WO2022269672A1

WO2022269672A1 - Motor and wiring member

Info

Publication number: WO2022269672A1
Application number: PCT/JP2021/023364
Authority: WO
Inventors: 勇太榎園; 大地東; 達哉齋藤
Original assignee: 住友電気工業株式会社; 住友電工焼結合金株式会社
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2022-12-29
Also published as: JPWO2022269672A1

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

Motor and wiring member

The present disclosure relates to motors and wiring members.

Patent Document 1 discloses an axial gap type motor. The electric motor of Patent Document 1 is a three-phase AC motor. An electric motor has a stator and a rotor. The stator and rotor face each other in the axial direction of the rotor.

The stator has an iron core and 12 coils. The iron core has a back yoke and 12 cores. The shape of the back yoke is an annular plate. The 12 cores are arranged at regular intervals in the circumferential direction of the back yoke. Each coil is arranged on the outer circumference of each core. The 12 coils constitute one coil group with four coils each. The three coil groups are a U-phase coil group, a V-phase coil group, and a W-phase coil group, respectively. The four coils forming each phase coil group are formed by winding a continuous coil wire. The four coils forming each phase coil group are spaced apart from each other in the rotation direction of the rotor.

In the coil group of each phase, the coils adjacent to each other in the rotation direction are connected by a wire made up of 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 wires of the coil groups of different phases do not interfere with each other. Specifically, the winding ends of the V-phase coil group are located radially inward from the winding ends of the U-phase coil group. The winding ends of the W-phase coil group are located radially inward from the winding ends of the V-phase coil group.

JP 2018-166353 A

The motor of the present disclosure is
a plurality of coils arranged on a circumference around the rotation axis;
a wiring member arranged coaxially with the rotating shaft;
a plurality of conductors;
The wiring member is
front page and
a second surface opposite to the first surface;
a plurality of through holes connecting the first surface and the second surface,
one of the first surface and the second surface is a surface facing the plurality of coils;
The first surface comprises 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 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.

The wiring member of the present disclosure is
comprising a main body in which a plurality of conductors for connecting a plurality of coils provided in the motor are arranged,
The main body is
front page and
a second surface opposite to the first surface;
a plurality of through holes connecting the first surface and the second surface,
The first surface comprises 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 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.

FIG. 1 is an exploded perspective view showing an outline of a motor according to Embodiment 1. FIG. FIG. 2 is an exploded perspective view schematically showing a rotor, a stator, and a base provided in the motor according to Embodiment 1. FIG. FIG. 3 is a perspective view showing an outline of an exploded state of wiring members and conducting wires provided in the motor according to the first embodiment. FIG. 4 is a cross-sectional view showing the outline of the motor according to the first embodiment. FIG. 5 is an explanatory diagram for explaining the cutting line of the cross-sectional view of FIG. 6 is a plan view schematically showing a first surface of a wiring member provided in the motor according to Embodiment 1. FIG. 7 is a plan view schematically showing a second surface of a wiring member provided in the motor according to Embodiment 1. FIG. FIG. 8 is a circuit diagram showing an example of star connection. FIG. 9 is a circuit diagram showing another example of star connection. FIG. 10 is a circuit diagram showing an example of delta connection. FIG. 11 is a circuit diagram showing another example of delta connection. 12 is a bottom view for explaining an example of a conductor pattern in the motor according to Embodiment 1. FIG. 13 is a bottom view for explaining another example of the conductor pattern in the motor according to the first embodiment. FIG. 14 is a bottom view illustrating another example of the conductor pattern in the motor according to the first embodiment. FIG. 15 is a bottom view illustrating still another example of the conductor pattern in the motor according to the first embodiment; FIG. 16 is a cross-sectional view illustrating an insulating member between the wiring member and the conducting wire according to the first embodiment; FIG. 17 is a schematic perspective view of a motor according to Embodiment 2. FIG.

[Problems to be Solved by the Present Disclosure]
In Patent Literature 1, since a plurality of coils constituting each phase coil group are formed by winding a continuous coil wire, the manufacture of each phase coil group tends to be complicated. In particular, since it is necessary to wind the coil wire so that the positions of the winding ends are shifted in the radial direction of the stator, the production of the coil groups for each phase tends to be complicated. Therefore, the productivity of the motor is lowered. Moreover, when the type of connection is star connection or delta connection, and 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. There is Therefore, the technique of Patent Document 1 cannot be applied to various connection types and connection patterns, and has low versatility.

One of the purposes of the present disclosure is to provide a motor with excellent productivity. Another object of the present disclosure is to provide a wiring member that has high versatility and can improve the productivity of motors.

[Effect 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 motor productivity.

<<Description of Embodiments of the Present Disclosure>>
First, the embodiments of the present disclosure are listed and described.

(1) A motor according to one aspect of the present disclosure includes
a plurality of coils arranged on a circumference around the rotation axis;
a wiring member arranged coaxially with the rotating shaft;
a plurality of conductors;
The wiring member is
front page and
a second surface opposite to the first surface;
a plurality of through holes connecting the first surface and the second surface,
one of the first surface and the second surface is a surface facing the plurality of coils;
The first surface comprises 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 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.

The above motor has excellent productivity. The reason is as follows.

