EP1353408B1 - Electrical bus bar - Google Patents

Electrical bus bar Download PDF

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Publication number
EP1353408B1
EP1353408B1 EP03354014A EP03354014A EP1353408B1 EP 1353408 B1 EP1353408 B1 EP 1353408B1 EP 03354014 A EP03354014 A EP 03354014A EP 03354014 A EP03354014 A EP 03354014A EP 1353408 B1 EP1353408 B1 EP 1353408B1
Authority
EP
European Patent Office
Prior art keywords
bar
connection
plane
collector
collector according
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
EP03354014A
Other languages
German (de)
French (fr)
Other versions
EP1353408A1 (en
Inventor
Louis Schneider Electric Industries SAS Linares
Gilbert Schneider Electric Industries SAS Velletaz
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.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
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Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP1353408A1 publication Critical patent/EP1353408A1/en
Application granted granted Critical
Publication of EP1353408B1 publication Critical patent/EP1353408B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • 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
    • H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting
    • H01R9/2675—Electrical interconnections between two blocks, e.g. by means of busbars
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4846—Busbar details
    • H01R4/485—Single busbar common to multiple springs
    • 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
    • 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
    • H01R9/2483—Terminal blocks specially adapted for ground 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
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
    • H01R4/4819—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end the spring shape allowing insertion of the conductor end when the spring is unbiased
    • H01R4/4821—Single-blade spring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/484—Spring housing details
    • H01R4/4842—Spring housing details the spring housing being provided with a single opening for insertion of a spring-activating tool
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4846—Busbar details

