EP0146528B1 - Switching mechanism for a protective power circuit breaker - Google Patents

Switching mechanism for a protective power circuit breaker Download PDF

Info

Publication number
EP0146528B1
EP0146528B1 EP19840890226 EP84890226A EP0146528B1 EP 0146528 B1 EP0146528 B1 EP 0146528B1 EP 19840890226 EP19840890226 EP 19840890226 EP 84890226 A EP84890226 A EP 84890226A EP 0146528 B1 EP0146528 B1 EP 0146528B1
Authority
EP
European Patent Office
Prior art keywords
projection
guide rod
armature plate
movable contact
slide
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
Application number
EP19840890226
Other languages
German (de)
French (fr)
Other versions
EP0146528A2 (en
EP0146528A3 (en
Inventor
Gerhard Amon
Karl Kager
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.)
Felten & Guilleaume Fabrik Elektrischer Apparate AG Schrems-Eugenia Niederosterreich
Original Assignee
Felten & Guilleaume Fabrik Elektrischer Apparate AG Schrems-Eugenia Niederosterreich
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 Felten & Guilleaume Fabrik Elektrischer Apparate AG Schrems-Eugenia Niederosterreich filed Critical Felten & Guilleaume Fabrik Elektrischer Apparate AG Schrems-Eugenia Niederosterreich
Publication of EP0146528A2 publication Critical patent/EP0146528A2/en
Publication of EP0146528A3 publication Critical patent/EP0146528A3/en
Application granted granted Critical
Publication of EP0146528B1 publication Critical patent/EP0146528B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • 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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/046—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H using snap closing mechanisms
    • H01H2300/048—Snap closing by latched movable contact, wherein the movable contact is held in a minimal distance from the fixed contact during first phase of closing sequence in which a closing spring is charged

