JP5959242B2

JP5959242B2 - Rotor laminated core

Info

Publication number: JP5959242B2
Application number: JP2012056556A
Authority: JP
Inventors: 一之山本; 鵜飼　義一; 義一鵜飼; 隆之鬼橋
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2012-03-14
Filing date: 2012-03-14
Publication date: 2016-08-02
Anticipated expiration: 2032-03-14
Also published as: JP2013192358A

Description

この発明は、モータに用いられる回転子の積層鉄心に関し、特に複数の永久磁石を回転子の内部に埋め込んで固定する、永久磁石埋め込み型回転子の積層鉄心の構造に関するものである。 The present invention relates to a laminated core of a rotor used in a motor, and more particularly to a structure of a laminated core of a permanent magnet embedded rotor in which a plurality of permanent magnets are embedded and fixed inside the rotor.

従来、一般的な磁石埋め込み型回転子は、電磁鋼板が積層された円筒状の回転子鉄心の外周部付近に磁石を埋め込むための磁石挿入穴が設けられており、この穴に軸方向から磁石を挿入することで組み立てられる。
回転子の積層鉄心の中央には回転軸を挿入して固定する回転軸穴が設けられている。 Conventionally, a general magnet-embedded rotor has a magnet insertion hole for embedding a magnet in the vicinity of the outer peripheral portion of a cylindrical rotor core on which electromagnetic steel plates are laminated. It is assembled by inserting.
A rotation shaft hole for inserting and fixing the rotation shaft is provided at the center of the laminated core of the rotor.

磁石を挿入するためには、磁石挿入穴は磁石よりも大きい必要がある。そのため挿入した後の磁石挿入穴の壁面と磁石の間には隙間が存在する。個別の磁石寸法のばらつきは大きく、一般にこの隙間は大きなものとなる。
この隙間によって、回転子の回転中に磁石挿入穴の中で動き、振動や騒音の原因となったり、磁気経路中の隙間のばらつきで磁路が変化し、トルクリップルやコギングを引き起こす問題がある。
また、重量バランスがくずれ、振動の要因にもなる。
反対に隙間を小さくすると、磁石を挿入する際に磁石表面が傷ついて防錆のためのメッキが剥れたり、また磁石が割れる問題もある。
磁石の寸法精度を改善するには磁石を研磨する必要があり、この工程を追加することは大幅なコストアップにつながる。
このような問題について、特許文献１に示す発明では、磁石の外周側の鉄心の一部を、磁石を押さえるように半径方向内側に変形させて、磁石を磁石挿入穴内に固定する方法が提案されている。 In order to insert a magnet, the magnet insertion hole needs to be larger than the magnet. Therefore, there is a gap between the wall surface of the magnet insertion hole after insertion and the magnet. Variations in individual magnet dimensions are large, and this gap is generally large.
Due to this gap, the rotor moves in the magnet insertion hole during rotation, causing vibration and noise, and the magnetic path changes due to gaps in the magnetic path, causing torque ripple and cogging. .
In addition, the weight balance is lost, causing vibration.
On the other hand, if the gap is made small, there is a problem that the surface of the magnet is damaged when the magnet is inserted, and the plating for rust prevention is peeled off or the magnet is broken.
In order to improve the dimensional accuracy of the magnet, it is necessary to polish the magnet, and adding this step leads to a significant cost increase.
With respect to such a problem, the invention shown in Patent Document 1 proposes a method in which a part of the iron core on the outer peripheral side of the magnet is deformed radially inward so as to hold the magnet and the magnet is fixed in the magnet insertion hole. ing.

特開平０９−２００９８２号公報Japanese Patent Application Laid-Open No. 09-200982

しかしながら、特許文献１に係る発明では、積層を構成する電磁鋼板のスプリングバックにより確実に磁石を固定できないという問題がある。
また、回転子の回転中においては、遠心力により、磁石を押さえた鉄心部材が磁石と離れる可能性がある。
また、鉄心部材を磁石に押圧するために、磁石の数だけ締結リベットが別途必要になり、部品点数が増えるという課題があった。 However, the invention according to Patent Document 1 has a problem that the magnet cannot be reliably fixed by the springback of the electromagnetic steel plates constituting the stack.
Further, during rotation of the rotor, the iron core member holding the magnet may be separated from the magnet due to centrifugal force.
Further, in order to press the iron core member against the magnets, fastening rivets are separately required as many as the number of magnets, resulting in an increase in the number of parts.

この発明は、上記のような課題を解決するためになされたものであり、磁石と磁石挿入穴の隙間を必要最低限確保するだけで、磁石を確実に回転子の磁石挿入穴内に固定できる回転子の積層鉄心を得ることを目的とする。 The present invention has been made in order to solve the above-described problems, and the rotation that can securely fix the magnet in the magnet insertion hole of the rotor only by ensuring the minimum gap between the magnet and the magnet insertion hole. The purpose is to obtain a child core.

この発明に係る回転子の積層鉄心は、
周方向に等間隔に埋設された磁石を有する回転子の積層鉄心において、
前記積層鉄心の１つの積層を構成する第１鉄心部材であって、
回転軸が貫通する回転軸挿入口と、
前記磁石が貫通する、複数の磁石挿入口と、
前記第１鉄心部材の本体から分離された、前記回転軸が押圧する回転軸当接部及び、前記磁石の前記積層鉄心の径方向の内側面を、前記積層鉄心の径方向の外側に向かって押圧する第１磁石当接部を有する第１可動鉄心片を備え、
前記第１可動鉄心片は、３つに分離した部材であって、
一端に前記回転軸当接部を、他端に楔形状部を有する回転軸当接部材と、
それぞれ前記第１磁石当接部を有する対称な外形形状をした２枚の第１磁石押圧部材とを有し、
前記回転軸当接部材の前記楔形状部の２辺が、２枚の前記第１磁石押圧部材の第１辺にそれぞれ接しているものである。
また、この発明に係る回転子の積層鉄心は、
周方向に等間隔に埋設された磁石を有する回転子の積層鉄心において、
前記積層鉄心の１つの積層を構成する第１鉄心部材であって、
回転軸が貫通する回転軸挿入口と、
前記磁石が貫通する、複数の磁石挿入口と、
前記第１鉄心部材の本体から分離された、前記回転軸が押圧する回転軸当接部及び、前記磁石の前記積層鉄心の径方向の内側面を、前記積層鉄心の径方向の外側に向かって押圧する第１磁石当接部を有する第１可動鉄心片を備え、
前記積層鉄心は、前記積層鉄心の１つの積層を構成する第２鉄心部材であって、
隣接する前記第１鉄心部材の前記第１可動鉄心片に重ねて接合され、前記第２鉄心部材の本体から外周部が分離され、前記磁石の前記積層鉄心の径方向の前記内側面を、前記積層鉄心の径方向の外側に向かって押圧する、第２磁石当接部を有する第２可動鉄心片を備えたものである。 The laminated core of the rotor according to the present invention is
In the laminated iron core of the rotor having magnets embedded at equal intervals in the circumferential direction,
A first iron core member constituting one of the laminated iron cores,
A rotation shaft insertion port through which the rotation shaft penetrates;
A plurality of magnet insertion openings through which the magnet passes;
It said first separated from the body of the core member, before Symbol rotation axis rotary shaft presses abutment及beauty, the inner surface of the radial direction of the laminated core before Symbol magnets, radially outside of the laminated core A first movable iron core piece having a first magnet contact portion that presses toward the
The first movable iron core piece is a member separated into three parts,
A rotating shaft abutting member having the rotating shaft abutting portion at one end and a wedge-shaped portion at the other end;
Two first magnet pressing members each having a symmetrical outer shape having the first magnet contact portion,
Two sides of the wedge-shaped portion of the rotating shaft contact member are in contact with the first sides of the two first magnet pressing members.
The laminated core of the rotor according to the present invention is
In the laminated iron core of the rotor having magnets embedded at equal intervals in the circumferential direction,
A first iron core member constituting one of the laminated iron cores,
A rotation shaft insertion port through which the rotation shaft penetrates;
A plurality of magnet insertion openings through which the magnet passes;
It said first separated from the body of the core member, before Symbol rotation axis rotary shaft presses abutment及beauty, the inner surface of the radial direction of the laminated core before Symbol magnets, radially outside of the laminated core A first movable iron core piece having a first magnet contact portion that presses toward the
The laminated iron core is a second iron core member constituting one laminated of the laminated iron cores,
Is joined superimposed on the first movable core pieces adjacent the first core member, the outer peripheral portion from the body of the second core member are separated, the inner surface of the radial direction of the laminated core before Symbol magnets The second movable core piece having a second magnet contact portion that presses toward the outer side in the radial direction of the laminated core is provided.

