EP2983245B1 - Terminal block for earthing - Google Patents

Terminal block for earthing Download PDF

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Publication number
EP2983245B1
EP2983245B1 EP15177754.7A EP15177754A EP2983245B1 EP 2983245 B1 EP2983245 B1 EP 2983245B1 EP 15177754 A EP15177754 A EP 15177754A EP 2983245 B1 EP2983245 B1 EP 2983245B1
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EP
European Patent Office
Prior art keywords
orifice
tapping
clamping screw
diameter
stirrup
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
EP15177754.7A
Other languages
German (de)
French (fr)
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EP2983245A1 (en
Inventor
Michel Sartorio
Annie REILLE
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.)
Tyco Electronics Service GmbH
Original Assignee
ABB Schweiz AG
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Filing date
Publication date
Application filed by ABB Schweiz AG filed Critical ABB Schweiz AG
Publication of EP2983245A1 publication Critical patent/EP2983245A1/en
Application granted granted Critical
Publication of EP2983245B1 publication Critical patent/EP2983245B1/en
Active legal-status Critical Current
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting
    • H01R9/2691—Clip-on terminal blocks for side-by-side rail- or strip-mounting with ground wire connection to the rail
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00—Coupling parts supported only by co-operation with counterpart
    • H01R31/08—Short-circuiting members for bridging contacts in a counterpart
    • H01R31/085—Short circuiting bus-strips

Definitions

  • the present invention relates to the field of connecting conductors in cabinets or electrical boxes.
  • the present invention relates to a terminal block for grounding and a method of mounting a grounding terminal block on a support rail.
  • first type of terminal block providing the electrical connection between two conductors connected to two terminals of a conductive connection strip of the first type terminal block.
  • connection strip comprises a threaded orifice intended to cooperate with the thread of a connecting shunt intended to provide the electrical connection between the conductive connection strip of the first type terminal block and another conductive connection strip.
  • another adjacent terminal block for example also of the first type.
  • the document FR1472658 discloses a terminal block for grounding comprising: a conductive connection bar comprising a first orifice, a conductive stirrup intended to be mounted on a conductive support rail, said stirrup comprising a second orifice having a thread of a diameter smaller than or equal to at the diameter of the first hole of the connecting bar, a conductive clamping screw arranged to clamp the stirrup on the support rail, the clamping screw comprising: a head having a diameter greater than the diameter of the first orifice of the link bar, a first portion extending from the screw head over a determined length of screw, said first portion having a diameter smaller than the diameter of the first orifice of the connecting bar so as to slide freely in the first orifice, a second portion extending from the first portion to the end of the screw opposite to the screw head, said second portion having a thread of
  • the support rail is electrically connected to the ground.
  • the yoke comprises a threaded orifice, in particular of the same diameter as the threaded orifice of the connecting bar of the first type terminal block.
  • Actuation of the clamping screw makes it possible to grip the support rail between the stirrup and the conductive protection foot and makes it possible to bring the support rail and the link bar into electrical contact via the conductive clamping screw.
  • the terminal strip of the second type of terminal block comprises an orifice.
  • this orifice does not include tapping so as to allow the free passage of the clamping screw through this hole and to freely rotate the clamping screw in this hole when the clamping screw is in contact with the bracket.
  • Both types of terminal blocks therefore each require a specific link strip.
  • the specificity of the link bar implies the establishment of a manufacturing process specific to the envisaged application of a terminal block.
  • the present invention aims to solve all or part of the disadvantages mentioned above.
  • This arrangement makes it possible to use the same link strip for an application in a grounding terminal block or an application in a terminal block providing the electrical connection between two conductors connected to two terminals of the link strip, the tapping of the first hole of the connecting strip then being intended for the connection of a connecting shunt.
  • the length of the first portion is determined so that when the tapping of the second hole of the stirrup cooperates with the thread of the second portion of the clamping screw and the stirrup exerts a support force against the support rail in the direction of the connection then the tapping of the first hole of the connecting bar is opposite the first portion of the clamping screw.
  • the first portion of the clamping screw has a smooth surface.
  • the length of the first portion of the clamping screw is between 0.3 and 10 mm.
  • the stirrup comprises a second orifice having a thread of diameter equal to the diameter of the tapping of the first orifice of the connecting bar.
  • a terminal block 1 for grounding comprises a conductive connection strip 10, a clamping clamp 20 on a conductive support rail 2, a clamping screw 30 and a protective foot 40 conductor.
  • the conductive connection strip 10 comprises a first orifice 11 having a thread of a determined diameter D.
  • the stirrup 20 comprises a second orifice 21 having a thread of diameter D 'less than or equal to the diameter D of the tapping of the first orifice 11 of the connecting bar 10.
  • stirrup 20 comprises hooks 22 intended to come into contact with a lower part 2a of the support rail 2.
  • the protective foot 40 is inserted in a housing 23 of the stirrup 20 and is intended to ensure electrical contact with an upper part 2b of the support rail 2.
  • the protective foot 40 comprises a passage 41 for the clamping screw 30 which ensures the cohesion of the assembly comprising the connecting bar 10, the stirrup 20 and the protective foot 40.
  • clamping screw 30 is intended to pass successively through the first orifice 11 of the connecting bar 10, the passage 41 of the protection foot 40 and the second orifice 21 of the stirrup 20.
  • the clamping screw 30 comprises a head 31 having a diameter greater than the diameter D of the tapping of the first orifice 11 of the connecting bar 10 so that the head can bear on the connecting bar 10.
  • a washer 35 can be inserted between the screw head 31 and the connecting bar 10 in order to protect the connecting bar 10 during the tightening of the clamping screw 30.
  • This washer 35 may also have the function of maintaining the tightening of the screw 30.
  • clamping screw 30 comprises a first portion 32 and a second portion 33.
  • the first portion 32 extends from the screw head 31 over a length of screw l determined.
  • This first portion 32 preferably has a smooth surface.
  • the first portion 32 has a diameter d smaller than the diameter D of the tapping of the first orifice 11 of the connecting bar 10.
  • the second portion 33 extends from the first portion 32 to the end of the screw 30 opposite the screw head 31.
  • the second portion 33 has a thread of a diameter substantially equal to the diameter D of the thread of the second orifice 21 of the stirrup 20.
  • the total length L of the clamping screw 30 is greater than the distance separating the first orifice 11 of the connecting bar 10 and the second orifice 21 of the stirrup 20.
  • the length l of the first portion 32 is determined so that when the tapping of the second orifice 21 of the stirrup 20 cooperates with the threading of the second portion 33 of the clamping screw 30, then the tapping of the first orifice 11 of the connecting bar 10 is opposite the first portion 32 of the clamping screw 30.
  • the user performs a first step of screwing the thread of the second portion 33 of the clamping screw 30 to the thread of the first orifice 11 of the connecting bar 10 until the tapping of the first orifice 11 of the connecting bar 10 is opposite the first portion 32 of the clamping screw 30.
  • the user screws the thread of the second portion 33 of the clamping screw 30 onto the tapping of the second orifice 21 of the stirrup 20.
  • this second step can be performed once the first step is completed or according to a second embodiment can be carried out partly at the same time as the end of the first step.
  • the mounting method can also be realized when the terminal block 1 is not yet mounted on the support rail 2 or when it is already mounted on the support rail 2.
  • the tapping of the first orifice 11 of the connecting bar 10 is intended to cooperate with the thread of a terminal 51 of a connecting shunt 50.
  • the surface of the first portion 32 of the clamping screw is not necessarily smooth but may have all the aspects and all the shapes making it possible to slide freely in translation and in rotation the first portion 32 of the screw in the tapping of the first orifice 11 of the connecting bar 10.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)

