EP0352679B1 - Electrical switchgear - Google Patents

Electrical switchgear Download PDF

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Publication number
EP0352679B1
EP0352679B1 EP89113535A EP89113535A EP0352679B1 EP 0352679 B1 EP0352679 B1 EP 0352679B1 EP 89113535 A EP89113535 A EP 89113535A EP 89113535 A EP89113535 A EP 89113535A EP 0352679 B1 EP0352679 B1 EP 0352679B1
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EP
European Patent Office
Prior art keywords
switching device
switching
holding part
electrical switching
electrical
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
EP89113535A
Other languages
German (de)
French (fr)
Other versions
EP0352679A2 (en
EP0352679A3 (en
Inventor
Rolf Goehle
Volker Schmitt
Karl Heinz Jung
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.)
ABB AG Germany
ABB AB
Original Assignee
Asea Brown Boveri AG Germany
Asea Brown Boveri AB
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Publication date
Application filed by Asea Brown Boveri AG Germany, Asea Brown Boveri AB filed Critical Asea Brown Boveri AG Germany
Publication of EP0352679A2 publication Critical patent/EP0352679A2/en
Publication of EP0352679A3 publication Critical patent/EP0352679A3/en
Application granted granted Critical
Publication of EP0352679B1 publication Critical patent/EP0352679B1/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
    • H01H71/04—Means for indicating condition of the switching device
    • 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
    • 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
    • H01H2071/046—Means for indicating condition of the switching device exclusively by position of operating part, e.g. with additional labels or marks but no other movable indicators

