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EP0591679B1 - Circuit interrupter with current monitoring - Google Patents

Circuit interrupter with current monitoring Download PDF

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Publication number
EP0591679B1
EP0591679B1 EP93114004A EP93114004A EP0591679B1 EP 0591679 B1 EP0591679 B1 EP 0591679B1 EP 93114004 A EP93114004 A EP 93114004A EP 93114004 A EP93114004 A EP 93114004A EP 0591679 B1 EP0591679 B1 EP 0591679B1
Authority
EP
European Patent Office
Prior art keywords
lever
yoke
switch according
pivotal
switch
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
EP93114004A
Other languages
German (de)
French (fr)
Other versions
EP0591679A1 (en
Inventor
Siegfried Schulte
Manfred Aulmann
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.)
Modelec SA
Original Assignee
Schulte Elektrotechnik GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schulte Elektrotechnik GmbH and Co KG filed Critical Schulte Elektrotechnik GmbH and Co KG
Publication of EP0591679A1 publication Critical patent/EP0591679A1/en
Application granted granted Critical
Publication of EP0591679B1 publication Critical patent/EP0591679B1/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
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/48—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having both electrothermal and electromagnetic automatic release
    • H01H73/52—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having both electrothermal and electromagnetic automatic release reset by tumbler
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041—Details concerning assembly of relays
    • H01H50/042—Different parts are assembled by insertion without extra mounting facilities like screws, in an isolated mounting part, e.g. stack mounting on a coil-support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0221—Majority of parts mounted on central frame or wall
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/46—Automatic release mechanisms with or without manual release having means for operating auxiliary contacts additional to the main contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/12—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by voltage falling below a predetermined value, e.g. for no-volt protection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
    • H01H83/226—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages with differential transformer