Description

La présente invention concerne le domaine du raccordement de conducteurs dans des armoires ou coffrets électriques.The present invention relates to the field of connecting conductors in cabinets or electrical boxes.

Plus particulièrement, la présente invention a pour objet un bloc de jonction pour la mise à la terre ainsi qu'un procédé de montage d'un bloc de jonction de mise à la terre sur un rail support.More particularly, the present invention relates to a terminal block for grounding and a method of mounting a grounding terminal block on a support rail.

Il est connu de disposer d'un premier type de bloc de jonction assurant la liaison électrique entre deux conducteurs connectés à deux bornes d'une barrette de liaison conductrice du bloc de jonction de premier type.It is known to have a first type of terminal block providing the electrical connection between two conductors connected to two terminals of a conductive connection strip of the first type terminal block.

En outre, cette barrette de liaison comprend un orifice taraudé destiné à coopérer avec le filetage d'un shunt de liaison destiné à assurer la liaison électrique entre la barrette de liaison conductrice du bloc de jonction de premier type et une autre barrette de liaison conductrice d'un autre bloc de jonction adjacent, par exemple également de premier type.In addition, this connection strip comprises a threaded orifice intended to cooperate with the thread of a connecting shunt intended to provide the electrical connection between the conductive connection strip of the first type terminal block and another conductive connection strip. another adjacent terminal block, for example also of the first type.

