EP0139826B1 - Terminal for electrical connection to a bus bar - Google Patents

Terminal for electrical connection to a bus bar Download PDF

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Publication number
EP0139826B1
EP0139826B1 EP84106096A EP84106096A EP0139826B1 EP 0139826 B1 EP0139826 B1 EP 0139826B1 EP 84106096 A EP84106096 A EP 84106096A EP 84106096 A EP84106096 A EP 84106096A EP 0139826 B1 EP0139826 B1 EP 0139826B1
Authority
EP
European Patent Office
Prior art keywords
housing
opening
conductor
connecting terminal
bus bar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84106096A
Other languages
German (de)
French (fr)
Other versions
EP0139826A1 (en
Inventor
Wolfgang Schild
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.)
Ca Weidmueller & Co GmbH
Weidmueller Interface GmbH and Co KG
Original Assignee
Ca Weidmueller & Co GmbH
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 Ca Weidmueller & Co GmbH, Weidmueller Interface GmbH and Co KG filed Critical Ca Weidmueller & Co GmbH
Publication of EP0139826A1 publication Critical patent/EP0139826A1/en
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Publication of EP0139826B1 publication Critical patent/EP0139826B1/en
Expired 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
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/502—Bases; Cases composed of different pieces
    • H01R13/506—Bases; Cases composed of different pieces assembled by snap action of the parts
    • 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
    • H01R4/02—Soldered or welded connections

Definitions

  • the invention relates to a connecting terminal for connecting an electrical conductor to a busbar, with a metal drawbar which can be adjusted by means of a clamping screw and a detachable, additional piece made of plastic which has an access opening to the clamping screw.
  • connection terminals DE-B-2 402 087
  • the additional piece made of plastic can already contain a labeling surface.
  • a screw locking device is also provided for the clamping screw, the access opening to the clamping screw also providing a certain guidance for the screwdriver, but such additional pieces only offer insufficient protection against accidental contact. However, good protection against accidental contact is very desirable if the busbars are not at a zero potential.
  • connection terminals are first loosely threaded in large numbers on a busbar.
  • the busbar also has the function of a mounting rail.
  • the definitive definition of the connection terminals on the busbar only happens at the same time and together with the connection of the conductor to the drawbar.
  • the connection terminals initially have an extremely unstable seat on this. H. the insertion of the conductor into the connection terminal and its fixing by the drawbar, considerably.
  • terminal housings are known, including those made of collapsible shell elements. So shows z. B. FR-A-1 224 522 a branch terminal. Here a secondary conductor is fixed to a main conductor by means of a bracket connection. After the branch has been installed, the terminal box is assembled around the branch.
  • the present invention has for its object to provide a terminal of the generic type, which ensures both a complete protection against contact and a very simple conductor assembly.
  • the solution according to the invention consists in that the additional piece is designed as a housing which encloses the drawbar and is formed from two parts which can be locked together and which is provided with a conductor insertion opening and a lead-through opening for the busbar, the lead-through opening being designed to be clamping.
  • the additional piece now completely encloses the drawbar, there is also complete protection against accidental contact.
  • the closed housing formed by the additional piece only has the through opening for the busbar and the conductor insertion opening.
  • the conductor insertion opening enables the conductor to be inserted quickly and precisely into the clamping point. Due to the closed design, it is also impossible to inadvertently insert the conductor too far for a given stripping length of this conductor. It is therefore impossible for part of the conductor insulation to be included in the clamping if it is inserted too far. Because the feed-through opening for the busbar is designed to be clamped, it is now also possible to ensure a relatively tight fit of the connecting terminal even before and during the conductor connection. The conductor can therefore be connected quietly and reliably, in particular without interference from unintentional movements of the connection terminal on the busbar.
  • the two housing parts are held together not only by simple locking pins but by stable locking hooks.
  • the tension bracket 1, in which the clamping screw 2 is screwed in on the upper side is completely surrounded by a closed housing in which it moves.
  • the housing consists of the two shell halves 3, which differ from one another only in the mirror-image arrangement of the openings for the conductor entry.
  • the housing formed from the shell halves 3 consists of an insulating plastic.
  • the two shell halves 3 together form one in the upper region of the housing stepped access opening 4 through which a screwdriver for actuating the clamping screw 2 can be inserted in a guided manner.
  • the two shell halves 3 also each have a feed-through opening 5 for the busbar in their central region, so that the busbar 6 can be pushed through the walls of the housing and the tension bracket 1.
  • the through openings 5 are designed to be clamped, in the exemplary embodiment shown in that a small slot opening 7 is provided in the shell halves 3 above the through opening 5 and a small material projection in the form of a small bead is left on the adjacent inner edge of the through openings 5, or else Overall, this edge has a small protrusion into the opening so that the busbar 6 deforms the adjacent material area in the direction of the slot opening 7 a little bit elastically when passing through, and thereby the terminal overall on the busbar a certain tight fit even before connecting a conductor receives, which enables a quiet and safe connection of the conductor.
  • the two shell halves 3 also form a conductor insertion opening 8, each of which has a correspondingly half-sized cutout after their assembly, which enables a conductor 9 to be connected to be inserted quickly and accurately into the clamping zone.
  • the inserted conductor is clamped against the underside of the busbar 6 by the bottom area of the pull bracket 1 (see FIG. 2).
  • the two shell halves 3 consist of a plastic with insulating properties. The housing formed from the two shell halves 3 thus provides complete protection against accidental contact for the metallic drawbar completely enclosed in the housing.
  • each of the shell halves 3 carries such a latching hook 10 at the top in one corner and at the bottom in the other corner, 10 receptacles 11 being provided in the corresponding opposite corners of the other shell half for snappingly accommodating these latching hooks, into which the latching hooks 10 snap-fit can.
  • the pulling bracket 1 has in its bottom region which clamps the conductor 9, on both sides, inwardly facing deposits 12, while at a corresponding point, flat projections 13 are formed on the inner walls of the shell halves 3 below the lead-through openings 5 for the busbar, which engage in the shoulders 12 when the connecting terminal is assembled.
  • this configuration prevents that, when connecting fine-stranded conductors, individual wires of such a fine-stranded conductor can inadmissibly get between the drawbar and the inner wall of the housing.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Description

