EP0233458B1 - Protective-cable terminal - Google Patents

Protective-cable terminal Download PDF

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Publication number
EP0233458B1
EP0233458B1 EP87100194A EP87100194A EP0233458B1 EP 0233458 B1 EP0233458 B1 EP 0233458B1 EP 87100194 A EP87100194 A EP 87100194A EP 87100194 A EP87100194 A EP 87100194A EP 0233458 B1 EP0233458 B1 EP 0233458B1
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EP
European Patent Office
Prior art keywords
rail
foot
pressure spring
recess
edge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP87100194A
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German (de)
French (fr)
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EP0233458A1 (en
Inventor
Zdenek Krec
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Siemens AG
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Siemens AG
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Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT87100194T priority Critical patent/ATE64798T1/en
Publication of EP0233458A1 publication Critical patent/EP0233458A1/en
Application granted granted Critical
Publication of EP0233458B1 publication Critical patent/EP0233458B1/en
Anticipated expiration legal-status Critical
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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
    • 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 a protective conductor terminal, in particular in a terminal block housing, the foot of which serves as a tension bracket and has supports in a deep and in a shallow recess for support on hat-shaped support rails in cross section and holds a compression spring which springs with sliding zones against the recesses and when Put on a mounting rail to make contact.
  • An electrical terminal block is known, which is designed as a protective conductor terminal (DE-PS 31 26 535), in which a pressure bracket, under the force of the clamping screw of an electrical connecting terminal, presses against a rail edge of a mounting rail inserted into the recesses of the tension bracket.
  • the electrical contact should be achieved by teeth in the support of the associated recess for the rail edge in the drawbar.
  • the protective conductor connecting terminal does not initially find a secure hold when it is placed on the mounting rail, which disturbs during assembly.
  • a secure hold on the mounting rail is achieved regardless of the clamping screw, but an additional spring is used for this.
  • the invention has for its object to develop a protective conductor terminal that finds a secure hold already when it is placed on the mounting rail, but does with a single compression spring.
  • the solution of the described task is according to the invention that the compression spring due to its shape with respect to the recesses in the foot and with respect to abutments on the foot when placing the foot with the deep recess on a mounting rail and tensioning and moving the foot to grip around the rail edge caused by the flat recess by a force component parallel to the rail plane.
  • the slide-on zones are aligned here so that the compressive force of the tensioned compression spring has a component which is directed parallel to the rail plane to the flat recess and, in counteraction with the rail, pulls the foot with the flat recess onto the rail edge.
  • the sliding movement on the sliding zone also allows dirt or oxide layers to be rubbed off, so that electrical contact is ensured.
  • the protective conductor terminal can generate the forces for transferring your foot into a secure hold on the mounting rail according to claim 2 only at the deep recess, according to claim 3 solely by the sliding zone on the flat recess or according to claim 4 by mutual support.
  • the deep recess in the foot of the protective conductor connection terminal enables an oblique placement on a mounting rail according to the shape and inclination of the support for the rail edge, the placement and removal is facilitated. On the other hand, this also gives a visual indication of which terminal is attached and which terminal is only loosely attached.
  • a protective conductor terminal is shown with the housing cut open.
  • a foot of an embodiment is shown in side view, which can be part of a protective conductor terminal according to Fig. 1 or another terminal.
  • Fig. 3 the foot of Fig. 2 is shown in bottom view.
  • FIG. 4 illustrates how the foot according to FIG. 2 is placed under tensioning the compression spring.
  • Fig. 5 the foot is shown snapped onto a mounting rail.
  • Fig. 6 an inclined foot is shown. The foot is in this position when loosening; it can also be brought into this position when it is put on.
  • a protective conductor terminal is illustrated, the foot of which is designed according to the invention.
  • the protective conductor connection terminal 1 has a foot 2, which forms a pull bracket for attachment to a mounting rail.
  • he has in a deep recess 3 and in a flat recess 4 supports for support on hat-shaped support rails 5 - according to FIG. If you put the protective conductor terminal 1 on a mounting rail, it is tensioned, which also ensures electrical contact.
  • 1 is in the exemplary embodiment part of a terminal block with further connection levels 9 and 10.
  • the compression spring 6 is tensioned by its shape with respect to the recesses 3, 4 in the foot 2 and with respect to abutments 11, 12 on the foot 2 when the foot with the deep recess 3 is placed on a mounting rail. Under the force of the tensioned compression spring, the foot 2 is then shifted until the flat recess 4 is gripped around the rail edge. This causes a force component of the spring in each case parallel to the rail plane in counteraction with the rail.
  • the compression spring 6 As a holder for the compression spring 6 13 in a flank U-shaped bent foot 2 according to FIGS. 2 and 3 in its flanks 13 14 excluded. Lugs 15 of the compression spring 6 engage in this, with play being left so that the compression spring 6 remains somewhat displaceable in the longitudinal direction in the foot 2.
  • the compression spring 6 is formed from round wire, which is bent at one end and returned over the entire length of the spring, as can be seen from FIG. 3.
  • the spring jet not only has the advantage of strong compressive forces, but also low friction and good contact, since the compression spring rubs dirt and oxide layers in a narrow channel when it slides on a mounting rail.
  • Fig. 4 it is illustrated how a protective conductor terminal with two sliding zones 7 and 8, with its foot 2 is placed on a mounting rail 5.
  • a mounting rail edge is inserted into the deep recess 3.
  • the compression spring 6 is supported between its holder, window 14, in the foot and the deep recess 3 against an abutment 11 on the foot. With its rounded end, it engages in the deep recess 3, the apex 16 still lying outside the rail edge when the position is raised by the rail thickness.
  • the compression spring 6 is at the rail edge in an imaginary sliding plane 17.
  • a horizontal component of the spring force oriented with reference to the drawing acts, which pushes the foot 2 against the rail edge and thereby pulls the flat recess 4 onto the other rail edge.
  • the compression spring 6 When the compression spring 6 is tensioned, it changes from a position according to FIG. 2 into a position according to FIG. 4.
  • the other rail edge slides along the slope 18 of the foot in the flat recess. 5 is snapped onto the mounting rail, the end of the compression spring 6 is supported against an abutment 12 on the foot.
  • This abutment is seen in the longitudinal direction of the foot near the support 19 of the compression spring 6 on the rail edge in order to form a hard spring for the terminal seat and for making contact.
  • the compression spring is then raised by the rail thickness.
  • the compression spring 6 can be supported at least shortly before against the abutment 12 in order to increase the spring force.
  • the compression spring 6 between the flat recess 4 and the position of the adjacent inner rail edge 20 of an inserted mounting rail has a sliding zone 8 according to the exemplary embodiment in a sliding plane 21 which runs obliquely to the rail edge, as shown in FIG Carrier rail can be snapped on.
  • This slide zone on the flat recess supports the effect of the slide zone on the deep recess.
  • the end of the compression spring 6 between the support 19 according to FIG. 5 at the rail edge and the abutment 12 at the foot 2 provides essential holding forces for the protective conductor terminal, when it is snapped onto a mounting rail.
  • the compression spring 6 conveys further holding forces with its other end depending on the length between the abutment 11 at the base 2 and the support in the sliding plane 17 at the rail edge, in connection with the clamping point in the window 14.
  • the forces which ensure that the Feet with its shallow recess 4 on the rail edge is provided by the sliding planes 17 and 21. It is sufficient if one of the sliding planes 17 and 21 can take effect. These can support each other with two levels of glide.
  • the deep recess 3 in the foot 2 enables an oblique placement on the mounting rail by the shape and / or inclination of the support 22 for the rail edge. This position can be achieved in particular if the foot 2 is released from the mounting rail 5 by lateral pressure on the rail edge at the deep recess 3. If a slide zone 8 is formed on the compression spring 6 in front of its opposite end, the inclined position of the foot according to FIG. 6 can also be allowed for assembly, since the slide zone 8 then ensures that the foot 2 is securely pulled up and held during assembly.

