JP2013034335A - Rotor structure of magnet-embedded motor - Google Patents

Rotor structure of magnet-embedded motor Download PDF

Info

Publication number
JP2013034335A
JP2013034335A JP2011169769A JP2011169769A JP2013034335A JP 2013034335 A JP2013034335 A JP 2013034335A JP 2011169769 A JP2011169769 A JP 2011169769A JP 2011169769 A JP2011169769 A JP 2011169769A JP 2013034335 A JP2013034335 A JP 2013034335A
Authority
JP
Japan
Prior art keywords
magnet
rotor core
insertion hole
embedded
magnet insertion
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.)
Pending
Application number
JP2011169769A
Other languages
Japanese (ja)
Inventor
Yuichi Miyazawa
優一 宮沢
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.)
Tamagawa Seiki Co Ltd
Original Assignee
Tamagawa Seiki 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 Tamagawa Seiki Co Ltd filed Critical Tamagawa Seiki Co Ltd
Priority to JP2011169769A priority Critical patent/JP2013034335A/en
Publication of JP2013034335A publication Critical patent/JP2013034335A/en
Pending legal-status Critical Current

Links

Images

Abstract

PROBLEM TO BE SOLVED: To prevent an embedded magnet from dropping off by forming a deformation section on both ends of a laminated rotor core.SOLUTION: A rotor structure of magnet-embedded motor is structured so that a magnet (8) in each magnet insertion hole (3) is prevented from dropping off to the outside by forming the plurality of magnet insertion holes (3) on the peripheral edge of a laminated rotor core (1) formed from many laminated rotor core plates (2) and inserting each of the magnets into the holes to deform both ends of the respective magnet insertion holes (3).

Description

本発明は、磁石埋め込み型モータ用ロータ構造に関し、特に、積層ロータコアの両端に変形部を形成させることにより、埋め込んだ磁石の抜け止めを行うための新規な改良に関する。   The present invention relates to a rotor structure for a magnet-embedded motor, and more particularly to a novel improvement for preventing a buried magnet from coming off by forming deformed portions at both ends of a laminated rotor core.

従来、用いられていたこの種の磁石埋め込み型モータ用ロータ構造としては、例えば、特許文献１の永久磁石埋め込み型モータ用回転子の構成を挙げることができる。
すなわち、図４において符号１で示されるものは、輪状のロータコア板を積層させてなる積層ロータコアであり、この積層ロータコア１の周縁の内部には、４個の磁石挿入孔３が各端面４，４間に貫通して形成されている。 An example of this type of rotor structure for an embedded magnet motor that has been used conventionally is the configuration of a rotor for an embedded permanent magnet motor disclosed in Patent Document 1.
That is, what is indicated by reference numeral 1 in FIG. 4 is a laminated rotor core formed by laminating ring-shaped rotor core plates, and four magnet insertion holes 3 are provided in the end faces 4 in the periphery of the laminated rotor core 1. It is formed so as to penetrate between the four.

前記積層ロータコア１の軸心位置には回転軸６を貫通して設けるための軸貫通孔７が設けられ、前記各磁石挿入孔３内には長手状の磁石が挿入されている。
前記各磁石挿入孔３の縁部には、図５で示されるように、各凹部１０が形成されることにより凸部１１が形成され，この各凸部１１が磁石８側に突出することにより、磁石８の端面に各凸部１１が当接し、各磁石挿入孔３から各磁石８が外部に抜けることを防止している。
さらに、前記積層ロータコア１の両端には、一対の端板１２，１３が前記回転軸６を軸孔７ａを介して外部に突出させた状態で装着されている。 A shaft through hole 7 for penetrating the rotary shaft 6 is provided at the axial center position of the laminated rotor core 1, and a long magnet is inserted into each magnet insertion hole 3.
As shown in FIG. 5, a convex portion 11 is formed at the edge of each magnet insertion hole 3 by forming each concave portion 10, and each convex portion 11 protrudes toward the magnet 8 side. The convex portions 11 are in contact with the end surfaces of the magnets 8 to prevent the magnets 8 from coming out of the magnet insertion holes 3 to the outside.
Further, a pair of end plates 12 and 13 are attached to both ends of the laminated rotor core 1 in a state where the rotating shaft 6 protrudes to the outside through the shaft hole 7a.

