EP2263247B1 - Switching device - Google Patents

Switching device Download PDF

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Publication number
EP2263247B1
EP2263247B1 EP09717752A EP09717752A EP2263247B1 EP 2263247 B1 EP2263247 B1 EP 2263247B1 EP 09717752 A EP09717752 A EP 09717752A EP 09717752 A EP09717752 A EP 09717752A EP 2263247 B1 EP2263247 B1 EP 2263247B1
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EP
European Patent Office
Prior art keywords
switchgear
triggering
switching
spring
lever
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EP09717752A
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German (de)
French (fr)
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EP2263247A1 (en
Inventor
Adolf Tetik
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 GmbH
Original Assignee
Moeller Gebaudeautomation GmbH
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Priority to PL09717752T priority Critical patent/PL2263247T3/en
Publication of EP2263247A1 publication Critical patent/EP2263247A1/en
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Publication of EP2263247B1 publication Critical patent/EP2263247B1/en
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    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/40—Combined electrothermal and electromagnetic mechanisms
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2472—Electromagnetic mechanisms with rotatable armatures

Definitions

  • the invention relates to a switching device according to the preamble of claim 1.
  • Switching devices are known which, in the event of excessive currents in a line network, which continue over a predefinable time, separate this line network from a supply network in order to prevent the further supply of electrical current.
  • Switching devices are further known which, in the event of a short circuit in a line network, separate this line network from a supply network in order to prevent the further supply of electrical current.
  • Such switching devices therefore have a so-called.
  • Overcurrent tripping device or a short-circuit tripping device which trigger a mechanical disconnecting device in response, which separates the switching contacts of the switching device, and prevents further current flow.
  • the overcurrent release device or the short-circuit release device usually act mechanically on a mechanical release of the separation device.
  • the overcurrent tripping device or the short-circuit tripping device does not act directly on the disconnecting device, and therefore does not initiate it by a direct or transmission element-free mechanical actuation, since the overcurrent tripping device or the short-circuit tripping device is often arranged as an assembly away from the disconnecting device in the switching device are.
  • Such trained switching devices therefore have a mechanical link between the overcurrent tripping device and the short-circuit tripping device and the separation device.
  • a disadvantage of this is that the mechanical effect which is exerted by the overcurrent tripping device or the short-circuit tripping device on the separating device, can lead to damage of the overcurrent tripping device, the short-circuit tripping device, the connecting link and / or the separating device.
  • Such damage to the switching device means that it will not trigger at the next occasion in which the switching device should be triggered. Since such damage in many cases are not visible from the outside, such damaged switching devices are not replaced, and thus represent a serious threat to people and equipment.
  • the US 4 503 408 A describes a circuit breaker with a bimetallic actuator, which actuates a switching mechanism via a tripping shaft.
  • the release shaft has a first lever arm, for actuation by the bimetallic element, and a second lever arm for Actuation by an electromagnetic short-circuit release.
  • a locking means is arranged for locking a Austsammlungteils a switching mechanism.
  • the second lever arm further comprises leaf springs, each carrying a magnetic sheet, which are provided for attraction by the short-circuit release.
  • the DE 10 2006 005697 A1 discloses a device for triggering a scbutzschalter with an overcurrent release and a short-circuit release, both of which control a switch lock via a rigid trip shaft.
  • the object of the invention is therefore to provide a switching device of the type mentioned, with which the mentioned disadvantages can be avoided, in which the Functionality of such switching devices can be better ensured, and in which damage to the switching device can be avoided in Berieb.
  • the Fig. 1 shows switching device 1, preferably power switch, with at least one input terminal 2 and at least one output terminal 3 for connecting electrical conductors, and with a first switching contact 4 and a second switching contact, wherein the switching contacts 4 in a closed position, a current path between the input terminal 2 and the output terminal 3, wherein a separating device 5 is provided for separating the first switching contact 4 and the second switching contact, and wherein an overcurrent tripping device 6 and / or a short-circuit tripping device 7 are provided, which are for triggering the separating device 5 with this by means of a reversing lever 8 in mechanical operative connection , wherein the lever 8 at least a first lever arm (9) and a second lever arm 10, wherein the first lever arm 9 has a Anêtfortsatz 11 for driving by the overcurrent tripping device 6 and / or the KurzInstitutauslierevorides 7, and wherein the second lever arm 10 an actuating extension 12 for triggering the separating device.
  • 5 includes, wherein the actuating extension
  • Fig. 1 shows a series of modules of a preferred embodiment of a switching device 1 according to the invention in axonometric exploded view. Shown is an embodiment of a switching device 1 with three switching paths or current paths, wherein any predeterminable number of switching paths or switchable current paths can be provided. Switching devices 1 according to the invention are preferably provided with one, two, three or four current paths. According to the number of current paths respectively the same number of input terminals 2 and output terminals 3 are provided. In the figures, only housing-fixed parts of the input terminals 2 and output terminals 3 are shown.
  • the respective input terminals 2 and output terminals 3 generally comprise in addition to the illustrated parts, in each case at least one clamping screw, and preferably in each case at least one movable jaw by means of the clamping screw.
  • the switching device 1 comprises an insulating housing 21, which in the preferred embodiment comprises a lower housing shell 22 and an upper housing shell 23.
  • the at least one first switching contact 4 is in a closed position on the at least one second switching contact, which is not visible in the illustrated embodiment within the assembly of the arc quenching chamber 29.
  • Switching devices 1 have an overcurrent tripping device 6 and / or a short-circuit tripping device 7.
  • Fig. 2 shows a preferred embodiment of a Arrangement of an overcurrent tripping device 6 and a short-circuit tripping device 7.
  • the short-circuit tripping device 7 is formed from a U-shaped yoke 31 and a hinged armature 26, wherein the U-shaped yoke 31 is attached to a first conductor 30 of the current path, which is preferably associated with the input terminal 2 and / or the output terminal 3.
  • the hinged armature 26 is rotatably supported, which by a hinged armature spring 32 in a rest position, as in Fig. 2 is shown, is forced, at which rest position the hinged armature 26 protrudes from the U-shaped yoke 31.
