EP1797572B1 - Device for potential separation, toroidal core throttle, and method for producing a toroidal core throttle - Google Patents

Device for potential separation, toroidal core throttle, and method for producing a toroidal core throttle Download PDF

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Publication number
EP1797572B1
EP1797572B1 EP05782179A EP05782179A EP1797572B1 EP 1797572 B1 EP1797572 B1 EP 1797572B1 EP 05782179 A EP05782179 A EP 05782179A EP 05782179 A EP05782179 A EP 05782179A EP 1797572 B1 EP1797572 B1 EP 1797572B1
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EP
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Prior art keywords
potential separation
toroidal core
centre part
potential
core
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EP05782179A
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German (de)
French (fr)
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EP1797572A1 (en
Inventor
Günter FEIST
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TDK Electronics AG
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Epcos AG
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/04—Fixed inductances of the signal type  with magnetic core
    • H01F17/06—Fixed inductances of the signal type  with magnetic core with core substantially closed in itself, e.g. toroid
    • H01F17/062—Toroidal core with turns of coil around it
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306—Fastening or mounting coils or windings on core, casing or other support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/16—Toroidal transformers

Definitions

  • the invention relates to a device for potential separation for a toroidal core choke with multiple windings.
  • An isolation part suitable for potential separation is z. B. from the document DE 10223995 C1 known.
  • the insulating part comprises the toroidal core of a toroidal core choke and has projections for fixing wire windings and for maintaining a grid dimension.
  • the insulating part has webs in the middle region, which provide the potential separation.
  • the insulating part has radially outwardly extending webs, which are elastically deformable by the pressure in the radial direction.
  • Object of the present invention is to provide a device for electrical isolation, which can be inexpensively manufactured and used in a toroidal core choke.
  • a device for potential separation is specified, which is suitable for installation in the core hole of a toroidal core.
  • the device for electrical isolation comprises a central part and outwardly extending, by the rotation of the central part elastically deformable webs, each having on its side facing away from the central part or the toroidal end facing a preferably radially extending, rigid insulating region.
  • the insulating region is preferably thickened relative to the web associated therewith.
  • the device for electrical isolation is preferably formed in one piece.
  • the potential separation device can be inserted into the core hole of a toroid without a great deal of effort. When the potential separation device is screwed into the core hole, it springs back so far until it is clamped in the core hole. The falling out of the potential separation device from the toroidal core choke is prevented.
  • the elastic flexibility of the potential separation device makes it possible, in particular to compensate for the tolerances in the formation of the core hole.
  • the deformable webs are thin-walled spring elements which are bent into the core hole when the potential-separating device is screwed in, as a result of which the insulating regions are withdrawn toward the center, whereby the diameter of the potential-separating device is reduced.
  • any plastics are suitable which are preferably heat-resistant or fire-resistant.
  • a device for the frictional connection of a rotary mandrel is preferably provided, which in a variant of a trained in the middle part, along the Rotary axis directed blind hole recess for receiving the rotary mandrel represents.
  • a breakthrough directed along the axis of rotation can also be provided for receiving the rotary mandrel.
  • the device for non-positive connection of a rotary mandrel may alternatively comprise a plurality of recesses formed on the central part and oriented parallel to the axis of rotation for receiving a plurality of rotary mandrels.
  • pockets may be formed, wherein the outer wall of a pocket preferably forms part of a deformable web.
  • the pockets preferably run in the plane of rotation obliquely to the radial direction or substantially in the circumferential direction.
  • the insulating regions may each have projections for locking the toroidal core, which prevent slipping of the potential separation device in the longitudinal direction (parallel to the axis of rotation). These projections are preferably provided (when viewed in the longitudinal direction) at both ends of the respective insulating region, wherein in the insulating region a recess is formed, in which the toroidal core can be arranged.
  • the insulating regions preferably extend substantially in the radial direction.
  • the deformable webs are preferably angled in the relaxed state relative to the associated insulating region. The angle can z. B. at three bars about 24 °.
  • the device for electrical isolation can be separated in a toroidal core choke with the toroidal core and several Windings are used, wherein the number of insulating regions is equal to the number of windings.
  • the deformable webs are stretched in the direction of rotation after insertion in the core hole and exert an elastic force on the insulating regions, which acts in the direction of the toroidal core.
  • the insulating region is pressed against the inner wall of the toroidal core.
  • the diameter of the device for potential separation in a relaxed state is greater than the inner diameter of the toroidal core.
  • the winding of the toroidal core choke forms the counterbearing during the development of the webs around the central part, wherein the insulating regions in each case rest against a winding (closest in the direction of circulation).
  • the middle part is placed on a rotary mandrel and driven non-positively during rotation by means of the rotary mandrel.
  • Each web 21 to 23 represents a thin wall, which is aligned parallel to the axis of rotation. Characterized in that the webs 21 to 23 are formed thin-walled, they are in a direction that lies in the plane transverse to the web wall plane - the plane of rotation - easily deformed.
  • the insulating regions 31 to 33 are each aligned in the radial direction.
  • the webs run obliquely with respect to the radial direction or with respect to the associated insulating region, wherein each non-biased state rectilinear web 21 to 23 connects its associated insulating region 31 to 33 and the middle part 1 "diagonal".
  • a larger web length is achieved, which increases the flexibility of the web.
  • pockets 11 are formed at the base of each web, which serve to further extend the respective web.
  • the breakthrough 12 is here prismatic or triangular in cross section and aligned along the axis of rotation.
  • the aperture or a blind hole corresponding thereto may have a different cross section, which is suitable for guiding (during rotation) of the central part 1 by an external turning device.
  • the rotational force is preferably transmitted by the rotary device to the middle part 1 in a form-fitting manner.
  • the formation of the opening 12 with (in cross-section) at least three vertices is special advantageous. However, it is also possible to form the aperture 12 with axes of different lengths in the plane of rotation (eg as ellipsoid or rectangle).
  • the leading element of the rotating device may, but need not be arranged form-fitting in the opening 12.
  • a device for electrical isolation in which the insulating regions or webs to each other always the same angle 360 ° / n - at three bars 120 ° - have, where n ⁇ 2 is the number of insulating regions or the webs.
  • the wall thickness of the webs may vary depending on the diameter of the intended core hole z. B. between 0.5 mm and 1 mm.
  • the wall thickness of the webs can also be selected depending on the design smaller than 0.5 mm or larger than 1 mm.
  • the web length is preferably at least five times greater than its wall thickness.
  • the wall thickness of the insulating regions preferably does not fall below the value of 2 mm.
  • the height of the potential separation device depends on the height of the toroidal core in which the potential separation device is to be fixed.
  • FIG. 1B is a schematic side view of in Figure 1A presented device presented.
  • the length of the potential separation device in a longitudinal direction extending parallel to the axis of rotation exceeds in this variant the intended height of the toroidal core.
  • projections 311, 312; 321, 322 and 331, 332 formed, between which the ring core of the toroidal core choke can be fixed in the longitudinal direction.
  • the length of the potential separation device in the longitudinal direction may fall below the intended height of the toroidal core in a further variant or the same.
  • the fixing projections 311, 312, 321, 322 can even be dispensed with.
  • the projections 311, 312, 321, 322 can press against the inner wall of the toroidal core and thus fix the potential separation device in the core hole.
  • the potential separator is shown in a non-biased condition prior to insertion in the core hole, wherein the diameter 51 of a circle comprising the non-biased potential separator is greater than the intended diameter 52 of the core hole.
  • the webs 21 to 23 are straight.
  • the potential divider is shown in a pre-stressed state after insertion in the core hole, wherein the diameter of a circle comprising the pre-stressed potential divider equals the diameter 52 of the core hole.
  • Arrows indicate the offset direction 61 of the insulating regions 31 to 33 and the direction of rotation 62.
  • the insulating regions 31 to 33 are preferably formed during the rotation of the central part 1 by a wire winding (see FIG. 2 ), whereby the deformation of the webs 21 to 23 is carried out. By the deformation of a web, z. B. of the web 21, the corresponding insulating region 31 is moved to the center of the device.
  • the offset direction 61 of the insulating regions 31 to 33 corresponds to a radial direction.
  • the potential separation device As soon as the diameter of the potential separation device reaches the diameter of the core hole, the potential separation device is pushed into the core hole.
  • the webs 21 to 23 remain in a tensioned state and exert on the insulating regions 31 to 33 an elastic force acting in the radial direction against the toroidal core, thus fixing the potential separation device in the core hole.
  • the invention is not limited to the exemplary embodiments explained in FIGS., In particular the shape or the number of illustrated elements. Any number of webs or insulating areas are possible.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Insulating Of Coils (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zur Potentialtrennung für eine Ringkerndrossel mit mehreren Wicklungen.The invention relates to a device for potential separation for a toroidal core choke with multiple windings.

