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EP2136437B1 - Terminal board with enhanced resistance to short circuits - Google Patents

Terminal board with enhanced resistance to short circuits Download PDF

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Publication number
EP2136437B1
EP2136437B1 EP09160303A EP09160303A EP2136437B1 EP 2136437 B1 EP2136437 B1 EP 2136437B1 EP 09160303 A EP09160303 A EP 09160303A EP 09160303 A EP09160303 A EP 09160303A EP 2136437 B1 EP2136437 B1 EP 2136437B1
Authority
EP
European Patent Office
Prior art keywords
opening
comb
bar
teeth
module
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.)
Active
Application number
EP09160303A
Other languages
German (de)
French (fr)
Other versions
EP2136437A1 (en
Inventor
Christian Carreaud
Gaetan Lasmartres
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.)
Legrand SNC
Legrand France SA
Original Assignee
Legrand SNC
Legrand France SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Legrand SNC, Legrand France SA filed Critical Legrand SNC
Publication of EP2136437A1 publication Critical patent/EP2136437A1/en
Application granted granted Critical
Publication of EP2136437B1 publication Critical patent/EP2136437B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01R9/2458—Electrical interconnections between terminal blocks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • 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
    • H01R4/4846—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
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/03—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations
    • H01R11/05—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations the connecting locations having different types of direct connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2101/00—One pole
    • 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