Definitions

  • the invention relates to an electrical switch with a transmission linkage actuated by a rocker, which is coupled to a slide carrying contacts and which contains a release lever which interacts with a latching piece.
  • the object of the invention is to provide a switch with high latching force and safe unlatching.
  • the transmission linkage is designed as a toggle lever, to the knee joint of which the rocker is coupled and the first lever of which is articulated in a bearing fixed to the housing and the second lever of which is designed as a latching lever for a pivoting lever which is effective in the over-center position of the toggle lever, that the pivot lever engages in the slide, that a yoke lever is designed as a release lever for the second lever of the toggle lever and as an abutment for a compression spring, that the latching piece mechanically or electromagnetically latches the yoke lever and that the compression spring on the one hand the slide and the pivot lever coupled therewith Prestressed switch-off position and on the other hand provides the clamping force for the yoke lever to trigger the switch.
  • the invention differs from the prior art in that a spring is used both for tripping and for contact separation.
  • the yoke lever is held mechanically in the switch-on position during the switch-on process until the latch becomes effective.
  • Electromagnetic latching is achieved in that the yoke lever comprises an armature for an electromagnet.
  • the ready position of the electronic monitoring circuit is reached during the switch-on process.
  • the electromagnet then holds the yoke lever in place.
  • a quick release is achieved in that the swiveling latching piece interacts with a magnetic quick release.
  • An undervoltage release is also easily possible in that the pivotable latching piece interacts with an undervoltage release.
  • a tilt-free guidance of the levers is achieved in that the pivot lever has two arms, between which the yoke lever and the lever of the toggle lever are guided.
  • the yoke lever is secured during the switch-on process in that a profile shoulder of the first lever of the knee joint engages with a profile shoulder of the yoke lever.
  • each profile approach has a circular profile section and a cam.
  • a leading contact for the electronic circuit when switching on is ensured in that the pivot lever carries a limited movable contact bridge, which cooperates with contacts on the circuit board.
  • a safe triggering is ensured in that the yoke lever interacts with an extension of the second lever of the knee joint.
  • a housing 1 with the switch is accommodated in a receiving chamber 2 of a mounting frame 3 with a support ring 4.
  • Locking lugs 47 serve for locking.
  • the housing 1 has side walls 5 in which the functional parts of the switch are mounted and / or guided. The parts of the switch are mounted in the housing 1.
  • the switch is used as a pre-assembled unit in the receiving chamber 2.
  • the essential functional parts of the switch are a slide 6 with contacts 7, which face fixed contacts 8.
  • the slide 6 is coupled to an arm 9 of a pivot lever 10.
  • a second lever 11 of a toggle lever engages in the pivot lever 10, the first lever 12 of which is fixed to the housing.
  • the knee joint 13 connecting the two levers 11 and 12 is coupled to the rocker 14, which in turn is mounted fixed to the housing.
  • a yoke lever 15 is provided as a release lever, which carries the armature 16 of an electromagnet 17 which acts as a latching piece.
  • the housing 1 accommodates the electromagnet 17 in guides 18.
  • the electromagnet 17 is immovable and tilt-free in the guides of the housing 1.
  • the yoke lever 15 is supported on one side with pins 19 in the side walls 5.
  • the armature 16 sits at the other end of the yoke lever 15.
  • the yoke lever 15 carries a profile projection 20 with a circular porofoil section 22 which is oriented essentially concentrically to the axis 21 of the first lever 12 of the toggle lever and a subsequent cam section 23.
  • the yoke lever 15 takes on an attachment 24
  • Helical compression spring 26 which on the other hand is supported on a receptacle 25 of the slide 6. This Schralbdruckfeder 26 causes both the triggering and the contact separation or switching off. In the tripped state, the yoke lever 15 engages against a stop 46 of the pivoting lever 10.
  • the slide 6 carries three contacts 7 for a three-pole circuit. Details of the contacts are not shown.
  • the arm 9 of the pivot lever 10 engages in a window 27 of the slide 6.
  • the window 27 and the arm 9 can each be provided in pairs.
  • the pivot lever 10 has an opening 28 with a locking lug 29 with which a locking lug 30 of the second lever 11 of the toggle lever acting as a locking lever interacts.
  • the second lever 11 also has a shoulder 31 with which the yoke lever 15 cooperates during the triggering process, which will be explained in more detail.
  • the profile shoulder 32 interacts with the profile shoulder 20 of the yoke lever 15.
  • a circuit board 35 receives electrical components and a converter 36 for current measurement, in particular fault current measurement.
  • Two contacts 37 are arranged on the printed circuit board, with which a U-shaped contact bridge 38 interacts.
  • the legs 40 of the contact bridge 38 are guided in circular arc guides 41 in the end part of the pivot lever 10 so as to be displaceable in the pivoting direction thereof and are prestressed by a spring 39. Noses 43 of the legs come into contact with stops 42 of the circular arc guides 41.
  • the side walls 5 engage with hooks 44 in slots 45 of the circuit board 35. This achieves a stabilization of the arrangement.
  • the parts of the switch can be arranged in the housing 1 by inserting, inserting and pressing them in. It is secured and held by stops and catches.
  • the housing 1 with the circuit board 35 is inserted into the receiving chamber 2 of the mounting frame 3 and fixed by the locking lugs 47.
  • the switch is ready for installation or ready for connection. It can be inserted in an installation box or device housing.
  • the yoke lever 15 is held in the position shown by the circular profile sections 22 and 33, where the armature 16 is located at a short distance from the pole faces of the electromagnet 17.
  • the locking lug 30 of the lever 11 lies against the locking lug 29.
  • the rocker 14 is in the off position.
  • the contact bridge 38 is raised from the contacts 37 because the lugs 43 abut the stops 42. As a result, the circuit board 35 is turned off.
  • the rocker 14 When switching on, the rocker 14 is pivoted in the counterclockwise direction with reference to FIGS. 1 and 2. The knee joint is stretched. The pivot lever 10 is pivoted clockwise. After a very short swivel path, the contact bridge 38 comes into engagement with the contacts 37, so that a circuit for exciting the circuits on the printed circuit board 35 is closed. The circuits are ready for operation.
  • the switch-on time is in any case less than the switching time of the rocker, so that the standby state is safely reached. With the further switch-on movement on the one hand raised by the arms 9 of the slide 6, so that the contacts 7 and 8 close and the spring 26 is tensioned. On the other hand, the yoke lever 15 is held down under the action of the circular profile sections 22 and 33.
  • the electromagnet receives power through the electronic circuit.
  • the cams 23 and 34 press the yoke lever 15 against the electromagnet 17, so that the armature 16 is securely tightened and the yoke lever 15 is latched.
  • the switch is latched in the switched-on state by the electromagnet 17.
  • the electronic circuit continuously monitors the current, especially the fault current.
  • a trigger signal is issued.
  • the electromagnet 17 is de-energized.
  • the yoke lever 15 is raised under the action of the spring 26 or pivoted in the counterclockwise direction, so that the yoke lever 15 abuts the shoulder 31 and lifts the lever 11.
  • the stop 467 limits the movement of the yoke lever 15.
  • the locking lug 30 is lifted out of the locking lug 29.
  • the spring 26 pushes the slide 6 downward and thereby separates the contacts.
  • the pivot lever 10 is carried in the counterclockwise direction.
  • the contact bridge 38 is lifted from the contacts 37, so that the electronic circuit is de-energized.
  • Fig. 7 shows an embodiment with a lever-like latching piece 50 which is pivotable about an axis 54.
  • a latching nose 55 interacts with a nose 56 of the yoke lever 15. So this switch has a mechanical latch.
  • the release of the latching piece 50 can take place thermally by means of a bimetal release 51, that is to say by overcurrent.
  • a megantic quick release 52 or an undervoltage release 53 can be provided. Otherwise, the switching function corresponds to the embodiment described above.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Lifting Devices For Agricultural Implements (AREA)

