JP2003102151A - Electric motor and producing method therefor - Google Patents
Electric motor and producing method thereforInfo
- Publication number
- JP2003102151A JP2003102151A JP2001291609A JP2001291609A JP2003102151A JP 2003102151 A JP2003102151 A JP 2003102151A JP 2001291609 A JP2001291609 A JP 2001291609A JP 2001291609 A JP2001291609 A JP 2001291609A JP 2003102151 A JP2003102151 A JP 2003102151A
- Authority
- JP
- Japan
- Prior art keywords
- electric motor
- permanent magnet
- rotor
- end plate
- manufacturing
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高速で回転駆動さ
れる電動機および前記電動機の製造方法、ならびに前記
電動機を搭載した圧縮機ならびに前記圧縮機を具備した
エアコン、燃料電池またはアクチュエータ等、各種機器
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric motor that is rotationally driven at a high speed, a method for manufacturing the electric motor, a compressor equipped with the electric motor, and various devices such as an air conditioner, a fuel cell or an actuator including the compressor. It is about.
【０００２】[0002]
【従来の技術】図４に従来の電動機の回転子構成を示
す。2. Description of the Related Art FIG. 4 shows a rotor structure of a conventional electric motor.
【０００３】従来の電動機の回転子１１の回転子鉄心１
５と永久磁石１２の寸法の設計において、永久磁石１２
を回転子鉄心１５に組み付けるとき、永久磁石１２がス
ムースに挿入でき、割れたり欠けたりすることが無いよ
うに、半径方向に０．数ｍｍ程度、軸方向に数ｍｍのク
リアランスを設定するのが一般的である。従って、回転
子１１に組み上げたときには、回転子鉄心１５と永久磁
石１２とのクリアランス内で永久磁石１２が動いてしま
う。A rotor core 1 of a rotor 11 of a conventional electric motor
5 and the dimensions of the permanent magnet 12
When assembling the rotor core 15 to the rotor core 15, the permanent magnet 12 can be smoothly inserted, and the permanent magnet 12 can be inserted in the radial direction of 0. It is general to set a clearance of about several mm and several mm in the axial direction. Therefore, when assembled into the rotor 11, the permanent magnet 12 moves within the clearance between the rotor core 15 and the permanent magnet 12.
【０００４】また、特開２０００−１９７２９１公報に
は、回転子鉄心に形成された孔に挿入された複数の永久
磁石が、接着剤で固定された電動機が開示されている。Further, Japanese Patent Laid-Open No. 2000-197291 discloses an electric motor in which a plurality of permanent magnets inserted into holes formed in a rotor core are fixed with an adhesive.
【０００５】[0005]
【発明が解決しようとする課題】上記理由により永久磁
石は回転子鉄心内でクリアランスの範囲内で自由に動く
ため、回転子の機械的アンバランスを０に近づける修正
をする際に、ある程度の限界があった。For the above reason, the permanent magnet is free to move within the clearance within the rotor core, so that there is a certain limit when the mechanical unbalance of the rotor is corrected to zero. was there.
【０００６】また、電動機に組み上がった後、３０００
ｒ／ｍｉｎ以上、１５０００ｒ／ｍｉｎ以下の高速で運
転すると、振動が大きくなり、その結果騒音も大きくな
るという課題があった。[0006] Also, after assembled into an electric motor, 3000
When operating at a high speed of r / min or more and 15000 r / min or less, there is a problem that vibration increases and, as a result, noise also increases.
【０００７】さらに、圧縮機に用いた場合、冷媒および
冷凍機油雰囲気中で使用されるため、特に接着剤により
永久磁石を固定した場合、接着剤の選定が困難となる。Further, when it is used in a compressor, it is used in a refrigerant and refrigerating machine oil atmosphere, so that it becomes difficult to select the adhesive, especially when the permanent magnet is fixed by the adhesive.
【０００８】本発明はこのような課題に鑑みなされたも
のであり、永久磁石の回転子鉄心に形成された孔内で動
きを規制し、機械的アンバランスを小さくすること、な
らびに機器に組み込まれたときの低振動・低騒音を実現
することができる電動機および電動機の製造方法を提供
することを目的とする。The present invention has been made in view of the above problems, and restricts movement in a hole formed in a rotor core of a permanent magnet to reduce mechanical imbalance, and is incorporated in equipment. An object of the present invention is to provide an electric motor and a method of manufacturing the electric motor, which can realize low vibration and low noise when the electric motor is driven.
