WO2017064938A1 - Dynamo-electric machine - Google Patents

Dynamo-electric machine Download PDF

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Publication number
WO2017064938A1
WO2017064938A1 PCT/JP2016/076002 JP2016076002W WO2017064938A1 WO 2017064938 A1 WO2017064938 A1 WO 2017064938A1 JP 2016076002 W JP2016076002 W JP 2016076002W WO 2017064938 A1 WO2017064938 A1 WO 2017064938A1
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WO
WIPO (PCT)
Prior art keywords
holding member
permanent magnet
rotor core
electrical machine
rotating electrical
Prior art date
Application number
PCT/JP2016/076002
Other languages
French (fr)
Japanese (ja)
Inventor
佳宏 松岡
Original Assignee
株式会社エクセディ
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.)
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Publication date
Application filed by 株式会社エクセディ filed Critical 株式会社エクセディ
Priority to CN201680047555.9A priority Critical patent/CN107925286A/en
Publication of WO2017064938A1 publication Critical patent/WO2017064938A1/en

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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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
    • 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
    • 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
    • H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Definitions

  • the present invention relates to a rotating electrical machine.
  • Hybrid cars and electric cars have a rotating electric machine as a power source.
  • hybrid cars and electric cars widely employ IPM (Interior / Permanent / Magnet) motors in which permanent magnets are embedded in a rotor core as rotating electric machines.
  • the rotor core of this IPM motor has a plurality of pairs of receiving holes extending in the axial direction (see Patent Document 1).
  • a permanent magnet is inserted into each of the accommodation holes.
  • the bridge portion between the paired accommodation holes is preferably as thin as possible in order to suppress magnetic leakage.
  • An object of the present invention is to provide a rotating electrical machine that can make a bridge portion thin while preventing breakage of the bridge portion.
  • a rotating electrical machine includes a stator, a rotor core, a permanent magnet, and a holding member.
  • the rotor core is rotatably arranged on the radially inner side of the stator.
  • the rotor core has at least a pair of housing holes extending in the axial direction and a bridge portion disposed between the pair of housing holes in the circumferential direction.
  • the permanent magnet is accommodated in the accommodation hole.
  • the holding member is fixed to the rotor core in the accommodation hole and holds the permanent magnet.
  • the holding member has an anchor portion that bites into the rotor core on the radially inner side of the permanent magnet.
  • a part of load which acts on a bridge part can be disperse
  • the holding member includes a first holding member and a second holding member that are spaced apart from each other in the circumferential direction.
  • the permanent magnet is disposed between the first holding member and the second holding member.
  • the first holding member has a first anchor portion.
  • the first anchor portion extends toward the second holding member on the radially inner side of the permanent magnet and bites into the rotor core.
  • the second holding member has a second anchor portion. The second anchor portion extends toward the first holding member on the radially inner side of the permanent magnet and bites into the rotor core.
  • the holding member is made of a nonmagnetic metal.
  • the holding member has a cooling channel configured to allow the coolant to flow.
  • the bridge portion can be made thin while preventing damage to the bridge portion.
  • the front view of a rotary electric machine The front view of a rotor core. The enlarged view of a rotor.
  • the axial direction indicates the direction in which the rotation axis extends.
  • the radial direction indicates the radial direction of a circle around the rotation axis.
  • the circumferential direction indicates the circumferential direction of a circle around the rotation axis.
  • the rotating electrical machine 100 includes a stator 1 and a rotor 2.
  • a rotor 2 is rotatably disposed inside the stator 1 in the radial direction.
  • the rotating electrical machine 100 functions as, for example, a motor.
  • the rotating electrical machine 100 is specifically an IPM (Interior Permanent Magnet) motor.
  • the stator 1 has a substantially cylindrical shape.
  • the stator 1 has a stator core 11 and a stator coil 12 wound around the stator core 11.
  • the stator core 11 is formed by laminating a plurality of electromagnetic steel plates in the axial direction.
  • the rotor 2 includes a rotor core 21, a plurality of permanent magnets 22, and a plurality of holding members 23.
  • the rotor 2 is configured to be rotatable about the rotation axis O on the radially inner side of the stator 1.
  • the rotor core 21 is substantially cylindrical and has a mounting hole 211 extending in the axial direction. An output shaft is attached to the attachment hole 211.
  • the rotor core 21 is formed by laminating a plurality of electromagnetic steel plates in the axial direction.
  • the rotor core 21 is disposed so as to be rotatable about the rotation axis O on the radially inner side of the stator 1.
  • FIG. 2 is a front view showing the rotor core 21.
