EP0970497B1 - Switching device - Google Patents

Switching device Download PDF

Info

Publication number
EP0970497B1
EP0970497B1 EP98916914A EP98916914A EP0970497B1 EP 0970497 B1 EP0970497 B1 EP 0970497B1 EP 98916914 A EP98916914 A EP 98916914A EP 98916914 A EP98916914 A EP 98916914A EP 0970497 B1 EP0970497 B1 EP 0970497B1
Authority
EP
European Patent Office
Prior art keywords
contact arm
switching device
contact
braking body
movable
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.)
Expired - Lifetime
Application number
EP98916914A
Other languages
German (de)
French (fr)
Other versions
EP0970497A1 (en
Inventor
Lutz Thilker
Albert Zacharias
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eaton Industries GmbH
Original Assignee
Moeller GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Moeller GmbH filed Critical Moeller GmbH
Publication of EP0970497A1 publication Critical patent/EP0970497A1/en
Application granted granted Critical
Publication of EP0970497B1 publication Critical patent/EP0970497B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00Contacts
    • H01H1/50Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00Mechanisms for operating contacts
    • H01H3/60Mechanical arrangements for preventing or damping vibration or shock

Definitions

  • the invention relates to a switching device with a contact arrangement at least one movable on a rotatable or displaceable contact arm arranged switching piece and at least one fixed Switch piece, wherein the switching device at least a first stop includes the movement of the contact arm when opening the contact assembly limited.
  • FR-A 1 048 980 is a generic switching device known with a contact arrangement, with a movable one Contact arm arranged contact piece and a fixed contact piece, wherein the switching device arranged a stop in the form of a movable Brake body includes the movement of the contact arm when Limited opening of the contact arrangement.
  • the contact arm moves after the impact together with the damping buffer belonging to the brake body, until it is braked. There is still a risk that a contact arm with high energy due to the elasticity of the hardened rubber or an equivalent material Damping buffer is thrown back.
  • the invention is therefore based on the object of a switching device Specify the type mentioned, in which the contact arm in the case high switching capacities when reaching its predetermined end position is braked without being thrown back by the stop becomes.
  • the object is achieved in that the first stop is movable as a whole and that the inertia of the Contact arm including the moving contact and the brake body are approximately the same, so that when the contact arm hits the Brake body is impacted such that the contact arm brakes and the brake body is moved.
  • the invention is essentially based on the idea of a moving brake body as a stop use the material and inertia (i.e. inertial mass or moment of inertia) is matched to the contact arm so that when the Contact arm on the brake body an impact is performed such that the Contact arm braked hard and the brake body at the appropriate speed is moved in a predetermined direction.
  • the brake body can then optionally after reaching one predetermined distance by appropriate additional means, for example a second stop or a spring.
  • additional means for example a second stop or a spring.
  • the brake body is braked by a second stop, is between the brake body and the second stop provided a damping body, which after the impact of the switching arm against the brake body, its movement brakes if the brake body in turn moves back to a starting position becomes.
  • This damping body can preferably simultaneously as Serve holding element for the brake body. So that the contact arm through the moving back brake body not pushed again and pivoted back , it has proven to be advantageous for the brake body Backstop to be provided.
  • an elastic or a plastically deformable material for example lead.
  • this can already when the contact piece strikes the brake body, a large part of the Kinetic energy of the contact arm are permanently absorbed.
  • the permanent deformation of the Brake body in a simple manner for example by using a viewing window or by using a pressure sensor etc.
  • Lifetime display of the switching device can be used.
  • the brake body is advantageously supported by a guide such that it after the impact is moved with the contact arm in the direction of impact.
  • An advantageous embodiment of the invention is that it the switching device around a pole of a circuit breaker with two fixed Contact pieces and two movable contact pieces per switch Pol acts, the movable contact pieces on the two opposite Ends of the contact arm are attached and each end of the Contact arm is assigned a brake body. Finally, it is useful if the contact arm is pivotable about a central axis or if the contact arm can be moved linearly.
  • Fig. 1 denotes a circuit breaker, which is a switching chamber housing with a housing wall 2 indicated only schematically and one in the housing arranged contact assembly 3 comprises.
  • two terminals 4, 5 are provided, which have a loop-shaped rail-shaped Heads 6, 7 are connected to two fixed pieces of scarf 8, 9.
  • the fixed contact pieces 8, 9 are rotatable by means of an axis 10 Contact arm 11 bridged.
  • the two arm halves 12, 13 press the rotatable contact arm 11 via movable contact pieces 14, 15 against the fixed contact pieces 8, 9.
  • a brake body (first stop) 16, 17 are arranged between the housing wall 2 and the two sides.
  • the brake body consist, for example, of the same material as that Contact arm (e.g. made of copper).
  • the masses of the two brake bodies 16, 17 are so on the mass of the contact arm 11 including the movable Switch pieces 14, 15 matched that with an opening movement in the direction indicated by the arrows 100 when the contact arm strikes 11 performed an elastic impact on the respective brake body 16, 17 is such that the contact arm 11 brakes strongly (ideally completely braked) and the respective brake body 16, 17 with a corresponding one Speed is shifted to the housing wall 2.
  • the housing wall 2 is in the impact area of the respective brake body 16, 17 as second stop 18, 19 designed to brake the brake body.
  • the respective brake body 16, 17 is preferably in a damping body 20 made of a resilient material (preferably Rubber) stored, which after the impact of the contact arm 11 against the Brake body 16, 17 partially slows down its movement.
  • a damping body 20 made of a resilient material (preferably Rubber) stored, which after the impact of the contact arm 11 against the Brake body 16, 17 partially slows down its movement.
  • a corresponding one Embodiment of a back stop designated 21 shows Fig. 3.
  • the backstop is one by the inner step Step recess of a corresponding support part 22 is formed.
  • the invention is of course not based on the exemplary embodiments described limited. So the braking of the contact arm by means of a movable brake body not only when using rotatable, but also when using sliding contact arms. Further can also be used as a damping body with a spring with appropriate characteristics be used.
  • the respective brake body does not have to as in the Figures shown to be arranged in the area of the contact arm ends, but can be especially with regard to the realization of a straight central Shock of the pushing and pushing body arranged in this way be that the direction of impact with the connecting line of the centers of the contact arm (or contact arm half) and brake body coincides.
  • the brake body does not necessarily have to be in the direction of the opening movement of the contact arm, but can - if this e.g. should be necessary for reasons of space - also move in another direction.
  • a corresponding exemplary embodiment is shown in FIG. 4.
  • the Brake body does not necessarily have to be the case with the material of the brake body act only elastically deformable material. Rather, the Brake body at least partially be plastically deformable. As a material for example, lead can be used in this case. This will already when the contact piece strikes the brake body, a large part the kinetic energy of the contact arm is permanently absorbed. With such a Embodiment can also the permanent deformation of the brake body in a simple way to display the service life of the switching device be used.
  • a corresponding embodiment of an arrangement with 5 shows a brake body made of plastically deformable material. The only schematically indicated contact arm with 24 and the plastic deformable brake body designated 25. On the contact arm 24 facing away from the side a deformation space 26 is provided, in which the Brake body can dodge when the contact arm hits (dashed line).

