EP1173868B1 - Circuit breaker, for example automatic cutout - Google Patents

Circuit breaker, for example automatic cutout Download PDF

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Publication number
EP1173868B1
EP1173868B1 EP00929304A EP00929304A EP1173868B1 EP 1173868 B1 EP1173868 B1 EP 1173868B1 EP 00929304 A EP00929304 A EP 00929304A EP 00929304 A EP00929304 A EP 00929304A EP 1173868 B1 EP1173868 B1 EP 1173868B1
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EP
European Patent Office
Prior art keywords
contact arm
contact
switch unit
unit according
axle bearing
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
EP00929304A
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German (de)
French (fr)
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EP1173868A1 (en
Inventor
Gunther Eckert
Elmar Fischer
Christoph Weber
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Siemens AG
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Siemens AG
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Filing date
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Priority to SI200030054T priority Critical patent/SI1173868T1/en
Publication of EP1173868A1 publication Critical patent/EP1173868A1/en
Application granted granted Critical
Publication of EP1173868B1 publication Critical patent/EP1173868B1/en
Anticipated expiration legal-status Critical
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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
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/046—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H using snap closing mechanisms
    • H01H2300/048—Snap closing by latched movable contact, wherein the movable contact is held in a minimal distance from the fixed contact during first phase of closing sequence in which a closing spring is charged
    • 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
    • H01H71/04—Means for indicating condition of the switching device

