EP2704172A1 - Rotor for an electrical switch - Google Patents

Rotor for an electrical switch Download PDF

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Publication number
EP2704172A1
EP2704172A1 EP13179355.6A EP13179355A EP2704172A1 EP 2704172 A1 EP2704172 A1 EP 2704172A1 EP 13179355 A EP13179355 A EP 13179355A EP 2704172 A1 EP2704172 A1 EP 2704172A1
Authority
EP
European Patent Office
Prior art keywords
rotor
contact bridge
spring pins
pairs
plates
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
EP13179355.6A
Other languages
German (de)
French (fr)
Other versions
EP2704172B1 (en
Inventor
Pawel Biedunkiewicz
Jörg-Uwe DAHL
Christoph Weber
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.)
Siemens AG
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Siemens AG
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Filing date
Publication date
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Publication of EP2704172A1 publication Critical patent/EP2704172A1/en
Application granted granted Critical
Publication of EP2704172B1 publication Critical patent/EP2704172B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/36—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having only two operative positions, e.g. relatively displaced by 180 degrees
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H01H1/205—Details concerning the elastic mounting of the rotating bridge in the rotor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H01H73/045—Bridging contacts

Definitions

  • Switching devices for switching electric currents typically comprise at least one contact system and further housing conversions.
  • the contact system forms an electrical switch and serves to switch electrical currents.
  • One class of switching devices are the so-called "power switches,” which typically can switch currents of 100A and more.
  • These circuit breakers comprise a housing in which the individual phases of the currents are switched. The individual phases of the currents can be housed in Polkassetten, which are enclosed by its own housing. In the Polkassetten moving and fixed contacts are housed, which can be mechanically separated or brought together, for switching off or turning on the currents. When separating movable and fixed contact of a polar cartridge, an arc is formed, which is typically extinguished in a so-called "quenching chamber”. Also, circuit breakers are known which contain no Polkassetten and accommodate moving and fixed contacts in their housing.
  • Double-break contact systems with a rotatory structure are very often prone to asymmetries.
  • the asymmetries may be due to the tolerance of the components or unbalanced consumption during operation.
  • the contact pieces of the contact bridge can burn off asymmetrically.
  • These asymmetries lead to unequal contact forces and contact resistance at the contact points.
  • Previously known solutions to avoid these asymmetries provide a compensation possibility by the movable contact bridge as well as by a floating arrangement of the switching shaft or the rotor in the polar cassette.
  • the rotor for an electrical switch comprises a rotor housing and a rotatably mounted contact bridge, which comprises two movable contacts, wherein by rotation of the rotor, the two movable contacts with two fixed contacts of an electrical switch can cooperate to close or Opening a circuit.
  • the rotatably mounted contact bridge is movably mounted in the rotor housing in a direction perpendicular to the direction of the contact bridge in its closed position.
  • the rotatably mounted contact bridge is movably mounted in the rotor housing in a direction perpendicular to the axis of rotation of the contact bridge.
  • the rotor for an electrical switch further comprises a first plate inside the rotor, which is arranged substantially parallel to the contact bridge, two pairs of first and second spring pins and two pairs of first and second springs.
  • the first ends of the respective spring pairs are attached to the first spring pins and the first spring pins lie on the contact bridge and the first plate, the second ends of the respective spring pairs are attached to the second spring pins and the second spring pins on the first plate, so that in the closing position of the rotor a minimum contact pressure of the movable contacts of the contact bridge is ensured on the fixed contacts, wherein the second spring pins are movably mounted in the rotor.
  • the rotor for an electrical switch further comprises a second plate in the interior of the rotor housing, which is arranged substantially parallel to the contact bridge and the first plate, wherein the first spring pins rest on the contact bridge and the first and second plate, and wherein the second ends of the respective pairs of springs are secured to the second spring pins and the second spring pins are secured to the first and second plates.
  • the two pairs of first and second springs are designed as tension springs.
  • the central recess may be formed as a slot along a direction perpendicular to the direction of the contact bridge in the closed position.
  • the two plates are connected to each other with a connecting tube and the connecting tube is guided through the central recess of the contact bridge.
  • the rotor may further comprise a guide pin as the axis of rotation of the rotor, which is guided by the connecting tube.
  • the diameter of the guide pin may be so small compared to the inner diameter of the connecting tube that the guide pin can be mounted eccentrically in the connecting tube.
  • the second spring pins are each mounted in a notch of the rotor. This notch may be formed so that the second spring pins are movable in a direction perpendicular to Direction of the contact bridge are mounted in the closed position.
  • the second spring pins are floatingly mounted in the rotor.
  • the two plates may be floatingly mounted in the rotor.
  • the inventive rotor may be part of an electrical switch which additionally comprises two fixed contacts, the rotor cooperating with the two fixed contacts for closing or opening a circuit
  • a rotor housing 110 for an electrical switch and a rotatably mounted contact bridge 200 which comprises two movable contacts 210, 220, are shown.
  • the rotatably mounted contact bridge 200 is movably mounted in the rotor housing 110 in a direction perpendicular to the direction of the contact bridge 200 in its closed position.
  • the rotatably mounted contact bridge 200 is arranged movably in the direction of the arrow in the rotor housing 110.
  • the rotatably mounted contact bridge 200 may be mounted in a suspension 300, which in turn is movably mounted in the rotor housing 110.
  • the rotatably mounted contact bridge 200 is also movably mounted in the rotor housing 110 in a direction perpendicular to the axis of rotation of the contact bridge 200.
  • a rotor 100 for an electrical switch is shown.
  • the rotor 100 includes a rotor housing 110 and a rotatably mounted contact bridge 200.
  • On the contact bridge 200 two movable contacts 210, 220 are mounted.
  • the two movable contacts 210, 220 may cooperate with two fixed contacts 2100, 2200 of an electrical switch to close or open a circuit.
  • the rotor 100 further comprises a first and a second plate 310, 320, which are located inside the rotor 100 and which are arranged substantially parallel to the contact bridge 200. Between these two plates 310, 320, the rotatably mounted contact bridge 200 is arranged. In the following, the suspension mechanism of the contact bridge 200 in the rotor 100 will be explained in more detail.
  • the rotor 100 for this purpose comprises two pairs of first and second spring pins 610, 710; 620, 720 and two pairs of first and second springs 410, 420; 510, 520.
  • the first ends of the respective spring pairs 410, 420; 510, 520 are attached to the first spring pins 610, 710.
  • These first spring pins 610, 710 rest on the contact bridge 200 and also on the first and second plates 310, 320.
  • the second ends of the respective spring pairs 410, 420; 510, 520 are attached to the second spring pins 620, 720.
  • These in turn are attached to the plates 310, 320, so that in the closed position of the rotor 100, a minimum contact pressure of the movable contacts 210, 220 of the contact bridge 200 is ensured on the fixed contacts 2100, 2200.
  • the rotatably mounted contact bridge 200 is by the train of the first and second spring pairs 410, 420; 520, 520 on the first spring pins 610, 710 as shown in FIG Fig. 2 turned counterclockwise.
  • the movable contact 220 is downward and the movable contact 210 upward as shown in FIG Fig. 2 moved, thereby ensuring a minimal contact pressure on the fixed contacts.
  • the second spring pins 620, 720 fixed to the first and second plates 310, 320 are movably supported in the rotor 100.
  • Fig. 3 is the movable mounting of the second spring pins 620, 720 explained in more detail.
  • the second spring pins 620, 720 are each mounted in a notch 150 of the rotor 100. Together with the mounting of the contact bridge 200 in the electrical switch by the guide pin 800, which is guided through a central recess 350 of the two first and second plates 310, 320 and the contact bridge 200, allow the notches 150 that the contact bridge 200 in the closed position is movable perpendicular to this direction. According to the presentation of the Fig. 3 This means that the contact bridge 200 with the movable contacts 210, 220 can move up and down and thereby tolerances - can be compensated - for example, in the contact pieces of the contact bridge 200.
  • the central recess 350 is formed as an elongated hole, which is formed along a direction perpendicular to the direction of the contact bridge 200 in the closed position.
  • Fig. 4 is the rotor 100 with the contact bridge 200 and the first and second spring pins 610, 710; 620, 720.
  • Fig. 5 shows the rotor 100 in a different sectional view than Fig. 2 . 3 or 4 ,
  • Fig. 6 shows once again the rotor 100 with the notch 150 in the rotor, which allows the contact bridge 200 are movably mounted together with the two plates 310, 320 in the rotor 100.
  • the second spring pins 620, 720 are thus floatingly mounted in the rotor 100.
  • the two plates 310, 320 are also floatingly mounted in the rotor 100.
  • the two pairs of first and second springs 410, 420; 510, 520 are formed in this embodiment as tension springs.
  • the pairs of first and second springs 410, 420; 510, 520 extend from the first spring pins 610, 710 to the second spring pins 620, 720 in parallel with the two plates 310, 320.
  • the first and second springs 410, 420; 510, 520 outside of the two plates 310, 320.
  • Fig. 7 a force-erosion diagram is shown. Because the floatingly mounted second spring pins 620, 720 allow movement of the rotatably mounted contact bridge 200, regardless of the degree of erosion of the contact pieces, an equal contact force is applied to both movable contacts 210, 220.
  • connection tube 850 is guided through the central recess 350 of the contact bridge 200.
  • a guide pin 800 serves as a rotation axis of the rotor 100.
  • the guide pin 800 is passed through the connection tube 850.
  • the diameter of the guide pin 800 may be made small relative to the inner diameter of the connecting tube 850 such that the guide pin 800 can be eccentrically mounted in the connecting tube 850.
  • FIG. 9A is the guide pin 800 in the middle of the connecting tube 850, so there is no compensation movement.
  • Figs. 9B and 9C differently, here the guide pin 800 is mounted eccentrically in the connecting tube 850 and the contact bridge 200 balances floating asymmetries of the structure.
  • the rotor 100 is shown with a first plate 310. This is located in the interior of the rotor 100 and is arranged substantially parallel to the contact bridge 200.
  • the contact bridge 200 has a central recess in which the first plate 310 is inserted.
  • First plate 310 and contact bridge 200 are rotatable about the guide pin 800.
  • the contact bridge 200 may also be formed in two pieces with a recess for the first plate 310th
  • Fig. 10B are the two pairs of first and second spring pins 610, 710; 620, 720 and the two pairs of first and second springs 410, 420; 510, 520.
  • the first ends of the respective spring pairs 410, 420; 510, 520 are attached to the first spring pins 610, 710 and the first spring pins 610, 710 are on the contact bridge 200 and the first plate 310 on.
  • the second ends of the respective spring pairs 410, 420; 510, 520 are fixed to the second spring pins 620, 720 and the second spring pins 620, 720 on the first plate 310, so that in the closed position of the rotor 100, a minimum contact pressure of the movable contacts 210; 220 of the contact bridge 200 on the fixed contacts 2100; 2200 is ensured, wherein the second spring pins 620, 720 are movably mounted in the rotor housing.
  • the rotor 100 according to the invention may be part of an electrical switch, which additionally comprises two fixed contacts 2100, 2200.
  • the rotor 100 with the two movable contacts 210, 220 may cooperate with the two fixed contacts 2100, 2200 to close or open a circuit.
  • the contact bridge is usually stored stationary in the rotor.
  • a compensation of different spring lengths with different tolerances of the components or different lever arms due to a different erosion of the contacts is inventively by a floating mounting of the plates 310, 320, which carry the contact bridge 200 compensated.
  • the lateral plates arranged to the contact bridge are connected to each other.
  • the contact bridge rotates coaxially around the tube and is inevitably moved during the compensation movement of the inner rotor. Without this coupling, the inevitability and thus the reproducibility of the compensation result are missing. That leads to that In the case of fast closing operations of a circuit breaker, the contact bridge can not join the full compensation movement of the plates, and as a result system-related unbalanced contact forces can occur, eg due to friction.

