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DE1227978B - Electrical switchgear, in particular contactor - Google Patents

Electrical switchgear, in particular contactor

Info

Publication number
DE1227978B
DE1227978B DEL46021A DEL0046021A DE1227978B DE 1227978 B DE1227978 B DE 1227978B DE L46021 A DEL46021 A DE L46021A DE L0046021 A DEL0046021 A DE L0046021A DE 1227978 B DE1227978 B DE 1227978B
Authority
DE
Germany
Prior art keywords
contact piece
switching device
legs
piece
leg
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.)
Pending
Application number
DEL46021A
Other languages
German (de)
Inventor
Werner Gentz
Dipl-Ing Kurt Geyer
Rolf Guenzel
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DEL46021A priority Critical patent/DE1227978B/en
Publication of DE1227978B publication Critical patent/DE1227978B/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/44Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00Contacts
    • H01H1/12Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14Contacts characterised by the manner in which co-operating contacts engage by abutting

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)

Description

Elektrisches Schaltgerät, insbesondere Schaltschütz Die Erfindung betrifft ein elektrisches Schaltgerät, insbesondere Schaltschütz mit eine Stromschleife bildenden Kontaktstücken, deren einer Schenkel mit einer Kontaktstückauflage versehen und in Richtung zu einer Lichtbogenkammer über die Kontaktstückauflage hinaus verlängert ist und deren anderer Schenkel an einer Anschlußklemmen tragenden Stromschiene befestigt ist oder selbst die Anschlußklemmen enthält.Electrical switching device, in particular contactor The invention relates to an electrical switching device, in particular a contactor with a current loop forming contact pieces, one leg of which is provided with a contact piece support and extended in the direction of an arcing chamber beyond the contact piece support is and the other leg attached to a terminal carrying busbar or even contains the terminals.

Bekannt ist ein Schaltgerät, dessen Kontaktstück eine Schleife bildet und zwei Schenkel aufweist, von denen der eine Schenkel mit einer Kontaktstückauflage aus sogenanntem Kontaktmaterial versehen ist. Zur Verlängerung dieses Schenkels in Richtung auf eine Lichtbogenlöschkamrner schließt an die Kontaktstückauflage ein aus Eisenblech bestehender Ansatz, der sich isoliert auf einer Anschlußschiene abstützt, auf der auch das Kontaktstück befestigt ist. Durch die Abstützung des freien Endes des Ansatzes soll erreicht werden, daß das Kontaktstück keine federnde Eigenschaften haben kann (deutsche Auslegeschrift 1030 422).A switching device is known whose contact piece forms a loop and has two legs, one of which is provided with a contact piece support made of so-called contact material. To extend this leg in the direction of an arc extinguishing chamber, the contact piece support is followed by an attachment made of sheet iron, which is supported in an isolated manner on a connecting rail on which the contact piece is also attached. By supporting the free end of the approach, the aim is to ensure that the contact piece cannot have any resilient properties (German Auslegeschrift 1030 422).

Durch eine solche einseitige Abstützung läßt sich indessen eine federnde Durchbiegung und noch weniger eine infolge des Aufschlages des beweglichen Kontaktstückes sich ergebende Dauerverformung nicht vermeiden. Die letztere Verfonnung kann dadurch eintreten, daß durch die beim Auflöten der Kontaktstückauflage erforderliche Erwärmung ein an und für sich genügend hartes Kontaktstück an Härte verliert und somit durch das aufschlagende bewegliche Kontaktstück verformt (verbogen) werden kann.By such a one-sided support, however, can be a resilient Deflection and even less as a result of the impact of the movable contact piece Do not avoid resulting permanent deformation. The latter constitution can thereby occur that by the heating required when soldering the contact piece support a contact piece that is sufficiently hard in and of itself loses its hardness and thus through the impacting movable contact piece can be deformed (bent).

Dieser Nachteil wird erfindungsgemäß dadurch beseitigt, daß beide Schenkel des Kontaktstückes ira Bereich der freien Enden mechanisch miteinander starr verbunden und im Bereich des Verbindungsmittels voneinander elektrisch isoliert sind. Es dient dazu zweckmäßig ein Paßstück aus einem isolierenden Material, das von beiden Schenkeln umfaßt wird und mit dem sowohl der eine als auch der andere Schenkel mechanisch verbunden, z. B. verschraubt ist.This disadvantage is eliminated according to the invention in that both Legs of the contact piece mechanically with one another in the area of the free ends rigidly connected and electrically isolated from one another in the area of the connecting means are. It is expediently a fitting made of an insulating material that is encompassed by both legs and with both one and the other Legs mechanically connected, e.g. B. is screwed.

