EP0578576B1 - Electric connection terminal - Google Patents

Electric connection terminal Download PDF

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Publication number
EP0578576B1
EP0578576B1 EP93401775A EP93401775A EP0578576B1 EP 0578576 B1 EP0578576 B1 EP 0578576B1 EP 93401775 A EP93401775 A EP 93401775A EP 93401775 A EP93401775 A EP 93401775A EP 0578576 B1 EP0578576 B1 EP 0578576B1
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EP
European Patent Office
Prior art keywords
connection terminal
electric connection
fixed jaw
cables
jaw
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 - Lifetime
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EP93401775A
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German (de)
French (fr)
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EP0578576A1 (en
Inventor
Jean-Jacques Lefebvre
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Individual
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Individual
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • 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
    • H01R4/363—Conductive members located under tip of screw with intermediate part between tip and conductive member

Definitions

  • the present invention relates to an electrical connection terminal for clamping two ends of previously stripped cables.
  • This terminal is preferably of the type comprising a fixed jaw in the form of a U-section cradle which serves as a receptacle for the cable ends, and a movable jaw associated with a clamping system of the screw-nut type positioned in the opening of the cradle, between its lateral branches.
  • the nut of the clamping system cooperates with the ends of the lateral branches of the cradle by a system of the dovetail type.
  • This dovetail-shaped system makes it possible to reinforce the tightening and it avoids the separation of the lateral branches of the cradle during the tightening of the cables.
  • This type of terminal is for example used for the connection of the electric cables supplying the candelabra.
  • Document FR-A-2 312 129 describes a connection terminal of the same type, in which the mobile jaw can be separated from the fixed jaw.
  • the movable jaw is not permanently linked to the terminal and the operator can drop it or even lose it during improper handling.
  • the electrical connection terminal comprises means which allow on the one hand, to move the movable jaw and its clamping system, to clear the opening of the cradle and make it possible to introduce and lay the ends of cables in the bottom of the fixed jaw, and on the other hand, to maintain said movable jaw linked to the terminal for the make it captive.
  • this terminal consists of an insulating support in the form of a box, in which the fixed jaw is positioned; this housing is provided with a slide system for guiding a slide carrying the movable jaw and its clamping system, which slide is closed at its ends to make captive said slide.
  • the movable jaw and its clamping system are thus carried by a sort of drawer which can very easily be handled by an operator.
  • the movable jaw can thus be very largely released by simple translation to allow the passage and introduction of the cable ends into the fixed jaw.
  • the repositioning of said movable jaw on the fixed jaw to clamp and connect the cable ends is carried out by a reverse translation operation.
  • the peripheral box also makes it possible to isolate the various parts from the external environment, in particular to comply with the laws and standards in force.
  • the fixed jaw made of brass for example, is preferably housed in the open face of the housing, facing the cables to be connected.
  • the insulating housing has a generally parallelepiped shape; it is preferably made up of two half-shells assembled by clips with clips and crimped hot or by a technique of welding by high frequency or ultrasound.
  • the insulating housing has lateral cheeks which extend the open face at the level of which the fixed jaw is housed. This feature protects access to the cable ends and the fixed jaw.
  • the movable slide consists of a flat base provided with a hole for the passage of the clamping screw.
  • This base is extended, on one side, by a protective chimney of the upper end of the clamping screw and, on the other side, by two lateral cheeks provided with hooks, on which the corresponding nut is fixed, by simple click for example.
  • the lateral edges of the base of the slide are guided in longitudinal grooves which form slides and which extend parallel to the longitudinal axis of the cables. These grooves are made at the front face of the housing, the slide is trapped in these grooves.
  • the base of the slide is advantageously provided with lateral pins arranged to penetrate into slots provided in the extension of the longitudinal grooves of the housing.
  • These tenons may include hooks which, cooperating with the slots, allow the slide to be locked on the opening of the fixed jaw, in the cable tightening position.
  • the longitudinal guide grooves of the slide are preferably adapted to tighten the latter slightly by force, when it is released from the fixed jaw.
  • the movable jaw consists of a conductive pad, made of brass for example, mounted movably at the end of the clamping screw.
  • This pellet is guided in the fixed jaw by median grooves in the form of arcs of a circle produced on the internal faces of its lateral branches.
  • the nut of the tightening system has an orifice intended for the reception of a bypass plug which feeds the circuit breaker and the terminal may include means for fixing a connecting bar, possibly in comb shape, used to connect two or more connection terminals.
  • Terminal 1 shown in FIGS. 1 and 2, for the electrical connection of the ends of cables 2, 2 ′, consists mainly of an insulating housing 3 made of suitable plastic, of a fixed jaw 4 in the form of a cradle U-shaped section and a movable jaw 5 associated with a tightening system 6 of the screw-nut type.
  • the fixed jaw 4 and the movable jaw 5 are made of conductive material, of the brass type for example; they define a clamping vice to crush and bring into contact the ends of the cables 2, 2 'to be connected.
  • the insulating housing 3 has a generally parallelepiped shape consisting of two side walls 7 and 8, of a front face 9, of a rear face 10, of a bottom face 11 and of an upper face 12. It consists of two symmetrical half-shells assembled by means of pins 13 suitably distributed which cooperate with adapted orifices 14. This assembly is advantageously supplemented by hot crimping, by high frequency welding or by ultrasound.
