EP0134390B1 - Lead-through insulators, especially for refrigerating machines - Google Patents

Lead-through insulators, especially for refrigerating machines Download PDF

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Publication number
EP0134390B1
EP0134390B1 EP84103204A EP84103204A EP0134390B1 EP 0134390 B1 EP0134390 B1 EP 0134390B1 EP 84103204 A EP84103204 A EP 84103204A EP 84103204 A EP84103204 A EP 84103204A EP 0134390 B1 EP0134390 B1 EP 0134390B1
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EP
European Patent Office
Prior art keywords
nub
cylindrical
insulator
current
current leadthrough
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84103204A
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German (de)
French (fr)
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EP0134390A1 (en
Inventor
Georg Dipl.-Ing. Probst (Fh)
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GMT NOVOTNY GmbH
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GMT NOVOTNY GmbH
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Publication date
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Priority to AT84103204T priority Critical patent/ATE27871T1/en
Publication of EP0134390A1 publication Critical patent/EP0134390A1/en
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Publication of EP0134390B1 publication Critical patent/EP0134390B1/en
Expired legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/26—Lead-in insulators; Lead-through insulators
    • H01B17/30—Sealing
    • H01B17/303—Sealing of leads to lead-through insulators
    • H01B17/306—Sealing of leads to lead-through insulators by embedding in material other than glass or ceramics
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/10—Connectors or connections adapted for particular applications for dynamoelectric machines

Definitions

  • the invention relates to a current feedthrough, in particular for refrigeration machines, with a disk-like insulating body made of at least slightly elastic material, in particular elastomers, thermoplastics or the like, from which a knob which is penetrated by electrically conductive elements and tapers towards the end is formed.
  • Such a feedthrough is disclosed in DE-A-1 464 203: the knob protruding from the disk-like insulating body is inserted into a counterpart of another disk-like insulating body.
  • This counterpart is a pipe stub with a tapering interior and an annular bead protruding into it, which keeps engaging in an annular groove on the outside of that knob.
  • the result is a cross-sectionally H-shaped insulating body made of elastically stable insulating material with a through channel for an electrical conductor.
  • the conductor pins are locked in their position by means of this seal and are sealed airtight by the seal cast into the desired shape on the spot.
  • the two-part construction of the current lead-through is very complex both during manufacture and during assembly.
  • the connection between the current feedthrough on the one hand and the conductor passing through it on the other hand is not sufficiently reliable.
  • the inventor has set himself the task of simplifying the manufacture and assembly of a current feedthrough of the type mentioned at the outset, reducing the cost and at the same time increasing the operational reliability.
  • the insulating body consists of a base which carries a plurality of eccentrically provided knobs and is reinforced by means of a flange projecting radially from a cylindrical knob part and which is formed in one piece from temperature-resistant, chemical-insensitive material, in particular injection-molded, the facing the knobs Surface of the base or flange, a contact edge and the outer surface of each element designed as a conductor pin is connected gas-tight to the knob surrounding it.
  • a particular advantage is the one-piece construction of the support and the insulating body, that is to say of the base and the knobs, which has a considerable influence on both the manufacture and the handling.
  • the conical knob section facilitates insertion into the bores of the compressor wall or the like, whereas the cylindrical part ensures a perfect seal.
  • an approximately radially projecting annular bead is provided at the transition between the conical part of the knob and the cylindrical knob part.
  • the wall of the compressor capsule lies on the knobs between the base and this bead, the latter on the one hand indicating the correct installation of the current feedthrough and on the other hand serving as resistance to its being pushed out of the capsule.
  • cylindrical knob part is encompassed by an annular bead which is directed parallel to the knob and protrudes from the surface of the base.
  • This ring bead serves as a system for the capsule wall and for sealing the same.
  • the conductor pin penetrates a cylindrical blind hole in the insulating body, which extends from a lower surface of the base to approximately the end of the cylindrical knob part stretches.
  • This blind hole surrounds the conductor pin in a ring shape in cross-section and makes it possible to simplify the assembly of the current lead-through; the latter can be compressed when inserted into a bore in the capsule wall or the like.
  • a disk-shaped base 10 of a current feedthrough 11 is provided on a surface 12 with three knobs 14 formed from it, in each of which an electrically conductive pin 15 is embedded centrally.
  • Base 10 and knobs 14 are injection-molded in one piece from electrically non-conductive elastomer or thermoplastics.
  • the freely protruding pin ends 16 can be designed with or without an upset contact surface, depending on the electrical power to be transmitted.
  • the knobs 14 each have a conical part 19 extending from their forehead 18, which is used for centering when the current feedthrough 11 is buttoned into a capsule (not shown) of a compressor.
  • a cylindrical knob part 20 adjoining the conical part 19 is to a certain extent larger than the associated bore of the capsule, which is also not shown, and represents the actual sealing element of the entire current feedthrough 11.
  • annular bead 21 is arranged, against which the wall of the capsule, not shown, bears after assembly.
  • This bead 21 indicates the correct mounting position of the current leadthrough 11 and also serves as a stop for the capsule of the compressor in order to prevent the current leadthrough 11 from sliding out unintentionally.
  • the disk-shaped base 10 is reinforced by a flange 23 projecting laterally from the cylindrical knob parts 20, as illustrated in FIG. 3.
  • the flange 23 serves as a system for the current feedthrough 11 on the wall of the capsule; the latter rests on a bulge 24 encompassing the knob 14, which also contributes to the sealing.
  • each conductor pin 15 of the current feedthrough 11 there is a recess 26 with a circular cross section, which extends from the lower surface 13 of the base 10 and extends to approximately the end of the cylindrical knob part 20; this recess 26 thus forms a blind hole and an annular gap around the conductor pin 15.
  • the cylindrical nub part 20 is - as said - kept somewhat larger than the associated bore in the capsule, and the annular gap enables a due to the flexibility of the nub 14 thereby obtained easier insertion into the capsule.
  • the internal pressure lies against the wall 27 of the recess 26 or the annular gap, so that this results in an additional seal.
  • the connection between the - made of brass or iron - conductor pins 15 on the one hand and the knobs 14 on the other hand is gas-tight.

