WO2020012420A3 - Spritzgegossener magnethalter für einen bürstenlosen elektromotor - Google Patents

Spritzgegossener magnethalter für einen bürstenlosen elektromotor Download PDF

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Publication number
WO2020012420A3
WO2020012420A3 PCT/IB2019/055946 IB2019055946W WO2020012420A3 WO 2020012420 A3 WO2020012420 A3 WO 2020012420A3 IB 2019055946 W IB2019055946 W IB 2019055946W WO 2020012420 A3 WO2020012420 A3 WO 2020012420A3
Authority
WO
WIPO (PCT)
Prior art keywords
rotor core
shaft section
magnet holder
electric motor
radial direction
Prior art date
Application number
PCT/IB2019/055946
Other languages
English (en)
French (fr)
Other versions
WO2020012420A2 (de
Inventor
Pascual GUARDIOLA
Original Assignee
Nidec Corporation
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 DE102019118646.3A external-priority patent/DE102019118646A1/de
Application filed by Nidec Corporation filed Critical Nidec Corporation
Priority to US17/259,799 priority Critical patent/US20220200379A1/en
Priority to CN201980046760.7A priority patent/CN112400269A/zh
Publication of WO2020012420A2 publication Critical patent/WO2020012420A2/de
Publication of WO2020012420A3 publication Critical patent/WO2020012420A3/de

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
    • 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
    • H02K1/278—Surface mounted magnets; Inset 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
    • H02K1/27—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]
    • 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
    • H02K1/2773—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect consisting of tangentially magnetized radial 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—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)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

Die Erfindung betrifft eine Rotoreinheit (1) für einen bürstenlosen Elektromotor aufweisend : - einen ringförmigen Rotorkern (3), der eine Mittelachse (2) umgibt, - einer Mehrzahl von Magnetanordnungen, die in einer Umfangsrichtung der Rotoreinheit (1) um den Rotorkern (3) herum angeordnet sind, und die jeweils eine konvexe äußere Umfangsfläche (16), eine innere Anlagefläche (8), zwei axiale Stirnseiten (12) und zwei in Radialrichtung weisende Seitenflächen (10, 11) aufweisen, - einen an den Rotorkern (3) einteilig angespritzten Magnethalter (21), der eine Anzahl von in Umfangsrichtung gleichmäßig beabstandeten Halteabschnitten (20) aufweist, die jeweils zwischen zwei benachbarten Magnetanordnungen angeordnet sind, wobei die Halteabschnitte jeweils einen Schaftabschnitt und einen Kopfabschnitt (23) aufweisen, wobei der Schaftabschnitt in Umfangsrichtung zwischen den Magnetanordnungen liegt und der Kopfabschnitt an einem Ende des Schaftabschnitts ausgebildet ist, wobei der Kopfabschnitt den Schaftabschnitt in Radialrichtung, nach innen zum Rotorkern hin überragt und in eine korrespondierende Ausnehmung (26) des Rotorkerns (3), die im Bereich der Stirnfläche des Rotorkerns (3) angeordnet ist, eingreift und somit den Magnethalter an dem Rotorkern in Radialrichtung befestigt.
PCT/IB2019/055946 2018-07-13 2019-07-12 Spritzgegossener magnethalter für einen bürstenlosen elektromotor WO2020012420A2 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US17/259,799 US20220200379A1 (en) 2018-07-13 2019-07-12 Injection-molded magnet holder for a brushless electric motor
CN201980046760.7A CN112400269A (zh) 2018-07-13 2019-07-12 注塑成型的无刷电动机用磁体保持件

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102018116986.8 2018-07-13
DE102018116986 2018-07-13
DE102019118646.3A DE102019118646A1 (de) 2018-07-13 2019-07-10 Spritzgegossener Magnethalter für einen bürstenlosen Elektromotor
DE102019118646.3 2019-07-10

Publications (2)

Publication Number Publication Date
WO2020012420A2 WO2020012420A2 (de) 2020-01-16
WO2020012420A3 true WO2020012420A3 (de) 2020-03-19

Family

ID=67989029

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2019/055946 WO2020012420A2 (de) 2018-07-13 2019-07-12 Spritzgegossener magnethalter für einen bürstenlosen elektromotor

Country Status (2)

Country Link
US (1) US20220200379A1 (de)
WO (1) WO2020012420A2 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230137883A1 (en) * 2020-02-27 2023-05-04 Lg Innotek Co., Ltd. Motor
US11909268B2 (en) 2021-03-11 2024-02-20 ZF Active Safety US Inc. Integrated rotor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6078121A (en) * 1997-02-21 2000-06-20 Emerson Electric Co. Rotor assembly for a rotating machine
US20110291498A1 (en) * 2009-02-09 2011-12-01 Takatoshi Sakata Electric Motor and Rotor
US20130257184A1 (en) * 2011-04-02 2013-10-03 Nidec Corporation Rotor unit, rotating electrical machine, and method for manufacturing rotor unit
JP2014187828A (ja) * 2013-03-25 2014-10-02 Mitsuba Corp モータ用ロータ、ブラシレスモータ及びモータ用ロータの製造方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1780870B1 (de) 2004-07-16 2018-09-05 Mitsuba Corporation Magnetfixierungsstruktur für eine elektrische drehmaschine
JP6008228B2 (ja) 2011-12-26 2016-10-19 日本電産株式会社 モータ
JP6128419B2 (ja) * 2013-01-15 2017-05-17 日本電産株式会社 回転電機
DE202018006077U1 (de) * 2018-03-07 2019-02-20 Nidec Corporation Rotoreinheit und Elektromotor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6078121A (en) * 1997-02-21 2000-06-20 Emerson Electric Co. Rotor assembly for a rotating machine
US20110291498A1 (en) * 2009-02-09 2011-12-01 Takatoshi Sakata Electric Motor and Rotor
US20130257184A1 (en) * 2011-04-02 2013-10-03 Nidec Corporation Rotor unit, rotating electrical machine, and method for manufacturing rotor unit
JP2014187828A (ja) * 2013-03-25 2014-10-02 Mitsuba Corp モータ用ロータ、ブラシレスモータ及びモータ用ロータの製造方法

Also Published As

Publication number Publication date
WO2020012420A2 (de) 2020-01-16
US20220200379A1 (en) 2022-06-23

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