Motor and wiring member

Abstract

A motor according to the present invention includes a plurality of coils disposed on a circumference centered on an axis of rotation, a wiring member disposed coaxially with the axis of rotation, and a plurality of conducting wires. The wiring member has a first face, a second face that is a face on an opposite side from the first face, and a plurality of through holes that connect the first face and the second face. One of the first face and the second face is a face that faces the plurality of coils. The first face includes a plurality of first grooves that have annular forms surrounding the axis of rotation, and the second face includes a plurality of second grooves in a direction intersecting the plurality of first grooves in plan view of the first face. The plurality of through holes are each provided at each intersecting portion of the plurality of first grooves and the plurality of second grooves. The plurality of conducting wires are disposed in the plurality of first grooves, the plurality of second grooves, and the plurality of through holes.

Description

Technical Field

[0001] The present disclosure relates to a motor and a wiring member.

Background Art

[0002] An axial-gap type motor is disclosed in Patent Document 1. The electric motor of Patent Document 1 is a three-phase alternating current motor. The electric motor includes a stator and a rotor. The stator and the rotor face each other in the axial direction of the rotor.

[0003] The stator includes an iron core and twelve coils. The iron core includes a back yoke and twelve cores. The shape of the back yoke is an annular plate shape. The twelve cores are arranged at equal intervals in the circumferential direction of the back yoke. Each coil is arranged on the outer periphery of each core. The twelve coils are configured as one coil group with four coils each. The three coil groups are the U-phase coil group, the V-phase coil group, and the W-phase coil group, respectively. The four coils constituting each phase coil group are formed by winding a continuous coil wire. The four coils constituting each phase coil group are arranged at intervals in the rotation direction of the rotor.

[0004] In each phase coil group, adjacent coils in the rotation direction are connected by wiring constituted by a part of the coil wire. The winding ends of each coil connected to this wiring are arranged on the inner peripheral side of the stator. The positions of the winding ends are shifted in the radial direction of the stator so that the wirings of different phase coil groups do not interfere with each other. Specifically, the winding ends of the V-phase coil group are located radially inward of the winding ends of the U-phase coil group. And the winding ends of the W-phase coil group are located radially inward of the winding ends of the V-phase coil group.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

[0006] The motor of the present disclosure includes a plurality of coils arranged on a circumference centered on a rotation axis, a wiring member arranged coaxially with the rotation axis, and a plurality of conducting wires, The wiring member has a first surface, a second surface that is a surface opposite to the first surface, and a plurality of through holes connecting the first surface and the second surface, One of the first surface or the second surface is a surface facing the plurality of coils, The first surface includes a plurality of first grooves having an annular shape surrounding the rotation axis, The second surface includes a plurality of second grooves in a direction intersecting the plurality of first grooves in a plan view of the first surface, Each of the plurality of through holes is provided at each intersection of the plurality of first grooves and the plurality of second grooves, The plurality of conducting wires are arranged in the plurality of first grooves, the plurality of second grooves, and the plurality of through holes.

[0007] The wiring member of the present disclosure includes a main body portion in which a plurality of conducting wires for connecting a plurality of coils provided in a motor are arranged, The main body portion has a first surface, a second surface that is a surface opposite to the first surface, and a plurality of through holes connecting the first surface and the second surface, The first surface includes a plurality of first grooves having an annular shape surrounding the centroid of the first surface, The second surface includes a plurality of second grooves in a direction intersecting the plurality of first grooves in a plan view of the first surface, Each of the plurality of through holes is provided at each intersection of the plurality of first grooves and the plurality of second grooves, The plurality of first grooves, the plurality of second grooves, and the plurality of through holes are configured such that the plurality of conductive wires are disposed therein.

Brief Description of the Drawings

[0008]

Figure 1

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BRIEF DESCRIPTION OF THE DRAWINGS

[0009] [PROBLEMS TO BE SOLVED BY THE PRESENT DISCLOSURE] In Patent Document 1, since a plurality of coils constituting each phase coil group are formed by winding a continuous coil wire, it is likely that the production of each phase coil group becomes complicated. In particular, since it is necessary to wind the coil wire so that the position of the winding end is displaced in the radial direction of the stator, the production of each phase coil group is likely to become complicated. Therefore, the productivity of the motor decreases. Moreover, when the type of connection is a star connection or a delta connection, when the connection pattern is 4 series, 2 series 2 parallel, or 4 parallel, it is necessary to prepare coil groups corresponding to each case. Therefore, the technique of Patent Document 1 cannot cope with various types of connections and connection patterns, and has low versatility.

[0010] One object of the present disclosure is to provide a motor with excellent productivity. Another object of the present disclosure is to provide a wiring member with high versatility that can improve the productivity of the motor.

[0011] [EFFECTS OF THE PRESENT DISCLOSURE] The motor of the present disclosure is excellent in productivity. The wiring member of the present disclosure has high versatility and can improve the productivity of the motor.

[0012] 《DESCRIPTION OF EMBODIMENTS OF THE PRESENT DISCLOSURE》 First, embodiments of the present disclosure will be listed and described.

[0013] (1) A motor according to one aspect of the present disclosure is a plurality of coils arranged on a circumference centered on a rotation axis, and A wiring member disposed coaxially with the rotating shaft, a plurality of conducting wires, and is provided with, the wiring member is, a first surface, a second surface which is the surface on the opposite side of the first surface, and a plurality of through holes connecting the first surface and the second surface, one of the first surface or the second surface is a surface facing the plurality of coils, the first surface includes a plurality of first grooves having an annular shape surrounding the rotating shaft, the second surface includes a plurality of second grooves in a direction intersecting the plurality of first grooves in a plan view of the first surface, each of the plurality of through holes is provided at each of the intersection points of the plurality of first grooves and the plurality of second grooves, the plurality of conducting wires are arranged in the plurality of first grooves, the plurality of second grooves, and the plurality of through holes.

[0014] The above motor is excellent in productivity. The reasons are as follows.

[0015] The above motor can be manufactured by performing the following steps a to c by including the above wiring member. In step a, a plurality of coils that are not connected to each other and are independent of each other are prepared. In step b, a wiring member in which conducting wires are arranged in the first grooves, the second grooves, and the through holes so as to form a predetermined conducting wire pattern is prepared. Step c is to connect the conducting wires arranged in the wiring member and the plurality of coils.

[0016] By using the wiring member, the plurality of coils can be connected to each other by the conducting wires. Therefore, in the manufacturing process of the above motor, it is not necessary to form a plurality of coils by winding a continuous winding. Since the wiring member includes a plurality of first grooves, a plurality of second grooves, and a plurality of through holes, it can correspond to various conducting wire patterns. That is, the conducting wires arranged in the wiring member can be arranged at positions corresponding to the ends of the winding. Therefore, in the manufacturing process of the above motor, it is not necessary to wind the winding so that the positions of the ends of the winding in the plurality of coils are displaced. Therefore, in the manufacturing process of the above motor, it is easy to manufacture a plurality of coils.

