EP0358287A2 - Driving element for a multipole low tension electrical power circuit breaker - Google Patents

Driving element for a multipole low tension electrical power circuit breaker Download PDF

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Publication number
EP0358287A2
EP0358287A2 EP89250027A EP89250027A EP0358287A2 EP 0358287 A2 EP0358287 A2 EP 0358287A2 EP 89250027 A EP89250027 A EP 89250027A EP 89250027 A EP89250027 A EP 89250027A EP 0358287 A2 EP0358287 A2 EP 0358287A2
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EP
European Patent Office
Prior art keywords
metal body
drive component
component according
insulating material
profile
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.)
Granted
Application number
EP89250027A
Other languages
German (de)
French (fr)
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EP0358287B1 (en
EP0358287A3 (en
Inventor
Clifford A. Buxton
David A. Leone
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Siemens AG
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Siemens AG
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Publication date
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Publication of EP0358287A2 publication Critical patent/EP0358287A2/en
Publication of EP0358287A3 publication Critical patent/EP0358287A3/en
Application granted granted Critical
Publication of EP0358287B1 publication Critical patent/EP0358287B1/en
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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
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0072—Details of switching devices, not covered by groups H01H1/00 - H01H7/00 particular to three-phase switches
    • 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
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H1/226—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member having a plurality of parallel contact bars
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H2009/0088—Details of rotatable shafts common to more than one pole or switch unit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H2009/0094—Details of rotatable shafts which are subdivided; details of the coupling means thereof

Definitions

  • the invention relates to a drive component with arm parts for articulated connection with a drive device for the simultaneous actuation of movable contact levers of a multi-pole low-voltage circuit breaker, with an inner metal body which is essentially dimensioned according to the length of the drive component and an outer jacket body made of insulating material which is fixedly connected thereto as a carrier of Holders for contact levers and insulating shields arranged between the poles to protect against flashovers between neighboring poles.
  • a drive component of this type is known for example from DE-B-27 57 696.
  • the drive component serves as a control shaft, i.e. H. the drive component also performs the function of the swivel axis during the on and off movements of the movable contact levers.
  • drive components of the type considered here can also be used as a pure insulating and supporting element for contact arrangements as a switching crossmember, the pivot axis not coinciding with the longitudinal axis of the drive component. Examples of such switch beams are shown in US-A-4 137 437, 4 524 339 and 4 580 021.
  • the invention has for its object to design the drive component so that it has a high mechanical strength with the lowest possible weight and that the occurrence of leakage currents or arcing is counteracted more effectively than before.
  • the metal body is formed over its entire length with a thin-walled angled cross-sectional shape, that the arm parts are fastened to the metal body and that the insulating screens are part of the jacket body made of insulating material.
  • the metal body has a design to improve the adhesive connection between the metal body and the jacket body.
  • the desired high mechanical strength of the drive component can advantageously be achieved in that the metal body has a profile part with a U-shaped cross section.
  • a further increase in strength can be achieved in that two U-profile parts connected to one another with their central parts are used to form a metal body with an I-profile.
  • the middle parts of the connected U-shaped profile parts can have corresponding openings for the passage of the insulating material of the jacket body.
  • webs can be provided which extend from at least one edge of each of the corresponding openings.
  • a rectangular hollow profile in particular a hollow profile with a square shape, is also suitable for forming the metal body.
  • a switching crossbeam 10 is shown as a drive component in a three-pole low-voltage circuit breaker compact design with molded housing.
  • the switching crossbar 10 comprises a jacket body 12 made of an insulating plastic and an inner metal body 14.
  • the jacket part 12 has insulating material shields 16, two of which are arranged on both sides on both sides of a drive arm 18 which is provided as an arm part and is used for the articulated connection to a drive device of the circuit breaker. At the ends of the switching crossmember 10 and in the space between the two pairs of insulating shields 16, the jacket body 12 forms holders 20 for attaching contact levers. In the area of the drive arms 18 and between the associated insulating shields 16, the jacket body 12 forms sections with a smaller cross section.
  • the holders 20 each have holes 24 for the attachment of contact levers, holes 26 for tension springs and openings 28 and 30 for compression springs.
  • the holes 24 are used to fasten a carrier of the contact levers to the switching cross member 10.
  • the holes 28 are used to receive contact force springs for the main contacts in accordance with the number of contact levers belonging to each pole.
  • the respective one opening 30 in each of the holders 20 serves to receive a compression spring, which is provided as a contact force spring for the erosion or pre-contacts.
  • the compression springs effect an essentially uniform distribution of the force on the contact pieces on the contact levers.
  • the contact carrier is attached to the switching crossbar in such a way that the switching crossbar 10 can be moved to a limited extent relative to the contact carrier. to allow compression of the compression springs when closing.
  • the tension springs to be fitted in the holes 24 serve to provide the opening force on the switching crossmember 10 in such a way that the contact arrangements are opened.
  • FIGS. 4, 5 and 6 show details of the metal body 14 contained in the switching crossbar 10 according to FIGS. 1, 2 and 3. It can be seen in particular from FIGS. 1 and 2 that the metal body 14 is dimensioned somewhat shorter than the switching crossmember 10, as a result of which the end faces of the metal body are also covered by the insulating plastic of the jacket part 12.
  • the metal body 14 has the drive arms 18, which consist of two angle pieces 36 arranged opposite one another. In each of the elbows 36 there is an opening for a pin, which is used to connect the switch crossbar to the drive device of the circuit breaker.
  • the metal body 14 In cross section, the metal body 14 is essentially I-shaped. In order to provide this cross-sectional shape, two U-shaped or C-shaped profile parts 32 are connected to one another with their central parts. The elbows 36 rest on the adjacent legs of the two profile parts 32 and close with them approximately flush.
  • the metal body 14 is provided with openings 33 which are correspondingly provided in the middle parts of both profile parts 32.
  • a web 34 is arranged, for. B. by bending out of the opening 33 to achieve a firm anchoring of the insulating plastic on the metal body 14.
  • An arrangement of openings 33 and webs 34 is located in the area of each of the three holders 20.
  • FIG. 7 also shows that a rectangular or square profile part 38 is also suitable, which corresponds approximately to the overall cross section of the two profile parts 32 in FIG. 6.