Ein zur Potentialtrennung geeignetes Isolierteil ist z. B. aus der Druckschrift DE 10223995 C1 bekannt. Das Isolierteil umfasst den Ringkern einer Ringkerndrossel und weist Vorsprünge zum Fixieren von Drahtwicklungen sowie zum Einhalten eines Rastermaßes auf. Das Isolierteil weist im Mittelbereich Stege auf, die für die Potentialtrennung sorgen.An isolation part suitable for potential separation is z. B. from the document DE 10223995 C1 known. The insulating part comprises the toroidal core of a toroidal core choke and has projections for fixing wire windings and for maintaining a grid dimension. The insulating part has webs in the middle region, which provide the potential separation.

Ein weiteres zur Potentialtrennung geeignetes Isolierteil ist z. B. aus der Druckschrift DE 10308010 A1 bekannt. Das Isolierteil weist radial nach außen verlaufende Stege auf, die durch den Druck in radialer Richtung elastisch verformbar sind.Another suitable for electrical isolation Isolierteil is z. B. from the document DE 10308010 A1 known. The insulating part has radially outwardly extending webs, which are elastically deformable by the pressure in the radial direction.

Aufgabe der vorliegenden Erfindung ist es, eine Vorrichtung zur Potentialtrennung anzugeben, die kostengünstig hergestellt und in eine Ringkerndrossel eingesetzt werden kann.Object of the present invention is to provide a device for electrical isolation, which can be inexpensively manufactured and used in a toroidal core choke.

Diese Aufgabe ist durch eine Vorrichtung zur Potentialtrennung nach Anspruch 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung gehen aus den weiteren Ansprüchen hervor.This object is achieved by a device for potential separation according to claim 1. Advantageous embodiments and modifications of the invention will become apparent from the other claims.

