WO2018042634A1 - Rotor, machine dynamoélectrique, et procédé de fabrication de rotor - Google Patents

Rotor, machine dynamoélectrique, et procédé de fabrication de rotor Download PDF

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Publication number
WO2018042634A1
WO2018042634A1 PCT/JP2016/075873 JP2016075873W WO2018042634A1 WO 2018042634 A1 WO2018042634 A1 WO 2018042634A1 JP 2016075873 W JP2016075873 W JP 2016075873W WO 2018042634 A1 WO2018042634 A1 WO 2018042634A1
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WO
WIPO (PCT)
Prior art keywords
rotor
magnet
magnetic steel
axial direction
hole
Prior art date
Application number
PCT/JP2016/075873
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English (en)
Japanese (ja)
Inventor
陽介 山田
Original Assignee
日本電産株式会社
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 日本電産株式会社 filed Critical 日本電産株式会社
Priority to JP2018536649A priority Critical patent/JPWO2018042634A1/ja
Priority to CN201680088763.3A priority patent/CN109643920A/zh
Priority to PCT/JP2016/075873 priority patent/WO2018042634A1/fr
Publication of WO2018042634A1 publication Critical patent/WO2018042634A1/fr

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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 rotor, a rotating electrical machine, and a method for manufacturing the rotor.
  • an IPM (Interior Permanent Magnet) motor having a structure in which a permanent magnet for a field is embedded in a rotor is known.
  • a second laminated core in which a magnet insertion hole is formed is laminated on the first laminated core, and after inserting a magnet into the magnet insertion hole,
  • a rotor structure for an IPM motor having a rotor laminated core body in which a third laminated core is laminated as an end plate is disclosed. In the rotor structure, both ends of the magnet inserted into the magnet insertion hole are sandwiched between the first and third laminated cores.
  • JP-A-2015-204718 discloses an embedded magnet rotor having a cylindrical rotor core, a plurality of permanent magnets, and a plurality of wedge members.
  • the rotor core has a plurality of magnet insertion holes arranged in a ring shape and a plurality of wedge insertion holes arranged in a ring shape inside and outside the row of the respective magnet insertion holes.
  • the plurality of permanent magnets are inserted into the plurality of magnet insertion holes, respectively.
  • the plurality of wedge members are respectively inserted into the plurality of wedge insertion holes.
  • the permanent magnets are fixed inside the magnet insertion holes by narrowing the magnet insertion holes as the rotor core is deformed by inserting the wedge members into the wedge insertion holes.
  • a permanent magnet can be fixed in the insertion hole without using an adhesive.
  • the first laminated core and the third laminated core have different shapes from the second laminated core. That is, it is necessary to prepare a plurality of types of laminated cores having different shapes.
  • a wedge member for fixing the permanent magnet is required. That is, it is necessary to add a member to fix the permanent magnet, and the number of parts increases.
  • an object of the present invention is to provide a technique that makes it possible to manufacture a rotor in which a magnet is embedded inside at a low cost.
  • Another object of the present invention is to provide a rotating electrical machine that has such a rotor and can be manufactured easily and at low cost.
  • An exemplary rotor of the present invention is a rotor of a rotating electrical machine that rotates about a central axis, a rotor core having a plurality of magnetic steel plates laminated in the axial direction and having a through-hole penetrating in the axial direction, and the penetration And a magnet inserted into the hole.
  • the rotor core has, on at least one side in the axial direction, a fixing portion in which at least one magnetic steel plate including the outermost magnetic steel plate is plastically deformed. The magnet is fixed by the fixing portion.
  • the exemplary rotating electrical machine of the present invention has the exemplary rotor of the present invention described above.
  • An exemplary method for manufacturing a rotor of the present invention is a method for manufacturing a rotor of a rotating electrical machine that rotates about a central axis, the first step of laminating a plurality of magnetic steel plates having openings in the axial direction, and a plurality of methods
  • a third step of fixing the magnet by plastic deformation of the magnetic steel sheets is a method for manufacturing a rotor of a rotating electrical machine that rotates about a central axis, the first step of laminating a plurality of magnetic steel plates having openings in the axial direction, and a plurality of methods
  • the exemplary present invention it is possible to provide a technique that makes it possible to easily and inexpensively manufacture a rotor in which a magnet is embedded. Further, according to the exemplary present invention, it is possible to provide a rotating electrical machine that can be manufactured easily and at low cost.
  • FIG. 1 is a schematic cross-sectional view of a rotating electrical machine according to an embodiment of the present invention.
  • FIG. 2 is a schematic plan view of a magnetic steel plate included in the rotor according to the embodiment of the present invention.
  • FIG. 3 is a schematic plan view of a rotor core included in the rotor according to the embodiment of the present invention.
  • FIG. 4 is a schematic sectional view taken along the line XX in FIG.
  • FIG. 5 is a schematic diagram for explaining the relationship between the magnet and the fixed portion in the rotor according to the embodiment of the present invention.
  • FIG. 6 is a schematic diagram for explaining a first modification of the rotor according to the embodiment of the present invention.
  • FIG. 1 is a schematic cross-sectional view of a rotating electrical machine according to an embodiment of the present invention.
  • FIG. 2 is a schematic plan view of a magnetic steel plate included in the rotor according to the embodiment of the present invention.
  • FIG. 3 is a schematic plan view of a