Abstract

The rotor has rotor housing (110) and a rotatably mounted contact bridge unit (200) that is provided with two movable contact portions (210,220). The movable contact portions are cooperated with fixed contact portions by rotation of main portion to open or close an electric circuit. The contact bridge unit is movably mounted in rotor housing in a direction perpendicular to direction of rotational axis in closed position.

Description

Schaltgeräte zum Schalten elektrischer Ströme umfassen typischerweise mindestens ein Kontaktsystem und weitere Gehäuseumbauten. Das Kontaktsystem bildet einen elektrischen Schalter und dient dem Schalten elektrischer Ströme. Eine Klasse von Schaltgeräten sind die sogenannten "Leistungsschalter", die typischerweise Ströme von 100 A und mehr schalten können. Diese Leistungsschalter umfassen ein Gehäuse, in dem die einzelnen Phasen der Ströme geschaltet werden. Die einzelnen Phasen der Ströme können in Polkassetten untergebracht sein, die von einem eigenen Gehäuse eingefasst werden. In den Polkassetten sind Beweg- und Festkontakte untergebracht, die mechanisch getrennt beziehungsweise zusammengebracht werden können, zum Aus- beziehungsweise Einschalten der Ströme. Beim Trennen von Beweg- und Festkontakt einer Polkassette entsteht ein Lichtbogen, der typischerweise in einer sogenannten "Löschkammer" gelöscht wird. Ebenfalls sind Leistungsschalter bekannt, die keine Polkassetten enthalten und die in ihrem Gehäuse Beweg- und Festkontakte unterbringen.Switching devices for switching electric currents typically comprise at least one contact system and further housing conversions. The contact system forms an electrical switch and serves to switch electrical currents. One class of switching devices are the so-called "power switches," which typically can switch currents of 100A and more. These circuit breakers comprise a housing in which the individual phases of the currents are switched. The individual phases of the currents can be housed in Polkassetten, which are enclosed by its own housing. In the Polkassetten moving and fixed contacts are housed, which can be mechanically separated or brought together, for switching off or turning on the currents. When separating movable and fixed contact of a polar cartridge, an arc is formed, which is typically extinguished in a so-called "quenching chamber". Also, circuit breakers are known which contain no Polkassetten and accommodate moving and fixed contacts in their housing.

In Leistungsschaltern ist zur Erzielung einer guten Strombegrenzung notwendig, eine hohe Bogenspannung schnell aufzubauen. Dies gelingt mit sogenannten "Doppelunterbrechern", die die Schaltstrecke zweimal unterteilen und so im Kurzschlussfall zwei Lichtbögen gleichzeitig erzeugen. Die durch den Lichtbogen erzeugte Bogenspannung ist nun in der gleichen Zeiteinheit doppelt vorhanden, was die Strombegrenzung gegenüber einfach unterbrechenden Systemen verbessert. Typischerweise sind bei sogenannten "Doppelunterbrechern" zwei elektrische Kontakte auf einer drehbar gelagerten Kontaktbrücke angeordnet, die die Bewegkontakte darstellen. Die beiden Bewegkontakte wirken mit zwei Festkontakten des elektrischen Schalters zusammen zum Schließen oder Öffnen des Stromkreises.In circuit breakers, to achieve good current limitation, it is necessary to quickly build up a high arc voltage. This is achieved with so-called "double breakers", which divide the switching path twice and thus produce two arcs simultaneously in the event of a short circuit. The arc voltage generated by the arc is now duplicated in the same unit of time, which improves the current limit over systems that break simply. Typically, in so-called "double breakers" two electrical contacts are arranged on a rotatably mounted contact bridge, which represent the moving contacts. The two moving contacts cooperate with two fixed contacts of the electrical switch to close or open the circuit.

