EP0222686A1 - Contact arrangement with intermediate elements separating the contact levers from one another - Google Patents

Contact arrangement with intermediate elements separating the contact levers from one another Download PDF

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Publication number
EP0222686A1
EP0222686A1 EP86730163A EP86730163A EP0222686A1 EP 0222686 A1 EP0222686 A1 EP 0222686A1 EP 86730163 A EP86730163 A EP 86730163A EP 86730163 A EP86730163 A EP 86730163A EP 0222686 A1 EP0222686 A1 EP 0222686A1
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EP
European Patent Office
Prior art keywords
contact
levers
support
lever
holder
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
EP86730163A
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German (de)
French (fr)
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EP0222686B1 (en
Inventor
Bernd Dipl.-Ing. Adam
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Siemens AG
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Siemens AG
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H1/226—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member having a plurality of parallel contact bars
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H1/226—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member having a plurality of parallel contact bars
    • H01H2001/228—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member having a plurality of parallel contact bars with insulating spacers between the contact bars
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/38—Auxiliary contacts on to which the arc is transferred from the main contacts

Definitions

  • the invention relates to a contact arrangement for a low-voltage circuit breaker with a fixed part and a movable part, the movable part having at least one burn-off contact lever and at least two main contact levers which, together with the intermediate layers separating the contact lever, are pivotably attached to a pivotally mounted holder relative to the holder are and the holder is connected by a coupling member to a drive device.
  • a contact arrangement of this type has become known, for example, from US-A-3 402 274.
  • the intermediate layers cause a separation of the contact levers to such an extent that the current paths of the adjacent contact levers are separated from one another. This is desirable to avoid eddy currents within the contact arrangement.
  • the object of the invention is to avoid undesired deflection of the bearing pin of the contact levers with as little additional material as possible.
  • the intermediate layers are designed as support members which are arranged between the bearing pin and a coupling pin which connects the holder to the coupling element in an articulated manner.
  • the coupling pin can be used as an already required part for supporting the bearing pin of the contact lever without it being necessary to enlarge the cross section of the bearing pin.
  • each support member has a support lever which exerts the actual support effect and a spacer which is movable relative to the support lever.
  • This arrangement allows the contact levers to be supported on a relatively large part of the surfaces facing one another without thereby causing disruptive frictional forces. These are considerably reduced by the mobility of the spacers.
  • each support lever has a part concentrically surrounding the bearing pin with a circular arc having more than 180 ° and the spacer has a recess which overlaps the concentric part of the support lever.
  • the desired limitation of the mobility of the spacer can be achieved by a suitable dimensioning of the opening angle of the recess of the spacer.
  • the contact arrangement 1 shown in FIGS. 1, 2 and 3 has a fixed part 2 and a movable part 3.
  • An insulating block 4 which has an approximately angular cross section, serves as the carrier for the fixed parts.
  • a main contact body 5 which also serves as an upper connecting bar, is attached with contact piece supports 6.
  • a fixed burn-off contact body 7 with a contact piece support 10 and with an arcing horn 11 is in conductive connection with the main contact body 5.
  • a bifurcated connecting rail 12 is located on the underside of the insulating block 4 attached to which a flexible current band 13 is conductively connected.
  • the flexible current band 13 forms a movable electrical connection between the fixed part 2 and the movable part 3 of the contact arrangement 1.
  • the movable part 3 has a central burn-off contact lever 15 with a burn-off contact body 16 as well as a contact piece support 17 and an arcing horn 20.
  • Main contact levers 21 and 22, which are also provided with contact piece supports 23, are located on both sides of the burn-off contact lever 15. As FIG. 3 in particular shows, there are a total of five flexible current bands 13, two for each of the main contact levers 21 and one current band for the burn-off contact lever 15.
  • the pivot axis of the movable part 3 of the contact arrangement 1 is formed by a hinge pin 24, the ends of which engage in lateral legs 25 of a bearing bracket 26 which is fastened to the insulating block 4.
  • the hinge pin 24 also passes through bolts 30, 31 and 32 connected side walls 33 of a holder 34 which receives the contact lever. These sit on a common pivot pin serving as a pivot bearing 35, the ends of which are supported in the side walls 33 of the holder 34.
  • Insulating coupling elements 36 which are omitted in FIG. 3 for the sake of clarity, are used to transmit a drive movement to the movable part of the contact arrangement 1.
  • the coupling members 36 pivotally engage a coupling bolt 37, the ends of which are also supported in the side walls 33 of the holder 34.
  • Movable part 3 of contact arrangement 1 moves into the switched-on position shown by moving coupling elements 36 in the direction of arrow 40 in FIGS. 1 and 2.
  • the required contact force between the contact piece supports 6 and 23 and 10 and 17 is generated by tension between the legs of the U-shaped current strips 13 arranged compression springs 41.
  • the coupling members 36 are released by unlatching a suitable switch lock (not shown), as a result of which the movable part 3 of the contact arrangement 1 reaches its switch-off position.
  • a uniform distribution of the contact forces over the individual contact points is essential for a low-loss current transfer between the mutually opposite fixed and movable contact parts.
  • support levers 45 are arranged between the burn-off contact lever 15 and the main contact levers adjoining on both sides, which are shown in broken lines in FIG. 2 and are shown separately in an enlarged scale in FIG.
  • the support levers 45 have bearing openings 46 and 47 for the passage of the hinge pin 35 and the coupling pin 37.
  • the coupling pin 37 is used to support the hinge pin 35.
  • spacers 50 between the burn-off contact lever 15 and the main contact levers 21, which cover a substantial part of the mutually facing sides of the contact levers. This prevents the contact levers from tilting under the influence of current forces.
  • each support lever 45 is concentric with its one for the hinge pin 35 provided bearing opening 46 with an arcuate part 48, the arc extending over more than 180 °.
  • the spacers 50 have a recess 51 adapted to this circular arc shape, the opening of which is denoted by an arc arrow 52 shown in FIG. 4, so that the support lever 45 and the spacer 50 can perform a limited pivoting relative to one another, which need only be a few degrees of angle.
  • the two parts cannot be separated from each other as long as they are both on the same plane.
  • a non-magnetic steel is suitable as a material for the production of both the support lever 45 and the spacer 50, which at the same time has a relatively low electrical conductivity due to its alloy components.
  • Different materials can also be used, e.g. B. non-magnetic steel for the support lever 45 and brass or insulating material for the spacers 50th

