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EP0000711B1 - Contactor with readily accessible wire connecting terminals disposed at different levels - Google Patents

Contactor with readily accessible wire connecting terminals disposed at different levels Download PDF

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Publication number
EP0000711B1
EP0000711B1 EP78100433A EP78100433A EP0000711B1 EP 0000711 B1 EP0000711 B1 EP 0000711B1 EP 78100433 A EP78100433 A EP 78100433A EP 78100433 A EP78100433 A EP 78100433A EP 0000711 B1 EP0000711 B1 EP 0000711B1
Authority
EP
European Patent Office
Prior art keywords
contact
housing
plane
connecting screws
fastening plane
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
Application number
EP78100433A
Other languages
German (de)
French (fr)
Other versions
EP0000711A1 (en
Inventor
Helmut Lemmer
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.)
Square D Starkstrom GmbH
Original Assignee
Square D Starkstrom 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 Square D Starkstrom GmbH filed Critical Square D Starkstrom GmbH
Publication of EP0000711A1 publication Critical patent/EP0000711A1/en
Application granted granted Critical
Publication of EP0000711B1 publication Critical patent/EP0000711B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/14—Terminal arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/301—Clamped connections, spring connections utilising a screw or nut clamping member having means for preventing complete unscrewing of screw or nut

Definitions

  • the invention relates to a contactor, in particular a power contactor or auxiliary contactor, with a contact system accommodated in a housing, remote from the mounting level, and a magnet system that actuates the contact system and is arranged between the mounting level and the mounting level, the housing at the end remote from the mounting level is closed by a cover, which runs perpendicular to the housing mounting plane and is assigned to the contact terminal screws in the form of holes, the contact system further comprising contact rails with contact terminals located on two opposite sides of the housing and with fixed contact pieces as well as jointly operable, as openers and / or Closer-acting bridges with movable contact pieces, wherein also the contact terminal screws in two parallel to the mounting plane and at a distance from each other in rows and in stages de are arranged so that their distance from the level of the protective means becomes smaller as the distance from the mounting level increases, and finally the fixed contact pieces of the contact rails provided in the two levels each lie in pairs on the perpendicular to the housing mounting level in switching chambers arranged one above
  • the contact connection screws are provided in two or more levels in the contactor that run parallel to the mounting level.
  • the wiring is first carried out on the contact connection screws, which are located in a level closest to the mounting level. Only then can the wiring be made on the contact connection screws in the level or levels that are at a greater distance from the mounting level of the control cabinet.
  • a special construction of a switching chamber with fixed contact parts inserted into openings in the walls is known from DE-GM 7 415 932.
  • the contact connection screws in the two superimposed levels are arranged in such a way that their distance from the protective agent level becomes smaller as the distance from the mounting level increases, but all contact connection screws of the superimposed contact rails lie in a cross-sectional plane in which the contact rails lying one above the other are located run. If the wirings are provided on all contact connection screws, the upper wirings cover the contact connection screws with their wirings which lie below. Again, it is not possible, for example with a screwdriver, to get to the lower contact connection screws from above, ie perpendicular to the mounting plane, without first removing the upper wiring.
  • an electromagnetic switching device is known from FR-PS 1 301 590, which essentially consists of a lower part and an upper part, which can be plugged together.
  • the lower part to be located on the fastening plane has, on two opposite sides at a distance from each other, contact connection screws with contact rails, which in turn carry fixed contact pieces and cooperate with electromagnetically actuated movable contact pieces. If there is a gap with these contact connection screws, further connection screws are provided in a lower level, which are connected to plug contacts. After assembly of the entire device, however, all of the aforementioned contact connection screws are from further corresponding contact connection covered screws on the upper part, which contains other contacts in addition to the magnet system.
  • FR-PS 1 291 800 an electrical switching device is known, wherein flexible, differently laterally cranked current-conducting connections are provided for the connection between device parts. These laterally cranked flexible connections together with their fastening screws on both sides are located under a closed device cover when the device is fully assembled, so that the connecting screws are not accessible at all. There is also no need for this, these electrical connections are not contact rails with contact connection screws for wiring leading to the outside, but only intermediate connections within the device.
  • the differently offset design of these electrical connections also has nothing to do with the accessibility of the connecting screws, but is based on random arrangement conditions within the device.
  • the present invention has for its object to provide a contactor in which there is a simple handling of the connection options of the wiring and in which the wiring can optionally be carried out on the upper and on the lower contact connection screws or vice versa or the contact connection screws can be tightened, without the width of the contactor specified in practice and limited depending on the number of poles need to be increased.
  • the object is achieved according to the invention in that the long contact rails to be located according to the fastening plane are cranked laterally within their planes with an obliquely running rail part in such a way that their contact connecting screws are located in the middle plane between the contact connecting screws lying away from the fastening plane, and that Contact connection screws for the coil of the magnet system are also arranged laterally offset from the contact connection screws of the other level in the area of the level of the contact rails to be located after the housing mounting level, so that all contact connection screws are freely accessible when the wiring is provided.
  • the invention is preferably used for power contactors up to 7.5 kW and for auxiliary contactors up to 20 A continuous current, optionally for four and eight contacts.
  • the contactor has a housing made of plastic, in which a contact system and a magnet system actuating the contact system are accommodated, the housing being closed off at the end remote from the fastening side 1 by a cover 2, the contact system comprising contact rails 3, 4 and 5 Contact terminal screws 6, 7 and 8 and with fixed contact pieces 9, 10 and 11.
  • the contact system also includes movable contact pieces 12, 13, 14 and 15, which are each seated on only half of the bridges 16, 17, 18 and 19 shown in FIG. 1, these bridges being used in a manner known per se in a common bridge support 20, with the interposition of springs 21 in corresponding recesses.
  • the contact bridges can be used so that they act either as openers or closers.
  • the housing which encloses the previously explained contact system, is divided into planes running parallel to the housing mounting plane, namely this housing consists of a lower housing part 22, a housing part 23 arranged above it and the cover 2 or, if a switching chamber base is interposed, a further housing part 24
  • the contactor according to FIG. 1 can thus be converted from a four-pole contactor into an eight-pole or vice versa in a few simple steps.
  • the lower housing part 22 with foot part 25 largely encloses the magnet system, namely once the core 26 with short-circuit rings 27 and coil 28 and the vertically movable armature 29, which, however, after removal of the housing parts 23, 24 so protrudes far in the lowest position so that it can be easily lifted off and the other parts of the magnet system can be removed from the housing.
  • the armature 29 is connected to the bridge holder 20 in a suitable manner for the joint actuation of the contacts.
  • a rubber plate 30 is provided between the core 26 and a fastening plate 31.
  • a movable in the direction of the arrows shown slide 32 is provided, which in the right position with its nose 32a engages behind the edge of a U-shaped mounting rail 33 of the control cabinet, while the opposite edge 33a U-shaped rail for insertion can be pushed behind a notched part 31a of the fastening rail 31.
  • a transverse strip-like projection 30a of the rubber plate 30 presses against the edge of the U-profile from above and prevents the contactor from moving laterally on the profile.
  • FIGS. 2 and 3 in connection with the right part of FIG. 1 illustrate that the contact rails 4, 5 with their contact connection screws 7, 8 are arranged in planes offset from one another in planes at different distances from the housing end 1 used for fastening such that each contact connection screw 7, 8 is freely accessible when the wiring 34 is provided.
  • the contact rails are preferably arranged in two planes spaced apart from one another, the contact rails 5 of the cover-side plane being chosen to be shorter than the contact rails 4 of the other plane.
  • the contact rails 3 and 4 are shaped within their planes such that the fixed contact pieces 9, 10 and 11 of the contact rails provided in the two planes each lie in pairs on the perpendicular to the housing mounting plane 1.
  • the contact rails of at least one level in the exemplary embodiment according to FIG. 2 the long contact rails 3, 4, are provided with an inclined part 3a or 4a.
  • FIGS. 2 and 3 show two further contact connection screws 35 and 36. These are the contact connection screws for the coil 28 of the magnet system, namely these contact connection screws in the area of the level of the contact rails 3, 4 or their contact connection screws 6, 7 arranged.
  • spring contacts are provided on the division plane 37 (FIG. 1) between the housing part 22 of the magnet system and the housing part 23 of the contact system, which essentially consist of two parts exist, a part on the underside of the housing part 23 and another part on the top of the housing part 22.
  • guides 2a, 24a are provided in the switching chamber base 24 and in the cover 2, which run perpendicular to the housing mounting plane 1 and are assigned to the contact connection screws 6, 7, 8, for the use of a screwdriver shaft.
  • These guides are expediently designed as cylindrical holes, the diameter of the holes being chosen to be smaller than the screw head 6a, 7a, 8a of the contact connection screws.
  • the contact connection screws 6, 7, 8 and 35, 36 each cooperate with terminals 44 (FIG. 7) that open after two opposite side surfaces 42, 43 of the switching chamber base 24, so that the connecting lines 34 can be inserted one or more times.
  • the terminals are expediently provided with self-opening clamping disks.
  • the clamp 44 has an essentially rectangular frame. When the ends of the connecting lines 34 are inserted into this open frame and the contact connecting screw 7 is actuated, the lower screw end presses on the fixed contact rail 45 corresponding to the contact rails 3, 4 and 5, so that the frame of the terminal 44 with the connecting lines so long is moved upwards until the connecting cables are tightened.
  • other screw connections with simple machine screws or solder connections or flat plug connections can also be used to fasten the connection lead lines are provided.
  • the contactor according to the invention can be easily converted to other practical applications, by replacing the contact system with one or more switching chamber bases for another contact system, the contact systems optionally being mechanical and / or can contain electronic components.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Description

