EP1218900B1 - Device for arranging the actuating shaft of a low-voltage circuit-breaker and multipole low-voltage circuit breaker with a device for arranging the actuating shaft - Google Patents

Device for arranging the actuating shaft of a low-voltage circuit-breaker and multipole low-voltage circuit breaker with a device for arranging the actuating shaft Download PDF

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Publication number
EP1218900B1
EP1218900B1 EP00967594A EP00967594A EP1218900B1 EP 1218900 B1 EP1218900 B1 EP 1218900B1 EP 00967594 A EP00967594 A EP 00967594A EP 00967594 A EP00967594 A EP 00967594A EP 1218900 B1 EP1218900 B1 EP 1218900B1
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EP
European Patent Office
Prior art keywords
bearing
coupling levers
bearing body
voltage circuit
actuating shaft
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
EP00967594A
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German (de)
French (fr)
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EP1218900A1 (en
Inventor
Michael Bach
Michael Sebekow
Günther SEIDLER-STAHL
Detlev Schmidt
Ingo Thiede
Sezai TÜRKMEN
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Siemens AG
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Siemens AG
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Publication of EP1218900A1 publication Critical patent/EP1218900A1/en
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Publication of EP1218900B1 publication Critical patent/EP1218900B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H2003/326—Driving mechanisms, i.e. for transmitting driving force to the contacts using bearings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H2009/0088—Details of rotatable shafts common to more than one pole or switch unit