特開２００７−３７２０２号公報JP 2007-37220 A

従来の永久磁石埋め込み型モータ用回転子は、以上のように構成されていたため、次のような課題が存在していた。
すなわち、積層ロータの磁石挿入孔内に磁石を挿入し、凸部によって磁石を係止した後、積層ロータの両端に一対の端板を装着しなければならず、組立て作業が煩雑であると
共に、部品点数も多くなり、大量生産向きではなかった。
また、図示していないが、ロータの外周に接着によって磁石を貼り付ける方法もあるが、接着作業、硬化のための温度槽管理等が必要となり、接着剤の経年劣化による不良発生等に問題があった。 Since the conventional permanent magnet embedded rotor for the motor is configured as described above, the following problems exist.
That is, after inserting a magnet into the magnet insertion hole of the laminated rotor and locking the magnet by the convex part, it is necessary to attach a pair of end plates to both ends of the laminated rotor, and the assembly work is complicated, The number of parts also increased, and it was not suitable for mass production.
Although not shown, there is also a method of attaching a magnet to the outer periphery of the rotor by adhesion, but it is necessary to manage the temperature tank for adhesion work, curing, etc., and there is a problem with the occurrence of defects due to deterioration of the adhesive over time. there were.

本発明による磁石埋め込み型モータ用ロータ構造は、多数のロータコア板を軸方向に積層してなる積層ロータコアの周縁に複数の磁石を埋設するようにした磁石埋め込み型モータ用ロータ構造において、前記ロータコア板は、半径方向の板幅を有する輪状板と、前記輪状板の外周に所定間隔で前記半径方向に沿って延設された柱部と、前記各柱部の外端に設けられ前記外周に沿って輪状をなす筒部と、前記筒部の内側で前記各柱部によって区画され前記軸方向に沿って延設された複数の磁石挿入孔とからなり、前記磁石挿入孔内には前記磁石が挿入され、前記磁石挿入孔の両端には、前記筒部の一部を内側へ変形させた変形部を備え、前記変形部により前記磁石挿入孔内の前記磁石が前記磁石挿入孔内から外部に抜け出ることを防止する構成であり、また、前記変形部は、前記ロータコア板を一枚又は複数枚を曲折させてなる構成であり、また、前記ロータコア板の軸心位置には、軸貫通孔が形成され、前記軸貫通孔には回転軸が嵌入されている構成であり、また、前記筒部に形成され前記磁石挿入孔に対応する挿入孔対応部は、断面弧状形をなしている構成であり、また、前記積層ロータコアの両端の前記ロータコア板の前記磁石挿入孔の内側位置には、複数のカシメ部が形成されている構成であり、また、前記積層ロータコアの軸方向長さは、前記磁石の軸方向磁石長さより長く構成されている構成である。   The rotor structure for a magnet-embedded motor according to the present invention is a rotor structure for a magnet-embedded motor in which a plurality of magnets are embedded in the periphery of a laminated rotor core formed by laminating a large number of rotor core plates in the axial direction. Is a ring-shaped plate having a plate width in the radial direction, a column portion extending along the radial direction at a predetermined interval on the outer periphery of the ring-shaped plate, and an outer end of each column portion provided along the outer periphery. And a plurality of magnet insertion holes that are partitioned by the pillars and extend along the axial direction on the inner side of the cylinder, and the magnet is inserted into the magnet insertion hole. Inserted at both ends of the magnet insertion hole is provided with a deformed portion in which a part of the cylindrical portion is deformed inward, and the magnet in the magnet insertion hole is moved from the inside of the magnet insertion hole to the outside by the deformed portion. Configuration to prevent exit And the deforming portion is formed by bending one or a plurality of the rotor core plates, and a shaft through hole is formed at an axial center position of the rotor core plate. The rotary shaft is inserted into the cylindrical portion, and the insertion hole corresponding portion formed in the cylindrical portion and corresponding to the magnet insertion hole has a cross-sectional arc shape, and the laminated rotor core A plurality of crimping portions are formed at positions inside the magnet insertion holes of the rotor core plate at both ends of the rotor, and the axial length of the laminated rotor core is greater than the axial magnet length of the magnets. It is the structure comprised long.