Die Erfindung bezieht sich auf ein Schütz, insbesondere Leistungs- oder Hilfsschütz, mit einem in einem Gehäuse untergebrachten, von der Befestigungsebene abliegenden Kontaktsystem sowie einem das Kontaktsystem betätigenden und zwischen diesem und der Befestigungsebene angeordneten Magnetsystem, wobei das Gehäuse an dem von der Befestigungsebene abliegenden Ende durch einen Deckel abgeschlossen ist, der senkrecht zur Gehäusebefestigungsebene verlaufende und den Kontaktanschlußschrauben zugeordnete Führungen in Form von Löchern besitzt, wobei ferner das Kontaktsystem Kontaktschienen mit an zwei einander gegenüberliegenden Seiten des Gehäuses befindlichen Kontaktanschlußschrauben und mit feststehenden Kontaktstücken sowie gemeinsam betätigbare, als Öffner und/oder Schließer wirkende Brücken mit beweglichen Kontaktstücken aufweist, wobei außerdem die Kontaktanschlußschrauben in zwei parallel zur Befestigungsebene und mit Abstand voneinander verlaufenden Ebenen in Reihen und stufenweise derart angeordnet sind, daß ihr Abstand von der Schützmittelebene mit größer werdendem Abstand von der Befestigungsebene kleiner ist, und wobei schließlich die feststehenden Kontaktstücke der in den beiden Ebenen vorgesehenen Kontaktschienen je paarweise auf Senkrechten zur Gehäusebefestigungsebene in übereinander angeordneten Schaltkammern liegen.The invention relates to a contactor, in particular a power contactor or auxiliary contactor, with a contact system accommodated in a housing, remote from the mounting level, and a magnet system that actuates the contact system and is arranged between the mounting level and the mounting level, the housing at the end remote from the mounting level is closed by a cover, which runs perpendicular to the housing mounting plane and is assigned to the contact terminal screws in the form of holes, the contact system further comprising contact rails with contact terminals located on two opposite sides of the housing and with fixed contact pieces as well as jointly operable, as openers and / or Closer-acting bridges with movable contact pieces, wherein also the contact terminal screws in two parallel to the mounting plane and at a distance from each other in rows and in stages de are arranged so that their distance from the level of the protective means becomes smaller as the distance from the mounting level increases, and finally the fixed contact pieces of the contact rails provided in the two levels each lie in pairs on the perpendicular to the housing mounting level in switching chambers arranged one above the other.