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Massaging Devices (AREA)
  • Valve Device For Special Equipments (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Push-Button Switches (AREA)
  • Eye Examination Apparatus (AREA)
  • Seal Device For Vehicle (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

A switching device has an openable contact arrangement including at least one movable contact member disposed on a movable contact arm and at least one stationary contact member. At least one movable braking body is provided for limiting the movement of the contact arm in opening the contact arrangement. The inertias of the contact arm with the movable contact member and the braking body are designed so that the contact arm is braked and the braking body is moved upon an impact of the contact arm with the braking body.

Description

Technisches GebietTechnical field

Die Erfindung betrifft eine Schaltvorrichtung mit einer Kontaktanordnung mit mindestens einem beweglichen an einem dreh- oder verschiebbaren Kontaktarm angeordneten Schaltstück und mindestens einem feststehenden Schaltstück, wobei die Schaltvorrichtung mindestens einen ersten Anschlag umfaßt, der die Bewegung des Kontaktarmes beim Öffnen der Kontaktanordnung begrenzt.The invention relates to a switching device with a contact arrangement at least one movable on a rotatable or displaceable contact arm arranged switching piece and at least one fixed Switch piece, wherein the switching device at least a first stop includes the movement of the contact arm when opening the contact assembly limited.

Stand der TechnikState of the art

Aus der Druckschrift DE 37 25 860 A1 ist ein Leistungsschalter mit einer Kontaktanordnung bekannt, die ein bewegliches an einem drehbaren Kontaktarm angeordnetes Schaltstück und ein feststehendes Schaltstück umfaßt, wobei ein Anschlag vorgesehen ist, der die Bewegung des Kontaktarmes beim Öffnen des beweglichen Schaltstückes begrenzt. Hat der Kontaktarm seine Endstellung erreicht, wird ein Zurückfallen des Armes in die Schließstellung der Kontaktanordnung durch eine entsprechende mechanische Fangvorrichtung verhindert. Nachteilig ist bei einer derartigen Schaltvorrichtung unter anderem, daß beim Öffnen der Kontaktanordnung - insbesondere bei hohen Schaltleistungen - die Gefahr besteht, daß der Kontaktarm von dem Anschlag zurückgeworfen wird, bevor die mechanische Fangvorrichtung wirkt, so daß die Kontaktanordnung unbeabsichtigt wieder geschlossen wird. Zwar sind bereits Schaltvorrichtungen bekannt, bei denen der Anschlag mit einer Dämpfungsschicht versehen ist, so daß ein Teil der Aufprallenergie absorbiert wird. Doch ist es bisher mit vertretbarem Aufwand nicht gelungen, ein Zurückprallen des Schaltstückes zu verhindern. Vielmehr wird durch die Dämpfungsschicht die Rückprallgeschwindigkeit des Kontaktarmes lediglich reduziert.From the publication DE 37 25 860 A1 is a circuit breaker with a Contact arrangement known which is a movable on a rotatable contact arm arranged contact piece and a fixed contact piece comprises, wherein a stop is provided which prevents the movement of the contact arm Limited opening of the moving contact. Does the contact arm have its When the end position is reached, the arm falls back into the closed position the contact arrangement by a corresponding mechanical safety device prevented. The disadvantage of such a switching device is other that when opening the contact arrangement - especially at high Switching capacities - there is a risk that the contact arm from the stop is thrown back before the mechanical safety device acts, so that the contact arrangement is inadvertently closed again. Although are already known switching devices in which the stop with a Damping layer is provided so that part of the impact energy is absorbed becomes. But so far it has not been possible to rebound with reasonable effort to prevent the contact piece. Rather, the damping layer the rebound speed of the contact arm only reduced.

