Stator for dynamo-electric machine, dynamo-electric machine, and method of manufacturing stator for dynamo-electric machine

Abstract

To reduce a risk of damaging a coil by removing a bobbin connection portion.SOLUTION: A dynamo-electric machine is configured such that, on a premise that bobbins are disposed on both sides in an axial direction of a tooth portion and a stator core is a split core, a ring-shaped first winding frame wall portion connecting the first direction bobbins adjacent to an inner peripheral side of the first direction first bobbin is disposed, a ring-shaped first connecting portion is disposed on the inner peripheral side of the second direction first bobbin, and the first connecting portion is coupled to the second direction first bobbin via a first coupling portion further on the inner peripheral side than an innermost peripheral end of a coil. Similarly, in the dynamo-electric machine, a second winding frame wall portion and a second connecting portion are disposed, and the second connecting portion is coupled to the first direction second bobbin via the second coupling portion on the inner peripheral side of the innermost peripheral end of the coil. Furthermore, the first coupling portion between the second direction first bobbin and the first connecting portion and the second coupling portion between the first direction second bobbin and the second connecting portion are disconnected in a state where the coil is wound around the bobbin, and the first coupling portion and the second coupling portion are absent in a state where the coil is wound around the bobbin.SELECTED DRAWING: Figure 10

Description

[Technical Field]

[0001] The present specification relates to a stator for a rotating electric machine, a rotating electric machine, and a method for manufacturing a stator for a rotating electric machine, and the rotating electric machine is useful as a generator or starter for a motorcycle, for example. [Background technology]

[0002] In Patent Document 1, bobbins are placed on both axial sides of a stator core for a rotating electrical machine so as to cover the teeth. In Patent Document 2, the stator core is divided into multiple pieces, and a base portion and teeth portion are formed on each of the divided stator cores. A coil is wound around each tooth portion, and then the divided stator cores are assembled. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Patent Publication No. 2018-221565 [Patent Document 2] International Patent Publication No. 2019-156136 Summary of the Invention [Problem to be solved by the invention]

[0004] When bobbins are arranged on both axial sides of the teeth as described in Patent Document 1, the bobbin connections that connect the bobbins between adjacent teeth are also arranged on both sides of the teeth. When the stator core is a split type as in Patent Document 2, the bobbin connections interfere when assembling the split stator core after winding coils around each of the split teeth. Therefore, the bobbin connections must be removed before assembling the split stator core.

[0005] If the connection part is removed before winding the coil, the bobbin may become unstable and fall off the teeth of the stator core during winding. Therefore, the connection part must be removed after the coil is wound. On the other hand, if the connection part is removed after the coil is wound, there is a risk of damaging the coil or the connecting wires connecting the coils when removing the connection part.

[0006] In view of the above points, the present disclosure aims to reduce the risk of damaging the coil by removing the connection portion of the bobbin, assuming that the bobbin is placed on both axial sides of the tooth portion and the stator core is a split core. [Means for solving the problem]

[0007] The first aspect of the present disclosure relates to a stator for a rotating electric machine comprising a ring-shaped base portion having a predetermined width in the axial direction, a plurality of teeth portions formed to protrude radially from the base portion and spaced apart circumferentially, each having a predetermined width in the axial direction, a bobbin covering the circumferential and axial outer periphery of the teeth portions, and a coil wound around the outer periphery of the bobbin.

[0008] In the first stator of the present disclosure, the base portion is divided into two halves in the axial direction, a first base portion and a second base portion, which are stacked in the axial direction such that the first base portion is located on the first axial direction side and the second base portion is located on the second axial direction side. The teeth are divided into two halves in the circumferential direction, with first teeth portions formed to protrude radially from the first base portion and second teeth portions formed to protrude radially from the second base portion, and are spaced apart in the circumferential direction. The bobbins are divided into two halves in the circumferential direction and in the axial direction, with a first-direction first bobbin and a second-direction first bobbin located on the first axial direction side and the second axial direction side of the first teeth portions, respectively.

[0009] In the first stator of the present disclosure, a ring-shaped first reel wall portion is disposed on the inner periphery of the first-direction first bobbin, connecting adjacent first-direction first bobbins in the circumferential direction, located in the first direction of the first base portion. A ring-shaped first connection portion is disposed on the inner periphery of the second-direction first bobbin, connecting adjacent second-direction first bobbins in the circumferential direction, and this first connection portion is connected to the second-direction first bobbin via a first connection portion further inward from the innermost periphery of the coil. A ring-shaped second reel wall portion is disposed on the inner periphery of the second-direction second bobbin, connecting adjacent second-direction second bobbins in the circumferential direction, located in the second direction of the second base portion. A ring-shaped second connection portion is disposed on the inner periphery of the first-direction second bobbin, connecting adjacent first-direction second bobbins in the circumferential direction, and this second connection portion is connected to the first-direction second bobbin via a second connection portion further inward from the innermost periphery of the coil.

[0010] In the first stator of the present disclosure, the first connection portion between the second-direction first bobbin and the first connection portion and the second connection portion between the first-direction second bobbin and the second connection portion are unconnected when the coil is wound on the bobbin, and the first connection portion and the second connection portion do not exist when the coil is wound on the bobbin.

[0011] In the first stator of the present disclosure, the first connection portion is connected to the first bobbin via the first coupling portion further inward from the innermost end of the coil. The first coupling portion is disposed on the inner side of the first bobbin in the second direction. Similarly, the second connection portion is connected to the second bobbin via the second coupling portion further inward from the innermost end of the coil. The second coupling portion is also disposed on the inner side of the second bobbin in the first direction.

[0012] Therefore, in the first stator of the present disclosure, even if the first connecting portion and the second connecting portion are disconnected so that the first connecting portion and the second connecting portion are not present when the coil is wound on the bobbin, the risk of causing any damage to the coil when this disconnection occurs can be reduced. While the first stator of the present disclosure is divided into two, the second stator of the present disclosure is divided into n parts, with n being a natural number greater than or equal to 3. The first base plate portion, the second base plate portion, and the third to nth base plate portions are stacked and arranged in the axial direction such that the first base plate portion is arranged on the first axial direction side, the second base plate portion is arranged on the second axial direction side, and the third to nth base plate portions are arranged midway between the first and second axial directions. The teeth are divided into n parts in the circumferential direction, with first teeth formed to protrude radially from the first base portion, second teeth formed to protrude radially from the second base portion, and third through n-th teeth formed to protrude radially from the third through n-th base portions, which are arranged apart in the circumferential direction.The bobbins are divided into n parts in the circumferential direction and into two parts in the axial direction, with the first-direction first bobbin and the second-direction first bobbin arranged on the first and second axial sides of the first teeth, the first-direction second bobbin and the second-direction second bobbin arranged on the first and second axial sides of the second teeth, and the first-direction third bobbin through the first-direction n-th bobbin and the second-direction third bobbin through the second-direction n-th bobbin arranged on the first and second axial sides of the third through n-th teeth. A ring-shaped first reel wall portion is arranged on the inner peripheral side of the first-direction first bobbin, which is located in the first direction of the first base portion and connects adjacent first-direction first bobbins in the circumferential direction; a ring-shaped second connection portion is arranged on the inner peripheral side of the first-direction second bobbin, which connects adjacent first-direction second bobbins in the circumferential direction, and this second connection portion is connected to the first-direction second bobbin via a second connection portion further inward from the innermost end of the coil; and ring-shaped third-A connection portions to n-A connection portions are arranged on the inner peripheral sides of the first-direction third bobbin to the first-direction nth bobbin, which connect adjacent first-direction third bobbins to the first-direction nth bobbin in the circumferential direction, and these third-A connection portions to n-A connection portions are connected to the first-direction third bobbin to the first-direction nth bobbin further inward from the innermost end of the coil via third-A connection portions to n-A connection portions. A ring-shaped first connection portion is arranged on the inner peripheral side of the second-direction first bobbin, connecting circumferentially adjacent second-direction first bobbins, and this first connection portion is connected to the second-direction first bobbin further inward from the innermost end of the coil via a first connection portion. A ring-shaped second reel wall portion is arranged on the inner peripheral side of the second-direction second bobbin, located in the second direction of the second base portion and connecting circumferentially adjacent second-direction second bobbins. Ring-shaped thirdB connection portions through nthB connection portions are arranged on the inner peripheral sides of the second-direction third bobbin through the second-direction nth bobbin, connecting circumferentially adjacent second-direction third bobbin through the second-direction nth bobbin, and these thirdB connection portions through nthB connection portions are connected to the second-direction third bobbin through the second-direction nth bobbin further inward from the innermost end of the coil via thirdB connection portions through nthB connection portions. The second connection portion between the second first-direction bobbin and the second connection portion, the 3A connection portion through the nA connection portion between the third first-direction bobbin through the nth first-direction bobbin and the 3A connection portion through the nA connection portion, the first connection portion between the first second-direction bobbin and the first connection portion, and the 3B connection portion through the nB connection portion between the third second-direction bobbin through the nth second-direction bobbin and the 3B connection portion through the nB connection portion are not connected when the coil is wound on the bobbin. When the coil is wound on the bobbin, the first connection portion, the second connection portion, the 3A connection portion through the nA connection portion, and the 3B connection portion through the nB connection portion do not exist. The second stator of the present disclosure can achieve the same effect as the first stator even when divided into n parts. That is, even if the first connecting part, the second connecting part, the 3A connecting part through the nAth connecting part, and the 3B connecting part through the nBth connecting part are disconnected so that the first connecting part, the second connecting part, the 3A connecting part through the nAth connecting part, and the 3B connecting part through the nBth connecting part do not exist when the coil is wound on the bobbin, the risk of damaging the coil when disconnecting them can be reduced.

[0013] Another aspect of the present disclosure is a rotating electric machine including the above-described stator and a rotor having a plurality of permanent magnets arranged in a circumferential direction and rotating together with a shaft. In this rotating electric machine, the rotor is arranged on the outer periphery of the stator so that the inner periphery of the permanent magnets faces the outer periphery of the teeth.

[0014] Another aspect of the present disclosure is a method for manufacturing a rotating electric machine that includes a ring-shaped base portion having a predetermined width in the axial direction, multiple teeth portions that protrude radially from the base portion and are formed circumferentially spaced apart, each having a predetermined width in the axial direction, a bobbin that covers the circumferential and axial outer periphery of the teeth portions, and a coil that is wound around the outer periphery of the bobbin.

[0015] In a rotating electric machine according to yet another manufacturing method of the present disclosure, the base portion is divided into two halves in the axial direction, a first base portion and a second base portion, which are stacked in the axial direction such that the first base portion is located on a first axial direction side and the second base portion is located on a second axial direction side. The teeth are divided into two halves in the circumferential direction, with first teeth portions formed to protrude radially from the first base portion and second teeth portions formed to protrude radially from the second base portion, and are spaced apart in the circumferential direction. The bobbins are divided into two halves in both the circumferential direction and the axial direction, with a first-direction first bobbin and a second-direction first bobbin located on the first axial direction side and the second axial direction side of the first teeth portions, respectively.

[0016] Furthermore, a ring-shaped first reel wall portion is disposed on the inner periphery of the first-direction first bobbin, which is located in the first direction of the first base portion and connects adjacent first bobbins in the circumferential direction. A ring-shaped first connection portion is disposed on the inner periphery of the second-direction first bobbin, which connects adjacent first bobbins in the circumferential direction, and this first connection portion is connected to the first bobbin via a first connection portion further inward from the innermost periphery of the coil.

[0017] Furthermore, a ring-shaped second reel wall portion is disposed on the inner periphery side of the second-direction second bobbin, the ring-shaped second reel wall portion being located in the second direction of the second base portion and connecting the second bobbins adjacent in the circumferential direction. Further, a ring-shaped second connection portion is disposed on the inner periphery side of the first-direction second bobbin, connecting the second bobbins adjacent in the circumferential direction, and the second connection portion is connected to the second bobbin via a second connection portion further inward from the innermost periphery end of the coil.

[0018] In yet another method of manufacturing a stator for a rotating electric machine disclosed herein, a first base portion and a second base portion are stacked to form the base portion and the teeth portion. Next, a first reel wall portion, a first-direction first bobbin, a second connection portion, and a first-direction second bobbin are arranged in the first direction of the base portion and the teeth portion, and a second reel wall portion, a second-direction second bobbin, the first connection portion, and a second-direction first bobbin are arranged in the second direction of the base portion and the teeth portion. Next, a coil is wound around the outer periphery of the bobbin. Next, the first connection portion is disconnected and the first connection portion is separated from the bobbin, and the second connection portion is disconnected and the second connection portion is separated from the bobbin.

[0019] In a stator according to yet another manufacturing method of the present disclosure, the first connection portion is connected to the first bobbin via a first coupling portion further inward from the innermost end of the coil. The first coupling portion is disposed on the inner side of the first bobbin in the second direction. Similarly, the second connection portion is connected to the second bobbin via a second coupling portion further inward from the innermost end of the coil. The second coupling portion is also disposed on the inner side of the second bobbin in the first direction.

[0020] Therefore, in the still another manufacturing method of the present disclosure, even if, after winding the coil around the outer periphery of the bobbin, the first connecting portion is disconnected to separate the first connecting portion from the bobbin and the second connecting portion is disconnected to separate the second connecting portion from the bobbin, the risk of damaging the coil during the disconnection is reduced. The still another manufacturing method of the present disclosure can also be used as a method for manufacturing a stator divided into n parts, like the second stator of the present disclosure. [Brief explanation of the drawings]

[0021] [Figure 1] FIG. 1 is a cross-sectional view of a rotating electrical machine combined with a crankshaft and a cylinder block. [Figure 2] FIG. 2 is a perspective view showing a rotor, a stator, and a sensor assembly of a rotating electric machine. [Figure 3] FIG. 3 is a perspective view showing a stator and a sensor assembly of a rotating electrical machine. [Figure 4]FIG. 4 is a front view showing the steel plates that form the stator. [Figure 5] FIG. 5 is a perspective view of the steel plates that make up the stator in a combined state. [Figure 6] FIG. 6 is a perspective view of the first direction first bobbin and the first reel wall portion. [Figure 7] FIG. 7 is a perspective view of the second-direction first bobbin and the first connection portion. [Figure 8] FIG. 8 is a perspective view of the first base portion, the first teeth portion, the first bobbin, the first reel wall portion, and the first connection portion. [Figure 9] FIG. 9 is a front view of FIG. [Figure 10] FIG. 10 is a cross-sectional view taken along line XX in FIG. [Figure 11] FIG. 11 is a perspective view showing a state in which the first connection portion is removed from FIG. [Figure 12] FIG. 12 is a perspective view of the second base portion, the second teeth portion, the second bobbin, and the second reel wall portion. [Figure 13] FIG. 13 is a perspective view showing a third base portion, teeth portions, a third A connecting portion, and a third B connecting portion in an example in which the stator is divided into three parts. [Figure 14] FIG. 14 is a perspective view showing a state in which the third A connecting portion and the third B connecting portion are removed from FIG. [Figure 15] FIG. 15 is a perspective view showing a first base plate portion, a second base plate portion, a third base plate portion, and teeth portions of an example in which a stator is divided into three portions. DETAILED DESCRIPTION OF THE INVENTION

[0022] An example of the present disclosure will be described below with reference to the drawings. First, an example of a rotating electric machine to which the present disclosure is applied will be described. FIG. 1 is a cross-sectional view of a rotating electric machine 1 combined with a crankshaft 100 of an engine 110. Pistons (not shown) reciprocate within cylinders (not shown) in a cylinder block 101 of the engine 110. The movement of the pistons rotates the crankshaft 100 via connecting rods (not shown). The crankshaft 100 is made of an iron material with a diameter of approximately 20 millimeters, and is rotatably supported by bearings 102 in the cylinder block 101.

[0023] A rotor 300 of the rotating electric machine 1 is fixed to the crankshaft 100 by a rotor base portion 301. Therefore, the rotor 300 rotates integrally with the crankshaft 100. The rotor 300 is made of iron and includes a disk portion 302 extending radially outward from the rotor base portion 301 that engages with the crankshaft 100, and a cylindrical portion 303 formed radially outward of the disk portion 302. As shown in FIGS. 1 and 2, twelve permanent magnets 304 are arranged circumferentially inside the cylindrical portion 303. The thickness of the permanent magnets 304 is approximately 4 to 6 millimeters. The number of permanent magnets 304 is not limited to 12, but can be set to 10, 24, or any other number appropriate to provide the number of poles and magnetic flux required for performance.

[0024] As shown in FIGS. 1 and 2, a stator 400 is disposed inside the rotor 300. Therefore, in this embodiment, the rotor 300 is a so-called outer rotor type, in which the rotor 300 is disposed on the outer periphery of the stator 400. When applied to a so-called inner rotor type rotating electric machine 1, the rotor 300 is disposed on the inner periphery of the stator 400, not on the outer periphery. FIG. 2 is a perspective view of the stator 400 as seen from the cylinder block 101 side. The stator 400 has a stator core 450 (shown in FIG. 5) formed by stacking multiple cores 430 (shown in FIG. 4) made of magnetic steel plates in the axial direction. The axial direction coincides with the axial direction of the crankshaft 100, and in FIG. 1, the left-right direction is the axial direction. In the following description, one side in the axial direction, for example, the right side in FIG. 1, is referred to as a first direction, and the opposite side is referred to as a second direction.

[0025] Stator core 450 integrally comprises an annular base portion 401 attached to cylinder block 101 and a plurality of teeth 402 (shown in FIG. 1) extending radially outward from base portion 401. The radial direction is a direction perpendicular to the axial direction, with the central axis of crankshaft 100 as the axial direction. The direction perpendicular to the axial and radial directions is the circumferential direction, and the plurality of teeth 402 are arranged in the circumferential direction.

[0026] In this embodiment, the outer diameter of the stator 400 is about 90 to 130 mm, and the inner diameter of the rotor 300 is sized so that a minute gap of 1 mm or less is formed between the outer diameter of the stator 400 and the permanent magnet 304.

[0027] The base portion 401 has three stator bolt holes 403 formed therein for fixing the stator 400 to the cylinder block 101. The base portion 401 also has sensor case fixing holes 406 formed therein for fixing the sensor case 440 to the stator 400.

[0028] The surfaces of the teeth 402 are electrically insulated by bobbins 410 made of insulating resin such as polyamide, and coils 404 made of wires such as copper wires or aluminum wires are wound around the bobbins 410. Thus, the stator 400 includes a stator core 450, a bobbin 410 that insulates the stator core 450, and the coils 404 wound around the bobbin 410. Figure 3 is a perspective view showing the stator 400 and the sensor assembly 445 with the rotor 300 removed from Figure 2.

[0029] 3, gaps 405 are formed between circumferentially adjacent coils 404, and these gaps 405 become wider radially outward. A sensor case 440 is disposed in this gap 405. The sensor case 440 is molded from a resin such as polyamide, similar to the bobbin 410 described above. A first magnetic detection sensor 441, a second magnetic detection sensor 442, a third magnetic detection sensor 443, and a fourth magnetic detection sensor 444 are disposed within the sensor case 440. The sensor case 440 and the first to fourth magnetic detection sensors 441 to 444 disposed therein form a sensor assembly 445.

[0030] The rotating electric machine 1 is composed of the above elements. When the rotating electric machine 1 is used as a generator, the rotor 300 rotates in synchronization with the rotation of the crankshaft 100 of the engine 110. As the rotor 300 rotates, it receives alternating magnetic flux from the permanent magnet 304 and generates an electromotive force in the coil 404 of the stator 400. This electromotive force is converted into three-phase AC, which is then rectified to DC and charged into a battery (not shown). Conversely, when the rotating electric machine 1 is used as a starter for the engine 110, current from a battery (not shown) is converted into three-phase AC to generate a magnetic force in the coil 404. The attraction and repulsion between the magnetic force generated in the coil 404 and the magnetic force of the permanent magnet 304 rotates the rotor 300. The rotation of the rotor 300 also rotates the crankshaft 100, starting the engine 110. Second to fourth magnetic detection sensors 442, 443, and 444 are used to control rotation during power generation and startup. The first magnetic detection sensor 441 is used to detect the reference position of the engine 110.