Abstract

A protective cable terminal (1), particularly in a series terminal housing whose base (2) is used as a strain-relief clamp and has supports in a deep, and in a flat cut-out (3; 4) for supporting on carrier rails (5) of cap-shaped cross-section, and which holds a compression spring (6) which is prestressed by means of sliding zones (7, 8) against cut-outs (3, 4) and is stressed on being placed on a carrier rail, in order to make contact. According to the invention, it is provided that, as a result of its shape with respect to the cut- outs (3, 4) in the base (2), and with respect to supports (11, 12) on the base (2), when the base is placed with the deep cut-out (3) on a carrier rail, the compression spring (6) and a movement of the base (2) stress the rail, which results in engagement of the edge of the rail with the flat cut-out (4), as a result of a force component parallel to the plane of the rail. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Schutzleiteranschlußklemme, insbesondere in einem Reihenklemmengehäuse, deren Fuß als Zugbügel dient und in einer tiefen sowie in einer flachen Ausnehmung Auflagen zum Abstützen an im Querschnitt hutförmigen Tragschienen aufweist und eine Druckfeder hält, die mit Aufgleitzonen gegen die Ausnehmungen vorfedert und beim Aufsetzen auf eine Tragschiene gespannt wird, um Kontakt zu geben.The invention relates to a protective conductor terminal, in particular in a terminal block housing, the foot of which serves as a tension bracket and has supports in a deep and in a shallow recess for support on hat-shaped support rails in cross section and holds a compression spring which springs with sliding zones against the recesses and when Put on a mounting rail to make contact.

