EP0456140A2 - Contact device for vacuum circuit breaker - Google Patents

Contact device for vacuum circuit breaker Download PDF

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Publication number
EP0456140A2
EP0456140A2 EP91107265A EP91107265A EP0456140A2 EP 0456140 A2 EP0456140 A2 EP 0456140A2 EP 91107265 A EP91107265 A EP 91107265A EP 91107265 A EP91107265 A EP 91107265A EP 0456140 A2 EP0456140 A2 EP 0456140A2
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EP
European Patent Office
Prior art keywords
pin
contact
arrangement according
slots
cylinder wall
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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.)
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Application number
EP91107265A
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German (de)
French (fr)
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EP0456140A3 (en
Inventor
Günter Pilsinger
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Calor Emag AG
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Calor Emag AG
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Publication date
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Publication of EP0456140A2 publication Critical patent/EP0456140A2/en
Publication of EP0456140A3 publication Critical patent/EP0456140A3/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
    • H01H33/6642—Contacts; Arc-extinguishing means, e.g. arcing rings having cup-shaped contacts, the cylindrical wall of which being provided with inclined slits to form a coil

Definitions

  • the invention relates to a contact arrangement according to the preamble of claim 1.
  • the object of the invention is to provide a support that is easy to manufacture and assemble, that is capable of transmitting high contact pressures and yet only manages with a small cross section.
  • the pins which predominantly run in the bores, can be subjected to a considerable surface pressure in the axial direction of the contact piece.
  • the hole is easy to make and the pin receives a secure stop on the bottom of the blind hole for transmitting axial forces.
  • the pin provided that it consists of a metallic or metallized ceramic material, can simply be fixed by soldering in the web parts opposite the blind hole with a through hole.
  • the pin is expediently guided up to the end face. It then lies against the contact element placed on the end wall and does not need to be fastened further in the adjacent web part. Pins made of ceramic or ceramic composite material are particularly suitable for this arrangement, which then do not need to be specially prepared for soldering.
  • solder foil already inserted between the contact element and the forehead of the cylinder wall will ensure that the adjacent web part is also soldered.
  • two or more pins may be required per slot length. It is essential that a pin is placed near the start of the slot on the end face of the cylinder wall, since this area is most sensitive to axial compression. When using ceramic pencils, it is advisable to use only those with increased fracture toughness. These are usually made of ceramic composite materials according to subclaims 8 and 9.
  • the pot contact pieces 11 and 12 consist essentially of the pot bottom 13, 14, in which the power supply lines 15, 16 are inserted.
  • the cylinder walls 17, 18 acting as contact carriers are molded onto the base of the pot.
  • Contact elements 20, 21 in the form of disks or annular disks are placed on the end face 19 thereof. Their material differs from that of the cylinder walls because it is directly exposed to the switching arc. It therefore has favorable properties with regard to tear-off current, contact resistance, tendency to sweat and burning.
  • the remaining parts of the contact arrangement generally consist of highly degassed copper material.
  • Slits 22 are made in the cylinder walls 17, 18, which begin at the end face 19 and are led into the pot bottom 13, 14 or its vicinity. They are inclined to the axis of rotation 23 of the contact arrangement or the contact pieces. This creates webs 24, 25 for the current flow, which always contains a directional component inclined with respect to the axis of rotation 23. In the course of the webs shown in the opposing pot contact pieces 11, 12, an arc which arises between the contact elements will form a current loop, the magnetic force of which causes the arc to rotate between the contact elements.
  • the number of webs and their inclination to the axis of rotation can be selected as desired. When they are switched on, they are subjected to very large mechanical forces in the axial direction. In addition to compression, these forces also cause the individual webs to bend to a certain extent towards their side which overhangs the bottom of the pot.
  • the cylinder walls 17, 18 shorten in the axial direction and the webs short.
  • a bore 26, ie a total of four bores is made in the cylinder walls 17, 18 for each slot 22. They are brought down from the end faces 19 into the cylinder walls, in such a way that the web part close to the end 19 is pierced and the underlying web part, located beyond the slot 22, is provided with a blind hole. There should no longer be a slot in the axial direction between the blind hole and the pot base 13, 14.
  • the blind hole can also end in the bottom of the pot itself.
  • the bores are generally located on an average circular diameter of the cylinder wall (see FIG. 2).
  • Cylindrical pins 27 are inserted into the bores. They penetrate the web part or parts that are located between the forehead 19 and the web part with the blind hole and extend to the bottom of the blind hole. On the other hand, they are flush with the forehead 19 of the cylinder walls. After the contact elements 20, 21 are soldered onto the forehead 19, the pins 27 are secured against falling out and fixed in place. This type of placement has the advantage that the pins do not necessarily have to be soldered together, i. that is, there is no need for metallization when using ceramic pins.
  • two pins can be used for each slot with appropriately long bars.
  • a pin must be placed near the start of the slot.
  • the other can be used near the end of the slot.
  • Stainless steel with a sufficiently low electrical conductivity is a suitable metallic material for the pins. This material is solderable, and the pin is included in the soldered connection of the contact elements 20, 21 with the corresponding cylinder wall without further measures.
  • the line shunt created by the metallic pins introduced into the webs is of no importance and therefore negligible due to the low electrical conductivity of the metallic material with regard to the function of the contact.
  • Metallic materials e.g. B. stainless steel, have the advantage over the ceramic materials that they are cheaper and do not break under mechanical overload.
  • Ceramic materials can be upgraded to composite materials by incorporating reinforcing components such as Y2O3 (yttrium oxide), TiC (titanium carbide), TiN (titanium nitride), ZrO2 (zirconium oxide).
  • Y2O3 with dispersed SiC (silicon carbide) fibers has proven to be a particularly suitable material due to its particularly high fracture toughness.
  • Ceramic materials have the advantage over metallic materials that, at least in the virgin state, they do not create a shunt between the individual webs.

