EP0003352B1 - Driving mechanism for switches - Google Patents

Driving mechanism for switches Download PDF

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Publication number
EP0003352B1
EP0003352B1 EP19790100204 EP79100204A EP0003352B1 EP 0003352 B1 EP0003352 B1 EP 0003352B1 EP 19790100204 EP19790100204 EP 19790100204 EP 79100204 A EP79100204 A EP 79100204A EP 0003352 B1 EP0003352 B1 EP 0003352B1
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EP
European Patent Office
Prior art keywords
lever
locking
rocking
levers
driving
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
EP19790100204
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German (de)
French (fr)
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EP0003352A1 (en
Inventor
Max Höckele
Werner Müller
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.)
Karl Pfisterer Elektrorechnische Spezialartikel GmbH and Co KG
Original Assignee
Karl Pfisterer Elektrorechnische Spezialartikel GmbH and Co KG
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Publication of EP0003352A1 publication Critical patent/EP0003352A1/en
Application granted granted Critical
Publication of EP0003352B1 publication Critical patent/EP0003352B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/40—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor

Definitions

  • the invention relates to a drive member and an output member having a switch drive device with two pivot levers, the pivot axes of which lie in one plane and extend parallel and which are coupled to one another at a distance from their pivot axis by at least one tensionable spring, and to a locking device, the two arranged in the plane of the pivot lever, also pivotable locking lever which alternately lock the energy of the tensioned spring to the switch pivot lever until the other pivot lever has reached a release position relative to the first-mentioned pivot lever when pivoting the spring.
  • the two pivot levers are mounted on a shaft which forms the drive element and are coupled to this shaft via a gearbox with a dead gear.
  • the dead gear of the gearbox is required here, because when the shaft rotates in one direction only one and the other of the two pivot levers may be taken along in the other direction.
  • the two springs are each designed as a helical compression spring and are each arranged on a clamping bolt, which are articulated in the region of one end of one or the other swivel lever.
  • the clamping bolts are each provided with an elongated hole, which connects the clamping bolt with the other pivoting lever and as an attachment for the helical compression spring serving bolt reaches through.
  • a shift shaft arranged coaxially with the drive shaft is provided, on which, in addition to the two pivot levers, a double-armed lever is arranged, which can be driven by drivers of one of the two pivot levers in one direction of rotation and the other in the other direction of rotation.
  • the invention has for its object to provide a switch drive device that takes up as little space as possible and in particular enables a narrow design.
  • this object is achieved according to the invention in that one pivot lever forms the drive member and the other pivot lever forms the output member and that the locking levers protrude into the pivoting path of the drive member and are moved by the latter out of their locked position into the release position.
  • Such a switch drive device has a minimal number of structurally simple individual parts and therefore not only has a simple and robust structure, but also requires little space.
  • the drive device according to the invention allows a narrow design, which contributes to the fact that only two pivot levers have to be arranged side by side.
  • the switch drive device can be used for both circuit breakers and circuit breakers, and due to its small space requirement, it is also suitable for driving switches with an insulating gas filling, which due to the high insulating ability of the insulating gas, which can be SF 6 gas, for example , have relatively small dimensions.
  • an insulating gas filling which due to the high insulating ability of the insulating gas, which can be SF 6 gas, for example , have relatively small dimensions.
  • a plurality of drive devices can be arranged close to one another, as may be necessary if, for example, a plurality of switching units are arranged close to one another in the housing of a switch filled with insulating gas.
  • the two pivot levers preferably have a common pivot axis in order to further reduce the outlay and the space requirement.
  • the one pivot lever is formed at least in the section lying next to the other pivot lever by two spaced-apart arms between which the other pivot lever lies, because this enables the power transmission between the pivot levers and the tensionable springs to be carried out in an operationally reliable manner with the least possible design effort.
  • the tensionable springs are designed as compression springs, since this simplifies the adaptation of the spring characteristics to the requirements.
  • Such an adaptation and change of the spring characteristic is particularly simple when the compression springs are designed as plate spring assemblies, because plate springs of different characteristics can then be combined. For example, you can achieve a very high initial force to achieve a high acceleration at the beginning of the switching process by means of a corresponding spring characteristic.
  • Another advantage of compression springs is that the design effort for the power transmission and thus the space requirement can be kept very low. This applies in particular when the drive device is designed according to claim 5.
  • an embodiment of the drive device according to the invention is advantageous.
  • a switch 1 which in the exemplary embodiment is an SF 6 -insulated medium voltage switch, is assigned three switch drive devices 2 of the same design, since the housing of the switch contains three three-phase switches, which are each composed of three single-phase switching units 3. As particularly shown in FIG. 1, the switch drive devices 2 are mounted next to one another on the cover of the switch housing.
  • a rectangular base plate 4 carries two side plates 5 which are perpendicular to it and are arranged in parallel and at a distance from one another with an essentially rectangular configuration.
  • the two ends of a pivot axis 6 lying parallel to the base plate 4 are fixed, on which a drive lever designated as a whole as 7 and a drive lever designated as a whole as 8 are pivotably mounted.
  • the output lever 8, as shown in FIG. 5, is formed by two upright flat rails 8 'which are parallel to one another and are at a distance from one another which is caused by two eyebolts 9, the eye-shaped head of which lies between the two flat rails 8' and can be pivoted is mounted on a pin 10 each.
  • the two pins 10, which engage in holes in the flat rails 8 ', are, as shown in FIG. 3, arranged approximately diametrically with respect to the pivot axis 6 at the same distance from it.
  • the two eyebolts 9 are each screwed to one end of a sleeve 11 provided with an internal thread, at the other end of which a spring plate 13 is fastened by means of a screw 12.
  • a spring plate 13 is fastened by means of a screw 12.
  • At this spring plate lies one end of a plate spring assembly 14 or 14 'carried by the sleeve 11, the other end of which rests on the flat surface of a longitudinally displaceable pressure piece 15 which is located on the sleeve 11 and which faces the drive lever 7 and the output lever 8 Side has a cylindrical lateral surface, as shown in FIGS. 3 and 4.
  • the pressure pieces 15 rest in the two end positions of the levers 7 and 8 and during the tensioning process of the associated plate spring assembly on the two flat rails 7 'of the drive lever 7, which have a groove-like recess where the pressure pieces 15 rest have a concave-cylindrical profile, the radius of curvature of which is adapted to that of the convex-cylindrical surface of the pressure pieces 15.
  • these recesses are offset somewhat further compared to the associated pin 10 to the adjacent free lever end.
  • a first locking lever 16 is provided, which is pivotably mounted on a bolt 17 above the end section of the output lever 8 which is extended beyond the pivot axis 6 and has an axis parallel to the pivot axis.
  • the ends of this bolt lie in holes in the side plates 5.
  • the end of the first locking lever 16 facing the drive lever 7, as shown in FIG. 1, is designed as a fork in which a roller 19 projecting beyond the fork ends is rotatable on a pin lying parallel to the pivot axis 6 20 is stored.
  • the length of the pin 20 and the dimension of the fork-shaped end in the longitudinal direction of this pin are smaller than the distance between the flat rails 7 'of the drive lever 7.
  • the roller 19 rests on the top of the two flat rails 8' of the output lever 8.
  • the longitudinal axis defined by the pivot axis of the first locking lever 16 and the longitudinal axis of its roller 19 encloses an angle with the longitudinal axis of the drive lever 8 which is somewhat less than 90 °. So that the locking lever does not pivot counterclockwise under the force exerted on it by the output lever when looking in accordance with FIG. 3, a stop pin 21 mounted in the side plates 5 is provided, on which the end portion of the locking lever 16 facing away from the roller 19 stops.
  • An identically designed, second locking lever 23 is pivotally mounted on a bolt 24 which is arranged such that in the second end position of the output lever 8, in which it is pivoted downward into a position which is the position of the drive lever shown in FIG. 3 corresponds, the longitudinal axis of the output lever 8 with that of the second locking lever 23 encloses an angle which is slightly less than 90 °. In this position, the second locking lever 23 bears against a stop pin 21 ', which prevents the mentioned angle from being reduced.
  • the output lever 8 is first held in the end position shown in FIG. 3 by the first locking lever 16.
  • the pivoting movement of the drive lever 7 counterclockwise therefore causes an increase in the distance between the pressure piece 15 of the plate spring assembly 14 shown on the left in FIG. 3 and the pin 10, which is equivalent to a displacement of the pressure piece 15 on the sleeve 11 against the spring plate 13 , whereby the plate spring assembly 14 is tensioned.
  • the sleeve 11 pivots counterclockwise around the pin 10.
  • the sleeve 11 of the spring assembly 14 ' will therefore initially maintain its position.
  • the position of the second locking lever 23 remains unchanged during the tensioning process, since its role rests on the output lever 8.
  • the top of the flat rails 7 'of the drive lever 7 approaches the driving pin 22 of the first locking lever 16.
  • a groove-shaped recess 25 with a concave-cylindrical profile in the two flat rails 7 opposite the recesses for the contact of the pressure pieces 15 is used in a further pivoting of the drive lever 7 counterclockwise exerted a force on the driver pin 22 which pivots it beyond the pivot position in which its longitudinal axis is perpendicular to the longitudinal axis of the output lever 8.
  • the first locking lever 16 assumes a position that corresponds to that of the second locking lever 23 in FIG. 3.
  • the latter is pivoted clockwise under the action of a return spring 26 into the position corresponding to the position of the first locking lever 16 shown in FIG. 3 and while it is resting on its stop pin while the output lever 8 is moving into its other end position.
  • the first locking lever 16 also has a corresponding return spring 26.
  • the springs 26 are fastened on the one hand to the upper end of the associated locking lever and on the other hand to two pins 27 which connect the two side plates 5 to one another.
  • the drive lever 7 now at the top must be pivoted down again into the position shown in FIG. 3.
  • the output lever 8 is blocked by the second locking lever 23, so that the two flat rails 7 'move the pressure piece 15 of the plate spring assembly 14' shown in FIG. 3 on the right against the free end of its sleeve 11 and thereby tension this plate spring assembly 14 '.
  • the two flat rails 7 ' each with a groove-shaped recess 25', come into contact with the driver pin 22 of the second locking lever 23.
  • This is pivoted counterclockwise and releases the output lever 8 after the dead center position has been exceeded.
  • the spring 26 pivots the first locking lever 16 back into the locking position.