Schütze der vorgenannten Gattung sind in der Praxis in verschiedenen Bauarten bekannt. Bei allen hat sich übereinstimmend ein wesentlicher Nachteil ergeben, der darin zu sehen ist, daß die Anschlußmöglichkeiten der Verdrahtung sehr umständlich sind. Schütze werden in der Praxis meist reihenweise dicht nebeneinander in Schaltschränken eingebaut, wobei die Befestigungsebenen, meist unter Zwischenschaltung von U-förmigen Befestigungsschienen vertikal verlaufen. Die Schütze sind in diesem Falle im allgemeinen in waagerechten Reihen dicht nebeneinander eingesetzt, so daß die Anschlußleitungen nach oben und nach unten verlaufen und in Kanälen zwischen den Schützenreihen zusammengeführt sind. Bei allen bisher bekannten Schützen der anfangs erläuterten Gattung liegen die Anschlüsse, insbesondere die Anschlußschrauben, für die Verdrahtung übereinander, d. h. in senkrechten Ebenen zur Befestigungsebene des Schaltschrankes, wenn die Kontaktanschlußschrauben in zwei oder mehr Ebenen im Schütz, die parallel zur Befestigungsebene verlaufen, vorgesehen sind. In der Praxis ist es somit unerläßlich, daß zunächst die Verdrahtung an den Kontaktanschlußschrauben vorgenommen wird, die sich in einer der Befestigungsebene nächstliegenden Ebene befinden. Erst danach kann man die Verdrahtung an den Kontaktanschlußschrauben in der oder den Ebenen vornehmen, die einen größeren Abstand von der Befestigungsebene des Schaltschrankes aufweisen.Contactors of the aforementioned type are known in practice in various types. With all of them there has been a significant disadvantage, which can be seen in the fact that the connection options for the wiring are very cumbersome. In practice, contactors are usually installed in rows close to each other in switch cabinets, with the mounting levels, usually with the interposition of U-shaped mounting rails, running vertically. In this case, the contactors are generally used close together in horizontal rows, so that the connecting lines run up and down and are brought together in channels between the rows of contactors. In all previously known contactors of the type initially explained, the connections, in particular the connection screws, are one above the other for the wiring, i. H. in vertical planes to the mounting level of the control cabinet if the contact connection screws are provided in two or more levels in the contactor that run parallel to the mounting level. In practice, it is therefore essential that the wiring is first carried out on the contact connection screws, which are located in a level closest to the mounting level. Only then can the wiring be made on the contact connection screws in the level or levels that are at a greater distance from the mounting level of the control cabinet.

Ein derart fabrikmäßig vorbereiteter und vollständig verdrahteter Schaltschrank ist auf dem Transport zum Einsatzort erheblichen Erschütterungen ausgesetzt, so daß es unerläßlich ist, daß sämtliche Kontaktanschlüsse nach Aufbau des Schaltschrankes auf festen Sitz und Kontaktsicherheit überprüft werden. Dies hat sich in der Praxis als außerordentlich umständlich erwiesen, da die Verdrahtung von den Kontaktanschlußschrauben der äußeren Ebene den Zugang zu den Kontaktanschlußschrauben der darunterliegenden inneren Ebene oder Ebenen erschwert. Man ist also bei besonders hohen Ansprüchen bezüglich der Kontaktsicherheit gezwungen, die Verdrahtung der äußeren Ebene zu lösen, um die darunterliegenden Kontaktanschlußschrauben nachziehen zu können.Such a factory-prepared and fully wired control cabinet is exposed to considerable vibrations during transport to the place of use, so that it is essential that all contact connections are checked for firm seating and contact security after the control cabinet has been set up. In practice, this has proven to be extremely cumbersome since the wiring from the contact connection screws of the outer level makes access to the contact connection screws of the underlying inner level or levels more difficult. In the case of particularly high demands with regard to contact reliability, one is therefore forced to undo the wiring of the outer level in order to be able to retighten the contact connection screws underneath.

Eine besondere Kosntruktion einer Schaltkammer mit in Durchbrüchen der Wände eingeführten Festkontaktteilen ist aus dem DE-GM 7 415 932 bekannt. Hierbei sind zwar die Kontaktanschlußschrauben in den beiden übereinander liegenden Ebenen stufenweise derart angeordnet, daß ihr Abstand von der Schützmittelebene mit größer werdendem Abstand von der Befestigungsebene kleiner wird, jedoch liegen alle Kontaktanschlußschrauben der übereinander liegenden Kontaktschienen in einer Querschnittsebene, in welcher auch die übereinander liegenden Kontaktschienen verlaufen. Wenn die Verdrahtungen an allen Kontaktanschlußschrauben vorgesehen sind, so überdecken die oberen Verdrahtungen die Kontaktanschlußschrauben mit ihren Verdrahtungen, die darunter liegen. Es ist auch hier wieder nicht möglich, beispielsweise mit einem Schraubenzieher von oben her, also senkrecht zur Befestigungsebene, an die unteren Kontaktanschlußschrauben heranzukommen, ohne vorher die oberen Verdrahtungen zu entfernen.A special construction of a switching chamber with fixed contact parts inserted into openings in the walls is known from DE-GM 7 415 932. Here, the contact connection screws in the two superimposed levels are arranged in such a way that their distance from the protective agent level becomes smaller as the distance from the mounting level increases, but all contact connection screws of the superimposed contact rails lie in a cross-sectional plane in which the contact rails lying one above the other are located run. If the wirings are provided on all contact connection screws, the upper wirings cover the contact connection screws with their wirings which lie below. Again, it is not possible, for example with a screwdriver, to get to the lower contact connection screws from above, ie perpendicular to the mounting plane, without first removing the upper wiring.