Aus der Druckschrift FR-A 1 048 980 ist eine gattungsgemäße Schaltvorrichtung mit einer Kontaktanordnung bekannt, mit einem beweglichen an einem Kontaktarm angeordneten Schaltstück und einem feststehenden Schaltstück, wobei die Schaltvorrichtung einen Anschlag in Form eines beweglich angeordneten Bremskörpers umfaßt, der die Bewegung des Kontaktarmes beim Öffnen der Kontaktanordnung begrenzt. Der Kontaktarm bewegt sich nach dem Auftreffen gemeinsam mit zum Bremskörper gehörenden Dämpfungspuffer, bis dieser abgebremst wird. Dabei besteht weiterhin die Gefahr, daß ein mit hoher Energie auftreffender Kontaktarm infolge der Elastizität des aus gehärtetem Gummi oder einem gleichwertigem Werkstoff hergestellten Dämpfungspuffers zurückgeschleudert wird.From the document FR-A 1 048 980 is a generic switching device known with a contact arrangement, with a movable one Contact arm arranged contact piece and a fixed contact piece, wherein the switching device arranged a stop in the form of a movable Brake body includes the movement of the contact arm when Limited opening of the contact arrangement. The contact arm moves after the impact together with the damping buffer belonging to the brake body, until it is braked. There is still a risk that a contact arm with high energy due to the elasticity of the hardened rubber or an equivalent material Damping buffer is thrown back.

Darstellung der ErfindungPresentation of the invention

Der Erfindung liegt daher die Aufgabe zugrunde, eine Schaltvorrichtung der eingangs erwähnten Art anzugeben, bei welcher der Kontaktarm auch im Falle hoher Schaltleistungen beim Erreichen seiner vorgegebenen Endstellung abgebremst wird, ohne daß er anschließend von dem Anschlag zurückgeworfen wird.The invention is therefore based on the object of a switching device Specify the type mentioned, in which the contact arm in the case high switching capacities when reaching its predetermined end position is braked without being thrown back by the stop becomes.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß der erste Anschlag als ganzes beweglich ist und daß die für den Stoß relevanten Trägheiten des Kontaktarmes einschließlich des beweglichen Schaltstückes und des Bremskörpers etwa gleich sind, so daß beim Auftreffen des Kontaktarmes auf den Bremskörper ein Stoß ausgeführt wird, derart, daß der Kontaktarm abgebremst und der Bremskörper bewegt wird. Die Erfindung beruht im wesentlichen auf dem Gedanken, als Anschlag einen beweglichen Bremskörper zu verwenden, dessen Material und Trägheit (d.h. träge Masse bzw. Trägheitsmoment) derart auf den Kontaktarm abgestimmt ist, daß beim Auftreffen des Kontaktarmes auf den Bremskörper ein Stoß ausgeführt wird, derart, daß der Kontaktarm stark abgebremst und der Bremskörper mit entsprechender Geschwindigkeit in eine vorgegebene Richtung verschoben wird.The object is achieved in that the first stop is movable as a whole and that the inertia of the Contact arm including the moving contact and the brake body are approximately the same, so that when the contact arm hits the Brake body is impacted such that the contact arm brakes and the brake body is moved. The invention is essentially based on the idea of a moving brake body as a stop use the material and inertia (i.e. inertial mass or moment of inertia) is matched to the contact arm so that when the Contact arm on the brake body an impact is performed such that the Contact arm braked hard and the brake body at the appropriate speed is moved in a predetermined direction.