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • General Details Of Gearings (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Compressor (AREA)
  • Insulators (AREA)
  • Spark Plugs (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Defrosting Systems (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Non-Reversible Transmitting Devices (AREA)
  • Thermistors And Varistors (AREA)
  • Insulating Bodies (AREA)

Abstract

A current leadthrough particularly for a refrigerator comprises an insulator with a plurality of electrically conductive spaced apart pins extending through the insulator. The insulator includes a disc-shaped base portion with a plurality of nub portions corresponding to the member of pins, the pins extending through the nub portions. The nub portions extending upwardly from the base portion and the base portion comprise a material having temperature stability which is insensitive to chemicals and has some elasticity.

Description

Die Erfindung betrifft eine Stromdurchführung, insbesondere für Kältemaschinen, mit einem aus zumindest leicht elastischem Material, insbesondere Elastomeren, Thermoplasten od. dgl., bestehendem scheibenartigen Isolierkörper, aus dem eine von elektrisch leitenden Elementen durchsetzte, sich endwärts verjüngende Noppe herausgeformt ist.The invention relates to a current feedthrough, in particular for refrigeration machines, with a disk-like insulating body made of at least slightly elastic material, in particular elastomers, thermoplastics or the like, from which a knob which is penetrated by electrically conductive elements and tapers towards the end is formed.