Description

Die Erfindung betrifft einen elektrischen Schalter mit einem von einer Wippe betätigten Übertragungsgestänge, das mit einem Kontakte tragenden Schieber gekoppelt ist und das einen mit einem Verklinkungsstück zusammenwirkenden Auslösehebel enthält.The invention relates to an electrical switch with a transmission linkage actuated by a rocker, which is coupled to a slide carrying contacts and which contains a release lever which interacts with a latching piece.

Aufgabe der Erfindung ist die Bereitstellung eines Schalters mit hoher Verklinkungskraft und sicherer Entklinkung.The object of the invention is to provide a switch with high latching force and safe unlatching.

Diese Aufgabe wird nach der Erfindung dadurch gelöst, daß das Übertragungsggestänge als Kniehebel ausgebildet ist, mit dessen Kniegelenk die Wippe gekoppelt ist und dessen erster Hebel in einem gehäusefesten Lager angelenkt und dessen zweiter Hebel als in Übertotpunktstellung des Kniehebels wirksamer Rasthebel für einen Schwenkhebel ausgebildet ist, daß der Schwenkhebel in den Schieber eingreift, daß ein Jochhebel als Auslösehebel für den zweiten Hebel des Kniehebels und als Widerlager für eine Druckfeder ausgebildet ist, daß das Verklinkungsstück den Jochhebel mechanisch oder elektromagnetisch verklinkt und daß die Druckfeder einerseits den Schieber und den damit gekoppelten Schwenkhebel in Ausschaltstellung vorspannt und andererseits die Spannkraft für den Jochhebel zur Auslösung des Schalters liefert.This object is achieved according to the invention in that the transmission linkage is designed as a toggle lever, to the knee joint of which the rocker is coupled and the first lever of which is articulated in a bearing fixed to the housing and the second lever of which is designed as a latching lever for a pivoting lever which is effective in the over-center position of the toggle lever, that the pivot lever engages in the slide, that a yoke lever is designed as a release lever for the second lever of the toggle lever and as an abutment for a compression spring, that the latching piece mechanically or electromagnetically latches the yoke lever and that the compression spring on the one hand the slide and the pivot lever coupled therewith Prestressed switch-off position and on the other hand provides the clamping force for the yoke lever to trigger the switch.

Die Erfindung unterscheidet sich insofern vom Stand der Technik, als eine Feder sowohl zur Auslösung als auch zur Kontakttrennung benutzt wird. Der Jochhebel wird während des Einschaltvorgang mechanisch in Einschaltstellung gehalten, bis die Verklinkung wirksam wird.The invention differs from the prior art in that a spring is used both for tripping and for contact separation. The yoke lever is held mechanically in the switch-on position during the switch-on process until the latch becomes effective.

Eine elektromagnetische Verklinkung wird dadurch erzielt, daß der Jochhebel einen Anker für einen Elektromagneten umfaßt. Während des Einschaltvorgangs wird die Bereitschaftstellung der elektronischen Überwachungsschaltung erreicht. Die Festhaltung des Jochhebels wird dann von dem Elektromagneten übernommen.Electromagnetic latching is achieved in that the yoke lever comprises an armature for an electromagnet. The ready position of the electronic monitoring circuit is reached during the switch-on process. The electromagnet then holds the yoke lever in place.

Einen Überlastsschutz erreicht man dadurch, daß das schwenkbare Verklinkungsstück mit einem thermischen Bimetallauslöser zusammenwirkt.Overload protection is achieved in that the pivotable latching piece interacts with a thermal bimetallic release.

Eine Schnellauslösung erreicht man dadurch, daß das schwenkbare Verklinkungsstück mit einem magnetischen Schnellauslöser zusammenwirkt.A quick release is achieved in that the swiveling latching piece interacts with a magnetic quick release.

