EP1405325A1 - Switching device comprising a breaker mechanism - Google Patents

Switching device comprising a breaker mechanism

Info

Publication number
EP1405325A1
EP1405325A1 EP02760086A EP02760086A EP1405325A1 EP 1405325 A1 EP1405325 A1 EP 1405325A1 EP 02760086 A EP02760086 A EP 02760086A EP 02760086 A EP02760086 A EP 02760086A EP 1405325 A1 EP1405325 A1 EP 1405325A1
Authority
EP
European Patent Office
Prior art keywords
housing
switching device
receiving element
bolt
contact arm
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
EP02760086A
Other languages
German (de)
French (fr)
Other versions
EP1405325B1 (en
Inventor
Winfried Vierling
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1405325A1 publication Critical patent/EP1405325A1/en
Application granted granted Critical
Publication of EP1405325B1 publication Critical patent/EP1405325B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure
    • 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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H2071/0292—Housing or frames containing grooves or slots for guiding movable parts

Definitions

  • the invention relates to a switching device with a housing and with a switching lock, which has a release lever, a pawl, a movable contact arm and a deflection axis fixed to the housing.
  • the movable contact arm is provided with a recess in which the deflection axis is arranged, and the pawl is coupled at the end to the movable contact arm by means of a bolt.
  • a switching device in particular a protective switching device, with a switch lock is used, for example, as a circuit breaker.
  • Miniature circuit breakers are overcurrent circuit breakers with a first and a second tripping device that operate on a
  • Switch lock act.
  • An electromagnetic release device acts as a quick release in the event of a short circuit.
  • a thermal bimetallic tripping device switches off in the event of permanent overloads if the affected line heats up excessively.
  • the switch lock can also be operated by means of a manually operated switching knob, which means that the respective circuit breaker can also be used to interrupt a circuit.
  • circuit breaker is from the US
  • This switching device ensures that the contact force between the two contact pieces is kept constant.
  • the constant contact force is also given with a small number of device components, which enables an inexpensive construction of the switch lock and thus of the switching device.
  • the guiding function is given by the bolt, which is slidably guided in a receiving element formed by the housing. Because of this configuration, the contours of the recess in the movable contact arm no longer produce any transverse forces caused by the deflection axis. As a result, a reduction in the contact force and an increase in the device temperature due to friction losses due to lateral force can be avoided.
  • the receiving element is advantageously designed as a molded part of the housing. This is a simple one-piece assembly given that can be manufactured as a cast or pressed part. A cost reduction in the manufacture and assembly of the individual device components is beneficial here.
  • the receiving element is designed as a separate housing part and can be arranged in a variable position in the housing. This can advantageously be adapted to different requirements of the switching device, in particular to the kinematics and the effective forces.
  • the receiving element is preferably designed as an arcuate backdrop, which has an arcuate opening.
  • the resulting movement sequence of the movable contact arm is therefore, depending on the variant of the switching device, inevitably guided and optimized.
  • the recess is advantageously designed to be open or closed, which means further savings potential and one
  • the housing advantageously consists of two housing shells, each with a receiving element, the bolt being guided on both sides. This results in high leadership stability and a precise movement sequence.
  • the housing is preferably made of insulating material.
  • the insulating properties of the insulating material are advantageous to the extent that the existing provisions on protection against accidental contact are sufficient and also cause electrical and thermal decoupling between the device components and groups.
  • FIG. 2 shows a switching device according to FIG. 1 in the contact position
  • FIG. 3 shows a switching device according to FIG. 1 in the on position.
  • the 1 shows a switching device 1 with a housing 2 and a switch lock 3 in the so-called off position AS.
  • the key switch 3 has a release lever 4, a pawl 5, a movable contact arm 6 and a deflection axis 7 fixed to the housing.
  • the contact arm 6 has an approximately mirror-inverted S-shape and is provided with a recess 8 in its component length approximately in the middle, in particular in an aspect ratio of 1: 2, in which the deflection axis 7 is arranged.
  • the recess 8 can be both open and closed and is essentially directed towards the release lever 4 with respect to the component width of the contact arm 6.
  • the recess 8 has an oversize in relation to the deflection axis 7, which makes assembly of the device components easier.
  • the recess 8 is used in conjunction with the deflection axis 7 only to hold the device components together.
