EP0680661B1 - Line safety switch - Google Patents

Line safety switch Download PDF

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Publication number
EP0680661B1
EP0680661B1 EP94900625A EP94900625A EP0680661B1 EP 0680661 B1 EP0680661 B1 EP 0680661B1 EP 94900625 A EP94900625 A EP 94900625A EP 94900625 A EP94900625 A EP 94900625A EP 0680661 B1 EP0680661 B1 EP 0680661B1
Authority
EP
European Patent Office
Prior art keywords
staple
switch
bar
switching
contact bridge
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
EP94900625A
Other languages
German (de)
French (fr)
Other versions
EP0680661A1 (en
Inventor
Alfred Nyzner
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.)
Felten and Guilleaume Austria AG
Original Assignee
Felten and Guilleaume Austria AG
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Filing date
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Application filed by Felten and Guilleaume Austria AG filed Critical Felten and Guilleaume Austria AG
Publication of EP0680661A1 publication Critical patent/EP0680661A1/en
Application granted granted Critical
Publication of EP0680661B1 publication Critical patent/EP0680661B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2066—Fork-shaped bridge; Two transversally connected contact arms bridging two fixed contacts

Definitions

  • the invention relates to a circuit breaker with a switch equipped with a bimetallic and magnetic release and with a pivotable switching bridge which is coupled to a switching knob, the switching bridge with the help of the switching knob from the at least one fixed contact to the OFF position in a at the Fixed contact adjacent ON position is pivotable.
  • a circuit breaker (“overcurrent switch”) is known, in which an elongated hole is provided concentrically with its pivot axis in a switch-off lever. In the slot there is a hook bolt, which is guided with its ends in straight slots in the housing of the switch. The hooking bolt interacts with a switch lever which is pivotally mounted in the switch and which has a hook at one end. The other end of the hook bolt is assigned to the magnetic release and the bimetal release of the known circuit breaker.
  • the invention has for its object to develop a circuit breaker of the type mentioned above so that the switching operations are improved with regard to the movement of the components of the circuit breaker without impairing its tripping properties.
  • this object is achieved in that the switch toggle is connected to the movable switching bridge via a bracket and a tab, that the arm of the bracket connected to the bracket is guided in a slot guide, that the other arm of the bracket is connected to the switch, that the slot of the slot guide is provided in a pawl which is pivotally mounted in the switch lock and which can be latched at its end opposite the pivot point with a pawl rest, that the pawl rest pivotably mounted in the switch lock is assigned the bimetallic and magnetic release, so that the slot is angled is and from a part which is substantially parallel to the direction of displacement of the tab, and consists of a part which is inclined to the direction of displacement of the tab, extends away from the switching knob, and that the leg of the bracket received in the slot in the ON position in the part of the slot extending away from the switching knob is received.
  • the circuit breaker is of single-pole design. However, it can also be designed with up to four poles for nominal currents from 63 to 125 A.
  • the circuit breaker has a housing, of which only one housing half-shell is shown in the drawings.
  • a switch lock 1 on which the switching bridge 2 is pivotally mounted about a pivot axis 3 that is movable (rotatable) in the switch lock 1, a magnetic release 4, on the support of which the bimetallic release 5 and adjacent fixed contacts 6 are also mounted, and one Arc quenching device, consisting of deion chamber 7 with arc quenching chamber 8 and blow-off openings 9, which lead out of the housing into the open.
  • connecting terminals 10 and 11 are accommodated in the housing, the connecting terminal 10 being electrically conductively connected to the component carrying the magnetic release 4.
  • the terminal 11 is electrically conductively connected to the lower (not visible in the drawing) fixed contact.
  • the two fixed contacts 6 are electrically connected by the switching bridge 2 in the ON position.
  • Each fixed contact 6 is assigned its own deion chamber 7 and its own arc quenching chamber 8, the two arc quenching devices being arranged separately from one another and magnetically insulated from one another by a dividing wall (not shown) made of sheet iron.
  • the magnetic release 4 interacts with the switching lock 1 to trigger the circuit breaker in a manner to be described, via a lever 12 which is pivotably mounted on it.
  • the free end of the bimetallic release 5 also interacts with the switch lock 1 for triggering the circuit breaker.
  • the magnetic trigger 4 is adjusted via an armature spring 13 accommodated in it (see FIG. 2).
  • an adjusting screw 14 is provided, which is accessible from the outside through an opening in the housing.
  • switching on and triggering (pivoting of the movable switching bridge 2 into the ON position shown in FIG. 1 or into the OFF position shown in FIG. 3) always takes place via the switch lock 1, regardless of whether it is switched off via the bimetallic release 5 or the magnetic release 4 or with the help of the switching knob 15 provided in the switching lock 1.
  • switching on always takes place with the help of the switching knob 15 via the switching lock 1, in that the switching knob 15 is pivoted.
  • the switching lock 1 shown in FIGS. 4 and 5, including the movable switching bridge 2 pivotably mounted on it, is designed as an independent component which can be used in the housing when the circuit breaker according to the invention is assembled.
  • the switching lock 1 consists of two lock plates 20 and 21 which are connected to one another via the pivot axes 3, 22, 23 and 24.
  • the switch toggle 15 is pivotally mounted on the pivot axis 22 of the switch lock 1.
  • the shift knob 15 consists of two parts, namely the actual shift knob 15 and two spring holders 25, which are pivotally mounted on the axis 22 coaxially to the shift knob 15.
  • the switch toggle 15 is loaded by a button spring 26 into its pivot position corresponding to the OFF position shown in FIG. 3.
  • one leg of the spring 26 is supported on the one lock plate 21 and the other leg on the end 27 'of a spring 27 which passes through the spring holder 25.
  • the spring holder 25 (two spring holders 25 are provided in the exemplary embodiment shown, see FIG. 7) is braced by two spring springs 27, which are accommodated in the interior of the switching knob 15, with respect to the switching knob 15, so that the spring holder 25 against the switching knob 15 against Power of these springs 27 are pivotable. This is of importance for the jump switching to be described, which can be implemented in the circuit breaker according to the invention.
  • the switching knob 15 is over its two Spring holder 25, coupled via a bracket 30, a tab 31 and a switching bridge tab 32 to the movable switching bridge 2.
  • the essentially U-shaped bracket 30 is inserted with one of its legs in holes 33 of the two spring holders 25 and engages with its other leg in an opening 29 of the tab 31.
  • the tab 31 is coupled to the switching bridge tab 32 via a joint 34.
  • the switching bridge tab 32 has two mutually parallel parts 35 which are connected to one another via a web 36.
  • the switching bridge tab 32 can be pivoted about the axis 3 rotatably inserted in the switching lock.
  • Two contact springs 37 are inserted over the axis 3, the legs of which are supported on the one hand on the movable switching bridge 2 and on the other hand on the switching bridge tab 32.
  • One leg 35 of the switching bridge tab 32 also carries an extension 38, into which a tear spring 39 is suspended, the other end of which is suspended in an extension 40 which is formed in one piece with the lock plate 21.
  • the switching bridge tab 32 can pivot at the end of the switch-on process (movement of the movable switching bridge 2 from the OFF position to the ON position) relative to the moving switching bridge 2, so that the latter under the Effect of the two contact springs 37 is pressed with their two contact ends 41 against both contacts 6 fixed to the housing.
  • the leg of the bracket 30 coupled with the tab 31 is guided in a backdrop (slot guide).
  • This backdrop is formed by slots 50 in the two legs of a pawl 51.
  • the pawl 51 is pivotally mounted in the switch lock 1 about the axis 24, the two legs of the pawl 51 being connected by a web 52.
  • a support tab 53 is provided whose ends associated with the leg of the bracket 30, which is coupled to the tab 31, have holes which the said leg of the bracket 30 engages. At the other end, the two mutually parallel parts of the support bracket 53 have a recess into which the other leg of the bracket 30 engages.
  • the end of the pawl 51 facing away from the pivot axis 24 is assigned to a pawl support 60.
  • the pawl support 60 is pivotally mounted in the switch lock 1 about the axis 23 and is loaded by a tension spring 61 onto the pawl 51 or the tab 31.
  • the free end 51 ′ of the pawl 51 is latched to the pawl support 60 in that a shoulder 62 of the pawl 51 on a shoulder 63 of the pawl support 60 lies on.
  • two projections 64 and 65 are provided on the pawl support 60, which are assigned on the one hand to the lever 12 of the magnetic release 4 and on the other hand to the free end of the bimetal release 5.
  • the pawl support 60 is pivoted counterclockwise and releases the pawl 51.
  • a catch 70 is also pivotally mounted about the axis 24, which is under the action of a spring 71, which loads it clockwise (FIG. 4).
  • the switching knob 15 is moved further (clockwise), its spring retainers 25 are pivoted with increasing tension in the spring springs 27.
  • An attachment 72 is provided on the switching toggle 15, which on the catch 70 in the region of a recess 73 provided in it runs when the coupled to the tab 31 leg of the bracket 30 is approximately in the region of the slot 50 of the slot guide in the pawl 51, where it from a portion running essentially parallel to the direction of displacement of the tab 31 in the from the pivot axis 22 of the Switch toggle 15 runs away part (about the position shown in FIG. 6).
  • the switching operation takes place via the switching lock 1.
  • the switching toggle 15 actuates the switching bridge 2, which is driven via the tab 31 and the switching bridge tab 32, via the bracket 30 guided in the link (slot 50 in the pawl 51) and which Contacts 41 are pressed onto the contacts 6.
  • the latching mechanism of the switch lock 1 according to the invention consists of the latch support 60 with its shoulder 63 and the latch 51 engaging in this with its shoulder 62.
  • the triggering process can take place independently of the position or any blocking of the switching knob 15 (free triggering).
  • the pawl 51 In the ON position of the circuit breaker according to the invention, the pawl 51, with its shoulder 62, which is provided on a web connecting the two parallel parts of the pawl 51 and protrudes therefrom, has engaged in the shoulder 63 of the pawl support 60.
  • the position of the switching knob 15 is reached and held by the joint, which is formed from the spring holders 25 (bores 33) and the bracket 30, being exceeded.
  • the movable switching bridge 2 is on the bridge tab 32 and the tab 31 and the one facing away from the switch toggle 15 Part of the slot 50 in the pawl 4 locked leg of the bracket 30 tensioned. In this position, the tear spring 39 is tensioned and pulls the switching bridge 2 away from the fixed contacts 6 at the moment of triggering.
  • both contact springs 37 are also tensioned in order to build up the contact pressure.
  • a larger bearing hole play of the same with respect to the axis 3
  • an uneven contact erosion can be compensated for in the circuit breaker according to the invention.
  • the pawl support 60 is pivoted either by the bimetal 5 or by the lever 12 against the force of the spring 61 and the pawl 51 is unlocked, so that the angled in the Parts 50 'of the slots 50 of the legs of the bracket 30 are moved out of these parts 50' and the movable switching bridge 2, driven by the tear spring 39, is pivoted into the OFF position shown in FIG. 2.
  • the leg of the bracket 30 received in the slots 50 of the pawl 51 moves into the end of the slots 50 of the pawl 51 that is distant from the axis 24 about which the pawl 51 is pivotally mounted.
  • the movable switching bridge 2 is additionally pushed open by the plunger of the magnetic release 4, thus preventing the contacts 41 and 6 from welding.
  • the red field on the contact position indicator remains 80 visible in the viewing window 81 in the housing of the circuit breaker.
  • the circuit breaker If the circuit breaker is in the OFF position (contacts open), the pawl 51 is raised by the switching knob 15, which is pressed into the OFF position by the spring 26 loading it, via the bracket 30 and is ready to be moved into the Hook shoulder 63 of the pawl support 60 when this is pivoted back under the action of the spring 61.
  • the tear spring 39 is also (somewhat) tensioned in this position in order to keep the movable switching bridge 2 in the OFF position.
  • the pawl support 60 is pressed by the force of the spring 61 against the shoulder 62 of the pawl 51 in order to be ready for the latching.
  • the green field of the contact position indicator 80 indicating the OFF position is visible from the outside.
  • the function of the snap-on switching is as follows:
  • the switch toggle 15 is pivoted clockwise when switched on (FIG. 1) until the leg of the bracket 30 coupled to the tab 31 bears against the catch 70.
  • the tab 31, the switching bridge tab 32 and thus the movable switching bridge 2 are prevented from moving further, even if the switching toggle 15 is pivoted further (position FIG. 6).
  • the contact ends 41 of the movable switching bridge 2 are approximately 1 mm in front of the fixed contacts 6 and, regardless of the continued movement of the switching knob 15, do not move any further.
  • a switch lock 1 with a switching knob 15 is assigned to a pivotable switching bridge 2.
  • the switching bridge 2 can be pivoted with the help of the switching knob 15 from the OFF position which is at a distance from the fixed contacts 6 to an ON position which is in contact with the fixed contacts 6.
  • the switching knob 15 is connected to the movable switching bridge 2 via an articulated connection consisting of a bracket 30 and a tab 31.
  • the leg of the bracket 30 connected to the tab 31 is guided in a slot guide 50, 51, whereas the other leg of the bracket 30 is articulated to the switching knob 15.
  • the slot guide 50 is provided in a pawl 51 which is pivotably mounted in the switching lock 1 and which can be latched to a pawl rest 60 at its end 51 'opposite the pivot point 24.
  • the pawl support 60 which is assigned the bimetallic release 5 and the magnetic release 4, is pivotally mounted 23 in the switch lock 1.
  • the slot 50 of the slot guide extends substantially parallel to the direction of displacement of the tab 31 over part of its length.
  • the leg of the bracket 30 received in the slot guide 50, 51 is in the ON position in a part 50 'of the slot which extends away from the switching knob 15 50 added and the shift knob 15 assumes an over-dead center position with the bracket 30.

