EP1644942A1 - Magnetizing device - Google Patents

Magnetizing device

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Publication number
EP1644942A1
EP1644942A1 EP04712003A EP04712003A EP1644942A1 EP 1644942 A1 EP1644942 A1 EP 1644942A1 EP 04712003 A EP04712003 A EP 04712003A EP 04712003 A EP04712003 A EP 04712003A EP 1644942 A1 EP1644942 A1 EP 1644942A1
Authority
EP
European Patent Office
Prior art keywords
magnetized
carrier
magnetizing
magnetic material
magnetizing device
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.)
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Application number
EP04712003A
Other languages
German (de)
French (fr)
Inventor
Robert Leins
Ralf Heinrich
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.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
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Filing date
Publication date
Application filed by Carl Freudenberg KG filed Critical Carl Freudenberg KG
Publication of EP1644942A1 publication Critical patent/EP1644942A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00—Apparatus or processes for magnetising or demagnetising
    • H01F13/003—Methods and devices for magnetising permanent magnets

Definitions

  • the invention relates to a magnetization device comprising at least one carrier made of an insulating material, which is arranged opposite the surface of a body to be magnetized and which has at least one current conductor on the side facing the body to be magnetized, the geometric arrangement of which on the carrier surface has the desired number of poles and arrangement of the body to be magnetized corresponds.
  • current conductors for the magnetization of permanent magnets, which are arranged according to the desired number and arrangement of poles relative to the surface of the body to be magnetized and can be acted upon by current pulses of high intensity to generate the magnetizing magnetic fields.
  • the current conductors are usually embedded in the surface of a carrier, the geometry of this surface being adapted to the geometric shape of the magnetizing body is adapted.
  • the current conductors are arranged on a flat surface for magnetizing a plate-shaped permanent magnet, on the other hand for magnetizing ring-shaped permanent magnets on the inner and / or outer surface of a cylindrical or ring-shaped carrier body.
  • double devices are known which, for magnetization on both sides, receive the body to be magnetized in the manner of a waffle iron between two surfaces covered with current conductors.
  • magnetization devices are generally used in which the current conductors are arranged in a loop and / or meandering shape on the surface of the carrier in accordance with the desired pole pitch.
  • a known application of such multi-pole permanent magnets is, for example, the use as so-called encoder rings in the automotive sector.
  • Encoder rings essentially consist of a ring-shaped or cylindrical carrier which is coated on its outer surface with a magnetizable elastomer. In the elastomer, a stripe-shaped magnetization with alternating polarity is generated in the axial or radial direction along the circumference of the ring.
  • encoder rings allow the determination of angular velocities. They are therefore usually used in ABS systems to determine the angular speed of the wheel axle or to determine the engine speed in the transmission or on the crankshaft.
  • carrier bodies made of a soft magnetic material This has the advantage that the magnetic flux generated by the current conductor subjected to a current pulse is amplified by the soft magnetic material, as a result of which lower current intensities are needed.
  • the manufacture of such magnetization devices is complex since the current conductors must be carefully insulated from the carrier material.
  • the insulation has the further disadvantage that it takes up a significant amount of space in the grooves receiving the current conductors, particularly in the case of narrow pole pitch, which limits the accuracy and fineness of the pole pitch.
  • the carrier In a generic magnetization device, the carrier consists of an insulating material. This eliminates the need to insulate the current conductors from the carrier material.
  • Magnetizing device overcome. However, it is disadvantageous that, due to the lack of reinforcing effect of the carrier material, very high currents are required to generate the required magnetic field strength.
  • the object of the invention is to further develop a magnetization device of the generic type in such a way that the current intensity can be reduced without impairing the magnetization effect.
  • a magnetization device which comprises at least one carrier made of an insulating material, which is arranged opposite the surface of a body to be magnetized and at least one on the side facing the body to be magnetized Has current conductor, the geometric arrangement of which corresponds to the desired number and arrangement of poles of the body to be magnetized, the insulating material is filled with particles containing magnetic material.