Definitions

  • the invention is in the field of constructive design of a circuit breaker used in low voltage networks and is in one piece in the design of the storage trained switching shaft to apply such a switch.
  • Low voltage circuit breakers have one or more Switching poles on.
  • the fixed and movable switch contacts existing switching contact systems of these switching poles are usually mechanically connected to coupling levers arranged on a switching shaft common to all switching poles are.
  • the one piece trained shift shaft equipped with all coupling levers regardless of the bearing assembly in its installed position be prepositioned.
  • the selector shaft is in the edge open recesses perpendicular to the longitudinal axis of the Switch shaft arranged walls positioned.
  • a shaft bearing which consists of two half shells, in used in the axial direction in each of the recesses.
  • the selector shaft is outside the points of application of the switching forces are mounted radially.
  • the location of the axial bearing is not mentioned (DE 44 16 090 C1).
  • this object is achieved in that the bearing body comprising the selector shaft half-shell is attached to the front wall of the switching pole and that a first section of the bearing body between the coupling levers is arranged and lateral guide surfaces for the forms coupling lever connected to the selector shaft.
  • This configuration allows the bearing assembly and the Switch shaft can be replaced independently at any time.
  • the bearing assembly is simple and can therefore be manufactured inexpensively. It is still compact and can therefore be easily and space-savingly installed.
  • the bearing of the selector shaft is largely as far as possible independent of tolerance, since the selector shaft is both radial and is also axially supported by the same bearing body.
  • Stops for the on and off position of the switch contacts are therefore simple according to a development of the invention realizable that a second portion of the bearing body Coupling lever protrudes axially and stop surfaces for the coupling lever forms.
  • the switching shaft is used in multi-pole low-voltage circuit breakers appropriately used in such a way that a bearing assembly at both ends of the selector shaft is assigned to the axially outer movable switching contacts. As a result, the bearing of the selector shaft is determined statically.
  • FIG. 1 shows a bearing assembly with a bearing body designed according to the invention
  • FIG. 2 shows a one-piece shift shaft with two bearing assemblies according to FIG. 1 arranged at its ends in a perspective view
  • Figures 3 and 4 are sectional views of a bearing assembly arranged according to Figure 2
  • a bearing assembly 1 has a bearing body 2 and a catching device 3.
  • the bearing body 2 is in divided several sub-areas 4,5,6,7,71 and 72, which the Bearing of a control shaft 8 shown in Figure 2, the Stop of coupling levers 9 and 10 when switching on and off, the inclusion of the safety gear 3 and the attachment the bearing assembly 1 on a housing front wall 25 of the Switch poles serve.
  • the shift shaft 8 is near its ends stored by two bearing assemblies 1 according to Figure 1.
  • the mechanical connection of one, one outer switching pole associated, movable switching contact 11th serve and are arranged firmly on the control shaft 8, and at the same time for the axial mounting of the control shaft 8 be used.
  • Each bearing assembly 1 has a first one Subarea 4, the axial width of which is the distance between the coupling levers 9 and 10 is adjusted.
  • This first section 4 of the bearing body 2 thus protrudes with little axial play between the coupling lever 9 and 10 and includes the shift shaft 8 half-shell-shaped in a direction that the when switching on occurring forces is opposite.
  • lateral guide surfaces 13 see FIG. 1 for those with the Shift shaft 8 fixed coupling lever 9 and 10.
  • a second section 5 projects above the coupling levers 9 and 10 axially and forms stop surfaces 14 (see FIG. 1) and 15 for the coupling lever 9 and 10 to limit the movement of the Switching shaft 8.
  • the safety gear 3 of each bearing assembly 1 has a catch hook 16, which during the switch-off process the two coupling levers 9 and 10 passing through bolts 17 (see also FIG. 4).
  • a third area 6 of the bearing body 2 is in a window-like recess 18 of the catch hook 16 arranged on a bearing pin 19 and pivotable against the force of a wire spring 20 stored.
  • the catch hook 16 and the wire bending spring 20 can thus be easy even before assembly of the bearing assembly 1 and can be integrated into the bearing assembly to save space.
  • Figure 3 shows a section through the first and third Section 4 and 6 of the bearing body 2.
  • the window-like Recess 18 for the catch hook 16 has a narrow upper Area 21 (see FIG. 1) and a wider lower one Area 22 (see FIG. 1).
  • the narrow, upper area 21 is adapted to the width of the catch hook 16 and sets this up axially tight for a slight play.
  • the wider, lower one Area 22 serves to additionally accommodate the wire bending spring 20.
  • the coupling levers 9 and 10 are here in the on position.
  • the two bearing assemblies 1 have further sub-areas 7, 71 and 72 (see also FIG. 1) bores 23 and by means of screw connections 24 with a positive and positive fit Housing front wall 25 of the switching poles connected.
  • FIG. 4 shows a section through the second partial area 5 of the bearing body 2, which is axially outside the coupling lever 9 and 10 extends.
  • the coupling levers 9 and 10 are located but here in the off position. At least one of the two coupling levers 9 and 10 is designed so that when switching off a portion 27 of the peripheral edge of this coupling lever on a first surface 14 of the Bearing body 2 bumps.
  • At least one of the two coupling levers 9 and 10 can be one have hook-nose-like arm 28, which during the switch-on process onto a second surface 15 serving as a one-stop of the bearing body bumps.
  • a one-stop is for example in current-limiting low-voltage circuit breakers needed.

Abstract

The aim of the invention is to arrange a pre-positioned actuating shaft (8) of a low-voltage circuit breaker in terms of the effect of the actuating forces, said actuating shaft being fitted with coupling levers ((9) and (10)). The bearing assembly (1) provided for this purpose therefore has a bearing body (2) that is fixed to the front wall of the housing (25) of the actuating pole in such a way as to surround the actuating shaft (8) in the form of a half-shell. A partial area (4) of the bearing assembly protrudes between two coupling levers ((9) and (10)) which are set apart from each other and which are connected by a movable switching contact (11), hereby forming side guiding surfaces (13) for the coupling levers (9) and (10). A bearing assembly (1) of this type can be situated in the two end areas of the actuating shaft (8) in multipole circuit breakers.

Description

Die Erfindung liegt auf dem Gebiet der konstruktiven Gestaltung eines in Niederspannungsnetzen eingesetzten Leistungsschalters und ist bei der Ausgestaltung der Lagerung der einstückig ausgebildeten Schaltwelle eines solchen Schalters anzuwenden.The invention is in the field of constructive design of a circuit breaker used in low voltage networks and is in one piece in the design of the storage trained switching shaft to apply such a switch.