Definitions

  • the present invention relates generally to terminal blocks of the type of those used for example in electrical distribution boards, in junction boxes, or in electrical cabinets.
  • the invention relates to a terminal block comprising at least a first equipotential electrical connection module, this first module comprising a bar made of rigid and conductive material extending in a longitudinal direction and pierced with connection orifices, these orifices being juxtaposed according to the longitudinal direction and each passing through the bar in a transverse direction perpendicular to the longitudinal direction, each connection orifice being equipped with a screw engaged in a corresponding thread drilled in the bar in a direction perpendicular to the longitudinal and transverse directions, and the screw equipping each orifice can thus clamp, in use, a cable engaged in this orifice against a wall wall of this hole.
  • this first module comprising a bar made of rigid and conductive material extending in a longitudinal direction and pierced with connection orifices, these orifices being juxtaposed according to the longitudinal direction and each passing through the bar in a transverse direction perpendicular to the longitudinal direction, each connection orifice being equipped with a screw engaged in a corresponding
  • a terminal block of this type is for example described in the patent documents DE 20306229 and FR 2,750,262 .
  • the main quality criteria of such a terminal block are the mechanical strength, the improvement of the resistance to high currents of short circuits in an identical or even smaller volume, the thermal conductivity, and the compactness, which is important at the same time. for saving material and for ease of installation.
  • the essential problem that the design of such terminal blocks has to overcome lies in the fact that these characteristics are antinomic in several respects.
  • materials having the desirable mechanical strength such as brass, have average electrical conductivity and thermal conductivity.
  • the purpose of the invention is to propose a terminal block whose structure offers an excellent compromise for obtaining these contradictory performances.
  • the terminal block of the invention is essentially characterized in that the first module further comprises a copper monobloc comb essentially formed of a row of mutually parallel juxtaposed teeth and of a bar connecting and supporting the teeth, in that each tooth of the comb is inserted into a corresponding orifice of the bar and resting on the floor of this orifice, this tooth being thus, in use, interposed between this floor and the engaged cable in this hole, and in that the strip of the comb is folded against the teeth, the floor of each hole being thus sandwiched between the strip of the comb and the tooth corresponding to this orifice.
  • the first module further comprises a copper monobloc comb essentially formed of a row of mutually parallel juxtaposed teeth and of a bar connecting and supporting the teeth, in that each tooth of the comb is inserted into a corresponding orifice of the bar and resting on the floor of this orifice, this tooth being thus, in use, interposed between this floor and the engaged cable in this hole, and in that the strip of the
  • the bar can then be made of brass without limiting the resistance of the terminal block to short-circuit currents, or its ability to evacuate heat.
  • each orifice is flat and that each tooth of the comb itself is at least partially flat.
  • Each tooth of the comb may further have lateral flanges intended to bear against side walls of the corresponding orifice, contiguous to the floor of this orifice.
  • the bar of the comb has a longitudinal section protruding from the row of teeth, in particular in the case where the terminal block comprises a second equipotential electrical connection module comprising a cage of conductive material and arranged in the extension. of the bar of the first connection module.
  • the terminal block may then comprise an elastic clip gripping together the cage of the second connection module and at least a portion of the longitudinal section of the bar which protrudes from the row of teeth of the comb of the first module, the two modules being thus coupled effectively mechanically, electrically, and thermally.
  • the invention relates to an electrical connection terminal block, a non-limiting example of which is illustrated in FIGS. Figures 1 and 2 .
  • terminal blocks There are several types of terminal blocks, namely essentially screw terminal blocks, self-locking terminal blocks, and mixed terminal blocks.
  • the cable is tightened by means of a spring blade which is elastically displaced by the cable when the cable is inserted into a connection hole, and which, by its harpoon shape, opposes the extraction of the cable out of the orifice.
  • the invention relates primarily to the screw terminals and, consequently, also to the terminal blocks the terminal strips which include, as illustrated in Figures 1 and 2 , a module M1 of screw terminal block and a module M2 of terminal block with automatic locking.
  • a terminal block according to the invention therefore comprises at least one module M1 equipotential electrical screw connection.
  • Such a module M1 traditionally comprises a bar 1 of rigid and conductive material, for example of brass, extending in a longitudinal direction X and pierced with connection orifices 11.
  • connection ports 11 are juxtaposed in the longitudinal direction X and each pass through the bar 1 in a transverse direction perpendicular to the longitudinal direction X.
  • connection port 11 is equipped with a screw 12 engaged in a corresponding thread 120, this thread being pierced in the bar 1 in a vertical direction on the Figures 1 and 2 , that is to say in a direction perpendicular both to the longitudinal direction X of the bar 1 and to the transverse direction of the orifices 11.
  • each thread 120 Opposite each thread 120, the corresponding orifice 11 has a wall 110 forming a floor for the cable housing that constitutes this orifice.
  • the module M1 for screw connection which constitutes a terminal block according to the invention, or which belongs to such a terminal block, further comprises a comb 2 monobloc copper.
  • This comb 2 is essentially formed of a row of teeth 21 juxtaposed and mutually parallel, and a bar 22 which connects and supports the teeth 21.
  • each tooth 21 of the comb 2 is inserted into a corresponding orifice 11 of the bar 1 and is supported on the floor 110 of this orifice 11, very preferably over the entire width of the bar 1, that is to say along the entire length of the orifice 11.
  • each tooth 21 engaged in an orifice 11 is thus interposed between the floor 110 of this orifice and the cable K also engaged in this orifice 11.
  • each orifice 11 is preferably flat, each tooth 21 of the comb 2 itself being at least partially flat to be applied on the floor 110.
  • each tooth 21 of the comb 2 may have lateral flanges 211 which are intended to bear against the side walls 111 of the corresponding orifice 11, contiguous to the floor 110, so as to further increase the electrical and thermal contact between the bar 1 and the comb 2, to hold the cable under the screw, and to stiffen this tooth.
  • the bar 22 of the comb 2 is advantageously folded against the teeth 21, and thus adopts a position in which the floor 110 of each orifice 11 is clamped between the bar 22 of the comb 2 and the tooth 21 corresponding to this orifice 11.
  • the terminal block of the invention comprises, as illustrated in FIGS. Figures 1 and 2 , a module M2 of equipotential electrical connection with automatic locking, this second module itself comprising a cage 4 of conductive material, for example copper, and disposed in the extension of the bar 1 of the connection module M1 screw.
  • the bar 22 of the comb 2 may be longer than the row of teeth 21, that is to say have a free longitudinal section 221 protruding from the row of teeth 21.
  • the terminal block may comprise a clip 3 shaped as an elastic clip and making it possible to connect the connection modules M1 and M2 to each other at the same time mechanically, thermally and electrically.
  • the staple together encloses a web of the cage 4 of the module M2 and at least a portion of the longitudinal section 221 of the bar 22 of the module M1.
  • the module M2 comprises, in addition to the cage 4, a set 5 of spring blades, and the terminal block also comprises a support base 6 and a cover 7.
  • the cover 7 is designed to be snapped onto the support 6, in which are housed the bar 1, the comb 2, the staple 3, and the cage 4.
  • the leaf springs 5 are themselves housed inside the cage 4, in which these blades have the function of holding in the cage 4 cables inserted into the cells 60 of the base 6 and in this cage 4 through lights 70 of the hood 7.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Multi-Conductor Connections (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The board has an electric connection module comprising a bar (1) of rigid material e.g. brass, pierced with connection orifices (11). Each orifice has a wall forming a floor for housing a cable (K). A screw (12) locks the cable against the floor. The module has a single copper block flat comb (2) formed of a row of parallely juxtaposed teeth (21) and a connecting strip connecting and supporting the teeth. Each of teeth is inserted in the orifice and supported on the floor of the orifice. The teeth are interposed between the floor and the cable engaged in the orifice in service.

