JP3598635B2 - Rotor with rotating electric machine magnet - Google Patents

Rotor with rotating electric machine magnet Download PDF

Info

Publication number
JP3598635B2
JP3598635B2 JP3915896A JP3915896A JP3598635B2 JP 3598635 B2 JP3598635 B2 JP 3598635B2 JP 3915896 A JP3915896 A JP 3915896A JP 3915896 A JP3915896 A JP 3915896A JP 3598635 B2 JP3598635 B2 JP 3598635B2
Authority
JP
Japan
Prior art keywords
magnet
shaft
electric machine
shrink
rotor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP3915896A
Other languages
Japanese (ja)
Other versions
JPH09233752A (en
Inventor
博史 針江
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Systems Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Electric Systems Co Ltd filed Critical Fuji Electric Systems Co Ltd
Priority to JP3915896A priority Critical patent/JP3598635B2/en
Publication of JPH09233752A publication Critical patent/JPH09233752A/en
Application granted granted Critical
Publication of JP3598635B2 publication Critical patent/JP3598635B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

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

Description

【発明の属する技術分野】
この発明は、回転電機の磁石付回転子に関する。
【従来の技術】
図２に示す従来例の片側断面図において、軸１に磁石２を接着剤３で固着してトルクに対向させ、磁石２の外周に補強円筒４を焼嵌めして磁石２の遠心力を保持する。
【発明が解決しようとする課題】
前記の従来例では、接着剤３を軸１と磁石２との間にむらなく塗布することが困難で接着の信頼性が低い。また、接着が確実であっても、運転中の温度差による熱膨張差や、回転中の磁石２の遠心力による伸びにより接着剤３が剥離する恐れがある。接着剤３に代えて、軸１に磁石２を焼嵌めすることもあるが、磁石２は圧縮強度の割に引張り強度が低いので、焼嵌めの初期しめしろを大きくすることができなくて、高速回転では磁石２の遠心力でしめしろが減少してトルクに耐えない。
この発明の課題は、接着によらないで引張り強度の低い磁石を軸に確実に固着することができる回転電機の磁石付回転子を提供することにある。
【課題を解決するための手段】
この発明の回転電機の磁石付回転子は、軸に嵌合した磁石の外周に補強円筒を焼嵌めし、磁石の側面で軸に回り止め円板を固着手段で固着し、補強円筒の軸方向の突起と回り止め円板の円周上の切欠けとを係合させるものである。
この発明の回転電機の磁石付回転子によれば、固定子から磁石に伝わるトルクは、焼嵌めされる補強円筒と、補強円筒の突起と回り止め円板の切欠けと、回り止め円板と軸との固着手段とを経由して軸に伝達される。磁石は引張り強度の割に圧縮強度が高いので補強円筒の大きな焼嵌めの初期しめしろに耐える。突起と切欠けの係合も確実である。回り止め円板と軸との固着手段は、例えば焼嵌めであり、回り止め円板は普通の高強度材料を使用できるので、大きな焼嵌めの初期しめしろを与えることができる。焼嵌めの固着手段に代えて、軸と回り止め円板との間のローレット、キー、溶接などでもよい。
【発明の実施の形態】
図１に示す実施例の回転図示断面図を付記した片側断面図において、軸１に磁石２を嵌合する。初期しめしろの小さい焼嵌めがよい。磁石２の外周に補強円筒１４を焼嵌めする。磁石２の側面で軸１に回り止め円板１５を固着手段１６で固着する。補強円筒１４の軸方向の突起１４ａと回り止め円板１５の円周上の切欠け１５ａとを係合させる。反対側の円板２０と補強円筒１４とで係合させてもよい。
この実施例によれば、図示しない固定子から磁石２に伝わるトルクは、焼嵌めされる補強円筒１４と、補強円筒１４の突起１４ａと回り止め円板１５の切欠け１５ａと、回り止め円板１５と軸１との固着手段１６とを経由して軸１に伝達される。磁石２は引張り強度の割に圧縮強度が高いので補強円筒１４の大きな焼嵌めの初期しめしろに耐える。突起１４ａと切欠け１５ａの係合も確実である。回り止め円板１５と軸１との固着手段１６は、例えば焼嵌めであり、回り止め円板１５は普通の高強度材料を使用できるので、大きな焼嵌めの初期しめしろを与えることができる。焼嵌めの固着手段１６に代えて、軸１と回り止め円板１５との間のローレット、キー、溶接などでもよい。
【発明の効果】
この発明の回転電機の磁石付回転子によれば、補強円筒の突起と回り止め円板の切欠け及び回り止め円板と軸との固着手段とにより、接着によらないで引張り強度の低い磁石を軸に確実に固着することができるという効果がある。
【図面の簡単な説明】
【図１】実施例の回転図示断面図を付記した片側断面図
【図２】従来例の片側断面図
【符号の説明】
１ 軸 ２ 磁石
１４ 補強円筒 １４ａ 突起
１５ 回り止め円板 １５ａ 切欠け
１６ 固着手段TECHNICAL FIELD OF THE INVENTION
The present invention relates to a rotor with a magnet for a rotating electric machine.
[Prior art]
In the one-side sectional view of the conventional example shown in FIG. 2, a magnet 2 is fixed to an axis 1 with an adhesive 3 so as to oppose a torque, and a reinforcing cylinder 4 is shrink-fitted on the outer periphery of the magnet 2 to maintain the centrifugal force of the magnet 2. I do.
[Problems to be solved by the invention]
In the above-mentioned conventional example, it is difficult to apply the adhesive 3 evenly between the shaft 1 and the magnet 2, and the reliability of bonding is low. Further, even if the adhesion is secure, the adhesive 3 may be peeled off due to a difference in thermal expansion due to a temperature difference during operation or an elongation due to centrifugal force of the rotating magnet 2. In place of the adhesive 3, the magnet 2 may be shrink-fitted to the shaft 1. However, since the magnet 2 has a low tensile strength for its compressive strength, the initial interference of shrink-fitting cannot be increased. In high-speed rotation, the interference is reduced due to the centrifugal force of the magnet 2 and the magnet 2 cannot withstand the torque.
