EP1473754B1 - Latch mechanism for locking a switch axis and electrical switch with such a latch mechanism - Google Patents

Latch mechanism for locking a switch axis and electrical switch with such a latch mechanism Download PDF

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Publication number
EP1473754B1
EP1473754B1 EP04090097A EP04090097A EP1473754B1 EP 1473754 B1 EP1473754 B1 EP 1473754B1 EP 04090097 A EP04090097 A EP 04090097A EP 04090097 A EP04090097 A EP 04090097A EP 1473754 B1 EP1473754 B1 EP 1473754B1
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EP
European Patent Office
Prior art keywords
lever
stop
force
spring
latching mechanism
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
EP04090097A
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German (de)
French (fr)
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EP1473754A2 (en
EP1473754A3 (en
Inventor
Torsten Ahlert
Jörg-Uwe DAHL
Marc Liebetruth
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Siemens AG
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Siemens AG
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Publication of EP1473754A3 publication Critical patent/EP1473754A3/en
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Publication of EP1473754B1 publication Critical patent/EP1473754B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/505—Latching devices between operating and release mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release

Definitions

  • the invention is in the field of electrical switches, which are equipped with a drive shaft coupled to a drive for moving at least one movable contact, and is applicable to the structural design of a switching mechanism for latching the shift shaft.
  • a well-known such electrical switch in which the shift shaft via a drive train against the force of at least one spring from an OFF position can be converted into an ON position, has a switch latch, wherein a coupled to the drive train pivotable first lever on a in a Verklinkungswolf held stop is supported.
  • a switch latch for transferring the stop into a release position, in which the first lever loses its support on the stop, in this case two triggering operations are provided.
  • two triggering operations are provided for transferring the stop into a release position, in which the first lever loses its support on the stop.
  • the second lever is held by means of at least one second spring in a first stop position on the first lever.
  • the work surface acts on the stop so that the stop - in the course of a compared to the "normal” triggering process "accelerated” tripping process - transferred to its release position becomes ( US 6,018,284 ).
  • the invention is based on the object to make the caused by a pivoting of the second lever "accelerated" tripping faster.
  • this object is achieved in that the forces of the two springs act independently of each other on the first lever.
  • the second lever is pivotally mounted on the first lever and the movement path of the second lever is limited by two stop surfaces of the first lever.
  • the movement of the second lever is determined only by the structural design of the first lever and the initiating force but not by other parts of the drive train or the coupling of the drive train with the first lever.
  • the second lever can therefore be combined before the assembly of the switching mechanism to a structural unit with the first lever, which forms a closed-system power. Therefore, in the first stop position, the force of the second spring does not affect the force with which the first lever bears against the stop.
  • the second lever can serve, for example, the initiating force of a magnetic release or the force of a spring accumulator.
  • the FIG. 1 shows an electrical switch 1 in the form of a low-voltage circuit breaker with a switching contact system and an associated arc quenching chamber 2.
  • the switching contact system consists of a fixed switching contact arrangement 3 and a movable switching contact arrangement 4.
