EP1096529B1 - Protective electrical circuit-breaker - Google Patents

Protective electrical circuit-breaker Download PDF

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Publication number
EP1096529B1
EP1096529B1 EP00117609A EP00117609A EP1096529B1 EP 1096529 B1 EP1096529 B1 EP 1096529B1 EP 00117609 A EP00117609 A EP 00117609A EP 00117609 A EP00117609 A EP 00117609A EP 1096529 B1 EP1096529 B1 EP 1096529B1
Authority
EP
European Patent Office
Prior art keywords
tripping
magnet armature
circuit breaker
armature
spring
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
EP00117609A
Other languages
German (de)
French (fr)
Other versions
EP1096529A1 (en
Inventor
Manfred Faust
Klaus Dauer
Lothar Winzen
Günter Baujen
Rudolf Baumeister
Volker Blechacz
Peter Willerscheidt
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.)
Eaton Industries GmbH
Original Assignee
Moeller GmbH
Kloeckner Moeller GmbH
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 Moeller GmbH, Kloeckner Moeller GmbH filed Critical Moeller GmbH
Publication of EP1096529A1 publication Critical patent/EP1096529A1/en
Application granted granted Critical
Publication of EP1096529B1 publication Critical patent/EP1096529B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/12Automatic release mechanisms with or without manual release
    • H01H71/24Electromagnetic mechanisms
    • H01H71/2409Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/12Automatic release mechanisms with or without manual release
    • H01H71/24Electromagnetic mechanisms
    • H01H2071/249Electromagnetic mechanisms with part of the magnetic circuit being in the normal current path in the circuit breaker, e.g. yoke, fixed contact and arc-runner are made out of one single conductive element
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/12Automatic release mechanisms with or without manual release
    • H01H71/24Electromagnetic mechanisms
    • H01H71/2463Electromagnetic mechanisms with plunger type armatures
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/12Automatic release mechanisms with or without manual release
    • H01H71/46Automatic release mechanisms with or without manual release having means for operating auxiliary contacts additional to the main contacts

