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EP3109943B1 - Electric connection device for an electrical appliance - Google Patents

Electric connection device for an electrical appliance Download PDF

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Publication number
EP3109943B1
EP3109943B1 EP15173957.0A EP15173957A EP3109943B1 EP 3109943 B1 EP3109943 B1 EP 3109943B1 EP 15173957 A EP15173957 A EP 15173957A EP 3109943 B1 EP3109943 B1 EP 3109943B1
Authority
EP
European Patent Office
Prior art keywords
electrical
electrical connection
contact
section
connection device
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
EP15173957.0A
Other languages
German (de)
French (fr)
Other versions
EP3109943A1 (en
EP3109943B8 (en
Inventor
Geoffrey Moine
Fabien Gillier
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
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 ABB Schweiz AG filed Critical ABB Schweiz AG
Priority to EP15173957.0A priority Critical patent/EP3109943B8/en
Publication of EP3109943A1 publication Critical patent/EP3109943A1/en
Publication of EP3109943B1 publication Critical patent/EP3109943B1/en
Application granted granted Critical
Publication of EP3109943B8 publication Critical patent/EP3109943B8/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
    • 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
    • H01R4/4848—Busbar integrally formed with the 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
    • H01R11/09—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 being identical
    • 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
    • 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

Definitions

  • the present invention relates to an electrical connection device for an electrical appliance.
  • the electrical apparatus may for example be a terminal block.
  • link strips such as those described in the document DE 198 10 310 C1 comprise a conductive portion for the passage of an electric current, a cooperative location for making electrical contact with the electrical conductor, and a retaining member for holding the electrical conductor in position.
  • the conductive part of the connecting strip comprises a conductive material and the retaining element an elastic material allowing easy positioning of the electrical conductor.
  • the present invention aims to solve all or some of the disadvantages mentioned above.
  • the present invention relates to an electrical connection device for an electrical appliance according to claim 1.
  • the disposition of the retaining portion in the retaining position keeps the conductive portion in the connecting position.
  • the retaining portion is an extension of the body having a return loop so that the locking portion extends transversely to the main direction.
  • the body has a blade shape and a portion of this blade, the retaining portion serves to maintain the position of the conductive portion. No part other than the body is therefore necessary for maintaining the connecting position of the conductive portion.
  • the longitudinal conductive layer further comprises a portion in the retaining portion.
  • a retaining portion comprising at least partially a flexible layer and a conductive layer.
  • This arrangement facilitates the manufacture of the electrical connection device because it is possible to provide at least a partial superposition of the two layers and the formation of the device for generating the contact portion and the retaining portion from the base plate.
  • the body comprises a longitudinal flexible layer of the blade made of a material capable of being elastically deformed, said flexible layer comprising a portion included in the retaining portion and an adjoining portion included in the rest of the body.
  • the body comprises a deformable shape memory layer extending longitudinally partially in the retaining portion and partially in the rest of the body.
  • the body comprises several layers having defined mechanical and conductivity properties.
  • the retaining portion appears as an extension of the body to maintain the conductive portion in the connecting position.
  • the electrical connection device as described here allows, with its simple structure, both a position retention and a good flow of current when the conductive portion is in the connecting position.
  • the body comprises a contact portion in which is formed the electrical contact location, the electrical contact portion comprising a longitudinal conductive layer of the blade of a conductive material adapted to conduct an electric current.
  • each layer being a thickness of the blade but not necessarily extending over the entire length of the blade.
  • the purpose of the conductive layer is to allow the flow of current.
  • the electrical apparatus is a terminal block.
  • the body is a single piece. This arrangement makes it possible to manufacture the connecting device from one and the same piece in the shape of a blade.
  • the blade shape of the body saves material during manufacture since it is easy to provide a large number of blades in a base plate by limiting material falls.
  • the material capable of being elastically deformed has a Young's modulus of between 100 MPa and 300 MPa, preferably between 150 MPa and 250 MPa and in particular between 200 MPa and 220 MPa.
  • the electrically deformable material comprises stainless steel or a component having similar characteristics in terms of elastic deformation.
  • the conductive material has an electrical conductivity of between 20 ⁇ 10 6 Sm-1 and 70 ⁇ 10 6 Sm-1 and preferably between 30 ⁇ 10 6 Sm-1 and 65 ⁇ 10 6 Sm-1. 1 and in particular between 35 ⁇ 10 6 Sm-1 and 62 ⁇ 10 6 Sm-1.
  • the material capable of being elastically deformed of the flexible layer has an electrical conductivity of between 0 and 10% of that of said conductive material, preferably between 0.5 and 5%, and in particular between 1 and 5%. and 3%.
  • the conductive material has a Young's modulus of between 60,000 MPa and 180,000 MPa, preferably between 90,000 MPa and 150,000 MPa, and in particular between 110,000 MPa and 130,000 MPa.
  • the conductive material comprises copper, aluminum or a material having similar characteristics or the same order of magnitude in terms of electrical conductivity.
  • the contact portion further comprises a longitudinal contact layer of the blade in a contact material adapted to cooperate electrically by contact with the conductive portion of the electrical conductor in the connecting position.
  • the role of the contact layer is to establish sufficient contact with the conductive portion in the connecting position.
  • the contact material has a ductile cooperation surface so as to fit at least one outer surface portion of the conductive portion to allow the passage of a current while avoiding false contacts.
  • the contact material comprises tin or any other material having similar characteristics or the same order of magnitude in terms of electrical conductivity and ductility.
  • the contact layer is obtained by a tinning process on at least a portion of the conductive layer.
  • the conductive layer has the role of conducting the electric current from the electrical conductor.
  • the conductive material is arranged to limit losses in line.
  • the contact layer and the conductive layer may consist of a copper layer on which is made a tinning.
  • the electrical contact location has a cooperation surface arranged to cooperate with the conductive portion of the electrical conductor, said cooperation surface being transverse to the main direction and formed in the contact layer.
  • the electrical contact location is formed in the body and obtained by a main direction transverse cut, the cut generating the transverse cooperation surface which corresponds to a cross section of the contact layer.
  • the through opening is obtained by drilling or punching in the body, the transverse cooperation surface of the contact layer being generated by said drilling.
  • the contact portion has a portion extending substantially in the main direction and a portion extending substantially transversely to the main direction.
  • said substantially transversely extending portion is obtained at least partially from an extension of the folded body and / or corresponds to an addition of material attached to the blade forming the body.
  • the substantially transversely extending portion is obtained from a partial cut in the body, the partially cut portion being then disposed transversely to the main direction by folding.
  • the substantially transversely extending portion comprises a portion extending substantially in a plane normal to the main direction and / or at least one other portion extending transversely to said normal plane.
  • the transversely extending portion comprises four portions extending substantially in extension of the transverse contour of the opening.
  • the retaining portion is arranged to be disposed in a retracted position in which the conductive portion of the electrical conductor is adapted to be disposed in the connecting position and removed from the connecting position.
  • the mobility of the retaining portion between the retaining position and the retracted position makes it possible to unite and alternatively to easily remove the electrical conductor from the electrical connection device.
  • the retaining portion is at least partly arranged to be elastically deformed between the retaining portion and the retracted position.
  • the retaining portion is shape memory.
  • the retaining portion is arranged to impose a stress in the main direction directed to the electrical contact location in the absence of external stress to deform.
  • the retaining portion is disposed in a disconnected position in the absence of bias and when the conductive portion does not cooperate with the electrical contact location.
  • At least a portion of the retaining portion is in contact with a stop in the body in the disconnected position.
  • said stop is at least partially confused with the electrical contact location.
  • the retaining portion is fixed relative to the rest of the body by coming into contact against the stop. A user can then dispose the retaining portion in the retracted position for the disposition of the conductive portion.