  • the underside 11 of the housing 3 is located opposite the cables 2, 2 'to be connected; she is open and she comprises a housing for receiving and positioning the fixed jaw 4 in the form of a cradle.
  • This fixed jaw 4 is positioned so that its opening 15 is oriented towards the front face 9 of the insulating housing. Its two lateral wings 16 and 17 are respectively pressed against the internal faces of the lateral walls 7 and 8 of the housing and its bottom 18 comes to bear on the rear face 10.
  • Note in FIG. 1 the presence of median grooves 20 made on the internal faces of the lateral wings of the cradle 4; as will be seen below, these grooves 20 allow the mobile jaw 5 to be guided when the vice is tightened.
  • the end of the lateral wings 16 and 17 of the cradle 4 has an internal return 21 in the form of a half dovetail, the function of which will be explained below.
  • the front face 9 of the housing 3 is open and has longitudinal grooves 22 oriented inward. These grooves 22 extend over the entire length of the housing, just above the opening 15 of the cradle 4 and parallel to the longitudinal axis 23 of the cables 2, 2 'to be connected.
  • the grooves 22, facing each other, serve as slides for guiding a slide 24 carrying the movable jaw 5 and its clamping system 6.
  • This slide 24 is trapped in the grooves 22; it is made in one piece from a suitable plastic material. It consists of a flat base 25 of generally substantially rectangular shape provided with a central orifice 26 for the passage of the screw 27 which is part of the tightening system 6.
  • This base 25 is extended, upwards, by a wall protective chimney 28 intended to protect and isolate the screw 27 in all its positions.
  • the base 25 is extended downwards (FIG. 3) by two cheeks 29 each comprising a locking lug 30 at its end.
  • the two facing cheeks 29 allow the latching and the maintenance in position of the nut 31 which cooperates with the screw 27 to form the tightening system 6.
  • This nut 31 has a threaded orifice in its central part into which the clamping screw 27 is threaded.
  • the external end of this screw 27 is located in the protective chimney 28 and it can be operated by an operator by means of a key for example.
  • Its internal end carries the movable jaw 5 in the form of a conducting pad. This pad 5 is rotatably mounted at the end of the screw 27, to improve the tightening of the cables to be connected.
  • the slide 24 which carries the movable jaw 5 and its clamping system 6 can slide over the entire length of the front face 9 of the housing 3. This sliding is carried out by the operator so as to clear the opening 15 of the cradle 4 and allow the introduction and installation of the cable ends 2, 2 ', in the bottom of the fixed jaw 4, and this perpendicular to their longitudinal axis 23, along the orientation arrow 32.
  • This particular positioning does not require significant bending of the cables and it greatly facilitates the connection of rigid cables whose section is of the order of 50 mm 2 for example, of the type of those used for supplying a network of lighting candelabra.
  • the base 25 of the slide 24 serves as a spacer and maintains the spacing of the side walls 7 and 8 of the insulating housing.
  • the slide In the "release" position, the slide is largely pushed towards the upper face 12 of the housing.
  • the longitudinal grooves 22 are adapted to tighten and wedge the slider 24 in order to prevent it from falling back during the cable placement operation. This slight tightening keeps the fixed jaw 5 in the released position and the operator can dispense with maintaining it in any way.
  • This holding in the released position can also be obtained by a simple boss arranged in the groove.
  • the slide 24 is lowered manually, by simple translation, to position the movable jaw 5 and its clamping system 6 in the opening 15 of the fixed jaw 4.
  • This clamping position is advantageously locked by means of lateral studs 34 provided in the extension of the edges of the base 25 of the slide 24.
  • These studs 34 are arranged to plug into slots 35 provided on the underside 11 of the housing 3, in the extension of the longitudinal grooves 22. They can also be provided with hooks at their end to be locked in the active position.
  • the nut 31 is located between the lateral wings 16 and 17 of the fixed jaw 4, just below the returns 21 in the form of a half-dovetail.
  • the lateral edges of the nut 31 include stops 36 which have a shape corresponding to that of the returns 21 to ensure proper support and hooking during tightening, and in particular to serve as a hooking means and to avoid the spacing of the lateral wings of the fixed jaw during this operation.
  • the lateral faces of the nut 31 are blocked between the wings 16 and 17 of the fixed jaw 4.
  • the operation of the clamping screw 27 causes the stops 36 to be blocked on the returns 21 and the mobile jaw 5 to descend.
  • the side walls 7 and 8 of the housing 3 are preferably extended, on the underside 11 of the latter, by monobloc cheeks 38. These side cheeks extend in front of the jaw fixed 4 and their size is adapted according to the environment to protect access to the cable ends and to the fixed jaw.
  • terminal 1 comprises means for receiving a bypass plug 39 for supplying a circuit breaker not shown.
  • These means consist of a female socket 40 defined by an orifice made in the brass nut 31 and in one of the cheeks 29 which holds it.
  • This plug 39 and its supply wire pass through an appropriate opening made in the upper face 12 of the insulating housing 3.
  • connection terminals 1 of the same type can be connected.
  • the terminal 1 comprises means for fixing a connecting bar 41 which is insulated between its ends.
  • These means consist of a slot 42, provided in the upper face 12 of the housing 3 and two communicating orifices 43 and 44 provided respectively in the bottom 18 of the fixed jaw 4 and in the rear wall 10 of said housing.
  • the bar 41 has, at each of its ends, a flat plug 45 in which is an orifice 46.
  • This bar 41 may consist of a single insulated wire between its two ends, as shown in the figure 1, or be in the form of a comb in order to directly connect several boxes.
  • the electrical connection terminal according to the invention may also include a reception groove 48 in the form of a dovetail, associated with a central orifice 49, to allow positioning on a fixing rail not shown.
  • the electrical connection terminal described above is particularly suitable for the connection of candelabra power cables. Of course, it can be used in other fields and its structure will then be adapted accordingly.