Description

La présente invention concerne, de façon générale, les borniers du type de ceux qui sont par exemple utilisés dans les tableaux de distribution électrique, dans les boîtes de dérivation, ou encore dans les armoires électriques.The present invention relates generally to terminal blocks of the type of those used for example in electrical distribution boards, in junction boxes, or in electrical cabinets.

Plus précisément l'invention concerne un bornier comprenant au moins un premier module de connexion électrique équipotentielle, ce premier module comportant un barreau en matériau rigide et conducteur s'étendant dans une direction longitudinale et percé d'orifices de connexion, ces orifices étant juxtaposés suivant la direction longitudinale et traversant chacun le barreau suivant une direction transversale perpendiculaire à la direction longitudinale, chaque orifice de connexion étant équipé d'une vis engagée dans un filetage correspondant percé dans le barreau suivant une direction perpendiculaire aux directions longitudinale et transversale, et la vis équipant chaque orifice pouvant ainsi serrer, en service, un câble engagé dans cet orifice contre une paroi formant plancher de cet orifice.More specifically, the invention relates to a terminal block comprising at least a first equipotential electrical connection module, this first module comprising a bar made of rigid and conductive material extending in a longitudinal direction and pierced with connection orifices, these orifices being juxtaposed according to the longitudinal direction and each passing through the bar in a transverse direction perpendicular to the longitudinal direction, each connection orifice being equipped with a screw engaged in a corresponding thread drilled in the bar in a direction perpendicular to the longitudinal and transverse directions, and the screw equipping each orifice can thus clamp, in use, a cable engaged in this orifice against a wall wall of this hole.

Un bornier de ce type est par exemple décrit dans les documents de brevets DE 20306229 et FR 2 750 262 .A terminal block of this type is for example described in the patent documents DE 20306229 and FR 2,750,262 .

Les principaux critères de qualité d'un tel bornier sont la tenue mécanique, l'amélioration de la tenue aux courants élevés de courts-circuits dans un volume identique voire plus faible, la conductibilité thermique, et la compacité, qui est importante à la fois pour l'économie de matière et pour la facilité d'installation. Or, le problème essentiel que doit surmonter la conception de tels borniers réside dans le fait que ces caractéristiques sont antinomiques à plusieurs égards.The main quality criteria of such a terminal block are the mechanical strength, the improvement of the resistance to high currents of short circuits in an identical or even smaller volume, the thermal conductivity, and the compactness, which is important at the same time. for saving material and for ease of installation. However, the essential problem that the design of such terminal blocks has to overcome lies in the fact that these characteristics are antinomic in several respects.

En effet, les matériaux présentant la tenue mécanique souhaitable, comme le laiton, présentent des conductibilités électrique et thermique moyennes.Indeed, materials having the desirable mechanical strength, such as brass, have average electrical conductivity and thermal conductivity.

Inversement, le cuivre, qui est connu comme présentant des conductibilités électrique et thermique excellentes, présente une tenue mécanique insuffisante.Conversely, copper, which is known to have excellent electrical and thermal conductivity, has insufficient mechanical strength.

