JP5791385B2 - Rotating electric machine - Google Patents

Description

  The present invention relates to a rotating electrical machine having a rotor in which a permanent magnet is incorporated, and more particularly to a rotor structure that can prevent magnetic flux leakage due to a permanent magnet.

  In a rotating electrical machine having a rotor in which a permanent magnet is incorporated, improvement of high output and low cost is always performed. High output means include high rotation and high torque, and low cost means include use of expensive permanent magnets. In general, it is difficult to achieve both high output and low cost, but it reduces the leakage magnetic flux of the permanent magnet by reducing the permeability of the bridge around the magnet mounting hole, and the strength against centrifugal force. Various techniques have been proposed to increase the torque or reduce the amount of permanent magnets used without impairing the performance.

  For example, in Patent Document 1, a general magnetic steel sheet is laminated to produce a rotor core, and the bridge portion around the magnet mounting hole is distorted by mechanical treatment or heat treatment to reduce the permeability of the bridge portion. A technique for reducing the leakage magnetic flux of a permanent magnet has been proposed.

  In Patent Document 2, a plate-shaped member of a composite magnetic material that has a single composition and can realize both magnetic properties of ferromagnetic and weak magnetism is processed in advance into a predetermined shape as a ferromagnetic material and laminated. After that, a technique has been proposed in which the bridge portion around the magnet mounting hole is heat-treated to form a weak magnetic portion to reduce the leakage magnetic flux of the permanent magnet.

Japanese Utility Model Publication No. 5-4742 JP 2010-220359 A

  In Patent Document 1, a general electromagnetic steel sheet is used as the material of the rotor core. However, mechanical treatment or heat treatment for reducing the permeability of the bridge portion around the magnet mounting hole is required, resulting in an increase in cost. It was. Further, although the permeability of the bridge portion is reduced, the flow of magnetic flux in the bridge portion cannot be completely eliminated, and the increase in output is not sufficient.

  In Patent Document 2, a special composite magnetic material is used as the material of the rotor core, and heat treatment is required to make the bridge portion around the magnet mounting hole a weak magnetic portion, resulting in an increase in cost. Furthermore, although the magnetic characteristics of the bridge portion are weak, the flow of magnetic flux in the bridge portion cannot be completely eliminated, and high output has not been sufficient.

  The present invention has been made in order to solve the above-mentioned problems, and has been devised to improve the structure of the rotor core so as to block the leakage path of magnetic flux generated by the permanent magnet, thereby realizing high output and low cost. The purpose is to obtain an electric machine.

The rotating electrical machine according to the present invention is produced by a rotor core held by a shaft and rotatably disposed, and a columnar body having a rectangular cross section, and the magnetizing direction is parallel to the short side direction of the rectangular cross section. A rotor having a plurality of permanent magnets that are magnetically oriented and incorporated in the rotor core, and a stator that is disposed so as to surround the rotor core. The rotor core includes a plurality of magnetic pole core bodies arranged annularly and spaced apart from each other in the circumferential direction, and the plurality of magnetic pole core bodies includes a first magnetic pole core body having a first polarity. The second magnetic pole core bodies having a second polarity different from the first polarity are alternately arranged in the circumferential direction in the same number. The rotor core has a first support member disposed on one axial side of the first magnetic pole core body and in contact with the first magnetic pole core body, and a first end member made of a magnetic material; A second end member made of a magnetic material having a second support portion disposed in contact with the second magnetic pole core body on one side in the axial direction of the second magnetic pole core body; A third end member made of a magnetic material having a third support portion disposed in contact with the first magnetic pole core body on the other axial side of the one magnetic pole core body, and the second magnetic pole core And a fourth end member made of a magnetic material and having a fourth support portion disposed in contact with the second magnetic pole core body on the other axial side of the core body. The plurality of permanent magnets are adjacent to the adjacent first magnetic pole core body and the first magnetic pole so that the long side direction of the rectangular cross-section is directed in the radial direction and the magnetization directions of the adjacent permanent magnets are opposite to each other . The rotor core is sandwiched between two magnetic pole core bodies and held by the rotor core. The rotor core includes the first magnetic pole core body and the second magnetic pole core body having different polarities from the plurality of magnetic pole core bodies. It is configured to be held by the shaft so as to be magnetically non-short-circuited with each other.

  According to the present invention, a plurality of permanent magnets are arranged between adjacent magnetic pole core bodies so that the long side direction of the rectangular section is directed in the radial direction and the magnetization directions of the adjacent permanent magnets are opposite to each other. The magnetic pole core bodies adjacent to each other in the circumferential direction are magnetized with different polarities. The magnetic pole core bodies having different polarities are magnetically non-short-circuited with each other. Therefore, the leakage path of the magnetic flux generated by the permanent magnet is blocked, the utilization efficiency of the magnetic flux generated by the permanent magnet is increased, and high output and low cost are realized.

It is a longitudinal cross-sectional view which shows the rotary electric machine which concerns on Embodiment 1 of this invention. It is a perspective view which shows the rotor of the rotary electric machine which concerns on Embodiment 1 of this invention. It is a disassembled perspective view explaining the structure of the rotor of the rotary electric machine which concerns on Embodiment 1 of this invention. It is an end view which shows the rotor of the rotary electric machine which concerns on Embodiment 1 of this invention. It is a VV arrow sectional view of Drawing 4. It is VI-VI arrow sectional drawing of FIG. It is VII-VII arrow sectional drawing of FIG. It is a longitudinal cross-sectional view which shows the rotor of the rotary electric machine which concerns on Embodiment 2 of this invention. It is a longitudinal cross-sectional view which shows the rotor of the rotary electric machine which concerns on Embodiment 2 of this invention. It is a longitudinal cross-sectional view which shows the rotor of the rotary electric machine which concerns on Embodiment 2 of this invention. It is a perspective view which shows the rotor of the rotary electric machine which concerns on Embodiment 3 of this invention. It is an end elevation which shows the rotor of the rotary electric machine which concerns on Embodiment 3 of this invention. It is XIII-XIII arrow sectional drawing of FIG. It is a longitudinal cross-sectional view which shows the rotor of the rotary electric machine which concerns on Embodiment 4 of this invention. It is a longitudinal cross-sectional view which shows the rotor of the rotary electric machine which concerns on Embodiment 5 of this invention. It is a perspective view which shows the rotor of the rotary electric machine which concerns on Embodiment 6 of this invention. It is a disassembled perspective view explaining the structure of the rotor of the rotary electric machine which concerns on Embodiment 6 of this invention. It is an end elevation which shows the rotor of the rotary electric machine which concerns on Embodiment 6 of this invention. It is XIX-XIX arrow sectional drawing of FIG. It is XX-XX arrow sectional drawing of FIG. It is a longitudinal cross-sectional view which shows the rotor of the rotary electric machine which concerns on Embodiment 7 of this invention. It is a longitudinal cross-sectional view which shows the rotor of the rotary electric machine which concerns on Embodiment 8 of this invention. It is a longitudinal cross-sectional view which shows the rotor of the rotary electric machine which concerns on Embodiment 9 of this invention.

  Hereinafter, preferred embodiments of a rotating electrical machine of the present invention will be described with reference to the drawings.

