EP1137038A2 - Switching shaft unit for a switch - Google Patents

Switching shaft unit for a switch Download PDF

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Publication number
EP1137038A2
EP1137038A2 EP01106654A EP01106654A EP1137038A2 EP 1137038 A2 EP1137038 A2 EP 1137038A2 EP 01106654 A EP01106654 A EP 01106654A EP 01106654 A EP01106654 A EP 01106654A EP 1137038 A2 EP1137038 A2 EP 1137038A2
Authority
EP
European Patent Office
Prior art keywords
contact element
shaft unit
switching shaft
unit according
dead center
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01106654A
Other languages
German (de)
French (fr)
Other versions
EP1137038A3 (en
EP1137038B1 (en
Inventor
Rolf-Dieter Bauer
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.)
AEG Niederspannungstechnik GmbH and Co KG
Original Assignee
AEG Niederspannungstechnik GmbH and Co KG
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 AEG Niederspannungstechnik GmbH and Co KG filed Critical AEG Niederspannungstechnik GmbH and Co KG
Publication of EP1137038A2 publication Critical patent/EP1137038A2/en
Publication of EP1137038A3 publication Critical patent/EP1137038A3/en
Application granted granted Critical
Publication of EP1137038B1 publication Critical patent/EP1137038B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H01H73/045—Bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H01H1/205—Details concerning the elastic mounting of the rotating bridge in the rotor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H01H1/2058—Rotating bridge being assembled in a cassette, which can be placed as a complete unit into a circuit breaker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • H01H77/102—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement
    • H01H77/104—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement with a stable blow-off position

Definitions

  • the invention relates to a switching shaft unit for a switch.
  • a switching shaft unit which is in a in Fig. 5 switch 1 shown is installed.
  • This switch has 1 a movable contact 2, which is rotatable on the axis 3 a control shaft 4 is mounted and together with this forms a switching shaft unit.
  • the control shaft 4 is even stored in a pole track housing, not shown and has two diametrically opposed satellite axes 5 and 6, when the selector shaft 4 rotates about the axis 3 can also be rotated.
  • Axis 5 is the point of attack for a hinge mechanism 7 which is connected to a ratchet lever 8 connected is.
  • the pawl lever 8 is on a Switch housing 9 positioned axis 10 pivotable stored and is in the event of an overcurrent or short circuit of a key switch 11 released to the in Fig. 5th shown separate state of the contact 2 to enable.
  • the switch lock 11 is in turn through a release lever 13 pivotable about an axis of rotation 12 actuatable.
  • the object of the invention is to provide a switching shaft unit for to provide a switch, the one has improved functionality.
  • a switching shaft unit shown in Figures 1 and 2 has a contact element 2, which is mounted on an axis 3 and is S-shaped.
  • the contact element 2 is in one in the center of the body 4 of the shift shaft unit trained slot 15 added.
  • At the extent of Switch shaft body 4 are two diametrically opposed to each other arranged slots 17 formed in which there are two Pins 19 extending parallel to one another are included are.
  • the pins 19 are at their opposite ends each with a spring 18 against each other and thus against applied to the bottoms of the slots 17.
  • the spring is located itself on the outside of the drum-like Switch shaft body 4 and are therefore only in the illustration 2 can be seen.
  • the contact element 2 In the area of the apex of the S-shaped contact element 2 is one penetrating the contact element 2 Joint axis 21 provided on which a pair laterally on Contact element attached joint elements or tabs 23 are rotatably supported at their first end. On hers the second end, the tabs 23 have recesses 22 in which the pins 19 engage.
  • the pins 19 clamped to one another and the hinge axes 21 chosen so that the pins 19 due to a support the hinge elements 23 in the closed state of the Contact element 2 do not reach the bottoms of the slots 17 can and thereby a torque on the contact element 2 exercise. This torque keeps the contact element in the closed state.
  • Control contours running symmetrically to one another 25 trained in certain in the following to explanatory opening positions of the contact element 2 with the pins 19 can be brought into contact.
  • FIG. 1 The embodiment shown is the control contour 25 through two consecutive survey levels were formed. On these elevation levels are the corresponding ones in FIG. 1 imaginary position of the pin 19 to illustrate the im following described operation of the control contour drawn.
  • the shift shaft unit is installed in the housing of a circuit breaker shown in Fig. 5 assembled.
  • the body 4 is the Switching shaft essentially immobile, being in closed state of the contacts, as in FIGS. 1 shown to 3, the contact element 2 through each other tensioned pins 19 with the interposition of Joint elements 23 is pressed against the contact conductor 27.
  • the contact element 2 Under the normal conditions of switching on and off the circuit breaker, the contact element 2 by one rotated such an angle over that with the line A in Fig. 1 marked dead center does not go out.
  • First under short circuit conditions is the swing of the Contact element 2 sufficient to by the above mentioned spring 18 generated counteracting torque overcome and thus to cross the dead center line A.
  • control contour 25 shown in FIGS. 1 and 2 also causes the contact element 2 to be short from reaching the dead center line A with the first elevation 28 of the control contour 25 comes into contact with the pins 19 and thereby the function of the point of attack for that of the Pins 19 applied return torque.
  • the this suddenly creates longer levers on the Contact element 2 causes the spring force to remain the same a strongly increasing returning torque and thus an increased deceleration of a stronger one Clockwise overcurrent in FIG. 1 accelerated contact element 2.
  • the two-stage control contour 25 works with the second Step 29, on which the imaginary position of the pin 19 in Fig. 1 with the reference symbol C that the Contact element 2 when the acceleration is too great the dead center A is braked by the fact that the Pins 19 slightly when reaching the second stage be pushed apart.
  • This load on the pins 19th acts on the rising after the dead center is exceeded and counterclockwise torque so that the contact lever 2 braked and its possible Bounce back into the dead center Closed position of the contacts is avoided.
  • a switching shaft unit for a switch has one on an axis (3) rotatably mounted, S-shaped Contact element (2) of a substantially vertical to the axis (3) acting biasing element (19) and one of this operated, in the area of the apex of the Contact element attacking joint element (23) in Closing direction and when dead center is exceeded (A) can be acted upon in the opening direction.
  • the Contact element (2) points on its the biasing element facing side a control contour (25; 28, 29) on the with an opening rotation of the contact element (2) Reaching the dead center (A) with the biasing element (19) in Intervention can be brought.