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)

Abstract

Eine Kontaktanordnung (1) für einen Niederspannungs-­Leistungsschalter weist einen bewegbaren Teil (3) mit mehreren Kontakhebeln (15, 21) auf. Zur Vermeidung einer unerwünschten Durchbiegung eines die Kontakthebel durch­setzenden Gelenkbolzens (35) sind zwischen den Kontakt­hebeln Stützhebel (45) angeordnet, die Durchtrittsöffnungen für den Gelenkbolzen (35) der Kontakthebel und einen Kupplungsbolzen (7) aufweisen, der zur Einleitung einer Antriebskraft durch Koppelorgane (36) dient. Ferner befinden sich zwischen den Kontakthebeln Distanzstücke (50), die an den Stützhebeln (45) begrenzt schwenkbar gelagert sind und eine reinbungsarme Bewegbarkeit der Kontakthebel gegenein­ander sicherstellen.

Figure imgaf001
A contact arrangement (1) for a low-voltage circuit breaker has a movable part (3) with a plurality of contact levers (15, 21). To avoid undesired deflection of an articulation pin (35) passing through the contact levers, support levers (45) are arranged between the contact levers, which have passage openings for the articulation pin (35) of the contact levers and a coupling pin (7) which is used to introduce a driving force through coupling members (36 ) serves. Furthermore, spacers (50) are located between the contact levers, which are pivotably supported on the support levers (45) to a limited extent and ensure that the contact levers can be moved with little effort.
Figure imgaf001

Description

Die Erfindung betrifft eine Kontaktanordnung für einen Niederspannungs-Leistungsschalter mit einem feststehenden Teil und einem bewegbaren Teil, wobei der bewegbare Teil wenigstens einen Abbrennkontakthebel und wenigstens zwei Hauptkontakthebel aufweist, die zusammen mit die Kontakt­hebel trennenden Zwischenlagen an einen schwenkbar ge­lagerten Halter relativ zu dem Halter schwenkbar ange­bracht sind und der Halter durch ein Koppelorgan mit einer Antriebsvorrichtung verbunden ist.The invention relates to a contact arrangement for a low-voltage circuit breaker with a fixed part and a movable part, the movable part having at least one burn-off contact lever and at least two main contact levers which, together with the intermediate layers separating the contact lever, are pivotably attached to a pivotally mounted holder relative to the holder are and the holder is connected by a coupling member to a drive device.