この発明に係る回転子の積層鉄心は、
上記のように構成されているものなので、可動鉄心片を有する鉄心部材を回転子の積層に組み込むことにより、既存の電磁鋼板や回転軸以外に新たな部材を必要とすることなく、また磁石の挿入時に磁石を傷つけることなく、回転軸を積層鉄心に組み立てるだけで磁石を確実に磁石挿入穴の外周面に対して押さえて固定することができる。 The laminated core of the rotor according to the present invention is
Since it is configured as described above, by incorporating an iron core member having a movable iron core piece into the lamination of the rotor, a new member other than the existing electromagnetic steel plate and rotating shaft is not required, and the magnet Without damaging the magnet during insertion, the magnet can be reliably pressed against the outer peripheral surface of the magnet insertion hole and fixed simply by assembling the rotating shaft into the laminated core.

本発明の実施の形態１に係る積層鉄心の斜視図及び積層鉄心内に挿入される磁石の構成を示す斜視図である。It is a perspective view of the laminated iron core which concerns on Embodiment 1 of this invention, and a perspective view which shows the structure of the magnet inserted in a laminated iron core. 本発明の実施の形態１に係る積層鉄心の断面図及び、各積層を構成する鉄心部材の平面図である。It is sectional drawing of the laminated iron core which concerns on Embodiment 1 of this invention, and the top view of the iron core member which comprises each lamination. 本発明の実施の形態１に係る積層鉄心に回転軸を挿入する過程を示す図である。It is a figure which shows the process in which a rotating shaft is inserted in the laminated iron core which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る積層鉄心に回転軸を圧入する前後の可動鉄心片の状態を示す図である。It is a figure which shows the state of the movable core piece before and behind pressing-in a rotating shaft to the laminated iron core which concerns on Embodiment 1 of this invention. 本発明の実施の形態２に係る積層鉄心の断面図及び、各積層を構成する鉄心部材の平面図である。It is sectional drawing of the laminated iron core which concerns on Embodiment 2 of this invention, and the top view of the iron core member which comprises each lamination. 本発明の実施の形態２に係る積層鉄心の可動鉄心構造体の斜視図である。It is a perspective view of the movable iron core structure of a laminated iron core concerning Embodiment 2 of the present invention. 本発明の実施の形態３に係る積層鉄心の断面図及び、各積層を構成する鉄心部材の平面図である。It is sectional drawing of the laminated core which concerns on Embodiment 3 of this invention, and the top view of the iron core member which comprises each lamination. 本発明の実施の形態３に係る当接可動鉄心片及び可動鉄心片の構成と動作を示す図である。It is a figure which shows the structure and operation | movement of a contact movable iron core piece and movable iron core piece which concern on Embodiment 3 of this invention. 本発明の実施の形態３に係る積層鉄心に発生する磁界経路を示す図である。It is a figure which shows the magnetic field path | route which generate | occur | produces in the laminated iron core which concerns on Embodiment 3 of this invention. 本発明の実施の形態４に係る積層鉄心の可動鉄心片の周辺の平面図である。It is a top view of the periphery of the movable core piece of the laminated core which concerns on Embodiment 4 of this invention. 本発明の実施の形態５に係る積層鉄心の可動鉄心片の周辺の平面図である。It is a top view of the periphery of the movable core piece of the laminated core which concerns on Embodiment 5 of this invention.

実施の形態１．
以下、本発明の実施の形態１に係る回転子の積層鉄心を図を用いて説明する。
図１（ａ）は、本発明の実施の形態１に係る回転子の積層鉄心１００の斜視図である。
図１（ｂ）は、積層鉄心１００の内部に積層方向に挿入される磁石１の構成を示す斜視図である。
図に示すように積層鉄心１００の外周面近傍には、磁石１を挿入する穴である磁石挿入穴１０が、等間隔に、積層鉄心１００の積層方向に形成されている。
また、積層鉄心１００の中心には、積層方向に、回転軸を圧入する回転軸穴１１を設けている。 Embodiment 1 FIG.
Hereinafter, the laminated core of the rotor according to the first embodiment of the present invention will be described with reference to the drawings.
Fig.1 (a) is a perspective view of the laminated core 100 of the rotor which concerns on Embodiment 1 of this invention.
FIG. 1B is a perspective view showing the configuration of the magnet 1 inserted into the laminated core 100 in the laminating direction.
As shown in the figure, in the vicinity of the outer peripheral surface of the laminated core 100, magnet insertion holes 10 that are holes for inserting the magnets 1 are formed at equal intervals in the lamination direction of the laminated core 100.
A rotation shaft hole 11 for press-fitting the rotation shaft is provided in the center of the laminated core 100 in the stacking direction.

図２（ａ）は、積層鉄心１００の横断面図である。
図２（ｂ）は、積層鉄心１００を構成する鉄心部材２ａの平面図である。
図２（ｃ）は、積層鉄心１００を構成する鉄心部材２ｂ（特許請求の範囲の第１鉄心部材に相当）の平面図である。
図に示すように、積層鉄心１００は、各積層を構成する主たる鉄心部材である鉄心部材２ａの間に等間隔に鉄心部材２ｂを配置して構成されている。 FIG. 2A is a cross-sectional view of the laminated core 100.
FIG. 2B is a plan view of the iron core member 2 a constituting the laminated iron core 100.
FIG. 2C is a plan view of an iron core member 2 b (corresponding to the first iron core member in the claims) constituting the laminated iron core 100.
As shown in the figure, the laminated core 100 is configured by arranging the iron core members 2b at equal intervals between the iron core members 2a that are main iron core members constituting each laminated layer.

