EP0403666B1 - Electrically shielded in-line terminal assembly - Google Patents

Electrically shielded in-line terminal assembly Download PDF

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Publication number
EP0403666B1
EP0403666B1 EP89109368A EP89109368A EP0403666B1 EP 0403666 B1 EP0403666 B1 EP 0403666B1 EP 89109368 A EP89109368 A EP 89109368A EP 89109368 A EP89109368 A EP 89109368A EP 0403666 B1 EP0403666 B1 EP 0403666B1
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EP
European Patent Office
Prior art keywords
terminal
terminal housing
housing
metallised
closure plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP89109368A
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German (de)
French (fr)
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EP0403666A1 (en
Inventor
Arian Frikkee
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Weidmueller Interface GmbH and Co KG
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Weidmueller Interface GmbH and Co KG
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Publication date
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Priority to EP89109368A priority Critical patent/EP0403666B1/en
Priority to DE58907521T priority patent/DE58907521D1/en
Publication of EP0403666A1 publication Critical patent/EP0403666A1/en
Application granted granted Critical
Publication of EP0403666B1 publication Critical patent/EP0403666B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting
    • H01R9/2691—Clip-on terminal blocks for side-by-side rail- or strip-mounting with ground wire connection to the rail

Definitions

  • the invention relates to an electrically shielded terminal block arrangement with terminal blocks which have a housing made of electrically insulating plastic, in the narrow sides of which access openings are provided for actuating internal conductor connections and for inserting the conductors to be connected, and with connections to a ground or ground potential, according to the preamble of Claim 1 (e.g. EP-A-0 191 943).
  • the present invention is therefore based on the object to provide an electrically shielded terminal block arrangement which can be reliably shielded from interference fields with little structural effort and taking into account the necessary creepage and clearance distances.
  • the solution according to the invention is that the terminal blocks of the arrangement are closed on their mounting side by an end plate made of electrically insulating plastic and the outer side surfaces of the terminal housings and their narrow outer top, back and front sides are merging and leaving each other leaving the inner surfaces of the access openings below are metallized at least up to and including a connection zone in the foot area of the terminal housing outside the terminal interior for connection to earth and ground potential and the end plates on all outer surfaces and in contact surface sections to the respective terminal housing, and the terminal housing in the corresponding contact surface sections are metallized to the end plate in the adjacent narrow sides.
  • the terminal block shown in the figures has a terminal housing 1 made of electrically insulating plastic, connections 2 being arranged in the interior of the terminal in the usual way, with which an incoming and an outgoing electrical conductor are connected to an electrically conductive busbar 3 connecting the connections 2 can.
  • connections 2 being arranged in the interior of the terminal in the usual way, with which an incoming and an outgoing electrical conductor are connected to an electrically conductive busbar 3 connecting the connections 2 can.
  • access openings 6 are provided in the usual manner for inserting the conductors to be connected.
  • access openings 8 are provided for a screwdriver in order to be able to reach the terminal screws assigned to the conductor connections 2 for making the conductor connection.
  • the interior of the terminal housing 1 is open on one side, the so-called mounting side, so that from this side the conductor connections 2, the busbar 3 and, if appropriate, are problem-free further electrical and electronic components can be introduced.
  • each terminal block in the terminal block arrangement according to the invention is assigned an end plate 10 made of electrically insulating material.
  • the end plate 10 is provided with locking pins 11 which can be locked in locking holes 12 in the terminal housing 1.
  • the terminal housing 1 and the end plate 10 are now metallized in special outer surface areas, which are described in detail below.
  • the metallization is illustrated in the figures of the drawing by dotting all the metallized surfaces concerned.
  • the terminal housing 1 is first completely metallized on its closed large side surface 13 opposite the assembly opening.
  • the narrow front surface 4 and the narrow rear surface 5 are also metallized, but with regard to the air and creepage distances, leaving out the inner walls of the access openings 6 for the incoming and outgoing conductors, which are therefore not metallized.
  • the narrow upper side 7 of the terminal housing 1 is also metallized, but this with the recess of the inner walls of the access openings 8 for the screwdriver, that is, the inner walls that lead to the clamping screws of the conductor connections 2. All of the surfaces mentioned are merged into one another, that is to say also in each case going vertically, so that all of the surfaces mentioned are always at the same potential.
  • the metallization expediently includes all the outer surfaces of the foot area, in particular, therefore, all conceivable surfaces of the latching foot 14, including the receiving space for a latching spring 15.
  • Such conventional latching springs 15 serve to latch the terminal block on the mounting rail 9.
  • the latching springs 15 consist of Metal. If, in such a case, a fast spring 15 is used as the latching element and the support rail 9 is at earth or ground potential, the locking of the terminal block on the support rail automatically leads to the desired connection of all shielding surfaces of the terminal housing 1 in a very simple manner the ground potential via the detent spring 15.
  • a receiving channel 16 in the lower foot region of the terminal housing 1, but at a distance from the interior of the terminal housing, the inner wall of which is also completely metallized, and also going over to the metallized front side 4 and the metallized rear side 5 of the terminal housing.
  • This offers a further very expedient possibility of simply connecting the electrically shielding surfaces to a ground or ground potential, in the event that one of the conductors to be connected is a so-called coaxial conductor 17 is at its ground or ground potential via a small connector a shield rail 18 to be inserted into the receiving channel 16 can be easily connected from electrically conductive material.
  • the lateral end plate 10 assigned to each terminal block of the relevant terminal block arrangement for closing the assembly opening is metallized on all outer side surfaces.
  • the outer large side surface and all the narrow side surfaces are all metallized.
  • common contact surfaces between the shielding plate 10 and the affected side wall of the terminal housing 1 created, both of which are also metallized and thus automatically effect the potential synchronization when mounting the end plate 10.
  • the inner walls of the locking holes 12 in the terminal housing 1 are metallized in the exemplary embodiment shown, and starting from them, in an electrically conductive transition to this, narrower outwardly leading metallized connecting strips 19, which are also electrically conductive in the metallization of the pass over the narrow front 4 and the narrow rear 5.
  • the two locking pins 11 are metallized on the shielding plate 10 and, starting from them and in electrical connection therewith, narrow metallization strips 20 in a corresponding position to the metallization strips 19, the connection strips 20 also in turn transitioning in a metallically conductive manner into the adjacent narrow sides of the shielding plate 10 .
  • the lower end of the shielding plate 10 after it has been mounted on the terminal housing 1 is illustrated in FIG. 1 by a dash-dotted line.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Description