  • the overcurrent tripping device 6 comprises a bimetal element 33, which is attached to the first conductor 30.
  • the bimetallic element 33 is directly traversed by current, so is itself part of the current path, and is directly heated by the stream.
  • the bimetallic element 33 is completely or additionally heated indirectly, for example by a current-carrying conductor is arranged on the bimetallic element 33. With increasing heating of the bimetallic element 33 due to the flow of current, this is bent more and more.
  • a switching device 1 the overcurrent tripping device 6 and / or the short-circuit tripping device 7 does not act directly on the separating device 5, but rather on a reversing lever 8, as in about Fig. 2 is shown.
  • Fig. 2 shows an arrangement of a separator 5, a reversing lever 8, an overcurrent tripping device 6 and a short-circuit tripping device 7.
  • Such a Deflection lever 8 has at least a first lever arm 9 and a second lever arm 10, wherein the first lever arm 9 has a An horrfortsatz 11, which - is provided for driving through the first end 28 of the hinged armature 26 - in the illustrated preferred embodiment.
  • the first end 28 of the hinged armature 26 acts on the control extension 11 of the reversing lever 8.
  • a switching extension 11 is provided for each switching path.
  • the second lever arm 10 comprises an actuating extension 12 for triggering the separating device 5.
  • the separating device 5 is designed as a switching mechanism 17 with a latchable pawl 18.
  • the switching mechanism 17 is a force-storing link between an actuating lever 24 and the switching contacts 4.
  • the switching lock 17 is stretched in the objective training in a first step by moving the operating lever 24 in a first direction, wherein a spring energy storage is tensioned, which upon release of the Switching lock 17 ensures fast and safe separation of the switching contacts 4.
  • the clamping operation is terminated by a latching, latching or latching of the pawl 18 on a housing-fixed part of the switching mechanism 17.
  • the switching contacts are closed by movement of the actuating lever 24 in a second direction.
  • the latching connection of the pawl 24 with the housing-fixed part of the switching mechanism 17 is designed such that a predetermined movement of the pawl 18 in a predetermined direction unlocks the switching mechanism 17, whereby the spring force memory is released and the switching contacts 17 are disconnected.
  • Such preferably used for use switching mechanism 17 is for example in the German Offenlegungsschriften DE 42 27 213 A1 as well as the German patent DE 44 42 417 C1 described.
  • the reversing lever 8 is moved by a movement of the overcurrent tripping device 6 and / or the short-circuit tripping device 7, in particular by a movement of the hinged armature 26, comes - after a predetermined movement of the reversing lever 8 - the actuating extension 12 with the pawl 18 in engagement, and moves the pawl 18 so far that the snap-in connection with the housing-fixed part of the switching mechanism 17 is released, whereby the switching mechanism 17 unlocked, the spring force memory is released and the switching contacts 4 are disconnected.
  • the actuating extension 12 is resilient, each type of resilient compliance can be provided, such as the formation of the actuating extension 12 as a spring, comprising metal or plastic, such as Elastomers.
  • Fig. 2 shows a preferred embodiment of a switching mechanism 17 with an inventively designed lever 8, wherein the switching mechanism 17 is shown in a partially broken view.
  • the pawl 18 is in the latched position, and the actuating lever 24 is in the position of open switch contacts 4.
  • the actuating extension 12 is not in engagement with the pawl 18, so that neither the overcurrent tripping device 6 nor the short-circuit tripping device 7 have detected a tripping situation.
  • the reversing lever 8 is moved or rotated counterclockwise by the overcurrent tripping device 6 or the short-circuit tripping device 7, whereby the resiliently formed actuating extension 12 comes into engagement with the pawl 18, and this, after a predefinable deflection, the switching mechanism 17 triggers.
  • the spring forces of the resiliently formed actuating extension 12 are dimensioned such that upon release or unlatching of the pawl 18 no significant deformations occur on the actuating extension 12. This is not a problem, since the forces for a release or unlatching of the pawl 18 are very low.
  • it may come after triggering or unlatching of the pawl 18 due to the strong deformation of the bimetal 33 of the overcurrent tripping device 6 to a further rotation of the reversing lever 8, resulting in damage to the pawl 18th , the deflection lever 8 and / or the bimetallic element 33 can lead.
  • the resilient, resilient design of the actuating extension 12 in a movement direction of the deflection lever 8 for triggering the separation device 5 can be achieved that in a further rotation of the reversing lever 8 after the release or unlatching of the pawl 18, the pawl 18 is not further rotated or deflected is and is exposed to excessive load, whereby the pawl 18 and the entire switching mechanism 17 are spared from destruction. Due to the resilient design of the actuating extension 12, a further rotation of the reversing lever 8 is possible without damaging the reversing lever 8 would be expected. As a result, the overcurrent tripping device 6, the short-circuit tripping device 7 and the hinged armature 26 can also be protected against damage.
  • the deflection lever 8 is formed as a triggering shaft 19, wherein the triggering shaft 19 has a shaft body 20, which in a housing 21 of the Switching device 1 is rotatably mounted. In the area of the intended mounting of the shaft body 20, this preferably has axial guide webs 27 in order to prevent a displacement of the release shaft 19 in the axial direction.
  • the actuating extension 12 is designed as a spring 13, preferably as a metal spring, wherein each spring material can be provided. It is preferably provided that the actuating attachment 12 is designed as a steel spring.
  • the spring 13 is at least partially formed as a torsion spring 14, whereby a particularly controlled elastic effect in the intended loading direction, can be achieved.
  • the torsion spring 14 is at least once wrapped completely around the shaft body 20 of the trip shaft 19.
  • a main resilient action of the actuating extension 12 can be achieved radially to the direction of rotation of the trip shaft 19.
  • the bell crank 8 has a support bearing 15, on which, the, a torsion spring 14 comprehensive, actuating extension 12 is supported, and / or that the spring 14 on a support 16 supported, which is arranged on the control extension 11.
  • the support bearing 15 and the support 16 are in the 3 and 4 particularly well recognizable.
  • the support bearing 15 is formed in the illustrated preferred embodiment as an L-shaped stop on which the spring 13 is fixed, and is held by the spring force.
  • the support 16 is formed as a transverse strut against which an angled end of the spring 13 abuts.
  • Fig. 3 shows a trip shaft 19 in the operating arrangement before or on release of the pawl 18, wherein it can be seen clearly that the actuating extension 12 rests against the support bearing 15.
  • Fig. 4 shows the same triggering wave as in Fig. 3 However, this was so far twisted that the actuating extension 12 further on the - not shown - pawl 18 rests, but without moving them further, wherein the actuating extension 12 is lifted from the support bearing 15.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Abstract