【０００９】[0009]
【課題を解決するための手段】上記課題を解決するため
に本発明は、電動機の製造方法を、永久磁石を回転子鉄
心の孔に焼きばめした後、端板に設けた突起が永久磁石
の軸方向端面に接するように設置し、締結手段により前
記端板を固定したものである。In order to solve the above problems, the present invention is directed to a method for manufacturing an electric motor in which a permanent magnet is shrink-fitted in a hole of a rotor core, and then a projection provided on an end plate has a permanent magnet. It is installed so as to contact the end face in the axial direction of and the end plate is fixed by fastening means.
【００１０】これにより、回転子鉄心内において永久磁
石は、半径方向および軸方向から規制され、高速回転に
際しても動くことがない電動機および電動機の製造方法
を得ることができる。As a result, it is possible to obtain an electric motor and a method for manufacturing the electric motor in which the permanent magnets are restricted in the radial direction and the axial direction in the rotor iron core and do not move even at high speed rotation.
【００１１】[0011]
【発明の実施の形態】本発明の請求項１に記載の発明
は、固定子と、前記固定子内径に回転自在に回転する内
転型電動機の回転子であって、前記回転子は永久磁石を
収納する孔を有する複数の鋼板を積層した回転子鉄心
と、前記回転子鉄心に収納された複数の永久磁石と、軸
方向に配備された端板と、前記回転子鉄心と前記端板を
締結するため締結手段により構成される電動機の製造方
法において、永久磁石を回転子鉄心の孔に焼きばめする
ことを特徴とする電動機の製造方法であり、回転子鉄心
に形成された孔への永久磁石の半径方向の保持が容易に
できる。DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is a stator and a rotor of an inner rotation type electric motor which is rotatably rotated by the inner diameter of the stator, wherein the rotor is a permanent magnet. A rotor core in which a plurality of steel plates having a hole for accommodating is laminated, a plurality of permanent magnets housed in the rotor core, an end plate arranged in the axial direction, the rotor core and the end plate. A method of manufacturing an electric motor configured by fastening means for fastening, the method being the method of manufacturing an electric motor characterized by shrink-fitting a permanent magnet into a hole of a rotor iron core. The permanent magnet can be easily held in the radial direction.
【００１２】請求項２に記載の発明は、請求項１に記載
の電動機の製造方法において、永久磁石を回転子鉄心の
孔に焼きばめした後、端板に設けた突起が永久磁石の軸
方向端面に接するように設置し、締結手段により前記端
板を固定したことを特徴とする電動機の製造方法であ
り、永久磁石の軸方向端面に端板に設けた突起を接触さ
せるため、製造時に一般的にぜい性的性質を有する永久
磁石の欠け等を防止しながら、永久磁石を半径方向およ
び軸方向に保持することができる。According to a second aspect of the present invention, in the method of manufacturing the electric motor according to the first aspect, after the permanent magnet is shrink-fitted in the hole of the rotor core, the projection provided on the end plate is the shaft of the permanent magnet. It is installed so as to contact the end face in the direction, and the end plate is fixed by a fastening means.A method of manufacturing an electric motor, wherein a projection provided on the end plate is brought into contact with the end face in the axial direction of the permanent magnet. It is possible to hold the permanent magnets in the radial direction and the axial direction while preventing the permanent magnets, which generally have a brittle property, from chipping or the like.
【００１３】請求項３に記載の発明は、請求項１に記載
の電動機の製造方法において、永久磁石を回転子鉄心の
孔に焼きばめした後、端板と永久磁石の軸方向端面に形
成される隙間に端板と一体あるいは別体の弾性を有する
突起が永久磁石の軸方向端面に接するように設置し締結
手段により前記端板を固定したことを特徴とする電動機
の製造方法であり、弾性体の収縮により隙間の公差範囲
内でのばらつきを吸収することができる。According to a third aspect of the present invention, in the method of manufacturing an electric motor according to the first aspect, after the permanent magnet is shrink-fitted in the hole of the rotor core, the permanent magnet is formed on the axial end faces of the end plate and the permanent magnet. A method for manufacturing an electric motor, characterized in that a protrusion having elasticity which is integral with or separate from the end plate is installed in the gap so as to contact the axial end face of the permanent magnet, and the end plate is fixed by fastening means. By contracting the elastic body, it is possible to absorb variations in the gap within the tolerance range.