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  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

In a line safety switch with a break section (6, 41) equipped with a bimetallic release device and a magnetic release device (4), a switch latch (1) with a switching toggle (15) is associated to a swivelling switching bridge (2). The switching bridge (2) may be swivelled by means of the switching toggle (15) out of an OFF position apart from the fixed contacts (6) into an ON position in which it lies on the fixed contacts (6). The switching toggle (15) is coupled to the movable switching bridge (31) by an articulated joint which consists of a hoop (30) and a bracket (31). The leg of the hoop (30) linked to the bracket (31) is guided in a slotted guiding part (50, 51) whereas the other leg of the hoop (39) is joined to the switching toggle (15) in an articulated manner. The guiding slot (50) is provided in a ratchet (51) swivellingly mounted in the switch latch (1). The ratchet (51) can snap into a ratchet support (50) with its end (51') opposite to the swivelling point (24). The ratchet support (60) which is associated to the bimetallic release device (5) and to the magnetic release device (4), is swivellingly (23) mounted in the switch latch (1). The guiding slot of the guiding part (50) extends over part of its length in a substantially parallel direction to the sliding direction of the bracket (31). The leg of the hoop (30) received in the guiding slotted part (50, 51) is received in the ON position in a part (50') of the slot (50) which extends away from the switching toggle (15) and the switching toggle (15) takes together with the hoop (30) an over dead centre position.

Description

Die Erfindung betrifft einen Leitungsschutzschalter mit einem mit Bimetall- und Magnetauslösung ausgerüsteten Schaltschloß und mit einer verschwenkbaren Schaltbrücke, die mit einem Schaltknebel gekuppelt ist, wobei die Schaltbrücke mit Hilfe des Schaltknebels aus der von wenigstens einem Festkontakt einen Abstand aufweisenden AUS-Stellung in eine an dem Festkontakt anliegende EIN-Stellung verschwenkbar ist.The invention relates to a circuit breaker with a switch equipped with a bimetallic and magnetic release and with a pivotable switching bridge which is coupled to a switching knob, the switching bridge with the help of the switching knob from the at least one fixed contact to the OFF position in a at the Fixed contact adjacent ON position is pivotable.

