JP2795572B2 - Synchronous machine rotor and method of manufacturing the same - Google Patents
Synchronous machine rotor and method of manufacturing the sameInfo
- Publication number
- JP2795572B2 JP2795572B2 JP4007762A JP776292A JP2795572B2 JP 2795572 B2 JP2795572 B2 JP 2795572B2 JP 4007762 A JP4007762 A JP 4007762A JP 776292 A JP776292 A JP 776292A JP 2795572 B2 JP2795572 B2 JP 2795572B2
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- rotor core
- permanent magnet
- dovetail
- pair
- 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 - Fee Related
Links
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、同期機、殊に、同期電
動機のロータの構造に関し、回転軸に固定されてヨーク
を成すロータコアの実質的な円筒周面に、固定子の回転
磁界との相互作用により回転トルクを発生する永久磁石
を固定的に表面貼り付け式に配列、具備した構造を有す
るロータにおける各永久磁石片を突合面で衝合された１
対のマグネット板部材で形成し、ロータコア周面への装
着を容易化すると共にそれらのマグネット片の剥離を防
止できるようにした改良構造と、そのようなロータの製
造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synchronous machine, and more particularly to a structure of a rotor of a synchronous motor. The present invention relates to a rotating magnetic field of a stator on a substantially cylindrical peripheral surface of a rotor core fixed to a rotating shaft to form a yoke. The permanent magnets that generate rotational torque due to the interaction of the rotors are fixedly arranged on the surface, and each permanent magnet piece of the rotor having the structure provided is abutted on the abutting surface.
The present invention relates to an improved structure formed of a pair of magnet plate members so as to facilitate attachment to a peripheral surface of a rotor core and to prevent separation of the magnet pieces, and a method of manufacturing such a rotor.
【０００２】[0002]
【従来の技術】同期機のロータとしては、ヨークを成す
ロータコアと永久磁石とを円周方向に交互に挟持構造で
配置したラジアル形ロータと、円筒形のロータコアの外
周面に複数の永久磁石片を貼り付け式に固定した表面貼
り付け形ロータの２種が多く実用されている。このよう
な２種の同期機用ロータにおいて、後者の表面貼り付け
形ロータでは一般に複数の永久磁石片を接着剤を用いて
実質的に円筒形をしたロータコアの表面に接着、貼り付
けする固定構造をとっている。この場合には、ロータの
回転に伴う遠心力と固定子の磁界との磁気的相互作用に
基づく磁気吸引力との両力を受けた状態で長時間回転す
る場合にも永久磁石片がロータコアの表面から剥離しな
いためには、接着剤の接着強度が各永久磁石片に作用す
る上記の遠心力と磁気吸引力との合力に充分に勝る強度
であることが要求される。このために、永久磁石片の固
定を接着剤のみに頼ることを避け、ロータコアの外周表
面に凹所を形成し、この凹所内に永久磁石片の下底面側
の一部を沈めることにより、凹所の側壁で永久磁石片の
側面を保持するようにしたものもある。2. Description of the Related Art As a rotor of a synchronous machine, there are a radial type rotor in which a rotor core and a permanent magnet forming a yoke are alternately arranged in a circumferential direction, and a plurality of permanent magnet pieces on an outer peripheral surface of a cylindrical rotor core. There are many types of surface-attached rotors in which the two are fixed in a sticking manner. In the two types of synchronous machine rotors, the latter is generally a fixed structure in which a plurality of permanent magnet pieces are adhered to and adhered to the surface of a substantially cylindrical rotor core using an adhesive. Has taken. In this case, even when the rotor core is rotated for a long time in a state where it receives both the centrifugal force due to the rotation of the rotor and the magnetic attraction force based on the magnetic interaction between the stator and the magnetic field of the stator, the permanent magnet pieces of the rotor core can be used. In order not to peel off from the surface, it is required that the adhesive strength of the adhesive sufficiently exceed the combined force of the above-mentioned centrifugal force and magnetic attraction force acting on each permanent magnet piece. For this reason, avoiding relying only on the adhesive for fixing the permanent magnet piece, a recess is formed in the outer peripheral surface of the rotor core, and a part of the lower bottom surface side of the permanent magnet piece is submerged in the recess, thereby forming the recess. In some cases, a side wall of the permanent magnet piece is held by a side wall at a place.
【０００３】[0003]
【発明が解決しようとする課題】図９（ａ）、（ｂ）
は、上述した従来の同期機の表面貼り付け形ロータにお
ける標準的な構造、つまり、永久磁石片の貼り付けを接
着剤と、ロータコアの外周面に形成した浅い凹所内に各
永久磁石片の下底部分を沈めることにより、単に永久磁
石片を貼り付けた構造よりは、剥離防止機能が改善した
構造のロータを示したものである。即ち、このロータ１
１はロータ軸１２上に、２つの端板１５の間に取付け、
固定された円筒形ロータコア１３の外周面に軸方向に延
設され、かつ、回転軸１２の中心に向けて鳩尾形に広が
った形状の複数個の凹所１６が周方向に等間隔で形成さ
れ、他方、永久磁石片１７は、同凹所１６の形状と相補
形に底面側が上面側より鳩尾形に広がるテーパ側面１７
ａ、１７ａを成した両側面を有する湾曲板形状片に形成
されてロータコア１３の凹所１６に相補的に嵌合して機
械的なロック構造を形成し、以てロータコア１３から永
久磁石片１７が離脱、ないし剥離しない構造を得てい
る。この構造では、永久磁石片１７をロータコア１３の
凹所１６内に嵌合、組立する組立工程では、必然的に、
各永久磁石片１７をロータコア１３の軸方向端面から凹
所１６に差込み式に挿入して軸方向における所定の位置
に位置決めする方法がとられている。従って、例えば、
ロータ１１を軸方向に複数段に多段化し、各段の間では
永久磁石片１７を、周知のトルクリップル低減のために
ロータ周方向に位相をずらして配列した構造を採ると、
中央部の段では、上述した軸方向にロータコア１３の凹
所１６内に差込み式に挿入する組立方法では、組立が不
可能になる。FIG. 9 (a) and FIG. 9 (b)
Is a standard structure of the above-described conventional surface-attached rotor of the synchronous machine, that is, the permanent magnet pieces are attached to each other with an adhesive and a shallow recess formed on the outer peripheral surface of the rotor core. This shows a rotor having a structure in which the peeling prevention function is improved as compared with a structure in which permanent magnet pieces are simply attached by lowering the bottom portion. That is, this rotor 1
1 is mounted on the rotor shaft 12 between the two end plates 15;
A plurality of recesses 16 extending in the axial direction on the outer peripheral surface of the fixed cylindrical rotor core 13 and extending in a dovetail shape toward the center of the rotating shaft 12 are formed at equal intervals in the circumferential direction. On the other hand, the permanent magnet piece 17 has a tapered side face 17 that has a bottom surface side that spreads in a dovetail shape from the top surface side in a complementary shape to the shape of the recess 16.
a and 17a are formed in a curved plate-shaped piece having both side faces, and are complementarily fitted into the recesses 16 of the rotor core 13 to form a mechanical lock structure. Has a structure that does not separate or peel off. In this structure, in the assembly process of fitting and assembling the permanent magnet pieces 17 into the recesses 16 of the rotor core 13,
A method is adopted in which each permanent magnet piece 17 is inserted into the recess 16 from the axial end face of the rotor core 13 in a plug-in manner and positioned at a predetermined position in the axial direction. So, for example,
When the rotor 11 is multi-staged in a plurality of stages in the axial direction, and between the stages, permanent magnet pieces 17 are arranged with phases shifted in the circumferential direction of the rotor to reduce a known torque ripple.
At the center stage, the assembling method in which the above-described insertion method is inserted into the recess 16 of the rotor core 13 in the axial direction does not allow assembling.