  • the present invention takes advantage of the effect known from the prior art that by embedding the current conductor in a magnetic material, a magnetic flux gain and thus a reduction in the current intensity can be achieved, but avoids the disadvantages of the known solution. Because the particles containing the magnetic material are embedded in the insulating material, it is not necessary to electrically isolate the current conductor from the carrier material. Although the maximum achievable increase in magnetic flux in the solution according to the invention is not as high as when using a solid body made of soft magnetic material, narrow pole divisions can still be achieved with high accuracy, as in the case of the pure insulating material.
  • all electrically non-conductive materials are suitable as insulating materials.
  • Plastics and ceramic materials are preferably used as insulating materials.
  • the magnetic particles can both consist entirely of a magnetic material, but they can also comprise a non-magnetic matrix in which magnetic material is embedded.
  • the geometric shape of the particles is not specified.
  • the particle size is preferably between 50 nm and 500 ⁇ m.
  • Soft magnetic materials in particular iron, are preferably used.
  • Nickel and / or cobalt are used to fill the insulating material.
  • the proportion of the magnetic material is preferably between 5 and 99% by volume, particularly preferably about 50% by volume. If the proportion is less than 5% by volume, the magnetic field amplification is too low to lead to a significant reduction in the current strength. If the proportion is more than 99% by volume, the electrical conductivity of the composite is too high.
  • the current conductors can consist of any electrically conductive materials. Current conductors made of copper are preferably used.
  • the current conductors are preferably inserted into groove-shaped depressions in the surface of the carrier. This gives the arrangement the necessary mechanical stability and brings the current-carrying conductors to strengthen their magnetic field into a close operative connection with the magnetic material in the carrier.
  • the carriers can be adapted to the geometry of the permanent magnets to be magnetized.
  • Flat, cylindrical and / or annular arrangements are conceivable here, for example.
  • roller-shaped arrangements for example for magnetizing flat permanent magnets, such as. B. magnetic foils can be used.
  • the current conductors can, for example, be looped and / or meandered on the surface of the carrier.
  • a device according to the invention is preferably used for the production of encoder rings.
  • FIG. 1 shows a schematic representation in plan view of an inventive device for magnetizing an annular magnet (axially magnetized)
  • FIG. 2 shows a schematic representation in perspective side view of a device according to the invention for magnetizing a cylindrical encoder with internal magnetization (radially magnetized inside)
  • FIG 3 shows a schematic representation in a perspective side view of a device according to the invention for magnetizing a cylindrical encoder with external magnetization (radially magnetized on the outside)
  • Fig. 4 shows a schematic representation in plan view of a magnetization device according to the invention for magnetizing a linear permanent magnet.
  • the magnetization device 1 shows a magnetization device 1 according to the invention for magnetizing an encoder ring.
  • the magnetization device 1 comprises an annular or cylindrical support body 2, which is provided on its end face 3 with a meandering current conductor 4 for producing an axial ring magnetization.
  • the current conductor 4 is inserted into a corresponding groove, not shown here, in the carrier surface 3.
  • the carrier body 2 consists of an insulating material which is filled with particles made of a magnetic material in order to increase the magnetic flux.
  • FIG. 2 shows, analogously to FIG. 1, by way of example a further embodiment of the invention for magnetizing an encoder ring on its inner peripheral surface.
  • the current conductor 4 is guided on the outer peripheral surface 5 of the ring-shaped or cylindrical carrier body 2.
  • Fig. 3 shows the execution of a magnetization device for magnetizing an encoder ring on its outer peripheral surface.
  • the current conductor is guided on the inner circumferential surface 6 of the annular carrier body 2
  • FIG. 4 shows an example of a magnetization device 1 according to the invention for producing a linear strip magnetization.
  • the carrier body 2 consists of an insulating material which is filled with particles made of a magnetic material.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

The invention relates to a magnetizing device comprising at least one support (2) which is made of an insulating material, is arranged across from the surface of a body that is to be magnetized, and is provided with at least one current conductor (4) on the side (3, 5) facing the body that is to be magnetized, the geometric arrangement of said current conductor (4) on the support surface (3, 5) corresponding to the desired number of poles and pole arrangement of the body that is to be magnetized. According to the invention, the insulating material is filled with particles containing magnetic material so as to increase the magnetic flow.