Auch eine Unterspannungauslösung ist ohne weiteres dadurch möglich, daß das schwenkbare Verklinkungsstück mit einem Unterspannungauslöser zusammenwirkt.An undervoltage release is also easily possible in that the pivotable latching piece interacts with an undervoltage release.

Eine verkantungsfreie Führung der Hebel wird dadurch erreicht, daß der Schwenkhebel zwei Arme aufweist, zwischen denen der Jochhebel und der Hebel des Kniehebels geführt sind.A tilt-free guidance of the levers is achieved in that the pivot lever has two arms, between which the yoke lever and the lever of the toggle lever are guided.

Eine Sicherung des Jochhebels während des Einschaltvorgangs wird dadurch erreicht, daß ein Profilansatz des ersten Hebels des Kniegelenks mit einem Profilansatz des Jochhebels in Eingriff ist.The yoke lever is secured during the switch-on process in that a profile shoulder of the first lever of the knee joint engages with a profile shoulder of the yoke lever.

Ein sicherer Schluß des Magnetkreises wird dadurch erreicht, daß jeder Profilansatz einen Kreisprofilabschnitt und einen Nocken aufweist.A secure conclusion of the magnetic circuit is achieved in that each profile approach has a circular profile section and a cam.

Eine voreilende Kontaktgabe für die elektronische Schaltung beim Einschaltvorgang wird dadurch sichergestellt, daß der Schwenkhebel eine begrenzt bewegliche Kontaktbrücke trägt, die mit Kontakten der Leiterplatte zusammenwirkt.A leading contact for the electronic circuit when switching on is ensured in that the pivot lever carries a limited movable contact bridge, which cooperates with contacts on the circuit board.

Eine sichere Auslösung wird dadurch gewährleistet, daß der Jochhebel mit einem Ansatz des zweiten Hebels des Kniegelenks zusammenwirkt.A safe triggering is ensured in that the yoke lever interacts with an extension of the second lever of the knee joint.

Ausführungsbeispiele der Erfindung sind im Folgenden unter Bezugnahme auf die Zeichnungen erläutert, in denen darstellen:

Fig. 1
den Schalter in einem Einbaurahmen,
Fig. 2
einen schematisierten Schnitt durch einen Schalter in Ausschaltstellung,
Fig. 3
eine der Fig. 2 entsprechende perspektivische Darstellung,
Fig. 4
eine perspektivische Darstellung der Einschaltstellung,
Fig. 5
eine Schnittdarstellung der Auslösestellung,
Fig. 6
einen Schnitt nach der Linie VI-VI in Fig. 2 und
Fig. 7
einen Schnitt durch ein abgewandeltes Ausführungsbeispiel.
Exemplary embodiments of the invention are explained below with reference to the drawings, in which:
Fig. 1
the switch in a mounting frame,
Fig. 2
a schematic section through a switch in the off position,
Fig. 3
2 shows a perspective view corresponding to FIG. 2,
Fig. 4
a perspective view of the switch-on position,
Fig. 5
a sectional view of the release position,
Fig. 6
a section along the line VI-VI in Fig. 2 and
Fig. 7
a section through a modified embodiment.

Ein Gehäuse 1 mit dem Schalter findet in einer Aufnahmekammer 2 eines Einbaurahmens 3 mit Tragring 4 Aufnahme. Zur Verrieglung dienen Rastnasen 47. Das Gehause 1 weist Seitenwände 5 auf, in denen die Funktionsteile des Schalters gelagert und/oder geführt sind. Die Teile des Schalters werden in dem Gehäuse 1 montiert. Der Schalter wird als vormontierte Baueinheit in die Aufnahmekammer 2 eingesetzt.A housing 1 with the switch is accommodated in a receiving chamber 2 of a mounting frame 3 with a support ring 4. Locking lugs 47 serve for locking. The housing 1 has side walls 5 in which the functional parts of the switch are mounted and / or guided. The parts of the switch are mounted in the housing 1. The switch is used as a pre-assembled unit in the receiving chamber 2.

Die wesentlichen Funktionsteile des Schalters sind ein Schieber 6 mit Kontakten 7, die Festkontakten 8 gegenüberstehen. Der Schieber 6 ist mit einem Arm 9 eines Schwenkhebels 10 gekoppelt. In den Schwenkhebel 10 greift ein zweiter Hebel 11 eines Kniehebels ein, dessen erster Hebel 12 gehäusefest gelagert ist. Das die beiden Hebel 11 und 12 verbindende Kniegelenk 13 ist mit der Wippe 14 gekoppelt, die ihrerseits gehäusefest gelagert ist. Außerdem ist als Auslösehebel ein Jochhebel 15 vorgesehen, der den Anker 16 eines als Verklinkungsstück wirksamen Elektromagneten 17 trägt.The essential functional parts of the switch are a slide 6 with contacts 7, which face fixed contacts 8. The slide 6 is coupled to an arm 9 of a pivot lever 10. A second lever 11 of a toggle lever engages in the pivot lever 10, the first lever 12 of which is fixed to the housing. The knee joint 13 connecting the two levers 11 and 12 is coupled to the rocker 14, which in turn is mounted fixed to the housing. In addition, a yoke lever 15 is provided as a release lever, which carries the armature 16 of an electromagnet 17 which acts as a latching piece.