Abstract

The electrical connection terminal is of the type including a fixed jaw (4) in the form of a cradle with a U-shaped cross-section which serves as receptacle for the ends of cables (2, 2'), and a movable jaw (5) associated with a clamping system (6) of the screw-nut type, positioned in the opening of the said cradle (4), between its side branches (16 and 17), and in which the nut of the clamping system interacts with the ends of the side branches of the said cradle via a system of the dovetail type in order to bear on the said ends so as to reinforce the clamping and prevent the said branches moving apart. According to the invention, this terminal includes means which, on the one hand, make it possible to move the movable jaw (5) and its clamping system (6), preferably in the form of a slider (24), in order to clear the opening (15) of the cradle (4) and to make it possible to insert and fix the ends of cables (2, 2') in the bottom of the fixed jaw (4), perpendicularly to their longitudinal axis (23), and, on the other hand, to hold the said movable jaw (5) linked to the terminal so as to make it impossible to lose it. <IMAGE>

Description

La présente invention concerne une borne de connexion électrique permettant le serrage de deux extrémités de câbles préalablement dénudés. Cette borne est de préférence du type comportant un mors fixe en forme de berceau à section à U qui sert de réceptacle pour les extrémités de câbles, et un mors mobile associé à un système de serrage du type vis-écrou positionné dans l'ouverture du berceau, entre ses branches latérales. L'écrou du système de serrage coopère avec les extrémités des branches latérales du berceau par un système du genre queue-d'aronde. Ce système en forme de queue-d'aronde permet de renforcer le serrage et il évite l'écartement des branches latérales du berceau lors du serrage des câbles.The present invention relates to an electrical connection terminal for clamping two ends of previously stripped cables. This terminal is preferably of the type comprising a fixed jaw in the form of a U-section cradle which serves as a receptacle for the cable ends, and a movable jaw associated with a clamping system of the screw-nut type positioned in the opening of the cradle, between its lateral branches. The nut of the clamping system cooperates with the ends of the lateral branches of the cradle by a system of the dovetail type. This dovetail-shaped system makes it possible to reinforce the tightening and it avoids the separation of the lateral branches of the cradle during the tightening of the cables.

Ce genre de borne est par exemple utilisée pour la connexion des câbles électriques d'alimentation des candélabres.This type of terminal is for example used for the connection of the electric cables supplying the candelabra.

Le montage des câbles sur les systèmes actuels de connexion nécessite un pliage de l'extrémité desdits câbles pour permettre leur introduction dans le mors fixe. Cette opération n'est pas très facile à réaliser, en particulier lorsque l'on manipule des câbles de gros diamètre, relativement rigides.The mounting of the cables on current connection systems requires a bending of the end of said cables to allow their introduction into the fixed jaw. This operation is not very easy to carry out, in particular when handling cables of large diameter, relatively rigid.

Le document FR-A-2 312 129 décrit une borne de connexion du même type, dans laquelle on peut désolidariser le mors mobile du mors fixe. Dans ce genre de structure, le mors mobile n'est pas lié en permanence à la borne et l'opérateur peut le laisser tomber voire même le perdre lors d'une manipulation indélicate.Document FR-A-2 312 129 describes a connection terminal of the same type, in which the mobile jaw can be separated from the fixed jaw. In this type of structure, the movable jaw is not permanently linked to the terminal and the operator can drop it or even lose it during improper handling.

Pour pallier à ces inconvénients, la borne de connexion électrique selon l'invention, du type ci-dessus, comporte des moyens qui permettent d'une part, de déplacer le mors mobile et son système de serrage, pour dégager l'ouverture du berceau et rendre possible l'introduction et la pose des extrémités de câbles dans le fond du mors fixe, et d'autre part, de maintenir ledit mors mobile lié à la borne pour le rendre imperdable. A cet effet, cette borne est constituée d'un support isolant en forme de boîtier, dans lequel est positionné le mors fixe ; ce boîtier est muni d'un système de glissière pour le guidage d'un coulisseau portant le mors mobile et son système de serrage, laquelle glissière est fermée à ses extrémités pour rendre imperdable ledit coulisseau.To overcome these drawbacks, the electrical connection terminal according to the invention, of the above type, comprises means which allow on the one hand, to move the movable jaw and its clamping system, to clear the opening of the cradle and make it possible to introduce and lay the ends of cables in the bottom of the fixed jaw, and on the other hand, to maintain said movable jaw linked to the terminal for the make it captive. To this end, this terminal consists of an insulating support in the form of a box, in which the fixed jaw is positioned; this housing is provided with a slide system for guiding a slide carrying the movable jaw and its clamping system, which slide is closed at its ends to make captive said slide.

Le mors mobile et son système de serrage sont ainsi portés par une sorte de tiroir qui peut très facilement être manipulé par un opérateur. Le mors mobile peut ainsi être très largement dégagé par simple translation pour permettre le passage et l'introduction des extrémités de câbles dans le mors fixe. Le repositionnement dudit mors mobile sur le mors fixe pour serrer et connecter les extrémités de câbles, est réalisé par une opération de translation inverse. Le boîtier périphérique permet en outre d'isoler les différentes pièces vis à vis de l'environnement extérieur, notamment pour se conformer aux législations et normes en vigueur.The movable jaw and its clamping system are thus carried by a sort of drawer which can very easily be handled by an operator. The movable jaw can thus be very largely released by simple translation to allow the passage and introduction of the cable ends into the fixed jaw. The repositioning of said movable jaw on the fixed jaw to clamp and connect the cable ends is carried out by a reverse translation operation. The peripheral box also makes it possible to isolate the various parts from the external environment, in particular to comply with the laws and standards in force.

Le mors fixe, en laiton par exemple, est de préférence logé dans la face ouverte du boîtier, en regard des câbles à connecter. Le boîtier isolant a une forme générale parallélépipédique ; il est de préférence constitué de deux demi-coquilles assemblées par des tétons à clips et serties à chaud ou par une technique de soudage par haute fréquence ou ultrasons.The fixed jaw, made of brass for example, is preferably housed in the open face of the housing, facing the cables to be connected. The insulating housing has a generally parallelepiped shape; it is preferably made up of two half-shells assembled by clips with clips and crimped hot or by a technique of welding by high frequency or ultrasound.

Selon une autre disposition de l'invention, le boîtier isolant comporte des joues latérales qui prolongent la face ouverte au niveau de laquelle est logé le mors fixe. Cette caractéristique permet de protéger l'accès aux extrémités de câbles et au mors fixe.According to another arrangement of the invention, the insulating housing has lateral cheeks which extend the open face at the level of which the fixed jaw is housed. This feature protects access to the cable ends and the fixed jaw.

