WO2018105046A1 - Permanent magnet type rotating electric machine - Google Patents
Permanent magnet type rotating electric machine Download PDFInfo
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- WO2018105046A1 WO2018105046A1 PCT/JP2016/086323 JP2016086323W WO2018105046A1 WO 2018105046 A1 WO2018105046 A1 WO 2018105046A1 JP 2016086323 W JP2016086323 W JP 2016086323W WO 2018105046 A1 WO2018105046 A1 WO 2018105046A1
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- WIPO (PCT)
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- rotating body
- permanent magnet
- stator
- permanent magnets
- axial direction
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
Definitions
- the present invention relates to a permanent magnet type rotating electrical machine in which a plurality of permanent magnets are bonded to a surface of a rotating body facing a stator.
- a plurality of banks protruding outward in the radial direction are formed on the outer periphery of the yoke portion.
- the bank is arrange
- the present invention has been made to solve the above-described problems. While fixing the permanent magnet to the rotating body with a sufficient amount of adhesive, the adhesive protrudes into the area of the surrounding permanent magnet.
- An object of the present invention is to obtain a permanent magnet type rotating electrical machine that can be suppressed and can improve workability during manufacturing.
- a permanent magnet type rotating electrical machine is opposed to a stator, a cylindrical rotating body rotatable with respect to the stator, and the stator, and spaced apart from each other in the axial direction and the circumferential direction of the rotating body.
- a rotor having a plurality of permanent magnets bonded to the rotating body with an adhesive, and projecting in the radial direction of the rotating body between the permanent magnets adjacent to each other in the circumferential direction of the rotating body.
- the 1st protrusion part is provided and the 2nd protrusion part which protrudes in the radial direction of a rotary body is provided between the permanent magnets adjacent to the axial direction of a rotary body.
- the first protrusion is provided between the permanent magnets adjacent in the circumferential direction of the rotating body
- the second protrusion is provided between the permanent magnets adjacent in the axial direction of the rotating body. Since the protrusion is provided, it is possible to suppress the protrusion of the adhesive to the surrounding permanent magnet area while fixing the permanent magnet to the rotating body with a sufficient amount of adhesive, and workability during manufacturing Can be improved.
- FIG. 1 is a cross-sectional view of a permanent magnet motor according to Embodiment 1 of the present invention.
- FIG. 2 is a plan view showing a part of a rotor viewed along the direction of arrow II in FIG. 1. It is a front view which shows the whole rotor seen along the arrow III direction of FIG. It is a top view which removes a permanent magnet from the rotor of FIG. 2, and shows a rotary body. It is a front view which shows the whole rotary body seen along the arrow V direction of FIG.
- FIG. 6 is a sectional view taken along line VI-VI in FIG. 4. It is a top view which shows a part of rotor of the permanent magnet type motor by Embodiment 2 of this invention.
- FIG. 12 is a cross-sectional view taken along line XII-XII in FIG.
- FIG. 10 is an explanatory diagram illustrating a procedure for forming a magnet arrangement surface on a rotating body according to a third embodiment.
- FIG. 1 is a cross-sectional view of a permanent magnet motor according to Embodiment 1 of the present invention.
- a bowl-shaped housing 1 has a disk-shaped shaft support portion 1a and a cylindrical stator support portion 1b.
- the stator support portion 1b protrudes from the radially outer end of the shaft support portion 1a to one side.
- the stator 2 is fixed to the inner peripheral surface of the stator support portion 1b.
- the stator 2 has an annular stator core 3 and a plurality of stator coils 4 attached to the stator core 3.
- Rotating shaft 6 is rotatably supported through bearing 5 at the center of shaft support portion 1a.
- the rotating shaft 6 penetrates the shaft support portion 1a.
- the rotating shaft 6 is horizontally supported by the shaft support 1a.
- the rotor 7 is fixed to the rotating shaft 6.
- the rotor 7 rotates integrally with the rotation shaft 6 around the rotation shaft 6.
- the rotor 7 includes a cylindrical rotating body 8 and a plurality of permanent magnets 9 fixed to the outer peripheral surface of the rotating body 8.
- the rotating body 8 has a disk-shaped shaft fixing portion 8a fixed to the rotating shaft 6 and a cylindrical magnet fixing portion 8b. A hole through which the rotating shaft 6 is passed is provided in the center of the shaft fixing portion 8a. The rotating shaft 6 penetrates the shaft fixing portion 8a. The magnet fixing part 8b protrudes from the radially outer end of the shaft fixing part 8a to one side.
- Each permanent magnet 9 is bonded to the outer peripheral surface of the magnet fixing portion 8b with an adhesive 10. Each permanent magnet 9 faces the stator 2.