  • the movable switching contact arrangement 4 has a pivotable contact carrier 5 and a plurality of contact lever. 6 on, wherein the contact lever 6 are pivotable parallel to each other and resiliently supported by means of first springs 7 under bias to the contact carrier 5.
  • the movable switching contact arrangement 4 is in a known manner via a in the FIG. 1 only schematically indicated lever assembly 8 (see also FIG. 2 ) coupled to a switching shaft 9.
  • the shift shaft 9 serves to drive not further shown, arranged parallel to the switching contact system shown further switching contact systems. It is by means of a drive device 12 from an OFF position, in which the switch contact system is open, in an ON position, in which the switch contact system is closed to transfer.
  • the drive device 12 has a drive 19 provided with a spring accumulator 18, a drive train 15 which couples the drive 19 to the shift shaft 9, and a switching mechanism 17.
  • the dial lock 17 has in a known manner on two latching devices, of which a first for latching the tensioned spring memory 18 and the second for latching against the force of the first spring 7 converted into its ON position switching shaft 9 is used.
  • the second latching device of the switch lock has a first lever 21 coupled to the drive train 15, a second lever 22 and a stop 23 configured as a half shaft.
  • the first lever 21 consists of two parallel to each other at a distance from each other arranged partial levers and is pivotable about a first pivot bearing 25 which is held stationary on a support means 14 for the drive device 12.
  • the first lever is in latched ON position of the shift shaft 9 with a Verklinkungs constitutional 24 under the force of the first spring 7 on the stop 23 at.
  • the stopper 23 is actuated via a triggering strut (not shown), for example by hand, by means of a pushbutton 10 or arranged on the front of the switch by an electromagnet 11.
  • the second lever 22 is pivotable about a second pivot bearing 26, wherein the second pivot bearing 26 is formed by a bolt which is held at its ends by the two partial levers of the first lever 21.
  • the second pivot bearing 26 is formed by a bolt which is held at its ends by the two partial levers of the first lever 21.
  • a trained on the first lever 21 pin 29 engages in a formed in the second lever slot 30, wherein the two ends of the elongated hole each form a stop surface 31 and 32 for the pin 29.
  • the one end 35 of the second spring 28 engages over a lug 36 of the second lever 22.
  • the other end 37 of the second spring 28 is supported on projections 38 of the partial levers of the first lever 21.
  • FIG. 3 is located at the first stop position of the second lever 22 on the first lever 21, a first of the two stop surfaces 31 of the elongated hole 30 under the force of the second spring 28 on the pin 29 at.
  • a ramp-like work surface 40 of the second lever 22 below the designed as a half-wave stop 23 without affecting these forces.
  • an initiating means 41 which is designed as a fast magnetic release, acts with an initiating force F directly on an actuating surface of the second lever.
  • the initiating force F may also be provided by other initiating means or mechanisms, for example by a spring accumulator.
  • the second lever 22 under the initiating force F of the initiating means 41 against the force of the second spring 28 in such a counterclockwise direction pivoted that its ramp-like work surface 40 slides along the flat bottom 42 of the half-wave while rotating the half-wave clockwise and transferred to its release position.
  • the first lever 21, the drive train 15 and the shift shaft 9 lose their support to the half-wave and the shift shaft 9 is transferred under the force of the first spring 7 in its OFF position.
  • the first lever 21 After the first lever 21 has lost its support at the half-wave and begins to pivot under the half-wave, also contribute the initiating force F and the force of the second spring 28 to accelerate the first lever 21, so that the shift shaft 9 very quickly in get their OFF position.

