EP0897183A2 - High current switching device - Google Patents

High current switching device Download PDF

Info

Publication number
EP0897183A2
EP0897183A2 EP98114614A EP98114614A EP0897183A2 EP 0897183 A2 EP0897183 A2 EP 0897183A2 EP 98114614 A EP98114614 A EP 98114614A EP 98114614 A EP98114614 A EP 98114614A EP 0897183 A2 EP0897183 A2 EP 0897183A2
Authority
EP
European Patent Office
Prior art keywords
housing
switching
finger
contact
band
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
EP98114614A
Other languages
German (de)
French (fr)
Other versions
EP0897183A3 (en
EP0897183B1 (en
Inventor
Stefan Huwer
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.)
Ems Elektro Metall Schwanenmuehle GmbH
Original Assignee
Erico GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Erico GmbH filed Critical Erico GmbH
Publication of EP0897183A2 publication Critical patent/EP0897183A2/en
Publication of EP0897183A3 publication Critical patent/EP0897183A3/en
Application granted granted Critical
Publication of EP0897183B1 publication Critical patent/EP0897183B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5822—Flexible connections between movable contact and terminal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5822—Flexible connections between movable contact and terminal
    • H01H2001/5827—Laminated connections, i.e. the flexible conductor is composed of a plurality of thin flexible conducting layers

Definitions

  • the invention relates to a high-current switching device, which two contact plates to be connected to separate current conductors, at least one attached to one of the contact plates, movably mounted Shift finger and on the shift fingers and the other contact plate arranged contacts, each shift finger via a Strain band electrically connected to the one contact plate is.
  • the switching fingers of high-current switching devices are used for disconnection and closing the circuit, covering a switching path have, for power transmission, as a base for switch contacts, for switching over time via pre-contacts, for deleting Arcs arising during the switching process, for heat emission and for Recording of the mechanical resulting from the switching dynamics Stresses. Accordingly, the shift fingers of High current switching devices have high electrical and mechanical Resilience, small size and good electrical conductivity exhibit. In addition, the shift finger is inexpensive have to be manufactured.
  • Shift fingers are sufficient, have high-current switching devices in the generally several shift fingers. You can use one or Several of the switching fingers pre-contacts can be provided if this is for the respective switching operation is appropriate. In addition, at one or more of the shift fingers as well as on the counter contact plate Horns for deriving the arc that arises during the switching process to be appropriate.
  • the provided on the shift fingers and the counter contact plate Contact pieces can consist of special alloys. Their surface is mostly tinned or silver-plated.
  • the contact fingers themselves usually consist of copper, in particular (S) E-Cu F25-30, whereby the surface of which is silvered or tinned when the stretch bands or conductor are screwed on while the surface is bare is when the parts are connected by welding or soldering.
  • the known shift fingers contain bores and have incisions or peaks to absorb mechanical forces from actuators or feathers. At the force application points or Places with high bending moments result in loads that increase Deformations of the shift fingers lead when the mechanical strength of the material of the shift finger, namely the Copper, is reduced. Therefore, one must in the manufacture of the known shift finger make sure that only locally limited little heat is introduced into the material, namely copper, why expensive manufacturing processes such as percussion welding or Electron beam welding must be applied. Alternatively the contacts or stretch bands can also be screwed on what high assembly costs and also high contact resistance Has. In the latter case, however, defective parts can also be removed replace more easily.
  • the invention is based, with high-current switching devices the task the shift fingers simple and therefore inexpensive to be able to produce that this one hand a good electrical Conductivity and on the other hand also a high mechanical Have resilience.
  • the invention ensures that the power transmission provided current conductor, which in particular made of copper exist, practically not also for the inclusion of the mechanical Loads resulting from the switching operations and switching movements result, must be used. Accordingly, they can Elongation band forming, made of copper lamellae or strands connected at their ends by inexpensive welds become.
  • the mechanical loads for the power line unnecessary housing made of non-magnetizable stainless steel or VA steel.
  • the contacts to be provided on the shift fingers can, for example be brazed because of the power line provided stretch bands practically no mechanical loads must pick up and accordingly at the welding and soldering points can be mechanically weakened without the functionality of the To affect shift fingers.
  • the housing of the individual shift fingers is preferably in two parts trained and contains holes, has incisions or peaks for absorbing mechanical forces from actuators and Springs up.
  • the parts of the housing as well as those for adjusting the Springs provided for the shift finger are preferably punched out of sheet metal.
  • the stretch bands consist of a number of lamellas or strands joined together at their ends by pressure welding are connected.
  • the stretch bands can be narrow, single Fingers, or as a stretch band slit through one end be trained. At the free ends of this stretch band or these expansion bands are expediently brazed contact pieces appropriate.
  • the at the force application points or places with high bending moments occurring high loads are according to the invention in Comparison to copper high strength steel sheet such as VA material added.
  • the stretch bands made of copper strands or lamellae can accordingly at their ends by pressure welding or brazing be connected because of the associated heat influence resulting reduced strength of the stretch bands none causes significant disadvantages because of the mechanical strength is ensured by the housing provided according to the invention.
  • the laminated area of the Stretch band is extended by approximately the length of the shift finger, what a significant increase in the life of the stretch band and so that the switch as a whole results.
  • the switching device has two electrically conductive contact plates 1 and 2 for externally connecting the switching device to one here not shown current-transmitting electrical conductor, which means the switching device is to be interrupted or closed.
  • Switch fingers 3 are connected to the contact plate 1, which form the actual switching element. Each shift finger 3 is around one Swivel joint 4 pivotally mounted to the necessary switching movements to be able to execute.
  • An actuating element 5 for example a cylinder or engine, provides the necessary via a linkage 6 or an eccentric Switching movements of the shift finger 3.
  • a linkage 6 or an eccentric Switching movements of the shift finger 3 are several shift fingers provided, all shift fingers are operated with the same mechanism. However, a pre-contact function is for at least one switching finger due to a changed geometry on shift fingers or Actuation mechanism possible.
  • Each shift finger 3 consists of a housing 7 and an expansion band 8.
  • the stretch band 8 consists of a plurality of one Package of assembled lamellae 9 made of copper, which at their ends 10 and 11 are joined together by pressure welding while being the slats 9 between the two ends 10 and 11 otherwise free can move against each other to the function of the stretch band to be able to fulfill.
  • stretch band 8 or its slats 9 for the transmission serve the electrical current, that is part of the stretch band 8 enclosing housing 7 made of non-magnetizable sheet steel, preferably VA steel sheet, manufactured and takes over the switching operations resulting mechanical loads.
  • the stretch band 8 therefore does not need for the transmission of the mechanical Switching forces to be designed. So you can end 10 and 11 by simple and inexpensive heat treatment, for example by Pressure welding, combine into a compact package.
  • the solder layer 14 consists, for example, of silver solder L-AG 44 or L-AG 15 P.
  • a horn 15 is attached, the one the same horn 16 attached to the second contact plate 2 is opposite.
  • the horns 15 and 16 are used to derive the Switching arc.
  • the contact piece 13 of the shift finger 3 is an identical contact piece 17 opposite, which is attached to the second contact plate 2 and also consists of a special alloy.
  • a compression spring 18 presses the shift finger 3 towards the second Contact plate 2 so that the contact pieces 13 and 17 are firmly on top of each other if the contact should be closed.
  • the housing 7 consists of two bowl-shaped parts 19 and 20, such as 2 and 4 in particular. These bowl-shaped housing parts 19 and 20 are each formed from a stamped sheet metal blank and are spot welded together at their longitudinal edges 21, so that the housing 7 a the mechanical switching loads absorbing unit.
  • Fig. 3 shows that three shift fingers 3 formed from an expansion band 8 are, which is longitudinally slotted through two incisions 22 to the to form three shift fingers.
  • the rear end 10 of the three shift fingers or the stretch band is common to all three shift fingers, while the front ends 11 with the brazed to it Contacts 13 are separated from each other to the shift finger individually to be able to adjust.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of Transmission Device (AREA)
  • Manufacture Of Switches (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

