and Effects) In the fifth embodiment described above, the same functions and effects as those of the third embodiment can be obtained with respect to the same configuration and method as those of the third embodiment.

[0339] In addition, the stator 20 according to the fifth embodiment has m=2 and n=2 as an example of an m-series, n-parallel delta connection where m is a natural number of 2 or more and n is a natural number, but the manufacturing method of the stator 20 according to the fifth embodiment is applicable to all three-phase brushless motors in which the number of slots, teeth portions 54, and coil portions 78 is a multiple of 6 and is 12 or more. For example, the number of slots, teeth portions 54, and coil portions 78 can be 12 (m=2 and n=2), 18 (m=2 and n=3, or m=3 and n=2), 24 (m=4 and n=2, or m=2 and n=4), 30 (m=2 and n=5, or m=5 and n=2), 36 (m=2 and n=6, m=3 and n=4, m=4 and n=3, or m=6 and n=2), etc.

[0340] 23, in the winding process in the fifth embodiment, the nozzle 120 moves to one circumferential side R1 of the core 50 to wind the teeth portions 54 of two phases out of the U, V, and W phases, and moves to the other circumferential side R2 of the core 50 to wind the teeth portions 54 of one phase out of the U, V, and W phases, thereby forming a plurality of coil portions 78. As a result, it becomes possible to wind the winding 70 around the plurality of teeth portions 54 with a continuous wire, thereby improving productivity.

[0341] Moreover, the multiple power input lines 82 are arranged on one axial side Z2 of the core 50, and the multiple crossover lines 84 are arranged on the one axial side Z2 of the core 50. Therefore, the space on the other axial side Z1 can be minimized.

[0342] In particular, the rotating electric machine 10 is an inner rotor type brushless motor in which multiple teeth 54 extend radially inward from the core 50, and according to the fifth embodiment, it is possible to realize a small, high-output, and low-cost inner rotor type brushless motor.

[0343] Moreover, each of the multiple power input lines 82 is led out from between adjacent teeth portions 54. Therefore, while a sufficient gap is ensured between both ends of the jumper wire 84, the gap between both ends of the power input line is narrowed, which makes it possible to prevent the jumper wires 84 between the coil portions 78 and the power input lines 82 from becoming entangled in a complicated manner.

[0344] Moreover, each of the multiple jumper wires 84 is wired across two or 2 × 2 tooth portions 54. Therefore, the distance between both ends of the power input wire 82 and the distance between both ends of the jumper wire 84 are sufficiently secured, which also makes it possible to prevent the jumper wires 84 between the coil portions 78 and the power input wires 82 from becoming entangled in a complicated manner.

[0345] (Modification) In the fifth embodiment, the same modified examples as those in the third embodiment can be adopted for the same configurations and methods as those in the third embodiment.

[0346] In the winding process according to the fifth embodiment, the V-phase coil portions V1 to V4 of the U-phase, V-phase, and W-phase coils are wound by moving the nozzle 120 to the other circumferential side R2 of the core 50, but the winding process according to the present embodiment is not limited to this. For example, the U-phase coil portions U1 to U4 or the W-phase coil portions W1 to W4 may be wound by moving the nozzle 120 to the other circumferential side R2 of the core 50. Even in this case, it is possible to wind the winding 70 around the multiple teeth portions 54 using a continuous wire, thereby improving productivity.

[0347] [Sixth embodiment of the manufacturing method for a rotating electric machine] Next, a sixth embodiment of the method for manufacturing the rotating electric machine 10 according to an embodiment of the present invention will be described.

[0348] The sixth embodiment of the method for manufacturing the rotating electric machine 10 differs from the third embodiment of the method for manufacturing the rotating electric machine 10 described above in that the core setting step and the winding winding step are changed as follows.

[0349] (Core set process) Fig. 24 is a diagram showing a core setting step in the sixth embodiment. As shown in Fig. 24, in the core setting step in the sixth embodiment, as an example, the multiple split cores 56 are held by a temporary connection molding runner 106 molded integrally with the insulator 62. The temporary connection molding runner 106 extends from the surfaces of the multiple split cores 56 opposite the teeth portions 54, and each is connected in a substantially straight line. At this time, the multiple split cores 56 are in a state where the tips of the multiple teeth portions 54 are aligned in a straight line.

[0350] In the sixth embodiment, two nozzles 120, i.e., a first nozzle 122 and a second nozzle 124, are used. The first nozzle 122 is disposed opposite the split core 56 disposed at one end of the temporary coupling molding runner 106. As will be described later, when the winding 70 is wound in sequence around the multiple teeth portions 54, the first nozzle 122 moves so as to sequentially face the multiple teeth portions 54 attached to the temporary coupling molding runner 106.

[0351] The second nozzle 124 is disposed opposite a split core 56 that is half the total number of split cores 56 away from the split core 56 disposed at one end of the temporary coupling molding runner 106. As with the first nozzle 122, when the winding 70 is wound in sequence around the multiple teeth 54, as described below, the second nozzle 124 moves in sequence to face the multiple teeth 54 attached to the temporary coupling molding runner 106.

[0352] (Winding process) 24, in the winding process in the sixth embodiment, as an example, a first nozzle 122 and a second nozzle 124 are used, and a first winding 72 and a second winding 74, which are two continuous wires, are wound in sequence around the teeth portions 54 by a double nozzle method. Fig. 25 is a diagram of the winding process in the sixth embodiment, and Table 6 is a process chart showing the winding order in the winding process in the sixth embodiment.

[0353] In the winding process in the sixth embodiment, the first winding 72 and the second winding 74 are wound in the following order of steps 1 to 6. In the drawing, the circled numbers 1 to 6 indicate the order in which the multiple coil portions 78 are formed.

[0354] (1st Step-1) In a first step, the first winding 72 is wound around the first teeth portion 54U1 from one axial side Z2 of the core 50 by a first nozzle 122 (see FIG. 24). The first winding 72 is also wound counterclockwise as viewed in the axial direction an integer number of turns to form the first coil portion 78U1.

[0355] Thereafter, the first winding 72 is wired from one axial side Z2 to one circumferential side R1 across the fourth coil portion 54U2 to form a first crossover wire 84U1-U2.

[0356] (1st Step-2) Similarly, in the first step, the second winding 74 is wound around the seventh teeth portion 54U3 from one axial side Z2 of the core 50 by the second nozzle 124 (see FIG. 24). The second winding 74 is also wound counterclockwise as viewed in the axial direction by an integer number of turns to form the seventh coil portion 78U3.

[0357] Thereafter, the second winding 74 is wired from one axial side Z2 to one circumferential side R1 across the tenth coil portion 54U4 to form a fourth crossover 84U3-U4.

[0358] (2nd Step-1) In the second step, the first winding 72 is wound counterclockwise from one axial side Z2 of the core 50 to the fourth tooth portion 54U2 by the first nozzle 122 (see Figure 24) an integer number of turns when viewed from the axial direction to form the fourth coil portion 78U2, and then led out to the one axial side Z2 of the core 50.

[0359] Thereafter, the first winding 72 is led from the other axial side Z1 to the other circumferential side R2 toward one axial side Z2 of the core 50 and returned to between the fourth coil portion 54U2 and the fifth coil portion 54V2 to form the second power input line 82U2-V2. At this time, the second power input line 82U2-V2 is formed by a continuous wire.

[0360] (2nd Step-2) Similarly, in the second step, the second winding 74 is wound counterclockwise from one axial side Z2 of the core 50 to the tenth tooth portion 54U4 by the second nozzle 124 (see FIG. 24) an integer number of turns when viewed from the axial direction to form the tenth coil portion 78U4, and then led out to the one axial side Z2 of the core 50.

[0361] Thereafter, the second winding 74 is returned from one axial side Z2 of the core 50 to between the tenth teeth portion 54U4 and the eleventh teeth portion 54V4 and wired across the eleventh coil portion 54V4, and the fifth power input line 82U4-V4 is formed by a continuous wire.

[0362] (Third Step-1) In a third step, the first winding 72 is wound around the fifth teeth portion 54V2 from one axial side Z2 of the core 50 by the first nozzle 122 (see FIG. 24). The first winding 72 is also wound counterclockwise as viewed in the axial direction by an integer number of turns to form the fifth coil portion 78V2.

[0363] Thereafter, the first winding 72 is routed from one axial side Z2 to the other circumferential side R2 across the second coil portion 54V1 to form a second jumper 84V2-V1.

[0364] (Third Step-2) Similarly, in a third step, the second winding 74 is wound around the eleventh tooth portion 54V4 from one axial side Z2 of the core 50 by the second nozzle 124 (see FIG. 24). Also, the second winding 74 is wound counterclockwise as viewed in the axial direction by an integer number of turns to form the eleventh coil portion 78V4.

[0365] Thereafter, the second winding 74 is routed from one axial side Z2 to the other circumferential side R2 across the eighth coil portion 54V3 to form a fifth jumper 84V4-V3.

[0366] (4th Step-1) In the fourth step, the first winding 72 is wound counterclockwise from one axial side Z2 of the core 50 to the second teeth portion 54V1 by the first nozzle 122 (see Figure 24) an integer number of turns when viewed from the axial direction to form the second coil portion 78V1, and then led out to the one axial side Z2 of the core 50.

[0367] Thereafter, the first winding 72 is led from the other axial side Z1 to the other circumferential side R2 toward one axial side Z2 of the core 50 and returned to between the second coil portion 54V1 and the third coil portion 54W1, thereby forming the first power input line 82V1-W1. At this time, the first power input line 82V1-W1 is formed by a continuous wire.

[0368] (4th Step-2) Similarly, in the fourth step, the second winding 74 is wound counterclockwise from one axial side Z2 of the core 50 to the eighth tooth portion 54V3 by the second nozzle 124 (see Figure 24) an integer number of turns when viewed from the axial direction to form the eighth coil portion 78V3, and then led out to the one axial side Z2 of the core 50.

[0369] Thereafter, the second winding 74 is returned from one axial side Z2 of the core 50 to between the eighth teeth portion 54V3 and the ninth teeth portion 54W3 and wired across to the ninth coil portion 54W3, and the fourth power input line 82V3-W3 is formed by a continuous wire.

[0370] (5th Step-1) In a fifth step, the first winding 72 is wound around the third teeth portion 54W1 from one axial side Z2 of the core 50 by the first nozzle 122 (see FIG. 24). The first winding 72 is also wound counterclockwise as viewed in the axial direction by an integer number of turns to form the third coil portion 78W1.

[0371] Thereafter, the first winding 72 is routed from one axial side Z2 to one circumferential side R1 across the sixth coil portion 54W2 to form a third jumper 84W1-W2.

[0372] (5th Step-2) Similarly, in the fifth step, the second winding 74 is wound around the ninth tooth portion 54W3 from one axial side Z2 of the core 50 by the second nozzle 124 (see FIG. 24). The ninth coil portion 78W3 is formed by winding the second winding 74 an integer number of turns counterclockwise as viewed in the axial direction.

[0373] Thereafter, the second winding 74 is routed from one axial side Z2 to one circumferential side R1 across the twelfth coil portion 54W4 to form a sixth jumper 84W3-W4.

[0374] (6th Step-1) In the sixth step, the first winding 72 is wound counterclockwise from one axial side Z2 of the core 50 to the sixth teeth portion 54W2 by the first nozzle 122 (see Figure 24) an integer number of turns when viewed from the axial direction to form the sixth coil portion 78W2, and then led out to the one axial side Z2 of the core 50.

[0375] Thereafter, the first winding 72 is led out from the other axial side Z1 to the other circumferential side R2 to one axial side Z2 of the core 50, and the winding ending end 82D of the first winding 72 and the winding starting end 82E of the second winding 74 are connected to each other on the one axial side Z2 of the core 50, and a first connection portion 92 is formed by a wiring connection process described later, and a third power input line 82W2-U3 is formed.

[0376] (6th Step-2) Similarly, in the sixth step, the winding 70 is wound counterclockwise from one axial side Z2 of the core 50 to the twelfth tooth portion 54W4 by the second nozzle 124 (see FIG. 24) an integer number of turns when viewed from the axial direction to form the twelfth coil portion 78W4, and then led out to the one axial side Z2 of the core 50.

[0377] Thereafter, the first winding 72 is led out to one axial side Z2 of the core 50, and the winding ending end 82F of the second winding 74 and the winding starting end 82C of the first winding 72 are connected to each other on one axial side Z2 of the core 50, thereby forming the sixth power input line 82W4-U1 through a wiring process.

[0378] Then, by forming the first connecting portion 92 and the second connecting portion 94, the first winding 72 and the second winding 74 form a single continuous winding 70.

[0379] [Table 6]

[0380] In the sixth embodiment, a 2-series, 2-parallel delta connection is formed in the above manner.

[0381] Each of the multiple power input lines 82 is led out from between adjacent teeth portions 54. Each of the multiple first direction crossover wires is wired across two teeth portions 54, and each of the multiple second direction crossover wires is wired across 2 × 2 teeth portions 54.

[0382] The first winding 72 and the second winding 74 are each formed of a single continuous wire, and one of the multiple power input lines 82 has a connection portion connecting a winding end 82F of the second winding 74 and a winding start end 82C of the first winding 72, and one of the power input lines 82 has a connection portion connecting a winding end 82D of the first winding 72 and a winding start end 82E of the second winding 74. The multiple power input lines 82 are connected to connection terminals 98 one by one.

[0383] In addition, the first power input line 82V1-W1 connects the end of the second coil portion 78V1 to the start of the third coil portion 78W1, the second power input line 82U2-V2 connects the end of the fourth coil portion 78U2 to the start of the fifth coil portion 78V2, and the third power input line 82W2-U3 connects the end of the sixth coil portion 78W2 to the start of the seventh coil portion 78U3 by a wiring connection process described below. The fourth power input line 82V3-W3 connects the end of the eighth coil section 78V3 to the beginning of the ninth coil section 78W3, the fifth power input line 82U4-V4 connects the end of the tenth coil section 78U4 to the beginning of the eleventh coil section 78V4, and the sixth power input line 82W4-U1 connects the end of the twelfth coil section 78W4 to the beginning of the first coil section 78U1 through a wiring process described below.

[0384] The first power input line 82V1-W1, the second power input line 82U2-V2, the third power input line 82W2-U3, the fourth power input line 82V3-W3, the fifth power input line 82U4-V4, and the sixth power input line 82W4-U1 are continuously wired. The first power input line 82V1-W1, the second power input line 82U2-V2, the third power input line 82W2-U3, the fourth power input line 82V3-W3, the fifth power input line 82U4-V4, and the sixth power input line 82W4-U1 are disposed on one axial side Z2 of the core 50. The third power input line 82W2-U3 has a connection portion that connects the winding start end 82E of the second winding 74 and the winding end end 82D of the first winding 72 together by a wiring connection process described later. The sixth power input line 82W4-U1 has a connection portion that connects the winding starting end 82C of the first winding 72 and the winding ending end 82F of the second winding 74 together by a wiring connection process described below.

[0385] In addition, the first crossover wire 84U1-U2, the second crossover wire 84V2-V1, the third crossover wire 84W1-W2, the fourth crossover wire 84U3-U4, the fifth crossover wire 84V4-V3, and the sixth crossover wire 84W3-W4 are arranged on one axial side Z2 of the core 50.

[0386] The first power input line 82V1-W1, the second power input line 82U2-V2, the third power input line 82W2-U3, the fourth power input line 82V3-W3, the fifth power input line 82U4-V4, and the sixth power input line 82W4-U1 are led out from between adjacent teeth portions 54. In addition, the first power input line 82V1-W1, the second power input line 82U2-V2, the third power input line 82W2-U3, the fourth power input line 82V3-W3, the fifth power input line 82U4-V4, and the sixth power input line 82W4-U1 are disposed on one axial side Z2 of the core 50. The third power input line 82W2-U3 has a first connection portion 92 connecting the ending end 82D of the first winding 72 and the starting end 82E of the second winding 74, and the sixth power input line 82W4-U1 has a second connection portion 94 connecting the ending end 82F of the second winding 74 and the starting end 82C of the first winding 72.

[0387] Furthermore, in the winding process of the sixth embodiment, of the multiple coil sections 78, the U-phase coil sections U1 to U4 and the W-phase coil sections W1 to W4 are wound by moving the first nozzle 122 and the second nozzle 124 to one circumferential side R1 of the core 50, and the V-phase coil sections V1 to V4 are wound by moving the first nozzle 122 and the second nozzle 124 to the other circumferential side R2 of the core 50.

[0388] After the winding process, for example, each of the split cores 56 is cut off from the temporary joint molding runner 106 and connected in an annular shape with the teeth portions 54 facing radially inward.

[0389] (winding shaping process, wire connection process and assembly process) In the sixth embodiment, the winding shaping process, the wire connection process, and the assembly process are the same as those in the fifth embodiment. In the sixth embodiment of the method for manufacturing the rotating electric machine 10, the rotating electric machine 10 (see FIG. 1) is manufactured in the above-described manner. The configuration of the rotating electric machine 10 manufactured in the above-described manner is the same as that of the fifth embodiment, except that a first connection portion 92 and a second connection portion 94 are formed instead of one connection portion 90 (see FIG. 17).

[0390] (Action and Effects) In the sixth embodiment described above, the same functions and effects as those of the fifth embodiment can be obtained with respect to the same configuration and method as those of the fifth embodiment.

[0391] 25, in the winding process in the sixth embodiment, the first nozzle 122 and the second nozzle 124 move to one circumferential side R1 of the core 50 to wind the teeth portions 54 of two phases out of the U, V, and W phases, and the first nozzle 122 and the second nozzle 124 move to the other circumferential side R2 of the core 50 to wind the teeth portions 54 of one phase out of the U, V, and W phases, thereby forming a plurality of coil portions 78. As a result, it becomes possible to wind the first winding 72 and the second winding 74 with a continuous wire around the plurality of teeth portions 54, thereby improving productivity.

[0392] In particular, the rotating electric machine 10 is an inner rotor type brushless motor in which multiple teeth 54 extend radially inward from the core 50, and according to the sixth embodiment, it is possible to realize a small, high-output, and low-cost inner rotor type brushless motor.

[0393] Moreover, the multiple power input lines 82 are arranged on one axial side Z2 of the core 50, and the multiple crossover lines 84 are arranged on the one axial side Z2 of the core 50. Therefore, the space on the other axial side Z1 can be minimized.

[0394] Moreover, each of the multiple power input lines 82 is led out from between adjacent teeth portions 54. Therefore, while a sufficient gap is ensured between both ends of the jumper wire 84, the gap between both ends of the power input line is narrowed, which makes it possible to prevent the jumper wires 84 between the coil portions 78 and the power input lines 82 from becoming entangled in a complicated manner.

[0395] Moreover, each of the multiple jumper wires 84 is wired across two or 2 × 2 tooth portions 54. Therefore, the distance between both ends of the power input wire 82 and the distance between both ends of the jumper wire 84 are sufficiently secured, which also makes it possible to prevent the jumper wires 84 between the coil portions 78 and the power input wires 82 from becoming entangled in a complicated manner.

[0396] In the sixth embodiment, a first nozzle 122 and a second nozzle 124 are used to sequentially wind a first winding 72 and a second winding 74, which are two continuous wires, around the teeth 54 using a double nozzle system. Therefore, compared to the fifth embodiment described above, in which a single nozzle 120 (see FIG. 4) is used to sequentially wind a single continuous wire, the winding 70, around the teeth 54 using a single nozzle system, the number of steps in the winding process can be halved. This allows the process time to be shortened, and therefore the manufacturing costs to be reduced.

[0397] (Modification) Next, a modification of the sixth embodiment will be described.

[0398] The stator 20 according to the sixth embodiment has m=2 and n=2 as an example of an m-series-n-parallel delta connection where m is a natural number of 2 or more and n is a natural number, but the manufacturing method of the stator 20 according to the sixth embodiment is applicable to all three-phase brushless motors where n is a multiple of 2 and the number of slots, teeth portions 54, and coil portions 78 is a multiple of 6 and 12 or more. Examples include 12 (m=2 and n=2), 18 (m=3 and n=2), 24 (m=4 and n=2 or m=2 and n=4), 30 (m=5 and n=2), 36 (m=2 and n=6, m=3 and n=4, or m=6 and n=2), etc.

[0399] Furthermore, the winding device according to the present embodiment is not limited to the double nozzle type, but may be of the double flyer type, for example.

[0400] 26, the temporary coupling molding runner 106 may be modified as follows. That is, the temporary coupling molding runner 108 extends from the opposite surface of the teeth portions 54 of the split cores 56, and is connected to each of them in a generally annular shape. In this case, the split cores 56 are arranged in an annular shape such that the tips of the teeth portions 54 are located on the outer circumferential side of the core 50. The first winding 72 is wound around each of the split cores 56 by moving the first nozzle 122 from one of the split cores 56 arranged in an annular shape to a split core 56 located on one circumferential side R1 of the temporary coupling molding runner 108 relative to the one split core 56 and performing the winding process described above. In addition, the second winding 74 is wound around each of the split cores 56 by performing the above-mentioned winding winding process from one of the split cores 56 arranged in an annular shape, that is located 180° circumferentially away from the temporary joint molding runner 108, to the split core 56 located on one circumferential side R1 of the temporary joint molding runner 108, as in the case of the first winding 72, by moving the second nozzle 124.

[0401] In this case, similarly to the modified example of the first embodiment, after the winding 70 is wound around the core 50, it is turned over so that the tips of the multiple teeth 54 are positioned on the inner periphery of the core 50.

[0402] 22, in the sixth embodiment, similarly to the modified example of the fourth embodiment, the temporary joint molding runner 106 may be changed to a jig 104 having a generally elliptical shape in a plan view, and the first nozzle 122 and the second nozzle 124 may be changed to a first flyer 112 and a second flyer 114 to form a double flyer system. In this case, the winding shaping process, the wire connection process, and the assembly process are the same as those in the modified example of the fourth embodiment.

[0403] After the core 50 has been inverted, the rotating electric machine 10 (see FIG. 1) is manufactured in the same manner as in the winding shaping process described above and subsequent steps.

[0404] In the sixth embodiment, the same modified examples as those in the fourth embodiment can be adopted for the same configurations and methods as those in the fourth embodiment.

[0405] In the winding process according to the sixth embodiment, the coil portions V1 to V4 of the U, V, and W phases are wound by moving the first nozzle 122 and the second nozzle 124 to the other circumferential side R2 of the core 50. However, the winding process according to the present embodiment is not limited to this. For example, the coil portions U1 to U4 of the U phase or the coil portions W1 to W4 of the W phase may be wound by moving the first nozzle 122 and the second nozzle 124 to the other circumferential side R2 of the core 50. Even in this case, the first winding 72 and the second winding 74 can be wound around the multiple teeth portions 54 with a continuous wire, which can improve productivity.

[0406] [Seventh embodiment of the manufacturing method for a rotating electric machine] Next, a seventh embodiment of the method for manufacturing the rotating electric machine 10 according to an embodiment of the present invention will be described.

[0407] In the seventh embodiment of the method for manufacturing the rotating electric machine 10, the core setting process is similar to that in the fourth embodiment of the method for manufacturing the rotating electric machine 10. On the other hand, the seventh embodiment of the method for manufacturing the rotating electric machine 10 is modified as follows with respect to the fourth embodiment of the method for manufacturing the rotating electric machine 10.

[0408] (Winding connection configuration) Fig. 27 is a diagram showing a core setting step in the seventh embodiment. As shown in Fig. 27, in the core setting step in the seventh embodiment, as an example, the multiple split cores 56 are held by a temporary connection molding runner 106 molded integrally with the insulator 62. The temporary connection molding runner 106 extends from the surfaces of the multiple split cores 56 opposite the teeth portions 54, and each is connected in a substantially straight line. At this time, the multiple split cores 56 are in a state where the tip portions of the multiple teeth portions 54 are aligned in a straight line and connected to each other.

[0409] In the seventh embodiment, three nozzles 120 are used, namely, a first nozzle 122, a second nozzle 124, and a third nozzle 126. The first nozzle 122 is disposed opposite the split core 56 disposed at one end of the temporary coupling molding runner 106. As will be described later, when the winding 70 is wound in sequence around the multiple teeth portions 54, the first nozzle 122 moves so as to sequentially face the multiple teeth portions 54 attached to the temporary coupling molding runner 106.

[0410] The second nozzle 124 is disposed opposite a split core 56 that is 1 / 3 of the total number of split cores 56 away from the split core 56 disposed at one end of the temporary coupling molding runner 106. As with the first nozzle 122, when the winding 70 is wound in sequence around the multiple teeth 54, as described below, the second nozzle 124 moves in sequence to face the multiple teeth 54 attached to the temporary coupling molding runner 106.

[0411] The third nozzle 126 is disposed opposite a split core 56 that is ⅔ of the total number of split cores 56 away from the split core 56 disposed at one end of the temporary coupling molding runner 106. As with the first nozzle 122, when the winding 70 is wound in sequence around the multiple teeth 54, as described below, the third nozzle 126 moves in sequence to face the multiple teeth 54 attached to the temporary coupling molding runner 106.

[0412] In the seventh embodiment of the manufacturing method for the rotating electric machine 10, as an example of an m-series, n-parallel delta connection where m is a natural number equal to or greater than 2 and n is a natural number, the multiple coil portions 78 are delta connected in a 2-series, 3-parallel configuration. That is, in the seventh embodiment of the manufacturing method for the rotating electric machine 10, m=2 and n=3, and the number of slots, teeth portions 54, and coil portions 78 is 18.