Definitions

  • the invention relates to an electrical switching device, in particular a line switch, according to the preamble of claim 1.
  • the manual control handle assumes two end positions, each of which corresponds to the switching position "ON” or “OFF”.
  • the switch position "OFF” can be achieved both by self-triggering and by manual actuation.
  • larger installation systems with control panels that have a large number of electrical self-switches the problem arises that often not all of them Circuits are switched on and accordingly not all handgrips are in the switched-on position. If there is a fault in a switched-on circuit, which leads to the automatic triggering of the electrical switching device provided for its protection, it is not readily recognizable which switching device is switched off due to the automatic triggering.
  • the object of the invention is to provide a switching device of the type mentioned, in the display of an automatic triggering is effected in a very simple manner.
  • the housing of the switching device is provided with at least one locking cam, which cooperates with a part of the switching mechanism and is used to lock it.
  • the latching can only be released, ie overcome, by manual intervention, namely by operating the manual control handle.
  • the latching cam is preferably arranged in at least one flat shell of the housing of the electrical switching device. It interacts with a toggle lever belonging to the rear derailleur, which is articulated to the manual control handle, in such a way that when the switching device is triggered automatically, the manual control handle is held in an intermediate position, which indicates the automatic triggering, and from which it can only be activated by manual actuation in one of its reached both end positions.
  • the locking cam can be integrally formed on the flat shell.
  • the locking cam is formed on a holding part which is inserted into the flat shell of the housing.
  • the holding part provided with the locking cams is made of elastic material. It is provided that, for example, the holding part designed as a sheet metal strip is provided with equally angled bends at its two ends, the legs of which have different lengths, the shorter leg serving as locking cams and the longer leg being supported on the switching mechanism.
  • a correspondingly shaped part made of insulating material e.g. B. injectable plastic, can be provided as a holding part which is inserted into the housing.
  • the sheet metal strip near the angled portion of the longer leg has two oppositely arranged indentations on its longitudinal edges, which cooperate with holding pins of the switching mechanism or the housing, on which the holding part is centered.
  • a further advantageous development of the invention consists in that the flat shell, which is provided for receiving the holding part, is provided with a groove which serves to guide the holding part.
  • Another development of the invention consists in that the manual shift lever can only be fixed from its intermediate position in one end position and in particular only in the off position.
  • the holding part formed from resilient material is inserted into the half-shell in such a way that the latching lug integrally yields to the actuating forces resulting therefrom when the manual control handle is operated manually, so that the switching mechanism and thus also the manual control handle can reach its end position .
  • Another solution may consist in the fact that the holding part has a slight bend in the area of its longitudinal strip pointing towards the manual control handle towards the switching mechanism, as a result of which the end of the holding part provided with the locking cam protrudes slightly and thus forms a distance from the housing wall which forms when the locking cam is acted upon decreased.
  • FIG. 1 shows the side view of an electrical switching device 10 which has a housing formed from two half-shells 12, of which only one half-shell 12 can be seen here, however.
  • the lifelike representation of the built-in parts of the switching device 10 has been disregarded, ie a manual control handle 14 and a toggle lever 18 associated with the switch mechanism 16 and a movable contact lever 20 coupled to it are shown schematically, while the other built-in parts have been omitted entirely since they are not important for understanding the invention.
  • the switch position shown in FIG. 1 corresponds to the switch-off position of the movable contact lever 20, which assumes a defined end position due to the mechanical coupling with the manual switch handle 14.
  • the movable contact lever 20 corresponds to a fixedly arranged contact piece 22. Furthermore, in the area of the switching mechanism 16 there is a projection serving as latching cam 24, which is arranged such that it cooperates with the switching mechanism 16 in a certain switching position.
  • FIG. 2 shows a longitudinal section through the arrangement according to FIG. 1 along the section line I-I, from which the depth and position of the previously mentioned parts can be seen.
  • toggle lever 18 extends in the thickness direction of the switching device 10 or the half-shell 12 to such an extent that it has a common contact surface with the locking cam 24.
  • FIG. 3 shows the electrical switching device 10 known from FIG. 1 in the switched-on position of its movable contact lever 20, the manual switch handle 14 having assumed its other end position pivoted by approximately 90 ° with respect to the end position shown in FIG. From this view it can be seen that the toggle lever 18 of the switching mechanism 16 assumes a position remote from the locking cam 24.
  • FIG. 5 shows the electrical switching device 10 known from FIGS. 1 and 3, the movable contact lever 20 of which is lifted off the fixed contact piece 22.
  • the hand control handle 14 connected to it via the toggle lever 18 is in an intermediate position which lies between the end positions shown in FIG. 1 and FIG. 3. This is due to the fact that the switching device 10 has triggered automatically as a result of a malfunction, the trigger (not shown here) acting on the switching mechanism in such a way that the toggle lever 18 assumes the position shown in FIG. This ensures, on the one hand, that the movable contact lever 20 lifts off the fixed contact piece 22 and, on the other hand, that the toggle lever 18 bears against the locking cam 24, which prevents the return to the position of the manual control handle 14 shown in FIG. 1.
  • the toggle lever 18 bears against the locking cam 24 in such a way that the aforementioned return to the end position of the manual control handle 14 corresponding to the switch-off position is only possible by its manual actuation.
  • FIG. 7 shows a holding part 21 which is formed from a long strip 23, at the ends of which a short leg 24 and a long leg 25 are angled in the same direction.
  • the short leg 24 serves as a locking cam 24, while the long leg 25 is supported on the rear derailleur 16, not shown here, arranged between the two legs 24, 25.
  • any known switching mechanism can be provided as the switching mechanism 16, in which a toggle lever 18 is coupled to the manual control handle 14 and is acted upon by the trigger in the event of automatic triggering as a result of a fault.
  • a switching mechanism according to German patent application P 33 42 469.1, to which the embodiment of the holding part 21 shown in FIG. 7 is tailored.
  • the function of the holding part 21 is provided in such a way that the toggle lever 18 bears against the locking cam 24 when the automatic triggering takes place by the trigger, not shown in more detail.

Abstract

The invention relates to an electrical switchgear (10), in particular a circuit-breaker, having a housing which is formed by two flat shells (12) and, arranged therein, having a switching mechanism (16) which can be actuated by means of a manual operating handle (14) and acts on a contact lever (20) which assumes two stable switch positions, each switch position of the contact lever (20) corresponding to an end position of the manual operating handle (14). In the case of automatic triggering of the switchgear (10), the manual operating handle (14) assumes an intermediate position between its two end positions and thus indicates the automatically triggered opening of the contacts (20, 22). <IMAGE>

Description

Die Erfindung betrifft ein elektrisches Schaltgerät, insbesondere einen Leitungsschalter, gemäß dem Oberbegriff des Anspruches 1.The invention relates to an electrical switching device, in particular a line switch, according to the preamble of claim 1.

Bei elektrischen Schaltgeräten, die als Selbstschalter ausgebildet sind und in elektrischen Leitungsnetzen installiert sind, muß die Koppelung der beweglichen Kontaktstücke mit den Handschaltgriffen so vorgesehen sein, daß anhand der Stellung des Handschaltgriffs erkennbar ist, welche Schaltstellung der bewegliche Kontakthebel jeweils einnimmt. Mit anderen Worten, es muß anhand der Stellung des Handschaltgriffs ablesbar sein, ob das jeweilige elektrische Schaltgerät ein- oder ausgeschaltet ist.In the case of electrical switching devices which are designed as self-switches and are installed in electrical line networks, the coupling of the movable contact pieces to the manual control handles must be provided in such a way that the position of the manual control handle shows which switching position the movable contact lever occupies. In other words, it must be possible to read from the position of the manual control handle whether the respective electrical switching device is switched on or off.

