EP0069973A1 - Transformer coil - Google Patents

Transformer coil Download PDF

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Publication number
EP0069973A1
EP0069973A1 EP82106040A EP82106040A EP0069973A1 EP 0069973 A1 EP0069973 A1 EP 0069973A1 EP 82106040 A EP82106040 A EP 82106040A EP 82106040 A EP82106040 A EP 82106040A EP 0069973 A1 EP0069973 A1 EP 0069973A1
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EP
European Patent Office
Prior art keywords
coil
winding
support points
winding support
core
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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.)
Granted
Application number
EP82106040A
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German (de)
French (fr)
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EP0069973B1 (en
Inventor
Erwin Ing.grad. Müller
Josef Robl
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Siemens AG
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Siemens AG
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Publication of EP0069973A1 publication Critical patent/EP0069973A1/en
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Publication of EP0069973B1 publication Critical patent/EP0069973B1/en
Expired legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00Coils
    • H01F5/02Coils wound on non-magnetic supports, e.g. formers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00Coils
    • H01F5/04Arrangements of electric connections to coils, e.g. leads

Definitions

  • the invention relates to a coil former made of insulating material with flanges formed on both ends and with a core bore for receiving an axially arranged iron core which extends beyond the coil flanges.
  • Coil formers with and without iron core are known in many forms. For certain applications, however, problems arise in production, for example if the iron core of a transformer coil is widened at both ends in such a way that it can no longer be inserted in one piece into the core bore. In such coils, it is therefore customary either to isolate the core, which is provided in one piece with two iron flanges, without the bobbin, only with varnish on the surface, or to line it with insulating films and then to wind it, or to put on plastic half-shells instead of this varnish insulation.
  • the object of the invention is to design a bobbin of the type mentioned at the outset in such a way that both the manufacture and the winding and, if appropriate, the assembly of a multi-part slotted core is possible in a simple and inexpensive manner.
  • the one-piece coil former has an integrally formed longitudinal rib in the region of the core bore, in the extension of which at least one coil flange carries winding support points.
  • the inventive design of a coil former makes it possible, for example, to insert a two-part slotted core from the two ends into the coil former and to align the slots in each case on the longitudinal rib of the coil former.
  • winding support points in the extension of this longitudinal rib these also come into the slot of the coil core when the core outside the coil is enlarged in a disk shape over the entire radius of the coil flange.
  • These winding support points can be provided on a rib-shaped extension of the longitudinal rib, this extension coming to rest in a radial recess in the core, which for example extends outside the coil to form an iron flange.
  • winding support points are expediently arranged one above the other in the radial direction on the coil flange in order to obtain good insulation for the applied winding ends even in a narrow slot in the iron flange.
  • the winding support points themselves can be formed on the coil flange or on the rib-shaped extension in the form of two hook-shaped lugs.
  • the winding axes of the two winding support points form such an angle with respect to one another that, depending on the winding movement of the wire on a winding support point because other winding base is not touched. The angle required for this can be determined in individual cases on the basis of the size relationships of the coil flange and the winding support points.
  • the winding support points have grooves which are recessed at least on one side, as a result of which the distance between the wound winding ends and a slotted iron core is also increased. It would also be beneficial to fix the winding ends in recessed grooves all around, but in general the one-sided groove is easier to manufacture using tools. Furthermore, it is expedient that the coil flange carrying the winding support points is axially slotted next to these winding support points and thus enables the wire entry of the winding start.
  • the winding support points can also be embedded in the form of wires in the end of the longitudinal rib or in the extension thereof.
  • further metal inserts can also be embedded in the longitudinal rib, for example in order to shift the phase in the case of a transformer. With a corresponding design of the longitudinal rib with chambers, metal parts of this type can also be inserted subsequently.
  • a bobbin 1 which preferably consists of elastic, temperature-resistant, thermoplastic insulating material.
  • the winding 3 which is only indicated, is applied to the coil tube 2 and is delimited by the flanges 4 and 5 at both ends of the coil body.
  • the core bore 6 serves to receive an iron core, as is shown, for example, in FIG. 4.
  • the bobbin has a longitudinal rib 7 in the bore 6, which extends beyond the flange 4 into a rib-shaped extension 8 and forms two hook-shaped winding support points 9 and 10. This makes it possible to use a core with an iron flange overlapping the coil flange 4 if it has a slot for receiving the rib-shaped extension 8.
  • This slot can be relatively narrow. be, since the winding support points 9 and 10 are arranged radially one above the other in a line. This means that coils that are to accommodate a core with iron flanges can also be wound quickly and inexpensively, since even very thin untwisted winding ends can be wound quickly at the winding support points 9 and 10 and the binding and knotting of the winding ends previously required in such coils is no longer required. In addition, due to the lack of the tying knots, there is a considerable gain in changing space.
  • the coil flange 4 has a slot 12 for the wire entry of the winding start 11, the slot edges are also rounded, and an inlet bevel 13 is formed on the coil flange with a small angle.
  • the winding end 14 is again in turn guided through the slot 12 of the coil flange 4 onto the winding base 10.
  • Both winding support points 9 and 10 are inclined relative to one another in their winding axis in such a way that when the one support point is wound up, the other one Looping movement of the wire is not impeded.
  • the angles of the winding plane ⁇ at the winding base 9 and 0 at the winding base 10 are chosen to be correspondingly large with respect to the end plane of the coil former, taking into account the distances between these two winding bases and the other dimensions.
  • winding support points 9 and 10 secure the winding ends against slipping.
  • these winding support points continue to have grooves 15 on one side, so that the applied winding ends can be flush with the lateral surface of the winding support points.
  • the winding support points could also be provided with grooves on all sides, but this would result in a more complicated tool design for the manufacture of the coil former.
  • the coil flanges 4 and 5 are on the one hand tapered outwards for reasons of strength and shape, and on the other hand to facilitate mechanized winding and are rounded on the inside edges.
  • FIGS. 4 and 5 show the application of the coil former from FIGS. 1 to 3 in a transformer, as is used, for example, in a slip ring-less resolver.
  • a two-part core is arranged in the coil former 1 with the winding 2, the two parts 16 and 17 of which are each inserted into the core bore from the coil ends.
  • these core halves 16 and 17 are each sleeve-shaped and placed with their inner bore on a rotor shaft 18.
  • Core halves are each formed into iron flanges 19 and 20, which extend in the radial direction next to the coil flanges and each form air gaps 25 with respect to the iron core 21 of a stator coil 22 (bearings are not shown).
  • the core halves 16 and 17 including their iron flanges 19 and 20 are continuously provided with a slot 23, by means of which they are aligned with the longitudinal rib 7 of the coil body 1.
  • the slot 23 is expanded to a recess 24 in order to ensure a sufficient insulating distance from the wound winding ends of the coil 3.
  • 6 to 10 show modified versions of the bobbin 1 in a schematic representation.
  • 6 shows a bobbin 31 which has a chamber 33 in the longitudinal rib 32 which, for example, can accommodate short-circuiting pieces for phase shifting a transformer.
  • Such metal parts can be subsequently inserted into the chamber 33 or embedded during the manufacture of the coil former.
  • winding support points which also serve as soldering support points, can be provided, for example, on the invisible side of the opposite coil flange 34.
  • FIG. 7 shows a coil body 41 with a longitudinal rib 42, in which two wire pieces 44 and 45 are embedded as winding support points in the area of the coil flange 43.
  • the longitudinal rib 52 on the coil flange 53 has an extension 54 which also has embedded winding support points in the form of wires 55 and 56.
  • the wires are arranged at an angle to one another such that the winding movement of the wire around one winding base does not hinder the other winding base.
  • bobbin 61 the longitudinal rib 62 of which forms two webs 63 and 64. These webs in turn form a chamber for inserts, such as short-circuit pieces or other metal inserts.
  • these webs 63 and 64 each have extensions 65 and 66, which extend along the coil flange 67 in the radial direction. This enables angled inserts to be insulated up to the outer diameter of the coil flange.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulating Of Coils (AREA)

