EP2381460A1 - Installation device with a double interruption - Google Patents

Installation device with a double interruption Download PDF

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Publication number
EP2381460A1
EP2381460A1 EP11002437A EP11002437A EP2381460A1 EP 2381460 A1 EP2381460 A1 EP 2381460A1 EP 11002437 A EP11002437 A EP 11002437A EP 11002437 A EP11002437 A EP 11002437A EP 2381460 A1 EP2381460 A1 EP 2381460A1
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EP
European Patent Office
Prior art keywords
pusher
contact bridge
contact
bridge
operative connection
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
EP11002437A
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German (de)
French (fr)
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EP2381460B1 (en
Inventor
Guido Dipl.-Ing. Niewöhner
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ABB AG Germany
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ABB AG Germany
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Publication date
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Publication of EP2381460A1 publication Critical patent/EP2381460A1/en
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Publication of EP2381460B1 publication Critical patent/EP2381460B1/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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2409—Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism
    • 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 an installation switching device with a double interruption according to the preamble of claim 1.
  • Generic installation switching devices such as motor protection switch, have at least one Polstrompfad, comprising two fixed contacts and two arranged on a movable contact bridge movable contact pieces through which a pole switch with two contacts and double interruption is formed.
  • the contact bridge is acted upon by a pusher in the opening direction and by a contact pressure spring in the closing direction.
  • generic installation switching devices include an electromagnetic release whose armature strikes the contact bridge in the opening direction when a short-circuit current in the Polstrompfad both via the pusher, as well as unlatching the Verklinkungsstelle a switching mechanism, so that the switching mechanism via an active lever, the contact bridge permanently against the force of the contact pressure spring acted upon opening.
  • an attenuator is arranged in the part of the path of movement of the contact bridge, which passes through this after striking, so that after striking the contact bridge this or the pusher with the attenuator in operative connection and thereby the movement of the contact bridge is slowed down after impact.
  • the contact opening system of pusher and contact bridge closes again after an opening by the pusher in the event of a short circuit, before the opening is achieved safely by eg the active lever.
  • the advantageous effect of the invention is that after opening the contact point of the relevant components, ie the pusher or the contact bridge, so much kinetic energy withdrawn by the attenuator and converted by friction into heat that the return movement is slowed down so much that the Enough lever has enough time to take his final position in which he can ensure the permanent opening of the contact point
  • the attenuator comprises a piece of material of an elastic material, for example of an elastomer.
  • the attenuator comprises a fluidic damping assembly, for example an assembly of a piston and a cylinder with a small air gap therebetween.
  • the attenuator is arranged so that it first comes into operative connection with the pusher before it can interact with the contact bridge in operative connection.
  • the attenuator is arranged so that it first comes into operative connection with the contact bridge, before it can enter into operative connection with the pusher.
  • FIG. 1 shows an inventive installation switching device 1 with a Polstrompfad 2 between an input terminal 3 and an output terminal 4. It could For example, be a Polstrompfad a three-pole motor protection switch, the other two Polstrompfade are constructed accordingly.
  • the pole current path 2 comprises two fixed contact pieces 5, 6 and two movable contact pieces 8, 9 arranged on a movable contact bridge 7, through which a contact point 10 with double interruption is formed.
  • the contact bridge 7 is acted upon by a contact pressure spring 11 in the closing direction, see directional arrow S.
  • a pusher 12 which engages the contact pressure spring 11 opposite side of the contact bridge 7, this can be applied in the opening direction, see direction arrow O.
  • the Polstrompfad 2 still includes a thermal release 113 and an electromagnetic release 13 with an armature that hits the contact bridge 7 in the opening direction in the event of a short circuit current occurring in the Polstrompfad 2 due to an electrodynamic recoil over the pusher 12, indicated by the action line 14.
  • the armature of the electromagnetic release 13 in the event of a short circuit on a switching mechanism 15 and unlatched Verklinkungsstelle, indicated by the action line 16, so that the switching mechanism 15 in the unlatched state via an active lever 17, indicated by the action line 18, the pusher 12 permanently in the opening direction the contact bridge 7 acted upon.
  • thermal release 113 which also acts in the case of an overcurrent on the switching mechanism 15, indicated by the action line 114, is known in principle and not the subject of the present invention.
  • the thermal release 113 is shown here only for the sake of completeness.
  • the mechanical system comprising the switching mechanism 15 and the active lever 17, may be, for example, a toggle lever system with a two-stage latch.
  • the active lever 17 is designed as a double arm lever whose first, acted upon by the switching mechanism 15 lever arm 171 and the second, cooperating with the pusher 12 lever arm 172 form an obtuse angle with each other and is rotatably mounted in a stationary axis of rotation 173, whereby the active lever 17 as a lever acts.
  • the mechanical system just described has a certain mechanical inertia, whereby after the unlatching a certain time, for example, 2 ms, passes before the active lever 17 meets the pusher 12, to apply this permanently in the opening direction.
  • the time to direct strike of the contact bridge 7 by the armature of the electromagnetic release 13 is much shorter, it is for example only 1 ms.
  • an attenuator 30 in the form of a cuboid piece of material made of an elastic material, such as an elastomer mounted.
  • the attenuator 30 is on the lower housing part, indicated by the wall piece with the reference numeral 32, attached. It is so dimensioned that it finds room in the interior of the contact pressure spring 11.
  • FIG. 2 shows an embodiment of the invention in which two attenuators 30 ', 30 "right and left of the contact pressure spring 11 are arranged, which are otherwise similar to the structure of the attenuator 30 in the embodiment of Fig. 1 ,
  • the attenuation members 30 ', 30 are dimensioned so that during the downward movement of the contact bridge and the pusher 12 first, the contact bridge on the attenuators 30', 30" applies.
  • the further function corresponds to the embodiment according to Fig. 1
  • the attenuators 30 'and 30 may also be a ring of elastic material which is arranged around the contact pressure spring 11, so that the blocks 30' and 30" in the Fig. 2 correspond to the cross-sectional areas of this elastic ring.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Push-Button Switches (AREA)
  • Breakers (AREA)
  • Electromagnets (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