Bei bekannten elektrischen Schaltgeräten, die den einschlägigen Vorschriften entsprechen müssen, nimmt der Handschaltgriff zwei Endstellungen ein, die jeweils der Schaltstellung "EIN" bzw. "AUS" entsprechen. Dabei kann die Schaltstellung "AUS" sowohl durch Selbstauslösung als auch durch manuelle Betätigung erreicht werden. Bei größeren Installationsanlagen mit Schalttafeln, die eine Vielzahl elektrischer Selbstschalter aufweisen, stellt sich dabei das Problem, daß oftmals nicht sämtliche Stromkreise eingeschaltet sind und sich demgemäß nicht alle Handschaltgriffe sich in Einschaltstellung befinden. Kommt es nun in enem eingeschalteten Stromkreis zu einer Störung, die zur selbsttätigen Auslösung des zu seiner Absicherung vorgesehenen elektrischen Schaltgerätes führt, so ist nicht ohne weiteres erkennbar, welches Schaltgerät infolge selbsttätiger Auslösung abgeschaltet ist.In known electrical switching devices that must comply with the relevant regulations, the manual control handle assumes two end positions, each of which corresponds to the switching position "ON" or "OFF". The switch position "OFF" can be achieved both by self-triggering and by manual actuation. With larger installation systems with control panels that have a large number of electrical self-switches, the problem arises that often not all of them Circuits are switched on and accordingly not all handgrips are in the switched-on position. If there is a fault in a switched-on circuit, which leads to the automatic triggering of the electrical switching device provided for its protection, it is not readily recognizable which switching device is switched off due to the automatic triggering.

Ein elektrisches Schaltgerät der eingangs genannten Art ist aus der US-A 3 089 930 bekannt geworden. Dort ist eine Feder vorgesehen, die den Betätigungsgriff in einer Zwischenstellung entgegen der Kraft einer Rückstellfeder festhält.An electrical switching device of the type mentioned is known from US-A 3,089,930. There a spring is provided which holds the actuating handle in an intermediate position against the force of a return spring.

Eine ähnliche Ausgestaltung ist auch aus der US-A 3 183 325 bekannt geworden.A similar configuration has also become known from US Pat. No. 3,183,325.

Aufgabe der Erfindung ist es, ein Schaltgerät der eingangs genannten Art zu schaffen, bei dem Anzeige einer selbsttätigen Auslösung auf sehr einfache Weise bewirkt wird.The object of the invention is to provide a switching device of the type mentioned, in the display of an automatic triggering is effected in a very simple manner.

Diese Aufgabe wird erfindungsgemäß gelöst durch die Merkmale des Anspruches 1.This object is achieved according to the invention by the features of claim 1.

Danach ist das Gehäuse des Schaltgerätes mit wenigstens einem Rastnocken versehen, der mit einem Teil des Schaltwerkes zusammenarbeitet und zu dessen Verrastung dient. Dabei kann die Verrastung nur durch manuellen Eingriff, nämlich durch Betätigung des Handschaltgriffes gelöst, d. h. überwunden werden. Der Rastnocken ist dabei in bevorzugter Weise in wenigstens einer Flachschale des Gehäuses des elektrischen Schaltgerätes angeordnet. Er wirkt mit einem zum Schaltwerk gehörenden Kniehebel, der mit dem Handschaltgriff gelenkig verbunden ist, derart zusammen, daß bei selbsttätiger Auslösung des Schaltgerätes der Handschaltgriff in einer Zwischenstellung gehalten ist, die die selbsttätige Auslösung anzeigt und aus der er nur mittels manueller Betätigung in eine seiner beiden Endstellungen gelangt.Thereafter, the housing of the switching device is provided with at least one locking cam, which cooperates with a part of the switching mechanism and is used to lock it. The latching can only be released, ie overcome, by manual intervention, namely by operating the manual control handle. The latching cam is preferably arranged in at least one flat shell of the housing of the electrical switching device. It interacts with a toggle lever belonging to the rear derailleur, which is articulated to the manual control handle, in such a way that when the switching device is triggered automatically, the manual control handle is held in an intermediate position, which indicates the automatic triggering, and from which it can only be activated by manual actuation in one of its reached both end positions.

