EP2884591B1 - Lug for electrical connection to a connection terminal, associated electrical system and method for connecting such a lug to a connection terminal - Google Patents

Lug for electrical connection to a connection terminal, associated electrical system and method for connecting such a lug to a connection terminal Download PDF

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Publication number
EP2884591B1
EP2884591B1 EP14197686.0A EP14197686A EP2884591B1 EP 2884591 B1 EP2884591 B1 EP 2884591B1 EP 14197686 A EP14197686 A EP 14197686A EP 2884591 B1 EP2884591 B1 EP 2884591B1
Authority
EP
European Patent Office
Prior art keywords
spade connector
connection
terminal
connection terminal
configuration
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
EP14197686.0A
Other languages
German (de)
French (fr)
Other versions
EP2884591A1 (en
Inventor
Olivier BURTE
Gilles Longepe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
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Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP2884591A1 publication Critical patent/EP2884591A1/en
Application granted granted Critical
Publication of EP2884591B1 publication Critical patent/EP2884591B1/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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/112—Resilient sockets forked sockets having two legs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/405—Securing in non-demountable manner, e.g. moulding, riveting
    • H01R13/41—Securing in non-demountable manner, e.g. moulding, riveting by frictional grip in grommet, panel or base
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/34—Conductive members located under head of screw
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
    • H01R4/44—Clamping areas on both sides of screw
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • 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
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/12—End pieces terminating in an eye, hook, or fork

Definitions

  • the present invention relates to an electrical connection terminal to an electrical connection terminal, an electrical system comprising an electrical switching device and an auxiliary device connected to each other via one or more electrical cables provided with such a terminal. connection, as well as a method of connecting such a connection terminal to a connection terminal.
  • a persistent challenge in the field of connectors and more precisely of the connection of a connection terminal to a connection terminal is to ensure an optimal electrical contact between the terminal and the connection terminal, in order to guarantee an electrical contact. quality.
  • connection terminal for example as described in WO 2007/143805 A2
  • a connection terminal comprising an orifice for receiving means for connecting the terminal to a connection terminal.
  • the orifice is extended by a slot allowing the insertion into the orifice of a screw belonging to the connection means.
  • the connection means comprise the screw and a bracket, while when connecting the terminal to the connection terminal, the terminal is positioned in contact with the connection terminal, so that the screw passes through slit and ends up in the hole. Then, a screwing operation is performed so that the caliper maintains the terminal in contact with the connection terminal and more precisely with a connection pad of the connection terminal.
  • connection terminal makes it possible to maintain electrical contact between the terminal and the connection pad.
  • the quality of the electrical contact is limited.
  • the connection terminal is intended to be connected, on the one hand, to an electric cable comprising the terminal and, on the other hand, to an electric power conductor, it is difficult to position the electric power cable. in the connection terminal and to guarantee a quality electrical contact of the terminal and the electrical power conductor with the connection pad.
  • the aim of the invention is therefore to provide an electrical connection terminal to a connection terminal allowing improved contact quality of the terminal with the connection terminal, in particular when an electric cable provided with the terminal and an electrical power conductor are connected to the connection terminal.
  • the invention relates to an electrical connection terminal according to claim 1.
  • the projecting elements are suitable for fitting into the connection terminal and more precisely into the walls of the connection terminal, which makes it possible to connect the terminal to the connection terminal in an irremovable manner and thus to guarantee an improved quality of the electrical contact.
  • the immovable retention of the terminal at the connection terminal makes it possible to avoid any untimely, unwanted disconnection of the terminal and therefore of an electrical conductor provided with the terminal, relative to the connection terminal.
  • the fact that the terminal is connected in an irremovable manner also makes it possible to facilitate the connection of an electrical power conductor to the connection terminal, in addition to the connection of an electric cable provided with the terminal.
  • the terminal is according to any one of claims 2 to 6.
  • the subject of the invention is also an electrical system according to claim 7.
  • the electrical system is according to any one of claims 8 to 10.
  • the subject of the invention is also a method for connecting an electrical connection terminal to an electrical connection terminal, according to claim 11.
  • the electrical system 10 shown in figure 1 comprises an electrical switching device 12, such as a contactor, and an auxiliary device 14 electrically coupled to the switching device 12.
