EP2502243B1 - Dispositif de séparation de potentiel et bobine de choc à noyau toroïdal - Google Patents

Dispositif de séparation de potentiel et bobine de choc à noyau toroïdal Download PDF

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Publication number
EP2502243B1
EP2502243B1 EP10778665.9A EP10778665A EP2502243B1 EP 2502243 B1 EP2502243 B1 EP 2502243B1 EP 10778665 A EP10778665 A EP 10778665A EP 2502243 B1 EP2502243 B1 EP 2502243B1
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EP
European Patent Office
Prior art keywords
toroidal core
portions
insulating regions
central region
webs
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
EP10778665.9A
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German (de)
English (en)
Other versions
EP2502243A2 (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
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Publication date
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Publication of EP2502243A2 publication Critical patent/EP2502243A2/fr
Application granted granted Critical
Publication of EP2502243B1 publication Critical patent/EP2502243B1/fr
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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
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/12—Insulating of windings
    • H01F41/125—Other insulating structures; Insulating between coil and core, between different winding sections, around the coil

Definitions

  • the invention relates to a device for potential separation for installation in a core hole of a toroidal core.
  • the application relates to a toroidal core choke, which has a toroidal core, a device for potential separation and at least two windings electrically insulated from one another by the device.
  • Ring core chokes with arranged on a toroidal windings are widely known.
  • the problem basically arises of electrically separating the individual windings from one another.
  • the device for potential separation described therein comprises a central part and three outwardly extending, elastically deformable webs which can be wound around the middle part and each have a rigid insulating region at their end facing away from the middle part. By rotating the central part relative to the insulating regions, the device is adapted to the inner diameter of different toroidal cores.
  • the object of the present invention is to describe an easily manufactured and to be mounted device for potential separation for installation in a core hole of a toroidal core, wherein the device should be adapted to compensate for tolerances in the diameter of the core hole of the toroidal core.
  • the device should also be suitable for stable installation in the core hole of a toroidal core with only two windings.
  • a cylindrical reference system is used to denote the different directions.
  • the direction from the center of a core hole in the direction of the circumference of a toroidal core is referred to as radial
  • the direction of the rotational axis of symmetry of the toroidal core as axial
  • the direction orthogonal in each point to these two directions as tangential.
  • the device has a central region and two insulating regions projecting from the central region in the radial direction of the core hole and movable in the radial direction.
  • the central region has a compression zone with at least two mutually parallel first sections of two webs, which mechanically couple the two insulating regions together.
  • Each of the at least two first sections is elastically deformable S-shaped, wherein the at least two first portions of the two webs are arranged parallel to each other in the relaxed state of the compression zone.
  • each of the two webs further each having a second portion, wherein the at least two first portions and the two second portions of the two webs in the relaxed state of the compression zone form the sides of a parallelogram.
  • Such, preferably centrally arranged rhomboid allows kink-free compression of the compression zone.
  • the at least two first portions have a smaller material thickness than the second portions, so that upon movement of the insulating regions in the radial direction, at least two of the first portions are deformed in an S-shape and the second portions are displaced substantially parallel to each other.
  • the device is integrally formed.
  • it can be particularly simple and inexpensively manufactured as an injection molded part.
  • the device has two with respect to the central region opposite insulating regions, so that the device has the shape of a compressible in length web.
  • An embodiment of the device in the form of a longitudinally compressible separating web with two opposing insulating regions is particularly suitable for use in toroidal core chokes with two windings, for example for a line filter with a phase conductor and a neutral conductor.
  • the insulating regions protrude beyond an associated part of the central region in the tangential direction of the core hole. In this way, a desired insulation distance between adjacent windings of the toroidal core can be adjusted independently of the material thickness of the device for potential separation in the central region.
  • the insulating regions each have a cavity.
  • the use of a cavity allows for material savings in the formation of insulating regions having a relatively large insulation distance.
  • the device has at least one holding part with at least one latching element for latching the device with a holder for receiving the toroidal core choke.
  • a holding part allows the locking of the toroidal core choke on a circuit board or in a similar arrangement for mechanical fixation of Toroidal choke.
  • the end faces of the insulating regions facing the toroidal core have nose-shaped projections for latching the toroidal core into the device.