Gemäß einer vorteilhaften Ausgestaltung der Erfindung kann der Rastnocken einstückig an die Flachschale angeformt sein.According to an advantageous embodiment of the invention, the locking cam can be integrally formed on the flat shell.

Gemäß einer bevorzugten Ausgestaltung der Erfindung ist der Rastnocken an ein Halteteil angeformt, welches in die Flachschale des Gehäuses eingelegt ist.According to a preferred embodiment of the invention, the locking cam is formed on a holding part which is inserted into the flat shell of the housing.

In vorteilhafter Weiterbildung der Erfindung ist das mit dem Rastnocken versehene Halteteil aus elastischem Material gefertigt. Dabei ist vorgesehen, daß beispielsweise das als Blechstreifen ausgebildete Halteteil mit jeweils gleichgerichteten Abwinklungen an seinen beiden Enden versehen ist, deren Schenkel unterschiedliche Länge besitzen, wobei der kürzere Schenkel als Rastnocken dient und der längere Schenkel sich am Schaltwerk abstützt. Anstelle eines Blechstreifens kann auch ein entsprechend geformtes Teil aus Isolierwerkstoff, z. B. spritzfähiger Kunststoff, als Halteteil vorgesehen sein, das in das Gehäuse eingesetzt wird.In an advantageous development of the invention, the holding part provided with the locking cams is made of elastic material. It is provided that, for example, the holding part designed as a sheet metal strip is provided with equally angled bends at its two ends, the legs of which have different lengths, the shorter leg serving as locking cams and the longer leg being supported on the switching mechanism. Instead of a sheet metal strip, a correspondingly shaped part made of insulating material, e.g. B. injectable plastic, can be provided as a holding part which is inserted into the housing.

Zur eindeutigen Lagejustierung des Halteteils kann es ferner vorteilhaft sein, daß der Blechstreifen nahe der Abwinklung des längeren Schenkels an seinen Längskanten zwei gegenüberliegend angeordnete Einformungen aufweist, die mit Haltezapfen des Schaltwerks oder des Gehäuses zusammenarbeiten, an denen sich das Halteteil zentriert.For a clear position adjustment of the holding part, it can also be advantageous that the sheet metal strip near the angled portion of the longer leg has two oppositely arranged indentations on its longitudinal edges, which cooperate with holding pins of the switching mechanism or the housing, on which the holding part is centered.

Eine weitere vorteilhafte Weiterbildung der Erfindung besteht darn, daß die Flachschale, die zur Aufnahme des Halteteils vorgesehen ist, mit einer Nut versehen ist, die zur Führung des Halteteils dient.A further advantageous development of the invention consists in that the flat shell, which is provided for receiving the holding part, is provided with a groove which serves to guide the holding part.

Eine andere Weiterbildung der Erfindung besteht darin, daß der Handschalthebel aus seiner Zwischenstellung heraus nur in einer Endstellung und zwar insbesondere nur in der Ausschaltstellung fixierbar ist.Another development of the invention consists in that the manual shift lever can only be fixed from its intermediate position in one end position and in particular only in the off position.

In bevorzugter Ausgestaltung der Erfindung ist vorgesehen, das aus federndem Material gebildete Halteteil derart in die Halbschale einzulegen, daß die daran angeformte Rastnase bei manueller Betätigung des Handschaltgriffs den hiervon ausgehendenden Stellkräften elastisch nachgibt, so daß das Schaltwerk und damit auch der Handschaltgriff seine Endstellung erreichen kann. Hierzu kann es vorteilhaft sein, entweder die in der Halbschale vorgesehene Aufnahmenut hinsichtlich ihrer Tiefe so vorzubereiten, daß genügend Freiraum vorhanden ist, der das Ausweichen des federnden Rastnockens gestattet. Eine andere Lösung kann darin bestehen, daß das Halteteil im Bereich seines Längsstreifens einen leichten zum Handschaltgriff zum Schaltwerk weisenden Knick aufweist, infolge dessen das mit dem Rastnocken versehene Ende des Halteteils geringfügig vorragt und so einen Abstand zur Gehäusewand bildet, der bei Beaufschlagung des Rastnokkens sich verringert.In a preferred embodiment of the invention, it is provided that the holding part formed from resilient material is inserted into the half-shell in such a way that the latching lug integrally yields to the actuating forces resulting therefrom when the manual control handle is operated manually, so that the switching mechanism and thus also the manual control handle can reach its end position . For this purpose, it can be advantageous either to prepare the receiving groove provided in the half-shell with respect to its depth in such a way that there is sufficient free space which allows the resilient locking cam to evade. Another solution may consist in the fact that the holding part has a slight bend in the area of its longitudinal strip pointing towards the manual control handle towards the switching mechanism, as a result of which the end of the holding part provided with the locking cam protrudes slightly and thus forms a distance from the housing wall which forms when the locking cam is acted upon decreased.

