EP1045474A2 - Spring clamp - Google Patents

Spring clamp Download PDF

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Publication number
EP1045474A2
EP1045474A2 EP00103009A EP00103009A EP1045474A2 EP 1045474 A2 EP1045474 A2 EP 1045474A2 EP 00103009 A EP00103009 A EP 00103009A EP 00103009 A EP00103009 A EP 00103009A EP 1045474 A2 EP1045474 A2 EP 1045474A2
Authority
EP
European Patent Office
Prior art keywords
busbar
clamping
tension spring
conductor
passage 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.)
Withdrawn
Application number
EP00103009A
Other languages
German (de)
French (fr)
Other versions
EP1045474A3 (en
Inventor
Thomas Wielsch
Jochen Reese
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weidmueller Interface GmbH and Co KG
Original Assignee
Weidmueller Interface GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Weidmueller Interface GmbH and Co KG filed Critical Weidmueller Interface GmbH and Co KG
Publication of EP1045474A2 publication Critical patent/EP1045474A2/en
Publication of EP1045474A3 publication Critical patent/EP1045474A3/en
Withdrawn legal-status Critical Current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
    • H01R4/48455—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar insertion of a wire only possible by pressing on the spring

Definitions

  • the invention relates to a tension spring terminal for electrical conductors, with a busbar and a tension spring, which has a leg resting on the conductor rail, has a curved back area and a clamping leg in which a Passage opening for the busbar is located, the lower limit of the Passage an inserted electrical conductor at the bottom of the The busbar is stuck.
  • tension spring clamps are in their basic construction known (DE 296 08 178 U1, DE 42 377 33 C1).
  • the passage opening in the clamping leg is through which the busbar is inserted and through which the electrical Head is inserted, window-shaped, the lower straight Boundary edge of the window the clamping edge for clamping the inserted Conductor forms at the bottom of the busbar.
  • the conductor can only be used with such a spring clamp electrical conductor can be connected.
  • the present invention is based on the object, the possible uses such tension spring terminals to enlarge significantly.
  • the solution according to the invention is that the lower limit of the passage opening through to free end of the clamping leg converging bevels towards the center of the conductor is trained.
  • Corresponding recesses are provided, in which the bevels at Ladder clamping can occur.
  • the essentially loop-shaped tension spring 1 of the tension spring clamp has one leg lying on the cooperating busbar 2 3, a back area 4 and an adjoining clamping leg 5.
  • the clamping leg 5 there is a passage opening 6 through which the busbar 2 occurs when the tension spring is placed on the busbar becomes.
  • Figure a illustrates that this centering a particularly secure clamping for a single conductor 10 to be connected and thus contacting, because in relation to the clamping leg 5 result in several clamping points, indicated by arrows in Figure a are.
  • Figure b of Figure 3 illustrates the reliable clamping and thus contacting two conductors of the same diameter, their position to each other, to Clamp legs and to the busbar in the clamping phase thanks to the centering and compaction results automatically.
  • Figure c of the clamping scheme according to Figure 3 illustrates the also guaranteed reliable clamping thanks to the centering and compacting in the Taper zone also for two conductors of different diameters.
  • the illustration d of the clamping scheme according to FIG. 3 illustrates that under extensive conditions Entry of the bevels 7 of the passage opening 6 of the clamping leg 5 into the Recesses 8 also a very small conductor in the bottom area of the taper zone can be reliably clamped and contacted.
  • the rejuvenation zone can also be reliable and easy too Multi-wire conductors, especially fine-wire conductors, reliably connected become.
  • the underside of the busbar 2 is possible Conductor connection area provided with a corrugation 11, which is particularly good Down the ladder.
  • the center can a bulge 12 may be provided on the underside of the busbar 2 in which in some applications is a conductor with part of its outer sheath can insert, which can also contribute to secure fixing.
  • it may be appropriate to the bottom of the busbar insofar as to be left in the possible clamping zone as a whole, as in FIG 4 shown.

Abstract

The electrical terminal clamp has a formed spring clip metal pressing (1) that has an aperture (6) into which is located a clamping conductor bar (2). This has serrated teeth (8). When an end of a wire is inserted (1), the spring clip presses a bar against the wire.

