JP5789504B2 - Permanent magnet motor - Google Patents

Permanent magnet motor Download PDF

Info

Publication number
JP5789504B2
JP5789504B2 JP2011282683A JP2011282683A JP5789504B2 JP 5789504 B2 JP5789504 B2 JP 5789504B2 JP 2011282683 A JP2011282683 A JP 2011282683A JP 2011282683 A JP2011282683 A JP 2011282683A JP 5789504 B2 JP5789504 B2 JP 5789504B2
Authority
JP
Japan
Prior art keywords
permanent magnet
type motor
outer rotor
rotor type
rotor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2011282683A
Other languages
Japanese (ja)
Other versions
JP2012217320A (en
Inventor
亮平 税所
亮平 税所
二瓶 秀樹
秀樹 二瓶
政英 山▲崎▼
政英 山▲崎▼
博昭 川島
博昭 川島
享兵 澤田
享兵 澤田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Industrial Equipment Systems Co Ltd
Original Assignee
Hitachi Industrial Equipment Systems Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Industrial Equipment Systems Co Ltd filed Critical Hitachi Industrial Equipment Systems Co Ltd
Priority to JP2011282683A priority Critical patent/JP5789504B2/en
Priority to CN2012200326303U priority patent/CN202488241U/en
Publication of JP2012217320A publication Critical patent/JP2012217320A/en
Application granted granted Critical
Publication of JP5789504B2 publication Critical patent/JP5789504B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Description

本発明は永久磁石モータに関し,特に表面型永久磁石を設けたロータ構造に係る。   The present invention relates to a permanent magnet motor, and more particularly to a rotor structure provided with a surface type permanent magnet.

従来のモータでは,例えば,特許文献1に記載のように,永久磁石を設けたロータ鉄心の軸方向両端に非磁性の当板を設けて,この当板により永久磁石の軸方向のズレを防止する構成が示されている。   In conventional motors, for example, as described in Patent Document 1, nonmagnetic abutting plates are provided at both axial ends of a rotor core provided with permanent magnets, and the axial displacement of the permanent magnets is prevented by the abutting plates. The configuration to be shown is shown.

特開2010−110117号公報JP 2010-110117 A

従来例では永久磁石の軸方向へのズレを抑えるために非磁性の当板をロータの両側に取付けている。本来,永久磁石は接着材によりロータに取付けられるので,接着材が硬化後には永久磁石の軸方向へのズレは生じない。あえて,永久磁石の移動防止手段をこのように二重に講じることにより信頼性を向上させているのである。   In the conventional example, in order to suppress the displacement of the permanent magnet in the axial direction, a nonmagnetic contact plate is attached to both sides of the rotor. Originally, since the permanent magnet is attached to the rotor by an adhesive, the permanent magnet does not shift in the axial direction after the adhesive is cured. Darely, the reliability is improved by providing the permanent magnet movement prevention means in this way.

しかしながら,専用の当板を設けるため,そのための寸法が必要となり,モータが大きくなるという問題がある。また,当板取付けの手間がかかるという問題もある。   However, since a dedicated abutment plate is provided, there is a problem that the size for that is required and the motor becomes large. In addition, there is a problem that it takes time and effort to mount the plate.

本発明を適用するモータは小型化・薄型化を指向するもので,例えばエレベータ装置の巻上機に用いることを想定すると,そのような用途では,エレベータの乗りかごが昇降する昇降路内の限られた空間にモータを組み込んだ巻上機を設置せざるを得ない。したがって,モータの小型,薄型の要求は顕著である。   The motor to which the present invention is applied is intended to be reduced in size and thickness. For example, assuming that the motor is used in a hoisting machine of an elevator apparatus, in such an application, the limit in the hoistway where the elevator car moves up and down is limited. There is no choice but to install a hoisting machine incorporating a motor in the space created. Therefore, the demand for small and thin motors is remarkable.

この場合,モータ寸法を大きくするのは避けなければならない。特に,単に当板を追加すると,軸長方向の寸法が大きくなり,モータの薄型化を実現することができない。   In this case, increasing the motor size must be avoided. In particular, simply adding this plate increases the axial length dimension, making it impossible to reduce the thickness of the motor.

したがって,永久磁石の軸長方向のズレを抑える構造を,薄型化を満足できる範囲で実現できることが本発明の課題である。   Therefore, it is an object of the present invention to realize a structure that suppresses the displacement in the axial length direction of the permanent magnet within a range in which the thickness reduction can be satisfied.

概略円板形状を有し、中央が回転軸に接続されたロータと、巻線を施したステータとを有するアウターロータ型モータであって、前記ロータが、回転軸方向に積層された複数の積層電磁鋼板からなるロータコアと、該ロータコアの内径側の周面に、接着により固定された複数の永久磁石とを回転軸方向の一方端面側に有するものであり、前記複数の電磁鋼板のうち、回転軸方向で前記ロータ側に配置された少なくとも1つの電磁鋼板が、前記内径側の周面に永久磁石が固定された電磁鋼板よりも迫出した面を内径側に有するものであり、前記永久磁石のロータ側端面の少なくとも一部が、前記迫出した面と接触するものであることにより、上記課題は解決できる。 An outer rotor type motor having a substantially disk shape, a rotor connected at the center to a rotating shaft, and a stator with windings, wherein the rotor is stacked in a direction of the rotating shaft A rotor core made of an electromagnetic steel sheet, and a plurality of permanent magnets fixed by adhesion to a peripheral surface on the inner diameter side of the rotor core on one end face side in the rotation axis direction. The at least one electromagnetic steel plate disposed on the rotor side in the axial direction has a surface on the inner diameter side that protrudes more than the electromagnetic steel plate having a permanent magnet fixed to the inner peripheral surface. The above-mentioned problem can be solved by at least a part of the rotor-side end surface of the rotor being in contact with the protruding surface .

本発明によれば、ロータを構成する積層電磁鋼板うち回転軸方向でロータ側に配置された少なくとも1つの電磁鋼板自体に、回転軸心方向に迫出した面を設けて永久磁石の軸長方向の移動を阻止することができので、薄型構造を保ったまま永久磁石固定を実現できるという効果がある。 According to the present invention, among the laminated electromagnetic steel sheets constituting the rotor, at least one electromagnetic steel sheet itself arranged on the rotor side in the rotation axis direction is provided with a surface protruding in the rotation axis direction so that the axial length direction of the permanent magnet Therefore, the permanent magnet can be fixed while maintaining the thin structure.