Definitions

  • the invention relates to a switching mechanism for circuit breakers, in which the contract bridge, which is pivotably mounted in the housing via a bearing having play, on the one hand, preferably via a bridge bracket, with a handlebar, which in turn is coupled with an actuation button, and on the other hand with the armature of the Magnetic trigger is articulated via an anchor bracket, the paths of movement of the anchor bracket and handlebar intersect.
  • circuit breakers equipped with such a switching mechanism known from AT-B-237 724 are to be closed again via their actuation button, for example after a trip, then it is essential, especially at higher current strengths, that the movable contact does not move hesitantly in contact with the fixed contact becomes.
  • the speed of the movement of the movable contact depends solely on how quickly the actuating button is pivoted. This can result in an arc forming when the circuit breaker is closed and the contact apparatus is damaged or destroyed or the two contacts are welded together.
  • the invention has for its object to develop a switching mechanism of the type mentioned in such a way that, without having to change the basic construction of circuit breakers, the closing of the contact apparatus takes place quickly, regardless of the speed of the movement of the actuating button.
  • At least one projection is provided on the armature tab of the magnetic release, that the projection bears during the movement of the handlebar into its position corresponding to the closed position of the movable contact on the surface of the handlebar facing the magnetic release, the contact of the Contact bridge is held at a distance from the fixed contact, and that the projection engages in a recess in the handlebar in the position of the handlebar corresponding to the closed position of the movable contact bridge.
  • the contact-carrying end of the movable contact bridge which is coupled to the armature of the magnetic release, is kept at a distance from the fixed contact, regardless of the movement of the handlebar, since the projection of the armature tab of the magnetic release on the handlebar, namely on the side facing the magnetic release.
  • the contact spring is already pretensioned, which is possible because the movable contact bridge is pivotably mounted in the housing via a bearing having a play (long slot aligned transversely to the longitudinal extension of the contact bridge, into which a bearing journal engages).
  • the recess is provided in a slide which is displaceably guided in or on the handlebar and which is loaded by a spring, in particular a tension spring in the sense of a movement into a position in which the projection on the anchor bracket in the The closed position of the movable contact bridge engages in the recess.
  • the opening of the circuit breaker via the actuating button of the switching mechanism is not impeded in a particularly simple manner, since the handlebar can also be displaced in the sense of an opening movement of the movable contact bridge even when the projection of the anchor bracket engages in its recess.
  • the handlebar is designed as a slit plate, in particular essentially a U-shaped plate, that the anchor bracket is arranged within the slot and that the slide is essentially U-shaped, wherein the anchor tab is received at least in the closed position of the movable contact bridge between its legs and that the recess associated with the projection on the anchor tab is provided in one leg of the slide.
  • This embodiment is characterized by a particularly space-saving design of the switching mechanism according to the invention.
  • the armature tab of the magnetic release is designed as an approximately U-shaped sheet metal part that protrudes from a body arranged between the legs of the armature tab, starting from a cutout in the leg. This embodiment withstands the loads particularly well when triggered.
  • the circuit breaker shown in Figure 1 has a contact apparatus made of fixed contact 1, which is connected via a rail 2 to a terminal 3, and a movable contact 5 arranged on a movable contact bridge 4.
  • a contact apparatus made of fixed contact 1, which is connected via a rail 2 to a terminal 3, and a movable contact 5 arranged on a movable contact bridge 4.
  • Actuating button 7 pivotally mounted.
  • the actuating button is coupled to the movable contact bridge 4 via a link 8 and a bridge link 9 which is connected to it in an articulated manner.
  • a jack tab 10 is also articulated, which in turn is movably connected to a pawl 11 pivotably mounted in the housing 6.
  • a deion chamber 12 In the housing 6 of the circuit breaker, as usual, in the area of the contact apparatus, a deion chamber 12, a magnetic release with armature 13 and a bimetallic release 14 are accommodated, which pivot the jack support 15 in the event of an overload, so that the jack 11 is released and the movable contact bridge 4 underneath the effect of the contact spring 16 is pivoted away from the fixed contact 1.
  • the second terminal of the circuit breaker is connected to the bimetallic strip of the bimetallic release 14 via a conductor cable.
  • the end of the contact bridge 4 which carries the movable contact 5 and which is mounted in the housing 6 via a pin 17 which engages in an elongated slot 18 oriented transversely to its longitudinal extent is coupled to the armature 13 of the magnetic release via an armature tab 19.
  • the anchor bracket is, for example, an approximately U-shaped sheet metal part, the free ends of the legs of this sheet metal part being connected to the movable contact bridge 4.
  • a body 21 is received between the legs 20 of the anchor plate 19, from which protrusions 22 protrude on both sides, which penetrate corresponding recesses in the legs 20 of the anchor plate 19.
  • the projections 22 have the substantially wedge-shaped shape shown in FIG. 1, with the edge 23 pointing towards the handlebar 8. In this embodiment, the projection 22 rests with its edge 23 on the handlebar 8 or on the slide 27 guided on it, so that it is problem-free and rapid penetration of the projection 22 into the recess 32 is possible.
  • the handlebar 8 itself has the shape shown in FIG. 2 and is articulated via tabs 24 to the actuation button 7 and via tabs 25 to the bridge tab 9 and the jack tab 10.
  • a slide 27 is slidably received between the legs 26 of the substantially U-shaped link 8.
  • the legs 26 have ribs 28 on their inside and the slide 27 has corresponding grooves.
  • the slide 27 is pulled by a spring 30, which is stretched between the webs of the link 8 and the slide 27 against a stop 29, so that it can be moved against the action of the spring 30 towards the end of the link 8, the is assigned to the movable contact bridge, ie away from the operating button 7.
  • the position of the slide 27 relative to the handlebar 8 is precisely defined by the stop 29 when the handlebar 8 is pushed forward when the movable contact bridge 4 is closed.
  • the slide 27 can move away from its stop 29 on the handlebar 8 and maintain its position even when the handlebar 8 is pushed back, as long as the projection 22 on the armature tab 19 of the magnetic trigger engages in its recess 32.
  • each leg 31 of the slide 27 a recess 32 is provided, into which the projections 22 of the anchor bracket 19 engage in the closed position of the circuit breaker switching mechanism shown in FIG. 1.
  • the handlebar 8 is pushed forward and acts on the movable contact bridge 4 via the anchor tab 9 in the sense of a closing movement.
  • the movable contact bridge 4 is coupled to the armature tab 19 and the armature tab 19 rests on the handlebar 8 via the projections 22 provided on it on the surface of the slide 27 facing the magnetic release, the contact 5 of the movable contact bridge 4 is prevented from dealing with it Fully approach fixed contact 1.
  • the projections 22 are on the anchorage see 19 still in the area of the recesses 32 of the slide 27. This is therefore initially held back by the projections 22 so that it executes a relative movement with respect to the link 8, in which the spring 30 is tensioned. As soon as the projections 22 come out of the recesses 32, the slide 27 is pulled again by the spring 30 into the position shown in FIG. 2 and defined by the stops 29.

Landscapes

  • Breakers (AREA)

Description

Die Erfindung betrifft eine Schaltmechanik für Leitungsschutzschalter, bei der die Kontraktbrücke, die über ein Spiel aufweisendes Lager im Gehäuse verschwenkbar gelagert ist, einerseits, vorzugsweise über eine Brückenlasche, mit einem Lenker, der seinerseits mit einem Betätigungsknopf gekuppelt ist, und anderseits mit dem Anker des Magnetauslösers über eine Ankerlasche gelenkig verbunden ist, wobei sich die Bewegungsbahnen von Ankerlasche und Lenker kreuzen.The invention relates to a switching mechanism for circuit breakers, in which the contract bridge, which is pivotably mounted in the housing via a bearing having play, on the one hand, preferably via a bridge bracket, with a handlebar, which in turn is coupled with an actuation button, and on the other hand with the armature of the Magnetic trigger is articulated via an anchor bracket, the paths of movement of the anchor bracket and handlebar intersect.