Eine derartige Stromdurchführung offenbart die DE-A-1 464 203 : die vom scheibenartigen Isolierkörper abragende Noppe wird in ein Gegenstück eines anderen scheibenartigen Isolierkörpers eingesetzt. Dieses Gegenstück ist ein Rohrstumpf mit sich verjüngendem Innenraum und einem in diesen einragenden Ringwulst, der haltend in eine Ringnut an der Außenseite jener Noppe eingreift. Es entsteht so ein querschnittlich H-förmiger Isolierkörper aus elastisch stabilem Isoliermaterial mit einem Durchgangskanal für einen elektrischen Leiter.Such a feedthrough is disclosed in DE-A-1 464 203: the knob protruding from the disk-like insulating body is inserted into a counterpart of another disk-like insulating body. This counterpart is a pipe stub with a tapering interior and an annular bead protruding into it, which keeps engaging in an annular groove on the outside of that knob. The result is a cross-sectionally H-shaped insulating body made of elastically stable insulating material with a through channel for an electrical conductor.

Die Leiterstifte werden mittels dieser Dichtung in ihrer Lage arretiert und durch die an Ort und Stelle in die gewünschte Form gegossene Dichtung luftdicht abgeschlossen.The conductor pins are locked in their position by means of this seal and are sealed airtight by the seal cast into the desired shape on the spot.

Der zweiteilige Aufbau der Stromdurchführung ist sowohl während der Herstellung als auch bei der Montage sehr aufwendig. Darüber hinaus ist die Verbindung zwischen der Stromdurchführung einerseits und dem sie durchsetzenden Leiter anderseits nicht ausreichend betriebssicher.The two-part construction of the current lead-through is very complex both during manufacture and during assembly. In addition, the connection between the current feedthrough on the one hand and the conductor passing through it on the other hand is not sufficiently reliable.

Allgemein ergeben sich bei bekannten Stromdurchführungen Schwierigkeiten bei der Zuordnung der einzelnen Werkstoffe nach Ausdehnungskoeffizienten sowie bei der Fertigung verschiedenster Einzelteile.In general, known current feedthroughs give rise to difficulties in assigning the individual materials according to expansion coefficients and in the manufacture of a wide variety of individual parts.

Bekannt sind auch Stromdurchführungen aus einem Metallsockel und darin glaseingeschmolzenen Leiterstiften aus legiertem Stahl. Die mechanische bzw. chemische Verbindung dieser Teile mittels Druckglaseinschmelzung unter Schutzgas bedingt einen erheblichen Primärenergieverbrauch. Insgesamt ergeben sich auch hier verhältnismäßig hohe Kosten. Das üblicherweise verwendete Sinterglas weist eine mehr oder weniger große Porosität auf, die bei ungenügender Austrocknung und Versiegelung zur elektrischen Durchschlägen führen kann. Als weitere Mangel muß auch das Korrosionsproblem metallischer Teile angesehen werden, da die chemische Vernickelung der kompletten Durchführung nur zu einem qualitativ unbefriedigenden Kompromiß zwischen Oberflächenschutz und Verschweißbarkeit führen kann. Schwierigkeiten ergeben sich weiterhin dadurch, daß die unter großer Spannung stehende Glas/Metall-Verbindung beim Einschweißen der Durchführung in den Kompressor einem Wärmeschock ausgesetzt ist. welcher zu Mikrobeschädigungen und feinsten Glasabsplitterungen der Isolation mit nachfolgender Gasundichtigkeit führen kann. Darüber hinaus erfordert diese Einschweißtechnik ebenfalls hohe Primärenergie, großen Elektrodenverbrauch und damit insgesamt erhebliche Kosten.Current feedthroughs made of a metal base and glass-melted conductor pins made of alloy steel are also known. The mechanical or chemical connection of these parts by means of pressure glass melting under protective gas requires a considerable amount of primary energy. Overall, this also results in relatively high costs. The sintered glass usually used has a more or less large porosity, which can lead to electrical breakdowns if it is not sufficiently dried out and sealed. The corrosion problem of metallic parts must also be seen as a further deficiency, since the chemical nickel plating of the complete implementation can only lead to a qualitatively unsatisfactory compromise between surface protection and weldability. Difficulties also arise from the fact that the high-tension glass / metal connection is exposed to a thermal shock when the bushing is welded into the compressor. which can lead to micro-damage and finest glass splintering of the insulation with subsequent gas leakage. In addition, this welding technology also requires high primary energy, large electrode consumption and thus overall considerable costs.