- FIG. 2 is a plan view showing a part of the rotor 7 viewed along the direction of arrow II in FIG. 1
- FIG. 3 is a front view showing the entire rotor 7 viewed along the direction of arrow III in FIG. 2
- FIG. 5 is a plan view showing the rotating body 8 with the permanent magnet 9 removed from the rotor 7 of FIG. 2
- FIG. 5 is a front view showing the entire rotating body 8 taken along the direction of the arrow V in FIG. 4, and FIG. It is sectional drawing which follows a VI line.
- Two permanent magnets 9 are arranged at the same position in the circumferential direction of the rotating body 8. Further, eight permanent magnets 9 are arranged at the same position in the axial direction of the rotating body 8. The permanent magnets 9 are arranged at intervals in the axial direction and the circumferential direction of the rotating body 8.
- the first projecting portion 8 c has a linear shape continuous over the entire axial length of the rotating body 8.
- the first protruding portion 8 c is in contact with both end portions of the permanent magnet 9 in the circumferential direction of the rotating body 8. Thereby, the movement of each permanent magnet 9 in the circumferential direction of the rotating body 8 is restricted.
- the second projecting portions 8d have a rectangular parallelepiped shape that is intermittently arranged at intervals in the circumferential direction of the rotating body 8.
- the second projecting portion 8 d is in contact with the mutually opposing end surfaces of the permanent magnets 9 adjacent in the axial direction of the rotating body 8. This prevents the adhesive 10 applied between the permanent magnet 9 and the magnet fixing portion 8b from protruding into the region of the permanent magnet 9 adjacent in the axial direction.
- the first protrusion 8c and the second protrusion 8d are integrally formed with the rotating body 8 by cutting the outer peripheral surface of the magnet fixing part 8b.
- a magnet arrangement surface 8e which is a flat surface, is formed at a portion where the permanent magnet 9 of the magnet fixing portion 8b is bonded.
- the first protrusion 8 c is provided between the permanent magnets 9 adjacent to each other in the circumferential direction of the rotating body 8, and between the permanent magnets 9 adjacent to each other in the axial direction of the rotating body 8. Since the second projecting portion 8d is provided on the surface of the permanent magnet 9, the adhesive 10 is fixed to the rotating body 8 with a sufficient amount of the adhesive 10, and the protrusion of the adhesive 10 to the area of the surrounding permanent magnet 9 is suppressed. can do. Thereby, while being able to increase the adhesion area of the permanent magnet 9 with respect to the rotary body 8, the wiping operation
- the permanent magnet motor as described above can be used as a motor for an elevator hoist, for example.
- the rotary shaft 6 is provided with a sheave.
- a suspension that suspends the car is wound around the sheave.
- FIG. 7 is a plan view showing a part of the rotor 7 of the permanent magnet motor according to the second embodiment of the present invention.
- FIG. 8 is a plan view showing the rotating body 8 with the permanent magnet 9 removed from the rotor 7 of FIG.
- FIGS. 9A and 9B are front views showing the entire rotating body 8 viewed along the direction of the arrow IX in FIG.
- the second protrusion 8d is continuously provided over the entire circumference of the rotating body 8. That is, the second protrusion 8d of the second embodiment is annular.
- the first protrusions 8 c are arranged separately on both sides of the second protrusion 8 d in the axial direction of the rotating body 8 at the same circumferential position of the rotating body 8.
- Other configurations are the same as those in the first embodiment.
- FIG. 10 is a plan view showing a part of the rotor 7 of the permanent magnet motor according to Embodiment 3 of the present invention.
- FIG. 11 is a plan view showing the rotating body 8 with the permanent magnet 9 removed from the rotor 7 of FIG. 12 and 12 are cross-sectional views taken along the line XII-XII in FIG.
- each 1st protrusion part 8c is arrange
- the outer shape of the cross section of the portion where the axially continuous plane 8f of the rotating body 8 is provided is a regular n-gon.
- N is the number of permanent magnets 9 provided at the same position in the axial direction of the rotating body 8.
- Other configurations are the same as those in the second embodiment.
- the magnet arrangement surface 8e is formed by cutting the outer periphery of a cylindrical member (not shown) by, for example, milling. Specifically, after the cylindrical member is fixed so as not to rotate, the end mill disposed substantially perpendicular to the outer peripheral surface of the cylindrical member is substantially extended along the axial direction from the axial end surface of the cylindrical member. It is moved horizontally (circle 20a to circle 20b, circle 21a to circle 21b in FIG. 13).
- the end mill is moved in the direction perpendicular to the axis parallel to the outer circumferential tangent surface of the cylindrical member (circle 20b to circle 20c, circle 21b to circle 21c in FIG. 13). Subsequently, the end mill is moved again in the direction of the axis parallel to the outer circumferential tangent surface of the cylindrical member (circle 20c to circle 20d, circle 21c to circle 21c in FIG. 13). At this time, the circle 20d is shifted to the lower side in FIG. 13 from the circle 20b, and the circle 21d is shifted to the upper side in FIG. 13 from the circle 21b.