The device (1) has a switchgear comprising an electromagnetic trigger (13) whose striker armature strikes a contact bridge (7) during occurrence of short-circuit by a pusher (12) in a direction of an opening (O) and unlatches a latch point of a switch latch (15). An absorption member (30) is arranged in a part of a pole current path (2) of the bridge, so that the bridge or the pusher is effectively connected with the absorption member after striking the bridge to slow down movement of the bridge. The absorption member comprises a piece of material made of an elastic material.

Description

Die Erfindung betrifft ein Installationsschaltgerät mit einer Doppelunterbrechung gemäß dem Oberbegriff des Anspruchs 1.The invention relates to an installation switching device with a double interruption according to the preamble of claim 1.

Gattungsgemäße Installationsschaltgeräte, beispielsweise Motorschutzschalter, weisen wenigstens einen Polstrompfad auf, umfassend zwei feststehende Kontaktstücke und zwei auf einer beweglichen Kontaktbrücke angeordnete bewegliche Kontaktstücke, durch die ein Polschalter mit zwei Kontakten und doppelter Unterbrechung gebildet ist.Generic installation switching devices, such as motor protection switch, have at least one Polstrompfad, comprising two fixed contacts and two arranged on a movable contact bridge movable contact pieces through which a pole switch with two contacts and double interruption is formed.

Die Kontaktbrücke wird dabei durch einen Drücker in Öffnungsrichtung und durch eine Kontaktdruckfeder in Schließrichtung beaufschlagt.The contact bridge is acted upon by a pusher in the opening direction and by a contact pressure spring in the closing direction.

Weiter umfassen gattungsgemäße Installationsschaltgeräte einen elektromagnetischen Auslöser, dessen Anker bei Auftreten eines Kurzschlussstromes in dem Polstrompfad sowohl über den Drücker die Kontaktbrücke in Öffnungsrichtung aufschlägt, als auch die Verklinkungsstelle eines Schaltschlosses entklinkt, so dass das Schaltschloss über einen Wirkhebel die Kontaktbrücke dauerhaft entgegen der Kraft der Kontaktdruckfeder öffnend beaufschlagt.Furthermore, generic installation switching devices include an electromagnetic release whose armature strikes the contact bridge in the opening direction when a short-circuit current in the Polstrompfad both via the pusher, as well as unlatching the Verklinkungsstelle a switching mechanism, so that the switching mechanism via an active lever, the contact bridge permanently against the force of the contact pressure spring acted upon opening.

Unmittelbar nach dem Aufschlagen der Kontaktbrücke und damit dem Unterbrechen des Kurzschlussstromes in dem Polstrompfad bricht der elektrodynamische Rückstoß des elektromagnetischen Auslösers zusammen und die Kontaktbrücke wird durch die Kraft der Kontaktdruckfeder wieder in Richtung auf ihre Schließstellung hin beaufschlagt.Immediately after the strike of the contact bridge and thus the interruption of the short-circuit current in the Polstrompfad the electrodynamic recoil of the electromagnetic release collapses and the contact bridge is acted upon by the force of the contact pressure spring toward its closed position.