Il est également connu, par exemple du document FR1472658 , de disposer d'un bloc de jonction de deuxième type pour la mise à la terre. En particulier, le document FR1472658 divulgue un bloc de jonction pour la mise à la terre comprenant : une barrette de liaison conductrice comprenant un premier orifice, un étrier conducteur destiné à être monté sur un rail support conducteur, ledit étrier comprenant un deuxième orifice présentant un taraudage de diamètre inférieur ou égal au diamètre du premier orifice de la barrette de liaison, une vis de serrage conductrice agencée pour serrer l'étrier sur le rail support, la vis de serrage comprenant : une tête présentant un diamètre supérieur au diamètre du premier orifice de la barrette de liaison, une première portion s'étendant depuis la tête de vis sur une longueur de vis déterminée, ladite première portion présentant un diamètre inférieur au diamètre du premier orifice de la barrette de liaison de manière à pouvoir coulisser librement dans le premier orifice, une deuxième portion s'étendant depuis la première portion jusqu'à l'extrémité de la vis opposée à la tête de vis, ladite deuxième portion présentant un filetage d'un diamètre sensiblement égal au diamètre du taraudage du deuxième orifice de l'étrier, la longueur de la première portion étant déterminée de manière à ce que lorsque le taraudage du deuxième orifice de l'étrier coopère avec le filetage de la deuxième portion de la vis de serrage alors le premier orifice de la barrette de liaison est en regard de la première portion de la vis de serrage. Un tel bloc de jonction de deuxième type comprend également une barrette de liaison et comprend en plus une vis de serrage, un pied de protection conducteur et un étrier pour le serrage sur un rail support.It is also known, for example from the document FR1472658 , to have a terminal block of the second type for earthing. In particular, the document FR1472658 discloses a terminal block for grounding comprising: a conductive connection bar comprising a first orifice, a conductive stirrup intended to be mounted on a conductive support rail, said stirrup comprising a second orifice having a thread of a diameter smaller than or equal to at the diameter of the first hole of the connecting bar, a conductive clamping screw arranged to clamp the stirrup on the support rail, the clamping screw comprising: a head having a diameter greater than the diameter of the first orifice of the link bar, a first portion extending from the screw head over a determined length of screw, said first portion having a diameter smaller than the diameter of the first orifice of the connecting bar so as to slide freely in the first orifice, a second portion extending from the first portion to the end of the screw opposite to the screw head, said second portion having a thread of a diameter substantially equal to the diameter of the tapping of the second orifice of the stirrup, the length of the first portion being determined so that when the tapping of the second orifice of the stirrup cooperates with the threading the second portion of the clamping screw then the first hole of the connecting bar is opposite the first portion of the clamping screw. Such a second type terminal block also comprises a connecting bar and further comprises a clamping screw, a conductive foot and a stirrup for clamping on a support rail.

Le rail support est relié électriquement à la terre.The support rail is electrically connected to the ground.

En outre, l'étrier comprend un orifice taraudé, notamment du même diamètre que l'orifice taraudé de la barrette de liaison du bloc de jonction de premier type.In addition, the yoke comprises a threaded orifice, in particular of the same diameter as the threaded orifice of the connecting bar of the first type terminal block.

L'actionnement de la vis de serrage permet d'enserrer le rail support entre l'étrier et le pied de protection conducteur et permet d'assurer la mise en contact électrique du rail support, et de la barrette de liaison par l'intermédiaire de la vis de serrage conductrice.Actuation of the clamping screw makes it possible to grip the support rail between the stirrup and the conductive protection foot and makes it possible to bring the support rail and the link bar into electrical contact via the conductive clamping screw.

Tout comme la barrette de liaison du bloc de jonction de premier type, la barrette de liaison du bloc de jonction de deuxième type comprend un orifice.Like the terminal strip of the first type of terminal block, the terminal strip of the second type of terminal block comprises an orifice.

Cependant, cet orifice ne comprend pas de taraudage de manière à permettre le libre passage de la vis de serrage au travers cet orifice et à laisser tourner librement la vis de serrage dans cet orifice lorsque la vis de serrage est en emprise avec l'étrier.However, this orifice does not include tapping so as to allow the free passage of the clamping screw through this hole and to freely rotate the clamping screw in this hole when the clamping screw is in contact with the bracket.

Les deux types de blocs de jonction nécessitent donc chacun une barrette de liaison spécifique.Both types of terminal blocks therefore each require a specific link strip.

La spécificité de la barrette de liaison implique la mise en place d'un procédé de fabrication propre à l'application envisagée d'un bloc de jonction.The specificity of the link bar implies the establishment of a manufacturing process specific to the envisaged application of a terminal block.

La présente invention a pour but de résoudre tout ou partie des inconvénients mentionnés ci-dessus.The present invention aims to solve all or part of the disadvantages mentioned above.