Landscapes

  • Breakers (AREA)
  • Mechanisms For Operating Contacts (AREA)

Abstract

Eine Schalttraverse (10) zur gleichzeitigen Betätigung der Kontakthebel eines mehrpoligen Niederspannungs-Leistungsschalters weist einen inneren Metallkörper (14) und einen fest mit diesem verbundenen Mantelkörper (12) aus isolierendem Kunststoff auf. Der Mantelkörper bildet Halter für die Kontakthebelanordnungen der einzelnen Pole des Leistungsschalters. Antriebsarme (18) zur Verbindung mit einer Antriebsvorrichtung sind unmittelbar an dem Metallkörper (14) angebracht. Öffnungen (33) und Stege (34) gewährleisten den festen Zusammenhalt zwischen dem Metallkörper (14) und dem Mantelkörper (12). Der Metallkörper (14) ist ein Bauteil aus dünnwandigem Winkelprofil, vorzugsweise aus zwei mit ihren Mittelteilen aneinanderliegend verbundenen U-Profilteilen.A switching crossbeam (10) for the simultaneous actuation of the contact levers of a multipole low-voltage circuit breaker has an inner metal body (14) and a jacket body (12) made of insulating plastic which is firmly connected to it. The jacket body forms holders for the contact lever arrangements of the individual poles of the circuit breaker. Drive arms (18) for connection to a drive device are attached directly to the metal body (14). Openings (33) and webs (34) ensure firm cohesion between the metal body (14) and the jacket body (12). The metal body (14) is a component made from a thin-walled angle profile, preferably from two U-profile parts connected to one another with their central parts.

Description

Die Erfindung betrifft ein Antriebsbauteil mit Armteilen zur gelenkigen Verbindung mit einer Antriebsvorrichtung zur gleich­zeitigen Betätigung von bewegbaren Kontakthebeln eines mehr­poligen Niederspannungs-Leistungsschalters, mit einem im wesentlichen der Länge des Antriebsbauteiles entsprechend be­messenen inneren Metallkörper und einem fest mit diesem ver­bundenen äußeren Mantelkörper aus Isolierstoff als Träger von Haltern für Kontakthebel sowie zwischen den Polen angeordneten Isolierstoffschirmen zum Schutz gegen Überschläge zwischen be­nachbarten Polen.The invention relates to a drive component with arm parts for articulated connection with a drive device for the simultaneous actuation of movable contact levers of a multi-pole low-voltage circuit breaker, with an inner metal body which is essentially dimensioned according to the length of the drive component and an outer jacket body made of insulating material which is fixedly connected thereto as a carrier of Holders for contact levers and insulating shields arranged between the poles to protect against flashovers between neighboring poles.