Aufgrund der größeren mechanischen Trägheit des Schaltschlosses, verglichen mit derjenigen des den Anker und den Drücker umfassenden Systems, eilt der Wirkhebel zur dauerhaften Offenhaltung der Kontakte durch das Schaltschloss der Drückerbewegung nach.Due to the greater mechanical inertia of the switching mechanism, compared with that of the system comprising the armature and the pusher, the active lever for the permanent keeping open of the contacts by the switching mechanism of the pusher movement hurries after.

Unter ungünstigen Bedingungen kann es vorkommen, dass die Kontakte durch die Kontaktdruckfeder bereits wieder geschlossen wurden, bevor das Schaltschloss über den Wirkhebel und den Drücker eine dauerhafte Öffnung bewirken kann. Man spricht dann vom Auftreten eines Kontaktprellens, welches unerwünscht ist.Under unfavorable conditions, it may happen that the contacts have already been closed again by the contact pressure spring before the switch lock can cause a permanent opening via the active lever and the pusher. One then speaks of the occurrence of a contact bounce, which is undesirable.

In der DE 10 2006 055 007 A1 ist ein Installationsschaltgerät mit einer Doppelunterbrechung beschrieben, bei dem ein Kontaktprellen dadurch verhindert wird, dass ein zweigeteilter Drücker verwendet wird, mit einem Stößel, der in einem Schieber läuft und der Bewegung des Schiebers vorauseilt. Diese Lösung ist mechanisch kompliziert und nicht einfach zu montieren.In the DE 10 2006 055 007 A1 there is described a service switching device with a double break, in which a contact bounce is prevented by using a two-part pusher, with a ram that runs in a slider and the movement of the slider leads. This solution is mechanically complicated and not easy to assemble.

Es ist daher die Aufgabe der vorliegenden Erfindung, ein gattungsgemäßes Installationsschaltgerät mit verbessertem dynamischen Verhalten bei der Kurzschlussstromunterbrechung unter Vermeidung von Kontaktprellen zu schaffen, wobei der mechanische Aufbau einfach sein soll..It is therefore an object of the present invention to provide a generic service switching device with improved dynamic behavior in the short-circuit current interruption while avoiding contact bounce, the mechanical structure should be simple ..

Die Aufgabe wird erfindungsgemäß gelöst durch ein gattungsgemäßes Installationsschaltgerät mit den kennzeichnenden Merkmalen des Anspruchs 1.The object is achieved by a generic service switching device with the characterizing features of claim 1.

Erfindungsgemäß ist in dem Teil der Bewegungsbahn der Kontaktbrücke, den diese nach dem Aufschlagen durchläuft, ein Dämpfungsglied angeordnet, so dass nach dem Aufschlagen der Kontaktbrücke diese oder der Drücker mit dem Dämpfungsglied in Wirkverbindung tritt und dadurch die Bewegung der Kontaktbrücke nach dem Aufschlagen verlangsamt ist.According to the invention, an attenuator is arranged in the part of the path of movement of the contact bridge, which passes through this after striking, so that after striking the contact bridge this or the pusher with the attenuator in operative connection and thereby the movement of the contact bridge is slowed down after impact.

Durch die erfindungsgemäße Anordnung kann verhindert werden, dass das Kontaktöffnungssystem aus Drücker und Kontaktbrücke sich nach einer Öffnung durch den Drücker im Falle eines Kurzschlusses wieder schließt, bevor die Öffnung sicher durch z.B. den Wirkhebel erreicht wird. Die erfindungsgemäß vorteilhafte Wirkung besteht darin, dass nach dem Öffnen der Kontaktstelle den betreffenden Bauteilen, also dem Drücker oder der Kontaktbrücke, durch das Dämpfungsglied so viel kinetische Energie entzogen und durch Reibung in Wärme umgewandelt werden, dass die Rückbewegung so weit verlangsamt wird, dass der Wirkhebel ausreichend Zeit hat, seine Endstellung einzunehmen, in der er die dauerhafte Öffnung der Kontaktstelle sicherstellen kannBy the arrangement according to the invention can be prevented that the contact opening system of pusher and contact bridge closes again after an opening by the pusher in the event of a short circuit, before the opening is achieved safely by eg the active lever. The advantageous effect of the invention is that after opening the contact point of the relevant components, ie the pusher or the contact bridge, so much kinetic energy withdrawn by the attenuator and converted by friction into heat that the return movement is slowed down so much that the Enough lever has enough time to take his final position in which he can ensure the permanent opening of the contact point

Gemäß einer weiteren vorteilhaften Ausführungsform der Erfindung umfasst das Dämpfungsglied ein Materialstück aus einem elastischen Material, beispielsweise aus einem Elastomer.According to a further advantageous embodiment of the invention, the attenuator comprises a piece of material of an elastic material, for example of an elastomer.