Sollen mit einer solchen, aus der AT-B-237 724 bekannten Schaltmechanik ausgerüstete Leitungsschutzschalter beispielsweise nach einem Auslösefall über ihren Betätigungsknopf wieder geschlossen werden, dann ist es, insbesondere bei höheren Stromstärken wesentlich, daß der bewegliche Kontakt nicht zögernd in Anlage an den Festkontakt bewegt wird. Bei den üblichen Schaltmechaniken für Leitungsschutzschalter hängt die Schnelligkeit der Bewegung des beweglichen Kontaktes ausschließlich davon ab, wie rasch der Betätigungsknopf verschwenkt wird. Dies kann zur Folge haben, daß sich beim Schließen des Leitungsschutzschalters ein Lichtbogen bildet und der Kontaktapparat beschädigt oder zerstört wird oder eine Verschweißung der beiden Kontakte auftritt.If circuit breakers equipped with such a switching mechanism known from AT-B-237 724 are to be closed again via their actuation button, for example after a trip, then it is essential, especially at higher current strengths, that the movable contact does not move hesitantly in contact with the fixed contact becomes. With the usual switching mechanisms for miniature circuit breakers, the speed of the movement of the movable contact depends solely on how quickly the actuating button is pivoted. This can result in an arc forming when the circuit breaker is closed and the contact apparatus is damaged or destroyed or the two contacts are welded together.

Der Erfindung liegt die Aufgabe zugrunde, eine Schaltmechanik der eingangs genannten Gattung derart weiterzubilden, daß, ohne die grundliegende Konstruktion von Leitungsschutzschaltern ändern zu müssen, das Schließen des Kontaktapparates, unabhängig von der Schnelligkeit der Bewegung des Betätigungsknopfes, rasch erfolgt.The invention has for its object to develop a switching mechanism of the type mentioned in such a way that, without having to change the basic construction of circuit breakers, the closing of the contact apparatus takes place quickly, regardless of the speed of the movement of the actuating button.

Dies wird erfindungsgemäß dadurch erreicht, daß an der Ankerlasche des Magnetauslösers wenigstens ein Vorsprung vorgesehen ist, daß der Vorsprung während der Bewegung des Lenkers in seine, der Schließstellung des beweglichen Kontaktes entsprechende Lage an der dem Magnetauslöser zugekehrten Fläche des Lenkers anliegt, wobei der Kontakt der Kontaktbrücke im Abstand vom Festkontakt gehalten ist, und daß der Vorsprung in der der Schließstellung der beweglichen Kontaktbrücke entsprechenden Lage des Lenkers in eine Ausnehmung im Lenker eingreift.This is achieved according to the invention in that at least one projection is provided on the armature tab of the magnetic release, that the projection bears during the movement of the handlebar into its position corresponding to the closed position of the movable contact on the surface of the handlebar facing the magnetic release, the contact of the Contact bridge is held at a distance from the fixed contact, and that the projection engages in a recess in the handlebar in the position of the handlebar corresponding to the closed position of the movable contact bridge.

Wird bei der erfindungsgemäß ausgeführten Schaltmechanik der Betätigungsknopf verschwenkt, dann wird das den Kontakt tragende Ende der beweglichen Kontaktbrücke, das ja mit dem Anker des Magnetauslösers gekuppelt ist, unabhängig von der Bewegung des Lenkers im Abstand vom Festkontakt gehalten, da der Vorsprung der Ankerlasche des Magnetauslösers am Lenker, und zwar auf dessen dem Magnetauslöser zugekehrten Seite anliegt. Während dieser Bewegung wird die Kontaktfeder bereits vorgespannt, was möglich ist, da die bewegliche Kontaktbrücke über ein Spiel aufweisendes Lager (quer zur Längserstreckung der Kontaktbrücke ausgerichteter Langschlitz in dieser, in den ein gehäusefester Lagerzapfen eingereift) im Gehäuse verschwenkbar gelagert ist. Hat nun der Lenker seine der Schließstellung der beweglichen Kontaktbrücke entsprechende Einlage beinahe erreicht, dann rutscht der Vorsprung an der Ankerlasche des Magnetauslösers in die im Lenker vorgesehene Ausnehmung und die bewegliche Kontaktbrücke wird unter dem Druck der Kontaktfeder schlagartig auf den Festkontakt zu verschwenkt.If the actuating button is pivoted in the switching mechanism designed according to the invention, then the contact-carrying end of the movable contact bridge, which is coupled to the armature of the magnetic release, is kept at a distance from the fixed contact, regardless of the movement of the handlebar, since the projection of the armature tab of the magnetic release on the handlebar, namely on the side facing the magnetic release. During this movement, the contact spring is already pretensioned, which is possible because the movable contact bridge is pivotably mounted in the housing via a bearing having a play (long slot aligned transversely to the longitudinal extension of the contact bridge, into which a bearing journal engages). Now that the handlebar has almost reached its insert corresponding to the closed position of the movable contact bridge, the projection on the anchor plate of the magnetic release slides into the recess provided in the handlebar and the movable contact bridge is suddenly swung onto the fixed contact under the pressure of the contact spring.

