EP1597739B1 - Element isolant, noyau toroidal, bobine de choc a noyau toroidal et procede de production d'une bobine de choc a noyau toroidal - Google Patents

Element isolant, noyau toroidal, bobine de choc a noyau toroidal et procede de production d'une bobine de choc a noyau toroidal Download PDF

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Publication number
EP1597739B1
EP1597739B1 EP04707487A EP04707487A EP1597739B1 EP 1597739 B1 EP1597739 B1 EP 1597739B1 EP 04707487 A EP04707487 A EP 04707487A EP 04707487 A EP04707487 A EP 04707487A EP 1597739 B1 EP1597739 B1 EP 1597739B1
Authority
EP
European Patent Office
Prior art keywords
toroidal core
insulating element
core
insulating part
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.)
Expired - Lifetime
Application number
EP04707487A
Other languages
German (de)
English (en)
Other versions
EP1597739A1 (fr
Inventor
Josef Feth
Jürgen STABENOW
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 EP1597739A1 publication Critical patent/EP1597739A1/fr
Application granted granted Critical
Publication of EP1597739B1 publication Critical patent/EP1597739B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • 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
    • H01F27/32—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
    • 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
    • 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
    • H01F41/06—Coil winding
    • H01F41/08—Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores

Definitions

  • the invention relates to an insulating part for installation in the interior of a toroidal core. Furthermore, the invention relates to a toroidal core with an insulating part. Moreover, the invention relates to a toroidal core choke. Moreover, the invention relates to a method for winding a toroidal core.
  • a plurality of mutually insulated windings are applied to toroidal cores along a circumference.
  • one or more potential separations are provided in the interior of the toroidal core.
  • the winding space located in the interior of the toroidal core is preferably subdivided into several equally sized winding spaces.
  • the sintered cores are sintered during manufacture with insulation, the sintered cores have relatively large deviations from one another with respect to their inner diameter. A potential separation should be able to compensate for these tolerances as much as possible.
  • EP 0 258 592 A is Isoliertil for installation in the Kernloch.eines a ring core with radially extending webs known.
  • the insulating part consists of a plastic with elastic properties.
  • An insulating part for installation in the core hole of a toroidal core which contains a number n ⁇ 2 radially outwardly extending webs.
  • at least one web on an elastically deformable spring element in the form of elastic tongues which are arranged at the outer end of the web.
  • the elastic tongues may be arranged, for example, for one or more webs in pairs at their outer ends and in each case deviate from the radial direction.
  • the insulating part has the advantage that it can be adapted to different core hole diameter of toroidal cores due to the preferably deformable by a radial force spring element.
  • the insulating part has the advantage that it can be easily and inexpensively, for example, produced by injection molding due to its simple structure.
  • insulating part adjacent webs may be interconnected by elastic support members.
  • These support elements can be used simultaneously for isolating the core hole into winding spaces. They form, for example, complementary to the lying between two webs portion of the ring core an inner boundary.
  • the webs are offset substantially by an angle of 360 ° / n against each other. This makes it easy and advantageous to divide the core hole in the same size changing room.
  • this has an n-fold symmetry axis.
  • a symmetry has the advantage that the production can be substantially simplified, since the smallest possible variety of shapes is observed.
  • the insulating part is integrally formed.
  • it can be produced, for example, advantageously by an injection molding technique.
  • this may be a thermoplastic, for.
  • polycarbonate As polycarbonate.
  • the material polycarbonate has the advantage that it is very well insulated on the one hand electrically and on the other hand has a very good fire behavior, namely a very low flammability according to the standard UL 94 V-0.
  • polycarbonate for example, the materials Lexan or Macrolon come into consideration.
  • a ring core which contains one of the insulating parts just described in its core hole.
  • Such a toroidal core has the advantage that it can be used very advantageously for producing a toroidal core choke.
  • Such a production method is given below:
  • a toroidal core in the core hole an insulating part is arranged.
  • the insulating part is formed so that it projects beyond the ring core in the axial direction.
