JP2543165Y2 - Permanent magnet rotor - Google Patents
Permanent magnet rotorInfo
- Publication number
- JP2543165Y2 JP2543165Y2 JP5000591U JP5000591U JP2543165Y2 JP 2543165 Y2 JP2543165 Y2 JP 2543165Y2 JP 5000591 U JP5000591 U JP 5000591U JP 5000591 U JP5000591 U JP 5000591U JP 2543165 Y2 JP2543165 Y2 JP 2543165Y2
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- iron core
- magnet rotor
- outer peripheral
- magnet piece
- 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.)
- Expired - Lifetime
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 41
- 230000002093 peripheral effect Effects 0.000 claims description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000010030 laminating Methods 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は多数の鋼板を積層した円
柱状の鉄心の内部に、複数の断面扇状の界磁用永久磁石
片を外側の曲面が鉄心の外周面に近接するように組み込
んだ永久磁石回転子関する。BACKGROUND OF THE INVENTION The present invention incorporates a plurality of field permanent magnet pieces having a sector-like cross section into a cylindrical iron core in which a large number of steel plates are laminated such that the outer curved surface is close to the outer peripheral surface of the iron core. Regarding permanent magnet rotor.
【０００２】[0002]
【従来の技術】一般に鋼板を多数積層して円柱状の鉄心
を形成し、この鉄心の内部に複数の断面扇状の界磁用永
久磁石片を組み込んだ永久磁石回転子において、界磁用
永久磁石片の外側の曲面を鉄心の外周を形成する円と同
心的な円弧によって形成した永久磁石回転子が知られて
いる。2. Description of the Related Art Generally, in a permanent magnet rotor in which a plurality of steel plates are laminated to form a columnar iron core and a plurality of permanent magnet pieces for a sector having a sectoral cross section are incorporated in the core, a permanent magnet for the field is used. 2. Description of the Related Art There is known a permanent magnet rotor in which a curved surface outside a piece is formed by an arc concentric with a circle forming the outer periphery of an iron core.
【０００３】図４は、上記従来の永久磁石回転子の一部
を分解して示している。永久磁石回転子２１の鉄心２２
は外周近傍に複数の磁石片用開口を有する多数の円形鋼
板２３を積層して形成され、全体として円柱状の形態を
有している。この鉄心に４つの断面扇状の永久磁石片２
４が永久磁石回転子２１の磁石片用開口に挿入されてい
る。４つの永久磁石片２４のうち２つは、外側の曲面が
Ｎ極に着磁され、内側の曲面がＳ極に着磁されている。
残る２つの永久磁石片２４は反対に、外側の曲面がＳ極
に着磁され、内側の曲面がＮ極に着磁されている。この
ように反対に着磁された永久磁石片２４を交互に配置す
ることにより、永久磁石回転子２１の外周面は周方向に
交互にＮ極とＳ極の磁性を示す。図５は従来の永久磁石
回転子２１の断面の一部を拡大して示している。永久磁
石回転子２１の断面全体は、図中に示す回転子の中心線
Ｂ−Ｂ´に関して対称であって、中心線Ｂ−Ｂ´の下側
の断面は図示を省略している。図５において鉄心２２の
外周面は、鉄心２２の回転中心Ｏ´1 を中心とする半径
ｒ´1 の円によって軌定されている。一方、永久磁石片
２４の外側の曲面は、前記回転中心Ｏ´1を中心とする
半径ｒ´2 の円弧によって軌定されている。永久磁石片
２４の内側の曲面は、前記回転中心Ｏ´1 を中心とする
半径ｒ´3 の円弧によって軌定されている。このような
形状の永久磁石片２４が鉄心２２の外周面の内側に沿っ
て配置されているので、鉄心２２は永久磁石片２４の外
側曲面を覆ってこれを保持する外周リング部ａ´と、永
久磁石片２４の間に介在する継手部ｂ´と、前記外周リ
ング部ａ´と継手部ｂ´とを連結する連結部ｃ´とを有
している。永久磁石片２４の外側曲面と内側曲面は鉄心
２２の外周面と同心的配置され、かつ、永久磁石片２４
の磁力の減少をできる限り防止するために、上記鉄心２
２の外周リング部ａ´は細い等しい幅を有し、連結部ｃ
´は小さな断面積を有している。FIG. 4 is an exploded view of a part of the conventional permanent magnet rotor. Iron core 22 of permanent magnet rotor 21
Is formed by laminating a large number of circular steel plates 23 having a plurality of magnet piece openings near the outer periphery, and has a columnar shape as a whole. This iron core has four permanent magnet pieces 2 with a fan-shaped cross section.