[0413] To specifically explain the wiring configuration of the multiple coil sections 78 that are delta-connected in a 2-series, 3-parallel configuration, six coil sections 78 of the same phase are connected in series in pairs (m=2) to form three rows (n=3) of coil arrays 78A. Furthermore, three sets of coil groups 80 each consisting of the six coil sections 78 of the same phase are connected in a delta shape (triangle).

[0414] (Winding process) As shown in Fig. 27, in the winding process of the seventh embodiment, a first winding 72, a second winding 74, and a third winding 76, which are three continuous wires, are wound in sequence around the teeth portions 54 by the triple nozzle method. Fig. 28 is a diagram showing the winding process of the seventh embodiment, and Table 7 is a process chart showing the winding order of the winding process of the seventh embodiment.

[0415] In the following description of each step, the 18 teeth portions 54 will be referred to as follows in order from one circumferential side R1 of the core 50, corresponding to the notations U1 to W6 in the figure. (1) First teeth part 54U1 (2) Second teeth part 54V1 (3) 3rd teeth part 54W1 (4) 4th teeth part 54U2 (5) 5th teeth part 54V2 (6) 6th teeth part 54W2 (7) 7th teeth part 54U3 (8) 8th teeth part 54V3 (9) 9th teeth part 54W3 (10) 10th teeth part 54U4 (11) 11th teeth part 54V4 (12) 12th teeth part 54W4 (13) 13th teeth part 54U5 (14) 14th teeth part 54V5 (15) 15th teeth part 54W5 (16) 16th teeth part 54U6 (17) 17th teeth part 54V6 (18) 18th teeth part 54W6

[0416] The 18 coil portions 78 wound around the first teeth 54U1 to the 18th teeth 54W6 will be referred to as follows. (1) First coil section 78U1 (2) Second coil section 78V1 (3) Third coil section 78W1 (4) Fourth coil section 78U2 (5) 5th coil section 78V2 (6) 6th coil section 78W2 (7) 7th coil section 78U3 (8) 8th coil section 78V3 (9) 9th coil section 78W3 (10) 10th coil part 78U4 (11) 11th coil part 78V4 (12) 12th coil section 78W4 (13) 13th coil part 78U5 (14) 14th coil part 78V5 (15) 15th coil section 78W5 (16) 16th coil part 78U6 (17) 17th coil part 78V6 (18) 18th coil section 78W6

[0417] Furthermore, the winding 70 has nine power input wires 82 that connect the coil portions 78 of different phases together. The nine power input wires 82 each have a first connection portion C1 to a third connection portion A1 that are connected in a connection step described below. In the following explanation of each step, the three power input wires 82 will be referred to as follows in order on one circumferential side R1 of the core 50, corresponding to the notations U1 to W6 in the figure. (1) First power input line 82V1-W1 (2) Second power input line 82U2-V2 (3) 3rd power input line 82W2-U3 (4) 4th power input line 82V3-W3 (5) 5th power input line 82U4-V4 (6) 6th power input line 82W4-U5 (7) 7th power input line 82V5-W5 (8) 8th power input line 82U6-V6 (9) 9th power input line 82W6-U1

[0418] Further, the winding 70 has nine crossover wires 84 that connect the coil portions 78 of the same phase to each other. In the following explanation of each process, the nine crossover wires 84 will be referred to as follows in order from one circumferential side R1 of the core 50, corresponding to the notations U1 to W6 in the figure. (1) First crossover 84U1-U2 (2) Second crossover 84V2-V1 (3) Third crossover 84W1-W2 (4) 4th crossover 84U3-U4 (5) 5th crossover 84V4-V3 (6) 6th crossover 84W3-W4 (7) 7th crossover 84U5-U6 (8) 8th crossover 84V6-V5 (9) 9th crossover 84W5-W6

[0419] Furthermore, among the crossover wires 84, the first crossover wire 84U1-U2, the third crossover wire 84W1-W2, the fourth crossover wire 84U3-U4, the sixth crossover wire 84W3-W4, the seventh crossover wire 84U5-U6, and the ninth crossover wire 84W5-W6 correspond to the "first direction crossover wire" in the present invention, and the second crossover wire 84V2-V1, the fifth crossover wire 84V4-V3, and the eighth crossover wire 84V6-V5 correspond to the "second direction crossover wire" in the present invention.

[0420] (Winding configuration) In the winding process in the seventh embodiment, the winding 70 is wound in the following order of steps 1 to 4. In the drawing, circled numbers 1 to 4 indicate the order in which the multiple coil portions 78 are formed.

[0421] (1st Step-1) In a first step, the first winding 72 is wound around the first teeth portion 54U1 from one axial side Z2 of the core 50 by the first nozzle 122. Also, the first winding 72 is wound clockwise as viewed in the axial direction an integer number of turns to form the first coil portion 78U1.

[0422] Thereafter, the first winding 72 is wired from one axial side Z2 to one circumferential side R1 across the fourth coil portion 54U2 to form a first crossover wire 84U1-U2.

[0423] (1st Step-2) Similarly, in the first step, the second winding 74 is wound around the seventh teeth portion 54U3 from one axial side Z2 of the core 50 by the second nozzle 124. Also, the second winding 74 is wound clockwise as viewed in the axial direction by an integer number of turns to form the seventh coil portion 78U3.

[0424] Thereafter, the second winding 74 is routed from one axial side Z2 to one circumferential side R1 across the tenth coil portion 54U4 to form a fourth jumper 84U3-U4.

[0425] (1st Step-3) Similarly, in the first step, the third winding 76 is wound by the third nozzle 126 from one axial side Z2 of the core 50 to the 13th tooth portion 54U5 in a clockwise direction as viewed from the axial direction by an integer number of turns to form the 13th coil portion 78U5, and then led out to the one axial side Z2 of the core 50.

[0426] Thereafter, the third winding 76 is wired from one axial side Z2 to one circumferential side R1 across the sixteenth coil portion 54U6 to form a seventh crossover 84U5-U6.

[0427] (2nd Step-1) In the second step, the first winding 72 is wound by the first nozzle 122 from one axial side Z2 of the core 50 to the fourth teeth portion 54U2 an integer number of turns clockwise when viewed from the axial direction to form the fourth coil portion 78U2, and then led out to the one axial side Z2 of the core 50.

[0428] Thereafter, the first winding 72 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the second power input line 82U2-V2 is formed by a continuous wire across the fifth coil portion 54V2.

[0429] (2nd Step-2) Similarly, in the second step, the second winding 74 is wound by the second nozzle 124 from one axial side Z2 of the core 50 to the tenth tooth portion 54U4 an integer number of turns clockwise when viewed from the axial direction to form the tenth coil portion 78U4, and then led out to the one axial side Z2 of the core 50.

[0430] Thereafter, the second winding 74 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the fifth power input line 82U4-V4 is formed by a continuous wire across the eleventh coil portion 54V4.

[0431] (2nd Step-3) Similarly, in the second step, the third winding 76 is wound by the third nozzle 126 from one axial side Z2 of the core 50 to the 16th tooth portion 54U6 an integer number of turns clockwise as viewed from the axial direction to form the 16th coil portion 78U6, and then led out to the one axial side Z2 of the core 50.

[0432] Thereafter, the third winding 76 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the eighth power input line 82U6-V6 is formed by a continuous wire across the seventeenth coil portion 54V6.

[0433] (Third Step-1) In a third step, the first winding 72 is wound around the fifth teeth portion 54V2 from one axial side Z2 of the core 50 by the first nozzle 122. Also, the first winding 72 is wound clockwise as viewed in the axial direction an integer number of turns to form the fifth coil portion 78V2.

[0434] Thereafter, the first winding 72 is routed from one axial side Z2 to the other circumferential side R2 across the second coil portion 54V1 to form a second jumper 84V2-V1.

[0435] (Third Step-2) Similarly, in the third step, the second winding 74 is wound around the eleventh tooth portion 54V4 from one axial side Z2 of the core 50 by the second nozzle 124. Also, the second winding 74 is wound clockwise as viewed in the axial direction by an integer number of turns to form an eleventh coil portion 78V4.

[0436] Thereafter, the second winding 74 is routed from one axial side Z2 to the other circumferential side R2 across the eighth coil portion 54V3 to form a fifth jumper 84V4-V3.

[0437] (Third Step-3) Similarly, in the third step, the third winding 76 is wound around the seventeenth tooth portion 54V6 from one axial side Z2 of the core 50 by the third nozzle 126. Also, the third winding 76 is wound clockwise as viewed in the axial direction by an integer number of turns to form a seventeenth coil portion 78V6.

[0438] Thereafter, the third winding 76 is wired from one axial side Z2 to the other circumferential side R2 across the fourteenth coil portion 54V5, forming an eighth jumper 84V6-V5.

[0439] (4th Step-1) In the fourth step, the first winding 72 is wound by the first nozzle 122 from one axial side Z2 of the core 50 to the second teeth portion 54V1 an integer number of turns clockwise when viewed from the axial direction to form the second coil portion 78V1, and then led out to the one axial side Z2 of the core 50.

[0440] Thereafter, the first winding 72 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the first power input line 82V1-W1 across the third coil portion 54W1 is formed by a continuous wire.

[0441] (4th Step-2) Similarly, in the fourth step, the second winding 74 is wound by the second nozzle 124 from one axial side Z2 of the core 50 to the eighth tooth portion 54V3 an integer number of turns clockwise when viewed from the axial direction to form the eighth coil portion 78V3, and then led out to the one axial side Z2 of the core 50.

[0442] Thereafter, the second winding 74 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the fourth power input line 82V3-W3 is formed by a continuous wire across the ninth coil portion 54W3.

[0443] (4th Step-3) Similarly, in the fourth step, the third winding 76 is wound by the third nozzle 126 from one axial side Z2 of the core 50 to the fourteenth tooth portion 54V5 an integer number of turns clockwise when viewed from the axial direction to form the fourteenth coil portion 78V5, and then led out to the one axial side Z2 of the core 50.

[0444] Thereafter, the third winding 76 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the seventh power input line 82V5-W5 is formed by a continuous wire across the fifteenth coil portion 54W5.

[0445] (5th Step-1) In a fifth step, the first winding 72 is wound around the third teeth portion 54W1 from one axial side Z2 of the core 50 by the first nozzle 122. Also, the first winding 72 is wound clockwise as viewed in the axial direction by an integer number of turns to form the third coil portion 78W1.

[0446] Thereafter, the first winding 72 is routed from one axial side Z2 to one circumferential side R1 across the sixth coil portion 54W2 to form a third jumper 84W1-W2.

[0447] (5th Step-2) Similarly, in the fifth step, the second winding 74 is wound around the ninth tooth portion 54W3 from one axial side Z2 of the core 50 by the second nozzle 124. Also, the second winding 74 is wound clockwise as viewed in the axial direction by an integer number of turns to form the ninth coil portion 78W3.

[0448] Thereafter, the second winding 74 is routed from one axial side Z2 to one circumferential side R1 across the twelfth coil portion 54W4 to form a sixth jumper 84W3-W4.

[0449] (5th Step-3) Similarly, in the fifth step, the third winding 76 is wound around the fifteenth tooth portion 54W5 from one axial side Z2 of the core 50 by the third nozzle 126. Also, the third winding 76 is wound clockwise as viewed in the axial direction by an integer number of turns to form a fifteenth coil portion 78W5.

[0450] Thereafter, the third winding 76 is wired from one axial side Z2 to one circumferential side R1 across to the eighteenth coil portion 54W6, forming a ninth jumper wire 84W5-W6.

[0451] (6th Step-1) In the sixth step, the winding 70 is wound by the first nozzle 122 from one axial side Z2 of the core 50 to the sixth tooth portion 54W2 an integer number of turns clockwise when viewed from the axial direction to form the sixth coil portion 78W2, and then led out to the one axial side Z2 of the core 50.

[0452] Thereafter, the first winding 72 is wired from one axial side Z2 of the core 50 to one circumferential side R1 to the winding starting end 82E of the second winding 74, and a first connection portion 92 is formed by a wiring process described below, and a third power input line 82W2-U3 is formed.

[0453] (6th Step-2) Similarly, in the sixth step, the second winding 74 is wound by the second nozzle 124 from one axial side Z2 of the core 50 to the twelfth tooth portion 54W4 an integer number of turns clockwise when viewed from the axial direction to form the twelfth coil portion 78W4, and then led out to the one axial side Z2 of the core 50.

[0454] Thereafter, the second winding 74 is wired from one axial side Z2 of the core 50 to one circumferential side R1 across to the winding starting end 82G of the third winding 76, and a second connection portion 94 is formed by a wiring process described below, and a sixth power input line 82W4-U5 is formed.

[0455] (6th Step-3) Similarly, in the sixth step, the third winding 76 is wound by the third nozzle 126 from one axial side Z2 of the core 50 to the 18th tooth portion 54W6 an integer number of turns clockwise when viewed from the axial direction to form the 18th coil portion 78W6, and then led out to the one axial side Z2 of the core 50.

[0456] Thereafter, the third winding 76 is wired from one axial side Z2 of the core 50 to one circumferential side R1 across to the winding starting end 82C of the first winding 72, and a third connection portion 96 is formed by a wiring process described below, and a ninth power input line 82W6-U1 is formed.

[0457] Then, by forming the first connecting portion 92, the second connecting portion 94, and the third connecting portion 96, the first winding 72, the second winding 74, and the third winding 76 form a single continuous winding 70.

[0458] [Table 7]

[0459] In the seventh embodiment, a 2 series 3 parallel delta connection is formed in the above manner. Fig. 29 is a connection configuration diagram of a plurality of coil parts 78 connected by a winding winding process in the seventh embodiment, and as shown in Fig. 27, the winding 70 is wound around the core 50 by the winding winding process in the seventh embodiment.

[0460] Each of the multiple power input lines 82 is wired across two teeth portions 54. Each of the multiple first direction crossover wires is wired across 2 × 2 teeth portions 54, and each of the multiple second direction crossover wires is wired across two teeth portions 54.

[0461] The first winding 72, the second winding 74, and the third winding 76 are each formed of a single continuous wire, and one of the multiple power input lines 82 has a connection portion connecting a winding end 82D of the first winding 72 and a winding start end 82E of the second winding 74, one of the power input lines 82 has a connection portion connecting a winding end 82F of the second winding 74 and a winding start end 82G of the third winding 74, and one of the power input lines 82 has a connection portion connecting a winding end 82H of the third winding 76 and a winding start end 82C of the first winding 72. The multiple power input lines 82 are connected to connection terminals 98 one by one.

[0462] As shown in Figures 28 and 29, the first power input line 82V1-W1 connects the end of the second coil portion 78V1 to the start of the third coil portion 78W1, the second power input line 82U2-V2 connects the end of the fourth coil portion 78U2 to the start of the fifth coil portion 78V2, the third power input line 82W2-U3 connects the end of the sixth coil portion 78W2 to the start of the seventh coil portion 78U3, the fourth power input line 82V3-W3 connects the end of the eighth coil portion 78V3 to the start of the ninth coil portion 78W3, and the fifth power input line 82U4-V4 connects the tenth coil portion 78V4 to the start of the ninth coil portion 78W4. the sixth power input line 82W4-U5 connects the end of the twelfth coil section 78W4 to the starting end of the thirteenth coil section 78U5, the seventh power input line 82V5-W5 connects the end of the fourteenth coil section 78V5 to the starting end of the fifteenth coil section 78W5, the eighth power input line 82U6-V6 connects the end of the sixteenth coil section 78U6 to the starting end of the seventeenth coil section 78V6, and the ninth power input line 82W6-U1 connects the end of the eighteenth coil section 78W6 to the starting end of the first coil section 78U1.

[0463] The first power input line 82V1-W1, the second power input line 82U2-V2, the third power input line 82W2-U3, the fourth power input line 82V3-W3, the fifth power input line 82U4-V4, the sixth power input line 82W4-U5, the seventh power input line 82V5-W5, the eighth power input line 82U6-V6, and the ninth power input line 82W6-U1 are wired continuously. Further, the first power input line 82V1-W1, the second power input line 82U2-V2, the third power input line 82W2-U3, the fourth power input line 82V3-W3, the fifth power input line 82U4-V4, the sixth power input line 82W4-U5, the seventh power input line 82V5-W5, the eighth power input line 82U6-V6, and the ninth power input line 82W6-U1 are disposed on one axial side Z2 of the core 50. The third power input line 82W2-U3, the sixth power input line 82W4-U5, and the ninth power input line 82W6-U1 have connection portions that connect ends of the windings 70 together. The third power input line 82W2-U3 has a first connection portion 92 connecting the ending end 82D of the first winding 72 and the starting end 82E of the second winding 74, the sixth power input line 82W4-U5 has a second connection portion 94 connecting the ending end 82F of the second winding 74 and the starting end 82G of the third winding 76, and the ninth power input line 82W6-U1 has a third connection portion 96 connecting the ending end 82H of the third winding 76 and the starting end 82C of the first winding 72.

[0464] The first jumper 84U1-U2 connects the end of the first coil section 78U1 to the start of the fourth coil section 78U2, the second jumper 84V2-V1 connects the end of the fifth coil section 78V2 to the start of the second coil section 78V1, the third jumper 84W1-W2 connects the end of the third coil section 78W1 to the start of the sixth coil section 78W2, the fourth jumper 84U3-U4 connects the end of the seventh coil section 78U3 to the start of the tenth coil section 78U4, and the fifth jumper 84V4-V3 connects the end of the eleventh coil section 78V4. and the starting end of the eighth coil section 78V3, the sixth jumper 84W3-W4 connects the end of the ninth coil section 78W3 and the starting end of the twelfth coil section 78W4, the seventh jumper 84U5-U6 connects the end of the thirteenth coil section 78U5 and the starting end of the sixteenth coil section 78U6, the eighth jumper 84V6-V5 connects the end of the seventeenth coil section 78V6 and the starting end of the fourteenth coil section 78V5, and the ninth jumper 84W5-W6 connects the end of the fifteenth coil section 78W5 and the starting end of the eighteenth coil section 78W6.

[0465] The first crossover wire 84U1-U2, the second crossover wire 84V2-V1, the third crossover wire 84W1-W2, the fourth crossover wire 84U3-U4, the fifth crossover wire 84V4-V3, the sixth crossover wire 84W3-W4, the seventh crossover wire 84U5-U6, the eighth crossover wire 84V6-V5, and the ninth crossover wire 84W5-W6 are arranged on one axial side Z2 of the core 50.

[0466] Furthermore, in the winding process of the seventh embodiment, of the multiple coil sections 78, the U-phase coil sections U1 to U6 and the W-phase coil sections W1 to W6 are wound by moving the first nozzle 122, the second nozzle 124, and the third nozzle 126 to one circumferential side R1 of the core 50, and the V-phase coil sections V1 to V6 are wound by moving the first nozzle 122, the second nozzle 124, and the third nozzle 126 to the other circumferential side R2 of the core 50.

[0467] After the winding process, for example, each of the split cores 56 is cut off from the temporary joint molding runner 106 and connected in an annular shape with the teeth portions 54 facing radially inward.

[0468] (Winding shaping process) In the seventh embodiment, the multiple connection terminals 98 are changed from those in the first embodiment to a first connection terminal 98C, a second connection terminal 98B, a third connection terminal 98A, a fourth connection terminal 98C2, a fifth connection terminal 98B2, a sixth connection terminal 98A2, a seventh connection terminal 98C3, an eighth connection terminal 98B3, and a ninth connection terminal 98A3. The first connection terminal 98C is disposed between the second coil portion 78V1 and the third coil portion 78W1, the second connection terminal 98B is disposed between the fourth coil portion 78U2 and the fifth coil portion 78V2, the third connection terminal 98A is disposed between the sixth coil portion 78W2 and the seventh coil portion 78U3, the fourth connection terminal 98C2 is disposed between the eighth coil portion 78V3 and the ninth coil portion 78W3, and the fifth connection terminal 98B2 is disposed between the tenth coil portion 78U4 and the eleventh coil portion 78U5. The sixth connection terminal 98A2 is arranged between the twelfth coil portion 78W4 and the thirteenth coil portion 78U5, the seventh connection terminal 98C3 is arranged between the fourteenth coil portion 78V5 and the fifteenth coil portion 78W5, the eighth connection terminal 98B3 is arranged between the sixteenth coil portion 78U6 and the seventeenth coil portion 78V6, and the ninth connection terminal 98A3 is arranged between the first coil portion 78U1 and the eighteenth coil portion 78W6.

[0469] In the winding shaping process, similarly to the first embodiment, the first power input line 82V1-W1 is shaped so that the first connection portion C1 of the first power input line 82V1-W1 moves to the first connection terminal 98C. The first connection terminal 98C is, for example, hook-shaped, and the first connection portion C1 is engaged with the first connection terminal 98C.

[0470] Similarly, the second power input line 82U2-V2 is shaped so that the second connection portion B1 of the second power input line 82U2-V2 moves to the second connection terminal 98B. The second connection terminal 98B is, for example, hook-shaped, and the second connection portion B1 is engaged with the second connection terminal 98B.

[0471] Similarly, the third power input line 82W2-U3 is shaped so that the third connection portion A2 of the third power input line 82W2-U3 moves to the third connection terminal 98A. The third connection terminal 98A is, for example, hook-shaped, and the third connection portion A1 is engaged with the third connection terminal 98A.

[0472] Similarly, the fourth power input line 82V3-W3 is shaped so that the fourth connection portion C2 of the fourth power input line 82V3-W3 moves to the fourth connection terminal 98C2. The fourth connection terminal 98C2 is, for example, hook-shaped, and the fourth connection portion C2 is engaged with the fourth connection terminal 98C2.

[0473] Similarly, the fifth power input line 82U4-V4 is shaped so that the fifth connection portion B2 of the fifth power input line 82U4-V4 moves to the fifth connection terminal 98B2. The fifth connection terminal 98B2 is, for example, hook-shaped, and the fifth connection portion B2 is engaged with the fifth connection terminal 98B2.

[0474] Similarly, the sixth power input line 82W4-U5 is shaped so that the sixth connection portion A3 of the sixth power input line 82W4-U5 moves to the sixth connection terminal 98A2. The sixth connection terminal 98A2 is, for example, hook-shaped, and the sixth connection portion A2 is engaged with the sixth connection terminal 98A2.

[0475] Similarly, the seventh power input line 82V5-W5 is shaped so that the seventh connection portion C3 of the seventh power input line 82V5-W5 moves to the seventh connection terminal 98C3. The seventh connection terminal 98C3 is, for example, hook-shaped, and the seventh connection portion C3 is engaged with the seventh connection terminal 98C3.

[0476] Similarly, the eighth power input line 82U6-V6 is shaped so that the eighth connection portion B3 of the eighth power input line 82U6-V6 moves to the eighth connection terminal 98B3. The eighth connection terminal 98B3 is, for example, hook-shaped, and the eighth connection portion B3 is engaged with the eighth connection terminal 98B3.

[0477] Similarly, the ninth power input line 82W6-U1 is shaped so that the ninth connection portion A1 of the ninth power input line 82W6-U1 moves to the ninth connection terminal 98A3. The ninth connection terminal 98A3 is, for example, hook-shaped, and the ninth connection portion A3 is engaged with the ninth connection terminal 98A3.

[0478] (Wiring process) In the connection step, the first connection terminal 98C and the first connection portion C1 are connected by, for example, fusing. Similarly, the second connection terminal 98B and the second connection portion B1 are connected, for example, by a fusing process, the third connection terminal 98A and the third connection portion A1 are connected, for example, by a fusing process, the fourth connection terminal 98C2 and the fourth connection portion C2 are connected, for example, by a fusing process, the fifth connection terminal 98B2 and the fifth connection portion B2 are connected, for example, by a fusing process, the sixth connection terminal 98A2 and the sixth connection portion A2 are connected, for example, by a fusing process, the seventh connection terminal 98C3 and the seventh connection portion C3 are connected, for example, by a fusing process, the eighth connection terminal 98B3 and the eighth connection portion B3 are connected, for example, by a fusing process, and the ninth connection terminal 98A3 and the ninth connection portion A3 are connected, for example, by a fusing process. In this manner, in the wiring process, the first power input line 82V1-W1, the second power input line 82U2-V2, the fourth power input line 82V3-W3, the fifth power input line 82U4-V4, the seventh power input line 82V5-W5, and the ninth power input line 82W6-U1 are each connected to the first connection terminal 98C, the second connection terminal 98B, the fourth connection terminal 98C2, the fifth connection terminal 98B2, the seventh connection terminal 98C3, and the eighth connection terminal 98C4. The winding starting end 82E of the second winding 74 and the winding ending end 82D of the first winding 72 are each connected to the third connection terminal 98A, the winding starting end 82G of the third winding 76 and the winding ending end 82F of the second winding 74 are each connected to the sixth connection terminal 98A2, and the winding starting end 82C of the first winding 72 and the winding ending end 82H of the third winding 76 are each connected to the ninth connection terminal 98A3.

[0479] As in the first embodiment, the first connection portion C1 of the first power input line 82V1-W1 is engaged with the first connection terminal 98C, and the first power input line 82V1-W1 is connected by fusing. Similarly, the second power input line 82U2-V2, the fourth power input line 82V3-W3, the fifth power input line 82U4-V4, the seventh power input line 82V5-W5, and the eighth power input line 82U6-V6 are also connected.

