EP0521803B1 - Electrical connection and supply device - Google Patents

Electrical connection and supply device Download PDF

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Publication number
EP0521803B1
EP0521803B1 EP19920420221 EP92420221A EP0521803B1 EP 0521803 B1 EP0521803 B1 EP 0521803B1 EP 19920420221 EP19920420221 EP 19920420221 EP 92420221 A EP92420221 A EP 92420221A EP 0521803 B1 EP0521803 B1 EP 0521803B1
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EP
European Patent Office
Prior art keywords
bush
shaft
head
elements
locking
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
Application number
EP19920420221
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German (de)
French (fr)
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EP0521803A1 (en
Inventor
Yves-Marie Maréchal
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.)
Tresse Metallique J Forissier SA
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Tresse Metallique J Forissier SA
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Publication of EP0521803A1 publication Critical patent/EP0521803A1/en
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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
    • H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
    • 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
    • H01R4/302—Clamped connections, spring connections utilising a screw or nut clamping member having means for preventing loosening of screw or nut, e.g. vibration-proof connection
    • 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
    • H01R4/305—Clamped connections, spring connections utilising a screw or nut clamping member having means for facilitating engagement of conductive member or for holding it in position

Definitions

  • the present invention relates to a system allowing the mechanical and electrical connection of conductive bars therebetween, and more particularly the connection of flexible elements with the current supply bars, devices widely used in electrical cabinets.
  • the flexible elements are electrical conductors constituted by a stack of strips of copper, tinned aluminum or other conductive materials, isolated by the peripheral extrusion of an envelope of suitable materials, and generally having a rectangular section.
  • junctions There are currently two types of junction, one which consists of drilling or punching the elements to be connected and tightening them by means of bolts, the other which consists of superimposing the elements to be connected and enclosing them between two connected plates by four bolts.
  • the second although simpler to implement, has the major drawback of not guaranteeing perfect pressure distribution over the contacting surfaces, since it is practically impossible to maintain the perfect parallelism of the plates in progress and therefore deformation.
  • a device has been designed and developed to ensure the connection between two electrical conductors, at least one of which is in the form of a rigid bar and the other in the form a rigid bar or a flexible feeding element composed of stacked strips, comprising two chambers or grooves intended to each receive one of the elements to be connected, as well as locking means screwed inside a wall, comprising each chamber or groove, said means cooperating in abutment, against the surface of each element to be connected.
  • connection device also makes it possible to set up a protective cover or other accessory, without having to use additional fastening elements.
  • the invention therefore relates to a device, designated by the general reference (1) in this FIG. 1, and which makes it possible to make the connection between a busbar ( 2) and a conductive element (3) intended to supply power to any device (4) disposed at a distance D from the supply bar (2).
  • the conductive element (3) is a flexible element constituted by a stack of strips arranged inside an insulating sheath, this element having a rectangular section.
  • the device (1) is in the form of a block made of copper or an alloy copper, said blocks comprising two grooves or chambers, and which are intended to receive each of the elements (2,3) to be connected.
  • the block (1) has a section having the shape of an H, the chambers (5,6) having a height corresponding substantially to the width of the elements (2,3) to be connected. Means, designated by the general reference (7), ensure the locking of the elements (2,3) to be connected inside said chambers (5,6).
  • the locking elements (7) are in the form of terminals or sockets (8) which can be screwed inside one.
  • wall (9) defining each chamber or groove (5,6), the other wall (10) being full and serving as a bearing surface for one of the faces of the elements to be connected (2,3).
  • the terminals or sockets (8) bear against the other surface of each element to be connected (2,3), and therefore ensure the immobilization of said elements inside the connection block (1).
  • each blocking element or socket (7) has a structure such that it comprises means making it possible to control the blocking pressure and to prohibit further tightening when a predetermined limit value has been reached.
  • FIGS 3 to 5 illustrate an embodiment for performing such functions.
  • each locking element (8) consists essentially of the sleeve itself of cylindrical shape and which has a peripheral thread (11).
  • This socket (8) can be screwed inside an orifice (12) provided in the wall (9) of the positioning and connecting block of the elements to be joined.
  • the bearing surface (13) against the element to be immobilized is constituted by a head (14) having in this case a hexagonal shape.
  • This head (14) is arranged inside an open chamber (15) of corresponding shape, and is axially displaceable inside the socket.
  • the rear face (16) is subjected to the action of means making it possible to exert a predetermined pressure, means represented in the form of a spring (17) in FIG.
  • the head (14) is held inside the socket by means of a pin or clamping element (18) which projects outside the socket and the end (19) of which makes it possible to carry out the tightening operation.
  • the axis (18) ensuring the maintenance of the support head (14) inside the socket is constituted by a threaded rod, having a pitch opposite to that of the socket (8).
  • the sleeve (8) Being in the stop position, if the screwing action is continued by means of the element (18,19), the sleeve (8) will always be driven until reaching a predetermined clamping force corresponding to the pre- stress given to the washers (17a) (17b).
  • the drive always in the direction of screwing of the element (18,19), will have no effect on the displacement of the sleeve and therefore on the bearing surface (13), taking into account the reverse steps between the axis (18 ) and said sleeve (8), the clamping element (19) having a tendency to unscrew.
  • the element (18,19) can be completely removed and replaced by a protective cover or other accessories.
  • connection block according to the invention could, for example, be used to connect two conductive elements end to end.

