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EP0052767A1 - Screwless terminal - Google Patents

Screwless terminal Download PDF

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Publication number
EP0052767A1
EP0052767A1 EP81108650A EP81108650A EP0052767A1 EP 0052767 A1 EP0052767 A1 EP 0052767A1 EP 81108650 A EP81108650 A EP 81108650A EP 81108650 A EP81108650 A EP 81108650A EP 0052767 A1 EP0052767 A1 EP 0052767A1
Authority
EP
European Patent Office
Prior art keywords
spring
housing
clamp
clamping
clamp according
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.)
Ceased
Application number
EP81108650A
Other languages
German (de)
French (fr)
Inventor
Werner Dipl.-Ing. Harbauer
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0052767A1 publication Critical patent/EP0052767A1/en
Ceased legal-status Critical Current

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Classifications

    • 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
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
    • H01R4/4833—Sliding arrangements, e.g. sliding button
    • 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
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
    • H01R4/4835—Mechanically bistable arrangements, e.g. locked by the housing when the spring is biased
    • 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
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4811—Spring details
    • H01R4/4816—Spring details the spring shape preventing insertion of the conductor end when the spring is unbiased
    • 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
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/484—Spring housing details

Definitions

  • the invention relates to a screwless connecting or connecting terminal for electrical conductors with a clamping spring which is to be tensioned before the introduction of the conductor and which clamps the conductor after its introduction and is arranged in a housing.
  • the invention is therefore based on the object of providing a terminal which is even easier to operate, in particular when connecting for the first time, without requiring a high amount of material and assembly for the terminal.
  • This is achieved in a simple manner with a clamp of the above-mentioned type in that there is an operationally clamping force-free clamping element which is supported on the housing on the one hand and which holds the clamping spring on the other hand and which is in two defined end positions and from the outside of the housing at least into the relaxed position is adjustable.
  • This makes it possible to deliver the terminal in the open state ex works, so that the customer does not need to use force when connecting the conductor.
  • the assembly of the conductor is therefore relatively simple.
  • a slidably mounted wedge has proven to be a simple and inexpensive tensioning element.
  • the use of the wedge opens up the possibility of combining the triggering of the tensioning element with the insertion process of the conductor, namely in that an attachment of the wedge when the conductor is inserted can be brought into contact with the insulation of the conductor in the relaxing sense of the clamping spring.
  • the direction of release of the tensioning element and the direction of insertion of the conductor thus coincide.
  • the tensioning element is a plunger which can be locked longitudinally in the spring's springing direction in two end positions.
  • the locking of the plunger can be achieved without considerable effort if the plunger is provided with a locking lug, which, after the plunger has been rotated, is in the tensioned state of the clamping spring and the open state of the clamp an undercut housing is engaged.
  • the plunger is provided with a screwdriver slot, the slot position of which indicates the state of the clamp.
  • the clamping element can be locked in the open state of the clamp.
  • the clamping element is in operative connection with several clamp springs.
  • a known spring clip 3 is housed in an opening 1 of a device housing 2, which can be, for example, the housing of an electromagnetic switching device.
  • the connecting conductor 4 of the spring terminal 3 can, for example, form the fixed contact piece of an electromagnetic switching device.
  • the hairpin-shaped curved leaf spring 5 of the spring clip 3 engages with a breakthrough 6, the bent end 7 of the terminal block 4 and at the same time provides the entry opening for the stripped end 8 of the conductor 9.
  • a wedge 10 is slidably guided, which is shown in FIG 1 apparent position causes tensioning of the leaf spring 5.
  • a rounded recess 11 serves to lock the wedge in the position shown in FIG. 1 in that a corresponding bulge of the leaf spring 5 engages in the recess 11.
  • An angular extension 12 on the wedge 10 serves to push the wedge back into the position indicated by the broken line in order to relax the leaf spring 5 in such a way that the stripped end 8 is clamped in the opening 6.
  • the wedge can be inserted automatically when the conductor 9 is inserted through the edge of the insulation of the conductor.
  • a slot 13 in the wedge 10 allows the wedge to be moved through the passage 14 by means of a screwdriver or by a machine when manufacturing the device. To release the clamp, it is only necessary, for example, to insert a screwdriver into the passage 14 and to press the wedge downwards in the direction indicated by the arrow 15, so that the opening 6 is exposed and the stripped end 8 can be pulled out of the opening. It is therefore not necessary to move the wedge to loosen or connect individual wires.
  • the embodiment shown in FIG. 2 uses a plunger 16 as the tensioning member.
  • the plunger 16 is guided in the opening 1 so as to be longitudinally displaceable.
  • a head start 17 in the housing 2 cooperates with an extension 18 of the plunger 16, in the position shown in FIG. 2, ie with the leaf spring 5 tensioned, so that the conductor 9 with the stripped end 8 can be inserted.
  • the direction of insertion is indicated by arrow 19.
  • the plunger 16 is provided in the form of a screw with a screwdriver slot 20, so that the locking between the extension 18 and the projection 17 can be released by lightly pressing the plunger and rotating it by means of the screwdriver and the plunger relieves the leaf spring 5 in such a way that after insertion the conductor 9 is clamped in the usual way.
  • a latching recess 21 is made, into which the pin-shaped extension 18 engages in the position shown in FIG. 2, ie when the clamp is open. This position securing ensures that the clamp is not adjusted when the device is being transported.
  • Fig. 4 indicates that current flow is enabled, i.e. the clamp is closed and Fig. 5, in which the longitudinal direction of the screwdriver slot 20 is transverse to the longitudinal direction of the conductor, indicates that the clamp must still be closed.
  • FIG. 6 A variant of the embodiment according to FIG. 2 can be seen from FIG. 6.
  • the plunger 16 is guided here in a longitudinally displaceable manner in a housing recess 22.
  • the wall 23 is formed by the formation 24 as an elastically resilient part and serves as a locking projection for the nose 25 on the plunger 16.
  • the wall 23 has an extension 26 engaging around the plunger 16, which ends in an actuation opening 27.
  • the plunger is moved in the direction of arrow 29, for example with a screwdriver, until it engages automatically with the wall 23 for tensioning the leaf spring 5.
  • the clamp according to the invention enables the use of commercially available clamp springs and is only a clamp that can be delivered in the open state by a practically free, simple additional part that does not have to absorb clamping pressures during operation.