Angesichts dieser Gegebenheiten hat sich der Erfinder die Aufgabe gestellt, bei einer Stromdurchführung der eingangs erwähnten Art die Herstellung und die Montage zu vereinfachen, den Kostenaufwand zu vermindern und gleichzeitig die Betriebssicherheit zu erhöhen.In view of these circumstances, the inventor has set himself the task of simplifying the manufacture and assembly of a current feedthrough of the type mentioned at the outset, reducing the cost and at the same time increasing the operational reliability.

Zur Lösung dieser Aufgabe führt, daß .der Isolierkörper aus einem mehrere exzentrisch vorgesehene Noppen tragenden, mittels eines einen zylindrischen Noppenteil radial überragenden Flansches verstärkten Sockel besteht, der einstückig aus temperaturbeständigem, gegen Chemikalien unempfindlichem Material geformt, insbesondere gespritzt ist, wobei die den Noppen zugekehrte Oberfläche des Sockels bzw. Flansches eine Anlagekante sowie die Außenfläche jedes als Leiterstift ausgebildeten Elementes mit der ihn umgebenden Noppe gasdicht verbunden ist.To achieve this object, the insulating body consists of a base which carries a plurality of eccentrically provided knobs and is reinforced by means of a flange projecting radially from a cylindrical knob part and which is formed in one piece from temperature-resistant, chemical-insensitive material, in particular injection-molded, the facing the knobs Surface of the base or flange, a contact edge and the outer surface of each element designed as a conductor pin is connected gas-tight to the knob surrounding it.

Dank dieser Maßgaben erreicht man eine gasdichte Verankerung der Stromdurchführung in der Kompressorkapsel od. dgl., eine zuverlässige elektrische Isolierung der Leiterstifte und gewährleistet deren dichten Sitz in dem Träger der Stromdurchführung, der hier vom Isolierkörper selbst gebildet ist.Thanks to these provisions, a gas-tight anchoring of the current leadthrough in the compressor capsule or the like is achieved, reliable electrical insulation of the conductor pins and their tight fit in the carrier of the current leadthrough which is formed here by the insulating body itself.

Es ist nunmehr auch möglich, elektrisch besser leitende Messingstifte zu integrieren, wohingegen beim Einschmelzverfahren lediglich Stahlstifte verwendet werden können.It is now also possible to integrate brass pins with better electrical conductivity, whereas only steel pins can be used in the melting process.

Als besonderer Vorzug ist die Einstückigkeit von Träger und Isolierkörper, also von Sockel und den Noppen anzusehen, was sowohl auf die Herstellung als auch die Handhabung erheblichen Einfluß hat.A particular advantage is the one-piece construction of the support and the insulating body, that is to say of the base and the knobs, which has a considerable influence on both the manufacture and the handling.

Der konische Noppenabschnitt erleichtert die Einführung in die Bohrungen der Kompressorwand od. dgl., wohingegen der zylindrische Teil eine einwandfreie Abdichtung gewährleistet.The conical knob section facilitates insertion into the bores of the compressor wall or the like, whereas the cylindrical part ensures a perfect seal.

Nach einem weiteren Merkmal der Erfindung ist etwa am Übergang zwischen dem konischen Teil der Noppe und dem zylindrischen Noppenteil ein etwa radial abragender ringförmiger Wulst vorgesehen. Die Wand der Kompressorkapsel liegt am Noppen zwischen dem Sockel und diesem Wulst an, wobei letzterer einerseits die einwandfreie Montage der Stromdurchführung anzeigt sowie anderseits als Widerstand gegen deren Herausdrücken aus der Kapsel dienlich ist.According to a further feature of the invention, an approximately radially projecting annular bead is provided at the transition between the conical part of the knob and the cylindrical knob part. The wall of the compressor capsule lies on the knobs between the base and this bead, the latter on the one hand indicating the correct installation of the current feedthrough and on the other hand serving as resistance to its being pushed out of the capsule.