Aus der DE-A-24 17 286 ist ein Leitungsschutzschalter ("Überstromschalter") bekannt, bei dem in einem Ausschalthebel ein zu dessen Schwenkachse konzentrisch gekrümmtes Langloch vorgesehen ist. In dem Langloch sitzt ein Einhakbolzen, der mit seinen Enden in geraden Langlöchern im Gehäuse des Schalters geführt ist. Der Einhakbolzen wirkt mit einem im Schalter verschwenkbar gelagerten Ausschalthebel zusammen, der hiezu an einem Ende einen Haken aufweist. Das andere Ende des Einhakbolzens ist dem Magnetauslöser und dem Bimetallauslöser des bekannten Leitungsschutzschalters zugeordnet.From DE-A-24 17 286 a circuit breaker ("overcurrent switch") is known, in which an elongated hole is provided concentrically with its pivot axis in a switch-off lever. In the slot there is a hook bolt, which is guided with its ends in straight slots in the housing of the switch. The hooking bolt interacts with a switch lever which is pivotally mounted in the switch and which has a hook at one end. The other end of the hook bolt is assigned to the magnetic release and the bimetal release of the known circuit breaker.

Der Erfindung liegt die Aufgabe zugrunde, einen Leitungsschutzschalter der oben genannten Bauart so weiterzuentwikkeln, daß die Schaltvorgänge im Hinblick auf die Bewegung der Bauteile des Leitungsschutzschalters verbessert werden, ohne dessen Auslöseeigenschaften zu beeinträchtigen.The invention has for its object to develop a circuit breaker of the type mentioned above so that the switching operations are improved with regard to the movement of the components of the circuit breaker without impairing its tripping properties.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß der Schaltknebel über einen Bügel und eine Lasche mit der beweglichen Schaltbrücke verbunden ist, daß der mit der Lasche verbundene Schenkel des Bügels in einer Schlitzführung geführt ist, daß der andere Schenkel des Bügels mit dem Schaltknebel verbunden ist, daß der Schlitz der Schlitzführung in einer im Schaltschloß verschwenkbar gelagerten Klinke vorgesehen ist, die an ihrem dem Schwenkpunkt gegenüberliegenden Ende mit einer Klinkenauflage verrastbar ist, daß der im Schaltschloß verschwenkbar gelagerten Klinkenauflage die Bimetall- und Magnetauslösung zugeordnet ist, daß der Schlitz abgewinkelt ist und aus einem Teil, der im wesentlichen parallel zur Verschieberichtung der Lasche verläuft, und aus einem Teil besteht, der zur Verschieberichtung der Lasche geneigt, vom Schaltknebel weg verläuft, und daß der im Schlitz aufgenommene Schenkel des Bügels in der EIN-Stellung in dem vom Schaltknebel weg verlaufenden Teil des Schlitzes aufgenommen ist.According to the invention, this object is achieved in that the switch toggle is connected to the movable switching bridge via a bracket and a tab, that the arm of the bracket connected to the bracket is guided in a slot guide, that the other arm of the bracket is connected to the switch, that the slot of the slot guide is provided in a pawl which is pivotally mounted in the switch lock and which can be latched at its end opposite the pivot point with a pawl rest, that the pawl rest pivotably mounted in the switch lock is assigned the bimetallic and magnetic release, so that the slot is angled is and from a part which is substantially parallel to the direction of displacement of the tab, and consists of a part which is inclined to the direction of displacement of the tab, extends away from the switching knob, and that the leg of the bracket received in the slot in the ON position in the part of the slot extending away from the switching knob is received.

Bevorzugte und vorteilhafte Ausführungsformen des erfindungsgemäßen Schalters sind Gegenstand der Unteransprüche.Preferred and advantageous embodiments of the switch according to the invention are the subject of the dependent claims.

Nachstehend wird beispielhaft eine Ausführungsform des Leitungsschutzschalters gemäß der Erfindung unter Bezugnahme auf die angeschlossenen Zeichnungen in Einzelheiten beschrieben. Es zeigt:

  • Fig. 1 den erfindungsgemäßen Leitungsschutzschalter bei abgenommener, vorderer Gehäuseschale in der EIN-Stellung,
  • Fig. 2 den Schalter beim Auslösen,
  • Fig. 3 den Schalter in AUS-Stellung,
  • Fig. 4 das Schaltschloß des Leitungsschutzschalters von der Seite gesehen (die eine Schloßplatte ist abgenommen),
  • Fig. 5 das Schaltschloß aus Fig. 4 von unten gesehen,
  • Fig. 6 das Schaltschloß aus Fig. 4 und 5 während des Einschaltvorganges,
  • Fig. 7 im Schnitt den Schaltknebel mit seinem Federhalter und
  • Fig. 8 die bewegliche Schaltbrücke und ihre Laschen.
An embodiment of the circuit breaker according to the invention is described in detail below by way of example with reference to the attached drawings. It shows:
  • 1 shows the circuit breaker according to the invention with the front housing shell removed, in the ON position,
  • 2 the switch when triggered,
  • 3 shows the switch in the OFF position,
  • 4 seen the switch lock of the circuit breaker from the side (the one lock plate is removed),
  • 5 the switching lock from FIG. 4 seen from below,
  • 6 shows the switch lock from FIGS. 4 and 5 during the switch-on process,
  • Fig. 7 in section the shift knob with its spring holder and
  • Fig. 8, the movable switching bridge and its tabs.

Im gezeigten Ausführungsbeispiel ist der Leitungsschutzschalter einpolig ausgebildet. Er kann aber auch bis zu vierpolig für Nennströme von 63 bis 125 A ausgelegt sein.In the exemplary embodiment shown, the circuit breaker is of single-pole design. However, it can also be designed with up to four poles for nominal currents from 63 to 125 A.

Der Leitungsschutzschalter besitzt ein Gehäuse, von dem in den Zeichnungen lediglich die eine Gehäusehalbschale gezeigt ist.The circuit breaker has a housing, of which only one housing half-shell is shown in the drawings.

In dem Gehäuse sind ein Schaltschloß 1, an dem auch die Schaltbrücke 2 um eine im Schaltschloß 1 beweglich (drehbar) eingesetzte Schwenkachse 3 verschwenkbar gelagert ist, ein Magnetauslöser 4, an dessen Träger auch der Bimetallauslöser 5 und nebeneinanderliegende Festkontakte 6 montiert sind, sowie eine Lichtbogenlöscheinrichtung, bestehend aus Deionkammer 7 mit Lichtbogenlöschkammer 8 und Abblaseöffnungen 9, die aus dem Gehäuse ins Freie führen, vorgesehen.In the housing there is a switch lock 1, on which the switching bridge 2 is pivotally mounted about a pivot axis 3 that is movable (rotatable) in the switch lock 1, a magnetic release 4, on the support of which the bimetallic release 5 and adjacent fixed contacts 6 are also mounted, and one Arc quenching device, consisting of deion chamber 7 with arc quenching chamber 8 and blow-off openings 9, which lead out of the housing into the open.

Weiters sind im Gehäuse die Anschlußklemmen 10 und 11 untergebracht, wobei die Anschlußklemme 10 an dem den Magnetauslöser 4 tragenden Bauteil elektrisch leitend angeschlossen ist. Die Klemme 11 ist mit dem unteren (in der Zeichnung nicht sichtbaren) Festkontakt elektrisch leitend verbunden.Furthermore, the connecting terminals 10 and 11 are accommodated in the housing, the connecting terminal 10 being electrically conductively connected to the component carrying the magnetic release 4. The terminal 11 is electrically conductively connected to the lower (not visible in the drawing) fixed contact.

