EP1081790B1 - Spring clip for connectiong an electrical conductor - Google Patents

Spring clip for connectiong an electrical conductor Download PDF

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Publication number
EP1081790B1
EP1081790B1 EP00114747A EP00114747A EP1081790B1 EP 1081790 B1 EP1081790 B1 EP 1081790B1 EP 00114747 A EP00114747 A EP 00114747A EP 00114747 A EP00114747 A EP 00114747A EP 1081790 B1 EP1081790 B1 EP 1081790B1
Authority
EP
European Patent Office
Prior art keywords
clamping
spring
leg
operating
spring terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00114747A
Other languages
German (de)
French (fr)
Other versions
EP1081790A2 (en
EP1081790A3 (en
Inventor
Werner Beege
Werner Radde
Manfred Domrath
Reinhard Ruhm
Klaus Steinmetz
Hubert Herrmann
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 EP1081790A2 publication Critical patent/EP1081790A2/en
Publication of EP1081790A3 publication Critical patent/EP1081790A3/en
Application granted granted Critical
Publication of EP1081790B1 publication Critical patent/EP1081790B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01R4/48365—Spring-activating arrangements mounted on or integrally formed with the spring housing with integral release means
    • 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
    • H01R4/483—Pivoting arrangements, e.g. lever pushing on the spring
    • 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
    • H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
    • H01R4/4819—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end the spring shape allowing insertion of the conductor end when the spring is unbiased
    • H01R4/4821—Single-blade spring

Definitions

  • the invention relates to a spring clip for connecting electrical conductors an insulating housing in which at least one connection chamber is provided is in which a clamping spring is arranged, which is bent at an angle so that it at the free end of their clamping leg one on the inserted electrical Head directed, hooking on this forms the clamping edge, as well as with a Actuator for reopening the connection.
  • the present invention has for its object a spring clip of the generic type Kind of creating where the reopening of the connection is reliable and can be done without risk of damage to the conductor to be removed.
  • the solution according to the invention essentially consists in the fact that the clamping edge end of the clamping leg of the clamping spring has a double offset with a first, continuing from the leg to the contact of the electrical conductor Bend with a second bend leading to the leg and the bends are bent so that the clamping edge is in the re-opening position is no longer aimed at the thigh.
  • the double bend formed so that the one end portion having the clamping edge forms which extends parallel to the leg in the re-opening position. Thanks to this configuration, the removal of the conductor cannot be hindered nor can this be damaged during removal, even if it is multi-wire and / or fine-wire conductors.
  • the Actuation zone is at the free end of the clamping leg of the clamping spring an actuating tab is provided, the Actuation zone, as seen from the pivot point of the clamping leg, at least extends up to the clamping edge. This ensures that it is easier to handle Way with full use of the lever arm with relatively little effort the clamping spring can be moved into the re-opening position.
  • the spring clip shown in the figures which in all embodiments as Conductor terminal is formed, has an insulating housing 1, which in the figures 2-5 is shown simplified in partial section and in which a connection chamber 2 is formed, in which a busbar piece 3 is arranged, the contact pins 4 for Has inserted into a circuit board.
  • the busbar piece 3 is essentially is U-shaped in cross section and is in the busbar piece 3 itself self-holding, a clamping spring 5 is used, with which an electrical to be connected Conductor 6 is clamped in contact with a section of the conductor rail piece 3 can be.
  • the invention can be applied to any other connector, such as socket connectors and the like.
  • the clamping spring 5 is angularly bent so that it is at its free end Clamping leg 7 a clamping edge directed onto the inserted electrical conductor 6 8, which is on the inserted, against an upper leg 3A of the Busbar piece 3 clamped electrical conductor 6 can get caught and thus prevents a ladder pull out.
  • the clamping spring 5 has a supporting leg opposite the clamping leg 7 9, which is supported on the lower leg 3B of the busbar piece 3.
  • the bends are ready bent that in the re-opening position of the connector by an operating tool is brought about, the end portion having the clamping edge 8 11 at least parallel to the leg 3A and thus to that on the leg 3A extends stretched-in electrical conductor 6 so that in any case the end section 11 of the clamping leg 7 having the clamping edge 8 as far as from the plugged-in electrical conductor 6 that the clamping edge 8 does not is directed towards the electrical conductor and therefore the conductor pull-out is no longer is hindered and also a conductor, in particular a fine or multi-wire conductor, can no longer be damaged.
  • the actuating device includes actuating elements also integrated in the insulating housing 1 of the spring clips, with those in the sense of the prescribed opening or reopening the clamping spring on the actuation zone 16 of the actuation tab 15 of the clamping leg 7 of the clamping spring 5 can be acted on.
  • an eccentric lever 18 is provided, which is rotatable is stored in the insulating housing.
  • the axis of rotation 19 of the eccentric lever 18 lies thereby essentially perpendicularly above the clamping point.
  • the provided in the insulating housing 1 Ladder insertion opening 20 also has an insertion phase 21, so that on the part of the Isolierstoffgeophusees 1 a splicing in particular of stranded or fine-stranded conductors can be avoided.
  • FIG. 5 shows a further pivot lever as an integrated actuating element 24, which has the same axis of rotation 23 as the pivot lever 22 according to FIG. 4 and otherwise the same drain geometry in relation to the actuation zone 16 the clamping spring as the pivot lever 22 has.
  • the location of its end of operation but is changed in relation to the position of the actuating end of the pivot lever 22 so that there is a rotation of the actuation directions in relation to each other 90 °.
  • the pivot levers 22 and 24 are interchangeable. It can be thus in a cost-effective manner according to the different user needs and any different applications, construction variants for such Generate spring clip.
  • the respective lever design and the respective lever length can be optimized match the actuating forces.
  • the pivot lever 24 according to the embodiment of Figure 5 carries an actuation stop 26, for which a counter bearing is provided on the housing side. With the Limiting the path of the pivot lever ensures that the clamp spring cannot be overloaded. All other lever designs including of the eccentric lever can be provided with appropriate actuation stops his.