鉄心部材２ａは、中心部に回転子の回転軸を挿入する、回転軸挿入口２５ａを設けている。
また、鉄心部材２ａの外周に沿って、６コの磁石挿入口２６が、等間隔に配置されている。
隣接する磁石の中間から、積層鉄心１００の径方向内側に離れた所定の場所には、積層鉄心１００を構成する各積層間を嵌合する、かしめ部４を設けている。
かしめ部４は、鋼板の一部を丸状に突起を出すように半抜きし、お互いの凸部と凹部を嵌め合わせることで、積層間の鋼板を結合させている。
かしめ部４は、丸状でなくとも良く、断面がＶ字状になるように半抜きされた突起を結合させてもよい。 The core member 2a is provided with a rotation shaft insertion port 25a into which the rotation shaft of the rotor is inserted at the center.
Further, six magnet insertion openings 26 are arranged at equal intervals along the outer periphery of the iron core member 2a.
A caulking portion 4 is provided at a predetermined location away from the middle of the adjacent magnets inward in the radial direction of the laminated core 100 to fit between the laminated layers constituting the laminated core 100.
The caulking portion 4 is half-cut out so as to project a part of the steel plate in a round shape, and the steel plates between the laminates are combined by fitting the convex portions and the concave portions to each other.
The caulking portion 4 does not have to be round, and may be combined with a half-cut protrusion so that the cross section is V-shaped.

鉄心部材２ｂは、鉄心部材２ａと同様に、その中心部分には、回転軸挿入口２５ｂを有している。
鉄心部材２ａ、２ｂの磁石挿入口２６は、各鉄心部材が積層されることにより、磁石挿入穴１０を形成する。
図２（ｄ）は、鉄心部材２ｂの可動鉄心片２０ｂ（特許請求の範囲の第１可動鉄心片に相当）の平面図である。
鉄心部材２ｂは、鉄心部材２ｂの本体から分離した、可動鉄心片２０ｂを有している。
可動鉄心片２０ｂは、積層鉄心１００の中で、積層鉄心１００の径方向外側に移動可能な鉄心部材である。
なお、本明細書において「径方向」「周方向」というときは、特に表示しない限り積層鉄心１００の径方向、周方向をいうものとする。
可動鉄心片２０ｂは、鉄心部材２ｂを磁性鋼板からプレス加工する際に、同時に打ち抜き形成され、プッシュバックなどで鉄心部材２ｂと一体成型されていて、積層鉄心１００の磁石挿入穴１０の中の磁石１を径方向外側に押さえることのできる形状をしている。
また、可動鉄心片２０ｂと鉄心部材２ｂ本体との分割面には適当な隙間を有すると同時に、鉄心部材２ｂから脱落しない程度に保持されている。
可動鉄心片２０ｂは、積層鉄心１００の積層を完成した後で移動させるので、積層間をかしめるかしめ部４は、これには設けていない。 Similarly to the iron core member 2a, the iron core member 2b has a rotation shaft insertion opening 25b at the center thereof.
The magnet insertion holes 26 of the iron core members 2a and 2b form the magnet insertion holes 10 by stacking the iron core members.
FIG.2 (d) is a top view of the movable core piece 20b (equivalent to the 1st movable core piece of a claim) of the iron core member 2b.
The iron core member 2b has a movable iron core piece 20b separated from the main body of the iron core member 2b.
The movable iron core piece 20 b is an iron core member that is movable in the radially outer side of the laminated core 100 in the laminated core 100.
In this specification, “radial direction” and “circumferential direction” refer to the radial direction and the circumferential direction of the laminated core 100 unless otherwise indicated.
When the iron core member 2b is pressed from a magnetic steel plate, the movable iron core piece 20b is formed by punching at the same time and is integrally formed with the iron core member 2b by pushback or the like, and the magnet in the magnet insertion hole 10 of the laminated iron core 100 is formed. It has a shape that can hold 1 outward in the radial direction.
In addition, the dividing surface between the movable core piece 20b and the core member 2b main body has an appropriate gap, and at the same time, is held so as not to drop off from the core member 2b.
Since the movable iron core piece 20b is moved after the lamination of the laminated iron cores 100 is completed, the caulking portion 4 for caulking between the laminations is not provided.

可動鉄心片２０ｂは、積層鉄心１００の回転軸に当接する回転軸当接部２１ｂと、磁石１に当接して、磁石１の径方向内側の面から、径方向外側へ押圧する磁石当接部２３ｂと、回転軸当接部２１ｂと磁石当接部２３ｂの中間にあって、回転軸当接部２１ｂと磁石当接部２３ｂとの間の距離が縮小可能となるように、内側を中空のスリット２４ｂとして打ち抜いた縁部分である変形部２２ｂとで構成される。 The movable core piece 20b includes a rotating shaft abutting portion 21b that abuts on the rotating shaft of the laminated core 100, and a magnet abutting portion that abuts against the magnet 1 and presses radially outward from the radially inner surface of the magnet 1. 23b, and between the rotary shaft abutting portion 21b and the magnet abutting portion 23b, the inside is a hollow slit so that the distance between the rotating shaft abutting portion 21b and the magnet abutting portion 23b can be reduced. It is comprised by the deformation | transformation part 22b which is the edge part punched out as 24b.

図３は、積層鉄心１００に回転軸５を挿入する工程を示す断面図である。
図３に示すように積層鉄心１００の回転軸穴１１の一端（図では左側）から回転軸５を圧入する。
回転軸５の、積層鉄心１００と嵌合する部分である嵌合部５１の端部Ｔは滑らかな円弧を描くように面取りがされている。
回転軸５を回転軸穴１１に挿入すると、嵌合部５１の端部Ｔが、次々と回転軸穴１１の内壁面から突出している可動鉄心片２０ｂの回転軸当接部２１ｂに衝突する。 FIG. 3 is a cross-sectional view showing a process of inserting the rotating shaft 5 into the laminated core 100.
As shown in FIG. 3, the rotary shaft 5 is press-fitted from one end (left side in the figure) of the rotary shaft hole 11 of the laminated core 100.
An end portion T of the fitting portion 51 that is a portion that fits the laminated core 100 of the rotating shaft 5 is chamfered so as to draw a smooth arc.
When the rotating shaft 5 is inserted into the rotating shaft hole 11, the end T of the fitting portion 51 successively collides with the rotating shaft abutting portion 21 b of the movable core piece 20 b protruding from the inner wall surface of the rotating shaft hole 11.