Die Erfindung betrifft eine Anschlußklemme zum Anschließen eines elektrischen Leiters an eine Sammelschiene, mit einem mittels einer Klemmschraube vestellbaren metallischen Zugbügel und einem rastend festlegbaren, eine Zugangsöffnung zur Klemmschraube aufweisenden Zusatzstück aus Kunststoff.The invention relates to a connecting terminal for connecting an electrical conductor to a busbar, with a metal drawbar which can be adjusted by means of a clamping screw and a detachable, additional piece made of plastic which has an access opening to the clamping screw.

Bei derartigen bekannten Anschlußklemmen (DE-B-2 402 087) kann das Zusatzstück aus Kunststoff schon eine Bezeichnungsfläche beinhalten. Es ist auch eine Schraubensicherung für die Klemmschraube vorgesehen, wobei die Zugangsöffnung zur Klemmschraube auch eine gewisse Führung für den .Schraubendreher ergibt, doch bieten derartige Zusatzstücke nur einen unzureichenden Berührungsschutz. Ein guter Berührungsschutz ist jedoch dann sehr erwünscht, wenn die Sammelschienen nicht an einem Null-Potential liegen.In such known connection terminals (DE-B-2 402 087), the additional piece made of plastic can already contain a labeling surface. A screw locking device is also provided for the clamping screw, the access opening to the clamping screw also providing a certain guidance for the screwdriver, but such additional pieces only offer insufficient protection against accidental contact. However, good protection against accidental contact is very desirable if the busbars are not at a zero potential.

Derartige Anschlußklemmen werden zahlreich zunächst lose auf einer Sammelschiene aufgefädelt. Die Sammelschiene hat dabei auch zugleich die Funktion einer Tragschiene. Das definitive Festlegen der Anschlußklemmen auf der Sammelschiene geschieht dabei erst zeitgleich und zusammen mit dem Anschließen des Leiters am Zugbügel. Infolge der notwendigen Verschiebbarkeit auf der Sammelschiene haben die Anschlußklemmen zunächst auf dieser einen äußerst labilen Sitz. Dies gestaltet die Leitermontage, d. h. das Einstecken des Leiters in die Anschlußklemme und dessen Festlegen durch den Zugbügel, erheblich.Such terminals are first loosely threaded in large numbers on a busbar. The busbar also has the function of a mounting rail. The definitive definition of the connection terminals on the busbar only happens at the same time and together with the connection of the conductor to the drawbar. As a result of the necessary displaceability on the busbar, the connection terminals initially have an extremely unstable seat on this. H. the insertion of the conductor into the connection terminal and its fixing by the drawbar, considerably.