【０００４】従って、必然的に図１０（ａ）、（ｂ）に
示すように、ロータ１１ａを軸方向に複数段に多段化
（図示例では３段構造）し、各段の間では永久磁石片１
７を、トルクリップル低減のためにロータ円周方向に位
相をずらして配列したロータ構造とする場合には、各永
久磁石片１７をロータコア１３の単純な円筒周面１３ａ
に接着剤で貼り付ける構造が採られていた。勿論、この
とき、接着剤による接着強度は各永久磁石片１７に作用
する回転に伴う遠心力と固定子との間で作用する磁気吸
引力との合力を充分に上回るように、適正な接着剤の選
択、ロータコア表面の粗面化等の種々の設計上の工夫が
成されているが、信頼性の点で、完全とは言い難い。Therefore, as shown in FIGS. 10 (a) and 10 (b), the rotor 11a is inevitably multistaged in a plurality of stages in the axial direction (in the illustrated example, a three-stage structure), and a permanent magnet is provided between each stage. Piece 1
When the rotor 7 has a rotor structure in which the phases are shifted in the circumferential direction of the rotor to reduce the torque ripple, each permanent magnet piece 17 is formed by a simple cylindrical peripheral surface 13 a of the rotor core 13.
Had a structure to be attached with an adhesive. Of course, at this time, an appropriate adhesive is used so that the adhesive strength of the adhesive sufficiently exceeds the combined force of the centrifugal force due to rotation acting on each permanent magnet piece 17 and the magnetic attraction force acting between the stator. Although various design devise have been made, such as selection of the rotor core and roughening of the rotor core surface, it is hard to say that it is perfect in terms of reliability.
【０００５】依って、本発明の主目的は、上述した従来
の同期機のロータ、特に、表面貼り付け式のロータにお
ける諸問題点を解決することにある。本発明の他の目的
は、永久磁石片をロータコアの実質的に外周面に固定す
る表面貼り付け形ロータにおいて、組立工程が従来より
複雑化することなく、つまり工数増加を生ずることなく
組立可能であると共に、回転に伴う遠心力および固定子
磁界との磁気的相互作用時の磁気吸引力によってロータ
コアの表面から剥離ないし離脱を生ずることがない機械
的固定強度を付与可能な構造を有した同期機の表面貼り
付け形ロータを提供せんとすることにある。Accordingly, a main object of the present invention is to solve the above-described problems in the rotor of the conventional synchronous machine, particularly, the rotor of the surface-attached type. Another object of the present invention is to provide a surface-attached rotor in which a permanent magnet piece is fixed to a substantially outer peripheral surface of a rotor core, and can be assembled without complicating the assembly process, that is, without increasing the number of steps. A synchronous machine having a structure capable of imparting mechanical fixing strength that does not cause separation or detachment from the surface of the rotor core due to centrifugal force due to rotation and magnetic attraction force during magnetic interaction with a stator magnetic field To provide a surface-attached type rotor.
【０００６】[0006]
【課題を解決するための手段】本発明は、上述した発明
目的に鑑み、同期機の表面貼り付け式永久磁石片を備え
たロータを形成するに当たり、ロータコアの実質的に円
筒形の表面に凹形の永久磁石取付座を形成し、かつ、こ
の凹形の永久磁石取付座に嵌入、固定する各永久磁石片
を、１対のマグネット板部材を所定の突合面で分離可能
に衝合して構成し、同１対のマグネット板部材の第１の
部材を上記永久磁石取付座を形成する凸壁の側面に設け
られたテーパ面に先ず嵌入、固定し、次いで第２のマグ
ネット板部材を第１のマグネット部材の突合面に滑り込
ませることにより、簡単に組立可能とし、かつ、ロータ
コアの上記永久磁石取付座との機械的なロック構造を形
成して外部作用力による剥離、離脱に充分、抗すること
が可能にしたロータを構成したものである。この構造に
よれば、ロータをトルクリップル低減効果を求めて多段
化した場合にも、ロータコアのラジアル方向の外周側か
ら第１のマグネット板部材を取付け、次いで、その突合
面へ第２のマグネット板部材の突合面を滑り込ませて衝
合させることにより、同第２のマグネット板部材もロー
タコアの凹所に機械的にロックした構造で取付けること
が可能であり、組立の容易性と剥離、離脱防止構造の両
条件を充足させることができるのである。勿論、各永久
磁石片を形成する１対のマグネット板部材とロータコア
の表面とは接着剤で接着、固定する。SUMMARY OF THE INVENTION In view of the above-mentioned object, the present invention is directed to forming a rotor having a surface-attached permanent magnet piece of a synchronous machine, wherein the rotor core has a substantially cylindrical surface. Forming a permanent magnet mounting seat of a shape, and abutting each permanent magnet piece to be fitted and fixed to the concave permanent magnet mounting seat so that a pair of magnet plate members can be separated at a predetermined abutting surface. The first member of the pair of magnet plate members is first fitted and fixed to a tapered surface provided on the side surface of the convex wall forming the permanent magnet mounting seat, and then the second magnet plate member is connected to the second magnet plate member. By slipping into the abutting surface of the first magnet member, it is possible to easily assemble, and to form a mechanical lock structure of the rotor core with the above-mentioned permanent magnet mounting seat to sufficiently resist peeling and detachment by an external force. Low made possible One in which you configure. According to this structure, even when the rotor is multi-staged in order to reduce the torque ripple, the first magnet plate member is attached from the radially outer side of the rotor core, and then the second magnet plate is attached to the abutting surface. By sliding the butting surfaces of the members into contact with each other, the second magnet plate member can also be attached to the recess of the rotor core with a mechanically locked structure, thereby facilitating assembly and preventing peeling and detachment. Both conditions of the structure can be satisfied. Of course, a pair of magnet plate members forming each permanent magnet piece and the surface of the rotor core are bonded and fixed with an adhesive.
【０００７】即ち、本発明に依れば、固定子の内周に回
転可能に配置され、実質的に円筒形のロータコアの表面
に貼り付け固定された複数の永久磁石片を有した同期機
のロータにおいて、前記円筒形ロータコアは、その外周
面に周方向に所定の間隔で配設されると共に略ロータの
回転軸方向に長さを有し、かつ、鳩尾断面形状を有した
複数の凸壁を具備することにより、該複数凸壁の相互に
隣り合った凸壁間に形成された複数の略蟻溝状の凹所を
前記永久磁石片の凹形取付座として具備し、また、前記
ロータの磁極を形成する前記各永久磁石片は、該ロータ
の回転軸と同方向に延長する突合面で２分可能な１対の
湾曲マグネット板からなると共に前記ロータコアの蟻溝
状の凹形取付座に密着、係合により機械的ロック構造を
形成可能な末広なテーパ面を両側面に有し、かつ、該１
対のマグネット板の前記突合面は、前記ロータコアの外
周面に対して垂直なラジアル面から所定の傾き角を有し
た傾斜突合面を成した構成を備えた同期機のロータが提
供される。That is, according to the present invention, there is provided a synchronous machine having a plurality of permanent magnet pieces rotatably disposed on the inner periphery of a stator and affixed and fixed to the surface of a substantially cylindrical rotor core. In the rotor, the cylindrical rotor core is disposed on the outer peripheral surface thereof at a predetermined interval in the circumferential direction, has a length substantially in the rotation axis direction of the rotor, and has a plurality of convex walls having a dovetail cross section. A plurality of substantially dovetail-shaped recesses formed between adjacent ones of the plurality of convex walls as concave mounting seats for the permanent magnet pieces. Each of the permanent magnet pieces forming the magnetic poles is composed of a pair of curved magnet plates that can be divided into two by a butting surface extending in the same direction as the rotation axis of the rotor, and a dovetail-shaped concave mounting seat of the rotor core. A wide divergence that can form a mechanical lock structure by close contact and engagement It has over tapered surface on both sides, and the 1
A synchronous machine rotor having a configuration in which the abutting surfaces of the pair of magnet plates form an inclined abutting surface having a predetermined inclination angle from a radial surface perpendicular to the outer peripheral surface of the rotor core is provided.