An object of the present invention is to provide a magnet-equipped rotor of a rotating electric machine that can securely fix a magnet having low tensile strength to a shaft without using adhesion.
[Means for Solving the Problems]
The rotor with magnet of the rotating electric machine according to the present invention is characterized in that a reinforcing cylinder is shrink-fitted on the outer periphery of a magnet fitted to a shaft, a detent disk is fixed to the shaft on a side surface of the magnet by a fixing means, and the axial direction of the reinforcing cylinder is Are engaged with the notches on the circumference of the detent disk.
According to the rotor with magnet of the rotating electric machine of the present invention, the torque transmitted from the stator to the magnet is caused by the reinforcing cylinder to be shrink-fitted, the protrusion of the reinforcing cylinder and the notch of the detent disk, and the detent disk. It is transmitted to the shaft via the fixing means to the shaft. Since the magnet has a high compressive strength compared to a tensile strength, it can withstand the initial interference of a large shrink fit of the reinforcing cylinder. The engagement between the projection and the notch is also ensured. The means for fixing the non-rotating disc to the shaft is, for example, a shrink fit. Since the non-rotating disc can use a normal high-strength material, a large initial interference of the shrink fitting can be provided. Instead of the shrink-fitting fixing means, a knurl, a key, a welding, or the like between the shaft and the detent disk may be used.
BEST MODE FOR CARRYING OUT THE INVENTION
In the one-side cross-sectional view to which the rotation drawing cross-sectional view of the embodiment shown in FIG. 1 is attached, a magnet 2 is fitted to a shaft 1. A shrink fit with a small initial interference is preferred. The reinforcing cylinder 14 is shrink-fitted around the magnet 2. The rotation preventing disk 15 is fixed to the shaft 1 on the side surface of the magnet 2 by fixing means 16. The projection 14a in the axial direction of the reinforcing cylinder 14 is engaged with the notch 15a on the circumference of the detent disk 15. The opposite disk 20 and the reinforcing cylinder 14 may be engaged with each other.
According to this embodiment, the torque transmitted from the stator (not shown) to the magnet 2 includes the reinforcing cylinder 14 to be shrink-fitted, the protrusion 14 a of the reinforcing cylinder 14, the notch 15 a of the detent disk 15, and the detent disk 15. The power is transmitted to the shaft 1 via the fixing means 16 between the shaft 15 and the shaft 1. Since the magnet 2 has a high compressive strength compared to a tensile strength, it can withstand the initial interference of a large shrink fit of the reinforcing cylinder 14. The engagement between the protrusion 14a and the notch 15a is also ensured. The fixing means 16 for fixing the rotation preventing disk 15 to the shaft 1 is, for example, a shrink fit. Since the rotation preventing disk 15 can be made of a normal high-strength material, a large initial interference of the shrink fitting can be provided. Instead of the shrink-fit fixing means 16, a knurl, a key, welding, or the like between the shaft 1 and the detent disk 15 may be used.
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the rotor with a magnet of the rotary electric machine of this invention, the magnet of low tensile strength without adhesion | attachment by the protrusion of a reinforcement cylinder, the notch of a detent disk, and the fixing means of a detent disk and a shaft. Can be securely fixed to the shaft.
[Brief description of the drawings]
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a one-side sectional view to which a rotationally-illustrated sectional view of an embodiment is added. FIG.
1 shaft 2 magnet 14 reinforcing cylinder 14a projection 15 detent disk 15a notch 16 fixing means

