EP0735614A2 - Electrical connector with a clamping screw - Google Patents

Electrical connector with a clamping screw Download PDF

Info

Publication number
EP0735614A2
EP0735614A2 EP96103713A EP96103713A EP0735614A2 EP 0735614 A2 EP0735614 A2 EP 0735614A2 EP 96103713 A EP96103713 A EP 96103713A EP 96103713 A EP96103713 A EP 96103713A EP 0735614 A2 EP0735614 A2 EP 0735614A2
Authority
EP
European Patent Office
Prior art keywords
screw
pressure piece
cage
clamping screw
clamping
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.)
Granted
Application number
EP96103713A
Other languages
German (de)
French (fr)
Other versions
EP0735614A3 (en
EP0735614B1 (en
Inventor
Werner Radde
Klaus Endres
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.)
Weidmueller Interface GmbH and Co KG
Original Assignee
Weidmueller Interface GmbH and Co KG
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 Weidmueller Interface GmbH and Co KG filed Critical Weidmueller Interface GmbH and Co KG
Publication of EP0735614A2 publication Critical patent/EP0735614A2/en
Publication of EP0735614A3 publication Critical patent/EP0735614A3/en
Application granted granted Critical
Publication of EP0735614B1 publication Critical patent/EP0735614B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • H01R4/363—Conductive members located under tip of screw with intermediate part between tip and conductive member
    • 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
    • H01R9/2458—Electrical interconnections between terminal blocks

Definitions

  • the invention relates to a screw terminal for electrical conductors, with a cage and a rotatably arranged in a threaded portion of the cage clamping screw and with a movably arranged in the cage pressure piece, which is movable by means of the clamping screw against a contact piece that is inclined to the clamping screw axis in one of the conductor receiving space defined in the cage is arranged.
  • the basic structure of such screw terminals is known (DE 6 942 001 U1; DE 4 400 571 A1).
  • the clamping screws are rotatably held and supported in the cage. They are in a form-fitting thread engagement with the pressure piece that can be moved in the cage.
  • This basic structure leads to a complicated construction which is expensive to manufacture, both in the area between the rotary bearing between the screw and the cage, and in particular also in the area of the form-fitting thread engagement between the pressure piece and the clamping screw.
  • the assembly of the affected parts is also complex and requires mechanical use in any case.
  • a screw terminal is specified, which is characterized by a clamping screw rotatably arranged in a threaded section of a screw terminal cage, the longitudinal axis of which is arranged essentially parallel to the insertion direction of a conductor which can be clamped in the screw terminal.
  • the clamping screw When turning, the clamping screw acts on a clamping element with a clamping surface and a pressure surface arranged at an angle to it, which is supported against an abutment arranged on the side of the clamping screw axis, a rotation of the clamping screw resulting in a displacement of the pressure surface of the clamping element, which results from the tilting of the clamping element is caused.
  • the clamping surface By tilting the clamping element, the clamping surface is pressed against the conductor to be clamped and this is fixed in the screw terminal as intended.
  • the clamping element can be pressed against the clamping screw by a spiral spring along the entire path and can thus be moved back into an unloaded position by the spiral spring when the screw clamp is released.
  • this screw terminal has a problem, in particular separate from a housing that changes depending on the application, that the clamping action of this screw terminal cannot meet all requirements due to the shape of the pressure piece and the force transmission by means of a tilting movement.
  • the clamping of the conductor by the pressure piece is essentially parallel to the conductor surface only for a structurally predetermined, very small diameter range of the conductors to be clamped, as a result of which a good clamping effect is generated by large contact areas between the pressure piece and the conductor.
  • the L-shaped pressure piece is predominantly subjected to bending, since due to the spatial arrangement of the clamping screw, pressure piece and conductor, a force deflection around the pivot point of the pressure piece must take place. This does indeed result in a certain elasticity of the conductor clamping reached, but there is no denying the danger of plastic deformation and therefore inadequate clamping action after repeated actuation of the screw terminal.
  • the screw terminal By supporting the additionally provided spring on parts of the cage or the busbar, the screw terminal as an assembly unit is not easy to preassemble.
  • the present invention has for its object to provide a screw terminal of the generic type, which has a very simple structural design with good functional reliability, is easy to assemble and has a safe clamping effect independent of the deformation properties and clamping position of the pressure piece within the screw terminal and conductor diameter.
  • the solution according to the invention consists essentially in that the pressure piece is linearly displaceable by rotating the clamping screw along the longitudinal axis of the clamping screw, and that the pressure piece on the free end of the clamping screw by means of a helical spring supported on the pressure piece and on the cage over the entire travel range of Pressure piece is kept pressed.
  • the construction is further simplified considerably in that the pressure piece can be an easily produced die-cast part without any processing such as thread cutting or the like.
  • this screw terminal as a self-contained, fully assembled connection element can be carried out in a very simple manner, if necessary without mechanical use and also without the use of tools at all. It is sufficient to insert the coil spring and pressure piece into the cage and screw in the clamping screw.
  • the connecting elements formed in this way can be used as desired in socket or pin strips, printed circuit board terminals, feed-through terminals and the like.
  • the longitudinal axis of the coil spring is arranged parallel to the longitudinal axis of the clamping screw, so that the coil spring is only subjected to pressure when the pressure piece is displaced by means of the clamping screw.
  • the cage is designed as a bent sheet metal part in a manner known per se.
  • the threaded section is formed by two overlapping brackets of the cage. The thread is thus advantageously self-locking.
  • the spring is kept inaccessible with respect to the conductor receiving space, so that it is excluded that a conductor which is inserted too far can contact the spring and change its position or even damage it.
  • protective ribs are provided on the pressure piece and / or on the cage, for which free spaces are provided during the relative movement between the pressure piece and the cage.
  • the screw terminal has as essential components a clamping screw 1, a cage 2 and a pressure piece 3.
  • the cage 2 is formed in the illustrated embodiment as a bent sheet metal part that an upper boundary wall 4, side walls 5 and lower, overlapping, oriented obliquely to the axis of the clamping screw 1 Has boundary walls 6.
  • the narrow side walls of the cage 2 are formed on one side adjacent to the upper boundary wall 4 by overlapping brackets 7, in which the thread 8 is located, into which the clamping screw 1 can be screwed.
  • the thread is self-locking due to the formation of the thread in overlapping brackets. Below this bracket 7, this narrow side wall is open and thereby forms the access opening to the conductor receiving space 9 defined by the cage 2.
  • the opposite narrow side wall is formed in the upper area by a bracket 10. Underneath there is an opening reaching to the lower overlapping boundary walls 6, through which a contact piece 11 can be inserted into the conductor receiving space 9 of the cage 2, which is then in Oblique to the axis of the clamping screw 1 rests on the lower overlapping boundary walls 6 of the cage 2.
  • the contact piece 11 is designed in the form of a busbar, which carries, for example, a double flat spring contact 13 on a bend 12 remaining outside the cage 2.
  • the pressure piece 3 is movably arranged in the cage. It is only held non-positively on the free end of the clamping screw 1 by a helical spring 14 which is dimensioned such that the pressure in the entire path area of the pressure piece 3 between the maximum open position (FIG. 1) and the maximum closed position (FIG. 3) is maintained.
  • the coil spring 14 is supported on the one hand on the cage 2, namely here on its bracket 10, and on the other hand on the pressure piece 3.
  • a receiving channel 15 is expediently provided in the pressure piece 3, into which the helical spring can enter.
  • the bracket 10 expediently overlaps the other end of the spring with an angled portion 16 which is approximately rounded in accordance with the spring contour.
  • the longitudinal axis of the coil spring 14 and the longitudinal axis of the clamping screw 1 are offset from one another.
  • the longitudinal axis of the helical spring 14 and thus of the receiving channel 15 is closer to the upper boundary wall 4 of the cage 2 and this creates a permanent tilting moment which keeps the pressure piece 3 pressed slightly against the upper boundary wall 4 of the cage 2 during its movement and thus using the existing wall for a guide of the pressure piece 3 ensures its movement.
  • the coil spring 14 In order to prevent the coil spring 14 from contacting and possibly being damaged with a too deeply inserted conductor to be connected, the coil spring 14 is kept inaccessible with respect to the conductor receiving space 9.
  • the rounded bend 16 serves on the one hand to receive one end of the helical spring 14 and, in cooperation therewith, a protective rib 18 provided on the pressure piece 3, which extends so far that it extends in the maximum open position (FIG. 1) extends with its free end up to the free end of the rounded bend 16.
  • the lower rounded area of the bend 16 and the upper side of the protective rib 18 are kept apart from each other, so that they can move freely past each other without contact.
  • connection element that is very easy to pre-assemble. It is sufficient to insert the spring 14 and the pressure piece 3 into the cage 2 and to screw the clamping screw 1 into the threaded section 8.
  • the contact piece 11 can also be inserted without problems.
  • the arrangement can then be inserted fully assembled in the receiving space of an insulating material housing 19, which is contoured accordingly for receiving the affected parts.
  • it is an insulating material housing of a component of a socket strip. It can also be the housing of PCB terminals, feed-through terminals and other electrical connectors.
  • a space 20 is also provided in the insulating housing 19 for receiving the free end of the protective rib 18 of the pressure piece 3 in the maximum closed position of the screw terminal.
  • An insertion funnel 21 is formed in the insulating housing 19 below the receiving area for the clamping screw 1, through which an electrical conductor to be clamped can be inserted into the conductor receiving space 9 inside the cage 2.
  • the inserted conductor is clamped in the closed position of the screw terminal by means of the clamping screw 1 from the pressure piece 3 on the contact piece 11.