Niederspannungs-Leistungsschalter weisen einen oder mehrere Schaltpole auf. Die aus feststehenden und bewegbaren Schaltkontakten bestehenden Schaltkontaktsysteme dieser Schaltpole sind üblicherweise mechanisch mit Koppelhebeln verbunden, die auf einer allen Schaltpolen gemeinsamen Schaltwelle angeordnet sind.Low voltage circuit breakers have one or more Switching poles on. The fixed and movable switch contacts existing switching contact systems of these switching poles are usually mechanically connected to coupling levers arranged on a switching shaft common to all switching poles are.

Für eine ordnungsgemäße Funktion eines solchen Leistungsschalters ist es wesentlich, daß die Schaltwelle radial präzise und mit geringem axialen Spiel gelagert ist. Eine hierfür geeignete, bekannte Lageranordnung weist im Bereich der Koppelhebel eine Lagerbaugruppe auf, die mit einer Gehäusevorderwand des Schaltpols verbunden ist und einen Lagerkörper mit einer zylindrischen Lagerfläche enthält. Die Herstellung der Schaltwelle und ihre Montage wird durch die Unterteilung in zwei symmetrische Teilstücke erleichtert. Jedes Teilstück ist durch den Hauptlagerkörper radial und einseitig axial gelagert. Zur vollständigen axialen Lagerung sind zwei weitere Hilfslagerkörper notwendig. For the proper functioning of such a circuit breaker it is essential that the control shaft be radially precise and is stored with little axial play. One for this suitable, known bearing arrangement points in the area of Coupling lever on a bearing assembly with a housing front wall the switching pole is connected and a bearing body with a cylindrical bearing surface. The production the selector shaft and its assembly is by the subdivision relieved into two symmetrical sections. Every section is supported radially and axially on one side by the main bearing body. There are two more for complete axial support Auxiliary bearing body necessary.

Im Falle einer einstückigen Schaltwelle wäre diese durch die beidseitig des Hauptlagerkörpers fest angeordneten Koppelhebel unlösbar mit dem Hauptlagerkörper verbunden. Ist der Hauptlagerkörper fehlerhaft, muß mit ihm zusammen die gesamte Schaltwelle ausgewechselt werden (DE 197 39 702 C1).In the case of a one-piece shift shaft, this would be due to the Coupling levers fixedly arranged on both sides of the main bearing body permanently connected to the main bearing body. Is the Main bearing body faulty, the entire bearing together with it Shift shaft to be replaced (DE 197 39 702 C1).

Bei einer anderen bekannten Lageranordnung kann die einstükkig ausgebildete, mit allen Koppelhebeln bestückte Schaltwelle unabhängig von der Lagerbaugruppe in ihrer Einbaulage vorpositioniert werden. Dabei wird die Schaltwelle in randseitig offene Ausnehmungen von senkrecht zur Längsachse der Schaltwelle angeordneten Wänden positioniert. Anschließend wird je ein Wellenlager, das aus zwei Halbschalen besteht, in axialer Richtung in je eine der Ausnehmungen eingesetzt. Durch ein derartiges Wellenlager wird die Schaltwelle außerhalb der Angriffspunkte der Schaltkräfte radial gelagert. Der Ort der axialen Lagerung ist nicht erwähnt (DE 44 16 090 C1).In another known bearing arrangement, the one piece trained shift shaft equipped with all coupling levers regardless of the bearing assembly in its installed position be prepositioned. The selector shaft is in the edge open recesses perpendicular to the longitudinal axis of the Switch shaft arranged walls positioned. Subsequently is a shaft bearing, which consists of two half shells, in used in the axial direction in each of the recesses. With such a shaft bearing, the selector shaft is outside the points of application of the switching forces are mounted radially. The The location of the axial bearing is not mentioned (DE 44 16 090 C1).

