JPS58195461A - Rotor with permanent magnet and manufacture thereof - Google Patents
Rotor with permanent magnet and manufacture thereofInfo
- Publication number
- JPS58195461A JPS58195461A JP57078541A JP7854182A JPS58195461A JP S58195461 A JPS58195461 A JP S58195461A JP 57078541 A JP57078541 A JP 57078541A JP 7854182 A JP7854182 A JP 7854182A JP S58195461 A JPS58195461 A JP S58195461A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- rotor core
- rotor
- valve ring
- magnet valve
- 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.)
- Granted
Links
Classifications
-
- 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
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset magnets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は例えば同期電動機に用いられる永久磁石付回転
子およびその製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a permanent magnet rotor used, for example, in a synchronous motor, and a method for manufacturing the same.
例、ｔ ［マニピユレータのサーＩモータトシテ直流電
動機と交流電動機があるが、現在は交流電動機に比べて
制御が容易な、直流電動機がその主流をしめている。Example, t [Manipulator's I Motor] There are direct current motors and alternating current motors, but currently, direct current motors are the mainstream, as they are easier to control than alternating current motors.
しかし、直流電動機は整流子及びブラシ損傷の問題が有
り、このため、＾応答性が要求される場合のフォーシン
グ運転すなわち過大トルクを発生させる運転を行うと、
ブラシと整流子間に火花が発生したり、これにともない
整流子損傷の間組があシ事故の原因と成っている。この
ようなことから、通常直流電動機の場合瞬時最大トルク
は定格トルクの３００畳が限界である。However, DC motors have the problem of commutator and brush damage, and for this reason, if you perform forcing operation, that is, operation that generates excessive torque when responsiveness is required,
Sparks are generated between the brushes and the commutator, which can cause damage to the commutator and cause accidents. For this reason, the instantaneous maximum torque of a DC motor is normally limited to the rated torque of 300 tatami.
また、直流電ＭＪＪ機はブラシのメインテナンスの必要
性があることから経済的にも使用面でも不利である。Further, since the DC electric MJJ machine requires brush maintenance, it is disadvantageous both economically and in terms of use.
ｊｌ近％に・母ワーエレクトロニクスの見違によりブラ
シレスの交流電動機例えば同期電動機又は誘導電動機を
インバータ で駆動する事か容易となり、且経済的にも
有利と成９つつある。Due to the change in motherboard electronics, it has become easy and economically advantageous to drive brushless AC motors, such as synchronous motors or induction motors, with inverters.
この様に同期電動機の可変速運転が自由に行え得るなら
は、上記直流電動１機の欠点社すべて解決出来るはか９
でなく、３００１１以上のフオニシング運転も自由に行
い樽、るので、理想に近い□・し
ものといえる。If variable speed operation of a synchronous motor could be performed freely in this way, would it be possible to solve all of the drawbacks of a single DC motor?9
In addition, it can freely perform fonishing operations of 30011 or higher, so it can be said to be close to the ideal.
前記同期電動機として種々あるが、このうち回転子外壁
に永久磁石を有する永久磁石式同期電動機は以下に述べ
ることから高速運転及び慈加減速運転が困難でめった。There are various types of synchronous motors, but among these, permanent magnet type synchronous motors having permanent magnets on the outer wall of the rotor have been difficult to operate at high speed and during acceleration/deceleration as described below.
すなわち、永久磁石は本来もろいので、回転子鉄心外壁
上に取付ける事は好ましく゛ないということもあり、多
くの技術上の制約条件が有ったからである。しかし最近
永久磁石の性能も向上し、回転子鉄心上に取付は磁極と
する事によシ性能の良い電動機を作る事が出来る様に成
ったが、永久磁石を回転子鉄心外壁に装着する技術的問
題は十分解決されていない。父、この他多くの場合強力
な永久磁石は焼結形のいわゆるセラミックマグネットで
あり、これを回転子鉄心上に接着剤にて接層固定する場
合、熱硬化性有機接着剤を用いるので、加熱中、永久磁
石を所定の位置に固定する作業はかな）困難をともない
作業性が悪い。That is, since permanent magnets are inherently fragile, it was not desirable to attach them to the outer wall of the rotor core, and there were many technical constraints. However, the performance of permanent magnets has recently improved, and it has become possible to create motors with good performance by attaching magnetic poles to the rotor core. issues have not been fully resolved. Father, in many other cases, strong permanent magnets are sintered ceramic magnets, and when they are fixed on the rotor core with adhesive, a thermosetting organic adhesive is used, so heating is required. The work of fixing the permanent magnet in a predetermined position is difficult and has poor workability.
