EP0562469A1 - Low power capacity transformer insulated for direct contact - Google Patents

Low power capacity transformer insulated for direct contact Download PDF

Info

Publication number
EP0562469A1
EP0562469A1 EP93104501A EP93104501A EP0562469A1 EP 0562469 A1 EP0562469 A1 EP 0562469A1 EP 93104501 A EP93104501 A EP 93104501A EP 93104501 A EP93104501 A EP 93104501A EP 0562469 A1 EP0562469 A1 EP 0562469A1
Authority
EP
European Patent Office
Prior art keywords
housing
laminated core
power transformer
transformer
low
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.)
Granted
Application number
EP93104501A
Other languages
German (de)
French (fr)
Other versions
EP0562469B1 (en
Inventor
Peter Horn
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.)
Knobel AG Lichttechnische Komponenten
Original Assignee
Knobel AG Lichttechnische Komponenten
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 Knobel AG Lichttechnische Komponenten filed Critical Knobel AG Lichttechnische Komponenten
Publication of EP0562469A1 publication Critical patent/EP0562469A1/en
Application granted granted Critical
Publication of EP0562469B1 publication Critical patent/EP0562469B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/02—Casings
    • H01F27/025—Constructional details relating to cooling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/085—Cooling by ambient air

Definitions

  • the invention relates to a low-power transformer insulated against contact with a plastic housing.
  • the invention has for its object to provide a low-power transformer insulated against contact, which does not have the disadvantages mentioned.
  • the transformer should be inexpensive to manufacture and the heat generated during operation should be easy to dissipate.
  • the housing preferably consists of two sleeves, which are each pushed onto the transformer from the opposite side and which snap onto the base plate of the transformer. At the point at which the two sleeves lie opposite one another, a third housing part is provided which covers the separation point. This arrangement results in a particularly simple assembly. Furthermore, with the same sleeve parts, transformers of different lengths can be provided with a housing, in that only the middle part has to be made more or less wide.
  • FIG. 1 shows a small power transformer uncut and its housing in vertical longitudinal section.
  • the laminated core 1 of the transformer can be seen, which is arranged on a base plate 4.
  • the bottom plate 4 engages on both sides in lateral grooves of the laminated core 1 and holds it together.
  • the two end windings of the coils emerging from the sheet metal package are covered on one side with an end cap 2 and on the other end side with one Connection cap 3, which carries the connection terminals of the transformer.
  • the housing of the transformer consists of a first sleeve 5 made of plastic and a second sleeve 6 made of plastic, which are pushed onto the laminated core 1 from the two end faces thereof.
  • the sleeves are preferably fixed to the base plate 4, as will be shown below. Between the two sleeves 5, 6, a middle housing part 7 is provided, which overlaps both sleeves.
  • a cover 8 is provided on the sleeve 5 so that there is access to the connection terminals of the transformer.
  • Figure 2 shows a vertical longitudinal section through the sleeve 6, which is provided on the outside with a plurality of cooling fins 10, which enlarge the surface of the sleeve 6 in order to dissipate the heat generated by the transformer to the environment.
  • the lower inner surface of the sleeve 6 is provided with a projection 11 which engages in a corresponding recess in the base plate 4. This enables a particularly simple assembly of the housing on the laminated core 1 and the base plate 4 by pushing the sleeve 6 onto the laminated core with the base plate from the end face until the projection 11 engages in the corresponding recess in the base plate.
  • a fastening foot 12 can also be provided on the sleeve for fastening the transformer at its place of use.
  • Figure 3 shows a vertical cross section through the sleeve 6 along the line AA of Figure 2. Only one half of the sleeve is shown.
  • the outline of the laminated core 1 and the base plate 4 is also partially drawn. It can be seen from this that the inner surface of the plastic housing lies flat against the laminated core so that there is good heat transfer from the laminated core to the plastic housing.
  • the plastic housing is preferably made minimally smaller than the outline of the laminated core with the base plate 4. This results in a slight expansion of the sleeve when inserting the laminated core or resilient contact of the housing inner surfaces on the laminated core, ie a good contact to enable the heat flow.
  • the corner regions 13 and 14 of the housing are accordingly designed such that there is a resilient loading of the laminated core with the base plate through the housing inner surfaces 15, 16 and 17.
  • FIG. 4 shows a vertical longitudinal section through a section of the sleeve 5.
  • the projection 11, which is intended to be latched onto the base plate, can also be seen.
  • the cover 8 is shown, which gives access to the connection terminals of the transformer.
  • This cover 8 is preferably made in one piece with the sleeve 5 and connected to the sleeve by a plastic hinge.
  • the cover 8 can be designed such that it engages when it is closed on the fixed housing and can only be opened again by means of a tool.
  • the cover preferably also serves as strain relief for the cables to be connected.
  • plastics for the housing different types of plastic come into consideration as plastics for the housing. Plastics which have good thermal conductivity are preferred.
  • the polyamide material PA 6 is particularly suitable.