【０００８】また、本発明によれば、実質的に円筒形の
ロータコアの外周面に複数の永久磁石片を固定した表面
貼り付け形の同期機用ロータの製造方法において、前記
円筒形ロータコアは、その外周面に周方向に所定の間隔
で配設されると共に略ロータの回転軸方向に長さを有
し、かつ、鳩尾断面形状を有した複数の凸壁を設けるこ
とにより、該複数凸壁の相互に隣り合った凸壁間に、複
数の略蟻溝状の凹所を前記永久磁石片の凹形取付座とし
て形成し、また、前記ロータの磁極を形成する前記各永
久磁石片は、該ロータの回転軸と同方向に延長する突合
面で２分可能な１対の湾曲マグネット板からなると共に
前記ロータコアの蟻溝状の凹形取付座に密着、係合によ
り機械的ロック構造を形成可能な末広なテーパ面を両側
面に有し、かつ、該１対のマグネット板の前記突合面
は、前記ロータコアの外周面に対して垂直なラジアル面
から所定の傾き角を有した傾斜突合面を成すように形成
し、前記各永久磁石片を、前記ロータコアの前記各凹形
取付座に取付けるに当たって、前記１対のマグネット板
における第１のマグネット板を、前記ロータコアの蟻溝
状の凹形取付座における一端に向けて周方向に摺動、挿
入して密着的にテーパ係合させ、次いで、前記１対のマ
グネット板における第２のマグネット板を、前記ロータ
コアの凹形取付座の一端に密着的にテーパ係合させた前
記第１のマグネット板と前記突合面で衝合するように軸
方向に摺動、係合させ、このとき、同時に該第２のマグ
ネット板の側面を、前記ロータコアの蟻溝状凹形取付座
の他の一端側に密着的にテーパ係合させ、前記永久磁石
片を前記ロータコアに対して剥離、離脱を防止されるよ
うに該ロータコアの外周面に固定されるようにした同期
機のロータ製造方法が提供される。上述において、各永
久磁石片を形成する１対のマグネット板の突合面に形成
した所定の傾き角とは、１対のマグネット板における第
１のマグネット板を先ずロータコアの蟻溝状の凹形取付
座における一端に向けて周方向に摺動、挿入して密着的
にテーパ係合させてから、同１対のマグネット板におけ
る第２のマグネット板を同じくロータコアの凹形取付座
の一端に密着的にテーパ係合させ、第１のマ グネット板
の突合面に第２のマグネット板の突合面を滑り込ませて
突合面同志を衝合させる際に、斜め方向から容易に滑り
込ませることが可能なように、ロータコアの外周面に対
して垂直なラジアル面から適正量傾むけた角度に設定す
れば良いことを意味するものである。以下、本発明を添
付図面に示す実施例に基づいて更に、詳細に説明する。According to the present invention, in a method of manufacturing a surface-attached synchronous machine rotor in which a plurality of permanent magnet pieces are fixed to the outer peripheral surface of a substantially cylindrical rotor core, the cylindrical rotor core comprises: The plurality of convex walls are provided on the outer peripheral surface at predetermined intervals in the circumferential direction and have a length substantially in the rotation axis direction of the rotor, and a plurality of convex walls having a dovetail cross-sectional shape. A plurality of substantially dovetail-shaped recesses are formed as concave mounting seats for the permanent magnet pieces between the mutually adjacent convex walls, and each of the permanent magnet pieces forming the magnetic poles of the rotor is: A mechanical lock structure is formed by a pair of curved magnet plates that can be divided into two by an abutting surface extending in the same direction as the rotation axis of the rotor, and is closely attached to and engaged with the dovetail-shaped concave mounting seat of the rotor core. It has a possible divergent tapered surface on both sides, and The abutting surfaces of the pair of magnet plates are formed so as to form an inclined abutting surface having a predetermined inclination angle from a radial surface perpendicular to the outer peripheral surface of the rotor core. At the time of mounting on each of the concave mounting seats, the first magnet plate of the pair of magnet plates is circumferentially slid toward and inserted into one end of the dovetail-shaped concave mounting seat of the rotor core. Tapered engagement, and then the second magnet plate of the pair of magnet plates is brought into contact with the first magnet plate in tapered engagement with one end of a concave mounting seat of the rotor core. The second magnet plate is slid and engaged in the axial direction so as to abut against each other at this time. Taper engagement The peeling permanent magnet pieces to the rotor core, rotor manufacturing method of a synchronous machine so as to be fixed to the outer peripheral surface of the rotor core are provided so as to prevent separation. In the above,
Formed on the abutting surface of a pair of magnet plates forming a permanent magnet piece
The predetermined tilt angle is defined as the first tilt angle of the pair of magnet plates.
First, attach the magnet plate to the dovetail concave shape of the rotor core.
Sliding in the circumferential direction toward one end of the seat and inserting it for close contact
After the taper engagement with the
The second magnet plate is also mounted on the concave mounting seat of the rotor core.
One end contact manner engaged tapered engagement in the first Ma Gunetto plate
Slide the butting surface of the second magnet plate into the butting surface of
Easily slides diagonally when abutting surfaces
So that it can be inserted into the outer surface of the rotor core.
To the right angle from the vertical radial surface.
It means that we should do it. Hereinafter, the present invention will be described in more detail based on embodiments shown in the accompanying drawings.
【０００９】[0009]
【実施例】図１は本発明による同期機のロータの第１の
実施例を示す斜視図、図２は、同第１実施例のロータに
用いる永久磁石片を構成する１対のマグネット板を分離
状態で示した斜視図、図３の（ａ）は同第１実施例のロ
ータの正面図、（ｂ）は（ａ）の３ー３線による端面
図、図４は、本発明の第２の実施例による同期機用ロー
タの正面図、図５は本発明による同期機用ロータの第３
実施例の正面図、図６は、同第３実施例のロータに用い
る永久磁石片の斜視図、図７、本発明による同期機のロ
ータの第４実施例を示す斜視図、図８は同第４実施例の
ロータの正面図である。FIG. 1 is a perspective view showing a first embodiment of a rotor of a synchronous machine according to the present invention. FIG. 2 is a perspective view showing a pair of magnet plates constituting a permanent magnet piece used in the rotor of the first embodiment. FIG. 3 (a) is a front view of the rotor of the first embodiment, FIG. 3 (b) is an end view taken along line 3-3 of FIG. 3 (a), and FIG. FIG. 5 is a front view of a synchronous machine rotor according to a second embodiment, and FIG.
FIG. 6 is a perspective view showing a permanent magnet piece used in the rotor of the third embodiment, FIG. 7 is a perspective view showing a fourth embodiment of the rotor of the synchronous machine according to the present invention, and FIG. It is a front view of the rotor of a 4th example.
【００１０】図１〜図３を参照すると、本第１実施例に
係る同期機のロータ２０は、固定子１０の内周面の内部
に回転子として設けられ、ロータ軸２２と、このロータ
軸２２上に端板２１によって軸方向を保持されて楔着、
固定等により取付けれた円筒形ロータコア２３とを有し
ている。同ロータコア２３の周面には、図１に明示のよ
うに、周方向に等間隔で配設された軸方向に延びる凸壁
２４が複数、配設されている。この複数の凸壁２４は各
々が、鳩尾状断面を有するように形成されることによっ
て、各両側面はテーパ面２４ａ、２４ａを成し、従っ
て、隣合った凸壁２４、２４の間には、周方向に広がっ
た略蟻溝形状の永久磁石取付座２５が形成されている。Referring to FIGS. 1 to 3, the rotor 20 of the synchronous machine according to the first embodiment is provided as a rotor inside the inner peripheral surface of the stator 10, and includes a rotor shaft 22 and this rotor shaft. 22, wedge-mounted while being held in the axial direction by the end plate 21;
And a cylindrical rotor core 23 attached by fixing or the like. As shown in FIG. 1, a plurality of axially extending convex walls 24 arranged at equal intervals in the circumferential direction are arranged on the peripheral surface of the rotor core 23. Each of the plurality of convex walls 24 is formed so as to have a dovetail-shaped cross-section, so that each side surface forms a tapered surface 24a, 24a. A substantially dovetail-shaped permanent magnet mounting seat 25 extending in the circumferential direction is formed.