Description

Die Erfindung bezieht sich auf eine ein Antriebsglied und ein Abtriebsglied aufweisende Schalterantriebsvorrichtung mit zwei Schwenkhebeln, deren Schwenkachsen in einer Ebene liegen sowie parallel verlaufen und die im Abstand von ihrer Schwenkachse durch wenigstens je eine spannbare Feder miteinander gekuppelt sind, und mit einer Sperrvorrichtung, die zwei in der Ebene der Schwenkhebel angeordnete, ebenfalls schwenkbare Sperrhebel aufweist, die im Wechsel den die Energie der gespannten Feder auf den Schalter übertragenden Schwenkhebel verriegeln, bis der andere Schwenkhebel bei seiner zum Spannen der Feder erforderlichen Verschwenkung relativ zum erstgenannten Schwenkhebel eine Auslöselage erreicht hat.The invention relates to a drive member and an output member having a switch drive device with two pivot levers, the pivot axes of which lie in one plane and extend parallel and which are coupled to one another at a distance from their pivot axis by at least one tensionable spring, and to a locking device, the two arranged in the plane of the pivot lever, also pivotable locking lever which alternately lock the energy of the tensioned spring to the switch pivot lever until the other pivot lever has reached a release position relative to the first-mentioned pivot lever when pivoting the spring.