図４（ａ）は、回転軸５を挿入する前の可動鉄心片２０ｂの周囲の状態を示す図である。
可動鉄心片２０ｂは、鉄心部材２ｂの本体と分離してはいるが、分割面を接する状態で鉄心部材２ｂ内に保持されている。
図に示すように、可動鉄心片２０ｂの一端部である回転軸当接部２１ｂは、回転軸挿入口２５ｂの内周面から内側に突出している。
元々、鉄心部材２ｂをプレス成形する際に、このような状態で成形している。 FIG. 4A is a diagram illustrating a state around the movable core piece 20b before the rotation shaft 5 is inserted.
Although the movable iron core piece 20b is separated from the main body of the iron core member 2b, the movable iron core piece 20b is held in the iron core member 2b in a state of contacting the dividing surface.
As shown in the drawing, the rotating shaft contact portion 21b, which is one end portion of the movable core piece 20b, protrudes inward from the inner peripheral surface of the rotating shaft insertion opening 25b.
Originally, when the iron core member 2b is press-molded, it is molded in such a state.

可動鉄心片２０ｂの径方向外側の端部は、磁石１を外側に押圧する磁石当接部２３ｂとなっている。
磁石当接部２３ｂの横幅は、概ね磁石１の幅と同じであり、幅広に磁石１を押さえる事ができ、確実な磁石１の固定を可能としている。 The radially outer end of the movable core piece 20b is a magnet contact portion 23b that presses the magnet 1 outward.
The lateral width of the magnet abutting portion 23b is substantially the same as the width of the magnet 1, and the magnet 1 can be pressed in a wide range so that the magnet 1 can be securely fixed.

図４（ｂ）は、磁石挿入口２６に磁石１がない状態で、回転軸５を回転軸挿入口２５ｂ（回転軸穴１１）に挿入した状態を想定した図である。
回転軸５の嵌合部５１の端部Ｔが、回転軸当接部２１ｂに突き当たると、可動鉄心片２０ｂは、回転軸当接部２１ｂの内側先端部が回転軸挿入口２５ｂの内周面と同じ位置となるまで、径方向外側へ移動する。
この時、磁石当接部２３ｂの先端が、磁石挿入口２６の内側に、可動鉄心片２０ｂの移動分だけ僅かに突出すると同時に鉄心部材２ｂの本体と可動鉄心片２０ｂの間に、可動鉄心片２０ｂの移動分だけ僅かな隙間Ｓが生じる。
図４（ｃ）は、磁石挿入口２６に磁石１を挿入した状態で、回転軸５を回転軸穴１１へ挿入した状態を示す図である。
磁石当接部２３ｂが、磁石１の径方向内側面を径方向外側に押圧することにより、磁石１を磁石挿入口２６の中で固定できる。 FIG. 4B is a diagram assuming a state in which the rotating shaft 5 is inserted into the rotating shaft insertion port 25b (the rotating shaft hole 11) without the magnet 1 in the magnet insertion port 26. FIG.
When the end portion T of the fitting portion 51 of the rotating shaft 5 abuts against the rotating shaft abutting portion 21b, the movable iron core piece 20b has the inner tip of the rotating shaft abutting portion 21b at the inner peripheral surface of the rotating shaft insertion port 25b. Move radially outward until it reaches the same position.
At this time, the tip of the magnet contact portion 23b slightly protrudes inside the magnet insertion opening 26 by the amount of movement of the movable core piece 20b, and at the same time, between the main body of the core member 2b and the movable core piece 20b. A slight gap S is generated by the amount of movement of 20b.
FIG. 4C is a view showing a state in which the rotating shaft 5 is inserted into the rotating shaft hole 11 with the magnet 1 being inserted into the magnet insertion opening 26.
The magnet contact portion 23b presses the radially inner side surface of the magnet 1 outward in the radial direction, whereby the magnet 1 can be fixed in the magnet insertion opening 26.

ところで磁石１は、その製造工程の性質上、個々の厚さにばらつきを有するものである。
例えば、ある磁石１の厚みが規定のサイズより大きい場合、これを可動鉄心片２０ｂで押さえると、磁石１の表面に局所的に過度な力がかかる場合がある。
回転軸５による押圧力が、そのまま磁石１に作用すると、磁石１の損傷、割れが発生する場合がある。
そのため、可動鉄心片２０ｂには、過度な力を吸収する変形部２２ｂを設けている。 By the way, the magnet 1 has dispersion | variation in each thickness on the property of the manufacturing process.
For example, when the thickness of a certain magnet 1 is larger than a prescribed size, excessive force may be locally applied to the surface of the magnet 1 when it is pressed by the movable iron core piece 20b.
If the pressing force by the rotating shaft 5 acts on the magnet 1 as it is, the magnet 1 may be damaged or cracked.
Therefore, the movable iron core piece 20b is provided with a deforming portion 22b that absorbs excessive force.

変形部２２ｂは、磁石当接部２３ｂと回転軸当接部２１ｂの中間に、径方向に垂直な方向に設けたスリット２４ｂの外周縁である。この外周縁と可動鉄心片２０ｂの外周縁との間に残した薄肉部を変形部２２ｂとしている。
磁石の厚さが所定の厚さより厚い場合は、この変形部２２ｂが径方向外側に、可動鉄心片２０ｂの径方向の長さを減少させるように変形することにより、磁石１に過渡な力を及ぼさない構造としている。
なお、変形部２２ｂの通常の変形量は、変形部２２ｂがバネ性を発揮して撓る程度である。 The deforming portion 22b is an outer peripheral edge of a slit 24b provided in a direction perpendicular to the radial direction between the magnet contact portion 23b and the rotating shaft contact portion 21b. A thin portion left between the outer peripheral edge and the outer peripheral edge of the movable iron core piece 20b is defined as a deformed portion 22b.
When the thickness of the magnet is larger than the predetermined thickness, the deforming portion 22b is deformed outward in the radial direction so as to reduce the length of the movable core piece 20b in the radial direction, thereby applying a transient force to the magnet 1. The structure does not reach.
Note that the normal deformation amount of the deformable portion 22b is such that the deformable portion 22b bends while exhibiting spring properties.

なお、本実施の形態では、回転軸５の挿入によって可動鉄心片２０ｂを直接移動させたが、例えばロート条の治具を案内として先に挿入し、治具で可動鉄心片２０ｂを磁石１に押し付ける状態にしながら回転軸５を挿入しても良い。
また、本実施の形態では、圧入により回転軸５を固定する例を示したが、電磁鋼板側を温めて回転軸穴１１を大きくした後に回転軸５を挿入する焼き嵌めを用いて回転軸５を固定する場合も同様に磁石１を固定することができる。 In the present embodiment, the movable iron core piece 20b is directly moved by inserting the rotating shaft 5. However, for example, a funnel jig is first inserted as a guide, and the movable iron piece 20b is inserted into the magnet 1 with the jig. The rotating shaft 5 may be inserted while being pressed.
Moreover, although the example which fixes the rotating shaft 5 by press injection was shown in this Embodiment, the rotating shaft 5 is used using the shrink fit which inserts the rotating shaft 5 after heating the electromagnetic steel plate side and enlarging the rotating shaft hole 11. FIG. Similarly, the magnet 1 can be fixed in the case of fixing.