  • the retaining portion When the user releases the retaining portion, the latter is positioned in the retaining position and imposes a constraint in the main direction to the conductive portion. The conductive portion is thus maintained in the connecting position.
  • At least a part of the body is obtained by rolling, clinching, electrical welding and / or mechanical fixing, in particular the contact portion and / or the retaining portion.
  • the body comprises several layers
  • these layers are assembled by rolling.
  • the manufacturing process of the body is simple: it consists of having different layers relative to each other, then to assemble these layers, by rolling or clinching for example, and to achieve the through opening.
  • At least a part of the body comprises an assembly of two opposite outer contact layers, a central flexible layer and two intermediate conductive layers.
  • At least a portion of the body comprises an assembly of an outer contact layer, an opposite outer flexible layer and an intermediate conductive layer.
  • At least a part of the body is made of a single material able to be elastically deformed and to conduct the current.
  • a surface layer for improving the electrical contact is affixed to said material.
  • said material undergoes a surface treatment to achieve the deposition of the surface layer.
  • the contact portion and the retaining portion consist of an assembly of layers having identical longitudinal dimensions.
  • the thicknesses of the layers may be different, their lengths and their widths being identical.
  • This provision aims to simplify the management of parts during manufacture, assembling the layers being easy by their dimensional correspondence.
  • the retaining portion consists of a layer portion of material capable of being elastically deformed.
  • the retaining portion is an extension of the body comprising only this portion of the flexible layer. This arrangement makes it possible to limit the quantities of other materials than that able to be deformed elastically for the manufacture of the body.
  • the retaining portion is obtained by folding the blade forming the body.
  • the folding of the blade is to be considered as a simple manufacturing step. This manufacturing step can be repeated by a machine producing a large number of parts.
  • the electrical connection device thus has a simple structure because it can be obtained from a blade in which a through opening has been formed and an end folded to form a loop.
  • the retaining portion has at least partly longitudinally curved sections.
  • the curvature of the retaining portion has the effect of imposing a low stress on the rest of the body.
  • the curved shape allows easy passage between different positions. The loop in together is then deformed which distributes the efforts.
  • the present invention also relates to an electrical connection system for electrical apparatus comprising at least one electrical connection device as described above.
  • the electrical connection system has a symmetry with respect to a plane transverse to the main direction.
  • the electrical connection system is arranged to cooperate with an electrical appliance.
  • the electrical connection system has a housing arranged to establish an electrical connection with a conductive outer element. This housing is also called "shunt housing”.
  • the electrical connection system for electrical apparatus as described above, comprises two electrical connection devices whose bodies are in one piece or contiguous.
  • said two bodies in one piece comprise a common portion extending longitudinally.
  • said two bodies are contiguous and each have a longitudinal and / or transverse cooperation surface.
  • the electrical connection system is a connecting bar of an electrical appliance.
  • an electrical connection system 1 is arranged to establish an electrical connection with at least one conductive portion 3 of an electrical conductor 5.
  • the electrical connection system 1 is arranged to be arranged in an electrical appliance, for example a terminal block, and its function is to maintain electrical contact with the electrical conductor 5.
  • the electrical connection system 1 comprises at least one electrical connection device 7 intended to cooperate with a conductive part 3 of an electrical conductor 5. Examples of electrical connection devices 7 are presented to the Figures 8 to 11 and also to the other figures as parts of the electrical connection system 1.
  • the electrical connection device 7 comprises a body 9 forming a blade 11.
  • the body 9 is obtained from a flat base plate having several overlapping layers at least partially and fixed together by rolling.
  • the body 9 comprises a flexible layer 13 extending longitudinally with respect to the blade 11.
  • the flexible layer 13 comprises a material capable of being elastically deformed, such as stainless steel with a Young's modulus of between 200 MPa and 220 MPa. .
  • the body 9 also comprises at least one conductive layer 15 extending longitudinally with respect to the blade 11.
  • the conductive layer 15 comprises a conductive material capable of conducting an electric current such as copper with an electrical conductivity of between 35 ⁇ 10 6 Sm 1 and 62 ⁇ 10 6 Sm -1 and a Young's modulus of between 90,000 and 150,000 MPa.
  • Stainless steel has an electrical conductivity of the order of 2% of that of the copper used.
  • the body 9 further comprises at least one contact layer 17 extending longitudinally with respect to the blade 11.
  • the contact layer 17 comprises a contact material able to cooperate electrically by contact, that is to say ductile and adapted to conform to a complementary surface by deforming to make a reliable electrical contact, that is to say without false contact.
  • the contact material is, for example, tin.
  • This layer of tin can be deposited on a copper layer by tinning.
  • a first variant has two opposite external contact layers 17, a central flexible layer 13 and two intermediate conductive layers.
  • the layers are the same, the flexible layer 13 being extended more longitudinally than the others.
  • a third variant has an outer contact layer 17, an opposite outer flexible layer 13 and an intermediate conductive layer 15.
  • Figures 1 to 3 it is possible to provide only a single layer 19 made of a material that is both conductive and flexible and that is covered with a contact layer 17, for example by tinning.
  • each electrical connection device 7 comprises a retaining portion 21 arranged to maintain in the connecting position the corresponding conductive portion 3.
  • the retaining portion 21 comprises a base portion 21a in the extension of the remainder of the body 9 and extending substantially in the main direction 23 of extension of the body.
  • the retaining portion 21 also comprises a locking portion 21b arranged to hold the conductive portion 3 in position by contact by imposing a stress 25 along the main direction 23.
  • the locking portion 21b extends transversely to the main direction 23 while maintaining the connecting position of the conductive portion. It is said that the retaining portion 21 is in the retaining position as illustrated in FIGS. figures 1 and 4 to 14 .
  • the retaining portion 21 further comprises an intermediate portion 21c linking the base portion 21a and the locking portion 21b.
  • the intermediate portion 21c has a longitudinally curved shape.
  • This curved shape distributes the forces generated on the body 9 by the displacement of the retaining portion 21. Indeed, it is possible to move the retaining portion 21 because it always comprises at least a portion of a flexible layer 13 which gives it an elastic character.
  • the body 9 has a through opening 27 extending transversely to the main direction 23.
  • the through opening 27 is formed in a contact portion 29 of the body 9 adjacent to the retaining portion 21.
  • the contact portion 29 has an electrical contact location 31 which corresponds at least in part to a transverse contour of the through opening 27.
  • the through opening 27 generates in each contact layer 17 a transverse cooperation surface 33 which is adapted to cooperate electrically with the conductive portion 3 in the connecting position.
  • the contact portion 29 may have an extension 35.
  • the extension 35 corresponds to an attached conductive element extending transversely to the main direction 23 and to the figure 9 the extension 35 corresponds to four elements extending transversely to the main direction 35 and in extension of the transverse contour of the through opening 27.
  • the retaining portion 21 is in the retaining position. Since the retaining portion 21 has a certain elasticity, it is possible to move it to a retracted position (not shown) in which it is possible to remove the conductive portion 3.
  • the retaining portion 21 is folded into the retracted position so as to provide a free space for insertion or withdrawal into the through opening 27.
  • the retaining portion 21 extends in the manner of a leaf spring and comes into contact with a stop 37 which corresponds at least partially to the electrical contact location 31.
  • the retaining portion 21 is fixed relative to the remainder of the body 9 and is able to be displaced for the establishment of a conductive portion 3 of an electrical conductor 5.
  • the service life of the retaining portion 21 is thus increased by minimizing the local wear of a more stressed part than the rest.
  • the body 9 may have a housing 39 to be electrically connected to an external element. It may be for example a housing 39 for a bridge between two systems 1 arranged in parallel in an electrical device.
  • two devices 7 of the same system 1 may be contiguous or having a common area extending along the main direction 41 or transversely 43.
  • This arrangement makes it possible to provide electrical connection systems 1 comprising more than two connecting devices 7, which allows a saving of space in the electrical apparatus.
  • the electrical connection system 1 can correspond to a link strip of a terminal block.