In der DE 692 09 972 T2 wird ein aus einpoligen Einheiten bestehender Schutzschalter beschrieben. Bei diesem Schutzschalter wird die Kontaktbrücke jeder Polkassette freihängend in einem Schaltwellenabschnitt montiert, und die starre mechanische Verbindung zwischen den einzelnen Schaltwellenabschnitten erfolgt durch zwei parallel zur Schaltwelle sowie in Bezug zu deren Drehachse exzentrisch angeordneten Stangen. Dieser Aufbau gewährleistet das Aufbringen der Kontaktkraft, das dynamische Kontakt-Öffnen im Kurzschluss des elektrischen Schalters und die Ankopplung an einen Schaltmechanismus zum Öffnen und Schließen des elektrischen Schalters mit einer Handhabe.In the DE 692 09 972 T2 a circuit breaker consisting of unipolar units is described. In this circuit breaker, the contact bridge of each polar cassette is mounted freely suspended in a switching shaft section, and the rigid mechanical connection between the individual switching shaft sections is effected by two parallel to the switching shaft and with respect to the axis of rotation eccentrically arranged rods. This structure ensures the application of the contact force, the dynamic contact opening in the short circuit of the electrical switch and the coupling to a switching mechanism for opening and closing the electric switch with a handle.

In der DE 693 04 374 T2 wird ein Schutzschalter mit Pressformgehäuse mit Verzögerung am Bewegungsende der Kontaktbrückenabstoßung offenbart. Die Kontaktbrücke wird im Rotorgehäuse ohne Achse gelagert. Dazu umfasst die Kontaktbrücke Zugfedern, die dazu dienen, in der Einschaltstellung des Leistungsschalters einen von der Kontaktbrücke auf die feststehenden Kontakte ausgeübten Kraftdruck zu gewährleisten und gleichzeitig eine Drehung der Kontaktbrücke unter Einwirkung der elektrodynamischen Kräfte in Richtung der Abstoß-Ausschaltstellung zu ermöglichen.In the DE 693 04 374 T2 discloses a circuit breaker with mold housing with delay at the end of travel of the contact bridge rejection. The contact bridge is mounted in the rotor housing without an axle. For this purpose, the contact bridge tension springs, which serve to ensure in the closed position of the circuit breaker exerted by the contact bridge on the fixed contacts force pressure and at the same time to allow rotation of the contact bridge under the action of electrodynamic forces in the direction of the push-off position.

Doppeltunterbrechende Kontaktsysteme mit rotatorischem Aufbau sind sehr häufig anfällig gegen Unsymmetrien. Die Unsymmetrien können begründet sein in der Toleranzlage der Bauteile beziehungsweise im unsymmetrischen Abbrand während des Betriebs. Beispielsweise können die Kontaktstücke der Kontaktbrücke unsymmetrisch abbrennen. Diese Unsymmetrien führen zu ungleichen Kontaktkräften und Kontaktwiderständen an den Kontaktstellen. Bisher bekannte Lösungsmöglichkeiten zur Vermeidung dieser Unsymmetrien sehen eine Ausgleichsmöglichkeit durch die bewegliche Kontaktbrücke als auch durch eine schwimmende Anordnung der Schaltwelle beziehungsweise des Rotors in der Polkassette vor.Double-break contact systems with a rotatory structure are very often prone to asymmetries. The asymmetries may be due to the tolerance of the components or unbalanced consumption during operation. For example, the contact pieces of the contact bridge can burn off asymmetrically. These asymmetries lead to unequal contact forces and contact resistance at the contact points. Previously known solutions to avoid these asymmetries provide a compensation possibility by the movable contact bridge as well as by a floating arrangement of the switching shaft or the rotor in the polar cassette.

Es ist Aufgabe der Erfindung, einen Rotor für einen elektrischen Schalter zur Verfügung zu stellen mit einer alternativen Lösung zur Kompensation von Unsymmetrien seiner Kontaktbrücke.It is an object of the invention to provide a rotor for an electrical switch with an alternative solution for the compensation of asymmetries of its contact bridge.

Die Aufgabe wird gelöst gemäß Anspruch 1. Der Rotor für einen elektrischen Schalter umfasst ein Rotorgehäuse und eine drehbar gelagerte Kontaktbrücke, welche zwei bewegliche Kontakte umfasst, wobei durch Drehung des Rotors die zwei beweglichen Kontakte mit zwei feststehenden Kontakten eines elektrischen Schalters zusammenwirken können zum Schließen oder Öffnen eines Stromkreises. Die drehbar gelagerte Kontaktbrücke ist im Rotorgehäuse in einer Richtung senkrecht zur Richtung der Kontaktbrücke in ihrer Schließ-Stellung beweglich gelagert. Vorteilhaft hierbei ist, dass die Kontaktkräfte besser als bei herkömmlichen Lösungen ausbalanciert sind, dies auch bei großen Unsymmetrien durch Toleranzen und Abbrand. Es werden unsymmetrische Kontaktwiderstände reduziert, und es wird sichergestellt, dass es zu einem gleichen Abbrand auf der Lastwie auf der Anschlussseite des elektrischen Schalters kommt.The object is achieved according to claim 1. The rotor for an electrical switch comprises a rotor housing and a rotatably mounted contact bridge, which comprises two movable contacts, wherein by rotation of the rotor, the two movable contacts with two fixed contacts of an electrical switch can cooperate to close or Opening a circuit. The rotatably mounted contact bridge is movably mounted in the rotor housing in a direction perpendicular to the direction of the contact bridge in its closed position. The advantage here is that the contact forces are better balanced than in conventional solutions, even with large asymmetries by tolerances and burnup. Unbalanced contact resistances are reduced and it is ensured that the same burnup occurs on the load as on the connection side of the electrical switch.

In einer Ausgestaltung ist die drehbar gelagerte Kontaktbrücke im Rotorgehäuse in einer Richtung senkrecht zur Drehachse der Kontaktbrücke beweglich gelagert ist.In one embodiment, the rotatably mounted contact bridge is movably mounted in the rotor housing in a direction perpendicular to the axis of rotation of the contact bridge.

In einer weiteren Ausgestaltung umfasst der Rotor für einen elektrischen Schalter des Weiteren eine erste Platte im Innern des Rotors, welche im Wesentlichen parallel zur Kontaktbrücke angeordnet ist, zwei Paare an ersten und zweiten Federstiften und zwei Paare an ersten und zweiten Federn. Die ersten Enden der jeweiligen Federpaare sind an den ersten Federstiften befestigt und die ersten Federstifte liegen auf der Kontaktbrücke und der ersten Platte auf, die zweiten Enden der jeweiligen Federpaare sind an den zweiten Federstiften befestigt sowie die zweiten Federstifte an der ersten Platte, so dass in der Schließ-Stellung des Rotors ein minimaler Kontaktdruck der beweglichen Kontakte der Kontaktbrücke auf die feststehenden Kontakte gewährleistet ist, wobei die zweiten Federstifte beweglich im Rotor gelagert sind.In a further embodiment, the rotor for an electrical switch further comprises a first plate inside the rotor, which is arranged substantially parallel to the contact bridge, two pairs of first and second spring pins and two pairs of first and second springs. The first ends of the respective spring pairs are attached to the first spring pins and the first spring pins lie on the contact bridge and the first plate, the second ends of the respective spring pairs are attached to the second spring pins and the second spring pins on the first plate, so that in the closing position of the rotor a minimum contact pressure of the movable contacts of the contact bridge is ensured on the fixed contacts, wherein the second spring pins are movably mounted in the rotor.