Bei einer bekannten Schalterantriebsvorrichtung dieser Art (AT-B-277 368) sind die beiden Schwenkhebel auf einer das Antriebsglied bildenden Welle gelagert und mit dieser Welle über ein Getriebe mit totem Gang gekuppelt. Der tote Gang des Getriebes ist hierbei erforderlich, da bei einer Drehbewegung der Welle in der einen Richtung nur der eine und in der anderen Richtung nur der andere der beiden Schwenkhebel mitgenommen werden darf. Die beiden Federn sind je als Schraubendruckfeder ausgebildet und je auf einem Spannbolzen angeordnet, die im Bereich ihres einen Endes am einen bzw. anderen Schwenkhebel angelenkt sind. Im Bereich ihres anderen Endes, mittels dessen der eine Spannbolzen den einen Sperrhebel und der andere den anderen Sperrhebel aus seiner Sperrstellung herausbewegen kann, sind die Spannbolzen je mit einem Langloch versehen, den ein den Spannbolzen mit dem anderen Schwenkhebel verbindender und als Anlage für die Schraubendruckfeder dienender Bolzen durchgreift. Als Abtriebsglied ist eine gleichachsig zur Antriebswelle angeordnete Schaltwelle vorgesehen, auf der neben den beiden Schwenkhebeln ein doppelarmiger Hebel angeordnet ist, der über Mitnehmer vom einen der beiden Schwenkhebel in der einen Drehrichtung und vom anderen in der andren Drehrichtung antreibbar ist. Der konstruktive Aufbau dieser Schalterantriebsvorrichtung ist daher relativ kompliziert, was sich auch negativ auf den Raumbedarf und den Wartungsaufwand auswirkt.In a known switch drive device of this type (AT-B-277 368), the two pivot levers are mounted on a shaft which forms the drive element and are coupled to this shaft via a gearbox with a dead gear. The dead gear of the gearbox is required here, because when the shaft rotates in one direction only one and the other of the two pivot levers may be taken along in the other direction. The two springs are each designed as a helical compression spring and are each arranged on a clamping bolt, which are articulated in the region of one end of one or the other swivel lever. In the area of their other end, by means of which the one clamping bolt can move the one locking lever and the other the other locking lever out of its locking position, the clamping bolts are each provided with an elongated hole, which connects the clamping bolt with the other pivoting lever and as an attachment for the helical compression spring serving bolt reaches through. As the output member, a shift shaft arranged coaxially with the drive shaft is provided, on which, in addition to the two pivot levers, a double-armed lever is arranged, which can be driven by drivers of one of the two pivot levers in one direction of rotation and the other in the other direction of rotation. The structural design of this switch drive device is therefore relatively complicated, which also has a negative effect on the space requirement and the maintenance effort.

Der Erfindung liegt die Aufgabe zugrunde, eine Schalterantriebsvorrichtung zu schaffen, die einen möglichst kleinen Raumbedarf hat und insbesondere eine schmale Bauweise ermöglicht. Mit einer Schalterantriebsvorrichtung der eingangs genannten Art wird diese Aufgabe erfindungsgemäß dadurch gelöst, daß der eine Schwenkhebel das Antriebsglied und der andere Schwenkhebel das Abtriebsglied bildet und daß die Sperrhebel in die Schwenkbahn des Antriebsgliedes ragen sowie von diesem aus ihrer Sperrstellung heraus in die Freigabestellung bewegt werden.The invention has for its object to provide a switch drive device that takes up as little space as possible and in particular enables a narrow design. With a switch drive device of the type mentioned, this object is achieved according to the invention in that one pivot lever forms the drive member and the other pivot lever forms the output member and that the locking levers protrude into the pivoting path of the drive member and are moved by the latter out of their locked position into the release position.

Eine derartige Schalterantriebsvorrichtung weist eine minimale Anzahl von konstruktiv einfachen Einzelteilen auf und hat daher nicht nur einen einfachen und robusten Aufbau, sondern auch einen geringen Platzbedarf. Insbesondere erlaubt die erfindungsgemäße Antriebsvorrichtung eine schmale Bauweise, wozu beiträgt, daß nur zwei Schwenkhebel nebeneinander angeordnet werden müssen.Such a switch drive device has a minimal number of structurally simple individual parts and therefore not only has a simple and robust structure, but also requires little space. In particular, the drive device according to the invention allows a narrow design, which contributes to the fact that only two pivot levers have to be arranged side by side.

Die erfindungsgemäße Schalterantriebsvorrichtung ist sowohl für Lastschalter als auch für Leistungsschalter verwendbar, und infolge ihres geringen Raumbedarfs eignet sie sich auch zum Antrieb von Schaltern mit einer Isoliergasfüllung, welche infolge der hohen Isolierfähigkeit des Isoliergases, bei dem es sich beispielsweise um SF6-Gas handeln kann, relativ geringe Abmessungen haben. Infolge der schmalen Bauweise können mehrere Antriebsvorrichtungen dicht nebeneinander angeordnet werden, wie dies erforderlich sein kann, wenn beispielsweise im Gehäuse eines mit Isoliergas gefüllten Schalters mehrere Schalteinheiten dicht nebeneinander angeordnet sind.The switch drive device according to the invention can be used for both circuit breakers and circuit breakers, and due to its small space requirement, it is also suitable for driving switches with an insulating gas filling, which due to the high insulating ability of the insulating gas, which can be SF 6 gas, for example , have relatively small dimensions. As a result of the narrow design, a plurality of drive devices can be arranged close to one another, as may be necessary if, for example, a plurality of switching units are arranged close to one another in the housing of a switch filled with insulating gas.

Vorzugsweise haben die beiden Schwenkhebel eine gemeinsame Schwenkachse, um den Aufwand und den Raumbedarf noch weiter zu verkleinern.The two pivot levers preferably have a common pivot axis in order to further reduce the outlay and the space requirement.