Description

Titel Magnetisierungsvorrichtung Title magnetizer
Beschreibung Technisches GebietDescription Technical area
Die Erfindung betrifft eine Magnetisierungsvorrichtung, umfassend wenigstens einen Träger aus einem Isolierstoff, welcher gegenüber der Oberfläche eines zu magnetisierenden Körpers angeordnet wird und welcher auf der dem zu magnetisierenden Körper zugewandten Seite wenigstens einen Stromleiter aufweist, dessen geometrische Anordnung auf der Trägeroberfläche der gewünschten Polzahl und -anordnung des zu magnetisierenden Körpers entspricht.The invention relates to a magnetization device comprising at least one carrier made of an insulating material, which is arranged opposite the surface of a body to be magnetized and which has at least one current conductor on the side facing the body to be magnetized, the geometric arrangement of which on the carrier surface has the desired number of poles and arrangement of the body to be magnetized corresponds.
Stand der TechnikState of the art
Es ist bekannt, zur Magnetisierung von Dauermagneten Stromleiter einzusetzen, die entsprechend der gewünschten Polzahl und -anordnung gegenüber der Oberfläche des zu magnetisierenden Körpers angeordnet werden und zur Erzeugung der magnetisierenden Magnetfelder mit Stromimpulsen von hoher Intensität beaufschlagbar sind. Die Stromleiter sind dabei in der Regel in die Oberfläche eines Trägers eingelassen, wobei die Geometrie dieser Oberfläche an die geometrische Gestalt des zu magnetisierenden Körpers angepaßt ist. So werden die Stromleiter beispielsweise zur Magnetisierung eines plattenförmigen Dauermagneten auf einer ebenen Oberfläche angeordnet, zur Magnetisierung ringförmiger Dauermagnete dagegen auf der Innen- und/oder Aussenfläche eines zylinder- oder ringförmigen Trägerkörpers. Weiterhin sind Doppel-Vorrichtungen bekannt, die zur beidseitigen Magnetisierung den zu magnetisierenden Körper nach Art eines Waffeleisens zwischen zwei mit Stromleitern belegten Oberflächen aufnehmen.It is known to use current conductors for the magnetization of permanent magnets, which are arranged according to the desired number and arrangement of poles relative to the surface of the body to be magnetized and can be acted upon by current pulses of high intensity to generate the magnetizing magnetic fields. The current conductors are usually embedded in the surface of a carrier, the geometry of this surface being adapted to the geometric shape of the magnetizing body is adapted. For example, the current conductors are arranged on a flat surface for magnetizing a plate-shaped permanent magnet, on the other hand for magnetizing ring-shaped permanent magnets on the inner and / or outer surface of a cylindrical or ring-shaped carrier body. Furthermore, double devices are known which, for magnetization on both sides, receive the body to be magnetized in the manner of a waffle iron between two surfaces covered with current conductors.
Zur Magnetisierung mehrpoliger Dauermagnete, z.B. von Dauermagneten mit streifenförmiger Magnetisierung mit abwechselnder Polung, werden in der Regel Magnetisierungsvorrichtungen eingesetzt, bei welchen die Stromleiter entsprechend der gewünschten Polteilung Schlaufen- und/oder mäandβrförmig auf der Oberfläche des Trägers angeordnet werden. Eine bekannte Anwendung solcher mehrpoliger Dauermagnete besteht beispielsweise in dem Einsatz als sogenannte Encoder-Ringe im Automobilbereich. Encoder-Ringe bestehen im wesentlichen aus einem ring- oder zylinderförmigen Träger, der auf seiner äußeren Oberfläche mit einem magnetisierbaren Elastomer belegt ist. In dem Elastomer wird entlang des Ringumfangs eine in axialer oder radialer Richtung streifenförmige Magnetisierung mit abwechselnder Polung erzeugt. In Kombination mit einem entsprechenden Sensor erlauben Encoder- Ringe die Bestimmung von Winkelgeschwindigkeiten. Sie werden daher üblicherweise in ABS-Systemen zur Bestimmung der Winkelgeschwindigkeit der Radachse