Definitions

  • the invention relates to an electrical circuit breaker, in particular Motor protection switch, according to the preamble of claim 1.
  • circuit breakers From DE 42 08 716 C2 or from EP 0 333 650 A such switching devices are already known. These circuit breakers also have an insulating material with a Switching device and a trip unit with a short circuit sensitive electromagnetic quick release on.
  • AGM modules tripping detector
  • the invention is based on the object, a generic switching device to create, which is so improved in its construction that a Universal use of auxiliary blocks that provide an interface to the Tripping bridge, is possible.
  • Fig. 1 shows an electrical circuit breaker 1, in particular Motor protection switch, with a rotary drive and a rotary head 11 for on and Switching off and displaying tripping in case of overload or short circuit and with a housing 12 which is divided into three housing parts 13, 14, 15.
  • the middle one Housing part 14 has cable entry openings 16 with cable clamps 17.
  • Fig. 2 shows the trip unit of the invention Protective switching device in an exploded view. It includes the Tripping unit a parts carrier 5, to which a connecting piece 6 can be fastened.
  • the parts carrier 5 is advantageously made of a thermoplastic plastic.
  • the connecting piece 6 is made of copper and is L-shaped, wherein the lower outwardly directed leg 18 is provided as a contact tapping for the cable clamp 17.
  • the parts carrier 5 has a fixing pin 23 which projects into a corresponding recess on the lower leg 18 of the connecting piece 6.
  • the upper leg 21 is provided with a connection zone 19 for connection of an overcurrent or bimetallic release 9.
  • a heating conductor 22 in particular by means of a plasma or inert gas welding connection, connected via the connection zone 19 with the connecting piece 6.
  • the heating element 22 is placed in a known manner spirally around a bimetal 8 and at its other free end, preferably also by means of a plasma or inert gas welding connection, connected to the bimetal 8.
  • the inert gas welding connection between the copper and the bimetal 8 which is very difficult to weld, establishes a secure connection, thereby eliminating quality problems in this respect.
  • the heating element 22 is welded to the passive side of the bimetal 8.
  • the passive side of the bimetal 8 is well suited for welding because only the active side is made of an alloy that is relatively difficult or impossible to weld.
  • the lower end of the bimetal 8 is connected to a yoke plate 28 at an outwardly bent tongue 33 perpendicular.
  • the yoke plate 28 consists of a substantially U-shaped region with two parallel side limbs 29, 31 and a transverse leg 30 connecting them holding the quick release 10, one at the second leg 31 at right angles integrally connected mounting portion 32 and a tongue 33rd
  • a fixing tab is arranged, which in a elongated, provided with Fixiernoppen, latching opening of the parts carrier. 5 intervenes. As a result, the yoke plate 28 is fastened in the part carrier 5.
  • the trip coil 38 of the quick release 10 is its one coil end with the contact element 7 and with its other coil end to the yoke plate 28 connected to the attachment portion 32.
  • the connection also takes place preferably by inert gas or plasma welding.
  • the parallel to the attachment portion 32 extending leg portion of the Contact element 7 is partially provided with recesses to Parts of the yoke plate 28 interlock. This will be extremely built to save space.
  • a slot motor 47 is pre-assembled.
  • the trip unit fixed only by gluing in the housing 12 (i.e. Screwing, locking, bracing or the like).
  • gluing in the housing 12 i.e. Screwing, locking, bracing or the like.
  • special Suitable splices have extensions on the voltage-carrying Share proved.
  • the flow of current in the arranged on the parts carrier 5 parts is made by the lower leg of the connector 6 to the weld Connecting zone 19 / heating element 22, then in the heating element 22nd up to the welded joint heating element 22 / bimetal 8, then via the bimetal 8 up to the welded joint bimetal 8 / yoke plate 28, then over the attachment portion 32 of the yoke plate 28 to the Weld connection attachment section 32 / trip coil 38, then about the winding of the trip coil 38 up to the weld joint Trip coil 38 / contact element 7 in the contact element 7 to Continuation of the current via the with the contact element. 7 cooperating movable contact element.
  • 3a shows a preassemblable unit with a receiving body 60, a Magnetic armature 62 and a spring element 64 in an exploded view.
  • the magnet armature 62 has a first part MA 1 , a second part MA 2 , and a third part MA 3 , wherein the second part MA 2 is arranged between the first part MA 1 and the third part MA 3 .
  • the armature 62 is formed substantially rod-shaped, with its lower part MA 1 has a nearly square cross-section and its upper part MA 2 is formed as a pin-shaped extension significantly lower and in particular circular cross-section.
  • the upper part MA 2 is advantageously not centric, but arranged offset from the center of the armature 62.
  • the upper part MA 2 is expanded by a preferably plate-like head piece 63.
  • the magnet armature 62 is made of a magnetizable material.
  • the magnet armature body (with the exception of the head piece 63) can for example be easily rotated from a square profile. It can be made by centering the material in the central axis of the square profile, the lower part MA 1 and centering of the material from the center of the profile, the upper part MA 2 manufactured (eg by turning on a lathe).
  • the receiving body 60 is made of insulating material and serves to accommodate the Magnetic armature 62 and the spring element 64.
  • the armature 62 nd longitudinally movable in the, substantially tubular, Receiving body 60 stored.
  • the spring element 64 which is preferably designed as a torsion spring and also in, respectively on, the receiving body 60 is arranged, the armature 62 is opposite its triggering movement direction (here: down) with a spring force applied.
  • the torsion spring supports with its one free end an abutment 66 of the receiving body 60. With her other free End behind the torsion spring engages behind the head 63 of the armature 62 and acts on this by a spring force against his Triggering movement direction.
  • the triggering element 81 is hook-shaped.
  • the receiving body 60 consists essentially of a lower, tubular section I and a head section II.
  • the section I is used in its upper part I 1 of the guide of the armature 62 and in its lower part I 2 of the attachment within the quick release 10.
  • the receiving body 60 in adaptation to the lower part MA 2 of the armature 62th the wall area narrowing the circular cross-section (according to FIG. 3b).
  • the receiving body 60 in its interior in adaptation to the cross section of the magnet armature 62, in particular circular, formed ( Figure 3c).
  • the armature 62 For the mounting of the armature 62 in the receiving body 60 of the armature 62 is preceded by its head 63, introduced from below into the lower part I 2 of the receiving body 60. In a preassembled rest position of the armature 62 is biased within the receiving body 60 by a free, under the head piece 63 of the armature 62 cross, end of the torsion spring against the Auslensezisraum. In this case, the armature 62 is limited by the transition plane formed between upper and lower part of the armature 62 MA Ü , which cooperates with a particular annular abutment in the interior of the receiving body 60 in its displacement against the Auslbücherschisraum.
  • mounted armature 62 is movably mounted between the described rest position and a tripping in the direction of release position.
  • the triggering position is achieved upon the occurrence of a certain magnetic field and thus at a certain short-circuit current level by the longitudinally mounted armature 62 and the fixed magnetic core 68 are magnetized by the generated magnetic field and attract by the magnetic effect.
  • the achievable at a certain current displacement of the armature 62 and the spring force with which the armature 62 is biased against the release movement direction interact.
  • the armature 62 acts on a percussion armature 69 guided in some regions in the magnetic core 68.
  • the receiving body 60 for attachment to the quick release 10 with its lower open end of section I through an opening 29a of the side leg 29 on the magnetic core 68 of the quick release 10th releasably attached (force-fit).
  • This will be a simple Interchangeability of the preassemblable unit consisting of receiving body 60, armature 62 and spring element 64 guaranteed.
  • This has one facilitated assembly and a simplified dimensioning of Switching devices with respect to their thresholds for short-circuit currents result.
  • the unit 60, 62, 64 is secured against rotation in the short-circuit release 10, have the receiving body 60 and the side legs 29 corresponding Anti-rotation means 70, 71 on.
  • the receiving body 60 preferably with a circumferentially arranged outwardly directed Fixation formed during the side legs 29 in his Opening 29a one cooperating with the fixation process Has recess.
  • the triggering element 92 is of a type Translation member 96 is actuated, which is on the trigger bridge 90th acting stroke movement by a ratio smaller than 1: 1 transfers. This means that the lifting movement of the armature can be greater, as the actually required lifting movement. The to the interface 91 for the auxiliary block acting stroke is reduced
  • the translation member 96 is a spring end of the spring element 64th trained operating lever 93.
  • the actuating lever 93 is located at its actuating end 94 at a Head piece 63 of the magnet armature 62 under spring action, wherein the Triggering element 92 is operatively connected to an actuating point 95 and wherein the actuating point 95 of the actuating lever 93 between the Operating end 94 and the fulcrum 97 is arranged.
  • the trip bridge has a pivotable tongue that the Release message indicates.
  • the route is the hub, the tongue performs.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)

Description

Die Erfindung betrifft ein elektrisches Schutzschaltgerät, insbesondere Motorschutzschalter, nach dem Oberbegriff des Anspruches 1.The invention relates to an electrical circuit breaker, in particular Motor protection switch, according to the preamble of claim 1.

Aus der DE 42 08 716 C2 oder aus der EP 0 333 650 A sind bereits derartige Schaltgeräte bekannt. Diese Schutzschaltgeräte weisen ebenfalls ein Isolierstoffgehäuse mit einer Schaltvorrichtung und einer Auslöseeinheit mit einem kurzschlußempfindlichen elektromagnetischen Schnellauslöser auf.From DE 42 08 716 C2 or from EP 0 333 650 A such switching devices are already known. These circuit breakers also have an insulating material with a Switching device and a trip unit with a short circuit sensitive electromagnetic quick release on.