Par ailleurs, plus les dimensions du bornier sont faibles, et plus il est difficile d'atteindre les performances requises en matière de tenue mécanique et d'évacuation de la chaleur.Moreover, the smaller the dimensions of the terminal block, and the more difficult it is to achieve the required performance in terms of mechanical strength and heat dissipation.

Dans ce contexte, l'invention a pour but de proposer un bornier dont la structure offre un excellent compromis pour l'obtention de ces performances contradictoires.In this context, the purpose of the invention is to propose a terminal block whose structure offers an excellent compromise for obtaining these contradictory performances.

A cette fin, le bornier de l'invention, par ailleurs conforme au préambule ci-dessus, est essentiellement caractérisé en ce que le premier module comporte en outre un peigne monobloc en cuivre essentiellement formé d'une rangée de dents juxtaposées mutuellement parallèles et d'une barrette reliant et supportant les dents, en ce que chaque dent du peigne est insérée dans un orifice correspondant du barreau et en appui sur le plancher de cet orifice, cette dent étant ainsi, en service, interposée entre ce plancher et le câble engagé dans cet orifice, et en ce que la barrette du peigne est repliée contre les dents, le plancher de chaque orifice étant ainsi enserré entre la barrette du peigne et la dent correspondant à cet orifice.To this end, the terminal block of the invention, furthermore in accordance with the preamble above, is essentially characterized in that the first module further comprises a copper monobloc comb essentially formed of a row of mutually parallel juxtaposed teeth and of a bar connecting and supporting the teeth, in that each tooth of the comb is inserted into a corresponding orifice of the bar and resting on the floor of this orifice, this tooth being thus, in use, interposed between this floor and the engaged cable in this hole, and in that the strip of the comb is folded against the teeth, the floor of each hole being thus sandwiched between the strip of the comb and the tooth corresponding to this orifice.

Le barreau peut alors être réalisé en laiton sans obérer la tenue du bornier aux courants de courts-circuits, ni sa capacité à évacuer la chaleur.The bar can then be made of brass without limiting the resistance of the terminal block to short-circuit currents, or its ability to evacuate heat.

Il peut être judicieux de prévoir que le plancher de chaque orifice soit plat et que chaque dent du peigne soit elle-même au moins partiellement plate.It may be wise to provide that the floor of each orifice is flat and that each tooth of the comb itself is at least partially flat.

Chaque dent du peigne peut en outre présenter des rebords latéraux destinés à venir en appui contre des parois latérales de l'orifice correspondant, contiguës au plancher de cet orifice.Each tooth of the comb may further have lateral flanges intended to bear against side walls of the corresponding orifice, contiguous to the floor of this orifice.

Il peut encore être judicieux de prévoir que la barrette du peigne présente un tronçon longitudinal dépassant de la rangée de dents, en particulier dans le cas où le bornier comprend un deuxième module de connexion électrique équipotentielle comportant une cage en matériau conducteur et disposée dans le prolongement du barreau du premier module de connexion.It may also be advisable to provide that the bar of the comb has a longitudinal section protruding from the row of teeth, in particular in the case where the terminal block comprises a second equipotential electrical connection module comprising a cage of conductive material and arranged in the extension. of the bar of the first connection module.

En effet, le bornier peut alors comprendre une agrafe élastique enserrant ensemble la cage du deuxième module de connexion et une partie au moins du tronçon longitudinal de la barrette qui dépasse de la rangée de dents du peigne du premier module, les deux modules étant ainsi couplés de façon efficace au plan mécanique, au plan électrique, et au plan thermique.In effect, the terminal block may then comprise an elastic clip gripping together the cage of the second connection module and at least a portion of the longitudinal section of the bar which protrudes from the row of teeth of the comb of the first module, the two modules being thus coupled effectively mechanically, electrically, and thermally.

