JP2011229263A - Electric motor rotor - Google Patents

Electric motor rotor Download PDF

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Publication number
JP2011229263A
JP2011229263A JP2010096101A JP2010096101A JP2011229263A JP 2011229263 A JP2011229263 A JP 2011229263A JP 2010096101 A JP2010096101 A JP 2010096101A JP 2010096101 A JP2010096101 A JP 2010096101A JP 2011229263 A JP2011229263 A JP 2011229263A
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Prior art keywords
magnet
rotor core
rotor
fixing member
motor rotor
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Tomohiko Miyamoto
知彦 宮本
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Toyota Motor Corp
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Toyota Motor Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

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  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an electric motor rotor in which a magnet can be satisfactorily fixed on a rotor core without using an end plate or a resin mold material.SOLUTION: A rotor 30, which has a plurality of permanent magnets 50 and constitutes a motor 10 together with a stator 20, comprises: a rotor core 31 having a plurality of magnet support recesses 32 each of which supports a pair of the permanent magnets 50; and a plurality of magnet fixing members 40 each having a magnet pressing part 41 that abuts with the pair of permanent magnets 50 supported by the magnet support recess 32, a support part 42 extended from the magnet pressing part 41 and an attachment part 44 arranged on the support part 42 at the end opposite from the side of magnet pressing part 41 and fixed to the rotor core 31. At both ends of the permanent magnet 50, extension parts 51 are formed which are capable of abutting with either one of the end surface in the axial direction of the rotor core 31 or the end surface in the axial direction of the magnet pressing part 41.

Description

本発明は、複数の磁石を有し、ステータと共に電動機を構成する電動機ロータに関する。   The present invention relates to an electric motor rotor having a plurality of magnets and constituting an electric motor together with a stator.

従来、この種の電動機ロータとして、回転子鉄心と、この回転子鉄心の外周部に周方向に一定の間隔を存して設けられた複数の磁石挿入孔部と、これらの磁石挿入孔部にそれぞれ挿入固定された磁極形成用の永久磁石と、磁石挿入孔部の端部において回転子鉄心の外周との間にチップ部を形成するように設けられると共に永久磁石の端部の磁束漏洩を制限する逃げ孔部と、回転子鉄心の外周部に設けられて磁極の中心に対して所定の角度を存する位置からチップ部近傍の位置までの所定の範囲を有する外周溝部と、回転子鉄心の外周部に外周溝部に連なるように設けられてチップ部の外周をなすチップ溝部とを備えるものが知られている（例えば、特許文献１参照）。この電動機ロータでは、外周溝部に連なると共にチップ部の外周をなすチップ溝部が回転子鉄心の外周部に設けられていることから、外周溝部でトルクリプル、鉄損および高調波を低減可能となる。また、外周溝部の底部からチップ部の外周までにかけての連なり部分の段差が小さくなるので、回転子の回転によって永久磁石による遠心力を受けても当該連なり部分での応力の集中を生じ難くすることができる。   Conventionally, as this type of electric motor rotor, a rotor core, a plurality of magnet insertion holes provided at a constant interval in the circumferential direction on the outer periphery of the rotor core, and the magnet insertion holes It is provided so as to form a tip part between the permanent magnet for magnetic pole formation inserted and fixed and the outer periphery of the rotor core at the end of the magnet insertion hole, and restricts magnetic flux leakage at the end of the permanent magnet. A clearance hole portion, an outer peripheral groove portion having a predetermined range from a position at a predetermined angle with respect to the center of the magnetic pole to a position near the tip portion, provided on the outer peripheral portion of the rotor core, and the outer periphery of the rotor core There is known a device including a chip groove portion that is provided so as to be continuous with the outer peripheral groove portion and forms the outer periphery of the chip portion (see, for example, Patent Document 1). In this electric motor rotor, since the tip groove portion that is continuous with the outer peripheral groove portion and forms the outer periphery of the tip portion is provided in the outer peripheral portion of the rotor core, torque ripple, iron loss, and harmonics can be reduced in the outer peripheral groove portion. In addition, since the level difference of the continuous portion from the bottom of the outer peripheral groove portion to the outer periphery of the tip portion is reduced, it is difficult to cause stress concentration in the continuous portion even if the rotor is subjected to centrifugal force due to the rotation of the rotor. Can do.

特開２００８−２７８５５３号公報JP 2008-278553 A

ところで、上記従来の電動機ロータでは、回転子鉄心の両端部に略円環状のプレート（エンドプレート）を配置することで、永久磁石が磁石挿入孔部から軸方向外側へ飛び出すことを防止している。また、永久磁石と磁石挿入孔部との空隙に樹脂モールド材を充填することで、永久磁石を磁石挿入孔部内に確実に固定している。しかしながら、回転子鉄心の両端部にエンドプレートを配置すると、電動機ロータの軸方向長さが増大し、電動機の体格拡大を招くおそれがある。また、エンドプレートによる部品点数の増加や永久磁石固定のための樹脂モールド材の使用は、コストアップを招くため好ましくない。   By the way, in the above-described conventional motor rotor, by arranging substantially annular plates (end plates) at both ends of the rotor core, the permanent magnet is prevented from jumping out from the magnet insertion hole to the outside in the axial direction. . Moreover, the permanent magnet is reliably fixed in the magnet insertion hole by filling the resin mold material into the gap between the permanent magnet and the magnet insertion hole. However, if end plates are disposed at both ends of the rotor core, the axial length of the motor rotor increases, which may increase the size of the motor. In addition, the increase in the number of parts by the end plate and the use of a resin mold material for fixing the permanent magnets are not preferable because the cost increases.

本発明は、エンドプレートや樹脂モールド材を用いることなく磁石をロータコアに良好に固定可能な電動機ロータの提供を主目的とする。   An object of the present invention is to provide an electric motor rotor that can satisfactorily fix a magnet to a rotor core without using an end plate or a resin molding material.

本発明の電動機ロータは、上述の主目的を達成するために以下の手段を採った。   The electric motor rotor of the present invention employs the following means in order to achieve the main object described above.