Es wird eine Vorrichtung zur Potentialtrennung angegeben, die zum Einbau in das Kernloch eines Ringkerns geeignet ist. Die Vorrichtung zur Potentialtrennung umfasst ein Mittelteil und nach außen verlaufende, durch die Drehung des Mittelteils elastisch verformbare Stege, die jeweils an ihrem vom Mittelteil abgewandten bzw. zum Ringkern gewandten Ende einen vorzugsweise radial verlaufenden, starren Isolierbereich aufweisen. Der Isolierbereich ist vorzugsweise gegenüber dem ihm zugeordneten Steg verdickt.A device for potential separation is specified, which is suitable for installation in the core hole of a toroidal core. The device for electrical isolation comprises a central part and outwardly extending, by the rotation of the central part elastically deformable webs, each having on its side facing away from the central part or the toroidal end facing a preferably radially extending, rigid insulating region. The insulating region is preferably thickened relative to the web associated therewith.

Die Vorrichtung zur Potentialtrennung ist vorzugsweise einstückig ausgebildet.The device for electrical isolation is preferably formed in one piece.

Die Potentialtrennvorrichtung kann in das Kernlochs eines Ringkerns ohne einen großen Kraftaufwand eingeführt werden. Wenn die Potentialtrennvorrichtung in das Kernlochs eingedreht ist, federt sie soweit zurück, bis sie im Kernloch eingespannt ist. Das Herausfallen der Potentialtrennvorrichtung aus der Ringkerndrossel wird dadurch verhindert. Durch die elastische Flexibilität der Potentialtrennvorrichtung gelingt es, insbesondere die Toleranzen bei der Ausbildung des Kernlochs auszugleichen.The potential separation device can be inserted into the core hole of a toroid without a great deal of effort. When the potential separation device is screwed into the core hole, it springs back so far until it is clamped in the core hole. The falling out of the potential separation device from the toroidal core choke is prevented. The elastic flexibility of the potential separation device makes it possible, in particular to compensate for the tolerances in the formation of the core hole.

Die verformbare Stege stellen dünnwandige Federelemente dar, die beim Eindrehen der Potentialtrennvorrichtung in das Kernloch gebogen werden, wodurch die Isolierbereiche zum Zentrum hin zurückgezogen_werden, wobei der Durchmesser der Potentialtrennvorrichtung verringert wird.The deformable webs are thin-walled spring elements which are bent into the core hole when the potential-separating device is screwed in, as a result of which the insulating regions are withdrawn toward the center, whereby the diameter of the potential-separating device is reduced.

Als Material für die Potentialtrennvorrichtung sind beliebige Kunststoffe geeignet, die vorzugsweise hitzebeständig oder brandfest sind.As material for the potential separation device, any plastics are suitable which are preferably heat-resistant or fire-resistant.

Am Mittelteil ist vorzugsweise eine Vorrichtung zur kraftschlüssigen Anbindung eines Drehdorns vorgesehen, die in einer Variante eine im Mittelteil ausgebildete, entlang der Drehachse gerichtete Sacklochvertiefung zur Aufnahme vom Drehdorn darstellt. Anstelle einer Sacklochvertiefung kann auch ein entlang der Drehachse gerichteter Durchbruch zur Aufnahme vom Drehdorn vorgesehen sein.At the middle part, a device for the frictional connection of a rotary mandrel is preferably provided, which in a variant of a trained in the middle part, along the Rotary axis directed blind hole recess for receiving the rotary mandrel represents. Instead of a blind hole depression, a breakthrough directed along the axis of rotation can also be provided for receiving the rotary mandrel.

Die Vorrichtung zur kraftschlüssigen Anbindung eines Drehdorns kann alternativ mehrere am Mittelteil ausgebildete, parallel zur Drehachse ausgerichtete Ausnehmungen zur Aufnahme von mehreren Drehdornen aufweisen.The device for non-positive connection of a rotary mandrel may alternatively comprise a plurality of recesses formed on the central part and oriented parallel to the axis of rotation for receiving a plurality of rotary mandrels.

Am Mittelteil der Potentialtrennvorrichtung können Taschen ausgebildet sind, wobei die äußere Wand einer Tasche vorzugsweise einen Teil eines verformbaren Stegs bildet. Die Taschen verlaufen vorzugsweise in der Drehebene schräg zu radialer Richtung bzw. im Wesentlichen in Umfangsrichtung.At the central part of the potential separation device pockets may be formed, wherein the outer wall of a pocket preferably forms part of a deformable web. The pockets preferably run in the plane of rotation obliquely to the radial direction or substantially in the circumferential direction.

Die Isolierbereiche können jeweils Vorsprünge zum Einrasten des Ringkerns aufweisen, die das Wegrutschen der Potentialtrennvorrichtung in Längsrichtung (parallel zur Drehachse) verhindern. Diese Vorsprünge sind vorzugsweise (bei Betrachtung in Längsrichtung) an beiden Enden des jeweiligen Isolierbereichs vorgesehen, wobei im Isolierbereich eine Vertiefung gebildet wird, in der der Ringkern angeordnet werden kann.The insulating regions may each have projections for locking the toroidal core, which prevent slipping of the potential separation device in the longitudinal direction (parallel to the axis of rotation). These projections are preferably provided (when viewed in the longitudinal direction) at both ends of the respective insulating region, wherein in the insulating region a recess is formed, in which the toroidal core can be arranged.