本発明による磁石埋め込み型モータ用ロータ構造は、以上のように構成されているため、次のような効果を得ることができる。
すなわち、多数のロータコア板を軸方向に積層してなる積層ロータコアの周縁に複数の磁石を埋設するようにした磁石埋め込み型モータ用ロータ構造において、前記ロータコア板は、半径方向の板幅を有する輪状板と、前記輪状板の外周に所定間隔で前記半径方向に沿って延設された柱部と、前記各柱部の外端に設けられ前記外周に沿って輪状をなす筒部と、前記筒部の内側で前記各柱部によって区画され前記軸方向に沿って延設された複数の磁石挿入孔とからなり、前記磁石挿入孔内には前記磁石が挿入され、前記磁石挿入孔の両端には、前記筒部の一部を内側へ変形させた変形部を備え、前記変形部により前記磁石挿入孔内の前記磁石が前記磁石挿入孔内から外部に抜け出ることを防止することにより、簡単な機械的構成でロータを得ることができる。また、積層のカシメは順送型プレス等によって形成でき、低コストである。また、従来のような接着剤の管理等も不必要で、ロボットによる大量生産が可能となる。
また、前記変形部は、前記ロータコア板を一枚又は複数枚を曲折させてなることにより、簡単で組立てができる。
また、前記ロータコア板の軸心位置には、軸貫通孔が形成され、前記軸貫通孔には回転軸が嵌入されていることにより、従来の端板等を必要とすることなく、回転軸の取付けができる。
また、前記筒部に形成され前記磁石挿入孔に対応する挿入孔対応部は、断面弧状形をなしていることにより、磁石を保持する変形部を作ることが容易となる。
また、前記積層ロータコアの両端の前記ロータコア板の前記磁石挿入孔の内側位置には、複数のカシメ部が形成されていることにより、積層ロータコアの固定が極めて容易である。
また、前記積層ロータコアの軸方向長さは、前記磁石の軸方向磁石長さより長く構成されていることにより、磁石を係止するための変形部の形成が極めて容易となる。 Since the rotor structure for a magnet-embedded motor according to the present invention is configured as described above, the following effects can be obtained.
That is, in the rotor structure for a magnet-embedded motor in which a plurality of magnets are embedded in the periphery of a laminated rotor core formed by laminating a large number of rotor core plates in the axial direction, the rotor core plate has a ring shape having a radial plate width. A plate portion, a column portion extending along the radial direction at a predetermined interval on the outer periphery of the ring-shaped plate, a cylindrical portion provided at an outer end of each column portion and forming a ring shape along the outer periphery, and the cylinder A plurality of magnet insertion holes that are partitioned by the respective pillars and extend along the axial direction, and the magnets are inserted into the magnet insertion holes at both ends of the magnet insertion holes. Is provided with a deformed portion in which a part of the cylindrical portion is deformed inward, and the deformed portion prevents the magnet in the magnet insertion hole from slipping out of the magnet insertion hole. Get the rotor with mechanical configuration Door can be. In addition, the laminating caulking can be formed by a progressive die press or the like, and the cost is low. Also, conventional adhesive management is unnecessary, and mass production by a robot becomes possible.
The deformable portion can be easily assembled by bending one or a plurality of the rotor core plates.
In addition, a shaft through hole is formed at the axial center position of the rotor core plate, and a rotation shaft is inserted into the shaft through hole, so that a conventional end plate or the like is not required, so that Can be installed.
Moreover, the insertion hole corresponding part formed in the said cylinder part and corresponding to the said magnet insertion hole has comprised the cross-section arc shape, and it becomes easy to make the deformation | transformation part which hold | maintains a magnet.
In addition, since a plurality of crimping portions are formed at positions inside the magnet insertion holes of the rotor core plate at both ends of the laminated rotor core, it is very easy to fix the laminated rotor core.
In addition, since the axial length of the laminated rotor core is configured to be longer than the axial magnet length of the magnet, it is extremely easy to form a deformed portion for locking the magnet.