oder zur Ermittlung der Motordrehzahl im Getriebe oder auf der Kurbelwelle eingesetzt.For magnetizing multi-pole permanent magnets, e.g. of permanent magnets with strip-shaped magnetization with alternating polarity, magnetization devices are generally used in which the current conductors are arranged in a loop and / or meandering shape on the surface of the carrier in accordance with the desired pole pitch. A known application of such multi-pole permanent magnets is, for example, the use as so-called encoder rings in the automotive sector. Encoder rings essentially consist of a ring-shaped or cylindrical carrier which is coated on its outer surface with a magnetizable elastomer. In the elastomer, a stripe-shaped magnetization with alternating polarity is generated in the axial or radial direction along the circumference of the ring. In combination with a corresponding sensor, encoder rings allow the determination of angular velocities. They are therefore usually used in ABS systems to determine the angular speed of the wheel axle or to determine the engine speed in the transmission or on the crankshaft.
Es ist bekannt, Trägerkörper aus einem weichmagnetischen Material zu verwenden. Dies hat den Vorteil, dass der durch den mit einem Stromimpuls beaufschlagte Stromleiter erzeugte magnetische Fluß durch das weichmagnetische Material verstärkt wird, wodurch geringere Stromstärken benötigt werden. Die Herstellung solcher Magnetisierungsvorrichtungen ist jedoch aufwendig, da die Stromleiter gegenüber dem Trägermaterial sorgfältig isoliert werden müssen. Die Isolierung hat den weiteren Nachteil, dass sie insbesondere bei enger Polteilung einen bedeutenden Raumanteil der die Stromleiter aufnehmenden Nuten beansprucht, wodurch die Genauigkeit und Feinheit der Polteilung beschränkt wird.It is known to use carrier bodies made of a soft magnetic material. This has the advantage that the magnetic flux generated by the current conductor subjected to a current pulse is amplified by the soft magnetic material, as a result of which lower current intensities are needed. However, the manufacture of such magnetization devices is complex since the current conductors must be carefully insulated from the carrier material. The insulation has the further disadvantage that it takes up a significant amount of space in the grooves receiving the current conductors, particularly in the case of narrow pole pitch, which limits the accuracy and fineness of the pole pitch.
Bei einer gattungsgemäßen Magnetisierungsvorrichtung besteht der Träger aus einem Isolierstoff. Dadurch entfällt die Notwendigkeit, die Stromleiter gegenüber dem Trägermaterial zu isolieren. Die mit einer Isolierung verbundenen weiteren Nachteile, wie hoher Herstellungsaufwand, Begrenzung der Genauigkeit und Feinheit der Polteilung, werden bei einer solchenIn a generic magnetization device, the carrier consists of an insulating material. This eliminates the need to insulate the current conductors from the carrier material. The other disadvantages associated with insulation, such as high manufacturing costs, limitation of the accuracy and fineness of the pole pitch, are such
Magnetisierungsvorrichtung überwunden. Nachteilig st jedoch, dass aufgrund der fehlenden Verstärkungswirkung des Trägermateri als sehr hohe Ströme zur Erzeugung der erforderlichen Magnetfeldstärke benöti gt werden.Magnetizing device overcome. However, it is disadvantageous that, due to the lack of reinforcing effect of the carrier material, very high currents are required to generate the required magnetic field strength.
Darstellung der ErfindungPresentation of the invention
Aufgabe der Erfindung ist, eine Magnetisierungsvorrichtung der gattungsgemäßen Art so weiterzuentwickeln, dass ohne Beeinträchtigung der Magnetisierungswirkung eine Reduzierung der Stromstärke möglich ist.The object of the invention is to further develop a magnetization device of the generic type in such a way that the current intensity can be reduced without impairing the magnetization effect.
