WO2007006696A1 - Magnet block with an anti-corrosion coating and use in electric motors - Google Patents

Magnet block with an anti-corrosion coating and use in electric motors Download PDF

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Publication number
WO2007006696A1
WO2007006696A1 PCT/EP2006/063873 EP2006063873W WO2007006696A1 WO 2007006696 A1 WO2007006696 A1 WO 2007006696A1 EP 2006063873 W EP2006063873 W EP 2006063873W WO 2007006696 A1 WO2007006696 A1 WO 2007006696A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnet
magnets
block
individual
corrosion protection
Prior art date
Application number
PCT/EP2006/063873
Other languages
German (de)
French (fr)
Inventor
Bernhard Klaussner
Irene Olbrich
Joachim Risse
Hartmut Vogel
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2007006696A1 publication Critical patent/WO2007006696A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0205—Magnetic circuits with PM in general
    • H01F7/0221—Mounting means for PM, supporting, coating, encapsulating PM
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/026—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets protecting methods against environmental influences, e.g. oxygen, by surface treatment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/04—Details of the magnetic circuit characterised by the material used for insulating the magnetic circuit or parts thereof
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)
    • 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

Definitions

  • the invention relates to block magnets having a structure of A ⁇ zelmagneten.
  • Block magnets are segmented by individual magnets due to eddy current losses.
  • the partial magnets are connected to one another ei ⁇ nem block magnet.
  • the block magnet is then coated with a corrosion protection and as ⁇ used by example in a rotor of an electrical machine.
  • the disadvantage here is that the coating is damaged by the mechanical fixation of the partial magnets, so that a corrosion of the magnets begins.
  • the object of the invention is to provide a block magnet arrangement which is resistant to mechanical injury as well as having integral connections of the partial magnets.
  • FIG 1.7 Schematic representation of a block magnet 2 simplified representation of an electric machine
  • FIG. 1 shows a juxtaposition of individual magnets 1, which each have a corrosion protection layer 2 and are connected to one another by a suitable bonding process by an adhesive layer 3 and thereby form a block magnet 4.
  • block magnets 4 can be built up, e.g. in Ta- see or recesses of rotors 8 electrical machines can be used.
  • each individual magnet 1 is now protected by its own corrosion protection layer 2.
  • the corrosion protection layer can be formed by lacquer.
  • the corrosion protection layer is formed by plastic injection molding, in which the individual magnets 1 are embedded. At the edges of the embedded individual magnets 1 fastening tabs 20 can be sprayed on in a same operation, which allow a fixation of the individual magnets 1 to each other to a block magnet 4 and / or attachment to a rotor 8.
  • FIG. 7 shows, by way of example, two individual magnets 1, such as the fastening plates. see 20 can be arranged. You can be rigid or movable 1, for example, connected via a not-shown film hinge with the single magnet 1. The fixation of the individual magnets 1 and the block magnet 4 is done via known attachment techniques.
  • the block magnet 4 can be used as a buried magnet or as a surface magnet in a corresponding rotor 8.
  • FIG. 2 shows a schematic representation of an electrical machine with a stator 9 and a rotor 8, which is located in a housing 7, which is bounded by the bearing plates 14. At the end faces of the stator 9 winding heads 11 protrude axially.
  • a shaft 5 is sitioned by bearing 6 in the bearing plate 14 po ⁇ .
  • the rotor 8 is shown with its laminated core, which is shrunk onto a shaft 5.
  • different block magnets 4 are arranged according to in the circumferential direction of the rotor. If the block magnets 4 are not arranged on the outer circumference of the rotor 8, they are located in axially extending recesses 15 which are both flat and curved or arranged obliquely.
  • block magnets 4 gen 8 anlie ⁇ on the outer periphery of the rotor, a bandage and / or an adhesive bond is provided for fixing the block magnets 4 on the surface.
  • these surface magnets are held solely by the individual magnets is 1 ⁇ cast attachment lugs 20 on the rotor. 8 A use of bandages or adhesive to fix the block magnets 4 is no longer necessary.
  • the individual magnets 1 in this case have the known Magne ⁇ thnesraumen on, such as axial, axially sektorenför- mig diametrically radially etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

To prevent the corrosion of magnet blocks (4), the invention provides a magnet block (4), which is configured from individual magnets (1). Each individual magnet (1) has an anti-corrosion coating and the bonded individual magnets (1) form the magnet block (4). Said magnet blocks (4) can be used in particular in electric motors (1).