  • FIG. 7 is a schematic diagram for explaining a second modification of the rotor according to the embodiment of the invention.
  • FIG. 8 is a schematic diagram for explaining a third modification of the rotor according to the embodiment of the present invention.
  • FIG. 9 is a schematic diagram for explaining a fourth modification of the rotor according to the embodiment of the invention.
  • the extending direction of the central axis A of the rotating electrical machine shown in FIG. 1 is simply referred to as “axial direction”, and the radial direction and the circumferential direction around the central axis A of the rotating electrical machine are simply “radial direction”. And called “circumferential direction”.
  • the directions that coincide with the axial direction, the radial direction, and the circumferential direction of the rotating electrical machine when incorporated in the rotating electrical machine are simply referred to as “axial direction”, “radial direction”, and “circumferential direction”. I will decide.
  • the axial direction when the rotating electrical machine is arranged in the direction shown in FIG. 1 is defined as the vertical direction.
  • the vertical direction is simply a name used for explanation, and does not limit the actual positional relationship or direction.
  • FIG. 1 is a schematic cross-sectional view of a rotating electrical machine 1 according to an embodiment of the present invention.
  • FIG. 1 is a cross-sectional view taken along a cut surface including the central axis A of the rotating electrical machine 1.
  • the rotating electrical machine 1 includes a rotor 10, a stator 20, and a casing 30.
  • the casing 30 includes a casing body 31 and a casing cover 32.
  • the casing body 31 is a bottomed cylindrical member having an opening 31a on the upper side in the axial direction.
  • the casing body 31 accommodates the rotor 10 and the stator 20.
  • the casing cover 32 is a lid that closes the opening 31 a of the casing body 31.
  • the rotor 10 rotates about the central axis A.
  • the rotor 10 has a shaft 11.
  • the shaft 11 is disposed at the rotation center of the rotor 10.
  • the shaft 11 is a columnar member extending in the axial direction.
  • the shaft 11 is rotatably supported by an upper bearing 33a and a lower bearing 33b that are arranged with an interval in the axial direction.
  • the upper bearing 33 a is held by the casing cover 32.
  • the lower bearing 33 b is held at the bottom of the casing body 31.
  • the two bearings 33a and 33b are ball bearings, but the type of bearing is not limited to a ball bearing, and may be a sleeve bearing or the like.
  • the upper end portion of the shaft 11 protrudes upward from the casing cover 32.
  • the protruding portion of the shaft 11 is used as an output shaft.
  • the rotor 10 has a rotor core 12 and a magnet 13.
  • the rotor core 12 has a cylindrical shape and is arranged on the outer side in the radial direction of the shaft 11.
  • the rotor core 12 has a configuration in which a plurality of magnetic steel plates 120 are laminated in the axial direction.
  • the magnetic steel plate 120 is made of, for example, a silicon steel plate.
  • the rotor core 12 has a shaft hole 12a extending in the axial direction at the center.
  • the shaft 11 is inserted into the shaft hole 12a.
  • the rotor core 12 has a through hole 12b penetrating in the axial direction.
  • the through hole 12 b is disposed in the vicinity of the outer edge of the rotor core 12.
  • a plurality of through holes 12b are arranged in the circumferential direction.
  • the magnet 13 is inserted into the through hole 12b.
  • the magnet 13 is fixed in the through hole 12b.
  • a method for fixing the magnet 13 will be described later.
  • the magnet 13 is a permanent magnet for a field, and may be, for example, a sintered magnet or a bonded magnet.
  • a plurality of through holes 12 b are arranged in the circumferential direction, and the rotor 10 has a plurality of magnets 13.
  • a field magnet 13 is embedded in the rotor 10.
  • the rotating electrical machine 1 of the present embodiment is an IPM type rotating electrical machine.
  • the stator 20 is an armature of the rotating electrical machine 1.
  • the stator 20 is provided in a substantially annular shape, and is disposed on the radially outer side of the rotor 10.
  • the stator 20 is fixed to the casing body 31.
  • the stator 20 includes a stator core 21, a coil 22, and an insulator 23.
  • the stator core 21 is a laminated steel plate in which magnetic steel plates such as silicon steel plates are laminated in the axial direction.
  • the stator core 21 includes an annular core back 211 and a plurality of teeth 212 protruding radially inward from the core back 211.
  • the coil 22 is wound around each tooth 212 via the insulator 23.
  • the insulator 23 is an insulating member that electrically insulates the stator core 21 and the coil 22 from each other.
  • FIG. 2 is a schematic plan view of the magnetic steel plate 120 included in the rotor 10 according to the embodiment of the present invention.
  • the magnetic steel plate 120 has a circular first opening 120a at the center and is annular.
  • the first opening 120a penetrates the magnetic steel plate 120 in the axial direction.
  • the magnetic steel plate 120 has a plurality of rectangular second openings 120b in the vicinity of the outer edge.
  • the second opening 120b penetrates the magnetic steel plate 120 in the axial direction.
  • the second opening 120b has a longitudinal direction in the circumferential direction.
  • the plurality of second openings 120b are arranged at equal intervals in the circumferential direction. In the present embodiment, the number of the plurality of second openings 120b is eight.
  • the magnetic steel plate 120 has a plurality of third openings 120c arranged at equal intervals in the circumferential direction between the first opening 120a and the second opening 120b.
  • the third opening 120c has a trapezoidal shape and penetrates the magnetic steel sheet 120 in the axial direction.
  • the third opening 120c is provided for the purpose of reducing the weight of the rotor core 12, for example, but may not be provided depending on circumstances.