Der Bremskörper kann gegebenenfalls anschließend nach Erreichen einer vorgegebenen Wegstrecke durch entsprechende zusätzliche Mittel, beispielsweise einem zweiten Anschlag oder einer Feder abgebremst werden. Bei einer vorteilhaften Ausgestaltung der Erfindung, bei der der Bremskörper durch einen zweiten Anschlag abgebremst wird, ist zwischen dem Bremskörper und dem zweiten Anschlag ein Dämpfungskörper vorgesehen, der nach dem Stoß des Schaltarmes gegen den Bremskörper dessen Bewegung abbremst, sofern der Bremskörper seinerseits in eine Ausgangslage zurückbewegt wird. Dieser Dämpfungskörper kann vorzugsweise gleichzeitig als Halteelement für den Bremskörper dienen. Damit der Kontaktarm durch den sich zurückbewegenden Bremskörper nicht wieder angestoßen und zurückgeschwenkt wird, hat es sich als vorteilhaft erwiesen, für den Bremskörper einen Rückanschlag vorzusehen.The brake body can then optionally after reaching one predetermined distance by appropriate additional means, for example a second stop or a spring. at an advantageous embodiment of the invention, in which the brake body is braked by a second stop, is between the brake body and the second stop provided a damping body, which after the impact of the switching arm against the brake body, its movement brakes if the brake body in turn moves back to a starting position becomes. This damping body can preferably simultaneously as Serve holding element for the brake body. So that the contact arm through the moving back brake body not pushed again and pivoted back , it has proven to be advantageous for the brake body Backstop to be provided.

Bei weiteren vorteilhaften Ausführungsformen der Erfindung ist vorgesehen, für den Bremskörper ein elastisch oder ein plastisch verformbares Material, beispielsweise Blei, zu verwenden. Im letzteren Fall kann dadurch bereits beim Anschlagen des Schaltstückes an den Bremskörper ein großer Teil der Bewegungsenergie des Kontaktarmes bleibend absorbiert werden. Bei einer derartigen Ausführungsform kann überdies die bleibende Verformung des Bremskörpers auf einfache Weise (etwa durch Verwendung eines Sichtfensters oder durch Benutzung eines Drucksensors etc.) zur Lebensdaueranzeige der Schaltvorrichtung genutzt werden.In further advantageous embodiments of the invention, for the brake body an elastic or a plastically deformable material, for example lead. In the latter case, this can already when the contact piece strikes the brake body, a large part of the Kinetic energy of the contact arm are permanently absorbed. At a Such embodiment can also the permanent deformation of the Brake body in a simple manner (for example by using a viewing window or by using a pressure sensor etc.) for Lifetime display of the switching device can be used.

Vorteilhaft ist der Bremskörper durch eine Führung derart abgestützt, daß er nach dem Stoß mit dem Kontaktarm in Stoßrichtung bewegt wird.The brake body is advantageously supported by a guide such that it after the impact is moved with the contact arm in the direction of impact.

Eine vorteilhafte Ausgestaltung der Erfindung besteht darin, daß es sich bei der Schaltvorrichtung um einen Pol eines Leistungsschalters mit zwei feststehenden Schaltstücken und zwei beweglichen Schaltstücken pro zu schaltenden Pol handelt, wobei die beweglichen Schaltstücke an den beiden gegenüberliegenden Enden des Kontaktarmes befestigt sind und jedem Ende des Kontaktarmes ein Bremskörper zugeordnet ist. Schließlich ist es zweckmäßig, wenn der Kontaktarm um eine mittig gelegene Achse schwenkbar ist oder wenn der Kontaktarm linear bewegbar ist. An advantageous embodiment of the invention is that it the switching device around a pole of a circuit breaker with two fixed Contact pieces and two movable contact pieces per switch Pol acts, the movable contact pieces on the two opposite Ends of the contact arm are attached and each end of the Contact arm is assigned a brake body. Finally, it is useful if the contact arm is pivotable about a central axis or if the contact arm can be moved linearly.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

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

Figur 1:
die Seitenansicht der Kontaktanordnung einer erfindungsgemäßen Schaltvorrichtung mit zwei an einem Kontaktarm angeordneten drehbaren Schaltstücken und zwei den Enden des Kontaktarmes gegenüberliegenden Bremskörpem, wobei sich die Kontaktanordnung in ihrer geschlossenen Stellung befindet;
Figur 2:
den in Fig. 1 mit II bezeichneten Ausschnitt, wobei der Bremskörper in einem Dämpfungskörper gelagert ist;
Figur 3:
eine erfindungsgemäße Schaltvorrichtung mit einem Rückanschlag zur Begrenzung der Prellbewegung des Bremskörpers;
Figur 4:
die Seitenansicht eines weiteren Ausführungsbeispieles der Erfindung, bei dem der Bremskörper unter einem Winkel von etwa 45° zur Bewegung des Kontaktarmes verschiebbar angeordnet ist;
Figur 5:
den Schnitt durch ein Ausführungsbeispiel der Erfindung, bei dem der Bremskörper aus einem plastisch verformbaren Werkstoff besteht.
Further details and advantages of the invention result from the following exemplary embodiment explained with reference to figures. Show it
Figure 1:
the side view of the contact arrangement of a switching device according to the invention with two rotatable switching pieces arranged on a contact arm and two brake bodies opposite the ends of the contact arm, the contact arrangement being in its closed position;
Figure 2:
the section designated by II in FIG. 1, the brake body being mounted in a damping body;
Figure 3:
a switching device according to the invention with a backstop to limit the bouncing movement of the brake body;
Figure 4:
the side view of another embodiment of the invention, in which the brake body is slidably arranged at an angle of about 45 ° to the movement of the contact arm;
Figure 5:
the section through an embodiment of the invention, in which the brake body consists of a plastically deformable material.

