JP7043979B2 - Surface permanent magnet type rotor of rotary electric machine - Google Patents

Surface permanent magnet type rotor of rotary electric machine Download PDF

Info

Publication number
JP7043979B2
JP7043979B2 JP2018104710A JP2018104710A JP7043979B2 JP 7043979 B2 JP7043979 B2 JP 7043979B2 JP 2018104710 A JP2018104710 A JP 2018104710A JP 2018104710 A JP2018104710 A JP 2018104710A JP 7043979 B2 JP7043979 B2 JP 7043979B2
Authority
JP
Japan
Prior art keywords
permanent magnet
electric machine
rotary electric
type rotor
magnet type
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.)
Active
Application number
JP2018104710A
Other languages
Japanese (ja)
Other versions
JP2019213264A (en
Inventor
和也 小倉
準也 松野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Meidensha Corp
Original Assignee
Meidensha Corp
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 Meidensha Corp filed Critical Meidensha Corp
Priority to JP2018104710A priority Critical patent/JP7043979B2/en
Publication of JP2019213264A publication Critical patent/JP2019213264A/en
Application granted granted Critical
Publication of JP7043979B2 publication Critical patent/JP7043979B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Description

本発明は、電動機や発電機等の回転電機の表面永久磁石型ロータに関する。 The present invention relates to a surface permanent magnet type rotor of a rotating electric machine such as an electric motor or a generator.

コア部の外周面に複数の永久磁石を布設した表面永久磁石（ＳＰＭ）型ロータを利用した電動機や発電機等の回転電機においては、ロータが高速度で回転すると、永久磁石が遠心力により外れてしまうおそれがあるため、当該永久磁石をコア部の外周面に押え付けるように繊維強化樹脂（ＦＲＰ）からなる保持リングを複数嵌合することにより、当該永久磁石をコア部に保持リングで固定するようにしている。 In rotary electric machines such as motors and generators that use surface permanent magnet (SPM) type rotors with multiple permanent magnets laid on the outer peripheral surface of the core, when the rotor rotates at high speed, the permanent magnets come off due to centrifugal force. Therefore, the permanent magnet is fixed to the core with the holding ring by fitting a plurality of holding rings made of fiber reinforced resin (FRP) so as to press the permanent magnet against the outer peripheral surface of the core. I try to do it.

特開２００１－０８６６７７号公報Japanese Unexamined Patent Publication No. 2001-08667 特開２００２－０３４２１６号公報Japanese Unexamined Patent Publication No. 2002-034216 特開２０１７－１９５６９５号公報JP-A-2017-195695

前述したような回転電機のＳＰＭ型ロータにおいては、ＦＲＰからなるパイプを径方向に沿って切断して作製した保持リングを利用していることから、保持リングの端面に繊維と樹脂との界面が露出してしまっている。このため、保持リングは、外部露出する前記界面から内部に空気が侵入し易く、内部に侵入した空気中の酸素によって樹脂が酸化して強度低下を引き起こしてしまうおそれがあった。 In the SPM type rotor of the rotary electric machine as described above, since a retaining ring made by cutting a pipe made of FRP along the radial direction is used, the interface between the fiber and the resin is formed on the end face of the retaining ring. It has been exposed. For this reason, air easily enters the inside of the retaining ring from the interface exposed to the outside, and oxygen in the air that has entered the inside may oxidize the resin and cause a decrease in strength.

このようなことから、本発明は、保持リングの酸化劣化を大きく抑制することができる回転電機のＳＰＭ型ロータを提供することを目的とする。 Therefore, it is an object of the present invention to provide an SPM type rotor of a rotary electric machine capable of greatly suppressing oxidative deterioration of a retaining ring.