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  • Ceramic Products (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

A contact device for electrical vacuum circuit breakers is fitted with cup-shaped contacts which are arranged coaxially with respect to one another and whose cylindrical wall, which is connected to the cup base and acts as a contact support, is split into webs by slots running obliquely with respect to the axis of rotation of the contact, and the end of the cylindrical wall is covered with a disc-shaped or annular contact element, and the slots are bridged by means of a bracket which is a poor conductor in comparison with the contact support. In order to obtain a bracket which has a small cross-section, satisfies all the requirements and is easy to produce, it is provided for said bracket to be constructed from a cylindrical pin (27) which is inserted in a hole (26) in the cylindrical wall (17, 18), which hole extends approximately parallel to the axis of rotation (23) of the contact (11, 12), the pin (27) - seen in the insertion direction - engaging in a blind hole in the web part of that side of the slot or slots (22) and being fixed in the opposite web part, in which it engages first, mechanically bridging the slot or slots. <IMAGE>

Description

Die Erfindung betrifft eine Kontaktanordnung gemäß Oberbegriff des Anspruches 1.The invention relates to a contact arrangement according to the preamble of claim 1.

Derartige Kontaktanordnungen für Vakuumschaltröhren sind bereits bekannt, insbesondere aus der DE-OS 34 11 784. Um eine Stauchung der Zylinderwand durch den Kontaktdruck zu verhindern, hat man dort eine Stütze in Form eines Kreiszylinders bzw. eines hohlen Kegelstumpfes im Inneren des Topfkontaktstückes - an dessen Zylinderwand anliegend, plaziert. Eine solche Konstruktion erfordert eine aufwendige Herstellung und ergibt Probleme wegen der unterschiedlichen Ausdehnungskoeffizienten der Materialien. Schließlich wird durch die relativ massive Stütze ein nicht unerheblicher Stromanteil geführt werden, der den Stegen zur Bildung eines Magnetfeldes entzogen wird.Such contact arrangements for vacuum interrupters are already known, in particular from DE-OS 34 11 784. In order to prevent compression of the cylinder wall by the contact pressure, there is a support in the form of a circular cylinder or a hollow truncated cone inside the pot contact piece - on the other Cylinder wall in contact, placed. Such a construction requires complex production and causes problems due to the different expansion coefficients of the materials. Finally, a not inconsiderable amount of current will be guided through the relatively massive support, which will be removed from the webs to form a magnetic field.

Bei der Kontaktanordnung der DE-OS 29 47 562 hat man eine Stütze in Form eines zylindrischen Ringes in eine umlaufende Stirnnut der Kontaktträgerwand eingesetzt. Um eine Stromführung durch die Stütze zu unterbinden, soll diese gegenüber der Trägerwand isoliert sein, was einen zusätzlichen Aufwand darstellt.In the contact arrangement of DE-OS 29 47 562, a support in the form of a cylindrical ring has been inserted into a circumferential end groove of the contact carrier wall. In order to prevent current from flowing through the support, it should be insulated from the support wall, which represents an additional outlay.