Die Erfindung betrifft eine elektrisch abgeschirmte Reihenklemmenanordnung mit Reihenklemmen, die ein Gehäuse aus elektrisch isolierendem Kunststoff haben, in dessen Schmalseiten jeweils Zugangsöffnungen zur Betätigung innen liegender Leiteranschlüsse und zum Einstecken der anzuschließenden Leiter vorgesehen sind und mit Anschlüssen an ein Erd- oder Massepotential, gemäß Oberbegriff von Anspruch 1 (z.B. EP-A-0 191 943).The invention relates to an electrically shielded terminal block arrangement with terminal blocks which have a housing made of electrically insulating plastic, in the narrow sides of which access openings are provided for actuating internal conductor connections and for inserting the conductors to be connected, and with connections to a ground or ground potential, according to the preamble of Claim 1 (e.g. EP-A-0 191 943).

Es ist bei elektrischen und elektronischen Geräten und Bauteilen bekannt, aus Gründen einer Abschirmung gegenüber Störfeldern ein Gehäuse aus Metall (DE-C- 32 28 398) oder eine äußere Belegung mit einem metallisierten textilen Flächengebilde (DE-A- 36 31 696) durchzuführen, doch scheidet, abgesehen von Kostengründen, diese Vorgehensweise bei Reihenklemmen schon allein deswegen aus, weil bei derartigen Reihenklemmen in deren Innenraum mit Leiteranschlüssen und Stromschienen in sehr geringem Abstand zum umgebenden Gehäuse elektrisch leitende Teile liegen, für die Kriech- und Luftstrecken ausreichender Größe zu benachbarten Klemmen, Tragschienen und sonstigen Potentialen einzuhalten sind.It is known in electrical and electronic devices and components to carry out a housing made of metal (DE-C-32 28 398) or an external covering with a metallized textile fabric (DE-A-36 31 696) for reasons of shielding against interference fields, However, apart from cost reasons, this procedure is not applicable to terminal blocks if only because such terminal blocks have electrically conductive parts in their interior with conductor connections and busbars at a very short distance from the surrounding housing, for the creepage and clearance distances of sufficient size to neighboring terminals , Mounting rails and other potentials must be observed.