The invention relates to a switching device (1), preferably a power switch, comprising at least one input terminal (2) and at least one output terminal (3) for connecting electrical conductors, and a first switching contact (4) and a second switching contact, said switching contacts closing, in a closed position, a current path between the input terminal (2) and the output terminal (3). A separating device is provided for separating the first switching contact (4) and the second switching contact, and an overcurrent release device (6) and/or a short-circuit release device (7) are mechanically actively connected to the separating device (5) by means of a tripper device (8) in order to be able to trigger the separating device. The tripper device (8) comprises at least one first lever arm (9) and a second lever arm (10), the first lever arm (9) comprising a control projection (11) enabling control by means of the overcurrent release device (6) and/or the short-circuit release device (7), and the second lever arm (10) comprising an actuating projection (12) for triggering the separating device (5). According to the invention, in order to ensure operability, the actuating projection is elastically flexible.

Description

Die Erfindung betrifft ein Schaltgerät gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a switching device according to the preamble of claim 1.

Es sind Schaltgeräte bekannt, welche bei überhöhten Strömen in einem Leitungsnetz, welche über eine vorgebbare Zeit andauern, dieses Leitungsnetz von einem Versorgungsnetz trennen, um die weitere Zufuhr elektrischen Stromes zu verhindern. Es sind weiters Schaltgeräte bekannt, welche bei einem Kurzschluss in einem Leitungsnetz dieses Leitungsnetz von einem Versorgungsnetz trennen, um die weitere Zufuhr elektrischen Stromes zu verhindern. Derartige Schaltgeräte weisen daher eine sog. Überstromauslösevorrichtung bzw. eine Kurzschlussauslösevorrichtung auf, welche bei einem Ansprechen eine mechanische Trennvorrichtung auslösen, welche die Schaltkontakte des Schaltgeräts trennt, und den weiteren Stromfluss verhindert. Die Überstromauslösevorrichtung bzw. die Kurzschlussauslösevorrichtung wirken dabei in der Regel mechanisch auf einen mechanischen Auslöser der Trennvorrichtung.Switching devices are known which, in the event of excessive currents in a line network, which continue over a predefinable time, separate this line network from a supply network in order to prevent the further supply of electrical current. Switching devices are further known which, in the event of a short circuit in a line network, separate this line network from a supply network in order to prevent the further supply of electrical current. Such switching devices therefore have a so-called. Overcurrent tripping device or a short-circuit tripping device, which trigger a mechanical disconnecting device in response, which separates the switching contacts of the switching device, and prevents further current flow. The overcurrent release device or the short-circuit release device usually act mechanically on a mechanical release of the separation device.

Es ist bekannt, dass die Überstromauslösevorrichtung bzw. die Kurzschlussauslösevorrichtung nicht direkt auf die Trennvorrichtung einwirken, und diese daher nicht durch eine unmittelbare bzw. übertragungsgliedfreie mechanische Betätigung auslösen, da die Überstromauslösevorrichtung bzw. die Kurzschlussauslösevorrichtung vielfach als Baugruppe von der Trennvorrichtung entfernt in dem Schaltgerät angeordnet sind. Derartig ausgebildete Schaltgeräte weisen daher ein mechanisches Verbindungslied zwischen der Überstromauslösevorrichtung bzw. der Kurzschlussauslösevorrichtung und der Trennvorrichtung auf. Nachteilig daran ist, dass die mechanische Wirkung, welche durch die Überstromauslösevorrichtung bzw. die Kurzschlussauslösevorrichtung auf die Trennvorrichtung ausgeübt wird, zu einer Beschädigung der Überstromauslösevorrichtung, der Kurzschlussauslösevorrichtung, des Verbindungslieds und/oder der Trennvorrichtung führen kann. Eine derartige Beschädigung des Schaltgeräts führt dazu, dass dieses beim nächsten Anlassfall, bei welchem das Schaltgerät ausgelöst werden sollte, nicht auslösen wird. Da derartige Beschädigungen in vielen Fällen von außen nicht erkennbar sind, werden derartig beschädigte Schaltgeräte nicht ausgetauscht, und stellen somit eine ernsthafte Gefährdung für Menschen und Anlagen dar.It is known that the overcurrent tripping device or the short-circuit tripping device does not act directly on the disconnecting device, and therefore does not initiate it by a direct or transmission element-free mechanical actuation, since the overcurrent tripping device or the short-circuit tripping device is often arranged as an assembly away from the disconnecting device in the switching device are. Such trained switching devices therefore have a mechanical link between the overcurrent tripping device and the short-circuit tripping device and the separation device. A disadvantage of this is that the mechanical effect which is exerted by the overcurrent tripping device or the short-circuit tripping device on the separating device, can lead to damage of the overcurrent tripping device, the short-circuit tripping device, the connecting link and / or the separating device. Such damage to the switching device means that it will not trigger at the next occasion in which the switching device should be triggered. Since such damage in many cases are not visible from the outside, such damaged switching devices are not replaced, and thus represent a serious threat to people and equipment.

Die US 4 503 408 A beschreibt einen Schutzschalter mit einem Bimetallauslöser, welcher über eine Auslösewelle ein Schaltschloss betätigt. Die Auslösewelle weist dabei einen ersten Hebelarm auf, zur Betätigung durch das Bimetallelement, sowie einen zweiten Hebelarm zur Betätigung durch einen elektromagnetischen Kurzschlussauslöser. An dem zweiten Hebelarm ist weiters ein Sperrmittel angeordnet, zum Sperren eines Austöseteils eines Schaltschlosses. Der zweite Hebelarm weist weiters Blattfedern auf, welche jeweils ein magnetisches Blatt tragen, welches zur Anziehung durch den Kurzschlussauslöser vorgesehen sind.The US 4 503 408 A describes a circuit breaker with a bimetallic actuator, which actuates a switching mechanism via a tripping shaft. The release shaft has a first lever arm, for actuation by the bimetallic element, and a second lever arm for Actuation by an electromagnetic short-circuit release. At the second lever arm further comprises a locking means is arranged for locking a Austöseteils a switching mechanism. The second lever arm further comprises leaf springs, each carrying a magnetic sheet, which are provided for attraction by the short-circuit release.

Die DE 10 2006 005697 A1 offenbart eine Einrichtung zur Auslösung eines Scbutzschalters mit einem Überstromauslöser und einem Kurzschlussauslöser, welche beide über eine starre Auslösewelle ein Schaltschloss ansteuern.The DE 10 2006 005697 A1 discloses a device for triggering a scbutzschalter with an overcurrent release and a short-circuit release, both of which control a switch lock via a rigid trip shaft.

Aufgabe der Erfindung ist es daher ein Schaltgerät der eingangs genannten Art anzugeben, mit welchem die genannten Nachteile vermieden werden können, bei welchem die Funktionsfähigkeit derartiger Schaltgeräte besser sichergestellt werden kann, und bei welchen Beschädigungen des Schaltgeräts im Berieb vermieden werden können.The object of the invention is therefore to provide a switching device of the type mentioned, with which the mentioned disadvantages can be avoided, in which the Functionality of such switching devices can be better ensured, and in which damage to the switching device can be avoided in Berieb.

Erfindungsgemäß wird dies durch die Merkmale des Patentanspruches 1 erreicht.This is achieved by the features of claim 1 according to the invention.

Dadurch kann eine Beschädigung des Schaltgeräts im Betrieb vermieden werden, und sichergestellt werden, dass kein schadhaftes bzw. nicht funktionsfähiges Schaltgerät weiter verwendet wird. Dadurch können insbesondere Beschädigungen der Überstromauslösevorrichtung, der Kurzschlussauslösevorrichtung des Umlenkhebels und/oder der Trennvorrichtung, insbesondere aufgrund der mechanischen Wirkung, welche die Überstromauslösevorrichtung bzw. die Kurzschlussauslösevorrichtung auf den Umlenkhebel bzw. die Trennvorrichtung ausüben, vermieden werden.As a result, damage to the switching device during operation can be avoided, and it can be ensured that no faulty or non-functional switching device will continue to be used. In particular, damage to the overcurrent tripping device, the short-circuit tripping device of the reversing lever and / or the disconnecting device, in particular due to the mechanical effect exerted by the overcurrent tripping device or the short-circuit tripping device on the reversing lever or the disconnecting device, can thereby be avoided.

Die Unteransprüche, welche ebenso wie der Patentanspruch 1 gleichzeitig einen Teil der Beschreibung bilden, betreffen weitere vorteilhafte Ausgestaltungen der Erfindung.The subclaims, which as well as the patent claim 1 simultaneously form part of the description, relate to further advantageous embodiments of the invention.