Es ist eine elektrische Reihenklemme bekannt, die als Schutzleiteranschlußklemme ausgebildet ist (DE-PS 31 26 535), bei der ein Druckbügel unter der Kraft der Klemmschraube einer elektrischen Anschlußklemme gegen einen Schienenrand einer in die Ausnehmungen des Zugbügels eingelegten Tragschiene drückt. Der elektrische Kontakt soll dabei durch Zähne in der Auflage der zugeordneten Ausnehmung für den Schienenrand im Zugbügel erreicht werden.An electrical terminal block is known, which is designed as a protective conductor terminal (DE-PS 31 26 535), in which a pressure bracket, under the force of the clamping screw of an electrical connecting terminal, presses against a rail edge of a mounting rail inserted into the recesses of the tension bracket. The electrical contact should be achieved by teeth in the support of the associated recess for the rail edge in the drawbar.

Nach einer anderen bekannten Schutzleiteranschlußklemme (DE-PS 33 39 365) drückt die Klemmschraube einer elektrischen Anschlußklemme für den Schutzleiter gegen einen Kipphebel, der sich im Fuß der Klemme auf seiner anderen Hebelseite gegen den Tragschienenrand verspannt.According to another known protective conductor connection terminal (DE-PS 33 39 365) presses the clamping screw of an electrical connection terminal for the protective conductor against a rocker arm which braces against the edge of the mounting rail in the foot of the terminal on its other lever side.

Bei den bekannten Schutzleiteranschlußklemmen, bei denen die Klemmschraube zum Anschließen des elektrischen Schutzleiters die Klemme an der Tragschiene verspannt, findet die Schutzleiteranschlußklemme beim Aufsetzen auf die Tragschiene zunächst keinen sicheren Halt, was bei der Montage stört. Bei der Schutzleiteranschlußklemme mit älterem Zeitrang ist ein sicherer Halt auf der Tragschiene zwar unabhängig von der Klemmschraube erzielt, hierzu wird jedoch eine Zusatzfeder eingesetzt.In the known protective conductor connecting terminals, in which the clamping screw for connecting the electrical protective conductor tensions the terminal on the mounting rail, the protective conductor connecting terminal does not initially find a secure hold when it is placed on the mounting rail, which disturbs during assembly. With the protective conductor connection terminal with older seniority, a secure hold on the mounting rail is achieved regardless of the clamping screw, but an additional spring is used for this.

Der Erfindung liegt die Aufgabe zugrunde, eine Schutzleiteranschlußklemme zu entwickeln, die schon beim Aufsetzen auf die Tragschiene sicheren Halt findet, hierzu aber mit einer einzigen Druckfeder auskommt.The invention has for its object to develop a protective conductor terminal that finds a secure hold already when it is placed on the mounting rail, but does with a single compression spring.

Die Lösung der geschilderten Aufgabe besteht nach der Erfindung darin, daß die Druckfeder durch ihre Form hinsichtlich der Ausnehmungen im Fuß und bezüglich Widerlagern am Fuß beim Aufsetzen des Fußes mit der tiefen Ausnehmung auf einer Tragschiene ihr Spannen und ein Verschieben des Fußes zum Umgreifen des Schienenrandes mit der flachen Ausnehmung durch eine Kraftkomponente parallel zur Schienenebene bewirkt. Die Aufgleitzonen sind hier so ausgerichtet, daß die Druckkraft der gespannten Druckfeder eine Komponente aufweist, die parallel zur Schienenebene zur flachen Ausnehmung gerichtet ist und in Gegenwirkung mit der Schiene den Fuß mit der flachen Ausnehmung auf den Schienenrand aufzieht. Die Gleitbewegung an der Aufgleitzone läßt zugleich Schmutz- oder Oxidschichten abreiben, so daß elektrischer Kontakt sichergestellt ist.The solution of the described task is according to the invention that the compression spring due to its shape with respect to the recesses in the foot and with respect to abutments on the foot when placing the foot with the deep recess on a mounting rail and tensioning and moving the foot to grip around the rail edge caused by the flat recess by a force component parallel to the rail plane. The slide-on zones are aligned here so that the compressive force of the tensioned compression spring has a component which is directed parallel to the rail plane to the flat recess and, in counteraction with the rail, pulls the foot with the flat recess onto the rail edge. The sliding movement on the sliding zone also allows dirt or oxide layers to be rubbed off, so that electrical contact is ensured.

