WO2022004481A1

WO2022004481A1 - Magnetic pole element, electric motor, and magnetic pole element manufacturing method

Info

Publication number: WO2022004481A1
Application number: PCT/JP2021/023538
Authority: WO
Inventors: 舞帆辰巳; 俊平林; 信吾笠井
Original assignee: 株式会社神戸製鋼所
Priority date: 2020-07-03
Filing date: 2021-06-22
Publication date: 2022-01-06
Also published as: JP2022013098A; JP7391783B2

Abstract

Provided is a magnetic pole element capable of supporting a plurality of iron cores and a plurality of permanent magnets so as to be rotatable without deteriorating properties thereof. This magnetic pole element is provided with: a plurality of iron cores arrayed in a rotational direction; a plurality of permanent magnets arranged so as to face, among the outer surfaces of the iron cores, outer surfaces excluding open surfaces; and a support unit formed from a nonmagnetic material. The support unit includes an inner support member and an outer support member. A portion of the open surfaces is fixed to the inner and outer support members.

Description

Monopoles, motors, and methods for manufacturing monopoles

The present invention relates to a monopole, a motor, and a method for manufacturing the monopole.

Conventionally, an electric machine including an armature and a mover, which can increase the number of magnetic fluxes generated in a gap between the armature and the mover, has been proposed. For example, Patent Document 1 describes an axial gap type motor having the following configuration. The electric machine includes a rotor and an armature. The rotor includes a plurality of magnetic pole blocks. Each of the plurality of magnetic blocks includes an iron core and a plurality of permanent magnets. The iron core has a circular fan-shaped plate shape and has six outer surfaces including one main surface. The plurality of permanent magnets are attached to each of the five outer surfaces other than the main surface. The plurality of magnetic pole blocks are arranged in a movable direction which is a circumferential direction about the rotation axis of the rotor. The armature is arranged so as to face the rotor in the axial direction.

In the axial gap type motor described in Patent Document 1, the plurality of permanent magnets and the iron core must be rotatably supported with sufficient strength while arranging the plurality of permanent magnets and the iron core in three dimensions. There is a problem that it does not become. On the other hand, it is not preferable that the characteristics of the motor are deteriorated due to a decrease in the magnetic flux generated from the magnetic pole or an increase in the volume of the motor.

JP-A-2019-75848

The present invention is a magnetic pole element that includes a plurality of iron cores and a plurality of permanent magnets to form an electric motor, and rotatably supports the plurality of iron cores and the plurality of permanent magnets without deteriorating the characteristics of the electric motor. It is intended to provide a possible magnetic monopole.

Provided are a monopole and an armature that is arranged to face the monopole in the direction of the axis of rotation and forms a magnetic field that rotates the monopole around a axis of rotation parallel to the direction of the axis of rotation. This is the magnetic monopole of the electric motor provided with the above. The magnetic monopole includes a plurality of iron cores, a plurality of permanent magnets, and a support unit. The plurality of iron cores are arranged in the rotation direction of the magnetic monopole, and each has a plurality of outer surfaces. The plurality of permanent magnets are arranged so as to face a plurality of outer surfaces selected from the outer surfaces of the plurality of iron cores, and include permanent magnets interposed between the iron cores adjacent to each other in the rotational direction. .. Each of the plurality of permanent magnets has a main surface facing the outer surface of the iron core corresponding to the permanent magnet and an opposite side surface opposite to the outer surface of the plurality of iron cores, and the main surface and the opposite side surface face each other. Consists of opposite magnetic poles. The support unit is formed of a non-magnetic material and supports the plurality of iron cores and the plurality of permanent magnets. The support unit is arranged inside the plurality of iron cores in the radial direction of rotation of the magnetic pole element, and outside the plurality of iron cores and the plurality of permanent magnets in the radial direction of rotation. The plurality of iron cores and the plurality of permanent magnets are supported together with the inner support member while sandwiching the plurality of iron cores and the plurality of permanent magnets in the direction of the radius of gyration. The outer surface of the plurality of iron cores includes a plurality of open surfaces that are opened without facing the permanent magnet, and the plurality of open surfaces are a plurality of armatures that face the armature in the direction of the rotation axis. It includes an facing surface, an inner support member facing surface facing the inner support member in the turning radius direction, and an outer supporting member facing surface facing the inner support member in the turning radius direction. A part of the plurality of open surfaces is coupled to the support unit.

It is a cross-sectional front view of the electric motor which concerns on 1st Embodiment of this invention, and is the figure which shows the cross section along the line II shown in FIG. 2A. It is a top view which shows the cross section which saw the magnetic pole element constituting the electric machine in the axial direction from the armature of the electric machine. It is a top view which shows the cross section which saw the plurality of magnetic pole units constituting the magnetic pole element in the axial direction. It is a top view which shows the cross section which saw the support unit constituting the magnetic pole element in the axial direction. It is an exploded perspective view which shows one of the said plurality of magnetic pole units. It is a figure which shows the cross section which cut at the plane orthogonal to the rotation direction of the magnetic pole element, and the plane orthogonal to the radial direction, and is along the IV-IV line shown in FIG. 2A. FIG. 3 is a cross-sectional view showing magnetic paths formed in tooth portions adjacent to each other in the radial direction in the armature in opposite directions. FIG. 3 is a cross-sectional view showing magnetic paths formed in tooth portions adjacent to each other in the rotation direction in the armature and which are opposite to each other. It is a perspective view which shows the 1st example of the structure for fixing the dorsal support member in the magnetic monopole. It is a perspective view which shows the 2nd example of the structure for fixing the dorsal support member. It is a perspective view which shows the 3rd example of the structure for fixing the dorsal support member. FIG. 3 is a perspective view showing a first example of a structure for fixing the support unit to the magnetic pole unit in the radius of gyration direction. It is a perspective view which shows the 2nd example of the structure for fixing the support unit to the magnetic pole unit in the radius of gyration direction. It is a perspective view which shows the 3rd example of the structure for fixing the support unit to the magnetic pole unit in the radius of gyration direction. It is a perspective view which shows the 4th example of the structure for fixing the support unit to the magnetic pole unit in the radius of gyration direction. It is a perspective view which shows the 5th example of the structure for fixing the support unit to the magnetic pole unit in the radius of gyration direction. It is a perspective view which shows the sixth example of the structure for fixing the support unit to the magnetic pole unit in the radius of gyration direction. It is a cross-sectional front view of the electric motor which concerns on 2nd Embodiment of this invention, and is the figure which shows the cross-section corresponding to the cross-section shown in FIG. It is an exploded perspective view of the magnetic pole unit of the magnetic pole element of the said motor shown in FIG. 9 is an exploded perspective view of the support unit of the motor shown in FIG. 9. 9 is a partial cross-sectional perspective view showing an outer support member element prepared in the method for manufacturing the magnetic monopole of the motor shown in FIG. 9. It is a partial cross-sectional perspective view which shows the 1st process of the outer mounting process included in the said manufacturing method. It is a partial cross-sectional perspective view which shows the 2nd process of the said outer mounting process. It is a partial cross-sectional perspective view which shows the 3rd process of the said outer mounting process. It is a partial cross-sectional perspective view which shows the 1st process of the subunit formation process included in the assembly method. It is a partial cross-sectional perspective view which shows the 2nd process of the subunit formation process. It is a partial cross-sectional perspective view which shows the 3rd process of the subunit formation process. It is a partial cross-sectional perspective view which shows the 4th process of the subunit formation process. 9 is a cross section showing a cross section of the magnetic pole element of the motor shown in FIG. 9 cut at a plane orthogonal to the rotation direction and a plane orthogonal to the radius of gyration, and corresponding to the cross section shown in FIG. .. 9 is a front sectional view showing a magnetic path formed in a tooth portion adjacent to each other in the radial direction in the armature of the electric motor shown in FIG. 9 in opposite directions. 9 is a front sectional view showing a magnetic path formed in a tooth portion adjacent to each other in the rotation direction in the armature of the electric motor shown in FIG. 9 in opposite directions. It is a perspective view which shows the modification of the subunit which constitutes a magnetic pole. It is a perspective view which shows the 1st modification of the joint part of the two support member elements constituting each of the inner support member and the outer support member. It is a perspective view which shows the 2nd modification of the said joint part. It is a perspective view which shows the 3rd modification of the said joint part. It is a perspective view which shows the 4th modification of the said joint part. It is a perspective view which shows the 1st division member and the 2nd division member constituting the outer support member in the modified example of the outer support member. It is a perspective view of the magnetic pole element which concerns on 3rd Embodiment of this invention. It is a perspective view which shows the 1st modification of the protrusion group of the iron core, a permanent magnet, and the outer support member for holding them. It is a perspective view which shows the protrusion group of the 2nd modification of the protrusion group of the iron core, the magnet, and the outer support member for holding them. It is a perspective view which shows the iron core and the permanent magnet of the 2nd modification. It is a perspective view which shows the said 2nd modification. It is a perspective view which shows the 3rd modification of the said iron core and the said permanent magnet. It is a perspective view which shows the iron core and the permanent magnet shown in FIG. 23A, and the protrusion group holding them. It is a perspective view which shows the deformation example of the intermediate support member intervening between the permanent magnets adjacent to each other. FIG. 24A is a perspective view showing a state in which the intermediate support member shown in FIG. 24A is interposed between the permanent magnets adjacent to each other.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a cross-sectional front view of the motor 1 according to the first embodiment of the present invention. FIG. 1 shows, in detail, a cross section along the line I-I shown in FIG.

The electric machine 1 is an axial gap type electric machine having a single stator structure, which includes a rotating shaft 5 and an armature 10. Both the armature 10 and the magnetic pole 20 have a disk shape, and are arranged so as to face each other with a constant gap in the direction of the rotation axis parallel to the central axis of the rotation shaft 5. The armature 10 forms a magnetic field that rotates the magnetic monopole 20 around the central axis of the rotating shaft 5.

In the following description, the direction in which the magnetic monopole 20 moves may be referred to as a "rotational direction". Further, a direction along a straight line orthogonal to the central axis of the rotation axis 5 may be referred to as a "radial direction of rotation". Further, the direction from the magnetic monopole 20 toward the armature 10 along the central axis of the rotating shaft 5 may be referred to as a "rotating axis direction". Further, one side in the rotation axis direction (the side closer to the armature 10 in this embodiment; the upper side in FIG. 1) is the "first axis direction side", and the other side (the electric machine in this embodiment). The side opposite to the child 10; the lower side in FIG. 1) may be referred to as the "second axial side".

The armature 10 includes a base member 11, a plurality of coils 12, and a bearing 113. The base member 11 includes a yoke portion 111, a plurality of teeth portions 112, and a rotary shaft support portion 114. The yoke portion 111 has a plate shape having a thickness direction parallel to the rotation axis direction, and has a circular shape when viewed in the rotation axis direction. That is, the yoke portion 111 has a disk shape. The plurality of teeth portions 112 project in the second axial direction from the surface of both surfaces of the yoke portion 111 facing the second axial direction. The plurality of tooth portions 112 are arranged at equal intervals in the rotational direction along two concentric circles centered on the central axis, that is, an inner circle and an outer circle having a diameter larger than that of the inner circle. Each of the plurality of tooth portions 112 has a shape lacking the inner portion of the fan shape in the radius of gyration when viewed in the direction of the axis of rotation. The base member 11 is made of a soft magnetic material such as soft iron or soft ferrite. The rotating shaft support portion 114 is located at the center of the base member 11, and the rotating shaft 5 is passed through the rotating shaft 5 via the bearing 113 in a state where the rotating shaft 5 penetrates the rotating shaft support portion 114 in the direction of the rotating shaft. It is rotatably supported in the rotational direction. The plurality of coils 12 are composed of lead wires wound around each of the plurality of teeth portions 112.

The magnetic monopole 20 includes a plurality of iron cores, a plurality of permanent magnets, and a support unit 50.

The plurality of iron cores are arranged in the rotation direction, that is, in the rotation direction and the radius of gyration in this embodiment. Each of the plurality of iron cores is a soft magnetic material and has a plurality of outer surfaces, six outer surfaces in this embodiment.

The plurality of permanent magnets are arranged so as to face a plurality of outer surfaces selected from the outer surfaces of the plurality of iron cores. The plurality of permanent magnets include permanent magnets interposed between the iron cores adjacent to each other in the rotation direction, and each of the plurality of permanent magnets is the outer surface of the iron core corresponding to the permanent magnet among the plurality of iron cores. It has a main surface facing the surface and an opposite side surface on the opposite side thereof, and the main surface and the opposite side surface form magnetic poles different from each other.

The plurality of iron cores and the plurality of permanent magnets according to this embodiment constitute a plurality of magnetic pole units 30, and the support unit 50 supports the plurality of magnetic pole units 30. 2A, 2B, and 2C are plan views showing cross sections of the magnetic pole 20, the plurality of magnetic pole units 30, and the support unit 50 as viewed axially from the armature 10, respectively. Is a perspective view of the magnetic pole unit 30.

The support unit 50 includes an inner support member 51 and an outer support member 52. The inner support member 51 is provided inside the plurality of magnetic pole units 30 in the radial direction of rotation, and the outer support member 52 is provided outside the plurality of magnetic pole units 30 in the radial direction of rotation.

The inner support member 51 includes a cylindrical main body portion 51b and a plurality of inner protrusions 51a. The plurality of inner protrusions 51a have a radius of rotation relative to the outer peripheral surface of the main body portion 51b at one end of the inner support member 51 in the rotation axis direction, specifically, the end on the first axis direction side. Protruding outward in the direction. The plurality of inner protrusions 51a are provided at positions corresponding to the boundary positions of the magnetic pole units 30 adjacent to each other among the plurality of magnetic pole units 30 in the rotation direction. Therefore, the number of the plurality of inner protrusions 51a is equal to the number of the plurality of magnetic pole units 30.

The outer support member 52 includes a cylindrical main body portion 52b and a plurality of outer protrusions 52a. The plurality of outer protrusions 52a rotate more than the inner peripheral surface of the main body portion 52b at one end of the outer support member 52 in the rotation axis direction, specifically, at the end on the first axis direction side. It projects inward in the radial direction. The plurality of outer protrusions 52a are provided at positions corresponding to the boundary positions of the magnetic pole units 30 adjacent to each other among the plurality of magnetic pole units 30 in the rotation direction. Therefore, the number of the plurality of outer protrusions 52a is equal to the number of the plurality of magnetic pole units 30.

The support unit 50 according to this embodiment further includes a dorsal support member 53. The dorsal support member 53 is provided on the second axial direction side of the magnetic pole unit 30, that is, on the side opposite to the armature 10. The dorsal support member 53 is a circular plate-shaped member centered on the central axis of the rotating shaft 5. A through hole is formed in the center of the dorsal support member 53, and the rotation shaft 5 is inserted into the through hole in the direction of the rotation axis. The dorsal support member 53 has an inner diameter, that is, the diameter of the through hole, and the inner diameter is larger than the diameter of the inner peripheral surface of the main body portion 51b of the inner support member 51, and the inner diameter thereof is larger than the diameter of the inner peripheral surface of the main body portion 51b. It is smaller than the diameter of the surface. The dorsal support member 53 has an outer diameter, which is larger than the diameter of the inner peripheral surface of the main body portion 52b of the outer support member 52 and larger than the diameter of the outer peripheral surface of the main body portion 52b. Is also small.

Each of the plurality of magnetic pole units 30 includes a plurality of magnetic pole blocks, that is, a first inner block 31, a second inner block 32, a first outer block 41, and a second outer block 42. The first inner block 31 is provided on the first axial direction side and inside the turning radius direction. The second inner block 32 is provided on the side in the second axial direction and inside in the radius of gyration. The first outer block 41 is provided on the first axial direction side and outside in the radius of gyration direction. The second outer block 42 is provided on the side in the second axial direction and on the outer side in the radius of gyration.

The first inner block 31 includes a first inner core 311 included in the plurality of iron cores and four permanent magnets 312 included in the plurality of permanent magnets. The first inner core 311 is a first core arranged on the side in the first axial direction, and is an inner core arranged inside in the radial direction of rotation. The first inner iron core 311 has six outer surfaces. The first inner iron core 311 has an arc shape when viewed in the direction of the rotation axis, and has a flat plate shape having a thickness in the direction of the rotation axis. The four permanent magnets 312 are included in the plurality of permanent magnets. The four permanent magnets 312 have a plurality of outer surfaces selected from the six outer surfaces of the first inner core 311, specifically, an inner peripheral surface facing inward in the radial direction and the first axial side. It is arranged so as to cover the side surface in the first axial direction facing the surface and the four outer surfaces excluding the side surface. Each of the four permanent magnets 312 has a main surface 313 facing the outer surface of the first inner core 311, and the main surface 313 has substantially the same size as the outer surface of the first inner core 311. Has a magnet. The main surface 313 of each of the four permanent magnets 312 constitutes the same magnetic pole, and the opposite side surface, which is the surface opposite to the main surface 313, constitutes the magnetic pole opposite to the magnetic pole of the main surface 313. do. The first axial side surface of the first inner iron core 311 constitutes a rotor magnetic pole surface 315 opened so as to face the armature 10 in the rotation axis direction. The rotor magnetic pole surface 315 constitutes the same magnetic pole as the magnetic pole of the main surface 313 of each of the four permanent magnets 312. The opposite side surface of each of the four permanent magnets 312 constitutes a magnetic pole opposite to that of the rotor magnetic pole surface 315.