Abstract

The unit has an S-shaped contact element rotatably mounted on an axle, operated in the closing direction by a bias element acting essentially perpendicularly to the axle and a joint element actuated by it and engaging near the apex of the contact element and in the opening direction when a dead point has been passed. The contact element has a control contour for engagement with the bias element during opening and before reaching the dead point. The unit has an S-shaped contact element (2) rotatably mounted on an axle (3), operated in the closing direction by a bias element (19) acting essentially perpendicularly to the axle and a joint element (23) actuated by it and engaging near the apex of the contact element and in the opening direction when a dead point (A) has been passed. The contact element has a control contour (25) on the side facing the bias element for engagement with the bias element during opening and before reaching the dead point.

Description

Die Erfindung bezieht sich auf eine Schaltwelleneinheit für einen Schalter.The invention relates to a switching shaft unit for a switch.

Aus der früheren Deutschen Patentanmeldung Nr. 19903911.9 ist eine Schaltwelleneinheit bekannt, die in einem in Fig. 5 gezeigten Schalter 1 eingebaut ist. Dieser Schalter 1 hat einen beweglichen Kontakt 2, der drehbar auf der Achse 3 einer Schaltwelle 4 gelagert ist und mit dieser zusammen eine Schaltwelleneinheit bildet. Die Schaltwelle 4 ist selbst in einem nicht dargestellten Polbahngehäuse gelagert und hat zwei diametral gegenüberliegende Satellit-Achsen 5 und 6, die bei einer Drehung der Schaltwelle 4 um die Achse 3 mitgedreht werden. Die Achse 5 ist der Angriffspunkt für einen Gelenkmechanismus 7, der mit einem Klinkenhebel 8 verbunden ist. Der Klinkenhebel 8 ist auf einer am Schaltergehäuse 9 positionierten Achse 10 schwenkbar gelagert und wird bei einem Überstrom bzw. Kurzschluß von einem Schaltschloß 11 freigegeben, um den in Fig. 5 gezeigten getrennten Zustand des Kontaktes 2 zu ermöglichen. Der Schaltschloß 11 ist seinerseits durch einen um eine Drehachse 12 schwenkbaren Auslösehebel 13 betätigbar.From the earlier German patent application No. 19903911.9 a switching shaft unit is known, which is in a in Fig. 5 switch 1 shown is installed. This switch has 1 a movable contact 2, which is rotatable on the axis 3 a control shaft 4 is mounted and together with this forms a switching shaft unit. The control shaft 4 is even stored in a pole track housing, not shown and has two diametrically opposed satellite axes 5 and 6, when the selector shaft 4 rotates about the axis 3 can also be rotated. Axis 5 is the point of attack for a hinge mechanism 7 which is connected to a ratchet lever 8 connected is. The pawl lever 8 is on a Switch housing 9 positioned axis 10 pivotable stored and is in the event of an overcurrent or short circuit of a key switch 11 released to the in Fig. 5th shown separate state of the contact 2 to enable. The switch lock 11 is in turn through a release lever 13 pivotable about an axis of rotation 12 actuatable.