Ein Antriebsbauteil dieser Art ist beispielsweise durch die DE-B-27 57 696 bekannt geworden. Hierbei dient das Antriebs­bauteil als Schaltwelle, d. h. das Antriebsbauteil nimmt zu­gleich die Funktion der Schwenkachse bei den Ein- und Ausschalt­bewegungen der bewegbaren Kontakthebel wahr. Ferner können An­triebsbauteile der hier betrachteten Art auch als reines Iso­lier- und Tragorgan für Kontaktanordnungen als Schalttraverse eingesetzt werden, wobei die Schwenkachse nicht mit der Längs­achse des Antriebsbauteiles zusammenfällt. Beispiele solcher Schalttraversen sind den US-A-4 137 437, 4 524 339 und 4 580 021 zu entnehmen.A drive component of this type is known for example from DE-B-27 57 696. Here, the drive component serves as a control shaft, i.e. H. the drive component also performs the function of the swivel axis during the on and off movements of the movable contact levers. Furthermore, drive components of the type considered here can also be used as a pure insulating and supporting element for contact arrangements as a switching crossmember, the pivot axis not coinciding with the longitudinal axis of the drive component. Examples of such switch beams are shown in US-A-4 137 437, 4 524 339 and 4 580 021.

Da im Betrieb von Niederspannungs-Leistungsschaltern eine äußerst rasche Kontakttrennung und eine zuverlässige Aufrecht­erhaltung der Isolation zwischen den benachbarten Polen ge­fordert wird, ergeben sich hohe Anforderungen an die Antriebs­bauteile in elektrischer und mechanischer Hinsicht. Insbe­sondere soll eine gleichzeitige Betätigung der Kontakthebel sämtlicher Pole sichergestellt sein, obwohl die Einleitung der Antriebskraft in das Antriebsbauteil nur örtlich erfolgt. Ferner sind die Antriebsbauteile insbesondere beim Abschalten hoher Fehlerströme dem Einfluß von Schaltgasen ausgesetzt, die sich nicht nur in der Richtung der Lichtbogenlöschkammer, sondern aufgrund des hohen Druckes der Gase auch teilweise in Richtung der Antriebsteile im Inneren des Leistungsschalters ausbreiten. Von den Schaltgasen herrührende Niederschläge können zum Fließen von Kriechströmen entlang der Oberfläche des Antriebsbauteiles führen. Hieraus können sich Überschläge mit einem nachfolgenden Störlichtbogen und entsprechenden Zer­störungen entwickeln.Since extremely fast contact separation and reliable maintenance of the insulation between the neighboring poles are required when operating low-voltage circuit breakers, high demands are made on the drive components in electrical and mechanical terms. In particular, a simultaneous actuation of the contact lever of all poles should be ensured, although the initiation of Driving force into the drive component is only local. Furthermore, the drive components are exposed to the influence of switching gases, particularly when switching off high fault currents, which spread not only in the direction of the arc quenching chamber, but also partly in the direction of the drive parts inside the circuit breaker due to the high pressure of the gases. Precipitation from the switching gases can cause leakage currents to flow along the surface of the drive component. This can lead to arcing with a subsequent arcing and corresponding destruction.

Der Erfindung liegt die Aufgabe zugrunde, das Antriebsbauteil so auszubilden, daß es bei möglichst geringem Gewicht eine hohe mechanische Festigkeit aufweist und daß der Entstehung von Kriechströmen oder Überschlägen wirksamer als bisher entgegen­gewirkt wird.The invention has for its object to design the drive component so that it has a high mechanical strength with the lowest possible weight and that the occurrence of leakage currents or arcing is counteracted more effectively than before.

Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß der Metallkörper auf seiner ganzen Länge mit einer dünnwandigen abgewinkelten Querschnittsform ausgebildet ist, daß die Arm­teile an dem Metallkörper befestigt sind und daß die Isolier­stoffschirme Bestandteil des Mantelkörpers aus Isolier­stoff sind. Durch die Anwendung eines Winkelprofils wird bei geringem Gewicht ein hohes Widerstandsmoment gegen Verdrehung und Biegung erreicht. Durch die einstückige Herstellung von Mantelkörper und Isolierstoffschirmen werden Kriechwege ent­lang der Oberfläche des Mantelkörpers ausgeschlossen.This object is achieved according to the invention in that the metal body is formed over its entire length with a thin-walled angled cross-sectional shape, that the arm parts are fastened to the metal body and that the insulating screens are part of the jacket body made of insulating material. By using an angle profile, a high moment of resistance against twisting and bending is achieved with low weight. The one-piece production of the jacket body and insulating material shields prevents creepage paths along the surface of the jacket body.

Zur Steigerung der mechanischen Festigkeit des Antriebsbauteiles kann noch dazu beigetragen werden, daß der Metallkörper eine Ausbildung zur Verbesserung der haftenden Verbindung zwischen dem Metallkörper und dem Mantelkörper aufweist. Als vorteilhaft hat sich in diesem Zusammenhang insbesondere die Anbringung von Öffnungen an dem Metallkörper für den Durchgriff des Isolierstoffes des Mantelkörpers erwiesen.To increase the mechanical strength of the drive component, it can also be helped that the metal body has a design to improve the adhesive connection between the metal body and the jacket body. In this connection, it has been found to be particularly advantageous to make openings on the metal body for the insulating material of the jacket body to pass through.

Die erwünschte hohe mechanische Festigkeit des Antriebsbau­teiles ist mit Vorteil dadurch zu erreichen, daß der Metall­körper ein Profilteil mit U-förmigem Querschnitt aufweist. Eine weitere Steigerung der Festigkeit ist dadurch zu er­reichen, daß zwei mit ihren Mittelteilen aneinanderliegend verbundene U-Profilteile zur Bildung eines Metallkörpers mit I-Profil verwendet werden.The desired high mechanical strength of the drive component can advantageously be achieved in that the metal body has a profile part with a U-shaped cross section. A further increase in strength can be achieved in that two U-profile parts connected to one another with their central parts are used to form a metal body with an I-profile.

Als Mittel zur Verbesserung der haftenden Verbindung zwischen dem Metallkörper und dem Mantelkörper können die Mittelteile der verbundenen U-förmigen Profilteile korrespondierende Öffnungen für den Durchgriff des Isoliermaterials des Mantel­körpers aufweisen. Zusätzlich können Stege vorgesehen sein, die sich von wenigstens einem Rand jeder der korrespondieren­den Öffnungen erstrecken.As a means of improving the adhesive connection between the metal body and the jacket body, the middle parts of the connected U-shaped profile parts can have corresponding openings for the passage of the insulating material of the jacket body. In addition, webs can be provided which extend from at least one edge of each of the corresponding openings.

Geeignet zur Bildung des Metallkörpers ist ferner ein recht­eckiges Hohlprofil, insbesondere ein Hohlprofil mit quadratischer Form.A rectangular hollow profile, in particular a hollow profile with a square shape, is also suitable for forming the metal body.

Die Erfindung wird im folgenden anhand der in den Figuren dar­gestellten Ausführungsbeispiele näher erläutert.

  • Die Figuren 1 und 2 zeigen in zwei um 90° gegeneinander ge­drehten Draufsichten eine Schalttraverse für einen Nieder­spannungs-Leistungsschalter.
  • Die Figur 3 zeigt eine Stirnansicht der Schalttraverse gemäß den Figuren 1 und 2.
  • In den Figuren 4 und 5 ist gleichfalls in zwei um 90° gegen­einander gedrehten Draufsichten ein in der Schalttraverse gemäß den Figuren 1 und 2 enthaltener Metallkörper gezeigt.
  • Die Figur 6 zeigt eine Stirnansicht des Metallkörpers gemäß den Figuren 4 und 5.
  • In der Figur 7 ist gleichfalls in einer Stirnansicht ein Metallkörper mit einem quadratischen Profilteil dargestellt.
The invention is explained in more detail below with reference to the exemplary embodiments shown in the figures.
  • Figures 1 and 2 show in two plan views rotated 90 ° relative to each other a switching crossbeam for a low-voltage circuit breaker.
  • FIG. 3 shows an end view of the switching crossbar according to FIGS. 1 and 2.
  • FIGS. 4 and 5 likewise show a metal body contained in the switching crossbar according to FIGS. 1 and 2 in two plan views rotated by 90 ° with respect to one another.
  • FIG. 6 shows an end view of the metal body according to FIGS. 4 and 5.
  • FIG. 7 also shows a metal body with a square profile part in an end view.