The second inner block 32 includes a second inner core 321 included in the plurality of iron cores and four permanent magnets 322 included in the plurality of permanent magnets. The second inner core 321 is a second core arranged on the side in the second axial direction, and is an inner core arranged inside in the radial direction of rotation. The second inner iron core 321 has six outer surfaces. The second inner iron core 321 has an arc shape when viewed in the direction of the rotation axis, and has a flat plate shape having a thickness in the direction of the rotation axis. The four permanent magnets 322 are a plurality of outer surfaces selected from the six outer surfaces of the second inner core 321, specifically, an inner peripheral surface facing inward in the radial direction of rotation and the second axial direction. It is arranged so as to cover each of the four outer surfaces except the side surface in the second axial direction facing the side. Each of the four permanent magnets 322 has a main surface 323 facing the outer surface of the second inner core 321 and the main surface 323 has substantially the same size as the outer surface of the second inner core 321. Has a magnet. The main surface 323 of each of the four permanent magnets 322 constitutes the same magnetic pole, and the opposite side surface, which is the surface opposite to the main surface 323, constitutes the magnetic pole opposite to the magnetic pole of the main surface 323. do.

The first outer block 41 includes a first outer core 411 included in the plurality of iron cores and four permanent magnets 412 included in the plurality of permanent magnets. The first outer core 411 is a first core arranged on the side in the first axial direction, and is an outer core arranged outside in the radial direction of rotation. The first outer core 411 has six outer surfaces. The first outer core 411 has an arc shape when viewed in the direction of the rotation axis, and has a flat plate shape having a thickness in the direction of the rotation axis. The four permanent magnets 412 are included in the plurality of permanent magnets. The four permanent magnets 412 are a plurality of outer surfaces selected from the six outer surfaces of the first outer core 411, specifically, an outer peripheral surface facing outward in the radial direction of rotation and a side in the first axial direction. It is arranged so as to cover each of the four outer surfaces excluding the side surface in the first axial direction facing. Each of the four permanent magnets 412 has a main surface 413 facing the outer surface of the first outer core 411, and the main surface 413 has substantially the same size as the outer surface of the first outer core 411. Has a magnet. The main surface 413 of each of the four permanent magnets 412 constitutes the same magnetic pole, and the opposite side surface, which is the surface opposite to the main surface 413, constitutes the magnetic pole opposite to the magnetic pole of the main surface 413. do. The first axial side surface of the first outer core 411 constitutes a rotor magnetic pole surface 415 opened so as to face the armature 10 in the rotation axis direction. The rotor magnetic pole surface 415 constitutes the same magnetic pole as the magnetic pole of the main surface 413 of each of the four permanent magnets 412. The opposite side surface of each of the four permanent magnets 412 constitutes a magnetic pole opposite to that of the rotor magnetic pole surface 415.

The second outer block 42 includes a second outer core 421 included in the plurality of iron cores and four permanent magnets 422 included in the plurality of permanent magnets. The second outer core 421 is a second core arranged on the side in the second axial direction, and is an outer core arranged outside in the radial direction of rotation. The second outer core 421 has six outer surfaces. The second outer core 421 has an arc shape when viewed in the direction of the rotation axis, and has a flat plate shape having a thickness in the direction of the rotation axis. The four permanent magnets 422 are a plurality of outer surfaces selected from the six outer surfaces of the second outer core 421, specifically, an outer peripheral surface facing outward in the radius of gyration and the second axial direction. It is arranged so as to cover each of the four outer surfaces excluding the side surface in the second axial direction facing the side. The four permanent magnets 422 have a main surface 423 facing the outer surface of the second outer core 421, and the main surface 423 has substantially the same size as the outer surface of the second outer core 421. Have. The main surface 423 of each of the four permanent magnets 422 constitutes the same magnetic pole, and the opposite side surface, which is the surface opposite to the main surface 423, constitutes the magnetic pole opposite to the magnetic pole of the main surface 423. do.

In the plurality of inner protrusions 51a of the inner support member 51, the inner permanent magnets of the plurality of magnetic pole units 30, that is, the permanent magnets 312 interposed between the first inner cores 311 are displaced in the first axial direction. The first inner core 311 of the magnetic pole unit 30 is opened to the armature 10 between the inner protrusions 51a adjacent to each other in the rotation direction among the plurality of inner protrusions 51a. They are arranged so that they do. In the plurality of outer protrusions 52a of the outer support member 52, the outer permanent magnets of the plurality of magnetic pole units 30, that is, the permanent magnets 412 interposed between the first outer cores 411 are displaced in the first axial direction. The first outer core 411 of the magnetic pole unit 30 is opened to the armature 10 between the outer protrusions 52a adjacent to each other in the rotation direction among the plurality of outer protrusions 52a. They are arranged so that they do. The dorsal support member 53 suppresses the plurality of magnetic pole units 30 from being displaced toward the second axial direction. That is, the plurality of magnetic pole units 30 are constrained on both sides in the rotation axis direction by the plurality of inner protrusions 51a, the plurality of outer protrusions 52a, and the dorsal support member 53. The plurality of magnetic pole units 30 and the support unit 50 are coupled to each other as described in detail later. The support unit 50 is made of a non-magnetic material. The non-magnetic material is, for example, aluminum, titanium, or resin.

Of the plurality of permanent magnets described above, the permanent magnets adjacent to each other in the rotation axis direction or the rotation radius direction may be composed of a single permanent magnet. The adjacent permanent magnets are, for example, the permanent magnet 312 of the first inner block 31, the permanent magnet 322 of the second inner block 32 adjacent to the permanent magnet 312 in the direction of the rotation axis, and the permanent magnet 322 of the first outer block 41. The permanent magnet 412 and the second permanent magnet 422 of the second outer block 42 adjacent to the permanent magnet 412 in the rotation axis direction, the permanent magnet 312 of the first inner block 31 and the second one adjacent to the permanent magnet 312 in the rotation radius direction. 1 The permanent magnet 412 of the outer block 41, the second permanent magnet 322 of the second inner block 32, and the permanent magnet 422 of the second outer block 42 adjacent to the second permanent magnet 322 in the direction of the radius of gyration, the first inner block. Of the four permanent magnets 312 included in 31, adjacent to each other, and among the four permanent magnets 322 included in the second inner block 32, adjacent to each other, the first outer block 41. Among the four permanent magnets 412 included, those adjacent to each other, and among the four permanent magnets 422 included in the second outer block 42, those adjacent to each other.

That is, only a single permanent magnet may intervene between the iron cores adjacent to each other among the plurality of iron cores. Specifically, the permanent magnet 312 and the permanent magnet 322, that is, the intermediate permanent magnet, interposed between the first inner core 311 and the second inner core 321 may be integrated. Further, the permanent magnet 412 and the permanent magnet 422, that is, the intermediate permanent magnet, arranged between the first outer core 411 and the second outer core 421 may be integrated. Further, the permanent magnet 312 and the permanent magnet 412 interposed between the first inner core 311 and the first outer core 411, that is, the permanent magnets interposed between the inner core and the outer core are integrated. May be. Further, the permanent magnet 322 and the permanent magnet 422 interposed between the second inner core 321 and the second outer core 421, that is, the permanent magnets interposed between the inner core and the outer core 421 are integrated. May be. Further, two permanent magnets 312 intervening between the first inner core 311 and the other first inner core 311 adjacent to the first inner core 311, that is, intervening between the inner cores adjacent to each other. The inner permanent magnets to be used and the first permanent magnets arranged on the first axial direction side may be integrated. Further, two permanent magnets 322 intervening between the second inner core 321 and the other second inner core 321 adjacent to the second inner core 321 in the rotation direction, that is, intervening between the inner cores adjacent to each other. The inner permanent magnet and the second permanent magnet arranged on the second axial direction side may be integrated. Further, two permanent magnets 412 intervening between the first outer core 411 and the other first outer core 411 adjacent to the first outer core 411, that is, intervening between the outer cores adjacent to each other. The outer permanent magnets to be used and the first permanent magnets arranged on the first axial direction side may be integrated. Further, two permanent magnets 422 intervening between the second outer core 421 and the other second outer core 421 adjacent to the second outer core 421 in the rotational direction, that is, intervening between the outer cores adjacent to each other. The outer permanent magnet and the second permanent magnet arranged on the side in the second axial direction may be integrated.

Of the plurality of magnetic pole blocks, the magnetic pole blocks adjacent to each other are arranged so as to be in surface contact with each other. Of the magnetic pole blocks included in the entire plurality of magnetic pole units 30, the rotor magnetic pole surface 315 and the rotation of the first inner block 31 and the first outer block 41 arranged so as to face the armature 10. Of the child magnetic pole surfaces 415, the rotor magnetic pole surfaces adjacent to each other form opposite magnetic poles. That is, the first inner block 31 and the first outer block 41 are arranged so that the magnetic poles of the rotor magnetic pole surfaces 315 and 415 are alternately inverted in the rotation direction and the rotation radius direction. Therefore, one of the surfaces of all the first inner blocks 31 and the first outer block 41 in which adjacent magnetic pole blocks are in contact with each other constitutes an S pole, and the other constitutes an N pole. Similarly, of all the first inner block 31 and the second inner block 32, one of the surfaces of adjacent magnetic pole blocks in contact with each other constitutes an S pole, and the other constitutes an N pole. Further, one of the surfaces of all the first outer block 41 and the second outer block 42 in which adjacent magnetic pole blocks are in contact with each other constitutes an S pole, and the other constitutes an N pole. Further, of all the second inner block 32 and the second outer block 42, one of the surfaces of adjacent magnetic pole blocks in contact with each other constitutes an S pole, and the other constitutes an N pole. These things allow the two magnetic pole blocks adjacent to each other to be attracted to each other by a magnetic force so that the plurality of magnetic pole blocks can be easily arranged.

In the magnetic pole element 20 configured as described above, the rotor magnetic pole surface 315 of the first inner core 311 and the rotor magnetic pole surface 415 of the first outer core 411 are parallel to the rotation axis direction of the armature. No. 10, two outer surfaces of the four outer surfaces of the first inner and

outer cores

311, 411 face in the direction orthogonal to the rotation direction, and the remaining two outer surfaces are orthogonal to the rotation radius direction. Arranged to face the direction. As a result, the magnetic poles of the rotor magnetic pole surface 315 and the magnetic poles of the rotor magnetic pole surface 415 are alternately inverted one by one in each of the rotation direction and the rotation radius direction. Further, in each of the plurality of magnetic pole units 30, the second inner block 32 is arranged so as to be in contact with the first inner block 31 in the direction of the rotation axis, and the second outer block 42 is the first outer block 41. And are arranged so as to be in contact with the rotation axis direction. In each of the second inner and

outer cores

321, 421, two of the four outer surfaces face in a direction orthogonal to the rotation direction, and the remaining two outer surfaces face in a direction orthogonal to the radius of gyration. So arranged.

Each of the plurality of iron cores in the magnetic monopole 20 is magnetized by a plurality of permanent magnets surrounding the iron core. Of the plurality of permanent magnets, the magnetic flux generated from the permanent magnet whose main surface constitutes the S pole travels in the iron core facing the main surface of the plurality of iron cores. Since four permanent magnets are attached to the iron core so as to cover the four outer surfaces, the magnetic flux generated from each of the four permanent magnets travels inside the iron core, and each magnetic flux is the armature. It travels toward the rotation axis 10 and exits from the rotor

magnetic flux surface

315 or 415 into the gap between the magnetic flux element 20 and the armature 10. The magnetic flux branches radially around the central axis of the rotating shaft and enters the rotor

magnetic pole surface

315 or 415 constituting the N pole in the adjacent magnetic pole block. Magnetic fluxes from all magnetic pole blocks adjacent to the rotor

magnetic pole surface

315 or 415 constituting the N pole enter. Since the iron core including the rotor magnetic pole surface constituting the N pole of the rotor magnetic flux surfaces 315 and 415 faces the main surface constituting the N pole of the plurality of permanent magnets attached to the iron core. The magnetic flux further advances inside the iron core, branches in the rotation direction, the rotation radius direction, and the rotation axis direction, respectively, and enters the permanent magnet.

FIG. 4 shows a cross section of the magnetic monopole 20 cut at a plane orthogonal to the rotation direction and a plane orthogonal to the radial direction. FIG. 4 is a diagram showing a cross section along the IV-IV line shown in FIG. 2A in detail. In FIG. 4, the broken line arrow indicates the magnetization direction, and the polarity is S → N. In the example shown in FIG. 4, the magnetic flux generated from the permanent magnet 312 whose main surface 313 facing the first inner core 311 of the plurality of first inner blocks 31 constitutes an S pole is the first inner core. Proceed through 311. Since the permanent magnets 312 are attached to the four outer surfaces of the first inner core 311 respectively, the magnetic flux generated from each of these four permanent magnets 312 travels inside the first inner core 311 and each of them. The magnetic flux travels toward the armature 10 in the direction of the rotation axis and exits from the rotor magnetic pole surface 315 of the first inner core 311 to the gap between the rotor magnetic pole surface 315 and the armature 10. The magnetic flux branches radially, and the other one is from the rotor magnetic pole surface 315 forming the N pole in the first inner iron core 311 of the first inner block 31 and the other first inner block 31 adjacent to each other in the rotation direction. The north pole is formed in the first outer core 411 of the first outer block 41 adjacent to the first inner block 31 in the radial direction while entering the inside of the first inner core 311 of the first inner block 31. It enters the inside of the first outer core 411 from the rotor magnetic flux surface 415. After that, the magnetic flux travels inside the first inner core 311 and the first outer core 411. The magnetic flux that has traveled inside the first inner core 311 further travels in the axial direction, branches in the rotation direction and the radius of gyration, and enters the permanent magnet 312 adjacent to the first inner core 311. Further, the magnetic flux traveling inside the first outer core 411 further travels in the axial direction and branches in both the rotation direction and the radius of gyration direction to form a permanent magnet 412 adjacent to the first outer core 411. to go into.

Each of the rotor magnetic pole surfaces 315 and 415 is a permanent magnet 312 or a permanent magnet 412 adjacent to an iron core (first inner core 311 or first outer core 411) including the rotor magnetic pole surface among the plurality of permanent magnets. It constitutes the same magnetic pole as the magnetic pole of. For example, when the main surface of the permanent magnet facing one of the plurality of iron cores constitutes the S pole, the rotor magnetic pole surface of the one iron core constitutes the S pole. On the contrary, when the main surface of the permanent magnet facing one of the plurality of iron cores constitutes the N pole, the rotor magnetic pole surface of the one iron core constitutes the N pole.

FIG. 5 is a cross-sectional view showing magnetic paths in opposite directions formed in two tooth portions 112 adjacent to each other in the radial direction of the plurality of teeth portions 112 included in the armature 10. In the armature 10 of the axial gap type motor 1 having the above configuration, a magnetic field is generated around the coils 12 due to the flow of currents in opposite directions to the coils 12 adjacent to each other in the radial direction among the plurality of coils 12. Then, as shown in FIG. 5, a magnetic path is formed through the teeth portion 112 and the yoke portion 111 connected to the teeth portion 112. At this time, the surface of each of the teeth portions 112 facing the magnetic monopole 20 becomes the armature magnetic pole surface 13. The armature magnetic pole surface 13 of one of the two tooth portions 112 adjacent to each other in the radial direction constitutes an S pole, and the armature magnetic pole surface 13 of the other teeth portion 112 constitutes an N pole.

FIG. 6 is a cross-sectional view showing magnetic paths formed in two tooth portions 112 adjacent to each other in the rotation direction among the plurality of teeth portions 112 in opposite directions. In the example shown in FIG. 6, the armature magnetic pole surface 13 of one of the two teeth portions 112 adjacent to each other in the rotation direction constitutes the S pole, and the armature of the other teeth portion 112. The magnetic pole surface 13 constitutes the north pole.

Therefore, when a current flows through the coil 12 arranged around each of the plurality of teeth portions 112, the armature magnetic pole surface 13 of the plurality of teeth portions 112 and the magnetic pole element 20 facing the armature magnetic pole surface 13 are said to be opposed to the armature magnetic pole surface 13. The rotor magnetic pole surfaces 315 and 415 attract or repel each other by magnetic force. 5 and 6 show magnetic paths when the armature magnetic pole surface 13 and the rotor magnetic pole surfaces 315 and 415 are attracting each other. Therefore, it is possible to control the rotation direction and rotation speed of the magnetic monopole 20 by controlling the direction and timing of the current flowing through each of the plurality of coils 12.

In the magnetic flux element 20 of the motor 1 according to the above-described embodiment, since each of the plurality of iron cores is surrounded by the plurality of permanent magnets, a conventional rotor, for example, a ring fan-shaped plate-shaped permanent magnet can be used. The magnetic flux generated in the rotor magnetic pole surfaces 315 and 415 is increased as compared with the rotor arranged so as to face the armature.

Next, the method of assembling the magnetic monopole 20 will be described. In the method, the plurality of magnetic pole units 30 are fitted between the inner support member 51 and the outer support member 52 from the second axial direction side, and then the dorsal support member 53 is fitted to the plurality of. It includes fixing to at least one of the magnetic pole unit 30 and the outer support member 52. The dorsal support member 53 links the inner support member 51 and the outer support member 52 so that the inner support member 51 and the outer support member 52 can rotate integrally. be able to.