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  • Coupling Device And Connection With Printed Circuit (AREA)

Description

La présente invention concerne un dispositif de liaison électrique pour un appareil électrique.The present invention relates to an electrical connection device for an electrical appliance.

Il est connu d'utiliser des dispositifs de liaison électrique pour appareil électrique de type barrette de liaison pour raccorder électriquement au moins un conducteur électrique l'appareil électrique. L'appareil électrique peut par exemple être un bloc de jonction.It is known to use electric connection devices for electric apparatus of the connecting strip type for electrically connecting at least one electrical conductor to the electrical apparatus. The electrical apparatus may for example be a terminal block.

Ces barrettes de liaison, comme par exemple celles décrites dans le document DE 198 10 310 C1 comprennent une partie conductrice pour le passage d'un courant électrique, un emplacement de coopération pour établir un contact électrique avec le conducteur électrique et un élément de retenue pour maintenir le conducteur électrique en position.These link strips, such as those described in the document DE 198 10 310 C1 comprise a conductive portion for the passage of an electric current, a cooperative location for making electrical contact with the electrical conductor, and a retaining member for holding the electrical conductor in position.

La partie conductrice de la barrette de liaison comprend un matériau conducteur et l'élément de retenue un matériau élastique permettant une mise en position aisée du conducteur électrique.The conductive part of the connecting strip comprises a conductive material and the retaining element an elastic material allowing easy positioning of the electrical conductor.

La coopération entre ces deux pièces, la partie conductrice et l'élément de retenue, est un élément important tant pour l'efficacité de serrage et la facilité de retrait du conducteur électrique que pour la facilité de fabrication et de montage du dispositif de liaison électrique.The cooperation between these two parts, the conductive part and the retaining element, is an important element both for the clamping efficiency and the ease of removal of the electrical conductor for the ease of manufacture and assembly of the electrical connection device. .

Il apparait ainsi que ces pièces doivent présenter des éléments de coopération pour être montées ensemble et pour que la portion de retenue puisse être déplacée de manière fiable sur un nombre de cycles important pour augmenter la longévité du dispositif.It thus appears that these parts must have elements of cooperation to be mounted together and that the retaining portion can reliably be moved over a significant number of cycles to increase the longevity of the device.

La simplification de la conception du dispositif de liaison électrique dans une optique de diminution du coût de revient et le fait de disposer d'un dispositif fiable et facile d'utilisation paraissent ainsi contradictoires.The simplification of the design of the electrical connection device for the purpose of reducing the cost price and the fact of having a reliable and easy to use device thus appear contradictory.

La présente invention vise à résoudre tout ou partie des inconvénients mentionnés ci-dessus.The present invention aims to solve all or some of the disadvantages mentioned above.

A cet effet, la présente invention concerne un dispositif de liaison électrique pour un appareil électrique selon la revendication 1.For this purpose, the present invention relates to an electrical connection device for an electrical appliance according to claim 1.

La disposition de la portion de retenue en position de retenue maintient la portion conductrice en position de liaison.The disposition of the retaining portion in the retaining position keeps the conductive portion in the connecting position.

La portion de retenue est une extension du corps présentant une boucle de retour pour que la partie de blocage s'étende transversalement à la direction principale.The retaining portion is an extension of the body having a return loop so that the locking portion extends transversely to the main direction.

Il apparait également que la fabrication du dispositif de liaison est aisée : le corps présente une forme de lame et une portion de cette lame, la portion de retenue a pour fonction le maintien en position de la portion conductrice. Aucune pièce autre que le corps n'est donc nécessaire pour le maintien en position de liaison de la portion conductrice.It also appears that the manufacture of the connecting device is easy: the body has a blade shape and a portion of this blade, the retaining portion serves to maintain the position of the conductive portion. No part other than the body is therefore necessary for maintaining the connecting position of the conductive portion.

La couche conductrice longitudinale comprend en outre une partie dans la portion de retenue. Dans cette configuration on obtient une portion de retenue comprenant au moins partiellement une couche flexible et une couche conductrice.The longitudinal conductive layer further comprises a portion in the retaining portion. In this configuration there is obtained a retaining portion comprising at least partially a flexible layer and a conductive layer.

Cette disposition facilite la fabrication du dispositif de liaison électrique car il est possible de prévoir une superposition au moins partielle des deux couches puis la formation du dispositif pour engendrer la portion de contact et la portion de retenue à partir de la lame de base.This arrangement facilitates the manufacture of the electrical connection device because it is possible to provide at least a partial superposition of the two layers and the formation of the device for generating the contact portion and the retaining portion from the base plate.

Le corps comprend une couche flexible longitudinale de la lame en un matériau apte à être déformé élastiquement, ladite couche flexible comprenant une partie comprise dans la portion de retenue et une partie attenante comprise dans le reste du corps.The body comprises a longitudinal flexible layer of the blade made of a material capable of being elastically deformed, said flexible layer comprising a portion included in the retaining portion and an adjoining portion included in the rest of the body.

En d'autre terme le corps comprend une couche à mémoire de forme apte à être déformée s'étendant longitudinalement partiellement dans la portion de retenue et partiellement dans le reste du corps.In other words the body comprises a deformable shape memory layer extending longitudinally partially in the retaining portion and partially in the rest of the body.

Il apparait ainsi que le corps comprend plusieurs couches ayant des propriétés mécaniques et de conductivité définies. Ainsi, la portion de retenue apparait comme un prolongement du corps permettant de maintenir la portion conductrice en position de liaison.It thus appears that the body comprises several layers having defined mechanical and conductivity properties. Thus, the retaining portion appears as an extension of the body to maintain the conductive portion in the connecting position.

Il n'est donc pas nécessaire d'utiliser d'une part une barrette conductrice et d'autre part un ressort à lame pour obtenir un dispositif de liaison électrique.It is therefore not necessary to use on the one hand a conductive strip and on the other hand a leaf spring to obtain an electrical connection device.

Le dispositif de liaison électrique tel que décrit ici permet, avec sa structure simple, à la fois un maintien en position et une bonne circulation de courant lorsque la portion conductrice est en position de liaison.The electrical connection device as described here allows, with its simple structure, both a position retention and a good flow of current when the conductive portion is in the connecting position.

Le corps comprend une portion de contact dans laquelle est ménagé l'emplacement de contact électrique, la portion de contact électrique comprenant une couche conductrice longitudinale de la lame en un matériau conducteur apte à conduire un courant électrique.The body comprises a contact portion in which is formed the electrical contact location, the electrical contact portion comprising a longitudinal conductive layer of the blade of a conductive material adapted to conduct an electric current.

Par longitudinal, on entend le long de la direction d'extension de la lame formant le corps, chaque couche étant une épaisseur de la lame mais ne s'étendant pas forcément sur toute la longueur de la lame.By longitudinal is meant along the direction of extension of the blade forming the body, each layer being a thickness of the blade but not necessarily extending over the entire length of the blade.

La couche conductrice a pour but de permettre la circulation du courant.The purpose of the conductive layer is to allow the flow of current.

Selon un aspect de l'invention, l'appareil électrique est un bloc de jonction.According to one aspect of the invention, the electrical apparatus is a terminal block.

Selon un aspect de l'invention le corps est une pièce d'un seul tenant. Cette disposition permet de fabriquer le dispositif de liaison à partir d'une seule et même pièce en forme de lame.According to one aspect of the invention the body is a single piece. This arrangement makes it possible to manufacture the connecting device from one and the same piece in the shape of a blade.