A cet effet, la présente invention a pour objet un bloc de jonction pour la mise à la terre comprenant :

  • une barrette de liaison conductrice comprenant un premier orifice présentant un taraudage d'un diamètre déterminé et destiné à coopérer avec le filetage d'un shunt de liaison,
  • un étrier conducteur destiné à être monté sur un rail support conducteur, ledit étrier comprenant un deuxième orifice présentant un taraudage de diamètre inférieur ou égal au diamètre du taraudage du premier orifice de la barrette de liaison,
  • une vis de serrage conductrice agencée pour serrer l'étrier sur le rail support, la vis de serrage comprenant :
    • une tête présentant un diamètre supérieur au diamètre du taraudage du premier orifice de la barrette de liaison,
    • une première portion s'étendant depuis la tête de vis sur une longueur de vis déterminée, ladite première portion présentant un diamètre inférieur au diamètre du taraudage du premier orifice de la barrette de liaison de manière à pouvoir coulisser librement dans le premier orifice,
    • une deuxième portion s'étendant depuis la première portion jusqu'à l'extrémité de la vis opposée à la tête de vis, ladite deuxième portion présentant un filetage d'un diamètre sensiblement égal au diamètre du taraudage du deuxième orifice de l'étrier,
la longueur de la première portion étant déterminée de manière à ce que lorsque le taraudage du deuxième orifice de l'étrier coopère avec le filetage de la deuxième portion de la vis de serrage alors le taraudage du premier orifice de la barrette de liaison est en regard de la première portion de la vis de serrage.For this purpose, the present invention relates to a terminal block for grounding comprising:
  • a conductive connection strip comprising a first orifice having a thread of a determined diameter and intended to cooperate with the thread of a connecting shunt,
  • a conductive stirrup for mounting on a conductive support rail, said stirrup comprising a second orifice having a thread of diameter less than or equal to the diameter of the thread of the first orifice of the connecting bar,
  • a conductive clamping screw arranged to clamp the bracket on the support rail, the clamping screw comprising:
    • a head having a diameter greater than the diameter of the tapping of the first orifice of the connecting bar,
    • a first portion extending from the screw head over a given screw length, said first portion having a diameter smaller than the diameter of the thread of the first orifice of the connecting bar so as to slide freely in the first orifice,
    • a second portion extending from the first portion to the end of the screw opposite to the screw head, said second portion having a thread of a diameter substantially equal to the diameter of the thread of the second orifice of the caliper,
the length of the first portion being determined so that when the tapping of the second hole of the yoke cooperates with the thread of the second portion of the clamping screw then the tapping of the first hole of the connecting bar is opposite of the first portion of the clamping screw.

Cette disposition permet d'utiliser une même barrette de liaison pour une application dans un bloc de jonction de mise à la terre ou bien une application dans un bloc de jonction assurant la liaison électrique entre deux conducteurs connectés à deux bornes de la barrette de liaison, le taraudage du premier orifice de la barrette de liaison étant alors destiné à la connexion d'un shunt de liaison.This arrangement makes it possible to use the same link strip for an application in a grounding terminal block or an application in a terminal block providing the electrical connection between two conductors connected to two terminals of the link strip, the tapping of the first hole of the connecting strip then being intended for the connection of a connecting shunt.

Selon un aspect de l'invention, la longueur de la première portion est déterminée de manière à ce que lorsque le taraudage du deuxième orifice de l'étrier coopère avec le filetage de la deuxième portion de la vis de serrage et que de l'étrier exerce une force d'appui à l'encontre du rail support en direction de la barrette de liaison alors le taraudage du premier orifice de la barrette de liaison est en regard de la première portion de la vis de serrage.According to one aspect of the invention, the length of the first portion is determined so that when the tapping of the second hole of the stirrup cooperates with the thread of the second portion of the clamping screw and the stirrup exerts a support force against the support rail in the direction of the connection then the tapping of the first hole of the connecting bar is opposite the first portion of the clamping screw.

Selon un aspect de l'invention, la première portion de la vis de serrage présente une surface lisse.According to one aspect of the invention, the first portion of the clamping screw has a smooth surface.

Selon un aspect de l'invention, la longueur de la première portion de la vis de serrage est comprise entre 0,3 et 10 mm.According to one aspect of the invention, the length of the first portion of the clamping screw is between 0.3 and 10 mm.

Selon un aspect de l'invention, l'étrier comprend un deuxième orifice présentant un taraudage de diamètre égal au diamètre du taraudage du premier orifice de la barrette de liaison.According to one aspect of the invention, the stirrup comprises a second orifice having a thread of diameter equal to the diameter of the tapping of the first orifice of the connecting bar.