Bei anderen Arten von Klemmen zum Anschließen elektrischer Leiter, die nicht zum Auffädeln auf Sammelschienen gedacht sind, sind Klemmengehäuse, auch solche aus zusammenfügbaren Schalenelementen, bekannt. So zeigt z. B. die FR-A-1 224 522 eine- Abzweigklemme. Hier wird ein Nebenleiter mittels einem Bügelanschluß an einem Hauptleiter festgelegt. Nach fertiger Installation des Abzweiges wird das Klemmengehäuse um den Abzweig herum zusammengefügt.In other types of terminals for connecting electrical conductors, which are not intended to be threaded onto busbars, terminal housings are known, including those made of collapsible shell elements. So shows z. B. FR-A-1 224 522 a branch terminal. Here a secondary conductor is fixed to a main conductor by means of a bracket connection. After the branch has been installed, the terminal box is assembled around the branch.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Anschlußklemme der gattungsgemäßen Art zu schaffen, die zugleich sowohl einen vollständigen Berührungsschutz als auch eine denkbar einfache Leitermontage gewährleistet.The present invention has for its object to provide a terminal of the generic type, which ensures both a complete protection against contact and a very simple conductor assembly.

Die erfindungsgemäße Lösung besteht darin, daß das Zusatzstück als den Zugbügel umschließendes, aus zwei miteinander verrastbaren Teilstücken gebildetes Gehäuse ausgebildet ist, das mit einer Leitereinstecköffnung und einer Durchführungsöffnung für die Sammelschiene versehen ist, wobei die Durchführungsöffnung für die Sammelschiene klemmend ausgebildet ist.The solution according to the invention consists in that the additional piece is designed as a housing which encloses the drawbar and is formed from two parts which can be locked together and which is provided with a conductor insertion opening and a lead-through opening for the busbar, the lead-through opening being designed to be clamping.

Da nunmehr das Zusatzstück den Zugbügel vollständig umschließt, ist auch ein vollständiger Berührungsschutz gegeben. Das von dem Zusatzstück gebildete geschlossene Gehäuse hat dabei neben der Zugangsöffnung zur Klemmschraube lediglich die Durchführungsöffnung für die Sammelschiene sowie die Leitereinstecköffnung. Die Leitereinstecköffnung ermöglicht ein zielgerechtes und schnelles Einführen des Leiters in die Klemmstelle. Durch die geschlossene Bauweise ist auch ein versehentlich zu weites Einführen des Leiters bei vorgegebener Abisolierlänge dieses Leiters unmöglich. Es ist von daher ausgeschlossen, daß durch zu weites Einstecken ein Teil der Leiterisolation mit in die Klemmung einbezogen wird. Dadurch, daß die Durchführungsöffnung für die Sammelschiene klemmend ausgebildet ist, läßt sich nunmehr auch ein relativ fester Sitz der Anschlußklemme auch schon vor und während des Leiteranschlusses gewährleisten. Das Anschließen des Leiters kann von daher ruhig und zuverlässig, insbesondere ohne Störung durch unbeabsichtigte Bewegungen der Anschlußklemme auf der Sammelschiene, erfolgen.Since the additional piece now completely encloses the drawbar, there is also complete protection against accidental contact. In addition to the access opening to the clamping screw, the closed housing formed by the additional piece only has the through opening for the busbar and the conductor insertion opening. The conductor insertion opening enables the conductor to be inserted quickly and precisely into the clamping point. Due to the closed design, it is also impossible to inadvertently insert the conductor too far for a given stripping length of this conductor. It is therefore impossible for part of the conductor insulation to be included in the clamping if it is inserted too far. Because the feed-through opening for the busbar is designed to be clamped, it is now also possible to ensure a relatively tight fit of the connecting terminal even before and during the conductor connection. The conductor can therefore be connected quietly and reliably, in particular without interference from unintentional movements of the connection terminal on the busbar.

Weitere Ausgestaltungen der erfindungsgemäßen Anschlußklemme sind in den abhängigen Ansprüchen gekennzeichnet.Further configurations of the connecting terminal according to the invention are characterized in the dependent claims.

