EP0356498B1 - Procede pour fabriquer un element en fer muni d'un enroulement permettant de produire des champs electromagnetiques - Google Patents

Procede pour fabriquer un element en fer muni d'un enroulement permettant de produire des champs electromagnetiques Download PDF

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Publication number
EP0356498B1
EP0356498B1 EP89902635A EP89902635A EP0356498B1 EP 0356498 B1 EP0356498 B1 EP 0356498B1 EP 89902635 A EP89902635 A EP 89902635A EP 89902635 A EP89902635 A EP 89902635A EP 0356498 B1 EP0356498 B1 EP 0356498B1
Authority
EP
European Patent Office
Prior art keywords
winding
core
iron
cross
yokes
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
EP89902635A
Other languages
German (de)
English (en)
Other versions
EP0356498A1 (fr
Inventor
Ernst Wiesner
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.)
Zumtobel AG
Original Assignee
Zumtobel AG
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Filing date
Publication date
Application filed by Zumtobel AG filed Critical Zumtobel AG
Publication of EP0356498A1 publication Critical patent/EP0356498A1/fr
Application granted granted Critical
Publication of EP0356498B1 publication Critical patent/EP0356498B1/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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49073—Electromagnet, transformer or inductor by assembling coil and core

Definitions

  • the invention relates to a method for producing an iron body with a winding for generating electromagnetic fields according to the preamble of claim 1.
  • Such an iron body describes ZB FR-A-1568360.
  • windings In electrical machine construction, it is known to produce windings from electrically insulated wires and to arrange them in grooves in iron bodies, or else to use the winding for operational purposes without such an iron body. Wires with an essentially circular cross-section are used to produce such windings. To produce the winding, either a device is used as a winding tool, and the winding produced in this way is then inserted into the iron body, or else the iron body is wound directly by directly inserting the wire into its slots.
  • the fill factor of such windings or slots is of the order of magnitude of approx. 65%, i.e.
  • the rest (35%) is essentially air that is trapped in the gusset areas, that of each other adjacent wires can be limited.
  • DE-OS 17 89 162 describes an electrical coil with high density and good thermal conductivity, in which the winding is placed in a press mold and then pressed so strongly over its entire surface or at least over a portion of its length that it is pressed deform the individual wires of the winding.
  • this publication leaves open the question of how this winding or coil should subsequently be inserted into the iron body. It is only mentioned, as it were, in the margin that such coils are provided for motors with pronounced poles, the pole pieces of which can be dismantled in order to use the winding. It is probably difficult, if not impossible, to use such pressed coils in electrical machines with iron bodies that do not have pronounced poles that can be dismantled.
  • the invention now proceeds from this prior art, but advantageously here the corresponding electrical device (iron core with coil) as such or its parts are used directly to achieve the desired high winding density by pressing the winding.
  • the invention solves this problem with those features and measures which are the content and subject of the characterizing part of patent claim 1. Thanks to this proposal, it is possible to increase the filling factor of the winding space or the winding number to 90% and even more. Since, according to the invention, the turns of the coil are pressed and deformed by those parts which are directly parts of the electrical device to be manufactured, it is ensured that the heat loss occurring in the turn during the operational use of the device is optimally dissipated on all sides. In addition, especially when using baked enamel-insulated wires, the winding is sealed off from the atmosphere, so that it is not necessary to additionally soak the winding against such influences.
  • a further feature of the method provides that the winding is heated to approximately 150-300 ° C. before or during the external pressure action for the deformation of the wire cross sections.
  • FIG. 1 shows a cross section through an iron body with a groove in which a winding according to the invention lies; 2-5 schematically illustrate the steps in the process for producing such a winding for a choke coil with a circumferentially closed iron core.
  • a groove 2 of essentially rectangular cross section is arranged in the iron body 1 of an electrical device which is not described and explained here.
  • This groove 2 is expediently lined with an insulating film 4 and in this groove prepared in this way there are now the wires 5 of a winding 3, through which direct or alternating current flows when the electrical device is being used.
  • 1 shows - this is the cross section through such an iron body - the cross sections of the wires forming the winding 3 are formed at least in the area of the slots 2 as more or less regular hexagons, the individual ones being adjacent to one another The flat sides of the wires lie against one another so that these wires or their cross sections form a honeycomb-like pattern.
  • wires with such cross sections are not a problem in itself. However, it is more difficult to arrange wires with such regular hexagonal cross-sections in a groove 2 of an iron body 1 and insert them here in such a way that the desired high fill factor is actually achieved.
  • a choke coil with a closed iron core is used to show those process steps that allow this goal to be achieved, although a copper wire with an essentially circular cross section is used as the starting material for the production of the winding.
  • a so-called baked enamel wire is used.
  • Such baked enamel insulated wires are offered by relevant wire producers for electrical engineering in the trade (baked enamel symposium - innovation and technology in electric motor construction - Berlin - October 1979).
  • a wire spool 3 is wound from the baked enamel wire with a round wire cross section and with the aid of a suitable winding tool, which is shown in cross section in FIG. 2.
  • the longitudinal extent of this wire coil (perpendicular to the plane of the drawing) is greater than its transverse extent (in the plane of the drawing, as shown).
  • the choke coil which is described here and given as an example, has a parallelepiped-shaped iron core 6 and two U-shaped, substantially congruent yokes, which form the outer, circumferentially closed jacket. Choke coils with such a core cross section are known. In the wound coil of FIG.
  • an insulating film 8 is first inserted and then the above-mentioned cuboid iron core 6 is inserted (FIG. 3), the individual components combined here are dimensioned such that this joining of the parts is possible without further difficulty .
  • the iron core can consist of laminated sheets or it can e.g. B. also be a ferrite component or a pressed part.
  • the two U-shaped yokes 7 are then attached to diametrically opposed locations on the iron core 6 and subsequently in the direction of Arrows 9 pressed against each other.
  • the cross section of the winding space of the finished choke coil (Fig. 5) is dimensioned smaller than the cross section of the initially undeformed winding 3 (Fig. 2 or 3), so that by pressing against each other (arrows 9 in Fig. 4) of the components 6 and 7 the winding or the wires of the winding are pressed against one another, which then deform in the manner described above, so that the winding space of the choke reaches a filling factor of 90% or even more (FIG. 5).
  • baked enamel insulated wires are used to manufacture such windings.
  • baked enamel wires have been on the market for a long time and that symposia have already been held on the use of such baked enamel insulated wires in electric motor construction (Berlin - October 1979)
  • the invention relates in particular to windings with wires which have a small cross section, for example in the range of approximately 1 mm 2 or less.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Soft Magnetic Materials (AREA)
  • Windings For Motors And Generators (AREA)
  • Magnetic Treatment Devices (AREA)
  • Telephone Function (AREA)
  • Hard Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Claims (3)

