EP0469609A1 - Winding, especially for radiofrequency transformers - Google Patents

Winding, especially for radiofrequency transformers Download PDF

Info

Publication number
EP0469609A1
EP0469609A1 EP91112956A EP91112956A EP0469609A1 EP 0469609 A1 EP0469609 A1 EP 0469609A1 EP 91112956 A EP91112956 A EP 91112956A EP 91112956 A EP91112956 A EP 91112956A EP 0469609 A1 EP0469609 A1 EP 0469609A1
Authority
EP
European Patent Office
Prior art keywords
winding
strip
folded
layers
shaped
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.)
Withdrawn
Application number
EP91112956A
Other languages
German (de)
French (fr)
Inventor
Hartmut Dipl.-Ing. Franz
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.)
Bodenseewerk Geratetechnik GmbH
Original Assignee
Bodenseewerk Geratetechnik GmbH
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 Bodenseewerk Geratetechnik GmbH filed Critical Bodenseewerk Geratetechnik GmbH
Publication of EP0469609A1 publication Critical patent/EP0469609A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00Coils

Definitions

  • the invention relates to a winding, in particular a winding for high-frequency transmitters, which consists of flat conductor layers lying one above the other with the interposition of insulating layers, which form a flexible strip with the insulating layers, of which individual sections are folded over to form the turns of the winding.
  • a winding for high-frequency transmitters is made from a wire of circular cross-section, the skin effect is very noticeable.
  • the skin effect causes the current to be displaced towards the surface of the conductor at high frequencies. This significantly reduces the cross-section of the wire that is used.
  • a coil wound from wire requires a bobbin.
  • DE-A-3 148 192 relates to an electrical coil which is constructed from conductor tracks.
  • the coil turns are applied as spiral conductor sections next to each other as a printed circuit on a ribbon-shaped insulating material film.
  • folding the insulating film it is achieved that the inner end of the conductor tracks, which has a contact surface, is to be contacted with a contact surface at the beginning of the adjacent coil section.
  • This coil requires the production of printed conductors using printed circuit technology.
  • the coil consists of separate sections that must be electrically connected to one another via contact surfaces.
  • the conductor tracks are not designed in such a way that the influence of the skin effect is reduced for a given cross section.
  • US-A-2 943 966 shows a film with essentially U-shaped, interconnected conductor sections applied as a printed circuit.
  • the film is covered by an insulating layer.
  • the film is folded in a zigzag shape so that the conductor sections form a coil with a plurality of turns.
  • From US-A-2 943 966 it is also known to place two such films on top of one another with the interposition of an insulating layer and to fold them together in a zigzag shape in order to obtain a transformer. In the case of zigzag folding, such conductor sections each lie on adjoining surface parts which add up to a full turn.
  • the conductor sections are produced as printed circuits.
  • DE-A-2 260 496 describes electrical transformers or chokes in which flat insulating material carriers are provided on both sides with electrical conductor tracks. With a fixed direction of rotation, the conductor tracks have a tendency to spiral upwards from the outer edge inwards on one surface and a spiraling tendency from the inside to the outer edge on the other surface. The two sides are connected so that the direction of rotation is the same on both sides.
  • DE-A-906 831 describes a coil in which sections with spiral conductor tracks are provided on both sides on a flexible strip of insulating material.
  • the conductor tracks of each section are connected to one another through the strip.
  • the conductor tracks of the individual sections are connected in series, so that a coherent line is formed.
  • the sections are covered by insulating varnish or the like and folded in a zigzag shape so that a coil is formed.
  • US-A-4 581 598 shows a toric air core transformer with radially outwardly extending substrates.
  • Each substrate has windings extending from one end to the other, each winding having a solder lug for connection to a corresponding solder lug of the adjacent substrate.
  • the substrates are folded, flexible parts.
  • DE-A-2 632 039 shows a coil in the form of a flexible, printed circuit board.
  • DE-A 1 006 951 shows a broadband high-frequency transformation line with printed circuits which form inhomogeneous lines continuously or stepwise.
  • the invention is based on the object, the construction and manufacture of windings, in particular for high-frequency to simplify carriers with flat conductor layers.
  • the conductor layers are formed by a flat, meandering cut metal strip with adjoining u-shaped regions each having an arcuate central part between legs, which are covered on both sides by the insulating layers.
  • Embodiments of the invention are the subject of the dependent claims.
  • 10 denotes a strip from which a high-frequency winding, in particular a winding for high-frequency transmitters, is produced by folding.
  • the strip 10 contains a conductor track 12 and insulating layers 14 and 16 on both sides of the conductor track 12.
  • the conductor track 12 is designed as a flat, continuous, meandering metal strip 18.
  • the metal strip 18, a copper layer, consists of adjoining u-shaped regions 26, 28, 30, 32, etc., each having an arcuate central part 20 between legs 22 and 24.
  • the regions 26, 28, 30, 32, etc. are on both sides of the Insulating layers 14 and 16 covered.
  • the strip 10 between the adjoining legs 24 and 22 of successive U-shaped regions 26 and 28 or 38 and 30 or 30 and 32 etc. of the metal strip 18 is at 45 ° to the longitudinal axis of these legs 24 , 22 folded.
  • the fold lines are labeled 34 and 36 in FIG.
  • the upper one of the U-shaped areas 28, 30, 32 is always rotated in the same direction by 90 ° relative to the underlying U-shaped area 26, 28 and 30.
  • the insulation layers 14 and 16 are formed by strips 38, 40 with rectangular recesses 42, 44 arranged with a gap between them.
  • the recesses 42, 44 each lie between the u-shaped regions 28 and 32 or 26 and 30 of the metal strip 18 oriented in the same direction.
  • the inner corners 42 or 48 of the recesses 42 and 44 each lie on the folded edges 34 or 36
  • the strips 38 and 40 of the insulating layers 14 and 16 have aligned, circular openings 50 which are adapted to the inner edges of the U-shaped regions 26, 28, 30 and 32.
  • the region 28 is placed along the at 45 0 to the longitudinal axis of the legs 22 and 24 extending fold edge 34 over the range 26th
  • the area 26 forms a "U” with the legs 22A and 24A which is open at the top in FIG.
  • the area 28 forms a "U” open to the right in FIG. 1 with the legs 22B and 24B.
  • the two "U” are thus rotated 90 ° against each other.
  • the area 30 is again placed along the folded edge 36 over the area 28. Area 30 is only shown broken off in FIG. 2 for the sake of clarity.
  • the area 30 forms a "U” which is open at the bottom in FIG.
  • the "U” is thus rotated further 90 ° clockwise against the "U” of the area 28.
  • the areas 26, 28, 30, 32 etc. are thus “spirally” folded over one another.
  • the "U” arches include the openings 50 of strips 38 and 40. This results in a continuous, coiled conductor track around the openings 50 of the various sections that are aligned when folded.
  • a straight piece 52 of the metal strip 18 in the extension of the leg 22 of the area 26 forms a connection terminal.
  • a corresponding straight piece 54 in the extension of the leg 24 of the last u-shaped area 56 forms a further connection terminal (FIG. 3).
  • a meandering metal strip 58 similar to that of FIG. 1 is provided.
  • the metal strip 58 can be regarded as a strip which is provided along its edges 60 and 62 alternately from one or the other side with U-shaped cutouts 64 and 66, respectively. Sections of the same length are formed which are delimited in FIG. 5 by the dashed lines 68 and 70 and which alternately have a cutout 64 or 66 which is open upwards or downwards in FIG.
  • a strip 72, 74 of flexible insulating layers is applied to each of these meandering metal strips 58 on both sides.
  • the strips 72 and 74 here have straight edges and in the area of the cutouts 64 and 66 circular, aligned openings 76.
  • the openings 76 are adapted to the curvature of the arches of the cutouts 64, 66.
  • the strip 78 consisting of the metal strip 58 and the strips 72, 74 of insulating layers is folded in a zigzag fashion along the lines 68, 70.
  • the cutouts 64 and 66 fall over one another and, together with the openings 76, delimit a central passage 80 of circular cross section.
  • the folded metal strip 58 forms a helical conductor path, which represents a high-frequency winding. With the passage 80, this winding can be placed on a core of a transformer.
  • the metal strip can be punched out of thin, foldable copper sheet and glued to the flexible insulating layers.
  • the metal strip can also be formed using an etching technique.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