By providing the wiring member, the motor can be manufactured by performing the following steps a to c. In step a, a plurality of coils that are not connected to each other and that are independent of each other are prepared. In step b, a wiring member is prepared in which conductors are arranged in the first groove, the second groove, and the through holes so as to form a predetermined conductor pattern. A step c connects the conducting wire arranged on the wiring member and the plurality of coils.

By using wiring members, it is possible to connect multiple coils with conductors. Therefore, in the manufacturing process of the motor, it is not necessary to form a plurality of coils by winding a series of windings. By providing the wiring member with a plurality of first grooves, a plurality of second grooves, and a plurality of through holes, various conductor patterns can be accommodated. That is, the conductors arranged on the wiring member can be arranged at positions corresponding to the ends of the windings. Therefore, in the manufacturing process of the motor, it is not necessary to wind the windings so that the ends of the windings of the plurality of coils are out of alignment. Therefore, it is easy to manufacture a plurality of coils in the manufacturing process of the motor.

(2) As one form of the motor,
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 preferably twice or more the number of the coils.

In the above motor, the conductors for each phase can be arranged in different first grooves, second grooves, and through holes. Therefore, it is easy to perform the work of arranging the conductors with respect to the wiring member. Therefore, the motor is excellent in productivity.

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

Since the plurality of first grooves are provided concentrically, each first groove can be easily aligned in the circumferential direction of the plurality of coils. Since the plurality of second grooves are radially provided, the positions of the second grooves can be easily matched to the ends of the coils. Therefore, in the motor, it is easy to connect the conductors and the coils.

(4) As one form of the motor (1) or (2) above,
The shape of the wiring member is a cylindrical shape centered on the rotation axis,
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.

Since the plurality of first grooves are provided in parallel in the axial direction of the cylindrical wiring member, they are annular. Therefore, each first groove can be easily formed 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, the positions of the second grooves can easily correspond to the ends of the coils. Therefore, in the motor, it is easy to connect the conductors and the coils.

(5) As one form of the motor,
The wiring member is preferably an insulator.

The above motor does not require an insulating member between the wiring member and the conductor, so it is excellent in productivity.

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

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 through the wiring member. The motor can insulate the wiring member and the conducting wire by having the insulating member.

(7) A wiring member according to an aspect of the present disclosure,
comprising a main body in which a plurality of conductors for connecting a plurality of coils provided in the motor are arranged,
The main body is
front page and
a second surface opposite to the first surface;
a plurality of through holes connecting the first surface and the second surface,
The first surface comprises 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 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.

The wiring member has a plurality of first grooves, a plurality of second grooves, and a plurality of through holes, so that it can correspond 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 series of windings. This is because the windings do not need to be wound so that their positions are shifted.

<<Details of the embodiment of the present disclosure>>
Details of embodiments of the present disclosure are described below. The same reference numerals in the drawings indicate the same names.

<<Embodiment 1>>
〔motor〕
A motor 1 of Embodiment 1 will be described with reference to FIGS. 1 to 16 . 1 and 4 exemplify a single-stator/single-rotor axial gap motor as the motor 1 . A single-stator/single-rotor axial gap motor is an axial gap motor in which the number of stators 2 and the number of rotors 3 are one each. An axial gap motor is a motor in which a stator 2 and a rotor 3 face each other with a gap in the axial direction of the rotating shaft of the rotor 3 . The stator 2 and rotor 3 are arranged coaxially with the rotating shaft. FIG. 4 is a cross-sectional view of the motor 1 cut along a plane parallel to the axial direction of the shaft 4 along the line IV-IV shown in FIG. FIG. 5 is a plan view of the base portion 90, which will be described later, from the side of the wiring member 6, which will be described later.

The motor 1 has a plurality of coils 25, as shown in FIGS. A plurality of coils 25 are arranged on a circumference around the rotation axis of the rotor 3 . Each coil 25 is arranged on the outer periphery of teeth 23 to be described later.
One of the features of the motor 1 of this embodiment is that it satisfies the following requirement (a) and requirement (c).
(a) As shown in FIGS. 3 and 4, the motor 1 includes a wiring member 6 and a plurality of conducting wires 7 arranged coaxially with the rotating shaft.
(b) 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, as shown in FIGS.
(c) The plurality of conducting 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, as shown in FIGS.
Each configuration will be described in detail below. In the following description, regarding the rotor 3 side and the stator 2 side of the rotating shaft, 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 match the up and down of the motor 1 in use.

[Rotor]
The rotor 3 comprises a rotor body 31 and at least one magnet 35, as shown in FIG.

(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 . A shaft 4 is a rotating shaft of the rotor 3 . The shaft 4 is composed of a solid round bar-shaped body. The first bearing 51 and the second bearing 55 rotatably support the shaft 4 . The first bearing 51 is arranged inside a projecting portion 90t, which will be described later. The second bearing 55 is arranged inside a recess 911a, which will be described later. The rotor body 31 is an annular member. The rotor body 31 is provided with a through hole in the center. A shaft 4 is provided in this through hole. In this embodiment, the rotor body 31 and the shaft 4 are combined by press-fitting the shaft 4 into the through hole.