Diese Aufgabe wird gelöst mit einer Magnetisierungsvorrichtung mit allen Merkmalen des Patentanspruchs 1.This object is achieved with a magnetizing device with all the features of claim 1.
Erfindungsgemäß ist vorgesehen, dass bei einer Magnetisierungsvorrichtung, die wenigstens einen Träger aus einem Isolierstoff umfasst, welcher gegenüber der Oberfläche eines zu magnetisierenden Körpers angeordnet wird und auf der dem zu magnetisierenden Körper zugewandten Seite wenigstens einen Stromleiter aufweist, dessen geometrische Anordnung auf der Trägeroberfläche der gewünschten Polzahl- und -anordnung des zu magnetisierenden Körpers entspricht, der Isolierstoff mit magnetisches Material enthaltenden Partikeln befüllt ist.According to the invention, it is provided that in a magnetization device which comprises at least one carrier made of an insulating material, which is arranged opposite the surface of a body to be magnetized and at least one on the side facing the body to be magnetized Has current conductor, the geometric arrangement of which corresponds to the desired number and arrangement of poles of the body to be magnetized, the insulating material is filled with particles containing magnetic material.
Die vorliegende Erfindung macht sich den aus dem Stand der Technik bekannten Effekt, dass durch Einbetten des Stromleiters in ein magnetisches Material eine Magnetflussverstärkung und damit eine Verringerung der Stromstärke erzielbar ist, zunutze, vermeidet dabei jedoch die Nachteile der bekannten Lösung. Dadurch, dass die das magnetisches Material enthaltenden Partikel in dem Isolierstoff eingebettet sind, ist es nicht erforderlich, den Stromleiter gegenüber dem Trägermaterial elektrisch zu isolieren. Zwar ist die maximal erzielbare Magnetflusserhöhung bei der erfindungsgemäßen Lösung nicht so hoch wie bei Verwendung eines Vollkörpers aus weichmagnetischem Material, dafür lassen sich aber wie im Falle des reinen Isolierstoffs weiterhin enge Polteilungen mit hoher Genauigkeit realisieren.The present invention takes advantage of the effect known from the prior art that by embedding the current conductor in a magnetic material, a magnetic flux gain and thus a reduction in the current intensity can be achieved, but avoids the disadvantages of the known solution. Because the particles containing the magnetic material are embedded in the insulating material, it is not necessary to electrically isolate the current conductor from the carrier material. Although the maximum achievable increase in magnetic flux in the solution according to the invention is not as high as when using a solid body made of soft magnetic material, narrow pole divisions can still be achieved with high accuracy, as in the case of the pure insulating material.
Als Isolierstoffe sind erfindungsgemäß alle elektrisch nicht leitenden Materialien geeignet. Vorzugsweise kommen Kunststoffe und keramische Materialien als Isolierstoffe zum Einsatz.According to the invention, all electrically non-conductive materials are suitable as insulating materials. Plastics and ceramic materials are preferably used as insulating materials.
Die magnetischen Partikel können sowohl vollständig aus einem magnetischen Material bestehen, sie können aber auch eine nicht magnetische Matrix umfassen, in die magnetisches Material eingebettet ist. Die geometrische Gestalt der Partikel ist nicht festgelegt. Die Partikelgröße liegt vorzugsweise zwischen 50 nm und 500 μm.The magnetic particles can both consist entirely of a magnetic material, but they can also comprise a non-magnetic matrix in which magnetic material is embedded. The geometric shape of the particles is not specified. The particle size is preferably between 50 nm and 500 μm.
Vorzugsweise werden weichmagnetische Materialien, insbesondere Eisen,Soft magnetic materials, in particular iron, are preferably used.