Die Erfindung wird unter Bezugnahme auf die beigeschlossenen Zeichnungen, in welchen lediglich bevorzugte Ausführungsformen beispielhaft dargestellt sind, näher beschrieben. Dabei zeigt:

  • Fig. 1 eine bevorzugte Ausführungsform eines erfindungsgemäßen Schaltgeräts in axonometrischer Explosionsdarstellung;
  • Fig. 2 eine bevorzugte Ausführungsform eines Schaltschlosses zusammen mit einem Umlenkhebel in Seitenriss;
  • Fig. 3 der Umlenkhebel gemäß Fig. 1 und 2 in einer ersten axonometrischen Darstellung;
  • Fig. 4 der Umlenkhebel gemäß Fig. 1 und 2 in einer zweiten axonometrischen Darstellung; und
  • Fig. 5 eine Überstromauslösevorrichtung, eine Kurzschlussauslösevorrichtung und erste Schalkontakte gemäß Fig. 1 in axonometrischer Darstellung.
The invention will be described in more detail with reference to the accompanying drawings, in which only preferred embodiments are shown by way of example. Showing:
  • Fig. 1 a preferred embodiment of a switching device according to the invention in axonometric exploded view;
  • Fig. 2 a preferred embodiment of a switching mechanism together with a lever in side elevation;
  • Fig. 3 the lever according to Fig. 1 and 2 in a first axonometric representation;
  • Fig. 4 the lever according to Fig. 1 and 2 in a second axonometric representation; and
  • Fig. 5 an overcurrent tripping device, a short-circuit tripping device and first Schalkontakte according to Fig. 1 in axonometric representation.

Die Fig. 1 zeigt Schaltgerät 1, vorzugsweise Leistungsschalter, mit wenigstens einer Eingangsklemme 2 und wenigstens einer Ausgangsklemme 3 zum Anschluss elektrischer Leiter, sowie mit einem ersten Schaltkontakt 4 und einem zweiten Schaltkontakt, wobei die Schaltkontakte 4 in einer geschlossenen Stellung einen Strompfad zwischen der Eingangsklemme 2 und der Ausgangklemme 3 schließen, wobei eine Trennvorrichtung 5 zum Trennen des ersten Schaltkontaktes 4 und des zweiten Schaltkontaktes vorgesehen ist, und wobei eine Überstromauslösevorrichtung 6 und/oder eine Kurzschlussauslösevorrichtung 7 vorgesehen sind, welche zum Auslösen der Trennvorrichtung 5 mit dieser mittels eines Umlenkhebels 8 in mechanischer Wirkverbindung stehen, wobei der Umlenkhebel 8 wenigstens einen ersten Hebelarm (9) und einen zweiten Hebelarm 10 aufweist, wobei der erste Hebelarm 9 einen Ansteuerfortsatz 11 zur Ansteuerung durch die Überstromauslösevorrichtung 6 und/oder die Kurzschlussauslösevorrichtung 7 aufweist, und wobei der zweite Hebelarm 10 einen Betätigungsfortsatz 12 zum Auslösen der Trennvorrichtung 5 umfasst, wobei der Betätigungsfortsatz 12 federnd nachgiebig ausgebildet ist.The Fig. 1 shows switching device 1, preferably power switch, with at least one input terminal 2 and at least one output terminal 3 for connecting electrical conductors, and with a first switching contact 4 and a second switching contact, wherein the switching contacts 4 in a closed position, a current path between the input terminal 2 and the output terminal 3, wherein a separating device 5 is provided for separating the first switching contact 4 and the second switching contact, and wherein an overcurrent tripping device 6 and / or a short-circuit tripping device 7 are provided, which are for triggering the separating device 5 with this by means of a reversing lever 8 in mechanical operative connection , wherein the lever 8 at least a first lever arm (9) and a second lever arm 10, wherein the first lever arm 9 has a Ansteuerfortsatz 11 for driving by the overcurrent tripping device 6 and / or the Kurzschlussauslösevorrichtung 7, and wherein the second lever arm 10 an actuating extension 12 for triggering the separating device. 5 includes, wherein the actuating extension 12 is formed resiliently.

Dadurch kann eine Beschädigung des Schaltgeräts 1 im Betrieb vermieden werden, und sichergestellt werden, dass kein schadhaftes bzw. nicht funktionsfähiges Schaltgerät 1 weiter verwendet wird. Dadurch können insbesondere Beschädigungen der Überstromauslösevorrichtung 6, der Kurzschlussauslösevorrichtung 7 des Umlenkhebels 8 und/oder der Trennvorrichtung 5, insbesondere aufgrund der mechanischen Wirkung, welche die Überstromauslösevorrichtung 6 bzw. die Kurzschlussauslösevorrichtung 7 auf den Umlenkhebel 8 bzw. die Trennvorrichtung 5 ausüben, vermieden werden.As a result, damage to the switching device 1 during operation can be avoided, and it can be ensured that no faulty or non-functional switching device 1 is used further. Damage to the overcurrent tripping device 6, the short-circuit tripping device 7 of the reversing lever 8 and / or the disconnecting device 5, in particular due to the mechanical effect which the overcurrent tripping device 6 or the short-circuit tripping device 7 exert on the reversing lever 8 or the disconnecting device 5, can thereby be avoided.

Fig. 1 zeigt eine Reihe von Baugruppen einer bevorzugten Ausführungsform eines erfindungsgemäßen Schaltgeräts 1 in axonometrischer Explosionsdarstellung. Dargestellt ist eine Ausführung eines Schaltgeräts 1 mit drei Schaltstrecken bzw. Strompfaden, wobei jede vorgebbare Anzahl an Schaltstrecken bzw. schaltbaren Strompfaden vorgesehen sein kann. Vorzugweise sind erfindungsgemäße Schaltgeräte 1 mit einem, zwei, drei oder vier Strompfaden vorgesehen. Entsprechend der Anzahl an Strompfaden sind jeweils die selbe Anzahl an Eingangsklemmen 2 bzw. Ausgangsklemmen 3 vorgesehen. In den Figuren sind jeweils lediglich gehäusefeste Teile der Eingangsklemmen 2 bzw. Ausgangsklemmen 3 dargestellt. Die betreffenden Eingangsklemmen 2 bzw. Ausgangsklemmen 3 umfassen in der Regel zusätzlich zu den dargestellten Teilen, jeweils wenigstens eine Klemmschraube, sowie bevorzugt jeweils wenigstens eine mittels der Klemmschraube bewegliche Klemmbacke. Fig. 1 shows a series of modules of a preferred embodiment of a switching device 1 according to the invention in axonometric exploded view. Shown is an embodiment of a switching device 1 with three switching paths or current paths, wherein any predeterminable number of switching paths or switchable current paths can be provided. Switching devices 1 according to the invention are preferably provided with one, two, three or four current paths. According to the number of current paths respectively the same number of input terminals 2 and output terminals 3 are provided. In the figures, only housing-fixed parts of the input terminals 2 and output terminals 3 are shown. The respective input terminals 2 and output terminals 3 generally comprise in addition to the illustrated parts, in each case at least one clamping screw, and preferably in each case at least one movable jaw by means of the clamping screw.