Das Gehäuse 1 nimmt in Führungen 18 den Elektromagneten 17 auf. Der Elektromagnet 17 liegt unverschiebbar und verkantungsfrei in den Führungen des Gehäuses 1.The housing 1 accommodates the electromagnet 17 in guides 18. The electromagnet 17 is immovable and tilt-free in the guides of the housing 1.

Der Jochhebel 15 ist einseitig mit Zapfen 19 in den Seitenvänden 5 gelagert. Der Anker 16 sitzt am anderen Ende des Jochhebels 15. Der Jochhebel 15 trägt einen Profilansatz 20 mit einem im wesentlichen konzentrisch zur Achse 21 des ersten Hebels 12 des Kniehebels ausgerichteten Kreisporofilabschnitt 22 und einem anschließenden Nockenabschnitt 23. Der Jochhebel 15 nimmt auf einem Anastz 24 eine Schraubendruckfeder 26 auf, die sich andererseits auf einer Aufnahme 25 des Schiebers 6 abstützt. Diese Schralbendruckfeder 26 bewirkt sowohl die Auslösung als auch die Kontakttrennung beziehungsweise Ausschaltung. Im Auslösezustand kopmmt der Jochhebel 15 an einem Anschlag 46 des Schwenkhebels 10 zur Anlage.The yoke lever 15 is supported on one side with pins 19 in the side walls 5. The armature 16 sits at the other end of the yoke lever 15. The yoke lever 15 carries a profile projection 20 with a circular porofoil section 22 which is oriented essentially concentrically to the axis 21 of the first lever 12 of the toggle lever and a subsequent cam section 23. The yoke lever 15 takes on an attachment 24 Helical compression spring 26, which on the other hand is supported on a receptacle 25 of the slide 6. This Schralbdruckfeder 26 causes both the triggering and the contact separation or switching off. In the tripped state, the yoke lever 15 engages against a stop 46 of the pivoting lever 10.

Der Schieber 6 trägt drei Kontakte 7 für eine dreipolige Schaltung. Einzelheiten der Kontakte sind nicht dargestellt. In ein Fenster 27 des Schiebers 6 greift der Arm 9 des Schwenkhebels 10 ein. Das Fenster 27 und der Arm 9 können jeweils paarweise vorgesehen sein. Der Schwenkhebel 10 hat einen Durchbruch 28 mit einer Sperrnase 29, mit der eine Rastnase 30 des als Rasthebel wirkenden zweiten Hebel 11 des Kniehebels zusammenwirkt. Der zweite Hebel 11 hat auch einen Ansatz 31 mit dem der Jochhebel 15 beim Auslösevorgang zusammenwirkt, was noch im Einzelnen erläutert wird.The slide 6 carries three contacts 7 for a three-pole circuit. Details of the contacts are not shown. The arm 9 of the pivot lever 10 engages in a window 27 of the slide 6. The window 27 and the arm 9 can each be provided in pairs. The pivot lever 10 has an opening 28 with a locking lug 29 with which a locking lug 30 of the second lever 11 of the toggle lever acting as a locking lever interacts. The second lever 11 also has a shoulder 31 with which the yoke lever 15 cooperates during the triggering process, which will be explained in more detail.

An dem ersten Hebel 12 sitzt ein Profilansatz 32 mit einem zur Achse 21 konzentrisch verlaufenden Kreisprofilabschnitt 33 und einem anschließenden Nocken 34. Der Profilanstz 32 wirkt mit dem Profilansatz 20 des Jochhebels 15 zusammen.On the first lever 12 there is a profile shoulder 32 with a circular profile section 33 which is concentric with the axis 21 and a subsequent cam 34. The profile shoulder 32 interacts with the profile shoulder 20 of the yoke lever 15.

Eine Leiterplatte 35 nimmt elektrische Bauelemente und einen Wandler 36 für die Strommessung, insbesondere Fehlerstrommessung auf. Auf der Leiterplatte sind zwei Kontakte 37 angeordnet, mit denen eine U-förmige Kontaktbrücke 38 zusammenwirkt. Die Schenkel 40 der Kontaktbrücke 38 sind in Kreisbogenführungen 41 im Endteil des Schwenkhebels 10 in Schwenkrichtung desselben verschiebbar geführt und durch eine Feder 39 vorgespannt. Nasen 43 der Schenkel kommen an Anschlägen 42 der Kreisbogenführungen 41 in Anlage.A circuit board 35 receives electrical components and a converter 36 for current measurement, in particular fault current measurement. Two contacts 37 are arranged on the printed circuit board, with which a U-shaped contact bridge 38 interacts. The legs 40 of the contact bridge 38 are guided in circular arc guides 41 in the end part of the pivot lever 10 so as to be displaceable in the pivoting direction thereof and are prestressed by a spring 39. Noses 43 of the legs come into contact with stops 42 of the circular arc guides 41.

Die Seitenwände 5 greifen mit Hakenansätzen 44 in Schlitze 45 der Leiterplatte 35 ein. Dadurch erreicht man eine Stabilisierung der Anordnung.The side walls 5 engage with hooks 44 in slots 45 of the circuit board 35. This achieves a stabilization of the arrangement.

Die Teile des Schalters lassen sich durch Einschieben, Einstecken und Eindrücken in dem Gehäuse 1 anordnen. Die Sicherung und Halterung erfolgt durch Anschläge und Rasten. Das Gehäuse 1 mit der Leiterplatte 35 wird in die Aufnahmekammer 2 des Einbaurahmens 3 eingeschoben und durch die Rastnasen 47 fixiert. Der Schalter ist so einbaufertig beziehungsweise anschlußfertig. Er kann in eine Installationsdose oder ein Gerätegehäuse eingesetzt werden.The parts of the switch can be arranged in the housing 1 by inserting, inserting and pressing them in. It is secured and held by stops and catches. The housing 1 with the circuit board 35 is inserted into the receiving chamber 2 of the mounting frame 3 and fixed by the locking lugs 47. The switch is ready for installation or ready for connection. It can be inserted in an installation box or device housing.

Die Fig. 1 und 2 zeigen die Ausschaltstellung. Der Jochhebel 15 wird durch die Kreisprofilabschnitte 22 und 33 in der dargestellten Lage gehalten, wo sich der Anker 16 in geringem Abstand von den Polflächen des Elektromagneten 17 befindet. Die Rastnase 30 des Hebels 11 liegt an der Sperrnase 29 an. Die Wippe 14 befindet sich in der Aus-Stellung. Die Kontaktbrücke 38 ist von den Kontakten 37 abgehoben, da die Nasen 43 an den Anschlägen 42 anliegen. Infolgedessen ist die Leiterplatte 35 ausgeschaltet.1 and 2 show the off position. The yoke lever 15 is held in the position shown by the circular profile sections 22 and 33, where the armature 16 is located at a short distance from the pole faces of the electromagnet 17. The locking lug 30 of the lever 11 lies against the locking lug 29. The rocker 14 is in the off position. The contact bridge 38 is raised from the contacts 37 because the lugs 43 abut the stops 42. As a result, the circuit board 35 is turned off.

Beim Einschaltvorgang wird die Wippe 14 in Gegenuhrzeigerrichtung bezogen auf Fig. 1 und 2 verschwenkt. Dabei wird das Kniegelenk gestreckt. Der Schwenkhebel 10 wird in Uhrzeigerrichtung verschwenkt. Bereits nach einem sehr geringen Schwenkweg kommt die Kontaktbrücke 38 mit den Kontakte 37 in Eingriff, so daß ein Stromkreis zur Erregung der Schaltkreise auf der Leiterplatte 35 geschlossen wird. Die Schaltkreise kommen in Betriebsbereitschaft. Die Einschaltzeit ist in jedem Fall geringer als die Schaltzeit der Wippe, so daß der Bereitschaftszustand sicher erreicht wird. Bei der weiteren Einschaltbewegung wird einerseits durch die Arme 9 der Schieber 6 angehoben, so daß die Kontakte 7 und 8 schließen und die Feder 26 gespannt wird. Andererseits wird der Jochhebel 15 unter der Einwirkung der Kreisprofilabschnitte 22 und 33 niedergehalten. Inzwischen erhält der Elektromagnet über die elektronische Schaltung Strom. Die Nocken 23 und 34 drücken den Jochhebel 15 gegen den Elektromagneten 17, so daß der Anker 16 sicher angezogen und der Jochhebel 15 verklinkt wird. Durch den Elektromagneten 17 wird der Schalter im Einschaltzustand verklinkt. Die elektronische Schaltung überwacht fortwährend den Strom, insbesondere den Fehlerstrom.When switching on, the rocker 14 is pivoted in the counterclockwise direction with reference to FIGS. 1 and 2. The knee joint is stretched. The pivot lever 10 is pivoted clockwise. After a very short swivel path, the contact bridge 38 comes into engagement with the contacts 37, so that a circuit for exciting the circuits on the printed circuit board 35 is closed. The circuits are ready for operation. The switch-on time is in any case less than the switching time of the rocker, so that the standby state is safely reached. With the further switch-on movement on the one hand raised by the arms 9 of the slide 6, so that the contacts 7 and 8 close and the spring 26 is tensioned. On the other hand, the yoke lever 15 is held down under the action of the circular profile sections 22 and 33. In the meantime, the electromagnet receives power through the electronic circuit. The cams 23 and 34 press the yoke lever 15 against the electromagnet 17, so that the armature 16 is securely tightened and the yoke lever 15 is latched. The switch is latched in the switched-on state by the electromagnet 17. The electronic circuit continuously monitors the current, especially the fault current.