Eine Kontaktanordnung dieser Art ist beispielsweise durch die US-A-3 402 274 bekannt gworden. Die Zwischenlagen be­wirken hierbei eine Trennung der Kontakthebel in solchem Maß, daß die Strompfade der benachbarten Kontakthebel von einander getrennt werden. Dies ist erwünscht, um Wirbel­ströme innerhalb der Kontaktanordnung zu vermeiden.A contact arrangement of this type has become known, for example, from US-A-3 402 274. The intermediate layers cause a separation of the contact levers to such an extent that the current paths of the adjacent contact levers are separated from one another. This is desirable to avoid eddy currents within the contact arrangement.

Den Vorteilen der Zwischenlagen zwischen den Kontakthebeln steht eine unerwünschte Vergrößerung der Stützweite des Lagerbolzen entgegen, wodurch bei einem gegebenen Querschnitt die Durchbiegung vergrößert wird. Eine solche Durchbiegung bringt um so größere Probleme mit sich, je breiter die Kon­taktanordnung ist, d. h. je größer die Anzahl erforderlicher Kontakthebel ist. Eine Durchbiegung des Lagerbolzens wirkt sich nämlich ebenfalls im Sinne einer ungleichen Verteilung der Kontaktkräfte aus mit dem Ergebnis einer starken ört­lichen Erhitzung.The advantages of the intermediate layers between the contact levers are countered by an undesirable increase in the support width of the bearing pin, as a result of which the deflection is increased for a given cross section. Such deflection poses greater problems the wider the contact arrangement, ie the larger the number of contact levers required. A deflection of the bearing pin also works in the sense of an uneven distribution of the contact forces with the result of strong local heating.

Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, eine unerwünschte Durchbiegung des Lagerbolzens der Kontakt­hebel mit möglichst geringem Aufwand an zusätzlichem Material zu vermeiden.Proceeding from this, the object of the invention is to avoid undesired deflection of the bearing pin of the contact levers with as little additional material as possible.

Gemäß der Erfindung gechieht dies dadurch, daß die Zwischen­lagen als Stützglieder ausgebildet sind, die zwischem dem Lagerbolzen und einem den Halter mit dem Koppelorgan ge­lenkig verbindenden Kupplungsbolzen angeordnet sind. Auf diese Weise kann der Kupplungsbolzen als ohnehin benötigtes Teil zur Abstützung des Lagerbolzens der Kontakthebel her­angezogen werden, ohne daß es erforderlich ist, den Quer­schnitt des Lagerbolzens zu vergrößern.According to the invention, this is achieved in that the intermediate layers are designed as support members which are arranged between the bearing pin and a coupling pin which connects the holder to the coupling element in an articulated manner. In this way, the coupling pin can be used as an already required part for supporting the bearing pin of the contact lever without it being necessary to enlarge the cross section of the bearing pin.

Zu der erwünschten Vergleichmäßigung der Kontaktkräfte an den einzelnen Kontakthebeln kann noch dadurch beigetragen werden, daß jedes Stützglied einen die eigentliche Stütz­wirkung ausübenden Stützhebel und ein relativ zu dem Stützhebel bewegbares Distanzstück aufweist. Diese Anord­nung erlaubt es nämlich, die Kontakthebel auf einem ver­hältnismäßig großen Teil der einander zugewandten Flächen abzustützen, ohne hierdurch störende Reibungskräfte zu verursachen. Diese werden durch die Beweglichkeit der Distanzstücke erheblich veringert.The desired equalization of the contact forces on the individual contact levers can also be contributed in that each support member has a support lever which exerts the actual support effect and a spacer which is movable relative to the support lever. This arrangement allows the contact levers to be supported on a relatively large part of the surfaces facing one another without thereby causing disruptive frictional forces. These are considerably reduced by the mobility of the spacers.