Im Rahmen der Erfindung liegt es auch, daß der zylindrische Noppenteil von einem - parallel zum Noppen gerichteten - Ringwulst umfangen ist, der von der Oberfläche des Sockels aufragt. Dieser Ringwulst dient als Anlage für die Kapselwand und zur Abdichtung derselben.It is also within the scope of the invention that the cylindrical knob part is encompassed by an annular bead which is directed parallel to the knob and protrudes from the surface of the base. This ring bead serves as a system for the capsule wall and for sealing the same.

Vorteilhafterweise durchsetzt der Leiterstift ein zylindrisches Sackloch des Isolierkörpers, das sich von einer Unterfläche des Sockels bis etwa zum Ende des zylindrischen Noppenteiles erstreckt. Dieses Sackloch umgibt den Leiterstift im Querschnitt ringförmig und erlaubt es, die Montage der Stromdurchführung zu vereinfachen ; letztere läßt sich beim Einführen in eine Bohrung der Kapselwand od. dgl. zusammendrücken, außerdem ergibt sich gegenüber dieser eine zusätzliche Abdichtung, da sich der Innendruck gegen die Wandung der Stromdurchführung legt.Advantageously, the conductor pin penetrates a cylindrical blind hole in the insulating body, which extends from a lower surface of the base to approximately the end of the cylindrical knob part stretches. This blind hole surrounds the conductor pin in a ring shape in cross-section and makes it possible to simplify the assembly of the current lead-through; the latter can be compressed when inserted into a bore in the capsule wall or the like. In addition, there is an additional seal with respect to this, since the internal pressure lies against the wall of the current leadthrough.

Auf diese Weise ist es zudem in Verbesserung der Sicherheit nicht mehr möglich, die Stromdurchführung versehentlich zu entfernen, ohne daß sie zerstört würde.In this way, in addition to improving safety, it is no longer possible to accidentally remove the leadthrough without it being destroyed.

Der bereits erwähnte Flansch verstärkt den Sockel der Stromdurchführung erheblich.The flange already mentioned strengthens the base of the current feedthrough considerably.

Als besonderer Vorzug der Erfindung hat sich gezeigt, daß an den Leiterstiften lediglich Kontaktflächen angestaucht werden, wohingegen bei eingeschmolzenen Leiterstiften teure Kontaktplättchen aufzuschweißen sind.It has been shown as a particular advantage of the invention that only contact surfaces are pressed onto the conductor pins, whereas expensive contact plates have to be welded on when the conductor pins are melted.

Die Erfindung wird nachfolgend anhand eines in der Zeichnung wiedergegebenen bevorzugten Ausführungsbeispiels näher erläutert ; es zeigt

  • Figur 1 eine Seitenansicht einer Stromdurchführung ;
  • Figur 2 die Draufsicht auf Fig. 1 ;
  • Figur 3 einen vergrößerten Teillängsschnitt durch Fig. 1 nach deren Linie 111-111.
The invention is explained in more detail below with reference to a preferred exemplary embodiment shown in the drawing; it shows
  • Figure 1 is a side view of a current feedthrough;
  • Figure 2 is a top view of Fig. 1;
  • Figure 3 is an enlarged partial longitudinal section through Fig. 1 along the line 111-111.

Ein scheibenförmiger Sockel 10 einer Stromdurchführung 11 ist an einer Oberfläche 12 mit drei aus dieser herausgeformten Noppen 14 versehen, in denen zentrisch jeweils ein elektrisch leitender Stift 15 eingebettet ist. Sockel 10 und Noppen 14 sind dabei aus elektrisch nicht leitendem Elastomer bzw. Thermoplaste einstückig gespritzt. Die frei herausragenden Stiftenden 16 können je nach der zu übertragenden elektrischen Leistung mit oder ohne angestauchter Kontaktfläche ausgebildet sein.A disk-shaped base 10 of a current feedthrough 11 is provided on a surface 12 with three knobs 14 formed from it, in each of which an electrically conductive pin 15 is embedded centrally. Base 10 and knobs 14 are injection-molded in one piece from electrically non-conductive elastomer or thermoplastics. The freely protruding pin ends 16 can be designed with or without an upset contact surface, depending on the electrical power to be transmitted.