Definitions

  • the invention relates to an electrical collector intended in particular to be mounted in a cabinet or an electrical box and comprising a conductive bar comprising a flattened portion, at least one electrical connection member mounted on said bar and comprising at least one connection means, each these means being intended to allow the electrical connection of a cable or the like to said bar, the aforementioned connection operation being performed by means of a suitable tool, and a connection block adapted to such a collector.
  • a ground collector constituted by a brass bar having a monobloc connection block with said bar, said block comprising a number of screw type connection means.
  • connection points and the section of the cables to be connected are fixed, and the screw connection mode generates a relatively long connection time.
  • Another type of earth collector consists of a copper bar on which are fixed a multitude of small copper jumpers constituting screw terminals for connecting the cables. The disadvantages of this type of system are mainly because the assembly does not have sufficient mechanical strength to withstand the forces required for the connection of the cables, resulting in bending deformation of the bar.
  • connection points is fixed in a single direction perpendicular to the fixing plane of the bar; this system does not allow the connection of cables of different sections; the number of connection points is fixed; and the connection time of the cables is particularly long.
  • the present invention solves these problems and proposes an electrical collector of simple design, having a very good mechanical resistance to the forces necessary for the connection of the cables, great possibilities of adaptation with respect to the position of the cables, and with which the operation connection is facilitated.
  • the present invention also relates to a connection block intended in particular to constitute a constituent element of said collector.
  • the subject of the present invention is a collector of the kind previously mentioned, this collector being characterized in that the at least one or each connecting member is oriented relative to the plane of said bar so that the direction of the resultant forces exerted on the manifold by the aforementioned tool during the connection operation is substantially parallel to the plane of said bar.
  • This bar comprises a first part intended to receive the aforementioned connecting members and a second part comprising at least one fixing part of the bar in the aforementioned cabinet or cabinet, and the part (s) of attachment is ( are) located in a plane said plane of attachment, which plane is angularly offset from the plane containing the first part of the bar, said plane of the bar.
  • the block further comprises means for extracting the block from the bar, these means being arranged in such a way that the direction of the resultant of the forces exerted on the collector during the extraction operation is substantially parallel. to the plane of the bar.
  • these extraction means comprise at least one notch made in the said block (s), the said slot (s) being intended to cooperate with the tip of 'a screwdriver.
  • connection members comprise modules, said modules comprising, with respect to each other, a number of equal or different connection means and / or being adapted to equal or different cable sections.
  • an earth collector C intended to be placed in an electrical cabinet A, as illustrated on FIG. figure 7 , in order to allow the connection to earth of the different devices, in this case circuit breakers D, placed in this cabinet A.
  • This collector C is constituted on the figure 1 by a copper bar 1 on which are fixed a screw terminal 2 and four connection blocks 3, respectively three connection blocks 3a adapted to the connection of small section cables and a connection block 3b adapted to the connection of large section cables .
  • the terminal screw 2, made of folded sheet metal, is intended to establish between the copper bar 1 and earth equipotentiality, while the connection blocks 3 are intended to electrically connect cables from the apparatus to the barrel.
  • the bar 1 is composed of a first part, consisting of two fixing parts 4,5 located respectively at the two ends of the bar 1, and a second part 6, called intermediate, intended to receive the connection blocks 3.
  • the plane P containing the intermediate portion 6 forms, with the plane Q, fastening portions, or plane of attachment, an angle ⁇ ( fig.9 ) about 45 °, this angular offset having been made by twisting the bar 1.
  • Each connection block 3 comprises a number of connection means 7, these being of the fast connector type.
  • connection means 7 comprises a spring clip 8 ( fig.9 ) and two orifices 9, 10 for the one 9, to receive a cable 11, and the other 10, to allow the introduction of a screwdriver 12 to actuate the clamp 8 so as to allow the introduction of the cable 11 in the orifice 9, which is retained by the clamp 8 after the removal of the screwdriver 12.
  • the connection blocks 3 are oriented relative to the plane P of the intermediate part 6 of the bar 1, so that the direction R of the resultant of the forces exerted on the collector C during the connection operation is substantially parallel to the P plane of the intermediate portion 6 of the bar 1.
  • connection blocks 3 comprise fastening means 13 by snapping said blocks 3 onto the bar 1, these means comprising a groove 13 extending from one side to the other of the blocks 3 and adapted to receive the bar 1 to slide so as to retain the blocks 3 on the bar 1. It can also be seen in these figures that the blocks 3 furthermore comprise means 14 intended to allow the blocks 3 of the bar 1 to be extracted.
  • connection blocks 3 are first fixed to the intermediate portion 6 of the copper bar 1 equipped with its screw terminal 2, by introduction (or snapping) of said bar 1 into the groove 13 of the blocks 3. Note that the number and type of blocks used will vary depending on the type of connection to be made.
  • the Figures 11 to 15 thus illustrate different arrangements of blocks adapted to the connection of cables of large or small section.
  • the assembly is fixed on supports 15 provided in the cabinet A ( figure 7 ) via the fastening parts 4,5 of the bar 1.
  • the blocks 3 can be oriented in eight different positions. Indeed, the same block 3 can be introduced from the top ( figs.16,17 ) or from below ( figs.18,19 )
  • the bar 1 itself can take two different positions ( figs16,19) and (figs 17,18 ).
  • Figures 17 and 18 represent the bar 1 in an inverted position with respect to the position of the bar 1 shown on the Figures 16 and 19 , that is to say that the bar, from one position to another underwent a position reversal with respect to a plane perpendicular to said bar. It is thus seen, for example, that the connection block 3 is in the upward position and the left in the figure 16 and 20 , pointing up and right on Figures 17 and 21 , pointing down and left on the Figures 18 and 22 and pointing down and right on the Figures 19 and 23 .
  • this block 3 can still take two different reversed positions depending on the connection means 7 are on one side or the other of the bar 1 as is the case for the blocks 3a, 3d or 3b, 3c on the figure 17 , in order to allow better access to the cables compared to the screwdriver.
  • the same block can take eight different positions.
  • the collector C can be placed in the cabinet A at all levels and in all positions so as to adapt to the arrival and the connection of the cables, as we see it on the figure 7 .
  • the collector C can be placed in a vertical position 16, 17, 18, in a horizontal position 19, 20, 21, 22, at the end 18 of a row of apparatuses. 23, directly on the bottom of the cabinet 21,22 and just below a row of apparatus 23, vertically 17 across the width of the cabinet A on crossbars 24, in a cable duct according to its width 22 or parallel to 16 the flow of cables.
  • the cables 11 are connected by inserting the end of said cables 11 into the orifices 9 after introducing the tip of the screwdriver 12 into the second orifice 10, this introduction of the tip of the screwdriver 12 against the force of an elastic part belonging to the clamp 8 having the effect of releasing the opening of the first port 9 to allow access to the cables.
  • the angle ⁇ of action of the screwdriver 12 relative to the fixing plane Q corresponds to the angle ⁇ of inclination of the bar 1 with respect to this same plane of attachment Q.
  • the direction R the resultant forces exerted on the collector C is parallel to the plane P of the bar (intermediate portion of the bar).
  • the assembly comprising the bar 1 and the block 3 concerned thus has a very good mechanical strength in bending to withstand the forces required for the connection of the cables.
  • this angle of action of the screwdriver 12 about 45 °, is particularly suitable for facilitating access to the cables 11 in the electrical cabinet.
  • the action of the screwdriver is not impeded by the presence of the cables that are below the screwdriver. As a result, the connection operation is facilitated as well as the reading of the diagrams and the addition or removal of cables in case of evolution of the wiring.
  • a collector of simple and economical design and having optimum mechanical strength in bending has been realized.
  • This collector is intended in particular to be mounted in cabinets or electrical cabinets and allows a quick and modular connection depending on the different sections of cables and the number of cables required.
  • the invention is not limited to the embodiments described and illustrated which have been given by way of example.
  • the described embodiment relates to a ground collector, the invention can be applied in the same manner to a neutral collector or other collector of the same type for connecting cables.