  • a locking of the ring core between nose-shaped projections of an end face allows a secure, adhesive-free attachment of the device in the toroidal core.
  • a toroidal core choke comprising a toroidal core, a device for potential separation according to one of the above-mentioned embodiments and at least two electrically isolated from each other by the device for electrical isolation windings.
  • the central region of the potential separation device is stretched by compression of the compression zone and exerts an elastic force on the two insulating regions in the radial direction of the toroidal core.
  • FIG. 1 shows a front view of a toroidal core choke on the plane spanned by the toroidal core of the throttle.
  • the toroidal core choke 1 comprises a toroidal core 2 and two windings 3a and 3b which are electrically insulated from one another.
  • the windings 3a and 3b are, for example, choke coils in a power supply line to a single-phase power supply network with a phase conductor and a neutral conductor.
  • the toroidal core choke 1 further comprises a potential separation device 4.
  • the device 4 is fitted in the core hole 5 of the toroidal core 2.
  • FIG. 2 shows a perspective view of the toroidal core choke 1 according to FIG. 1
  • the exemplary embodiment is a toroidal core choke 1 for standing mounting on a printed circuit board.
  • the device 4 described below for potential separation is also suitable for use with other types of toroidal core chokes 1, in particular also for horizontal mounting.
  • FIGS. 3A and 3B show detailed front views of the device 4 for potential separation according to the first embodiment in the relaxed or compressed state.
  • the device 4 comprises in each case two insulating regions 6a and 6b at the upper or lower end of the web-shaped device 4.
  • the insulating regions 6a and 6b are connected to one another by a central region 7.
  • the central region 7 comprises in each case a holding part 8a and 8b which adjoin the insulating regions 6a and 6b, respectively, and a central compression zone 9 arranged between the holding parts 8a and 8b.
  • the compression zone 9 can be compressed in the radial direction of the toroidal core choke 1, So in the FIG. 3A in the vertical direction.
  • each of the webs 10a and 10b has a first portion 11a and 11b and a second portion 12a and 12b, respectively.
  • the webs 10a and 10b are made of an elastic material and can therefore be deformed under the action of force.
  • the entire device 4 is produced as a one-piece plastic injection-molded part. Prefers If the material used is a heat-resistant and flame-retardant plastic.
  • the webs 10a and 10b are configured point-symmetrical with respect to the center of the device 4 and the center of the core hole 5 in the built-in device 4 state.
  • Their sections 11a, 11b, 12a and 12b include in the illustrated projection a cavity and form in the in the FIG. 3A illustrated relaxed state a parallelogram.
  • the first portions 11a and 11b have a lower material thickness than the second material portions 12a and 12b.
  • the first portions 11a and 11b are easier to elastically deform with respect to the second portions 12a and 12b.
  • the central region 7 is compressed.
  • a compression of the central region 7 leads to a deformation of the webs 10a and 10b, as shown in the FIG. 3B is shown.
  • the first portions 11a and 11b of the webs 10a and 10b deform S-shaped.
  • the second portions 12a and 12b are displaced relative to each other in the direction of the radial axis. However, they remain largely dimensionally stable.
  • S-shaped deformable first portions 11 between the second portions 12 are arranged.
  • the in the FIG. 3B shown compression has the advantage that a radial compression of the insulating regions 6a and 6b leads to a parallel displacement of the longitudinal axes in the region of the holding parts 8a and 8b, so that a movement the insulating regions 6a and 6b takes place predominantly in the radial direction.
  • the central area 7 does not buckle laterally.
  • outwardly acting force allows a tight fit of the device 4 with only two insulating regions 6 in a ring core 2 of a toroidal core choke. 1
  • the insulating regions 6 protrude in a tangential direction beyond the holding parts 8 of the central region 7 and in this way produce a desired insulation distance between the adjacent windings 3a and 3b.
  • the insulating regions 6a and 6b in the illustrated embodiment each have a cavity 13a and 13b, respectively.
  • FIG. 4 shows a side view of the device 4 in the plane spanned by the axial and radial directions.
  • the holding parts 8 are configured on both sides with locking elements 14 in the embodiment.
  • the locking elements 14 allow a secure locking of the device 4 with a not shown in the figures, substantially U-shaped bracket for receiving the toroidal core choke 1 on a circuit board.
  • the locking elements 14 of the area A are in the lower part of FIG. 4 shown enlarged.
  • FIG. 5 shows a side view of a device 4 according to a second embodiment. Also the side view according to FIG. 5 shows the plane spanned by the axial and radial directions of a toroidal core 2.
  • the insulating regions 6a and 6b according to the second embodiment have at their end faces in each case two nose-shaped projections 15, which the device 4 in the inserted state with in the FIG. 5 interlock ring core 2, not shown.
  • the compression zone 9 exerts an elastic force on the end faces of the insulating regions 6, which leads to a locking of the ring core 2 in the recesses between the projections 15 and a separate attachment, such as a bonding of the device 4 with the toroidal core 2, dispensable ,
  • the shape and number of the insulating regions can be adapted to the requirements of toroidal core chokes with different windings.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coils Or Transformers For Communication (AREA)