Die beiden Festkontakte 6 werden in der EIN-Stellung von der Schaltbrücke 2 elektrisch leitend verbunden.The two fixed contacts 6 are electrically connected by the switching bridge 2 in the ON position.

Jedem Festkontakt 6 ist eine eigene Deionkammer 7 und eine eigene Lichtbogenlöschkammer 8 zugeordnet, wobei die beiden Lichtbogenlöscheinrichtungen voneinander getrennt angeordnet und voneinander durch eine Trennwand (nicht gezeigt) aus Eisenblech magnetisch isoliert sind.Each fixed contact 6 is assigned its own deion chamber 7 and its own arc quenching chamber 8, the two arc quenching devices being arranged separately from one another and magnetically insulated from one another by a dividing wall (not shown) made of sheet iron.

Der Magnetauslöser 4 wirkt über einen an ihm verschwenkbar gelagerten Hebel 12 auf noch zu beschreibende Art und Weise mit dem Schaltschloß 1 zum Auslösen des Leitungsschutzschalters zusammen. Auch das freie Ende des Bimetallauslösers 5 wirkt mit dem Schaltschloß 1 zum Auslösen des Leitungsschutzschalters zusammen.The magnetic release 4 interacts with the switching lock 1 to trigger the circuit breaker in a manner to be described, via a lever 12 which is pivotably mounted on it. The free end of the bimetallic release 5 also interacts with the switch lock 1 for triggering the circuit breaker.

Das Justieren des Magnetauslösers 4 erfolgt über eine in ihm untergebrachte Ankerfeder 13 (sh. Fig. 2). Zum Justieren des Bimetallauslösers 5 ist eine Stellschraube 14 vorgesehen, die durch eine Öffnung im Gehäuse von außen her zugänglich ist.The magnetic trigger 4 is adjusted via an armature spring 13 accommodated in it (see FIG. 2). To adjust the bimetallic release 5, an adjusting screw 14 is provided, which is accessible from the outside through an opening in the housing.

Bei dem erfindungsgemäßen Leitungsschutzschalter erfolgt das Einschalten und das Auslösen (Verschwenken der beweglichen Schaltbrücke 2 in die in Fig. 1 gezeigte EIN-Stellung bzw. in die in Fig. 3 gezeigte AUS-Stellung) immer über das Schaltschloß 1, ganz gleich, ob das Ausschalten über den Bimetallauslöser 5 oder den Magnetauslöser 4 oder mit Hilfe des im Schaltschloß 1 vorgesehenen Schaltknebels 15 erfolgt. Das Einschalten erfolgt hingegen immer mit Hilfe des Schaltknebels 15 über das Schaltschloß 1, indem der Schaltknebel 15 verschwenkt wird.In the line circuit breaker according to the invention, switching on and triggering (pivoting of the movable switching bridge 2 into the ON position shown in FIG. 1 or into the OFF position shown in FIG. 3) always takes place via the switch lock 1, regardless of whether it is switched off via the bimetallic release 5 or the magnetic release 4 or with the help of the switching knob 15 provided in the switching lock 1. On the other hand, switching on always takes place with the help of the switching knob 15 via the switching lock 1, in that the switching knob 15 is pivoted.

Das in den Fig. 4 und 5 gezeigte Schaltschloß 1 ist einschließlich der an ihm verschwenkbar gelagerten, beweglichen Schaltbrücke 2 als selbständiger Bauteil ausgebildet, der für sich beim Zusammenbau des erfindungsgemäßen Leitungsschutzschalters in das Gehäuse eingesetzt werden kann.The switching lock 1 shown in FIGS. 4 and 5, including the movable switching bridge 2 pivotably mounted on it, is designed as an independent component which can be used in the housing when the circuit breaker according to the invention is assembled.

Das Schaltschloß 1 besteht aus zwei Schloßplatten 20 und 21, die miteinander über die Schwenkachsen 3, 22, 23 und 24 miteinander verbunden sind. Auf der Schwenkachse 22 des Schaltschlosses 1 ist verschwenkbar der Schaltknebel 15 gelagert.The switching lock 1 consists of two lock plates 20 and 21 which are connected to one another via the pivot axes 3, 22, 23 and 24. The switch toggle 15 is pivotally mounted on the pivot axis 22 of the switch lock 1.

Der Schaltknebel 15 besteht aus zwei Teilen, nämlich dem eigentlichen Schaltknebel 15 und zwei Federhaltern 25, die auf der Achse 22 koaxial zum Schaltknebel 15 verschwenkbar gelagert sind. Der Schaltknebel 15 wird von einer Knopffeder 26 in seine der in Fig. 3 gezeigten AUS-Stellung entsprechende Schwenklage belastet. Hiezu stützt sich ein Schenkel der Feder 26 an der einen Schloßplatte 21 und der andere Schenkel an dem Ende 27' einer den einen Federhalter 25 durchgreifenden Sprungfeder 27 an.The shift knob 15 consists of two parts, namely the actual shift knob 15 and two spring holders 25, which are pivotally mounted on the axis 22 coaxially to the shift knob 15. The switch toggle 15 is loaded by a button spring 26 into its pivot position corresponding to the OFF position shown in FIG. 3. For this purpose, one leg of the spring 26 is supported on the one lock plate 21 and the other leg on the end 27 'of a spring 27 which passes through the spring holder 25.

Der Federhalter 25 (im gezeigten Ausführungsbeispiel sind zwei Federhalter 25 vorgesehen, siehe Fig. 7) wird von zwei Sprungfedern 27, die im Inneren des Schaltknebels 15 untergebracht sind, gegenüber dem Schaltknebel 15 verspannt, so daß die Federhalter 25 gegenüber dem Schaltknebel 15 entgegen der Kraft dieser Sprungfedern 27 verschwenkbar sind. Dies ist für die noch zu beschreibende Sprungeinschaltung, die beim erfindungsgemäßen Leitungsschutzschalter verwirklicht sein kann, von Bedeutung.The spring holder 25 (two spring holders 25 are provided in the exemplary embodiment shown, see FIG. 7) is braced by two spring springs 27, which are accommodated in the interior of the switching knob 15, with respect to the switching knob 15, so that the spring holder 25 against the switching knob 15 against Power of these springs 27 are pivotable. This is of importance for the jump switching to be described, which can be implemented in the circuit breaker according to the invention.

Bei dem im erfindungsgemäßen Leitungsschutzschalter vorgesehenen Schaltschloß 1 ist der Schaltknebel 15 über seine beiden Federhalter 25, über einen Bügel 30, eine Lasche 31 und eine Schaltbrückenlasche 32 mit der beweglichen Schaltbrücke 2 gekuppelt.In the switching lock 1 provided in the circuit breaker according to the invention, the switching knob 15 is over its two Spring holder 25, coupled via a bracket 30, a tab 31 and a switching bridge tab 32 to the movable switching bridge 2.

Im einzelnen ist der im wesentlichen U-förmig ausgebildete Bügel 30 mit einem seiner Schenkel in Löchern 33 der beiden Federhalter 25 eingesetzt und greift mit seinem anderen Schenkel in eine Öffnung 29 der Lasche 31 ein.In particular, the essentially U-shaped bracket 30 is inserted with one of its legs in holes 33 of the two spring holders 25 and engages with its other leg in an opening 29 of the tab 31.