Die Beweglichkeit der Distanzstücke kann auf überraschend einfache Weise dadurch erzielt werden, daß jeder Stützhebel einen den Lagerbolzen mit einem mehr als 180° aufweisenden Kreisbogen konzentrisch umgebenden Teil und das Distanz­stück einen den konzentrischen Teil des Stützhebel über­greifende Ausnehmung besitzt. Die erwünschte Begrenzung der Bewegbarkeit des Distanzstückes kann hierbei durch eine ge­eignete Bemessung des Öffnungswinkels der Ausnehmung des Distanzstückes erreicht werden.The mobility of the spacers can be achieved in a surprisingly simple manner in that each support lever has a part concentrically surrounding the bearing pin with a circular arc having more than 180 ° and the spacer has a recess which overlaps the concentric part of the support lever. The desired limitation of the mobility of the spacer can be achieved by a suitable dimensioning of the opening angle of the recess of the spacer.

Als Werkstoff zur Herstellung der Stützhebel und der Dis­tanzstücke eignet sich beispielsweise unmagnetischer Stahl. Dieses Material besitzen neben einer hohen mechanischen Festigkeit die Eigenschaft einer relativ niedrigen elek­trischen Leitfähigkeit, wodurch die Bildung einer quer zu der vorgesehenen Richung des Sromes innerhalb der Kontaktan­ordnung verlaufenden Strombahn weitgehend unterbunden wird. Ferner können die Stützhebel und die Distanzstücke aus unterschiedlichen Werkstoffen gefertigt werden, z. B. aus Stahlblech und aus Messing. Die Erfindung wird im folgenden anhand des in den Figuren dargestellten Ausführungsbei­spieles näher erläutert.

  • Die Figur 1 zeigt in einer Seitenansicht eine Kontaktan­ordnung eines Niederspannungs-Leistungsschalters.
  • In der Figur 2 ist die Kontaktanordnung gemäß der Figur 1 in einer teilweise geschnittenen Seitenansicht gezeigt.
  • Die Figur 3 ist eine Ansicht des bewegbaren Teiles der Kon­taktanordnung nach den Figuren 1 und 2.
  • Die Figur 4 zeigt ein Stützglied und ein Distanzstück.
Non-magnetic steel, for example, is suitable as the material for producing the support levers and the spacers. In addition to high mechanical strength, this material has the property of a relatively low electrical conductivity, which largely prevents the formation of a current path running transversely to the intended direction of the current within the contact arrangement. Furthermore, the support lever and the spacers can be made of different materials, e.g. B. made of sheet steel and brass. The invention is explained below with reference to the embodiment shown in the figures.
  • FIG. 1 shows a side view of a contact arrangement of a low-voltage circuit breaker.
  • FIG. 2 shows the contact arrangement according to FIG. 1 in a partially sectioned side view.
  • FIG. 3 is a view of the movable part of the contact arrangement according to FIGS. 1 and 2.
  • Figure 4 shows a support member and a spacer.

Die in den Figuren 1, 2 und 3 gezeigte Kontaktanordnung 1 weist einen feststehenden Teil 2 und einen bewegbaren Teil 3 auf. Als Träger der feststehenden Teile dient ein Isolier­block 4, der einen etwa winkelförmigen Querschnitt besitzt. An der Oberseite des Isolierblockes 4 ist ein zugleich als obere Anschlußschiene dienender Hauptkontaktkörper 5 mit Schaltstückauflagen 6 befestigt. In leitender Verbindung mit dem Hauptkontaktkörper 5 steht ein feststehender Ab­brennkontaktkörper 7 mit einer Schaltstückauflage 10 sowie mit einem Lichtbogenhorn 11. An der Unterseite des Isolier­blockes 4 ist eine gegabelt ausgebildete Anschlußschiene 12 befestigt, mit der leitend ein biegsames Stromband 13 ver­bunden ist.The contact arrangement 1 shown in FIGS. 1, 2 and 3 has a fixed part 2 and a movable part 3. An insulating block 4, which has an approximately angular cross section, serves as the carrier for the fixed parts. On the top of the insulating block 4, a main contact body 5, which also serves as an upper connecting bar, is attached with contact piece supports 6. A fixed burn-off contact body 7 with a contact piece support 10 and with an arcing horn 11 is in conductive connection with the main contact body 5. A bifurcated connecting rail 12 is located on the underside of the insulating block 4 attached to which a flexible current band 13 is conductively connected.

Das biegsame Stromband 13 bildet eine bewegbare elektrische Verbindung zwischen dem feststehenden Teil 2 und dem beweg­baren Teil 3 der Kontaktanordnung 1. Der bewegbare Teil 3 weist einen mittleren Abbrennkontakthebel 15 mit einem Ab­brennkontaktkörper 16 sowie eine Schaltstückauflage 17 und ein Lichtbogenhorn 20 auf. Beidseitig des Abbrennkontakt­hebels 15 befinden sich Hauptkontakthebel 21 und 22, die gleichfalls mit Schaltstückauflagen 23 versehen sind. Wie insbesondere die Figur 3 zeigt, sind insgesamt fünf biegsame Strombänder 13 vorhanden, und zwar jeweils zwei für jeden der Hauptkontakthebel 21 und ein Stromband für den Abbrenn­kontakthebel 15.The flexible current band 13 forms a movable electrical connection between the fixed part 2 and the movable part 3 of the contact arrangement 1. The movable part 3 has a central burn-off contact lever 15 with a burn-off contact body 16 as well as a contact piece support 17 and an arcing horn 20. Main contact levers 21 and 22, which are also provided with contact piece supports 23, are located on both sides of the burn-off contact lever 15. As FIG. 3 in particular shows, there are a total of five flexible current bands 13, two for each of the main contact levers 21 and one current band for the burn-off contact lever 15.

Die Schwenkachse des bewegbaren Teiles 3 der Kontaktanord­nung 1 wird durch einen Gelenkbolzen 24 gebildet, dessen Enden in seitliche Schenkel 25 eines Lagerbügels 26 eingrei­fen, der an dem Isolierblock 4 befestigt ist. Der Gelenkbol­zen 24 durchsetzt ferner durch Bolzen 30, 31 und 32 verbun­dene Seitenwände 33 eines Halters 34, der die Kontakthebel aufnimmt. Diese sitzen auf einem gemeinsamen, als Schwenk­lager dienenden Lagerbolzen 35, dessen Enden in den Seiten­wänden 33 des Halters 34 abgestützt sind. Zur Übertragung einer Antriebsbewegung auf den bewegbaren Teil der Kontakt­anordnung 1 dienen isolierende Koppelorgane 36, die in der Figur 3 zur Verbesserung der Übersichtlichkeit fortgelassen sind. Die Koppelorgane 36 greifen gelenkig an einem Kupp­lungsbolzen 37 an, dessen Enden gleichfalls in den Seitenwänden 33 des Halters 34 abgestützt sind.The pivot axis of the movable part 3 of the contact arrangement 1 is formed by a hinge pin 24, the ends of which engage in lateral legs 25 of a bearing bracket 26 which is fastened to the insulating block 4. The hinge pin 24 also passes through bolts 30, 31 and 32 connected side walls 33 of a holder 34 which receives the contact lever. These sit on a common pivot pin serving as a pivot bearing 35, the ends of which are supported in the side walls 33 of the holder 34. Insulating coupling elements 36, which are omitted in FIG. 3 for the sake of clarity, are used to transmit a drive movement to the movable part of the contact arrangement 1. The coupling members 36 pivotally engage a coupling bolt 37, the ends of which are also supported in the side walls 33 of the holder 34.

In die dargestellte Einschaltstellung gelangt der bewegbare Teil 3 der Kontaktanordnung 1 durch eine Bewegung der Koppel­organe 36 in Richtung des Pfeiles 40 in den Figuren 1 und 2.Movable part 3 of contact arrangement 1 moves into the switched-on position shown by moving coupling elements 36 in the direction of arrow 40 in FIGS. 1 and 2.