Suivant une autre caractéristique, le coulisseau mobile est constitué d'une embase plane munie d'un orifice de passage de la vis de serrage. Cette embase est prolongée, d'un côté, par une cheminée de protection de l'extrémité supérieure de la vis de serrage et, de l'autre côté, par deux joues latérales munies de crochets, sur lesquelles est fixé l'écrou correspondant, par simple encliquetage par exemple.According to another characteristic, the movable slide consists of a flat base provided with a hole for the passage of the clamping screw. This base is extended, on one side, by a protective chimney of the upper end of the clamping screw and, on the other side, by two lateral cheeks provided with hooks, on which the corresponding nut is fixed, by simple click for example.

Selon une autre disposition, les arêtes latérales de l'embase du coulisseau sont guidées dans des rainures longitudinales qui forment glissières et qui s'étendent parallèlement à l'axe longitudinal des câbles. Ces rainures sont réalisées au niveau de la face avant du boîtier, le coulisseau est prisonnier de ces rainures.According to another arrangement, the lateral edges of the base of the slide are guided in longitudinal grooves which form slides and which extend parallel to the longitudinal axis of the cables. These grooves are made at the front face of the housing, the slide is trapped in these grooves.

En outre, l'embase du coulisseau est avantageusement munie de tenons latéraux agencés pour pénétrer dans des lumières prévues dans le prolongement des rainures longitudinales du boîtier. Ces tenons peuvent comporter des crochets qui, coopérant avec les lumières, permettent le verrouillage du coulisseau sur l'ouverture du mors fixe, dans la position de serrage des câbles.In addition, the base of the slide is advantageously provided with lateral pins arranged to penetrate into slots provided in the extension of the longitudinal grooves of the housing. These tenons may include hooks which, cooperating with the slots, allow the slide to be locked on the opening of the fixed jaw, in the cable tightening position.

D'autre part, les rainures longitudinales de guidage du coulisseau sont de préférence adaptées pour serrer ce dernier légèrement à force, lors de son dégagement du mors fixe. On peut également prévoir un simple bossage ou ergot, dans la rainure, pour immobiliser le coulisseau. Ces caractéristiques permettent de maintenir le coulisseau en position "dégagement" sans nécessiter de maintien quelconque par l'opérateur.On the other hand, the longitudinal guide grooves of the slide are preferably adapted to tighten the latter slightly by force, when it is released from the fixed jaw. One can also provide a simple boss or lug, in the groove, to immobilize the slide. These characteristics make it possible to maintain the slide in the "release" position without requiring any maintenance by the operator.

Selon une autre disposition de l'invention, le mors mobile consiste en une pastille conductrice, en laiton par exemple, montée de façon mobile à l'extrémité de la vis de serrage. Cette pastille est guidée dans le mors fixe par des rainures médianes en forme d'arcs de cercle réalisés sur les faces internes de ses branches latérales.According to another arrangement of the invention, the movable jaw consists of a conductive pad, made of brass for example, mounted movably at the end of the clamping screw. This pellet is guided in the fixed jaw by median grooves in the form of arcs of a circle produced on the internal faces of its lateral branches.

Selon d'autres dispositions, l'écrou du système de serrage comporte un orifice destiné à la réception d'une fiche de dérivation qui alimente le coupe-circuit et la borne peut comporter des moyens de fixation d'une barrette de liaison, éventuellement en forme de peigne, servant à relier deux ou plusieurs bornes de connexion.According to other provisions, the nut of the tightening system has an orifice intended for the reception of a bypass plug which feeds the circuit breaker and the terminal may include means for fixing a connecting bar, possibly in comb shape, used to connect two or more connection terminals.

Mais l'invention sera encore illustrée, sans être aucunement limitée, par la description suivante d'un mode de réalisation particulier, donné à titre d'exemple et représenté sur les. dessins annexés dans lesquels :

  • la figure 1 est une vue éclatée de la borne de connexion électrique selon l'invention avec le mors mobile en position "dégagement" ;
  • la figure 2 est une vue en coupe transversale montrant le mors mobile en position de serrage sur le mors fixe ;
  • la figure 3 est une vue de l'écrou de serrage du mors mobile monté sur le coulisseau support ;
  • la figure 4 est une vue isolée du mors mobile, de son système de serrage et du coulisseau support, en association avec une fiche de dérivation au coupe-circuit.
But the invention will be further illustrated, without being in no way limited by the following description of a particular embodiment, given by way of example and shown in. annexed drawings in which:
  • Figure 1 is an exploded view of the electrical connection terminal according to the invention with the movable jaw in the "release"position;
  • Figure 2 is a cross-sectional view showing the movable jaw in the clamping position on the fixed jaw;
  • Figure 3 is a view of the clamping nut of the movable jaw mounted on the support slide;
  • Figure 4 is an isolated view of the movable jaw, its clamping system and the support slide, in association with a bypass plug to the circuit breaker.

La borne 1, représentée sur les figures 1 et 2, pour la connexion électrique des des extrémités de câbles 2, 2', est principalement constituée d'un boîtier isolant 3 en matière plastique appropriée, d'un mors fixe 4 en forme de berceau à section en U et d'un mors mobile 5 associé à un système de serrage 6 du type vis-écrou.Terminal 1, shown in FIGS. 1 and 2, for the electrical connection of the ends of cables 2, 2 ′, consists mainly of an insulating housing 3 made of suitable plastic, of a fixed jaw 4 in the form of a cradle U-shaped section and a movable jaw 5 associated with a tightening system 6 of the screw-nut type.

Le mors fixe 4 et le mors mobile 5 sont réalisés en matériau conducteur, du genre laiton par exemple ; ils définissent un étau de serrage pour écraser et mettre en contact les extrémités des câbles 2, 2' à raccorder.The fixed jaw 4 and the movable jaw 5 are made of conductive material, of the brass type for example; they define a clamping vice to crush and bring into contact the ends of the cables 2, 2 'to be connected.