  • the insulating part can protrude on the top and on the bottom of the toroidal core or even on one side. During the winding of the toroidal core this is held on the insulating part.
  • a toroidal choke which contains a toroid just described.
  • each lying between two webs portion of the toroidal core is wound with a winding.
  • toroidal core choke can be in a simple manner, a multiple throttle with a plurality of mutually insulated windings, which may also contain the same number of turns realize.
  • FIG. 1 shows an insulating part 1 in a plan view. It has webs 31, 32, 33, which are interconnected by carrier elements 421, 422, 423. The webs 31, 32, 33 extend in the radial direction away from an imaginary center of the insulating part. Through the imaginary center of the insulating part 1 runs the axis of symmetry 5 (see Figure 2).
  • the support elements 421, 422, 423 are designed very thin-walled and have a relatively large outer or inner radius of curvature R1, R2.
  • the inner radius of curvature R1 may be 16.5 mm and the outer radius of curvature R2 may be 16 mm. This results in a wall thickness of the support elements of 0.5 mm.
  • Such support members 421, 422, 423 are characterized by a high elasticity, which means that they can be deformed in the radial direction by pressing the rigid compared to the support members webs 31, 32, 33, and thus the adaptability of the insulating part to different core hole diameter demonstrate.
  • the webs 31, 32, 33 have a wall thickness W of 2 mm.
  • the support elements 421, 422, 423 have a wall thickness w of 0.5 mm.
  • tongues 411a, 411b; 412a, 412b and 413a, 413b are pairs of tongues 411a, 411b; 412a, 412b and 413a, 413b.
  • These tongues extend in a direction deviating from the radial direction and are designed in terms of their wall thickness so that they equal the wall thickness of the support elements 421, 422, 423.
  • the tongues 411a, 411b, 412a, 412b, 413a, 413b in this case fulfill the function of the spring elements 4.
  • the insulating part 1 has in its center a roughly triangular, straight through the entire height (see Figure 2) running cavity, whereby the insulating part 1 can be very easily produced by injection molding. Due to the support elements 421, 422, 423, each connecting two webs 31, 32, 33, the insulating part also has a high mechanical stability, which allows to insert the insulating part as a one-piece element before winding the ring core in the core hole ,
  • the present invention is not limited to three lands. Rather, it is contemplated to use instead of three and two or four or five or a larger integer number of webs to divide the core hole of the toroidal in the same size or simply in a variety of changing rooms.
  • the insulating member extends radially so far that it can be circumscribed by a circle with a diameter D of 32.4 mm.
  • the center of the circumscribing circle also forms the center of the insulating part, which is to be considered in each case with the term "radial".
  • the insulating part Due to the cooperating with the rigid webs spring elements 4, which are included in the insulating part of Figure 1, the insulating part can be very mechanically fixed in the core hole of a toroidal core, which has the advantage that the webs of the insulating member 1 does not push away during the winding to let.
  • a pressing surface 12 is still provided, by means of which the insulating part 1 can be pushed out of the injection mold.
  • Figure 2 shows a side view of the insulating part 1 of Figure 1, from which the height h of 24 mm emerges.
  • the axis of symmetry 5 is shown, which runs through the center of the insulating part 1, shown in Figure 1 as the center of the outer circle.
  • 1 bevels 13 may be provided on the sides at the top and on the underside of the insulating part can, in which the outer edges are inclined relative to the axis of symmetry 5 by an angle ⁇ .
  • the angle ⁇ can be for example 45 °.
  • the chamfers 13 facilitate the insertion of the insulating part in the core hole of a toroidal core, since thus an automatic self-centering is achieved.
  • FIG. 3 shows a toroidal core choke in a side view. It is shown a toroidal core 2, on which a winding 8 is applied.
  • an insulating part 1 is inserted according to FIG.
  • the height h of the insulating part 1, and the height hR of the toroidal core and the height hW of the winding 8 are chosen so that on both sides, ie on the upper and on the lower side of the toroidal core 2, a projection 7 of the insulating 1 results.
  • This projection 7 may be present on one or both sides of the ring core. It is used to hold the toroidal core 2 during the winding of the windings 8.
  • FIG. 4 shows a plan view of the toroidal core choke from FIG. 3. It can be seen that the core hole 6 is divided by the insulating part 1 into three equally large winding spaces 111, 112, 113. Each lying between two webs portion 91, 92, 93 of the toroidal core 2 is wound with a wire 10, whereby three mutually well insulated windings 8 have arisen.

Landscapes

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

Claims (10)