本発明の実施形態の永久磁石モータの横断面図Cross-sectional view of a permanent magnet motor according to an embodiment of the present invention 本発明の実施形態の永久磁石モータの縦断面図The longitudinal cross-sectional view of the permanent magnet motor of embodiment of this invention 本発明の実施形態の永久磁石モータロータの1極分の外観図1 is an external view of one pole of a permanent magnet motor rotor according to an embodiment of the present invention. 本発明の実施形態の永久磁石モータロータの1極分の永久磁石取付け前の外観図1 is an external view of a permanent magnet motor rotor according to an embodiment of the present invention before attaching a permanent magnet for one pole. 本発明の実施形態の永久磁石モータロータの縦断面の拡大図The enlarged view of the longitudinal cross-section of the permanent magnet motor rotor of embodiment of this invention 本発明の実施形態の永久磁石モータロータの永久磁石の無い状態での上面図The top view in the state without a permanent magnet of the permanent magnet motor rotor of embodiment of this invention 本実施形態を実現するための磁石固定部位が設けられたコア形状概略図Core shape schematic diagram provided with a magnet fixing part for realizing the present embodiment 専用の形状調整用の抜き型形状概略図Schematic diagram of die shape for exclusive shape adjustment 本実施形態を実現するための磁石固定部位が設けられていないコア形状概略図Core shape schematic diagram in which a magnet fixing part for realizing this embodiment is not provided 本発明の他の実施形態の永久磁石ロータの永久磁石の無い状態での上面図The top view in the state without a permanent magnet of the permanent magnet rotor of other embodiment of this invention 本発明の他の実施形態の永久磁石ロータの永久磁石の無い状態での上面図The top view in the state without a permanent magnet of the permanent magnet rotor of other embodiment of this invention 本発明の他の実施形態の永久磁石ロータの永久磁石の無い状態での上面図The top view in the state without a permanent magnet of the permanent magnet rotor of other embodiment of this invention 実施形態を応用した1極分の永久磁石取付け前の外観図External view before mounting a permanent magnet for one pole applying the embodiment 他の実施形態の構造を示した永久磁石取付け前の外観図External view showing the structure of another embodiment before attaching a permanent magnet 実施形態を応用した永久磁石ロータモータの永久磁石の無い状態での上面図Top view of the permanent magnet rotor motor to which the embodiment is applied without a permanent magnet

図1に本発明の実施形態の永久磁石モータの横断面図を示す。図2に本発明の実施形態の永久磁石モータの縦断面図を示す。図3に本発明の実施形態の永久磁石モータロータの1極分の外観図を示す。図4に本発明の実施の形態の永久磁石モータロータの1極分の永久磁石取付け前の外観図を示す。図5に本発明の実施形態の永久磁石モータロータの縦断面の拡大図,図6に本発明の実施形態の永久磁石モータロータに永久磁石の無い状態での上面図を示す。   FIG. 1 shows a cross-sectional view of a permanent magnet motor according to an embodiment of the present invention. FIG. 2 is a longitudinal sectional view of the permanent magnet motor according to the embodiment of the present invention. FIG. 3 shows an external view of one pole of the permanent magnet motor rotor according to the embodiment of the present invention. FIG. 4 shows an external view of the permanent magnet motor rotor according to the embodiment of the present invention before attaching a permanent magnet for one pole. FIG. 5 is an enlarged view of a longitudinal section of the permanent magnet motor rotor according to the embodiment of the present invention, and FIG. 6 is a top view of the permanent magnet motor rotor according to the embodiment of the present invention in a state where there is no permanent magnet.

図1に示すように,本実施の形態の永久磁石モータはロータ1がロータコア11と永久磁石12から構成されている多極のアウターロータ型のモータである。ロータコア11には溝が形成され,そこに永久磁石12が配置されるようになっている。ステータ2にはステータコア21にステータコイル22が施された集中巻きの構成で,ステータコア分割位置31にて複数のステータコアに分割されている。   As shown in FIG. 1, the permanent magnet motor of the present embodiment is a multipolar outer rotor type motor in which a rotor 1 is composed of a rotor core 11 and a permanent magnet 12. A groove is formed in the rotor core 11, and the permanent magnet 12 is arranged there. The stator 2 has a concentrated winding structure in which a stator coil 21 is provided on a stator core 21 and is divided into a plurality of stator cores at a stator core dividing position 31.

図2に示すように,本実施の形態の永久磁石モータは,ステータコイル22を巻いたステータコア21から成るステータ2がフレーム23に圧入され,フレーム23には固定シャフト24が圧入されており,この固定シャフト24に対して,永久磁石12を設けたロータコア11とが固定されて成るロータ1が軸受13によって回転自在に支承されている。   As shown in FIG. 2, in the permanent magnet motor of the present embodiment, a stator 2 composed of a stator core 21 around which a stator coil 22 is wound is press-fitted into a frame 23, and a fixed shaft 24 is press-fitted into the frame 23. A rotor 1 formed by fixing a rotor core 11 provided with a permanent magnet 12 to a fixed shaft 24 is rotatably supported by a bearing 13.

この実施の形態では,永久磁石12が40個,ステータコイルが48個と,スロット数対極数が48対40すなわち,12対10の系列の多極集中巻きモータを構成している。   In this embodiment, 40 permanent magnets 12 and 48 stator coils are used, and the number of slots versus the number of poles is 48:40, that is, a 12:10 series of multi-pole concentrated winding motor.

このスロット数極数については,モータの用途の回転数,出力等に応じて,種々選定することができるのはいうまでも無く,本実施の形態で開示しているのはその一例に過ぎない。本実施の形態では,ロータコアと永久磁石の構成に着目して,以下,詳細を説明する。   Needless to say, the number of slots and the number of poles can be variously selected according to the number of revolutions of the motor, the output, etc., and this embodiment discloses only one example. . In the present embodiment, the details will be described below, focusing on the configuration of the rotor core and the permanent magnet.

