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EP1797572B1 - Dispositif de separation de potentiel, bobine a noyau toroidal et procede pour produire une bobine a noyau toroidal - Google Patents

Dispositif de separation de potentiel, bobine a noyau toroidal et procede pour produire une bobine a noyau toroidal 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
Authority
EP
European Patent Office
Prior art keywords
potential separation
toroidal core
centre part
potential
core
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.)
Active
Application number
EP05782179A
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German (de)
English (en)
Other versions
EP1797572A1 (fr
Inventor
Günter FEIST
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.)
TDK Electronics AG
Original Assignee
Epcos AG
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 Epcos AG filed Critical Epcos AG
Publication of EP1797572A1 publication Critical patent/EP1797572A1/fr
Application granted granted Critical
Publication of EP1797572B1 publication Critical patent/EP1797572B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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.

Landscapes

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

Claims (15)

  1. Dispositif de séparation de potentiel à monter dans le trou de noyau d'un noyau toroïdal (44), comprenant :
    une partie centrale (1),
    au moins deux entretoises (21, 22, 23) enroulables autour de la partie centrale (1), élastiquement déformables et s'étendant vers l'extérieur, qui ont chacune sur l'extrémité éloignée de la partie centrale (1) une zone isolante (31, 32, 33) rigide.
  2. Dispositif de séparation de potentiel selon la revendication 1, ayant un dispositif (11, 12) formé sur la partie centrale (1) pour le rattachement par coopération de force d'un mandrin de tournage.
  3. Dispositif de séparation de potentiel selon la revendication 2, le dispositif étant conformé pour le rattachement par coopération de force d'un mandrin de rotation, sous la forme d'une cavité réalisée dans la partie centrale (1) et dirigée le long d'un axe de rotation.
  4. Dispositif de séparation de potentiel selon la revendication 2, le dispositif étant conformé pour le rattachement par coopération de force d'un mandrin de rotation, sous la forme d'un percement (12) réalisé dans la partie centrale (1) et orienté le long d'un axe de rotation.
  5. Dispositif de séparation de potentiel selon l'une quelconque des revendications 1 à 4,
    des poches (11) étant formées sur la partie centrale (1), une partie d'une entretoise (21) déformable formant la paroi extérieure d'une poche (11).
  6. Dispositif de séparation de potentiel selon la revendication 5, les poches (11) s'étendant dans le plan de rotation sensiblement dans la direction périphérique.
  7. Dispositif de séparation de matériel selon l'une quelconque des revendications 1 à 6, les zones isolantes (31, 32, 33) ayant chacune des saillies (311, 312, 321, 322, 331, 332) pour l'encliquetage du noyau toroïdal (44) dans le dispositif de séparation de potentiel.
  8. Dispositif de séparation de potentiel selon l'une quelconque des revendications 1 à 7, les zones isolantes (31, 32, 33) étant sensiblement radiales.
  9. Dispositif de séparation de potentiel selon l'une quelconque des revendications 1 à 8,
    les entretoises (21, 22, 23) déformables étant coudées par rapport à la zone isolante (31, 32, 33) associée respectivement.
  10. Dispositif de séparation de potentiel selon l'une quelconque des revendications 1 à 9,
    qui est d'une seule pièce.
  11. Bobine à noyau toroïdal,
    comprenant un noyau toroïdal (44) et plusieurs enroulements (41, 42, 43) séparés les uns des autres par un dispositif de séparation de potentiel selon l'une quelconque des revendications 1 à 10, les entretoises (21, 22, 23) déformables étant tendues par l'enroulement autour de la partie centrale (1) et exerçant alors une force élastique sur les zones isolantes (31, 32, 33), qui agit dans le sens radial.
  12. Bobine à noyau toroïdal selon la revendication 11,
    les zones isolantes (31, 32, 33) s'appuyant respectivement sur l'un des enroulements (41, 42, 43).
  13. Bobine à noyau toroïdal selon la revendication 11 ou 12,
    le diamètre du dispositif de séparation de potentiel étant supérieur dans l'état tendu au diamètre intérieur du noyau toroïdal (44).
  14. Procédé pour la fabrication d'une bobine à noyau toroïdal selon l'une quelconque des revendications 11 à 13 comprenant les étapes suivantes :
    A) le dispositif de séparation de potentiel est tourné à l'extérieur du trou de noyau autour de l'axe de rotation jusqu'à ce que les zones isolantes (31, 32, 33) butent dans le sens de rotation contre les enroulements (41, 42, 43) de la bobine à noyau toroïdal,
    B) la partie centrale (1) est tournée encore par rapport aux zones isolantes (31, 32, 33) maintenues, la déformation des entretoises (21, 22, 23) déformables et la réduction du diamètre du dispositif de séparation de potentiel intervenant,
    C) le dispositif de séparation de potentiel est introduit dans le trou de noyau du noyau toroïdal (44) dès que le diamètre du dispositif de séparation de potentiel passe au-dessous du diamètre intérieur du noyau toroïdal (44),
    D) le dispositif de séparation de potentiel revient élastiquement.
  15. Procédé selon la revendication 14,
    la partie centrale (1) étant posée sur un dispositif de rotation et étant entraînée lors de la rotation au moyen du dispositif de rotation.
EP05782179A 2004-10-07 2005-06-30 Dispositif de separation de potentiel, bobine a noyau toroidal et procede pour produire une bobine a noyau toroidal Active EP1797572B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004048966A DE102004048966A1 (de) 2004-10-07 2004-10-07 Vorrichtung zur Potentialtrennung, Ringkerndrossel und Verfahren zur Herstellung der Ringkerndrossel
PCT/DE2005/001154 WO2006039876A1 (fr) 2004-10-07 2005-06-30 Dispositif de separation de potentiel, bobine a noyau toroidal et procede pour produire une bobine a noyau toroidal

Publications (2)

Publication Number Publication Date
EP1797572A1 EP1797572A1 (fr) 2007-06-20
EP1797572B1 true EP1797572B1 (fr) 2008-04-09

Family

ID=35840143

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05782179A Active EP1797572B1 (fr) 2004-10-07 2005-06-30 Dispositif de separation de potentiel, bobine a noyau toroidal et procede pour produire une bobine a noyau toroidal

Country Status (6)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011061258A2 (fr) 2009-11-19 2011-05-26 Epcos Ag Dispositif de séparation de potentiel et bobine de choc à noyau toroïdal

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004039230A1 (de) 2004-08-12 2006-02-23 Epcos Ag Induktives Bauelement für hohe Ströme und Verfahren zu dessen Herstellung
DE102005006344A1 (de) 2005-02-11 2006-08-17 Epcos Ag Isolierteil und Ringkerndrossel
DE102005010342A1 (de) * 2005-03-07 2006-09-14 Epcos Ag Induktives Bauelement
DE102005027943A1 (de) * 2005-06-16 2006-12-28 Epcos Ag Trägervorrichtung für eine Ringkerndrossel, Halterung für ein induktives Bauelement und induktives Bauelement
DE102005027942A1 (de) * 2005-06-16 2006-12-28 Epcos Ag Haltevorrichtung, Trägervorrichtung für eine Ringkerndrossel und induktives Bauelement
TWI394185B (zh) * 2009-07-01 2013-04-21 Delta Electronics Inc 磁性組件及其組裝方法
JP5967472B2 (ja) * 2012-04-20 2016-08-10 日立金属株式会社 コイル部品
CN103515057B (zh) * 2012-06-26 2016-04-13 立讯精密工业股份有限公司 磁性模组的制造方法
DE102016206171A1 (de) * 2016-04-13 2017-10-19 Würth Elektronik eiSos Gmbh & Co. KG Trennelement für eine Ringkerndrossel und Ringkerndrossel

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3047603A1 (de) * 1980-12-17 1982-07-22 Siemens AG, 1000 Berlin und 8000 München Ringkerndrossel
JPS60179013U (ja) * 1984-05-08 1985-11-28 株式会社村田製作所 トロイダル磁心用絶縁ケ−ス
JPH0246018Y2 (fr) * 1985-01-14 1990-12-05
EP0258592B1 (fr) * 1986-08-01 1992-12-09 Siemens Aktiengesellschaft Séparation de potentiel pour une bobine de réactance à noyau annulaire
JPH0648808Y2 (ja) * 1989-02-15 1994-12-12 株式会社トーキン コモンモードチョークコイル
JPH0945539A (ja) * 1995-07-31 1997-02-14 Tokin Corp コモンモードチョークコイル
JPH09237717A (ja) * 1996-02-28 1997-09-09 Tokin Corp コモンモードチョークコイル
JP2000208343A (ja) * 1999-01-19 2000-07-28 Okaya Electric Ind Co Ltd コモンモ―ドチョ―クコイル
DE19932475C2 (de) * 1999-07-12 2002-04-25 Vacuumschmelze Gmbh Induktives Bauelement
JP2002198236A (ja) * 2000-12-27 2002-07-12 Minebea Co Ltd コモンモードチョークコイル
JP2003297650A (ja) * 2002-04-04 2003-10-17 Hokuriku Denki Seizo Kk コモンモードチョークコイル
DE10223995C1 (de) * 2002-05-29 2003-11-27 Epcos Ag Spulenkörper und Kerndrossel mit dem Spulenkörper
DE10308010A1 (de) * 2003-02-25 2004-09-09 Epcos Ag Isolierteil, Ringkern, Ringkerndrossel und Verfahren zur Herstellung der Ringkerndrossel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011061258A2 (fr) 2009-11-19 2011-05-26 Epcos Ag Dispositif de séparation de potentiel et bobine de choc à noyau toroïdal
DE102009054001A1 (de) 2009-11-19 2011-08-04 Epcos Ag, 81669 Vorrichtung zur Potentialtrennung und Ringkerndrossel

Also Published As

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

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