JP2019129639A - Rotary electric machine and vehicle - Google Patents

Abstract

To provide a rotary electric machine and vehicle capable of reducing a manufacturing cost or to provide a rotary electric machine and vehicle capable of shortening a manufacturing time.SOLUTION: A rotary electric machine includes a rotator RA. The rotator RA includes: a support plate P to be rotated with a rotation axis AX1 as a center; multiple permanent magnets M arranged on the support plate; and multiple iron cores C that are fixed to the support plate, are alternately arranged together with the multiple permanent magnets in a circumferential direction d1 with the rotation axis as a center, press one-side magnetic poles of the respectively adjacent permanent magnets against the support plate, and fix the multiple permanent magnets together with the support plate. Magnetism of one-side magnetic poles of the permanent magnets M to be pressed by the respective iron cores C is the same as magnetism of the other-side magnetic poles of the permanent magnets M to be pressed by the iron cores.SELECTED DRAWING: Figure 6

Description

  Embodiments described herein relate generally to a rotating electrical machine and a vehicle.

  Although an induction motor has been used as a rotating electric machine for use in railway vehicles, in recent years, the reduction in price of permanent magnets and the spread of high-performance inverters enable size and weight reduction and high efficiency. The momentum for adopting permanent magnet type rotating electrical machines is increasing.

  Under such circumstances, in order to reduce the manufacturing cost of the rotating electrical machine, various types of permanent magnet type rotor structures are being studied.

JP-A-4-312334 JP 2004-72978 A JP, 2010-11640, A

  The present embodiment provides a rotating electrical machine and a vehicle that can reduce manufacturing costs. Alternatively, a rotating electrical machine and a vehicle that can reduce manufacturing time are provided.

The rotating electrical machine according to an embodiment is
A support plate that rotates about a rotation axis, a plurality of permanent magnets arranged on the support plate, and fixed to the support plate, and alternately arranged with the plurality of permanent magnets in a circumferential direction around the rotation axis A rotor having a plurality of iron cores for pressing one magnetic pole of the permanent magnets adjacent to each other to the support plate side and fixing the plurality of permanent magnets together with the support plate, each iron core pressing The magnetism of the magnetic pole of one of the permanent magnets is the same as the magnetism of the magnetic pole of the other permanent magnet pressed by the iron core.

In addition, a vehicle according to an embodiment is
The rotary electric machine and wheels provided on both sides of a shaft of the rotary electric machine are provided.

FIG. 1 is a perspective view showing a motor according to an embodiment, showing an appearance of the motor. FIG. 2 is an exploded perspective view showing the motor. FIG. 3 is a sectional view showing a part of the motor. FIG. 4 is an exploded perspective view showing the stator shown in FIG. FIG. 5 is a plan view showing the stator shown in FIGS. 3 and 4. 6 is a perspective view showing the rotor shown in FIG. FIG. 7 is an exploded perspective view showing the rotor shown in FIG. FIG. 8 is a configuration diagram illustrating the permanent magnet illustrated in FIG. 6. FIG. 9 is a block diagram showing the iron core shown in FIG. FIG. 10 is a block diagram showing the permanent magnet shown in FIG. 6 and a pair of iron cores including the iron core shown in FIG. 11 is a cross-sectional view of the rotor taken along line XI-XI of FIG. FIG. 12 is a configuration diagram illustrating a permanent magnet and a pair of iron cores of a motor according to the first modification. FIG. 13 is a configuration diagram showing a permanent magnet of a motor according to Modification 2 and a pair of iron cores. FIG. 14 is a configuration diagram showing a permanent magnet of a motor according to Modification 3 and a pair of iron cores. FIG. 15 is a configuration diagram showing a permanent magnet of a motor according to Modification 4 and a pair of iron cores. FIG. 16 is a configuration diagram showing a permanent magnet of a motor according to Modification 5 and a pair of iron cores. FIG. 17 is a plan view showing a rotor of a motor according to Modification 6 and showing a support plate and a plurality of permanent magnets. FIG. 18 is a plan view showing a rotor of a motor according to Modification 7 and is a view showing a support plate and a plurality of permanent magnets. FIG. 19 is a side view showing a railway vehicle, for explaining an example in which a motor is applied to the railway vehicle.

(One embodiment)
Hereinafter, an embodiment will be described with reference to the drawings. It should be noted that the disclosure is merely an example, and those skilled in the art can easily conceive of appropriate modifications while maintaining the gist of the invention are naturally included in the scope of the present invention. In addition, the drawings may be schematically represented as to the width, thickness, shape, etc. of each portion in comparison with the actual embodiment in order to clarify the description, but this is merely an example, and the interpretation of the present invention is not limited. It is not limited. In the specification and the drawings, the same elements as those described above with reference to the drawings already described may be denoted by the same reference numerals, and the detailed description may be appropriately omitted.

  In the present embodiment, an axial gap motor is disclosed as an example of a rotating electrical machine. However, part of the structure shown in the present embodiment can also be applied to other types of rotating electrical machines.

  FIG. 1 is a perspective view showing a transverse flux motor A (hereinafter referred to as motor A) according to the present embodiment.

  As shown in FIG. 1, the motor A includes four housings 10A, 10B, 10C, and 10D, three rectangular frames 20A, 20B, and 20C, and a shaft S.

  The frame 20A is disposed between the housings 10A and 10B. The frame 20B is disposed between the housings 10B and 10C. The frame 20C is disposed between the housings 10C and 10D. The housing 10A has a cylindrical shape with a bottom, and one open end is connected to the frame 20A. The housing 10B is cylindrical, and one end is connected to the frame 20A and the other end is connected to the frame 20B. The housing 10C is cylindrical, and one end is connected to the frame 20B and the other end is connected to the frame 20C. The housing 10C is cylindrical with a bottom, and one open end thereof is connected to the frame 20C.

  The shaft S is passed through the housings 10A to 10D and the frames 20A to 20C. For example, the shaft S is rotatably supported by the housings 10A and 10D via bearings.

  Through holes H are provided at the four corner portions of the frames 20A to 20C. The motor A can be fixed at the installation location using these through holes H. Although FIG. 1 shows a state in which the through holes H below the frames 20A and 20C are connected to the fixture F at the installation location, the installation method of the motor A is not limited to this.

  FIG. 2 is an exploded perspective view showing the motor A. FIG. Here, illustration of housings 10A-10D is abbreviate | omitted.

  As shown in FIG. 2, the motor A is accommodated in a rotor RA accommodated in the housing 10A, a rotor RB accommodated in the housing 10B, a rotor RC accommodated in the housing 10C, and a housing 10D. And a rotor RD. Further, the motor A includes a stator 2A including a frame 20A, a stator 2B including a frame 20B, and a stator 2C including a frame 20C.

