EP2729992B1 - Clamping unit of an electrical connection terminal - Google Patents

Clamping unit of an electrical connection terminal Download PDF

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Publication number
EP2729992B1
EP2729992B1 EP12731462.3A EP12731462A EP2729992B1 EP 2729992 B1 EP2729992 B1 EP 2729992B1 EP 12731462 A EP12731462 A EP 12731462A EP 2729992 B1 EP2729992 B1 EP 2729992B1
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EP
European Patent Office
Prior art keywords
busbar
contact
clamping
spring
pin contact
Prior art date
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Active
Application number
EP12731462.3A
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German (de)
French (fr)
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EP2729992A1 (en
Inventor
Andreas Schrader
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.)
Phoenix Contact GmbH and Co KG
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Phoenix Contact GmbH and Co KG
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Publication of EP2729992A1 publication Critical patent/EP2729992A1/en
Application granted granted Critical
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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
    • 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
    • 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
    • H01R4/4846—Busbar details
    • H01R4/4848—Busbar integrally formed with 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
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/03—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations
    • H01R11/07—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations the connecting locations being of the same type but different sizes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
    • H01R4/4833—Sliding arrangements, e.g. sliding button

Definitions

  • the invention is directed to a clamping unit of an electrical terminal. Further, the invention is directed to an electrical terminal comprising such a clamping unit.
  • Electrical connection terminals which can be plugged onto a pin list with one or more pin contacts, can have conductor connection areas, which can fix a conductor to be connected by tightening a screw.
  • these pluggable screw terminals have the disadvantage that a direct connection of rigid conductors is not possible.
  • the operating cost and thus the conductor connection time in comparison to a spring-loaded terminal, in which the conductor is fixed instead of a screw with a clamping spring larger.
  • terminals are known, which in addition to the clamping spring have a contact tulip as StiftWallet istselement for contacting the pin contact of the pin header.
  • the clamping unit of an electrical terminal according to the invention is characterized in that it has compared to the known clamping units used in a terminal with a clamping spring and a StiftWallet istselement much smaller dimensions and thus a smaller size.
  • a conductor connected in the terminal can be positioned parallel to an inserted pin contact, whereby both the inserted conductor and the pin contact can rest on the same busbar to form a contact by the inventive design of the terminal.
  • the inserted conductor is thereby by means of the clamping spring to a first side surface of the busbar clamped and the inserted pin contact is held clamped by means of the spring arm to a second side surface of the bus bar opposite the first side face.
  • the inserted conductor is positioned immediately adjacent to the inserted pin contact, the conductor and the pin contact being separated from each other only by the bus bar.
  • the pin contact is held clamped by means of the spring arm, which is directly connected via the connecting piece to the busbar, in that the spring arm presses the pin contact against the busbar.
  • the clamping unit preferably has exactly one spring arm. The provision of two or more spring arms is not required here.
  • pin contacts with different diameters clamped in the clamping unit As a result, both pin contacts with a small diameter and pin contacts with a large diameter can be securely contacted in the clamping unit.
  • the pin contact can be easily inserted into the space between the busbar and the spring arm, wherein the spring arm can rebound as a function of the diameter of the pin contact.
  • the pin contact In the contacting state, ie when the pin contact rests against the busbar, the pin contact is preferably over with its longitudinal side surface the entire length of the busbar to the power rail. As a result, a particularly long contact area between the pin contact and the bus bar is made possible, whereby a long contact line for the transmission of current can be formed.
  • the terminal is characterized in that the plugging direction of the contact pin and the conductor and the operating direction for releasing the conductor are the same.
  • the connector is a bending joint.
  • the flexure allows an improved spring action of the spring arm to achieve a particularly flexible adaptability of the spring arm to the size of the inserted and to be connected pin contact.
  • the connecting piece or the bending joint is in this case preferably formed from a substantially semicircular shaped metal strip, which is arranged at a free end of the spring arm and a free end of the bus bar to connect the spring arm to the busbar.
  • the StiftCount istselement integral with the busbar is formed, so that the Stift mint michselement and the busbar are formed of the same material.
  • the connector and the spring arm are thus inventively formed as well as the busbar of a conductive metal, whereby higher transmissible currents can be achieved.
  • the clamping unit has a U-shaped contact pocket, which has a first leg and a first leg opposite the second leg, wherein the second leg forms the busbar.