Die Lasche 31 ist mit der Schaltbrückenlasche 32 über ein Gelenk 34 gekuppelt. Die Schaltbrückenlasche 32 weist zwei zueinander parallel verlaufende Teile 35 auf, die über einen Steg 36 miteinander verbunden sind. Die Schaltbrückenlasche 32 ist so wie die bewegliche Schaltbrücke 2 um die im Schaltschloß drehbar eingesetzte Achse 3 verschwenkbar. Über die Achse 3 sind zwei Kontaktfedern 37 gesteckt, deren Schenkel sich einerseits an der beweglichen Schaltbrücke 2 und anderseits an der Schaltbrückenlasche 32 abstützen.The tab 31 is coupled to the switching bridge tab 32 via a joint 34. The switching bridge tab 32 has two mutually parallel parts 35 which are connected to one another via a web 36. Like the movable switching bridge 2, the switching bridge tab 32 can be pivoted about the axis 3 rotatably inserted in the switching lock. Two contact springs 37 are inserted over the axis 3, the legs of which are supported on the one hand on the movable switching bridge 2 and on the other hand on the switching bridge tab 32.

Der eine Schenkel 35 der Schaltbrückenlasche 32 trägt noch einen Ansatz 38, in den eine Aufreißfeder 39 eingehängt ist, deren anderes Ende in einen mit der Schloßplatte 21 einstückig ausgebildeten Fortsatz 40 eingehängt ist.One leg 35 of the switching bridge tab 32 also carries an extension 38, into which a tear spring 39 is suspended, the other end of which is suspended in an extension 40 which is formed in one piece with the lock plate 21.

Durch die beschriebene Konstruktion der Anordnung aus Schaltbrückenlasche 32 und beweglicher Schaltbrücke 2 kann die Schaltbrückenlasche 32 am Ende des Einschaltvorganges (Bewegung der beweglichen Schaltbrücke 2 aus der AUS-Stellung in die EIN-Stellung) gegenüber der beweglichen Schaltbrücke 2 verschwenken, so daß letztere unter der Wirkung der beiden Kontaktfedern 37 mit ihren beiden Kontaktenden 41 gegen beide gehäusefeste Kontakte 6 gedrückt wird.Due to the described construction of the arrangement of switching bridge tab 32 and movable switching bridge 2, the switching bridge tab 32 can pivot at the end of the switch-on process (movement of the movable switching bridge 2 from the OFF position to the ON position) relative to the moving switching bridge 2, so that the latter under the Effect of the two contact springs 37 is pressed with their two contact ends 41 against both contacts 6 fixed to the housing.

Der mit der Lasche 31 gekuppelte Schenkel des Bügels 30 ist in einer Kulisse (Schlitzführung) geführt. Diese Kulisse wird von Schlitzen 50 in den beiden Schenkeln einer Klinke 51 gebildet. Die Klinke 51 ist im Schaltschloß 1 um die Achse 24 verschwenkbar gelagert, wobei die beiden Schenkel der Klinke 51 von einem Steg 52 verbunden sind.The leg of the bracket 30 coupled with the tab 31 is guided in a backdrop (slot guide). This backdrop is formed by slots 50 in the two legs of a pawl 51. The pawl 51 is pivotally mounted in the switch lock 1 about the axis 24, the two legs of the pawl 51 being connected by a web 52.

Um zu verhindern, daß sich die beiden Schenkel des Bügels 30 unter der Wirkung der Einschaltkräfte und der Kontaktkräfte einander annähern, ist eine Stützlasche 53 vorgesehen, deren dem Schenkel des Bügels 30, der mit der Lasche 31 gekuppelt ist, zugeordnete Enden Löcher aufweisen, durch welche der genannte Schenkel des Bügels 30 greift. Am anderen Ende weisen die beiden parallel zueinander verlaufenden Teile der Stützlasche 53 eine Ausnehmung auf, in die der andere Schenkel des Bügels 30 eingreift.In order to prevent the two legs of the bracket 30 from approaching one another under the action of the switch-on forces and the contact forces, a support tab 53 is provided whose ends associated with the leg of the bracket 30, which is coupled to the tab 31, have holes which the said leg of the bracket 30 engages. At the other end, the two mutually parallel parts of the support bracket 53 have a recess into which the other leg of the bracket 30 engages.

Das von der Schwenkachse 24 abgekehrte Ende der Klinke 51 ist einer Klinkenauflage 60 zugeordnet. Die Klinkenauflage 60 ist im Schaltschloß 1 um die Achse 23 verschwenkbar gelagert und wird von einer Zugfeder 61 auf die Klinke 51 bzw. die Lasche 31 hin belastet. In der in Fig. 1 gezeigten EIN-Stellung (bzw. in der zum Einschalten bereiten Stellung) ist das freie Ende 51' der Klinke 51 mit der Klinkenauflage 60 dadurch verrastet, daß ein Ansatz 62 der Klinke 51 auf einer Schulter 63 der Klinkenauflage 60 aufliegt.The end of the pawl 51 facing away from the pivot axis 24 is assigned to a pawl support 60. The pawl support 60 is pivotally mounted in the switch lock 1 about the axis 23 and is loaded by a tension spring 61 onto the pawl 51 or the tab 31. In the ON position shown in FIG. 1 (or in the position ready to be switched on), the free end 51 ′ of the pawl 51 is latched to the pawl support 60 in that a shoulder 62 of the pawl 51 on a shoulder 63 of the pawl support 60 lies on.

An der Klinkenauflage 60 sind weiters zwei Vorsprünge 64 und 65 vorgesehen, die einerseits dem Hebel 12 des Magnetauslösers 4 und anderseits dem freien Ende des Bimetallauslösers 5 zugeordnet sind. Beim Ansprechen der genannten Bauteile wird die Klinkenauflage 60 entgegen dem Uhrzeigersinn verschwenkt und gibt die Klinke 51 frei.Furthermore, two projections 64 and 65 are provided on the pawl support 60, which are assigned on the one hand to the lever 12 of the magnetic release 4 and on the other hand to the free end of the bimetal release 5. When the components mentioned address the pawl support 60 is pivoted counterclockwise and releases the pawl 51.

Im Schaltschloß 1 ist weiters eine Raste 70 um die Achse 24 verschwenkbar gelagert, die unter der Wirkung einer Feder 71 steht, welche diese im Uhrzeigersinn (Fig. 4) belastet.In the switch lock 1, a catch 70 is also pivotally mounted about the axis 24, which is under the action of a spring 71, which loads it clockwise (FIG. 4).

In einer Vertiefung 76 der Raste 70 läuft der über die Bohrungen 33 mit den Federhaltern 25 des Schaltknebels 15 gekuppelte Schenkel des Bügels 30 auf, wenn der Schaltknebel 15 im Uhrzeigersinn aus der in Fig. 3 gezeigten Lage in die in Fig. 6 gezeigte Lage verschwenkt wird. Beim Weiterbewegen des Schaltknebels 15 (im Uhrzeigersinn) werden dessen Federhalter 25 unter zunehmender Spannung der Sprungfedern 27 verschwenkt. Am Schaltknebel 15 ist ein Ansatz 72 vorgesehen, der auf der Raste 70 im Bereich einer in ihr vorgesehenen Ausnehmung 73 aufläuft, wenn sich der mit der Lasche 31 gekuppelte Schenkel des Bügels 30 annähernd in dem Bereich des Schlitzes 50 der Schlitzführung in der Klinke 51 befindet, wo dieser aus einem im wesentlichen parallel zur Verschieberichtung der Lasche 31 verlaufenden Teil in den von der Schwenkachse 22 des Schaltknebels 15 weg verlaufenden Teil übergeht (etwa die Stellung gemäß Fig. 6).The leg of the bracket 30, which is coupled via the bores 33 to the spring holders 25 of the switching knob 15, runs into a recess 76 of the detent 70 when the switching knob 15 pivots clockwise from the position shown in FIG. 3 into the position shown in FIG. 6 becomes. When the switching knob 15 is moved further (clockwise), its spring retainers 25 are pivoted with increasing tension in the spring springs 27. An attachment 72 is provided on the switching toggle 15, which on the catch 70 in the region of a recess 73 provided in it runs when the coupled to the tab 31 leg of the bracket 30 is approximately in the region of the slot 50 of the slot guide in the pawl 51, where it from a portion running essentially parallel to the direction of displacement of the tab 31 in the from the pivot axis 22 of the Switch toggle 15 runs away part (about the position shown in FIG. 6).