Es ist von daher vorgeschlagen worden (Zeitschrift "Der Elektriker/Der Energieelektroniker" 10/88 Seite 329), die auftretenden Störsignale dadurch zu eliminieren, daß man auf den Tragschienen jeweils neben einer normalen Durchgangs-Reihenklemme eine reine Schutzleiter-Reihenklemme, dort Schirmleiterklemme genannt, mit bekanntlich leitender Verbindung zur geerdeten Tragschiene anordnet. Dies ist konstruktiv und platzmäßig sehr aufwendig, da ja immer eine Zusatzklemme erforderlich wird. Die Abschirmung ist auch nicht völlig sicher, da ja die Stirn- und Seitenflächen der Durchgangs-Reihenklemmen bei dieser Vorgehensweise nicht in die Abschirmmaßnahme mit einbezogen sind.It has therefore been proposed (magazine "Der Elektriker / Der Energieelektroniker" 10/88 page 329) to eliminate the interference signals that occur by placing a pure protective conductor terminal block, called a shield conductor terminal, on the mounting rails in addition to a normal feed-through terminal block , with a known conductive connection to the earthed mounting rail. This is constructive and space-consuming, since an additional terminal is always required. The shielding is also not completely safe, since the front and side surfaces of the feed-through terminal blocks are not included in the shielding measure with this procedure.

Es ist ferner grundsätzlich bekannt, Kunststoffgehäuse von elektronischen Geräten außenflächig zu metallisieren (Sonderdruck aus "Elektronik" Fachzeitschrift für Entwickler und industrielle Anwender, 32. Jahrgang, Nr. 10/1983). Dieser bekannte Grundgedanke führt noch nicht zu einer bezüglich der Abschirmung wirklich funktionssicheren und die eingangs genannten Kriech- und Luftstrecken ausreichend berücksichtigenden Lösung bei auf Tragschienen anzuordnenden Reihenklemmenanordnungen, in deren Innenraum zusätzlich zu den Leiteranschlüssen und deren Verbindungen untereinander auch elektronische Bauteile angeordnet sein können. Zu berücksichtigen ist dabei auch, daß im Regelfall in einer Anreihung derartiger Reihenklemmen die innen liegenden Reihenklemmen an ihrer sogenannten Montageseite offen gehalten sind, da sie an dieser Seite ja dann innerhalb der Anreihung vom Isolierstoffgehäuse der angrenzenden Reihenklemme, mit dem sie im Normalfall verrastet werden, verschlossen werden.It is also generally known to metallize plastic housings of electronic devices on the outside (special print from "Electronics" trade magazine for developers and industrial users, 32nd year, No. 10/1983). This known basic idea does not yet lead to a solution that is really reliable in terms of shielding and sufficiently takes into account the creepage and clearance distances mentioned at the beginning in the case of terminal block arrangements to be arranged on mounting rails, in the interior of which, in addition to the conductor connections and their connections, electronic components can also be arranged. It should also be taken into account that, as a rule, in a series of such terminal blocks, the internal terminal blocks on their so-called mounting side are kept open, since on this side they are within the row of the insulating housing of the adjacent terminal block, with which they are normally locked, be closed.

Der vorliegenden Erfindung liegt von daher die Aufgabe zugrunde, eine elektrisch abgeschirmte Reihenklemmenanordnung zu schaffen, die sich mit baulich geringem Aufwand und unter Berücksichtigung der erforderlichen Kriech- und Luftstrecken zuverlässig gegenüber Störfeldern abschirmen läßt.The present invention is therefore based on the object to provide an electrically shielded terminal block arrangement which can be reliably shielded from interference fields with little structural effort and taking into account the necessary creepage and clearance distances.

Die erfindungsgemäße Lösung besteht darin, daß die Reihenklemmen der Anordnung auf ihrer Montageseite durch eine Abschlußplatte aus elektrisch isolierendem Kunststoff geschlossen sind und die äußeren Seitenflächen der Klemmengehäuse sowie deren äußere schmalen Ober-, Rück- und Frontseiten unter Freilassung der Innenflächen der Zugangsöffnungen ineinander übergehend und nach unten zumindest bis hin zu und unter Einschluß einer im Fußbereich des Klemmengehäuses außerhalb des Klemmeninnenraumes liegenden Anschlußzone für den Anschluß an das Erd- und Massepotential metallisiert sind und dabei die Abschlußplatten an allen Außenflächen sowie in Berührungsflächenabschnitten zum jeweiligen Klemmengehäuse, und das Klemmengehäuse in den entsprechenden Berührungsflächenabschnitten zur Abschlußplatte in die angrenzenden Schmalseiten übergehend metallisiert sind.The solution according to the invention is that the terminal blocks of the arrangement are closed on their mounting side by an end plate made of electrically insulating plastic and the outer side surfaces of the terminal housings and their narrow outer top, back and front sides are merging and leaving each other leaving the inner surfaces of the access openings below are metallized at least up to and including a connection zone in the foot area of the terminal housing outside the terminal interior for connection to earth and ground potential and the end plates on all outer surfaces and in contact surface sections to the respective terminal housing, and the terminal housing in the corresponding contact surface sections are metallized to the end plate in the adjacent narrow sides.