Des weiteren ist aus der FR-PS 1 301 590 ein elektromagnetisches Schaltgerät bekannt, welches im wesentlichen aus einem Unterteil und einem Oberteil besteht, die zusammensteckbar sind. Das nach der Befestigungsebene zu liegende Unterteil weist an zwei einander gegenüberliegenden Seiten mit Abstand voneinander Kontaktanschlußschrauben mit Kontaktschienen auf, die ihrerseits Festkontaktstücke tragen und mit elektromagnetisch betätigten beweglichen Kontaktstücken zusammenarbeiten. Auf Lücke mit diesen Kontaktanschlußschrauben sind in einer tiefer gelegenen Ebene weitere Anschlußschrauben vorgesehen, die mit Steckkontakten verbunden sind. Nach Zusammenbau des gesamten Gerätes sind aber alle diese vorgenannten Kontaktanschlußschrauben von weiteren entsprechenden Kontaktanschlußschrauben am Oberteil überdeckt, welches außer dem Magnetsystem noch weitere Kontakte enthält. Diese Kontaktanschlußschrauben des Oberteiles liegen aber in gleichen senkrechten Ebenen zu der Befestigungsebene mit den unteren Kontaktanschlußschrauben. Auch bei diesem Gerät sind also die Kontaktanschlußschrauben des Unterteiles bei vollständig vorgesehener Verdrahtung nicht mehr frei zugänglich, weil sie von der Verdrahtung am Oberteil überdeckt sind.Furthermore, an electromagnetic switching device is known from FR-PS 1 301 590, which essentially consists of a lower part and an upper part, which can be plugged together. The lower part to be located on the fastening plane has, on two opposite sides at a distance from each other, contact connection screws with contact rails, which in turn carry fixed contact pieces and cooperate with electromagnetically actuated movable contact pieces. If there is a gap with these contact connection screws, further connection screws are provided in a lower level, which are connected to plug contacts. After assembly of the entire device, however, all of the aforementioned contact connection screws are from further corresponding contact connection covered screws on the upper part, which contains other contacts in addition to the magnet system. However, these contact connection screws of the upper part lie in the same perpendicular planes to the fastening plane with the lower contact connection screws. In this device, too, the contact connection screws of the lower part are no longer freely accessible when the wiring is completely provided, because they are covered by the wiring on the upper part.

Weiterhin ist aus der FR-PS 1 291 800 eine elektrische Schaltvorrichtung bekannt, wobei zur Verbindung zwischen Vorrichtungsteilen flexible, unterschiedlich weit seitlich gekröpfte stromleitende Verbindungen vorgesehen sind. Diese seitlich gekröpften flexiblen Verbindungen mitsamt ihren beiderseitigen Befestigungsschrauben befinden sich bei fertig montierter Vorrichtung unter einem geschlossenen Gerätedeckel, so daß die Verbindungsschrauben überhaupt nicht zugänglich sind. Hierfür besteht auch kein Bedarf, bei diesen elektrischen Verbindungen handelt es sich nicht um Kontaktschienen mit Kontaktanschlußschrauben für eine nach außen führende Verdrahtung, sondern lediglich um Zwischenverbindungen innerhalb der Vorrichtung. Die unterschiedlich gekröpfte Gestaltung dieser elektrischen Verbindungen hat auch nichts mit der Zugänglichkeit der Verbindungsschrauben zu tun, sondern beruht auf zufälligen Anordnungsgegebenheiten innerhalb der Vorrichtung.Furthermore, from FR-PS 1 291 800 an electrical switching device is known, wherein flexible, differently laterally cranked current-conducting connections are provided for the connection between device parts. These laterally cranked flexible connections together with their fastening screws on both sides are located under a closed device cover when the device is fully assembled, so that the connecting screws are not accessible at all. There is also no need for this, these electrical connections are not contact rails with contact connection screws for wiring leading to the outside, but only intermediate connections within the device. The differently offset design of these electrical connections also has nothing to do with the accessibility of the connecting screws, but is based on random arrangement conditions within the device.

Schließlich ist aus der BE-A-568 998 ein elektrisches Schaltgerät bekannt, bei welchem das Kontaktsystem zu beiden Seiten des Magnetsystems angeordnet ist, so daß die Drahtanschlüsse der Spule des Magnetsystems seitlich zu Kontaktanschlüssen des Kontaktsystems geführt sind. Aber auch bei dieser bekannten Vorrichtung sind wieder sämtliche Kontaktanschlußschrauben des zu beiden Seiten des Magnetsystems befindlichen Kontaktsystems in gleichen Ebenen senkrecht zur Befestigungsebene angeordnet, so daß die unteren Kontaktanschlußschrauben bei vorgesehener Verdrahtung nicht zugänglich sind. Dies gilt auch für die Anschlußschrauben für die Spulenanschlüsse.Finally, from BE-A-568 998 an electrical switching device is known in which the contact system is arranged on both sides of the magnet system, so that the wire connections of the coil of the magnet system are guided laterally to contact connections of the contact system. But also in this known device again all contact connection screws of the contact system located on both sides of the magnet system are arranged in the same planes perpendicular to the mounting plane, so that the lower contact connection screws are not accessible when the wiring is provided. This also applies to the connection screws for the coil connections.