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

In Fig. 1 ist mit 1 ein Leistungsschalter bezeichnet, der ein Schaltkammergehäuse mit einer nur schematisch angedeuteten Gehäusewand 2 und eine in dem Gehäuse angeordneten Kontaktanordnung 3 umfaßt. Zum Anschluß des Leistungsschalters 1 an einen entsprechenden Stromkreis sind zwei Anschlußklemmen 4, 5 vorgesehen, die über schleifenförmig ausgebildete schienenförmige Leiter 6, 7 mit zwei festen Schalistücken 8, 9 verbunden sind. Die festen Schaltstücke 8, 9 werden mittels eines um eine Achse 10 drehbaren Kontaktarmes 11 überbrückt. Dabei drücken die beiden Armhälften 12, 13 des drehbaren Kontaktarmes 11 über bewegliche Schaltstücke 14, 15 gegen die festen Schaltstücke 8, 9. Zwischen der Gehäusewand 2 und den beiden Seiten des Kontaktarmes 11, die den beweglichen Schaltstücken 14, 15 gegenüberliegen, sind jeweils ein Bremskörper (erster Anschlag) 16, 17 angeordnet. Die Bremskörper bestehen beispielsweise aus dem gleichen Material wie der Kontaktarm (z.B. aus Kupfer). Die Massen der beiden Bremskörper 16, 17 sind derart auf die Masse des Kontaktarmes 11 einschließlich der beweglichen Schaltstücke 14, 15 abgestimmt, daß bei einer Öffnungsbewegung in der durch die Pfeile 100 angedeuteten Richtung beim Auftreffen des Kontaktarmes 11 auf den jeweiligen Bremskörper 16, 17 ein elastischer Stoß ausgeführt wird, derart, daß der Kontaktarm 11 stark abgebremst (idealerweise völlig abgebremst) und der jeweilige Bremskörper 16, 17 mit einer entsprechenden Geschwindigkeit auf die Gehäusewand 2 zu verschoben wird. Die Gehäusewand 2 ist in dem Aufprallbereich des jeweiligen Bremskörpers 16, 17 als zweiter Anschlag 18, 19 zum Abbremsen des Bremskörpers ausgebildet. Wie aus Fig. 2 entnehmbar, ist der jeweilige Bremskörper 16, 17 vorzugsweise in einem Dämpfungskörper 20 aus einem nachgiebigen Werkstoff (vorzugsweise Gummi) gelagert, der nach dem Stoß des Kontaktarmes 11 gegen den Bremskörper 16,17 dessen Bewegung teilweise abbremst. Um zu vermeiden, daß der Kontaktarm 11 durch die sich zurückbewegenden Bremskörper 16, 17 wieder zurückgeschwenkt wird, hat es sich als vorteilhaft erwiesen, für den jeweiligen Bremskörper 16, 17 einen Rückanschlag vorzusehen. Ein entsprechendes Ausführungsbeispiel eines mit 21 bezeichneten Rückanschlages zeigt die Fig. 3. Dabei wird der Rückanschlag durch die innere Stufe einer Stufenausnehmung eines entsprechenden Trägerteiles 22 gebildet.In Fig. 1, 1 denotes a circuit breaker, which is a switching chamber housing with a housing wall 2 indicated only schematically and one in the housing arranged contact assembly 3 comprises. To connect the Circuit breaker 1 to a corresponding circuit are two terminals 4, 5 are provided, which have a loop-shaped rail-shaped Heads 6, 7 are connected to two fixed pieces of scarf 8, 9. The fixed contact pieces 8, 9 are rotatable by means of an axis 10 Contact arm 11 bridged. The two arm halves 12, 13 press the rotatable contact arm 11 via movable contact pieces 14, 15 against the fixed contact pieces 8, 9. Between the housing wall 2 and the two sides the contact arm 11, which are opposite the movable contact pieces 14, 15, a brake body (first stop) 16, 17 are arranged. The brake body consist, for example, of the same material as that Contact arm (e.g. made of copper). The masses of the two brake bodies 16, 17 are so on the mass of the contact arm 11 including the movable Switch pieces 14, 15 matched that with an opening movement in the direction indicated by the arrows 100 when the contact arm strikes 11 performed an elastic impact on the respective brake body 16, 17 is such that the contact arm 11 brakes strongly (ideally completely braked) and the respective brake body 16, 17 with a corresponding one Speed is shifted to the housing wall 2. The housing wall 2 is in the impact area of the respective brake body 16, 17 as second stop 18, 19 designed to brake the brake body. How 2 can be seen, the respective brake body 16, 17 is preferably in a damping body 20 made of a resilient material (preferably Rubber) stored, which after the impact of the contact arm 11 against the Brake body 16, 17 partially slows down its movement. In order to avoid, that the contact arm 11 by the retracting brake body 16, 17th is pivoted back again, it has proven to be advantageous for the to provide respective brake bodies 16, 17 with a back stop. A corresponding one Embodiment of a back stop designated 21 shows Fig. 3. The backstop is one by the inner step Step recess of a corresponding support part 22 is formed.