Embodiment 1 FIG.
1 is a longitudinal sectional view showing a rotating electrical machine according to Embodiment 1 of the present invention, FIG. 2 is a perspective view showing a rotor of the rotating electrical machine according to Embodiment 1 of the present invention, and FIG. 3 is an embodiment of the present invention. 4 is an exploded perspective view illustrating the configuration of the rotor of the rotating electrical machine according to FIG. 1, FIG. 4 is an end view showing the rotor of the rotating electrical machine according to Embodiment 1 of the present invention, and FIG. 5 is a cross-sectional view taken along line VV in FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 4, and FIG. 7 is a cross-sectional view taken along the line VII-VII in FIG. The longitudinal sectional view is a sectional view in a plane including the shaft center. In FIG. 1, only the upper side of the shaft center is shown. In FIG. 3, for the sake of convenience, only one permanent magnet and one mounting bolt are shown.

  In FIG. 1, a rotating electrical machine 1 is inserted into a pair of brackets 2, a cylindrical frame 3, a rotor core 8 in which a permanent magnet (not shown) is incorporated, and an axial center position of the rotor core 8. A rotor 7 having a shaft 9 to be fixed, an annular stator core 12, and a stator 11 having a stator coil 13 attached to the stator core 12 are provided.

The rotor 7 is rotatably disposed in the pair of brackets 2 with a shaft 9 supported by bearings 4 attached to the pair of brackets 2. The bearing 4 is fixed to the bracket 2 by fastening a bearing fixing screw 5 inserted from the outside into the bracket 2 to an end plate 6 disposed inside the bracket 2.
The frame 3 is sandwiched between the pair of brackets 2 from both sides in the axial direction and is held by the pair of brackets 2. The stator 11 is disposed so as to surround the rotor core 8 while the stator core 12 is held in the frame 3 in an internally fitted state.

  Next, the structure of the rotor 7 will be described with reference to FIGS.

  The rotor cores 8 are spaced apart from each other and arranged at equiangular pitches in the circumferential direction, and each of the four magnetic pole core bodies 20 constituting the magnetic poles, and the magnetic pole core bodies 20 fixed to the shaft 9 and having the same polarity. First to fourth end members 25A, 25B, 25C, and 25D that are sandwiched from both sides and supported integrally.

  The magnetic pole core body 20 is produced by laminating and integrating a predetermined number of electromagnetic steel sheets punched into a substantially arc shape. Here, the arc shape means a figure surrounded by two arcs having the same center and different radii and the two radii. The substantially arc shape is a shape obtained by translating a portion excluding the outer peripheral side of both sides formed by two radii of an arc shape by a predetermined distance inward in the circumferential direction. Therefore, magnet housing grooves 21 that are recessed in a step shape are formed on both side surfaces of the magnetic pole core body 20 in the circumferential direction, leaving the outer peripheral side. A portion extending in the circumferential direction from the outer peripheral side of the magnet housing groove 21 is a flange portion 22. Further, the bolt insertion hole 23 is formed so as to penetrate substantially the center of the magnetic pole core body 20 with the hole direction as the axial direction.

  The first end member 25A is made of a lump of magnetic material such as iron, and is formed at the center of the cylindrical first boss portion 26A into which the shaft 9 is press-fitted and the boss portion 26A on the outer peripheral surface of the first boss portion 26A. A pair of first support portions 27 </ b> A that extend radially outward from symmetrical positions and are disposed so as to be in contact with one end surface of the magnetic pole core body 20 in the axial direction. The first support portion 27A is formed in a substantially sectoral cross section in which a magnet housing groove 28 that is recessed in a step shape leaving the outer peripheral side and the inner peripheral side of both side surfaces in the circumferential direction is formed. And the site | part extended in the circumferential direction from the outer peripheral side and inner peripheral side of the magnet accommodation groove | channel 28 becomes flange part 29a, 29b. Further, the bolt insertion hole 30 is formed so as to penetrate substantially the center of the first support portion 27A with the hole direction as the axial direction. The thickness of the first boss portion 26A is thinner than half the thickness of the first support portion 27A, and the first boss portion 26A and the pair of first support portions 27A have a flush surface on one side in the thickness direction. It is integrated to become.

In the second end member 25B, the thickness of the second boss portion 26B is thinner than half of the thickness of the second support portion 27B, and the second boss portion 26B and the pair of second support portions 27B are other in the thickness direction. The first end member 25A is configured in the same manner as the first end member 25, except that the side surfaces are integrated so as to be flush with each other.
Then, the first end member 25A and the second end member 25B are shifted by 90 ° in the circumferential direction, and are coaxial so that the surfaces on both sides in the thickness direction of the first end member 25A and the second end member 25B are flush. When overlapped, the first end member 25A and the second end member 25B are in a non-contact state. That is, the first support portion 27A and the second support portion 27B are alternately arranged in the circumferential direction with a predetermined gap therebetween, and the first boss portion 26A and the second boss portion 26B are predetermined in the axial direction. The first support portion 27A and the second support portion 27B are arranged at the axial center positions opposite to each other while ensuring the above.

  The third end member 25C is formed in the same shape as the first end member 25A except that a female screw portion 31 is formed instead of the bolt insertion hole 30. The fourth end member 25 </ b> D is formed in the same shape as the second end member 25 </ b> B except that a female screw portion 31 is formed instead of the bolt insertion hole 30. Here, the 1st thru | or 4th boss | hub parts 26A-26D are 1st thru | or 4th connection parts. The female screw portion 31 and a mounting bolt 32 described later constitute fastening means. A shaft insertion hole 33 having a diameter slightly smaller than that of the shaft 9 is formed at the axial center of the first to fourth boss portions 26A to 26D.

  The shaft 9 is made of a nonmagnetic material such as stainless steel. The permanent magnet 10 is made into a columnar body having a rectangular cross section having a length equivalent to the axial length of the rotor core 8, and is magnetized and oriented with the magnetization direction as the short side direction (thickness direction) of the cross sectional rectangle. For the permanent magnet 10, a magnet material such as neodymium or ferrite is used.

  In order to assemble the rotor 7 configured as described above, first, the four magnetic pole core bodies 20 are arranged in an annular shape with the permanent magnets 10 positioned between the magnet housing grooves 21. At this time, the permanent magnet 10 is arrange | positioned in the circumferential direction so that the same polarity may face. The assembly of the four magnetic pole core bodies 20 and the permanent magnet 10 is connected by the magnetic force of the permanent magnet 10.

  Next, the second end member 25B and the fourth end member 25D are directed to the two magnetic pole core bodies 20 facing in the radial direction from both sides in the axial direction. Thus, the second support portion 27B and the fourth support portion 27D are in contact with both axial end surfaces of the magnetic pole core body 20, and the outer peripheral surfaces of the magnetic pole core body 20, the second support portion 27B, and the fourth support portion 27D are surfaces. The bolt insertion hole 30 of the second support part 27B, the bolt insertion hole 23 of the magnetic pole core body 20, and the female thread part 31 of the fourth support part 27D are coaxial. Further, the extending portions of the permanent magnet 10 extending from the magnet housing groove 21 to both sides in the axial direction are housed in the magnet housing grooves 28 of the second support portion 27B and the fourth support portion 27D.