Gemäß einer vorteilhaften Ausführungsform der Erfindung umfasst das Dämpfungsglied eine fluidische Dämpfungsbaugruppe, beispielsweise eine Anordnung aus einem Kolben und einem Zylinder mit einem kleinen Luftspalt dazwischen.According to an advantageous embodiment of the invention, the attenuator comprises a fluidic damping assembly, for example an assembly of a piston and a cylinder with a small air gap therebetween.

Gemäß einer weiteren vorteilhaften Ausführungsform der Erfindung ist das Dämpfungsglied so angeordnet, dass es zuerst mit dem Drücker in Wirkverbindung tritt, bevor es mit der Kontaktbrücke in Wirkverbindung treten kann.According to a further advantageous embodiment of the invention, the attenuator is arranged so that it first comes into operative connection with the pusher before it can interact with the contact bridge in operative connection.

Gemäß einer weiteren vorteilhaften Ausführungsform der Erfindung ist das Dämpfungsglied so angeordnet ist, dass es zuerst mit der Kontaktbrücke in Wirkverbindung tritt, bevor es mit dem Drücker in Wirkverbindung treten kann.According to a further advantageous embodiment of the invention, the attenuator is arranged so that it first comes into operative connection with the contact bridge, before it can enter into operative connection with the pusher.

Anhand der Zeichnungen, in denen zwei Ausführungsbeispiele der Erfindung dargestellt sind, sollen die Erfindung sowie weitere vorteilhafte Ausgestaltungen und Verbesserungen der Erfindung näher erläutert und beschrieben werden.Reference to the drawings, in which two embodiments of the invention are shown, the invention and further advantageous embodiments and improvements of the invention will be explained and described in detail.

Es zeigen:

Figur 1:
ein Funktionsschema eines erfindungsgemäßen Installationsschaltgerätes mit einem erfindungsgemäßen Dämpfungsglied, welches so angeordnet ist, dass es zuerst mit dem Drücker in Wirkverbindung tritt, bevor es mit der Kontaktbrücke in Wirkverbindung treten kann, sowie
Figur 2:
ein Funktionsschema eines erfindungsgemäßen Installationsschaltgerätes mit einem erfindungsgemäßen Dämpfungsglied, welches so angeordnet ist, dass es zuerst mit der Kontaktbrücke in Wirkverbindung tritt, bevor es mit dem Drücker in Wirkverbindung treten kann.
Show it:
FIG. 1:
a functional diagram of a service switching device according to the invention with an attenuator according to the invention, which is arranged so that it first comes into operative connection with the pusher before it can enter into operative connection with the contact bridge, as well as
FIG. 2:
a functional diagram of a service switching device according to the invention with an attenuator according to the invention, which is arranged so that it first comes into operative connection with the contact bridge before it can enter into operative connection with the pusher.

In den Figuren sind jeweils gleiche oder gleichwirkende Elemente oder Baugruppen jeweils mit den gleichen Bezugsziffern bezeichnet.In the figures, the same or equivalent elements or assemblies are each denoted by the same reference numerals.

Die Figur 1 zeigt ein erfindungsgemäßes Installationsschaltgerät 1 mit einem Polstrompfad 2 zwischen einer Eingangsklemme 3 und einer Ausgangsklemme 4. Es könnte sich beispielsweise um einen Polstrompfad eines dreipoligen Motorschutzschalters handeln, dessen andere beiden Polstrompfade entsprechend aufgebaut sind.The FIG. 1 shows an inventive installation switching device 1 with a Polstrompfad 2 between an input terminal 3 and an output terminal 4. It could For example, be a Polstrompfad a three-pole motor protection switch, the other two Polstrompfade are constructed accordingly.