  • the deflection axis 7 is largely freely arranged in the recess 8 and, if necessary, fulfills a limiting or deflecting function as a stop.
  • the pawl 5 is coupled at the end by means of a bolt 9 to a first end 10 of the contact arm 6.
  • the bolt 9 is in turn slidably guided in a receiving element 11 formed by the housing 2.
  • the receiving element 11 can also be designed as an arcuate backdrop, the receiving element 11 and possibly the backdrop likewise having an arcuate opening 12.
  • the receiving element 11 can be designed both as a molded part of the housing 2 and as a separate housing part.
  • the separate housing part can be arranged to be movable in the housing 2, so that there is a multitude of design options.
  • the pawl 5 is connected to a bracket 13, which in turn is in operative connection with a toggle roller 14.
  • the housing 2, which is possibly made of insulating material, can consist of two housing shells, each with a receiving element 11, the bolt 9 being guided on both sides.
  • the contact arm 6 has an engagement opening 15 between the recess 8 and the bolt 9 for a tension spring 16 engaging therein.
  • the tension spring 16 is also received in a receiving opening 17 of a holder 18 and is thereby preloaded.
  • the bracket 18 can be mounted or adjusted in a first angular range ⁇ such that different contact spring positions can advantageously be assigned different contact forces, as a result of which definable types of switching devices can be determined.
  • a first contact piece 20 is arranged approximately at the same height as a second contact piece 21.
  • the second contact piece 21 is placed on a fixed contact carrier 22 which is part of a structural unit which is not described in more detail here.
  • the switch lock 3 has, in addition to the deflection axis 7, the receiving element 11, which serves as a rotating and pivoting element for the movable contact arm 6.
  • the guide of the movable contact arm 6 is not given by a combination of deflection axis 7 and recess 8, but by the receiving element 11, its opening 12 and the bolt 9 guided therein. If the toggle roller 14 is actuated in the sense of a switchover from the off position AS to the so-called contact position KS according to FIG. 2, the toggle roller 14 transfers its rotational movement into a translational movement on the bracket 13.
  • the bracket 13 transmits the translation movement a pawl force Kl to the pawl 5, whereupon this causes the contact arm 6 by means of the associated bolt 9 to perform an arcuate pivoting movement. Due to the force of the tension spring 16 by means of a tension spring force K2, the release lever 4 rotates in the same way and thereby causes an increasing overlap with the pawl 5.
  • FIG. 2 shows the switching device 1 according to FIG. 1 in the contact position KS.
  • a temporary intermediate position of the switch lock 3, in which the two contact pieces touch, is referred to as the contact position KS.
  • the bolt 9 slides in the opening 12 of the receiving element 11, which represents an arcuate housing groove.
  • the A fnähmeelement 11 is arranged centrally around the deflection axis 7 of the contact arm 6.
  • the first contact piece 20 belonging to the contact arm 6 rests on the second contact piece 21 without the full contact force K3 being effective.
  • the first angular range ⁇ given by the variable holder 18 forms at a second angular range ⁇ - due to the kinematics of the switching mechanism 3 - at the point of contact of the contact pieces 20, 21.
  • Shear forces acting on the contact arm 6 are conducted via the bolt 9 into the receiving element 11 and not via the deflection axis 7 onto the inner contours of the recess 8.
  • a small radius on the pin 9 favors any friction losses that may occur.
  • Interfering transverse forces are advantageously significantly reduced, so that even with a small number of device components - ie without device components that compensate for tilting moments - there is a constant contact force K3.
  • the power Kungslinien the pawl, the tension spring and the contact Ll, L2 or L3 can no longer be arranged parallel to each other in order to keep any lateral forces that may occur.
  • FIG. 3 shows the switching device 1 according to FIG. 1 in the so-called on position ES.
  • the full contact force K3 acts on the two contact pieces 20, 21, since the pawl 5 largely overlaps and locks with the release lever 6 and the contact arm 6 thereby sets the switch lock 3 into the release position by means of the toggle lever effect.
  • An essential idea of the present idea is to shift the guidance of the movable contact arm from the recess with the deflection axis arranged therein to the bolt guided in the receiving element.

Abstract

The invention relates to a switching device (1) comprising a housing (2) and a breaker mechanism (3), the latter consisting of a trip lever (4), a catch (5), a displaceable contact arm (6) and a deflection shaft (7) that is fixed to the housing. the aim of the invention is to generate a constant contact force (K3). To achieve this, the end of the catch (5) is coupled to the displaceable contact arm (6) by means of a bolt (9). Said bolt (9) is configured to be displaced in a receiving element (11) that is formed by the housing (2).