Abstract

The clamp has a cage (2), a clamping bolt (1) rotatable within a threaded section of the cage and a pressure piece (3) which can move within the cage. The pressure piece can be moved against a contact part (11) by the clamp bolt, the contact part being arranged at an angle to the bolt axis in a cable chamber (9) defined by the cage. The pressure piece is moved linearly along the longitudinal axis of the bolt as the bolt rotates, whereby the pressure piece is held against the free end of the clamp bolt over its entire range of movement by a coil spring (14) in contact with the pressure piece and the cage.

Description

Die Erfindung betrifft eine Schraubklemme für elektrische Leiter, mit einem Käfig und einer drehbar in einem Gewindeabschnitt des Käfigs drehbar angeordneten Klemmschraube sowie mit einem in dem Käfig bewegbar angeordneten Druckstück, das mittels der Klemmschraube gegen ein Kontaktstück bewegbar ist, das schräg zur Klemmschraubenachse in einem von dem Käfig definierten Leiteraufnahmeraum angeordnet ist.The invention relates to a screw terminal for electrical conductors, with a cage and a rotatably arranged in a threaded portion of the cage clamping screw and with a movably arranged in the cage pressure piece, which is movable by means of the clamping screw against a contact piece that is inclined to the clamping screw axis in one of the conductor receiving space defined in the cage is arranged.

Derartige Schraubklemmen sind in ihrem grundsätzlichen Aufbau bekannt (DE 6 942 001 U1; DE 4 400 571 A1). Bei den bekannten Schraubklemmen sind die Klemmschrauben in dem Käfig drehbar gehalten und gelagert. Sie stehen mit dem im Käfig verlagerbaren Druckstück in formschlüssigem Gewindeeingriff. Dieser Grundaufbau führt zu einer komplizierten, in der Herstellung teuren Konstruktion sowohl im Bereich zwischen der Drehlagerung zwischen Schraube und Käfig, wie insbesondere auch im Bereich des formschlüssigen Gewindeeingriffes zwischen dem Druckstück und der Klemmschraube. Auch die Montage der betroffenen Teile ist aufwendig und erfordert in jedem Fall maschinellen Einsatz. Besonders nachteilig ist ferner, daß die Zahl der in Eingriff stehenden Gewindegänge zwischen Klemmschraube und Druckstück variiert und bei sehr weiter Bewegung des Druckstückes auf das Kontaktstück zu, also beispielsweise bei sehr kleinem eingelegten Leiter, funktionsgefährdend gering sein kann. Bei der aus der DE 4 400 571 A1 bekannten Schraubklemme sind darüber hinaus in weiterhin verkomplizierender Weise zu den Käfigwandungen gesonderte Führungsmittel für das Druckstück vorgesehen, wie dies auch bei gattungsmäßig abweichenden Schraubklemmen (DE 2 262 728 C2) der Fall ist.The basic structure of such screw terminals is known (DE 6 942 001 U1; DE 4 400 571 A1). In the known screw terminals, the clamping screws are rotatably held and supported in the cage. They are in a form-fitting thread engagement with the pressure piece that can be moved in the cage. This basic structure leads to a complicated construction which is expensive to manufacture, both in the area between the rotary bearing between the screw and the cage, and in particular also in the area of the form-fitting thread engagement between the pressure piece and the clamping screw. The assembly of the affected parts is also complex and requires mechanical use in any case. It is also particularly disadvantageous that the number of engaged threads varies between the clamping screw and the pressure piece and with very wide movement of the pressure piece towards the contact piece, for example with a very small inserted conductor, can be functionally low. In the screw clamp known from DE 4 400 571 A1, separate guide means for the pressure piece are also provided in a further complicating manner with respect to the cage walls, as is also the case with screw clamps of a different type (DE 2 262 728 C2).

