EP2586117A2 - Fixation des aimants individuels d'une pièce de machine électrique - Google Patents

Fixation des aimants individuels d'une pièce de machine électrique

Info

Publication number
EP2586117A2
EP2586117A2 EP11716906.0A EP11716906A EP2586117A2 EP 2586117 A2 EP2586117 A2 EP 2586117A2 EP 11716906 A EP11716906 A EP 11716906A EP 2586117 A2 EP2586117 A2 EP 2586117A2
Authority
EP
European Patent Office
Prior art keywords
magnet
clamping
machine part
pocket
nose
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.)
Withdrawn
Application number
EP11716906.0A
Other languages
German (de)
English (en)
Inventor
Thomas Lott
Christian Meyer
Martin-Peter Bolz
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2586117A2 publication Critical patent/EP2586117A2/fr
Withdrawn legal-status Critical Current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
    • H02K1/274—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
    • H02K1/27—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
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures

Definitions

  • the present invention relates to a machine part for an electric machine, in particular a rotor or a stator of an electric motor, which is provided with at least one permanent magnet.
  • a rotor In an electrically commutated motor, a rotor is provided with a plurality of permanent magnets, which must be fixed as stable as possible in the rotor.
  • Such a rotor is usually formed as a spoke rotor, which comprises a package of mutually arranged rotor laminations.
  • the Rotorlamellenbleche are punched parts, in which each spoke-shaped recesses are arranged.
  • the spoke-shaped recesses are arranged one above the other in such a way that pockets for receiving the permanent magnets are formed.
  • the permanent magnets are fixed in the pockets by adhesive or by clamping lugs.
  • a machine part in particular a rotor or stator of an electric machine.
  • the machine part includes:
  • one of the lamination plates is formed with at least one clamping nose, which projects into the pocket and fixes the magnet in the pocket,
  • clamping nose is formed such that it is at least partially plastically deformed during insertion of the magnet.
  • the lamella plate, on which the clamping nose is formed differs from the other lamination plates.
  • only one lamellar plate with clamping lugs must be provided and standard parts can be used for the remaining lamella plates.
  • a plurality of clamping lugs is provided, in particular, an associated clamping nose can be provided for each pocket for receiving a respective magnet. This can ensure that each magnet of the machine part is fixed by its associated clamping nose in the associated pocket of the package.
  • the clamping nose can also be elastically deformed when the magnet is inserted, so that the magnet is fixed in the pocket by the elastic restoring force of the clamping nose. As a result, a particularly secure fixation of the magnet can be achieved.
  • the clamping nose tapers in the direction of its end facing the magnet.
  • the plastic and elastic deformability of the clamping lug can be adjusted such that the end facing the magnet during installation of the magnet can easily be plastically deformed and thus does not damage the surface of the magnet, while the remote from the magnet portion of the clamping lug not easily plastically deformable is and thus can fix the magnet in the bag by its elastic restoring force.
  • Clamping nose is provided with at least one notch.
  • the plastic and elastic deformability of different areas of the clamping nose can be adapted exactly to the requirements of a specific machine part to both damage the
  • Magnetic surface to avoid, as well as to achieve a secure attachment of the magnets in their associated pockets.
  • the at least one notch can be arranged in a region of the clamping nose, which is particularly strongly plastically deformed when the magnet is inserted, in order to purposefully increase the plastic deformability of the clamping nose in this area.
  • two notches may be provided, which are arranged opposite one another in such a way that the clamping nose has a constricted area.
  • This constricted area then faces the others Regions of the clamping nose increased plastic deformability, so that it can be ensured that the clamping nose is deformed particularly strong plastic in this area, when a magnet is inserted into the clamping nose associated pocket.
  • an electrically commutated motor which comprises a rotor as a machine part as described above.
  • Fig. 1 is a plan view of a spoke rotor prior to assembly of the magnets
  • FIG. 2 shows a cross section through a clamping nose and a magnet after installation of the magnet in the spoke rotor.
  • FIG. 3 shows an enlarged detail of the area marked A in FIG. 1 with a clamping nose according to an embodiment
  • FIG. 4 shows a modified embodiment of the clamping nose shown in FIG.
  • pockets 14 are formed, in which magnets 16 (see FIG. 2) can be accommodated.
  • clamping noses 18 are formed, which protrude into the pockets 14.
  • the insertion of a magnet 16 in a pocket 14, the associated clamping lug 18 is deformed.
  • both a plastic and an elastic deformation of the clamping lug 18 takes place.
  • the plastic deformation reduces the force acting on the surface of the magnet 16. Damage to the surface of the magnet 16 during the insertion or during operation of the electrically commutated motor can thus be avoided.
  • the clamping lug 18 is designed so that in the installed state of the magnet 16, one of the surfaces of the clamping lug 18 abuts at an acute angle or almost parallel to the magnet 16. This can be done in particular by the fact that the length of the clamping nose is chosen so that it protrudes into the pocket 14, so that it is bent during insertion of the magnet and correspondingly abuts the magnet 16 in a bent position.
  • the angle between the surface on which the clamping lug rests and the bent portion of the clamping lug should be less than 45 °, preferably less than 30 °. It can thereby be ensured that no excessively large force is exerted on a small area of the surface of the magnet 16 from one edge of the clamping nose 18. At the same time, the magnet 16 is held securely by the clamping nose 18 in the pocket 14.
  • a clamping nose 18 is formed so that it tapers toward an end portion. It can thereby be achieved that, in particular, the end region of the clamping nose 18 can easily be plastically and elastically deformed, so that the surface of the magnet 16 is not damaged during installation.
  • a second embodiment of a clamping nose 1 18 is shown in Fig. 4.
  • the clamping lug 1 18 is preferably formed integrally with a rotor lamination plate and is deformed when installing a magnet in the associated pocket of a spoke rotor, as shown in Fig. 2 for the clamping lug 18 according to the first embodiment.
  • a plurality of indentations 120, 122 are provided, which allow a central region of the clamping lug 1 18 has a smaller cross-section and thereby particularly It is simply plastically and elastically deformable.
  • two opposing notches 120, 122 may be provided, so that a constricted area arises.
  • only one notch per clamping nose 1 18 may be provided, or it may be provided several notches, which are not directly opposite each other.
  • the plastic and elastic deformability of the clamping lug 1 18 can be adjusted precisely for the respective combination of rotor core and magnet so that both damage to the surface of the magnet can be avoided, as well as a sufficient fixation the magnet is guaranteed in the pockets of the rotor package.