図3に本実施形態の永久磁石モータのロータコアの1極分の外観図について示すように,永久磁石12はロータコア11の凹状の溝部14に接着剤を介して接着固定されている。図4に本発明の永久磁石モータのロータコアの1極分について,永久磁石12を固定する前の外観図を示すが,ロータコア11の最下部に磁石固定部位15が設けられている。このロータコアは,最下部の1枚の電磁鋼板についてのみ,当該溝部14の当該部位の部分を張り出させるような形状として打ち抜いたものであり,当該電磁鋼板を最下部に配置し,その上に通常の溝形状をほどこした電磁鋼板を必要枚数打ち抜き,積層したものである。   As shown in the external view of one pole of the rotor core of the permanent magnet motor of this embodiment in FIG. 3, the permanent magnet 12 is bonded and fixed to the concave groove portion 14 of the rotor core 11 with an adhesive. FIG. 4 shows an external view before fixing the permanent magnet 12 for one pole of the rotor core of the permanent magnet motor of the present invention. A magnet fixing portion 15 is provided at the bottom of the rotor core 11. In this rotor core, only the lowermost electromagnetic steel sheet is punched out in such a shape as to project the portion of the groove portion 14, and the electromagnetic steel sheet is disposed at the lowermost part, The required number of magnetic steel sheets with a normal groove shape are punched and laminated.

図5に本実施形態の永久磁石モータのロータの断面図を示す。この図のように,ロータ1の円筒部位に対して,ロータコア11,永久磁石12が順次固定され,ロータを形成する。ここで,ロータは回転体を構成するためにロータコア11,永久磁石12が形成される円筒部位のみでなく,それらを出力軸に対して連結するために円板状の構造物と一体となって,概略カップ形状を成している。例えば,図2に示すように,ロータコア11の被取付体としてのロータ1がステータコア21を覆うようにして延在しており,ステータ2の外周部に突出するロータコア取付部の形状とあわせてカップ形状となっている。   FIG. 5 shows a cross-sectional view of the rotor of the permanent magnet motor of this embodiment. As shown in this figure, the rotor core 11 and the permanent magnet 12 are sequentially fixed to the cylindrical portion of the rotor 1 to form a rotor. Here, the rotor is integrated not only with the cylindrical portion where the rotor core 11 and the permanent magnet 12 are formed in order to form a rotating body, but also with a disk-like structure for connecting them to the output shaft. , It has a general cup shape. For example, as shown in FIG. 2, the rotor 1 as the mounted body of the rotor core 11 extends so as to cover the stator core 21, and the cup is combined with the shape of the rotor core mounting portion protruding from the outer peripheral portion of the stator 2. It has a shape.

先に述べたように,本永久磁石モータをエレベータ装置等に用いるには,モータを薄型にする必要がある。図4で示すと上下方向の寸法を小さくする必要がある。このため,モータの機能特性上必須であるロータコア,永久磁石の上下方向の寸法,すなわち積厚は必要十分な寸法を確保し,また,ロータはその使用状況から必要とする強度確保するために板の厚さを保たねばならない。よって,モータの積厚方向の寸法を小さく,薄型にするためには,図5上で示している永久磁石とロータ板との距離Aを極力小さくすることが重要となることは明白である。   As described above, in order to use this permanent magnet motor in an elevator apparatus or the like, it is necessary to make the motor thin. As shown in FIG. 4, it is necessary to reduce the vertical dimension. For this reason, the rotor core and permanent magnet, which are essential for the functional characteristics of the motor, must have sufficient vertical and vertical dimensions, that is, the thickness of the rotor, and the rotor must be secured to ensure the required strength from the usage conditions. The thickness of the must be kept. Therefore, it is obvious that it is important to make the distance A between the permanent magnet and the rotor plate shown in FIG. 5 as small as possible in order to reduce the thickness of the motor in the stacking direction and make it thinner.

ところで,通常,ロータ1は強度の観点から鋳鉄等で成形されており,磁性体である。したがって,永久磁石12とロータ1の間には磁気的吸引力が発生する。永久磁石12は接着材にてロータコア11に接着固定されるが,接着材が硬化するまでに若干の時間が要する。その間,永久磁石12がロータ1に引きつけられて,永久磁石12のロータコア11への取付け工程において,永久磁石12の位置がずれてしまう可能性がある。そこで,本実施形態のようにロータの円板上部分に近い側の電磁鋼板の一部を溝部14に張り出すような形状として,永久磁石12を保持することにより,永久磁石12がロータ1側にずれないようにできる。この形状を設ける電磁鋼板は1枚で十分であるため,以下では1枚の電磁鋼板の一部を溝部14に張り出す形状を設けたものとして説明する。   By the way, the rotor 1 is usually formed of cast iron or the like from the viewpoint of strength and is a magnetic body. Therefore, a magnetic attractive force is generated between the permanent magnet 12 and the rotor 1. The permanent magnet 12 is bonded and fixed to the rotor core 11 with an adhesive, but it takes some time for the adhesive to cure. In the meantime, the permanent magnet 12 is attracted to the rotor 1, and there is a possibility that the position of the permanent magnet 12 is shifted in the process of attaching the permanent magnet 12 to the rotor core 11. Therefore, as in the present embodiment, the permanent magnet 12 is held on the rotor 1 side by holding the permanent magnet 12 in such a shape that a part of the electromagnetic steel plate on the side close to the upper part of the disk of the rotor is projected to the groove portion 14. It can be avoided. Since only one electromagnetic steel sheet having this shape is sufficient, the following description will be made assuming that a shape in which a part of one electromagnetic steel sheet extends to the groove portion 14 is provided.

各部品の寸法により異なるが,永久磁石寸法として数十mm角で,厚さ十mm以下程度では,距離が数mm程度であれば,永久磁石12とロータ1との間の磁気吸引力は,数N程度であり,十分電磁鋼板の一部により永久磁石を保持することは可能である。   Although it depends on the dimensions of each part, if the permanent magnet dimensions are several tens of mm square and the thickness is about 10 mm or less, and the distance is about several mm, the magnetic attractive force between the permanent magnet 12 and the rotor 1 is It is about several N, and it is possible to hold the permanent magnet sufficiently by a part of the electromagnetic steel sheet.