Eine weitere Ausführung einer Schraubklemme ist in der zur Gattungsbildung herangezogenen DE-OS 23 57 091 angegeben. In dieser Schrift ist eine Schraubklemme angegeben, die sich durch eine in einem Gewindeabschnitt eines Schraubklemmenkäfigs drehbar angeordnete Klemmschraube auszeichnet, deren Längsachse im wesentlichen parallel zur Einsteckrichtung eines in der Schraubklemme klemmbaren Leiters angeordnet ist. Die Klemmschraube wirkt beim Drehen auf ein Klemmelement mit einer Klemmfläche und einer hierzu winklig angeordneten Druckfläche, das sich gegen ein seitlich der Klemmschraubenachse angeordnetes Widerlager abstützt, wobei sich durch ein Verdrehen der Klemmschraube eine Verlagerung der Druckfläche des Klemmelementes ergibt, die durch ein Kippen des Klemmelementes hervorgerufen wird. Durch dieses Kippen des Klemmelementes wird die Klemmfläche gegen den festzuklemmenden Leiter gedrückt und dieser in der Schraubklemme bestimmungsgemäß festgelegt. In einer weiteren Ausführung dieser Schraubklemme kann das Klemmelement durch eine Biegefeder während des gesamten Weges gegen die Klemmschraube gedrückt sein und damit beim Entspannen der Schraubklemme von der Biegefeder in eine unbelastete Stellung zurückbewegt werden. Diese Schraubklemme weist neben fertigungstechnischen Problemen hinsichtlich der Vormontierbarkeit getrennt von einem je nach Einsatzzweck wechselnden Gehäuse insbesondere das Problem auf, daß durch die Formgebung des Druckstückes und die Kraftweiterleitung mittels einer Kippbewegung die Klemmwirkung dieser Schraubklemme nicht allen Anforderungen gerecht werden kann. Zum einen ist funktionsbedingt nur für einen konstruktiv vorgegebenen, sehr geringen Durchmesserbereich der zu klemmenden Leiter die Klemmung des Leiters durch das Druckstück im wesentlichen parallel zur Leiteroberfläche, wodurch eine gute Klemmwirkung durch große Kontaktflächen zwischen Druckstück und Leiter erzeugt werden. Insbesondere für den Einsatz bei Leitern verschiedener Durchmesser kommt es je nach konstruktiver Auslegung der Schraubklemme zu mehr oder weniger nur punktförmigen Kontakten zwischen dem Druckstück und den Leitern. Darüberhinaus wird das L-förmige Druckstück vorwiegend auf Biegung belastet, da aufgrund der räumlichen Anordnung von Klemmschraube, Druckstück und Leiter eine Kraftumlenkung um den Drehpunkt des Druckstückes erfolgen muß. Hierdurch wird zwar eine gewisse Elastizität der Leiterklemmung erreicht, doch ist unbestreitbar die Gefahr plastischen Verformens und damit nach mehrmaligem Betätigen der Schraubklemme nicht mehr ausreichender Klemmwirkung nicht zu vermeiden. Durch die Abstützung der zusätzlich vorsehbaren Feder an Teilen des Käfigs bzw. der Stromschiene ist die Schraubklemme als Montageeinheit nicht einfach vorzumontieren.Another version of a screw terminal is specified in DE-OS 23 57 091 used to form the generic type. In this document, a screw terminal is specified, which is characterized by a clamping screw rotatably arranged in a threaded section of a screw terminal cage, the longitudinal axis of which is arranged essentially parallel to the insertion direction of a conductor which can be clamped in the screw terminal. When turning, the clamping screw acts on a clamping element with a clamping surface and a pressure surface arranged at an angle to it, which is supported against an abutment arranged on the side of the clamping screw axis, a rotation of the clamping screw resulting in a displacement of the pressure surface of the clamping element, which results from the tilting of the clamping element is caused. By tilting the clamping element, the clamping surface is pressed against the conductor to be clamped and this is fixed in the screw terminal as intended. In a further embodiment of this screw clamp, the clamping element can be pressed against the clamping screw by a spiral spring along the entire path and can thus be moved back into an unloaded position by the spiral spring when the screw clamp is released. In addition to manufacturing problems with regard to the preassemblability, this screw terminal has a problem, in particular separate from a housing that changes depending on the application, that the clamping action of this screw terminal cannot meet all requirements due to the shape of the pressure piece and the force transmission by means of a tilting movement. On the one hand, due to the function, the clamping of the conductor by the pressure piece is essentially parallel to the conductor surface only for a structurally predetermined, very small diameter range of the conductors to be clamped, as a result of which a good clamping effect is generated by large contact areas between the pressure piece and the conductor. Especially for use with conductors of different diameters, depending on the design of the screw terminal, there are more or less point contacts between the pressure piece and the conductors. In addition, the L-shaped pressure piece is predominantly subjected to bending, since due to the spatial arrangement of the clamping screw, pressure piece and conductor, a force deflection around the pivot point of the pressure piece must take place. This does indeed result in a certain elasticity of the conductor clamping reached, but there is no denying the danger of plastic deformation and therefore inadequate clamping action after repeated actuation of the screw terminal. By supporting the additionally provided spring on parts of the cage or the busbar, the screw terminal as an assembly unit is not easy to preassemble.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Schraubklemme der gattungsgemäßen Art zu schaffen, die bei guter Funktionssicherheit einen denkbar einfachen konstruktiven Aufbau hat, einfach zu montieren ist und eine sichere, von Verformungseigenschaften und Klemmstellung des Druckstückes innerhalb der Schraubklemme sowie Leiterdurchmesser unabhängige Klemmwirkung hat.The present invention has for its object to provide a screw terminal of the generic type, which has a very simple structural design with good functional reliability, is easy to assemble and has a safe clamping effect independent of the deformation properties and clamping position of the pressure piece within the screw terminal and conductor diameter.