Aufgabe der Erfindung ist es, eine Schaltwelleneinheit für einen Schalter zur Verfügung zu stellen, die eine verbesserte Funktionsweise aufweist.The object of the invention is to provide a switching shaft unit for to provide a switch, the one has improved functionality.

Diese Aufgabe wird durch eine Schaltwelleneinheit gemäß Patentanspruch 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen definiert. This task is performed by a switching shaft unit Claim 1 solved. Advantageous further developments of Invention are defined in the subclaims.

Die Erfindung wird im folgenden anhand eines Ausführungsbeispiels unter Bezugnahme auf Zeichnungen näher erläutert.
Es zeigen:

Fig. 1:
eine isolierte Schnittdarstellung einer Schaltwelleneinheit gemäß der Erfindung;
Fig. 2:
eine perspektivische Darstellung der in Fig. 1 gezeigten Schaltwelleneinheit;
Fig. 3:
eine vereinfachte Schnittdarstellung der in Fig. 1 gezeigten Schaitwelleneinheit im geschlossenen Zustand
des Kontakts;
Fig. 4:
eine vereinfachte Schnittdarstellung der in Fig. 1 gezeigten Schaltwelleneinheit im geöffneten Zustand des Kontakts; und
Fig. 5:
einen herkömmlichen Schalter mit einer darin eingebauten Schaltwelleneinheit.
The invention is explained below using an exemplary embodiment with reference to drawings.
Show it:
Fig. 1:
an isolated sectional view of a switching shaft unit according to the invention;
Fig. 2:
a perspective view of the switching shaft unit shown in Fig. 1;
Fig. 3:
a simplified sectional view of the Schaitwelleeinheit shown in Fig. 1 in the closed state
of contact;
Fig. 4:
a simplified sectional view of the switching shaft unit shown in Figure 1 in the open state of the contact. and
Fig. 5:
a conventional switch with a switching shaft unit built therein.

Eine in den Figuren 1 und 2 gezeigte Schaltwelleneinheit hat ein Kontaktelement 2, das auf einer Achse 3 gelagert und S-förmig ausgebildet ist. Das Kontaktelement 2 ist in einem im Körper 4 der Schaltwelleneinheit mittig ausgebildeten Schlitz 15 aufgenommen. Am Umfang des Schaltwellenkörpers 4 sind zwei diametral zueinander angeordnete Schlitze 17 ausgebildet, in denen sich zwei parallel zueinander erstreckende Stifte 19 aufgenommen sind. An ihren gegenüberliegenden Enden sind die Stifte 19 mit jeweils einer Feder 18 gegeneinander und somit gegen die Böden der Schlitze 17 beaufschlagt. Die Feder befinden sich auf der Außenseite des trommelartigen Schaltwellenkörpers 4 und sind daher nur in der Darstellung der Fig. 2 zu erkennen.A switching shaft unit shown in Figures 1 and 2 has a contact element 2, which is mounted on an axis 3 and is S-shaped. The contact element 2 is in one in the center of the body 4 of the shift shaft unit trained slot 15 added. At the extent of Switch shaft body 4 are two diametrically opposed to each other arranged slots 17 formed in which there are two Pins 19 extending parallel to one another are included are. The pins 19 are at their opposite ends each with a spring 18 against each other and thus against applied to the bottoms of the slots 17. The spring is located itself on the outside of the drum-like Switch shaft body 4 and are therefore only in the illustration 2 can be seen.