In den Figuren 1 und 2 ist eine Schalttraverse 10 als Antriebs­bauteil in einem dreipoligen Niederspannungs-Leistungsschalter kompakter Bauart mit Formstoffgehäuse gezeigt. Die Schalt­traverse 10 umfaßt einen Mantelkörper 12 aus einem isolierenden Kunststoff und einen inneren Metallkörper 14.In Figures 1 and 2, a switching crossbeam 10 is shown as a drive component in a three-pole low-voltage circuit breaker compact design with molded housing. The switching crossbar 10 comprises a jacket body 12 made of an insulating plastic and an inner metal body 14.

Der Mantelteil 12 weist Isolierstoffschirme 16 auf, von denen je zwei beidseitig beidseitig eines als Armteil vorgesehenen Antriebsarmes 18 angeordnet sind, der zur gelenkigen Verbindung mit einer Antriebsvorrichtung des Leistungsschalters dient. An den Enden der Schalttraverse 10 und in dem Raum zwischen den beiden Paaren von Isolierstoffschirmen 16 bildet der Mantel­körper 12 Halter 20 zur Anbringung von Kontakthebeln. Im Bereich der Antriebsarme 18 und zwischen den zugehörigen Isolierstoff­schirmen 16 bildet der Mantelkörper 12 Teilstücke mit einem geringeren Querschnitt.The jacket part 12 has insulating material shields 16, two of which are arranged on both sides on both sides of a drive arm 18 which is provided as an arm part and is used for the articulated connection to a drive device of the circuit breaker. At the ends of the switching crossmember 10 and in the space between the two pairs of insulating shields 16, the jacket body 12 forms holders 20 for attaching contact levers. In the area of the drive arms 18 and between the associated insulating shields 16, the jacket body 12 forms sections with a smaller cross section.

Die Halter 20 weisen jeweils Löcher 24 für die Anbringung von Kontakthebeln, Löcher 26 für Zugfedern und Öffnungen 28 und 30 für Druckfedern auf. Die Löcher 24 dienen zur Befestigung eines Trägers der Kontakthebel an der Schalttraverse 10. Die Löcher 28 dienen zur Aufnahme von Kontaktkraftfedern für die Hauptkontakte entsprechend der Anzahl zu jedem Pol gehörender Kontakthebel. Die jeweils eine Öffnung 30 in jedem der Halter 20 dient sinngemäß zur Aufnahme einer Druckfeder, die als Kontaktkraftfeder für die Abbrand- oder Vorkontakte vorgesehen ist.The holders 20 each have holes 24 for the attachment of contact levers, holes 26 for tension springs and openings 28 and 30 for compression springs. The holes 24 are used to fasten a carrier of the contact levers to the switching cross member 10. The holes 28 are used to receive contact force springs for the main contacts in accordance with the number of contact levers belonging to each pole. The respective one opening 30 in each of the holders 20 serves to receive a compression spring, which is provided as a contact force spring for the erosion or pre-contacts.

Die Druckfedern bewirken eine im wesentlichen gleichmäßige Ver­teilung der Kraft auf die Kontaktstücke an den Kontakthebeln. Um diese Aufteilung der Kräfte zu erleichtern, ist der Kontakt­träger an der Schalttraverse derart angebracht, daß die Schalt­traverse 10 relativ zu dem Kontaktträger begrenzt beweglich ist, um eine Kompression der Druckfedern beim Schließen zu gestatten.The compression springs effect an essentially uniform distribution of the force on the contact pieces on the contact levers. In order to facilitate this division of the forces, the contact carrier is attached to the switching crossbar in such a way that the switching crossbar 10 can be moved to a limited extent relative to the contact carrier. to allow compression of the compression springs when closing.