Vorteilhafterweise ist der eine Schwenkhebel zumindest in dem neben dem anderen Schwenkhebel liegenden Abschnitt durch zwei im Abstand nebeneinander liegende Arme gebildet, zwischen denen der andere Schwenkhebel liegt, weil hierdurch die Kraftübertragung zwischen den Schwenkhebeln und den spannbaren Federn mit dem kleinstmöglichen konstruktiven Aufwand betriebssicher möglich ist.Advantageously, the one pivot lever is formed at least in the section lying next to the other pivot lever by two spaced-apart arms between which the other pivot lever lies, because this enables the power transmission between the pivot levers and the tensionable springs to be carried out in an operationally reliable manner with the least possible design effort.

Bei einer bevorzugten Ausführungsform sind die spannbaren Federn als Druckfedern ausgebildet, da hierdurch die Anpassung der Federcharakteristik an die Erfordernisse vereinfacht wird. Besonders einfach ist eine solche Anpassung und Änderung der Federcharakteristik dann, wenn die Druckfedern als Tellerfederpakete ausgebildet sind, weil dann Tellerfedern unterschiedlicher Charakteristik kombiniert werden können. Beispielsweise kann man durch eine entsprechende Federcharakteristik eine sehr hohe Anfangskraft zur Erzielung einer hohen Beschleunigung zum Beginn des Schaltvorgangs erreichen. Ein weiterer Vorteil von Druckfedern besteht darin, daß der konstruktive Aufwand für die Kraftübertragung und damit auch der Raumbedarf sehr gering gehalten werden können. Dies gilt vor allem bei einer Ausbildung der Antriebsvorrichtung gemäß Anspruch 5.In a preferred embodiment, the tensionable springs are designed as compression springs, since this simplifies the adaptation of the spring characteristics to the requirements. Such an adaptation and change of the spring characteristic is particularly simple when the compression springs are designed as plate spring assemblies, because plate springs of different characteristics can then be combined. For example, you can achieve a very high initial force to achieve a high acceleration at the beginning of the switching process by means of a corresponding spring characteristic. Another advantage of compression springs is that the design effort for the power transmission and thus the space requirement can be kept very low. This applies in particular when the drive device is designed according to claim 5.

Eine besonders einfache und betriebssichere, aber auch raumsparende Ausbildung und Anordnung der Sperrhebel sowie der sie betätigenden Bauteile erhält man mit den Merkmalen der Ansprüche 6 bis 9.A particularly simple and reliable, but also space-saving design and arrangement of the locking lever and the components that operate them are obtained with the features of Claims 6 to 9.

Hinsichtlich einer schmalen Bauweise und einer aus Sicherheitsgründen erwünschten Abdeckung der bewegbaren Teile ist eine Ausgestaltung der erfindungsgemäßen Antriebsvorrichtung gemäß Anspruch 10 vorteilhaft.With regard to a narrow construction and a covering of the movable parts desired for safety reasons, an embodiment of the drive device according to the invention is advantageous.

Im folgenden ist die Erfindung an Hand eines in der Zeichnung dargestellten Ausführungsbeispiels im einzelnen erläutert.The invention is explained in detail below using an exemplary embodiment shown in the drawing.

Es zeigt

  • Fig. 1 eine schematisch dargestellte Ansicht eines Schalters mit drei nebeneinander angeordneten Antriebsvorrichtungen;
  • Fig. 2 eine Seitenansicht des Schalters und eine der Antriebsvorrichtungen;
  • Fig. 3 eine Seitenansicht der Antriebsvorrichtung in der einen Endstellung;
  • Fig. 4 einen Schnitt der Antriebsvorrichtung in einer Stellung während des Spannens der einen Druckfeder;
  • Fig. einen Schnitt nach der Linie V-V der Fig. 3.
It shows
  • Figure 1 is a schematically illustrated view of a switch with three drive devices arranged side by side.
  • Fig. 2 is a side view of the switch and one of the drive devices;
  • 3 shows a side view of the drive device in one end position;
  • 4 shows a section of the drive device in one position during the tensioning of a compression spring;
  • 3 shows a section along the line VV in FIG. 3.

Einem Schalter 1, bei dem es sich im Ausführungsbeispiel um einen SF6-isolierten Mittelspannungssschalter handelt, sind drei gleich ausgebildete Schalter-Antriebsvorrichtungen 2 zugeordnet, da das Gehäuse des Schalters drei dreiphasige Schalter enthält, die aus je drei einphasigen Schalteinheiten 3 aufgebaut sind. Die Schalter-Antriebsvorrichtungen 2 sind, wie besonders Fig. 1 zeigt, nebeneinander auf dem Deckel des Schaltergehäuses montiert.A switch 1, which in the exemplary embodiment is an SF 6 -insulated medium voltage switch, is assigned three switch drive devices 2 of the same design, since the housing of the switch contains three three-phase switches, which are each composed of three single-phase switching units 3. As particularly shown in FIG. 1, the switch drive devices 2 are mounted next to one another on the cover of the switch housing.

Wegen der gleichen Ausbildung aller Schalter-Antriebsvorrichtungen 2 ist im folgenden nur eine einzige näher erläutert.Because of the same design of all switch drive devices 2, only one is explained in more detail below.