前述した課題を解決するための、本発明に係る回転電機の表面永久磁石型ロータは、コア部の外周面に複数の永久磁石を布設して、当該永久磁石を当該コア部の外周面に押え付けるように繊維強化樹脂からなる保持リングを複数嵌合することにより、当該永久磁石を当該コア部に当該保持リングで固定した回転電機の表面永久磁石型ロータにおいて、前記保持リングの端面を覆う高分子材料からなる保護体が設けられていることを特徴とする。 In the surface permanent magnet type rotor of the rotary electric machine according to the present invention for solving the above-mentioned problems, a plurality of permanent magnets are laid on the outer peripheral surface of the core portion, and the permanent magnets are pressed against the outer peripheral surface of the core portion. A height that covers the end face of the holding ring in the surface permanent magnet type rotor of a rotary electric machine in which the permanent magnet is fixed to the core portion by the holding ring by fitting a plurality of holding rings made of fiber reinforced resin so as to be attached. It is characterized in that a protective body made of a molecular material is provided.

また、本発明に係る回転電機の表面永久磁石型ロータは、前述した回転電機の表面永久磁石型ロータにおいて、前記保護体が、前記保持リングの外周面及び端面を被覆する保護層であることを特徴とする。 Further, in the surface permanent magnet type rotor of the rotary electric machine according to the present invention, in the above-mentioned surface permanent magnet type rotor of the rotary electric machine, the protective body is a protective layer that covers the outer peripheral surface and the end surface of the holding ring. It is a feature.

また、本発明に係る回転電機の表面永久磁石型ロータは、前述した回転電機の表面永久磁石型ロータにおいて、前記保護体が、前記コア部の軸方向で隣り合う前記保持リングの間及び当該軸方向両端側に位置する前記保持リングの軸方向外側に位置するように前記コアの前記永久磁石上にそれぞれ嵌合して当該保持リングの端面を塞ぐ複数の保護リングであることを特徴とする。 Further, in the surface permanent magnet type rotor of the rotary electric machine according to the present invention, in the above-mentioned surface permanent magnet type rotor of the rotary electric machine, the protective body is located between the holding rings adjacent to each other in the axial direction of the core portion and the shaft. It is characterized by having a plurality of protective rings that are fitted on the permanent magnets of the core so as to be located on the axially outer side of the holding ring located on both end sides in the direction and close the end faces of the holding ring.

また、本発明に係る回転電機の表面永久磁石型ロータは、前述した回転電機の表面永久磁石型ロータにおいて、前記保護体が、前記高分子材料よりも高い熱伝導性を有する材料からなる充填材を含有するものであることを特徴とする。 Further, the surface permanent magnet type rotor of the rotary electric machine according to the present invention is a filler in which the protective body is made of a material having higher thermal conductivity than the polymer material in the above-mentioned surface permanent magnet type rotor of the rotary electric machine. It is characterized by containing.

本発明に係る回転電機の表面永久磁石型ロータによれば、保持リングの端面が保護体で覆われることから、保持リングの端面に位置する繊維と樹脂との界面が外部へ露出することを防止できるので、保持リングの外部露出する上記界面から保持リングの内部へ空気が侵入してしまうことを防止できる。その結果、保持リングの酸化劣化を大きく抑制することができ、保持リングの強度低下を大きく抑制することができる。 According to the surface permanent magnet type rotor of the rotary electric machine according to the present invention, since the end face of the holding ring is covered with the protective body, the interface between the fiber and the resin located on the end face of the holding ring is prevented from being exposed to the outside. Therefore, it is possible to prevent air from entering the inside of the holding ring from the above-mentioned interface exposed to the outside of the holding ring. As a result, the oxidative deterioration of the retaining ring can be greatly suppressed, and the decrease in the strength of the retaining ring can be greatly suppressed.