Die erfindungsgemäße Lösung besteht im wesentlichen darin, daß das Druckstück durch eine Drehung der Klemmschraube entlang der Längsachse der Klemmschraube linear verschiebbar ist, und daß das Druckstück an das freie Ende der Klemmschraube mittels einer sich am Druckstück und am Käfig abstützenden Schraubenfeder über den gesamten Wegbereich des Druckstückes angedrückt gehalten ist.The solution according to the invention consists essentially in that the pressure piece is linearly displaceable by rotating the clamping screw along the longitudinal axis of the clamping screw, and that the pressure piece on the free end of the clamping screw by means of a helical spring supported on the pressure piece and on the cage over the entire travel range of Pressure piece is kept pressed.

Die besonders vorteilhafte Wirkung ergibt sich vor allem auch durch die sehr kompakte Bauweise des Druckstückes, innerhalb dessen Außenabmessungen im wesentlichen alle für die Klemmung und die kinematische Bewegung des Druckstückes erforderlichen Funktionselemente angeordnet sind. Als Druckstück ist hierbei ein kompaktes, in seinen Außenabmessungen den Anlageflächen des Kontaktstückes entsprechendes Bauteil vorgesehen, das sich gegenüber Belastungen durch die Klemmung weitgehend unverformbar verhält und daher besonders gute Klemmwirkungen für den Leiter bedingt. Auch ist durch die Anordnung einer Schraubenfeder mit ihrer einfachen Herstellung und ihrem geringen Platzbedarf innerhalb des von dem Druckstück umfaßten Bereichs der Schraubklemme dafür gesorgt, daß die Abstützung des Druckstückes über den gesamten Wegbereich an das freie Ende der Klemmschraube und damit eine automatische Rückholbewegung beim Entspannen der Schraubklemme sicher gewährleistet ist. Hierdurch wird in der Summe eine nur einen geringen Bauraum benötigende und einfache Teile verwendende Klemmechanik realisiert, die darüberhinaus montagetechnisch mit einfachen Mitteln und damit kostengünstig herzustellen und vorzumontieren ist. Darüberhinaus ist aufgrund der Klemmechanik sowie der Zuordnung des Druckstückes und der Bewegungsrichtung des Druckstückes zum Kontaktstück dafür gesorgt, daß für alle Leiterdurchmesser eine gleichmäßig gute und sichere Klemmung des Leiters innerhalb der Schraubklemme zu erzielen ist. Durch die lineare Verschiebung des Druckstückes sowie die bei dieser linearen Verschiebung erfolgende Parallelverschiebung der zugeordneten Flächen von Druckstück und Kontaktstück liegt in jeder Stellung des Druckstückes ein paralleler Einführkanal für einen in die Schraubklemme einzuführenden Leiter vor, der bei Klemmung des Leiters eine große Kontaktfläche zwischen einerseits Kontaktstück und Leiter und andererseits Druckstück und Leiter gewährleistet. Durch diese große Berührungsfläche zwischen Leiter und Klemmstellen der Schraubklemme ist auch bei vibrationsbelasteten Einsatzfällen der erfindungsgemäßen Schraubklemme eine sichere Klemmung gewährleistet.The particularly advantageous effect results above all from the very compact design of the pressure piece, within the outer dimensions of which essentially all the functional elements required for the clamping and the kinematic movement of the pressure piece are arranged. A compact component, the external dimensions of which correspond to the contact surfaces of the contact piece, is provided as the pressure piece, which behaves largely non-deformable in relation to loads due to the clamping and therefore requires particularly good clamping effects for the conductor. It is also ensured by the arrangement of a coil spring with its simple manufacture and its small space requirement within the area of the screw clamp encompassed by the pressure piece that the support of the pressure piece over the entire travel range to the free end of the clamping screw and thus an automatic return movement when relaxing the Screw terminal is guaranteed securely. As a result, a clamping mechanism which requires only a small amount of space and uses simple parts is implemented, which, moreover, can be assembled and preassembled with simple means and thus inexpensively. In addition, due to the clamping mechanism and the assignment of the pressure piece and the direction of movement of the pressure piece to the contact piece, it is ensured that uniformly good and secure clamping of the conductor within the screw terminal can be achieved for all conductor diameters. Due to the linear displacement of the pressure piece and the with this linear displacement of the assigned surfaces of the pressure piece and contact piece, there is a parallel insertion channel for a conductor to be inserted into the screw terminal in every position of the pressure piece, which ensures a large contact area between the contact piece and the conductor and the pressure piece and the conductor when the conductor is clamped . This large contact area between the conductor and the clamping points of the screw terminal ensures secure clamping even when the screw terminal according to the invention is subjected to vibrations.

Die Konstruktion wird weiterhin wesentlich dadurch vereinfacht, daß das Druckstück ein einfach herzustellendes Druckgußteil ohne jedwede Bearbeitung wie Gewindeschneiden oder dergleichen sein kann.The construction is further simplified considerably in that the pressure piece can be an easily produced die-cast part without any processing such as thread cutting or the like.

Die Montage dieser Schraubklemme als in sich geschlossenes fertig montiertes Anschlußelement läßt sich in denkbar einfacher Weise, erforderlichenfalls ohne maschinellen Einsatz und auch ohne überhaupt den Einsatz von Werkzeugen durchführen. Es genügt, Schraubenfeder und Druckstück in den Käfig einzulegen und die Klemmschraube einzuschrauben. Die so gebildeten Anschlußelemente können beliebig in Buchsen- oder Stiftleisten, Leiterplattenklemmen, Durchgangsklemmen und dergleichen eingesetzt werden.The assembly of this screw terminal as a self-contained, fully assembled connection element can be carried out in a very simple manner, if necessary without mechanical use and also without the use of tools at all. It is sufficient to insert the coil spring and pressure piece into the cage and screw in the clamping screw. The connecting elements formed in this way can be used as desired in socket or pin strips, printed circuit board terminals, feed-through terminals and the like.

Weitere bevorzugte Ausgestaltungen sind in Unteransprüchen gekennzeichnet.Further preferred configurations are characterized in the subclaims.

In einer besonders vorteilhaften Weise ist die Längsachse der Schraubenfeder parallel zur Längsachse der Klemmschraube angeordnet, so daß die Schraubenfeder ausschließlich auf Druck beansprucht wird, wenn das Druckstück mittels der Klemmschraube verschoben ist.In a particularly advantageous manner, the longitudinal axis of the coil spring is arranged parallel to the longitudinal axis of the clamping screw, so that the coil spring is only subjected to pressure when the pressure piece is displaced by means of the clamping screw.