La présente invention a également pour objet un procédé de montage d'un bloc de jonction de mise à la terre tel que décrit ci-dessus comprenant les étapes suivantes :

  • visser le filetage de la deuxième portion de la vis de serrage sur le taraudage du premier orifice de la barrette de liaison jusqu'à ce que le taraudage du premier orifice de la barrette de liaison soit en regard de la première portion de la vis de serrage,
  • visser le filetage de la deuxième portion de la vis de serrage sur le taraudage du deuxième orifice de l'étrier.
The present invention also relates to a method of mounting a grounding terminal block as described above comprising the following steps:
  • screw the thread of the second portion of the clamping screw onto the tapping of the first hole of the connecting bar until the tapping of the first hole of the connecting strip is opposite the first portion of the clamping screw ,
  • screw the thread of the second portion of the clamping screw onto the thread of the second hole of the caliper.

De toute façon, l'invention sera bien comprise à l'aide de la description qui suit, en référence au dessin schématique annexé représentant, à titre d'exemple non limitatif, un bloc de jonction selon l'invention.

  • La figure 1 est une vue éclatée d'un bloc de jonction selon l'invention.
  • La figure 2 est une vue en coupe du bloc de jonction de la figure 1.
  • La figure 3 est une vue en perspective du bloc de jonction de la figure 1.
  • La figure 4 est une vue en perspective d'une barrette de liaison semblable à celle du bloc de jonction de la figure 1 dans une autre application.
In any case, the invention will be better understood from the description which follows, with reference to the appended schematic drawing showing, by way of non-limiting example, a terminal block according to the invention.
  • The figure 1 is an exploded view of a terminal block according to the invention.
  • The figure 2 is a sectional view of the terminal block of the figure 1 .
  • The figure 3 is a perspective view of the terminal block of the figure 1 .
  • The figure 4 is a perspective view of a connecting bar similar to that of the terminal block of the figure 1 in another application.

Comme illustré à la figure 1, un bloc de jonction 1 pour mise à la terre selon l'invention comprend une barrette de liaison conductrice 10, un étrier 20 de serrage sur un rail support conducteur 2, une vis de serrage 30 et un pied de protection 40 conducteur.As illustrated in figure 1 , a terminal block 1 for grounding according to the invention comprises a conductive connection strip 10, a clamping clamp 20 on a conductive support rail 2, a clamping screw 30 and a protective foot 40 conductor.

La barrette de liaison conductrice 10 comprend un premier orifice 11 présentant un taraudage d'un diamètre D déterminé.The conductive connection strip 10 comprises a first orifice 11 having a thread of a determined diameter D.

L'étrier 20 comprend un deuxième orifice 21 présentant un taraudage de diamètre D' inférieur ou égal au diamètre D du taraudage du premier orifice 11 de la barrette de liaison 10.The stirrup 20 comprises a second orifice 21 having a thread of diameter D 'less than or equal to the diameter D of the tapping of the first orifice 11 of the connecting bar 10.

En outre, comme illustré à la figure 2 l'étrier 20 comprend des crochets 22 destinés à venir au contact d'une partie inférieure 2a du rail support 2.In addition, as illustrated in figure 2 the stirrup 20 comprises hooks 22 intended to come into contact with a lower part 2a of the support rail 2.

Le pied de protection 40 est quant à lui inséré dans un logement 23 de l'étrier 20 et est destiné à assurer le contact électrique avec une partie supérieure 2b du rail support 2.The protective foot 40 is inserted in a housing 23 of the stirrup 20 and is intended to ensure electrical contact with an upper part 2b of the support rail 2.

En outre, le pied de protection 40 comprend un passage 41 pour la vis de serrage 30 qui assure la cohésion de l'ensemble comprenant la barrette de liaison 10, l'étrier 20 et le pied de protection 40.In addition, the protective foot 40 comprises a passage 41 for the clamping screw 30 which ensures the cohesion of the assembly comprising the connecting bar 10, the stirrup 20 and the protective foot 40.

Ainsi, la vis de serrage 30 est destinée à traverser successivement le premier orifice 11 de la barrette de liaison 10, le passage 41 du pied de protection 40 et le deuxième orifice 21 de l'étrier 20.Thus, the clamping screw 30 is intended to pass successively through the first orifice 11 of the connecting bar 10, the passage 41 of the protection foot 40 and the second orifice 21 of the stirrup 20.

La vis de serrage 30 comprend une tête 31 présentant un diamètre supérieur au diamètre D du taraudage du premier orifice 11 de la barrette de liaison10 de manière à ce que la tête puisse prendre appui sur la barrette de liaison 10.The clamping screw 30 comprises a head 31 having a diameter greater than the diameter D of the tapping of the first orifice 11 of the connecting bar 10 so that the head can bear on the connecting bar 10.