Der Polstrompfad 2 umfasst zwei feststehende Kontaktstücke 5,6 und zwei auf einer beweglichen Kontaktbrücke 7 angeordnete bewegliche Kontaktstücke 8,9, durch die eine Kontaktstelle 10 mit Doppelunterbrechung gebildet ist. Die Kontaktbrücke 7 wird durch eine Kontaktdruckfeder 11 in Schließrichtung, siehe Richtungspfeil S, beaufschlagt. Durch einen Drücker 12, der an der der Kontaktdruckfeder 11 gegenüberliegenden Seite der Kontaktbrücke 7 angreift, kann diese in Öffnungsrichtung, siehe Richtungspfeil O, beaufschlagt werden.The pole current path 2 comprises two fixed contact pieces 5, 6 and two movable contact pieces 8, 9 arranged on a movable contact bridge 7, through which a contact point 10 with double interruption is formed. The contact bridge 7 is acted upon by a contact pressure spring 11 in the closing direction, see directional arrow S. By a pusher 12 which engages the contact pressure spring 11 opposite side of the contact bridge 7, this can be applied in the opening direction, see direction arrow O.

Der Polstrompfad 2 umfasst noch einen thermischen Auslöser 113 und einen elektromagnetischen Auslöser 13 mit einem Anker, der im Falle eines in dem Polstrompfad 2 auftretenden Kurzschlussstromes aufgrund eines elektrodynamischen Rückstoßes über den Drücker 12 die Kontaktbrücke 7 in Öffnungsrichtung aufschlägt, angedeutet durch die Wirklinie 14. Gleichzeitig wirkt der Anker des elektromagnetischen Auslösers 13 im Kurzschlussfall auch auf ein Schaltschloss 15 und entklinkt dessen Verklinkungsstelle, angedeutet durch die Wirklinie 16, so dass das Schaltschloss 15 im entklinkten Zustand über einen Wirkhebel 17, angedeutet durch die Wirklinie 18, den Drücker 12 dauerhaft in Öffnungsrichtung der Kontaktbrücke 7 beaufschlagt.The Polstrompfad 2 still includes a thermal release 113 and an electromagnetic release 13 with an armature that hits the contact bridge 7 in the opening direction in the event of a short circuit current occurring in the Polstrompfad 2 due to an electrodynamic recoil over the pusher 12, indicated by the action line 14. At the same time acts the armature of the electromagnetic release 13 in the event of a short circuit on a switching mechanism 15 and unlatched Verklinkungsstelle, indicated by the action line 16, so that the switching mechanism 15 in the unlatched state via an active lever 17, indicated by the action line 18, the pusher 12 permanently in the opening direction the contact bridge 7 acted upon.

Die Funktion des thermischen Auslösers 113, der im Falle eines Überstromes ebenfalls auf das Schaltschloss 15 wirkt, angedeutet durch die Wirklinie 114, ist im Prinzip bekannt und nicht Gegenstand der vorliegenden Erfindung. Der thermischer Auslöser 113 ist hier nur der Vollständigkeit halber mit dargestellt.The function of the thermal release 113, which also acts in the case of an overcurrent on the switching mechanism 15, indicated by the action line 114, is known in principle and not the subject of the present invention. The thermal release 113 is shown here only for the sake of completeness.

Bei dem mechanischen System, umfassend das Schaltschloss 15 und den Wirkhebel 17, kann es sich beispielsweise um ein Kniehebelsystem mit einer zweistufigen Verklinkung handeln. Der Wirkhebel 17 ist als Doppelarmhebel ausgebildet, dessen erster, von dem Schaltschloss 15 beaufschlagter Hebelarm 171 und dessen zweiter, mit dem Drücker 12 zusammenwirkender Hebelarm 172 einen stumpfen Winkel miteinander bilden und in einer ortsfesten Drehachse 173 drehbar gelagert ist, wodurch der Wirkhebel 17 als Umlenkhebel wirkt.The mechanical system, comprising the switching mechanism 15 and the active lever 17, may be, for example, a toggle lever system with a two-stage latch. The active lever 17 is designed as a double arm lever whose first, acted upon by the switching mechanism 15 lever arm 171 and the second, cooperating with the pusher 12 lever arm 172 form an obtuse angle with each other and is rotatably mounted in a stationary axis of rotation 173, whereby the active lever 17 as a lever acts.

Das gerade beschriebenen mechanische System hat eine gewisse mechanische Trägheit, wodurch nach dem Entklinken eine gewisse Zeit, beispielsweise 2 ms, vergeht, bevor der Wirkhebel 17 auf den Drücker 12 trifft, um diesen dauerhaft in Öffnungsrichtung zu beaufschlagen.The mechanical system just described has a certain mechanical inertia, whereby after the unlatching a certain time, for example, 2 ms, passes before the active lever 17 meets the pusher 12, to apply this permanently in the opening direction.