Definitions

  • the invention relates to a protective switching device, for example, on a circuit breaker whose Switch lock between a hand control and at least one movable contact arm at a latching point between a pawl and a release lever by a release device can be released (see e.g. DE-A-19 04 731).
  • switch locks with so-called flying Latching that is to say a portable latching point, the Advantage of more precise guidance and lower friction losses, so that you can get by with lower spring forces.
  • flying Latching that is to say a portable latching point
  • the invention has for its object a protective switching device with compact switch lock and contact arrangement to develop a portable latching point allows.
  • a Protective switching device according to claim 1.
  • the movable Contact arm in a tab on both sides encompassing this Can be moved with the bracket on a first axle bearing and rotatably mounted.
  • the pawl is also mounted off-center.
  • the tab has another axle bearing on both sides, on the off-center the trigger lever is mounted so that it can rotate is.
  • the bracket and the movable also pivot about this axis Contact arm if it is not on a fixed Contact is pending.
  • the first axle bearing limits the switch-off path the contact arm, for example pending the Axis on a housing stop. It is therefore also used as an off-stop designated.
  • the tab forms a stable support element for the jack and Release levers that are in a plane above or below the contact area can be arranged.
  • the stable tab structure enables a quick, low-friction contact opening at one torsion-free movable contact arm. Therefor an elongated hole guide is not required.
  • the asymmetrical structure over several levels has the further significant advantage that reignitions are avoided that occur when a moving contact after switching off on the contact path limiting stroke strikes and bounces back, being approaches the fixed contact of the contact pair again. Since the stop in one plane is off-center to the contact arrangement, so outside the level of the contact arrangement, is arranged, result in a trigger stroke from Impact anchor of a release device torsional vibrations, that have a dampening effect on the switching process.
  • construction combines a stable, torsion-free Guide for the movable contact arm with damping on the other Torsional vibrations when switching off on the release lever. This avoids reignitions.
  • a torsion-free Guiding the contact arm also prevents restless ones Contact layers.
  • the structure over several levels also has the advantage that a compact arrangement of switch lock and contact arm is achieved.
  • the axle bearing for the release lever can be advantageous in terms of the axle bearing for the contact arm on the contact Side of the contact arm can be arranged. Thereby a spring on the contact arm is sufficient to generate the contact force and the tear force at the contact opening. Thereby again, you don't need multiple spring forces that are compensate for different switching sequences and would decrease.
  • the pawl can be spaced in a portable pawl bearing a coupling rod to the bearing for the contact arm Hand control store what the structure of the key switch promotes.
  • the contact arm can advantageously consist of two parts in the axial direction components arranged one above the other are formed.
  • Base part can be made of mechanically strong material and a contact carrier or a contact-forming head region can be made of electrically conductive material be optimized for the protective switching device can.
  • Base part and contact carrier can be in the axial direction overlapping one another, which is a simple Manufacturing enables.
  • a spring switch can be connected to the hand control stand such that when switched on manually a distance giving body with waste edge pulled away between the contact pair is, so that there is a sudden switch-on.
  • Such jumpers are available in different versions known (DE-A-4 016 364). Such switchgear lead to particularly intense switching surges caused by the structure according to the invention are damped.
  • a magnetic release can be arranged so that its plunger, also known as an impact anchor, on the release lever below Formation of a long lever arm attacks.
  • a spring between the Axle bearing for the contact arm and the axle bearing for the Release lever attacks is advantageous.
  • the spring on the is advantageous Side to the hand control and arranged as a tension spring.
  • the contact force is then achieved through this spring and overcome the contact opening force without a counter spring force to have to.
  • the tab can with a switch position indicator be connected.
  • the guidance of the movable contact arm in the tab can between additional guide ribs respectively.
  • FIG. 1 shows an essential assembly of the protective switching device illustrated in perspective. Grips around a tab a movable contact arm on both sides and forms axes for an axle bearing.
  • FIG. 2 shows the assembly according to FIG. 1 in the manner of an exploded view illustrated.
  • FIG. 3 shows a protective switching device with a manual control element, Switch lock and contact arrangement and a plunger one for clarity because the magnetic release is not shown shown in the off position.
  • FIG. 4 the switch-on position is shown in FIG. 3 played.
  • FIG. 5 schematically illustrates a jump activation, with additional components for clarity 3 and 4 are omitted.
  • FIG. 6 shows the representation according to FIGS. 3 and 4 and in connection with a reproduced switching spring Illustrated blow initiation for a release, where the plunger of a magnetic release straight onto the release lever incident.
  • FIG. 7 shows the representation according to FIGS. 3 and 4 reproduced an additional switch position indicator.
  • the protective switching device has a movable contact arm 1 according to FIG 1, in a tab that encompasses this 2 on both sides on a first axle bearing 3 in the kinematics of the key switch with the flap can be moved and is rotatably mounted.
  • the tab 2 has another axle bearing 4 on both sides, on the off center Release lever can be rotatably mounted stationary. Around this further axis also pivots the bracket and the movable one Contact arm if it is not on a fixed Contact 7, according to FIG 3, is present.
  • the first axle bearing 3 limited also the switch-off path of the contact arm 1. Compare 3
  • the switch-off position is shown in FIG.
  • the stationary Axle bearing 4 for the release lever is in terms of portable axle bearing 3 for the contact arm 1 the contacting side of the contact arm.
  • the Contact arm 1 forms with a fixed contact 7 Contact pair.
  • the pawl 6 rests in a portable Pawl bearing 8 spaced from the bearing 3 for the contact arm 1 a coupling rod 9 to a manual control element 10.
  • the contact arm 1 is in two parts in the embodiment in Axial direction formed superimposed components.
  • a base part 11 made of mechanically strong material is on the side with a contact carrier 12 or a contact part forming Head area mechanically firmly connected, for example by Electric spot welding.
  • the electrodynamic release can done by an electromechanical trigger, the Ram 13 is illustrated.
  • FIG. 4 The switch-on position after swiveling the manual control element 10 from the switch-off position according to FIG. 3 is shown in FIG. 4 illustrated.
  • a common electrothermal trigger is in FIG 4 as well as in FIG 3 for clarity not shown.
  • FIG. 6 an am Contact arm 1 engaging spring 14 between the axle bearing 3 for the contact arm and the axle bearing 4 for the release lever 5 shown. It also shows the moment where the plunger 13 on the release lever 5 due to an electrodynamic Triggering hits the unlatching by falling off initiate the pawl 6 from the release lever 5. It is favorable if the plunger 13 on the release lever 5 with formation a long lever arm 15 attacks.
  • FIG. 5 shows an additional snap-action switching device 16 illustrates that with the hand control 10 in connection stands.
  • a distance is given Body 17 with a waste edge 18 between the contact pair 19 pulled away, so that there is a sudden switch-on, where the contact arm on the fixed contact 7 occurs.
  • a jump switch is in various versions known (DE-A-4 016 364).
  • the switching spring 14 is on the side arranged to the hand control 10 and designed as a tension spring.
  • the tab 1 is a Switch position indicator 20 connected. This is a visual indicator 21 under a viewing window 22 in coupling one Switch position swiveled.
  • the movable contact arm can also in the tab 2 are guided by guide ribs 23.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Push-Button Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Breakers (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Keying Circuit Devices (AREA)
  • Lock And Its Accessories (AREA)

Abstract

The invention relates to a circuit breaker, for example an automatic cutout, whose switch latch can be unlatched between a manual command organ (10) and at least one movable contact arm (1) at a latching position between a latch (6) and a trip lever (5) by means of a trip element. According to the invention, the movable contact arm (1) is accommodated in a link (2) that encloses the same on both sides on a first pin bearing (3) in a movable and rotatable manner. Said pin bearing (3) also accommodates the latch (6) off-center and the link (2) has a further pin bearing (4) on both sides. The trip lever (5) is mounted off-center on said pin bearing (4) in a stationary and rotatable manner. The link (2) and the movable contact arm (1), if it does not rest on a stationary contact (7), swivel about said pin bearing. The first pin bearing (3) restricts the cutout travel of the contact arm (1).