Demgegenüber liegt der vorliegenden Erfindung die Aufgabe zugrunde, ein Schütz zu schaffen, bei welchem eine einfache Handhabung der Anschlußmöglichkeiten der Verdrahtung gegeben ist und bei welchem wahlweise die Verdrahtung an den oberen und an den unteren Kontaktanschlußschrauben oder umgekehrt vorgenommen bzw. die Kontaktanschlußschrauben nachgezogen werden können, ohne daß die in der Praxis vorgegebene und je nach Anzahl der Pole beschränkte Breite des Schützes vergrößert zu werden braucht.In contrast, the present invention has for its object to provide a contactor in which there is a simple handling of the connection options of the wiring and in which the wiring can optionally be carried out on the upper and on the lower contact connection screws or vice versa or the contact connection screws can be tightened, without the width of the contactor specified in practice and limited depending on the number of poles need to be increased.

Die gestellte Aufgabe wird erfindungsgemäß dadurch gelöst, daß die langen, nach der Befestigungsebene zu liegenden Kontaktschienen innerhalb ihrer Ebenen mit einem schräg verlaufenden Schienenteil derart seitlich gekröpft sind, daß sich ihre Kontaktanschlußschrauben in Mittelebenen zwischen den von der Befestigungsebene ab liegenden Kontaktanschlußschrauben befinden, und daß die Kontaktanschlußschrauben für die Spule des Magnetsystems im Bereich der Ebene der nach der Gehäusebefestigungsebene zu liegenden Kontaktschienen, ebenfalls seitlich versetzt zu den Kontaktanschlußschrauben der anderen Ebene angeordnet sind, so daß alle Kontaktanschlußschrauben bei vorgesehener Verdrahtung frei zugänglich sind.The object is achieved according to the invention in that the long contact rails to be located according to the fastening plane are cranked laterally within their planes with an obliquely running rail part in such a way that their contact connecting screws are located in the middle plane between the contact connecting screws lying away from the fastening plane, and that Contact connection screws for the coil of the magnet system are also arranged laterally offset from the contact connection screws of the other level in the area of the level of the contact rails to be located after the housing mounting level, so that all contact connection screws are freely accessible when the wiring is provided.

Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Advantageous embodiments of the invention result from the subclaims.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung im Schema dargestellt, und zwar zeigt

  • Figur 1 einen Längsschnitt durch ein in bezug auf die Anzahl der Pole veränderliches Schütz,
  • Figur 2 einen Schnitt hierzu gemäß Schnittlinie 11-11,
  • Figur 3 eine Draufsicht auf ein Schütz mit Darstellung der Lage der Verdrahtung und
  • Figuren 4 bis 7 konstruktive Einzelheiten.
In the drawing, an embodiment of the invention is shown in the diagram, namely shows
  • 1 shows a longitudinal section through a contactor which is variable with respect to the number of poles,
  • FIG. 2 shows a section in accordance with section line 11-11,
  • Figure 3 is a plan view of a contactor showing the location of the wiring and
  • Figures 4 to 7 construction details.

Die Erfindung wird bevorzugt bei Leistungsschützen bis zu 7,5 kW sowie bei Hilfsschützen bis 20 A Dauerstrom angewendet, und zwar wahlweise für vier und acht Kontakte. Das Schütz weist ein Gehäuse aus Kunststoff auf, in welchem ein Kontaktsystem sowie ein das Kontaktsystem betätigendes Magnetsystem untergebracht sind, wobei das Gehäuse an dem von der Befestigungsseite 1 abliegenden Ende durch einen Deckel 2 abgeschlossen ist, wobei das Kontaktsystem Kontaktschienen 3, 4 und 5 mit Kontaktanschlußschrauben 6, 7 und 8 und mit feststehenden Kontaktstücken 9, 10 und 11 aufweist. Ferner gehören zum Kontaktsystem bewegliche Kontaktstücke 12, 13, 14 und 15, die auf jeweils nur zur Hälfte in Figur 1 gezeichneten Brücken 16, 17, 18 und 19 sitzen, wobei diese Brücken in an sich bekannter Weise in einem gemeinsamen Brückenträger 20 eingesetzt sind, und zwar unter Zwischenschaltung von Federn 21 in entsprechenden Ausnehmungerr. Die Kontaktbrücken können dabei so eingesetzt werden, daß sie entweder als Öffner oder Schließer wirken. Das Gehäuse, welches das vorerläuterte Kontaktsystem umschließt, ist in parallel zur Gehäusebefestigungsebene verlaüfende Ebenen geteilt, und zwar besteht dieses Gehäuse aus einem unteren Gehäuseteil 22, einem darüber angeordneten Gehäuseteil 23 und dem Deckel 2 oder, bei Zwischenschaltung eines Schaltkammersockels, aus einem weiteren Gehäuseteil 24. Das Schütz gemäß Figur 1 läßt sich also mit wenigen Handgriffen von einem vierpoligen Schütz in ein achtpoliges oder umgekehrt umwandeln. Das untere Gehäuseteil 22 mit Fußteil 25 umschließt größtenteils das Magnetsystem, und zwar einmal den eingesetzten Kern 26 mit Kurzschlußringen 27 und Spule 28 sowie den vertikal beweglichen Anker 29, der aber nach Abnahme der Gehäuseteile 23, 24 so weit in unterster Stellung nach oben herausragt, daß man ihn leicht abheben und auch die übrigen Teile des Magnetsystems aus dem Gehäuse herausnehmen kann. Der Anker 29 ist mit dem Brückenhalter 20 in geeigneter Weise zur gemeinsamen Betätigung der Kontakte verbunden.The invention is preferably used for power contactors up to 7.5 kW and for auxiliary contactors up to 20 A continuous current, optionally for four and eight contacts. The contactor has a housing made of plastic, in which a contact system and a magnet system actuating the contact system are accommodated, the housing being closed off at the end remote from the fastening side 1 by a cover 2, the contact system comprising contact rails 3, 4 and 5 Contact terminal screws 6, 7 and 8 and with fixed contact pieces 9, 10 and 11. The contact system also includes movable contact pieces 12, 13, 14 and 15, which are each seated on only half of the bridges 16, 17, 18 and 19 shown in FIG. 1, these bridges being used in a manner known per se in a common bridge support 20, with the interposition of springs 21 in corresponding recesses. The contact bridges can be used so that they act either as openers or closers. The housing, which encloses the previously explained contact system, is divided into planes running parallel to the housing mounting plane, namely this housing consists of a lower housing part 22, a housing part 23 arranged above it and the cover 2 or, if a switching chamber base is interposed, a further housing part 24 The contactor according to FIG. 1 can thus be converted from a four-pole contactor into an eight-pole or vice versa in a few simple steps. The lower housing part 22 with foot part 25 largely encloses the magnet system, namely once the core 26 with short-circuit rings 27 and coil 28 and the vertically movable armature 29, which, however, after removal of the housing parts 23, 24 so protrudes far in the lowest position so that it can be easily lifted off and the other parts of the magnet system can be removed from the housing. The armature 29 is connected to the bridge holder 20 in a suitable manner for the joint actuation of the contacts.