La forme de lame du corps permet d'économiser de la matière lors de la fabrication puisqu'il est aisé de prévoir un nombre important de lames dans une tôle de base en limitant les chutes de matière.The blade shape of the body saves material during manufacture since it is easy to provide a large number of blades in a base plate by limiting material falls.

Selon un aspect de l'invention, le matériau apte à être déformé élastiquement présente un module de Young compris entre 100 MPa et 300 MPa, de préférence entre 150 MPa et 250 MPa et en particulier entre 200 MPa et 220 MPa.According to one aspect of the invention, the material capable of being elastically deformed has a Young's modulus of between 100 MPa and 300 MPa, preferably between 150 MPa and 250 MPa and in particular between 200 MPa and 220 MPa.

Selon un aspect de l'invention, le matériau apte à être déformé électriquement comprend de l'acier inoxydable ou un composant présentant des caractéristiques similaires en termes de déformation élastique.According to one aspect of the invention, the electrically deformable material comprises stainless steel or a component having similar characteristics in terms of elastic deformation.

Selon un aspect de l'invention le matériau conducteur présente une conductivité électrique comprise entre 20×106 S.m-1 et 70×106 S.m-1 et, de préférence entre 30×106 S.m-1 et 65×106 S.m-1 et en particulier entre 35×106 S.m-1 et 62×106 S.m-1.According to one aspect of the invention the conductive material has an electrical conductivity of between 20 × 10 6 Sm-1 and 70 × 10 6 Sm-1 and preferably between 30 × 10 6 Sm-1 and 65 × 10 6 Sm-1. 1 and in particular between 35 × 10 6 Sm-1 and 62 × 10 6 Sm-1.

Selon un aspect de l'invention, le matériau apte à être déformé élastiquement de la couche flexible présente une conductivité électrique comprise entre 0 et 10% de celle dudit matériau conducteur, de préférence entre 0,5 et 5%, et en particulier entre 1 et 3%.According to one aspect of the invention, the material capable of being elastically deformed of the flexible layer has an electrical conductivity of between 0 and 10% of that of said conductive material, preferably between 0.5 and 5%, and in particular between 1 and 5%. and 3%.

Selon un aspect de l'invention, le matériau conducteur présente un module de Young compris entre 60 000 MPa et 180 000 MPa, de préférence entre 90 000 MPa et 150 000 MPa, et en particulier entre 110 000 MPa et 130 000 MPa.According to one aspect of the invention, the conductive material has a Young's modulus of between 60,000 MPa and 180,000 MPa, preferably between 90,000 MPa and 150,000 MPa, and in particular between 110,000 MPa and 130,000 MPa.

Selon un aspect de l'invention, le matériau conducteur comprend du cuivre, de l'aluminium ou un matériau présentant des caractéristiques similaires ou du même ordre de grandeur en termes de conductivité électrique.According to one aspect of the invention, the conductive material comprises copper, aluminum or a material having similar characteristics or the same order of magnitude in terms of electrical conductivity.

Selon un aspect de l'invention, la portion de contact comprend en outre une couche de contact longitudinale de la lame en un matériau de contact apte à coopérer électriquement par contact avec la portion conductrice du conducteur électrique en position de liaison.According to one aspect of the invention, the contact portion further comprises a longitudinal contact layer of the blade in a contact material adapted to cooperate electrically by contact with the conductive portion of the electrical conductor in the connecting position.

La couche de contact a pour rôle d'établir un contact suffisant avec la portion conductrice en position de liaison. De préférence, le matériau de contact présente une surface de coopération ductile de manière à épouser au moins une partie externe surfacique de la portion conductrice pour permettre le passage d'un courant tout en évitant les faux contacts.The role of the contact layer is to establish sufficient contact with the conductive portion in the connecting position. Preferably, the contact material has a ductile cooperation surface so as to fit at least one outer surface portion of the conductive portion to allow the passage of a current while avoiding false contacts.

En particulier, le matériau de contact comprend de l'étain ou tout autre matériau présentant des caractéristiques similaires ou du même ordre de grandeur en termes de conductivité électrique et de ductilité.In particular, the contact material comprises tin or any other material having similar characteristics or the same order of magnitude in terms of electrical conductivity and ductility.

Selon un aspect de l'invention la couche de contact est obtenue par un procédé d'étamage sur au moins une partie de la couche conductrice.According to one aspect of the invention the contact layer is obtained by a tinning process on at least a portion of the conductive layer.

La couche conductrice a pour rôle de conduire le courant électrique en provenance du conducteur électrique. De préférence, le matériau conducteur est agencé pour limiter les pertes en ligne.The conductive layer has the role of conducting the electric current from the electrical conductor. Preferably, the conductive material is arranged to limit losses in line.

Selon un aspect de l'invention, la couche de contact et la couche conductrice peuvent consister en une couche de cuivre sur laquelle est réalisé un étamage.According to one aspect of the invention, the contact layer and the conductive layer may consist of a copper layer on which is made a tinning.

Selon un aspect de l'invention, l'emplacement de contact électrique présente une surface de coopération agencée pour coopérer avec la portion conductrice du conducteur électrique, ladite surface de coopération étant transversale à la direction principale et ménagée dans la couche de contact.According to one aspect of the invention, the electrical contact location has a cooperation surface arranged to cooperate with the conductive portion of the electrical conductor, said cooperation surface being transverse to the main direction and formed in the contact layer.

Selon un aspect de l'invention, l'emplacement de contact électrique est ménagé dans le corps et obtenu par une découpe transversale à direction principale, la découpe engendrant la surface de coopération transversale qui correspond à une section transversale de la couche de contact.According to one aspect of the invention, the electrical contact location is formed in the body and obtained by a main direction transverse cut, the cut generating the transverse cooperation surface which corresponds to a cross section of the contact layer.

Il est ainsi aisé de ménager l'emplacement de coopération à partir de la lame de base destinée à former le dispositif de liaison électrique. Pour ce faire il suffit de réaliser le perçage de l'ouverture traversante. Il n'est ainsi pas nécessaire de procéder à un ajout de matière pour obtenir l'emplacement de contact électrique.It is thus easy to arrange the cooperation location from the base plate for forming the electrical connection device. To do this, simply drill the through opening. It is thus not necessary to add material to obtain the electrical contact location.

Selon un aspect de l'invention, l'ouverture traversante est obtenue par un perçage ou poinçonnage dans le corps, la surface de coopération transversale de la couche de contact étant engendrée par ledit perçage.According to one aspect of the invention, the through opening is obtained by drilling or punching in the body, the transverse cooperation surface of the contact layer being generated by said drilling.

Selon un aspect de l'invention, la portion de contact présente une partie s'étendant sensiblement selon la direction principale et une partie s'étendant sensiblement transversalement à la direction principale.According to one aspect of the invention, the contact portion has a portion extending substantially in the main direction and a portion extending substantially transversely to the main direction.

Selon un aspect de l'invention, ladite partie s'étendant sensiblement transversalement est obtenue au moins partiellement à partir d'une extension du corps pliée et/ou correspond à un ajout de matière rapporté sur la lame formant le corps.According to one aspect of the invention, said substantially transversely extending portion is obtained at least partially from an extension of the folded body and / or corresponds to an addition of material attached to the blade forming the body.

De préférence, la partie s'étendant sensiblement transversalement est obtenue à partir d'une découpe partielle dans le corps, la partie partiellement découpée étant ensuite disposée transversalement à la direction principale par pliage.Preferably, the substantially transversely extending portion is obtained from a partial cut in the body, the partially cut portion being then disposed transversely to the main direction by folding.