Nickel und/oder Kobalt zur Befüllung des Isolierstoffs verwendet. Der Anteil des magnetischen Materials liegt vorzugsweise zwischen 5 und 99 Vol.-%, besonders bevorzugt etwa 50 Vol.-%. Liegt der Anteil niedriger als 5 Vol.-% , ist die Magnetfeldverstärkung zu gering, um zu einer nennenswerten Verringerung der Stromstärke zu führen. Beträgt der Anteil mehr als 99 Vol.-%, ist die elektrische Leitfähigkeit des Composites zu hoch.Nickel and / or cobalt are used to fill the insulating material. The proportion of the magnetic material is preferably between 5 and 99% by volume, particularly preferably about 50% by volume. If the proportion is less than 5% by volume, the magnetic field amplification is too low to lead to a significant reduction in the current strength. If the proportion is more than 99% by volume, the electrical conductivity of the composite is too high.
Die Herstellung von mit magnetischen Partikeln befüllten Isolationsmaterialien an sich ist bekannt und in der Literatur vielfach beschrieben.The production of insulation materials filled with magnetic particles is known per se and has been described many times in the literature.
Die Stromleiter können aus beliebigen elektrisch leitenden Materialien bestehen. Vorzugsweise werden Stromleiter aus Kupfer verwendet.The current conductors can consist of any electrically conductive materials. Current conductors made of copper are preferably used.
Wie aus dem Stand der Technik bekannt, werden die Stromleiter vorzugsweise in nutförmige Vertiefungen in der Oberfläche des Trägers eingelegt. Dies verleiht der Anordnung die nötige mechanische Stabilität und bringt die Strom führenden Leiter zur Verstärkung ihres Magnetfeldes in eine enge Wirkverbindung mit dem magnetischen Material im Träger.As is known from the prior art, the current conductors are preferably inserted into groove-shaped depressions in the surface of the carrier. This gives the arrangement the necessary mechanical stability and brings the current-carrying conductors to strengthen their magnetic field into a close operative connection with the magnetic material in the carrier.
Wie ebenfalls aus dem Stand der Technik bekannt, können die Träger an die Geometrie der zu magnetisierenden Dauermagneten angepaßt werden. Hier sind beispielsweise flächige, zylindrische und/oder ringförmige Anordnungen denkbar. Ebenfalls denkbar sind walzenförmige Anordnungen, die beispielsweise zur Magnetisierung flächiger Dauermagneten, wie z. B. Magnetfolien, eingesetzt werden können.As is also known from the prior art, the carriers can be adapted to the geometry of the permanent magnets to be magnetized. Flat, cylindrical and / or annular arrangements are conceivable here, for example. Also conceivable are roller-shaped arrangements, for example for magnetizing flat permanent magnets, such as. B. magnetic foils can be used.
Zur Herstellung mehrpoliger Dauermagnete mit abwechselnder Polung können die Stromleiter, wie auch aus dem Stand der Technik bekannt ist, beispielsweise Schlaufen- und/oder mäanderförmig auf der Oberfläche des Trägers geführt werden. Vorzugsweise wird eine erfindungsgemäße Vorrichtung zur Herstellung von Encoder-Ringen eingesetzt.For the production of multi-pole permanent magnets with alternating polarity, the current conductors, as is also known from the prior art, can, for example, be looped and / or meandered on the surface of the carrier. A device according to the invention is preferably used for the production of encoder rings.
Kurzbeschreibung der ZeichnungenBrief description of the drawings
Nachfolgend wird die Erfindung an Hand der Figuren näher erläutert.The invention is explained in more detail below with the aid of the figures.
Es zeigen:Show it:
Fig. 1 in schematischer Darstellung in Draufsicht eine erfindungsgemäße Vorrichtung zur Magnetisierung eines ringförmigen Magneten (axial magnetisiert) ,1 shows a schematic representation in plan view of an inventive device for magnetizing an annular magnet (axially magnetized),