Im Bereich der Scheitel des S-förmigen Kontaktelements 2 ist jeweils eine das Kontaktelement 2 durchsetzende Gelenkachse 21 vorgesehen, auf der ein Paar seitlich am Kontaktelement angebrachte Gelenkelemente bzw. Laschen 23 mit ihrem ersten Ende drehbar gelagert sind. An ihrem zweiten Ende weisen die Laschen 23 Ausnehmungen 22 auf, in denen die Stifte 19 eingreifen. Dabei sind die Positionen der zueinander gespannten Stifte 19 und der Gelenkachsen 21 so gewählt, dass die Stifte 19 wegen einer Abstützung auf den Gelenkelementen 23 im geschlossenen Zustand des Kontaktelements 2 die Böden der Schlitze 17 nicht erreichen können und dadurch ein Drehmoment auf das Kontaktelement 2 ausüben. Dieses Drehmoment hält das Kontaktelement im geschlossenen Zustand.In the area of the apex of the S-shaped contact element 2 is one penetrating the contact element 2 Joint axis 21 provided on which a pair laterally on Contact element attached joint elements or tabs 23 are rotatably supported at their first end. On hers the second end, the tabs 23 have recesses 22 in which the pins 19 engage. Here are the positions the pins 19 clamped to one another and the hinge axes 21 chosen so that the pins 19 due to a support the hinge elements 23 in the closed state of the Contact element 2 do not reach the bottoms of the slots 17 can and thereby a torque on the contact element 2 exercise. This torque keeps the contact element in the closed state.

Im Bereich der Scheitel des Kontaktelements 2 sind symmetrisch zueinander identisch verlaufende Steuerkonturen 25 ausgebildet, die in bestimmten im folgenden noch zu erläuternden Öffnungspositionen des Kontaktelements 2 mit den Stiften 19 in Anlage bringbar sind. Bei dem in Fig. 1 gezeigten Ausführungsbeispiel ist die Steuerkontur 25 durch zwei aufeinanderfolgende Erhebungsstufen gebildet. Auf diesen Erhebungsstufen ist in Fig. 1 die entsprechende imaginäre Position des Stiftes 19 zur Verdeutlichung der im folgenden beschriebene Funktionsweise der Steuerkontur eingezeichnet.In the area of the apex of the contact element 2 Control contours running symmetrically to one another 25 trained in certain in the following to explanatory opening positions of the contact element 2 with the pins 19 can be brought into contact. In the case of FIG. 1 The embodiment shown is the control contour 25 through two consecutive survey levels were formed. On these elevation levels are the corresponding ones in FIG. 1 imaginary position of the pin 19 to illustrate the im following described operation of the control contour drawn.