Durch die Verwendung einer Abschlußplatte für jede Reihenklemme der Anordnung ergibt sich die Möglichkeit, bei jeder Reihenklemme unter Verschluß der Montageöffnung und insbesondere unter Berücksichtigung der auf die Montageöffnung zu zu berücksichtigenden Luft- und Kriechstrecken einen ringsum geschlossenen Abschirmkäfig zu erzeugen, in dem die genannten Außenflächen der Klemmengehäuse und der Abschlußplatten metallisiert werden, während andererseits die Wandstärken der Abschlußplatten und der Klemmengehäuse, die ja aus Isolierstoff bestehen, voll mit in die Berechnung der Luft- und Kriechstrecken eingehen können. Zur Einhaltung der Luft- und Kriechstrecken trägt auch bei, daß die Innenwände der Zugangsöffnungen in den Klemmengehäusen von der Metallisierung freigelassen werden. Die ineinander übergehende Metallisierung aller betroffenen äußeren Flächen am Klemmengehäuse und an der Abschlußplatte sowie die Schaffung gemeinsamer Berührungsflächen zwischen Klemmengehäuse und Abschlußplatte mit einer Metallisierung dieser gemeinsamen Berührungsflächen und des Überganges dieser Metallisierung zu den angrenzenden Schmalseiten ist dabei auch gewährleistet, daß alle metallisierten Flächen einer Reihenklemme mit ihrer Abschlußplatte am gleichen Potential liegen.By using an end plate for each terminal block of the arrangement, there is the possibility of producing a completely closed shielding cage in each terminal block, with the mounting opening closed and in particular taking into account the clearance and creepage distances to be taken into account in the mounting opening, in which the mentioned outer surfaces of the Terminal housing and the end plates are metallized while on the other hand the wall thicknesses of the end plates and the terminal housing, which are made of insulating material, can be fully included in the calculation of the air and creepage distances. To maintain the air and creepage distances also contributes to the fact that the inner walls of the access openings in the terminal housings are left free from the metallization. The merging metallization of all affected outer surfaces on the terminal housing and the end plate and the creation of common contact surfaces between the terminal housing and end plate with a metallization of these common contact surfaces and the transition of this metallization to the adjacent narrow sides is also ensured that all metallized surfaces of a terminal block with their end plate are at the same potential.

Es ergibt sich somit eine im wesentlichen den Innenraum einer Reihenklemme vollständig umschließende zuverlässige Abschirmung, und zwar unter voller Berücksichtigung der von Haus aus bei derartigen Reihenklemmen gegebenen Problematik der erforderlichen Kriech- und Luftstrecken.This results in a reliable shield essentially completely enclosing the interior of a terminal block, taking full account of the inherent problem of the necessary creepage and clearance distances with such terminal blocks.

Bevorzugte weitere Ausgestaltungen des Gegenstandes der Erfindung, die zum einfachen konstruktiven Aufbau und insbesondere auch zu einer einfachen Verbindungsmöglichkeit an das Massepotential beitragen, sind in den Unteransprüchen gekennzeichnet.Preferred further refinements of the subject matter of the invention, which contribute to the simple structural design and in particular also to a simple connection possibility to the ground potential, are characterized in the subclaims.

Ein Ausführungsbeispiel einer Reihenklemme mit zugeordneter Abschlußplatte als Teil einer Reihenklemmenanordnung gemäß der Erfindung wird nachstehend unter Bezugnahme auf die Zeichnung näher beschrieben.An embodiment of a terminal block with an associated end plate as part of a terminal block arrangement according to the invention is described below with reference to the drawing.

Es zeigen:

Figur 1
eine Seitenansicht der Reihenklemme unter Fortlassung der auf dieser Seite anzuordnenden Abschlußplatte mit Illustration zweier möglicher Massepotentialanschlüsse,
Figur 2
eine Frontansicht der Reihenklemme nach Figur 1,
Figur 3
eine Draufsicht auf die Reihenklemme nach Figur 1, in Verbindung mit einer Draufsicht auf die der Reihenklemme zugeordnete, ihre Montageöffnung verschließenden Abschlußplatte.
Show it:
Figure 1
a side view of the terminal block leaving out the end plate to be arranged on this page with illustration of two possible ground potential connections,
Figure 2
2 shows a front view of the terminal block according to FIG. 1,
Figure 3
a plan view of the terminal block according to Figure 1, in connection with a plan view of the terminal block associated with its mounting opening closing the end plate.