(magnet)
Magnet 35 is fixed to 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 magnets 35 is an annular plate. The magnet 35 has S poles and N poles 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 regular 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 rotating shaft 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 magnet 35 repeats attraction and repulsion with respect to each tooth 23 by the rotating magnetic field generated by the stator 2 , thereby rotating the rotor 3 .

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

(stator core)
The stator core 21 has 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. Each tooth 23 is arranged at predetermined intervals 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 selected as appropriate. The shape of each tooth 23 is prismatic or cylindrical. A known configuration can be used for the stator core 21 . Each of the teeth 23 and the yoke 22 of this embodiment are formed as an integral compacted body. A known material can be used for the constituent material of the powder compact.

The stator core 21 has a hole as shown in FIG. A fastening member 95 is provided in this hole. The fastening member 95 fixes the stator core 21 to the base portion 90 . The fastening member 95 suppresses misalignment between the stator 2 and the base portion 90 . An example of the fastening member 95 is a screw or bolt. The hole is 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 .

(coil)
Each coil 25 has a tubular portion and a pair of ends, as shown in FIGS. In FIGS. 1 and 2, only the cylindrical portion of the coil 25 is shown, and illustration of the pair of end portions is omitted. Each cylindrical portion is configured by spirally winding independent windings. Each tubular portion is arranged on the outer circumference 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 edgewise wound coil. A coated rectangular copper wire is used for the winding of the coil 25 . The number of coils 25 is the same as the number of teeth 23, which is 12 in this embodiment. In this embodiment, each end of each coil 25 is arranged on the outer peripheral side of the stator 2 . Unlike this embodiment, each end of each coil 25 may be arranged on the inner peripheral side of the stator 2 .

(Connecting terminal)
In this embodiment, connection terminals 26 are connected to each end of each coil 25, as shown in FIGS. The connection terminal 26 connects each end to a conductor 7, which will be described later. Soldering or welding can be used to connect the connection terminal 26 to each end and to connect the connection terminal 26 and the lead wire 7 . An example of the material of the connection terminal 26 is the same material as the coil 25 . The number of connection terminals 26 in this embodiment is twice the number of coils 25 . In this embodiment, each connection terminal 26 is shaped like a round bar. The shape of each connection terminal 26 is not limited to the shape of this embodiment, and can be selected as appropriate. Each connection terminal 26 is inserted through the second through hole of the base portion 90, as shown in FIG. 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 unnecessary. Unlike the present embodiment, the connecting terminals 26 are not required when each end is directly connected to the conducting wire 7 .

[Wiring member]
A plurality of conducting wires 7 are arranged on the wiring member 6 as shown in FIGS. A chain double-dashed line shown in FIG. 3 indicates a connecting portion between the conductor wire 7 on the upper side of the paper surface of the wiring member 6 and the conductor wire 7 on the lower side of the paper surface. As shown in FIGS. 6 and 7, the wiring member 6 of this embodiment includes an annular body portion 60 and a mounting portion 68. As shown in FIGS. The shape of the main body part 60 of this embodiment is disc-shaped. The center of the body portion 60 is positioned on the rotation axis. The center of the body portion 60 is the center of the enveloping circle of the body portion 60 . The attachment portion 68 protrudes radially outward of the main body portion 60 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 through the through hole. This fastening member fixes the mounting portion 68 to the second surface 90s of the base portion 90 shown in FIG.

The body portion 60 has a first surface 61 shown in FIG. 6 and a second surface 62 shown in FIG. Moreover, the body part 60 has a plurality of first through holes 66 and a plurality of second through holes 67 as shown in FIGS. 6 and 7 . In this embodiment, the first surface 61 is a surface facing the plurality of coils 25, as shown in FIGS. In this embodiment, the second surface 62 is the surface opposite to the first surface 61 . The second surface 62 of this embodiment faces a second plate portion 921 of the second cover portion 92, which will be described later. Unlike 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 .

As shown in FIG. 6 , the first surface 61 has a plurality of first grooves 63 . The shape of each first groove 63 is annular. Each first groove 63 is formed to surround the rotating shaft. In this embodiment, each first groove 63 has an annular shape. The number of first grooves 63 is equal to or greater than the number of phases of motor 1 . The number of phases of the motor 1 is the number of phases of the driving power source. The number of phases of the motor 1 is the number of phases of current supplied to the plurality of coils 25 . For example, when the motor 1 is a three-phase AC motor, the number of the first grooves 63 is three or more. Specifically, when the motor 1 is a three-phase AC motor, the number of the first grooves 63 is three or four.

In this embodiment, the number of first grooves 63 is three. The three annular first grooves 63 are provided concentrically. The center of each first groove 63 is the same as the center of the body portion 60 . Of the three first grooves 63, from the first groove 63 on the outer peripheral side of the body portion 60 toward the first groove 63 on the inner peripheral side, the first groove 63 on the outer peripheral side, the first groove 63 in the middle, the inner It is sometimes referred to as a circumferential first groove 63 . Conductive wires 7 of different phases are not arranged in each of the first groove 63 on the outer circumference, the first groove 63 on the middle, and the first groove 63 on the inner circumference.

As shown in FIG. 7 , the second surface 62 has a plurality of second grooves 64 . The plurality of second grooves 64 are grooves extending in a direction crossing the first grooves 63 . Intersecting means that the first groove 63 and the second groove 64 intersect in plan view of the first surface 61 . The number of second grooves 64 is at least twice the number of coils 25 . Since the number of coils 25 in this embodiment is 12 as described above, the number of second grooves 64 in this embodiment is 24 or more.