Abstract

1. A transformer coil comprising in integral coil body (1) of insulating material having flanges (4, 5) formed on each end, and a core bore (6), in the region of which a longitudinal rib (7) is formed ; winding supports (9, 10) arranged on at least one coil flange ; and an iron core which arranged in the core bore (6) and extends axially beyond the coil flanges, characterised in - that the iron core is divided transversely to its longitudinal direction into two core parts (16, 17) which, in the longitudinal direction, respectively have a slot (23) which completely divides the wall of the core and an attached flange (19, 20) at their ends which protrude beyond the coil body (1, 31, 41, 51, 61) ; - that the longitudinal rib (7, 32, 42, 52, 62) of the coil body (1, 31, 41, 51, 61) engages into the slots (23) of the two core parts (16, 17) ; and - that the winding supports (9, 10, 44, 45, 55, 56) are arranged at the end of the longitudinal rib (7, 32, 42, 52, 62).

Description

Die Erfindung bezieht sich auf einen Spulenkörper aus Isolierstoff mit an beiden Enden angeformten Flanschen sowie mit einer Kernbohrung zur Aufnahme eines axial angeordneten, sich über die Spulenflansche hinaus erstreckenden Eisenkerns.The invention relates to a coil former made of insulating material with flanges formed on both ends and with a core bore for receiving an axially arranged iron core which extends beyond the coil flanges.

