EP1294054A2 - Pull spring clamp with tap for probe - Google Patents

Pull spring clamp with tap for probe Download PDF

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Publication number
EP1294054A2
EP1294054A2 EP02014287A EP02014287A EP1294054A2 EP 1294054 A2 EP1294054 A2 EP 1294054A2 EP 02014287 A EP02014287 A EP 02014287A EP 02014287 A EP02014287 A EP 02014287A EP 1294054 A2 EP1294054 A2 EP 1294054A2
Authority
EP
European Patent Office
Prior art keywords
tension spring
leg
spring
current bar
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02014287A
Other languages
German (de)
French (fr)
Other versions
EP1294054B1 (en
EP1294054A3 (en
Inventor
Ralf Dipl.-Ing. Geske
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
Original Assignee
Phoenix Contact GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Phoenix Contact GmbH and Co KG filed Critical Phoenix Contact GmbH and Co KG
Publication of EP1294054A2 publication Critical patent/EP1294054A2/en
Publication of EP1294054A3 publication Critical patent/EP1294054A3/en
Application granted granted Critical
Publication of EP1294054B1 publication Critical patent/EP1294054B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/484—Spring housing details
    • H01R4/4842—Spring housing details the spring housing being provided with a single opening for insertion of a spring-activating tool
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/20—Connectors or connections adapted for particular applications for testing or measuring purposes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4811—Spring details
    • H01R4/4816—Spring details the spring shape preventing insertion of the conductor end when the spring is unbiased

Definitions

  • the invention relates to a tension spring clamp a housing in which the tension spring with its Support leg is arranged on a current bar, the through a clamping window in the front section of the Spring leg of the tension spring protrudes.
  • This housing points against that in the clamping position below the Current bar open area of the terminal window in the Spring leg a conductor insertion opening and above in Height of the upper part of the vertex to the support leg bent spring leg an actuation opening for Insert one of the spring legs towards the support leg depressing tool.
  • the housing between the conductor insertion opening and the Actuating opening a test tap opening for Pushing through a contacting the current bar Contact pin of a test plug.
  • the invention is therefore based on the object To create tension spring clamps of the type mentioned at the outset, in which a secure contact of the contact pin of the Test plug with the current bar in the inserted position is also given when the test plug is released becomes.
  • This task is performed with a tension spring clamp Generic type solved according to the invention that the test tap opening for guiding the Contact pin of the test plug, hollow cylindrical is formed, the extension of Cylinder axis along the one away from the current bar Extends inside the support leg of the tension spring, further in that in the end section of the spring leg the tension spring next to the clamp window Push-through opening for the contact pin of the test plug is present and also in that the current bar one that extends into the plug-in path Forming has that introduced to it Contact pin of the test tap opening Test plug is pressed against the long side.
  • the push-through opening in the front section of the Spring leg of the tension spring sufficient play Offer.
  • This push-through opening is therefore expedient as an elongated hole in the direction of the travel of the Formed end portion of the spring leg, and goes this slot in the clamp window of the spring leg about.
  • the tension spring clamp On the Current bar required.
  • the support leg the tension spring expediently a through hole through which the Formation protrudes on the current bar, which on this Through hole is positively adjusted. So the shape on the current bar has a double function, by not just contacting the contact pin of the test plug but also the mechanical fuse the tension spring serves.
  • the invention consists of the shape in the current bar an embossed hump that is compressed and thus in the area of its free end on the inside of the support leg over the edge of its through hole attacks.
  • a groove-shaped contour be embossed, in particular a V-groove, in the Area the contact with the contact pin of the Test plug is made by the contact pin with its Longitude on the flanks of this contour.
  • FIGS. 1 and 2 show a clamping housing 1 which is usually made of plastic and in which a tension spring 2 is arranged.
  • the tension spring 2 has a support leg 3 with which it is placed on a current bar 4 .
  • the one-piece, loop-shaped tension spring 2 also has a spring leg 5 , which has an end section 6 with a clamping window 7 .
  • the end section 6 of the spring leg 5 extends approximately perpendicular to the support leg 3 .
  • the current bar 4 has a front end 20 which projects through the clamping window 7 in the end section 6 of the spring leg 5 .
  • the clamping window 7 is widened because the clamping window 7 is followed by a push-through opening 14 which has the shape of an elongated hole which is open at one end.
  • the width of the push-through opening 14 in the width direction of the end section 6 of the spring leg 5 is smaller than the width of the clamping window 7 in order to keep the material weakening of the tension spring leg 5 low.
  • the housing 1 has a conductor insertion opening 8 which specifies a plug-in direction for the end 18 of a stripped conductor 19 to be passed through, which extends along the side of the current bar 4 which lies away from the support leg 3 of the tension spring 2 lying thereon.
  • a conductor insertion opening 8 specifies a plug-in direction for the end 18 of a stripped conductor 19 to be passed through, which extends along the side of the current bar 4 which lies away from the support leg 3 of the tension spring 2 lying thereon.
  • the clamping window 7 thereby moves in the end section 6 of the spring leg 5 and opens below the front end 20 of the power terminal. 4
  • the spring leg 5 is pressed down by means of a tool which can be inserted into the interior of the housing 1 through an actuation opening 9 .
  • This actuation opening 9 is located on the front side of the housing 1 in accordance with the representations of FIGS. 1 and 2 , while the conductor insertion opening 8 on the front side of the housing 1 is shown lying down. After removing the tool, the spring end 5 clamps the conductor end back against the underside of the current bar 4 for the purpose of contacting.
  • test tap opening 10 On the end face of the terminal housing 1.
  • This test tap opening 10 is hollow-cylindrical molded in the material of the housing 1 and serves to guide a contact pin 11 of a test plug 12 , which is inserted into the interior of the device Tension spring 2 protrudes.
  • the cylinder axis A of the test tap opening 10 and correspondingly that of the contact pin 11 guided therein runs above the inside 13 of the support leg 3 of the tension spring 2 and thus on that side of the support leg 3 which lies away from the current bar. So that when the clamping leg 5 is compressed, the contact pin 11 of the test plug 12 does not collide with the end section 6 thereof, the through-hole 14 mentioned is present, which widens the clamping window 7 in the end section 6 of the spring leg 5 .
  • the contact pin 11 of the test plug 12 passed through the test tap opening 10 passes through the clamping window 7 of the spring leg 5 of the tension spring when a conductor is not being clamped straight on.
  • the through opening 14 on the end section 6 of the spring leg 5 receives the contact pin 11 which projects into the interior of the tension spring.
  • the tension spring 2 is held securely on the current bar 4 .
  • a shape 15 in the form of a hump is present on the current bar 4 , onto which the support leg 3 of the tension spring 2 is attached with a through hole 16 correspondingly adapted to it in a form-fitting manner.
  • the through hole 16 is overlapped on the inner side 13 of the Auflagerschenkels 3 in the edge region, is fixed whereby the tension spring 2 against lifting from the current bar. 4
  • This particular shape 15 of the current bar 4 has the advantage that the contact pin 11 of the test plug 12, which is inserted into the interior of the tension spring 2 and is automatically held in the test tap opening 11 , can contact the current bar.
  • the contact pin 11 runs onto the formation 15 of the current bar 4, there is a slight radial deflection of the correspondingly elastic contact pin 11 , whereby, in view of the exact guidance of the contact pin 11 in the test tap opening 10 in the direction of the axis A, a pressure is exerted on the contact pin 11 ,
  • the test plug 12 can be released at the test tap, which offers handling advantages for clamping and testing work.
  • the secure hold of the contact pin 11 of the test plug 12 is independent of whether or not a conductor is clamped to the current bar 4 by means of the tension spring 2 .