The switching device has two contact plates (1,2) connected to current conductors with at least one movable switching finger (3) attached to one plate (1) and contacts (13,17) on the fingers and the other plate (2). Each finger is connected to the contact plate via an extension strip (8). Each switching finger has a housing (7) which takes up the mechanical load. The extension strip extends into the housing as far as the finger contact.

Description

Die Erfindung betrifft eine Hochstrom-Schaltvorrichtung, welche zwei an getrennte Stromleiter anzuschließende Kontaktplatten, wenigstens einen an einer der Kontaktplatten angebrachten, bewegbar gelagerten Schaltfinger und an den Schaltfingern und der anderen Kontaktplatte angeordnete Kontake aufweist, wobei jeder Schaltfinger über ein Dehnungsband elektrisch leitend mit der einen Kontaktplatte verbunden ist.The invention relates to a high-current switching device, which two contact plates to be connected to separate current conductors, at least one attached to one of the contact plates, movably mounted Shift finger and on the shift fingers and the other contact plate arranged contacts, each shift finger via a Strain band electrically connected to the one contact plate is.

Die Schaltfinger von Hochstrom-Schaltvorrichtungen dienen zum Trennen und Schließen des Stromkreises, wobei sie einen Schaltweg zurückzulegen haben, zur Stromübertragung, als Grundkörper für Schaltkontakte, zum zeitlich versetzten Schalten über Vorkontakte, zum Löschen von beim Schaltvorgang entstehenden Lichtbögen, zur Wärmeabgabe und zur Aufnahme der sich durch die Schaltdynamik ergebenden mechanischen Beanspruchungen. Demtentsprechend müssen die Schaltfinger von Hochstrom-Schaltvorrichtungen eine hohe elektrische und mechanische Belastbarkeit, eine geringe Baugröße und eine gute elektrische Leitfähigkeit aufweisen. Hierzu kommt, daß die Schaltfinger preisgünstig herzustellen sein müssen.The switching fingers of high-current switching devices are used for disconnection and closing the circuit, covering a switching path have, for power transmission, as a base for switch contacts, for switching over time via pre-contacts, for deleting Arcs arising during the switching process, for heat emission and for Recording of the mechanical resulting from the switching dynamics Stresses. Accordingly, the shift fingers of High current switching devices have high electrical and mechanical Resilience, small size and good electrical conductivity exhibit. In addition, the shift finger is inexpensive have to be manufactured.

