WO2018105046A1 - Machine électrique rotative de type à aimant permanent - Google Patents

Machine électrique rotative de type à aimant permanent Download PDF

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Publication number
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
Authority
WO
WIPO (PCT)
Prior art keywords
rotating body
permanent magnet
stator
permanent magnets
axial direction
Prior art date
Application number
PCT/JP2016/086323
Other languages
English (en)
Japanese (ja)
Inventor
進 大島
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2018538907A priority Critical patent/JPWO2018105046A1/ja
Priority to PCT/JP2016/086323 priority patent/WO2018105046A1/fr
Publication of WO2018105046A1 publication Critical patent/WO2018105046A1/fr

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Classifications

    • 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

L'invention concerne une machine électrique rotative de type à aimant permanent dans laquelle un rotor a : un corps rotatif cylindrique pouvant tourner par rapport à un stator ; et une pluralité d'aimants permanents, lesquels font face au stator, et qui sont soudés au moyen d'un adhésif au corps rotatif à des intervalles dans la direction de l'axe et dans la direction circonférentielle du corps rotatif. De premières sections en saillie dépassant dans la direction radiale du corps rotatif sont disposées parmi les aimants permanents adjacents les uns aux autres dans la direction circonférentielle du corps rotatif. De deuxièmes sections en saillie dépassant dans la direction radiale du corps rotatif sont disposées parmi les aimants permanents adjacents les uns aux autres dans la direction de l'axe du corps rotatif.
PCT/JP2016/086323 2016-12-07 2016-12-07 Machine électrique rotative de type à aimant permanent WO2018105046A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2018538907A JPWO2018105046A1 (ja) 2016-12-07 2016-12-07 永久磁石式回転電機
PCT/JP2016/086323 WO2018105046A1 (fr) 2016-12-07 2016-12-07 Machine électrique rotative de type à aimant permanent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/086323 WO2018105046A1 (fr) 2016-12-07 2016-12-07 Machine électrique rotative de type à aimant permanent

Publications (1)

Publication Number Publication Date
WO2018105046A1 true WO2018105046A1 (fr) 2018-06-14

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Application Number Title Priority Date Filing Date
PCT/JP2016/086323 WO2018105046A1 (fr) 2016-12-07 2016-12-07 Machine électrique rotative de type à aimant permanent

Country Status (2)

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JP (1) JPWO2018105046A1 (fr)
WO (1) WO2018105046A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020137293A1 (fr) * 2018-12-25 2020-07-02 日本電産株式会社 Rotor et moteur

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007037289A (ja) * 2005-07-27 2007-02-08 Meidensha Corp 永久磁石形回転電機
JP2009268263A (ja) * 2008-04-25 2009-11-12 Jtekt Corp モーターのローター及び電動パワーステアリング装置
JP2013198259A (ja) * 2012-03-19 2013-09-30 Yaskawa Electric Corp ロータ製造装置、ロータ製造方法および永久磁石位置決め方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007037289A (ja) * 2005-07-27 2007-02-08 Meidensha Corp 永久磁石形回転電機
JP2009268263A (ja) * 2008-04-25 2009-11-12 Jtekt Corp モーターのローター及び電動パワーステアリング装置
JP2013198259A (ja) * 2012-03-19 2013-09-30 Yaskawa Electric Corp ロータ製造装置、ロータ製造方法および永久磁石位置決め方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020137293A1 (fr) * 2018-12-25 2020-07-02 日本電産株式会社 Rotor et moteur
JPWO2020137293A1 (ja) * 2018-12-25 2021-11-04 日本電産株式会社 ロータ、およびモータ
JP7367701B2 (ja) 2018-12-25 2023-10-24 ニデック株式会社 ロータ、およびモータ

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Publication number Publication date
JPWO2018105046A1 (ja) 2018-12-06

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