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)

Description

La présente invention concerne un système permettant le raccordement mécanique et électrique de barres conductrices entre elles, et plus particulièrement le raccordement d'éléments souples avec les barres d'amenée de courant, dispositifs largement employés dans les armoires électriques.The present invention relates to a system allowing the mechanical and electrical connection of conductive bars therebetween, and more particularly the connection of flexible elements with the current supply bars, devices widely used in electrical cabinets.

Les éléments souples sont des conducteurs électriques constitués par un empilement de feuillards de cuivre, d'aluminium étamé ou autres matériaux conducteurs, isolés par l'extrusion périphérique d'une enveloppe en matériaux appropriés, et ayant en général une section rectangulaire.The flexible elements are electrical conductors constituted by a stack of strips of copper, tinned aluminum or other conductive materials, isolated by the peripheral extrusion of an envelope of suitable materials, and generally having a rectangular section.

A ce jour, de nombreux problèmes se posent par suite de la mise en oeuvre du raccordement et des deffectuosités qu'elle entraîne.To date, many problems arise as a result of the implementation of the connection and the faults it causes.

Il existe actuellement deux types de jonction, l'une qui consiste à percer ou à poinçonner les éléments à raccorder et à les serrer au moyen de boulons, l'autre qui consiste à superposer les éléments à raccorder et à les enserrer entre deux plaques reliées par quatre boulons.There are currently two types of junction, one which consists of drilling or punching the elements to be connected and tightening them by means of bolts, the other which consists of superimposing the elements to be connected and enclosing them between two connected plates by four bolts.

Ces deux solutions sont inadéquates quant à la qualité de la connexion.These two solutions are inadequate with regard to the quality of the connection.

La première nécessite l'emploi d'outillages et matériels spéciaux et nombreux pour percer ou poinçonner les trous. De plus, cette méthode détériore les feuillards, provoque des déformations et des bavures. Elle est longue et coûteuse, et toute erreur de mise en oeuvre entraîne la perte de l'élément souple et son remplacement. Enfin, pour l'obtention d'une bonne connexion électrique, il est impératif d'utiliser sous les têtes de boulons des rondelles élastiques de compensation de dilatation, et d'effectuer le serrage au moyen de clés dynamométriques en bon état et réglées en fonction des couples de serrage préconisés, d'un emploi délicat voire impossible compte tenu de l'encombrement de ces clés.The first requires the use of numerous special tools and materials to drill or punch the holes. In addition, this method deteriorates the strips, causing deformations and burrs. She is long and costly, and any error in implementation results in the loss of the flexible element and its replacement. Finally, to obtain a good electrical connection, it is imperative to use elastic expansion compensation washers under the bolt heads, and to tighten using torque wrenches in good condition and adjusted accordingly recommended tightening torques, delicate or even impossible to use given the size of these keys.

On constate également que la pression exercée par la boulonnerie, répartie uniquement sous les rondelles peut être supérieure à la contrainte acceptée par l'élément, provoquant des enfoncements et des déformations rendant défectueuse la connexion et nécessitant, pour y remédier, l'emploi de plaques de répartition en acier.It is also noted that the pressure exerted by the bolts, distributed only under the washers can be greater than the stress accepted by the element, causing indentations and deformations making the connection defective and requiring, to remedy it, the use of plates distribution steel.

