EP1037239A2 - Multi-pole power switch - Google Patents

Multi-pole power switch Download PDF

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Publication number
EP1037239A2
EP1037239A2 EP00104332A EP00104332A EP1037239A2 EP 1037239 A2 EP1037239 A2 EP 1037239A2 EP 00104332 A EP00104332 A EP 00104332A EP 00104332 A EP00104332 A EP 00104332A EP 1037239 A2 EP1037239 A2 EP 1037239A2
Authority
EP
European Patent Office
Prior art keywords
shaft
switching
circuit breaker
segments
coupling element
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
EP00104332A
Other languages
German (de)
French (fr)
Other versions
EP1037239B1 (en
EP1037239A3 (en
Inventor
Franz Böder
Guido Dedenbach
Hans-Jürgen Mader
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.)
Eaton Industries GmbH
Original Assignee
Moeller GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Moeller GmbH filed Critical Moeller GmbH
Publication of EP1037239A2 publication Critical patent/EP1037239A2/en
Publication of EP1037239A3 publication Critical patent/EP1037239A3/en
Application granted granted Critical
Publication of EP1037239B1 publication Critical patent/EP1037239B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0072—Details of switching devices, not covered by groups H01H1/00 - H01H7/00 particular to three-phase switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H2009/0094—Details of rotatable shafts which are subdivided; details of the coupling means thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/1009—Interconnected mechanisms
    • H01H2071/1036—Interconnected mechanisms having provisions for four or more poles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/1009—Interconnected mechanisms
    • 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