Dabei wird durch Spannung zwischen den Schenkeln der U-för­mig gebogenen Strombänder 13 angeordneter Druckfedern 41 die erforderliche Kontaktkraft zwischen den Schaltstückauflagen 6 und 23 sowie 10 und 17 erzeugt. Zum Ausschalten werden die Koppelorgane 36 durch Entklinkung eines nicht dargestellten geeigneten Schaltschlosses freigegeben, wodurch der bewegba­re Teil 3 der Kontaktanordnung 1 in seine Ausschaltstellung gelangt.The required contact force between the contact piece supports 6 and 23 and 10 and 17 is generated by tension between the legs of the U-shaped current strips 13 arranged compression springs 41. To switch off, the coupling members 36 are released by unlatching a suitable switch lock (not shown), as a result of which the movable part 3 of the contact arrangement 1 reaches its switch-off position.

Wesentlich für einen verlustarmen Stromübergang zwischen den einander gegenüberstehenden feststehenden und bewegbaren Kontaktteilen ist eine gleichmäßige Verteilung der Kontakt­kräfte auf die einzelnen Kontaktstellen.A uniform distribution of the contact forces over the individual contact points is essential for a low-loss current transfer between the mutually opposite fixed and movable contact parts.

Hierzu sind zwischen dem Abbrennkontakhebel 15 und den beid­seitig angrenzenden Hauptkontakthebeln 21 Stützhebel 45 ange­ordnet, die in der Figur 2 gestrichelt eingezeichnet und in der Figur 4 in vergrößertem Maßstab gesondert dargestellt sind. Die Stützhebel 45 besitzen Lageröffnungen 46 und 47 für den Durchtritt des Gelenkbolzens 35 und des Kupplungs­bolzens 37. Auf diese Weise wird der Kupplungsbolzen 37 zur Abstützung des Gelenkbolzens 35 herangezogen. Ferner befin­det sich zwischen dem Abbrennkontakthebel 15 und den Haupt­kontakthebeln 21 Distanzstücke 50, die einen wesentlichen Teil der einander zugewandten Seiten der Kontakthebel be­decken. Damit ist eine Verkantung der Kontakthebel unter dem Einfluß von Stromkräften verhindert. Dennoch können sich die Kontakthebel weitgehend unabhängig voneinander bewegen, wie dies für die gleichmäßige Verteilung der Kontaktkräfte er­wünscht ist, weil die Distanzstücke 50 zwischen dem Abbrenn­kontakthebel 15 und den Hautpkontakthebeln 21 bewegbar sind. Dies wird dadurch erreicht, daß die Stützhebel 45 in der ins­besondere aus der Figur 4 zu entnehmenden Weise als Schwenk­lager der Distanzstücke 50 benutzt werden. Jeder Stützhebel 45 ist hierzu konzentrisch zu seiner für den Gelenkbolzen 35 vorgesehen Lageröffnung 46 mit einem kreisbogenförmigen Teil 48 versehen, wobei sich der Kreisbogen über mehr als 180° erstreckt. Die Distanzstücke 50 weisen eine dieser Kreisbogenform angepaßte Ausnehmung 51 auf, deren durch einen in Figur 4 eingetragenen Bogenpfeil 52 bezeichnete Öffnung so bemessen ist, daß der Stützhebel 45 und das Distanzstück 50 eine begrenzte Schwenkung gegeneinander ausführen können, die nur wenige Winkelgrade zu betragen braucht. Andererseits können beide Teile nicht voneinander getrennt werden, solange sie beide in derselben Ebene liegen.For this purpose, support levers 45 are arranged between the burn-off contact lever 15 and the main contact levers adjoining on both sides, which are shown in broken lines in FIG. 2 and are shown separately in an enlarged scale in FIG. The support levers 45 have bearing openings 46 and 47 for the passage of the hinge pin 35 and the coupling pin 37. In this way, the coupling pin 37 is used to support the hinge pin 35. Furthermore, there are spacers 50 between the burn-off contact lever 15 and the main contact levers 21, which cover a substantial part of the mutually facing sides of the contact levers. This prevents the contact levers from tilting under the influence of current forces. Nevertheless, the contact levers can move largely independently of one another, as is desired for the uniform distribution of the contact forces, because the spacers 50 can be moved between the burn-off contact lever 15 and the skin contact levers 21. This is achieved in that the support levers 45 are used in the manner shown in FIG. 4 in particular as a pivot bearing of the spacers 50. For this purpose, each support lever 45 is concentric with its one for the hinge pin 35 provided bearing opening 46 with an arcuate part 48, the arc extending over more than 180 °. The spacers 50 have a recess 51 adapted to this circular arc shape, the opening of which is denoted by an arc arrow 52 shown in FIG. 4, so that the support lever 45 and the spacer 50 can perform a limited pivoting relative to one another, which need only be a few degrees of angle. On the other hand, the two parts cannot be separated from each other as long as they are both on the same plane.