Die in den Löchern 24 anzubringenden Zugfedern dienen zur Bereitstellung der Öffnungskraft an der Schalttraverse 10 der­art, daß die Kontaktanordnungen geöffnet werden.The tension springs to be fitted in the holes 24 serve to provide the opening force on the switching crossmember 10 in such a way that the contact arrangements are opened.

In den Figuren 4, 5 und 6 sind Einzelheiten des in der Schalt­traverse 10 gemäß den Figuren 1, 2 und 3 enthaltenen Metall­körpers 14 dargestellt. Insbesondere den Figuren 1 und 2 ist zu entnehmen, daß Metallkörper 14 etwas kürzer als die Schalt­traverse 10 bemessen ist, wodurch auch die Stirnseiten des Metallkörpers von dem isolierenden Kunststoff des Mantelteiles 12 bedeckt ist. Der Metallkörper 14 weist die Antriebsarme 18 auf, die aus zwei einander gegenüberstehend angeordneten Winkelstücken 36 bestehen. In jedem der Winkelstücke 36 ist eine Öffnung für einen Stift angebracht, der zur Verbindung der Schalttraverse mit der Antriebsvorrichtung des Leistungs­schalters dient. Im Querschnitt ist der Metallkörper 14 im wesentlichen I-förmig ausgebildet. Um diese Querschnittsform bereitzustellen, sind zwei U-förmige bzw. C-förmige Profilteile 32 mit ihren Mittelteilen aneinanderliegend verbunden. Die Winkelstücke 36 liegen auf den benachbarten Schenkeln der beiden Profilteile 32 auf und schließen mit diesen etwa bündig ab.FIGS. 4, 5 and 6 show details of the metal body 14 contained in the switching crossbar 10 according to FIGS. 1, 2 and 3. It can be seen in particular from FIGS. 1 and 2 that the metal body 14 is dimensioned somewhat shorter than the switching crossmember 10, as a result of which the end faces of the metal body are also covered by the insulating plastic of the jacket part 12. The metal body 14 has the drive arms 18, which consist of two angle pieces 36 arranged opposite one another. In each of the elbows 36 there is an opening for a pin, which is used to connect the switch crossbar to the drive device of the circuit breaker. In cross section, the metal body 14 is essentially I-shaped. In order to provide this cross-sectional shape, two U-shaped or C-shaped profile parts 32 are connected to one another with their central parts. The elbows 36 rest on the adjacent legs of the two profile parts 32 and close with them approximately flush.

Um eine besonders feste Bindung zwischen dem Metallkörper 14 und dem Mantelkörper 12 zu erzielen, ist der Metallkörper 14 mit Öffnungen 33 versehen, die korrespondierend in den Mittel­teilen beider Profilteile 32 angebracht sind. Jeweils an einem Rand jeder Öffnung 33 ist ein Steg 34 angeordnet, z. B. durch Herausbiegen aus der Öffnung 33, um eine feste Verankerung des isolierenden Kunststoffes an dem Metallkörper 14 zu erreichen. Jeweils eine Anordnung von Öffnungen 33 und Stegen 34 befindet sich im Bereich jedes der drei Halter 20.In order to achieve a particularly firm bond between the metal body 14 and the casing body 12, the metal body 14 is provided with openings 33 which are correspondingly provided in the middle parts of both profile parts 32. At each edge of each opening 33, a web 34 is arranged, for. B. by bending out of the opening 33 to achieve a firm anchoring of the insulating plastic on the metal body 14. An arrangement of openings 33 and webs 34 is located in the area of each of the three holders 20.

Während in dem vorstehend beschriebenen Ausführungsbeispiel 2 U- bzw. C-förmige Profilteile zur Bildung des Metallkörpers 14 benutzt werden, kann auch ein einzelnes U- oder C-förmiges Profilteil verwendet werden. Ferner zeigt die Figur 7, daß auch ein rechteckiges bzw. quadratisches Profilteil 38 geeignet ist, das etwa dem Gesamtquerschnitt der beiden Profilteile 32 in der Figur 6 entspricht.While in the above-described embodiment 2 U- or C-shaped profile parts are used to form the metal body 14, a single U- or C-shaped profile part can also be used. FIG. 7 also shows that a rectangular or square profile part 38 is also suitable, which corresponds approximately to the overall cross section of the two profile parts 32 in FIG. 6.