Landscapes

  • Clamps And Clips (AREA)
  • Multi-Conductor Connections (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Installation Of Bus-Bars (AREA)

Abstract

The housing comprises connecting chambers, containing a clamping spring (5) coacting with a current rail section (3). The spring is angularly bent to form a clamping edge (8) at the free end of its clamping shank (7). This is directed onto the inserted conductor (6) and hooked onto it. There is an actuator for opening the connection. The free end of the clamping spring has a double bend (10), extending in the direction from the inserted conductor such that the clamping edge does not abut the conductor during reopening.

Description

Die Erfindung betrifft eine Federklemme zum Anschließen elektrischer Leiter mit einem Isolierstoffgehäuse, in dem mindestens eine Anschlußkammer vorgesehen ist, in der eine Klemmfeder angeordnet ist, die winkelförmig so gebogen ist, daß sie an dem freien Ende ihres Klemmschenkels eine auf den eingesteckten elektrischen Leiter gerichtete, sich an diesem verhakende Klemmkante bildet, sowie mit einer Betätigungseinrichtung zum Wiederöffnen des Anschlusses.The invention relates to a spring clip for connecting electrical conductors an insulating housing in which at least one connection chamber is provided is in which a clamping spring is arranged, which is bent at an angle so that it at the free end of their clamping leg one on the inserted electrical Head directed, hooking on this forms the clamping edge, as well as with a Actuator for reopening the connection.

Bei bekannten Federklemmen der gattungsgemäßen Art (DE-AS 1 261 923, DE 42 33 446 C1, EP 0 908 965 A1) bleibt die Klemmkante am freien Ende des Klemmschenkels der Klemmfeder auch in der Wiederöffnungsstellung auf den elektrischen Leiter gerichtet, wodurch beim Herausziehen des Leiters Beschädigungsgefahr besteht oder zumindest die Herausnahnme beeinträchtigt werden kann. Dies gilt auch für eine bekannte Federklemme (DE 20 62 158 B2), bei denen das freie Ende des Klemmschenkels der Klemmfeder nur schwach abgewinkelt ist. In known spring clips of the generic type (DE-AS 1 261 923, DE 42 33 446 C1, EP 0 908 965 A1) the clamping edge remains at the free end of the clamping leg the clamping spring also in the re-opening position on the electrical Direction of the conductor, so there is a risk of damage when pulling out the conductor or at least the removal can be impaired. this is also valid for a known spring clip (DE 20 62 158 B2), in which the free end of the Clamping leg of the clamping spring is only slightly angled.

Es ist dabei grundsätzlich bei derartigen Federklemmen bekannt, im Bereich des freien Endes des Klemmschenkels der Klemmfeder neben einem Klemmkantenbereich eine gesonderte Betätigungslasche vorzusehen (DE-AS 1 261 923, EP 0 908 965). Die dortigen Ausgestaltungen sind bezüglich der Betätigungskraft jedoch insoweit ungünstig, als die Betätigungszone an der Betätigungslasche, gesehen vom Drehpunkt des Klemmschenkels aus, mit verringertem Hebelarm noch vor der Klemmkante liegt. Soweit bei derartigen vorbekannten Federklemmen Betätigungselemente beispielsweise in Form von Hebeln oder Stößeln in die Klemmfeder integriert sind (DE 2 062 158 B2, DE 42 33 446 C1), liegen in ungünstiger Weise auch die Angriffspunkte dieser Betätigungselemente auf dem Klemmschenkel noch deutlich vor der Klemmkante.It is basically known in the case of such spring clips, in the area of the free End of the clamping leg of the clamping spring next to a clamping edge area to provide separate actuation tab (DE-AS 1 261 923, EP 0 908 965). The ones there Embodiments are however unfavorable with regard to the actuating force, as the actuation zone on the actuation tab, seen from the fulcrum of the Clamp leg off, with a reduced lever arm is still in front of the clamping edge. So far, for example, with such known spring clips actuators are integrated in the clamping spring in the form of levers or plungers (DE 2 062 158 B2, DE 42 33 446 C1), the points of attack of these are also unfavorable Actuators on the clamping leg still clearly in front of the clamping edge.