Selon un aspect de l'invention, la partie s'étendant sensiblement transversalement comprend une portion s'étendant sensiblement dans un plan normal à la direction principale et/ou au moins une autre portion s'étendant transversalement audit plan normal.According to one aspect of the invention, the substantially transversely extending portion comprises a portion extending substantially in a plane normal to the main direction and / or at least one other portion extending transversely to said normal plane.

De préférence, la partie s'étendant transversalement comprend quatre portions s'étendant sensiblement en prolongement du contour transversal de l'ouverture.Preferably, the transversely extending portion comprises four portions extending substantially in extension of the transverse contour of the opening.

Selon un aspect de l'invention, la portion de retenue est agencée pour être disposée en une position de retrait dans laquelle la portion conductrice du conducteur électrique est apte à être disposée en position de liaison et retirée de la position de liaison.According to one aspect of the invention, the retaining portion is arranged to be disposed in a retracted position in which the conductive portion of the electrical conductor is adapted to be disposed in the connecting position and removed from the connecting position.

La mobilité de la portion de retenue entre la position de retenue et la position de retrait permet d'unir et alternativement de retirer aisément le conducteur électrique du dispositif de liaison électrique.The mobility of the retaining portion between the retaining position and the retracted position makes it possible to unite and alternatively to easily remove the electrical conductor from the electrical connection device.

Selon un aspect de l'invention, la portion de retenue est au moins en partie agencée pour être déformée élastiquement entre la portion de retenue et la position de retrait. De préférence, la portion de retenue est à mémoire de forme. En particulier, la portion de retenue est agencée pour imposer une contrainte selon la direction principale dirigée vers l'emplacement de contact électrique en l'absence de sollicitation externe visant à la déformer.According to one aspect of the invention, the retaining portion is at least partly arranged to be elastically deformed between the retaining portion and the retracted position. Preferably, the retaining portion is shape memory. In particular, the retaining portion is arranged to impose a stress in the main direction directed to the electrical contact location in the absence of external stress to deform.

Selon un aspect de l'invention, la portion de retenue est disposée en une position déconnectée en l'absence de sollicitation et quand la portion conductrice ne coopère pas avec l'emplacement de contact électrique.According to one aspect of the invention, the retaining portion is disposed in a disconnected position in the absence of bias and when the conductive portion does not cooperate with the electrical contact location.

De préférence, au moins une partie de la portion de retenue est en contact avec une butée ménagée dans le corps en position déconnectée. En particulier, ladite butée est au moins en partie confondue avec l'emplacement de contact électrique.Preferably, at least a portion of the retaining portion is in contact with a stop in the body in the disconnected position. In particular, said stop is at least partially confused with the electrical contact location.

Ainsi, lorsque la portion conductrice ne coopère pas avec le dispositif de liaison électrique, la portion de retenue est fixe par rapport au reste du corps en venant en contact contre la butée. Un utilisateur peut alors disposer la portion de retenue en position de retrait pour la disposition de la portion conductrice.Thus, when the conductive portion does not cooperate with the electrical connection device, the retaining portion is fixed relative to the rest of the body by coming into contact against the stop. A user can then dispose the retaining portion in the retracted position for the disposition of the conductive portion.

Lorsque l'utilisateur relâche la portion de retenue, cette dernière vient se positionner en position de retenue et impose une contrainte selon la direction principale à la portion conductrice. La portion conductrice est ainsi maintenue en position de liaison.When the user releases the retaining portion, the latter is positioned in the retaining position and imposes a constraint in the main direction to the conductive portion. The conductive portion is thus maintained in the connecting position.

Selon un aspect de l'invention, au moins une partie du corps est obtenue par laminage, clinchage, soudure électrique et/ou fixation mécanique, notamment la portion de contact et/ou la portion de retenue.According to one aspect of the invention, at least a part of the body is obtained by rolling, clinching, electrical welding and / or mechanical fixing, in particular the contact portion and / or the retaining portion.

Ainsi, lorsque le corps comprend plusieurs couches, ces couches sont assemblées par laminage. Le processus de fabrication du corps est simple : il consiste à disposer de différentes couches les unes par rapport aux autres, puis à assembler ces couches, par laminage ou clinchage par exemple, et à réaliser l'ouverture traversante.Thus, when the body comprises several layers, these layers are assembled by rolling. The manufacturing process of the body is simple: it consists of having different layers relative to each other, then to assemble these layers, by rolling or clinching for example, and to achieve the through opening.

Selon un aspect de l'invention, au moins une partie du corps comprend un assemblage de deux couches de contact externes opposées, une couche flexible centrale et deux couches conductrices intermédiaires.According to one aspect of the invention, at least a part of the body comprises an assembly of two opposite outer contact layers, a central flexible layer and two intermediate conductive layers.

Selon un autre aspect de l'invention, au moins une partie du corps comprend un assemblage d'une couche de contact externe, d'une couche flexible externe opposée et d'une couche conductrice intermédiaire.According to another aspect of the invention, at least a portion of the body comprises an assembly of an outer contact layer, an opposite outer flexible layer and an intermediate conductive layer.

Alternativement au moins une partie du corps est constituée en un matériau unique apte à être déformé élastiquement et à conduire le courant. De préférence, une couche superficielle pour l'amélioration du contact électrique est apposée sur ledit matériau. En particulier, ledit matériau subit un traitement de surface pour réaliser le dépôt de la couche superficielle.Alternatively at least a part of the body is made of a single material able to be elastically deformed and to conduct the current. Preferably, a surface layer for improving the electrical contact is affixed to said material. In particular, said material undergoes a surface treatment to achieve the deposition of the surface layer.

Selon un aspect de l'invention, la portion de contact et la portion de retenue sont constituées d'un assemblage de couches présentant des dimensions longitudinales identiques. Les épaisseurs des couches peuvent être différentes, leurs longueurs et leurs largeurs étant identiques.According to one aspect of the invention, the contact portion and the retaining portion consist of an assembly of layers having identical longitudinal dimensions. The thicknesses of the layers may be different, their lengths and their widths being identical.

Cette disposition vise à simplifier la gestion des pièces lors de la fabrication, l'assemblage des couches étant facile par leur correspondance dimensionnelle.This provision aims to simplify the management of parts during manufacture, assembling the layers being easy by their dimensional correspondence.

Selon un autre aspect ne faisant pas partie de l'invention, la portion de retenue est constituée d'une portion de couche en matériau apte à être déformé élastiquement. Ainsi, la portion de retenue est une extension du corps ne comprenant que cette portion de la couche flexible. Cette disposition permet de limiter les quantités d'autres matériaux que celui apte à être déformé élastiquement pour la fabrication du corps.According to another aspect not forming part of the invention, the retaining portion consists of a layer portion of material capable of being elastically deformed. Thus, the retaining portion is an extension of the body comprising only this portion of the flexible layer. This arrangement makes it possible to limit the quantities of other materials than that able to be deformed elastically for the manufacture of the body.

Selon un aspect de l'invention, la portion de retenue est obtenue par pliage de la lame formant le corps. Le pliage de la lame est à considérer comme une étape de fabrication simple. Cette étape de fabrication peut être répétée par une machine produisant un grand nombre de pièce.According to one aspect of the invention, the retaining portion is obtained by folding the blade forming the body. The folding of the blade is to be considered as a simple manufacturing step. This manufacturing step can be repeated by a machine producing a large number of parts.

Le dispositif de liaison électrique présente ainsi une structure simple car il peut être obtenu à partir d'une lame dans laquelle une ouverture traversante a été ménagée et une extrémité pliée pour former une boucle.The electrical connection device thus has a simple structure because it can be obtained from a blade in which a through opening has been formed and an end folded to form a loop.

Selon un aspect de l'invention, la portion de retenue présente au moins en partie des tronçons courbes longitudinalement.According to one aspect of the invention, the retaining portion has at least partly longitudinally curved sections.

