WO2014174552A1 - 回転電機 - Google Patents
回転電機 Download PDFInfo
- Publication number
- WO2014174552A1 WO2014174552A1 PCT/JP2013/002828 JP2013002828W WO2014174552A1 WO 2014174552 A1 WO2014174552 A1 WO 2014174552A1 JP 2013002828 W JP2013002828 W JP 2013002828W WO 2014174552 A1 WO2014174552 A1 WO 2014174552A1
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- WO
- WIPO (PCT)
- Prior art keywords
- rotor
- electrical machine
- rotating electrical
- core
- machine according
- Prior art date
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- 239000000463 material Substances 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 239000000843 powder Substances 0.000 abstract description 11
- 238000003780 insertion Methods 0.000 description 14
- 230000037431 insertion Effects 0.000 description 14
- 239000002184 metal Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 239000004677 Nylon Substances 0.000 description 3
- 239000004809 Teflon Substances 0.000 description 3
- 229920006362 Teflon® Polymers 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 229920006351 engineering plastic Polymers 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 238000010030 laminating Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/16—Centring rotors within the stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
Definitions
- the present invention relates to a rotating electrical machine that uses a permanent magnet as a rotor, and relates to a rotating electrical machine that can improve the workability of rotor insertion and assembly work.
- a rotating electrical machine such as an electric motor equipped with an inner rotor, a stator and a rotor disposed inside the stator face each other across a narrow gap (see Patent Document 1).
- a dedicated jig can be used to insert the rotating portion inside the stator.
- the rotor In a rotating electrical machine in which a permanent magnet is used for the rotor of the inner rotor, the rotor may be attracted to the stator core by the magnetic force of the permanent magnet when the rotor is inserted inside the stator. In that case, the rotor and the stator core may collide with each other, and the inner surface of the stator core may be damaged, resulting in poor workability. Further, metal powder generated when the rotor and the stator iron core collide may cause deterioration in performance of the rotating electrical machine.
- the present invention has been made in view of such circumstances, and an object of the present invention is to improve workability when a rotor is inserted inside a stator in a rotating electrical machine in which a permanent magnet is used for a rotor of an inner rotor. And to suppress the generation of metal powder caused by the collision between the rotor and the stator core.
- a rotating electrical machine includes a shaft extending in a horizontal direction and rotatably supported, a rotor attached to the shaft, and a plurality of rotors rotatably supporting the rotor.
- a substantially circular opening surrounding the outer side of the rotor in the radial direction is formed by forming a gap between the bearing of the rotor and the outer side of the rotor in the radial direction.
- a stator having a laminated stator core; and a frame that supports the bearing and the stator; and the rotor attached to the shaft is axially inserted into the opening of the stator core.
- a rotating electrical machine that can be assembled by insertion, wherein the rotor is inserted into a rotor core in which a plurality of steel plates spread in a direction perpendicular to the axis are laminated in an axial direction, and the rotor core A plurality of permanent magnets;
- a plurality of clamping bolts arranged in such a manner, and a tip clamper on the side inserted first when the rotor is axially inserted into the opening of the stator core among the two clampers. And a sliding portion made of a material softer than the stator core and protruding outward in the radial direction from the tip clamper and the rotor core.
- the workability when the rotor is inserted inside the stator is improved, and the rotor and the stator core are Generation
- production of the metal powder which arises by colliding can be suppressed.
- FIG. 3 is an essential part elevational cross-sectional view showing an upper portion of the rotor tip in the initial stage of the rotor insertion operation and its periphery in the first embodiment of the rotating electrical machine according to the present invention.
- FIG. 3 is a main part vertical sectional view showing the upper end of the rotor tip and its periphery at the end of the rotor insertion work in the first embodiment of the rotating electrical machine according to the present invention.
- It is principal part sectional drawing which shows the rotor tip upper part of the initial stage of the rotor insertion work in 2nd Embodiment of the rotary electric machine which concerns on this invention, and its periphery.
- FIG. 1 is an overall elevation view showing an assembly completion state in a first embodiment of a rotating electrical machine according to the present invention, in which an upper half is a sectional view and a lower half is an outline view.
- FIG. 2 is an overall vertical sectional view showing a state before starting the rotor insertion work in the first embodiment of the rotating electrical machine according to the present invention.