In einer Ausführungsform der Erfindung ist vorgesehen, daß die Ausnehmung in einem im oder am Lenker verschiebbar geführten Schieber vorgesehen ist, der von einer Feder, insbesondere einer Zugfeder im Sinne einer Bewegung in eine Stellung belastet ist, in der der Vorsprung an der Ankerlasche in der Schließstellung der beweglichen Kontaktbrücke in die Ausnehmung eingreift.In one embodiment of the invention it is provided that the recess is provided in a slide which is displaceably guided in or on the handlebar and which is loaded by a spring, in particular a tension spring in the sense of a movement into a position in which the projection on the anchor bracket in the The closed position of the movable contact bridge engages in the recess.

Bei dieser Ausführungsform wird auf besonders einfache Weise das Öffnen des Leitungsschutzschalters über den Betätigungsknopf der Schaltmechanik nicht behindert, da der Lenker auch bei in seine Ausnehmung eingreifendem Vorsprung der Ankerlasche im Sinne einer Öffnungsbewegung der beweglichen Kontaktbrücke verschoben werden kann.In this embodiment, the opening of the circuit breaker via the actuating button of the switching mechanism is not impeded in a particularly simple manner, since the handlebar can also be displaced in the sense of an opening movement of the movable contact bridge even when the projection of the anchor bracket engages in its recess.

In einer praktischen Ausführungsform der Erfindung kann vorgesehen sein, daß der Lenker als einen Schlitz aufweisende Platte, insbesondere im wesentlichen U-förmige Platte, ausgebildet ist, daß die Ankerlasche innerhalb des Schlitzes angeordnet ist und daß der Schieber im wesentlichen U-förmig ausgebildet ist, wobei die Ankerlasche wenigstens in der Schließstellung der beweglichen Kontaktbrücke zwischen seinen Schenkeln aufgenommen ist und daß die dem Vorsprung an der Ankerlasche zugeordnete Ausnehmung in einem Schenkel des Schiebers vorgesehen ist. Diese Ausführungsform zeichnet sich durch eine besonders raumsparende Ausbildung der erfindungsgemäßen Schaltmechanik aus.In a practical embodiment of the invention it can be provided that the handlebar is designed as a slit plate, in particular essentially a U-shaped plate, that the anchor bracket is arranged within the slot and that the slide is essentially U-shaped, wherein the anchor tab is received at least in the closed position of the movable contact bridge between its legs and that the recess associated with the projection on the anchor tab is provided in one leg of the slide. This embodiment is characterized by a particularly space-saving design of the switching mechanism according to the invention.

Bevorzugt ist im Rahmen der Erfindung vorgesehen, daß die Ankerlasche des Magnetauslösers als ein etwa U-förmig gebogener Blechteil ausgebildet ist, daß der Vorsprung von einem zwischen den Schenkeln der Ankerlasche angeordneten Körper, ausgehend durch einen Auschnitt im Schenkel, nachaußen ragt. Diese Ausführungsform hält den Belastungen im Auslösefall besonders gut stand.It is preferably provided in the context of the invention that the armature tab of the magnetic release is designed as an approximately U-shaped sheet metal part that protrudes from a body arranged between the legs of the armature tab, starting from a cutout in the leg. This embodiment withstands the loads particularly well when triggered.

Weitere Einzelheiten der Erfindung ergeben sich aus der nachstehenden Beschreibung des in den Zeichnungen wiedergegebenen Ausführungsbeispieles. Es zeigt

  • Figur 1 einen Leitungsschutzschalter in Seitenansicht bei abgenommener Oberschale,
  • Figur 2 in Ansicht den das Betätigungsorgan mit der beweglichen Kontaktbrücke kuppelnden Lenker und
  • Figur 3 schematisch in Seitenansicht eine Ankerlasche des Magnetauslösers.
Further details of the invention result from the following description of the exemplary embodiment shown in the drawings. It shows
  • FIG. 1 shows a circuit breaker in a side view with the top shell removed,
  • Figure 2 in view of the actuator coupling the actuator with the movable contact bridge and
  • Figure 3 schematically in side view of an Kerlasche the magnetic trigger.

Der in Figur 1 gezeigte Leitungsschutzschalter besitzt einen Kontaktapparat aus Festkontakt 1, der über eine Schiene 2 mit einer Klemme 3 verbunden ist, und einen an einer beweglichen Kontaktbrücke 4 angeordneten beweglichen Kontakt 5. Zur Betätigung der beweglichen Kontaktbrücke 4 ist im Gehäuse 6 des Leitungsschutzschalters ein Betätigungsknopf 7 verschwenkbar gelagert. Der Betätigungsknopf ist über einen Lenker 8 und eine mit diesem gelenkig verbundene Brückenlasche 9 mit der beweglichen Kontaktbrücke 4 gekuppelt. Mit dem der Kontaktbrücke 4 zugeordneten Ende des Lenkers 8 ist ebenfalls eine Klinkenlasche 10 gelenkig verbunden, die ihrerseits mit einer im Gehäuse 6 verschwenkbar gelagerten Klinke 11 beweglich verbunden ist.The circuit breaker shown in Figure 1 has a contact apparatus made of fixed contact 1, which is connected via a rail 2 to a terminal 3, and a movable contact 5 arranged on a movable contact bridge 4. To actuate the movable contact bridge 4 there is a in the housing 6 of the circuit breaker Actuating button 7 pivotally mounted. The actuating button is coupled to the movable contact bridge 4 via a link 8 and a bridge link 9 which is connected to it in an articulated manner. With the end of the link 8 assigned to the contact bridge 4, a jack tab 10 is also articulated, which in turn is movably connected to a pawl 11 pivotably mounted in the housing 6.