Die Schutzleiteranschlußklemme kann die Kräfte zum Überführen ihres Fußes in sicheren Halt an der Tragschiene nach Patentanspruch 2 allein an der tiefen Ausnehmung erzeugen, nach Patentanspruch 3 allein durch die Aufgleitzone an der flachen Ausnehmung oder nach Patentanspruch 4 durch wechselseitige Unterstützung.The protective conductor terminal can generate the forces for transferring your foot into a secure hold on the mounting rail according to claim 2 only at the deep recess, according to claim 3 solely by the sliding zone on the flat recess or according to claim 4 by mutual support.

Wenn die Druckfeder in Flanken des Fußes durch Nasen in Fenstern gehalten ist, die im Fenster mit Spiel eingreifen, kann Toleranz zu Tragschienen sichergestellt werden.If the compression spring is held in the flanks of the foot by lugs in windows that engage in the window with play, tolerance to mounting rails can be ensured.

Bei einer Druckfeder aus Runddraht wird der mechanische Widerstand beim Aufgleiten verringert und andererseits der elektrische Kontakt verbessert.With a compression spring made of round wire, the mechanical resistance when sliding on is reduced and, on the other hand, the electrical contact is improved.

Wenn die tiefe Ausnehmung im Fuß der Schutzleiteranschlußklemme nach Form und Neigung der Auflage für den Schienenrand ein schräges Aufsetzen auf einer Tragschiene ermöglicht, wird das Aufsetzen und Abnehmen erleichtert. Andererseits erhält man hierdurch auch einen optischen Hinweis, welche Klemme aufgesetzt ist und welche Klemme erst lose angesetzt ist.If the deep recess in the foot of the protective conductor connection terminal enables an oblique placement on a mounting rail according to the shape and inclination of the support for the rail edge, the placement and removal is facilitated. On the other hand, this also gives a visual indication of which terminal is attached and which terminal is only loosely attached.

Die Erfindung soll nun anhand von in der Zeichnung grob schematisch wiedergegebenen Ausführungsbeispielen näher erläutert werden:
In Fig. 1 ist eine Schutzleiteranschlußklemme bei aufgeschnittenem Gehäuse wiedergegeben.
In Fig. 2 ist ein Fuß einer Ausführungsart in Seitenansicht wiedergegeben, der Teil einer Schutzleiteranschlußklemme nach Fig. 1 oder einer anderen Anschlußklemme sein kann.
In Fig. 3 ist der Fuß nach Fig. 2 in Untersicht dargestellt.
In Fig. 4 ist veranschaulicht, wie der Fuß nach Fig. 2 unter Spannen der Druckfeder aufgesetzt wird.
In Fig. 5 ist der Fuß auf eine Tragschiene aufgerastet dargestellt.
In Fig. 6 ist ein schräggestellter Fuß wiedergegeben. In dieser Lage befindet sich der Fuß beim Lösen; er kann auch beim Aufsetzen in diese Lage gebracht werden.The invention will now be explained in greater detail on the basis of exemplary embodiments shown roughly schematically in the drawing:
In Fig. 1, a protective conductor terminal is shown with the housing cut open.
In Fig. 2, a foot of an embodiment is shown in side view, which can be part of a protective conductor terminal according to Fig. 1 or another terminal.
In Fig. 3 the foot of Fig. 2 is shown in bottom view.
FIG. 4 illustrates how the foot according to FIG. 2 is placed under tensioning the compression spring.
In Fig. 5 the foot is shown snapped onto a mounting rail.
In Fig. 6 an inclined foot is shown. The foot is in this position when loosening; it can also be brought into this position when it is put on.

In Fig. 1 ist eine Schutzleiterklemme veranschaulicht, deren Fuß erfindungsgemäß ausgeführt ist. Die Schutzleiteranschlußklemme 1 weist einen Fuß 2 auf, der einen Zugbügel zum Befestigen an einer Tragschiene bildet. Hierzu hat er in einer tiefen Ausnehmung 3 sowie in einer flachen Ausnehmung 4 Auflagen zum Abstützen an im Querschnitt hutförmigen Tragschienen 5 - nach Fig. 4. Der Zugbügel hält eine Druckfeder 6, die mit Aufgleitzonen 7, 8 gegen die Ausnehmungen 3, 4 vorfedert. Wenn man die Schutzleiteranschlußklemme 1 auf eine Tragschiene aufsetzt, wird sie gespannt, wodurch auch elektrischer Kontakt sichergestellt wird. Die Schutzleiteranschlußklemme 1 nach Fig. 1 ist im Ausführungsbeispiel Teil einer Reihenklemme mit weiteren Anschlußebenen 9 und 10.In Fig. 1, a protective conductor terminal is illustrated, the foot of which is designed according to the invention. The protective conductor connection terminal 1 has a foot 2, which forms a pull bracket for attachment to a mounting rail. For this purpose, he has in a deep recess 3 and in a flat recess 4 supports for support on hat-shaped support rails 5 - according to FIG. If you put the protective conductor terminal 1 on a mounting rail, it is tensioned, which also ensures electrical contact. 1 is in the exemplary embodiment part of a terminal block with further connection levels 9 and 10.