- the wall surfaces adjacent to the magnet arrangement surface 8e of the first protrusion 8c and the second protrusion 8d can be formed at the time of forming the magnet arrangement surface 8e. It can be formed easily. That is, the first protrusion 8c, the second protrusion 8d, and the magnet arrangement surface 8e can be easily formed by milling, and the manufacturing process can be simplified.
- the number of permanent magnets is not particularly limited. Further, three or more permanent magnets may be arranged side by side in the axial direction of the rotating body. Further, the motor may be skewed. Furthermore, in the above example, the rotor 7 is disposed inside the stator 2, but the present invention can also be applied to an outer rotor type rotating electrical machine in which the rotor is disposed outside the stator. In this case, the first and second protrusions protrude radially inward from the inner peripheral surface of the rotating body. The present invention can also be applied to a generator.
- stator 7 rotor, 8 rotating body, 8c first protrusion, 8d second protrusion, 8e magnet placement surface, 8f continuous plane, 9 permanent magnet, 10 adhesive.
Abstract
Disclosed is a permanent magnet type rotating electric machine wherein a rotor has: a cylindrical rotating body capable of rotating with respect to a stator; and a plurality of permanent magnets, which face the stator, and which are bonded using an adhesive to the rotating body at intervals in the axis direction and the circumferential direction of the rotating body. First protruding sections protruding in the radial direction of the rotating body are provided among the permanent magnets adjacent to each other in the circumferential direction of the rotating body. Second protruding sections protruding in the radial direction of the rotating body are provided among the permanent magnets adjacent to each other in the axis direction of the rotating body.
Description
この発明は、回転体のステータに対向する面に複数個の永久磁石が接着されている永久磁石式回転電機に関するものである。
The present invention relates to a permanent magnet type rotating electrical machine in which a plurality of permanent magnets are bonded to a surface of a rotating body facing a stator.
従来の表面永久磁石式の永久磁石モータでは、回転体に対する永久磁石の移動を制限し、磁石固定の信頼性を向上するため、接着剤により永久磁石を回転体に固定する方法が広く用いられている。
In conventional surface permanent magnet type permanent magnet motors, a method of fixing a permanent magnet to a rotating body with an adhesive is widely used in order to limit the movement of the permanent magnet relative to the rotating body and improve the reliability of fixing the magnet. Yes.
また、従来の永久磁石式回転電機では、ヨーク部の外周に径方向外側へ突出した複数の土手が形成されている。土手は、回転体の周方向の永久磁石の両側に配置されている（例えば、特許文献１参照）。
Further, in the conventional permanent magnet type rotating electrical machine, a plurality of banks protruding outward in the radial direction are formed on the outer periphery of the yoke portion. The bank is arrange | positioned at the both sides of the permanent magnet of the circumferential direction of a rotary body (for example, refer patent document 1).
上記のような従来の永久磁石式回転電機では、回転体の周方向の永久磁石の両側のみに土手が形成されている。このため、永久磁石を回転体の軸方向に多列貼りする構成では、接着面積を確保するために接着剤の塗布量を増やすと、軸方向に並んだ永久磁石の領域まで接着剤がはみ出し、はみ出した接着剤を拭き取る作業が必要となる場合があり、組立時の作業性が低下する。
In the conventional permanent magnet type rotating electrical machine as described above, banks are formed only on both sides of the permanent magnet in the circumferential direction of the rotating body. For this reason, in the configuration in which the permanent magnets are attached in multiple rows in the axial direction of the rotating body, when the amount of adhesive applied is increased in order to secure the adhesive area, the adhesive protrudes to the region of the permanent magnets aligned in the axial direction. An operation of wiping off the protruding adhesive may be required, and the workability during assembly is reduced.
この発明は、上記のような課題を解決するためになされたものであり、十分な量の接着剤で永久磁石を回転体に固定しつつ、周囲の永久磁石の領域への接着剤のはみ出しを抑制することができ、製造時の作業性を向上させることができる永久磁石式回転電機を得ることを目的とする。
The present invention has been made to solve the above-described problems. While fixing the permanent magnet to the rotating body with a sufficient amount of adhesive, the adhesive protrudes into the area of the surrounding permanent magnet. An object of the present invention is to obtain a permanent magnet type rotating electrical machine that can be suppressed and can improve workability during manufacturing.
この発明に係る永久磁石式回転電機は、ステータ、及びステータに対して回転可能な筒状の回転体と、ステータに対向しており、かつ回転体の軸方向及び周方向に互いに間隔をおいて、接着剤により回転体に接着されている複数個の永久磁石とを有しているロータを備え、回転体の周方向に隣り合う永久磁石の間には、回転体の径方向へ突出している第１の突出部が設けられており、回転体の軸方向に隣り合う永久磁石の間には、回転体の径方向へ突出している第２の突出部が設けられている。
A permanent magnet type rotating electrical machine according to the present invention is opposed to a stator, a cylindrical rotating body rotatable with respect to the stator, and the stator, and spaced apart from each other in the axial direction and the circumferential direction of the rotating body. And a rotor having a plurality of permanent magnets bonded to the rotating body with an adhesive, and projecting in the radial direction of the rotating body between the permanent magnets adjacent to each other in the circumferential direction of the rotating body. The 1st protrusion part is provided and the 2nd protrusion part which protrudes in the radial direction of a rotary body is provided between the permanent magnets adjacent to the axial direction of a rotary body.