本発明による磁石埋め込み型モータ用ロータ構造の磁石を埋め込む前の状態を示す斜視図である。It is a perspective view which shows the state before embedding the magnet of the rotor structure for magnet embedded motors by this invention. 図１の積層ロータコアに磁石を内設した状態を示す拡大斜視図である。It is an expansion perspective view which shows the state which installed the magnet in the lamination | stacking rotor core of FIG. 図２の磁石を示す斜視図である。It is a perspective view which shows the magnet of FIG. 従来の磁石埋め込み型モータ用ロータ構造を示す分解斜視図である。It is a disassembled perspective view which shows the rotor structure for conventional magnet embedded motors. 図４の積層ロータコアを示す平面図である。It is a top view which shows the lamination | stacking rotor core of FIG.

本発明は、積層ロータコアの両端に変形部を形成させることにより、埋め込んだ磁石の抜け止めを行うようにした磁石埋め込み型モータ用ロータ構造を提供することを目的とする。   SUMMARY OF THE INVENTION An object of the present invention is to provide a rotor structure for a magnet-embedded motor that prevents a buried magnet from coming off by forming deformed portions at both ends of a laminated rotor core.

以下、図面と共に本発明による磁石埋め込み型モータ用ロータ構造の好適な実施の形態について説明する。
尚、従来例と同一又は同等部分については、同一符号を用いて説明する。
図１は、磁石８を埋め込む前の積層ロータコア１を示す斜視図であり、この積層ロータコア１は、多数のロータコア板２が転積を伴って軸方向Ａに沿い所定の軸方向長さＣとなるように積層されている。 A preferred embodiment of a rotor structure for a magnet-embedded motor according to the present invention will be described below with reference to the drawings.
Note that the same or equivalent parts as in the conventional example will be described using the same reference numerals.
FIG. 1 is a perspective view showing a laminated rotor core 1 before embedding a magnet 8, and this laminated rotor core 1 has a predetermined axial length C along an axial direction A along with a number of rotor core plates 2 being rolled. It is laminated so that.

前記積層ロータコア１を構成するための前記各ロータコア板２は、半径方向Ｂａに沿う板幅Ｂを有する輪状板２０と、前記輪状板２０の外周に所定間隔で半径方向に沿って延設された複数の柱部２１と、前記各柱部２１の外端に設けられ前記外周に沿って輪状をなす筒部２２と、前記筒部２２の内側で前記各柱部２１によって区画され前記軸方向Ａに沿って延設された複数の磁石挿入孔３とからなる。   Each of the rotor core plates 2 for constituting the laminated rotor core 1 is extended along the radial direction at a predetermined interval on the outer periphery of the annular plate 20 having a plate width B along the radial direction Ba. A plurality of column portions 21, a cylindrical portion 22 provided at an outer end of each column portion 21 and forming a ring shape along the outer periphery, and the axial direction A partitioned by the respective column portions 21 inside the cylinder portion 22. And a plurality of magnet insertion holes 3 extending along the axis.

前記磁石挿入孔３内には、磁石８が挿入され、この磁石挿入孔３の両端には、前記筒部２２の一部を図示しない治具によって内側に曲折させて変形させた変形部２３が形成されている。
従って、前記磁石挿入孔３内に挿入された磁石８の両端８ａ，８ｂが前記変形部２３と係合することにより、磁石挿入孔３から前記磁石８が抜け出ることを防止するように構成されている。
尚、前記積層ロータコア１の軸心に形成された軸貫通孔７には、図４で示される回転軸６が嵌入される。 A magnet 8 is inserted into the magnet insertion hole 3, and deformed portions 23 formed by bending a part of the cylindrical portion 22 inward with a jig (not shown) are deformed at both ends of the magnet insertion hole 3. Is formed.
Accordingly, the magnet 8 inserted into the magnet insertion hole 3 is configured to prevent the magnet 8 from coming out of the magnet insertion hole 3 by engaging the deformed portion 23 with both ends 8a and 8b of the magnet 8. Yes.
A rotating shaft 6 shown in FIG. 4 is fitted into the shaft through hole 7 formed in the axis of the laminated rotor core 1.

前記変形部２３は、前記ロータコア板２を一枚のみ内側へくの字形に曲折させて形成させることもできるが、その変形部２３の強度を強化するために複数枚のロータコア板２を曲折させて形成させることもできる。   The deforming portion 23 may be formed by bending only one rotor core plate 2 in an inwardly-shaped shape, but in order to strengthen the strength of the deforming portion 23, a plurality of rotor core plates 2 may be bent. It can also be formed.