Description

Die Erfindung betrifft eine Zugfederklemme für elektrische Leiter, mit einer Stromschiene und einer Zugfeder, die einen auf der Stromschiene aufliegenden Schenkel, einen gebogenen Rückenbereich und einen Klemmschenkel hat, in dem sich eine Durchtrittsöffnung für die Stromschiene befindet, wobei die untere Begrenzung der Durchtrittsöffnung einen eingeführten elektrischen Leiter an der Unterseite der Stromschiene festklemmt.The invention relates to a tension spring terminal for electrical conductors, with a busbar and a tension spring, which has a leg resting on the conductor rail, has a curved back area and a clamping leg in which a Passage opening for the busbar is located, the lower limit of the Passage an inserted electrical conductor at the bottom of the The busbar is stuck.

Derartige Zugfederklemmen sind in ihrem grundsätzlichen konstruktiven Aufbau bekannt (DE 296 08 178 U1, DE 42 377 33 C1).Such tension spring clamps are in their basic construction known (DE 296 08 178 U1, DE 42 377 33 C1).

Bei den bekannten Zugfederklemmen ist die Durchtrittsöffnung im Klemmschenkel, durch die die Stromschiene hindurchgesteckt wird und durch die auch der elektrische Leiter eingeführt wird, fensterförmig ausgebildet, wobei die untere gerade Begrenzungskante des Fensters die Klemmkante zum Festklemmen des eingeführten Leiters an der Unterseite der Stromschiene bildet. Im Sinne einer sicheren Kontaktierung des Leiters kann mit einer derartigen Zugfederklemme nur jeweils ein elektrischer Leiter angeschlossen werden. In the known tension spring clamps, the passage opening in the clamping leg is through which the busbar is inserted and through which the electrical Head is inserted, window-shaped, the lower straight Boundary edge of the window the clamping edge for clamping the inserted Conductor forms at the bottom of the busbar. In the sense of a safe contact the conductor can only be used with such a spring clamp electrical conductor can be connected.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, die Einsatzmöglichkeiten derartiger Zugfederklemmen erheblich zu vergrößern. Die erfindungsgemäße Lösung besteht darin, daß die untere Begrenzung der Durchtrittsöffnung durch zum freien Ende des Klemmschenkels hin konvergierende Schrägen leiterzentrierend ausgebildet ist.The present invention is based on the object, the possible uses such tension spring terminals to enlarge significantly. The solution according to the invention is that the lower limit of the passage opening through to free end of the clamping leg converging bevels towards the center of the conductor is trained.

Dank dieser Ausgestaltung kann nicht nur ein einzelner Leiter besonders sicher, da zentriert, an der Stromschiene festgeklemmt werden, es können nunmehr insbesondere auch mehrere Leiter, dabei auch Leiter unterschiedlichen Durchmessers, zuverlässig kontaktiert werden, da sie in der Klemmphase automatisch in der Zentrierzone so zentriert und kompaktiert werden, daß alle Leiter zuverlässig kontaktierend festgeklemmt werden, was auch für einen Leiter gilt, der bei dieser Zentrierung und Kompaktierung selbst nicht in Kontakt zur Stromschiene gelangt, sondern der kontaktierend mit benachbarten Leitern verklemmt wird. Diese Ausgestaltung der Zugfederklemme ermöglicht also auch das gleichzeitige Anschließen mehrerer Leiter, auch mehrerer Leiter unterschiedlichen Durchmessers, so wie das Anschließen mehrdrähtiger, auch feindrähtiger Leiter.Thanks to this configuration, not only a single conductor can be particularly safe since centered, clamped on the busbar, it can now in particular also several conductors, including conductors of different diameters, reliably be contacted as they are automatically in the centering zone in the clamping phase be centered and compacted so that all conductors make reliable contact be clamped, which also applies to a conductor who is in this centering and Compacting itself does not come into contact with the conductor rail, but the contacting one is jammed with adjacent conductors. This configuration of the tension spring clamp also enables the simultaneous connection of several conductors, also several conductors of different diameters, such as the connection stranded, also fine-stranded conductor.

Gemäß einer besonders bevorzugten weiteren Ausgestaltung der Erfindung sind in der Stromschiene beidseitig zu den Schrägen der Durchtrittsöffnung der Klemmschenkel korrespondierende Ausnehmungen vorgesehen, in die die Schrägen bei der Leiterklemmung eintreten können. Hierdurch kann die Verjüngungsspitze, die die Schrägen bilden, bei der Klemmung eines Leiters sehr nah an die Unterseite der Stromschiene gebracht werden, so daß bei dieser Ausgestaltung auch besonders kleine Leiter in dieser Verjüngungsspitze sicher festgeklemmt und damit kontaktiert werden können.According to a particularly preferred further embodiment of the invention, in the busbar on both sides to the slopes of the passage opening of the clamping leg Corresponding recesses are provided, in which the bevels at Ladder clamping can occur. This allows the tapered tip that the Form slants when clamping a conductor very close to the bottom of the Busbar are brought, so that in this embodiment also particularly small conductors securely clamped in this taper tip and contacted can be.