Ausgehend von einer Anordnung mit den Merkmalen des Oberbegriffs des Anspruchs 1 (DE 197 39 702 C1) liegt der Erfindung die Aufgabe zugrunde, die Lagerbaugruppe so auszugestalten, daß die in ihrer Einbaulage bereits vorpositionierte, mit den Koppelhebeln versehene Schaltwelle toleranzunempfindlich und montagefreundlich im Angriffspunkt der Schaltkräfte gelagert ist.Starting from an arrangement with the features of the generic term of claim 1 (DE 197 39 702 C1) lies the invention based on the task of designing the bearing assembly in such a way that the already pre-positioned in its installation position with the Coupling levers provided shift shaft insensitive to tolerances and Easily mounted at the point of engagement of the switching forces is.

Gemäß der Erfindung wird diese Aufgabe dadurch gelöst, daß der Lagerkörper die Schaltwelle halbschalenförmig umfassend an der Gehäusevorderwand des Schaltpols befestigt ist und daß ein erster Teilbereich des Lagerkörpers zwischen den Koppelhebeln angeordnet ist und seitliche Führungsflächen für die mit der Schaltwelle verbundenen Koppelhebel bildet. According to the invention, this object is achieved in that the bearing body comprising the selector shaft half-shell is attached to the front wall of the switching pole and that a first section of the bearing body between the coupling levers is arranged and lateral guide surfaces for the forms coupling lever connected to the selector shaft.

Diese Ausgestaltung gestattet es, die Lagerbaugruppe und die Schaltwelle unabhängig voneinander jederzeit auszutauschen.This configuration allows the bearing assembly and the Switch shaft can be replaced independently at any time.

Dabei ist die Lagerbaugruppe einfach aufgebaut und kann somit preisgünstig gefertigt werden. Sie ist weiterhin kompakt gestaltet und kann daher platzsparend und einfach montiert werden. Die Lagerung der Schaltwelle ist im übrigen weitestgehend toleranzunabhängig, da die Schaltwelle sowohl radial als auch axial durch denselben Lagerkörper gelagert ist.The bearing assembly is simple and can therefore be manufactured inexpensively. It is still compact and can therefore be easily and space-savingly installed. The bearing of the selector shaft is largely as far as possible independent of tolerance, since the selector shaft is both radial and is also axially supported by the same bearing body.

Anschläge für die Ein- und Aus-Position der Schaltkontakte sind nach einer Weiterbildung der Erfindung dadurch einfach realisierbar, daß ein zweiter Teilbereich des Lagerkörper die Koppelhebel axial überragt und Anschlagflächen für die Koppelhebel bildet.Stops for the on and off position of the switch contacts are therefore simple according to a development of the invention realizable that a second portion of the bearing body Coupling lever protrudes axially and stop surfaces for the coupling lever forms.

Wenn man den bei einer solchen Anordnung üblicherweise verwendeten Fanghaken in einer fensterartigen Ausnehmung des Lagerkörpers schwenkbar lagert und das Gegenstück als einen die Koppelhebel durchsetzenden Bolzen ausbildet, ist dieses zusätzliche Element platzsparend in die Lagerbaugruppe integriert.If you usually use that in such an arrangement Catch hook in a window-like recess in the bearing body swiveling and the counterpart as one Forming coupling lever through bolts, this is additional Space-saving element integrated in the bearing assembly.

Eine gemäß der Erfindung ausgebildete Anordnung zur Lagerung der Schaltwelle wird bei mehrpoligen Niederspannungs-Leistungsschaltern zweckmäßig in der Weise eingesetzt, daß jeweils eine Lagerbaugruppe an den beiden Enden der Schaltwelle den axial äußeren bewegbaren Schaltkontakten zugeordnet wird. Dadurch ist die Lagerung der Schaltwelle statisch bestimmt.An arrangement designed for storage according to the invention the switching shaft is used in multi-pole low-voltage circuit breakers appropriately used in such a way that a bearing assembly at both ends of the selector shaft is assigned to the axially outer movable switching contacts. As a result, the bearing of the selector shaft is determined statically.