Landscapes

  • Measuring Leads Or Probes (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Testing Of Individual Semiconductor Devices (AREA)
  • Clamps And Clips (AREA)
  • Supports For Pipes And Cables (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

The spring clamp has a main body (1) within which is housed a metal pressing (2) that has a spring arm (5). The arm is moved with the aid of light pressure from a tool . This allows the test probe (12) to be inserted and retained in contact.

Description

Die Erfindung bezieht sich auf eine Zugfederklemme mit einem Gehäuse, in welchem die Zugfeder mit ihrem Auflagerschenkel auf einem Strombalken angeordnet ist, der durch ein Klemmfenster im Stirnabschnitt des Federschenkels der Zugfeder hindurchragt. Dieses Gehäuse weist gegenüber dem in der Klemmlage unterhalb des Strombalkens offenen Bereichs des Klemmfensters im Federschenkel eine Leitereinstecköffnung und darüber in Höhe des oberen Scheitelbereichs des zum Auflagerschenkel hin gebogenen Federschenkels eine Betätigungsöffnung zum Einführen eines den Federschenkel zum Auflageschenkel hin niederdrückenden Werkzeugs auf. Ferner hat das Gehäuse zwischen der Leitereinstecköffnung und der Betätigungsöffnung eine Prüfabgriffsöffnung zum Durchstecken eines den Strombalken kontaktierenden Kontaktstiftes eines Prüfsteckers.The invention relates to a tension spring clamp a housing in which the tension spring with its Support leg is arranged on a current bar, the through a clamping window in the front section of the Spring leg of the tension spring protrudes. This housing points against that in the clamping position below the Current bar open area of the terminal window in the Spring leg a conductor insertion opening and above in Height of the upper part of the vertex to the support leg bent spring leg an actuation opening for Insert one of the spring legs towards the support leg depressing tool. Furthermore, the housing between the conductor insertion opening and the Actuating opening a test tap opening for Pushing through a contacting the current bar Contact pin of a test plug.