前記筒部２２に形成されると共に前記磁石挿入孔３に対応する挿入孔対応部２４は、横断面でみて弧状形をなしており、かつ、前記磁石８の外形状に沿って形成されている。   An insertion hole corresponding portion 24 formed in the cylindrical portion 22 and corresponding to the magnet insertion hole 3 has an arc shape when viewed in cross section and is formed along the outer shape of the magnet 8. .

前記積層ロータコア１の両端の前記ロータコア板２の前記磁石挿入孔３の内側位置には、複数のカシメ部３０（通称、ダボカシメ、又は、スポット溶接等）が形成されることにより、各ロータコア板２が互いに一体状に結合される。
尚、前記積層ロータコア１の軸方向長さＣは、前記磁石８の軸方向磁石長さＤよりも長く形成され、この積層ロータコア１の両端に前記変形部を容易に形成することができるように構成されている。
従って、各磁石挿入孔３内の各磁石８は、従来のような接着剤を用いることなく、前記変形部２３のみで保持されるため、従来の各端板１２，１３等も不要となり、部品点数等も簡略化される。 A plurality of crimping portions 30 (commonly referred to as dowel crimping, spot welding, or the like) are formed at positions inside the magnet insertion holes 3 of the rotor core plate 2 at both ends of the laminated rotor core 1. Are joined together.
The axial length C of the laminated rotor core 1 is formed longer than the axial magnet length D of the magnet 8 so that the deformed portions can be easily formed at both ends of the laminated rotor core 1. It is configured.
Accordingly, each magnet 8 in each magnet insertion hole 3 is held only by the deformed portion 23 without using an adhesive as in the prior art, so that the conventional end plates 12, 13 and the like are not required. The score and the like are also simplified.

本発明による磁石埋め込み型モータ用ロータ構造は、積層ロータコアの周縁に形成された各磁石挿入孔内の磁石を簡単な構成の変形部のみで保持・固定することができ、磁石埋め込み型モータ用ロータ構造を得ることができる。   The rotor structure for a magnet-embedded motor according to the present invention can hold and fix the magnet in each magnet insertion hole formed on the peripheral edge of the laminated rotor core only by a deformed portion having a simple configuration. A structure can be obtained.

１ 積層ロータコア
２ ロータコア板
３ 磁石挿入孔
Ａ 軸方向
Ｂ 板幅
Ｂａ 半径方向
Ｃ 軸方向長さ
６ 回転軸
７ 軸貫通孔
２０ 輪状板
２１ 柱部
２２ 筒部
２３ 変形部
２４ 挿入孔対応部
３０ カシメ部 DESCRIPTION OF SYMBOLS 1 Stacked rotor core 2 Rotor core plate 3 Magnet insertion hole A Axial direction B Plate width Ba Radial direction C Axial length 6 Rotating shaft 7 Axis through-hole 20 Ring-shaped plate 21 Column portion 22 Tube portion 23 Deformation portion 24 Insertion hole corresponding portion 30 Caulking Part

Claims (6)