  The shaft S is passed through the centers of the rotors RA to RD and the stators 2A to 2C. The rotors RA to RD are attached to the shaft S and fixed to the shaft S. Thus, along the rotation axis AX1 of the shaft S, the rotor RA, the stator 2A, the rotor RB, the stator 2B, the rotor RC, the stator 2C, and the rotor RD are sequentially arranged and spaced from each other. Opposite.

  The rotors RA to RD include a support plate P, a plurality of permanent magnets M, and a plurality of iron cores C, and rotate around a rotation axis AX1. For example, the support plate P rotates about the rotation axis AX1. The iron core C is formed of a dust core obtained by compressing and hardening a ferromagnetic powder such as iron, for example. For example, the permanent magnet M and the iron core C have a long shape extending radially around the rotation axis AX1, and are alternately arranged in the circumferential direction around the rotation axis AX1. In the rotor RA, permanent magnets M and iron cores C are disposed on one surface of a support plate P facing the stator 2A. In the rotors RB and RC, permanent magnets M and iron cores C are arranged on both surfaces of the support plate P. The support plates P of the rotors RB and RC may be constituted by two support plates that are integrated by joining two support plates in a direction parallel to the rotation axis AX1. In the rotor RD, permanent magnets M and iron cores C are disposed on one surface of a support plate P facing the stator 2C.

  FIG. 3 is a cross-sectional view showing a part of the motor A. The motor A of the present embodiment has three sets of structures in which a stator is disposed between two rotors. Here, one set of the above structures will be described as a representative. Therefore, in FIG. 3, the rotors RA and RB, a part of the stator 2A, and the shaft S are shown, and illustration of the other elements is omitted.

  As shown in FIG. 3, the stator 2 </ b> A includes a first support plate 3 and a second support plate 4. Each of the support plates 3 and 4 is preferably formed of a nonmagnetic and nonconductive material. For example, each support plate 3 and 4 can be formed of fiber reinforced plastic (FRP). Moreover, each support plate 3 and 4 can also be formed with a ceramic material. Since the ceramic material is excellent in thermal conductivity, heat radiation from the stators 2A to 2C is facilitated, which contributes to reducing the size and weight of the motor A and increasing the output.

  Furthermore, the stator 2A includes a first iron core 81, a second iron core 82, a third iron core 83, a first coil 91, and a second coil 92 disposed between the support plates 3 and 4. ing. The first iron core 81, the second iron core 82, and the third iron core 83 are arranged in order toward the rotation axis AX1. The first coil 91 is disposed between the first iron core 81 and the second iron core 82, and the second coil 92 is disposed between the second iron core 82 and the third iron core 83. The iron cores 81 to 83 are exposed from the support plates 3 and 4 and face the rotors RA and RB.

  Each of the rotors RA and RB further includes a cylindrical connection portion I. Each connection I connects the shaft S and the support plate P at a position in an annular space between the shaft S and the support plate P. The rotors RA and RB are each fixed to the shaft S via the connection portion I.

  When current flows through the coils 91 and 92, magnetic flux is generated around the coils 91 and 92 as indicated by the broken lines and arrows. The magnetic fluxes passing through the iron cores 81 to 83 are substantially parallel to the rotation axis AX1. These magnetic fluxes act on the permanent magnets M of the rotors RA and RB, and the rotors RA and RB and the shaft S rotate about the rotation axis AX1.

  The same magnetic flux as that of the stator 2A is generated also in the above-described stators 2B and 2C. Three-phase alternating current is supplied to each of the coils 91 and 92 of the stators 2A to 2C.

  Subsequently, the stator 2A will be described on behalf of the stators 2A to 2C. The stators 2B and 2C have the same structure as that of the stator 2A, and thus the description thereof is omitted. FIG. 4 is an exploded perspective view showing the stator 2A.

  As shown in FIG. 4, the stator 2A includes the first support plate 3, the second support plate 4, the frame 20A, the plurality of first iron cores 81, the plurality of second iron cores 82, and the plurality of third cores, as described above. An iron core 83, a first coil 91 and a second coil 92 are provided. Furthermore, the stator 2A includes first pressing members 5A and 5B, second pressing members 6A and 6B, and third pressing members 7A and 7B. These pressing members are preferably formed of a nonmagnetic and nonconductive material, and can be formed of, for example, various plastics.

  The plurality of first iron cores 81 are arranged along the first circumference B1 with the rotation axis AX1 as the center. The plurality of second iron cores 82 are arranged along a second circumference B2 centered on the rotation axis AX1 and having a smaller radius than the first circumference B1. The plurality of third iron cores 83 are arranged along a third circumference B3 centered on the rotation axis AX1 and having a radius smaller than the second circumference B2. The arrangement interval of the first iron cores 81 in the circumferential direction along the first circumference B1 may be constant or may differ at least in part. The same applies to the second iron core 82 and the third iron core 83.

  The first coil 91 and the second coil 92 are annular and are arranged concentrically around the rotation axis AX1. The radius of the second coil 92 is smaller than the radius of the first coil 91. The first coil 91 and the second coil 92 are configured by winding a flat wire in the circumferential direction around the rotation axis AX1. In each of the first coil 91 and the second coil 92, for example, a plurality of strands are stacked in a plurality of stages in an axial direction parallel to the rotation axis AX1 and in a radial direction around the rotation axis AX1.

  The first support plate 3 is an annular disc centered on the rotation axis AX1, and includes a circular central opening 30 through which the shaft S passes, a plurality of first openings 31 corresponding to the first iron core 81, A plurality of second openings 32 corresponding to the two iron cores 82 and a plurality of third openings 33 corresponding to the third iron core 83 are provided.

  The second support plate 4 has substantially the same shape as the first support plate 3 and has a central opening 40, a plurality of first openings 41, a plurality of second openings 42, and a plurality of third openings 43. ing. Furthermore, the second support plate 4 has a slit 46 for drawing out the wire of the second coil 92.

  The first pressing member 5 </ b> A is an annular disk whose outer diameter is equal to the outer diameter of the first support plate 3, for example. The first pressing member 5A has a plurality of notches 50 arranged at the same pitch as the plurality of first iron cores 81 on the inner peripheral side. The plurality of second pressing members 6A are annularly arranged at the same pitch as the plurality of second iron cores 82. The third pressing member 7A is, for example, an annular disc whose inner diameter is equal to the diameter of the central opening 30. The third presser member 7 </ b> A has a plurality of notches 70 arranged at the same pitch as the plurality of third iron cores 83 on the outer peripheral side. The shapes and arrangement of the first pressing member 5B, the second pressing members 6B and the third pressing members 7B are the same as those of the first pressing members 5A, the second pressing members 6A and the third pressing members 7A.

  The frame 20A has a circular opening 21 having a diameter smaller than the outer diameter of each of the support plates 3 and 4 and larger than the outer diameter of the first pressing members 5A and 5B. Furthermore, the frame 20A has an annular step portion 22, and the step portion 22 has the opening 21 described above. The step portion 22 is provided on both the first support plate 3 side and the second support plate 4 side.