  • the contact pocket forms a protected receiving space for the clamping spring and at the same time provides a bus bar and, when the bus bar is formed integrally with the pin contacting element, a pin contacting element is available.
  • the clamping pocket is preferably formed entirely of a conductive metal and can be positioned in an insulating housing of a terminal.
  • the clamping spring has a clamping leg and a support leg, wherein the clamping spring rests with its support leg areally on the first leg of the contact pocket. Due to the fact that the clamping spring flat with their support legs abuts the first leg of the contact pocket, the clamping spring is securely positioned in the contact pocket, so that in particular undesirable slipping of the clamping spring can be prevented. In addition, this can increase the clamping force of the clamping spring.
  • a clamping unit 1 according to an embodiment of the invention is shown.
  • the clamping unit 1 has a busbar 2, a clamping spring 3 for clamping a conductor, not shown here, to the busbar 2 and a StiftWallet istselement 4 for contacting a pin contact 5 of a pin header 6, as in Fig. 2 is shown on.
  • the Stift Membership istselement 4 has a spring arm 7, which is arranged substantially parallel to the busbar 2 and which is connected via a connecting piece 8 to the busbar 2.
  • the spring arm 7 is formed from a metal band, the longitudinal side surface of the longitudinal side surface of the busbar 2 is opposite. Between the spring arm 7 and the busbar 2 is a Receiving space 9 is formed, in which the pin contact 5 can be inserted, as shown in Fig. 2 is shown.
  • the receiving space 9 is in a non-use state, ie when no pin contact 5 is inserted, preferably smaller than the diameter of the pin contact to be contacted 5.
  • the spring arm 7 is further connected via the connecting piece 8 integral with the busbar 2, so that the spring arm 7 and the connecting piece 8 preferably made of the same material, a conductive Metal, as the busbar 2 are formed.
  • the connecting piece 8 is a bending joint which is formed from a substantially semicircularly bent metal band and has the same width as the spring arm 7.
  • the connecting piece 8 is arranged at a free end of the spring arm 7 and a free end of the bus bar 2 to the spring arm 7 to connect to the busbar 2.
  • the distance of the spring arm 7 to the busbar 2 can be changed by the spring arm 7 is moved away, for example, from the busbar 2, so that pin contacts 5 with different diameters safely by means of the spring arm 7 on the busbar 2 can be kept in contact.
  • the clamping unit 1 further has a U-shaped contact pocket 10, which is formed of a conductive metal.
  • the contact pocket 10 is formed from a base plate 11 and a first, preferably bent at right angles to the base plate 11 first leg 12 and a second, preferably bent at right angles to the base plate 11 leg 13.
  • the first leg 12 is formed opposite to the second leg 13.
  • the second leg 13 forms in this embodiment directly from the busbar 2, so that an additionally designed as a busbar 2 component is no longer necessary.
  • the clamping spring 3, which is designed as a leg spring and which has a contact leg 14 and a support leg 15 is arranged in the contact pocket 10 such that the clamping spring 3 rests with its support leg 15 flat against the first leg 12 of the contact pocket 10.
  • the contact pocket 10 forms an interior, which is bounded by the base plate 11, the first leg 12 and the second leg 13. Within this interior, the clamping spring 3 is arranged.
  • an inserted conductor is pressed against the busbar 2 and kept clamped.
  • Fig. 2 shows an electrical terminal 16 with a as in Fig. 1 shown clamping unit 1, wherein the clamping unit 1 is arranged in an insulating material 17 of the terminal 16. Furthermore, in Fig. 2 a pin header 6 with a plurality of pin contacts 5, wherein the electrical terminal 16 is placed for contacting the pin contacts 5 with its insulating 17 on the pin header 6, so that the pin contacts 5 each clamped in the receiving space formed between the busbar 2 and the spring arm 7 9 be held and contact the busbar 2.
  • a conductor to be clamped is introduced via a conductor insertion opening 18 formed in the insulating housing 17 into the clamping unit 1 into the area between the clamping spring 3, in particular the clamping leg 14 of the clamping spring 3, and the busbar 2 and clamped to the busbar 2.
  • An inserted conductor is thus positioned parallel to the pin contact 5 within the clamping unit 1, wherein both the inserted conductor and the pin contact 5 abut on one and the same busbar 2 for forming a contact.
  • the inserted conductor is thereby clamped by means of the clamping spring 3 to a first side surface 19 of the busbar 2 and the inserted pin contact 5 is held clamped by means of the spring arm 7 to one of the first side surface 19 opposite second side surface 20 of the busbar 2.
  • an actuating element 21 in the form of a pusher which are actuated by a tool can and can be pressed by means of which the contact leg 14 of the clamping spring 3 in the direction of Abstützschenkels 15 to give the clamped conductor free.
  • terminal 16 has three units, which are formed in the insulating housing 17, each unit having a Portereintechnologyö réelle 18, an actuator 12 and a clamping unit 1, so that with each unit a conductor with a pin contact 5 of the pin header 6 are contacted can.
  • LIST OF REFERENCE NUMBERS terminal unit 1 conductor rail 2 clamping spring 3 StiftWallet réelleselement 4 pin contact 5 pin header 6 spring arm 7 joint 8th accommodation space 9
  • Electrical connection unit 16 Insulated 17 Conductor insertion opening 18 First side surface 19 Second side surface 20 actuator 21