  • the invention relates to a multi-pole circuit breaker with a switching chamber housing, in which a number of interrupters corresponding to the number of poles is arranged side by side, and one common to all poles Switching shaft, with each switching chamber having a fixed and a swiveling one Contact bridge formed contact arrangement, which with the fixed contact arrangement cooperates.
  • Such a circuit breaker is for example from EP 0542 636 B1 known.
  • Each of the contact bridges is in a separate plastic existing shaft segment of the control shaft arranged.
  • To connect the Shaft segments are two axially extending, parallel to each other arranged shift rods provided.
  • the disadvantage of this known circuit breakers among other things, that the assembly of the from Shaft segments and the shift rods existing shift shaft relative is time consuming.
  • an expensive storage of the selector shaft in the circuit breaker switch lock, and when using continuous metal bars often pose problems with regard to the electrical insulation of adjacent switching chambers. After all, that is Torsional rigidity of such a control shaft is low and is usually sufficient not the requirements placed on them.
  • From EP 0 634 051 B1 is a multi-pole circuit breaker with one for all poles common switching shaft known, in which the contact bridges the individual interrupters are also arranged on shaft segments.
  • the middle shaft segment points to it both ends on a central pin, which in corresponding Recesses of the adjacent shaft segments is inserted.
  • recessed levers at the ends of the shaft segments provided to accommodate additional coupling bolts.
  • a disadvantage of this Known circuit breakers include the additional connection via coupling bolts and the also relatively complex storage, to ensure exact positioning of the selector shaft.
  • DE 42 01 255 A1 includes a multi-pole circuit breaker a switching shaft common to all poles is known, in which the switching chambers assigned contact bridges in adjacent shaft segments are arranged.
  • the shaft segments are used to form the control shaft connected to each other via plastic coupling elements.
  • the coupling elements consist essentially of a central partition for electrical insulation of adjacent swiveling contact bridges and from cylindrical on both sides of the partition Share with two mounting pins each, which in corresponding Engage recesses in the shaft segments.
  • the invention has for its object a multi-pole circuit breaker specify the type mentioned, the switching shaft on simple Is pre-assembled, has sufficient torsional rigidity and in the interrupter housing for exact positioning no complex ones Stock required.
  • the invention is essentially based on the idea that the Plastic existing and containing the pivoting contact bridges Shaft segments are connected to one another via coupling elements the shift shaft is supported on the shift chamber housing.
  • This includes the respective coupling element two tab-shaped parts, which are connected to each other via a bearing shaft and which on their the Side facing away from the bearing shaft at least two connecting bolts wear, which for connection to the adjacent shaft segments in engage corresponding recesses in these segments.
  • the coupling element can be made of metal as well as an electrical one non-conductive material of sufficient strength. Good torsional rigidity the shift shaft, it has proven to be advantageous if the distance between adjacent connecting bolts of the respective coupling element larger than the diameter of the bearing shaft is.
  • FIG 1 denotes a three-pole circuit breaker, which is a Switch chamber housing 2 made of plastic with three arranged side by side and comprises essentially identical switching chambers 3-5.
  • Each of the switching chambers 3-5 contains a fixed contact arrangement and one designed as a pivotable contact bridge 6-8 contact arrangement, which interacts with the fixed contact arrangement in a manner known per se (on the structure and operation of such circuit breakers see. also the EP 0542 636 B1) mentioned at the beginning.
  • the contact bridges 6-8 are connected to each other via a common control shaft 9. This is each of the contact bridges 6-8 in a plastic shaft segment 10-12 pivoted about a corresponding axis 13 (Fig.2).
  • the shaft segments 10-12 (for reasons of clarity the contact bridges 6-8 omitted) by means of identical metallic Coupling elements 14, 15 connected. These each include two tab-shaped parts 16, 17 which are connected to one another via a bearing shaft 18 are connected and facing away from the bearing shaft 18 Side at least two connecting bolts extending in the axial direction Wear 19, 20 or 21, 22. The distance 23 is between the adjacent connecting bolts 19, 20 and 21, 22 of the respective Coupling element 14, 15 larger than the diameter 24 of the bearing shaft 18.
  • the shaft segments 10-12 each point to the corresponding one Coupling element 14, 15 facing side for receiving the connecting bolts 19-22 recesses 25, 26.
  • the coupling elements 14, 15 include in the area between the two tab-shaped Parts 16, 17 at least one extending in the axial direction Pin 27, which with one of the two tab-shaped parts 16 or 17 is firmly connected and of the other tab-shaped Part 17 or 16 has a predetermined distance, so that on this Side results in a slit-shaped opening 28.
  • the pin 27 is used for connection the control shaft 9 with the circuit breaker of the circuit breaker, not shown 1, wherein a usually lever-shaped connecting part (toggle lever) of the key switch inserted into the gap-shaped opening 28 and by laterally shifting the pin 27 into a corresponding recess of the toggle lever is inserted.
  • the transition area between neighboring ones Interrupters 3-5 is partially used as a bearing 29 (Fig. 1) for the bearing shaft 18 of the connecting the corresponding shaft segments 10-12 Coupling element 14, 15 formed (Fig.2, 3).
  • the invention is of course not limited to that described above Embodiment limited. So the circuit breaker according to the invention for example also include four interrupters.
  • the shift shaft in this case is composed of four shaft segments, which over three the coupling elements described above interconnected become.
  • the coupling elements can also be made of metal instead an electrically insulating material (e.g. plastic), provided that there is sufficient torsional rigidity of the selector shaft.
  • the pin 27 to connect the control shaft with the key switch can also be used as a continuous Be formed and the two tab-shaped parts 16th and 17 connect to one another without forming a gap-shaped opening 28. In this case, the toggle of the key switch is already pre-assembled on the Cones arranged.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

Die Erfindung betrifft einen mehrpoligen Leistungsschalter mit einem Schaltkammergehäuse (2), in dem eine der Polzahl entsprechende Anzahl von Schaltkammern (3-5) nebeneinander angeordnet ist, sowie einer für alle Pole gemeinsamen Schaltwelle (9), wobei jede Schaltkammer (3-5) eine feststehende und eine als schwenkbare Kontaktbrücke (6-8) ausgebildete Kontaktanordnung umfasst, welche mit der feststehenden Kontaktanordnung zusammenwirkt. Um zu erreichen, dass die Schaltwelle (9) des Leistungsschalters (1) auf einfache Weise vormontierbar ist, eine ausreichende Torsionssteifigkeit besitzt und in dem Schaltkammergehäuse (2) zur exakten Positionierung keine aufwendigen Lager erfordert, schlägt die Erfindung vor, die aus Kunststoff bestehenden und die schwenkbaren Kontaktbrücken (6-8) enthaltenden Wellensegmente (10-12) der Schaltwelle (9) über Kupplungselemente (14,15) miteinander zu verbinden, über die sich die Schaltwelle (9) an dem Schaltkammergehäuse abstützt. Hierzu umfasst das jeweilige Kupplungselement (14,15) zwei laschenförmig ausgebildete Teile (16,17), welche über eine Lagerwelle (18) miteinander verbunden sind und die auf ihrer der Lagerwelle (18) abgewandten Seite jeweils mindestens zwei Verbindungsbolzen (19-22) tragen, welche zur Verbindung mit den benachbarten Wellensegmenten (10-12) in entsprechende Ausnehmungen (25,26) dieser Segmente eingreifen. <IMAGE>The invention relates to a multi-pole circuit breaker with a switching chamber housing (2) in which a number of switching chambers (3-5) corresponding to the number of poles is arranged next to one another, and to a switching shaft (9) common to all poles, each switching chamber (3-5) comprises a fixed contact arrangement and a contact arrangement designed as a pivotable contact bridge (6-8) which cooperates with the fixed contact arrangement. In order to ensure that the switching shaft (9) of the circuit breaker (1) can be preassembled in a simple manner, has sufficient torsional rigidity and does not require any expensive bearings in the switching chamber housing (2) for exact positioning, the invention proposes that the plastic and to connect the pivotable contact bridges (6-8) containing shaft segments (10-12) of the selector shaft (9) to one another via coupling elements (14, 15), via which the selector shaft (9) is supported on the switching chamber housing. For this purpose, the respective coupling element (14, 15) comprises two tab-shaped parts (16, 17) which are connected to one another via a bearing shaft (18) and which each have at least two connecting bolts (19-22) on their side facing away from the bearing shaft (18). wear, which engage in connection with the adjacent shaft segments (10-12) in corresponding recesses (25,26) of these segments. <IMAGE>