4 is inserted into the opening for the magnet piece of the permanent magnet rotor 21. Two of the four permanent magnet pieces 24 have an outer curved surface magnetized to the N pole and an inner curved surface magnetized to the S pole.
On the contrary, the remaining two permanent magnet pieces 24 have their outer curved surfaces magnetized to the S pole and their inner curved surfaces magnetized to the N pole. By alternately arranging the oppositely magnetized permanent magnet pieces 24 in this manner, the outer peripheral surface of the permanent magnet rotor 21 exhibits N-pole and S-pole magnetism alternately in the circumferential direction. FIG. 5 shows a part of a cross section of the conventional permanent magnet rotor 21 in an enlarged manner. The entire cross section of the permanent magnet rotor 21 is symmetrical with respect to the center line BB 'of the rotor shown in the figure, and the cross section below the center line BB' is not shown. The outer peripheral surface of the iron core 22 in FIG. 5 is軌定by a circle of radius r'1 around the rotation center O'1 of the core 22. On the other hand, the outer curved surface of the permanent magnet pieces 24 are軌定by an arc of a radius r'2 around the rotation center O'1. Inner curved surface of the permanent magnet pieces 24 are軌定by an arc of a radius r'3 around the rotation center O'1. Since the permanent magnet pieces 24 having such a shape are arranged along the inside of the outer peripheral surface of the iron core 22, the iron core 22 covers an outer curved surface of the permanent magnet piece 24 and holds it, and an outer ring portion a ′. It has a joint part b 'interposed between the permanent magnet pieces 24 and a connecting part c' for connecting the outer peripheral ring part a 'and the joint part b'. The outer curved surface and the inner curved surface of the permanent magnet piece 24 are arranged concentrically with the outer peripheral surface of the iron core 22, and the permanent magnet piece 24
In order to prevent the magnetic force from decreasing as much as possible,
The two outer ring portions a 'have a narrow equal width and the connecting portion c
'Has a small cross-sectional area.
【０００４】[0004]
【考案が解決しようとする課題】しかしながら上記構造
の従来の永久磁石回転子では、永久磁石回転子が高速で
回転するときに、永久磁石片が遠心力によって永久磁石
回転子の半径方向外側に引張られ、前記鉄心の連結部ｃ
´に大きな応力が発生する。また、鉄心の連結部ｃ´に
接する永久磁石片の角部が鋭角的な形状を有しているた
めに、連結部ｃ´に応力が集中する。このため、永久磁
石回転子の高速回転中に鉄心の連結部ｃ´が破断するこ
とがあった。これに対し、鉄心の連結部ｃ´の断面積を
増加させるために、永久磁石片の外側曲面を軌定する円
弧の半径ｒ´2 を小さくし、鉄心の外周リング部ａ´の
幅を大きくすることができるが、この場合永久磁石片の
磁力が減少し、磁石の利用効率が悪い。そこで本考案の
目的は、構造上充分に強度を有し、界磁用永久磁石の磁
力を効率よく利用できる低振動・低騒音の永久磁石回転
子を提供することにある。However, in the conventional permanent magnet rotor having the above structure, when the permanent magnet rotor rotates at high speed, the permanent magnet pieces are pulled radially outward of the permanent magnet rotor by centrifugal force. And the connecting portion c of the iron core
′ Generates a large stress. Further, since the corners of the permanent magnet pieces in contact with the connecting portion c 'of the iron core have an acute angle, stress concentrates on the connecting portion c'. For this reason, the connecting portion c 'of the iron core may break during the high-speed rotation of the permanent magnet rotor. In contrast, in order to increase the cross-sectional area of the connecting portion c'of the core, to reduce the arc of radius r'2 to軌定the outer curved surface of the permanent magnet pieces, increase the width of the outer ring portion a'of the core However, in this case, the magnetic force of the permanent magnet piece is reduced, and the utilization efficiency of the magnet is poor. Accordingly, an object of the present invention is to provide a low-vibration, low-noise permanent magnet rotor that has sufficient strength in structure and can efficiently use the magnetic force of a field permanent magnet.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に本考案の永久磁石回転子は、外周近傍に複数の磁石片
用開口を有する円形鋼板を積層して円柱状の鉄心を形成
し、複数の断面扇状の界磁用永久磁石片を挿着する永久
磁石回転子において、前記永久磁石片用開口と前記鉄心
の外周面との間に形成される外周リングの幅を外周リン
グ部の中心より両端を大きくすることを特徴とするもの
である。Means for Solving the Problems To achieve the above object, a permanent magnet rotor according to the present invention is formed by laminating circular steel plates having a plurality of magnet piece openings near the outer periphery to form a columnar iron core, In a permanent magnet rotor into which a plurality of field permanent magnet pieces having a sectoral cross section are inserted, the width of an outer ring formed between the opening for the permanent magnet piece and the outer peripheral surface of the iron core is set to the center of the outer ring portion. It is characterized in that both ends are made larger.