多数のロータコア板(2)を軸方向(A)に積層してなる積層ロータコア(1)の周縁に複数の磁石(8)を埋設するようにした磁石埋め込み型モータ用ロータ構造において、
前記ロータコア板(2)は、半径方向(Ba)の板幅(B)を有する輪状板(20)と、前記輪状板(20)の外周に所定間隔で前記半径方向(Ba)に沿って延設された柱部(21)と、前記各柱部(21)の外端に設けられ前記外周に沿って輪状をなす筒部(22)と、前記筒部(22)の内側で前記各柱部(21)によって区画され前記軸方向(A)に沿って延設された複数の磁石挿入孔(3)とからなり、前記磁石挿入孔(3)内には前記磁石(8)が挿入され、前記磁石挿入孔(3)の両端には、前記筒部(22)の一部を内側へ変形させた変形部(23)を備え、
前記変形部(23)により前記磁石挿入孔(3)内の前記磁石(8)が前記磁石挿入孔(3)内から外部に抜け出ることを防止することを特徴とする磁石埋め込み型モータ用ロータ構造。 In the rotor structure for a magnet-embedded motor in which a plurality of magnets (8) are embedded in the periphery of a laminated rotor core (1) formed by laminating a large number of rotor core plates (2) in the axial direction (A),
The rotor core plate (2) includes a ring-shaped plate (20) having a plate width (B) in the radial direction (Ba), and extends along the radial direction (Ba) at predetermined intervals on the outer periphery of the ring-shaped plate (20). A column portion (21) provided, a cylindrical portion (22) that is provided at the outer end of each column portion (21) and forms a ring shape along the outer periphery, and each column inside the cylinder portion (22) A plurality of magnet insertion holes (3) partitioned by a portion (21) and extending along the axial direction (A), and the magnet (8) is inserted into the magnet insertion hole (3). Further, at both ends of the magnet insertion hole (3), a deformed portion (23) obtained by deforming a part of the cylindrical portion (22) inward,
A rotor structure for a magnet-embedded motor, wherein the deformed portion (23) prevents the magnet (8) in the magnet insertion hole (3) from slipping out of the magnet insertion hole (3). . 前記変形部(23)は、前記ロータコア板(2)を一枚又は複数枚を曲折させてなることを特徴とする請求項１記載の磁石埋め込み型モータ用ロータ構造。   The rotor structure for a magnet-embedded motor according to claim 1, wherein the deforming portion (23) is formed by bending one or a plurality of the rotor core plates (2). 前記ロータコア板(2)の軸心位置には、軸貫通孔(7)が形成され、前記軸貫通孔(7)には回転軸(6)が嵌入されていることを特徴とする請求項１又は２記載の磁石埋め込み型モータ用ロータ構造。   The shaft through hole (7) is formed at the axial center position of the rotor core plate (2), and the rotating shaft (6) is fitted into the shaft through hole (7). Or a rotor structure for a magnet-embedded motor according to 2; 前記筒部(22)に形成され前記磁石挿入孔(3)に対応する挿入孔対応部(24)は、断面弧状形をなしていることを特徴とする請求項１ないし３の何れかに記載の磁石埋め込み型モータ用ロータ構造。   The insertion hole corresponding part (24) formed in the cylindrical part (22) and corresponding to the magnet insertion hole (3) has an arcuate cross section. Rotor structure for embedded magnet motors. 前記積層ロータコア(1)の両端の前記ロータコア板(2)の前記磁石挿入孔(3)の内側位置には、複数のカシメ部(30)が形成されていることを特徴とする請求項１ないし４の何れかに記載の磁石埋め込み型モータ用ロータ構造。   The plurality of crimping portions (30) are formed at positions inside the magnet insertion holes (3) of the rotor core plate (2) at both ends of the laminated rotor core (1). 5. The rotor structure for a magnet-embedded motor according to any one of 4 above. 前記積層ロータコア(1)の軸方向長さ(C)は、前記磁石(8)の軸方向磁石長さ(D)より長く構成されていることを特徴とする請求項１ないし５の何れかに記載の磁石埋め込み型モータ用ロータ構造。   The axial length (C) of the laminated rotor core (1) is longer than the axial magnet length (D) of the magnet (8). A rotor structure for an embedded magnet motor as described.
JP2011169769A 2011-08-03 2011-08-03 Rotor structure of magnet-embedded motor Pending JP2013034335A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2011169769A JP2013034335A (en) 2011-08-03 2011-08-03 Rotor structure of magnet-embedded motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011169769A JP2013034335A (en) 2011-08-03 2011-08-03 Rotor structure of magnet-embedded motor

Publications (1)

Publication Number Publication Date
JP2013034335A true JP2013034335A (en) 2013-02-14

Family

ID=47789745

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2011169769A Pending JP2013034335A (en) 2011-08-03 2011-08-03 Rotor structure of magnet-embedded motor

Country Status (1)