Landscapes

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

Description

L'invention concerne un collecteur électrique destiné notamment à être monté dans une armoire ou un coffret électrique et comprenant une barre conductrice comprenant une partie aplatie, au moins un organe de connexion électrique monté sur ladite barre et comportant au moins un moyen de connexion, chacun de ces moyens étant destiné à permettre la raccordement électrique d'un câble ou analogue à ladite barre, l'opération de raccordement précité étant réalisé au moyen d'un outil approprié, ainsi qu'un bloc de connexion adapté à un tel collecteur.
On connaît un collecteur de terre constitué par une barre en laiton comportant un bloc de connexion monobloc avec ladite barre, ledit bloc comportant un certain nombre de moyens de connexions du type à vis. Or, dans ce type de collecteur, l'orientation des points de raccordement est figée dans une seule direction perpendiculaire au plan de fixation de la barre, d'où il peut résulter une certaine incommodité pendant l'opération de raccordement En outre, le nombre de points de raccordement et la section des câbles à raccorder sont fixes, et le mode de connexion à vis engendre un temps de connexion relativement long. On connaît également un autre type de collecteur de terre constitué par une barre en cuivre sur laquelle sont fixés une multitude de petits cavaliers en cuivre constituant des bornes à vis pour le raccordement des câbles. Les inconvénients de ce type de système tiennent principalement en ce que l'ensemble n'a pas une résistance mécanique suffisante pour résister aux efforts nécessaires pour le raccordement des câbles, d'où il résulte des déformations en flexion de la barre. D'autre part, comme dans le système décrit précédemment, l'orientation des points de raccordement est figée dans une seule direction perpendiculaire au plan de fixation de la barre; ce système ne permet pas le raccordement de câbles de sections différentes ; le nombre de points de raccordement est fixe; et le temps de connexion des câbles est particulièrement long.The invention relates to an electrical collector intended in particular to be mounted in a cabinet or an electrical box and comprising a conductive bar comprising a flattened portion, at least one electrical connection member mounted on said bar and comprising at least one connection means, each these means being intended to allow the electrical connection of a cable or the like to said bar, the aforementioned connection operation being performed by means of a suitable tool, and a connection block adapted to such a collector.
There is known a ground collector constituted by a brass bar having a monobloc connection block with said bar, said block comprising a number of screw type connection means. However, in this type of collector, the orientation of the connection points is fixed in a single direction perpendicular to the plane of attachment of the bar, where it may result in some inconvenience during the connection operation. connection points and the section of the cables to be connected are fixed, and the screw connection mode generates a relatively long connection time. Another type of earth collector consists of a copper bar on which are fixed a multitude of small copper jumpers constituting screw terminals for connecting the cables. The disadvantages of this type of system are mainly because the assembly does not have sufficient mechanical strength to withstand the forces required for the connection of the cables, resulting in bending deformation of the bar. On the other hand, as in the system described above, the orientation of the connection points is fixed in a single direction perpendicular to the fixing plane of the bar; this system does not allow the connection of cables of different sections; the number of connection points is fixed; and the connection time of the cables is particularly long.

On connaît également le document DE 197 09 815 décrivant un collecteur comportant les caractéristiques du préambule de la revendication 1.The document is also known DE 197 09 815 describing a collector having the features of the preamble of claim 1.

La présente invention résout ces problèmes et propose un collecteur électrique de conception simple, présentant une très bonne résistance mécanique aux efforts nécessaires pour le raccordement des câbles, de grandes possibilités d'adaptation par rapport à la position des câbles, et avec lequel l'opération de raccordement est facilitée. La présente invention a encore pour objet un bloc de connexion destiné notamment à constituer un élément constitutif dudit collecteur.The present invention solves these problems and proposes an electrical collector of simple design, having a very good mechanical resistance to the forces necessary for the connection of the cables, great possibilities of adaptation with respect to the position of the cables, and with which the operation connection is facilitated. The present invention also relates to a connection block intended in particular to constitute a constituent element of said collector.

A cet effet, la présente invention a pour objet un collecteur du genre précédemment mentionne ce collecteur étant caractérisé en ce que le, l'un au moins ou chaque organes de connexion est orienté par rapport au plan de ladite barre de manière que la direction de la résultante des efforts exercés sur le collecteur par l'outil précité pendant l'opération de raccordement soit sensiblement parallèle au plan de ladite barre. Cette barre comprend une première partie destinée à recevoir les organes de connexion précités et une seconde partie comprenant au moins une partie de fixation de la barre dans l'armoire ou le coffret précité, et la (les) partie(s) de fixation est (sont) située(s) dans un plan dit plan de fixation, lequel plan est décalé angulairement par rapport au plan contenant la première partie de la barre, dit plan de la barre.For this purpose, the subject of the present invention is a collector of the kind previously mentioned, this collector being characterized in that the at least one or each connecting member is oriented relative to the plane of said bar so that the direction of the resultant forces exerted on the manifold by the aforementioned tool during the connection operation is substantially parallel to the plane of said bar. This bar comprises a first part intended to receive the aforementioned connecting members and a second part comprising at least one fixing part of the bar in the aforementioned cabinet or cabinet, and the part (s) of attachment is ( are) located in a plane said plane of attachment, which plane is angularly offset from the plane containing the first part of the bar, said plane of the bar.