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  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Saccharide Compounds (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Abstract

A screwless terminal has a more or less hairpin-shaped bent terminal spring (leaf spring 5) which can be held in tension, ie. in the open state, by means of a tensioning device (16), having no clamping force when in use, which on the one hand is supported on the housing (2) and on the other hand holds the terminal spring (5) tensioned. In this case, the tensioning device (16) is adjustable in two defined end positions, and from the outside of the housing (2), by engagement in the slot (20), at least in the unstressed position. The connecting terminal according to the invention is advantageously applicable particularly for units with a large number of connecting terminals, since this terminal can be delivered in the opened state so that, from the clients' point of view, it is merely necessary to release the terminal spring, to activate the clamping process. <IMAGE>

Description

Die Erfindung bezieht sich auf eine schraubenlose Anschluß- oder Verbindungsklemme für elektrische Leiter mit einer vor dem Einführen des Leiters zu spannenden und nach dessen Einführen den Leiter klemmenden, in einem Gehäuse angeordneten Klemmfeder.The invention relates to a screwless connecting or connecting terminal for electrical conductors with a clamping spring which is to be tensioned before the introduction of the conductor and which clamps the conductor after its introduction and is arranged in a housing.

Bei einer bekannten Klemme der obengenannten Art ist es notwendig, entweder den Draht selbst mit relativ hohem Druck in die Federklemme einzuschieben (DE-AS 12 51 399, oder aber durch Ansetzen eines Werkzeuges, beispielsweise eines Schraubenziehers, unter relativ hohem Druck zu öffnen, um den Leiter einführen zu können . Dies ist in jedem Fall notwendig, wenn feindrähtige Leiter bzw. Litzen in der Klemme geklemmt werden müssen. Es sind auch Klemmen bekannt (DE-AS 20 62 158), wo mit gesonderten Stößeln mit relativ hohem Druck ein Öffnen der Klemme zum Einschieben der Leiter bewirkt werden kann. All diese Klemmen sind jedoch bei elektrischen Schaltgeräten nur mit Schwierigkeiten verwendbar; denn an schlecht zugänglicher Stelle, beispielsweise beim Anschließen von Hilfsschützen, die in großer Anzahl auf einer Tragplatte angeordnet sind, ist es praktisch nicht möglich, gleichzeitig einen relativ hohen Druck zum Öffnen der Federklemme aufzubringen und das Einführen des Drahtes an der schlecht zugänglichen Stelle durchzuführen. Der erhebliche Kraftaufwand führt zumindest bei Neuinstallation von Geräten zu Ermüdungserscheinungen des Montagepersonals.In a known clamp of the type mentioned above, it is necessary either to insert the wire itself with relatively high pressure into the spring clamp (DE-AS 12 51 399, or to open it by applying a tool, for example a screwdriver, under relatively high pressure in order to In any case, this is necessary if finely stranded conductors or strands have to be clamped in the clamp.Clamps are also known (DE-AS 20 62 158), where opening by means of separate plungers with relatively high pressure The clamp can be used to insert the conductors, but all these clamps can only be used with difficulty with electrical switchgear, because it is practically impossible in a difficult to access location, for example when connecting auxiliary contactors that are arranged in large numbers on a support plate to simultaneously apply a relatively high pressure to open the spring clip and insert the wire at the Schlec ht accessible place. The considerable expenditure of force leads to signs of fatigue of the assembly personnel, at least when new devices are installed.