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  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Description

Die Erfindung liegt auf dem Gebiet der elektrischen Schalter, die mit einer an einen Antrieb gekoppelten Schaltwelle zum Bewegen zumindest eines bewegbaren Kontaktes ausgerüstet sind, und ist bei der konstruktiven Gestaltung eines Schaltschlosses zum Verklinken der Schaltwelle anwendbar.The invention is in the field of electrical switches, which are equipped with a drive shaft coupled to a drive for moving at least one movable contact, and is applicable to the structural design of a switching mechanism for latching the shift shaft.

Ein bekannter derartiger elektrischer Schalter, bei dem die Schaltwelle über einen Antriebsstrang entgegen der Kraft zumindest einer Feder aus einer AUS-Position in eine EIN-Position überführbar ist, weist ein Schaltschloss auf, bei dem ein an den Antriebsstrang gekoppelter schwenkbarer erster Hebel an einem in einer Verklinkungsstellung gehaltenen Anschlag abgestützt ist. Zum Überführen des Anschlages in eine Freigabestellung, bei der der erste Hebel seine Abstützung an dem Anschlag verliert, sind hierbei zwei Auslösevorgänge vorgesehen. So kann die Überführung des Anschlages in seine Freigabestellung zum einen durch einen "normalen" Auslösevorgang, bei dem der Anschlag direkt betätigt, wird erfolgen. Zum anderen ist bei dem Schaltschloss ein zweiter Hebel vorgesehen ist, der eine dem Anschlag zugeordnete Arbeitsfläche aufweist. Der zweite Hebel ist dabei mittels zumindest einer zweiten Feder in einer ersten Anschlagstellung an dem ersten Hebel gehalten. Beim Schwenken des zweiten Hebels unter der Einwirkung einer initiierenden Kraft, die der Kraft der zweiten Feder entgegenwirkt, wirkt die Arbeitsfläche derart auf den Anschlag, dass der Anschlag - im Zuge eines gegenüber dem "normalen" Auslösevorgang "beschleunigten" Auslösevorganges - in seine Freigabestellung überführt wird ( US 6,018,284 ).A well-known such electrical switch, in which the shift shaft via a drive train against the force of at least one spring from an OFF position can be converted into an ON position, has a switch latch, wherein a coupled to the drive train pivotable first lever on a in a Verklinkungsstellung held stop is supported. For transferring the stop into a release position, in which the first lever loses its support on the stop, in this case two triggering operations are provided. Thus, the transfer of the stop in its release position on the one hand by a "normal" triggering operation, in which the stop is operated directly, will take place. On the other hand, in the switching mechanism, a second lever is provided, which has a working surface associated with the stop. The second lever is held by means of at least one second spring in a first stop position on the first lever. When pivoting the second lever under the action of an initiating force which counteracts the force of the second spring, the work surface acts on the stop so that the stop - in the course of a compared to the "normal" triggering process "accelerated" tripping process - transferred to its release position becomes ( US 6,018,284 ).

Bei diesem bekannten Schaltschloss dienen der zweite Hebel und zwei der zweiten Federn nicht nur zum Schwenken des Anschlages sondern auch zur Kopplung des Antriebsstranges mit dem ersten Hebel. Die Kraft der ersten Feder wirkt daher mittelbar über den zweiten Hebel und die zweiten Federn auf den ersten Hebel. Die Kraft der ersten Feder wirkt sozusagen in Reihe zu der Kraft der zweiten Federn auf den ersten Hebel. Durch die Doppelfunktion des zweiten Hebels und der zweiten Feder ist einerseits das Schwenken des zweiten Hebels und damit der "beschleunigte" Auslösevorgang abhängig vom Bewegungsablauf des Antriebsstranges und andererseits ist der "normale" Auslösevorgang abhängig von der Ausgestaltung des zweiten Hebels und der zweiten Federn.In this known switching lock serve the second lever and two of the second springs not only for pivoting the stop but also for coupling the drive train with the first lever. The force of the first spring therefore acts indirectly on the second lever and the second springs on the first lever. The force of the first spring acts, so to speak, in series with the force of the second springs on the first lever. Due to the dual function of the second lever and the second spring on the one hand, the pivoting of the second lever and thus the "accelerated" release operation depends on the movement of the drive train and on the other hand, the "normal" release operation is dependent on the configuration of the second lever and the second springs.

Ausgehend von einem Schaltschloss mit den Merkmalen des Oberbegriffes des Anspruches 1 ( US 6,018,284 ) liegt der Erfindung die Aufgabe zugrunde, den durch ein Schwenken des zweiten Hebels bewirkten "beschleunigten" Auslösevorgang noch schneller zu gestalten.Starting from a switching mechanism with the features of the preamble of claim 1 ( US 6,018,284 ), the invention is based on the object to make the caused by a pivoting of the second lever "accelerated" tripping faster.

Gemäß der Erfindung wird diese Aufgabe dadurch gelöst, dass die Kräfte der beiden Federn unabhängig voneinander auf den ersten Hebel wirken.According to the invention, this object is achieved in that the forces of the two springs act independently of each other on the first lever.