本発明の電動機ロータは、複数の磁石を有し、ステータと共に電動機を構成する電動機ロータであって、
それぞれ一対の前記磁石を支持する複数の磁石支持凹部を有するロータコアと、
前記磁石支持凹部により支持された前記一対の磁石と当接する磁石押さえ部と、該磁石押さえ部から延出された支柱部と、該支柱部の前記磁石押さえ部とは反対側の端部に設けられて前記ロータコアに対して固定される取付部とを含む複数の磁石固定部材とを備え、
前記磁石の両端部には、前記ロータコアの軸方向端面および前記磁石押さえ部の軸方向端面の何れか一方と当接可能な延出部が形成されていることを特徴とする。 The motor rotor of the present invention is a motor rotor that has a plurality of magnets and constitutes the motor together with the stator,
A rotor core having a plurality of magnet support recesses each supporting a pair of the magnets;
Provided at a magnet pressing part that comes into contact with the pair of magnets supported by the magnet support concave part, a column part extending from the magnet pressing part, and an end of the column part opposite to the magnet pressing part A plurality of magnet fixing members including a mounting portion fixed to the rotor core.
At both ends of the magnet, extending portions capable of contacting either one of the axial end surface of the rotor core and the axial end surface of the magnet pressing portion are formed.

本発明の電動機ロータでは、ロータコアの複数の磁石支持凹部のそれぞれに一対の磁石が支持されると共に、当該一対の磁石と当接する磁石押さえ部を有する磁石固定部材が取付部を介してロータコアに固定される。これにより、磁石固定部材とロータコアの磁石支持凹部とにより一対の磁石が保持されてロータコアに固定される。そして、磁石は、ロータコアの軸方向端面および磁石押さえ部の軸方向端面の何れか一方に当接可能な延出部を両端部に有する。これにより、磁石の延出部がロータコアの軸方向端面および磁石押さえ部の軸方向端面の何れか一方と当接することで、ロータコアの軸方向における磁石の移動が規制されるため、磁石がロータコアの軸方向外側に飛び出すことを良好に抑制することができる。従って、本発明の電動機ロータでは、エンドプレートや樹脂モールド材を用いることなく磁石をロータコアに良好に固定することが可能となる。   In the electric motor rotor of the present invention, a pair of magnets are supported in each of the plurality of magnet support recesses of the rotor core, and a magnet fixing member having a magnet pressing portion that comes into contact with the pair of magnets is fixed to the rotor core via the mounting portion. Is done. Accordingly, the pair of magnets are held and fixed to the rotor core by the magnet fixing member and the magnet support recess of the rotor core. And a magnet has the extension part which can contact | abut either one of the axial direction end surface of a rotor core, or the axial direction end surface of a magnet holding | suppressing part in both ends. As a result, the magnet extension portion is in contact with either the axial end surface of the rotor core or the axial end surface of the magnet pressing portion, so that the movement of the magnet in the axial direction of the rotor core is restricted. It is possible to satisfactorily suppress jumping outward in the axial direction. Therefore, in the motor rotor of the present invention, it is possible to satisfactorily fix the magnet to the rotor core without using an end plate or a resin molding material.

また、前記ロータコアおよび前記磁石固定部材は、それぞれ複数の電磁鋼板を積層することにより構成されると共に、該磁石固定部材の前記取付部を貫通するように形成された孔部に挿通さえる軸部と、該軸部の両端部で前記ロータコアおよび前記取付部の軸方向端面の双方と当接可能な押さえ部とを含む固定具により締結されるものであってもよい。これにより、固定具によりロータコアや磁石固定部材を構成する各電磁鋼板の軸方向移動が規制されるため、エンドプレートを用いることなく、ロータコアや磁石固定部材を構成する複数の電磁鋼板を散開させないようにすることができる。   The rotor core and the magnet fixing member are each configured by laminating a plurality of electromagnetic steel plates, and a shaft portion inserted through a hole formed so as to penetrate the attachment portion of the magnet fixing member; Further, it may be fastened by a fixture including a pressing portion capable of coming into contact with both the rotor core and the axial end surface of the mounting portion at both end portions of the shaft portion. As a result, the axial movement of each electromagnetic steel plate constituting the rotor core and the magnet fixing member is restricted by the fixture, so that the plurality of electromagnetic steel plates constituting the rotor core and the magnet fixing member are not spread apart without using the end plate. Can be.

更に、前記ロータコアの前記磁石支持凹部は、該ロータコアの中心軸側から外周側に向かうほど互いに離間するように形成された一対の磁石支持面を有してもよく、前記磁石固定部材の前記磁石押さえ部は、外周側から前記支柱部に向かうほど互いに近接するように形成された一対の磁石当接面を有してもよい。これにより、磁石固定部材を用いることにより１つの磁石支持凹部に対して一対の磁石を容易かつ強固にＶ字状に配置することが可能となる。   Further, the magnet support recess of the rotor core may have a pair of magnet support surfaces formed so as to be separated from each other toward the outer peripheral side from the central axis side of the rotor core, and the magnet of the magnet fixing member The pressing portion may have a pair of magnet contact surfaces formed so as to be closer to each other as it goes from the outer peripheral side toward the support column. Thereby, a pair of magnets can be easily and firmly arranged in a V shape with respect to one magnet support recess by using the magnet fixing member.

また、前記磁石固定部材は、前記磁石押さえ部が前記ロータコアと接触しないように該ロータコアに対して固定されるものであってもよい。これにより、各磁石の端部付近において、磁石押さえ部とロータコアとの間に間隙が形成されることになるため、ロータコアに対して磁石の端部周辺に孔部を形成するための細幅の部位（チップ部等）を形成する必要がなくなり、ロータコアの強度を良好に確保しつつ磁石の端部付近における磁束漏洩を抑制することが可能となる。   The magnet fixing member may be fixed to the rotor core so that the magnet pressing portion does not contact the rotor core. As a result, a gap is formed between the magnet pressing portion and the rotor core in the vicinity of the end portion of each magnet. Therefore, a narrow width for forming a hole portion around the end portion of the magnet with respect to the rotor core. It is not necessary to form a part (a tip part or the like), and magnetic flux leakage near the end of the magnet can be suppressed while ensuring the strength of the rotor core.

更に、前記ロータコアの前記磁石支持凹部は、前記磁石固定部材の前記支柱部の両側に空間を画成するように形成されているものであってもよい。これにより、支柱部の両側の空間をできるだけ大きなものとすることで、磁石固定部材の取付部や支柱部を介した磁束漏洩をより一層良好に抑制することが可能となる。   Furthermore, the magnet support recess of the rotor core may be formed so as to define a space on both sides of the support column of the magnet fixing member. As a result, by making the space on both sides of the support column as large as possible, magnetic flux leakage through the attachment portion of the magnet fixing member and the support column can be more effectively suppressed.