  1. Procédé de fabrication d'un corps de fer pourvu d'un bobinage (3) pour la production de champs électromagnétiques pour transformateurs, bobines de selfs ou relais, dans lequel le corps de fer comporte un noyau de fer (6) de forme sensiblement parallélépipédique et des carcasses de fer (7) en forme de U agencées par paires et recevant une section du bobinage (13), entre les branches desquelles le noyau de fer (6) est intercalé, le bobinage (3) est préparé à partir d'un grand nombre d'enroulements juxtaposés constitués d'un fil métallique isolé au plan électrique de section transversale sensiblement ronde et l'on soumet ensuite le bobinage (3) ainsi préparé ou des sections de celui-ci, transversalement à la direction longitudinale des fils formant le bobinage (3), à une force assez grande pour que ces fils se déforment de manière plastique et que la section transversale à travers une telle section de bobinage se présente sous la forme d'un système en nid d'abeilles, caractérisé en ce que le noyau de fer (6) est inséré dans le bobinage (3) dont les fils sont préalablement non déformés et ensuite les carcasses de fer en forme de U (7) sont glissées en place et connectées au noyau (6), puis le noyau (6) et les carcasses (7) sont pressés l'un vers l'autre assez largement pour que la surface en coupe transversale de la rainure délimitée par le noyau (6) et les carcasses (7) ou de l'espace de bobinage soit plus petite que la surface en coupe transversale de la section du bobinage (3) préalablement non déformée reçue par la rainure ou l'espace de bobinage du corps de fer formé par le noyau (6) et les carcasses (7), le noyau (6) et les carcasses (7) étant alors pressés l'un contre l'autre avec une force (9) assez grande pour que les sections transversales initialement rondes des fils formant le bobinage (3) se déforment de manière permanente en nid d'abeilles sur la longueur de la rainure ou de l'espace de bobinage qui les reçoit.
  2. Procédé selon la revendication 1, caractérisé en ce qu'on utilise pour la fabrication du bobinage (3) un fil doté d'un revêtement de vernis cuit au four.
  3. Procédé selon la revendication 1, caractérisé en ce que le bobinage (3) est chauffé, avant ou pendant l'application de la pression, à environ 150 - 300°C.
EP89902635A 1988-01-27 1989-01-23 Procede pour fabriquer un element en fer muni d'un enroulement permettant de produire des champs electromagnetiques Expired - Lifetime EP0356498B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT165/88A AT392708B (de) 1988-01-27 1988-01-27 Verfahren zur herstellung eines eisenkoerpers mit einer wicklung
AT165/88 1988-01-27