Aufgrund einer derartigen Gestaltung kann sichergestellt werden, dass die zweite Feder nicht zur Kopplung des ersten Hebels mit dem Antriebsstrang dient. Die Kraft der zweiten Feder wirkt dabei sozusagen nicht in Reihe sondern parallel zu der Kraft der ersten Feder auf den ersten Hebel. Diese Ausgestaltung hat den Vorteil, dass zum Bereitstellen der initiierenden Kraft zum Schwenken des ersten Hebels ein initiierendes Mittel oder ein initiierender Mechanismus gewählt werden kann, der Übertragungsglieder des Antriebsstranges bzw. der Kopplung des Antriebsstranges mit dem ersten Hebel derart "überspringt" dass der zweite Hebel schneller als bei dem aus der Druckschrift US- 6,018,284 bekannten Schaltschloss schwenkt. Diese Ausgestaltung hat weiterhin den Vorteil, dass der durch Betätigen des Anschlages mittels eines Auslösestranges bewirkte "normale" Auslösevorgang im Wesentlichen nicht von der Ausgestaltung des zweiten Hebels und der Ausgestaltung der zweiten Feder abhängt.Due to such a design can be ensured that the second spring is not used to couple the first lever to the drive train. The force of the second spring acts, so to speak, not in series but parallel to the force of the first spring on the first lever. This embodiment has the advantage that, to provide the initiating force for pivoting the first lever, an initiating means or initiating mechanism is selected can, the transfer elements of the drive train or the coupling of the drive train with the first lever so "skips" that the second lever faster than that of the publication US 6,018,284 known switching mechanism pivots. This refinement furthermore has the advantage that the "normal" triggering process effected by actuating the stop by means of a triggering strand essentially does not depend on the design of the second lever and the configuration of the second spring.

Mit Vorteil ist bei einer weiteren Ausgestaltung der Erfindung vorgesehen, dass der zweite Hebel an dem ersten Hebel schwenkbar gelagert ist und die Bewegungsbahn des zweiten Hebels durch zwei Anschlagflächen des ersten Hebels begrenzt ist. - Bei einer derartigen Ausgestaltung wird der Bewegungsablauf des zweiten Hebels nur durch die konstruktive Gestaltung des ersten Hebels und durch die initiierende Kraft nicht jedoch durch weitere Teile des Antriebsstranges oder der Kopplung des Antriebsstranges mit dem ersten Hebel bestimmt. Der zweite Hebel kann daher bereits vor dem Zusammenbau des Schaltschlosses zu einer baulichen Einheit mit dem ersten Hebel vereinigt werden, die ein kräftemäßig geschlossenes System bildet. In der ersten Anschlagstellung beeinflußt die Kraft der zweiten Feder daher nicht die Kraft, mit der der erste Hebel an dem Anschlag anliegt. Dadurch kann eine geringere Toleranzweite der Kraft, unter der der erste Hebel an dem Anschlag anliegt, als auch eine geringere Toleranzweite der Auslösekraft des "normalen" Auslösevorganges vorgesehen werden. - Bekannte gattungsgemäße Schaltschlösser können konstruktiv auf einfache Weise gemäß der Erfindung umgestaltet werden.Advantageously, it is provided in a further embodiment of the invention that the second lever is pivotally mounted on the first lever and the movement path of the second lever is limited by two stop surfaces of the first lever. - In such an embodiment, the movement of the second lever is determined only by the structural design of the first lever and the initiating force but not by other parts of the drive train or the coupling of the drive train with the first lever. The second lever can therefore be combined before the assembly of the switching mechanism to a structural unit with the first lever, which forms a closed-system power. Therefore, in the first stop position, the force of the second spring does not affect the force with which the first lever bears against the stop. As a result, a smaller tolerance width of the force, under which the first lever rests against the stop, as well as a smaller tolerance range of the tripping force of the "normal" tripping operation can be provided. Known generic switching locks can be structurally converted in a simple manner according to the invention.

Zum Schwenken des zweiten Hebels kann beispielsweise die initiierende Kraft eines Magnetauslösers oder die Kraft eines Federspeichers dienen.For pivoting the second lever can serve, for example, the initiating force of a magnetic release or the force of a spring accumulator.