本発明の実施例に係るロータ３０を備えたモータ１０の概略構成図である。It is a schematic block diagram of the motor 10 provided with the rotor 30 which concerns on the Example of this invention. モータ１０のロータ３０を構成するロータコア３１を示す断面図である。2 is a cross-sectional view showing a rotor core 31 that constitutes a rotor 30 of the motor 10. FIG. 磁石固定部材４０を示す断面図である。3 is a cross-sectional view showing a magnet fixing member 40. FIG. （ａ）は、永久磁石５０を示す斜視図であり、（ｂ）は、永久磁石５０の断面図である。(A) is a perspective view showing the permanent magnet 50, and (b) is a cross-sectional view of the permanent magnet 50. ロータ３０の組立の様子を示す斜視図である。FIG. 3 is a perspective view showing how the rotor 30 is assembled. ロータ３０の要部を示す断面図である。FIG. 3 is a cross-sectional view showing a main part of a rotor 30. ロータ３０の要部を示す拡大断面図である。3 is an enlarged cross-sectional view showing a main part of a rotor 30. FIG. 変形例に係るロータ３０ｂの要部を示す拡大断面図である。It is an expanded sectional view showing an important section of rotor 30b concerning a modification. 変形例に係るロータ３０ｃの要部を示す拡大断面図である。It is an expanded sectional view showing an important section of rotor 30c concerning a modification. 変形例に係るロータ３０ｄの要部を示す拡大断面図である。It is an expanded sectional view showing an important section of rotor 30d concerning a modification. 変形例に係るロータ３０ｅの要部を示す断面図である。It is sectional drawing which shows the principal part of the rotor 30e which concerns on a modification. 変形例に係るロータ３０ｆの要部を示す断面図である。It is sectional drawing which shows the principal part of the rotor 30f which concerns on a modification.

次に、本発明を実施するための形態を実施例を用いて説明する。   Next, the form for implementing this invention is demonstrated using an Example.

図１は、本発明の実施例に係るモータ１０の概略構成図である。同図に示すモータ１０は、電動機として作動すると共に発電機としても作動することができる同期発電電動機として構成されており、例えばハイブリッド自動車や電気自動車等に搭載される。実施例のモータ１０は、磁束を発生させるステータ２０と、磁極を構成する永久磁石５０を複数有すると共に回転シャフト１５に固定されるロータ３０とを備える。ステータ２０は、電磁鋼板等の磁性体からなる環状のステータコア２１と、例えば分布巻によりステータコア２１に装着されたＵ相コイル２２Ｕ、Ｖ相コイル２２ＶおよびＷ相コイル２２Ｗとを含む。また、ステータ２０と共にモータ１０を構成するロータ３０は、実施例ではそれぞれ断面矩形状を有する複数（実施例では１６個）の永久磁石５０に加えて、ロータコア３１と、複数の永久磁石５０をロータコア３１に対して固定するための複数の磁石固定部材４０とを含む。   FIG. 1 is a schematic configuration diagram of a motor 10 according to an embodiment of the present invention. The motor 10 shown in the figure is configured as a synchronous generator motor that can operate as an electric motor as well as a generator, and is mounted on, for example, a hybrid vehicle or an electric vehicle. The motor 10 according to the embodiment includes a stator 20 that generates magnetic flux, and a rotor 30 that has a plurality of permanent magnets 50 that constitute magnetic poles and is fixed to the rotary shaft 15. The stator 20 includes an annular stator core 21 made of a magnetic material such as an electromagnetic steel plate, and a U-phase coil 22U, a V-phase coil 22V, and a W-phase coil 22W that are mounted on the stator core 21 by distributed winding, for example. The rotor 30 that constitutes the motor 10 together with the stator 20 includes a rotor core 31 and a plurality of permanent magnets 50 in addition to a plurality of (16 in the embodiment) permanent magnets 50 each having a rectangular cross section in the embodiment. And a plurality of magnet fixing members 40 for fixing to 31.

図２は、ロータ３０を構成するロータコア３１を示す断面図である。実施例のロータコア３１は、図示するような断面形状を有する電磁鋼板等からなる板体を多数積層することにより構成され、その中心に回転シャフト１５が挿入・固定される中心孔３１ａを有する。また、ロータコア３１の外周部には、軸方向に延びる複数（実施例では、４５°間隔で合計８個）の磁石支持凹部３２が形成されている。各磁石支持凹部３２は、断面略逆三角形状の空間として構成されており、ロータコア３１の中心孔３１ａ（中心軸側）から外周側に向かうほど互いに離間するように形成された一対の磁石支持面３２ａをそれぞれ有する。そして、各磁石支持凹部３２の中心孔３１ａ（中心軸）側には、断面三角形状を有する挿入孔部３３が形成されている。   FIG. 2 is a cross-sectional view showing the rotor core 31 that constitutes the rotor 30. The rotor core 31 of the embodiment is configured by laminating a large number of plate bodies made of electromagnetic steel plates or the like having a cross-sectional shape as shown in the figure, and has a center hole 31a into which the rotary shaft 15 is inserted and fixed. In addition, a plurality of magnet support recesses 32 (in the embodiment, a total of eight at 45 ° intervals) extending in the axial direction are formed on the outer peripheral portion of the rotor core 31. Each of the magnet support recesses 32 is configured as a space having a substantially inverted triangular cross section, and a pair of magnet support surfaces formed so as to be separated from each other toward the outer peripheral side from the center hole 31a (center axis side) of the rotor core 31. 32a. An insertion hole 33 having a triangular cross section is formed on the side of the center hole 31 a (center axis) of each magnet support recess 32.