  • the rotor core 21 has a plurality of pairs of accommodation holes 212 and a plurality of bridge portions 213.
  • Each accommodation hole 212 extends in the axial direction.
  • the respective accommodation holes 212 are arranged at intervals in the circumferential direction.
  • the accommodation hole pair 210 which became a pair via the bridge part 213 is arrange
  • Each accommodation hole 212 is arranged at the outer peripheral end of the rotor core 21.
  • the two accommodation holes 212 that are paired are arranged at intervals in the circumferential direction.
  • a bridge portion 213 is disposed between the two accommodation holes 212.
  • the bridge portion 213 extends in the radial direction.
  • the pair of accommodation holes 212 are arranged in a V shape when viewed in the axial direction.
  • FIG. 3 is an enlarged view showing details of the rotor 2. As shown in FIG. 3, each permanent magnet 22 is accommodated in the accommodation hole 212. Each permanent magnet 22 extends in the axial direction. The pair of permanent magnets 22 are arranged in a V shape when viewed in the axial direction.
  • the holding member 23 is fixed to the rotor core 21 in the housing portion 223. Specifically, the holding member 23 is fixed to the rotor core 21 in the housing portion 223 by fitting in the housing portion 223. The holding member 23 holds the permanent magnet 22.
  • the holding member 23 includes a first holding member 231 and a second holding member 232.
  • the 1st holding member 231 and the 2nd holding member 232 are arrange
  • the first holding member 231 is disposed on the bridge portion 213 side in the accommodation hole 212.
  • the second holding member 232 is disposed at a position away from the bridge portion 213 in the accommodation hole 212.
  • the permanent magnet 22 is disposed between the first holding member 231 and the second holding member 232.
  • the first holding member 231 includes a first holding main body portion 2311 and a first anchor portion 2312.
  • the first holding main body portion 2311 and the first anchor portion 2312 are integrally configured by one member.
  • the first holding main body portion 2311 is in contact with the first side surface of the permanent magnet 22 on the bridge portion 213 side.
  • the first holding main body 2311 extends in the radial direction.
  • the first anchor portion 2312 bites into the rotor core 21 on the inner side in the radial direction than the permanent magnet 22. Specifically, the first anchor portion 2312 extends from the radially inner end portion of the first holding main body portion 2311 toward the second holding member 232 side. That is, the first anchor part 2312 extends in a direction away from the bridge part 213. Specifically, the first anchor portion 2312 extends toward the second holding member 232 from the surface that contacts the permanent magnet 22 of the first holding main body portion 2311.
  • the first holding member 231 has a first support portion 2313.
  • the first support portion 2313 is configured integrally with the first holding main body portion 2311.
  • the first support portion 2313 supports the permanent magnet 22 from the outside in the radial direction.
  • the first support portion 2313 extends from the radially outer end portion of the first holding body portion 2311 toward the second holding member 232. That is, the first support portion 2313 extends in substantially the same direction as the first anchor portion 2312.
  • the second holding member 232 includes a second holding main body portion 2321 and a second anchor portion 2322.
  • the 2nd holding main-body part 2321 and the 2nd anchor part 2322 are comprised integrally by one member.
  • the second holding main body portion 2321 is in contact with the second side surface opposite to the first side surface of the permanent magnet 22.
  • the second holding main body portion 2321 extends in the radial direction.
  • the second anchor portion 2322 bites into the rotor core 21 on the inner side in the radial direction than the permanent magnet 22. Specifically, the second anchor portion 2322 extends from the radially inner end of the second holding main body portion 2321 to the first holding member 231 side. That is, the second anchor portion 2322 extends toward the bridge portion 213. Specifically, the second anchor portion 2322 extends toward the first holding member 231 from the surface of the second holding main body portion 2321 that contacts the permanent magnet 22.
  • the second holding member 232 has a second support portion 2323.
  • the second support portion 2323 supports the permanent magnet 22 from the outside in the radial direction.
  • the second support portion 2323 extends from the radially outer end portion of the second holding main body portion 2321 toward the first holding member 231. That is, the second support portion 2323 extends in substantially the same direction as the second anchor portion 2322.
  • the second holding member 232 has a cooling channel 2324.
  • the cooling flow path 2324 extends in the axial direction. By flowing cooling oil (an example of a refrigerant) through the cooling flow path 2324, the permanent magnet 22 in contact with the second holding member 232 can be cooled.
  • the first holding member 231 and the second holding member 232 are preferably made of a nonmagnetic metal. Specifically, the first and second holding members 231 and 232 are formed of at least one selected from the group consisting of aluminum alloys.