Selon une autre caractéristique, le bloc comporte en outre des moyens d'extraction du bloc de la barre, ces moyens étant agencés de manière que la direction de la résultante des efforts exercés sur le collecteur pendant l'opération d'extraction, soit sensiblement parallèle au plan de la barre.According to another characteristic, the block further comprises means for extracting the block from the bar, these means being arranged in such a way that the direction of the resultant of the forces exerted on the collector during the extraction operation is substantially parallel. to the plane of the bar.

Avantageusement, ces moyens d'extraction comprennent au moins une encoche réalisée dans le(s)dit(s) bloc(s), la(les) dite(s) encoche(s) étant destinée(s) à coopérer avec la pointe d'un tournevis.Advantageously, these extraction means comprise at least one notch made in the said block (s), the said slot (s) being intended to cooperate with the tip of 'a screwdriver.

Selon une caractéristique particulière, les organes de connexion comprennent des modules, lesdits modules comportant l'un par rapport à l'autre, un nombre de moyens de connexion égal ou différent et/ou étant adaptés à des sections de câbles égales ou différentes.According to a particular characteristic, the connection members comprise modules, said modules comprising, with respect to each other, a number of equal or different connection means and / or being adapted to equal or different cable sections.

Mais d'autres avantages et caractéristiques de l'invention apparaîtront mieux dans la description détaillée qui suit et se réfère aux dessins annexés donnés uniquement à titre d'exemple et dans lesquels :

  • La fig.1 est une vue en perspective, illustrant un collecteur selon l'invention,
  • La fig.2 illustre une barre appartenant à un collecteur selon l'invention, suivant deux orientations de celle-ci.
  • La fig.2a illustre la barre dans un plan perpendiculaire à son plan de fixation,
  • La fig.2b illustre la barre dans un plan parallèle à son plan de fixation,
  • Les figures 3 et 4 sont deux vues en perspective d'un bloc de connexion selon l'invention, respectivement suivant deux orientations différentes,
  • Les figures 5 et 6 sont deux vues similaires aux précédentes, illustrant un autre bloc de connexion,
  • La fig.7 est une vue partielle de face d'une armoire électrique en position ouverte, ladite armoire comportant un certain nombre de collecteurs selon l'invention,
  • La fig.8 est une vue en perspective d'un collecteur selon l'invention, illustrant l'opération de raccordement de deux câbles,
  • La fig.9 est une vue de côté de la figure 8,
  • La fig.10 est une vue partielle en perspective d'un collecteur selon l'invention, illustrant l'opération de retrait d'un bloc de connexion,
  • Les fig.11 à 15 sont des vues en perspective, illustrant respectivement cinq réalisations différentes d'un collecteur selon l'invention,
  • Les fig.16 à 19 illustrent le collecteur selon l'invention, suivant respectivement quatre orientations différentes des blocs de connexion autour de l'axe de la barre, et
  • Les fig.20 à 23 sont des vues de gauche des figures 16 à 19.
But other advantages and features of the invention will become more apparent in the detailed description which follows and refers to the accompanying drawings given solely by way of example and in which:
  • The fig.1 is a perspective view, illustrating a collector according to the invention,
  • The fig.2 illustrates a bar belonging to a collector according to the invention, according to two orientations thereof.
  • The fig.2a illustrates the bar in a plane perpendicular to its plane of attachment,
  • The fig.2b illustrates the bar in a plane parallel to its attachment plane,
  • The Figures 3 and 4 are two perspective views of a connection block according to the invention, respectively in two different orientations,
  • The Figures 5 and 6 are two views similar to the previous ones, illustrating another connection block,
  • The fig.7 is a partial front view of an electrical cabinet in the open position, said cabinet comprising a number of collectors according to the invention,
  • The fig.8 is a perspective view of a collector according to the invention, illustrating the operation of connecting two cables,
  • The fig.9 is a side view of the figure 8 ,
  • The fig.10 is a partial perspective view of a collector according to the invention, illustrating the operation of removing a connection block,
  • The fig.11 to 15 are perspective views, respectively illustrating five different embodiments of a collector according to the invention,
  • The fig.16 to 19 illustrate the collector according to the invention, respectively following four different orientations of the connection blocks around the axis of the bar, and
  • The fig.20 to 23 are leftist views of Figures 16 to 19 .