  • an electrical switching device 12 such as a contactor
  • auxiliary device 14 electrically coupled to the switching device 12.
  • the switching device 12 is a three-phase contactor 12 and comprises a housing 16, three first connection terminals 20 for input of a current, also called “first input terminals”, and three first connection terminals 22 for output. current, also called “first output terminals”.
  • the contactor 12 is known per se and comprises a control member, not shown, capable of interrupting the flow of current between the first input 20 and output 22 terminals, that is to say between electrical conductors 24 of power, only one of which is represented in the figure 1 , respectively connected to the first input terminals 20 and to the second output terminals 22.
  • the auxiliary apparatus 14 comprises four second input connection terminals 26 and four second output connection terminals 28.
  • the auxiliary apparatus 14 is suitable for monitoring the operation of the switching device 12.
  • the auxiliary apparatus 14 is used. , for example, suitable for measuring the current flowing through the first input 20 and output 22 terminals or for measuring the temperature of the first input 20 and output 22 terminals.
  • the auxiliary device 14 comprises a calculation member , not shown, suitable for measuring the electric power and the electric energy at the level of each first input 20 and output 22 connection terminal.
  • the auxiliary device 14 is generally suitable for communicating, via a wireless link or in wired variant, with a data concentrator, not shown.
  • each of its first input terminal 20 which is connected, via a respective electric cable 32, to one of the corresponding second input terminals 26 and, on the other hand, each of its first output terminals 22 which is connected, via a respective electric cable 32, to one of the corresponding second output terminals 28.
  • Each first input 20 and output 22 terminal comprises a means 34, visible at the figure 2 , connection on itself of the electric cables 32 and the electric power conductors 24.
  • the first input 20 and output 22 terminals each comprise a housing 36 for receiving an electric cable 32 and an electric conductor 24.
  • Each electrical power conductor 24 is connected either to one of the first input terminals 20 or to one of the first output terminals 22. More precisely, each electrical power conductor 24 connected to one of the first terminals d The input 20 is electrically connected, via the contactor 12, to the electrical power conductor 24 connected to the corresponding first output terminal 22. Each electrical conductor 24 comprises an end portion 38 suitable for being inserted into the corresponding first connection terminal 20, 22.
  • Each electric cable 32 comprises a resistive wire 42, a first connection end 44 provided with a heat-shrinkable sleeve 46 and a first connection member 47 to one of the first connection terminals 20, 22, as well as a second connection end 48 also provided with a heat-shrinkable sleeve 50 and with a second member 52 for connection to one of the second connection terminals 26, 28.
  • each electric cable 32 extends between one of the first terminals input 20, or output 22 connection and respectively one of the second input 26, or output 28, corresponding terminals.
  • connection means 34 is suitable for maintaining the connection between the corresponding electrical power conductor 24 and the corresponding first connection terminal 20, 22.
  • Each connection means 34 comprises a screw 54 associated with a bracket 56.
  • the housing 36 is suitable for receiving the first connection member 47 and the end part 38 and comprises two side walls 58, 59 between which extends a connection area 60.
  • the side walls 58, 59 are perpendicular to the connection area. 60.
  • the first connection member 47 corresponds to a terminal 47 which comprises a zone 64 for connecting the resistive wire 42 and a base 66.
  • the terminal 47 is obtained, for example, by bending and cutting a metal plate.
  • the terminal 47 extends along a longitudinal axis X47.
  • the screw 54 and the bracket 56 are suitable for exerting a pressure force on the terminal 47 and the end part 38, in order to maintain an electrical contact between the connection pad 60, the end part 38 and the terminal 47.
  • the screw 54 is suitable for being screwed or unscrewed in order to keep the corresponding electrical power conductor 24 electrically connected to the corresponding connection area 60 or respectively in order to disconnect the corresponding electrical power conductor 24 from the corresponding connection area 60 .
  • the bracket 56 and the connection pad 60 are distant from each other and form a space E for receiving the terminal 47 and the electrical power conductor 24.
  • connection pad 60 includes a hole 65 for receiving the screw 54.
  • connection zone 64 is of suitable shape to maintain an electrical connection between the base 66 and the resistive wire 42.