Der Erfindung liegt somit die Aufgabe zugrunde, eine Klemme zu schaffen, die noch einfacher insbesondere beim Erstanschluß zu betätigen ist, ohne hierzu einen hohen Material- und Montageaufwand für die Klemme zu benötigen. Dies wird auf einfache Weise bei einer Klemme der obengenannten Art dadurch erreicht, daß ein sich einerseits am Gehäuse abstützendes und andererseits die Klemmfeder gespannt haltendes, betriebsmäßig klemmkraftfreies Spannorgan vorhanden ist, das in zwei definierte Endlagen und von der Außenseite des Gehäuses zumindest in die entspannte Lage verstellbar ist. Hierdurch ist es möglich, die Klemme ab Werk im geöffneten Zustand zu liefern, so daß der Kraftaufwand beim Anschließen der Leiter durch den Kunden entfällt. Die Montage des Leiters ist somit relativ einfach. Der Leiter muß lediglich eingelegt werden und die Klemme gelöst werden, d.h. es ist keine Koordinierung zwischen dem Aufbringen des Druckes und dem gleichzeitigen Einschieben des Leiters notwendig. Als einfaches und kostengünstiges Spannorgan hat sich ein verschiebbar gelagerter Keil erwiesen. Die Verwendung des Keils eröffnet die Möglichkeit, das Auslösen des Spannorganes mit dem Einschiebvorgang des Leiters zu kombinieren, nämlich dadurch, daß ein Ansatz des Keiles beim Einschieben des Leiters mit der Isolation des Leiters im entspannenden Sinne der Klemmfeder in Berührung bringbar ist. Lösungsrichtung des Spannorgans und Einschubrichtung des Leiters fallen somit zusammen. Hier ist jedoch auf gewisse Steifigkeit der Isolation zu achten. Bei Geräten, bei denen Lösungsrichtung und Einschubrichtung etwa in einem Winkel von 90° liegen sollen, ist es vorteilhaft, wenn das Spannorgan ein in Federungsrichtung der Feder längsverschieblich in zwei Endlagen arretierbarer Stößel ist. Ohne erheblichen Aufwand läßt sich die Arretierung des Stößels erreichen, wenn der Stößel mit einem Arretierungsansatz versehen ist, der nach Verdrehen des Stößels im gespannten Zustand der Klemmfeder und geöffneten Zustand der Klemme mit einer Gehäusehinterschneidung in Eingriff steht. Um den Öffnungszustand der Klemme von außen auf einfache Weise erkennen zu können und auch eine einfache Verstellung zu ermöglichen, und zwar mit bisher üblichen Werkzeugen, ist es vorteilhaft, wenn der Stößel mit einem Schraubendreherschlitz versehen ist, dessen Schlitzstellung den Zustand der Klemme anzeigt. Um sicherzustellen, daß die Klemme beim Transport vom Herstellerwerk zum Kunden im offenen Zustand verbleibt, ist es vorteilhaft, wenn das Spannorgan im geöffneten Zustand der Klemme verrastbar ist. Um die Anschlußtechnik an Geräten mit mehreren Klemmen weiterhin zu rationalisieren, kann es vorteilhaft sein, wenn das Spannorgan mit mehreren Klemmfedern in Wirkverbindung steht.The invention is therefore based on the object of providing a terminal which is even easier to operate, in particular when connecting for the first time, without requiring a high amount of material and assembly for the terminal. This is achieved in a simple manner with a clamp of the above-mentioned type in that there is an operationally clamping force-free clamping element which is supported on the housing on the one hand and which holds the clamping spring on the other hand and which is in two defined end positions and from the outside of the housing at least into the relaxed position is adjustable. This makes it possible to deliver the terminal in the open state ex works, so that the customer does not need to use force when connecting the conductor. The assembly of the conductor is therefore relatively simple. The conductor only has to be inserted and the clamp loosened, ie no coordination between the application of the pressure and the simultaneous insertion of the conductor is necessary. A slidably mounted wedge has proven to be a simple and inexpensive tensioning element. The use of the wedge opens up the possibility of combining the triggering of the tensioning element with the insertion process of the conductor, namely in that an attachment of the wedge when the conductor is inserted can be brought into contact with the insulation of the conductor in the relaxing sense of the clamping spring. The direction of release of the tensioning element and the direction of insertion of the conductor thus coincide. Here, however, attention must be paid to the stiffness of the insulation. In the case of devices in which the direction of release and the direction of insertion are to lie approximately at an angle of 90 °, it is advantageous if the tensioning element is a plunger which can be locked longitudinally in the spring's springing direction in two end positions. The locking of the plunger can be achieved without considerable effort if the plunger is provided with a locking lug, which, after the plunger has been rotated, is in the tensioned state of the clamping spring and the open state of the clamp an undercut housing is engaged. In order to be able to recognize the opening state of the clamp from the outside in a simple manner and also to enable simple adjustment, using conventional tools, it is advantageous if the plunger is provided with a screwdriver slot, the slot position of which indicates the state of the clamp. In order to ensure that the clamp remains in the open state during transport from the manufacturing plant to the customer, it is advantageous if the clamping element can be locked in the open state of the clamp. In order to further rationalize the connection technology on devices with several clamps, it can be advantageous if the clamping element is in operative connection with several clamp springs.