Das Schaltgerät 1 umfasst in der dargestellten bevorzugten Ausführung ein Isolierstoffgehäuse 21, welches in der bevorzugten Ausführungsform eine untere Gehäuseschale 22 und eine obere Gehäuseschale 23 umfasst. Der wenigstens eine erste Schaltkontakt 4 liegt in einer geschlossenen Stellung auf dem wenigstens einen zweiten Schaltkontakt, welcher bei der dargestellten Ausführungsform nicht sichtbar innerhalb der Baugruppe der Lichtbogenlöschkammer 29 angeordnet ist.In the preferred embodiment shown, the switching device 1 comprises an insulating housing 21, which in the preferred embodiment comprises a lower housing shell 22 and an upper housing shell 23. The at least one first switching contact 4 is in a closed position on the at least one second switching contact, which is not visible in the illustrated embodiment within the assembly of the arc quenching chamber 29.

Erfindungsgemäße Schaltgeräte 1 weisen eine Überstromauslösevorrichtung 6 und/oder eine Kurzschlussauslösevorrichtung 7 auf. Fig. 2 zeigt eine bevorzugte Ausführungsform einer Anordnung aus einer Überstromauslösevorrichtung 6 und einer Kurzschlussauslösevorrichtung 7.Switching devices 1 according to the invention have an overcurrent tripping device 6 and / or a short-circuit tripping device 7. Fig. 2 shows a preferred embodiment of a Arrangement of an overcurrent tripping device 6 and a short-circuit tripping device 7.

Die Kurzschlussauslösevorrichtung 7 wird aus einem u-förmigen Joch 31 und einem Klappanker 26 gebildet, wobei das U-förmige Joch 31 an einem ersten Leiter 30 des Strompfades befestigt ist, welcher vorzugsweise der Eingangsklemme 2 und/oder der Ausgangsklemme 3 zugeordnet ist. An dem U-förmigen Joch 31 ist der Klappanker 26 drehbar gelagert, welcher durch eine Klappankerfeder 32 in eine Ruheposition, wie in Fig. 2 dargestellt, gezwungen wird, bei welcher Ruheposition der Klappanker 26 von dem U-förmigen Joch 31 absteht. Beim Auftreten eines Kurzschlusses sind die Ströme durch das Schaltgerät 1 derart hoch, dass das U-förmige Joch 31 den Klappanker 26 anzieht, wodurch ein erstes Ende 28 des Klappankers 26 ausgelenkt wird, und wobei dieses erste Ende 28 des Klappankers 26 die weitere Auslösung der Trennvorrichtung 5, und folglich das Trennen der Schaltkontakte 4, verursacht.The short-circuit tripping device 7 is formed from a U-shaped yoke 31 and a hinged armature 26, wherein the U-shaped yoke 31 is attached to a first conductor 30 of the current path, which is preferably associated with the input terminal 2 and / or the output terminal 3. At the U-shaped yoke 31, the hinged armature 26 is rotatably supported, which by a hinged armature spring 32 in a rest position, as in Fig. 2 is shown, is forced, at which rest position the hinged armature 26 protrudes from the U-shaped yoke 31. When a short circuit occurs, the currents through the switching device 1 are so high that the U-shaped yoke 31 attracts the hinged armature 26, whereby a first end 28 of the hinged armature 26 is deflected, and wherein this first end 28 of the hinged armature 26, the further release of Separator 5, and thus the separation of the switching contacts 4, causes.

Die Überstromauslösevorrichtung 6 umfasst ein Bimetallelement 33, welches an dem ersten Leiter 30 befestigt ist. Bei der dargestellten bevorzugten Ausführungsform wird das Bimetallelement 33 direkt von Strom durchflossen, ist also selbst Teil des Strompfades, und wird unmittelbar vom Strom erwärmt. Es kann jedoch auch vorgesehen sein, dass das Bimetallelement 33 vollständig oder zusätzlich indirekt beheizt wird, indem etwa ein stromdurchflossener Leiter auf dem Bimetallelement 33 angeordnet ist. Mit steigender Erwärmung des Bimetallelements 33 aufgrund des Stromflusses, wird dieses immer weiter verbogen. Bei einem vorgebbaren Grad der Verbiegung des Bimetallelements 33, welcher proportional einer vorgebbaren Erwärmung des Leitungsnetzes ist, bewegt diese den Umlenkhebel 8, welcher - wie bereits dargelegt die weitere Auslösung der Trennvorrichtung 5, und folglich das Trennen der Schaltkontakte 4, verursacht. Besonders bevorzugt ist - wie auch in den Fig. 2 und 5 dargestellt vorgesehen, dass in dem Bimetallelement 33 eine Justageschraube 34 angeordnet ist, welche auf den Umlenkhebel 8 wirkt. Mittels der Justageschraube 34 kann dabei der Grad der Verbiegung des Bimetallelements 33 vorgegeben werden, welche für eine Betätigung des Umlenkhebels 8 notwendig ist.The overcurrent tripping device 6 comprises a bimetal element 33, which is attached to the first conductor 30. In the illustrated preferred embodiment, the bimetallic element 33 is directly traversed by current, so is itself part of the current path, and is directly heated by the stream. However, it can also be provided that the bimetallic element 33 is completely or additionally heated indirectly, for example by a current-carrying conductor is arranged on the bimetallic element 33. With increasing heating of the bimetallic element 33 due to the flow of current, this is bent more and more. At a predeterminable degree of bending of the bimetallic element 33, which is proportional to a predeterminable heating of the pipe network, this moves the lever 8, which - as already stated, the further release of the separator 5, and consequently the separation of the switching contacts 4, causes. Particularly preferred is - as well as in the Fig. 2 and 5 provided that in the bimetallic 33 a Justageschraube 34 is arranged, which acts on the lever 8. By means of the adjusting screw 34, the degree of bending of the bimetallic element 33 can be specified, which is necessary for an actuation of the reversing lever 8.