Claims (10)

  1. Dispositif (4) d'isolation des potentiels destiné à être monté dans un trou de noyau (5) d'un noyau toroïdal (2), présentant une zone centrale (7) et deux zones isolées (6) faisant saillie hors de la zone centrale (7) dans le sens radial du trou de noyau (5) et mobiles dans le sens radial, dispositif avec lequel
    - la zone centrale (7) présente une zone de compression (9) comprenant au moins deux premières portions (11) parallèles l'une à l'autre de deux moulures (10),
    - les deux moulures (10) accouplent mécaniquement entre elles les deux zones isolées (6),
    - chacune des au moins deux premières portions (11) est déformable en forme de S par effet élastique et
    - les au moins deux premières portions (11) des deux moulures (10) sont disposées en parallèle l'une par rapport à l'autre lorsque la zone de compression (9) est détendue.
  2. Dispositif (4) selon la revendication 1,
    caractérisé en ce que
    chacune des deux moulures (10) présente en outre respectivement une deuxième portion (12), les au moins deux premières portions (11) et les deux deuxièmes portions (12) des deux moulures (10) formant les côtés d'un parallélogramme lorsque la zone de compression (9) est détendue.
  3. Dispositif (4) selon la revendication 2,
    caractérisé en ce que
    les au moins deux premières portions (11) présentent une épaisseur de matériau inférieure à celle des deux deuxièmes portions (12), de sorte que lors d'un mouvement des zones isolées (6) dans le sens radial, les au moins deux premières portions (11) sont déformées en forme de S et les deuxièmes portions (12) sont décalées sensiblement en parallèle l'une par rapport à l'autre.
  4. Dispositif (4) selon l'une des revendications 1 à 3, caractérisé en ce que le dispositif (4) est réalisé d'une seule pièce.
  5. Dispositif (4) selon l'une des revendications 1 à 4, caractérisé en ce que le dispositif (4) présente deux zones isolées (6) opposées par rapport à la zone centrale (7), de sorte que le dispositif (4) présente la silhouette d'une moulure compressible en longueur.
  6. Dispositif (4) selon l'une des revendications 1 à 5, caractérisé en ce que les zones isolées (6) font saillie dans le sens tangentiel du trou de noyau (5) au-dessus d'une partie de la zone centrale (7) reliée avec elles.
  7. Dispositif (4) selon l'une des revendications 1 à 6, caractérisé en ce que les zones isolées (6) présentent respectivement un espace creux (13).
  8. Dispositif (4) selon l'une des revendications 1 à 7, caractérisé par au moins une pièce de maintien (8) comprenant au moins un élément d'enclenchement (14) destiné à l'enclenchement du dispositif (4) avec un support servant à accueillir la bobine à noyau toroïdal (1).
  9. Dispositif (4) selon l'une des revendications 1 à 8, caractérisé en ce que les surfaces frontales des zones isolées (6) qui font face au noyau toroïdal (2) présentent des parties en saillie (15) en forme de tenons destinées à l'enclenchement du noyau toroïdal (2) dans le dispositif (4).
  10. Bobine à noyau toroïdal (1) présentant un noyau toroïdal (2), un dispositif (4) d'isolation des potentiels selon l'une des revendications 1 à 9 ainsi qu'au moins deux enroulements (3) isolés électriquement l'un par rapport à l'autre par le dispositif (4) d'isolation des potentiels, la zone centrale (7) du dispositif (4) d'isolation des potentiels étant tendue par une compression de la zone de compression (9) et exerçant une force élastique sur les deux zones isolées (6) dans la direction du noyau toroïdal (2).
EP10778665.9A 2009-11-19 2010-11-18 Dispositif de séparation de potentiel et bobine de choc à noyau toroïdal Active EP2502243B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009054001A DE102009054001A1 (de) 2009-11-19 2009-11-19 Vorrichtung zur Potentialtrennung und Ringkerndrossel
PCT/EP2010/067759 WO2011061258A2 (fr) 2009-11-19 2010-11-18 Dispositif de séparation de potentiel et bobine de choc à noyau toroïdal