【００１１】ロータコア２３の上記各永久磁石取付座２
５には、複数（本実施例では図３の（ａ）に示すように
３つ）の永久磁石片２７が取付けられてロータ磁極を形
成する構造を有している。ここで、本実施例に係るロー
タ２０の永久磁石片２７は、図２に示すように、１対の
分離したマグネット板２８、２９から成り、両マグネッ
ト板２８、２９は、ロータコア２３の永久磁石座２５に
取付けられたとき、夫々の突合面２８ａ、２９ａが衝合
されて一体の永久磁石片２７となる形状を有し、ロータ
コア２３の外周面に対応した湾曲形状を有するマグネッ
ト板材から形成されている。上記の突合面２８ａ、２９
ａはロータ軸２２の中心線と一致した方向に延びる面
で、かつ、ロータコア２３の永久磁石取付座２５に垂直
なラジアル面から所定角度だけ傾斜した対向面を成して
いる。Each of the permanent magnet mounting seats 2 of the rotor core 23
5 has a structure in which a plurality (three in this embodiment, as shown in FIG. 3A) of permanent magnet pieces 27 are attached to form a rotor magnetic pole. Here, the permanent magnet piece 27 of the rotor 20 according to the present embodiment is composed of a pair of separated magnet plates 28 and 29, as shown in FIG. When attached to the seat 25, the respective abutting surfaces 28 a and 29 a have a shape in which they abut to form an integral permanent magnet piece 27, and are formed from a magnet plate material having a curved shape corresponding to the outer peripheral surface of the rotor core 23. ing. The butting surfaces 28a and 29 described above
“a” is a surface extending in a direction coinciding with the center line of the rotor shaft 22, and forms an opposing surface inclined by a predetermined angle from a radial surface perpendicular to the permanent magnet mounting seat 25 of the rotor core 23.
【００１２】更に、この永久磁石片２７は、軸方向に両
端２７ｂ、２７ｃを有すると共に両側面２７ａ、２７ａ
は、上述したロータコア２３の凸壁２４の両側のテーパ
面２４ａ、２４ａと相補な上面側から下面側へ末広がり
なテーパ面として形成されている。上述した１対のマグ
ネット板２８、２９から成る永久磁石片２７を、ロータ
コア２３に取付ける場合の取付、固定方法を以下に説明
する。Further, the permanent magnet piece 27 has both ends 27b, 27c in the axial direction and both side faces 27a, 27a.
Are formed as tapered surfaces diverging from the upper surface side to the lower surface side complementary to the tapered surfaces 24a on both sides of the convex wall 24 of the rotor core 23 described above. A method of attaching and fixing the permanent magnet piece 27 composed of the pair of magnet plates 28 and 29 to the rotor core 23 will be described below.
【００１３】先ず、各永久磁石片２７を形成する１対の
マグネット板２８、２９におけるマグネット板２８を図
１に示すように、ロータコア２３の所定の永久磁石取付
座２５の周方向における略中央領域に向けてロータコア
２３のラジアル方向の外側から落とし込むように着座さ
せる。次いで、同取付座２５の座面上を摺動させ、凸壁
２４の一方のテーパ側面２４ａ内に滑り込ませる。これ
によってマグネット板２８の片側のテーパ側面２７ａが
相補的に凸壁２４のテーパ面２４ａと密着、係合する。First, as shown in FIG. 1, the magnet plate 28 of the pair of magnet plates 28, 29 forming the respective permanent magnet pieces 27 is substantially centrally located in the circumferential direction of a predetermined permanent magnet mounting seat 25 of the rotor core 23. The rotor core 23 is seated so as to be dropped from the outside in the radial direction. Next, the user slides on the seat surface of the mounting seat 25 and slides into one tapered side surface 24 a of the convex wall 24. As a result, the tapered side surface 27a on one side of the magnet plate 28 comes into close contact with and engages with the tapered surface 24a of the convex wall 24 complementarily.
【００１４】次に、図１に同じく図示されているよう
に、他のマグネット板２９を、上記マグネット板２８の
突合面２８ａの横に滑り込ませるように取り付ける。こ
のときに、同マグネット板２９の突合面２９ａは、相手
の突合面２８ａと衝合し、また突合面２９ａと反対側の
テーパ側面２７ａはロータコア２３の凸壁２４のテーパ
側面２４ａに滑り込んで、密着、係合する。かくして、
互いに突合面２８ａ、２９ａで衝合した１対のマグネッ
ト板２８、２９は、ロータコア２３の永久磁石取付座２
５の所定の位置に固定され、しかも、凸壁２４のテーパ
面２４ａ、２４ａに同永久磁石片２７の両側のテーパ面
２７ａ、２７ａが密着、係合して機械的なロック構造を
形成すると共に突合面２８ａ、２９ａの衝合域でも両面
２８ａ、２９ａが対向した傾斜面において密着してい
る。かくして上記の機械的なロック構造により、ロータ
回転時に作用する遠心力と固定子１０との間で作用する
磁気的相互作用による吸引力との合力が、各永久磁石片
２７に対してロータコア２３のラジアル方向に作用して
も、その作用力で剥離、離脱を起こす危惧は機械的に阻
止されるのである。Next, as shown in FIG. 1, another magnet plate 29 is attached so as to slide beside the butting surface 28a of the magnet plate 28. At this time, the butting surface 29a of the magnet plate 29 abuts with the mating butting surface 28a, and the tapered side surface 27a opposite to the butting surface 29a slides into the tapered side surface 24a of the convex wall 24 of the rotor core 23. Contact and engage. Thus,
The pair of magnet plates 28, 29 abutting on the butting surfaces 28 a, 29 a are attached to the permanent magnet mounting seat 2 of the rotor core 23.
5, and the tapered surfaces 24a, 27a on both sides of the permanent magnet piece 27 closely contact and engage with the tapered surfaces 24a, 24a of the convex wall 24 to form a mechanical lock structure. Even in the abutting area of the abutting surfaces 28a and 29a, both surfaces 28a and 29a are in close contact with each other on the opposed inclined surfaces .
You. Thus, due to the mechanical locking structure described above, the resultant force of the centrifugal force acting when the rotor rotates and the attractive force due to the magnetic interaction acting between the stator 10 is applied to each permanent magnet piece 27 by the rotor core 23. Even if it acts in the radial direction, the fear of peeling or detaching due to its acting force is mechanically prevented.
【００１５】勿論、各永久磁石片２７を形成する１対の
マグネット板２８、２９の下面、つまり、ロータコア２
３の外周面に着座する面、及び同着座面には接着剤が塗
布されるから、接着による永久磁石の固定も成される。
図３の（ａ）、（ｂ）は共に上述のようにしてロータコ
ア２３に多数の永久磁石片２７を強固に取付けて形成さ
れた同期機のロータ２０の正面形状と軸方向の一端から
見た端面とを示している。Of course, the lower surfaces of the pair of magnet plates 28 and 29 forming each permanent magnet piece 27, that is, the rotor core 2
Since an adhesive is applied to the surface that is seated on the outer peripheral surface of 3 and the seating surface, the permanent magnet is fixed by bonding.
FIGS. 3A and 3B both show the rotor 20 of the synchronous machine formed by firmly attaching a large number of permanent magnet pieces 27 to the rotor core 23 as described above and viewed from one end in the axial direction and the rotor 20. And an end face.
【００１６】この第１の実施例から明らかなように、本
発明によれば、各永久磁石片２７を２つのマグネット板
２８、２９に分離し、これらのマグネット板２８、２９
を順次にロータコア２３の永久磁石取付座２５に取り付
けるので、取付時にロータコア２３の軸端側から各永久
磁石片を順次に滑り込ませる従来式の組立方法と異な
り、各永久磁石片２７を、その取付位置の直近で簡単に
組込みでき、しかも、機械的なロック構造も得られる点
で極めて有利なロータ製造方法が得られるのである。As is apparent from the first embodiment, according to the present invention, each permanent magnet piece 27 is separated into two magnet plates 28 and 29, and these magnet plates 28 and 29 are separated.
Are sequentially attached to the permanent magnet mounting seat 25 of the rotor core 23, so that unlike the conventional assembly method in which each permanent magnet piece is sequentially slid from the shaft end side of the rotor core 23 at the time of attachment, each permanent magnet piece 27 is attached to the same. The rotor manufacturing method is very advantageous in that it can be easily assembled in the immediate vicinity of the position and a mechanical lock structure can be obtained.
【００１７】上述したように、各永久磁石片２７を、ロ
ータコア２３の永久磁石取付座２５における所定の取付
位置の直近で組立処理することが可能な特徴は、特に、
同期機のロータを軸方向に多段に形成し、各段相互間で
周方向に所定のずれ角度を設け、以てトルクリップルの
低減を図る構造としたとき、より一層、有利であること
が確認できる。つまり、図４に示すように、ロータ２０
ａが軸方向に３段構造に形成され、各段毎に一定の周方
向のずれ角度θ１を設けたとき、各永久磁石片２７は、
１対のマグネット板２８、２９を順次にロータコア２３
の永久磁石取付座２５に組み込むようにしたから、たと
えロータコア２３における永久磁石取付座２５を形成す
る各段の取付座２５ａ、２５ｂにおける中央段の永久磁
石取付座２５ｂに永久磁石片２７を取付け、固定すると
きでも、ロータコア２３の軸端から滑り込ませる方法で
なく、直接、取付位置で１対のマグネット板２８、２９
に組み込むことが可能となる。つまり、ずれ角度θ１を
設けることにより、従来は図１０で既述したように、組
立が不可能になったが、本発明によれば、かかる不利を
完全に回避することができるのである。As described above, the feature that each permanent magnet piece 27 can be assembled near the predetermined mounting position on the permanent magnet mounting seat 25 of the rotor core 23 is, in particular,
It has been confirmed that it is even more advantageous when the rotor of the synchronous machine is formed in multiple stages in the axial direction and a predetermined offset angle is provided in the circumferential direction between each stage to reduce the torque ripple. it can. That is, as shown in FIG.
a is formed in a three-stage structure in the axial direction, and when a constant circumferential deviation angle θ1 is provided for each stage, each permanent magnet piece 27
The pair of magnet plates 28 and 29 are sequentially placed on the rotor core 23.
, The permanent magnet piece 27 is attached to the center permanent magnet mounting seat 25b of the mounting seats 25a, 25b of the respective stages forming the permanent magnet mounting seat 25 of the rotor core 23, Even when fixing, a pair of magnet plates 28, 29 is directly attached at the mounting position, not by a method of sliding from the shaft end of the rotor core 23.
It becomes possible to incorporate into. That is, as described above with reference to FIG. 10, assembling was conventionally impossible by providing the deviation angle θ1, but according to the present invention, such disadvantage can be completely avoided.
【００１８】なお、ロータコア２３の各段の永久磁石取
付座２５ａ〜２５ｃは、同ロータコアの周面に配設され
る凸壁を軸方向に３つの部分直線状の凸壁２４ａ〜２４
ｃによって形成することにより構成したものである。図
５は、本発明の第３の実施例を示したものである。本実
施例による同期機のロータ２０ｂは、そのロータコア２
３が、ロータ軸２２の中心線に対して一定のスキュー角
度を有するように全般的には軸方向に延長する凸壁３４
を外周面に周方向に等間隔で有した構造を備え、従っ
て、ロータコア２３の外周面に形成される永久磁石取付
座３５もスキュー角度αを有している。なお、各凸壁３
４は、その両側面がテーパ面に形成され、故に、互いに
隣合わせた凸壁３間に形成された永久磁石取付座３５が
略蟻溝状の凹形座として形成されていることは第１、第
２の実施例と同様である。The permanent magnet mounting seats 25a to 25c at each stage of the rotor core 23 are formed by three convex partial walls 24a to 24 formed in the axial direction.
It is constituted by forming with c. FIG. 5 shows a third embodiment of the present invention. The rotor 20b of the synchronous machine according to the present embodiment has a rotor core 2
3 is a convex wall 34 extending generally axially so as to have a constant skew angle with respect to the center line of the rotor shaft 22.
Are provided on the outer peripheral surface at equal intervals in the circumferential direction. Therefore, the permanent magnet mounting seat 35 formed on the outer peripheral surface of the rotor core 23 also has the skew angle α. In addition, each convex wall 3
4 is that the permanent magnet mounting seat 35 formed between the convex walls 3 adjacent to each other is formed as a substantially dovetail-shaped concave seat. This is the same as the second embodiment.
【００１９】さて、図６に示すように、上記ロータコア
２３の外周面に装着される複数の永久磁石片３７は、既
述の第１、第２の実施例と同様に、１対のマグネット板
３８、３９から成る点では同じであるが、両マグネット
板３８、３９から成る各永久磁石片３７が、上述したス
キュー角度αを有した永久磁石取付座３５にマグネット
板３８、次いでマグネット板３９の順序で装着されるた
め、その両側面３７ａ、３７ａは、ロータコア２３の凸
壁のテーパ側面と相補的な末広がり状のテーパ側面とし
て形成されると同時にスキュー角度αに対応した平面図
上でロータ軸方向に斜めに延びた側面として形成されて
いる点で、第１、第２の実施例の永久磁石片２７を形成
するマグネット板２８、２９と相違している。なお、両
マグネット板３８、３９の突合面３８ａ、３９ａも軸方
向に斜めに延びる面であると同時に同ロータコア２３の
ラジアル方向にも前述した実施例のマグネット板の突合
面２８ａ、２９ａの対向面と同様に傾斜した対向面に形
成されている。As shown in FIG. 6, a plurality of permanent magnet pieces 37 mounted on the outer peripheral surface of the rotor core 23 are provided with a pair of magnet plates as in the first and second embodiments. 38, 39, but each permanent magnet piece 37 consisting of both magnet plates 38, 39 is attached to the permanent magnet mounting seat 35 having the skew angle α described above. Since they are mounted in this order, both side surfaces 37a, 37a are formed as divergent tapered side surfaces complementary to the tapered side surfaces of the convex wall of the rotor core 23, and at the same time, the rotor shaft is shown on a plan view corresponding to the skew angle α. It is different from the magnet plates 28 and 29 forming the permanent magnet pieces 27 of the first and second embodiments in that they are formed as side surfaces extending obliquely in the direction. The abutting surfaces 38a and 39a of the two magnet plates 38 and 39 are also surfaces which extend obliquely in the axial direction, and are also opposed to the abutting surfaces 28a and 29a of the above-described magnet plate in the radial direction of the rotor core 23. It is formed on the inclined facing surface in the same manner as described above.
【００２０】なお、本実施例においても、各永久磁石片
３７は、ロータコア２３の周面の所定の取付座３５の位
置で、１対のマグネット板３８、３９における第１のマ
グネット板３８を先ず取付け、次いで、第２のマグネッ
ト板３９を、前者のマグネット板３８の横に滑り込ま
せ、両者の突合面３８ａ、３９ａを衝合させることによ
り取付ける組立工程が採られる点は前述の実施例と同じ
である。そして、このとき、衝合したマグネット板３
８、３９から成る永久磁石片３７の両側面３７ａ、３７
ａが、取付座３５の凸壁３４のテーパ面に密着、係合し
てロック構造を形成することは言うまでもない。また、
本第３実施例でも、各永久磁石片３７は、ロータコア２
３の外周面に接着剤で固定されることも同様である。Also in this embodiment, each of the permanent magnet pieces 37 is placed on the first magnet plate 38 of the pair of magnet plates 38, 39 first at a predetermined mounting seat 35 on the peripheral surface of the rotor core 23. The second embodiment is the same as the above-described embodiment in that an assembling step is employed in which the second magnet plate 39 is slid into the side of the former magnet plate 38, and the butting surfaces 38a, 39a are fitted together. It is. Then, at this time, the magnet plate 3
8 and 39, both side surfaces 37a, 37 of the permanent magnet piece 37
Needless to say, a closely contacts and engages with the tapered surface of the convex wall 34 of the mounting seat 35 to form a lock structure. Also,
Also in the third embodiment, each permanent magnet piece 37 is
The same applies to the case of fixing the outer peripheral surface of No. 3 with an adhesive.