  Next, the mounting bolt 32 is passed through the bolt insertion hole 30 of the second support portion 27B and the bolt insertion hole 23 of the magnetic pole core body 20, and is screwed to the female screw portion 31 of the fourth support portion 27D. Then, the mounting bolt 32 is fastened to the female screw portion 31, and the two magnetic pole core bodies 20, the second end member 25B, and the fourth end member 25D that are opposed to each other in the radial direction are fixed and integrated.

  Next, the first end member 25 </ b> A and the third end member 25 </ b> C are placed on the two magnetic pole core bodies 20 remaining from both sides in the axial direction. Accordingly, the first support portion 27A and the third support portion 27C are in contact with both axial end surfaces of the magnetic pole core body 20, and the outer peripheral surfaces of the magnetic pole core body 20, the first support portion 27A, and the third support portion 27C are surfaces. The bolt insertion hole 30 of the first support part 27A, the bolt insertion hole 23 of the magnetic pole core body 20, and the female thread part 31 of the third support part 27C are coaxial. Further, the extending portions of the permanent magnet 10 extending from the magnet housing groove 21 to both sides in the axial direction are housed in the magnet housing grooves 28 of the first support portion 27A and the third support portion 27C. Further, the first boss portion 26A and the second boss portion 26B are arranged coaxially with a predetermined gap in the axial direction, and the third boss portion 26C and the fourth boss portion 26D have a predetermined gap in the axial direction. Secured and arranged coaxially.

  Next, the mounting bolt 32 is passed through the bolt insertion hole 30 of the first support portion 27A and the bolt insertion hole 23 of the magnetic pole core body 20, and is screwed to the female screw portion 31 of the third support portion 27C. Then, the mounting bolt 32 is fastened to the female screw portion 31, and the two magnetic pole core bodies 20, the first end member 25A and the third end member 25C which are opposed to each other in the radial direction are fixed and integrated. Next, the shaft 9 is press-fitted into the shaft insertion hole 33 formed at the axial center position of the first to fourth boss portions 26A to 26D of the first to fourth end members 25A to 25D, and the rotor 7 is shown in FIG. As assembled.

  In the rotor 7 assembled in this way, the permanent magnets 10 are arranged in the circumferential direction with the long side of the rectangular section in the radial direction, and both side surfaces in the circumferential direction are in contact with the bottom surfaces of the magnet housing grooves 21 and 28. . The magnetic pole core body 20 sandwiched between the N poles of the permanent magnets 10 adjacent in the circumferential direction is magnetized to the N pole, and the magnetic pole core body 20 sandwiched between the S poles of the permanent magnets 10 adjacent in the circumferential direction. Is magnetized to the S pole. That is, as shown in FIG. 4, the two magnetic pole core bodies 20 integrated by the first and third end members 25A and 25C become the N-pole magnetic poles, and the second and fourth end members 25B and 25D The two integrated core bodies 20 for magnetic poles become the magnetic poles of the S pole. As a result, a four-pole rotor 7 in which four north and south poles are alternately arranged in the circumferential direction is obtained.

  In the rotor 7, as shown in FIGS. 5 to 7, the magnetic pole core bodies 20 are spaced apart from each other and arranged in the circumferential direction, and the first boss portion 26A and the second boss portion 26B are separated in the axial direction. The third boss portion 26C and the fourth boss portion 26D are spaced apart in the axial direction. Furthermore, the shaft 9 fitted into the shaft insertion hole 33 of the first to fourth boss portions 26A to 26D is made of a nonmagnetic material. Therefore, two magnetic pole core bodies 20 integrated by the first and third end members 25A and 25C and two magnetic pole core bodies 20 integrated by the second and fourth end members 25B and 25D are provided. In a magnetic non-short-circuit state.

  Therefore, the leakage path of the magnetic flux generated by the permanent magnet 10, that is, the path of the magnetic flux flowing from the magnetic pole core body 20 magnetized to the N pole to the magnetic pole core body 20 magnetized to the S pole is blocked. Thereby, the utilization efficiency of the magnetic flux generated by the permanent magnet 10 is increased, and the high output of the rotating electrical machine 1 is realized without increasing the amount of use of the permanent magnet 10. In addition, since the magnetic pole core body 20 is manufactured using an inexpensive electromagnetic steel sheet, the cost can be reduced.

Since the magnet housing grooves 21 and 28 in which the permanent magnet 10 is housed are recessed in the circumferential side surfaces of the magnetic pole core body 20 and the first to fourth support portions 27A to 27D, the permanent magnet 10 can be easily positioned. Thus, the assemblability of the rotor 7 is improved.
Since the permanent magnet 10 is preliminarily magnetized, the magnetic pole core body 20 and the permanent magnet 10 can be connected by the magnetic force of the permanent magnet 10, and the assemblability of the rotor 7 is improved.
Since the flange portions 22 and 29a project in the circumferential direction on the outer peripheral portions of the magnet housing grooves 21 and 28, the outward movement of the permanent magnet 10 in the radial direction is prevented by the flange portions 22 and 29a, and the anti-centrifugal force Sexuality is enhanced.

  Here, the effect of using the material of the first to fourth end members 25A to 25D as a magnetic material will be described.

  In the rotor core 8, four magnetic pole core bodies 20 are arranged in an annular shape, and first to fourth end members 25A to 25D are arranged at both ends in the axial direction of the group of magnetic pole core bodies 20, and are fastened integrally. It is structured. The permanent magnet 10 extends from one end to the other end of the rotor core 8 in the axial direction, and both side surfaces in the circumferential direction are the bottom surface of the magnet housing groove 21 of the magnetic pole core body 20 and the first to fourth. It contacts the bottom surface of the magnet housing groove 28 of the support portions 27A to 27D.

Therefore, when the first to fourth end members 25A to 25D are made of a magnetic material, the magnetic flux generated at the portion of the permanent magnet 10 extending from the magnetic pole core body 20 to both sides in the axial direction is the first to fourth. Since it flows through the end members 25 </ b> A to 25 </ b> D and contributes to the high output of the rotating electrical machine 1, the utilization efficiency of the magnetic flux generated by the permanent magnet 10 is increased.
On the other hand, when the first to fourth end members 25A to 25D are made of a non-magnetic material, the magnetic flux generated at the part of the permanent magnet 10 extending from the magnetic pole core body 20 to both sides in the axial direction is not used. The utilization efficiency of the magnetic flux generated by the permanent magnet 10 is reduced.

  Thus, if the axial length of the rotor core 8 is the same, the use efficiency of the magnetic flux generated by the permanent magnet 10 can be increased by using the material of the first to fourth end members 25A to 25D as a magnetic material, and the rotating electrical machine 1 can be increased in output. If the output of the rotating electrical machine 1 is the same, the axial length of the rotor core 8 can be shortened by using the material of the first to fourth end members 25A to 25D as a magnetic material, and the rotating electrical machine 1 can be downsized. Figured.

  The length of the permanent magnet 10 is not necessarily the same as the axial length of the rotor core 8. The permanent magnet 10 extends from between the magnetic pole core bodies 20, and the circumferential side surface of the extending portion of the permanent magnet 10 is the same. If the first to fourth support portions 27A to 27D are in contact with the bottom surfaces of the magnet housing grooves 28, the effect of using the material of the first to fourth end members 25A to 25D as a magnetic material can be obtained.