Ein Ausführungsbeispiel der Erfindung ist in den Figuren 1-4 der Zeichnung dargestellt. An embodiment of the invention is in Figures 1-4 shown in the drawing.

Dabei zeigen
Figur 1 eine Lagerbaugruppe mit einem gemäß der Erfindung ausgebildeten Lagerkörper,
Figur 2 eine einstückig ausgebildete Schaltwelle mit zwei an ihren Enden angeordnenten Lagerbaugruppen gemäß Figur 1 in perspektivischer Ansicht,
Figuren 3 und 4 Schnittdarstellungen einer gemäß Figur 2 angeordneten LagerbaugruppeShow
FIG. 1 shows a bearing assembly with a bearing body designed according to the invention,
FIG. 2 shows a one-piece shift shaft with two bearing assemblies according to FIG. 1 arranged at its ends in a perspective view,
Figures 3 and 4 are sectional views of a bearing assembly arranged according to Figure 2

Gemäß Figur 1 weist eine Lagerbaugruppe 1 einen Lagerkörper 2 und eine Fangeinrichtung 3 auf. Der Lagerkörper 2 ist in mehrere Teilbereiche 4,5,6,7,71 und 72 gegliedert, die der Lagerung einer in Figur 2 dargestellten Schaltwelle 8, dem Anschlag von Koppelhebeln 9 und 10 beim Ein- und Auschaltvorgang, der Aufnahme der Fangeinrichtung 3 und der Befestigung der Lagerbaugruppe 1 an einer einer Gehäusevorderwand 25 der Schaltpole dienen.According to FIG. 1, a bearing assembly 1 has a bearing body 2 and a catching device 3. The bearing body 2 is in divided several sub-areas 4,5,6,7,71 and 72, which the Bearing of a control shaft 8 shown in Figure 2, the Stop of coupling levers 9 and 10 when switching on and off, the inclusion of the safety gear 3 and the attachment the bearing assembly 1 on a housing front wall 25 of the Switch poles serve.

Wie in Figur 2 gezeigt, ist die Schaltwelle 8 nahe ihren Enden durch zwei Lagerbaugruppen 1 gemäß Figur 1 gelagert. In jedem Endbereich der Schaltwelle 8 sind zwei Koppelhebel 9 und 10 angeordnet, die dem mechanischen Anschluß eines, einem äußeren Schaltpol zugehörigen, bewegbaren Schaltkontaktes 11 dienen und hierzu fest auf der Schaltwelle 8 angeordnet sind, und die gleichzeitig zur axialen Lagerung der Schaltwelle 8 verwendet werden. Jede Lagerbaugruppe 1 weist je einen ersten Teilbereich 4 auf, dessen axiale Breite dem Abstand der Koppelhebel 9 und 10 angepaßt ist. Dieser erste Teilbereich 4 des Lagerkörpers 2 ragt demnach mit geringem axialen Spiel zwischen die Koppelhebel 9 und 10 und umfaßt die Schaltwelle 8 halbschalenförmig in einer Richtung , die den beim Anschaltvorgang auftretenden Kräften entgegengesetzt ist. Damit bildet dieser erste Teilbereich 4 des Lagerkörpers 2 seitliche Führungsflächen 13 (vgl. Figur 1) für die mit der Schaltwelle 8 fest verbundenen Koppelhebel 9 und 10.As shown in Figure 2, the shift shaft 8 is near its ends stored by two bearing assemblies 1 according to Figure 1. In There are two coupling levers 9 at each end region of the selector shaft 8 and 10 arranged, the mechanical connection of one, one outer switching pole associated, movable switching contact 11th serve and are arranged firmly on the control shaft 8, and at the same time for the axial mounting of the control shaft 8 be used. Each bearing assembly 1 has a first one Subarea 4, the axial width of which is the distance between the coupling levers 9 and 10 is adjusted. This first section 4 of the bearing body 2 thus protrudes with little axial play between the coupling lever 9 and 10 and includes the shift shaft 8 half-shell-shaped in a direction that the when switching on occurring forces is opposite. In order to forms this first section 4 of the bearing body 2 lateral guide surfaces 13 (see FIG. 1) for those with the Shift shaft 8 fixed coupling lever 9 and 10.