Die Noppen 14 weisen jeweils einen von ihrer Stirn 18 ausgehenden konischen Teil 19 auf, der zur Zentrierung beim Einknöpfen der Stromdurchführung 11 in eine nicht dargestellte Kapsel eines Kompressors dient. Ein an den konischen Teil 19 anschließender zylindrischer Noppenteil 20 ist um ein gewisses Maß größer als die ebenfalls nicht wiedergegebene zugehörige Bohrung der Kapsel und stellt das eigentliche Dichtelement der gesamten Stromdurchführung 11 dar.The knobs 14 each have a conical part 19 extending from their forehead 18, which is used for centering when the current feedthrough 11 is buttoned into a capsule (not shown) of a compressor. A cylindrical knob part 20 adjoining the conical part 19 is to a certain extent larger than the associated bore of the capsule, which is also not shown, and represents the actual sealing element of the entire current feedthrough 11.

Etwa am Übergang zwischen dem zylindrischen Noppenteil 20 und dem konischen Teil 19 ist ein ringförmiger Wulst 21 angeordnet, dem die nicht dargestellte Wand der Kapsel nach der Montage anliegt. Dieser Wulst 21 zeigt die richtige Montagelage der Stromdurchführung 11 an und dient außerdem als Anschlag für die Kapsel des Kompressors, um ein ungewolltes Herausgleiten der Stromdurchführung 11 zu verhindern.At the transition between the cylindrical knob part 20 and the conical part 19, an annular bead 21 is arranged, against which the wall of the capsule, not shown, bears after assembly. This bead 21 indicates the correct mounting position of the current leadthrough 11 and also serves as a stop for the capsule of the compressor in order to prevent the current leadthrough 11 from sliding out unintentionally.

Der scheibenförmige Sockel 10 ist durch einen die zylindrischen Noppenteile 20 seitlich überragenden Flansch 23 verstärkt, wie dies Figur 3 verdeutlicht. Der Flansch 23 dient als Anlage der Stromdurchführung 11 an der Wand der Kapsel ; letztere liegt einem die Noppe 14 umfangenden Wulst 24 an, der mit zur Abdichtung beiträgt.The disk-shaped base 10 is reinforced by a flange 23 projecting laterally from the cylindrical knob parts 20, as illustrated in FIG. 3. The flange 23 serves as a system for the current feedthrough 11 on the wall of the capsule; the latter rests on a bulge 24 encompassing the knob 14, which also contributes to the sealing.

Um jeden Leiterstift 15 der Stromdurchführung 11 ist eine im Querschnitt kreisförmige Ausnehmung 26 vorgesehen, die von der Unterfläche 13 des Sockels 10 ausgeht und sich bis etwa zum Ende des zylindrischen Noppenteils 20 erstreckt ; diese Ausnehmung 26 bildet somit ein Sackloch und einen ringförmigen Spalt um den Leiterstift 15. Der zylindrische Noppenteil 20 ist - wie gesagt - etwas größer gehalten als die zugehörige Bohrung in der Kapsel, und der ringförmige Spalt ermöglicht infolge der hierdurch gewonnenen Nachgibigkeit des Noppens 14 ein erleichtertes Einschieben in die Kapsel. Nach der Montage legt sich der Innendruck gegen die Wandung 27 der Ausnehmung 26 bzw. des ringförmigen Spaltes, so daß sich hierdurch eine zusätzliche Dichtung ergibt. Selbstverständlich ist die Verbindung zwischen den - aus Messing oder Eisen bestehenden - Leiterstiften 15 einerseits sowie den Noppen 14 anderseits gasdicht.Around each conductor pin 15 of the current feedthrough 11 there is a recess 26 with a circular cross section, which extends from the lower surface 13 of the base 10 and extends to approximately the end of the cylindrical knob part 20; this recess 26 thus forms a blind hole and an annular gap around the conductor pin 15. The cylindrical nub part 20 is - as said - kept somewhat larger than the associated bore in the capsule, and the annular gap enables a due to the flexibility of the nub 14 thereby obtained easier insertion into the capsule. After assembly, the internal pressure lies against the wall 27 of the recess 26 or the annular gap, so that this results in an additional seal. Of course, the connection between the - made of brass or iron - conductor pins 15 on the one hand and the knobs 14 on the other hand is gas-tight.