【００１４】請求項４に記載の発明は、請求項１から請
求項３のいずれか１項に記載の電動機の製造方法により
組み立てられた電動機であって、回転子回転数が３００
０ｒ／ｍｉｎ以上で駆動されることを特徴とする電動機
であり、高い回転数領域で回転駆動されても、永久磁石
の回転子鉄心内での半径方向および軸方向への動きを規
制し、機械的アンバランスを小さくすることができる。The invention described in claim 4 is an electric motor assembled by the method for manufacturing an electric motor according to any one of claims 1 to 3, and has a rotor rotation speed of 300.
An electric motor characterized by being driven at 0 r / min or more. Even if the electric motor is driven to rotate in a high rotation speed range, the permanent magnet is restricted from moving in the radial direction and the axial direction in the rotor core, and is a machine. The physical imbalance can be reduced.
【００１５】請求項５に記載の発明は、請求項４に記載
の電動機を搭載したことを特徴とする機器であり、低振
動、低騒音の燃料電池とすることができる。A fifth aspect of the present invention is a device equipped with the electric motor according to the fourth aspect, and can be a fuel cell with low vibration and low noise.
【００１６】請求項６に記載の発明は、請求項５に記載
の機器が移動することを特徴とする移動体であり、移動
にともなう振動等により電動機に作用する外力に対して
も、永久磁石が回転子鉄心内で動くことを規制すること
ができる。According to a sixth aspect of the present invention, there is provided a moving body characterized in that the device according to the fifth aspect is moved, and the permanent magnet is also provided with respect to an external force acting on the electric motor due to vibrations accompanying the movement. Can be restricted from moving inside the rotor core.
【００１７】[0017]
【実施例】以下、本発明の具体例について図面を参照し
て説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific examples of the present invention will be described below with reference to the drawings.
【００１８】内転型電動機は固定子と、固定子内径に回
転自在に保持された回転子を主構成要素として構成され
ている。The inversion type electric motor is mainly composed of a stator and a rotor rotatably held in the inner diameter of the stator.
【００１９】図１は、本発明の一具体例を示す、電動機
の回転子構成を示している。FIG. 1 shows a rotor structure of an electric motor showing one embodiment of the present invention.
【００２０】図１に示すように、回転子１１は、永久磁
石１２を収納する孔１３を有する複数の高透磁率薄鉄板
１４を積層した回転子鉄心１５と、回転子鉄心１５に収
納保持された複数の永久磁石１２と、軸方向に配備され
た端板１６と、回転子鉄心１５と端板１６とを締結する
ためのカシメピン１７やボルト、ナット等の締結手段に
より構成されている。なお、図において２４は弾性を有
する突起である。As shown in FIG. 1, the rotor 11 is housed and held in the rotor core 15 and a rotor core 15 in which a plurality of high-permeability thin iron plates 14 having holes 13 for housing the permanent magnets 12 are laminated. In addition, the permanent magnets 12 are constituted by a plurality of permanent magnets 12, end plates 16 arranged in the axial direction, and caulking pins 17 for fastening the rotor core 15 and the end plates 16 and fastening means such as bolts and nuts. In the figure, reference numeral 24 is a protrusion having elasticity.
【００２１】永久磁石１２は孔１３に焼きばめされ、回
転子鉄心１５に収納保持されている。これにより、圧入
等の工程が不要になり、永久磁石１２の割れ、欠けを防
止することができる。The permanent magnet 12 is shrink-fitted in the hole 13, and is housed and held in the rotor core 15. As a result, steps such as press-fitting are unnecessary, and cracking and chipping of the permanent magnet 12 can be prevented.