In der DE 42 33 446 C1 ist eine Federklemme gemäß dem Oberbegriff des Anspruchs 1 beschrieben.In DE 42 33 446 C1 a spring clip according to the The preamble of claim 1 is described.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Federklemme der gattungsgemäßen Art zu schaffen, bei der das Wiederöffnen des Anschlusses zuverlässig und ohne Beschädigungsgefahr für den zu entnehmenden Leiter erfolgen kann.The present invention has for its object a spring clip of the generic type Kind of creating where the reopening of the connection is reliable and can be done without risk of damage to the conductor to be removed.

Die erfindungsgemäße Lösung besteht im wesentlichen darin, dass das die Klemmkante aufweisende Ende des Klemmschenkels der Klemmfeder eine doppelte Abkröpfung mit einer ersten, von dem Schenkel zur Anlage des elektrischen Leiters fortführenden Umbiegung mit einer zweiten zu dem Schenkel hinführenden Umbiegung aufweist und die Umbiegungen so gebogen sind, dass die Klemmkante in der Wiederöffnungsstellung nicht mehr auf den Schenkel gerichtet ist. Insbesondere ist die doppelte Abkröpfung so ausgebildet, dass die einen die Klemmkante aufweisenden Endabschnitt bildet, der sich in der Wiederöffnungsstellung parallel zu dem Schenkel erstreckt. Dank dieser Ausgestaltung kann weder die Entnahme des Leiters behindert werden noch dieser bei der Entnahme beschädigt werden, auch dann nicht, wenn es sich um mehrdrahtige und/oder feindrahtige Leiter handelt. The solution according to the invention essentially consists in the fact that the clamping edge end of the clamping leg of the clamping spring has a double offset with a first, continuing from the leg to the contact of the electrical conductor Bend with a second bend leading to the leg and the bends are bent so that the clamping edge is in the re-opening position is no longer aimed at the thigh. In particular, the double bend formed so that the one end portion having the clamping edge forms which extends parallel to the leg in the re-opening position. Thanks to this configuration, the removal of the conductor cannot be hindered nor can this be damaged during removal, even if it is multi-wire and / or fine-wire conductors.

Gemäß einer besonders bevorzugten weiteren Ausgestaltung ist an dem freien Ende des Klemmschenkels der Klemmfeder eine Betätigungslasche vorgesehen, deren Betätigungszone sich, gesehen vom Drehpunkt des Klemmschenkels aus, mindestens bis hin zur Klemmkante erstreckt. Dies gewährleistet, daß in handhabungsbequemer Weise unter voller Ausnutzung des Hebelarmes mit relativ geringem Kraftaufwand die Klemmfeder in die Wiederöffnungsstellung überführt werden kann.According to a particularly preferred further embodiment, is at the free end of the clamping leg of the clamping spring an actuating tab is provided, the Actuation zone, as seen from the pivot point of the clamping leg, at least extends up to the clamping edge. This ensures that it is easier to handle Way with full use of the lever arm with relatively little effort the clamping spring can be moved into the re-opening position.

Weitere bevorzugte Ausführungsformen betreffen die spezielle Lagezuordnung von in der Federklemme integrierten Betätigungselementen zu der Betätigungszone der Betätigungslasche derart, daß nicht nur mit geringem Kraftaufwand, sondern auch mit nur geringen Reibungsverlusten mit diesen Betätigungselementen, beispielsweise drehbar gelagerten Hebeln oder Exzentern, durch Einwirkung auf die Betätigungslasche die Klemmfeder wieder in die Wiederöffnungsstellung überführt werden kann.Further preferred embodiments relate to the special location assignment of Actuators integrated in the spring clamp to the actuation zone of the Actuating tab such that not only with little effort, but also with only slight friction losses with these actuators, for example rotatably mounted levers or eccentrics, by acting on the actuating tab the clamping spring can be moved back to the re-opening position can.

Weitere bevorzugte Ausgestaltungen ergeben sich aus weiteren Unteransprüchen.Further preferred configurations result from further subclaims.

Ausführungsbeispiele erfindungsgemäßer Federklemmen werden nachstehend unter Bezugnahme auf die beigefügten Zeichnungen näher beschrieben.Exemplary embodiments of spring clips according to the invention are described below Described in more detail with reference to the accompanying drawings.