Comme illustré aux figures 1 à 3, une rondelle 35 peut être intercalée entre la tête de vis 31 et la barrette de liaison 10 afin de protéger la barrette de liaison 10 lors du serrage de la vis de serrage 30.As illustrated in Figures 1 to 3 , a washer 35 can be inserted between the screw head 31 and the connecting bar 10 in order to protect the connecting bar 10 during the tightening of the clamping screw 30.

Cette rondelle 35 peut également avoir pour fonction de maintenir le serrage de la vis 30.This washer 35 may also have the function of maintaining the tightening of the screw 30.

En outre, la vis de serrage 30 comprend une première portion 32 et une deuxième portion 33.In addition, the clamping screw 30 comprises a first portion 32 and a second portion 33.

La première portion 32 s'étend depuis la tête de vis 31 sur une longueur de vis l déterminée.The first portion 32 extends from the screw head 31 over a length of screw l determined.

Cette première portion 32 présente de préférence une surface lisse.This first portion 32 preferably has a smooth surface.

La première portion 32 présente un diamètre d inférieur au diamètre D du taraudage du premier orifice 11 de la barrette de liaison 10.The first portion 32 has a diameter d smaller than the diameter D of the tapping of the first orifice 11 of the connecting bar 10.

La deuxième portion 33 s'étend depuis la première portion 32 jusqu'à l'extrémité de la vis 30 opposée à la tête de vis 31.The second portion 33 extends from the first portion 32 to the end of the screw 30 opposite the screw head 31.

La deuxième portion 33 présente un filetage d'un diamètre d' sensiblement égal au diamètre D du taraudage du deuxième orifice 21 de l'étrier 20.The second portion 33 has a thread of a diameter substantially equal to the diameter D of the thread of the second orifice 21 of the stirrup 20.

La longueur totale L de la vis de serrage 30 est supérieure à la distance séparant le premier orifice 11 de la barrette de liaison 10 et le deuxième orifice 21 de l'étrier 20.The total length L of the clamping screw 30 is greater than the distance separating the first orifice 11 of the connecting bar 10 and the second orifice 21 of the stirrup 20.

La longueur l de la première portion 32 est déterminée de manière à ce que lorsque le taraudage du deuxième orifice 21 de l'étrier 20 coopère avec le filetage de la deuxième portion 33 de la vis de serrage 30 alors le taraudage du premier orifice 11 de la barrette de liaison 10 est en regard de la première portion 32 de la vis de serrage 30.The length l of the first portion 32 is determined so that when the tapping of the second orifice 21 of the stirrup 20 cooperates with the threading of the second portion 33 of the clamping screw 30, then the tapping of the first orifice 11 of the connecting bar 10 is opposite the first portion 32 of the clamping screw 30.

Ainsi, au cours d'un procédé de montage d'un bloc de jonction 1 de mise à la terre, l'utilisateur réalise une première étape consistant à visser le filetage de la deuxième portion 33 de la vis de serrage 30 sur le taraudage du premier orifice 11 de la barrette de liaison 10 jusqu'à ce que le taraudage du premier orifice 11 de la barrette de liaison 10 soit en regard de la première portion 32 de la vis de serrage 30.Thus, during a method of mounting a grounding terminal block 1, the user performs a first step of screwing the thread of the second portion 33 of the clamping screw 30 to the thread of the first orifice 11 of the connecting bar 10 until the tapping of the first orifice 11 of the connecting bar 10 is opposite the first portion 32 of the clamping screw 30.

Dans une deuxième étape, l'utilisateur visse le filetage de la deuxième portion 33 de la vis de serrage 30 sur le taraudage du deuxième orifice 21 de l'étrier 20.In a second step, the user screws the thread of the second portion 33 of the clamping screw 30 onto the tapping of the second orifice 21 of the stirrup 20.

Selon un premier mode de réalisation de l'invention, cette deuxième étape peut être réalisée une fois la première étape terminée ou bien selon un deuxième mode de réalisation peut être réalisée en partie en même temps que la fin de la première étape.According to a first embodiment of the invention, this second step can be performed once the first step is completed or according to a second embodiment can be carried out partly at the same time as the end of the first step.

En effet, il est possible que le filetage de la deuxième portion 33 de la vis de serrage 30 coopère avec le taraudage du premier orifice 11 de la barrette de liaison 10 lorsque ce même filetage de la deuxième portion 33 de la vis de serrage 30 coopère avec le taraudage du deuxième orifice 21 de l'étrier 20.Indeed, it is possible that the threading of the second portion 33 of the clamping screw 30 cooperates with the tapping of the first orifice 11 of the connecting strip 10 when the same threading of the second portion 33 of the clamping screw 30 cooperates with the tapping of the second orifice 21 of the stirrup 20.