  • the shaft hole 12a is formed by the plurality of first openings 120a overlapping with the lamination of the plurality of magnetic steel plates 120.
  • a plurality of second openings 120b overlap to form the through hole 12b.
  • the through hole 12b has a longitudinal direction in the circumferential direction.
  • the plurality of through holes 12b are arranged at equal intervals in the circumferential direction.
  • the number of the plurality of through holes 12b is eight. Since the magnets 13 are inserted into the respective through holes 12b, the number of the magnets 12 is also eight.
  • the number of the through-holes 12b and the magnets 12 of this embodiment is an illustration, and may be made into another number.
  • FIG. 3 is a schematic plan view of the rotor core 12 included in the rotor 10 according to the embodiment of the present invention.
  • FIG. 3 shows a state in which the magnet 13 is inserted into the through hole 12b and fixed.
  • FIG. 4 is a schematic sectional view taken along the line XX in FIG.
  • the rotor core 12 has, on at least one side in the axial direction, a fixing portion 14 in which at least one magnetic steel plate 120 including the outermost magnetic steel plate 120 is plastically deformed.
  • the magnet 13 is fixed by the fixing portion 14.
  • the fixing portion 14 a part of the inner wall of the through hole 12 b protrudes toward the magnet 13 due to plastic deformation of the magnetic steel plate 120. For this reason, the width
  • the fixed portion 14 is preferably in contact with the magnet 13. According to this configuration, it is possible to omit adding a part for fixing the magnet 13 or applying an adhesive to fix the magnet 13. For this reason, the rotor 10 of this embodiment can be manufactured simply and at low cost. Further, according to this configuration, the rotating electrical machine 1 in which the magnet 13 embedded in the rotor 10 hardly moves and the magnetic characteristics are stable can be manufactured easily and at low cost.
  • the rotor core 12 has fixed portions 14 on the upper and lower sides in the axial direction.
  • the fixing portion 14 may be provided on only one of the upper side and the lower side in the axial direction.
  • only one upper magnetic steel plate 120 is plastically deformed in the axially upper fixed portion 14, and only one lower magnetic steel plate 120 is in the axially lower fixed portion 14. It is plastically deformed.
  • the number of the magnetic steel plates 120 constituting the fixed portion 14 increases, the magnetic characteristics of the rotor core 12 may be deteriorated. For this reason, it is preferable that the number of the magnetic steel plates 120 constituting the fixing portion 14 is one at the outermost end or two at the outermost end and one adjacent thereto.
  • the magnet 13 is caulked and fixed by the fixing portion 14.
  • the fixing portion 14 is caulked in the radial direction. Specifically, the fixing portion 14 is crushed by applying a radially inward force to the radially outer end face of the magnetic steel plate 120.
  • the fixing portion 14 projects a part of the inner wall of the through hole 12b radially inward. In other words, the radial width of the through hole 12b is narrowed at the place where the fixing portion 14 is provided.
  • the fixing portion 14 fixes the magnet 13 by pressing it from the radial direction.
  • the magnet 13 is in close contact with the fixed portion 14, and the possibility that the magnet 13 moves in the axial direction can be reduced even when vibration or the like occurs.
  • the fixing portion 14 is provided in the central portion in the longitudinal direction of the through hole 12 b in plan view. According to this, it can avoid that the fixing
  • the configuration shown in FIG. 3 is merely an example, and the fixing portion 14 may be provided at a position shifted from the central portion in the longitudinal direction of the through hole 12b.
  • fixed part 14 is provided with respect to each magnet 13, this is an illustration.
  • a plurality of fixing portions 14 may be provided for each magnet 13.
  • the fixing portion 14 is a portion where the distance between the through hole 12b and the outer edge 12c of the rotor core 12 radially outside the through hole 12b is the longest.
  • the fixing portion 14 is formed by caulking a portion of the rotor core 12 where the thickness is thickest on the radially outer side from the through hole 12b.
  • the axial length of the magnet 13 is shorter than the axial length of the rotor core 12. For this reason, the magnet 13 inserted into the through hole 12 b can be retracted with respect to the upper end surface and the lower end surface in the axial direction of the rotor core 12. According to this configuration, the magnet 13 can be fixed by contacting only the axial end portion of the magnet 13 with the fixing portion 14. For this reason, the part with a strong magnetic force of the magnet 13 can be utilized appropriately, and the fall of the magnetic characteristic of the rotor 10 can be suppressed.
  • the axial length of the magnet 13 is preferably in a range where contact between the magnet 13 and the fixed portion 14 can be obtained.
  • FIG. 5 is a schematic diagram for explaining the relationship between the magnet 13 and the fixed portion 14 in the rotor 10 according to the embodiment of the present invention.
  • the magnet 13 has a chamfered portion 13a at an end portion in the axial direction.
  • the magnet 13 has chamfered portions 13a at the upper and lower end portions in the axial direction.
  • the chamfered portion 13a is a portion where processing for removing a sharp portion of the magnet 13 has been performed.
  • the chamfered portion 13a is rounded with a rounded corner.
  • the chamfered portion 13a may be a C chamfer that forms a surface that forms an angle of 45 ° with respect to the end surface in the axial direction, instead of the R chamfer.
  • fixed part 14 is contacting the chamfer 13a.
  • the chamfered portion 13a has a width in the axial direction.
  • the fixing portion 14 is designed to come into contact with the axial center position of the chamfered portion 13a.
  • the method for manufacturing the rotor 10 includes a first step of laminating a plurality of magnetic steel plates 120 having the second openings 120b in the axial direction.