Le fait de présenter des tronçons courbes confère une forme générale courbe qui permet de répartir les efforts appliqués par la portion de retenue qui est un ressort à lame.The fact of having curved sections gives a generally curved shape that distributes the forces applied by the retaining portion which is a leaf spring.

Ainsi, lors de changement de positions entre la position déconnectée, la position de retenue et la position de retrait, la courbure de la portion de retenue a pour effet d'imposer une contrainte faible au reste du corps. En effet, la forme courbe permet un passage aisé entre les différentes positions. La boucle dans sont ensemble est alors déformée ce qui répartit les efforts.Thus, when changing positions between the disconnected position, the retaining position and the retracted position, the curvature of the retaining portion has the effect of imposing a low stress on the rest of the body. Indeed, the curved shape allows easy passage between different positions. The loop in together is then deformed which distributes the efforts.

La présente invention concerne également un système de liaison électrique pour appareil électrique comprenant au moins un dispositif de liaison électrique tel que décrit précédemment.The present invention also relates to an electrical connection system for electrical apparatus comprising at least one electrical connection device as described above.

Selon un aspect de l'invention, le système de liaison électrique présente une symétrie par rapport à un plan transversal à la direction principale.According to one aspect of the invention, the electrical connection system has a symmetry with respect to a plane transverse to the main direction.

Selon un aspect de l'invention, le système de liaison électrique est agencé pour coopérer avec un appareil électrique. De préférence, le système de liaison électrique présente un logement agencé pour établir une liaison électrique avec un élément externe conducteur. Ce logement est également appelé « logement de shunt ».According to one aspect of the invention, the electrical connection system is arranged to cooperate with an electrical appliance. Preferably, the electrical connection system has a housing arranged to establish an electrical connection with a conductive outer element. This housing is also called "shunt housing".

Selon un aspect de l'invention, le système de liaison électrique pour appareil électrique tel que décrit ci-avant, comprend deux dispositifs de liaison électrique dont les corps sont d'un seul tenant ou accolés.According to one aspect of the invention, the electrical connection system for electrical apparatus as described above, comprises two electrical connection devices whose bodies are in one piece or contiguous.

Selon un aspect de l'invention, lesdits deux corps d'un seul tenant comprennent une portion commune s'étendant longitudinalement. Selon un autre aspect de l'invention, lesdits deux corps sont accolés et présentent chacun une surface de coopération longitudinale et/ou transversale.According to one aspect of the invention, said two bodies in one piece comprise a common portion extending longitudinally. According to one Another aspect of the invention, said two bodies are contiguous and each have a longitudinal and / or transverse cooperation surface.

Selon un aspect de l'invention le système de liaison électrique est une barrette de liaison d'un appareil électrique.According to one aspect of the invention the electrical connection system is a connecting bar of an electrical appliance.

De toute façon l'invention sera bien comprise à l'aide de la description qui suit en référence aux dessins schématiques annexés représentant, à titre d'exemple non limitatif, une forme d'exécution de ce dispositif de liaison électrique pour un appareil électrique.

  • Figure 1 est une vue en perspective d'un système de liaison électrique coopérant avec deux conducteurs électriques.
  • Figure 2 et 3 sont des vues en perspective de systèmes de liaison électrique en position déconnectée.
  • Figures 4 à 7 sont des vues en perspective de systèmes de liaison électrique coopérant avec deux conducteurs électriques.
  • Figures 8 à 11 sont des vues en perspective de dispositifs de liaison électrique en position de retenue de conducteurs électriques.
  • Figures 12 à 14 sont des vues en perspective de systèmes de liaison électrique coopérant avec deux conducteurs électriques.
In any case the invention will be better understood from the following description with reference to the accompanying schematic drawings showing, by way of non-limiting example, an embodiment of this electrical connection device for an electrical appliance.
  • Figure 1 is a perspective view of an electrical connection system cooperating with two electrical conductors.
  • Figure 2 and 3 are perspective views of electrical connection systems in disconnected position.
  • Figures 4 to 7 are perspective views of electrical connection systems cooperating with two electrical conductors.
  • Figures 8 to 11 are perspective views of electrical connection devices in the electrical conductor holding position.
  • Figures 12 to 14 are perspective views of electrical connection systems cooperating with two electrical conductors.

Comme illustré aux figures 1 à 14, un système de liaison électrique 1 est agencé pour établir une connexion électrique avec au moins une portion conductrice 3 d'un conducteur électrique 5.As illustrated in Figures 1 to 14 , an electrical connection system 1 is arranged to establish an electrical connection with at least one conductive portion 3 of an electrical conductor 5.

Le système de liaison électrique 1 est agencé pour être disposé dans un appareil électrique par exemple un bloc de jonction et a pour rôle de maintenir le contact électrique avec le conducteur électrique 5.The electrical connection system 1 is arranged to be arranged in an electrical appliance, for example a terminal block, and its function is to maintain electrical contact with the electrical conductor 5.

Le système de liaison électrique 1 comprend au moins un dispositif de liaison électrique 7 destiné à coopérer avec une partie conductrice 3 d'un conducteur électrique 5. Des exemples de dispositifs de liaison électrique 7 sont présentés aux figures 8 à 11 et également aux autres figures en tant que parties du système de liaison électrique 1.The electrical connection system 1 comprises at least one electrical connection device 7 intended to cooperate with a conductive part 3 of an electrical conductor 5. Examples of electrical connection devices 7 are presented to the Figures 8 to 11 and also to the other figures as parts of the electrical connection system 1.

Comme illustré aux figures 4 à 6, le dispositif de liaison électrique 7 comprend un corps 9 formant une lame 11. Le corps 9 est obtenu à partir d'une lame de base plane présentant plusieurs couches superposées au moins partiellement et fixées ensemble par laminage.As illustrated in Figures 4 to 6 , the electrical connection device 7 comprises a body 9 forming a blade 11. The body 9 is obtained from a flat base plate having several overlapping layers at least partially and fixed together by rolling.

Le corps 9 comprend une couche flexible 13 s'étendant longitudinalement par rapport à la lame 11. La couche flexible 13 comprend un matériau apte à être déformé élastiquement, comme de l'acier inoxydable avec un module de Young compris entre 200 MPa et 220 MPa.The body 9 comprises a flexible layer 13 extending longitudinally with respect to the blade 11. The flexible layer 13 comprises a material capable of being elastically deformed, such as stainless steel with a Young's modulus of between 200 MPa and 220 MPa. .

Le corps 9 comprend également au moins une couche conductrice 15 s'étendant longitudinalement par rapport à la lame 11. La couche conductrice 15 comprend un matériau conducteur apte à conduire un courant électrique tel que le cuivre avec une conductivité électrique comprise entre 35×106 S.m1 et 62×106 S.m-1 et un module de Young compris entre 90 000 et 150 000 MPa. L'acier inoxydable présente une conductivité électrique de l'ordre de 2% de celle du cuivre utilisé.The body 9 also comprises at least one conductive layer 15 extending longitudinally with respect to the blade 11. The conductive layer 15 comprises a conductive material capable of conducting an electric current such as copper with an electrical conductivity of between 35 × 10 6 Sm 1 and 62 × 10 6 Sm -1 and a Young's modulus of between 90,000 and 150,000 MPa. Stainless steel has an electrical conductivity of the order of 2% of that of the copper used.

Le corps 9 comprend en outre au moins une couche de contact 17 s'étendant longitudinalement par rapport à la lame 11. La couche de contact 17 comprend un matériau de contact apte à coopérer électriquement par contact, c'est-à-dire ductile et apte à épouser une surface complémentaire en se déformant pour réaliser un contact électrique fiable, c'est-à-dire sans faux contact.The body 9 further comprises at least one contact layer 17 extending longitudinally with respect to the blade 11. The contact layer 17 comprises a contact material able to cooperate electrically by contact, that is to say ductile and adapted to conform to a complementary surface by deforming to make a reliable electrical contact, that is to say without false contact.