【００２１】又、図６に示す実施例の同期機のロータ２
０ｂは、上述のように、組立工程の簡易化と共にロック
構造の形成によって永久磁石片３７の剥離、離脱の防止
効果を発揮し得ると同時に電気的にも、同永久磁石片３
７がロータ軸方向にスキュー角度αを有して配設されて
いるから、回転作動時に、対応の固定子１０のスロット
に起因して発生するトルクリップルをロータ磁極のスキ
ューにより低減させる効果を奏することができるのであ
る。The rotor 2 of the synchronous machine of the embodiment shown in FIG.
As described above, the simplification of the assembling process and the formation of the lock structure can exert the effect of preventing the permanent magnet pieces 37 from being separated and separated from each other, and at the same time, electrically, the permanent magnet pieces 3
7 are arranged with a skew angle α in the rotor axis direction, so that there is an effect of reducing the torque ripple generated due to the slot of the corresponding stator 10 by the skew of the rotor magnetic pole during the rotation operation. You can do it.
【００２２】図７及び図８は、本発明の第４実施例によ
る同期機のロータ２０ｃを示している。本実施例は、前
述の第３実施例に適用した永久磁石片３７を適用して構
成されるロータであり、本実施例が第３実施例と相違す
る点は、ロータコア２３の外周面に設けられるスキュー
角αを有した永久磁石取付座３５が更にロータ２０ｃの
周方向に所定のずれ角度θ２を有した複数（本例では３
つ）の永久磁石取付座３５ａ〜３５ｃで形成されている
点である。FIGS. 7 and 8 show a rotor 20c of a synchronous machine according to a fourth embodiment of the present invention. This embodiment is a rotor constituted by applying the permanent magnet piece 37 applied to the above-described third embodiment. The difference between this embodiment and the third embodiment is that the rotor is provided on the outer peripheral surface of the rotor core 23. A plurality of permanent magnet mounting seats 35 having a predetermined skew angle α and having a predetermined shift angle θ2 in the circumferential direction of the rotor 20c (3 in this example).
) Are formed by the permanent magnet mounting seats 35a to 35c.
【００２３】然しながら、この第４実施例でも、永久磁
石片３７を形成する１対のマグネット板３８、３９は、
既述の諸実施例と同様に、先ず、第１のマグネット板３
８を所定の永久磁石取付座３５ａ、３５ｂまたは３５ｃ
に取付け、次いで、その第１のマグネット板３８の横に
第２のマグネット板３９を滑り込ませるように突合面３
８ａ、３９ａで衝合させ、このとき、衝合したマグネッ
ト板３８、３９から成る一体の永久磁石片３７の両側面
３７ａ、３７ａは、各永久磁石取付座３５ａ、３５ｂ又
は３５ｃを形成する凸壁３４ａ、３４ｂ又は３４ｃの側
面のテーパ面に密着、係合により嵌入し、ロック構造を
形成するのである。従って、図８に示すように、ロータ
コア２３の外周面の全ての永久磁石取付座３５ａ〜３５
ｃに、永久磁石片３７を順次に、かつ、極めて簡単に装
着でき、しかも、このように機械的ロック構造を形成し
た結果、ロータ２０ｃの回転作用時に、各永久磁石片３
７に遠心力と磁気吸引力との合力が作用しても剥離、離
脱を起こすことはないのである。However, also in the fourth embodiment, the pair of magnet plates 38 and 39 forming the permanent magnet piece 37 are
As in the embodiments described above, first, the first magnet plate 3
8 to a predetermined permanent magnet mounting seat 35a, 35b or 35c.
Then, the second magnet plate 39 slides beside the first magnet plate 38 so that the abutting surfaces 3
8a, 39a, and at this time, both side surfaces 37a, 37a of the integral permanent magnet piece 37 composed of the abutted magnet plates 38, 39 are convex walls forming the respective permanent magnet mounting seats 35a, 35b or 35c. The lock structure is formed by closely fitting and engaging with the tapered surface of the side surface of 34a, 34b or 34c. Therefore, as shown in FIG. 8, all the permanent magnet mounting seats 35a to 35
c, the permanent magnet pieces 37 can be mounted sequentially and extremely easily, and the mechanical lock structure is formed as described above. As a result, each of the permanent magnet pieces 3
Even if the combined force of the centrifugal force and the magnetic attraction force acts on 7, no separation or separation occurs.
【００２４】なお、本実施例に係る同期機のロータ２０
ｃは、スキュー角度αと共に周方向へのずれ角度θ２を
有しているので、一層、トルクリップル低減効果を増強
することができるのである。The rotor 20 of the synchronous machine according to this embodiment
Since c has a deviation angle θ2 in the circumferential direction together with the skew angle α, the torque ripple reduction effect can be further enhanced.
【００２５】[0025]
【発明の効果】以上の実施例に基づく説明から明らかな
ように、本発明によれば、同期機の表面貼り付け式永久
磁石片を備えたロータを構成するに当たり、ロータコア
の実質的に円筒形の表面に略蟻溝状の凹形の永久磁石取
付座を形成し、かつ、この凹形の永久磁石取付座に嵌
入、固定する各永久磁石片を、１対のマグネット板部材
を所定の突合面で分離可能に衝合して構成し、同１対の
マグネット板部材の第１の部材を上記凹形の永久磁石取
付座を形成する凸壁が有するテーパ面に先ず密着、係合
させ、次いで第２のマグネット板部材を第１のマグネッ
ト部材の突合面に滑り込ませて対向の突合面を衝合させ
ることにより、簡単に組立可能とし、かつ、ロータコア
の凹形取付座との機械的なロック構造を形成するから、
ロータ外部から同期機の作動時に作用する遠心力と磁気
吸引力との合力を受けても永久磁石片に働く剥離、離脱
作用力にも充分、抗することが可能なロータが構成され
たのである。As is apparent from the description based on the above embodiments, according to the present invention, in forming a rotor having a surface-attached permanent magnet piece of a synchronous machine, a substantially cylindrical rotor core is used. A substantially dovetail-shaped concave permanent magnet mounting seat is formed on the surface of each of the surfaces, and each permanent magnet piece to be fitted and fixed in the concave permanent magnet mounting seat is joined to a pair of magnet plate members by a predetermined abutment. Firstly, the first member of the pair of magnet plate members is brought into close contact with and engaged with a tapered surface of a convex wall forming the concave permanent magnet mounting seat. Then, the second magnet plate member is slid into the abutting surface of the first magnet member to abut the opposing abutting surface, thereby enabling easy assembling and mechanical connection with the concave mounting seat of the rotor core. Because it forms a lock structure,
The rotor was configured to be able to sufficiently resist the separation and detachment acting forces acting on the permanent magnet pieces even when the combined force of the centrifugal force and the magnetic attraction force acting when the synchronous machine operates from the outside of the rotor. .
【００２６】しかも、この構造によれば、ロータを軸方
向に多段化してトルクリップル低減を図る場合にも、ロ
ータコアの外周側から第１のマグネット板部材を取付
け、次いで、その突合面へ第２のマグネット板部材の突
合面を滑り込ませることにより、同第２のマグネット板
部材もロータコアの凹所に機械的にロックした構造で取
付けることが簡単に達成可能であり、組立の容易性と剥
離、離脱防止構造の両条件を充足させることができるの
である。Further, according to this structure, even when the rotor is multi-staged in the axial direction to reduce the torque ripple, the first magnet plate member is attached from the outer peripheral side of the rotor core, and then the second magnet plate member is attached to the abutting surface. By sliding the abutting surface of the magnet plate member, the second magnet plate member can also be easily attached to the rotor core with a mechanically locked structure, thereby facilitating assembly and peeling. Both conditions of the separation prevention structure can be satisfied.