Anhand der Zeichnung werden Aüsführungsbeispiele gemäß der Erfindung beschrieben und die Wirkungsweise näher erläutert:With the aid of the drawing, exemplary embodiments according to the invention are described and the mode of operation is explained in more detail:

Es zeigen

  • Fig. 1 eine Schnittdarstellung durch die erfindungsgemäße Klemme unter Verwendung eines Keils,
  • Fig. 2 eine Schnittdarstellung der erfindungsgemäßen Klemme unter Verwendung eines längsverschieblich und verdrehbar gelagerten arretierbaren Stößels,
  • Fig. 3 eine Möglichkeit zur Verrastung des Stößels gemäß Fig. 2,
  • Fig. 4 und 5 die Stellungen des verdrehbaren Stößels, Fig. 4 bei geschlossener Klemme und geklemmtem Leiter und Fig. 5 bei geöffneter Klemme und eingeschobenem Leiter und
  • Fig. 6 eine Schnittdarstellung der erfindungsgemäßen Klemme unter Verwendung eines längsverschieblich geführten und elastisch verrastbaren Stößels.
Show it
  • 1 is a sectional view through the clamp according to the invention using a wedge,
  • 2 is a sectional view of the clamp according to the invention using a lockable plunger mounted in a longitudinally displaceable and rotatable manner,
  • 3 shows a possibility for locking the ram according to FIG. 2,
  • 4 and 5 the positions of the rotatable plunger, Fig. 4 with a closed clamp and clamped conductor and Fig. 5 with an open clamp and inserted conductor and
  • Fig. 6 is a sectional view of the clamp according to the invention using a longitudinally displaceable and elastically lockable plunger.

In Fig. 1 ist in einer Öffnung 1 eines Gerätegehäuses 2, das beispielsweise das Gehäuse eines elektromagnetischen Schaltgerätes sein kann, eine an sich bekannte Federklemme 3 untergebracht. Der Anschlußleiter 4 der Federklemme 3 kann beispielsweise das feste Kontaktstück eines elektromagnetischen Schaltgerätes bilden. Die haarnadelförmig gebogene Blattfeder 5 der Federklemme 3 übergreift mit einem Durchbruch 6 das abgebogene Ende 7 der Anschlußleiste 4 und bietet gleichzeitig die Eintrittsöffnung für das abisolierte Ende 8 des Leiters 9. In der Öffnung 1 ist ein Keil 10 verschiebbar geführt, der in der aus Fig. 1 ersichtlichen Stellung ein Spannen der Blattfeder 5 bewirkt. Eine gerundete Aussparung 11 dient der Verrastung des Keiles in der aus Fig. 1 ersichtlichen Stellung dadurch, daß eine entsprechende Ausbauchung der Blattfeder 5 in die Aussparung 11 eingreift. Ein Winkelansatz 12 am Keil 10 dient zum Zurückschieben des Keiles in die gestrichelt angedeutete Lage, um die Blattfeder 5 derart zu entspannen, daß das abisolierte Ende 8 im Durchbruch 6 geklemmt wird. Das Einschieben des Keiles kann beim Einschieben des Leiters 9 automatisch durch die Kante der Isolation des Leiters erfolgen. Ein Schlitz 13 im Keil 10 ermöglicht durch den Durchtritt 14 die Verschiebung des Keiles mittels eines Schraubenziehers oder durch eine Maschine beim Herstellen des Gerätes. Zum Lösen der Klemme ist es lediglich erforderlich, beispielsweise einen Schraubenzieher in den Durchtritt 14 einzuführen und den Keil in durch den Pfeil 15 angedeuteter Richtung nach unten zu drücken, so daß der Durchbruch 6 freigelegt und das abisolierte Ende 8 aus dem Durchbruch herausgezogen werden kann. Es ist demnach nicht erforderlich, zum Lösen oder Anschließen einzelner Drähte den Keil zu verschieben.In Fig. 1, a known spring clip 3 is housed in an opening 1 of a device housing 2, which can be, for example, the housing of an electromagnetic switching device. The connecting conductor 4 of the spring terminal 3 can, for example, form the fixed contact piece of an electromagnetic switching device. The hairpin-shaped curved leaf spring 5 of the spring clip 3 engages with a breakthrough 6, the bent end 7 of the terminal block 4 and at the same time provides the entry opening for the stripped end 8 of the conductor 9. In the opening 1, a wedge 10 is slidably guided, which is shown in FIG 1 apparent position causes tensioning of the leaf spring 5. A rounded recess 11 serves to lock the wedge in the position shown in FIG. 1 in that a corresponding bulge of the leaf spring 5 engages in the recess 11. An angular extension 12 on the wedge 10 serves to push the wedge back into the position indicated by the broken line in order to relax the leaf spring 5 in such a way that the stripped end 8 is clamped in the opening 6. The wedge can be inserted automatically when the conductor 9 is inserted through the edge of the insulation of the conductor. A slot 13 in the wedge 10 allows the wedge to be moved through the passage 14 by means of a screwdriver or by a machine when manufacturing the device. To release the clamp, it is only necessary, for example, to insert a screwdriver into the passage 14 and to press the wedge downwards in the direction indicated by the arrow 15, so that the opening 6 is exposed and the stripped end 8 can be pulled out of the opening. It is therefore not necessary to move the wedge to loosen or connect individual wires.