A radio-frequency winding, especially a winding for a radio-frequency transformer, consists of flat conductor layers (12) with insulating layers (14, 16), forming a flexible strip. Individual sections of the strip are folded one above the other to form the turns of the winding. The conductor layers (12) are formed from a flat cut, continuous, meandering metal strip (18) of the strip with mutually adjacent u-shaped regions (26, 28, 30, 32), each of which has a curved centre part (20) between limbs (22, 24) and is covered on both sides by the insulating layers (14, 16). In this case, the strip is folded between the mutually adjacent limbs (22, 24) of successive u-shaped regions (26, 28, 30, 32) of the metal strip (18) at 45 DEG to the longitudinal axis of these limbs (22, 24), such that the respectively upper one of the u-shaped regions (28, 30, 32) is always arranged rotated in the same sense of rotation through 90 DEG with respect to the u-shaped region (26, 28, 30) located beneath it. The insulation layers (14, 16) are formed by strips (38, 40) having rectangular recesses (42, 44) arranged on opposite sides with a gap with respect to one another. <IMAGE>

Description

Technisches GebietTechnical field

Die Erfindung betrifft eine Wicklung, insbesondere Wicklung für Hochfrequenzübertrager, die aus flachen unter Zwischenlage von Isolierschichten übereinanderliegenden Leiterschichten besteht, welche mit den Isolierschichten einen flexiblen Streifen bilden, von dem zur Bildung der Windungen der Wicklung einzelnen Abschnitte übereinandergefaltet sind.The invention relates to a winding, in particular a winding for high-frequency transmitters, which consists of flat conductor layers lying one above the other with the interposition of insulating layers, which form a flexible strip with the insulating layers, of which individual sections are folded over to form the turns of the winding.

Zugrundeliegender Stand der TechnikUnderlying state of the art

Wenn eine Wicklung für Hochfrequenzübertrager aus einem Draht von kreisförmigem Querschnitt hergestellt wird, dann macht sich der Skineffekt stark bemerkbar. Der Skineffekt bewirkt, daß der Strom bei hohen Frequenzen zur Oberfläche des Leiters hin verdrängt wird. Dadurch wird der ausgenutzte Querschnitt des Drahtes erheblich verringert. Außerdem erfordert eine aus Draht gewikkelte Spule einen Wickelkörper.If a winding for high-frequency transmitters is made from a wire of circular cross-section, the skin effect is very noticeable. The skin effect causes the current to be displaced towards the surface of the conductor at high frequencies. This significantly reduces the cross-section of the wire that is used. In addition, a coil wound from wire requires a bobbin.