Die Aufgabe der Erfindung besteht darin, eine Stütze zu schaffen, die sich einfach herstellen und montieren läßt, hohe Kontaktdrücke zu übertragen in der Lage ist und dennoch nur mit geringem Querschnitt auskommt.The object of the invention is to provide a support that is easy to manufacture and assemble, that is capable of transmitting high contact pressures and yet only manages with a small cross section.

Die Lösung gelingt mit den kennzeichnenden Merkmalen des Anspruches 1.The solution is achieved with the characterizing features of claim 1.

Die überwiegend in den Bohrungen verlaufenden Stifte sind in Axialrichtung des Kontaktstückes mit einer erheblichen Flächenpressung belastbar. Die Bohrung läßt sich leicht herstellen und am Sacklochboden erhält der Stift einen sicheren Anschlag zur Übertragung von Axialkräften. In den dem Sackloch jeweils gegenüberliegenden Stegteilen mit einer Durchgangsbohrung, kann der Stift, sofern er aus einem metallischen oder metallisiertem keramischen Werkstoff besteht, einfach durch Lötung festgesetzt werden.The pins, which predominantly run in the bores, can be subjected to a considerable surface pressure in the axial direction of the contact piece. The hole is easy to make and the pin receives a secure stop on the bottom of the blind hole for transmitting axial forces. The pin, provided that it consists of a metallic or metallized ceramic material, can simply be fixed by soldering in the web parts opposite the blind hole with a through hole.

Ist die Bohrung von der Stirnseite aus in die Zylinderwand eingebracht, so wird der Stift zweckmäßigerweise bis zur Stirnseite geführt. Er liegt dann an dem auf die Stirnwand aufgesetzten Kontaktelement an und braucht nicht weiter im angrenzenden Stegteil befestigt sein. Für diese Anordnung eignen sich besonders Stifte aus Keramik bzw. Keramikverbundmaterial, die dann für eine Lötung nicht besonders präpariert zu werden brauchen.If the bore is made in the cylinder wall from the end face, the pin is expediently guided up to the end face. It then lies against the contact element placed on the end wall and does not need to be fastened further in the adjacent web part. Pins made of ceramic or ceramic composite material are particularly suitable for this arrangement, which then do not need to be specially prepared for soldering.

Bei Verwendung von Stahlstiften wird die ohnehin zwischen dem Kontaktelement sowie der Stirn der Zylinderwand eingelegte Lötfolie für ein Mitverlöten im angrenzenden Stegteil Sorge tragen.If steel pins are used, the solder foil already inserted between the contact element and the forehead of the cylinder wall will ensure that the adjacent web part is also soldered.

Soll der Stift (bei entsprechender Steigung der Schlitze) mehrere Schlitze überbrücken, so stellt dies kein Problem dar.If the pin is to bridge several slots (with a corresponding slope of the slots), this is not a problem.

Bei entsprechender Länge der Schlitze können pro Schlitzlänge zwei oder mehrere Stifte erforderlich werden. Wesentlich dabei ist, daß ein Stift in der Nähe des Schlitzbeginnes an der Stirnseite der Zylinderwand plaziert wird, da dieser Bereich für eine axiale Stauchung am empfindlichsten ist. Bei Verwendung von Keramikstiften empfiehlt es sich, nur solche mit einer erhöhten Bruchzähigkeit einzusetzen. Diese sind in der Regel aus Keramikverbundwerkstoffen entsprechend den Unteransprüchen 8 und 9 gefertigt.Depending on the length of the slots, two or more pins may be required per slot length. It is essential that a pin is placed near the start of the slot on the end face of the cylinder wall, since this area is most sensitive to axial compression. When using ceramic pencils, it is advisable to use only those with increased fracture toughness. These are usually made of ceramic composite materials according to subclaims 8 and 9.

Die Erfindung wird anhand eines Ausführungsbeispieles näher erläutert.The invention is explained in more detail using an exemplary embodiment.

Es zeigen:

Figur 1
eine Kontaktanordnung mit zwei Topfkontaktstücken in Einschaltstellung,
Figur 2
eine Draufsicht auf ein Topfkontaktstück bei abgenommenem Kontaktelement.
Show it:
Figure 1
a contact arrangement with two pot contact pieces in the switch-on position,
Figure 2
a plan view of a pot contact piece with the contact element removed.