Spulenkörper mit und ohne Eisenkern sind in vielen Formen bekannt. Für bestimmte Anwendungen ergeben sich jedoch Probleme in der Fertigung, wenn beispielsweise der Eisenkern einer Transformatorspule an beiden Enden derart verbreitert ist, daß er nicht mehr einstückig in die Kernbohrung eingeschoben werden kann. Bei derartigen Spulen ist es deshalb üblich, entweder den einstückig mit zwei Eisenflanschen ausgestatteten Kern ohne Spulenkörper lediglich mit Lack oberflächlich zu isolieren oder mit Isolierfolien auszukleiden und dann zu bewickeln oder anstelle dieser Lackisolierung Kunststoffhalbschalen aufzuschieben. In beiden Fällen ist es schwierig und aufwendig, den Eisenkern sicher von der Wicklung zu isolieren; außerdem ist, abgesehen vom Wickelraumverlust, der Wickelvorgang fertigungstechnisch erschwert, da Wickelstützpunkte, wie sie an anderen Spulenkörpern durchaus bekannt sind, fehlen und somit die Wicklungsenden einzeln abgebunden werden müssen. Wollte man jedoch einen in anderem Zusammenhang bekannten einteiligen Spulenkörper verwenden, so läßt sich der Kern nur in mindestens zwei Teilen einbringen; da Transformatorkerne im allgemeinen zur Vermeidung von Wirbelströmen geschlitzt ausgeführt werden, müßten die jeweiligen Kernschlitze im Spulenkörper durch zusätzliche Fertigungsmaßnal-men ausgerichtet werden.Coil formers with and without iron core are known in many forms. For certain applications, however, problems arise in production, for example if the iron core of a transformer coil is widened at both ends in such a way that it can no longer be inserted in one piece into the core bore. In such coils, it is therefore customary either to isolate the core, which is provided in one piece with two iron flanges, without the bobbin, only with varnish on the surface, or to line it with insulating films and then to wind it, or to put on plastic half-shells instead of this varnish insulation. In both cases, it is difficult and expensive to safely isolate the iron core from the winding; In addition, apart from the loss of the winding space, the winding process is more difficult in terms of production technology, since winding bases, as are well known on other bobbins, are missing and the winding ends must therefore be tied off individually. However, if one wanted to use a one-piece coil former known in another context, the core can only be introduced in at least two parts; since transformer cores are generally slotted to avoid eddy currents, the respective core slots in the coil former would have to be aligned by additional manufacturing measures.

Aufgabe der Erfindung ist es, einen Spulenkörper der eingangs erwähnten Art so auszubilden, daß sowohl die Herstellung als auch das Bewickeln und gegebenenfalls die Montage eines mehrteiligen geschlitzten Kerns in einfacher und kostengünstiger Weise möglich wird.The object of the invention is to design a bobbin of the type mentioned at the outset in such a way that both the manufacture and the winding and, if appropriate, the assembly of a multi-part slotted core is possible in a simple and inexpensive manner.

Erfindungsgemäß wird dies dadurch erreicht, daß der einteilige Spulenkörper im Bereich der Kernbohrung eine angeformte Längsrippe besitzt, in deren Verlängerung zumindest ein Spulenflansch Wickelstützpunkte trägt.According to the invention, this is achieved in that the one-piece coil former has an integrally formed longitudinal rib in the region of the core bore, in the extension of which at least one coil flange carries winding support points.