【００２７】従って、延いては、同期機の寿命と作用信
頼性とを向上させることが可能になった。また、ロータ
がリップルトルクの低減効果のために、その永久磁石片
をスキュー配列で設けたり、或いは周方向に位相角をず
らした配列で設けた場合にも、従来のロータ組立法に比
較して、本発明の永久磁石片の取付は、組立の工数に何
らの増加無く、組立を遂行でき、依って、ロータの製造
組立法がむしろ簡単化される効果を奏するのである。Accordingly, it has become possible to improve the life and operational reliability of the synchronous machine. Also, when the rotor is provided with its permanent magnet pieces in a skew arrangement or in an arrangement in which the phase angle is shifted in the circumferential direction for the effect of reducing the ripple torque, compared with the conventional rotor assembling method, The mounting of the permanent magnet piece of the present invention allows the assembly to be performed without any increase in the number of assembling steps, so that the method of manufacturing and assembling the rotor is rather simplified.
【００２８】以上、本発明を好実施例に就いて説明した
が、本発明の技術思想の範囲で、更に種々の改変、変更
例が実現可能であることは当業者なら自明であることは
言うまでもない。Although the present invention has been described with reference to the preferred embodiments, it is obvious to those skilled in the art that various modifications and alterations can be made within the scope of the technical concept of the present invention. No.
【図１】本発明による同期機のロータの第１の実施例を
示す斜視図である。FIG. 1 is a perspective view showing a first embodiment of a rotor of a synchronous machine according to the present invention.
【図２】同第１実施例のロータに用いる永久磁石片を構
成する１対のマグネット板を分離状態で示した斜視図で
ある。FIG. 2 is a perspective view showing a pair of magnet plates constituting a permanent magnet piece used in the rotor of the first embodiment in a separated state.
【図３】（ａ）は同第１実施例のロータの正面図であ
る。（ｂ）は（ａ）の３ー３線による端面図である。FIG. 3A is a front view of the rotor of the first embodiment. (B) is an end view along line 3-3 in (a).
【図４】本発明の第２の実施例による同期機用ロータの
正面図である。FIG. 4 is a front view of a rotor for a synchronous machine according to a second embodiment of the present invention.
【図５】本発明による同期機用ロータの第３実施例の正
面図である。FIG. 5 is a front view of a third embodiment of a synchronous machine rotor according to the present invention.
【図６】同第３実施例のロータに用いる永久磁石片の斜
視図である。FIG. 6 is a perspective view of a permanent magnet piece used for the rotor of the third embodiment.
【図７】本発明による同期機のロータの第４実施例を示
す斜視図である。FIG. 7 is a perspective view showing a fourth embodiment of the rotor of the synchronous machine according to the present invention.
【図８】同第４実施例のロータの正面図である。FIG. 8 is a front view of the rotor of the fourth embodiment.
【図９】（ａ）は、従来の同期機の貼り付け形ロータの
一例を示す正面図である。（ｂ）は、同側面図である。FIG. 9A is a front view showing an example of a pasted rotor of a conventional synchronous machine. (B) is the same side view.
【図１０】（ａ）は、従来の同期機の貼り付け形ロータ
の他の一例の正面図である。（ｂ）は、従来の同期機の
貼り付け形ロータの更に他の一例の側面図である。FIG. 10A is a front view of another example of the pasted rotor of the conventional synchronous machine. (B) is a side view of yet another example of the pasted rotor of the conventional synchronous machine.
１０…固定子 ２０、２０ａ〜２０ｃ…ロータ ２２…回転軸 ２３…ロータコア ２４…凸壁 ２４ａ…テーパ側面 ２５…永久磁石取付座 ２７…永久磁石片 ２７ａ…テーパ側面 ２８…マグネット板 ２８ａ…突合面 ２９…マグネット板 DESCRIPTION OF SYMBOLS 10 ... Stator 20, 20a-20c ... Rotor 22 ... Rotating shaft 23 ... Rotor core 24 ... Convex wall 24a ... Tapered side surface 25 ... Permanent magnet mounting seat 27 ... Permanent magnet piece 27a ... Tapered side surface 28 ... Magnet plate 28a ... Butt surface 29 … Magnet plate
Claims (7)
質的に円筒形のロータコアの表面に貼り付け固定された
複数の永久磁石片を有した同期機のロータにおいて、 前記円筒形ロータコアは、その外周面に周方向に所定の
間隔で配設されると共に略ロータの回転軸方向に長さを
有し、かつ、鳩尾断面形状を有した複数の凸壁を具備す
ることにより、該複数凸壁の相互に隣り合った凸壁間に
形成された複数の蟻溝状の凹所を前記永久磁石片の凹形
取付座として具備し、 また、前記ロータの磁極を形成する前記各永久磁石片
は、該ロータの回転軸と同方向に延長する突合面で２分
可能な１対の湾曲マグネット板からなると共に前記ロー
タコアの蟻溝状の凹形取付座に密着、係合により機械的
ロック構造を形成可能な末広なテーパ面を両側面に有
し、かつ、該１対のマグネット板の前記突合面は、前記
ロータコアの外周面に対して垂直なラジアル面から所定
の傾き角を有した傾斜突合面を成したことを特徴とする
同期機のロータ。1. A synchronous machine rotor having a plurality of permanent magnet pieces rotatably disposed on an inner periphery of a stator and attached and fixed to a surface of a substantially cylindrical rotor core, wherein the cylindrical rotor core is provided. Is provided at a predetermined interval in the circumferential direction on the outer peripheral surface thereof, has a length substantially in the rotation axis direction of the rotor, and has a plurality of convex walls having a dovetail cross-sectional shape. A plurality of dovetail-shaped recesses formed between adjacent ones of the plurality of convex walls are provided as concave mounting seats for the permanent magnet pieces, and each of the permanent magnets forming a magnetic pole of the rotor is provided. The magnet piece is formed of a pair of curved magnet plates that can be divided into two by abutment surfaces extending in the same direction as the rotation axis of the rotor, and is closely attached to and engaged with the dovetail-shaped concave mounting seat of the rotor core. Has divergent tapered surfaces on both sides that can form a lock structure And said abutting surface of the magnet plate of the pair, the rotor of the synchronous machine, characterized in that it has formed an inclined abutting surface having a predetermined inclination angle from a vertical radial plane with respect to the outer peripheral surface of the rotor core.
溝状の凹形取付座は夫々、前記ロータ回転軸と平行に軸
方向に延設された直線溝から成り、該直線溝内に、前記
１対のマグネット板から成る１ないし複数組の前記永久
磁石片が配設されて成る請求項１に記載の同期機のロー
タ。2. The plurality of substantially dovetail-shaped concave mounting seats of the rotor core each include a linear groove extending in the axial direction in parallel with the rotor rotation axis. 2. The synchronous machine rotor according to claim 1, wherein one or a plurality of sets of said permanent magnet pieces each comprising a pair of magnet plates are arranged.
溝状の凹形取付座は夫々、前記ロータ回転軸と平行に軸
方向に延設された所定長さの複数の部分直線溝を、複数
位置で前記ロータ回転軸に関して周方向に所定のずれ角
を備えて連設した非直線溝から成り、該非直線溝から成
る前記略蟻溝状の凹形取付座内に、前記１対のマグネッ
ト板から成る１ないし複数組の前記永久磁石片が配設さ
れて成る請求項１に記載の同期機のロータ。3. The plurality of substantially dovetail-shaped concave mounting seats of the rotor core each include a plurality of partial straight grooves each having a predetermined length and extending in an axial direction parallel to the rotor rotation axis. The pair of magnet plates includes a non-linear groove continuously provided with a predetermined offset angle in the circumferential direction with respect to the rotor rotation shaft at the position, and the substantially dovetail-shaped concave mounting seat formed by the non-linear groove. 2. The synchronous machine rotor according to claim 1, wherein one or more sets of said permanent magnet pieces are provided.