Im Gehäuse 6 des Leitungsschutzschalters sind weiters, wie üblich, im Bereich des Kontaktapparates eine Deionkammer 12, ein Magnetauslöser mit Anker 13 und ein Bimetallauslöser 14 untergebracht, die im Überlastfall die Klinkenauflage 15 verschwenken, so daß die Klinke 11 freigegeben und die bewegliche Kontaktbrücke 4 unter der Wirkung der Kontaktfeder 16 vom Festkontakt 1 weg verschwenkt wird. Am Bimetallstreifen des Bimetallauslösers 14 ist über ein Leiterseil die zweite Klemme des Leitungsschutzschalters angeschlossen.In the housing 6 of the circuit breaker, as usual, in the area of the contact apparatus, a deion chamber 12, a magnetic release with armature 13 and a bimetallic release 14 are accommodated, which pivot the jack support 15 in the event of an overload, so that the jack 11 is released and the movable contact bridge 4 underneath the effect of the contact spring 16 is pivoted away from the fixed contact 1. The second terminal of the circuit breaker is connected to the bimetallic strip of the bimetallic release 14 via a conductor cable.

Das den beweglichen Kontakt 5 tragende Ende der Kontaktbrücke 4, die im Gehäuse 6 über einen Zapfen 17 gelagert ist, der in einen quer zu ihrer Längserstreckung ausgerichteten Langschlitz 18 eingreift, ist mit dem Anker 13 des Magnetauslösers über eine Ankerlasche 19 gekuppelt.The end of the contact bridge 4 which carries the movable contact 5 and which is mounted in the housing 6 via a pin 17 which engages in an elongated slot 18 oriented transversely to its longitudinal extent is coupled to the armature 13 of the magnetic release via an armature tab 19.

Wie Figur 3 zeigt, ist die Ankerlasche beispielsweise ein etwa U-förmig gebogener Blechteil, wobei die freien Enden der Schenkel dieses Blechteils mit der beweglichen Kontaktbrücke 4 verbunden sind. Zwischen den Schenkeln 20 der Ankerlasche 19 ist ein Körper 21 aufgenommen, von dem nach beiden Seiten Vorsprünge 22 wegragen, die entsprechende Ausnehmungen in den Schenkeln 20 der Ankerlasche 19 durchsetzen. Die Vorsprünge 22 haben die aus Figur 1 ersichtliche, im wesentlichen keilförmige Form mit zum Lenker 8 hinweisender Kante 23. Bei dieser Ausführungsform liegt der Vorsprung 22 mit seiner Kante 23 am Lenker 8 bzw. am an diesem geführten Schieber 27 an, so daß ein problemloses und rasches Eindringen des Vorsprunges 22 in die Ausnehmung 32 möglich ist.As shown in FIG. 3, the anchor bracket is, for example, an approximately U-shaped sheet metal part, the free ends of the legs of this sheet metal part being connected to the movable contact bridge 4. A body 21 is received between the legs 20 of the anchor plate 19, from which protrusions 22 protrude on both sides, which penetrate corresponding recesses in the legs 20 of the anchor plate 19. The projections 22 have the substantially wedge-shaped shape shown in FIG. 1, with the edge 23 pointing towards the handlebar 8. In this embodiment, the projection 22 rests with its edge 23 on the handlebar 8 or on the slide 27 guided on it, so that it is problem-free and rapid penetration of the projection 22 into the recess 32 is possible.

Der Lenker 8 selbst besitzt die aus Figur 2 ersichtliche Formgebung und ist über Laschen 24 mit dem Betätigungsknopf 7 und über Laschen 25 mit der Brückenlasche 9 und der Klinkenlasche 10 gelenkig verbunden. Zwischen den Schenkeln 26 des im wesentlichen U-förmig ausgebildeten Lenkers 8 ist ein Schieber 27 verschiebbar aufgenommen. Hiezu weisen die Schenkel 26 an ihrer Innenseite Rippen 28 und der Schieber 27 entsprechende Nuten auf.The handlebar 8 itself has the shape shown in FIG. 2 and is articulated via tabs 24 to the actuation button 7 and via tabs 25 to the bridge tab 9 and the jack tab 10. A slide 27 is slidably received between the legs 26 of the substantially U-shaped link 8. For this purpose, the legs 26 have ribs 28 on their inside and the slide 27 has corresponding grooves.