Durch die erfindungsgemäße Gestaltung eines Spulenkörpers wird es beispielsweise möglich, einen zweiteiligen geschlitzten Kern von den zwei Enden her in den Spulenkörper einzuschieben und die Schlitze jeweils an der Längsrippe des Spulenkörpers auszurichten. Durch die weiterhin vorgesehene Anordnung von Wickelstützpunkten in Verlängerung dieser Längsrippe kommen diese auch dann in den Schlitz des Spulenkerns zu liegen, wenn der Kern außerhalb der Spule scheibenförmig über den ganzen Radius des Spulenflansches vergrößert ist. Diese Wickelstützpunkte können an einem rippenförmigen Fortsatz der Längsrippe vorgesehen sein, wobei dieser Fortsatz in eine radiale Ausnehmung des beispielsweise außerhalb der Spule zu einem Eisenflansch erweiterten Kerns zu liegen kommt. Zweckmäßigerweise sind dabei zwei oder mehr Wickelstützpunkte.am Spulenflansch in Radialrichtung übereinander angeordnet, um auch in einem schmalen Schlitz des Eisenflansches eine gute Isolierung für die aufgebrachten Wicklungsenden zu erhalten. Die Wickelstützpu_nkte selbst können dabei an dem Spulenflansch bzw. an dem rippenförmigen Fortsatz in Form zweier hakenförmiger Nasen angeformt sein. Zum Bewickeln ist es dabei von Vorteil, wenn die Wickelachsen der beiden Wickelstützpunkte gegeneinander einen derartigen Winkel bilden, daß durch die Schlingbewegung des Drahtes auf einem Wickelstützpunkt der jeweils andere Wickelstützpunkt nicht berührt wird. Der jeweils hierfür notwendige Winkel läßt sich im Einzelfall anhand der Größenverhältnisse des Spulenflansches und der Wickelstützpunkte selbst ermitteln.The inventive design of a coil former makes it possible, for example, to insert a two-part slotted core from the two ends into the coil former and to align the slots in each case on the longitudinal rib of the coil former. As a result of the arrangement of winding support points in the extension of this longitudinal rib, these also come into the slot of the coil core when the core outside the coil is enlarged in a disk shape over the entire radius of the coil flange. These winding support points can be provided on a rib-shaped extension of the longitudinal rib, this extension coming to rest in a radial recess in the core, which for example extends outside the coil to form an iron flange. In this case, two or more winding support points are expediently arranged one above the other in the radial direction on the coil flange in order to obtain good insulation for the applied winding ends even in a narrow slot in the iron flange. The winding support points themselves can be formed on the coil flange or on the rib-shaped extension in the form of two hook-shaped lugs. For winding, it is advantageous if the winding axes of the two winding support points form such an angle with respect to one another that, depending on the winding movement of the wire on a winding support point because other winding base is not touched. The angle required for this can be determined in individual cases on the basis of the size relationships of the coil flange and the winding support points.

Zur Aufnahme der Wicklungsenden besitzen die Wickelstützpunkte zumindest einseitig vertiefte Nuten, wodurch auch der Abstand der angewickelten Wicklungsenden gegenüber einem geschlitzten Eisenkern vergrößert wird. Günstig wäre zwar auch eine Befestigung der Wicklungsenden in ringsum vertieften Nuten, doch ist im allgemeinen die einseitige Nut werkzeugmäßig einfacher herzustellen. Weiterhin ist es zweckmäßig, daß der die Wickelstützpunkte tragende Spulenflansch neben diesen Wickelstützpunkten axial geschlitzt ist und somit den Drahteinlauf des Wicklungsanfanges ermöglicht.To accommodate the winding ends, the winding support points have grooves which are recessed at least on one side, as a result of which the distance between the wound winding ends and a slotted iron core is also increased. It would also be beneficial to fix the winding ends in recessed grooves all around, but in general the one-sided groove is easier to manufacture using tools. Furthermore, it is expedient that the coil flange carrying the winding support points is axially slotted next to these winding support points and thus enables the wire entry of the winding start.

Die Wickelstützpunkte können auch in Form von Drähten in das Ende der Längsrippe bzw. in deren Fortsatz eingebettet sein. Im übrigen können in einer Weiterbildung der Erfindung auch weitere Metalleinlagen in der Längsrippe eingebettet sein, um beispielsweise bei einem Transformator die Phase zu verschieben. Bei entsprechender Gestaltung der Längsrippe mit Kammern können derartige Metallteile auch nachträglich eingelegt werden.The winding support points can also be embedded in the form of wires in the end of the longitudinal rib or in the extension thereof. Furthermore, in a further development of the invention, further metal inserts can also be embedded in the longitudinal rib, for example in order to shift the phase in the case of a transformer. With a corresponding design of the longitudinal rib with chambers, metal parts of this type can also be inserted subsequently.

Die Erfindung wird nachfolgend an Ausführungsbeispielen anhand der Zeichnung näher erläutert..Es zeigen

  • Fig. 1 bis 3 einen erfindungsgemäß gestalteten Spulen- körper in drei Ansichten,
  • Fig. 4 und 5 die Anwendung des Spulenkörpers von Fig. 1 bis 3 in einem Transformator,
  • Fig. 6 bis 10 weitere Ausgestaltungsmöglichkeiten des Spulenkörpers in schematischer Darstellung.
The invention is explained in more detail below using exemplary embodiments with reference to the drawing
  • 1 to 3 an inventive coil body in three views,
  • 4 and 5, the application of the bobbin of Fig. 1 to 3 in a transformer,
  • Fig. 6 to 10 further design options of the coil body in a schematic representation.