Bekannte Schutzschaltgeräte weisen eine Auslösebrücke auf, die direkt von einem Schnellauslöserstößel betätigbar ist.
In Abhängigkeit von der Gerätegröße bzw. Strombereich ergibt sich ein anderer Magnethub für den Schnellauslöser.
Eine Benutzung von Hilfsbausteinen bzw. Zubehör, sogenannte AGM-Bausteine (Ausgelöstmelder), die eine Schnittstelle zu der Auslösebrücke aufweisen, ist aufgrund dieses unterschiedlichen Magnethubes nicht ohne weiters auch für größere Baugrößen möglich.
Known safety devices have a trip bridge that is directly actuated by a quick release plunger.
Depending on the device size or current range, this results in a different magnet stroke for the quick release.
A use of auxiliary components or accessories, so-called AGM modules (tripping detector), which have an interface to the tripping bridge, is not readily possible due to this different Magnetethubes also for larger sizes.

Der Erfindung liegt die Aufgabe zugrunde, ein gattungsgemäßes Schaltgerät zu schaffen, welches in seinem Aufbau derart verbessert ist, daß eine universelle Verwendung von Hilfsbausteinen, die eine Schnittstelle zur Auslösebrücke aufweisen, möglich ist.The invention is based on the object, a generic switching device to create, which is so improved in its construction that a Universal use of auxiliary blocks that provide an interface to the Tripping bridge, is possible.

Ausgehend von einem Schutzschaltgerät der eingangs genannten Art wird die Aufgabe erfindungsgemäß durch die kennzeichnenden Merkmale des unabhängigen Anspruches gelöst, während den abhängigen Ansprüchen vorteilhafte Weiterbildungen der Erfindung zu entnehmen sind. Based on a protective device of the type mentioned is the Object according to the invention by the characterizing features of independent claim, while the dependent claims advantageous developments of the invention can be seen.

Durch die Erfindung ist es möglich, Hilfsbausteine von kleineren Gerätereihen zu verwenden. Dies senkt die Entwicklungs-, Produktions- und Lagerkosten.By the invention it is possible to auxiliary blocks of smaller device series to use. This lowers the development, production and storage costs.

Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus den Unteransprüchen und dem folgenden, anhand von Figuren erläuterten Ausführungsbeispiel. Es zeigen

Figur 1:
ein Schutzschaltgerät gemäß der Erfindung in Perspektivansicht;
Figur 2:
die Auslöseeinheit des erfindungsgemäßen Schutzschaltgerätes in Explosionsdarstellung;
Figur 3a:
einen auswechselbaren Aufnahmekörper mit Magnetanker und Federelement in Explosionsdarstellung;
Figur 3b:
eine Schnittdarstellung des Aufnahmekörpers entlang der Linie A-A in Fig. 3a;
Figur 3c:
eine Schnittdarstellung des Aufnahmekörpers entlang der Linie B-B in Fig. 3a;
Figur 4:
eine vormontierte Auslöseeinheit mit separatem vormontierten Aufnahmekörper; und
Figur 5:
ein Schaltgerätegehäuseteil mit eingebauter Auslöseeinheit und separatem vormontierten Aufnahmekörper.
Figur 6:
eine Darstellung des Magnetankers von einer Seite;
Figur 7:
eine Darstellung des Magnetankers von einer anderen Seite;
Figur 8:
eine Schnittdarstellung des Magnetankers;
Figur 9:
eine andere Schnittdarstellung des Magnetankers;
Figur 10:
eine Schnittdarstellung des Schnellauslösers;
Figur 11:
eine vergrößerte Schnittdarstellung des Auslösebereichs Schnellauslösers.
Further details and advantages of the invention will become apparent from the dependent claims and the following, explained with reference to figures embodiment. Show it
FIG. 1:
a protective switching device according to the invention in perspective view;
FIG. 2:
the trip unit of the protection switching device according to the invention in an exploded view;
FIG. 3a:
an exchangeable receiving body with armature and spring element in exploded view;
FIG. 3b:
a sectional view of the receiving body along the line AA in Fig. 3a;
FIG. 3c:
a sectional view of the receiving body along the line BB in Fig. 3a;
FIG. 4:
a preassembled trip unit with a separate preassembled receiving body; and
FIG. 5:
a switching device housing part with built-in trip unit and separate pre-assembled receiving body.
FIG. 6:
a representation of the armature from one side;
FIG. 7:
a representation of the armature from another side;
FIG. 8:
a sectional view of the armature;
FIG. 9:
another sectional view of the armature;
FIG. 10:
a sectional view of the quick release;
FIG. 11:
an enlarged sectional view of the release area quick release.

Die Fig. 1 zeigt ein elektrisches Schutzschaltgerät 1, insbesondere Motorschutzschalter, mit einem Drehantrieb und einen Drehkopf 11 zum Ein- und Ausschalten und Anzeigen der Auslösung bei Überlast oder Kurzschluß und mit einem Gehäuse 12, das in drei Gehäuseteile 13, 14, 15 unterteilt ist. Der mittlere Gehäuseteil 14 weist Kabeleinführungsöffnungen 16 mit Kabelklemmen 17 auf.Fig. 1 shows an electrical circuit breaker 1, in particular Motor protection switch, with a rotary drive and a rotary head 11 for on and Switching off and displaying tripping in case of overload or short circuit and with a housing 12 which is divided into three housing parts 13, 14, 15. The middle one Housing part 14 has cable entry openings 16 with cable clamps 17.

Die Fig. 2 zeigt die Auslöseeinheit des erfindungsgemäßen Schutzschaltgerätes in einer Explosionsdarstellung. Dabei umfaßt die Auslöseeinheit einen Teileträger 5, an dem ein Anschlußstück 6 befestigbar ist. Der Teileträger 5 besteht mit Vorteil aus einem Thermoplastkunststoff.Fig. 2 shows the trip unit of the invention Protective switching device in an exploded view. It includes the Tripping unit a parts carrier 5, to which a connecting piece 6 can be fastened. The parts carrier 5 is advantageously made of a thermoplastic plastic.