7A, 7B, and 7C each show an example of a method for fixing the dorsal support member 53 to the plurality of magnetic pole units 30.

In the first example shown in FIG. 7A, a through hole 45 in the rotation axis direction is formed in each of the plurality of magnetic pole units 30. These through holes 45 are formed in the central portion of the first outer block 41 and the second outer block 42 in the rotation direction and the radius of gyration direction. On the other hand, in the dorsal support member 53, a plurality of screw holes 531 are formed at positions corresponding to the through holes 45, respectively. A plurality of bolts 55 are inserted into each of the through holes 45 from the first axial direction side, and male screws of the plurality of bolts 55 are screwed into each of the screw holes 531. As a result, the support unit 50 including the dorsal support member 53 is fixed to the plurality of magnetic pole units 30. Alternatively, the dorsal support member 53 may also have a plurality of through holes instead of the screw holes 531. The bolt 55 is inserted into the plurality of through holes and the through holes 45 formed in the plurality of magnetic pole units 30, respectively, in the second axial direction of the dorsal support member 53 of the bolts 55. Even if the nut is attached to the male screw portion protruding outward from the side surface, the dorsal support member 53 can be fixed to the plurality of magnetic pole units 30.

In the second example shown in FIG. 7B, a plurality of through holes 532 (for example, the same number as the number of magnetic pole units 30) are formed in the dorsal support member 53, and the plurality of through holes 532 are formed in the dorsal support member 53. In 53, the outer support member 52 and the outer support member 52 are formed at a portion facing the rotation axis direction, and are arranged at intervals from each other in the rotation direction. On the other hand, in the outer support member 52, a plurality of screw holes (not shown) are formed at positions corresponding to the plurality of through holes 532. A plurality of bolts 56 are inserted into the plurality of through holes 532, and the male screws of the plurality of bolts 56 are screwed into the plurality of screw holes formed in the outer support member 52, respectively. As a result, the dorsal support member 53 is fixed to the plurality of magnetic pole units 30.

Alternatively, although not shown, a plurality (for example, the number of magnetic pole units 30) arranged at equal intervals in the rotational direction at a portion of the dorsal support member 53 facing the inner support member 51, that is, an inner peripheral portion. The same number of through holes) may be formed, and a plurality of screw holes may be formed at positions corresponding to the plurality of through holes in the inner support member 51. The dorsal support member 53 can also be fixed to the plurality of magnetic pole units 30 by inserting a plurality of bolts into the plurality of through holes and screwing the male screws of the bolts into the screw holes. Is.

The third example shown in FIG. 7C is a combination of the first example shown in FIG. 7A and the second example shown in FIG. 7B. The means for fixing the dorsal support member 53 to the plurality of magnetic pole units 30 is not limited to fastening with the

bolts

55 and 56. For example, the dorsal support member 53 may be fixed to at least one of the outer support member 52, the inner support member 51, the second outer block 42, and the second inner block 32 by welding or adhesion.

8A-8F show an example of a method for fixing the support unit 50 to the plurality of magnetic pole units 30 in the radial direction of rotation.

In the first example shown in FIG. 8A, a plurality of through holes are formed in the outer support member 52. The plurality of through holes penetrate the portion in the outer support member 52 in the radial direction to a portion facing the first outer core 411 of each of the plurality of first outer blocks 41 in the radial direction. It is formed to do so. On the other hand, screw holes (not shown) facing the outside in the radius of gyration are formed in each of the first outer cores 411. A plurality of bolts 57 are inserted into the plurality of through holes formed in the outer support member 52, and the male screws of the bolts 57 are screwed into the screw holes formed in the first outer core 411. As a result, the outer support member 52 is fixed to the plurality of magnetic pole units 30. The plurality of bolts 57 may be screwed to the second outer core 421 instead of the first outer core 411, or are screwed to both the first and second

outer cores

411 and 421. Is also good.

In the second example shown in FIG. 8B, a plurality of through holes are formed in the inner support member 51. The plurality of through holes so as to penetrate the portion of the inner support member 51 so as to penetrate the portion of the first inner block 31 facing the first inner core 311 in the radial direction. , Is formed. On the other hand, screw holes are formed in each of the first inner iron cores 311. A plurality of bolts 58 are inserted into the plurality of through holes formed in the inner support member 51, and a male screw of each of the plurality of bolts 58 is screwed into the screw hole formed in the first inner core 311. As a result, the inner support member 51 is fixed to the plurality of magnetic pole units 30. The plurality of bolts 58 may be screwed to the second inner core 321 instead of the first inner core 311 or may be screwed to both the first and second

inner cores

311, 321. good.

In the third example shown in FIG. 8C, a plurality of through holes are formed in the outer support member 52, and the plurality of through holes are the first outer core 411 adjacent to each other in the rotation direction in the outer support member 52. It is formed at a portion facing the permanent magnet 412 interposed between the two. A screw hole (not shown) is formed in the permanent magnet 412. A plurality of bolts 57 are inserted into the plurality of through holes, respectively, and screwed into the screw holes formed in the permanent magnets 412, respectively. As a result, the outer support member 52 is fixed to the plurality of magnetic pole units 30. The plurality of bolts 57 may be screwed into a permanent magnet 422 interposed between the second outer cores 421 adjacent to each other in the rotation direction, or may be interposed between the first outer cores 411. It may be screwed into both the permanent magnet 412 and the permanent magnet 422 interposed between the second outer cores 421.

In the fourth example shown in FIG. 8D, a recess (not shown) is formed on the outer peripheral surface of each of the first outer cores 411, and the recess is recessed inward in the radial direction from the outer peripheral surface. A plurality of pins 59 shown in FIG. 8D are fitted into the recesses, and each of the plurality of pins 59 can be fitted into a through hole formed in the outer support member 52 and the recess. Form a column. By fitting the plurality of pins 59, the outer support member 52 is fixed to each of the plurality of magnetic pole units 30. The plurality of pins 59 may be fitted to the second outer core 421, or may be fitted to both the first outer core 411 and the second outer core 421.

The fifth example and the sixth example shown in FIGS. 8E and 8F are a combination of the first to fourth examples shown in FIGS. 8A to 8D, respectively. In the fifth example shown in FIG. 8E, a plurality of through holes are formed in the outer support member 52 to penetrate the outer support member 52 in the radius of gyration direction, and a plurality of bolts 57 are respectively formed in the plurality of through holes in the direction of the radius of gyration. The male screw of the bolt 57 is screwed into the screw hole formed in each of the plurality of first outer cores 411. On the other hand, the inner support member 51 is also formed with a plurality of through holes penetrating the inner support member 51 in the radial direction of rotation, and a plurality of bolts 58 are inserted into the plurality of through holes in the radial direction of rotation to form a plurality of first inner cores. It is screwed into the screw holes formed in 311 respectively. As a result, both the inner support member 51 and the outer support member 52 are fixed to the plurality of magnetic pole units 30. The sixth example shown in FIG. 8F includes the plurality of through holes and the plurality of through holes and the plurality of bolts 58 more than the plurality of through holes and the plurality of bolts 57 shown in FIG. 8E. In addition to the bolts 58 screwed into the plurality of first outer cores 411, the bolts 58 screwed into the screw holes formed in the permanent magnets 412 are included.

The means for fixing the inner support member 51 and the outer support member 52 to the plurality of magnetic pole units 30 is not limited to fastening with the

bolts

57 and 58 or fitting the plurality of pins 59. For example, the inner support member 51 and the outer support member 52 may be fixed to the plurality of magnetic pole units 30 by welding or adhesion.

As described above, the magnetic pole element 20 is a plurality of first inner cores 311 which is an example of a plurality of first cores and a plurality of inner cores, and a plurality of second cores and a plurality of inner cores. A plurality of second inner cores 321 and a plurality of first permanent magnets and a plurality of inner permanent magnets. Example: A plurality of permanent magnets 312 and a plurality of second permanent magnets and a plurality of inner permanent magnets. The plurality of permanent magnets 322, which are magnets, and a support unit 50 for supporting the plurality of

inner cores

311, 321 and the plurality of inner

permanent magnets

312, 322 are provided. The plurality of

permanent magnets

312 and 322 have armature facing surfaces (rotor magnetic pole surfaces 315,) facing the armature 10 among the plurality of outer surfaces of the first inner core 311 and the second inner core 321. It is arranged so as to cover the outer surface selected from the outer surfaces except 325). Each of the plurality of

permanent magnets

312 and 322 includes a

main surface

313 and 323 facing the first inner core 311 and the second inner core 321 respectively.

The support unit 50 includes the inner support member 51 and the dorsal support member 53. The inner support member 51 is arranged inside the first inner core 311 and the second inner core 321 in the radial direction of rotation to cover the inner peripheral surfaces thereof, and the first inner core 311 and the second inner core 311. It suppresses the inner iron core 321 from moving inward in the radius of gyration. The back side support member 53 covers the surface of the first and second

inner cores

311, 321 opposite to the armature 10, that is, the surface on the second axial direction side, and the inner support member 51. The first inner core 311 and the second inner core 321 and the plurality of permanent magnets (for example, the permanent magnets 312 and 322) are sandwiched between the plurality of inner protrusions 51a in the rotation axis direction. Suppresses movement in the direction of the rotation axis.

Further, the magnetic pole element 20 has a plurality of first outer cores 411 which are a plurality of first cores and a plurality of outer cores, and a plurality of second outer cores which are a plurality of second cores and are a plurality of outer cores. An iron core 421, a plurality of permanent magnets 412 which are a plurality of first permanent magnets and are a plurality of outer permanent magnets, and a plurality of permanent magnets 422 which are a plurality of second permanent magnets and are a plurality of outer permanent magnets. To be equipped with. The plurality of outer

permanent magnets

421 and 422 have armature facing surfaces (rotor magnetic pole surfaces 415) facing the armature 10 among the plurality of outer surfaces of the first outer core 411 and the second outer core 421. , 425) are arranged so as to cover the outer surface selected from the outer surfaces. Each of the plurality of

permanent magnets

421 and 422 includes a

main surface

413 and 423 facing the first outer core 411 and the second outer core 421, respectively.

The support unit 50 further includes the outer support member 52. The outer support member 52 is arranged outside the first outer core 411 and the second outer core 421 in the radial direction of rotation to cover the outer peripheral surfaces thereof, and the first outer core 411 and the second outer side. It suppresses the movement of the iron core 421 to the outside. In other words, the inner support member 51 and the outer support member 52 have the plurality of

iron cores

311, 321 and 411, 421 and the plurality of

permanent magnets

312, 322, 421 and 422 placed between them in the radial direction of rotation. Support while sandwiching between. Further, the back side support member 53 covers the surface of the first and second

outer cores

411 and 421 opposite to the armature 10, that is, the surface on the second axial direction side, and the outer support member. The first outer core 411, the second outer core 421, and the plurality of permanent magnets (for example, the permanent magnets 421 and 422) are sandwiched between the plurality of outer protrusions 52a of 52 in the direction of the rotation axis. Suppresses the movement in the axial direction.

The outer surface of the plurality of iron cores includes a plurality of open surfaces opened without facing the permanent magnet, and the plurality of open surfaces include a plurality of armature facing surfaces (rotor magnetic pole surfaces 315, 325, 415). , 425), the inner support member facing surface facing the inner support member 51 in the radial direction of rotation, and the inner peripheral surface of the first and second

inner cores

311, 321 in the embodiment. A plurality of outer support member facing surfaces facing the outer support member 52 in the radial direction of rotation, and the outer peripheral surfaces of the first and second

outer cores

411 and 421 in the embodiment. A part of the open surface of the above is coupled to the support unit 50. In other words, the support unit 50 covers the outer surface of the plurality of

iron cores

311, 321, 411, 421 that allows magnetic flux to leak and does not contribute to output, whereby other magnetism is applied to the surface. Prevents the body from coming into close contact with or coming into contact with each other. This suppresses the decrease of the magnetic flux that does not contribute to the output leaks from the plurality of

iron cores

311, 321 and 411, 421 and contributes to the output, that is, the magnetic flux toward the armature 10. Make it possible. Therefore, the magnetic monopole 20 makes it possible to improve the magnetic efficiency of the motor 1.

The magnetic monopole 20 was superposed in the direction of the rotation axis with an intermediate permanent magnet interposed between the first inner core 311 and the first outer core 411 and the second inner core 321 and the second outer core 421. Although it has a double structure, the present invention has a structure other than that, for example, a magnetic pole in which the number of iron cores in the rotation axis direction is 1, for example, a magnetic pole in which the second inner core 321 and the second outer core 421 are omitted. Also includes children. The magnetic monopole according to this aspect is arranged on the second axial direction side of the plurality of iron cores (for example, the plurality of first inner cores 311 and the plurality of first outer cores 411), and each of the plurality of iron cores. It is preferable to provide a magnetic material, that is, a back yoke, which is connected to the magnet via a permanent magnet. The back yoke allows magnetic flux to flow between the plurality of iron cores, enabling high magnetization efficiency to be ensured.

FIG. 9 is a cross-sectional front view of the motor 2 according to the second embodiment of the present invention, showing a cross section corresponding to the cross section shown in FIG.

The electric motor 2 is an axial gap type electric motor having a double stator structure, which includes a rotating shaft 5 and a pair of

armatures

10A and 10B. The pair of

armatures

10A and 10B are arranged at intervals in the rotation axis direction parallel to the central axis of the rotation axis 5, and are arranged so as to be symmetrical with respect to a plane orthogonal to the rotation axis direction. Orthogonal. The pair of

armatures

10A and 10B form a magnetic field that rotates the magnetic monopole 20 around the central axis of the rotating shaft 5. Hereinafter, the differences between the second embodiment and the first embodiment will be described. The same reference numerals are given to the elements common to the first embodiment and the second embodiment, and detailed description thereof will be omitted.

The magnetic monopole 60 includes a plurality of iron cores, a plurality of permanent magnets, and a support unit 100.

The plurality of iron cores are arranged in a direction including the rotation direction, that is, in this embodiment, the rotation direction, the radius of gyration, and the axis of rotation. Each of the plurality of iron cores is a soft magnetic material and has a plurality of outer surfaces, six outer surfaces in this embodiment.

The plurality of iron cores and the plurality of permanent magnets according to this embodiment constitute a plurality of magnetic pole units 70. Each of the plurality of magnetic pole units 70 corresponds to the first inner core 71 corresponding to the first inner core 311 and the second inner core 72 corresponding to the second inner core 321 and the first outer core 411. The first outer core 73 and the second outer core 74 corresponding to the second outer core 421 are included.

As shown in FIG. 10, each of the plurality of magnetic pole units 70 is a permanent magnet included in the plurality of permanent magnets and is a permanent magnet interposed between the iron cores adjacent to each other among the plurality of iron cores, that is, , Inner Z magnet 81, outer Z magnet 82, first R magnet 83, second R magnet 84, first inner θ magnet 85, second inner θ magnet 86, first outer θ magnet 87 and second outer θ magnet 88. include. The inner Z magnet 81 is a permanent magnet interposed between the first inner core 71 and the second inner core 72 in the direction of the rotation axis, that is, an intermediate permanent magnet. The outer Z magnet 82 is a permanent magnet interposed between the first outer core 73 and the second outer core 74 in the direction of the rotation axis, that is, an intermediate permanent magnet. The first R magnet 83 is a permanent magnet interposed between the first inner core 71 and the first outer core 73 in the radial direction of rotation. The second R magnet 84 is a permanent magnet interposed between the second inner core 72 and the second outer core 74 in the radial direction of rotation. The first inner θ magnet 85 is a permanent magnet interposed between the first inner core 71 and the first inner core 71 of another magnetic pole unit 70 adjacent to the magnetic pole unit 70 in the rotational direction, that is, , The inner permanent magnet and the first permanent magnet. The second inner θ magnet 86 is a permanent magnet interposed between the second inner core 72 and the second inner core 72 of the magnetic pole unit 70 and another magnetic pole unit 70 adjacent to each other in the rotational direction, that is. , An inner permanent magnet and a second permanent magnet. The first outer θ magnet 87 is a permanent magnet interposed between the first outer core 73 and the first outer core 73 of the magnetic pole unit 70 and another magnetic pole unit 70 adjacent to each other in the rotational direction. It is the first permanent magnet and the outer permanent magnet. The second outer θ magnet 88 is a permanent magnet interposed between the second outer core 74 and the second outer core 74 of the magnetic pole unit and another magnetic pole unit 70 adjacent to each other in the rotational direction, that is, the outer side. It is a permanent magnet and is a second permanent magnet.

The inner Z magnet 81 is the permanent magnet 312 interposed between the first inner core 311 and the second inner core 321 in the direction of the rotation axis among the plurality of permanent magnets according to the first embodiment. It is a permanent magnet in which the permanent magnets 322 are integrated with each other, and corresponds to an intermediate permanent magnet. The outer Z magnet 82 is the permanent magnet 412 interposed between the first outer core 411 and the second outer core 421 in the direction of the rotation axis among the plurality of permanent magnets according to the first embodiment. It is a permanent magnet in which the permanent magnets 422 are integrated with each other, and corresponds to an intermediate permanent magnet. The first R magnet 83 is the permanent magnet 312 interposed between the first inner core 311 and the first outer core 411 in the turning radius direction among the plurality of permanent magnets according to the first embodiment. It is a permanent magnet in which the permanent magnet 412 and the permanent magnet 412 are integrated with each other. The second R magnet 84 is the permanent magnet 322 interposed between the second inner core 321 and the second outer core 421 in the turning radius direction among the plurality of permanent magnets according to the first embodiment. And the permanent magnet 422 is a permanent magnet in which the permanent magnets 422 are integrated with each other.