Ein zweiter Teilbereich 5 überragt die Koppelhebel 9 und 10 axial und bildet Anschlagfläcben 14 (vgl. Figur 1) und 15 für die Koppelhebel 9 und 10 zur Begrenzung der Bewegung der Schaltwelle 8. Die Fangeinrichtung 3 jeder Lagerbaugruppe 1 weist einen Fanghaken 16 auf, der beim Ausschaltvorgang einen die beiden Koppelhebel 9 und 10 durchsetzenden Bolzen 17 (vgl. auch Figur 4) hintergreift. In einem dritten Teilbereich 6 des Lagerkörpers 2 ist in einer fensterartigen Ausnehmung 18 der Fanghaken 16 auf einen Lagerbolzen 19 angeordnet und gegen die Kraft einer Drahtbiegefeder 20 schwenkbar gelagert. Der Fanghaken 16 und die Drahtbiegefeder 20 können somit schon vor der Montage der Lagerbaugruppe 1 einfach und platzsparend in die Lagerbaugruppe integriert werden.A second section 5 projects above the coupling levers 9 and 10 axially and forms stop surfaces 14 (see FIG. 1) and 15 for the coupling lever 9 and 10 to limit the movement of the Switching shaft 8. The safety gear 3 of each bearing assembly 1 has a catch hook 16, which during the switch-off process the two coupling levers 9 and 10 passing through bolts 17 (see also FIG. 4). In a third area 6 of the bearing body 2 is in a window-like recess 18 of the catch hook 16 arranged on a bearing pin 19 and pivotable against the force of a wire spring 20 stored. The catch hook 16 and the wire bending spring 20 can thus be easy even before assembly of the bearing assembly 1 and can be integrated into the bearing assembly to save space.

Figur 3 zeigt einen Schnitt durch den ersten und dritten Teilbereich 4 und 6 des Lagerkörpers 2. Die fensterartige Ausnehmung 18 für den Fanghaken 16 weist einen schmalen oberen Bereich 21 (vgl. Figur 1) und einen breiteren unteren Bereich 22 (vgl. Figur 1) auf. Der schmale, obere Bereich 21 ist der Breite des Fanghakens 16 angepaßt und legt diesen bis auf ein geringes Spiel axial fest. Der breitere, untere Bereich 22 dient der zusätzlichen Aufnahme der Drahtbiegefeder 20. Die Koppelhebel 9 und 10 befinden sich hier in Ein-Position.Figure 3 shows a section through the first and third Section 4 and 6 of the bearing body 2. The window-like Recess 18 for the catch hook 16 has a narrow upper Area 21 (see FIG. 1) and a wider lower one Area 22 (see FIG. 1). The narrow, upper area 21 is adapted to the width of the catch hook 16 and sets this up axially tight for a slight play. The wider, lower one Area 22 serves to additionally accommodate the wire bending spring 20. The coupling levers 9 and 10 are here in the on position.

Die beiden Lagerbaugruppen 1 weisen in weiteren Teilbereichen 7,71 und 72 (vgl. auch Figur 1) Bohrungen 23 auf und sind durch Schraubverbindungen 24 kraft- und formschlüssig mit der Gehäusevorderwand 25 der Schaltpole verbunden. Diese kann eine in Figur 2 dargestellte halbschalenförmige Vertiefung 26 aufweisen, um die Einbaulage der Schaltwelle 8 vorzugeben und damit die Montage der Schaltwelle zu erleichtern.The two bearing assemblies 1 have further sub-areas 7, 71 and 72 (see also FIG. 1) bores 23 and by means of screw connections 24 with a positive and positive fit Housing front wall 25 of the switching poles connected. This can a half-shell-shaped depression 26 shown in FIG. 2 have to specify the installation position of the control shaft 8 and to facilitate the assembly of the selector shaft.