【００２２】回転子鉄心１５はプレスで打ち抜かれた高
透磁率薄鉄板１４を積層し形成されるため、その破断面
は何ら保護膜のない状態で腐食環境にさらされることに
なり、また、打ち抜きによる加工ひずみ除去を目的とし
て、ブルーイング処理あるいは焼鈍工程を経る場合が多
く、このような処理のために高温雰囲気中に一定時間保
持される。Since the rotor core 15 is formed by laminating the high-permeability thin iron plates 14 punched by a press, the fracture surface thereof is exposed to a corrosive environment without any protective film. In many cases, a bluing treatment or an annealing step is performed for the purpose of removing the processing strain due to, and for such treatment, the material is kept in a high temperature atmosphere for a certain time.
【００２３】この工程において永久磁石１２の焼きばめ
を実施することで、組立工数を減らすことが可能で、焼
きばめに対する設備投資を抑制することもできる。By performing the shrink fitting of the permanent magnets 12 in this step, the number of assembling steps can be reduced and the capital investment for the shrink fitting can be suppressed.
【００２４】焼きばめされた永久磁石１２は半径方向に
より拘束されるため、当該方向への動きが規制されるこ
とになる。Since the shrink-fitted permanent magnet 12 is constrained in the radial direction, the movement in that direction is restricted.
【００２５】図２は、図１に示す回転子１１の断面であ
り、端板に設けた突起を示している。図２に示すよう
に、端板２１の永久磁石２２に対向する個所に突起２４
は設けられている。なお、図において、２３は固定子鉄
心である。FIG. 2 is a cross section of the rotor 11 shown in FIG. 1, showing the protrusions provided on the end plates. As shown in FIG. 2, a protrusion 24 is provided at a portion of the end plate 21 facing the permanent magnet 22.
Is provided. In the figure, 23 is a stator core.
【００２６】また、図２における突起２４は端板２１を
半抜き状態としているため、突起２４は永久磁石２２と
の接触に際し、軸方向に弾性変形が可能であり、例え
ば、永久磁石２２の軸方向長さが高くなった場合、突起
２４が弾性変形（降伏応力を超える応力が作用した場合
は塑性変形）し、永久磁石２２に作用する押し圧力を調
整することができる。Further, since the projection 24 in FIG. 2 has the end plate 21 half-extracted, the projection 24 can be elastically deformed in the axial direction when coming into contact with the permanent magnet 22, and for example, the shaft of the permanent magnet 22 can be deformed. When the directional length increases, the protrusion 24 elastically deforms (plastically deforms when a stress exceeding the yield stress acts), and the pressing force acting on the permanent magnet 22 can be adjusted.
【００２７】なお、軸方向への永久磁石２２の動きは突
起２４において規制することが可能であるため、半径方
向のみからの押し圧力（焼きばめ代により調整）により
軸方向の動きを規制する場合と比較して、焼きばめ代を
小さくすることが可能で、より、焼きばめによる永久磁
石の挿入が容易となる。Since the movement of the permanent magnet 22 in the axial direction can be regulated by the projection 24, the axial movement is regulated by the pressing force (adjusted by the shrinkage allowance) only in the radial direction. Compared with the case, it is possible to reduce the shrink fitting allowance, and it becomes easier to insert the permanent magnet by shrink fitting.
【００２８】この突起２４の弾性変形により、永久磁石
２２の割れあるいは欠け等の発生を防止することができ
る。なお、永久磁石２２の軸方向端面に突起２４を対向
させることによっても、当該欠陥の発生を防止すること
ができる。The elastic deformation of the projection 24 can prevent the permanent magnet 22 from cracking or chipping. The defect can also be prevented by making the projection 24 face the axial end surface of the permanent magnet 22.
【００２９】図３は図２とは異なる突起構造を示してい
る。図３に示すように、端板３１に切り起こしの突起３
４を形成することによっても、上記突起２４と同様の作
用効果を得ることができる。なお、図において、３１は
端板、３２は永久磁石、３３は固定子鉄心である。FIG. 3 shows a protrusion structure different from that of FIG. As shown in FIG. 3, the cut-and-raised protrusion 3 is formed on the end plate 31.
By forming 4 as well, it is possible to obtain the same effect as that of the protrusion 24. In the figure, 31 is an end plate, 32 is a permanent magnet, and 33 is a stator core.