- FIG. 3 is a principal sectional elevational view showing the upper end of the rotor tip and its periphery in the initial stage of the rotor insertion operation in the first embodiment of the rotating electrical machine according to the present invention.
- FIG. 4 is a principal sectional elevational view showing the upper end of the rotor tip and its periphery at the end of the rotor insertion operation in the first embodiment of the rotating electrical machine according to the present invention.
- a stator 12 is attached in a frame 11, and two bearings 13 are supported by the frame 11. ing.
- a shaft 14 extending in the horizontal direction is rotatably supported by the bearing 13.
- a rotor 15 is attached to the outside of the shaft 14.
- the stator 12 has a stator core 16 and a stator coil 17.
- the stator core 16 is configured by laminating a large number of steel plates extending perpendicularly to the rotation axis in the direction of the rotation axis.
- a plurality of slots (not shown) extending in the axial direction are formed in the stator iron core 16, and a stator coil 17 (see FIG. 2) is disposed in these slots.
- the axial ends of the stator coil 17 are connected to each other by a coil end 19.
- a substantially circular opening 20 is formed in the central portion of the stator core 16 in the radial direction, and the rotor 15 is disposed in the opening 20 via a gap in the radial direction.
- the rotor 15 includes a rotor core 21 configured by laminating a plurality of steel plates extending perpendicular to the rotation axis in the direction of the rotation axis, and a plurality of permanent magnets 22 inserted into the rotor core 21. .
- a front end clamper 23 and a rear end clamper 24 are disposed at both ends of the rotor core 21 in the axial direction.
- the front end clamper 23 and the rear end clamper 24 have a disk shape having an opening at the center and extending perpendicularly to the rotation axis, and are thicker than each steel plate constituting the rotor core 21.
- the front end clamper 23 and the rear end clamper 24 are tightened in a direction approaching each other by a plurality of tightening bolts 25 penetrating them and nuts 26 screwed into the tightening bolts 25, and the tightening force causes the rotor core 21 to move.
- a large number of steel plates constituting the plate are fastened together.
- the rotor 15 is inserted into the opening 20 from the axial direction together with the shaft 14 and the bearing 13 and assembled. At this time, the rotor 15 and the like are inserted from the load side end of the frame 11, and the front end clamper 23, which is the anti-load side clamper, becomes the back side.
- the sliding part 30 is attached along the outer periphery of the tip clamper 23.
- the sliding portion 30 is annular, and protrudes radially outward from the outer periphery of the tip clamper 23 and the rotor core 21.
- the sliding portion 30 is softer than the stator core 16 and the coil end 19 so that the stator core 16 and the coil end 19 are not damaged even if the sliding portion 30 comes into contact with the opening 20 of the stator core 16 and the portion that contacts the coil end 19.
- the material has a certain degree of mechanical strength, wear resistance, and heat resistance.
- resin such as engineering plastic, and more specifically, Teflon (trade name), MC nylon (trade name), and the like are preferable.
- the sliding portion 30 protrudes in the axial direction opposite to the stator core 16 (that is, the anti-load side), and a chamfered portion 31 is formed at the tip portion thereof.
- the chamfered portion 31 gradually becomes thinner toward the tip in the axial direction.
- the sliding portion 30 is detachably attached to the tip clamper 23 with a screw 32.
- an external fan 60 is attached in the vicinity of the tip of the shaft 14 on the side opposite to the load, and the outside of the external fan 60 is covered with a fan cover 61.
- the rotor 15 and the like may be taken out of the frame 11 and returned to the frame 11 again for maintenance purposes.
- the axes of the fixed portion and the rotating portion are aligned, and the rotating portion is horizontal in the axial direction. Move to.
- the fan cover 61 is removed from the frame 11 and the external fan 60 is removed from the shaft 14.
- the sliding portion 30 is detachably attached by the screw 32, the sliding portion 30 can be replaced with a new one when the sliding portion 30 is further damaged.
- the tip of the sliding portion 30 is unlikely to collide with the stator core 16, and even in the case of a collision, the stator core 16 or the sliding Damage to the tip of the moving part 30 can be reduced.
- the rotating part can be inserted smoothly.
- the sliding portion 30 is detachably attached to the tip clamper 23 with the screw 32.
- the sliding portion 30 is not necessarily detachable.
- the sliding portion 30 may be attached with an adhesive or coated. May be. Thereby, damage to the stator core 16 and generation of metal powder can be suppressed.