また、磁石固定部材４０は、図３に示すような断面形状を有する電磁鋼板等からなる板体を多数積層することにより構成される。すなわち、実施例の磁石固定部材４０は、断面略扇形状を有する磁石押さえ部４１と、磁石押さえ部４１から延出された支柱部４２と、支柱部４２の磁石押さえ部４１とは反対側の端部から延出された三角形状の取付部４４と、取付部４４の略中央部を貫通するように形成された孔部４５とを含む。磁石押さえ部４１の外周面は、ロータコア３１の半径ｄと同一の曲率半径を有する円周面とされている（図２参照）。そして、磁石押さえ部４１の２つの側面は、外周側から支柱部４２に向かうほど互いに近接するように形成されており、これら２つの側面は、上述のロータコア３１に形成された磁石支持凹部３２の一対の磁石支持面３２ａと共に一つの磁極を構成する一対（２つ）の永久磁石５０を挟持する一対の磁石当接面４１ａとして機能する。実施例において、磁石押さえ部４１の各磁石当接面４１ａは、磁石支持凹部３２の磁石支持面３２ａの対応する一方と平行になるように形成されている。また、支柱部４２は、磁石押さえ部４１の内周側の幅方向における中心部から延出され、取付部４４は、支柱部４２と直交するように当該支柱部４２の先端部分から延出される。実施例では、取付部４４が上述のロータコア３１の挿入孔部３３に挿入可能な寸法に形成されている。そして、磁石押さえ部４１の幅や高さ、支柱部の高さといった磁石固定部材４０の寸法は、取付部４４をロータコア３１の挿入孔部３３に挿入・固定した際に、磁石押さえ部４１がロータコア３１と接触することがないように定められる。   Moreover, the magnet fixing member 40 is comprised by laminating | stacking many plate bodies which consist of an electromagnetic steel plate etc. which have a cross-sectional shape as shown in FIG. That is, the magnet fixing member 40 according to the embodiment includes a magnet pressing portion 41 having a substantially fan-shaped cross section, a column portion 42 extending from the magnet pressing portion 41, and the magnet pressing portion 41 on the side opposite to the magnet pressing portion 41. It includes a triangular attachment portion 44 extending from the end portion, and a hole 45 formed so as to penetrate the substantially central portion of the attachment portion 44. The outer circumferential surface of the magnet pressing portion 41 is a circumferential surface having the same radius of curvature as the radius d of the rotor core 31 (see FIG. 2). The two side surfaces of the magnet pressing portion 41 are formed so as to be closer to each other toward the support column 42 from the outer peripheral side, and these two side surfaces are the magnet support recesses 32 formed in the rotor core 31 described above. It functions as a pair of magnet contact surfaces 41a that sandwich a pair (two) of permanent magnets 50 that constitute one magnetic pole together with the pair of magnet support surfaces 32a. In the embodiment, each magnet contact surface 41 a of the magnet pressing portion 41 is formed to be parallel to a corresponding one of the magnet support surfaces 32 a of the magnet support recess 32. Further, the column portion 42 extends from the center portion in the width direction on the inner peripheral side of the magnet pressing portion 41, and the attachment portion 44 extends from the tip portion of the column portion 42 so as to be orthogonal to the column portion 42. . In the embodiment, the attachment portion 44 is formed to have a size that can be inserted into the insertion hole 33 of the rotor core 31 described above. The dimensions of the magnet fixing member 40 such as the width and height of the magnet pressing portion 41 and the height of the support column are set so that when the mounting portion 44 is inserted and fixed in the insertion hole 33 of the rotor core 31, It is determined not to contact the rotor core 31.

図４（ａ）は、永久磁石５０を示す斜視図であり、図４（ｂ）は、永久磁石５０の断面図である。図示するように、永久磁石５０は、略直方体状に形成されており、長手方向の両端部から一側すなわちロータ３０の径方向外側（図中上方）に延出された一対の延出部５１を有する。これにより、永久磁石５０の一側（図中上側）の面には、底面５２ａとそれぞれ底面５２ａと直交する一対の側壁面５２ｂとを有する凹部５２が形成される。実施例では、一対の延出部５１は、凹部５２の底面５２ａの長手方向長さＬが複数の板体を多数積層してなる磁石固定部材４０の厚み（ロータ軸方向における長さ）よりも僅かに長くなるか、磁石固定部材４０の厚みと同一となるように永久磁石５０に形成される。   FIG. 4A is a perspective view showing the permanent magnet 50, and FIG. 4B is a cross-sectional view of the permanent magnet 50. As shown in the drawing, the permanent magnet 50 is formed in a substantially rectangular parallelepiped shape, and a pair of extending portions 51 that extend from one end of the longitudinal direction to one side, that is, radially outward (upward in the drawing) of the rotor 30. Have Thereby, a concave portion 52 having a bottom surface 52a and a pair of side wall surfaces 52b orthogonal to the bottom surface 52a is formed on one surface (upper side in the drawing) of the permanent magnet 50. In the embodiment, the pair of extending portions 51 has a length L in the longitudinal direction of the bottom surface 52a of the recess 52 that is greater than the thickness (length in the rotor axial direction) of the magnet fixing member 40 formed by laminating a plurality of plates. The permanent magnet 50 is formed so as to be slightly longer or the same as the thickness of the magnet fixing member 40.

上述のロータコア３１や磁石固定部材４０を含むロータ３０の組立に際しては、図５に示すように、仮組みした磁石固定部材４０の磁石押さえ部４１に形成された磁石当接面４１ａのそれぞれに永久磁石５０の凹部５２の底面５２ａ（図４参照）が当接するように、当該永久磁石５０の凹部５２を磁石押さえ部４１に嵌合させる（図５中矢印（１）参照）。これにより、永久磁石５０の両端部に形成された延出部５１すなわち凹部５２の側壁面５２ｂは、それぞれ磁石押さえ部４１の軸方向端面と当接するか、あるいは延出部５１すなわち凹部５２の側壁面５２ｂと磁石固定部材４０（磁石押さえ部４１）の軸方向端面との間の少なくとも何れか一方に若干の隙間が形成される。このように磁石固定部材４０の複数の磁石当接面４１ａのそれぞれに一対（２つ）の永久磁石５０を配置したならば、ロータコア３１の磁石支持凹部３２に形成された各磁石支持面３２ａが対応する永久磁石５０と当接するように取付部４４をロータコア３１の挿入孔部３３に挿入し（図５中矢印（２）参照）、ロータコア３１の各磁石支持凹部３２のそれぞれに対して磁石固定部材４０を配置する。   When the rotor 30 including the rotor core 31 and the magnet fixing member 40 described above is assembled, as shown in FIG. 5, each of the magnet contact surfaces 41a formed on the magnet pressing portion 41 of the temporarily assembled magnet fixing member 40 is permanently attached. The concave portion 52 of the permanent magnet 50 is fitted into the magnet pressing portion 41 so that the bottom surface 52a (see FIG. 4) of the concave portion 52 of the magnet 50 abuts (see arrow (1) in FIG. 5). As a result, the extension portions 51 formed at both ends of the permanent magnet 50, that is, the side wall surfaces 52b of the recesses 52 abut the axial end surfaces of the magnet pressing portions 41, respectively, or the extension portions 51, that is, the recesses 52 side. A slight gap is formed in at least one of the wall surface 52b and the axial end surface of the magnet fixing member 40 (magnet pressing portion 41). Thus, if a pair (two) of permanent magnets 50 are arranged on each of the plurality of magnet contact surfaces 41 a of the magnet fixing member 40, the magnet support surfaces 32 a formed in the magnet support recesses 32 of the rotor core 31 are formed. The attachment portion 44 is inserted into the insertion hole 33 of the rotor core 31 so as to contact the corresponding permanent magnet 50 (see arrow (2) in FIG. 5), and the magnet is fixed to each of the magnet support recesses 32 of the rotor core 31. The member 40 is disposed.