Um den Schlag des Ankers 29 auf den Kern 26 gegenüber der Befestigunswand des nicht gezeichneten Schaltschrankes aufzufangen, ist eine Gummiplatte 30 zwischen Kern 26 und einer Befestigungsplatte 31 vorgesehen. Am linken Ende der Befestigungsplatte 31 ist, gemäß Figur 1, ein in Richtung der eingezeichneten Pfeile bewegbarer Schieber 32 vorgesehen, der in rechter Stellung mit seiner Nase 32a hinter den Rand einer U-förmigen Befestigungsschiene 33 des Schaltschrankes greift, während die gegenüberliegende Kante 33a der U-profilierten Schiene zum Einsetzen hinter ein ausgeklinktes Teil 31a der Befestigungsschiene 31 geschoben werden kann. Ein quer verlaufender leistenartiger Vorsprung 30a der Gummiplatte 30 drückt von oben gegen die Kante des U-Profiles und verhindert das seitliche Verschieben des Schützes auf dem Profil. Die Befestigung der vorbeschriebenen Gehäuseteile untereinander erfolgt mittels nicht gezeichneter Schrauben. Insbesondere die Figuren 2 und 3 in Verbindung mit dem rechten Teil der Figur 1 veranschaulichen, daß die Kontaktschienen 4, 5 mit ihren Kontaktanschlußschrauben 7, 8 in Ebenen mit unterschiedlichem Abstand von dem der Befestigung dienenden Gehäuseende 1 derart versetzt zueinander angeordnet sind, daß jede Kontaktanschlußschraube 7, 8 bei vorgesehener Verdrahtung 34 frei zugänglich ist. Vorzugsweise sind die Kontaktschienen in zwei mit Abstand voneinander verlaufenden Ebenen angeordnet, wobei die Kontaktschienen 5 der deckelseitigen Ebene kürzer als die Kontaktschienen 4 der anderen Ebene gewählt sind. Die Kontaktschienen 3 und 4 sind innerhalb ihrer Ebenen derart geformt, daß die feststehenden Kontaktstücke 9, 10 bzw. 11 der in den beiden Ebenen vorgesehenen Kontaktschienen je paarweise auf Senkrechten zur Gehäusebefestigungsebene 1 liegen. Vorteilhafterweise sind dabei die Kontaktschienen mindestens einer Ebene, nach dem Ausführungsbeispiel gemäß Figur 2 die langen Kontaktschienen 3, 4, mit einem schrägverlaufenden Teil 3a bzw. 4a versehen.In order to absorb the blow of the armature 29 on the core 26 opposite the fastening wall of the control cabinet, not shown, a rubber plate 30 is provided between the core 26 and a fastening plate 31. At the left end of the mounting plate 31, according to Figure 1, a movable in the direction of the arrows shown slide 32 is provided, which in the right position with its nose 32a engages behind the edge of a U-shaped mounting rail 33 of the control cabinet, while the opposite edge 33a U-shaped rail for insertion can be pushed behind a notched part 31a of the fastening rail 31. A transverse strip-like projection 30a of the rubber plate 30 presses against the edge of the U-profile from above and prevents the contactor from moving laterally on the profile. The above-described housing parts are fastened to one another by means of screws, not shown. In particular, FIGS. 2 and 3 in connection with the right part of FIG. 1 illustrate that the contact rails 4, 5 with their contact connection screws 7, 8 are arranged in planes offset from one another in planes at different distances from the housing end 1 used for fastening such that each contact connection screw 7, 8 is freely accessible when the wiring 34 is provided. The contact rails are preferably arranged in two planes spaced apart from one another, the contact rails 5 of the cover-side plane being chosen to be shorter than the contact rails 4 of the other plane. The contact rails 3 and 4 are shaped within their planes such that the fixed contact pieces 9, 10 and 11 of the contact rails provided in the two planes each lie in pairs on the perpendicular to the housing mounting plane 1. Advantageously, the contact rails of at least one level, in the exemplary embodiment according to FIG. 2 the long contact rails 3, 4, are provided with an inclined part 3a or 4a.