[0480] Also, as in the first embodiment, the winding start end 82E of the second winding 74 and the winding end 82D of the first winding 72 are engaged with the third connection terminal 98A, and a connection is formed by fusing. This forms the third power input line 82W2-U3. Similarly, the winding start end 82G of the third winding 76 and the winding end 82F of the second winding 74 are engaged with the sixth connection terminal 98A2, and a connection is formed by fusing. This forms the sixth power input line 82W4-U5. Similarly, the winding start end 82C of the first winding 72 and the winding end 82H of the third winding 76 are engaged with the ninth connection terminal 98A3, and a connection is formed by fusing. This forms the ninth power input line 82W6-U1.

[0481] (Assembly process) In the seventh embodiment, the assembly process is similar to that in the fourth embodiment. In the seventh embodiment of the method for manufacturing the rotating electric machine 10, the rotating electric machine 10 (see FIG. 1) is manufactured in the above-described manner.

[0482] (Action and Effects) In the seventh embodiment described above, the same functions and effects as those of the fourth embodiment can be obtained with respect to the same configuration and method as those of the fourth embodiment.

[0483] 28, in the winding process in the seventh embodiment, the first nozzle 122, the second nozzle 124, and the third nozzle 126 move to one circumferential side R1 of the core 50 to wind the teeth portions 54 of two phases out of the U, V, and W phases, and the first nozzle 122, the second nozzle 124, and the third nozzle 126 move to the other circumferential side R2 of the core 50 to wind the teeth portions 54 of one phase out of the U, V, and W phases, thereby forming a plurality of coil portions 78. As a result, it becomes possible to wind the first winding 72, the second winding 74, and the third winding 76 with a continuous wire around the plurality of teeth portions 54, thereby improving productivity.

[0484] Moreover, the multiple power input lines 82 are arranged on one axial side Z2 of the core 50, and the multiple crossover lines 84 are arranged on the one axial side Z2 of the core 50. Therefore, the space on the other axial side Z1 can be minimized.

[0485] In particular, the rotating electric machine 10 is an inner rotor type brushless motor in which multiple teeth 54 extend radially inward of the core 50, and according to the seventh embodiment, it is possible to realize a small, high-output, and low-cost inner rotor type brushless motor.

[0486] Furthermore, each of the multiple power input lines 82 is wired across two teeth portions 54. Therefore, the distance between both ends of the power input lines 82 and the distance between both ends of the jumper lines 84 are sufficiently secured, which also makes it possible to prevent the jumper lines 84 between the coil portions 78 and the power input lines 82 from becoming entangled in a complicated manner.

[0487] Moreover, each of the multiple jumper wires 84 is wired across two or 2 × 2 tooth portions 54. Therefore, the distance between both ends of the power input wire 82 and the distance between both ends of the jumper wire 84 are sufficiently secured, which also makes it possible to prevent the jumper wires 84 between the coil portions 78 and the power input wires 82 from becoming entangled in a complicated manner.

[0488] In the seventh embodiment, as an example, a first nozzle 122, a second nozzle 124, and a third nozzle 126 are used, and a first winding 72, a second winding 74, and a third winding 76, which are three continuous wires, are wound in sequence around the multiple teeth portions 54 by a triple nozzle method. Therefore, compared to the third embodiment described above, in which one nozzle 120 (see FIG. 4) is used and a single continuous wire 70 is wound in sequence around the multiple teeth portions 54 by a single nozzle method, the number of steps in the winding process can be reduced to one-third. This allows the process time to be shortened, and therefore the manufacturing costs to be reduced.

[0489] (Modification) Next, a modification of the seventh embodiment will be described.

[0490] The stator 20 according to the seventh embodiment has m=2 and n=3 as an example of an m-series, n-parallel delta connection where m is a natural number of 2 or more, but the manufacturing method of the stator 20 according to the seventh embodiment is applicable to all three-phase brushless motors in which n is a multiple of 3 and the number of slots, teeth portions 54, and coil portions 78 is a multiple of 9 and is 18 or more. Examples include 18 (m=2 and n=3), 27 (m=3 and n=3), 36 (m=2 and n=6, or m=4 and n=3), 45 (or m=5 and n=3), etc.

[0491] 30, the temporary connection molding runner 106 may be modified as follows. That is, the temporary connection molding runner 108 extends from the opposite faces of the teeth portions 54 of the multiple split cores 56 and is connected to each other in a roughly annular shape. In this case, the multiple split cores 56 are arranged in a ring shape such that the tips of the multiple teeth portions 54 are located on the outer periphery of the core 50.

[0492] In this case, the first winding 72 is wound around each of the split cores 56 by moving the first nozzle 122 from any one of the split cores 56 arranged in an annular shape to a split core 56 located on one circumferential side R1 of the temporary coupling molding runner 108 with respect to one of the split cores 56 and performing the above-mentioned winding process. The second winding 74 is wound around each of the split cores 56 by moving the second nozzle 124 from any one of the split cores 56 arranged in an annular shape to a split core 56 located 120° away in the circumferential direction from the temporary coupling molding runner 108 to a split core 56 located on one circumferential side R1 of the temporary coupling molding runner 108 in the same manner as the first winding 72. In addition, the third winding 76 is wound around each of the split cores 56 by performing the above-mentioned winding winding process from one of the split cores 56 arranged in an annular shape, that is, the split core 56 located 240° circumferentially away from the temporary joint molding runner 108, to the split core 56 located on one circumferential side R1 of the temporary joint molding runner 108, in the same manner as the first winding 72.

[0493] In this case, similarly to the modified example of the first embodiment, after the winding 70 is wound around the core 50, it is turned over so that the tips of the multiple teeth 54 are positioned on the inner periphery of the core 50.

[0494] This modified example is not limited to the triple nozzle system. Instead of the first nozzle 122, the second nozzle 124, and the third nozzle 126, the first flyer 112, the second flyer 114, and the third flyer 116 may be used, and the first flyer 112, the second flyer 114, and the third flyer 116 may be moved to wind the core 50.

[0495] 31, the temporary joint molding runner 106 may be changed to a jig 100 having a generally triangular shape in a plan view, and the first nozzle 122, the second nozzle 124, and the third nozzle 126 may be changed to a first flyer 112, a second flyer 114, and a third flyer 116 to form a triple flyer system. In this case, the split cores 56 are connected in an annular shape such that the tips of the teeth 54 are located on the outer periphery of the core 50. As a result, the first winding 72 is wound around the core 50 by the first flyer 112 performing the above-mentioned winding winding process in the circumferential direction from the split core 56 located at one corner 102 of the jig 100. Similarly, the second winding 74 and the third winding 76 are wound around each of the split cores 56 by the second flyer 114 and the third flyer 116 performing the above-mentioned winding winding process in a circumferential direction from the split core 56 located at the remaining corner 102 of the jig 100.

[0496] In this case, similarly to the modified example of the first embodiment, after the winding process, the core 50 is inverted as shown in Fig. 12. The core 50 is then inverted so that it changes from a state in which the tips of the teeth 54 are connected in an annular shape so as to be located on the outer periphery of the core 50 as shown in Fig. 12, to a band-like state as shown in Fig. 13, and then to a state in which the tips of the teeth 54 are connected in an annular shape so as to be located on the inner periphery of the core 50 (see Fig. 7).

[0497] After the core 50 has been inverted, the rotating electric machine 10 (see FIG. 1) is manufactured in the same manner as in the winding shaping process described above and subsequent steps.

[0498] In the seventh embodiment, the multiple connection terminals 98 are changed to the first connection terminal 98C to the ninth connection terminal 98A3 from the first embodiment, but may be the first connection terminal 98C to the third connection terminal 98A as in the first embodiment. In that case, the fourth connection portion C2 to the ninth connection portion A3 are connected to the first connection terminal 98C to the third connection terminal 98A, respectively, together with the first connection portion C1 to the third connection portion A1.

[0499] In the seventh embodiment, the same modified examples as those in the fourth embodiment can be adopted for the same configurations and methods as those in the fourth embodiment.

[0500] In the winding process according to the seventh embodiment, the coil portion V1 to V6 of the U-phase, V-phase, and W-phase coils is wound by moving the first nozzle 122, the second nozzle 124, and the third nozzle 126 to the other circumferential side R2 of the core 50. However, the winding process according to the present embodiment is not limited to this. For example, the coil portions U1 to U6 of the U-phase or the coil portions W1 to W6 of the W-phase may be wound by moving the first nozzle 122, the second nozzle 124, and the third nozzle 126 to the other circumferential side R2 of the core 50. Even in this case, the first winding 72, the second winding 74, and the third winding 76 can be wound around the multiple teeth portions 54 by a continuous wire, which can improve productivity.

[0501] [Eighth embodiment of the manufacturing method of a rotating electric machine] Next, an eighth embodiment of the method for manufacturing the rotating electric machine 10 according to an embodiment of the present invention will be described.

[0502] In the eighth embodiment of the method for manufacturing the rotating electric machine 10, the core setting process is similar to that in the first embodiment of the method for manufacturing the rotating electric machine 10. On the other hand, in the eighth embodiment of the method for manufacturing the rotating electric machine 10, the following changes are made to the first embodiment of the method for manufacturing the rotating electric machine 10.

[0503] (Winding connection configuration) In the eighth embodiment of the manufacturing method for the rotating electric machine 10, as an example of a k-series, n-parallel delta connection where k is an even number and n is a natural number, the coil portions 78 are delta connected in a 4-series manner. That is, in the eighth embodiment of the manufacturing method for the rotating electric machine 10, k=4 and n=1, and the number of slots, teeth portions 54, and coil portions 78 is 12.

[0504] To specifically explain the wiring configuration of the multiple coil sections 78 that are delta-connected in a four-series system, four coil sections 78 of the same phase are connected in series in groups of four (k=4) to form one coil row 78A. Furthermore, three coil groups 80 each consisting of the four coil sections 78 of the same phase are connected in a delta shape (triangle).

[0505] (Winding process) In the winding process of the eighth embodiment, as in the first embodiment, one nozzle 120 (see FIG. 4) is used as an example, and the winding 70, which is a single continuous wire, is wound sequentially around the teeth portions 54 by the single nozzle method. FIG 32 is a diagram of the winding process of the eighth embodiment, and Table 8 is a process chart showing the winding order of the winding process of the eighth embodiment.

[0506] In the winding process in the eighth embodiment, the winding 70 is wound in the following order of steps 1 to 12. In the drawing, circled numbers 1 to 12 indicate the order in which the multiple coil portions 78 are formed.

[0507] (First Step) In a first step, the winding 70 is wound around the first teeth portion 54U1 from one axial side Z2 of the core 50. Also, the winding is wound counterclockwise as viewed in the axial direction for an integer+0.5 turns to form the first coil portion 78U1.

[0508] Thereafter, the winding 70 is routed from the other axial side Z1 to one circumferential side R1 across the fourth coil portion 54U2 to form a first crossover wire 84U1-U2.

[0509] (Second step) In the second step, the winding 70 is wound counterclockwise from the other axial side Z1 of the core 50 to the fourth tooth portion 54U2 by an integer+0.5 number of turns when viewed from the axial direction to form the fourth coil portion 78U2, and then is led out to one axial side Z2 of the core 50.

[0510] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the seventh coil portion 54U3 to form a fourth crossover wire 84U2-U3.

[0511] (Third Step) In a third step, the winding 70 is wound around the seventh tooth portion 54U3 from one axial side Z2 of the core 50. Also, the seventh coil portion 78U3 is formed by winding the winding a number of turns that is an integer + 0.5 in a counterclockwise direction as viewed in the axial direction.

[0512] Thereafter, the winding 70 is routed from the other axial side Z1 to the one circumferential side R1 across the tenth coil portion 54U4 to form a seventh crossover wire 84U3-U4.

[0513] (Fourth step) In the fourth step, the winding 70 is wound counterclockwise from the other axial side Z1 of the core 50 to the tenth tooth portion 54U4 for an integer + 0.5 number of turns when viewed from the axial direction to form the tenth coil portion 78U4, and then led out to one axial side Z2 of the core 50.

[0514] Thereafter, the winding 70 is returned from one axial side Z2 of the core 50 to between the tenth teeth portion 54U4 and the eleventh teeth portion 54V4 and wired across the eleventh coil portion 54V4, and the second power input line 82U4-V4 is formed by a continuous wire.

[0515] (5th step) In a fifth step, the winding 70 is wound around the eleventh tooth portion 54V4 from one axial side Z2 of the core 50. Also, the winding is wound counterclockwise as viewed in the axial direction for an integer+0.5 number of turns to form an eleventh coil portion 78V4.

[0516] Thereafter, the winding 70 is routed from the other axial side Z1 to the other circumferential side R2 across the eighth coil portion 54V3, forming an eighth jumper 84V4-V3.

[0517] (Sixth step) In the sixth step, the winding 70 is wound counterclockwise from the other axial side Z1 of the core 50 to the eighth tooth portion 54V3 when viewed from the axial direction by an integer+0.5 number of turns to form the eighth coil portion 78V3, and then led out to one axial side Z2 of the core 50.

[0518] Thereafter, the winding 70 is routed from one axial side Z2 to the other circumferential side R2 across the fifth coil portion 54V2 to form a fifth jumper 84V3-V2.

[0519] (Seventh step) In a seventh step, the winding 70 is wound around the fifth teeth portion 54V2 from one axial side Z2 of the core 50. Also, the winding is wound counterclockwise as viewed in the axial direction for an integer+0.5 number of turns to form a fifth coil portion 78V2.

[0520] Thereafter, the winding 70 is routed from the other axial side Z1 to the other circumferential side R2 across the second coil portion 54V1 to form a second jumper 84V2-V1.

[0521] (Step 8) In the eighth step, the winding 70 is wound counterclockwise from the other axial side Z1 of the core 50 to the second teeth portion 54V1 for an integer + 0.5 number of turns when viewed from the axial direction to form the second coil portion 78V1, and then led out to one axial side Z2 of the core 50.

[0522] Thereafter, the winding 70 is returned from one axial side Z2 of the core 50 to between the second teeth portion 54V1 and the third teeth portion 54W1 and wired across the third coil portion 54W1, and the first power input line 82V1-W1 is formed by a continuous wire.

[0523] (9th step) In a ninth step, the winding 70 is wound around the third teeth portion 54W1 from one axial side Z2 of the core 50. Also, the winding is wound counterclockwise as viewed in the axial direction for an integer+0.5 turns to form the third coil portion 78W1.

[0524] Thereafter, the winding 70 is routed from the other axial side Z1 to the one circumferential side R1 across the sixth coil portion 54W2 to form a third jumper 84W1-W2.

[0525] (Step 10) In the tenth step, the winding 70 is wound counterclockwise from the other axial side Z1 of the core 50 to the sixth teeth portion 54W2 for an integer + 0.5 number of turns when viewed from the axial direction to form the sixth coil portion 78W2, and then led out to one axial side Z2 of the core 50.

[0526] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the ninth coil portion 54W3 to form a sixth jumper 84W2-W3.

[0527] (Step 11) In an eleventh step, the winding 70 is wound around the ninth tooth portion 54W3 from one axial side Z2 of the core 50. Also, the ninth coil portion 78W3 is formed by winding the winding a number of turns that is an integer+0.5 in a counterclockwise direction as viewed in the axial direction.

[0528] Thereafter, the winding 70 is routed from the other axial side Z1 to the one circumferential side R1 across the twelfth coil portion 54W4 to form a ninth crossover wire 84W3-W4.

[0529] (Step 12) In the 12th step, the winding 70 is wound counterclockwise from the other axial side Z1 of the core 50 to the 12th tooth portion 54W4 for an integer + 0.5 number of turns when viewed from the axial direction to form the 12th coil portion 78W4, and then led out to the one axial side Z2 of the core 50.

[0530] Thereafter, the winding 70 is routed over the winding-start end 82A of the winding 70 on one axial side Z2 of the core 50, and a third power input line 82W4-U1 is formed by a wiring process.

[0531] [Table 8]

[0532] In the eighth embodiment, a four-series delta connection is formed in the above manner.

[0533] In addition, the first crossover 84U1-U2, the second crossover 84V2-V1, the third crossover 84W1-W2, the seventh crossover 84U3-U4, the eighth crossover 84V4-V3, and the ninth crossover 84W3-W4 correspond to "some of the crossovers" in the present invention, and the fourth crossover 84U2-U3, the fifth crossover 84V3-V2, and the sixth crossover 84W2-W3 correspond to the "remaining crossovers" in the present invention.

[0534] Each of the multiple power input lines 82 is led out from between adjacent teeth portions 54. Each of the multiple first direction crossover wires is wired across two teeth portions 54, and each of the multiple second direction crossover wires is wired across 2 × 2 teeth portions 54.

[0535] 32, the first power input line 82V1-W1, the second power input line 82U4-V4, and the third power input line 82W4-U1 are arranged on one axial side Z2 of the core 50, and the first crossover 84U1-U2, the second crossover 84V2-V1, the third crossover 84W1-W2, the seventh crossover 84U3-U4, the eighth crossover 84V4-V3, and the ninth crossover 84W3-W4 are arranged on one axial side Z2 of the core 50. In addition, the fourth crossover 84U2-U3, the fifth crossover 84V3-V2, and the sixth crossover 84W2-W3 are arranged on the other axial side Z1 of the core 50.

[0536] Furthermore, in the winding process of the eighth embodiment, of the multiple coil sections 78, the U-phase coil sections U1 to U4 and the W-phase coil sections W1 to W4 are wound by moving the nozzle 120 to one circumferential side R1 of the core 50, and the V-phase coil sections V1 to V4 are wound by moving the nozzle 120 to the other circumferential side R2 of the core 50.

[0537] After the winding process, for example, each of the split cores 56 is cut off from the temporary joint molding runner 106 and connected in an annular shape with the teeth portions 54 facing radially inward.

[0538] (winding shaping process, wire connection process and assembly process) In the eighth embodiment, the winding shaping process, the wire connection process, and the assembly process are similar to those in the first embodiment. In the eighth embodiment of the method for manufacturing the rotating electric machine 10, the rotating electric machine 10 (see FIG. 1) is manufactured in the above-described manner.

[0539] (Action and Effects) In the eighth embodiment described above, the same functions and effects as those of the first embodiment can be obtained with respect to the same configuration and method as those of the first embodiment.

[0540] 32, in the winding process in the eighth embodiment, the nozzle 120 moves to one circumferential side R1 of the core 50 to wind the teeth portions 54 of two phases out of the U, V, and W phases, and moves to the other circumferential side R2 of the core 50 to wind the teeth portions 54 of one phase out of the U, V, and W phases, thereby forming a plurality of coil portions 78. As a result, it becomes possible to wind the winding 70 around the plurality of teeth portions 54 with a continuous wire, thereby improving productivity.

[0541] In particular, the rotating electric machine 10 is an inner rotor type brushless motor in which multiple teeth 54 extend radially inward from the core 50, and according to the eighth embodiment, it is possible to realize a small, high-output, and low-cost inner rotor type brushless motor.

[0542] Further, the multiple power input wires 82 are arranged on one axial side Z2 of the core 50, and among the multiple crossover wires 84, the first crossover wire 84U1-U2, the second crossover wire 84V2-V1, the third crossover wire 84W1-W2, the seventh crossover wire 84U3-U4, the eighth crossover wire 84V4-V3, and the ninth crossover wire 84W3-W4 are arranged on the other axial side Z1 of the core 50, and the fourth crossover wire 84U2-U3, the fifth crossover wire 84V3-V2, and the sixth crossover wire 84W2-W3 are arranged on the one axial side Z2 of the core 50 without intersecting with the multiple power input wires 82. Therefore, since the multiple power input wires 82 and the multiple crossover wires 84 do not intersect with each other, it is possible to prevent the power input wires 82 and the crossover wires 84 from becoming entangled with each other in the winding shaping process.

[0543] Furthermore, since the multiple power input lines 82 and the multiple crossover lines 84 do not intersect with each other, they can be accommodated orderly on the one axial side Z2 and the other axial side Z1 in the assembly process.

[0544] Moreover, each of the multiple power input lines 82 is led out from between adjacent teeth portions 54. Therefore, while a sufficient gap is ensured between both ends of the jumper wire 84, the gap between both ends of the power input line 82 is narrowed, which makes it possible to prevent the jumper wires 84 between the coil portions 78 and the power input lines 82 from becoming entangled in a complicated manner.

[0545] Moreover, each of the multiple jumper wires 84 is wired across two or 2 × 2 tooth portions 54. Therefore, the distance between both ends of the power input wire 82 and the distance between both ends of the jumper wire 84 are sufficiently secured, which also makes it possible to prevent the jumper wires 84 between the coil portions 78 and the power input wires 82 from becoming entangled in a complicated manner.

[0546] (Modification) Next, a modification of the eighth embodiment will be described.

[0547] The stator 20 according to the eighth embodiment has k=4 and n=1 as an example of a k-series, n-parallel delta connection where k is an even number and n is a natural number, but the manufacturing method of the stator 20 according to the eighth embodiment can be applied to all three-phase brushless motors in which the number of slots, teeth portions 54, and coil portions 78 is a multiple of 6 and is 6 or more. For example, the numbers of slots, teeth portions 54, and coil portions 78 can be 6 (k=2 and n=1), 12 (k=4 and n=1), 18 (k=6 and n=1), 24 (k=8 and n=1), 30 (k=10 and n=1), 36 (k=12 and n=1), etc.

[0548] In the eighth embodiment, the same modified examples as those in the first embodiment can be adopted for the same configurations and methods as those in the first embodiment.

[0549] In the winding process according to the eighth embodiment, the V-phase coil parts V1 to V4 of the U-phase, V-phase, and W-phase coils are wound by moving the nozzle 120 to the other circumferential side R2 of the core 50, but the winding process according to the present embodiment is not limited to this. For example, the U-phase coil parts U1 to U4 or the W-phase coil parts W1 to W4 may be wound by moving the nozzle 120 to the other circumferential side R2 of the core 50. Even in this case, it is possible to wind the first winding 72 and the second winding 74 around the multiple teeth parts 54 with a continuous wire, thereby improving productivity.

[0550] [Ninth embodiment of manufacturing method of rotating electric machine] Next, a ninth embodiment of the method for manufacturing the rotating electric machine 10 according to an embodiment of the present invention will be described.

[0551] In the ninth embodiment of the method for manufacturing the rotating electric machine 10, the core setting step is similar to that of the eighth embodiment of the method for manufacturing the rotating electric machine 10. Meanwhile, in the ninth embodiment of the method for manufacturing the rotating electric machine 10, the winding winding step is changed as follows, compared to the eighth embodiment of the method for manufacturing the rotating electric machine 10.

[0552] (Winding process) In the winding process of the ninth embodiment, as in the first embodiment, one nozzle 120 (see FIG. 4) is used as an example, and the winding 70, which is a single continuous wire, is wound sequentially around the teeth portions 54 by the single nozzle method. FIG 33 is a diagram of the winding process of the ninth embodiment, and Table 9 is a process chart showing the winding order of the winding process of the ninth embodiment.

[0553] In the winding process in the ninth embodiment, the winding 70 is wound in the following order of steps 1 to 12. In the drawing, the circled numbers 1 to 12 indicate the order in which the multiple coil portions 78 are formed.

[0554] (First Step) In a first step, the winding 70 is wound around the first teeth portion 54U1 from one axial side Z2 of the core 50. Also, the winding is wound clockwise as viewed in the axial direction for an integer+0.5 turns to form the first coil portion 78U1.

[0555] Thereafter, the winding 70 is routed from the other axial side Z1 to one circumferential side R1 across the fourth coil portion 54U2 to form a first crossover wire 84U1-U2.

[0556] (Second step) In the second step, the winding 70 is wound clockwise from the other axial side Z1 of the core 50 to the fourth teeth portion 54U2 for an integer+0.5 number of turns when viewed from the axial direction to form the fourth coil portion 78U2, and then is led out to one axial side Z2 of the core 50.

[0557] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the seventh coil portion 54U3 to form a fourth crossover wire 84U2-U3.

[0558] (Third Step) In a third step, the winding 70 is wound around the seventh tooth portion 54U3 from one axial side Z2 of the core 50. Also, the seventh coil portion 78U3 is formed by winding the winding a number of turns that is an integer + 0.5 in a clockwise direction as viewed in the axial direction.

[0559] Thereafter, the winding 70 is routed from the other axial side Z1 to the one circumferential side R1 across the tenth coil portion 54U4 to form a seventh crossover wire 84U3-U4.

[0560] (Fourth step) In the fourth step, the winding 70 is wound clockwise from the other axial side Z1 of the core 50 to the tenth tooth portion 54U4 for an integer + 0.5 number of turns when viewed from the axial direction to form the tenth coil portion 78U4, and then led out to one axial side Z2 of the core 50.

[0561] Thereafter, the winding 70 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the second power input line 82U4-V4 is formed by a continuous wire across the eleventh coil portion 54V4.

[0562] (5th step) In a fifth step, the winding 70 is wound around the eleventh tooth portion 54V4 from one axial side Z2 of the core 50. Also, the winding is wound clockwise as viewed in the axial direction by an integer+0.5 number of turns to form an eleventh coil portion 78V4.

[0563] Thereafter, the winding 70 is routed from the other axial side Z1 to the other circumferential side R2 across the eighth coil portion 54V3, forming an eighth jumper 84V4-V3.

[0564] (Sixth step) In the sixth step, the winding 70 is wound clockwise from the other axial side Z1 of the core 50 to the eighth tooth portion 54V3 for an integer + 0.5 number of turns as viewed from the axial direction to form the eighth coil portion 78V3, and then led out to one axial side Z2 of the core 50.