  • the permanent magnet 22 is held by the first holding member 231 and the second holding member 232. For this reason, even if the rotor 2 rotates and a centrifugal force acts on the permanent magnet 22, the load applied to the bridge portion 213 can be reduced. For example, since the load is applied to the portions where the first and second anchor portions 2312 and 2322 of the first and second holding members 231 and 232 bite, the load applied to the bridge portion 213 can be reduced. . Thus, since the load applied to the bridge portion 213 is reduced, the bridge portion 213 can be made thin.
  • the holding member 23 is configured by two members, the first holding member 231 and the second holding member 232, but the configuration of the holding member 23 is not limited to this.
  • the holding member 23 may be constituted by one member or may be constituted by three or more members.
  • the second holding member 232 has the cooling flow path 2324, but the first holding member 231 may have the cooling flow path, or the first and second holding members 231, 232. Both of them may have a cooling channel, and the first and second holding members 231 and 232 may not have a cooling channel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

This dynamo-electric machine (100) is provided with a stator (1), a rotor core (21), a permanent magnet (22) and a holding member (23). The rotor core (21) comprises at least a pair of housing holes extending in the axial direction and a bridge part that is arranged between the pair of housing holes in the radial direction. The permanent magnet (22) is contained in a housing hole. The holding member (23) is affixed to the rotor core (21) and holds the permanent magnet (22) within the housing hole.

Description

回転電機Rotating electric machine
　本発明は、回転電機に関するものである。 The present invention relates to a rotating electrical machine.
　ハイブリッドカー及び電気自動車は、動力源として回転電機を有している。なお、ハイブリッドカー及び電気自動車は、回転電機として、ロータコア内に永久磁石が埋め込まれたＩＰＭ（Interior Permanent Magnet）モータを広く採用している。このＩＰＭモータのロータコアは、軸方向に延びる複数対の収容孔を有している（特許文献１参照）。この各収容孔内に永久磁石が挿入されている。この対となった収容孔の間のブリッジ部は、磁気漏洩を抑制するために、なるべく細いことが好ましい。 Hybrid cars and electric cars have a rotating electric machine as a power source. Note that hybrid cars and electric cars widely employ IPM (Interior / Permanent / Magnet) motors in which permanent magnets are embedded in a rotor core as rotating electric machines. The rotor core of this IPM motor has a plurality of pairs of receiving holes extending in the axial direction (see Patent Document 1). A permanent magnet is inserted into each of the accommodation holes. The bridge portion between the paired accommodation holes is preferably as thin as possible in order to suppress magnetic leakage.
特開２０１４－６４４７１号公報JP 2014-64471 A
　ロータが回転することによって永久磁石に遠心力が作用すると、ブリッジ部に負荷が掛かる。この負荷にブリッジ部が耐えられるよう、ある程度ブリッジ部を太くしてブリッジ部の強度を上げる必要がある。このように、ブリッジ部の破損などを防止するため、ブリッジ部を細くすることができないという問題がある。 When the centrifugal force acts on the permanent magnet due to the rotation of the rotor, a load is applied to the bridge portion. In order for the bridge portion to withstand this load, it is necessary to increase the strength of the bridge portion by thickening the bridge portion to some extent. Thus, there is a problem that the bridge portion cannot be thinned in order to prevent damage to the bridge portion.
　本発明の課題は、ブリッジ部の破損を防止しつつブリッジ部を細くすることができる回転電機を提供することである。 An object of the present invention is to provide a rotating electrical machine that can make a bridge portion thin while preventing breakage of the bridge portion.
　本発明のある側面に係る回転電機は、ステータと、ロータコアと、永久磁石と、保持部材とを備えている。ロータコアは、ステータの径方向内側において回転可能に配置されている。ロータコアは、軸方向に延びる少なくとも一対の収容孔、及び周方向において前記一対の収容孔の間に配置されるブリッジ部、を有している。永久磁石は、収容孔内に収容されている。保持部材は、収容孔内においてロータコアに固定され、永久磁石を保持する。 A rotating electrical machine according to an aspect of the present invention includes a stator, a rotor core, a permanent magnet, and a holding member. The rotor core is rotatably arranged on the radially inner side of the stator. The rotor core has at least a pair of housing holes extending in the axial direction and a bridge portion disposed between the pair of housing holes in the circumferential direction. The permanent magnet is accommodated in the accommodation hole. The holding member is fixed to the rotor core in the accommodation hole and holds the permanent magnet.
