IN2014KO00770A - - Google Patents

Info

Publication number
IN2014KO00770A
IN2014KO00770A IN770KO2014A IN2014KO00770A IN 2014KO00770 A IN2014KO00770 A IN 2014KO00770A IN 770KO2014 A IN770KO2014 A IN 770KO2014A IN 2014KO00770 A IN2014KO00770 A IN 2014KO00770A
Authority
IN
India
Prior art keywords
lamination
tab
lamination sheets
slot
recess
Prior art date
Application number
Inventor
L Kaiser Edward
Buchholz Paul
Original Assignee
Gm Global Tech Operations Inc
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 Gm Global Tech Operations Inc filed Critical Gm Global Tech Operations Inc
Publication of IN2014KO00770A publication Critical patent/IN2014KO00770A/en

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
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned 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
    • 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
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

A rotor assembly for an electric machine includes a plurality of lamination sheets. Each of the lamination sheets defines an aperture. The lamination sheets are disposed adjacent each other to define a laminated stack. The apertures are aligned with each other to define a slot extending parallel with a central axis of the laminated stack. A magnet is disposed within the slot. The lamination sheets include a group of recess lamination sheets and a tab lamination sheet. The tab lamination sheet includes a tab that extends into the slot, and into abutting engagement with the magnet to bias the magnet against a wall of the slot. The apertures of the group of recess lamination sheets include a groove portion that defines a groove. The tab of the tab lamination sheet is at least partially disposed within the groove defined by the recess lamination sheets.
IN770KO2014 2013-10-23 2014-07-18 IN2014KO00770A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14/061,173 US9621001B2 (en) 2013-10-23 2013-10-23 Rotor assembly for electric machine having mechanical retention system for magnets

Publications (1)

Publication Number Publication Date
IN2014KO00770A true IN2014KO00770A (en) 2015-04-24

Family

ID=52775359

Family Applications (1)

Application Number Title Priority Date Filing Date
IN770KO2014 IN2014KO00770A (en) 2013-10-23 2014-07-18

Country Status (4)

Country Link
US (1) US9621001B2 (en)
CN (1) CN104578495B (en)
DE (1) DE102014115230A1 (en)
IN (1) IN2014KO00770A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6761762B2 (en) * 2017-01-27 2020-09-30 株式会社三井ハイテック Rotor laminated iron core and its manufacturing method
WO2018189822A1 (en) * 2017-04-12 2018-10-18 三菱電機株式会社 Ipm rotor
CN110266156B (en) * 2019-07-01 2020-07-21 东风博泽汽车***有限公司 Automatic pre-bending device and method for motor rotor iron core
US11264850B2 (en) * 2019-09-05 2022-03-01 Nidec Motor Corporation Laminated rotor having deflecting magnet retaining prongs and support posts for the prongs
US11133724B2 (en) * 2019-09-24 2021-09-28 GM Global Technology Operations LLC Rotor with compressive structural elements
US11646616B2 (en) 2020-02-04 2023-05-09 Nidec Motor Corporation Laminated spoked rotor with mechanical magnet retention
JP2021164174A (en) * 2020-03-30 2021-10-11 日本電産株式会社 Rotor for IPM motor
CN113572285A (en) * 2020-04-29 2021-10-29 广东德昌电机有限公司 Permanent magnet excitation assembly and assembling method thereof
TWI791292B (en) * 2021-09-24 2023-02-01 日商日本電產股份有限公司 Rotors for Internal Permanent Magnet Motors

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3659129A (en) * 1970-09-15 1972-04-25 Gen Electric Insulated bar dynamoelectric machine and method of forming
US4168792A (en) * 1978-05-26 1979-09-25 Morin Edward A Needle for tatting
JPS6077647A (en) * 1983-10-03 1985-05-02 Mitsui Haitetsuku:Kk Manufacture of laminated core
JP2003235189A (en) * 2002-02-04 2003-08-22 Toyota Motor Corp Magnet retaining structure for rotor of rotating electric machine
BRPI0402303A (en) * 2004-06-07 2006-01-17 Brasil Compressores Sa Process of mounting magnets on electric motor rotor and electric motor rotor
US7919898B2 (en) * 2007-06-21 2011-04-05 Nidec Motor Corporation Rotor core assembly for electric motor
JP2009077588A (en) * 2007-09-21 2009-04-09 Denso Corp Ac generator for vehicle
JP5327692B2 (en) * 2008-03-12 2013-10-30 日本電産株式会社 Motor and method for manufacturing rotor part of motor
US8089189B2 (en) * 2009-06-23 2012-01-03 Hamilton Sundstrand Corporation Rotor for permanent magnet electric machine
CN102577032A (en) * 2009-10-22 2012-07-11 Tm4股份有限公司 Permanent magnet rotor assembly provided with welded magnet retaining elements
ES2770436T3 (en) * 2011-07-22 2020-07-01 Ebm-Papst St Georgen Gmbh & Co Kg Internal rotor motor
EP2557661B1 (en) * 2011-08-10 2020-03-11 LG Innotek Co., Ltd. Rotor core of motor
US9099897B2 (en) * 2011-09-13 2015-08-04 L.H. Carbide Corporation Method for connecting end sections of an annular laminated article and articles made therefrom
DE102011122023A1 (en) * 2011-12-23 2013-06-27 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Robot sheet package of an electric motor

Also Published As

Publication number Publication date
US9621001B2 (en) 2017-04-11
CN104578495A (en) 2015-04-29
US20150108866A1 (en) 2015-04-23
DE102014115230A1 (en) 2015-04-23
CN104578495B (en) 2017-12-15

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