Obwohl für den Schaltvorgang bereits ein verstellbarer bzw. beweglicher Schaltfinger ausreicht, weisen Hochstrom-Schaltvorrichtungen im allgemeinen mehrere Schaltfinger auf. Dabei können an einem oder mehreren der Schaltfinger Vorkontakte vorgesehen sein, wenn dies für den jeweiligen Schaltvorgang zweckmäßig ist. Außerdem können an einem oder mehreren der Schaltfinger sowie an der Gegen-Kontaktplatte Hörner zum Ableiten des beim Schaltvorgang entstehenden Lichtbogens angebracht sein.Although already an adjustable or movable for the switching process Shift fingers are sufficient, have high-current switching devices in the generally several shift fingers. You can use one or Several of the switching fingers pre-contacts can be provided if this is for the respective switching operation is appropriate. In addition, at one or more of the shift fingers as well as on the counter contact plate Horns for deriving the arc that arises during the switching process to be appropriate.

Die an den Schaltfingern und der Gegen-Kontaktplatte vorgesehenen Kontaktstücke können aus Sonderlegierungen bestehen. Deren Oberfläche ist meistens verzinnt oder versilbert. Die Kontaktfinger selbst bestehen üblicherweise aus Kupfer, Insbesondere (S)E-Cu F25-30, wobei deren Oberfläche versilbert oder verzinnt ist, wenn die Dehnungsbänder oder Leiter angeschraubt werden, während die Oberfläche blank ist, wenn die Teile durch Schweißen oder Löten verbunden sind.The provided on the shift fingers and the counter contact plate Contact pieces can consist of special alloys. Their surface is mostly tinned or silver-plated. The contact fingers themselves usually consist of copper, in particular (S) E-Cu F25-30, whereby the surface of which is silvered or tinned when the stretch bands or conductor are screwed on while the surface is bare is when the parts are connected by welding or soldering.

Die bekannten Schaltfinger enthalten Bohrungen und weisen Einschnitte oder Überhöhungen zur Aufnahme mechanischer Kräfte aus Betätigungselementen oder Federn auf. An den Krafteinleitungsstellen oder Stellen mit hohen Biegemomenten ergeben sich Belastungen, die zu Verformungen der Schaltfinger führen, wenn durch Wärmeeinleitung die mechanische Festigkeit des Materials der Schaltfinger, nämlich des Kupfers, verringert wird. Daher muß man bei der Herstellung der bekannten Schaltfinger darauf achten, daß nur örtlich begrenzt eine geringe Wärmeeinleitung in das Material, nämlich Kupfer, erfolgt, wozu teure Herstellungsverfahren wie Percussionsschweißen oder Elektronenstrahlschweißen angewendet werden müssen. Alternativ können die Kontakte oder Dehnungsbänder auch angeschraubt werden, was hohe Montagekosten und außerdem hohe Kontaktwiderstände zur Folge hat. Im letztgenannten Fall lassen sich allerdings defekte Teile auch leichter austauschen.The known shift fingers contain bores and have incisions or peaks to absorb mechanical forces from actuators or feathers. At the force application points or Places with high bending moments result in loads that increase Deformations of the shift fingers lead when the mechanical strength of the material of the shift finger, namely the Copper, is reduced. Therefore, one must in the manufacture of the known shift finger make sure that only locally limited little heat is introduced into the material, namely copper, why expensive manufacturing processes such as percussion welding or Electron beam welding must be applied. Alternatively the contacts or stretch bands can also be screwed on what high assembly costs and also high contact resistance Has. In the latter case, however, defective parts can also be removed replace more easily.

Der Erfindung liegt die Aufgabe zugrunde, bei Hochstrom-Schaltvorrichtungen die Schaltfinger einfach und damit preiswert derart herstellen zu können, daß diese einerseits eine gute elektrische Leitfähigkeit und andererseits auch eine hohe mechanische Beanspruchbarkeit aufweisen.The invention is based, with high-current switching devices the task the shift fingers simple and therefore inexpensive to be able to produce that this one hand a good electrical Conductivity and on the other hand also a high mechanical Have resilience.

Diese Aufgabe wird erfindungsgemäß mit einer Hochstrom-Schaltvorrichtung gelöst, welche die Merkmale des Patentanspruches 1 aufweist. Vorteilhalfte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.This object is achieved with a high-current switching device solved, which has the features of claim 1. Advantageous embodiments of the invention are the subject of Subclaims.