The number of second grooves 64 in this embodiment is 24. The plurality of second grooves 64 of this embodiment are provided radially along the radial direction from the inner peripheral side to the outer peripheral side of the body portion 60 . The shape of each second groove 64 is linear. A first end of each second groove 64 is located on the inner peripheral side of the inner peripheral first groove 63 . A second end portion of each second groove 64 is positioned closer to the outer circumference than the first groove 63 on the outer circumference. Conductive wires 7 of different phases are not arranged in each second groove 64 .

The second surface 62 may further comprise at least one third groove 65. Like the first groove 63, the shape of the third groove 65 is annular. The third groove 65 is formed so as to surround the rotating shaft.

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 is provided closer to the outer circumference than the first groove 63 on the outer circumference, and the second third groove 65 is provided on the inner circumference. It is preferable that it be provided on the inner peripheral side of the first groove 63 . The first third groove 65 preferably connects the second ends of the second grooves 64 . The second third groove 65 preferably connects the first ends of the second grooves 64 .

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 AC 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 grooves 65 are preferably provided on the outer peripheral side of the first grooves 63 on the outer periphery, or on the inner peripheral side of the first grooves 63 on the inner periphery. . The third groove 65 preferably connects the first ends of the second grooves 64 or the second ends of the second grooves 64 .

In this embodiment, the second surface 62 has two third grooves 65. Each third groove 65 has 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 body portion 60 . The first third groove 65 is provided closer to the outer circumference than the first groove 63 on the outer circumference. The first third groove 65 connects the second ends of the second grooves 64 . The second third groove 65 is provided on the inner peripheral side of the inner peripheral first groove 63 . A second third groove 65 connects the first ends of the second grooves 64 . The first third groove 65 is sometimes called the inner third groove 65 and the second third groove 65 is sometimes called the outer third groove 65 .

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 first through holes 66 is the product of the number of first grooves 63 and the number of second grooves 64 . In this embodiment, the number of first grooves 63 is three and the number of second grooves 64 is twenty-four, so the number of first through holes 66 is seventy-two. Conductive wires 7 of different phases are not arranged in each first through hole 66 .

Each of the plurality of second through-holes 67 is connected to the outer peripheral third groove 65 . The connection terminals 26 are inserted through the second through holes 67 as shown in FIG. The number of second through holes 67 in this embodiment is twice the number of coils 25 . Unlike this embodiment, each second through-hole 67 may be connected to the third groove 65 on the inner periphery. 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 .

The wiring member 6 is composed 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 conductor 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, heat is easily dissipated from the stator 2 via 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 conductor 7 having the insulating member 69 is arranged in the first groove 63 . The material of the conductor is non-magnetic metal. Examples of non-magnetic metals are aluminum, aluminum alloys, titanium, titanium alloys, and the like. The insulating member 69 may be provided at least at a portion where the conductor 7 and the wiring member 6 are in contact. The insulating member 69 can be formed by coating at least one of the conducting wire 7 and the wiring member 6 with an insulating coating.

[Conducting wire]
Conductors 7 shown in FIG. 3 supply current to each coil 25 shown in FIG. The number of conductors 7 is plural. The number of conductors 7 can be appropriately selected depending on the type of connection and the pattern of connection. The conducting wire 7 is arranged in the first groove 63, the second groove 64, and the first through hole 66, as shown in FIG. The conducting wire 7 is also arranged in the third groove 65 depending on the type of connection and the pattern of connection. 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 material as that of the coil 25 . The conducting wire 7 can be produced by cutting a metal plate into a predetermined shape. In addition, the conductor wire 7 may be a bare round wire or flat wire without insulation, a round wire or flat wire with insulation, a litz wire, or the like, and is not particularly limited.

When the motor 1 is a three-phase AC motor, the types of connection include star connection and delta connection. 8 and 9 show circuit diagrams of star connections. 10 and 11 show circuit diagrams of delta connections.

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 for each of the U-phase, V-phase, and W-phase is 2 series 2 parallel, 4 in parallel or 4 in series. 2 series and 2 parallel means that two serially connected coils 25 are connected in parallel as shown in the star connection circuit diagram of FIG. 8 or the delta connection circuit diagram of FIG. 4 parallel means that four coils 25 are connected in parallel as shown in the star connection circuit diagram of FIG. 9 or the delta connection circuit diagram of FIG. Although not shown, 4-series means that four coils 25 are connected in series.

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 for 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 for each of the U-phase, V-phase, and W-phase is 8 parallel, 2-series 4-parallel, 4-series 2-parallel, or 8-series.

Conductor pattern example 1 to conductor pattern example 4 will be described with reference to FIGS. 12 to 15 . 12 to 15 show only the conductor 7, the connection terminal 26 and the coil 25 for convenience of explanation. 12 to 15 are diagrams of the conductor 7 viewed from below. 12 to 15, the coil 25 is indicated by broken lines, and the connection terminals 26 and the conducting wires 7 are indicated by solid lines. In FIGS. 12 to 15 , circled numbers described in locations surrounded by a plurality of coils 25 indicate numbers of the respective coils 25 . indicates For example, the central coil 25 on the upper side of the page is No. 1 coil 25 .