Es zeigen:

Figur 1
ein Stromschienenstück einer Federklemme gemäß der Erfindung mit eingesetzter Klemmfeder und eingestecktem elektrischen Leiter,
Figur 2
eine Federklemme gemäß der Erfindung mit integriertem Betätigungselement in Form eines Exzenterhebels bei geschlossenem Anschluß vor Einführen eines elektrischen Leiters,
Figur 3
die Federklemme nach Figur 2 bei geöffnetem Anschluß mit eingestecktem elektrischen Leiter,
Fig. 4
eine Federklemme gemäß der Erfindung mit einer anderen Ausführungsform eines integrierten Betätigungshebels,
Fig. 5
eine Federklemme gemäß der Erfindung mit einer weiteren Ausführungsform eines integrierten Betätigungselementes, und
Fig. 6 u. 7
eine Federklemme gemäß der Erfindung in der Ausgangsstellung unmittelbar vor Leiteranschluss sowie in der Wiederöffnungsstellung des Anschlusses.
Show it:
Figure 1
a busbar piece of a spring clip according to the invention with inserted clamping spring and inserted electrical conductor,
Figure 2
a spring clip according to the invention with an integrated actuating element in the form of an eccentric lever with a closed connection before insertion of an electrical conductor,
Figure 3
2 the spring clip according to FIG. 2 with the connection open and the electrical conductor inserted,
Fig. 4
a spring clip according to the invention with another embodiment of an integrated actuating lever,
Fig. 5
a spring clip according to the invention with a further embodiment of an integrated actuating element, and
Fig. 6 u. 7
a spring clip according to the invention in the starting position immediately before the conductor connection and in the re-opening position of the connection.

Die in den Figuren dargestellte Federklemme, die in allen Ausführungsbeispielen als Leiteranschlussklemme ausgebildet ist, hat ein Isolierstoffgehäuse 1, das in den Figuren 2-5 vereinfacht im Teilschnitt dargestellt ist und in dem eine Anschlusskammer 2 gebildet ist, in der ein Stromschienenstück 3 angeordnet ist, das Kontaktstifte 4 zum Einstecken in eine Leiterplatte aufweist. Das Stromschienenstück 3 ist im wesentlichen im Querschnitt U-förmig ausgebildet und in dem Stromschienenstück 3 ist, sich selbst haltend, eine Klemmfeder 5 eingesetzt, mit der ein anzuschließender elektrischer Leiter 6 kontaktierend an einem Abschnitt des Stromschienenstückes 3 festgeklemmt werden kann. Die Erfindung lässt sich jedoch an jedem anderen Anschlussverbinder, wie beispielsweise Buchsensteckverbinder und dergleichen, verwirklichen.The spring clip shown in the figures, which in all embodiments as Conductor terminal is formed, has an insulating housing 1, which in the figures 2-5 is shown simplified in partial section and in which a connection chamber 2 is formed, in which a busbar piece 3 is arranged, the contact pins 4 for Has inserted into a circuit board. The busbar piece 3 is essentially is U-shaped in cross section and is in the busbar piece 3 itself self-holding, a clamping spring 5 is used, with which an electrical to be connected Conductor 6 is clamped in contact with a section of the conductor rail piece 3 can be. However, the invention can be applied to any other connector, such as socket connectors and the like.

Die Klemmfeder 5 ist winkelförmig so gebogen, dass sie an ihrem freien Ende ihres Klemmschenkels 7 eine auf den eingesteckten elektrischen Leiter 6 gerichtete Klemmkante 8 aufweist, die sich an dem eingesteckten, gegen einen oberen Schenkel 3A des Stromschienenstückes 3 geklemmten elektrischen Leiter 6 verhaken kann und damit einen Leiterauszug verhindert.The clamping spring 5 is angularly bent so that it is at its free end Clamping leg 7 a clamping edge directed onto the inserted electrical conductor 6 8, which is on the inserted, against an upper leg 3A of the Busbar piece 3 clamped electrical conductor 6 can get caught and thus prevents a ladder pull out.

Die Klemmfeder 5 hat gegenüberliegend dem Klemmschenkel 7 einen Abstützschenkel 9, der sich an dem unteren Schenkel 3B des Stromschienenstückes 3 abstützt. The clamping spring 5 has a supporting leg opposite the clamping leg 7 9, which is supported on the lower leg 3B of the busbar piece 3.