Hervorzuheben ist die versetzte Anordnung der Achse der Feder und der Klemmschraubenachse. Dies führt dazu, daß dauerhaft ein Moment erzeugt wird, das dazu genutzt werden kann, das Druckstück beispielsweise gegen die obere Begrenzungswand des Käfigs zu drücken, so daß das Druckstück im Käfig unter Ausnutzung der vorhandenen Käfigwände ohne gesonderte Führungsmittel eine funktionsgerechte einwandfreie Führung erfährt. Dies trägt zum einfachen konstruktiven Aufbau bei.The staggered arrangement of the axis of the spring and the clamping screw axis should be emphasized. This leads to the fact that a moment is permanently generated, which can be used to press the pressure piece against the upper boundary wall of the cage, for example, so that the pressure piece in the cage, using the existing cage walls without separate guide means, is functionally and properly guided. This contributes to the simple construction.

Gemäß einer weiteren bevorzugten Ausgestaltung ist der Käfig in an sich bekannter Weise als Blechbiegeteil ausgebildet. Der Gewindeabschnitt ist dabei durch zwei einander überlappende Bügel des Käfigs gebildet. Das Gewinde ist damit in vorteilhafter Weise selbsthemmend.According to a further preferred embodiment, the cage is designed as a bent sheet metal part in a manner known per se. The threaded section is formed by two overlapping brackets of the cage. The thread is thus advantageously self-locking.

In weiterer, sehr zweckmäßiger Ausgestaltung ist die Feder gegenüber dem Leiteraufnahmeraum unzugänglich gehalten, so daß ausgeschlossen ist, daß ein zu weit eingesteckter Leiter die Feder kontaktieren und in ihrer Lage verändern oder gar beschädigen kann. In weiterer zweckmäßiger Ausgestaltung sind hierzu Schutzrippen am Druckstück und/oder am Käfig vorgesehen, für die Freiräume bei der Relativbewegung zwischen Druckstück und Käfig vorgesehen sind.In a further, very useful embodiment, the spring is kept inaccessible with respect to the conductor receiving space, so that it is excluded that a conductor which is inserted too far can contact the spring and change its position or even damage it. In a further expedient embodiment, protective ribs are provided on the pressure piece and / or on the cage, for which free spaces are provided during the relative movement between the pressure piece and the cage.

Ein bevorzugtes Ausführungsbeispiel einer Schraubklemme gemäß der Erfindung wird nachstehend unter Bezugnahme auf die Zeichnung näher beschrieben.A preferred embodiment of a screw terminal according to the invention is described below with reference to the drawing.

Es zeigen:

Figur 1
eine Seitenansicht einer Schraubklemme gemäß der Erfindung in teilweiser Schnittdarstellung in maximaler Offenstellung,
Figur 2
einen Querschnitt durch die Schraubklemme nach Figur 1,
Figur 3
die Schraubklemme gemäß Figur 1 in maximaler Schließstellung.
Show it:
Figure 1
2 shows a side view of a screw terminal according to the invention in a partial sectional view in the maximum open position,
Figure 2
2 shows a cross section through the screw terminal according to FIG. 1,
Figure 3
the screw terminal according to Figure 1 in the maximum closed position.

Die Schraubklemme hat als wesentliche Bauelemente eine Klemmschraube 1, einen Käfig 2 und ein Druckstück 3. Der Käfig 2 ist im dargestellten Ausführungsbeispiel als Blechbiegeteil ausgebildet, das eine obere Begrenzungswand 4, Seitenwände 5 und untere, überlappt liegende, schräg zur Achse der Klemmschraube 1 orientierte Begrenzungswände 6 hat. Die Schmalseitenwände des Käfigs 2 sind auf der einen Seite benachbart der oberen Begrenzungswand 4 durch überlappt liegende Bügel 7 gebildet, in denen sich das Gewinde 8 befindet, in das die Klemmschraube 1 eingeschraubt werden kann. Durch die Ausbildung des Gewindes in überlappt liegenden Bügeln ist das Gewinde selbsthemmend. Unterhalb dieser Bügel 7 ist diese Schmalseitenwand offen und bildet dadurch die Zugangsöffnung zu dem von dem Käfig 2 definierten Leiteraufnahmeraum 9.The screw terminal has as essential components a clamping screw 1, a cage 2 and a pressure piece 3. The cage 2 is formed in the illustrated embodiment as a bent sheet metal part that an upper boundary wall 4, side walls 5 and lower, overlapping, oriented obliquely to the axis of the clamping screw 1 Has boundary walls 6. The narrow side walls of the cage 2 are formed on one side adjacent to the upper boundary wall 4 by overlapping brackets 7, in which the thread 8 is located, into which the clamping screw 1 can be screwed. The thread is self-locking due to the formation of the thread in overlapping brackets. Below this bracket 7, this narrow side wall is open and thereby forms the access opening to the conductor receiving space 9 defined by the cage 2.

Die gegenüberliegende Schmalseitenwand wird im oberen Bereich durch einen Bügel 10 gebildet. Darunter befindet sich eine bis zu den unteren überlappt liegenden Begrenzungswänden 6 reichende Öffnung, durch die hindurch ein Kontaktstück 11 in den Leiteraufnahmeraum 9 des Käfigs 2 eingesteckt werden kann, das dann in Schräglage zur Achse der Klemmschraube 1 auf den unteren überlappenden Begrenzungswänden 6 des Käfigs 2 aufliegt. Im dargestellten Ausführungsbeispiel ist das Kontaktstück 11 in Form einer Stromschiene ausgebildet, die an einer außerhalb des Käfigs 2 verbleibenden Abwinkelung 12 beispielsweise einen Doppelflachfederkontakt 13 trägt.The opposite narrow side wall is formed in the upper area by a bracket 10. Underneath there is an opening reaching to the lower overlapping boundary walls 6, through which a contact piece 11 can be inserted into the conductor receiving space 9 of the cage 2, which is then in Oblique to the axis of the clamping screw 1 rests on the lower overlapping boundary walls 6 of the cage 2. In the exemplary embodiment shown, the contact piece 11 is designed in the form of a busbar, which carries, for example, a double flat spring contact 13 on a bend 12 remaining outside the cage 2.