Es ist bekannt, Wicklungen für Hochfrequenzübertrager aus flachen, unter Zwischenlage von Isolierschichten übereinanderliegenden Leiterschichten herzustellen. Die Ausbildung der Wicklung aus flachen Leiterschichten vermindert den Skineffekt, da keine oberflächenferne Querschnittsteile vorhanden sind. Bei bekannten Hochfrequenzübertragern dieser Art sind die Leiterschichten von Leiterbahnen gebildet nach Art gedruckter Schaltungen auf mehrschichtigen Leiterplatten angebracht sind. Die Herstellung solcher mehrschichtiger Leiterplatten ist sehr aufwendig. Die Leiterbahnen sind voneinander getrennte Wicklungsabschnitte, die durch geeignete Durchführungen zwischen den verschiedenen Lagen der mehrlagigen Leiterplatte miteinander verbunden werden müssen. Das ist aufwendig.It is known to produce windings for high-frequency transmitters from flat conductor layers lying one above the other with the interposition of insulating layers. The formation of the winding from flat conductor layers reduces the skin effect, since there are no cross-sectional parts remote from the surface. In known high-frequency transmitters of this type, the conductor layers are formed by conductor tracks in the manner of printed circuits and are attached to multilayer printed circuit boards. The production of such multilayer printed circuit boards is very complex. The conductor tracks are separate winding sections which have to be connected to one another by suitable bushings between the different layers of the multilayer printed circuit board. It is expensive.

Die DE-A-3 148 192 betrifft eine elektrische Spule, die aus Leiterbahnen aufgebaut ist. Die Spulenwindungen sind als spiralige Leiterabschnitte nebeneinander als gedruckte Schaltung auf einer bandförmigen Isolierstoffolie aufgebracht. Durch Faltung der Isolierstoffolie wird erreicht, daß von den Leiterbahnen das innere, eine Kontaktfläche aufweisende Ende mit einer Kontaktfläche am Anfang des benachbarten Spulenabschnitts zu kontaktieren ist.DE-A-3 148 192 relates to an electrical coil which is constructed from conductor tracks. The coil turns are applied as spiral conductor sections next to each other as a printed circuit on a ribbon-shaped insulating material film. By folding the insulating film, it is achieved that the inner end of the conductor tracks, which has a contact surface, is to be contacted with a contact surface at the beginning of the adjacent coil section.

Diese Spule erfordert die Herstellung von Leiterbahnen mit der Technik gedruckter Schaltungen. Die Spule besteht aus getrennten Abschnitten, die über Kontaktflächen miteinander elektrisch verbunden werden müssen. Die Leiterbahnen sind nicht in der Weise ausgebildet, daß bei einem vorgegebenen Querschnitt der Einfluß des Skineffekts reduziert wird.This coil requires the production of printed conductors using printed circuit technology. The coil consists of separate sections that must be electrically connected to one another via contact surfaces. The conductor tracks are not designed in such a way that the influence of the skin effect is reduced for a given cross section.

Die US-A-2 943 966 zeigt eine Folie mit als gedruckte Schaltung aufgebrachten, im wesentlichen u-förmigen, miteinander verbundenen Leiterabschnitten. Die Folie ist durch eine Isolierschicht abgedeckt. Die Folie wird zickzackförmig so gefaltet, daß die Leiterabschnitte eine Spule mit einer Mehrzahl von Windungen bildet. Durch die US-A-2 943 966 ist auch bekannt, zwei solche Folien unter zwischenlage einer Isolierschicht aufeinanderzulegen und gemeinsam zickzackförmig zu falten, um einen Transformator zu erhalten. Bei der Zickzackfaltung liegen jeweils solche Leiterabschnitte auf aneinander angrenzenden Flächenteilen, die sich zu einer vollen Windung ergänzen.US-A-2 943 966 shows a film with essentially U-shaped, interconnected conductor sections applied as a printed circuit. The film is covered by an insulating layer. The film is folded in a zigzag shape so that the conductor sections form a coil with a plurality of turns. From US-A-2 943 966 it is also known to place two such films on top of one another with the interposition of an insulating layer and to fold them together in a zigzag shape in order to obtain a transformer. In the case of zigzag folding, such conductor sections each lie on adjoining surface parts which add up to a full turn.

Eine ähnliche Anordnung zeigt die US-A-3 002 260.A similar arrangement is shown in US-A-3 002 260.

Auch hier sind die Leiterabschnitte als gedruckte Schaltungen hergestellt.Here too, the conductor sections are produced as printed circuits.

Die DE-A-2 260 496 beschreibt elektrische Transformatoren oder Drosseln, bei denen flächige Isolierstoffträger beidseitig mit elektrischen Leiterbahnen versehen ist. Die Leiterbahnen besitzen bei einer festgelegt gedachten Drehrichtung auf einer Fläche eine vom Außenrand nach innen und auf der anderen Fläche eine von innen zum Außenrand spiralförmig steigende Tendenz. Die beiden Seiten sind so verbunden, daß der Drehsinn auf beiden Seiten gleich ist.DE-A-2 260 496 describes electrical transformers or chokes in which flat insulating material carriers are provided on both sides with electrical conductor tracks. With a fixed direction of rotation, the conductor tracks have a tendency to spiral upwards from the outer edge inwards on one surface and a spiraling tendency from the inside to the outer edge on the other surface. The two sides are connected so that the direction of rotation is the same on both sides.