Durch die Erfindung ist gewährleistet, daß die für die Stromübertragung vorgesehenen Stromleiter, welche insbesondere aus Kupfer bestehen, praktisch nicht auch für die Aufnahme der mechanischen Belastungen, welche sich aus den Schaltvorgängen und Schaltbewegungen ergeben, genutzt werden müssen. Dementsprechend können die das Dehnungsband bildenden, aus Kupfer bestehenden Lamellen oder Litzen an deren Enden durch preiswerte Schweißungen untereinander verbunden werden. Die mechanischen Belastungen nimmt ein für die Stromleitung nicht erforderliches Gehäuse, das aus nicht magnetisierbarem rostfreien Stahl oder VA-Stahl besteht, auf.The invention ensures that the power transmission provided current conductor, which in particular made of copper exist, practically not also for the inclusion of the mechanical Loads resulting from the switching operations and switching movements result, must be used. Accordingly, they can Elongation band forming, made of copper lamellae or strands connected at their ends by inexpensive welds become. The mechanical loads for the power line unnecessary housing made of non-magnetizable stainless steel or VA steel.

Die an den Schaltfingern vorzusehenden Kontake können beispielsweise hartgelötet angebracht werden, weil die für die Stromleitung vorgesehenen Dehnungsbänder praktisch keine mechanischen Belastungen aufnehmen müssen und dementsprechend an den Schweiß- und Lötstellen mechanisch geschwächt werden können, ohne die Funktionsfähigkeit der Schaltfinger zu beeinträchtigen.The contacts to be provided on the shift fingers can, for example be brazed because of the power line provided stretch bands practically no mechanical loads must pick up and accordingly at the welding and soldering points can be mechanically weakened without the functionality of the To affect shift fingers.

Gemäß der Erfindung besteht das für die Stromübertragung vorgesehene Dehnungsband aus Kupfer, nämlich (S)E-Cu F25-30, während das den mechanisch beanspruchten Teil des Schaltfingers aufnehmende Gehäuse aus nicht rostendem, antimagnetischem Stahlblech wie VA-Stahl gebildet ist. Die Oberflächen der einzelnen Teile sind blank, wenn diese durch Schweißen oder Löten verbunden sind. Äußere Kontakte können oberflächlich verzinnt oder versilbert zum Anschluß an den jeweiligen Leiter sein.According to the invention there is that provided for the transmission of electricity Elongation band made of copper, namely (S) E-Cu F25-30, while the mechanically stressed part of the shift finger receiving housing Made of rustproof, non-magnetic steel sheet such as VA steel is formed. The surfaces of the individual parts are bare, though these are connected by welding or soldering. External contacts can be tin-plated or silver-plated on the surface for connection to the respective leader.

Das Gehäuse der einzelnen Schaltfinger ist vorzugsweise zweiteilig ausgebildet und enthält Bohrungen, weist Einschnitte oder Überhöhungen zur Aufnahme mechanischer Kräfte aus Betätigungselementen und Federn auf. Die Teile des Gehäuses sowie der für die Verstellung der Schaltfinger vorgesehenen Federn sind vorzugsweise aus Blech ausgestanzt. Die Dehnungsbänder bestehen aus einer Anzahl von Lamellen oder Litzen, die an ihren Enden durch Preßschweißung miteinander verbunden sind. Dabei können die Dehnungsbänder als schmale, einzelne Finger, oder als ein von einem Ende durchgeschlitztes Dehnungsband ausgebildet sein. An den freien Enden dieses Dehnungsbandes bzw. dieser Dehnungsbänder sind zweckmäßig hartgelötete Kontaktstücke angebracht. The housing of the individual shift fingers is preferably in two parts trained and contains holes, has incisions or peaks for absorbing mechanical forces from actuators and Springs up. The parts of the housing as well as those for adjusting the Springs provided for the shift finger are preferably punched out of sheet metal. The stretch bands consist of a number of lamellas or strands joined together at their ends by pressure welding are connected. The stretch bands can be narrow, single Fingers, or as a stretch band slit through one end be trained. At the free ends of this stretch band or these expansion bands are expediently brazed contact pieces appropriate.

Zum Zusammenbau werden die aus Blech bestehenden Teile und insbesondere die Hälften des Gehäuses der Schaltfinger um den aus lamelliertem Kupfer bestehenden Finger gelegt und an ihren Längskanten beispielsweise durch Buckelschweißen oder Punktschweißen miteinander verbunden.To assemble the parts made of sheet metal and especially the halves of the housing of the shift finger around the Laminated copper existing fingers and placed on their long edges for example by projection welding or spot welding connected with each other.