In dem Käfig ist das Druckstück 3 beweglich angeordnet. Es ist an dem freien Ende der Klemmschraube 1 lediglich kraftschlüssig durch eine Schraubenfeder 14 angedrückt gehalten, die so bemessen ist, daß die Andrückung im gesamten Wegbahnbereich des Druckstückes 3 zwischen der maximalen Offenstellung (Fig. 1) und der maximalen Schließstellung (Fig. 3) aufrecht erhalten bleibt. Die Schraubenfeder 14 stützt sich einerseits am Käfig 2, und zwar hier an dessen Bügel 10, und andererseits am Druckstück 3 ab. Zweckmäßig ist hierfür in dem Druckstück 3 ein Aufnahmekanal 15 vorgesehen, in den die Schraubenfeder eintreten kann. Der Bügel 10 übergreift zweckmäßig mit einer in etwa der Federkontur entsprechend gerundeten Abwinkelung 16 das andere Ende der Feder.The pressure piece 3 is movably arranged in the cage. It is only held non-positively on the free end of the clamping screw 1 by a helical spring 14 which is dimensioned such that the pressure in the entire path area of the pressure piece 3 between the maximum open position (FIG. 1) and the maximum closed position (FIG. 3) is maintained. The coil spring 14 is supported on the one hand on the cage 2, namely here on its bracket 10, and on the other hand on the pressure piece 3. For this purpose, a receiving channel 15 is expediently provided in the pressure piece 3, into which the helical spring can enter. The bracket 10 expediently overlaps the other end of the spring with an angled portion 16 which is approximately rounded in accordance with the spring contour.

Die Längsachse der Schraubenfeder 14 und die Längsachse der Klemmschraube 1 liegen versetzt zueinander. Die Längsachse der Schraubenfeder 14 und damit des Aufnahmekanales 15 liegt dabei näher zur oberen Begrenzungswand 4 des Käfigs 2 und hierdurch entsteht ein dauerndes Kippmoment, das das Druckstück 3 bei seiner Bewegung leicht an die obere Begrenzungswand 4 des Käfigs 2 angedrückt hält und damit unter Ausnutzung der vorhandenen Wand für eine Führung des Druckstückes 3 bei seiner Bewegung sorgt.The longitudinal axis of the coil spring 14 and the longitudinal axis of the clamping screw 1 are offset from one another. The longitudinal axis of the helical spring 14 and thus of the receiving channel 15 is closer to the upper boundary wall 4 of the cage 2 and this creates a permanent tilting moment which keeps the pressure piece 3 pressed slightly against the upper boundary wall 4 of the cage 2 during its movement and thus using the existing wall for a guide of the pressure piece 3 ensures its movement.

In weiterer zweckmäßiger Ausgestaltung befindet sich an dem Druckstück 3 eine Vertiefung 17, in die zwecks besserer Abstützung das freie Ende der Klemmschraube 1 eintreten kann.In a further expedient embodiment, there is a depression 17 on the pressure piece 3, into which the free end of the clamping screw 1 can enter for better support.

Um zu verhindern, daß mit einem zu tief eingesteckten anzuschließenden Leiter die Schraubenfeder 14 kontaktiert und womöglich beschädigt werden kann, ist die Schraubenfeder 14 gegenüber dem Leiteraufnahmeraum 9 unzugänglich gehalten. Im dargestellten Ausführungsbeispiel dient hierzu einerseits die abgerundete Abwinkelung 16 zur Aufnahme des einen Endes der Schraubenfeder 14 und im Zusammenwirken damit eine an dem Druckstück 3 vorgesehene Schutzrippe 18, die sich so weit vorspringend erstreckt, daß sie in der maximalen Offenstellung (Fig. 1) sich mit ihrem freien Ende bis an das freie Ende der abgerundeten Abwinkelung 16 heran erstreckt.In order to prevent the coil spring 14 from contacting and possibly being damaged with a too deeply inserted conductor to be connected, the coil spring 14 is kept inaccessible with respect to the conductor receiving space 9. In the exemplary embodiment shown, the rounded bend 16 serves on the one hand to receive one end of the helical spring 14 and, in cooperation therewith, a protective rib 18 provided on the pressure piece 3, which extends so far that it extends in the maximum open position (FIG. 1) extends with its free end up to the free end of the rounded bend 16.

Um insoweit bei der Schließbewegung des Druckstückes eine unbeeinträchtigte freie Bewegungsmöglichkeit zu haben, sind der untere gerundete Bereich der Abwinkelung 16 und die obere Seite der Schutzrippe 18 abständig voneinander gehalten, so daß sie sich frei ohne Kontakt zueinander aneinander vorbei bewegen können.In order to have an unimpeded free movement in the closing movement of the pressure piece, the lower rounded area of the bend 16 and the upper side of the protective rib 18 are kept apart from each other, so that they can move freely past each other without contact.

Die vorstehend geschilderte Anordnung bildet ein in sich geschlossenes, denkbar einfach vorzumontierendes Anschlußelement. Es genügt, in den Käfig 2 die Feder 14 und das Druckstück 3 einzusetzen und die Klemmschraube 1 in den Gewindeabschnitt 8 einzuschrauben. Auch das Kontaktstück 11 kann problemlos eingesteckt werden. Die Anordnung kann dann fertig montiert in den Aufnahmeraum eines Isolierstoffgehäuses 19 eingelegt werden, der entsprechend zur Aufnahme der betroffenen Teile konturiert ist. Im dargestellten Ausführungsbeispiel handelt es sich um Isolierstoffgehäuse eines Bauelementes einer Buchsenleiste. Es kann sich auch um das Gehäuse von Leiterplattenklemmen, Durchgangsklemmen und sonstiger elektrischer Verbinder handeln.The arrangement described above forms a self-contained connection element that is very easy to pre-assemble. It is sufficient to insert the spring 14 and the pressure piece 3 into the cage 2 and to screw the clamping screw 1 into the threaded section 8. The contact piece 11 can also be inserted without problems. The arrangement can then be inserted fully assembled in the receiving space of an insulating material housing 19, which is contoured accordingly for receiving the affected parts. In the illustrated embodiment, it is an insulating material housing of a component of a socket strip. It can also be the housing of PCB terminals, feed-through terminals and other electrical connectors.

Im dargestellten Ausführungsbeispiel ist in dem Isolierstoffgehäuse 19 auch ein Freiraum 20 zur Aufnahme des freien Endes der Schutzrippe 18 des Druckstückes 3 in der maximalen Schließstellung der Schraubklemme vorgesehen.In the illustrated embodiment, a space 20 is also provided in the insulating housing 19 for receiving the free end of the protective rib 18 of the pressure piece 3 in the maximum closed position of the screw terminal.

In dem Isolierstoffgehäuse 19 ist unterhalb des Aufnahmebereiches für die Klemmschraube 1 ein Einführungstrichter 21 gebildet, durch den ein anzuklemmender elektrischer Leiter in den Leiteraufnahmeraum 9 im Inneren des Käfigs 2 eingesteckt werden kann. Der eingesteckte Leiter wird in der Schließstellung der Schraubklemme mittels der Klemmschraube 1 von dem Druckstück 3 auf dem Kontaktstück 11 festgeklemmt.An insertion funnel 21 is formed in the insulating housing 19 below the receiving area for the clamping screw 1, through which an electrical conductor to be clamped can be inserted into the conductor receiving space 9 inside the cage 2. The inserted conductor is clamped in the closed position of the screw terminal by means of the clamping screw 1 from the pressure piece 3 on the contact piece 11.