[0031] Next, the assembly process of the stator 400 will be described. First, a core 430 made of a magnetic steel plate and including a base portion 401 and teeth portions 402 as shown in FIG. 4 is punched out. In this example, the stator core 450 is divided into two parts. Therefore, a plurality of cores 430 shown in FIG. 4 are stacked, and a plurality of tooth cores 431 corresponding to the teeth portions 402 are also stacked to manufacture the stator core 450 as shown in FIG. 5. This stacking gives the base portion 401 a predetermined width in the axial direction, and the teeth portions 402 also have a predetermined width in the axial direction. The axial width of the teeth portions 402 is set longer than the axial width of the base portion 401.

[0032] The stator 400 is divided into two parts, one of which is referred to as the first stator and the other as the second stator. Each part has a first base portion, a second base portion, a first teeth portion, and a second teeth portion. However, since the first stator and the second stator have substantially the same shape, the first stator 400 will be denoted by the symbol stator 400 in the following description. The structure and assembly of the stator 400 will be described for the first stator 400. Therefore, unless there is a particular need to distinguish between them, the description of the first stator 400 will be the description of the stator 400. When it is necessary to distinguish between the first stator 400 and the second stator, the part relating to the second stator will be preceded by the symbol 2. Specifically, the two-part structure of stator 400 is as follows. First, base portion 401 is divided into two in the axial direction, that is, first base portion 401 and second base portion 2401, which are stacked in the axial direction such that first base portion 401 is arranged on the first axial direction side and second base portion 2401 is arranged on the second axial direction side. In other words, the axial thickness of first base portion 401 and second base portion 2401 is half that of base portion 401, and the first base portion 401 and second base portion 2401 are stacked in the axial direction to form the thickness of base portion 401. Furthermore, the teeth portion 402 is divided into two portions in the circumferential direction, with the first teeth portion 402 formed to protrude radially outward from the first base portion 401 and the second teeth portion 2402 formed to protrude radially from the second base portion 2401 being spaced apart in the circumferential direction. As a result, the first teeth portion 402 and the second teeth portion 2402 are alternately arranged in the circumferential direction. The first base portion 401 and the first teeth portion 402 form the first stator 400, and the second base portion 2401 and the second teeth portion 2402 form the second stator 2400.

[0033] The base portion 401 of the core 430 has a protruding engagement portion 432 that fits with the adjacent core 430 when stacked. That is, the engagement portion 432 protrudes on one side and is recessed on the other side. This allows the protruding engagement portion 432 to fit with the recessed engagement portion 432 of the adjacent core 430. The core 430 also has a tooth engagement portion 433 formed on the tooth portion 402.

[0034] Teeth engagement portions 433 are also formed to protrude from teeth core 431 at the same positions. Like engagement portions 432 described above, teeth engagement portions 433 are also formed to protrude on one side and recessed on the other side. This mechanically fixes the teeth engagement portions formed on teeth portion 402 of core 430 to the teeth engagement portions 433 formed on teeth core 431, as well as adjacent teeth cores 431. However, in addition to or instead of mechanical fixation, core 430 and teeth core 431 may be fixed with an adhesive. The description of core 430 and teeth core 431 is the same for both first stator 400 and second stator 2400.

[0035] Next, a bobbin assembly process is performed in which the bobbin 410 is assembled to the stator core 450. First, the first bobbin 410 to be assembled to the first stator 400 will be described. As will be described later, the second bobbin 2410 to be assembled to the second stator 2400 is identical to the first bobbin 410, except that the first and second directions are reversed. Therefore, descriptions common to the first and second bobbins 410 and 2410 will be described as the bobbin 410. Therefore, common content regarding the first stator 400 will also be described as the stator 400. The bobbin 410 is divided so as to sandwich the teeth portion 402 from both sides in the axial direction (the first direction side and the second direction side). FIG. 6 shows a first-direction bobbin 412 arranged in the first axial direction, and FIG. 7 shows a second-direction bobbin 414 arranged in the second axial direction. The first-directional bobbin 412 and the second-directional bobbin 414 have the same shape. Each has an integrally formed cover portion 413 and an outer peripheral flange portion 411. When it is necessary to distinguish between the first-directional bobbin 412 and the second-directional bobbin 414, the cover portion 413 and the outer peripheral flange 411 of the first-directional bobbin 412 are labeled with the letter A, and the cover portion 413 and the outer peripheral flange 411 of the second-directional bobbin 414 are labeled with the letter B.

[0036] The cover portion 413 extends in the radial direction corresponding to the tooth portion 402. The cover portion 413 has a U-shaped cross section, with the first direction cover portion 413A arranged in the first direction of the tooth portion 402 and the second direction cover portion 413B arranged in the second direction of the tooth portion 402. Therefore, the U-shape of the first direction cover portion 413A and the U-shape of the second direction cover portion 413B are inverted. Furthermore, the second direction end face of the first direction cover portion 413A is shaped to abut against the first direction end face of the second direction cover portion 413B. Note that the axial surface of the cover portion 413 has an uneven portion 415 formed thereon to guide the wire of the coil 404. The outer peripheral flange portions 411 are located radially outward of the cover portions 413, and are formed on each cover portion 413. The inner surface of the outer peripheral flange portions 411 is open, and the radial outer peripheral surfaces of the teeth portions 402 are exposed from the bobbin 410. In other words, the outer peripheries of the teeth portions 402 are not obstructed by the bobbin 410 and correspond to the permanent magnets 304. Similar to the cover portions 413, the outer peripheral flange portions 411 are also shaped so that the second-direction end face of the first-direction outer peripheral flange portion 411A comes into contact with the first-direction end face of the second-direction outer peripheral flange portion 411B.

[0037] As shown in FIG. 6 , a ring-shaped reel wall 420 is disposed on the inner periphery of the first-directional bobbin 412. This reel wall 420 holds the cover 413 circumferentially on the radially inner side. Therefore, the cover 413 is disposed at equal intervals in the circumferential direction on the outer periphery of the reel wall 420. The reel wall 420 and the first-directional bobbin 412 are integrally molded from an insulating resin such as polyamide. The reel wall 420 also functions to guide the wire (crossover wire) connecting the coils 404 of the same phase. More specifically, the crossover wire is routed circumferentially along the reel wall 420, which extends circumferentially. The guide function of the reel wall 420 prevents the crossover wire from entering the inner diameter side (base portion 401 side) of the reel wall 420. As described above, the first and second directions are reversed between the first bobbin 410 and the second bobbin 2410. Therefore, for the first bobbin 410, the downward direction in FIG. 6 is the first direction, and the first reel wall portion 420 is disposed on the inner periphery of the first-direction first bobbin 412. On the other hand, for the second bobbin 2410, the direction is reversed, and the second direction is the downward direction in FIG. 6. The second direction is reversed, and the second reel wall portion 2420 is disposed on the inner periphery of the second-direction second bobbin 2414.

[0038] As shown in Fig. 7, a ring-shaped connecting portion 421 is disposed on the inner periphery of the second direction bobbin 414. Like the above-described reel wall portion 420, the connecting portion 421 is disposed radially inward of the second direction bobbin 414. The connecting portion 421 is formed thinner in both the axial and radial directions than the reel wall portion 420. A linking portion 422 is disposed on the outer periphery of the connecting portion 421, linking the connecting portion 421 and the inner periphery of the cover portion 413. The linking portion 422 is formed even thinner than the connecting portion 421. The cover portion 413, the linking portion 422, and the connecting portion 421 are integrally molded from insulating resin such as polyamide. As described above, the first bobbin 410 and the second bobbin 2410 are reversed in the first direction and the second direction. Therefore, for the second-direction first bobbin 414, the upper side in FIG. 7 corresponds to the second direction for the coupling portion 422 and the connecting portion 421. The first connecting portion 421 is disposed on the inner periphery of the second-direction first bobbin 414, and the first connecting portion 421 is connected to the first bobbin 410 by the first connecting portion 422. On the other hand, for the second bobbin 2410, the first direction corresponds to the upward direction in FIG. 7. The upward direction in FIG. 7 corresponds to the first direction, and the second connecting portion 2421 is disposed on the inner periphery of the first-direction second bobbin 2412. The second connecting portion 2421 is connected to the second bobbin 2410 by the second connecting portion 2422 so as to connect the adjacent second bobbins 2410.

[0039] As shown in Fig. 8, the teeth portion 402 is sandwiched between the first direction bobbin 412 and the second direction bobbin 414 from both axial sides (the first direction side and the second direction side). Fig. 8 shows a state in which the first direction bobbin 412 and the second direction bobbin 414 are arranged on the teeth portion 402 of a stator core 450 in which a core 430 and a teeth core 431 are laminated. Fig. 8 also shows a state in which the coil 404 is wound around the outer periphery of the first direction bobbin 412 and the second direction bobbin 414. 8, the first bobbin 410 and the second bobbin 2410 are also upside down. First, for the first bobbin 410, the lower side in FIG. 8 is the first direction, and the upper side is the second direction. The first reel wall 420 is disposed in the first direction (lower side) of the first-direction first bobbin 412, and the first connecting portion 421 and the first linking portion 422 are disposed in the second direction (upper side) of the second-direction first bobbin 414. Next, for the second bobbin 2410, the lower side in FIG. 8 is the second direction, and the upper side is the first direction. The second reel wall 2420 is disposed in the second direction (lower side) of the second-direction second bobbin 2414, and the second connecting portion 2421 and the second linking portion 2422 are disposed in the first direction (upper side) of the first-direction second bobbin 2412.