　この構成によれば、保持部材によって永久磁石は保持されているため、永久磁石に作用する遠心力によるブリッジ部への負荷が軽減される。このため、ブリッジ部の破損を防止しつつブリッジ部を細くすることができる。 According to this configuration, since the permanent magnet is held by the holding member, the load on the bridge portion due to the centrifugal force acting on the permanent magnet is reduced. For this reason, a bridge part can be made thin, preventing damage to a bridge part.
　好ましくは、保持部材は、永久磁石よりも径方向内側において、ロータコアに食い込むアンカー部を有する。この構成によれば、ブリッジ部に作用する負荷の一部をアンカー部が食い込む部分に分散することができる。 Preferably, the holding member has an anchor portion that bites into the rotor core on the radially inner side of the permanent magnet. According to this structure, a part of load which acts on a bridge part can be disperse | distributed to the part which an anchor part bites into.
　好ましくは、保持部材は、互いに周方向において間隔をあけて配置された第１保持部材及び第２保持部材を有する。そして、永久磁石は、第１保持部材と第２保持部材との間に配置される。 Preferably, the holding member includes a first holding member and a second holding member that are spaced apart from each other in the circumferential direction. The permanent magnet is disposed between the first holding member and the second holding member.
　好ましくは、第１保持部材は、第１アンカー部を有する。第１アンカー部は、永久磁石よりも径方向内側において、第２保持部材側に延びてロータコアに食い込む。また、第２保持部材は、第２アンカー部を有する。第２アンカー部は、永久磁石よりも径方向内側において、第１保持部材側に延びてロータコアに食い込む。 Preferably, the first holding member has a first anchor portion. The first anchor portion extends toward the second holding member on the radially inner side of the permanent magnet and bites into the rotor core. The second holding member has a second anchor portion. The second anchor portion extends toward the first holding member on the radially inner side of the permanent magnet and bites into the rotor core.
　好ましくは、保持部材は、非磁性体金属製である。 Preferably, the holding member is made of a nonmagnetic metal.
　好ましくは、保持部材は、冷媒が流れるように構成された冷却流路を有する。 Preferably, the holding member has a cooling channel configured to allow the coolant to flow.
　本発明によれば、ブリッジ部の破損を防止しつつブリッジ部を細くすることができる。 According to the present invention, the bridge portion can be made thin while preventing damage to the bridge portion.
回転電機の正面図。The front view of a rotary electric machine. ロータコアの正面図。The front view of a rotor core. ロータの拡大図。The enlarged view of a rotor.
　以下、本発明に係る回転電機の実施形態について図面を参照しつつ説明する。なお、以下の説明において、軸方向とは、回転軸が延びる方向を示す。径方向とは、回転軸を中心とした円の径方向を示す。周方向とは、回転軸を中心とした円の周方向を示す。 Hereinafter, embodiments of a rotating electrical machine according to the present invention will be described with reference to the drawings. In the following description, the axial direction indicates the direction in which the rotation axis extends. The radial direction indicates the radial direction of a circle around the rotation axis. The circumferential direction indicates the circumferential direction of a circle around the rotation axis.
　［回転電機］
　図１に示すように、回転電機１００は、ステータ１と、ロータ２とを備えている。ステータ１の径方向内側にロータ２が回転可能に配置されている。この回転電機１００は、例えばモータとして機能する。なお、回転電機１００は、具体的にはＩＰＭ（Ｉｎｔｅｒｉｏｒ　Ｐｅｒｍａｎｅｎｔ　Ｍａｇｎｅｔ）モータである。 [Rotating electric machine]
As shown in FIG. 1, the rotating electrical machine 100 includes a stator 1 and a rotor 2. A rotor 2 is rotatably disposed inside the stator 1 in the radial direction. The rotating electrical machine 100 functions as, for example, a motor. The rotating electrical machine 100 is specifically an IPM (Interior Permanent Magnet) motor.
　［ステータ］
　ステータ１は、略円筒形状である。ステータ１は、ステータコア１１と、ステータコア１１に巻かれたステータコイル１２とを有している。ステータコア１１は、複数枚の電磁鋼板を軸方向に積層してなる。 [Stator]
The stator 1 has a substantially cylindrical shape. The stator 1 has a stator core 11 and a stator coil 12 wound around the stator core 11. The stator core 11 is formed by laminating a plurality of electromagnetic steel plates in the axial direction.
　［ロータ］
　ロータ２は、ロータコア２１と、複数の永久磁石２２と、複数の保持部材２３とを備えている。ロータ２は、ステータ１の径方向内側において、回転軸Ｏを中心に回転可能に構成されている。 [Rotor]
The rotor 2 includes a rotor core 21, a plurality of permanent magnets 22, and a plurality of holding members 23. The rotor 2 is configured to be rotatable about the rotation axis O on the radially inner side of the stator 1.