Die DE-A-906 831 beschreibt eine Spule, bei welcher auf einem flexiblen Streifen aus isolierendem Material auf beiden Seiten Abschnitte mit spiraligen Leiterbahnen vorgesehen sind. Die Leiterbahnen jedes Abschnitts sind durch den Streifen hindurch miteinander verbunden. Die Leiterbahnen der einzelnen Abschnitte sind hintereinandergeschaltet, so daß eine zusammenhängende Leitung gebildet ist. Die Abschnitte sind durch Isolierlack o. dergl. abgedeckt und zickzackförmig so gefaltet, daß eine Spule entsteht.DE-A-906 831 describes a coil in which sections with spiral conductor tracks are provided on both sides on a flexible strip of insulating material. The conductor tracks of each section are connected to one another through the strip. The conductor tracks of the individual sections are connected in series, so that a coherent line is formed. The sections are covered by insulating varnish or the like and folded in a zigzag shape so that a coil is formed.

Die US-A-4 581 598 zeigt einen torischen Luftkerntransformator mit radial auswärts sich erstrekkenden Substraten. Jedes Substrat weist Wicklungen auf, die sich von einem Ende zum anderen erstrecken, wobei jede Wicklung eine Lötöse zur Verbindung mit einer entsprechenden Lötöse des benachbarten Substrats aufweist. Die Substrate sind gefaltete, flexible Teile.US-A-4 581 598 shows a toric air core transformer with radially outwardly extending substrates. Each substrate has windings extending from one end to the other, each winding having a solder lug for connection to a corresponding solder lug of the adjacent substrate. The substrates are folded, flexible parts.

Die DE-A-2 632 039 zeigt eine Spule in Form einer flexiblen, gedruckten Leiterplatte. Die DE-A 1 006 951 zeigt eine breitbandige Hochfrequenz-Transformationsleitung mit gedruckten Schaltungen, die stetig oder stufenweise inhomogene Leitungen bilden.DE-A-2 632 039 shows a coil in the form of a flexible, printed circuit board. DE-A 1 006 951 shows a broadband high-frequency transformation line with printed circuits which form inhomogeneous lines continuously or stepwise.

Offenbarung der ErfindungDisclosure of the invention

Der Erfindung liegt demgegenüber die Aufgabe zugrunde, den Aufbau und die Herstellung von Wicklungen, insbesondere für Hochfrequenzübertrager mit flachen Leiterschichten zu vereinfachen.In contrast, the invention is based on the object, the construction and manufacture of windings, in particular for high-frequency to simplify carriers with flat conductor layers.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die Leiterschichten von einem flächigen, mäanderförmig zugeschnittenen Metallstreifen mit aneinander anschließenden u-förmigen, je einen bogenförmigen Mittelteil zwischen Schenkeln aufweisenden Bereichen gebildet sind, die beiderseits von den Isolierschichten abgedeckt ist.According to the invention, this object is achieved in that the conductor layers are formed by a flat, meandering cut metal strip with adjoining u-shaped regions each having an arcuate central part between legs, which are covered on both sides by the insulating layers.

Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Embodiments of the invention are the subject of the dependent claims.

Zwei Ausführungsbeispiele der Erfindung sind nachstehend unter Bezugnahme auf die zugehörigen Zeichnungen näher erläutert.Two embodiments of the invention are explained below with reference to the accompanying drawings.

Kurze Beschreibung der Zeichnungen

  • Fig.1 zeigt eine Draufsicht auf einen Teil eines zu der Wicklung zu faltenden Streifens.
  • Fig.2 zeigt die zu einer ersten Windung der Wicklung übereinandergefalteten ersten beiden Abschnitte des Streifens.
  • Fig.3 ist eine Seitenansicht der Wicklung.
  • Fig.4 zeigt schematisch einen Schnitt durch den Streifen mit dem Metallstreifen und den Isolierschichten.
  • Fig.5 zeigt eine andere Form des Streifens.
  • Fig.6 zeigt in Seitenansicht die Faltung des Streifens von Fig.5 zur Bildung der Wicklung.
Brief description of the drawings
  • 1 shows a plan view of a part of a strip to be folded into the winding.
  • FIG. 2 shows the first two sections of the strip folded over one another to form a first turn of the winding.
  • Figure 3 is a side view of the winding.
  • 4 shows schematically a section through the strip with the metal strip and the insulating layers.
  • Fig. 5 shows another form of the strip.
  • Figure 6 shows a side view of the folding of the strip of Figure 5 to form the winding.