Im Falle eines Störzustandes wird ein Auslösesignal abgegeben. Zur Auslösung wird der Elektromagnet 17 stromlos. Der Jochhebel 15 wird unter der Wirkung der Feder 26 angehoben beziehungsweise in Gegenuhrzeigerrichtung verschwenkt, so daß der Jochhebel 15 an den Ansatz 31 stößt und den Hebel 11 anhebt. Der Anschlag 467 begrenzt die Bewegung des Jochhebels 15. Die Rastnase 30 wird aus der Sperrnase 29 ausgehoben. Die Feder 26 drückt den Schieber 6 nach unten und trennt dadurch die Kontakte. Dabei wird der Schwenkhebel 10 in Gegenuhrzeigerrichtung mitgenommen. Die Kontaktbrücke 38 wird von den Kontakten 37 abgehoben, so daß die elektronische Schaltung stromlos wird.In the event of a malfunction, a trigger signal is issued. To trigger the electromagnet 17 is de-energized. The yoke lever 15 is raised under the action of the spring 26 or pivoted in the counterclockwise direction, so that the yoke lever 15 abuts the shoulder 31 and lifts the lever 11. The stop 467 limits the movement of the yoke lever 15. The locking lug 30 is lifted out of the locking lug 29. The spring 26 pushes the slide 6 downward and thereby separates the contacts. The pivot lever 10 is carried in the counterclockwise direction. The contact bridge 38 is lifted from the contacts 37, so that the electronic circuit is de-energized.

Ein Wiedereinschalten ist in dieser Auslösestellung nicht möglich. Der Schalter muß zunächst in die Ausschaltstellung gebracht werden. Erst dann ist ein neues Einschalten möglich.It is not possible to switch on again in this release position. The switch must first be set to the off position. Only then can it be switched on again.

Fig. 7 zeigt ein Ausführungsbeispiel mit einem hebelartigen Verklinkungsstück 50, das um eine Achse 54 schwenkbar ist. Eine Verklinkungsnase 55 wirkt mit einer Nase 56 des Jochhebels 15 zusammen. Diesr Schalter hat also eine mechanische Verklinkung.Fig. 7 shows an embodiment with a lever-like latching piece 50 which is pivotable about an axis 54. A latching nose 55 interacts with a nose 56 of the yoke lever 15. So this switch has a mechanical latch.

Die Auslösung des Verklinkungsstücks 50 kann thermisch durch einen Bimetallauslöser 51 also durch Überstrom erfolgen. In anderer Weise kann man einen megantischen Schnellauslöser 52 oder einen Unterspannungsauslöser 53 vorsehen. Im übrigen entspricht die Schaltfunktion dem oben beschriebenen Ausführungsbeispiel.The release of the latching piece 50 can take place thermally by means of a bimetal release 51, that is to say by overcurrent. In another way, a megantic quick release 52 or an undervoltage release 53 can be provided. Otherwise, the switching function corresponds to the embodiment described above.