Gegenüber den dargestellten Ausführungsbeispielen sind zahlreiche Abwandlungen möglich, ohne vom Inhalt der Erfindung abzuweichen. Dies betrifft insbesondere die Gestaltung derjenigen Bereiche, die zur Verbesserung der Haftung zwischen dem Mantelteil 12 und dem Metallkörper 14 dienen.Numerous modifications are possible compared to the illustrated exemplary embodiments without departing from the content of the invention. This applies in particular to the design of those areas which serve to improve the adhesion between the jacket part 12 and the metal body 14.

Claims (8)

1. Antriebsbauteil (10) mit Armteilen (18) zur gelenkigen Ver­bindung mit einer Antriebsvorrichtung zur gleichzeitigen Be­tätigung von bewegbaren Kontakthebeln eines mehrpoligen Nieder­spannungs-Leistungsschalters, mit einem im wesentlichen der Länge des Antriebsbauteiles (10) entsprechend bemessenen inneren Metallkörper (14) und einem fest mit diesem verbundenen äußeren Mantelkörper (12) aus Isolierstoff als Träger von Haltern (20) für Kontakthebel sowie zwischen den Polen ange­ordneten Isolierstoffschirmen (16) zum Schutz gegen Überschläge zwischen benachbarten Polen, dadurch gekennzeichnet, daß der Metallkörper (14) auf seiner ganzen Länge mit einer dünnwandigen abgewinkelten Querschnittsform ausgebildet ist, daß die Armteile (18) an dem Metallkörper (14) befestigt sind und daß die Isolierstoff­schirme (16) Bestandteil des Mantelkörpers (12) aus Isolier­stoff sind.1. Drive component (10) with arm parts (18) for articulated connection with a drive device for the simultaneous actuation of movable contact levers of a multi-pole low-voltage circuit breaker, with an inner metal body (14) dimensioned substantially according to the length of the drive component (10) and a fixed one connected to this outer jacket body (12) made of insulating material as a carrier of holders (20) for contact levers and between the poles arranged insulating shields (16) for protection against flashovers between adjacent poles, characterized in that the metal body (14) along its entire length a thin-walled, angled cross-sectional shape is formed such that the arm parts (18) are fastened to the metal body (14) and that the insulating material shields (16) are part of the jacket body (12) made of insulating material. 2. Antriebsbauteil nach Anspruch 1, dadurch gekennzeichnet, daß der Metallkörper (14) eine Ausbildung zur Verbesserung der haftenden Verbindung zwischen dem Metallkörper (14) und dem Mantelkörper (12) aufweist.2. Drive component according to claim 1, characterized in that the metal body (14) has a design to improve the adhesive connection between the metal body (14) and the jacket body (12). 3. Antriebsbauteil nach Anspruch 2, dadurch gekennzeichnet, daß der Metallkörper (14) Öffnungen (33) für den Durchgriff des Isolierstoffes des Mantelkörpers (12) aufweist.3. Drive component according to claim 2, characterized in that the metal body (14) has openings (33) for the passage of the insulating material of the casing body (12). 4. Antriebsbauteil nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Metallkörper (14) ein Profilteil (32) mit U-förmigem Quer­schnitt aufweist.4. Drive component according to one of the preceding claims, characterized in that the metal body (14) has a profile part (32) with a U-shaped cross section. 5. Antriebsbauteil nach Anspruch 4, dadurch gekennzeichnet, daß der Metallkörper (14) aus zwei mit ihren Mittelteilen aneinanderliegend verbundenen U-Profilteilen (32) zur Bildung eines I-Profiles besteht.5. Drive component according to claim 4, characterized in that the metal body (14) consists of two U-profile parts (32) connected to one another with their central parts to form an I-profile. 6. Antriebsbauteil nach Anspruch 5, dadurch gekennzeichnet, daß die Mittelteile der ver­bundenen U-förmigen Profilteile (32) korrespondierende Öffnungen (33) für den Durchgriff des Isoliermaterials des Mantelkörpers (12) aufweisen.6. Drive component according to claim 5, characterized in that the central parts of the connected U-shaped profile parts (32) have corresponding openings (33) for the passage of the insulating material of the casing body (12). 7. Antriebsbauteil nach Anspruch 6, dadurch gekennzeichnet, daß sich von wenigstens einem Rand jeder der korrespondierenden Öffnungen (33) ein Steg (34) erstreckt.7. Drive component according to claim 6, characterized in that a web (34) extends from at least one edge of each of the corresponding openings (33). 8. Antriebsbauteil nach Anspruch 1, dadurch gekennzeichnet, daß der Metallkörper als recht­eckiges Hohlprofilteil (38) ausgebildet ist.8. Drive component according to claim 1, characterized in that the metal body is designed as a rectangular hollow profile part (38).
EP89250027A 1988-09-08 1989-09-07 Driving element for a multipole low tension electrical power circuit breaker Expired - Lifetime EP0358287B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US242091 1988-09-08
US07/242,091 US4866225A (en) 1988-09-08 1988-09-08 Insulated light weight metallic crossbar in polyphase circuit breaker assemblies for inhibiting arcing