Bei einem erfindungsgemäßen Schaltgerät 1 wirkt die Überstromauslösevorrichtung 6 und/oder die Kurzschlussauslösevorrichtung 7 nicht unmittelbar auf die Trennvorrichtung 5, sondern vielmehr über einen Umlenkhebel 8, wie dies etwa in Fig. 2 dargestellt ist. Fig. 2 zeigt dabei eine Anordnung aus einer Trennvorrichtung 5, einem Umlenkhebel 8, einer Überstromauslösevorrichtung 6 und einer Kurzschlussauslösevorrichtung 7. Ein derartiger Umlenkhebel 8 weist wenigstens einen ersten Hebelarm 9 und einen zweiten Hebelarm 10 auf, wobei der erste Hebelarm 9 einen Ansteuerfortsatz 11 aufweist, welcher - bei der dargestellten bevorzugten Ausführungsform - zur Ansteuerung durch das erste Ende 28 des Klappankers 26 vorgesehen ist. In einer bevorzugten Ausführung eines erfindungsgemäßen Schaltgeräts 1 wirkt das erste Ende 28 des Klappankers 26 auf den Ansteuerfortsatz 11 des Umlenkhebels 8. Je Schaltstrecke ist ein Ansteuerfortsatz 11 vorgesehen. Der zweite Hebelarm 10 umfasst einen Betätigungsfortsatz 12 zum Auslösen der Trennvorrichtung 5. Bei der dargestellten besonders bevorzugten Ausführungsform der Erfindung ist die Trennvorrichtung 5 als Schaltschloss 17 mit einer verrastbaren Klinke 18 ausgebildet. Das Schaltschloss 17 ist ein kraftspeicherndes Bindeglied zwischen einem Betätigungshebel 24 und den Schaltkontakten 4. Das Schaltschloss 17 wird in der gegenständlichen Ausbildung in einem ersten Schritt mittels Bewegung des Betätigungshebels 24 in einer ersten Richtung gespannt, wobei ein Federkraftspeicher gespannt wird, welcher bei einem Auslösen des Schaltschlosses 17 für eine schnelle und sichere Trennung der Schaltkontakte 4 sorgt. Der Spannvorgang wird durch ein Einrasten, Verrasten bzw. Verklinken der Klinke 18 an einem gehäusefesten Teil des Schaltschlosses 17 beendet. In einem zweiten Schritt werden mittels Bewegung des Betätigungshebels 24 in eine zweite Richtung, die Schaltkontakte geschlossen. Die Rastverbindung der Klinke 24 mit dem gehäusefesten Teil des Schaltschlosses 17 ist derart ausgebildet, dass eine vorgebbare Bewegung der Klinke 18 in einer vorgebbaren Richtung das Schaltschloss 17 entriegelt, wodurch der Federkraftspeicher freigegeben wird und die Schaltkontakte 17 getrennt werden. Ein derartiges bevorzugt zur Anwendung kommendes Schaltschloss 17 ist beispielsweise in der deutschen Offenlegungsschriften DE 42 27 213 A1 sowie der deutschen Patentschrift DE 44 42 417 C1 beschrieben. Wenn der Umlenkhebel 8 durch eine Bewegung der Überstromauslösevorrichtung 6 und/oder der Kurzschlussauslösevorrichtung 7, insbesondere durch eine Bewegung des Klappankers 26, bewegt wird, kommt - nach einer vorgebbaren Bewegung des Umlenkhebels 8 - der Betätigungsfortsatz 12 mit der Klinke 18 in Eingriff, und bewegt die Klinke 18 derart weit, dass die Rastverbindung mit dem gehäusefesten Teil des Schaltschlosses 17 gelöst wird, wodurch das Schaltschloss 17 entriegelt, der Federkraftspeicher freigegeben wird und die Schaltkontakte 4 getrennt werden.In a switching device 1 according to the invention, the overcurrent tripping device 6 and / or the short-circuit tripping device 7 does not act directly on the separating device 5, but rather on a reversing lever 8, as in about Fig. 2 is shown. Fig. 2 shows an arrangement of a separator 5, a reversing lever 8, an overcurrent tripping device 6 and a short-circuit tripping device 7. Such a Deflection lever 8 has at least a first lever arm 9 and a second lever arm 10, wherein the first lever arm 9 has a Ansteuerfortsatz 11, which - is provided for driving through the first end 28 of the hinged armature 26 - in the illustrated preferred embodiment. In a preferred embodiment of a switching device 1 according to the invention, the first end 28 of the hinged armature 26 acts on the control extension 11 of the reversing lever 8. A switching extension 11 is provided for each switching path. The second lever arm 10 comprises an actuating extension 12 for triggering the separating device 5. In the illustrated particularly preferred embodiment of the invention, the separating device 5 is designed as a switching mechanism 17 with a latchable pawl 18. The switching mechanism 17 is a force-storing link between an actuating lever 24 and the switching contacts 4. The switching lock 17 is stretched in the objective training in a first step by moving the operating lever 24 in a first direction, wherein a spring energy storage is tensioned, which upon release of the Switching lock 17 ensures fast and safe separation of the switching contacts 4. The clamping operation is terminated by a latching, latching or latching of the pawl 18 on a housing-fixed part of the switching mechanism 17. In a second step, the switching contacts are closed by movement of the actuating lever 24 in a second direction. The latching connection of the pawl 24 with the housing-fixed part of the switching mechanism 17 is designed such that a predetermined movement of the pawl 18 in a predetermined direction unlocks the switching mechanism 17, whereby the spring force memory is released and the switching contacts 17 are disconnected. Such preferably used for use switching mechanism 17 is for example in the German Offenlegungsschriften DE 42 27 213 A1 as well as the German patent DE 44 42 417 C1 described. If the reversing lever 8 is moved by a movement of the overcurrent tripping device 6 and / or the short-circuit tripping device 7, in particular by a movement of the hinged armature 26, comes - after a predetermined movement of the reversing lever 8 - the actuating extension 12 with the pawl 18 in engagement, and moves the pawl 18 so far that the snap-in connection with the housing-fixed part of the switching mechanism 17 is released, whereby the switching mechanism 17 unlocked, the spring force memory is released and the switching contacts 4 are disconnected.

Erfindungsgemäß ist vorgesehen, dass der Betätigungsfortsatz 12 federnd nachgiebig ausgebildet ist, wobei jede Art der federnden Nachgiebigkeit vorgesehen sein kann, etwa die Ausbildung des Betätigungsfortsatzes 12 als Feder, umfassend Metall oder Kunststoff, etwa Elastomere. Fig. 2 zeigt eine bevorzugte Ausführungsform eines Schaltschlosses 17 mit einem erfindungsgemäß ausgebildeten Umlenkhebel 8, wobei das Schaltschloss 17 in teilweise gebrochener Darstellung gezeigt ist. Die Klinke 18 ist in verrasteter Position, und der Betätigungshebel 24 ist in der Position geöffneter Schaltkontakte 4. Der Betätigungsfortsatz 12 steht nicht in Eingriff mit der Klinke 18, sodass weder die Überstromauslösevorrichtung 6 noch die Kurzschlussauslösevorrichtung 7 eine Auslösesituation detektiert haben. Zum Auslösen des Schaltschlosses 17 wird der Umlenkhebel 8 durch die Überstromauslösevorrichtung 6 bzw. die Kurzschlussauslösevorrichtung 7 entgegen dem Uhrzeigersinn bewegt bzw. gedreht, wodurch der federnd nachgiebig ausgebildete Betätigungsfortsatz 12 mit der Klinke 18 in Eingriff kommt, und diese nach einer vorgebbaren Auslenkung das Schaltschloss 17 auslöst.According to the invention it is provided that the actuating extension 12 is resilient, each type of resilient compliance can be provided, such as the formation of the actuating extension 12 as a spring, comprising metal or plastic, such as Elastomers. Fig. 2 shows a preferred embodiment of a switching mechanism 17 with an inventively designed lever 8, wherein the switching mechanism 17 is shown in a partially broken view. The pawl 18 is in the latched position, and the actuating lever 24 is in the position of open switch contacts 4. The actuating extension 12 is not in engagement with the pawl 18, so that neither the overcurrent tripping device 6 nor the short-circuit tripping device 7 have detected a tripping situation. To trigger the switching mechanism 17, the reversing lever 8 is moved or rotated counterclockwise by the overcurrent tripping device 6 or the short-circuit tripping device 7, whereby the resiliently formed actuating extension 12 comes into engagement with the pawl 18, and this, after a predefinable deflection, the switching mechanism 17 triggers.