Abstract

The transformer is insulated by means of a plastic housing (6) against being touched. The inner surfaces (15, 16 and 17) of the housing rest on the laminate stack (1) and the baseplate (4) of the transformer in order to produce good heat transmission from the laminate stack to the housing. The housing is provided with cooling ribs (10) on its outside, in order to dissipate the heat. The housing makes it possible to assemble the transformer quickly and easily, and produces good heat dissipation. <IMAGE>

Description

Die Erfindung betrifft einen gegen Berührung isolierten Kleinleistungstransformator mit einem Kunststoff-Gehäuse.The invention relates to a low-power transformer insulated against contact with a plastic housing.

Es ist bekannt, Kleinleistungstransformatoren, welche berührungssicher nach Klasse 2 isoliert werden müssen, in Kunststoff einzugiessen. Es ist auch bekannt, solche Transformatoren in einem Kunststoff-Gehäuse anzuordnen und die Zwischenräume zwischen Gehäuse und Transformator mit einer Vergussmasse aufzufüllen. Problematisch bei den genannten Transformatoren ist die Abfuhr der im Betrieb vom Transformator erzeugten Wärme. Ferner ist die Herstellung durch die Vergiessoperation relativ aufwendig und teuer.It is known to cast low-power transformers, which must be insulated in a class 2 manner, in plastic. It is also known to arrange such transformers in a plastic housing and to fill the spaces between the housing and the transformer with a casting compound. The problem with the transformers mentioned is the removal of the heat generated by the transformer during operation. Furthermore, the production by the casting operation is relatively complex and expensive.

Der Erfindung liegt die Aufgabe zugrunde, einen gegen Berührung isolierten Kleinleistungstransformator zu schaffen, der die erwähnten Nachteile nicht aufweist. Insbesondere soll der Transformator kostengünstig herstellbar sein und die im Betrieb erzeugte Wärme soll gut abführbar sein.The invention has for its object to provide a low-power transformer insulated against contact, which does not have the disadvantages mentioned. In particular, the transformer should be inexpensive to manufacture and the heat generated during operation should be easy to dissipate.

Dies wird bei einem Kleinleistungstransformator der eingangs genannten Art dadurch erreicht, dass das Kunststoff-Gehäuse am Blechpaket des Transformators flächig anliegt und an seiner Aussenseite mit Ausformungen versehen ist, um die beim Betrieb des Transformators entstehende Wärme an die Umgebung abzuführen.This is achieved in a low-power transformer of the type mentioned at the outset in that the plastic housing lies flat against the laminated core of the transformer and is provided on the outside with formations in order to dissipate the heat generated during operation of the transformer to the environment.