- the sliding portion 30 is made of a softer material than the stator core 16 and the coil end 19, but interference with the coil end 19 occurs when the rotor 15 or the like is inserted into the stator 12.
- the sliding part 30 should just be a material softer than the stator core 16.
- FIG. 5 is an essential part sectional view showing an upper portion of the rotor tip in the initial stage of the rotor insertion operation and its periphery in the second embodiment of the rotating electrical machine according to the present invention.
- FIG. 6 is an essential part sectional view showing the upper end of the rotor tip and its periphery in the final stage of the rotor insertion work in the second embodiment of the rotating electrical machine according to the present invention.
- An internal fan 40 is attached to the opposite side of the rotor core 21 of the front end clamper 23 of the rotating electrical machine of this embodiment, that is, the opposite load side.
- the internal fan 40 is provided so as to protrude in the axial direction on the opposite side of the rotor core 21.
- the internal fan 40 is configured not to protrude outward in the radial direction from the sliding portion 30 and to become smaller in the radial direction toward the tip in the axial direction.
- Other configurations are the same as those in the first embodiment.
- the internal fan 40 can rotate with the rotor 15 to circulate the air in the frame 11 and cool it.
- the stator core 16 and the coil end 19 are Damage and generation of metal powder can be suppressed.
- the tip of the internal fan 40 is tapered, it is possible to suppress the tip of the internal fan 40 from colliding with the stator core 16 and the coil end 19.
- FIG. 7 is an enlarged cross-sectional view of a main part showing an upper end portion of an internal fan in a third embodiment of the rotating electrical machine according to the present invention.
- This embodiment is a modification of the second embodiment, and a chamfered portion 41 is formed at the outer front end of the internal fan 40.
- a buffer portion 42 is formed around the chamfered portion 41.
- the buffer portion 42 is made of a material softer than the stator core 16 and the coil end 19 and has a certain degree of mechanical strength, wear resistance, and heat resistance. For example, it is made of resin such as engineering plastic, and more specifically, Teflon (trade name), MC nylon (trade name), and the like are preferable.
- the buffer portion 42 may be attached to the surface of the internal fan 40 by screwing or bonding, or may be attached by coating.
- FIG. 8 is a vertical sectional view of a main part showing an upper portion of the rotor tip and its periphery in the initial stage of the rotor insertion operation in the fourth embodiment of the rotating electrical machine according to the present invention.
- This embodiment is a modification of the first embodiment, and a guide portion 50 is attached to the tip clamper 23 on the opposite side of the rotor core 21 so as to protrude in the axial direction.
- the guide part 50 has a substantially cylindrical shape whose outer diameter is smaller than the outer diameter of the sliding part 30, and is narrowed toward the tip.
- the guide part 50 is attached to the tip clamper 23 together with the sliding part 30 by a screw 32.
- the stator core does not damage the stator core 16 or the coil end 19 even if it contacts the stator core 16 or the coil end 19.
- the material is softer than 16 and the coil end 19 and has a certain degree of mechanical strength, wear resistance, and heat resistance.
- it is made of resin such as engineering plastic, and more specifically, Teflon (trade name), MC nylon (trade name), and the like are preferable.
- the guide portion 50 protrudes at the tip in the axial direction, when the rotor 15 or the like is inserted into the stator 12, it first collides with the surface of the opening 20 of the stator 12 or the coil end 19.