Claims (5)

1. A current leadthrough particularly for refrigerators, comprising a disc-shaped insulator consisting of a material having at least some elasticity, especially elastomers, thermoplastics or the like, from which a nub (14) tapering towards the end and interspersed by electrically conductive elements (15) is formed out, characterized in that the insulator includes a base portion (10) provided with several eccentric nubs (14) and is reinforced by a flange (23) which projects radially above a cylindrical nub portion (20), the insulator being formed, especially injected, of one piece and comprising a material of temperature stability insensitive to chemicals, with the surface (12) of the base portion or flange having the form of a fitting edge and the outer surface of each element in the form of a conductive pin (15) being connected gas-tight with the nub surrounding the pin.
2. A current leadthrough according to claim 1 including a ring-shaped bead (21) formed around the nub, characterized in that the nub (14) adjoins the surface (12) of the base portion (10) with the cylindrical nub portion (20) and the bead (21) extends at about the transition between the conical part (19) of the nub (14) and the cylindrical nub portion.
3. A current leadthrough according to claim 1 or 2, characterized in that the cylindrical nub portion (20) is surrounded by a ring-shaped bead (24) of the base part (10).
4. A current leadthrough according to at least one of the claims 1 to 3, characterized in that the conductive pin (15) coaxially intersperses a cylindrical blind hole (26) of the insulator which extends from an undersurface (13) of the base part (10) towards the end of the cylindrical nub portion (20).
5. A current leadthrough according to one of the claims 1 to 4 characterized in that the free end of the conductive pin (15) is provided with an upset contact surface.
EP84103204A 1983-07-07 1984-03-23 Lead-through insulators, especially for refrigerating machines Expired EP0134390B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84103204T ATE27871T1 (en) 1983-07-07 1984-03-23 CURRENT FEEDTHROUGH, ESPECIALLY FOR REFRIGERATION MACHINES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3324466A DE3324466C2 (en) 1983-07-07 1983-07-07 Power feedthrough, in particular for refrigerating machines
DE3324466 1983-07-07

Publications (2)

Publication Number Publication Date
EP0134390A1 EP0134390A1 (en) 1985-03-20
EP0134390B1 true EP0134390B1 (en) 1987-06-16

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EP84103204A Expired EP0134390B1 (en) 1983-07-07 1984-03-23 Lead-through insulators, especially for refrigerating machines

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US (1) US4700999A (en)
EP (1) EP0134390B1 (en)
JP (2) JPS6037614A (en)
AT (1) ATE27871T1 (en)
AU (1) AU575325B2 (en)
BR (1) BR8402894A (en)
CA (1) CA1221752A (en)
DE (1) DE3324466C2 (en)
DK (1) DK161115C (en)
ES (1) ES278942Y (en)
IN (1) IN161126B (en)
TR (1) TR21912A (en)