D'autres caractéristiques et avantages de l'invention ressortiront clairement de la description qui en est faite ci-après, à titre indicatif et nullement limitatif, en référence aux dessins annexés, dans lesquels :

  • la figure 1 est une vue en perspective d'un bornier conforme à un mode de réalisation possible de l'invention;
  • la figure 2 est une vue éclatée en perspective du bornier illustré à la figure 1;
  • la figure 3 est une vue en perspective à échelle agrandie d'un détail du bornier illustré aux figures 1 et 2, et sur lequel se concentrent les principales caractéristiques de l'invention; et
  • la figure 4 est une vue en perspective du détail illustré à la figure 3, observé sous un angle différent.
Other characteristics and advantages of the invention will emerge clearly from the description which is given hereinafter, by way of indication and in no way limitative, with reference to the appended drawings, in which:
  • the figure 1 is a perspective view of a terminal block according to a possible embodiment of the invention;
  • the figure 2 is an exploded perspective view of the terminal block shown in FIG. figure 1 ;
  • the figure 3 is an enlarged perspective view of a detail of the terminal block illustrated in FIGS. Figures 1 and 2 , and on which are concentrated the main features of the invention; and
  • the figure 4 is a perspective view of the detail shown in the figure 3 , observed from a different angle.

Comme annoncé précédemment, l'invention concerne un bornier de connexion électrique dont un exemple non limitatif est illustré aux figures 1 et 2.As previously announced, the invention relates to an electrical connection terminal block, a non-limiting example of which is illustrated in FIGS. Figures 1 and 2 .

Il existe plusieurs types de borniers, à savoir essentiellement des borniers à vis, des borniers à blocage automatique, et des borniers mixtes.There are several types of terminal blocks, namely essentially screw terminal blocks, self-locking terminal blocks, and mixed terminal blocks.

Dans un bornier à vis, tel que décrit par exemple dans le document de brevet FR 2 750 262 précité, le câble électrique est serré au moyen d'une vis.In a screw terminal block, as described for example in the patent document FR 2,750,262 above, the electric cable is tightened by means of a screw.

Dans un bornier à blocage automatique, le câble est serré au moyen d'une lame ressort qui est déplacée élastiquement par le câble lors de l'insertion de ce câble dans un orifice de connexion, et qui, par sa forme en harpon, s'oppose à l'extraction du câble hors de l'orifice.In a self-locking terminal block, the cable is tightened by means of a spring blade which is elastically displaced by the cable when the cable is inserted into a connection hole, and which, by its harpoon shape, opposes the extraction of the cable out of the orifice.

L'invention concerne, à titre principal, les borniers à vis et, par voie de conséquence, également les borniers mixtes, c'est-à-dire les borniers qui comprennent, comme illustré aux figures 1 et 2, un module M1 de bornier à vis et un module M2 de bornier à blocage automatique.The invention relates primarily to the screw terminals and, consequently, also to the terminal blocks the terminal strips which include, as illustrated in Figures 1 and 2 , a module M1 of screw terminal block and a module M2 of terminal block with automatic locking.

Comme le montrent les figures, un bornier conforme à l'invention comprend donc au moins un module M1 de connexion électrique équipotentielle à vis.As shown in the figures, a terminal block according to the invention therefore comprises at least one module M1 equipotential electrical screw connection.

Un tel module M1 comporte traditionnellement un barreau 1 en matériau rigide et conducteur, par exemple en laiton, s'étendant dans une direction longitudinale X et percé d'orifices de connexion 11.Such a module M1 traditionally comprises a bar 1 of rigid and conductive material, for example of brass, extending in a longitudinal direction X and pierced with connection orifices 11.

Les orifices de connexion 11 sont juxtaposés suivant la direction longitudinale X et traversent chacun le barreau 1 suivant une direction transversale perpendiculaire à la direction longitudinale X.The connection ports 11 are juxtaposed in the longitudinal direction X and each pass through the bar 1 in a transverse direction perpendicular to the longitudinal direction X.

Chaque orifice de connexion 11 est équipé d'une vis 12 engagée dans un filetage 120 correspondant, ce filetage étant percé dans le barreau 1 suivant une direction verticale sur les figures 1 et 2, c'est-à-dire suivant une direction perpendiculaire à la fois à la direction longitudinale X du barreau 1 et à la direction transversale des orifices 11.Each connection port 11 is equipped with a screw 12 engaged in a corresponding thread 120, this thread being pierced in the bar 1 in a vertical direction on the Figures 1 and 2 , that is to say in a direction perpendicular both to the longitudinal direction X of the bar 1 and to the transverse direction of the orifices 11.