Publications (2)

Publication Number Publication Date
EP0356498A1 EP0356498A1 (fr) 1990-03-07
EP0356498B1 true EP0356498B1 (fr) 1993-05-19

Family

ID=3483294

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89902635A Expired - Lifetime EP0356498B1 (fr) 1988-01-27 1989-01-23 Procede pour fabriquer un element en fer muni d'un enroulement permettant de produire des champs electromagnetiques

Country Status (9)

Country Link
US (1) US4998339A (fr)
EP (1) EP0356498B1 (fr)
AT (2) AT392708B (fr)
AU (1) AU609592B2 (fr)
DE (1) DE58904406D1 (fr)
ES (1) ES2010102A6 (fr)
FI (1) FI101110B (fr)
WO (1) WO1989007325A1 (fr)
ZA (1) ZA89661B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013010234A1 (de) 2013-06-18 2014-12-18 Volkswagen Aktiengesellschaft Wickeldraht zur Herstellung einer Wicklung sowie ein hierzu bestimmtes Verfahren und ein Wicklungsträger

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5195941A (en) * 1991-01-07 1993-03-23 American Medical Electronics, Inc. Contoured triangular transducer system for PEMF therapy
US6105236A (en) * 1998-02-05 2000-08-22 Raytheon Company Magnetic structure for minimizing AC resistance in planar rectangular conductors
DE102004049549A1 (de) * 2004-03-24 2005-10-13 Diehl Ako Stiftung & Co. Kg Motor als Direktantrieb und Verfahren zur Montage des Motors
US20090127938A1 (en) * 2004-10-28 2009-05-21 Koninklijke Philips Electronics, N.V. Linear motor coil assembly and linear motor
DE102006038588A1 (de) * 2006-08-17 2008-02-21 Siemens Ag Verfahren zur Herstellung einer Statorwicklung mit hoher Fülldichte

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6500897A (fr) * 1964-02-03 1965-08-04
FR1560537A (fr) * 1968-01-15 1969-03-21
FR1568360A (fr) * 1968-04-03 1969-05-23
FR2448803A1 (fr) * 1979-02-08 1980-09-05 Ducellier & Cie Procede d'obtention d'un enroulement inducteur, notamment de demarreur de vehicule automobile
JPS56161631A (en) * 1980-05-16 1981-12-12 Hitachi Ltd Manufacture of electromagnetic coil
JPS5893313A (ja) * 1981-11-30 1983-06-03 Meiji Natl Ind Co Ltd 誘導電磁器の製造方法
JPS59122331A (ja) * 1982-12-27 1984-07-14 Hitachi Ltd 回転電機の電機子及びその製造方法
JPS60242609A (ja) * 1985-05-10 1985-12-02 Matsushita Electric Ind Co Ltd 変圧器の製造方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013010234A1 (de) 2013-06-18 2014-12-18 Volkswagen Aktiengesellschaft Wickeldraht zur Herstellung einer Wicklung sowie ein hierzu bestimmtes Verfahren und ein Wicklungsträger

Also Published As

Publication number Publication date
FI894553A7 (fi) 1989-09-26
DE58904406D1 (de) 1993-06-24
ZA89661B (en) 1991-07-31
WO1989007325A1 (fr) 1989-08-10
ATA16588A (de) 1990-10-15
AU609592B2 (en) 1991-05-02
US4998339A (en) 1991-03-12
AT392708B (de) 1991-05-27
FI894553A0 (fi) 1989-09-26
AU3184189A (en) 1989-08-25
FI101110B (fi) 1998-04-15
ES2010102A6 (es) 1989-10-16
EP0356498A1 (fr) 1990-03-07
ATE89684T1 (de) 1993-06-15

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