Ein Ausführungsbeispiel einer derartigen Zugfederklemme wird nachstehend unter anhand der Zeichnungen näher beschrieben. An embodiment of such a tension spring clamp is described below described in more detail with reference to the drawings.

Es zeigen:

Figur 1
eine Zugfederklemme vor Einführung des elektrischen Leiters, noch in geschlossenem Zustand, in Perspektive,
Figur 2
die Zugfederklemme nach Figur 1 nunmehr in geöffnetem, zur Aufnahme des Leiters bereiten Zustand,
Figur 3
ein Klemmschema für unterschiedliche Leiterklemmungen,
Figur 4
eine Einzelansicht einer weiteren Ausführungsform der Stromschiene.
Show it:
Figure 1
a tension spring clamp before insertion of the electrical conductor, still in the closed state, in perspective,
Figure 2
1 now in the open state, ready for receiving the conductor,
Figure 3
a clamping scheme for different conductor clamps,
Figure 4
a single view of another embodiment of the busbar.

Die im wesentlichen schlaufenförmig gebogene Zugfeder 1 der Zugfederklemme hat einen auf der mit ihr zusammenwirkenden Stromschiene 2 aufliegenden Schenkel 3, einen Rückenbereich 4 und einen sich daran anschließenden Klemmschenkel 5. In dem Klemmschenkel 5 befindet sich eine Durchtrittsöffnung 6, durch die hindurch die Stromschiene 2 tritt, wenn die Zugfeder auf die Stromschiene aufgesetzt wird.The essentially loop-shaped tension spring 1 of the tension spring clamp has one leg lying on the cooperating busbar 2 3, a back area 4 and an adjoining clamping leg 5. In the clamping leg 5 there is a passage opening 6 through which the busbar 2 occurs when the tension spring is placed on the busbar becomes.

Bei dieser Zugfederklemme ist nun die untere Begrenzung der Durchtrittsöffnung 6 im Klemmschenkel 5 der Zugfeder 1 durch zwei zum freien Ende des Klemmschenkels 5 hin konvergierende Schrägen 7 definiert. In der Stromschiene 1 sind beidseitig zu diesen Schrägen 7 korrespondierende Ausnehmungen 8 vorgesehen. wobei insbesondere der Boden 9 dieser Ausnehmungen einen den Schrägen 7 entsprechenden Schrägverlauf hat, so daß in der Schließ- bzw. Klemmphase die Schrägen 7 gegebenenfalls weit in die Ausnehmungen 8 eintreten können. In der Schließlage der Zugfederklemme, auch ohne Leiterbestückung, zieht die Federkraft der Zugfeder 1 den Klemmschenkel 5 unter die Stromschiene 2, wobei die Schrägen 7 bis an den Boden 9 der Ausnehmungen 8 herantreten können (Figur 1). The lower limit of the passage opening 6 is now in this tension spring clamp in the clamping leg 5 of the tension spring 1 by two to the free end of the clamping leg 5 converging bevels 7 defined. In the busbar 1 are Recesses 8 corresponding to these bevels 7 are provided on both sides. in particular the bottom 9 of these recesses corresponding to the bevels 7 Inclined course, so that the slopes in the closing or clamping phase 7 can possibly enter far into the recesses 8. In the The closed position of the tension spring clamp, even without conductor assembly, pulls the spring force the tension spring 1 the clamping leg 5 under the busbar 2, the bevels 7 can approach the bottom 9 of the recesses 8 (Figure 1).

Soll nun ein elektrischer Leiter 10 angeschlossen werden, wird die Zugfeder 1 gegen ihre Federkraft in die Offenstellung gedrückt, so daß die Durchtrittsöffnung 6 des Klemmschenkels 5 auf der Unterseite der Stromschiene 2 so weit freigegeben wird, daß der Leiter 10 eingesteckt werden kann (Figur 2). Mit der Freigabe der Zugfeder 1 wird durch deren Federkraft der elektrische Leiter 10 gegen die Unterseite der Stromschiene 2 geklemmt und dort kontaktiert. Dank der Schrägen 7 bildet sich in der Klemmphase somit an der Unterseite der Stromschiene ein Zentrier- und Kompaktierraum, in dem der Leiter beim Tätigen des Anschlusses automatisch zentriert wird.If an electrical conductor 10 is now to be connected, the tension spring 1 is against their spring force is pressed into the open position so that the passage opening 6 of the clamping leg 5 on the underside of the busbar 2 released so far is that the conductor 10 can be inserted (Figure 2). With the release of the Tension spring 1 is by the spring force of the electrical conductor 10 against the bottom the busbar 2 clamped and contacted there. Thanks to the slopes 7 forms thus a centering and at the bottom of the busbar in the clamping phase Compacting room in which the conductor automatically makes the connection is centered.