Description

Beschreibungdescription
Blockmagnet mit Korrosionsschutz und Anwendung bei elektrischen MaschinenBlock magnet with corrosion protection and application in electrical machines
Die Erfindung betrifft Blockmagnete mit einem Aufbau aus Ein¬ zelmagneten .The invention relates to block magnets having a structure of A ¬ zelmagneten.
Blockmagnete werden aufgrund Wirbelstromverluste segmentiert durch Einzelmagnete aufgebaut. Die Teilmagnete werden zu ei¬ nem Blockmagnet miteinander verbunden. Der Blockmagnet wird anschließend mit einem Korrosionsschutz beschichtet und da¬ nach z.B. in einen Rotor einer elektrischen Maschine eingesetzt .Block magnets are segmented by individual magnets due to eddy current losses. The partial magnets are connected to one another ei ¬ nem block magnet. The block magnet is then coated with a corrosion protection and as ¬ used by example in a rotor of an electrical machine.
So ist z.B. aus der US 6 800 967 B2 eine Magnetanordnung für elektrische Maschinen bekannt, die jeweils beschichtet sind und durch eine Bandage zusammengehalten werden.For example, e.g. from US Pat. No. 6,800,967 B2 discloses a magnet arrangement for electrical machines, which are each coated and held together by a bandage.
Nachteilig dabei ist, dass durch die mechanische Fixierung der Teilmagnete die Beschichtung verletzt wird, so dass eine Korrosion der Magnete einsetzt.The disadvantage here is that the coating is damaged by the mechanical fixation of the partial magnets, so that a corrosion of the magnets begins.
Ausgehend davon liegt der Erfindung die Aufgabe zugrunde, ei- ne Blockmagnetanordnung zu schaffen, die sowohl gegenüber mechanischen Verletzung resistent ist, als auch stoffschlüssige Verbindungen der Teilmagnete aufweist.Proceeding from this, the object of the invention is to provide a block magnet arrangement which is resistant to mechanical injury as well as having integral connections of the partial magnets.
Die Lösung der gestellten Aufgabe gelingt durch Blockmagnete die durch Einzelmagnete aufgebaut sind und wobei jeder Ein¬ zelmagnet einen Korrosionsschutz aufweist und die Einzelmag¬ nete verklebt den Blockmagnet ergeben.The solution of the problem is achieved by block magnets which are constructed by individual magnets and each Ein ¬ zelmagnet has a corrosion protection and the Einzelmag ¬ nete glued give the block magnet.
Zur Verbesserung des Korrosionsschutzes der Teilmagnete wer- den nunmehr zuerst die Teilmagnete beschichtet und anschlie¬ ßend miteinander zu einem Blockmagnet verklebt. Somit erhält jeder Teilmagnet seinen eigenen kompletten Korrosionsschutz. Das Risiko zur Sicherstellung einer äußeren Spaltabschottung der bisherigen Flächen tritt nicht mehr auf. Eine Gesamtbe¬ schichtung auf Gründen des Korrosionsschutzes des Blockmag¬ nets kann entfallen.In order to improve the corrosion protection of the component magnets ¬ now first coated the partial magnets and subsequently advertising ßend glued together to form a block magnet. Thus, each part magnet gets its own complete corrosion protection. The risk of ensuring an outer Spaltabschottung the previous areas no longer appears. A Gesamtbe ¬ coating on grounds of corrosion protection of Blockmag ¬ net can be omitted.
Die Erfindung wird in einer schematisch dargestellten Ausführung näher erläutert. Darin zeigen:The invention will be explained in more detail in a schematically illustrated embodiment. Show:
FIG 1,7 Prinzipdarstellung eines Blockmagneten FIG 2 vereinfachte Darstellung einer elektrischen MaschineFIG 1.7 Schematic representation of a block magnet 2 simplified representation of an electric machine
FIG 3 bis 6 Anordnungen von Blockmagneten in Rotoren3 to 6 arrangements of block magnets in rotors
FIG 1 zeigt eine Aneinanderreihung von Einzelmagneten 1, die jeweils eine Korrosionsschutzschicht 2 aufweisen und mitein- ander durch einen geeigneten Klebevorgang durch eine Klebeschicht 3 verbunden sind und dadurch einen Blockmagneten 4 bilden .1 shows a juxtaposition of individual magnets 1, which each have a corrosion protection layer 2 and are connected to one another by a suitable bonding process by an adhesive layer 3 and thereby form a block magnet 4.
Es sind somit Blockmagnete 4 aufbaubar, die sich z.B. in Ta- sehen oder Ausnehmungen von Rotoren 8 elektrischer Maschinen einsetzen lassen.Thus block magnets 4 can be built up, e.g. in Ta- see or recesses of rotors 8 electrical machines can be used.
Vorteilhafterweise wird nunmehr jeder Einzelmagnet 1 durch seine eigene Korrosionsschutzschicht 2 geschützt. Eine Ver- letzung der Gesamtkorrosionsabdeckung eines herkömmlichen Blockmagnetes 4 durch beispielsweise einen Spalt, die eine Gesamtkorrosion des Blockmagnets 4 auf diesem Weg herbeiführen konnte, ist damit vermieden.Advantageously, each individual magnet 1 is now protected by its own corrosion protection layer 2. A violation of the total corrosion coverage of a conventional block magnet 4 by, for example, a gap, which could bring about an overall corrosion of the block magnet 4 in this way, is thus avoided.