[0017] (2) As one form of the motor, The number of the plurality of first grooves is equal to or more than the number of phases of the motor, The number of the plurality of second grooves may be a number that is two or more times the number of coils.

[0018] In the above motor, the conducting wires for each phase can be arranged in different first grooves, second grooves, and through holes. Therefore, it is easy to perform the arrangement work of the conducting wires with respect to the wiring member. Thus, the above motor is excellent in productivity.

[0019] (3) As one form of the motor, The shape of the wiring member is a disk shape centered on the rotating shaft, The plurality of first grooves are provided concentrically, The plurality of second grooves may be provided radially.

[0020] Since the plurality of first grooves are provided concentrically, it is easy to align each first groove along the circumferential direction of the plurality of coils. Since the plurality of second grooves are provided radially, it is easy to correspond the position of each second groove to each end of each coil. Thus, in the above motor, it is easy to connect the conducting wire and the coil.

[0021] (4) As one form of the motor in the above (1) or (2), The shape of the wiring member is a cylindrical shape centered on the rotating shaft, The plurality of first grooves are provided in parallel in the axial direction of the wiring member, The plurality of second grooves may be provided in parallel in the circumferential direction of the wiring member.

[0022] Since the plurality of first grooves are provided in parallel in the axial direction of the cylindrical wiring member, they are annular. Therefore, it is easy to align each first groove along the circumferential direction of the plurality of coils. Since the plurality of second grooves are provided in parallel in the circumferential direction of the wiring member, it is easy to correspond the position of each second groove to each end of each coil. Thus, in the above motor, it is easy to connect the conducting wire and the coil.

[0023] (5) As one form of the above motor, it is preferable that the wiring member is an insulator.

[0024] Since it is not necessary to provide an insulating member between the wiring member and the conductor in the above motor, it is excellent in productivity.

[0025] (6) As one form of the above motor, the wiring member is a conductor, and further, it is preferable to have an insulating member provided between each of the wiring member and the plurality of conducting wires.

[0026] In the above motor, since the wiring member is a conductor, it is easy to dissipate heat from the stator having a plurality of coils via the wiring member. The above motor can insulate the wiring member and the conducting wire by having an insulating member.

[0027] (7) The wiring member according to one aspect of the present disclosure includes a main body portion in which a plurality of conducting wires for connecting a plurality of coils provided in a motor are arranged, the main body portion has a first surface, a second surface which is a surface opposite to the first surface, and a plurality of through holes connecting the first surface and the second surface, the first surface includes a plurality of first grooves having an annular shape surrounding the center of gravity of the first surface, the second surface includes a plurality of second grooves in a direction intersecting the plurality of first grooves in a plan view of the first surface, each of the plurality of through holes is provided at each intersection of the plurality of first grooves and the plurality of second grooves, the plurality of first grooves, the plurality of second grooves, and the plurality of through holes are configured such that the plurality of conducting wires are arranged.

[0028] Since the wiring member includes a plurality of first grooves, a plurality of second grooves, and a plurality of through holes, it can be adapted to various conductor patterns, and thus has high versatility. Moreover, the wiring member can improve the productivity of the motor. By using the wiring member, as described above, in the manufacturing process of the motor, it is not necessary to form a plurality of coils by winding a continuous wire, and it is not necessary to wind the wire so that the positions of the ends of the wire in the plurality of coils are displaced.

[0029] 《Details of Embodiments of the Present Disclosure》 Details of the embodiments of the present disclosure will be described below. The same reference numerals in the drawings denote the same components.

[0030] 《Embodiment 1》 〔Motor〕 With reference to FIGS. 1 to 16, the motor 1 of Embodiment 1 will be described. FIGS. 1 and 4 illustrate a single stator - single rotor type axial - gap motor as the motor 1. A single stator - single rotor type axial - gap motor is an axial - gap motor in which the number of stators 2 and the number of rotors 3 are each one. An axial - gap motor is a motor in which the stator 2 and the rotor 3 face each other with a gap in the axial direction of the rotation axis of the rotor 3. The stator 2 and the rotor 3 are arranged coaxially with the above - mentioned rotation axis. FIG. 4 is a cross - sectional view of the motor 1 cut along the IV - IV cutting line shown in FIG. 5 in a plane parallel to the axial direction of the shaft 4. FIG. 5 is a plan view of the base portion 90 described later as viewed from the side of the wiring member 6 described later.

[0031] As shown in FIGS. 1 and 2, the motor 1 has a plurality of coils 25. The plurality of coils 25 are arranged on a circumference centered on the rotation axis of the rotor 3. Each coil 25 is arranged on the outer circumference of a tooth 23 described later. One of the features of the motor 1 of this embodiment lies in satisfying the following requirements (a) and (c). (a) As shown in FIGS. 3 and 4, the motor 1 includes a wiring member 6 arranged coaxially with the above - mentioned rotation axis and a plurality of conductors 7. (b) As shown in FIGS. 6 and 7, the wiring member 6 has a plurality of first grooves 63, a plurality of second grooves 64, and a plurality of first through holes 66. (c) As shown in FIGS. 1, 3, and 4, the plurality of conductive wires 7 are arranged in the plurality of first grooves 63, the plurality of second grooves 64, and the plurality of first through holes 66. Hereinafter, each component will be described in detail. In the following description, on the rotor 3 side and the stator 2 side of the rotation axis, the rotor 3 side may be referred to as the upper side and the stator 2 side may be referred to as the lower side. This up and down does not necessarily coincide with the up and down in the use state of the motor 1.

[0032] [Rotor] As shown in FIG. 4, the rotor 3 includes a rotor body 31 and at least one magnet 35.

[0033] (Rotor body) The rotor body 31 is rotatably supported with respect to the case 9 by the shaft 4, the first bearing 51, and the second bearing 55. The shaft 4 is the rotation axis of the rotor 3. The shaft 4 is configured as a solid round bar. The first bearing 51 and the second bearing 55 rotatably support the shaft 4. The first bearing 51 is disposed inside a protruding portion 90t described later. The second bearing 55 is disposed inside a recess 911a described later. The rotor body 31 is an annular member. The rotor body 31 is provided with a through hole at the center. The shaft 4 is provided in this through hole. In this embodiment, the shaft 4 is press-fitted into the through hole, so that the rotor body 31 and the shaft 4 are combined.

[0034] (Magnet) The magnet 35 is fixed to the rotor body 31. The number of magnets 35 may be singular or plural. When the number of magnets 35 is singular, the shape of the magnet 35 is an annular plate shape. In this magnet 35, the S pole and the N pole are alternately arranged in the circumferential direction. When the number of magnets 35 is plural, the number of magnets 35 is the same as the number of teeth 23. The plurality of magnets 35 are arranged at equal intervals in the circumferential direction of the rotor body 31. The shape of each magnet 35 is, for example, a flat plate shape. The planar shape of each magnet 35 is, for example, the same as the planar shape of the end face of the tooth 23. Each magnet 35 is magnetized in the axial direction of the rotation axis of the rotor 3. The magnetization directions of the magnets 35 adjacent to each other in the circumferential direction of the rotor body 31 are opposite to each other. The rotor 3 rotates by the magnet 35 repeatedly attracting and repelling each tooth 23 due to the rotating magnetic field generated in the stator 2.