In the first embodiment, the pre-magnetized permanent magnet 10 is assembled to the rotor 7. However, after the magnet material that has not been magnetized is assembled to the rotor 7, the magnet material is magnetized. Also good.
In the first embodiment, the third and fourth support portions 27C and 27D are formed with the internal thread portion 31, but the internal thread portion is a through hole, the mounting bolt is extended from the through hole, and the nut is attached. You may make it fasten to the extension part of a volt | bolt.

Embodiment 2. FIG.
8 to 10 are longitudinal sectional views each showing a rotor of a rotary electric machine according to Embodiment 2 of the present invention. 8 to 10 are cross-sectional views corresponding to FIGS. 5 to 7 of the rotor.

  8 to 10, the magnetic pole core body 20 </ b> A is the same as the magnetic pole core body 20 except that the radius of the arc on the inner diameter side having a substantially arc-shaped cross section is slightly smaller than the radius of the shaft 9. It is configured. In the first to fourth end members 35A to 35D, the shaft insertion hole 33 formed at the axial center position of the first to fourth boss portions 36A to 36D as the first to fourth connecting portions has a larger diameter than the shaft 9. Except for the point formed, it is comprised similarly to the 1st thru | or 4th end member 25A-25D.

  Here, in order to assemble the rotor 7A, first, the four magnetic pole core bodies 20A are annularly arranged with the permanent magnets 10 positioned between the magnet housing grooves 21. Next, the two magnetic pole core bodies 20A opposed in the radial direction are sandwiched between the first and third end members 35A and 35C and fixed by the mounting bolts 32, and the remaining two magnetic pole core bodies 20A are fixed to the second and second magnetic pole core bodies 20A. It is clamped and fixed by the mounting bolt 32 while being sandwiched between the fourth end members 35B and 35D. Further, the shaft 9 is press-fitted into the axial center position of the four magnetic pole core bodies 20A arranged in an annular shape. Thus, the four magnetic pole core bodies 20A and the first to fourth end members 35A to 35D are integrated, and the rotor 7A is assembled.

  In the rotor 7A thus assembled, the magnetic pole core bodies 20A are spaced apart from each other in the circumferential direction, the first boss portion 36A and the second boss portion 36B are separated in the axial direction, and the third boss portion 36C. And the fourth boss portion 36D are spaced apart in the axial direction. Furthermore, the shaft 9 fitted in the axial center position of the four magnetic pole core bodies 20A arranged in an annular shape is made of a nonmagnetic material. Therefore, two magnetic pole core bodies 20A integrated by the first and third end members 35A, 35C and two magnetic pole core bodies 20A integrated by the second and fourth end members 35B, 35D are provided. In a magnetic non-short-circuit state.

  Therefore, also in the second embodiment, the leakage path of the magnetic flux generated by the permanent magnet 10 is blocked, and high output and low cost of the rotating electrical machine are realized.

  In the second embodiment, each pair of the first to fourth support portions 27A to 27D is connected by being positioned at the axial center positions on both sides in the axial direction of the magnetic pole core body 20A arranged in an annular shape. The first to fourth connecting portions only need to be able to connect the pairs of the first to fourth support portions 27A to 27D, and are positioned at the axial center positions on both sides in the axial direction of the magnetic pole core bodies 20A arranged in an annular shape. There is no need.

  In the second embodiment, the magnetic pole core body 20 in the first embodiment is replaced with the magnetic pole core body 20A, and the shaft 9 is press-fitted into a group of the magnetic pole core bodies 20A arranged in an annular shape so that the rotor core is Although integrated, the magnetic pole core body 20 in Embodiments 3 to 9 to be described later is replaced with the magnetic pole core body 20A, and the shaft 9 is press-fitted into a group of magnetic pole core bodies 20A arranged in an annular shape, so that the rotor core is It may be integrated.

Embodiment 3 FIG.
11 is a perspective view showing a rotor of a rotating electrical machine according to Embodiment 3 of the present invention, FIG. 12 is an end view showing the rotor of the rotating electrical machine according to Embodiment 3 of the present invention, and FIG. 13 is XIII- of FIG. It is XIII arrow sectional drawing.

11 to 12, the first to fourth end members 37 </ b> A to 37 </ b> D have the first to fourth support portions 38 </ b> A to 38 </ b> D formed thick, and the outer side in the axial direction of the magnet housing groove 28 is caused by the flange portion 29 c. Except for the closed point, it is configured in the same manner as the first to fourth end members 25A to 25D.
The third embodiment is configured in the same manner as in the first embodiment except that the first to fourth end members 37A to 37D are used.

In the rotor 7B configured as described above, the two magnetic pole core bodies 20 integrated by the first and third end members 37A and 37C and the two integrated by the second and fourth end members 37B and 37D. The two magnetic pole core bodies 20 are magnetically non-short-circuited.
Therefore, also in the third embodiment, the leakage path of the magnetic flux generated by the permanent magnet 10 is blocked, and high output and low cost of the rotating electrical machine are realized.

According to the third embodiment, since the outer side of the magnet housing groove 28 in the axial direction is closed by the flange portion 29c, the permanent magnet 10 has a lengthwise end surface in contact with the flange portion 29c. Is housed in the magnet housing groove 28, whereby the permanent magnet 10 can be positioned in the axial direction.
Therefore, prior to the press-fitting of the shaft 9, the four magnetic pole core bodies 20 can be positioned in the axial direction with reference to the axial end surface of the permanent magnet 10, and assemblability is improved.

Embodiment 4 FIG.
14 is a longitudinal sectional view showing a rotor of a rotary electric machine according to Embodiment 4 of the present invention.

In FIG. 14, the clearance securing member 39 is made of a nonmagnetic member such as stainless steel, and is between the first boss portion 26A and the second boss portion 26B, and between the third boss portion 26C and the fourth boss portion 26D. Is intervened.
The other configuration of the fourth embodiment is the same as that of the first embodiment.

In the thus configured rotor 7C, the two magnetic pole core bodies 20 integrated by the first and third end members 25A, 25C and the two integrated by the second and fourth end members 25B, 25D. The two magnetic pole core bodies 20 are magnetically non-short-circuited.
Therefore, also in the fourth embodiment, the leakage path of the magnetic flux generated by the permanent magnet 10 is cut off, and high output and low cost of the rotating electrical machine are realized.

  According to the fourth embodiment, the clearance securing member 39 is provided between the first boss portion 26A and the second boss portion 26B and between the third boss portion 26C and the fourth boss portion prior to the press-fitting step of the shaft 9. 26D. Therefore, prior to the press-fitting of the shaft 9, the four magnetic pole core bodies 20 can be positioned in the axial direction with reference to the axial end face of the clearance securing member 39, and assemblability is improved.

Embodiment 5 FIG.
15 is a longitudinal sectional view showing a rotor of a rotary electric machine according to Embodiment 5 of the present invention.

In FIG. 14, the auxiliary magnet 40 is produced in a ring shape using a magnet material such as neodymium or ferrite, and is magnetized and oriented with the magnetization direction as the thickness direction. The auxiliary magnet 40 is opposed to the first boss portion 26A and the second boss portion 26B and between the third boss portion 26C and the fourth boss portion 26D with the magnetization direction as the axial direction. The first to fourth boss portions 26A to 26D are interposed so as to have different polarities.
The other configuration of the fifth embodiment is the same as that of the first embodiment.