Die an den Krafteinleitungsstellen oder Stellen mit hohen Biegemomenten auftretenden hohen Belastungen werden erfindungsgemäß von dem im Vergleich zu Kupfer hochfesten Stahlblech wie VA-Material aufgenommen. Die aus Kupferlitzen oder -lamellen bestehenden Dehnungsbänder können dementsprechend an ihren Enden durch Preßschweißen oder Hartlöten verbunden werden, da durch die damit verbundene Wärmebeeinflussung entstehende verminderte Festigkeit der Dehnungsbänder keine wesentlichen Nachteile hervorruft, weil die mechanische Festigkeit durch das erfindungsgemäß vorgesehene Gehäuse gewährleistet ist.The at the force application points or places with high bending moments occurring high loads are according to the invention in Comparison to copper high strength steel sheet such as VA material added. The stretch bands made of copper strands or lamellae can accordingly at their ends by pressure welding or brazing be connected because of the associated heat influence resulting reduced strength of the stretch bands none causes significant disadvantages because of the mechanical strength is ensured by the housing provided according to the invention.

Durch die Erfindung ist außerdem der lamellierte Bereich des Dehnungsbandes um annähernd die Länge des Schaltfingers verlängert, was eine deutliche Erhöhung der Lebensdauer des Dehnungsbandes und damit des Schalters insgesamt zur Folge hat.The laminated area of the Stretch band is extended by approximately the length of the shift finger, what a significant increase in the life of the stretch band and so that the switch as a whole results.

In der Zeichnung ist ein Ausführungsbeispiel der erfindungsgemäßen Hochstrom-Schaltvorrichtung schematisch dargestellt, und zwar zeigt

Fig. 1
eine Seitenansicht der Schaltvorrichtung im Bereich eines Schaltfingers,
Fig. 2
einen Querschnitt des Schaltfingers im Bereich des Gehäuses,
Fig.3
eine Draufsicht auf drei nebeneinander angeordnete und an einem Ende untereinander verbundene Schaltfinger und
Fig. 4
einen Querschnitt eines Schaltfingers im Bereich des angelöteten Kontaktes.
In the drawing, an embodiment of the high-current switching device according to the invention is shown schematically, namely shows
Fig. 1
2 shows a side view of the switching device in the area of a switching finger,
Fig. 2
a cross section of the shift finger in the area of the housing,
Fig. 3
a plan view of three side by side and at one end interconnected shift fingers and
Fig. 4
a cross section of a switching finger in the area of the soldered contact.

Die Schaltvorrichtung hat zwei elektrisch leitfähige Kontaktplatten 1 und 2 zum äußeren Anschließen der Schaltvorrichtung an einen hier nicht gezeigten stromübertragenden elektrischen Leiter, der mittels der Schaltvorrichtung unterbrochen bzw. geschlossen werden soll.The switching device has two electrically conductive contact plates 1 and 2 for externally connecting the switching device to one here not shown current-transmitting electrical conductor, which means the switching device is to be interrupted or closed.

An die Kontaktplatte 1 sind Schaltfinger 3 angeschlossen, welche das eigentliche Schaltelement bilden. Jeder Schaltfinger 3 ist um ein Drehgelenk 4 schwenkbar gelagert, um die notwendigen Schaltbewegungen ausführen zu können.Switch fingers 3 are connected to the contact plate 1, which form the actual switching element. Each shift finger 3 is around one Swivel joint 4 pivotally mounted to the necessary switching movements to be able to execute.

Ein Betätigungselement 5, beispielsweise ein Zylinder oder Motor, sorgt über ein Gestänge 6 oder einen Exzenter für die notwendigen Schaltbewegungen des Schaltfingers 3. Sind mehrere Schaltfinger vorgesehen, werden alle Schaltfinger mit derselben Mechanik betätigt. Allerdings ist für wenigstens einen Schaltfinger eine Vorkontaktfunktion durch eine geänderte Geometrie an Schaltfingern oder Betätigungsmechanik möglich.An actuating element 5, for example a cylinder or engine, provides the necessary via a linkage 6 or an eccentric Switching movements of the shift finger 3. Are several shift fingers provided, all shift fingers are operated with the same mechanism. However, a pre-contact function is for at least one switching finger due to a changed geometry on shift fingers or Actuation mechanism possible.

Jeder Schaltfinger 3 besteht aus einem Gehäuse 7 und einem Dehnungsband 8. Das Dehnungsband 8 besteht aus einer Mehrzahl von zu einem Paket zusammengefügten Lamellen 9 aus Kupfer, die an ihren Enden 10 und 11 durch Preßschweißen miteinander verbunden sind, während sich die Lamellen 9 zwischen die beiden Enden 10 und 11 im übrigen frei gegeneinander bewegen können, um die Funktion des Dehnungsbandes erfüllen zu können.Each shift finger 3 consists of a housing 7 and an expansion band 8. The stretch band 8 consists of a plurality of one Package of assembled lamellae 9 made of copper, which at their ends 10 and 11 are joined together by pressure welding while being the slats 9 between the two ends 10 and 11 otherwise free can move against each other to the function of the stretch band to be able to fulfill.