Diese und weitere vorteilhafte Ausgestaltungen und Verbesserungen der Erfindung sind in den Unteransprüchen angegeben.These and further advantageous refinements and improvements of the invention are specified in the subclaims.

Anhand eines in der Zeichnung dargestellten Ausführungsbeispieles sollen die Erfindung, vorteilhafte Ausgestaltungen und besondere Vorteile der Erfindung näher erläutert und beschrieben werden.The invention, advantageous refinements and particular advantages of the invention are to be explained and described in more detail using an exemplary embodiment shown in the drawing.

Es zeigen:

Figur 1
Seitenansicht eines geöffneten elektrischen Schaltgerätes mit schematisiert dargestelltem Schaltwerk, Handschaltgriff und Kontaktstelle in Ausschaltstellung,
Figure 2
Längsschnitt durch die Anordnung gemäß Figur 1 entlang der Schnittlinie I-I,
Figur 3
die Anordnung gemäß Figur 2 in Einschaltstellung,
Figur 4
Längsschnitt durch die Anordnung gemäß Figur 3 entlang der Schnittlinie II-II,
Figur 5
die Anordnung gemäß Figur 1 nach selbsttätiger Auslösung,
Figur 6
Längsschnitt durch die Anordnung gemäß Figur 5 entlang der Schnittlinie III-III und
Figur 7
ein in ein Schaltgerät einlegbares Halteteil.
Show it:
Figure 1
Side view of an open electrical switching device with schematically shown switching mechanism, hand control handle and contact point in the off position,
Figure 2
Longitudinal section through the arrangement according to Figure 1 along the section line II,
Figure 3
the arrangement according to Figure 2 in the on position,
Figure 4
Longitudinal section through the arrangement according to Figure 3 along the section line II-II,
Figure 5
the arrangement according to Figure 1 after automatic triggering,
Figure 6
Longitudinal section through the arrangement according to Figure 5 along the section line III-III and
Figure 7
a holding part which can be inserted into a switching device.

In Figur 1 ist die Seitenansicht eines elektrischen Schaltgerätes 10 dargestellt, das ein aus zwei Halbschalen 12 gebildetes Gehäuse aufweist, von denen hier jedoch nur eine Halbschale 12 zu sehen ist.FIG. 1 shows the side view of an electrical switching device 10 which has a housing formed from two half-shells 12, of which only one half-shell 12 can be seen here, however.

Zur Verdeutlichung der Erfindung ist von der naturgetreuen Darstellung der Einbauteile des Schaltgerätes 10 abgesehen worden, d. h. ein Handschaltgriff 14 sowie ein mit diesem verbundene zum Schaltwerk 16 gehöriger Kniehebel 18 und ein mit diesem gekoppelter beweglicher Kontakthebel 20 sind schematisiert dargestellt, während die übrigen Einbauteile ganz weggelassen wurden, da sie für das Verständnis der Erfindung nicht von Belang sind.To clarify the invention, the lifelike representation of the built-in parts of the switching device 10 has been disregarded, ie a manual control handle 14 and a toggle lever 18 associated with the switch mechanism 16 and a movable contact lever 20 coupled to it are shown schematically, while the other built-in parts have been omitted entirely since they are not important for understanding the invention.

Die in der Figur 1 wiedergegebene Schaltstellung entspricht der Ausschaltstellung des beweglichen Kontakthebels 20, wobei aufgrund der mechanischen Kopplung mit dem Handschaltgriff 14 diese eine definierte Endstellung einnimmt.The switch position shown in FIG. 1 corresponds to the switch-off position of the movable contact lever 20, which assumes a defined end position due to the mechanical coupling with the manual switch handle 14.

Der bewegliche Kontakthebel 20 korrespondiert mit einem ortsfest angeordneten Kontaktstück 22. Ferner befindet sich im Bereich des Schaltwerks 16 ein als Rastnocken 24 dienender Vorsprung, der so angeordnet ist, daß er in einer bestimmten Schaltstellung des Schaltwerks 16 mit diesem zusammenarbeitet.The movable contact lever 20 corresponds to a fixedly arranged contact piece 22. Furthermore, in the area of the switching mechanism 16 there is a projection serving as latching cam 24, which is arranged such that it cooperates with the switching mechanism 16 in a certain switching position.