In einer Ausgestaltung umfasst der Rotor für einen elektrischen Schalter des Weiteren eine zweite Platte im Innern des Rotorgehäuses, welche im Wesentlichen parallel zur Kontaktbrücke und zur ersten Platte angeordnet ist, wobei die ersten Federstifte auf der Kontaktbrücke und der ersten und zweiten Platte aufliegen, und wobei die zweiten Enden der jeweiligen Federpaare an den zweiten Federstiften befestigt sind sowie die zweiten Federstifte an der ersten und zweiten Platte.In one embodiment, the rotor for an electrical switch further comprises a second plate in the interior of the rotor housing, which is arranged substantially parallel to the contact bridge and the first plate, wherein the first spring pins rest on the contact bridge and the first and second plate, and wherein the second ends of the respective pairs of springs are secured to the second spring pins and the second spring pins are secured to the first and second plates.

In einer Ausgestaltung der Erfindung sind die zwei Paare an ersten und zweiten Federn als Zugfedern ausgebildet.In one embodiment of the invention, the two pairs of first and second springs are designed as tension springs.

In einer weiteren Ausgestaltung der Erfindung weisen die Platten und die Kontaktbrücke eine Mittelaussparung auf, durch die ein Führungsstift geführt werden kann, der als Drehachse des Rotors wirkt. Die Mittelaussparung kann als Langloch entlang einer Richtung senkrecht zur Richtung der Kontaktbrücke in der Schließ-Stellung ausgebildet sein.In a further embodiment of the invention, the plates and the contact bridge on a central recess through which a guide pin can be performed, which acts as a rotation axis of the rotor. The central recess may be formed as a slot along a direction perpendicular to the direction of the contact bridge in the closed position.

In einer Ausgestaltung der Erfindung sind die zwei Platten mit einem Verbindungsröhrchen miteinander verbunden und das Verbindungsröhrchen ist durch die Mittelaussparung der Kontaktbrücke geführt.In one embodiment of the invention, the two plates are connected to each other with a connecting tube and the connecting tube is guided through the central recess of the contact bridge.

Der Rotor kann des Weiteren einen Führungsstift als Drehachse des Rotors umfassen, der durch das Verbindungsröhrchen geführt ist. Der Durchmesser des Führungsstifts kann so klein im Vergleich zum Innendurchmesser des Verbindungsröhrchens ausgebildet sein, dass der Führungsstift exzentrisch im Verbindungsröhrchen gelagert werden kann.The rotor may further comprise a guide pin as the axis of rotation of the rotor, which is guided by the connecting tube. The diameter of the guide pin may be so small compared to the inner diameter of the connecting tube that the guide pin can be mounted eccentrically in the connecting tube.

In einer weiteren Ausgestaltung der Erfindung sind die zweiten Federstifte jeweils in einer Einkerbung des Rotors gelagert. Diese Einkerbung kann so ausgebildet sein, dass die zweiten Federstifte beweglich in einer Richtung senkrecht zur Richtung der Kontaktbrücke in der Schließstellung gelagert sind.In a further embodiment of the invention, the second spring pins are each mounted in a notch of the rotor. This notch may be formed so that the second spring pins are movable in a direction perpendicular to Direction of the contact bridge are mounted in the closed position.

In einer Ausgestaltung der Erfindung sind die zweiten Federstifte schwimmend im Rotor gelagert. Ebenfalls können die zwei Platten schwimmend im Rotor gelagert sein.In one embodiment of the invention, the second spring pins are floatingly mounted in the rotor. Also, the two plates may be floatingly mounted in the rotor.

Der erfinderische Rotor kann Teil eines elektrischen Schalters sein, der zusätzlich zwei feststehende Kontakte umfasst, wobei der Rotor mit den zwei feststehenden Kontakten zusammenwirkt zum Schließen oder Öffnen eines StromkreisesThe inventive rotor may be part of an electrical switch which additionally comprises two fixed contacts, the rotor cooperating with the two fixed contacts for closing or opening a circuit

Die Erfindung wird im Weiteren anhand der nachfolgenden Figuren beschrieben.

Fig. 1A, 1B, 1C
Rotorgehäuse, Kontaktbrücke und schwimmend gelagerte Kontaktbrücke;
Fig. 2
Rotor mit Kontaktbrücke, zwei Platten, zwei Paaren an ersten und zweiten Federstiften und zwei Paaren an ersten und zweiten Federn;
Fig. 3
Rotor gemäß Fig. 1 in einer seitlichen Darstellung;
Fig. 4
Rotor gemäß Fig. 1 in einer ersten Darstellung;
Fig. 5
Rotor gemäß Fig. 1 in einer zweiten Darstellung;
Fig. 6
Rotor gemäß Fig. 1 in einer dritten Darstellung;
Fig. 7
Kraft-Erosions-Diagramm eines erfindungsgemäßen Rotors;
Fig. 8A, 8B
Rotorgehäuse, Kontaktbrücke und mit Verbindungsröhrchen verbundene Platten;
Fig. 9A, 9B, 9C
Rotorgehäuse, Kontaktbrücke und mit Verbindungsröhrchen verbundene Platten; und
Fig. 10A, 10B
Kontaktbrücke mit einer Platte.
The invention will be described below with reference to the following figures.
Fig. 1A, 1B, 1C
Rotor housing, contact bridge and floating contact bridge;
Fig. 2
Rotor with contact bridge, two plates, two pairs of first and second spring pins and two pairs of first and second springs;
Fig. 3
Rotor according to Fig. 1 in a side view;
Fig. 4
Rotor according to Fig. 1 in a first presentation;
Fig. 5
Rotor according to Fig. 1 in a second presentation;
Fig. 6
Rotor according to Fig. 1 in a third presentation;
Fig. 7
Force erosion diagram of a rotor according to the invention;
8A, 8B
Rotor housing, contact bridge and plates connected by connecting tubes;
Figs. 9A, 9B, 9C
Rotor housing, contact bridge and plates connected by connecting tubes; and
10A, 10B
Contact bridge with a plate.

In den Fig. 1A, 1B und 1C ist ein Rotorgehäuse 110 für einen elektrischen Schalter und eine drehbar gelagerte Kontaktbrücke 200, welche zwei bewegliche Kontakte 210, 220 umfasst, dargestellt. Durch Drehung des Rotors beziehungsweise des Rotorgehäuses 110 können die zwei beweglichen Kontakte 210, 220 mit zwei feststehenden Kontakten eines elektrischen Schalters zusammenwirken zum Schließen oder Öffnen eines Stromkreises. Die drehbar gelagerte Kontaktbrücke 200 ist im Rotorgehäuse 110 in einer Richtung senkrecht zur Richtung der Kontaktbrücke 200 in ihrer Schließ-Stellung beweglich gelagert. Entsprechend der Fig. 1C bedeutet dies, dass die drehbar gelagerte Kontaktbrücke 200 in Richtung des Pfeils bewegbar im Rotorgehäuse 110 angeordnet ist.In the Figs. 1A, 1B and 1C For example, a rotor housing 110 for an electrical switch and a rotatably mounted contact bridge 200, which comprises two movable contacts 210, 220, are shown. By rotation of the rotor or the rotor housing 110, the two movable contacts 210, 220 cooperate with two fixed contacts of an electrical switch for closing or opening a circuit. The rotatably mounted contact bridge 200 is movably mounted in the rotor housing 110 in a direction perpendicular to the direction of the contact bridge 200 in its closed position. According to the Fig. 1C This means that the rotatably mounted contact bridge 200 is arranged movably in the direction of the arrow in the rotor housing 110.