Wie bereits erwähnt, eignet sich als Werkstoff zur Herstel­lung sowohl des Stützhebels 45 als auch des Distanzstückes 50 ein unmagnetischer Stahl, der aufgrund seiner Legierungsbe­standteile zugleich eine relativ niedrige elektrische Leit­fähigkeit aufweist. Es können auch unterschiedliche Werkstof­fe eingesetzt werden, z. B. unmagnetischer Stahl für die Stützhebel 45 und Messing oder Isolierstoff für die Distanzstücke 50.As already mentioned, a non-magnetic steel is suitable as a material for the production of both the support lever 45 and the spacer 50, which at the same time has a relatively low electrical conductivity due to its alloy components. Different materials can also be used, e.g. B. non-magnetic steel for the support lever 45 and brass or insulating material for the spacers 50th

Claims (3)

1. Kontaktanordnung (1) für einen Niederspannungs-Leistungs­schalter mit einem feststehenden Teil (2) und einem beweg­baren Teil (3), wobei der bewegbare Teil (3) wenigstens einen Abbrennkontakthebel (15) und wenigstens zwei Haupt­kontakthebel (21, 22) aufweist, die zusammen mit die Kontakt­hebel (15, 21) trennenden Zwischenlagen (45, 50) an einem schwenkbar gelagerten Halter (34) relativ zu dem Halter (34) um einen Gelenklbolzen (35) schwenkbar angebracht sind und der Halter (34) durch ein Koppelorgan (36) mit einer Antriebsvorrichtung verbunden ist, dadurch gekennzeichnet, daß die Zwischenlagen als Stützglieder (4) ausgebildet sind, die zwischen den Lager­bolzen (35) und einem den Halter (34) mit dem Koppelorgan (36) gelenkig verbindenden Kupplungsbolzen angeordnet sind.1. Contact arrangement (1) for a low-voltage circuit breaker with a fixed part (2) and a movable part (3), the movable part (3) having at least one burn-off contact lever (15) and at least two main contact levers (21, 22), the intermediate layers (45, 50) separating the contact levers (15, 21) are pivotably mounted on a pivotably mounted holder (34) relative to the holder (34) about an articulated bolt (35) and the holder (34) by a coupling member (36) is connected to a drive device, characterized in that the intermediate layers are designed as support members (4) which are arranged between the bearing bolts (35) and a coupling bolt which articulates the holder (34) with the coupling member (36). 2. Kontaktanordnung nach Anspruch 1, dadurch gekennzeichnet, daß jedes Stützglied (44) einen die eigentliche Stützwirkung ausübenden Stützhebel (45) und ein relativ zu dem Stützhebel (45) bewegbares Distanzstück (50) aufweist.2. Contact arrangement according to claim 1, characterized in that each support member (44) has an actual support effect exercising support lever (45) and a relative to the support lever (45) movable spacer (50). 3. Kontaktanordnung nach Anspruch 2. dadurch gekennzeichnet, daß der Stützhebel (45) einen den Gelenkbolzen (35) mit einem mehr als 180° aufweisenden Kreisbogen konzentrisch umgebenden Teil (48) und das Dis­tanzstück (50) eine den konzentrischen Teil (44) des Stütz­hebels übergreifende Ausnehmung (51) besitzt.3. Contact arrangement according to claim 2, characterized in that the support lever (45) one the hinge pin (35) with a more than 180 ° circular arc concentrically surrounding part (48) and the spacer (50) one of the concentric part (44) of Recess lever overlapping recess (51).
EP86730163A 1985-11-07 1986-10-20 Contact arrangement with intermediate elements separating the contact levers from one another Expired EP0222686B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3539788 1985-11-07
DE19853539788 DE3539788A1 (en) 1985-11-07 1985-11-07 CONTACT ARRANGEMENT WITH CONTACT LEVER INTERMEDIATE LAYERS

Publications (2)