  FIG. 5 is a plan view showing the stator 2A. Here, a state in which the stator 2A is viewed from the second support plate 4 side is shown, and it is assumed that a part of the second support plate 4 is broken in some areas, and the first coil 91 and the second coil 92 are assumed. The first pressing member 5B, the second pressing member 6B, the third pressing member 7B, the first iron core 81, the second iron core 82, and the third iron core 83 are shown.

  As shown in FIG. 5, in the circumferential direction around the rotation axis AX <b> 1, the second iron core 82 is shifted from the third iron core 83, and the angle formed by the second iron core 82 with respect to the third iron core 83 is The electrical angle corresponds to, for example, 120 °. Similarly, the first iron core 81 is displaced with respect to the second iron core 82, and the angle formed by the first iron core 81 with respect to the second iron core 82 is an electrical angle, for example, corresponding to 120 °.

  In the present embodiment, the pitch E1 of the first iron core 81 along the first circumference B1 is not constant but is different at least in part. Here, the pitch E1 is a distance from the center of an arbitrary first iron core 81 to the center of the adjacent first iron core 81 on the first circumference B1. Similarly, the pitch E2 of the second iron core 82 along the second circumference B2 and the pitch E3 of the third iron core 83 along the third circumference B3 are not constant, but differ at least in part. . The two lead portions 91a of the strands of the first coil 91 and the two lead portions 92a of the strands of the second coil 92 are led out of the frame 20A through holes provided in the frame 20A, for example.

  Subsequently, the rotor RA will be described on behalf of the rotors RA to RD. FIG. 6 is a perspective view showing the rotor RA shown in FIG. In FIG. 6, all of the first screw T1 is not shown.

  As shown in FIG. 6, as described above, the rotor RA includes the support plate P, the connection portion I, the plurality of permanent magnets M, and the plurality of iron cores C. The rotor RA further includes a plurality of pressing members G and a plurality of first screws T1 and a plurality of second screws T2 as fasteners. In the present embodiment, the first screw T1 and the second screw T2 are bolts.

  The support plate P is formed of stainless steel (SUS). However, unlike the present embodiment, the support plate P may be formed of various plastics. The support plate P is, for example, a disk having an opening at least in the center.

  The plurality of permanent magnets M are disposed on the support plate P. When each permanent magnet M is viewed in a direction parallel to the rotation axis AX1, the permanent magnets M have a line-symmetrical shape. The permanent magnet M has a symmetry axis AX2 extending from the outer peripheral edge Po side of the support plate P to the inner side (inner peripheral Pi side). In the present embodiment, the symmetry axis AX2 of each permanent magnet M is parallel to the radial direction d2 from the rotation axis AX1. The plurality of permanent magnets M are arranged at intervals in the circumferential direction d1 centered on the rotation axis AX1. In the pair of permanent magnets M adjacent to each other, the same magnetic poles are adjacent to each other.

  The plurality of iron cores C are fixed to the support plate P, arranged alternately with the plurality of permanent magnets M in the circumferential direction d1, pressing one magnetic pole of the adjacent permanent magnets M to the support plate P side, together with the support plate P A plurality of permanent magnets M are fixed. The magnetism of the magnetic pole of one permanent magnet M pressed by each iron core C and the magnetism of the magnetic pole of the other permanent magnet M pressed by the iron core C are the same. From the above, the magnetic pole pressed by each iron core C is either one of the N pole and the S pole. Although not all the magnetic poles are denoted by reference signs N and S, N is attached to the N-pole magnetic pole and S is attached to the S-pole magnetic pole, respectively. Each of the plurality of iron cores C has a major axis AX3 extending from the outer peripheral edge Po side of the support plate P to the inner side (inner peripheral Pi side). In the present embodiment, each major axis AX3 is parallel to the radial direction d2.

  Of the iron core C, the first end C3 on the inner circumference Pi side is fixed to the support plate P by the first screw T1, and the second end C4 on the outer peripheral edge Po side is fixed to the support plate P by the second screw T2. ing. As a result, the permanent magnet M is tightened in the circumferential direction d1 by the iron core C, pressed against the support plate P side, and the position is fixed. From the above, the first screw T1 and the second screw T2 function as set screws.

  The holding member G is an arc-shaped plate extending in the circumferential direction d1. The pressing member G is fixed to the support plate P by the second screw T2 together with the iron core C. The pressing member G is located closer to the outer peripheral edge Po than the permanent magnet M is. The pressing member G opposes the second main body C1 of the plurality of iron cores C in the radial direction d2 and guards the plurality of permanent magnets M. In the direction parallel to the symmetry axis AX2, the second main body C1 is located between the first end C3 and the second end C4. Therefore, even if the permanent magnet M is pulled out from between the iron cores C, the pressing member G can prevent the permanent magnet M from coming off the rotor RA.

  As described above, the rotor RA includes the plurality of pressing members G arranged in the circumferential direction d1, but is not limited to the present embodiment. For example, the rotor RA may include a single annular pressing member extending in the circumferential direction d1 instead of the plurality of pressing members G.

  Next, a method for assembling the rotor RA will be described. FIG. 7 is an exploded perspective view showing the rotor RA shown in FIG. In FIG. 7, all of the first screw T1 and the second screw T2 are not shown.

  As shown in FIG. 7, when the assembly of the rotor RA is started, first, the first screw T1 is passed through the hole h1 of the first end C3 of the iron core C, and the screw hole Ph1 on the inner periphery Pi side of the support plate P Tighten. Thereby, the final tightening of the first screw T1 is performed.

  Subsequently, the second screw T2 is passed through the hole h2 of the second end C4 of the iron core C, is not passed through the hole h3 of the pressing member G, and is tightened into the screw hole Ph2 on the outer peripheral edge Po side of the support plate P. Thereby, the second screw T2 is temporarily tightened. In addition, about the 2nd screw T2 which does not plan to pass the hole h3, you may perform final fastening instead of temporary fastening. Next, the permanent magnet M is inserted from the outer peripheral edge Po side toward the inner peripheral Pi side in a direction parallel to the radial direction d2. Thereafter, the second screw T2 is removed. Subsequently, the second screw T2 is sequentially passed through the hole h3 and the hole h2 and tightened in the screw hole Ph2. Thereby, the final tightening of the second screw T2 is performed. Thereby, the assembly of the rotor RA is completed.

  Next, the permanent magnet M will be described. FIG. 8 is a configuration diagram illustrating the permanent magnet M illustrated in FIG. 6. Here, FIG. 8 (A) is a plan view of the permanent magnet M viewed in a direction parallel to the rotation axis AX1, and FIG. 8 (B) is a permanent magnet along the line VIIIB-VIIIB in FIG. 8 (A). It is sectional drawing which shows the cross section of M with the cross section of the support plate P. FIG.