Le boîtier isolant 3 a une forme générale parallélépipédique constituée de deux parois latérales 7 et 8, d'une face avant 9, d'une face arrière 10, d'une face inférieure 11 et d'une face supérieure 12. Il est constitué de deux demi-coquilles symétriques assemblées au moyen de tétons 13 convenablement répartis qui coopèrent avec des orifices 14 adaptés. Cet assemblage est avantageusement complété par un sertissage à chaud, par soudage haute fréquence ou par ultra-sons.The insulating housing 3 has a generally parallelepiped shape consisting of two side walls 7 and 8, of a front face 9, of a rear face 10, of a bottom face 11 and of an upper face 12. It consists of two symmetrical half-shells assembled by means of pins 13 suitably distributed which cooperate with adapted orifices 14. This assembly is advantageously supplemented by hot crimping, by high frequency welding or by ultrasound.

La face inférieure 11 du boîtier 3 se situe en regard des câbles 2, 2' à connecter ; elle est ouverte et elle comporte un logement pour recevoir et positionner le mors fixe 4 en forme de berceau. Ce mors fixe 4 est positionné de telle sorte que son ouverture 15 soit orientée vers la face avant 9 du boîtier isolant. Ses deux ailes latérales 16 et 17 sont respectivement plaquées contre les faces internes des parois latérales 7 et 8 du boîtier et son fond 18 vient prendre appui sur la face arrière 10. On remarque sur la figure 1 la présence de rainures médianes 20 réalisées sur les faces internes des ailes latérales du berceau 4 ; comme on le verra plus loin, ces rainures 20 permettent le guidage du mors mobile 5 lors du serrage de l'étau. En outre, l'extrémité des ailes latérales 16 et 17 du berceau 4 comporte un retour interne 21 en forme de demi queue-d'aronde dont la fonction sera explicitée plus loin.The underside 11 of the housing 3 is located opposite the cables 2, 2 'to be connected; she is open and she comprises a housing for receiving and positioning the fixed jaw 4 in the form of a cradle. This fixed jaw 4 is positioned so that its opening 15 is oriented towards the front face 9 of the insulating housing. Its two lateral wings 16 and 17 are respectively pressed against the internal faces of the lateral walls 7 and 8 of the housing and its bottom 18 comes to bear on the rear face 10. Note in FIG. 1 the presence of median grooves 20 made on the internal faces of the lateral wings of the cradle 4; as will be seen below, these grooves 20 allow the mobile jaw 5 to be guided when the vice is tightened. In addition, the end of the lateral wings 16 and 17 of the cradle 4 has an internal return 21 in the form of a half dovetail, the function of which will be explained below.

La face avant 9 du boîtier 3 est ouverte et comporte des rainures longitudinales 22 orientées vers l'intérieur. Ces rainures 22 s'étendent sur toute la longueur du boîtier, juste au-dessus de l'ouverture 15 du berceau 4 et parallèlement à l'axe longitudinal 23 des câbles 2, 2' à connecter. Les rainures 22, en vis à vis, servent de glissières pour le guidage d'un coulisseau 24 portant le mors mobile 5 et son système de serrage 6. Ce coulisseau 24 est prisonnier dans les rainures 22 ; il est réalisé de façon monobloc en un matériau plastique approprié. Il est constitué d'une embase plane 25 de forme générale sensiblement rectangulaire munie d'un orifice central 26 pour le passage de la vis 27 qui fait partie du système de serrage 6. Cette embase 25 se prolonge, vers le haut, par une paroi de protection en forme de cheminée 28 destinée à protèger et isoler la vis 27 dans toutes ses positions. Latéralement, l'embase 25 se prolonge vers le bas (figure 3) par deux joues 29 comportant chacune un ergot de verrouillage 30 à son extrémité. Les deux joues 29 en vis à vis permettent l'encliquetage et le maintien en position de l'écrou 31 qui coopère avec la vis 27 pour former le système de serrage 6.The front face 9 of the housing 3 is open and has longitudinal grooves 22 oriented inward. These grooves 22 extend over the entire length of the housing, just above the opening 15 of the cradle 4 and parallel to the longitudinal axis 23 of the cables 2, 2 'to be connected. The grooves 22, facing each other, serve as slides for guiding a slide 24 carrying the movable jaw 5 and its clamping system 6. This slide 24 is trapped in the grooves 22; it is made in one piece from a suitable plastic material. It consists of a flat base 25 of generally substantially rectangular shape provided with a central orifice 26 for the passage of the screw 27 which is part of the tightening system 6. This base 25 is extended, upwards, by a wall protective chimney 28 intended to protect and isolate the screw 27 in all its positions. Laterally, the base 25 is extended downwards (FIG. 3) by two cheeks 29 each comprising a locking lug 30 at its end. The two facing cheeks 29 allow the latching and the maintenance in position of the nut 31 which cooperates with the screw 27 to form the tightening system 6.

Cet écrou 31 comporte un orifice fileté dans sa partie centrale dans lequel s'enfile la vis de serrage 27. L'extrémité externe de cette vis 27 se situe dans la cheminée de protection 28 et elle peut être manoeuvrée par un opérateur au moyen d'une clé par exemple. Son extrémité interne porte le mors mobile 5 en forme de pastille conductrice. Cette pastille 5 est montée tournante à l'extrémité de la vis 27, pour améliorer le serrage des câbles à connecter.This nut 31 has a threaded orifice in its central part into which the clamping screw 27 is threaded. The external end of this screw 27 is located in the protective chimney 28 and it can be operated by an operator by means of a key for example. Its internal end carries the movable jaw 5 in the form of a conducting pad. This pad 5 is rotatably mounted at the end of the screw 27, to improve the tightening of the cables to be connected.