Beim Ausführungsbeispiel gemäß Figur 1 bis 3 ist das Schütz achtpolig gewählt. Aus den Figuren 2 und 3 ersieht man zwei weitere Kontaktanschlußschrauben 35 und 36. Es handelt sich hierbei um die Kontaktanschlußschrauben für die Spule 28 des Magnetsystems, und zwar sind diese Kontaktanschlußschrauben im Bereich der Ebene der Kontaktschienen 3, 4 bzw. deren Kontaktanschlußschrauben 6, 7 angeordnet. Um eine stromleitende Verbindung zwischen der Spule 28 einerseits und diesen Kontaktanschlußschrauben 35, 36 andererseits herzustellen, sind an der Teilungsebene 37 (Figur 1) zwischen dem Gehäuseteil 22 des Magnetsystems und den Gehäuseteil 23 des Kontaktsystems nicht gezeichnete Federkontakte vorgesehen, die im wesentlichen aus zwei Teilen bestehen, einem Teil an der Unterseite des Gehäuseteiles 23 und einem anderen Teil an der Oberseite des Gehäuseteils 22. Wenn man diese beiden Gehäuseteile durch Schrauben miteinander verbindet, stützen sich die beiden Federkontakte aufeinander ab und geben eine stromleitende Verbindung. Es versteht sich, daß an diese beiderseitigen Federkontakte elektrische Leitungen angeschlossen sind, die in den Gehäuseteilen einerseits zur Spule und andererseits zu den Kontaktanschlußschrauben 35, 36 geführt sind.In the exemplary embodiment according to FIGS. 1 to 3, the contactor is selected with eight poles. FIGS. 2 and 3 show two further contact connection screws 35 and 36. These are the contact connection screws for the coil 28 of the magnet system, namely these contact connection screws in the area of the level of the contact rails 3, 4 or their contact connection screws 6, 7 arranged. In order to establish a current-conducting connection between the coil 28 on the one hand and these contact connection screws 35, 36 on the other hand, spring contacts, not shown, are provided on the division plane 37 (FIG. 1) between the housing part 22 of the magnet system and the housing part 23 of the contact system, which essentially consist of two parts exist, a part on the underside of the housing part 23 and another part on the top of the housing part 22. If these two housing parts are connected by screws, the two spring contacts are supported on one another and give a current-conducting connection. It goes without saying that electrical lines are connected to these spring contacts on both sides, which are guided in the housing parts on the one hand to the coil and on the other hand to the contact connection screws 35, 36.

Die Kontaktschienen 3, 4 und 5, die durch Trennwände 38 zur Betriebssicherheit voneinander getrennt sind, sind in offenen Nuten 39, gemäß Figur 4 und 5, entsprechender Gehäusewandungsteile durch Klemmwirkung befestigt. Außerdem werden sie durch Aufsatz des das Kontaktsystem enthaltenden, wie beschrieben als Schaltkammersockel dienenden Gehäuseteiles 24 bzw. des Deckels 2 gehalten. Zur Vergrößerung der Klemmwirkung ist vorteilhaft in jeder Nute ein Nockenvorsprung 40 und in jeder Kontaktschiene eine entsprechende Öffnung 41 oder in einer anderen Gestalt 41a vorgesehen (Figur 6).The contact rails 3, 4 and 5, which are separated from one another by partitions 38 for operational safety, are fastened in open grooves 39, according to FIGS. 4 and 5, by corresponding housing wall parts by clamping action. In addition, they are held by attaching the housing part 24 or the cover 2 containing the contact system, as described as a switching chamber base, or the cover 2. To increase the clamping effect, a cam projection 40 is advantageously provided in each groove and a corresponding opening 41 or in another shape 41a is provided in each contact rail (FIG. 6).

Von besonderer Bedeutung ist, daß im Schaltkammersockel 24 und im Deckel 2 senkrecht zur Gehäusebefestigungsebene 1 verlaufende und den Kontaktanschlußschrauben 6, 7, 8 zugeordnete Führungen 2a, 24a für den Einsatz eines Schraubenzieherschaftes vorgesehen sind. Zweckmäßigerweise sind diese Führungen als zylindrische Löcher ausgebildet, wobei der Durchmesser der Löcher kleiner als der Schraubenkopf 6a, 7a, 8a der Kontaktanschlußschrauben gewählt ist.It is of particular importance that guides 2a, 24a are provided in the switching chamber base 24 and in the cover 2, which run perpendicular to the housing mounting plane 1 and are assigned to the contact connection screws 6, 7, 8, for the use of a screwdriver shaft. These guides are expediently designed as cylindrical holes, the diameter of the holes being chosen to be smaller than the screw head 6a, 7a, 8a of the contact connection screws.

Die Kontaktanschlußschrauben 6, 7, 8 und 35, 36 wirken jeweils mit nach zwei einander gegenüberliegenden Seitenflächen 42, 43 des Schaltkammersockels 24 öffnenden Klemmen 44 (Figur 7) zusammen, so daß die Anschlußleitungen 34 wahlweise einfach oder mehrfach eingeführt werden können. Zweckmäßigerweise sind die Klemmen mit selbstöffnenden Klemmscheiben versehen. Bei dem Ausführungsbeispiel gemäß Figur 7 weist die Klemme 44 einen im wesentlichen rechteckigen Rahmen auf. Wenn in diesen offenen Rahmen die Enden der Anschlußleitungen 34 eingeführt sind und die Kontaktanschlußschraube 7 betätigt wird, so drückt das untere Schraubenende auf die feststehende Kontaktschiene 45 entsprechend den Kontaktschienen 3, 4 und 5, so daß der Rahmen der Klemme 44 mit den Anschlußleitungen so lange nach oben hin bewegt wird, bis die Anschlußleitungen festgespannt sitzen. Statt der vorerläuterten Klemmen können auch andere Schraubenanschlüsse mit einfachen Maschinenschrauben oder Lötanschlüsse oder Flachsteckanschlüsse für die Befestigung der Anschlußleitungen vorgesehen sein.The contact connection screws 6, 7, 8 and 35, 36 each cooperate with terminals 44 (FIG. 7) that open after two opposite side surfaces 42, 43 of the switching chamber base 24, so that the connecting lines 34 can be inserted one or more times. The terminals are expediently provided with self-opening clamping disks. In the exemplary embodiment according to FIG. 7, the clamp 44 has an essentially rectangular frame. When the ends of the connecting lines 34 are inserted into this open frame and the contact connecting screw 7 is actuated, the lower screw end presses on the fixed contact rail 45 corresponding to the contact rails 3, 4 and 5, so that the frame of the terminal 44 with the connecting lines so long is moved upwards until the connecting cables are tightened. Instead of the previously explained terminals, other screw connections with simple machine screws or solder connections or flat plug connections can also be used to fasten the connection lead lines are provided.