Das Anschlußstück 6 besteht aus Kupfer und ist L-förmig, wobei der untere nach außen gerichtete Schenkel 18 als Kontaktabgriff für die Kabelklemme 17 vorgesehen ist.
Der Teileträger 5 weist einen Fixierungszapfen 23 auf, der in eine entsprechende Vertiefung am unteren Schenkel 18 des Anschlußstückes 6 ragt.
The connecting piece 6 is made of copper and is L-shaped, wherein the lower outwardly directed leg 18 is provided as a contact tapping for the cable clamp 17.
The parts carrier 5 has a fixing pin 23 which projects into a corresponding recess on the lower leg 18 of the connecting piece 6.

Der obere Schenkel 21 ist mit einer Verbindungszone 19 zum Anschluß eines Überstrom- beziehungsweise Bimetallauslösers 9 versehen. Dabei ist ein Heizleiter 22, insbesondere mittels einer Plasma- oder Schutzgasschweißverbindung, über die Verbindungszone 19 mit dem Anschlußstück 6 verbunden. Hierfür ist der Heizleiter 22 in bekannter Weise spiralförmig um ein Bimetall 8 gelegt und an seinem anderen freien Ende, vorzugsweise ebenfalls mittels einer Plasma- oder Schutzgasschweißverbindung, mit dem Bimetall 8 verbunden.
Durch die Schutzgasschweißverbindung zwischen dem Kupfer und der Bimetall 8, die sich nur sehr schwer schweißen läßt, wird eine sichere Verbindung hergestellt, wodurch Qualitätsprobleme in dieser Hinsicht beseitigt werden.
Mit der Schutzgas- bzw. Plasmaschweißung wird das Heizelement 22 an der passiven Seite des Bimetalls 8 angeschweißt. Die passive Seite des Bimetalls 8 ist zum Schweißen gut geeignet, weil nur die aktive Seite aus einer Legierung besteht, die sich relativ schwer bzw. nicht schweißen läßt.
The upper leg 21 is provided with a connection zone 19 for connection of an overcurrent or bimetallic release 9. In this case, a heating conductor 22, in particular by means of a plasma or inert gas welding connection, connected via the connection zone 19 with the connecting piece 6. For this purpose, the heating element 22 is placed in a known manner spirally around a bimetal 8 and at its other free end, preferably also by means of a plasma or inert gas welding connection, connected to the bimetal 8.
The inert gas welding connection between the copper and the bimetal 8, which is very difficult to weld, establishes a secure connection, thereby eliminating quality problems in this respect.
With the inert gas or plasma welding, the heating element 22 is welded to the passive side of the bimetal 8. The passive side of the bimetal 8 is well suited for welding because only the active side is made of an alloy that is relatively difficult or impossible to weld.

Das untere Ende des Bimetalls 8 ist mit einem Jochblech 28 an einer nach außen gebogenen Zunge 33 senkrecht verbunden.
Das Jochblech 28 besteht aus einem im wesentlichen U-förmigen Bereich mit zwei parallelen Seitenschenkeln 29, 31 und einem diese verbindenden Querschenkel 30 die den Schnellauslöser 10 halten, einem an dem zweiten Schenkel 31 rechtwinkelig einstückig verbunden Befestigungsabschnitt 32 und einer Zunge 33.
The lower end of the bimetal 8 is connected to a yoke plate 28 at an outwardly bent tongue 33 perpendicular.
The yoke plate 28 consists of a substantially U-shaped region with two parallel side limbs 29, 31 and a transverse leg 30 connecting them holding the quick release 10, one at the second leg 31 at right angles integrally connected mounting portion 32 and a tongue 33rd

An dem Befestigungsabschnitt 32 ist eine Fixierlasche angeordnet, die in eine längliche, mit Fixiernoppen versehene, Rastöffnung des Teileträgers 5 eingreift. Hierdurch wird das Jochblech 28 in dem Teileträger 5 befestigt.At the attachment portion 32, a fixing tab is arranged, which in a elongated, provided with Fixiernoppen, latching opening of the parts carrier. 5 intervenes. As a result, the yoke plate 28 is fastened in the part carrier 5.

Zu dem Befestigungsabschnitt 32 des Jochbleches 28 ist ein, im wesentlichen L-förmig ausgebildetes Kontaktelement 7 mit einem seiner Schenkelteile parallel verlaufend angeordnet.To the attachment portion 32 of the yoke plate 28 is a, substantially L-shaped contact element 7 with one of its leg parts arranged parallel to each other.

Die Auslösespule 38 des Schnellauslösers 10 ist ihrem einen Spulenende mit dem Kontaktelement 7 und mit ihrem anderen Spulenende mit dem Jochblech 28 am Befestigungsabschnitt 32 verbunden. Die Verbindung erfolgt ebenfalls vorzugsweise durch Schutzgas- oder Plasmaschweißen.The trip coil 38 of the quick release 10 is its one coil end with the contact element 7 and with its other coil end to the yoke plate 28 connected to the attachment portion 32. The connection also takes place preferably by inert gas or plasma welding.

Das parallel zum Befestigungsabschnitt 32 verlaufende Schenkelteil des Kontaktelementes 7 ist bereichsweise mit Aussparungen versehen um mit Teilen des Jochbleches 28 ineinanderzugreifen. Hierdurch wird äußerst platzsparend gebaut.The parallel to the attachment portion 32 extending leg portion of the Contact element 7 is partially provided with recesses to Parts of the yoke plate 28 interlock. This will be extremely built to save space.

Im unteren Bereich des Teileträgers 5 wird ein Slotmotor 47 vormontiert.In the lower part of the parts carrier 5, a slot motor 47 is pre-assembled.