An dem Ende des Klemmschenkels der Klemmfeder 5 ist ein die Klemmkante 8 aufweisender Endabschnitt 11 gebildet. Erfindungsgemäß ist das freie Ende des Klemmschenkels 7 mit einer doppelten Abkröpfung 10 versehen. Die erste Umbiegung dieser doppelten Abkröpfung 10 führt dabei von dem Schenkel 3A fort. Die zweite Umbiegung führt wieder zu dem Schenkel 3A zurück. Die Umbiegungen sind dabei soweit gebogen, dass in der Wiederöffnungsstellung des Anschlusses, die von einem Betätigungswerkzeug herbeigeführt wird, sich der die Klemmkante 8 aufweisende Endabschnitt 11 mindestens parallel zu dem Schenkel 3A und damit zu dem an dem Schenkel 3A anliegenden eingestreckten elektrischen Leiter 6 erstreckt, so dass in jedem Fall der die Klemmkante 8 aufweisende Endabschnitt 11 des Klemmschenkels 7 soweit von dem eingesteckten elektrischen Leiter 6 fortsteht, dass die Klemmkante 8 nicht mehr auf den elektrischen Leiter gerichtet ist und damit der Leiterauszug nicht mehr behindert wird und auch ein Leiter, insbesondere ein fein- oder mehrdrahtiger Leiter, nicht mehr beschädigt werden kann.At the end of the clamping leg of the clamping spring 5 there is a clamping edge 8 End portion 11 formed. According to the free end of the clamping leg 7 provided with a double offset 10. The first turn this double bend 10 continues from the leg 3A. The second turn leads back to the leg 3A. The bends are ready bent that in the re-opening position of the connector by an operating tool is brought about, the end portion having the clamping edge 8 11 at least parallel to the leg 3A and thus to that on the leg 3A extends stretched-in electrical conductor 6 so that in any case the end section 11 of the clamping leg 7 having the clamping edge 8 as far as from the plugged-in electrical conductor 6 that the clamping edge 8 does not is directed towards the electrical conductor and therefore the conductor pull-out is no longer is hindered and also a conductor, in particular a fine or multi-wire conductor, can no longer be damaged.

Bei einem Öffnen bzw. Wiederöffnen des Anschlusses wird die Klemmfeder 5 so zusammengedrückt und gekippt, dass der Klemmschenkel 7 mit dem Endabschnitt 11 der Klemmkante 8 die gewünschte unkritische Lage einnehmen kann. Zur zielgerechten Ausführung dieses Bewegungsablaufes trägt bei, dass im hinteren Bereich des Abstützschenkels 9 der Klemmfeder 5 durch eine entsprechende Abkröpfung 12 eine Freimachung 13 gebildet ist, die die gewünschte Abstützung der Klemmfeder 5 in der Verformungsphase in ihrem vorderen Bereich des Abstützschenkels 9 gewährleistet.When the connection is opened or reopened, the clamping spring 5 is compressed in this way and tilted that the clamping leg 7 with the end portion 11 of the Clamping edge 8 can take the desired uncritical position. For targeted Execution of this movement sequence helps that in the rear area of the support leg 9 of the clamping spring 5 by a corresponding offset 12 a Postage is formed 13, which is the desired support of the clamping spring 5 in the Deformation phase guaranteed in its front region of the support leg 9.

Es ist nun ferner im Bereich des freien Endes des Klemmschenkels 7 der Klemmfeder 5, beispielsweise durch einen Schlitz 14 neben dem Endabschnitt 11 mit der Klemmkante 8 eine Betätigungslasche 15 gebildet, die in ihrem Verlauf im Verhältnis zum Endabschnitt 11 weiter vom eingesteckten elektrischen Leiter 6 fort gebogen ist und die auf ihrer Oberseite eine Betätigungszone 16 definiert, die sich bis zur Klemmkante 8 am Endabschnitt 11 erstreckt. Es ist in weiterer Ausgestaltung auch möglich, das freie Ende des Klemmschenkels 7 so abgestuft auszubilden, dass sich eine Verlängerung der Betätigungslasche ergibt, deren Betätigungszone sogar noch, gesehen vom Drehpunkt des Klemmschenkels 7 aus, ein wenig über die Klemmkante 8 hinaus erstreckt. Hieraus resultiert wegen voller Ausnutzung des Hebelarmes bzw. Verlängerung des Hebelarmes ein verringerter Kraftaufwand beim Betätigen der Klemmfeder im Sinne ihrer Öffnung bzw. Wiederöffnung mittels eines Betätigungswerkzeuges, wie es im einzelnen nachfolgend beschrieben ist.It is now also in the region of the free end of the clamping leg 7 of the clamping spring 5, for example through a slot 14 next to the end portion 11 with the clamping edge 8 an actuating tab 15 is formed, the course of which in relation to End portion 11 is further bent away from the inserted electrical conductor 6 and which defines an actuation zone 16 on its upper side, which extends up to the clamping edge 8 extends at the end portion 11. It is also possible in a further embodiment that Free end of the clamping leg 7 so graduated that there is an extension the actuation tab results in the actuation zone even seen from Pivot point of the clamping leg 7, extends a little beyond the clamping edge 8. This results in full utilization of the Lever arm or extension of the lever arm a reduced effort when Actuation of the clamping spring in the sense of its opening or reopening by means of a Operating tool, as described in detail below.