In Figur 2 ist ein Längsschnitt durch die Anordnung gemäß Figur 1 entlang der Schnittlinie I-I dargestellt, aus welchem die Tiefenausdehnung und Lage der zuvor erwähnten Teile erkennbar sind.FIG. 2 shows a longitudinal section through the arrangement according to FIG. 1 along the section line I-I, from which the depth and position of the previously mentioned parts can be seen.

Aus dieser Darstellung ist ferner ersichtlch, daß der Kniehebel 18 sich in Dickenrichtung des Schaltgerätes 10 bzw. der Halbschale 12 soweit erstreckt, daß er mit dem Rastnocken 24 eine gemeinsame Anlagefläche besitzt.From this illustration it is also evident that the toggle lever 18 extends in the thickness direction of the switching device 10 or the half-shell 12 to such an extent that it has a common contact surface with the locking cam 24.

In Figur 3 ist das aus Figur 1 bekannte elektrische Schaltgerät 10 in Einschaltstellung seines beweglichen Kontakthebels 20 dargestellt, wobei der Handschaltgriff 14 seine andere, gegenüber der in Figur 1 dargestellten Endstellung um etwa 90° geschwenkte Endstellung eingenommen hat. Aus dieser Ansicht ist ersichtlich, daß der Kniehebel 18 des Schaltwerks 16 eine vom Rastnocken 24 entfernte Lage einnimmt.FIG. 3 shows the electrical switching device 10 known from FIG. 1 in the switched-on position of its movable contact lever 20, the manual switch handle 14 having assumed its other end position pivoted by approximately 90 ° with respect to the end position shown in FIG. From this view it can be seen that the toggle lever 18 of the switching mechanism 16 assumes a position remote from the locking cam 24.

Die in Figur 4 gezeigte Schnittdarstellung, die der Schnittlinie II-II in Figur 3 folgt, zeigt die aus Figur 3 ersichtlichen Merkmale aus ner um 90° versetzten Ansicht.The sectional view shown in Figure 4, which follows the section line II-II in Figure 3, shows the features shown in Figure 3 from a 90 ° offset view.

In Figur 5 ist das aus Figur 1 und 3 bekannte elektrische Schaltgerät 10 dargestellt, dessen beweglicher Kontakthebel 20 vom festen Kontaktstück 22 abgehoben ist. Der mit ihm über den Kniehebel 18 verbundene Handschaltgriff 14 befindet sich hierbei in eine Zwischenstellung, die zwischen den in Figur 1 bzw. Figur 3 gezeigten Endstellungen liegt. Dies hat seine Ursache darin, daß infolge eines aufgetretenen Störfalls das Schaltgerät 10 selbsttätig ausgelöst hat, wobei der hier nicht dargestellte Auslöser auf das Schaltwerk derart einwirkt, daß der Kniehebel 18 die in Figur 5 gezeigte Position einnimmt. Hierbei ist einerseits sichergestellt, daß der bewegliche Kontakthebel 20 vom festen Kontaktstück 22 abhebt und andererseits, daß sich der Kniehebel 18 am Rastnocken 24 anlegt, der die Rückstellung in die in Figur 1 gezeigte Position des Handschaltgriffs 14 verhindert.FIG. 5 shows the electrical switching device 10 known from FIGS. 1 and 3, the movable contact lever 20 of which is lifted off the fixed contact piece 22. The hand control handle 14 connected to it via the toggle lever 18 is in an intermediate position which lies between the end positions shown in FIG. 1 and FIG. 3. This is due to the fact that the switching device 10 has triggered automatically as a result of a malfunction, the trigger (not shown here) acting on the switching mechanism in such a way that the toggle lever 18 assumes the position shown in FIG. This ensures, on the one hand, that the movable contact lever 20 lifts off the fixed contact piece 22 and, on the other hand, that the toggle lever 18 bears against the locking cam 24, which prevents the return to the position of the manual control handle 14 shown in FIG. 1.

Gemäß der in Figur 6 gezeigten Schnittdarstellung entlang der Schnittlinie III-III in Figur 5 liegt der Kniehebel 18 derart am Rastnocken 24 an, daß die zuvor angesprochene Rückstellung in die der Ausschaltstellung entsprechende Endstellung des Handschaltgriffs 14 nur durch dessen manuelle Betätigung möglich ist.According to the sectional view shown in FIG. 6 along the section line III-III in FIG. 5, the toggle lever 18 bears against the locking cam 24 in such a way that the aforementioned return to the end position of the manual control handle 14 corresponding to the switch-off position is only possible by its manual actuation.