Die Erfindung ist selbstverständlich nicht auf die beschriebenen Ausführungsbeispiele beschränkt. So kann das Abbremsen des Kontaktarmes mittels eines beweglichen Bremskörpers nicht nur bei Verwendung von drehbaren, sondern auch bei Verwendung von verschiebbaren Kontaktarmen erfolgen. Ferner kann als Dämpfungskörper auch eine Feder mit entsprechender Charakteristik verwendet werden. Außerdem muß der jeweilige Bremskörper nicht wie in den Figuren dargestellt im Bereich der Kontaktarm-Enden angeordnet sein, sondern kann insbesondere im Hinblick auf die Realisierung eines geraden zentralen Stoßes des stoßenden und des gestoßenen Körpers derart angeordnet sein, daß die Stoßrichtung mit der Verbindungslinie der Mittelpunkte von Kontaktarm (bzw. Kontaktarm-Hälfte) und Bremskörper zusammenfällt.The invention is of course not based on the exemplary embodiments described limited. So the braking of the contact arm by means of a movable brake body not only when using rotatable, but also when using sliding contact arms. Further can also be used as a damping body with a spring with appropriate characteristics be used. In addition, the respective brake body does not have to as in the Figures shown to be arranged in the area of the contact arm ends, but can be especially with regard to the realization of a straight central Shock of the pushing and pushing body arranged in this way be that the direction of impact with the connecting line of the centers of the contact arm (or contact arm half) and brake body coincides.

Der Bremskörper muß sich auch nicht zwingend in Richtung der Öffnungsbewegung des Kontaktarmes verschieben, sondern kann sich - wenn dieses z.B. aus Platzgründen erforderlich sein sollte - auch in eine andere Richtung bewegen. Ein entsprechendes Ausführungsbeispiel ist in Fig. 4 dargestellt. Dabei ist mit 11' ein um eine Achse 10' schwenkbarer Kontaktarm bezeichnet, welcher bei seiner Öffnungsbewegung derart gegen einen durch eine Führung 23 abgestützten Bremskörper 16' schlägt, daß dieser schräg nach außen entlang der Führung 23 verschoben wird.The brake body does not necessarily have to be in the direction of the opening movement of the contact arm, but can - if this e.g. should be necessary for reasons of space - also move in another direction. A corresponding exemplary embodiment is shown in FIG. 4. there 11 'denotes a contact arm which can be pivoted about an axis 10', which during its opening movement against a guide 23 supported brake body 16 'strikes that this obliquely outwards the guide 23 is moved.

Ferner muß es sich bei dem Material des Bremskörpers auch nicht zwingend um lediglich elastisch verformbares Material handeln. Vielmehr kann der Bremskörper mindestens teilweise auch plastisch verformbar sein. Als Material kann in diesem Fall beispielsweise Blei verwendet werden. Dadurch wird bereits beim Anschlagen des Schaltstückes an den Bremskörper ein großer Teil der Bewegungsenergie des Kontaktarmes bleibend absorbiert. Bei einer derartigen Ausführungsform kann überdies die bleibende Verformung des Bremskörpers auf einfache Weise zur Lebensdaueranzeige der Schaltvorrichtung genutzt werden. Ein entsprechendes Ausführungsbeispiel einer Anordnung mit einem Bremskörper aus plastisch verformbaren Material gibt die Fig. 5 wieder. Dabei sind der nur schematisch angedeutete Kontaktarm mit 24 und der plastisch verformbare Bremskörper mit 25 bezeichnet. Auf der dem Kontaktarm 24 abgewandten Seite ist ein Verformungsraum 26 vorgesehen, in den der Bremskörper bei einem Auftreffen des Kontaktarmes ausweichen kann (gestrichelte Linie).Furthermore, it does not necessarily have to be the case with the material of the brake body act only elastically deformable material. Rather, the Brake body at least partially be plastically deformable. As a material for example, lead can be used in this case. This will already when the contact piece strikes the brake body, a large part the kinetic energy of the contact arm is permanently absorbed. With such a Embodiment can also the permanent deformation of the brake body in a simple way to display the service life of the switching device be used. A corresponding embodiment of an arrangement with 5 shows a brake body made of plastically deformable material. The only schematically indicated contact arm with 24 and the plastic deformable brake body designated 25. On the contact arm 24 facing away from the side a deformation space 26 is provided, in which the Brake body can dodge when the contact arm hits (dashed line).