Bei der in Figur 1 ohne Isolierstoffgehäuse dargestellten Ausführungsform bildet die Betätigungslasche 15 alleinig die Betätigungseinrichtung. Sie kann von der Frontseite oder der gegenüberliegenden Rückseite der Federklemme her mittels eines einzusteckenden Betätigungswerkzeuges (nicht dargestellt) in ihrer Betätigungszone erreicht und mit dessen Hilfe so niedergedrückt werden, daß beim Öffnen des Anschlusses der elektrische Leiter 6 eingesteckt werden kann bzw. beim Wiederöffnen des Anschlusses die Klemmkante 8 in eine den elektrischen Leiter 6 freigebende und in keiner Weise beeinträchtigenden Lage überführt werden kann, so daß er problemlos aus dem Anschluß herausgezogen werden kann. Auf Seiten des Isolierstoffgehäuses sind neben der Einführungsöffnung für den elektrischen Leiter entsprechende Einführungsöffnungen für das Betätigungswerkzeug vorgesehen.In the embodiment shown in Figure 1 without an insulating housing the actuating tab 15 solely the actuating device. You can from the Front or the opposite back of the spring clip by means of a operating tool to be inserted (not shown) in its operating zone reached and with the help of it so depressed that when opening the connection of the electrical conductor 6 can be inserted or at Re-open the terminal 8 into an electrical conductor 6 releasing and in no way impairing situation can be transferred, so that it can be easily pulled out of the connector. On pages of the insulating housing are next to the insertion opening for the electrical Head appropriate insertion openings provided for the operating tool.

Wie in Figur 1 gezeigt, ist dabei zweckmäßig auch an dem Stromschienenstück 3 am vorderen Ende des oberen Schenkels 3a, also dort, wo der elektrische Leiter 6 einzuführen ist, eine Leitereinführphase 17 vorgeschrieben, die ein Aufspleißen fein- oder mehrdrähtiger Leiter beim Einführen verhindert. Bei einer derart betätigbaren Federklemme sind nicht nur mehrreihige, sondern auch mehretagige Anordnungen der Federklemmen möglich.As shown in FIG. 1, it is also expedient on the busbar section 3 at the front end of the upper leg 3a, i.e. where the electrical conductor 6 is to introduce a conductor insertion phase 17, which is a fanning out fine or multi-wire conductor prevented during insertion. With such an actuatable Spring clips are not only multi-row, but also multi-day arrangements of the spring clips possible.

Bei den Ausführungsformen nach den Figuren 2-5 beinhaltet die Betätigungseinrichtung auch im Isolierstoffgehäuse 1 der Federklemmen integrierte Betätigungselemente, mit denen im Sinne der vorgeschriebenen Öffnung bzw. Wiederöffnung der Klemmfeder auf die Betätigungszone 16 der Betätigungslasche 15 des Klemmschenkels 7 der Klemmfeder 5 eingewirkt werden kann. In the embodiments according to FIGS. 2-5, the actuating device includes actuating elements also integrated in the insulating housing 1 of the spring clips, with those in the sense of the prescribed opening or reopening the clamping spring on the actuation zone 16 of the actuation tab 15 of the clamping leg 7 of the clamping spring 5 can be acted on.

Bei dem Ausführungsbeispiel nach den Figuren 2 und 3 ist als im Isolierstoffgehäuse 1 integriertes Betätigungselement ein Exzenterhebel 18 vorgesehen, der drehbar im Isolierstoffgehäuse gelagert ist. Die Drehachse 19 des Exzenterhebels 18 liegt dabei im wesentlichen senkrecht über der Klemmstelle. In Verbindung mit der Lage der Betätigungszone 16 am Endabschnitt 11 des Klemmschenkels 7, die insoweit am weitesten vom fiktiven Drehpunkt des Klemmschenkels entfernt liegt, führt dieses Lageverhältnis unter Einschluß der Drehachse 19 dazu, daß die Relativbewegung zwischen der Wirkauflagestelle des Exzenterhebels 18 und der Betätigungszone 16 möglichst klein gehalten wird, was dazu führt, daß auch die Reibungskräfte möglichst klein gehalten werden können.In the embodiment of Figures 2 and 3 is as in the insulating housing 1 integrated actuator, an eccentric lever 18 is provided, which is rotatable is stored in the insulating housing. The axis of rotation 19 of the eccentric lever 18 lies thereby essentially perpendicularly above the clamping point. In connection with the location the actuation zone 16 at the end portion 11 of the clamping leg 7, to that extent furthest away from the fictitious pivot point of the clamping leg, this leads Positional relationship, including the axis of rotation 19, that the relative movement between the active position of the eccentric lever 18 and the actuation zone 16 is kept as small as possible, which also leads to the frictional forces can be kept as small as possible.

Dies wird auch durch den Vergleich der Figuren 2 und 3 augenfällig, da Figur 3 im Verhältnis zu Figur 2 den Exzenterhebel 18 und den Endbereich der Klemmfeder 7 in der Öffnungs- bzw. Wiederöffnungsstellung zeigt, in der der elektrische Leiter 6 eingesteckt bzw. wieder entnommen werden kann.This is also evident from the comparison of FIGS. 2 and 3, since FIG Relation to FIG. 2, the eccentric lever 18 and the end region of the clamping spring 7 in the opening or re-opening position, in which the electrical conductor 6 inserted or removed again.