Der Schieber 27 wird von einer Feder 30, die zwischen den Stegen des Lenkers 8 und des Schiebers 27 gespannt ist, gegen einen Anschlag 29 gezogen, so daß er entgegen der Wirkung der Feder 30 auf das Ende des Lenkers 8 hin verschoben werden kann, das der beweglichen Kontaktbrücke zugeordnet ist, d.h. vom Betätigungsknopf 7 weg. Durch den Anschlag 29 ist die Lage des Schiebers 27 gegenüber dem Lenker 8 genau festgelegt, wenn der Lenker 8 beim Schließen der beweglichen Kontaktbrücke 4 vorgeschoben wird. Beim Öffnen des Kontaktapparates, d. h. beim Zurückschwenken der beweglichen Kontaktbrücke 4, kann sich der Schieber 27 von seinem Anschlag 29 am Lenker 8 wegbewegen und seine Lage auch beim Zurückschieben des Lenkers 8 beibehalten, solang der Vorsprung 22 an der Ankerlasche 19 des Magnetauslösers in seine Ausnehmung 32 eingreift.The slide 27 is pulled by a spring 30, which is stretched between the webs of the link 8 and the slide 27 against a stop 29, so that it can be moved against the action of the spring 30 towards the end of the link 8, the is assigned to the movable contact bridge, ie away from the operating button 7. The position of the slide 27 relative to the handlebar 8 is precisely defined by the stop 29 when the handlebar 8 is pushed forward when the movable contact bridge 4 is closed. When opening the contact apparatus, d. H. when the movable contact bridge 4 is pivoted back, the slide 27 can move away from its stop 29 on the handlebar 8 and maintain its position even when the handlebar 8 is pushed back, as long as the projection 22 on the armature tab 19 of the magnetic trigger engages in its recess 32.

In jedem Schenkel 31 des Schiebers 27 ist eine Ausnehmung 32 vorgesehen, in welche die Vorsprünge 22 der Ankerlasche 19 in der in Fig. 1 gezeigten Schließstellung der Schaltmechanik des Leitungsschutzschalters eingreifen.In each leg 31 of the slide 27, a recess 32 is provided, into which the projections 22 of the anchor bracket 19 engage in the closed position of the circuit breaker switching mechanism shown in FIG. 1.

Wird nun ausgehend von der geöffneten Stellung des Kontaktapparates der Betätigungsknopf 7 aus der in Figur 1 strichliert eingezeichneten Stellung in Richtung des Pfeiles verschwenkt, dann wird der Lenker 8 vorgeschoben und wirkt über die Ankerlasche 9 im Sinne einer Schließbewegung auf die bewegliche Kontaktbrücke 4 ein. Da aber die bewegliche Kontaktbrücke 4 mit der Ankerlasche 19 gekuppelt ist und die Ankerlasche 19 über die an ihr vorgesehenen Vorsprünge 22 an der dem Magnetauslöser zugekehrten Fläche des Schiebers 27 am Lenker 8 anliegt, wird der Kontakt 5 der beweglichen Kontaktbrücke 4 daran gehindert, sich dem Festkontakt 1 vollständig anzunähern.If, starting from the open position of the contact apparatus, the actuating button 7 is pivoted in the direction of the arrow from the position shown in dashed lines in FIG. 1, the handlebar 8 is pushed forward and acts on the movable contact bridge 4 via the anchor tab 9 in the sense of a closing movement. However, since the movable contact bridge 4 is coupled to the armature tab 19 and the armature tab 19 rests on the handlebar 8 via the projections 22 provided on it on the surface of the slide 27 facing the magnetic release, the contact 5 of the movable contact bridge 4 is prevented from dealing with it Fully approach fixed contact 1.

Beim weiteren Vorschieben des Lenkers 8 wird die Gelenkverbindung aus den Brückenlaschen 9 und Klinkenlasche 10 zunehmend gestreckt, wobei aber der bewegliche Kontakt 5 von der Ankerlasche 19 über deren Vorsprünge 22 zurückgehalten wird, so daß sich die Kontaktbrücke 4 im Bereich ihres Spiels aufweisenden Lagers aus Zapfen 17 und Schlitz 18 unter zunehmender Spannung der Kontaktfeder 16 bewegt.As the handlebar 8 is pushed forward, the articulated connection from the bridge plates 9 and the latch plate 10 is increasingly stretched, but the movable contact 5 is retained by the anchor plate 19 via its projections 22, so that the contact bridge 4 is made of pins in the region of its play 17 and slot 18 moves under increasing tension of the contact spring 16.

Sobald der Lenker 8 so weit vorgeschoben wurde, daß die Vorsprünge 22 an der Ankerlasche 19 in die Ausnehmungen 32 in den Schenkeln 31 des Schiebers 27 eindringen können, wird die Kontaktbrücke 4 schlagartig in ihre in Figur 1 gezeigte Schließstellung bewegt. Es ist ersichtlich, daß die Bewegung der Schaltbrücke 4, unabhängig von der Schnelligkeit des Herumlegens des Betätigungshebels 7, schlagartig erfolgt.As soon as the handlebar 8 has been advanced so far that the projections 22 on the anchor bracket 19 can penetrate into the recesses 32 in the legs 31 of the slide 27, the contact bridge 4 is suddenly moved into the closed position shown in FIG. It can be seen that the movement of the switching bridge 4 takes place suddenly, regardless of the rapidity of the actuating lever 7 being put around.