そして、図６に示すように、ロータコア３１および磁石固定部材４０は、取付部４４を貫通する孔部４５に挿通される軸部を有するボルト６０と、当該ボルト６０の軸部の両端部でロータコア３１および取付部４４の軸方向端面の双方と当接可能なサイズを有する押さえ部としてのワッシャ６１と、ボルト６０の軸部先端に螺合されるナット６２とからなる固定具により締結される。これにより、ロータコア３１と磁石固定部材４０は、ボルト６０、ワッシャ６１およびナット６２によりロータコア３１および磁石固定部材４０の軸方向両側から内側に向けて圧縮されるように締結される。この結果、ロータコア３１や磁石固定部材４０を構成する各電磁鋼板の軸方向移動が規制されるため、エンドプレートを用いることなく、ロータコア３１や磁石固定部材４０を構成する複数の電磁鋼板を散開させないようにすることができる。なお、上述のようにワッシャ６１を用いずに、ロータコア３１および取付部４４の軸方向端面の双方と当接可能なサイズを有する頭部をもったボルトと、ロータコア３１および取付部４４の軸方向端面の双方と当接可能なサイズを有するナットとを用いてロータコア３１および磁石固定部材４０を締結してもよい。また、ロータコア３１および取付部４４の軸方向端面の双方と当接可能なサイズを有する頭部をもったリベットの軸部を取付部４４を貫通する孔部４５に挿通すると共に、当該リベットの先端をロータコア３１および取付部４４の軸方向端面の双方と当接するように押しつぶすことで、ロータコア３１および磁石固定部材４０を締結してもよい。   As shown in FIG. 6, the rotor core 31 and the magnet fixing member 40 include a bolt 60 having a shaft portion inserted through a hole 45 passing through the attachment portion 44, and a rotor core at both ends of the shaft portion of the bolt 60. 31 and a fixing part including a washer 61 as a pressing part having a size capable of coming into contact with both the axial end surfaces of the attachment part 44 and a nut 62 screwed onto the tip end of the bolt 60. Thereby, the rotor core 31 and the magnet fixing member 40 are fastened by the bolt 60, the washer 61, and the nut 62 so as to be compressed inward from both axial sides of the rotor core 31 and the magnet fixing member 40. As a result, since the axial movement of each electromagnetic steel plate constituting the rotor core 31 and the magnet fixing member 40 is restricted, the plurality of electromagnetic steel plates constituting the rotor core 31 and the magnet fixing member 40 are not spread apart without using an end plate. Can be. As described above, without using the washer 61, a bolt having a head having a size capable of coming into contact with both the axial end surfaces of the rotor core 31 and the mounting portion 44, and the axial direction of the rotor core 31 and the mounting portion 44. The rotor core 31 and the magnet fixing member 40 may be fastened using a nut having a size capable of coming into contact with both end faces. In addition, the shaft portion of the rivet having a head having a size capable of coming into contact with both the rotor core 31 and the axial end surface of the attachment portion 44 is inserted into the hole 45 passing through the attachment portion 44, and the tip of the rivet The rotor core 31 and the magnet fixing member 40 may be fastened by crushing the rotor core 31 and both the axial end surfaces of the mounting portion 44 so as to contact each other.

こうしてロータ３０の組立が完了した段階では、各磁石固定部材４０の磁石押さえ部４１は、ロータコア３１と接触することなく磁石支持凹部３２により支持された一対の永久磁石５０と当接する。従って、磁石固定部材４０と磁石支持凹部３２とにより一対の永久磁石５０が保持された状態では、図７に示すように、各永久磁石５０の端部付近において磁石押さえ部４１とロータコア３１との間に間隙が形成され、各磁石固定部材４０の支柱部４２の両側には、図７に示すように空間が画成されることになる。   Thus, at the stage where the assembly of the rotor 30 is completed, the magnet pressing portions 41 of each magnet fixing member 40 abut against the pair of permanent magnets 50 supported by the magnet support recess 32 without contacting the rotor core 31. Therefore, in a state where the pair of permanent magnets 50 is held by the magnet fixing member 40 and the magnet support recess 32, the magnet pressing portion 41 and the rotor core 31 are located near the end of each permanent magnet 50 as shown in FIG. A gap is formed between them, and spaces are defined on both sides of the support column 42 of each magnet fixing member 40 as shown in FIG.