Wesentlich ist, daß die Druckfeder 6 durch ihre Form hinsichtlich der Ausnehmungen 3, 4 im Fuß 2 und bezüglich Widerlagern 11, 12 am Fuß 2 beim Aufsetzen des Fußes mit der tiefen Ausnehmung 3 auf einer Tragschiene gespannt wird. Unter der Kraft der gespannten Druckfeder erfolgt dann ein Verschieben des Fußes 2 bis zum Umgreifen des Schienenrandes mit der flachen Ausnehmung 4. Dies bewirkt jeweils eine Kraftkomponente der Feder parallel zur Schienenebene in Gegenwirkung mit der Schiene.It is essential that the compression spring 6 is tensioned by its shape with respect to the recesses 3, 4 in the foot 2 and with respect to abutments 11, 12 on the foot 2 when the foot with the deep recess 3 is placed on a mounting rail. Under the force of the tensioned compression spring, the foot 2 is then shifted until the flat recess 4 is gripped around the rail edge. This causes a force component of the spring in each case parallel to the rail plane in counteraction with the rail.

Als Halterung für die Druckfeder 6 sind in einem im Querschnitt U-förmig gebogenen Fuß 2 nach den Fig. 2 und 3 in seinen Flanken 13 Fenster 14 ausgenommen. In diese greifen Nasen 15 der Druckfeder 6 ein, wobei Spiel belassen wird, so daß die Druckfeder 6 im Fuß 2 in dessen Längsrichtung etwas verschieblich bleibt. Die Druckfeder 6 ist aus Runddraht geformt, der an einem Ende umgebogen und über die gesamte Länge der Feder zurückgeführt ist, wie es aus Fig. 3 zu ersehen ist. Federstrahl hat nicht nur den Vorteil starker Druckkräfte, sondern bewirkt auch geringe Reibung und guten Kontakt, da die Druckfeder beim Aufgleiten auf einer Tragschiene Schmutz- und Oxidschichten in einer schmalen Wirkungsrinne kräftig abreibt.As a holder for the compression spring 6 13 in a flank U-shaped bent foot 2 according to FIGS. 2 and 3 in its flanks 13 14 excluded. Lugs 15 of the compression spring 6 engage in this, with play being left so that the compression spring 6 remains somewhat displaceable in the longitudinal direction in the foot 2. The compression spring 6 is formed from round wire, which is bent at one end and returned over the entire length of the spring, as can be seen from FIG. 3. The spring jet not only has the advantage of strong compressive forces, but also low friction and good contact, since the compression spring rubs dirt and oxide layers in a narrow channel when it slides on a mounting rail.

In Fig. 4 ist veranschaulicht, wie eine Schutzleiteranschlußklemme mit zwei Aufgleitzonen 7 und 8, mit ihrem Fuß 2 auf einer Tragschiene 5 aufgesetzt wird. Ein Tragschienenrand ist in die tiefe Ausnehmung 3 eingesetzt. Die Druckfeder 6 stützt sich zwischen ihrer Halterung, Fenster 14, im Fuß und der tiefen Ausnehmung 3 gegen ein Widerlager 11 am Fuß ab. Mit ihrem verrundeten Ende greift sie in die tiefe Ausnehmung 3 ein, wobei der Scheitelpunkt 16 bei einer um die Schienendicke angehobenen Lage noch außerhalb des Schienenrandes liegt.In Fig. 4 it is illustrated how a protective conductor terminal with two sliding zones 7 and 8, with its foot 2 is placed on a mounting rail 5. A mounting rail edge is inserted into the deep recess 3. The compression spring 6 is supported between its holder, window 14, in the foot and the deep recess 3 against an abutment 11 on the foot. With its rounded end, it engages in the deep recess 3, the apex 16 still lying outside the rail edge when the position is raised by the rail thickness.

Am Schienenrand steht dadurch die Druckfeder 6 in einer gedachten Aufgleitebene 17 an. Dadurch wirkt eine anhand der Zeichnung orientierte horizontale Komponente der Federkraft, die den Fuß 2 gegen den Schienenrand abstößt und dadurch die flache Ausnehmung 4 auf den anderen Schienenrand aufzieht.As a result, the compression spring 6 is at the rail edge in an imaginary sliding plane 17. As a result, a horizontal component of the spring force oriented with reference to the drawing acts, which pushes the foot 2 against the rail edge and thereby pulls the flat recess 4 onto the other rail edge.