[0035] [Stator] As shown in FIGS. 1 and 4, the stator 2 is fixed to the first surface 90f of the base portion 90 described later. As shown in FIG. 2, the stator 2 includes a stator core 21 and a plurality of coils 25.

[0036] (Stator Core) The stator core 21 includes a yoke 22 and a plurality of teeth 23. The yoke 22 magnetically couples adjacent teeth 23 among the teeth 23 arranged in the circumferential direction of the yoke 22. The shape of the yoke 22 is an annular plate shape. Each tooth 23 is arranged at a predetermined interval in the circumferential direction of the yoke 22. The number of teeth 23 is 12 in this embodiment. The number of teeth 23 is not limited to this embodiment and can be appropriately selected. The shape of each tooth 23 is a prismatic shape or a cylindrical shape. A known configuration can be used for the stator core 21. Each tooth 23 and the yoke 22 in this embodiment are formed of an integral compacted powder body. A known material can be used as the constituent material of the compacted powder body.

[0037] As shown in FIG. 4, the stator core 21 has holes. A fastening member 95 is provided in these holes. The fastening member 95 fixes the stator core 21 to the base portion 90. The fastening member 95 suppresses the displacement between the stator 2 and the base portion 90. An example of the fastening member 95 is a screw or a bolt. The holes are formed from the lower surface of the yoke 22 to the middle of the teeth 23. The number of holes may be less than the number of teeth 23 or may be the same as the number of teeth 23.

[0038] (Coil) As shown in FIGS. 1 and 2, each coil 25 includes a cylindrical portion and a pair of end portions. In FIGS. 1 and 2, only the cylindrical portion of the coil 25 is shown, and the illustration of the pair of end portions is omitted. Each cylindrical portion is formed by spirally winding independent windings. Each cylindrical portion is arranged on the outer periphery of the teeth 23. The cross-sectional shape of each cylindrical portion is, for example, a shape corresponding to the cross-sectional shape of the teeth 23. The coil 25 of this embodiment is an edge-wound coil. The windings of the coil 25 are made of covered rectangular copper wire. The number of coils 25 is the same as the number of teeth 23, and in this embodiment, it is 12. In this embodiment, each end portion of each coil 25 is arranged on the outer peripheral side of the stator 2. Different from this embodiment, each end portion of each coil 25 may be arranged on the inner peripheral side of the stator 2.

[0039] (Connection terminal) In this embodiment, connection terminals 26 are connected to each end of each coil 25 as shown in FIGS. 2 and 4. The connection terminals 26 connect each end to a conductor wire 7 described later. Soldering or welding can be used for the connection between the connection terminals 26 and each end, and for the connection between the connection terminals 26 and the conductor wire 7. An example of the material of the connection terminals 26 is the same material as that of the coil 25. The number of connection terminals 26 in this embodiment is twice the number of coils 25. In this embodiment, the shape of each connection terminal 26 is a round bar shape. Note that the shape of each connection terminal 26 is not limited to the shape in this embodiment and can be appropriately selected. As shown in FIG. 4, each connection terminal 26 is inserted into the second through hole of the base portion 90. The base portion 90 of this embodiment is a conductor. Therefore, an insulating member 28 is provided between each connection terminal 26 and each second through hole. An example of the insulating member 28 is a rubber tube. If the base portion 90 is an insulator, the insulating member 28 is not necessary. Different from this embodiment, when each end is directly connected to the conductor wire 7, the connection terminals 26 are not necessary.

[0040] [Wiring member] As shown in FIGS. 1, 3, and 4, a plurality of conductor wires 7 are arranged in the wiring member 6. The two-dot chain line shown in FIG. 3 indicates the connection location between the conductor wire 7 above the paper surface and the conductor wire 7 below the paper surface of the wiring member 6. As shown in FIGS. 6 and 7, the wiring member 6 of this embodiment includes an annular main body portion 60 and a mounting portion 68. The shape of the main body portion 60 of this embodiment is a disc shape. The center of the main body portion 60 is located on the above-mentioned rotation axis. The center of the main body portion 60 is the center of the circumscribed circle of the main body portion 60. The mounting portion 68 projects radially outward from the outer peripheral surface of the main body portion 60. The number of mounting portions 68 is four. Each mounting portion 68 is provided with a through hole. Although not shown, a fastening member is inserted into the through hole. By this fastening member, the mounting portion 68 is fixed to the second surface 90s of the base portion 90 shown in FIG. 4.

[0041] The main body portion 60 has a first surface 61 shown in FIG. 6 and a second surface 62 shown in FIG. 7. Also, as shown in FIGS. 6 and 7, the main body portion 60 has a plurality of first through-holes 66 and a plurality of second through-holes 67. In this embodiment, as shown in FIGS. 1 and 4, the first surface 61 is a surface facing the plurality of coils 25. In this embodiment, the second surface 62 is a surface on the opposite side of the first surface 61. The second surface 62 of this embodiment faces the second plate portion 921 of the second cover portion 92 described later. Different from this embodiment, the first surface 61 may face the second plate portion 921, and the second surface 62 may face the plurality of coils 25.

[0042] As shown in FIG. 6, the first surface 61 is provided with a plurality of first grooves 63. The shape of each first groove 63 is annular. Each first groove 63 is formed so as to surround the rotation axis. In this embodiment, the shape of each first groove 63 is circular annular. The number of the first grooves 63 is equal to or more than the number of phases of the motor 1. The number of phases of the motor 1 is the number of phases of the drive power source. The number of phases of the motor 1 is the number of phases of the current supplied to the plurality of coils 25. For example, when the motor 1 is a three-phase alternating current motor, the number of the first grooves 63 is 3 or more. Specifically, when the motor 1 is a three-phase alternating current motor, the number of the first grooves 63 is 3 or 4.

[0043] In this embodiment, the number of the first grooves 63 is 3. The three circular annular first grooves 63 are provided concentrically. The center of each first groove 63 is the same as the center of the main body portion 60. Among the three first grooves 63, from the first groove 63 on the outer peripheral side of the main body portion 60 to the first groove 63 on the inner peripheral side, they may be referred to as the outer peripheral first groove 63, the intermediate first groove 63, and the inner peripheral first groove 63 in order. Conductors 7 of different phases are not arranged in each of the outer peripheral first groove 63, the intermediate first groove 63, and the inner peripheral first groove 63.

[0044] As shown in FIG. 7, the second surface 62 is provided with a plurality of second grooves 64. The plurality of second grooves 64 are grooves extending in a direction intersecting the first groove 63. Intersecting means that the first groove 63 and the second groove 64 intersect in a plan view of the first surface 61. The number of the second grooves 64 is a number that is two times or more the number of the coils 25. Since the number of the coils 25 in this embodiment is 12 as described above, the number of the second grooves 64 in this embodiment is 24 or more.

[0045] The number of the second grooves 64 in this embodiment is 24. The plurality of second grooves 64 in this embodiment are provided radially along the radial direction from the inner peripheral side to the outer peripheral side of the main body portion 60. The shape of each second groove 64 is linear. The first end portion of each second groove 64 is located on the inner peripheral side of the inner peripheral first groove 63. The second end portion of each second groove 64 is located on the outer peripheral side of the outer peripheral first groove 63. Different-phase conductors 7 are not arranged in each second groove 64.

[0046] The second surface 62 may further include at least one third groove 65. The shape of the third groove 65 is annular, similar to the first groove 63. The third groove 65 is formed so as to surround the rotation axis.

[0047] When the number of the first grooves 63 is the same as the number of phases of the motor 1, the number of the third grooves 65 may be two. For example, when the motor 1 is a three-phase AC motor and the number of the first grooves 63 is three, the number of the third grooves 65 is two. When the number of the third grooves 65 is two, the first third groove 65 may be provided on the outer peripheral side of the outer peripheral first groove 63, and the second third groove 65 may be provided on the inner peripheral side of the inner peripheral first groove 63. The first third groove 65 may connect the second end portions of the second grooves 64. The second third groove 65 may connect the first end portions of the second grooves 64.

[0048] When the number of the first grooves 63 exceeds the number of phases of the motor 1, the number of the third grooves 65 may be one. For example, when the motor 1 is a three-phase alternating current motor and the number of the first grooves 63 is four, the number of the third grooves 65 is one. When the number of the third grooves 65 is one, the third groove 65 may be provided on the outer peripheral side of the outer peripheral first groove 63 or on the inner peripheral side of the inner peripheral first groove 63. The third groove 65 may connect the first ends of the second grooves 64 or the second ends of the second grooves 64 to each other.

[0049] In this embodiment, the second surface 62 includes two third grooves 65. The shape of each third groove 65 is an annular shape. The two third grooves 65 are provided concentrically. The center of each third groove 65 is the same as the center of the main body portion 60. The first third groove 65 is provided on the outer peripheral side of the outer peripheral first groove 63. The first third groove 65 connects the second ends of the second grooves 64 to each other. The second third groove 65 is provided on the inner peripheral side of the inner peripheral first groove 63. The second third groove 65 connects the first ends of the second grooves 64 to each other. The first third groove 65 may be referred to as the inner peripheral third groove 65, and the second third groove 65 may be referred to as the outer peripheral third groove 65.

[0050] As shown in FIGS. 6 and 7, each of the plurality of first through holes 66 is provided at each intersection of the plurality of first grooves 63 and the plurality of second grooves 64. The number of the first through holes 66 is the product of the number of the first grooves 63 and the number of the second grooves 64. In this embodiment, since the number of the first grooves 63 is three and the number of the second grooves 64 is 24, the number of the first through holes 66 is 72. Conductors 7 of different phases are not arranged in each first through hole 66.

[0051] Each of the plurality of second through holes 67 is connected to the outer peripheral third groove 65. As shown in FIG. 4, a connection terminal 26 is inserted into each second through hole 67. The number of the second through holes 67 in this embodiment is twice the number of the coils 25. Different from this embodiment, each second through hole 67 may be connected to the inner peripheral third groove 65. In that case, each end of each coil 25 and each connection terminal 26 may be arranged on the inner peripheral side of the stator 2.

[0052] The wiring member 6 is made of an insulator or a conductor. If the wiring member 6 is made of an insulator, there is no need to provide an insulating member between the wiring member 6 and the conducting wire 7. The material of the insulator is resin or ceramics. The resin is not particularly limited as long as it can withstand the operating temperature of the motor 1. An example of the resin is polyphenylene sulfide resin, polybutylene terephthalate resin, or the like. If the wiring member 6 is made of a conductor, it is easy to dissipate heat from the stator 2 through the base portion 90. However, as shown in Fig. 16, it is necessary to provide an insulating member 69 between the conducting wire 7 and the wiring member 6. Fig. 16 shows a state in which the conducting wire 7 having the insulating member 69 is disposed in the first groove 63. The material of the conductor is non-magnetic metal. An example of the non-magnetic metal is aluminum, aluminum alloy, titanium, or titanium alloy. The insulating member 69 only needs to be provided at least at the location where the conducting wire 7 and the wiring member 6 come into contact. The insulating member 69 can be formed by applying an insulating coating to at least one of the conducting wire 7 and the wiring member 6.

[0053] [Conducting wire] The conducting wire 7 shown in Fig. 3 supplies current to each coil 25 shown in Fig. 2. The number of conducting wires 7 is plural. The number of conducting wires 7 can be appropriately selected according to the type of connection and the connection pattern. As shown in Fig. 3, the conducting wire 7 is disposed in the first groove 63, the second groove 64, and the first through hole 66. Depending on the type of connection and the connection pattern, the conducting wire 7 is also disposed in the third groove 65. An example of the material of the conducting wire 7 is copper, copper alloy, aluminum, or aluminum alloy. The material of the conducting wire 7 is preferably the same as that of the coil 25. The conducting wire 7 can be manufactured by cutting a metal plate into a predetermined shape. Alternatively, the conducting wire 7 may be a bare round wire or flat wire without an insulating coating, a round wire or flat wire with an insulating coating, a litz wire, etc., and is not particularly limited.

[0054] Examples of the type of connection include star connection or delta connection when the motor 1 is a three-phase AC motor. Circuit diagrams of star connection are shown in Figs. 8 and 9. Circuit diagrams of delta connection are shown in Figs. 10 and 11.

[0055] The wiring pattern can be appropriately selected according to the specifications of the motor 1 and the number of coils 25. When the motor 1 is a three-phase AC motor and the number of coils 25 is 12 as in this embodiment, the wiring pattern in each of the U-phase, V-phase, and W-phase is 2 series 2 parallel, 4 parallel, or 4 series. 2 series 2 parallel means that, as shown in the star connection circuit diagram of FIG. 8 or the delta connection circuit diagram of FIG. 10, two coils 25 connected in series are connected in parallel. 4 parallel means that, as shown in the star connection circuit diagram of FIG. 9 or the delta connection circuit diagram of FIG. 11, four coils 25 are connected in parallel. 4 series means that, although not shown in the figure, four coils 25 are connected in series.

[0056] Unlike this embodiment, for example, when the motor 1 is a three-phase AC motor and the number of coils 25 is 18, the wiring pattern in each of the U-phase, V-phase, and W-phase is 6 parallel, 2 series 3 parallel, 3 series 2 parallel, or 6 series. Unlike this embodiment, for example, when the motor 1 is a three-phase AC motor and the number of coils 25 is 24, the wiring pattern in each of the U-phase, V-phase, and W-phase is 8 parallel, 2 series 4 parallel, 4 series 2 parallel, or 8 series.