  1. Pièce isolante à introduire dans le trou d'un noyau (2) toroïdal,
    comportant un nombre n ≥ 2 de barrettes (31, 32, 33) s'étendant radialement vers l'extérieur, au moins une barrette (31, 32, 33) ayant un élément (4) de ressort déformable élastiquement,
    caractérisée en ce que
    des languettes (411a, 411b, 412a, 412b, 413a, 413b) élastiques sont disposées à l'extrémité d'une barrette (31, 32, 33).
  2. Pièce isolante suivant la revendication 1,
    dans laquelle deux barrettes (31, 32, 33) voisines sont reliées par des éléments (421, 422, 423) supports élastiques.
  3. Pièce isolante suivant l'une des revendications 1 à 2,
    dans laquelle les barrettes (31, 32, 33) sont décalées mutuellement sensiblement d'un angle (α) de 360°/n.
  4. Pièce isolante suivant l'une des revendications 1 à 3,
    qui a un axe (5) de symétrie d'ordre n.
  5. Pièce isolante suivant l'une des revendications 1 à 4,
    caractérisée en ce qu'elle est d'un seul tenant.
  6. Pièce isolante suivant l'une des revendications 1 à 5,
    caractérisée en ce que c'est une pièce moulée par injection.
  7. Pièce isolante suivant l'une des revendications 1 à 6,
    caractérisée en ce qu'elle contient une matière plastique thermodurcissable.
  8. Noyau toroïdal contenant une pièce (1) isolante suivant l'une des revendications 1 à 7 dans son trou (6).
  9. Procédé de bobinage d'un noyau (2) toroïdal,
    - dans lequel on utilise un noyau (2) toroïdal suivant la revendication 8, dans lequel la pièce (1) isolante dépasse dans la direction axiale ;
    - et dans lequel on maintient le noyau (2) toroïdal sur la pièce (1) isolante pendant le bobinage.
  10. Bobine à noyau toroïdal
    comportant un noyau (2) toroïdal suivant la revendication 8 dans lequel chaque partie (91, 92, 93) du noyau (2) toroïdal, se trouvant entre deux barrettes (31, 32, 33), est bobinée par un enroulement (8).
EP04707487A 2003-02-25 2004-02-03 Element isolant, noyau toroidal, bobine de choc a noyau toroidal et procede de production d'une bobine de choc a noyau toroidal Expired - Lifetime EP1597739B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10308010 2003-02-25
DE10308010A DE10308010A1 (de) 2003-02-25 2003-02-25 Isolierteil, Ringkern, Ringkerndrossel und Verfahren zur Herstellung der Ringkerndrossel
PCT/DE2004/000171 WO2004077459A1 (fr) 2003-02-25 2004-02-03 Element isolant, noyau toroidal, bobine de choc a noyau toroidal et procede de production d'une bobine de choc a noyau toroidal

Publications (2)

Publication Number Publication Date
EP1597739A1 EP1597739A1 (fr) 2005-11-23
EP1597739B1 true EP1597739B1 (fr) 2007-07-11

Family

ID=32841858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04707487A Expired - Lifetime EP1597739B1 (fr) 2003-02-25 2004-02-03 Element isolant, noyau toroidal, bobine de choc a noyau toroidal et procede de production d'une bobine de choc a noyau toroidal

Country Status (6)

Country Link
US (1) US7280027B2 (fr)
EP (1) EP1597739B1 (fr)
JP (1) JP4582656B2 (fr)
CN (1) CN1754232B (fr)
DE (2) DE10308010A1 (fr)
WO (1) WO2004077459A1 (fr)

Families Citing this family (22)

* 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
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
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
DE202006001269U1 (de) * 2006-01-26 2007-06-06 Vogt Electronic Components Gmbh Magnetkernvorrichtung mit Abstandhalter
CN101211688B (zh) * 2006-12-29 2011-04-06 台达电子工业股份有限公司 线圈及其组装方法
DE102007060556A1 (de) * 2007-12-13 2009-06-18 Endress + Hauser Wetzer Gmbh + Co Kg Übertragungseinheit
TWI394185B (zh) * 2009-07-01 2013-04-21 Delta Electronics Inc 磁性組件及其組裝方法
DE102009054001A1 (de) 2009-11-19 2011-08-04 Epcos Ag, 81669 Vorrichtung zur Potentialtrennung und Ringkerndrossel
JP2014204100A (ja) * 2013-04-10 2014-10-27 本田技研工業株式会社 チョークコイルおよび電子機器
JP6161206B2 (ja) * 2014-03-05 2017-07-12 コーセル株式会社 ノイズフィルタ
CN105336475B (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的方法
CN104376969A (zh) * 2014-12-12 2015-02-25 绵阳市容富电子科技有限公司 共模电感
CN104377008A (zh) * 2014-12-12 2015-02-25 绵阳市容富电子科技有限公司 Pfc共模电感
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
KR102010256B1 (ko) * 2016-05-24 2019-08-13 주식회사 아모그린텍 코일부품
DE102016209613A1 (de) 2016-06-01 2017-12-07 Würth Elektronik eiSos Gmbh & Co. KG Montagesatz für eine Drossel und Drossel
JP6814105B2 (ja) * 2017-06-30 2021-01-13 株式会社豊田自動織機 インダクタンス素子及びｌｃフィルタ
DE102019215802A1 (de) * 2019-10-15 2021-04-15 SUMIDA Components & Modules GmbH Formadaptive Halterung für eine Kernausführung und damit hergestelltes induktives Bauelement

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Also Published As

Publication number Publication date
DE10308010A1 (de) 2004-09-09
CN1754232B (zh) 2011-12-14
WO2004077459A1 (fr) 2004-09-10
US20060192649A1 (en) 2006-08-31
CN1754232A (zh) 2006-03-29
JP2006518933A (ja) 2006-08-17
US7280027B2 (en) 2007-10-09
DE502004004289D1 (de) 2007-08-23
JP4582656B2 (ja) 2010-11-17
EP1597739A1 (fr) 2005-11-23

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