この発明の永久磁石式回転電機は、回転体の周方向に隣り合う永久磁石の間に第１の突出部が設けられており、回転体の軸方向に隣り合う永久磁石の間に第２の突出部が設けられているので、十分な量の接着剤で永久磁石を回転体に固定しつつ、周囲の永久磁石の領域への接着剤のはみ出しを抑制することができ、製造時の作業性を向上させることができる。
In the permanent magnet type rotating electrical machine of the present invention, the first protrusion is provided between the permanent magnets adjacent in the circumferential direction of the rotating body, and the second protrusion is provided between the permanent magnets adjacent in the axial direction of the rotating body. Since the protrusion is provided, it is possible to suppress the protrusion of the adhesive to the surrounding permanent magnet area while fixing the permanent magnet to the rotating body with a sufficient amount of adhesive, and workability during manufacturing Can be improved.
以下、この発明を実施するための形態について、図面を参照して説明する。
実施の形態１．
図１はこの発明の実施の形態１による永久磁石式モータの断面図である。図において、椀状のハウジング１は、円板状の軸支持部１ａと、円筒状のステータ支持部１ｂとを有している。ステータ支持部１ｂは、軸支持部１ａの径方向外側端部から一側へ突出している。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a cross-sectional view of a permanent magnet motor according toEmbodiment 1 of the present invention. In the figure, a bowl-shaped housing 1 has a disk-shaped shaft support portion 1a and a cylindrical stator support portion 1b. The stator support portion 1b protrudes from the radially outer end of the shaft support portion 1a to one side.
実施の形態１．
図１はこの発明の実施の形態１による永久磁石式モータの断面図である。図において、椀状のハウジング１は、円板状の軸支持部１ａと、円筒状のステータ支持部１ｂとを有している。ステータ支持部１ｂは、軸支持部１ａの径方向外側端部から一側へ突出している。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view of a permanent magnet motor according to
ステータ支持部１ｂの内周面には、ステータ２が固定されている。ステータ２は、環状のステータ鉄心３と、ステータ鉄心３に装着されている複数のステータコイル４とを有している。
The stator 2 is fixed to the inner peripheral surface of the stator support portion 1b. The stator 2 has an annular stator core 3 and a plurality of stator coils 4 attached to the stator core 3.
軸支持部１ａの中央には、軸受５を介して回転軸６が回転可能に支持されている。回転軸６は、軸支持部１ａを貫通している。また、回転軸６は、軸支持部１ａに水平に支持されている。
Rotating shaft 6 is rotatably supported through bearing 5 at the center of shaft support portion 1a. The rotating shaft 6 penetrates the shaft support portion 1a. The rotating shaft 6 is horizontally supported by the shaft support 1a.
回転軸６には、ロータ７が固定されている。ロータ７は、回転軸６を中心として回転軸６と一体に回転する。また、ロータ７は、円筒状の回転体８と、回転体８の外周面に固定されている複数個の永久磁石９とを有している。
The rotor 7 is fixed to the rotating shaft 6. The rotor 7 rotates integrally with the rotation shaft 6 around the rotation shaft 6. The rotor 7 includes a cylindrical rotating body 8 and a plurality of permanent magnets 9 fixed to the outer peripheral surface of the rotating body 8.
回転体８は、回転軸６に固定されている円板状の軸固定部８ａと、円筒状の磁石固定部８ｂとを有している。軸固定部８ａの中央には、回転軸６を通す孔が設けられている。回転軸６は、軸固定部８ａを貫通している。磁石固定部８ｂは、軸固定部８ａの径方向外側端部から一側へ突出している。
The rotating body 8 has a disk-shaped shaft fixing portion 8a fixed to the rotating shaft 6 and a cylindrical magnet fixing portion 8b. A hole through which the rotating shaft 6 is passed is provided in the center of the shaft fixing portion 8a. The rotating shaft 6 penetrates the shaft fixing portion 8a. The magnet fixing part 8b protrudes from the radially outer end of the shaft fixing part 8a to one side.
各永久磁石９は、磁石固定部８ｂの外周面に、接着剤１０により接着されている。また、各永久磁石９は、ステータ２に対向している。
Each permanent magnet 9 is bonded to the outer peripheral surface of the magnet fixing portion 8b with an adhesive 10. Each permanent magnet 9 faces the stator 2.