Description

Beschreibungdescription
Schaltgerät mit einem SchaltschlossSwitchgear with a key switch
Die Erfindung bezieht sich auf ein Schaltgerät mit einem Gehäuse und mit einem Schaltschloss, welches einen Auslösehebel, eine Klinke, einen beweglichen Kontaktarm und eine gehäusefeste Umlenkachse aufweist. Der bewegliche Kontaktarm ist mit einer Aussparung versehen, in der die Umlenkachse an- geordnet ist, und wobei die Klinke mittels eines Bolzens mit dem beweglichen Kontaktarm endseitig gekoppelt ist.The invention relates to a switching device with a housing and with a switching lock, which has a release lever, a pawl, a movable contact arm and a deflection axis fixed to the housing. The movable contact arm is provided with a recess in which the deflection axis is arranged, and the pawl is coupled at the end to the movable contact arm by means of a bolt.
Ein Schaltgerät, insbesondere ein Schutzschaltgerät, mit einem Schaltschloss kommt beispielsweise als Leitungsschutz- Schalter zum Einsatz. Leitungsschutzschalter - auch als LS- Schalter oder Leitungsschutzautomaten bezeichnet - werden heute vorwiegend anstelle von Schmelzsicherungen verwendet.A switching device, in particular a protective switching device, with a switch lock is used, for example, as a circuit breaker. Miniature circuit breakers - also known as miniature circuit breakers or automatic circuit breakers - are mainly used today instead of fuses.
Leitungsschutzschalter sind Überstromschutzschalter mit einer ersten und einer zweiten Auslöseeinrichtung, die auf einMiniature circuit breakers are overcurrent circuit breakers with a first and a second tripping device that operate on a
Schaltschloss wirken. Eine elektromagnetische Auslöseeinrichtung wirkt als Schnellauslösung bei einem Kurzschluss. Eine thermische Bimetall- Auslöseeinrichtung schaltet bei dauerhaften Überlastungen ab, wenn sich die betroffene Leitung un- zulässig erwärmt. Das Schaltschloss lässt sich auch mittels eines manuell betätigbaren Schaltknebels betätigen, wodurch der jeweilige Leitungsschutzschalter auch zum Unterbrechen eines Stromkreises dienen kann.Switch lock act. An electromagnetic release device acts as a quick release in the event of a short circuit. A thermal bimetallic tripping device switches off in the event of permanent overloads if the affected line heats up excessively. The switch lock can also be operated by means of a manually operated switching knob, which means that the respective circuit breaker can also be used to interrupt a circuit.
Ein derartiger Leitungsschutzschalter ist aus der USSuch a circuit breaker is from the US
4,968,863 bekannt. Bei einem Leitungsschutzschalter stellt die Kontaktkraft zwischen einem feststehenden, ersten Kontaktstück und einem auf einem beweglichen Kontaktarm angeordneten, zweiten Kontaktstück einen wesentlichen Parameter dar. Der Leitungsschutzschalter des vorab aufgeführten Standes der Technik weist jedoch eine diesen Parameter ungünstig beeinflussende Konstruktion auf. Der Erfindung liegt daher die Aufgabe zugrunde, ein Schaltgerät anzugeben, bei dem eine konstante Kontaktkraft gegeben sein soll.4,968,863. In the case of a circuit breaker, the contact force between a fixed, first contact piece and a second contact piece arranged on a movable contact arm represents an essential parameter. However, the circuit breaker of the prior art cited above has a construction which adversely affects this parameter. The invention is therefore based on the object of specifying a switching device in which a constant contact force is to be provided.
Diese Aufgabe wird durch ein Schaltgerät der eingangs genannten Art gelöst, bei dem erfindungsgemäß der Bolzen verschiebbar in einem vom Gehäuse gebildeten Aufnahmeelement geführt ist.This object is achieved by a switching device of the type mentioned in the introduction, in which, according to the invention, the bolt is guided displaceably in a receiving element formed by the housing.
Mit diesem Schaltgerät wird erreicht, dass die Kontaktkraft zwischen den beiden Kontaktstücken konstant gehalten ist. Die konstante Kontaktkraft ist zudem bei einer geringen Anzahl der Gerätebauteile gegeben, wodurch eine kostengünstige Konstruktion des Schaltschlosses und somit des Schaltgeräts er- möglicht werden kann.This switching device ensures that the contact force between the two contact pieces is kept constant. The constant contact force is also given with a small number of device components, which enables an inexpensive construction of the switch lock and thus of the switching device.