Bei bekannten Zugfederklemmen dieser Art befindet sich die Prüfabgriffsöffnung des Klemmengehäuses in Höhe des vorderen Stirnendes des durch das Klemmfenster des Federschenkels der Zugfeder hindurchragenden Strombalkens, wobei die Spitze des Kontaktstiftes des Prüfsteckers lediglich auf einen Punkt des Strombalkens aufgesetzt wird. Man hat es hier mit einem sogenannten "Tippkontakt" zu tun, der eine sichere Kontaktierung nur dann zulässt, wenn die Spitze des Kontaktstiftes des Prüfsteckers unter Druck gegen das Strombalkenende gehalten wird. Dies erfordert beim Prüfabgriff ein ständiges Halten des Prüfsteckers von Hand. Wird der Prüfstecker losgelassen, können sich an der Kontaktstelle höhere Übergangswiderstände ergeben, die zu Fehlmessungen führen.In known tension spring terminals of this type is located the test tap opening of the terminal housing at the level of front end of the through the terminal window of the Spring legs of the tension spring protrude Current bar, the tip of the contact pin of the Test plug only on one point of the current bar is put on. You have it with a so-called "Typing contact" to do that of making safe contact only then allows if the tip of the contact pin of the Test plug under pressure against the current bar end is held. This requires a test tap constant holding of the test plug by hand. Will the Test plug released, can at the contact point higher contact resistances result in incorrect measurements to lead.

Der Erfindung liegt deshalb die Aufgabe zugrunde, eine Zugfederklemme der eingangs genannten Art zu schaffen, bei der eine sichere Kontaktierung des Kontaktstiftes des Prüfsteckers mit dem Strombalken in eingesetzter Position auch dann gegeben ist, wenn der Prüfstecker losgelassen wird.The invention is therefore based on the object To create tension spring clamps of the type mentioned at the outset, in which a secure contact of the contact pin of the Test plug with the current bar in the inserted position is also given when the test plug is released becomes.

Diese Aufgabe wird bei einer Zugfederklemme der gattungsbildenden Art nach der Erfindung dadurch gelöst, dass die Prüfabgriffsöffnung zur Führung des Kontaktstiftes des Prüfsteckers hohlzylindrisch ausgebildet ist, wobei sich die Verlängerung der Zylinderachse entlang der vom Strombalken wegliegenden Innenseite des Auflagerschenkels der Zugfeder erstreckt, weiter dadurch, dass im Stirnabschnitt des Federschenkels der Zugfeder neben dem Klemmfenster eine Durchstecköffnung für den Kontaktstift des Prüfsteckers vorhanden ist und ferner dadurch, dass der Strombalken eine derart bis in den Steckweg hineinreichende Ausformung hat, dass daran der eingeführte, in der Prüfabgriffsöffnung haltende Kontaktstift des Prüfsteckers längsseitig mit Zwang anliegt.This task is performed with a tension spring clamp Generic type solved according to the invention that the test tap opening for guiding the Contact pin of the test plug, hollow cylindrical is formed, the extension of Cylinder axis along the one away from the current bar Extends inside the support leg of the tension spring, further in that in the end section of the spring leg the tension spring next to the clamp window Push-through opening for the contact pin of the test plug is present and also in that the current bar one that extends into the plug-in path Forming has that introduced to it Contact pin of the test tap opening Test plug is pressed against the long side.

Für die Erfindung ist wesentlich, dass beim Einstecken des Kontaktstiftes des Prüfsteckers beim Entlangführen an der Ausformung des Strombalkens eine geringfügige elastische Auslenkung der Kontaktspitze in radialer Richtung erfolgt, womit eine federnde Anlage der Kontaktspitze an der Ausformung des Strombalkens erreicht wird, die für eine sichere Kontaktierung zwischen der Kontaktspitze und dem Strombalken auch dann sorgt, wenn der Prüfstecker losgelassen wird. In der Kontaktlage ragt der Kontaktstift des Prüfsteckers in das Innere der Zugfeder der Zugfederklemme hinein, wofür im Stirnabschnitt des Federschenkels der Zugfeder die Durchstecköffnung zusätzlich vorgesehen werden muss. Dafür wird jedoch der Prüfabgriff weder durch die im Leitereinführbereich der Zugfederklemme befindlichen elektrischen Leiter noch durch ein eventuell in die Betätigungsöffnung des Klemmgehäuses eingeführtes Werkzeug beeinträchtigt. Letztlich ermöglicht gerade die Kontaktierung des Strombalkens mit der Kontaktspitze des Prüfsteckers im Inneren der Zugfeder einen besonders sicheren Prüfabgriff, ohne den Prüfstecker ständig von Hand festhalten zu müssen.It is essential for the invention that when inserting of the contact pin of the test plug when passing along the shape of the current bar a minor elastic deflection of the contact tip in radial Direction takes place, with which a resilient system of Contact tip reached at the shape of the current bar is necessary for a safe contact between the Contact tip and the current bar even if the test plug is released. Raises in the contact position the contact pin of the test plug inside the Tension spring of the tension spring clamp in, for what in End section of the spring leg of the tension spring Push-through opening must also be provided. However, the test tap is neither by the in the Conductor insertion area of the tension spring terminal electrical conductor through a possibly in the Operating opening of the terminal housing inserted Tool affected. Ultimately, it is precisely that Contacting the current bar with the contact tip of the A special test plug inside the tension spring safe test tap, without the test plug constantly To have to hold hands.