- the guide part 50 becomes. Since the guide portion 50 is narrowed toward the tip, it can be prevented from colliding with the stator core 16 and the coil end 19 and the inserting operation of the rotating portion becomes smooth. Moreover, even if it contacts with a scale, since the guide part 50 is a material softer than the stator core 16 and the coil end 19, even if this collision exists, damage to the stator core 16 and the coil end 19 can be suppressed. it can. Moreover, generation
- the guide part 50 is detachably attached by the screw 32 similarly to the sliding part 30, the guide part 50 can be replaced with a new one when the guide part 50 is further damaged.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
図1は、本発明に係る回転電機の第1の実施形態における組立完了状態を示す全体立面図であって、上半を断面図で、下半を外形図で示す図である。図2は、本発明に係る回転電機の第1の実施形態における回転子挿入作業開始前の状況を示す全体立断面図である。図3は、本発明に係る回転電機の第1の実施形態における回転子挿入作業の初期の回転子先端上部とその周辺を示す要部立断面図である。図4は、本発明に係る回転電機の第1の実施形態における回転子挿入作業の終期の回転子先端上部とその周辺を示す要部立断面図である。
図5は、本発明に係る回転電機の第2の実施形態における回転子挿入作業の初期の回転子先端上部とその周辺を示す要部立断面図である。図6は、本発明に係る回転電機の第2の実施形態における回転子挿入作業の終期の回転子先端上部とその周辺を示す要部立断面図である。
図7は、本発明に係る回転電機の第3の実施形態における内部ファンの先端上部を示す要部拡大立断面図である。
図8は、本発明に係る回転電機の第4の実施形態における回転子挿入作業の初期の回転子先端上部とその周辺を示す要部立断面図である。
本発明のいくつかの実施形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれると同様に、特許請求の範囲に記載された発明とその均等の範囲に含まれるものである。
11 フレーム
12 固定子
13 軸受
14 シャフト
15 回転子
16 固定子鉄心
17 固定子コイル
19 コイルエンド
20 開口
21 回転子鉄心
22 永久磁石
23 先端クランパ
24 後端クランパ
25 締め付けボルト
26 ナット
30 摺動部
31 面取り部
32 ねじ
40 内部ファン
41 面取り部
42 緩衝部
50 案内部
60 外部ファン
61 ファンカバー
Claims (13)
- 水平方向に延びて回転可能に支持されたシャフトと、
前記シャフトに取り付けられた回転子と、
前記回転子を回転可能に支持する複数の軸受と、
前記回転子の半径方向外側との間に間隙を形成して前記回転子の半径方向外側を囲むほぼ円形の開口が形成されて軸に垂直な方向に広がった鋼板が軸方向に積層された固定子鉄心を備えた固定子と、
前記軸受および前記固定子を支持するフレームと、
を有し、前記シャフトに取り付けられた前記回転子を前記固定子鉄心の前記開口に軸方向に挿入することにより組み立て可能な回転電機であって、
前記回転子は、
軸に垂直な方向に広がった複数の鋼板が軸方向に積層された回転子鉄心と、
前記回転子鉄心内に挿入された複数の永久磁石と、
前記回転子鉄心を軸方向にはさんで配置されてそれぞれが軸に垂直な方向に広がった平円板状の2枚のクランパと、
前記2枚のクランパが互いに近づく方向に引っ張り力がかけられるように配置された複数の締め付けボルトと、
前記2枚のクランパのうちで前記回転子を前記固定子鉄心の前記開口に軸方向に挿入する際に先に挿入される側の先端クランパに配置されて、前記先端クランパおよび前記回転子鉄心よりも半径方向外側に突出し、前記固定子鉄心よりも軟らかい材料からなる摺動部と、
を有すること、を特徴とする回転電機。 - 前記摺動部は前記先端クランパに着脱可能に取り付けられていること、を特徴とする請求項1に記載の回転電機。
- 前記摺動部は、前記先端クランパに前記固定子鉄心よりも軟らかい材料をコーティングして形成されていること、を特徴とする請求項1に記載の回転電機。
- 前記摺動部は樹脂製であること、を特徴とする請求項1ないし請求項3のいずれか一項に記載の回転電機。
- 前記摺動部は、前記回転子を前記固定子鉄心の前記開口に軸方向に挿入する際に先に挿入される側の先端に向かって細くなるような面取りが形成されていること、を特徴とする請求項1ないし請求項4のいずれか一項に記載の回転電機。
- 前記先端クランパの前記回転子鉄心と反対側の面に取り付けられて、前記摺動部よりも半径方向内側に配置された内部ファンをさらに有すること、を特徴とする請求項1ないし請求項5のいずれか一項に記載の回転電機。
- 前記内部ファンは、軸方向先端に向かって先細りであること、を特徴とする請求項6に記載の回転電機。
- 前記内部ファンの軸方向先端の外周部に緩衝部が配置されていること、を特徴とする請求項6または請求項7に記載の回転電機。
- 前記先端クランパに取り付けられて前記回転子鉄心と反対側の軸方向に向かって突出し、前記固定子鉄心よりも軟らかい材料からなる案内部をさらに有すること、を特徴とする請求項1ないし請求項8のいずれか一項に記載の回転電機。
- 前記案内部は、前記先端クランパに着脱可能に取り付けられていること、を特徴とする請求項9に記載の回転電機。
- 前記案内部は、前記固定子鉄心よりも軟らかい材料をコーティングして形成されていること、を特徴とする請求項9に記載の回転電機。
- 前記案内部は樹脂製であること、を特徴とする請求項9ないし請求項11のいずれか一項に記載の回転電機。
- 前記案内部は、前記回転子を前記固定子鉄心の前記開口に軸方向に挿入する際に先に挿入される側の先端に向かって細くなるような面取りが形成されていること、を特徴とする請求項9ないし請求項12のいずれか一項に記載の回転電機。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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CN201380075878.5A CN105191084B (zh) | 2013-04-25 | 2013-04-25 | 旋转电机 |
PCT/JP2013/002828 WO2014174552A1 (ja) | 2013-04-25 | 2013-04-25 | 回転電機 |
KR1020157030473A KR101819312B1 (ko) | 2013-04-25 | 2013-04-25 | 회전 전기기계 |
JP2015513361A JP6089100B2 (ja) | 2013-04-25 | 2013-04-25 | 回転電機 |
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PCT/JP2013/002828 WO2014174552A1 (ja) | 2013-04-25 | 2013-04-25 | 回転電機 |
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WO2014174552A1 true WO2014174552A1 (ja) | 2014-10-30 |
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PCT/JP2013/002828 WO2014174552A1 (ja) | 2013-04-25 | 2013-04-25 | 回転電機 |
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JP (1) | JP6089100B2 (ja) |
KR (1) | KR101819312B1 (ja) |
CN (1) | CN105191084B (ja) |
WO (1) | WO2014174552A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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EP3627672A4 (en) * | 2017-08-25 | 2020-06-10 | Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | MOTOR ASSEMBLY METHOD, CENTERING JIG AND ELECTRIC MOTOR |
CN114337160A (zh) * | 2021-12-24 | 2022-04-12 | 国网河南省电力公司检修公司 | 调相机转子穿装辅助工装及其使用方法 |
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- 2013-04-25 WO PCT/JP2013/002828 patent/WO2014174552A1/ja active Application Filing
- 2013-04-25 JP JP2015513361A patent/JP6089100B2/ja not_active Expired - Fee Related
- 2013-04-25 KR KR1020157030473A patent/KR101819312B1/ko active IP Right Grant
- 2013-04-25 CN CN201380075878.5A patent/CN105191084B/zh active Active
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JPS61121750A (ja) * | 1984-11-15 | 1986-06-09 | Fanuc Ltd | 同期モ−タにおける回転子溶接方法 |
JPS61142950A (ja) * | 1984-12-15 | 1986-06-30 | Fanuc Ltd | 永久磁石界磁回転子 |
JPS6366081U (ja) * | 1986-10-17 | 1988-05-02 | ||
JPH0888955A (ja) * | 1994-09-13 | 1996-04-02 | Toyo Electric Mfg Co Ltd | 電動機の冷却ファン |
JPH10336962A (ja) * | 1997-05-26 | 1998-12-18 | Ebara Corp | 電動機 |
JPH11267934A (ja) * | 1998-03-20 | 1999-10-05 | Mitsubishi Electric Corp | 片持取付式永久磁石回転電機の挿脱装置 |
JP2006115666A (ja) * | 2004-10-18 | 2006-04-27 | Mitsubishi Electric Corp | 回転電機 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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EP3627672A4 (en) * | 2017-08-25 | 2020-06-10 | Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | MOTOR ASSEMBLY METHOD, CENTERING JIG AND ELECTRIC MOTOR |
US11418095B2 (en) | 2017-08-25 | 2022-08-16 | Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | Motor assembling method, centering jig, and electric motor |
CN114337160A (zh) * | 2021-12-24 | 2022-04-12 | 国网河南省电力公司检修公司 | 调相机转子穿装辅助工装及其使用方法 |
CN114337160B (zh) * | 2021-12-24 | 2023-08-22 | 国网河南省电力公司超高压公司 | 调相机转子穿装辅助工装及其使用方法 |
Also Published As
Publication number | Publication date |
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JP6089100B2 (ja) | 2017-03-01 |
KR20150133821A (ko) | 2015-11-30 |
JPWO2014174552A1 (ja) | 2017-02-23 |
CN105191084B (zh) | 2018-06-08 |
KR101819312B1 (ko) | 2018-01-16 |
CN105191084A (zh) | 2015-12-23 |
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