Die Fig. 1 bis 3 zeigen einen Spulenkörper 1, der vorzugsweise aus elastischem, temperaturfestem, thermoplastischem Isolierstoff besteht. Auf dem Spulenrohr 2 ist die nur angedeutete Wicklung 3 aufgebracht, die an beiden Enden des Spulenkörpers durch die Flansche 4 und 5 begrenzt wird. Die Kernbohrung 6 dient zur Aufnahme eines Eisenkerns, wie er beispielsweise in Fig. 4 dargestellt ist. Zur Ausrichtung eines geschlitzten, gegebenenfalls mehrteiligen Kerns besitzt der Spulenkörper in der Bohrung 6 eine Längsrippe 7, die über den Flansch 4 hinaus verlängert in einen rippenförmigen Fortsatz 8 übergeht und zwei hakenförmige Wickelstützpunkte 9 und 10 bildet. Dadurch ist es möglich, auch einen Kern mit einem den Spulenflansch 4 übergreifenden Eisenflansch zu verwenden, wenn dieser einen Schlitz zur Aufnahme des rippenförmigen Fortsatzes 8 besitzt. Dieser Schlitz kann relativ schmal . sein, da die Wickelstützpunkte 9 und 10 radial übereinander in einer Linie angeordnet sind. Damit können auch Spulen, die einen Kern mit Eisenflanschen aufnehmen sollen, schnell und kostengünstig gewickelt werden, da auch sehr dünne unverdrallte Wicklungsenden an den Wickelstützpunkten 9 und 10 rasch angewickelt werden können und das bei derartigen-Spulen bisher erforderliche Abbinden und Verknoten der Wicklungsenden entfällt. Außerdem ergibt sich wegen des Fehlens der Abbindeknoten ein erheblicher Wickelraumgewinn.1 to 3 show a bobbin 1, which preferably consists of elastic, temperature-resistant, thermoplastic insulating material. The winding 3, which is only indicated, is applied to the coil tube 2 and is delimited by the flanges 4 and 5 at both ends of the coil body. The core bore 6 serves to receive an iron core, as is shown, for example, in FIG. 4. To align a slotted, possibly multi-part core, the bobbin has a longitudinal rib 7 in the bore 6, which extends beyond the flange 4 into a rib-shaped extension 8 and forms two hook-shaped winding support points 9 and 10. This makes it possible to use a core with an iron flange overlapping the coil flange 4 if it has a slot for receiving the rib-shaped extension 8. This slot can be relatively narrow. be, since the winding support points 9 and 10 are arranged radially one above the other in a line. This means that coils that are to accommodate a core with iron flanges can also be wound quickly and inexpensively, since even very thin untwisted winding ends can be wound quickly at the winding support points 9 and 10 and the binding and knotting of the winding ends previously required in such coils is no longer required. In addition, due to the lack of the tying knots, there is a considerable gain in changing space.

Der Spulenflansch 4 besitzt für den Drahteinlauf des Wicklungsanfangs 11 einen Schlitz 12, außerdem sind die Schlitzkanten verrundet,und am Spulenflansch ist eine Einlaufschräge 13 mit einem kleinen Winkel angeformt. Das Wicklungsende 14 wird entsprechend wiederum durch den Schlitz 12 des Spulenflansches 4 auf den Wickelstützpunkt10 geführt. Beide Wickelstützpunkte 9 und 10 sind in ihrer Wickelachse gegeneinander derart geneigt, daß beim Anwickeln an den einen Stützpunkt der jeweils andere die Schlingbewegung des Drahtes nicht behindert. Zu diesem Zweck werden die Winkel der Anwickelebene α beim Wickelstützpunkt 9 und 0 beim Wickelstützpunkt 10 unter Berücksichtigung der Abstände dieser beiden Wickelstützpunkte und der sonstigen Abmessungen entsprechend groß gegenüber der Stirnebene des Spulenkörpers gewählt.The coil flange 4 has a slot 12 for the wire entry of the winding start 11, the slot edges are also rounded, and an inlet bevel 13 is formed on the coil flange with a small angle. The winding end 14 is again in turn guided through the slot 12 of the coil flange 4 onto the winding base 10. Both winding support points 9 and 10 are inclined relative to one another in their winding axis in such a way that when the one support point is wound up, the other one Looping movement of the wire is not impeded. For this purpose, the angles of the winding plane α at the winding base 9 and 0 at the winding base 10 are chosen to be correspondingly large with respect to the end plane of the coil former, taking into account the distances between these two winding bases and the other dimensions.

Durch die Hakenform der Wickelstützpunkte 9 und 10 werden die Wicklungsenden gegen Abrutschen gesichert. Zu einer noch besseren Fixierung der Spulenenden und auch zur Erhöhung der Isolationsfestigkeit durch Vergrößerung der Luftstrecken zu den Metallteilen besitzen diese Wickelstützpunkte weiterhin an einer Seite Nuten 15, so daß die aufgebrachten Wicklungsenden mit der seitlichen Oberfläche der.Wickelstützpunkte bündig liegen können. Die Wickelstützpunkte könnten auch allseitig mit Nuten versehen werden, doch ergäbe sich in diesem Fall eine kompliziertere Werkzeuggestaltung für die Fertigung des Spulenkörpers.The hook ends of the winding support points 9 and 10 secure the winding ends against slipping. For an even better fixation of the coil ends and also to increase the insulation strength by increasing the air gaps to the metal parts, these winding support points continue to have grooves 15 on one side, so that the applied winding ends can be flush with the lateral surface of the winding support points. The winding support points could also be provided with grooves on all sides, but this would result in a more complicated tool design for the manufacture of the coil former.