Die in Fig. 2 dargestellte Ausführungsform benutzt als Spannorgan einen Stößel 16. Der Stößel 16 ist in der Öffnung 1 längsverschieblich geführt. Ein Vorsprung 17 im Gehäuse 2 arbeitet mit einem Fortsatz 18 des Stößels 16 zusammen, und zwar in der aus Fig. 2 ersichtlichen Stellung, d.h. bei gespannter Blattfeder 5, so daß der Leiter 9 mit dem abisolierten Ende 8 eingeführt werden kann. Die Einführungsrichtung ist durch Pfeil 19 angedeutet. Der Stößel 16 ist in Form einer Schraube mit einem Schraubendreherschlitz 20 ausgestattet, so daß durch leichtes Andrücken des Stößels und Verdrehen desselben mittels des Schraubendrehers die Arretierung zwischen Fortsatz 18 und Vorsprung 17 aufgehoben werden kann und der Stößel die Blattfeder 5 derart entlastet, daß nach Einführen des Leiters 9 eine Klemmung in der üblichen Weise erreicht wird. Im Vorsprung 17 ist - wie Fig. 3 zeigt - eine Rastausnehmung 21 eingebracht, in die der stiftförmige Fortsatz 18 in der aus Fig. 2 ersichtlichen Lage, d.h. bei geöffneter Klemme, einrastet. Diese Lagesicherung stellt sicher, daß beim Transport des Gerätes keine Verstellung der Klemme erfolgt.The embodiment shown in FIG. 2 uses a plunger 16 as the tensioning member. The plunger 16 is guided in the opening 1 so as to be longitudinally displaceable. A head start 17 in the housing 2 cooperates with an extension 18 of the plunger 16, in the position shown in FIG. 2, ie with the leaf spring 5 tensioned, so that the conductor 9 with the stripped end 8 can be inserted. The direction of insertion is indicated by arrow 19. The plunger 16 is provided in the form of a screw with a screwdriver slot 20, so that the locking between the extension 18 and the projection 17 can be released by lightly pressing the plunger and rotating it by means of the screwdriver and the plunger relieves the leaf spring 5 in such a way that after insertion the conductor 9 is clamped in the usual way. In the projection 17, as shown in FIG. 3, a latching recess 21 is made, into which the pin-shaped extension 18 engages in the position shown in FIG. 2, ie when the clamp is open. This position securing ensures that the clamp is not adjusted when the device is being transported.

Aus den Fig. 4 und 5 ist die Lage des Schraubendreherschlitzes 20 zur Längsrichtung des Leiters, d.h. zur Stromflußrichtung, ersichtlich. Die Fig. 4 deutet an, daß der Stromfluß freigegeben ist, d.h. die Klemme ist geschlossen und Fig. 5, bei der die Längsrichtung des Schraubendreherschlitzes 20 quer zur Leiterlängsrichtung liegt, deutet an, die Klemme muß noch geschlossen werden.4 and 5, the position of the screwdriver slot 20 to the longitudinal direction of the conductor, i.e. to the direction of current flow. Fig. 4 indicates that current flow is enabled, i.e. the clamp is closed and Fig. 5, in which the longitudinal direction of the screwdriver slot 20 is transverse to the longitudinal direction of the conductor, indicates that the clamp must still be closed.

Aus Fig. 6 ist eine Variante der Ausführungsform nach Fig. 2 zu ersehen. Der Stößel 16 ist hier längsverschieblich in einer Gehäuseausnehmung 22 geführt. Die Wand 23 ist durch die Ausformung 24 als elastisch nachgiebiges Teil ausgebildet und dient als Rastvorsprung für die Nase 25 am Stößel 16. Die Wand 23 besitzt einen den Stößel 16 umgreifenden Ansatz 26, der in einer Betätigungsöffnung 27 endet.A variant of the embodiment according to FIG. 2 can be seen from FIG. 6. The plunger 16 is guided here in a longitudinally displaceable manner in a housing recess 22. The wall 23 is formed by the formation 24 as an elastically resilient part and serves as a locking projection for the nose 25 on the plunger 16. The wall 23 has an extension 26 engaging around the plunger 16, which ends in an actuation opening 27.