図２は図１の矢印ＩＩ方向に沿って見たロータ７の一部を示す平面図、図３は図２の矢印ＩＩＩ方向に沿って見たロータ７全体を示す正面図、図４は図２のロータ７から永久磁石９を取り除いて回転体８を示す平面図、図５は図４の矢印Ｖ方向に沿って見た回転体８全体を示す正面図、図６は図４のＶＩ－ＶＩ線に沿う断面図である。
2 is a plan view showing a part of the rotor 7 viewed along the direction of arrow II in FIG. 1, FIG. 3 is a front view showing the entire rotor 7 viewed along the direction of arrow III in FIG. 2, and FIG. 5 is a plan view showing the rotating body 8 with the permanent magnet 9 removed from the rotor 7 of FIG. 2, FIG. 5 is a front view showing the entire rotating body 8 taken along the direction of the arrow V in FIG. 4, and FIG. It is sectional drawing which follows a VI line.
回転体８の周方向の同じ位置には、永久磁石９が２個ずつ配置されている。また、回転体８の軸方向の同じ位置には、永久磁石９が８個ずつ配置されている。永久磁石９は、回転体８の軸方向及び周方向に互いに間隔をおいて配置されている。
Two permanent magnets 9 are arranged at the same position in the circumferential direction of the rotating body 8. Further, eight permanent magnets 9 are arranged at the same position in the axial direction of the rotating body 8. The permanent magnets 9 are arranged at intervals in the axial direction and the circumferential direction of the rotating body 8.
回転体８の周方向に隣り合う永久磁石９の間には、回転体８の径方向外側へ突出している複数の第１の突出部８ｃが設けられている。第１の突出部８ｃは、回転体８の軸方向の全長に渡って連続した直線状である。
Between the permanent magnets 9 adjacent to each other in the circumferential direction of the rotating body 8, a plurality of first protruding portions 8 c that protrude outward in the radial direction of the rotating body 8 are provided. The first projecting portion 8 c has a linear shape continuous over the entire axial length of the rotating body 8.
また、第１の突出部８ｃは、回転体８の周方向の永久磁石９の両端部に接している。これにより、回転体８の周方向への各永久磁石９の移動が制限されている。
Further, the first protruding portion 8 c is in contact with both end portions of the permanent magnet 9 in the circumferential direction of the rotating body 8. Thereby, the movement of each permanent magnet 9 in the circumferential direction of the rotating body 8 is restricted.
回転体８の軸方向に隣り合う永久磁石９の間には、回転体８の径方向外側へ突出している複数の第２の突出部８ｄが設けられている。第２の突出部８ｄは、回転体８の周方向に互いに間隔をおいて断続的に配置された直方体状である。
Between the permanent magnets 9 adjacent to each other in the axial direction of the rotating body 8, a plurality of second protruding portions 8 d that protrude outward in the radial direction of the rotating body 8 are provided. The second projecting portions 8d have a rectangular parallelepiped shape that is intermittently arranged at intervals in the circumferential direction of the rotating body 8.
また、第２の突出部８ｄは、回転体８の軸方向に隣り合う永久磁石９の互いに対向する端面に接している。これにより、永久磁石９と磁石固定部８ｂとの間に塗布される接着剤１０が、軸方向に隣り合う永久磁石９の領域にはみ出すのが防止される。
Further, the second projecting portion 8 d is in contact with the mutually opposing end surfaces of the permanent magnets 9 adjacent in the axial direction of the rotating body 8. This prevents the adhesive 10 applied between the permanent magnet 9 and the magnet fixing portion 8b from protruding into the region of the permanent magnet 9 adjacent in the axial direction.
第１の突出部８ｃ及び第２の突出部８ｄは、磁石固定部８ｂの外周面を切削することにより、回転体８に一体に形成されている。磁石固定部８ｂの永久磁石９が接着されている部分には、平面である磁石配置面８ｅが形成されている。
The first protrusion 8c and the second protrusion 8d are integrally formed with the rotating body 8 by cutting the outer peripheral surface of the magnet fixing part 8b. A magnet arrangement surface 8e, which is a flat surface, is formed at a portion where the permanent magnet 9 of the magnet fixing portion 8b is bonded.
このような永久磁石式モータでは、回転体８の周方向に隣り合う永久磁石９の間に第１の突出部８ｃが設けられており、回転体８の軸方向に隣り合う永久磁石９の間に第２の突出部８ｄが設けられているので、十分な量の接着剤１０で永久磁石９を回転体８に固定しつつ、周囲の永久磁石９の領域への接着剤１０のはみ出しを抑制することができる。これにより、回転体８に対する永久磁石９の接着面積を増やすことができるとともに、接着剤１０の拭き取り作業を省略して、製造時の作業性を向上させることができる。即ち、磁石接着面積の増大と作業性向上との両立が可能となる。
In such a permanent magnet type motor, the first protrusion 8 c is provided between the permanent magnets 9 adjacent to each other in the circumferential direction of the rotating body 8, and between the permanent magnets 9 adjacent to each other in the axial direction of the rotating body 8. Since the second projecting portion 8d is provided on the surface of the permanent magnet 9, the adhesive 10 is fixed to the rotating body 8 with a sufficient amount of the adhesive 10, and the protrusion of the adhesive 10 to the area of the surrounding permanent magnet 9 is suppressed. can do. Thereby, while being able to increase the adhesion area of the permanent magnet 9 with respect to the rotary body 8, the wiping operation | work of the adhesive agent 10 is abbreviate | omitted and workability | operativity at the time of manufacture can be improved. That is, it is possible to increase both the magnet adhesion area and workability.