[0565] Thereafter, the winding 70 is routed from one axial side Z2 to the other circumferential side R2 across the fifth coil portion 54V2 to form a fifth jumper 84V3-V2.

[0566] (Seventh step) In a seventh step, the winding 70 is wound around the fifth teeth portion 54V2 from one axial side Z2 of the core 50. Also, the fifth coil portion 78V2 is formed by winding the winding a number of turns that is an integer + 0.5 in a clockwise direction as viewed in the axial direction.

[0567] Thereafter, the winding 70 is routed from the other axial side Z1 to the other circumferential side R2 across the second coil portion 54V1 to form a second jumper 84V2-V1.

[0568] (Step 8) In the eighth step, the winding 70 is wound clockwise from the other axial side Z1 of the core 50 to the second teeth portion 54V1 for an integer + 0.5 number of turns when viewed from the axial direction to form the second coil portion 78V1, and then led out to one axial side Z2 of the core 50.

[0569] Thereafter, the winding 70 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the first power input line 82V1-W1 across the third coil portion 54W1 is formed by a continuous wire.

[0570] (9th step) In a ninth step, the winding 70 is wound around the third teeth portion 54W1 from one axial side Z2 of the core 50. Also, the winding is wound clockwise as viewed in the axial direction for an integer+0.5 turns to form the third coil portion 78W1.

[0571] Thereafter, the winding 70 is routed from the other axial side Z1 to the one circumferential side R1 across the sixth coil portion 54W2 to form a third jumper 84W1-W2.

[0572] (Step 10) In the tenth step, the winding 70 is wound clockwise from the other axial side Z1 of the core 50 to the sixth teeth portion 54W2 for an integer+0.5 number of turns when viewed from the axial direction to form the sixth coil portion 78W2, and then led out to one axial side Z2 of the core 50.

[0573] Thereafter, the winding 70 is routed from one axial side Z2 to one circumferential side R1 across the ninth coil portion 54W3 to form a sixth jumper 84W2-W3.

[0574] (Step 11) In an eleventh step, the winding 70 is wound around the ninth tooth portion 54W3 from one axial side Z2 of the core 50. Also, the ninth coil portion 78W3 is formed by winding the winding a number of turns that is an integer + 0.5 in the clockwise direction as viewed in the axial direction.

[0575] Thereafter, the winding 70 is routed from the other axial side Z1 to the one circumferential side R1 across the twelfth coil portion 54W4 to form a ninth crossover wire 84W3-W4.

[0576] (Step 12) In the 12th step, the winding 70 is wound clockwise from the other axial side Z1 of the core 50 to the 12th tooth portion 54W4 for an integer + 0.5 turns when viewed from the axial direction to form the 12th coil portion 78W4, and then led out to the one axial side Z2 of the core 50.

[0577] Thereafter, the winding 70 is wired from the other axial side Z1 of the core 50 to one circumferential side R1 to the winding starting end 82A of the winding 70, and a connection portion 90 is formed by a wiring process described below, thereby forming the third power input line 82W4-U1.

[0578] [Table 9]

[0579] In the ninth embodiment, a four-series delta connection is formed in the above manner.

[0580] In addition, the first crossover 84U1-U2, the second crossover 84V2-V1, the third crossover 84W1-W2, the seventh crossover 84U3-U4, the eighth crossover 84V4-V3, and the ninth crossover 84W3-W4 correspond to "some of the crossovers" in the present invention, and the fourth crossover 84U2-U3, the fifth crossover 84V3-V2, and the sixth crossover 84W2-W3 correspond to the "remaining crossovers" in the present invention.

[0581] Each of the multiple power input lines 82 is wired across two teeth portions 54. Each of the multiple first direction crossover wires is wired across 2 × 2 teeth portions 54, and each of the multiple second direction crossover wires is wired across two teeth portions 54.

[0582] 33, the first power input line 82V1-W1, the second power input line 82U4-V4, and the third power input line 82W4-U1 are arranged on one axial side Z2 of the core 50, and the first crossover 84U1-U2, the second crossover 84V2-V1, the third crossover 84W2-W3, the seventh crossover 84U3-U4, the eighth crossover 84V4-V3, and the ninth crossover 84W3-W4 are arranged on one axial side Z2 of the core 50. In addition, the fourth crossover 84U2-U3, the fifth crossover 84V3-V2, and the sixth crossover 84W2-W3 are arranged on the other axial side Z1 of the core 50.

[0583] Furthermore, in the winding process of the ninth embodiment, of the multiple coil sections 78, the U-phase coil sections U1 to U4 and the W-phase coil sections W1 to W4 are wound by moving the nozzle 120 to one circumferential side R1 of the core 50, and the V-phase coil sections V1 to V4 are wound by moving the nozzle 120 to the other circumferential side R2 of the core 50.

[0584] After the winding process, for example, each of the split cores 56 is cut off from the temporary joint molding runner 106 and connected in an annular shape with the teeth portions 54 facing radially inward.

[0585] (winding shaping process, wire connection process and assembly process) In the ninth embodiment, the winding shaping process, the wire connection process, and the assembly process are similar to those in the first embodiment. In the ninth embodiment of the method for manufacturing the rotating electric machine 10, the rotating electric machine 10 (see FIG. 1) is manufactured in the above-described manner.

[0586] (Action and Effects) In the ninth embodiment described above, the same functions and effects as those of the first embodiment can be obtained with respect to the same configuration and method as those of the first embodiment.

[0587] 33, in the winding process of the ninth embodiment, the nozzle 120 moves to one circumferential side R1 of the core 50 to wind the teeth portions 54 of two phases out of the U, V, and W phases, and moves to the other circumferential side R2 of the core 50 to wind the teeth portions 54 of one phase out of the U, V, and W phases, thereby forming a plurality of coil portions 78. As a result, it becomes possible to wind the winding 70 around the plurality of teeth portions 54 with a continuous wire, thereby improving productivity.

[0588] In particular, the rotating electric machine 10 is an inner rotor type brushless motor in which multiple teeth 54 extend radially inward from the core 50, and according to the ninth embodiment, it is possible to realize a small, high-output, and low-cost inner rotor type brushless motor.

[0589] Further, the multiple power input wires 82 are arranged on one axial side Z2 of the core 50, and among the multiple crossover wires 84, the first crossover wire 84U1-U2, the second crossover wire 84V2-V1, the third crossover wire 84W1-W2, the seventh crossover wire 84U3-U4, the eighth crossover wire 84V4-V3, and the ninth crossover wire 84W3-W4 are arranged on the other axial side Z1 of the core 50, and the fourth crossover wire 84U2-U3, the fifth crossover wire 84V3-V2, and the sixth crossover wire 84W2-W3 are arranged on the one axial side Z2 of the core 50 without intersecting with the multiple power input wires 82. Therefore, since the multiple power input wires 82 and the multiple crossover wires 84 do not intersect with each other, it is possible to prevent the power input wires 82 and the crossover wires 84 from becoming entangled with each other in the winding shaping process.

[0590] Furthermore, since the multiple power input lines 82 and the multiple crossover lines 84 do not intersect with each other, they can be accommodated orderly on the one axial side Z2 and the other axial side Z1 in the assembly process.

[0591] Furthermore, each of the multiple power input lines 82 is wired across two teeth portions 54. Therefore, the distance between both ends of the power input lines 82 and the distance between both ends of the jumper lines 84 are sufficiently secured, which also makes it possible to prevent the jumper lines 84 between the coil portions 78 and the power input lines 82 from becoming entangled in a complicated manner.

[0592] (Modification) Next, a modification of the ninth embodiment will be described.

[0593] The stator 20 according to the ninth embodiment has k=4 and n=1 as an example of a k-series, n-parallel delta connection where k is an even number and n is a natural number, but the manufacturing method of the stator 20 according to the eighth embodiment can be applied to all three-phase brushless motors in which the number of slots, teeth portions 54, and coil portions 78 is a multiple of 6 and is 6 or more. For example, the numbers of slots, teeth portions 54, and coil portions 78 can be 6 (k=2 and n=1), 12 (k=4 and n=1), 18 (k=6 and n=1), 24 (k=8 and n=1), 30 (k=10 and n=1), 36 (k=12 and n=1), etc.

[0594] In the ninth embodiment, the same modified examples as those in the eighth embodiment can be adopted for the same configurations and methods as those in the eighth embodiment.

[0595] In the winding process according to the ninth embodiment, the V-phase coil portions V1 to V4 of the U-phase, V-phase, and W-phase coils are wound by moving the nozzle 120 to the other circumferential side R2 of the core 50, but the winding process according to the present embodiment is not limited to this. For example, the U-phase coil portions U1 to U4 or the W-phase coil portions W1 to W4 may be wound by moving the nozzle 120 to the other circumferential side R2 of the core 50. Even in this case, it is possible to wind the winding 70 around the multiple teeth portions 54 using a continuous wire, thereby improving productivity.

[0596] [Tenth embodiment of the manufacturing method for a rotating electric machine] Next, a tenth embodiment of the method for manufacturing the rotating electric machine 10 according to an embodiment of the present invention will be described.

[0597] In the tenth embodiment of the method for manufacturing the rotating electric machine 10, the core setting step is similar to that in the third embodiment of the method for manufacturing the rotating electric machine 10. Meanwhile, in the tenth embodiment of the method for manufacturing the rotating electric machine 10, the winding winding step is changed as follows compared to the third embodiment of the method for manufacturing the rotating electric machine 10.

[0598] (Winding connection configuration) In a tenth embodiment of the manufacturing method for the rotating electric machine 10, as an example of a k-series delta connection where k is an even number and n is a natural number, the coil portions 78 are delta connected in a 2-series 2-parallel manner. That is, in an eighth embodiment of the manufacturing method for the rotating electric machine 10, k=2 and n=2, and the number of slots, teeth portions 54, and coil portions 78 is 12.

[0599] To specifically explain the wiring configuration of the multiple coil sections 78 that are delta-connected in a 2-series, 2-parallel system, the four coil sections 78 of the same phase are connected in series in pairs (k=2) to form two rows (n=2) of coil arrays 78A. Furthermore, three sets of coil groups 80 each consisting of the four coil sections 78 of the same phase are connected in a delta shape (triangle).

[0600] (Winding process) In the winding process in the tenth embodiment, as an example, one nozzle 120 (see FIG. 4) is used, and the winding 70, which is one continuous wire, is wound in sequence around the teeth portions 54 by a single nozzle method. Fig. 34 is a diagram of the winding process in the tenth embodiment, and Table 10 is a process chart showing the winding order in the winding process in the tenth embodiment.

[0601] In the winding process in the tenth embodiment, the winding 70 is wound in the following order of steps 1 to 12. In the drawing, the circled numbers 1 to 12 indicate the order in which the multiple coil portions 78 are formed.

[0602] (First Step) In a first step, the winding 70 is wound around the first teeth portion 54U1 from one axial side Z2 of the core 50. Also, the winding is wound counterclockwise as viewed in the axial direction for an integer+0.5 turns to form the first coil portion 78U1.

[0603] Thereafter, the winding 70 is routed from the other axial side Z1 to one circumferential side R1 across the fourth coil portion 54U2 to form a first crossover wire 84U1-U2.

[0604] (Second step) In the second step, the winding 70 is wound counterclockwise from the other axial side Z1 of the core 50 to the fourth tooth portion 54U2 by an integer+0.5 number of turns when viewed from the axial direction to form the fourth coil portion 78U2, and then is led out to one axial side Z2 of the core 50.

[0605] Thereafter, the winding 70 is returned from one axial side Z2 of the core 50 to between the fourth teeth portion 54U2 and the fifth teeth portion 54V2 and wired across the fifth coil portion 54V2, and the second power input line 82U2-V2 is formed by a continuous wire.

[0606] (Third Step) In a third step, the winding 70 is wound around the fifth teeth portion 54V2 from one axial side Z2 of the core 50. Also, the fifth coil portion 78V2 is formed by winding the winding a number of turns that is an integer + 0.5 in a counterclockwise direction as viewed in the axial direction.

[0607] Thereafter, the winding 70 is routed from the other axial side Z1 to the other circumferential side R2 across the second coil portion 54V1 to form a second jumper 84V2-V1.

[0608] (Fourth step) In the fourth step, the winding 70 is wound counterclockwise from the other axial side Z1 of the core 50 to the second teeth portion 54V1 for an integer + 0.5 number of turns when viewed from the axial direction to form the second coil portion 78V1, and then led out to one axial side Z2 of the core 50.

[0609] Thereafter, the winding 70 is returned from one axial side Z2 of the core 50 to between the second teeth portion 54V1 and the third teeth portion 54W1 and wired across the third coil portion 54W1, and the first power input line 82V1-W1 is formed by a continuous wire.

[0610] (5th step) In a fifth step, the winding 70 is wound around the third teeth portion 54W1 from one axial side Z2 of the core 50. Also, the winding is wound counterclockwise as viewed in the axial direction for an integer+0.5 number of turns to form the third coil portion 78W1.

[0611] Thereafter, the winding 70 is routed from the other axial side Z1 to the one circumferential side R1 across the sixth coil portion 54W2 to form a third jumper 84W1-W2.

[0612] (Sixth step) In the sixth step, the winding 70 is wound counterclockwise from the other axial side Z1 of the core 50 to the sixth tooth portion 54W2 for an integer + 0.5 turns when viewed from the axial direction to form the sixth coil portion 78W2, and then led out to one axial side Z2 of the core 50.

[0613] Thereafter, the winding 70 is returned from one axial side Z2 of the core 50 to between the sixth teeth portion 54W2 and the seventh teeth portion 54U3 and wired across the seventh coil portion 54U3, and the third power input line 82W2-U3 is formed by a continuous wire.

[0614] (Seventh step) In a seventh step, the winding 70 is wound around the seventh tooth portion 54U3 from one axial side Z2 of the core 50. Also, the winding is wound counterclockwise when viewed in the axial direction for an integer+0.5 turns to form a seventh coil portion 78U3.

[0615] Thereafter, the winding 70 is routed from the other axial side Z1 to the one circumferential side R1 across the tenth coil portion 54U4 to form a fourth crossover wire 84U3-U4.

[0616] (Step 8) In the eighth step, the winding 70 is wound counterclockwise from the other axial side Z1 of the core 50 to the tenth tooth portion 54U4 for an integer + 0.5 number of turns when viewed from the axial direction to form the tenth coil portion 78U4, and then led out to one axial side Z2 of the core 50.

[0617] Thereafter, the winding 70 is returned from one axial side Z2 of the core 50 to between the tenth teeth portion 54U4 and the eleventh teeth portion 54V4 and wired across the eleventh coil portion 54V4, and the fifth power input line 82U4-V4 is formed by a continuous wire.

[0618] (9th step) In a ninth step, the winding 70 is wound around the eleventh tooth portion 54V4 from one axial side Z2 of the core 50. Also, the winding is wound counterclockwise as viewed in the axial direction for an integer+0.5 number of turns to form an eleventh coil portion 78V4.

[0619] Thereafter, the winding 70 is routed from the other axial side Z1 to the other circumferential side R2 across the eighth coil portion 54V3, forming a fifth jumper 84V4-V3.

[0620] (Step 10) In the sixth step, the winding 70 is wound counterclockwise from the other axial side Z1 of the core 50 to the eighth tooth portion 54V3 when viewed from the axial direction by an integer+0.5 number of turns to form the eighth coil portion 78V3, and then led out to one axial side Z2 of the core 50.

[0621] The winding 70 is then returned from one axial side Z2 of the core 50 to between the eighth teeth portion 54V3 and the ninth teeth portion 54W3 and wired across the ninth coil portion 54W3, and the fourth power input line 82V3-W3 is formed by a continuous wire.

[0622] (Step 11) In an eleventh step, the winding 70 is wound around the ninth tooth portion 54W3 from one axial side Z2 of the core 50. Also, the ninth coil portion 78W3 is formed by winding the winding a number of turns that is an integer+0.5 in a counterclockwise direction as viewed in the axial direction.

[0623] Thereafter, the winding 70 is routed from the other axial side Z1 to the one circumferential side R1 across the twelfth coil portion 54W4 to form a sixth jumper 84W3-W4.

[0624] (Step 12) In the 12th step, the winding 70 is wound counterclockwise from the other axial side Z1 of the core 50 to the 12th tooth portion 54W4 for an integer + 0.5 number of turns when viewed from the axial direction to form the 12th coil portion 78W4, and then led out to the one axial side Z2 of the core 50.

[0625] Thereafter, the winding 70 is routed over the winding-start end 82A of the winding 70 on one axial side Z2 of the core 50, and a sixth power input line 82W4-U1 is formed by a wiring process.

[0626] [Table 10]

[0627] In the tenth embodiment, a two-series, two-parallel delta connection is formed in the above manner.

[0628] Each of the multiple power input lines 82 is led out from between adjacent teeth portions 54. Each of the multiple first direction crossover wires is wired across 2 × 2 teeth portions 54, and each of the multiple second direction crossover wires is wired across two teeth portions 54.

[0629] In addition, the first power input line 82V1-W1, the second power input line 82U2-V2, the third power input line 82W2-U3, the fourth power input line 82V3-W3, the fifth power input line 82U4-V4, and the sixth power input line 82W4-U1 are arranged on one axial side Z2 of the core 50, and the first crossover line 84U1-U2, the second crossover line 84V2-V1, the third crossover line 84W1-W2, the fourth crossover line 84U3-U4, the fifth crossover line 84V4-V3, and the sixth crossover line 84W3-W4 are arranged on the other axial side Z1 of the core 50.

[0630] Furthermore, in the winding process in the tenth embodiment, of the multiple coil sections 78, the U-phase coil sections U1 to U4 and the W-phase coil sections W1 to W4 are wound by moving the nozzle 120 to one circumferential side R1 of the core 50, and the V-phase coil sections V1 to V4 are wound by moving the nozzle 120 to the other circumferential side R2 of the core 50.

[0631] After the winding process, for example, each of the split cores 56 is cut off from the temporary joint molding runner 106 and connected in an annular shape with the teeth portions 54 facing radially inward.

[0632] (winding shaping process, wire connection process and assembly process) In the tenth embodiment, the winding shaping process, the wire connection process, and the assembly process are the same as those in the third embodiment. In the tenth embodiment of the method for manufacturing the rotating electric machine 10, the rotating electric machine 10 (see FIG. 1) is manufactured in the above-described manner.

[0633] (Action and Effects) In the tenth embodiment described above, the same functions and effects as those of the third embodiment can be obtained with respect to the same configuration and method as those of the third embodiment.

[0634] 34, in the winding process in the tenth embodiment, the nozzle 120 moves to one circumferential side R1 of the core 50 to wind the teeth portions 54 of two phases out of the U, V, and W phases, and moves to the other circumferential side R2 of the core 50 to wind the teeth portions 54 of one phase out of the U, V, and W phases, thereby forming a plurality of coil portions 78. As a result, it becomes possible to wind the winding 70 around the plurality of teeth portions 54 with a continuous wire, thereby improving productivity.

[0635] In particular, the rotating motor 10 is an inner rotor type brushless motor in which multiple teeth 54 extend radially inward from the core 50, and according to the tenth embodiment, it is possible to realize a small, high-output, and low-cost inner rotor type brushless motor.

[0636] Moreover, the multiple power input wires 82 are arranged on one axial side Z2 of the core 50, and the multiple jumper wires 84 are arranged on the other axial side Z1 of the core 50. Therefore, the multiple power input wires 82 and the multiple jumper wires 84 do not cross each other, and therefore it is possible to prevent the power input wires 82 and the jumper wires 84 from becoming entangled in the winding shaping process.

[0637] Furthermore, since the multiple power input lines 82 and the multiple crossover lines 84 do not intersect with each other, they can be accommodated orderly on the one axial side Z2 and the other axial side Z1 in the assembly process.

[0638] Moreover, each of the multiple power input lines 82 is led out from between adjacent teeth portions 54. Therefore, while a sufficient gap is ensured between both ends of the jumper wire 84, the gap between both ends of the power input line 82 is narrowed, which makes it possible to prevent the jumper wires 84 between the coil portions 78 and the power input lines 82 from becoming entangled in a complicated manner.

[0639] Moreover, each of the multiple jumper wires 84 is wired across two or 2 × 2 tooth portions 54. Therefore, the distance between both ends of the power input wire 82 and the distance between both ends of the jumper wire 84 are sufficiently secured, which also makes it possible to prevent the jumper wires 84 between the coil portions 78 and the power input wires 82 from becoming entangled in a complicated manner.

[0640] (Modification) Next, a modification of the tenth embodiment will be described.

[0641] The stator 20 according to the tenth embodiment has k=2 and n=2 as an example of a k-series, n-parallel delta connection where k is an even number, but the manufacturing method of the stator 20 according to the tenth embodiment is applicable to all three-phase brushless motors in which the number of slots, teeth portions 54, and coil portions 78 is a multiple of 6 and is 12 or more. For example, the number of slots, teeth portions 54, and coil portions 78 can be 12 (k=2 and n=2), 18 (k=3 and n=2, or k=2 and n=3), 24 (k=4 and n=2, or k=2 and n=4), 30 (k=5 and n=2, or k=2 and n=5), 36 (k=6 and n=2, k=3 and n=4, k=4 and n=3, or k=2 and n=6), etc.

[0642] In the tenth embodiment, the same modified examples as those in the third embodiment can be adopted for the same configurations and methods as those in the third embodiment.

[0643] In the winding process according to the tenth embodiment, the V-phase coil parts V1 to V4 of the U-phase, V-phase, and W-phase coils are wound by moving the nozzle 120 to the other circumferential side R2 of the core 50, but the winding process according to the present embodiment is not limited to this. For example, the U-phase coil parts U1 to U4 or the W-phase coil parts W1 to W4 may be wound by moving the nozzle 120 to the other circumferential side R2 of the core 50. Even in this case, it is possible to wind the winding 70 around the multiple teeth parts 54 using a continuous wire, thereby improving productivity.

[0644] [Eleventh embodiment of manufacturing method of rotating electric machine] Next, an eleventh embodiment of the method for manufacturing the rotating electric machine 10 according to an embodiment of the present invention will be described.

[0645] The eleventh embodiment of the method for manufacturing the rotating electric machine 10 is different from the tenth embodiment of the method for manufacturing the rotating electric machine 10 described above in that the winding winding step is changed as follows.

[0646] (Winding process) In the eleventh embodiment, as an example, a first nozzle 122 and a second nozzle 124 are used, and a first winding 72 and a second winding 74, which are two continuous wires, are wound in sequence around the multiple teeth portions 54 by a double nozzle method. Fig. 35 is a diagram showing a winding process in the eleventh embodiment, and Table 11 is a process table showing the winding order of the winding process in the eleventh embodiment.

[0647] In the winding process in the eleventh embodiment, the first winding 72 and the second winding 74 are wound in the following order of steps 1 to 6. In the drawing, circled numbers 1 to 6 indicate the order in which the multiple coil portions 78 are formed.

[0648] (1st Step-1) In a first step, the first winding 72 is wound around the first teeth portion 54U1 from one axial side Z2 of the core 50 by the first nozzle 122 (see FIG. 24). The first coil portion 78U1 is formed by winding the first winding 72 counterclockwise as viewed in the axial direction for an integer+0.5 number of turns.

[0649] Thereafter, the first winding 72 is wired from the other axial side Z1 to one circumferential side R1 across the fourth coil portion 54U2 to form a first crossover wire 84U1-U2.

[0650] (1st Step-2) Similarly, in the first step, the second winding 74 is wound around the seventh teeth portion 54U3 from one axial side Z2 of the core 50 by the second nozzle 124 (see FIG. 24). Also, the second winding 74 is wound counterclockwise as viewed in the axial direction for an integer+0.5 number of turns to form the seventh coil portion 78U3.

[0651] Thereafter, the second winding 74 is wired from the other axial side Z1 to the one circumferential side R1 across the tenth coil portion 54U4 to form a fourth crossover 84U3-U4.

[0652] (2nd Step-1) In the second step, the first winding 72 is wound counterclockwise from the other axial side Z1 of the core 50 to the fourth teeth portion 54U2 by the first nozzle 122 (see Figure 24) for an integer + 0.5 number of turns as viewed from the axial direction to form the fourth coil portion 78U2, and then led out to one axial side Z2 of the core 50.

[0653] Thereafter, the first winding 72 is returned from one axial side Z2 of the core 50 to between the fourth teeth portion 54U2 and the fifth teeth portion 54V2 and wired across the fifth coil portion 54V2, and the second power input line 82U2-V2 is formed by a continuous wire.

[0654] (2nd Step-2) Similarly, in the second step, the second winding 74 is wound counterclockwise from the other axial side Z1 of the core 50 to the tenth tooth portion 54U4 by the second nozzle 124 (see FIG. 24) for an integer+0.5 number of turns as viewed axially to form the tenth coil portion 78U4, and then led out to the one axial side Z2 of the core 50.

[0655] Thereafter, the second winding 74 is returned from one axial side Z2 of the core 50 to between the tenth teeth portion 54U4 and the eleventh teeth portion 54V4 and wired across the eleventh coil portion 54V4, and the fifth power input line 82U4-V4 is formed by a continuous wire.

[0656] (Third Step-1) In a third step, the first winding 72 is wound around the fifth teeth portion 54V2 from one axial side Z2 of the core 50 by the first nozzle 122 (see FIG. 24). The fifth coil portion 78V2 is formed by winding the first winding 72 counterclockwise as viewed in the axial direction for an integer+0.5 number of turns.