Die drehbar gelagerte Kontaktbrücke 200 kann in einer Aufhängung 300 gelagert sein, welche wiederum beweglich im Rotorgehäuse 110 gelagert ist.The rotatably mounted contact bridge 200 may be mounted in a suspension 300, which in turn is movably mounted in the rotor housing 110.

Die drehbar gelagerte Kontaktbrücke 200 ist ebenso im Rotorgehäuse 110 in einer Richtung senkrecht zur Drehachse der Kontaktbrücke 200 beweglich gelagert.The rotatably mounted contact bridge 200 is also movably mounted in the rotor housing 110 in a direction perpendicular to the axis of rotation of the contact bridge 200.

In Fig. 2 ist ein Rotor 100 für einen elektrischen Schalter dargestellt. Der Rotor 100 umfasst ein Rotorgehäuse 110 und eine drehbar gelagerte Kontaktbrücke 200. Auf der Kontaktbrücke 200 sind zwei bewegliche Kontakte 210, 220 angebracht. Durch Drehung des Rotors 100 können die zwei beweglichen Kontakte 210, 220 mit zwei feststehenden Kontakten 2100, 2200 eines elektrischen Schalters zusammenwirken zum Schließen oder Öffnen eines Stromkreises.In Fig. 2 a rotor 100 for an electrical switch is shown. The rotor 100 includes a rotor housing 110 and a rotatably mounted contact bridge 200. On the contact bridge 200, two movable contacts 210, 220 are mounted. By rotation of the rotor 100, the two movable contacts 210, 220 may cooperate with two fixed contacts 2100, 2200 of an electrical switch to close or open a circuit.

Der Rotor 100 umfasst des Weiteren eine erste und eine zweite Platte 310, 320, die sich im Innern des Rotors 100 befinden und die im Wesentlichen parallel zur Kontaktbrücke 200 angeordnet sind. Zwischen diesen zwei Platten 310, 320 ist die drehbar gelagerte Kontaktbrücke 200 angeordnet. Im Weiteren wird der Aufhängungsmechanismus der Kontaktbrücke 200 im Rotor 100 näher erläutert.The rotor 100 further comprises a first and a second plate 310, 320, which are located inside the rotor 100 and which are arranged substantially parallel to the contact bridge 200. Between these two plates 310, 320, the rotatably mounted contact bridge 200 is arranged. In the following, the suspension mechanism of the contact bridge 200 in the rotor 100 will be explained in more detail.

Der Rotor 100 umfasst dazu zwei Paare an ersten und zweiten Federstiften 610, 710; 620, 720 und zwei Paare an ersten und zweiten Federn 410, 420; 510, 520. Die ersten Enden der jeweiligen Federpaare 410, 420; 510, 520 sind an den ersten Federstiften 610, 710 befestigt. Diese ersten Federstifte 610, 710 liegen auf der Kontaktbrücke 200 und ebenso auf den ersten und zweiten Platten 310, 320 auf. Die zweiten Enden der jeweiligen Federpaare 410, 420; 510, 520 sind an den zweiten Federstiften 620, 720 befestigt. Diese wiederum sind an den Platten 310, 320 befestigt, so dass in der Schließ-Stellung des Rotors 100 ein minimaler Kontaktdruck der beweglichen Kontakte 210, 220 der Kontaktbrücke 200 auf die feststehenden Kontakte 2100, 2200 gewährleistet ist.The rotor 100 for this purpose comprises two pairs of first and second spring pins 610, 710; 620, 720 and two pairs of first and second springs 410, 420; 510, 520. The first ends of the respective spring pairs 410, 420; 510, 520 are attached to the first spring pins 610, 710. These first spring pins 610, 710 rest on the contact bridge 200 and also on the first and second plates 310, 320. The second ends of the respective spring pairs 410, 420; 510, 520 are attached to the second spring pins 620, 720. These in turn are attached to the plates 310, 320, so that in the closed position of the rotor 100, a minimum contact pressure of the movable contacts 210, 220 of the contact bridge 200 is ensured on the fixed contacts 2100, 2200.

Die drehbare gelagerte Kontaktbrücke 200 wird durch den Zug der ersten und zweiten Federpaare 410, 420; 520, 520 auf die ersten Federstifte 610, 710 entsprechend der Darstellung in Fig. 2 gegen den Uhrzeigersinn gedreht. Somit wird beispielsweise der bewegliche Kontakt 220 nach unten und der bewegliche Kontakt 210 nach oben entsprechend der Darstellung der Fig. 2 bewegt und dadurch ein minimaler Kontaktdruck auf die feststehenden Kontakte gewährleistet.The rotatably mounted contact bridge 200 is by the train of the first and second spring pairs 410, 420; 520, 520 on the first spring pins 610, 710 as shown in FIG Fig. 2 turned counterclockwise. Thus, for example, the movable contact 220 is downward and the movable contact 210 upward as shown in FIG Fig. 2 moved, thereby ensuring a minimal contact pressure on the fixed contacts.

Die zweiten Federstifte 620, 720, die an den ersten und zweiten Platten 310, 320 befestigt sind, sind im Rotor 100 beweglich gelagert.The second spring pins 620, 720 fixed to the first and second plates 310, 320 are movably supported in the rotor 100.

In Fig. 3 ist die bewegliche Lagerung der zweiten Federstifte 620, 720 näher erläutert. Die zweiten Federstifte 620, 720 sind jeweils in einer Einkerbung 150 des Rotors 100 gelagert. Zusammen mit der Lagerung der Kontaktbrücke 200 im elektrischen Schalter durch den Führungsstift 800, der durch eine Mittelaussparung 350 der zwei ersten und zweiten Platten 310, 320 und der Kontaktbrücke 200 geführt ist, ermöglichen die Einkerbungen 150, dass die Kontaktbrücke 200 in der Schließ-Stellung senkrecht zu dieser Richtung beweglich ist. Entsprechend der Darstellung der Fig. 3 bedeutet dies, dass sich die Kontaktbrücke 200 mit den beweglichen Kontakten 210, 220 nach oben und unten bewegen kann und dadurch Toleranzen - beispielsweise in den Kontaktstücken der Kontaktbrücke 200-ausgeglichen werden können.In Fig. 3 is the movable mounting of the second spring pins 620, 720 explained in more detail. The second spring pins 620, 720 are each mounted in a notch 150 of the rotor 100. Together with the mounting of the contact bridge 200 in the electrical switch by the guide pin 800, which is guided through a central recess 350 of the two first and second plates 310, 320 and the contact bridge 200, allow the notches 150 that the contact bridge 200 in the closed position is movable perpendicular to this direction. According to the presentation of the Fig. 3 This means that the contact bridge 200 with the movable contacts 210, 220 can move up and down and thereby tolerances - can be compensated - for example, in the contact pieces of the contact bridge 200.

Die Mittelaussparung 350 ist als Langloch ausgebildet, welches sich entlang einer Richtung senkrecht zur Richtung der Kontaktbrücke 200 in der Schließ-Stellung ausgebildet ist.The central recess 350 is formed as an elongated hole, which is formed along a direction perpendicular to the direction of the contact bridge 200 in the closed position.