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  • Multi-Conductor Connections (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Description

Die Erfindung richtet sich auf eine Klemmeinheit einer elektrischen Anschlussklemme. Weiter richtet sich die Erfindung auf eine elektrische Anschlussklemme umfassend eine derartige Klemmeinheit.The invention is directed to a clamping unit of an electrical terminal. Further, the invention is directed to an electrical terminal comprising such a clamping unit.

Elektrische Anschlussklemmen, welche auf eine Stiftliste mit ein oder mehreren Stiftkontakten aufgesteckt werden können, können Leiteranschlussbereiche aufweisen, die durch Anziehen einer Schraube einen anzuschließenden Leiter fixieren können. Diese steckbaren Schraubklemmen haben jedoch den Nachteil, dass ein Direktanschluss von starren Leitern nicht möglich ist. Zudem ist der Betätigungsaufwand und damit die Leiteranschlusszeit im Vergleich zu einer Federkraftklemme, bei welcher der Leiter anstatt mit einer Schraube mit einer Klemmfeder fixiert wird, größer. Hierbei sind Anschlussklemmen bekannt, welche zusätzlich zu der Klemmfeder eine Kontakttulpe als Stiftkontaktierungselement zum Kontaktieren des Stiftkontaktes der Stiftleiste aufweisen. Bei den bekannten Anschlussklemmen ist es jedoch nachteilig, dass die Klemmfeder und die Kontakttulpe normalerweise untereinander angeordnet sind, wie dies beispielsweise in der DE 10 2006 014 646 A1 beschrieben ist, was zu einem erhöhten Platzbedarf führt. DE 22 25 591 A1 und EP 1 168 505 A2 offenbaren jeweils eine Klemmeinheit gemäß des Oberbegriffs von Anspruch 1. Der Erfindung liegt daher die Aufgabe zu Grunde, eine Lösung zu schaffen, mittels welcher die Baugröße einer elektrischen Anschlussklemme wesentlich reduziert werden kann.Electrical connection terminals, which can be plugged onto a pin list with one or more pin contacts, can have conductor connection areas, which can fix a conductor to be connected by tightening a screw. However, these pluggable screw terminals have the disadvantage that a direct connection of rigid conductors is not possible. In addition, the operating cost and thus the conductor connection time in comparison to a spring-loaded terminal, in which the conductor is fixed instead of a screw with a clamping spring, larger. Here, terminals are known, which in addition to the clamping spring have a contact tulip as Stiftkontaktierungselement for contacting the pin contact of the pin header. In the known terminals, however, it is disadvantageous that the clamping spring and the contact tulip are usually arranged with each other, as for example in the DE 10 2006 014 646 A1 is described, which leads to an increased space requirement. DE 22 25 591 A1 and EP 1 168 505 A2 each disclose a clamping unit according to the preamble of claim 1. The invention is therefore based on the object to provide a solution by means of which the size of an electrical terminal can be substantially reduced.

Bei einer Klemmeinheit für eine elektrische Anschlussklemme der eingangs näher bezeichneten Art wird diese Aufgabe erfindungsgemäß dadurch gelöst, dass die elektrische Anschlussklemme die Merkmale von Anspruch aufweist. Bei einer elektrischen Anschlussklemme der eingangs näher bezeichneten Art wird diese Aufgabe erfindungsgemäß durch eine elektrische Anschlussklemme umfassend eine Klemmeinheit nach einem der Ansprüche 1 bis 3 gelöst.In a clamping unit for an electrical terminal of the type described in more detail, this task According to the invention solved in that the electrical connection terminal has the features of claim. In an electrical terminal of the type described in more detail above, this object is achieved by an electrical terminal comprising a clamping unit according to one of claims 1 to 3.

Zweckmäßige Ausgestaltungen und vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen beschrieben.Advantageous embodiments and advantageous developments of the invention are described in the subclaims.

Die Klemmeinheit einer elektrischen Anschlussklemme gemäß der Erfindung zeichnet sich dadurch aus, dass sie gegenüber den bekannten in einer Anschlussklemme verwendeten Klemmeinheiten mit einer Klemmfeder und einem Stiftkontaktierungselement wesentlich kleinere Abmessungen und damit eine geringere Baugröße aufweist. Bei der erfindungsgemäßen Anschlussklemme kann ein in der Anschlussklemme angeschlossener Leiter parallel zu einem eingeführten Stiftkontakt positioniert sein, wobei durch die erfindungsgemäße Ausbildung der Anschlussklemme sowohl der eingeführte Leiter als auch der Stiftkontakt an derselben Stromschiene zur Ausbildung einer Kontaktierung anliegen können. Der eingeführte Leiter wird dabei mittels der Klemmfeder an eine erste Seitenfläche der Stromschiene geklemmt und der eingeführte Stiftkontakt wird mittels des Federarmes an eine der ersten Seitenfläche gegenüberliegenden zweiten Seitenfläche der Stromschiene geklemmt gehalten. Dadurch ist es möglich, dass der eingeführte Leiter unmittelbar neben dem eingeführten Stiftkontakt positioniert ist, wobei der Leiter und der Stiftkontakt nur durch die Stromschiene voneinander getrennt sind. Hierdurch kann ein sehr kurzer Stromweg vom Leiter zum Kontaktstift erreicht werden, was zu einem verringerten Spannungsabfall und einer gleichzeitig reduzierten Bauhöhe der Anschlussklemme führt. Der Stiftkontakt wird mittels des Federarmes, welcher unmittelbar über das Verbindungsstück mit der Stromschiene verbunden ist, geklemmt gehalten, indem der Federarm den Stiftkontakt gegen die Stromschiene drückt. Hierbei weist die Klemmeinheit vorzugsweise genau einen Federarm auf. Das Vorsehen von zwei oder mehr Federarmen ist hier nicht erforderlich. Durch das Vorsehen eines relativ zu der Stromschiene elastisch bewegbaren Federarmes ist es möglich, den Abstand zwischen der Stromschiene und dem Federarm in Abhängigkeit der Anforderungen anzupassen. Dadurch ist es möglich, Stiftkontakte mit unterschiedlichen Durchmessern in der Klemmeinheit geklemmt zu halten. Dadurch können sowohl Stiftkontakte mit einem kleinen Durchmesser als auch Stiftkontakte mit einem großen Durchmesser sicher in der Klemmeinheit kontaktiert werden. Zum Anschließen des Stiftkontaktes kann der Stiftkontakt leicht in den Freiraum zwischen der Stromschiene und dem Federarm eingeschoben werden, wobei der Federarm in Abhängigkeit des Durchmessers des Stiftkontaktes ausfedern kann. Im kontaktierenden Zustand, d. h. wenn der Stiftkontakt an der Stromschiene anliegt, liegt der Stiftkontakt mit seiner Längsseitenfläche vorzugsweise über die gesamte Länge der Stromschiene an der Stromschiene an. Dadurch wird eine besonders lange Kontaktfläche zwischen dem Stiftkontakt und der Stromschiene ermöglicht, wodurch eine lange Kontaktlinie zur Übertragung von Strom ausgebildet werden kann. Dies ermöglicht eine sichere Stromübertragung auch bei einer geringen Flächenpressung, welche durch die Andruckkraft des Federarmes des Stiftkontaktierungselementes auf den Stiftkontakt erzeugt wird. Da somit aufgrund der Ausgestaltung des Stiftkontaktierungselementes mit dem Federam nur eine relativ geringe Flächenpressung für eine sichere Kontaktierung notwendig ist, kann der Verschleiß des Stiftkontaktes, der durch ein häufiges einführen und lösen des Stiftkontaktes hervorgerufen wird, wesentlich reduziert werden. Ferner zeichnet sich die Anschlussklemme dadurch aus, dass die Steckrichtung des Kontaktstiftes und des Leiters sowie die Bedienrichtung zum Lösen des Leiters gleich sind.The clamping unit of an electrical terminal according to the invention is characterized in that it has compared to the known clamping units used in a terminal with a clamping spring and a Stiftkontaktierungselement much smaller dimensions and thus a smaller size. In the terminal according to the invention, a conductor connected in the terminal can be positioned parallel to an inserted pin contact, whereby both the inserted conductor and the pin contact can rest on the same busbar to form a contact by the inventive design of the terminal. The inserted conductor is thereby by means of the clamping spring to a first side surface of the busbar clamped and the inserted pin contact is held clamped by means of the spring arm to a second side surface of the bus bar opposite the first side face. Thereby, it is possible that the inserted conductor is positioned immediately adjacent to the inserted pin contact, the conductor and the pin contact being separated from each other only by the bus bar. This allows a very short current path from the conductor to the contact pin can be achieved, resulting in a reduced voltage drop and a reduced height of the terminal. The pin contact is held clamped by means of the spring arm, which is directly connected via the connecting piece to the busbar, in that the spring arm presses the pin contact against the busbar. In this case, the clamping unit preferably has exactly one spring arm. The provision of two or more spring arms is not required here. By providing a relative to the busbar elastically movable spring arm, it is possible to adjust the distance between the busbar and the spring arm depending on the requirements. This makes it possible to keep pin contacts with different diameters clamped in the clamping unit. As a result, both pin contacts with a small diameter and pin contacts with a large diameter can be securely contacted in the clamping unit. To connect the pin contact the pin contact can be easily inserted into the space between the busbar and the spring arm, wherein the spring arm can rebound as a function of the diameter of the pin contact. In the contacting state, ie when the pin contact rests against the busbar, the pin contact is preferably over with its longitudinal side surface the entire length of the busbar to the power rail. As a result, a particularly long contact area between the pin contact and the bus bar is made possible, whereby a long contact line for the transmission of current can be formed. This allows a safe power transmission even at a low surface pressure, which is generated by the pressing force of the spring arm of the Stiftkontaktierungselementes on the pin contact. Since only a relatively small surface pressure for a secure contact is thus necessary due to the design of the Stiftkontaktierungselementes with the Federam, the wear of the pin contact, which is caused by a frequent insertion and release of the pin contact, can be substantially reduced. Furthermore, the terminal is characterized in that the plugging direction of the contact pin and the conductor and the operating direction for releasing the conductor are the same.

Nach einer bevorzugten Ausgestaltung der Anschlussklemme ist das Verbindungsstück ein Biegegelenk. Das Biegegelenk ermöglicht eine verbesserte Federwirkung des Federarmes, um eine besonders flexible Anpassbarkeit des Federarmes an die Größe des einzuführenden und anzuschließenden Stiftkontaktes zu erreichen. Das Verbindungsstück bzw. das Biegegelenk ist hierbei vorzugsweise aus einem im wesentlichen halbkreisförmig geformten Metallband ausgebildet, welches an einem freien Ende des Federarmes und einem freien Ende der Stromschiene angeordnet ist, um den Federarm mit der Stromschiene zu verbinden.According to a preferred embodiment of the terminal, the connector is a bending joint. The flexure allows an improved spring action of the spring arm to achieve a particularly flexible adaptability of the spring arm to the size of the inserted and to be connected pin contact. The connecting piece or the bending joint is in this case preferably formed from a substantially semicircular shaped metal strip, which is arranged at a free end of the spring arm and a free end of the bus bar to connect the spring arm to the busbar.

Weiter ist es erfindungsgemäß vorgesehen, dass das Stiftkontaktierungselement einstückig mit der Stromschiene ausgebildet ist, so dass das Stiftkontaktierungselement und die Stromschiene aus demselben Material ausgebildet sind. Das Verbindungsstück und der Federarm sind somit erfindungsgemäß ebenso wie die Stromschiene aus einem leitenden Metall ausgebildet, wodurch höhere übertragbare Stromstärken erreicht werden können. Weiter ist es erfindungsgemäß vorgesehen, dass die Klemmeinheit eine u-förmig ausgebildete Kontakttasche aufweist, welche einen ersten Schenkel und einen dem ersten Schenkel gegenüberliegenden zweiten Schenkel aufweist, wobei der zweite Schenkel die Stromschiene ausbildet. Die Kontakttasche bildet einen geschützten Aufnahmeraum für die Klemmfeder und stellt gleichzeitig eine Stromschiene und bei einer einstückigen Ausbildung der Stromschiene mit dem Stiftkontaktierungselement ein Stiftkontaktierungselement zur Verfügung. Dadurch kann eine besonders kompakte Klemmeinheit und damit auch eine besonders kompakt ausgebildete Anschlussklemme zur Verfügung gestellt werden. Zudem kann die Anzahl der notwendigen Bauteile reduziert werden und die Anordnung der einzelnen Bauteile zueinander ist in einem festgelegten Rahmen verrutschsicher möglich. Die Klemmtasche ist vorzugsweise vollständig aus einem leitenden Metall ausgebildet und kann in einem Isolierstoffgehäuse einer Anschlussklemme positioniert werden.Further, it is inventively provided that the Stiftkontaktierungselement integral with the busbar is formed, so that the Stiftkontaktierungselement and the busbar are formed of the same material. The connector and the spring arm are thus inventively formed as well as the busbar of a conductive metal, whereby higher transmissible currents can be achieved. Further, it is inventively provided that the clamping unit has a U-shaped contact pocket, which has a first leg and a first leg opposite the second leg, wherein the second leg forms the busbar. The contact pocket forms a protected receiving space for the clamping spring and at the same time provides a bus bar and, when the bus bar is formed integrally with the pin contacting element, a pin contacting element is available. As a result, a particularly compact clamping unit and thus also a particularly compact connection terminal can be provided. In addition, the number of necessary components can be reduced and the arrangement of the individual components to each other in a fixed frame is possible slip-proof. The clamping pocket is preferably formed entirely of a conductive metal and can be positioned in an insulating housing of a terminal.

Ferner ist es vorzugsweise vorgesehen, dass die Klemmfeder einen Klemmschenkel und einen Abstützschenkel aufweist, wobei die Klemmfeder mit ihrem Abstützschenkel flächig an dem ersten Schenkel der Kontakttasche anliegt. Dadurch, dass die Klemmfeder mit ihrem Abstützschenkel flächig an dem ersten Schenkel der Kontakttasche anliegt, ist die Klemmfeder sicher in der Kontakttasche positioniert, so dass insbesondere ein unerwünschtes Verrutschen der Klemmfeder verhindert werden kann. Zudem kann hierdurch die Klemmkraft der Klemmfeder erhöht werden.Furthermore, it is preferably provided that the clamping spring has a clamping leg and a support leg, wherein the clamping spring rests with its support leg areally on the first leg of the contact pocket. Due to the fact that the clamping spring flat with their support legs abuts the first leg of the contact pocket, the clamping spring is securely positioned in the contact pocket, so that in particular undesirable slipping of the clamping spring can be prevented. In addition, this can increase the clamping force of the clamping spring.

Nachfolgend wird die Erfindung unter Bezugnahme auf die anliegenden Zeichnungen anhand einer bevorzugten Ausführungsform näher erläutert.The invention will be explained in more detail below with reference to the accompanying drawings with reference to a preferred embodiment.

Es zeigen:

Fig. 1
eine schematische Darstellung einer Klemmeinheit gemäß der Erfindung, und
Fig. 2
eine schematische Darstellung einer elektrischen Anschlussklemme gemäß der Erfindung.
Show it:
Fig. 1
a schematic representation of a clamping unit according to the invention, and
Fig. 2
a schematic representation of an electrical terminal according to the invention.

In Fig. 1 ist eine Klemmeinheit 1 gemäß einer Ausführungsform der Erfindung gezeigt. Die Klemmeinheit 1 weist eine Stromschiene 2, eine Klemmfeder 3 zum Klemmen eines hier nicht gezeigten Leiters an der Stromschiene 2 und ein Stiftkontaktierungselement 4 zum Kontaktieren eines Stiftkontaktes 5 einer Stiftleiste 6, wie es in Fig. 2 gezeigt ist, auf.In Fig. 1 a clamping unit 1 according to an embodiment of the invention is shown. The clamping unit 1 has a busbar 2, a clamping spring 3 for clamping a conductor, not shown here, to the busbar 2 and a Stiftkontaktierungselement 4 for contacting a pin contact 5 of a pin header 6, as in Fig. 2 is shown on.

Das Stiftkontaktierungselement 4 weist einen Federarm 7 auf, welcher im Wesentlichen parallel zu der Stromschiene 2 angeordnet ist und welcher über ein Verbindungsstück 8 mit der Stromschiene 2 verbunden ist. Der Federarm 7 ist aus einem Metallband ausgebildet, dessen Längsseitenfläche der Längsseitenfläche der Stromschiene 2 gegenüberliegt. Zwischen dem Federarm 7 und der Stromschiene 2 ist ein Aufnahmeraum 9 ausgebildet, in welchen der Stiftkontakt 5 eingeführt werden kann, wie dies in Fig. 2 gezeigt ist. Der Aufnahmeraum 9 ist in einem Nichtgebrauchszustand, d. h. wenn kein Stiftkontakt 5 eingeführt ist, vorzugsweise kleiner als der Durchmesser des zu kontaktierenden Stiftkontaktes 5. Beim Einführen des Stiftkontaktes 5 in den Aufnahmeraum 9 wird dadurch der Federarm 7 gegen die Federkraft nach außen, von der Stromschiene 2 weggedrückt, so dass der Federarm 7 eine Klemmkraft auf den Stiftkontakt 5 aufbringen kann. Der in den Aufnahmeraum 9 eingeführte Stiftkontakt 5 wird dadurch mittels des Federarmes 7 an die Stromschiene 2 gedrückt, so dass der Stiftkontakt 5 vorzugsweise über die gesamte Länge der Stromschiene 2 an der Stromschiene 2 flächig anliegt, so dass eine möglichst große Kontaktfläche zwischen dem Stiftkontakt 5 und der Stromschiene 2 ausgebildet wird. Der Federarm 7 erstreckt sich vorzugsweis über ungefähr 2/3 der Länge der Stromschiene 2. Der Federarm 7 ist ferner über das Verbindungsstück 8 einstückig mit der Stromschiene 2 verbunden, so dass der Federarm 7 und das Verbindungsstück 8 vorzugsweise aus dem gleichen Material, einem leitenden Metall, wie die Stromschiene 2 ausgebildet sind. Das Verbindungsstück 8 ist ein Biegegelenk, welches aus einem im Wesentlichen halbkreisförmig gebogenen Metallband ausgebildet ist und die gleiche Breite aufweist wie der Federarm 7. Das Verbindungsstück 8 ist an einem freien Ende des Federarmes 7 und einem freien Ende der Stromschiene 2 angeordnet, um den Federarm 7 mit der Stromschiene 2 zu verbinden. Durch das als Biegegelenk ausgebildete Verbindungsstück 8 kann der Abstand des Federarmes 7 zu der Stromschiene 2 verändert werden, indem der Federarm 7 beispielsweise von der Stromschiene 2 wegbewegt wird, so dass Stiftkontakte 5 mit unterschiedlichsten Durchmessern sicher mittels des Federarmes 7 an der Stromschiene 2 kontaktierend gehalten werden können.The Stiftkontaktierungselement 4 has a spring arm 7, which is arranged substantially parallel to the busbar 2 and which is connected via a connecting piece 8 to the busbar 2. The spring arm 7 is formed from a metal band, the longitudinal side surface of the longitudinal side surface of the busbar 2 is opposite. Between the spring arm 7 and the busbar 2 is a Receiving space 9 is formed, in which the pin contact 5 can be inserted, as shown in Fig. 2 is shown. The receiving space 9 is in a non-use state, ie when no pin contact 5 is inserted, preferably smaller than the diameter of the pin contact to be contacted 5. When inserting the pin contact 5 in the receiving space 9 is thereby the spring arm 7 against the spring force to the outside, from the busbar 2 pushed away, so that the spring arm 7 can apply a clamping force on the pin contact 5. The inserted into the receiving space 9 pin contact 5 is thereby pressed by means of the spring arm 7 to the busbar 2, so that the pin contact 5 preferably over the entire length of the busbar 2 to the busbar 2 is applied flat, so that the largest possible contact area between the pin contact. 5 and the bus bar 2 is formed. The spring arm 7 preferably extends over approximately 2/3 of the length of the busbar 2. The spring arm 7 is further connected via the connecting piece 8 integral with the busbar 2, so that the spring arm 7 and the connecting piece 8 preferably made of the same material, a conductive Metal, as the busbar 2 are formed. The connecting piece 8 is a bending joint which is formed from a substantially semicircularly bent metal band and has the same width as the spring arm 7. The connecting piece 8 is arranged at a free end of the spring arm 7 and a free end of the bus bar 2 to the spring arm 7 to connect to the busbar 2. By formed as a bending joint connector 8, the distance of the spring arm 7 to the busbar 2 can be changed by the spring arm 7 is moved away, for example, from the busbar 2, so that pin contacts 5 with different diameters safely by means of the spring arm 7 on the busbar 2 can be kept in contact.

Die Klemmeinheit 1 weist ferner eine u-förmig ausgebildete Kontakttasche 10 auf, welche aus einem leitenden Metall ausgebildet ist. Die Kontakttasche 10 ist aus einer Grundplatte 11 und einem ersten, vorzugsweise im rechten Winkel von der Grundplatte 11 abgebogenen ersten Schenkel 12 und einem zweiten, vorzugsweise im rechten Winkel von der Grundplatte 11 abgebogenen Schenkel 13 ausgebildet. Der erste Schenkel 12 ist gegenüberliegend zu dem zweiten Schenkel 13 ausgebildet. Der zweite Schenkel 13 bildet bei dieser Ausführungsform unmittelbar die Stromschiene 2 aus, so dass ein zusätzlich als Stromschiene 2 ausgebildetes Bauteil nicht mehr notwendig ist. Die Klemmfeder 3, die als Schenkelfeder ausgebildet ist und welche einen Kontaktschenkel 14 und einen Abstützschenkel 15 aufweist, ist derart in der Kontakttasche 10 angeordnet, dass die Klemmfeder 3 mit ihrem Abstützschenkel 15 flächig an dem ersten Schenkel 12 der Kontakttasche 10 anliegt. Die Kontakttasche 10 bildet einen Innenraum, welcher durch die Grundplatte 11, den ersten Schenkel 12 und den zweiten Schenkel 13 begrenzt ist. Innerhalb dieses Innenraumes ist die Klemmfeder 3 angeordnet. Das Stiftkontaktierungselement 4 mit seinem Federarm 7 und dem Verbindungsstück 8 ist hingegen außerhalb des Innenraumes der Kontakttasche 10 angeordnet, wobei das Stiftkontaktierungselement 4 über den als Stromschiene 2 ausgebildeten zweiten Schenkel 13 unmittelbar, vorzugsweise einstückig, mit der Kontakttasche 10 verbunden ist. Mittels des Klemmschenkels 14 der Klemmfeder 3 wird ein eingeführter Leiter an die Stromschiene 2 gedrückt und geklemmt gehalten.The clamping unit 1 further has a U-shaped contact pocket 10, which is formed of a conductive metal. The contact pocket 10 is formed from a base plate 11 and a first, preferably bent at right angles to the base plate 11 first leg 12 and a second, preferably bent at right angles to the base plate 11 leg 13. The first leg 12 is formed opposite to the second leg 13. The second leg 13 forms in this embodiment directly from the busbar 2, so that an additionally designed as a busbar 2 component is no longer necessary. The clamping spring 3, which is designed as a leg spring and which has a contact leg 14 and a support leg 15 is arranged in the contact pocket 10 such that the clamping spring 3 rests with its support leg 15 flat against the first leg 12 of the contact pocket 10. The contact pocket 10 forms an interior, which is bounded by the base plate 11, the first leg 12 and the second leg 13. Within this interior, the clamping spring 3 is arranged. The Stiftkontaktierungselement 4 with its spring arm 7 and the connecting piece 8, however, is disposed outside the interior of the contact pocket 10, wherein the Stiftkontaktierungselement 4 via the busbar 2 formed as a second leg 13 is directly, preferably integrally connected to the contact pocket 10. By means of the clamping leg 14 of the clamping spring 3, an inserted conductor is pressed against the busbar 2 and kept clamped.

Fig. 2 zeigt eine elektrische Anschlussklemme 16 mit einer wie in Fig. 1 gezeigten Klemmeinheit 1, wobei die Klemmeinheit 1 in einem Isolierstoffgehäuse 17 der Anschlussklemme 16 angeordnet ist. Ferner ist in Fig. 2 eine Stiftleiste 6 mit mehreren Stiftkontakten 5 gezeigt, wobei die elektrische Anschlussklemme 16 zur Kontaktierung der Stiftkontakte 5 mit ihrem Isolierstoffgehäuse 17 auf die Stiftleiste 6 aufgesetzt ist, so dass die Stiftkontakte 5 jeweils in dem zwischen der Stromschiene 2 und dem Federarm 7 gebildeten Aufnahmeraum 9 geklemmt gehalten werden und mit der Stromschiene 2 kontaktieren. Ein zu klemmender Leiter wird über eine in dem Isolierstoffgehäuse 17 ausgebildete Leitereinführöffnung 18 in die Klemmeinheit 1 in den Bereich zwischen der Klemmfeder 3, insbesondere dem Klemmschenkel 14 der Klemmfeder 3, und der Stromschiene 2 eingeführt und an der Stromschiene 2 geklemmt gehalten. Ein eingeführter Leiter ist somit parallel zu dem Stiftkontakt 5 innerhalb der Klemmeinheit 1 positioniert, wobei sowohl der eingeführte Leiter als auch der Stiftkontakt 5 an ein und derselben Stromschiene 2 zur Ausbildung einer Kontaktierung anliegen. Der eingeführte Leiter wird dabei mittels der Klemmfeder 3 an eine erste Seitenfläche 19 der Stromschiene 2 geklemmt und der eingeführte Stiftkontakt 5 wird mittels des Federarmes 7 an eine der ersten Seitenfläche 19 gegenüberliegenden zweiten Seitenfläche 20 der Stromschiene 2 geklemmt gehalten. Dadurch ist es möglich, dass der eingeführte Leiter unmittelbar neben dem eingeführten Stiftkontakt 5 positioniert ist, wobei der Leiter und der Stiftkontakt 5 nur durch die Stromschiene 2 voneinander getrennt sind. Zum Lösen des Leiters aus der Klemmeinheit 1 weist die Anschlussklemme 16 ein Betätigungselement 21 in Form eines Drückers auf, welcher mit einem Werkzeug betätigt werden kann und mittels dem der Kontaktschenkel 14 der Klemmfeder 3 in Richtung des Abstützschenkels 15 gedrückt werden kann, um den eingeklemmten Leiter frei zu geben. Fig. 2 shows an electrical terminal 16 with a as in Fig. 1 shown clamping unit 1, wherein the clamping unit 1 is arranged in an insulating material 17 of the terminal 16. Furthermore, in Fig. 2 a pin header 6 with a plurality of pin contacts 5, wherein the electrical terminal 16 is placed for contacting the pin contacts 5 with its insulating 17 on the pin header 6, so that the pin contacts 5 each clamped in the receiving space formed between the busbar 2 and the spring arm 7 9 be held and contact the busbar 2. A conductor to be clamped is introduced via a conductor insertion opening 18 formed in the insulating housing 17 into the clamping unit 1 into the area between the clamping spring 3, in particular the clamping leg 14 of the clamping spring 3, and the busbar 2 and clamped to the busbar 2. An inserted conductor is thus positioned parallel to the pin contact 5 within the clamping unit 1, wherein both the inserted conductor and the pin contact 5 abut on one and the same busbar 2 for forming a contact. The inserted conductor is thereby clamped by means of the clamping spring 3 to a first side surface 19 of the busbar 2 and the inserted pin contact 5 is held clamped by means of the spring arm 7 to one of the first side surface 19 opposite second side surface 20 of the busbar 2. This makes it possible that the inserted conductor is positioned immediately adjacent to the inserted pin contact 5, wherein the conductor and the pin contact 5 are separated from each other only by the busbar 2. To release the conductor from the clamping unit 1, the terminal 16, an actuating element 21 in the form of a pusher, which are actuated by a tool can and can be pressed by means of which the contact leg 14 of the clamping spring 3 in the direction of Abstützschenkels 15 to give the clamped conductor free.

Die in Fig. 2 gezeigte Anschlussklemme 16 weist drei Einheiten auf, welche in dem Isolierstoffgehäuse 17 ausgebildet sind, wobei jede Einheit eine Leitereinführöffnung 18, ein Betätigungselement 12 und eine Klemmeinheit 1 aufweisen, so dass mit jeder Einheit jeweils ein Leiter mit einem Stiftkontakt 5 der Stiftleiste 6 kontaktierend verbunden werden kann. Bezugszeichenliste Klemmeinheit 1 Stromschiene 2 Klemmfeder 3 Stiftkontaktierungselement 4 Stiftkontakt 5 Stiftleiste 6 Federarm 7 Verbindungsstück 8 Aufnahmeraum 9 Kontakttasche 10 Grundplatte 11 Erster Schenkel 12 Zweiter Schenkel 13 Klemmschenkel 14 Abstützschenkel 15 Elektrische Anschlusseinheit 16 Isolierstoffgehäuse 17 Leitereinführöffnung 18 Erste Seitenfläche 19 Zweite Seitenfläche 20 Betätigungselement 21 In the Fig. 2 shown terminal 16 has three units, which are formed in the insulating housing 17, each unit having a Leitereinführöffnung 18, an actuator 12 and a clamping unit 1, so that with each unit a conductor with a pin contact 5 of the pin header 6 are contacted can. LIST OF REFERENCE NUMBERS terminal unit 1 conductor rail 2 clamping spring 3 Stiftkontaktierungselement 4 pin contact 5 pin header 6 spring arm 7 joint 8th accommodation space 9 Contact bag 10 baseplate 11 First leg 12 Second thigh 13 clamping leg 14 support leg 15 Electrical connection unit 16 Insulated 17 Conductor insertion opening 18 First side surface 19 Second side surface 20 actuator 21

Claims (4)

  1. Clamping unit (1) for an electrical connection terminal (16), having
    a busbar (2),
    a clamping spring (3) for clamping a conductor to the busbar (2), and
    a pin contact-making element (4) for making contact with a pin contact (5),
    wherein the pin contact-making element (4) is integrally formed with the busbar (2), and
    wherein the pin contact-making element (4) has a spring arm (7) which is arranged substantially parallel to the busbar (2) and which is connected to the busbar (2) by means of a connecting piece (8), wherein a conductor that is introduced is clampable by means of the clamping spring (3) on a first lateral face (19) of the busbar (2), and a pin contact that is introduced can be kept clamped to a second lateral face (20) of the same busbar (2), which second lateral face is opposite the first lateral face (19), by means of the spring arm (7) of the pin contact-making element (4), so that the conductor that is introduced can be positioned directly next to the pin contact that is introduced, the conductor and the pin contact being separated from one another only by the busbar (2),
    wherein the clamping unit (1) has a u-shaped contact pocket (10) which has a first limb (12) and a second limb (13) which is situated opposite the first limb (12), wherein the second limb (13) forms the busbar (2), characterized in that the contact pocket (10) forms a protected receiving space for the clamping spring (3), which is positioned in the contact pocket (10) as a separate component.
  2. Clamping unit (1) according to Claim 1, characterized in that the connecting piece (8) is a flexible joint.
  3. Clamping unit (1) according to Claim 1 or 2, characterized in that the clamping spring (3) has a clamping limb (14) and a supporting limb (15), wherein the clamping spring (3) bears, by way of its supporting limb (15), against the surface of the first limb (12) of the contact pocket (10).
  4. Electrical connection terminal (16) comprising a clamping unit (1) according to one of Claims 1 to 3.
EP12731462.3A 2011-07-04 2012-07-04 Clamping unit of an electrical connection terminal Active EP2729992B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011051536A DE102011051536A1 (en) 2011-07-04 2011-07-04 Clamping unit of an electrical terminal
PCT/EP2012/063022 WO2013004738A1 (en) 2011-07-04 2012-07-04 Clamping unit of an electrical connection terminal

Publications (2)

Publication Number Publication Date
EP2729992A1 EP2729992A1 (en) 2014-05-14
EP2729992B1 true EP2729992B1 (en) 2017-08-16

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ID=46456604

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EP12731462.3A Active EP2729992B1 (en) 2011-07-04 2012-07-04 Clamping unit of an electrical connection terminal

Country Status (7)

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US (1) US9225081B2 (en)
EP (1) EP2729992B1 (en)
JP (1) JP5739585B2 (en)
CN (1) CN103608970B (en)
DE (1) DE102011051536A1 (en)
IN (1) IN2014CN00830A (en)
WO (1) WO2013004738A1 (en)

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Also Published As

Publication number Publication date
WO2013004738A1 (en) 2013-01-10
EP2729992A1 (en) 2014-05-14
CN103608970A (en) 2014-02-26
DE102011051536A1 (en) 2013-01-10
IN2014CN00830A (en) 2015-04-03
US9225081B2 (en) 2015-12-29
JP2014523080A (en) 2014-09-08
US20140148067A1 (en) 2014-05-29
JP5739585B2 (en) 2015-06-24
CN103608970B (en) 2016-03-02

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