Le coulisseau 24 qui porte le mors mobile 5 et son système de serrage 6 peut coulisser sur toute la longueur de la face avant 9 du boîtier 3. Ce coulissement est réalisé par l'opérateur de façon à dégager l'ouverture 15 du berceau 4 et permettre l'introduction et la pose des extrémités de câbles 2, 2', dans le fond du mors fixe 4, et ceci de façon perpendiculaire à leur axe longitudinal 23, selon la flèche d'orientation 32. Ce positionnement particulier ne nécessite pas de pliage important des câbles et il facilite grandement la connexion des câbles rigides dont la section est de l'ordre de 50 mm2 par exemple, du type de ceux utilisés pour l'alimentation d'un réseau de candélabres d'éclairage.The slide 24 which carries the movable jaw 5 and its clamping system 6 can slide over the entire length of the front face 9 of the housing 3. This sliding is carried out by the operator so as to clear the opening 15 of the cradle 4 and allow the introduction and installation of the cable ends 2, 2 ', in the bottom of the fixed jaw 4, and this perpendicular to their longitudinal axis 23, along the orientation arrow 32. This particular positioning does not require significant bending of the cables and it greatly facilitates the connection of rigid cables whose section is of the order of 50 mm 2 for example, of the type of those used for supplying a network of lighting candelabra.

L'embase 25 du coulisseau 24 sert d'entretoise et maintient l'écartement des parois latérales 7 et 8 du boîtier isolant. En position "dégagement", le coulisseau est largement repoussé vers la face supérieure 12 du boîtier. Au niveau de cette partie supérieure, les rainures longitudinales 22 sont adaptées pour serrer et coincer le coulisseau 24 afin d'éviter que celui-ci ne retombe lors de l'opération de mise en place des câbles. Ce léger serrage maintient le mors fixe 5 en position dégagée et l'opérateur peut se dispenser de le maintenir d'une quelconque façon.The base 25 of the slide 24 serves as a spacer and maintains the spacing of the side walls 7 and 8 of the insulating housing. In the "release" position, the slide is largely pushed towards the upper face 12 of the housing. At this upper part, the longitudinal grooves 22 are adapted to tighten and wedge the slider 24 in order to prevent it from falling back during the cable placement operation. This slight tightening keeps the fixed jaw 5 in the released position and the operator can dispense with maintaining it in any way.

Ce maintien en position dégagée peut aussi être obtenu par un simple bossage disposé dans la rainure.This holding in the released position can also be obtained by a simple boss arranged in the groove.

Lorsque les extrémités dénudées des câbles 2 et 2' sont positionnées entre les ailes latérales 16 et 17 du berceau 4, sur le fond 18 de ce dernier, le coulisseau 24 est abaissé manuellement, par simple translation, pour positionner le mors mobile 5 et son système de serrage 6 dans l'ouverture 15 du mors fixe 4. Cette position de serrage est avantageusement verrouillée au moyen de tenons latéraux 34 prévus dans le prolongement des arêtes de l'embase 25 du coulisseau 24. Ces tenons 34 sont agencés pour s'enficher dans des lumières 35 prévues sur la face inférieure 11 du boîtier 3, dans le prolongement des rainures longitudinales 22. Ils peuvent également être munis de crochets à leur extrémité pour être verrouillés en position active.When the stripped ends of the cables 2 and 2 'are positioned between the lateral wings 16 and 17 of the cradle 4, on the bottom 18 of the latter, the slide 24 is lowered manually, by simple translation, to position the movable jaw 5 and its clamping system 6 in the opening 15 of the fixed jaw 4. This clamping position is advantageously locked by means of lateral studs 34 provided in the extension of the edges of the base 25 of the slide 24. These studs 34 are arranged to plug into slots 35 provided on the underside 11 of the housing 3, in the extension of the longitudinal grooves 22. They can also be provided with hooks at their end to be locked in the active position.

Dans cette position de serrage, représentée sur la figure 2, l'écrou 31 se situe entre les ailes latérales 16 et 17 du mors fixe 4, juste au-dessous des retours 21 en forme de demi-queue-d'aronde. Les bordures latérales de l'écrou 31 comportent des butées 36 qui ont une forme correspondant à celle des retours 21 pour assurer un appui et un accrochage corrects lors du serrage, et notamment pour servir de moyen de crochetage et éviter l'écartement des ailes latérales du mors fixe au cours de cette opération.
Les faces latérales de l'écrou 31 sont bloquées entre les ailes 16 et 17 du mors fixe 4. La manoeuvre de la vis de serrage 27 entraîne le blocage des butées 36 sur les retours 21 et la descente du mors mobile 5. Ce dernier est guidé dans les rainures médianes 20 en forme d'arcs de cercle pour assurer un écrasement et une connexion correcte des extrémités de câbles 2, 2'. Cet écrasement réalise le mélange des fils électriques constitutifs ; le montage mobile de la pastille 5 à l'extrémité de la vis 27 améliore cette opération.In this tightening position, shown in FIG. 2, the nut 31 is located between the lateral wings 16 and 17 of the fixed jaw 4, just below the returns 21 in the form of a half-dovetail. The lateral edges of the nut 31 include stops 36 which have a shape corresponding to that of the returns 21 to ensure proper support and hooking during tightening, and in particular to serve as a hooking means and to avoid the spacing of the lateral wings of the fixed jaw during this operation.
The lateral faces of the nut 31 are blocked between the wings 16 and 17 of the fixed jaw 4. The operation of the clamping screw 27 causes the stops 36 to be blocked on the returns 21 and the mobile jaw 5 to descend. The latter is guided in the central grooves 20 in the form of arcs of a circle to ensure crushing and correct connection of the cable ends 2, 2 '. This crushing mixes the constituent electrical wires; the mobile mounting of the pad 5 at the end of the screw 27 improves this operation.