Um den zweiten Hebel möglichst schnell schwenken zu können ist es vorteilhaft, wenn die Schwenkachsen der beiden Hebel zueinander beabstandet angeordnet sind.In order to pivot the second lever as quickly as possible, it is advantageous if the pivot axes of the two levers are arranged spaced from each other.

Ein Ausführungsbeispiel des neuen Schaltschlosses ist in den Figuren 1 bis 4 dargestellt. Dabei zeigen:

  • Figur 1 eine schematische Darstellung eines elektrischen Schalters mit einem Schaltschloss,
  • Figur 2 eine perspektivische Ansicht des Schaltschlosses, in einer ersten Anschlagstellung,
  • Figur 3 die Ansicht gemäß der Figur 2 in Schnittdarstellung und
  • Figur 4 eine Schnittdarstellung des Schaltschlosses in einer zweiten Anschlagstellung.
An embodiment of the new switching mechanism is in the FIGS. 1 to 4 shown. Showing:
  • FIG. 1 a schematic representation of an electrical switch with a switching mechanism,
  • FIG. 2 a perspective view of the switching mechanism, in a first stop position,
  • FIG. 3 the view according to the FIG. 2 in sectional view and
  • FIG. 4 a sectional view of the switching mechanism in a second stop position.

Die Figur 1 zeigt einen elektrischen Schalter 1 in Form eines Niederspannungs-Leistungsschalter mit einem Schaltkontaktsystem und einer zugeordneten Lichtbogen-Löschkammer 2. Das Schaltkontaktsystem besteht aus einer feststehenden Schaltkontaktanordnung 3 und einer beweglichen Schaltkontaktanordnung 4. Die bewegliche Schaltkontaktanordnung 4 weist dabei einen schwenkbaren Kontaktträger 5 und mehrere Kontakthebel 6 auf, wobei die Kontakthebel 6 parallel zueinander schwenkbar und mittels erster Federn 7 unter Vorspannung federnd an dem Kontaktträger 5 abgestützt sind. Die bewegliche Schaltkontaktanordnung 4 ist in bekannter Weise über eine in der Figur 1 nur schematisch angedeutete Hebelanordnung 8 (vgl. auch Figur 2) mit einer Schaltwelle 9 gekoppelt. Die Schaltwelle 9 dient gleichzeitig zum Antrieb nicht weiter dargestellter, parallel zu dem gezeigten Schaltkontaktsystem angeordneter weiterer Schaltkontaktsysteme. Sie ist mittels einer Antriebsvorrichtung 12 aus einer AUS-Postion, bei der das Schaltkontaktsystem offen ist, in eine EIN-Position, bei der das Schaltkontaktsystem geschlossen ist, zu überführen. Beim Überführen der Schaltwelle 9 in ihre EIN-Position werden die ersten Federn 7 weiter gespannt, so dass die Kraft der ersten Federn 7 in die zur AUS-Position weisende Schwenkrichtung 13 der Schaltwelle 9 wirkt. Die Antriebsvorrichtung 12 weist einen mit einem Federspeicher 18 versehenen Antrieb 19, einen den Antrieb 19 mit der Schaltwelle 9 koppelnden Antriebsstrang 15 und ein Schaltschloss 17 auf. Das Schatschloss 17 weist in bekannter Weise zwei Verklinkungseinrichtungen auf, von denen eine erste zum Verklinken des gespannten Federspeichers 18 und die zweite zum Verklinken der entgegen der Kraft der ersten Federn 7 in ihre EIN-Position überführte Schaltwelle 9 dient.The FIG. 1 shows an electrical switch 1 in the form of a low-voltage circuit breaker with a switching contact system and an associated arc quenching chamber 2. The switching contact system consists of a fixed switching contact arrangement 3 and a movable switching contact arrangement 4. The movable switching contact arrangement 4 has a pivotable contact carrier 5 and a plurality of contact lever. 6 on, wherein the contact lever 6 are pivotable parallel to each other and resiliently supported by means of first springs 7 under bias to the contact carrier 5. The movable switching contact arrangement 4 is in a known manner via a in the FIG. 1 only schematically indicated lever assembly 8 (see also FIG. 2 ) coupled to a switching shaft 9. The shift shaft 9 at the same time serves to drive not further shown, arranged parallel to the switching contact system shown further switching contact systems. It is by means of a drive device 12 from an OFF position, in which the switch contact system is open, in an ON position, in which the switch contact system is closed to transfer. When transferring the switching shaft 9 in its ON position, the first springs 7 are further tensioned, so that the force of the first spring 7 acts in the direction of the OFF position pivoting direction 13 of the switching shaft 9. The drive device 12 has a drive 19 provided with a spring accumulator 18, a drive train 15 which couples the drive 19 to the shift shaft 9, and a switching mechanism 17. The dial lock 17 has in a known manner on two latching devices, of which a first for latching the tensioned spring memory 18 and the second for latching against the force of the first spring 7 converted into its ON position switching shaft 9 is used.