Zur Aufnahme ihrer Funktion wird die Schaltwelleneinheit in das in Fig. 5 gezeigte Gehäuse eines Leistungsschalters montiert. In diesem Zustand ist der Körper 4 der Schaltwelle im wesentlichen unbeweglich, wobei im geschlossenen Zustand der Kontakte, wie in den Figuren 1 bis 3 gezeigt, das Kontaktelement 2 durch die zueinander gespannten Stifte 19 unter Zwischenschaltung der Gelenkelemente 23 gegen die Kontaktleiter 27 gedrückt wird. Unter den normalen Bedingungen des Ein- und Ausschaltens des Leistungsschalters wird das Kontaktelement 2 um einen solchen Winkel gedreht, der über den mit der Linie A in Fig. 1 gekennzeichneten Totpunkt nicht hinausgeht. Erst unter Kurzschlussbedingungen ist der Schwung des Kontaktelements 2 ausreichend, um das durch die oben genannten Feder 18 erzeugte entgegenwirkende Drehmoment zu überwinden und somit die Totpunktlinie A zu überschreiten. Nach dem Überschreiten der Totpunktlinie A ist eine Rückführung des Kontaktelements 2 in den geschlossenen Kontaktzustand nicht mehr möglich, weil das durch die Feder 18 verursachte Drehmoment nunmehr in die entgegengesetzte Richtung, d.h. in Öffnungsrichtung wirkt. Demzufolge verbleibt das Kontaktelement in der in Fig. 4 gezeigten offenen Stellung.The shift shaft unit is installed in the housing of a circuit breaker shown in Fig. 5 assembled. In this state, the body 4 is the Switching shaft essentially immobile, being in closed state of the contacts, as in FIGS. 1 shown to 3, the contact element 2 through each other tensioned pins 19 with the interposition of Joint elements 23 is pressed against the contact conductor 27. Under the normal conditions of switching on and off the circuit breaker, the contact element 2 by one rotated such an angle over that with the line A in Fig. 1 marked dead center does not go out. First under short circuit conditions is the swing of the Contact element 2 sufficient to by the above mentioned spring 18 generated counteracting torque overcome and thus to cross the dead center line A. After passing the dead center line A is one Return of the contact element 2 in the closed Contact status is no longer possible because of the spring 18 caused torque now in the opposite Direction, i.e. acts in the opening direction. As a result the contact element remains in that shown in FIG. 4 open position.

Mit der in Fig. 1 und 2 gezeigten Steuerkontur 25 wird außerdem bewirkt, dass das Kontaktelement 2 bereits kurz vom Erreichen der Totpunktlinie A mit der ersten Erhebung 28 der Steuerkontur 25 in Anlage mit den Stiften 19 gelangt und dadurch die Funktion des Angriffspunkts für das von den Stiften 19 ausgeübte rückführende Drehmoment übernimmt. Der dadurch plötzlich entstehende längere Hebel am Kontaktelement 2 bewirkt bei gleichbleibender Federkraft ein stark ansteigendes rückführendes Drehmoment und somit eine verstärkte Abbremsung des bei einem stärkeren Überstrom in Richtung des Uhrzeigersinns in Fig. 1 beschleunigten Kontaktelements 2.With the control contour 25 shown in FIGS. 1 and 2 also causes the contact element 2 to be short from reaching the dead center line A with the first elevation 28 of the control contour 25 comes into contact with the pins 19 and thereby the function of the point of attack for that of the Pins 19 applied return torque. The this suddenly creates longer levers on the Contact element 2 causes the spring force to remain the same a strongly increasing returning torque and thus an increased deceleration of a stronger one Clockwise overcurrent in FIG. 1 accelerated contact element 2.

Die zweistufige Steuerkontur 25 bewirkt mit der zweiten Stufe 29, auf der die imaginäre Lage des Stiftes 19 in Fig. 1 mit dem Bezugszeichen C gekennzeichnet ist, dass das Kontaktelement 2 bei einer zu großen Beschleunigung über den Totpunkt A hinaus dadurch abgebremst wird, dass die Stifte 19 beim Erreichen der zweiten Stufe geringfügig auseinandergedrückt werden. Diese Belastung der Stifte 19 wirkt dem nach Überschreitung des Totpunkts ansteigenden und im Uhrzeigersinn wirkenden Drehmoment entgegen, so dass das Kontakthebel 2 abgebremst und sein mögliches Zurückprallen über den Totpunkt hinaus zurück in die Schließstellung der Kontakte vermieden wird.The two-stage control contour 25 works with the second Step 29, on which the imaginary position of the pin 19 in Fig. 1 with the reference symbol C that the Contact element 2 when the acceleration is too great the dead center A is braked by the fact that the Pins 19 slightly when reaching the second stage be pushed apart. This load on the pins 19th acts on the rising after the dead center is exceeded and counterclockwise torque so that the contact lever 2 braked and its possible Bounce back into the dead center Closed position of the contacts is avoided.