The first inner θ magnet 85 integrally integrates two permanent magnets 312 interposed between the first inner cores 311 adjacent to each other in the rotation direction among the plurality of permanent magnets according to the first embodiment. It corresponds to the inner permanent magnet and corresponds to the first permanent magnet. The second inner θ magnet 86 integrally integrates two permanent magnets 322 interposed between the second inner cores 321 adjacent to each other in the rotation direction among the plurality of permanent magnets according to the first embodiment. It is a permanent magnet, which corresponds to an inner permanent magnet and a second permanent magnet. The first outer θ magnet 87 integrally integrates two permanent magnets 412 interposed between the first outer cores 411 adjacent to each other in the rotation direction among the plurality of permanent magnets according to the first embodiment. It is a permanent magnet, which corresponds to the outer permanent magnet and corresponds to the first permanent magnet. The second outer θ magnet 88 includes two permanent magnets 422 arranged between the second outer cores 421 adjacent to each other in the rotation direction among the plurality of permanent magnets according to the first embodiment. It is an integrated permanent magnet, which corresponds to an outer permanent magnet and a second permanent magnet.

The first inner core 71 and the second inner core 72 have shapes symmetrical with respect to the plane orthogonal to the rotation axis direction. The first inner core 71 has a recess 711, and the recess 711 is located at the inner end portion in the radius of gyration of the outer surface of the plurality of outer surfaces of the first inner core 71 facing the first axial direction. It is formed over the entire area in the rotation direction and is recessed in the rotation axis direction from the outer surface. The second inner core 72 has a recess 721, and the recess 721 is located at the inner end portion in the radius of gyration of the outer surface of the plurality of outer surfaces of the second inner core 72 facing the second axial direction. It is formed over the entire area in the rotation direction and is recessed in the rotation axis direction from the outer surface. The first inner core 71 further has a recess 712, and the recess 712 is an inner end portion in the radius of gyration direction of the surface of the plurality of outer surfaces of the first inner core 71 facing the second axial direction. It is formed in the central portion in the rotation direction, and is recessed in the rotation axis direction from the outer surface. The second inner core 72 further has a recess 722, and the recess 722 is the center of the plurality of outer surfaces at the inner end in the radial direction of the surface facing the first axial direction. It is formed in a portion and is recessed from the outer surface in the direction of the rotation axis.

The first outer core 73 and the second outer core 74 have a shape symmetrical with respect to a plane orthogonal to the rotation axis direction. The second inner core 73 has a recess 731, and the recess 731 is located at the outer end portion in the radius of gyration of the outer surface of the plurality of outer surfaces of the second inner core 73 facing the first axial direction. It is formed over the entire area in the rotation direction and is recessed in the rotation axis direction from the outer surface. The second outer core 74 has a recess 741, and the recess 741 is located at the outer end portion in the radius of gyration of the outer surface of the plurality of outer surfaces of the second outer core 74 facing the second axial direction. It is formed over the entire area in the rotation direction and is recessed in the rotation axis direction from the outer surface. The first outer core 73 further has a recess 732, and the recess 732 is an outer end portion in the radius of gyration direction of the surface of the plurality of outer surfaces of the first outer core 73 facing the second axial direction. It is formed in the central portion in the rotation direction and is recessed from the outer surface in the rotation axis direction. The second outer core 74 has a recess 742, and the recess 742 is the center of the rotation direction at the outer end of the plurality of outer surfaces of the second outer core 74 facing the first axial direction. It is formed in a portion and is recessed from the outer surface in the direction of the rotation axis.

Each of the plurality of outer surfaces of the iron cores 71 to 74 includes an open surface opened so as to face any of the pair of

armatures

10A and 10B, and the open surface is a rotor magnetic pole which is an armature facing surface. It constitutes a surface 75. The rotor magnetic pole surface 75 constitutes the same magnetic pole as the magnetic pole formed by the main surface of each of the plurality of permanent magnets.

The inner Z magnet 81 has an inner peripheral surface and an outer peripheral surface. The inner peripheral surface has the same diameter as the inner peripheral surface of the first inner iron core 71, that is, the inner peripheral support member facing surface. The outer peripheral surface has the same diameter as the outer peripheral surface of the first inner iron core 71. The inner Z magnet 81 has a dimension larger than the dimension of the first inner core 71 in the rotation direction.

The outer Z magnet 82 also has an inner peripheral surface and an outer peripheral surface. The inner peripheral surface has the same diameter as the inner peripheral surface of the first outer core 73. The outer peripheral surface has the same diameter as the outer peripheral surface of the second inner core 73, that is, the outer support member facing surface. The outer Z magnet 82 has a dimension larger than the dimension of the second inner core 73 in the rotation direction.

The first R magnet 83 has an inner peripheral surface and an outer peripheral surface. The inner peripheral surface has the same diameter as the outer peripheral surface of the first inner core 71. The inner peripheral surface of the first R magnet 83 has the same dimensions as the outer peripheral surface of the first inner iron core 71 in the rotation direction. Further, the inner peripheral surface of the first R magnet 83 has the same dimensions as the outer peripheral surface of the first inner iron core 71 in the rotation axis direction. The outer peripheral surface of the first R magnet 83 has the same diameter as the inner peripheral surface of the first outer core 73, and the outer peripheral surface of the first R magnet 83 has the same outer peripheral surface as the first outer core in the rotation direction. It has the same dimensions as the inner peripheral surface of 73. Further, the outer peripheral surface of the first R magnet 83 has the same dimensions as the inner peripheral surface of the first outer core 73 in the rotation axis direction. The first R magnet 83 has both end faces in the direction of the rotation axis, and the end faces have the same shape as each other. The first R magnet 83 has both end faces in the rotation direction and a pair of convex portions 831, and the pair of convex portions 831 project from both end faces in the rotation direction in the rotation direction.

The second R magnet 84 has a shape similar to that of the first R magnet 83, and detailed description thereof will be omitted. The first R magnet 83 and the second R magnet 84 are the end faces of the first R magnet 83 in the rotation axis direction facing the second axis direction and both ends of the second R magnet 84 in the rotation axis direction. Of the surfaces, the end faces facing the first axial direction are arranged so as to be in contact with each other. As a result, the end surface of the first R magnet 83 on the first axial direction side is located on the second axial direction side of the end surface of the first inner iron core 71 on the first axial direction side. Further, the end surface of the second R magnet 84 on the second axial direction side is located on the first axial direction side of the end surface of the first inner iron core 71 on the second axial direction side.

The first inner θ magnet 85 has a substantially linear shape extending in the radius of gyration, and has a dimension larger than the dimension of the first inner core 71 in the direction of the radius of gyration. A pair of convex portions 851 are formed at the outer end portions of the first inner θ magnet 85 in the radial direction of rotation, and the pair of convex portions 851 project in the rotational direction from both end faces in the rotational direction. .. The first inner θ magnet 85 has a dimension smaller than the dimension of the first inner core 71 in the direction of the rotation axis. The first inner θ magnet 85 has a dimension smaller than the dimension of the first inner core 71 in the rotation direction. The second inner θ magnet 86 has a shape similar to that of the first inner θ magnet 85, and detailed description thereof will be omitted.

The first outer θ magnet 87 has a substantially linear shape extending in the radius of gyration, and has a dimension larger than the dimension of the first outer core 73 in the direction of the radius of gyration. A pair of convex portions 871 are formed at the inner end portions of the first outer θ magnet 87 in the radial direction of rotation, and the pair of convex portions 871 project in the rotational direction from both end faces in the rotational direction. .. The first outer θ magnet 87 has a dimension smaller than the dimension of the first outer core 73 in the direction of the rotation axis. The first outer θ magnet 87 has a dimension smaller than the dimension of the first outer core 73 in the rotation direction. The second outer θ magnet 88 has a shape similar to that of the first outer θ magnet 87, and detailed description thereof will be omitted.

The magnetic pole element 60 further includes a support unit 100 that supports the plurality of magnetic pole units 70. The support unit 100 includes an inner support member 110 and an outer support member 120 shown in FIGS. 11 and 12, and a plurality of intermediate support members 151 shown in FIG. 13B. The plurality of intermediate support members 151 are permanent magnets selected from the permanent magnets interposed between the plurality of inner cores and the plurality of outer cores among the plurality of permanent magnets, and are mutually in the rotational direction. It intervenes between adjacent permanent magnets. Specifically, the plurality of intermediate support members 151 are between the first inner θ magnet 85 and the first outer θ magnet 87, and between the second inner θ magnet 86 and the second outer θ magnet 88. , And, among the plurality of magnetic pole units 70, they are arranged in the gap between the first R magnet 83 and the second R magnet 84 of the magnetic pole units 70 adjacent to each other in the rotation direction. Each of the plurality of intermediate support members 151 has a rectangular parallelepiped shape.

The magnetic monopole 60 further includes a first magnet holding member 152, a second magnet holding member 153, a first inner core holding member 154, a second inner core holding member 155, and a first outer core holding member 156. It is provided with a second outer core holding member 157. The first magnet holding member 152 is arranged on the first axial direction side of the first R magnet 83, the first inner θ magnet 85, and the first outer θ magnet 87, respectively, and the

magnets

83, 85, 87. Suppresses the movement toward the first axis direction. The second magnet holding member 153 is arranged on the second axial direction side of the second R magnet 84, the second inner θ magnet 86, and the second outer θ magnet 88, respectively, and the

magnets

84, 86, 88. Suppresses the movement toward the second axis direction. The first inner core holding member 154 is fitted into the recess 711 of the first inner core 71 to prevent the first inner core 71 from moving toward the first axial direction. The second inner core holding member 155 is fitted into the recess 721 of the second inner core 72 to prevent the second inner core 72 from moving toward the second axial direction. The first outer core holding member 156 is fitted into the recess 731 of the first outer core 73 to prevent the first outer core 73 from moving toward the first axial direction. The second outer core holding member 157 is fitted into the recess 741 of the second outer core 74 to prevent the second outer core 74 from moving toward the second axial direction.

FIG. 11 shows the inner support member 110 and the outer support member 120 of the support unit 100. The inner support member 110 is provided inside the plurality of magnetic pole units 70 in the radial direction of rotation. The outer support member 120 is provided outside the plurality of magnetic pole units 70 in the radial direction of rotation.

The inner support member 110 includes a cylindrical support member main body 115, a plurality of protrusion groups 180, and a plurality of convex portions 185. The plurality of protrusions 180 are arranged in the rotational direction corresponding to the plurality of magnetic pole units 70. Each of the plurality of protrusion groups 180 is composed of a pair of left side protrusion rows 181 and right side protrusion rows 182 arranged at intervals in the rotation direction. The left and right projection rows 181, 182 are located on the left and right sides of the rotation axis 5 in the radial direction, respectively. Each of the pair of left and right protrusion rows 181 and 182 is composed of a plurality of protrusions (four in the example shown in FIG. 11) arranged in the rotation axis direction. Each of the plurality of protrusions has a substantially rectangular parallelepiped shape, and protrudes outward from the outer peripheral surface of the support member main body 115 in the radius of gyration direction. The number of the plurality of protrusions 180 is equal to the number of the plurality of magnetic pole units 70. The plurality of convex portions 185 are formed at two positions arranged in the rotation axis direction between the left side and right side projection rows 181, 182 in each of the plurality of protrusion groups 180, and at each of the positions, the said. It projects outward from the outer peripheral surface of the support member main body 115 in the radius of gyration direction. The inner support member 110 can be divided in the rotation direction. Specifically, the inner support member 110 is composed of a plurality of inner support member elements that can be aligned in the rotational direction and separated from each other, and by connecting the plurality of inner support member elements to each other, the figure is shown. The substantially cylindrical inner support member 110 as shown in 11 is formed.

The outer support member 120 includes a cylindrical support member main body 125, a plurality of protrusion groups 130, and a plurality of convex portions 140. The plurality of protrusions 130 are arranged in the rotational direction corresponding to the plurality of magnetic pole units 70. Each of the plurality of protrusion groups 130 is composed of a pair of left side protrusion rows 131 and right side protrusion rows 132 arranged at intervals in the rotation direction. The left and

right projection rows

131 and 132 are located on the left and right sides of the rotation axis 5 in the radial direction, respectively. Each of the pair of left and

right protrusion rows

131 and 132 is composed of a plurality of protrusions (four in the example shown in FIG. 11) arranged in the rotation axis direction. Each of the plurality of protrusions has a substantially rectangular parallelepiped shape, and protrudes inward in the radial direction from the inner peripheral surface of the support member main body 125. The number of the plurality of protrusions 130 is equal to the number of the plurality of magnetic pole units 70. The plurality of convex portions 140 are formed at two positions aligned in the rotation axis direction between the left side and right

side projection rows

131 and 132 in each of the plurality of protrusion groups 130, and at each of the positions. It projects inward in the radial direction from the inner peripheral surface of the support member main body 125. The outer support member 120 can be divided in the rotation direction. Specifically, the outer support member 120 is composed of a plurality of outer support member elements that can be aligned in the rotational direction and separated from each other, and by connecting the plurality of outer support member elements to each other, the figure is shown. The outer support member 120 having a substantially cylindrical shape as shown in No. 11 is formed.

Since the plurality of protrusion groups 130 and the plurality of protrusion groups 180 are the same, the plurality of protrusion groups 130 will be described in detail below as a representative. The left side protrusion row 131 in the plurality of protrusion groups 130 is four rectangular protrusions linearly arranged from the first axial direction side to the second axial direction side, that is, the first left side protrusion 131a and the second left side. Includes a protrusion 131b, a third left side protrusion 131c and a fourth left side protrusion 131d. The right side protrusion row 132 has four rectangular parallelepiped protrusions linearly arranged from the first axial direction side to the second axial direction side, that is, a first right side protrusion 132a, a second right side protrusion 132b, and a third right side protrusion. Includes 132c and a fourth right projection 132d.

The distance between the left side protrusion row 131 and the right side protrusion row 132 in the rotation direction is such that the iron core of the corresponding magnetic pole unit 70 is held between the left side and the right

side protrusion rows

131 and 132 in the rotation direction of the iron core. It is set to suppress movement. For example, the distance between the second left side protrusion 131b and the second right side protrusion 132b in the rotation direction is the same as the rotation direction dimension of the first outer core 73, and the rotation direction dimension of the outer Z magnet 82. Smaller than. The distance between the second left side protrusion 131b and the second right side protrusion 132b and the third left side protrusion 131c and the third right side protrusion 132c in the rotation axis direction is the dimension of the outer Z magnet 82 in the rotation axis direction. Is the same as. This means that the outer Z magnet 82 is fitted between the second left side protrusion 131b and the second right side protrusion 132b and the third left side protrusion 131c and the third right side protrusion 132c to move in the direction of the rotation axis. Allows to be suppressed. The first outer core 73 is formed between the first left side protrusion 131a and the second left side protrusion 131b and the first right side protrusion 132a and the second right side protrusion 132b in the first axial direction of the outer Z magnet 82. Placed on the side. At that time, one of the two convex portions 140 is housed in the concave portion 731 of the first outer core 73. The second outer core 74 is formed between the third left projection 131c and the fourth left projection 131d and the third right projection 132c and the fourth right projection 132d in the second axial direction of the outer Z magnet 82. Placed on the side. At that time, the other of the two convex portions 140 is housed in the concave portion 741 of the second outer core 74.

The first left projection 131a in any projection group 130 among the plurality of projection groups 130, the first right projection 132a in a projection group 130 adjacent to the arbitrary projection group 130 in the rotational direction, and the arbitrary projection group 130. The distance between the second left projection 131b of the projection group 130 and the second right projection 132b in the projection group 130 adjacent to the arbitrary projection group 130 in the rotation direction in the rotation axis direction is the first outer θ. It is the same as the dimension of the magnet 87 in the direction of the rotation axis. Further, the first left projection 131a in any projection group 130 among the plurality of projection groups 130, and the first right projection 132a of the projection group 130 adjacent to the arbitrary projection group 130 in the rotational direction. The distance in the rotation direction of the first outer θ magnet 87 is smaller than the dimension in the rotation direction of the first outer θ magnet 87. These things mean that the first outer θ magnet 87 has the first left projection 131a in the arbitrary projection group 130, the first right projection 132a of the projection group 130 adjacent thereto, and the first right projection 132a in the arbitrary projection group 130. 2 It is fitted between the left side protrusion 131b and the second right side protrusion 132b of the protrusion group 130 adjacent thereto, and makes it possible to suppress the movement in the rotation axis direction. At that time, the pair of convex portions 871 of the first outer θ magnet 87 is, for example, from the first left projection 131a of the arbitrary projection group 130 and the first right projection 132a of the projection group 130 adjacent thereto. Is also located inside the radius of gyration.