Bei dem beschriebenen Leitungsschutzschalter erfolgt der Schaltvorgang über das Schaltschloß 1. Der Schaltknebel 15 betätigt über den in der Kulisse (Schlitz 50 in der Klinke 51) geführten, einen Totpunkt überschreitenden Bügel 30 die über die Lasche 31 und die Schaltbrückenlasche 32 angetriebene Schaltbrücke 2 und die Kontakte 41 werden an die Kontakte 6 angedrückt. Der Verklinkungsmechanismus des erfindungsgemäßen Schaltschlosses 1 besteht aus der Klinkenauflage 60 mit ihrer Schulter 63 und der in diese mit ihrem Ansatz 62 eingreifenden Klinke 51.In the case of the line circuit breaker described, the switching operation takes place via the switching lock 1. The switching toggle 15 actuates the switching bridge 2, which is driven via the tab 31 and the switching bridge tab 32, via the bracket 30 guided in the link (slot 50 in the pawl 51) and which Contacts 41 are pressed onto the contacts 6. The latching mechanism of the switch lock 1 according to the invention consists of the latch support 60 with its shoulder 63 and the latch 51 engaging in this with its shoulder 62.

Die Auslösung erfolgt entweder durch das von einem Überstrom erhitzte und ausgebogene Bimetall 5 oder durch den Hebel 12, der vom Stössel über den Anker des Magnetauslösers 4 bewegt wird, wenn über die Spule des Magnetauslösers 4 ein Kurzschlußstrom fließt.It is triggered either by the bimetal 5 heated and bent by an overcurrent or by the lever 12, which is moved by the plunger over the armature of the magnetic release 4 when a short-circuit current flows through the coil of the magnetic release 4.

Bei dem erfindungsgemäßen Schaltschloß 1 kann der Auslösevorgang unabhängig von der Stellung oder allfälligen Blockierung des Schaltknebels 15 stattfinden (Freiauslösung).In the switching lock 1 according to the invention, the triggering process can take place independently of the position or any blocking of the switching knob 15 (free triggering).

In der EIN-Stellung des erfindungsgemäßen Leitungsschutzschalters hat die Klinke 51 mit ihrem Ansatz 62, der an einem die beiden parallel verlaufenden Teile der Klinke 51 verbindenden Steg von diesem abstehend vorgesehen ist, in die Schulter 63 der Klinkenauflage 60 eingegriffen. Die Stellung des Schaltknebels 15 wird durch Totpunktüberschreitung des Gelenkes, das aus den Federhaltern 25 (Bohrungen 33) und dem Bügel 30 gebildet wird, erreicht und gehalten.In the ON position of the circuit breaker according to the invention, the pawl 51, with its shoulder 62, which is provided on a web connecting the two parallel parts of the pawl 51 and protrudes therefrom, has engaged in the shoulder 63 of the pawl support 60. The position of the switching knob 15 is reached and held by the joint, which is formed from the spring holders 25 (bores 33) and the bracket 30, being exceeded.

Die bewegliche Schaltbrücke 2 wird über die Brückenlasche 32 und die Lasche 31 und den in dem vom Schaltknebel 15 weg weisenden Teil des Schlitzes 50 in der Klinke 4 arretierten Schenkel des Bügels 30 gespannt. In dieser Stellung ist die Aufreißfeder 39 gespannt und zieht im Moment der Auslösung die Schaltbrücke 2 von den Festkontakten 6 weg.The movable switching bridge 2 is on the bridge tab 32 and the tab 31 and the one facing away from the switch toggle 15 Part of the slot 50 in the pawl 4 locked leg of the bracket 30 tensioned. In this position, the tear spring 39 is tensioned and pulls the switching bridge 2 away from the fixed contacts 6 at the moment of triggering.

In der EIN-Stellung sind auch beide Kontaktfedern 37 gespannt, um den Kontaktdruck aufzubauen. Durch ein größeres Lagerloch (Spiel desselben gegenüber der Achse 3) in der Lagerlasche 2' der beweglichen Schaltbrücke 2 und den symmetrisch angeordneten Kontaktfedern 37 kann beim erfindungsgemäßen Leitungsschutzschalter ein ungleichmäßiger Kontaktabbrand ausgeglichen werden.In the ON position, both contact springs 37 are also tensioned in order to build up the contact pressure. With a larger bearing hole (play of the same with respect to the axis 3) in the bearing bracket 2 'of the movable switching bridge 2 and the symmetrically arranged contact springs 37, an uneven contact erosion can be compensated for in the circuit breaker according to the invention.

Beim erfindungsgemäßen Leitungsschutzschalter ist es weiters möglich, einen Kontaktstellungsanzeiger 80 vorzusehen, der durch ein Sichtfenster 81 im Gehäuse von außen sichtbar ist, wobei in der in Fig. 1 gezeigten EIN-Stellung das rote Feld des Kontaktstellungsanzeigers 80 von außen sichtbar ist.In the case of the circuit breaker according to the invention, it is also possible to provide a contact position indicator 80 which is visible from the outside through a viewing window 81 in the housing, the red field of the contact position indicator 80 being visible from the outside in the ON position shown in FIG. 1.

Beim Auslösen des erfindungsgemäßen Leitungsschutzschalters wird ausgehend von der in Fig. 1 gezeigten EIN-Stellung die Klinkenauflage 60 entweder durch das Bimetall 5 oder durch den Hebel 12 entgegen der Kraft der Feder 61 verschwenkt und die Klinke 51 entriegelt, so daß sich der in den abgewinkelten Teilen 50' der Schlitze 50 befindliche Schenkel des Bügels 30 aus diesen Teilen 50' herausbewegt und die bewegliche Schaltbrücke 2, angetrieben von der Aufreißfeder 39, in die in Fig. 2 gezeigte AUS-Stellung verschwenkt wird. Dabei bewegt sich der in den Schlitzen 50 der Klinke 51 aufgenommene Schenkel des Bügels 30 in das von der Achse 24, um die herum die Klinke 51 verschwenkbar gelagert ist, entfernte Ende der Schlitze 50 der Klinke 51.When the circuit breaker according to the invention is triggered, starting from the ON position shown in FIG. 1, the pawl support 60 is pivoted either by the bimetal 5 or by the lever 12 against the force of the spring 61 and the pawl 51 is unlocked, so that the angled in the Parts 50 'of the slots 50 of the legs of the bracket 30 are moved out of these parts 50' and the movable switching bridge 2, driven by the tear spring 39, is pivoted into the OFF position shown in FIG. 2. The leg of the bracket 30 received in the slots 50 of the pawl 51 moves into the end of the slots 50 of the pawl 51 that is distant from the axis 24 about which the pawl 51 is pivotally mounted.

Erfolgt die Auslösung durch den Magnetauslöser 4, wird die bewegliche Schaltbrücke 2 zusätzlich durch den Stössel des Magnetauslösers 4 angetrieben aufgedrückt und so ein Verschweißen der Kontakte 41 und 6 verhindert.If the release is effected by the magnetic release 4, the movable switching bridge 2 is additionally pushed open by the plunger of the magnetic release 4, thus preventing the contacts 41 and 6 from welding.

Sollte die bewegliche Schaltbrücke 2 trotzdem mit den Festkontakten 6 verschweißt sein, bleibt das rote Feld der Kontaktstellungsanzeige 80 im Sichtfenster 81 im Gehäuse des Leitungsschutzschalters sichtbar.If the movable switching bridge 2 is nevertheless welded to the fixed contacts 6, the red field on the contact position indicator remains 80 visible in the viewing window 81 in the housing of the circuit breaker.