本発明に係る回転電機の表面永久磁石型ロータの第一番目の実施形態の概略構成図である。It is a schematic block diagram of the 1st Embodiment of the surface permanent magnet type rotor of the rotary electric machine which concerns on this invention. 図１の断面図である。It is sectional drawing of FIG. 本発明に係る回転電機の表面永久磁石型ロータの第二番目の実施形態の概略構成図である。It is a schematic block diagram of the 2nd Embodiment of the surface permanent magnet type rotor of the rotary electric machine which concerns on this invention. 図３の断面図である。It is sectional drawing of FIG. 本発明に係る回転電機の表面永久磁石型ロータの他の実施形態の概略構成図である。It is a schematic block diagram of another embodiment of the surface permanent magnet type rotor of the rotary electric machine which concerns on this invention. 図５の断面図である。FIG. 5 is a cross-sectional view of FIG.

本発明に係る回転電機の表面永久磁石（ＳＰＭ）型ロータの実施形態を図面に基づいて説明するが、本発明は、図面に基づいて説明する以下の実施形態のみに限定されるものではない。 An embodiment of a surface permanent magnet (SPM) type rotor of a rotary electric machine according to the present invention will be described with reference to the drawings, but the present invention is not limited to the following embodiments described based on the drawings.

〈第一番目の実施形態〉
本発明に係る回転電機のＳＰＭ型ロータの第一番目の実施形態を図１，２に基づいて説明する。 <First embodiment>
The first embodiment of the SPM type rotor of the rotary electric machine according to the present invention will be described with reference to FIGS. 1 and 2.

図１，２に示すように、円柱形状をなす軸部１１の外周上の長手方向中央部分には、円筒形状をなすコア部１２が同軸をなして設けられている。コア部１２の外周面上には、円弧形状をなす永久磁石（ＰＭ）１３が当該コア部１２の長手方向中央部分全体を覆うように当該コア部１２の周方向及び軸方向に亘って複数布設されている。コア部１２の周方向に並設された永久磁石１３上には、繊維強化樹脂（ＦＲＰ）からなる環状をなす保持リング１４が、当該コア部１２の軸方向に並設された永久磁石１３ごとに当該コア部１２と同軸をなしてそれぞれ嵌合している。 As shown in FIGS. 1 and 2, a cylindrical core portion 12 is provided coaxially at the central portion in the longitudinal direction on the outer circumference of the cylindrical shaft portion 11. A plurality of arc-shaped permanent magnets (PM) 13 are laid on the outer peripheral surface of the core portion 12 in the circumferential direction and the axial direction of the core portion 12 so as to cover the entire longitudinal central portion of the core portion 12. Has been done. On the permanent magnets 13 juxtaposed in the circumferential direction of the core portion 12, a retaining ring 14 made of a fiber reinforced resin (FRP) is arranged in an annular shape in each of the permanent magnets 13 juxtaposed in the axial direction of the core portion 12. The core portion 12 is coaxial with the core portion 12 and fitted to each other.

図１，２に示すように、永久磁石１３上の保持リング１４は、高分子材料であるエポキシ等の樹脂からなる保護体である保護層の保護コート１５で外周面及び端面が被覆されている。このような保護コート１５は、コア部１２に永久磁石１３を貼り付けて保持リング１４を嵌合させてから、粘性を有する液状の前記樹脂を保持リング１４上から塗布して炉内等で硬化させることにより、容易に設けることができる。 As shown in FIGS. 1 and 2, the retaining ring 14 on the permanent magnet 13 is covered with an outer peripheral surface and an end surface with a protective coat 15 of a protective layer which is a protective body made of a resin such as epoxy which is a polymer material. .. In such a protective coat 15, a permanent magnet 13 is attached to the core portion 12 to fit the holding ring 14, and then the viscous liquid resin is applied from above the holding ring 14 and cured in a furnace or the like. By making it, it can be easily provided.