【００３０】また、半抜きの突起２４あるいは切り起こ
しの突起３４とせず、当該部分にバネ（コイルまたは板
等形状問わず）あるいは樹脂若しくはゴム等の別体の弾
性体を設置してもよく、前記別体の弾性体の収縮により
隙間の公差範囲内でのばらつきを吸収することができ
る。Further, instead of the half-blanked protrusion 24 or the cut-and-raised protrusion 34, a spring (regardless of shape such as a coil or a plate) or a separate elastic body such as resin or rubber may be installed in the portion. By contracting the separate elastic body, it is possible to absorb variations in the gap within the tolerance range.
【００３１】上記製造方法による回転子を具備する電動
機は、永久磁石に外力が作用する状況下、特に、３００
０ｒ／ｍｉｎ以上の高速回転駆動状態、あるいは移動体
に搭載され走行する場合（走行により振動発生）におい
ても、永久磁石の動きを規制することができる。The electric motor equipped with the rotor manufactured by the above-mentioned manufacturing method has a structure in which the external force is applied to the permanent magnets, especially 300
The movement of the permanent magnets can be restricted even in a high-speed rotation driving state of 0 r / min or more, or when the vehicle is mounted on a moving body and travels (vibration is generated by traveling).
【００３２】このような状況下で使用される機器として
は、自動車搭載用の電動圧縮機、前記圧縮機を具備した
エアコン、若しくは前記エアコン用の送風ファン、また
はラジエター冷却用のファン、ならびに電気自動車等に
使用される燃料電池（電動機は水素および酸素の供給用
に使用）等があり、移動体としては自動車、電気自転
車、電気掃除機（人と共に移動しながら使用）等があ
る。As equipment used under such a condition, an electric compressor mounted on a vehicle, an air conditioner equipped with the compressor, or a fan for the air conditioner, a fan for cooling a radiator, or an electric vehicle is used. There are fuel cells (electric motors are used to supply hydrogen and oxygen) and the like, and mobile units include automobiles, electric bicycles, electric vacuum cleaners (used while moving with people), and the like.
【００３３】なお、当該移動体の中にはバッテリーで駆
動されるものも多く、このような場合、電動機の効率が
高いため、バッテリーの電力消費を低減することができ
る。Many of the moving bodies are driven by a battery. In such a case, the efficiency of the electric motor is high, so that the power consumption of the battery can be reduced.
【００３４】さらに、使用環境に影響されることなく、
すなわち、圧縮機内雰囲気（冷媒および冷凍機油）にお
ける使用に際しても、確実に永久磁石の動きを規制する
ことが可能であり、圧縮機運転時の電動機以外の圧縮機
構成部材の運動等による外力に対しても永久磁石の動き
を規制することができる。Furthermore, without being affected by the use environment,
That is, even when the compressor is used in the atmosphere (refrigerant and refrigerating machine oil), it is possible to reliably restrict the movement of the permanent magnets, and to prevent external force due to movement of compressor constituent members other than the electric motor during operation of the compressor. However, the movement of the permanent magnet can be restricted.
【００３５】[0035]
【発明の効果】以上のように本発明によれば、永久磁石
の固定子鉄心に形成された孔内での動きを半径方向また
は軸方向、あるいはその両方から保持することが可能
で、機械的アンバランスを小さくすることができる電動
機の製造を容易に行うことができる。As described above, according to the present invention, the movement of the permanent magnet in the hole formed in the stator core can be retained from the radial direction and / or the axial direction, and the mechanical movement can be maintained. An electric motor that can reduce the imbalance can be easily manufactured.
【００３６】また、端板と一体あるいは別体の弾性体に
より、永久磁石の軸方向への動きを規制するため、組立
工程における永久磁石の割れあるいは欠け等の発生を防
止することができる。さらに、永久磁石の軸方向端面に
弾性体を対向させることによっても、当該欠陥の発生を
さらに低くすることができる。Further, since the movement of the permanent magnet in the axial direction is regulated by the elastic body which is integral with or separate from the end plate, it is possible to prevent the permanent magnet from cracking or chipping during the assembly process. Further, the occurrence of the defect can be further reduced by making the elastic body face the axial end surface of the permanent magnet.
