GB1436980A - Permanent magnet rotor assembly - Google Patents

Permanent magnet rotor assembly

Info

Publication number
GB1436980A
GB1436980A GB2796474A GB2796474A GB1436980A GB 1436980 A GB1436980 A GB 1436980A GB 2796474 A GB2796474 A GB 2796474A GB 2796474 A GB2796474 A GB 2796474A GB 1436980 A GB1436980 A GB 1436980A
Authority
GB
United Kingdom
Prior art keywords
hub
rare earth
cobalt
layer
sintered
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
Application number
GB2796474A
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.)
Bendix Corp
Original Assignee
Bendix Corp
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
Priority claimed from US372718A external-priority patent/US3909647A/en
Priority claimed from US372717A external-priority patent/US3858308A/en
Application filed by Bendix Corp filed Critical Bendix Corp
Publication of GB1436980A publication Critical patent/GB1436980A/en
Expired 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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2726—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of a single magnet or two or more axially juxtaposed single magnets
    • H02K1/2733—Annular magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets

Landscapes

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

Abstract

1436980 Dynamo-electric machines BENDIX CORP 24 June 1974 [22 June 1973 (2)] 27964/74 Heading H2A [Also in Division C7) A rotor assembly comprises an annular permanent magnet 40 of sintered cobalt-rare earth alloy mounted on a hub 20, there being between the magnet and hub a layer 30 of a material whose melting point is higher than the sintering temperature of the cobalt-rare earth alloy. During manufacture the cobalt-rare earth powder is sintered in position around the hub and the layer 30 serves to prevent migration of ferromagnetic material from the hub into the cobalt-rare earth powder which could degrade the magnetic properties of the sintered magnet. Suitable rare earth elements are samarium and praseodymium. The layer 30 is deposited on hub 20 prior to sintering of the powder and may be deposited by flame spraying, by vacuum deposition of by sputtering. The layer 30 may be made or an oxide of zirconium, magnesium, beryllium, titanium or aluminium. The hub 20 may be formed integrally with a shaft 10 or the shaft itself may serve as the hub, Fig. 3, (not shown). The rotor shown forms part of a generator having stator poles 71, alternate ones of which carry windings 73.
GB2796474A 1973-06-22 1974-06-24 Permanent magnet rotor assembly Expired GB1436980A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US372718A US3909647A (en) 1973-06-22 1973-06-22 Rotor assembly for permanent magnet generator
US372717A US3858308A (en) 1973-06-22 1973-06-22 Process for making a rotor assembly

Publications (1)

Publication Number Publication Date
GB1436980A true GB1436980A (en) 1976-05-26

Family

ID=27005888

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2796474A Expired GB1436980A (en) 1973-06-22 1974-06-24 Permanent magnet rotor assembly

Country Status (5)

Country Link
JP (1) JPS5036906A (en)
DE (1) DE2428744A1 (en)
FR (1) FR2234691B1 (en)
GB (1) GB1436980A (en)
IT (1) IT1015028B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1612913A3 (en) * 2004-06-29 2006-03-29 Nissan Motor Company, Limited Permanent magnet rotor of an axial gap motor and manufacturing method

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51109409A (en) * 1975-03-20 1976-09-28 Citizen Watch Co Ltd
JPS5239110A (en) * 1975-09-22 1977-03-26 Citizen Watch Co Ltd Rotor for electronic clock
JPS549305U (en) * 1977-06-23 1979-01-22
JPS549304U (en) * 1977-06-23 1979-01-22
JPS5453621U (en) * 1977-09-22 1979-04-13
DE2756626C2 (en) * 1977-12-19 1982-08-19 Philips Patentverwaltung Gmbh, 2000 Hamburg "Process for the production of a rotor for an electrical machine"
JPS58163255A (en) * 1982-03-24 1983-09-28 Okuma Mach Works Ltd Rotor for permanent magnet type synchronous motor
CH653520GA3 (en) * 1983-09-12 1986-01-15
JPS6251723A (en) * 1985-08-29 1987-03-06 Isuzu Motors Ltd Ultrahigh speed motor-generator
DE3534852A1 (en) * 1985-09-30 1987-04-02 Siemens Ag SINTER FERRITE MAGNET FOR ELECTRIC MOTOR DRIVES
CN102237734B (en) * 2010-04-23 2015-08-12 德昌电机(深圳)有限公司 A kind of motor
WO2015044949A2 (en) * 2013-09-25 2015-04-02 Tvs Motor Company Limited Electrical member for electrical machines
CN114000139B (en) * 2021-12-31 2022-03-18 常州市业峰汽车部件有限公司 Anticorrosion technology of aluminum alloy hub

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1612913A3 (en) * 2004-06-29 2006-03-29 Nissan Motor Company, Limited Permanent magnet rotor of an axial gap motor and manufacturing method
US7355311B2 (en) 2004-06-29 2008-04-08 Nissan Motor Co., Ltd. Rotor of axial gap motor and method of producing same
CN100442637C (en) * 2004-06-29 2008-12-10 日产自动车株式会社 Rotor of axial gap motor and method of producing same

Also Published As

Publication number Publication date
JPS5036906A (en) 1975-04-07
FR2234691B1 (en) 1976-12-24
FR2234691A1 (en) 1975-01-17
IT1015028B (en) 1977-05-10
DE2428744A1 (en) 1975-01-23

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee