EP1797572A1 - 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

Info

Publication number
EP1797572A1
EP1797572A1 EP05782179A EP05782179A EP1797572A1 EP 1797572 A1 EP1797572 A1 EP 1797572A1 EP 05782179 A EP05782179 A EP 05782179A EP 05782179 A EP05782179 A EP 05782179A EP 1797572 A1 EP1797572 A1 EP 1797572A1
Authority
EP
European Patent Office
Prior art keywords
potential separation
toroidal core
central part
core
rotation
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.)
Granted
Application number
EP05782179A
Other languages
German (de)
English (en)
Other versions
EP1797572B1 (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

Links

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 Cl 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.
  • the object of the present invention is to provide a device for potential separation, which is inexpensive to manufacture and can be 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 e- elastically deformable webs, the aufwei ⁇ each at its end facing away from the Mittel ⁇ or facing the toroidal end a vor ⁇ preferably radially extending, rigid insulating aufwei ⁇ sen.
  • the insulating region is preferably thickened relative to the web associated therewith.
  • the device for electrical isolation is preferably formed ein ⁇ 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 turned 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, the diameter of the potentiometer being reduced.
  • any plastics are suitable which are preferably heat-resistant or fire-resistant.
  • a device is preferably provided for frictional connection of a rotary mandrel, which in a variant has a central part formed 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 frictional connection of a rotary mandrel may alternatively have a plurality of recesses formed on the central part and oriented parallel to the axis of rotation for receiving a plurality of rotary mandrels.
  • the outer wall of a bag preferably forms a 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 can each have projections for latching the toroidal core, which prevent slipping of the potential separating device in the longitudinal direction (parallel to the axis of rotation).
  • These protrusions are preferably provided (when viewed in the longitudinal direction) at both ends of the respective insulating region, a recess being formed in the insulating region 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 Ste ⁇ conditions about 24 °.
  • the device for potential separation can be connected in a toroidal inductor with the toroidal core and a plurality of separate the windings are used, wherein the number of Iso ⁇ lier Suitee is equal to the number of windings.
  • the deformable webs are stretched after insertion in the core hole in the direction of rotation and exert an elastic force on the insulating regions, which acts in the direction of the toroidal core. Da ⁇ in the insulating region are each 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 invention further relates to a method for producing a toroidal core choke with potential separation, which has the following steps:
  • the device for electrical isolation is rotated outside the core hole about an axis of rotation until the insulating regions An ⁇ beaten in the direction of rotation against the windings of the toroidal core choke,
  • the middle part is further rotated in relation to the detained insulating regions, the deformation of the deformable webs and the reduction of the diameter of the device for potential separation taking place,
  • 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 undershoots the inner diameter of the toroidal core
  • the middle part is placed on a rotary mandrel and driven in a force-locking manner during rotation by means of the rotary mandrel.
  • Figure IA is a view of a device for potential separation from above
  • Figure IB is a view of the device for electrical isolation of Figure IA from the side
  • Figure IC the device for potential separation in a non-tensioned state before insertion into the core hole
  • FIG. 1D shows the device for potential separation in a prestressed state during or after insertion in the core hole
  • FIG. 2 shows a toroidal core choke with a device inserted in the core hole for potential separation
  • FIG. 1A shows a device for potential separation, which has a center part 1 with a centrally arranged opening 12 for receiving a leading element of an external rotation device. direction.
  • 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 fixedly connected to the center part 1 Mit ⁇ .
  • the device for potential separation is integrally formed.
  • Each web 21 to 23 represents a thin wall, which is aligned parallel to the axis of rotation. Because the webs 21 to 23 have a thin-walled construction, they are easily deformable in a direction which lies in the plane running transversely to the web wall-the plane of rotation.
  • 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 web 21 to 23 which extends in a straight state when not prestressed connects the insulating region 31 to 33 assigned to it and the middle part 1 "diagonally"
  • a greater web length is achieved in comparison with the alignment in the radial direction, which increases the flexibility of the web 11.
  • pockets 11 are formed at the shoulder 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 else a blind hole recess corresponding thereto can have a different cross section, which is suitable for guiding (during rotation) of the middle part 1 by an external turning device.
  • the rotational force is preferably transmitted formschlüs ⁇ sig of the rotating device to the central part 1.
  • 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 opening 12 with axes of different lengths in the plane of rotation (eg as an ellipsoid or rectangle).
  • the leading element of the rotating device can, but need not be arranged in a form-fitting manner in Mandarin ⁇ break 12.
  • a device for electrical isolation in which the insulating regions or webs to each other always the same angle 360 ° / n - at three webs 120 ° - have, where n _> 2 is the number of insulating regions or webs.
  • the wall thickness of the webs can, depending on the diameter of the vorge provided 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 fi xed.
  • FIG. 1B shows a schematic side view of the device shown in FIG.
  • the length of the Potenti ⁇ altrennvoriques in a direction parallel to the axis of rotation verlauf ⁇ the longitudinal direction exceeds in this variant, the vorgese ⁇ hene height of the toroidal core.
  • projections 311, 312; 321, 322 and 331, 332, 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 protrusions 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 separation device is shown in a non-prestressed state or before insertion into the core hole, wherein the diameter 51 of a circle comprising the non-prestressed potential separation device is greater than the intended diameter 52 of the core hole.
  • the webs 21 to 23 are straight.
  • the potential separation device is shown in a pre-stressed state or after insertion in the core hole, wherein the diameter of a circle enclosing the prestressed potential separation device 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 held firmly during the rotation of the middle part 1, preferably by a wire winding (see FIG. 2), whereby the deformation of the webs 21 to 23 takes place.
  • a wire winding see FIG. 2
  • the corresponding insulating region 31 is moved to the center of the device.
  • the offset direction 61 of the Isolierbe ⁇ rich 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 and so fixed the Poten ⁇ tialtrennvorraum 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)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Insulating Of Coils (AREA)
  • Transformers For Measuring Instruments (AREA)