Die Spulenflansche 4 und 5 sind einerseits aus Festigkeitsgründen und formtechnischen Gründen sowie andererseits zur Erleichterung der mechanisierten Bewicklung nach außen konisch verjüngt und an den Innenkanten verrundet.The coil flanges 4 and 5 are on the one hand tapered outwards for reasons of strength and shape, and on the other hand to facilitate mechanized winding and are rounded on the inside edges.

Fig. 4 und 5 zeigen die Anwendung des Spulenkörpers aus den Fig. 1 bis 3 in einem Transformator, wie er beispielsweise bei einem schleifringlosen Drehmelder verwendet wird. Dabei ist im Spulenkörper 1 mit der Wicklung 2 ein zweiteiliger Kern angeordnet, dessen beide Teile 16 und 17 jeweils von den Spulenenden her in die Kernbohrung eingeschoben sind. Im Bereich des Spulenrohres sind diese Kernhälften 16 und 17 jeweils hülsenförmig ausgebildet und mit ihrer Innenbohrung auf eine Rotorwelle 18 aufgesetzt. An den Spulenenden sind diese Kernhälften jeweils zu Eisenflanschen 19 und 20 ausgeformt, welche sich in Radialrichtung neben den Spulenflanschen erstrecken und jeweils Luftspalte 25 gegenüber dem Eisenkern 21 einer Statorspule 22 bilden (Lager sind nicht gezeichnet).4 and 5 show the application of the coil former from FIGS. 1 to 3 in a transformer, as is used, for example, in a slip ring-less resolver. In this case, a two-part core is arranged in the coil former 1 with the winding 2, the two parts 16 and 17 of which are each inserted into the core bore from the coil ends. In the area of the coil tube, these core halves 16 and 17 are each sleeve-shaped and placed with their inner bore on a rotor shaft 18. These are at the coil ends Core halves are each formed into iron flanges 19 and 20, which extend in the radial direction next to the coil flanges and each form air gaps 25 with respect to the iron core 21 of a stator coil 22 (bearings are not shown).

Die Kernhälften 16 und 17 einschließlich ihrer Eisenflansche 19 und 20 sind durchgehend mit einem Schlitz 23 versehen, mit Hilfe dessen sie an der Längsrippe 7 des Spulenkörpers 1 ausgerichtet werden. Im Bereich des rippenförmigen Fortsatzes 8 mit den Wickelstützpunkten 9 und 10 (siehe Fig. 1) ist der Schlitz 23 zu einer Ausnehmung 24 erweitert, um eine genügende Isolierstrecke gegenüber den angewickelten Wicklungsenden der Spule 3 zu gewährleisten.The core halves 16 and 17 including their iron flanges 19 and 20 are continuously provided with a slot 23, by means of which they are aligned with the longitudinal rib 7 of the coil body 1. In the area of the rib-shaped extension 8 with the winding support points 9 and 10 (see FIG. 1), the slot 23 is expanded to a recess 24 in order to ensure a sufficient insulating distance from the wound winding ends of the coil 3.

Die Fig. 6 bis 10 zeigen abgewandelte Ausführungen des Spulenkörpers 1 in schematischer Darstellung. So ist in Fig. 6 ein Spulenkörper 31 gezeigt, der in der Längsrippe 32 eine Kammer 33 aufweist, welche beispielsweise Kurzschlußstücke zur Phasenverschiebung eines Transformators aufnehmen kann. Solche Metallteile können in die Kammer 33 nachträglich eingesteckt oder bereits bei Herstellung des Spulenkörpers mit eingebettet werden. Anwickelstützpunkte, die gleichzeitig als LötstUtzpunkte dienen, können in diesem Fall beispielsweise auf der nicht sichtbaren Seite des entgegengesetzten Spulenflansches 34 vorgesehen sein.6 to 10 show modified versions of the bobbin 1 in a schematic representation. 6 shows a bobbin 31 which has a chamber 33 in the longitudinal rib 32 which, for example, can accommodate short-circuiting pieces for phase shifting a transformer. Such metal parts can be subsequently inserted into the chamber 33 or embedded during the manufacture of the coil former. In this case, winding support points, which also serve as soldering support points, can be provided, for example, on the invisible side of the opposite coil flange 34.

