EP0108921B1 - Tore enroulé avec entrefer et procédé de fabrication d'un tel tore - Google Patents

Tore enroulé avec entrefer et procédé de fabrication d'un tel tore Download PDF

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Publication number
EP0108921B1
EP0108921B1 EP83110031A EP83110031A EP0108921B1 EP 0108921 B1 EP0108921 B1 EP 0108921B1 EP 83110031 A EP83110031 A EP 83110031A EP 83110031 A EP83110031 A EP 83110031A EP 0108921 B1 EP0108921 B1 EP 0108921B1
Authority
EP
European Patent Office
Prior art keywords
air gap
core
strip
wound
toroidal
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
Application number
EP83110031A
Other languages
German (de)
English (en)
Other versions
EP0108921A1 (fr
Inventor
Rolf Grüner
Arnold Schäfer
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.)
Vacuumschmelze GmbH and Co KG
Original Assignee
Vacuumschmelze GmbH and Co KG
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 Vacuumschmelze GmbH and Co KG filed Critical Vacuumschmelze GmbH and Co KG
Publication of EP0108921A1 publication Critical patent/EP0108921A1/fr
Application granted granted Critical
Publication of EP0108921B1 publication Critical patent/EP0108921B1/fr
Expired 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
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F3/14—Constrictions; Gaps, e.g. air-gaps
    • 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
    • H01F27/24—Magnetic cores
    • H01F27/25—Magnetic cores made from strips or ribbons
    • 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
    • H01F27/24—Magnetic cores
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/266—Fastening or mounting the core on casing or support
    • 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
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)

Definitions

  • the invention relates to a ring band core made of ferromagnetic material with at least one air gap and an annular support body supporting the band layers.
  • the invention further relates to a method for producing such a ring band core.
  • Suitable spacers can also be inserted into the air gap in order to distance the air gap.
  • the winding of the wire should surely be prevented from slipping in the area of the air gap.
  • annular support body consists of non-magnetic material and has a depression in the area of the air gap.
  • An expedient method for producing a toroidal core according to the invention can be carried out in such a way that a depression is pressed into the support body made of non-magnetic material at at least one point on its circumference in such a way that there is a depression in the area between the support body and the tape layers wound thereon Intermediate space forms and then the wound tape layers in the area of this recess are severed into the intermediate space.
  • the ring band core according to the invention has the advantage that the embossed recess in the ring-shaped supporting body supporting the band layers considerably increases the manufacturing reliability for producing an air gap and the air gap has a largely unchangeable width. It is also achieved by the lateral shoulders of the recess that when the toroidal core is wound with electrically conductive wires, the windings in the intended sectors remain fixed on both sides of the air gap and no wire windings can get into the immediate area of the air gap.
  • a relatively thin-walled support ring made of a non-magnetic stainless steel alloy is provided as the supporting body, which has a groove-shaped depression in the area of the air gap. This is preferably wider than the air gap, so that there is also sufficient security in series production that only the magnetically effective band layers but not the support ring itself are severed in the production of the air gap.
  • support rings made of other non-magnetic materials such as. As plastic or ceramic can be used.
  • a support ring made of plastic would also have the advantage that it could be made in the required shape. An additional deformation step to produce the depression could be omitted.
  • the toroidal core After relaxation annealing at approx. 1,050 ° C, the toroidal core is given an all-round plastic coating made of epoxy resin. Thereafter, an air gap 3 approximately 1 mm wide is milled into the band layers 2 of the core with a tolerance of approximately ⁇ 0.03 mm.
  • the z. B. can consist of two parallel windings of copper wire, each with the same number of turns.
  • a choke coil wound in this way is suitable as part of a deflection system for ink-jet recorders, since it is essential that the air gap width of the toroidal core has a narrow tolerance and the air gap for receiving a movable permanent magnet is free from annoying wire windings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Claims (5)