Beim Spannen der Druckfeder 6 geht diese aus einer Lage nach Fig. 2 in eine Lage nach Fig. 4 über. Hierbei gleitet der andere Schienenrand bei der flachen Ausnehmung an der Schräge 18 des Fußes entlang. Wenn die Schutzleiteranschlußklemme nach Fig. 5 auf der Tragschiene eingerastet ist, stützt sich das Ende der Druckfeder 6 gegen ein Widerlager 12 am Fuß ab. Dieses Widerlager ist in Fußlängsrichtung gesehen in der Nähe der Auflage 19 der Druckfeder 6 am Schienenrand angeordnet, um eine harte Feder für den Klemmensitz und für die Kontaktgabe zu bilden. Die Druckfeder ist dann um die Schienendicke angehoben. Die Druckfeder 6 kann sich zumindest schon kurz zuvor gegen das Widerlager 12 abstützen, um die Federkraft zu verstärken.When the compression spring 6 is tensioned, it changes from a position according to FIG. 2 into a position according to FIG. 4. Here, the other rail edge slides along the slope 18 of the foot in the flat recess. 5 is snapped onto the mounting rail, the end of the compression spring 6 is supported against an abutment 12 on the foot. This abutment is seen in the longitudinal direction of the foot near the support 19 of the compression spring 6 on the rail edge in order to form a hard spring for the terminal seat and for making contact. The compression spring is then raised by the rail thickness. The compression spring 6 can be supported at least shortly before against the abutment 12 in order to increase the spring force.

Wenn die Druckfeder 6 zwischen der flachen Ausnehmung 4 und der Position der benachbarten inneren Schienenkante 20 einer eingesetzten Tragschiene eine Aufgleitzone 8 nach Ausführungsbeispiel in einer zum Schienenrand schräg verlaufenden Aufgleitebene 21 nach Fig. 4 aufweist, kann der Fuß hierdurch mit der flachen Ausnehmung 4 auf eine Tragschiene aufgerastet werden. Diese Aufgleitzone an der flachen Ausnehmung unterstützt hier die Wirkung der Aufgleitzone an der tiefen Ausnehmung.If the compression spring 6 between the flat recess 4 and the position of the adjacent inner rail edge 20 of an inserted mounting rail has a sliding zone 8 according to the exemplary embodiment in a sliding plane 21 which runs obliquely to the rail edge, as shown in FIG Carrier rail can be snapped on. This slide zone on the flat recess supports the effect of the slide zone on the deep recess.

Das Ende der Druckfeder 6 zwischen der Auflage 19 nach Fig. 5 am Schienenrand und dem Widerlager 12 am Fuß 2 vermittelt wesentliche Haltekräfte für die Schutzleiteranschlußklemme, wenn diese auf einer Tragschiene aufgerastet ist. Weitere Haltekräfte vermittelt die Druckfeder 6 mit ihrem anderen Ende in Abhängigkeit von der Länge zwischen dem Widerlager 11 am Fuß 2 und der Auflage in der Aufgleitebene 17 am Schienenrand, in Verbindung mit der Einspannstelle im Fenster 14. Die Kräfte, die dafür sorgen, daß der Fuß mit seiner flachen Ausnehmung 4 auf dem Schienenrand aufgezogen wird, liefern die Aufgleitebenen 17 und 21. Es genügt, wenn eine der Aufgleitebenen 17 und 21 wirksam werden kann. Bei zwei Aufgleitebenen können sich diese unterstützen.The end of the compression spring 6 between the support 19 according to FIG. 5 at the rail edge and the abutment 12 at the foot 2 provides essential holding forces for the protective conductor terminal, when it is snapped onto a mounting rail. The compression spring 6 conveys further holding forces with its other end depending on the length between the abutment 11 at the base 2 and the support in the sliding plane 17 at the rail edge, in connection with the clamping point in the window 14. The forces which ensure that the Feet with its shallow recess 4 on the rail edge is provided by the sliding planes 17 and 21. It is sufficient if one of the sliding planes 17 and 21 can take effect. These can support each other with two levels of glide.