Description

Technisches GebietTechnical field

Die Erfindung betrifft einen mehrpoligen Leistungsschalter mit einem Schaltkammergehäuse, in dem eine der Polzahl entsprechende Anzahl von Schaltkammern nebeneinander angeordnet ist, sowie einer für alle Pole gemeinsamen Schaltwelle, wobei jede Schaltkammer eine feststehende und eine als schwenkbare Kontaktbrücke ausgebildete Kontaktanordnung umfasst, welche mit der feststehenden Kontaktanordnung zusammenwirkt.The invention relates to a multi-pole circuit breaker with a switching chamber housing, in which a number of interrupters corresponding to the number of poles is arranged side by side, and one common to all poles Switching shaft, with each switching chamber having a fixed and a swiveling one Contact bridge formed contact arrangement, which with the fixed contact arrangement cooperates.

Stand der TechnikState of the art

Ein derartiger Leistungsschalter ist beispielsweise aus der EP 0542 636 B1 bekannt. Dabei ist jede der Kontaktbrücken in einem separaten aus Kunststoff bestehenden Wellensegment der Schaltwelle angeordnet. Zur Verbindung der Wellensegmente sind zwei sich in axialer Richtung erstreckende, parallel zueinander angeordnete Schaltstangen vorgesehen. Nachteilig ist bei diesem bekannten Leistungsschalter unter anderem, dass die Montage der aus den Wellensegmenten und den Schaltstangen bestehenden Schaltwelle relativ zeitaufwendig ist. Außerdem ist eine aufwendige Lagerung der Schaltwelle in dem Schaltschloss des Leistungsschalters erforderlich, und bei der Verwendung durchgehender Metallstangen ergeben sich häufig Probleme hinsichtlich der elektrischen Isolierung benachbarter Schaltkammern. Schließlich ist die Torsionssteifigkeit einer derartigen Schaltwelle gering und genügt in der Regel nicht den an sie gestellten Anforderungen. Such a circuit breaker is for example from EP 0542 636 B1 known. Each of the contact bridges is in a separate plastic existing shaft segment of the control shaft arranged. To connect the Shaft segments are two axially extending, parallel to each other arranged shift rods provided. The disadvantage of this known circuit breakers, among other things, that the assembly of the from Shaft segments and the shift rods existing shift shaft relative is time consuming. In addition, an expensive storage of the selector shaft in the circuit breaker switch lock, and when using continuous metal bars often pose problems with regard to the electrical insulation of adjacent switching chambers. After all, that is Torsional rigidity of such a control shaft is low and is usually sufficient not the requirements placed on them.