In the rotor 7D configured as described above, the two magnetic pole core bodies 20 integrated by the first and third end members 25A and 25C and the two integrated by the second and fourth end members 25B and 25D. The two magnetic pole core bodies 20 are magnetically non-short-circuited.
Therefore, also in the fifth embodiment, the leakage path of the magnetic flux generated by the permanent magnet 10 is blocked, and high output and low cost of the rotating electrical machine are realized.

  According to the fifth embodiment, prior to the press-fitting process of the shaft 9, the auxiliary magnet 40 is provided between the first boss portion 26A and the second boss portion 26B, and between the third boss portion 26C and the fourth boss portion 26D. It is inserted between. Therefore, prior to the press-fitting of the shaft 9, it is possible to position the four magnetic pole core bodies 20 in the axial direction with reference to the axial end surface of the auxiliary magnet 40, thereby improving the assemblability. Further, since the magnetic flux of the auxiliary magnet 40 is added to the magnetic flux generated by the permanent magnet 10, it is possible to realize high torque and high output of the rotating electrical machine, and to reduce the size of the rotating electrical machine.

Embodiment 6 FIG.
16 is a perspective view showing a rotor of a rotating electrical machine according to Embodiment 6 of the present invention, FIG. 17 is an exploded perspective view for explaining the configuration of the rotor of the rotating electrical machine according to Embodiment 6 of the present invention, and FIG. FIG. 19 is a cross-sectional view taken along arrow XIX-XIX in FIG. 18, and FIG. 20 is a cross-sectional view taken along arrow XX-XX in FIG. In FIG. 17, for the sake of convenience, the permanent magnet and the mounting bolt are partially omitted.

  16 to 20, the fifth end member 42A is made of a lump of a magnetic material such as iron, and is disposed in contact with one end face in the axial direction of the two magnetic pole core bodies 20 opposed in the radial direction. The pair of fifth support portions 43A and the pair of fifth support portions 43A in the circumferential direction are thinner than the fifth support portion 43A and are flush with one axial end surface of the fifth support portion 43A. A pair of seventh support portions 43C, which are formed so as to be connected and are spaced apart from one axial end surface of the two remaining magnetic pole core bodies 20 facing in the radial direction, and a fifth support portion 43A It has a fifth boss portion 44A as a fifth connecting portion that connects the fifth supporting portion 43A and the seventh supporting portion 43C on the inner diameter side with respect to the seventh supporting portion 43C. Further, the bolt insertion hole 30 is formed so as to pass through substantially the center of the fifth support portion 43A and the seventh support portion 43C, and the shaft insertion hole 33 is formed so as to pass through the axial center position of the fifth boss portion 44A. Has been. Further, the magnet housing groove 28 is recessed to a predetermined length on both side surfaces in the circumferential direction of the fifth support portion 43A from the other end in the axial direction to one end side.

  The sixth end member 42B is made of a lump of magnetic material such as iron, and a pair of sixth support portions 43B disposed in contact with the other end surfaces in the axial direction of the two magnetic pole core bodies 20 facing in the radial direction. And is formed so as to connect the pair of sixth support portions 43B in the circumferential direction so as to be flush with the other end surface in the axial direction of the sixth support portion 43B. A pair of eighth support portions 43D, a sixth support portion 43B, and an eighth support portion 43D that are spaced apart from the other axial end surfaces of the two remaining magnetic pole core bodies 20 facing in the radial direction. A sixth boss portion 44B as a sixth connecting portion for connecting the sixth supporting portion 43B and the eighth supporting portion 43D on the inner diameter side; Further, the bolt insertion hole 30 is formed so as to pass through the substantially central part of the sixth support part 43B and the eighth support part 43D, and the shaft insertion hole 33 is formed so as to pass through the axial center position of the sixth boss part 44B. Has been. Furthermore, the magnet accommodation groove | channel 28 is recessedly provided in the circumferential direction both sides | surfaces of the 6th support part 43B by predetermined length from the axial direction one end to the other end side.

Next, a method for assembling the rotor 7E will be described.
First, the four magnetic core bodies 20 are annularly arranged with the permanent magnets 10 positioned between the magnet housing grooves 21. At this time, the permanent magnet 10 is arrange | positioned in the circumferential direction so that the same polarity may face. The assembly of the four magnetic pole core bodies 20 and the permanent magnet 10 is connected by the magnetic force of the permanent magnet 10.

  Next, the fifth end member 42A and the sixth end member 42B are directed to the four magnetic pole core bodies 20 that are annularly arranged from both sides in the axial direction. As a result, the fifth support portion 43A is in contact with one axial end surface of the two magnetic pole core bodies 20 facing in the radial direction and the eighth support portion 43D is the axis of the two magnetic pole core bodies 20 facing in the radial direction. It arrange | positions away with respect to the other end surface of a direction. Further, the sixth support portion 43B is in contact with the other axial end surfaces of the two remaining magnetic pole core bodies 20 facing in the radial direction, and the seventh support portion 43C of the remaining two magnetic pole core bodies 20 facing in the radial direction. It arrange | positions spaced apart with respect to the end surface of an axial direction.

  The bolt insertion hole 30 of the fifth support portion 43A and the bolt insertion hole 23 of the magnetic pole core body 20 are coaxial. Further, the bolt insertion hole 30 of the sixth support portion 43B and the bolt insertion hole 23 of the magnetic pole core body 20 are coaxial. Furthermore, the extending part of the permanent magnet 10 extending from the magnet housing groove 21 to both sides in the axial direction is housed in the magnet housing groove 28 of the fifth support part 43A and the sixth support part 43B.

  Next, the mounting bolt 32 is passed through the bolt insertion hole 30 of the fifth support portion 43A and the bolt insertion hole 23 of the magnetic pole core body 20, and the nut 34 is screwed to the extended portion. Then, the mounting bolt 32 is fastened to the nut 34, and the two magnetic pole core bodies 20 and the fifth end member 42A facing in the radial direction are fixed and integrated.

  Next, the mounting bolt 32 is passed through the bolt insertion hole 30 of the second support portion 43B and the bolt insertion hole 23 of the magnetic pole core body 20, and the nut 34 is screwed to the extension portion. Then, the mounting bolt 32 is fastened to the nut 34, and the two magnetic pole core bodies 20 and the sixth end member 42B facing each other in the radial direction are fixed and integrated. Next, the shaft 9 is press-fitted into the shaft insertion hole 33 formed at the axial center position of the fifth and sixth boss portions 44A and 44B of the fifth and sixth end members 42A and 42B, and the rotor 7E is shown in FIG. As assembled. The side surface of the permanent magnet 10 in the circumferential direction is in contact with the bottom surfaces of the magnet housing grooves 21 and 28.

In the rotor 7E assembled in this way, the two magnetic pole core bodies 20 integrated by the fifth end member 42A and the two magnetic pole core bodies 20 integrated by the sixth end member 42B are magnetically coupled. Therefore, it is not short-circuited.
Therefore, also in the sixth embodiment, the leakage path of the magnetic flux generated by the permanent magnet 10 is cut off, and the output of the rotating electrical machine 1 and the cost can be reduced.
According to the sixth embodiment, the same polarity magnetic pole core body 20 is integrated using the fifth and sixth end members 42A and 42B, so the number of parts is reduced and the assemblability of the rotor 7E is improved. The

In the sixth embodiment, the mounting bolt 32 and the nut 34 serve as fastening means. In the sixth embodiment, since the magnetic pole core body and the end member having the same polarity are fastened by the fastening means, the fastening means need not be nonmagnetic.
In the sixth embodiment, the fifth end member 42A and the sixth end member 42B have the seventh support portion 43C and the eighth support portion 43D, but the seventh support portion 43C and the eighth support portion 43D. May be omitted.