  • the magnetic steel plate 120 having the second opening 120b is formed by punching, for example.
  • the magnetic steel sheet 120 has the first opening 120a and the third opening 120c in addition to the second opening 120b as described above.
  • the number of magnetic steel plates 120 to be stacked is not particularly limited, and is determined according to required magnetic characteristics and the like.
  • the shapes of the magnetic steel plates 120 stacked in the axial direction are all the same.
  • the direction of each magnetic steel plate 120 is aligned in the same direction, and a plurality of magnetic steel plates 120 are laminated.
  • the laminated magnetic steel plates 120 are integrated by, for example, caulking and fixing.
  • the method for manufacturing the rotor 10 includes a second step of inserting the magnet 13 into the through hole 12b formed by overlapping a plurality of second openings 120b with the lamination of the plurality of magnetic steel plates 120.
  • a plurality of through holes 12b are provided at equal intervals in the circumferential direction.
  • a magnet 13 is inserted into each of the plurality of through holes 12b.
  • the magnet 13 is not magnetized at this point.
  • the magnet 13 magnetized at this time may be inserted into the through hole 12b.
  • a jig for adjusting the height position is used so that the height position of the magnet 13 inserted into the through hole 12b is an appropriate height position.
  • the rotor manufacturing method includes a third step of fixing the magnet 13 by plastically deforming at least one magnetic steel plate 120 including the outermost magnetic steel plate 120 on at least one side in the axial direction.
  • one magnetic steel sheet 120 positioned at the extreme end is plastically deformed on both the upper side and the lower side in the axial direction.
  • one magnetic steel plate 120 located at the upper end and one magnetic steel plate 120 located at the lower end are plastically deformed by applying a radially inward force to a predetermined portion of the radially outer end surface. Is done.
  • the predetermined locations where the radially inward force is applied are a plurality of locations so that one fixed portion 14 is formed for each magnet 13 in each of the upper and lower axial directions.
  • the plastically deformed magnetic steel plate 120 is pressed against the magnet 13 and the magnets 13 are fixed by caulking.
  • each magnet 13 After each magnet 13 is fixed, each magnet 13 is magnetized. After the magnetization, in the plurality of magnets 13 arranged in the circumferential direction, the magnetic poles on the surface facing the stator core 21 are alternately opposite to each other.
  • the manufacturing process of the rotor 10 also includes a process of fitting the shaft 11 into the shaft hole 12a formed by overlapping a plurality of first openings 120a with the lamination of the plurality of magnetic steel plates 120.
  • the step of fitting the shaft 11 may be performed after the magnet 13 is magnetized, but is not limited to this timing. For example, it may be performed after integrating a plurality of laminated magnetic steel plates 120.
  • a plurality of magnetic steel plates 120 having the same shape are stacked, and a part of the plurality of stacked magnetic steel plates 120 is plastically deformed to fix the magnet 13. That is, according to the method for manufacturing the rotor 10 of the present embodiment, it is possible to omit adding a part for fixing the magnet 13 or applying an adhesive. For this reason, according to the manufacturing method of the rotor 10 of this embodiment, the rotor 10 can be manufactured simply and at low cost.
  • FIG. 6 is a schematic diagram for explaining a first modification of the rotor 10 according to the embodiment of the present invention.
  • the fixing portion 14 is in contact with the chamfered portion 13a.
  • This configuration is exemplary.
  • the fixed portion 14 may be configured to contact the upper end surface 13 b of the magnet 13.
  • FIG. 7 is a schematic diagram for explaining a second modification of the rotor 10 according to the embodiment of the present invention.
  • the fixing portion 14 is caulked in the radial direction.
  • This configuration is exemplary.
  • the fixed portion may be configured to be caulked in the axial direction as indicated by broken line arrows in FIG.
  • the configuration in which the fixing portion 14 is caulked in the radial direction can more reliably fix the magnet 13 than the configuration in which the fixing portion 14 is caulked in the axial direction.
  • FIG. 8 is a schematic diagram for explaining a third modification of the rotor 10 according to the embodiment of the present invention.
  • the magnet 13 embedded in the rotor 10 is configured to have a longitudinal direction in the circumferential direction.
  • This configuration is exemplary.
  • the present invention can be applied to, for example, a configuration in which the magnet 13 embedded in the rotor 10 has a longitudinal direction in the radial direction as shown in FIG. In this case, the position where the fixing portion 14 for fixing the magnet 13 is provided may be changed as appropriate from the position of the embodiment described above.
  • FIG. 9 is a schematic diagram for explaining a fourth modification of the rotor 10 according to the embodiment of the present invention.
  • one magnetic pole is formed by one magnet 13.
  • This configuration is exemplary.
  • one magnetic pole is formed by two magnets 13 arranged in a V shape.
  • the present invention can also be applied to a rotor having a configuration in which one magnetic pole is formed by a plurality of magnets as shown in FIG. In this case, the position where the fixing portion 14 for fixing the magnet 13 is provided may be changed as appropriate from the position of the embodiment described above.
  • the present invention can be widely applied to motors used for home appliances, automobiles, ships, airplanes, trains, and the like.
  • the present invention can be widely applied to generators used for automobiles, electrically assisted bicycles, wind power generation, and the like.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