Aus der EP 0 634 051 B1 ist ein mehrpoliger Leistungsschalter mit einer für alle Pole gemeinsamen Schaltwelle bekannt, bei der die Kontaktbrücken der einzelnen Schaltkammern ebenfalls an Wellensegmenten angeordnet sind. Zur Herstellung der Schaltwelle weist das mittlere Wellensegment an seinen beiden Enden jeweils einen zentrischen Zapfen auf, der in entsprechende Ausnehmungen der benachbarten Wellensegmente gesteckt wird. Außerdem sind an den Enden der Wellensegmente mit Ausnehmungen versehene Hebel zur Aufnahme zusätzlicher Kupplungsbolzen vorgesehen. Nachteilig bei diesem bekannten Leistungsschalter ist unter anderem die zusätzliche Verbindung über Kupplungsbolzen sowie die ebenfalls relativ aufwendige Lagerung, um eine exakte Positionierung der Schaltwelle zu gewährleisten.From EP 0 634 051 B1 is a multi-pole circuit breaker with one for all poles common switching shaft known, in which the contact bridges the individual interrupters are also arranged on shaft segments. To produce the selector shaft, the middle shaft segment points to it both ends on a central pin, which in corresponding Recesses of the adjacent shaft segments is inserted. Moreover are recessed levers at the ends of the shaft segments provided to accommodate additional coupling bolts. A disadvantage of this Known circuit breakers include the additional connection via coupling bolts and the also relatively complex storage, to ensure exact positioning of the selector shaft.

Aus der DE 42 01 255 A1 ist schließlich ein mehrpoliger Leistungsschalter mit einer für alle Pole gemeinsamen Schaltwelle bekannt, bei der die den Schaltkammern zugeordneten Kontaktbrücken in benachbarten Wellensegmenten angeordnet sind. Zur Bildung der Schaltwelle werden die Wellensegmente über Kupplungselemente aus Kunststoff miteinander verbunden. Die Kupplungselemente bestehen jeweils im wesentlichen aus einer zentralen Zwischenwand zur elektrischen Isolierung benachbarter schwenkbarer Kontaktbrücken sowie aus beidseitig an der Zwischenwand angeordneten zylinderförmigen Teilen mit jeweils zwei Halterungsstiften, welche in entsprechende Ausnehmungen der Wellensegmente eingreifen. Nachteilig ist bei diesem Leistungsschalter unter anderem ebenfalls die relativ aufwendige Lagerung der Schaltwelle, die im wesentlichen im Bereich der Wellensegmente erfolgt.Finally, DE 42 01 255 A1 includes a multi-pole circuit breaker a switching shaft common to all poles is known, in which the switching chambers assigned contact bridges in adjacent shaft segments are arranged. The shaft segments are used to form the control shaft connected to each other via plastic coupling elements. The coupling elements consist essentially of a central partition for electrical insulation of adjacent swiveling contact bridges and from cylindrical on both sides of the partition Share with two mounting pins each, which in corresponding Engage recesses in the shaft segments. A disadvantage of this circuit breaker among other things, the relatively expensive storage of Switching shaft, which takes place essentially in the area of the shaft segments.

Darstellung der ErfindungPresentation of the invention

Der Erfindung liegt die Aufgabe zugrunde, einen mehrpoligen Leistungsschalter der eingangs erwähnten Art anzugeben, dessen Schaltwelle auf einfache Weise vormontierbar ist, eine ausreichende Torsionssteifigkeit besitzt und in dem Schaltkammergehäuse zur exakten Positionierung keine aufwendigen Lager erfordert. The invention has for its object a multi-pole circuit breaker specify the type mentioned, the switching shaft on simple Is pre-assembled, has sufficient torsional rigidity and in the interrupter housing for exact positioning no complex ones Stock required.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst. Weitere, besonders vorteilhafte Ausgestaltungen der Erfindung offenbaren die Unteransprüche.This object is achieved by the features of claim 1 solved. Reveal further, particularly advantageous embodiments of the invention the subclaims.

Die Erfindung beruht im wesentlichen auf dem Gedanken, dass die aus Kunststoff bestehenden und die schwenkbaren Kontaktbrücken enthaltenden Wellensegmente über Kupplungselemente miteinander verbunden sind, über die sich die Schaltwelle an dem Schaltkammergehäuse abstützt. Hierzu umfasst das jeweilige Kupplungselement zwei laschenförmig ausgebildete Teile, welche über eine Lagerwelle miteinander verbunden sind und die auf ihrer der Lagerwelle abgewandten Seite jeweils mindestens zwei Verbindungsbolzen tragen, welche zur Verbindung mit den benachbarten Wellensegmenten in entsprechende Ausnehmungen dieser Segmente eingreifen.The invention is essentially based on the idea that the Plastic existing and containing the pivoting contact bridges Shaft segments are connected to one another via coupling elements the shift shaft is supported on the shift chamber housing. This includes the respective coupling element two tab-shaped parts, which are connected to each other via a bearing shaft and which on their the Side facing away from the bearing shaft at least two connecting bolts wear, which for connection to the adjacent shaft segments in engage corresponding recesses in these segments.