Embodiment 7 FIG.
FIG. 21 is a longitudinal sectional view showing a rotor of a rotary electric machine according to Embodiment 7 of the present invention.

  In FIG. 21, the fifth end member 45A and the sixth end member 45B are the same as the fifth and sixth end members 42A and 42B, except that a female thread portion 31 is formed in place of the bolt insertion hole 30. It is configured. A gap ensuring member 46 made of a nonmagnetic material such as stainless steel is interposed between the seventh support portion 43C and the magnetic pole core body 20, and between the eighth support portion 43D and the magnetic pole core body 20. ing.

The mounting bolt 32 is inserted into the bolt insertion hole 30 of the fifth support portion 43A, the bolt insertion hole 23 of the magnetic pole core body 20, and the clearance securing member 46, and is fastened to the female thread portion 31 of the eighth support portion 43D. The two magnetic pole core bodies 20, the fifth end member 45A and the sixth end member 45B which are opposed to each other in the radial direction are fixed and integrated. Then, the mounting bolt 32 is inserted through the bolt insertion hole 30 of the sixth support portion 43B, the bolt insertion hole 23 of the magnetic pole core body 20, and the clearance securing member 46, and is fastened to the female thread portion 31 of the seventh support portion 43C. The remaining two magnetic pole core bodies 20, the fifth end member 45A, and the sixth end member 45B, which are opposed to each other in the radial direction, are fixed and integrated.
Other configurations are the same as those in the sixth embodiment.

In the rotor 7F configured as described above, the two magnetic pole core bodies 20 opposed in the radial direction and the remaining two magnetic pole core bodies 20 opposed in the radial direction are magnetically non-short-circuited. .
Therefore, also in the seventh embodiment, the leakage path of the magnetic flux generated by the permanent magnet 10 is blocked, and the output of the rotating electrical machine and the cost can be reduced. Further, since the magnetic pole core body 20 is integrated using the fifth and sixth end members 45A and 45B, the number of parts is reduced, and the assemblability of the rotor 7E is improved.
According to the seventh embodiment, since the thickness of the fifth and sixth support portions 43A and 43B can be increased, the rigidity of the rotor 7F is increased and the centrifugal force resistance is improved. Further, the nut 34 is not necessary, the number of parts is reduced, and the assembly workability is improved.

Embodiment 8 FIG.
FIG. 22 is a longitudinal sectional view showing a rotor of a rotary electric machine according to Embodiment 8 of the present invention.

  In FIG. 22, the auxiliary magnet 47 made of a magnet material such as neodymium or ferrite is between the seventh support portion 43C and the magnetic pole core body 20, and between the eighth support portion 43D and the magnetic pole core body 20. The magnetic pole core body 20, the seventh support portion 43C, and the eighth support portion 43D have different polarities from each other with the magnetization direction as the axial direction.

The mounting bolt 32 is inserted into the bolt insertion hole 30 of the fifth support portion 43A, the bolt insertion hole 23 of the magnetic pole core body 20, and the auxiliary magnet 47, and is fastened to the female thread portion 31 of the eighth support portion 43D. The two magnetic pole core bodies 20, the fifth end member 45A and the sixth end member 45B which are opposed to each other in the radial direction are fixed and integrated. Furthermore, the mounting bolt 32 is inserted into the bolt insertion hole 30 of the sixth support portion 43B, the bolt insertion hole 23 of the magnetic pole core body 20, and the auxiliary magnet 47, and is fastened to the female thread portion 31 of the seventh support portion 43C. The remaining two magnetic pole core bodies 20 facing in the radial direction, the fifth end member 45A and the sixth end member 45B are fixed and integrated.
Other configurations are the same as those in the seventh embodiment.

In the rotor 7G configured as described above, the two magnetic pole core bodies 20 opposed in the radial direction and the remaining two magnetic pole core bodies 20 opposed in the radial direction are magnetically non-short-circuited. .
Therefore, also in the eighth embodiment, the leakage path of the magnetic flux generated by the permanent magnet 10 is blocked, and the output of the rotating electrical machine and the cost can be reduced. Further, since the magnetic pole core body 20 is integrated using the fifth and sixth end members 45A and 45B, the number of parts is reduced, and the assemblability of the rotor 7E is improved. Since the thickness of the fifth and sixth support portions 43A and 43B can be increased, the rigidity of the rotor 7G is increased and the centrifugal force resistance is improved. Further, the nut 34 is not necessary, the number of parts is reduced, and the assembly workability is improved.

  According to the eighth embodiment, since the magnetic flux of the auxiliary magnet 47 is added to the magnetic flux generated by the permanent magnet 10, it is possible to increase the torque and output of the rotating electrical machine and to reduce the size of the rotating electrical machine. Become.

Embodiment 9 FIG.
FIG. 23 is a longitudinal sectional view showing a rotor of a rotary electric machine according to Embodiment 9 of the present invention.

  In FIG. 23, the first end member 50 and the second end member 51 are disposed at both ends in the axial direction of the four magnetic pole core bodies 20 that are annularly arranged with the permanent magnet 10 positioned between the magnet housing grooves 21. Has been. The first end member 50 is made of a non-magnetic material such as stainless steel into a disc having a predetermined thickness, the four bolt insertion holes 30 are formed at an equiangular pitch on the same circumference, and the shaft insertion holes 33 are axially positioned. Is formed. The second end member 51 is made of a non-magnetic material such as stainless steel into a disc having a predetermined thickness, the four female screw portions 31 are formed at an equiangular pitch on the same circumference, and the shaft insertion hole 33 is located at the axial center position. Is formed.

The mounting bolt 32 is passed through the bolt insertion hole 30 of the first end member 50 and the bolt insertion hole 23 of the magnetic pole core body 20, and is fastened to the female thread portion 31 of the second end member 51. The two magnetic pole core bodies 20, the first end member 50, and the second end member 52 are fixed and integrated. The shaft 9 is press-fitted into the shaft insertion holes 33 of the first end member 50 and the second end member 51, and the rotor 7H is assembled.
Other configurations are the same as those in the first embodiment.

In the rotor 7H configured as described above, the two magnetic pole core bodies 20 opposed in the radial direction and the remaining two magnetic pole core bodies 20 opposed in the radial direction are magnetically non-short-circuited. .
Therefore, also in the ninth embodiment, the leakage path of the magnetic flux generated by the permanent magnet 10 is blocked, and the output of the rotating electrical machine and the cost can be reduced.

In each of the above embodiments, a rotating electrical machine having a four-pole rotor is described, but the number of poles of the rotor is not limited to four, and may be eight, for example.
In each of the above embodiments, magnetic steel sheets are laminated to produce a magnetic pole core body. However, the magnetic pole core body is not limited to a laminated body of electromagnetic steel sheets, and is made of, for example, a dust core. Also good.
In each of the above embodiments, the end member uses a lump of magnetic material such as iron. However, the end member is not limited to a lump of magnetic material. For example, the end member is formed by stacking electromagnetic steel plates. Also good.