Description

Die Erfindung bezieht sich auf eine Schutzschalteinrichtung, beispielsweise auf einen Leitungsschutzschalter, deren Schaltschloß zwischen einem Handbedienorgan und zumindest einem beweglichen Kontaktarm an einer Verklinkungsstelle zwischen einer Klinke und einem Auslösehebel durch eine Auslöseeinrichtung entklinkbar ist (siehe z.B. DE-A-19 04 731).The invention relates to a protective switching device, for example, on a circuit breaker whose Switch lock between a hand control and at least one movable contact arm at a latching point between a pawl and a release lever by a release device can be released (see e.g. DE-A-19 04 731).

Derartige Schutzschalteinrichtungen sind in den vielfältigsten Ausführungen auf dem Markt. Um den verschiedenartigsten Anforderungen in der Praxis zu genügen, wird die Kinematik der Schaltschlösser derartiger Schutzschalteinrichtungen verhältnismäßig kompliziert. Andererseits hat man immer wieder versucht, den Aufbau von Schutzschalteinrichtungen auf einfache Grundformen zurückzuführen, an denen dann doch wieder Verbesserungen erforderlich sind (EP-B-0 299 291). Das bekannte Schaltschloß arbeitet mit Kulissenführungen.Such protective switching devices are in the most varied Finishes on the market. To the most diverse The kinematics will meet requirements in practice the switch locks of such protective switching devices are proportionate complicated. On the other hand, you always have tried to build protective switching devices on simple Basic forms can be traced back to them Improvements are required (EP-B-0 299 291). The known Switch lock works with scenery guides.

Andererseits haben Schaltschlösser mit sogenannter fliegender Verklinkung, also ortsveränderlicher Verklinkungsstelie, den Vorteil einer genaueren Führung und geringerer Reibungsverluste, so daß man mit niedrigeren Federkräften auskommt. Bei einem bekannten kleinen Selbstschalter (DE-A-1 904 731) wird eine ortsveränderliche Verklinkung bei flächig nebeneinander angeordneten Bauelementen erreicht.On the other hand, switch locks with so-called flying Latching, that is to say a portable latching point, the Advantage of more precise guidance and lower friction losses, so that you can get by with lower spring forces. at a known small auto switch (DE-A-1 904 731) a portable latching with side by side arranged components achieved.

Der Erfindung liegt die Aufgabe zugrunde, eine Schutzschalteinrichtung mit kompakter Schaltschloß- und Kontaktanordnung zu entwickeln, die eine ortsveränderliche Verklinkungsstelle ermöglicht.The invention has for its object a protective switching device with compact switch lock and contact arrangement to develop a portable latching point allows.

Die Lösung der geschilderten Aufgabe erfolgt durch eine Schutzschalteinrichtung nach Anspruch 1. Hierbei ist der bewegliche Kontaktarm in einer diesen umgreifenden Lasche beiderseitig an einer ersten Achslagerung mit der Lasche ortsveränderlich und drehbeweglich gelagert. An dieser Achslagerung ist außermittig auch die Klinke gelagert. Die Lasche weist eine weitere beiderseitige Achslagerung auf, an der außermittig der Auslösehebel ortsfest drehbeweglich gelagert ist. Um diese Achse verschwenkt auch die Lasche und der bewegliche Kontaktarm, wenn er nicht an einem feststehenden Kontakt anliegt. Die erste Achslagerung begrenzt den Ausschaltweg des Kontaktarms, beispielsweise unter Anstehen der Achse an einem Gehäuseanschlag. Sie wird daher auch als Aus-Anschlag bezeichnet.The described task is solved by a Protective switching device according to claim 1. Here is the movable Contact arm in a tab on both sides encompassing this Can be moved with the bracket on a first axle bearing and rotatably mounted. At this axle bearing the pawl is also mounted off-center. The tab has another axle bearing on both sides, on the off-center the trigger lever is mounted so that it can rotate is. The bracket and the movable also pivot about this axis Contact arm if it is not on a fixed Contact is pending. The first axle bearing limits the switch-off path the contact arm, for example pending the Axis on a housing stop. It is therefore also used as an off-stop designated.