Claims (10)

Schraubklemme für elektrische Leiter, mit einem Käfig (2) und einer in einem Gewindeabschnitt (8) des Käfigs (2) drehbar angeordneten Klemmschraube (1) sowie mit einem in dem Käfig bewegbar angeordneten Druckstück (3), das mittels einer Klemmschraube (1) gegen ein Kontaktstück (11) bewegbar ist, das schräg zur Klemmschraubenachse in einem von dem Käfig (2) definierten Leiteraufnahmeraum (9) angeordnet ist
dadurch gekennzeichnet, daß
das Druckstück (3) durch eine Drehung der Klemmschraube (1) entlang der Längsachse der Klemmschraube (1) linear verschiebbar ist, wobei das Druckstück (3) mittels einer sich an dem Druckstück (3) und dem Käfig (2) abstützenden Schraubenfeder (14) über den gesamten Wegbereich des Druckstückes (3) an das freie Ende der Klemmschraube (1) angedrückt gehalten ist.Screw clamp for electrical conductors, with a cage (2) and a clamping screw (1) rotatably arranged in a threaded section (8) of the cage (2) and with a pressure piece (3) movably arranged in the cage, which can be moved by means of a clamping screw (1) is movable against a contact piece (11) which is arranged obliquely to the clamping screw axis in a conductor receiving space (9) defined by the cage (2)
characterized in that
the pressure piece (3) can be displaced linearly by rotating the clamping screw (1) along the longitudinal axis of the clamping screw (1), the pressure piece (3) being supported by a coil spring (14) supported on the pressure piece (3) and the cage (2) ) is held pressed over the entire path of the pressure piece (3) to the free end of the clamping screw (1). Schraubklemme nach Anspruch 1, dadurch gekennzeichnet, daß die Längsachse der Schraubenfeder (14) parallel zur Längsachse der Klemmschraube (1) angeordnet ist.Screw clamp according to claim 1, characterized in that the longitudinal axis of the helical spring (14) is arranged parallel to the longitudinal axis of the clamping screw (1). Schraubklemme nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Längsachse der Feder (14) und die Längsachse der Klemmschraube (1) versetzt zueinander liegen.Screw clamp according to one of claims 1 or 2, characterized in that the longitudinal axis of the spring (14) and the longitudinal axis of the clamping screw (1) are offset from one another. Schraubklemme nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß in dem Druckstück (3) ein Aufnahmekanal (15) für die Schraubenfeder (14) und eine Vertiefung (17) zur Aufnahme des freien Endes der Klemmschraube (1) vorgesehen sind.Screw clamp according to one of the preceding claims, characterized in that a receiving channel (15) for the helical spring (14) and a recess (17) for receiving the free end of the clamping screw (1) are provided in the pressure piece (3). Schraubklemme nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Käftig (2) als Blechbiegeteil ausgebildet ist und der Gewindeabschnitt (8) in zwei einander überlappenden Bügeln (7) gebildet ist.Screw clamp according to one of the preceding claims, characterized in that the retainer (2) is designed as a bent sheet metal part and the threaded section (8) is formed in two overlapping brackets (7). Schraubklemme nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Schraubenfeder (14) von dem Leiteraufnahmeraum (9) des Käfigs (2) unzugänglich gehalten ist.Screw terminal according to one of the preceding claims, characterized in that the helical spring (14) is kept inaccessible from the conductor receiving space (9) of the cage (2). Schraubklemme nach Anspruch 6, dadurch gekennzeichnet, daß an dem Druckstück (3) und/oder dem Käfig (2) Schutzstücke (16, 18) gebildet sind.Screw clamp according to claim 6, characterized in that protective pieces (16, 18) are formed on the pressure piece (3) and / or the cage (2). Schraubklemme nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das eine Ende der Schraubenfeder an einem Bügel (10) des Käfigs (2) abgestützt ist, der mit einer abgerundeten Abwinkelung (16) über eine vorgegebene Strecke den Endbereich der Druckfeder (14) umgreift.Screw clamp according to one of the preceding claims, characterized in that one end of the helical spring is supported on a bracket (10) of the cage (2) which, with a rounded bend (16), engages around the end region of the compression spring (14) over a predetermined distance . Schraubklemme nach den Ansprüchen 7 und 8, dadurch gekennzeichnet, daß an dem Druckstück (3) eine vorspringende Schutzrippe (18) vorgesehen ist, die sich in der maximalen Offenstellung der Schraubklemme bis zum freien Ende der gerundeten Abwinkelung (16) des Bügels (10) erstreckt, wobei die abgerundete Abwinkelung (16) und die Schutzrippe (18) soweit abständig voneinander liegen, daß sie sich bei der Bewegung des Druckstückes (3) in die Schließstellung der Schraubklemme frei aneinander vorbei bewegen können.Screw clamp according to claims 7 and 8, characterized in that a protruding protective rib (18) is provided on the pressure piece (3), which extends in the maximum open position of the screw clamp up to the free end of the rounded bend (16) of the bracket (10). extends, the rounded bend (16) and the protective rib (18) being so far apart that they can move freely past one another when the pressure piece (3) moves into the closed position of the screw terminal. Schraubklemme nach Anspruch 9, dadurch gekennzeichnet, daß in einem umgebenden Isolierstoffgehäuse (19) ein Freiraum (20) zur Aufnahme des freien Endes der Schutzrippe (18) in der Schließstellung der Schraubklemme gebildet ist.Screw terminal according to claim 9, characterized in that a free space (20) for receiving the free end of the protective rib (18) in the closed position of the screw terminal is formed in a surrounding insulating material housing (19).
EP96103713A 1995-04-01 1996-03-09 Electrical connector with a clamping screw Expired - Lifetime EP0735614B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19512337 1995-04-01
DE19512337A DE19512337A1 (en) 1995-04-01 1995-04-01 Screw terminal for electrical conductors

Publications (3)

Publication Number Publication Date
EP0735614A2 true EP0735614A2 (en) 1996-10-02
EP0735614A3 EP0735614A3 (en) 1998-02-11
EP0735614B1 EP0735614B1 (en) 2001-10-10