Die Führungsfunktion ist hierbei durch den Bolzen gegeben, der verschiebbar in einem vom Gehäuse gebildeten Aufnahmeelement geführt ist. Auf Grund dieser Ausgestaltung entstehen an den Konturen der Aussparung des beweglichen Kontaktarms keine durch die Umlenkachse bedingten Querkräfte mehr. Folglich kann eine Verminderung der Kontaktkraft und eine Erhöhung der Gerätetemperatur durch querkraftbedingte Reibungsverluste vermieden werden.The guiding function is given by the bolt, which is slidably guided in a receiving element formed by the housing. Because of this configuration, the contours of the recess in the movable contact arm no longer produce any transverse forces caused by the deflection axis. As a result, a reduction in the contact force and an increase in the device temperature due to friction losses due to lateral force can be avoided.
Darüber hinaus bleibt die konstruktive Gestaltungsfreiheit hinsichtlich der unterschiedlichen Schaltstellungen des Schaltschlosses und angrenzender Gerätebauteile im Schaltgerät von der neuen Ausgestaltung des Schaltschlosses unbe- rührt. Insbesondere kann von einer Berücksichtigung der zueinander weitestgehend parallel auszurichtenden Wirkungslinien der Kräfte des Kontakts, einer Zugfeder und der Klinke abgesehen werden. Ein Element zur Kompensierung ggf. auftretender Querkräfte kann demnach ebenfalls eingespart werden.In addition, the design freedom with regard to the different switching positions of the switch lock and adjacent device components in the switchgear remains unaffected by the new design of the switch lock. In particular, consideration can be given to the fact that the lines of action of the forces of the contact, a tension spring and the pawl have to be aligned as far as possible in parallel. An element for compensating any lateral forces that may occur can therefore also be saved.
Mit Vorteil ist das Aufnahmeelement als Anformteil des Gehäuses ausgebildet. Damit ist eine einfache einstückige Bauein- heit gegeben, die sich als Gieß- oder Pressteil herstellen lässt. Eine Kostenreduzierung bei der Fertigung und der Montage der einzelnen Gerätebauteile kommt hierbei begünstigend zum tragen.The receiving element is advantageously designed as a molded part of the housing. This is a simple one-piece assembly given that can be manufactured as a cast or pressed part. A cost reduction in the manufacture and assembly of the individual device components is beneficial here.
In einer weiteren Ausgestaltung ist das Aufnahmeelement als separates Gehäuseteil ausgebildet und im Gehäuse ortsveränderlich anordbar. Dadurch kann vorteilhaft eine Anpassung an unterschiedliche Anforderungen des Schaltgeräts, insbesondere an die Kinematik und die wirksamen Kräfte, vorgenommen werden.In a further embodiment, the receiving element is designed as a separate housing part and can be arranged in a variable position in the housing. This can advantageously be adapted to different requirements of the switching device, in particular to the kinematics and the effective forces.
Vorzugsweise ist das Aufnahmeelement als bogenförmige Kulisse ausgebildet, welche eine bogenförmige Öffnung aufweist. Der dadurch bedingte Bewegungsablauf des beweglichen Kontaktarms ist demzufolge, je nach Ausführungsvariante des Schaltgeräts, zwangsläufig geführt und optimiert.The receiving element is preferably designed as an arcuate backdrop, which has an arcuate opening. The resulting movement sequence of the movable contact arm is therefore, depending on the variant of the switching device, inevitably guided and optimized.
Mit Vorteil ist die Aussparung offen oder geschlossen ausge- bildet, wodurch ein weiteres Einsparungspotential und eineThe recess is advantageously designed to be open or closed, which means further savings potential and one
Erleichterung bei der Montage der Gerätebauteile, insbesondere des beweglichen Kontaktarms, gegeben ist.Relief in the assembly of the device components, in particular the movable contact arm, is given.
Vorteilhafterweise besteht das Gehäuse aus zwei Gehäusescha- len mit jeweils einem Aufnahmeelement, wobei der Bolzen beid- seitig geführt. Daraus resultieren eine hohe Führungsstabilität und ein präziser Bewegungsablauf.The housing advantageously consists of two housing shells, each with a receiving element, the bolt being guided on both sides. This results in high leadership stability and a precise movement sequence.
