JPS5716560A - Forming method of anisotropic annular magnet for generator of bicycle - Google Patents

Forming method of anisotropic annular magnet for generator of bicycle

Info

Publication number
JPS5716560A
JPS5716560A JP8569581A JP8569581A JPS5716560A JP S5716560 A JPS5716560 A JP S5716560A JP 8569581 A JP8569581 A JP 8569581A JP 8569581 A JP8569581 A JP 8569581A JP S5716560 A JPS5716560 A JP S5716560A
Authority
JP
Japan
Prior art keywords
magnet
end faces
thicknesswise direction
synthetic resin
annular
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
JP8569581A
Other languages
Japanese (ja)
Inventor
Shokichi Kumakura
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP8569581A priority Critical patent/JPS5716560A/en
Publication of JPS5716560A publication Critical patent/JPS5716560A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/17—Stator cores with permanent magnets

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

PURPOSE:To form an annular magnet having high generating capacity by using inexpensive ferrite by annularly arranging circular-arc-shaped pole pieces magnetized in thicknesswise direction and integrally solidifying synthetic resin between V-shaped gaps among the pole pieces and both end faces of the annular unit. CONSTITUTION:Anisotropic magnet piece 1 made of ferrite magnet is pressed in the thicknesswise direction in parallel magnetic field of the thicknesswise direction to provide anisotropy of the thicknesswise direction. Both end faces 1a, 1b of the piece 1 is formed in parallel with the magnetic field. A plurality of such magnet pieces 1 are employed, annularly arranged so that the inner peripheral surfaces form a cylindrical surface, and an annular unit 3 is formed. V-shaped gap 2 formed between the end faces of the pieces 1 and both end faces of the annular unit are integrated with synthetic resin to form a synthetic resin holder 4, and an anisotropic annular magnet 5 is formed. In this manner, high generating capacity can be obtained with inexpensive ferrite.
JP8569581A 1981-06-05 1981-06-05 Forming method of anisotropic annular magnet for generator of bicycle Pending JPS5716560A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8569581A JPS5716560A (en) 1981-06-05 1981-06-05 Forming method of anisotropic annular magnet for generator of bicycle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8569581A JPS5716560A (en) 1981-06-05 1981-06-05 Forming method of anisotropic annular magnet for generator of bicycle

Publications (1)

Publication Number Publication Date
JPS5716560A true JPS5716560A (en) 1982-01-28

Family

ID=13865961

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8569581A Pending JPS5716560A (en) 1981-06-05 1981-06-05 Forming method of anisotropic annular magnet for generator of bicycle

Country Status (1)

Country Link
JP (1) JPS5716560A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017017877A (en) * 2015-07-01 2017-01-19 ミネベア株式会社 Rotor and motor
CN108768105A (en) * 2018-06-11 2018-11-06 成都银河磁体股份有限公司 A kind of rotor assembly manufacturing process

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4839903A (en) * 1971-09-23 1973-06-12
JPS502197A (en) * 1973-05-14 1975-01-10

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4839903A (en) * 1971-09-23 1973-06-12
JPS502197A (en) * 1973-05-14 1975-01-10

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017017877A (en) * 2015-07-01 2017-01-19 ミネベア株式会社 Rotor and motor
CN108768105A (en) * 2018-06-11 2018-11-06 成都银河磁体股份有限公司 A kind of rotor assembly manufacturing process

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