En regard de chaque filetage 120, l'orifice correspondant 11 présente une paroi 110 formant plancher pour le logement de câble que constitue cet orifice.Opposite each thread 120, the corresponding orifice 11 has a wall 110 forming a floor for the cable housing that constitutes this orifice.

De cette façon, la vis 12 équipant chaque orifice 11 peut, en service, serrer contre le plancher 110 un câble K qui est engagé dans cet orifice 11.In this way, the screw 12 equipping each orifice 11 can, in use, clamp against the floor 110 a cable K which is engaged in this orifice 11.

Le module M1 de connexion à vis qui constitue un bornier conforme à l'invention, ou qui appartient à un tel bornier, comporte en outre un peigne 2 monobloc en cuivre.The module M1 for screw connection which constitutes a terminal block according to the invention, or which belongs to such a terminal block, further comprises a comb 2 monobloc copper.

Ce peigne 2 est essentiellement formé d'une rangée de dents 21 juxtaposées et mutuellement parallèles, et d'une barrette 22 qui relie et qui supporte les dents 21.This comb 2 is essentially formed of a row of teeth 21 juxtaposed and mutually parallel, and a bar 22 which connects and supports the teeth 21.

Par ailleurs, chaque dent 21 du peigne 2 est insérée dans un orifice 11 correspondant du barreau 1 et se trouve en appui sur le plancher 110 de cet orifice 11, très préférablement sur toute la largeur du barreau 1, c'est-à-dire sur toute la longueur de traversée de l'orifice 11.Furthermore, each tooth 21 of the comb 2 is inserted into a corresponding orifice 11 of the bar 1 and is supported on the floor 110 of this orifice 11, very preferably over the entire width of the bar 1, that is to say along the entire length of the orifice 11.

En service, chaque dent 21 engagée dans un orifice 11 est donc interposée entre le plancher 110 de cet orifice et le câble K également engagé dans cet orifice 11.In use, each tooth 21 engaged in an orifice 11 is thus interposed between the floor 110 of this orifice and the cable K also engaged in this orifice 11.

Pour optimiser le contact entre le barreau 1 et le peigne 2, le plancher 110 de chaque orifice 11 est de préférence plat, chaque dent 21 du peigne 2 étant elle-même au moins partiellement plate pour s'appliquer sur le plancher 110.To optimize the contact between the bar 1 and the comb 2, the floor 110 of each orifice 11 is preferably flat, each tooth 21 of the comb 2 itself being at least partially flat to be applied on the floor 110.

En outre, chaque dent 21 du peigne 2 peut présenter des rebords latéraux 211 qui sont destinés à venir en appui contre les parois latérales 111 de l'orifice 11 correspondant, contiguës au plancher 110, de manière à augmenter encore le contact électrique et thermique entre le barreau 1 et le peigne 2, à maintenir le câble sous la vis, et à rigidifier cette dent.In addition, each tooth 21 of the comb 2 may have lateral flanges 211 which are intended to bear against the side walls 111 of the corresponding orifice 11, contiguous to the floor 110, so as to further increase the electrical and thermal contact between the bar 1 and the comb 2, to hold the cable under the screw, and to stiffen this tooth.

Comme le montrent le mieux les figures 2 et 4, la barrette 22 du peigne 2 est avantageusement repliée contre les dents 21, et adopte ainsi une position dans laquelle le plancher 110 de chaque orifice 11 est enserré entre la barrette 22 du peigne 2 et la dent 21 correspondant à cet orifice 11.As best shown by figures 2 and 4 , the bar 22 of the comb 2 is advantageously folded against the teeth 21, and thus adopts a position in which the floor 110 of each orifice 11 is clamped between the bar 22 of the comb 2 and the tooth 21 corresponding to this orifice 11.