このようにして保護コート１５を設けた本実施形態に係るロータ１０においては、保持リング１４の端面及び外周面が保護コート１５でコーティングされていることから、保持リング１４の端面に位置する繊維と樹脂との界面が外部へ露出することを防止できる。 In the rotor 10 according to the present embodiment in which the protective coat 15 is provided in this way, since the end face and the outer peripheral surface of the holding ring 14 are coated with the protective coat 15, the fibers located on the end face of the holding ring 14 are used. It is possible to prevent the interface with the resin from being exposed to the outside.

このため、本実施形態に係るロータ１０では、保持リング１４の外部露出する前記界面から保持リング１４の内部への空気の侵入を防止することができる。 Therefore, in the rotor 10 according to the present embodiment, it is possible to prevent air from entering the inside of the holding ring 14 from the interface exposed to the outside of the holding ring 14.

したがって、本実施形態に係るロータ１０によれば、保持リング１４の樹脂の酸化劣化を大きく抑制することができるので、保持リング１４の強度低下を大きく抑制することができる。 Therefore, according to the rotor 10 according to the present embodiment, it is possible to greatly suppress the oxidative deterioration of the resin of the retaining ring 14, and thus it is possible to greatly suppress the decrease in the strength of the retaining ring 14.

〈第二番目の実施形態〉
本発明に係る回転電機のＳＰＭ型ロータの第二番目の実施形態を図３，４に基づいて説明する。ただし、前述した実施形態と同様な部分については、前述した実施形態で用いた符号と同様な符号を用いることにより、前述した実施形態での説明と重複する説明を省略する。 <Second embodiment>
A second embodiment of the SPM type rotor of the rotary electric machine according to the present invention will be described with reference to FIGS. 3 and 4. However, for the same parts as those in the above-described embodiment, the same reference numerals as those used in the above-mentioned embodiments will be used, and the description overlapping with the above-mentioned embodiments will be omitted.

図３，４に示すように、前記永久磁石１３上の、前記コア部１２の軸方向で隣り合う保持リング１４の間及び当該軸方向で両端側に位置する保持リング１４の軸方向外側には、エポキシ等の樹脂やフッ素ゴム等のゴムのような高分子材料からなる保護体である複数の保護リング２５が当該保持リング１４の端面を塞ぐようにしてそれぞれ嵌合している。 As shown in FIGS. A plurality of protective rings 25, which are protective bodies made of a resin such as epoxy or a polymer material such as rubber such as fluororubber, are fitted so as to close the end faces of the holding ring 14.

つまり、前述した実施形態においては、コア部１２に永久磁石１３を貼り付けて保持リング１４を嵌合した後に、粘性を有する液状の前記樹脂を保持リング１４上から塗布して炉内等で硬化させることにより、保持リング１４の外周面及び端面を保護コート１５で覆うようにしたが、本実施形態においては、コア部１２に永久磁石１３を貼り付けた後に、保持リング１４と保護リング２５とを交互に嵌合することにより、保持リング１４の端面を保護リング２５で覆うようにしたのである。 That is, in the above-described embodiment, after the permanent magnet 13 is attached to the core portion 12 and the holding ring 14 is fitted, the viscous liquid resin is applied from above the holding ring 14 and cured in a furnace or the like. The outer peripheral surface and the end surface of the retaining ring 14 are covered with the protective coat 15, but in the present embodiment, after the permanent magnet 13 is attached to the core portion 12, the retaining ring 14 and the protective ring 25 are attached. By alternately fitting the retaining rings 14, the end face of the holding ring 14 is covered with the protection ring 25.

このため、本実施形態に係るロータ２０においては、保持リング１４の端面が保護リング２５で塞がれていることから、前述した実施形態に係るロータ１０の場合と同様に、保持リング１４の端面に位置する繊維と樹脂との界面が外部へ露出することを防止でき、保持リング１４の外部露出する前記界面から保持リング１４の内部へ空気が侵入することを防止できる。 Therefore, in the rotor 20 according to the present embodiment, since the end face of the holding ring 14 is closed by the protection ring 25, the end face of the holding ring 14 is similar to the case of the rotor 10 according to the above-described embodiment. It is possible to prevent the interface between the fiber and the resin located in the above from being exposed to the outside, and it is possible to prevent air from entering the inside of the holding ring 14 from the interface exposed to the outside of the holding ring 14.