Das Kupplungselement kann sowohl aus Metall als auch aus einem elektrisch nicht leitenden Material ausreichender Festigkeit bestehen. Um eine gute Torsionssteifigkeit der Schaltwelle sicherzustellen, hat es sich als vorteilhaft erwiesen, wenn der Abstand zwischen benachbarten Verbindungsbolzen des jeweiligen Kupplungselementes größer als der Durchmesser der Lagerwelle ist.The coupling element can be made of metal as well as an electrical one non-conductive material of sufficient strength. Good torsional rigidity the shift shaft, it has proven to be advantageous if the distance between adjacent connecting bolts of the respective coupling element larger than the diameter of the bearing shaft is.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus dem folgenden, anhand von Figuren erläuterten Ausführungsbeispiel. Es zeigen

Figur 1:
die perspektivische Ansicht eines erfindungsgemäßen dreipoligen Leistungsschalters mit abgenommenem Oberteil des Schaltkammergehäuses;
Figur 2:
die perspektivische Ansicht der aus drei Wellensegmenten und drei Kupplungselementen bestehenden Schaltwelle des in Fig.1 dargestellten Leistungsschalters vor ihrem Zusammenbau und
Figur 3:
die in Fig.2 dargestellte Schaltwelle nach ihrer Montage.
Further details and advantages of the invention result from the following exemplary embodiment explained with reference to figures. Show it
Figure 1:
the perspective view of a three-pole circuit breaker according to the invention with the upper part of the interrupter housing removed;
Figure 2:
the perspective view of the switching shaft consisting of three shaft segments and three coupling elements of the circuit breaker shown in Fig.1 before assembly and
Figure 3:
the shift shaft shown in Figure 2 after its assembly.

Bester Weg zur Ausführung der ErfindungBest way to carry out the invention

In Fig.1 ist mit 1 ein dreipoliger Leistungsschalter bezeichnet, welcher ein Schaltkammergehäuse 2 aus Kunststoff mit drei nebeneinander angeordneten und im wesentlichen gleich aufgebauten Schaltkammern 3-5 umfasst. Jede der Schaltkammern 3-5 enthält eine feststehende Kontaktanordnung und eine als schwenkbare Kontaktbrücke 6-8 ausgebildete Kontaktanordnung, welche mit der feststehenden Kontaktanordnung in an sich bekannter Weise zusammenwirkt (zum Aufbau und zur Wirkungsweise derartiger Leistungsschalter vgl. auch die eingangs erwähnte EP 0542 636 B1). Die Kontaktbrücken 6-8 sind über eine gemeinsame Schaltwelle 9 miteinander verbunden. Hierzu ist jede der Kontaktbrücken 6-8 in einem aus Kunststoff bestehenden Wellensegment 10-12 um eine entsprechende Achse 13 (Fig.2) schwenkbar gelagert.In Figure 1, 1 denotes a three-pole circuit breaker, which is a Switch chamber housing 2 made of plastic with three arranged side by side and comprises essentially identical switching chambers 3-5. Each of the switching chambers 3-5 contains a fixed contact arrangement and one designed as a pivotable contact bridge 6-8 contact arrangement, which interacts with the fixed contact arrangement in a manner known per se (on the structure and operation of such circuit breakers see. also the EP 0542 636 B1) mentioned at the beginning. The contact bridges 6-8 are connected to each other via a common control shaft 9. This is each of the contact bridges 6-8 in a plastic shaft segment 10-12 pivoted about a corresponding axis 13 (Fig.2).