Similarly, the third left projection 131c in any projection group 130 among the plurality of projection groups 130, the third right projection 132c of the projection group 130 adjacent to the arbitrary projection group 130 in the rotational direction, and the third right projection 132c. The distance between the fourth left projection 131d in the arbitrary projection group 130 and the fourth right projection 132d in the projection group 130 adjacent to the arbitrary projection group 130 in the rotation direction is the second in the rotation axis direction. It is the same as the dimension of the outer θ magnet 88 in the direction of the rotation axis. Further, the distance between the third left projection 131c in the arbitrary projection group 130, the arbitrary projection group 130, and the third right projection 132c of the projection group 130 adjacent in the rotation direction in the rotation direction is the above. It is smaller than the dimension of the second outer θ magnet 88 in the rotation direction. These things are that the second outer θ magnet 88 has the third left projection 131c in the arbitrary projection group 130, the third right projection 132c in the projection group 130 adjacent thereto, and the third right projection 132c in the arbitrary projection group 130. It is fitted between the fourth left side protrusion 131d and the fourth right side protrusion 132d in the protrusion group 130 adjacent thereto, and makes it possible to suppress the movement in the rotation axis direction.

As described above, the outer support member 120 including the plurality of protrusion groups 130 suppresses the movement of the outer Z magnet 82, the first outer θ magnet 87, and the second outer θ magnet 88. It is possible to hold 82,87,88. Similarly, the inner support member 110 including the plurality of protrusions 180 suppresses the movement of the inner Z magnet 81, the first inner θ magnet 85, and the second inner θ magnet 86. , 85, 86 can be held. The relative relationship between the size of each of the plurality of protrusions 180 included in the inner support member 110 and the sizes of the inner Z magnet 81, the first inner θ magnet 85, and the second inner θ magnet 86 is determined. Similar to the relative relationship between the sizes of the plurality of protrusions 130 included in the outer support member 120 and the sizes of the outer Z magnet 82, the first outer θ magnet 87, and the second outer θ magnet 88. Therefore, a detailed description will be omitted.

Next, an example of the method for manufacturing the magnetic monopole 60 will be described with reference to FIGS. 12A to 12D and FIGS. 13A to 13D. This method includes a preparation step, an inner mounting step, an outer mounting step, a subunit forming step, and a support member element joining step.

In the preparatory step, a plurality of outer support member elements 120E, a plurality of inner support member elements 110E, a plurality of inner cores, a plurality of outer cores, a plurality of inner permanent magnets, and a plurality of outer permanent magnets are prepared.

The plurality of outer support member elements 120E are elements capable of forming the outer support member by being arranged in the rotational direction and being coupled to each other. In the method according to this example, the outer support member 120 is divided into two, so that the number of the outer support member elements 120E is two. That is, in this embodiment, the outer support member element 120E having a substantially semicircular arc shape as shown in FIG. 12A is prepared.

The plurality of inner support member elements 110E are elements capable of forming the inner support member 110 by being arranged in the rotational direction and being coupled to each other. In the method according to this example, the inner support member 110 is divided into two, and therefore the number of the inner support member elements 110E is also two.

The plurality of outer cores include the first outer core 73 and the second outer core 74 in each of the plurality of magnetic pole units 70. The plurality of inner cores include the first inner core 71 and the second inner core 72 in each of the plurality of magnetic pole units 70. The plurality of outer permanent magnets are the outer Z magnet 82, the first outer θ magnet 87, the second outer θ magnet 88, the first R magnet 83, and the second R magnet 84 in each of the plurality of magnetic pole units 70. including. The plurality of inner permanent magnets include the inner Z magnet 81, the first inner θ magnet 85, and the second inner θ magnet 86 in each of the plurality of magnetic pole units 70. The first R magnet 83 and the second R magnet 84 may be included in the plurality of inner permanent magnets.

In the outer mounting step, the outer core and the outer permanent magnet corresponding to the outer support member element 120E among the plurality of outer cores and the plurality of outer permanent magnets are attached to each of the plurality of outer support member elements 120E. ..

The outer mounting step specifically includes a first step, a second step and a third step shown in FIGS. 12B, 12C and 12D, respectively. In the first step, the plurality of protrusions included in the plurality of protrusions 130 belonging to the outer support member element 120E, more specifically, the outer main body element 125E constituting the support member main body 125 of the outer support member 120. The first outer core 73 and the second outer core are between the appropriate protrusions among the plurality of protrusions protruding from the divided support member main body 125 in response to the division of the outer support member 120. 74 and the outer Z magnet 82 are fitted. In the second step, the first outer θ magnet 87 and the second outer θ magnet 88 are between the first outer cores 73 adjacent to each other in the rotation direction and between the second outer cores 74 adjacent to each other in the rotation direction. Each is fitted in between. In the third step, the first R magnet 83 is arranged inside the first outer core 73 in the radial direction, and the second R magnet 84 is arranged inside the second outer core 74 in the radial direction. Will be done.

In the inner mounting step, the inner core and the inner permanent magnet corresponding to the inner support member element 110E among the plurality of inner cores and the plurality of inner permanent magnets are attached to each of the plurality of inner support member elements 110E. .. The inner mounting step includes the following first and second steps as in the outer mounting step. In the first step, the first inner core 71 and the second inner core 72 are between appropriate protrusions among the plurality of protrusions included in the plurality of protrusion groups 180 belonging to the inner support member element 110E. And the inner Z magnet 81 is fitted. In the second step, the first inner θ magnet 85 and the second inner θ magnet 86 are between the first inner cores 73 adjacent to each other in the rotation direction and between the second outer cores 74 adjacent to each other in the rotation direction. Each is fitted in between.

In the subunit forming step, the plurality of subunits 60a are formed by combining the outer support member elements 120E and the inner support member elements 110E corresponding to each other in the plurality of outer support member elements 120E and the plurality of inner support member elements 110E. (FIG. 13D) is formed. Specifically, the subunit forming step includes the first step, the second step, the third step and the fourth step shown in FIGS. 13A, 13B, 13C and 13D, respectively.

In the first step, the first inner core 71, the second inner core 72, the inner Z magnet 81, the first inner θ magnet 85, and the second inner θ magnet 86 were attached by the inner mounting step. As shown in FIG. 13A, the inner support member element 110E is arranged inside the outer support member element 120E corresponding to the inner support member element 110E in the radial direction of rotation. At this time, the first R magnet 83 is sandwiched between the first inner core 71 and the first outer core 73, and the second R magnet 84 is formed between the second inner core 72 and the second outer core 74. It is sandwiched between them.

The inner support member element 110E and the outer support member element 120E have sufficient torque transmission between the inner support member element 110E and the outer support member element 120E so that the inner support member element 110E and the outer support member element 120E rotate integrally with each other. It is preferable that they are linked to each other to the extent possible. As an example of the means for the link, the inner support member element 110E and the outer support member element 120E are connected to each other by a connecting member, or the outer support member element 120E and the first and second parts are connected to each other. A torque transmission member such as a pin that penetrates the

outer cores

73 and 74 in the radius of gyration and reaches at least the first and second inner cores 71 and 72 (preferably up to the inner support member element 110E) is described. Insertion from the outside in the radius of gyration is mentioned.

In the second step, the plurality of intermediate support members 151 are arranged. Specifically, as shown in FIG. 13B, the plurality of intermediate support members 151 include the first outer θ magnet 87 and the second outer θ magnet 88, and the first inner θ magnet 85 and the second inner side. It is inserted into the gap between the θ magnet 86 and the magnet 86 in the direction of the rotation axis.

In the third step, as shown in FIG. 13C, the first magnet holding member 152 and the second magnet holding member 153 are end faces of the intermediate support member 151 on the first axial direction side and the second axial direction. It is fixed to each end face on the side. As a result, the first magnet holding member 152 covers the end faces of the first R magnet 83, the first inner θ magnet 85, and the first outer θ magnet 87 on the first axial direction, respectively, and the second. The magnet holding member 153 covers the end faces of the second R magnet 84, the second inner θ magnet 86, and the second outer θ magnet 88 on the second axial direction side, respectively. An example of a method for fixing the first magnet holding member 152 and the second magnet holding member 153 to the intermediate support member 151 is to fasten, weld, weld, bond, or the like with a screw member such as a bolt or a screw. include.

In the fourth step, as shown in FIG. 13D, the iron core restraining members 154 to 157 are arranged. The first inner core holding member 154 is a support member main body 115 of the inner support member 110 so as to restrain the recess 711 in the first inner core 71 on the first axial direction side thereof, more specifically, an inner main body element. 115E, fixed to the end face on the first axial direction side. The inner main body element 115E is an element constituting the support member main body 115, and is a division of the support member main body 115 corresponding to the division of the inner support member 110. The second inner core holding member 155 is fixed to the end surface of the inner body element 115E on the second axial direction so as to restrain the recess 721 in the second inner core 72 on the second axial side. To. The first outer core holding member 156 restrains the recess 731 in the first outer core 73 on the first axial direction side, so that the outer main body element 125E in the outer support member 120 is constrained in the first axial direction. It is fixed to the end face on the side. The outer main body element 125E is an element constituting the support member main body 125, and is a division of the support member main body 125 corresponding to the division of the outer support member 120. The second outer core holding member 157 is fixed to the end surface of the outer body element 125E on the second axial direction so as to restrain the recess 741 in the second outer core 74 on the second axial side. .. An example of a method for fixing the first inner core holding member 154 and the second inner core holding member 155 to the inner main body element 115E, and the first outer core holding member 156 and the second outer core holding member. Examples of methods for fixing the 157 to the outer body element 125E include fastening with screw members such as bolts and screws, welding, welding, and joining by adhesion. By this subunit forming step, a plurality of subunits 60a are formed.

In the support member element coupling step, the inner support member elements 110E of the subunits 60a adjacent to each other in the rotational direction among the plurality of subunits 60a are coupled to each other, and the outer support member elements 120E are coupled to each other. When the plurality of subunits 60a are combined with each other, they are not yet attached to the inner support member element 110E and the outer support member element 120E of the plurality of magnetic pole units 70 between the adjacent subunits 60a. The magnetic pole unit 70 is sandwiched. Alternatively, after the coupling between the plurality of subunits 60a is completed, the iron core or the permanent magnet constituting the remaining magnetic pole unit 70 may be attached. After the combination of the plurality of subunits 60a is completed in this way, the inner support member elements 110E adjacent to each other and the outer support members 120 adjacent to each other are finally interconnected to each other, thereby causing the magnetic monopole. 60 is completed. Examples of such joining methods include welding, welding and gluing.

In the above manufacturing method, specifically, the first outer core 73 and the second outer core 74 are attached to the outer support member element 120E, and the main surface constituting the first magnetic pole of the outer Z magnet 82 is attached. The outer Z magnet 82 faces the first outer core 73 and the first outer core 73 so that the opposite side surface constituting the second magnetic pole opposite to the first magnetic pole faces the second outer core 74. It is fitted between the second outer core 74 and the second outer core 74. After that, the first outer θ magnet 87 is fitted between the first outer cores 73 adjacent to each other in the rotation direction, and the second outer θ is inserted between the second outer cores 74 adjacent to each other in the rotation direction. The magnet 88 is fitted. On the other hand, the first inner core 71 and the second inner core 72 are attached to the inner support member element 110E, and the main surface of the inner Z magnet 81 constituting the first magnetic pole is the first inner core 71. The inner Z magnet 81 faces the first inner core 71 and the second inner core 72 so that the opposite side surface constituting the second magnetic pole opposite to the first magnetic pole faces the second inner core 72. It is fitted between and. After that, the first inner θ magnet 85 is fitted between the first inner cores 71 adjacent to each other in the rotation direction, and the second inner θ is inserted between the second inner cores 72 adjacent to each other in the rotation direction. The magnet 86 is fitted. Further, the first R magnet 83 is arranged between the first outer core 73 and the first inner core 71, and the second R magnet 84 is placed between the second outer core 74 and the second inner core 72. Is placed. Then, the subunit 60a is formed by mutually coupling the outer support member element 120E and the corresponding inner support member element 110E. Further, among the plurality of subunits 60a, the inner support member elements 110E of the subunits 60a adjacent to each other in the rotation direction are joined to each other, and the outer support member elements 120E are joined to each other.

In FIG. 14, the magnetization direction in the cross section obtained by cutting the magnetic pole element 60 on the plane orthogonal to the rotation direction and the plane orthogonal to the radius of gyration direction is indicated by a broken line arrow, and the polarity is S → N. In the example shown in FIG. 14, among the plurality of permanent magnets, the magnetic flux generated from the permanent magnet having the main surface facing the first inner core 71 and the first outer core 73 and forming the S pole is the first inner side. And the

outer cores

71 and 73, respectively, and the respective magnetic fluxes travel in the direction of the rotation axis toward the armature 10A located on the first axial side of the pair of

armatures

10A and 10B. It passes through the rotor magnetic flux surface 75 of the

iron cores

71 and 73 and exits into the gap between the rotor magnetic flux surface 75 and the armature 10A. The magnetic flux branches radially, and the inside of the first inner core 71 and the first outer core 73 having the rotor magnetic pole surface 75 from the rotor magnetic pole surface 75 adjacent to the rotor magnetic pole surface 75 to form an N pole. Enter into. The magnetic flux that has advanced inside the

iron cores

71 and 73 in this way branches in the rotation direction and the rotation radius direction, and further advances in the rotation axis direction, and enters the inner Z magnet 81 or the outer Z magnet 82. The magnetic flux entering the inner Z magnet 81 travels on the second inner core 72 located on the second axial direction side of the inner Z magnet 81, and a plurality of magnetic fluxes provided around the second inner core 72. Since each main surface of the permanent magnet, that is, the surface facing the second inner core 72 constitutes an S pole, the magnetic flux generated from the plurality of permanent magnets travels in the second inner core 72. The magnetic flux travels in the direction of the rotation axis toward the armature 10B on the second axial direction side of the pair of

armatures

10A and 10B, and the rotor magnetic pole surface 75 and the rotor magnetic pole surface 75 and the said. It appears in the gap with the armature 10B. Further, the magnetic flux entering the outer Z magnet 82 travels inside the second outer core 74 located on the second axial direction side thereof, and at the same time, a plurality of permanent magnets provided around the second outer core 74. Magnetic flux generated from a plurality of permanent magnets, each of which is a magnet and whose main surface, that is, a surface facing the second outer core 74 constitutes an S pole, travels in the second outer core 74. Each magnetic flux travels in the direction of the rotation axis toward the armature 10B on the second axis direction side of the pair of

armatures

10A and 10B, and from the rotor magnetic pole surface 75 to the rotor magnetic pole surface 75. It appears in the gap with the armature 10B. The second inner core 72 located on the second axial direction side of the first inner core 71 in which the main surfaces of the plurality of permanent magnets provided around the magnets form an S pole has the second. Since the main surfaces of the plurality of permanent magnets provided around the inner core 72 and the surfaces constituting the N pole face each other, the second inner core 72 and the second outer core 72 adjacent to each other in the radial direction are opposed to each other. The magnetic flux entering the 74 advances toward the first axial direction and enters the first inner core 71.

FIG. 15 is a cross-sectional view showing a magnetic path formed in each of the pair of

armatures

10A and 10B in the motor 2, and the magnetic paths are oriented in opposite directions in the teeth portions 112 adjacent to each other in the radial direction of rotation. The teeth portion 112 facing the rotation axis direction advances in opposite directions to each other. In the electric motor 2, a current in the opposite direction is passed through the coils 12 adjacent to the pair of

armatures

10A and 10B in the turning radius direction, and a current in the same direction is passed through the coils 12 facing in the rotation axis direction. As a result, as shown in FIG. 15, a magnetic path is formed through the teeth portion 112 and the yoke portion 111 connected to the teeth portion 112. As a result, the armature magnetic pole surface 13 which is a surface facing the magnetic pole 60 in one of the two teeth portions 112 adjacent to each other in the radius of gyration constitutes an S pole, and the other teeth. The armature magnetic pole surface 13 of the unit 112 constitutes an N pole. Further, the armature magnetic pole surface 13 of the teeth portion 112 facing the rotation axis direction to the teeth portion 112 having the armature magnetic pole surface 13 constituting the S pole constitutes an N pole.

FIG. 16 is a cross-sectional view showing a magnetic path formed in each of the pair of

armatures

10A and 10B in the motor 2, and the magnetic path is opposite to each other in the tooth portions 112 adjacent to each other in the rotation direction. As it progresses, it travels in opposite directions at the teeth portions 112 facing the rotation axis direction. In the example shown in FIG. 16, in the example, the armature magnetic pole surface 13 of one of the teeth portions 112 adjacent to each other in the rotation direction constitutes an S pole, and the armature magnetic pole of the other teeth portion 112. The surface 13 constitutes the north pole. Further, the armature magnetic pole surface 13 of the teeth portion 112 facing the teeth portion 112 in which the armature magnetic pole surface 13 constitutes an S pole constitutes an N pole.

The armature magnetic pole surface 13 constituting the magnetic poles and the rotor magnetic pole surface 75 facing them are attracted to or repelled from each other by magnetic force. According to the magnetic paths shown in FIGS. 15 and 16, the armature magnetic pole surface 13 and the rotor magnetic pole surface 75 attract each other. Therefore, by controlling the direction and timing of the current flowing through the plurality of coils 12 in each of the pair of

armatures

10A and 10B, the rotation direction and rotation speed of the magnetic pole element 60 can be controlled.