Wie aus der vorhergehenden Beschreibung sowie der Zeichnung deutlich wird, läßt sich das erfindungsgemäße Schütz in einfacher Weise auf andere Anwendungsfälle der Praxis umstellen, und zwar durch Auswechseln des Kontaktsystems mit einem oder mehreren Schaltkammersockeln gegen ein anderes Kontaktsystem, wobei die Kontaktsysteme wahlweise mechahische und/oder elektronische Bauelemente enthalten können.As is clear from the preceding description and the drawing, the contactor according to the invention can be easily converted to other practical applications, by replacing the contact system with one or more switching chamber bases for another contact system, the contact systems optionally being mechanical and / or can contain electronic components.

Claims (4)

1. A relay, more especially a power or control relay, comprising a contact system, which is accommodated in a housing and is remote from the fastening plane (1), as well as a magnet system (26, 28, 29), which actuates the contact system and is provided between the latter and the fastening plane (1), and wherein the housing is sealed by a cover (2) at the end that is remote from the fastening plane (1), which cover comprises guides (2a, 24a) in the form of holes, which extend vertically to the housing fastening plane (1) and are associated with the contact connecting screws (7, 8), and wherein furthermore the contact system comprises contact bars (3, 4, 5), which are provided with contact connecting screws (6, 7, 8) on two opposite sides of the housing and with stationary contact members (9, 10, 11), as well as jointly actuatable bridges (16, 17, 18, 19) which act as break contacts and/or make contacts and are provided with movable contact members (12, 13, 14, 15), and wherein furthermore the contact connecting screws (6, 7, 8) are arranged in two planes, which are parallel to the fastening plane (1) and at a distance from each other, in rows and in steps in such a way that their distance from the relay central plane is smaller as the distance from the fastening plane increases, and wherein finally the stationary contact members (8, 10, 11) of the contact bars (3, 4, 5) provided in the two planes lie in pairs, on lines that are perpendicular to the housing fastening plane, in superimposed quenching chambers, characterised in that the long contact bars (3, 4), which are located in the direction of the fastening plane, are laterally offset, with an obliquely extending bar protion (3a, 4a), within their planes in such a way that their contact connecting screws (6, 7) are located in central planes between the contact connecting screws (8) which are remote from the fastening plane, and in that the contact connecting screws (35, 36) for the coil of the magnet system in the zone of the plane of the contact bars (3, 4) lying in the direction of the housing fastening plane are also arranged so as to be laterally offset relative to the contact connecting screws of the other plane, so that all the contact connecting screws are freely accessible when wiring is provided.
2. A relay as claimed in Claim 1, characterised in that the housing is divided in known »per se« manner into planes which extend parallel to the housing fastening plane so that the magnet system is surrounded by a housing portion and the contact system is surrounded by at least another housing portion, and in that spring contacts for a current conduction connection between the coil and the contact connecting screws (35, 36) are provided on the plane of division (37) between the housing part of the magnet system and that of the contact system.
3. A relay as claimed in Claim 2, characterised in that the contact bars (3, 4, 5) are fastened by clamping action in open grooves in the housing wall and are held by the superimposition of the housing part containing the contact system and serving as a quenching chamber base or of the cover, and in that for the purpose of increasing the clamping action there are provided a cam projection (40) in every groove (39) and a corresponding opening (41) in every contact bar (45).
4. A relay as c)a)'ped in one of the preceding Claims, characterised in that the contact connecting screws (7) cooperate with clamps (44), which open in the direction of two opposite side surfaces of the quenching chamber base, for introducing the one-pole or two-pole connecting lines (34), and in that the clamps comprise self-opening clamping discs.
EP78100433A 1977-07-21 1978-07-19 Contactor with readily accessible wire connecting terminals disposed at different levels Expired EP0000711B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2732963 1977-07-21
DE2732963A DE2732963C2 (en) 1977-07-21 1977-07-21 Contactor

Publications (2)

Publication Number Publication Date
EP0000711A1 EP0000711A1 (en) 1979-02-21
EP0000711B1 true EP0000711B1 (en) 1982-04-21

Family

ID=6014515

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78100433A Expired EP0000711B1 (en) 1977-07-21 1978-07-19 Contactor with readily accessible wire connecting terminals disposed at different levels

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US (1) US4229719A (en)
EP (1) EP0000711B1 (en)
AU (1) AU521058B2 (en)
BR (1) BR7804691A (en)
CA (1) CA1105533A (en)
DE (1) DE2732963C2 (en)
IT (1) IT1097520B (en)
MX (1) MX145279A (en)

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Also Published As

Publication number Publication date
US4229719A (en) 1980-10-21
IT7825771A0 (en) 1978-07-17
BR7804691A (en) 1979-04-17
EP0000711A1 (en) 1979-02-21
CA1105533A (en) 1981-07-21
DE2732963A1 (en) 1979-05-03
IT1097520B (en) 1985-08-31
AU521058B2 (en) 1982-03-11
AU3823778A (en) 1980-01-24
MX145279A (en) 1982-01-20
DE2732963C2 (en) 1982-10-21

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