Bevorzugte Ausführungen der ErfindungPreferred embodiments of the invention

In Fig.1 ist mit 10 ein Streifen bezeichnet, aus dem eine Hochfrequenzwicklung, insbesondere eine Wicklung für Hochfrequenzübertrager, durch Falten hergestellt wird. Der Streifen 10 enthält eine Leiterbahn 12 und zu beiden Seiten der Leiterbahn 12 Isolierschichten 14 und 16. Die Leiterbahn 12 ist, wie aus Fig.1 ersichtlich ist, als flächig zugeschnittener, durchgehender mäanderförmiger Metallstreifen 18 ausgebildet. Der Metallstreifen 18, eine Kupferschicht, besteht aus aneinander anschließenden u-förmigen, je einen bogenförmigen Mittelteil 20 zwischen Schenkeln 22 und 24 aufweisenden Bereichen 26, 28, 30, 32 usw. Die Bereiche 26, 28, 30, 32 usw sind beiderseits von den Isolierschichten 14 und 16 abgedeckt.In FIG. 1, 10 denotes a strip from which a high-frequency winding, in particular a winding for high-frequency transmitters, is produced by folding. The strip 10 contains a conductor track 12 and insulating layers 14 and 16 on both sides of the conductor track 12. As can be seen from FIG. 1, the conductor track 12 is designed as a flat, continuous, meandering metal strip 18. The metal strip 18, a copper layer, consists of adjoining u-shaped regions 26, 28, 30, 32, etc., each having an arcuate central part 20 between legs 22 and 24. The regions 26, 28, 30, 32, etc. are on both sides of the Insulating layers 14 and 16 covered.

Bei der Ausführung nach Fig.1 bis 4 ist der Streifen 10 zwischen den aneinander anschließenden Schenkeln 24 und 22 aufeinanderfolgender u-förmiger Bereiche 26 und 28 oder 38 und 30 uder 30 und 32 usw. des Metallstreifens 18 unter 45° zur Längsachse dieser Schenkel 24, 22 gefaltet. Die Faltlinien sind in Fig.1 mit 34 und 36 bezeichnet. Dabei ist der jeweils obere der u-förmigen Bereiche 28, 30,32 in stets gleichem Drehsinn um 90° gegen den darunterliegenden u-förmigen Bereich 26, 28 bzw. 30 verdreht angeordnet.1 to 4, the strip 10 between the adjoining legs 24 and 22 of successive U-shaped regions 26 and 28 or 38 and 30 or 30 and 32 etc. of the metal strip 18 is at 45 ° to the longitudinal axis of these legs 24 , 22 folded. The fold lines are labeled 34 and 36 in FIG. The upper one of the U-shaped areas 28, 30, 32 is always rotated in the same direction by 90 ° relative to the underlying U-shaped area 26, 28 and 30.

Die Isolationsschichten 14 und 16 sind von Streifen 38, 40 mit auf Lücke zueinander angeordneten rechteckigen Ausnehmungen 42, 44 gebildet. Dabei liegen die Ausnehmungen 42, 44 jeweils zwischen den in gleicher Richtung orientierten u-förmigen Bereichen 28 und 32 bzw. 26 und 30 des Metallstreifens 18. Die inneren Ecken 42 oder 48 der Ausnehmungen 42 bzw. 44 liegen jeweils auf den Faltkanten 34 oder 36. Die Streifen 38 und 40 der Isolierschichten 14 und 16 weisen fluchtende, kreisrunde Durchbrüche 50 auf, die an die Innenkanten der u-förmigen Bereiche 26, 28, 30 und 32 angepaßt sind.The insulation layers 14 and 16 are formed by strips 38, 40 with rectangular recesses 42, 44 arranged with a gap between them. The recesses 42, 44 each lie between the u-shaped regions 28 and 32 or 26 and 30 of the metal strip 18 oriented in the same direction. The inner corners 42 or 48 of the recesses 42 and 44 each lie on the folded edges 34 or 36 The strips 38 and 40 of the insulating layers 14 and 16 have aligned, circular openings 50 which are adapted to the inner edges of the U-shaped regions 26, 28, 30 and 32.

Fig.2 zeigt zwei aufeinandergefaltete Bereiche 26 und 28. Der Bereich 28 ist längs der unter 450 zu der Längsachse der Schenkel 22 und 24 verlaufenden Faltkante 34 über den Bereich 26 gelegt. Der Bereich 26 bildet ein in Fig.1 nach oben offenes "U" mit den Schenkeln 22A und 24A. Der Bereich 28 bildet ein in Fig.1 nach rechts hin offenes "U" mit den Schenkeln 22B und 24B. Die beiden "U" sind somit um 90° im Uhrzeigersinn gegeneinander verdreht. Der Bereich 30 ist wieder längs der Faltkante 36 über den Bereich 28 gelegt. Bereich 30 ist in Fig.2 der Deutlichkeit halber nur abgebrochen dargestellt. Der Bereich 30 bildet ein in Fig.2 nach unten offenes "U". Das "U" ist somit weiter im Uhrzeigersinn um 90° gegen das "U" des Bereichs 28 verdreht. Die Bereiche 26, 28, 30, 32 usw. werden somit "spiralig" übereinandergefaltet. Die "U"-Bogen schließen die Durchbrüche 50 der Streifen 38 und 40 ein. Es ergibt sich somit eine durchgehende, gewendelte Leiterbahn um die im gefalteten Zustand fluchtenden Durchbrüche 50 der verschiedenen Abschnitte herum.2 shows two successive folded portions 26 and 28. The region 28 is placed along the at 45 0 to the longitudinal axis of the legs 22 and 24 extending fold edge 34 over the range 26th The area 26 forms a "U" with the legs 22A and 24A which is open at the top in FIG. The area 28 forms a "U" open to the right in FIG. 1 with the legs 22B and 24B. The two "U" are thus rotated 90 ° against each other. The area 30 is again placed along the folded edge 36 over the area 28. Area 30 is only shown broken off in FIG. 2 for the sake of clarity. The area 30 forms a "U" which is open at the bottom in FIG. The "U" is thus rotated further 90 ° clockwise against the "U" of the area 28. The areas 26, 28, 30, 32 etc. are thus "spirally" folded over one another. The "U" arches include the openings 50 of strips 38 and 40. This results in a continuous, coiled conductor track around the openings 50 of the various sections that are aligned when folded.