Fig.2 in schematischer Darstellung in perspektivischer Seitenansicht eine erfindungsgemäße Vorrichtung zur Magnetisierung eines zylinderförmigen Encoders mit innenliegendender Magnetisierung (radial innen magnetisiert)2 shows a schematic representation in perspective side view of a device according to the invention for magnetizing a cylindrical encoder with internal magnetization (radially magnetized inside)
Fig.3 in schematischer Darstellung in perspektivischer Seitenansicht eine erfindungsgemäße Vorrichtung zur Magnetisierung eines zylinderförmigen Encoders mit außenliegendender Magnetisierung (radial außen magnetisiert)3 shows a schematic representation in a perspective side view of a device according to the invention for magnetizing a cylindrical encoder with external magnetization (radially magnetized on the outside)
Fig. 4 in schematischer Darstellung in Draufsicht eine erfindungsgemäße Magnetisierungsvorrichtung zur Magnetisierung eines linearen Dauermagneten. Ausführung der ErfindungFig. 4 shows a schematic representation in plan view of a magnetization device according to the invention for magnetizing a linear permanent magnet. Implementation of the invention
Man erkennt in Fig. 1 eine erfindungsgemäße Magnetisierungsvorrichtung 1 zur Magnetisierung eines Encoder-Ringes. Die Magnetisierungsvorrichtung 1 umfaßt einen ring- oder zylinderförmigen Trägerkörper 2, der auf seiner Stirnfläche 3 zur Herstellung einer axialen Ringmagnetisierung mit einem mäanderförmig umlaufenden Stromleiter 4 versehen ist. Der Stromleiter 4 ist in eine entsprechende, hier nicht dargestellte Nut in der Trägeroberfläche 3 eingelegt. Der Trägerkörper 2 besteht erfindungsgemäß aus einem Isolationsstoff, der zur Verstärkung des Magnetflusses mit Partikeln aus einem magnetischen Material befüllt ist.1 shows a magnetization device 1 according to the invention for magnetizing an encoder ring. The magnetization device 1 comprises an annular or cylindrical support body 2, which is provided on its end face 3 with a meandering current conductor 4 for producing an axial ring magnetization. The current conductor 4 is inserted into a corresponding groove, not shown here, in the carrier surface 3. According to the invention, the carrier body 2 consists of an insulating material which is filled with particles made of a magnetic material in order to increase the magnetic flux.
Fig. 2 zeigt analog zu Fig. 1 beispielhaft eine weitere Ausführungsform der Erfindung zur Magnetisierung eines Encoder-Ringes auf dessen Innenumfangsfläche. Der Stromleiter 4 ist hierzu auf der Aussenumfangsfläche 5 des ring- oder zylinderförmigen Trägerkörpers 2 geführt.2 shows, analogously to FIG. 1, by way of example a further embodiment of the invention for magnetizing an encoder ring on its inner peripheral surface. For this purpose, the current conductor 4 is guided on the outer peripheral surface 5 of the ring-shaped or cylindrical carrier body 2.
Fig. 3 zeigt die Ausführung einer Magnetisierungsvorrichtung zur Magnetisierung eines Encoder-Ringes auf dessen Außenumfangsfläche . Der Stromleiter wird hierzu auf der Innenumfangsfläche 6 des ringförmigen Trägerkörpers 2 geführtFig. 3 shows the execution of a magnetization device for magnetizing an encoder ring on its outer peripheral surface. For this purpose, the current conductor is guided on the inner circumferential surface 6 of the annular carrier body 2
In Fig. 4 ist beispielhaft eine Magnetisierungsvorrichtung 1 gemäß der Erfindung zur Herstellung einer linear verlaufenden Streifenmagnetisierung dargestellt. Auch bei dieser Ausführungsform besteht der Trägerkörper 2 aus einem Isolationsstoff, der mit Partikeln aus einem magnetischen Material befüllt ist. FIG. 4 shows an example of a magnetization device 1 according to the invention for producing a linear strip magnetization. In this embodiment too, the carrier body 2 consists of an insulating material which is filled with particles made of a magnetic material.