Die Fig.2 und 3 geben die Schaltwelle 9 vor und nach ihrer Montage wieder. Dabei werden die Wellensegmente 10-12 (aus Übersichtlichkeitsgründen sind die Kontaktbrücken 6-8 weggelassen) mittels identisch aufgebauter metallischer Kupplungselemente 14, 15 verbunden. Diese umfassen jeweils zwei laschenförmig ausgebildete Teile 16, 17, welche über eine Lagerwelle 18 miteinander verbunden sind und die auf ihrer der Lagerwelle 18 abgewandten Seite jeweils mindestens zwei sich in axialer Richtung erstreckende Verbindungsbolzen 19, 20 bzw. 21, 22 tragen. Dabei ist der Abstand 23 zwischen den benachbarten Verbindungsbolzen 19, 20 bzw. 21, 22 des jeweiligen Kupplungselementes 14, 15 größer als der Durchmesser 24 der Lagerwelle 18. Die Wellensegmente 10-12 weisen jeweils auf ihrer dem entsprechenden Kupplungselement 14, 15 zugewandten Seite zur Aufnahme der Verbindungsbolzen 19-22 Ausnehmungen 25, 26 auf. 2 and 3 show the control shaft 9 before and after its assembly. The shaft segments 10-12 (for reasons of clarity the contact bridges 6-8 omitted) by means of identical metallic Coupling elements 14, 15 connected. These each include two tab-shaped parts 16, 17 which are connected to one another via a bearing shaft 18 are connected and facing away from the bearing shaft 18 Side at least two connecting bolts extending in the axial direction Wear 19, 20 or 21, 22. The distance 23 is between the adjacent connecting bolts 19, 20 and 21, 22 of the respective Coupling element 14, 15 larger than the diameter 24 of the bearing shaft 18. The shaft segments 10-12 each point to the corresponding one Coupling element 14, 15 facing side for receiving the connecting bolts 19-22 recesses 25, 26.

Die Kupplungselemente 14, 15 umfassen im Bereich zwischen den beiden laschenförmigen Teilen 16, 17 mindestens einen sich in axialer Richtung erstreckenden Zapfen 27, welcher mit einem der beiden laschenförmigen Teile 16 bzw. 17 fest verbunden ist und von dem jeweils anderen laschenförmigen Teil 17 bzw. 16 einen vorgegebenen Abstand aufweist, so dass sich auf dieser Seite eine spaltförmige Öffnung 28 ergibt. Der Zapfen 27 dient zur Verbindung der Schaltwelle 9 mit dem nicht dargestellten Schaltschloss des Leistungsschalters 1, wobei ein üblicherweise hebelförmiges Verbindungsteil (Kniehebel) des Schaltschlosses in die spaltförmige Öffnung 28 eingeschoben und durch seitliches Verschieben der Zapfen 27 in eine entsprechende Ausnehmung des Kniehebels eingeführt wird. Der Übergangsbereich zwischen benachbarten Schaltkammern 3-5 ist teilweise als Lager 29 (Fig. 1) für die Lagerwelle 18 des die entsprechenden Wellensegmente 10-12 verbindenden Kupplungselementes 14, 15 ausgebildet (Fig.2, 3).The coupling elements 14, 15 include in the area between the two tab-shaped Parts 16, 17 at least one extending in the axial direction Pin 27, which with one of the two tab-shaped parts 16 or 17 is firmly connected and of the other tab-shaped Part 17 or 16 has a predetermined distance, so that on this Side results in a slit-shaped opening 28. The pin 27 is used for connection the control shaft 9 with the circuit breaker of the circuit breaker, not shown 1, wherein a usually lever-shaped connecting part (toggle lever) of the key switch inserted into the gap-shaped opening 28 and by laterally shifting the pin 27 into a corresponding recess of the toggle lever is inserted. The transition area between neighboring ones Interrupters 3-5 is partially used as a bearing 29 (Fig. 1) for the bearing shaft 18 of the connecting the corresponding shaft segments 10-12 Coupling element 14, 15 formed (Fig.2, 3).

Wie aus den Fig.2 und 3 ersichtlich, wird bei der Montage der Schaltwelle 9 auf die Verbindungsbolzen 19-22 des jeweiligen Kupplungselementes 14, 15 jeweils eine elastische Dichtscheibe 30 angeordnet, deren äußerer Rand 31 die Wellensegmente 10-12 überragt und in eine nutenförmige Ausnehmung 32 des Schaltkammergehäuses 2 eingreift (Fig.1). Durch diese Maßnahme wird verhindert, dass die in den Schaltkammern 3-5 bei Ausbildung von Lichtbögen erzeugten ionisierten Gase entlang der Schaltwelle 9 in die jeweils benachbarten Schaltkammern 3-5 gelangen können. Denn die Gase besitzen in der Regel unterschiedliche Drücke, so dass die elastischen Dichtscheiben 30 im Bereich ihrer äußeren Ränder 31 jeweils gegen eine der beiden Seitenwände des Schaltkammergehäuses 2 im Bereich der nutenförmigen Ausnehmung 32 gedrückt werden.As can be seen from FIGS. 2 and 3, when the selector shaft 9 is assembled on the connecting bolts 19-22 of the respective coupling element 14, 15 In each case an elastic sealing washer 30 is arranged, the outer edge 31 projects beyond the shaft segments 10-12 and into a groove-shaped recess 32 of the interrupter housing 2 engages (Fig.1). This measure will prevents that in the switching chambers 3-5 when arcing occurs generated ionized gases along the switching shaft 9 in the neighboring Switching chambers 3-5 can reach. Because the gases in the Usually different pressures, so that the elastic sealing washers 30 in Area of their outer edges 31 each against one of the two side walls of the switching chamber housing 2 in the region of the groove-shaped recess 32 be pressed.