Befindet sich der Leitungsschutzschalter in der AUS-Stellung (Kontakte geöffnet), so ist die Klinke 51 durch den Schaltknebel 15, der von der ihn belastenden Feder 26 in die AUS-Stellung gedrückt wird, über den Bügel 30 angehoben und ist bereit, in die Schulter 63 der Klinkenauflage 60 einzuhaken, wenn diese unter der Wirkung der Feder 61 wieder zurückgeschwenkt wird.If the circuit breaker is in the OFF position (contacts open), the pawl 51 is raised by the switching knob 15, which is pressed into the OFF position by the spring 26 loading it, via the bracket 30 and is ready to be moved into the Hook shoulder 63 of the pawl support 60 when this is pivoted back under the action of the spring 61.

Die Aufreißfeder 39 ist auch in dieser Stellung (etwas) gespannt, um die bewegliche Schaltbrücke 2 in der AUS-Stellung zu halten.The tear spring 39 is also (somewhat) tensioned in this position in order to keep the movable switching bridge 2 in the OFF position.

Die Klinkenauflage 60 wird durch die Kraft der Feder 61 an den Ansatz 62 der Klinke 51 gedrückt, um für die Verklinkung bereit zu sein.The pawl support 60 is pressed by the force of the spring 61 against the shoulder 62 of the pawl 51 in order to be ready for the latching.

Im Sichtfenster 81 ist das die AUS-Stellung anzeigende grüne Feld des Kontaktstellungsanzeigers 80 von außen sichtbar.In the viewing window 81, the green field of the contact position indicator 80 indicating the OFF position is visible from the outside.

Bei dem erfindungsgemäßen Leitungsschutzschalter mit dem beschriebenen Schaltschloß ist die Funktion der Sprungeinschaltung die folgende:
Der Schaltknebel 15 wird beim Einschalten solange im Uhrzeigersinn (Fig. 1) verschwenkt bis der mit der Lasche 31 gekuppelte Schenkel des Bügels 30 an der Raste 70 anliegt. Dadurch sind die Lasche 31, die Schaltbrückenlasche 32 und damit die bewegliche Schaltbrücke 2 an einer weiteren Bewegung gehindert, auch wenn der Schaltknebel 15 weiter verschwenkt wird (Stellung Fig. 6). In dieser Stellung befinden sich die Kontaktenden 41 der beweglichen Schaltbrücke 2 etwa 1 mm vor den Festkontakten 6 und bewegen sich ungeachtet der fortgesetzten Bewegung des Schaltknebels 15 nicht weiter.In the circuit breaker according to the invention with the switch lock described, the function of the snap-on switching is as follows:
The switch toggle 15 is pivoted clockwise when switched on (FIG. 1) until the leg of the bracket 30 coupled to the tab 31 bears against the catch 70. As a result, the tab 31, the switching bridge tab 32 and thus the movable switching bridge 2 are prevented from moving further, even if the switching toggle 15 is pivoted further (position FIG. 6). In this position, the contact ends 41 of the movable switching bridge 2 are approximately 1 mm in front of the fixed contacts 6 and, regardless of the continued movement of the switching knob 15, do not move any further.

Beim Weiterverschwenken des Schaltknebels 15 werden die bereits vorgespannten Sprungfedern 26 noch weiter gespannt, bis der Ansatz 72 des Einschaltknebels 15 an der Raste 70 in ihrer Vertiefung 73 aufläuft und die Raste 70 aushebt. In diesem Moment gelangt die zunächst blockierte Schaltbrücke 2 mit jener Federkraft, die von den Sprungfedern 26 geliefert wird, über die Lasche 31 und die Schaltbrückenlasche 32 schlagartig mit ihren beiden Kontakten 41 in Anlage an die Festkontakte 6 und der Schalter wird geschlossen.When the switching knob 15 is pivoted further, the spring springs 26 which are already preloaded are tensioned even further until the shoulder 72 of the switching knob 15 on the catch 70 in their Recess 73 runs up and the catch 70 lifts. At this moment, the initially blocked switching bridge 2 with that spring force, which is supplied by the spring springs 26, abruptly abuts with its two contacts 41 into contact with the fixed contacts 6 via the tab 31 and the switching bridge tab 32, and the switch is closed.

Zusammenfassend kann die Erfindung wie folgt dargestellt werden:
Bei einem Leitungsschutzschalter mit einer mit Bimetallauslösung und Magnetauslösung 4 ausgerüsteten Schaltstrecke 6, 41 ist einer verschwenkbaren Schaltbrücke 2 ein Schaltschloß 1 mit einem Schaltknebel 15 zugeordnet. Die Schaltbrücke 2 kann mit Hilfe des Schaltknebels 15 aus der von Festkontakten 6 einen Abstand aufweisenden AUS-Stellung in eine an den Festkontakten 6 anliegenden EIN-Stellung verschwenkt werden. Der Schaltknebel 15 ist über eine gelenkige, aus einem Bügel 30 und einer Lasche 31 bestehende Verbindung mit der beweglichen Schaltbrücke 2 verbunden. Der mit der Lasche 31 verbundene Schenkel des Bügels 30 ist in einer Schlitzführung 50, 51 geführt, wogegen der andere Schenkel des Bügels 30 mit dem Schaltknebel 15 gelenkig verbunden ist. Die Schlitzführung 50 ist in einer im Schaltschloß 1 verschwenkbar gelagerten Klinke 51 vorgesehen, die an ihrem dem Schwenkpunkt 24 gegenüberliegenden Ende 51' mit einer Klinkenauflage 60 verrastbar ist. Die Klinkenauflage 60, der die Bimetallauslösung 5 und die Magnetauslösung 4 zugeordnet ist, ist im Schaltschloß 1 verschwenkbar 23 gelagert. Der Schlitz 50 der Schlitzführung verläuft über einen Teil seiner Länge im wesentlichen parallel zur Verschieberichtung der Lasche 31. Der in der Schlitzführung 50, 51 aufgenommene Schenkel des Bügels 30 ist in der EIN-Stellung in einem vom Schaltknebel 15 weg verlaufenden Teil 50' des Schlitzes 50 aufgenommen und der Schaltknebel 15 nimmt mit dem Bügel 30 eine Über-Totpunkt-Lage ein.The invention can be summarized as follows:
In the case of a line circuit breaker with a switching path 6, 41 equipped with a bimetal release and a magnetic release 4, a switch lock 1 with a switching knob 15 is assigned to a pivotable switching bridge 2. The switching bridge 2 can be pivoted with the help of the switching knob 15 from the OFF position which is at a distance from the fixed contacts 6 to an ON position which is in contact with the fixed contacts 6. The switching knob 15 is connected to the movable switching bridge 2 via an articulated connection consisting of a bracket 30 and a tab 31. The leg of the bracket 30 connected to the tab 31 is guided in a slot guide 50, 51, whereas the other leg of the bracket 30 is articulated to the switching knob 15. The slot guide 50 is provided in a pawl 51 which is pivotably mounted in the switching lock 1 and which can be latched to a pawl rest 60 at its end 51 'opposite the pivot point 24. The pawl support 60, which is assigned the bimetallic release 5 and the magnetic release 4, is pivotally mounted 23 in the switch lock 1. The slot 50 of the slot guide extends substantially parallel to the direction of displacement of the tab 31 over part of its length. The leg of the bracket 30 received in the slot guide 50, 51 is in the ON position in a part 50 'of the slot which extends away from the switching knob 15 50 added and the shift knob 15 assumes an over-dead center position with the bracket 30.