Hervorzuheben ist dabei eine Ausbildung, nach der der Zugbügel in seinem Bodenbereich nach innen gerichtete Absetzungen aufweist und an den Gehäuseinnenwänden Vorsprünge vorgesehen sind, die in diese Absetzungen eingreifen. Hierdurch lassen sich auch Leiterfehleinsteckungen von feindrähtigen Leitern vermeiden, da dank dieser Ausgestaltung Einzeladern derartiger feindrähtiger Leiter nicht mehr zwischen den Zugbügel und die innere Gehäusewand geraten können.Emphasis should be given to a design according to which the tension bracket has inwardly directed deposits in its base region and projections are provided on the inner walls of the housing which engage in these deposits. In this way, faulty insertion of fine-stranded conductors can also be avoided, since thanks to this configuration, single-stranded conductors of such fine-stranded conductors can no longer get between the tension bow and the inner housing wall.

Im Hinblick auf mögliche mechanische Belastungen des Gehäuses, wie sie beim Ausrichten des Leiters auftreten können, werden in weiterer zweckmäßiger Ausgestaltung die beiden Gehäuseteile auch nicht nur durch enfache Rastzapfen, sondern durch stabile Rasthaken zusammengehalten.With regard to possible mechanical loads on the housing, such as can occur when aligning the conductor, in a further expedient embodiment the two housing parts are held together not only by simple locking pins but by stable locking hooks.

Ein Ausführungsbeispiel einer derartigen Anschlußklemme wird nachstehend unter Bezugnahme auf die Zeichnung näher beschrieben.An embodiment of such a terminal is described below with reference to the drawing.

Es zeigen

  • Figur 1 eine sprengbildliche Darstellung einer derartigen Anschlußklemme,
  • Figur 2 einen im oberen Bereich durch die Anschlußklemmenmitte, im unteren Bereich durch eine der Verrastungszonen geführten Querschnitt durch eine derartige Anschlußklemme.
Show it
  • FIG. 1 shows an exploded view of such a connection terminal,
  • 2 shows a cross section through such a terminal in the upper region through the center of the connecting terminal and in the lower region through one of the latching zones.

Bei dem in den Figuren 1 und 2 dargestellten Ausführungsbeispiel der Anschlußklemme ist der Zugbügel 1, in dem oberseitig die Klemmschraube 2 eingeschraubt ist, vollständig von einem geschlossenen Gehäuse umgeben, in dem er sich bewegt. Das Gehäuse besteht dabei aus den beiden Schalenhälften 3, die sich untereinander ausschließlich durch die spiegelbildliche Anordnung der Durchbrüche für die Leitereinführung unterscheiden.In the exemplary embodiment of the connecting terminal shown in FIGS. 1 and 2, the tension bracket 1, in which the clamping screw 2 is screwed in on the upper side, is completely surrounded by a closed housing in which it moves. The housing consists of the two shell halves 3, which differ from one another only in the mirror-image arrangement of the openings for the conductor entry.

Das aus den Schalenhälften 3 gebildete Gehäuse besteht aus einem isolierend wirkenden Kunststoff. Die beiden Schalenhälften 3 bilden im oberen Bereich des Gehäuses gemeinsam eine abgesetzte Zugangsöffnung 4, durch die hindurch auf geführte Weise ein Schraubendreher zur Betätigung der Klemmschraube 2 eingebracht werden kann.The housing formed from the shell halves 3 consists of an insulating plastic. The two shell halves 3 together form one in the upper region of the housing stepped access opening 4 through which a screwdriver for actuating the clamping screw 2 can be inserted in a guided manner.

Die beiden Schalenhälften 3 haben ferner jeweils in ihrem mittleren Bereich eine Durchführungsöffnung 5 für die Sammelschiene, so daß die Sammelschiene 6 durch die Wandungen des Gehäuses sowie den Zugbügel 1 hindurchgesteckt werden kann. Die Durchführungsöffnungen 5 sind klemmend ausgebildet, und zwar im dargestellten Ausführungsbeispiel dadurch, daß oberhalb der Durchführungsöffnung 5 jeweils eine kleine Schlitzöffnung 7 in den Schalenhälften 3 vorgesehen ist und am benachbarten Innenrand der Durchführungsöffnungen 5 ein kleiner Materialvorsprung in Form eines kleinen Wulstes belassen ist, oder aber insgesamt dieser Rand eine kleine Vorwölbung in die Öffnung hinein hat, so daß die Sammelschiene 6 beim Hindurchführen hier den angrenzenden Materialbereich in Richtung auf die Schlitzöffnung 7 ein klein wenig elastisch verformt und hierdurch die Anschlußklemme insgesamt auf der Sammelschiene schon vor Anschließen eines Leiters einen gewissen Festsitz erhält, was ein ruhiges und sicheres Anschließen des Leiters ermöglicht.The two shell halves 3 also each have a feed-through opening 5 for the busbar in their central region, so that the busbar 6 can be pushed through the walls of the housing and the tension bracket 1. The through openings 5 are designed to be clamped, in the exemplary embodiment shown in that a small slot opening 7 is provided in the shell halves 3 above the through opening 5 and a small material projection in the form of a small bead is left on the adjacent inner edge of the through openings 5, or else Overall, this edge has a small protrusion into the opening so that the busbar 6 deforms the adjacent material area in the direction of the slot opening 7 a little bit elastically when passing through, and thereby the terminal overall on the busbar a certain tight fit even before connecting a conductor receives, which enables a quiet and safe connection of the conductor.