L'invention concerne un rotor d'une machine dynamoélectrique, le rotor tournant autour d'un arbre central, qui a : un noyau de rotor ayant une pluralité de plaques d'acier magnétique stratifiées dans la direction axiale, et un trou traversant qui traverse dans la direction axiale ; et un aimant inséré dans le trou traversant, le noyau de rotor ayant une section de fixation sur au moins un côté dans la direction axiale, dans laquelle une ou plusieurs plaques d'acier magnétique, dont la plaque d'acier magnétique la plus extrême, sont plastiquement déformées, et l'aimant étant fixé par la section de fixation.
PCT/JP2016/075873 2016-09-02 2016-09-02 Rotor, machine dynamoélectrique, et procédé de fabrication de rotor WO2018042634A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2018536649A JPWO2018042634A1 (ja) 2016-09-02 2016-09-02 ロータ、回転電機、及びロータの製造方法
CN201680088763.3A CN109643920A (zh) 2016-09-02 2016-09-02 转子、旋转电机以及转子的制造方法
PCT/JP2016/075873 WO2018042634A1 (fr) 2016-09-02 2016-09-02 Rotor, machine dynamoélectrique, et procédé de fabrication de rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/075873 WO2018042634A1 (fr) 2016-09-02 2016-09-02 Rotor, machine dynamoélectrique, et procédé de fabrication de rotor