Während das Dehnungsband 8 bzw. dessen Lamellen 9 für die Übertragung des elektrischen Stromes dienen, ist das einen Teil des Dehnungsbandes 8 umschließende Gehäuse 7 aus nicht magnetisierbarem Stahlblech, vorzugsweise VA-Stahlblech, hergestellt und übernimmt die sich durch die Schaltvorgänge ergebenden mechanischen Belastungen. Das Dehnungsband 8 braucht deshalb nicht für die Übertragung der mechanischen Schaltkräfte ausgelegt zu sein. Deshalb kann man seine Enden 10 und 11 durch einfache und preiswerte Warmbehandlung, beispielsweise durch Preßschweißen, zu einem kompakten Paket verbinden. During the stretch band 8 or its slats 9 for the transmission serve the electrical current, that is part of the stretch band 8 enclosing housing 7 made of non-magnetizable sheet steel, preferably VA steel sheet, manufactured and takes over the switching operations resulting mechanical loads. The stretch band 8 therefore does not need for the transmission of the mechanical Switching forces to be designed. So you can end 10 and 11 by simple and inexpensive heat treatment, for example by Pressure welding, combine into a compact package.

Während das Ende 10 des Dehnungsbandes 8 über ein Deckblech 12 mit der ersten Kontaktplatte 1 verschweißt ist, ist auf das andere Ende 11 ein Kontaktstück 13 aufgelötet. Wie Fig. 1 und 4 zeigen, ragt das aus einer Sonderlegierung bestehende Kontaktstück 13 aus dem Gehäuse 7 heraus. Die Lötschicht 14 besteht beispielsweise aus Silberlot L-AG 44 oder L-AG 15 P.While the end 10 of the expansion band 8 with a cover plate 12 the first contact plate 1 is welded to the other end 11 a contact piece 13 soldered. As shown in FIGS. 1 and 4, this protrudes made of a special alloy contact piece 13 from the housing 7 out. The solder layer 14 consists, for example, of silver solder L-AG 44 or L-AG 15 P.

Am äußeren Ende des Gehäuses 7 ist ein Horn 15 angebracht, dem ein an der zweiten Kontaktplatte 2 angebrachtes gleiches Horn 16 gegenüberliegt. Die Hörner 15 und 16 dienen zum Ableiten des sich beim Schaltvorgang bildenden Lichtbogens.At the outer end of the housing 7, a horn 15 is attached, the one the same horn 16 attached to the second contact plate 2 is opposite. The horns 15 and 16 are used to derive the Switching arc.

Dem Kontaktstück 13 des Schaltfingers 3 liegt ein gleiches Kontaktstück 17 gegenüber, das an der zweiten Kontaktplatte 2 befestigt ist und ebenfalls aus einer Sonderlegierung besteht.The contact piece 13 of the shift finger 3 is an identical contact piece 17 opposite, which is attached to the second contact plate 2 and also consists of a special alloy.

Eine Druckfeder 18 drückt den Schaltfinger 3 in Richtung zur zweiten Kontaktplatte 2, damit die Kontaktstücke 13 und 17 sich fest aufeinander legen, wenn der Kontakt geschlossen sein soll.A compression spring 18 presses the shift finger 3 towards the second Contact plate 2 so that the contact pieces 13 and 17 are firmly on top of each other if the contact should be closed.

Das Gehäuse 7 besteht aus zwei schalenförmigen Teilen 19 und 20, wie insbesondere Fig. 2 und 4 zeigen. Diese schalenförmigen Gehäuse-Teile 19 und 20 sind jeweils aus einem gestanzten Blechzuschnitt geformt und werden an ihren Längskanten 21 punktförmig miteinander verschweißt, so daß das Gehäuse 7 eine die mechanischen Schaltbelastungen aufnehmende Einheit bildet.The housing 7 consists of two bowl-shaped parts 19 and 20, such as 2 and 4 in particular. These bowl-shaped housing parts 19 and 20 are each formed from a stamped sheet metal blank and are spot welded together at their longitudinal edges 21, so that the housing 7 a the mechanical switching loads absorbing unit.

Fig. 3 zeigt, daß drei Schaltfinger 3 aus einem Dehnungsband 8 gebildet sind, das durch zwei Einschnitte 22 längsgeschlitzt ist, um die drei Schaltfinger zu bilden. Das hintere Ende 10 der drei Schaltfinger bzw. des Dehnungsbandes ist allen drei Schaltfingern gemeinsam, während die vorderen Enden 11 mit den daran hart angelöteten Kontakten 13 voneinander getrennt sind, um die Schaltfinger einzeln verstellen zu können. Fig. 3 shows that three shift fingers 3 formed from an expansion band 8 are, which is longitudinally slotted through two incisions 22 to the to form three shift fingers. The rear end 10 of the three shift fingers or the stretch band is common to all three shift fingers, while the front ends 11 with the brazed to it Contacts 13 are separated from each other to the shift finger individually to be able to adjust.