Die Lasche bildet ein stabiles Tragelement für Klinke und Auslösehebel, die in einer Ebene über oder unter dem Kontaktbereich angeordnet werden können. Der stabile Laschenaufbau ermöglicht eine schnelle reibungsarme Kontaktöffnung bei einem verwindungsfrei geführten beweglichen Kontaktarm. Hierfür wird keine Langlochführung benötigt. Der asymmetrische Aufbau über mehrere Ebenen bewirkt den weiteren wesentlichen Vorteil, daß Rückzündungen vermieden werden, die entstehen, wenn ein Bewegkontakt nach der Abschaltung auf einen den Kontaktweg begrenzenden Anschlag schlägt und zurückprellt, wobei er sich dem feststehenden Kontakt des Kontaktpaars wieder annähert. Da der Aus-Anschlag in einer Ebene außermittig zur Kontaktanordnung, also außerhalb der Ebene der Kontaktanordnung, angeordnet ist, ergeben sich bei einem Auslöseschlag vom Schlaganker einer Auslöseeinrichtung Torsionsschwingungen, die auf den Schaltvorgang dämpfend wirken. Der geschilderte Aufbau vereint also einerseits eine stabile verwindungsfreie Führung für den beweglichen Kontaktarm mit andererseits dämpfenden Torsionsschwingungen beim Ausschalten auf den Auslösehebel. Dadurch werden Rückzündungen vermieden. Eine verwindungsfreie Führung des Kontaktarms verhindert auch unruhige Kontaktlagen. The tab forms a stable support element for the jack and Release levers that are in a plane above or below the contact area can be arranged. The stable tab structure enables a quick, low-friction contact opening at one torsion-free movable contact arm. Therefor an elongated hole guide is not required. The asymmetrical structure over several levels has the further significant advantage that reignitions are avoided that occur when a moving contact after switching off on the contact path limiting stroke strikes and bounces back, being approaches the fixed contact of the contact pair again. Since the stop in one plane is off-center to the contact arrangement, so outside the level of the contact arrangement, is arranged, result in a trigger stroke from Impact anchor of a release device torsional vibrations, that have a dampening effect on the switching process. The one described On the one hand, construction combines a stable, torsion-free Guide for the movable contact arm with damping on the other Torsional vibrations when switching off on the release lever. This avoids reignitions. A torsion-free Guiding the contact arm also prevents restless ones Contact layers.

Andererseits hat der Aufbau über mehrere Ebenen auch den Vorteil, daß eine kompakte Anordnung von Schaltschloß und Kontaktarm erzielt wird.On the other hand, the structure over several levels also has the advantage that a compact arrangement of switch lock and contact arm is achieved.

Die Achslagerung für den Auslösehebel kann vorteilhaft hinsichtlich der Achslagerung für den Kontaktarm auf der kontaktgebenden Seite des Kontaktarms angeordnet werden. Dadurch genügt eine Feder am Kontaktarm zur Erzeugung der Kontaktkraft und der Aufreißkraft bei der Kontaktöffnung. Dadurch benötigt man wiederum nicht mehrere Federkräfte, die sich wiederum bei verschiedenen Schaltabläufen kompensieren und vermindern würden.The axle bearing for the release lever can be advantageous in terms of the axle bearing for the contact arm on the contact Side of the contact arm can be arranged. Thereby a spring on the contact arm is sufficient to generate the contact force and the tear force at the contact opening. Thereby again, you don't need multiple spring forces that are compensate for different switching sequences and would decrease.

Die Klinke kann in einem ortsveränderlichen Klinkenlager beabstandet zum Lager für den Kontaktarm eine Koppelstange zum Handbedienorgan lagern, was den Aufbau des Schaltschlosses fördert.The pawl can be spaced in a portable pawl bearing a coupling rod to the bearing for the contact arm Hand control store what the structure of the key switch promotes.

Der Kontaktarm kann vorteilhaft zweiteilig aus in Achsrichtung übereinander angeordneten Bauteilen gebildet werden. Ein Basisteil kann aus mechanisch festem Material ausgebildet sein und ein Kontaktträger oder ein kontaktbildender Kopfbereich kann aus elektrisch gut leitendem Material ausgeführt sein, das für die Schutzschalteinrichtung optimiert werden kann. Basisteil und Kontaktträger können in Achsrichtung übereinander überlappend angeordnet werden, was eine einfache Herstellung ermöglicht.The contact arm can advantageously consist of two parts in the axial direction components arranged one above the other are formed. On Base part can be made of mechanically strong material and a contact carrier or a contact-forming head region can be made of electrically conductive material be optimized for the protective switching device can. Base part and contact carrier can be in the axial direction overlapping one another, which is a simple Manufacturing enables.