Die Korrosionsschutzschicht kann durch Lack gebildet werden. Vorteilhafterweise wird die Korrosionsschutzschicht durch Kunststoffspritzguss gebildet, in die die Einzelmagnete 1 eingebettet sind. An den Kanten der eingebetteten Einzelmagnete 1 lassen sich in einem gleichen Arbeitsgang Befesti- gungslaschen 20 anspritzen, die eine Fixierung der Einzelmagnete 1 untereinander zu einem Blockmagnet 4 und/oder eine Befestigung an einem Rotor 8 gestatten. FIG 7 zeigt dabei beispielhaft an zwei Einzelmagneten 1, wie die Befestigungsla- sehen 20 angeordnet sein können. Sie können starr oder auch beweglich 1 z.B. über ein nicht näher dargestelltes Filmscharnier mit dem Einzelmagnet 1 verbunden sein. Die Fixierung der Einzelmagnete 1 bzw. des Blockmagnets 4 geschieht über an sich bekannte Befestigungstechniken. Der Blockmagnet 4 ist dabei als vergrabener Magnet oder als Oberflächenmagnet bei einem dementsprechenden Rotor 8 einsetzbar.The corrosion protection layer can be formed by lacquer. Advantageously, the corrosion protection layer is formed by plastic injection molding, in which the individual magnets 1 are embedded. At the edges of the embedded individual magnets 1 fastening tabs 20 can be sprayed on in a same operation, which allow a fixation of the individual magnets 1 to each other to a block magnet 4 and / or attachment to a rotor 8. FIG. 7 shows, by way of example, two individual magnets 1, such as the fastening plates. see 20 can be arranged. You can be rigid or movable 1, for example, connected via a not-shown film hinge with the single magnet 1. The fixation of the individual magnets 1 and the block magnet 4 is done via known attachment techniques. The block magnet 4 can be used as a buried magnet or as a surface magnet in a corresponding rotor 8.
FIG 2 zeigt in prinzipieller Darstellung eine elektrische Ma- schine mit einem Stator 9 und einem Rotor 8, der in einem Gehäuse 7, das durch die Lagerschilde 14 begrenzt ist befindet. An den Stirnseiten des Stators 9 ragen Wickelköpfe 11 axial hervor. Eine Welle 5 ist durch Lager 6 im Lagerschild 14 po¬ sitioniert. In FIG 2 ist der Rotor 8 mit seinem Blechpaket dargestellt, der auf eine Welle 5 aufgeschrumpft ist. Bei¬ spielhaft sind gemäß der FIG 3 bis 6 in Umfangsrichtung des Rotors 8 verschiedene Blockmagnete 4 angeordnet. Falls die Blockmagnete 4 nicht am Außenumfang des Rotors 8 angeordnet sind, befinden sie sich in axial verlaufenden Ausnehmungen 15 die sowohl eben als auch gekrümmt oder schräg angeordnet sind.2 shows a schematic representation of an electrical machine with a stator 9 and a rotor 8, which is located in a housing 7, which is bounded by the bearing plates 14. At the end faces of the stator 9 winding heads 11 protrude axially. A shaft 5 is sitioned by bearing 6 in the bearing plate 14 po ¬. In Figure 2, the rotor 8 is shown with its laminated core, which is shrunk onto a shaft 5. In ¬ way of example of the Figures 3 to 6 8 different block magnets 4 are arranged according to in the circumferential direction of the rotor. If the block magnets 4 are not arranged on the outer circumference of the rotor 8, they are located in axially extending recesses 15 which are both flat and curved or arranged obliquely.
Falls die Blockmagnete 4 am Außenumfang des Rotors 8 anlie¬ gen, ist eine Bandage und/oder eine Verklebung zur Fixierung der Blockmagnete 4 auf der Oberfläche vorgesehen.If the block magnets 4 gen 8 anlie ¬ on the outer periphery of the rotor, a bandage and / or an adhesive bond is provided for fixing the block magnets 4 on the surface.
Dabei ist ein Spezialkleber vorzusehen, der die unterschiedlichen Wärmedehnungen von Magnet und Rotor 8 ausgleichen kann .In this case, a special adhesive is provided, which can compensate for the different thermal expansion of the magnet and rotor 8.
In einer anderen vorteilhaften Ausführungsform werden diese Oberflächenmagnete allein durch an die Einzelmagnete 1 ange¬ gossene Befestigungslaschen 20 am Rotor 8 gehalten. Ein Einsatz von Bandagen oder Kleber zur Fixierung der Blockmagnete 4 ist nicht mehr notwendig.In another advantageous embodiment, these surface magnets are held solely by the individual magnets is 1 ¬ cast attachment lugs 20 on the rotor. 8 A use of bandages or adhesive to fix the block magnets 4 is no longer necessary.
Damit lassen sich in einfacher Art und Weise ein modularer Aufbau eines Rotors 8 realisieren, was u.a. gegebenenfalls in einem Reparaturfall äußerst vorteilhaft ist, da eine Bandage oder ein Kleber nicht entfernt werden muss.This can be a simple way to realize a modular design of a rotor 8, which, inter alia, optionally in a repair case is extremely advantageous because a bandage or adhesive does not need to be removed.
Die Einzelmagnete 1 weisen dabei die an sich bekannten Magne¬ tisierungsrichtungen auf, wie z.B. axial, axial sektorenför- mig, diametral, radial etc. The individual magnets 1 in this case have the known Magne ¬ tisierungsrichtungen on, such as axial, axially sektorenför- mig diametrically radially etc.