以上説明した実施例のロータ３０を備えたモータ１０では、ロータコア３１の複数の磁石支持凹部３２のそれぞれに一対の永久磁石５０が支持されると共に、当該一対の永久磁石５０と当接する磁石押さえ部４１を有する磁石固定部材４０が取付部４４を介してロータコア３１に固定される。これにより、磁石固定部材４０とロータコア３１の磁石支持凹部３２とにより一対の永久磁石５０が保持されてロータコア３１に固定される。そして、永久磁石５０の両端部には、それぞれ磁石押さえ部４１の軸方向端面と当接可能な延出部５１が形成されている。これにより、永久磁石５０がロータコア３１に対して軸方向に移動しても永久磁石５０の延出部５１が磁石固定部材４０（磁石押さえ部４１）の軸方向端面と当接することで当該永久磁石５０の軸方向への更なる移動が規制されるため、永久磁石５０がロータコア３１の軸方向外側に飛び出すことを良好に抑制することができる。従って、実施例のロータ３０では、エンドプレートや樹脂モールド材を用いることなく磁石をロータコア３１に良好に固定することが可能となる。   In the motor 10 including the rotor 30 according to the embodiment described above, a pair of permanent magnets 50 is supported in each of the plurality of magnet support recesses 32 of the rotor core 31 and the magnet pressing portion that contacts the pair of permanent magnets 50. A magnet fixing member 40 having 41 is fixed to the rotor core 31 via the mounting portion 44. Accordingly, the pair of permanent magnets 50 are held and fixed to the rotor core 31 by the magnet fixing member 40 and the magnet support recess 32 of the rotor core 31. And the extension part 51 which can contact | abut with the axial direction end surface of the magnet holding | suppressing part 41 is formed in the both ends of the permanent magnet 50, respectively. Thereby, even if the permanent magnet 50 moves in the axial direction with respect to the rotor core 31, the extended portion 51 of the permanent magnet 50 comes into contact with the axial end surface of the magnet fixing member 40 (magnet pressing portion 41), thereby the permanent magnet 50. Since the further movement of the 50 in the axial direction is restricted, it is possible to satisfactorily suppress the permanent magnet 50 from jumping out of the rotor core 31 in the axial direction. Therefore, in the rotor 30 of the embodiment, the magnet can be satisfactorily fixed to the rotor core 31 without using an end plate or a resin molding material.

また、上記実施例では、ロータコア３１および磁石固定部材４０は、それぞれ複数の電磁鋼板を積層することにより構成されると共に、取付部４４を貫通する孔部４５に挿通される軸部を有するボルト６０と、当該ボルト６０の軸部の両端部でロータコア３１および取付部４４の軸方向端面の双方と当接可能なサイズを有する押さえ部としてのワッシャ６１と、ボルト６０の軸部先端に螺合されるナット６２とからなる固定具により締結される。これにより、ロータコア３１や磁石固定部材４０を構成する各電磁鋼板の軸方向移動が規制されるため、エンドプレートを用いることなく、ロータコア３１や磁石固定部材４０を構成する複数の電磁鋼板を散開させないようにすることができる。   Further, in the above embodiment, the rotor core 31 and the magnet fixing member 40 are each configured by laminating a plurality of electromagnetic steel plates, and the bolt 60 having a shaft portion that is inserted into the hole portion 45 that penetrates the attachment portion 44. And a washer 61 as a pressing portion having a size capable of contacting both the axial end surfaces of the rotor core 31 and the mounting portion 44 at both ends of the shaft portion of the bolt 60, and screwed to the shaft portion tip of the bolt 60. The nut 62 is fastened by a fixing tool. Thereby, since the axial direction movement of each electromagnetic steel plate constituting the rotor core 31 and the magnet fixing member 40 is restricted, the plurality of electromagnetic steel plates constituting the rotor core 31 and the magnet fixing member 40 are not spread apart without using an end plate. Can be.

更に、ロータコア３１の磁石支持凹部３２は、ロータコア３１の中心軸側から外周側に向かうほど互いに離間するように形成された一対の磁石支持面３２ａを有し、磁石固定部材４０の磁石押さえ部４１は、外周側から支柱部４２に向かうほど互いに近接するように形成された一対の磁石当接面４１ａを有する。これにより、磁石固定部材４０を用いることにより１つの磁石支持凹部３２に対して一対の永久磁石５０を容易かつ強固にＶ字状に配置することが可能となる。   Further, the magnet support recess 32 of the rotor core 31 has a pair of magnet support surfaces 32 a formed so as to be separated from each other toward the outer peripheral side from the central axis side of the rotor core 31, and the magnet pressing portion 41 of the magnet fixing member 40. Has a pair of magnet contact surfaces 41 a formed so as to be closer to each other toward the support column 42 from the outer peripheral side. Thereby, by using the magnet fixing member 40, the pair of permanent magnets 50 can be easily and firmly arranged in a V shape with respect to one magnet support recess 32.

また、磁石固定部材４０は、磁石押さえ部４１がロータコア３１と接触しないようにロータコア３１に対して固定される。これにより、各永久磁石５０の端部付近において、磁石押さえ部４１とロータコア３１との間に間隙が形成されることになるため、ロータコア３１に対して永久磁石５０の端部周辺に孔部を形成するための細幅の部位（チップ部等）を形成する必要がなくなり、ロータコア３１の強度を良好に確保しつつ永久磁石５０の端部付近における磁束漏洩を抑制することが可能となる。   The magnet fixing member 40 is fixed to the rotor core 31 so that the magnet pressing portion 41 does not contact the rotor core 31. As a result, a gap is formed between the magnet pressing portion 41 and the rotor core 31 in the vicinity of the end of each permanent magnet 50, so that a hole is formed around the end of the permanent magnet 50 with respect to the rotor core 31. It is not necessary to form a narrow portion (chip portion or the like) for forming, and magnetic flux leakage near the end of the permanent magnet 50 can be suppressed while ensuring the strength of the rotor core 31 satisfactorily.

更に、上述のロータ３０では、支柱部４２の両側に空間が画成されるので、磁石固定部材４０の取付部４４や支柱部４２を介した磁束の回り込み、すなわち磁束漏洩を良好に抑制することが可能となる。また、支柱部４２付近の空間を拡大するために、図８に示すように、磁石固定部材４０の磁石押さえ部４１の内周側、すなわち支柱部４２の基端付近に凹部４１ｂを形成したり、磁石支持凹部３２の底部３２ｂを例えば断面略矩形状を有するように拡幅したりしてもよい。このように、支柱部４２の両側の空間をできるだけ大きなものとすることで、磁石固定部材４０の取付部４４や支柱部を介した磁束漏洩をより一層良好に抑制することが可能となる。   Further, in the rotor 30 described above, since spaces are defined on both sides of the support post portion 42, magnetic flux wraparound, that is, magnetic flux leakage through the mounting portion 44 of the magnet fixing member 40 and the support post portion 42 can be satisfactorily suppressed. Is possible. Further, in order to enlarge the space in the vicinity of the column portion 42, as shown in FIG. 8, a concave portion 41b is formed on the inner peripheral side of the magnet pressing portion 41 of the magnet fixing member 40, that is, in the vicinity of the proximal end of the column portion 42. The bottom 32b of the magnet support recess 32 may be widened so as to have a substantially rectangular cross section, for example. As described above, by making the space on both sides of the support column 42 as large as possible, magnetic flux leakage through the mounting portion 44 and the support column of the magnet fixing member 40 can be further suppressed.