Die Isolierbereiche verlaufen vorzugsweise im Wesentlichen in radialer Richtung. Die verformbaren Stege sind im entspannten Zustand jeweils gegenüber dem zugeordneten Isolierbereich vorzugsweise abgewinkelt. Der Winkel kann z. B. bei drei Stegen ca. 24° betragen.The insulating regions preferably extend substantially in the radial direction. The deformable webs are preferably angled in the relaxed state relative to the associated insulating region. The angle can z. B. at three bars about 24 °.

Die Vorrichtung zur Potentialtrennung kann in einer Ringkerndrossel mit dem Ringkern und mehreren voneinander zu trennenden Wicklungen eingesetzt werden, wobei die Anzahl der Isolierbereiche gleich der Anzahl der Wicklungen ist. Die verformbaren Stege sind nach dem Einsetzen im Kernloch in der Drehrichtung gespannt und üben eine elastische Kraft auf die Isolierbereiche aus, die in Richtung des Ringkerns wirkt. Dabei werden die Isolierbereich jeweils gegen die Innenwand des Ringkerns gedrückt.The device for electrical isolation can be separated in a toroidal core choke with the toroidal core and several Windings are used, wherein the number of insulating regions is equal to the number of windings. The deformable webs are stretched in the direction of rotation after insertion in the core hole and exert an elastic force on the insulating regions, which acts in the direction of the toroidal core. The insulating region is pressed against the inner wall of the toroidal core.

Der Durchmesser der Vorrichtung zur Potentialtrennung in einem entspannten Zustand ist größer als der Innendurchmesser des Ringkerns. In bevorzugter Variante bildet die Wicklung der Ringkerndrossel das Gegenlager bei der Auswicklung der Stege um das Mittelteil, wobei die Isolierbereiche jeweils an einer (in Umlaufrichtung nächstliegenden) Wicklung anliegen.The diameter of the device for potential separation in a relaxed state is greater than the inner diameter of the toroidal core. In a preferred variant, the winding of the toroidal core choke forms the counterbearing during the development of the webs around the central part, wherein the insulating regions in each case rest against a winding (closest in the direction of circulation).

Die Erfindung betrifft ferner ein Verfahren zur Herstellung einer Ringkerndrossel mit Potentialtrennung, das die folgenden Schritte aufweist:

  1. A) die Vorrichtung zur Potentialtrennung wird außerhalb des Kernlochs um eine Drehachse gedreht, bis die Isolierbereiche in Drehrichtung gegen die Wicklungen der Ringkerndrossel angeschlagen,
  2. B) das Mittelteil wird gegenüber den festgehaltenen Isolierbereichen weiter gedreht, wobei die Verformung der verformbaren Stege und die Verringerung des Durchmessers der Vorrichtung zur Potentialtrennung erfolgt,
  3. C) die Vorrichtung zur Potentialtrennung wird in das Kernloch des Ringkerns eingeführt, sobald der Durchmesser der Vorrichtung zur Potentialtrennung den Innendurchmesser des Ringkerns unterschreitet,
  4. D) die Vorrichtung zur Potentialtrennung federt zurück, bis sie im Kernloch eingespannt wird.
The invention further relates to a method for producing a toroidal core choke with potential separation, comprising the following steps:
  1. A) the device for electrical isolation is rotated outside the core hole about a rotation axis until the insulating regions struck in the direction of rotation against the windings of the toroidal core choke,
  2. B) the middle part is further rotated with respect to the detained insulating regions, wherein the deformation of the deformable webs and the reduction of the diameter of the device for electrical isolation takes place,
  3. C) the device for potential separation is introduced into the core hole of the toroidal core, as soon as the diameter of the device for potential separation falls below the inner diameter of the toroidal core,
  4. D) the device for potential separation springs back until it is clamped in the core hole.

In einer Variante wird das Mittelteil auf einen Drehdorn aufgesetzt und bei der Drehung mittels des Drehdorns kraftschlüssig angetrieben.In one variant, the middle part is placed on a rotary mandrel and driven non-positively during rotation by means of the rotary mandrel.

Beim Eindrehen der Potentialtrennvorrichtung in das Kernloch bleibt die radiale Ausrichtung der Isolierbereiche in jeder Position im Wesentlichen erhalten.When screwing the potential separation device in the core hole, the radial alignment of the insulating regions in each position is substantially retained.