[0057] Referring to FIGS. 12 to 15, conductor pattern examples 1 to 4 will be described. FIGS. 12 to 15 show only the conductor 7, the connection terminal 26, and the coil 25 for convenience of explanation. FIGS. 12 to 15 are views of the conductor 7 seen from below. In FIGS. 12 to 15, the coil 25 is shown by a broken line, and the connection terminal 26 and the conductor 7 are shown by solid lines. In FIGS. 12 to 15, the circled numbers described in the portion surrounded by a plurality of coils 25 indicate the No. of each coil 25. For example, the coil 25 at the center on the upper side of the drawing sheet is the coil 25 of No. 1.

[0058] (Conductor Pattern Example 1) Referring to FIG. 12, the conductor pattern in the case where the motor 1 is a three-phase AC motor, the number of coils 25 is 12, and it is a star connection of 2 series 2 parallel will be described.

[0059] The U-phase coil is composed of coil No. 2, coil No. 3, coil No. 8, and coil No. 9 of 25. These coils 25 are connected by the first conductor 7 to the third conductor 7. The first conductor 7 to the third conductor 7 are voltage lines.

[0060] The first conductor 7 connects coil No. 2 and coil No. 3 of 25. The first conductor 7 is in a short arc shape. The first conductor 7 is disposed in the third groove 65 on the outer periphery. When coil No. 2 and coil No. 3 of 25 are formed by winding a continuous winding, the first conductor 7 can be omitted.

[0061] The second conductor 7 connects coil No. 2 and coil No. 8 of 25. The second conductor 7 is composed of one long arc-shaped conductor 7 and two L-shaped conductors 7. The long arc-shaped conductor 7 is disposed in the first groove 63 on the outer periphery. The two L-shaped conductors 7 are composed of a linear portion extending to the back side of the paper surface and a linear portion extending in the radial direction in FIG. 12. The two L-shaped conductors 7 are disposed in different second grooves 64 and first through holes 66. Specifically, among the L-shaped conductors 7, the linear portion extending to the back side of the paper surface is disposed in the first through hole 66, and the linear portion extending in the radial direction is disposed in the second groove 64. This is the same for other L-shaped conductors 7 in the conductor pattern of this example, and the same for L-shaped conductors 7 in the conductor patterns of other examples described later. The two L-shaped conductors 7 are each connected to both ends of the long arc-shaped conductor 7. For this connection, soldering or welding can be used.

[0062] The third conductor 7 connects coil No. 8 and coil No. 9 of 25. The third conductor 7 is in a short arc shape. The third conductor 7 is disposed in the third groove 65 on the outer periphery. When coil No. 8 and coil No. 9 of 25 are formed by winding a continuous winding, the third conductor 7 can be omitted.

[0063] The V-phase coil is composed of coil 25 of No.4, coil 25 of No.5, coil 25 of No.10, and coil 25 of No.11. These coils 25 are connected by the fourth conductor 7 to the sixth conductor 7. The fourth conductor 7 to the sixth conductor 7 are voltage lines.

[0064] The fourth conductor 7 is connected to coil 25 of No.4 and coil 25 of No.5. The fourth conductor 7 is in the shape of a short arc. The fourth conductor 7 is arranged in the third groove 65 on the outer periphery. When coil 25 of No.4 and coil 25 of No.5 are wound as a continuous winding, the fourth conductor 7 can be omitted.

[0065] The fifth conductor 7 connects coil 25 of No.4 and coil 25 of No.10. The fifth conductor 7 is composed of a long arc-shaped conductor 7 and two L-shaped conductors 7. The long arc-shaped conductor 7 is arranged in the first groove 63 in the middle. The two L-shaped conductors 7 are arranged in different second grooves 64 and first through holes 66. The two L-shaped conductors 7 are respectively connected to both ends of the long arc-shaped conductor 7.

[0066] The sixth conductor 7 connects coil 25 of No.10 and coil 25 of No.11. The sixth conductor 7 is in the shape of a short arc. The sixth conductor 7 is arranged in the third groove 65 on the outer periphery. When coil 25 of No.10 and coil 25 of No.11 are wound as a continuous winding, the sixth conductor 7 can be omitted.

[0067] The W-phase coil is composed of coil 25 of No.6, coil 25 of No.7, coil 25 of No.12, and coil 25 of No.1. These coils 25 are connected by the seventh conductor 7 to the ninth conductor 7. The seventh conductor 7 to the ninth conductor 7 are voltage lines.

[0068] The seventh conductor 7 connects the No. 6 coil 25 and the No. 7 coil 25. The first conductor 7 is in a short arc shape. The first conductor 7 is disposed in the third groove 65 on the outer circumference. When the No. 6 coil 25 and the No. 7 coil 25 are formed by winding a continuous winding, the seventh conductor 7 can be omitted.

[0069] The eighth conductor 7 connects the No. 6 coil 25 and the No. 12 coil 25. The eighth conductor 7 is composed of a long arc-shaped conductor 7 and two L-shaped conductors 7. The long arc-shaped conductor 7 is disposed in the first groove 63 on the inner circumference. The two L-shaped conductors 7 are disposed in different second grooves 64 and the first through hole 66. The two L-shaped conductors 7 are respectively connected to both ends of the long arc-shaped conductor 7.

[0070] The ninth conductor 7 connects the No. 12 coil 25 and the No. 1 coil 25. The ninth conductor 7 is in a short arc shape. The third conductor 7 is disposed in the third groove 65 on the outer circumference. When the No. 12 coil 25 and the No. 1 coil 25 are formed by winding a continuous winding, the ninth conductor 7 can be omitted.

[0071] The No. 1 coil 25, the No. 3 coil 25, the No. 5 coil 25, the No. 7 coil 25, the No. 9 coil 25, and the No. 11 coil 25 are connected by the tenth conductor 7. The tenth conductor 7 is a neutral line. The tenth conductor 7 is composed of one annular conductor 7 and six linear conductors 7. The annular conductor 7 is disposed in the third groove 65 on the inner circumference. The six linear conductors 7 are disposed in the second groove 64 different from any of the above-described L-shaped conductors 7 and in different second grooves 64.

[0072] (Conductor pattern example 2) Referring to FIG. 13, the conductor pattern in the case where the motor 1 is a three-phase AC motor, the number of coils 25 is 12, and it is a 4-parallel star connection will be described.

[0073] The U-phase coil is composed of coil 25 of No. 2, coil 25 of No. 3, coil 25 of No. 8, and coil 25 of No. 9. These coils 25 are connected by a first conductor. The first conductor is a voltage line.

[0074] The first conductor 7 is composed of one long arc-shaped conductor 7 and four L-shaped conductors 7. The long arc-shaped conductor 7 is arranged in the first groove 63 on the outer periphery. The four L-shaped conductors 7 are arranged in different second grooves 64 and first through holes 66. Among the four L-shaped conductors 7, two L-shaped conductors 7 are respectively connected to both ends of the long arc-shaped conductor 7. The remaining two L-shaped conductors 7 are respectively connected to the middle of the long arc-shaped conductor 7.