　［ロータコア］
　ロータコア２１は、略円筒形状であって、軸方向に延びる取付孔２１１を有している。この取付孔２１１に出力軸が取り付けられる。ロータコア２１は、複数枚の電磁鋼板を軸方向に積層してなる。ロータコア２１は、ステータ１の径方向内側において、回転軸Ｏを中心に回転可能に配置されている。 [Rotor core]
The rotor core 21 is substantially cylindrical and has a mounting hole 211 extending in the axial direction. An output shaft is attached to the attachment hole 211. The rotor core 21 is formed by laminating a plurality of electromagnetic steel plates in the axial direction. The rotor core 21 is disposed so as to be rotatable about the rotation axis O on the radially inner side of the stator 1.
　図２はロータコア２１を示す正面図である。図２に示すように、ロータコア２１は、複数対の収容孔２１２と、複数のブリッジ部２１３と、を有している。各収容孔２１２は、軸方向に延びている。各収容孔２１２は、周方向において、互いに間隔をあけて配置されている。詳細には、ブリッジ部２１３を介して対となった収容孔対２１０が、隣り合う収容孔対２１０と間隔をあけて配置されている。また、各収容孔２１２は、ロータコア２１の外周端部に配置されている。 FIG. 2 is a front view showing the rotor core 21. As shown in FIG. 2, the rotor core 21 has a plurality of pairs of accommodation holes 212 and a plurality of bridge portions 213. Each accommodation hole 212 extends in the axial direction. The respective accommodation holes 212 are arranged at intervals in the circumferential direction. In detail, the accommodation hole pair 210 which became a pair via the bridge part 213 is arrange | positioned at intervals with the adjacent accommodation hole pair 210. As shown in FIG. Each accommodation hole 212 is arranged at the outer peripheral end of the rotor core 21.
　対となった２つの収容孔２１２は、周方向において互いに間隔をあけて配置されている。この２つの収容孔２１２の間にブリッジ部２１３が配置されている。ブリッジ部２１３は、径方向に延びている。なお、一対の収容孔２１２は、軸方向視において、Ｖ字状に配置されている。 The two accommodation holes 212 that are paired are arranged at intervals in the circumferential direction. A bridge portion 213 is disposed between the two accommodation holes 212. The bridge portion 213 extends in the radial direction. The pair of accommodation holes 212 are arranged in a V shape when viewed in the axial direction.
　［永久磁石］
　図３はロータ２の詳細を示す拡大図である。図３に示すように、各永久磁石２２は、収容孔２１２内に収容されている。各永久磁石２２は、軸方向に延びている。軸方向視において、一対の永久磁石２２は、Ｖ字状に配置されている。 [permanent magnet]
FIG. 3 is an enlarged view showing details of the rotor 2. As shown in FIG. 3, each permanent magnet 22 is accommodated in the accommodation hole 212. Each permanent magnet 22 extends in the axial direction. The pair of permanent magnets 22 are arranged in a V shape when viewed in the axial direction.
　［保持部材］
　保持部材２３は、収容部２２３内においてロータコア２１に固定されている。詳細には、保持部材２３は、収容部２２３内に嵌合することで、保持部材２３は収容部２２３内でロータコア２１に固定されている。保持部材２３は、永久磁石２２を保持している。 [Holding member]
The holding member 23 is fixed to the rotor core 21 in the housing portion 223. Specifically, the holding member 23 is fixed to the rotor core 21 in the housing portion 223 by fitting in the housing portion 223. The holding member 23 holds the permanent magnet 22.
　詳細には、保持部材２３は、第１保持部材２３１と、第２保持部材２３２とを有している。第１保持部材２３１と、第２保持部材２３２とは、周方向において互いに間隔をあけて配置されている。第１保持部材２３１は、収容孔２１２内において、ブリッジ部２１３側に配置されている。第２保持部材２３２は、収容孔２１２内において、ブリッジ部２１３から離れた位置に配置されている。この第１保持部材２３１と第２保持部材２３２との間に、永久磁石２２が配置されている。 Specifically, the holding member 23 includes a first holding member 231 and a second holding member 232. The 1st holding member 231 and the 2nd holding member 232 are arrange | positioned at intervals in the circumferential direction. The first holding member 231 is disposed on the bridge portion 213 side in the accommodation hole 212. The second holding member 232 is disposed at a position away from the bridge portion 213 in the accommodation hole 212. The permanent magnet 22 is disposed between the first holding member 231 and the second holding member 232.