Vorzugsweise ist das Gehäuse aus Isolierstoff. Dabei kommen die isolierenden Eigenschaften des Isolierstoffs in soweit vorteilhaft zum tragen, als dass dieser vorhandenen Bestimmungen zum Berührungsschutz genügt und darüber hinaus eine elektrische und thermische Entkopplung zwischen den Gerätebauteilen und -gruppen bewirkt.The housing is preferably made of insulating material. The insulating properties of the insulating material are advantageous to the extent that the existing provisions on protection against accidental contact are sufficient and also cause electrical and thermal decoupling between the device components and groups.
Weitere Vorteile und Details der Erfindung werden nachfolgend beispielhaft anhand der Zeichnung näher erläutert. Es zeigen: FIG 1 ein Schaltgerät mit einem Schaltschloss in der Aus- Stellung,Further advantages and details of the invention are explained in more detail below by way of example with reference to the drawing. Show it: 1 shows a switching device with a switch lock in the off position,
FIG 2 ein Schaltgerät gemäß FIG 1 in der Kontakt-Stellung, und FIG 3 ein Schaltgerät gemäß FIG 1 in der Ein-Stellung.2 shows a switching device according to FIG. 1 in the contact position, and FIG. 3 shows a switching device according to FIG. 1 in the on position.
Im nachfolgenden Text sind gleiche Teile der Figuren mit gleichen Bezugszeichen oder sinngemäß mit ähnlichen Bezugszeichen versehen.In the following text, identical parts of the figures are provided with the same reference symbols or, analogously, with similar reference symbols.
In FIG 1 ist ein Schaltgerät 1 mit einem Gehäuse 2 und einem Schaltschloss 3 in der so genannten Aus-Stellung AS gezeigt. Das Schaltschloss 3 weist einen Auslösehebel 4, eine Klinke 5, einen beweglichen Kontaktarm 6 und eine gehäusefeste Um- lenkachse 7 auf. Der Kontaktarm 6 weist in dieser Ansicht eine annähernd spiegelverkehrte S-Form auf und ist auf seiner Bauteillänge in etwa mittig, insbesondere in einem Längenverhältnis von 1:2, mit einer Aussparung 8 versehen, in der die Umlenkachse 7 angeordnet ist.1 shows a switching device 1 with a housing 2 and a switch lock 3 in the so-called off position AS. The key switch 3 has a release lever 4, a pawl 5, a movable contact arm 6 and a deflection axis 7 fixed to the housing. In this view, the contact arm 6 has an approximately mirror-inverted S-shape and is provided with a recess 8 in its component length approximately in the middle, in particular in an aspect ratio of 1: 2, in which the deflection axis 7 is arranged.
Die Aussparung 8 kann sowohl offen als auch geschlossen ausgeführt sein und ist hinsichtlich der Bauteilbreite des Kontaktarms 6 im wesentlichen zum Auslösehebel 4 hin gerichtet. Die Aussparung 8 weist in Bezug auf die Umlenkachse 7 ein Ü- bermaß auf, wodurch eine erleichterte Montage der Gerätebauteile gegeben ist. Die Aussparung 8 dient in Verbindung mit der Umlenkachse 7 lediglich dem Zusammenhalt der Gerätebauteile. Die Umlenkachse 7 ist weitestgehend frei in der Aussparung 8 angeordnet und erfüllt ggf. als Anschlag eine be- grenzende oder umlenkende Funktion.The recess 8 can be both open and closed and is essentially directed towards the release lever 4 with respect to the component width of the contact arm 6. The recess 8 has an oversize in relation to the deflection axis 7, which makes assembly of the device components easier. The recess 8 is used in conjunction with the deflection axis 7 only to hold the device components together. The deflection axis 7 is largely freely arranged in the recess 8 and, if necessary, fulfills a limiting or deflecting function as a stop.
Die Klinke 5 ist endseitig mittels eines Bolzens 9 an einem ersten Ende 10 des Kontaktarms 6 gekoppelt. Der Bolzen 9 ist seinerseits verschiebbar in einem vom Gehäuse 2 gebildeten Aufnahmeelement 11 geführt. Das Aufnahmeelement 11 kann auch als bogenförmige Kulisse ausgebildet sein, wobei das Aufnahmeelement 11 und ggf. die Kulisse gleichermaßen eine bogenförmige Öffnung 12 aufweisen. Das Aufnahmeelement 11 kann sowohl als Anformteil des Gehäu- ses 2 als auch als separates Gehäuseteil ausgebildet sein. Das separate Gehäuseteil kann im Gehäuse 2 ortsveränderlich angeordnet werden, so dass eine Vielzahl von Gestaltungsmöglichkeiten gegeben ist. An dem der endseitig bolzengekoppelten Seite