La présence d'une structure isolante autour de l'étau de connexion permet de sécuriser ce type de borne.
Dans le domaine des connexions électriques pour candélabres d'éclairage, les parois latérales 7 et 8 du boîtier 3 sont de préférence prolongées, sur la face inférieure 11 de ce dernier, par des joues monoblocs 38. Ces joues latérales s'étendent devant le mors fixe 4 et leur dimension est adaptée en fonction de l'environnement pour protéger l'accès aux extrémités de câbles et au mors fixe.The presence of an insulating structure around the connection vice makes it possible to secure this type of terminal.
In the field of electrical connections for lighting candelabras, the side walls 7 and 8 of the housing 3 are preferably extended, on the underside 11 of the latter, by monobloc cheeks 38. These side cheeks extend in front of the jaw fixed 4 and their size is adapted according to the environment to protect access to the cable ends and to the fixed jaw.

Telle qu'on l'a représentée sur les figures 1 et 4, la borne 1, selon l'invention, comporte des moyens de réception d'une fiche de dérivation 39 servant à alimenter un coupe-circuit non représenté. Ces moyens consistent en une prise femelle 40 définie par un orifice réalisé dans l'écrou en laiton 31 et dans l'une des joues 29 qui le maintient. Cette fiche 39 et son fil d'alimentation passent par une ouverture appropriée réalisée dans la face supérieure 12 du boîtier isolant 3.As shown in Figures 1 and 4, terminal 1, according to the invention, comprises means for receiving a bypass plug 39 for supplying a circuit breaker not shown. These means consist of a female socket 40 defined by an orifice made in the brass nut 31 and in one of the cheeks 29 which holds it. This plug 39 and its supply wire pass through an appropriate opening made in the upper face 12 of the insulating housing 3.

Plusieurs bornes de connexion 1 du même type peuvent être reliées. A cet effet, la borne 1 comporte des moyens de fixation d'une barrette de liaison 41 qui est isolée entre ses extrémités. Ces moyens sont constitués d'une fente 42, prévue dans la face supérieure 12 du boîtier 3 et de deux orifices communiquant 43 et 44 prévus respectivement dans le fond 18 du mors fixe 4 et dans la paroi arrière 10 dudit boîtier. La barrette 41 comporte, à chacune de ses extrémités, une fiche plate 45 dans laquelle est aménagé un orifice 46. Une fois placé sur le fond 18 du mors fixe 4, l'ensemble peut être assemblé au moyen d'une vis de fixation 47. A noter que la fente 42 peut être obturée par une pastille mince prédécoupée que l'opérateur peut ouvrir en fonction des besoins.Several connection terminals 1 of the same type can be connected. To this end, the terminal 1 comprises means for fixing a connecting bar 41 which is insulated between its ends. These means consist of a slot 42, provided in the upper face 12 of the housing 3 and two communicating orifices 43 and 44 provided respectively in the bottom 18 of the fixed jaw 4 and in the rear wall 10 of said housing. The bar 41 has, at each of its ends, a flat plug 45 in which is an orifice 46. Once placed on the bottom 18 of the fixed jaw 4, the assembly can be assembled by means of a fixing screw 47 Note that the slot 42 can be closed by a thin precut pad which the operator can open as required.

Cette barrette 41 peut consister en un simple fil isolé entre ses deux extrémités, comme représenté figure 1, ou être en forme de peigne afin de connecter directement plusieurs boîtiers.This bar 41 may consist of a single insulated wire between its two ends, as shown in the figure 1, or be in the form of a comb in order to directly connect several boxes.

La borne de connexion électrique selon l'invention peut également comporter une rainure d'accueil 48 en forme de queue-d'aronde, associée à un orifice central 49, pour permettre le positionnement sur un rail de fixation non représenté.The electrical connection terminal according to the invention may also include a reception groove 48 in the form of a dovetail, associated with a central orifice 49, to allow positioning on a fixing rail not shown.

La borne de connexion électrique décrite ci-avant est particulièrement adaptée aux connexions de câbles d'alimentation de candélabres. Bien entendu, elle peut être utilisée dans d'autres domaines et sa structure sera alors adaptée en conséquence.The electrical connection terminal described above is particularly suitable for the connection of candelabra power cables. Of course, it can be used in other fields and its structure will then be adapted accordingly.

Les signes de référence insérés après les caractéristiques techniques mentionnées dans les revendications ont pour seul but de faciliter la compréhension de ces dernières et n'en limitent aucunement la portée.The reference signs inserted after the technical characteristics mentioned in the claims are intended only to facilitate the understanding of the latter and in no way limit their scope.

Claims (11)