[0040] After the bobbin assembly process described above, the coil winding process is performed. The state after the coil winding process is shown in FIG. 8. In actual arrangement, the reel wall portion 420 (second reel wall portion 2420) of both the first bobbin 410 and the second bobbin 2410 is arranged in the upper (top) direction, and the connection portion 421 (second connection portion 2421) is arranged in the lower (bottom) direction. There are two reasons for this. First, it is to improve the fit between the jig that holds the stator 400 (second stator 2400) in the winding machine and the stator 400. In order to set the jig so that it fits inside the stator 400, arranging it in the opposite direction to that shown in FIG. 8 concentrates the mass of the jig and improves stability. This contributes to a good winding finish. The other reason is that when the winding method is the flyer method, the crossover wire is formed in the upper (top) direction. When the reel wall portion 420 is arranged facing upward, it becomes easy to pull out the crossover wire from the reel wall portion 420. In the coil winding process, the wire begins to be wound on the inner periphery side of the first direction bobbin 412, near the reel wall 420. The wire is wound from the inner periphery side to the radially outer periphery side of the first direction bobbin 412 and the second direction bobbin 414, utilizing the uneven portion 415. Next, the wire is folded back on the inner periphery of the outer flange portion 411, and wound toward the inner periphery side. The winding ends on the first direction bobbin side, allowing the crossover wire to run along the reel wall 420. Considering the coil winding process, connecting portion 421 is disposed radially outside stator bolt through-hole 403 formed in base portion 401. This is because, in the coil winding process, stator bolt through-hole 403 is used for positioning by a winding machine, and a pin provided on a production jig is inserted into stator bolt through-hole 403. To prevent interference between the jig and connecting portion 421, it is necessary to dispose connecting portion 421 at a position radially outside stator bolt through-hole 403.

[0041] As shown in FIG. 9, which is a plan view of FIG. 8, a space 4050 in which a second bobbin 2410 is disposed is formed between adjacent first bobbins 410 in the circumferential direction. When FIG. 9 shows the second bobbin 2410, the first bobbin 410 is disposed in the space 4050. As shown in FIG. 10, which is a cross section taken along line XX in FIG. 9, the reel wall portion 420 is integrally formed on the inner periphery of the first-direction bobbin 412. Note that the first direction is the downward direction in FIG. 10, and the second direction is the upward direction. The inner periphery of the second-direction bobbin 414 and the outer periphery of the connection portion 421 are bridged by a connecting portion 422. The up-down direction of the first bobbin 410 and the second bobbin 2410 is reversed in FIG. 10 as well. To reiterate, the first-direction first bobbin 412 is disposed at the bottom of FIG. 10, and the first reel wall portion 420 is also disposed at the bottom of FIG. 10. The second-direction first bobbin 414, the first connecting portion 421, and the first linking portion 422 are arranged in the upper part of Fig. 10. On the other hand, the second-direction second bobbin 2414 is arranged in the lower part of Fig. 10. Therefore, the second reel wall portion 2420 is also arranged in the lower part of Fig. 10, and the first-direction second bobbin 2412, the second connecting portion 2421, and the second linking portion 422 are arranged in the upper part of Fig. 10.

[0042] The axial length of the connecting portion 422 is shorter than the axial width of the second direction bobbin 414 and shorter than the axial width of the connecting portion 421. Furthermore, the axial length of the connecting portion 422 is shorter on the second direction bobbin 414 side than on the connecting portion 421 side. This is to facilitate the connecting portion detachment process that is performed after the coil winding process. On the other hand, the second direction bobbin 414 and the connecting portion 421 are bridged by two connecting portions 422 so that the connecting portion 422 has a predetermined strength. The two connecting portions 422 are arranged at the same position in the axial direction and spaced apart in the circumferential direction.

[0043] The connection portion severing process is a process of cutting the linking portion 422 on its outer circumferential side, i.e., on the side of the second direction bobbin 414. Because the linking portion 422 is cut on the side of the second direction bobbin 414, neither the linking portion 422 nor the connecting portion 421 generally remains after cutting. Even if traces of the linking portion 422 remain, they are small. The connection portion severing process is performed after the coil winding process. This is because removing the connecting portion 421 before winding the coil 404 would make the bobbin 410 unstable. As described above, the stator 400 is sandwiched between the first direction bobbin 412 and the second direction bobbin 414. Therefore, either the first connecting portion 421 of the first bobbin 410 or the second connecting portion 2421 of the second bobbin 410 is positioned downward and may fall due to gravity. In contrast, because the connection portion detachment process is performed after the coil winding process, in the coil winding process, the second direction bobbins 414 are connected by the connection portions 421, and the second direction bobbins 414 are securely held by the connection portions 421. This prevents the second direction bobbins 414 from shifting or falling off the teeth portions 402 during the coil winding process.

[0044] On the other hand, because the connection portion disconnection process is performed after the coil winding process, there is a risk of damaging the coil 404 during the connection portion disconnection process. However, in this example, the connection portion 421 is connected to the second direction bobbin 414 via the connecting portion 422, further inward from the innermost end of the coil 404. Therefore, the position of the connecting portion 422 is further inward from the innermost end of the coil 404. Because the cutting position of the connecting portion 422 is further inward from the coil 404, adverse effects on the coil 404 when cutting the connecting portion 422 are reduced. The adverse effects on the coil 404 include the risk of damaging or peeling off the coating of the wires or crossover wires of the coil 404. Note that, as shown in FIG. 10 , the relationship between the connecting portion 422 and the tooth portion 402 is such that the connecting portion 422 is located near the radially inner end of the tooth portion 402 and slightly outward from the innermost end. 10, the connecting portion 422 is disposed on the end face of the tooth portion 402 in the axial direction. Therefore, the connection portion severing process is performed radially inward from the second direction bobbin 414 and axially outward from the tooth portion 402. Cutting the connecting portion 422 at this position is a feature of the present disclosure. To reiterate, if the connecting portion 421 is located near the coil 404, as in Patent Document 2, there is a risk that cutting the connecting portion 422 will have an adverse effect on the coil 404. In contrast, in the present disclosure, the connecting portion 422 is cut at the above-mentioned position, thereby reducing the adverse effect on the coil 404.

[0045] FIG. 11 shows the first stator 400 after the connection portion separation process has been completed. As described above, the first stator 400 is described using the same reference numerals as the stator 400. The first stator 400 includes a first base portion 403, a first teeth portion 402, a first bobbin 410, and a first reel wall portion 420. However, for clarity, the first-direction bobbin 412 and the second-direction bobbin 414 will be described in FIG. 11 using the name of the first stator 400. In FIG. 11, the downward direction is the first direction, and the upward direction is the second direction. Therefore, the first base portion 401 of the first stator 400 is disposed in the first direction (downward). The first-direction first bobbin 412 sandwiches the first tee portion 402 from the first direction (downward), and the second-direction first bobbin 414 sandwiches the first tee portion 402 from the second direction (upward). A first reel wall portion 420 is disposed on the inner circumferential side of the first-direction first bobbin 412, and the first reel wall portion 420 is located in the first direction (downward) of the first base portion 401. Before the connection portion cutting step, the first connection portion 421 was located on the inner circumferential side of the second-direction first bobbin 414, but because the first knot portion 422 was cut in the connection portion cutting step, neither the first connection portion 421 nor the first linking portion 422 is shown in FIG.

[0046] FIG. 12 shows the second stator 2400. The orientations of the first and second directions in FIG. 12 are the same as those in FIG. 11. That is, the first direction is the downward direction, and the second direction is the upward direction. Therefore, while the first spool wall portion 420 in the first stator 400 is disposed in the first axial direction (the downward direction in FIG. 11), the second stator 2400 is disposed in the second axial direction (the upward direction in FIG. 12). Except for the position of the second spool wall portion 2420, the second stator 2400 is identical to the first stator 400. That is, the second teeth 2402 are formed to protrude radially outward from the second base portion 2401. The multiple second teeth 2402 are disposed circumferentially spaced apart, and a space 4050 is formed between adjacent second teeth 2402 in which the first teeth 402 are disposed. Second bobbins 2410 are arranged on both axial sides of the second teeth 2402. That is, the first-direction second bobbin 2412 is arranged in the first direction (downward), and the second-direction second bobbin 2414 is arranged in the second direction (upward), sandwiching the second teeth 2402. The second reel wall 2420 is located on the inner periphery of the second-direction second bobbin 2414 and connects the second bobbins 2410 together. Then, the coil 404 is wound around the outer periphery of the second bobbin 2410. In a connection portion separation process following the coil winding process, the second connection portion 2421 formed on the first-direction second bobbin 2412 is removed.

[0047] As shown in FIG. 11 , a first relief portion 423 is formed on the first reel wall portion 420 located in the first direction (downward direction) of the first bobbin 410. In the connection portion separation process described above, the second connecting portion 2422 formed on the first-direction second bobbin 2412 of the second bobbin 2410 is cut. As described above, the cut portion is located on the first-direction second bobbin 2412 side of the second connecting portion, and the trace left after cutting is small. However, the second connecting portion 2422 is not completely removed by cutting, and a trace may remain. If a trace remains, the trace will protrude radially inward from the first-direction second bobbin 2412. Therefore, if traces of the second connecting portion 2422 remain, there is a risk that the traces of the second connecting portion 2422 will interfere with the first reel wall portion 420 and hinder the assembly when the first stator 400 and the second stator 2400 are assembled. In this example, the first relief portion 423 is formed, which effectively prevents the traces of the second connecting portion 2422 of the second stator 2400 (first-direction second bobbin 2412) left after cutting from interfering with the first reel wall portion 420. Therefore, the first relief portion 423 is a recess formed in a position facing the second connecting portion 2422.

[0048] 12, the second reel wall portion 2420 of the second stator 2400 (second direction second bobbin 2414) also has a second relief portion 2423 formed therein, similar to the first relief portion 423. The second relief portion 2423 prevents the trace of the first connecting portion 422 from interfering with the second reel wall portion 2420.