なお、上記のような永久磁石式モータは、例えばエレベータ巻上機のモータとして使用することができる。この場合、回転軸６には、綱車が設けられる。綱車には、かごを吊り下げる懸架体が巻き掛けられる。
Note that the permanent magnet motor as described above can be used as a motor for an elevator hoist, for example. In this case, the rotary shaft 6 is provided with a sheave. A suspension that suspends the car is wound around the sheave.
実施の形態２．
次に、図７はこの発明の実施の形態２による永久磁石式モータのロータ７の一部を示す平面図、図８は図７のロータ７から永久磁石９を取り除いて回転体８を示す平面図、図９は図８の矢印ＩＸ方向に沿って見た回転体８全体を示す正面図である。Embodiment 2. FIG.
7 is a plan view showing a part of therotor 7 of the permanent magnet motor according to the second embodiment of the present invention. FIG. 8 is a plan view showing the rotating body 8 with the permanent magnet 9 removed from the rotor 7 of FIG. FIGS. 9A and 9B are front views showing the entire rotating body 8 viewed along the direction of the arrow IX in FIG.
次に、図７はこの発明の実施の形態２による永久磁石式モータのロータ７の一部を示す平面図、図８は図７のロータ７から永久磁石９を取り除いて回転体８を示す平面図、図９は図８の矢印ＩＸ方向に沿って見た回転体８全体を示す正面図である。
7 is a plan view showing a part of the
実施の形態２では、第２の突出部８ｄが回転体８の周方向の全周に渡って連続して設けられている。即ち、実施の形態２の第２の突出部８ｄは、環状である。第１の突出部８ｃは、回転体８の周方向の同じ位置で、回転体８の軸方向の第２の突出部８ｄの両側に分けて配置されている。他の構成は、実施の形態１と同様である。
In the second embodiment, the second protrusion 8d is continuously provided over the entire circumference of the rotating body 8. That is, the second protrusion 8d of the second embodiment is annular. The first protrusions 8 c are arranged separately on both sides of the second protrusion 8 d in the axial direction of the rotating body 8 at the same circumferential position of the rotating body 8. Other configurations are the same as those in the first embodiment.
このような永久磁石式モータでは、第２の突出部８ｄを回転体８の周方向の全周に渡って連続して設けたので、接着剤１０のはみ出しをより確実に防止することができる。
In such a permanent magnet motor, since the second projecting portion 8d is continuously provided over the entire circumference of the rotating body 8, it is possible to more reliably prevent the adhesive 10 from protruding.
実施の形態３．
次に、図１０はこの発明の実施の形態３による永久磁石式モータのロータ７の一部を示す平面図、図１１は図１０のロータ７から永久磁石９を取り除いて回転体８を示す平面図、図１２は図１１のＸＩＩ－ＸＩＩ線に沿う断面図である。Embodiment 3 FIG.
10 is a plan view showing a part of therotor 7 of the permanent magnet motor according to Embodiment 3 of the present invention. FIG. 11 is a plan view showing the rotating body 8 with the permanent magnet 9 removed from the rotor 7 of FIG. 12 and 12 are cross-sectional views taken along the line XII-XII in FIG.
次に、図１０はこの発明の実施の形態３による永久磁石式モータのロータ７の一部を示す平面図、図１１は図１０のロータ７から永久磁石９を取り除いて回転体８を示す平面図、図１２は図１１のＸＩＩ－ＸＩＩ線に沿う断面図である。
10 is a plan view showing a part of the
回転体８の軸方向に隣り合う第１の突出部８ｃの間には、磁石配置面８ｅと面一の平面である連続平面８ｆが形成されている。これにより、各第１の突出部８ｃは、第２の突出部８ｄに対して、回転体８の軸方向に間隔をおいて配置されている。回転体８の軸方向の連続平面８ｆが設けられている部分の断面の外形は、正ｎ角形である。また、ｎは、回転体８の軸方向の同じ位置に設けられている永久磁石９の個数である。他の構成は、実施の形態２と同様である。
Between the first protrusions 8c adjacent to each other in the axial direction of the rotating body 8, a continuous plane 8f that is flush with the magnet arrangement surface 8e is formed. Thereby, each 1st protrusion part 8c is arrange | positioned at intervals in the axial direction of the rotary body 8 with respect to the 2nd protrusion part 8d. The outer shape of the cross section of the portion where the axially continuous plane 8f of the rotating body 8 is provided is a regular n-gon. N is the number of permanent magnets 9 provided at the same position in the axial direction of the rotating body 8. Other configurations are the same as those in the second embodiment.