Weitere Merkmale der Erfindung gehen aus den Patentansprüchen und der Beschreibung von Ausführungsbeispielen hervor.Further features of the invention can be found in the claims and the description of exemplary embodiments.

In der Zeichnung sind Ausführungsbeispiele schematisch dargestellt. Es zeigt F i g. 1 ein Kontaktstück in der Ansicht; F i g. 2 ist eine Seitenansicht zu F i g. 1; F i g. 3 ist eine Draufsicht; F i g. 4 ist ein Seitenriß eines Kontaktstückes, bei dem ein Paßstück unter Zwischenlage von elastischen Schichten benutzt ist; F i g. 5 zeigt eine Variante in bezug auf die Vereinigung eines Paßstückes mit den Schenkeln des Kontaktstückes.Exemplary embodiments are shown schematically in the drawing. It shows F i g. 1 a contact piece in the view; F i g. 2 is a side view of FIG. 1; F i g. 3 is a plan view; F i g. Fig. 4 is a side elevation view of a contact piece employing a fitting with resilient layers therebetween; F i g. 5 shows a variant with regard to the union of a fitting piece with the legs of the contact piece.

Nach der Zeichnung weist das Schaltstück, das z. B. das feste Kontaktstück eines Schaltschützes ist, die Schenkel 1, 2 auf. An dem Schenkel 2 sitzt die aus Kontaktmaterial bestehende Schaltstückauflage. Der Schenkel 2 ist über die Kontaktstückauflage 3 hinaus in Richtung auf eine nicht dargestellte Lichtbogenlöschkammer verlängert. Das Schaltstück besteht aus Kupfer oder Messing und ist gegossen. Es ist an einer Stromschiene 4 befestigt, in der auch die nicht dargestellten Klemmenschrauben zum Anschluß äußerer Leitungen sitzen. Mit 5 ist das bewegliche Kontaktstück, z. B. eine Kontaktbrücke, angedeutet.According to the drawing, the contact piece, the z. B. is the fixed contact piece of a contactor, the legs 1, 2 on. The contact piece support, which is made of contact material, is seated on leg 2. The leg 2 is extended beyond the contact piece support 3 in the direction of an arc extinguishing chamber, not shown. The contact piece is made of copper or brass and is cast. It is attached to a busbar 4 in which the terminal screws (not shown) for connecting external lines are also located. With 5 the movable contact piece, for. B. a contact bridge, indicated.

6 ist ein Isolierkörper, der aus einem wärmebeständigen, nicht spröden Material, z. B. einem Preßstoff Typ 8106, besteht. Dieser Körper bildet ein Paßstück, mittels dessen die Schenkel 1, 2 des Kontaktstückes voneinander isoliert mechanisch vereinigt sind. -Dazu dienen z. B. die Schrauben 7, 8, mit denen einerseits der Schenkel 1, andererseits der Schenkel 2 mit dem Paßstück 6 verbunden wird. Das Paßstück 6 braucht dazu nur Durchgangslöcher zu haben, und die Schrauben 7, 8 werden mittels Muttern festgelegt. 6 is an insulating body made of a heat-resistant, non-brittle material, e.g. B. a molding material type 8106 exists. This body forms a fitting piece, by means of which the legs 1, 2 of the contact piece are mechanically combined isolated from one another. -To serve z. B. the screws 7, 8, with which on the one hand the leg 1, on the other hand the leg 2 is connected to the fitting piece 6 . The fitting piece 6 only needs to have through holes, and the screws 7, 8 are fixed by means of nuts.

Das Kontaktstück kann auf der Schine 4 durch Verschraubung befestigt werden. Dazu sind in dem Schenkel 1 die Bohrungen 9, 10 vorgesehen, und, das Paßstück 6 enthält eine zentrale Bohrung 11, durch die die eine Befestigungsschraube zugänglich ist, während das freie Ende des Paßstückes, wie das aus der Draufsicht (F i g. 3) ersichtlich ist, gabelartig ausläuft, so daß auch hier eine Befestigungsschraube zugänglich ist.The contact piece can be attached to the rail 4 by screwing. For this purpose, the bores 9, 10 are provided in the leg 1 , and the fitting piece 6 contains a central bore 11 through which the one fastening screw is accessible, while the free end of the fitting piece, as shown in the plan view ( Fig. 3 ) can be seen, runs like a fork, so that a fastening screw is also accessible here.