Die Erfindung ist selbstverständlich nicht auf das vorstehend beschriebene Ausführungsbeispiel beschränkt. So kann der erfindungsgemäße Leistungsschalter beispielsweise auch vier Schaltkammern umfassen. Die Schaltwelle setzt sich in diesem Fall aus vier Wellensegmenten zusammen, die über drei der vorstehend beschriebenen Kupplungselemente miteinander verbunden werden. Ferner können die Kupplungselemente statt aus Metall auch aus einem elektrisch isolierenden Material bestehen (z.B. Kunststoff), sofern sich eine ausreichende Torsionssteifigkeit der Schaltwelle ergibt. Der Zapfen 27 zur Verbindung der Schaltwelle mit dem Schaltschloss kann auch als durchgehender Zapfen ausgebildet sein und die beiden laschenförmigen Teile 16 und 17 ohne Bildung einer spaltförmigen Öffnung 28 miteinander verbinden. In diesem Fall ist der Kniehebel des Schaltschlosses bereits vormontiert an dem Zapfen angeordnet.The invention is of course not limited to that described above Embodiment limited. So the circuit breaker according to the invention for example also include four interrupters. The shift shaft in this case is composed of four shaft segments, which over three the coupling elements described above interconnected become. Furthermore, the coupling elements can also be made of metal instead an electrically insulating material (e.g. plastic), provided that there is sufficient torsional rigidity of the selector shaft. The pin 27 to connect the control shaft with the key switch can also be used as a continuous Be formed and the two tab-shaped parts 16th and 17 connect to one another without forming a gap-shaped opening 28. In In this case, the toggle of the key switch is already pre-assembled on the Cones arranged.

Claims (5)