Damit unabhängig von der jeweiligen Auslenkung des Federschenkels die Kontaktspitze des Prüfsteckers sicher bis zur Ausformung des Strombalkens durchgesteckt werden kann, muss die Durchstecköffnung im Stirnabschnitt des Federschenkels der Zugfeder ein ausreichendes Spiel bieten. Zweckmäßig ist deshalb diese Durchstecköffnung als Langloch in Richtung des Federweges des Stirnabschnittes des Federschenkels ausgebildet, und geht dieses Langloch in das Klemmfenster des Federschenkels über.So regardless of the respective deflection of the The contact tip of the test plug securely be pushed through until the current bar is formed can, the push-through opening in the front section of the Spring leg of the tension spring sufficient play Offer. This push-through opening is therefore expedient as an elongated hole in the direction of the travel of the Formed end portion of the spring leg, and goes this slot in the clamp window of the spring leg about.

Weiter ist ein Festsitz der Zugfederklemme auf dem Strombalken erforderlich. Dazu hat der Auflageschenkel der Zugfeder zweckmäßig ein Durchgangsloch, durch das die Ausformung am Strombalken hindurchragt, die an dieses Durchgangsöffnungsloch formschlüssig angepasst ist. So hat die Ausformung am Strombalken eine Doppelfunktion, indem sie nicht nur der Kontaktierung des Kontaktstiftes des Prüfsteckers sondern auch der mechanischen Sicherung der Zugfeder dient. In vorteilhafter Ausgestaltung nach der Erfindung besteht die Ausformung im Strombalken aus einem darin eingeprägten Höcker, der gestaucht ist und somit im Bereich seines freien Endes an der Innenseite des Auflageschenkels über den Rand dessen Durchgangslochs greift. Zudem kann vorteilhafterweise durch den Stauchvorgang in die freie Stirnseite der höckerartigen Ausformung des Strombalkens eine nutförmige Kontur eingeprägt sein, insbesondere eine V-Nut, in deren Bereich die Kontaktierung mit dem Kontaktstift des Prüfsteckers erfolgt, indem der Kontaktstift mit seiner Längsseite an den Flanken dieser Kontur anliegt.There is also a tight fit of the tension spring clamp on the Current bar required. To do this, the support leg the tension spring expediently a through hole through which the Formation protrudes on the current bar, which on this Through hole is positively adjusted. So the shape on the current bar has a double function, by not just contacting the contact pin of the test plug but also the mechanical fuse the tension spring serves. According to an advantageous embodiment the invention consists of the shape in the current bar an embossed hump that is compressed and thus in the area of its free end on the inside of the support leg over the edge of its through hole attacks. In addition, can advantageously by Compression process in the free end of the hump-like Forming the current bar a groove-shaped contour be embossed, in particular a V-groove, in the Area the contact with the contact pin of the Test plug is made by the contact pin with its Longitude on the flanks of this contour.

Die Erfindung wird nachfolgend anhand der Zeichnung an einem Ausführungsbeispiel noch näher erläutert. Dabei zeigen:

Fig. 1
eine perspektivische Darstellung einer Zugfederklemme mit aufgeschnittenem Gehäuse,
Fig. 2
eine weitere perspektivische Darstellung der Zugfederklemme mit aufgeschnittenem Gehäuse nach Figur 1, jedoch unter einem anderen Blickwinkel,
Fig. 3
eine perspektivische Darstellung der auf den Strombalken aufgesetzten Zugfeder der Zugfederklemme nach den Figuren 1 und 2 und
Fig. 4
eine perspektivische Darstellung der Zugfeder gemäß Figur 3, jedoch in der Klemmlage bei eingeführtem Prüfstecker.
The invention is explained in more detail below with reference to the drawing using an exemplary embodiment. Show:
Fig. 1
1 shows a perspective illustration of a tension spring clamp with a cut open housing,
Fig. 2
1 shows a further perspective illustration of the tension spring clamp with a cut-open housing according to FIG. 1, but from a different perspective,
Fig. 3
a perspective view of the tension spring mounted on the current bar of the tension spring clamp according to Figures 1 and 2 and
Fig. 4
a perspective view of the tension spring according to Figure 3, but in the clamped position with the test plug inserted.