図6に本発明の実施の形態の永久磁石モータロータの永久磁石が無い状態での上面図を示す。仮想的な永久磁石を点線で示し,その永久磁石の厚さDmに対して,ロータコア11の溝部14に積層電磁鋼板の最下部の1枚の電磁鋼板によりもうけた永久磁石固定部位15が永久磁石厚さ方向にH1,永久磁石の幅方向(ロータの回転方向)にL1の辺を有する三角形の形状を成して形成されている。H1は永久磁石厚さDmに対して,以下の関係がある。   FIG. 6 shows a top view of the permanent magnet motor rotor according to the embodiment of the present invention in a state where there is no permanent magnet. An imaginary permanent magnet is indicated by a dotted line, and a permanent magnet fixing portion 15 provided by one electromagnetic steel sheet at the bottom of the laminated electromagnetic steel sheet is provided in the groove portion 14 of the rotor core 11 with respect to the thickness Dm of the permanent magnet. It is formed in a triangular shape having a side H1 in the thickness direction and a side L1 in the width direction of the permanent magnet (rotation direction of the rotor). H1 has the following relationship with the permanent magnet thickness Dm.

Dm>2×H1 ・・・(1)
すなわち,H1はDmの略二分の一以下である。
Dm> 2 × H1 (1)
That is, H1 is approximately half or less of Dm.

また,L1は,永久磁石幅Lmの略四分の一以下である。   L1 is approximately equal to or less than a quarter of the permanent magnet width Lm.

この程度であれば,永久磁石の磁路を短絡するような影響も少なく,永久磁石の発揮する磁束を低減させて,モータ特性を悪化させるということもほとんど無い。   At this level, there is little effect of short-circuiting the magnetic path of the permanent magnet, and there is almost no deterioration in motor characteristics by reducing the magnetic flux exerted by the permanent magnet.

また,図6に示す溝部位の幅Lcに対して,永久磁石が溝からはみ出ることがないように,永久磁石の幅Lmはマイナス公差で形成されている。したがって,永久磁石は図の左右方向に若干バラついて取付けられる。この際,永久磁石固定部位15の長さL1はこのバラつきを考慮した余裕のある寸法を選択することはいうまでも無い。   Further, the width Lm of the permanent magnet is formed with a minus tolerance so that the permanent magnet does not protrude from the groove with respect to the width Lc of the groove portion shown in FIG. Therefore, the permanent magnets are attached with some variation in the horizontal direction in the figure. At this time, it goes without saying that the length L1 of the permanent magnet fixing portion 15 is selected with a margin that allows for this variation.

更に,永久磁石固定部位15は,概略三角形を形成しており,永久磁石固定部位15の張り出し部分に対してその根元部分を大きめに配分しているので,永久磁石固定部位15の図の奥行き方向への外力に対する強度を高めることができ,永久磁石のロータへの吸引力による変位を十分抑制することができる。   Further, the permanent magnet fixing part 15 forms a substantially triangular shape, and the root part is distributed more largely with respect to the projecting part of the permanent magnet fixing part 15, so that the permanent magnet fixing part 15 in the depth direction of the figure. It is possible to increase the strength against the external force to the rotor, and to sufficiently suppress the displacement due to the attractive force of the permanent magnet to the rotor.

図7に本発明の実施形態を実現するための磁石固定部位が設けられたコア形状概略図を示し、図8に本発明の実施形態を実現するための専用の形状調整用の抜き型形状概略図を示し、図9に本発明の実施形態を実現するための磁石固定部位が設けられていないコア形状概略図を示す。   FIG. 7 shows a schematic diagram of a core shape provided with a magnet fixing portion for realizing the embodiment of the present invention, and FIG. 8 schematically shows a die shape for exclusive shape adjustment for realizing the embodiment of the present invention. FIG. 9 shows a core shape schematic diagram in which a magnet fixing portion for realizing the embodiment of the present invention is not provided.

磁石固定部位15が設けられた電磁鋼板の形状と設けられていない電磁鋼板の形状は違うため、抜き型も別のものを用意する必要があり,2種類の型が必要となる。しかし、専用の形状調整用の抜き型を用意することにより、1種類の型で,本発明の実施形態が実現可能となる。具体的には次の通りである。   Since the shape of the electromagnetic steel plate provided with the magnet fixing part 15 is different from the shape of the electromagnetic steel plate not provided, it is necessary to prepare another punching die, and two types of die are required. However, an embodiment of the present invention can be realized with one type of mold by preparing a dedicated die for shape adjustment. Specifically, it is as follows.

初めに、図7のように1種類の型にて,永久磁石固定部位15が設けられた形状の電磁鋼板を作成する。その後、図8に点線で示した専用の形状調整用の抜き型16を用いて電磁鋼板を抜く。この抜き型16は局所的に形成された永久磁石固定部位15を取り除くために用いられる補助的な型であり、これにより、図9のような磁石固定部位15が設けられていない形状の電磁鋼板が作成でき,図7と図9の形状の電磁鋼板を組み合わせて積層することで本発明の実施形態に係るコアが作成できる。すなわち、補助的な型16を用い、二段階のステップでコア形状を形成することにより、1種類の主型で二種類のコアを作成することが可能となる。   First, as shown in FIG. 7, an electromagnetic steel sheet having a shape in which the permanent magnet fixing portion 15 is provided is prepared using one type of mold. Thereafter, the electromagnetic steel sheet is pulled out using a special shape adjusting punch 16 shown by a dotted line in FIG. This punching die 16 is an auxiliary die that is used to remove the locally formed permanent magnet fixing portion 15, and as a result, an electromagnetic steel sheet having a shape in which the magnet fixing portion 15 is not provided as shown in FIG. 9. The core according to the embodiment of the present invention can be created by combining and laminating the electromagnetic steel sheets having the shapes shown in FIGS. That is, by using the auxiliary mold 16 and forming the core shape in two steps, it is possible to create two types of cores with one type of main mold.

専用の形状調整用の抜き型16の寸法は、永久磁石厚さ方向の長さをDb,永久磁石の幅方向(ロータの回転方向)の長さをLbとしたとき、DbはH1以上、LbはL1以上とするのが望ましい。なお、このコア形状作成方法は一例であり、作成方法はこれに限らない。   The dimensions of the special shape adjustment die 16 are Db for the length of the permanent magnet in the thickness direction and Lb for the length of the permanent magnet in the width direction (rotor rotation direction). Is preferably L1 or more. This core shape creation method is an example, and the creation method is not limited to this.

図10に,本発明の他の実施形態の永久磁石ロータの永久磁石の無い状態での上面図を示す。   In FIG. 10, the top view in the state without a permanent magnet of the permanent magnet rotor of other embodiment of this invention is shown.

これは,ロータコア11に永久磁石固定部位15として,積層電磁鋼板の最下部の1枚の電磁鋼板について,溝の両端に概略矩形の部位を突出させたものである。その永久磁石厚さ方向の寸法H1は永久磁石厚さDmの略二分の一以下で,永久磁石幅方向の寸法L1は,永久磁石幅Lmの略四分の一以下である。   In this example, as a permanent magnet fixing portion 15 on the rotor core 11, a substantially rectangular portion is protruded at both ends of the groove of one electromagnetic steel plate at the bottom of the laminated electromagnetic steel plate. The dimension H1 in the permanent magnet thickness direction is approximately half or less of the permanent magnet thickness Dm, and the dimension L1 in the permanent magnet width direction is approximately one quarter or less of the permanent magnet width Lm.

この程度であれば,永久磁石の磁路を短絡するような影響も少なく,永久磁石の発揮する磁束を低減させて,モータ特性を悪化させるということもほとんど無い。   At this level, there is little effect of short-circuiting the magnetic path of the permanent magnet, and there is almost no deterioration in motor characteristics by reducing the magnetic flux exerted by the permanent magnet.

また,出張り寸法H1,L1を図6の実施形態の永久磁石固定部位15と同一としても,図6での永久磁石固定部位15の形状の場合よりも永久磁石を保持する面積が大きくなるので,永久磁石固定の機能を確実に実現できるという効果がある。   Further, even if the projecting dimensions H1 and L1 are the same as the permanent magnet fixing portion 15 in the embodiment of FIG. 6, the area for holding the permanent magnet is larger than the shape of the permanent magnet fixing portion 15 in FIG. , There is an effect that the permanent magnet fixing function can be realized with certainty.

図11に,本発明の他の実施形態の永久磁石ロータの永久磁石の無い状態での上面図を示す。   In FIG. 11, the top view in the state without a permanent magnet of the permanent magnet rotor of other embodiment of this invention is shown.

これは,ロータコア11に永久磁石固定部位15として,積層電磁鋼板の最下部の1枚の電磁鋼板について,溝の中央部に概略矩形の部位を局所的に突出させたものである。その永久磁石厚さ方向の寸法H1は,永久磁石厚さDmの略二分の一以下で,永久磁石幅方向の寸法L1は,永久磁石幅Lmの略二分の一以下である。   In this case, as a permanent magnet fixing portion 15 in the rotor core 11, a substantially rectangular portion is locally projected at the center of the groove of the lowermost electromagnetic steel plate of the laminated electromagnetic steel plate. The dimension H1 in the permanent magnet thickness direction is approximately half or less of the permanent magnet thickness Dm, and the dimension L1 in the permanent magnet width direction is approximately half or less of the permanent magnet width Lm.

この程度であれば,永久磁石の磁路を短絡するような影響も少なく,永久磁石の発揮する磁束を低減させて,モータ特性を悪化させるということもほとんど無い。   At this level, there is little effect of short-circuiting the magnetic path of the permanent magnet, and there is almost no deterioration in motor characteristics by reducing the magnetic flux exerted by the permanent magnet.

また,図6乃至,図10の実施形態の永久磁石固定部位15と比較して,溝中央部に配置されるので,永久磁石の溝に対する幅方向のズレが多少存在しても,永久磁石を確実に固定できるという効果がある。   6 to 10, the permanent magnet is disposed at the center of the groove as compared with the permanent magnet fixing portion 15 of the embodiment shown in FIG. There is an effect that it can be securely fixed.

図9に,本発明の他の実施形態の永久磁石ロータの永久磁石の無い状態での上面図を示す。   In FIG. 9, the top view in the state without a permanent magnet of the permanent magnet rotor of other embodiment of this invention is shown.

これは,ロータコア11に永久磁石固定部位15として,積層電磁鋼板の最下部の1枚の電磁鋼板について,溝の全幅に渡って概略矩形の部位を突出させたものである。その永久磁石厚さ方向の寸法H1は,永久磁石厚さDmの略二分の一以下である。   In this case, as a permanent magnet fixing portion 15 on the rotor core 11, a substantially rectangular portion is protruded over the entire width of the groove of one electromagnetic steel plate at the bottom of the laminated electromagnetic steel plate. The dimension H1 in the thickness direction of the permanent magnet is approximately half or less of the permanent magnet thickness Dm.

この程度であれば,永久磁石の磁路を短絡するような影響も少なく,永久磁石の発揮する磁束を低減させて,モータ特性を大きく悪化させるということは無い。ただし,図6,乃至図10,図11の実施形態の永久磁石固定部位15に比べて,その面積が大きくなるので,若干の特性への影響が生じる可能性は否めない。   If it is this level, there is little influence which short-circuits the magnetic path of a permanent magnet, the magnetic flux which a permanent magnet exhibits is reduced, and a motor characteristic is not deteriorated greatly. However, since the area is larger than that of the permanent magnet fixing portion 15 of the embodiment shown in FIGS. 6, 10, and 11, there is a possibility that a slight influence on the characteristics may occur.

ただし,薄型化のために永久磁石とロータ間距離を極力切り詰めるためには有効な構造であり,特性と寸法のトレードオフを鑑みて,本構成を採用することもありえる。   However, this is an effective structure for reducing the distance between the permanent magnet and the rotor as much as possible in order to reduce the thickness, and this configuration may be adopted in view of the trade-off between characteristics and dimensions.

図13に,本発明の実施形態を応用した永久磁石モータのロータコアの1極分を示す。この例は,積厚方向に複数の永久磁石を並べて貼り付けるロータを対象としている。そして、積層方向に互いに隣り合う永久磁石の間に中間磁石固定部位17を設けたものである。このため、永久磁石12が複数配置される部分の電磁鋼板は、既に述べた方法で作成された固定部位15と同様の形状であり、これを中間磁石固定部位17として利用するものとなっている。   FIG. 13 shows one pole portion of a rotor core of a permanent magnet motor to which the embodiment of the present invention is applied. This example is intended for a rotor in which a plurality of permanent magnets are arranged and pasted in the stacking direction. And the intermediate magnet fixing | fixed part 17 is provided between the permanent magnets mutually adjacent | abutted in the lamination direction. For this reason, the electrical steel sheet of the portion where a plurality of permanent magnets 12 are arranged has the same shape as the fixing portion 15 created by the method described above, and this is used as the intermediate magnet fixing portion 17. .