Mehrpoliger Leistungsschalter mit einem Schaltkammergehäuse (2), in dem eine der Polzahl entsprechende Anzahl von Schaltkammern (3-5) nebeneinander angeordnet ist, sowie einer für alle Pole gemeinsamen Schaltwelle (9), wobei jede Schaltkammer (3-5) eine feststehende und eine als schwenkbare Kontaktbrücke (6-8) ausgebildete Kontaktanordnung umfasst, welche mit der feststehenden Kontaktanordnung zusammenwirkt, mit den Merkmalen: jede der Kontaktbrücken (6-8) ist in einem aus einem Isoliermaterial bestehenden Wellensegment (10-12) angeordnet; die benachbarten Wellensegmente (10-12) sind jeweils über getrennte Kupplungselemente (14,15) miteinander verbunden; die Kupplungselemente (14,15) umfassen jeweils zwei laschenförmig ausgebildete Teile (16,17), welche über eine Lagerwelle (18) miteinander verbunden sind, und die auf ihrer der Lagerwelle (18) abgewandten Seite jeweils mindestens zwei sich in axialer Richtung erstreckende Verbindungabolzen (19-22) tragen; die Wellensegmente (10-12) weisen jeweils auf ihrer dem entsprechenden Kupplungselement (14,15) zugewandten Seite zur Aufnahme der Verbindungsbolzen (19-22) Ausnehmungen (25,26) auf, und der Übergangsbereich des Schaltkammergehäuses (2) zwischen benachbarten Schaltkammern (3-5) ist mindestens teilweise als Lager (29) für die Lagerwelle (18) des die entsprechenden Wellensegmente (10-12) verbindenden Kupplungselementes (14,15) ausgebildet. Multi-pole circuit breaker with a switching chamber housing (2) in which a number of switching chambers (3-5) corresponding to the number of poles is arranged side by side, and a switching shaft (9) common to all poles, each switching chamber (3-5) having a fixed and a comprises a contact arrangement designed as a pivotable contact bridge (6-8), which interacts with the fixed contact arrangement, with the features : each of the contact bridges (6-8) is arranged in a shaft segment (10-12) consisting of an insulating material; the adjacent shaft segments (10-12) are each connected to one another via separate coupling elements (14, 15); the coupling elements (14, 15) each comprise two tab-shaped parts (16, 17), which are connected to one another via a bearing shaft (18), and the side of the coupling shaft (18) facing away from the bearing shaft (18) each has at least two connecting bolts extending in the axial direction (19-22) wear; the shaft segments (10-12) each have recesses (25, 26) on their side facing the corresponding coupling element (14, 15) for receiving the connecting bolts (19-22), and the transition area of the switching chamber housing (2) between adjacent switching chambers (3-5) is at least partially designed as a bearing (29) for the bearing shaft (18) of the coupling element (14, 15) connecting the corresponding shaft segments (10-12). Mehrpoliger Leistungsschalter nach Anspruch 1, dadurch gekennzeichnet, dass die Kupplungselemente (14,15) aus Metall oder aus einem elektrisch isolierenden Material bestehen.Multipole circuit breaker according to claim 1, characterized in that the coupling elements (14, 15) consist of metal or of an electrically insulating material. Mehrpoliger Leistungsschalter nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Abstand (23) zwischen benachbarten Verbindungsbolzen (19,20;21,22) des jeweiligen Kupplungselementes (14,15) größer als der Durchmesser (24) der Lagerwelle (18) ist.Multipole circuit breaker according to claim 1 or 2, characterized in that the distance (23) between adjacent connecting bolts (19, 20; 21, 22) of the respective coupling element (14, 15) is greater than the diameter (24) of the bearing shaft (18) . Mehrpoliger Leistungsschalter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das jeweilige Kupplungselement (14,15) im Bereich zwischen den beiden laschenförmigen Teilen (16,17) mindestens einen sich in axialer Richtung erstreckenden Zapfen (27) umfasst, welcher mit mindestens einem der beiden laschenförmigen Teile (16,17) fest verbunden und von dem jeweils anderen laschenförmigen Teil (17,16) einen vorgegebenen Abstand aufweist.Multi-pole circuit breaker according to one of claims 1 to 3, characterized in that the respective coupling element (14, 15) in the region between the two tab-shaped parts (16, 17) comprises at least one pin (27) extending in the axial direction, which with at least one of the two tab-shaped parts (16, 17) is firmly connected and has a predetermined distance from the other tab-shaped part (17, 16). Mehrpoliger Leistungsschalter nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass auf den Verbindungsbolzen (19-22) des jeweiligen Kupplungselementes (14,15) mindestens eine elastische Dichtscheibe (30) angeordnet ist, deren äußerer Rand (31) in eine nutenförmige Ausnehmung (32) des Schaltkammergehäuses (2) eingreift.Multipole circuit breaker according to one of Claims 1 to 4, characterized in that at least one elastic sealing washer (30) is arranged on the connecting bolt (19-22) of the respective coupling element (14, 15), the outer edge (31) of which is in a groove-shaped recess (32) of the interrupter housing (2) engages.
EP00104332A 1999-03-08 2000-03-02 Multi-pole circuit breaker Expired - Lifetime EP1037239B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19910032 1999-03-08
DE19910032A DE19910032C1 (en) 1999-03-08 1999-03-08 Multiple pole switch for power switching, has chamber housing containing adjacent switch chambers with common switch shaft, in which each chamber has interacting fixed, pivotable contacts

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EP1037239A2 true EP1037239A2 (en) 2000-09-20
EP1037239A3 EP1037239A3 (en) 2001-12-05
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KR100988100B1 (en) * 2008-07-25 2010-10-18 엘에스산전 주식회사 Mold cased circuit breaker
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DE10129505C1 (en) * 2001-06-19 2002-10-10 Moeller Gmbh Multi-pole low voltage switch with dual housing has common switch chamber housing with drive mechanism on upper part with drive element coupled to at least one connecting element
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CN101989501A (en) * 2009-07-29 2011-03-23 西门子公司 Moving contact component of electrical switch
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Also Published As

Publication number Publication date
EP1037239B1 (en) 2003-07-23
DE19910032C1 (en) 2000-04-06
US6259338B1 (en) 2001-07-10
EP1037239A3 (en) 2001-12-05

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