Im einzelnen zeigen die Figuren 1 und 2 ein üblicherweise aus Kunststoff bestehendes Klemmgehäuse 1, in welchem eine Zugfeder 2 angeordnet ist. Die Zugfeder 2 hat einen Auflagerschenkel 3, mit dem sie auf einen Strombalken 4 aufgesetzt ist. Die einstückige, schlaufenförmig gebogene Zugfeder 2 weist ferner einen Federschenkel 5 auf, der einen Stirnabschnitt 6 mit einem Klemmfenster 7 hat. Im Bereich des Klemmfensters 7 erstreckt sich der Stirnabschnitt 6 des Federschenkels 5 etwa senkrecht zum Auflagerschenkel 3. Der Strombalken 4 hat ein Vorderende 20, das durch das Klemmfenster 7 im Stirnabschnitt 6 des Federschenkels 5 hindurchragt. An der vom Ende des Stirnabschnittes 6 des Federschenkels 5 abliegenden Seite ist das Klemmfenster 7 erweitert, denn an das Klemmfenster 7 schließt sich eine Durchstecköffnung 14 an, welche die Gestalt eines einendig offenen Langlochs hat. Die Weite der Durchstecköffnung 14 in Breitenrichtung des Stirnabschnittes 6 des Federschenkels 5 gesehen ist geringer als die Weite des Klemmfensters 7, um die Materialschwächung des Zugfederschenkels 5 gering zu halten.In detail, FIGS. 1 and 2 show a clamping housing 1 which is usually made of plastic and in which a tension spring 2 is arranged. The tension spring 2 has a support leg 3 with which it is placed on a current bar 4 . The one-piece, loop-shaped tension spring 2 also has a spring leg 5 , which has an end section 6 with a clamping window 7 . In the area of the clamping window 7 , the end section 6 of the spring leg 5 extends approximately perpendicular to the support leg 3 . The current bar 4 has a front end 20 which projects through the clamping window 7 in the end section 6 of the spring leg 5 . On the side remote from the end of the end section 6 of the spring leg 5 , the clamping window 7 is widened because the clamping window 7 is followed by a push-through opening 14 which has the shape of an elongated hole which is open at one end. The width of the push-through opening 14 in the width direction of the end section 6 of the spring leg 5 is smaller than the width of the clamping window 7 in order to keep the material weakening of the tension spring leg 5 low.

Das Gehäuse 1 weist eine Leitereinstecköffnung 8 auf, welche eine Steckrichtung für das hindurchzuführende Ende 18 eines abisolierten Leiters 19 vorgibt, die sich entlang derjenigen Seite des Strombalkens 4 erstreckt, die von dem aufliegendem Auflagerschenkel 3 der Zugfeder 2 abliegt. Um das Leiterende 18 kollisionsfrei mit der Zugfeder 2 einführen zu können, ist deren Federschenkel 5 von seinem Scheitelbereich aus in Richtung des Auflagerschenkels 3 niederdrückbar, wodurch sich das Klemmfenster 7 im Stirnabschnitt 6 des Federschenkels 5 verschiebt und unterhalb des Vorderendes 20 des Strombalkens 4 öffnet. Das Niederdrücken des Federschenkels 5 erfolgt mittels eines Werkzeugs, welches durch eine Betätigungsöffnung 9 in das Innere des Gehäuses 1 einführbar ist. Diese Betätigungsöffnung 9 befindet sich an der Stirnseite des Gehäuses 1 entsprechend den Darstellungen von Figur 1 und 2 nach oben hin liegend, während die Leitereinstecköffnung 8 an der Stirnseite des Gehäuses 1 nach unten hin liegend dargestellt ist. Nach Entfernen des Werkzeugs wird durch Rückfedern des Federschenkels 5 das Leiterende gegen die Unterseite des Strombalkens 4 zwecks Kontaktierung verspannt.The housing 1 has a conductor insertion opening 8 which specifies a plug-in direction for the end 18 of a stripped conductor 19 to be passed through, which extends along the side of the current bar 4 which lies away from the support leg 3 of the tension spring 2 lying thereon. To the conductor end 18 introduce collision with the spring 2, the spring leg 5 from its apex region of depressible in the direction of Auflagerschenkels 3, the clamping window 7 thereby moves in the end section 6 of the spring leg 5 and opens below the front end 20 of the power terminal. 4 The spring leg 5 is pressed down by means of a tool which can be inserted into the interior of the housing 1 through an actuation opening 9 . This actuation opening 9 is located on the front side of the housing 1 in accordance with the representations of FIGS. 1 and 2 , while the conductor insertion opening 8 on the front side of the housing 1 is shown lying down. After removing the tool, the spring end 5 clamps the conductor end back against the underside of the current bar 4 for the purpose of contacting.