Dans le cas où le bornier de l'invention est de type mixte, il comprend, comme illustré aux figures 1 et 2, un module M2 de connexion électrique équipotentielle à blocage automatique, ce deuxième module comportant lui-même une cage 4 en matériau conducteur, par exemple en cuivre, et disposée dans le prolongement du barreau 1 du module de connexion M1 à vis.In the case where the terminal block of the invention is of mixed type, it comprises, as illustrated in FIGS. Figures 1 and 2 , a module M2 of equipotential electrical connection with automatic locking, this second module itself comprising a cage 4 of conductive material, for example copper, and disposed in the extension of the bar 1 of the connection module M1 screw.

De son côté, la barrette 22 du peigne 2 peut être plus longue que la rangée de dents 21, c'est-à-dire présenter un tronçon longitudinal libre 221 dépassant de la rangée de dents 21.For its part, the bar 22 of the comb 2 may be longer than the row of teeth 21, that is to say have a free longitudinal section 221 protruding from the row of teeth 21.

Dans ces conditions, le bornier peut comprendre une agrafe 3 conformée en pince élastique et permettant de relier l'un à l'autre les modules de connexion M1 et M2 à la fois mécaniquement, thermiquement et électriquement.Under these conditions, the terminal block may comprise a clip 3 shaped as an elastic clip and making it possible to connect the connection modules M1 and M2 to each other at the same time mechanically, thermally and electrically.

Pour ce faire, comme le montre une comparaison des figures 2 et 4, l'agrafe enserre ensemble un voile de la cage 4 du module M2 et une partie au moins du tronçon longitudinal 221 de la barrette 22 du module M1.To do this, as shown by a comparison of figures 2 and 4 the staple together encloses a web of the cage 4 of the module M2 and at least a portion of the longitudinal section 221 of the bar 22 of the module M1.

Comme le montre encore la figure 2, le module M2 comporte, outre la cage 4, un ensemble 5 de lames ressorts, et le bornier comprend également un socle support 6 et un capot 7.As shown again figure 2 , the module M2 comprises, in addition to the cage 4, a set 5 of spring blades, and the terminal block also comprises a support base 6 and a cover 7.

Le capot 7 est conçu pour être encliqueté sur le support 6, dans lequel sont logés le barreau 1, le peigne 2, l'agrafe 3, et la cage 4.The cover 7 is designed to be snapped onto the support 6, in which are housed the bar 1, the comb 2, the staple 3, and the cage 4.

Les lames ressorts 5 sont quant à elles logées à l'intérieur de la cage 4, dans laquelle ces lames ont pour fonction de retenir dans la cage 4 des câbles insérés dans des alvéoles 60 du socle 6 et dans cette cage 4 à travers des lumières 70 du capot 7.The leaf springs 5 are themselves housed inside the cage 4, in which these blades have the function of holding in the cage 4 cables inserted into the cells 60 of the base 6 and in this cage 4 through lights 70 of the hood 7.

Claims (7)

  1. Terminal consisting of at least a first equipotential electrical connection module (M1), this first module consisting of a bar (1) in rigid and conductive material extending in a longitudinal direction (X) and drilled with connection (11) openings, these openings (11) being juxtaposed following the longitudinal direction (X) and each one traversing the bar (1) following a transversal direction perpendicular to the longitudinal direction (X), each connecting opening (11) being fitted with a screw (12) inserted into a corresponding thread that is drilled into the bar (1) following a direction that is perpendicular to the longitudinal (11) and transversal directions, and the screw (12) fitted to each opening (11) thus being able to clamp, in practice, a cable (K) inserted into this opening (11) against a wall (110) forming the base of this opening (11), characterized in that the first module (M1) includes furthermore a one-piece comb (2) made of copper. for the most part consisting of a row of teeth (21) juxtaposed parallel to each other and of a stay plate (22) linking and supporting the teeth (210, whilst each tooth of the comb (2) is inserted into a corresponding opening (11) of the bar (1) and resting on the base (11) of this opening (11), this tooth (21) being thus, in practice, positioned between the base (110) and the cable (k) inserted in this opening (11), and whilst the stay plate (22) of the comb (2) is folded back against the teeth (21), the base (110) of each opening (11) being clamped between the stay plate (22) of the comb (2) and the tooth (21) that corresponds to this opening (11).
  2. Terminal following Claim 1, characterised in that the bar (1) is made of brass.
  3. Terminal following any one of the preceding claims, characterised in that the base (11) of each opening (11) is flat and in this case each tooth (21) of the comb (2) is at least partially flat.
  4. Terminal following any one of the preceding claims, characterized in that each tooth (21) of the comb (2) has lateral raised edges (211) designed to be supported by the side walls 11) of the corresponding opening (11), adjacent to the base of this opening (11).
  5. Terminal following any one of the preceding claims, characterized in that the stay plate (22) of the comb (2) has a longitudinal extension extending beyond the row of teeth (21).
  6. Terminal following any one of the preceding claims, characterized in that it includes a second electrical equipotential connection module (M2) composed of a cage (4) made from conductive material and positioned in the extension of the bar (1) of the first connection module (M1).
  7. Terminal following Claims 5 and 6, characterized in that it includes a flexible fastener (3) clamping together the cage (4) of the second connection module (M2) and a part at least of the longitudinal extension (221) of the stay plate (22) which extends beyond the row of teeth (21) of the comb (2) of the first module (M1).
EP09160303A 2008-06-17 2009-05-14 Terminal board with enhanced resistance to short circuits Active EP2136437B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0853988A FR2932614B1 (en) 2008-06-17 2008-06-17 TERMINAL HAS IMPROVED SHORT CIRCUITS