また、永久磁石を回転子に用いる場合には、振、、１
動抑制のための□′ニシン・母−が取付けられないので
、己１
安定に運転する事′：如因難であった。この様１に強力
な永久磁石材料が出来たにもかかわらず永久 ｌ
磁石付回転子は十分有効に活用されていないのが実情で
ある。Furthermore, when permanent magnets are used in the rotor, it is difficult to operate the rotor in a stable manner because it is not possible to attach a base to suppress vibrations. In this way, despite the creation of a strong permanent magnetic material, the permanent
The reality is that rotors with magnets are not used effectively enough.
本発明はこめような事情にかんがみてなされたもので、
サーＩモーメに要求される高加減速、且、高速運転に対
してはマグネ、トに動く遠心力及び加減速時のせん断応
力に対し十分耐えられ、且振動抑制の効果が得られる永
久磁石付回転子およびマグネットの位置決めとこの接着
作業が容易な永久磁石付回転子の製造方法を提供するこ
とを目的とする。The present invention was made in view of the complicated circumstances.
For the high acceleration/deceleration and high-speed operation required for thermometers, the magnet is equipped with a permanent magnet that can sufficiently withstand the centrifugal force and shear stress during acceleration/deceleration, and has the effect of suppressing vibration. It is an object of the present invention to provide a method for manufacturing a rotor with permanent magnets in which positioning of the rotor and magnets and bonding work thereof are easy.
本発明の第１番目は上記目的を達成するたべ回転子鉄心
の両端部に複数個の突片を有するマグネット揶えリンク
を取着し、このマグネット押えリングの突片間に磁極を
構成する永久磁石の端部°をはめこみ、永久磁石を回転
子叡心に取着させたものである。The first aspect of the present invention is to achieve the above object by attaching a magnetic clamping link having a plurality of protrusions to both ends of the rotor core, and forming a permanent magnetic pole between the protrusions of the magnetic clamping ring. A permanent magnet is attached to the rotor core by fitting the end of the magnet into the rotor.
本発ゆ」の第２番目は上記目的を達成するため、予め１
１転子鉄心の両端部にマグネ、ト押えリングを獣舎固定
し、このマグネット押えリングの突片間及びリング側面
およびこれらにより囲まれる回転子鉄心の壁面に接着剤
を塗布して永久磁石を接着させる方法である。In order to achieve the above purpose, the second part of the
1. Fix a magnet and a holding ring to both ends of the trochanter core, and apply adhesive between the projections of the magnet holding ring, on the side of the ring, and on the wall of the rotor core surrounded by these to create a permanent magnet. This is a method of adhesion.