As described above, the magnetic monopole 60 according to the second embodiment includes a plurality of iron cores and a plurality of permanent magnets, and the plurality of iron cores include a first inner core 71 and a second inner core 72. , The plurality of permanent magnets includes the inner Z magnet 81. Further, the magnetic pole element 60 includes a support unit 100 formed of a non-magnetic material, and the support unit 100 is the pair of the outer surfaces of the first inner core 71 and the second inner core 72. The first inner core 71, the second inner core 72, and the inner side while covering at least one surface of the open surface, that is, the surface that does not face any of the

armatures

10A and 10B and that does not face the inner Z magnet 81. Supports the Z magnet 81. Specifically, the support unit 100 includes the inner support member 110, and the inner support member 110 has an inner peripheral surface of each of the first inner core 71 and the second inner core 72, that is, an inner support member facing surface. While covering, the first inner core 71, the second inner core 72 and the inner Z magnet 81 are suppressed from moving inward in the radius of gyration. Further, the magnetic pole element 60 further includes the first inner core holding member 154 and the second inner core holding member 155, which are the first inner core 71, the second inner core 72, and the inner Z magnet 81. Suppresses the movement in the direction of the rotation axis.

Further, the plurality of iron cores further include the first outer core 73 and the second outer core 74, and the plurality of permanent magnets further include the Z magnet 82. Further, the support unit 100 does not face any of the pair of

armatures

10A and 10B among the plurality of outer surfaces of the first outer core 73 and the second outer core 74, and also includes the outer Z magnet 82. The first outer core 73, the second outer core 74, and the outer Z magnet 82 are supported while covering at least one surface that does not face each other. Specifically, the support unit 100 includes the outer support member 120, and the outer support member 120 covers the outer peripheral surfaces of the first outer core 73 and the second outer core 74, that is, the outer support member facing surfaces. At the same time, the first outer core 73, the second outer core 74, and the outer Z magnet 82 are prevented from moving outward in the radius of gyration. Further, the magnetic pole element 60 further includes the first outer core holding member 156 and the second outer core holding member 157, which include the first outer core 73, the second outer core 74, and the outer Z magnet 82. Suppresses the movement in the direction of the rotation axis.

In this way, the support unit 100 covers the surface of each of the plurality of outer surfaces of the

iron core

71, 72, 73, 74 that allows the magnetic flux to leak and does not contribute to the output, thereby covering the other surface. Prevents the magnetic materials from coming into close contact with each other or coming into contact with each other. This makes it possible to suppress the leakage of the magnetic flux that does not contribute to the output from the

iron cores

71, 72, 73, 74, and the decrease of the magnetic flux that contributes to the output, that is, the magnetic flux toward the armature 10. This makes it possible to improve the magnetic efficiency of the electric motor 2.

The outer support member 120 includes a plurality of protrusions that prevent the outer Z magnet 82 from moving to the first outer core 73 or the second outer core 74, and the plurality of protrusions are a group of the plurality of protrusions. Each of the 130 has a second left projection 131b and a third left projection 131c of the left projection row 131, and a second right projection 132b and a third right projection 132c of the right projection row 132. The outer support member 120 including the plurality of outer core restraining protrusions can stably support the outer Z magnet 82. Further, the plurality of protrusions include a plurality of outer core restraint protrusions, and the plurality of outer core restraint protrusions include the second left side protrusion 131b, the second right side protrusion 132b, and the third left side protrusion 131c. It has the third right projection 132c. The second left side protrusion 131b and the second right side protrusion 132b are arranged on the first axial direction side of the outer Z magnet 82, and the third left side protrusion 131c and the third right side protrusion 132c are the outer Z outer magnet. It is arranged on the second axis direction side of 82. The first outer core 73 is arranged between the second left side protrusion 131b and the second right side protrusion 132b, and the second outer core 74 has the third left side protrusion 131c and the third right side protrusion 132c. Placed between. As a result, the outer support member 120 can suppress the movement of the first outer core 73 and the second outer core 74 in the rotational direction.

Further, the magnetic pole element 60 includes the plurality of magnetic pole units 70, and each of the plurality of magnetic pole units 70 includes the plurality of iron cores and the plurality of permanent magnets. The support unit 100 further includes the plurality of intermediate support members 151, and the plurality of intermediate support members 151 are between the magnetic pole units 70 adjacent to each other so as to maintain a distance between the plurality of magnetic pole units 70. Placed in. This prevents the magnetic pole unit 70 or the components constituting the magnetic pole unit 70 from moving in the rotational direction. In addition, the strength against impact from the rotation direction can be increased.

The plurality of intermediate support members 151 include those arranged between the first R magnets 83 of the magnetic pole units 70 adjacent to each other in the radial direction of rotation, whereby the first R magnets 83 are arranged in the direction of rotation. Suppress moving to. This makes it possible to increase the strength against an impact from the rotation direction and suppresses damage to the first R magnet 83. Further, the plurality of intermediate support members 151 include those arranged between the second R magnets 84 of the magnetic pole units 70 adjacent to each other in the rotation direction, whereby the second R magnet 84 is rotated in the rotation direction. Suppress moving. This can increase the strength against the impact from the rotation direction and suppress the damage of the second R magnet 84.

In addition, the first outer θ magnet 87 includes convex portions 871 protruding from both end faces in the rotational direction, wherein the convex portions 871 are the convex portions of the first outer core 73 and the first R magnet 83. It enters the gap between the 831 and the first R magnet 83, thereby suppressing the movement of the first R magnet 83 in the rotational direction. Since the second outer θ magnet 88 has a convex portion similar to the convex portion 871, the movement of the second R magnet 84 in the rotational direction can be suppressed. This can increase the strength against the impact from the rotation direction and suppress the damage of the first R magnet 83 and the R second magnet 84.

Further, the plurality of intermediate support members 151 are arranged in the gap between the first inner θ magnet 85 and the second inner θ magnet 86, and the first outer θ magnet 87 and the second outer θ magnet 88. The first inner θ magnet 85, the second inner θ magnet 86, the first outer θ magnet 87, and the second outer θ magnet 88 are prevented from moving in the radial direction of rotation. .. This can increase the strength against impact from the radius of gyration, and the first inner θ magnet 85, the second inner θ magnet 86, the first outer θ magnet 87, and the second outer θ magnet 88. Suppresses damage.

The magnetic monopole 60 further includes the first inner core holding member 154 and the first outer core holding member 156, and the first inner core holding member 154 is formed in the recess 711 formed in the first inner core 71. The second inner core holding member 156 is fitted into the recess 731 formed in the second inner core 73. These things enable flattening of the surface of the magnetic monopole 60 facing the armature 10A on the first axial direction side, whereby the armature 10A and the magnetic pole 60 are on the first inner side. The gap (air gap) formed between the iron core 71 and the first outer core 73 is reduced. However, the

recesses

711 and 731 are optional. The same applies to the configuration of the magnetic monopole 60 on the second axial direction side.

In the manufacturing method shown in FIGS. 12 and 13, each of the two subunits 60a includes four said magnetic pole units 70, and the other two magnetic pole units 70 are sandwiched between the subunits 60a. The invention is not limited to this aspect.

FIG. 17 shows the subunit 160a according to the modified example. The subunit 160a constitutes a magnetic pole element including 16 magnetic pole units. The subunit 160a includes four magnetic pole units out of the 16 magnetic pole units. That is, the subunit 160a is one of four subunits in which the magnetic monopole is divided at 90 degrees in the rotation direction. In addition to the four magnetic pole units, the subunit 160a includes an inner support member element 210E and an outer support member element 220E in which the inner support member and the outer support member are each divided into four (90 degrees) in the rotational direction. Further included. An annular magnetic pole is formed by connecting four subunits including the subunit 160a in the radial direction of rotation. In this example, the magnetic pole unit is not sandwiched between the subunits adjacent to each other. This makes it possible for all subunits including the subunit 160a to have the same shape and to increase productivity.

Dividing the magnetic pole into the same number of subunits as the divisor of the total number of magnetic pole units contained in the magnetic pole makes it possible to make all the subunits have the same shape. For example, when the number of the magnetic pole units is 16, dividing the magnetic poles into any number of subunits of 2, 4, or 8 makes all the subunits have the same shape. Enables. The divisor also includes the total number of magnetic pole units. That is, even if the magnetic pole element including the 16 magnetic pole units is divided into 16 subunits, all the subunits can have the same shape.

Since the magnetic monopole 60 according to the second embodiment includes the ten magnetic monopole units 70, the magnetic monopole 60 is divided into 2, 5, or 10 subunits, that is, the magnetic pole unit 70. Dividing the total number into subunits including the number of magnetic pole units 70 divided by the number of divisions makes it possible for all subunits to have the same shape. However, the number of divisions of the magnetic pole is not limited to the number that allows all subunits to have the same shape. For example, a magnetic pole containing 10 magnetic pole units is two first subunits, each containing four said magnetic pole units 70, and one second subunit containing two said magnetic pole units. It may be divided into and.

The shape of the end portion of the inner

support member elements

110E and 210E in the rotational direction, that is, the shape of the joint portion of the inner

support member elements

110E and 210E to be joined to the inner support member element adjacent thereto, and the outer support. The shape of the end portion of the

member elements

120E and 220E in the rotational direction, that is, the shape of the joint portion joined to the outer support member element adjacent to the outer

support member elements

120E and 220E is not limited.

In the inner and outer

support member elements

210E and 220E shown in FIG. 17, a plurality of convex portions 201 are provided at one end of each of the inner and outer

support member elements

210E and 220E in the rotational direction, and the other end is provided. A plurality of recesses 202 are provided in the portion. The plurality of convex portions 201 are arranged in the rotation axis direction (vertical direction in FIG. 17), and each protrudes in the rotation direction from the end surface of the one end portion. The plurality of convex portions 201 are intermittently arranged along the first row in the rotation axis direction, and the inner and outer

support member elements

210E and 220E are displaced from the first row in the thickness direction, that is, in the radial direction. The convex portion 201 included in the first row and the convex portion 201 included in the second row include those intermittently arranged along the second row in the rotation axis direction at the above-mentioned position. They are arranged alternately in the direction of the axis of rotation. The plurality of recesses 202 are arranged in the rotation axis direction, and each of the recesses 202 is recessed in the rotation direction from the end surface of the other end portion. The plurality of recesses 202 are intermittently arranged along the first row in the rotation axis direction, and are displaced from the first row in the thickness direction, that is, the radial direction of the inner and outer

support member elements

210E and 220E. The recess 202 included in the first row and the recess 202 included in the second row include those intermittently arranged along the second row in the rotation axis direction at the position in the rotation axis direction. They are lined up alternately. The plurality of protrusions 201 of one of the two inner support member elements 210E and the plurality of outer support member elements 220E adjacent to each other in the rotational direction are the

support member elements

210E and 220E. By being fitted into the plurality of recesses 202 of 210E and 220E, the two inner support member elements 210E can be connected to each other and the two outer support member elements 220E can be connected to each other. In the fitting of the plurality of convex portions 201 and the plurality of concave portions 202, the other inner and outer

support member elements

210E and 220E are in the rotation axis direction with respect to the one inner and outer

support member elements

210E and 220E. And suppresses the deviation in the radius of gyration.

FIG. 18A shows a first modification of the joint portion. FIG. 18A shows a joint portion of the first support member element 200A, which is at least one of the inner support member element and the outer support member element, and a joint portion of the second support member element 200B adjacent to the first support member element 200A. Is shown. In the first modification, a plurality of convex portions 211 arranged in the rotation axis direction are provided at one end of the first and second

support member elements

200A and 200B in the rotation direction, and the other end is provided with the convex portion 211. A plurality of recesses 212 arranged in the direction of the rotation axis are provided. Each of the plurality of convex portions 211 protrudes in the rotational direction from the end surface of the one end portion and forms a columnar shape having a uniform cross section over the entire area in the radial direction of rotation, or a triangular columnar shape in the illustrated example. Each of the plurality of recesses 212 is a columnar shape that is recessed in the rotational direction from the end surface of the other end portion and extends in the radial direction corresponding to each of the plurality of convex portions 211, or a triangular columnar shape in the illustrated example. The plurality of convex portions 211 of the first support member element 200A are the plurality of the second support member element 200B due to the relative movement of the support member element 200A and the second support member element 200B in the radius of gyration. It is possible to fit the first and second

support member elements

200A and 200B into the recess 212 of the above, thereby suppressing the deviation of the first and second

support member elements

200A and 200B in the rotation axis direction and the rotation direction. The number of the plurality of convex portions 211 and the plurality of concave portions 212 is not limited. The number may be 1, 2 or greater as shown in FIG. 18A.

FIG. 18B shows a second modification of the joint portion. In this second modification, the convex portion 221 is provided at one end of each of the first support member element 200A and the second support member element 200B in the rotational direction, and the concave portion 222 is provided at the other end in the rotational direction. Is provided. The convex portion 221 projects in the rotational direction into a columnar shape having a uniform cross section along the rotational direction, or in the example, a shape in which the tops of two triangular prisms are united. The concave portion 222 is recessed in the rotational direction from the end surface of the other end portion to a columnar shape corresponding to the convex portion 221 or a shape in which the tops of two triangular prisms are united in the illustrated example. The convex portion 221 can be fitted into the concave portion 222 of the second support member element 200B by the relative movement of the first and second

support member elements

200A and 200B in the rotational direction. Thereby, the deviation of the first and second

support member elements

200A and 200B in the rotation axis direction and the rotation radius direction is suppressed. The number of the convex portions 221 and the concave portions 222 is not limited, and may be one or a plurality as shown in FIG. 18B. The shapes of the convex portion 221 and the concave portion 222 are not limited, and may be a rectangular parallelepiped shape as in the third modification shown in FIG. 18C, or a cubic shape or a conical shape.

FIG. 18D shows a fourth modification example of the joint portion. In this fourth modification, the convex portion 231 is provided at one end of each of the first support member element 200A and the second support member element 200B in the rotational direction, and the concave portion 232 is provided at the other end. The convex portion 231 protrudes from the end surface of the one end portion in the rotational direction and forms a columnar column having a uniform cross section in the rotational axis direction, or a triangular columnar column in the example. The concave portion 232 is recessed in the rotational direction from the end surface of the other end portion, and forms a columnar shape corresponding to the convex portion 231 or a triangular columnar shape in the illustrated example. The convex portion 231 of the first support member element is fitted into the concave portion 232 of the second support member element 200B by the relative movement of the first and second

support member elements

200A and 200B in the rotation axis direction. This makes it possible to suppress deviations between the first and second

support member elements

200A and 200B in the rotation direction and the radius of gyration. Further, in the fourth modification, as shown in FIG. 18D, abutting

surfaces

233 and 234 are provided at the one end portion and the other end portion, respectively. The abutting

surfaces

233 and 234 abut against each other in the direction of the rotation axis at the position where the protrusion 231 has been fitted into the recess 232, whereby the rotation axes of the first and second

support member elements

200A and 200B. Determine the relative position of the direction.

In the manufacturing method shown in FIGS. 12 and 13, the first magnet holding member 152, the second magnet holding member 153, and the first inner core holding member 154 are used before the plurality of subunits 60a are connected to each other. The second inner core holding member 155, the first outer core holding member 156, and the second outer core holding member 157 are attached, but at least a part of these holding members 152 to 157 is the plurality of subunits 60a. May be attached after the magnets are joined in an annular shape. As described above, the holding member attached after the joining can be formed into a continuous annular shape over the entire circumference.

The method described with reference to FIGS. 8A to 8F, that is, a method for fixing the inner support member 51 and the outer support member 52 to the plurality of magnetic pole units 30 in the radial direction of rotation, is the method for fixing the plurality of magnetic pole units in the radial direction. It can also be applied to the fixation of the support unit 100 to 70 in the radial direction. For example, similar to the method shown in FIG. 8A, a through hole is formed in a portion of the outer support member 120 facing each of the first outer core 73, and a screw hole is formed in each of the first outer core 73. The outer support member 120 is fixed to the plurality of magnetic pole units 70 by a method including forming the bolt 57 and screwing the male screw of the bolt 57 into the screw hole. It is possible. Similarly, in the outer support member 120, a through hole is formed in a portion facing each of the second outer core 74, a screw hole is formed in the second outer core 74, and a bolt is formed in the through hole. 57 may be inserted and the male screw of the bolt 57 may be screwed into the screw hole.

Instead of the method described above, or in addition to the method described above, a method similar to the method shown in FIG. 8B may be performed. In the method, a through hole is formed in a portion of the inner support member 110 facing the first inner core 71, a screw hole is formed in the first inner core 71, and the through hole is shown in FIG. 8B. The inner support member 110 is fixed to the plurality of magnetic pole units 70 by inserting a bolt similar to the bolt 58 shown in the above and screwing a male screw of the bolt into the screw hole. Similarly, in the inner support member 110, a through hole is formed in a portion facing the second inner core 72, a screw hole is formed in the second inner core 72, and the bolt 58 is formed in the through hole. The same bolt as in the above may be inserted and the male screw of the bolt may be screwed into the screw hole.