Aus den Figuren 2 und 3 ist ferner ersichtlich, daß die im Isolierstoffgehäuse 1 vorgesehene Leitereinführungsöffnung 20 ebenfalls eine Einführungsphase 21 hat, so daß auch seitens des Isolierstoffgehäusees 1 ein Aufspleißen insbesondere von mehr- oder feindrähtigen Leitern vermieden werden kann.From Figures 2 and 3 it can also be seen that the provided in the insulating housing 1 Ladder insertion opening 20 also has an insertion phase 21, so that on the part of the Isolierstoffgehäusees 1 a splicing in particular of stranded or fine-stranded conductors can be avoided.

Bei dem Ausführungsbeispiel nach Figur 4 ist das integrierte Betätigungselement ein Schwenkhebel 22, dessen Drehachse 23 im wesentlichen in einer Verlängerung des Klemmschenkels 7 der Klemmfeder 5 in deren geöffnetem Zustand liegt. Auch diese Ausgestaltung und diese Lageverhältnisse des Angriffspunktes des Schwenkhebels 22 an der Betätigungszone 16 führen neben einem geringen Kraftaufwand infolge der Hebelverhältnisse zu einer deutlichen Reduzierung der Reibkräfte bei der Relativbewegung zwischen Betätigungszone und Wirkbereich des Schwenkhebels 22. In the embodiment of Figure 4 is the integrated actuator a pivot lever 22, the axis of rotation 23 of which is essentially in an extension of the clamping leg 7 of the clamping spring 5 is in its open state. Also this configuration and this position of the point of application of the pivot lever 22 on the actuation zone 16 lead in addition to a small effort due to the leverage ratio to a significant reduction in the frictional forces the relative movement between the actuation zone and the effective range of the swivel lever 22nd

Die Figur 5 zeigt als integriertes Betätigungselement einen weiteren Schwenkhebel 24, der die gleiche Drehachse 23 wie der Schwenkhebel 22 nach Figur 4 hat und der im übrigen auch die gleiche Ablaufgeometrie im Verhältnis zur Betätigungszone 16 der Klemmfeder wie der Schwenkhebel 22 hat. Die Lage seines Betätigungsendes ist aber im Verhältnis zur Lage des Betätigungsendes des Schwenkhebels 22 so verändert, daß sich hier im Verhältnis zueinander eine Verdrehung der Betätigungsrichtungen um ca. 90° ergibt. Wegen der gleichen Ablaufgeometrie und der gleichen Drehachsenlage sind die Schwenkhebel 22 und 24 austauschbar. Es lassen sich somit auf kostengünstige Weise entsprechend den verschiedenen Anwenderbedürfnissen und etwaigen unterschiedlichen Applikationen Bauvarianten für eine derartiger Federklemme erzeugen.FIG. 5 shows a further pivot lever as an integrated actuating element 24, which has the same axis of rotation 23 as the pivot lever 22 according to FIG. 4 and otherwise the same drain geometry in relation to the actuation zone 16 the clamping spring as the pivot lever 22 has. The location of its end of operation but is changed in relation to the position of the actuating end of the pivot lever 22 so that there is a rotation of the actuation directions in relation to each other 90 °. Because of the same drain geometry and the same The pivot levers 22 and 24 are interchangeable. It can be thus in a cost-effective manner according to the different user needs and any different applications, construction variants for such Generate spring clip.

Die jeweilige Hebelausführung und die jeweilige Hebellänge lassen sich unter Optimierung jeweils auf die Betätigungskräfte abstimmen.The respective lever design and the respective lever length can be optimized match the actuating forces.

Der Schwenkhebel 24 gemäß Ausführungsbeispiel nach Figur 5 trägt einen Betätigungsanschlag 26, für den gehäuseseitig ein Gegenlager vorgesehen ist. Mit der Begrenzung des Weges des Schwenkhebels wird gewährleistet, daß die Klemmfeder nicht überlastet werden kann. Auch alle anderen Hebelausführungen einschließlich des Exzenterhebels können mit entsprechenden Betätigungsanschlägen versehen sein.The pivot lever 24 according to the embodiment of Figure 5 carries an actuation stop 26, for which a counter bearing is provided on the housing side. With the Limiting the path of the pivot lever ensures that the clamp spring cannot be overloaded. All other lever designs including of the eccentric lever can be provided with appropriate actuation stops his.

Neben den vorstehend beschriebenen bevorzugten Ausführungsbeispielen können im Bedarfsfall als Betätigungselemente auch Schiebe- oder Druckelemente zum Einsatz kommen, die dann ihrerseits auch auf die Betätigungszone 16 der Betätigungslasche 15 am Klemmschenkel 7 der Klemmfeder 5 einwirken.In addition to the preferred exemplary embodiments described above if necessary as actuators also sliding or pushing elements Use come, which in turn then also on the actuation zone 16 of the actuating tab 15 act on the clamping leg 7 of the clamping spring 5.