In einer besonders bevorzugten Ausführungsform ist die Auslöseeinheit ausschließlich durch Verklebung im Gehäuse 12 fixiert (d.h. ohne Verschraubung, Verrastung, Verspannung oder dergleichen). Als besonders geeignete Klebestellen haben sich Fortsätze an den spannungführenden Teilen erwiesen. In der dargestellten Ausführungsform sind mindestens ein erster Klebefortsatz K1 an der Verbindungszone 19 des Anschlußstückes 6, ein zweiter Klebefortsatz K2 an der mit dem Jochblech 28 verbundenen Zunge 33 und ein dritter und vierter Klebefortsatz K3, K4 am Jochblech 28 selbst, im Eckbereich von Seitenschenkel 29 und Querschenkel 30, angeordnet.In a particularly preferred embodiment, the trip unit fixed only by gluing in the housing 12 (i.e. Screwing, locking, bracing or the like). As special Suitable splices have extensions on the voltage-carrying Share proved. In the illustrated embodiment, at least one first Klebefortsatz K1 at the connection zone 19 of the connecting piece 6, a second adhesive extension K2 on the tongue connected to the yoke plate 28 33 and a third and fourth adhesive extension K3, K4 on the yoke plate 28 itself, in Corner of side legs 29 and transverse leg 30, arranged.

Der Stromfluß in den, an dem Teileträger 5 angeordneten Teilen erfolgt von dem unteren Schenkel des Anschlußstückes 6 bis zu der Schweißverbindung Verbindungszone 19 / Heizelement 22, anschließend in das Heizelement 22 bis zu der Schweißverbindung Heizelement 22 / Bimetall 8, anschließend über das Bimetall 8 bis zu der Schweißverbindung Bimetall 8 / Jochblech 28, anschließend über den Befestigungsabschnitt 32 des Jochblechs 28 bis zu der Schweißverbindung Befestigungsabschnitt 32 / Auslösespule 38, anschließend über die Wicklung der Auslösespule 38 bis zu der Schweißverbindung Auslösespule 38 / Kontaktelement 7 in das Kontaktelement 7 zur Weiterführung des Stromes über das mit dem Kontaktelement 7 zusammenwirkende bewegliche Kontaktelement.The flow of current in the arranged on the parts carrier 5 parts is made by the lower leg of the connector 6 to the weld Connecting zone 19 / heating element 22, then in the heating element 22nd up to the welded joint heating element 22 / bimetal 8, then via the bimetal 8 up to the welded joint bimetal 8 / yoke plate 28, then over the attachment portion 32 of the yoke plate 28 to the Weld connection attachment section 32 / trip coil 38, then about the winding of the trip coil 38 up to the weld joint Trip coil 38 / contact element 7 in the contact element 7 to Continuation of the current via the with the contact element. 7 cooperating movable contact element.

Fig.3a zeigt eine vormontierbare Einheit mit einem Aufnahmekörper 60, einem Magnetanker 62 und einem Federelement 64 in einer Explosionsdarstellung.3a shows a preassemblable unit with a receiving body 60, a Magnetic armature 62 and a spring element 64 in an exploded view.

Der Magnetanker 62 weist ein erstes Teil MA1, ein zweites Teil MA2, und ein drittes Teil MA3 auf, wobei das zweite Teil MA2 zwischen dem ersten Teil MA1 und dem dritten Teil MA3 angeordnet ist. The magnet armature 62 has a first part MA 1 , a second part MA 2 , and a third part MA 3 , wherein the second part MA 2 is arranged between the first part MA 1 and the third part MA 3 .

Der Magnetanker 62 ist im wesentlichen stabförmig ausgebildet, wobei sein unterer Teil MA1 einen nahezu quadratischen Querschnitt aufweist und sein oberer Teil MA2 als stiftförmiger Fortsatz deutlich geringeren und insbesondere kreisrunden Querschnitts ausgebildet ist. Dabei ist der obere Teil MA2 mit Vorteil nicht zentrisch, sondern aus der Achsmitte des Ankers 62 versetzt angeordnet. An seinem freien Ende ist der obere Teil MA2 durch ein vorzugsweise plattenartiges Kopfstück 63 erweitert. Der Magnetanker 62 besteht aus einem magnetisierbaren Material.
Der Magnetankerkörper (mit Ausnahme des Kopfstückes 63) kann z.B. auf einfache Weise aus einem Vierkantprofil gedreht werden. Dabei kann durch Zentrierung des Materials in der Mittelachse des Vierkantprofils, der untere Teil MA1 und bei Zentrierung des Materials aus der Profilmitte versetzt, der obere Teil MA2 gefertigt (z.B. durch Drehen auf einer Drehbank) werden.
The armature 62 is formed substantially rod-shaped, with its lower part MA 1 has a nearly square cross-section and its upper part MA 2 is formed as a pin-shaped extension significantly lower and in particular circular cross-section. In this case, the upper part MA 2 is advantageously not centric, but arranged offset from the center of the armature 62. At its free end, the upper part MA 2 is expanded by a preferably plate-like head piece 63. The magnet armature 62 is made of a magnetizable material.
The magnet armature body (with the exception of the head piece 63) can for example be easily rotated from a square profile. It can be made by centering the material in the central axis of the square profile, the lower part MA 1 and centering of the material from the center of the profile, the upper part MA 2 manufactured (eg by turning on a lathe).

Der Aufnahmekörper 60 besteht aus Isolierstoff und dient der Aufnahme des Magnetankers 62 und des Federelementes 64. Dabei ist der Magnetanker 62 längsbeweglich in dem, im wesentlichen röhrenförmig ausgebildeten, Aufnahmekörper 60 gelagert. Durch das Federelement 64, welches vorzugsweise als Drehfeder ausgebildet ist und ebenfalls in, beziehungsweise an, dem Aufnahmekörper 60 angeordnet ist, ist der Magnetanker 62 entgegen seiner Auslösebewegungsrichtung (hier: nach unten) mit einer Federkraft beaufschlagt. Hierfür stützt sich die Drehfeder mit ihrem einen freien Ende an einem Widerlager 66 des Aufnahmekörpers 60 ab. Mit ihrem anderen freien Ende hintergreift die Drehfeder das Kopfstück 63 des Magnetankers 62 und beaufschlagt diesen hierdurch mit einer Federkraft entgegen seiner Auslösebewegungsrichtung.The receiving body 60 is made of insulating material and serves to accommodate the Magnetic armature 62 and the spring element 64. In this case, the armature 62nd longitudinally movable in the, substantially tubular, Receiving body 60 stored. By the spring element 64, which is preferably designed as a torsion spring and also in, respectively on, the receiving body 60 is arranged, the armature 62 is opposite its triggering movement direction (here: down) with a spring force applied. For this purpose, the torsion spring supports with its one free end an abutment 66 of the receiving body 60. With her other free End behind the torsion spring engages behind the head 63 of the armature 62 and acts on this by a spring force against his Triggering movement direction.