Zwischen der Leitereinführungsöffnung 8 und der Betätigungsöffnung 9 befindet sich an der Stirnseite des Klemmengehäuses 1 eine Prüfabgriffsöffnung 10. Diese Prüfabgriffsöffnung 10 ist im Material des Gehäuses 1 hohlzylindrisch eingeformt und dient zur Führung eines Kontaktstiftes 11 eines Prüfsteckers 12, der in eingesteckter Anordnung in das Innere der Zugfeder 2 hineinragt. Die Zylinderachse A der Prüfabgriffsöffnung 10 und entsprechend die des darin geführten Kontaktstiftes 11 verläuft oberhalb der Innenseite 13 des Auflagerschenkels 3 der Zugfeder 2 und somit auf derjenigen Seite des Auflagerschenkels 3, die von dem Strombalken wegliegt. Damit bei eingefedertem Klemmschenkel 5 der Kontaktstift 11 des Prüfsteckers 12 nicht mit dessen Stirnabschnitt 6 kollidiert, ist die erwähnte Durchstecköffnung 14 vorhanden, die das Klemmfenster 7 im Stirnabschnitt 6 des Federschenkels 5 erweitert.Between the conductor insertion opening 8 and the actuation opening 9 there is a test tap opening 10 on the end face of the terminal housing 1. This test tap opening 10 is hollow-cylindrical molded in the material of the housing 1 and serves to guide a contact pin 11 of a test plug 12 , which is inserted into the interior of the device Tension spring 2 protrudes. The cylinder axis A of the test tap opening 10 and correspondingly that of the contact pin 11 guided therein runs above the inside 13 of the support leg 3 of the tension spring 2 and thus on that side of the support leg 3 which lies away from the current bar. So that when the clamping leg 5 is compressed, the contact pin 11 of the test plug 12 does not collide with the end section 6 thereof, the through-hole 14 mentioned is present, which widens the clamping window 7 in the end section 6 of the spring leg 5 .

Wie aus den Figuren 1 und 3 hervorgeht, tritt der durch die Prüfabgriffsöffnung 10 hindurchgeführte Kontaktstift 11 des Prüfsteckers 12 durch das Klemmfenster 7 des Federschenkels 5 der Zugfeder dann hindurch, wenn ein Leiter nicht gerade angeklemmt wird. Bei geklemmten Leiter, was die Figuren 2 und 4 veranschaulichen, nimmt die Durchstecköffnung 14 am Stirnabschnitt 6 des Federschenkels 5 den in das Innere der Zugfeder hineinragenden Kontaktstift 11 auf.As can be seen from FIGS. 1 and 3 , the contact pin 11 of the test plug 12 passed through the test tap opening 10 passes through the clamping window 7 of the spring leg 5 of the tension spring when a conductor is not being clamped straight on. When the conductor is clamped, as shown in FIGS. 2 and 4 , the through opening 14 on the end section 6 of the spring leg 5 receives the contact pin 11 which projects into the interior of the tension spring.

Wie den Figuren 3 und 4 weiter zu entnehmen ist, wird die Zugfeder 2 auf dem Strombalken 4 sicher gehalten. Dazu ist am Strombalken 4 eine Ausformung 15 in Gestalt eines Höckers vorhanden, auf den der Auflagerschenkel 3 der Zugfeder 2 mit einem entsprechend formschlüssig daran angepassten Durchgangsloch 16 aufgesteckt ist. Durch eine Stauchung oder Verkröpfung der höckerförmigen Ausformung 15 am Strombalken 4 ist das Durchgangsloch 16 an der Innenseite 13 des Auflagerschenkels 3 im Randbereich übergriffen, wodurch die Zugfeder 2 gegen ein Abheben vom Strombalken 4 fixiert ist.As can further be seen from FIGS. 3 and 4 , the tension spring 2 is held securely on the current bar 4 . For this purpose, a shape 15 in the form of a hump is present on the current bar 4 , onto which the support leg 3 of the tension spring 2 is attached with a through hole 16 correspondingly adapted to it in a form-fitting manner. By compression or cranked portion of the hump-shaped portion 15 at the current bar 4, the through hole 16 is overlapped on the inner side 13 of the Auflagerschenkels 3 in the edge region, is fixed whereby the tension spring 2 against lifting from the current bar. 4