Demgegenüber ist die Zeit bis zum direkten Aufschlagen der Kontaktbrücke 7 durch den Anker des elektromagnetischen Auslösers 13 viel kürzer, sie beträgt beispielsweise nur 1 ms.In contrast, the time to direct strike of the contact bridge 7 by the armature of the electromagnetic release 13 is much shorter, it is for example only 1 ms.

Dadurch könnte es, wenn keine weiteren Maßnahmen ergriffen werden, passieren, dass die Kontaktbrücke 7 durch die Rückstellkraft der Kontaktdruckfeder 11 bereits wieder in ihre Ausgangsstellung in der Schließposition zurück gedrückt und die Kontaktstelle 10 dadurch wieder geschlossen wird, bevor noch der Wirkhebel 17 mit dem freien Ende seines zweiten Armes 171 den Drücker und damit die Kontaktbrücke 7 dauerhaft in Öffnungsstellung beaufschlagen können.This could, if no further measures are taken, happen that the contact bridge 7 already pressed back by the restoring force of the contact pressure spring 11 back to its original position in the closed position and the contact point 10 is closed again before the effective lever 17 with the free End of his second arm 171, the pusher and thus the contact bridge 7 can act permanently in the open position.

Die erfindungsgemäßen Maßnahmen, die ergriffen werden, um das zu verhindern werden im Folgenden beschrieben.The measures according to the invention which are taken to prevent this are described below.

Zunächst sei die Figur 1 betrachtet. In der Bewegungsbahn des Drückers 12, die dieser nach dem Öffnen der Kontaktstelle in Pfeilrichtung O durchläuft, ist ein Dämpfungsglied 30 in Form eines quaderförmigen Materialstücks aus einem elastischen Material, beispielsweise eines Elastomers, angebracht. Das Dämpfungsglied 30 ist dabei auf dem Gehäuseunterteil, angedeutet durch das Wandstück mit der Bezugsziffer 32, angebracht. Es ist so bemessen, dass es im Innenraum der Kontaktdruckfeder 11 Platz findet. Wenn die Kontaktbrücke aufgeschlagen wird, dann wird der Drücker 12 nach unten in Pfeilrichtung O geschlagen. Er prallt dann auf das Dämpfungsglied 30, wo ihm so viel kinetische Energie entzogen und durch innere Reibung in dem Dämpfungsglied 30 in Wärme umgewandelt wird, dass sein Zurückprallen, die Bewegung wieder aufwärts in Pfeilrichtung S, verlangsamt wird. Dadurch entsteht genug Zeit für das Schaltwerk, zu entklinken und für den Wirkhebel, den Drücker 12 dauerhaft niederzuhalten, bevor die beweglichen Kontaktstücke auf der Kontaktbrücke wieder in Berührung mit den festen Kontaktstücken kommen können. Ein Kontaktprellen ist damit bei einfachem mechanischem Aufbau vermieden.First, be the FIG. 1 considered. In the movement path of the pusher 12, which passes through this after opening the contact point in the direction of arrow O, an attenuator 30 in the form of a cuboid piece of material made of an elastic material, such as an elastomer mounted. The attenuator 30 is on the lower housing part, indicated by the wall piece with the reference numeral 32, attached. It is so dimensioned that it finds room in the interior of the contact pressure spring 11. When the contact bridge is opened, then the pusher 12 is beaten down in the direction of arrow O. It then bounces on the attenuator 30 where it is deprived of so much kinetic energy and converted into heat by internal friction in the attenuator 30 that its rebound, the movement back up in the direction of arrow S, is slowed down. This creates enough time for the rear derailleur to unlatch and for the active lever, the pusher 12 permanently hold down before the movable contacts on the contact bridge can come back into contact with the fixed contact pieces. A contact bounce is thus avoided with a simple mechanical structure.

Die Beschreibung des Ausführungsbeispiels erfolgt anhand eines Materialstücks aus einem elastischen Material. Allerdings soll die Erfindung nicht auf solche Ausführungen beschränkt sein, vielmehr sollen alle denkbaren Ausführungen von Dämpfungsgliedern in die Erfindung eingeschlossen sein.The description of the embodiment is made on the basis of a piece of material made of an elastic material. However, the invention should not be limited to such embodiments, but all conceivable embodiments of attenuators should be included in the invention.