Publications (2)

Publication Number Publication Date
EP2136437A1 EP2136437A1 (en) 2009-12-23
EP2136437B1 true EP2136437B1 (en) 2010-11-17

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EP09160303A Active EP2136437B1 (en) 2008-06-17 2009-05-14 Terminal board with enhanced resistance to short circuits

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EP (1) EP2136437B1 (en)
CN (1) CN101609934B (en)
AT (1) ATE488884T1 (en)
DE (1) DE602009000371D1 (en)
ES (1) ES2356712T3 (en)
FR (1) FR2932614B1 (en)
RU (1) RU2502163C2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201218560A (en) * 2010-10-26 2012-05-01 Switchlab Inc combines a wire terminal and a bridging device, wherein the bridging device comprises a contact article and a flexible component while the terminal is defined with a trough room and a through hole for accepting the bridging device
CN102779872B (en) * 2012-06-07 2014-12-10 江阴万事兴技术有限公司 Solar photovoltaic thin-film junction box
CN110190417B (en) * 2018-11-30 2021-05-14 中航光电科技股份有限公司 Wire connector and battery pack
CN110212322B (en) * 2018-11-30 2021-04-06 中航光电科技股份有限公司 Wire connector
FR3077168A1 (en) * 2019-01-24 2019-07-26 Izyx Systems Electric box
CN111129790B (en) * 2019-12-30 2021-01-12 山东理工大学 Intelligent power distribution terminal with movable extension socket
DE102021106566A1 (en) * 2021-03-17 2022-09-22 Dehn Se Equipotential bonding system and modular system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2750262B1 (en) * 1996-06-21 1998-09-04 Legrand Sa TERMINAL BOARD
US6280253B1 (en) * 1999-04-22 2001-08-28 Visteon Global Technologies, Inc. Method and apparatus for selectively connecting electrical circuits and components
DE20306229U1 (en) * 2003-04-19 2003-06-26 ABB Patent GmbH, 68526 Ladenburg Terminal arrangement for a small distributor and / or a distribution panel of an electrical low-voltage switchgear
FR2894722B1 (en) * 2005-12-09 2009-05-22 Schneider Electric Ind Sas ELECTRICAL CONNECTION TERMINAL AND ELECTRIC CUTTING APPARATUS COMPRISING SUCH A TERMINAL

Also Published As

Publication number Publication date
CN101609934B (en) 2013-06-05
ES2356712T3 (en) 2011-04-12
FR2932614A1 (en) 2009-12-18
RU2009122944A (en) 2010-12-27
ATE488884T1 (en) 2010-12-15
RU2502163C2 (en) 2013-12-20
FR2932614B1 (en) 2010-08-13
CN101609934A (en) 2009-12-23
DE602009000371D1 (en) 2010-12-30
EP2136437A1 (en) 2009-12-23

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