Dadurch, dass das Kunststoff-Gehäuse am Blechpaket des Transformators direkt anliegt, ergibt sich ein sehr guter Wärmeübergang vom Blechpaket auf das Kunststoff-Gehäuse. Da dieses an seiner Aussenseite die Oberfläche vergrössernde Ausformungen aufweist, kann die Wärme gut an die Umgebung abgegeben werden. Da das Kunststoff-Gehäuse direkt am Blechpaket anliegt, wird keine Vergussmasse benötigt und der entsprechende teure Arbeitsschritt entfällt. Dadurch wird auch die Montage des Gehäuses am Transformator besonders einfach.The fact that the plastic housing lies directly on the laminated core of the transformer results in very good heat transfer from the laminated core to the plastic housing. Since this has formations that enlarge the surface on its outside, the heat can be given off well to the surroundings. Since the plastic housing lies directly on the laminated core, no potting compound is required and the corresponding expensive work step not applicable. This also makes mounting the housing on the transformer particularly easy.

Vorzugsweise besteht das Gehäuse aus zwei Hülsen, welche jeweils von entgegengesetzter Seite auf den Transformator aufgeschoben werden und welche an der Bodenplatte des Transformators einschnappen. An der Stelle, an welcher sich die beiden Hülsen gegenüberliegen, wird ein dritter Gehäuseteil vorgesehen, welcher die Trennstelle überdeckt. Diese Anordnung ergibt eine besonders einfache Montage. Ferner lassen sich mit den gleichen Hülsenteilen verschieden lange Transformatoren mit einem Gehäuse versehen, indem nur der mittlere Teil mehr oder weniger breit ausgeführt werden muss.The housing preferably consists of two sleeves, which are each pushed onto the transformer from the opposite side and which snap onto the base plate of the transformer. At the point at which the two sleeves lie opposite one another, a third housing part is provided which covers the separation point. This arrangement results in a particularly simple assembly. Furthermore, with the same sleeve parts, transformers of different lengths can be provided with a housing, in that only the middle part has to be made more or less wide.

Im folgenden werden Ausführungsbeispiele der Erfindung anhand der Zeichnungen näher erläutert. Dabei zeigt

  • Figur 1 schematisch einen Vertikal-Längsschnitt durch ein Gehäuse mit darin angeordnetem Transformator;
  • Figur 2 einen Vertikal-Längsschnitt durch ein hülsenförmiges Gehäuseteil;
  • Figur 3 einen Vertikal-Querschnitt durch das Hülsenteil von Figur 2, wobei nur eine Hälfte dargestellt ist und die Umrisse des Blechpaketes mit der Bodenplatte eingezeichnet sind; und
  • Figur 4 einen Vertikal-Längsschnitt durch ein zweites Hülsenteil des Gehäuses.
Exemplary embodiments of the invention are explained in more detail below with reference to the drawings. It shows
  • Figure 1 schematically shows a vertical longitudinal section through a housing with a transformer arranged therein;
  • 2 shows a vertical longitudinal section through a sleeve-shaped housing part;
  • 3 shows a vertical cross section through the sleeve part of FIG. 2, only one half being shown and the outlines of the laminated core being drawn in with the base plate; and
  • 4 shows a vertical longitudinal section through a second sleeve part of the housing.

Die schematische Darstellung von Figur 1 zeigt einen Kleinleistungstransformator ungeschnitten und dessen Gehäuse in Vertikal-Längsschnitt. Dabei ist das Blechpaket 1 des Transformators ersichtlich, welches an einer Bodenplatte 4 angeordnet ist. Die Bodenplatte 4 greift beidseitig in seitliche Nuten des Blechpaketes 1 ein und hält dieses zusammen. Die beiden aus dem Blechpaket stirnseitig austretenden Wickelköpfe der Spulen sind auf der einen Seite mit einer Endkappe 2 abgedeckt und auf der anderen Stirnseite mit einer Anschlusskappe 3, welche die Anschlussklemmen des Transformators trägt. Das Gehäuse des Transformators besteht aus einer ersten Hülse 5 aus Kunststoff und einer zweiten Hülse 6 aus Kunststoff, welche von den beiden Stirnseiten des Blechpaketes 1 her auf dieses aufgeschoben sind. Die Fixierung der Hülsen erfolgt dabei vorzugsweise an der Bodenplatte 4, wie nachfolgend noch gezeigt wird. Zwischen den beiden Hülsen 5, 6 ist ein mittleres Gehäuseteil 7 vorgesehen, welches beide Hülsen übergreift. An der Hülse 5 ist ein Deckel 8 vorgesehen, damit Zugriff zu den Anschlussklemmen des Transformators besteht.The schematic representation of Figure 1 shows a small power transformer uncut and its housing in vertical longitudinal section. The laminated core 1 of the transformer can be seen, which is arranged on a base plate 4. The bottom plate 4 engages on both sides in lateral grooves of the laminated core 1 and holds it together. The two end windings of the coils emerging from the sheet metal package are covered on one side with an end cap 2 and on the other end side with one Connection cap 3, which carries the connection terminals of the transformer. The housing of the transformer consists of a first sleeve 5 made of plastic and a second sleeve 6 made of plastic, which are pushed onto the laminated core 1 from the two end faces thereof. The sleeves are preferably fixed to the base plate 4, as will be shown below. Between the two sleeves 5, 6, a middle housing part 7 is provided, which overlaps both sleeves. A cover 8 is provided on the sleeve 5 so that there is access to the connection terminals of the transformer.