  The rotating electrical machine according to the present invention can achieve high output and low cost, and can be applied to a motor for an electric vehicle, a drive motor for a machine tool spindle, and the like.

  1 Rotating electrical machine, 7, 7A, 7B, 7C, 7D, 7E, 7F, 7G, 7H Rotor, 8 Rotor core, 9 Shaft, 10 Permanent magnet, 20, 20A Magnetic pole core body, 21 Magnet housing groove, 25A First end Member, 25B second end member, 25C third end member, 25D fourth end member, 26A first boss part (first connection part), 26B second boss part (second connection part), 26C third boss part ( 3rd connection part), 26D 4th boss | hub part (4th connection part), 27A 1st support part, 27B 2nd support part, 27C 3rd support part, 27D 4th support part, 31 Female thread part (fastening means) , 32 mounting bolt (fastening means), 33 shaft insertion hole, 34 nut (fastening means), 35A first end member, 35B second end member, 35C third end member, 35D fourth end member, 36A first Boss part (first connecting part), 3 B 2nd boss | hub part (2nd connection part), 36C 3rd boss | hub part (3rd connection part), 36D 4th boss | hub part (4th connection part), 37A 1st end member, 37B 2nd end member, 37C 2nd 3 end member, 37D 4th end member, 38A 1st support part, 38B 2nd support part, 38C 3rd support part, 38D 4th support part, 39 clearance gap securing member, 40 auxiliary magnet, 42A 5th end member, 42B 2nd end member, 43A 5th support part, 43B 6th support part, 43C 7th support part, 43D 8th support part, 44A 5th boss part (5th connection part), 44B 6th boss part (6th connection) Part), 45A fifth end member, 45B sixth end member, 46 gap ensuring member, 47 auxiliary magnet.

Claims (15)