Fig. 7 zeigt einen Spulen-körper 41 mit einer Längsrippe 42, in welche im Bereich des Spulenflansches 43 zwei Drahtstücke 44 und 45 als Wickelstützpunkte eingebettet sind. Beim Spulenkörper 51 gemäß Fig. 8 besitzt die Längsrippe 52 am Spulenflansch 53 einen Fortsatz 54, der ebenfalls eingebettete Wickelstützpunkte in Form von Drähten 55 und 56 besitzt. In diesem Fall sind die Drähte zueinander in einem derartigen Winkel angeordnet, daß bei der Schlingbewegung des Drahtes um den einen Wickelstützpunkt der andere Wickelstützpunkt nicht behindert.7 shows a coil body 41 with a longitudinal rib 42, in which two wire pieces 44 and 45 are embedded as winding support points in the area of the coil flange 43. In the bobbin 51 according to FIG. 8, the longitudinal rib 52 on the coil flange 53 has an extension 54 which also has embedded winding support points in the form of wires 55 and 56. In this case, the wires are arranged at an angle to one another such that the winding movement of the wire around one winding base does not hinder the other winding base.

Die Fig. 9 und 10 zeigen schließlich in einer weiteren Abwandlung einen Spulenkörper 61, deren Längsrippe 62 zwei Stege 63 und 64 bildet. Diese Stege bilden wiederum eine Kammer für Einlegeteile, wie beispielsweise Kurzschlußstücke oder sonstige Metalleinlagen. In Fig. 10 besitzen diese Stege 63 und 64 jeweils Fortsätze 65 und 66, die'sich entlang des Spulenflansches 67 in Radialrichtung erstrecken. Damit können abgewinkelte Einlegeteile isoliert bis an den Außendurchmesser des Spulenflansches geführt werden.9 and 10 finally show in a further modification a bobbin 61, the longitudinal rib 62 of which forms two webs 63 and 64. These webs in turn form a chamber for inserts, such as short-circuit pieces or other metal inserts. 10, these webs 63 and 64 each have extensions 65 and 66, which extend along the coil flange 67 in the radial direction. This enables angled inserts to be insulated up to the outer diameter of the coil flange.

Claims (11)

1. Spulenkörper aus Isolierstoff mit an beiden Enden angeformten Flanschen sowie mit einer Kernbohrung zur Aufnahme eines axial angeordneten, sich über die Spulenflansche hinaus erstreckenden Eisenkerns, dadurch gekennzeichnet , daß der einteilige Spulenkörper (1) im Bereich der Kernbohrung (6) eine angeformte Längsrippe (7) besitzt, in deren Verlängerung zumindest ein Spulenflansch (4) Wickelstützpunkte (9, 10) trägt.1. Coil body made of insulating material with flanges formed on both ends and with a core hole for receiving an axially arranged iron core which extends beyond the coil flanges, characterized in that the one-piece coil body (1) in the area of the core hole (6) has a molded longitudinal rib ( 7), in the extension of which at least one coil flange (4) carries winding support points (9, 10). 2. Spulenkörper nach Anspruch 1, dadurch gekennzeichnet , daß die Wickelstützpunkte (9, 10) an einem rippenförmigen Fortsatz (8) der Längsrippe (7) angeordnet sind.2. Bobbin according to claim 1, characterized in that the winding support points (9, 10) on a rib-shaped extension (8) of the longitudinal rib (7) are arranged. 3. Spulenkörper nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß an dem Fortsatz (8) . zwei hakenförmige, gegeneinander versetzte Wickelstüzpunkte (9, 10) einstückig angeformt sind.' 3. Bobbin according to claim 1 or 2, characterized in that on the extension (8). two hook-shaped, mutually offset winding support points (9, 10) are integrally formed. ' 4. Spulenkörper nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Wickelstützpunkte (9, 10) in Radialrichtung der Spule gegeneinander versetzt angeordnet sind.4. Bobbin according to one of claims 1 to 3, characterized in that the winding support points (9, 10) are arranged offset from one another in the radial direction of the coil. 5. Spulenkörper nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet , daß die Wickelstützpunkte (9, 10) mit ihren jeweiligen Wickelachsen gegenüber der Stirnfläche des Spulenflansches (4) um einen derartigen Winkel (α, β) gegeneinander geneigt angeordnet sind, daß durch die Schlingbewegung der Wicklungsenden (11, 14) auf jeweils einem Wickelstützpunkt der jeweilige andere Wickelstützpunkt nicht berührt wird.5. Bobbin according to one of claims 1 to 4, characterized in that the winding support points (9, 10) with their respective winding axes relative to the end face of the coil flange (4) are arranged inclined at such an angle (α, β) that by the looping movement of the winding ends (11, 14) on each winding base does not touch the other winding base. 6. Spulenkörper nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet , daß die Wickelstützpunkte (9, 10) jeweils an einer Seite zur Aufnahme und formschlüssigen Fixierung der Wicklungsenden mit einer Nut (15) versehen sind.6. Bobbin according to one of claims 3 to 5, characterized in that the winding support points (9, 10) are each provided on one side for receiving and positively fixing the winding ends with a groove (15). 7. Spulenkörper nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet , daß der die Wickelstützpunkte (9, 10) tragende Spulenflansch (4) neben den Wickelstützpunkten einen axialen Schlitz (12) aufweist.7. bobbin according to one of claims 1 to 6, characterized in that the winding support points (9, 10) carrying coil flange (4) in addition to the winding support points has an axial slot (12). 8. Spulenkörper nach einem der Ansprüche 1, 2 oder 4, dadurch gekennzeichnet , daß in der Längsrippe (42) bzw. dem Fortsatz (54) Wickelstützpunkte in Form von Drähten (44, 45, 55, 56) eingebettet sind.8. coil former according to one of claims 1, 2 or 4, characterized in that in the longitudinal rib (42) or the extension (54) winding support points in the form of wires (44, 45, 55, 56) are embedded. 9. Spulenkörper nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet , daß in der Längsrippe (32) Metalleinlagen eingebettet sind.9. coil former according to one of claims 1 to 8, characterized in that in the longitudinal rib (32) metal inserts are embedded. 10. Spulenkörper nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet , daß die Längsrippe (32, 62) Kammern zur Aufnahme von Einlegeteilen aufweist.10. Bobbin according to one of claims 1 to 9, characterized in that the longitudinal rib (32, 62) has chambers for receiving inserts. 11. Transformatorspule unter Verwendung eines Spulenkörpers nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet , daß im Spulenkörper (1) ein zweiteiliger, der Länge nach geschlitzter Kern (16, 17) mit an den Enden jeweils angeformten Eisenflanschen (19, 20) angeordnet ist, wobei die Längsrippe (7) und die an einem Spulenflansch angeordneten Wickelstützpunkte (9, 10) im Längsschlitz des Kerns liegen.11. Transformer coil using a coil body according to one of claims 1 to 10, characterized in that in the coil body (1) a two-part, the lengthwise slotted core (16, 17) with iron flanges (19, 20) formed on the ends The longitudinal rib (7) and the winding support points (9, 10) arranged on a coil flange lie in the longitudinal slot of the core.
EP82106040A 1981-07-10 1982-07-06 Transformer coil Expired EP0069973B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3127341 1981-07-10
DE3127341A DE3127341C2 (en) 1981-07-10 1981-07-10 Transformer coil