In der Fig. 4 ist der Rotor 100 mit der Kontaktbrücke 200 und den ersten und zweiten Federstiften 610, 710; 620, 720 dargestellt. Fig. 5 zeigt den Rotor 100 in einer anderen Schnittdarstellung als Fig. 2, 3 oder 4.In the Fig. 4 is the rotor 100 with the contact bridge 200 and the first and second spring pins 610, 710; 620, 720. Fig. 5 shows the rotor 100 in a different sectional view than Fig. 2 . 3 or 4 ,

Fig. 6 zeigt ein weiteres Mal den Rotor 100 mit der Einkerbung 150 im Rotor, die es ermöglicht, dass die Kontaktbrücke 200 zusammen mit den beiden Platten 310, 320 beweglich im Rotor 100 gelagert sind. Die zweiten Federstifte 620, 720 sind somit schwimmend im Rotor 100 gelagert. Dadurch wiederum sind ebenfalls die zwei Platten 310, 320 schwimmend im Rotor 100 gelagert. Fig. 6 shows once again the rotor 100 with the notch 150 in the rotor, which allows the contact bridge 200 are movably mounted together with the two plates 310, 320 in the rotor 100. The second spring pins 620, 720 are thus floatingly mounted in the rotor 100. As a result, in turn, the two plates 310, 320 are also floatingly mounted in the rotor 100.

Die zwei Paare an ersten und zweiten Federn 410, 420; 510, 520 sind in diesem Ausführungsbeispiel als Zugfedern ausgebildet. Die Paare an ersten und zweiten Federn 410, 420; 510, 520 verlaufen von den ersten Federstiften 610, 710 zu den zweiten Federstiften 620, 720 parallel zu den zwei Platten 310, 320. Entsprechend der dargestellten Ausführung verlaufen die ersten und zweiten Federn 410, 420; 510, 520 außerhalb der zwei Platten 310, 320.The two pairs of first and second springs 410, 420; 510, 520 are formed in this embodiment as tension springs. The pairs of first and second springs 410, 420; 510, 520 extend from the first spring pins 610, 710 to the second spring pins 620, 720 in parallel with the two plates 310, 320. According to the illustrated embodiment, the first and second springs 410, 420; 510, 520 outside of the two plates 310, 320.

In Fig. 7 ist ein Kraft-Erosions-Diagramm dargestellt. Dadurch, dass die schwimmend gelagerten zweiten Federstifte 620, 720 eine Bewegung der drehbar gelagerten Kontaktbrücke 200 ermöglichen, stellt sich unabhängig vom Erosionsgrad der Kontaktstücke eine gleiche Kontaktkraft an beiden beweglichen Kontakten 210, 220 ein.In Fig. 7 a force-erosion diagram is shown. Because the floatingly mounted second spring pins 620, 720 allow movement of the rotatably mounted contact bridge 200, regardless of the degree of erosion of the contact pieces, an equal contact force is applied to both movable contacts 210, 220.

In den Fig. 8A und 8B sind die ersten und zweiten Platten 310, 320 dargestellt, die mit einem Verbindungsröhrchen 850 miteinander verbunden sind. Das Verbindungsröhrchen 850 ist durch die Mittelaussparung 350 der Kontaktbrücke 200 geführt.In the Figs. 8A and 8B For example, the first and second plates 310, 320 are shown connected to each other by a connection tube 850. The connecting tube 850 is guided through the central recess 350 of the contact bridge 200.

Ein Führungsstift 800 dient als Drehachse des Rotors 100. Der Führungsstift 800 ist durch das Verbindungsröhrchen 850 geführt. Der Durchmesser des Führungsstifts 800 kann so klein im Vergleich zum Innendurchmesser des Verbindungsröhrchens 850 ausgebildet sein, dass der Führungsstift 800 exzentrisch im Verbindungsröhrchen 850 gelagert werden kann.A guide pin 800 serves as a rotation axis of the rotor 100. The guide pin 800 is passed through the connection tube 850. The diameter of the guide pin 800 may be made small relative to the inner diameter of the connecting tube 850 such that the guide pin 800 can be eccentrically mounted in the connecting tube 850.

Dies ist näher in den Fig. 9A, 9B und 9C dargestellt. In Fig. 9A befindet sich der Führungsstift 800 mittig im Verbindungsröhrchen 850, es ist somit keine Ausgleichsbewegung erfolgt. Dies ist in den Fig. 9B und 9C anders, hier ist der Führungsstift 800 exzentrisch im Verbindungsröhrchen 850 gelagert und die Kontaktbrücke 200 gleicht schwimmend Unsymmetrien des Aufbaus aus.This is closer in the Figs. 9A, 9B and 9C shown. In Fig. 9A is the guide pin 800 in the middle of the connecting tube 850, so there is no compensation movement. This is in the Figs. 9B and 9C differently, here the guide pin 800 is mounted eccentrically in the connecting tube 850 and the contact bridge 200 balances floating asymmetries of the structure.

In den Fig. 10A und 10B ist der Rotor 100 mit einer ersten Platte 310 dargestellt. Diese befindet sich im Innern des Rotors 100 und ist im Wesentlichen parallel zur Kontaktbrücke 200 angeordnet. Die Kontaktbrücke 200 hat eine Mittelaussparung, in der die erste Platte 310 eingesteckt ist. Erste Platte 310 und Kontaktbrücke 200 sind drehbar um den Führungsstift 800. Die Kontaktbrücke 200 kann ebenfalls zweistückig ausgebildet sein mit einer Ausnehmung für die erste Platte 310.In the Figs. 10A and 10B the rotor 100 is shown with a first plate 310. This is located in the interior of the rotor 100 and is arranged substantially parallel to the contact bridge 200. The contact bridge 200 has a central recess in which the first plate 310 is inserted. First plate 310 and contact bridge 200 are rotatable about the guide pin 800. The contact bridge 200 may also be formed in two pieces with a recess for the first plate 310th

In Fig. 10B ist sind die zwei Paare an ersten und zweiten Federstiften 610, 710; 620, 720 und die zwei Paare an ersten und zweiten Federn 410, 420; 510, 520 dargestellt. Die ersten Enden der jeweiligen Federpaare 410, 420; 510, 520 sind an den ersten Federstiften 610, 710 befestigt und die ersten Federstifte 610, 710 liegen auf der Kontaktbrücke 200 und der ersten Platte 310 auf. Die zweiten Enden der jeweiligen Federpaare 410, 420; 510, 520 sind an den zweiten Federstiften 620, 720 befestigt sowie die zweiten Federstifte 620, 720 an der ersten Platte 310, so dass in der Schließ-Stellung des Rotors 100 ein minimaler Kontaktdruck der beweglichen Kontakte 210; 220 der Kontaktbrücke 200 auf die feststehenden Kontakte 2100; 2200 gewährleistet ist, wobei die zweiten Federstifte 620, 720 beweglich im Rotorgehäuse gelagert sind.In Fig. 10B are the two pairs of first and second spring pins 610, 710; 620, 720 and the two pairs of first and second springs 410, 420; 510, 520. The first ends of the respective spring pairs 410, 420; 510, 520 are attached to the first spring pins 610, 710 and the first spring pins 610, 710 are on the contact bridge 200 and the first plate 310 on. The second ends of the respective spring pairs 410, 420; 510, 520 are fixed to the second spring pins 620, 720 and the second spring pins 620, 720 on the first plate 310, so that in the closed position of the rotor 100, a minimum contact pressure of the movable contacts 210; 220 of the contact bridge 200 on the fixed contacts 2100; 2200 is ensured, wherein the second spring pins 620, 720 are movably mounted in the rotor housing.