したがって、本実施形態に係るロータ２０によれば、前述した実施形態の場合と同様に、保持リング１４の樹脂の酸化劣化を大きく抑制することができるので、保持リング１４の強度低下を大きく抑制することができる。 Therefore, according to the rotor 20 according to the present embodiment, the oxidative deterioration of the resin of the retaining ring 14 can be greatly suppressed as in the case of the above-described embodiment, so that the strength decrease of the retaining ring 14 is greatly suppressed. be able to.

また、前述した実施形態に係るロータ１０のような、前記樹脂の炉内での硬化や粘度による膜厚制御等の作業を不要にすることができる。 Further, it is possible to eliminate the work of curing the resin in the furnace and controlling the film thickness by the viscosity, as in the rotor 10 according to the above-described embodiment.

〈他の実施形態〉
なお、前述した第一番目の実施形態においては、粘性を有する液状の前記樹脂を保持リング１４上から塗布して炉内等で硬化させることにより、保持リング１４の外周面及び端面を保護コート１５で覆うようにしたが、他の実施形態として、前記保護コート１５に代えて、例えば、図５，６に示すように、水酸化アルミニウムやアルミナや窒化ホウ素等のように樹脂よりも高い熱伝導性を有する材料からなる充填材を含有する樹脂を前記保持リング１４の外周面及び端面にライニングすることにより、当該保持リング１４の外周面及び端面を保護体である保護層の保護ライナ３５で被覆したロータ３０とすれば、前述した第一番目の実施形態の保護コート１５よりも熱伝導性を高めることができるので、前述した第一番目の実施形態のロータ１０よりも放熱性能を高めることができ、非常に好ましい。 <Other embodiments>
In the first embodiment described above, the viscous liquid resin is applied from above the holding ring 14 and cured in a furnace or the like to protect the outer peripheral surface and the end face of the holding ring 14 with a protective coat 15. However, as another embodiment, instead of the protective coat 15, heat conduction higher than that of the resin such as aluminum hydroxide, alumina, boron nitride, etc., as shown in FIGS. By lining the outer peripheral surface and end face of the holding ring 14 with a resin containing a filler made of a material having a property, the outer peripheral surface and end face of the holding ring 14 are covered with a protective liner 35 of a protective layer which is a protective body. With the rotor 30, the heat conductivity can be improved as compared with the protective coat 15 of the first embodiment described above, so that the heat dissipation performance can be improved as compared with the rotor 10 of the first embodiment described above. It can be done and is very preferable.

同様に、前述した第二番目の実施形態の保護リング２５を、水酸化アルミニウムやアルミナや窒化ホウ素等のように樹脂やゴムよりも高い熱伝導性を有する材料からなる充填材を含有する樹脂やゴム等の高分子材料からなる保護リングとすれば、前述した第二番目の実施形態の場合よりも熱伝導性を高めて放熱性能を高めることができ、非常に好ましい。 Similarly, the protective ring 25 of the second embodiment described above may be a resin containing a filler made of a material having higher thermal conductivity than resin or rubber, such as aluminum hydroxide, alumina, or boron nitride. A protective ring made of a polymer material such as rubber is highly preferable because it can improve thermal conductivity and heat dissipation performance as compared with the case of the second embodiment described above.

本発明に係る回転電機の表面永久磁石型ロータは、保持リングの酸化劣化を大きく抑制して、保持リングの強度低下を大きく抑制することができるので、産業上、極めて有益に利用することができる。 The surface permanent magnet type rotor of the rotary electric machine according to the present invention can greatly suppress the oxidative deterioration of the retaining ring and greatly suppress the decrease in the strength of the retaining ring, and thus can be extremely beneficially used industrially. ..