中間磁石固定部位17により、各々の永久磁石12に対し中間磁石固定部位17が隣接するため、積厚方向位置が固定され、積厚方向に並ぶ全ての永久磁石の積厚方向位置決めが可能となる。また、永久磁石12は磁石固定部位に挟まれる構造になるため、永久磁石12が積厚方向両方の位置決めが可能となる。   Since the intermediate magnet fixing portion 17 is adjacent to each permanent magnet 12 by the intermediate magnet fixing portion 17, the position in the stacking direction is fixed, and all the permanent magnets arranged in the stacking direction can be positioned in the stacking direction. . Further, since the permanent magnet 12 is sandwiched between the magnet fixing portions, the permanent magnet 12 can be positioned in both the stacking direction.

中間磁石固定部位17は、図7や図10〜図12に示した磁石固定部位15の大きさや形状でも同様な効果が得られることはいうまでも無い。また、図11は積厚方向に1個のロータだけ増加させた図であるが、それ以上に増加させても同様の効果が得られることはいうまでも無い。   Needless to say, the same effect can be obtained with the intermediate magnet fixing portion 17 even if the size and shape of the magnet fixing portion 15 shown in FIGS. 7 and 10 to 12 are used. Further, FIG. 11 is a diagram in which only one rotor is increased in the stacking direction, but it goes without saying that the same effect can be obtained even if it is increased beyond that.

図14に、本発明の他の実施形態を示す。図14も図13と同様に永久磁石モータのロータコアの1極分を示している。この例は、図3で示したロータコアの溝部に段差18を設けた構造である。この段差18は、ロータコア11の凹状の溝部14からさらに凹形状を設けたものであり、溝部14の表面からさらに窪んだ段差となっている。また、段差18の形成位置は図14に示す位置に限られないが、溝部14の周方向の両端部に形成するのが好ましい。この場合でもロータコア11の端面を形成する電磁鋼板には段差を設けずに磁石固定部位15が存在している。   FIG. 14 shows another embodiment of the present invention. FIG. 14 also shows one pole portion of the rotor core of the permanent magnet motor as in FIG. In this example, a step 18 is provided in the groove of the rotor core shown in FIG. The step 18 is a step further provided with a concave shape from the concave groove portion 14 of the rotor core 11, and is a step further recessed from the surface of the groove portion 14. Moreover, although the formation position of the level | step difference 18 is not restricted to the position shown in FIG. 14, forming in the both ends of the circumferential direction of the groove part 14 is preferable. Even in this case, the magnetic steel plate forming the end face of the rotor core 11 has the magnet fixing portion 15 without providing a step.

この構造により、接着剤を余分に塗布した場合でも段差18が受け口となり、永久磁石12が余分に塗布された接着剤によって浮き出すことを抑制できる。また、段差18部分が接着剤の流動路となったとしても、磁石固定部位15が余分な接着剤が流出するのを妨げる壁となり、ロータコアの溝部14から接着剤が漏れ出すことを防止することができる。   With this structure, even when an extra adhesive is applied, the step 18 becomes a receiving port, and the permanent magnet 12 can be prevented from being raised by the extra applied adhesive. Further, even if the step 18 portion becomes a flow path of the adhesive, the magnet fixing portion 15 becomes a wall that prevents the excess adhesive from flowing out, and prevents the adhesive from leaking out from the groove portion 14 of the rotor core. Can do.

図15に、本発明の他の実施形態を応用した永久磁石ロータの永久磁石の無い状態での上面図を示す。段差18が永久磁石厚さ方向にDa,永久磁石の幅方向(ロータの回転方向)にLaとしたとき,Daは永久磁石の厚さDmの略四分の一以下,またLaも永久磁石幅Lmの略四分の一以下程度にすれば,永久磁石の磁路を短絡するような影響も少なく,永久磁石の発揮する磁束を低減させて,モータ特性を悪化させるということもほとんど無い。   In FIG. 15, the top view in the state without a permanent magnet of the permanent magnet rotor to which other embodiment of this invention is applied is shown. When the step 18 is Da in the permanent magnet thickness direction and La in the permanent magnet width direction (rotor rotation direction), Da is approximately one quarter or less of the permanent magnet thickness Dm, and La is the permanent magnet width. If it is set to about one quarter or less of Lm, there is little influence of short-circuiting the magnetic path of the permanent magnet, and there is almost no deterioration in motor characteristics by reducing the magnetic flux exerted by the permanent magnet.

また、段差18はリサイクル時の永久磁石取り外し用の工具挿入部としても利用でき、ロータコア11から永久磁石12を引き剥がす時に有効となることが言える。   The step 18 can also be used as a tool insertion part for removing a permanent magnet during recycling, and can be said to be effective when the permanent magnet 12 is peeled from the rotor core 11.

段差18を付加した電磁鋼板の形状も、図8に示した塗部形状の専用の形状調整用の抜き型16を用いてコアを抜くことで作成できる。段差18を付加したコアを作成する際は、図8に示した塗部形状小型の型の寸法Dbを大きくしてコア部でオーバーハングさせて抜くことで作成できる。   The shape of the electrical steel sheet to which the step 18 is added can also be created by removing the core using the die 16 for shape adjustment dedicated to the shape of the coating portion shown in FIG. When creating the core with the step 18 added, it can be created by enlarging the dimension Db of the small coating portion shape mold shown in FIG.

専用の形状調整用の抜き型16が小さいとコアに突部が残るので磁石を設置する障害となる。したがって,専用の形状調整用の抜き型16は寸法公差として-0,+αのように,マイナス側はゼロとして,プラス側に公差をとるように設定するのが望ましく,実態としてオーバーハングせざるを得ない。したがって,段差18が出現するのが一般的である。本実施形態はこの段差18を敢えて形成させ、これを利用するものといえる。   If the special shape adjusting punch 16 is small, a protrusion remains in the core, which is an obstacle to installing the magnet. Therefore, it is desirable to set the exclusive shape adjusting die 16 to have a dimensional tolerance of -0, + α, zero on the negative side, and a tolerance on the positive side, and in reality, it will not overhang. I do not get. Therefore, the step 18 generally appears. In the present embodiment, it can be said that the step 18 is intentionally formed and used.

なお、このコア形状作成方法は一例であり、作成方法はこれに限らない。   This core shape creation method is an example, and the creation method is not limited to this.

本発明では,アウターロータの構成について実施形態を示し,説明したが,インナーロータの構成であっても,薄型化を測るためには外筐との寸法を切り詰めねばならず,同様な永久磁石固定部位を電磁鋼板に最端部に用いて,磁石を固定することを採用してもよい。その場合,同様な効果が得られることはいうまでも無い。   In the present invention, the embodiment of the outer rotor is shown and described. However, even in the case of the inner rotor, in order to reduce the thickness, the dimensions of the outer casing must be reduced, and the same permanent magnet fixing is performed. You may employ | adopt fixing a magnet using a site | part for an electromagnetic steel plate in the endmost part. In that case, it goes without saying that the same effect can be obtained.

積層電磁鋼板に溝を設けて永久磁石を接着固定する永久磁石モータにおいて,当該積層電磁鋼板の最端部の1枚の電磁鋼板に対して,永久磁石の軸長方向の移動を防止する永久磁石固定部位を突出させることにより,永久磁石モータのロータへの磁気吸引力による移動を防止し,薄型の永久磁石モータを容易に構成できる。   In a permanent magnet motor in which grooves are formed in a laminated electromagnetic steel sheet and the permanent magnet is bonded and fixed, the permanent magnet for preventing movement of the permanent magnet in the axial length direction with respect to one electromagnetic steel sheet at the end of the laminated electromagnetic steel sheet By projecting the fixed part, the permanent magnet motor can be prevented from moving to the rotor by the magnetic attractive force, and a thin permanent magnet motor can be easily configured.

特に,乗りかごが昇降する昇降路内に巻上機を配置する機械室レスエレベータ用の薄型巻上機用のモータに利用可能である。   In particular, the present invention can be used for a motor for a thin hoisting machine for a machine room-less elevator in which a hoisting machine is arranged in a hoistway where a car goes up and down.

1…ロータ、11…ロータコア、12…永久磁石、13…軸受、14…溝部、15…永久磁石固定部位、16…抜き型、17…中間磁石固定部位、18…段差、2…ステータ、21…ステータコア、22…ステータコイル、23…フレーム。   DESCRIPTION OF SYMBOLS 1 ... Rotor, 11 ... Rotor core, 12 ... Permanent magnet, 13 ... Bearing, 14 ... Groove part, 15 ... Permanent-magnet fixed part, 16 ... Punching die, 17 ... Intermediate magnet fixed part, 18 ... Level difference, 2 ... Stator, 21 ... Stator core, 22 ... stator coil, 23 ... frame.

Claims (9)

概略円板形状を有し、中央が回転軸に接続されたロータと、巻線を施したステータとを有するアウターロータ型モータであって、An outer rotor type motor having a substantially disk shape, a rotor having a center connected to a rotation shaft, and a stator provided with a winding;
前記ロータが、The rotor is
回転軸方向に積層された複数の積層電磁鋼板からなるロータコアと、該ロータコアの内径側の周面に、接着により固定された複数の永久磁石とを回転軸方向の一方端面側に有するものであり、A rotor core composed of a plurality of laminated electromagnetic steel sheets laminated in the direction of the rotation axis, and a plurality of permanent magnets fixed by bonding to the inner peripheral surface of the rotor core on one end face side in the direction of the rotation axis ,
前記複数の電磁鋼板のうち、回転軸方向でロータ側に配置された少なくとも1つの電磁鋼板のみが、前記内径側の周面に永久磁石が固定された電磁鋼板よりも迫出した面を内径側に有するものであり、前記永久磁石のロータ側端面の少なくとも一部が、前記迫出した面と接触するものであるアウターロータ型モータ。Of the plurality of electromagnetic steel sheets, only the at least one electromagnetic steel sheet arranged on the rotor side in the rotation axis direction has a surface protruding more than the electromagnetic steel sheet having a permanent magnet fixed to the inner peripheral surface. And an outer rotor type motor in which at least a part of a rotor side end surface of the permanent magnet is in contact with the protruding surface.
請求項1に記載のアウターロータ型モータにおいて,前記積層電磁鋼板は,前記永久磁石の周方向幅と略同一もしくは大きい幅で,前記永久磁石の回転軸心方向の厚さの略二分の一以下の深さの溝を有し、前記迫出した面の回転軸心方向に延びた長さは,前記永久磁石の厚さの略二分の一以下であり、かつ前記迫出した面のモータ周方向に延びた長さは溝幅の略四分の一以下となるものであるアウターロータ型モータ。 2. The outer rotor type motor according to claim 1, wherein the laminated electrical steel sheet has a width that is substantially the same as or larger than a circumferential width of the permanent magnet, and is approximately half or less of a thickness of the permanent magnet in a rotational axis direction. a groove depth, the rotation axis direction to a length extending in Sako out surface, the is substantially in one half or less the thickness of the permanent magnet, and a motor circumference of the Sako out surface An outer rotor type motor whose length extending in the direction is approximately a quarter or less of the groove width. 請求項2に記載のアウターロータ型モータにおいて、前記迫出した面が,前記溝の最外隅二箇所に設けられているものであるアウターロータ型モータ。 In the outer rotor type motor according to claim 2, wherein Sako out surface is an outer rotor type motor in which is provided at the outermost corner two points of said groove. 請求項3に記載のアウターロータ型モータにおいて、前記迫出した面の形状が略三角形状であるアウターロータ型モータ。 In the outer rotor type motor according to claim 3, the outer rotor type motor shape of the Sako out surface is substantially triangular. 請求項2に記載のアウターロータ型モータにおいて、前記迫出した面の形状が略矩形状であるアウターロータ型モータ。 In the outer rotor type motor according to claim 2, the outer rotor type motor shape of the Sako out surface is substantially rectangular. 請求項2に記載のアウターロータ型モータにおいて、前記迫出した面は,前記溝の中央部に局所的に設けられているであるアウターロータ型モータ。 In the outer rotor type motor according to claim 2, wherein Sako out surface is an outer rotor type motor in the central portion of the groove is provided locally. 請求項1に記載のアウターロータ型モータにおいて,前記積層電磁鋼板は,前記永久磁石の周方向幅と略同一もしくは大きい幅で,前記永久磁石の回転軸心方向の厚さの略二分の一以下の深さの溝を有し、前記迫出した面の回転軸心方向に延びた長さは,前記永久磁石の厚さの略二分の一以下となるものであるアウターロータ型モータ。 2. The outer rotor type motor according to claim 1, wherein the laminated electrical steel sheet has a width that is substantially the same as or larger than a circumferential width of the permanent magnet, and is approximately half or less of a thickness of the permanent magnet in a rotational axis direction. of a groove depth, the rotation axis length extending in the direction of Sako out surface is an outer rotor type motor in which substantially a half-less thickness of the permanent magnet. 請求項1〜のいずれか一項に記載のアウターロータ型モータにおいて、前記積層電磁鋼板の磁石接着面と電磁鋼板の境界部位に段差を設けたアウターロータ型モータ。 In the outer rotor type motor according to any one of claims 1 to 7 outer rotor type motor provided with a step at the boundary portion of the magnet bonding surface and the electromagnetic steel sheets of the laminated electromagnetic steel sheets. 請求項に記載のアウターロータ型モータにおいて、前記段差は前記溝の周方向の両端部に形成されるものであるアウターロータ型モータ。 In the outer rotor type motor according to claim 8, the outer rotor type motor wherein the step of which are formed at both end portions in the circumferential direction of the groove.
JP2011282683A 2011-03-30 2011-12-26 Permanent magnet motor Active JP5789504B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2011282683A JP5789504B2 (en) 2011-03-30 2011-12-26 Permanent magnet motor
CN2012200326303U CN202488241U (en) 2011-03-30 2012-02-02 Permanent magnet motor

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2011073885 2011-03-30
JP2011073885 2011-03-30
JP2011282683A JP5789504B2 (en) 2011-03-30 2011-12-26 Permanent magnet motor

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2015153054A Division JP6200920B2 (en) 2011-03-30 2015-08-03 Permanent magnet motor

Publications (2)

Publication Number Publication Date
JP2012217320A JP2012217320A (en) 2012-11-08
JP5789504B2 true JP5789504B2 (en) 2015-10-07

Family

ID=47269560

Family Applications (2)

Application Number Title Priority Date Filing Date
JP2011282683A Active JP5789504B2 (en) 2011-03-30 2011-12-26 Permanent magnet motor
JP2015153054A Active JP6200920B2 (en) 2011-03-30 2015-08-03 Permanent magnet motor

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP2015153054A Active JP6200920B2 (en) 2011-03-30 2015-08-03 Permanent magnet motor

Country Status (1)

Country Link
JP (2) JP5789504B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11949293B2 (en) 2018-09-28 2024-04-02 Nidec Corporation Rotor, method for manufacturing rotor, and motor

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014068753A1 (en) * 2012-11-01 2014-05-08 三菱電機株式会社 Electric motor with embedded permanent magnet, compressor, and refrigeration and air conditioning equipment
JP6301765B2 (en) * 2014-07-25 2018-03-28 アスモ株式会社 Rundel type rotor and Rundel type motor
KR102628348B1 (en) * 2016-08-03 2024-01-24 엘지이노텍 주식회사 Motor for drone and drone having the same
KR102668724B1 (en) * 2016-09-09 2024-05-24 엘지이노텍 주식회사 Motor for drone and drone having the same
DE102018109993A1 (en) * 2018-04-25 2019-10-31 Ebm-Papst St. Georgen Gmbh & Co. Kg Return ring and electrical external rotor motor
JP2020054211A (en) * 2018-09-28 2020-04-02 日本電産株式会社 motor
CN110943560A (en) * 2019-12-24 2020-03-31 太原理工大学 Permanent magnet outer rotor elevator
DE102022210700A1 (en) 2022-10-11 2024-04-11 Robert Bosch Gesellschaft mit beschränkter Haftung Electronically commutated electric motor of external rotor design and method for its manufacture

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6096162A (en) * 1983-10-26 1985-05-29 Hitachi Ltd Permanent magnet rotor
JP2002233122A (en) * 2001-02-05 2002-08-16 Matsushita Electric Ind Co Ltd Outer rotor motor, manufacturing method of the motor, and electric vehicle mounting the motor
JP2004357469A (en) * 2003-05-30 2004-12-16 Matsushita Electric Ind Co Ltd Motor
JP4550496B2 (en) * 2004-06-28 2010-09-22 株式会社東芝 Electric motor rotor
JP2006025508A (en) * 2004-07-07 2006-01-26 Nsk Ltd Motor for electric power steering system and electric power steering system
JP2009268200A (en) * 2008-04-23 2009-11-12 Yaskawa Electric Corp Rotor core and motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11949293B2 (en) 2018-09-28 2024-04-02 Nidec Corporation Rotor, method for manufacturing rotor, and motor

Also Published As

Publication number Publication date
JP2012217320A (en) 2012-11-08
JP6200920B2 (en) 2017-09-20
JP2015195725A (en) 2015-11-05

Similar Documents

Publication Publication Date Title
JP5789504B2 (en) Permanent magnet motor
JP4599088B2 (en) Rotor for rotating electrical machine and method for manufacturing the same
JP2008141859A (en) Laminated core structure for electric motor
JP5012155B2 (en) Laminated core and rotating electric machine
JP5660058B2 (en) Core block, stator, rotating electric machine, and manufacturing method of core block
JP2014045634A (en) Rotor and rotary electric machine including the same
JP2004304958A (en) Permanent-magnetic motor
JP2012115016A (en) Rotating electric machine
JP2014147254A (en) Rotor of permanent magnet dynamo-electric machine, and permanent magnet dynamo-electric machine
JP5693521B2 (en) Permanent magnet embedded motor
CN202488241U (en) Permanent magnet motor
JP3877620B2 (en) Concentrated winding DC motor and compressor equipped with the same
JP2021087231A (en) Rotor of rotary electric machine
JP2012231586A (en) Rotating electric machine
JP2020010539A (en) Rotor and brushless motor
JP5444756B2 (en) IPM motor rotor and IPM motor
JP2000245124A (en) Smooth core armature wound motor
JP6462714B2 (en) Axial gap type rotating electrical machine and insulating member
JP2014050274A (en) Rotor for surface magnet affixed rotary electric machine
JP5404230B2 (en) Axial gap type motor
JP5183313B2 (en) Permanent magnet rotating electric machine and elevator apparatus using the same
JP5863694B2 (en) Permanent magnet embedded electric motor, compressor and refrigeration air conditioner
JP7038527B2 (en) Manufacturing method of magnetic wedge for rotary electric machine, magnetic wedge for rotary electric machine, and rotary electric machine
JP2007110868A (en) Permanent magnet type motor
JP2010142000A (en) Stator core, stator and axial type motor

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20140205

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20140205

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20141118

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20141119

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20150119

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

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20150707

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20150803

R150 Certificate of patent or registration of utility model

Ref document number: 5789504

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150