1. Noyau à ruban toroïdal en matériau ferromagnétique comportant au moins un entrefer (3) et un élément de support annulaire (1) supportant les couches de ruban (2), caractérisé en ce que l'élément de support (1) est constitué de matériau non magnétique et présente, au niveau de l'entrefer (3), un creux (4).
2. Noyau à ruban toroïdal selon la revendication 1, caractérisé en ce qu'en tant qu'élément de support (1) est prévu un anneau porteur en un alliage d'acier inoxydable qui présente un creux en forme de gouttière (4).
3. Noyau à ruban toroïdal selon la revendication 2, caractérisé en ce que le creux (4) dans l'anneau porteur est plus large que l'entrefer (3).
4. Procédé pour la fabrication d'un noyau à ruban toroïdal à entrefer (3), dans lequel un ruban en matériau ferromagnétique est enroulé sur un élément de support annulaire (1) supportant les couches de ruban (2) et les couches de ruban (2) enroulées sont écartées au moins en un point de la circonférence pour l'obtention de l'entrefer (3), caractérisé en ce que, dans l'élément de support (1) constitué de matériau non magnétique, est pratiqué en au moins un point de sa circonférence un creux (4) de manière que se forme au niveau du creux (4) entre l'élément de support (1) et les couches de ruban (2) enroulées sur celui-ci un espace intermédiaire et les couches de ruban (2) enroulées étant ensuite écartées au niveau de ce creux (4) jusqu'à l'intérieur de l'espace intermédiaire.
5. Procédé selon la revendication 4, caractérisé en ce que le noyau à ruban toroïdal est revêtu de tous côtés avant l'écartement des couches de ruban (2) avec une couche électriquement isolante (5).
EP83110031A 1982-10-16 1983-10-07 Tore enroulé avec entrefer et procédé de fabrication d'un tel tore Expired EP0108921B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823238439 DE3238439A1 (de) 1982-10-16 1982-10-16 Ringbandkern mit luftspalt und verfahren zur herstellung eines derartigen ringbandkerns
DE3238439 1982-10-16

Publications (2)

Publication Number Publication Date
EP0108921A1 EP0108921A1 (fr) 1984-05-23
EP0108921B1 true EP0108921B1 (fr) 1986-07-30

Family

ID=6175917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83110031A Expired EP0108921B1 (fr) 1982-10-16 1983-10-07 Tore enroulé avec entrefer et procédé de fabrication d'un tel tore

Country Status (2)

Country Link
EP (1) EP0108921B1 (fr)
DE (2) DE3238439A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6313306A (ja) * 1986-07-04 1988-01-20 Hitachi Ltd 電磁石鉄心，及びその製作方法
NL8602302A (nl) * 1986-09-12 1988-04-05 Philips Nv Inductieve inrichting met een kern van amorf materiaal.
NL9001350A (nl) * 1990-06-14 1992-01-02 Philips Nv Transformator met luchtspleet en isolatiefolie-pakket.
FI113416B (fi) * 2000-10-27 2004-04-15 Trafomic Oy Sydänrakenne
US6774758B2 (en) 2002-09-11 2004-08-10 Kalyan P. Gokhale Low harmonic rectifier circuit
WO2017174099A1 (fr) * 2016-04-08 2017-10-12 Thomas Theil Ensemble fil wiegand et procédé de fabrication dudit fil
CN106373737B (zh) * 2016-10-14 2018-03-09 嵊州市仲明新材料科技有限公司 一种方便使用的铁芯

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE497139C (de) * 1924-09-13 1930-05-05 Internat Western Electric Comp Verfahren zur Herstellung eines aus voneinander isolierten Einzelteilen geringer Dicke einer hochpermeablen Eisen-Nickel-Legierung zusammengesetzten magnetischen Zweckendienenden Koerpers
FR50293E (fr) * 1939-03-21 1940-01-29 Thomson Houston Comp Francaise Perfectionnements aux machines et dispositifs électromagnétiques et à leurs procédés de fabrication
DE749247C (de) * 1939-06-21 1944-11-20 Aus bandfoermigem Material hergestellter Wickelkern fuer magnetische Zwecke, insbesondere fuer auf Kabel aufsetzbare Drosselspulen, mit einem den Kern auftrennenden Luftspalt
GB539093A (en) * 1939-06-21 1941-08-27 British Thomson Houston Co Ltd Improvements in and relating to cores for electrical apparatus and method of making the same
US2290680A (en) * 1940-03-13 1942-07-21 Western Electric Co Electromagnetic coil
GB673267A (en) * 1950-05-17 1952-06-04 Standard Telephones Cables Ltd Magnetic cores for electric induction apparatus
GB731500A (en) * 1952-07-25 1955-06-08 British Thomson Houston Co Ltd Improvements in and relating to magnetic cores
DE1085270B (de) * 1952-09-19 1960-07-14 Raupach Friedrich Verfahren zum Herstellen eines spiral aufgebauten Ringkernes fuer elektrische Apparate und Geraete, vorzugsweise fuer Transformatoren, Messwandler und Drosselspulen
DE1109268B (de) * 1955-10-10 1961-06-22 United Transformer Corp Klein- und Kleinstspule auf einem zylindrischen Spulenkoerper aus magnetisierbarem Blech
DE2141118A1 (de) * 1971-08-17 1973-03-01 Walz Alfred Herstellungsverfahren fuer magnetische kreise mit schnittbandkernen
DE2349238C2 (de) * 1973-10-01 1982-06-09 Siemens AG, 1000 Berlin und 8000 München Verfahren zum Herstellen von Drosselspulen

Also Published As

Publication number Publication date
DE3238439A1 (de) 1984-04-19
DE3364985D1 (en) 1986-09-04
EP0108921A1 (fr) 1984-05-23

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