(Conductive wire pattern example 1)
With reference 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 twelve, and the star connection is two series and two parallel.

　The U-phase coil is No. 2 coil 25 and No. 3 coil 25 and No. 8 coil 25 and No. 9 coils 25 . These coils 25 are connected by a first conductor 7 to a third conductor 7 . The first conductor 7 to the third conductor 7 are voltage lines.

The first conductor 7 is No. 2 coil 25 and No. 3 and the coil 25 of No. 3 are connected. The first conductor 7 is of short arc shape. The first conducting wire 7 is arranged in a third groove 65 on the outer periphery. No. 2 coil 25 and No. If the coils 25 of 3 are formed by winding a series of windings, the first conducting wire 7 can be omitted.

The second conductor 7 is No. 2 coil 25 and No. 8 coil 25 is connected. The second conductor 7 is composed of one long arc-shaped conductor 7 and two L-shaped conductors 7 . A long arc-shaped conductor 7 is arranged in a first groove 63 on the outer periphery. In FIG. 12, 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. The two L-shaped conducting wires 7 are arranged in the second grooves 64 and the first through holes 66 which are different from each other. Specifically, of the L-shaped conducting wire 7 , a linear portion extending to the back side of the paper surface is arranged in the first through hole 66 , and a linear portion extending in the radial direction is arranged in the second groove 64 . there is This is the same for other L-shaped conductors 7 in the conductor pattern of this example, and the same applies to L-shaped conductors 7 in other conductor patterns described later. Two L-shaped conductors 7 are connected to both ends of a long arc-shaped conductor 7 respectively. Soldering or welding can be used for this connection.

The third conductor 7 is No. 8 coil 25 and No. 9 and the coil 25 are connected. The third conductor 7 has a short arc shape. The third conductor 7 is arranged in a third groove 65 on the outer circumference. No. 8 coil 25 and No. If the coil 25 of 9 is constructed by winding a series of windings, the third conductor 7 can be omitted.

The V-phase coil is No. 4 coil 25 and No. 5 coil 25 and No. 10 coil 25 and No. 11 coils 25 . These coils 25 are connected by fourth to sixth conductors 7 . The fourth conductor 7 to the sixth conductor 7 are voltage lines.

The fourth conductor 7 is No. 4 coil 25 and No. 5 coil 25 is connected. The fourth conductor 7 is of short arc shape. The fourth conducting wire 7 is arranged in the third groove 65 on the outer periphery. No. 4 coil 25 and No. If the coil 25 of 5 is constructed by winding a series of windings, the fourth conductor 7 can be omitted.

The fifth lead wire 7 is No. 4 coil 25 and No. 10 coils 25 are connected. The fifth conductor 7 is composed of a long arc-shaped conductor 7 and two L-shaped conductors 7 . A long arc-shaped conductor 7 is arranged in the middle first groove 63 . The two L-shaped conducting wires 7 are arranged in the second grooves 64 and the first through holes 66 which are different from each other. Two L-shaped conductors 7 are connected to both ends of a long arc-shaped conductor 7 respectively.

The sixth conductor 7 is No. 10 coil 25 and No. 11 coils 25 are connected. The sixth conductor 7 has a short arc shape. The sixth conductor 7 is arranged in a third groove 65 on the outer circumference. No. 10 coil 25 and No. If the 11 coils 25 are formed by winding a series of windings, the sixth conductor 7 can be omitted.

The W-phase coil is No. 6 coil 25 and No. 7 coil 25 and No. 12 coils 25 and No. 1 coil 25 . These coils 25 are connected by a seventh conductor 7 to a ninth conductor 7 . The seventh conductor 7 to the ninth conductor 7 are voltage lines.

The seventh conductor 7 is No. 6 coil 25 and No. 7 and the coil 25 are connected. The first conductor 7 is of short arc shape. The first conducting wire 7 is arranged in a third groove 65 on the outer circumference. No. 6 coil 25 and No. If the coil 25 of 7 is formed by winding a series of windings, the seventh conductor 7 can be omitted.

The eighth conductor 7 is No. 6 coil 25 and No. 12 coils 25 are connected. The eighth conductor 7 is composed of a long arc-shaped conductor 7 and two L-shaped conductors 7 . A long arc-shaped conducting wire 7 is arranged in a first groove 63 on the inner periphery. The two L-shaped conducting wires 7 are arranged in the second grooves 64 and the first through holes 66 which are different from each other. Two L-shaped conductors 7 are connected to both ends of a long arc-shaped conductor 7 respectively.

The ninth conductor 7 is No. 12 coils 25 and No. 1 coil 25 is connected. The ninth conductor 7 is a short arc. The third conductor 7 is arranged in a third groove 65 on the outer periphery. No. 12 coils 25 and No. If one coil 25 is formed by winding a series of windings, the ninth conductor 7 can be omitted.

　No. 1 coil 25 and No. 3 coil 25 and No. 5 coil 25 and No. 7 coil 25 and No. 9 coil 25 and No. 11 coils 25 are connected by a tenth conductor 7 . A tenth conductor 7 is a neutral conductor. The tenth conducting wire 7 is composed of one annular conducting wire 7 and six linear conducting wires 7 . The annular conducting wire 7 is arranged in the third groove 65 on the inner periphery. The six linear conductors 7 are arranged in second grooves 64 different from any of the L-shaped conductors 7 described above and in second grooves 64 different from each other.