Das an dem Kopfstück 63 greifende Ende des Federelementes 64 greift auf einen freien Bereich 80 des zweiten Teils MA2 in der Nähe der Achsmitte des Magnetankers 62. Auf den freien Bereich 80 des zweiten Teils MA2, in der Nähe der Achsmitte des Magnetankers 62 ist auch ein Auslöseelement 81 einer Auslösebrücke angeordnet. Das Auslöseelement 81 ist hakenförmig. The end of the spring element 64 engaging on the head piece 63 engages on a free area 80 of the second part MA 2 near the center of the axis of the magnet armature 62. On the free area 80 of the second part MA 2 , in the vicinity of the axial center of the magnet armature 62 also a triggering element 81 of a trip bridge arranged. The triggering element 81 is hook-shaped.

Der Aufnahmekörper 60 besteht im wesentlichen aus einem unteren, rohrförmigen Abschnitt I und einem Kopfabschnitt II.The receiving body 60 consists essentially of a lower, tubular section I and a head section II.

Der Abschnitt I dient in seinem oberen Teil I1 der Führung des Magnetankers 62 und in seinem unteren Teil I2 der Befestigung innerhalb des Schnellauslösers 10. In seinem oberen Teil I1 weist der Aufnahmekörper 60 in Anpassung an den unteren Teil MA2 des Magnetankers 62 den Kreisquerschnitt verengende Wandungsbereiche auf (gemäß Fig. 3b). In seinem unteren randoffenen Teil I2 ist der Aufnahmekörper 60 in seinem Inneren in Anpassung an den Querschnitt des Magnetankers 62, insbesondere kreisrund, ausgebildet (Fig.3c).The section I is used in its upper part I 1 of the guide of the armature 62 and in its lower part I 2 of the attachment within the quick release 10. In its upper part I 1 , the receiving body 60 in adaptation to the lower part MA 2 of the armature 62th the wall area narrowing the circular cross-section (according to FIG. 3b). In its lower edge open part I 2 , the receiving body 60 in its interior in adaptation to the cross section of the magnet armature 62, in particular circular, formed (Figure 3c).

Für die Montage des Magnetankers 62 in dem Aufnahmekörper 60 wird der Magnetanker 62 mit seinem Kopfstück 63 voran, von unten in den unteren Teil I2 des Aufnahmekörpers 60 eingeführt. In einer vormontierten Ruheposition wird der Magnetanker 62 innerhalb des Aufnahmekörpers 60 durch ein freies, unter das Kopfstück 63 des Magnetankers 62 greifendes, Ende der Drehfeder entgegen der Auslösebewegungsrichtung vorgespannt. Hierbei wird der Magnetanker 62 durch die zwischen oberem und unteren Teil des Magnetankers 62 gebildete Übergangsebene MAÜ, die mit einem insbesondere kreisringförmigen Widerlager im Inneren des Aufnahmekörpers 60 zusammenwirkt in seinem Verschiebeweg entgegen der Auslösebewegungsrichtung begrenzt. Auf diese Weise ist der in der vormontierten Einheit (60, 62, 64) gelagerte Magnetanker 62 zwischen der beschrieben Ruheposition und einer in Auslösebewegungsrichtung befindlichen Auslöseposition beweglich gelagert. Die Auslöseposition wird bei Auftreten einer bestimmten Magnetfeldstäke und damit bei einer bestimmten Kurzschlußstromhöhe erreicht, indem der längsbeweglich gelagerte Magnetanker 62 und der feststehende Magnetkern 68 durch das erzeugte Magnetfeld magnetisiert werden und sich durch die magnetische Wirkung anziehen. Der bei einer bestimmten Stromstärke erreichbare Verschiebeweg des Magnetankers 62 und die Federkraft, mit der der Magnetanker 62 entgegen der Auslösebewegungsrichtung vorgespannt ist, stehen in Wechselwirkung. So ist durch die Dimensionierung der Drehfeder der Grenzstrom einstellbar, bei dem der Schnellauslöser 10 auslösen soll. Für den Auslösevorgang wirkt (schlägt) der Magnetanker 62 auf einen, bereichsweise im Magnetkem 68 geführten, Schlaganker 69.For the mounting of the armature 62 in the receiving body 60 of the armature 62 is preceded by its head 63, introduced from below into the lower part I 2 of the receiving body 60. In a preassembled rest position of the armature 62 is biased within the receiving body 60 by a free, under the head piece 63 of the armature 62 cross, end of the torsion spring against the Auslösebewegungsrichtung. In this case, the armature 62 is limited by the transition plane formed between upper and lower part of the armature 62 MA Ü , which cooperates with a particular annular abutment in the interior of the receiving body 60 in its displacement against the Auslösebewegungsrichtung. In this way, in the preassembled unit (60, 62, 64) mounted armature 62 is movably mounted between the described rest position and a tripping in the direction of release position. The triggering position is achieved upon the occurrence of a certain magnetic field and thus at a certain short-circuit current level by the longitudinally mounted armature 62 and the fixed magnetic core 68 are magnetized by the generated magnetic field and attract by the magnetic effect. The achievable at a certain current displacement of the armature 62 and the spring force with which the armature 62 is biased against the release movement direction, interact. Thus, by the dimensioning of the torsion spring of the limiting current adjustable at which the quick release 10 should trigger. For the tripping operation, the armature 62 acts on a percussion armature 69 guided in some regions in the magnetic core 68.