Mit dieser besonderen Ausformung 15 des Strombalkens 4 ist der Vorteil verbunden, dass der bis in das Innere der Zugfeder 2 hinein eingesteckte Kontaktstift 11 des Prüfsteckers 12, der in der Prüfabgriffsöffnung 11 selbsttätig gehalten ist, den Strombalken kontaktieren kann. Beim Auflaufen des Kontaktstiftes 11 auf die Ausformung 15 des Strombalkens 4 findet eine geringe radiale Auslenkung des entsprechend elastischen Kontaktstiftes 11 statt, wodurch in Anbetracht der exakten Führung des Kontaktstiftes 11 in der Prüfabgriffsöffnung 10 in Richtung der Achse A ein Zwang auf den Kontaktstift 11 ausgeübt wird. Somit besteht im Hinblick auf eine gute Kontaktierung ein Kontaktdruck zwischen dem ausgelenkten Kontaktstift 11 und der Ausformung 15 des Strombalkens 4. Deshalb kann beim Prüfabgriff der Prüfstecker 12 losgelassen werden, was bei Klemm- und Prüfarbeiten Handhabungsvorteile bietet. Zudem ist der sichere Halt des Kontaktstiftes 11 des Prüfsteckers 12 unabhängig davon, ob mittels der Zugfeder 2 am Strombalken 4 ein Leiter angeklemmt ist oder nicht.This particular shape 15 of the current bar 4 has the advantage that the contact pin 11 of the test plug 12, which is inserted into the interior of the tension spring 2 and is automatically held in the test tap opening 11 , can contact the current bar. When the contact pin 11 runs onto the formation 15 of the current bar 4, there is a slight radial deflection of the correspondingly elastic contact pin 11 , whereby, in view of the exact guidance of the contact pin 11 in the test tap opening 10 in the direction of the axis A, a pressure is exerted on the contact pin 11 , Thus, with regard to good contacting, there is contact pressure between the deflected contact pin 11 and the shape 15 of the current bar 4 . Therefore, the test plug 12 can be released at the test tap, which offers handling advantages for clamping and testing work. In addition, the secure hold of the contact pin 11 of the test plug 12 is independent of whether or not a conductor is clamped to the current bar 4 by means of the tension spring 2 .

Claims (6)