次に、回転体８に磁石配置面８ｅを形成するための手順を図１３に示す。磁石配置面８ｅは、円筒状部材（図示せず）の外周を、例えばフライス加工により切削することで形成される。具体的には、円筒状部材が回転しないように固定した後、円筒状部材の外周面に対して略垂直に配置されたエンドミルを、円筒状部材の軸線方向の端面から軸線方向に沿って略水平移動させる（図１３の円２０ａから円２０ｂ、円２１ａから円２１ｂ）。
Next, the procedure for forming the magnet arrangement surface 8e on the rotating body 8 is shown in FIG. The magnet arrangement surface 8e is formed by cutting the outer periphery of a cylindrical member (not shown) by, for example, milling. Specifically, after the cylindrical member is fixed so as not to rotate, the end mill disposed substantially perpendicular to the outer peripheral surface of the cylindrical member is substantially extended along the axial direction from the axial end surface of the cylindrical member. It is moved horizontally (circle 20a to circle 20b, circle 21a to circle 21b in FIG. 13).
その後、エンドミルを円筒状部材の外周接線面と平行であって軸線に対して垂直方向へ移動させる（図１３の円２０ｂから円２０ｃ、円２１ｂから円２１ｃ）。続いて、エンドミルを円筒状部材の外周接線面と平行に再び軸線側へ移動させる（図１３の円２０ｃから円２０ｄ、円２１ｃから円２１ｃ）。このとき、円２０ｄは、円２０ｂよりも図１３の下側へずれており、円２１ｄは、円２１ｂよりも図１３の上側へずれている。
Thereafter, the end mill is moved in the direction perpendicular to the axis parallel to the outer circumferential tangent surface of the cylindrical member (circle 20b to circle 20c, circle 21b to circle 21c in FIG. 13). Subsequently, the end mill is moved again in the direction of the axis parallel to the outer circumferential tangent surface of the cylindrical member (circle 20c to circle 20d, circle 21c to circle 21c in FIG. 13). At this time, the circle 20d is shifted to the lower side in FIG. 13 from the circle 20b, and the circle 21d is shifted to the upper side in FIG. 13 from the circle 21b.
このように、磁石配置面８ｅと同時に連続平面８ｆを形成することにより、第１の突出部８ｃ及び第２の突出部８ｄの磁石配置面８ｅに隣接する壁面を、磁石配置面８ｅの形成時に容易に形成することができる。即ち、第１の突出部８ｃ、第２の突出部８ｄ及び磁石配置面８ｅを、フライス加工によって容易に形成でき、製造工程の簡素化を実現することができる。
Thus, by forming the continuous flat surface 8f simultaneously with the magnet arrangement surface 8e, the wall surfaces adjacent to the magnet arrangement surface 8e of the first protrusion 8c and the second protrusion 8d can be formed at the time of forming the magnet arrangement surface 8e. It can be formed easily. That is, the first protrusion 8c, the second protrusion 8d, and the magnet arrangement surface 8e can be easily formed by milling, and the manufacturing process can be simplified.
なお、永久磁石の個数は特に限定されない。
また、永久磁石は、回転体の軸方向に３個以上並べて配置してもよい。
さらに、モータは、スキューが付いていてもよい。
さらにまた、上記の例では、ロータ７がステータ２の内側に配置されているが、この発明は、ロータがステータの外側に配置されているアウタロータタイプの回転電機にも適用できる。この場合、第１及び第２の突出部は、回転体の内周面から径方向内側へ突出する。
また、この発明は、発電機にも適用できる。 The number of permanent magnets is not particularly limited.
Further, three or more permanent magnets may be arranged side by side in the axial direction of the rotating body.
Further, the motor may be skewed.
Furthermore, in the above example, therotor 7 is disposed inside the stator 2, but the present invention can also be applied to an outer rotor type rotating electrical machine in which the rotor is disposed outside the stator. In this case, the first and second protrusions protrude radially inward from the inner peripheral surface of the rotating body.
The present invention can also be applied to a generator.
また、永久磁石は、回転体の軸方向に３個以上並べて配置してもよい。
さらに、モータは、スキューが付いていてもよい。
さらにまた、上記の例では、ロータ７がステータ２の内側に配置されているが、この発明は、ロータがステータの外側に配置されているアウタロータタイプの回転電機にも適用できる。この場合、第１及び第２の突出部は、回転体の内周面から径方向内側へ突出する。
また、この発明は、発電機にも適用できる。 The number of permanent magnets is not particularly limited.
Further, three or more permanent magnets may be arranged side by side in the axial direction of the rotating body.