Instead of the method described above, or in addition to the method described above, a method similar to the method shown in FIG. 8C may be performed. In the method, a through hole is formed in a portion of the outer support member 120 facing each of the first outer θ magnets 87, a screw hole is formed in the first outer θ magnet 87, and the through hole is formed. The outer support member 120 is fixed to the plurality of magnetic pole units 70 by inserting a bolt similar to the bolt 57 shown in FIG. 8C into the hole and screwing a male screw of the bolt into the screw hole. Similarly, in the outer support member 120, a through hole is formed in a portion facing each of the second outer θ magnet 88, a screw hole is formed in the second outer θ magnet 88, and the through hole is formed. A bolt similar to that of the bolt 57 may be inserted into the screw hole, and a male screw of the bolt may be screwed into the screw hole.

Further, instead of the

bolts

57 and 58, the pin 59 shown in FIG. 8D may be used for fixing the support unit 100 to the plurality of magnetic pole units 70. Alternatively, the support unit 100 may be fixed to the plurality of magnetic pole units 70 by welding or adhesion.

The inner support member 110 and the outer support member 120 may be separable in the rotation axis direction in addition to the rotation direction or in addition to the rotation direction. For example, at least one of the inner support member 110 and the outer support member 120 may be composed of two cylindrical members that can be separated in the rotation axis direction.

FIG. 19 shows a modified example of the outer support member 120. The outer support member 120 is composed of a first division member 241 arranged on the first axial direction side and a second division member 242 arranged on the second axial direction side, and the first and second division members 120. The members 241,242 can be separated from each other in the direction of the rotation axis.

The first dividing member 241 has a cylindrical first main body portion 241c, a plurality of first inner fitting portions 241a, and a plurality of first outer fitting portions 241b. Each of the plurality of first inner fitting portions 241a and the plurality of first outer fitting portions 241b is the second from the end surface (lower surface in FIG. 19) on the second axial direction side of the first main body portion 241c. The plurality of first inner fitting portions 241a and the plurality of first outer fitting portions 241b are arranged alternately in the rotational direction so as to project toward the axial direction (lower side in FIG. 19). Each of the plurality of first inner fitting portions 241a protrudes from the inner annular region of the outer annular region and the inner annular region divided in the radial direction on the end surface of the first main body portion 241c, and the plurality. Each of the first outer fitting portions 241b of the above projects from the outer annular region. That is, the plurality of first inner fitting portions 241a and the plurality of first outer fitting portions 241b are alternately arranged in a staggered manner along the rotation direction.

The second split member 242 has a cylindrical second main body portion 242c, a plurality of second inner fitting portions 242a, and a plurality of second outer fitting portions 242b. Each of the plurality of second inner fitting portions 242a and the plurality of second outer fitting portions 242b is the second from the end surface (lower surface in FIG. 19) on the second axial direction side of the second main body portion 242c. The plurality of second inner fitting portions 242a and the plurality of second outer fitting portions 242b are alternately arranged in the rotational direction so as to project toward the axial direction (lower side in FIG. 19). Each of the plurality of second inner fitting portions 242a protrudes from the inner annular region of the outer annular region and the inner annular region divided in the radial direction on the end surface of the second main body portion 242c, and the plurality. Each of the second outer fitting portions 242b of the above projects from the outer annular region. That is, the plurality of second inner fitting portions 242a and the plurality of second outer fitting portions 242b are alternately arranged in a staggered manner along the rotation direction.

Each of the plurality of first inner fitting portions 241a is located inside each of the plurality of second outer fitting portions 242b in the radial direction of rotation, and is said to each other among the plurality of second inner fitting portions 242a. It is possible to be fitted from the first axial direction side to the second axial direction side between the second inner fitting portions 242a adjacent to each other in the rotation direction, and at the same time, the plurality of first ones. Each of the outer fitting portions 241b is adjacent to each other in the rotation direction among the plurality of second outer fitting portions 242b at the positions outside the radius of rotation of each of the plurality of second inner fitting portions 242a. It is possible to be fitted between the second outer fitting portions 242b from the first axial direction side to the second axial direction side. In other words, each of the plurality of second inner fitting portions 242a is located inside the plurality of first outer fitting portions 241b in the radial direction of rotation, respectively, and the plurality of first inner fitting portions 241a. Of these, it is possible to be fitted from the second axial direction side to the first axial direction side between the first inner fitting portions 241a adjacent to each other in the rotational direction, and at the same time, the said Each of the plurality of second outer fitting portions 242b rotates with each other among the plurality of first outer fitting portions 241b at the positions outside the plurality of first inner fitting portions 241a in the radial direction of rotation. It is possible to be fitted from the second axial direction side to the first axial direction side between the first outer fitting portions 241b adjacent to each other in the direction. These fittings suppress the deviation between the first dividing member 241 and the second dividing member 242 in the rotation direction and the radius of gyration. Further, when the inner support member 110 and the outer support member 120 are composed of the first and second split members that can be separated in the rotation axis direction, the plurality of iron cores and the plurality of permanent magnets support the inner side. It can be inserted into the member 110 or the outer support member 120 in the direction of the rotation axis and easily assembled.

The number of divided members in the direction of the rotation axis for forming the inner support member 110 or the outer support member 120 is not limited to two. The number of the dividing members may be the same as the number of the parts arranged in the rotation axis direction in the magnetic pole, that is, the iron core and the permanent magnet. In the electric motor 2 according to the second embodiment, the number of parts arranged in the rotation axis direction in each of the plurality of magnetic pole units 70 is 3 (for example, in the magnetic pole unit 70 outside in the radial direction of rotation, the first pole unit 70 is used. Since the outer core 73, the outer Z magnet 82, and the second outer core 74), the inner support member 110 or the outer support member 120 is a portion where the first outer core 73 is arranged, the first. It can be exemplified that the outer Z magnet 82 is divided into three parts, a portion where the outer Z magnet 82 is arranged and a portion where the second outer iron core 74 is arranged. When the plurality of iron cores and the plurality of permanent magnets are alternately laminated, the inner support member 110 or the outer support member 120 may be divided for each of the iron cores and the permanent magnets. For example, when the first iron core, the first permanent magnet, the second iron core, the second permanent magnet, the third iron core, the third permanent magnet, and the fourth iron core are laminated in this order in the direction of the rotation axis, the inner support The member 110 or the outer support member 120 may be divided into seven divided members. That is, when the number of pairs of the iron core and the permanent magnet is n, the inner support member 110 or the outer support member 120 may be divided into 2n + 1 numbers.

FIG. 20 shows a monopole 60 according to a third embodiment of the present invention. The magnetic monopole 60 includes a plurality of magnetic pole units 70, an inner support member 110 and an outer support member 120 arranged on the inner and outer sides in the radial direction thereof, respectively, and the inner support member 110 and the outer support member 120. Is fixed to the plurality of magnetic pole units 70 by shrink fitting. Specifically, the magnetic pole element 60 is smaller than the diameter of the outer peripheral surface of the outer support member 120 by assembling the plurality of magnetic pole units 70, the inner support member 110, and the outer support member 120. A cylindrical ring 170 having an inner peripheral surface having a diameter is heated so that the diameter of the inner peripheral surface is larger than the diameter of the outer peripheral surface of the outer support member 120, and the ring is formed on the outer side of the outer support member 120. It can be manufactured by arranging the 170 and cooling the ring 170 to room temperature. Such shrink fitting of the ring 170 makes it possible to firmly fix the plurality of magnetic pole units 70 and the inner and

outer support members

110 and 120. Examples of the material of the ring 170 include metals such as aluminum, iron, and stainless steel, and thermosetting resins. From the viewpoint of weight reduction, aluminum is most preferable.

The shrink fitting using the ring 170 eliminates the need for direct fixing between the plurality of inner support member elements 110E and direct fixing between the plurality of outer support member elements 120E. That is, even if the plurality of inner support member elements 110E and the plurality of outer support member elements 120E are arranged in the rotational direction, the heated ring 170 is arranged on the outer side thereof and shrink fitting is performed. It is possible to firmly connect the support member elements 110E and the plurality of outer support member elements 120E to each other, and the torque applied to the inner support member 110 is sufficiently transmitted to the outer support member 120. It is possible to firmly integrate the entire magnetic pole 60 to a certain extent. This eliminates the need for a fitting structure as shown in FIGS. 17 and 18.

FIG. 21 shows a first modification of the plurality of protrusions 130 shown in FIG. 11 and a second outer core 74 to be fitted therein. The shape of the protrusions included in each of the plurality of protrusion groups 130 is not limited to the rectangular parallelepiped shape. In the first modification, the protrusions included in one of the left side protrusion row 131 and the right side protrusion row 132 (for example, the left side protrusion row 131) constituting the plurality of protrusion groups 130 are formed in the direction of the radius of gyration. It includes an extending main body portion and a sub-protruding portion protruding in the rotational direction toward the second outer core 74, which is an example of one of the iron cores adjacent to each other from the tip of the main body portion. Specifically, in the first modification shown in FIG. 21, each of the second left side protrusion 131b and the third left side protrusion 131c included in the left side protrusion row 131 has a main body portion extending in the radial direction of rotation and the main body portion. It has a sub-projection portion 131f that projects in the rotational direction from the tip of the main body portion toward the right-side projection row 132, that is, toward the iron core to be held (the second outer core 74 in FIG. 21). Similarly, each of the second right projection 132b and the third right projection 132c included in the right projection row 132 has a main body extending in the radial direction of rotation and the tip of the main body toward the left projection row 131. That is, it has a sub-projection portion 132f that projects in the rotational direction toward the second outer core 74.

On the other hand, the second outer core 74, which is an example of the iron core to be held, is formed with a recess for accommodating the sub-projection portion. Specifically, in the first modification shown in FIG. 21, the third left side is located at the end of the second outer core 74 on the first axial direction and on the inner end in the radius of gyration. A recess 76 is formed to accommodate the sub-projections 131f and 132f of the protrusion 131c and the third right-side projection 132c, respectively. Similarly, the iron core to be held by the second left side protrusion 131b and the second right side protrusion 132b, that is, the first outer core 73 not shown in FIG. 21, has the second left side protrusion 131b and the second left side protrusion 131b. 2. A recess for accommodating the sub-projections 131f and 132f of the right-side projection 132b is formed at the end of the first outer core 73 on the second axial direction side. The sub-projections 131f and 132f are housed in the recesses so that the first and second

outer cores

73 and 74, which are the iron cores in which the recesses are formed, are oriented in the radial direction and the axis of rotation. It is possible to suppress the movement.

22A to 22C show a second modification of the plurality of protrusions 130 and an iron core and a permanent magnet to be held by the protrusions 130. The number of protrusions included in each of the left side protrusion row 131 and the right side protrusion row 132 of the plurality of protrusion groups 130 is not limited to four. As shown in FIG. 22A, the left side protrusion row 131 according to the second modification has two protrusions, that is, the first left side protrusion 131g provided at the end portion of the outer support member 120 on the first axial direction side. And the second left side projection 131h provided at the end on the second axial direction side. Similarly, the right side protrusion row 132 according to the second modification has the first right side protrusion 132g provided at the end of the outer support member 120 on the first axial direction side and the end on the second axial direction side. Includes a second right side projection 132h provided on the portion. The first left side protrusion 131g and the second left side protrusion 131h have a main body portion extending in the radius of gyration and a sub-projection portion 131j, and the sub-protrusion portion 131j is located on the right side from the tip of the main body portion. It projects in the rotational direction toward the projection row 132, that is, toward the iron core to be held, that is, the first outer core 273 and the second outer core 274 in the second modification. Similarly, the first right-side protrusion 132g and the second right-side protrusion 132h have a main body portion extending in the radius of gyration and a sub-projection portion 132j, and the sub-protrusion portion 131j is the tip of the main body portion. Projects from the left side projection row 131 toward the left side projection row 131, that is, toward the first outer core 73 and the second outer core 74, which are the cores to be held, in the rotational direction.

On the other hand, as shown in FIG. 22B, the outer Z magnet 282 interposed between the first outer core 273, the second outer core 274, and the first and second

outer cores

273 and 274 has the rotation axis. They have the same shape as each other when viewed in the direction. The first outer core 273, the outer Z magnet 282, and the second outer core 274 have a main body and

convex portions

273a, 282a, 274a, respectively, and the

convex portions

273a, 282a, 274a. Is in the radial direction at the center position in the radial direction from the inner end face of the main body of the first outer core 273, the outer Z magnet 282, and the second outer core 274 in the radial direction. Protruding inward. The main body of each of the first outer core 273, the first outer Z magnet 282, and the second outer core 274 has the

convex portions

273a, 282a, 274a in the rotation direction of the

sub-projected portions

131j, 132j. It has a shape that can be fitted between the first left side protrusion 131 g and the first right side protrusion 132 g while being accommodated in the gap, and has an arc strip shape in the example shown in FIG. 22B.

In the second modification, the first outer core 273, the outer Z magnet 282, and the second outer core 274 are inserted between the first left protrusion 131 g and the first right protrusion 132 g in the rotation axis direction. It is possible. Further, the left side and right

side projection rows

131 and 132 are prevented from moving in the rotation direction and the rotation radius direction of the first and second

outer cores

273 and 274 inserted as described above between them. Can be done. Further, the first outer core holding member 156 and the second outer core holding member 157 move in the rotation axis direction of the first outer core 273, the first outer Z magnet 282, and the second outer core 274. It is possible to suppress this.

The deformation according to the second modification is the plurality of protrusions 180 in the inner support member 110 shown in FIG. 11, that is, the first inner core 71, the inner Z magnet 81, and the second inner core 72. It can also be applied to the structure for holding. Further, the first inner core holding member 154 and the second inner core holding member 155 move the first inner core 71, the inner Z magnet 81, and the second inner core 72 in the direction of the rotation axis. It can be suppressed.

23A and 23B are iron cores and permanent magnets that can be held by the left side projection row 131 and the right side protrusion row 132 according to the second modification, and the iron core and permanent magnet according to the third modification. That is, the first outer core 373, the outer Z magnet 382 and the second outer core 374 are shown. The recess 373a into which the first left projection 131g can be fitted and the first right projection 132g are fitted into the surface of the first outer core 373 on the first axial direction side, that is, the upper surface in FIG. 23A. A recess 373b, which is capable of forming, is formed. Similarly, a recess 374a into which the second left side protrusion 131h is fitted and a recess 374b into which the second right side protrusion 132h is fitted are formed on the surface of the second outer core 374 on the second axial direction side, that is, the lower surface in FIG. 23A. It is formed.

The first outer core 373, the outer Z magnet 382, and the second outer core 374 are overlapped with each other in the direction of the rotation axis, and the first left projection 131 g, the first right projection 132 g, and the first right projection 132 g. 2 It is sandwiched between the left side protrusion 131h and the second right side protrusion 132h in the direction of the rotation axis. This means that even without the first outer core holding member 156 and the second outer core holding member 157, the first outer core 373, the first outer Z magnet 382 and the second outer core 374 are the rotating shafts. It makes it possible to suppress the movement in the direction.

The deformation according to the third modification includes the plurality of protrusions 180 of the inner support member 110 shown in FIG. 11, that is, the first inner core 71, the inner Z magnet 81, and the second inner core 72. It can be similarly applied to a group of protrusions for holding. In this application, the first inner core 71, the inner Z magnet 81, and the second inner core 72 are axially oriented even without the first inner core holding member 154 and the second inner core holding member 155 described above. It makes it possible to suppress the movement.

FIGS. 24A and 24B show deformation examples of the intermediate support member and the permanent magnet whose movement is suppressed by the intermediate support member. The intermediate support member according to the modification is the intermediate support member 251 shown in FIGS. 24A and 24B, the intermediate support member 251 has a pair of protrusions 251a, and the pair of protrusions 251a is the above-mentioned. The intermediate support member 151 projects from both end faces in the rotation direction in the rotation direction. The permanent magnet according to the modification is a second R magnet 284 adjacent to each other in the rotation direction, each of the second R magnets 284 has a pair of recesses 284a, and the pair of recesses 284a is the first. The 2R magnet 284 is formed at both ends in the rotation direction and is recessed from the surface (upper surface in FIG. 24A) of the second R magnet 284 on the first axial direction to the second axial direction.

The intermediate support member 251 is inserted between the adjacent second R magnets 284 until the pair of protrusions 251a of the intermediate support member 251 are fitted into the recesses 284a of the adjacent second R magnets 284. It is possible. This makes it possible for the intermediate support member 251 to suppress the axial movement of the second R magnet 284.

The first magnet holding member 152 shown in FIGS. 13C and 13D forms an annular shape covering the surface of all the first R magnets 83 on the first axial direction, but the present invention is not limited thereto. Further, the first magnet holding member 152 forms an annular shape covering the surfaces of the first inner θ magnet 85 and the first outer θ magnet 87 on the first axial direction side, but the present invention is not limited thereto. .. The first magnet holding member 152 is, for example, a part of the end faces of the first R magnets 83 on both sides of the intermediate support member 151 and the end faces of the outer portions of the first inner θ magnet 85 in the radial direction of rotation. And may be cross-shaped so as to cover the end surface of the inner portion of the first outer θ magnet 87 in the radial direction of rotation. This means that the first R magnet 83 in the region between the cross-shaped pressing members and the first inner θ magnet 85 in the region between the cross-shaped pressing member and the first inner core holding member 154. , And the end faces of the first outer θ magnet 87 in the region between the cross-shaped pressing member and the first outer core holding member 156 on the first axial direction side of the first inner core holding member. It is possible to expand to the position of 154 in the direction of the first axis. Similarly, forming the second magnet holding member 153 into a cross shape means that the second R magnet 84, the second inner θ magnet 86, and the second outer θ magnet 88 are on the second axial direction side of each. It is possible to expand the end face to the position of the second inner core holding member 155 in the second axial direction.

In the electric motor according to the first embodiment and the electric motor according to the second embodiment, the

support units

50 and 100 formed of a non-magnetic material are applied to the axial gap type electric motor. The

support units

50 and 100 are radial gap type and other motors, and may be applied to motors that convert electric energy into rotary motion.

As described above, the magnetic monopole and the armature that is arranged so as to face the magnetic pole element in the rotation axis direction and forms a magnetic field that rotates the magnetic pole element around the rotation axis parallel to the rotation axis direction. The magnetic monopole of the equipped motor is provided. The magnetic monopole includes a plurality of iron cores, a plurality of permanent magnets, and a support unit. The plurality of iron cores are arranged in the rotation direction of the magnetic monopole, and each has a plurality of outer surfaces. The plurality of permanent magnets are arranged so as to face a plurality of outer surfaces selected from the outer surfaces of the plurality of iron cores, and include permanent magnets interposed between the iron cores adjacent to each other in the rotational direction. .. Each of the plurality of permanent magnets has a main surface facing the outer surface of the iron core corresponding to the permanent magnet and an opposite side surface opposite to the outer surface of the plurality of iron cores, and the main surface and the opposite side surface face each other. Consists of opposite magnetic poles. The support unit is formed of a non-magnetic material and supports the plurality of iron cores and the plurality of permanent magnets. The support unit is arranged inside the plurality of iron cores in the radial direction of rotation of the magnetic pole element, and outside the plurality of iron cores and the plurality of permanent magnets in the radial direction of rotation. The plurality of iron cores and the plurality of permanent magnets are supported together with the inner support member while sandwiching the plurality of iron cores and the plurality of permanent magnets in the direction of the radius of gyration. The outer surface of the plurality of iron cores includes a plurality of open surfaces that are opened without facing the permanent magnet, and the plurality of open surfaces are a plurality of armatures that face the armature in the direction of the rotation axis. It includes an facing surface, an inner support member facing surface facing the inner support member in the turning radius direction, and an outer supporting member facing surface facing the inner support member in the turning radius direction. A part of the plurality of open surfaces is coupled to the support unit.

According to this magnetic pole element, the armature facing surface of the plurality of outer surfaces of the plurality of iron cores is opened to face the armature in the direction of the rotation axis, and a plurality of armature facing surfaces including the armature facing surface. The arrangement of the plurality of permanent magnets so as to face each of the outer surfaces selected from the plurality of outer surfaces of the plurality of iron cores except for the open surface makes it possible to maintain the high performance of the electric machine. A part of the plurality of open surfaces is coupled to the inner support member and the outer support member of the support unit formed of a non-magnetic material, whereby the armature is supported by the inner support member and the outer support member. Allows the member to be rotatably supported.

The inner support member includes a plurality of inner magnet restraint protrusions arranged at positions closer to the armature than the plurality of iron cores at intervals in the rotation direction, and the plurality of inner magnet restraint protrusions are the same. The direction in which the permanent magnets interposed between the iron cores adjacent to each other in the rotation direction of the plurality of permanent magnets approach the armature by projecting outward from the facing surface of the inner support member in the direction of the radius of gyration. The iron core of the magnetic pole unit is opened to the armature between the inner magnet restraint protrusions adjacent to each other in the rotation direction among the plurality of inner magnet restraint protrusions. It is preferable that they are arranged in. The plurality of inner magnet restraint protrusions allow the armature facing surface to face the armature between the plurality of inner magnet restraint protrusions, while the plurality of permanent magnets are attached to the armature. It is possible to suppress the movement in the approaching direction.

Similarly, it is preferable that the outer support member includes a plurality of outer magnet restraint protrusions arranged at positions closer to the armature than the plurality of iron cores at intervals in the rotational direction. The plurality of outer magnet restraint protrusions project inward in the direction of the radius of gyration from the surface facing the outer support member, so that the plurality of permanent magnets are between the iron cores adjacent to each other in the direction of rotation. The magnetic pole unit suppresses the intervening permanent magnets from moving in a direction approaching the armature, and is between the outer magnet restraint protrusions adjacent to each other in the rotation direction among the plurality of outer magnet restraint protrusions. The iron core is arranged so as to open to the armature.

The outer support member includes a plurality of outer core restraint protrusions arranged at intervals in the rotation direction, and the plurality of outer core restraint protrusions are inside the rotation radius direction with respect to the outer support member facing surface. It is preferable to prevent the iron cores from moving in the rotation direction by interposing between the iron cores adjacent to each other in the rotation direction among the plurality of iron cores by projecting in the direction. The outer support member including the plurality of outer core restraining protrusions can effectively restrain the plurality of iron cores with a simple structure.

The plurality of outer core restraint protrusions include a main body extending in the radius of gyration and a sub-projection protruding in the rotation direction from the tip of the main body toward one of the adjacent iron cores. , And a recess for accommodating the sub-projection portion is formed in the one iron core, and the sub-projection portion is accommodated in the recess so that the core in which the recess is formed is formed in the radial direction and in the radial direction. It is preferable to suppress the movement in the rotation axis direction. The outer core restraining protrusion may further include the sub-protrusion that can be accommodated in the recess, thereby restraining the core in the radial direction and the axis of rotation with a simple structure. can.

The plurality of cores include a plurality of inner cores arranged in the rotational direction around the inner support member, and a plurality of outer cores arranged in the rotational direction between the plurality of inner cores and the outer support member. The plurality of permanent magnets including the iron core are the plurality of inner permanent magnets interposed between the inner cores adjacent to each other in the rotation direction among the plurality of inner cores, and the plurality of outer cores. It is preferable to include a plurality of outer permanent magnets interposed between the outer cores adjacent to each other in the rotation direction. This makes it possible to arrange the plurality of iron cores in both the rotation direction and the radius of gyration direction to improve the performance of the motor.

In this embodiment, it is preferable that the plurality of inner cores have the same outer shape as seen in the direction of the rotation axis, and the plurality of outer cores have the same outer shape as seen in the direction of the rotation axis. This makes it possible to increase the mass productivity of the plurality of inner cores and the plurality of outer cores.

In the above embodiment, the support unit further includes a plurality of intermediate support members, and the plurality of intermediate support members are interposed between the plurality of outer cores and the plurality of inner cores of the plurality of permanent magnets. It is a permanent magnet selected from the permanent magnets to be used, and the movement of the adjacent permanent magnets is suppressed by interposing between the permanent magnets adjacent to each other in the rotation direction.

The plurality of intermediate support members are located on the outer sides in the radial direction of the plurality of inner permanent magnets selected from the plurality of inner permanent magnets and the plurality of selected inner permanent magnets among the plurality of outer permanent magnets. The movement of the selected plurality of inner permanent magnets and the plurality of outer permanent magnets corresponding to the selected plurality of inner permanent magnets in the radial direction, respectively, intervening between the plurality of outer permanent magnets. It is more preferable to include a suppressor.

The plurality of iron cores are a plurality of first cores arranged so as to be aligned with each other in the rotation direction, and a plurality of first cores arranged so as to be arranged with each other in the rotation direction and adjacent to each other in the rotation axis direction. The plurality of permanent magnets include the second permanent magnet of the above, and the plurality of permanent magnets include a first permanent magnet interposed between the first cores adjacent to each other in the rotation direction among the plurality of first cores, and the plurality of second cores. A second permanent magnet interposed between the second permanent magnets adjacent to each other in the rotation direction of the iron core, and a plurality of intermediate permanent magnets intervening between the plurality of first permanent magnets and the plurality of second permanent magnets, respectively. It is preferable to include a magnet. By arranging the plurality of iron cores in both the rotation direction and the rotation axis direction in this way, the plurality of iron cores can be rotated by the inner support member and the outer support member while improving the performance of the electric motor. Can be supported by.

Further provided is an axial gap type motor, which is arranged so as to face the monopole and the monopole in the direction of the rotation axis, and rotates the monopole in parallel with the direction of the rotation axis. It is equipped with an armature that forms a magnetic field that rotates around an axis.

Also provided is a method for manufacturing the magnetic monopole including the plurality of inner cores and the plurality of outer cores. This method can be combined with a plurality of inner support member elements capable of forming the inner support member by being arranged in the rotational direction and coupled to each other, and the plurality of outer support member elements, respectively. The plurality of outer support member elements capable of forming the outer support member by being arranged in the rotation direction and coupled to each other, the plurality of inner cores, the plurality of outer cores, and the said. The step of preparing the plurality of inner permanent magnets and the plurality of outer permanent magnets, and the inner support member of the plurality of inner cores and the plurality of inner permanent magnets in each of the plurality of inner support member elements. The inner mounting step of mounting the inner core and the inner permanent magnet corresponding to the element, and the outer support member element of the plurality of outer cores and the plurality of outer permanent magnets correspond to each of the plurality of outer support member elements. A plurality of subsystems by combining the outer mounting step of mounting the outer core and the outer permanent magnet, and the inner support member elements and the outer support member elements corresponding to each other in the plurality of inner support member elements and the plurality of outer support member elements. A support member joining step of joining the inner support members of the plurality of subunits adjacent to each other in the rotation direction and joining the outer support members of the plurality of subunits is included. In this method, the inner support member is divided into the plurality of inner support member elements, and the outer support member is divided into the plurality of support member elements. The iron core and the plurality of permanent magnets are easily attached.

Claims

The electric motor comprising a magnetic pole and an armature arranged so as to face the magnetic pole in the direction of the rotation axis and forming a magnetic field for rotating the magnetic pole around a rotation axis parallel to the direction of the rotation axis. It ’s a magnetic monopole.
A plurality of iron cores arranged in the rotation direction of the magnetic poles, each having a plurality of outer surfaces, and an iron core.
A plurality of permanent magnets arranged so as to face a plurality of outer surfaces selected from the outer surfaces of the plurality of iron cores, and the plurality of permanent magnets are between the iron cores adjacent to each other in the rotation direction. Each of the plurality of permanent magnets has, among the plurality of iron cores, a main surface facing the outer surface of the iron core corresponding to the permanent magnet and an opposite side surface opposite to the outer surface of the permanent magnets. , A plurality of permanent magnets whose main surface and the opposite side surface form magnetic poles opposite to each other,
It comprises a support unit formed of a non-magnetic material and supporting the plurality of iron cores and the plurality of permanent magnets.
The support unit is arranged inside the plurality of iron cores in the radial direction of rotation of the magnetic pole element, and outside the plurality of iron cores and the plurality of permanent magnets in the radial direction of rotation. Along with the inner support member, the plurality of iron cores and the outer support member that supports the plurality of iron cores and the plurality of permanent magnets while sandwiching the plurality of iron cores and the plurality of permanent magnets in the radius of gyration direction are included.
The outer surface of the plurality of iron cores includes a plurality of open surfaces that are opened without facing the permanent magnet, and the plurality of open surfaces are a plurality of armatures that face the armature in the direction of the rotation axis. The facing surface includes an inner support member facing surface facing the inner support member in the turning radius direction, and an outer supporting member facing surface facing the inner support member in the turning radius direction. A magnetic pole element in which a part of a plurality of open surfaces is coupled to the support unit.
The magnetic pole according to claim 1, wherein the inner support member includes a plurality of inner magnet restraint protrusions arranged at positions closer to the armature than the plurality of iron cores and spaced apart from each other in the rotation direction. The plurality of inner magnet restraint protrusions project outward from the inner support member facing surface in the direction of the radius of gyration, so that the plurality of permanent magnets are between the iron cores adjacent to each other in the direction of rotation. It suppresses the movement of the permanent magnets interposed in the armature in the direction approaching the armature, and among the plurality of inner magnet restraint protrusions, the magnetic poles between the inner magnet restraint protrusions adjacent to each other in the rotation direction. Magnetic poles arranged to open the iron core of the unit to the armature.
The magnetic pole according to claim 1, wherein the outer support member includes a plurality of outer magnet restraint protrusions arranged at positions closer to the armature than the plurality of iron cores and spaced apart from each other in the rotation direction. The plurality of outer magnet restraint protrusions project inward in the direction of the radius of gyration from the surface facing the outer support member, so that the plurality of permanent magnets are between the iron cores adjacent to each other in the direction of rotation. It suppresses the movement of the permanent magnets interposed in the armature in the direction approaching the armature, and among the plurality of outer magnet restraint protrusions, the magnetic poles between the outer magnet restraint protrusions adjacent to each other in the rotation direction. Magnetic poles arranged to open the iron core of the unit to the armature.
The magnetic pole according to claim 1, wherein the outer support member includes a plurality of outer core restraint protrusions arranged at intervals in the rotation direction, and the plurality of outer core restraint protrusions are the outer side. By projecting inward from the surface facing the support member in the radial direction of rotation, the core of the plurality of iron cores is interposed between the cores adjacent to each other in the direction of rotation to move in the direction of rotation. Suppress, magnetic monopole.
The magnetic pole element according to claim 4, wherein the plurality of outer core restraining protrusions are formed on one of the main body portion extending in the radial direction of rotation and one of the iron cores adjacent to each other from the tip of the main body portion. A recess is formed in one of the iron cores, including a sub-projection that projects toward the rotation direction, and the sub-projection is accommodated in the recess to accommodate the sub-projection. A magnetic pole element that prevents the iron core on which the core is formed from moving in the radial direction and the axial direction of rotation.
The magnetic pole according to claim 1, wherein the plurality of cores are a plurality of inner cores arranged in the rotational direction around the inner support member, and the plurality of inner cores and the outer support member. The plurality of permanent magnets include, among the plurality of outer cores arranged in the rotation direction, and the plurality of inner magnets intervening between the inner cores adjacent to each other in the rotation direction among the plurality of inner cores. A magnetic pole element including a permanent magnet and a plurality of outer permanent magnets interposed between the outer cores adjacent to each other in the rotation direction among the plurality of outer cores.
The magnetic pole according to claim 6, wherein the plurality of inner cores have the same outer shape as seen in the direction of the rotation axis, and the plurality of outer cores have the same outer shape as seen in the direction of the rotation axis. Has a magnetic pole.
The magnetic pole element according to claim 6, wherein the support unit further includes a plurality of intermediate support members, and the plurality of intermediate support members include the plurality of inner cores of the plurality of permanent magnets and the plurality of intermediate support members. A magnetic pole element that is a permanent magnet selected from the permanent magnets interposed between the outer core and the permanent magnets, and suppresses the movement of the adjacent permanent magnets by interposing between the permanent magnets adjacent to each other in the rotation direction.
The magnetic pole element according to claim 8, wherein the plurality of intermediate support members are the plurality of inner permanent magnets selected from the plurality of inner permanent magnets and the plurality of selected inner sides of the plurality of outer permanent magnets. The above-mentioned corresponding to the selected plurality of inner permanent magnets and the selected plurality of inner permanent magnets, respectively, interposed between the plurality of outer permanent magnets located on the outer sides of the permanent magnet in the radial direction of rotation. A magnetic pole element including one that suppresses the movement of a plurality of outer permanent magnets in the radius of gyration.
The magnetic pole element according to claim 1, wherein the plurality of iron cores are arranged so as to be aligned with each other in the rotation direction, and the plurality of first cores arranged so as to be arranged with each other in the rotation direction. The plurality of permanent magnets include one core and a plurality of second cores adjacent to each other in the rotation axis direction, and the plurality of permanent magnets are interposed between the first cores adjacent to each other in the rotation direction among the plurality of first cores. The first permanent magnet, the second permanent magnet interposed between the second permanent magnets adjacent to each other in the rotation direction among the plurality of second cores, the plurality of first permanent magnets, and the plurality of second permanent magnets. A magnetic pole, including multiple intermediate permanent magnets, each intervening between and.
It is an axial gap type motor,
The magnetic monopole according to any one of claims 1 to 10 and
An electric motor including an armature arranged so as to face the magnetic pole element in the direction of the rotation axis and forming a magnetic field for rotating the magnetic pole element around a rotation axis parallel to the rotation axis direction.
The method for manufacturing the magnetic monopole according to any one of claims 6 to 9.
It is possible to combine a plurality of inner support member elements capable of forming the inner support member by being arranged in the rotational direction and being coupled to each other, and the plurality of outer support member elements, respectively. A plurality of outer support member elements capable of forming the outer support member by being arranged in a rotational direction and coupled to each other, the plurality of inner cores, the plurality of outer cores, and the plurality of inner permanents. A process of preparing a magnet and the plurality of outer permanent magnets, and
An inner mounting step of attaching the inner core and the inner permanent magnet corresponding to the inner support member element among the plurality of inner cores and the plurality of inner permanent magnets to each of the plurality of inner support member elements.
An outer mounting step of attaching the outer core and the outer permanent magnet corresponding to the outer support member element among the plurality of outer cores and the plurality of outer permanent magnets to each of the plurality of outer support member elements.
A subunit forming step of forming a plurality of subunits by combining the inner support member elements and the outer support member elements corresponding to each other in the plurality of inner support member elements and the plurality of outer support member elements.
A support member joining step of joining the inner support members of the subunits adjacent to each other in the rotational direction among the plurality of subunits and joining the outer support members to each other is included.
Manufacturing method of magnetic monopole.