La seconde, bien que plus simple de mise en oeuvre, présente l'inconvénient majeur de ne pas garantir une parfaite répartition de la pression sur les surfaces en contact, étant donné qu'il est pratiquement impossible de maintenir le parfait parallélisme des plaques en cours et par conséquent de déformation.The second, although simpler to implement, has the major drawback of not guaranteeing perfect pressure distribution over the contacting surfaces, since it is practically impossible to maintain the perfect parallelism of the plates in progress and therefore deformation.

Elle exige en outre les mêmes précautions que la première pour ce qui concerne le dispositif élastique et l'emploi de clés dynamométriques, ce qui n'est pas prévu dans le conditionnement de livraison des plaques.It also requires the same precautions as the first for the elastic device and the use of torque wrenches, which is not provided in the delivery packaging of the plates.

On connaît également, par le brevet FR-A-2.634.327, un dispositif de jonction électrique à angle de serrage et effort de blocage prédéterminés et à grande sécurité d'actionnement. Dans ce brevet, le blocage et le déblocage d'un conducteur dans l'élément de jonction, sont réalisés, au moyen de notices spéciales, actionnant un système à vis, qui comprend un dispositif de ressort axial, coopérant avec l'élément de blocage. Il en résulte que l'effort de blocage du conducteur est constant et prédéterminé indépendamment des tolérances du conducteur. Ce dispositif ne peut être manoeuvré qu'avec l'outil spécial précité. En outre, l'introduction et/ou l'extraction du conducteur, n'est possible que lorsque l'outil spécial est dans une position angulaire prédéterminée. Il en résulte une conception relativement complexe.Also known, from patent FR-A-2,634,327, is an electrical junction device with predetermined clamping angle and locking force and with high actuation safety. In this patent, the blocking and unblocking of a conductor in the junction element is carried out, by means of special instructions, actuating a screw system, which comprises an axial spring device, cooperating with the blocking element . As a result, the driver's locking force is constant and predetermined regardless of the driver's tolerances. This device can only be operated with the aforementioned special tool. In addition, the introduction and / or extraction of the conductor is only possible when the special tool is in a predetermined angular position. The result is a relatively complex design.

Or, on a trouvé, et c'est ce qui fait l'objet de la présente invention, un dispositif de conception simple, qui permet de réaliser la connexion entre deux conducteurs électriques, l'un se présentant sous la forme d'une barre rigide, l'autre pouvant être aussi bien une barre rigide qu'un élément d'alimentation souple composé de feuillards empilés, qui permet de résoudre l'ensemble de ces problèmes et qui non seulement simplifie l'opération de connexion, mais par ailleurs et surtout assure un contact électrique parfait entre les deux conducteurs ainsi raccordés.However, we have found, and this is what is the subject of the present invention, a device of simple design, which makes it possible to make the connection between two electrical conductors, one being in the form of a bar rigid, the other being either a rigid bar or a flexible supply element composed of stacked strips, which makes it possible to solve all of these problems and which not only simplifies the connection operation, but also and above all ensures perfect electrical contact between the two conductors thus connected.

Pour résoudre ce problème, il a été conçu et mis au point un dispositif de ceux permettant d'assurer la connexion entre deux conducteurs électriques dont l'un au moins se présente sous la forme d'une barre rigide et l'autre sous la forme d'une barre rigide ou d'un élément d'alimentation souple composé de feuillards empilés, comportant deux chambres ou gorges destinées à recevoir chacune l'un des éléments à raccorder, ainsi que des moyens de blocage vissés à l'intérieur d'une parois, comportant chaque chambre ou gorge, lesdits moyens coopérant en appui, contre la surface de chaque élément à raccorder.To solve this problem, a device has been designed and developed to ensure the connection between two electrical conductors, at least one of which is in the form of a rigid bar and the other in the form a rigid bar or a flexible feeding element composed of stacked strips, comprising two chambers or grooves intended to each receive one of the elements to be connected, as well as locking means screwed inside a wall, comprising each chamber or groove, said means cooperating in abutment, against the surface of each element to be connected.