Mit dem Handbedienorgan kann ein Sprungschaltwerk in Verbindung stehen, derart daß beim Einschalten von Hand ein Distanz gebender Körper mit Abfallkante zwischen dem Kontaktpaar weggezogen wird, so daß eine sprunghafte Einschaltung erfolgt. Derartige Sprungschaltwerke sind in verschiedenen Ausführungen bekannt (DE-A-4 016 364). Derartige Sprungschaltwerke führen zu besonders intensiven Schaltstößen, die durch den erfindungsgemäßen Aufbau gedämpft werden. A spring switch can be connected to the hand control stand such that when switched on manually a distance giving body with waste edge pulled away between the contact pair is, so that there is a sudden switch-on. Such jumpers are available in different versions known (DE-A-4 016 364). Such switchgear lead to particularly intense switching surges caused by the structure according to the invention are damped.

Ein Magnetauslöser kann so angeordnet werden, daß sein Stößel, auch als Schlaganker bezeichnet, am Auslösehebel unter Bildung eines langen Hebelarms angreift.A magnetic release can be arranged so that its plunger, also known as an impact anchor, on the release lever below Formation of a long lever arm attacks.

Es ist vorteilhaft, daß am Kontaktarm eine Feder zwischen der Achslagerung für den Kontaktarm und der Achslagerung für den Auslösehebel angreift. Vorteilhaft wird die Feder auf der Seite zum Handbedienorgan angeordnet und als Zugfeder ausgeführt. Man erzielt dann durch diese Feder die Kontaktkraft und die Kontaktöffnungskraft, ohne eine Gegenfederkraft überwinden zu müssen. Die Lasche kann mit einem Schaltstellungsanzeiger verbunden sein. Die Führung des beweglichen Kontaktarms in der Lasche kann zwischen zusätzlichen Führungsrippen erfolgen.It is advantageous that a spring between the Axle bearing for the contact arm and the axle bearing for the Release lever attacks. The spring on the is advantageous Side to the hand control and arranged as a tension spring. The contact force is then achieved through this spring and overcome the contact opening force without a counter spring force to have to. The tab can with a switch position indicator be connected. The guidance of the movable contact arm in the tab can between additional guide ribs respectively.

Die Erfindung soll nun anhand von in der Zeichnung teilweise grob schematisch wiedergegebenen Ausführungsbeispielen näher erläutert werden.The invention will now be based in part on the drawing roughly schematically illustrated exemplary embodiments are explained.

In FIG 1 ist eine wesentliche Baugruppe der Schutzschalteinrichtung perspektivisch veranschaulicht. Eine Lasche umgreift beiderseitig einen beweglichen Kontaktarm und bildet Achsen für eine Achslagerung.1 shows an essential assembly of the protective switching device illustrated in perspective. Grips around a tab a movable contact arm on both sides and forms axes for an axle bearing.

In FIG 2 ist die Baugruppe nach FIG 1 nach Art einer Explosionsdarstellung veranschaulicht.2 shows the assembly according to FIG. 1 in the manner of an exploded view illustrated.

In FIG 3 ist eine Schutzschalteinrichtung mit Handbedienorgan, Schaltschloß und Kontaktanordnung sowie einem Stößel eines der Übersichtlichkeit wegen nicht wiedergegebenen Magnetauslösers in der Ausschaltstellung dargestellt.3 shows a protective switching device with a manual control element, Switch lock and contact arrangement and a plunger one for clarity because the magnetic release is not shown shown in the off position.

In FIG 4 ist in der Darstellungsweise nach FIG 3 die Einschaltstellung wiedergegeben. In FIG. 4, the switch-on position is shown in FIG. 3 played.

In FIG 5 ist eine Sprungeinschaltung schematisch veranschaulicht, wobei der Übersichtlichkeit wegen weitere Bauteile nach den FIG 3 und 4 weggelassen sind.FIG. 5 schematically illustrates a jump activation, with additional components for clarity 3 and 4 are omitted.

In FIG 6 ist in der Darstellungsweise nach den FIG 3 und 4 und in Verbindung mit einer wiedergegebenen Schaltfeder die Schlageinleitung für eine Entklinkung veranschaulicht, wobei der Stößel eines Magnetauslösers gerade auf den Auslösehebel auftrifft.FIG. 6 shows the representation according to FIGS. 3 and 4 and in connection with a reproduced switching spring Illustrated blow initiation for a release, where the plunger of a magnetic release straight onto the release lever incident.

In FIG 7 ist in der Darstellungsweise nach den FIG 3 und 4 eine zusätzliche Schaltstellungsanzeige wiedergegeben.FIG. 7 shows the representation according to FIGS. 3 and 4 reproduced an additional switch position indicator.