  1. An electric connection terminal comprising a fixed jaw (4) in the form of a U-shaped cradle serving as a receptacle for the ends of cables (2, 2') which have been made bare in advance and - a mobile jaw (5) associated with a clamping system (6) of the screw (27) - nut (31) type positioned in the aperture (15) of the said cradle (4), between its lateral branches (16, 17), whereby the said nut (31) works together with the ends of the said lateral branches (16, 17) by a system of the dovetail kind, to bear on the said ends in order to strengthen the clamping effect and to avoid their widening, whereas the connection terminal exhibits means enabling to displace the mobile jaw (5) and its clamping system (6) in order to adopt an inactive position clearing the aperture (15) of the cradle (4) and enabling to introduce and to place ends of cables (2, 2') and to adopt an active position in which the said ends of cables (2, 2') can be clamped, characterised in that it is made of an insulating support in the shape of a casing (3) in which is positioned the fixed jaw (4), whereas the said casing (3) is fitted with a slide system (22) for the guiding of a ram (24) carrying the mobile jaw (5) and its clamping system (6), whereby the said slide is closed at its ends so that the slide (22)/ram (24) assembly builds means suited for maintaining the said mobile jaw (5) linked to the connection terminal, regardless whether it is in home position or in clamping position, so that it remains captive.
  2. An electric connection terminal according to claim 1, characterised in that it comprises an insulating casing (3) with more or less the form of a parallelepipedon, constituted of two assembled half-shells.
  3. An electric connection terminal according to one of the claims 1 or 2, characterised in that it contains a fixed jaw (4) housed inside the open face (11) of the casing (3) opposite the cables (2, 2') to be connected.
  4. An electric connection terminal according to claim 3, characterised in that the insulating casing (3) exhibits lateral cheeks (38) prolonging its open face (11) at the level of which is accommodated the fixed jaw (4), in order to protect the access at the ends of the cables (2, 2') and to the said fixed jaw (4).
  5. An electric connection terminal according to any of the claims 1 to 4, characterised in that the ram (24) is made of a flat skid (25) fitted with a hole (26) for passing the clamping screw (27), whereas the said skid (25) is prolonged, on one side, by a cowling (28) for protecting the upper end of the said screw (27) and, on the other side, by two lateral cheeks (29) on which is fastened the nut (31), by a snapping effect.
  6. An electric connection terminal according to claim 5, characterised in that the lateral edges of the skid (25) of the ram (24) are guided in longitudinal grooves (22) forming slides stretching parallel to the longitudinal axis (23) of the cables (2, 2') and which are located at the level of the front face (9) of the casing (3).
  7. An electric connection terminal according to claim 6, characterised in that the skid (25) of the ram (24) is fitted with lateral lugs (34) located to penetrate in ports (35) arranged in the prolongation of the longitudinal grooves (22) of the casing (3), whereas the said lugs (34) and ports (35) enable to lock the ram (24) onto the aperture (15) of the fixed jaw (4), in the clamping position for the cables (2, 2').
  8. An electric connection terminal according to one of the claims 6 or 7, characterised in that the longitudinal grooves (22) which serve as slides for the ram (24) are suited to clamp and squeeze the ram with a slight strength, when extracting from the fixed jaw (4).
  9. An electric connection terminal according to any of the claims 1 to 8, characterised in that the mobile jaw (5) consists of a conducting pellet, mobile- mounted at the end of the clamping screw (27), whereas the said pellet (5) is guided in the fixed jaw (4) by middle grooves (20) arranged on the internal faces of its lateral branches (16 and 17).
  10. An electric connection terminal according to any of the claims 1 to 9, characterised in that the nut (31) of the clamping system (6) comprises a hole (40) designed for accommodating a branch circuit plug (39).
  11. An electric connection terminal according to any of the claims 1 to 10, characterised in that it contains means for fastening a terminal junction (41), insulated between its ends, whereby the said means are constituted of a slot (42) arranged on the upper face (12) of the casing (3) and of two communicating slots, the one (43) being drilled in the bottom (18) of the fixed jaw (4) and the other (44) in the rear wall (10) of the said casing (3), for passing a fastening screw (47).
EP93401775A 1992-07-08 1993-07-07 Electric connection terminal Expired - Lifetime EP0578576B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9208677 1992-07-08
FR9208677A FR2693598B1 (en) 1992-07-08 1992-07-08 Electrical connection terminal.

Publications (2)

Publication Number Publication Date
EP0578576A1 EP0578576A1 (en) 1994-01-12
EP0578576B1 true EP0578576B1 (en) 1997-06-04

Family

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Application Number Title Priority Date Filing Date
EP93401775A Expired - Lifetime EP0578576B1 (en) 1992-07-08 1993-07-07 Electric connection terminal

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EP (1) EP0578576B1 (en)
AT (1) ATE154170T1 (en)
DE (1) DE69311216T2 (en)
ES (1) ES2104096T3 (en)
FR (1) FR2693598B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4414148C2 (en) * 1994-04-22 1996-04-04 Hoelscher Heinrich Busbar and cross connector for a terminal block
DE19758465C2 (en) * 1997-03-12 2001-11-29 Langmatz Lic Gmbh Electric sliding clamp
DE29708444U1 (en) * 1997-05-12 1997-07-10 Jordan Paul Eltech Sliding clamp
FR2763430A1 (en) * 1997-05-16 1998-11-20 Bruno Paul Claude Marcoz Electrical connection block for rigid cables
FR2786611B1 (en) * 1998-11-26 2001-02-09 Jean Jacques Lefebvre CONNECTION TERMINAL FOR THE LOOP SUPPLY OF ELECTRICAL APPLIANCES
FR2920920B1 (en) * 2007-09-07 2009-11-06 Seifel Sa ELECTRICAL CONNECTION DEVICE
FR2963706B1 (en) * 2010-08-03 2014-10-17 Michaud Sa ELECTRICAL CONNECTION TERMINAL
DE102011001577A1 (en) * 2011-03-25 2012-09-27 Tyco Electronics Raychem Gmbh Clamping device for connecting in a longitudinal direction extending electrical conductors, in particular for gel joints, and a tool for this purpose
DE102011056659B4 (en) * 2011-12-20 2023-03-16 Phoenix Contact Gmbh & Co. Kg Screw terminal connection device
FR3063530B1 (en) * 2017-03-03 2021-06-11 Seifel SELF-BREAKING SCREW
CN106911054B (en) * 2017-04-01 2024-03-19 菲尼克斯亚太电气（南京）有限公司 External switch screw switching assembly
DE102018129948A1 (en) * 2018-11-27 2020-05-28 Phoenix Contact Gmbh & Co. Kg Spring clamp for connecting conductors

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FR2136396A6 (en) * 1972-04-10 1972-12-22 Sadtem
FR2312129A1 (en) * 1975-05-22 1976-12-17 Wechsler Bernard Power distribution conductor and connection - has basic busbar and side fitting power take off connections
US4640571A (en) * 1985-01-14 1987-02-03 Walter Electrical Manufacturing Company Electrical connector blocks

Also Published As

Publication number Publication date
ATE154170T1 (en) 1997-06-15
DE69311216T2 (en) 1998-01-22
EP0578576A1 (en) 1994-01-12
FR2693598A1 (en) 1994-01-14
DE69311216D1 (en) 1997-07-10
FR2693598B1 (en) 1994-10-07
ES2104096T3 (en) 1997-10-01

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