Claims

Patentansprüche claims
1. Blockmagnet (4), der durch Einzelmagnete (1) aufgebaut ist und wobei jeder Einzelmagnet (1) eine Korrosionsschutzschicht (2) aufweist und die Einzelmagnete (1) verklebt den Blockmag¬ net (4) ergeben.1. block magnet (4), which is constructed by individual magnets (1) and wherein each individual magnet (1) has a corrosion protection layer (2) and the individual magnets (1) glued the Blockmag ¬ net (4) result.
2. Blockmagnet (4) nach Anspruch 1, d a d u r c h g e ¬ k e n n z e i c h n e t , dass jeder Einzelmagnet (1) als Korrosionsschutzschicht (2) eine KunststoffSchicht aufweist.2. block magnet (4) according to claim 1, dadurchge ¬ indicates that each individual magnet (1) as a corrosion protection layer (2) has a plastic layer.
3. Blockmagnet (4) nach Anspruch 1, d a d u r c h g e ¬ k e n n z e i c h n e t , dass jeder Einzelmagnet (1) als Korrosionsschutzschicht (2) eine Lackschicht aufweist.3. block magnet (4) according to claim 1, dadurchge ¬ indicates that each individual magnet (1) as corrosion protection layer (2) has a lacquer layer.
4. Blockmagnet (4) nach Anspruch 2, d a d u r c h g e ¬ k e n n z e i c h n e t , dass die Einzelmagnete (1) in Kunststoff-Spritzguss eingebettet sind.4. block magnet (4) according to claim 2, dadurchge ¬ indicates that the individual magnets (1) are embedded in plastic injection molding.
5. Blockmagnet (4) nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass die be¬ schichteten Einzelmagnete (1) durch eine geeignete Verklebung derart miteinander verbunden sind, so dass sich weitere Fi¬ xierungen der Einzelmagnete (1) aneinander erübrigen.5. Block magnet (4) according to any one of the preceding claims, characterized in that the be ¬ coated individual magnets (1) are joined by a suitable bonding together so as to further Fi ¬ that embassies settled the individual magnets (1) are unnecessary to one another.
6. Elektrische Maschine (1) mit einem Stator (9) und einem Rotor (8), wobei der Rotor (8) Blockmagnete (4) nach einem der Ansprüche 1 bis 5 aufweist. 6. Electrical machine (1) with a stator (9) and a rotor (8), wherein the rotor (8) comprises block magnets (4) according to one of claims 1 to 5.
PCT/EP2006/063873 2005-07-13 2006-07-04 Magnet block with an anti-corrosion coating and use in electric motors WO2007006696A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005032721.4 2005-07-13
DE200510032721 DE102005032721B4 (en) 2005-07-13 2005-07-13 Block magnet with corrosion protection and application in electrical machines