Landscapes

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

Abstract

L'invention concerne une pièce de machine (10), en particulier un rotor ou un stator d'une machine électrique. La pièce de machine (10) comprend un paquet (12) constitué d'une pluralité de tôles empilées, au moins un aimant (16) installé dans un logement (14) formé dans le paquet (12). Une des tôles est formée de manière à comporter au moins une languette de fixation (18) qui s'avance dans le logement (14) et fixe l'aimant (16) dans le logement (14), et la languette de fixation (18) est conçue pour être au moins en partie déformée plastiquement par l'aimant (16) lorsqu'elle est insérée.
EP11716906.0A 2010-06-22 2011-04-27 Fixation des aimants individuels d'une pièce de machine électrique Withdrawn EP2586117A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010030326 DE102010030326A1 (de) 2010-06-22 2010-06-22 Befestigung von Einzelmagneten eines Maschinenteils einer elektrischen Maschine
PCT/EP2011/056635 WO2011160872A2 (fr) 2010-06-22 2011-04-27 Fixation des aimants individuels d'une pièce de machine électrique

Publications (1)

Publication Number Publication Date
EP2586117A2 true EP2586117A2 (fr) 2013-05-01

Family

ID=44626078

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11716906.0A Withdrawn EP2586117A2 (fr) 2010-06-22 2011-04-27 Fixation des aimants individuels d'une pièce de machine électrique

Country Status (5)

Country Link
EP (1) EP2586117A2 (fr)
JP (1) JP2013529054A (fr)
CN (1) CN102948041A (fr)
DE (1) DE102010030326A1 (fr)
WO (1) WO2011160872A2 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011122023A1 (de) * 2011-12-23 2013-06-27 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Roboterblechpaket eines Elektromotors
JP6281147B2 (ja) * 2012-08-07 2018-02-21 日本電産株式会社 ロータおよびモータ
DE202013012708U1 (de) * 2013-03-19 2018-09-19 Ebm-Papst St. Georgen Gmbh & Co. Kg Elektromotor mit Innenrotor und Außenstator
JP2016163409A (ja) 2015-02-27 2016-09-05 日本電産株式会社 モータ
JP6464822B2 (ja) 2015-02-27 2019-02-06 日本電産株式会社 モータ
JP6683459B2 (ja) * 2015-11-05 2020-04-22 株式会社三井ハイテック 積層鉄心の製造方法
DE102016218540A1 (de) 2016-09-27 2018-03-29 BSH Hausgeräte GmbH Elektrischer Antriebsmotor
DE102017205847A1 (de) * 2017-04-06 2018-10-11 Bühler Motor GmbH Elektronisch kommutierter Gleichstrommotor und Verfahren zur Montage eines elektronisch kommutierten Gleichstrommotors
JP2019146448A (ja) * 2018-02-23 2019-08-29 日産自動車株式会社 回転子、及び、回転子を有する回転電機
CN108599422B (zh) * 2018-07-16 2020-04-10 珠海凌达压缩机有限公司 一种转子铁芯结构及压缩机
DE102018130270A1 (de) * 2018-11-29 2020-06-04 Schaeffler Technologies AG & Co. KG Aktor und Verfahren zum Zusammenbau eines Aktors
CN110829656A (zh) * 2019-11-25 2020-02-21 江苏朗信电气有限公司 一种无刷电机的转子组件
KR102868791B1 (ko) * 2020-09-04 2025-10-10 현대자동차주식회사 축방향 자속형 모터의 회전자
DE102021211341A1 (de) 2021-10-07 2023-04-13 Volkswagen Aktiengesellschaft Rotorpaket

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06133479A (ja) * 1992-09-02 1994-05-13 Toshiba Corp 永久磁石ロータ及びその製造装置
CN2527020Y (zh) * 2002-01-15 2002-12-18 引动节能科技股份有限公司 改进的电动机转子磁材的固定结构
DE102007029719A1 (de) * 2007-02-01 2008-08-07 Robert Bosch Gmbh Elektrische Maschine
DE102007036315A1 (de) * 2007-07-31 2009-02-05 Robert Bosch Gmbh Lamellenpaket für einen Rotor oder Stator einer elektrischen Maschine und entsprechende elektrische Maschine
DE102008043138A1 (de) * 2008-10-23 2010-04-29 Robert Bosch Gmbh Lamellenpaket eines Rotors einer elektrischen Maschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011160872A2 *

Also Published As

Publication number Publication date
DE102010030326A1 (de) 2011-12-22
WO2011160872A2 (fr) 2011-12-29
JP2013529054A (ja) 2013-07-11
WO2011160872A3 (fr) 2012-10-11
CN102948041A (zh) 2013-02-27

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