Durch Niederdrücken des Ansatzes 26 in Richtung des Pfeiles 28 wird die Wand 23 verschwenkt und die Verrastung aufgehoben, so daß sich die Blattfeder 5 zum Klemmen des eingeschobenen Leiters 9 teilweise entspannen kann.By pressing the extension 26 in the direction of the arrow 28, the wall 23 is pivoted and the latching is released, so that the leaf spring 5 can partially relax for clamping the inserted conductor 9.

Zum Lösen der Klemme oder zur Vorbereitung auf die Lieferung wird der Stößel in Richtung des Pfeiles 29 beispielsweise mit einem Schraubendreher bis zur selbsttätigen Verrastung mit der Wand 23 zum Spannen der Blattfeder 5 verschoben.To release the clamp or to prepare for delivery, the plunger is moved in the direction of arrow 29, for example with a screwdriver, until it engages automatically with the wall 23 for tensioning the leaf spring 5.

Die erfindungsgemäße Klemme ermöglicht die Verwendung handelsüblicher Klemmfedern und wird lediglich durch ein praktisch kostenloses, einfaches Zusatzteil, das keine Klemmdrücke während des Betriebs aufnehmen muß, zu einer Klemme, die im geöffneten Zustand geliefert werden kann.The clamp according to the invention enables the use of commercially available clamp springs and is only a clamp that can be delivered in the open state by a practically free, simple additional part that does not have to absorb clamping pressures during operation.

Claims (10)

1. Schraubenlose Anschluß- oder Verbindungsklemme für elektrische Leiter mit einer vor dem Einführen des Leiters zu spannenden und nach dessen Einführen den Leiter klemmenden, in einem Gehäuse angeordneten Klemmfeder, dadurch gekennzeichnet , daß ein sich einerseits am Gehäuse (2) abstützendes und andererseits die Klemmfeder (Blattfeder 5) gespannt haltendes, betriebsmäßig klemmkraftfreies Spannorgan (10, 16) vorhanden ist, das in zwei definierte Endlagen und von der Außenseite (14) des Gehäuses (2) zumindest in die entspannte Lage verstellbar ist.1. Screwless connecting or connecting terminal for electrical conductors with a clamping spring which is to be tensioned before the introduction of the conductor and which clamps the conductor after it has been inserted, arranged in a housing, characterized in that on the one hand the housing (2) is supported and on the other hand the clamping spring (Leaf spring 5) tension-holding, operationally clamping force-free tensioning member (10, 16) is present, which is adjustable in two defined end positions and from the outside (14) of the housing (2) at least in the relaxed position. 2. Klemme nach Anspruch 1, dadurch gekennzeichnet , daß das Spannorgan ein verschiebbar gelagerter Keil (10) ist.2. Clamp according to claim 1, characterized in that the clamping member is a slidably mounted wedge (10). 3. Klemme nach Anspruch 2, dadurch gekennzeichnet , daß ein Winkelansatz (12) des Keiles (10) beim Einschieben des Leiters (9) mit der Isolation des Leiters im entspannenden Sinne der Klemmfeder (Blattfeder 5) in Berührung bringbar ist.3. Clamp according to claim 2, characterized in that an angular approach (12) of the wedge (10) when inserting the conductor (9) with the insulation of the conductor in the relaxing sense of the clamping spring (leaf spring 5) can be brought into contact. 4. Klemme nach Anspruch 1, dadurch gekennzeichnet, daß das Spannorgan ein in Federungsrichtung der Feder (Blattfeder 5) längsverschieblich in zwei Endlagen arretierbarer Stößel (16) ist.4. Clamp according to claim 1, characterized in that the clamping member is a in the spring direction of the spring (leaf spring 5) longitudinally displaceable in two end positions lockable plunger (16). 5. Klemme nach Anspruch 4, dadurch gekennzeichnet , daß der Stößel mit einem Arretierungsansatz (Vorsprung 17) versehen ist, der nach Verdrehen des Stößels (16) im gespannten Zustand der Klemmfeder (Blattfeder 5) und geöffneten Zustand der Klemme mit einer Gehäusehinterschneidung in Eingriff steht.5. Clamp according to claim 4, characterized in that the plunger is provided with a locking projection (projection 17) which, after turning the plunger (16) in the tensioned state of the clamping spring (leaf spring 5) and the opened state of the clamp, engages with an undercut in the housing stands. 6. Klemme nach Anspruch 4 oder 5, dadurch gekennzeichnet , daß der Stößel (16) mit einem Schraubendreherschlitz (20) versehen ist, dessen Schlitzstellung den Zustand der Klemme anzeigt.6. Clamp according to claim 4 or 5, characterized in that the plunger (16) is provided with a screwdriver slot (20), the slot position of which indicates the state of the clamp. 7. Klemme nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet , daß das Spannorgan (10, 16) im geöffneten Zustand der Klemme verrastbar ist.7. Clamp according to one of the preceding claims, characterized in that the clamping member (10, 16) can be locked in the open state of the clamp. 8. Klemme nach Anspruch 7, dadurch gekennzeichnet , daß zur Verrastung ein quer zur Verschiebungsrichtung des Spannorgans (16) elastisch verschiebbarer Gehäusevorsprung (Wand 23) dient.8. Clamp according to claim 7, characterized in that for locking a transversely to the direction of displacement of the clamping member (16) elastically displaceable housing projection (wall 23) is used. 9. Klemme nach Anspruch 8, dadurch . gekennzeichnet, daß ein Ansatz (26) am Gehäusevorsprung (Wand 23) einen Spannstößel (16) umgreift und in einer Betätigungsöffnung (27) des Gehäuses (2) endet.9. Clamp according to claim 8, characterized. characterized in that an extension (26) on the housing projection (wall 23) engages around a tensioning plunger (16) and ends in an actuating opening (27) of the housing (2). 10. Klemme nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Spannorgan (10, 16) mit mehreren Klemmfedern (Blattfeder 5) in Wirkverbindung steht.10. Clamp according to one of the preceding claims, characterized in that the tensioning element (10, 16) is in operative connection with a plurality of clamping springs (leaf spring 5).
EP81108650A 1980-11-24 1981-10-21 Screwless terminal Ceased EP0052767A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3044134A DE3044134C2 (en) 1980-11-24 1980-11-24 Screwless clamp
DE3044134 1980-11-24