Claims (14)

  1. Spring terminal for connecting electric wires, having an insulation housing (1) provided with at least one terminal compartment (2), in which is disposed a contact rail piece (3) with a leg (3A) for mounting the electric wire, in which is inserted a clamping spring (5), which is angled in shape so that the free end of its clamping leg forms a clamping edge (8) for hooking with the electric wire inserted in the connection position as well as an operating mechanism for re-opening the terminal, characterised in that the end of the clamping leg (7) of the clamping spring (5) on which the clamping edge (8) is provided has a double offset (10) with a first angled piece constituting an extension of the leg (3A) and a second angled piece leading to the leg (3A), the first angled piece and the second angled piece being bent so that the clamping edge (8) is no longer directed towards the leg (3A) in the re-opening position.
  2. Spring terminal as claimed in claim 1, characterised in that the double offset (10) forms an end portion (11) incorporating the clamping edge (8), which extends at least parallel with the leg (3A) in the re-opening position.
  3. Spring terminal as claimed in claim 1 or 2, characterised in that the clamping spring (5) is provided with an operating tab (15) on the free end of the clamping leg (7), the operating region (16) of which, as viewed from the point of rotation of the clamping leg (7), extends at least as far as the clamping edge (8) of the end portion (11).
  4. Spring terminal as claimed in claim 3, characterised in that the operating tab (15) is formed by a slit (14) in the free end of the clamping spring (5) and is bent farther in the direction away from the leg (3A) than the end portion (11) with the clamping edge (8).
  5. Spring terminal as claimed in claim 3 or 4, characterised in that the spring terminal has access openings for an operating tool at the same height as the operating tab (15) on the front face and rear face
  6. Spring terminal as claimed in one of claims 1-3, characterised in that the clamping spring (5) has a support leg (9), which is supported on a section (3b) of a contact rail part (3) and has an angled piece (12) at its rear region which forms a clearance (13) from the contact rail section (3b).
  7. Spring terminal as claimed in claim 6, characterised in that the clamping spring (5) is arranged so as to be retained of its own accord in a rail contact piece (3) with a U-shaped cross section, the support leg (9) of the clamping spring (5) being supported on the bottom leg (3b) of the contact rail part (3), whilst the clamping leg (7) clamps the electric wire against the top leg (3a) of the contact rail part (3).
  8. Spring terminal as claimed in claim 7, characterised in that the top leg (3a) of the contact rail part (3) has a wire introduction lead-in (17) on the end directed towards the wire insertion orifice.
  9. Spring terminal as claimed in claim 8, characterised in that a wire introduction lead-in (21) is also provided in the front-mounted insertion orifice (20) in the insulating housing (1) of the spring terminal.
  10. Spring terminal as claimed in claim 3, characterised in that an operating element (18, 22, 24) which acts on the operating region (16) of the operating tab (15) is provided in the spring terminal.
  11. Spring terminal as claimed in claim 10, characterised in that the operating element is an eccentric lever (18), the pivot axis (19) of which is disposed substantially vertically above the clamping point for the electric wire (6).
  12. Spring terminal as claimed in claim 10, characterised in that the operating lever is provided in the form of a pivot lever (22, 24), the pivot axis (23) of which lies substantially in the extension of the clamping spring (7) in its open position.
  13. Spring terminal as claimed in claim 12, characterised in that pivot levers (22 and 24) with the same pivot axis position and same operating geometry but with operating ranges rotated by approximately 90° relative to one another are provided for the terminal clamp.
  14. Spring terminal as claimed in claim 10, characterised in that the operating elements (18, 22, 24) mounted in the spring terminal have an operating stop (25) serving as an overload protection for the clamping spring (7).
EP00114747A 1999-09-03 2000-07-08 Spring clip for connectiong an electrical conductor Expired - Lifetime EP1081790B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29915515U DE29915515U1 (en) 1999-09-03 1999-09-03 Spring clip for connecting electrical conductors
DE29915515U 1999-09-03

Publications (3)

Publication Number Publication Date
EP1081790A2 EP1081790A2 (en) 2001-03-07
EP1081790A3 EP1081790A3 (en) 2002-04-10
EP1081790B1 true EP1081790B1 (en) 2003-03-12

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ID=8078434

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EP00114747A Expired - Lifetime EP1081790B1 (en) 1999-09-03 2000-07-08 Spring clip for connectiong an electrical conductor

Country Status (4)

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US (1) US6261120B1 (en)
EP (1) EP1081790B1 (en)
AT (1) ATE234518T1 (en)
DE (2) DE29915515U1 (en)

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Also Published As

Publication number Publication date
EP1081790A2 (en) 2001-03-07
EP1081790A3 (en) 2002-04-10
DE50001431D1 (en) 2003-04-17
ATE234518T1 (en) 2003-03-15
DE29915515U1 (en) 2001-02-01
US6261120B1 (en) 2001-07-17

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