Ein solches Schaltstück verhält sich, obwohl es eine Stromschleife bildet, wie ein kompakter, formstabiler Körper.Such a contact behaves even though it is a current loop forms like a compact, dimensionally stable body.

Kontaktprellungen eines aus dem festen und dem beweglichen Kontaktstück bestehenden Kontaktsystems werden an sich durch Gestalt und Bemessung des beweglichen Kontaktsystems vermieden bzw. verringert. Ene weitere Verringerung von Kontaktprellungen kann gemäß der Ausführung nach F i g. 4 dadurch bewirkt werden, daß das feste Kontaktstück zwar einen kompakten und formstabilen Körper darstellt, daß aber das Päßstück 6 unter Zwischenlage elastischer Schichten, z. B. Platten 12, 13, mit dem Schaltstück verbunden ist. Unter Umständen genügt auch nur eine solcher Zwischenlagen. Das Ganze läßt sich dann so diniensionieren, daß das feste Schaltstück eine bestimmte optimale Eigenfrequenz und Amplitude hat.Contact bounces of a contact system consisting of the fixed and the movable contact piece are actually avoided or reduced by the shape and dimensioning of the movable contact system. A further reduction in contact bruises can, according to the embodiment according to FIG. 4 are caused by the fact that the fixed contact piece is a compact and dimensionally stable body, but that the fitting piece 6 with the interposition of elastic layers, eg. B. plates 12, 13, is connected to the contact piece. Under certain circumstances, just one such intermediate layer is sufficient. The whole thing can then be dimensioned so that the fixed contact piece has a certain optimal natural frequency and amplitude.

Wie sich aus F i g. 1 ergibt, ist das Paßstück 6 schmaler als die' Schenkel 1, 2, d. h., es ist gegen die äußeren Kanten dieser Schenkel zurückgesetzt. Daher ist -es selbst bei Lichtbogenfußbildung an diesen Kanten der Wirkung des Lichtbogens entzogen.As can be seen from FIG. 1 results, the fitting piece 6 is narrower than the 'legs 1, 2, d. i.e., it is set back against the outer edges of these legs. Therefore, the effect of the arc is withdrawn from the effect of the arc even if an arc root is formed at these edges.

Die Vereinigung des PaßsiÜckes 6 mit den Schenkeln des Schaltstückes kann gemäß F i g, 5 dadurch erfolgen, daß das Schaltstück und das Paßstück zusanimengesteckt.werden. Dazu sind diese Teile mit Ansätzen 14"15, die z. B. schwalbenschwanzförmig sind, und entsprechenden Nuten versehen. Die Ansätze und Nuten brauchen sich nur über einen Teil der Länge der Schenkel des Schaltstückes bzw. des Paßstückes zu erstrecken, da die Festlegung des Schaltstückes an sich auf seiner Unterlage, z. B. der Stromschiene 4, wie bei dem Ausführungsbeispiel nach F i g. 2 erfolgt.The union of the fitting 6 with the legs of the contact piece can be done according to FIG. 5 in that the contact piece and the fitting piece are connected together. For this purpose, these parts are provided with projections 14 "15, which are, for example, dovetail-shaped, and corresponding grooves contact piece takes place itself on its base, for. example, the bus bar 4, g as in the embodiment of F i. 2,.

Das Paßstück 6 wird zweckmäßig so ausgeführt, daß seine Toleranzen etwa der Laufpassung nach DIN 7182 entsprechen. Dann ist bei leichter Montage des Paßstückes das Schaltstück mit dem Paßstück verspannt. Eine etwaige Schrägstellung des Schenkels 2 zum Schenkel 1 kann nicht stören, da sie dauernd beibehalten wird und das bewegliche Kontaktstück 5 sich in bekannter Ausführung auf das feste Kontaktstück einstellen kann.The fitting piece 6 is expediently designed so that its tolerances correspond approximately to the running fit according to DIN 7182. Then with easy assembly of the adapter, the contact piece is clamped to the adapter. Any inclination of the leg 2 to the leg 1 cannot be a problem, since it is maintained permanently and the movable contact piece 5 can adjust to the fixed contact piece in a known embodiment.