A rotor core that is held on a shaft and is rotatably arranged, and is manufactured in a columnar body having a rectangular cross section, and is magnetized and oriented so that the magnetization direction is parallel to the short side direction of the rectangular cross section. A rotor having a plurality of permanent magnets incorporated in
In a rotating electric machine comprising a stator disposed so as to surround the rotor core,
The rotor core has a plurality of magnetic pole core bodies arranged in an annular shape spaced apart from each other in the circumferential direction,
In the plurality of magnetic pole core bodies, the same number of first magnetic pole core bodies having a first polarity and second magnetic pole core bodies having a second polarity different from the first polarity are alternately arranged in the circumferential direction. Configured,
The rotor core is
A first end member made of a magnetic material having a first support portion disposed in contact with the first magnetic pole core body on one side in the axial direction of the first magnetic pole core body;
A second end member made of a magnetic material, having a second support portion disposed in contact with the second magnetic pole core body on one side in the axial direction of the second magnetic pole core body;
A third end member made of a magnetic material, having a third support portion disposed in contact with the first magnetic pole core body on the other axial side of the first magnetic pole core body;
A fourth end member made of a magnetic material and having a fourth support portion disposed in contact with the second magnetic pole core body on the other axial side of the second magnetic pole core body,
The plurality of permanent magnets are adjacent to the adjacent first magnetic pole core body and the first magnetic pole so that the long side direction of the rectangular cross-section is directed in the radial direction and the magnetization directions of the adjacent permanent magnets are opposite to each other. Sandwiched between two magnetic core bodies and held by the rotor core,
The rotor core is configured to be held by the shaft such that the first magnetic pole core body and the second magnetic pole core body having different polarities of the plurality of magnetic pole core bodies are magnetically non-short-circuited with each other. Rotating electric machine characterized by being made. The first end member is made of a magnetic material, and has a first connection part that connects and integrates the first support part.
The second end member is made of a magnetic material, and has a second connection part that connects and integrates the second support part,
The third end member is made of a magnetic material, and has a third connection part that connects and integrates the third support part.
The fourth end member is made of a magnetic material, and has a fourth connection part that connects and integrates the fourth support part,
The first magnetic pole core bodies, the first support portions, and the third support portions, which are arranged in the axial direction, are fastened and fixed to integrate the first magnetic pole core bodies, and Fastening means for fastening and fixing the second magnetic pole core bodies arranged in the direction, the second support portion, and the fourth support portion to integrate the group of the second magnetic pole core bodies. The rotating electrical machine according to claim 1, wherein:   The permanent magnet is disposed so as to extend on both sides in the axial direction from between the adjacent first magnetic pole core body and the second magnetic pole core body, and adjacent to the first magnetic pole core body and the adjacent Both side surfaces in the circumferential direction of the extending portion of the permanent magnet extending from the space between the second magnetic pole core body to one side in the axial direction are in contact with the first support portion and the second support portion, and the adjacent second Both side surfaces in the circumferential direction of the extending portion of the permanent magnet extending from the space between the one magnetic pole core body and the second magnetic pole core body to the other side in the axial direction are the third support portion and the fourth support portion. The rotating electrical machine according to claim 1, wherein the rotating electrical machine is in contact with the rotating electrical machine. The shaft is made of a non-magnetic material,
The first connecting portion and the second connecting portion are spaced apart from each other in the axial direction at an axial center position on one side in the axial direction of the first magnetic pole core body and the second magnetic pole core body arranged in the circumferential direction. And are arranged to be placed relative to each other,
The third connecting portion and the fourth connecting portion are spaced apart from each other in the axial direction at an axial center position on the other axial side of the first magnetic pole core body and the second magnetic pole core body arranged in the circumferential direction. And are arranged to be placed relative to each other,
The rotor core is held by the first connecting portion, the second connecting portion, the third connecting portion, and the fourth connecting portion, which are fixed to the shaft inserted through the axial center position of the rotor core. The rotating electrical machine according to claim 2 or claim 3, wherein   A non-magnetic gap securing member is interposed between the first connecting portion and the second connecting portion, and between the third connecting portion and the fourth connecting portion, respectively. The rotating electrical machine according to claim 4.   Auxiliary magnets have a magnetizing direction as an axial direction and are opposed to each other between the first connecting portion and the second connecting portion and between the third connecting portion and the fourth connecting portion. 5. The rotating electrical machine according to claim 4, wherein the rotating electrical machine is interposed so as to have a polarity different from that of the first connecting portion, the second connecting portion, the third connecting portion, and the fourth connecting portion. . A rotor core that is held on a shaft and is rotatably arranged, and is manufactured in a columnar body having a rectangular cross section, and is magnetized and oriented so that the magnetization direction is parallel to the short side direction of the rectangular cross section. A rotor having a plurality of permanent magnets incorporated in
In a rotating electric machine comprising a stator disposed so as to surround the rotor core,
The rotor core has a plurality of magnetic pole core bodies arranged in an annular shape spaced apart from each other in the circumferential direction,
In the plurality of magnetic pole core bodies, the same number of first magnetic pole core bodies having a first polarity and second magnetic pole core bodies having a second polarity different from the first polarity are alternately arranged in the circumferential direction. Configured,
The rotor core is
A magnetic material having a fifth support portion disposed in contact with the first magnetic pole core body on one side in the axial direction of the first magnetic pole core body and spaced apart from the second magnetic pole core body. A fifth end member made in
A magnetic material having a sixth support portion disposed in contact with the second magnetic pole core body on the other side in the axial direction of the second magnetic pole core body and spaced apart from the first magnetic pole core body. A sixth end member made in
The plurality of permanent magnets are adjacent to the adjacent first magnetic pole core body and the first magnetic pole so that the long side direction of the rectangular cross-section is directed in the radial direction and the magnetization directions of the adjacent permanent magnets are opposite to each other. Sandwiched between two magnetic core bodies and held by the rotor core,
The rotor core is configured to be held by the shaft such that the first magnetic pole core body and the second magnetic pole core body having different polarities of the plurality of magnetic pole core bodies are magnetically non-short-circuited with each other. Rotating electric machine characterized by being made. The fifth end member is made of a magnetic material, and has a fifth connection portion that connects and integrates the fifth support portion,
The sixth end member is made of a magnetic material, and has a sixth connection part that connects and integrates the sixth support part,
The first magnetic pole core bodies arranged in the axial direction and the fifth support portion are fastened and fixed to integrate the first magnetic pole core bodies, and the first magnetic pole core bodies arranged in the axial direction respectively. 8. The fastening device according to claim 7, further comprising fastening means for fastening and fixing the two-pole core body and the sixth support portion so as to integrate the group of the second magnetic pole core bodies. Rotating electric machine. A rotor core that is held on a shaft and is rotatably arranged, and is manufactured in a columnar body having a rectangular cross section, and is magnetized and oriented so that the magnetization direction is parallel to the short side direction of the rectangular cross section. A rotor having a plurality of permanent magnets incorporated in
In a rotating electric machine comprising a stator disposed so as to surround the rotor core,
The rotor core has a plurality of magnetic pole core bodies arranged in an annular shape spaced apart from each other in the circumferential direction,
In the plurality of magnetic pole core bodies, the same number of first magnetic pole core bodies having a first polarity and second magnetic pole core bodies having a second polarity different from the first polarity are alternately arranged in the circumferential direction. Configured,
The rotor core is
A fifth support portion arranged in contact with the first magnetic pole core body on one side in the axial direction of the first magnetic pole core body, and a second support member on the axial direction one side of the second magnetic pole core body. A fifth end member made of a magnetic material, having a seventh support portion disposed apart from the magnetic pole core body;
A sixth support portion disposed in contact with the second magnetic pole core body on the other axial side of the second magnetic pole core body, and the first magnetic pole core body on the other axial side of the first magnetic pole core body. A sixth end member made of a magnetic material and having an eighth support portion disposed apart from the magnetic pole core body;
A nonmagnetic gap securing member interposed between the seventh support portion and the second magnetic pole core body and between the eighth support portion and the first magnetic pole core body, respectively. A rotating electrical machine characterized by comprising: The fifth end member is made of a magnetic material, and has a fifth connection portion that connects and integrates the fifth support portion and the seventh support portion,
The sixth end member is made of a magnetic material, and has a sixth connection part that connects and integrates the sixth support part and the eighth support part,
The group of the first magnetic pole core bodies is integrated by fastening and fixing the fifth support section, the first magnetic pole core body, the gap securing member, and the eighth support section that are arranged in the axial direction. In addition, the seventh support portion, the gap securing member, the second magnetic pole core body, and the sixth support portion, which are arranged in the axial direction, are fastened and fixed, and the second magnetic pole core body group. 10. The rotating electrical machine according to claim 9, further comprising nonmagnetic fastening means for integrating the two. A rotor core that is held by a shaft and is rotatably arranged, and is manufactured in a columnar body having a rectangular cross section, and is magnetized and oriented so that the magnetization direction is parallel to the short side direction of the rectangular cross section. A rotor having a plurality of permanent magnets incorporated in
A rotating electrical machine including a stator disposed so as to surround the rotor core, wherein the rotor core includes a plurality of magnetic pole core bodies arranged annularly and spaced apart from each other in the circumferential direction;
In the plurality of magnetic pole core bodies, the same number of first magnetic pole core bodies having a first polarity and second magnetic pole core bodies having a second polarity different from the first polarity are alternately arranged in the circumferential direction. Configured,
The rotor core is
A fifth support portion arranged in contact with the first magnetic pole core body on one side in the axial direction of the first magnetic pole core body, and a second support member on the axial direction one side of the second magnetic pole core body. A fifth end member made of a magnetic material, having a seventh support portion disposed apart from the magnetic pole core body;
A sixth support portion disposed in contact with the second magnetic pole core body on the other axial side of the second magnetic pole core body, and the first magnetic pole core body on the other axial side of the first magnetic pole core body. A sixth end member made of a magnetic material and having an eighth support portion disposed apart from the magnetic pole core body;
The magnetizing direction is an axial direction between the seventh support portion and the second magnetic pole core body, and between the eighth support portion and the first magnetic pole core body, and facing each other. And an auxiliary magnet interposed so as to have a polarity different from that of the seventh support portion, the eighth support portion, the first magnetic pole core body, and the second magnetic pole core body. Rotating electric machine. The fifth end member is made of a magnetic material, and has a fifth connection portion that connects and integrates the fifth support portion and the seventh support portion,
The sixth end member is made of a magnetic material, and has a sixth connection part that connects and integrates the sixth support part and the eighth support part,
The group of the first magnetic pole core bodies is integrated by fastening and fixing the fifth support section, the first magnetic pole core body, the auxiliary magnet, and the eighth support section that are arranged in the axial direction. In addition, the seventh support portion, the auxiliary magnet, the second magnetic pole core body, and the sixth support portion, which are each arranged in the axial direction, are fastened and fixed, and the group of the second magnetic pole core bodies is integrated. The rotating electrical machine according to claim 11, further comprising non-magnetic fastening means for converting to a rotating electrical machine.   The permanent magnet is disposed so as to extend on both sides in the axial direction from between the adjacent first magnetic pole core body and the second magnetic pole core body, and adjacent to the first magnetic pole core body and the adjacent The side surface in the circumferential direction of the extended portion of the permanent magnet extending from the space between the second magnetic pole core body and the one side in the axial direction is in contact with the fifth support portion, and the adjacent first magnetic pole core body and the above The side surface in the circumferential direction of the extended portion of the permanent magnet extending from the space between the second magnetic pole core body and the other side in the axial direction is in contact with the sixth support portion. Item 13. The rotating electrical machine according to any one of Item 12. The shaft is made of a non-magnetic material,
The fifth connecting portion is formed so as to be disposed at an axial position on one axial side of the first magnetic pole core bodies and the second magnetic pole core bodies arranged in the circumferential direction,
The sixth connecting portion is formed so as to be disposed at an axial center position on the other side in the axial direction of the first magnetic pole core bodies and the second magnetic pole core bodies arranged in the circumferential direction,
The said rotor core is fixed to the said shaft by which the said 5th connection part and the said 6th connection part were penetrated to the axial center position, and are hold | maintained at this shaft. The rotating electrical machine according to any one of claims 12, 12 and 13. The shaft is made of a non-magnetic material,
In the rotor core, the first magnetic pole core body and the second magnetic pole core body arranged in a circumferential direction are fixed to the shaft inserted through the axial center position and held by the shaft. The rotating electrical machine according to any one of claims 2, 3, and 7 to 13.

Images