本実施の形態に係る回転子の積層鉄心１００によれば、可動鉄心片２０ｂを有する鉄心部材２ｂを回転子の積層に組み込むことにより、既存の電磁鋼板や回転軸５以外に新たな部材を必要とすることなく、また磁石１の挿入時に磁石１を傷つけることなく、回転軸５を積層鉄心１００に組み立てるだけで磁石１を確実に磁石挿入穴１０の外周面に対して押さえて固定することができる。 According to the laminated iron core 100 of the rotor according to the present embodiment, a new member is required in addition to the existing electromagnetic steel plate and the rotating shaft 5 by incorporating the iron core member 2b having the movable iron core piece 20b into the laminated rotor. And without damaging the magnet 1 when the magnet 1 is inserted, the magnet 1 can be securely pressed and fixed to the outer peripheral surface of the magnet insertion hole 10 only by assembling the rotating shaft 5 to the laminated core 100. it can.

また、本実施の形態では、可動鉄心片２０ｂを含む層を１枚ずつ、等間隔に、全体の層に分布して配置したが、可動鉄心片２０ｂを複数連続して積層した層が配置される構成としても同様の効果を得られる。 Further, in this embodiment, the layers including the movable core pieces 20b are arranged one by one at regular intervals and distributed over the entire layer, but a layer in which a plurality of movable core pieces 20b are continuously stacked is arranged. The same effect can be obtained with this configuration.

実施の形態２．
以下、本発明の実施の形態２に係る回転子の積層鉄心を図を用いて実施の形態１と異なる部分を中心に説明する。
図５（ａ）は、積層鉄心２００の横断面図である。
図５（ｂ）は、積層鉄心２００を構成する鉄心部材２０２ａ（特許請求の範囲の第２鉄心部材に相当）の平面図である。
図５（ｃ）は、積層鉄心２００を構成する鉄心部材２０２ｂ（特許請求の範囲の第１鉄心部材に相当）の平面図である。
図に示すように、積層鉄心２００は、各積層を構成する主たる鉄心部材である鉄心部材２０２ａの間に等間隔に鉄心部材２０２ｂを配置して構成されている。 Embodiment 2. FIG.
Hereinafter, the laminated iron core of the rotor according to the second embodiment of the present invention will be described with reference to the drawings, focusing on the differences from the first embodiment.
FIG. 5A is a cross-sectional view of the laminated core 200.
FIG. 5B is a plan view of an iron core member 202a (corresponding to the second iron core member in the claims) constituting the laminated iron core 200. FIG.
FIG. 5C is a plan view of an iron core member 202b (corresponding to the first iron core member in the claims) constituting the laminated iron core 200. FIG.
As shown in the figure, the laminated iron core 200 is configured by arranging iron core members 202b at equal intervals between iron core members 202a that are main iron core members constituting each laminate.

鉄心部材２０２ｂは、実施の形態１で使用した鉄心部材２ｂとほぼ同じ構成である。
鉄心部材２ｂと鉄心部材２０２ｂの違いは、鉄心部材２０２ｂの可動鉄心片２２０ｂには、隣接する層の可動鉄心片と嵌合するかしめ部２２７を備えている点である。
鉄心部材２０２ａには、鉄心部材２０２ｂの可動鉄心片２２０ｂとは異なる形状の可動鉄心片２２０ａ（特許請求の範囲の第２可動鉄心片に相当）を備えている。 The iron core member 202b has substantially the same configuration as the iron core member 2b used in the first embodiment.
The difference between the iron core member 2b and the iron core member 202b is that the movable iron core piece 220b of the iron core member 202b includes a caulking portion 227 that fits with the movable iron core piece of the adjacent layer.
The iron core member 202a includes a movable iron core piece 220a (corresponding to the second movable iron core piece in the claims) having a shape different from that of the movable iron core piece 220b of the iron core member 202b.

可動鉄心片２２０ａは、実施の形態１の可動鉄心片２０ｂと同様に、１枚の電磁鋼板から鉄心部材２０２ａを製造する時に、鉄心部材２０２ａから一旦打ち抜いたものを後で嵌め戻していて、磁石１側の端部に、磁石当接部２２３ａ（特許請求の範囲の第２磁石当接部に相当）を有している。 Similar to the movable core piece 20b of the first embodiment, the movable core piece 220a is a magnet that is once punched from the iron core member 202a when the iron core member 202a is manufactured from one electromagnetic steel sheet, and is then fitted back. A magnet abutting portion 223a (corresponding to a second magnet abutting portion in claims) is provided at an end portion on the one side.

図６は、可動鉄心片２２０ａと可動鉄心片２２０ｂとが所定の順序で積層された可動鉄心構造体２０６の斜視図である。
可動鉄心片２２０ａと可動鉄心片２２０ｂの積層間は、それぞれの可動鉄心片に設けた、かしめ部２２７でかしめて結合している。
かしめ部２２７の構造は、実施の形態１における鉄心部材２ａ、２ｂの本体部分を結合する、かしめ部４と同様である。
このように、可動鉄心片２２０ａ、２２０ｂの積層間を結合して可動鉄心構造体２０６として一体化することで、可動鉄心片２２０ｂの動きに連動して、可動鉄心構造体２０６全体で磁石１を径方向の内側から外側に向かって均一に押圧することができる。 FIG. 6 is a perspective view of the movable core structure 206 in which the movable core pieces 220a and the movable core pieces 220b are stacked in a predetermined order.
The stacks of the movable core pieces 220a and 220b are joined by caulking portions 227 provided on the respective movable iron core pieces.
The structure of the caulking portion 227 is the same as that of the caulking portion 4 that joins the main body portions of the iron core members 2a and 2b in the first embodiment.
In this way, the stacks of the movable core pieces 220a and 220b are combined and integrated as the movable core structure 206, so that the magnet 1 can be attached to the entire movable core structure 206 in conjunction with the movement of the movable core piece 220b. It can be uniformly pressed from the inner side to the outer side in the radial direction.

本発明の実施の形態２に係る積層鉄心２００によれば、磁石１に対する押圧力を、磁石１の表面全体に分散することができるので、磁石１の表面の特定部分に荷重が集中することがなく、磁石１の割れや、メッキの剥れを確実に防止することができる。 According to the laminated core 200 according to the second embodiment of the present invention, the pressing force against the magnet 1 can be distributed over the entire surface of the magnet 1, so that the load can be concentrated on a specific portion of the surface of the magnet 1. In addition, cracking of the magnet 1 and peeling of the plating can be reliably prevented.

実施の形態３．
以下、本発明の実施の形態３に係る回転子の積層鉄心を図を用いて実施の形態１と異なる部分を中心に説明する。
図７（ａ）は、積層鉄心３００の横断面図である。
図７（ｂ）は、積層鉄心３００を構成する鉄心部材３０２ａの平面図である。
図７（ｃ）は、積層鉄心３００を構成する鉄心部材３０２ｂの平面図である。
図に示すように、積層鉄心３００は、各積層を構成する主たる鉄心部材である鉄心部材３０２ａの間に等間隔に鉄心部材３０２ｂを配置して構成されている。 Embodiment 3 FIG.
Hereinafter, the laminated core of the rotor according to the third embodiment of the present invention will be described with reference to the drawings, focusing on the differences from the first embodiment.
FIG. 7A is a cross-sectional view of the laminated core 300.
FIG. 7B is a plan view of the iron core member 302 a constituting the laminated iron core 300.
FIG. 7C is a plan view of the iron core member 302 b that constitutes the laminated iron core 300.
As shown in the figure, the laminated core 300 is configured by arranging iron core members 302b at regular intervals between iron core members 302a that are main iron core members constituting each laminate.