なお、上記実施例において、ロータコア３１の磁石支持凹部３２の挿入孔部３３および磁石固定部材４０の取付部４４は、断面略三角形状を有するものとされているが、磁石固定部材４０をロータコア３１に強固に固定できるものであれば、これに限られるものではない。すなわち、挿入孔部３３および取付部４４の断面形状は、図９に示すような円形状とされてもよく、図１０に示すような２つの三角形を重ねたような形状とされてもよい。   In addition, in the said Example, although the insertion hole part 33 of the magnet support recessed part 32 of the rotor core 31 and the attachment part 44 of the magnet fixing member 40 are what has cross-sectional substantially triangular shape, the magnet fixing member 40 is the rotor core 31. However, it is not limited to this as long as it can be firmly fixed. That is, the cross-sectional shapes of the insertion hole portion 33 and the attachment portion 44 may be circular as shown in FIG. 9 or may be such that two triangles are overlapped as shown in FIG.

また、上記実施例の永久磁石５０は、磁石押さえ部４１の軸方向端面に当接可能な延出部５１を有するものであるが、エンドプレートを用いることなく当該永久磁石５０をロータ３０に固定すると共に、ロータ３０を組立可能なものであれば、永久磁石５０の構造は、上述のもの限られない。すなわち、永久磁石５０は、図１１に示すように、長手方向の両端部からロータ３０の径方向内側（図中下方）に延出されてロータコア３１の軸方向端面に当接可能な延出部５１ｅを有するものであってもよい。また、永久磁石５０は、図１２に示すように、軸方向一端部にロータ３０の径方向外側（図中上方）に延びる延出部５１ｆｏとロータ３０の径方向内側（図中下方）に延びる延出部５１ｆｉとを有すると共に、軸方向他端部にロータ３０の径方向外側あるいは径方向内側（図１２の例では径方向外側）に延びる延出部５１ｆを有するものであってもよい。なお、図１２の例において、軸方向他端部の延出部５１ｆと同じ側に延びる軸方向一端部の延出部５１ｆｏは省略されてもよい。   In addition, the permanent magnet 50 of the above embodiment has the extending portion 51 that can contact the end surface in the axial direction of the magnet pressing portion 41, but the permanent magnet 50 is fixed to the rotor 30 without using an end plate. In addition, as long as the rotor 30 can be assembled, the structure of the permanent magnet 50 is not limited to that described above. That is, as shown in FIG. 11, the permanent magnet 50 extends from both ends in the longitudinal direction to the inner side in the radial direction of the rotor 30 (downward in the drawing) and can be in contact with the axial end surface of the rotor core 31. 51e may be included. Further, as shown in FIG. 12, the permanent magnet 50 extends at one end in the axial direction to an extending portion 51 fo that extends radially outward (upward in the drawing) of the rotor 30 and radially inward (downward in the drawing) of the rotor 30. In addition to the extending portion 51fi, the other end portion in the axial direction may include an extending portion 51f extending radially outward or radially inward (in the example of FIG. 12, radially outward) of the rotor 30. In addition, in the example of FIG. 12, the extension part 51fo of the axial direction one end part extended on the same side as the extension part 51f of an axial direction other end part may be abbreviate | omitted.

実施例の主要な要素と課題を解決するための手段の欄に記載した発明の主要な要素との対応関係について説明する。実施例では、複数の永久磁石５０を有し、ステータ２０と共にモータ１０を構成するロータ３０が「電動機ロータ」に相等し、それぞれ一対の永久磁石５０を支持する複数の磁石支持凹部３２を有するロータコア３１が「ロータコア」に相等し、磁石支持凹部３２により支持された一対の永久磁石５０と当接する磁石押さえ部４１と、磁石押さえ部４１から延出された支柱部４２と、支柱部４２の磁石押さえ部４１とは反対側の端部に設けられてロータコア３１に対して固定される取付部４４とを含む複数の磁石固定部材４０が「磁石固定部材」に相等する。なお、実施例の主要な要素と課題を解決するための手段の欄に記載した発明の主要な要素との対応関係は、実施例が課題を解決するための手段の欄に記載した発明を実施するための形態を具体的に説明するための一例であることから、課題を解決するための手段の欄に記載した発明の要素を限定するものではない。即ち、課題を解決するための手段の欄に記載した発明についての解釈はその欄の記載に基づいて行なわれるべきものであり、実施例は課題を解決するための手段の欄に記載した発明の具体的な一例に過ぎないものである。   The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problems will be described. In the embodiment, the rotor core that includes the plurality of permanent magnets 50, the rotor 30 that constitutes the motor 10 together with the stator 20, is equivalent to the “motor rotor”, and includes the plurality of magnet support recesses 32 that respectively support the pair of permanent magnets 50. 31 is equivalent to the “rotor core”, a magnet pressing portion 41 that comes into contact with a pair of permanent magnets 50 supported by the magnet support recess 32, a column portion 42 extending from the magnet pressing portion 41, and a magnet of the column portion 42 A plurality of magnet fixing members 40 including an attachment portion 44 provided at an end opposite to the pressing portion 41 and fixed to the rotor core 31 are equivalent to a “magnet fixing member”. The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problem is the same as that of the embodiment described in the column of means for solving the problem. Therefore, the elements of the invention described in the column of means for solving the problems are not limited. That is, the interpretation of the invention described in the column of means for solving the problems should be made based on the description of the column, and the examples are those of the invention described in the column of means for solving the problems. It is only a specific example.

以上、本発明を実施するための形態について実施例を用いて説明したが、本発明はこうした実施例に何等限定されるものではなく、本発明の要旨を逸脱しない範囲内において、種々なる形態で実施し得ることは勿論である。   As mentioned above, although the form for implementing this invention was demonstrated using the Example, this invention is not limited at all to such an Example, In the range which does not deviate from the summary of this invention, it is with various forms. Of course, it can be implemented.

本発明は、電動機の製造産業に利用可能である。   The present invention is applicable to the motor manufacturing industry.