一以下、本発明の一実施例について図面を参照して貌明
する。Ｉａ１図に示すように回転軸１と一体構造の回転
子鉄心２の軸方向両端部に、非ｆｆｌ性で導電性金属を
ダイカスト成形してなる永久磁石押えリング３が焼はめ
、又は圧入によυ紙台固定されている。この永久磁石押
えリング３は、第２図のように円形リング３ａの片側縁
部に軸方向に蝙びる複数個の突片３ｂが形成され、この
突片３ｂは永久磁石を所定の位置に取付ける際の間隔片
の作用及び永久磁石の側面とを接着−固定するものであ
る。この様な構造の永久磁石押えリング３を回転子鉄心
２の外壁に装着するにはこの両端より、前記突片３ｂ両
端より向い合わせ、かつ対向する両側の突片ｓｂが同−
位置つまり谷突片３ｂの中心線が同−直辿
線上に一致さすて嵌合固定する。このようにすることに
より、永久磁石押えリング３０円形すング３ａおよび突
片３ｂは回転子鉄心２の畳面と強く接触している。An embodiment of the present invention will be explained below with reference to the drawings. As shown in Figure Ia1, permanent magnet retaining rings 3 formed by die-casting a non-ffl conductive metal are attached to both axial ends of the rotor core 2, which is integrally constructed with the rotating shaft 1, by shrink-fitting or press-fitting. υThe paper stand is fixed. As shown in FIG. 2, this permanent magnet holding ring 3 has a plurality of protrusions 3b formed on one side edge of a circular ring 3a, which extend in the axial direction, and these protrusions 3b attach the permanent magnet to a predetermined position. The action of the spacer and the side surface of the permanent magnet are bonded and fixed. In order to attach the permanent magnet retaining ring 3 having such a structure to the outer wall of the rotor core 2, the projecting pieces 3b are faced from both ends thereof, and the opposing projecting pieces sb on both sides are the same.
The position, that is, the center line of the valley protrusion piece 3b is aligned with the same direct trace line, and the fitting is fixed. By doing so, the circular tongues 3a and protrusions 3b of the permanent magnet retaining ring 30 are in strong contact with the folded surface of the rotor core 2.
次に永久磁石弁えリング３を回転子鉄心２に嵌合固定し
た状態で回転子鉄心２の壁面および永久磁石弁えリング
３の突片３ｂ相互間に形成されるくほみＪｅ（円形リン
グＪａＯ４ｌ１面）とこれに連接する突片ｓｂｏ＠面に
熱硬化性の接着剤例えはアラルダイト（チパガイキ社商
品名うが塗布され、互いに対向する永久磁石弁えリング
３のくほみ３ｃに永久磁石４の両端を挿入して永久磁石
４を回転子鉄心２に接着する。このようにして永久磁石
４を他の永久磁石弁えリング３の対向するくほみ３Ｃに
もすべて挿入接着するが、各永久磁石４の接着−に前記
回転子鉄□
心２に錬布した接着剤と同一の！！着剤を塗布し・；１
１：、、
でもよい。 、：・・１゜１
このように本発明による永久磁石付回転子は、回転子鉄
心２の両端部に永久磁石弁えリング３が嵌合固定され、
この永久磁石弁えリンダ３の突片３ｂ相瓦のくほみ３Ｃ
に永久磁石４の両端がはめられ、接着されているので、
従来の回転子鉄心に永久磁石を平面的に単に接着するも
のに比べて遠心力による永久磁石５の飛散防止のみなら
ず急加減速的に生ずる永久磁石５のせん耐応力に対して
も強力に補強される。このことは第１図のＡ−Ａ’、Ｂ
−Ｂ’オよびｃ −ｃ’線に洞う断面図を示す第３図特
に（ｂ）に示すように永久磁石５が間隔片の作用をかね
ぇ永久磁石弁えリング３の突片３ｂ間に永久磁石５の平
板面のみならず１４１Ｉ面が接着固定されていることか
らも明らかである。Next, with the permanent magnet valve ring 3 fitted and fixed to the rotor core 2, the holes Je (circular ring A thermosetting adhesive such as Araldite (trade name of Chipagaiki Co., Ltd.) is applied to the JaO4l1 surface) and the sbo@ surface of the protrusion connected thereto, and a permanent magnet is applied to the groove 3c of the permanent magnet valve ring 3 facing each other. 4 and glue the permanent magnet 4 to the rotor core 2.In this way, all the permanent magnets 4 are also inserted and glued into the opposing corners 3C of the other permanent magnet valve ring 3. Apply the same adhesive as the adhesive applied to the rotor iron core 2 to the adhesive of each permanent magnet 4;
1: ,, is fine. , :...1゜1 As described above, in the rotor with permanent magnet according to the present invention, the permanent magnet valve ring 3 is fitted and fixed to both ends of the rotor core 2,
The projection piece 3b of this permanent magnet valve cylinder 3, the corner of the phase tile 3C
Since both ends of the permanent magnet 4 are fitted and glued,
Compared to the conventional method in which permanent magnets are simply glued flatly to the rotor core, this method not only prevents the permanent magnets 5 from scattering due to centrifugal force but also resists the shear stress of the permanent magnets 5 caused by sudden acceleration and deceleration. Reinforced. This is true for A-A' and B in Figure 1.