[0049] The stator assembly process involves combining the first stator 400 and the second stator 2400. The stator assembly process may be mechanical assembly using rivets or the like, chemical assembly using adhesives, or a combination of both. The manufacturing process for the stator 400 involves cutting and removing excess wires. Next, the insulating coating on the wires that will become the ends of the coil 404 is stripped. The wires that will become the ends of the coil 404 are then joined to terminals (not shown) for electrical connection. If copper wires are used as the wires, the electrical connection is performed by soldering. If aluminum wires are used, the electrical connection is performed by welding. After the electrical connection, a protective case (not shown) is prepared so that the protective case covers the joints between the terminals and the wires. Then, a potting material is filled into the protective case. After the potting material hardens, the sensor assembly 445 is attached, completing the assembly process for the stator 400. The assembled state of the stator 400 is shown in FIG. 3. The rotating electric machine 1 has the rotor 300 disposed on the outer periphery of the stator 400, as shown in FIG. Next, another embodiment of the present disclosure will be described. In the above-described embodiment, the stator 400 is divided into two parts, the first stator 400 and the second stator 2400. In another embodiment, as shown in FIG. 15 , the stator 400 is divided into three parts, and includes a third stator 3400 in addition to the first stator 400 and the second stator 2400. The first base portion 401 of the first stator 400 is disposed in the first direction, and the second base portion 2401 of the second stator 2400 is disposed in the second direction, as in the above-described embodiment. In the third stator 3400, the third base portion 3401 is disposed midway between the first direction and the second direction, as shown in FIG. 13 . That is, when viewed from the first direction, the first base portion 401, the third base portion 3401, and the second base portion 2401 are disposed in this order. In other words, the third stator 3400 is sandwiched between the first stator 400 and the second stator 2400 . Third teeth 3402 are formed to protrude radially outward from third base portion 3401. Spaces 4051 are formed between adjacent third teeth 3402. Spaces 4050 shown in FIG. 11 are spaces in which second teeth 2402 are arranged, and similarly, spaces 4050 shown in FIG. 12 are spaces in which first teeth 402 are arranged. In contrast, spaces 4051 between third teeth 3402 shown in FIG. 13 are wider because the first teeth 402 and second teeth 2402 are arranged between them. The third teeth 3402 are covered by third bobbins 3410. Specifically, the third teeth 3402 are sandwiched between a first-direction third bobbin 3412 arranged in the first direction of the third teeth 3402 and a second-direction third bobbin 3414 arranged in the second direction of the third teeth 3402. Note that in Fig. 13 as well, the first direction is defined as the downward direction and the second direction is defined as the upward direction, consistent with Figs. 11 and 12. While the first bobbin 410 has a first reel frame wall portion 420 in the first direction and the second bobbin 2410 has a second reel frame wall portion 2420 in the second direction, the intermediate third bobbin does not form a reel frame wall portion. Instead, a ring-shaped third-A connection portion 3421A is disposed on the inner periphery of the first-direction third bobbin 3412, connecting adjacent first-direction third bobbins 3412 in the circumferential direction. This third-A connection portion 3421A is further inward from the innermost end of the coil 404 and is connected to the first-direction third bobbin 3412 via a third-A connection portion. Similarly, a ring-shaped third-B connection portion 3421B is disposed on the inner periphery of the second-direction third bobbin 3414, connecting adjacent second-direction third bobbins 3414 in the circumferential direction. This third-B connecting portion 3421B is connected to the second-direction third bobbin 3414 via a third-B linking portion 3422B on the innermost side of the innermost circumferential end of the coil 404. Although the third-A linking portion is not shown in Fig. 13, it has the same structure as the third-B linking portion 3422B. That is, two third linking portions 3422 spaced apart in the circumferential direction bridge the third connecting portion 3421 and the third bobbin 3414, and have the same structure as the linking portion 422 having the two-part structure described above. In the stator assembly process, the first stator 400 and the second stator 2400 are subjected to the same processes as in the two-division example described above up to the connection portion separation process. In the connection portion separation process, the third stator 3400 is separated from both the 3A connecting portion and the 3B connecting portion 3422B. By separating the 3A connecting portion and the 3B connecting portion 3422B, the 3A connecting portion 3421A and the 3B connecting portion 4321B are removed from the third bobbin 3410. FIG. 14 shows the third bobbin 3410 from which the 3A connecting portion 3421A and the 3B connecting portion 4321B have been removed. In the two-division example described above, the first relief portion 423 formed in the first reel wall portion 420 was formed as a recess to allow the trace of the second connecting portion 2422 of the second stator 2400 to escape. In the case of three divisions, the first relief portion 423 is formed with a recess so as to allow for the escape of not only the second connecting portion 2422 of the second stator 2400 but also the trace of the third connecting portion 3422 of the third stator 3400. This is similar to the second reel wall portion 2420. The second relief portion 2423 is formed so as to allow for the escape of the traces of the first connecting portion 422 of the first stator 400 and the third connecting portion 3422 of the third stator 3400. The stator assembly process after the connection portion disconnection process is shown in FIG. 15. In FIG. 15, the first direction is the downward direction and the second direction is the upward direction. The first stator 400 is arranged in the first direction (downward direction) of the third stator 3400, and the second stator 2400 is arranged in the second direction (upward direction) of the third stator 3400. From the state shown in FIG. 15, the first stator 400 is displaced in the second direction (upward direction), and the second stator 2400 is displaced in the first direction (downward direction). The stator assembly process is performed so that the first base plate portion 401 and the second base plate portion 2401 contact the third base plate portion 3401. The subsequent cutting of the wires, electrical connection, and assembly of the sensor assembly 445 are the same as in the two-division example described above. 13 to 15 show an example in which the stator 400 is divided into three, but the stator 400 can also be divided into n parts, where n is a natural number greater than or equal to 3. The first stator 400 in the first direction and the second stator 2400 in the second direction are always disposed in the same position even when divided into n parts. The first stator 400 has a first reel wall portion 420 and a first connecting portion 421, and the second stator 2400 has a second reel wall portion 2420 and a second connecting portion 2421. When n is 3, the configuration is the same as the examples in FIGS. 13 to 15. When n is 4, the third base portion 3401 of the third stator 3400 and the fourth base portion of the fourth stator 2400 are disposed axially between the first base portion 401 of the first stator 400 and the second base portion 2401 of the second stator 2400. Similar to the third stator 3400 described above, the fourth stator also has fourth teeth that protrude radially. A first-direction fourth bobbin is disposed in the first direction of the fourth teeth, and a second-direction fourth bobbin is disposed in the second direction. A fourth A connecting portion is disposed on the inner periphery of the first-direction fourth bobbin, and the first-direction fourth bobbin and the fourth A connecting portion are connected to each other via the fourth A connecting portion. Similarly, a fourth B connecting portion is disposed on the inner periphery of the second-direction fourth bobbin, and the fourth B connecting portion is connected to each other via the fourth B connecting portion. In the connection portion cutting step, the 4A connecting portion and the 4B connecting portion are cut and removed. To be clear, using n to represent the nth stator, the nth stator has an nth base portion located in the middle in the axial direction. An nth tooth portion is formed to protrude radially outward from the nth base portion, and the nth tooth portion is sandwiched between the first-direction nth bobbin and the second-direction nth bobbin. The nth stator has an nthA connection portion disposed on the inner periphery of the first-direction nth bobbin, and is connected by the nthA linking portion. Also, an nthB connection portion disposed on the inner periphery of the second-direction nth bobbin, and is connected by the nthB linking portion. Then, in the connection portion separation process, the nthA linking portion and the nthB linking portion are cut and removed.

[0050] In the above example, the first bobbin 410 and the second bobbin 2410 have the same shape. This is a desirable example because it allows for the use of common components. However, it is possible to make the shapes of the first bobbin 410 and the second bobbin 2410 different, if necessary. In that case, the shapes of the cover portion 413 and the outer peripheral flange portion 411 may also differ between the first bobbin 410 and the second bobbin 2410. Similarly, it is possible to make the shapes of the first direction bobbin 412 and the second direction bobbin 414 of the bobbin 410 different, if necessary.

[0051] In the above example, the linking portion 422 is linear, and bridges the connecting portion 421 and the second direction bobbin 414. The thickness of the linking portion 422 is made thinner toward the second direction bobbin 414. The linking portion is then cut at the thinnest position. This is a desirable form for cutting the linking portion 422. However, the connecting portion 421 can be cut off regardless of the position at which the linking portion is cut.

[0052] In the above example, the linking portion 422 (nAth linking portion, nBth linking portion) links the second-direction bobbin 414 (first-direction nth bobbin, second-direction nth bobbin) and the connecting portion 421 (nAth connecting portion, nBth connecting portion) at two locations, but the linking portion 422 may link the second-direction bobbin 414 (first-direction nth bobbin, second-direction nth bobbin) to one location or three or more locations. It is sufficient for the linking portion 422 to have sufficient strength to reliably hold the second-direction bobbin 414 (first-direction nth bobbin, second-direction nth bobbin) when mated with the tooth portion 402 (nth tooth portion) and to reliably hold the second-direction bobbin 414 (first-direction nth bobbin, second-direction nth bobbin) during the coil winding process. Furthermore, although it is desirable for the linking portion 422 (nAth linking portion, nBth linking portion) to have a linear shape, the shape of the linking portion 422 (nAth linking portion, nBth linking portion) is not limited to a linear shape. Other cross-sectional shapes are also possible. The shape of the linking portion 422 (nAth linking portion, nBth linking portion) can be changed in various ways, and it is also possible to directly link the connecting portion 421 (nAth linking portion, nBth linking portion) and the second-direction bobbin 414 (first-direction nth bobbin, second-direction nth bobbin). In that case, the connection point becomes the linking portion 422 (nAth linking portion, nBth linking portion).

[0053] In the above example, relief portions 423 are formed to allow traces of the connecting portions 422 (n-th A connecting portion, n-th B connecting portion). This is a desirable form for preventing interference between the first bobbin 410 and the second bobbin 2410 (n-th bobbin). However, these relief portions 423 can also be eliminated as needed. Depending on how the connecting portions 422 (n-th A connecting portion, n-th B connecting portion) are cut, no traces may remain. Also, in an example where a gap is formed between the first direction bobbin 412 and the second direction bobbin 414 (n-th bobbin), there will be no interference even if no special relief portions 423 are formed.

[0054] Furthermore, while the above is a preferred example of the present disclosure, the present disclosure can be modified in various ways. For example, the number of coils 404 is 18, but this number can be changed. Furthermore, the size described in the above example is also an example, and the material and size can be set appropriately depending on the performance required of the rotating electric machine 1.

[0055] (Disclosure of technical ideas) This specification discloses multiple technical ideas described in the following multiple clauses. Some clauses may be written in a multiple dependent form, with the subsequent clause referring to the preceding clause as an alternative. Furthermore, some clauses may be written in a multiple dependent form, referring to another multiple dependent clause. These multiple dependent clauses define multiple technical ideas.