Im folgenden wird die Erfindung anhand von Ausführungsbeispielen und der dazugehörigen Figuren näher erläutert. Die Figuren zeigen anhand schematischer und nicht maßstabsgetreuer Darstellungen verschiedene Ausführungsbeispiele der Erfindung. Gleiche oder gleich wirkende Teile sind mit gleichen Bezugszeichen bezeichnet. Es zeigen schematisch

  • Figur 1A eine Ansicht einer Vorrichtung zur Potentialtrennung von oben
  • Figur 1B eine Ansicht der Vorrichtung zur Potentialtrennung gemäß Figur 1A von der Seite
  • Figur 1C die Vorrichtung zur Potentialtrennung in einem nicht gespannten Zustand vor dem Einsetzen in das Kernloch
  • Figur 1D die Vorrichtung zur Potentialtrennung in einem vorspannten Zustand bei dem oder nach dem Einsetzen im Kernloch
  • Figur 2 eine Ringkerndrossel mit einer im Kernloch eingesetzten Vorrichtung zur Potentialtrennung
  • Figur 1A zeigt eine Vorrichtung zur Potentialtrennung, die ein Mittelteil 1 mit einem mittig angeordneten Durchbruch 12 zur Aufnahme eines führenden Elements einer externen Drehvorrichtung aufweist. Die Vorrichtung zur Potentialtrennung weist ferner drei Isolierbereiche 31, 32, 33 auf, die jeweils mittels eines dünnwandigen Stegs 21, 22, 23 fest mit dem Mittelteil 1 verbunden sind. Die Vorrichtung zur Potentialtrennung ist dabei einstückig ausgebildet.
In the following the invention will be explained in more detail with reference to embodiments and the accompanying figures. The figures show diagrammatic and not true to scale representations of various embodiments of the invention. Identical or equivalent parts are designated by the same reference numerals. It show schematically
  • Figure 1A a view of a device for electrical isolation from above
  • FIG. 1B a view of the device for potential separation according to Figure 1A of the page
  • Figure 1C the device for potential separation in a non-tensioned state before insertion into the core hole
  • FIG. 1D the device for potential separation in a biased state at or after insertion in the core hole
  • FIG. 2 a toroidal core choke with a device used in the core hole for potential separation
  • Figure 1A shows a device for potential separation, which is a central part 1 with a centrally located aperture 12 for receiving a leading element of an external rotating device having. The device for electrical isolation also has three insulating regions 31, 32, 33, which are each connected by means of a thin-walled web 21, 22, 23 fixed to the middle part 1. The device for electrical isolation is integrally formed.

Jeder Steg 21 bis 23 stellt eine dünne Wand dar, die parallel zur Drehachse ausgerichtet ist. Dadurch, dass die Stege 21 bis 23 dünnwandig ausgebildet sind, sind sie in einer Richtung, die in der quer zur Stegwand verlaufenden Ebene - der Drehebene - liegt, leicht verformbar.Each web 21 to 23 represents a thin wall, which is aligned parallel to the axis of rotation. Characterized in that the webs 21 to 23 are formed thin-walled, they are in a direction that lies in the plane transverse to the web wall plane - the plane of rotation - easily deformed.

Die Isolierbereiche 31 bis 33 sind jeweils in radialer Richtung ausgerichtet. Die Stege verlaufen dagegen gegenüber radialer Richtung bzw. gegenüber dem zugeordneten Isolierbereich schräg, wobei jeder im nicht vorgespannten Zustand geradlinig verlaufende Steg 21 bis 23 den ihm zugeordneten Isolierbereich 31 bis 33 und das Mittelteil 1 "diagonal" verbindet. Dadurch wird gegenüber der Ausrichtung in radialer Richtung eine größere Steglänge erzielt, was die Flexibilität des Stegs erhöht. Im Mittelteil 1 sind am Ansatz eines jeden Stegs Taschen 11 ausgebildet, die zu einer weiteren Verlängerung des jeweiligen Stegs dienen.The insulating regions 31 to 33 are each aligned in the radial direction. The webs, however, run obliquely with respect to the radial direction or with respect to the associated insulating region, wherein each non-biased state rectilinear web 21 to 23 connects its associated insulating region 31 to 33 and the middle part 1 "diagonal". As a result, compared to the alignment in the radial direction, a larger web length is achieved, which increases the flexibility of the web. In the middle part 1 pockets 11 are formed at the base of each web, which serve to further extend the respective web.

Der Durchbruch 12 ist hier prismenförmig bzw. im Querschnitt dreieckig ausgebildet und entlang der Drehachse ausgerichtet. Der Durchbruch oder auch eine diesem entsprechende Sacklochvertiefung kann einen anderen Querschnitt aufweisen, der zum Führen (beim Drehen) des Mittelteils 1 durch eine äußere Drehvorrichtung geeignet ist. Die Drehkraft wird von der Drehvorrichtung auf das Mittelteil 1 vorzugsweise formschlüssig übertragen. Die Ausbildung des Durchbruchs 12 mit (im Querschnitt) mindestens drei Eckpunkten ist dabei besonders vorteilhaft. Möglich ist aber auch, den Durchbruch 12 mit in der Drehebene unterschiedlich langen Achsen (z. B. als Ellipsoid oder Rechteck) auszubilden. Das führende Element der Drehvorrichtung kann, muss aber nicht formschlüssig im Durchbruch 12 angeordnet sein.The breakthrough 12 is here prismatic or triangular in cross section and aligned along the axis of rotation. The aperture or a blind hole corresponding thereto may have a different cross section, which is suitable for guiding (during rotation) of the central part 1 by an external turning device. The rotational force is preferably transmitted by the rotary device to the middle part 1 in a form-fitting manner. The formation of the opening 12 with (in cross-section) at least three vertices is special advantageous. However, it is also possible to form the aperture 12 with axes of different lengths in the plane of rotation (eg as ellipsoid or rectangle). The leading element of the rotating device may, but need not be arranged form-fitting in the opening 12.