Die Schutzschalteinrichtung weist einen beweglichen Kontaktarm 1 nach FIG 1 auf, der in einer diesen umgreifenden Lasche 2 beiderseitig an einer ersten Achslagerung 3 in der Kinematik des Schaltschlosses mit der Lasche ortsveränderlich und drehbeweglich gelagert ist. Die Lasche 2 weist eine weitere beidseitige Achslagerung 4 auf, an der außermittig ein Auslösehebel ortsfest drehbeweglich gelagert werden kann. Um diese weitere Achse verschwenkt auch die Lasche und der bewegliche Kontaktarm, wenn er nicht an einem feststehenden Kontakt 7, nach FIG 3, anliegt. Die erste Achslagerung 3 begrenzt auch den Ausschaltweg des Kontaktarms 1. Man vergleiche die FIG 3.The protective switching device has a movable contact arm 1 according to FIG 1, in a tab that encompasses this 2 on both sides on a first axle bearing 3 in the kinematics of the key switch with the flap can be moved and is rotatably mounted. The tab 2 has another axle bearing 4 on both sides, on the off center Release lever can be rotatably mounted stationary. Around this further axis also pivots the bracket and the movable one Contact arm if it is not on a fixed Contact 7, according to FIG 3, is present. The first axle bearing 3 limited also the switch-off path of the contact arm 1. Compare 3

In FIG 3 ist die Ausschaltstellung wiedergegeben. Die ortsfeste Achslagerung 4 für den Auslösehebel ist hinsichtlich der ortsveränderlichen Achslagerung 3 für den Kontaktarm 1 auf der kontaktgebenden Seite des Kontaktarms angeordnet. Der Kontaktarm 1 bildet mit einem feststehenden Kontakt 7 ein Kontaktpaar. Die Klinke 6 lagert in einem ortsveränderlichen Klinkenlager 8 beabstandet zum Lager 3 für den Kontaktarm 1 eine Koppelstange 9 zu einem Handbedienorgan 10.The switch-off position is shown in FIG. The stationary Axle bearing 4 for the release lever is in terms of portable axle bearing 3 for the contact arm 1 the contacting side of the contact arm. The Contact arm 1 forms with a fixed contact 7 Contact pair. The pawl 6 rests in a portable Pawl bearing 8 spaced from the bearing 3 for the contact arm 1 a coupling rod 9 to a manual control element 10.

Der Kontaktarm 1 ist im Ausführungsbeispiel zweiteilig aus in Achsrichtung übereinander angeordneten Bauteilen gebildet. The contact arm 1 is in two parts in the embodiment in Axial direction formed superimposed components.

Ein Basisteil 11 aus mechanisch festem Material ist seitlich mit einem Kontaktträger 12 bzw. einem Kontaktteil bildenden Kopfbereich mechanisch fest verbunden, beispielsweise durch Elektropunktschweißen. Die elektrodynamische Auslösung kann durch einen elektromechanischen Auslöser erfolgen, dessen Stößel 13 veranschaulicht ist.A base part 11 made of mechanically strong material is on the side with a contact carrier 12 or a contact part forming Head area mechanically firmly connected, for example by Electric spot welding. The electrodynamic release can done by an electromechanical trigger, the Ram 13 is illustrated.

Die Einschaltstellung nach Verschwenken des Handbedienorgans 10 aus der Ausschaltstellung nach FIG 3 ist in FIG 4 veranschaulicht. Ein üblicher elektrothermischer Auslöser ist in FIG 4 ebenso wie in FIG 3 der Übersichtlichkeit wegen nicht dargestellt.The switch-on position after swiveling the manual control element 10 from the switch-off position according to FIG. 3 is shown in FIG. 4 illustrated. A common electrothermal trigger is in FIG 4 as well as in FIG 3 for clarity not shown.

In FIG 6 ist ergänzend zur Darstellung nach FIG 4 eine am Kontaktarm 1 angreifende Feder 14 zwischen der Achslagerung 3 für den Kontaktarm und der Achslagerung 4 für den Auslösehebel 5 dargestellt. Außerdem ist der Moment wiedergegeben, wo der Stößel 13 auf dem Auslösehebel 5 infolge einer elektrodynamischen Auslösung auftrifft, um die Entklinkung durch Abfallen der Klinke 6 vom Auslösehebel 5 einzuleiten. Es ist günstig, wenn der Stößel 13 am Auslösehebel 5 unter Bildung eines langen Hebelarms 15 angreift.In FIG. 6, an am Contact arm 1 engaging spring 14 between the axle bearing 3 for the contact arm and the axle bearing 4 for the release lever 5 shown. It also shows the moment where the plunger 13 on the release lever 5 due to an electrodynamic Triggering hits the unlatching by falling off initiate the pawl 6 from the release lever 5. It is favorable if the plunger 13 on the release lever 5 with formation a long lever arm 15 attacks.