(Conductive wire pattern example 2)
Referring to FIG. 13, a conductor pattern will be described in the case where motor 1 is a three-phase AC motor, the number of coils 25 is twelve, and four parallel star connections are used.

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

The first conductor 7 is composed of one long arc-shaped conductor 7 and four L-shaped conductors 7 . A long arc-shaped conductor 7 is arranged in a first groove 63 on the outer periphery. The four L-shaped conductors 7 are arranged in the second grooves 64 and the first through holes 66 that are different from each other. Of the four L-shaped conductors 7, two L-shaped conductors 7 are connected to both ends of a long arc-shaped conductor 7, respectively. The remaining two L-shaped conductors 7 are connected in the middle of the long arc-shaped conductors 7, respectively.

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

The second conductor 7 is composed of one long arc-shaped conductor 7 and four L-shaped conductors 7 . A long arc-shaped conductor 7 is arranged in the middle first groove 63 . The four L-shaped conductors 7 are arranged in the second grooves 64 and the first through holes 66 that are different from each other. Of the four L-shaped conductors 7, two L-shaped conductors 7 are connected to both ends of a long arc-shaped conductor 7, respectively. The remaining two L-shaped conductors 7 are connected in the middle of the long arc-shaped conductors 7, respectively.

The W-phase coil is No. 6 coils 25 , 7 coils 25 , 12

coils

25 and 1 coil 25 . These coils 25 are connected by a third conductor. The third conductor is the voltage line.

The third conductor 7 is composed of one long arc-shaped conductor 7 and four L-shaped conductors 7. A long arc-shaped conducting wire 7 is arranged in a first groove 63 on the inner periphery. The four L-shaped conductors 7 are arranged in the second grooves 64 and the first through holes 66 that are different from each other. Of the four L-shaped conductors 7, two L-shaped conductors 7 are connected to both ends of a long arc-shaped conductor 7, respectively. The remaining two L-shaped conductors 7 are connected in the middle of the long arc-shaped conductors 7, respectively.

　No. 1 coil 25 to No. 1 coil 25; Twelve coils 25 are connected by a fourth conductor 7 . A fourth conductor 7 is the neutral conductor. The fourth conducting wire 7 is composed of one

annular conducting wire

7 and 12 straight conducting wires 7 . The annular conducting wire 7 is arranged in the third groove 65 on the inner circumference. The 12 linear conductors 7 are arranged in second grooves 64 different from each other and in which none of the L-shaped conductors 7 described above is arranged.

(Conductive wire pattern example 3)
Referring to FIG. 14, a conductor pattern will be described in the case where the motor 1 is a three-phase AC motor, the number of coils 25 is twelve, and the two-series-two-parallel delta connection is used.

　The U-phase coil is No. 11 coil 25 and No. 2 coil 25 and No. 5 coil 25 and No. 8 coils 25 . These coils 25 are connected by a first conductor 7 . The first conductor 7 is a voltage line.

The V-phase coil is No. 1 coil 25 and No. 4 coil 25 and No. 7 coil 25 and No. 10 coils 25 . These coils 25 are connected by a second conductor 7 . The second conductor 7 is a voltage line.

The second conductor 7 is composed of a long arc-shaped conductor 7 and four L-shaped conductors 7 . A long arc-shaped conductor 7 is arranged in the middle first groove 63 . The four L-shaped conductors 7 are arranged in the second grooves 64 and the first through holes 66 that are different from each other. Of the four L-shaped conductors 7, two L-shaped conductors 7 are connected to both ends of a long arc-shaped conductor 7, respectively. The remaining two L-shaped conductors 7 are connected in the middle of the long arc-shaped conductors 7, respectively.

The W-phase coil is No. 3 coil 25 and No. 6 coil 25 and No. 9 coil 25 and No. 12 coils 25 . These coils 25 are connected by a third conductor 7 . A third conductor 7 is a voltage line.

The third conductor 7 is composed of a long arc-shaped conductor 7 and four L-shaped conductors 7 . A long arc-shaped conducting wire 7 is arranged in a first groove 63 on the inner periphery. The four L-shaped conductors 7 are arranged in the second grooves 64 and the first through holes 66 that are different from each other. Of the four L-shaped conductors 7, two L-shaped conductors 7 are connected to both ends of a long arc-shaped conductor 7, respectively. The remaining two L-shaped conductors 7 are connected in the middle of the long arc-shaped conductors 7, respectively.

　No. 2 coil and No. 3 coil, no. 4 coil and No. 5 coil, no. 6 coil and No. 7 coil, no. 8 coil and No. 9 coil, no. 10 coils and No. 11 coils, no. 12 coils and No. The coils of one are each connected by a fourth conductor 7 . The fourth conductor 7 is of short arc shape. The fourth conducting wire 7 is arranged in the third groove 65 on the outer periphery. No. 2 coil and No. 3 coil, no. 4 coil and No. 5 coil, no. 6 coil and No. 7 coil, no. 8 coil and No. 9 coil, no. 10 coils and No. 11 coils, no. 12 coils and No. The fourth conductor 7 can be omitted if each of the coils 1 is formed by winding a series of windings.