Eine rechteckförmige Bodenplatte 4 trägt zwei lotrecht auf ihr stehende sowie parallel und im Abstand voneinander angeordnete Seitenplatten 5 mit im wesentlichen rechteckförmiger Konfiguration. In den Seitenplatten 5 sind die beiden Enden einer parallel zur Bodenplatte 4 liegenden Schwenkachse 6 festgelegt, auf der ein als Ganzes mit 7 bezeichneter Antriebshebel sowie ein als Ganzes mit 8 bezeichneter Abtriebshebel schwenkbar gelagert sind. Der Abtriebshebel 8 wird, wie Fig. 5 zeigt, durch zwei hochkant stehende Flachschienen 8' gebildet, die parallel nebeneinander liegen und einen Abstand voneinander haben, der durch zwei Augenschrauben 9 bedingt ist, deren augenförmiger Kopf zwischen den beiden Flachschienen 8' liegt und schwenkbar auf je einem Stift 10 gelagert ist. Die beiden Stifte 10, welche in Bohrungen der Flachschienen 8' eingreifen, sind, wie Fig. 3 zeigt, annähernd diametral bezüglich der Schwenkachse 6 in gleichem Abstand von dieser angeordnet. Der Antriebshebel 7, der in der entgegengesetzten Richtung wie der Abtriebshebel 8 über die Seitenplatten 5 übersteht und ebenso wie der Abtriebshebel 8 über die Schwenkachse 6 hinaus verlängert ist, besteht ebenfalls aus zwei hochkant liegenden und parallel zueinander angeordneten Flachschienen 7', deren Abstand jedoch, wie Fig. 5 zeigt, so groß gewählt ist, daß zwischen ihnen der Abtriebshebel 8 frei geschwenkt werden kann.A rectangular base plate 4 carries two side plates 5 which are perpendicular to it and are arranged in parallel and at a distance from one another with an essentially rectangular configuration. In the side plates 5, the two ends of a pivot axis 6 lying parallel to the base plate 4 are fixed, on which a drive lever designated as a whole as 7 and a drive lever designated as a whole as 8 are pivotably mounted. The output lever 8, as shown in FIG. 5, is formed by two upright flat rails 8 'which are parallel to one another and are at a distance from one another which is caused by two eyebolts 9, the eye-shaped head of which lies between the two flat rails 8' and can be pivoted is mounted on a pin 10 each. The two pins 10, which engage in holes in the flat rails 8 ', are, as shown in FIG. 3, arranged approximately diametrically with respect to the pivot axis 6 at the same distance from it. The drive lever 7, which protrudes in the opposite direction from the side plates 5 in the opposite direction to the output lever 8 and, like the output lever 8, is also extended beyond the pivot axis 6, also consists of two upright flat rails 7 'arranged parallel to one another, the spacing of which, however, 5 shows, is chosen so large that the output lever 8 can be pivoted freely between them.

Die beiden Augenschrauben 9 sind je an das eine Ende einer mit einem Innengewinde versehenen Hülse 11 eingeschraubt, an deren anderem Ende mittels einer Schraube 12 ein Federteller 13 befestigt ist. An diesem Federteller liegt das eine Ende eines von der Hülse 11 getragenen Tellerfederpaketes 14 bzw. 14' an, dessen anderes Ende an der ebenen Fläche eines längsverschiebbar auf der Hülse 11 sitzenden Druckstückes 15 anliegt, das auf der dem Antriebshebel 7 und dem Abtriebshebel 8 zugekehrten Seite eine zylindrische Mantelfläche hat, wie die Fig. 3 und 4 zeigen. Mit dieser konvex-zylindrischen Mantelfläche liegen die Druckstücke 15 in den beiden Endstellungen der Hebel 7 und 8 sowie während des Spannvorgangs des zugeordneten Tellerfederpaketes an den beiden Flachschienen 7' des Antriebshebels 7 an, welche dort, wo die Druckstücke 15 anliegen, eine nutartige Ausnehmung mit konkav-zylindrischem Profil haben, dessen Krümmungsradius an denjenigen der konvex-zylindrischen Fläche der Druckstücke 15 angepaßt ist. Im Ausführungsbeispiel sind diese Ausnehmungen im Vergleich zum zugeordneten Stift 10 etwas weiter zum benachbarten freien Hebelende hin versetzt.The two eyebolts 9 are each screwed to one end of a sleeve 11 provided with an internal thread, at the other end of which a spring plate 13 is fastened by means of a screw 12. At this spring plate lies one end of a plate spring assembly 14 or 14 'carried by the sleeve 11, the other end of which rests on the flat surface of a longitudinally displaceable pressure piece 15 which is located on the sleeve 11 and which faces the drive lever 7 and the output lever 8 Side has a cylindrical lateral surface, as shown in FIGS. 3 and 4. With this convex-cylindrical outer surface, the pressure pieces 15 rest in the two end positions of the levers 7 and 8 and during the tensioning process of the associated plate spring assembly on the two flat rails 7 'of the drive lever 7, which have a groove-like recess where the pressure pieces 15 rest have a concave-cylindrical profile, the radius of curvature of which is adapted to that of the convex-cylindrical surface of the pressure pieces 15. In the exemplary embodiment, these recesses are offset somewhat further compared to the associated pin 10 to the adjacent free lever end.