Figur 2 zeigt einen Vertikal-Längsschnitt durch die Hülse 6, die an ihrer Aussenseite mit einer Vielzahl von Kühlrippen 10 versehen ist, welche die Oberfläche der Hülse 6 vergrössern, um die vom Transformator erzeugte Wärme an die Umgebung abzuführen. Die untere Innenfläche der Hülse 6 ist mit einem Vorsprung 11 versehen, welcher in eine entsprechende Ausnehmung der Bodenplatte 4 eingreift. Dies ermöglicht eine besonders einfache Montage des Gehäuses am Blechpaket 1 und der Bodenplatte 4, indem die Hülse 6 von der Stirnseite her auf das Blechpaket mit der Bodenplatte aufgeschoben wird, bis der Vorsprung 11 in der entsprechenden Ausnehmung der Bodenplatte einrastet. An der Hülse kann ferner ein Befestigungsfuss 12 zur Befestigung des Transformators an seinem Einsatzort vorgesehen sein.Figure 2 shows a vertical longitudinal section through the sleeve 6, which is provided on the outside with a plurality of cooling fins 10, which enlarge the surface of the sleeve 6 in order to dissipate the heat generated by the transformer to the environment. The lower inner surface of the sleeve 6 is provided with a projection 11 which engages in a corresponding recess in the base plate 4. This enables a particularly simple assembly of the housing on the laminated core 1 and the base plate 4 by pushing the sleeve 6 onto the laminated core with the base plate from the end face until the projection 11 engages in the corresponding recess in the base plate. A fastening foot 12 can also be provided on the sleeve for fastening the transformer at its place of use.

Figur 3 zeigt einen Vertikal-Querschnitt durch die Hülse 6 entlang der Linie A-A von Figur 2. Dabei ist nur die eine Hälfte der Hülse dargestellt. In der Figur 3 ist ferner der Umriss des Blechpaketes 1 und der Bodenplatte 4 teilweise eingezeichnet. Daraus ist ersichtlich, dass das Kunststoff-Gehäuse mit seinen Innenflächen flächig am Blechpaket anliegt, damit ein guter Wärmeübergang vom Blechpaket auf das Kunststoff-Gehäuse erfolgt. Das Kunststoff-Gehäuse ist dabei vorzugsweise minim kleiner ausgeführt als der Umriss des Blechpaketes mit der Bodenplatte 4. Dadurch ergibt sich ein geringfügiges Aufweiten der Hülse beim Einschieben des Blechpaketes bzw. federndes Anliegen der Gehäuseinnenflächen am Blechpaket, d.h. ein guter Kontakt zur Ermöglichung des Wärmeflusses. Die Eckbereiche 13 und 14 des Gehäuses sind dementsprechend so ausgestaltet, dass sich eine federnde Beaufschlagung des Blechpaketes mit der Bodenplatte durch die Gehäuseinnenflächen 15, 16 und 17 ergibt.Figure 3 shows a vertical cross section through the sleeve 6 along the line AA of Figure 2. Only one half of the sleeve is shown. In Figure 3, the outline of the laminated core 1 and the base plate 4 is also partially drawn. It can be seen from this that the inner surface of the plastic housing lies flat against the laminated core so that there is good heat transfer from the laminated core to the plastic housing. The plastic housing is preferably made minimally smaller than the outline of the laminated core with the base plate 4. This results in a slight expansion of the sleeve when inserting the laminated core or resilient contact of the housing inner surfaces on the laminated core, ie a good contact to enable the heat flow. The corner regions 13 and 14 of the housing are accordingly designed such that there is a resilient loading of the laminated core with the base plate through the housing inner surfaces 15, 16 and 17.