Der erfindungsgemäße Rotor 100 kann Teil eines elektrischen Schalters sein, wobei dieser zusätzlich zwei feststehende Kontakte 2100, 2200 umfasst. Der Rotor 100 mit den zwei beweglichen Kontakten 210, 220 kann mit den zwei feststehenden Kontakten 2100, 2200 zusammenwirken zum Schließen oder Öffnen eines Stromkreises.The rotor 100 according to the invention may be part of an electrical switch, which additionally comprises two fixed contacts 2100, 2200. The rotor 100 with the two movable contacts 210, 220 may cooperate with the two fixed contacts 2100, 2200 to close or open a circuit.

Bisher wird üblicherweise die Kontaktbrücke ortsfest im Rotor gelagert. Ein Ausgleich von unterschiedlichen Federlängen bei unterschiedlichen Toleranzen der Bauteile oder unterschiedlicher Hebelarme auf Grund eines unterschiedlichen Abbrands der Kontakte wird erfindungsgemäß durch eine schwimmende Lagerung der Platten 310, 320, die die Kontaktbrücke 200 tragen, ausgeglichen.So far, the contact bridge is usually stored stationary in the rotor. A compensation of different spring lengths with different tolerances of the components or different lever arms due to a different erosion of the contacts is inventively by a floating mounting of the plates 310, 320, which carry the contact bridge 200 compensated.

Durch Einführung eines Verbindungsröhrchens werden die seitlichen zur Kontaktbrücke angeordneten Platten miteinander verbunden. Damit wird ein stabiler innerer Rotor mit reduzierten Freiheitsgraden geschaffen. Die Kontaktbrücke dreht koaxial um das Röhrchen und wird zwangsläufig bei der Ausgleichsbewegung des Inneren Rotors mitbewegt. Ohne diese Kopplung fehlt die Zwangsläufigkeit und damit die Reproduzierbarkeit des Ausgleichsergebnisses. Das führt dazu, dass bei den schnellen Einschaltvorgängen eines Leistungsschalters, die Kontaktbrücke nicht die volle Ausgleichbewegung der Platten mitmachen kann und es somit systembedingt zu unsymmetrischen Kontaktkräften kommen kann, z.B. auf Grund von Reibung.By inserting a connecting tube, the lateral plates arranged to the contact bridge are connected to each other. This creates a stable inner rotor with reduced degrees of freedom. The contact bridge rotates coaxially around the tube and is inevitably moved during the compensation movement of the inner rotor. Without this coupling, the inevitability and thus the reproducibility of the compensation result are missing. That leads to that In the case of fast closing operations of a circuit breaker, the contact bridge can not join the full compensation movement of the plates, and as a result system-related unbalanced contact forces can occur, eg due to friction.

Claims (15)

Rotor (100) für einen elektrischen Schalter umfassend ein Rotorgehäuse (110) und eine drehbar gelagerte Kontaktbrücke (200), welche zwei bewegliche Kontakte (210; 220) umfasst, wobei durch Drehung des Rotors (100) die zwei beweglichen Kontakte (210; 220) mit zwei feststehenden Kontakten (2100; 2200) eines elektrischen Schalters zusammenwirken können zum Schließen oder Öffnen eines Stromkreises;
dadurch gekennzeichnet, dass die drehbar gelagerte Kontaktbrücke (200) im Rotorgehäuse (110) in einer Richtung senkrecht zur Richtung der Kontaktbrücke (200) in ihrer Schließ-Stellung beweglich gelagert ist.A rotor (100) for an electric switch comprising a rotor housing (110) and a rotatably mounted contact bridge (200) comprising two movable contacts (210; 220), wherein by rotation of the rotor (100) the two movable contacts (210; 220 ) can cooperate with two fixed contacts (2100, 2200) of an electrical switch for closing or opening a circuit;
characterized in that the rotatably mounted contact bridge (200) is movably mounted in the rotor housing (110) in a direction perpendicular to the direction of the contact bridge (200) in its closed position. Rotor (100) für einen elektrischen Schalter gemäß Anspruch 1, bei dem die drehbar gelagerte Kontaktbrücke (200) im Rotorgehäuse (110) in einer Richtung senkrecht zur Drehachse der Kontaktbrücke (200) beweglich gelagert ist.Rotor (100) for an electrical switch according to claim 1, wherein the rotatably mounted contact bridge (200) is movably mounted in the rotor housing (110) in a direction perpendicular to the axis of rotation of the contact bridge (200). Rotor (100) für einen elektrischen Schalter gemäß Anspruch 1 oder 2, wobei der Rotor (100) weiter umfasst: eine erste Platte (310) im Innern des Rotorgehäuses (110), welche im Wesentlichen parallel zur Kontaktbrücke (200) angeordnet ist; zwei Paare an ersten und zweiten Federstiften (610, 710; 620, 720); und zwei Paare an ersten und zweiten Federn (410, 420; 510, 520), wobei die ersten Enden der jeweiligen Federpaare (410, 420; 510, 520) an den ersten Federstiften (610, 710) befestigt sind und die ersten Federstifte (610, 710) auf der Kontaktbrücke (200) und der ersten Platte (310) aufliegen, und wobei die zweiten Enden der jeweiligen Federpaare (410, 420; 510, 520) an den zweiten Federstiften (620, 720) befestigt sind sowie die zweiten Federstifte (620, 720) an der ersten Platte (310), so dass in der Schließ-Stellung des Rotors (100) ein minimaler Kontaktdruck der beweglichen Kontakte (210; 220) der Kontaktbrücke (200) auf die feststehenden Kontakte (2100; 2200) gewährleistet ist, wobei die zweiten Federstifte (620, 720) beweglich im Rotorgehäuse gelagert sind. The rotor (100) for an electrical switch according to claim 1 or 2, wherein the rotor (100) further comprises: a first plate (310) in the interior of the rotor housing (110), which is arranged substantially parallel to the contact bridge (200); two pairs of first and second spring pins (610, 710; 620, 720); and two pairs of first and second springs (410, 420, 510, 520), wherein the first ends of the respective spring pairs (410, 420; 510, 520) are secured to the first spring pins (610, 710) and the first spring pins (610 , 710) rest on the contact bridge (200) and the first plate (310), and wherein the second ends of the respective spring pairs (410, 420; 510, 520) are attached to the second spring pins (620, 720) and the second spring pins (620, 720) at the first Plate (310), so that in the closed position of the rotor (100) a minimum contact pressure of the movable contacts (210; 220) of the contact bridge (200) on the fixed contacts (2100; 2200) is ensured, wherein the second spring pins ( 620, 720) are movably mounted in the rotor housing. Rotor (100) gemäß Anspruch 3, wobei der Rotor (100) weiter umfasst: eine zweite Platte (320) im Innern des Rotorgehäuses (110), welche im Wesentlichen parallel zur Kontaktbrücke (200) und zur ersten Platte (310) angeordnet ist, wobei die ersten Federstifte (610, 710) auf der Kontaktbrücke (200) und der ersten und zweiten Platte (310; 320) aufliegen, und wobei die zweiten Enden der jeweiligen Federpaare (410, 420; 510, 520) an den zweiten Federstiften (620, 720) befestigt sind sowie die zweiten Federstifte (620, 720) an der ersten und zweiten Platte (310; 320). The rotor (100) of claim 3, wherein the rotor (100) further comprises: a second plate (320) in the interior of the rotor housing (110), which is arranged substantially parallel to the contact bridge (200) and the first plate (310), wherein the first spring pins (610, 710) on the contact bridge (200) and the and the second ends of the respective pairs of springs (410, 420; 510, 520) are secured to the second spring pins (620, 720) and the second spring pins (620, 720) are secured to the first and second plates (310; 320) first and second plates (310, 320). Rotor (100) gemäß Anspruch 3 oder 4, bei dem die zwei Paare an ersten und zweiten Federn (410, 420; 510, 520) als Zugfedern ausgebildet sind.A rotor (100) according to claim 3 or 4, wherein the two pairs of first and second springs (410, 420; 510, 520) are formed as tension springs. Rotor (100) gemäß Anspruch 3, 4 oder 5, bei dem die zwei Platten (310; 320) und die Kontaktbrücke (200) eine Mittelaussparung (350) aufweisen, durch die ein Führungsstift (800), der als Drehachse des Rotors (100) wirkt, geführt werden kann.A rotor (100) according to claim 3, 4 or 5, wherein the two plates (310; 320) and the contact bridge (200) have a central recess (350) through which a guide pin (800) serving as the axis of rotation of the rotor (100 ) acts, can be performed. Rotor (100) gemäß Anspruch 6, bei dem die Mittelaussparung (350) als Langloch entlang einer Richtung senkrecht zur Richtung der Kontaktbrücke (200) in der Schließ-Stellung ausgebildet ist.A rotor (100) according to claim 6, wherein the central recess (350) is formed as a slot along a direction perpendicular to the direction of the contact bridge (200) in the closed position. Rotor (100) gemäß einem der Ansprüche 1 bis 6, bei dem die zwei Platten (310; 320) mit einem Verbindungsröhrchen (850) miteinander verbunden sind und das Verbindungsröhrchen (850) durch die Mittelaussparung (350) der Kontaktbrücke (200) geführt ist.A rotor (100) according to any one of claims 1 to 6, wherein the two plates (310; 320) are interconnected with a connecting tube (850) and the connecting tube (850) through the central recess (350) of the contact bridge (200) is guided. Rotor (100) gemäß Anspruch 8, der des Weiteren einen Führungsstift (800) als Drehachse des Rotors (100) umfasst, der durch das Verbindungsröhrchen (850) geführt ist.The rotor (100) of claim 8, further comprising a guide pin (800) as the axis of rotation of the rotor (100) passed through the connection tube (850). Rotor (100) gemäß Anspruch 9, bei dem der Durchmesser des Führungsstifts (800) so klein im Vergleich zum Innendurchmesser des Verbindungsröhrchens (850) ausgebildet ist, dass der Führungsstift (800) exzentrisch im Verbindungsröhrchen (850) gelagert sein kann.The rotor (100) of claim 9, wherein the diameter of the guide pin (800) is made small compared to the inner diameter of the connecting tube (850) such that the guide pin (800) can be eccentrically mounted in the connecting tube (850). Rotor (100) gemäß einem der vorherigen Ansprüche, bei dem die zweiten Federstifte (620, 720) jeweils in einer Einkerbung (150) des Rotors (100) gelagert sind.Rotor (100) according to one of the preceding claims, wherein the second spring pins (620, 720) are each mounted in a notch (150) of the rotor (100). Rotor (100) gemäß Anspruch 11, bei dem die zweiten Federstifte (620, 720) in einer Richtung senkrecht zur Richtung der Kontaktbrücke (200) in der Schließ-Stellung beweglich gelagert sind.A rotor (100) according to claim 11, wherein the second spring pins (620, 720) are movably supported in a direction perpendicular to the direction of the contact bridge (200) in the closed position. Rotor (100) gemäß einem der vorherigen Ansprüche, bei dem die zweiten Federstifte (620, 720) schwimmend im Rotor (100) gelagert sind.Rotor (100) according to one of the preceding claims, wherein the second spring pins (620, 720) are floatingly mounted in the rotor (100). Rotor (100) gemäß einem der vorherigen Ansprüche, bei dem die zwei Platten (310; 320) schwimmend im Rotor (100) gelagert sind.Rotor (100) according to one of the preceding claims, in which the two plates (310; 320) are floatingly mounted in the rotor (100). Elektrischer Schalter umfassend einen Rotor (100) gemäß einem der vorherigen Ansprüche und zwei feststehende Kontakte (2100; 2200), wobei der Rotor (100) mit den zwei feststehenden Kontakten (2100; 2200) zusammenwirkt zum Schließen oder Öffnen eines Stromkreises.An electrical switch comprising a rotor (100) according to any preceding claim and two fixed contacts (2100; 2200), the rotor (100) cooperating with the two fixed contacts (2100; 2200) to close or open a circuit.
EP13179355.6A 2012-08-29 2013-08-06 Rotor for an electrical switch Not-in-force EP2704172B1 (en)

