EP0897183B1 - High current switching device - Google Patents
High current switching device Download PDFInfo
- Publication number
- EP0897183B1 EP0897183B1 EP98114614A EP98114614A EP0897183B1 EP 0897183 B1 EP0897183 B1 EP 0897183B1 EP 98114614 A EP98114614 A EP 98114614A EP 98114614 A EP98114614 A EP 98114614A EP 0897183 B1 EP0897183 B1 EP 0897183B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- contact
- expansion joint
- switching
- switching device
- 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 - Lifetime
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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 movably mounted on one of the contact plates Shift finger and on the shift fingers and the other contact plate arranged contacts, each shift finger via a Expansion band electrically connected to 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, especially (S) E-Cu F25-30, whereby whose surface is silver-plated 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 result 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.
- 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.
- US 1,560,308 discloses a power switch with one serving as a sleeve Housing, inside of which a stretch band extends. At the Closing the switch will turn the housing against a mating contact pressed so that the housing both the mechanical loads of the Switching takes up, as well as the power line through the wall of the Serves through the contact closure, This is the result Problem that the case is both good mechanical, as well as good must have electrical properties, which compromises in the Material selection.
- the invention is based on the object in high-current switching devices 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 stresses on 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 to be brazed because of the power line provided stretch bands practically no mechanical loads have to pick up and accordingly at the welding and soldering points can be mechanically weakened without the functionality of the Affect shift finger.
- 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 shift finger provided springs 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 one at the force application points or places with high bending moments occurring high loads are according to the invention by the 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 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.
- 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 4 pivoted to make 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.
- All shift fingers are operated with the same mechanism. However, there is a pre-contact function 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 assembled lamellae 9 made of copper, which at their ends 10th and 11 are joined together by pressure welding while 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 transfer of 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 switching 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 when 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 welded to one another 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.
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Control Of Transmission Device (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Manufacture Of Switches (AREA)
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 movably mounted on one of the contact plates Shift finger and on the shift fingers and the other contact plate arranged contacts, each shift finger via a Expansion band electrically connected to 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, especially (S) E-Cu F25-30, whereby whose surface is silver-plated 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 result 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. alternative 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.
US 1,560,308 offenbart einen Stromschalter mit einem als Muffe dienenden Gehäuse, in dessen innerem sich ein Dehnungsband erstreckt. Beim Schlleßen des Schalters wird das Gehäuse gegen einen Gegenkontakt gedrückt, so dass das Gehäuse sowohl die mechanische Belastungen des Schaltvorgangs aufnimmt, als auch der Stromleitung durch die Wand des Gehäuses hindurch beim Kontaktschluss dient, Daraus ergibt sich das Problem, dass das Gehäuse sowohl gute mechanische, als auch gute elektrische Eigenschaften haben muss, was Kompromisse bei der Werkstoffauswahl mit sich bringt.US 1,560,308 discloses a power switch with one serving as a sleeve Housing, inside of which a stretch band extends. At the Closing the switch will turn the housing against a mating contact pressed so that the housing both the mechanical loads of the Switching takes up, as well as the power line through the wall of the Serves through the contact closure, This is the result Problem that the case is both good mechanical, as well as good must have electrical properties, which compromises in the Material selection.
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 on the object in high-current switching devices 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
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 stresses on 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 to be brazed because of the power line provided stretch bands practically no mechanical loads have to pick up and accordingly at the welding and soldering points can be mechanically weakened without the functionality of the Affect shift finger.
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 housing accommodating mechanically stressed part of the shift finger Made of rustproof, anti-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 PreßschweiBung 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 for the adjustment of the The shift finger provided springs 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 in particular the halves of the housing of the shift finger around 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 one at the force application points or places with high bending moments occurring high loads are according to the invention by the 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 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.
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.
- 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,
- Figure 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
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
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
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
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
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
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
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
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
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
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
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
Claims (7)
- High current switching device comprising a pair of contact plates (1; 2) to be connected to a current conductor, including at least one mobile switching finger (3) connected to one of said contact plates (1), further including contacts (13; 17) connected to said switching finger and the other contact plate (2), wherein said switching finger is connected by means of an electrically conductive expansion joint (8) to the first contact plate (1), and wherein the switching finger (3) comprises a housing (7) for taking up the mechanical loads generated by the switching operation and wherein the expansion joint (8) extends through said housing,
characterized in that
said expansion joint (8) extends in said housing (7) at least toward to the contact (13) provided on the switching finger and is connected electrically conductive to said one contact (13), wherein said contact (13) projects from said housing and is guided through the wall of said housing. - High current switching device as defined by claim 1,
characterized in that
the expansion joint (8) of the switching finger (3) is made of copper and that the housing (7) consists of a stainless non-magnetic steel. - High current switching device as defined by either of claims 1 or 2,
characterized in that
said expansion joint (8) consists of lamellas (9) or strand conductors welded to both ends (10, 11) of said expansion joint. - High current switching device as defined by either of claims 1 to 3,
characterized in that
the contact (13) of the switching finger (3) is soldered to one end (11) of the expansion joint (8). - High current switching device as defined by either of claims 1 to 4,
characterized in that
the other end (10) of the expansion joint (8) is soldered or welded to the first contact plate (19). - High current switching device as defined by either of claims 1 to 5,
characterized in that
said housing (7) consists of two steel plate sections (19, 20) firmly connected to each other. - High current switching device as defined by either of claims 1 to 6,
characterized in that
said housing (7) encloses the front or free portion of the expansion joint (8) and that the rear portion of the expansion joint projects from said housing.
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 EP0897183A2 (en) | 1999-02-17 |
| EP0897183A3 EP0897183A3 (en) | 1999-09-01 |
| EP0897183B1 true 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 (2)
| 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 |
| DE102022004752A1 (en) | 2022-12-16 | 2023-03-02 | Mercedes-Benz Group AG | Component arrangement for electrical contacting and method for producing the component arrangement |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19932996C2 (en) * | 1999-07-09 | 2002-07-18 | Mitsubishi Electric Corp | Ladder with flexible part |
| SG87815A1 (en) * | 1998-03-26 | 2002-04-16 | Mitsubishi Electric Corp | Flexible conductor and switchgear made with thereof |
| 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 |
| US20100072044A1 (en) * | 2008-09-23 | 2010-03-25 | General Electric Company | Circuit breaker unitary current path |
| DE102013101080B9 (en) * | 2013-02-04 | 2014-12-24 | Connex Gmbh | Method for producing a current band |
| DE102016204668A1 (en) * | 2016-03-22 | 2017-09-28 | Siemens Aktiengesellschaft | Phase conductor arrangement |
Family Cites Families (4)
| 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 |
| DE4416104C2 (en) * | 1994-04-19 | 2000-07-13 | Siemens Ag | Switch contact arrangement of an electrical circuit breaker |
-
1997
- 1997-08-13 DE DE19734968A patent/DE19734968A1/en not_active Withdrawn
-
1998
- 1998-08-04 EP EP98114614A patent/EP0897183B1/en not_active Expired - Lifetime
- 1998-08-04 DE DE59808017T patent/DE59808017D1/en not_active Expired - Lifetime
Cited By (2)
| 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 |
| DE102022004752A1 (en) | 2022-12-16 | 2023-03-02 | Mercedes-Benz Group AG | Component arrangement for electrical contacting and method for producing the component arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0897183A3 (en) | 1999-09-01 |
| EP0897183A2 (en) | 1999-02-17 |
| DE19734968A1 (en) | 1999-02-18 |
| DE59808017D1 (en) | 2003-05-28 |
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