Die Figur 2 zeigt eine Ausführungsform der Erfindung, bei der zwei Dämpfungsglieder 30', 30" rechts und links der Kontaktdruckfeder 11 angeordnet sind, die im Übrigen ähnlich aufgebaut sind wie das Dämpfungsglied 30 im Ausführungsbeispiel der Fig. 1. Die Dämpfungsglieder 30', 30" sind so dimensioniert, dass bei der Abwärtsbewegung der Kontaktbrücke und des Drückers 12 zunächst die Kontaktbrücke auf die Dämpfungsglieder 30', 30" trifft. Die weitere Funktion entspricht der Ausführungsform nach Fig. 1. In dem Fall, dass die Dämpfungsglieder 30' und 30" elastische Materialstücke sind, kann es sich in einem weiteren Ausführungsbeispiel auch um einen Ring aus elastischem Material handeln, der um die Kontaktdruckfeder 11 herum angeordnet ist, so dass die Blöcke 30' und 30" in der Fig. 2 den Querschnittsflächen dieses elastischen Rings entsprechen.The FIG. 2 shows an embodiment of the invention in which two attenuators 30 ', 30 "right and left of the contact pressure spring 11 are arranged, which are otherwise similar to the structure of the attenuator 30 in the embodiment of Fig. 1 , The attenuation members 30 ', 30 "are dimensioned so that during the downward movement of the contact bridge and the pusher 12 first, the contact bridge on the attenuators 30', 30" applies. The further function corresponds to the embodiment according to Fig. 1 , In the case that the attenuators 30 'and 30 "are elastic pieces of material, in another embodiment, it may also be a ring of elastic material which is arranged around the contact pressure spring 11, so that the blocks 30' and 30" in the Fig. 2 correspond to the cross-sectional areas of this elastic ring.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
InstallationsschaltgerätService switching device
22
Polstrompfadpole current path
33
Eingangsklemmeinput terminal
44
Ausgangsklemmeoutput terminal
5, 65, 6
Feststehende KontaktstückeFixed contact pieces
77
Bewegliche KontaktbrückeMobile contact bridge
8, 98, 9
Bewegliche KontaktstückeMovable contact pieces
1010
Kontaktstellecontact point
1111
KontaktdruckfederContact pressure spring
1212
Drückerhandle
1313
Elektromagnetischer AuslöserElectromagnetic release
1414
Wirklinieline of action
1515
Schaltschlossswitch lock
1616
Wirklinieline of action
1717
Wirkhebelactive lever
1818
Wirklinieline of action
3030
Dämpfungsgliedattenuator
30'30 '
Dämpfungsgliedattenuator
30"30 "
Dämpfungsgliedattenuator
3232
Wandstückwall piece
113113
Thermischer AuslöserThermal release
114114
Wirklinieline of action
171171
Erster HebelarmFirst lever arm
172172
Zweiter HebelarmSecond lever arm
173173
Drehachseaxis of rotation

Claims (5)