gegenüberliegenden Ende ist die Klinke 5 mit einem Bügel 13 verbunden, der wiederum mit einer Knebelwalze 14 in Wirkverbindung steht. Das Gehäuse 2, welches ggf. aus Isolierstoff ist, kann aus zwei Gehäuseschalen mit jeweils einem Aufnahmeelement 11 bestehen, wobei der Bolzen 9 beidseitig geführt ist.The pawl 5 is coupled at the end by means of a bolt 9 to a first end 10 of the contact arm 6. The bolt 9 is in turn slidably guided in a receiving element 11 formed by the housing 2. The receiving element 11 can also be designed as an arcuate backdrop, the receiving element 11 and possibly the backdrop likewise having an arcuate opening 12. The receiving element 11 can be designed both as a molded part of the housing 2 and as a separate housing part. The separate housing part can be arranged to be movable in the housing 2, so that there is a multitude of design options. At the end opposite the bolt-coupled side, the pawl 5 is connected to a bracket 13, which in turn is in operative connection with a toggle roller 14. The housing 2, which is possibly made of insulating material, can consist of two housing shells, each with a receiving element 11, the bolt 9 being guided on both sides.
Der Kontaktarm 6 weist zwischen der Aussparung 8 und dem Bolzen 9 eine Eingriffsöffnung 15 für eine darin eingreifende Zugfeder 16 auf. Die Zugfeder 16 ist zudem in einer Aufnahme- Öffnung 17 einer Halterung 18 aufgenommen und erfährt hierbei eine Vorspannung. Die Halterung 18 kann in einem ersten Winkelbereich α derart montiert oder verstellt werden, dass sich vorteilhafterweise unterschiedlichen Zugfederlagen unterschiedliche Kontaktkräfte zuordnen lassen, wodurch definierbare Schaltgerätetypen bestimmbar sind. An einem zweiten Ende 19 des Kontaktarms 6 ist ein erstes Kontaktstück 20 in etwa auf gleicher Höhe zu einem zweiten Kontaktstück 21 angeordnet. Das zweite Kontaktstück 21 ist auf einem Festkontaktträger 22 platziert, der Teil einer hier nicht näher beschriebenen Baueinheit ist.The contact arm 6 has an engagement opening 15 between the recess 8 and the bolt 9 for a tension spring 16 engaging therein. The tension spring 16 is also received in a receiving opening 17 of a holder 18 and is thereby preloaded. The bracket 18 can be mounted or adjusted in a first angular range α such that different contact spring positions can advantageously be assigned different contact forces, as a result of which definable types of switching devices can be determined. At a second end 19 of the contact arm 6, a first contact piece 20 is arranged approximately at the same height as a second contact piece 21. The second contact piece 21 is placed on a fixed contact carrier 22 which is part of a structural unit which is not described in more detail here.
Das Schaltschloss 3 weist im Gegensatz zu einem herkömmlichen Schaltschloss neben der Umlenkachse 7 das Aufnahmeelement 11 auf, welches als Dreh- und Schwenkelement für den beweglichen Kontaktarm 6 dient. Somit ist die Führung des beweglichen Kontaktarms 6 nicht durch eine Kombination aus Umlenkachse 7 und Aussparung 8, sondern durch das Aufnahmeelement 11, deren Öffnung 12 und den darin geführten Bolzen 9, gegeben. Erfolgt eine Betätigung der Knebelwalze 14 im Sinne einer Umschaltung von der Aus-Stellung AS zur so genannten Kontakt- Stellung KS gemäß FIG 2, überträgt die Knebelwalze 14 ihre Rotationsbewegung in eine translatorische Bewegung auf den Bügel 13. Der Bügel 13 gibt seinerseits die Translationsbewegung mittels einer Klinkenkraft Kl an die Klinke 5 weiter, worauf diese den Kontaktarm 6 mittels zugehörigem Bolzen 9 dazu veranlasst eine bogenförmige Schwenkbewegung auszuführen. Durch die Krafteinwirkung der Zugfeder 16 mittels einer Zugfederkraft K2 dreht sich der Auslösehebel 4 gleichermaßen mit und erwirkt dabei eine zunehmende Überdeckung mit der Klinke 5.In contrast to a conventional switch lock, the switch lock 3 has, in addition to the deflection axis 7, the receiving element 11, which serves as a rotating and pivoting element for the movable contact arm 6. Thus, the guide of the movable contact arm 6 is not given by a combination of deflection axis 7 and recess 8, but by the receiving element 11, its opening 12 and the bolt 9 guided therein. If the toggle roller 14 is actuated in the sense of a switchover from the off position AS to the so-called contact position KS according to FIG. 2, the toggle roller 14 transfers its rotational movement into a translational movement on the bracket 13. The bracket 13 in turn transmits the translation movement a pawl force Kl to the pawl 5, whereupon this causes the contact arm 6 by means of the associated bolt 9 to perform an arcuate pivoting movement. Due to the force of the tension spring 16 by means of a tension spring force K2, the release lever 4 rotates in the same way and thereby causes an increasing overlap with the pawl 5.