Um den Abtriebshebel 8 in der in den Fig. 3 und 4 dargestellten Endstellung zu halten, während durch eine Schwenkbewegung des Antriebshebels 7 entgegen dem Uhrzeigersinn in einer Blickrichtung gemäß den Fig. 3 und 4 das in diesen Figuren links dargestellte Tellerfederpaket 14 gespannt wird, ist ein erster Sperrhebel 16 vorgesehen, der oberhalb des über die Schwenkachse 6 hinaus verlängerten Endabschnittes des Abtriebshebels 8 mit zur Schwenkachse paralleler Achse schwenkbar auf einem Bolzen 17 gelagert ist. Die Enden dieses Bolzens liegen in Bohrungen der Seitenplatten 5. Das dem Antriebshebel 7 zugekehrte Ende des ersten Sperrhebels 16 ist, wie Fig. zeigt, als Gabel ausgebildet, in der eine über die Gabelenden überstehende Rolle 19 drehbar auf einem parallel zur Schwenkachse 6 liegenden Stift 20 gelagert ist. Die Länge des Stiftes 20 und die Abmessung des gabelförmigen Endes in Längsrichtung dieses Stiftes sind kleiner als der Abstand zwischen den Flachschienen 7' des Antriebshebels 7. Die Rolle 19 liegt an der Oberseite der beiden Flachschienen 8' des Abtriebshebels 8 an.In order to hold the output lever 8 in the end position shown in FIGS. 3 and 4, while the plate spring assembly 14 shown on the left in these figures is tensioned by a pivoting movement of the drive lever 7 counterclockwise in a viewing direction according to FIGS. 3 and 4 A first locking lever 16 is provided, which is pivotably mounted on a bolt 17 above the end section of the output lever 8 which is extended beyond the pivot axis 6 and has an axis parallel to the pivot axis. The ends of this bolt lie in holes in the side plates 5. The end of the first locking lever 16 facing the drive lever 7, as shown in FIG. 1, is designed as a fork in which a roller 19 projecting beyond the fork ends is rotatable on a pin lying parallel to the pivot axis 6 20 is stored. The length of the pin 20 and the dimension of the fork-shaped end in the longitudinal direction of this pin are smaller than the distance between the flat rails 7 'of the drive lever 7. The roller 19 rests on the top of the two flat rails 8' of the output lever 8.

Bei der in Fig. 3 dargestellten Endstellung des Abtriebshebeis8 schließt die durch die Schwenkachse des ersten Sperrhebels 16 und die Längsachse seiner Rolle 19 definierte Längsachse mit der Längsachse des Antriebshebels 8 einen Winkel ein, der etwas kleiner ist als 90°. Damit der Sperrhebel nicht unter der auf ihn vom Abtriebshebel ausgeübten Kraft entgegen dem Uhrzeigersinn bei einer Blickrichtung gemäß Fig. 3 schwenkt, ist ein in den Seitenplatten 5 gelagerter Anschlagstift 21 vorgesehen, an dem der der Rolle 19 abgekehrte Endabschnitt des Sperrhebels 16 Anschlag findet.In the end position of the output lever 8 shown in FIG. 3, the longitudinal axis defined by the pivot axis of the first locking lever 16 and the longitudinal axis of its roller 19 encloses an angle with the longitudinal axis of the drive lever 8 which is somewhat less than 90 °. So that the locking lever does not pivot counterclockwise under the force exerted on it by the output lever when looking in accordance with FIG. 3, a stop pin 21 mounted in the side plates 5 is provided, on which the end portion of the locking lever 16 facing away from the roller 19 stops.

Zwischen der Schwenkachse und dem gabelförmigen Ende steht auf beiden Seiten des ersten Sperrhebels 16 ein parallel zur Schwenkachse liegender Mitnehmerstift 22 über, dessen Länge so gewählt ist, daß er in den Schwenkbereich der beiden Flachschienen 7' des Antriebshebels 7 ragt.Between the pivot axis and the fork-shaped end projects on both sides of the first locking lever 16 a parallel to the pivot axis driver pin 22, the length of which is selected so that it protrudes into the pivot range of the two flat rails 7 'of the drive lever 7.

Ein gleich ausgebildeter, zweiter Sperrhebel 23 ist schwenkbar auf einem Bolzen 24 gelagert, der so angeordnet ist, daß in der zweiten Endstellung des Abtriebshebels 8, in der dieser nach unten in eine Lage geschwenkt ist, welche der in Fig. 3 dargestellten Lage des Antriebshebels entspricht, die Längsachse des Abtriebshebels 8 mit derjenigen des zweiten Sperrhebels 23 einen Winkel einschließt, der wenig kleiner als 90° ist. In dieser Stellung liegt der zweite Sperrhebel 23 an einem Anschlagstift 21' an, der eine Verkleinerung des genannten Winkels verhindert.An identically designed, second locking lever 23 is pivotally mounted on a bolt 24 which is arranged such that in the second end position of the output lever 8, in which it is pivoted downward into a position which is the position of the drive lever shown in FIG. 3 corresponds, the longitudinal axis of the output lever 8 with that of the second locking lever 23 encloses an angle which is slightly less than 90 °. In this position, the second locking lever 23 bears against a stop pin 21 ', which prevents the mentioned angle from being reduced.

Wird der Antriebshebel 7 aus der in Fig. 3 dargestellten Stellung nach oben geschwenkt, wie dies Fig. 4 zeigt, dann wird zunächst noch der Abtriebshebel 8 durch den ersten Sperrhebel 16 in der in Fig.3 dargestellten Endstellung gehalten. Dies bedeutet, daß auch die beiden Stifte 10, welche die Augen der Augenschrauben 9 durchdringen, ihre Position beibehalten. Die Schwenkbewegung des Antriebshebels 7 entgegen dem Uhrzeigersinn bewirkt daher eine Vergrößerung des Abstandes zwischen dem Druckstück 15 des in Fig.3 links dargestellten Tellerfederpaketes 14 und dem Stift 10, was gleichbedeutend ist mit einer Verschiebung des Druckstückes 15 auf der Hülse 11 gegen den Federteller 13 hin, wodurch das Tellerfederpaket 14 gespannt wird. Bei diesem Spannvorgang schwenkt die Hülse 11 entgegen dem Uhrzeigersinn um den Stift 10.If the drive lever 7 is pivoted upwards from the position shown in FIG. 3, as shown in FIG. 4, then the output lever 8 is first held in the end position shown in FIG. 3 by the first locking lever 16. This means that the two pins 10, which penetrate the eyes of the eyebolts 9, also retain their position. The pivoting movement of the drive lever 7 counterclockwise therefore causes an increase in the distance between the pressure piece 15 of the plate spring assembly 14 shown on the left in FIG. 3 and the pin 10, which is equivalent to a displacement of the pressure piece 15 on the sleeve 11 against the spring plate 13 , whereby the plate spring assembly 14 is tensioned. During this clamping process, the sleeve 11 pivots counterclockwise around the pin 10.