Le matériau de contact est par exemple l'étain. Cette couche d'étain peut être déposée sur une couche de cuivre par étamage.The contact material is, for example, tin. This layer of tin can be deposited on a copper layer by tinning.

A la figure 4 une première variante présente deux couches de contact 17 externes opposées, une couche flexible 13 centrale et deux couches conductrices 15 intermédiaires. A la figure 5 les couches sont les mêmes, la couche flexible 13 étant plus étendue longitudinalement que les autres.To the figure 4 a first variant has two opposite external contact layers 17, a central flexible layer 13 and two intermediate conductive layers. To the figure 5 the layers are the same, the flexible layer 13 being extended more longitudinally than the others.

A la figure 6 une troisième variante présente une couche de contact 17 externe, une couche flexible 13 externe opposée et une couche conductrice 15 intermédiaire.To the figure 6 a third variant has an outer contact layer 17, an opposite outer flexible layer 13 and an intermediate conductive layer 15.

Alternativement, comme aux figures 1 à 3 on peut ne prévoir qu'une seule couche 19 en un matériau à la fois conducteur et flexible qui est recouverte d'une couche de contact 17 par exemple par étamage.Alternatively, as Figures 1 to 3 it is possible to provide only a single layer 19 made of a material that is both conductive and flexible and that is covered with a contact layer 17, for example by tinning.

Comme illustré aux figures 1 à 14, chaque dispositif de liaison électrique 7 comprend une portion de retenue 21 agencée pour maintenir en position de liaison la portion conductrice 3 correspondante.As illustrated in Figures 1 to 14 , each electrical connection device 7 comprises a retaining portion 21 arranged to maintain in the connecting position the corresponding conductive portion 3.

La portion de retenue 21 comprend une partie de base 21a dans le prolongement du reste du corps 9 et s'étendant sensiblement selon la direction principale 23 d'extension du corps.The retaining portion 21 comprises a base portion 21a in the extension of the remainder of the body 9 and extending substantially in the main direction 23 of extension of the body.

La portion de retenue 21 comprend également une partie de blocage 21b agencée pour maintenir en position la portion conductrice 3 par contact en lui imposant une contrainte 25 selon la direction principale 23.The retaining portion 21 also comprises a locking portion 21b arranged to hold the conductive portion 3 in position by contact by imposing a stress 25 along the main direction 23.

La portion de blocage 21b s'étend transversalement à la direction principale 23 lors du maintien de la position de liaison de la portion conductrice. On dit alors que la portion de retenue 21 est en position de retenue comme illustré aux figures 1 et 4 à 14.The locking portion 21b extends transversely to the main direction 23 while maintaining the connecting position of the conductive portion. It is said that the retaining portion 21 is in the retaining position as illustrated in FIGS. figures 1 and 4 to 14 .

La portion de retenue 21 comprend en outre une partie intermédiaire 21c liant la partie de base 21a et la partie de blocage 21b. La partie intermédiaire 21c présente une forme courbe longitudinalement.The retaining portion 21 further comprises an intermediate portion 21c linking the base portion 21a and the locking portion 21b. The intermediate portion 21c has a longitudinally curved shape.

Cette forme courbe permet de répartir les efforts engendrés sur le corps 9 par le déplacement de la portion de retenue 21. En effet, il est possible de déplacer la portion de retenue 21 car elle comprend toujours au moins une partie d'une couche flexible 13 qui lui confère un caractère élastique.This curved shape distributes the forces generated on the body 9 by the displacement of the retaining portion 21. Indeed, it is possible to move the retaining portion 21 because it always comprises at least a portion of a flexible layer 13 which gives it an elastic character.

Le corps 9 présente une ouverture traversante 27 s'étendant transversalement à la direction principale 23. L'ouverture traversante 27 est ménagée dans une portion de contact 29 du corps 9 attenante à la portion de retenue 21.The body 9 has a through opening 27 extending transversely to the main direction 23. The through opening 27 is formed in a contact portion 29 of the body 9 adjacent to the retaining portion 21.

La portion de contact 29 présente un emplacement de contact électrique 31 qui correspond au moins en partie à un contour transversal de l'ouverture traversante 27.The contact portion 29 has an electrical contact location 31 which corresponds at least in part to a transverse contour of the through opening 27.

Comme illustré aux figures 4 à 6, l'ouverture traversante 27 engendre dans chaque couche de contact 17 une surface de coopération transversale 33 qui est apte à coopérer électriquement avec la portion conductrice 3 en position de liaison.As illustrated in Figures 4 to 6 , the through opening 27 generates in each contact layer 17 a transverse cooperation surface 33 which is adapted to cooperate electrically with the conductive portion 3 in the connecting position.

Cette coopération assure le contact électrique et permet la transmission du courant entre la portion conductrice 3 et la couche conductrice 15 par l'intermédiaire de la couche de contact 17.This cooperation ensures the electrical contact and allows the transmission of the current between the conductive portion 3 and the conductive layer 15 via the contact layer 17.

Selon des variantes de réalisation, la portion de contact 29 peut présenter une extension 35. A la figure 1 et à la figure 8, il s'agit par exemple de la matière issue d'une découpe partielle ensuite pliée pour être disposée transversalement à la direction principale 23.According to alternative embodiments, the contact portion 29 may have an extension 35. At the figure 1 and at the figure 8 it is for example the material resulting from a partial cut then folded to be arranged transversely to the main direction 23.

A la figure 10 l'extension 35 correspond à un élément conducteur rapporté s'étendant transversalement à la direction principale 23 et à la figure 9 l'extension 35 correspond à quatre éléments s'étendant transversalement à la direction principale 35 et en prolongement du contour transversal de l'ouverture traversante 27.To the figure 10 the extension 35 corresponds to an attached conductive element extending transversely to the main direction 23 and to the figure 9 the extension 35 corresponds to four elements extending transversely to the main direction 35 and in extension of the transverse contour of the through opening 27.

Le fait de disposer d'une extension 35 agrandit l'emplacement de contact électrique 31 avec la portion conductrice 3, l'emplacement de contact électrique 31 étant la zone coopérant avec la partie conductrice 3 en position de liaison.The fact of having an extension 35 enlarges the electrical contact location 31 with the conductive portion 3, the electrical contact location 31 being the zone cooperating with the conductive portion 3 in the connecting position.

A la figure 1, la portion de retenue 21 est en position de retenue. Puisque la portion de retenue 21 présente une certaine élasticité, il est possible de la déplacer dans une position de retrait (non représentée) dans laquelle il est possible de retirer la portion conductrice 3.To the figure 1 , the retaining portion 21 is in the retaining position. Since the retaining portion 21 has a certain elasticity, it is possible to move it to a retracted position (not shown) in which it is possible to remove the conductive portion 3.

La portion de retenue 21 est pliée en position de retrait de manière à ménager un espace libre d'introduction ou de retrait dans l'ouverture traversante 27.The retaining portion 21 is folded into the retracted position so as to provide a free space for insertion or withdrawal into the through opening 27.

Lorsque la portion conductrice 3 est retirée comme à la figure 2, la portion de retenue 21 s'étend à la manière d'un ressort à lame et vient en contact contre une butée 37 qui correspond au moins partiellement à l'emplacement de contact électrique 31.When the conductive portion 3 is removed as in the figure 2 , the retaining portion 21 extends in the manner of a leaf spring and comes into contact with a stop 37 which corresponds at least partially to the electrical contact location 31.