図８は、鉄心部材３０２ｂの当接可動鉄心片３２０ｂ１、３２０ｂ２、可動鉄心片３２０ｂ３の構成と動作を示す図である。
鉄心部材３０２ｂは、実施の形態１及び実施の形態２において使用したものと異なり、２枚の当接可動鉄心片３２０ｂ１、３２０ｂ２（特許請求の範囲の第１磁石押圧部材に相当）と１枚の可動鉄心片３２０ｂ３（特許請求の範囲の回転軸当接部材に相当）を有する。
当接可動鉄心片３２０ｂ１と当接可動鉄心片３２０ｂ２とは、左右対称の三角形をしていて２枚で１組を成す。
可動鉄心片３２０ｂ３は、楔形のペン先のような形状をしている。
実施の形態１と同様に、可動鉄心片３２０ｂ３の回転軸当接部３２１ｂを回転軸５の端部Ｔが径方向外側に押圧すると、可動鉄心片３２０ｂ３が径方向の外側に移動する。
この時、可動鉄心片３２０ｂ３の径方向外側先端の楔形状部の２辺が、当接可動鉄心片３２０ｂ１、３２０ｂ２の隣り合わせの２辺（特許請求の範囲における第１辺）に沿って間に割り込む状態となる。
当接可動鉄心片３２０ｂ１、３２０ｂ２の磁石当接部３２３ｂ（特許請求の範囲における第２辺）以外の他の１辺（特許請求の範囲における第３辺）は、それぞれ動かない鉄心部材３０２ｂに接しているので、当接可動鉄心片３２０ｂ１、３２０ｂ２の磁石当接部３２３ｂが、磁石１の周方向の半分を径方向外側に押圧することとなる。 FIG. 8 is a diagram illustrating the configuration and operation of the abutting movable core pieces 320b1 and 320b2 and the movable core piece 320b3 of the iron core member 302b.
Unlike the core member 302b used in the first embodiment and the second embodiment, the two contact movable core pieces 320b1 and 320b2 (corresponding to the first magnet pressing member in the claims) and one sheet are used. It has a movable core piece 320b3 (corresponding to the rotating shaft abutting member in the claims).
The abutting movable iron core piece 320b1 and the abutting movable iron core piece 320b2 form a left-right symmetric triangle and form a pair.
The movable core piece 320b3 has a shape like a wedge-shaped pen tip.
Similarly to the first embodiment, when the end T of the rotating shaft 5 presses the rotating shaft abutting portion 321b of the movable core piece 320b3 radially outward, the movable core piece 320b3 moves outward in the radial direction.
At this time, the two sides of the wedge-shaped portion at the outer end in the radial direction of the movable core piece 320b3 cut in between two adjacent sides (first side in claims) of the abutting movable core pieces 320b1 and 320b2. It becomes a state.
One side (the third side in the claims) other than the magnet contact part 323b (the second side in the claims) of the contact movable iron core pieces 320b1 and 320b2 is in contact with the non-movable iron core member 302b. Therefore, the magnet contact part 323b of the contact movable iron core pieces 320b1 and 320b2 presses the circumferential half of the magnet 1 radially outward.

可動鉄心片３２０ｂ３の楔形状部の先端には、径方向に延びるスリット３２４ｂを設けている。
このスリット３２４ｂを挟む縁である先端部が変形部３２２ｂであり、実施の形態１の変形部２２ｂと同じ働きをする。
即ち、磁石１の製造時の厚さのばらつきにより、可動鉄心片３２０ｂ３に所定の力以上の力が掛かると、楔形状の先端部のスリット３２４ｂの間隔が狭くなる方向に変形する。
これにより可動鉄心片３２０ｂ３の径方向外側先端部の移動量を、回転軸当接部３２１ｂの移動量より小さくでき、磁石１に過度の押圧力が掛かることを防止できる。 A slit 324b extending in the radial direction is provided at the tip of the wedge-shaped portion of the movable core piece 320b3.
A tip portion that is an edge sandwiching the slit 324b is a deformed portion 322b, and functions in the same manner as the deformed portion 22b of the first embodiment.
That is, when a force greater than or equal to a predetermined force is applied to the movable core piece 320b3 due to variations in thickness when the magnet 1 is manufactured, the magnet 1 is deformed in a direction in which the interval between the slits 324b at the wedge-shaped tip portion is narrowed.
Thereby, the moving amount of the distal end portion in the radial direction of the movable iron core piece 320b3 can be made smaller than the moving amount of the rotating shaft contact portion 321b, and an excessive pressing force can be prevented from being applied to the magnet 1.

図７（ｂ）に示すように、鉄心部材３０２ａには、１つの磁石挿入口３２６に対して、２枚の当接可動鉄心片３２０ａ１、３２０ａ２を設けている。
そして、これらの当接可動鉄心片３２０ａ１、３２０ａ２は、隣接する積層の鉄心部材３０２ａの当接可動鉄心片３２０ａ１、３２０ａ２又は、隣接する積層の鉄心部材３０２ｂの当接可動鉄心片３２０ｂ１、３２０ｂ２と、かしめ部３２７で結合されている。
積層鉄心３００の全ての積層の、上下に隣接して積層する当接可動鉄心片が積層鉄心３００の軸方向に結合されることにより、実施の形態２と同様の可動鉄心構造体を形成する。
これにより、実施の形態２と同様に、所定の枚数おきに配置された鉄心部材３０２ｂの可動鉄心片３２０ｂ３の移動に応じて、全ての積層の当接可動鉄心片が磁石１の径方向内側の面を外側方向に、均等に押圧する。 As shown in FIG. 7B, the iron core member 302a is provided with two abutting movable core pieces 320a1 and 320a2 with respect to one magnet insertion port 326.
These abutting movable core pieces 320a1, 320a2 are abutting movable iron core pieces 320a1, 320a2 of adjacent laminated core members 302a or abutting movable iron core pieces 320b1, 320b2 of adjacent laminated iron core members 302b, It is connected by a caulking portion 327.
A movable core structure similar to that of the second embodiment is formed by joining the abutting movable core pieces, which are laminated adjacent to each other in the upper and lower sides, of all the laminated cores 300 in the axial direction of the laminated core 300.
Thus, as in the second embodiment, all the laminated movable movable core pieces are arranged on the radially inner side of the magnet 1 in accordance with the movement of the movable core pieces 320b3 of the iron core members 302b arranged at predetermined intervals. Press the surface evenly in the outward direction.