　［第1保持部材］
　第１保持部材２３１は、第１保持本体部２３１１と、第１アンカー部２３１２とを有する。第１保持本体部２３１１と第１アンカー部２３１２とは、１つの部材によって一体的に構成されている。第１保持本体部２３１１は、永久磁石２２のブリッジ部２１３側の第１側面と接触している。第１保持本体部２３１１は、径方向に延びている。 [First holding member]
The first holding member 231 includes a first holding main body portion 2311 and a first anchor portion 2312. The first holding main body portion 2311 and the first anchor portion 2312 are integrally configured by one member. The first holding main body portion 2311 is in contact with the first side surface of the permanent magnet 22 on the bridge portion 213 side. The first holding main body 2311 extends in the radial direction.
　第１アンカー部２３１２は、永久磁石２２よりも径方向の内側において、ロータコア２１に食い込む。具体的には、第１アンカー部２３１２は、第１保持本体部２３１１の径方向内側端部から第２保持部材２３２側に延びている。すなわち、第１アンカー部２３１２は、ブリッジ部２１３から離れる方向に延びている。詳細には、第１アンカー部２３１２は、第１保持本体部２３１１の永久磁石２２と接触する面から、第２保持部材２３２に向かって延びている。 The first anchor portion 2312 bites into the rotor core 21 on the inner side in the radial direction than the permanent magnet 22. Specifically, the first anchor portion 2312 extends from the radially inner end portion of the first holding main body portion 2311 toward the second holding member 232 side. That is, the first anchor part 2312 extends in a direction away from the bridge part 213. Specifically, the first anchor portion 2312 extends toward the second holding member 232 from the surface that contacts the permanent magnet 22 of the first holding main body portion 2311.
　また、第１保持部材２３１は、第１支持部２３１３を有している。第１支持部２３１３は、第１保持本体部２３１１と一体的に構成されている。第１支持部２３１３は、永久磁石２２を径方向の外側から支持している。第１支持部２３１３は、第１保持本体部２３１１の径方向外側端部から第２保持部材２３２に向かって延びている。すなわち、第１支持部２３１３は、第１アンカー部２３１２と略同じ方向に延びている。 Further, the first holding member 231 has a first support portion 2313. The first support portion 2313 is configured integrally with the first holding main body portion 2311. The first support portion 2313 supports the permanent magnet 22 from the outside in the radial direction. The first support portion 2313 extends from the radially outer end portion of the first holding body portion 2311 toward the second holding member 232. That is, the first support portion 2313 extends in substantially the same direction as the first anchor portion 2312.
　［第２保持部材］
　第２保持部材２３２は、第２保持本体部２３２１と、第２アンカー部２３２２とを有する。第２保持本体部２３２１と第２アンカー部２３２２とは、１つの部材によって一体的に構成されている。第２保持本体部２３２１は、永久磁石２２の第１側面と反対側の第２側面と接触している。第２保持本体部２３２１は、径方向に延びている。 [Second holding member]
The second holding member 232 includes a second holding main body portion 2321 and a second anchor portion 2322. The 2nd holding main-body part 2321 and the 2nd anchor part 2322 are comprised integrally by one member. The second holding main body portion 2321 is in contact with the second side surface opposite to the first side surface of the permanent magnet 22. The second holding main body portion 2321 extends in the radial direction.
　第２アンカー部２３２２は、永久磁石２２よりも径方向の内側において、ロータコア２１に食い込む。具体的には、第２アンカー部２３２２は、第２保持本体部２３２１の径方向内側端部から第１保持部材２３１側に延びている。すなわち、第２アンカー部２３２２は、ブリッジ部２１３に向かって延びている。詳細には、第２アンカー部２３２２は、第２保持本体部２３２１の永久磁石２２と接触する面から、第１保持部材２３１に向かって延びている。 The second anchor portion 2322 bites into the rotor core 21 on the inner side in the radial direction than the permanent magnet 22. Specifically, the second anchor portion 2322 extends from the radially inner end of the second holding main body portion 2321 to the first holding member 231 side. That is, the second anchor portion 2322 extends toward the bridge portion 213. Specifically, the second anchor portion 2322 extends toward the first holding member 231 from the surface of the second holding main body portion 2321 that contacts the permanent magnet 22.
　また、第２保持部材２３２は、第２支持部２３２３を有している。第２支持部２３２３は、永久磁石２２を径方向の外側から支持している。第２支持部２３２３は、第２保持本体部２３２１の径方向外側端部から第１保持部材２３１に向かって延びている。すなわち、第２支持部２３２３は、第２アンカー部２３２２と略同じ方向に延びている。 Further, the second holding member 232 has a second support portion 2323. The second support portion 2323 supports the permanent magnet 22 from the outside in the radial direction. The second support portion 2323 extends from the radially outer end portion of the second holding main body portion 2321 toward the first holding member 231. That is, the second support portion 2323 extends in substantially the same direction as the second anchor portion 2322.
　また、第２保持部材２３２は、冷却流路２３２４を有している。冷却流路２３２４は、軸方向に延びている。この冷却流路２３２４内に冷却油（冷媒の一例）を流すことによって、第２保持部材２３２と接する永久磁石２２を冷却することができる。 Further, the second holding member 232 has a cooling channel 2324. The cooling flow path 2324 extends in the axial direction. By flowing cooling oil (an example of a refrigerant) through the cooling flow path 2324, the permanent magnet 22 in contact with the second holding member 232 can be cooled.
　第１保持部材２３１及び第２保持部材２３２は、非磁性体金属製とすることが好ましい。具体的には、第１及び第２保持部材２３１，２３２は、アルミニウム合金よりなる群から選ばれる少なくとも１種によって形成される。 The first holding member 231 and the second holding member 232 are preferably made of a nonmagnetic metal. Specifically, the first and second holding members 231 and 232 are formed of at least one selected from the group consisting of aluminum alloys.
　以上のように構成された回転電機１００によれば、第１保持部材２３１と第２保持部材２３２とによって永久磁石２２を保持している。このため、ロータ２が回転して永久磁石２２に遠心力が作用しても、ブリッジ部２１３に掛かる負荷を低減することができる。例えば、第１及び第２保持部材２３１，２３２の第１及び第２アンカー部２３１２、２３２２が食い込んでいる部分にも負荷が掛かるようになるため、ブリッジ部２１３に掛かる負荷を低減することができる。このようにブリッジ部２１３に掛かる負荷が小さくなるため、ブリッジ部２１３を細くすることができる。 According to the rotating electrical machine 100 configured as described above, the permanent magnet 22 is held by the first holding member 231 and the second holding member 232. For this reason, even if the rotor 2 rotates and a centrifugal force acts on the permanent magnet 22, the load applied to the bridge portion 213 can be reduced. For example, since the load is applied to the portions where the first and second anchor portions 2312 and 2322 of the first and second holding members 231 and 232 bite, the load applied to the bridge portion 213 can be reduced. . Thus, since the load applied to the bridge portion 213 is reduced, the bridge portion 213 can be made thin.
　［変形例］
　以上、本発明の実施形態について説明したが、本発明はこれらに限定されるものではなく、本発明の趣旨を逸脱しない限りにおいて種々の変更が可能である。 [Modification]
As mentioned above, although embodiment of this invention was described, this invention is not limited to these, A various change is possible unless it deviates from the meaning of this invention.
　変形例１
　上記実施形態では、保持部材２３は、第１保持部材２３１と第２保持部材２３２との２つの部材によって構成されていたが、保持部材２３の構成はこれに限定されない。例えば、保持部材２３は、１つの部材によって構成されていてもよいし、３つ以上の部材によって構成されていてもよい。 Modification 1
In the above embodiment, the holding member 23 is configured by two members, the first holding member 231 and the second holding member 232, but the configuration of the holding member 23 is not limited to this. For example, the holding member 23 may be constituted by one member or may be constituted by three or more members.
　変形例２
　上記実施形態では、第２保持部材２３２が冷却流路２３２４を有しているが、第１保持部材２３１が冷却流路を有していてもよいし、第１及び第２保持部材２３１，２３２の両方が冷却流路を有していてもよいし、第１及び第２保持部材２３１，２３２が冷却流路を有していなくてもよい。 Modification 2
In the above embodiment, the second holding member 232 has the cooling flow path 2324, but the first holding member 231 may have the cooling flow path, or the first and second holding members 231, 232. Both of them may have a cooling channel, and the first and second holding members 231 and 232 may not have a cooling channel.

Claims (6)

  1. 　ステータと、
    　軸方向に延びる少なくとも一対の収容孔、及び周方向において前記一対の収容孔の間に配置されるブリッジ部、を有し、前記ステータの径方向内側において回転可能に配置されたロータコアと、
    　前記収容孔内に収容された永久磁石と、
    　前記収容孔内において前記ロータコアに固定され、前記永久磁石を保持する保持部材と、
    を備える、回転電機。
    A stator,
    A rotor core that has at least a pair of housing holes extending in the axial direction, and a bridge portion that is disposed between the pair of housing holes in the circumferential direction, and that is rotatably disposed radially inside the stator;
    A permanent magnet housed in the housing hole;
    A holding member that is fixed to the rotor core in the accommodation hole and holds the permanent magnet;
    A rotating electrical machine.
  2. 　前記保持部材は、前記永久磁石よりも径方向内側において、前記ロータコアに食い込むアンカー部を有する、
    請求項１に記載の回転電機。
    The holding member has an anchor portion that bites into the rotor core at a radially inner side than the permanent magnet.
    The rotating electrical machine according to claim 1.
  3. 　前記保持部材は、互いに周方向において間隔をあけて配置された第１保持部材及び第２保持部材を有し、
    　前記永久磁石は、前記第１保持部材と前記第２保持部材との間に配置される、
    請求項１に記載の回転電機。
    The holding member has a first holding member and a second holding member that are spaced apart from each other in the circumferential direction,
    The permanent magnet is disposed between the first holding member and the second holding member.
    The rotating electrical machine according to claim 1.
  4. 　前記第１保持部材は、前記永久磁石よりも径方向内側において前記第２保持部材側に延びて前記ロータコアに食い込む第１アンカー部を有し、
    　前記第２保持部材は、前記永久磁石よりも径方向内側において前記第１保持部材側に延びて前記ロータコアに食い込む第２アンカー部を有する、
    請求項３に記載の回転電機。
    The first holding member has a first anchor portion that extends toward the second holding member on the radially inner side of the permanent magnet and bites into the rotor core,
    The second holding member has a second anchor portion that extends toward the first holding member on the radially inner side of the permanent magnet and bites into the rotor core.
    The rotating electrical machine according to claim 3.
  5. 　前記保持部材は、非磁性体金属製である、
    請求項１から４のいずれかに記載の回転電機。
    The holding member is made of a nonmagnetic metal.
    The rotating electrical machine according to any one of claims 1 to 4.
  6. 　前記保持部材は、冷媒が流れるように構成された冷却流路を有する、
    請求項１から５のいずれかに記載の回転電機。     The holding member has a cooling flow path configured to allow the refrigerant to flow.
    The rotating electrical machine according to any one of claims 1 to 5.
PCT/JP2016/076002 2015-10-16 2016-09-05 Dynamo-electric machine WO2017064938A1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019009866A (en) * 2017-06-21 2019-01-17 トヨタ自動車株式会社 Rotor of rotary electric machine
CN109617273A (en) * 2017-10-04 2019-04-12 本田技研工业株式会社 The rotor of rotating electric machine
JP2020141468A (en) * 2019-02-27 2020-09-03 トヨタ自動車株式会社 Rotor of rotary electric machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007104888A (en) * 2005-09-07 2007-04-19 Toshiba Corp Rotary electric machine
JP2011147323A (en) * 2010-01-18 2011-07-28 Toyota Motor Corp Rotor for ipm motor, and ipm motor
JP2013524757A (en) * 2010-03-30 2013-06-17 ボルボ テクノロジー コーポレイション Electric machine rotor and electric machine with embedded permanent magnet
JP2014079044A (en) * 2012-10-09 2014-05-01 Denso Corp Method for manufacturing laminated steel plate, and laminated steel plate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007104888A (en) * 2005-09-07 2007-04-19 Toshiba Corp Rotary electric machine
JP2011147323A (en) * 2010-01-18 2011-07-28 Toyota Motor Corp Rotor for ipm motor, and ipm motor
JP2013524757A (en) * 2010-03-30 2013-06-17 ボルボ テクノロジー コーポレイション Electric machine rotor and electric machine with embedded permanent magnet
JP2014079044A (en) * 2012-10-09 2014-05-01 Denso Corp Method for manufacturing laminated steel plate, and laminated steel plate

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019009866A (en) * 2017-06-21 2019-01-17 トヨタ自動車株式会社 Rotor of rotary electric machine
CN109617273A (en) * 2017-10-04 2019-04-12 本田技研工业株式会社 The rotor of rotating electric machine
US10868450B2 (en) 2017-10-04 2020-12-15 Honda Motor Co., Ltd. Rotor of rotary electric machine
CN109617273B (en) * 2017-10-04 2021-08-13 本田技研工业株式会社 Rotor of rotating electric machine
JP2020141468A (en) * 2019-02-27 2020-09-03 トヨタ自動車株式会社 Rotor of rotary electric machine

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