Vorteilhaft ist eine Vorrichtung zur Potentialtrennung, bei der die Isolierbereiche bzw. Stege zueinander immer den gleichen Winkel 360°/n - bei drei Stegen 120° - aufweisen, wobei n ≥ 2 die Anzahl der Isolierbereiche bzw. der Stege ist.Advantageously, a device for electrical isolation, in which the insulating regions or webs to each other always the same angle 360 ° / n - at three bars 120 ° - have, where n ≥ 2 is the number of insulating regions or the webs.

Die Wandstärke der Stege kann je nach Durchmesser des vorgesehenen Kernlochs z. B. zwischen 0,5 mm und 1 mm betragen. Die Wandstärke der Stege kann auch je nach Ausführung kleiner als 0,5 mm oder größer als 1 mm gewählt sein. Die Steglänge ist vorzugsweise mindestens fünfmal größer als seine Wandstärke. Die Wandstärke der Isolierbereiche unterschreitet vorzugsweise nicht den Wert von 2 mm.The wall thickness of the webs may vary depending on the diameter of the intended core hole z. B. between 0.5 mm and 1 mm. The wall thickness of the webs can also be selected depending on the design smaller than 0.5 mm or larger than 1 mm. The web length is preferably at least five times greater than its wall thickness. The wall thickness of the insulating regions preferably does not fall below the value of 2 mm.

Die Höhe der Potentialtrennvorrichtung richtet sich nach der Höhe des Ringkerns, in dem die Potentialtrennvorrichtung fixiert werden soll.The height of the potential separation device depends on the height of the toroidal core in which the potential separation device is to be fixed.

In Figur 1B ist eine schematische Seitenansicht der in Figur 1A gezeigten Vorrichtung vorgestellt. Die Länge der Potentialtrennvorrichtung in einer parallel zur Drehachse verlaufenden Längsrichtung übersteigt in dieser Variante die vorgesehene Höhe des Ringkerns. In Endbereichen von Isolierbereichen 31, 32, 33, auf verschiedener Höhe entlang der Längsrichtung sind Vorsprünge 311, 312; 321, 322 bzw. 331, 332 ausgebildet, zwischen denen der Ringkern der Ringkerndrossel in Längsrichtung fixiert werden kann.In FIG. 1B is a schematic side view of in Figure 1A presented device presented. The length of the potential separation device in a longitudinal direction extending parallel to the axis of rotation exceeds in this variant the intended height of the toroidal core. In end regions of insulating regions 31, 32, 33, at different heights along the longitudinal direction, projections 311, 312; 321, 322 and 331, 332 formed, between which the ring core of the toroidal core choke can be fixed in the longitudinal direction.

Die Länge der Potentialtrennvorrichtung in Längsrichtung kann in einer weiteren Variante die vorgesehene Höhe des Ringkerns unterschreiten oder dieser gleichen. In diesem Fall kann auf die fixierenden Vorsprünge 311, 312, 321, 322 sogar verzichtet werden. In einer Variante können die Vorsprünge 311, 312, 321, 322 gegen die Innenwand des Ringkerns drücken und so die Potentialtrennvorrichtung im Kernloch fixieren.The length of the potential separation device in the longitudinal direction may fall below the intended height of the toroidal core in a further variant or the same. In this case, the fixing projections 311, 312, 321, 322 can even be dispensed with. In a variant, the projections 311, 312, 321, 322 can press against the inner wall of the toroidal core and thus fix the potential separation device in the core hole.

In Figur 1C ist die Potentialtrennvorrichtung in einem nicht vorgespannten Zustand bzw. vor dem Einsetzten im Kernloch gezeigt, wobei der Durchmesser 51 eines die nicht vorgespannte Potentialtrennvorrichtung umfassenden Kreises größer als der vorgesehene Durchmesser 52 des Kernlochs ist. Die Stege 21 bis 23 verlaufen geradlinig.In Figure 1C For example, the potential separator is shown in a non-biased condition prior to insertion in the core hole, wherein the diameter 51 of a circle comprising the non-biased potential separator is greater than the intended diameter 52 of the core hole. The webs 21 to 23 are straight.

In Figur 1D ist die Potentialtrennvorrichtung in einem vorgespannten Zustand bzw. nach dem Einsetzen im Kernloch gezeigt, wobei der Durchmesser eines die vorgespannte Potentialtrennvorrichtung umfassenden Kreises dem Durchmesser 52 des Kernlochs gleicht. Mit Pfeilen ist die Versatzrichtung 61 der Isolierbereiche 31 bis 33 sowie die Drehrichtung 62 gezeigt.In FIG. 1D For example, the potential divider is shown in a pre-stressed state after insertion in the core hole, wherein the diameter of a circle comprising the pre-stressed potential divider equals the diameter 52 of the core hole. Arrows indicate the offset direction 61 of the insulating regions 31 to 33 and the direction of rotation 62.

Die Isolierbereiche 31 bis 33 werden bei der Drehung des Mittelteils 1 vorzugsweise durch eine Drahtwicklung (siehe Figur 2) fest gehalten, wodurch die Verformung der Stege 21 bis 23 erfolgt. Durch die Verformung eines Stegs, z. B. des Stegs 21, wird der entsprechende Isolierbereich 31 zum Zentrum der Vorrichtung verschoben. Die Versatzrichtung 61 der Isolierbereiche 31 bis 33 entspricht dabei einer radialen Richtung.The insulating regions 31 to 33 are preferably formed during the rotation of the central part 1 by a wire winding (see FIG. 2 ), whereby the deformation of the webs 21 to 23 is carried out. By the deformation of a web, z. B. of the web 21, the corresponding insulating region 31 is moved to the center of the device. The offset direction 61 of the insulating regions 31 to 33 corresponds to a radial direction.