Family

ID=7758591

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96103713A Expired - Lifetime EP0735614B1 (en) 1995-04-01 1996-03-09 Electrical connector with a clamping screw

Country Status (3)

Country Link
EP (1) EP0735614B1 (en)
AT (1) ATE206846T1 (en)
DE (2) DE19512337A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008119307A1 (en) * 2007-04-03 2008-10-09 Siemens Aktiengesellschaft Connecting clamping device for an electrical conductor, particularly an electrical conductor having a cable lug
DE102009007073A1 (en) 2009-02-02 2010-08-12 Siemens Aktiengesellschaft Electrically conducting screw connection for switching device, has screwing element guided by clamping element and electrically conducting connection element that forms angle with screwing axis defined by screwing element
EP4287411A1 (en) 2022-06-01 2023-12-06 Siemens Aktiengesellschaft Underplug protection part

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008010162A1 (en) * 2008-02-20 2009-09-03 Phoenix Contact Gmbh & Co. Kg Electrical connection device has housing and conductor receptacle provided with contact connection for receiving and contacting conductor
DE102021108317A1 (en) 2021-04-01 2022-10-06 Phoenix Contact Gmbh & Co. Kg Terminal for connecting an electrical conductor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1100123B (en) * 1955-01-07 1961-02-23 Dr Friedrich Wieland Terminal for electrical conductors
DE6942001U (en) * 1969-10-27 1970-02-05 Weidmueller Kg C SCREW CLAMP FOR ELECTRICAL CABLES
DE2107218A1 (en) * 1971-02-16 1972-08-24 Siemens Ag Electrical installation device
DE8534698U1 (en) * 1984-12-12 1986-02-06 CGEE-Alsthom, Levallois-Perret Screw terminal
EP0263390A2 (en) * 1986-10-04 1988-04-13 Asea Brown Boveri Aktiengesellschaft Clamping screw
DE4328928A1 (en) * 1993-08-27 1995-03-02 Contact Gmbh Contact and clamping device for electrical connectors

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE792897A (en) * 1971-12-31 1973-06-18 Alsthom Cgee ELECTRIC TERMINAL TIGHTENED BY AXIAL CONNECTION SCREW
US5292263A (en) * 1993-01-12 1994-03-08 The Whitaker Corporation Electrical connector

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1100123B (en) * 1955-01-07 1961-02-23 Dr Friedrich Wieland Terminal for electrical conductors
DE6942001U (en) * 1969-10-27 1970-02-05 Weidmueller Kg C SCREW CLAMP FOR ELECTRICAL CABLES
DE2107218A1 (en) * 1971-02-16 1972-08-24 Siemens Ag Electrical installation device
DE8534698U1 (en) * 1984-12-12 1986-02-06 CGEE-Alsthom, Levallois-Perret Screw terminal
EP0263390A2 (en) * 1986-10-04 1988-04-13 Asea Brown Boveri Aktiengesellschaft Clamping screw
DE4328928A1 (en) * 1993-08-27 1995-03-02 Contact Gmbh Contact and clamping device for electrical connectors

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008119307A1 (en) * 2007-04-03 2008-10-09 Siemens Aktiengesellschaft Connecting clamping device for an electrical conductor, particularly an electrical conductor having a cable lug
DE102009007073A1 (en) 2009-02-02 2010-08-12 Siemens Aktiengesellschaft Electrically conducting screw connection for switching device, has screwing element guided by clamping element and electrically conducting connection element that forms angle with screwing axis defined by screwing element
EP4287411A1 (en) 2022-06-01 2023-12-06 Siemens Aktiengesellschaft Underplug protection part
DE102022205610A1 (en) 2022-06-01 2023-12-07 Siemens Aktiengesellschaft Under-plug protection part

Also Published As

Publication number Publication date
ATE206846T1 (en) 2001-10-15
DE59607856D1 (en) 2001-11-15
EP0735614A3 (en) 1998-02-11
EP0735614B1 (en) 2001-10-10
DE19512337A1 (en) 1996-10-02

Similar Documents

Publication Publication Date Title
DE3008474C2 (en) Limit switch with a switching device that can be actuated by a push button
DE3141437A1 (en) GAS-INSULATED BUSBAR
EP3595090B1 (en) Cable connection terminal
EP0271594B1 (en) Clamping device
DE3830442A1 (en) CLAMPING DEVICE FOR SCREWLESS CONNECTION OF AT LEAST ONE ELECTRICAL LEAD TO A DEVICE
DE19513281A1 (en) Combination terminal-clamp for automatic cut=outs
EP0284948B1 (en) Pressure switch
DE2550245A1 (en) CONNECTING CLAMP FOR A DEVICE OR ELEMENT FOR ELECTRICAL CONNECTION
EP0735614B1 (en) Electrical connector with a clamping screw
DE19606216C2 (en) Device for fastening a low-voltage device on a top-hat rail
DE4141307C2 (en) Brush guide arrangement for an electrical machine
EP3317922B1 (en) Sliding element for contacting printed circuit boards
DE19604615C1 (en) Contacting device e.g. for non-stripped flexible circular conductor e.g. for communication equipment
DE3118057A1 (en) Connecting terminal for electrical lead wires
DE102021105362A1 (en) Front screw terminal
EP1750330B1 (en) Contacting by clamping and rotation for an electrical conductor
DE1105493B (en) Clamping device for electrical conductors
EP0123040B1 (en) Terminal board for electric and electronic apparatuses, e.g. overcurrent protection switches
EP0634764A1 (en) Kev switch module
EP0937316B1 (en) Cageclamp-technology connecting piece
EP1355379B1 (en) Plug connector with insulation displacement contacts
DE4401724A1 (en) Series module system front wiring device
EP1028488B1 (en) Connecting terminal for an electrical apparatus
DE19522719C1 (en) Explosion-proof lamp holder with contact means that can be opened and closed
DE10211814C1 (en) Plug socket protected by shutter, has contacts also serving as springs to position longitudinal slider when closed

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT CH DE ES FR GB IT LI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT CH DE ES FR GB IT LI

17P Request for examination filed

Effective date: 19980121

17Q First examination report despatched

Effective date: 20000303

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE ES FR GB IT LI

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20011010

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20011010

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20011010

REF Corresponds to:

Ref document number: 206846

Country of ref document: AT

Date of ref document: 20011015

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59607856

Country of ref document: DE

Date of ref document: 20011115

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020309

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020331

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020331

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20011010

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20020430

EN Fr: translation not filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20100324

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111001

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59607856

Country of ref document: DE

Effective date: 20111001