Selon l'invention, ledit dispositif est caractérisé en ce que :

  • chaque élément de blocage est constitué essentiellement par une douille proprement dite de forme cylindrique comportant un filetage périphérique et pouvant être vissée à l'intérieur d'un orifice correspondant prévu sur l'une des parois du bloc de positionnement des éléments à réunir ;
  • la surface d'appui contre l'élément à immobiliser est constituée par une tête disposée à l'intérieur d'une chambre ouverte, tête déplaçable axialement à l'intérieur de la douille et dont la face arrière est soumise à l'action d'un moyen permettant d'exercer une pression prédéterminée, cette tête étant maintenue à l'intérieur de la douille par l'intermédiaire d'un axe ou élément de serrage, débordant sur la surface extérieure et servant d'élément permettant de réaliser l'opération de blocage ;
  • l'axe qu'assure le maintien de la surface d'appui à l'intérieur de la douille est constitué par une tige filetée, de pas inverse à celui de la douille, ce qui permet, lorsque la force de serrage est atteinte, de dévisser l'axe ou élément de serrage proprement dit.
According to the invention, said device is characterized in that:
  • each blocking element consists essentially of a socket proper of cylindrical shape comprising a peripheral thread and which can be screwed inside a corresponding orifice provided on one of the walls of the block for positioning the elements to be joined;
  • the bearing surface against the element to be immobilized is constituted by a head arranged inside an open chamber, head movable axially inside the socket and the rear face of which is subjected to the action of means for exerting a predetermined pressure, this head being held inside the sleeve by means of a pin or clamping element, projecting over the external surface and serving as an element allowing the operation to be carried out blocking;
  • the axis ensured by the maintenance of the bearing surface inside the sleeve is constituted by a threaded rod, with a pitch opposite to that of the sleeve, which allows, when the tightening force is reached, to unscrew the axle or clamping element itself.

Par ailleurs, selon une forme préférentielle de réalisation conforme à l'invention, le dispositif de connexion permet également de mettre en place un capot protecteur ou autre accessoire, et ce sans avoir à utiliser des éléments de fixation additionnels.Furthermore, according to a preferred embodiment in accordance with the invention, the connection device also makes it possible to set up a protective cover or other accessory, without having to use additional fastening elements.

L'invention et les avantages qu'elle apporte seront cependant mieux compris grâce à l'exemple de réalisation donné ci-après à titre indicatif qui est illustré par les schémas annexés dans lesquels :

  • la figure 1 est une vue d'ensemble, schématique, en perspective, montrant comment est réalisée, grâce au dispositif conforme à l'invention, la liaison entre une barre conductrice et le cordon de raccordement à une installation prédéterminée ;
  • la figure 2 est une vue schématique, en perspective éclatée, montrant plus en détail l'ensemble de la structure d'un dispositif conforme à l'invention, un seul élément de serrage étant représenté sur cette figure ;
  • la figure 3 est une vue en perspective, partiellement en coupe et éclatée, montrant la structure d'un élément de blocage que comporte un dispositif conforme à l'invention ;
  • la figure 4 est une vue en élévation en coupe du mode de réalisation préférentiel illustré à la figure 3 et ;
  • la figure 5 est une vue selon le plan B de la figure 4 montrant plus en détail la surface active que comporte un élément de blocage entrant dans la réalisation d'un dispositif conforme à l'invention.
The invention and the advantages which it brings will however be better understood thanks to the example of embodiment given below for information which is illustrated by the appended diagrams in which:
  • Figure 1 is an overview, schematic, in perspective, showing how is carried out, using the device according to the invention, the connection between a conductive bar and the connection cord to a predetermined installation;
  • Figure 2 is a schematic view, in exploded perspective, showing in more detail the entire structure of a device according to the invention, a single clamping element being shown in this figure;
  • Figure 3 is a perspective view, partially in section and exploded, showing the structure of a locking element that comprises a device according to the invention;
  • Figure 4 is a sectional elevation view of the preferred embodiment illustrated in Figure 3 and;
  • Figure 5 is a view along plane B of Figure 4 showing in more detail the active surface that comprises a locking element used in the production of a device according to the invention.

Si l'on se reporte aux schémas annexés, et notamment à la figure 1, l'invention concerne donc un dispositif, désigné par la référence générale (1) à cette figure 1, et qui permet de réaliser la connexion entre une barre conductrice (2) et un élément conducteur (3) destiné à assurer l'alimentation d'un appareillage quelconque (4) disposé à une distance D de la barre d'alimentation (2). Dans la forme de réalisation illustrée, l'élément conducteur (3) est un élément souple constitué par un empilement de feuillards disposés à l'intérieur d'une gaine isolante, cet élément ayant une section rectangulaire.If reference is made to the appended diagrams, and in particular to FIG. 1, the invention therefore relates to a device, designated by the general reference (1) in this FIG. 1, and which makes it possible to make the connection between a busbar ( 2) and a conductive element (3) intended to supply power to any device (4) disposed at a distance D from the supply bar (2). In the illustrated embodiment, the conductive element (3) is a flexible element constituted by a stack of strips arranged inside an insulating sheath, this element having a rectangular section.