Die in den Figuren dargestellte Reihenklemme besitzt ein Klemmengehäuse 1 aus elektrisch isolierendem Kunststoff, wobei im Innenraum der Klemme in der üblichen Weise Anschlüsse 2 angeordnet sind, mit denen ein ankommender und ein abgehender elektrischer Leiter mit einer die Anschlüsse 2 verbindenden elektrisch leitenden Stromschiene 3 verbunden werden können. In dem Klemmengehäuse 1 sind in der schmalen Frontseite 4 sowie in der schmalen Rückseite 5 des Klemmengehäuses in der üblichen Weise Zugangsöffnungen 6 für das Einstecken der anzuschließenden Leiter vorgesehen. In der schmalen Oberseite 7 des Klemmengehäuses 1 sind Zugangsöffnungen 8 für einen Schraubendreher vorgesehen, um die den Leiteranschlüssen 2 zugeordneten Klemmschrauben zum Tätigen des Leiteranschlusses erreichen zu können. Der Innenraum des Klemmengehäuses 1 ist nach einer Seite, der sogenannten Montageseite hin, offen, so daß von dieser Seite her problemlos die Leiteranschlüsse 2, die Stromschiene 3 und gegebenenfalls weitere elektrische und elektronische Bauteile eingebracht werden können.The terminal block shown in the figures has a terminal housing 1 made of electrically insulating plastic, connections 2 being arranged in the interior of the terminal in the usual way, with which an incoming and an outgoing electrical conductor are connected to an electrically conductive busbar 3 connecting the connections 2 can. In the terminal housing 1, in the narrow front 4 and in the narrow rear 5 of the terminal housing, access openings 6 are provided in the usual manner for inserting the conductors to be connected. In the narrow top 7 of the terminal housing 1, access openings 8 are provided for a screwdriver in order to be able to reach the terminal screws assigned to the conductor connections 2 for making the conductor connection. The interior of the terminal housing 1 is open on one side, the so-called mounting side, so that from this side the conductor connections 2, the busbar 3 and, if appropriate, are problem-free further electrical and electronic components can be introduced.

Es besteht nun das Erfordernis, den Innenraum des Klemmengehäuses 1 unter Berücksichtigung der erforderlichen Luft- und Kriechstrecken möglichst vollständig gegen elektrische Störfelder abzuschirmen. Da insoweit die im Regelfall offene Montageseite der Reihenklemme eine besondere Problemzone darstellt, ist jeder Reihenklemme in der erfindungsgemäßen Reihenklemmenanordnung, also der Aneinanderreihung zahlreicher derartiger Reihenklemmen auf einer gemeinsamen Tragschiene 9, eine Abschlußplatte 10 aus elektrisch isolierendem Material zugeordnet. In zweckmäßiger Ausgestaltung ist die Abschlußplatte 10 mit Rastzapfen 11 versehen, die in Rastlöchern 12 des Klemmengehäuses 1 verrastet werden können.There is now a need to shield the interior of the terminal housing 1 as completely as possible against electrical interference fields, taking into account the required air and creepage distances. Since the assembly side of the terminal block, which is generally open, represents a particular problem area, each terminal block in the terminal block arrangement according to the invention, that is to say the stringing together of numerous such terminal blocks on a common mounting rail 9, is assigned an end plate 10 made of electrically insulating material. In an advantageous embodiment, the end plate 10 is provided with locking pins 11 which can be locked in locking holes 12 in the terminal housing 1.

Für die angestrebte elektrische Abschirmung von Störfeldern sind nun das Klemmengehäuse 1 und die Abschlußplatte 10 in speziellen, nachfolgend im einzelnen geschilderten Außenflächenbereichen metallisiert. Die Metallisierung ist in den Figuren der Zeichnung durch eine Punktierung aller betroffenen metallisierten Flächen illustriert.For the desired electrical shielding from interference fields, the terminal housing 1 and the end plate 10 are now metallized in special outer surface areas, which are described in detail below. The metallization is illustrated in the figures of the drawing by dotting all the metallized surfaces concerned.