【０００６】[0006]
【作用】本考案の永久磁石回転子によれば、前記鉄心の
外周リング部は、永久磁石片の中心部において幅が小さ
く、両端部において幅が大きくなるので、永久磁石片の
外側曲面を覆う鉄心の外周リング部と、永久磁石片の間
に介在する鉄心の継手部とを連結する鉄心の連結部の面
積を大きくすることができる。また、磁石片用開口の角
部の湾曲をゆるやかにすることができるので、高速回転
中に鉄心の連結部に発生する応力が小さい。According to the permanent magnet rotor of the present invention, the outer peripheral ring portion of the iron core has a small width at the center of the permanent magnet piece and has a large width at both ends, so that it covers the outer curved surface of the permanent magnet piece. The area of the connecting portion of the iron core connecting the outer peripheral ring portion of the iron core and the joint portion of the iron core interposed between the permanent magnet pieces can be increased. In addition, since the curvature of the corner of the opening for the magnet piece can be made gentle, the stress generated at the connecting portion of the iron core during high-speed rotation is small.
【０００７】[0007]
【実施例】以下本考案の一実施例について添付の図面を
参照して説明する。図２は本考案による永久磁石回転子
の全体を一部分解して示している。永久磁石回転子１は
円柱状の鉄心２と、４つの断面扇状の界磁用永久磁石片
３とから構成されている。前記鉄心２は円形の鋼板４を
多数積層して形成されている。鋼板４の中心部には回転
軸を挿入するための回転軸用開口５が設けられ、周縁部
には永久磁石片３の断面形状と整合する磁石片用開口６
が設けられている。各鋼板４は、回転軸用開口５と磁石
片用開口６とが互いに一致するように一体に積層されて
いる。前記界磁用永久磁石片３のうち２つは、外側がＮ
極に、内側がＳ極に着磁され、他の２つは反対に、外側
がＳ極に、内側がＮ極に着磁されている。これら界磁用
永久磁石片３は、図中に示すように、外側が回転子の周
方向に交互にＮ極とＳ極となるように前記鉄心２の磁石
片用開口６に挿入されている。この結果、永久磁石回転
子１は、図中に示すように、周方向に交互にＮ極とＳ極
の磁性を示す磁極部を有している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 2 is a partially exploded view of the entire permanent magnet rotor according to the present invention. The permanent magnet rotor 1 is composed of a cylindrical iron core 2 and four field permanent magnet pieces 3 having a sectoral cross section. The iron core 2 is formed by laminating a large number of circular steel plates 4. A rotating shaft opening 5 for inserting a rotating shaft is provided at the center of the steel plate 4, and a magnet piece opening 6 matching the cross-sectional shape of the permanent magnet piece 3 is provided at the peripheral edge.
Is provided. Each steel plate 4 is integrally laminated so that the opening 5 for the rotating shaft and the opening 6 for the magnet piece coincide with each other. Two of the field permanent magnet pieces 3 have N outside.
The poles are magnetized to the south pole on the inside and the other two are oppositely magnetized to the south pole and the inside to the north pole. As shown in the figure, these field permanent magnet pieces 3 are inserted into the magnet piece openings 6 of the iron core 2 such that the outer sides alternately become N poles and S poles in the circumferential direction of the rotor. . As a result, as shown in the figure, the permanent magnet rotor 1 has magnetic pole portions that alternately show N-pole and S-pole magnetism in the circumferential direction.