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* Cited by examiner, † Cited by third party
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US4595557A (en) * 1985-04-11 1986-06-17 Emerson Electric Co. Method of increasing hermeticity of metal components of glass/metal and ceramic/metal seals
US4984973A (en) * 1990-03-21 1991-01-15 Tecumseh Products Company Hermetic motor compressor unit having a hermetic terminal with electrically insulating anti-tracking cap
JP3020341B2 (en) * 1992-03-18 2000-03-15 松下冷機株式会社 Airtight terminal protection cover
US5631445A (en) * 1994-10-07 1997-05-20 Ford Motor Company Automotive fuel tank electrical fitting
DE19727102A1 (en) * 1997-06-26 1999-01-07 Putzmeister Ag Pipe switch for twin-cylinder viscous fluid pumps
US6555754B2 (en) * 2001-01-18 2003-04-29 Walbro Corporation Automotive fuel tank electrical fitting
EP2083426A1 (en) * 2008-01-28 2009-07-29 ABB Research Ltd. A bushing, an electric power distribution installation provided therewith, and a method of producing such a bushing
GB2466441A (en) * 2008-12-18 2010-06-23 Tyco Electronics Ltd Uk Electrical current feed-through bush with air gap
DE102010043773B4 (en) 2010-01-29 2014-05-22 Halla Visteon Climate Control Corporation 95 Electrical feedthrough for hermetic compressors
DE102015103053A1 (en) 2015-03-03 2016-09-08 Halla Visteon Climate Control Corporation Electro-making unit
DE102016100394A1 (en) 2016-01-12 2017-07-13 Hanon Systems Electric current feed-through arrangement and method for its manufacture and assembly

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433911A (en) * 1944-11-29 1948-01-06 Johnston Leith Lead through terminal
FR1019862A (en) * 1950-06-09 1953-01-27 Device for leaktight passage of electric wires in armored devices
CH335234A (en) * 1956-07-16 1958-12-31 Acec Product comprising a sleeve of cast synthetic resin in which is inserted at least one metal rod and method of manufacturing this product
DE1464203A1 (en) * 1962-03-07 1969-12-04 Licentia Gmbh Isolation arrangement
US3495028A (en) * 1964-11-23 1970-02-10 American Crucible Products Co Unitary hermetic connector with contained sealing means
GB1087191A (en) * 1966-01-31 1967-10-11 Richard Urann Clark Electric terminal
US3422392A (en) * 1966-06-08 1969-01-14 Westinghouse Electric Corp Electrical bushing assembly
US3646499A (en) * 1970-06-22 1972-02-29 Microdot Inc Multiple connector
US3696321A (en) * 1970-09-14 1972-10-03 Itt Electrical connector
US3708612A (en) * 1971-07-02 1973-01-02 Anderson Electric Corp Electrical bushing assembly
JPS5215000B2 (en) * 1971-09-27 1977-04-26
US3770878A (en) * 1971-12-06 1973-11-06 Terminals Inc Hermetically sealed electrical terminal
DE2323967A1 (en) * 1973-05-11 1974-11-28 Us Terminals Inc CONNECTOR FOR AN ELECTRICAL CONNECTION
US3842389A (en) * 1973-08-23 1974-10-15 Amp Inc Field repairable high voltage connector
JPS511036U (en) * 1974-06-17 1976-01-07
US4054354A (en) * 1975-10-01 1977-10-18 E. I. Du Pont De Nemours And Company Connector housing
US4138183A (en) * 1976-06-21 1979-02-06 G&H Technology, Inc. Cryogenic connector
JPS5634710Y2 (en) * 1976-10-28 1981-08-15
DE2725796C2 (en) * 1977-06-08 1985-06-13 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München Electrical outlet

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DK161115B (en) 1991-05-27
ATE27871T1 (en) 1987-07-15
DK331984D0 (en) 1984-07-06
BR8402894A (en) 1985-05-21
JPH03121629U (en) 1991-12-12
AU2883184A (en) 1985-01-10
ES278942U (en) 1984-09-16
DK331984A (en) 1985-01-08
CA1221752A (en) 1987-05-12
AU575325B2 (en) 1988-07-28
TR21912A (en) 1985-11-01
ES278942Y (en) 1985-04-01
DE3324466A1 (en) 1985-01-17
JPS6037614A (en) 1985-02-27
DE3324466C2 (en) 1986-08-28
DK161115C (en) 1991-11-18
EP0134390A1 (en) 1985-03-20
US4700999A (en) 1987-10-20
IN161126B (en) 1987-10-10

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