Publications (2)

Publication Number Publication Date
EP2502243A2 EP2502243A2 (fr) 2012-09-26
EP2502243B1 true EP2502243B1 (fr) 2015-02-11

Family

ID=43923572

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10778665.9A Active EP2502243B1 (fr) 2009-11-19 2010-11-18 Dispositif de séparation de potentiel et bobine de choc à noyau toroïdal

Country Status (7)

Country Link
US (1) US8841985B2 (fr)
EP (1) EP2502243B1 (fr)
JP (1) JP5701309B2 (fr)
CN (1) CN102598166B (fr)
DE (1) DE102009054001A1 (fr)
HU (1) HUE025420T2 (fr)
WO (1) WO2011061258A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013000695U1 (de) 2013-01-24 2013-01-31 Würth Elektronik eiSos Gmbh & Co. KG Trennelement für eine Ringkerndrossel und Ringkern
CN105336476B (zh) * 2014-06-03 2018-01-30 中达电子(江苏)有限公司 开关电源、emi滤波器、共模电感器及其绕线方法
DE102016206171A1 (de) 2016-04-13 2017-10-19 Würth Elektronik eiSos Gmbh & Co. KG Trennelement für eine Ringkerndrossel und Ringkerndrossel
DE102016107818B4 (de) * 2016-04-27 2018-01-25 Sma Solar Technology Ag Drosselanordnung mit einem Einsatz
DE102017214857A1 (de) * 2017-08-24 2019-02-28 Vacuumschmelze Gmbh & Co. Kg Ringkernbaugruppe, stromkompensierte Drossel und Verfahren zur Herstellung einer Ringkernbaugruppe

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE3782987D1 (de) * 1986-08-01 1993-01-21 Siemens Ag Potentialtrennung fuer eine ringkerndrossel.
DE19932475C2 (de) * 1999-07-12 2002-04-25 Vacuumschmelze Gmbh Induktives Bauelement
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
DE10308010A1 (de) 2003-02-25 2004-09-09 Epcos Ag Isolierteil, Ringkern, Ringkerndrossel und Verfahren zur Herstellung der Ringkerndrossel
DE102004037853A1 (de) * 2004-08-04 2006-03-16 Epcos Ag Halterung für eine Drosselspule und ein induktives Bauelement mit der Halterung
DE102004048966A1 (de) 2004-10-07 2006-04-13 Epcos Ag Vorrichtung zur Potentialtrennung, Ringkerndrossel und Verfahren zur Herstellung der Ringkerndrossel
DE102005006344A1 (de) 2005-02-11 2006-08-17 Epcos Ag Isolierteil und Ringkerndrossel
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

Also Published As

Publication number Publication date
JP2013511832A (ja) 2013-04-04
WO2011061258A2 (fr) 2011-05-26
DE102009054001A1 (de) 2011-08-04
HUE025420T2 (en) 2016-04-28
WO2011061258A3 (fr) 2011-07-14
CN102598166A (zh) 2012-07-18
JP5701309B2 (ja) 2015-04-15
US8841985B2 (en) 2014-09-23
US20120274439A1 (en) 2012-11-01
CN102598166B (zh) 2015-04-22
EP2502243A2 (fr) 2012-09-26

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