Sobald der Durchmesser der Potentialtrennvorrichtung den Durchmesser des Kernlochs erreicht, wird die Potentialtrennvorrichtung in das Kernloch hineingeschoben. Die Stege 21 bis 23 bleiben dabei in einem gespannten Zustand und üben auf die Isolierbereiche 31 bis 33 eine elastische Kraft aus, die in radialer Richtung gegen den Ringkern wirkt und so die Potentialtrennvorrichtung im Kernloch fixiert.As soon as the diameter of the potential separation device reaches the diameter of the core hole, the potential separation device is pushed into the core hole. The webs 21 to 23 remain in a tensioned state and exert on the insulating regions 31 to 33 an elastic force acting in the radial direction against the toroidal core, thus fixing the potential separation device in the core hole.

Die Erfindung ist nicht auf die in Figuren erläuterten Ausführungsbeispiele, insbesondere die Form oder die Anzahl der dargestellten Elemente beschränkt. Beliebig viele Stege bzw. Isolierbereiche sind möglich.The invention is not limited to the exemplary embodiments explained in FIGS., In particular the shape or the number of illustrated elements. Any number of webs or insulating areas are possible.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Mittelteilmidsection
1111
Taschebag
1212
Durchbruchbreakthrough
21,21
22, 23 verformbare Stege22, 23 deformable webs
31,31
32, 33 Isolierbereiche32, 33 insulating areas
311,311
312, 321, 322, 331, 332 Vorsprünge zum Fixieren des Ringkerns312, 321, 322, 331, 332 projections for fixing the toroidal core
41,41
42, 43 Wicklungen42, 43 windings
4444
Ringkerntoroidal
5151
Durchmesser der Vorrichtung vor dem Einsetzen im KernlochDiameter of the device before insertion in the core hole
5252
Durchmesser der Vorrichtung nach dem Einsetzen im KernlochDiameter of the device after insertion in the core hole
6161
radiale Richtungradial direction
6262
Drehrichtungdirection of rotation

Claims (15)

  1. Device for potential separation for installation in the core hole of a toroidal core (44) comprising:
    a centre part (1),
    at least two webs (21, 22, 23), which run outwards, can be deformed elastically, can be wound around the centre part (1) and comprise a rigid isolating area (31, 32, 33) in each case at their end remote from the centre part (1).
  2. Device for potential separation according to Claim 1, comprising a device (11, 12) which is formed on the centre part (1) for force-fitting connection of a mandrel.
  3. Device for potential separation according to Claim 2,
    wherein the device is in the form of a depression, which is formed in the centre part (1) and is directed along a rotation axis, for force-fitting connection of a mandrel.
  4. Device for potential separation according to Claim 2,
    wherein the device is in the form of an aperture (12) which is formed in the centre part (1) and is directed along a rotation axis, for force-fitting connection of a mandrel.
  5. Device for potential separation according to one of Claims 1 to 4,
    wherein pockets (11) are provided on the centre part (1) with a part of a deformable web (21) forming the outer wall of one pocket (11).
  6. Device for potential separation according to Claim 5,
    wherein the pockets (11) run essentially in the circumferential direction on the plane of rotation.
  7. Device for potential separation according to one of Claims 1 to 6,
    wherein the isolating areas (31, 32, 33) each comprise projections (311, 312, 321, 322, 331, 332) for the toroidal core (44) to latch in the device for potential separation.
  8. Device for potential separation according to one of Claims 1 to 7,
    wherein the isolating areas (31, 32, 33) run essentially radially.
  9. Device for potential separation according to one of Claims 1 to 8,
    wherein the deformable webs (21, 22, 23) are at an angle to the respectively corresponding associated isolating area (31, 32, 33).
  10. Device for potential separation according to one of Claims 1 to 9,
    which is formed integrally.
  11. Toroidal core throttle
    comprising a toroidal core (44) and a plurality of windings (41, 42, 43) which are isolated from one another by an device for potential separation according to one of Claims 1 to 10,
    wherein the deformable webs (21, 22, 23) are stressed by winding them around the centre part (1), in the process exerting an elastic force on the isolating areas (31, 32, 33) acting in the radial direction.
  12. Toroidal core throttle according to Claim 11,
    wherein the isolating areas (31, 32, 33) rest on a respective one of the windings (41, 42, 43).
  13. Toroidal core throttle according to Claim 11 or 12,
    wherein the diameter of the device for potential separation is greater in an unstressed state than the internal diameter of the toroidal core (44).
  14. Method for producing a toroidal core throttle according to one of Claims 11 to 13, comprising the following steps:
    A) the device for potential separation is rotated outside the core hole about the rotation axis until the isolating areas (31, 32, 33) strike the windings (41, 42, 43) of the toroidal core throttle in the rotation direction,
    B) the centre part (1) is rotated further with respect to the stationary isolating areas (31, 32, 33), with the deformable webs (21, 22, 23) being deformed and the diameter of the device for potential separation being reduced,
    C) the device for potential separation is inserted into the core hole in the toroidal core (44) as soon as the diameter of the device for potential separation is less than the internal diameter of the toroidal core (44),
    D) the device for potential separation springs back.
  15. Method according to Claim 14,
    wherein the centre part (1) is placed on a rotating device and is driven by means of the rotating device during rotation.
EP05782179A 2004-10-07 2005-06-30 Device for potential separation, toroidal core throttle, and method for producing a toroidal core throttle Active EP1797572B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004048966A DE102004048966A1 (en) 2004-10-07 2004-10-07 Device for electrical isolation, toroidal core choke and method for producing the toroidal core choke
PCT/DE2005/001154 WO2006039876A1 (en) 2004-10-07 2005-06-30 Device for potential separation, toroidal core throttle, and method for producing a toroidal core throttle