Publications (3)

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EP0358287A2 true EP0358287A2 (en) 1990-03-14
EP0358287A3 EP0358287A3 (en) 1991-11-06
EP0358287B1 EP0358287B1 (en) 1994-11-30

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ID=22913414

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EP89250027A Expired - Lifetime EP0358287B1 (en) 1988-09-08 1989-09-07 Driving element for a multipole low tension electrical power circuit breaker

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US (1) US4866225A (en)
EP (1) EP0358287B1 (en)
JP (1) JPH02117023A (en)
CA (1) CA1330818C (en)
DE (1) DE58908680D1 (en)
ES (1) ES2064427T3 (en)

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EP0434259A1 (en) * 1989-12-19 1991-06-26 Nomix-Chipman Limited Electronic control of fluid flow rate
EP1215695A2 (en) * 2000-12-13 2002-06-19 Siemens Aktiengesellschaft Movable contact support for mounting contactlevers for low voltage circuit breakers
WO2002082481A1 (en) * 2001-04-04 2002-10-17 Siemens Aktiengesellschaft Switching contact arrangement for a power switch

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DE10222010C1 (en) * 2002-05-17 2003-11-20 Moeller Gmbh Circuit breakers for high currents and low voltage
DE10222011C1 (en) * 2002-05-17 2003-11-20 Moeller Gmbh Circuit breakers for high currents and low voltage

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US3657723A (en) * 1970-04-09 1972-04-18 Square D Co Segmented insulator for contact blade drive bar of a manual switch
DE2757696B1 (en) * 1977-12-22 1978-11-02 Siemens Ag Multi-pole low-voltage circuit breaker with a switching shaft supporting contact arms
FR2484136A1 (en) * 1980-06-06 1981-12-11 Merlin Gerin Contact element for high current LV circuit breaker - has movable contact plates which are joined by brazing of contact head and shunt at opposite ends of body

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0434259A1 (en) * 1989-12-19 1991-06-26 Nomix-Chipman Limited Electronic control of fluid flow rate
EP1215695A2 (en) * 2000-12-13 2002-06-19 Siemens Aktiengesellschaft Movable contact support for mounting contactlevers for low voltage circuit breakers
EP1215695A3 (en) * 2000-12-13 2002-09-25 Siemens Aktiengesellschaft Movable contact support for mounting contactlevers for low voltage circuit breakers
WO2002082481A1 (en) * 2001-04-04 2002-10-17 Siemens Aktiengesellschaft Switching contact arrangement for a power switch
US7068131B2 (en) 2001-04-04 2006-06-27 Siemens Aktiengesellschaft Switching contact arrangement for a power switch

Also Published As

Publication number Publication date
CA1330818C (en) 1994-07-19
US4866225A (en) 1989-09-12
DE58908680D1 (en) 1995-01-12
JPH02117023A (en) 1990-05-01
ES2064427T3 (en) 1995-02-01
EP0358287B1 (en) 1994-11-30
EP0358287A3 (en) 1991-11-06

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