Ein gerades Stück 52 des Metallstreifens 18 in Verlängerung des Schenkels 22 des Bereichs 26 bildet eine Anschlußklemme. Ein entsprechendes gerades Stück 54 in Verlängerung des Schenkels 24 des letzten u-förmigen Bereichs 56 bildet eine weitere Anschlußklemme (Fig.3).A straight piece 52 of the metal strip 18 in the extension of the leg 22 of the area 26 forms a connection terminal. A corresponding straight piece 54 in the extension of the leg 24 of the last u-shaped area 56 forms a further connection terminal (FIG. 3).

Bei der Ausführung nach Fig.5 und 6 ist ein mäanderförmiger Metallstreifen 58 ähnlich der von Fig.1 vorgesehen. Der Metallstreifen 58 kann betrachtet werden als ein Steifen, der längs seiner Ränder 60 und 62 alternierend von der einen oder von der anderen Seite her mit u-förmigen Ausschnitten 64 bzw. 66 versehen ist. Es werden dabei Abschnitte gleicher Länge gebildet, die in Fig.5 durch die gestrichelten Linien 68 und 70 begrenzt sind und abwechselnd einen nach oben oder nach unten in Fig.5 offenen Ausschnitt 64 bzw. 66 aufweisen. Auf diesen mäanderförmigen Metallstreifen 58 ist auf beiden Seiten je ein Streifen 72, 74 von flexiblen Isolierschichten aufgebracht. Die Streifen 72 und 74 haben hier gerade durchgehende Kanten und im Bereich der Ausschnitte 64 und 66 kreisrunde, fluchtende Durchbrüche 76. Die Durchbrüche 76 sind an die Krümmung der Bögen der Ausschnitte 64, 66 angepaßt.5 and 6, a meandering metal strip 58 similar to that of FIG. 1 is provided. The metal strip 58 can be regarded as a strip which is provided along its edges 60 and 62 alternately from one or the other side with U-shaped cutouts 64 and 66, respectively. Sections of the same length are formed which are delimited in FIG. 5 by the dashed lines 68 and 70 and which alternately have a cutout 64 or 66 which is open upwards or downwards in FIG. A strip 72, 74 of flexible insulating layers is applied to each of these meandering metal strips 58 on both sides. The strips 72 and 74 here have straight edges and in the area of the cutouts 64 and 66 circular, aligned openings 76. The openings 76 are adapted to the curvature of the arches of the cutouts 64, 66.

Wie aus Fig.6 ersichtlich ist, ist der Streifen 78 bestehend aus dem Metallstreifen 58 und den Streifen 72, 74 von Isolierschichten längs der Linien 68, 70 zickzackförmig gefaltet. Dabei fallen die Ausschnitte 64 und 66 übereinander und begrenzen zusammen mit den Durchbrüchen 76 einen zentralen Durchgang 80 von kreisförmigem Querschnitt. Um diesen zentralen Durchgang herum bildet der gefaltete Metallstreifen 58 eine schraubenförmige Leiterbahn, die eine Hochfrequenzwicklung darstellt. Mit dem Durchgang 80 kann diese Wicklung auf einen Kern eines Übertragers aufgesetzt werden.As can be seen from FIG. 6, the strip 78 consisting of the metal strip 58 and the strips 72, 74 of insulating layers is folded in a zigzag fashion along the lines 68, 70. The cutouts 64 and 66 fall over one another and, together with the openings 76, delimit a central passage 80 of circular cross section. Around this central passage, the folded metal strip 58 forms a helical conductor path, which represents a high-frequency winding. With the passage 80, this winding can be placed on a core of a transformer.

Der Metallstreifen kann bei beiden Ausführungen aus dünnem, faltbaren Kupferblech gestanzt und mit den flexiblen Isolierschichten verklebt werden. Der Metallstreifen kann aber auch mittels einer Ätztechnik geformt werden.In both versions, the metal strip can be punched out of thin, foldable copper sheet and glued to the flexible insulating layers. The metal strip can also be formed using an etching technique.

Claims (4)