Further, the motor may be skewed.
Furthermore, in the above example, the
The present invention can also be applied to a generator.
２ ステータ、７ ロータ、８ 回転体、８ｃ 第１の突出部、８ｄ 第２の突出部、８ｅ 磁石配置面、８ｆ 連続平面、９ 永久磁石、１０ 接着剤。
2 stator, 7 rotor, 8 rotating body, 8c first protrusion, 8d second protrusion, 8e magnet placement surface, 8f continuous plane, 9 permanent magnet, 10 adhesive.
Claims (3)
- ステータ、及び
前記ステータに対して回転可能な筒状の回転体と、前記ステータに対向しており、かつ前記回転体の軸方向及び周方向に互いに間隔をおいて、接着剤により前記回転体に接着されている複数個の永久磁石とを有しているロータ
を備え、
前記回転体の周方向に隣り合う前記永久磁石の間には、前記回転体の径方向へ突出している第１の突出部が設けられており、
前記回転体の軸方向に隣り合う前記永久磁石の間には、前記回転体の径方向へ突出している第２の突出部が設けられている永久磁石式回転電機。 A stator, a cylindrical rotating body rotatable with respect to the stator, and opposed to the stator, and spaced apart from each other in an axial direction and a circumferential direction of the rotating body by an adhesive. A rotor having a plurality of bonded permanent magnets,
Between the permanent magnets adjacent to each other in the circumferential direction of the rotating body, a first protruding portion that protrudes in the radial direction of the rotating body is provided,
A permanent magnet type rotating electrical machine in which a second protrusion protruding in the radial direction of the rotating body is provided between the permanent magnets adjacent to each other in the axial direction of the rotating body. - 前記第２の突出部は、前記回転体の周方向の全周に渡って連続して設けられている請求項１記載の永久磁石式回転電機。 The permanent magnet type rotating electrical machine according to claim 1, wherein the second projecting portion is continuously provided over the entire circumference in the circumferential direction of the rotating body.
- 前記回転体の前記永久磁石が接着されている部分には、平面である磁石配置面が形成されており、
前記第１の突出部は、前記回転体の軸方向に複数に分割されており、
前記回転体の軸方向に隣り合う前記第１の突出部の間には、前記磁石配置面と面一の平面である連続平面が形成されている請求項１又は請求項２に記載の永久磁石式回転電機。 In the portion where the permanent magnet of the rotating body is bonded, a magnet arrangement surface that is a plane is formed,
The first protrusion is divided into a plurality of portions in the axial direction of the rotating body,
The permanent magnet according to claim 1, wherein a continuous flat surface that is flush with the magnet arrangement surface is formed between the first projecting portions adjacent to each other in the axial direction of the rotating body. Rotary electric machine.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| JP2018538907A JPWO2018105046A1 (en) | 2016-12-07 | 2016-12-07 | Permanent magnet rotating electric machine |
| PCT/JP2016/086323 WO2018105046A1 (en) | 2016-12-07 | 2016-12-07 | Permanent magnet type rotating electric machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2016/086323 WO2018105046A1 (en) | 2016-12-07 | 2016-12-07 | Permanent magnet type rotating electric machine |
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| WO2018105046A1 true WO2018105046A1 (en) | 2018-06-14 |
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| PCT/JP2016/086323 WO2018105046A1 (en) | 2016-12-07 | 2016-12-07 | Permanent magnet type rotating electric machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020137293A1 (en) * | 2018-12-25 | 2020-07-02 | 日本電産株式会社 | Rotor and motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007037289A (en) * | 2005-07-27 | 2007-02-08 | Meidensha Corp | Permanent magnet rotary electric machine |
| JP2009268263A (en) * | 2008-04-25 | 2009-11-12 | Jtekt Corp | Rotor of motor and electric power steering apparatus |
| JP2013198259A (en) * | 2012-03-19 | 2013-09-30 | Yaskawa Electric Corp | Rotor manufacturing device, rotor manufacturing method and permanent magnet positioning method |
-
2016
- 2016-12-07 JP JP2018538907A patent/JPWO2018105046A1/en active Pending
- 2016-12-07 WO PCT/JP2016/086323 patent/WO2018105046A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007037289A (en) * | 2005-07-27 | 2007-02-08 | Meidensha Corp | Permanent magnet rotary electric machine |
| JP2009268263A (en) * | 2008-04-25 | 2009-11-12 | Jtekt Corp | Rotor of motor and electric power steering apparatus |
| JP2013198259A (en) * | 2012-03-19 | 2013-09-30 | Yaskawa Electric Corp | Rotor manufacturing device, rotor manufacturing method and permanent magnet positioning method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020137293A1 (en) * | 2018-12-25 | 2020-07-02 | 日本電産株式会社 | Rotor and motor |
| JP7367701B2 (en) | 2018-12-25 | 2023-10-24 | ニデック株式会社 | rotor and motor |
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