Das Klemmengehäuse 1 ist zunächst auf seiner der Montageöffnung gegenüberliegenden geschlossenen großen Seitenfläche 13 vollständig metallisiert. Metallisiert sind ferner die schmale Frontfläche 4 und die schmale Rückfläche 5, dies aber im Hinblick auf die Luft- und Kriechstrecken unter Auslassung der Innenwänder der Zugangsöffnungen 6 für die ankommenden und abgehenden Leiter, die somit nicht metallisiert sind. Metallisiert ist ferner die schmale Oberseite 7 des Klemmengehäuses 1, dies aber unter Aussparung der Innenwände der Zugangsöffnungen 8 für den Schraubendreher, also der Innenwände, die zu den Klemmschrauben der Leiteranschlüsse 2 führen. Alle genannten Flächen sind ineinander übergehend, also auch jeweils übereck gehend, metallisiert, so daß alle genannten Flächen immer auf dem gleichen Potential liegen.The terminal housing 1 is first completely metallized on its closed large side surface 13 opposite the assembly opening. The narrow front surface 4 and the narrow rear surface 5 are also metallized, but with regard to the air and creepage distances, leaving out the inner walls of the access openings 6 for the incoming and outgoing conductors, which are therefore not metallized. The narrow upper side 7 of the terminal housing 1 is also metallized, but this with the recess of the inner walls of the access openings 8 for the screwdriver, that is, the inner walls that lead to the clamping screws of the conductor connections 2. All of the surfaces mentioned are merged into one another, that is to say also in each case going vertically, so that all of the surfaces mentioned are always at the same potential.

Nach unten hin umfaßt zweckmäßig die Metallisierung alle außen liegenden Flächen des Fußbereiches, insbesondere also alle denkbaren Flächen des Rastfußes 14, einschließlich des Aufnahmeraumes für eine Rastfeder 15. Derartige übliche Rastfedern 15 dienen der Verrastung der Reihenklemme auf der Tragschiene 9. Die Rastfedern 15 bestehen aus Metall. Wird also in einem solchen Fall mit einer Fastfeder 15 als Rastelement gearbeitet und liegt die Tragschiene 9 am Erd- oder Massepotential, hat man mit der Verrastung der Reihenklemme auf der Tragschiene schon gleich automatisch in denkbar einfacher Weise den gewünschten Anschluß aller Abschirmflächen des Klemmengehäuses 1 an das Massepotential über die Rastfeder 15.At the bottom, the metallization expediently includes all the outer surfaces of the foot area, in particular, therefore, all conceivable surfaces of the latching foot 14, including the receiving space for a latching spring 15. Such conventional latching springs 15 serve to latch the terminal block on the mounting rail 9. The latching springs 15 consist of Metal. If, in such a case, a fast spring 15 is used as the latching element and the support rail 9 is at earth or ground potential, the locking of the terminal block on the support rail automatically leads to the desired connection of all shielding surfaces of the terminal housing 1 in a very simple manner the ground potential via the detent spring 15.

Es ist ferner möglich, im unteren Fußbereich des Klemmengehäuses 1, jedoch abständig zum Innenraum des Klemmengehäuses, einen Aufnahmekanal 16 vorzusehen, dessen Innenwand ebenfalls vollflächig metallisiert wird, und zwar ebenfalls übergehend zur metallisierten Frontseite 4 und der metallisierten Rückseite 5 des Klemmengehäuses. Dies bietet eine weitere sehr zweckmäßige Möglichkeit des einfachen Anschlusses der elektrisch abschirmenden Flächen an ein Erd- bzw. Massepotential, und zwar für den Fall, daß einer der anzuschließenden Leiter ein sogenannter Koaxial-Leiter 17 ist, an dessen Erd- bzw. Massepotential über ein kleines Verbindungsstück eine in den Aufnahmekanal 16 einzusteckende Schirmschiene 18 aus elektrisch leitendem Material problemlos angeschlossen werden kann.It is also possible to provide a receiving channel 16 in the lower foot region of the terminal housing 1, but at a distance from the interior of the terminal housing, the inner wall of which is also completely metallized, and also going over to the metallized front side 4 and the metallized rear side 5 of the terminal housing. This offers a further very expedient possibility of simply connecting the electrically shielding surfaces to a ground or ground potential, in the event that one of the conductors to be connected is a so-called coaxial conductor 17 is at its ground or ground potential via a small connector a shield rail 18 to be inserted into the receiving channel 16 can be easily connected from electrically conductive material.

Es sind Anwendungsfälle denkbar, in denen ein Anschließen der Abschirmung an die Tragschiene von vornherein nicht in Betracht kommt, da die Tragschiene nicht als Erdpotentialschiene ausgebildet werden kann. Es sind ferner Anwendungsfälle denkbar, in denen ein Arbeiten mit einer metallischen Rastfeder 15 zum Verrasten auf eine Tragschiene nicht in Betracht kommt. In einem solchen Fall könnte daran gedacht werden, die Metallisierung des Klemmengehäuses nach unten nur bis hin zu und unter Einschluß der Innenwand des Aufnahmekanales 16 zu führen, da bei diesen Anwendungsfällen immer nur mit einer Schirmschiene gearbeitet werden kann, von der aus dann die Verbindung zum Erd- oder Massepotential durchzuführen ist.Applications are conceivable in which the shield cannot be connected to the mounting rail from the outset, since the mounting rail cannot be designed as an earth potential rail. Applications are also conceivable in which working with a metallic locking spring 15 for locking onto a mounting rail is out of the question. In such a case, it could be considered to lead the metallization of the terminal housing down to and including the inner wall of the receiving channel 16, since in these applications it is only possible to work with one shielding rail, from which the connection to Earth or ground potential is to be carried out.