Die Topfkontaktstücke 11 bzw. 12 bestehen im wesentlichen aus dem Topfboden 13, 14, in dem die Stromzuleitungen 15, 16 eingesetzt sind. Am Topfboden sind jeweils die als Kontaktträger fungierenden Zylinderwände 17, 18 angeformt. Auf deren Stirnseite 19 sind Kontaktelemente 20, 21 in Form von Scheiben bzw. Ringscheiben aufgesetzt. Deren Material unterscheidet sich von dem der Zylinderwände, da es dem Schaltlichtbogen unmittelbar ausgesetzt ist. Es besitzt daher bezüglich Abreißstrom, Kontaktwiderstand, Schweißneigung und Abbrand günstige Eigenschaften. Die übrigen Teile der Kontaktanordnung bestehen in der Regel aus hochentgastem Kupferwerkstoff.The pot contact pieces 11 and 12 consist essentially of the pot bottom 13, 14, in which the power supply lines 15, 16 are inserted. The cylinder walls 17, 18 acting as contact carriers are molded onto the base of the pot. Contact elements 20, 21 in the form of disks or annular disks are placed on the end face 19 thereof. Their material differs from that of the cylinder walls because it is directly exposed to the switching arc. It therefore has favorable properties with regard to tear-off current, contact resistance, tendency to sweat and burning. The remaining parts of the contact arrangement generally consist of highly degassed copper material.

In die Zylinderwände 17, 18 sind Schlitze 22 eingebracht, die an der Stirnseite 19 beginnen und bis in den Topfboden 13, 14 bzw. dessen Nähe geführt sind. Sie sind zur Rotationsachse 23 der Kontaktanordnung bzw. der Kontaktstücke geneigt. Dadurch entstehen Stege 24, 25 für den Stromfluß, der immer eine gegenüber der Rotationsachse 23 geneigte Richtungskomponente enthält. Bei dem dargestellten Verlauf der Stege in den sich gegenüberstehenden Topfkontaktstücken 11, 12 wird ein zwischen den Kontaktelementen entstehender Lichtbogen eine Stromschleife bilden, deren magnetische Kraft den Lichtbogen zwischen den Kontaktelementen rotieren läßt.Slits 22 are made in the cylinder walls 17, 18, which begin at the end face 19 and are led into the pot bottom 13, 14 or its vicinity. They are inclined to the axis of rotation 23 of the contact arrangement or the contact pieces. This creates webs 24, 25 for the current flow, which always contains a directional component inclined with respect to the axis of rotation 23. In the course of the webs shown in the opposing pot contact pieces 11, 12, an arc which arises between the contact elements will form a current loop, the magnetic force of which causes the arc to rotate between the contact elements.

Die Anzahl der Stege sowie deren Neigung zur Rotationsachse ist beliebig wählbar. Beim Einschalten werden sie mit sehr großen mechanischen Kräften in axialer Richtung belastet. Diese Kräfte bewirken neben einer Stauchung auch eine gewisse Verbiegung der einzelnen Stege zu ihrer über den Topfboden überhängenden Seite hin. Dabei verkürzen sich die Zylinderwände 17, 18 in axialer Richtung und die Stege schließen sich kurz. Zur Verhinderung dieser schädlichen Auswirkungen ist in die Zylinderwandungen 17, 18 jeweils pro Schlitz 22 eine Bohrung 26, also insgesamt vier Bohrungen, eingebracht. Sie werden von den Stirnseiten 19 aus in die Zylinderwandungen niedergebracht, derart, daß der der Stirn 19 nahegelegene Stegteil durchbohrt und der darunter liegende, jenseits des Schlitzes 22 gelegene Stegteil mit einem Sackloch versehen ist. Zwischen dem Sackloch und dem Topfboden 13, 14 sollte sich in axialer Richtung kein Schlitz mehr befinden. Das Sackloch kann auch im Topfboden selbst enden.The number of webs and their inclination to the axis of rotation can be selected as desired. When they are switched on, they are subjected to very large mechanical forces in the axial direction. In addition to compression, these forces also cause the individual webs to bend to a certain extent towards their side which overhangs the bottom of the pot. The cylinder walls 17, 18 shorten in the axial direction and the webs short. For prevention of these damaging effects, a bore 26, ie a total of four bores, is made in the cylinder walls 17, 18 for each slot 22. They are brought down from the end faces 19 into the cylinder walls, in such a way that the web part close to the end 19 is pierced and the underlying web part, located beyond the slot 22, is provided with a blind hole. There should no longer be a slot in the axial direction between the blind hole and the pot base 13, 14. The blind hole can also end in the bottom of the pot itself.