Applications Claiming Priority (2)

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DE102012215321 2012-08-29
DE102013208373.4A DE102013208373A1 (en) 2012-08-29 2013-05-07 Rotor for an electric switch

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EP2704172A1 true EP2704172A1 (en) 2014-03-05
EP2704172B1 EP2704172B1 (en) 2017-05-31

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EP2846339A1 (en) * 2013-08-29 2015-03-11 Siemens Aktiengesellschaft Rotor for an electrical switch
EP2919245A1 (en) * 2014-03-14 2015-09-16 Siemens Aktiengesellschaft Switch device of an electrical power circuit with a force transmission element and retaining element

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DE102014224623A1 (en) 2014-12-02 2016-06-16 Siemens Aktiengesellschaft Rotor and electromechanical switching device with a rotor
DE102014224622A1 (en) 2014-12-02 2016-06-02 Siemens Aktiengesellschaft Rotor and electromechanical switching device with a rotor
DE102014224624A1 (en) 2014-12-02 2016-06-02 Siemens Aktiengesellschaft Rotor and electromechanical switching device with a rotor
KR101904877B1 (en) * 2017-04-10 2018-10-08 엘에스산전 주식회사 Movable Contact Assembly for Circuit Breaker
GB2571365A (en) * 2018-02-23 2019-08-28 Eaton Intelligent Power Ltd Electrical Switchgear
CN111769014B (en) * 2020-06-06 2022-05-13 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） Rotary multi-contact-finger contact structure

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DE69209972T2 (en) 1991-10-15 1996-10-31 Schneider Electric Sa Circuit breaker consisting of single-pole units
DE69304374T2 (en) 1992-03-13 1997-02-20 Schneider Electric Sa Circuit breaker with molded housing with delay at the end of movement of the contact bridge repulsion
US6310307B1 (en) * 1999-12-17 2001-10-30 General Electric Company Circuit breaker rotary contact arm arrangement
US20090065341A1 (en) * 2007-09-11 2009-03-12 Siemens Energy & Automation, Inc. Double Break Disconnect/Contact System
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Publication number Priority date Publication date Assignee Title
EP2846339A1 (en) * 2013-08-29 2015-03-11 Siemens Aktiengesellschaft Rotor for an electrical switch
US9330859B2 (en) 2013-08-29 2016-05-03 Siemens Aktiengesellschaft Rotor for an electric switch
EP2919245A1 (en) * 2014-03-14 2015-09-16 Siemens Aktiengesellschaft Switch device of an electrical power circuit with a force transmission element and retaining element
US9293271B2 (en) 2014-03-14 2016-03-22 Siemend Aktiengesellschaft Switch apparatus of an electrical circuit breaker comprising a force transfer element and a holding element

Also Published As

Publication number Publication date
US9299518B2 (en) 2016-03-29
CN103681131B (en) 2017-12-19
CN103681131A (en) 2014-03-26
US20140061015A1 (en) 2014-03-06
DE102013208373A1 (en) 2014-03-06
EP2704172B1 (en) 2017-05-31

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