[0657] Thereafter, the first winding 72 is routed from the other axial side Z1 to the other circumferential side R2 across the second coil portion 54V1 to form a second jumper 84V2-V1.

[0658] (Third Step-2) Similarly, in a third step, the second winding 74 is wound around the eleventh tooth portion 54V4 from one axial side Z2 of the core 50 by the second nozzle 124 (see FIG. 24). Also, the second winding 74 is wound counterclockwise as viewed from the axial direction by an integer+0.5 number of turns to form the eleventh coil portion 78V4.

[0659] Thereafter, the second winding 74 is routed from the other axial side Z1 to the other circumferential side R2 across the eighth coil portion 54V3 to form a fifth jumper 84V4-V3.

[0660] (4th Step-1) In the fourth step, the first winding 72 is wound counterclockwise from the other axial side Z1 of the core 50 to the second teeth portion 54V1 by the first nozzle 122 (see Figure 24) for an integer + 0.5 number of turns as viewed from the axial direction to form the second coil portion 78V1, and then led out to one axial side Z2 of the core 50.

[0661] Thereafter, the first winding 72 is returned from one axial side Z2 of the core 50 to between the second teeth portion 54V1 and the third teeth portion 54W1 and wired across the third coil portion 54W1, and the first power input line 82V1-W1 is formed by a continuous wire.

[0662] (4th Step-2) Similarly, in the fourth step, the second winding 74 is wound counterclockwise from the other axial side Z1 of the core 50 to the eighth tooth portion 54V3 by the second nozzle 124 (see Figure 24) for an integer + 0.5 number of turns as viewed from the axial direction to form the eighth coil portion 78V3, and then led out to the one axial side Z2 of the core 50.

[0663] Thereafter, the second winding 74 is returned from one axial side Z2 of the core 50 to between the eighth teeth portion 54V3 and the ninth teeth portion 54W3 and wired across to the ninth coil portion 54W3, and the fourth power input line 82V3-W3 is formed by a continuous wire.

[0664] (5th Step-1) In a fifth step, the first winding 72 is wound around the third teeth portion 54W1 from one axial side Z2 of the core 50 by the first nozzle 122 (see FIG. 24). The first winding 72 is also wound counterclockwise as viewed in the axial direction for an integer+0.5 number of turns to form the third coil portion 78W1.

[0665] Thereafter, the first winding 72 is routed from the other axial side Z1 to the one circumferential side R1 across the sixth coil portion 54W2 to form a third jumper 84W1-W2.

[0666] (5th Step-2) Similarly, in the fifth step, the second winding 74 is wound around the ninth tooth portion 54W3 from one axial side Z2 of the core 50 by the second nozzle 124 (see FIG. 24). The ninth coil portion 78W3 is formed by winding the second winding 74 counterclockwise as viewed in the axial direction for an integer+0.5 number of turns.

[0667] Thereafter, the second winding 74 is routed from the other axial side Z1 to the one circumferential side R1 across the twelfth coil portion 54W4 to form a sixth jumper 84W3-W4.

[0668] (6th Step-1) In the sixth step, the first winding 72 is wound counterclockwise from the other axial side Z1 of the core 50 to the sixth teeth portion 54W2 by the first nozzle 122 (see Figure 24) for an integer + 0.5 number of turns as viewed from the axial direction to form the sixth coil portion 78W2, and then led out to the one axial side Z2 of the core 50.

[0669] Thereafter, the first winding 72 is led out to one axial side Z2 of the core 50, and the winding ending end 82D of the first winding 72 and the winding starting end 82E of the second winding 74 are connected to each other on one axial side Z2 of the core 50, thereby forming a third power input line 82W2-U3 by a wiring process.

[0670] (6th Step-2) Similarly, in the sixth step, the winding 70 is wound counterclockwise from the other axial side Z1 of the core 50 to the 12th tooth portion 54W4 by the second nozzle 124 (see FIG. 24) for an integer+0.5 number of turns as viewed axially to form the 12th coil portion 78W4, and then led out to the one axial side Z2 of the core 50.

[0671] Thereafter, the first winding 72 is led out to one axial side Z2 of the core 50, and the winding ending end 82F of the second winding 74 and the winding starting end 82C of the first winding 72 are connected to each other on one axial side Z2 of the core 50, thereby forming the sixth power input line 82W4-U1 through a wiring process.

[0672] Then, by forming the first connecting portion 92 and the second connecting portion 94, the first winding 72 and the second winding 74 form a single continuous winding 70.

[0673] [Table 11]

[0674] In the eleventh embodiment, a two-series, two-parallel delta connection is formed in the above manner. According to the winding process in the eleventh embodiment, a connection configuration of a plurality of coil portions 78 is obtained similarly to the tenth embodiment, except that a first connection portion 92 and a second connection portion 94 are formed instead of one connection portion 90 (see FIG. 17).

[0675] Each of the multiple power input lines 82 is led out from between adjacent teeth portions 54. Each of the multiple first direction crossover wires is wired across 2 × 2 teeth portions 54, and each of the multiple second direction crossover wires is wired across two teeth portions 54.

[0676] The first winding 72 and the second winding 74 are each formed of a single continuous wire, and one of the multiple power input lines 82 has a connection portion connecting a winding end 82F of the second winding 74 and a winding start end 82C of the first winding 72, and one of the power input lines 82 has a connection portion connecting a winding end 82D of the first winding 72 and a winding start end 82E of the second winding 74. The multiple power input lines 82 are connected to connection terminals 98 one by one.

[0677] In addition, the first power input line 82V1-W1, the second power input line 82U2-V2, the third power input line 82W2-U3, the fourth power input line 82V3-W3, the fifth power input line 82U4-V4, and the sixth power input line 82W4-U1 are arranged on one axial side Z2 of the core 50, and the first crossover line 84U1-U2, the second crossover line 84V2-V1, the third crossover line 84W1-W2, the fourth crossover line 84U3-U4, the fifth crossover line 84V4-V3, and the sixth crossover line 84W3-W4 are arranged on the other axial side Z1 of the core 50.

[0678] The first power input line 82V1-W1, the second power input line 82U2-V2, the third power input line 82W2-U3, the fourth power input line 82V3-W3, the fifth power input line 82U4-V4, and the sixth power input line 82W4-U1 are led out from between adjacent teeth portions 54. In addition, the first power input line 82V1-W1, the second power input line 82U2-V2, the third power input line 82W2-U3, the fourth power input line 82V3-W3, the fifth power input line 82U4-V4, and the sixth power input line 82W4-U1 are disposed on one axial side Z2 of the core 50. The third power input line 82W2-U3 has a first connection portion 92 connecting the ending end 82D of the first winding 72 and the starting end 82E of the second winding 74, and the sixth power input line 82W4-U1 has a second connection portion 94 connecting the ending end 82F of the second winding 74 and the starting end 82C of the first winding 72.

[0679] Furthermore, in the winding process of the eleventh embodiment, of the multiple coil sections 78, the U-phase coil sections U1 to U4 and the W-phase coil sections W1 to W4 are wound by moving the first nozzle 122 and the second nozzle 124 to one circumferential side R1 of the core 50, and the V-phase coil sections V1 to V4 are wound by moving the first nozzle 122 and the second nozzle 124 to the other circumferential side R2 of the core 50.

[0680] After the winding process, for example, each of the split cores 56 is cut off from the temporary joint molding runner 106 and connected in an annular shape with the teeth portions 54 facing radially inward.

[0681] (winding shaping process, wire connection process and assembly process) In the eleventh embodiment, the winding shaping process, the wire connection process, and the assembly process are the same as those in the tenth embodiment. In the eleventh embodiment of the method for manufacturing the rotating electric machine 10, the rotating electric machine 10 (see FIG. 1) is manufactured in the above-described manner. The configuration of the rotating electric machine 10 manufactured in the above-described manner is the same as that of the tenth embodiment, except that a first connection portion 92 and a second connection portion 94 are formed instead of one connection portion 90 (see FIG. 17).

[0682] (Action and Effects) In the eleventh embodiment described above, the same functions and effects as those of the tenth embodiment can be obtained with respect to the same configuration and method as those of the tenth embodiment.

[0683] 35, in the winding process in the eleventh embodiment, the first nozzle 122 and the second nozzle 124 move to one circumferential side R1 of the core 50 to wind the teeth portions 54 of two phases out of the U, V, and W phases, and the first nozzle 122 and the second nozzle 124 move to the other circumferential side R2 of the core 50 to wind the teeth portions 54 of one phase out of the U, V, and W phases, thereby forming a plurality of coil portions 78. As a result, it becomes possible to wind the first winding 72 and the second winding 74 with a continuous wire around the plurality of teeth portions 54, thereby improving productivity.

[0684] In particular, the rotating motor 10 is an inner rotor type brushless motor in which multiple teeth 54 extend radially inward from the core 50, and according to the 11th embodiment, it is possible to realize a small, high-output, and low-cost inner rotor type brushless motor.

[0685] Moreover, the multiple power input wires 82 are arranged on one axial side Z2 of the core 50, and the multiple jumper wires 84 are arranged on the other axial side Z1 of the core 50. Therefore, the multiple power input wires 82 and the multiple jumper wires 84 do not cross each other, and therefore it is possible to prevent the power input wires 82 and the jumper wires 84 from becoming entangled in the winding shaping process.

[0686] Furthermore, since the multiple power input lines 82 and the multiple crossover lines 84 do not intersect with each other, they can be accommodated orderly on the one axial side Z2 and the other axial side Z1 in the assembly process.

[0687] Moreover, each of the multiple power input lines 82 is led out from between adjacent teeth portions 54. Therefore, while a sufficient gap is ensured between both ends of the jumper wire 84, the gap between both ends of the power input line 82 is narrowed, which makes it possible to prevent the jumper wires 84 between the coil portions 78 and the power input lines 82 from becoming entangled in a complicated manner.

[0688] Moreover, each of the multiple jumper wires 84 is wired across two or 2 × 2 tooth portions 54. Therefore, the distance between both ends of the power input wire 82 and the distance between both ends of the jumper wire 84 are sufficiently secured, which also makes it possible to prevent the jumper wires 84 between the coil portions 78 and the power input wires 82 from becoming entangled in a complicated manner.

[0689] In the eleventh embodiment, a first nozzle 122 and a second nozzle 124 are used to sequentially wind a first winding 72 and a second winding 74, which are two continuous wires, around the teeth 54 using a double nozzle system. Therefore, compared to the tenth embodiment described above, in which a single nozzle 120 (see FIG. 4) is used to sequentially wind a single continuous wire, the winding 70, around the teeth 54 using a single nozzle system, the number of steps in the winding process can be halved. This allows the process time to be shortened, and therefore the manufacturing costs to be reduced.

[0690] (Modification) Next, a modification of the eleventh embodiment will be described.

[0691] The stator 20 according to the eleventh embodiment has k=2 and n=2 as an example of a k-series, n-parallel delta connection where k is an even number, but the manufacturing method of the stator 20 according to the eleventh embodiment is applicable to all three-phase brushless motors in which n is a multiple of 2 and the number of slots, teeth portions 54, and coil portions 78 is a multiple of 12 and is equal to or greater than 12. For example, the numbers of slots, teeth portions 54, and coil portions 78 can be 12 (k=2 and n=2), 24 (k=4 and n=2, or k=2 and n=4), 36 (k=6 and n=2, k=3 and n=4, or k=2 and n=6), 48 (k=8 and n=2, k=4 and n=4, or k=2 and n=8), etc.

[0692] In the eleventh embodiment, the same modified examples as those in the tenth embodiment can be adopted for the same configurations and methods as those in the tenth embodiment.

[0693] 21, the temporary coupling molding runner 106 in the eleventh embodiment may be changed to a temporary coupling molding runner 108 extending from the opposite faces of the teeth portions 54 of the multiple split cores 56 and connected to each other in a generally annular shape. The winding shaping process, the wire connection process and the assembly process in this case are the same as those in the modification of the sixth embodiment.

[0694] 22, in the eleventh embodiment, similarly to the modified example of the sixth embodiment, the temporary joint molding runner 106 may be changed to a jig 104 having a generally elliptical shape in a plan view, and the first nozzle 122 and the second nozzle 124 may be changed to a first flyer 112 and a second flyer 114 to form a double flyer system. In this case, the winding shaping process, the wire connection process, and the assembly process are the same as those in the modified example of the sixth embodiment.

[0695] In the winding step according to the eleventh embodiment, the coil portion V1 to V4 of the U-phase, V-phase, and W-phase coils is wound by moving the first nozzle 122 and the second nozzle 124 to the other circumferential side R2 of the core 50. However, the winding step according to the present embodiment is not limited to this. For example, the coil portions U1 to U4 of the U-phase or the coil portions W1 to W4 of the W-phase may be wound by moving the first nozzle 122 and the second nozzle 124 to the other circumferential side R2 of the core 50. Even in this case, the first winding 72 and the second winding 74 can be wound around the multiple teeth portions 54 with a continuous wire, which can improve productivity.

[0696] [Twelfth embodiment of the manufacturing method for a rotating electric machine] Next, a twelfth embodiment of the method for manufacturing the rotating electric machine 10 according to an embodiment of the present invention will be described.

[0697] In the twelfth embodiment of the method for manufacturing the rotating electric machine 10, the core setting step is similar to that in the third embodiment of the method for manufacturing the rotating electric machine 10. Meanwhile, in the twelfth embodiment of the method for manufacturing the rotating electric machine 10, the winding winding step is changed as follows, compared to the third embodiment of the method for manufacturing the rotating electric machine 10.

[0698] (Winding process) In the winding process in the twelfth embodiment, as an example, one nozzle 120 (see FIG. 4) is used, and the winding 70, which is one continuous wire, is wound in sequence around the teeth portions 54 by a single nozzle method. Fig. 36 is a diagram of the winding process in the twelfth embodiment, and Table 12 is a process chart showing the winding order in the winding process in the twelfth embodiment.

[0699] In the winding process in the twelfth embodiment, the winding 70 is wound in the following order of steps 1 to 12. In the drawing, circled numbers 1 to 12 indicate the order in which the multiple coil portions 78 are formed.

[0700] (First Step) In a first step, the winding 70 is wound around the first teeth portion 54U1 from one axial side Z2 of the core 50. Also, the winding is wound clockwise as viewed in the axial direction for an integer+0.5 turns to form the first coil portion 78U1.

[0701] Thereafter, the winding 70 is routed from the other axial side Z1 to one circumferential side R1 across the fourth coil portion 54U2 to form a first crossover wire 84U1-U2.

[0702] (Second step) In the second step, the winding 70 is wound clockwise from the other axial side Z1 of the core 50 to the fourth teeth portion 54U2 for an integer+0.5 number of turns when viewed from the axial direction to form the fourth coil portion 78U2, and then is led out to one axial side Z2 of the core 50.

[0703] Thereafter, the winding 70 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the second power input line 82U2-V2 is formed by a continuous wire across the fifth coil portion 54V2.

[0704] (Third Step) In a third step, the winding 70 is wound around the fifth teeth portion 54V2 from one axial side Z2 of the core 50. Also, the fifth coil portion 78V2 is formed by winding the winding a number of turns that is an integer + 0.5 in a clockwise direction as viewed in the axial direction.

[0705] Thereafter, the winding 70 is routed from the other axial side Z1 to the other circumferential side R2 across the second coil portion 54V1 to form a second jumper 84V2-V1.

[0706] (Fourth step) In the fourth step, the winding 70 is wound clockwise from the other axial side Z1 of the core 50 to the second teeth portion 54V1 for an integer + 0.5 number of turns when viewed from the axial direction to form the second coil portion 78V1, and then led out to one axial side Z2 of the core 50.

[0707] Thereafter, the winding 70 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the first power input line 82V1-W1 across the third coil portion 54W1 is formed by a continuous wire.

[0708] (5th step) In a fifth step, the winding 70 is wound around the third teeth portion 54W1 from one axial side Z2 of the core 50. Also, the winding is wound clockwise as viewed in the axial direction for an integer+0.5 turns to form the third coil portion 78W1.

[0709] Thereafter, the winding 70 is routed from the other axial side Z1 to the one circumferential side R1 across the sixth coil portion 54W2 to form a third jumper 84W1-W2.

[0710] (Sixth step) In the sixth step, the winding 70 is wound clockwise from the other axial side Z1 of the core 50 to the sixth teeth portion 54W2 for an integer + 0.5 number of turns when viewed from the axial direction to form the sixth coil portion 78W2, and then led out to the one axial side Z2 of the core 50.

[0711] Thereafter, the winding 70 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the third power input line 82W2-U3 is formed by a continuous wire across the seventh coil portion 54U3.

[0712] (Seventh step) In a seventh step, the winding 70 is wound around the seventh tooth portion 54U3 from one axial side Z2 of the core 50. Also, the winding is wound clockwise as viewed in the axial direction for an integer+0.5 turns to form a seventh coil portion 78U3.

[0713] Thereafter, the winding 70 is routed from the other axial side Z1 to the one circumferential side R1 across the tenth coil portion 54U4 to form a fourth crossover wire 84U3-U4.

[0714] (Step 8) In the eighth step, the winding 70 is wound clockwise from the other axial side Z1 of the core 50 to the tenth tooth portion 54U4 for an integer + 0.5 number of turns when viewed from the axial direction to form the tenth coil portion 78U4, and then led out to one axial side Z2 of the core 50.

[0715] Thereafter, the winding 70 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the fifth power input line 82U4-V4 is formed by a continuous wire across the eleventh coil portion 54V4.

[0716] (9th step) In a ninth step, the winding 70 is wound around the eleventh tooth portion 54V4 from one axial side Z2 of the core 50. Also, the winding is wound clockwise as viewed in the axial direction by an integer+0.5 number of turns to form an eleventh coil portion 78V4.

[0717] Thereafter, the winding 70 is routed from the other axial side Z1 to the other circumferential side R2 across the eighth coil portion 54V3, forming a fifth jumper 84V4-V3.

[0718] (Step 10) In the tenth step, the winding 70 is wound clockwise from the other axial side Z1 of the core 50 to the eighth tooth portion 54V3 for an integer + 0.5 number of turns as viewed from the axial direction to form the eighth coil portion 78V3, and then led out to one axial side Z2 of the core 50.

[0719] Thereafter, the winding 70 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the fourth power input line 82V3-W3 is formed by a continuous wire across the ninth coil portion 54W3.

[0720] (Step 11) In an eleventh step, the winding 70 is wound around the ninth tooth portion 54W3 from one axial side Z2 of the core 50. Also, the ninth coil portion 78W3 is formed by winding the winding a number of turns that is an integer + 0.5 in the clockwise direction as viewed in the axial direction.

[0721] Thereafter, the winding 70 is routed from the other axial side Z1 to the one circumferential side R1 across the twelfth coil portion 54W4 to form a sixth jumper 84W3-W4.

[0722] (Step 12) In the 12th step, the winding 70 is wound clockwise from the other axial side Z1 of the core 50 to the 12th tooth portion 54W4 for an integer + 0.5 turns when viewed from the axial direction to form the 12th coil portion 78W4, and then led out to the one axial side Z2 of the core 50.

[0723] Thereafter, the winding 70 is wired from one axial side Z2 of the core 50 to one circumferential side R1 to the winding starting end 82A of the winding 70, and a connection portion 90 is formed by a wiring process described below, thereby forming the sixth power input line 82W4-U1.

[0724] [Table 12]

[0725] In the twelfth embodiment, a two-series, two-parallel delta connection is formed in the above manner.

[0726] Each of the multiple power input lines 82 is wired across two teeth portions 54. Each of the multiple first direction crossover wires is wired across two teeth portions 54, and each of the multiple second direction crossover wires is wired across 2 × 2 teeth portions 54.

[0727] In addition, the first power input line 82V1-W1, the second power input line 82U2-V2, the third power input line 82W2-U3, the fourth power input line 82V3-W3, the fifth power input line 82U4-V4, and the sixth power input line 82W4-U1 are arranged on one axial side Z2 of the core 50, and the first crossover line 84U1-U2, the second crossover line 84V2-V1, the third crossover line 84W1-W2, the fourth crossover line 84U3-U4, the fifth crossover line 84V4-V3, and the sixth crossover line 84W3-W4 are arranged on the other axial side Z1 of the core 50.

[0728] Furthermore, in the winding process in the twelfth embodiment, of the multiple coil sections 78, the U-phase coil sections U1 to U4 and the W-phase coil sections W1 to W4 are wound by moving the nozzle 120 to one circumferential side R1 of the core 50, and the V-phase coil sections V1 to V4 are wound by moving the nozzle 120 to the other circumferential side R2 of the core 50.

[0729] After the winding process, for example, each of the split cores 56 is cut off from the temporary joint molding runner 106 and connected in an annular shape with the teeth portions 54 facing radially inward.

[0730] (winding shaping process, wire connection process and assembly process) In the twelfth embodiment, the winding shaping process, the wire connection process, and the assembly process are similar to those in the third embodiment. In the twelfth embodiment of the method for manufacturing the rotating electric machine 10, the rotating electric machine 10 (see FIG. 1) is manufactured in the above-described manner.

[0731] (Action and Effects) In the twelfth embodiment described above, the same functions and effects as those of the third embodiment can be obtained with respect to the same configuration and method as those of the third embodiment.

[0732] 36, in the winding process in the twelfth embodiment, the nozzle 120 moves to one circumferential side R1 of the core 50 to wind the teeth portions 54 of two phases out of the U, V, and W phases, and moves to the other circumferential side R2 of the core 50 to wind the teeth portions 54 of one phase out of the U, V, and W phases, thereby forming a plurality of coil portions 78. As a result, it becomes possible to wind the winding 70 around the plurality of teeth portions 54 with a continuous wire, thereby improving productivity.

[0733] In particular, the rotating motor 10 is an inner rotor type brushless motor in which multiple teeth 54 extend radially inward from the core 50, and according to the 12th embodiment, it is possible to realize a small, high-output, and low-cost inner rotor type brushless motor.

[0734] Moreover, in the twelfth embodiment, the multiple power input wires 82 are arranged on one axial side Z2 of the core 50, and the multiple jumper wires 84 are arranged on the other axial side Z1 of the core 50. Therefore, the multiple power input wires 82 and the multiple jumper wires 84 do not cross each other, and therefore it is possible to prevent the power input wires 82 and the jumper wires 84 from becoming entangled in the winding shaping process.

[0735] Furthermore, since the multiple power input lines 82 and the multiple crossover lines 84 do not intersect with each other, they can be accommodated orderly on the one axial side Z2 and the other axial side Z1 in the assembly process.

[0736] Furthermore, each of the multiple power input lines 82 is wired across two teeth portions 54. Therefore, the distance between both ends of the power input lines 82 and the distance between both ends of the jumper lines 84 are sufficiently secured, which also makes it possible to prevent the jumper lines 84 between the coil portions 78 and the power input lines 82 from becoming entangled in a complicated manner.

[0737] Moreover, each of the multiple jumper wires 84 is wired across two or 2 × 2 tooth portions 54. Therefore, the distance between both ends of the power input wire 82 and the distance between both ends of the jumper wire 84 are sufficiently secured, which also makes it possible to prevent the jumper wires 84 between the coil portions 78 and the power input wires 82 from becoming entangled in a complicated manner.

[0738] (Modification) Next, a modification of the twelfth embodiment will be described.

[0739] The stator 20 according to the twelfth embodiment has k=2 and n=2 as an example of a k-series, n-parallel delta connection where k is an even number, but the manufacturing method of the stator 20 according to the twelfth embodiment is applicable to all three-phase brushless motors in which the number of slots, teeth portions 54, and coil portions 78 is a multiple of 6 and is 12 or more. For example, the number of slots, teeth portions 54, and coil portions 78 can be 12 (k=2 and n=2), 18 (k=3 and n=2, or k=2 and n=3), 24 (k=4 and n=2, or k=2 and n=4), 30 (k=5 and n=2, or k=2 and n=5), 36 (k=6 and n=2, k=3 and n=4, k=4 and n=3, or k=2 and n=6), etc.

[0740] In the twelfth embodiment, the same modified examples as those in the third embodiment can be adopted for the same configurations and methods as those in the third embodiment.

[0741] In the winding process according to the twelfth embodiment, the V-phase coil portions V1 to V4 of the U-phase, V-phase, and W-phase coils are wound by moving the nozzle 120 to the other circumferential side R2 of the core 50, but the winding process according to the present embodiment is not limited to this. For example, the U-phase coil portions U1 to U4 or the W-phase coil portions W1 to W4 may be wound by moving the nozzle 120 to the other circumferential side R2 of the core 50. Even in this case, it is possible to wind the winding 70 around the multiple teeth portions 54 using a continuous wire, thereby improving productivity.

[0742] [Thirteenth embodiment of the manufacturing method for a rotating electric machine] Next, a thirteenth embodiment of the method for manufacturing the rotating electric machine 10 according to an embodiment of the present invention will be described.

[0743] The thirteenth embodiment of the method for manufacturing the rotating electric machine 10 is different from the twelfth embodiment of the method for manufacturing the rotating electric machine 10 described above in that the winding winding step is changed as follows.

[0744] (Winding process) In the thirteenth embodiment, as an example, a first nozzle 122 and a second nozzle 124 are used, and a first winding 72 and a second winding 74, which are two continuous wires, are wound in sequence around the teeth portions 54 by a double nozzle method. Fig. 37 is a diagram showing a winding process in the thirteenth embodiment, and Table 13 is a process table showing the winding order of the winding process in the thirteenth embodiment.