Die Bohrungen befinden sich im allgemeinen auf einem mittleren Kreisdurchmesser der Zylinderwandung (siehe Figur 2).The bores are generally located on an average circular diameter of the cylinder wall (see FIG. 2).

In die Bohrungen sind zylindrische Stifte 27 eingesetzt. Sie durchdringen jeweils den bzw. die Stegteile, die zwischen der Stirn 19 sowie dem Stegteil mit dem Sackloch sich befinden und reichen bis zum Grund des Sackloches. Sie schließen andererseits mit der Stirn 19 der Zylinderwände bündig ab. Nach Auflötung der Kontaktelemente 20, 21 auf die Stirn 19 sind die Stifte 27 gegen herausfallen gesichert und fest fixiert. Diese Art der Plazierung hat den Vorteil, daß die Stifte nicht unbedingt eine Lötverbindung eingehen müssen, d. h., es kann auf eine Metallisierung bei Verwendung von Keramikstiften verzichtet werden.Cylindrical pins 27 are inserted into the bores. They penetrate the web part or parts that are located between the forehead 19 and the web part with the blind hole and extend to the bottom of the blind hole. On the other hand, they are flush with the forehead 19 of the cylinder walls. After the contact elements 20, 21 are soldered onto the forehead 19, the pins 27 are secured against falling out and fixed in place. This type of placement has the advantage that the pins do not necessarily have to be soldered together, i. that is, there is no need for metallization when using ceramic pins.

Gleichwohl kann es zweckmäßig sein, die Stifte auf jeden Fall in dem stirnnahen Stegteil mit einzulöten. Dies hat den Vorteil, daß Bohrungs- und Stiftlänge mit größeren Toleranzen wählbar sind. Wesentlich ist, daß die Stifte die Kontaktkraft übertragen und unzulässige Stauchungen bzw. Verbiegungen der Stege verhindern.Nevertheless, it may be expedient to solder the pins in the web part close to the face in any case. This has the advantage that the bore and pin length can be selected with larger tolerances. It is essential that the pins transmit the contact force and prevent impermissible upsetting or bending of the webs.

Für größere Kontaktstückdurchmesser können bei entsprechend langen Stegen pro Schlitz auch zwei Stifte eingesetzt werden. Dabei ist in jedem Falle ein Stift in der Nähe des Schlitzanfanges zu plazieren. Der andere kann in der Nähe des Schlitzendes eingesetzt werden.For larger contact piece diameters, two pins can be used for each slot with appropriately long bars. In any case, a pin must be placed near the start of the slot. The other can be used near the end of the slot.

Als metallischer Werkstoff für die Stifte bietet sich Edelstahl mit ausreichend geringer elektrischer Leitfähigkeit an. Dieser Werkstoff ist lötfähig, und der Stift wird ohne weitere Maßnahmen in die Lötverbindung der Kontaktelemente 20, 21 mit der entsprechenden Zylinderwand mit einbezogen. Der durch die in die Stege eingebrachten metallischen Stifte entstehende Leitungsnebenschluß, ist aufgrund der geringen elektrischen Leitfähigkeit des metallischen Werkstoffes in Bezug auf die Funktion des Kontaktes ohne Bedeutung und somit vernachlässigbar. Metallische Werkstoffe, z. B. Edelstahl, haben gegenüber den keramischen Werkstoffen den Vorteil, daß sie kostengünstiger sind und bei mechanischer Überbelastung nicht brechen.Stainless steel with a sufficiently low electrical conductivity is a suitable metallic material for the pins. This material is solderable, and the pin is included in the soldered connection of the contact elements 20, 21 with the corresponding cylinder wall without further measures. The line shunt created by the metallic pins introduced into the webs is of no importance and therefore negligible due to the low electrical conductivity of the metallic material with regard to the function of the contact. Metallic materials, e.g. B. stainless steel, have the advantage over the ceramic materials that they are cheaper and do not break under mechanical overload.