Je nach Länge der Schaltwelle können in bekannter Weise Hilfslagerkörper zur zusätzlichen Lagerung der Schaltwelle angeordnet sein. Man kann aber auch allen Schaltpolen eines mehrpoligen Niederspannungs-Leistungsschalters eine Lagerbaugruppe gemäß Figur 1 zuordnen.Depending on the length of the selector shaft you can in a known manner Auxiliary bearing body for additional storage of the selector shaft be arranged. But you can also all switching poles one multi-pole low-voltage circuit breaker a bearing assembly assign according to Figure 1.

Figur 4 zeigt einen Schnitt durch den zweiten Teilbereich 5 des Lagerkörpers 2, der sich axial außerhalb der Koppelhebel 9 und 10 erstreckt. Die Koppelhebel 9 und 10 befinden sich hier jedoch in Aus-Position. Zumindest einer der beiden Koppelhebel 9 und 10 ist so ausgebildet, daß beim Ausschaltvorgang ein Abschnitt 27 der umlaufenden Kante dieses Koppelhebels auf eine als Aus-Anschlag dienende erste Fläche 14 des Lagerkörpers 2 stößt.FIG. 4 shows a section through the second partial area 5 of the bearing body 2, which is axially outside the coupling lever 9 and 10 extends. The coupling levers 9 and 10 are located but here in the off position. At least one of the two coupling levers 9 and 10 is designed so that when switching off a portion 27 of the peripheral edge of this coupling lever on a first surface 14 of the Bearing body 2 bumps.

Zumindest einer der beiden Koppelhebel 9 und 10 kann einen hakennasenartigen Ausleger 28 aufweisen, der beim Einschaltvorgang auf eine als Ein-Anschlag dienende zweite Fläche 15 des Lagerkörpers stößt. Solch ein Ein-Anschlag wird beispielsweise in strombegrenzenden Niederspannungs-Leistungsschaltern benötigt.At least one of the two coupling levers 9 and 10 can be one have hook-nose-like arm 28, which during the switch-on process onto a second surface 15 serving as a one-stop of the bearing body bumps. Such a one-stop is for example in current-limiting low-voltage circuit breakers needed.

Claims (4)

  1. Bearing arrangement for the switching shaft (8) of a low-voltage circuit breaker,
    in which two coupling levers (9, 10) are arranged at a distance from one another on the integral switching shaft (8), for mechanical connection of a movable switching contact (11) which is associated with one switch pole, and in which a bearing assembly (1) which is connected to a housing front wall (25) of the switch pole and has a bearing body (2) is arranged in the region of the coupling levers (9, 10),
    characterized in that
    the bearing body (2) is mounted on the housing front wall (25) of the switch pole, surrounding the switching shaft (8) in the form of a half shell, and
    a first subregion (4) of the bearing body (2) is arranged between the coupling levers (9, 10) and forms side guide surfaces (13) for the coupling levers (9, 10) which are connected to the switching shaft (8).
  2. Arrangement according to Claim 1,
    characterized in that
    a second subregion (5) of the bearing body (2) projects axially beyond the coupling levers (9, 10) and forms stop surfaces (14, 15) for the coupling levers (9, 10).
  3. Arrangement according to Claim 1 or 2,
    characterized in that
    the bearing assembly (1) has a catch hook (16), whose mating piece forms a bolt (17) which passes through the coupling levers (9, 10), with the catch hook (16) being mounted in a window-like recess (18) in the bearing body (2) such that it can pivot.
  4. Multipole low-voltage circuit breaker having a bearing arrangement for the switching shaft (8), in which two coupling levers (9, 10) are in each case arranged on the switching shaft (8) for mechanical connection of each movable switching contact (11) which is associated with a switch pole, and one bearing assembly (1), having a bearing body (2) designed according to one of Claims 1 to 3, is associated with each of the two coupling levers (9, 10) of the two axially outer movable switching contacts (11).
EP00967594A 1999-09-30 2000-09-15 Device for arranging the actuating shaft of a low-voltage circuit-breaker and multipole low-voltage circuit breaker with a device for arranging the actuating shaft Expired - Lifetime EP1218900B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19948716 1999-09-30
DE19948716A DE19948716C1 (en) 1999-09-30 1999-09-30 Low-voltage (LV) power switch switching shaft mounting arrangement
PCT/DE2000/003261 WO2001024208A1 (en) 1999-09-30 2000-09-15 Device for arranging the actuating shaft of a low-voltage circuit-breaker and multipole low-voltage circuit breaker with a device for arranging the actuating shaft