Die jeder Reihenklemme der betroffenen Reihenklemmenanordnung zugeordnete seitliche Abschlußplatte 10 zum Verschließen der Montageöffnung ist an allen außenliegenden Seitenflächen metallisiert. Metallisiert sind also die außenliegende große Seitenfläche sowie umlaufend alle Schmal seitenflächen. Um auch diese Abschirmflächen nun sicher auf das gleiche Potential wie die geschilderten Abschirmflächen am Klemmengehäuse 1 zu bringen, sind darüber hinaus, naturgemäß unter Berücksichtigung eines ausreichenden Abstandes zum Innenraum des Klemmemgehäuses, gemeinsame Berührungsflächen zwischen der Abschirmplatte 10 und der betroffenen Seitenwand des Klemmengehäuses 1 geschaffen, die beide ebenfalls metallisiert sind und somit die Potentialgleichschaltung automatisch bei der Montage der Abschlußplatte 10 bewirken. In besonders zweckmäßiger A usgestaltung sind in diesem Zusammenhang im dargestellten Ausführungsbeispiel die Innenwände der Rastlöcher 12 im Klemmengehäuse 1 metallisiert und ausgehend von diesen, und zwar in elektrisch leitendem Übergang dazu, schmalere nach außen führende metallisierte Verbindungsstreifen 19, die elektrisch leitend ebenfalls in die Metallisierung der schmalen Frontseite 4 und der schmalen Rückseite 5 übergehen. An der Abschirmplatte 10 sind in entsprechender Weise die beiden Rastzapfen 11 metallisiert und von diesen ausgehend und in elektrischer Verbindung damit schmale Metallisierungsstreifen 20 in entsprechender Lage zu den Metallisierungsstreifen 19, wobei die Verbindungsstreifen 20 ebenfalls ihrerseits metallisch leitend in die angrenzenden schmalen Seiten der Abschirmplatte 10 übergehen. Das untere Ende der Abschirmplatte 10 nach ihrer Montage am Klemmengehäuse 1 ist in Figur 1 durch eine strichpunktierte Linie illustriert.The lateral end plate 10 assigned to each terminal block of the relevant terminal block arrangement for closing the assembly opening is metallized on all outer side surfaces. The outer large side surface and all the narrow side surfaces are all metallized. In order to bring these shielding surfaces to the same potential as the shielding surfaces on the terminal housing 1, there are, of course, taking into account a sufficient distance from the interior of the terminal housing, common contact surfaces between the shielding plate 10 and the affected side wall of the terminal housing 1 created, both of which are also metallized and thus automatically effect the potential synchronization when mounting the end plate 10. In a particularly expedient embodiment in this connection, the inner walls of the locking holes 12 in the terminal housing 1 are metallized in the exemplary embodiment shown, and starting from them, in an electrically conductive transition to this, narrower outwardly leading metallized connecting strips 19, which are also electrically conductive in the metallization of the pass over the narrow front 4 and the narrow rear 5. In a corresponding manner, the two locking pins 11 are metallized on the shielding plate 10 and, starting from them and in electrical connection therewith, narrow metallization strips 20 in a corresponding position to the metallization strips 19, the connection strips 20 also in turn transitioning in a metallically conductive manner into the adjacent narrow sides of the shielding plate 10 . The lower end of the shielding plate 10 after it has been mounted on the terminal housing 1 is illustrated in FIG. 1 by a dash-dotted line.