In FIG 5 ist ein zusätzlich vorgesehenes Sprungschaltwerk 16 veranschaulicht, das mit dem Handbedienorgan 10 in Verbindung steht. Beim Einschalten von Hand wird ein Distanz gebender Körper 17 mit einer Abfallkante 18 zwischen dem Kontaktpaar 19 weggezogen, so daß eine sprunghafte Einschaltung erfolgt, bei der der Kontaktarm auf dem feststehenden Kontakt 7 auftritt. Ein derartiges Sprungschaltwerk ist im Prinzip in verschiedenen Ausführungen bekannt (DE-A-4 016 364). Die von einem derartigen Sprungschaltwerk ausgehenden Stoßkräfte werden durch die beschriebene Anordnung von beweglichem Kontaktarm 1, Lasche 2, Auslösehebel 5, Klinke 6 und Aus-Anschlag an der ersten Achslagerung 3 dämpfend abgefangen. Im Ausführungsbeispiel nach FIG 6 ist die Schaltfeder 14 auf der Seite zum Handbedienorgan 10 angeordnet und als Zugfeder ausgeführt.FIG. 5 shows an additional snap-action switching device 16 illustrates that with the hand control 10 in connection stands. When switching on by hand, a distance is given Body 17 with a waste edge 18 between the contact pair 19 pulled away, so that there is a sudden switch-on, where the contact arm on the fixed contact 7 occurs. In principle, such a jump switch is in various versions known (DE-A-4 016 364). The of Such shock switching outgoing shock forces through the described arrangement of movable contact arm 1, tab 2, release lever 5, pawl 6 and off stop the first axle bearing 3 intercepted damping. In the embodiment 6, the switching spring 14 is on the side arranged to the hand control 10 and designed as a tension spring.

Im Ausführungsbeispiel nach FIG 7 ist mit der Lasche 1 ein Schaltstellungsanzeiger 20 verbunden. Hierbei wird ein Sichtzeichen 21 unter einem Sichtfenster 22 in Kopplung einer Schaltstellung verschwenkt.In the exemplary embodiment according to FIG. 7, the tab 1 is a Switch position indicator 20 connected. This is a visual indicator 21 under a viewing window 22 in coupling one Switch position swiveled.

Der bewegliche Kontaktarm kann in der Lasche 2 zusätzlich durch Führungsrippen 23 geführt werden.The movable contact arm can also in the tab 2 are guided by guide ribs 23.

Claims (10)

  1. Protective switch unit, for example a circuit breaker, the latching device of which can be unlatched between a manual control device (10) and at least one movable contact arm (1) at a latching point between a catch (6) and a release lever (5) by a release unit, characterised in that the movable contact arm (1) is located in a surrounding bracket (2) on a first axle bearing (3) so that it can move and rotate with the bracket, with the catch (6) also located off-centre on this axle bearing (3) and that the bracket (2) has a further axle bearing (4) on both sides, on which the release lever (5) is located off-centre in a fixed position but capable of rotation and around which the bracket (2) moves, as does the movable contact arm (1), unless it is in contact with a fixed contact (7), with the first axle bearing (3) limiting the disconnection path of the contact arm (1).
  2. Protective switch unit according to Claim 1, characterised in that the axle bearing (4) for the release lever (5) is located on the contact side of the contact arm (1) in respect of the axle bearing (3) for the contact arm (1).
  3. Protective switch unit according to Claim 1 or 2, characterised in that the catch (6) houses a coupling rod (9) to the manual control device (10) in a movable catch bearing (8) away from the bearing (3) for the contact arm (1).
  4. Protective switch unit according to one of Claims 1 to 3, characterised in that the contact arm (1) is made up of two components connected and overlapping in the axle direction (3;4), a base part (11) made of mechanically strong material and a contact carrier (12) or a contact-forming head area made of a material which is a good electrical conductor.
  5. Protective switch unit according to Claim 3, characterised in that a snap switch (16) is connected to the manual control device (10), such that during manual connection a spacer (17) with a tapered edge (18) is drawn away between the contact pair so that discontinuous connection results.
  6. Protective switch unit according to one of the preceding claims, characterised in that a magnetic release device can act with its ram (13) on the release lever (5) to form a long lever arm (15).
  7. Protective switch unit according to one of the preceding claims, characterised in that a spring (14) between the axle bearing (3) for the contact arm (1) and the axle bearing (4) for the release lever (5) acts on the contact arm (1).
  8. Protective switch unit according to Claim 7, characterised in that the spring (14) is located on the side facing the manual control device (10) and is in the form of a tension spring.
  9. Protective switch unit according to one of the preceding claims, characterised in that a switch position display (20) is connected to the bracket (2).
  10. Protective switch unit according to one of the preceding claims, characterised in that the movable contact arm (1) is guided in the bracket (2) between guide fins (23).
EP00929304A 1999-04-28 2000-04-17 Circuit breaker, for example automatic cutout Expired - Lifetime EP1173868B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200030054T SI1173868T1 (en) 1999-04-28 2000-04-17 Circuit breaker, for example automatic cutout