Auf der Grundlage des oben beschriebenen Ausführungsbeispiels sind verschiedene Abwandlungen der erfindungsgemäßen Schaltwelleneinheit möglich. So zum Beispiel kann die aus den Stiften 19, den Federn 18 und den Gelenkelementen 23 bestehende Vorspannvorrichtung nur an dem einen Scheitel des S-förmigen Kontaktelements ausgebildet werden, in dem das andere Ende der jeweiligen am Stift 19 eingreifenden Feder 18 am Schaltwellenkörper 4 fest positioniert wird. Zur Vereinfachung der Fertigung des Kontaktelements kann zum Beispiel auf die zweite Stufe der Steuerkontur 25 verzichtet werden, falls die Belastungscharakteristika des betreffenden Leistungsschalters, in dem die Schaltwelleneinheit einzubauen ist, dies erlauben.Based on the above Embodiment are various modifications of the switching shaft unit according to the invention possible. So for Example can be that of the pins 19, the springs 18 and the Articulated elements 23 existing pretensioner only one vertex of the S-shaped contact element be trained in the other end of each spring 18 engaging pin 19 on selector shaft body 4 is firmly positioned. To simplify the manufacture of the Contact element can, for example, to the second stage of the Control contour 25 are dispensed with if the Load characteristics of the concerned Circuit breaker in which the switching shaft unit is to be installed, allow this.

Eine Schaltwelleneinheit für einen Schalter hat ein auf einer Achse (3) drehbar gelagertes, S-förmig ausgebildetes Kontaktelement (2), das von einem im wesentlichen senkrecht zur Achse (3) wirkenden Vorspannelement (19) und ein von diesem betätigtes, im Bereich der Scheitel des Kontaktelements angreifendes Gelenkelement (23) in Schließrichtung und beim Überschreiten eines Totpunkts (A) in die Öffnungsrichtung beaufschlagbar ist. Das Kontaktelement (2) weist auf seiner dem Vorspannelement zugewandten Seite eine Steuerkontur (25; 28, 29) auf, die bei einer öffnenden Drehung des Kontaktelements (2) vor Erreichen des Totpunkts (A) mit dem Vorspannelement (19) in Eingriff bringbar ist.A switching shaft unit for a switch has one on an axis (3) rotatably mounted, S-shaped Contact element (2) of a substantially vertical to the axis (3) acting biasing element (19) and one of this operated, in the area of the apex of the Contact element attacking joint element (23) in Closing direction and when dead center is exceeded (A) can be acted upon in the opening direction. The Contact element (2) points on its the biasing element facing side a control contour (25; 28, 29) on the with an opening rotation of the contact element (2) Reaching the dead center (A) with the biasing element (19) in Intervention can be brought.

Claims (8)