Pour réaliser l'opération de connexion, le dispositif (1) conforme à l'invention dont une forme de réalisation préférentielle ressort des vues de détail (figures 2 à 5), se présente sous la forme d'un bloc réalisé en cuivre ou alliage cuivreux, lesdits blocs comportant deux gorges ou chambres, et qui sont destinés à recevoir chacun des éléments (2,3) à raccorder. Dans le cas présent, le bloc (1) a une section ayant la forme d'un H, les chambres (5,6) ayant une hauteur correspondant sensiblement à la largeur des éléments (2,3) à raccorder. Des moyens, désignés par la référence générale (7), permettent d'assurer le blocage des éléments (2,3) à raccorder à l'intérieur desdites chambres (5,6).To carry out the connection operation, the device (1) according to the invention, a preferred embodiment of which emerges from the detailed views (FIGS. 2 to 5), is in the form of a block made of copper or an alloy copper, said blocks comprising two grooves or chambers, and which are intended to receive each of the elements (2,3) to be connected. In the present case, the block (1) has a section having the shape of an H, the chambers (5,6) having a height corresponding substantially to the width of the elements (2,3) to be connected. Means, designated by the general reference (7), ensure the locking of the elements (2,3) to be connected inside said chambers (5,6).

Conformément à l'invention, les éléments de blocage (7) (un seul étant représenté à la figure 2), se présentent sous la forme de bornes ou douilles (8) qui peuvent être vissées à l'intérieur d'une. paroi (9) définissant chaque chambre ou gorge (5,6), l'autre paroi (10) étant quant à elle pleine et servant de surface d'appui à l'une des faces des éléments à raccorder (2,3). Les bornes ou douilles (8) viennent s'appuyer contre l'autre surface de chaque élément à raccorder (2,3), et assurent donc l'immobilisation desdits éléments à l'intérieur du bloc de liaison (1).According to the invention, the locking elements (7) (only one being shown in Figure 2), are in the form of terminals or sockets (8) which can be screwed inside one. wall (9) defining each chamber or groove (5,6), the other wall (10) being full and serving as a bearing surface for one of the faces of the elements to be connected (2,3). The terminals or sockets (8) bear against the other surface of each element to be connected (2,3), and therefore ensure the immobilization of said elements inside the connection block (1).

Conformément à l'invention, chaque élément de blocage ou douille (7) a une structure telle qu'il comporte des moyens permettant de contrôler la pression de blocage et d'interdire de poursuivre le serrage lorsqu'une valeur limite prédéterminée a été atteinte.According to the invention, each blocking element or socket (7) has a structure such that it comprises means making it possible to control the blocking pressure and to prohibit further tightening when a predetermined limit value has been reached.

Les figures 3 à 5 illustrent un mode de réalisation permettant de remplir de telles fonctions.Figures 3 to 5 illustrate an embodiment for performing such functions.

Si l'on se reporte à ces figures, chaque élément de blocage (8) est constitué essentiellement par la douille proprement dite de forme cylindrique et qui comporte un filetage périphérique (11). Cette douille (8) peut être vissée à l'intérieur d'un orifice (12) prévu dans la paroi (9) du bloc de positionnement et de liaison des éléments à réunir. La surface d'appui (13) contre l'élément à immobiliser est constituée par une tête (14) ayant dans le cas présent une forme hexagonale. Cette tête (14) est disposée à l'intérieur d'une chambre ouverte (15) de forme correspondante, et est déplaçable axialement à l'intérieur de la douille. La face arrière (16) est soumise à l'action de moyens permettant d'exercer une pression prédéterminée, moyens représentés sous la forme d'un ressort (17) à la figure 3, mais qui de préférence sont constitués par des rondelles précontraintes (17a,17b) telles que représentées à la figure 4. La tête (14) est maintenue à l'intérieur de la douille par l'intermédiaire d'un axe ou élément de serrage (18) qui déborde à l'extérieur de la douille et dont l'extrémité (19) permet de réaliser l'opération de serrage. Dans la forme de réalisation préférentielle illustrée, l'axe (18) assurant le maintien de la tête d'appui (14) à l'intérieur de la douille, est constitué par une tige filetée, ayant un pas inverse à celui de la douille (8).If we refer to these figures, each locking element (8) consists essentially of the sleeve itself of cylindrical shape and which has a peripheral thread (11). This socket (8) can be screwed inside an orifice (12) provided in the wall (9) of the positioning and connecting block of the elements to be joined. The bearing surface (13) against the element to be immobilized is constituted by a head (14) having in this case a hexagonal shape. This head (14) is arranged inside an open chamber (15) of corresponding shape, and is axially displaceable inside the socket. The rear face (16) is subjected to the action of means making it possible to exert a predetermined pressure, means represented in the form of a spring (17) in FIG. 3, but which preferably consist of prestressed washers ( 17a, 17b) as shown in FIG. 4. The head (14) is held inside the socket by means of a pin or clamping element (18) which projects outside the socket and the end (19) of which makes it possible to carry out the tightening operation. In the preferred embodiment illustrated, the axis (18) ensuring the maintenance of the support head (14) inside the socket, is constituted by a threaded rod, having a pitch opposite to that of the socket (8).