【０００８】図３は本考案の永久磁石回転子を用いたブ
ラシレスモータの全体を示している。本考案の永久磁石
回転子１の回転軸用開口５には回転軸７が圧入され、永
久磁石回転子１と回転軸７は一体に回転するように構成
されている。回転軸７の両端部はボールベアリング８を
介してモータケース９によって回転自在に支承されてい
る。モータケース９の内周面には固定子１０が固定さ
れ、固定子１０の内周面は永久磁石回転子１の外周面と
僅かな距離を隔てて対向するように構成されている。固
定子１０の駆動コイルに、図示しない制御回路によって
制御された電流が流されることにより、固定子１０の内
部空間に回転する磁界が発生する。この固定子１０の回
転磁界と前記永久磁石回転子１の磁極部との相互作用に
より、永久磁石回転子１は高速で回転する。FIG. 3 shows the entire brushless motor using the permanent magnet rotor of the present invention. The rotating shaft 7 is press-fitted into the rotating shaft opening 5 of the permanent magnet rotor 1 of the present invention, and the permanent magnet rotor 1 and the rotating shaft 7 are configured to rotate integrally. Both ends of the rotating shaft 7 are rotatably supported by a motor case 9 via ball bearings 8. A stator 10 is fixed to the inner peripheral surface of the motor case 9, and the inner peripheral surface of the stator 10 is configured to face the outer peripheral surface of the permanent magnet rotor 1 at a small distance. When a current controlled by a control circuit (not shown) is applied to the drive coil of the stator 10, a rotating magnetic field is generated in the internal space of the stator 10. The interaction between the rotating magnetic field of the stator 10 and the magnetic pole portion of the permanent magnet rotor 1 causes the permanent magnet rotor 1 to rotate at high speed.
【０００９】図１は、本願考案の要部である永久磁石回
転子１の断面の一部を拡大して示している。永久磁石回
転子１の断面全体は、図中に示す回転子の中心線Ａ−Ａ
´に関して対称であって、中心線Ａ−Ａ´の下側の断面
は図示を省略している。図１において鉄心２の外周面
は、鉄心２の回転中心Ｏ1 を中心として半径ｒ1 の円に
よって軌定されている。一方、永久磁石片３の外側の曲
面は、前記中心Ｏ1 から半径方向外側に所定距離はなれ
た点Ｏ2 を中心として半径ｒ2 の円弧によって軌定され
ている。また、各永久磁石片３の内側の曲面は、中心Ｏ
2 を中心として半径ｒ3 の円弧によって軌定されてい
る。永久磁石片３は、図中に示すように、外側曲面が鉄
心２の外周面の内側に近接して組み込まれているので、
鉄心２は磁石片用開口部６と鉄心２の外周面との間に形
成され、永久磁石片３の外側曲面を覆ってこれを保持す
る外周リング部ａと、永久磁石片３の間に介在する継手
部ｂと、前記外周リング部ａと継手部ｂとを連結する連
結部ｃとを有している。永久磁石片３の外側曲面が回転
中心Ｏ1 から半径方向外側の点Ｏ2 を中心とする円弧に
よって軌定されているので、前記鉄心２の外周リング部
ａは、永久磁石片３の中心部において幅が狭く、永久磁
石片３の両端において幅が広い形状を有している。ま
た、同じ理由により、鉄心２の磁石片用開口６の角部の
湾曲をゆるやかなものにでき、連結部ｃの面積を大きく
することができる。FIG. 1 is an enlarged view of a part of a cross section of a permanent magnet rotor 1 which is a main part of the present invention. The entire cross section of the permanent magnet rotor 1 is the center line AA of the rotor shown in the figure.
′, And a cross section below the center line AA ′ is not shown. In FIG. 1, the outer peripheral surface of the iron core 2 is orbited by a circle having a radius r 1 around the rotation center O 1 of the iron core 2. On the other hand, the outer curved surface of the permanent magnet pieces 3, a predetermined distance radially outward from the center O 1 is軌定by an arc having a radius r 2 around the O 2 points accustomed. The curved surface inside each permanent magnet piece 3 has a center O
It is軌定by an arc having a radius r 3 about a 2. As shown in the figure, the permanent magnet piece 3 has the outer curved surface incorporated near the inner peripheral surface of the iron core 2,
The iron core 2 is formed between the magnet piece opening 6 and the outer peripheral surface of the iron core 2, and is interposed between the outer peripheral ring part a that covers and holds the outer curved surface of the permanent magnet piece 3 and the permanent magnet piece 3. And a connecting portion c for connecting the outer peripheral ring portion a and the joint portion b. Since the outer curved surface of the permanent magnet piece 3 is tracked by an arc centered on a point O 2 radially outward from the rotation center O 1 , the outer peripheral ring portion a of the iron core 2 is formed at the center of the permanent magnet piece 3. Has a shape with a small width and a wide width at both ends of the permanent magnet piece 3. Further, for the same reason, the curvature of the corner of the magnet piece opening 6 of the iron core 2 can be made gentle, and the area of the connecting portion c can be increased.