Zugfederklemme mit einem Gehäuse (1 ), in welchem die Zugfeder (2 ) mit ihrem Auflagerschenkel (3 ) auf einem Strombalken (4 ) angeordnet ist, der durch ein Klemmfenster (7 ) im Stirnabschnitt (6 ) des Federschenkels (5 ) der Zugfeder (2 ) hindurchragt, und welches gegenüber dem in der Klemmlage unterhalb des Strombalkens (4 ) offenen Bereichs des Klemmfensters (7 ) im Federschenkel (5 ) eine Leitereinstecköffnung (8 ) und darüber in Höhe des oberen Scheitelbereichs des zum Auflagerschenkel hin gebogenen Federschenkels (5 ) eine Betätigungsöffnung (9 ) zum Einführen eines den Federschenkel (5 ) zum Auflagerschenkel (3 ) hin niederdrückenden Werkzeugs aufweist, wobei das Gehäuse (1 ) ferner zwischen der Leitereinstecköffnung (8 ) und der Betätigungsöffnung (9 ) eine Prüfabgriffsöffnung (10 ) zum Durchstecken eines den Strombalken (4 ) kontaktierenden Kontaktstiftes (11 ) eines Prüfsteckers (12 ) hat,
dadurch gekennzeichnet , dass die Prüfabgriffsöffnung (10 ) zur Führung des Kontaktstiftes (11 ) des Prüfsteckers (12 ) hohlzylindrisch ausgebildet ist, wobei sich die Verlängerung der Zylinderachse (A) entlang der vom Strombalken (3 ) wegliegenden Innenseite (13 ) des Auflagerschenkels (3 ) der Zugfeder (2 ) erstreckt, dass im Stirnabschnitt (6 ) des Federschenkels (5 ) der Zugfeder (2 ) neben dem Klemmfenster (7 ) eine Durchstecköffnung (14 ) für den Kontaktstift (11 ) des Prüfsteckers (12 ) vorhanden ist und dass der Strombalken (4 ) eine derart bis in den Steckweg des Kontaktstiftes (11 ) hineinreichende Ausformung (15 ) hat, dass daran der eingeführte, in der Prüfabgriffsöffnung (10 ) gehaltene Kontaktstift (11 ) des Prüfsteckers (12 ) längsseitig mit Zwang anliegt.Tension spring clamp with a housing (1), in which the tension spring (2) with its support leg (3) is arranged on a current bar (4), which is connected through a clamping window (7) in the end section (6) of the spring leg (5) of the tension spring ( 2) protrudes, and which, compared to the area of the clamping window (7) in the spring leg (5) which is open in the clamping position below the current bar (4), has a conductor insertion opening (8) and above it at the height of the upper apex area of the spring leg (5) bent towards the bearing leg. has an actuating opening (9) for introducing a tool which presses the spring leg (5) towards the support leg (3), the housing (1) also having a test tap opening (10) between the conductor insertion opening (8) and the actuating opening (9) for inserting a the contact bar (11) of a test plug (12) contacting the current bar (4),
characterized in that the test tap opening (10) for guiding the contact pin (11) of the test plug (12) is of hollow cylindrical design, the extension of the cylinder axis (A) extending along the inside (13) of the support leg (3) away from the current bar (3) ) of the tension spring (2) extends that in the end section (6) of the spring leg (5) of the tension spring (2) next to the clamping window (7) there is a push-through opening (14) for the contact pin (11) of the test plug (12) and that the current bar (4) has a shape (15) extending into the plug-in path of the contact pin (11) in such a way that the contact pin (11) of the test plug (12) inserted in the test tap opening (10) is pressed against it along the length. Zugfederklemme nach Anspruch 1,
dadurch gekennzeichnet, dass die Durchstecköffnung (14 ) im Stirnabschnitt (6 ) des Federschenkels (5 ) der Zugfeder (2 ) ein sich ein in Richtung des Federweges dieses Stirnabschnittes (6 ) erstreckendes Langloch ist.Tension spring clamp according to claim 1,
characterized in that the push-through opening (14) in the end section (6) of the spring leg (5) of the tension spring (2) is an elongated hole extending in the direction of the spring travel of this end section (6). Zugfederklemme nach Anspruch 2,
dadurch gekennzeichnet, dass die Durchstecköffnung (14 ) an ihrem einen Ende in das Klemmfenster (7 ) des Federschenkels (5 ) der Zugfeder (2 ) übergeht.Tension spring clamp according to claim 2,
characterized in that the push-through opening (14) merges at one end into the clamping window (7) of the spring leg (5) of the tension spring (2). Zugfederklemme nach einem der Ansprüche 1-3,
dadurch gekennzeichnet, dass der Auflagerschenkel (3 ) der Zugfeder (2 ) ein Durchgangsloch (16 ) hat, durch das die Ausformung (15 ) am Strombalken (4 ) hindurchragt, die an dieses Durchgangsloch (16 ) formschlüssig angepasst ist. Tension spring clamp according to one of claims 1-3,
characterized in that the support leg (3) of the tension spring (2) has a through hole (16) through which the formation (15) on the current bar (4) projects, which is adapted to this through hole (16) in a form-fitting manner. Zugfederklemme nach Anspruch 4,
dadurch gekennzeichnet, dass die Ausformung (15 ) ein in den Strombalken (4 ) eingeprägter Höcker ist, der an der Innenseite (13 ) des Auflagerschenkels (3 ) der Zugfeder (2 ) eine über den Rand dessen Durchgangslochs (16 ) hinausreichende Stauchung hat.Tension spring clamp according to claim 4,
characterized in that the shape (15) is a bump impressed into the current bar (4), which has a compression on the inside (13) of the support leg (3) of the tension spring (2) that extends beyond the edge of its through hole (16). Zugfederklemme nach Anspruch 4 oder 5,
dadurch gekennzeichnet, dass die Ausformung (15 ) des Strombalkens (4 ) an ihrer freien Stirnseite eine diametrale, nutförmige Kontur (17 ) zur Kontaktierung mit dem Kontaktstift (11 ) des Prüfsteckers (12 ) hat.Tension spring clamp according to claim 4 or 5,
characterized in that the shape (15) of the current bar (4) has on its free end face a diametrical, groove-shaped contour (17) for contacting the contact pin (11) of the test plug (12).
EP02014287A 2001-09-13 2002-06-27 Pull spring clamp with tap for probe Expired - Lifetime EP1294054B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20115100U DE20115100U1 (en) 2001-09-13 2001-09-13 Tension spring clamp with test tap
DE20115100U 2001-09-13

Publications (3)

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EP1294054A2 true EP1294054A2 (en) 2003-03-19
EP1294054A3 EP1294054A3 (en) 2003-08-13
EP1294054B1 EP1294054B1 (en) 2007-10-03

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ID=7961652

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Application Number Title Priority Date Filing Date
EP02014287A Expired - Lifetime EP1294054B1 (en) 2001-09-13 2002-06-27 Pull spring clamp with tap for probe

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US (1) US6750402B2 (en)
EP (1) EP1294054B1 (en)
CN (1) CN1208877C (en)
AT (1) ATE375019T1 (en)
DE (2) DE20115100U1 (en)

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Also Published As

Publication number Publication date
US6750402B2 (en) 2004-06-15
DE20115100U1 (en) 2001-11-29
ATE375019T1 (en) 2007-10-15
CN1208877C (en) 2005-06-29
DE50211002D1 (en) 2007-11-15
EP1294054B1 (en) 2007-10-03
CN1405926A (en) 2003-03-26
EP1294054A3 (en) 2003-08-13
US20030047346A1 (en) 2003-03-13

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