Claims (2)

Patentansprüche: 1. Elektrisches Schaltgerät, insbesondere Schaltschütz mit eine Stromschleife bildenden Kontaktstücken, deren einer Schenkel mit einer Kontaktstückauflage versehen und in Richtung zu einer Lichtbogenkammer über die Kontaktstückauflage hinaus verlängert ist und deren anderer Schenkel an einer Anschlußklemmen tragenden Stromschiene befestigt ist oder selbst die Anschlußldemmen enthält, dadurch gek e n n z e i c h n e t, daß beide Schenkel (1, 2) im Bereich der freien Enden mechanisch miteinander starr verbunden und im Bereich des Verbindungsmittels (7, 8) voneinander elektrisch isoliert sind. Claims: 1. Electrical switching device, in particular contactor with a current loop forming contact pieces, one leg of which is provided with a contact piece support and is extended in the direction of an arc chamber beyond the contact piece support and the other leg is attached to a busbar carrying connecting terminals or even contains the connecting terminals , characterized in that both legs (1, 2) are mechanically rigidly connected to one another in the region of the free ends and are electrically isolated from one another in the region of the connecting means (7, 8). 2. Schaltgerät nach Anspruch 1, dadurch gekennzeichnet, daß beide Schenkel ein nahezu über die ganze Länge der Schenkel gehendes Paßstück (6) aus einem isolierenden Material umfassen, das sowohl mit dem einen (1) als auch mit dem anderen Schenkel(2) mechanisch verbunden, z. B. verschraubt ist. 3. Schaltgerät nach Anspruch 1 und 2, dadurch gekennzeichnet, daß das Paßstück (6) und/odei die Schenkel (1, 2) des- Kontaktstückes mit Ansätzen und entsprechenden Einschnitten (14, 15) ineinandergreifen. - - 4. Säaltgerlit nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß das Kontaktstück samt Paßstück durch Festlegung des Kontäktstückes auf seiner Unierlage (4) befestigt ist. - 5. Schaltgerät nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß die Breite des Paßstückes geringer als die Schenkelbreite. des Kontaktstückes ist. 6. Schaltgerät nach Anspruch 1 bis 5, dadurch gekennzeichnet, daß das Verbindungsmittel (Paßstück 6) als im statischen Zustand starrer, im, dynamischen Zustand elastischer Körper ausgebildet ist. 7. Schaltgerät nach Anspruch 1 bis 5, dadurch gekennzeichnet, daß zwischen dem Paßstück und den Schenkeln des Kontaktstückes elastische Zwischenlagen (12, 13) eingelegt sind. 8. Schaltgerät nach Anspruch 1 bis 7, dadurch gekennzeichnet, daß die elastischen Körper aus hochhitzbeständigem gummielastischem Material oder aus steifen Blattfedem bestehen. In Betracht gezogenen Druckschriften Deutsche Auslegeschrift Nr. 1132 639; USA.-Patentschrift Nr. 2 340 682. 2. Switching device according to claim 1, characterized in that both legs comprise a fitting piece (6) made of an insulating material extending almost over the entire length of the legs and mechanically connected to both one (1) and the other leg (2) connected, e.g. B. is screwed. 3. Switching device according to claim 1 and 2, characterized in that the fitting piece (6) and / or the legs (1, 2) of the contact piece with lugs and corresponding incisions (14, 15) interlock. - - 4. Säaltgerlit according to claim 1 to 3, characterized in that the contact piece together with the fitting piece is fastened by fixing the contact piece on its Unierlage (4). - 5. Switching device according to claim 1 to 4, characterized in that the width of the fitting piece is less than the leg width. of the contact piece is. 6. Switching device according to claim 1 to 5, characterized in that the connecting means (fitting piece 6) is designed as a rigid body in the static state and elastic in the dynamic state. 7. Switching device according to claim 1 to 5, characterized in that elastic intermediate layers (12, 13) are inserted between the fitting piece and the legs of the contact piece. 8. Switching device according to claim 1 to 7, characterized in that the elastic body consists of highly heat-resistant rubber-elastic material or of stiff leaf springs. Considered publications German Auslegeschrift No. 1132 639; U.S. Patent No. 2,340,682.
DEL46021A 1963-10-04 1963-10-04 Electrical switchgear, in particular contactor Pending DE1227978B (en)

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DEL46021A DE1227978B (en) 1963-10-04 1963-10-04 Electrical switchgear, in particular contactor

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