Compte-tenu de la force exercée par les rondelles précontraintes (17a) (17b), il y a une solidarisation temporaire entre la douille (8) et l'élément de serrage (18,19). Il apparait donc, lorsque l'on agit sur l'élément (18,19), dans le sens normal correspondant à une action de vissage (mouvement d'entraînement dans le sens des aiguilles d'une montre), le vissage concomitant de la douille (8) jusqu'à ce que la surface d'appui (13) vienne en butée sur l'élément (3) à raccorder.Given the force exerted by the prestressed washers (17a) (17b), there is a temporary connection between the sleeve (8) and the clamping element (18,19). It therefore appears, when one acts on the element (18,19), in the normal direction corresponding to a screwing action (driving movement in the clockwise direction), the concomitant screwing of the bush (8) until the bearing surface (13) abuts on the element (3) to be connected.

Etant en position de butée, si l'on continue l'action de vissage au moyen de l'élément (18,19), la douille (8) sera toujours entraînée jusqu'à atteindre un effort de serrage prédéterminé correspondant à la pré-contrainte donnée aux rondelles (17a) (17b). Par contre, une fois atteint l'effort de serrage prédéterminé, l'entraînement, toujours dans le sens de vissage de l'élément (18,19), sera sans incidence, sur le déplacement de la douille et par conséquent sur la surface d'appui (13), compte tenu des pas inverses entre l'axe (18) et ladite douille (8), l'élément de serrage (19) ayant tendance à se dévisser.Being in the stop position, if the screwing action is continued by means of the element (18,19), the sleeve (8) will always be driven until reaching a predetermined clamping force corresponding to the pre- stress given to the washers (17a) (17b). On the other hand, once the predetermined tightening force is reached, the drive, always in the direction of screwing of the element (18,19), will have no effect on the displacement of the sleeve and therefore on the bearing surface (13), taking into account the reverse steps between the axis (18 ) and said sleeve (8), the clamping element (19) having a tendency to unscrew.

A noter qu'après avoir serré la douille dans les conditions indiquées et atteint l'effort prédéterminé de serrage, l'élément (18,19) peut être totalement enlevé et remplacé par un capot protecteur ou autres accessoires.Note that after having tightened the sleeve under the conditions indicated and reached the predetermined tightening force, the element (18,19) can be completely removed and replaced by a protective cover or other accessories.

Pour le desserrage du dispositif, il suffit d'agir en sens inverse sur l'élément (19), ce qui aura pour effet d'assurer de manière concomitante, le dévissage de la douille (8) et par conséquent annuler l'effort de pression.For the loosening of the device, it suffices to act in the opposite direction on the element (19), which will have the effect of ensuring, concomitantly, the unscrewing of the sleeve (8) and consequently canceling the effort of pressure.

Un tel ensemble de conception particulièrement simple présente de très nombreux avantages parmi lesquels on peut citer :

  • une mise en place aisée et une opération de blocage simplifiée par le fait qu'elle ne nécessite que l'utilisation d'un seul et même outil ;
  • une pression de blocage constante et prédéterminée permettant d'assurer un très bon contact électrique ;
  • la possibilité d'utiliser le bloc de raccordement comme élément support d'accessoires additionnels tel que capot protecteur.
Such a particularly simple design assembly has numerous advantages, among which we can cite:
  • easy installation and a blocking operation simplified by the fact that it requires only the use of a single tool;
  • a constant and predetermined blocking pressure ensuring very good electrical contact;
  • the possibility of using the connection block as a support element for additional accessories such as a protective cover.