In dem Klemmschema nach Figur 3 illustriert die Abbildung a, daß diese Zentrierung für einen einzelnen anzuschließenden Leiter 10 eine besonders sichere Klemmung und damit Kontaktierung bewirkt, da sich im Verhältnis zum Klemmschenkel 5 mehrere Klemmpunkte ergeben, die in Abbildung a durch Pfeile gekennzeichnet sind. Im dargestellten Ausführungsbeispiel ergeben sieh zwei Klemmpunkte jeweils an den Schrägen 7 der Durchtrittsöffnung 6 sowie ein weiterer Klemmpunkt am Boden der durch die Schrägen 7 gebildeten Verjüngungszone.In the clamping diagram according to Figure 3, Figure a illustrates that this centering a particularly secure clamping for a single conductor 10 to be connected and thus contacting, because in relation to the clamping leg 5 result in several clamping points, indicated by arrows in Figure a are. In the illustrated embodiment, there are two clamping points each on the bevels 7 of the passage opening 6 and a further clamping point on Bottom of the taper zone formed by the bevels 7.

Die Abbildung b der Figur 3 illustriert die zuverlässige Klemmung und damit Kontaktierung zweier Leiter gleichen Durchmessers, deren Lage zueinander, zum Klemmschenkel und zur Stromschiene sich in der Klemmphase dank der Zentrierung und Kompaktierung automatisch ergibt.Figure b of Figure 3 illustrates the reliable clamping and thus contacting two conductors of the same diameter, their position to each other, to Clamp legs and to the busbar in the clamping phase thanks to the centering and compaction results automatically.

Die Abbildung c des Klemmschemas nach Figur 3 illustriert die ebenfalls gewährleistete zuverlässige Klemmung dank der Zentrierung und Kompaktierung in der Verjüngungszone auch für zwei Leiter unterschiedlichen Durchmessers.Figure c of the clamping scheme according to Figure 3 illustrates the also guaranteed reliable clamping thanks to the centering and compacting in the Taper zone also for two conductors of different diameters.

Die Abbildung d des Klemmschemas nach Figur 3 illustriert, daß unter weitgehendem Eintritt der Schrägen 7 der Durchtrittsöffnung 6 des Klemmschenkels 5 in die Ausnehmungen 8 auch ein sehr kleiner Leiter im Bodenbereich der Verjüngungszone zuverlässig festgeklemmt und damit kontaktiert werden kann. The illustration d of the clamping scheme according to FIG. 3 illustrates that under extensive conditions Entry of the bevels 7 of the passage opening 6 of the clamping leg 5 into the Recesses 8 also a very small conductor in the bottom area of the taper zone can be reliably clamped and contacted.

Dank der Verjüngungszone können ebenfalls zuverlässig und problemlos auch mehrdrähtige Leiter, insbesondere auch feindrähtige Leiter, zuverlässig angeschlossen werden.Thanks to the rejuvenation zone can also be reliable and easy too Multi-wire conductors, especially fine-wire conductors, reliably connected become.

In zweckmäßiger Ausgestaltung ist die Unterseite der Stromschiene 2 im möglichen Leiteranschlußbereich mit einer Riffelung 11 versehen, die zur besonders guten Festlegung der Leiter beitragen. In weiterer zweckmäßiger Ausgestaltung kann mittig an der Unterseite der Stromschiene 2 eine Einwölbung 12 vorgesehen sein, in die sich in einigen Anwendungsfällen ein Leiter mit einem Teil seines Außenmantels einfügen kann, was ebenfalls zur sicheren Festsetzung beitragen kann. Für andere Anwendungsfälle kann es zweckmäßig sein, die Unterseite der Stromschiene insoweit auch in der möglichen Klemmzone insgesamt eben zu belassen, wie in Figur 4 dargestellt.In an expedient embodiment, the underside of the busbar 2 is possible Conductor connection area provided with a corrugation 11, which is particularly good Down the ladder. In a further expedient embodiment, the center can a bulge 12 may be provided on the underside of the busbar 2 in which in some applications is a conductor with part of its outer sheath can insert, which can also contribute to secure fixing. For others Use cases, it may be appropriate to the bottom of the busbar insofar as to be left in the possible clamping zone as a whole, as in FIG 4 shown.