Schaltwelleneinheit für einen Schalter mit einem auf einer Achse (3) drehbar gelagerten, S-förmig ausgebildeten Kontaktelement (2), das von einem im wesentlichen senkrecht zur Achse (3) wirkenden Vorspannelement (19) und ein von diesem betätigtes, im Bereich der Scheitel des Kontaktelements angreifendes Gelenkelement (23) in Schließrichtung und beim Überschreiten eines Totpunkts (A) in die Öffnungsrichtung beaufschlagbar ist, dadurch gekennzeichnet, daß das Kontaktelement (2) auf seiner dem Vorspannelement zugewandten Seite eine Steuerkontur (25; 28, 29) aufweist, die bei einer öffnenden Drehung des Kontaktelements (2) vor Erreichen des Totpunkts (A) mit dem Vorspannelement (19) in Eingriff bringbar ist.Switching shaft unit for a switch with an S-shaped contact element (2) which is rotatably mounted on an axis (3) and which has a biasing element (19) which acts essentially perpendicular to the axis (3) and which is actuated by the latter in the region of the apex of the contact element engaging joint element (23) in the closing direction and when a dead center (A) is exceeded in the opening direction, characterized in that the contact element (2) on its side facing the biasing element has a control contour (25; 28, 29) which upon opening rotation of the contact element (2) before reaching dead center (A), it can be brought into engagement with the biasing element (19). Schaltwelleneinheit nach Anspruch 1, dadurch gekennzeichnet, daß die Steuerkontur (25) eine Anhebungsstufe (28) aufweist, die eine Erhöhung des vom Vorspannelement (19) auf das Kontaktelement ausgeübten Drehmoments bewirkt.Switching shaft unit according to claim 1, characterized in that the control contour (25) has a raising stage (28) which brings about an increase in the torque exerted by the prestressing element (19) on the contact element. Schaltwelleneinheit nach Anspruch 2, dadurch gekennzeichnet, daß die Anhebungsstufe (28) so angeordnet ist, daß sie unmittelbar vor Erreichung des Totpunkts (A) durch das Kontaktelement (2) mit dem Vorspannelement (19) in Eingriff bringbar ist.Switching shaft unit according to claim 2, characterized in that the lifting stage (28) is arranged in such a way that it can be brought into engagement with the pretensioning element (19) immediately before the dead center (A) is reached by the contact element (2). Schaltwelleneinheit nach Anspruch 1, dadurch gekennzeichnet, daß die Steuerkontur (25) eine weitere zweite Anhebungsstufe (29) aufweist, die sich an die erste Anhebungsstufe (28) anschließt. Switching shaft unit according to Claim 1, characterized in that the control contour (25) has a further second raising stage (29) which adjoins the first raising stage (28). Schaltwelleneinheit nach Anspruch 4, dadurch gekennzeichnet, daß die zweite Anhebungsstufe (29) so angeordnet ist, daß sie erst nach Erreichung des Totpunkts (A) durch das Kontaktelement (2) mit dem Vorspannelement (19) in Eingriff bringbar ist.Switching shaft unit according to claim 4, characterized in that the second lifting stage (29) is arranged such that it can only be brought into engagement with the biasing element (19) after the dead center (A) has been reached by the contact element (2). Schaltwelleneinheit nach einem der Ansprüche 1 bis 5, gekennzeichnet durch zwei als Stifte (19) ausgebildete Vorspannelemente, die durch zwei an ihren Enden angreifenden Feder (18) gegeneinander gespannt sind und auf der Seite eines jeden Scheitels des Kontaktelements (2) in die mit Ausnehmungen (22) versehenen Enden jeweils eines Paars von Gelenkelementen (23) eingreifen, die mit ihren anderen Enden auf beiden Seiten des Kontaktelements (2) drehbar gelagert sind.Switching shaft unit according to one of claims 1 to 5, characterized by two biasing elements designed as pins (19) which are tensioned against one another by two springs (18) acting at their ends and on the side of each apex of the contact element (2) into the recesses (22) provided ends of a pair of joint elements (23) which are rotatably mounted with their other ends on both sides of the contact element (2). Schaltwelleneinheit nach Anspruch 6, dadurch gekennzeichnet, daß die Steuerkontur (25) nach jeder Anhebungsstufe (28, 29) Plateauabschnitte aufweist, die kein weiteres Auseinanderdrücken der Stifte (19) bewirken.Switching shaft unit according to claim 6, characterized in that the control contour (25) after each raising stage (28, 29) has plateau sections which do not cause the pins (19) to be pushed apart further. Schaltwelleneinheit nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß die Gelenkelemente (23) eines Paares auf einer das Kontaktelement (2) durchsetzenden Achse (21) gelagert sind.Switching shaft unit according to claim 4 or 5, characterized in that the joint elements (23) of a pair are mounted on an axis (21) passing through the contact element (2).
EP01106654A 2000-03-17 2001-03-16 Switching shaft unit for a switch Expired - Lifetime EP1137038B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10013160A DE10013160B4 (en) 2000-03-17 2000-03-17 Switch shaft unit for a switch
DE10013160 2000-03-17

Publications (3)

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EP1137038A2 true EP1137038A2 (en) 2001-09-26
EP1137038A3 EP1137038A3 (en) 2003-03-19
EP1137038B1 EP1137038B1 (en) 2007-05-16

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Family Applications (1)

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EP01106654A Expired - Lifetime EP1137038B1 (en) 2000-03-17 2001-03-16 Switching shaft unit for a switch