【００３７】また、永久磁石の動きが規制されているた
め、機械的アンバランスが小さく、３０００ｒ／ｍｉｎ
以上の高速回転駆動されたとしても、低振動、低騒音の
電動機を得ることができる。Since the movement of the permanent magnet is restricted, the mechanical imbalance is small and 3000 r / min.
Even if it is driven at a high speed as described above, it is possible to obtain an electric motor with low vibration and low noise.
【００３８】さらに、機器または移動体に上記電動機を
搭載することで、低振動、低騒音の移動体を得ることが
できる。Further, by mounting the above electric motor on a device or a moving body, a moving body with low vibration and low noise can be obtained.
【図１】本発明の電動機の回転子構成を示す斜視図FIG. 1 is a perspective view showing a rotor configuration of an electric motor of the present invention.
【図２】本発明の回転子の端板に設けた突起の断面図FIG. 2 is a sectional view of a protrusion provided on an end plate of a rotor according to the present invention.
【図３】本発明の別の回転子の端板に設けた突起の断面
図FIG. 3 is a sectional view of a protrusion provided on an end plate of another rotor of the present invention.
【図４】従来の電動機の回転子構成を示す斜視図FIG. 4 is a perspective view showing a rotor configuration of a conventional electric motor.
１１ 回転子 １２、２２、３２ 永久磁石 １３ 孔 １４ 高透磁率薄鉄板 １５ 回転子鉄心 １６、２１、３１ 端板 １７ カシメピン ２４、３４ 突起 11 rotor 12, 22, 32 Permanent magnet 13 holes 14 High permeability thin iron plate 15 rotor core 16, 21, 31 End plate 17 caulking pin 24, 34 protrusions
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 5H002 AA04 AA07 AB08 AC06 5H621 HH01 JK01 5H622 CA02 CA07 CA10 CA13 CB04 PP03 PP11 PP17 ─────────────────────────────────────────────────── ─── Continued front page F-term (reference) 5H002 AA04 AA07 AB08 AC06 5H621 HH01 JK01 5H622 CA02 CA07 CA10 CA13 CB04 PP03 PP11 PP17
Claims (6)
回転する内転型電動機の回転子であって、前記回転子は
永久磁石を収納する孔を有する複数の鋼板を積層した回
転子鉄心と、前記回転子鉄心に収納された複数の永久磁
石と、軸方向に配備された端板と、前記回転子鉄心と前
記端板を締結するため締結手段により構成される電動機
の製造方法において、永久磁石を回転子鉄心の孔に焼き
ばめすることを特徴とする電動機の製造方法。1. A rotor and a rotor of an inner rotation type electric motor that is rotatably rotated in the inner diameter of the stator, wherein the rotor has a plurality of laminated steel plates having holes for accommodating permanent magnets. In a method of manufacturing an electric motor configured by an iron core, a plurality of permanent magnets housed in the rotor iron core, end plates arranged in an axial direction, and fastening means for fastening the rotor iron core and the end plates. A method for manufacturing an electric motor, comprising shrink-fitting a permanent magnet into a hole of a rotor core.
いて、永久磁石を回転子鉄心の孔に焼きばめした後、端
板に設けた突起が永久磁石の軸方向端面に接するように
設置し、締結手段により前記端板を固定したことを特徴
とする電動機の製造方法。2. The method for manufacturing an electric motor according to claim 1, wherein after the permanent magnet is shrink-fitted in the hole of the rotor core, the projection provided on the end plate is installed so as to contact the axial end surface of the permanent magnet. Then, the end plate is fixed by the fastening means.
いて、永久磁石を回転子鉄心の孔に焼きばめした後、端
板と永久磁石の軸方向端面に形成される隙間に端板と一
体あるいは別体の弾性を有する突起が永久磁石の軸方向
端面に接するように設置し締結手段により前記端板を固
定したことを特徴とする電動機の製造方法。3. The method for manufacturing an electric motor according to claim 1, wherein after the permanent magnet is shrink-fitted in the hole of the rotor core, the end plate is provided in a gap formed between the end plate and the axial end surface of the permanent magnet. A method for manufacturing an electric motor, characterized in that a projection having elasticity which is an integral part or a separate piece is installed so as to contact an end face in the axial direction of the permanent magnet, and the end plate is fixed by a fastening means.