１０ モータ、１５ 回転シャフト、２０ ステータ、２１ ステータコア、２２Ｕ Ｕ相コイル、２２Ｖ Ｖ相コイル、２２Ｗ Ｗ相コイル、３０，３０ｂ，３０ｃ，３０ｄ，３０ｅ ロータ、３１，３１ｂ ロータコア、３１ａ 中心孔、３２ 磁石支持凹部、３２ａ 磁石支持面、３２ｂ 底部、３３ 挿入孔部、４０ 磁石固定部材、４１ 磁石押さえ部、４１ａ 磁石当接面、４１ｂ 凹部、４２ 支柱部、４４ 取付部、４５ 孔部、５０ 永久磁石、５１，５１ｅ，５１ｆ，５１ｆｉ，５１ｆｏ 延出部、５２ 凹部、５２ａ 底面、５２ｂ 側壁面、６０ ボルト、６１ ワッシャ，６２ ナット。   10 motor, 15 rotating shaft, 20 stator, 21 stator core, 22U U phase coil, 22V V phase coil, 22W W phase coil, 30, 30b, 30c, 30d, 30e rotor, 31, 31b rotor core, 31a center hole, 32 magnet Support recessed part, 32a Magnet support surface, 32b Bottom part, 33 Insertion hole part, 40 Magnet fixing member, 41 Magnet holding part, 41a Magnet contact surface, 41b Recessed part, 42 Supporting part, 44 Mounting part, 45 Hole part, 50 Permanent magnet 51, 51e, 51f, 51fi, 51fo Extension part, 52 recessed part, 52a bottom face, 52b side wall face, 60 bolt, 61 washer, 62 nut.

Claims (5)

複数の磁石を有し、ステータと共に電動機を構成する電動機ロータであって、
それぞれ一対の前記磁石を支持する複数の磁石支持凹部を有するロータコアと、
前記磁石支持凹部により支持された前記一対の磁石と当接する磁石押さえ部と、該磁石押さえ部から延出された支柱部と、該支柱部の前記磁石押さえ部とは反対側の端部に設けられて前記ロータコアに対して固定される取付部とを含む複数の磁石固定部材とを備え、
前記磁石の両端部には、前記ロータコアの軸方向端面および前記磁石押さえ部の軸方向端面の何れか一方と当接可能な延出部が形成されていることを特徴とする電動機ロータ。 An electric motor rotor having a plurality of magnets and constituting an electric motor together with a stator,
A rotor core having a plurality of magnet support recesses each supporting a pair of the magnets;
Provided at a magnet pressing part that comes into contact with the pair of magnets supported by the magnet support concave part, a column part extending from the magnet pressing part, and an end of the column part opposite to the magnet pressing part A plurality of magnet fixing members including a mounting portion fixed to the rotor core.
The motor rotor according to claim 1, wherein both ends of the magnet are formed with extending portions that can be in contact with any one of an axial end surface of the rotor core and an axial end surface of the magnet pressing portion. 請求項１に記載の電動機ロータにおいて、
前記ロータコアおよび前記磁石固定部材は、それぞれ複数の電磁鋼板を積層することにより構成されると共に、該磁石固定部材の前記取付部を貫通するように形成された孔部に挿通される軸部と、該軸部の両端部で前記ロータコアおよび前記取付部の軸方向端面の双方と当接可能な押さえ部とを含む固定具により締結されることを特徴とすることを特徴とする電動機ロータ。 The motor rotor according to claim 1,
The rotor core and the magnet fixing member are configured by laminating a plurality of electromagnetic steel plates, respectively, and a shaft portion inserted through a hole formed so as to penetrate the attachment portion of the magnet fixing member; An electric motor rotor characterized in that the electric motor rotor is fastened by a fixture that includes a pressing portion that can come into contact with both the rotor core and the axial end surface of the mounting portion at both ends of the shaft portion. 請求項１または２に記載の電動機ロータにおいて、
前記ロータコアの前記磁石支持凹部は、該ロータコアの中心軸側から外周側に向かうほど互いに離間するように形成された一対の磁石支持面を有し、
前記磁石固定部材の前記磁石押さえ部は、外周側から前記支柱部に向かうほど互いに近接するように形成された一対の磁石当接面を有することを特徴とする電動機ロータ。 In the motor rotor according to claim 1 or 2,
The magnet support recess of the rotor core has a pair of magnet support surfaces formed so as to be separated from each other toward the outer peripheral side from the central axis side of the rotor core,
The electric motor rotor, wherein the magnet pressing portion of the magnet fixing member has a pair of magnet contact surfaces formed so as to be closer to each other toward the support column from the outer peripheral side. 請求項１から３の何れか一項に記載の電動機ロータにおいて、
前記磁石固定部材は、前記磁石押さえ部が前記ロータコアと接触しないように該ロータコアに対して固定されることを特徴とする電動機ロータ。 In the electric motor rotor according to any one of claims 1 to 3,
The electric motor rotor, wherein the magnet fixing member is fixed to the rotor core so that the magnet pressing portion does not come into contact with the rotor core. 請求項１から４の何れか一項に記載の電動機ロータにおいて、
前記ロータコアの前記磁石支持凹部は、前記磁石固定部材の前記支柱部の両側に空間を画成するように形成されていることを特徴とする電動機ロータ。 In the motor rotor according to any one of claims 1 to 4,
The motor rotor, wherein the magnet support recess of the rotor core is formed so as to define a space on both sides of the support column of the magnet fixing member.
JP2010096101A 2010-04-19 2010-04-19 Electric motor rotor Pending JP2011229263A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015516135A (en) * 2012-05-02 2015-06-04 エイビービー テクノロジー アクチエンゲゼルシャフト Electric machine
CN108616180A (en) * 2018-07-23 2018-10-02 杨世国 A kind of combination type permanent-magnet rotor
DE102019117691A1 (en) * 2019-07-01 2021-01-07 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Method for manufacturing a rotor of an electrical machine and rotor of an electrical machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015516135A (en) * 2012-05-02 2015-06-04 エイビービー テクノロジー アクチエンゲゼルシャフト Electric machine
US9859762B2 (en) 2012-05-02 2018-01-02 Abb Schweiz Ag Electric machine with pole arrangement
CN108616180A (en) * 2018-07-23 2018-10-02 杨世国 A kind of combination type permanent-magnet rotor
DE102019117691A1 (en) * 2019-07-01 2021-01-07 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Method for manufacturing a rotor of an electrical machine and rotor of an electrical machine

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