図９は、本実施の形態における回転子の積層鉄心３００に発生する磁界経路７を示す図である。
積層鉄心３００の内部では矢印に示すように磁束が流れる。
本発明の実施の形態３に係る積層鉄心３００によれば、磁石１が固定されたときに、磁石１→当接可動鉄心片３２０ｂ２→鉄心部材３０２ｂ→当接可動鉄心片３２０ｂ１→磁石１と流れる磁束及び、磁石１→当接可動鉄心片３２０ｂ１→鉄心部材３０２ｂ→当接可動鉄心片３２０ｂ２→磁石１と流れる磁束経路に隙間が生じない。
当接可動鉄心片３２０ｂ１、３２０ｂ２と鉄心部材３０２ｂ本体との境界面は常に接触しているからである。
このように、鉄心内部で隙間ができる変形部３２２ｂを、磁石１の中心から径方向内側であって磁界経路７から外れた部分に設けることで、磁界経路７には隙間の無い、磁気抵抗の小さい回転子の積層鉄心３００を得ることができる。 FIG. 9 is a diagram showing a magnetic field path 7 generated in the laminated core 300 of the rotor in the present embodiment.
Inside the laminated core 300, magnetic flux flows as shown by arrows.
According to the laminated iron core 300 according to the third embodiment of the present invention, when the magnet 1 is fixed, the magnet 1 → the abutting movable core piece 320b2 → the iron core member 302b → the abutting movable iron core piece 320b1 → the magnet 1 flows. There is no gap in the magnetic flux path that flows between the magnetic flux and the magnet 1 → the movable contact core piece 320b1 → the core member 302b → the movable contact core piece 320b2 → the magnet 1.
This is because the boundary surfaces between the contact movable core pieces 320b1 and 320b2 and the core member 302b main body are always in contact.
In this way, by providing the deformed portion 322b in which a gap is formed inside the iron core in a portion that is radially inward from the center of the magnet 1 and that is out of the magnetic field path 7, there is no gap in the magnetic field path 7, and the magnetic resistance A small rotor laminated core 300 can be obtained.

実施の形態４．
以下、本発明の実施の形態４に係る回転子の積層鉄心を図を用いて実施の形態１と異なる部分を中心に説明する。
図１０は、本実施の形態に係る積層鉄心の可動鉄心片４２０ｂ周辺の平面図である。
図に示すように、可動鉄心片４２０ｂの磁石当接部４２３ｂの両端部に、径方向に磁石の側面に突出する磁石把持部４２８ｂを設けた。
磁石把持部４２８ｂは、回転軸５を回転軸挿入口２５ｂに挿入することにより、可動鉄心片４２０ｂが径方向に移動して磁石１を外側に押圧すると同時に、磁石１の周方向両側面に磁石把持部４２８ｂの先端を接触させる。
可動鉄心片４２０ｂをこのように構成することにより、磁石１は、磁石挿入口４２６の中で回転子の回転方向にも確実に固定される。 Embodiment 4 FIG.
Hereinafter, the laminated core of the rotor according to the fourth embodiment of the present invention will be described with reference to the drawings, focusing on the differences from the first embodiment.
FIG. 10 is a plan view of the periphery of the movable core piece 420b of the laminated core according to the present embodiment.
As shown in the figure, magnet gripping portions 428b that protrude in the radial direction on the side surfaces of the magnets are provided at both ends of the magnet contact portion 423b of the movable core piece 420b.
The magnet gripping part 428b inserts the rotary shaft 5 into the rotary shaft insertion port 25b, so that the movable iron core piece 420b moves in the radial direction and presses the magnet 1 outward. The tip of the grip portion 428b is brought into contact.
By configuring the movable core piece 420b in this manner, the magnet 1 is reliably fixed in the rotation direction of the rotor in the magnet insertion port 426.

実施の形態５．
以下、本発明の実施の形態６に係る回転子の積層鉄心を図を用いて実施の形態５と異なる部分を中心に説明する。
図１１は、本実施の形態に係る積層鉄心の可動鉄心片５２０ｂ周辺の平面図である。
図に示すように、磁石１の一部に凹部１２を設け、この凹部１２に一致する凸部５２９ｂを可動鉄心片５２０ｂの磁石当接部５２３ｂの中央に設けている。
回転軸５を回転軸挿入口２５ｂに挿入することにより、可動鉄心片５２０ｂの凸部５２９ｂが磁石１の凹部１２に接合する。
これにより、磁石１を回転子の回転方向に対しても確実に固定することができる。 Embodiment 5 FIG.
Hereinafter, the laminated core of the rotor according to the sixth embodiment of the present invention will be described with reference to the drawings, focusing on the differences from the fifth embodiment.
FIG. 11 is a plan view of the periphery of the movable core piece 520b of the laminated core according to the present embodiment.
As shown in the figure, a concave portion 12 is provided in a part of the magnet 1, and a convex portion 529b corresponding to the concave portion 12 is provided at the center of the magnet contact portion 523b of the movable core piece 520b.
By inserting the rotary shaft 5 into the rotary shaft insertion port 25 b, the convex portion 529 b of the movable core piece 520 b is joined to the concave portion 12 of the magnet 1.
Thereby, the magnet 1 can be reliably fixed also with respect to the rotation direction of the rotor.

尚、本発明は、その発明の範囲内において、各実施の形態を自由に組み合わせたり、各実施の形態を適宜、変形、省略することが可能である。 It should be noted that the present invention can be freely combined with each other within the scope of the invention, and each embodiment can be appropriately modified or omitted.

１００，２００，３００積層鉄心、１磁石、１０磁石挿入穴、１１回転軸穴、
１２凹部、２ａ，２ｂ，２０２ａ，２０２ｂ，３０２ａ，鉄心部材、
２０ｂ，２２０ａ，２２０ｂ，３２０ｂ３，４２０ｂ，５２０ｂ可動鉄心片、
２１ｂ，３２１ｂ回転軸当接部、２２ｂ，３２２ｂ変形部、
２３ｂ，２２３ａ，３２３ｂ，４２３ｂ，５２３ｂ磁石当接部、
２４ｂ，３２４ｂスリット、２５ａ，２５ｂ回転軸挿入口、
２６，３２６，４２６磁石挿入口、２２７，３２７かしめ部、
４２８ｂ磁石把持部、５２９ｂ凸部、
３２０ａ１，３２０ｂ１，３２０ｂ２当接可動鉄心片、４かしめ部、５回転軸、
５１嵌合部、２０６可動鉄心構造体、７磁界経路。 100, 200, 300 laminated iron core, 1 magnet, 10 magnet insertion hole, 11 rotating shaft hole,
12 recesses, 2a, 2b, 202a, 202b, 302a, iron core members,
20b, 220a, 220b, 320b3, 420b, 520b movable core piece,
21b, 321b rotating shaft contact portion, 22b, 322b deformation portion,
23b, 223a, 323b, 423b, 523b magnet contact portion,
24b, 324b slit, 25a, 25b rotary shaft insertion port,
26, 326, 426 Magnet insertion slot, 227, 327 Caulking part,
428b magnet holding part, 529b convex part,
320a1, 320b1, 320b2 abutting movable iron core piece, 4 caulking part, 5 rotating shaft,
51 fitting part, 206 movable iron core structure, 7 magnetic field path.