Publication Number Publication Date
EP0222686A1 true EP0222686A1 (en) 1987-05-20
EP0222686B1 EP0222686B1 (en) 1989-10-04

Family

ID=6285560

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86730163A Expired EP0222686B1 (en) 1985-11-07 1986-10-20 Contact arrangement with intermediate elements separating the contact levers from one another

Country Status (6)

Country Link
US (1) US4709127A (en)
EP (1) EP0222686B1 (en)
JP (1) JPH0752619B2 (en)
BR (1) BR8605497A (en)
DE (2) DE3539788A1 (en)
IN (1) IN164117B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2629255A1 (en) * 1988-03-24 1989-09-29 Terasaki Denki Kk CONTACT STRUCTURE FOR A SWITCHING DEVICE
EP0945883A2 (en) * 1998-03-23 1999-09-29 Eaton Corporation Circuit breaker with an anti-lift pivot handle
WO2002082481A1 (en) * 2001-04-04 2002-10-17 Siemens Aktiengesellschaft Switching contact arrangement for a power switch
EP2110825A2 (en) * 2008-04-15 2009-10-21 General Electric Company Contact assembly of circuit breaker

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6072136A (en) * 1998-05-07 2000-06-06 Eaton Corporation Electrical switching apparatus with modular operating mechanism for mounting and controlling large compression close spring
US6005206A (en) * 1998-05-07 1999-12-21 Eaton Corporation Electrical switching apparatus with improved contact arm carrier arrangement
DE10148947C1 (en) * 2001-09-28 2003-02-13 Siemens Ag Switch contact device for LV power switch has spacers between contact levers provided with support surfaces limiting movement of contact carrier and deformation of contact carrier bearing bolt
DE102004009873A1 (en) * 2004-02-26 2005-09-15 Siemens Ag Switching contact arrangement
US7368677B2 (en) * 2005-12-14 2008-05-06 Eaton Corporation Reverse bias hatchet reset spring
CN102782892B (en) 2010-03-12 2015-07-01 夏普株式会社 Light-emitting device manufacturing method, light-emitting device, lighting device, backlight, liquid-crystal panel, display device, display device manufacturing method, display device drive method and liquid-crystal display device
FR3122944B1 (en) * 2021-05-11 2023-11-10 Hager Electro Sas Mobile contact configured to be integrated into a circuit breaker

Citations (2)

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Publication number Priority date Publication date Assignee Title
US3402274A (en) * 1965-10-01 1968-09-17 Square D Co Contact structure for a power circuit breaker
US4242577A (en) * 1976-12-30 1980-12-30 Westinghouse Electric Corp. Circuit breaker having insulation barrier

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
US3402274A (en) * 1965-10-01 1968-09-17 Square D Co Contact structure for a power circuit breaker
US4242577A (en) * 1976-12-30 1980-12-30 Westinghouse Electric Corp. Circuit breaker having insulation barrier

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2629255A1 (en) * 1988-03-24 1989-09-29 Terasaki Denki Kk CONTACT STRUCTURE FOR A SWITCHING DEVICE
EP0945883A2 (en) * 1998-03-23 1999-09-29 Eaton Corporation Circuit breaker with an anti-lift pivot handle
EP0945883A3 (en) * 1998-03-23 2000-05-31 Eaton Corporation Circuit breaker with an anti-lift pivot handle
WO2002082481A1 (en) * 2001-04-04 2002-10-17 Siemens Aktiengesellschaft Switching contact arrangement for a power switch
US7068131B2 (en) 2001-04-04 2006-06-27 Siemens Aktiengesellschaft Switching contact arrangement for a power switch
EP2110825A2 (en) * 2008-04-15 2009-10-21 General Electric Company Contact assembly of circuit breaker
EP2110825A3 (en) * 2008-04-15 2011-03-02 General Electric Company Contact assembly of circuit breaker

Also Published As

Publication number Publication date
US4709127A (en) 1987-11-24
JPH0752619B2 (en) 1995-06-05
DE3539788A1 (en) 1987-05-14
IN164117B (en) 1989-01-14
BR8605497A (en) 1987-08-11
EP0222686B1 (en) 1989-10-04
JPS62113321A (en) 1987-05-25
DE3666109D1 (en) 1989-11-09

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