1. Wicklung, insbesondere Wicklung für Hochfrequenzübertrager, die aus flachen unter Zwischenlage von Isolierschichten (14,16) übereinanderliegenden Leiterschichten (12) besteht, welche mit den Isolierschichten (14,16) einen flexiblen Streifen bilden, von dem zur Bildung der Windungen der Wicklung einzelnen Abschnitte übereinandergefaltet sind, dadurch gekennzeichnet, daß die Leiterschichten (12) von einem flächigen, mäanderförmig zugeschnittenen Metallstreifen (18) mit aneinander anschließenden u-förmigen, je einen bogenförmigen Mittelteil (20) zwischen Schenkeln (22,24) aufweisenden Bereichen (26,28,30,32) gebildet sind, die beiderseits von den Isolierschichten (14,16) abgedeckt ist.1. winding, in particular winding for high-frequency transmitters, which consists of flat conductor layers (12) one above the other with the interposition of insulating layers (14, 16), which form a flexible strip with the insulating layers (14, 16), from which to form the windings of the winding Individual sections are folded over one another, characterized in that the conductor layers (12) are composed of a flat, meandering metal strip (18) with adjoining u-shaped areas (20) each having an arcuate central part (20) between legs (22, 24) 28,30,32) are formed, which is covered on both sides by the insulating layers (14,16). 2. Wicklung nach Anspruch 1, dadurch gekennzeichnet, daß der Streifen längs der Mittellinien (68,70) der Schenkel der u-förmigen Abschnitte zickzackförmig gefaltet ist.2. Winding according to claim 1, characterized in that the strip along the center lines (68,70) of the legs of the U-shaped sections is folded in a zigzag shape. 3. Wicklung nach Anspruch 1, dadurch gekennzeichnet, daß die Streifen zwischen den aneinander anschließenden Schenkeln (22,24) aufeinanderfolgender u-förmiger Bereiche (26,28,30,32) des Metallstreifens (18) unter 45° zur Längsachse dieser Schenkel (22,24) gefaltet ist, so daß der jeweils obere der u-förmigen Bereiche (28,30,32) in stets gleichem Drehsinn um 90° gegen den darunterliegenden u-förmigen Bereich (26,28,30) verdreht angeordnet ist.3. Winding according to claim 1, characterized in that the strips between the adjoining legs (22, 24) of successive U-shaped regions (26, 28, 30, 32) of the metal strip (18) at 45 ° to the longitudinal axis of these legs ( 22,24) is folded so that the respective upper one of the U-shaped areas (28,30,32) is rotated in the same direction by 90 ° relative to the underlying U-shaped area (26,28,30). 4. Wicklung nach Anspruch 3, dadurch gekennzeichnet, daß die Isolationsschichten (14,16) von Streifen (38,40) mit auf Lücke zueinander auf gegenüberliegenden Seiten angeordneten rechteckigen Ausnehmungen (42,44) gebildet sind, wobei die Ausnehmungen (42,44) jeweils zwischen den in gleicher Richtung orientierten u-förmigen Bereichen (28,32 bzw. 26,30) des Metallstreifens (18) liegen und mit ihren inneren Ecken (46,48) auf den Faltkanten (34,36) liegen.4. Winding according to claim 3, characterized in that the insulation layers (14, 16) are formed by strips (38, 40) with rectangular recesses (42, 44) arranged on a gap with one another on opposite sides, the recesses (42, 44 ) each lie between the u-shaped areas (28, 32 and 26.30) of the metal strip (18) oriented in the same direction and lie with their inner corners (46, 48) on the folded edges (34, 36).
EP91112956A 1990-08-02 1991-08-01 Winding, especially for radiofrequency transformers Withdrawn EP0469609A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4024507 1990-08-02
DE19904024507 DE4024507A1 (en) 1990-08-02 1990-08-02 HIGH FREQUENCY WINDING

Publications (1)

Publication Number Publication Date
EP0469609A1 true EP0469609A1 (en) 1992-02-05

Family

ID=6411488

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91112956A Withdrawn EP0469609A1 (en) 1990-08-02 1991-08-01 Winding, especially for radiofrequency transformers

Country Status (2)

Country Link
EP (1) EP0469609A1 (en)
DE (1) DE4024507A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000055873A1 (en) * 1999-03-16 2000-09-21 Vishay Dale Electronics, Inc. Inductor coil structure and method for making same
US7034645B2 (en) 1999-03-16 2006-04-25 Vishay Dale Electronics, Inc. Inductor coil and method for making same
US7263761B1 (en) 1995-07-18 2007-09-04 Vishay Dale Electronics, Inc. Method for making a high current low profile inductor
EP2056309A1 (en) 2007-09-25 2009-05-06 STZ Mechatronik Method for manufacturing a spool and a spool
US7921546B2 (en) 1995-07-18 2011-04-12 Vishay Dale Electronics, Inc. Method for making a high current low profile inductor
US9318251B2 (en) 2006-08-09 2016-04-19 Coilcraft, Incorporated Method of manufacturing an electronic component

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4431603A1 (en) * 1994-09-05 1996-03-07 Siemens Ag Antenna coil

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE906831C (en) * 1951-12-11 1954-03-18 Rudolf Sliwka Simplified manufacture of induction coils, chokes and transformers
US2943966A (en) * 1953-12-30 1960-07-05 Int Standard Electric Corp Printed electrical circuits
US3002260A (en) * 1961-10-03 shortt etal
DE2632039A1 (en) * 1976-07-16 1978-01-19 Reinshagen Kabelwerk Gmbh Coil consisting of flexible printed circuit board - has supporting foil with transversal cuttings spread out so that conducting trace is helical
DE3148192A1 (en) * 1981-12-05 1983-06-09 Robert Bosch Gmbh, 7000 Stuttgart Electrical coil consisting of conductor tracks
US4581598A (en) * 1984-06-19 1986-04-08 Westinghouse Electric Corp. Segmented toroidal air-core transformer
DE3643044A1 (en) * 1986-12-17 1988-06-30 Ivan Bystrican Folded coil

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1006915B (en) * 1956-05-12 1957-04-25 Grundig Max Broadband high frequency transformation line
DE2260492A1 (en) * 1972-12-11 1974-06-12 Wilfried Strauss ELECTRIC TRANSFORMER WITH PRINTED ARRANGEMENT