Publications (1)

Publication Number Publication Date
EP0052767A1 true EP0052767A1 (en) 1982-06-02

Family

ID=6117393

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81108650A Ceased EP0052767A1 (en) 1980-11-24 1981-10-21 Screwless terminal

Country Status (9)

Country Link
EP (1) EP0052767A1 (en)
JP (1) JPS57118381A (en)
BR (1) BR8107596A (en)
DE (1) DE3044134C2 (en)
DK (1) DK517581A (en)
ES (1) ES8301067A1 (en)
FI (1) FI813376L (en)
NO (1) NO813825L (en)
ZA (1) ZA818109B (en)

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GB2127627A (en) * 1982-08-18 1984-04-11 Lucas Ind Plc Electrical component
EP0108235A1 (en) * 1982-10-13 1984-05-16 Rafi GmbH &amp; Co Elektrotechnische Spezialfabrik Device for the screwless connection of two parts
FR2580432A1 (en) * 1985-04-16 1986-10-17 Waco Verwaltungs Gmbh CONNECTING CONNECTOR FOR ELECTRICAL CONDUCTORS
FR2580431A1 (en) * 1985-04-16 1986-10-17 Waco Verwaltungs Gmbh TERMINAL FOR CONNECTING ELECTRICAL CONDUCTORS
WO1993003512A1 (en) * 1991-07-26 1993-02-18 Alwin Stoll Kabelkonfektion Ag Spindle gudgeon mechanism in locking and securing devices
EP0632529A2 (en) * 1993-06-04 1995-01-04 The Whitaker Corporation Spring clamp connector
DE19823648C1 (en) * 1998-05-27 1999-11-04 Metz Albert Ria Electronic Connector, esp. for circuit boards, developed to be simple to operate, to be of simple construction and to be held stable in the open position
WO2000021160A1 (en) * 1998-10-02 2000-04-13 Aeg Niederspannungstechnik Gmbh & Co. Kg Spring clamp
WO2001047068A1 (en) * 1999-12-21 2001-06-28 Siemens Aktiengesellschaft Screwless terminal
GB2500521A (en) * 2009-09-15 2013-09-25 Fisher Rosemount Systems Inc Terminal wire block with two different clamping means

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DE3237832C2 (en) * 1982-10-12 1986-01-30 Siemens AG, 1000 Berlin und 8000 München Screwless terminal or connector for electrical conductors
DE3302372A1 (en) * 1983-01-25 1984-07-26 WAGO Verwaltungsgesellschaft mbH, 4950 Minden Screwless terminal
DE9403137U1 (en) * 1994-02-25 1995-06-22 F. Wieland Elektrische Industrie Gmbh, 96052 Bamberg Spring clip for an electrical conductor
DE19529028B4 (en) * 1995-07-28 2008-01-24 Wago Verwaltungsgesellschaft Mbh Electric spring-loaded terminal
DE19825629B4 (en) * 1998-06-08 2007-06-06 Siemens Ag Spring terminal
DE10103187B4 (en) * 2001-01-24 2010-11-18 Wago Verwaltungsgesellschaft Mbh Electrical terminal
ITMI20060373A1 (en) * 2006-03-02 2007-09-03 Ilme Spa ELECTRIC MULTIPOLAR CONNECTOR WITH SPRING CONTACTS
PL2001086T3 (en) 2007-06-08 2010-09-30 Landis & Gyr Ag Screwless connecting terminal
DE102007050683B4 (en) * 2007-10-22 2009-09-03 Wago Verwaltungsgesellschaft Mbh Conductor terminal
DE102008039232B4 (en) * 2008-08-22 2019-02-28 Phoenix Contact Gmbh & Co. Kg Electrical connection terminal
DE102015117387A1 (en) 2015-10-13 2017-04-13 Harting Electric Gmbh & Co. Kg Connectors
DE102017129407B4 (en) * 2017-12-11 2019-11-28 Phoenix Contact Gmbh & Co. Kg Electrical connection terminal