記載の電動機の製造方法により組み立てられた電動機で
あって、回転子回転数が３０００ｒ／ｍｉｎ以上で駆動
されることを特徴とする電動機。4. An electric motor assembled by the method for manufacturing an electric motor according to claim 1, wherein the electric motor is driven at a rotor rotation speed of 3000 r / min or more. Electric motor to do.
を特徴とする機器。5. A device equipped with the electric motor according to claim 4.
特徴とする移動体。6. A mobile body, wherein the device according to claim 5 moves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001291609A JP2003102151A (en) | 2001-09-25 | 2001-09-25 | Electric motor and producing method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001291609A JP2003102151A (en) | 2001-09-25 | 2001-09-25 | Electric motor and producing method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003102151A true JP2003102151A (en) | 2003-04-04 |
Family
ID=19113723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001291609A Withdrawn JP2003102151A (en) | 2001-09-25 | 2001-09-25 | Electric motor and producing method therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003102151A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006109645A (en) * | 2004-10-07 | 2006-04-20 | Matsushita Electric Ind Co Ltd | Rotor structure of ipm motor |
| JP2007068304A (en) * | 2005-08-30 | 2007-03-15 | Denso Corp | Rotor of rotary electric machine |
| US7365466B2 (en) | 2004-12-20 | 2008-04-29 | Danfoss Compressors Gmbh | Rotor for an electrical motor |
| EP1947758A2 (en) | 2007-01-19 | 2008-07-23 | Fanuc Ltd | Method of manufacturing rotor of electric motor and electric motor |
| US7612481B2 (en) | 2004-12-20 | 2009-11-03 | Danfoss Compressors Gmbh | Rotor with a cover plate for securing a magnet in the rotor |
| US7619343B2 (en) | 2004-12-20 | 2009-11-17 | Danfoss Compressors Gmbh | Rotor for an electrical motor |
| JP2009278777A (en) * | 2008-05-14 | 2009-11-26 | Asmo Co Ltd | Rotor and motor |
| US7939985B2 (en) | 2008-03-12 | 2011-05-10 | Nidec Corporation | Motor and method for manufacturing rotor unit of the motor |
| KR101040959B1 (en) | 2009-07-28 | 2011-06-16 | 전자부품연구원 | Rotator having cover plate and PMSM using the same |
| CN107968504A (en) * | 2017-12-29 | 2018-04-27 | 天津创远亿德科技发展有限公司 | A kind of permanent magnet synchronous motor |
-
2001
- 2001-09-25 JP JP2001291609A patent/JP2003102151A/en not_active Withdrawn
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006109645A (en) * | 2004-10-07 | 2006-04-20 | Matsushita Electric Ind Co Ltd | Rotor structure of ipm motor |
| US7365466B2 (en) | 2004-12-20 | 2008-04-29 | Danfoss Compressors Gmbh | Rotor for an electrical motor |
| US7612481B2 (en) | 2004-12-20 | 2009-11-03 | Danfoss Compressors Gmbh | Rotor with a cover plate for securing a magnet in the rotor |
| US7619343B2 (en) | 2004-12-20 | 2009-11-17 | Danfoss Compressors Gmbh | Rotor for an electrical motor |
| JP2007068304A (en) * | 2005-08-30 | 2007-03-15 | Denso Corp | Rotor of rotary electric machine |
| JP4706397B2 (en) * | 2005-08-30 | 2011-06-22 | 株式会社デンソー | Rotor for rotating electrical machine and method for manufacturing the same |
| EP1947758A2 (en) | 2007-01-19 | 2008-07-23 | Fanuc Ltd | Method of manufacturing rotor of electric motor and electric motor |
| US7939985B2 (en) | 2008-03-12 | 2011-05-10 | Nidec Corporation | Motor and method for manufacturing rotor unit of the motor |
| JP2009278777A (en) * | 2008-05-14 | 2009-11-26 | Asmo Co Ltd | Rotor and motor |
| KR101040959B1 (en) | 2009-07-28 | 2011-06-16 | 전자부품연구원 | Rotator having cover plate and PMSM using the same |
| CN107968504A (en) * | 2017-12-29 | 2018-04-27 | 天津创远亿德科技发展有限公司 | A kind of permanent magnet synchronous motor |
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