In Figur 7 ist ein Halteteil 21 dargestellt, welches aus einem langen Streifen 23 gebildet ist, an dessen Enden jeweils in gleicher Richtung ein kurzer Schenkel 24 und ein langer Schenkel 25 abgewinkelt sind. Der kurze Schenkel 24 dient hierbei als Rastnocken 24, während sich der lange Schenkel 25 an dem hier nicht dargestellten, zwischen den beiden Schenkeln 24, 25 angeordneten Schaltwerk 16 abstützt.FIG. 7 shows a holding part 21 which is formed from a long strip 23, at the ends of which a short leg 24 and a long leg 25 are angled in the same direction. The short leg 24 serves as a locking cam 24, while the long leg 25 is supported on the rear derailleur 16, not shown here, arranged between the two legs 24, 25.

Zur eindeutigen Lagejustierung dienen zwei Einformungen 26, die nahe dem langen Schenkel in die Seitenkanten des Streifens 23 eingelassen sind. In diese Ausnehmungen greifen Haltenocken des Schaltwerks 16, wodurch das Halteteil 21 in bezug auf seine Lage zum Schaltwerk 16 und dort insbesondere zum Kniehebel 18 zentriert wird.Two indentations 26, which are embedded near the long leg in the side edges of the strip 23, serve for unambiguous position adjustment. Holding cams of the switching mechanism 16 engage in these recesses, as a result of which the holding part 21 is centered with respect to its position relative to the switching mechanism 16 and there in particular to the toggle lever 18.

Als Schaltwerk 16 kann hierbei jedes bekannte Schaltwerk vorgesehen sein, bei dem ein Kniehebel 18 mit dem Handschaltgriff 14 gekoppelt ist und vom Auslöser beaufschlagt wird bei selbsttätiger Auslösung infolge einer Störung. Insbesondere ist jedoch an ein Schaltwerk gemäß der deutschen Patentanmeldung P 33 42 469.1 derart vorgesehen, auf welches die in Figur 7 dargestellte Ausführung des Halteteils 21 zugeschnitten ist.Any known switching mechanism can be provided as the switching mechanism 16, in which a toggle lever 18 is coupled to the manual control handle 14 and is acted upon by the trigger in the event of automatic triggering as a result of a fault. In particular, however, such is provided on a switching mechanism according to German patent application P 33 42 469.1, to which the embodiment of the holding part 21 shown in FIG. 7 is tailored.

Die Funktion des Halteteils 21 ist dabei derart vorgesehen, daß sich der Kniehebel 18 am Rastnocken 24 anlegt, wenn die selbsttätige Auslösung durch den nicht näher dargestellten Auslöser erfolgt. Durch manuelle Betätigung des mit dem Kniehebel 18 gekoppelten Handschaltgriffs 14 kann der Widerstand, der durch den Rastnocken 24 dem Kniehebel 18 entgegenwirkt, überwunden werden, so daß dieser in die in Figur 1 gezeigte Ausschaltstellung gelangt.The function of the holding part 21 is provided in such a way that the toggle lever 18 bears against the locking cam 24 when the automatic triggering takes place by the trigger, not shown in more detail. By manual actuation of the manual control handle 14 coupled to the toggle lever 18, the resistance which counteracts the toggle lever 18 by means of the latching cam 24 can be overcome, so that it reaches the switch-off position shown in FIG. 1.

Diese Funktion wird selbstverständlich auch durch einen ortsfest mit der Gehäusehalbschale 12 verbundenen Rastnocken 24 erreicht. Wesentlich ist, daß jeweils die Rückstellkraft des Schaltgerätes 10 zwar den beweglichen Kontakthebel 20 vom festen Kontaktstück 22 abhebt und den Handschaltgriff 14 aus seiner der Einschaltstellung entsprechenden Endstellung bewegt nicht aber ausreicht, die Verrastung mit dem Rastnocken 24 zu überwinden.This function is of course also achieved by means of a latching cam 24 which is fixedly connected to the housing half-shell 12. It is important that the restoring force of the switching device 10 does indeed lift the movable contact lever 20 from the fixed contact piece 22 and moves the hand control handle 14 from its end position corresponding to the switch-on position, but it is not sufficient to overcome the latching with the latching cam 24.