[0075] The V-phase coil is composed of coil 25 of No. 4, coil 25 of No. 5, coil 25 of No. 10, and coil 25 of No. 11. These coils 25 are connected by a second conductor. The second conductor is a voltage line.

[0076] The second conductor 7 is composed of one long arc-shaped conductor 7 and four L-shaped conductors 7. The long arc-shaped conductor 7 is arranged in the middle first groove 63. The four L-shaped conductors 7 are arranged in different second grooves 64 and first through holes 66. Among the four L-shaped conductors 7, two L-shaped conductors 7 are respectively connected to both ends of the long arc-shaped conductor 7. The remaining two L-shaped conductors 7 are respectively connected to the middle of the long arc-shaped conductor 7.

[0077] The W-phase coil is composed of coil 25 of No. 6, coil 25 of No. 7, coil 25 of No. 12, and coil 25 of No. 1. These coils 25 are connected by a third conductor. The third conductor is a voltage line.

[0078] The third conductor 7 is composed of one long arc-shaped conductor 7 and four L-shaped conductors 7. The long arc-shaped conductor 7 is disposed in the first groove 63 on the inner circumference. The four L-shaped conductors 7 are disposed in different second grooves 64 and first through holes 66. Among the four L-shaped conductors 7, two L-shaped conductors 7 are respectively connected to both ends of the long arc-shaped conductor 7. The remaining two L-shaped conductors 7 are respectively connected to the middle of the long arc-shaped conductor 7.

[0079] The coil No. 1 to the coil No. 12 are connected by the fourth conductor 7. The fourth conductor 7 is a neutral line. The fourth conductor 7 is composed of one annular conductor 7 and twelve linear conductors 7. The annular conductor 7 is disposed in the third groove 65 on the inner circumference. The twelve linear conductors 7 are disposed in different second grooves 64 where none of the above-mentioned L-shaped conductors 7 are disposed.

[0080] (Conductor pattern example 3) Referring to FIG. 14, the conductor pattern in the case where the motor 1 is a three-phase AC motor, the number of coils 25 is twelve, and it is a 2 series 2 parallel delta connection will be described.

[0081] The U-phase coil is composed of the coil No. 11, the coil No. 2, the coil No. 5, and the coil No. 8 of the coil 25. These coils 25 are connected by the first conductor 7. The first conductor 7 is a voltage line.

[0082] The first conductor 7 is composed of one long arc-shaped conductor 7 and four L-shaped conductors 7. The long arc-shaped conductor 7 is disposed in the first groove 63 on the outer circumference. The four L-shaped conductors 7 are disposed in different second grooves 64 and first through holes 66. Among the four L-shaped conductors 7, two L-shaped conductors 7 are respectively connected to both ends of the long arc-shaped conductor 7. The remaining two L-shaped conductors 7 are respectively connected to the middle of the long arc-shaped conductor 7.

[0083] The V-phase coil is composed of coil 25 of No.1, coil 25 of No.4, coil 25 of No.7, and coil 25 of No.10. These coils 25 are connected by the second conductor 7. The second conductor 7 is a voltage line.

[0084] The second conductor 7 is composed of a long arc-shaped conductor 7 and four L-shaped conductors 7. The long arc-shaped conductor 7 is arranged in the middle first groove 63. The four L-shaped conductors 7 are arranged in different second grooves 64 and first through holes 66. Among the four L-shaped conductors 7, two L-shaped conductors 7 are respectively connected to both ends of the long arc-shaped conductor 7. The remaining two L-shaped conductors 7 are respectively connected to the middle of the long arc-shaped conductor 7.

[0085] The W-phase coil is composed of coil 25 of No.3, coil 25 of No.6, coil 25 of No.9, and coil 25 of No.12. These coils 25 are connected by the third conductor 7. The third conductor 7 is a voltage line.

[0086] The third conductor 7 is composed of a long arc-shaped conductor 7 and four L-shaped conductors 7. The long arc-shaped conductor 7 is arranged in the inner first groove 63. The four L-shaped conductors 7 are arranged in different second grooves 64 and first through holes 66. Among the four L-shaped conductors 7, two L-shaped conductors 7 are respectively connected to both ends of the long arc-shaped conductor 7. The remaining two L-shaped conductors 7 are respectively connected to the middle of the long arc-shaped conductor 7.

[0087] The coil No. 2 and the coil No. 3, the coil No. 4 and the coil No. 5, the coil No. 6 and the coil No. 7, the coil No. 8 and the coil No. 9, the coil No. 10 and the coil No. 11, the coil No. 12 and the coil No. 1 are respectively connected by the fourth conductor 7. The fourth conductor 7 is in a short arc shape. The fourth conductor 7 is arranged in the third groove 65 on the outer periphery. If the coil No. 2 and the coil No. 3, the coil No. 4 and the coil No. 5, the coil No. 6 and the coil No. 7, the coil No. 8 and the coil No. 9, the coil No. 10 and the coil No. 11, the coil No. 12 and the coil No. 1 are respectively composed of a continuous winding, the fourth conductor 7 can be omitted.

[0088] (Example of Conductor Pattern 4) Referring to FIG. 15, when the motor 1 is a three-phase AC motor, the number of coils 25 is 12, and it is a 4-parallel delta connection, the conductor pattern will be described.

[0089] The U-phase coil is composed of the coil No. 2 of 25, the coil No. 3 of 25, the coil No. 4 of 25, the coil No. 5 of 25, the coil No. 8 of 25, the coil No. 9 of 25, the coil No. 10 of 25, and the coil No. 11 of 25. These coils 25 are connected by the first conductor 7. The first conductor 7 is a voltage line.

[0090] The first conductor 7 is composed of one long arc-shaped conductor 7 and eight L-shaped conductors 7. The long arc-shaped conductor 7 is arranged in the first groove 63 on the outer periphery. The eight L-shaped conductors 7 are arranged in different second grooves 64 and first through holes 66. Among the eight L-shaped conductors 7, two L-shaped conductors 7 are respectively connected to both ends of the long arc-shaped conductor 7. The remaining six L-shaped conductors 7 are respectively connected to the middle of the long arc-shaped conductor 7.

[0091] The V-phase coil is composed of coil 25 of No.4, coil 25 of No.5, coil 25 of No.6, coil 25 of No.7, coil 25 of No.10, coil 25 of No.11, coil 25 of No.12, and coil 25 of No.1. These coils 25 are connected by the second conductor 7. The second conductor 7 is a voltage line.

[0092] The second conductor 7 is composed of one long arc-shaped conductor 7 and eight L-shaped conductors 7. The long arc-shaped conductor 7 is arranged in the middle first groove 63. The eight L-shaped conductors 7 are arranged in different second grooves 64 and first through holes 66. Among the eight L-shaped conductors 7, two L-shaped conductors 7 are respectively connected to both ends of the long arc-shaped conductor 7. The remaining six L-shaped conductors 7 are respectively connected to the middle of the long arc-shaped conductor 7.