Bei Verwendung von keramischen Werkstoffen für die Stifte sollte insbesondere auf Keramikverbundwerkstoffe mit einer hohen Bruchzähigkeit zurückgegriffen werden. Keramische Werkstoffe können durch Einlagerung von Verstärkungskomponenten wie Y₂O₃ (Yttriumoxyd), TiC (Titancarbid), TiN (Titannitrid), ZrO₂ (Zirkonoxyd) zu Verbundwerkstoffen ertüchtigt werden. Als besonders geeignetes Material hat sich Al₂O₃ mit dispers eingelagerten SiC (Siliciumcarbid)-Fasern aufgrund seiner besonders hohen Bruchzähigkeit herausgestellt.When using ceramic materials for the pins, ceramic composite materials with a high fracture toughness should be used in particular. Ceramic materials can be upgraded to composite materials by incorporating reinforcing components such as Y₂O₃ (yttrium oxide), TiC (titanium carbide), TiN (titanium nitride), ZrO₂ (zirconium oxide). Al₂O₃ with dispersed SiC (silicon carbide) fibers has proven to be a particularly suitable material due to its particularly high fracture toughness.

Keramische Werkstoffe haben gegenüber metallischen Werkstoffen den Vorteil, daß sie, zumindest im jüngfräulichen Zustand, zwischen den einzelnen Stegen keinen Nebenschluß erzeugen.Ceramic materials have the advantage over metallic materials that, at least in the virgin state, they do not create a shunt between the individual webs.

Claims (9)

Kontaktanordnung für elektrische Vakuumschaltröhren, mit koaxial zueinander angeordneten Topfkontaktstücken, deren an den Topfboden sich anschließende, als Kontaktträger fungierende Zylinderwand durch zur Rotationsachse des Kontaktstückes schräg verlaufende Schlitze in Stege (Strompfade) aufgeteilt und die Stirn der Zylinderwand mit einem scheiben- bzw. ringförmigen Kontaktelement abgedeckt ist und daß die Schlitze mittels einer, gegenüber dem Kontaktträger schlechter leitenden Stütze überbrückt sind, dadurch gekennzeichnet, daß die Stütze von mindestens einem zylindrischen Stift (27) gebildet ist, der in eine annähernd parallel zur Rotationsachse (23) des Kontaktstückes (11, 12) sich erstreckenden Bohrung (26) der Zylinderwand (17, 18) eingesetzt ist, wobei der Stift (27) - in Einschieberichtung gesehen - in dem jenseits der bzw. des Schlitzes (22) gelegenen Stegteil in ein Sackloch eingreift und in dem dem Sackloch in axialer Richtung gegenüberliegenden Stegteil, in das er zuerst eingreift - den bzw. die Schlitze mechanisch überbrückend - festgesetzt ist.Contact arrangement for electrical vacuum interrupters, with pot contact pieces arranged coaxially to one another, the cylinder wall of which adjoins the pot bottom and acts as a contact carrier and is divided into webs (current paths) by slots that run obliquely to the axis of rotation of the contact piece and the front of the cylinder wall is covered with a disk-shaped or ring-shaped contact element and that the slots are bridged by means of a poorly conductive support compared to the contact carrier, characterized in that the support is formed by at least one cylindrical pin (27) which is in an approximately parallel to the axis of rotation (23) of the contact piece (11, 12 ) extending bore (26) of the cylinder wall (17, 18) is inserted, the pin (27) - seen in the direction of insertion - engages in the blind part beyond the or the slot (22) in a blind hole and in the blind hole in the axial direction opposite web part, i n that it engages first - the one or the slots mechanically bridging - is fixed. Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß der Stift von der Stirnseite (19) der Zylinderwand (17, 18) aus eingesetzt und das Sackloch sich in einem topfbodennahen Stegteil befindet.Arrangement according to claim 1, characterized in that the pin is inserted from the end face (19) of the cylinder wall (17, 18) and the blind hole is located in a web part near the pot bottom. Anordnung nach Anspruch 2, dadurch gekennzeichnet, daß der Stift (27) bündig mit der Stinrseite (19) der Zylinderwand (17, 18) abschließt.Arrangement according to claim 2, characterized in that the pin (27) is flush with the stinger side (19) of the cylinder wall (17, 18). Anordnung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Stift (27) in dem Stegteil, in dem er zuerst eingreift, durch Lötung festgesetzt ist.Arrangement according to one of claims 1 to 3, characterized in that the pin (27) is fixed by soldering in the web part in which it engages first. Anordnung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß zwei oder mehrere Stifte (27) pro Schlitzlänge eingesetzt sind, von denen einer in unmittelbarer Nähe des Schlitzanfanges an der Stirnseite (19) der Zylinderwand (17, 18) plaziert ist.Arrangement according to one of claims 1 to 4, characterized in that two or more pins (27) are inserted per slot length, one of which is placed in the immediate vicinity of the slot beginning on the end face (19) of the cylinder wall (17, 18). Anordnung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß ein Edelstahlstift verwendet ist.Arrangement according to one of claims 1 to 5, characterized in that a stainless steel pin is used. Anordnung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß ein Stift (27) aus Keramik verwendet ist.Arrangement according to one of claims 1 to 5, characterized in that a ceramic pin (27) is used. Anordnung nach Anspruch 7, dadurch gekennzeichnet, daß der Stift (27) aus einem Keramikverbundwerkstoff besteht, wobei in die Keramik Verstärkungskomponenten wie Y₂O₃, TiC, TiN, ZrO₂ eingelagert sind.Arrangement according to claim 7, characterized in that the pin (27) consists of a ceramic composite material, reinforcing components such as Y₂O₃, TiC, TiN, ZrO₂ being embedded in the ceramic. Anordnung nach Anspruch 7, dadurch gekennzeichnet, daß in das Material des Keramikstiftes SiC-Fasern eingelagert sind.Arrangement according to claim 7, characterized in that SiC fibers are embedded in the material of the ceramic pin.
EP19910107265 1990-05-11 1991-05-04 Contact device for vacuum circuit breaker Withdrawn EP0456140A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4015135 1990-05-11
DE19904015135 DE4015135C2 (en) 1990-05-11 1990-05-11 Contact pieces for vacuum switches