(Conductive wire pattern example 4)
With reference to FIG. 15, the conductor pattern in the case where the motor 1 is a three-phase AC motor, the number of coils 25 is twelve, and the coils are four-parallel delta connections will be described.

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

The first conductor 7 is composed of one long arc-shaped conductor 7 and eight L-shaped conductors 7 . A long arc-shaped conductor 7 is arranged in a first groove 63 on the outer periphery. The eight L-shaped conductors 7 are arranged in the second grooves 64 and the first through holes 66 that are different from each other. Of the eight L-shaped conductors 7 , two L-shaped conductors 7 are connected to both ends of a long arc-shaped conductor 7 . The remaining six L-shaped conductors 7 are each connected to the middle of the long arc-shaped conductor 7 .

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

The second conductor 7 is composed of one long arc-shaped conductor 7 and eight L-shaped conductors 7. A long arc-shaped conductor 7 is arranged in the middle first groove 63 . The eight L-shaped conductors 7 are arranged in the second grooves 64 and the first through holes 66 that are different from each other. Of the eight L-shaped conductors 7 , two L-shaped conductors 7 are connected to both ends of a long arc-shaped conductor 7 . The remaining six L-shaped conductors 7 are each connected to the middle of the long arc-shaped conductor 7 .

The W-phase coil is No. 6 coil 25 and No. 7 coil 25 and No. 8 coil 25 and No. 9 coil 25 and No. 12 coils 25 and No. 1 coil 25 and No. 2 coil 25 and No. 3 coils 25 . These coils 25 are connected by a third conductor 7 . A third conductor 7 is a voltage line.

The third conductor 7 is composed of one long arc-shaped conductor 7 and eight L-shaped conductors 7. A long arc-shaped conducting wire 7 is arranged in a first groove 63 on the inner periphery. The eight L-shaped conductors 7 are arranged in the second grooves 64 and the first through holes 66 that are different from each other. Of the eight L-shaped conductors 7 , two L-shaped conductors 7 are connected to both ends of a long arc-shaped conductor 7 . The remaining six L-shaped conductors 7 are each connected to the middle of the long arc-shaped conductor 7 .

[Circuit board]
The motor 1 preferably has a circuit board 8, as shown in FIGS. The circuit board 8 is for supplying an appropriate amount of current to each coil 25 at an appropriate timing when the motor 1 is in use. The circuit board 8 is attached to the second surface 90s. The shape of the circuit board 8 of this embodiment is semicircular. A conductor 7 and a power supply are connected to the circuit board 8 .

[Case]
As shown in FIG. 4, the case 9 accommodates the stator 2, the rotor 3, a portion 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. ing. The case 9 of this embodiment has a base portion 90, a first cover portion 91, and a second cover portion 92, as shown in FIGS. The first cover portion 91 and the second cover portion 92 are fixed to the base portion 90 by fastening members 96 .

(base part)
The base portion 90 supports the stator 2, as shown in FIGS. The shape of the base portion 90 is disc-shaped as shown in FIG. The base portion 90 has a first surface 90f, a second surface 90s, a projecting portion 90t, a first through hole 90a, a second through hole 90b, and a third through hole 90c.

The stator 2 is arranged on the first surface 90f as shown in FIG. The second surface 90s is provided on the side opposite to the first surface 90f. The second surface 90s faces the wiring member 6 in this embodiment.

The projecting portion 90t is provided between the stator 2 and the first bearing 51. The shape of the projecting portion 90t is, for example, cylindrical. The projecting portion 90t is connected to the first surface 90f. A first bearing 51 is arranged inside the projecting portion 90t.

Inside the first through hole 90a shown in FIG. 2, the fastening member 95 described above is arranged as shown in FIG. The position of the first through-hole 90a and the position of the hole portion of the stator core 21 correspond to each other.

A fastening member 96 is arranged as shown in FIG. 4 inside the second through hole 90b shown in FIG. 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, like the fastening member 95, a screw or bolt. 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 at positions corresponding to each other.

Inside the third through hole 90c shown in FIG. 2, the connection terminal 26 is arranged as shown in FIG. The number of third through holes 90 c in this embodiment is twice the number of coils 25 . The positions of the third through holes 90c and the ends of the coils 25 correspond to each other.

(first cover part)
The first cover part 91 protects the stator 2 and the rotor 3, as shown in FIG. 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.

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 disc-shaped. A recess 911 a is provided in the center of the first plate portion 911 . A through hole 911b is provided in the bottom of the recess 911a. The second bearing 55 and the shaft 4 are arranged inside the recess 911a. The shaft 4 is inserted through the through hole 911b.

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

(Second cover part)
The second cover part 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 peripheral wall portion 922 . The second plate portion 921 and the second peripheral wall portion 922 are configured integrally.

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 disc-shaped. A through hole 921 a is provided in the center of the second plate portion 921 .