Figur 4 zeigt einen Vertikal-Längsschnitt durch einen Abschnitt der Hülse 5. Dabei ist ebenfalls der Vorsprung 11 ersichtlich, welcher zur Einrastung an der Bodenplatte bestimmt ist. Ferner ist der Deckel 8 gezeigt, welcher Zugang zu den Anschlussklemmen des Transformators ergibt. Vorzugsweise ist dieser Deckel 8 einstückig mit der Hülse 5 ausgeführt und durch ein Kunststoff-Scharnier mit der Hülse verbunden. Der Deckel 8 kann so ausgeführt sein, dass er beim Schliessen am feststehenden Gehäuse einrastet und nur mittels Werkzeug erneut geöffnet werden kann. Vorzugsweise dient der Deckel gleichzeitig als Zugentlastung für die anzuschliessenden Kabel.FIG. 4 shows a vertical longitudinal section through a section of the sleeve 5. The projection 11, which is intended to be latched onto the base plate, can also be seen. Furthermore, the cover 8 is shown, which gives access to the connection terminals of the transformer. This cover 8 is preferably made in one piece with the sleeve 5 and connected to the sleeve by a plastic hinge. The cover 8 can be designed such that it engages when it is closed on the fixed housing and can only be opened again by means of a tool. The cover preferably also serves as strain relief for the cables to be connected.

Als Kunststoffe für das Gehäuse kommen prinzipiell verschiedene Kunststoffarten in Betracht. Bevorzugt werden Kunststoffe, welche eine gute Wärmeleitfähigkeit aufweisen. Insbesondere geeignet ist der Polyamid-Werkstoff PA 6.In principle, different types of plastic come into consideration as plastics for the housing. Plastics which have good thermal conductivity are preferred. The polyamide material PA 6 is particularly suitable.

Claims (6)

Gegen Berührung isolierter Kleinleistungstransformator mit einem Kunststoff-Gehäuse, dadurch gekennzeichnet, dass das Kunststoff-Gehäuse (5,6) am Blechpaket (1,4) des Transformators flächig anliegt und an seiner Aussenseite mit Ausformungen (10) versehen ist, um die beim Betrieb des Transformators entstehende Wärme an die Umgebung abzuführen.Small-power transformer insulated against contact with a plastic housing, characterized in that the plastic housing (5, 6) lies flat against the laminated core (1, 4) of the transformer and is provided on the outside with moldings (10) to accommodate the operation dissipate the heat generated by the transformer to the environment. Kleinleistungstransformator nach Anspruch 1, dadurch gekennzeichnet, dass das Gehäuse derart ausgestaltet ist, dass mindestens eine Gehäuseinnenwand das Blechpaket federnd beaufschlagt.Low-power transformer according to claim 1, characterized in that the housing is configured such that at least one inner wall of the housing resiliently acts on the laminated core. Kleinleistungstransformator nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Ausformungen als in Gehäuselängsrichtung verlaufende Rippen (10) ausgestaltet sind.Low-power transformer according to claim 1 or 2, characterized in that the formations are designed as ribs (10) extending in the longitudinal direction of the housing. Kleinleistungstransformator nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Gehäuse zwei auf das Blechpaket aufgeschobene Hülsenteile (5,6) und einen zwischen den Hülsenteilen angeordneten Mittelteil (7) umfasst.Low-power transformer according to one of Claims 1 to 3, characterized in that the housing comprises two sleeve parts (5, 6) pushed onto the laminated core and a middle part (7) arranged between the sleeve parts. Kleinleistungstransformator nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass am Blechpaket (1) eine das Blechpaket zusammenhaltende Bodenplatte (4) angeordnet ist, und dass das Gehäuse innen Ausformungen (11) aufweist, welche in Ausnehmungen der Bodenplatte eingreifen.Low-power transformer according to one of Claims 1 to 4, characterized in that a base plate (4) holding the plate package together is arranged on the laminated core (1), and in that the housing has internal formations (11) which engage in recesses in the base plate. Kleinleistungstransformator nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Gehäuse mindestens einen Scharnierteil und Deckelteil (8) umfasst, der eine verschliessbare Gehäuseöffnung und die Zugentlastung für anzuschliessende Kabel bildet.Low-power transformer according to one of claims 1 to 5, characterized in that the housing comprises at least one hinge part and cover part (8) which forms a closable housing opening and the strain relief for cables to be connected.
EP93104501A 1992-03-26 1993-03-19 Low power capacity transformer insulated for direct contact Expired - Lifetime EP0562469B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH958/92 1992-03-26
CH958/92A CH683214A5 (en) 1992-03-26 1992-03-26 Counter contact isolated small power transformer.