Claims

Patentansprüche claims
1. Magnetisierungsvorrichtung, umfassend wenigstens einen Träger (2) aus einem Isolierstoff, welcher gegenüber der Oberfläche eines zu magnetisierenden Körpers angeordnet wird und auf der dem zu magnetisierenden Körper zugewandten Seite (3, 5) wenigstens einen Stromleiter (4) aufweist, dessen geometrische Anordnung auf der Trägeroberfläche (3, 5) der gewünschten Polzahl und -anordnung des zu magnetisierenden Körpers entspricht, dadurch gekennzeichnet, dass der Isolierstoff mit ein magnetisches Material enthaltenden Partikeln befüllt ist.1. Magnetizing device comprising at least one carrier (2) made of an insulating material, which is arranged opposite the surface of a body to be magnetized and on the side facing the body to be magnetized (3, 5) has at least one current conductor (4), the geometric arrangement thereof on the carrier surface (3, 5) corresponds to the desired number and arrangement of poles of the body to be magnetized, characterized in that the insulating material is filled with particles containing a magnetic material.
2. Magnetisierungsvorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass das magnetische Material ein weichmagnetisches Material umfasst2. Magnetizing device according to claim 1, characterized in that the magnetic material comprises a soft magnetic material
3. Magnetisierungsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das weichmagnetische Material Eisen, Kobalt und/oder Nickel umfasst.3. Magnetizing device according to claim 1 or 2, characterized in that the soft magnetic material comprises iron, cobalt and / or nickel.
4. Magnetisierungsvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Isolierstoff aus Kunststoff oder Keramik besteht.4. Magnetizing device according to one of claims 1 to 3, characterized in that the insulating material consists of plastic or ceramic.
5. Magnetisierungsvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Stromleiter (4) in einer nutförmigen Vertiefung in die Trägeroberfläche (3, 5) eingelassen ist. 5. Magnetizing device according to one of claims 1 to 3, characterized in that the current conductor (4) is embedded in a groove-shaped recess in the carrier surface (3, 5).
EP04712003A 2003-07-11 2004-02-18 Magnetizing device Withdrawn EP1644942A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10331789.9A DE10331789B4 (en) 2003-07-11 2003-07-11 magnetizing device
PCT/EP2004/001510 WO2005008693A1 (en) 2003-07-11 2004-02-18 Magnetizing device

Publications (1)

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EP1644942A1 true EP1644942A1 (en) 2006-04-12

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EP04712003A Withdrawn EP1644942A1 (en) 2003-07-11 2004-02-18 Magnetizing device

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EP (1) EP1644942A1 (en)
DE (1) DE10331789B4 (en)
WO (1) WO2005008693A1 (en)

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Publication number Priority date Publication date Assignee Title
JP4503299B2 (en) * 2004-01-15 2010-07-14 内山工業株式会社 Magnetizer for tone wheel

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DE1101637B (en) * 1957-03-30 1961-03-09 Deutsche Edelstahlwerke Ag Pressing device for the production of anisotropic permanent magnet bodies from powdery starting materials
CH459368A (en) * 1966-05-21 1968-07-15 Ct Electronique Horloger Method of magnetization of magnetic wheels for magnetic gear and device for carrying out the method
DE3214176A1 (en) * 1982-04-17 1983-10-20 Erich Dr.-Ing. 5300 Bonn Steingroever MULTIPOLE MAGNETIZING DEVICE FOR PERMANENT MAGNET
JPS59103552A (en) * 1982-12-03 1984-06-15 Victor Co Of Japan Ltd Magnetizing coil
DE3337761A1 (en) * 1983-10-18 1985-04-25 Erich Dr.-Ing. 5300 Bonn Steingroever MAGNETIZING DEVICE FOR ANISOTROPAL PERMANENT MAGNETS
DE3901303A1 (en) * 1989-01-18 1990-07-19 Gerd Pruschke Magnetising device for permanent magnets
JPH0614489B2 (en) * 1989-03-22 1994-02-23 赤井電機株式会社 Multi-pole magnetizing device
JPH03173406A (en) * 1989-12-01 1991-07-26 Sumitomo Special Metals Co Ltd Multipolar magnetizer
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Also Published As

Publication number Publication date
DE10331789B4 (en) 2015-06-25
DE10331789A1 (en) 2005-02-24
WO2005008693A1 (en) 2005-01-27

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