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

[Effect of Embodiment 1]
The motor 1 of this embodiment can be manufactured by performing the following steps a to c by providing 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, the wiring member 6 is prepared in which the conductors 7 are arranged in the first grooves 63, the second grooves 64, and the first through holes 66 so as to form a predetermined conductor pattern. In step c, the conducting wire 7 arranged on the wiring member 6 and the plurality of coils 25 are connected. By using the wiring member 6 , the plurality of coils 25 can be connected to each other by the conducting wire 7 . Therefore, in the manufacturing process of the motor, it is not necessary to form the plurality of coils 25 by winding a series of windings. By providing the wiring member 6 with a plurality of first grooves 63, a plurality of second grooves 64, and a plurality of first through holes 66, various conductor patterns can be accommodated. That is, the conducting wire 7 arranged on 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 windings so that the ends of the windings of the plurality of coils 25 are out of alignment. Therefore, it is easy to manufacture a plurality of coils 25 in the manufacturing process of the motor. Therefore, the motor 1 is excellent in productivity.

The wiring member 6 of this embodiment has a plurality of first grooves 63, a plurality of second grooves 64, and a plurality of first through-holes 66, so that it can correspond to various conductor patterns, and thus has high versatility. In particular, by providing the third groove 65, the wiring member 6 can support not only the delta connection shown in FIGS. 14 and 15 but also the star connection shown in FIGS. Therefore, the wiring member 6 of this embodiment has particularly high versatility.

<<Embodiment 2>>
〔motor〕
The motor 1 of Embodiment 2 will be described with reference to FIG. 17 . FIG. 17 shows only the stator 2, the connection terminals 26, the wiring members 6, and the conducting wires 7 for convenience of explanation. The motor 1 of this embodiment differs from the motor of the first embodiment mainly in that the shape of the wiring member 6 is cylindrical. The following description will focus on the differences from the first embodiment. Descriptions of configurations similar to those of the first embodiment may be omitted.

[Wiring member]
In this embodiment, the wiring member 6 is a tubular body surrounding the outer circumference of the stator 2 . Unlike this embodiment, the wiring member 6 may be arranged on the inner periphery of the stator 2 . The wiring member 6 and the stator 2 are arranged coaxially. The first surface 61 is the surface 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 a 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 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 have the third groove.

[Effect of Embodiment 2]
The motor 1 of this embodiment is excellent in productivity, like the motor 1 of the first embodiment. Although the wiring member 6 of this embodiment does not have the third groove, the number of the first grooves 63 is one more than the number of phases of the motor 1. Therefore, like the wiring member 6 of the first embodiment, only delta connection is required. It can also support star connection. Therefore, the wiring member 6 of this embodiment has particularly high versatility, like the wiring member 6 of the first embodiment.

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

The base portion may be composed of a wiring member. In that case, the number of parts is reduced.

The yoke may be composed of a plurality of fan plate-shaped yoke pieces. The number of teeth connected to each yoke piece may be one or plural.

The motor may be a double stator/single rotor type axial gap motor. A double-stator/single-rotor type motor has two stators and one rotor. In the double-stator/single-rotor type, two stators are assembled so that one rotor is sandwiched between them. The motor may be a single-stator/double-rotor type axial gap motor. A single-stator/double-rotor type motor has one stator and two rotors. In the double-stator/single-rotor type, two rotors are assembled so that one stator is sandwiched between them. Furthermore, the motor may be a radial gap motor.

1 motor 2 stator 21 stator core 22 yoke 23 tooth 25 coil 26 connection terminal 28 insulating member 3 rotor 31 rotor main body 35 magnet 4 shaft 51 first bearing 55 second bearing 6 wiring member 60 main body, 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 Lead wire 8 Circuit board 9 Case 90 base portion 90f first surface 90s second surface 90t projection 90a first through hole 90b second through hole 90c third through hole 91 first cover portion 911 first plate portion 911a recess 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, 96 fastening member

Claims

a plurality of coils arranged on a circumference around the rotation axis;
a wiring member arranged coaxially with the rotating shaft;
a plurality of conductors;
The wiring member is
front page and
a second surface opposite to the first surface;
a plurality of through holes connecting the first surface and the second surface,
one of the first surface and the second surface is a surface facing the plurality of coils;
The first surface comprises 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 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 conductors are arranged in the plurality of first grooves, the plurality of second grooves, and the plurality of through holes,
motor.
the number of the plurality of first grooves is equal to or greater than the number of phases of the motor,
2. The motor according to claim 1, wherein the number of said plurality of second grooves is at least twice the number of said coils.
The shape of the wiring member is a disk shape centered on the rotation axis,
The plurality of first grooves are provided concentrically,
3. The motor according to claim 1, wherein said plurality of second grooves are provided radially.
The shape of the wiring member is a cylindrical shape centered on the rotation axis,
The plurality of first grooves are provided in parallel in the axial direction of the wiring member,
3. The motor according to claim 1, wherein said plurality of second grooves are provided in parallel in the circumferential direction of said wiring member.
The motor according to any one of claims 1 to 4, wherein the wiring member is an insulator.
The wiring member is a conductor,
6. The motor according to any one of claims 1 to 5, further comprising an insulating member provided between said wiring member and each of said plurality of conducting wires.
comprising a main body in which a plurality of conductors for connecting a plurality of coils provided in the motor are arranged,
The main body is
front page and
a second surface opposite to the first surface;
a plurality of through holes connecting the first surface and the second surface,
The first surface comprises 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 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 material.