【００１０】次ぎに上記構造に基づいて本考案の永久磁
石回転子の作用・効果について説明する。図３において
説明したように、永久磁石回転子１はモータの固定子１
０等によって高速で回転駆動される。永久磁石回転子１
が高速で回転しているとき、各永久磁石片３は図１に示
した遠心力Ｆを受け、各永久磁石片３は永久磁石回転子
１の外側に向って飛散しようとする。この永久磁石片３
の遠心力Ｆによって、鉄心２の外周リング部ａは外側に
引っ張られ、前記鉄心２の連結部ｃに大きな引張り力が
発生する。しかし、本考案の永久磁石回転子１によれ
ば、鉄心２の外周リング部ａは中心において幅を狭く、
両端において幅を広くして連結部ｃに大きな面積を有し
ているので、連結部ｃに発生する応力が小さい。また、
磁石片用開口６の角部がゆるやかに湾曲しているので、
磁石片用開口６の角部への応力集中が少ない。このこと
により、鉄心２の連結部ｃが永久磁石片３の遠心力Ｆに
よって破断することがない。また、鉄心２の外周リング
部ａは永久磁石片３の中心部において幅が狭く、永久磁
石片３の両端において幅が広いので、永久磁石片３の磁
力強さを低下させることなく、遠心力Ｆに対する外周リ
ング部ａの強度を充分確保することができる。さらに永
久磁石片３の磁束が外周リング部ａの中心部に集中する
ので、固定子１０のＮ極とＳ極との切り換え時に発生す
る永久磁石回転子の脈動トルクが小さく、低振動・低騒
音のモータを得ることができる。Next, the operation and effect of the permanent magnet rotor of the present invention will be described based on the above structure. As described in FIG. 3, the permanent magnet rotor 1 is the stator 1 of the motor.
It is driven to rotate at high speed by 0 or the like. Permanent magnet rotor 1
Is rotating at high speed, each permanent magnet piece 3 receives the centrifugal force F shown in FIG. 1, and each permanent magnet piece 3 tends to fly toward the outside of the permanent magnet rotor 1. This permanent magnet piece 3
Due to the centrifugal force F, the outer peripheral ring portion a of the iron core 2 is pulled outward, and a large tensile force is generated at the connecting portion c of the iron core 2. However, according to the permanent magnet rotor 1 of the present invention, the outer peripheral ring portion a of the iron core 2 has a narrow width at the center,
Since the width is increased at both ends and the connection portion c has a large area, the stress generated in the connection portion c is small. Also,
Since the corners of the magnet piece opening 6 are gently curved,
Stress concentration on the corners of the magnet piece opening 6 is small. Thus, the connecting portion c of the iron core 2 is not broken by the centrifugal force F of the permanent magnet piece 3. Further, the outer peripheral ring portion a of the iron core 2 has a small width at the center of the permanent magnet piece 3 and a large width at both ends of the permanent magnet piece 3. The strength of the outer peripheral ring portion a with respect to F can be sufficiently ensured. Further, since the magnetic flux of the permanent magnet piece 3 is concentrated on the central portion of the outer peripheral ring portion a, the pulsating torque of the permanent magnet rotor generated when the stator 10 switches between the N pole and the S pole is small, resulting in low vibration and low noise. Motor can be obtained.
【００１１】[0011]
【考案の効果】本考案の永久磁石回転子によれば、鉄心
の外周リング部は、永久磁石片の中心部において幅を小
さく、両端部において幅を大きく形成しているので、鉄
心の連結部の面積を大きくするとともに、磁石片用開口
の角部の湾曲をゆるやかにすることができる。このこと
により、本考案の永久磁石回転子は、高速回転中に鉄心
の連結部に発生する応力が小さくなり、鉄心の連結部が
破断して界磁用永久磁石が飛散する事故を防止すること
ができる。According to the permanent magnet rotor of the present invention, the outer peripheral ring portion of the iron core has a small width at the center of the permanent magnet piece and a large width at both ends. And the curvature of the corners of the opening for the magnet piece can be made gentler. As a result, in the permanent magnet rotor of the present invention, the stress generated at the joint portion of the iron core during high-speed rotation is reduced, and the accident that the joint portion of the iron core is broken and the field permanent magnet is scattered is prevented. Can be.