Gemäß Fig.4 wird der Aufnahmekörper 60 zur Befestigung am Schnellauslöser 10 mit seinem unteren offenen Ende des Abschnittes I durch eine Öffnung 29a des Seitenschenkels 29 auf den Magnetkern 68 des Schnellauslösers 10 lösbar aufgesteckt (kraftschlüssig). Hierdurch wird eine einfache Austauschbarkeit der vormontierbaren Einheit bestehend aus Aufnahmekörper 60, Magnetanker 62 und Federelement 64 gewährleistet. Dies hat eine erleichterte Montage sowie eine vereinfachte Dimensionierung der Schaltgeräte bezüglich ihrer Ansprechwerte für Kurzschlußströme zur Folge. Damit die Einheit 60, 62, 64 verdrehsicher im Kurzschlußauslöser 10 fixiert ist, weisen der Aufnahmekörper 60 und der Seitenschenkel 29 entsprechende Verdrehsicherungsmittel 70, 71 auf. Hierfür ist der Aufnahmekörper 60 vorzugsweise mit einem umfänglich angeordneten nach außen gerichteten Fixierungsfortsatz ausgebildet, währen der Seitenschenkel 29 in seiner Öffnung 29a eine mit dem Fixierungsfortsatz zusammenwirkende Ausnehmung aufweist.According to Figure 4, the receiving body 60 for attachment to the quick release 10 with its lower open end of section I through an opening 29a of the side leg 29 on the magnetic core 68 of the quick release 10th releasably attached (force-fit). This will be a simple Interchangeability of the preassemblable unit consisting of receiving body 60, armature 62 and spring element 64 guaranteed. This has one facilitated assembly and a simplified dimensioning of Switching devices with respect to their thresholds for short-circuit currents result. So that the unit 60, 62, 64 is secured against rotation in the short-circuit release 10, have the receiving body 60 and the side legs 29 corresponding Anti-rotation means 70, 71 on. For this purpose, the receiving body 60 preferably with a circumferentially arranged outwardly directed Fixation formed during the side legs 29 in his Opening 29a one cooperating with the fixation process Has recess.

Wie in Fig. 11 zu sehen ist, ist das Auslöseelement 92 von einem Übersetzungsglied 96 betätigbar ist, welches die auf die Auslösebrücke 90 wirkende Hubbewegung durch ein Übersetzungsverhältnis kleiner 1:1 überträgt. D.h., daß die Hubbewegung des Magnetankers kann größer sein, als die eigentlich erforderliche Hubbewegung. Die an die Schnittstelle 91 für den Hilfsbaustein wirkende Hubbewegung wird reduziertAs can be seen in FIG. 11, the triggering element 92 is of a type Translation member 96 is actuated, which is on the trigger bridge 90th acting stroke movement by a ratio smaller than 1: 1 transfers. This means that the lifting movement of the armature can be greater, as the actually required lifting movement. The to the interface 91 for the auxiliary block acting stroke is reduced

Das Übersetzungsglied 96 ist ein als Federende des Federelementes 64 ausgebildeter Betätigungshebel 93.The translation member 96 is a spring end of the spring element 64th trained operating lever 93.

Der Betätigungshebel 93 liegt an seinem Betätigungsende 94 an einem Kopfstück 63 des Magnetankers 62 unter Federwirkung an, wobei das Auslöseelement 92 mit einem Betätigungspunkt 95 in Wirkverbindung steht und wobei der Betätigungspunkt 95 des Betätigungshebels 93 zwischen dem Betätigungsende 94 und dem Hebeldrehpunkt 97 angeordnet ist.The actuating lever 93 is located at its actuating end 94 at a Head piece 63 of the magnet armature 62 under spring action, wherein the Triggering element 92 is operatively connected to an actuating point 95 and wherein the actuating point 95 of the actuating lever 93 between the Operating end 94 and the fulcrum 97 is arranged.

Durch die Erfindung ist es möglich die Winkelstellung derart zu reduzieren, daß die wirksame Wegstrecke der Schnittstelle von 6mm auf 4,2 mm reduziert wird. Die Auslösebrücke weist eine schwenkbare Zunge auf, die die Ausgelöstmeldung angibt. Die Wegstrecke ist der Hub, den die Zunge ausführt. By the invention it is possible to reduce the angular position such that reduces the effective distance of the interface from 6mm to 4.2mm becomes. The trip bridge has a pivotable tongue that the Release message indicates. The route is the hub, the tongue performs.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

Schaltgerätswitchgear
11
Teileträgerparts carrier
55
Anschlußstückconnector
66
Kontaktelementcontact element
77
Bimetallbimetallic
88th
ÜberstromauslöserOvercurrent release
99
Schnellauslöserinstantaneous release
1010
Drehkopfturret
1111
Gehäusecasing
1212
Gehäuseteilehousing parts
13, 14, 1513, 14, 15
KabeleinführungsöffnungenCable entry holes
1616
Kabelklemmecable clamp
1717
unterer Schenkellower thigh
1818
Verbindungszoneconnecting zone
1919
oberer Schenkelupper leg
2121
Heizelementheating element
2222
Fixierungszapfenfixation pin
2323
Jochblechyoke plate
2828
Seitenschenkelside leg
29, 3129, 31
Querschenkeltransverse leg
3030
Befestigungs-AbschnittFastening portion
3232
Zungetongue
3333
Auslösespuletrip coil
3838
Aufnahmekörperreceiving body
6060
Magnetankerarmature
6262
Kopfstückheadpiece
63 63
Federelementspring element
6464
Widerlagerabutment
6666
Magnetkernmagnetic core
6868
Schlagankerimpact armature
6969
Verdrehsicherungsmittelanti-rotation
70, 7170, 71
freien Bereichfree area
8080
Auslöseelementtriggering element
8181
Auslösebrücketripping bridge
9090
Schnittstelleinterface
9191
Auslöseelementtriggering element
9292
Betätigungshebelactuating lever
9393
Betätigungsendeactuating end
9494
Betätigungpunktactuation point
9595
Übersetzungsgliedtransmission member
9696
HebeldrehpunktFulcrum
9797

Claims (9)