Claims (1)

軸に嵌合した磁石の外周に補強円筒を焼嵌めし、磁石の側面で軸に回り止め円板を固着手段で固着し、補強円筒の軸方向の突起と回り止め円板の円周上の切欠けとを係合させることを特徴とする回転電機の磁石付回転子。A reinforcing cylinder is shrink-fitted on the outer periphery of the magnet fitted to the shaft, and a detent disk is fixed to the shaft on the side surface of the magnet by fixing means. A magnet-equipped rotor for a rotating electric machine, wherein a notch is engaged with the notch.
JP3915896A 1996-02-27 1996-02-27 Rotor with rotating electric machine magnet Expired - Fee Related JP3598635B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3915896A JP3598635B2 (en) 1996-02-27 1996-02-27 Rotor with rotating electric machine magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3915896A JP3598635B2 (en) 1996-02-27 1996-02-27 Rotor with rotating electric machine magnet

Publications (2)

Publication Number Publication Date
JPH09233752A JPH09233752A (en) 1997-09-05
JP3598635B2 true JP3598635B2 (en) 2004-12-08

Family

ID=12545314

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3915896A Expired - Fee Related JP3598635B2 (en) 1996-02-27 1996-02-27 Rotor with rotating electric machine magnet

Country Status (1)

Country Link
JP (1) JP3598635B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3850579B2 (en) * 1999-03-24 2006-11-29 株式会社東芝 Permanent magnet type rotating electric machine
JP2008289221A (en) * 2007-05-15 2008-11-27 Mitsubishi Electric Corp Rotor of rotary electric machine
KR101382311B1 (en) * 2012-12-28 2014-04-08 주식회사 뉴로스 Rotor assembling method for electric turbo-charger
KR101382310B1 (en) * 2012-12-31 2014-04-08 주식회사 뉴로스 Rotor assembling method for electric turbo-charger

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02133180U (en) * 1989-04-07 1990-11-05
JP2847393B2 (en) * 1989-08-10 1999-01-20 アイチ―エマソン電機株式会社 Permanent magnet type rotor
JPH06315245A (en) * 1993-04-27 1994-11-08 Japan Servo Co Ltd Permanent magnet rotor for canned motor pump
JPH07284237A (en) * 1994-04-06 1995-10-27 Fanuc Ltd Rotor of permanent magnet motor

Also Published As

Publication number Publication date
JPH09233752A (en) 1997-09-05

Similar Documents

Publication Publication Date Title
JP3992347B2 (en) Electric motor
JPS648536B2 (en)
JPH01133546A (en) Rotor structure of high-speed induction type motor
JP2008515365A (en) Rotor with clamping device
JP3598635B2 (en) Rotor with rotating electric machine magnet
JP3818714B2 (en) Magnetic electric rotor with claws
JPH07312837A (en) Rotor for permanent magnet motor
JP2000050557A (en) Slotless motor for ultra-high speed drive
US7271514B2 (en) Rotor structure
CA2170921A1 (en) Refiner and a method for attaching discs thereof
JPH10225032A (en) Rotor for permanent magnet type dynamo-electric machine and its manufacture
JP2005051826A (en) Fixed structure of permanent magnet in rotor of rotating electric machine
JPH11155248A (en) Rotor
JP2004173341A (en) Rotating electric machine rotor, rotating electric machine, and power generation system
EP0607429B1 (en) Induction motor of the outer rotor-type
JPH0723549A (en) Rotor structure for high speed motor
JP2000152535A (en) Rotor for permanent magnet motor
JP2855214B2 (en) Rotor manufacturing method
JPH0389821A (en) Rotor
JP3596633B2 (en) Method of fixing rotor of magnetic bearing motor
JPH0421331A (en) Motor
JP2002142395A (en) Rotor and motor using the same
JP3629769B2 (en) Rotating electrical machine rotor
JPH0629357U (en) Rotating electric machine rotor
JP2001339888A (en) Magnet rotor

Legal Events

Date Code Title Description
A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20040608

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

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20040824

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20040906

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20070924

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080924

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080924

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090924

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090924

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100924

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110924

Year of fee payment: 7

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110924

Year of fee payment: 7

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110924

Year of fee payment: 7

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313111

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110924

Year of fee payment: 7

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110924

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120924

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120924

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130924

Year of fee payment: 9

LAPS Cancellation because of no payment of annual fees