Es ist günstig, wenn nach Fig. 6 die tiefe Ausnehmung 3 im Fuß 2 durch Form und/oder Neigung der Auflage 22 für den Schienenrand ein schräges Aufsetzen auf der Tragschiene ermöglicht. Diese Position kann insbesondere erreicht werden, wenn der Fuß 2 von der Tragschiene 5 durch seitlichen Druck auf den Schienenrand an der tiefen Ausnehmung 3 gelöst wird. Wenn an der Druckfeder 6 vor ihrem gegenüberliegenden Ende eine Aufgleitzone 8 ausgebildet ist, kann man die Schrägstellung des Fußes nach Fig. 6 auch für die Montage gestatten, da die Aufgleitzone 8 dann sicherstellt daß der Fuß 2 beim Montieren sicher aufgezogen und gehalten wird.It is advantageous if, according to FIG. 6, the deep recess 3 in the foot 2 enables an oblique placement on the mounting rail by the shape and / or inclination of the support 22 for the rail edge. This position can be achieved in particular if the foot 2 is released from the mounting rail 5 by lateral pressure on the rail edge at the deep recess 3. If a slide zone 8 is formed on the compression spring 6 in front of its opposite end, the inclined position of the foot according to FIG. 6 can also be allowed for assembly, since the slide zone 8 then ensures that the foot 2 is securely pulled up and held during assembly.

Claims (7)

  1. Protective-conductor terminal (1), in particular in a terminal block housing, the foot (2) of which terminal serves as a tensioning clamp and has, in a deep recess and also in a shallow recess (3; 4), rests for the purposes of support on bearing rails (5), which are hat-shaped in cross section, and holds a pressure spring (6), characterised in that the pressure spring (6) is pre-sprung with over-slide zones (7, 8) against recesses (3, 4) and is tensioned when mounting on a bearing rail in order to make contact, with the pressure spring (6), as a result of its shape with respect to the recesses (3, 4) in the foot (2) and with regard to abutments (11, 12) on the foot (2), when mounting the foot with the deep recess (3) on a bearing rail, effecting the tensioning thereof and a displacement of the foot (2) for the purpose of embracing the rail edge with the shallow recess (4) by means of a force component parallel to the rail plane.
  2. Protective-conductor terminal according to claim 1, characterised in that, when one rail edge has been inserted into the deep recess (3), the other edge of the bearing rail is introduced into the shallow recess (4) under the tension of the pressure spring (6), with the pressure spring being supported between its mounting support in the foot and the deep recess (3) against an abutment (11) on the foot and being rounded in the recess, and in that the rounded end of the pressure spring (6) extends into the deep recess (3) such that the vertex (16) of the rounded end lies in a position, raised by the rail thickness, beyond the rail edge and in that the spring forms, with respect to the rail edge, an over-slide zone in an over-slide plane (17), in that the other end of the pressure spring (6) is supported at least in a position, raised by the rail thickness, against an abutment (12), which, viewed in the longitudinal direction of the foot, is arranged close to the rest (19) of the pressure spring (6) at the rail edge in order to form a stiff spring.
  3. Protective-conductor terminal according to claim 1, characterised in that, when one rail edge has been inserted into the deep recess (3), the other edge of the bearing rail is introduced into the shallow recess (4), under the tension of the pressure spring (6), with the pressure spring being supported between its mounting support in the foot and the deep recess (3) against an abutment on the foot and being rounded in the recess and forming near the shallow recess (4) an over-slide zone, and in that the pressure spring (6) is supported beyond the shallow recess (4) at least in a position, raised by the rail thickness, against an abutment (12) which, viewed in the longitudinal direction of the foot, is arranged close to the rest (19) of the pressure spring (6) at the rail edge in order to form a stiff spring, and in that the pressure spring (6) has, between the shallow recess (4) and the position of the adjacent inner rail corner (20) of a bearing rail which is imagined to have been inserted, an over-slide zone (8) in an over-slide plane (21) which runs obliquely relative to the rail edge and the inclination of which causes the shallow recess (4) of the foot to be drawn onto the bearing rail (5).
  4. Protective-conductor terminal according to claim 2, characterised in that the pressure spring (6) has, between the shallow recess (4) and the position of the adjacent inner rail corner (20), an over-slide zone (8) in an over-slide plane (21) which runs obliquely relative to the rail edge and the inclination of which assists the action of drawing the shallow recess (4) of the foot (2) onto the bearing rail (5).
  5. Protective-conductor terminal according to claim 1, characterised in that recessed in lateral flanks (13) as mounting support for the pressure spring (6) in a foot (2) which is bent so that it is U-shaped in cross section there are windows (14) into which the lugs (15) of the pressure spring (6) engage whilst leaving clearance.
  6. Protective-conductor terminal according to claim 1, characterised in that the pressure spring (6) is formed of round wire which is bent over at one end and is guided back over the whole length of the spring.
  7. Protective-conductor terminal according to claim 1, characterised in that the deep recess (3) in the foot (2) as a result of shape and/or inclination of the rest (22) for the rail edge renders possible oblique mounting on a bearing rail.
EP87100194A 1986-01-23 1987-01-09 Protective-cable terminal Expired - Lifetime EP0233458B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87100194T ATE64798T1 (en) 1986-01-23 1987-01-09 EARTH TERMINAL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3602003 1986-01-23
DE3602003 1986-01-23