Publications (2)

Publication Number Publication Date
EP0562469A1 true EP0562469A1 (en) 1993-09-29
EP0562469B1 EP0562469B1 (en) 1996-10-09

Family

ID=4199136

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93104501A Expired - Lifetime EP0562469B1 (en) 1992-03-26 1993-03-19 Low power capacity transformer insulated for direct contact

Country Status (5)

Country Link
EP (1) EP0562469B1 (en)
AT (1) ATE144070T1 (en)
CH (1) CH683214A5 (en)
DE (1) DE59304070D1 (en)
ES (1) ES2093300T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6185811B1 (en) * 1994-08-01 2001-02-13 Hammond Manufacturing Company Method for making a transformer
EP1528577A1 (en) * 2003-10-30 2005-05-04 Vossloh-Schwabe Deutschland GmbH Supply unit for lighting device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2275398B1 (en) * 2005-04-18 2008-04-01 Polylux, S.L. SMALL POWER CAPACITY TRANSFORMER AND ITS CORRESPONDING MANUFACTURING PROCEDURE.

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2947957A (en) * 1957-04-22 1960-08-02 Zenith Radio Corp Transformers
US3387244A (en) * 1966-05-03 1968-06-04 Hermetic Coil Co Inc Transformer having winding leads held in pressure contact with terminals
CH515592A (en) * 1970-02-05 1971-11-15 Zumtobel Walter Transformer or induction coil
GB1268768A (en) * 1968-07-18 1972-03-29 South Wales Switchgear Housing tanks for transformers
FR2221899A1 (en) * 1973-03-17 1974-10-11 Frater Sae
EP0081842A2 (en) * 1981-12-16 1983-06-22 May &amp; Christe GmbH Transformatorenwerke Inductance or transformer
FR2595415A3 (en) * 1986-03-06 1987-09-11 Ducellier & Cie Magnetic circuit accommodated in the ignition coil casing for an internal combustion engine
EP0254132A1 (en) * 1986-07-15 1988-01-27 Oy Helvar Apparatus in a ballast or transformer for improving its cooling

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2947957A (en) * 1957-04-22 1960-08-02 Zenith Radio Corp Transformers
US3387244A (en) * 1966-05-03 1968-06-04 Hermetic Coil Co Inc Transformer having winding leads held in pressure contact with terminals
GB1268768A (en) * 1968-07-18 1972-03-29 South Wales Switchgear Housing tanks for transformers
CH515592A (en) * 1970-02-05 1971-11-15 Zumtobel Walter Transformer or induction coil
FR2221899A1 (en) * 1973-03-17 1974-10-11 Frater Sae
EP0081842A2 (en) * 1981-12-16 1983-06-22 May &amp; Christe GmbH Transformatorenwerke Inductance or transformer
FR2595415A3 (en) * 1986-03-06 1987-09-11 Ducellier & Cie Magnetic circuit accommodated in the ignition coil casing for an internal combustion engine
EP0254132A1 (en) * 1986-07-15 1988-01-27 Oy Helvar Apparatus in a ballast or transformer for improving its cooling