Cependant, cette coopération du filetage de la deuxième portion 32 de la vis de serrage 30 avec à la fois le taraudage du premier orifice 11 de la barrette de liaison 10 et le taraudage du deuxième orifice 21 de l'étrier 20 n'est possible que tant que le mouvement de translation de l'étrier 20 sur la vis de serrage est libre.However, this cooperation of the threading of the second portion 32 of the clamping screw 30 with both the tapping of the first orifice 11 of the connecting bar 10 and the tapping of the second orifice 21 of the stirrup 20 is only possible. as the translation movement of the stirrup 20 on the clamping screw is free.

Ce mouvement de translation n'est plus libre à partir du moment où l'étrier 20 exerce une force d'appui à l'encontre du rail support 2 en direction de la barrette de liaison 10.This translational movement is no longer free from the moment when the stirrup 20 exerts a bearing force against the support rail 2 in the direction of the connecting bar 10.

Par conséquent, dans ce deuxième mode de réalisation lorsque l'étrier 20 exerce une force d'appui à l'encontre du rail support 2 alors la première portion 32 de la vis de serrage 30 doit se trouver en regard du premier orifice 11 de la barrette de liaison 10.Therefore, in this second embodiment when the stirrup 20 exerts a bearing force against the support rail 2, then the first portion 32 of the clamping screw 30 must be opposite the first orifice 11 of the link bar 10.

Le procédé de montage peut aussi bien être réalisé lorsque le bloc de jonction 1 n'est pas encore monté sur le rail support 2 ou bien lorsqu'il est déjà monté sur le rail support 2.The mounting method can also be realized when the terminal block 1 is not yet mounted on the support rail 2 or when it is already mounted on the support rail 2.

Enfin, comme illustré à la figure 4, il est possible d'utiliser une barrette de liaison 10 identique à celle utilisée dans le bloc de jonction 1 de mise à la terre dans un bloc de jonction de liaison.Finally, as illustrated in figure 4 it is possible to use a link strip 10 identical to that used in the grounding terminal block 1 in a linkage terminal block.

Dans ce cas, le taraudage du premier orifice 11 de la barrette de liaison 10 est destiné à coopérer avec le filetage d'une borne 51 d'un shunt de liaison 50.In this case, the tapping of the first orifice 11 of the connecting bar 10 is intended to cooperate with the thread of a terminal 51 of a connecting shunt 50.

Bien que l'invention ait été décrite en liaison avec des exemples particuliers de réalisation, il est bien évident qu'elle n'y est nullement limitée et qu'elle comprend tous les équivalents techniques des moyens décrits ainsi que leurs combinaisons.Although the invention has been described in connection with particular embodiments, it is obvious that it is not limited thereto and that it includes all the technical equivalents of the means described and their combinations.

C'est ainsi que la surface de la première portion 32 de la vis de serrage n'est pas forcément lisse mais peut présenter tous les aspects et toutes les formes permettant de faire coulisser librement en translation et en rotation la première portion 32 de la vis de serrage 30 dans le taraudage du premier orifice 11 de la barrette de liaison 10.Thus, the surface of the first portion 32 of the clamping screw is not necessarily smooth but may have all the aspects and all the shapes making it possible to slide freely in translation and in rotation the first portion 32 of the screw in the tapping of the first orifice 11 of the connecting bar 10.

Claims (6)