Die Federkräfte des federnnachgiebig ausgebildeten Betätigungsfortsatzes 12 sind dabei derart bemessen, dass beim Auslösen bzw. Entrasten der Klinke 18 keine wesentlichen Verformungen an dem Betätigungsfortsatz 12 auftreten. Dies stellt kein Problem dar, da die Kräfte für ein Auslösen bzw. Entrasten der Klinke 18 sehr gering sind. Bei einer massiven Ausbildung eines Betätigungsfortsatzes, gemäß dem Stand der Technik, kann es nach dem Auslösen bzw. Entrasten der Klinke 18 aufgrund der starken Verformung des Bimetallelements 33 der Überstromauslösevorrichtung 6 zu einer weiteren Verdrehung des Umlenkhebels 8 kommen, welche zu einer Beschädigung der Klinke 18, des Umlenkhebels 8 und/oder des Bimetallelements 33 führen kann. Durch die federnde nachgiebige Ausbildung des Betätigungsfortsatzes 12 in eine Bewegungsrichtung des Umlenkhebels 8 zum Auslösen der Trennvorrichtung 5 kann erreicht werden, dass bei einer weiteren Verdrehung des Umlenkhebels 8 nach dem Auslösen bzw. Entrasten der Klinke 18, die Klinke 18 nicht weiter verdreht bzw. ausgelenkt wird und keiner übermäßigen Belastung ausgesetzt wird, wodurch die Klinke 18 bzw. das ganze Schaltschloss 17 vor Zerstörungen verschont bleiben. Durch die federnd nachgiebige Ausbildung des Betätigungsfortsatzes 12 ist eine weitere Verdrehung des Umlenkhebels 8 möglich, ohne dass eine Beschädigung des Umlenkhebels 8 zu erwarten wäre. Dadurch kann auch die Überstromauslösevorrichtung 6, die Kurzschlussauslösevorrichtung 7 und der Klappanker 26 vor Beschädigungen geschützt werden.The spring forces of the resiliently formed actuating extension 12 are dimensioned such that upon release or unlatching of the pawl 18 no significant deformations occur on the actuating extension 12. This is not a problem, since the forces for a release or unlatching of the pawl 18 are very low. In a massive design of an actuating extension, according to the prior art, it may come after triggering or unlatching of the pawl 18 due to the strong deformation of the bimetal 33 of the overcurrent tripping device 6 to a further rotation of the reversing lever 8, resulting in damage to the pawl 18th , the deflection lever 8 and / or the bimetallic element 33 can lead. Due to the resilient, resilient design of the actuating extension 12 in a movement direction of the deflection lever 8 for triggering the separation device 5 can be achieved that in a further rotation of the reversing lever 8 after the release or unlatching of the pawl 18, the pawl 18 is not further rotated or deflected is and is exposed to excessive load, whereby the pawl 18 and the entire switching mechanism 17 are spared from destruction. Due to the resilient design of the actuating extension 12, a further rotation of the reversing lever 8 is possible without damaging the reversing lever 8 would be expected. As a result, the overcurrent tripping device 6, the short-circuit tripping device 7 and the hinged armature 26 can also be protected against damage.

Bei der in den Figuren 1 bis 4 dargestellten, besonders bevorzugten Ausführungsform ist vorgesehen, dass der Umlenkhebel 8 als Auslösewelle 19 ausgebildet ist, wobei die Auslösewelle 19 einen Wellenkörper 20 aufweist, welcher in einem Gehäuse 21 des Schaltgeräts 1 drehbar gelagert ist. Im Bereich der vorgesehenen Lagerung des Wellenkörpers 20 weist dieser bevorzugt axiale Führungsstege 27 auf, um eine Verschiebung der Auslösewelle 19 in axialer Richtung zu verhindern. An der Auslösewelle 19 sind - wie in den Fig. 2 bis 4 dargestellt, Ansteuerfortsätze 11 angeordnet, sowie ein Betätigungsfortsatz 12. Bevorzugt ist vorgesehen, dass der Betätigungsfortsatz 12 als Feder 13, vorzugsweise als Metallfeder, ausgebildet ist, wobei jeder Federwerkstoff vorgesehen sein kann. Bevorzugt ist vorgesehen, dass der Betätigungsvorsatz 12 als Stahlfeder ausgebildet ist.In the in the FIGS. 1 to 4 illustrated, particularly preferred embodiment, it is provided that the deflection lever 8 is formed as a triggering shaft 19, wherein the triggering shaft 19 has a shaft body 20, which in a housing 21 of the Switching device 1 is rotatably mounted. In the area of the intended mounting of the shaft body 20, this preferably has axial guide webs 27 in order to prevent a displacement of the release shaft 19 in the axial direction. At the trip shaft 19 are - as in the Fig. 2 to 4 It is preferably provided that the actuating extension 12 is designed as a spring 13, preferably as a metal spring, wherein each spring material can be provided. It is preferably provided that the actuating attachment 12 is designed as a steel spring.

Besonders bevorzugt, und wie dargestellt, ist vorgesehen, dass die Feder 13 wenigstens bereichsweise als Drehfeder 14 ausgebildet ist, wodurch eine besonders kontrollierte federnde Wirkung in der vorgesehenen Belastungsrichtung, erreicht werden kann. Dies wird noch weiters dadurch unterstützt, dass die Drehfeder 14 wenigstens einmal vollständig um den Wellenkörper 20 der Auslösewelle 19 geschlungen ist. Dadurch kann eine hauptsächliche federnde Wirkung des Betätigungsfortsatzes 12 radial zur Drehrichtung der Auslösewelle 19 erzielt werden.Particularly preferred, and as shown, it is provided that the spring 13 is at least partially formed as a torsion spring 14, whereby a particularly controlled elastic effect in the intended loading direction, can be achieved. This is further supported by the fact that the torsion spring 14 is at least once wrapped completely around the shaft body 20 of the trip shaft 19. As a result, a main resilient action of the actuating extension 12 can be achieved radially to the direction of rotation of the trip shaft 19.