FIG 2 zeigt das Schaltgerät 1 gemäß FIG 1 in der Kontakt- Stellung KS . Eine temporäre Zwischenstellung des Schaltschlosses 3, bei der sich die beiden Kontaktstücke berühren, ist als Kontakt-Stellung KS bezeichnet. Hierbei gleitet der Bolzen 9 in der Öffnung 12 des Aufnahmeelements 11, die eine bogenförmige Gehäusenut darstellt. Das A fnähmeelement 11 ist zentrisch um die Umlenkachse 7 des Kontaktarms 6 angeordnet. Das dem Kontaktarm 6 zugehörige, erste Kontaktstück 20 liegt auf dem zweiten Kontaktstück 21 auf, ohne dass dabei die volle Kontaktkraft K3 wirksam ist. Der durch die variable Halterung 18 gegebene erste Winkelbereich α bildet sich an einem zweiten Winkelbereich ß - bedingt durch die Kinematik des Schaltschlosses 3 - am Berührpunkt der Kontaktstücke 20,21 ab.2 shows the switching device 1 according to FIG. 1 in the contact position KS. A temporary intermediate position of the switch lock 3, in which the two contact pieces touch, is referred to as the contact position KS. Here, the bolt 9 slides in the opening 12 of the receiving element 11, which represents an arcuate housing groove. The A fnähmeelement 11 is arranged centrally around the deflection axis 7 of the contact arm 6. The first contact piece 20 belonging to the contact arm 6 rests on the second contact piece 21 without the full contact force K3 being effective. The first angular range α given by the variable holder 18 forms at a second angular range β - due to the kinematics of the switching mechanism 3 - at the point of contact of the contact pieces 20, 21.
Auf den Kontaktarm 6 wirkende Querkräfte werden über den Bol- zen 9 in das Aufnahmeelement 11 und nicht über die Umlenkachse 7 auf die Innenkonturen der Aussparung 8 geleitet. Ein kleiner Radius am Bolzen 9 begünstigt ggf. auftretende Reibungsverluste. Vorteilhafterweise werden störende Querkräfte maßgeblich verringert, wodurch selbst bei einer geringen An- zahl von Gerätebauteilen - also ohne Gerätebauteile, die eine Kompensation von Kippmomenten bewirken - eine konstante Kontaktkraft K3 gegeben ist. Darüber hinaus müssen die Kraftwir- kungslinien der Klinke, der Zugfeder und des Kontakts Ll, L2 bzw. L3 nicht mehr parallel zueinander angeordnet sein, um ggf. auftretende Querkräfte klein zu halten.Shear forces acting on the contact arm 6 are conducted via the bolt 9 into the receiving element 11 and not via the deflection axis 7 onto the inner contours of the recess 8. A small radius on the pin 9 favors any friction losses that may occur. Interfering transverse forces are advantageously significantly reduced, so that even with a small number of device components - ie without device components that compensate for tilting moments - there is a constant contact force K3. In addition, the power Kungslinien the pawl, the tension spring and the contact Ll, L2 or L3 can no longer be arranged parallel to each other in order to keep any lateral forces that may occur.
In FIG 3 ist das Schaltgerät 1 gemäß FIG 1 in der so genannten Ein-Stellung ES gezeigt. Hierbei wirkt die volle Kontaktkraft K3 auf die beiden Kontaktstücke 20,21 ein, da sich die Klinke 5 mit dem Auslösehebel 6 weitestgehend überdeckt und verrastet und der Kontaktarm 6 dabei mittels Kniehebeleffekt das Schaltschloss 3 in die Auslösestellung versetzt.3 shows the switching device 1 according to FIG. 1 in the so-called on position ES. Here, the full contact force K3 acts on the two contact pieces 20, 21, since the pawl 5 largely overlaps and locks with the release lever 6 and the contact arm 6 thereby sets the switch lock 3 into the release position by means of the toggle lever effect.
Wesentlicher Gedanke der vorliegenden Idee ist es, die Führung des beweglichen Kontaktarms von der Aussparung mit der darin angeordneten Umlenkachse auf den in dem Aufnahmeelement geführten Bolzen zu verlagern. An essential idea of the present idea is to shift the guidance of the movable contact arm from the recess with the deflection axis arranged therein to the bolt guided in the receiving element.