Bien entendu, l'invention n'est pas limitée à l'exemple de réalisation décrit précédemment, mais elle en couvre également toutes les variantes qui ne sortent pas du cadre de l'invention telle que définie dans les revendications. Ainsi, le bloc de liaison conforme à l'invention pourrait par exemple être utilisé pour raccorder bout à bout deux éléments conducteurs.Of course, the invention is not limited to the embodiment described above, but it also covers all the variants which do not depart from the scope of the invention as defined in the claims. Thus, the connection block according to the invention could, for example, be used to connect two conductive elements end to end.

Claims (2)

  1. Device (1) used to obtain a connection between two electrical conductors (2, 3) of which one (2) at least is in the form of a rigid bar and the other (3) in the form of a rigid bar or a flexible connecting component consisting of stacked strips having two chambers or grooves (5, 6) each intended to accommodate one of the elements (2, 3) to be joined as well as screw-fastened means of locking (7) inside a wall (9) each having a chamber or groove (5) (6), said means (7) pressing against the surface of each element (2, 3) to be joined, characterised in that:
    - Each locking element (7) essentially consists of an actual bush (8) of cylindrical shape threaded around its periphery (11) that can be screwed into a matching opening (12) in one of the walls (9) of the block for positioning the elements (2, 3) to be joined;
    - The bearing surface (13) against the element (2, 3) to be secured consists of a head (14) placed inside an open chamber (15), said head (14) being able to move axially inside the bush (8) of which the rear face (16) is subjected to the action of means (17) used to exert a predefined pressure, this head (14) being secured inside the bush (8) by means of a shaft or clamping element (18, 19) protruding beyond the outer surface and used as an element making it possible to carry out locking;
    - The shaft (18) that secures bearing surface (13) inside the bush (8) consists of a threaded rod of which the pitch is the reverse of that of the bush (8), thus making it possible, once the clamping force has been reached, to unscrew the shaft or the actual clamping element (18, 19).
  2. Device as claimed in claim 1 characterised in that after unscrewing the shaft or actual clamping element (18, 19), this element (18, 19) is used as a means of fixing various accessories, e.g. a protective cover outside the modular terminal block (1).
EP19920420221 1991-07-01 1992-06-30 Electrical connection and supply device Expired - Lifetime EP0521803B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9108506A FR2678778B1 (en) 1991-07-01 1991-07-01 CONNECTION AND ELECTRICAL SUPPLY DEVICE.
FR9108506 1991-07-01

Publications (2)

Publication Number Publication Date
EP0521803A1 EP0521803A1 (en) 1993-01-07
EP0521803B1 true EP0521803B1 (en) 1995-03-08

Family

ID=9414798

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Application Number Title Priority Date Filing Date
EP19920420221 Expired - Lifetime EP0521803B1 (en) 1991-07-01 1992-06-30 Electrical connection and supply device

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EP (1) EP0521803B1 (en)
DE (1) DE69201608T2 (en)
ES (1) ES2069981T3 (en)
FR (1) FR2678778B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102341963B (en) 2009-03-03 2015-02-25 Abb技术有限公司 Electric module with fastening device
CN103117461B (en) * 2013-01-15 2015-08-26 长园共创电力安全技术股份有限公司 Ground wire lock device
CN106522693B (en) * 2016-12-28 2020-04-07 长园共创电力安全技术股份有限公司 Buckle ground wire lock and device using same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2172448A5 (en) * 1972-02-11 1973-09-28 Alsthom Cgee
DE8500148U1 (en) * 1985-01-05 1985-04-04 OBO Bettermann oHG, 5750 Menden Device for equipotential bonding for earth conductors in electrical installations
FR2634327B1 (en) * 1988-07-12 1990-10-05 Lb Air ELECTRICAL JUNCTION DEVICE WITH PREDETERMINED ANGLE OF CLAMPING AND LOCKING EFFORT AND HIGH OPERATION SECURITY

Also Published As

Publication number Publication date
FR2678778A1 (en) 1993-01-08
DE69201608T2 (en) 1995-07-06
FR2678778B1 (en) 1995-06-30
DE69201608D1 (en) 1995-04-13
EP0521803A1 (en) 1993-01-07
ES2069981T3 (en) 1995-05-16

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