[0093] The W-phase coil is composed of coil 25 of No.6, coil 25 of No.7, coil 25 of No.8, coil 25 of No.9, coil 25 of No.12, coil 25 of No.1, coil 25 of No.2, and coil 25 of No.3. These coils 25 are connected by the third conductor 7. The third conductor 7 is a voltage line.

[0094] The third conductor 7 is composed of one long arc-shaped conductor 7 and eight L-shaped conductors 7. The long arc-shaped conductor 7 is arranged in the inner peripheral first groove 63. The eight L-shaped conductors 7 are arranged in different second grooves 64 and first through holes 66. Among the eight L-shaped conductors 7, two L-shaped conductors 7 are respectively connected to both ends of the long arc-shaped conductor 7. The remaining six L-shaped conductors 7 are respectively connected to the middle of the long arc-shaped conductor 7.

[0095] [Circuit board] As shown in FIGS. 1 and 4, the motor 1 preferably has a circuit board 8. The circuit board 8 is for flowing a current of an appropriate magnitude at an appropriate timing to each coil 25 during the use of the motor 1. The circuit board 8 is attached to the second surface 90s. The shape of the circuit board 8 in this embodiment is semi-annular. A conducting wire 7 and a power source are connected to the circuit board 8.

[0096] [Case] As shown in FIG. 4, the case 9 houses inside it the stator 2, the rotor 3, a part of the shaft 4, the first bearing 51, the second bearing 55, the wiring member 6, the conducting wire 7, the circuit board 8, and the like. As shown in FIGS. 1 and 4, the case 9 in this embodiment has a base portion 90, a first cover portion 91, and a second cover portion 92. The first cover portion 91 and the second cover portion 92 are fixed to the base portion 90 by fastening members 96.

[0097] (Base portion) As shown in FIGS. 1 and 4, the base portion 90 supports the stator 2. The shape of the base portion 90 is disc-shaped as shown in FIG. 2. The base portion 90 has a first surface 90f, a second surface 90s, a protruding portion 90t, a first through hole 90a, a second through hole 90b, and a third through hole 90c.

[0098] As shown in FIG. 4, the stator 2 is disposed on the first surface 90f. The second surface 90s is provided on the side opposite to the first surface 90f. In this embodiment, the second surface 90s faces the wiring member 6.

[0099] The protruding portion 90t is provided between the stator 2 and the first bearing 51. The shape of the protruding portion 90t is, for example, cylindrical. The protruding portion 90t is connected to the first surface 90f. The first bearing 51 is disposed inside the protruding portion 90t.

[0100] As shown in FIG. 4, the above-described fastening member 95 is disposed inside the first through hole 90a shown in FIG. 2. The position of the first through hole 90a and the position of the hole portion of the stator core 21 are in corresponding positions to each other.

[0101] Inside the second through-hole 90b shown in Fig. 2, a fastening member 96 is arranged as shown in Fig. 4. The fastening member 96 fixes the first cover portion 91, the base portion 90, and the second cover portion 92. An example of the fastening member 96 is a screw or a bolt, similar to the fastening member 95. The position of the second through-hole 90b, the position of the hole portion of the first peripheral wall portion 912 described later, and the position of the hole portion of the second peripheral wall portion 922 described later are in corresponding positions to each other.

[0102] Inside the third through-hole 90c shown in Fig. 2, a connection terminal 26 is arranged as shown in Fig. 4. The number of the third through-holes 90c in this embodiment is twice the number of the coils 25. The position of each third through-hole 90c and the position of each end portion of each coil 25 are in corresponding positions to each other.

[0103] (First Cover Portion) As shown in Fig. 4, the first cover portion 91 protects the stator 2 and the rotor 3. The first cover portion 91 has a first plate portion 911 and a first peripheral wall portion 912. The first plate portion 911 and the first peripheral wall portion 912 are integrally formed.

[0104] The first plate portion 911 covers the side of the rotor 3 opposite to the stator 2. The shape of the first plate portion 911 is a disk shape. A concave portion 911a is provided at the center of the first plate portion 911. A through-hole 911b is provided at the bottom of the concave portion 911a. Inside the concave portion 911a, a second bearing 55 and a shaft 4 are arranged. The shaft 4 is inserted into the through-hole 911b.

[0105] The shape of the first circumferential wall portion 912 is cylindrical. The first circumferential wall portion 912 surrounds the outer circumferences of the stator 2 and the rotor 3. As shown in FIG. 4, a plurality of mounting portions 912a are provided on the inner circumferential surface of the first circumferential wall portion 912. The number of the mounting portions 912a is four in this embodiment. The four mounting portions 912a are provided at intervals along the circumferential direction of the first circumferential wall portion 912. Each mounting portion 912a is provided over the entire axial length of the first circumferential wall portion 912. The end surface of each mounting portion 912a is in contact with the base portion 90. A hole portion is provided in each mounting portion 912a. A fastening member 96 is provided in each hole portion.

[0106] (Second Cover Portion) The second cover portion 92 protects the wiring member 6 and the circuit board 8. The second cover portion 92 includes a second plate portion 921 and a second circumferential wall portion 922. The second plate portion 921 and the second circumferential wall portion 922 are integrally formed.

[0107] The second plate portion 921 covers the side of the circuit board 8 opposite to the wiring member 6. The shape of the second plate portion 921 is disk-shaped. A through hole 921a is provided at the center of the second plate portion 921.

[0108] The shape of the second circumferential wall portion 922 is cylindrical. The second circumferential wall portion 922 surrounds the outer circumferences of the wiring member 6 and the circuit board 8. As shown in FIGS. 1 and 4, a plurality of mounting portions 922a are provided on the inner circumferential surface of the second circumferential wall portion 922. The number of the mounting portions 922a is four in this embodiment. The four mounting portions 922a are provided at intervals along the circumferential direction of the second circumferential wall portion 922. Each mounting portion 922a is provided over the entire axial length of the second circumferential wall portion 922. The end surface of each mounting portion 922a is in contact with the base portion 90. A through hole is provided in each mounting portion 922a. A fastening member 96 is provided in each through hole.

[0109] 〔Effects of Embodiment 1〕 The motor 1 of this embodiment can be manufactured by performing the following steps a to c by including the wiring member 6. In step a, a plurality of coils 25 that are not connected to each other and are independent of each other are prepared. In step b, a wiring member 6 is prepared in which the conductive wire 7 is arranged in the first groove 63, the second groove 64, and the first through hole 66 so as to form a predetermined conductive wire pattern. Step c is to connect the conductive wire 7 arranged in the wiring member 6 and the plurality of coils 25. By using the wiring member 6, the plurality of coils 25 can be connected to each other by the conductive wire 7. Therefore, in the manufacturing process of the motor, it is not necessary to form the plurality of coils 25 by winding a continuous winding. Since the wiring member 6 includes a plurality of first grooves 63, a plurality of second grooves 64, and a plurality of first through holes 66, it can correspond to various conductive wire patterns. That is, the conductive wire 7 arranged in the wiring member 6 can be arranged at a position corresponding to the end of the winding. Therefore, in the manufacturing process of the motor, it is not necessary to wind the winding so that the positions of the ends of the windings in the plurality of coils 25 are displaced. Therefore, in the manufacturing process of the motor, it is easy to manufacture the plurality of coils 25. Therefore, the motor 1 is excellent in productivity.