Das andere, in Fig. 3 rechts dargestellte Tellerfederpaket 14' wird hingegen bei dieser Schwenkbewegung des Antriebshebels 7 nicht gespannt, da die Flachschienen 7' vom zugehörigen Druckstück abheben, weil der benachbarte Stift 10 zunächst seine Lage nicht verändert. Die Hülse 11 des Federpaketes 14' wird daher zunächst ihre Lage beibehalten. Ebenso bleibt die Lage des zweiten Sperrhebels 23 während des Spannvorgangs unverändert, da dessen Rolle auf dem Abtriebshebel 8 aufliegt.The other plate spring assembly 14 'shown on the right in FIG. 3, on the other hand, is not tensioned during this pivoting movement of the drive lever 7, since the flat rails 7' lift off the associated pressure piece because the adjacent pin 10 initially does not change its position. The sleeve 11 of the spring assembly 14 'will therefore initially maintain its position. Likewise, the position of the second locking lever 23 remains unchanged during the tensioning process, since its role rests on the output lever 8.

Gegen Ende des Spannvorganges nähert sich die Oberseite der Flachschienen 7' des Antriebshebels 7 dem Mitnehmerstift 22 des ersten Sperrhebels 16. Durch je eine nutförmige Ausnehmung 25 mit konkav-zylindrischem Profil in den beiden Flachschienen 7 gegenüber den Ausnehmungen für die Anlage der Druckstücke 15 wird bei einem weiteren Schwenken des Antriebshebels 7 entgegen dem Uhrzeigersinn auf den Mitnehmerstift 22 eine Kraft ausgeübt, welche ihn über diejenige Schwenkstellung hinaus schwenkt, in der seine Längsachse senkrecht auf der Längsachse des Abtriebshebels 8 steht. Sobald der erste Sperrhebel 16 diese Totpunktlage überschritten hat, wird er unter der auf ihn vom Abtriebshebel 8 ausgeübten Kraft noch weiter im Uhrzeigersinn geschwenkt, wodurch der Abtriebshebel freigegeben wird und unter der Kraft des sich nun entspannenden, in Fig.3 links dargestellten Tellerfederpaketes 14 nach unten in seine andere Endstellung geschwenkt wird.Towards the end of the tensioning process, the top of the flat rails 7 'of the drive lever 7 approaches the driving pin 22 of the first locking lever 16. A groove-shaped recess 25 with a concave-cylindrical profile in the two flat rails 7 opposite the recesses for the contact of the pressure pieces 15 is used in a further pivoting of the drive lever 7 counterclockwise exerted a force on the driver pin 22 which pivots it beyond the pivot position in which its longitudinal axis is perpendicular to the longitudinal axis of the output lever 8. As soon as the first locking lever 16 has exceeded this dead center position, it is pivoted further clockwise under the force exerted on it by the output lever 8, whereby the output lever is released and under the force of the now releasing plate spring assembly 14 shown on the left in FIG. 3 is pivoted down to its other end position.

In dieser Endstellung nimmt der erste Sperrhebel 16 eine Lage ein, die derjenigen des zweiten Sperrhebels 23 in Fig. 3 entspricht. Letzterer wird hingegen, während sich der Abtriebshebel 8 in seine andere Endstellung bewegt, unter der Wirkung einer Rückholfeder 26 im Uhrzeigersinn in diejenige Stellung geschwenkt, die der in Fig. 3 dargestellten Stellung des ersten Sperrhebels 16 entspricht und in der er an seinem Anschlagstift anliegt. Eine entsprechende Rückholfeder 26 weist auch der erste Sperrhebel 16 auf. Die Federn 26 sind einerseits am oberen Ende des zugeordneten Sperrhebels und anderseits an zwei Stiften 27 befestigt, welche die beiden Seitenplatten 5 miteinander verbinden.In this end position, the first locking lever 16 assumes a position that corresponds to that of the second locking lever 23 in FIG. 3. The latter, on the other hand, is pivoted clockwise under the action of a return spring 26 into the position corresponding to the position of the first locking lever 16 shown in FIG. 3 and while it is resting on its stop pin while the output lever 8 is moving into its other end position. The first locking lever 16 also has a corresponding return spring 26. The springs 26 are fastened on the one hand to the upper end of the associated locking lever and on the other hand to two pins 27 which connect the two side plates 5 to one another.

Für eine Schalterbetätigung im entgegengesetzten Sinne muß der nun oben stehende Antriebshebel 7 wieder nach unten in die in Fig. 3 dargestellte Lage geschwenkt werden. Dabei wird zunächst der Abtriebshebel 8 durch den zweiten Sperrhebel 23 blockiert, so daß die beiden Flachschienen 7' das Druckstück 15 des in Fig. 3 rechts dargestellten Tellerfederpaketes 14' gegen das freie Ende seiner Hülse 11 hin verschieben und dabei dieses Tellerfederpaket 14' spannen. Gegen Ende des Schwenkvorganges kommen die beiden Flachschienen 7' mit je einer nutförmigen Ausnehmung 25' in Anlage an den Mitnehmerstift 22 des zweiten Sperrhebels 23. Dieser wird dadurch entgegen dem Uhrzeigersinn geschwenkt und gibt nach dem Überschreiten der Totpunktlage den Abtriebshebel 8 frei. Dieser schwenkt nun unter der Kraft des sich entspannenden Tellerfederpaketes nach oben in die in Fig. 3 dargestellte Lage. Gleichzeitig schwenkt die Feder 26 den ersten Sperrhebel 16 wieder in die Sperrstellung.For a switch actuation in the opposite sense, the drive lever 7 now at the top must be pivoted down again into the position shown in FIG. 3. First, the output lever 8 is blocked by the second locking lever 23, so that the two flat rails 7 'move the pressure piece 15 of the plate spring assembly 14' shown in FIG. 3 on the right against the free end of its sleeve 11 and thereby tension this plate spring assembly 14 '. Towards the end of the pivoting process, the two flat rails 7 ', each with a groove-shaped recess 25', come into contact with the driver pin 22 of the second locking lever 23. This is pivoted counterclockwise and releases the output lever 8 after the dead center position has been exceeded. This now pivots under the force of the relaxing plate spring assembly up into the position shown in FIG. 3. At the same time, the spring 26 pivots the first locking lever 16 back into the locking position.