  As shown in FIG. 8, in plan view, the permanent magnet M has a fan-like shape. The permanent magnet M includes a first main body portion M1 extending along the symmetry axis AX2 and a pair of first collar portions M2. Each first collar M2 extends along with the first main body M1 along the first main body M1, and has a first contact surface Ms facing away from the support plate P side. It is integrally formed with the main body portion M1.

  In each first collar M2, the width W1 of the first contact surface Ms in the direction orthogonal to the symmetry axis AX2 is narrower on the inner peripheral Pi side than on the outer peripheral Po side. In addition, in a virtual plane orthogonal to the symmetry axis AX2, the cross-sectional area of the first collar portion M2 is smaller on the inner peripheral Pi side than on the outer peripheral Po side.

  Next, the iron core C will be described. FIG. 9 is a block diagram showing the iron core C shown in FIG. Here, FIG. 9 (A) is a plan view of iron core C viewed from a direction parallel to rotation axis AX1, and FIG. 9 (B) is a diagram of iron core C along line IXB-IXB of FIG. 9 (A). 4 is a cross-sectional view showing a cross section together with a cross section of a support plate P. FIG.

  As shown in FIG. 9, in plan view, the iron core C has a fan-like shape. The iron core C further includes a second main portion C1 extending along the major axis AX3 and a pair of second flange portions C2 in addition to the first end C3 and the second end C4 described above. Yes. The second body portion C1, the second flange portion C2, the first end C3, and the second end C4 are integrally formed. Each of the second collar portions C2 has a second contact surface Cs that extends along with the second body portion C1 along the second body portion C1 and faces the support plate P side.

  In each of the second flange portions C2, the width W2 of the second contact surface Cs in the direction orthogonal to the major axis AX3 is narrower on the inner circumference Pi side than on the outer peripheral edge Po side. Further, in a virtual plane orthogonal to the major axis AX3, the cross-sectional area of the second flange portion C2 is smaller on the inner periphery Pi side than on the outer peripheral edge Po side.

  Next, the correspondence between the permanent magnet M shown in FIG. 6 and the pair of iron cores C including the iron core C shown in FIG. 9 will be described.

  FIG. 10 is a block diagram showing the permanent magnet M shown in FIG. 6 and a pair of iron cores C including the iron core C shown in FIG. With respect to the iron core C, the second main body portion C1 and the second flange portion C2 are taken out and shown. FIG. 10A is a plan view of the permanent magnet M and the pair of iron cores C in a direction parallel to the rotation axis AX1, and FIG. 10B is along the line XB-XB in FIG. It is sectional drawing which shows the permanent magnet M, a pair of iron core C, and the support plate P. As shown in FIG.

  Although the permanent magnet M is inserted between the pair of iron cores C, only the symmetry axis AX2 with respect to the permanent magnet M is shown in FIG. In FIG. 10A, line XB-XB is a line segment orthogonal to long axis AX3 of iron core C on the left and overlapping with iron core C on the left, iron core C on the left and iron core C on the right, orthogonal to symmetry axis AX2. And a line segment that is perpendicular to the long axis AX3 of the right iron core C and overlaps the right iron core C.

  As shown in FIG. 10, the pair of iron cores C is in a line-symmetric positional relationship with respect to the symmetry axis AX2. The pair of first flange portions M2 respectively project from the first main body M1 toward the adjacent iron core C among the plurality of iron cores C. Each of the pair of second collar portions C2 protrudes from the second main body portion C1 to the adjacent permanent magnet M side among the plurality of permanent magnets M.

  In the iron core C and the permanent magnet M adjacent to each other, the second contact surface Cs of the second flange portion C2 is in contact with the first contact surface Ms of the first flange portion M2. At least a part of the contact surface Cs is in contact with the contact surface Ms in a region where the contact surface Cs and the contact surface Ms face each other. The pair of iron cores C hold the permanent magnet M against the support plate P. From the above, the plurality of iron cores C press the plurality of permanent magnets M against the support plate P. The second main body portion C1 is positioned on the support plate P with a gap.

  When the support plate P is at the lower side and the permanent magnet M is at the upper side on a virtual plane orthogonal to the symmetry axis AX2 and passing through the first main body portion M1 and the first flange portion M2, the cross section of the permanent magnet M is T-shaped Has a shape upside down. When the support plate P is on the lower side and the iron core C is on the upper side on a virtual plane orthogonal to the major axis AX3 and passing through the second main body portion C1 and the second flange portion C2, the cross section of the iron core C is T-shaped have.

  11 is a cross-sectional view showing the rotor RA along the line XI-XI of FIG. In FIG. 11, the line XI-XI includes a line segment passing through the symmetry axis AX2 of the permanent magnet M and a line segment passing through the long axis AX3 of the iron core C.

  As shown in FIG. 11, the first end C3 is fixed to the support plate P by the first screw T1 and is integrally formed with the second main body C1. In the present embodiment, the first end C3 is in contact with the support plate P.

  The second end C4 is located closer to the outer peripheral edge Po than the second main body C1, is fixed to the support plate P by a second screw T2, and is integrally formed with the second main body C1. In the present embodiment, the second end C4 is located with a gap in the support plate P. However, as long as the permanent magnet M can be pressed against the support plate P by the iron core C, the second end C4 may be in contact with the support plate P.

  Each pressing member G is located on the outer peripheral edge Po side from the plurality of permanent magnets M and the plurality of second main body portions C1. Each pressing member G is opposed to the plurality of permanent magnets M and the plurality of second main portions C1 in the direction perpendicular to the rotation axis AX1. Each pressing member G is fixed to the support plate P together with the plurality of second ends C4 by the second screw T2.

  In a state where the plurality of first screws T1 and the plurality of second screws T2 are fastened to the support plate P, the surface C3s of each first end C3 opposite to the side facing the support plate P, each first The surface C4s opposite to the side facing the support plate P of the two ends C4, the surface Gs opposite to the side facing the support plate P of each pressing member G, and the head of each first screw T1 T1h and head T2h of each second screw T2 are respectively on the support plate P side from the imaginary surface Y1 extending from the surface C1s opposite to the side facing the support plate P of the second main portion C1 It is located in With regard to the first screw T1 and the second screw T2, the end of the first screw T1 opposite to the side tightened to the support plate P and the second screw T2 opposite to the side tightened to the support plate P The end of the frame is located closer to the support plate P than the plane Y1. Further, the surface C1s and the surface Y1 are on the same plane.

  In the present embodiment, in the above state, the surface C3s, the surface C4s, the surface Gs, the head T1h, and the head T2h respectively face the support plate P of the first main portion M1. Is located on the support plate P side from a virtual surface Y2 extending from the surface M1s on the opposite side. The plane M1s and the plane Y2 are on the same plane.

  According to the motor A according to the embodiment configured as described above, the motor A includes the rotor R such as the rotor RA. The rotor R includes a support plate P, a plurality of permanent magnets M disposed on the support plate, and a plurality of permanent magnets M fixed to the support plate P and arranged alternately with the plurality of permanent magnets M in the circumferential direction d1. A plurality of iron cores C for pressing one magnetic pole to the support plate P side and fixing a plurality of permanent magnets M together with the support plate P are provided. The permanent magnet M can be fixed using the permanent magnet M.