Will man den Leitungsschutzschalter durch Betätigen des Betätigungsknopfes 7 öffnen, dann wird der Hebel 7 aus der in Figur 1 voll eingezeichneten Stellung entgegen dem eingezeichneten Pfeil in die strichliert eingezeichnete Stellung herumgelegt. Dabei wird der Lenker 8 zurückgezogen und die Gelenkverbindung aus Brückenlasche 9 und Klinkenlasche 10 geknickt, so daß die Kontaktbrücke 4 vom Festkontakt 1 wegschwenkt.If you want to open the circuit breaker by actuating the actuating button 7, the lever 7 is turned from the position shown in full in Figure 1 against the arrow shown in the position shown in dashed lines. The handlebar 8 is withdrawn and the articulation of the bridge plate 9 and the latch plate 10 is bent, so that the contact bridge 4 swings away from the fixed contact 1.

Am Beginn der Rückbewegung des Lenkers 8 befinden sich die Vorsprünge 22 an der Ankerlasehe 19 noch im Bereich der Ausnehmungen 32 des Schiebers 27. Dieser wird daher von den Vorsprüngen 22 zunächst noch zurückgehalten, so daß er gegenüber dem Lenker 8 eine Relativbewegung ausführt, bei der die Feder 30 gespannt wird. Sobald die Vorsprünge 22 aus den Ausnehmungen 32 frei kommen, wird der Schieber 27 von der Feder 30 wieder in die in Figur 2 gezeigte, durch die Anschläge 29 definierte Lage gezogen.At the beginning of the return movement of the handlebar 8, the projections 22 are on the anchorage see 19 still in the area of the recesses 32 of the slide 27. This is therefore initially held back by the projections 22 so that it executes a relative movement with respect to the link 8, in which the spring 30 is tensioned. As soon as the projections 22 come out of the recesses 32, the slide 27 is pulled again by the spring 30 into the position shown in FIG. 2 and defined by the stops 29.

Es ist ersichtlich, daß aufgrund der erfindungsgemäßen Ausbildung von Lenker 8 und Ankerlasche 19 mit einem oder zwei Vorsprüngen 22 ohne Beeinträchtigung oder Änderung der übrigen Schaltmechanik des Leitungsschutzschalters das gewünschte schlagartige und von der Schnelligkeit der Betätigung des Betätigungsknopfes 7 unabhängige Schließen des Kontaktapparates erreicht wird.It can be seen that due to the inventive design of the handlebar 8 and anchor bracket 19 with one or two projections 22 without impairing or changing the other switching mechanism of the circuit breaker, the desired abrupt and independent of the speed of actuation of the operating button 7 closing the contact apparatus is achieved.

Obwohl bis jetzt immer von zwei Vorsprüngen an der Ankerlasche des Magnetauslösers gesprochen wurde und wobei diese Ausführungsform im Sinne einer gleichmäßigeren Belastung bevorzugt ist, ist es grundsätzlich möglich, an der Ankerlasche nur einen von einer Seite derselben abstehenden Vorsprung und dementsprechend an dem Lenker bzw. Schieber nur eine Ausnehmung vorzusehen.Although two projections on the anchor plate of the magnetic release have always been spoken of up to now and this embodiment is preferred in the sense of a more uniform load, it is fundamentally possible to have only one projection projecting from one side of the anchor plate and accordingly on the handlebar or slide to provide only one recess.

Claims (4)

1. Switching mechanism for a protective power circuit breaker, in which the contact bridge (4), which is pivotally mounted in the housing (6) by way of a bearing (17,18) having play, is connected in articulated manner on the one hand, preferably via a bridge plate (9), to a guide rod (8) which for its part is coupled to an actuating knob (7) and on the other hand to the armature (13) of the magnet release via an armature plate (19), whereby the paths of motion of the armature plate (19) and the guide rod (8) cross, characterised in that at least one projection (22) is provided on the armature plate (19) of the magnet release, in that the projection (22) lies against the face of the guide rod (8) facing the magnet release during motion of the guide rod (8) into its position corresponding to the closed position of the movable contact (5), whereby the contact (5) of the contact bridge (4) is held at a distance from the fixed contact (1), and in that the projection (22) engages in a recess (32) in the guide rod (8) in the position corresponding to the closed position of the movable contact bridge (4).
2. Mechanism according to Claim 1, characterised in that the recess (32) is provided in a slide (27) which is displaceably guided in or on the guide rod (8), and which is acted upon by a spring, in particular a tension spring (30), in the direction of motion into a position in which the projection (22) on the armature plate (19) engages in the recess (32), in the closed position of the movable contact bridge (4).
3. Mechanism according to Claim 2, characterised in that the guide rod (8) is constructed as a plate, in particular substantially a U-shaped plate, having a slit, in that the armature plate (19) is arranged within the slit and in that the slide (27) is substantially constructed to be U-shaped, whereby the armature plate (19), at least in the closed position of the movable contact bridge (4), is received between the legs (31) of the slide (27), and in that the recess (32) associated with the projection (22) on the armature plate (19) is provided in a leg (31) of the slide (27).
4. Mechanism according to one of Claims 1 to 3, characterised in that the armature plate (19) of the magnet release is constructed as a sheet- metal part which is bent into an approximate U-shape. and in that the projection (22), starting from a body (21) arranged between the legs (20) of the armature plate (19), projects outwards through a cut-out in the leg (20).
EP19840890226 1983-11-28 1984-11-22 Switching mechanism for a protective power circuit breaker Expired EP0146528B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT4157/83 1983-11-28
AT415783A AT378284B (en) 1983-11-28 1983-11-28 SWITCHING MECHANICS FOR CIRCUIT BREAKER