Claims (4)

  1. An electrically shielded modular terminal assembly with modular terminal blocks which have a housing (1) of electrically insulating plastics material, in the narrow sides (4, 5, 7) of which are respectively provided access openings (6, 8) for actuation of the internal conductor connecting terminals (2) and for insertion of electrical conductors (17) to be connected, and with connections to a ground or earth potential, characterised in that the modular terminal blocks of the assembly are closed on their mounting side by a closure plate (10) of electrically insulating plastics material, and the outer side surfaces (13) of the terminal housing (1) and the outer narrow front, back and top sides (4, 5, 7) of the terminal housing (1) are metallised, leaving free the inside surfaces of the access openings (6, 8), in such a way as to merge into each other and downwardly at least as far as and including a connecting zone (14 and 16 respectively) disposed in the base region of the terminal housing (1) outside the terminal interior, for connection to a ground or earth potential, and in that arrangement the closure plates (10) are metallised at all outside surfaces and in contact surface portions (11, 20) relative to the terminal housing (1) and the terminal housing is metallised in the corresponding contact surface portions (12, 19) relative to the closure plate (10), in such a way as to merge into the adjoining narrow sides.
  2. An electrically shielded modular terminal assembly according to claim 1 characterised in that provided in the base region of the terminal housing (1) is a receiving passage (16) for a shield bar (18), the inside wall of the passage being metallised, merging with the adjoining narrow sides (4, 5).
  3. An electrically shielded modular terminal assembly according to claim 1 or claim 2 characterised in that the base region (14) of the terminal housing (1), including the receiving space for a metal retaining element (15) for retention on the support bar (9), is formed by metallisation as a connection zone for connection to the ground and earth potential.
  4. An electrically shielded modular terminal assembly according to claim 1 characterised in that the closure plate (10) has retaining projections (11) for which retaining holes (12) are provided in the terminal housing (1) and the retaining projections (11) of the closure plate (10) and a connecting strip (20) extending therefrom to the adjoining outside surface of the closure plate (10) and also the retaining holes (12) in the terminal housing (1) and extending therefrom outwardly a correspondingly disposed connecting strip (19) of the adjoining terminal housing wall are also metallised as far as the adjoining narrow side (4, 5).
EP89109368A 1989-05-24 1989-05-24 Electrically shielded in-line terminal assembly Expired - Lifetime EP0403666B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP89109368A EP0403666B1 (en) 1989-05-24 1989-05-24 Electrically shielded in-line terminal assembly
DE58907521T DE58907521D1 (en) 1989-05-24 1989-05-24 Electrically shielded terminal block arrangement.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89109368A EP0403666B1 (en) 1989-05-24 1989-05-24 Electrically shielded in-line terminal assembly

Publications (2)

Publication Number Publication Date
EP0403666A1 EP0403666A1 (en) 1990-12-27
EP0403666B1 true EP0403666B1 (en) 1994-04-20

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EP89109368A Expired - Lifetime EP0403666B1 (en) 1989-05-24 1989-05-24 Electrically shielded in-line terminal assembly

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EP (1) EP0403666B1 (en)
DE (1) DE58907521D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4018517A4 (en) * 2019-09-30 2023-08-23 BAKC Capital Group Din rail shield

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Publication number Priority date Publication date Assignee Title
FR2698511B1 (en) * 1992-11-20 1995-01-06 Jacques Nozick Communication system with contact strip for high speed communications.
DE4303717C2 (en) * 1993-02-09 1996-02-08 Phoenix Contact Gmbh & Co Module for connecting electrical lines and for processing and / or processing electrical signals
GB2277201A (en) * 1993-04-17 1994-10-19 Telematic Systems Ltd Rail-mountable enclosure for electrical device

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EP0090539A3 (en) * 1982-03-31 1985-11-21 AMP INCORPORATED (a New Jersey corporation) Shielded connector
DE3228398C2 (en) * 1982-07-29 1986-06-05 Siemens AG, 1000 Berlin und 8000 München HF-proof plug-in module
FR2532811B1 (en) * 1982-09-08 1986-12-26 Legrand Sa COMPONENT HOLDER (S)
DE3505617C1 (en) * 1985-02-19 1986-04-17 C.A. Weidmüller GmbH & Co, 4930 Detmold Terminal block arrangement
DE3631696A1 (en) * 1986-09-18 1988-04-07 Wilde Membran Impuls Tech Metallised, textile sheet-like structure as a guard against electromagnetic radiation in electrical and electronic equipment and components

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Title
ELEKTRONIK, Nr. 10, 20. Mai 1983, Seiten 93-96, München (DE), P. Schreyer: "Metallbeschichtung in Kunststoffgehäusen" *
TOUTE L'ELECTRONIQUE, Nr. 502, März 1985, Seiten 53-55, Paris (FR), P. Leroy: "Les reventements conducteurs: une solution aux interférences EMI/RFI" *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4018517A4 (en) * 2019-09-30 2023-08-23 BAKC Capital Group Din rail shield
US11799248B2 (en) 2019-09-30 2023-10-24 BAKC Capital Group DIN rail shield

Also Published As

Publication number Publication date
DE58907521D1 (en) 1994-05-26
EP0403666A1 (en) 1990-12-27

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