  1. A junction block (1) for grounding comprising:
    - a conductive connection bar (10) comprising a first orifice (11) having a tapping with a determined diameter (D) and intended to cooperate with the threading of a connection shunt,
    - a conductive stirrup (20) intended to be mounted on a conductive support rail (2), said stirrup (20) comprising a second orifice (21) having a tapping with a diameter (D') smaller than or equal to the diameter (D) of the tapping of the first orifice (11) of the connection bar (10),
    - a conductive clamping screw (30) arranged to clamp the stirrup (20) on the support rail (2), the clamping screw (30) comprising:
    - a head (31) having a diameter greater than the diameter (D) of the tapping of the first orifice (11) of the connection bar (10),
    - a first portion (32) extending from the screw head (31) over a determined screw length (I), said first portion (32) having a diameter (d) smaller than the diameter (D) of the tapping of the first orifice (11) of the connection bar (10) so as to be able to slide freely in the first orifice (11),
    - a second portion (33) extending from the first portion (32) up to the end of the screw (30) opposite to the screw head (31), said second portion (33) having a threading with a diameter (d') substantially equal to the diameter (D') of the tapping of the second orifice (21) of the stirrup (20), the length (1) of the first portion (32) being determined so that when the
    tapping of the second orifice (21) of the stirrup (20) cooperates with the threading of the second portion (33) of the clamping screw (30) then the tapping of the first orifice (11) of the connection bar (10) faces the first portion (32) of the clamping screw (30).
  2. The junction block (1) according to claim 1, wherein the length (I) of the first portion (32) is determined so that when the tapping of the second orifice (21) of the stirrup (20) cooperates with the threading of the second portion (33) of the clamping screw (30) and the stirrup (20) exerts a bearing force against the support rail (2) in the direction of the connection bar (10) then the tapping of the first orifice (11) of the connection bar (10) faces the first portion (32) of the clamping screw (30).
  3. The junction block (1) according to any of claims 1 or 2, wherein the first portion (32) of the clamping screw (30) has a smooth surface.
  4. The junction block (1) according to any of claims 1 to 3, wherein the length of the first portion (32) of the clamping screw (30) is comprised between 0.3 and 10 mm.
  5. The junction block according to any of the preceding claims, wherein said stirrup (20) comprising a second orifice (21) having a tapping with a diameter (D') equal to the diameter (D) of the tapping of the first orifice (11) of the connection bar (10).
  6. A method of mounting a grounding junction block (1) according to claim 5 comprising the following steps of:
    - screwing the threading of the second portion (33) of the clamping screw (30) on the tapping of the first orifice (11) of the connection bar (10) until the tapping of the first orifice (11) of the connection bar (10) faces the first portion (32) of the clamping screw (30),
    - screwing the threading of the second portion (33) of the clamping screw (30) on the tapping of the second orifice (21) of the stirrup (20).
EP15177754.7A 2014-08-04 2015-07-21 Terminal block for earthing Active EP2983245B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1457552A FR3024599B1 (en) 2014-08-04 2014-08-04 JUNCTION BLOCK FOR GROUNDING

Publications (2)

Publication Number Publication Date
EP2983245A1 EP2983245A1 (en) 2016-02-10
EP2983245B1 true EP2983245B1 (en) 2018-06-27

Family

ID=51688299

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15177754.7A Active EP2983245B1 (en) 2014-08-04 2015-07-21 Terminal block for earthing

Country Status (3)

Country Link
EP (1) EP2983245B1 (en)
CN (1) CN105337053B (en)
FR (1) FR3024599B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3054403B1 (en) * 2016-07-22 2019-10-18 Saint-Gobain Glass France GLAZING WITH ELECTRICALLY CONDUCTIVE ELEMENT AND ELECTRICAL CONNECTION
EP3490073B1 (en) * 2017-11-22 2020-08-12 TE Connectivity Services GmbH Device for electrical connection to earth
DE102018107839A1 (en) 2018-04-03 2019-10-10 Phoenix Contact Gmbh & Co. Kg Connecting device for connecting a conductor of a cable to a mounting rail for their electrical connection with each other
CN113260209B (en) * 2021-06-21 2024-07-12 天津瑞能电气有限公司 Portable assembly structure of earth connection

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Publication number Priority date Publication date Assignee Title
FR1472658A (en) * 1966-03-22 1967-03-10 Woertz Oskar Device for the removable fixing of objects forming part of an electrical installation, on an asymmetric profile rail or strip
DE2352432B2 (en) * 1973-10-19 1979-06-21 Fa. Georg Schlegel, 7941 Duermentingen Switchgear terminal block for protective conductor
FR2593647B1 (en) * 1986-01-29 1988-03-18 Legrand Sa JUNCTION BLOCK TO BE REPORTED ON A PROFILE.
DE3835600A1 (en) * 1988-10-19 1990-05-03 Wieland Elektrische Industrie UNIVERSAL MOUNTING FOOT FOR HAT AND G RAILS
DE29914290U1 (en) * 1999-08-14 2000-12-21 Weidmüller Interface GmbH & Co, 32760 Detmold Conductor connection for a clamp that can be placed on a top-hat rail
WO2004055954A1 (en) * 2002-12-16 2004-07-01 Mitsubishi Denki Kabushiki Kaisha Insulation bus system and insulation unit coupling method
DE102007013536B3 (en) * 2007-03-18 2008-10-02 Phoenix Contact Gmbh & Co. Kg PE connection for plug connectors
US7892022B2 (en) * 2009-02-06 2011-02-22 Tyco Electronics Corporation Jumper connector for a lighting assembly
CN203026196U (en) * 2012-12-27 2013-06-26 永铭富机电有限公司 Copper bus bar with improved structure

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Also Published As

Publication number Publication date
FR3024599B1 (en) 2016-08-05
EP2983245A1 (en) 2016-02-10
CN105337053A (en) 2016-02-17
CN105337053B (en) 2019-07-23
FR3024599A1 (en) 2016-02-05

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