Figure 3 shows a cross-sectional view taken along lines -B'o and c-c'. Particularly, as shown in (b), the permanent magnet 5 acts as a spacing piece between the projections 3b of the permanent magnet valve ring 3. This is clear from the fact that not only the flat plate surface of the permanent magnet 5 but also the 141I surface is adhesively fixed.
又、導電性の永久磁石弁えリング３が鉄心の両側に設け
られているので、タービン発電機に有するダン・母−（
膏、、、ＩＩｉりのごとき部分電気ダン′１．１．″
・９−として作用し、□運転時の振動が抑制され１２．
□、□、―・′１・：す、６゜
さらに本発明による永久磁石付回転子の製造
１方法は、円形リンダ３ａに軸方向に砥びる突片３ｂが
形成され九永久磁石押えリング３を予め回転子鉄心１の
両端部に、対向する永久磁石弁えリング３の突片３ｂが
同一線上に一致するようにして嵌合固定し、その後Ｎ１
１ｌｌの永久磁石弁たので、永久磁石４の位置決めがき
わめて容易でしかも永久磁石４を高温加熱状Ｍ（例えば
２１０℃）での定位置接着作業がきわめて容易となる事
も本発明の効果である。In addition, since the conductive permanent magnet valve ring 3 is provided on both sides of the iron core, it is possible to
1.1. ″ ・Acts as 9-, suppresses vibration during operation 12.
□, □, -・'1・:su, 6゜Furthermore, manufacturing a rotor with permanent magnets according to the present invention
One method is to form a circular cylinder 3a with an axially sharpened protrusion 3b, place the permanent magnet retainer ring 3 on both ends of the rotor core 1 in advance, and attach the opposing protrusions 3b of the permanent magnet valve ring 3 to the same Fit and fix it so that it matches the line, then N1
Since it is a 1 liter permanent magnet valve, it is extremely easy to position the permanent magnet 4, and it is also an advantage of the present invention that it is extremely easy to bond the permanent magnet 4 in place at a high temperature heating state M (for example, 210° C.). .
なお、本発明の永久磁石付回転子は同期電動機のみなら
ず同期発電機に適用できることはいうまでもない。It goes without saying that the permanent magnet rotor of the present invention can be applied not only to synchronous motors but also to synchronous generators.
以上述べた様に不発明によれば永久磁石の飛散防止には
特に有効であり、且、急加減速時に生ずる永久磁石のせ
ん耐応力に対しても強力に補強され、振動を抑制しょシ
安定し九運転を行う事ができ、さらに永久磁石の位置決
めと撤膚作業が容易な永久磁石付回転子およびその製造
方法を提供できる。As described above, the invention is particularly effective in preventing permanent magnets from scattering, and is also strongly reinforced against the shear stress of permanent magnets that occurs during sudden acceleration and deceleration, suppressing vibration and providing stability. It is possible to provide a rotor with permanent magnets that can perform continuous operation, and also allows easy positioning and removal of permanent magnets, and a method for manufacturing the rotor.
第１図は本発明による永久磁石付回転子の一夾施例を示
す斜視図、第２Ｌｉ！Ａは同実施例の永久磁石弁えリン
グの一例をかす斜視図、第３図（ａ）。
（ｂ） 、 （ｅ）ｔユそれぞれ第１図のＡ −Ａ’線
、Ｂ−Ｂ’線。
ｃ −ｃ’Ｈに市って切断し九矢印方向に見た断面図で
娶る。
Ｊ・・・回転軸、２・・・回転子鉄心、３・・・円形リ
ング３ａと突片３ｂからなる永久磁石弁えリング、４・
・・永久磁石。
出−人代理人 弁理士 鈴 江 武 彦第１図
第２図FIG. 1 is a perspective view showing one embodiment of a rotor with permanent magnets according to the present invention, and 2nd Li! A is a perspective view of an example of the permanent magnet valve ring of the same embodiment, FIG. 3(a). (b) and (e) line A-A' and line B-B' in FIG. 1, respectively. Cut along c-c'H and see the cross-sectional view in the direction of arrow 9. J... Rotating shaft, 2... Rotor core, 3... Permanent magnet valve ring consisting of circular ring 3a and protrusion 3b, 4...
··permanent magnet. Representative Patent Attorney Takehiko Suzue Figure 1 Figure 2
Claims (2)
この回転子鉄心の軸方向の両端部に低鉄され、かつ前記
回転子鉄心の壁面に沿って中央部方向に延びる複数個の
突片が等間隔に形成された２個の導電性の永久磁石弁え
リングと、この一方の永久磁石弁えリングの隣接する突
片間のくほみにその一端が、ま九他方の永久磁石弁えリ
ングの隣接する突片間のくほみにその他端がはめこまれ
、かつ前記回転子鉄心の壁面に取着され磁極を構成する
複数個の永久磁石とからなる永久磁石付回転子。(1) A rotor core configured integrally with the rotating shaft,
Two electrically conductive permanent magnets are provided at both ends of the rotor core in the axial direction, and a plurality of protrusions extending toward the center along the wall surface of the rotor core are formed at equal intervals. One end of the valve ring is located in the gap between the adjacent protrusions of one permanent magnet valve ring, and the other end is located in the gap between the adjacent protrusions of the other permanent magnet valve ring. A rotor with permanent magnets, which comprises a plurality of permanent magnets that are fitted into the rotor core and are attached to the wall surface of the rotor core to constitute magnetic poles.
、円形リングの片側縁部において軸方向に延びる複数個
の突片が形成された導電性永久磁石弁えリングを、この
突片を中央部に向けかつ両側の永久磁石弁えリングの各
突片が同−縁上に位置するように嵌合固定する第１の工
程と、この第１工程で嵌合固定された一方の永久磁石弁
えリングの＃接する突片間、これと対向する他方の永久
磁石弁えリングの突片間およびこの対向する突片を結ぶ
線によりかこまれる前記回転子鉄心の壁（表）面に接着
剤を塗布して磁極を構成する永久磁石を接着する第２の
工程とからなる永久磁石付回転子の製造方法。(2) A conductive permanent magnet valve ring, which has a plurality of protrusions extending in the axial direction on one side edge of a circular ring, is attached to both axial ends of the rotor core attached to the rotating shaft. A first step of fitting and fixing the pieces facing the center and ensuring that the projecting pieces of the permanent magnet valve ring on both sides are positioned on the same edge, and one of the pieces that was fitted and fixed in this first step. Between the contacting protrusions of the permanent magnet valve ring, between the opposing protrusions of the other permanent magnet valve ring, and on the wall (front) surface of the rotor core surrounded by the line connecting these opposing protrusions. A method for manufacturing a rotor with permanent magnets, which comprises a second step of applying an adhesive to bond permanent magnets forming magnetic poles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57078541A JPS58195461A (en) | 1982-05-11 | 1982-05-11 | Rotor with permanent magnet and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57078541A JPS58195461A (en) | 1982-05-11 | 1982-05-11 | Rotor with permanent magnet and manufacture thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58195461A true JPS58195461A (en) | 1983-11-14 |