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3002260A (en) * 1961-10-03 shortt etal
DE906831C (en) * 1951-12-11 1954-03-18 Rudolf Sliwka Simplified manufacture of induction coils, chokes and transformers
US2943966A (en) * 1953-12-30 1960-07-05 Int Standard Electric Corp Printed electrical circuits
DE2632039A1 (en) * 1976-07-16 1978-01-19 Reinshagen Kabelwerk Gmbh Coil consisting of flexible printed circuit board - has supporting foil with transversal cuttings spread out so that conducting trace is helical
DE3148192A1 (en) * 1981-12-05 1983-06-09 Robert Bosch Gmbh, 7000 Stuttgart Electrical coil consisting of conductor tracks
US4581598A (en) * 1984-06-19 1986-04-08 Westinghouse Electric Corp. Segmented toroidal air-core transformer
DE3643044A1 (en) * 1986-12-17 1988-06-30 Ivan Bystrican Folded coil

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7221249B2 (en) 1995-07-18 2007-05-22 Vishay Dale Electronics, Inc. Inductor coil
US7986207B2 (en) 1995-07-18 2011-07-26 Vishay Dale Electronics, Inc. Method for making a high current low profile inductor
US7921546B2 (en) 1995-07-18 2011-04-12 Vishay Dale Electronics, Inc. Method for making a high current low profile inductor
US6946944B2 (en) 1995-07-18 2005-09-20 Vishay Dale Electronics, Inc. Inductor coil and method for making same
US7345562B2 (en) 1995-07-18 2008-03-18 Vishay Dale Electronics, Inc. Method for making a high current low profile inductor
US7263761B1 (en) 1995-07-18 2007-09-04 Vishay Dale Electronics, Inc. Method for making a high current low profile inductor
US7034645B2 (en) 1999-03-16 2006-04-25 Vishay Dale Electronics, Inc. Inductor coil and method for making same
CN1302492C (en) * 1999-03-16 2007-02-28 维舍戴尔电子股份有限公司 Inductor coil structure and method for making same
WO2000055873A1 (en) * 1999-03-16 2000-09-21 Vishay Dale Electronics, Inc. Inductor coil structure and method for making same
US6449829B1 (en) 1999-03-16 2002-09-17 Vishay Dale Electronics, Inc. Method for making inductor coil structure
US6198375B1 (en) 1999-03-16 2001-03-06 Vishay Dale Electronics, Inc. Inductor coil structure
US9318251B2 (en) 2006-08-09 2016-04-19 Coilcraft, Incorporated Method of manufacturing an electronic component
US10319507B2 (en) 2006-08-09 2019-06-11 Coilcraft, Incorporated Method of manufacturing an electronic component
US11869696B2 (en) 2006-08-09 2024-01-09 Coilcraft, Incorporated Electronic component
US12094633B2 (en) 2006-08-09 2024-09-17 Coilcraft, Incorporated Method of manufacturing an electronic component
EP2056309A1 (en) 2007-09-25 2009-05-06 STZ Mechatronik Method for manufacturing a spool and a spool

Also Published As

Publication number Publication date
DE4024507A1 (en) 1992-02-06

Similar Documents

Publication Publication Date Title
DE3731286C2 (en)
EP0092555B1 (en) Tag-shaped identification device attachable to an object
DE69703043T2 (en) MONOLITHIC SEAL-VIEW INDUCTOR AND THEIR PRODUCTION PROCESS
DE3880856T2 (en) BENDING DETECTION BRAND.
DE4317545A1 (en) Thin film transformer
DE102005031165A1 (en) Printed circuit board for e.g. mobile phone, has conductive via holes connecting coil conductor patterns such that patterns and holes form spiral conductor, and lead out patterns connected to inner and outer ends of conductor
DE69502006T2 (en) Transformers
DE10112460A1 (en) Multi-layer inductor for choke coil or LC filter has core component wound with successive thin-film coils wound in opposing directions in alternation and electrically connected in series
DE68908234T2 (en) Integrated capacitor and coils / transformers with insulated, amorphous metal tape.
DE6915256U (en) ELECTRIC COILS AND METHOD OF MANUFACTURING THEREOF
EP0035964A1 (en) Induction disk winding
EP0187771B1 (en) High frequency transformer
DE3912697A1 (en) NOISE PROTECTION FILTER
DE60123388T2 (en) CAPACITOR ELEMENT FOR A POWER CAPACITOR, POWER CAPACITOR WITH SUCH ELEMENT AND METALLIZED FILM FOR A POWER CAPACITOR
EP0469609A1 (en) Winding, especially for radiofrequency transformers
DE60130572T2 (en) INDUCTIVE COMPONENTS
DE10040415C1 (en) Inductive component for transformer or choke coil has cylindrical coil body formed from 2 spiral conductor bands
DE4115394A1 (en) THICK LAYER MAGNETIC HEAD
DE9114783U1 (en) Flat form planar transformer for use in offline switching power supplies
DE2543762A1 (en) COIL FOR GENERATING A MAGNETIC FIELD
DE3143210A1 (en) Electrical component
DD290738A5 (en) TRANSMIT AND / OR RECEIVER COIL FROM MULTIVILLATE PLATE
DE4007614A1 (en) Inductive element, esp. HF transformer - has conductor wound spirally around magnetic core and held inside winding block
DE1239773B (en) Folded windings for transformers, choke coils and similar induction devices are printed on a band-shaped carrier made of insulating material
DE19953237C2 (en) Multi-layer planar coil arrangement and method for producing a planar coil arrangement

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19920806