溝状の凹形取付座は夫々、前記ロータ回転軸に対して所
定の傾斜を有して軸方向に延設された直線溝から成り、
該傾斜直線溝から成る前記略蟻溝状の凹形取付座内に、
前記１対のマグネット板から成る１ないし複数組の前記
永久磁石片が配設されて成る請求項１に記載の同期機の
ロータ。4. The plurality of substantially dovetail-shaped concave mounting seats of the rotor core each comprise a straight groove extending in the axial direction with a predetermined inclination with respect to the rotor rotation shaft,
In the substantially dovetail-shaped concave mounting seat comprising the inclined straight groove,
2. The synchronous machine rotor according to claim 1, wherein one or a plurality of sets of the permanent magnet pieces each including the pair of magnet plates are provided. 3.
溝状の凹形取付座は夫々、前記ロータ回転軸に対して所
定の傾斜を有して軸方向に延設された所定長さの複数の
部分直線溝を複数位置で前記ロータ回転軸に関して周方
向に所定のずれ角を備えて連設した非直線溝から成り、
該非直線溝から成る前記略蟻溝状の凹形取付座内に、前
記１対のマグネット板から成る１ないし複数組の前記永
久磁石片が配設されて成る請求項１に記載の同期機のロ
ータ。5. The plurality of substantially dovetail-shaped concave mounting seats of the rotor core, each of which has a predetermined inclination with respect to the rotor rotation axis and has a plurality of predetermined lengths extending in the axial direction. Consisting of non-linear grooves continuously provided with a predetermined deviation angle in the circumferential direction with respect to the rotor rotation axis at a plurality of positions,
2. The synchronous machine according to claim 1, wherein one or a plurality of sets of said permanent magnet pieces comprising said pair of magnet plates are disposed in said substantially dovetail-shaped concave mounting seat comprising said non-linear groove. Rotor.
ネット板の下面と前記ロータコアの前記凹形取付座の底
面との間及び前記１対のマグネット板の前記突合面に接
着剤の塗布、硬化層を設けたことを特徴とする請求項１
〜５の何れか１項に記載の同期機のロータ。6. An adhesive is applied between the lower surfaces of the pair of magnet plates forming the respective permanent magnet pieces and the bottom surface of the concave mounting seat of the rotor core, and on the abutting surfaces of the pair of magnet plates. And a hardened layer is provided.
The rotor of the synchronous machine according to any one of claims 5 to 5.
複数の永久磁石片を固定した表面貼り付け形の同期機用
ロータの製造方法において、 前記円筒形のロータコアは、その外周面に周方向に所定
の間隔で配設されると共に略ロータの回転軸方向に長さ
を有し、かつ、鳩尾断面形状を有した複数の凸壁を設け
ることにより、該複数凸壁の相互に隣り合った凸壁間
に、複数の蟻溝状の凹所を前記永久磁石片の凹形取付座
として形成し、 また、前記ロータの磁極を形成する前記各永久磁石片
は、該ロータの回転軸と同方向に延長する突合面で２分
可能な１対の湾曲マグネット板からなると共に前記ロー
タコアの蟻溝状の凹形取付座に密着、係合により機械的
ロック構造を形成可能な末広なテーパ面を両側面に有
し、かつ、該１対のマグネット板の前記突合面は、前記
ロータコアの外周面に対して垂直なラジアル面から所定
の傾き角を有した傾斜突合面を成すように形成し、 前記各永久磁石片を、前記ロータコアの前記各凹形取付
座に取付けるに当たって、前記一対のマグネット板にお
ける第１のマグネット板を、前記ロータコアの蟻溝状の
凹形取付座における一端に向けて周方向に摺動、挿入し
て密着的にテーパ係合させ、 次いで、前記一対のマグネット板における第２のマグネ
ット板を、前記ロータコアの凹形取付座の一端に密着的
にテーパ係合させた前記第１のマグネット板と前記突合
面で衝合するように軸方向に摺動、係合させ、 このとき、同時に該第２のマグネット板の側面を、前記
ロータコアの蟻溝状凹形取付座の他の一端側に密着的に
テーパ係合させ、前記 永久磁石片を前記ロータコアに対して剥離、離脱が
防止されるように該ロータコアの外周面に固定すること
を特徴とした同期機のロータ製造方法。7. A method of manufacturing a surface-attached synchronous machine rotor in which a plurality of permanent magnet pieces are fixed to an outer peripheral surface of a substantially cylindrical rotor core, wherein the cylindrical rotor core has a circumferential surface. Are provided at predetermined intervals in the direction and have a length substantially in the direction of the rotation axis of the rotor, and are provided with a plurality of convex walls having a dovetail cross-sectional shape. A plurality of dovetail-shaped recesses are formed as concave mounting seats of the permanent magnet pieces between the convex walls, and each of the permanent magnet pieces forming the magnetic poles of the rotor is provided with a rotating shaft of the rotor. A divergent tapered surface consisting of a pair of curved magnet plates which can be divided into two by abutment surfaces extending in the same direction, and which can form a mechanical lock structure by being in close contact with and engaging with a dovetail-shaped concave mounting seat of the rotor core. On both sides, and the pair of magnet plates The abutment surface is formed to form an inclined abutment surface having a predetermined inclination angle from a radial surface perpendicular to the outer peripheral surface of the rotor core, and the permanent magnet pieces are attached to the concave mounting of the rotor core. At the time of attachment to the seat, the first magnet plate of the pair of magnet plates is slid in the circumferential direction toward one end of the dovetail-shaped concave mounting seat of the rotor core, and is tightly taperedly engaged. Then, the second magnet plate of the pair of magnet plates is brought into abutment with the first magnet plate, which is tapered into close contact with one end of the concave mounting seat of the rotor core, by the abutting surface. slide in the axial direction, engage, this time, at the same time the sides of the second magnet plates, adhesion to engaged tapered engagement to the other end side of the dovetail groove-shaped concave mounting seat of the rotor core, said permanent the magnet pieces Serial peeling against the rotor core, a rotor manufacturing method of a synchronous machine is characterized in that fixed to the outer peripheral surface of the rotor core as withdrawal is <br/> prevented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4007762A JP2795572B2 (en) | 1992-01-20 | 1992-01-20 | Synchronous machine rotor and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4007762A JP2795572B2 (en) | 1992-01-20 | 1992-01-20 | Synchronous machine rotor and method of manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05199685A JPH05199685A (en) | 1993-08-06 |
| JP2795572B2 true JP2795572B2 (en) | 1998-09-10 |
Family
ID=11674703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4007762A Expired - Fee Related JP2795572B2 (en) | 1992-01-20 | 1992-01-20 | Synchronous machine rotor and method of manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2795572B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09327140A (en) * | 1996-06-07 | 1997-12-16 | Hitachi Ltd | Electric rotating machine of permanent magnet rotation type and its manufacture |
| KR20010054562A (en) * | 1999-12-07 | 2001-07-02 | 송재인 | Rotor of direct current motor |
| KR100655994B1 (en) * | 1999-12-29 | 2006-12-08 | 두산인프라코어 주식회사 | An assembly structure of a rotor for servo motor |
| KR101104346B1 (en) * | 2007-12-20 | 2012-01-16 | 현대중공업 주식회사 | Rotor of outer-rotor type permanent magnet electric motor |
| WO2011001533A1 (en) * | 2009-07-03 | 2011-01-06 | 三菱電機株式会社 | Permanent magnetic rotating electric machine |
| CN103779993A (en) * | 2014-02-10 | 2014-05-07 | 王必生 | Core structure of skew-pole rotor of permanent magnet motor and laminating method thereof |
| KR102627297B1 (en) * | 2018-08-20 | 2024-01-22 | 엘지이노텍 주식회사 | Motor |
| KR102511565B1 (en) * | 2021-06-10 | 2023-03-17 | 이승권 | High Efficiency Motor |
-
1992
- 1992-01-20 JP JP4007762A patent/JP2795572B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05199685A (en) | 1993-08-06 |
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