Zur sicheren und dauerhaften Anordnung der Feder 13 auf der Auslösewelle 19 ist vorgesehen, dass der Umlenkhebel 8 ein Stützlager 15 aufweist, an dem sich der, eine Drehfeder 14 umfassende, Betätigungsfortsatz 12 abstützt, und/oder dass sich die Feder 14 an einem Auflager 16 abstützt, welches am Ansteuerfortsatz 11 angeordnet ist. Das Stützlager 15 und das Auflager 16 sind in den Fig. 3 und 4 besonders gut erkennbar dargestellt. Das Stützlager 15 ist bei der dargestellten bevorzugten Ausführungsform als L-förmiger Anschlag ausgebildet, an welchen die Feder 13 festgelegt ist, und durch deren Federkraft gehalten ist. Das Auflager 16 ist als Querstrebe ausgebildet, an welche ein abgewinkeltes Ende der Feder 13 anliegt.For safe and permanent arrangement of the spring 13 on the trip shaft 19 is provided that the bell crank 8 has a support bearing 15, on which, the, a torsion spring 14 comprehensive, actuating extension 12 is supported, and / or that the spring 14 on a support 16 supported, which is arranged on the control extension 11. The support bearing 15 and the support 16 are in the 3 and 4 particularly well recognizable. The support bearing 15 is formed in the illustrated preferred embodiment as an L-shaped stop on which the spring 13 is fixed, and is held by the spring force. The support 16 is formed as a transverse strut against which an angled end of the spring 13 abuts.

Fig. 3 zeigt dabei eine Auslösewelle 19 in der Betriebsanordnung vor bzw. bei Auslösung der Klinke 18, wobei gut zu erkennen ist, dass der Betätigungsfortsatz 12 an dem Stützlager 15 anliegt. Fig. 4 zeigt hingegen dieselbe Auslösewelle wie in Fig. 3, wobei diese jedoch derart weit verdreht wurde, dass der Betätigungsfortsatz 12 weiter an der - nicht dargestellten - Klinke 18 anliegt, ohne diese jedoch weiter zu bewegen, wobei der Betätigungsfortsatz 12 von dem Stützlager 15 abgehoben ist. Fig. 3 shows a trip shaft 19 in the operating arrangement before or on release of the pawl 18, wherein it can be seen clearly that the actuating extension 12 rests against the support bearing 15. Fig. 4 shows the same triggering wave as in Fig. 3 However, this was so far twisted that the actuating extension 12 further on the - not shown - pawl 18 rests, but without moving them further, wherein the actuating extension 12 is lifted from the support bearing 15.

Claims (10)

  1. A switchgear (1), preferably a power circuit breaker, comprising at least one input terminal (2) and at least one output terminal (3) for connecting electrical conductors,
    and a first switching contact (4) and a second switching contact, said switching contacts (4) closing, in a closed position, a current path between the input terminal (2) and the output terminal (3), with a disconnection apparatus (5) being provided for disconnecting the first switching contact (4) and the second switching contact, and
    with an overcurrent release apparatus (9) and/or a short-circuit release apparatus (7) being provided which are in operative mechanical connection with the disconnection apparatus (5) by means of a deflection lever (8) in order to enable the triggering of the same, with the deflection lever (8) comprising at least one first lever arm (9) and one second lever arm (10), characterized in that the first lever arm (9) comprises a triggering projection (11) which triggers both the overcurrent release apparatus (6) as well as the short-circuit release apparatus (7), the second lever arm (10) comprises an actuating projection (12) for triggering the disconnection apparatus (5), and the actuating projection (12) is arranged in a resiliently flexible way.
  2. A switchgear (1) according to claim 1, characterized in that the actuating projection (12) is arranged to be resiliently flexible in one direction of movement of the deflection lever (8) for triggering the disconnection apparatus (5).
  3. A switchgear (1) according to claim 1 or 2, characterized in that the actuating projection (12) is arranged as a spring, preferably a metal spring.
  4. A switchgear (1) according to claim 3, characterized in that the spring (13) is arranged at least in part as a torsion spring (14).
  5. A switchgear (1) according to one of the claims 1 to 4, characterized in that the deflection lever (8) comprises a support bearing (15), on which the actuating projection (12) rests, which comprises a torsion spring (14).
  6. A switchgear (1) according to one of the claims 3 to 6, characterized in that the spring (14) rests on a support (16) which is arranged on the triggering projection (11).
  7. A switchgear (1) according to one of the claims 1 to 6, characterized in that the disconnection apparatus (5) is arranged as a breaker mechanism (17) with a latchable catch (18).
  8. A switchgear (1) according to claim 7, characterized in that the actuating projection (12) which is arranged as a spring (13) acts upon the catch (18) for triggering the same.
  9. A switchgear (1) according to one of the claims 1 to 8, characterized in that the deflection lever (8) is arranged as a triggering shaft (19), and the triggering shaft (19) comprises a shaft body (20) which is rotatably held in a housing (21) of the switchgear (1).
  10. A switchgear (1) according to claim 9, characterized in that the torsion spring (14) is wrapped at least once completely around the shaft body (20) of the triggering shaft (19).
EP09717752A 2008-03-05 2009-02-17 Switching device Active EP2263247B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09717752T PL2263247T3 (en) 2008-03-05 2009-02-17 Switching device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0035908A AT509250A1 (en) 2008-03-05 2008-03-05 SWITCHGEAR
PCT/AT2009/000056 WO2009108967A1 (en) 2008-03-05 2009-02-17 Switching device

Publications (2)

Publication Number Publication Date
EP2263247A1 EP2263247A1 (en) 2010-12-22
EP2263247B1 true EP2263247B1 (en) 2011-07-13

Family

ID=40852337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09717752A Active EP2263247B1 (en) 2008-03-05 2009-02-17 Switching device

Country Status (15)

Country Link
US (1) US8143980B2 (en)
EP (1) EP2263247B1 (en)
CN (1) CN101527233B (en)
AR (1) AR070780A1 (en)
AT (2) AT509250A1 (en)
AU (1) AU2009221605A1 (en)
BR (1) BRPI0909674A2 (en)
CA (1) CA2717317A1 (en)
ES (1) ES2372087T3 (en)
IL (1) IL207560A0 (en)
PL (1) PL2263247T3 (en)
RS (1) RS51945B (en)
RU (1) RU2498440C2 (en)
SI (1) SI2263247T1 (en)
WO (1) WO2009108967A1 (en)

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KR200491965Y1 (en) * 2016-05-04 2020-07-08 엘에스일렉트릭(주) Adjustable thermal trip mechanism for circuit breaker
FR3052909B1 (en) * 2016-06-17 2018-07-13 Hager-Electro Sas CIRCUIT BREAKER TYPE PROTECTION APPARATUS COMPRISING A CALIBRATION SPRING ADJUSTMENT ROD

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Also Published As

Publication number Publication date
EP2263247A1 (en) 2010-12-22
IL207560A0 (en) 2010-12-30
SI2263247T1 (en) 2012-03-30
AR070780A1 (en) 2010-05-05
RU2010140618A (en) 2012-04-10
RU2498440C2 (en) 2013-11-10
US20090224861A1 (en) 2009-09-10
RS51945B (en) 2012-02-29
AT509250A1 (en) 2011-07-15
ES2372087T3 (en) 2012-01-13
CA2717317A1 (en) 2009-09-11
WO2009108967A1 (en) 2009-09-11
AU2009221605A1 (en) 2009-09-11
BRPI0909674A2 (en) 2015-09-22
CN101527233A (en) 2009-09-09
US8143980B2 (en) 2012-03-27
PL2263247T3 (en) 2012-04-30
ATE516593T1 (en) 2011-07-15
CN101527233B (en) 2014-07-30

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