Die beiden Schalenhälften 3 bilden ferner durch jeweils entsprechend halbgroße Aussparungen nach ihrer Zusammenfügung eine Leitereinstecköffnung 8, die ein schnelles, zielgerechtes Einführen eines anzuschließenden Leiters 9 in die Klemmzone ermöglicht. Der eingesteckte Leiter wird dabei von dem Bodenbereich des Zugbügels 1 gegen die Unterseite der Sammelschiene 6 geklemmt (siehe Figur 2).The two shell halves 3 also form a conductor insertion opening 8, each of which has a correspondingly half-sized cutout after their assembly, which enables a conductor 9 to be connected to be inserted quickly and accurately into the clamping zone. The inserted conductor is clamped against the underside of the busbar 6 by the bottom area of the pull bracket 1 (see FIG. 2).

Da die von den beiden Schalenhälften 3 gebildete Gehäusewand gegenüberliegend der Leitereinstecköffnung 8 geschlossen ist, kann ein Leiter mit einer vorgegebenen Abisolierlänge auch nicht versehentlich zu weit eingesteckt werden. Er stößt dann in jedem Fall vor die geschlossene Wand des Gehäuses und die vorzugebende Länge der Abisolierung kann so gewählt werden, daß nur ein blanker Leiterabschnitt in der Klemmzone liegt. Die beiden Schalenhälften 3 bestehen aus einem Kunststoff mit isolierenden Eigenschaften. Das aus den beiden Schalenhälften 3 gebildete Gehäuse gibt somit für den vollständig im Gehäuse eingeschlossenen metallischen Zugbügel einen vollständigen Berührungsschutz.Since the housing wall formed by the two shell halves 3 is closed opposite the conductor insertion opening 8, a conductor with a predetermined stripping length cannot be accidentally inserted too far. In any case, it then hits the closed wall of the housing and the length of the stripping to be specified can be selected so that only a bare conductor section lies in the clamping zone. The two shell halves 3 consist of a plastic with insulating properties. The housing formed from the two shell halves 3 thus provides complete protection against accidental contact for the metallic drawbar completely enclosed in the housing.

Da beispielsweise beim Leiterausrichten auf die Verbindung der beiden Schalenhälften 3 miteinander eine recht erhebliche mechanische Belastung ausgeübt werden kann, sind die beiden Schalenhälften 3 durch stabile Rasthaken 10 miteinander verrastet. Jede der Schalenhälften 3 trägt oben jeweils in der einen Ecke und unten jeweils in der anderen Ecke einen derartigen Rasthaken 10, wobei in den entsprechenden Gegenecken der anderen Schalenhälfte dann zur schnappenden Aufnahme dieser Rasthaken 10 Aufnahmen 11 vorgesehen sind, in die die Rasthaken 10 schnappend eingreifen können.Since, for example, a considerable mechanical load can be exerted on the connection of the two shell halves 3 to one another when the conductors are aligned, the two shell halves 3 are locked together by stable latching hooks 10. Each of the shell halves 3 carries such a latching hook 10 at the top in one corner and at the bottom in the other corner, 10 receptacles 11 being provided in the corresponding opposite corners of the other shell half for snappingly accommodating these latching hooks, into which the latching hooks 10 snap-fit can.

