JPS5720161A - Motor - Google Patents

Motor

Info

Publication number
JPS5720161A
JPS5720161A JP9246080A JP9246080A JPS5720161A JP S5720161 A JPS5720161 A JP S5720161A JP 9246080 A JP9246080 A JP 9246080A JP 9246080 A JP9246080 A JP 9246080A JP S5720161 A JPS5720161 A JP S5720161A
Authority
JP
Japan
Prior art keywords
circumferential surface
point
rotor
inner circumferential
whose curvature
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
JP9246080A
Other languages
Japanese (ja)
Inventor
Yasumasa Iwasaki
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.)
Daido Steel Co Ltd
Original Assignee
Daido Steel 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 Daido Steel Co Ltd filed Critical Daido Steel Co Ltd
Priority to JP9246080A priority Critical patent/JPS5720161A/en
Publication of JPS5720161A publication Critical patent/JPS5720161A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
    • H02K23/04—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having permanent magnet excitation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Dc Machiner (AREA)

Abstract

PURPOSE:To make the magnetic field distribution on the rotor facing surfaces approximately uniform over both ends and the center, by forming the inner circumferential surface of each of permanent magnets into a curved surface whose curvature center is a point located at a place motor remoted from the permanent magnet than the rotor central point. CONSTITUTION:A rotor 2 is rotatably disposed in a magnetic cylindrical body 1 so as to rotate about a point C, having a truely round shape whose curvature center is the point C similarly to the outer circumferential surface of the magnetic cylindrical body. In addition, the outer circumferential surface of each of a plurality of permanent magnets 3 such as ferrite magnets or the like, having a fan-shaped section, is closely attached to the inner circumferential surface of the cylindrical body 1. The outer circumferential surface 4 of said magnet 3 is formed into a curved surface whose curvature center is a point 6, while the inner circumferential surface 7 thereof is formed into a curved surface whose curvature center is a point 9. Thereby, the gap between the inner circumferential surface 7 and the rotor 2 is so formed that the central part 10 is narrow while both side parts 11 are wider than that. Accordingly, the magnetic field distribution can be approximately uniform over both end parts and the central part.
JP9246080A 1980-07-07 1980-07-07 Motor Pending JPS5720161A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9246080A JPS5720161A (en) 1980-07-07 1980-07-07 Motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9246080A JPS5720161A (en) 1980-07-07 1980-07-07 Motor

Publications (1)

Publication Number Publication Date
JPS5720161A true JPS5720161A (en) 1982-02-02

Family

ID=14054970

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9246080A Pending JPS5720161A (en) 1980-07-07 1980-07-07 Motor

Country Status (1)

Country Link
JP (1) JPS5720161A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59145607A (en) * 1983-02-08 1984-08-21 Sumitomo Rubber Ind Ltd Pneumatic tire
JPH0336947A (en) * 1989-03-02 1991-02-18 Balbec Corp D.c. machine wherein ferromagnetic permanent magnet is used
US5170085A (en) * 1990-08-29 1992-12-08 Matsushita Electric Industrial Co., Ltd. Rotor for rotary machine with permanent magnets
WO2010020222A3 (en) * 2008-08-22 2010-07-15 Brose Fahrzeugteile Gmbh & Co. Kg, Würzburg Electric motor
JP2010213569A (en) * 2009-03-10 2010-09-24 Johnson Electric Sa Motor and window lift
US20120025655A1 (en) * 2010-07-29 2012-02-02 System General Corporation Motor rotor and motor having the motor rotor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59145607A (en) * 1983-02-08 1984-08-21 Sumitomo Rubber Ind Ltd Pneumatic tire
JPH0336947A (en) * 1989-03-02 1991-02-18 Balbec Corp D.c. machine wherein ferromagnetic permanent magnet is used
US5170085A (en) * 1990-08-29 1992-12-08 Matsushita Electric Industrial Co., Ltd. Rotor for rotary machine with permanent magnets
WO2010020222A3 (en) * 2008-08-22 2010-07-15 Brose Fahrzeugteile Gmbh & Co. Kg, Würzburg Electric motor
JP2010213569A (en) * 2009-03-10 2010-09-24 Johnson Electric Sa Motor and window lift
US20120025655A1 (en) * 2010-07-29 2012-02-02 System General Corporation Motor rotor and motor having the motor rotor

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