Claims

Patentansprüche claims
1. Schaltgerät (1) mit einem Gehäuse (2) und mit einem Schaltschloss (3), welches einen Auslösehebel (4), eine Klin- ke (5), einen beweglichen Kontaktarm (6) und eine gehäusefeste Umlenkachse (7) aufweist, wobei der bewegliche Kontaktarm (6) mit einer Aussparung (8) versehen ist, in der die Umlenkachse (7) angeordnet ist, und wobei die Klinke (5) mittels eines Bolzens (9) mit dem beweglichen Kontaktarm (6) endsei- tig gekoppelt ist, d a d u r c h g e k e n n z e i c h n e t, dass der Bolzen (9) verschiebbar in einem vom Gehäuse (2) gebildeten Aufnahmeelement (11) geführt ist.1. switching device (1) with a housing (2) and with a switching lock (3), which has a release lever (4), a latch (5), a movable contact arm (6) and a deflection axis (7) fixed to the housing, wherein the movable contact arm (6) is provided with a recess (8) in which the deflection axis (7) is arranged, and wherein the pawl (5) is coupled on the end side to the movable contact arm (6) by means of a bolt (9) , characterized in that the bolt (9) is slidably guided in a receiving element (11) formed by the housing (2).
2. Schaltgerät nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t, dass das Aufnahmeelement (11) als Anformteil des Gehäuses (2) ausgebildet ist.2. Switching device according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the receiving element (11) is designed as a molded part of the housing (2).
3. Schaltgerät nach einem der Ansprüche 1 oder 2, d a d u r c h g e k e n n z e i c h n e t, dass das Aufnahmeelement (11) als separates Gehäuseteil ausgebildet und im Gehäuse (2) ortsveränderlich anordbar ist.3. Switching device according to one of claims 1 or 2, so that the receiving element (11) is designed as a separate housing part and can be arranged in a variable position in the housing (2).
4. Schaltgerät nach einem der Ansprüche 1,2 oder 3, d a d u r c h g e k e n n z e i c h n e t, dass das Aufnahmeelement (11) als bogenförmige Kulisse ausgebildet ist, welche eine bogenförmige Öffnung (12) aufweist.4. Switching device according to one of claims 1, 2 or 3, so that the receiving element (11) is designed as an arcuate backdrop, which has an arcuate opening (12).
5. Schaltgerät nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t, dass die Aussparung (8) offen oder geschlossen ausgebildet ist.5. Switching device according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the recess (8) is open or closed.
6. Schaltgerät nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t, dass das Gehäuse (2) aus zwei Gehäuseschalen mit jeweils einem Aufnahmeelement (11) besteht, wobei der Bolzen (9) beidseitig geführt ist.6. Switching device according to one of the preceding claims, characterized in that the housing (2) consists of two housing shells, each with a receiving element (11), the bolt (9) being guided on both sides.
7. Schaltgerät nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t, dass das Gehäuse (2) aus Isolierstoff ist. 7. Switching device according to one of the preceding claims, d a d u r c h g e k e n n z e i c h n e t that the housing (2) is made of insulating material.
EP02760086A 2001-07-12 2002-07-05 Switching device comprising a latch mechanism Expired - Fee Related EP1405325B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10133878 2001-07-12
DE10133878A DE10133878B4 (en) 2001-07-12 2001-07-12 Switchgear with a key switch
PCT/DE2002/002476 WO2003007322A1 (en) 2001-07-12 2002-07-05 Switching device comprising a breaker mechanism

Publications (2)

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EP1405325A1 true EP1405325A1 (en) 2004-04-07
EP1405325B1 EP1405325B1 (en) 2004-10-13

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EP02760086A Expired - Fee Related EP1405325B1 (en) 2001-07-12 2002-07-05 Switching device comprising a latch mechanism

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US (1) US7009129B2 (en)
EP (1) EP1405325B1 (en)
CN (1) CN1248276C (en)
DE (2) DE10133878B4 (en)
ES (1) ES2229167T3 (en)
WO (1) WO2003007322A1 (en)

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Also Published As

Publication number Publication date
CN1248276C (en) 2006-03-29
US20040200711A1 (en) 2004-10-14
DE10133878B4 (en) 2004-07-08
ES2229167T3 (en) 2005-04-16
US7009129B2 (en) 2006-03-07
DE50201323D1 (en) 2004-11-18
CN1529895A (en) 2004-09-15
DE10133878A1 (en) 2003-01-30
EP1405325B1 (en) 2004-10-13
WO2003007322A1 (en) 2003-01-23

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