Publications (3)

Publication Number Publication Date
EP0146528A2 EP0146528A2 (en) 1985-06-26
EP0146528A3 EP0146528A3 (en) 1987-01-21
EP0146528B1 true EP0146528B1 (en) 1989-01-11

Family

ID=3560406

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840890226 Expired EP0146528B1 (en) 1983-11-28 1984-11-22 Switching mechanism for a protective power circuit breaker

Country Status (3)

Country Link
EP (1) EP0146528B1 (en)
AT (1) AT378284B (en)
DE (1) DE3476137D1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3936610C2 (en) * 1989-11-03 2001-11-22 Schupa Gmbh Device for the sudden switching on of movably mounted contact levers, in particular for a two-pole residual current circuit breaker
DE4008506C2 (en) * 1990-03-16 1994-03-17 Willem Brandhorst Method for controlling the switching movement of an electrical switch and electrical switch
CN118098894B (en) * 2024-04-25 2024-07-19 浙江天正电气股份有限公司 Electromagnetic tripping mechanism and circuit breaker

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL39632C (en) * 1933-07-05
US2251703A (en) * 1934-11-07 1941-08-05 Bulldog Electric Prod Co Circuit breaker
AT237724B (en) * 1962-05-15 1965-01-11 Biegelmeier Gottfried AC line circuit breaker with impact tie rod
DE2132738B1 (en) * 1971-07-01 1972-07-06 Ellenberger & Poensgen Single or multi-pole overcurrent switch with thermal and / or electromagnetic release
DE2240125C3 (en) * 1972-08-16 1975-01-02 Starkstrom-Schaltgeraetefabrik E. Spindler & O. Deissler, 5277 Rodt Switching lock with snap action
DE3031482A1 (en) * 1980-08-21 1982-04-01 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt SWITCHING MECHANISM FOR CIRCUIT BREAKER
DE8209597U1 (en) * 1982-04-03 1986-11-13 Ellenberger & Poensgen Gmbh, 8503 Altdorf Overcurrent protection switch

Also Published As

Publication number Publication date
DE3476137D1 (en) 1989-02-16
ATA415783A (en) 1984-11-15
EP0146528A2 (en) 1985-06-26
EP0146528A3 (en) 1987-01-21
AT378284B (en) 1985-07-10

Similar Documents

Publication Publication Date Title
DE3411275C2 (en)
DE3535567A1 (en) REMOTE CONTROLLED INTERRUPTER
EP0412953B1 (en) Automatic cut-out switch
EP0680065A1 (en) Overload protective switch
DE3323474C2 (en) Circuit breaker
DE2504954B2 (en) MECHANICAL JUMPER, IN PARTICULAR FOR SMALL HIGH-PERFORMANCE SELF-SWITCHES
DE3008249C2 (en) Circuit breaker with a manually movable trigger
DE3037355C2 (en) Compact design circuit breaker with a trip pin
DE4428285C1 (en) Push button switch especially mains switch
DE2507454B1 (en) MULTI-POLE OVERCURRENT SWITCH
DE1638114B2 (en) CURRENT LIMITING SWITCH
EP3175471B1 (en) Switching device
EP0146528B1 (en) Switching mechanism for a protective power circuit breaker
EP0091040B1 (en) Protective excess current circuit-breaking switch
DE1938929A1 (en) Circuit breaker
DE1638157B1 (en) SELF SWITCH
DE3213493A1 (en) Electrical circuit breaker for low-voltage switching apparatuses, especially motor protection circuit breakers
EP0444010A2 (en) Switch latch for fault-current protective switch
DE598210C (en) Automatic installation switch with push button control and a contact element that can be moved perpendicular to the push button axis
EP0997922A2 (en) Switch with a position or status indicating device, in particular for a circuit breaker
DE623237C (en) Auto double breaking installation switch
DE3400286A1 (en) Switching device, especially an overload switch, which is switched on by pressing in and thereafter by releasing a push button, and which is tripped by deformation of a bimetallic leaf
DE1638157C (en) Auto switch
DE3049518C2 (en) Lock mechanism for a low-voltage circuit breaker
DE1788148C3 (en) Current limit 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

AK Designated contracting states

Designated state(s): DE FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19870206

17Q First examination report despatched

Effective date: 19880520

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3476137

Country of ref document: DE

Date of ref document: 19890216

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

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19911108

Year of fee payment: 8

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

Ref country code: FR

Payment date: 19911127

Year of fee payment: 8

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19920113

Year of fee payment: 8

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

Ref country code: GB

Effective date: 19921122

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19921122

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

Ref country code: FR

Effective date: 19930730

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

Ref country code: DE

Effective date: 19930901

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST