EP1641078B1 - Electrical connector or connecting terminal - Google Patents

Electrical connector or connecting terminal Download PDF

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Publication number
EP1641078B1
EP1641078B1 EP05018924A EP05018924A EP1641078B1 EP 1641078 B1 EP1641078 B1 EP 1641078B1 EP 05018924 A EP05018924 A EP 05018924A EP 05018924 A EP05018924 A EP 05018924A EP 1641078 B1 EP1641078 B1 EP 1641078B1
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EP
European Patent Office
Prior art keywords
clamping
leg
metal part
electrical conductor
recess
Prior art date
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Application number
EP05018924A
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German (de)
French (fr)
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EP1641078A3 (en
EP1641078A2 (en
Inventor
Heinz Reibke
Jürgen Feye-Hohmann
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 EP1641078A2 publication Critical patent/EP1641078A2/en
Publication of EP1641078A3 publication Critical patent/EP1641078A3/en
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Publication of EP1641078B1 publication Critical patent/EP1641078B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • 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
    • H01R4/48275—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 with an opening in the housing for insertion of a release tool

Definitions

  • the invention relates to an electrical connection or connection terminal with a clamping spring and a metal part, wherein the clamping spring and the metal part are arranged in a conductor insertion opening for insertion of an electrical conductor to be connected insulating housing, the clamping spring has a clamping leg and a plant leg and wherein the clamping leg and the metal part form a spring terminal connection for the electrical conductor to be connected.
  • connection or connection devices serve to produce an electrical connection or an electrical connection, namely to produce an electrically conductive connection between a contact element and a mating contact element, namely a galvanic connection. Whether in a particular case a connection device or a connection device is present, is functionally relatively irrelevant. From a connection device is often spoken when something portable is connected to something stationary, while often speaks of a connecting device then, if something portable with something Ortsbeweglichem or even if something stationary is connected to something stationary.
  • the metal part is formed as a multi-angled contact element that has a substantially perpendicular to the insertion of the conductor to be connected first profile section with a plug-in opening for the conductor to be connected and one of them in the insertion angled second profile section.
  • the substantially U-shaped clamping spring protrudes with its clamping leg through the insertion opening in the contact element, so that the end of the clamping leg presses an inserted into the insertion opening electrical conductor against the second profile section of the contact element.
  • the contact element and the clamping spring thus form a Federkraftklemmanschluß for an electrical conductor to be connected.
  • the clamping spring is thereby connected to the contact element, that the end of the second leg of the clamping spring is riveted above the insertion opening on the contact element.
  • the fixation of the clamping spring on the contact element by means of rivets is relatively cumbersome.
  • the size of the known terminal is relatively large, in particular, the terminal is relatively high, since the fixing of the second leg of the clamping spring above the insertion opening and the rear spring bow of the clamping spring is disposed substantially above the approximately L-shaped contact element.
  • an electrical connection terminal which also has a U-shaped open clamping spring and designed as a corner bracket busbar piece.
  • the busbar piece has a retaining leg arranged perpendicular to the conductor insertion direction and a contact leg. In the holding leg a rectangular opening is formed, through which the electrical conductor to be connected can be inserted.
  • the U-shaped clamping spring is inserted and held with the ends of their legs in the opening so that the rear spring bow of the clamping spring is in the conductor insertion direction in front of the opening and the clamping leg of the clamping spring presses an inserted electrical conductor against the contact leg, so that even at this known connector, the clamping spring and the busbar piece form a spring terminal connection.
  • the EP 1 391 965 A1 discloses a spring clamp terminal for an electrical conductor having a U-shaped clamping spring and a bus bar piece.
  • the busbar piece is made of a flat material and has a Porter whosteckö réelle in the form of a rectangular material passage having a Portereinsteckcardi extending hole collar, which forms the terminal point for the electrical conductor together with the end of the clamping leg of the clamping spring.
  • the clamping spring is inserted with the ends of their legs in the Porter sanggro réelle.
  • Similar electrical terminals, with a substantially U-shaped clamping spring and a metal part are also from the DE 203 12 861 U1 and the DE 202 10 105 U1 known. All these known terminals have in common that the clamping spring is inserted in an opening of the metal part, so that when opening the clamping spring there is a risk that the clamping spring slips.
  • loop-shaped clamping springs in electrical connection or connection terminals from the prior art for example, the DE 197 11 051 A1 or the DE 198 02 945 C2 , known, namely as so-called tension springs in tension spring terminals.
  • Spring-cage terminals have established themselves in the market over time in addition to screw terminals - and more recently, in addition to electrical terminals with insulation displacement technology - and are used in millions of cases, especially as terminal blocks.
  • the advantage of the spring clamp terminals compared to the screw terminals is that spring clamp terminals allow for faster and easier wiring. To actuate the tension spring clamp requires only one operating tool, such as a screwdriver, which is pressed to open the terminal in an operating shaft.
  • the tip of the screwdriver tensions the tension spring, which opens the clamping point.
  • a conductor to be connected can then be inserted through the recess in the clamping leg and is clamped after pulling out of the screwdriver by the lower edge of the recess against a busbar connected to the tension spring.
  • a particular embodiment of a tension spring clamp is from DE 35 14 099 C2 known.
  • This tension spring clamp next to a loop-shaped tension spring on a specially designed busbar with two lateral Aufkantungen, so that the busbar spaced from the plant leg of the tension spring extends.
  • this tension spring clamp in addition to the connection of a flexible conductor in the recess in the clamping leg additionally Solid conductor between the plant leg and the busbar are inserted. Since only a relatively small clamping force is applied to the solid conductor, which is plugged into the terminal parallel to the plant limb and to the busbar, the electrical connection is very much dependent on manufacturing tolerances and the diameter of the solid conductor.
  • tension spring clamp discloses the DE 199 03 965 A1 , In this tension spring clamp two electrical conductors can be inserted from the same side through the opening in the clamping leg, wherein a conductor is then arranged below and a conductor above the busbar. The arranged above the busbar conductor is pressed by the specially trained plant leg of the tension spring against the busbar.
  • the present invention has for its object to provide an electrical connection or connection terminal described above, which allows for the smallest possible size a simple yet secure fixation of the clamping spring, even with larger cross sections of the conductors to be connected.
  • the metal part is thus similar to that of the first EP 1 391 965 A1 known busbar piece.
  • this known busbar piece no material passage with a hole collar inner wall which extends in the insertion direction of the electrical conductor to be connected is provided in the current bar, but a fastening portion is punched out of the current bar and bent opposite to the insertion direction of the conductor to be connected.
  • the clamping spring is placed with her plant leg so on the current bar, that the recess in the plant leg and the recess in the current bar are aligned with each other, and the attachment portion of the current bar opposite protrudes to the insertion of the electrical conductor to be connected through the recess in the plant leg. As a result, a fixation of the clamping spring to the current bar is possible.
  • a second fastening portion is punched out of the current bar at the opposite end of the mounting portion of the recess and also bent opposite to the insertion direction of the electrical conductor to be connected.
  • the plant leg is inserted with its recess on the two mounting portions of the current bar and placed on the current bar.
  • the distance between the two mounting portions is chosen to correspond to the length of the recess in the plant leg, so that the clamping spring through the two through the recess in the Investment leg is inserted through fixing sections fixed on the current bar.
  • the metal part While in the last-described variant, in which the metal part is designed as a flat current bar, the metal part extends substantially perpendicular to the insertion direction of the conductor to be connected, the main extension direction of the first variant of the metal part is substantially parallel to the insertion direction of the conductor to be connected.
  • a holding portion of the plant leg of the clamping spring is punched free at the end of the clamping leg distal end of the recess and bent in the insertion direction of the electrical conductor to be connected.
  • the holding portion which is bent substantially perpendicular to the plant leg, serves for better fixation of the clamping spring on the metal part.
  • the holding section either extends through the recess in the current bar or the holding section engages behind a fastening section of the metal part. Due to the design of the holding section in particular a rotation of the clamping spring during insertion of an electrical conductor is prevented.
  • the attachment portion of the metal part is bent such that the attachment portion together with the end of the clamping leg of the clamping spring form an insertion funnel for the electrical conductor to be connected. Due to the design of the insertion funnel thus the tip of an inserted through the conductor insertion opening in the insulating electrical conductor is automatically positioned correctly, so that a simple and accurate connection of an electrical conductor to the electrical connection or connection terminal is possible.
  • the insulating housing has an actuating opening for insertion of an actuating tool and is formed on the clamping leg of the clamping spring a kink, in the direction of the spring force of Clamping leg is aligned so that the tip of the actuating tool to open the clamping spring can act on the kink.
  • the formed on the clamping leg kink allows easier engagement of the tip of the actuating tool on the clamping leg to open the clamping spring.
  • the insertion depth of the actuating tool required for completely opening the clamping spring can thereby be reduced into the actuating opening.
  • the Fig. 1 to 3 show a clamping spring 1 and a metal part 2 a - only in Fig. 1 shown in total - connection or connection terminal.
  • To the connection or connection terminal still includes a conductor insertion opening 3 for insertion of an electrical conductor 4 to be connected insulating housing 5, in which the clamping spring 1 and the metal part 2 are arranged.
  • the clamping spring 1 has a clamping leg 6, an abutment leg 7 and a back 8 connecting the clamping leg 6 and the abutment leg 7.
  • the abutment leg 7 of the clamping spring 1 is arranged substantially perpendicular to the insertion direction of the electrical conductor 4 to be connected in the insulating housing 5.
  • a recess 9 is formed for insertion of the electrical conductor 4 to be connected. If the electrical conductor 4 is inserted through the recess 9, the tip of the electrical conductor 4 is pressed by the end 10 of the clamping leg 6 against the metal part 2, whereby the electrical contacting of the conductor 4 with the metal part 2 is realized.
  • the clamping spring 1 thus has an approximately loop-shaped contour, wherein the bearing limb 7 and thus also the recess 9 extends substantially perpendicular to the insertion direction of the electrical conductor 4 to be connected.
  • the metal part 2 For mounting the clamping spring 1 on the metal part 2, the metal part 2 at least one mounting portion 11 which extends opposite to the insertion of the electrical conductor 4 to be connected through the recess 9, so that the clamping spring 1 with its recess 9 can be plugged onto the metal part 2 ,
  • the figures now show two fundamentally different embodiments of the metal part. 2
  • the metal part 2 two opposing legs 12, 13 and a leg 12, 13 connecting web 14 on.
  • the two legs 12, 13 extend substantially parallel to the insertion direction of the electrical conductor 4 to be connected, wherein the ends of the legs 12, 13 are each formed as mounting portions 11, 15, so that the clamping spring 1 with its recess 9, the two mounting portions 11, 15 of the metal part 2 engages like a frame.
  • the metal part 2 has a plug part 16 which comprises two soldering pins 17, so that the in Fig. 1 shown electrical terminal can be used as a printed circuit board for printed circuits.
  • the metal part 2 is formed as a flat current bar 18, in which a recess 19 for insertion of the electrical conductor 4 to be connected is arranged.
  • the fixing portion 11 for fixing the clamping spring 1 to the metal part 2 is punched out of the current bar 18 and bent opposite to the insertion direction of the electrical conductor 4 to be connected.
  • the attachment portion 11 corresponds to a portion of the material of the abutment leg 7, which is punched out of the plant leg 7 in the formation of the recess 9.
  • the recess 9 and the attachment portion 11 can be made particularly simple and save material by a punching and bending process.
  • the tip of the electrical conductor 4 When inserting an electrical conductor 4 through the recess 9, the tip of the electrical conductor 4 is pressed by the end 10 of the clamping leg 6 against the inner surface of the mounting portion 11, whereby the electrical contact between the electrical conductor 4 and the current bar 18 is produced.
  • the length of the fastening portion 11 can thus also the surface of the region of the current bar 18 are set, against which the tip of the electrical conductor 4 is pressed by the clamping leg 6.
  • FIG. 3 illustrated current bar 18 is in addition to the attachment portion 11 at the opposite end of the recess 19, a second attachment portion 15 punched out of the current bar 18 and bent.
  • the formation of two fastening portions 11, 15 on the current bar 18 improves the fixation of the clamping spring 1 on the current bar 18.
  • the two mounting portions 11, 15 are thereby surrounded by the recess 9 in the plant leg 7 like a frame.
  • an additional holding portion 20 is formed from the plant leg 7 on the clamping spring 1.
  • the holding portion 20 is punched free at the end 10 of the clamping leg 6 far end of the recess 9 and bent in the insertion direction of the electrical conductor 4 to be connected.
  • the holding portion 20 engages in the recess 19 in the current bar 18 a.
  • the clamping spring 1 is then attached to the current bar 18, that the attachment portion 1 of the current bar 18 engages in the recess 9 in the plant leg 7 and the holding portion 20 in the recess 19 in the current bar 18.
  • the retaining portion 20 is located from the outside to the second mounting portion 15 of the metal part 2, so that a twisting of the clamping spring 1 when connecting an electrical conductor 4 is prevented.
  • the mounting portion 11 of the metal part 2 is bent so that it forms an insertion funnel 21 for the electrical conductor 4 to be connected together with the end 10 of the clamping leg 6.
  • the insulating housing 5 has an actuating opening 22 for insertion of an actuating tool 23, for example, the tip of a screwdriver on. With the actuating tool 23 can then be pressed onto the clamping leg 6 of the clamping spring 1, whereby the clamping spring 1 opens, so that an electrical conductor 4 can be inserted or pulled out more easily.
  • the fixation of spring clip 1 and metal part 2 is particularly easy to produce, at the same time the clamping spring 1 and the metal part 2 itself can be made very simple and save material.
  • the metal part 2 is preferably made of a material with a good conductivity, for example, a copper alloy.
  • the clamping spring 1 can be made for example of spring steel.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Multi-Conductor Connections (AREA)
  • Conductive Materials (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

An electric connection/terminal has a clamping spring and a metal part which are located in an insulating housing (5), and are placed in a conductor insertion orifice for inserting an electric conductor to be connected. A positioning limb of the clamping spring is arranged mainly vertically to the direction of insertion of the electric conductor (4) and a recess (9) is provided for inserting the electric conductor (4). The metal part has two opposite-facing limbs (12,13) and a bridging piece (14) joining the two limbs, which extend mainly parallel to the direction of insertion of the electric conductor (4), and the ends of the limbs (12,13) are each designed as a fixture section (11,15), which are inserted through the recess (9) in a direction opposite to that of the electric conductor (4).

Description

Die Erfindung betrifft eine elektrische Anschluß- oder Verbindungsklemme mit einer Klemmfeder und mit einem Metallteil, wobei die Klemmfeder und das Metallteil in einem eine Leitereinführungsöffnung zum Einführen eines anzuschließenden elektrischen Leiters aufweisenden Isoliergehäuse angeordnet sind, die Klemmfeder einen Klemmschenkel und einen Anlageschenkel aufweist und wobei der Klemmschenkel und das Metallteil einen Federkraftklemmanschluß für den anzuschließenden elektrischen Leiter bilden.The invention relates to an electrical connection or connection terminal with a clamping spring and a metal part, wherein the clamping spring and the metal part are arranged in a conductor insertion opening for insertion of an electrical conductor to be connected insulating housing, the clamping spring has a clamping leg and a plant leg and wherein the clamping leg and the metal part form a spring terminal connection for the electrical conductor to be connected.

Elektrische Anschluß- oder Verbindungseinrichtungen dienen dazu, einen elektrischen Anschluß oder eine elektrische Verbindung herzustellen, nämlich zwischen einem Kontaktelement und einem Gegenkontaktelement eine elektrisch leitende Verbindung herzustellen, und zwar eine galvanische Verbindung. Ob im Einzelfall eine Anschlußeinrichtung oder eine Verbindungseinrichtung vorliegt, ist funktional relativ belanglos. Von einer Anschlußeinrichtung spricht man häufig dann, wenn etwas Ortsbewegliches an etwas Ortsfestes angeschlossen wird, während man von einer Verbindungseinrichtung häufig dann spricht, wenn etwas Ortsbewegliches mit etwas Ortsbeweglichem oder auch wenn etwas Ortsfestes mit etwas Ortsfestem verbunden wird.Electrical connection or connection devices serve to produce an electrical connection or an electrical connection, namely to produce an electrically conductive connection between a contact element and a mating contact element, namely a galvanic connection. Whether in a particular case a connection device or a connection device is present, is functionally relatively irrelevant. From a connection device is often spoken when something portable is connected to something stationary, while often speaks of a connecting device then, if something portable with something Ortsbeweglichem or even if something stationary is connected to something stationary.

Eine eingangs beschriebene elektrische Anschlußklemme ist beispielsweise aus der DE 101 03 107 A1 bekannt. Bei der bekannten Anschlußklemme ist das Metallteil als mehrfach abgewinkeltes Kontaktelement ausgebildet, daß einen im wesentlichen senkrecht zur Einsteckrichtung des anzuschließenden Leiters verlaufenden ersten Profilabschnitt mit einer Stecköffnung für den anzuschließenden Leiter und einen davon in Einsteckrichtung abgewinkelten zweiten Profilabschnitt aufweist. Die im wesentlichen U-förmig ausgebildete Klemmfeder ragt mit ihrem Klemmschenkel durch die Stecköffnung im Kontaktelement, so daß das Ende des Klemmschenkels einen in die Stecköffnung eingesteckten elektrischen Leiter gegen den zweiten Profilabschnitt des Kontaktelements drückt. Das Kontaktelement und die Klemmfeder bilden somit einen Federkraftklemmanschluß für einen anzuschließenden elektrischen Leiter.An electrical terminal described above is for example from the DE 101 03 107 A1 known. In the known terminal, the metal part is formed as a multi-angled contact element that has a substantially perpendicular to the insertion of the conductor to be connected first profile section with a plug-in opening for the conductor to be connected and one of them in the insertion angled second profile section. The substantially U-shaped clamping spring protrudes with its clamping leg through the insertion opening in the contact element, so that the end of the clamping leg presses an inserted into the insertion opening electrical conductor against the second profile section of the contact element. The contact element and the clamping spring thus form a Federkraftklemmanschluß for an electrical conductor to be connected.

Die Klemmfeder ist dabei dadurch mit dem Kontaktelement verbunden, daß das Ende des zweiten Schenkels der Klemmfeder oberhalb der Stecköffnung an dem Kontaktelement festgenietet ist. Bei der bekannten Anschlußklemme ist die Fixierung der Klemmfeder an dem Kontaktelement mittels Nieten relativ umständlich. Darüber hinaus ist die Baugröße der bekannten Anschlußklemme relativ groß, insbesondere ist die Anschlußklemme relativ hoch, da durch die Fixierung des zweiten Schenkels der Klemmfeder oberhalb der Stecköffnung auch der rückwärtige Federbogen der Klemmfeder im wesentlichen oberhalb des näherungsweise L-förmigen Kontaktelements angeordnet ist.The clamping spring is thereby connected to the contact element, that the end of the second leg of the clamping spring is riveted above the insertion opening on the contact element. In the known terminal, the fixation of the clamping spring on the contact element by means of rivets is relatively cumbersome. In addition, the size of the known terminal is relatively large, in particular, the terminal is relatively high, since the fixing of the second leg of the clamping spring above the insertion opening and the rear spring bow of the clamping spring is disposed substantially above the approximately L-shaped contact element.

Aus der DE 196 54 611 A1 ist eine elektrische Verbindungsklemme bekannt, die ebenfalls eine U-förmige offene Klemmfeder und ein als Eckwinkel ausgebildetes Stromschienenstück aufweist. Das Stromschienenstück weist einen senkrecht zur Leitereinführungsrichtung angeordneten Halteschenkel und einen Kontaktschenkel auf. In dem Halteschenkel ist eine rechteckförmige Öffnung ausgebildet ist, durch die der anzuschließende elektrische Leiter hindurchgesteckt werden kann. Die U-förmige Klemmfeder ist mit den Enden ihrer Schenkel derart in der Öffnung eingesetzt und gehalten, daß sich der rückwärtige Federbogen der Klemmfeder in Leitereinführungsrichtung vor der Öffnung befindet und der Klemmschenkel der Klemmfeder einen eingesteckten elektrischen Leiter gegen den Kontaktschenkel drückt, so daß auch bei diesem bekannten Steckverbinder die Klemmfeder und das Stromschienenstück einen Federkraftklemmanschluß bilden.From the DE 196 54 611 A1 an electrical connection terminal is known, which also has a U-shaped open clamping spring and designed as a corner bracket busbar piece. The busbar piece has a retaining leg arranged perpendicular to the conductor insertion direction and a contact leg. In the holding leg a rectangular opening is formed, through which the electrical conductor to be connected can be inserted. The U-shaped clamping spring is inserted and held with the ends of their legs in the opening so that the rear spring bow of the clamping spring is in the conductor insertion direction in front of the opening and the clamping leg of the clamping spring presses an inserted electrical conductor against the contact leg, so that even at this known connector, the clamping spring and the busbar piece form a spring terminal connection.

Die EP 1 391 965 A1 offenbart einen Federkraftklemmanschluß für einen elektrischen Leiter mit einer U-förmigen Klemmfeder und einem Stromschienenstück. Das Stromschienenstück ist dabei aus einem flachen Material gefertigt und besitzt eine Leiterdurchstecköffnung in Form eines rechteckigen Materialdurchzugs, der einen in Leitereinsteckrichtung sich erstreckenden Lochkragen aufweist, der zusammen mit dem Ende des Klemmschenkels der Klemmfeder die Klemmstelle für den elektrischen Leiter bildet. Auch bei diesem als flacher Strombalken ausgebildeten Stromschienenstück ist die Klemmfeder mit den Enden ihrer Schenkel in der Leiterdurchstecköffnung eingesetzt. Beim Öffnen der Klemmfeder besteht die Gefahr, daß die Klemmfeder verrutscht oder sogar mit den Enden ihrer Schenkel aus der Öffnung herausrutscht, so daß eine ordnungsgemäße Positionierung der Klemmfeder beim Einführen eines elektrischen Leiters und damit eine zuverlässige Kontaktierung des elektrischen Leiters unter Umständen nicht mehr gewährleistet ist.The EP 1 391 965 A1 discloses a spring clamp terminal for an electrical conductor having a U-shaped clamping spring and a bus bar piece. The busbar piece is made of a flat material and has a Leiterdurchstecköffnung in the form of a rectangular material passage having a Leitereinsteckrichtung extending hole collar, which forms the terminal point for the electrical conductor together with the end of the clamping leg of the clamping spring. Also in this designed as a flat current bar busbar piece, the clamping spring is inserted with the ends of their legs in the Leiterdurchstecköffnung. When opening the clamping spring there is a risk that the clamping spring slips or even with the ends of their legs from the opening slips out, so that a proper positioning of the clamping spring during insertion of an electrical conductor and thus reliable contact with the electrical conductor may no longer be guaranteed.

Ähnliche elektrische Anschlußklemmen, mit einer im wesentlichen U-förmige Klemmfeder und einem Metallteil sind auch aus der DE 203 12 861 U1 und der DE 202 10 105 U1 bekannt. All diesen bekannten Anschlußklemmen ist gemeinsam, daß die Klemmfeder in einer Öffnung des Metallteils eingesteckt ist, so daß beim Öffnen der Klemmfeder die Gefahr besteht, daß die Klemmfeder verrutscht.Similar electrical terminals, with a substantially U-shaped clamping spring and a metal part are also from the DE 203 12 861 U1 and the DE 202 10 105 U1 known. All these known terminals have in common that the clamping spring is inserted in an opening of the metal part, so that when opening the clamping spring there is a risk that the clamping spring slips.

Daneben sind auch schlaufenförmige Klemmfedern bei elektrischen Anschluß- oder Verbindungsklemmen aus dem Stand der Technik, beispielsweise der DE 197 11 051 A1 oder der DE 198 02 945 C2 , bekannt, nämlich als sogenannt Zugfedern in Zugfederklemmen. Zugfederklemmen haben sich im Laufe der Zeit neben Schraubklemmen - und seit kürzerer Zeit auch neben elektrischen Klemmen mit Schneid-Anschlußtechnik - am Markt etabliert und werden millionenfach insbesondere als Reihenklemmen verwendet. Der Vorteil der Zugfederklemmen im Vergleich zu den Schraubklemmen besteht darin, daß Zugfederklemmen eine schnellere und einfachere Verdrahtung ermöglichen. Zum Betätigen der Zugfederklemme benötigt man nur ein Betätigungswerkzeug, beispielsweise einen Schraubendreher, der zum Öffnen der Klemme in einen Betätigungsschacht gedrückt wird. Dabei spannt die Spitze des Schraubendrehers die Zugfeder, wodurch sich die Klemmstelle öffnet. Ein anzuschließender Leiter kann dann durch die Ausnehmung in den Klemmschenkel eingeführt werden und wird nach dem Herausziehen des Schraubendrehers durch die Unterkante der Ausnehmung gegen eine mit der Zugfeder verbundene Stromschiene geklemmt.In addition, loop-shaped clamping springs in electrical connection or connection terminals from the prior art, for example, the DE 197 11 051 A1 or the DE 198 02 945 C2 , known, namely as so-called tension springs in tension spring terminals. Spring-cage terminals have established themselves in the market over time in addition to screw terminals - and more recently, in addition to electrical terminals with insulation displacement technology - and are used in millions of cases, especially as terminal blocks. The advantage of the spring clamp terminals compared to the screw terminals is that spring clamp terminals allow for faster and easier wiring. To actuate the tension spring clamp requires only one operating tool, such as a screwdriver, which is pressed to open the terminal in an operating shaft. The tip of the screwdriver tensions the tension spring, which opens the clamping point. A conductor to be connected can then be inserted through the recess in the clamping leg and is clamped after pulling out of the screwdriver by the lower edge of the recess against a busbar connected to the tension spring.

Eine besondere Ausführungsform einer Zugfederklemme ist aus der DE 35 14 099 C2 bekannt. Diese Zugfederklemme weißt neben einer schlaufenförmigen Zugfeder eine besonders ausgebildete Stromschiene mit zwei seitlichen Aufkantungen auf, so daß die Stromschiene beabstandet vom Anlageschenkel der Zugfeder verläuft. Bei dieser Zugfederklemme kann neben dem Anschluß eines flexiblen Leiters in der Ausnehmung im Klemmschenkel zusätzlich ein Massivleiter zwischen dem Anlageschenkel und der Stromschiene eingeschoben werden. Da auf den Massivleiter, der parallel zum Anlageschenkel und zur Stromschiene in die Klemme eingesteckt wird, nur eine relativ geringe Klemmkraft wird, ist der elektrische Anschluß sehr stark von Fertigungstoleranzen und dem Durchmesser der Massivleiters abhängig.A particular embodiment of a tension spring clamp is from DE 35 14 099 C2 known. This tension spring clamp next to a loop-shaped tension spring on a specially designed busbar with two lateral Aufkantungen, so that the busbar spaced from the plant leg of the tension spring extends. In this tension spring clamp, in addition to the connection of a flexible conductor in the recess in the clamping leg additionally Solid conductor between the plant leg and the busbar are inserted. Since only a relatively small clamping force is applied to the solid conductor, which is plugged into the terminal parallel to the plant limb and to the busbar, the electrical connection is very much dependent on manufacturing tolerances and the diameter of the solid conductor.

Eine Weiterentwicklung der zuletzt beschriebenen Zugfederklemme offenbart die DE 199 03 965 A1 . Bei dieser Zugfederklemme können zwei elektrische Leiter von der selben Seite durch die Öffnung im Klemmschenkel eingesteckt werden, wobei ein Leiter dann unterhalb und ein Leiter oberhalb der Stromschiene angeordnet ist. Der oberhalb der Stromschiene angeordnete Leiter wird dabei durch den speziell ausgebildeten Anlageschenkel der Zugfeder gegen die Stromschiene gedrückt.A further development of the last described tension spring clamp discloses the DE 199 03 965 A1 , In this tension spring clamp two electrical conductors can be inserted from the same side through the opening in the clamping leg, wherein a conductor is then arranged below and a conductor above the busbar. The arranged above the busbar conductor is pressed by the specially trained plant leg of the tension spring against the busbar.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine eingangs beschriebene elektrische Anschluß- oder Verbindungsklemme zur Verfügung zu stellen, welche bei einer möglichst geringen Baugröße eine einfache aber dennoch sichere Fixierung der Klemmfeder auch bei größeren Querschnitten der anzuschließenden Leiter ermöglicht.The present invention has for its object to provide an electrical connection or connection terminal described above, which allows for the smallest possible size a simple yet secure fixation of the clamping spring, even with larger cross sections of the conductors to be connected.

Diese Aufgabe ist bei der eingangs beschriebenen elektrischen Anschluß- oder Verbindungsklemme gemäß einer ersten Alternative durch die Merkmale des Anspruchs 1 gelöst.This object is achieved in the electrical connection or connection terminal described above according to a first alternative by the features of claim 1.

Gemäß einer zweiten Alternative der erfindungsgemäßen elektrischen Anschluß- oder Verbindungsklemme, ist die Aufgabe durch die Merkmale des Anspruchs 4 gelöst.According to a second alternative of the electrical connection or connection terminal according to the invention, the object is solved by the features of claim 4.

Das Metallteil ähnelt somit zunächst dem aus der EP 1 391 965 A1 bekannten Stromschienenstück. Im Unterschied zu diesem bekannten Stromschienenstück ist bei dem Strombalken jedoch kein Materialdurchzug mit einer Lochkrageninnenwand, die sich in Einsteckrichtung des anzuschließenden elektrischen Leiters erstreckt, vorgesehen, sondern ein Befestigungsabschnitt aus dem Strombalken freigestanzt und entgegengesetzt zur Einsteckrichtung des anzuschließenden Leiters abgebogen. Die Klemmfeder wird dabei mit ihrem Anlageschenkel derart auf dem Strombalken aufgesetzt, daß die Ausnehmung im Anlageschenkel und die Ausnehmung im Strombalken zueinander ausgerichtet sind, und der Befestigungsabschnitt des Strombalkens entgegengesetzt zur Einsteckrichtung des anzuschließenden elektrischen Leiters durch die Ausnehmung im Anlageschenkel hindurchragt. Hierdurch ist eine Fixierung der Klemmfeder an dem Strombalken möglich.The metal part is thus similar to that of the first EP 1 391 965 A1 known busbar piece. In contrast to this known busbar piece, however, no material passage with a hole collar inner wall which extends in the insertion direction of the electrical conductor to be connected is provided in the current bar, but a fastening portion is punched out of the current bar and bent opposite to the insertion direction of the conductor to be connected. The clamping spring is placed with her plant leg so on the current bar, that the recess in the plant leg and the recess in the current bar are aligned with each other, and the attachment portion of the current bar opposite protrudes to the insertion of the electrical conductor to be connected through the recess in the plant leg. As a result, a fixation of the clamping spring to the current bar is possible.

Zur besseren Fixierung der Klemmfeder an dem Strombalken ist an dem dem Befestigungsabschnitt gegenüberliegenden Ende der Ausnehmung ein zweiter Befestigungsabschnitt aus dem Strombalken freigestanzt und ebenfalls entgegengesetzt zur Einsteckrichtung des anzuschließenden elektrischen Leiters abgebogen. Zur Montage der Klemmfeder auf dem Strombalken wird somit der Anlageschenkel mit seiner Ausnehmung über die beiden Befestigungsabschnitte des Strombalkens gesteckt und auf den Strombalken aufgesetzt. Der Abstand zwischen den beiden Befestigungsabschnitten ist dabei korrespondierend zur Länge der Ausnehmung im Anlageschenkel gewählt, so daß die Klemmfeder durch die beiden durch die Ausnehmung im Anlageschenkel hindurchgesteckten Befestigungsabschnitte auf dem Strombalken fixiert ist.For better fixation of the clamping spring on the current bar, a second fastening portion is punched out of the current bar at the opposite end of the mounting portion of the recess and also bent opposite to the insertion direction of the electrical conductor to be connected. For mounting the clamping spring on the current bar thus the plant leg is inserted with its recess on the two mounting portions of the current bar and placed on the current bar. The distance between the two mounting portions is chosen to correspond to the length of the recess in the plant leg, so that the clamping spring through the two through the recess in the Investment leg is inserted through fixing sections fixed on the current bar.

Während sich bei der zuletzt beschriebenen Variante, bei der das Metallteil als flacher Strombalken ausgebildet ist, das Metallteil im wesentlichen senkrecht zur Einsteckrichtung des anzuschließenden Leiters erstreckt, verläuft die Haupterstreckungsrichtung der ersten Variante des Metallteils im wesentlichen parallel zur Einsteckrichtung des anzuschließenden Leiters.While in the last-described variant, in which the metal part is designed as a flat current bar, the metal part extends substantially perpendicular to the insertion direction of the conductor to be connected, the main extension direction of the first variant of the metal part is substantially parallel to the insertion direction of the conductor to be connected.

Gemäß einer bevorzugten Ausgestaltung der erfindungsgemäßen elektrischen Anschluß- oder Verbindungsklemme ist an dem dem Ende des Klemmschenkels fernen Ende der Ausnehmung ein Halteabschnitt aus dem Anlageschenkel der Klemmfeder freigestanzt und in Einsteckrichtung des anzuschließenden elektrischen Leiters abgebogen. Der Halteabschnitt, der im wesentlichen senkrecht zum Anlageschenkel abgebogen ist, dient zur besseren Fixierung der Klemmfeder an dem Metallteil. Je nach Ausbildung des Metallteils erstreckt sich der Halteabschnitt entweder durch die Ausnehmung in dem Strombalken oder der Halteabschnitt hintergreift einen Befestigungsabschnitt des Metallteils. Durch die Ausbildung des Halteabschnitts wird insbesondere ein Verdrehen der Klemmfeder beim Einführen eines elektrischen Leiters verhindert.According to a preferred embodiment of the electrical connection or connection terminal according to the invention, a holding portion of the plant leg of the clamping spring is punched free at the end of the clamping leg distal end of the recess and bent in the insertion direction of the electrical conductor to be connected. The holding portion, which is bent substantially perpendicular to the plant leg, serves for better fixation of the clamping spring on the metal part. Depending on the design of the metal part, the holding section either extends through the recess in the current bar or the holding section engages behind a fastening section of the metal part. Due to the design of the holding section in particular a rotation of the clamping spring during insertion of an electrical conductor is prevented.

Gemäß einer weiteren vorteilhaften Ausgestaltung der Erfindung ist der Befestigungsabschnitt des Metallteils derart abgebogen, daß der Befestigungsabschnitt zusammen mit dem Ende des Klemmschenkels der Klemmfeder einen Einführtrichter für den anzuschließenden elektrischen Leiter bilden. Durch die Ausbildung des Einführtrichters wird somit die Spitze eines durch die Leitereinführungsöffnung in das Isoliergehäuse eingeschobenen elektrischen Leiters automatisch richtig positioniert, so daß ein einfaches und exaktes Anschließen eines elektrischen Leiters an die elektrische Anschluß- oder Verbindungsklemme möglich ist.According to a further advantageous embodiment of the invention, the attachment portion of the metal part is bent such that the attachment portion together with the end of the clamping leg of the clamping spring form an insertion funnel for the electrical conductor to be connected. Due to the design of the insertion funnel thus the tip of an inserted through the conductor insertion opening in the insulating electrical conductor is automatically positioned correctly, so that a simple and accurate connection of an electrical conductor to the electrical connection or connection terminal is possible.

Gemäß einer letzten vorteilhaften Ausgestaltung der Erfindung, die hier noch kurz erwähnt werden soll, weist das Isoliergehäuse eine Betätigungsöffnung zum Einführen eines Betätigungswerkzeugs auf und ist an dem Klemmschenkel der Klemmfeder ein Knick ausgebildet, der in Richtung der Federkraft des Klemmschenkels ausgerichtet ist, so daß die Spitze des Betätigungswerkzeugs zum Öffnen der Klemmfeder an dem Knick angreifen kann. Durch das Vorsehen einer Betätigungsöffnung zum Einführen eines Betätigungswerkzeugs wird zunächst erreicht, daß das elektrische Anschluß- oder Verbindungsklemme auch für feindrähtige flexible Leiter verwendet werden kann, bei denen ein Öffnen der Klemmfeder lediglich durch Einstecken des elektrischen Leiters nicht möglich ist. Darüber hinaus kann durch das Öffnen der Klemmfeder mit Hilfe des Betätigungswerkzeugs auch ein bereits geklemmter elektrischer Leiter wieder aus der Klemmstelle gelöst werden.According to a last advantageous embodiment of the invention, which will be briefly mentioned here, the insulating housing has an actuating opening for insertion of an actuating tool and is formed on the clamping leg of the clamping spring a kink, in the direction of the spring force of Clamping leg is aligned so that the tip of the actuating tool to open the clamping spring can act on the kink. By providing an actuating opening for insertion of an actuating tool is first achieved that the electrical connection or connection terminal can also be used for fine-wire flexible conductor, in which an opening of the clamping spring is not possible only by inserting the electrical conductor. In addition, by opening the clamping spring by means of the actuating tool, an already clamped electrical conductor can be released from the nip again.

Der an dem Klemmschenkel ausgebildete Knick ermöglicht dabei ein einfacheres Angreifen der Spitze des Betätigungswerkzeugs am Klemmschenkel zum Öffnen der Klemmfeder. Außerdem kann dadurch die zum vollständigen Öffnen der Klemmfeder erforderliche Einstecktiefe des Betätigungswerkzeugs in die Betätigungsöffnung reduziert werden.The formed on the clamping leg kink allows easier engagement of the tip of the actuating tool on the clamping leg to open the clamping spring. In addition, the insertion depth of the actuating tool required for completely opening the clamping spring can thereby be reduced into the actuating opening.

Im einzelnen gibt es nun eine Vielzahl von Möglichkeiten, die erfindungsgemäße elektrische Anschluß- oder Verbindungsklemme auszugestalten und weiterzubilden. Dazu wird verwiesen einerseits auf die dem Patentanspruch 1 nachgeordneten Patentansprüche, andererseits auf die nachfolgende Beschreibung eines bevorzugten Ausführungsbeispiels in Verbindung mit der Zeichnung. In der Zeichnung zeigen

Fig. 1
eine erfindungsgemäße elektrische Anschluß- oder Verbindungsklemme mit einem anzuschließenden elektrischen Leiter,
Fig. 2
die Klemmfeder und das Metallteil der elektrischen Anschluß-oder Verbindungsklemme gemäß Fig. 1, im noch nicht montierten Zustand,
Fig. 3
die Klemmfeder und eine zweite Ausgestaltung eines Metallteils einer erfindungsgemäßen elektrischen Anschluß- oder Verbindungsklemme, im noch nicht montierten Zustand, und
Fig. 4
eine Variante des Metallteils gemäß Fig. 3.
In particular, there are a variety of ways to design and further develop the electrical connection or connection terminal according to the invention. Reference is made on the one hand to the claims subordinate to claim 1, on the other hand, to the following description of a preferred embodiment in conjunction with the drawings. In the drawing show
Fig. 1
an electrical connection or connection terminal according to the invention with an electrical conductor to be connected,
Fig. 2
the clamping spring and the metal part of the electrical connection or connection terminal according to Fig. 1 , in the unassembled state,
Fig. 3
the clamping spring and a second embodiment of a metal part of an electrical connection or connection terminal according to the invention, in the not yet mounted state, and
Fig. 4
a variant of the metal part according to Fig. 3 ,

Die Fig. 1 bis 3 zeigen eine Klemmfeder 1 und ein Metallteil 2 einer - nur in Fig. 1 insgesamt dargestellten - Anschluß- oder Verbindungsklemme. Zu der Anschluß- oder Verbindungsklemme gehört noch ein eine Leitereinführungsöffnung 3 zum Einführen eines anzuschließenden elektrischen Leiters 4 aufweisendes Isoliergehäuse 5, in dem die Klemmfeder 1 und das Metallteil 2 angeordnet sind. Die Klemmfeder 1 weist einen Klemmschenkel 6, einen Anlageschenkel 7 und einen den Klemmschenkel 6 und den Anlageschenkel 7 verbindenden Rücken 8 auf.The Fig. 1 to 3 show a clamping spring 1 and a metal part 2 a - only in Fig. 1 shown in total - connection or connection terminal. To the connection or connection terminal still includes a conductor insertion opening 3 for insertion of an electrical conductor 4 to be connected insulating housing 5, in which the clamping spring 1 and the metal part 2 are arranged. The clamping spring 1 has a clamping leg 6, an abutment leg 7 and a back 8 connecting the clamping leg 6 and the abutment leg 7.

Wie aus der Fig. 1 ersichtlich ist, ist der Anlageschenkel 7 der Klemmfeder 1 im wesentlichen senkrecht zur Einsteckrichtung des anzuschließenden elektrischen Leiters 4 in dem Isoliergehäuse 5 angeordnet. In dem Anlageschenkel 7 der Klemmfeder 1 ist eine Ausnehmung 9 zum Einstecken des anzuschließenden elektrischen Leiters 4 ausgebildet. Wird der elektrische Leiter 4 durch die Ausnehmung 9 eingesteckt, so wird die Spitze des elektrischen Leiters 4 von dem Ende 10 des Klemmschenkels 6 gegen das Metallteil 2 gedrückt, wodurch die elektrische Kontaktierung des Leiters 4 mit dem Metallteil 2 realisiert wird. Auch wenn der elektrische Leiter 4 noch nicht durch die Ausnehmung 9 in die Klemmfeder 1 eingesteckt ist, erstreckt sich das Ende 10 des Klemmschenkels 6 in die Ausnehmung 9 im Anlageschenkel 7 hinein. Die Klemmfeder 1 weist somit eine etwa schlaufenförmige Kontur auf, wobei der Anlageschenkel 7 und somit auch die Ausnehmung 9 im wesentlichen senkrecht zur Einsteckrichtung des anzuschließenden elektrischen Leiters 4 verläuft.Like from the Fig. 1 it can be seen, the abutment leg 7 of the clamping spring 1 is arranged substantially perpendicular to the insertion direction of the electrical conductor 4 to be connected in the insulating housing 5. In the contact leg 7 of the clamping spring 1, a recess 9 is formed for insertion of the electrical conductor 4 to be connected. If the electrical conductor 4 is inserted through the recess 9, the tip of the electrical conductor 4 is pressed by the end 10 of the clamping leg 6 against the metal part 2, whereby the electrical contacting of the conductor 4 with the metal part 2 is realized. Even if the electrical conductor 4 is not yet inserted through the recess 9 in the clamping spring 1, the end 10 of the clamping leg 6 extends into the recess 9 in the plant leg 7 inside. The clamping spring 1 thus has an approximately loop-shaped contour, wherein the bearing limb 7 and thus also the recess 9 extends substantially perpendicular to the insertion direction of the electrical conductor 4 to be connected.

Zur Montage der Klemmfeder 1 an dem Metallteil 2 weist das Metallteil 2 zumindest einen Befestigungsabschnitt 11 auf, der sich entgegengesetzt zur Einsteckrichtung des anzuschließenden elektrischen Leiters 4 durch die Ausnehmung 9 erstreckt, so daß die Klemmfeder 1 mit ihrer Ausnehmung 9 auf das Metallteil 2 aufsteckbar ist. Die Figuren zeigen nun zwei grundsätzlich unterschiedliche Ausführungsmöglichkeiten des Metallteils 2.For mounting the clamping spring 1 on the metal part 2, the metal part 2 at least one mounting portion 11 which extends opposite to the insertion of the electrical conductor 4 to be connected through the recess 9, so that the clamping spring 1 with its recess 9 can be plugged onto the metal part 2 , The figures now show two fundamentally different embodiments of the metal part. 2

Bei dem in den Figuren 1 und 2 dargestellten Ausführungsbeispiel der erfindungsgemäßen elektrischen Anschluß- oder Verbindungsklemme weist das Metallteil 2 zwei einander gegenüberliegende Schenkel 12, 13 und einen die Schenkel 12, 13 verbindenden Steg 14 auf. Die beiden Schenkel 12, 13 verlaufen im wesentlichen parallel zur Einsteckrichtung des anzuschließenden elektrischen Leiters 4, wobei die Enden der Schenkel 12, 13 jeweils als Befestigungsabschnitte 11, 15 ausgebildet sind, so daß die Klemmfeder 1 mit ihrer Ausnehmung 9 die beiden Befestigungsabschnitte 11, 15 des Metallteils 2 rahmenartig umgreift. Wird der Abstand zwischen den Enden der beiden Befestigungsabschnitte 11, 15 geringfügig größer als die Länge der Ausnehmung 9 im Anlageschenkel 7 gewählt, so ist aufgrund der federnden Eigenschaften der Schenkel 12, 13 zunächst ein gewolltes Aufstecken der Klemmfeder 1 mit der Ausnehmung 9 auf die Befestigungsabschnitte 11, 15 möglich, danach wird die Klemmfeder 1 jedoch aufgrund der federnden Eigenschaft der Schenkel 12, 13 von dem Metallteil 2 sicher gehalten.In the in the FIGS. 1 and 2 illustrated embodiment of the electrical connection or connection terminal according to the invention, the metal part 2, two opposing legs 12, 13 and a leg 12, 13 connecting web 14 on. The two legs 12, 13 extend substantially parallel to the insertion direction of the electrical conductor 4 to be connected, wherein the ends of the legs 12, 13 are each formed as mounting portions 11, 15, so that the clamping spring 1 with its recess 9, the two mounting portions 11, 15 of the metal part 2 engages like a frame. If the distance between the ends of the two fastening sections 11, 15 chosen slightly larger than the length of the recess 9 in the plant leg 7, so is due to the resilient properties of the legs 12, 13 initially a deliberate attachment of the clamping spring 1 with the recess 9 on the mounting portions 11, 15 possible, but then the clamping spring 1 is held securely due to the resilient property of the legs 12, 13 of the metal part 2.

Bei dem in den Fig. 1 und 2 dargestellten Ausführungsbeispiel weist das Metallteil 2 einen Steckerteil 16 auf, der zwei Lötpins 17 umfaßt, so daß die in Fig. 1 dargestellte elektrische Anschlußklemme als Printklemme für gedruckte Schaltungen verwendet werden kann.In the in the Fig. 1 and 2 illustrated embodiment, the metal part 2 has a plug part 16 which comprises two soldering pins 17, so that the in Fig. 1 shown electrical terminal can be used as a printed circuit board for printed circuits.

Eine andere Ausgestaltung des Metallteils 2 ist in den Fig. 3 und 4 dargestellt. Bei diesen Ausführungsbeispielen ist das Metallteil 2 als flacher Strombalken 18 ausgebildet, in dem eine Ausnehmung 19 zum Einstecken des anzuschließenden elektrischen Leiters 4 angeordnet ist. Der Befestigungsabschnitt 11 zur Fixierung der Klemmfeder 1 an dem Metallteil 2 ist aus dem Strombalken 18 freigestanzt und entgegengesetzt zur Einsteckrichtung des anzuschließenden elektrischen Leiters 4 abgebogen. Der Befestigungsabschnitt 11 entspricht dabei einem Teil des Materials des Anlageschenkels 7, das bei der Ausbildung der Ausnehmung 9 aus dem Anlageschenkel 7 freigestanzt wird. Somit können die Ausnehmung 9 und der Befestigungsabschnitt 11 besonders einfach und materialsparend durch einen Stanz- und Biegevorgang hergestellt werden.Another embodiment of the metal part 2 is in the 3 and 4 shown. In these embodiments, the metal part 2 is formed as a flat current bar 18, in which a recess 19 for insertion of the electrical conductor 4 to be connected is arranged. The fixing portion 11 for fixing the clamping spring 1 to the metal part 2 is punched out of the current bar 18 and bent opposite to the insertion direction of the electrical conductor 4 to be connected. The attachment portion 11 corresponds to a portion of the material of the abutment leg 7, which is punched out of the plant leg 7 in the formation of the recess 9. Thus, the recess 9 and the attachment portion 11 can be made particularly simple and save material by a punching and bending process.

Beim Einstecken eines elektrischen Leiters 4 durch die Ausnehmung 9 wird die Spitze des elektrischen Leiters 4 durch das Ende 10 des Klemmschenkels 6 gegen die Innenfläche des Befestigungsabschnitts 11 gedrückt, wodurch der elektrische Kontakt zwischen dem elektrischen Leiter 4 und dem Strombalken 18 hergestellt wird. Durch eine entsprechende Wahl der Länge des Befestigungsabschnitts 11 kann somit auch die Fläche des Bereichs des Strombalkens 18 festgelegt werden, gegen den die Spitze des elektrischen Leiters 4 von dem Klemmschenkel 6 gedrückt wird.When inserting an electrical conductor 4 through the recess 9, the tip of the electrical conductor 4 is pressed by the end 10 of the clamping leg 6 against the inner surface of the mounting portion 11, whereby the electrical contact between the electrical conductor 4 and the current bar 18 is produced. By an appropriate choice of the length of the fastening portion 11 can thus also the surface of the region of the current bar 18 are set, against which the tip of the electrical conductor 4 is pressed by the clamping leg 6.

Bei dem in Fig. 3 dargestellten Strombalken 18 ist zusätzlich zu dem Befestigungsabschnitt 11 am gegenüberliegenden Ende der Ausnehmung 19 ein zweiter Befestigungsabschnitt 15 aus dem Strombalken 18 freigestanzt und abgebogen. Die Ausbildung von zwei Befestigungsabschnitten 11, 15 an dem Strombalken 18 verbessert die Fixierung der Klemmfeder 1 auf dem Strombalken 18. Die beiden Befestigungsabschnitte 11, 15 werden dabei von der Ausnehmung 9 im Anlageschenkel 7 rahmenartig umgriffen.At the in Fig. 3 illustrated current bar 18 is in addition to the attachment portion 11 at the opposite end of the recess 19, a second attachment portion 15 punched out of the current bar 18 and bent. The formation of two fastening portions 11, 15 on the current bar 18 improves the fixation of the clamping spring 1 on the current bar 18. The two mounting portions 11, 15 are thereby surrounded by the recess 9 in the plant leg 7 like a frame.

Insbesondere dann, wenn der Strombalken 18 nur einen Befestigungsabschnitt 11 aufweist (Fig. 4), ist es vorteilhaft, wenn an der Klemmfeder 1 ein zusätzlicher Halteabschnitt 20 aus dem Anlageschenkel 7 ausgebildet ist. Der Halteabschnitt 20 ist dabei an dem dem Ende 10 des Klemmschenkels 6 fernen Ende der Ausnehmung 9 freigestanzt und in Einsteckrichtung des anzuschließenden elektrischen Leiters 4 abgebogen. Bei der Montage der Klemmfeder auf dem Strombalken 18 greift der Halteabschnitt 20 in die Ausnehmung 19 im Strombalken 18 ein. Die Klemmfeder 1 ist dann dadurch an dem Strombalken 18 befestigt, daß der Befestigungsabschnitt 1 des Strombalkens 18 in die Ausnehmung 9 im Anlageschenkel 7 und der Halteabschnitt 20 in die Ausnehmung 19 im Strombalken 18 eingreift.In particular, when the current bar 18 has only one attachment section 11 ( Fig. 4 ), it is advantageous if an additional holding portion 20 is formed from the plant leg 7 on the clamping spring 1. The holding portion 20 is punched free at the end 10 of the clamping leg 6 far end of the recess 9 and bent in the insertion direction of the electrical conductor 4 to be connected. When mounting the clamping spring on the current bar 18, the holding portion 20 engages in the recess 19 in the current bar 18 a. The clamping spring 1 is then attached to the current bar 18, that the attachment portion 1 of the current bar 18 engages in the recess 9 in the plant leg 7 and the holding portion 20 in the recess 19 in the current bar 18.

Auch bei einer Ausbildung des Metallteils 2 gemäß den Fig. 1 und 2 dient der an der Klemmfeder 1 ausgebildete Halteabschnitt 20 zur Verbesserung der Fixierung der Klemmfeder 1 an dem Metallteil 2. Der Halteabschnitt 20 liegt dabei von außen an dem zweiten Befestigungsabschnitt 15 des Metallteils 2 an, so daß ein Verdrehen der Klemmfeder 1 beim Anschließen eines elektrischen Leiters 4 verhindert wird.Even with an embodiment of the metal part 2 according to the Fig. 1 and 2 The retaining portion 20 is located from the outside to the second mounting portion 15 of the metal part 2, so that a twisting of the clamping spring 1 when connecting an electrical conductor 4 is prevented.

Wie aus den Fig. 1 und 2 zu erkennen ist, ist der Befestigungsabschnitt 11 des Metallteils 2 derart abgebogen, daß er zusammen mit dem Ende 10 des Klemmschenkels 6 einen Einführtrichter 21 für den anzuschließenden elektrischen Leiter 4 bildet. Um das Einführen eines elektrischen Leiters 4 in die elektrische Anschluß- oder Verbindungsklemme zu erleichtern, und um einen angeschlossenen elektrischen Leiter 4 bei Bedarf auch aus der Anschluß- oder Verbindungsklemme wieder zu entfernen, weist das Isoliergehäuse 5 eine Betätigungsöffnung 22 zum Einführen eines Betätigungswerkzeugs 23, beispielsweise der Spitze eines Schraubendrehers, auf. Mit dem Betätigungswerkzeug 23 kann dann auf den Klemmschenkel 6 der Klemmfeder 1 gedrückt werden, wodurch sich die Klemmfeder 1 öffnet, so daß ein elektrischer Leiter 4 einfacher eingeschoben oder herausgezogen werden kann. An dem Klemmschenkel 6 ist dabei ein Knick 24 ausgebildet, der in Richtung der Federkraft des Klemmschenkels 6 ausgerichtet ist. An dem Knick 24 kann die Spitze des Betätigungswerkzeugs 23 angreifen, wodurch die maximale nötige Einstecktiefe des Betätigungswerkzeugs 23 in die Betätigungsöffnung 22 zum vollständigen Öffnen der Klemmfeder 1 verringert wird.Like from the Fig. 1 and 2 can be seen, the mounting portion 11 of the metal part 2 is bent so that it forms an insertion funnel 21 for the electrical conductor 4 to be connected together with the end 10 of the clamping leg 6. To facilitate the insertion of an electrical conductor 4 in the electrical connection or connection terminal, and to a connected electrical conductor 4, if necessary, also from the connection or Disconnect terminal again, the insulating housing 5 has an actuating opening 22 for insertion of an actuating tool 23, for example, the tip of a screwdriver on. With the actuating tool 23 can then be pressed onto the clamping leg 6 of the clamping spring 1, whereby the clamping spring 1 opens, so that an electrical conductor 4 can be inserted or pulled out more easily. At the clamping leg 6 while a kink 24 is formed, which is aligned in the direction of the spring force of the clamping leg 6. At the kink 24, the tip of the actuating tool 23 can attack, whereby the maximum necessary insertion depth of the actuating tool 23 is reduced in the actuating opening 22 for fully opening the clamping spring 1.