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EP (1) EP1137038B1 (en)
AT (1) ATE362645T1 (en)
DE (2) DE10013160B4 (en)
ES (1) ES2286051T3 (en)

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WO2003041106A1 (en) * 2001-11-06 2003-05-15 Abb Service S.R.L. Low-voltage circuit breaker
EP1772885A1 (en) * 2005-10-05 2007-04-11 Moeller GmbH Contact system for a low voltage switch
US8071898B2 (en) 2007-08-21 2011-12-06 Siemens Aktiengesellschaft Switching device with a switching shaft for mounting a rotary contact link and multipole switching device arrangement
GB2576338A (en) * 2018-08-15 2020-02-19 Eaton Intelligent Power Ltd Switching device and method for operating a switching device

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DE102006012125B3 (en) * 2006-03-09 2007-11-15 Siemens Ag Electrical switchgear, has coupling unit and multi-coupling rod, where mechanical connections between unit and rod enable movement of unit independent of movement of rod, and drive strand for operating movable contact
DE102008007363A1 (en) 2008-01-30 2009-08-06 Siemens Aktiengesellschaft Rotary contact system for a switching device and switching devices with such a rotary contact system
DE102008007364A1 (en) 2008-01-30 2009-08-27 Siemens Aktiengesellschaft Rotary contact system for circuit-breaker, has metal strip comprising curved contact end bent to loop such that end piece is plunged into recess, which lies opposite to movable switching contact
DE102008007365A1 (en) 2008-01-30 2009-08-06 Siemens Aktiengesellschaft Three-pole switching device i.e. molded case circuit breaker power switching device, has contact spring elements tiltably mounted for purpose of three-point mounting in support point in selector shaft segment and connected with contact arms
DE102008037967A1 (en) 2008-08-13 2010-02-18 Siemens Aktiengesellschaft Rotary contact system for power switching device, has spring gripping molded inner contour of recess in spring loaded condition such that arms are provided with slack point characteristic during rotational motion relative to shaft segments
DE102011081102A1 (en) * 2011-08-17 2013-02-21 Siemens Aktiengesellschaft Electric switch

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US6310307B1 (en) * 1999-12-17 2001-10-30 General Electric Company Circuit breaker rotary contact arm arrangement

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US5310971A (en) * 1992-03-13 1994-05-10 Merlin Gerin Molded case circuit breaker with contact bridge slowed down at the end of repulsion travel
EP0889498A2 (en) * 1997-07-02 1999-01-07 AEG Niederspannungstechnik GmbH & Co. KG Rotary contact assembly for high ampere-rated circuit breakers
WO1999062092A1 (en) * 1998-05-29 1999-12-02 General Electric Company Rotary contact assembly for high ampere-rated circuit breakers
WO2001006530A1 (en) * 1999-07-20 2001-01-25 Aeg Niederspannungstechnik Gmbh & Co. Kg Displaceable contact having low electrical resistance
US6310307B1 (en) * 1999-12-17 2001-10-30 General Electric Company Circuit breaker rotary contact arm arrangement

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003041106A1 (en) * 2001-11-06 2003-05-15 Abb Service S.R.L. Low-voltage circuit breaker
US6924445B2 (en) 2001-11-06 2005-08-02 Abb Service S.R.L. Low-voltage circuit breaker
EP1772885A1 (en) * 2005-10-05 2007-04-11 Moeller GmbH Contact system for a low voltage switch
US8071898B2 (en) 2007-08-21 2011-12-06 Siemens Aktiengesellschaft Switching device with a switching shaft for mounting a rotary contact link and multipole switching device arrangement
GB2576338A (en) * 2018-08-15 2020-02-19 Eaton Intelligent Power Ltd Switching device and method for operating a switching device

Also Published As

Publication number Publication date
EP1137038A3 (en) 2003-03-19
ATE362645T1 (en) 2007-06-15
DE10013160B4 (en) 2006-07-06
EP1137038B1 (en) 2007-05-16
DE50112498D1 (en) 2007-06-28
DE10013160A1 (en) 2001-10-04
ES2286051T3 (en) 2007-12-01

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