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19919420A DE19919420A1 (en) 1999-04-28 1999-04-28 Circuit breaker, for example circuit breaker
DE19919420 1999-04-28
PCT/DE2000/001198 WO2000067278A1 (en) 1999-04-28 2000-04-17 Circuit breaker, for example automatic cutout

Publications (2)

Publication Number Publication Date
EP1173868A1 EP1173868A1 (en) 2002-01-23
EP1173868B1 true EP1173868B1 (en) 2002-11-20

Family

ID=7906217

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00929304A Expired - Lifetime EP1173868B1 (en) 1999-04-28 2000-04-17 Circuit breaker, for example automatic cutout

Country Status (8)

Country Link
EP (1) EP1173868B1 (en)
CN (1) CN1210747C (en)
AT (1) ATE228267T1 (en)
BR (1) BR0010136A (en)
DE (2) DE19919420A1 (en)
ES (1) ES2187469T3 (en)
TR (1) TR200103118T2 (en)
WO (1) WO2000067278A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10133878B4 (en) 2001-07-12 2004-07-08 Siemens Ag Switchgear with a key switch
DE10211905A1 (en) * 2002-03-18 2004-04-15 Eti Elektroelement D.D. Miniature circuit breaker with two-pole interruption
DE102005038149A1 (en) * 2005-08-12 2007-02-22 Abb Patent Gmbh Circuit breaker
CN102412099B (en) * 2011-08-08 2014-07-02 山东卓尔电气有限公司 Locking mechanism for electromagnetic switch
CN103000437B (en) * 2011-09-15 2015-09-23 西门子公司 Switching-on mechanism and comprise the isolating switch of this switching-on mechanism
CN103681128B (en) * 2013-12-19 2016-05-18 厦门宏发开关设备有限公司 The switch disconnector that a kind of tape jam is reminded
WO2015103196A1 (en) 2014-01-03 2015-07-09 Electronic Theatre Controls, Inc. Electrical circuit breaker assembly
DE102014106015A1 (en) * 2014-04-29 2015-10-29 Eaton Industries Austria Gmbh switchgear

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Publication number Priority date Publication date Assignee Title
DE1904731C3 (en) * 1969-01-31 1975-11-20 Joseph Dipl.-Ing. 8500 Nuernberg Westermeyer Small electrical self switch
DE3339398A1 (en) * 1983-10-29 1985-05-09 Sursum Elektrizitätsgesellschaft Leyhausen GmbH & Co, 8500 Nürnberg SELF-SWITCH WITH OPEN AND CLOSED CONTACT POSITION
US4825183A (en) * 1984-07-14 1989-04-25 Licentia Patent-Verwaltungs Gmbh Switch latch
TR23732A (en) * 1987-07-13 1990-07-30 Siemens Ag CIRCUIT PROTECTION SWITCH.
DE4016364A1 (en) * 1989-06-30 1991-01-03 Siemens Ag Load breaker switch with spring release latch - uses intermediate element inserted in closure path on movable contact
US5214402A (en) * 1991-12-23 1993-05-25 North American Philips Corporation Trip link latch and interpole link for a circuit breaker
AT404648B (en) * 1992-06-29 1999-01-25 Felten & Guilleaume Ag Oester SELF-SWITCH
FR2766292B1 (en) * 1997-07-16 1999-09-03 Schneider Electric Sa DEVICE FOR CONTROLLING AN ELECTRICAL PROTECTION APPARATUS SUCH AS A CIRCUIT BREAKER INCLUDING A MEANS FOR SIGNALING A TRIGGER, AND CIRCUIT BREAKER PROVIDED WITH SUCH A DEVICE

Also Published As

Publication number Publication date
DE50000796D1 (en) 2003-01-02
BR0010136A (en) 2002-01-22
EP1173868A1 (en) 2002-01-23
WO2000067278A1 (en) 2000-11-09
ES2187469T3 (en) 2003-06-16
TR200103118T2 (en) 2002-04-22
CN1358321A (en) 2002-07-10
CN1210747C (en) 2005-07-13
DE19919420A1 (en) 2000-11-02
ATE228267T1 (en) 2002-12-15

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