Claims (15)

  1. A line protection switch with a latch (1) equipped with a bimetallic and magnetic trip (4) and with a pivoted contact bridge (2) which is coupled to a switch knob (15), wherein the contact bridge (2) can be pivoted by means of the switch knob (15) out of the OFF position spaced from at least one fixed contact (6) into an ON position bearing on the fixed contact (6), characterized in that the switch knob (15) is connected to the movable contact bridge (2) by a staple (30) and a bar (31), in that the arm of the staple (30) connected to the bar (31) is guided in a slot guideway (50, 51), in that the other arm of the staple (30) is connected to the switch knob (15), in that the slot (50) of the slot guideway is provided in a catch (51) which is pivotally mounted in the latch (1) and can locate in a catch seat (60) at is end (51') opposite the pivot point (24), in that the bimetallic (5) and magnetic (4) trip is associated with the catch seat (60) pivotally (23) mounted in the latch (1), in that the slot (50) is angled and consists of a part which runs substantially parallel to the sliding direction of the bar (31) and a part (50') which is inclined relative to the sliding direction of the bar (31) and extends away from the switch knob (15), and in that the arm of the staple (30) received in the slot (50) is received in the ON position in the part (50') of the slot (50) extending away from the switch knob (15).
  2. A switch according to claim 1, characterized in that a tension spring (61) is stretched between the catch seat (60) and the latch (1), biasing the catch seat (60) into its position proximate to the catch (51).
  3. A switch according to claim 1 or 2, characterized in that the catch (51) has two arms running parallel to one another and which are connected together by a web (52), and in that slots (50) for reception of the one arm of the staple (30) are provided in both arms.
  4. A switch according to claim 3, characterized in that the catch (51) is pivotally mounted about a pivot (24) fixed relative to the latch by means of holes provided in the catch's two arms at the ends opposite to the catch seat (60).
  5. A switch according to any of claims 1 to 4, characterized in that the bar (31) is coupled to the movable contact bridge (2) through a contact bridge bar (32), which is pivotally mounted about the pivotal axis (3) of the contact bridge (2) and is coupled to the contact bridge (2) through at least one contact spring (37).
  6. A switch according to any of claims 1 to 5, characterized in that a staple brace (53) is provided between the arms of the staple (30) which connects the switch knob (15) to the bar (31), connecting together the two arms of the staple (30).
  7. A switch according to claim 6, characterized in that the staple brace (53) has two arms running parallel to one another and connected together.
  8. A switch according to claim 6 or 7, characterized in that the staple brace (53) has a recess at one end, in which the one arm of the staple (30) is received, and in that the staple brace (53) has a depression at the other end, open to one side, in which engages the other arm of the staple (30).
  9. A switch according to any of claims 1 to 8, characterized in that the staple (30) is connected to the switch knob (15) through at least one spring retainer (25) which can pivot relative to the switch knob (15) against a spring bias, in that a detent (70) is provided, pivotally mounted in the latch (1) and against which the arm of the staple (30) connected to the bar (31) stirkes when the switch knob (15) moves from the OFF position to the ON position, and in that a projection (72) is provided on the switch knob (15) and strikes the detent (70) at the end of turning the switch knob (15) into its position corresponding to the ON setting, in the sense of turning the detent (70) to release the staple (30).
  10. A switch according to claim 9, characterized in that the detent (70) is pivotally mounted in the latch (1) about the same axis (24) as the catch (51).
  11. A switch according to claim 9 or 10, characterized in that the detent (70) is acted on by a spring (71) which biases it into its pivotal position associated with the one arm of the staple (30), and in that a projection (75) is provided in the latch (1) which limits the turning of the detent (70) in the one direction and cooperates for this with a projection (74) on the detent (70).
  12. A switch according to any of claims 1 to 11, characterized in that the pivoted contact bridge (2) has two contact surfaces (41) which are associated with two fixed contacts (6), and in that the pivoted contact bridge (2) is pivotally mounted by a bearing lug (2') arranged symmetrically relative to the pivoted contact bridge (2), on a pivot (3) fixed between two latch plates (20, 21) of the latch (1) parallel to one another.
  13. A switch according to claim 12, characterized in that contact springs (37) are provided on both sides of the bearing lug (2') and have one arm bearing on the pivoted contact bridge (2) and the other arm bearing on the contact bridge bar (32).
  14. A switch according to any of claims 6 to 13, characterized in that the contact bridge bar (32) has two mutually parallel arms (35) which receive therebetween the end of the bar (31) associated with the pivoted contact bridge (2).
  15. A switch according to claim 9, characterized in that the projection (72) of the switch knob (15) strikes the detent (70) when the arm of the staple (30) coupled to the bar (31) is located in the region of the transition from the part of the slot (50) of the slot guideway (51) substantially parallel to the sliding direction of the bar (31) and the part (50') extending away from the switch knob (15).
EP94900625A 1993-01-21 1993-12-06 Line safety switch Expired - Lifetime EP0680661B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT90/93 1993-01-21
AT0009093A AT404769B (en) 1993-01-21 1993-01-21 CIRCUIT BREAKER
PCT/AT1993/000184 WO1994017545A1 (en) 1993-01-21 1993-12-06 Line safety switch

Publications (2)

Publication Number Publication Date
EP0680661A1 EP0680661A1 (en) 1995-11-08
EP0680661B1 true EP0680661B1 (en) 1997-03-12

Family

ID=3481250

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94900625A Expired - Lifetime EP0680661B1 (en) 1993-01-21 1993-12-06 Line safety switch

Country Status (12)

Country Link
EP (1) EP0680661B1 (en)
AT (2) AT404769B (en)
AU (1) AU672843B2 (en)
DE (1) DE59305821D1 (en)
DK (1) DK0680661T3 (en)
ES (1) ES2100663T3 (en)
GR (1) GR3023492T3 (en)
HR (1) HRP940032B1 (en)
NO (1) NO307068B1 (en)
SI (1) SI9400025A (en)
TR (1) TR28256A (en)
WO (1) WO1994017545A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014110757A1 (en) 2014-07-29 2016-02-04 Eaton Industries Austria Gmbh switchgear
EP3767660A1 (en) 2019-07-16 2021-01-20 Eaton Intelligent Power Limited A switching device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19933110A1 (en) * 1999-07-15 2001-01-18 Abb Patent Gmbh Switchgear for an electrical switching device, in particular for a circuit breaker
DE102004055564B4 (en) * 2004-11-18 2022-05-05 Abb Ag Electrical installation switching device
DE102011086834A1 (en) 2011-11-22 2013-05-23 Siemens Aktiengesellschaft Switching mechanism for an electrical switching device and electrical switching device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2802080A (en) * 1955-03-11 1957-08-06 Zinsco Electrical Products Circuit breaker
FR2226745B2 (en) * 1973-04-19 1978-03-03 Legrand Sa
AT331899B (en) * 1974-02-15 1976-08-25 Schrack Elektrizitaets Ag E ELECTRIC SWITCH
DE3335887C2 (en) * 1983-10-03 1986-08-07 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Switching mechanism for circuit breakers
FR2628261B1 (en) * 1988-03-02 1991-04-19 Legrand Sa CIRCUIT BREAKER WITH DEAD POINT MECHANISM

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014110757A1 (en) 2014-07-29 2016-02-04 Eaton Industries Austria Gmbh switchgear
US9953777B2 (en) 2014-07-29 2018-04-24 Eaton Industries (Austria) Gmbh Switching device
EP3767660A1 (en) 2019-07-16 2021-01-20 Eaton Intelligent Power Limited A switching device

Also Published As

Publication number Publication date
DK0680661T3 (en) 1997-04-01
NO952722L (en) 1995-07-07
NO307068B1 (en) 2000-01-31
GR3023492T3 (en) 1997-08-29
AU5370494A (en) 1994-08-15
TR28256A (en) 1996-03-28
EP0680661A1 (en) 1995-11-08
NO952722D0 (en) 1995-07-07
WO1994017545A1 (en) 1994-08-04
HRP940032A2 (en) 1996-08-31
DE59305821D1 (en) 1997-04-17
HRP940032B1 (en) 1999-02-28
SI9400025A (en) 1994-09-30
ATA9093A (en) 1998-06-15
ATE150208T1 (en) 1997-03-15
AU672843B2 (en) 1996-10-17
AT404769B (en) 1999-02-25
ES2100663T3 (en) 1997-06-16

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