| JPS6259539B2 JPS6259539B2 (en) | 1987-12-11 |
Family
ID=13664766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57078541A Granted JPS58195461A (en) | 1982-05-11 | 1982-05-11 | Rotor with permanent magnet and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58195461A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6135573U (en) * | 1984-08-06 | 1986-03-05 | 株式会社東芝 | Rotor with permanent magnet |
| JPS6146151A (en) * | 1984-08-09 | 1986-03-06 | Toshiba Corp | Manufacture of rotor with permanent magnet |
| FR2629958A1 (en) * | 1988-03-12 | 1989-10-13 | Frankl & Kirchner | ROTOR FOR ELECTRIC MACHINE EXCITED BY PERMANENT MAGNETS |
| US5140210A (en) * | 1988-07-07 | 1992-08-18 | Mitsubishi Denki K.K. | Permanent-magnet type dynamoelectric machine rotor |
| JP2007209169A (en) * | 2006-02-03 | 2007-08-16 | Jtekt Corp | Segment magnet rotor fixing structure and rotary machine |
| WO2012089554A2 (en) | 2010-12-29 | 2012-07-05 | Arcelik Anonim Sirketi | A rotor for a permanent magnet synchronous motor |
| CN103178631A (en) * | 2011-12-26 | 2013-06-26 | 德昌电机(深圳)有限公司 | Motor rotor |
| CN106712423A (en) * | 2015-08-03 | 2017-05-24 | 江苏华源防爆电机有限公司 | Rotor-surface-mounted type flameproof permanent-magnet synchronous motor |
| CN110474457A (en) * | 2018-05-12 | 2019-11-19 | 汤秉辉 | Motor |
| CN110994844A (en) * | 2019-12-30 | 2020-04-10 | 沈阳工业大学 | High-speed permanent magnet motor rotor with shielding layer |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0328893U (en) * | 1989-07-28 | 1991-03-22 | ||
| JPH03231044A (en) * | 1990-02-06 | 1991-10-15 | Fujitsu Ten Ltd | Speaker installation method in sound field control system for automobile |
| CN104852531A (en) * | 2015-05-27 | 2015-08-19 | 日本电产凯宇汽车电器（江苏）有限公司 | Technology for fixing magnetic tile of AMT motor |
-
1982
- 1982-05-11 JP JP57078541A patent/JPS58195461A/en active Granted
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6135573U (en) * | 1984-08-06 | 1986-03-05 | 株式会社東芝 | Rotor with permanent magnet |
| JPS6146151A (en) * | 1984-08-09 | 1986-03-06 | Toshiba Corp | Manufacture of rotor with permanent magnet |
| FR2629958A1 (en) * | 1988-03-12 | 1989-10-13 | Frankl & Kirchner | ROTOR FOR ELECTRIC MACHINE EXCITED BY PERMANENT MAGNETS |
| US5140210A (en) * | 1988-07-07 | 1992-08-18 | Mitsubishi Denki K.K. | Permanent-magnet type dynamoelectric machine rotor |
| JP2007209169A (en) * | 2006-02-03 | 2007-08-16 | Jtekt Corp | Segment magnet rotor fixing structure and rotary machine |
| WO2012089554A2 (en) | 2010-12-29 | 2012-07-05 | Arcelik Anonim Sirketi | A rotor for a permanent magnet synchronous motor |
| CN103404000A (en) * | 2010-12-29 | 2013-11-20 | 阿塞里克股份有限公司 | A rotor for a permanent magnet synchronous motor |
| CN103178631A (en) * | 2011-12-26 | 2013-06-26 | 德昌电机(深圳)有限公司 | Motor rotor |
| CN103178631B (en) * | 2011-12-26 | 2017-08-08 | 德昌电机(深圳)有限公司 | Rotor |
| CN106712423A (en) * | 2015-08-03 | 2017-05-24 | 江苏华源防爆电机有限公司 | Rotor-surface-mounted type flameproof permanent-magnet synchronous motor |
| CN110474457A (en) * | 2018-05-12 | 2019-11-19 | 汤秉辉 | Motor |
| CN110994844A (en) * | 2019-12-30 | 2020-04-10 | 沈阳工业大学 | High-speed permanent magnet motor rotor with shielding layer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6259539B2 (en) | 1987-12-11 |
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