１０ ロータ
１１ 軸部
１２ コア部
１３ 永久磁石
１４ 保持リング
１５ 保護コート
２０ ロータ
２５ 保護リング
３０ ロータ
３５ 保護ライナ 10 Rotor 11 Shaft 12 Core 13 Permanent magnet 14 Retaining ring 15 Protective coat 20 Rotor 25 Protective ring 30 Rotor 35 Protective liner

Claims (2)

コア部の外周面に複数の永久磁石を布設して、当該永久磁石を当該コア部の外周面に押え付けるように繊維強化樹脂からなる保持リングを複数嵌合することにより、当該永久磁石を当該コア部に当該保持リングで固定した回転電機の表面永久磁石型ロータにおいて、
前記保持リングの端面を覆う高分子材料からなる保護体が設けられており、
前記保護体が、前記コア部の軸方向で隣り合う前記保持リングの間及び当該軸方向両端側に位置する前記保持リングの軸方向外側に位置するように前記コアの前記永久磁石上にそれぞれ嵌合して当該保持リングの端面を塞ぐ複数の保護リングである
ことを特徴とする回転電機の表面永久磁石型ロータ。 By laying a plurality of permanent magnets on the outer peripheral surface of the core portion and fitting a plurality of retaining rings made of fiber reinforced resin so as to press the permanent magnets against the outer peripheral surface of the core portion, the permanent magnets can be attached. In the surface permanent magnet type rotor of the rotary electric machine fixed to the core part with the retaining ring,
A protective body made of a polymer material that covers the end face of the retaining ring is provided .
The protective body is fitted on the permanent magnet of the core so as to be located between the retaining rings adjacent to each other in the axial direction of the core portion and on the axially outer side of the retaining ring located on both ends in the axial direction. A surface permanent magnet type rotor of a rotating electric machine, characterized in that it is a plurality of protective rings that collectively close the end face of the retaining ring. 請求項１記載の回転電機の表面永久磁石型ロータにおいて、
前記保護体が、前記高分子材料よりも高い熱伝導性を有する材料からなる充填材を含有するものである
ことを特徴とする回転電機の表面永久磁石型ロータ。 In the surface permanent magnet type rotor of the rotary electric machine according to claim 1 ,
A surface permanent magnet type rotor of a rotary electric machine, characterized in that the protective body contains a filler made of a material having higher thermal conductivity than the polymer material.
JP2018104710A 2018-05-31 2018-05-31 Surface permanent magnet type rotor of rotary electric machine Active JP7043979B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018104710A JP7043979B2 (en) 2018-05-31 2018-05-31 Surface permanent magnet type rotor of rotary electric machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2018104710A JP7043979B2 (en) 2018-05-31 2018-05-31 Surface permanent magnet type rotor of rotary electric machine

Publications (2)

Publication Number Publication Date
JP2019213264A JP2019213264A (en) 2019-12-12
JP7043979B2 true JP7043979B2 (en) 2022-03-30

Family

ID=68847139

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2018104710A Active JP7043979B2 (en) 2018-05-31 2018-05-31 Surface permanent magnet type rotor of rotary electric machine

Country Status (1)

Country Link
JP (1) JP7043979B2 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000134839A (en) 1998-10-22 2000-05-12 Hitachi Ltd Permanent-magnet rotor and electric machine therewith
JP2001086677A (en) 1999-09-13 2001-03-30 Hitachi Ltd Permanent-magnet synchronous motor
JP2001169487A (en) 1999-12-07 2001-06-22 Aisin Seiki Co Ltd Permanent magnet rotor, and method of manufacturing permanent magnet rotor
DE102007014192A1 (en) 2007-03-24 2008-06-05 Täubner, Frank, Dr. Running device producing method for electrical machine, involves polishing magnets such that forcing of bandage is effected and is removed after pressing, where magnets are arranged in outer circumference of runner package device
JP2011109774A (en) 2009-11-16 2011-06-02 Mitsubishi Electric Corp Rotating electric machine
WO2017175534A1 (en) 2016-04-07 2017-10-12 株式会社 明電舎 Permanent magnet rotor for rotary electric machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0349544A (en) * 1989-07-14 1991-03-04 Aichi Emerson Electric Co Ltd Resin-molded rotor
JPH07284237A (en) * 1994-04-06 1995-10-27 Fanuc Ltd Rotor of permanent magnet motor
JPH10210691A (en) * 1997-01-21 1998-08-07 Isuzu Ceramics Kenkyusho:Kk Rotor structure for generator and manufacture thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000134839A (en) 1998-10-22 2000-05-12 Hitachi Ltd Permanent-magnet rotor and electric machine therewith
JP2001086677A (en) 1999-09-13 2001-03-30 Hitachi Ltd Permanent-magnet synchronous motor
JP2001169487A (en) 1999-12-07 2001-06-22 Aisin Seiki Co Ltd Permanent magnet rotor, and method of manufacturing permanent magnet rotor
DE102007014192A1 (en) 2007-03-24 2008-06-05 Täubner, Frank, Dr. Running device producing method for electrical machine, involves polishing magnets such that forcing of bandage is effected and is removed after pressing, where magnets are arranged in outer circumference of runner package device
JP2011109774A (en) 2009-11-16 2011-06-02 Mitsubishi Electric Corp Rotating electric machine
WO2017175534A1 (en) 2016-04-07 2017-10-12 株式会社 明電舎 Permanent magnet rotor for rotary electric machine

Also Published As

Publication number Publication date
JP2019213264A (en) 2019-12-12

Similar Documents

Publication Publication Date Title
JP5820046B2 (en) Rotor of electric motor having magnet holding structure and electric motor having the same
JP6498669B2 (en) Stator and rotor for electric motor
JP7470507B2 (en) Electrical machines, especially for vehicles
DK2791471T3 (en) ROTATING MACHINE INCLUDING A MACHINE ROTOR WITH A COMPOSITION IMPORTER AND A METAL SHAFT PART
US9729020B2 (en) Motor stator having channels used for cooling and method of providing the channels
US10770947B2 (en) Method for manufacturing a motor
JP6904833B2 (en) Rotor and rotating machine
TW201203813A (en) Motor with heat pipe
CN103368300A (en) Motor permanent magnet fixing structure, motor permanent magnet fixing method and motor comprising the structure
CN103312069A (en) Fixed structure and fixing method of motor permanent magnets and motor comprising motor permanent magnet fixed structure
JP7043979B2 (en) Surface permanent magnet type rotor of rotary electric machine
CN202475068U (en) Motor permanent magnet fixing structure and motor comprising same
JP6677626B2 (en) Electric motor
JP2013021811A (en) Rotor of rotary electric machine
JP6693917B2 (en) Rotor and rotating electric machine
JP2010172095A (en) Motor
JP6624223B2 (en) Rotating electric machine
JP7064850B2 (en) Rotor and motor
JP2016144270A (en) Cooling structure of rotary electric machine
US20150054362A1 (en) Method and Device for Sensorless Control of a Separately Excited Synchronous Machine
CN209072217U (en) Stator and motor
TWI599147B (en) Synchronous generator, in particular multipole synchronous annular generator of a direct-drive wind turbine, and wind turbine having the same
CN211018560U (en) Rotor structure, motor and centrifuge with same
JP2016100974A (en) Inner rotor motor, rotor for the same, and method of manufacturing rotor
JP2020112114A5 (en)

Legal Events

Date Code Title Description
RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20190530

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20190529

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20200917

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20210728

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20210803

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20210927

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20220215

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20220228

R150 Certificate of patent or registration of utility model

Ref document number: 7043979

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150