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DE1984159U (en) * 1967-12-07 1968-04-25 Friedrich Merk Telefonbau G M CLAMPING DEVICE FOR THE CONNECTION OF ELECTRICAL CABLES.
DE2037958B2 (en) * 1969-07-31 1979-01-04 Bunker Ramo Corp., Oak Brook, Ill. (V.St.A.) Connectors for flat circuit carriers
AT353876B (en) * 1975-12-15 1979-12-10 Electro Terminal Gmbh SCREWLESS CLAMP INSERTED IN A HOUSING

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DE1119940B (en) * 1960-09-21 1961-12-21 Seger & Angermeyer Desco Werk Screwless connection terminal with spring-loaded pressure contact
DE2023170B2 (en) * 1970-05-12 1972-03-30 Krone Gmbh, 1000 Berlin DETACHABLE ELECTRIC CLAMP CONNECTION
DE2706482C2 (en) * 1977-02-16 1985-02-21 Wago-Kontakttechnik Gmbh, 4950 Minden Screwless connection and / or connecting clamp

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Publication number Priority date Publication date Assignee Title
DE1984159U (en) * 1967-12-07 1968-04-25 Friedrich Merk Telefonbau G M CLAMPING DEVICE FOR THE CONNECTION OF ELECTRICAL CABLES.
DE2037958B2 (en) * 1969-07-31 1979-01-04 Bunker Ramo Corp., Oak Brook, Ill. (V.St.A.) Connectors for flat circuit carriers
AT353876B (en) * 1975-12-15 1979-12-10 Electro Terminal Gmbh SCREWLESS CLAMP INSERTED IN A HOUSING

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2127627A (en) * 1982-08-18 1984-04-11 Lucas Ind Plc Electrical component
EP0108235A1 (en) * 1982-10-13 1984-05-16 Rafi GmbH &amp; Co Elektrotechnische Spezialfabrik Device for the screwless connection of two parts
FR2580432A1 (en) * 1985-04-16 1986-10-17 Waco Verwaltungs Gmbh CONNECTING CONNECTOR FOR ELECTRICAL CONDUCTORS
FR2580431A1 (en) * 1985-04-16 1986-10-17 Waco Verwaltungs Gmbh TERMINAL FOR CONNECTING ELECTRICAL CONDUCTORS
WO1993003512A1 (en) * 1991-07-26 1993-02-18 Alwin Stoll Kabelkonfektion Ag Spindle gudgeon mechanism in locking and securing devices
CH684355A5 (en) * 1991-07-26 1994-08-31 Stoll Alwin Kabelkonfektion Ag Turning bolt mechanism in locking and fastening devices.
US5679021A (en) * 1993-06-04 1997-10-21 The Whitaker Corporation Spring clamp actuator
EP0632529A3 (en) * 1993-06-04 1995-12-20 Whitaker Corp Spring clamp connector.
EP0632529A2 (en) * 1993-06-04 1995-01-04 The Whitaker Corporation Spring clamp connector
DE19823648C1 (en) * 1998-05-27 1999-11-04 Metz Albert Ria Electronic Connector, esp. for circuit boards, developed to be simple to operate, to be of simple construction and to be held stable in the open position
WO2000021160A1 (en) * 1998-10-02 2000-04-13 Aeg Niederspannungstechnik Gmbh & Co. Kg Spring clamp
AU753112B2 (en) * 1998-10-02 2002-10-10 Aeg Niederspannungstechnik Gmbh & Co. Kg Spring clamp
WO2001047068A1 (en) * 1999-12-21 2001-06-28 Siemens Aktiengesellschaft Screwless terminal
GB2500521A (en) * 2009-09-15 2013-09-25 Fisher Rosemount Systems Inc Terminal wire block with two different clamping means
GB2500521B (en) * 2009-09-15 2014-03-12 Fisher Rosemount Systems Inc Terminal wire block with spring and screw clamping
GB2506802A (en) * 2009-09-15 2014-04-09 Fisher Rosemount Systems Inc Terminal wire block with spring and screw clamps
GB2506802B (en) * 2009-09-15 2014-05-21 Fisher Rosemount Systems Inc Terminal wire block with spring and screw clamps

Also Published As

Publication number Publication date
ES507367A0 (en) 1982-11-01
JPS57118381A (en) 1982-07-23
DE3044134A1 (en) 1982-06-03
BR8107596A (en) 1982-08-17
ES8301067A1 (en) 1982-11-01
ZA818109B (en) 1982-10-27
DK517581A (en) 1982-05-25
NO813825L (en) 1982-05-25
FI813376L (en) 1982-05-25
DE3044134C2 (en) 1983-09-01

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