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GB2007146A - Injection Moulding a Hub within a Frangible Ceramic Rotor Ring - Google Patents

Injection Moulding a Hub within a Frangible Ceramic Rotor Ring

Info

Publication number
GB2007146A
GB2007146A GB7841526A GB7841526A GB2007146A GB 2007146 A GB2007146 A GB 2007146A GB 7841526 A GB7841526 A GB 7841526A GB 7841526 A GB7841526 A GB 7841526A GB 2007146 A GB2007146 A GB 2007146A
Authority
GB
United Kingdom
Prior art keywords
ring
hub
injection
injection moulding
tubular member
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.)
Granted
Application number
GB7841526A
Other versions
GB2007146B (en
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.)
BSR Ltd
Original Assignee
BSR 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 BSR Ltd filed Critical BSR Ltd
Publication of GB2007146A publication Critical patent/GB2007146A/en
Application granted granted Critical
Publication of GB2007146B publication Critical patent/GB2007146B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14836—Preventing damage of inserts during injection, e.g. collapse of hollow inserts, breakage
    • 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
    • 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
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/03—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14598—Coating tubular articles
    • B29C45/14622—Lining the inner or outer surface of tubular articles

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

An electric induction motor rotor comprises a ring 11 of ceramic magnetic or magnetisable material, carried by a rotor shaft 10 at a hub 12 which has been injection moulded into position between the ring 11 and shaft 10. To avoid bursting of the ring 11 under the injection pressure or thermal stress, it is either injection moulded from a plastics structural form e.g. of A.B.S., which foams in the injection die against the ring, Fig. 1, or from plastics or low melting metal alloy within a tubular member 114, Fig. 3, which is located around the inner periphery of the ring 11. The tubular member is preferably resilient and comprises either a tube formed by bending and overlapping the ends of a corrugated spring steel strip, or comprises a close coil tubular spring. The injected hub may comprise radial spokes. <IMAGE>
GB7841526A 1977-10-22 1978-10-23 Rotors for electrical machines Expired GB2007146B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4404177 1977-10-22

Publications (2)

Publication Number Publication Date
GB2007146A true GB2007146A (en) 1979-05-16
GB2007146B GB2007146B (en) 1982-05-06

Family

ID=10431487

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7841526A Expired GB2007146B (en) 1977-10-22 1978-10-23 Rotors for electrical machines

Country Status (7)

Country Link
JP (1) JPS5475015A (en)
BE (1) BE871410A (en)
DE (1) DE2845251A1 (en)
FR (1) FR2408936A1 (en)
GB (1) GB2007146B (en)
IT (1) IT7869416A0 (en)
NL (1) NL7810568A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0175903A1 (en) * 1984-08-27 1986-04-02 Hitachi, Ltd. Torque motor
GB2188159A (en) * 1986-03-19 1987-09-23 Honda Motor Co Ltd Angle-of-rotation sensor
GB2196287A (en) * 1986-03-19 1988-04-27 Honda Motor Co Ltd Method of manufacturing angle-of-rotation sensor
EP0547767A1 (en) * 1991-11-21 1993-06-23 Mabuchi Motor Kabushiki Kaisha A rotor for rotary electrical machinery
EP0650241A1 (en) * 1993-10-22 1995-04-26 Johnson Electric S.A. Permanent magnet rotor
US5731648A (en) * 1995-11-02 1998-03-24 Globe Motors Laminated rotor core for mounting permanent ring magnets
EP0802340A3 (en) * 1996-04-17 2000-04-19 Rauschert GmbH &amp; Co. KG Ceramic part
EP1156574A3 (en) * 2000-05-17 2004-01-02 Fujitsu General Limited Rotor of electric motor and method for manufacturing the same
EP1473816A1 (en) * 2003-04-29 2004-11-03 Robert Bosch Gmbh Permanent magnet and its fixation in an electric machine
EP1380093A4 (en) * 2001-03-24 2006-08-09 Lg Electronics Inc Mover assembly of reciprocating motor and fabrication method thereof
EP3598609A4 (en) * 2017-03-16 2021-01-06 LG Electronics Inc. ELECTRIC MOTOR HAVING A PERMANENT MAGNET AND COMPRESSOR INCLUDING THIS
USD951040S1 (en) * 2019-10-28 2022-05-10 Fiskars Finland Oy Ab Pruner