Country Link
JP (1) JP2013034335A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016134169A3 (en) * 2015-02-18 2016-09-22 Nidec Motor Corporation Electric motor
WO2018131402A1 (en) * 2017-01-11 2018-07-19 パナソニックＩｐマネジメント株式会社 Permanent magnet embedded rotor and electric motor equipped with same
WO2018163319A1 (en) * 2017-03-08 2018-09-13 三菱電機株式会社 Rotor and rotating electric machine provided with said rotor
CN111384802A (en) * 2018-12-27 2020-07-07 本田技研工业株式会社 Rotor of rotating electric machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004215379A (en) * 2002-12-27 2004-07-29 Koyo Seiko Co Ltd Rotor and motor
JP2007306726A (en) * 2006-05-12 2007-11-22 Mitsubishi Electric Corp Magnet-embedded rotator and molding die
JP2008211948A (en) * 2007-02-28 2008-09-11 Aisin Seiki Co Ltd Method of manufacturing laminated rotor iron core

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004215379A (en) * 2002-12-27 2004-07-29 Koyo Seiko Co Ltd Rotor and motor
JP2007306726A (en) * 2006-05-12 2007-11-22 Mitsubishi Electric Corp Magnet-embedded rotator and molding die
JP2008211948A (en) * 2007-02-28 2008-09-11 Aisin Seiki Co Ltd Method of manufacturing laminated rotor iron core

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016134169A3 (en) * 2015-02-18 2016-09-22 Nidec Motor Corporation Electric motor
US9752652B2 (en) 2015-02-18 2017-09-05 Nidec Motor Corporation Traction motor assembly with gear-interconnected wheel and output shaft
US10047826B2 (en) 2015-02-18 2018-08-14 Nidec Motor Corporation Motor having ring for axially retaining stator
US10100902B2 (en) 2015-02-18 2018-10-16 Nidec Motor Corporation Motor with encoder flywheel
US10145450B2 (en) 2015-02-18 2018-12-04 Nidec Motor Corporation Staked rotor core for retaining magnets
US10277090B2 (en) 2015-02-18 2019-04-30 Nidec Motor Corporation Electric motor having low axial profile
WO2018131402A1 (en) * 2017-01-11 2018-07-19 パナソニックＩｐマネジメント株式会社 Permanent magnet embedded rotor and electric motor equipped with same
CN110168862A (en) * 2017-01-11 2019-08-23 松下知识产权经营株式会社 Permanent magnet embedded rotor and the motor for having the rotor
WO2018163319A1 (en) * 2017-03-08 2018-09-13 三菱電機株式会社 Rotor and rotating electric machine provided with said rotor
CN111384802A (en) * 2018-12-27 2020-07-07 本田技研工业株式会社 Rotor of rotating electric machine

Similar Documents

Publication Publication Date Title
JP4666500B2 (en) Rotor of permanent magnet embedded motor
US8729760B2 (en) Rotor of electric motor having structure for attaching magnet securely to outer circumferential surface of rotor core and manufacturing method thereof
US9154005B2 (en) Rotor core for rotating electrical machine, and manufacturing method thereof
JP5324673B2 (en) Motor rotor having split core and method of manufacturing the same
US20150028710A1 (en) Rotor for rotating electric machine, rotating electric machine, and method for manufacturing rotor for rotating electric machine
US20130207507A1 (en) Rotor assembly for motor and manufacturing method thereof
JP2011010389A (en) Rotator core
JP5859112B2 (en) Rotating electric machine armature and method of manufacturing rotating electric machine armature
KR20060133373A (en) Structure for fixing magnet of spm type motor
JP2015163006A (en) Rotary electric machine and method for manufacturing the same
JP2010207090A (en) Rotor for permanent magnet embedded motors
JP2013034335A (en) Rotor structure of magnet-embedded motor
JP5638705B2 (en) Electric motor laminated core
WO2011125183A1 (en) Rotor and manufacturing method for same
JP6232641B2 (en) Manufacturing method of stator core
JP2004064997A (en) Method of manufacturing motor stator
JP6447206B2 (en) Rotor for rotating electrical machine and method for manufacturing the same
JP2012130205A (en) Core of rotary electric machine and manufacturing method of the same
JP6482846B2 (en) Electric motor
WO2012105262A1 (en) Motor stator and motor
JP2011239615A (en) Rotor for rotary electric machine
JP2011172335A (en) Electric motor
JP2013135598A (en) Rotor for rotating electric machine
JP2013102575A (en) Rotary electric machine
JPWO2020170782A1 (en) Stator core, rotor core and motor

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20140328

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20150120

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20150121

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20150313

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20150908