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EP0456140A2 true EP0456140A2 (en) 1991-11-13
EP0456140A3 EP0456140A3 (en) 1992-04-08

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EP19910107265 Withdrawn EP0456140A3 (en) 1990-05-11 1991-05-04 Contact device for vacuum circuit breaker

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EP (1) EP0456140A3 (en)
DE (2) DE4015135C2 (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN109671590B (en) * 2018-12-20 2020-04-10 西安交通大学 Contact with cathode spot trap structure contact blade, direct-current vacuum arc-extinguishing chamber and direct-current vacuum contactor
CN112397341A (en) * 2019-08-12 2021-02-23 伊顿智能动力有限公司 Coil-type axial magnetic field contact assembly for vacuum circuit breaker

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US3622724A (en) * 1970-02-24 1971-11-23 Gen Electric Vacuum-type circuit interrupter having contacts with improved arc-revolving means
GB2038098A (en) * 1978-11-30 1980-07-16 Westinghouse Electric Corp Vacuum-type circuit interrupters
US4839481A (en) * 1988-02-16 1989-06-13 Cooper Industries, Inc. Vacuum interrupter

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DE3009925C2 (en) * 1980-03-14 1984-03-08 Siemens AG, 1000 Berlin und 8000 München Contact piece for an electrical vacuum switch
DE3302595A1 (en) * 1983-01-27 1984-08-02 Calor-Emag Elektrizitäts-Aktiengesellschaft, 4030 Ratingen Contact arrangement for vacuum switches
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DE3426323A1 (en) * 1984-07-17 1986-01-30 Siemens AG, 1000 Berlin und 8000 München Contact arrangement for vacuum switches
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Publication number Priority date Publication date Assignee Title
US3622724A (en) * 1970-02-24 1971-11-23 Gen Electric Vacuum-type circuit interrupter having contacts with improved arc-revolving means
DE2015528A1 (en) * 1970-04-01 1971-10-21 Siemens Ag Vacuum switch
GB2038098A (en) * 1978-11-30 1980-07-16 Westinghouse Electric Corp Vacuum-type circuit interrupters
US4839481A (en) * 1988-02-16 1989-06-13 Cooper Industries, Inc. Vacuum interrupter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109671590B (en) * 2018-12-20 2020-04-10 西安交通大学 Contact with cathode spot trap structure contact blade, direct-current vacuum arc-extinguishing chamber and direct-current vacuum contactor
CN112397341A (en) * 2019-08-12 2021-02-23 伊顿智能动力有限公司 Coil-type axial magnetic field contact assembly for vacuum circuit breaker

Also Published As

Publication number Publication date
DE9007343U1 (en) 1991-12-19
EP0456140A3 (en) 1992-04-08
DE4015135A1 (en) 1991-11-14
DE4015135C2 (en) 1995-07-27

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