[0745] In the winding process in the thirteenth embodiment, the first winding 72 and the second winding 74 are wound in the following order of steps 1 to 6. In the drawing, circled numbers 1 to 6 indicate the order in which the multiple coil portions 78 are formed.

[0746] (1st Step-1) In a first step, the winding 70 is wound around the first teeth portion 54U1 from one axial side Z2 of the core 50 by a first nozzle 122 (see FIG. 18). The winding 70 is also wound clockwise as viewed in the axial direction by an integer+0.5 number of turns to form the first coil portion 78U1.

[0747] Thereafter, the winding 70 is routed from the other axial side Z1 to one circumferential side R1 across the fourth coil portion 54U2 to form a first crossover wire 84U1-U2.

[0748] (1st Step-2) Similarly, in the first step, the second winding 74 is wound around the seventh teeth portion 54U3 from one axial side Z2 of the core 50 by the second nozzle 124 (see FIG. 18). Also, the second winding 74 is wound clockwise as viewed in the axial direction for an integer+0.5 number of turns to form the seventh coil portion 78U3.

[0749] Thereafter, the second winding 74 is wired from the other axial side Z1 to the one circumferential side R1 across the tenth coil portion 54U4 to form a fourth crossover 84U3-U4.

[0750] (2nd Step-1) In the second step, the first winding 72 is wound clockwise from the other axial side Z1 of the core 50 to the fourth teeth portion 54U2 by the first nozzle 122 (see Figure 18) for an integer + 0.5 number of turns as viewed from the axial direction to form the fourth coil portion 78U2, and then led out to one axial side Z2 of the core 50.

[0751] Thereafter, the first winding 72 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the second power input line 82U2-V2 is formed by a continuous wire across the fifth coil portion 54V2.

[0752] (2nd Step-2) Similarly, in the second step, the second winding 74 is wound clockwise from the other axial side Z1 of the core 50 to the tenth tooth portion 54U4 by the second nozzle 124 (see FIG. 18) for an integer+0.5 number of turns as viewed axially to form the tenth coil portion 78U4, and then led out to the one axial side Z2 of the core 50.

[0753] Thereafter, the second winding 74 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the fifth power input line 82U4-V4 is formed by a continuous wire across the eleventh coil portion 54V4.

[0754] (Third Step-1) In a third step, the first winding 72 is wound around the fifth teeth portion 54V2 from one axial side Z2 of the core 50 by the first nozzle 122 (see FIG. 18). The fifth coil portion 78V2 is formed by winding the first winding 72 a number of turns that is an integer + 0.5 in the clockwise direction as viewed in the axial direction.

[0755] Thereafter, the first winding 72 is routed from the other axial side Z1 to the other circumferential side R2 across the second coil portion 54V1 to form a second jumper 84V2-V1.

[0756] (Third Step-2) Similarly, in a third step, the second winding 74 is wound around the eleventh tooth portion 54V4 from one axial side Z2 of the core 50 by the second nozzle 124 (see FIG. 18). Also, the second winding 74 is wound clockwise as viewed from the axial direction by an integer+0.5 number of turns to form the eleventh coil portion 78V4.

[0757] Thereafter, the second winding 74 is routed from the other axial side Z1 to the other circumferential side R2 across the eighth coil portion 54V3 to form a fifth jumper 84V4-V3.

[0758] (4th Step-1) In the fourth step, the first winding 72 is wound clockwise from the other axial side Z1 of the core 50 to the second teeth portion 54V1 by the first nozzle 122 (see Figure 18) for an integer + 0.5 number of turns as viewed from the axial direction to form the second coil portion 78V1, and then led out to one axial side Z2 of the core 50.

[0759] Thereafter, the first winding 72 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the first power input line 82V1-W1 across the third coil portion 54W1 is formed by a continuous wire.

[0760] (4th Step-2) Similarly, in the fourth step, the second winding 74 is wound clockwise from the other axial side Z1 of the core 50 to the eighth tooth portion 54V3 by the second nozzle 124 (see Figure 18) for an integer + 0.5 number of turns as viewed from the axial direction to form the eighth coil portion 78V3, and then led out to the one axial side Z2 of the core 50.

[0761] Thereafter, the second winding 74 is routed from one axial side Z2 of the core 50 to one circumferential side R1, and the fourth power input line 82V3-W3 is formed by a continuous wire across the ninth coil portion 54W3.

[0762] (5th Step-1) In a fifth step, the first winding 72 is wound around the third teeth portion 54W1 from one axial side Z2 of the core 50 by the first nozzle 122 (see FIG. 18). Also, the first winding 72 is wound clockwise as viewed in the axial direction for an integer+0.5 number of turns to form the third coil portion 78W1.

[0763] Thereafter, the first winding 72 is routed from the other axial side Z1 to the one circumferential side R1 across the sixth coil portion 54W2 to form a third jumper 84W1-W2.

[0764] (5th Step-2) Similarly, in the fifth step, the second winding 74 is wound around the ninth tooth portion 54W3 from one axial side Z2 of the core 50 by the second nozzle 124 (see FIG. 18). The ninth coil portion 78W3 is formed by winding the second winding 74 clockwise as viewed in the axial direction for an integer+0.5 number of turns.

[0765] Thereafter, the second winding 74 is routed from the other axial side Z1 to the one circumferential side R1 across the twelfth coil portion 54W4 to form a sixth jumper 84W3-W4.

[0766] (6th Step-1) In the sixth step, the first winding 72 is wound clockwise from the other axial side Z1 of the core 50 to the sixth teeth portion 54W2 by the first nozzle 122 (see Figure 18) for an integer + 0.5 number of turns as viewed from the axial direction to form the sixth coil portion 78W2, and then led out to the one axial side Z2 of the core 50.

[0767] Thereafter, the first winding 72 is wired from one axial side Z2 of the core 50 to one circumferential side R1 to the winding starting end 82E of the second winding 74, and a first connection portion 92 is formed by a wiring process described below, and a third power input line 82W2-U3 is formed.

[0768] (6th Step-2) Similarly, in the sixth step, the second winding 74 is wound clockwise from the other axial side Z1 of the core 50 to the twelfth tooth portion 54W4 by the second nozzle 124 (see FIG. 18) for an integer+0.5 number of turns as viewed from the axial direction to form the twelfth coil portion 78W4, and then led out to the one axial side Z2 of the core 50.

[0769] Thereafter, the first winding 72 is wired from one axial side Z2 of the core 50 to one circumferential side R1 to the winding starting end 82C of the first winding 72, and a second connection portion 94 is formed by a wiring process described below, and a sixth power input line 82W4-U1 is formed.

[0770] Then, by forming the first connecting portion 92 and the second connecting portion 94, the first winding 72 and the second winding 74 form a single continuous winding 70.

[0771] [Table 13]

[0772] In the thirteenth embodiment, a two-series, two-parallel delta connection is formed in the above manner. According to the winding process in the thirteenth embodiment, a connection configuration of a plurality of coil portions 78 can be obtained similarly to the twelfth embodiment, except that a first connection portion 92 and a second connection portion 94 are formed instead of one connection portion 90 (see FIG. 17).

[0773] Each of the multiple power input lines 82 is wired across two teeth portions 54. Each of the multiple first direction crossover wires is wired across two teeth portions 54, and each of the multiple second direction crossover wires is wired across 2 × 2 teeth portions 54.

[0774] The first winding 72 and the second winding 74 are each formed of a single continuous wire, and one of the multiple power input lines 82 has a connection portion connecting a winding end 82F of the second winding 74 and a winding start end 82C of the first winding 72, and one of the power input lines 82 has a connection portion connecting a winding end 82D of the first winding 72 and a winding start end 82E of the second winding 74. The multiple power input lines 82 are connected to connection terminals 98 one by one.

[0775] In addition, the first power input line 82V1-W1, the second power input line 82U2-V2, the third power input line 82W2-U3, the fourth power input line 82V3-W3, the fifth power input line 82U4-V4, and the sixth power input line 82W4-U1 are arranged on one axial side Z2 of the core 50, and the first crossover line 84U1-U2, the second crossover line 84V2-V1, the third crossover line 84W1-W2, the fourth crossover line 84U3-U4, the fifth crossover line 84V4-V3, and the sixth crossover line 84W3-W4 are arranged on the other axial side Z1 of the core 50.

[0776] The first power input line 82V1-W1, the second power input line 82U2-V2, the third power input line 82W2-U3, the fourth power input line 82V3-W3, the fifth power input line 82U4-V4, and the sixth power input line 82W4-U1 are wired continuously, and the first crossover line 84U1-U2, the second crossover line 84V2-V1, the third crossover line 84W1-W2, the fourth crossover line 84U3-U4, the fifth crossover line 84V4-V3, and the sixth crossover line 84W3-W4 are arranged on the other axial side Z1 of the core 50. The first power input line 82V1-W1, the second power input line 82U2-V2, the third power input line 82W2-U3, the fourth power input line 82V3-W3, the fifth power input line 82U4-V4, and the sixth power input line 82W4-U1 are disposed on one axial side Z2 of the core 50. The third power input line 82W2-U3 has a first connection portion 92 connecting the winding end 82D of the first winding 72 and the winding start end 82E of the second winding 74, and the sixth power input line 82W4-U1 has a second connection portion 94 connecting the winding end 82F of the second winding 74 and the winding start end 82C of the first winding 72.

[0777] Furthermore, in the winding process of the thirteenth embodiment, of the multiple coil sections 78, the U-phase coil sections U1 to U4 and the W-phase coil sections W1 to W4 are wound by moving the first nozzle 122 and the second nozzle 124 to one circumferential side R1 of the core 50, and the V-phase coil sections V1 to V4 are wound by moving the first nozzle 122 and the second nozzle 124 to the other circumferential side R2 of the core 50.

[0778] After the winding process, for example, each of the split cores 56 is cut off from the temporary joint molding runner 106 and connected in an annular shape with the teeth portions 54 facing radially inward.

[0779] (winding shaping process, wire connection process and assembly process) In the thirteenth embodiment, the winding shaping process, the connection process, and the assembly process are the same as those in the twelfth embodiment. In the thirteenth embodiment of the method for manufacturing the rotating electric machine 10, the rotating electric machine 10 (see FIG. 1) is manufactured in the above-described manner. The configuration of the rotating electric machine 10 manufactured in the above-described manner is the same as that of the twelfth embodiment, except that a first connection portion 92 and a second connection portion 94 are formed instead of one connection portion 90 (see FIG. 17).

[0780] (Action and Effects) In the thirteenth embodiment described above, the same functions and effects as those of the twelfth embodiment can be obtained with respect to the same configuration and method as those of the twelfth embodiment.

[0781] 37, in the winding process in the thirteenth embodiment, the first nozzle 122 and the second nozzle 124 move to one circumferential side R1 of the core 50 to wind the teeth portions 54 of two phases out of the U, V, and W phases, and the first nozzle 122 and the second nozzle 124 move to the other circumferential side R2 of the core 50 to wind the teeth portions 54 of one phase out of the U, V, and W phases, thereby forming a plurality of coil portions 78. As a result, it becomes possible to wind the first winding 72 and the second winding 74 with a continuous wire around the plurality of teeth portions 54, thereby improving productivity.

[0782] In particular, the rotating motor 10 is an inner rotor type brushless motor in which multiple teeth 54 extend radially inward from the core 50, and according to the thirteenth embodiment, it is possible to realize a small, high-output, and low-cost inner rotor type brushless motor.

[0783] Moreover, the multiple power input wires 82 are arranged on one axial side Z2 of the core 50, and the multiple jumper wires 84 are arranged on the other axial side Z1 of the core 50. Therefore, the multiple power input wires 82 and the multiple jumper wires 84 do not cross each other, and therefore it is possible to prevent the power input wires 82 and the jumper wires 84 from becoming entangled in the winding shaping process.

[0784] Furthermore, since the multiple power input lines 82 and the multiple crossover lines 84 do not intersect with each other, they can be accommodated orderly on the one axial side Z2 and the other axial side Z1 in the assembly process.

[0785] Furthermore, each of the multiple power input lines 82 is wired across two teeth portions 54. Therefore, the distance between both ends of the power input lines 82 and the distance between both ends of the jumper lines 84 are sufficiently secured, which also makes it possible to prevent the jumper lines 84 between the coil portions 78 and the power input lines 82 from becoming entangled in a complicated manner.

[0786] Moreover, each of the multiple jumper wires 84 is wired across two or 2 × 2 tooth portions 54. Therefore, the distance between both ends of the power input wire 82 and the distance between both ends of the jumper wire 84 are sufficiently secured, which also makes it possible to prevent the jumper wires 84 between the coil portions 78 and the power input wires 82 from becoming entangled in a complicated manner.

[0787] In the thirteenth embodiment, a first nozzle 122 and a second nozzle 124 are used to sequentially wind a first winding 72 and a second winding 74, which are two continuous wires, around the multiple teeth 54 using a double nozzle system. Therefore, compared to the twelfth embodiment described above, in which a single nozzle 120 (see FIG. 4) is used to sequentially wind a single continuous wire, the winding 70, around the multiple teeth 54 using a single nozzle system, the number of steps in the winding process can be halved. This allows the process time to be shortened, and therefore the manufacturing costs to be reduced.

[0788] (Modification) Next, a modification of the thirteenth embodiment will be described.

[0789] The stator 20 according to the thirteenth embodiment has k=2 and n=2 as an example of a k-series, n-parallel delta connection where k is an even number, but the manufacturing method of the stator 20 according to the thirteenth embodiment is applicable to all three-phase brushless motors in which n is a multiple of 2 and the number of slots, teeth portions 54, and coil portions 78 is a multiple of 12 and is 12 or more. For example, the numbers of slots, teeth portions 54, and coil portions 78 can be 12 (k=2 and n=2), 24 (k=4 and n=2, or k=2 and n=4), 36 (k=6 and n=2, k=3 and n=4, or k=2 and n=6), 48 (k=8 and n=2, k=4 and n=4, or k=2 and n=8), etc.

[0790] Also in the thirteenth embodiment, the same modified examples as in the fourth embodiment can be adopted for the same configurations and methods as in the twelfth embodiment.

[0791] In the winding process according to the thirteenth embodiment, the coil parts V1 to V4 of the U, V, and W phases are wound by moving the first nozzle 122 and the second nozzle 124 to the other circumferential side R2 of the core 50, but the winding process according to the present embodiment is not limited thereto. For example, the coil parts U1 to U4 of the U phase or the coil parts W1 to W4 of the W phase may be wound by moving the first nozzle 122 and the second nozzle 124 to the other circumferential side R2 of the core 50. Even in this case, the first winding 72 and the second winding 74 can be wound around the multiple teeth 54 by a continuous wire, which can improve productivity.

[0792] Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and it goes without saying that the present invention can be implemented in various modified forms without departing from the spirit and scope of the present invention. [Explanation of symbols]

[0793] Reference Signs List 10... rotating electric machine, 16... motor shaft, 18... rotor, 20... stator, 22... motor housing, 24... front housing, 26... bearing, 28... circuit board, 30... rotor body, 32... rotor magnet, 50... core, 54... teeth portion, 56... split core, 60... core body, 62... insulator, 70... winding, 72... first winding, 74... second winding, 76... third winding Winding, 78...coil portion, 80...coil group, 82...power input line, 84...crossover wire, 90...connection portion, 92...first connection portion, 94...second connection portion, 96...third connection portion, 98...connection terminal, 100...jig, 102...corner portion, 104...jig, 106...temporary connection molding runner, 108...temporary connection molding runner, 120...nozzle, 122...first nozzle, 124...second nozzle, 126...third nozzle, 54U1...1st teeth portion, 54U2...4th teeth portion, 54U3...7th teeth portion, 54U4...10th teeth portion, 54U5...13th teeth portion, 54U6...16th teeth portion, 54V1...2nd teeth portion, 54V2...5th teeth portion, 54V3...8th teeth portion, 54V4...11th teeth portion, 54V5...14th teeth portion, 54V6...17th teeth portion, 54W1...3rd teeth portion, 54W2...6th teeth portion, 54W3...9th teeth portion, 54W4...12th teeth portion, 54W5...15th teeth portion, 54W6...18th teeth portion, 78A...coil array, 78U1...first coil section, 78U2...fourth coil section, 78U3...seventh coil section, 78U4...tenth coil section, 78U5...thirteenth coil section, 78U6...sixteenth coil section, 78V1...second coil section, 78V2...fifth coil section, 78V3...eighth coil section, 78V4...eleventh coil section, 78V5...fourteenth coil section, 78V6...seventeenth coil section, 78W1...third coil section, 78W2...sixth coil section, 78W3...ninth coil section, 78W4...twelfth coil section, 78W5...fifteenth coil section, 78W6...eighteenth coil section 82A...winding start end, 82B...winding end, 82C...first winding start end, 82D...first winding end, 82E...second winding start end, 82F...second winding end, 82G...third winding start end, 82H...third winding end, 82U2-V2...second power input line, 82U4-V4...second power input line, 82U4-V4...fifth power power input line, 82U6-V6…8th power input line, 82V1-W1…1st power input line, 82V3-W3…4th power input line, 82V5-W5…7th power input line, 82W2-U3…3rd power input line, 82W4-U1…3rd power input line, 82W4-U1…6th power input line, 82W4-U5…6th power input line, 82W6-U1…9th power input line 84U1-U2...1st crossover, 84U2-U3...4th crossover, 84U3-U4...4th crossover, 84U3-U4...7th crossover, 84U5-U6...7th crossover, 84V2-V1...2nd crossover, 84V3-V2...5th crossover, 84V4-V3...5th crossover, 84V4-V3...8th crossover, 84V6-V5...8th crossover, 84W1-W2...3rd crossover, 84W2-W3...6th crossover, 84W3-W4...6th crossover, 84W3-W4...9th crossover, 84W5-W6...9th crossover 98A...third connection terminal, 98A2...sixth connection terminal, 98A3...ninth connection terminal, 98B...second connection terminal, 98B2...fifth connection terminal, 98B3...eighth connection terminal, 98C...first connection terminal, 98C2...fourth connection terminal, 98C3...seventh connection terminal A1: 3rd connection, A2: 6th connection, A3: 9th connection B1: 2nd connection, B2: 5th connection, B3: 8th connection C1: 1st connection, C2: 4th connection, C3: 7th connection R1...One side in the circumferential direction, R2...The other side in the circumferential direction Z1...Other side in the axial direction, Z2...One side in the axial direction

Claims

1. a core having a plurality of split cores each having a plurality of teeth portions formed thereon; a winding having a plurality of coil portions wound around the plurality of teeth portions in a concentrated winding manner, the winding being delta-connected in an m-series / n-parallel manner when m is a natural number of 2 or more and n is a natural number, or delta-connected in a k-series / n-parallel manner when k is an even number and n is a natural number; having the plurality of coil portions are arranged such that a U-phase coil portion forming a U-phase, a V-phase coil portion forming a V-phase, and a W-phase coil portion forming a W-phase are repeatedly arranged in order on one circumferential side of the core, The winding has a plurality of power input lines and a plurality of crossover lines, Each of the plurality of power input lines connects an end of one of the coil sections of different phases to a start of another of the coil sections, Each of the plurality of jumper wires includes a first-direction jumper wire that connects an end of one of the coil parts of the same phase to a start of another coil part located on one circumferential side of the core with respect to the one coil part, and a second-direction jumper wire that connects an end of one of the coil parts of the same phase to a start of the other coil part located on the other circumferential side of the core with respect to the one coil part, any one or some of the plurality of power input lines have a connection portion connecting ends of the windings together; Stator.

2. Each of the plurality of power input lines connects an end of one of the coil sections of different phases to a start of another coil section located on one side of the first coil section in a circumferential direction of the core. The stator according to claim 1 .

3. The plurality of teeth portions extend radially inward of the core. The stator according to claim 2 .

4. the plurality of power input lines are disposed on one axial side of the core, The plurality of crossover wires are arranged on one axial side of the core. The stator according to any one of claims 1 to 3.

5. the plurality of power input lines are disposed on one axial side of the core, Some of the plurality of crossover wires are disposed on one axial side of the core, The remaining crossover wires among the plurality of crossover wires are disposed on the other axial side of the core. The stator according to any one of claims 1 to 3.

6. the plurality of power input lines are disposed on one axial side of the core, The plurality of crossover wires are arranged on the other axial side of the core. The stator according to any one of claims 1 to 3.

7. Each of the plurality of power input lines is wired across two of the teeth portions. The stator according to any one of claims 1 to 6.

8. Each of the plurality of power input lines is led out from between adjacent ones of the teeth portions. The stator according to any one of claims 1 to 6.

9. The first direction crossover wire is wired across 2×2 of the teeth portions, The second direction crossover wire is wired across two of the teeth portions. The stator according to any one of claims 1 to 8.

10. The first direction crossover wire is wired across two of the teeth portions, The second direction crossover wire is wired across 2×2 of the teeth portions. The stator according to any one of claims 1 to 8.

11. The coil units are delta-connected in a four-series configuration, The number of the teeth portions is 12, When the twelve teeth portions are arranged in order on one circumferential side of the core as a first teeth portion to a twelfth teeth portion, the plurality of coil portions wound around the first teeth portion to the twelfth teeth portion, respectively, are arranged in order as a first coil portion to a twelfth coil portion, the plurality of power input lines are arranged in order on one circumferential side of the core as a first power input line to a third power input line, and the plurality of jumper lines are arranged in order on one circumferential side of the core as a first jumper line to a ninth jumper line, the first crossover wire, the third crossover wire, the fourth crossover wire, the sixth crossover wire, the seventh crossover wire, and the ninth crossover wire are the first direction crossover wires, The second crossover wire, the fifth crossover wire, and the eighth crossover wire are the second direction crossover wires, The winding is formed of a single continuous wire, and the winding has First, the winding is wound around the first teeth portion in a clockwise direction as viewed in an axial direction of the first teeth portion to form the first coil portion, Then, the winding is wired from the first teeth portion to the fourth teeth portion on one axial side of the core to form the first jumper wire, Secondly, the fourth coil portion is formed by winding the winding in a clockwise direction around the fourth teeth portion as viewed in an axial direction of the fourth teeth portion, Then, the winding is wired from the fourth teeth portion to the seventh teeth portion on one axial side of the core to form the fourth jumper wire, Thirdly, the seventh coil portion is formed by winding the winding in a clockwise direction around the seventh teeth portion as viewed in an axial direction of the seventh teeth portion, Then, the winding is wired from the seventh teeth portion to the tenth teeth portion on one axial side of the core to form the seventh jumper wire, Fourthly, the winding is wound around the tenth teeth portion in a clockwise direction as viewed in the axial direction of the tenth teeth portion to form the tenth coil portion; Then, the winding is wired on one axial side of the core from the tenth teeth portion to the eleventh teeth portion to form the second power input line, Fifth, the winding is wound around the eleventh teeth portion in a clockwise direction as viewed in the axial direction of the eleventh teeth portion to form the eleventh coil portion, Then, the winding is wired from the eleventh teeth portion to the eighth teeth portion on one axial side of the core to form the eighth jumper wire, Sixth, the winding is wound around the eighth teeth portion in a clockwise direction as viewed in the axial direction of the eighth teeth portion to form the eighth coil portion, Then, the winding is wired from the eighth teeth portion to the fifth teeth portion on one axial side of the core to form the fifth jumper wire, Seventh, the fifth coil portion is formed by winding the winding in a clockwise direction around the fifth teeth portion as viewed in an axial direction of the fifth teeth portion, Then, the winding is wired from the fifth teeth portion to the second teeth portion on one axial side of the core to form the second jumper wire, Eighth, the winding is wound around the second teeth portion in a clockwise direction as viewed in an axial direction of the second teeth portion to form the second coil portion, Then, the winding is wired on one axial side of the core from the second teeth portion to the third teeth portion to form the first power input line, Ninth, the winding is wound around the third teeth portion in a clockwise direction as viewed in an axial direction of the third teeth portion to form the third coil portion, Then, the winding is wired from the third teeth portion to the sixth teeth portion on one axial side of the core to form the third jumper wire, Tenth, the winding is wound around the sixth teeth portion in a clockwise direction as viewed in an axial direction of the sixth teeth portion to form the sixth coil portion, Then, the winding is wired from the sixth teeth portion to the ninth teeth portion on one axial side of the core to form the sixth jumper wire, Eleventh, the winding is wound around the ninth teeth portion in a clockwise direction as viewed in the axial direction of the ninth teeth portion to form the ninth coil portion, Then, the winding is wired from the ninth teeth portion to the twelfth teeth portion on one axial side of the core to form the ninth jumper wire, Twelfth, the winding is wound around the twelfth teeth portion in a clockwise direction as viewed in the axial direction of the twelfth teeth portion to form the twelfth coil portion, Then, the connection portion that connects the ends of the windings to each other is formed on one axial side of the core, thereby forming the third power input line. The stator according to claim 2 .

12. The coil units are delta-connected in a four-series configuration, The number of the teeth portions is 12, When the twelve teeth portions are arranged in order on one circumferential side of the core as a first teeth portion to a twelfth teeth portion, the plurality of coil portions wound around the first teeth portion to the twelfth teeth portion, respectively, are arranged in order as a first coil portion to a twelfth coil portion, the plurality of power input lines are arranged in order on one circumferential side of the core as a first power input line to a third power input line, and the plurality of jumper lines are arranged in order on one circumferential side of the core as a first jumper line to a ninth jumper line, the first crossover wire, the third crossover wire, the fourth crossover wire, the sixth crossover wire, the seventh crossover wire, and the ninth crossover wire are the first direction crossover wires, The second crossover wire, the fifth crossover wire, and the eighth crossover wire are the second direction crossover wires, The winding is composed of a first winding and a second winding, and the winding has First, the winding is wound around the first teeth portion in a counterclockwise direction as viewed in an axial direction of the first teeth portion to form the first coil portion, Then, the winding is wired from the first teeth portion to the fourth teeth portion on one axial side of the core to form the first jumper wire, Secondly, the fourth coil portion is formed by winding the winding in a counterclockwise direction around the fourth teeth portion as viewed in an axial direction of the fourth teeth portion, Then, the winding is wired from the fourth teeth portion to the seventh teeth portion on one axial side of the core to form the fourth jumper wire, Thirdly, the seventh coil portion is formed by winding the winding in a counterclockwise direction around the seventh teeth portion as viewed in an axial direction of the seventh teeth portion, Then, the winding is wired from the seventh teeth portion to the tenth teeth portion on one axial side of the core to form the seventh jumper wire, Fourthly, the winding is wound around the tenth teeth portion in a counterclockwise direction as viewed in the axial direction of the tenth teeth portion to form the tenth coil portion; Then, the winding is wired on one axial side of the core from the tenth teeth portion to the eleventh teeth portion to form the second power input line, Fifth, the winding is wound around the eleventh teeth portion in a counterclockwise direction as viewed in the axial direction of the eleventh teeth portion to form the eleventh coil portion, Then, the winding is wired from the eleventh teeth portion to the eighth teeth portion on one axial side of the core to form the eighth jumper wire, Sixth, the winding is wound around the eighth teeth portion in a counterclockwise direction as viewed in the axial direction of the eighth teeth portion to form the eighth coil portion, Then, the winding is wired from the eighth teeth portion to the fifth teeth portion on one axial side of the core to form the fifth jumper wire, Seventh, the fifth coil portion is formed by winding the winding in a counterclockwise direction around the fifth teeth portion as viewed in an axial direction of the fifth teeth portion, Then, the winding is wired from the fifth teeth portion to the second teeth portion on one axial side of the core to form the second jumper wire, Eighth, the winding is wound around the second teeth portion in a counterclockwise direction as viewed in an axial direction of the second teeth portion to form the second coil portion, Then, the winding is wired on one axial side of the core from the second teeth portion to the third teeth portion to form the first power input line, Ninth, the winding is wound around the third teeth portion in a counterclockwise direction as viewed in the axial direction of the third teeth portion to form the third coil portion, Then, the winding is wired from the third teeth portion to the sixth teeth portion on one axial side of the core to form the third jumper wire, Tenth, the winding is wound around the sixth teeth portion in a counterclockwise direction as viewed in the axial direction of the sixth teeth portion to form the sixth coil portion, Then, the winding is wired from the sixth teeth portion to the ninth teeth portion on one axial side of the core to form the sixth jumper wire, Eleventh, the winding is wound around the ninth teeth portion in a counterclockwise direction as viewed in the axial direction of the ninth teeth portion to form the ninth coil portion, Then, the winding is wired from the ninth teeth portion to the twelfth teeth portion on one axial side of the core to form the ninth jumper wire, Twelfth, the winding is wound around the twelfth teeth portion in a counterclockwise direction as viewed in the axial direction of the twelfth teeth portion to form the twelfth coil portion, Then, the connection portion that connects the ends of the windings to each other is formed on one axial side of the core, thereby forming the third power input line. The stator according to claim 2 .

13. The plurality of coil units are delta-connected in a two-series, two-parallel configuration, The number of the teeth portions is 12, When the twelve teeth portions are arranged in order on one circumferential side of the core as a first teeth portion to a twelfth teeth portion, the plurality of coil portions wound around the first teeth portion to the twelfth teeth portion, respectively, are arranged in order as a first coil portion to a twelfth coil portion, the plurality of power input lines are arranged in order on one circumferential side of the core as a first power input line to a sixth power input line, and the plurality of jumper lines are arranged in order on one circumferential side of the core as a first jumper line to a sixth jumper line, the first crossover wire, the third crossover wire, the fourth crossover wire, and the sixth crossover wire are the first direction crossover wires, The second crossover wire and the fifth crossover wire are the second direction crossover wires, The winding is formed of a single continuous wire, and the winding has First, the winding is wound around the first teeth portion in a clockwise direction as viewed in an axial direction of the first teeth portion to form the first coil portion, Then, the winding is wired from the first teeth portion to the fourth teeth portion on one axial side of the core to form the first jumper wire, Secondly, the fourth coil portion is formed by winding the winding in a clockwise direction around the fourth teeth portion as viewed in an axial direction of the fourth teeth portion, Then, the winding is wired on one axial side of the core from the fourth teeth portion to the fifth teeth portion to form the second power input line, Thirdly, the fifth coil portion is formed by winding the winding in a clockwise direction around the fifth teeth portion as viewed in an axial direction of the fifth teeth portion, Then, the winding is wired from the fifth teeth portion to the second teeth portion on one axial side of the core to form the second jumper wire, Fourthly, the winding is wound around the second teeth portion in a clockwise direction as viewed in an axial direction of the second teeth portion to form the second coil portion, Then, the winding is wired on one axial side of the core from the second teeth portion to the third teeth portion to form the first power input line, Fifth, the winding is wound around the third teeth portion in a clockwise direction as viewed in an axial direction of the third teeth portion to form the third coil portion, Then, the winding is wired from the third teeth portion to the sixth teeth portion on one axial side of the core to form the third jumper wire, Sixth, the winding is wound around the sixth teeth portion in a clockwise direction as viewed in the axial direction of the sixth teeth portion to form the sixth coil portion, Then, the winding is wired on one axial side of the core from the sixth teeth portion to the seventh teeth portion to form the third power input line, Seventh, the winding is wound around the seventh teeth portion in a clockwise direction as viewed in the axial direction of the seventh teeth portion to form the seventh coil portion, Then, the winding is wired from the seventh teeth portion to the tenth teeth portion on one axial side of the core to form the fourth jumper wire, Eighth, the winding is wound around the tenth teeth portion in a clockwise direction as viewed in the axial direction of the tenth teeth portion to form the tenth coil portion, Then, the winding is wired on one axial side of the core from the tenth teeth portion to the eleventh teeth portion to form the fifth power input line, Ninth, the winding is wound around the eleventh teeth portion in a clockwise direction as viewed in the axial direction of the eleventh teeth portion to form the eleventh coil portion, Then, the winding is wired from the eleventh teeth portion to the eighth teeth portion on one axial side of the core to form the fifth jumper wire, Tenth, the winding is wound around the eighth teeth portion in a clockwise direction as viewed in the axial direction of the eighth teeth portion to form the eighth coil portion, Then, the winding is wired on one axial side of the core from the eighth teeth portion to the ninth teeth portion to form the fourth power input line, Eleventh, the winding is wound around the ninth teeth portion in a clockwise direction as viewed in the axial direction of the ninth teeth portion to form the ninth coil portion, Then, the winding is wired from the ninth teeth portion to the twelfth teeth portion on one axial side of the core to form the sixth jumper wire, Twelfth, the winding is wound around the twelfth teeth portion in a clockwise direction as viewed in the axial direction of the twelfth teeth portion to form the twelfth coil portion, Then, the connection portion that connects the ends of the windings to each other is formed on one axial side of the core, thereby forming the sixth power input line. The stator according to claim 2 .

14. The plurality of coil units are delta-connected in a two-series, two-parallel configuration, The number of the teeth portions is 12, When the twelve teeth portions are arranged in order on one circumferential side of the core as a first teeth portion to a twelfth teeth portion, the plurality of coil portions wound around the first teeth portion to the twelfth teeth portion, respectively, are arranged in order as a first coil portion to a twelfth coil portion, the plurality of power input lines are arranged in order on one circumferential side of the core as a first power input line to a sixth power input line, and the plurality of jumper lines are arranged in order on one circumferential side of the core as a first jumper line to a sixth jumper line, the first crossover wire, the third crossover wire, the fourth crossover wire, and the sixth crossover wire are the first direction crossover wires, The second crossover wire and the fifth crossover wire are the second direction crossover wires, The winding is composed of a first winding and a second winding, and the winding has First, the winding is wound around the first teeth portion in a clockwise direction as viewed in the axial direction of the first teeth portion to form the first coil portion, and the winding is wound around the seventh teeth portion in a clockwise direction as viewed in the axial direction of the seventh teeth portion to form the seventh coil portion, Then, the winding is wired from the first teeth portion to the fourth teeth portion on one axial side of the core to form the first jumper wire, and the winding is wired from the seventh teeth portion to the tenth teeth portion on one axial side of the core to form the fourth jumper wire, Secondly, the fourth coil portion is formed by winding the wire around the fourth teeth portion in a clockwise direction as viewed in the axial direction of the fourth teeth portion, and the tenth coil portion is formed by winding the wire around the tenth teeth portion in a clockwise direction as viewed in the axial direction of the tenth teeth portion, Thereafter, the winding is wired from the fourth teeth portion to the fifth teeth portion on one axial side of the core to form the second power input line, and the winding is wired from the tenth teeth portion to the eleventh teeth portion on one axial side of the core to form the fifth power input line, Thirdly, the fifth coil portion is formed by winding the wire around the fifth teeth portion in a clockwise direction as viewed in the axial direction of the fifth teeth portion, and the eleventh coil portion is formed by winding the wire around the eleventh teeth portion in a clockwise direction as viewed in the axial direction of the eleventh teeth portion, Then, the winding is wired from the fifth teeth portion to the second teeth portion on one axial side of the core to form the second jumper wire, and the winding is wired from the eleventh teeth portion to the eighth teeth portion on one axial side of the core to form the fifth jumper wire, Fourthly, the second coil portion is formed by winding the wire around the second teeth portion in a clockwise direction as viewed in the axial direction of the second teeth portion, and the eighth coil portion is formed by winding the wire around the eighth teeth portion in a clockwise direction as viewed in the axial direction of the eighth teeth portion, Thereafter, the winding is wired from the second teeth portion to the third teeth portion on one axial side of the core to form the first power input line, and the winding is wired from the eighth teeth portion to the ninth teeth portion on one axial side of the core to form the fourth power input line, Fifth, the third coil portion is formed by winding the wire around the third teeth portion in a clockwise direction as viewed in the axial direction of the third teeth portion, and the ninth coil portion is formed by winding the wire around the ninth teeth portion in a clockwise direction as viewed in the axial direction of the ninth teeth portion, Then, the winding is wired from the third teeth portion to the sixth teeth portion on one axial side of the core to form the third jumper wire, and the winding is wired from the ninth teeth portion to the twelfth teeth portion on one axial side of the core to form the sixth jumper wire, Sixth, the sixth coil portion is formed by winding the wire around the sixth teeth portion in a clockwise direction as viewed in the axial direction of the sixth teeth portion, and the twelfth coil portion is formed by winding the wire around the twelfth teeth portion in a clockwise direction as viewed in the axial direction of the twelfth teeth portion, Then, a first connection portion is formed on one axial side of the core to connect a winding start end of the second winding and a winding end end of the first winding to form the third power input line, and a second connection portion is formed on one axial side of the core to connect a winding start end of the first winding and a winding end end of the second winding to form the sixth power input line. The stator according to claim 2 .

15. The plurality of coil units are delta-connected in a two-series, two-parallel configuration, The number of the teeth portions is 12, When the twelve teeth portions are arranged in order on one circumferential side of the core as a first teeth portion to a twelfth teeth portion, the plurality of coil portions wound around the first teeth portion to the twelfth teeth portion, respectively, are arranged in order as a first coil portion to a twelfth coil portion, the plurality of power input lines are arranged in order on one circumferential side of the core as a first power input line to a sixth power input line, and the plurality of jumper lines are arranged in order on one circumferential side of the core as a first jumper line to a sixth jumper line, the first crossover wire, the third crossover wire, the fourth crossover wire, and the sixth crossover wire are the first direction crossover wires, The second crossover wire and the fifth crossover wire are the second direction crossover wires, The winding is formed of a single continuous wire, and the winding has First, the winding is wound around the first teeth portion in a counterclockwise direction as viewed in an axial direction of the first teeth portion to form the first coil portion, Then, the winding is wired from the first teeth portion to the fourth teeth portion on one axial side of the core to form the first jumper wire, Secondly, the fourth coil portion is formed by winding the winding in a counterclockwise direction around the fourth teeth portion as viewed in an axial direction of the fourth teeth portion, Then, the winding is wired on one axial side of the core from the fourth teeth portion to the fifth teeth portion to form the second power input line, Thirdly, the fifth coil portion is formed by winding the winding in a counterclockwise direction around the fifth teeth portion as viewed in an axial direction of the fifth teeth portion, Then, the winding is wired from the fifth teeth portion to the second teeth portion on one axial side of the core to form the second jumper wire, Fourthly, the winding is wound around the second teeth portion in a counterclockwise direction as viewed in the axial direction of the second teeth portion to form the second coil portion, Then, the winding is wired on one axial side of the core from the second teeth portion to the third teeth portion to form the first power input line, Fifth, the winding is wound around the third teeth portion in a counterclockwise direction as viewed in the axial direction of the third teeth portion to form the third coil portion, Then, the winding is wired from the third teeth portion to the sixth teeth portion on one axial side of the core to form the third jumper wire, Sixth, the winding is wound around the sixth teeth portion in a counterclockwise direction as viewed in the axial direction of the sixth teeth portion to form the sixth coil portion, Then, the winding is wired on one axial side of the core from the sixth teeth portion to the seventh teeth portion to form the third power input line, Seventh, the winding is wound around the seventh teeth portion in a counterclockwise direction as viewed in the axial direction of the seventh teeth portion to form the seventh coil portion, Then, the winding is wired from the seventh teeth portion to the tenth teeth portion on one axial side of the core to form the fourth jumper wire, Eighth, the winding is wound around the tenth teeth portion in a counterclockwise direction as viewed in the axial direction of the tenth teeth portion to form the tenth coil portion, Then, the winding is wired on one axial side of the core from the tenth teeth portion to the eleventh teeth portion to form the fifth power input line, Ninth, the winding is wound around the eleventh teeth portion in a counterclockwise direction as viewed in the axial direction of the eleventh teeth portion to form the eleventh coil portion; Then, the winding is wired from the eleventh teeth portion to the eighth teeth portion on one axial side of the core to form the fifth jumper wire, Tenth, the winding is wound around the eighth teeth portion in a counterclockwise direction as viewed in the axial direction of the eighth teeth portion to form the eighth coil portion, Then, the winding is wired on one axial side of the core from the eighth teeth portion to the ninth teeth portion to form the fourth power input line, Eleventh, the winding is wound around the ninth teeth portion in a counterclockwise direction as viewed in the axial direction of the ninth teeth portion to form the ninth coil portion, Then, the winding is wired from the ninth teeth portion to the twelfth teeth portion on one axial side of the core to form the sixth jumper wire, Twelfth, the winding is wound around the twelfth teeth portion in a counterclockwise direction as viewed in the axial direction of the twelfth teeth portion to form the twelfth coil portion, Then, the connection portion that connects the ends of the windings to each other is formed on one axial side of the core, thereby forming the sixth power input line. The stator according to claim 2 .

16. The plurality of coil units are delta-connected in a two-series, two-parallel configuration, The number of the teeth portions is 12, When the twelve teeth portions are arranged in order on one circumferential side of the core as a first teeth portion to a twelfth teeth portion, the plurality of coil portions wound around the first teeth portion to the twelfth teeth portion, respectively, are arranged in order as a first coil portion to a twelfth coil portion, the plurality of power input lines are arranged in order on one circumferential side of the core as a first power input line to a sixth power input line, and the plurality of jumper lines are arranged in order on one circumferential side of the core as a first jumper line to a sixth jumper line, the first crossover wire, the third crossover wire, the fourth crossover wire, and the sixth crossover wire are the first direction crossover wires, The second crossover wire and the fifth crossover wire are the second direction crossover wires, The winding is composed of a first winding and a second winding, and the winding has First, the winding is wound around the first teeth portion in a counterclockwise direction as viewed in the axial direction of the first teeth portion to form the first coil portion, and the winding is wound around the seventh teeth portion in a counterclockwise direction as viewed in the axial direction of the seventh teeth portion to form the seventh coil portion, Then, the winding is wired from the first teeth portion to the fourth teeth portion on one axial side of the core to form the first jumper wire, and the winding is wired from the seventh teeth portion to the tenth teeth portion on one axial side of the core to form the fourth jumper wire, Secondly, the fourth coil portion is formed by winding the wire around the fourth teeth portion in a counterclockwise direction as viewed in the axial direction of the fourth teeth portion, and the tenth coil portion is formed by winding the wire around the tenth teeth portion in a counterclockwise direction as viewed in the axial direction of the tenth teeth portion, Thereafter, the winding is wired from the fourth teeth portion to the fifth teeth portion on one axial side of the core to form the second power input line, and the winding is wired from the tenth teeth portion to the eleventh teeth portion on one axial side of the core to form the fifth power input line, Thirdly, the fifth coil portion is formed by winding the wire around the fifth teeth portion in a counterclockwise direction as viewed in the axial direction of the fifth teeth portion, and the eleventh coil portion is formed by winding the wire around the eleventh teeth portion in a counterclockwise direction as viewed in the axial direction of the eleventh teeth portion, Then, the winding is wired from the fifth teeth portion to the second teeth portion on one axial side of the core to form the second jumper wire, and the winding is wired from the eleventh teeth portion to the eighth teeth portion on one axial side of the core to form the fifth jumper wire, Fourthly, the second coil portion is formed by winding the wire around the second teeth portion in a counterclockwise direction as viewed in the axial direction of the second teeth portion, and the eighth coil portion is formed by winding the wire around the eighth teeth portion in a counterclockwise direction as viewed in the axial direction of the eighth teeth portion, Thereafter, the winding is wired from the second teeth portion to the third teeth portion on one axial side of the core to form the first power input line, and the winding is wired from the eighth teeth portion to the ninth teeth portion on one axial side of the core to form the fourth power input line, Fifth, the third coil portion is formed by winding the wire around the third teeth portion in a counterclockwise direction as viewed in the axial direction of the third teeth portion, and the ninth coil portion is formed by winding the wire around the ninth teeth portion in a counterclockwise direction as viewed in the axial direction of the ninth teeth portion, Then, the winding is wired from the third teeth portion to the sixth teeth portion on one axial side of the core to form the third jumper wire, and the winding is wired from the ninth teeth portion to the twelfth teeth portion on one axial side of the core to form the sixth jumper wire, Sixth, the sixth coil portion is formed by winding the wire around the sixth teeth portion in a counterclockwise direction as viewed in the axial direction of the sixth teeth portion, and the twelfth coil portion is formed by winding the wire around the twelfth teeth portion in a counterclockwise direction as viewed in the axial direction of the twelfth teeth portion, Then, a first connection portion is formed on one axial side of the core to connect a winding start end of the second winding and a winding end end of the first winding to form the third power input line, and a second connection portion is formed on one axial side of the core to connect a winding start end of the first winding and a winding end end of the second winding to form the sixth power input line. The stator according to claim 2 .

17. The plurality of coil units are delta-connected in a two-in-series, three-in-parallel configuration, The number of the teeth portions is 18, When the 18 teeth portions are arranged in order on one circumferential side of the core as a first teeth portion to an 18th teeth portion, the multiple coil portions wound around the first teeth portion to the 18th teeth portion, respectively, are arranged in order as a first coil portion to an 18th coil portion, the multiple power input lines are arranged in order on one circumferential side of the core as a first power input line to a ninth power input line, and the multiple jumper lines are arranged in order on one circumferential side of the core as a first jumper line to a ninth jumper line, the first crossover wire, the third crossover wire, the fourth crossover wire, the sixth crossover wire, the seventh crossover wire, and the ninth crossover wire are the first direction crossover wires, The second crossover wire, the fifth crossover wire, and the eighth crossover wire are the second direction crossover wires, The winding is composed of a first winding, a second winding and a third winding, and the winding is First, the winding is wound around the first teeth portion in a clockwise direction as viewed in the axial direction of the first teeth portion to form the first coil portion, the winding is wound around the seventh teeth portion in a clockwise direction as viewed in the axial direction of the seventh teeth portion to form the seventh coil portion, and the winding is wound around the 13th teeth portion in a clockwise direction as viewed in the axial direction of the 13th teeth portion to form the 13th coil portion, Then, the winding is wired from the first teeth portion to the fourth teeth portion on one axial side of the core to form the first jumper, the winding is wired from the seventh teeth portion to the tenth teeth portion on one axial side of the core to form the fourth jumper, and the winding is wired from the thirteenth teeth portion to the sixteenth teeth portion on one axial side of the core to form the seventh jumper, Secondly, the winding is wound around the fourth teeth portion in a clockwise direction as viewed in the axial direction of the fourth teeth portion to form the fourth coil portion, the winding is wound around the tenth teeth portion in a clockwise direction as viewed in the axial direction of the tenth teeth portion to form the tenth coil portion, and the winding is wound around the sixteenth teeth portion in a clockwise direction as viewed in the axial direction of the sixteenth teeth portion to form the sixteenth coil portion, Thereafter, the winding is wired from the fourth teeth portion to the fifth teeth portion on one axial side of the core to form the second power input line, the winding is wired from the tenth teeth portion to the eleventh teeth portion on one axial side of the core to form the fifth power input line, and the winding is wired from the sixteenth teeth portion to the seventeenth teeth portion on one axial side of the core to form the eighth power input line, Thirdly, the winding is wound around the 5th teeth portion in a clockwise direction as viewed in the axial direction of the 5th teeth portion to form the 5th coil portion, the winding is wound around the 11th teeth portion in a clockwise direction as viewed in the axial direction of the 11th teeth portion to form the 11th coil portion, and the winding is wound around the 17th teeth portion in a clockwise direction as viewed in the axial direction of the 17th teeth portion to form the 17th coil portion, Then, the winding is wired from the fifth teeth portion to the second teeth portion on one axial side of the core to form the second jumper, the winding is wired from the eleventh teeth portion to the eighth teeth portion on one axial side of the core to form the fifth jumper, and the winding is wired from the seventeenth teeth portion to the fourteenth teeth portion on one axial side of the core to form the eighth jumper, Fourthly, the second coil portion is formed by winding the wire around the second teeth portion in a clockwise direction as viewed in the axial direction of the second teeth portion, the eighth coil portion is formed by winding the wire around the eighth teeth portion in a clockwise direction as viewed in the axial direction of the eighth teeth portion, and the 14th coil portion is formed by winding the wire around the 14th teeth portion in a clockwise direction as viewed in the axial direction of the 14th teeth portion, Thereafter, the winding is wired from the second teeth portion to the third teeth portion on one axial side of the core to form the first power input line, the winding is wired from the eighth teeth portion to the ninth teeth portion on one axial side of the core to form the fourth power input line, and the winding is wired from the fourteenth teeth portion to the fifteenth teeth portion on one axial side of the core to form the seventh power input line, Fifth, the third coil portion is formed by winding the wire around the third teeth portion in a clockwise direction as viewed in the axial direction of the third teeth portion, the ninth coil portion is formed by winding the wire around the ninth teeth portion in a clockwise direction as viewed in the axial direction of the ninth teeth portion, and the 15th coil portion is formed by winding the wire around the 15th teeth portion in a clockwise direction as viewed in the axial direction of the 15th teeth portion, Then, the winding is wired from the third teeth portion to the sixth teeth portion on one axial side of the core to form the third jumper, the winding is wired from the ninth teeth portion to the twelfth teeth portion on one axial side of the core to form the sixth jumper, and the winding is wired from the fifteenth teeth portion to the eighteenth teeth portion on one axial side of the core to form the ninth jumper, Sixth, the winding is wound around the sixth teeth portion in a clockwise direction as viewed in the axial direction of the sixth teeth portion to form the sixth coil portion, the winding is wound around the twelfth teeth portion in a clockwise direction as viewed in the axial direction of the twelfth teeth portion to form the twelfth coil portion, and the winding is wound around the 18th teeth portion in a clockwise direction as viewed in the axial direction of the 18th teeth portion to form the 18th coil portion, Thereafter, a first connection portion connecting a winding start end of the second winding and a winding end end of the first winding are formed on one axial side of the core to form the third power input line, a second connection portion connecting a winding start end of the third winding and a winding end end of the second winding are formed on one axial side of the core to form the sixth power input line, and a third connection portion connecting a winding start end of the first winding and a winding end end of the third winding are formed on one axial side of the core to form the ninth power input line. The stator according to claim 2 .

18. The coil units are delta-connected in a four-series configuration, The number of the teeth portions is 12, When the twelve teeth portions are arranged in order on one circumferential side of the core as a first teeth portion to a twelfth teeth portion, the plurality of coil portions wound around the first teeth portion to the twelfth teeth portion, respectively, are arranged in order as a first coil portion to a twelfth coil portion, the plurality of power input lines are arranged in order on one circumferential side of the core as a first power input line to a third power input line, and the plurality of jumper lines are arranged in order on one circumferential side of the core as a first jumper line to a ninth jumper line, the first crossover wire, the third crossover wire, the fourth crossover wire, the sixth crossover wire, the seventh crossover wire, and the ninth crossover wire are the first direction crossover wires, The second crossover wire, the fifth crossover wire, and the eighth crossover wire are the second direction crossover wires, The winding is formed of a single continuous wire, and the winding has First, the winding is wound around the first teeth portion in a counterclockwise direction as viewed in an axial direction of the first teeth portion to form the first coil portion, Then, the winding is wired from the first teeth portion to the fourth teeth portion on the other axial side of the core to form the first jumper wire; Secondly, the fourth coil portion is formed by winding the winding in a counterclockwise direction around the fourth teeth portion as viewed in an axial direction of the fourth teeth portion, Then, the winding is wired from the fourth teeth portion to the seventh teeth portion on one axial side of the core to form the fourth jumper wire, Thirdly, the seventh coil portion is formed by winding the winding in a counterclockwise direction around the seventh teeth portion as viewed in an axial direction of the seventh teeth portion, Then, the winding is wired from the seventh teeth portion to the tenth teeth portion on the other axial side of the core to form the seventh jumper wire, Fourthly, the winding is wound around the tenth teeth portion in a counterclockwise direction as viewed in the axial direction of the tenth teeth portion to form the tenth coil portion; Then, the winding is wired on one axial side of the core from the tenth teeth portion to the eleventh teeth portion to form the second power input line, Fifth, the winding is wound around the eleventh teeth portion in a counterclockwise direction as viewed in the axial direction of the eleventh teeth portion to form the eleventh coil portion, Then, the winding is wired on the other axial side of the core from the eleventh teeth portion to the eighth teeth portion to form the eighth jumper wire, Sixth, the winding is wound around the eighth teeth portion in a counterclockwise direction as viewed in the axial direction of the eighth teeth portion to form the eighth coil portion, Then, the winding is wired from the eighth teeth portion to the fifth teeth portion on one axial side of the core to form the fifth jumper wire, Seventh, the fifth coil portion is formed by winding the winding in a counterclockwise direction around the fifth teeth portion as viewed in an axial direction of the fifth teeth portion, Then, the winding is wired on the other axial side of the core from the fifth teeth portion to the second teeth portion to form the second jumper wire; Eighth, the winding is wound around the second teeth portion in a counterclockwise direction as viewed in an axial direction of the second teeth portion to form the second coil portion, Then, the winding is wired on one axial side of the core from the second teeth portion to the third teeth portion to form the first power input line, Ninth, the winding is wound around the third teeth portion in a counterclockwise direction as viewed in the axial direction of the third teeth portion to form the third coil portion, Then, the winding is wired on the other axial side of the core from the third teeth portion to the sixth teeth portion to form the third jumper wire, Tenth, the winding is wound around the sixth teeth portion in a counterclockwise direction as viewed in the axial direction of the sixth teeth portion to form the sixth coil portion, Then, the winding is wired from the sixth teeth portion to the ninth teeth portion on one axial side of the core to form the sixth jumper wire, Eleventh, the winding is wound around the ninth teeth portion in a counterclockwise direction as viewed in the axial direction of the ninth teeth portion to form the ninth coil portion, Then, the winding is wired on the other axial side of the core from the ninth teeth portion to the twelfth teeth portion to form the ninth jumper wire, Twelfth, the winding is wound around the twelfth teeth portion in a counterclockwise direction as viewed in the axial direction of the twelfth teeth portion to form the twelfth coil portion, Then, the connection portion that connects the ends of the windings to each other is formed on one axial side of the core, thereby forming the third power input line. The stator according to claim 2 .

19. The coil units are delta-connected in a four-series configuration, The number of the teeth portions is 12, When the twelve teeth portions are arranged in order on one circumferential side of the core as a first teeth portion to a twelfth teeth portion, the plurality of coil portions wound around the first teeth portion to the twelfth teeth portion, respectively, are arranged in order as a first coil portion to a twelfth coil portion, the plurality of power input lines are arranged in order on one circumferential side of the core as a first power input line to a third power input line, and the plurality of jumper lines are arranged in order on one circumferential side of the core as a first jumper line to a ninth jumper line, the first crossover wire, the third crossover wire, the fourth crossover wire, the sixth crossover wire, the seventh crossover wire, and the ninth crossover wire are the first direction crossover wires, The second crossover wire, the fifth crossover wire, and the eighth crossover wire are the second direction crossover wires, The winding is formed of a single continuous wire, and the winding has First, the winding is wound around the first teeth portion in a clockwise direction as viewed in an axial direction of the first teeth portion to form the first coil portion, Then, the winding is wired from the first teeth portion to the fourth teeth portion on the other axial side of the core to form the first jumper wire; Secondly, the fourth coil portion is formed by winding the winding in a clockwise direction around the fourth teeth portion as viewed in an axial direction of the fourth teeth portion, Then, the winding is wired from the fourth teeth portion to the seventh teeth portion on one axial side of the core to form the fourth jumper wire, Thirdly, the seventh coil portion is formed by winding the winding in a clockwise direction around the seventh teeth portion as viewed in an axial direction of the seventh teeth portion, Then, the winding is wired from the seventh teeth portion to the tenth teeth portion on the other axial side of the core to form the seventh jumper wire, Fourthly, the winding is wound around the tenth teeth portion in a clockwise direction as viewed in the axial direction of the tenth teeth portion to form the tenth coil portion; Then, the winding is wired on one axial side of the core from the tenth teeth portion to the eleventh teeth portion to form the second power input line, Fifth, the winding is wound around the eleventh teeth portion in a clockwise direction as viewed in the axial direction of the eleventh teeth portion to form the eleventh coil portion, Then, the winding is wired on the other axial side of the core from the eleventh teeth portion to the eighth teeth portion to form the eighth jumper wire, Sixth, the winding is wound around the eighth teeth portion in a clockwise direction as viewed in the axial direction of the eighth teeth portion to form the eighth coil portion, Then, the winding is wired from the eighth teeth portion to the fifth teeth portion on one axial side of the core to form the fifth jumper wire, Seventh, the fifth coil portion is formed by winding the winding in a clockwise direction around the fifth teeth portion as viewed in an axial direction of the fifth teeth portion, Then, the winding is wired on the other axial side of the core from the fifth teeth portion to the second teeth portion to form the second jumper wire; Eighth, the winding is wound around the second teeth portion in a clockwise direction as viewed in an axial direction of the second teeth portion to form the second coil portion, Then, the winding is wired on one axial side of the core from the second teeth portion to the third teeth portion to form the first power input line, Ninth, the winding is wound around the third teeth portion in a clockwise direction as viewed in an axial direction of the third teeth portion to form the third coil portion, Then, the winding is wired on the other axial side of the core from the third teeth portion to the sixth teeth portion to form the third jumper wire, Tenth, the winding is wound around the sixth teeth portion in a clockwise direction as viewed in an axial direction of the sixth teeth portion to form the sixth coil portion, Then, the winding is wired from the sixth teeth portion to the ninth teeth portion on one axial side of the core to form the sixth jumper wire, Eleventh, the winding is wound around the ninth teeth portion in a clockwise direction as viewed in the axial direction of the ninth teeth portion to form the ninth coil portion, Then, the winding is wired on the other axial side of the core from the ninth teeth portion to the twelfth teeth portion to form the ninth jumper wire, Twelfth, the winding is wound around the twelfth teeth portion in a clockwise direction as viewed in the axial direction of the twelfth teeth portion to form the twelfth coil portion, Then, the connection portion that connects the ends of the windings to each other is formed on one axial side of the core, thereby forming the third power input line. The stator according to claim 2 .

20. The plurality of coil units are delta-connected in a two-series, two-parallel configuration, The number of the teeth portions is 12, When the twelve teeth portions are arranged in order on one circumferential side of the core as a first teeth portion to a twelfth teeth portion, the plurality of coil portions wound around the first teeth portion to the twelfth teeth portion, respectively, are arranged in order as a first coil portion to a twelfth coil portion, the plurality of power input lines are arranged in order on one circumferential side of the core as a first power input line to a sixth power input line, and the plurality of jumper lines are arranged in order on one circumferential side of the core as a first jumper line to a sixth jumper line, the first crossover wire, the third crossover wire, the fourth crossover wire, and the sixth crossover wire are the first direction crossover wires, The second crossover wire and the fifth crossover wire are the second direction crossover wires, The winding is formed of a single continuous wire, and the winding has First, the winding is wound around the first teeth portion in a counterclockwise direction as viewed in an axial direction of the first teeth portion to form the first coil portion, Then, the winding is wired from the first teeth portion to the fourth teeth portion on the other axial side of the core to form the first jumper wire; Secondly, the fourth coil portion is formed by winding the winding in a counterclockwise direction around the fourth teeth portion as viewed in an axial direction of the fourth teeth portion, Then, the winding is wired on one axial side of the core from the fourth teeth portion to the fifth teeth portion to form the second power input line, Thirdly, the fifth coil portion is formed by winding the winding in a counterclockwise direction around the fifth teeth portion as viewed in an axial direction of the fifth teeth portion, Then, the winding is wired on the other axial side of the core from the fifth teeth portion to the second teeth portion to form the second jumper wire; Fourthly, the winding is wound around the second teeth portion in a counterclockwise direction as viewed in the axial direction of the second teeth portion to form the second coil portion, Then, the winding is wired on one axial side of the core from the second teeth portion to the third teeth portion to form the first power input line, Fifth, the winding is wound around the third teeth portion in a counterclockwise direction as viewed in the axial direction of the third teeth portion to form the third coil portion, Then, the winding is wired on the other axial side of the core from the third teeth portion to the sixth teeth portion to form the third jumper wire, Sixth, the winding is wound around the sixth teeth portion in a counterclockwise direction as viewed in the axial direction of the sixth teeth portion to form the sixth coil portion, Then, the winding is wired on one axial side of the core from the sixth teeth portion to the seventh teeth portion to form the third power input line, Seventh, the winding is wound around the seventh teeth portion in a counterclockwise direction as viewed in the axial direction of the seventh teeth portion to form the seventh coil portion, Thereafter, the winding is wired on the other axial side of the core from the seventh teeth portion to the tenth teeth portion to form the fourth jumper wire; Eighth, the winding is wound around the tenth teeth portion in a counterclockwise direction as viewed in the axial direction of the tenth teeth portion to form the tenth coil portion, Then, the winding is wired on one axial side of the core from the tenth teeth portion to the eleventh teeth portion to form the fifth power input line, Ninth, the winding is wound around the eleventh teeth portion in a counterclockwise direction as viewed in the axial direction of the eleventh teeth portion to form the eleventh coil portion; Then, the winding is wired on the other axial side of the core from the eleventh teeth portion to the eighth teeth portion to form the fifth jumper wire, Tenth, the winding is wound around the eighth teeth portion in a counterclockwise direction as viewed in the axial direction of the eighth teeth portion to form the eighth coil portion, Then, the winding is wired on one axial side of the core from the eighth teeth portion to the ninth teeth portion to form the fourth power input line, Eleventh, the winding is wound around the ninth teeth portion in a counterclockwise direction as viewed in the axial direction of the ninth teeth portion to form the ninth coil portion, Then, the winding is wired on the other axial side of the core from the ninth teeth portion to the twelfth teeth portion to form the sixth jumper wire; Twelfth, the winding is wound around the twelfth teeth portion in a counterclockwise direction as viewed in the axial direction of the twelfth teeth portion to form the twelfth coil portion, Then, the connection portion that connects the ends of the windings to each other is formed on one axial side of the core, thereby forming the sixth power input line. The stator according to claim 2 .

21. The plurality of coil units are delta-connected in a two-series, two-parallel configuration, The number of the teeth portions is 12, When the twelve teeth portions are arranged in order on one circumferential side of the core as a first teeth portion to a twelfth teeth portion, the plurality of coil portions wound around the first teeth portion to the twelfth teeth portion, respectively, are arranged in order as a first coil portion to a twelfth coil portion, the plurality of power input lines are arranged in order on one circumferential side of the core as a first power input line to a sixth power input line, and the plurality of jumper lines are arranged in order on one circumferential side of the core as a first jumper line to a sixth jumper line, the first crossover wire, the third crossover wire, the fourth crossover wire, and the sixth crossover wire are the first direction crossover wires, The second crossover wire and the fifth crossover wire are the second direction crossover wires, The winding is composed of a first winding and a second winding, and the winding has First, the winding is wound around the first teeth portion in a counterclockwise direction as viewed in the axial direction of the first teeth portion to form the first coil portion, and the winding is wound around the seventh teeth portion in a counterclockwise direction as viewed in the axial direction of the seventh teeth portion to form the seventh coil portion, Thereafter, the winding is wired from the first teeth portion to the fourth teeth portion on the other axial side of the core to form the first jumper wire, and the winding is wired from the seventh teeth portion to the tenth teeth portion on the other axial side of the core to form the fourth jumper wire, Secondly, the fourth coil portion is formed by winding the wire around the fourth teeth portion in a counterclockwise direction as viewed in the axial direction of the fourth teeth portion, and the tenth coil portion is formed by winding the wire around the tenth teeth portion in a counterclockwise direction as viewed in the axial direction of the tenth teeth portion, Thereafter, the winding is wired from the fourth teeth portion to the fifth teeth portion on one axial side of the core to form the second power input line, and the winding is wired from the tenth teeth portion to the eleventh teeth portion on one axial side of the core to form the fifth power input line, Thirdly, the fifth coil portion is formed by winding the wire around the fifth teeth portion in a counterclockwise direction as viewed in the axial direction of the fifth teeth portion, and the eleventh coil portion is formed by winding the wire around the eleventh teeth portion in a counterclockwise direction as viewed in the axial direction of the eleventh teeth portion, Thereafter, the winding is wired from the fifth teeth portion to the second teeth portion on the other axial side of the core to form the second jumper wire, and the winding is wired from the eleventh teeth portion to the eighth teeth portion on the other axial side of the core to form the fifth jumper wire, Fourthly, the second coil portion is formed by winding the wire around the second teeth portion in a counterclockwise direction as viewed in the axial direction of the second teeth portion, and the eighth coil portion is formed by winding the wire around the eighth teeth portion in a counterclockwise direction as viewed in the axial direction of the eighth teeth portion, Thereafter, the winding is wired from the second teeth portion to the third teeth portion on one axial side of the core to form the first power input line, and the winding is wired from the eighth teeth portion to the ninth teeth portion on one axial side of the core to form the fourth power input line, Fifth, the third coil portion is formed by winding the wire around the third teeth portion in a counterclockwise direction as viewed in the axial direction of the third teeth portion, and the ninth coil portion is formed by winding the wire around the ninth teeth portion in a counterclockwise direction as viewed in the axial direction of the ninth teeth portion, Thereafter, the winding is wired from the third teeth portion to the sixth teeth portion on the other axial side of the core to form the third jumper wire, and the winding is wired from the ninth teeth portion to the twelfth teeth portion on the other axial side of the core to form the sixth jumper wire, Sixth, the sixth coil portion is formed by winding the wire around the sixth teeth portion in a counterclockwise direction as viewed in the axial direction of the sixth teeth portion, and the twelfth coil portion is formed by winding the wire around the twelfth teeth portion in a counterclockwise direction as viewed in the axial direction of the twelfth teeth portion, Then, a first connection portion is formed on one axial side of the core to connect a winding start end of the second winding and a winding end end of the first winding to form the third power input line, and a second connection portion is formed on one axial side of the core to connect a winding start end of the first winding and a winding end end of the second winding to form the sixth power input line. The stator according to claim 2 .

22. The plurality of coil units are delta-connected in a two-series, two-parallel configuration, The number of the teeth portions is 12, When the twelve teeth portions are arranged in order on one circumferential side of the core as a first teeth portion to a twelfth teeth portion, the plurality of coil portions wound around the first teeth portion to the twelfth teeth portion, respectively, are arranged in order as a first coil portion to a twelfth coil portion, the plurality of power input lines are arranged in order on one circumferential side of the core as a first power input line to a sixth power input line, and the plurality of jumper lines are arranged in order on one circumferential side of the core as a first jumper line to a sixth jumper line, the first crossover wire, the third crossover wire, the fourth crossover wire, and the sixth crossover wire are the first direction crossover wires, The second crossover wire and the fifth crossover wire are the second direction crossover wires, The winding is formed of a single continuous wire, and the winding has First, the winding is wound around the first teeth portion in a clockwise direction as viewed in an axial direction of the first teeth portion to form the first coil portion, Then, the winding is wired from the first teeth portion to the fourth teeth portion on the other axial side of the core to form the first jumper wire; Secondly, the fourth coil portion is formed by winding the winding in a clockwise direction around the fourth teeth portion as viewed in an axial direction of the fourth teeth portion, Then, the winding is wired on one axial side of the core from the fourth teeth portion to the fifth teeth portion to form the second power input line, Thirdly, the fifth coil portion is formed by winding the winding in a clockwise direction around the fifth teeth portion as viewed in an axial direction of the fifth teeth portion, Then, the winding is wired on the other axial side of the core from the fifth teeth portion to the second teeth portion to form the second jumper wire; Fourthly, the winding is wound around the second teeth portion in a clockwise direction as viewed in an axial direction of the second teeth portion to form the second coil portion, Then, the winding is wired on one axial side of the core from the second teeth portion to the third teeth portion to form the first power input line, Fifth, the winding is wound around the third teeth portion in a clockwise direction as viewed in an axial direction of the third teeth portion to form the third coil portion, Then, the winding is wired on the other axial side of the core from the third teeth portion to the sixth teeth portion to form the third jumper wire, Sixth, the winding is wound around the sixth teeth portion in a clockwise direction as viewed in the axial direction of the sixth teeth portion to form the sixth coil portion, Then, the winding is wired on one axial side of the core from the sixth teeth portion to the seventh teeth portion to form the third power input line, Seventh, the winding is wound around the seventh teeth portion in a clockwise direction as viewed in the axial direction of the seventh teeth portion to form the seventh coil portion, Thereafter, the winding is wired on the other axial side of the core from the seventh teeth portion to the tenth teeth portion to form the fourth jumper wire; Eighth, the winding is wound around the tenth teeth portion in a clockwise direction as viewed in the axial direction of the tenth teeth portion to form the tenth coil portion, Then, the winding is wired on one axial side of the core from the tenth teeth portion to the eleventh teeth portion to form the fifth power input line, Ninth, the winding is wound around the eleventh teeth portion in a clockwise direction as viewed in the axial direction of the eleventh teeth portion to form the eleventh coil portion, Then, the winding is wired on the other axial side of the core from the eleventh teeth portion to the eighth teeth portion to form the fifth jumper wire, Tenth, the winding is wound around the eighth teeth portion in a clockwise direction as viewed in the axial direction of the eighth teeth portion to form the eighth coil portion, Then, the winding is wired on one axial side of the core from the eighth teeth portion to the ninth teeth portion to form the fourth power input line, Eleventh, the winding is wound around the ninth teeth portion in a clockwise direction as viewed in the axial direction of the ninth teeth portion to form the ninth coil portion, Then, the winding is wired on the other axial side of the core from the ninth teeth portion to the twelfth teeth portion to form the sixth jumper wire; Twelfth, the winding is wound around the twelfth teeth portion in a clockwise direction as viewed in the axial direction of the twelfth teeth portion to form the twelfth coil portion, Then, the connection portion that connects the ends of the windings to each other is formed on one axial side of the core, thereby forming the sixth power input line. The stator according to claim 2 .

23. The plurality of coil units are delta-connected in a two-series, two-parallel configuration, The number of the teeth portions is 12, When the twelve teeth portions are arranged in order on one circumferential side of the core as a first teeth portion to a twelfth teeth portion, the plurality of coil portions wound around the first teeth portion to the twelfth teeth portion, respectively, are arranged in order as a first coil portion to a twelfth coil portion, the plurality of power input lines are arranged in order on one circumferential side of the core as a first power input line to a sixth power input line, and the plurality of jumper lines are arranged in order on one circumferential side of the core as a first jumper line to a sixth jumper line, the first crossover wire, the third crossover wire, the fourth crossover wire, and the sixth crossover wire are the first direction crossover wires, The second crossover wire and the fifth crossover wire are the second direction crossover wires, The winding is composed of a first winding and a second winding, and the winding has First, the winding is wound around the first teeth portion in a clockwise direction as viewed in the axial direction of the first teeth portion to form the first coil portion, and the winding is wound around the seventh teeth portion in a clockwise direction as viewed in the axial direction of the seventh teeth portion to form the seventh coil portion, Thereafter, the winding is wired from the first teeth portion to the fourth teeth portion on the other axial side of the core to form the first jumper wire, and the winding is wired from the seventh teeth portion to the tenth teeth portion on the other axial side of the core to form the fourth jumper wire, Secondly, the fourth coil portion is formed by winding the wire around the fourth teeth portion in a clockwise direction as viewed in the axial direction of the fourth teeth portion, and the tenth coil portion is formed by winding the wire around the tenth teeth portion in a clockwise direction as viewed in the axial direction of the tenth teeth portion, Thereafter, the winding is wired from the fourth teeth portion to the fifth teeth portion on one axial side of the core to form the second power input line, and the winding is wired from the tenth teeth portion to the eleventh teeth portion on one axial side of the core to form the fifth power input line, Thirdly, the fifth coil portion is formed by winding the wire around the fifth teeth portion in a clockwise direction as viewed in the axial direction of the fifth teeth portion, and the eleventh coil portion is formed by winding the wire around the eleventh teeth portion in a clockwise direction as viewed in the axial direction of the eleventh teeth portion, Thereafter, the winding is wired from the fifth teeth portion to the second teeth portion on the other axial side of the core to form the second jumper wire, and the winding is wired from the eleventh teeth portion to the eighth teeth portion on the other axial side of the core to form the fifth jumper wire, Fourthly, the second coil portion is formed by winding the wire around the second teeth portion in a clockwise direction as viewed in the axial direction of the second teeth portion, and the eighth coil portion is formed by winding the wire around the eighth teeth portion in a clockwise direction as viewed in the axial direction of the eighth teeth portion, Thereafter, the winding is wired from the second teeth portion to the third teeth portion on one axial side of the core to form the first power input line, and the winding is wired from the eighth teeth portion to the ninth teeth portion on one axial side of the core to form the fourth power input line, Fifth, the third coil portion is formed by winding the wire around the third teeth portion in a clockwise direction as viewed in the axial direction of the third teeth portion, and the ninth coil portion is formed by winding the wire around the ninth teeth portion in a clockwise direction as viewed in the axial direction of the ninth teeth portion, Thereafter, the winding is wired from the third teeth portion to the sixth teeth portion on the other axial side of the core to form the third jumper wire, and the winding is wired from the ninth teeth portion to the twelfth teeth portion on the other axial side of the core to form the sixth jumper wire, Sixth, the sixth coil portion is formed by winding the wire around the sixth teeth portion in a clockwise direction as viewed in the axial direction of the sixth teeth portion, and the twelfth coil portion is formed by winding the wire around the twelfth teeth portion in a clockwise direction as viewed in the axial direction of the twelfth teeth portion, Then, a first connection portion is formed on one axial side of the core to connect a winding start end of the second winding and a winding end end of the first winding to form the third power input line, and a second connection portion is formed on one axial side of the core to connect a winding start end of the first winding and a winding end end of the second winding to form the sixth power input line. The stator according to claim 2 .

24. A stator according to any one of claims 1 to 10, claims 13 to 17, and claims 20 to 23; a plurality of connection terminals to which two or more of the plurality of power input lines are respectively connected; A rotating electric machine comprising:

25. A stator according to any one of claims 1 to 12, 18, and 19; a plurality of connection terminals to which the plurality of power input lines are respectively connected one by one; A rotating electric machine comprising:

26. A stator according to any one of claims 1 to 23; a circuit board to which each of the plurality of power input lines is directly connected; A rotating electric machine comprising:

27. a core having a plurality of split cores each having a plurality of teeth portions formed thereon; a winding having a plurality of coil portions wound around the plurality of teeth portions in a concentrated winding manner, the winding being delta-connected in an m-series / n-parallel manner when m is a natural number of 2 or more and n is a natural number, or delta-connected in a k-series / n-parallel manner when k is an even number and n is a natural number; A method for manufacturing a stator having the following features: The winding is wound around the teeth so that the coil portions are arranged such that a U-phase coil portion forming a U-phase, a V-phase coil portion forming a V-phase, and a W-phase coil portion forming a W-phase are repeatedly arranged in sequence on one circumferential side of the core, When the winding is wound around the teeth portions, Among the coil portions of different phases, a plurality of power input lines are formed to connect a start end of one coil portion to a terminal end of another coil portion, and among the coil portions of the same phase, a plurality of first direction crossover wires are formed to connect a start end of one coil portion to a terminal end of another coil portion located on one circumferential side of the core with respect to the one coil portion, and at least one second direction crossover wire is formed to connect a terminal end of one coil portion to a start end of another coil portion located on the other circumferential side of the core with respect to the one coil portion, connecting ends of the windings together to form the delta connection in any or some of the plurality of power input lines; A method for manufacturing a stator comprising the steps of:

28. Each of the plurality of power input lines includes a connection between a start end of one of the coil portions of different phases and a termination end of another coil portion located on the other side of the circumferential direction of the core with respect to the one coil portion. A method for manufacturing a stator according to claim 27.

29. Manufacturing the stator by the method for manufacturing a stator according to any one of claims 27 and 28; Each of the plurality of power input lines is connected to two or more connection terminals. A method for manufacturing a rotating electric machine, comprising:

30. Manufacturing the stator by the method for manufacturing a stator according to any one of claims 27 and 28; The plurality of power input lines are connected to a plurality of connection terminals, each of which is connected one by one. A method for manufacturing a rotating electric machine, comprising:

31. Manufacturing the stator by the method for manufacturing a stator according to any one of claims 27 and 28; directly connecting each of the plurality of power input lines to a circuit board; A method for manufacturing a rotating electric machine, comprising:

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