Claims (10)

  1. An electrical switch having a transmission linkage which is actuated by a rocker (14), is coupled to a slide (6) carrying contacts and contains a release lever cooperating with a latching piece (50), characterized in that the transmission linkage is constructed as a toggle lever, to whose toggle joint (13) the rocker (14) is coupled and whose first lever (12) is articulated at a bearing fixed to the housing and whose second lever (11) is constructed as a catching lever, effective in the top dead centre position of the toggle lever, for a pivotal lever (10), in that the pivotal lever (10) engages in the slide (6), in that a yoke-shaped lever (15) is constructed as a release lever for the second lever (11) of the toggle lever and as an abutment for a pressure spring (26), in that the latching piece (50) mechanically or electromagnetically latches the yoke-shaped lever, and in that the pressure spring (26) on the one hand pre-tensions the slide (6) and the pivotal lever (10) coupled thereto, in the switched-off position, and on the other hand supplies the tensioning force for the yoke-shaped lever (15) for releasing the switch.
  2. A switch according to Claim 1, characterized in that the yoke-shaped lever (15) comprises an armature (16) for an electromagnet (17).
  3. A switch according to Claim 1, characterized in that the pivotal latching piece (50) cooperates with the thermal bimetallic release element (51).
  4. A switch according to Claim 1, characterized in that the pivotal latching piece (50) cooperates with a magnetic quick-release element (52).
  5. A switch according to Claim 1, characterized in that the pivotal latching piece (50) cooperates with an undervoltage release element (53).
  6. A switch according to one of Claims 1 to 5, characterized in that the pivotal lever (10) has two arms (9), between which the yoke-shaped lever (15) and the lever (11) are guided.
  7. A switch according to one of Claims 1 to 6, characterized in that a profiled protuberance (32) on the first lever (12) of the toggle joint is in engagement with a profiled protuberance (20) on the yoke-shaped lever (15).
  8. A switch according to Claim 7, characterized in that each profiled protuberance has a circular-profile section (22, 33) and a cam (23, 34).
  9. A switch according to one of Claims 1 to 8, characterized in that the pivotal lever (10) carries a contact bridge (38) which is movable to a limited extent and cooperates with contacts (37) on the printed circuit board (35).
  10. A switch according to one of Claims 1 to 9, characterized in that the yoke-shaped lever (15) cooperates with a protuberance (31) on the second lever (11) of the toggle joint.
EP93114004A 1992-10-08 1993-09-02 Circuit interrupter with current monitoring Expired - Lifetime EP0591679B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4233918A DE4233918B4 (en) 1992-10-08 1992-10-08 Electrical switch with current monitoring
DE4233918 1992-10-08

Publications (2)

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EP0591679A1 EP0591679A1 (en) 1994-04-13
EP0591679B1 true EP0591679B1 (en) 1996-12-11

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ID=6469978

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EP93114004A Expired - Lifetime EP0591679B1 (en) 1992-10-08 1993-09-02 Circuit interrupter with current monitoring

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US (1) US5369385A (en)
EP (1) EP0591679B1 (en)
AU (1) AU4735793A (en)
DE (2) DE4233918B4 (en)
ES (1) ES2095538T3 (en)

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US7180702B2 (en) * 2004-03-09 2007-02-20 Tandberg Data Cop. Data cartridges handler including a ring-shaped carousel and a picker within the inner periphery of the carousel
US7777986B2 (en) * 2007-05-11 2010-08-17 Tandberg Data Corporation Multi-dimensional transport method and drive subsystems in a cartridge library apparatus
US7777985B2 (en) * 2007-05-11 2010-08-17 Tandberg Data Corporation Transport method and apparatus for cartridge library utilizing cam slot and follower for moving a robot carriage
US20080282281A1 (en) * 2007-05-11 2008-11-13 White Christopher M Cartridge engagement apparatus and method for cartridge library
US20080282275A1 (en) * 2007-05-11 2008-11-13 Zaczek Thomas E Entry/exit port method and apparatus for cartridge library
US20080278847A1 (en) * 2007-05-11 2008-11-13 Barkley John A Method and apparatus for positioning drives in cartridge library
KR101869724B1 (en) * 2017-01-05 2018-06-21 엘에스산전 주식회사 Magnetic trip device for circuit breaker
KR102299858B1 (en) * 2017-03-15 2021-09-08 엘에스일렉트릭 (주) Magnetic trip mechanism for circuit breaker
US10468219B2 (en) * 2017-09-07 2019-11-05 Carling Technologies, Inc. Circuit interrupter with status indication

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Also Published As

Publication number Publication date
EP0591679A1 (en) 1994-04-13
ES2095538T3 (en) 1997-02-16
AU4735793A (en) 1994-04-21
DE59304740D1 (en) 1997-01-23
DE4233918B4 (en) 2004-02-26
DE4233918A1 (en) 1994-04-14
US5369385A (en) 1994-11-29

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