Gemäß der Figur 2 weist die zweite Verklinkungseinrichtung des Schaltschlosses einen an den Antriebsstrang 15 gekoppelten ersten Hebel 21, einen zweiten Hebel 22 sowie einen als Halbwelle ausgebildeten Anschlag 23 auf. Der erste Hebel 21 besteht aus zwei parallel zueinander in einem Abstand zueinander angeordneten Teilhebeln und ist um ein erstes Schwenklager 25 schwenkbar, das an einer Trageinrichtung 14 für die Antriebsvorrichtung 12 ortsfest gehaltenen ist. Der erste Hebel liegt bei verklinkter EIN-Position der Schaltwelle 9 mit einer Verklinkungsfläche 24 unter der Kraft der ersten Federn 7 an dem Anschlag 23 an. Bei einem "normalen" Auslösevorgang erfolgt eine Betätigung des Anschlages 23 über einen nicht dargestellten Auslösestrang beispielsweise von Hand mittels einer frontseitig am Schalter angeordneten Drucktaste 10 oder durch einen Elektromagnet 11. Der zweite Hebel 22 ist um ein zweites Schwenklager 26 schwenkbar, wobei das zweite Schwenklager 26 von einem Bolzen gebildet ist, der an seinen Enden von den beiden Teilhebeln des ersten Hebels 21 gehalten ist. Um den zweiten Hebel 22 in einer Anschlagstellung an dem ersten Hebel 21 zu halten ist zum einen eine als Relativ-Feder zwischen den beiden Hebeln 21 und 22 angeordnete zweite Feder 28 und zum anderen eine Stift-Langloch-Verbindung vorgesehen. Dabei greift ein an dem ersten Hebel 21 ausgebildeter Stift 29 in ein in dem zweiten Hebel ausgebildetes Langloch 30 ein, wobei die beiden Enden des Langloches jeweils eine Anschlagfläche 31 und 32 für den Stift 29 bilden. Das eine Ende 35 der zweiten Feder 28 übergreift eine Nase 36 des zweiten Hebels 22. Das andere Ende 37 der zweiten Feder 28 ist an Vorsprüngen 38 der Teilhebel des ersten Hebels 21 abgestützt.According to the FIG. 2 The second latching device of the switch lock has a first lever 21 coupled to the drive train 15, a second lever 22 and a stop 23 configured as a half shaft. The first lever 21 consists of two parallel to each other at a distance from each other arranged partial levers and is pivotable about a first pivot bearing 25 which is held stationary on a support means 14 for the drive device 12. The first lever is in latched ON position of the shift shaft 9 with a Verklinkungsfläche 24 under the force of the first spring 7 on the stop 23 at. In a "normal" triggering operation, the stopper 23 is actuated via a triggering strut (not shown), for example by hand, by means of a pushbutton 10 or arranged on the front of the switch by an electromagnet 11. The second lever 22 is pivotable about a second pivot bearing 26, wherein the second pivot bearing 26 is formed by a bolt which is held at its ends by the two partial levers of the first lever 21. In order to hold the second lever 22 in a stop position on the first lever 21 is provided on the one hand as a relative spring between the two levers 21 and 22 arranged second spring 28 and on the other a pin-slot connection. In this case, a trained on the first lever 21 pin 29 engages in a formed in the second lever slot 30, wherein the two ends of the elongated hole each form a stop surface 31 and 32 for the pin 29. The one end 35 of the second spring 28 engages over a lug 36 of the second lever 22. The other end 37 of the second spring 28 is supported on projections 38 of the partial levers of the first lever 21.

Gemäß der Figur 3 liegt bei der ersten Anschlagstellung des zweiten Hebels 22 an dem ersten Hebel 21 eine erste der beiden Anschlagflächen 31 des Langloches 30 unter der Kraft der zweiten Feder 28 an dem Stift 29 an. Dabei befindet sich eine rampenartige Arbeitsfläche 40 des zweiten Hebels 22 unterhalb des als Halbwelle ausgebildeten Anschlages 23 ohne diesen kräftemäßig zu beeinflussen. Im Falle eines Kurzschlusses wirkt ein als schneller Magnetauslöser ausgebildetes initierendes Mittel 41 mit einer initiierenden Kraft F direkt auf eine Betätigungsfläche des zweiten Hebels. Die initiierende Kraft F kann jedoch auch durch andere initiierende Mittel oder Mechanismen, beispielsweise durch einen Federspeicher bereitgestellt werden.According to the FIG. 3 is located at the first stop position of the second lever 22 on the first lever 21, a first of the two stop surfaces 31 of the elongated hole 30 under the force of the second spring 28 on the pin 29 at. Here is a ramp-like work surface 40 of the second lever 22 below the designed as a half-wave stop 23 without affecting these forces. In the case of a short circuit, an initiating means 41, which is designed as a fast magnetic release, acts with an initiating force F directly on an actuating surface of the second lever. However, the initiating force F may also be provided by other initiating means or mechanisms, for example by a spring accumulator.

Gemäß der Figur 4 wird der zweite Hebel 22 unter der initiierenden Kraft F des initiierenden Mittels 41 entgegen der Kraft der zweiten Feder 28 derart entgegen dem Uhrzeigersinn geschwenkt, dass seine rampenartige Arbeitsfläche 40 an der flachen Unterseite 42 der Halbwelle entlang gleitet und dabei die Halbwelle im Uhrzeigersinn dreht und in ihre Freigabestellung überführt. In der Freigabestellung der Halbwelle verlieren der erste Hebel 21, der Antriebsstrang 15 und die Schaltwelle 9 ihre Abstützung an der Halbwelle und die Schaltwelle 9 wird unter der Kraft der ersten Federn 7 in ihre AUS-Position überführt. Nachdem der erste Hebel 21 seine Abstützung an der Halbwelle verloren hat und beginnt unter der Halbwelle hindurch zu schwenken , tragen auch die initiierende Kraft F und die Kraft der zweiten Feder 28 zur Beschleunigung des ersten Hebels 21 bei, so dass die Schaltwelle 9 sehr schnell in ihre AUS-Position gelangt.According to the FIG. 4 is the second lever 22 under the initiating force F of the initiating means 41 against the force of the second spring 28 in such a counterclockwise direction pivoted that its ramp-like work surface 40 slides along the flat bottom 42 of the half-wave while rotating the half-wave clockwise and transferred to its release position. In the release position of the half-wave, the first lever 21, the drive train 15 and the shift shaft 9 lose their support to the half-wave and the shift shaft 9 is transferred under the force of the first spring 7 in its OFF position. After the first lever 21 has lost its support at the half-wave and begins to pivot under the half-wave, also contribute the initiating force F and the force of the second spring 28 to accelerate the first lever 21, so that the shift shaft 9 very quickly in get their OFF position.

Abhängig von den Wirkrichtungen der Kraft der zweiten Feder 28 und der initiierenden Kraft F in Bezug auf das Schwenklager 25 des ersten Hebels 21 und abhängig von dem Wert der Kraft der zweiten Feder 28 und der Lage der zweiten Anschlagfläche 32 ist das den ersten Hebel 21 beschleunigende Moment steuerbar.Depending on the directions of action of the force of the second spring 28 and the initiating force F with respect to the pivot bearing 25 of the first lever 21 and the value of the force of the second spring 28 and the position of the second stop surface 32 that is the first lever 21 accelerating Moment controllable.

Claims (6)

  1. Latching mechanism (17) for locking an actuating shaft (9) of an electrical switch (1), which can be transferred from an OFF position into an ON position by means of a drive train (15) counter to the force of at least one first spring (7), in its ON position,
    in which latching mechanism a first lever (21) pivotably coupled to the drive train (15) is supported against a stop (23) held in a locking position, and
    which latching mechanism is provided with a second lever (22), which has a working surface (40) assigned to the stop (23),
    the second lever (22) being held in a stop position against the first lever (21) by means of at least one second spring (28) and,
    when the second lever (22) pivots under the action of an initiating force (F), which opposes the force of the second spring (28), the working surface (40) acting in such a way on the stop (23) that the stop (23) is transferred into a release position,
    characterized in that the forces of the two springs (7, 28) act independently of one another on the first lever (21).
  2. Latching mechanism according to Claim 1, characterized in that the second lever (22) is pivotably mounted on the first lever (21) and the path of movement of the second lever (22) is limited by two stop surfaces (31, 32) of the first lever (21).
  3. Latching mechanism according to either of Claims 1 and 2, characterized in that the force (F) of a magnetic trigger serves for the pivoting of the second lever (22).
  4. Latching mechanism according to either of Claims 1 and 2, characterized in that the force (F) of a spring store serves for the pivoting of the second lever (22).
  5. Latching mechanism according to one of Claims 1 to 4, characterized in that the pivot axes (25, 26) of the two levers (21, 22) are arranged at a distance from one another.
  6. Electrical switch (1), in particular a low-voltage circuit breaker, with an actuating shaft (9) for moving at least one movable switching contact arrangement (4), with a drive (19) and with a drive train (15) coupling the drive to the actuating shaft, characterized in that a latching mechanism (17) according to one of Claims 1 to 5 is provided for locking the actuating shaft (9).
EP04090097A 2003-04-30 2004-03-10 Latch mechanism for locking a switch axis and electrical switch with such a latch mechanism Expired - Lifetime EP1473754B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10320681A DE10320681B4 (en) 2003-04-30 2003-04-30 Switch lock for latching a selector shaft and electrical switch with such a switch lock
DE10320681 2003-04-30

Publications (3)

Publication Number Publication Date
EP1473754A2 EP1473754A2 (en) 2004-11-03
EP1473754A3 EP1473754A3 (en) 2006-05-10
EP1473754B1 true EP1473754B1 (en) 2011-10-12

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Application Number Title Priority Date Filing Date
EP04090097A Expired - Lifetime EP1473754B1 (en) 2003-04-30 2004-03-10 Latch mechanism for locking a switch axis and electrical switch with such a latch mechanism

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US (1) US7038155B2 (en)
EP (1) EP1473754B1 (en)
DE (1) DE10320681B4 (en)

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CN104377087B (en) * 2013-08-16 2017-04-19 上海良信电器股份有限公司 Circuit breaker switching-on and switching-off association mechanism
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Also Published As

Publication number Publication date
DE10320681A1 (en) 2004-12-02
EP1473754A2 (en) 2004-11-03
US7038155B2 (en) 2006-05-02
US20040263294A1 (en) 2004-12-30
DE10320681B4 (en) 2006-10-19
EP1473754A3 (en) 2006-05-10

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