Claims (10)

  1. Switching device with a contact arrangement (3), having at least one movable contact member (14, 15) arranged on a rotatable or displaceable contact arm (11; 11'; 24) and at least one stationary contact member (8, 9), with the switching device (1) including at least one first stop (16, 17; 16'; 25) in the form of a braking body arranged to be movable to limit the movement of the contact arm (11; 11'; 24) in opening the contact arrangement (3), characterized in that the first stop (16, 17; 16'; 25) is movable as a whole, and in that the inertias of the contact arm (11; 11'; 24) including the movable contact member (14, 15) and of the braking body (16, 17; 16'; 25), which are relevant to the impact are approximately equal so that an impact is executed when the contact arm (11) strikes the braking body (16, 17; 16'; 25), so that the contact arm (11; 11'; 24) is braked and the braking body (16, 17; 16'; 25) is moved.
  2. Switching device according to Claim 1, characterized in that means (18, 19; 20) are provided that brake the movement of the braking body (16, 17; 16') caused by the impact with the contact arm (11, 11') and then induce a movement of the braking body (16, 17; 16') into its starting position.
  3. Switching device according to Claim 2, characterized in that the means (18, 19; 20) for braking the moving contact arm (11; 11') include a second stop (18, 19), a spring or a stationary damping body (20).
  4. Switching device according to Claim 2 or 3, characterized in that the switching device (1) includes a return stop (21) which limits the movement of the braking body (16, 17; 16') in the direction of the contact arm (11).
  5. Switching device according to one of Claims 1 to 4, characterized in that the braking body (16, 17; 16') is made of an elastically deformable material.
  6. Switching device according to one of Claims 1 to 4, characterized in that the braking body (25) is made of a plastically deformable material which permanently absorbs a major portion of the energy of motion of the contact arm (24) in impact with the contact arm.
  7. Switching device according to one of Claims 1 to 6, characterized in that the braking body (16, 17; 16'; 25) is supported by a guide so that it moves in the direction of impact after impact with the contact arm (11; 11'; 24).
  8. Switching device according to one of Claims 1 to 7, characterized in that the switching device (1) is one pole of a circuit-breaker having two stationary contact members (8, 9) and two movable contact members (14, 15) per pole to be switched, with the movable contact members (14, 15) being attached to the two opposite ends of the contact arm (11) and one braking body (16, 17) being assigned to each end of the contact arm (11).
  9. Switching device according to one of Claims 1 to 8, characterized in that the contact arm (11) can be pivoted about a centrally positioned axis (10).
  10. Switching device according to one of Claims 1 to 9, characterized in that the contact arm is linearly movable.
EP98916914A 1997-03-27 1998-03-11 Switching device Expired - Lifetime EP0970497B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19712958A DE19712958C1 (en) 1997-03-27 1997-03-27 Switch device
DE19712958 1997-03-27
PCT/EP1998/001386 WO1998044524A1 (en) 1997-03-27 1998-03-11 Switching device

Publications (2)

Publication Number Publication Date
EP0970497A1 EP0970497A1 (en) 2000-01-12
EP0970497B1 true EP0970497B1 (en) 2002-12-18

Family

ID=7824836

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98916914A Expired - Lifetime EP0970497B1 (en) 1997-03-27 1998-03-11 Switching device

Country Status (6)

Country Link
US (1) US6246021B1 (en)
EP (1) EP0970497B1 (en)
AT (1) ATE230155T1 (en)
AU (1) AU7033498A (en)
DE (2) DE19712958C1 (en)
WO (1) WO1998044524A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6489869B2 (en) * 2000-03-08 2002-12-03 Juergen Breitlow-Hertzfeldt Electrical component and process for the manufacture thereof
EP1132935B1 (en) * 2000-03-08 2006-08-23 Tyco Electronics AMP GmbH Electrical component and process for the manufacture thereof
US6590172B1 (en) * 2002-03-29 2003-07-08 General Electric Company Circuit breaker mechanism for a rotary contact system
US7064284B1 (en) * 2005-01-13 2006-06-20 Eaton Corporation Circuit breaker with bumper
DE102005014006B4 (en) * 2005-03-26 2013-09-19 Abb Ag Electrical switching device
DE102008024387A1 (en) * 2008-05-15 2009-11-19 Siemens Aktiengesellschaft Switching device, has movable contact element contacting stationary contact element in contact position for closing electric circuit, and deceleration device reducing speed of movable contact element
DE102010017900A1 (en) * 2010-04-21 2011-10-27 Abb Ag Installation switching device with a double break
CN102856086B (en) * 2011-06-29 2015-04-29 西门子公司 Switching device
CN109411247A (en) * 2017-08-18 2019-03-01 日立电梯(中国)有限公司 A kind of switch resilience-proof device