Claims (10)

1. A switch driving system having a driving part and a driven part, with two rocking levers (7, 8), whose turnpins (6) are in a single plane and are parallel to each other and therlevers (7, 8) are joined together, at a point spaced from their turnpin (6), by at least one spring (14,14') in each case which is able to be cocked, and with a locking unit, which has two locking levers (16, 23), placed in the plane of the rocking levers (7, 8), such locking levers locking in turn the rocking lever (8) transmitting the energy of the cocked spring (14, 23) to the switch till the other rocking lever (7) on being turned as is necessary for cocking the spring (14, 23) in relation to the first-named rocking lever (8) has been moved into a starting position, characterized in that the one rocking lever (7) takes the form of the driving part, while the other rocking lever (8) takes the form of the driven part and in that the locking levers (16, 23) are designed sticking out into the path of turning of the driving part and are moved by the same out of their locking position into the unlocked position.
2. A system as claimed in claim 1, characterized in that the two rocking levers (7, 8) have a common turnpin (6).
3. A system as claimed in claim 1 or claim 2, characterized in that the one rocking lever (7), at least in its part next to the other rocking lever (8), is formed by two arms (7') placed side-by-side and between which the other rocking lever (8) is placed.
4. A system as claimed in anyone of claims 1 to 3, characterized in that the springs, which may be cocked, are designed as compression springs and, more specially as Belleville spring washers (14, 14').
5. A system as claimed in claim 3 or claim 4, characterized in that the one end of each compression spring (14, 14') is designed to be supported by way of a force take-up part (15) on a part, formed by two arms (8') placed side-by-side, of the driven lever (8) and the other end is designed to be supported on a Belleville spring washer, which is placed at one end of a bolt (9, 11) supporting the compression spring, while the other end of the bolt, running through the force take-up part, is hingedly joined with the driven lever (8).
6. A system as claimed in anyone of claims 1 to 5, characterized in that each locking lever (16, 23) present may be moved out of its locking position as fixed by a stop (21, 21') against the force of a return spring (26) by way of the driving lever (7) past the neutral position, in which the lengthways axis fixed by the turnpins (17, 24) and the point of touching the driven lever (8) is normal to the lengthways axis of the driven lever, turningly into the unlocked position, in which the lengthways axis of the locking lever (16, 23) makes an acute angle to the lengthways axis of the driven lever (8).
7. A system as claimed in anyone of claims 3 to 6, characterized in that the end, resting against the driven lever (8), of each locking lever (16, 23) is formed by a roller (19) and its breadth, as measured in its axis-direction, is smaller than the spacing between the two arms (7') of the driving lever (7).
8. A system as claimed in claim 7, characterized in that each locking lever (16, 23) has a driving dog (22) running out to the side and running out into the path of turning of the driving lever (7).
9. A system as claimed in claim 8, characterized in that the side (25) of the driving lever (7), against which the driving dog (22) comes to rest, has a hollow curved form as seen from the driving dog (22).
10. A system as claimed in anyone of claims 1 to 9, characterized in that the two rocking levers (7, 8), at least for a part of their length, and the locking levers (16,23) and the springs (10), which may be cocked, are placed between two parallel plates (5) which have holes for taking up the ends of the turnpin (6) for the rocking levers (7, 8) and the turnpin (17, 24) for the locking levers (16, 23).
EP19790100204 1978-01-28 1979-01-24 Driving mechanism for switches Expired EP0003352B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2803787 1978-01-28
DE19782803787 DE2803787B2 (en) 1978-01-28 1978-01-28 Switch drive device

Publications (2)

Publication Number Publication Date
EP0003352A1 EP0003352A1 (en) 1979-08-08
EP0003352B1 true EP0003352B1 (en) 1981-11-25

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ID=6030650

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790100204 Expired EP0003352B1 (en) 1978-01-28 1979-01-24 Driving mechanism for switches

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EP (1) EP0003352B1 (en)
DE (1) DE2803787B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3313432C1 (en) * 1983-04-13 1984-07-12 Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart Switch drive device having a manually operable input-drive element
US4587390A (en) * 1985-01-07 1986-05-06 Golden Gate Switchboard Co. Vacuum circuit breaker
DE4330715A1 (en) * 1993-09-10 1995-03-16 Kloeckner Moeller Gmbh Electrical switch with toggle switch

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE759194C (en) * 1937-12-01 1953-05-26 Siemens Schuckertwerke A G Free release clutch for electrical circuit breakers
CH427961A (en) * 1963-04-09 1967-01-15 Sachsenwerk Licht & Kraft Ag Spring drive on an electrical switchgear
DE1665584A1 (en) * 1964-03-28 1971-03-18 Siemens Ag Jump mechanism for toggle switch
DE1515563B2 (en) * 1965-06-18 1972-02-17 Voigt & Haeffner Gmbh, 6000 Frankfurt DEVICE FOR SWALLOWING AN ELECTRIC SWITCH ON
DE1615866A1 (en) * 1967-02-01 1970-05-27 Concordia Sprecher Schalt Drive for switching electrical switches on and off quickly
DE2158978A1 (en) * 1971-11-27 1973-05-30 Calor Emag Elektrizitaets Ag DRIVE FOR ELECTRIC SWITCHES

Also Published As

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DE2803787C3 (en) 1984-08-02
DE2803787B2 (en) 1979-11-22
EP0003352A1 (en) 1979-08-08
DE2803787A1 (en) 1979-08-02

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