[0110] Since the wiring member 6 of this embodiment can correspond to various conductive wire patterns by including a plurality of first grooves 63, a plurality of second grooves 64, and a plurality of first through holes 66, it has high versatility. In particular, since the wiring member 6 includes the third groove 65, it can correspond not only to the delta connection shown in FIGS. 14 and 15 but also to the star connection shown in FIGS. 12 and 13. Therefore, the wiring member 6 of this embodiment has particularly high versatility.

[0111] 《Embodiment 2》 〔Motor〕 Referring to FIG. 17, the motor 1 of Embodiment 2 will be described. FIG. 17 shows only the stator 2, the connection terminal 26, the wiring member 6, and the conductive wire 7 for convenience of explanation. The motor 1 of this embodiment is different from the motor of Embodiment 1 mainly in that the shape of the wiring member 6 is cylindrical. The following description will focus on the differences from Embodiment 1. The description of the same configuration as in Embodiment 1 may be omitted.

[0112] [Wiring Member] In this embodiment, the wiring member 6 is a cylindrical body surrounding the outer periphery of the stator 2. Different from this embodiment, the wiring member 6 may be disposed on the inner periphery of the stator 2. The wiring member 6 and the stator 2 are coaxially arranged. The first surface 61 is the surface on the side opposite to the plurality of coils 25. That is, the first surface 61 is the outer peripheral surface of the wiring member 6. The second surface 62 is the surface facing the plurality of coils 25. That is, the second surface 62 is the inner peripheral surface of the wiring member 6. In this embodiment, the number of the first grooves 63 is four. The first grooves 63 are provided in parallel in the axial direction of the wiring member 6. The second grooves 64 are provided in parallel in the circumferential direction of the wiring member 6. Each second groove 64 is provided linearly along the axial direction of the wiring member 6. The wiring member 6 of this embodiment does not include a third groove.

[0113] 〔Effects of Embodiment 2〕 Similar to the motor 1 of Embodiment 1, the motor 1 of this embodiment is excellent in productivity. Although the wiring member 6 of this embodiment does not include a third groove, since the number of the first grooves 63 is one more than the number of phases of the motor 1, similar to the wiring member 6 of Embodiment 1, it can support not only delta connection but also star connection. Therefore, the wiring member 6 of this embodiment has particularly high versatility, similar to the wiring member 6 of Embodiment 1.

[0114] The present invention is not limited to these examples, but is shown by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

[0115] The base portion may be constituted by a wiring member. In that case, the number of parts is reduced.

[0116] The yoke may be constituted by a plurality of yoke pieces in the shape of a sector plate. The number of teeth connected to each yoke piece may be one or more.

[0117] The motor may be an axial-gap motor of the double-stator single-rotor type. The double-stator single-rotor type refers to a motor with two stators and one rotor. In the double-stator single-rotor type, one rotor is assembled so as to be sandwiched between two stators. The motor may be an axial-gap motor of the single-stator double-rotor type. The single-stator double-rotor type refers to a motor with one stator and two rotors. In the single-stator double-rotor type, one stator is assembled so as to be sandwiched between two rotors. Further, the motor may be a radial-gap motor.

Explanation of Signs

[0118] 1 Motor 2 Stator 21 Stator Core, 22 Yoke, 23 Teeth 25 Coil, 26 Connection Terminal, 28 Insulating Member 3 Rotor, 31 Rotor Body, 35 Magnet 4 Shaft 51 First Bearing, 55 Second Bearing 6 Wiring Member, 60 Body Portion, 61 First Surface, 62 Second Surface 63 First Groove, 64 Second Groove, 65 Third Groove 66 First Through-Hole, 67 Second Through-Hole 68 Mounting Portion, 69 Insulating Member 7 Conductive Wire, 8 Circuit Board 9 Case, 90 Base Portion 90f First Surface, 90s Second Surface, 90t Protrusion 90a First Through-Hole, 90b Second Through-Hole, 90c Third Through-Hole 91 First Cover Portion 911 First Plate Portion, 911a Concave Portion, 911b Through-Hole 912 First Peripheral Wall Portion, 912a Mounting Portion 92 Second Cover Portion 921 Second Plate Portion, 921a Through-Hole, 922 Second Peripheral Wall Portion, 922a Mounting Portion 95 and 96 fastening members

Claims

1. A plurality of coils arranged on a circumference centered on a rotating shaft, A wiring member arranged coaxially with the rotating shaft and composed of a conductor, A plurality of conducting wires, An insulating member provided between the wiring member and each of the plurality of conducting wires, comprising: The wiring member, A first surface, A second surface which is the surface on the opposite side of the first surface, A plurality of through holes connecting the first surface and the second surface, having: One of the first surface or the second surface is a surface facing the plurality of coils, The first surface includes a plurality of first grooves having an annular shape surrounding the rotating shaft, The second surface includes a plurality of second grooves in a direction intersecting the plurality of first grooves in a plan view of the first surface, Each of the plurality of through holes is provided at each intersection of the plurality of first grooves and the plurality of second grooves, The plurality of conducting wires are arranged in the plurality of first grooves, the plurality of second grooves, and the plurality of through holes, A motor.

2. The number of the plurality of first grooves is equal to or greater than the number of phases of the motor, The number of the plurality of second grooves is a number that is twice or more the number of the coils. The motor according to claim 1.

3. The shape of the wiring member is a disk shape centered on the rotating shaft, The plurality of first grooves are provided concentrically, The plurality of second grooves are provided radially. The motor according to claim 1 or claim 2.

4. The shape of the wiring member is a cylindrical shape centered on the rotating shaft, The plurality of first grooves are provided in parallel in the axial direction of the wiring member, The plurality of second grooves are provided in parallel in the circumferential direction of the wiring member. The motor according to claim 1 or claim 2.

5. A main body portion in which a plurality of conducting wires for connecting a plurality of coils provided in the motor are arranged, and an insulating member is provided between each of the plurality of conducting wires, The main body portion is composed of a conductor, A first surface, A second surface which is the surface on the opposite side of the first surface, A plurality of through holes connecting the first surface and the second surface, having: The first surface includes a plurality of first grooves having an annular shape surrounding the center of gravity of the first surface, The second surface includes a plurality of second grooves in a direction intersecting the plurality of first grooves in a plan view of the first surface, Each of the plurality of through holes is provided at each intersection of the plurality of first grooves and the plurality of second grooves, The plurality of first grooves, the plurality of second grooves, and the plurality of through holes are configured such that the plurality of conducting wires are arranged. Wiring member.

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