Claims (7)

  1. Electrical switching device (10), in particular line-protective circuit breaker, having a housing (12) formed from two flat shells (12), having arranged therein a switching mechanism which is coupled to a switching handle (14) and a moving contact lever (20) which assumes two stable switching positions, each switching position of the contact lever (20) corresponding to an end position of the switching handle (14), the switching handle (14) assuming an intermediate position when the electrical switching device (10) trips automatically, which position lies between its end positions and indicates the automatically tripped opening of the contacts (20, 22), characterized in that the housing (12) has a locking stud (24) which interacts with a toggle lever (18), connected in an articulated manner to the switching handle (14), of the switching mechanism (16) and serves as stop surface for said toggle lever for its locking, it being able to overcome the locking by manually actuating the switching handle (14) for its displacement into one of its end positions, and in that the locking stud (24) is preferably arranged in at least one of the flat shells (12).
  2. Electrical switching device according to Claim 1, characterized in that the locking stud (24) is integrally connected to the flat shell (12) or formed onto a holding part (21) which is placed into the flat shell (12) of the housing.
  3. Electrical switching device according to one of Claims 1 and 2, characterized in that the switching hand-lever (14) which is in an intermediate position can be fixed in only one end position, preferably in the switched-off position of the moving contact lever (20).
  4. Electrical switching device according to one of Claims 2 and 3, characterized in that the holding part (21) provided with the locking stud (24) is made from elastic material.
  5. Electrical switching device according to Claim 4, characterized in that the holding part (21) is switched off [sic] on its ends as strip with bent parts (24, 25) which in each case point in the same direction and whose legs (24, 25) have different lengths, the shorter leg serving as locking stud (24) and the longer leg (25) being supported on the switching mechanism (16).
  6. Electrical switching device according to Claim 5, characterized in that the strip (23) has close to the bent part of the longer leg (25) at its longitudinal edges two oppositely arranged indentations (26) which serve to accommodate holding studs of the switching mechanism (16) on which the holding part (21) centres itself.
  7. Electrical switching device according to one of the preceding claims, characterized in that the flat shell (12) is provided with a groove which accommodates a holding part (21) and serves for its guidance.
EP89113535A 1988-07-27 1989-07-22 Electrical switchgear Expired - Lifetime EP0352679B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3825443 1988-07-27
DE3825443A DE3825443A1 (en) 1988-07-27 1988-07-27 ELECTRICAL SWITCHGEAR

Publications (3)

Publication Number Publication Date
EP0352679A2 EP0352679A2 (en) 1990-01-31
EP0352679A3 EP0352679A3 (en) 1990-08-22
EP0352679B1 true EP0352679B1 (en) 1994-12-28

Family

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Application Number Title Priority Date Filing Date
EP89113535A Expired - Lifetime EP0352679B1 (en) 1988-07-27 1989-07-22 Electrical switchgear

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EP (1) EP0352679B1 (en)
AT (1) ATE116477T1 (en)
DE (2) DE3825443A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4329100A1 (en) * 1992-10-08 1994-04-14 Abb Patent Gmbh Electrical switch
DE4239708A1 (en) * 1992-11-26 1994-06-01 Abb Patent Gmbh Electrical switch device with fixed and movable contacts - has moving contact formed as contact see-saw rotatable between two end positions with switch lever perpendicular to contact lever
DE4330715A1 (en) * 1993-09-10 1995-03-16 Kloeckner Moeller Gmbh Electrical switch with toggle switch
DE19529385C2 (en) * 1995-08-10 1999-12-30 Abb Patent Gmbh Electrical 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
DE19927984A1 (en) * 1999-06-18 2000-12-21 Kopp Heinrich Ag Modular device
DE19951249C2 (en) * 1999-10-25 2001-11-08 Abl Sursum Bayerische Elektroz Circuit breaker with RESET position
DE102006059134B4 (en) * 2006-12-14 2008-10-02 Siemens Ag Distribution box with release detection
FR2974664B1 (en) * 2011-04-29 2013-12-20 Hager Electro Sas FAULT TRIP INDICATOR BY THE POSITION OF THE KNOB

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3089930A (en) * 1960-10-18 1963-05-14 Cutler Hammer Inc Circuit breaker
US3183325A (en) * 1961-05-03 1965-05-11 Fed Pacific Electric Co Trip indicating circuit breakers
DE3342469A1 (en) * 1983-11-24 1985-06-05 Bbc Brown Boveri & Cie ELECTRIC SWITCH

Also Published As

Publication number Publication date
DE3825443A1 (en) 1990-02-01
EP0352679A2 (en) 1990-01-31
ATE116477T1 (en) 1995-01-15
EP0352679A3 (en) 1990-08-22
DE58908823D1 (en) 1995-02-09

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