Publications (2)

Publication Number Publication Date
EP0233458A1 EP0233458A1 (en) 1987-08-26
EP0233458B1 true EP0233458B1 (en) 1991-06-26

Family

ID=6292480

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87100194A Expired - Lifetime EP0233458B1 (en) 1986-01-23 1987-01-09 Protective-cable terminal

Country Status (4)

Country Link
EP (1) EP0233458B1 (en)
AT (1) ATE64798T1 (en)
AU (1) AU600465B2 (en)
DE (1) DE3770949D1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2642906A1 (en) * 1989-02-06 1990-08-10 Wago Verwaltungs Gmbh BARRETTE AT BORNES
EP0444565A1 (en) * 1990-03-02 1991-09-04 Entrelec Sa Device for fixing a junction block on a symmetrical profile support
US5334054A (en) * 1992-02-05 1994-08-02 C. A. Weidmuller Gmbh & Co. Apparatus for mounting a conductor terminal housing on a rail
EP0751585A1 (en) 1995-06-28 1997-01-02 Siemens Aktiengesellschaft Shift-preventing end position clamping member for side-by-side terminal blocks
DE19708912C1 (en) * 1997-03-05 1998-06-10 Weidmueller Interface Earthed conductor lead terminal esp in terminal block housing
EP1191643A2 (en) * 2000-09-25 2002-03-27 PHOENIX CONTACT GmbH & Co. Kg Housing for an electronic apparatus
US6471552B2 (en) 2000-01-04 2002-10-29 Entrelec S.A. Spring for securing a terminal block or the like to a rail

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4237732A1 (en) * 1992-11-09 1994-05-11 Weidmueller Interface Protective conductor terminal
FR2786941A1 (en) * 1998-12-02 2000-06-09 Patrick Bourgin Intrinsic earthing system for cabinet-mounted electrical apparatus, comprises a support, integral with the cabinet, bonded to earth, which the act of mounting connects to one apparatus terminal.
DE19960838A1 (en) * 1999-12-16 2001-07-19 Siemens Ag Protection conductor connection clamp
DE10041279C2 (en) * 2000-08-22 2002-11-21 Phoenix Contact Gmbh & Co Electrical terminal block
FR2901417B1 (en) 2006-05-22 2011-08-05 Legrand France JUNCTION BLOCK FOR ELECTRICAL CONDUCTORS
DE102013114315A1 (en) 2013-12-18 2015-06-18 Phoenix Contact Gmbh & Co. Kg Metallic protective conductor connection element and electrical terminal block
EP3391471B1 (en) * 2015-12-17 2023-03-22 TE Connectivity Germany GmbH Rail socket with improved current transmission

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1070719B (en) * 1959-12-10
DE1415557A1 (en) * 1959-03-11 1968-10-03 Weidmueller Kg C Terminal blocks for electrical lines
GB1436707A (en) * 1972-07-21 1976-05-26 Rotaflex Ltd Electrical supply installations

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2642906A1 (en) * 1989-02-06 1990-08-10 Wago Verwaltungs Gmbh BARRETTE AT BORNES
EP0444565A1 (en) * 1990-03-02 1991-09-04 Entrelec Sa Device for fixing a junction block on a symmetrical profile support
FR2659118A1 (en) * 1990-03-02 1991-09-06 Entrelec Sa DEVICE FOR FIXING A TERMINAL BLOCK ON A SYMMETRICAL SUPPORT PROFILE.
US5049094A (en) * 1990-03-02 1991-09-17 Entrelec S.A. Fixing device for fixing a terminal block on a symmetrical mounting rail
US5334054A (en) * 1992-02-05 1994-08-02 C. A. Weidmuller Gmbh & Co. Apparatus for mounting a conductor terminal housing on a rail
EP0751585A1 (en) 1995-06-28 1997-01-02 Siemens Aktiengesellschaft Shift-preventing end position clamping member for side-by-side terminal blocks
DE19708912C1 (en) * 1997-03-05 1998-06-10 Weidmueller Interface Earthed conductor lead terminal esp in terminal block housing
US6471552B2 (en) 2000-01-04 2002-10-29 Entrelec S.A. Spring for securing a terminal block or the like to a rail
EP1191643A2 (en) * 2000-09-25 2002-03-27 PHOENIX CONTACT GmbH & Co. Kg Housing for an electronic apparatus

Also Published As

Publication number Publication date
EP0233458A1 (en) 1987-08-26
AU6791087A (en) 1987-07-30
DE3770949D1 (en) 1991-08-01
AU600465B2 (en) 1990-08-16
ATE64798T1 (en) 1991-07-15

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