  1. Electrical circuit breaker (1), in particular a motor circuit breaker, having a dielectric enclosure (12), a switching contact arrangement, a tripping unit with an electromagnetic quick-action release (10) comprising a tripping coil (38), a magnet core (68), a magnet armature (62) (with the magnet armature (62) being mounted in a holding body (60) such that it can move longitudinally), and is acted on in the opposite direction to its tripping movement by a spring element (64), an impact armature (69), a tripping link (90), which acts on a latching mechanism, can be operated by the magnet armature (62) and has a tripping element (92), and an interface (91), which is connected to the tripping link (90), for an auxiliary module, in which case the tripping element (92) can be operated by an operating lever (93) characterized in that the operating lever (93) is in the form of a spring end of the spring element (64), and in that the operating lever (93) transmits the linear movement acting on the tripping link (90) with a step-ratio of less than 1:1.
  2. Circuit breaker according to Claim 2, characterized in that the spring element (64) is a rotary spring.
  3. Circuit breaker according to one of the preceding claims, characterized in that the operating end (94) of the operating lever (93) rests on a head piece (63) of the magnet armature (62) with a spring effect, and in that the tripping element (92) is operatively connected to an operating point (95), with the operating point (95) of the operating lever (93) being arranged between the operating end (94) and the lever fulcrum (97).
  4. Circuit breaker according to one of the preceding claims, characterized in that the magnet armature (62) has a first part (MA1), a second part (MA2) and a third part (MA3), in that the second part (MA2) is arranged between the first part (MA1) and the third part (MA3), in that the second part (MA2) is a projection, in the form of a pin, with a considerably smaller cross section than the first part (MA1), in that the second part (MA2) is not arranged centrally, but offset from the axis centre of the magnet armature (62), in that the third part (MA3) is in the form of a headpiece (63) on which the spring element (64) is supported, in that at least part of the spring element (64) is arranged in the area of the second part (MA2), and in that the third part (MA3) is a headpiece (63) in the form of a plate.
  5. Circuit breaker according to the preceding claim, characterized in that the first part (MA1), the second part (MA2) and the third part (MA3) are integrally connected to form a single magnet armature body, in that the second part (MA2) of the magnet armature body is turned from a quadrilateral profile in such a way that, during the centring process, the centre axis of the quadrilateral profile is arranged offset from the profile centre.
  6. Circuit breaker according to one of Claims 4 or 5, characterized in that the spring element (64) is arranged in or on the holding body (60), with a spring force acting on the magnet armature (62) in the opposite direction to its tripping movement direction, with the free end of the spring element (64) being supported on an opposing bearing (66) on the holding body (60), and in that the other free end of the spring element (64) grips a headpiece (63) of the magnet armature (62) so that a spring force in the opposite direction to its tripping movement direction is applied to the magnet armature (62).
  7. Circuit breaker according to one of Claims 5 or 6, characterized in that that end of the spring element (64) which acts on the headpiece (63) acts on a free area (80) of the second part (MA2) in the vicinity of the axis centre of the magnet armature (62), and in that a tripping element (81) of a tripping link (90) is arranged on a free area (80) of the second part (MA2), in the vicinity of the axis centre of the magnet armature (62).
  8. Circuit breaker according to one of the preceding claims, characterized in that the tripping element (81) is in the form of a hook.
  9. Circuit breaker according to one of the preceding claims, characterized in that the lower part (MA1) of the magnet armature (62) and that part (I1) of the holding body (60) which guides the lower part (MA1) are designed to match one another such that the magnet armature (62) is guided in the holding body (60) such that it cannot rotate.
EP00117609A 1999-10-29 2000-08-16 Protective electrical circuit-breaker Expired - Lifetime EP1096529B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19952186A DE19952186A1 (en) 1999-10-29 1999-10-29 Electrical protection switching device
DE19952186 1999-10-29

Publications (2)

Publication Number Publication Date
EP1096529A1 EP1096529A1 (en) 2001-05-02
EP1096529B1 true EP1096529B1 (en) 2005-04-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP00117609A Expired - Lifetime EP1096529B1 (en) 1999-10-29 2000-08-16 Protective electrical circuit-breaker

Country Status (2)

Country Link
EP (1) EP1096529B1 (en)
DE (2) DE19952186A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT509250A1 (en) 2008-03-05 2011-07-15 Moeller Gebaeudeautomation Gmbh SWITCHGEAR
KR101015333B1 (en) * 2008-12-31 2011-02-16 엘에스산전 주식회사 Molded case circuit breaker

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1096469B (en) * 1959-01-24 1961-01-05 Elektroinstallation Annaberg V Electromagnetic quick release device for overcurrent switches, especially small circuit breakers
AT237724B (en) * 1962-05-15 1965-01-11 Biegelmeier Gottfried AC line circuit breaker with impact tie rod
DE2243139A1 (en) * 1972-09-01 1974-03-07 Licentia Gmbh COUPLING FOR MULTIPOLE SELF-SWITCH
FR2585877B1 (en) * 1985-07-31 1987-10-23 Merlin Gerin MAGNETOTHERMAL TRIGGER ASSOCIATED WITH THE MECHANISM OF A MINIATURE CIRCUIT BREAKER WITH INSULATING HOUSING
DE58904454D1 (en) * 1988-03-15 1993-07-01 Abb Patent Gmbh POWER TRANSMISSION IN THE ELECTROMAGNETIC RELEASE SYSTEM OF AN INSTALLATION SWITCH.
FR2674370B1 (en) * 1991-03-21 1993-10-29 Telemecanique PROTECTIVE SWITCHING APPARATUS ACCOUPABLE TO A CONTROL MODULE AND / OR A SIGNALING MODULE.
DE4312950A1 (en) * 1993-04-21 1994-10-27 Abb Patent Gmbh Magnetic trigger for an electrical switching device
US5836441A (en) * 1996-04-08 1998-11-17 Square D Company Circuit breaker accessory module actuators

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EP1096529A1 (en) 2001-05-02
DE19952186A1 (en) 2001-05-03
DE50010151D1 (en) 2005-06-02

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