Sur la figure 1, on voit un collecteur de terre C selon l'invention destiné à être placé dans une armoire électrique A, telle qu'illustrée sur la figure 7, afin de permettre le raccordement à la terre des différents appareils, en l'occurrence des disjoncteurs D, placés dans cette armoire A.
Ce collecteur C est constitué sur la figure 1 par une barre en cuivre 1 sur laquelle sont fixées une borne à vis 2 et quatre blocs de connexion 3, respectivement trois blocs de connexion 3a adaptés au raccordement de câbles de petite section et un bloc de connexion 3b adapté au raccordement de câbles de grande section. La borne à vis 2 , réalisée en tôle pliée, est destinée à établir entre la barre en cuivre 1 et la terre une équipotentialité, tandis que les blocs de connexion 3 sont destinés à relier électriquement des câbles en provenance des appareils à la barrel. La barre 1 est composée d'une première partie, constituée de deux parties de fixation 4,5 situées respectivement aux deux extrémités de la barre 1, et d'une seconde partie 6, dite intermédiaire, destinée à recevoir les blocs de connexion 3. Le plan P contenant la partie intermédiaire 6 (ou plan de la barre) forme avec le plan Q des parties de fixation, ou plan de fixation, un angle α (fig.9) d'environ 45°, ce décalage angulaire ayant été réalisé par torsion de la barre 1.
Chaque bloc de connexion 3 comporte un certain nombre de moyens de connexion 7, ceux-ci étant du type à connectique rapide. Chaque moyen de connexion 7 comporte une pince à ressort 8 (fig.9) et deux orifices 9,10 destinés pour l'un 9, à recevoir un câble 11, et pour l'autre 10, à permettre l'introduction d'un tournevis 12 pour actionner la pince 8 de manière à permettre l'introduction du câble 11 dans l'orifice 9, lequel est retenu par la pince 8 après le retrait du tournevis 12.
Conformément à l'invention, et comme illustré sur les figures 8 et 9, les blocs de connexion 3 sont orientés par rapport au plan P de la partie intermédiaire 6 de la barre 1, de telle façon que la direction R de la résultante des efforts exercés sur le collecteur C pendant l'opération de raccordement soit sensiblement parallèle au plan P de la partie intermédiaire 6 de la barre 1. On voit en effet sur ces figures, que les efforts appliqués sur le collecteur C par la pointe du tournevis 12 vérifient cette caractéristique de l'invention.
Comme on le voit sur les figures 1 et 3 à 6, les blocs de connexion 3 comprennent des moyens de fixation 13 par encliquetage desdits blocs 3 sur la barre 1, ces moyens comprenant une rainure 13 s'étendant d'un côté à l'autre des blocs 3 et apte à recevoir la barre 1 à coulissement de manière à retenir les blocs 3 sur la barre 1.
On voit également sur ces figures, que les blocs 3 comportent en outre des moyens 14 destinés à permettre l'extraction des blocs 3 de la barre 1. Ces moyens comprennent une encoche 14 prévue sur la face externe des blocs et s'étendant d'un côté à l'autre des blocs, dans un plan sensiblement parallèle au plan de la partie intermédiaire 6 de la barre 1 ou au plan de la rainure 13 prévue dans le bloc 3.
L'opération de montage du collecteur C dans l'armoire A et de raccordement des câbles 11 à la barre 1 va être décrite brièvement dans ce qui suit en référence aux figures.
Les blocs de raccordement 3 sont tout d'abord fixés sur la partie intermédiaire 6 de la barre 1 en cuivre équipée de sa borne à vis 2, par introduction (ou encliquetage) de la dite barre 1 dans la rainure 13 des blocs 3.
On notera que le nombre et le type de blocs utilisé variera en fonction du type de raccordement à effectuer. Les figures 11 à 15 illustrent ainsi différents agencements de blocs adaptés au raccordement de câbles de grande ou de petite section. Une fois les blocs 3 fixés sur la barre 1, l'ensemble est fixé sur des supports 15 prévus dans l'armoire A (figure 7) par l'intermédiaire des parties de fixations 4,5 de la barre 1.
Comme on le voit sur les figures 16 à 19, et comme ceci sera expliqué dans ce qui suit, les blocs 3 peuvent être orientés suivant huit positions différentes. En effet, un même bloc 3 peut être introduit par le haut (figs.16,17) ou par le bas (figs.18,19) de la barre 1. En outre, la barre 1 elle-même peut prendre deux positions différentes (figs16,19) et (figs 17,18). En effet, les figures 17 et 18 représentent la barre 1 dans une position inversée par rapport à la position de la barre 1 représentée sur les figures 16 et 19, c'est à dire que la barre, d'une position à l'autre a subi une inversion de position par rapport à un plan perpendiculaire à ladite barre. On voit ainsi, par exemple, que le bloc de raccordement 3 se trouve dans la position orientée vers le haut et la gauche sur les figure 16 et 20, orientée vers le haut et la droite sur les figures 17 et 21, orientée vers le bas et la gauche sur les figures 18 et 22 et orientée vers le bas et la droite sur les figures 19 et 23. Enfin, pour une même position de la barre 1, et un même sens de montage du bloc 3, par le haut ou par le bas de la barre 1, ce bloc 3 peut encore prendre deux positions différentes inversées selon que les moyens de connexion 7 se trouvent d'un côté ou de l'autre de la barre 1 comme ceci est le cas pour les blocs 3a,3d ou 3b,3c sur la figure 17, ceci afin de permettre un meilleur accès aux câbles par rapport au tournevis. Il en résulte qu'un même bloc peut prendre huit positions différentes.