Claims

周方向に等間隔に埋設された磁石を有する回転子の積層鉄心において、
前記積層鉄心の１つの積層を構成する第１鉄心部材であって、
回転軸が貫通する回転軸挿入口と、
前記磁石が貫通する、複数の磁石挿入口と、
前記第１鉄心部材の本体から分離された、前記回転軸が押圧する回転軸当接部及び、前記磁石の前記積層鉄心の径方向の内側面を、前記積層鉄心の径方向の外側に向かって押圧する第１磁石当接部を有する第１可動鉄心片を備え、
前記第１可動鉄心片は、３つに分離した部材であって、
一端に前記回転軸当接部を、他端に楔形状部を有する回転軸当接部材と、
それぞれ前記第１磁石当接部を有する対称な外形形状をした２枚の第１磁石押圧部材とを有し、
前記回転軸当接部材の前記楔形状部の２辺が、２枚の前記第１磁石押圧部材の第１辺にそれぞれ接している回転子の積層鉄心。 In the laminated iron core of the rotor having magnets embedded at equal intervals in the circumferential direction,
A first iron core member constituting one of the laminated iron cores,
A rotation shaft insertion port through which the rotation shaft penetrates;
A plurality of magnet insertion openings through which the magnet passes;
It said first separated from the body of the core member, before Symbol rotation axis rotary shaft presses abutment及beauty, the inner surface of the radial direction of the laminated core before Symbol magnets, radially outside of the laminated core A first movable iron core piece having a first magnet contact portion that presses toward the
The first movable iron core piece is a member separated into three parts,
A rotating shaft abutting member having the rotating shaft abutting portion at one end and a wedge-shaped portion at the other end;
Two first magnet pressing members each having a symmetrical outer shape having the first magnet contact portion,
A laminated iron core of a rotor in which two sides of the wedge-shaped portion of the rotating shaft contact member are in contact with the first sides of the two first magnet pressing members.

前記第１磁石押圧部材は３角形であって、それぞれの第２辺が前記第１磁石当接部として前記磁石を押圧し、それぞれの第３辺が前記第１鉄心部材の本体と接している請求項１に記載の回転子の積層鉄心。 The first magnet pressing member has a triangular shape, and each second side presses the magnet as the first magnet contact portion, and each third side is in contact with the main body of the first iron core member. The laminated core of the rotor according to claim 1.

前記第１可動鉄心片は、前記回転軸当接部と前記第１磁石当接部の間に、前記回転軸当接部と前記第１磁石当接部の間の長さを縮小させる変形部を備えた請求項１又は請求項２に記載の回転子の積層鉄心。 The first movable core pieces, the rotary shaft and abutting portion between said first magnet abutment, deformation to reduce the length between the front Symbol rotary shaft abutment portion of the first magnet abutment The laminated iron core of the rotor of Claim 1 or Claim 2 provided with the part.

前記楔形状部は、前記積層鉄心の径方向に延在するスリットを備えた請求項３に記載の回転子の積層鉄心。 The wedge-shaped portion, laminated core of the rotor according to claim 3 which includes a slit extending in a radial direction before Symbol laminated core.

前記積層鉄心は、前記積層鉄心の１つの積層を構成する第２鉄心部材であって、
隣接する前記第１鉄心部材の２枚の前記第１磁石押圧部材に重ねて接合され、前記第２鉄心部材の本体から外周部が分離され、前記磁石の前記積層鉄心の径方向の前記内側面を、前記積層鉄心の径方向の外側に向かって押圧する、
それぞれ前記第１磁石押圧部材と同じ外形形状をした２枚の第２磁石押圧部材を有する請求項１から請求項４のいずれか１項に記載の回転子の積層鉄心。 The laminated iron core is a second iron core member constituting one laminated of the laminated iron cores,
Is joined superimposed on the first magnet pressing member of the two adjacent said first core member, the outer peripheral portion from the body of the second core member are separated, before Symbol said radial direction of the laminated core of the magnet Pressing the inner surface toward the radial outer side of the laminated core;
Laminated core of each of the first rotor as set forth 請 Motomeko 1 that have a two second magnet pressing member in the same outer shape as the magnet pressing member to any one of claims 4.

周方向に等間隔に埋設された磁石を有する回転子の積層鉄心において、
前記積層鉄心の１つの積層を構成する第１鉄心部材であって、
回転軸が貫通する回転軸挿入口と、
前記磁石が貫通する、複数の磁石挿入口と、
前記第１鉄心部材の本体から分離された、前記回転軸が押圧する回転軸当接部及び、前記磁石の前記積層鉄心の径方向の内側面を、前記積層鉄心の径方向の外側に向かって押圧する第１磁石当接部を有する第１可動鉄心片を備え、
前記積層鉄心は、前記積層鉄心の１つの積層を構成する第２鉄心部材であって、
隣接する前記第１鉄心部材の前記第１可動鉄心片に重ねて接合され、前記第２鉄心部材の本体から外周部が分離され、前記磁石の前記積層鉄心の径方向の前記内側面を、前記積層鉄心の径方向の外側に向かって押圧する、第２磁石当接部を有する第２可動鉄心片を備えた回転子の積層鉄心。 In the laminated iron core of the rotor having magnets embedded at equal intervals in the circumferential direction,
A first iron core member constituting one of the laminated iron cores,
A rotation shaft insertion port through which the rotation shaft penetrates;
A plurality of magnet insertion openings through which the magnet passes;
It said first separated from the body of the core member, before Symbol rotation axis rotary shaft presses abutment及beauty, the inner surface of the radial direction of the laminated core before Symbol magnets, radially outside of the laminated core A first movable iron core piece having a first magnet contact portion that presses toward the
The laminated iron core is a second iron core member constituting one laminated of the laminated iron cores,
Is joined superimposed on the first movable core pieces adjacent the first core member, the outer peripheral portion from the body of the second core member are separated, the inner surface of the radial direction of the laminated core before Symbol magnets A laminated iron core of a rotor including a second movable iron core piece having a second magnet abutting portion that presses toward the radially outer side of the laminated iron core.

前記第１可動鉄心片は、前記回転軸当接部と前記第１磁石当接部の間に、前記回転軸当接部と前記第１磁石当接部の間の長さを縮小させる変形部を備えた請求項６に記載の回転子の積層鉄心。 The first movable core pieces, the rotary shaft and abutting portion between said first magnet abutment, deformation to reduce the length between the front Symbol rotary shaft abutment portion of the first magnet abutment The laminated iron core of the rotor according to claim 6 provided with a section.

前記変形部は、前記第１可動鉄心片のうち、前記第１可動鉄心片の内部に径方向に垂直に設けたスリットと、前記第１可動鉄心片の外周部との間の縁部分である請求項７に記載の回転子の積層鉄心。 The deforming portion is an edge portion between a slit provided perpendicularly in a radial direction inside the first movable core piece and an outer peripheral portion of the first movable core piece in the first movable core piece. The laminated core of the rotor according to claim 7 .