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2845702C2 (en) * 1978-10-20 1983-01-20 Nsm-Apparatebau Gmbh Kg, 6530 Bingen Method for manufacturing a rotor for a small electric motor
JPS5841072U (en) * 1981-09-09 1983-03-18 日立金属株式会社 magnet rotor
JPH0757074B2 (en) * 1985-10-22 1995-06-14 ティーディーケイ株式会社 Magnet rotor
JPH0736675B2 (en) * 1986-10-29 1995-04-19 ティーディーケイ株式会社 Magnet rotor and manufacturing method thereof
JPS6447249A (en) * 1988-01-12 1989-02-21 Tdk Corp Metal component for rotor magnet
CN102386725B (en) * 2011-10-20 2013-06-12 浙江海宏电器有限公司 Pressure type special push broach for motor rotor
DE102011054955B4 (en) * 2011-10-31 2025-10-02 Minebea Mitsumi Inc. Rotor assembly of a DC motor
DE102011088540A1 (en) * 2011-12-14 2013-06-20 Bayerische Motoren Werke Aktiengesellschaft Permanent magnet-energized electric machine e.g. hybrid synchronous electric motor has expanding material structure which is arranged between wall of the receiving spaces and permanent magnet
JP5895920B2 (en) * 2013-10-24 2016-03-30 株式会社デンソー Rotor for rotating electrical machine and method for manufacturing the same

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0175903A1 (en) * 1984-08-27 1986-04-02 Hitachi, Ltd. Torque motor
GB2188159A (en) * 1986-03-19 1987-09-23 Honda Motor Co Ltd Angle-of-rotation sensor
GB2196287A (en) * 1986-03-19 1988-04-27 Honda Motor Co Ltd Method of manufacturing angle-of-rotation sensor
GB2196287B (en) * 1986-03-19 1989-11-15 Honda Motor Co Ltd Method of manufacturing angle-of-rotation sensor
GB2188159B (en) * 1986-03-19 1990-05-30 Honda Motor Co Ltd Angle-of-rotation sensor
EP0547767A1 (en) * 1991-11-21 1993-06-23 Mabuchi Motor Kabushiki Kaisha A rotor for rotary electrical machinery
CN1065678C (en) * 1993-10-22 2001-05-09 德昌电机股份有限公司 Permanent magnet rotor
EP0650241A1 (en) * 1993-10-22 1995-04-26 Johnson Electric S.A. Permanent magnet rotor
US5528095A (en) * 1993-10-22 1996-06-18 Johnson Electric S.A. Permanent magnet rotor
US5731648A (en) * 1995-11-02 1998-03-24 Globe Motors Laminated rotor core for mounting permanent ring magnets
EP0802340A3 (en) * 1996-04-17 2000-04-19 Rauschert GmbH &amp; Co. KG Ceramic part
EP1156574A3 (en) * 2000-05-17 2004-01-02 Fujitsu General Limited Rotor of electric motor and method for manufacturing the same
EP1380093A4 (en) * 2001-03-24 2006-08-09 Lg Electronics Inc Mover assembly of reciprocating motor and fabrication method thereof
US8049374B2 (en) 2001-03-24 2011-11-01 Lg Electronics Inc. Mover assembly of reciprocating motor
EP1473816A1 (en) * 2003-04-29 2004-11-03 Robert Bosch Gmbh Permanent magnet and its fixation in an electric machine
EP3598609A4 (en) * 2017-03-16 2021-01-06 LG Electronics Inc. ELECTRIC MOTOR HAVING A PERMANENT MAGNET AND COMPRESSOR INCLUDING THIS
US11532967B2 (en) 2017-03-16 2022-12-20 Lg Electronics Inc. Electric motor having permanent magnet and compressor including an electric motor
USD951040S1 (en) * 2019-10-28 2022-05-10 Fiskars Finland Oy Ab Pruner

Also Published As

Publication number Publication date
IT7869416A0 (en) 1978-10-20
NL7810568A (en) 1979-04-24
BE871410A (en) 1979-02-15
DE2845251A1 (en) 1979-04-26
FR2408936A1 (en) 1979-06-08
GB2007146B (en) 1982-05-06
JPS5475015A (en) 1979-06-15

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Legal Events

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