Compte tenu de cette possibilité d'orienter les blocs de raccordement, le collecteur C peut être placé dans l'armoire A à tous les niveaux et dans toutes les positions de manière à s'adapter à l'arrivée et au raccordement des câbles, comme on le voit sur la figure 7. Ainsi, en se reportant à cette figure, on voit que le collecteur C peut être placé en position verticale 16,17,18, en position horizontale 19,20,21,22, à l'extrémité 18 d'une rangée d'appareils 23, directement sur le fond de l'armoire 21,22 et juste en dessous 20 d'une rangée d'appareils 23, verticalement 17 sur toute la largeur de l'armoire A sur des traverses 24, dans une gaine à câble suivant sa largeur 22 ou bien parallèlement 16 au flux de câbles.
Lorsque les collecteurs C sont fixés dans l'armoire A, le raccordement des câbles 11 s'effectue en introduisant l'extrémité desdits câbles 11 dans les orifices 9 après avoir introduit la pointe du tournevis 12 dans le second orifice 10, cette introduction de la pointe du tournevis 12 à l'encontre de la force d'une pièce élastique appartenant à la pince 8 ayant pour effet de libérer l'ouverture du premier orifice 9 pour permettre l'accès aux câbles. Pendant cette opération de raccordement, et comme on le voit sur les figures 8 et 9, l'angle β d'action du tournevis 12 par rapport au plan de fixation Q correspond à l'angle α d'inclinaison de la barre 1 par rapport à ce même plan de fixation Q. Ainsi, pendant cette opération, la direction R de la résultante des efforts exercés sur le collecteur C est parallèle au plan P de la barre (partie intermédiaire de la barre). L'ensemble comprenant la barre 1 et le bloc 3 concerné présente donc une très bonne résistance mécanique en flexion pour résister aux efforts nécessaires pour le raccordement des câbles. On voit également sur la figure 9 que cet angle d'action du tournevis 12, d'environ 45°, est particulièrement adapté pour faciliter l'accès aux câbles 11 dans l'armoire électrique. En outre, l'action du tournevis n'est pas entravée par la présence des câbles qui se trouvent en dessous du tournevis. Il en résulte que l'opération de raccordement est facilitée ainsi que la lecture des schémas et le rajout ou le retrait de câbles en cas d'évolution du câblage.
En se reportant à la figure 10, on voit que l'opération de retrait d'un bloc 3 s'effectue en utilisant le même tournevis 12, celui-ci ayant la même orientation angulaire. Pour ce faire, la pointe du tournevis 12 est introduite dans les encoches 14 prévues à cet effet dans le bloc 3 et une traction est exercée sur le bloc 3 à l'aide du tournevis 12 jusqu'à ce que la barre 1 soit désengagée de la rainure 13 du bloc 3. Lors de cette opération, la direction de la résultante S des efforts exercés sur le collecteur C est, là encore, parallèle au plan P de la barre 1 (partie intermédiaire), d'où il résulte que les risques de flexion de la barre 1 pendant cette opération sont considérablement diminués.On the figure 1 an earth collector C according to the invention is shown intended to be placed in an electrical cabinet A, as illustrated on FIG. figure 7 , in order to allow the connection to earth of the different devices, in this case circuit breakers D, placed in this cabinet A.
This collector C is constituted on the figure 1 by a copper bar 1 on which are fixed a screw terminal 2 and four connection blocks 3, respectively three connection blocks 3a adapted to the connection of small section cables and a connection block 3b adapted to the connection of large section cables . The terminal screw 2, made of folded sheet metal, is intended to establish between the copper bar 1 and earth equipotentiality, while the connection blocks 3 are intended to electrically connect cables from the apparatus to the barrel. The bar 1 is composed of a first part, consisting of two fixing parts 4,5 located respectively at the two ends of the bar 1, and a second part 6, called intermediate, intended to receive the connection blocks 3. The plane P containing the intermediate portion 6 (or plane of the bar) forms, with the plane Q, fastening portions, or plane of attachment, an angle α ( fig.9 ) about 45 °, this angular offset having been made by twisting the bar 1.
Each connection block 3 comprises a number of connection means 7, these being of the fast connector type. Each connection means 7 comprises a spring clip 8 ( fig.9 ) and two orifices 9, 10 for the one 9, to receive a cable 11, and the other 10, to allow the introduction of a screwdriver 12 to actuate the clamp 8 so as to allow the introduction of the cable 11 in the orifice 9, which is retained by the clamp 8 after the removal of the screwdriver 12.
According to the invention, and as illustrated on the Figures 8 and 9 the connection blocks 3 are oriented relative to the plane P of the intermediate part 6 of the bar 1, so that the direction R of the resultant of the forces exerted on the collector C during the connection operation is substantially parallel to the P plane of the intermediate portion 6 of the bar 1. It is seen in these figures, that the forces applied to the collector C by the tip of the screwdriver 12 verify this feature of the invention.
As we see on the Figures 1 and 3 to 6 , the connection blocks 3 comprise fastening means 13 by snapping said blocks 3 onto the bar 1, these means comprising a groove 13 extending from one side to the other of the blocks 3 and adapted to receive the bar 1 to slide so as to retain the blocks 3 on the bar 1.