  The permanent magnet M can be fixed without using members other than the first screw T1 and the second screw T2 for fixing the iron core C and the iron core C to the support plate P. The number of members used for fixing the permanent magnet M can be reduced. Therefore, it can contribute to the reduction of manufacturing cost. Or it can contribute to shortening of manufacturing time.

  Alternatively, the torque of the motor A can be increased. This is because the space occupied by the permanent magnet M can be expanded by an amount corresponding to the reduction in the number of members as described above. As a result, the size of each permanent magnet M can be increased, and the magnetic force of each permanent magnet M can be increased.

  Alternatively, downsizing of the rotor R can be achieved, which can contribute to downsizing of the motor A.

  In the permanent magnet M, the width W1 of the first flange portion M2 is narrower on the inner circumference Pi side than on the outer circumference Po side. Since the reduction of the volume by the side of inner circumference Pi of the 1st main part M1 can be controlled by that much, the reduction of the volume by the side of inner circumference Pi of permanent magnet M can be controlled. As a result, the torque of the motor A can be increased, which contributes to the improvement of the characteristics of the motor A. In addition, since the amount of magnet used on the inner circumference Pi side of the first flange portion M2 can be reduced, the amount of magnet necessary for fixing the permanent magnet M can be reduced.

  The iron core C is formed of a dust core. By using the mold, it is possible to manufacture the iron core C as a single piece in a highly flexible shape. Since the configuration of the iron core C can be unified, it can contribute to shortening of the LT. Moreover, the process of producing the iron core C can be reduced. Furthermore, it can contribute to the improvement of the characteristic of the motor A.

  Next, a modification of the motor A according to the above embodiment will be described.

(Modification 1)
Next, the motor A according to Modification 1 will be described. FIG. 12 is a configuration diagram showing a permanent magnet M and a pair of iron cores C according to the first modification. FIG. 12 (A) is a plan view of permanent magnet M and a pair of iron cores C viewed in a direction parallel to rotation axis AX1, and FIG. 12 (B) is along line XIIB-XIIB in FIG. 12 (A). It is sectional drawing which shows the permanent magnet M, a pair of iron core C, and the support plate P. As shown in FIG.

  In addition, although a pair of iron cores C are located in the both sides of the permanent magnet M, only long-axis AX3 is shown regarding the iron core C in FIG. 12 (A). In FIG. 12A, a line XIIB-XIIB is perpendicular to the symmetry axis AX2 and passes through the first collar portion M2 and overlaps with the permanent magnet M, and to the long axis AX3 of the left iron core C and perpendicular to the long axis AX3. A line segment overlapping the left area and a line segment orthogonal to the major axis AX3 of the right iron core C and overlapping the right area of the permanent magnet M are included.

  As shown in FIG. 12, the iron core C is configured in the same manner as the iron core C shown in FIG. The permanent magnet M includes a first main body portion M1 and a plurality of first collar portions M2. The plurality of first flange portions M2 respectively project from the first main portion M1 toward the adjacent iron core C among the plurality of iron cores C, and are intermittently provided in the direction in which the first main portion M1 extends. It has the 1st contact surface Ms which faced the opposite side to P side, and is formed integrally with the 1st main-body part M1. In each first flange portion M2, the area of the first contact surface Ms is smaller on the inner peripheral Pi side than on the outer peripheral edge Po side.

  In the first modification, the first main body portion M1 is formed by arranging the physically independent first member M1a, second member M1b, and third member M1c along the symmetry axis AX2. In plan view, the first member M1a has a sector shape, the second member M1b has a size and sector shape larger than the first member M1a, and the third member M1c has a size larger than the second member M1b and It has a fan-like shape. The first member M1a, the second member M1b, and the third member M1c are joined and integrally formed. However, the first member M1a, the second member M1b, and the third member M1c may be physically independent without being joined. The pair of first flanges M2 is integrally formed with each of the first member M1a, the second member M1b, and the third member M1c.

  According to the motor A according to the first modification configured as described above, the same effect as that of the above embodiment can be obtained.

(Modification 2)
Next, the motor A according to Modification 2 will be described. FIG. 13 is a configuration diagram showing a permanent magnet M and a pair of iron cores C according to the second modification. FIG. 13A is a plan view of the permanent magnet M in a direction parallel to the rotation axis AX1, and FIG. 13B is a view from a direction parallel to the rotation axis AX1 of the permanent magnet M and the pair of iron cores C. FIG. 13C is a sectional view showing the permanent magnet M, the pair of iron cores C, and the support plate P along the line XIIIC-XIIIC in FIG. 13B.

  In FIG. 13B, only the symmetry axis AX2 is shown with respect to the permanent magnet M, and the second main portion C1 is shown with respect to the iron core C. In FIG. 13 (B), a line XIIIC-XIIIC includes a line segment perpendicular to the long axis AX3 of the left iron core C and overlapping the left iron core C, a left iron core C and a right iron core C perpendicular to the symmetry axis AX2. And a line segment orthogonal to the major axis AX3 of the right iron core C and overlapping the right iron core C.

  As shown in FIG. 13, the permanent magnet M includes the first main body portion M <b> 1 and does not include the first flange portion M <b> 2. The first main body portion M1 has a pair of first contact surfaces Ms facing the adjacent iron cores C among the plurality of iron cores C, respectively. Each iron core C includes a second body portion C1 and does not include a second collar portion C2. Each of the second main portions C1 has a pair of second contact surfaces Cs opposed to the first contact surfaces Ms of the adjacent permanent magnets M among the plurality of permanent magnets M.

  On a virtual plane orthogonal to the symmetry axis AX2 and passing through the pair of first contact surfaces Ms, when the support plate P is on the lower side and the permanent magnet M is on the upper side, the pair of first contact surfaces Ms are forward tapered. It is a face. When the support plate P is on the lower side and the iron core C is on the upper side on a virtual plane orthogonal to the major axis AX3 and passing through the pair of second contact surfaces Cs, the pair of second contact surfaces Cs are reverse tapered surfaces It is.

  In other words, on a virtual plane orthogonal to the axis of symmetry AX2 and passing through the pair of first contact surfaces Ms, each first contact surface Ms is a surface Ps of the support plate P facing the permanent magnet M. , And a plane U perpendicular to the plane Ps.

  In the iron core C and permanent magnet M which adjoin, the 2nd contact surface Cs is in contact with the 1st contact surface Ms. The plurality of iron cores C hold the plurality of permanent magnets M against the support plate P.

  According to the motor A of the second modification configured as described above, the same effect as that of the above embodiment can be obtained.

(Modification 3)
Next, a motor A according to Modification 3 will be described. FIG. 14 is a configuration diagram showing a permanent magnet M and a pair of iron cores C according to the third modification. FIG. 14A is a plan view of the permanent magnet M viewed in a direction parallel to the rotation axis AX1, and FIG. 14B is a view from a direction parallel to the rotation axis AX1 of the permanent magnet M and the pair of iron cores C. It is the seen top view. In FIG. 14B, only the symmetry axis AX2 is shown with respect to the permanent magnet M, and the second main body C1 and the second collar C2 are taken out with respect to the iron core C.

  As shown in FIG. 14, the width W1 of the first flange portion M2 of the permanent magnet M is narrower on the inner peripheral Pi side than on the outer peripheral edge Po side. The width W1 on the innermost circumference Pi side of the first flange portion M2 of the third modification is zero. It differs from the permanent magnet M shown in FIG. 8 in the above point. In plan view, the first main portion M1 has a rectangular shape instead of a fan-like shape. In a virtual plane orthogonal to the symmetry axis AX2, the cross-sectional area of the first main body portion M1 can be made constant.

  The shape of the iron core C is associated with the permanent magnet M. The width W2 of the second flange portion C2 of the iron core C is narrower on the inner peripheral Pi side than on the outer peripheral edge Po side. For example, the width W2 on the innermost circumference Pi side of the second flange portion C2 of the third modification is zero. It may be different from the iron core C shown in FIG. 9 in the above point. In plan view, the second main body portion C1 has a rectangular shape, not a fan-like shape. However, when the width W2 on the innermost circumference Pi side of the second flange portion C2 exceeds 0, the second main portion C1 has a fan-like shape.

  In the third modification, the iron core C may not be formed of a dust core. The iron core C may be formed by laminating a plurality of non-oriented electrical steel sheets in a direction parallel to the long axis AX3. The laminated electromagnetic steel sheets may be fixed by an adhesive or may be fixed by impregnating the resin and curing the resin. In these cases, the electromagnetic steel sheet is not deformed, so the electromagnetic characteristics of the iron core C become entirely good. The laminated electromagnetic steel sheets can also be fixed by welding. In this case, manufacture of the iron core C becomes easy.

  Moreover, when laminating a magnetic steel plate, it is necessary to process the external shape of each magnetic steel plate. However, by manufacturing the electromagnetic steel sheet by press processing, the dimensional accuracy of the iron core C can be improved, and the characteristics of the motor A can also be improved.

  According to the motor A of the third modification configured as described above, the same effect as that of the above embodiment can be obtained.

(Modification 4)
Next, the motor A according to Modification 4 will be described. FIG. 15 is a configuration diagram showing a permanent magnet M and a pair of iron cores C according to the fourth modification. FIG. 15A is a plan view of the permanent magnet M viewed in a direction parallel to the rotation axis AX1, and FIG. 15B is a view from a direction parallel to the rotation axis AX1 of the permanent magnet M and the pair of iron cores C. FIG. 15C is a cross-sectional view showing the permanent magnet M, the pair of iron cores C, and the support plate P along the line XVC-XVC in FIG. 15B.

  In FIG. 15B, only the symmetry axis AX2 is shown with respect to the permanent magnet M, and the second main portion C1 and the second flange portion C2 are shown with respect to the iron core C. In FIG. 15B, a line XVC-XVC includes a line segment perpendicular to the long axis AX3 of the left iron core C and overlapping the left iron core C, a left iron core C and a right iron core C perpendicular to the symmetry axis AX2. And a line segment orthogonal to the major axis AX3 of the right iron core C and overlapping the right iron core C.

  As shown in FIG. 15, the permanent magnet M includes a first main body M1, a pair of first collars M2a, and a pair of first collars M2b. The pair of first collar portions M2a is located between the support plate P and the pair of first collar portions M2b and is in contact with the support plate P. The amount of protrusion of the first flanges M2a and M2b toward the opposing core C is smaller on the inner circumference Pi side than on the outer peripheral edge Po side. The first flange portion M2a has a first contact surface Ms facing away from the support plate P side.

  On the other hand, in the iron core C, the second flange portion C2 is located between the first flange portion M2a and the first flange portion M2b. The amount of protrusion of the second flange portion C2 to the opposing permanent magnet M side is smaller on the inner periphery Pi side than on the outer peripheral edge Po side. The second flange portion C2 has a second contact surface Cs facing the support plate P side.

  In the iron core C and the permanent magnet M adjacent to each other, the second contact surface Cs of the second flange portion C2 is in contact with the first contact surface Ms of the first flange portion M2a.

  On a virtual plane perpendicular to the axis of symmetry AX2 and passing through the first body part M1 and the first collar parts M2a and M2b, when the support plate P is on the lower side and the permanent magnet M is on the upper side, the cross section of the permanent magnet M is It has an I shape. On a virtual plane orthogonal to the long axis AX3 and passing through the second main body C1 and the second collar C2, when the support plate P is the lower side and the iron core C is the upper side, the cross section of the iron core C has a cross shape. Have.

  According to the motor A which concerns on the modification 4 comprised as mentioned above, the effect similar to the said embodiment can be acquired.

(Modification 5)
Next, a motor A according to Modification 5 will be described. FIG. 16 is a configuration diagram showing a permanent magnet M and a pair of iron cores C according to the fifth modification. FIG. 16A is a plan view of the permanent magnet M in a direction parallel to the rotation axis AX1, and FIG. 16B is a view from a direction parallel to the rotation axis AX1 of the permanent magnet M and the pair of iron cores C. FIG. 16C is a cross-sectional view showing the permanent magnet M, the pair of iron cores C, and the support plate P along the line XVIC-XVIC in FIG. 16B.

  In FIG. 16B, only the symmetry axis AX2 is shown with respect to the permanent magnet M, and the second main portion C1 and the second flange portion C2 are shown with respect to the iron core C. In FIG. 16B, a line XVIC-XVIC includes a line segment perpendicular to the long axis AX3 of the left second main body C1 and overlapping with the left iron core C, and the left iron core C perpendicular to the symmetry axis AX2 It includes a line segment overlapping with the region between the iron core C and a line segment orthogonal to the long axis AX3 of the second main body C1 on the right and overlapping with the iron core C on the right.

  As shown in FIG. 16, in plan view, the permanent magnet M has a parallelogram shape, and the first main portion M1 has a rectangular shape. In a virtual plane orthogonal to the symmetry axis AX2, the cross-sectional area of the first main portion M1 is constant. The width W1 of the left first flange portion M2 of the pair of first flange portions M2 is narrower at the inner periphery Pi side than at the outer peripheral edge Po side, and is 0 at the inner periphery Pi side. On the other hand, the width W1 of the first flange portion M2 on the right side is narrower at the outer peripheral edge Po side than at the inner periphery Pi side, and is 0 at the outermost peripheral edge Po side.