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1048980A (en) 1950-12-08 1953-12-28 Westinghouse Electric Corp Damper for circuit breaker
DE1025041B (en) 1954-09-03 1958-02-27 Siemens Ag Electric toggle switch
US3443253A (en) * 1966-12-05 1969-05-06 Babcock Electronics Corp Armature damping structure
DE2037552A1 (en) 1970-07-29 1972-02-03 Siemens Ag Circuit breaker, especially residual current circuit breaker
US4563557A (en) * 1984-09-28 1986-01-07 Westinghouse Electric Corp. Molded case circuit breaker with a movable contact arm shock absorbing member
US4650946A (en) * 1985-11-27 1987-03-17 Westinghouse Electric Corp. Circuit breaker with stop plate for contact arm
JPH067552Y2 (en) * 1986-08-04 1994-02-23 三菱電機株式会社 Multi-pole circuit breaker
US4891617A (en) * 1988-08-01 1990-01-02 Westinghouse Electric Corp. Rubber stops in outside poles
US5023583A (en) * 1988-10-21 1991-06-11 Westinghouse Electric Corp. Circuit breaker contact operating structure
US5089795A (en) * 1990-06-29 1992-02-18 General Electric Company Compact molded case circuit breaker with movable contact arm rebound cushion
US5192841A (en) * 1991-11-06 1993-03-09 Westinghouse Electric Corp. Circuit breaker with shock absorbing mechanism
DE4201956A1 (en) 1992-01-24 1993-07-29 Siemens Ag Contact arrangement for vacuum switches with coaxial contacts - has shock absorber between current lead to movable contact and coupling stage of driver
DE29510909U1 (en) 1995-07-06 1995-09-14 Klöckner-Moeller GmbH, 53115 Bonn Current limiting contact system with delayed release of the electrodynamically actuated moving contact

Also Published As

Publication number Publication date
ATE230155T1 (en) 2003-01-15
EP0970497A1 (en) 2000-01-12
AU7033498A (en) 1998-10-22
DE19712958C1 (en) 1998-05-07
DE59806727D1 (en) 2003-01-30
WO1998044524A1 (en) 1998-10-08
US6246021B1 (en) 2001-06-12

Similar Documents

Publication Publication Date Title
EP0148111B1 (en) Contact system with an electrodynamic opening
DE3528720A1 (en) SHOCK ABSORBER FOR MOVING MACHINE PARTS
EP0970497B1 (en) Switching device
DE2626515B2 (en) HIGH VOLTAGE GENERATORS
DE102005052182A1 (en) Latching device for a spring-loaded drive
DE60029386T2 (en) Fast control device for a high voltage switching device, in particular a grounding switch
EP1895556A1 (en) Drive unit
EP0268937B1 (en) Electric contact device
DE102016208270A1 (en) Coupling member for an electrical switching device with pulse mass element
EP0466021A2 (en) Acceleration switch with snap-action spring
DE3313729C2 (en) High voltage switch
EP0468272B1 (en) Electrical switching device
DE2932355C2 (en) Storage drive
EP2992543B1 (en) Switching unit, in particular circuit breaker
DE19600690A1 (en) Collision detection device, esp. for actuation of vehicle occupant safety device,
EP4296120A1 (en) Shock absorbing vehicle headlight system
DE102004015823B4 (en) Stop module for a swivel unit for limiting a pivoting movement and swivel unit
DE2526007A1 (en) Damper for clockwork powered electrical switch drive - has roof shaped plate springs nesting in coupling wheel pockets
DE3312299C2 (en)
DE20110135U1 (en) Flywheel device for a rotating shaft
DE7001274U (en) INERTIA SWITCH
DE102005014006B4 (en) Electrical switching device
DD240281A1 (en) DRIVE FOR ELECTRICAL SWITCHES, ESPECIALLY FOR SHORT-CIRCUIT BREAKERS
EP0744760A2 (en) Switch
CH653474A5 (en) WALK CONTACT DEVICE OF AN ELECTRICAL SWITCH.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19990828

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE FR GB IT LI

RBV Designated contracting states (corrected)

Designated state(s): AT CH DE FR GB IT LI

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 20020318

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE FR GB IT LI

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20021218

REF Corresponds to:

Ref document number: 230155

Country of ref document: AT

Date of ref document: 20030115

Kind code of ref document: T

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59806727

Country of ref document: DE

Date of ref document: 20030130

Kind code of ref document: P

Ref document number: 59806727

Country of ref document: DE

Date of ref document: 20030130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030311

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030331

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030331

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20021218

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

26N No opposition filed

Effective date: 20030919

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20090324

Year of fee payment: 12

Ref country code: DE

Payment date: 20090320

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20090312

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20101130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100311