Publications (2)

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EP1797572A1 EP1797572A1 (en) 2007-06-20
EP1797572B1 true EP1797572B1 (en) 2008-04-09

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EP05782179A Active EP1797572B1 (en) 2004-10-07 2005-06-30 Device for potential separation, toroidal core throttle, and method for producing a toroidal core throttle

Country Status (6)

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US (1) US7400224B2 (en)
EP (1) EP1797572B1 (en)
JP (1) JP4582668B2 (en)
CN (1) CN101036203B (en)
DE (2) DE102004048966A1 (en)
WO (1) WO2006039876A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011061258A2 (en) 2009-11-19 2011-05-26 Epcos Ag Device for electrical isolation and toroidal core choke

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004039230A1 (en) 2004-08-12 2006-02-23 Epcos Ag Inductive component for high currents and method for its production
DE102005006344A1 (en) * 2005-02-11 2006-08-17 Epcos Ag Insulating part and toroidal core choke
DE102005010342A1 (en) * 2005-03-07 2006-09-14 Epcos Ag Inductive component
DE102005027943A1 (en) * 2005-06-16 2006-12-28 Epcos Ag Carrier device for a toroidal core choke, holder for an inductive component and inductive component
DE102005027942A1 (en) * 2005-06-16 2006-12-28 Epcos Ag Holding device, carrier device for a toroidal core choke and inductive component
TWI394185B (en) * 2009-07-01 2013-04-21 Delta Electronics Inc Magnetic component and assembling method thereof
JP5967472B2 (en) * 2012-04-20 2016-08-10 日立金属株式会社 Coil parts
CN103515057B (en) * 2012-06-26 2016-04-13 立讯精密工业股份有限公司 The manufacture method of magnetic module
DE102016206171A1 (en) * 2016-04-13 2017-10-19 Würth Elektronik eiSos Gmbh & Co. KG Separating element for a toroidal core choke and toroidal core choke

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3047603A1 (en) * 1980-12-17 1982-07-22 Siemens AG, 1000 Berlin und 8000 München Winding separator for two coils on ring core - with axial slits to give spring effect to assist fitting into ring
JPS60179013U (en) * 1984-05-08 1985-11-28 株式会社村田製作所 Insulation case for toroidal magnetic core
JPH0246018Y2 (en) * 1985-01-14 1990-12-05
DE3782987D1 (en) * 1986-08-01 1993-01-21 Siemens Ag POTENTIAL SEPARATION FOR A RING CORDLE.
JPH0648808Y2 (en) * 1989-02-15 1994-12-12 株式会社トーキン Common mode choke coil
JPH0945539A (en) * 1995-07-31 1997-02-14 Tokin Corp Common-mode choke coil
JPH09237717A (en) * 1996-02-28 1997-09-09 Tokin Corp Common mode choke coil
JP2000208343A (en) * 1999-01-19 2000-07-28 Okaya Electric Ind Co Ltd Common mode choke coil
DE19932475C2 (en) * 1999-07-12 2002-04-25 Vacuumschmelze Gmbh Inductive component
JP2002198236A (en) * 2000-12-27 2002-07-12 Minebea Co Ltd Common-mode choke coil
JP2003297650A (en) * 2002-04-04 2003-10-17 Hokuriku Denki Seizo Kk Common mode choke coil
DE10223995C1 (en) * 2002-05-29 2003-11-27 Epcos Ag Coil body for annular choke coil has wire guide devices at its ends for maintaining wire windings in required pattern
DE10308010A1 (en) * 2003-02-25 2004-09-09 Epcos Ag Insulating part, toroidal core, toroidal core choke and method for producing the toroidal core choke

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011061258A2 (en) 2009-11-19 2011-05-26 Epcos Ag Device for electrical isolation and toroidal core choke
DE102009054001A1 (en) 2009-11-19 2011-08-04 Epcos Ag, 81669 Device for potential separation and toroidal core choke

Also Published As

Publication number Publication date
CN101036203A (en) 2007-09-12
EP1797572A1 (en) 2007-06-20
WO2006039876A1 (en) 2006-04-20
DE102004048966A1 (en) 2006-04-13
JP4582668B2 (en) 2010-11-17
DE502005003679D1 (en) 2008-05-21
US20070241855A1 (en) 2007-10-18
CN101036203B (en) 2012-05-23
US7400224B2 (en) 2008-07-15
JP2008516430A (en) 2008-05-15

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