Claims (5)

Zugfederklemme mit einer Stromschiene (2) und einer Zugfeder (1), die einen auf der Stromschiene (2) aufliegenden Schenkel (3), einen gebogenen Rückenbereich (4) und einen Klemmschenkel (5) hat, in dem sich eine Durchtrittsöffnung (6) für die Stromschiene (2) befindet, wobei die untere Begrenzung der Durchtrittsöffnung (6) einen eingeführten elektrischen Leiter (10) an der Unterseite der Stromschiene (2) festklemmt, dadurch gekennzeichnet, daß die untere Begrenzung der Durchtrittsöffnung (6) durch zum freien Ende des Klemmschenkels (5) hin konvergierende Schrägen (7) leiterzentrierend ausgebildet ist.Tension spring clamp with a busbar (2) and a tension spring (1), which has a leg (3) resting on the busbar (2), a curved back area (4) and a clamping leg (5) in which there is a passage opening (6) for the busbar (2), the lower limit of the passage opening (6) clamping an inserted electrical conductor (10) on the underside of the busbar (2), characterized in that the lower limit of the passage opening (6) through to the free end of the clamping leg (5) converging bevels (7) is centered on the conductor. Zugfederklemme nach Anspruch 1, dadurch gekennzeichnet, daß in der Stromschiene (2) beidseitig mit den Schrägen (7) der Durchtrittsöffnung (6) korrespondierende Ausnehmungen (8) vorgesehen sind, in die die Schrägen (7) der Durchtrittsöffnung (6) bei Leiterklemmung eintreten können.Tension spring clamp according to claim 1, characterized in that recesses (8) are provided in the busbar (2) on both sides with the bevels (7) of the passage opening (6), into which the bevels (7) of the passage opening (6) enter when the conductor is clamped can. Zugfederklemme nach Anspruch 2, dadurch gekennzeichnet, daß die Ausnehmungen (8) einen Boden (9) mit einem dem Verlauf der Schrägen (7) entsprechenden Schrägverlauf haben.Tension spring clamp according to claim 2, characterized in that the recesses (8) have a bottom (9) with an inclined course corresponding to the course of the bevels (7). Zugfederklemme nach einem der vorhergehenden Ansprüche dadurch gekennzeichnet, daß die Stromschiene (2) unterseitig in ihrem Leiterklemmbereich eine Riffelung (11) aufweist.Tension spring clamp according to one of the preceding claims, characterized in that the busbar (2) has a corrugation (11) on the underside in its conductor clamping area. Zugfederklemme nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Stromschiene (2) mittig auf ihrer Unterseite im Klemmbereich eine Einwölbung (12) aufweist.Tension spring clamp according to one of the preceding claims, characterized in that the busbar (2) has a bulge (12) centrally on its underside in the clamping area.
EP00103009A 1999-04-14 2000-02-15 Spring clamp Withdrawn EP1045474A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19916755 1999-04-14
DE19916755A DE19916755B4 (en) 1999-04-14 1999-04-14 tension spring

Publications (2)

Publication Number Publication Date
EP1045474A2 true EP1045474A2 (en) 2000-10-18
EP1045474A3 EP1045474A3 (en) 2002-02-13

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EP00103009A Withdrawn EP1045474A3 (en) 1999-04-14 2000-02-15 Spring clamp

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US (1) US6270383B1 (en)
EP (1) EP1045474A3 (en)
DE (1) DE19916755B4 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2954604A1 (en) * 2009-12-22 2011-06-24 Legrand France Electrical connecting terminal for use in insulated housing of shaft of e.g. electrical plug, has contact plates with convexities provided on sides of opening of one of arm of clamp spring along guide direction of wire strip of conductor
EP2466689A1 (en) * 2010-12-15 2012-06-20 BJB GmbH & Co. KG Clamp contact
CN102570068A (en) * 2010-12-15 2012-07-11 Bjb两合公司 Clamp contact
WO2013110363A1 (en) 2012-01-26 2013-08-01 Pepperl + Fuchs Gmbh Tension-spring/screw terminal
WO2020050798A3 (en) * 2018-07-04 2020-06-04 Eae Elektrik Asansor Endustrisi Insaat Sanayi Ve Ticaret Anonim Sirketi An additional connection module for busbar

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US6270383B1 (en) 2001-08-07
DE19916755A1 (en) 2000-10-19
EP1045474A3 (en) 2002-02-13
DE19916755B4 (en) 2007-06-28

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