Abstract

La présente invention concerne un dispositif de séparation de potentiel qui est conçu pour être monté dans le trou de noyau d'un noyau toroïdal (44). Ce dispositif comprend une partie médiane (1) qui présente un axe de rotation, ainsi que des ailettes (21, 22, 23) qui s'étendent vers l'extérieur, peuvent être déformées dans le sens de rotation (62) autour de l'axe de rotation et présentent respectivement à leur extrémité opposée à la partie médiane (1) une zone d'isolation (31, 32, 33) s'étendant de préférence dans la direction radiale et présentant une épaisseur plus importante par rapport aux ailettes (21, 22, 23).
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 true EP1797572A1 (fr) 2007-06-20
EP1797572B1 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
WO2011061258A3 (fr) * 2009-11-19 2011-07-14 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
DE102005027942A1 (de) * 2005-06-16 2006-12-28 Epcos Ag Haltevorrichtung, Trägervorrichtung für eine Ringkerndrossel und induktives Bauelement
DE102005027943A1 (de) * 2005-06-16 2006-12-28 Epcos Ag Trägervorrichtung für eine Ringkerndrossel, Halterung für ein induktives Bauelement 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)

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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

Non-Patent Citations (1)

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Title
See references of WO2006039876A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011061258A3 (fr) * 2009-11-19 2011-07-14 Epcos Ag Dispositif de séparation de potentiel et bobine de choc à noyau toroïdal

Also Published As

Publication number Publication date
DE502005003679D1 (de) 2008-05-21
US20070241855A1 (en) 2007-10-18
JP2008516430A (ja) 2008-05-15
WO2006039876A1 (fr) 2006-04-20
DE102004048966A1 (de) 2006-04-13
CN101036203B (zh) 2012-05-23
JP4582668B2 (ja) 2010-11-17
US7400224B2 (en) 2008-07-15
EP1797572B1 (fr) 2008-04-09
CN101036203A (zh) 2007-09-12

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