Installationsschaltgerät (1) mit wenigstens einem Polstrompfad (2), umfassend zwei feststehende Kontaktstücke (5,6) und zwei auf einer beweglichen Kontaktbrücke (7) angeordnete bewegliche Kontaktstücke (8,9), durch die ein Polschalter mit zwei Kontakten und doppelter Unterbrechung gebildet wird, wobei die Kontaktbrücke (7) durch einen Drücker (12) in Öffnungsrichtung (O) und durch eine Kontaktdruckfeder (11) in Schließrichtung (S) beaufschlagt wird, mit einem elektromagnetischen Auslöser (13), dessen Schlaganker im Kurzschlussfall sowohl über den Drücker (12) die Kontaktbrücke (7) in Öffnungsrichtung (O) aufschlägt, als auch die Verklinkungsstelle eines Schaltschlosses (15) entklinkt, so dass das Schaltschloss (15) über einen den Drücker(12) beaufschlagenden Wirkhebel (17) die Kontaktbrücke (7) dauerhaft entgegen der Kraft der Kontaktdruckfeder (11) öffnend beaufschlagt, dadurch gekennzeichnet, dass in dem Teil der Bewegungsbahn der Kontaktbrücke (7), den diese nach dem Aufschlagen durchläuft, ein Dämpfungsglied (30, 30', 30") angeordnet ist, so dass nach dem Aufschlagen der Kontaktbrücke (7) diese oder der Drücker (12) mit dem Dämpfungsglied (30, 30', 30") in Wirkverbindung tritt und dadurch die Bewegung der Kontaktbrücke nach dem Aufschlagen verlangsamt ist.Service switching device (1) having at least one Polstrompfad (2) comprising two fixed contact pieces (5,6) and two on a movable contact bridge (7) arranged movable contact pieces (8,9), formed by a pole switch with two contacts and double interruption is, wherein the contact bridge (7) by a pusher (12) in the opening direction (O) and by a contact pressure spring (11) in the closing direction (S) is acted upon, with an electromagnetic release (13), the impact armature in the case of short circuit both via the pusher (12) the contact bridge (7) in the opening direction (O) strikes, as well as the Verklinkungsstelle a switching lock (15) unlatched, so that the switching mechanism (15) via a the pusher (12) acting on the active lever (17) the contact bridge (7) durably against the force of the contact pressure spring (11) acted upon opening, characterized in that in the part of the path of movement of the contact bridge (7), this after passes through the impact, an attenuator (30, 30 ', 30 ") is arranged, so that after striking the contact bridge (7) this or the pusher (12) with the attenuator (30, 30', 30") enters into operative connection and thereby the movement of the contact bridge is slowed down after impact. Installationsschaltgerät (1) nach Anspruch 1, dadurch gekennzeichnet, dass das Dämpfungsglied (30, 30', 30") ein Materialstück aus einem elastischen Material umfasst.Installation switching device (1) according to claim 1, characterized in that the damping member (30, 30 ', 30 ") comprises a piece of material made of an elastic material. Installationsschaltgerät (1) nach Anspruch 1, dadurch gekennzeichnet, dass das Dämpfungsglied (30, 30', 30") eine fluidische Dämpfungsbaugruppe umfasst.Installation switching device (1) according to claim 1, characterized in that the damping member (30, 30 ', 30 ") comprises a fluidic damping assembly. Installationsschaltgerät (1) nach Anspruch 1, dadurch gekennzeichnet, dass das Dämpfungsglied (30, 30', 30") so angeordnet ist, dass es zuerst mit dem Drücker (12) in Wirkverbindung tritt, bevor es mit der Kontaktbrücke (7) in Wirkverbindung treten kann.Installation switching device (1) according to claim 1, characterized in that the attenuator (30, 30 ', 30 ") is arranged so that it first with the pusher (12) comes into operative connection before it with the contact bridge (7) in operative connection can occur. Installationsschaltgerät (1) nach Anspruch 1, dadurch gekennzeichnet, dass das Dämpfungsglied (30, 30', 30") so angeordnet ist, dass es zuerst mit der Kontaktbrücke (7) in Wirkverbindung tritt, bevor es mit dem Drücker (12) in Wirkverbindung treten kann.Installation switching device (1) according to claim 1, characterized in that the damping member (30, 30 ', 30 ") is arranged so that it first with the contact bridge (7) is in operative connection before it with the pusher (12) in operative connection can occur.
EP11002437.9A 2010-04-21 2011-03-24 Installation device with a double interruption Active EP2381460B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010017900A DE102010017900A1 (en) 2010-04-21 2010-04-21 Installation switching device with a double break

Publications (2)

Publication Number Publication Date
EP2381460A1 true EP2381460A1 (en) 2011-10-26
EP2381460B1 EP2381460B1 (en) 2015-10-14

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CN (1) CN102237227B (en)
DE (1) DE102010017900A1 (en)

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WO2015036011A1 (en) * 2013-09-10 2015-03-19 Siemens Aktiengesellschaft Switching device comprising a damping element for contact arrangement
GB2607079A (en) * 2021-05-27 2022-11-30 Eaton Intelligent Power Ltd Switching device and method for operating a switching device

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015036011A1 (en) * 2013-09-10 2015-03-19 Siemens Aktiengesellschaft Switching device comprising a damping element for contact arrangement
GB2607079A (en) * 2021-05-27 2022-11-30 Eaton Intelligent Power Ltd Switching device and method for operating a switching device
WO2022248081A1 (en) * 2021-05-27 2022-12-01 Eaton Intelligent Power Limited Switching device and method for operating a switching device
GB2607079B (en) * 2021-05-27 2023-05-17 Eaton Intelligent Power Ltd Switching device and method for operating a switching device

Also Published As

Publication number Publication date
EP2381460B1 (en) 2015-10-14
DE102010017900A1 (en) 2011-10-27
CN102237227B (en) 2016-02-17
CN102237227A (en) 2011-11-09

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