【図１】本考案の永久磁石回転子の一部を拡大して示し
た断面図。FIG. 1 is an enlarged sectional view showing a part of a permanent magnet rotor according to the present invention.
【図２】本考案の永久磁石回転子の斜視図。FIG. 2 is a perspective view of the permanent magnet rotor of the present invention.
【図３】本考案の永久磁石回転子を用いたモータの側断
面図。FIG. 3 is a side sectional view of a motor using the permanent magnet rotor of the present invention.
【図４】従来の永久磁石回転子の斜視図。FIG. 4 is a perspective view of a conventional permanent magnet rotor.
【図５】従来の永久磁石回転子の一部を拡大して示した
断面図。FIG. 5 is an enlarged sectional view showing a part of a conventional permanent magnet rotor.
１ 永久磁石回転子 ２ 鉄心 ３ 界磁用永久磁石片 ４ 鋼板 ６ 磁石片用開口 ａ 外周リング部 Ｏ1 回転中心 Ｏ2 外側曲面の中心点DESCRIPTION OF SYMBOLS 1 Permanent magnet rotor 2 Iron core 3 Permanent magnet piece for field 4 Steel plate 6 Opening for magnet piece a Outer ring part O 1 Rotation center O 2 Center point of outer curved surface
Claims (1)
形鋼板を積層して円柱状の鉄心を形成し、複数の断面扇
状の界磁用永久磁石片を挿着する永久磁石回転子におい
て、前記永久磁石片用開口と前記鉄心の外周面との間に
形成される外周リングの幅を外周リング部の中心より両
端を大きくすることを特徴とする永久磁石回転子。1. A permanent magnet rotor in which a plurality of circular steel plates having a plurality of magnet piece openings in the vicinity of the outer periphery are laminated to form a columnar iron core, and a plurality of field permanent magnet pieces having a sector shape in section are inserted therein. A permanent magnet rotor characterized in that a width of an outer peripheral ring formed between the opening for the permanent magnet piece and an outer peripheral surface of the iron core is larger at both ends than a center of the outer peripheral ring portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5000591U JP2543165Y2 (en) | 1991-06-28 | 1991-06-28 | Permanent magnet rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5000591U JP2543165Y2 (en) | 1991-06-28 | 1991-06-28 | Permanent magnet rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH054741U JPH054741U (en) | 1993-01-22 |
| JP2543165Y2 true JP2543165Y2 (en) | 1997-08-06 |
Family
ID=12846888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5000591U Expired - Lifetime JP2543165Y2 (en) | 1991-06-28 | 1991-06-28 | Permanent magnet rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2543165Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112015001725B4 (en) * | 2014-04-08 | 2024-12-24 | Mitsubishi Electric Corporation | Rotating electrical machine with embedded permanent magnets |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3485878B2 (en) * | 1993-12-28 | 2004-01-13 | 三洋電機株式会社 | Rotor of motor for compressor |
| JP3485877B2 (en) * | 1993-12-28 | 2004-01-13 | 三洋電機株式会社 | Rotor of motor for compressor |
| JP3485909B2 (en) * | 1993-12-28 | 2004-01-13 | 三洋電機株式会社 | Hermetic compressor |
| JP3485910B2 (en) * | 1993-12-28 | 2004-01-13 | 三洋電機株式会社 | Hermetic compressor |
| JP3485879B2 (en) * | 1993-12-28 | 2004-01-13 | 三洋電機株式会社 | Rotor of motor for compressor |
| JP3485881B2 (en) * | 1993-12-28 | 2004-01-13 | 三洋電機株式会社 | Compressor |
| JP3485880B2 (en) * | 1993-12-28 | 2004-01-13 | 三洋電機株式会社 | Rotor of motor for compressor |
| JP2012228104A (en) * | 2011-04-21 | 2012-11-15 | Mitsubishi Electric Corp | Permanent magnet-embedded motor |
-
1991
- 1991-06-28 JP JP5000591U patent/JP2543165Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112015001725B4 (en) * | 2014-04-08 | 2024-12-24 | Mitsubishi Electric Corporation | Rotating electrical machine with embedded permanent magnets |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH054741U (en) | 1993-01-22 |
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