  The shape of the iron core C is associated with the permanent magnet M. In plan view, the second main body portion C1 has a fan-like shape. Of the pair of second flanges C2 of each iron core C, the width W2 of the second flange C2 on the left side is narrower at the outer peripheral edge Po than at the inner periphery Pi and is 0 at the outermost peripheral edge Po side . On the other hand, the width W2 of the second flange C2 on the right side is narrower at the inner circumference Pi side than at the outer rim Po side, and is 0 at the inner circumference Pi side. Here, the width W2 is the width in the direction orthogonal to the major axis AX3.

  In the iron core C and the permanent magnet M adjacent to each other, the second contact surface Cs of the second flange portion C2 is in contact with the first contact surface Ms of the first flange portion M2. The total area in which the pair of second contact surfaces Cs is in contact with the pair of first contact surfaces Ms is substantially the same as the outer peripheral edge Po also on the inner periphery Pi side. Therefore, the fixation of the permanent magnet M can be strengthened also on the inner circumference Pi side.

  According to the motor A concerning the modification 5 comprised as mentioned above, the effect similar to the said embodiment can be acquired.

(Modification 6)
Next, a motor A according to Modification 6 will be described. Here, the rotor RA among the plurality of rotors R will be described as a representative. FIG. 17 is a plan view showing a rotor RA of a motor A according to Modification 6, and is a view showing a support plate P and a plurality of permanent magnets M. As shown in FIG. Here, illustration other than the support plate P and the permanent magnet M is omitted.

  As shown in FIG. 17, the plurality of permanent magnets M are arranged at an equal mechanical angle in the circumferential direction d1. The mechanical angle β formed by the symmetry axes AX2 of the permanent magnets M adjacent in the circumferential direction d1 is constant. The pitch K of the permanent magnet M along the circumference J whose center is the rotation axis AX1 is constant. Here, the pitch K is the distance from the symmetry axis AX2 of an arbitrary permanent magnet M to the symmetry axis AX2 of the adjacent permanent magnet M on the circumference J.

  The symmetry axis AX2 of each permanent magnet M does not pass through the rotation axis AX1 of the support plate P, but passes through a region out of the rotation axis AX1. The configuration of the plurality of permanent magnets M as described above is referred to as a skew configuration. Focusing on the above-described stators 2A to 2C, in the modification 6, the pitch E1 of the first iron core 81, the pitch E2 of the second iron core 82, and the pitch E3 of the third iron core 83 shown in FIG. It is constant.

  In the sixth modification, since the configuration of the plurality of permanent magnets M of the rotor R is a skew configuration, a skew effect can be obtained on the rotor R side. And the torque ripple of the motor A can be reduced.

  On the stators 2A to 2C side, the pitches E1, E2, and E3 can be made constant. Parts shapes such as the second pressing members 6A and 6B can be unified, and parts such as the first pressing members 5A and 5B and the third pressing members 7A and 7B can be simply shaped and arranged. As it is possible to standardize parts, it can contribute to shortening of LT and reduction of manufacturing cost.

  Also in the sixth modification, the iron core C fixes the permanent magnet M together with the support plate P.

  According to the motor A of the sixth modification configured as described above, the same effect as that of the above embodiment can be obtained.

(Modification 7)
Next, the motor A according to the modified example 7 will be described. Here, among the plurality of rotors R, the rotor RA will be described as a representative. FIG. 18 is a plan view showing a rotor RA of a motor A according to Modification 7, and is a view showing a support plate P and a plurality of permanent magnets M. As shown in FIG. Here, illustration other than the support plate P and the permanent magnet M is omitted.

  As shown in FIG. 18, each permanent magnet M is composed of a plurality of permanent magnets. In the seventh modification, each permanent magnet M includes a first permanent magnet MA and a second permanent magnet MB. The second permanent magnet MB is physically independent of the first permanent magnet MA, and is located closer to the outer peripheral edge Po than the first permanent magnet MA.

  The plurality of first permanent magnets MA are spaced apart from one another in the circumferential direction d. The plurality of second permanent magnets MB are spaced apart from one another in the circumferential direction d. In each permanent magnet M, a first straight line L1 passing through the rotation axis AX1 and the center of gravity MAc of the first permanent magnet MA passes through the second permanent magnet MB, and passes through the rotation axis AX1 and the center of gravity MBc of the second permanent magnet MB. The second straight line L2 passes through the first permanent magnet MA and is inclined with respect to the first straight line L1.

  In each permanent magnet M, the second straight line L2 passing through the center of gravity MBc is shifted in the circumferential direction d from the first straight line L1 passing through the center of gravity MAc. Here, an electrical angle formed by the second straight line L2 and the first straight line L1 is taken as α. The electrical angle α is neither 0 degree nor a multiple of 360 degrees.

  The plurality of first permanent magnets MA are arranged at an equal mechanical angle in the circumferential direction d, and the plurality of second permanent magnets MB are also arranged at an equal mechanical angle in the circumferential direction d. The mechanical angle β1 formed by the first straight line L1 passing through the center of gravity MAc of the first permanent magnet MA adjacent to the circumferential direction d1 is constant. The mechanical angle β2 formed by the second straight line L2 passing through the center of gravity MBc of the second permanent magnet MB adjacent in the circumferential direction d1 is constant. The pitch K1 of the first permanent magnet MA along the circumference J1 passing through the plurality of first permanent magnets MA is constant. Similarly, the pitch K2 of the second permanent magnet MB along the circumference J2 passing through the plurality of second permanent magnets MB is constant.

  The shape of the iron core C is associated with the permanent magnet M.

  In the seventh modification, as in the sixth modification, the pitch E1, the pitch E2, and the pitch E3 are each constant.

  In the present modification example 7, as in the modification example 6, the configuration of the plurality of permanent magnets M of the rotor R is a skew configuration, so that the same effect as in the modification example 6 can be obtained.

  And also in this modification 7, the iron core C is fixing the permanent magnet M (1st permanent magnet MA and 2nd permanent magnet MB) with the support plate P. FIG.

  According to the motor A of the seventh modification configured as described above, the same effect as that of the above embodiment can be obtained.

  While embodiments of the present invention have been described, the above embodiments have been presented by way of example only and are not intended to limit the scope of the invention. The above-described novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. The above embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof. Embodiments and modifications can be combined as necessary.

  For example, also in modifications other than the said embodiment and the said modification 3, the iron core C may be formed by laminating | stacking a some non-oriented electrical steel plate.

  In the above-mentioned embodiment, motor A provided with four rotors RA-RD and three stators 2A-2C was disclosed. However, the motor A may have a larger number of stators and rotors, or may have a smaller number of stators and rotors.

  The motor A described above can be applied to various vehicles such as a railway vehicle. The vehicle includes a motor A and wheels provided on both sides of a shaft S of the motor. The wheels are directly connected to the shaft S. The motor A is not configured to be transmitted to the wheels via a transmission device having a gear. Since there is no transmission loss compared to the case where a transmission device is used, energy efficiency can be improved. Moreover, it can contribute to size reduction of a vehicle.