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WO2007006696A1 true WO2007006696A1 (en) 2007-01-18

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Cited By (4)

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EA009858B1 (en) * 2007-05-31 2008-04-28 Открытое Акционерное Общество "Инжиниринговая Нефтегазовая Компания - Всероссийский Научно-Исследовательский Институт По Строительству И Эксплуатации Трубопроводов, Объектов Тэк" Magnetic block
EA014728B1 (en) * 2010-03-25 2011-02-28 Открытое Акционерное Общество "Нпо "Русский Электропривод" Magnetic module
US20140145524A1 (en) * 2012-11-28 2014-05-29 Hitachi Koki Co., Ltd. Electric power tool
JP2017163734A (en) * 2016-03-10 2017-09-14 本田技研工業株式会社 Manufacturing method of rotor for rotary electric machine, and rotor of rotary electric machine

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EP2048390A3 (en) * 2007-10-12 2009-08-05 General Electric Company Armature with coated sheets, magnetic bearing with an armature and method for assembling an armature
DE102009031371B4 (en) * 2009-07-01 2011-05-26 Siemens Aktiengesellschaft Rotor and method of manufacturing a rotor of an electric machine
DE102009027916A1 (en) 2009-07-22 2011-01-27 Zf Friedrichshafen Ag Magnetic pole for use at rotor of electrical machine, has magnet segments stuck together by flexible adhesive i.e. silicone adhesive, and distance elements e.g. glass balls, embedded into adhesive between magnet segments
DE102013200476A1 (en) * 2013-01-15 2014-02-27 Siemens Aktiengesellschaft Permanent magnet-excited two-pole synchronous machine e.g. wind force generator, for use as inner rotor machine in wind-power plant, has pockets comprising magnets that exhibits magnetization direction to form magnetic poles of rotor
DE102014113109A1 (en) * 2014-09-11 2016-03-17 Pfeiffer Vacuum Gmbh vacuum pump
CN109412290A (en) * 2017-08-15 2019-03-01 大银微系统股份有限公司 Permanent magnet motor

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DE10349442A1 (en) * 2003-10-23 2005-05-25 Robert Bosch Gmbh Producing rotor for electrical machine with permanent magnetic stimulation involves heating baking lacquer coated magnets in plate packet openings until coating softened so magnets are baked together, to base body at coated contact surfaces

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Publication number Priority date Publication date Assignee Title
EA009858B1 (en) * 2007-05-31 2008-04-28 Открытое Акционерное Общество "Инжиниринговая Нефтегазовая Компания - Всероссийский Научно-Исследовательский Институт По Строительству И Эксплуатации Трубопроводов, Объектов Тэк" Magnetic block
EA014728B1 (en) * 2010-03-25 2011-02-28 Открытое Акционерное Общество "Нпо "Русский Электропривод" Magnetic module
WO2011116778A1 (en) * 2010-03-25 2011-09-29 Открытое Акционерное Общество "Научно-Производственное Объединение "Русский Электропривод" Magnetic module
US20140145524A1 (en) * 2012-11-28 2014-05-29 Hitachi Koki Co., Ltd. Electric power tool
JP2017163734A (en) * 2016-03-10 2017-09-14 本田技研工業株式会社 Manufacturing method of rotor for rotary electric machine, and rotor of rotary electric machine

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DE102005032721B4 (en) 2007-06-06
DE102005032721A1 (en) 2007-01-18

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