Wie insbesondere aus Figur 2 ersichtlich, weist der Zugbügel 1 in seinem den Leiter 9 klemmenden Bodenbereich beidseitig jeweils nach innen weisende Absetzungen 12 auf, während an entsprechender Stelle an den Innenwandungen der Schalenhälften 3 unterhalb der Durchführungsöffnungen 5 für die Sammelschiene flächige Vorsprünge 13 angeformt sind, die bei zusammengesetzter Anschlußklemme in die Absetzungen 12 eingreifen. Abgesehen davon, daß der Zugbügel 1 hierdurch für seine Bewegung in dem von den Schalenhälften 3 gebildeten Gehäuse eine gewisse zusätzliche Führung erhält, verhindert diese Ausgestaltung, daß beim Anschließen feindrähtiger Leiter etwa Einzeladern eines derartigen feindrähtigen Leiters unzulässigerweise zwischen den Zugbügel und die Gehäuseinnenwand geraten können.As can be seen in particular from FIG. 2, the pulling bracket 1 has in its bottom region which clamps the conductor 9, on both sides, inwardly facing deposits 12, while at a corresponding point, flat projections 13 are formed on the inner walls of the shell halves 3 below the lead-through openings 5 for the busbar, which engage in the shoulders 12 when the connecting terminal is assembled. In addition to the fact that the drawbar 1 thus receives a certain amount of additional guidance for its movement in the housing formed by the shell halves 3, this configuration prevents that, when connecting fine-stranded conductors, individual wires of such a fine-stranded conductor can inadmissibly get between the drawbar and the inner wall of the housing.

Claims (5)

1. A connecting terminal for connecting an electrical conductor (9) to a bus bar (6) comprising a metal pulling stirrup (1) which can be displaced by means of a clamping screw (2) and an additional portion (3) of plastics material which can be retainingly held in position and which has an access opening to the clamping screw (2) characterised in that the additional portion (3) is in the form of a housing which encloses the pulling stirrup (1) and wich is formed from two parts (3) which can be locked together, the housing being provided with a conductor insertion opening (8) and a through opening (5) for the bus bar (6) to pass therethrough, wherein the through opening (5) for the bus bar (6) is of a clamping nature.
2. A connecting terminal according to claim 1 characterised in that the housing is formed from two substantially identical shells (3).
3. A connecting terminal according to claim 1 or claim 2 characterised in that the two housing parts (3) are locked together by a plurality of retaining hooks (10), for each of which suitable receiving means (11) are provided on the other housing part half.
4. A connecting terminal according to claim 1 characterised in that a slot opening (7) is provided above the through opening (5) in the wall of the housing and a small material projection is provided on the adjacent edge of the through opening.
5. A connecting terminal according to claim 1 characterised in that in its bottom region the pulling stirrup (1) has inwardly directed step portions (12) and provided on the inside walls of the housing are projections (13) which engage into said step portions (12).
EP84106096A 1983-07-08 1984-05-29 Terminal for electrical connection to a bus bar Expired EP0139826B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833324654 DE3324654A1 (en) 1983-07-08 1983-07-08 CONNECTING TERMINAL FOR CONNECTING AN ELECTRICAL CONDUCTOR TO A BUSBAR
DE3324654 1983-07-08

Publications (2)

Publication Number Publication Date
EP0139826A1 EP0139826A1 (en) 1985-05-08
EP0139826B1 true EP0139826B1 (en) 1988-05-25

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EP84106096A Expired EP0139826B1 (en) 1983-07-08 1984-05-29 Terminal for electrical connection to a bus bar

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EP (1) EP0139826B1 (en)
DE (2) DE3324654A1 (en)

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US7473146B2 (en) 2006-11-27 2009-01-06 Tyco Electronics Brasil Ltda Busbar assembly
ITMI20071390A1 (en) 2007-07-12 2009-01-13 Morsettitalia Spa TIGHTENING ELEMENT WITH L-SHAPED CONDUCTOR ELEMENT FOR THE CONNECTION OF ELECTRIC WIRES
CN102412444A (en) * 2010-09-20 2012-04-11 西门子公司 Cage type terminal used for electric device and electric device employing cage type terminal

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FR1224522A (en) * 1959-05-15 1960-06-24 Removable connection terminal insulator
DE2616930C3 (en) * 1976-04-15 1979-01-11 F. Wieland Elektrische Industrie Gmbh, 8600 Bamberg Electric double terminal block
DE3145417C2 (en) * 1981-11-16 1983-10-13 Phönix Elektrizitätsgesellschaft H. Knümann GmbH & Co KG, 4933 Blomberg Electrical connector

Also Published As

Publication number Publication date
DE3324654A1 (en) 1985-01-17
DE3324654C2 (en) 1987-01-15
EP0139826A1 (en) 1985-05-08
DE3471553D1 (en) 1988-06-30

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