  As shown in FIG. 19, the motor A can be applied to, for example, a main motor of the railway vehicle 100. The railway vehicle 100 includes a vehicle body 110, a bogie 120 disposed below the vehicle body 110, a drive device 130, and a pantograph 140 disposed above the vehicle body 110. In the illustrated example, two carriages 120 and two pantographs 140 are provided for the vehicle body 110, and two drive devices 130 are provided for each carriage 120. However, the invention is not limited to this example.

  The carriage 120 includes a carriage frame 121, a plurality of wheels 122 attached to the carriage frame 121, and an air spring 123 disposed between the carriage frame 121 and the vehicle body 110. The drive device 130 includes a motor A as a main motor. Furthermore, the drive device 130 includes a control device that controls the motor A, a transmission mechanism that transmits the rotational force of the motor A to the wheels 122, and the like. The pantograph 140 is in contact with the overhead line 150. The electric power taken in from the overhead line 150 via the pantograph 140 is supplied to the driving device 130, and the motor A is rotated by this electric power.

  In addition, the motor A mentioned above is applicable not only to a vehicle but to various apparatuses which require rotational power.

M: motor, S: shaft, RA to RD: rotor, 2A to 2C: stator,
P: support plate, O: center, Po: outer circumference, Pi: inner circumference, d1: circumferential direction, d2: radial direction M: permanent magnet, MA: first permanent magnet, MB: second permanent magnet, M1: first Body part,
M1a ... 1st member, M1b ... 2nd member, M1c ... 3rd member, M2 ... 1st collar part Ms ... 1st contact surface, G ... Holding member, T1 ... 1st screw, T2 ... 2nd screw,
C: iron core, C1: main body portion, C2: second flange portion, Cs: contact surface,
DESCRIPTION OF SYMBOLS 100 ... Rail vehicle, 110 ... Car body, 122 ... Wheel, 130 ... Drive apparatus,
AX1 ... rotation axis, AX2, AX2A, AX2B ... symmetry axis, AX3 ... long axis,
W1, W2: width, J, J1, J2: circumference, K, K1, K2: pitch.

Claims (8)

A support plate that rotates about a rotation axis;
A plurality of permanent magnets disposed on the support plate;
The magnetic pole is fixed to the support plate and arranged alternately with the plurality of permanent magnets in the circumferential direction about the rotation axis, and one magnetic pole of the permanent magnets adjacent to each other is pressed to the support plate side, and with the support plate A plurality of iron cores for fixing the plurality of permanent magnets;
Comprising a rotor having
The magnetism of the magnetic pole of one of the permanent magnets pressed by each of the iron cores and the magnetism of the magnetic poles of the other permanent magnet pressed by the iron core are the same.
Rotating electric machine. When each of the permanent magnets is viewed from a direction parallel to the rotation axis, the permanent magnet has a line-symmetric shape and a symmetry axis extending inwardly from the outer peripheral edge side of the support plate. The permanent magnet extends from the first main body portion to the adjacent iron core side of the plurality of iron cores, and extends along the first main body portion. The first main body portion extends in a direction parallel to the symmetry axis. A pair of first collar portions extending together with the first main body portion and having a first contact surface facing away from the support plate side and formed integrally with the first main body portion, In the first collar portion, the width of the first contact surface in the direction orthogonal to the symmetry axis is narrower on the inner side than on the outer peripheral edge side, or
When each of the permanent magnets is viewed from a direction parallel to the rotation axis, the permanent magnet has a line-symmetric shape and a symmetry axis extending inwardly from the outer peripheral edge side of the support plate. The permanent magnet projects from a first main body portion extending in a direction parallel to the axis of symmetry to the adjacent iron core side of the plurality of iron cores, and the first main body portion extends. A plurality of first collar portions that are provided intermittently in a direction and have a first abutment surface facing the opposite side of the support plate and formed integrally with the first body portion, In the first flange portion, the area of the first contact surface is smaller at the inner side than at the outer peripheral edge side, or
When each of the permanent magnets is viewed from a direction parallel to the rotation axis, the permanent magnet has a line-symmetric shape and a symmetry axis extending inwardly from the outer peripheral edge side of the support plate. Each of the permanent magnets has a pair of first abutting surfaces opposed to adjacent ones of the plurality of iron cores, and is on a virtual plane that is orthogonal to the symmetry axis and passes through the pair of first abutting surfaces. Each of the first contact surfaces is inclined with respect to a surface of the support plate on the side facing the permanent magnet and a plane perpendicular to the surface of the support plate.
The rotating electrical machine according to claim 1. A plurality of presser members;
A plurality of first screws;
A plurality of second screws;
Each said iron core
Body part,
A first end portion located on the inner side of the support plate from the main body portion, integrally formed with the main body portion, and fixed to the support plate by the first screw;
A second end located on the outer peripheral edge side of the main body, fixed to the support plate by the second screw, and formed integrally with the main body;
Each of the pressing members is positioned on the outer peripheral side of the plurality of permanent magnets and the plurality of main body portions, and faces the plurality of permanent magnets and the plurality of main body portions in a direction perpendicular to the rotation axis, Fixed to the support plate together with the plurality of second ends by a second screw;
In a state in which the plurality of first screws and the plurality of second screws are tightened to the support plate, a surface of each first end opposite to the side facing the support plate, the respective first ends Two ends of the surface opposite to the side facing the support plate, the face opposite to the side facing the support plate of each pressing member, the head of each of the first screws, and The heads of the second screws are respectively positioned on the support plate side from the surface extending from the surface of the main body portion opposite to the side facing the support plate.
The rotating electrical machine according to claim 1. When viewing each of the permanent magnets in a direction parallel to the rotation axis, the permanent magnets have an axisymmetric shape and a symmetry axis extending inward from the outer peripheral edge side of the support plate,
The plurality of permanent magnets are arranged at an equal mechanical angle in the circumferential direction,
The symmetry axis of each of the permanent magnets passes through an area out of the rotation axis,
The rotating electrical machine according to claim 1. Each of the permanent magnets includes a first permanent magnet, and a second permanent magnet which is physically independent of the first permanent magnet and located on the outer peripheral side of the support plate with respect to the first permanent magnet.
The plurality of first permanent magnets are spaced apart from one another in the circumferential direction,
The plurality of second permanent magnets are spaced apart from one another in the circumferential direction,
In each said permanent magnet,
A first straight line passing through the rotation axis and the center of gravity of the first permanent magnet passes through the second permanent magnet.
A second straight line passing through the rotation axis and the center of gravity of the second permanent magnet passes through the first permanent magnet and is inclined with respect to the first straight line;
The rotating electrical machine according to claim 1. The iron core is formed of a dust core.
The rotating electrical machine according to claim 1. A shaft fixed to the rotor;
And a stator facing the rotor in a direction parallel to the rotation axis with a gap therebetween.
The rotating electrical machine according to claim 1. The rotating electrical machine according to claim 1,
Wheels provided on both sides of the shaft of the rotating electrical machine;
A vehicle comprising:

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