Publications (1)

Publication Number Publication Date
WO2018042634A1 true WO2018042634A1 (fr) 2018-03-08

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PCT/JP2016/075873 WO2018042634A1 (fr) 2016-09-02 2016-09-02 Rotor, machine dynamoélectrique, et procédé de fabrication de rotor

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CN (1) CN109643920A (fr)
WO (1) WO2018042634A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111614177A (zh) * 2020-05-21 2020-09-01 珠海格力电器股份有限公司 转子结构、电机和车辆
WO2022059253A1 (fr) * 2020-09-15 2022-03-24 株式会社 東芝 Rotor de machine électrique tournante et machine électrique tournante

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7234863B2 (ja) * 2019-08-26 2023-03-08 株式会社デンソー 埋込磁石型ロータ

Citations (3)

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Publication number Priority date Publication date Assignee Title
JP2002064951A (ja) * 2000-08-14 2002-02-28 Honda Motor Co Ltd 永久磁石埋め込み型ロータ
JP2007037202A (ja) * 2003-10-31 2007-02-08 Neomax Co Ltd 永久磁石埋め込み型モータ用回転子、その組立方法および組立装置
JP2014003748A (ja) * 2012-06-15 2014-01-09 Asmo Co Ltd ロータ及びロータの製造方法

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Publication number Priority date Publication date Assignee Title
JPH10174326A (ja) * 1996-12-06 1998-06-26 Matsushita Electric Ind Co Ltd 永久磁石埋め込み式の電動機ロータとその製造方法
JP2000354342A (ja) * 1999-06-07 2000-12-19 Mitsubishi Heavy Ind Ltd 磁石モータ製造方法、磁石モータ及び該磁石モータを備えた密閉型圧縮機
JP4666500B2 (ja) * 2005-12-27 2011-04-06 三菱電機株式会社 永久磁石埋込型モータの回転子

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002064951A (ja) * 2000-08-14 2002-02-28 Honda Motor Co Ltd 永久磁石埋め込み型ロータ
JP2007037202A (ja) * 2003-10-31 2007-02-08 Neomax Co Ltd 永久磁石埋め込み型モータ用回転子、その組立方法および組立装置
JP2014003748A (ja) * 2012-06-15 2014-01-09 Asmo Co Ltd ロータ及びロータの製造方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111614177A (zh) * 2020-05-21 2020-09-01 珠海格力电器股份有限公司 转子结构、电机和车辆
WO2022059253A1 (fr) * 2020-09-15 2022-03-24 株式会社 東芝 Rotor de machine électrique tournante et machine électrique tournante

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CN109643920A (zh) 2019-04-16
JPWO2018042634A1 (ja) 2019-08-08

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