In Fig. 3 ist das den vorderen Teil jedes Dehnungsbandes aufnehmende Gehäuse 7 nicht dargestellt.In Fig. 3 that is the front part of each stretch band Housing 7 not shown.

Claims (7)

Hochstrom-Schaltvorrichtung, mit zwei an Stromleiter anzuschließenden Kontaktplatten (1;2), mit wenigstens einem an einer der Kontaktplatten (1) angebrachten, bewegbar gelagerten Schaltfinger (3) und mit an den Schaltfingern und der anderen Kontaktplatte (2) angeordneten Kontakten (13;17), wobei jeder Schaltfinger über ein Dehnungsband (8) mit der einen Kontaktplatte (1) verbunden ist,
dadurch gekennzeichnet,
daß jeder Schaltfinger (3) ein die mechanischen Belastungen aufnehmendes Gehäuse (7) aufweist und daß das Dehnungsband (8) sich in dem Gehäuse bis zu dem Kontakt (13) des Schaltfingers erstreckt.High-current switching device, with two contact plates (1; 2) to be connected to the conductor, with at least one movably mounted switching finger (3) attached to one of the contact plates (1) and with contacts (13) arranged on the switching fingers and the other contact plate (2) ; 17), each shift finger being connected to the one contact plate (1) via an expansion band (8),
characterized by
that each shift finger (3) has a housing (7) that receives the mechanical loads and that the expansion band (8) extends in the housing up to the contact (13) of the shift finger. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Dehnungsband (8) jedes Schaltfingers (3) aus Kupfer und das Gehäuse (7) aus rostfreiem antimagnetischem Stahl besteht.Apparatus according to claim 1, characterized in that the Elongation band (8) of each switching finger (3) made of copper and that Housing (7) consists of rustproof antimagnetic steel. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Dehnungsband (8) aus an beiden Enden (10;11) des Dehnungsbandes miteinander verschweißten Lamellen (9) oder Litzen besteht.Device according to claim 1 or 2, characterized in that the stretch band (8) at both ends (10; 11) of the stretch band there are welded lamellae (9) or strands. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Kontakt (13) jedes Schaltfingers (3) an das eine Ende (11) des Dehnungsbandes (8) angelötet ist.Device according to one of claims 1 to 3, characterized in that that the contact (13) of each switching finger (3) at one end (11) of the stretch band (8) is soldered. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das andere Ende (10) des Dehnungsbandes (8) an die erste Kontaktplatte (1) angelötet oder angeschweißt ist.Device according to one of claims 1 to 4, characterized in that that the other end (10) of the stretch band (8) to the first Contact plate (1) is soldered or welded on. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Gehäuse (7) aus zwei Stahlblechzuschnitten (19, 20) geformt ist, die dauerhaft miteinander verbunden sind. Device according to one of claims 1 to 5, characterized in that that the housing (7) from two sheet steel blanks (19, 20) is formed, which are permanently connected. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das Gehäuse (7) den vorderen bzw. freien Teil des Dehnungsbandes (8) umschließt und das Dehnungsband mit seinem hinteren Teil aus dem Gehäuse herausragt.Device according to one of claims 1 to 6, characterized in that that the housing (7) the front or free part of the Stretch band (8) encloses and the stretch band with his rear part protrudes from the housing.
EP98114614A 1997-08-13 1998-08-04 High current switching device Expired - Lifetime EP0897183B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19734968 1997-08-13
DE19734968A DE19734968A1 (en) 1997-08-13 1997-08-13 High current switching device

Publications (3)

Publication Number Publication Date
EP0897183A2 true EP0897183A2 (en) 1999-02-17
EP0897183A3 EP0897183A3 (en) 1999-09-01
EP0897183B1 EP0897183B1 (en) 2003-04-23

Family

ID=7838779

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98114614A Expired - Lifetime EP0897183B1 (en) 1997-08-13 1998-08-04 High current switching device

Country Status (2)

Country Link
EP (1) EP0897183B1 (en)
DE (2) DE19734968A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19932996C2 (en) * 1999-07-09 2002-07-18 Mitsubishi Electric Corp Ladder with flexible part
DE19964249C2 (en) * 1998-03-26 2002-11-21 Mitsubishi Electric Corp Flexible conductor used in vacuum environment
DE102006050767B3 (en) * 2006-10-27 2008-05-29 Moeller Gmbh Power supply line for movable contact arm of pole of low voltage switch i.e. circuit breaker, has conductor with end having end section, which is arranged for rail, runs parallel to rotating axis of arm, and fastened to rail at front side
EP2166550A1 (en) 2008-09-23 2010-03-24 General Electric Company Circuit breaker unitary current path
WO2017162392A1 (en) * 2016-03-22 2017-09-28 Siemens Aktiengesellschaft Phase conductor arrangement