Insgesamt ist aus den Figuren ersichtlich, daß bei der erfindungsgemäßen elektrischen Anschluß- oder Verbindungsklemme die Fixierung von Klemmfeder 1 und Metallteil 2 besonders einfach herstellbar ist, wobei gleichzeitig auch die Klemmfeder 1 und das Metallteil 2 selber besonders einfach und materialsparend hergestellt werden können. Das Metallteil 2 ist dabei vorzugsweise aus einem Material mit einer guten Leitfähigkeit hergestellt, beispielsweise aus einer Kupferlegierung. Im Unterschied dazu kann die Klemmfeder 1 beispielsweise aus Federstahl hergestellt sein.Overall, it can be seen from the figures that in the electrical connection or connection terminal according to the invention, the fixation of spring clip 1 and metal part 2 is particularly easy to produce, at the same time the clamping spring 1 and the metal part 2 itself can be made very simple and save material. The metal part 2 is preferably made of a material with a good conductivity, for example, a copper alloy. In contrast, the clamping spring 1 can be made for example of spring steel.

Claims (8)

  1. Electrical supply or connecting terminal, with a clamping spring (1) and a metal part (2), the clamping spring (1) and the metal part (2) being arranged in an insulating housing (5) which has a conductor insertion opening (3) for insertion an electrical conductor (4) which is to be connected, the clamping spring (1) having a clamping leg (6) and a contact leg (7), and the clamping leg (6) and the metal part (2) forming a spring force clamping connection for the electrical conductor (4) to be connected,
    wherein the contact leg (7) of the clamping spring (1) is arranged essentially perpendicular to the insertion direction of the electrical conductor (4) to be connected, and a recess (9) is located in the contact leg (7) for insertion of the electrical conductor (4) to be connected, and
    wherein the clamping leg (6) and the contact leg (7) of the clamping spring (1) are bent toward one another in such a way that the end of the clamping leg (6) extends through the recess (9),
    characterized in
    that the metal part (2) has two opposing legs (12, 13) and a bridge (14) which connects the legs (12, 13), the legs (12, 13) running essentially parallel to the insertion direction of the electrical conductor (4) to be connected and the ends of the legs (12, 13) each being made as mounting sections (11, 15), which can be mounted through the recess (9) in a direction opposite the insertion direction of the electrical conductor (4) to be connected so that the clamping spring (1) with its recess (9) can be mounted on the mounting sections (11, 15).
  2. Electrical supply or connecting terminal according to claim 1, characterized in that the two opposing legs (12, 13) are resilient and the distance between the ends of the mounting sections (11, 15) is slightly larger than the length of the recess (9) in the contact leg (7).
  3. Electrical supply or connecting terminal according to claim 1 or 2, characterized in that the metal part (2) is connected to one of a socket or plug part (16).
  4. Electrical supply or connecting terminal, with a clamping spring (1) and a metal part (2), the clamping spring (1) and the metal part (2) being arranged in an insulating housing (5) which has a conductor insertion opening (3) for insertion of an electrical conductor (4) which is to be connected, the clamping spring (1) having a clamping leg (6) and a contact leg (7), and the clamping leg (6) and the metal part (2) forming a spring force clamping connection for the electrical conductor (4) to be connected,
    wherein the contact leg (7) of the clamping spring (1) is arranged essentially perpendicular to the insertion direction of the electrical conductor (4) to be connected, and a recess (9) is located in the contact leg (7) for insertion of the electrical conductor (4) to be connected, and
    wherein the clamping leg (6) and the contact leg(7) of the clamping spring (1) are bent toward one another in such a way that the end of the clamping leg (6) extends through the recess (9),
    wherein the metal part (2) has at least one mounting section (11) which extends through the recess (9) in a direction opposite the insertion direction of the electrical conductor (4) to be connected, so that the clamping spring (1) can be mounted on the metal part (2) with its recess (9),
    characterized in
    that the metal part (2) is a flat current bar (18), in which a recess (9) is located for inserting the electrical conductor (4) to be connected,
    that the mounting section (11) has been stamped out of the current bar (18) and bent down in a direction opposite the insertion direction of the electrical conductor (4) to be connected, and
    that on an end of the recess (19) opposite the mounting section (11), a second mounting section (15) has been stamped out of the current bar (18) and bent down opposite the insertion direction of the electrical conductor (4) to be connected,
  5. Electrical supply or connecting terminal according to any one of claims 1 to 4, characterized in that on an end of the recess (9) away from the end (10) of the clamping leg (6), a retaining section (20) has been stamped out of the contact leg (7) and bent down in the insertion direction of the electrical conductor (4) to be connected.
  6. Electrical supply or connecting terminal, according to any one of claims 1 to 5, characterized in that the mounting section (11) of the metal part (2) is bent down such that the mounting section (11) together with the end (10) of the clamping leg (6) forms an insertion funnel (21) for the electrical conductor (4) to be connected.
  7. Electrical supply or connecting terminal according to any one of claims 1 to 6, characterized in that the insulating housing (5) has an actuating opening (22) for insertion of an actuating tool (23), and that on the clamping leg (6) a kink (24) is formed in the direction of the spring force of the clamping leg (6) so that a tip of an actuating tool (23) can act on the kink (24) for opening the clamping spring (1).
  8. Electrical supply or connecting terminal according to any one of claims 1 to 7, characterized in that the metal part (2) is made of a copper alloy.
EP05018924A 2004-09-23 2005-08-31 Electrical connector or connecting terminal Active EP1641078B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004046471A DE102004046471B3 (en) 2004-09-23 2004-09-23 Electrical connection or connection terminal

Publications (3)

Publication Number Publication Date
EP1641078A2 EP1641078A2 (en) 2006-03-29
EP1641078A3 EP1641078A3 (en) 2007-02-21
EP1641078B1 true EP1641078B1 (en) 2011-07-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP05018924A Active EP1641078B1 (en) 2004-09-23 2005-08-31 Electrical connector or connecting terminal

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US (1) US7238043B2 (en)
EP (1) EP1641078B1 (en)
JP (1) JP4739884B2 (en)
CN (1) CN100511840C (en)
AT (1) ATE515815T1 (en)
CA (1) CA2520478C (en)
DE (1) DE102004046471B3 (en)
DK (1) DK1641078T3 (en)
ES (1) ES2369084T3 (en)

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Also Published As

Publication number Publication date
CA2520478C (en) 2010-12-14
EP1641078A3 (en) 2007-02-21
CN100511840C (en) 2009-07-08
DK1641078T3 (en) 2011-10-03
JP2006093149A (en) 2006-04-06
ES2369084T3 (en) 2011-11-25
CN1753249A (en) 2006-03-29
US20060063420A1 (en) 2006-03-23
EP1641078A2 (en) 2006-03-29
DE102004046471B3 (en) 2006-02-09
ATE515815T1 (en) 2011-07-15
US7238043B2 (en) 2007-07-03
CA2520478A1 (en) 2006-03-23
JP4739884B2 (en) 2011-08-03

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