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EP0069973A1 true EP0069973A1 (en) 1983-01-19
EP0069973B1 EP0069973B1 (en) 1985-11-13

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EP82106040A Expired EP0069973B1 (en) 1981-07-10 1982-07-06 Transformer coil

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DE (2) DE3127341C2 (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
WO1993000690A1 (en) * 1991-06-21 1993-01-07 Motorola Lighting, Inc. Bobbin for electrical windings
CN111344829A (en) * 2017-11-21 2020-06-26 三菱电机株式会社 Electromagnetic switch device for starter

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DE2236241A1 (en) * 1972-07-24 1974-02-07 Siemens Ag REEL BODY
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US4166265A (en) * 1978-02-03 1979-08-28 Amp Incorporated Coil bobbins and termination of coil windings

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DE1539679B2 (en) * 1966-03-25 1973-09-13 Blaupunkt-Werke Gmbh, 3200 Hildesheim Plastic bobbins
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DE1790110B2 (en) * 1968-09-12 1974-10-10 Siemens Ag, 1000 Berlin Und 8000 Muenchen Arrangement for holding connection lugs for plug connections on plastic parts of electrical devices
DE1919729A1 (en) * 1969-04-18 1970-11-05 Rau Swf Autozubehoer Coil body for relay, warning buzzer or the like.
DE2208457A1 (en) * 1972-02-23 1973-08-30 Loewe Opta Gmbh REEL FOR TRANSFORMERS
DE2236241A1 (en) * 1972-07-24 1974-02-07 Siemens Ag REEL BODY
DE2717081A1 (en) * 1977-04-18 1978-11-09 Bbc Brown Boveri & Cie REEL BODY
US4166265A (en) * 1978-02-03 1979-08-28 Amp Incorporated Coil bobbins and termination of coil windings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993000690A1 (en) * 1991-06-21 1993-01-07 Motorola Lighting, Inc. Bobbin for electrical windings
CN111344829A (en) * 2017-11-21 2020-06-26 三菱电机株式会社 Electromagnetic switch device for starter

Also Published As

Publication number Publication date
DE3127341C2 (en) 1983-12-08
EP0069973B1 (en) 1985-11-13
DE3267408D1 (en) 1985-12-19
DE3127341A1 (en) 1983-01-27

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