Publications (2)

Publication Number Publication Date
EP1218900A1 EP1218900A1 (en) 2002-07-03
EP1218900B1 true EP1218900B1 (en) 2003-05-02

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Application Number Title Priority Date Filing Date
EP00967594A Expired - Lifetime EP1218900B1 (en) 1999-09-30 2000-09-15 Device for arranging the actuating shaft of a low-voltage circuit-breaker and multipole low-voltage circuit breaker with a device for arranging the actuating shaft

Country Status (6)

Country Link
US (1) US6771151B1 (en)
EP (1) EP1218900B1 (en)
CN (1) CN1162883C (en)
DE (2) DE19948716C1 (en)
HK (1) HK1047351B (en)
WO (1) WO2001024208A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20103230U1 (en) 2001-02-16 2002-06-20 Siemens Ag Low-voltage circuit breaker with a bearing arrangement for the switching shaft
DE10218938B4 (en) * 2002-04-19 2004-07-01 Siemens Ag Arrangement for mounting a switching shaft of an electrical switch and low-voltage circuit breaker with an arrangement for mounting the switching shaft
DE10261853B3 (en) * 2002-12-20 2004-04-22 Siemens Ag Multi-pole power switch for 3-phase load, has feedback torque exerted on switch shaft by one switch pole reduced relative to feedback torque exerted on switch shaft by further switch pole
DE20307992U1 (en) * 2003-05-16 2003-08-14 Siemens Ag End stop arrangement for switching shafts of low-voltage circuit breakers
DE10323094B3 (en) * 2003-05-16 2004-08-12 Siemens Ag Electrical power switch has switch shaft supported by bearings provided by one housing shell with fixings between housing shells provided by shaft bearing and second housing shell
CN1324625C (en) * 2004-01-14 2007-07-04 拉森特伯有限公司 Polar axis support system for circuit breaker
KR100689324B1 (en) * 2005-10-05 2007-03-08 엘에스산전 주식회사 Multi pole circuit breaker
JP4816241B2 (en) * 2006-05-16 2011-11-16 富士電機機器制御株式会社 Circuit breaker
US7569784B2 (en) * 2006-10-13 2009-08-04 Eaton Corporation Electrical switching apparatus, and housing and integral pole shaft bearing assembly therefor
CN101604600B (en) * 2009-06-05 2012-10-03 上海诺雅克电气有限公司 Multi-stage breaker with auxiliary supports

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4416090C1 (en) * 1994-04-20 1995-06-14 Siemens Ag Bearing arrangement for power switch actuator shaft
DE19739702C1 (en) * 1997-09-04 1998-12-10 Siemens Ag LV circuit breaker with switch-shaft

Also Published As

Publication number Publication date
CN1162883C (en) 2004-08-18
HK1047351B (en) 2005-01-07
DE19948716C1 (en) 2000-12-07
DE50002011D1 (en) 2003-06-05
HK1047351A1 (en) 2003-02-14
EP1218900A1 (en) 2002-07-03
CN1377505A (en) 2002-10-30
WO2001024208A1 (en) 2001-04-05
US6771151B1 (en) 2004-08-03

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