[0056] (Technical thought 1) a ring-shaped base portion having a predetermined width in the axial direction; a plurality of teeth formed radially protruding from the base portion, spaced apart from each other in the circumferential direction, and each having a predetermined width in the axial direction; a bobbin that covers the circumferential and axial outer periphery of the teeth; a coil wound around the outer periphery of the bobbin, The base portion is divided into two in the axial direction, a first base portion and a second base portion, which are stacked in the axial direction such that the first base portion is disposed on a first axial direction side and the second base portion is disposed on a second axial direction side, The teeth are divided into two parts in the circumferential direction, and a first teeth portion formed to protrude radially from the first base portion and a second teeth portion formed to protrude radially from the second base portion are arranged apart in the circumferential direction, The bobbin is divided into two parts in the circumferential direction and in the axial direction, with a first direction first bobbin and a second direction first bobbin being arranged on the first direction side and the second direction side of the first teeth portion in the axial direction, and a first direction second bobbin and a second direction second bobbin being arranged on the first direction side and the second direction side of the second teeth portion in the axial direction, a ring-shaped first reel wall portion is disposed on the inner peripheral side of the first direction first bobbin, the ring-shaped first reel wall portion being located in the first direction of the first base portion and connecting the first direction first bobbins adjacent in the circumferential direction; a ring-shaped first connection portion that connects the second direction first bobbins adjacent in the circumferential direction is disposed on the inner peripheral side of the second direction first bobbins, and the first connection portion is connected to the second direction first bobbin via a first connection portion on the inner peripheral side further inward than the innermost peripheral end of the coil; a ring-shaped second reel wall portion is disposed on the inner peripheral side of the second-direction second bobbin, the second reel wall portion being located in the second direction of the second base portion and connecting the second-direction second bobbins adjacent in the circumferential direction; a ring-shaped second connection portion that connects the first-direction second bobbins adjacent in the circumferential direction is disposed on the inner peripheral side of the first-direction second bobbins, and the second connection portion is connected to the second-direction second bobbin via a second connection portion on the inner peripheral side further inward than the innermost peripheral end of the coil; The first connecting portion between the second-direction first bobbin and the first connecting portion and the second connecting portion between the first-direction second bobbin and the second connecting portion are not connected when the coil is wound on the bobbin, and the first connecting portion and the second connecting portion do not exist when the coil is wound on the bobbin. Stator of a rotating electrical machine.

[0057] (Technical thought 2) a ring-shaped base portion having a predetermined width in the axial direction; a plurality of teeth formed radially protruding from the base portion, spaced apart from each other in the circumferential direction, and each having a predetermined width in the axial direction; a bobbin that covers the circumferential and axial outer periphery of the teeth; a coil wound around the outer periphery of the bobbin, The base portion is divided into n portions in the axial direction, where n is a natural number of 3 or more, and the first base portion, the second base portion, and the third base portion through the n-th base portion are stacked and arranged in the axial direction such that the first base portion is arranged on a first axial direction side, the second base portion is arranged on a second axial direction side, and the third base portion through the n-th base portion are arranged midway between the first and second axial directions, The teeth are divided into n parts in the circumferential direction, and a first teeth part formed to protrude radially from the first base part, a second teeth part formed to protrude radially from the second base part, and third teeth parts through n-th teeth parts formed to protrude radially from the third base part through the n-th base part are arranged apart from each other in the circumferential direction, The bobbin is divided into n parts in the circumferential direction and into two parts in the axial direction, with the first direction first bobbin and the second direction first bobbin being arranged on the first direction side and the second direction side of the first teeth portion in the axial direction, the first direction second bobbin and the second direction second bobbin being arranged on the first direction side and the second direction side of the second teeth portion in the axial direction, and the first direction third bobbin through the first direction n-th bobbin and the second direction third bobbin through the second direction n-th bobbin being arranged on the first direction side and the second direction side of the third teeth portion through the n-th teeth portion in the axial direction, a ring-shaped first reel wall portion is disposed on the inner peripheral side of the first direction first bobbin, the ring-shaped first reel wall portion being located in the first direction of the first base portion and connecting the first direction first bobbins adjacent in the circumferential direction; a ring-shaped second connection portion that connects the first-direction second bobbins adjacent in the circumferential direction is disposed on the inner peripheral side of the first-direction second bobbins, and the second connection portion is connected to the first-direction second bobbin via a second connection portion on the inner peripheral side further inward than the innermost peripheral end of the coil; ring-shaped 3A-th connection portions through nA-th connection portions are arranged on the inner circumferential sides of the first-direction third bobbin through the first-direction n-th bobbin, connecting the first-direction third bobbins through the first-direction n-th bobbins adjacent in the circumferential direction, and the 3A-th connection portions through nA-th connection portions are connected to the first-direction third bobbins through the first-direction n-th bobbins on the inner circumferential sides further inward than the innermost circumferential end of the coil via 3A-th connection portions through nA-th connection portions; a ring-shaped first connection portion that connects the second direction first bobbins adjacent in the circumferential direction is disposed on the inner peripheral side of the second direction first bobbins, and the first connection portion is connected to the second direction first bobbin via a first connection portion on the inner peripheral side further inward than the innermost peripheral end of the coil; a ring-shaped second reel wall portion is disposed on the inner peripheral side of the second-direction second bobbin, the second reel wall portion being located in the second direction of the second base portion and connecting the second-direction second bobbins adjacent in the circumferential direction; ring-shaped 3B connection portions through nB connection portions that connect the circumferentially adjacent 3B bobbins through the nth second-direction bobbins are disposed on the inner peripheral sides of the 3B bobbins through the nth second-direction bobbins, and the 3B connection portions through nB connection portions are connected to the 3B bobbins through the nth second-direction bobbins on the inner peripheral side further inward than the innermost peripheral end of the coil via 3B connection portions through nB connection portions; The second connection portion between the first-direction second bobbin and the second connection portion, the 3A connection portion to the nA connection portion between the first-direction third bobbin to the first-direction nth bobbin and the 3A connection portion to the nA connection portion, the first connection portion between the second-direction first bobbin and the first connection portion, and the 3B connection portion to the nB connection portion between the second-direction third bobbin to the second-direction nth bobbin and the 3B connection portion to the nB connection portion are not connected when the coil is wound on the bobbin, and the first connection portion, the second connection portion, the 3A connection portion to the nA connection portion, and the 3B connection portion to the nB connection portion do not exist when the coil is wound on the bobbin. Stator of a rotating electrical machine. (Technical Thought 3) The first connecting portion has a structure that bridges the outer periphery of the first connecting portion and the inner periphery of the second direction first bobbin. A stator for a rotating electric machine according to Technical Idea 1 or Technical Idea 2.

[0058] (Technical Thought 4) The axial width of the first connecting portion is shorter than the axial width of the first connecting portion and the axial width of the second direction first bobbin. A stator for a rotating electric machine according to any one of Technical Ideas 1 to 3.

[0059] (Technical Thought 5) The axial width of the first coupling portion is smaller on the first bobbin side in the second direction than on the first connection portion side. A stator for a rotating electric machine according to any one of Technical Ideas 1 to 4.

[0060] (Technical Thought 6) The first connecting portion connects the first connection and the second direction first bobbin at two points spaced apart in the circumferential direction. A stator for a rotating electric machine according to any one of Technical Ideas 1 to 5.

[0061] (Technical Thought 7) A relief portion is formed in the second reel wall portion at a location corresponding to the first connecting portion, for allowing traces of the first connecting portion to escape. A stator for a rotating electric machine according to any one of Technical Ideas 1 to 6.

[0062] (Technical Thought 8) The first connecting portion and the first coupling portion of the second-direction first bobbin and the second connecting portion and the second coupling portion of the first-direction second bobbin have the same shape. A stator for a rotating electric machine according to any one of Technical Ideas 1 to 7.

[0063] (Technical Thought 9) A stator according to any one of Technical Ideas 1 to 8; a rotor having a plurality of permanent magnets arranged in a circumferential direction and rotating together with the shaft; The rotor is disposed on the outer periphery of the stator so that the inner periphery of the permanent magnet faces the outer periphery of the teeth. Rotating electric motor.

[0064] (Technical Thought 10) a ring-shaped base portion having a predetermined width in the axial direction; a plurality of teeth formed radially protruding from the base portion, spaced apart from each other in the circumferential direction, and each having the predetermined width in the axial direction; a bobbin that covers the circumferential and axial outer periphery of the teeth; a coil wound around the outer periphery of the bobbin, The base portion is divided into two in the axial direction, a first base portion and a second base portion, which are stacked in the axial direction such that the first base portion is disposed on a first axial direction side and the second base portion is disposed on a second axial direction side, The teeth are divided into two parts in the circumferential direction, and the first teeth are formed to protrude radially from the first base portion and the second teeth are formed to protrude radially from the second base portion, and are arranged apart in the circumferential direction, The bobbin is divided into two parts in the circumferential direction and in the axial direction, with a first direction first bobbin and a second direction first bobbin being arranged on the first direction side and the second direction side of the first teeth portion in the axial direction, and a first direction second bobbin and a second direction second bobbin being arranged on the first direction side and the second direction side of the second teeth portion in the axial direction, a ring-shaped first reel wall portion is disposed on the inner peripheral side of the first direction first bobbin, the ring-shaped first reel wall portion being located in the first direction of the first base portion and connecting the first direction first bobbins adjacent in the circumferential direction; a ring-shaped first connection portion that connects the second direction first bobbins adjacent in the circumferential direction is disposed on the inner peripheral side of the second direction first bobbins, and the first connection portion is connected to the second direction first bobbin via a first connection portion on the inner peripheral side further inward than the innermost peripheral end of the coil; a ring-shaped second reel wall portion is disposed on the inner peripheral side of the second direction second bobbin, the ring-shaped second reel wall portion being located in the second direction of the second base portion and connecting the second bobbins adjacent in the circumferential direction; A ring-shaped second connection portion that connects the first-direction second bobbins adjacent in the circumferential direction is disposed on the inner peripheral side of the first-direction second bobbins, and the second connection portion is connected to the first-direction second bobbin via a second connection portion on the inner peripheral side further inward than the innermost peripheral end of the coil. A method for manufacturing a stator of a rotating electric machine, comprising: The first base portion and the second base portion are stacked to form the base portion and the teeth portion; Next, the first reel wall portion, the first direction first bobbin, the second connection portion, and the first direction second bobbin are arranged in a first direction of the base portion and the teeth portion, and the second reel wall portion, the second direction second bobbin, the first connection portion, and the second direction first bobbin are arranged in a second direction of the base portion and the teeth portion, Next, the coil is wound around the outer periphery of the bobbin, Next, the first connecting portion is disconnected to separate the first connecting portion from the bobbin, and the second connecting portion is disconnected to separate the second connecting portion from the bobbin. A method for manufacturing a stator for a rotating electrical machine. (Technical Thought 11) a ring-shaped base portion having a predetermined width in the axial direction; a plurality of teeth formed radially protruding from the base portion, spaced apart from each other in the circumferential direction, and each having a predetermined width in the axial direction; a bobbin that covers the circumferential and axial outer periphery of the teeth; a coil wound around the outer periphery of the bobbin, The base portion is divided into n portions in the axial direction, where n is a natural number of 3 or more, and the first base portion, the second base portion, and the third base portion through the n-th base portion are stacked and arranged in the axial direction such that the first base portion is arranged on a first axial direction side, the second base portion is arranged on a second axial direction side, and the third base portion through the n-th base portion are arranged midway between the first and second axial directions, The teeth are divided into n parts in the circumferential direction, and a first teeth part formed to protrude radially from the first base part, a second teeth part formed to protrude radially from the second base part, and third teeth parts through n-th teeth parts formed to protrude radially from the third base part through the n-th base part are arranged apart from each other in the circumferential direction, The bobbin is divided into n parts in the circumferential direction and into two parts in the axial direction, with the first direction first bobbin and the second direction first bobbin being arranged on the first direction side and the second direction side of the first teeth portion in the axial direction, the first direction second bobbin and the second direction second bobbin being arranged on the first direction side and the second direction side of the second teeth portion in the axial direction, and the first direction third bobbin through the first direction n-th bobbin and the second direction third bobbin through the second direction n-th bobbin being arranged on the first direction side and the second direction side of the third teeth portion through the n-th teeth portion in the axial direction, a ring-shaped first reel wall portion is disposed on the inner peripheral side of the first direction first bobbin, the ring-shaped first reel wall portion being located in the first direction of the first base portion and connecting the first direction first bobbins adjacent in the circumferential direction; a ring-shaped second connection portion that connects the first-direction second bobbins adjacent in the circumferential direction is disposed on the inner peripheral side of the first-direction second bobbins, and the second connection portion is connected to the first-direction second bobbin via a second connection portion on the inner peripheral side further inward than the innermost peripheral end of the coil; ring-shaped 3A-th connection portions through nA-th connection portions are arranged on the inner circumferential sides of the first-direction third bobbin through the first-direction n-th bobbin, connecting the first-direction third bobbins through the first-direction n-th bobbins adjacent in the circumferential direction, and the 3A-th connection portions through nA-th connection portions are connected to the first-direction third bobbins through the first-direction n-th bobbins on the inner circumferential sides further inward than the innermost circumferential end of the coil via 3A-th connection portions through nA-th connection portions; a ring-shaped first connection portion that connects the second direction first bobbins adjacent in the circumferential direction is disposed on the inner peripheral side of the second direction first bobbins, and the first connection portion is connected to the second direction first bobbin via a first connection portion on the inner peripheral side further inward than the innermost peripheral end of the coil; a ring-shaped second reel wall portion is disposed on the inner peripheral side of the second-direction second bobbin, the second reel wall portion being located in the second direction of the second base portion and connecting the second-direction second bobbins adjacent in the circumferential direction; On the inner circumferential side of the second-direction third bobbin to the second-direction nth bobbin, ring-shaped 3B connection portions to nB connection portions that connect the second-direction third bobbins to the second-direction nth bobbins that are adjacent in the circumferential direction are arranged, and the 3B connection portions to nB connection portions are connected to the second-direction third bobbins to the second-direction nth bobbins further inward from the innermost circumferential end of the coil via 3B connection portions to nB connection portions. A method for manufacturing a stator of a rotating electric machine, comprising: the first base portion, the second base portion, and the third to nth base portions are stacked to form the base portions and the teeth portions; Next, the first reel wall portion, the first direction first bobbin, the second connection portion, the first direction second bobbin, the 3A connection portion through the nA connection portion, and the first direction third bobbin through the first direction nth bobbin are arranged in a first direction of the base portion and the teeth portion, and the second reel wall portion, the second direction second bobbin, the first connection portion, the second direction first bobbin, the 3B connection portion through the nB connection portion, and the second direction third bobbin through the second direction nth bobbin are arranged in a second direction of the base portion and the teeth portion, Next, the coil is wound around the outer periphery of the bobbin, Next, the first connecting portion is disconnected to separate the first connecting portion from the second direction first bobbin, the second connecting portion is disconnected to separate the second connecting portion from the first direction second bobbin, the 3A connecting portion to the nA connecting portion are disconnected to separate the 3A connecting portion to the nA connecting portion from the first direction third bobbin to the first direction nth bobbin, and the 3B connecting portion to the nB connecting portion are disconnected to separate the 3B connecting portion to the nB connecting portion from the second direction third bobbin to the second direction nth bobbin. A method for manufacturing a stator for a rotating electrical machine. [Explanation of symbols]

[0065] 1 Rotating electric machine 300 rotors 400 Stator 404 Coil 410 Bobbin 412 First direction bobbin 414 Second-direction bobbin 420 Reel wall 421 Connection 422 Connection section

Claims

1. a ring-shaped base portion having a predetermined width in the axial direction; a plurality of teeth formed radially protruding from the base portion, spaced apart from each other in the circumferential direction, and each having a predetermined width in the axial direction; a bobbin that covers the circumferential and axial outer periphery of the teeth; a coil wound around the outer periphery of the bobbin, The base plate portion is divided into two in the axial direction, a first base plate portion and a second base plate portion, which are stacked in the axial direction such that the first base plate portion is disposed on a first axial direction side and the second base plate portion is disposed on a second axial direction side, The teeth are divided into two parts in the circumferential direction, and a first teeth part is formed to protrude radially from the first base part, and a second teeth part is formed to protrude radially from the second base part, and the first teeth part is arranged apart from the second base part in the circumferential direction. The bobbin is divided into two parts in the circumferential direction and in the axial direction, with a first direction first bobbin and a second direction first bobbin being arranged on the first direction side and the second direction side of the first teeth portion in the axial direction, and a first direction second bobbin and a second direction second bobbin being arranged on the first direction side and the second direction side of the second teeth portion in the axial direction, a ring-shaped first reel wall portion is disposed on the inner peripheral side of the first direction first bobbin, the ring-shaped first reel wall portion being located in the first direction of the first base portion and connecting the first direction first bobbins adjacent in the circumferential direction; a ring-shaped first connection portion that connects the second direction first bobbins that are adjacent in the circumferential direction is disposed on the inner peripheral side of the second direction first bobbins, and the first connection portion is connected to the second direction first bobbin via a first connection portion on the inner peripheral side further inward than the innermost peripheral end of the coil; a ring-shaped second reel wall portion is disposed on the inner peripheral side of the second-direction second bobbin, the second reel wall portion being located in the second direction of the second base portion and connecting the second-direction second bobbins adjacent in the circumferential direction; a ring-shaped second connection portion that connects the first-direction second bobbins adjacent in the circumferential direction is disposed on the inner peripheral side of the first-direction second bobbins, and the second connection portion is connected to the second-direction second bobbin via a second connection portion on the inner peripheral side further inward than the innermost peripheral end of the coil; The first connecting portion between the second-direction first bobbin and the first connecting portion and the second connecting portion between the first-direction second bobbin and the second connecting portion are not connected when the coil is wound on the bobbin, and the first connecting portion and the second connecting portion do not exist when the coil is wound on the bobbin. Stator of a rotating electrical machine.

2. a ring-shaped base portion having a predetermined width in the axial direction; a plurality of teeth formed radially protruding from the base portion, spaced apart from each other in the circumferential direction, and each having a predetermined width in the axial direction; a bobbin that covers the circumferential and axial outer periphery of the teeth; a coil wound around the outer periphery of the bobbin, The base portion is divided into n portions in the axial direction, where n is a natural number of 3 or more, and the first base portion, the second base portion, and the third base portion through the n-th base portion are stacked and arranged in the axial direction such that the first base portion is arranged on a first axial direction side, the second base portion is arranged on a second axial direction side, and the third base portion through the n-th base portion are arranged midway between the first and second axial directions, The teeth are divided into n parts in the circumferential direction, and a first teeth part is formed to protrude radially from the first base part, a second teeth part is formed to protrude radially from the second base part, and third teeth part through n-th teeth part are formed to protrude radially from the third base part through the n-th base part, and are arranged apart from each other in the circumferential direction. The bobbin is divided into n parts in the circumferential direction and into two parts in the axial direction, with a first direction first bobbin and a second direction first bobbin arranged on the first direction side and the second direction side of the first teeth portion in the axial direction, a first direction second bobbin and a second direction second bobbin arranged on the first direction side and the second direction side of the second teeth portion in the axial direction, and a first direction third bobbin through a first direction n-th bobbin and a second direction third bobbin through a second direction n-th bobbin arranged on the first direction side and the second direction side of the third teeth portion and the n-th teeth portion in the axial direction, a ring-shaped first reel wall portion is disposed on the inner peripheral side of the first direction first bobbin, the ring-shaped first reel wall portion being located in the first direction of the first base portion and connecting the first direction first bobbins adjacent in the circumferential direction; a ring-shaped second connection portion that connects the first-direction second bobbins adjacent in the circumferential direction is disposed on the inner peripheral side of the first-direction second bobbins, and the second connection portion is connected to the first-direction second bobbin via a second connection portion on the inner peripheral side further inward than the innermost peripheral end of the coil; ring-shaped third-A connection portions through n-th A connection portions that connect the third first-direction bobbins through the n-th first-direction bobbins that are adjacent in the circumferential direction are disposed on the inner peripheral sides of the third first-direction bobbins through the n-th first-direction bobbins, and the third-A connection portions through n-th A connection portions are connected to the third first-direction bobbins through the n-th first-direction bobbins on the inner peripheral side further inward than the innermost peripheral end of the coil via third-A connection portions through n-th A connection portions; a ring-shaped first connection portion that connects the second direction first bobbins that are adjacent in the circumferential direction is disposed on the inner peripheral side of the second direction first bobbins, and the first connection portion is connected to the second direction first bobbin via a first connection portion on the inner peripheral side further inward than the innermost peripheral end of the coil; a ring-shaped second reel wall portion is disposed on the inner peripheral side of the second-direction second bobbin, the second reel wall portion being located in the second direction of the second base portion and connecting the second-direction second bobbins adjacent in the circumferential direction; ring-shaped third-B connection portions through n-th-B connection portions are arranged on the inner peripheral sides of the second-direction third bobbin through the second-direction n-th bobbin, connecting the second-direction third bobbins through the second-direction n-th bobbins adjacent in the circumferential direction, and the third-B connection portions through n-th-B connection portions are connected to the second-direction third bobbins through the second-direction n-th bobbins on the inner peripheral side further inward than the innermost peripheral end of the coil via third-B connection portions through n-th-B connection portions; The second connection portion between the first-direction second bobbin and the second connection portion, the 3A connection portion through the nA connection portion between the first-direction third bobbin through the first-direction nth bobbin and the 3A connection portion through the nA connection portion, the first connection portion between the second-direction first bobbin and the first connection portion, and the 3B connection portion through the nB connection portion between the second-direction third bobbin through the second-direction nth bobbin and the 3B connection portion through the nB connection portion are not connected when the coil is wound on the bobbin, and when the coil is wound on the bobbin, the first connection portion, the second connection portion, the 3A connection portion through the nA connection portion, and the 3B connection portion through the nB connection portion do not exist. Stator of a rotating electrical machine.

3. The first connecting portion has a structure that bridges an outer periphery of the first connecting portion and an inner periphery of the second direction first bobbin.

3. The stator of a rotating electrical machine according to claim 1.

4. The axial width of the first connecting portion is shorter than the axial width of the first connecting portion and the axial width of the second direction first bobbin.

4. The stator of claim 3.

5. The axial width of the first coupling portion is smaller on the first bobbin side in the second direction than on the first connection portion side.

5. The stator of claim 4.

6. The first coupling portion connects the first connection portion and the second direction first bobbin at two points spaced apart in the circumferential direction.

3. The stator of a rotating electrical machine according to claim 1.

7. A relief portion is formed in the second reel wall portion at a portion corresponding to the first connecting portion, for allowing traces of the first connecting portion to escape.

3. The stator of a rotating electrical machine according to claim 1.

8. The first connecting portion and the first linking portion of the second-direction first bobbin and the second connecting portion and the second linking portion of the first-direction second bobbin have the same shape.

3. The stator of a rotating electrical machine according to claim 1.

9. The stator according to claim 1 or 2; a rotor having a plurality of permanent magnets arranged in a circumferential direction and rotating together with the shaft; The rotor is disposed on the outer periphery of the stator so that the inner periphery of the permanent magnet faces the outer periphery of the teeth. Rotating electric motor.

10. a ring-shaped base portion having a predetermined width in the axial direction; a plurality of teeth formed radially protruding from the base portion, spaced apart from each other in the circumferential direction, and each having the predetermined width in the axial direction; a bobbin that covers the circumferential and axial outer periphery of the teeth; a coil wound around the outer periphery of the bobbin, The base plate portion is divided into two in the axial direction, a first base plate portion and a second base plate portion, which are stacked in the axial direction such that the first base plate portion is disposed on a first axial direction side and the second base plate portion is disposed on a second axial direction side, The teeth are divided into two parts in the circumferential direction, and a first teeth part is formed to protrude radially from the first base part, and a second teeth part is formed to protrude radially from the second base part, and the first teeth part is arranged apart from the second base part in the circumferential direction. The bobbin is divided into two parts in the circumferential direction and in the axial direction, with a first direction first bobbin and a second direction first bobbin being arranged on the first direction side and the second direction side of the first teeth portion in the axial direction, and a first direction second bobbin and a second direction second bobbin being arranged on the first direction side and the second direction side of the second teeth portion in the axial direction, a ring-shaped first reel wall portion is disposed on the inner peripheral side of the first direction first bobbin, the ring-shaped first reel wall portion being located in the first direction of the first base portion and connecting the first direction first bobbins adjacent in the circumferential direction; a ring-shaped first connection portion that connects the second direction first bobbins that are adjacent in the circumferential direction is disposed on the inner peripheral side of the second direction first bobbins, and the first connection portion is connected to the second direction first bobbin via a first connection portion on the inner peripheral side further inward than the innermost peripheral end of the coil; a ring-shaped second reel wall portion is disposed on the inner peripheral side of the second direction second bobbin, the ring-shaped second reel wall portion being located in the second direction of the second base portion and connecting the second bobbins adjacent in the circumferential direction; A ring-shaped second connection portion that connects the first-direction second bobbins adjacent in the circumferential direction is disposed on the inner peripheral side of the first-direction second bobbins, and the second connection portion is connected to the first-direction second bobbin via a second connection portion on the inner peripheral side further inward than the innermost peripheral end of the coil. A method for manufacturing a stator of a rotating electric machine, comprising: The first base portion and the second base portion are stacked to form the base portion and the teeth portion; Next, the first reel wall portion, the first direction first bobbin, the second connection portion, and the first direction second bobbin are arranged in a first direction of the base portion and the teeth portion, and the second reel wall portion, the second direction second bobbin, the first connection portion, and the second direction first bobbin are arranged in a second direction of the base portion and the teeth portion, Next, the coil is wound around the outer periphery of the bobbin, Next, the first connecting portion is disconnected to separate the first connecting portion from the bobbin, and the second connecting portion is disconnected to separate the second connecting portion from the bobbin. A method for manufacturing a stator for a rotating electrical machine.

11. a ring-shaped base portion having a predetermined width in the axial direction; a plurality of teeth formed radially protruding from the base portion, spaced apart from each other in the circumferential direction, and each having a predetermined width in the axial direction; a bobbin that covers the circumferential and axial outer periphery of the teeth; a coil wound around the outer periphery of the bobbin, The base portion is divided into n portions in the axial direction, where n is a natural number of 3 or more, and the first base portion, the second base portion, and the third base portion through the n-th base portion are stacked and arranged in the axial direction such that the first base portion is arranged on a first axial direction side, the second base portion is arranged on a second axial direction side, and the third base portion through the n-th base portion are arranged midway between the first and second axial directions, The teeth are divided into n parts in the circumferential direction, and a first teeth part is formed to protrude radially from the first base part, a second teeth part is formed to protrude radially from the second base part, and third teeth part through n-th teeth part are formed to protrude radially from the third base part through the n-th base part, and are arranged apart from each other in the circumferential direction. The bobbin is divided into n parts in the circumferential direction and into two parts in the axial direction, with a first direction first bobbin and a second direction first bobbin arranged on the first direction side and the second direction side of the first teeth portion in the axial direction, a first direction second bobbin and a second direction second bobbin arranged on the first direction side and the second direction side of the second teeth portion in the axial direction, and a first direction third bobbin through a first direction n-th bobbin and a second direction third bobbin through a second direction n-th bobbin arranged on the first direction side and the second direction side of the third teeth portion and the n-th teeth portion in the axial direction, a ring-shaped first reel wall portion is disposed on the inner peripheral side of the first direction first bobbin, the ring-shaped first reel wall portion being located in the first direction of the first base portion and connecting the first direction first bobbins adjacent in the circumferential direction; a ring-shaped second connection portion that connects the first-direction second bobbins adjacent in the circumferential direction is disposed on the inner peripheral side of the first-direction second bobbins, and the second connection portion is connected to the first-direction second bobbin via a second connection portion on the inner peripheral side further inward than the innermost peripheral end of the coil; ring-shaped third-A connection portions through n-th A connection portions that connect the third first-direction bobbins through the n-th first-direction bobbins that are adjacent in the circumferential direction are disposed on the inner peripheral sides of the third first-direction bobbins through the n-th first-direction bobbins, and the third-A connection portions through n-th A connection portions are connected to the third first-direction bobbins through the n-th first-direction bobbins on the inner peripheral side further inward than the innermost peripheral end of the coil via third-A connection portions through n-th A connection portions; a ring-shaped first connection portion that connects the second direction first bobbins that are adjacent in the circumferential direction is disposed on the inner peripheral side of the second direction first bobbins, and the first connection portion is connected to the second direction first bobbin via a first connection portion on the inner peripheral side further inward than the innermost peripheral end of the coil; a ring-shaped second reel wall portion is disposed on the inner peripheral side of the second-direction second bobbin, the second reel wall portion being located in the second direction of the second base portion and connecting the second-direction second bobbins adjacent in the circumferential direction; On the inner peripheral side of the second direction third bobbin to the second direction nth bobbin, ring-shaped thirdB connection portions to nB connection portions that connect the second direction third bobbins to the second direction nth bobbins that are adjacent in the circumferential direction are arranged, and the thirdB connection portions to nB connection portions are connected to the second direction third bobbins to the second direction nth bobbins via thirdB connection portions to nB connection portions on the inner peripheral side further inward than the innermost peripheral end of the coil. A method for manufacturing a stator of a rotating electric machine, comprising: the first base portion, the second base portion, and the third to nth base portions are stacked to form the base portions and the teeth portions; Next, the first reel wall portion, the first direction first bobbin, the second connection portion, the first direction second bobbin, the 3A connection portion through the nA connection portion, and the first direction third bobbin through the first direction nth bobbin are arranged in a first direction of the base portion and the teeth portion, and the second reel wall portion, the second direction second bobbin, the first connection portion, the second direction first bobbin, the 3B connection portion through the nB connection portion, and the second direction third bobbin through the second direction nth bobbin are arranged in a second direction of the base portion and the teeth portion, Next, the coil is wound around the outer periphery of the bobbin, Next, the first connecting portion is disconnected to separate the first connecting portion from the second direction first bobbin, the second connecting portion is disconnected to separate the second connecting portion from the first direction second bobbin, the 3A connecting portion to the nA connecting portion are disconnected to separate the 3A connecting portion to the nA connecting portion from the first direction third bobbin to the first direction nth bobbin, and the 3B connecting portion to the nB connecting portion are disconnected to separate the 3B connecting portion to the nB connecting portion from the second direction third bobbin to the second direction nth bobbin. A method for manufacturing a stator for a rotating electrical machine.

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