It can also be seen in these figures that the blocks 3 furthermore comprise means 14 intended to allow the blocks 3 of the bar 1 to be extracted. These means comprise a notch 14 provided on the outer face of the blocks and extending from one side to another of the blocks, in a plane substantially parallel to the plane of the intermediate portion 6 of the bar 1 or the plane of the groove 13 provided in the block 3.
The assembly operation of the collector C in the cabinet A and cable connection 11 to the bar 1 will be briefly described in the following with reference to the figures.
The connection blocks 3 are first fixed to the intermediate portion 6 of the copper bar 1 equipped with its screw terminal 2, by introduction (or snapping) of said bar 1 into the groove 13 of the blocks 3.
Note that the number and type of blocks used will vary depending on the type of connection to be made. The Figures 11 to 15 thus illustrate different arrangements of blocks adapted to the connection of cables of large or small section. Once the blocks 3 fixed on the bar 1, the assembly is fixed on supports 15 provided in the cabinet A ( figure 7 ) via the fastening parts 4,5 of the bar 1.
As we see on the Figures 16 to 19 As will be explained in the following, the blocks 3 can be oriented in eight different positions. Indeed, the same block 3 can be introduced from the top ( figs.16,17 ) or from below ( figs.18,19 ) In addition, the bar 1 itself can take two different positions ( figs16,19) and (figs 17,18 ). Indeed, Figures 17 and 18 represent the bar 1 in an inverted position with respect to the position of the bar 1 shown on the Figures 16 and 19 , that is to say that the bar, from one position to another underwent a position reversal with respect to a plane perpendicular to said bar. It is thus seen, for example, that the connection block 3 is in the upward position and the left in the figure 16 and 20 , pointing up and right on Figures 17 and 21 , pointing down and left on the Figures 18 and 22 and pointing down and right on the Figures 19 and 23 . Finally, for the same position of the bar 1, and the same direction of assembly of the block 3, from the top or the bottom of the bar 1, this block 3 can still take two different reversed positions depending on the connection means 7 are on one side or the other of the bar 1 as is the case for the blocks 3a, 3d or 3b, 3c on the figure 17 , in order to allow better access to the cables compared to the screwdriver. As a result, the same block can take eight different positions.
Given this possibility of orienting the connection blocks, the collector C can be placed in the cabinet A at all levels and in all positions so as to adapt to the arrival and the connection of the cables, as we see it on the figure 7 . Thus, referring to this figure, it can be seen that the collector C can be placed in a vertical position 16, 17, 18, in a horizontal position 19, 20, 21, 22, at the end 18 of a row of apparatuses. 23, directly on the bottom of the cabinet 21,22 and just below a row of apparatus 23, vertically 17 across the width of the cabinet A on crossbars 24, in a cable duct according to its width 22 or parallel to 16 the flow of cables.
When the collectors C are fixed in the cabinet A, the cables 11 are connected by inserting the end of said cables 11 into the orifices 9 after introducing the tip of the screwdriver 12 into the second orifice 10, this introduction of the tip of the screwdriver 12 against the force of an elastic part belonging to the clamp 8 having the effect of releasing the opening of the first port 9 to allow access to the cables. During this connection operation, and as seen on the Figures 8 and 9 , the angle β of action of the screwdriver 12 relative to the fixing plane Q corresponds to the angle α of inclination of the bar 1 with respect to this same plane of attachment Q. Thus, during this operation, the direction R the resultant forces exerted on the collector C is parallel to the plane P of the bar (intermediate portion of the bar). The assembly comprising the bar 1 and the block 3 concerned thus has a very good mechanical strength in bending to withstand the forces required for the connection of the cables. We also see on the figure 9 that this angle of action of the screwdriver 12, about 45 °, is particularly suitable for facilitating access to the cables 11 in the electrical cabinet. In addition, the action of the screwdriver is not impeded by the presence of the cables that are below the screwdriver. As a result, the connection operation is facilitated as well as the reading of the diagrams and the addition or removal of cables in case of evolution of the wiring.
Referring to the figure 10 it is seen that the removal operation of a block 3 is performed using the same screwdriver 12, the latter having the same angular orientation. To do this, the tip of the screwdriver 12 is inserted into the notches 14 provided for this purpose in the block 3 and a pull is exerted on the block 3 with the screwdriver 12 until the bar 1 is disengaged from the groove 13 of the block 3. During this operation, the direction of the As a result, the forces exerted on the collector C are, again, parallel to the plane P of the bar 1 (intermediate portion), from which it follows that the risks of bending of the bar 1 during this operation are considerably reduced.