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 5, no. 7 (E-41)(679) 17. Januar 1981 & JP-A-55 138 818 ( MATSUSHITA ) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6185811B1 (en) * 1994-08-01 2001-02-13 Hammond Manufacturing Company Method for making a transformer
EP1528577A1 (en) * 2003-10-30 2005-05-04 Vossloh-Schwabe Deutschland GmbH Supply unit for lighting device

Also Published As

Publication number Publication date
ATE144070T1 (en) 1996-10-15
EP0562469B1 (en) 1996-10-09
ES2093300T3 (en) 1996-12-16
DE59304070D1 (en) 1996-11-14
CH683214A5 (en) 1994-01-31

Similar Documents

Publication Publication Date Title
EP1774544B1 (en) Holder for a choke and an inductive element comprising the holder
EP0927510B1 (en) Heat-conducting housing to accommodate electrical or electronic components
DE69723461T2 (en) Housing for electronic connection to a computer equipped with an IC card connector
DE69929636T2 (en) Housing for electronic component
DE102006034777A1 (en) Combination of an inverter housing and a component acting as a heat sink
DE60118046T2 (en) Mounting arrangement for mounting power elements on a heat sink
DE112014001321T5 (en) Electronic component assembly structure and electrical connection box
DE3611658A1 (en) ELECTRONIC COMPONENT ASSEMBLY
DE2328505A1 (en) ELECTRICAL CONNECTOR FOR THE CONDUCTIVE CORES OF INSULATED WIRES
EP0793243A1 (en) Transformer
EP0562469B1 (en) Low power capacity transformer insulated for direct contact
DE3625661A1 (en) ELECTRIC MOTOR
DE10161593B4 (en) Flat semiconductor stack
EP1632042B1 (en) Device for absorbing noise
EP1597951B1 (en) Electronic device comprising secure heat dissipation
EP1689078B1 (en) Device for absorbing electric noise
EP0489341A1 (en) Casing for electric circuits
EP0410119A2 (en) Temperature switch with bimetallic switch mechanism
EP1636809B1 (en) Inductive miniature component for smd assembly
DE10006667B4 (en) breakers
DE4231827C2 (en) Clamping device for clamping the circuit board edges of an electronic module in the side guide grooves of a housing
DE112018002513T5 (en) Electrical distribution box
DE3123794A1 (en) Light barrier having a flat, essentially monolithic housing
EP0471199A1 (en) Connection box for electrical conductors
DE102008013024A1 (en) Supply unit for supplying current to high pressure discharge lamp, has printed circuit board having bushing contacts, which are suspended on plug connections in joining direction and inserted into housing part in joining direction

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): AT CH DE ES FR GB IT LI

17P Request for examination filed

Effective date: 19940325

17Q First examination report despatched

Effective date: 19940819

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE ES FR GB IT LI

REF Corresponds to:

Ref document number: 144070

Country of ref document: AT

Date of ref document: 19961015

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: E. BLUM & CO. PATENTANWAELTE

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19961015

REF Corresponds to:

Ref document number: 59304070

Country of ref document: DE

Date of ref document: 19961114

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2093300

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: MARCHI & PARTNERS S.R.L.

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: KNOBEL AG LICHTTECHNISCHE KOMPONENTEN

Free format text: KNOBEL AG LICHTTECHNISCHE KOMPONENTEN# #CH-8755 ENNENDA (CH) -TRANSFER TO- KNOBEL AG LICHTTECHNISCHE KOMPONENTEN# #CH-8755 ENNENDA (CH)

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20090317

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20090212

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20090325

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20090312

Year of fee payment: 17

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100319

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20101130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100331

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100319

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20120531

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20120402

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20120427

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59304070

Country of ref document: DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20130318

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20130320

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20130318

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20130802

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20130320