On définit ainsi la position déconnectée. La portion de retenue 21 est fixe par rapport au reste du corps 9 et est apte à être déplacer pour la mise en place d'une portion conductrice 3 d'un conducteur électrique 5.This defines the disconnected position. The retaining portion 21 is fixed relative to the remainder of the body 9 and is able to be displaced for the establishment of a conductive portion 3 of an electrical conductor 5.

Il apparait que lors des différents déplacements de la portion de retenue 21 entre la position de retenue, la position de retrait et la position déconnectée, les efforts dus à la déformation de la portion de retenue 21 sont répartis sur l'ensemble de la portion de retenue 21 de par sa forme courbe.It appears that during the various displacements of the retaining portion 21 between the retaining position, the retracted position and the disconnected position, the forces due to the deformation of the retaining portion 21 are distributed over the entire portion of the retaining portion. retained 21 by its curved shape.

La durée de vie de la portion de retenue 21 est ainsi augmentée en minimisant l'usure locale d'une partie plus sollicitée que le reste.The service life of the retaining portion 21 is thus increased by minimizing the local wear of a more stressed part than the rest.

Comme illustré à la figure 2, le corps 9 peut présenter un logement 39 destiné à être raccordé électriquement à un élément extérieur. Il peut s'agir par exemple d'un logement 39 destiné à un pont entre deux systèmes 1 disposés parallèlement dans un appareil électrique.As illustrated in figure 2 , the body 9 may have a housing 39 to be electrically connected to an external element. It may be for example a housing 39 for a bridge between two systems 1 arranged in parallel in an electrical device.

Comme il apparait à la figure 7 deux dispositifs 7 d'un même système 1 peuvent être accolés soit en présentant une zone commune s'étendant selon la direction principale 41 soit transversalement 43.As it appears at the figure 7 two devices 7 of the same system 1 may be contiguous or having a common area extending along the main direction 41 or transversely 43.

Cette disposition permet de prévoir des systèmes de liaison électrique 1 comprenant plus de deux dispositifs de liaison 7, ce qui permet un gain de place dans l'appareil électrique.This arrangement makes it possible to provide electrical connection systems 1 comprising more than two connecting devices 7, which allows a saving of space in the electrical apparatus.

Selon un exemple de réalisation le système de liaison électrique 1 peut correspondre à une barrette de liaison d'un bloc de jonction.According to an exemplary embodiment, the electrical connection system 1 can correspond to a link strip of a terminal block.

Claims (9)

  1. An electrical connection device (7) for an electrical apparatus arranged, in a connecting position, to be in electrical contact with an electrical conductor (5), said electrical connection device (7) having an electrical contact location (31) arranged to cooperate with at least one conductive section (3) of said electrical conductor (5),
    the electrical connection device (7) comprising a body (9) extending along a main direction (23) and having a blade shape (11),
    said body (9) comprising a retaining section (21) of the conductive section (3) in the connecting position, the retaining section (21) being arranged to be disposed in a retaining position of the conductive section (3) when said conductive section (3) is disposed in the connecting position,
    the body (9) comprising a contact section (29) in which the electrical contact location (31) is formed, the electrical contact section (31) comprising a longitudinal conductive layer (15) of the blade (11) made of a conductive material capable of conducting an electric current,
    the body (9) comprising a longitudinal flexible layer (13) of the blade (11) made of a material capable of being elastically deformed, said flexible layer (13) comprising a portion comprised in the retaining section (21) and an adjoining portion comprised in the remainder of the body (9),
    the retaining section (21) having, in the retaining position, a base portion (21a) extending substantially along the main direction (23), a blocking portion (21b) in contact with the conductive section (3) and extending transversely to the main direction (23), and an intermediate portion (21c) connecting the base portion (21a) to the blocking portion (21b) by extending successively substantially along the main direction (23) in a first way, then substantially transversely to the main direction (23) and substantially along the main direction (23) in a second way opposite the first way,
    the electrical connection device (7) having a through opening (27) extending transversely to the main direction (23) capable of at least partially receiving the conductive section (3) in the connecting position,
    the electrical connection device (7) being characterized in that the longitudinal conductive layer (15) further comprises a portion in the retaining section (21),
    and in that the electrical contact location (31) is formed in the body (9) for a disposition of the conductive section (3) transversely to the main direction (23) in the connecting position, the electrical contact location (31) being at least partially formed in a transverse contour of the body (9) defining the through opening (27).
  2. The electrical connection device (7) according to claim 1, wherein the contact section (29) further comprises a longitudinal contact layer (17) of the blade (11) made of a contact material capable of electrically cooperating by contact with the conductive section (3) of the electrical conductor (5) in the connecting position.
  3. The electrical connection device (7) according to the preceding claim, wherein the electrical contact location (31) has a cooperation surface (33) arranged to cooperate with the conductive section (3) of the electrical conductor (5), said cooperation surface (33) being transverse to the main direction (23) and formed in the contact layer (17).
  4. The electrical connection device (7) according to any of claims 1 to 3, wherein the contact section (29) has a portion extending substantially along the main direction (23) and a portion extending substantially transversely to the main direction (23).
  5. The electrical connection device (7) according to any of the preceding claims, wherein the retaining section (21) is arranged to be disposed in a retracted position in which the conductive section (3) of the electrical conductor (5) is capable of being disposed in the connecting position and removed from the connecting position.
  6. The electrical connection device (7) according to any of the preceding claims, wherein at least one portion of the body (9) is obtained by rolling, clinching, electric welding and/or mechanical fastening, in particular the contact section (29) and/or the retaining section (21).
  7. The electrical connection device (7) according to claim 1, wherein the retaining section (21) has at least partially longitudinally curved segments.
  8. An electrical connection system (1) for an electrical apparatus comprising at least one electrical connection device (7) according to any of the preceding claims.
  9. The electrical connection system (1) for an electrical apparatus according to the preceding claim, comprising two electrical connection devices (7) whose bodies (9) are integrally formed or joined together.
EP15173957.0A 2015-06-26 2015-06-26 Electric connection device for an electrical appliance Active EP3109943B8 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15173957.0A EP3109943B8 (en) 2015-06-26 2015-06-26 Electric connection device for an electrical appliance

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Application Number Priority Date Filing Date Title
EP15173957.0A EP3109943B8 (en) 2015-06-26 2015-06-26 Electric connection device for an electrical appliance

Publications (3)

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EP3109943A1 EP3109943A1 (en) 2016-12-28
EP3109943B1 true EP3109943B1 (en) 2019-01-02
EP3109943B8 EP3109943B8 (en) 2019-04-10

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022116188A1 (en) * 2022-06-29 2024-01-04 Harting Electric Stiftung & Co. Kg Contact spring assembly for electrical contact devices

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19810310C1 (en) * 1998-03-11 1999-07-15 Phoenix Contact Gmbh & Co Connection port for electrical conductors

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0749729Y2 (en) * 1989-08-30 1995-11-13 株式会社八光電機製作所 Wire connection device
DE102011054424A1 (en) * 2011-10-12 2013-04-18 Phoenix Contact Gmbh & Co. Kg Electrical connecting terminal, has spring clamping terminal comprising holding leg and clamping leg and integrally formed with bus bar over holding leg of clamping terminal, where terminal is formed from curved flat metal element
JP2013235681A (en) * 2012-05-07 2013-11-21 Yazaki Corp Electric wire holding structure
DE202012103987U1 (en) * 2012-10-17 2014-02-06 Conrad Stanztechnik Gmbh Connection device for connecting a stripped electrical conductor and electrical connection terminal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19810310C1 (en) * 1998-03-11 1999-07-15 Phoenix Contact Gmbh & Co Connection port for electrical conductors

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EP3109943B8 (en) 2019-04-10

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