On a donc réalisé grâce à l'invention un collecteur de conception simple et économique et présentant une résistance mécanique en flexion optimale. Ce collecteur est destiné notamment à être monté dans des coffrets ou armoires électriques et permet un raccordement rapide et modulaire en fonction des différentes sections des câbles et du nombre de câbles nécessaire.
Bien entendu, l'invention n'est pas limitée aux modes de réalisations décrits et illustrés qui n'ont été donnés qu'à titre d'exemple.
C'est ainsi que bien que la réalisation décrite concerne un collecteur de terre, l'invention peut s'appliquer de la même manière à un collecteur de neutre ou à tout autre collecteur de même type destiné au raccordement de câbles.Thus, thanks to the invention, a collector of simple and economical design and having optimum mechanical strength in bending has been realized. This collector is intended in particular to be mounted in cabinets or electrical cabinets and allows a quick and modular connection depending on the different sections of cables and the number of cables required.
Of course, the invention is not limited to the embodiments described and illustrated which have been given by way of example.
Thus, although the described embodiment relates to a ground collector, the invention can be applied in the same manner to a neutral collector or other collector of the same type for connecting cables.

Claims (13)

  1. An electric collector designed in particular to be fitted in an electrical cabinet or enclosure and comprising a conducting bar comprising a flattened part, at least one electric connection device fitted on said bar and comprising at least one connection means, each of these means being designed to enable electric connection of a cable or similar to said bar, the above-mentioned connection operation being achieved by means of a suitable tool,
    characterized in that said bar (1) comprises a first part (6) designed to receive the above-mentioned connection devices (3) and a second part comprising at least one fixing part (4,5) for fixing the bar (1) in the above-mentioned cabinet A or enclosure, and that the fixing part(s) (4,5) is(are) situated in a plane called the fixing plane, which plane Q is angularly offset with respect to the plane P containing the first part (6) of the bar (1), called the plane of the bar (1), and that the at least one or each connection device (3) is oriented with respect to the plane P of said bar (1) in such a way that the direction R of the resultant of the forces exerted on the collector C by the above-mentioned tool (12) during the connection operation is appreciably parallel to said plane P of the bar (1).
  2. The collector according to claim 1, characterized in that the angular offset α between the plane P containing the first part (6) of the bar (1) and the fixing plane Q is about 45°.
  3. The collector according to claim 1 or 2, characterized in that the above-mentioned angular offset α is achieved by torsion of the bar (1).
  4. The collector according to any one of the foregoing claims, characterized in that the, one, or each of the connection devices comprises a connection block (3), said block (3) comprising clipping means (13) for clipping said block (3) onto the bar (1).
  5. The collector according to claim 4, characterized in that these clipping means comprise a groove (13) designed to receive the bar (1) with sliding.
  6. The collector according to any one of the foregoing claims, characterized in that the, one, or each connection device comprises a connection block (3), said block (3) comprising extraction means (14) for extracting the block (3) from the bar (1), these means (14) being arranged in such a way that the direction S of the resultant of the forces exerted on the collector C during the extraction operation is appreciably parallel to the plane P of the bar (1).
  7. The collector according to claim 6, characterized in that these extraction means comprise at least one notch (14) made in said block(s) (3), said notch(es) (14) being designed to co-operate with the tip of a screwdriver (12).
  8. The collector according to any one of the foregoing claims, characterized in that the above-mentioned connection means (7) are of the type called fast-on connection.
  9. The collector according to any one of the foregoing claims, characterized in that the above-mentioned connection means (7) each comprise a spring clamp (8) and two openings (9, 10) provided in the block (3), one (9) of which openings is designed to receive a cable (11), whereas the other (10) is designed to receive the tip of a screwdriver (12) designed to actuate the clamp (8).
  10. The collector according to any one of the foregoing claims, characterized in that the bar (1) is made of copper.
  11. The collector according to any one of the foregoing claims, characterized in that the connection devices (3) comprise modules, said modules comprising an equal or different number of connection means (7) with respect to one another and/or being suitable for equal or different cable cross-sections.
  12. The collector according to any one of the foregoing claims, characterized in that it is used as earth collector.
  13. The collector according to any one of the foregoing claims, characterized in that it is used as neutral collector.
EP03354014A 2002-04-09 2003-02-18 Electrical bus bar Expired - Lifetime EP1353408B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0204386 2002-04-09
FR0204386A FR2838247A1 (en) 2002-04-09 2002-04-09 Electrical cupboard/container electrical connector having connection unit slanted upwards from bar plane reducing efforts collector exercised during tool connection operations.

Publications (2)

Publication Number Publication Date
EP1353408A1 EP1353408A1 (en) 2003-10-15
EP1353408B1 true EP1353408B1 (en) 2011-06-15

Family

ID=28052222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03354014A Expired - Lifetime EP1353408B1 (en) 2002-04-09 2003-02-18 Electrical bus bar

Country Status (4)

Country Link
EP (1) EP1353408B1 (en)
CN (1) CN100511838C (en)
ES (1) ES2364040T3 (en)
FR (1) FR2838247A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4778412A (en) * 1987-03-27 1988-10-18 Walter Electrical Manufacturing Company Buss bar assemblies

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB767571A (en) * 1954-05-27 1957-02-06 Astral Switchgear Ltd Improvements in and relating to multiway electric terminal blocks
DE19709815B4 (en) * 1997-03-10 2004-04-15 Siemens Ag Modular device with removable attachment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4778412A (en) * 1987-03-27 1988-10-18 Walter Electrical Manufacturing Company Buss bar assemblies

Also Published As

Publication number Publication date
CN1450688A (en) 2003-10-22
FR2838247A1 (en) 2003-10-10
EP1353408A1 (en) 2003-10-15
CN100511838C (en) 2009-07-08
ES2364040T3 (en) 2011-08-23

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