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007048748A1 (en) * 2007-10-08 2009-04-09 Siemens Ag Contact lever i.e. single-way interruption contact lever, for use in circuit breaker utilized for opening and closing electric circuit, has flexible electric conductor directly and firmly connected to switch contact by soldering or welding
DE102013101080B9 (en) 2013-02-04 2014-12-24 Connex Gmbh Method for producing a current band
DE102022004752A1 (en) 2022-12-16 2023-03-02 Mercedes-Benz Group AG Component arrangement for electrical contacting and method for producing the component arrangement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1560308A (en) * 1923-10-19 1925-11-03 Gen Electric Electrical switch
US1680701A (en) * 1927-04-04 1928-08-14 Gen Electric Contact-connecter shunt
US4144554A (en) * 1976-12-08 1979-03-13 Square D Company Circuit breaker bolt-on flexible connector
DE4416104A1 (en) * 1994-04-19 1995-10-26 Siemens Ag Switch contact arrangement of an electrical circuit breaker

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1560308A (en) * 1923-10-19 1925-11-03 Gen Electric Electrical switch
US1680701A (en) * 1927-04-04 1928-08-14 Gen Electric Contact-connecter shunt
US4144554A (en) * 1976-12-08 1979-03-13 Square D Company Circuit breaker bolt-on flexible connector
DE4416104A1 (en) * 1994-04-19 1995-10-26 Siemens Ag Switch contact arrangement of an electrical circuit breaker

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19964249C2 (en) * 1998-03-26 2002-11-21 Mitsubishi Electric Corp Flexible conductor used in vacuum environment
DE19932996C2 (en) * 1999-07-09 2002-07-18 Mitsubishi Electric Corp Ladder with flexible part
DE102006050767B3 (en) * 2006-10-27 2008-05-29 Moeller Gmbh Power supply line for movable contact arm of pole of low voltage switch i.e. circuit breaker, has conductor with end having end section, which is arranged for rail, runs parallel to rotating axis of arm, and fastened to rail at front side
EP2166550A1 (en) 2008-09-23 2010-03-24 General Electric Company Circuit breaker unitary current path
CN101685726A (en) * 2008-09-23 2010-03-31 通用电气公司 Circuit breaker unitary current path
WO2017162392A1 (en) * 2016-03-22 2017-09-28 Siemens Aktiengesellschaft Phase conductor arrangement

Also Published As

Publication number Publication date
EP0897183A3 (en) 1999-09-01
DE59808017D1 (en) 2003-05-28
DE19734968A1 (en) 1999-02-18
EP0897183B1 (en) 2003-04-23

Similar Documents

Publication Publication Date Title
DE68929198T2 (en) High performance connector
DE19651513C2 (en) Method of connecting wires to a connector
DE19538767A1 (en) Switches with flexible conductor foil as a fixed contact and connection to connection contacts
EP0897183B1 (en) High current switching device
DE3530221A1 (en) MINIATURE SWITCH
EP2524384A1 (en) Electric contact element and method for producing an electric contact element
DE3524817C2 (en)
DE19537418A1 (en) Thermally controlled electrical switching device
WO1995028724A1 (en) Switch contact arrangement in an electric power switch
DE69029305T2 (en) Circuit breaker
DE8437085U1 (en) Contact spring for a bistable relay for switching high currents
EP0222685B1 (en) Contact arrangement with contact levers mounted in a holder in pivotal relationship to each other
DE3711666A1 (en) TEMPERATURE SWITCH
EP0360368A2 (en) Lever and abutting-contact arrangement for low-tension power switches with principal contacts and arcing contacts
EP0481993B1 (en) Contact device for a changer relay
DE2447319A1 (en) REED SWITCH AND REED CONTACT FOR THESE
DE10108858A1 (en) Switching contact arrangement
DE693539C (en) Contact arrangement for electrical switches, especially with arc extinguishing by flowing extinguishing agents
DE102012204371A1 (en) Contact arrangement and electrical switching device
DE2757650C3 (en) Contact device for electrical switches
DE69704025T2 (en) METHOD FOR PRODUCING AN ELECTROMECHANICAL RELAY
DE102021134004B3 (en) Method for producing a foil composite, foil composite and power electronic switching device herewith
DE967290C (en) Selector switch for telecommunications, in particular telephone systems
DE69202869T2 (en) Electric lamp.
EP0974151B1 (en) Switch

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: A2

Designated state(s): DE FI FR GB IT NL SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 19990923

AKX Designation fees paid

Free format text: DE FI FR GB IT NL SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: EMS ELEKTRO METALL SCHWANENMUEHLE GMBH

17Q First examination report despatched

Effective date: 20010618

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

Designated state(s): DE FI FR GB IT NL SE

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

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030423

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 20030423

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030423

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030423

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030423

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 59808017

Country of ref document: DE

Date of ref document: 20030528

Kind code of ref document: P

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

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030723

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20030423

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

Effective date: 20040126

EN Fr: translation not filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20141010

Year of fee payment: 17

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59808017

Country of ref document: DE

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 NON-PAYMENT OF DUE FEES

Effective date: 20160301