  • the terminal 47 and more precisely its base 66 is plastically deformable between two configurations, more precisely from an initial configuration presented to figures 2 to 6 to a connection configuration to the corresponding first connection terminal 20, 22, shown in figures 7 and 8 .
  • the base 66 comprises a first part 68 and a second part 70.
  • the base 66 also comprises an orifice 72 for passage of the screw 54 defined between the first 68 and second 70 parts.
  • the first 68 and second 70 parts respectively comprise a first lateral side 74 and a second lateral side 76, which belong to a first plane P of the terminal 47 and define this first plane P.
  • the first and second lateral sides 74, 76 s' extend generally along the longitudinal axis X47.
  • the distance between the two lateral sides 74, 76, when the terminal is in the initial configuration, has a first value D74i which is less than its value D74c when the terminal is in the connection configuration.
  • the first lateral side 74 is opposite one 59 of the two side walls, while the second lateral side 76 is opposite the other 58 side wall.
  • the first 68 and second 70 parts also each include a first 78 and a second 80 fins which define between them, facing the orifice 72, a slot 82.
  • a first angle ⁇ 1 measured between the first 68 and second 70 parts, on the side of the first plane P, is between 90 ° and 170 °, preferably between 120 ° and 150 °.
  • the corresponding base 66 When the terminal 47 is in its initial configuration and is inserted into one of the first connection terminals 20, 22, the corresponding base 66 has, as shown in figure 3 , its edge 84 oriented towards the connection pad 60 and its lateral sides 74, 76 oriented towards the yoke 56. In other words, the base 66 has its edge 84 which is closer to the connection pad 60 than its lateral sides 74, 76.
  • the first angle ⁇ 1 is equal to 180 ° with a margin of error of plus or minus 5 °.
  • the first 68 and second 70 parts are positioned against the connection pad 60 and extend parallel or almost parallel to within less than 5 °, to the connection pad 60 and to the foreground P.
  • the orifice 72 is a through hole aligned with the hole in the connection pad 60 when the terminal 47 is connected to the connection pad 60.
  • the first 74 and second 76 lateral sides each comprise two elements 86 projecting from the remainder of the base 66 and from the corresponding lateral side 74, 76.
  • the projecting elements 86 are oriented respectively in the direction of the side walls 59, 58, when the terminal 47 is connected to the connection pad 60.
  • the first 78 and second 80 fins are inclined relative to the first plane P and the slot 82 corresponds to an access slot to the orifice for the connection means 34, more precisely for the screw 54.
  • the minimum width of the slot 82 measured parallel to the first plane P and perpendicular to one of the lateral sides 74, 76 has, in the initial configuration, a value W82i greater than the diameter D54 of the screw.
  • a second angle ⁇ 2 between each fin 78, 80 and the first plane P, measured on the side of the plane P is between 20 ° and 70 °, preferably between 40 ° and 60 °.
  • the first 78 and second 80 fins are suitable for being flattened by the stirrup 56 during the plastic deformation of the terminal during its passage from the initial configuration to the connection configuration.
  • the minimum width of the slot 82 measured parallel to the first plane P and perpendicular to one of the lateral sides 74, 76, has a value W82c less than the diameter of the screw D54.
  • the second angle ⁇ 2 is between 0 ° and 10 °.
  • the width of the base 66, measured in the initial configuration, at the level of each projecting element 86, parallel to the plane P and perpendicular to the lateral side 74, 76 corresponding, has a value W66i less than or equal to the distance D58 measured between the two side walls 58, 59, when the terminal 47 is connected to the first connection terminal 20, 22, at the level of the corresponding projecting element 86 and perpendicular to the corresponding side wall 58, 59.
  • the width of the base 66 measured in the connection configuration of the terminal 47, at each protruding element 86, parallel to the plane P and perpendicular to the corresponding lateral side 74, 76, has a value W66c greater than the distance D58 between the two side walls 58, 59.
  • the projecting elements 86 are suitable for being inserted into the side walls 58, 59, in the connection configuration of the terminal 47, since the value W66c is greater than the distance D58.
  • the projecting elements 86 define claws suitable for being inserted into the corresponding side wall 58, 59 when the terminal 47 is deformed in the connection configuration.
  • the protruding elements 86 are positioned at four corners formed by the base 66.
  • each protruding member 86 measured perpendicular to the corresponding lateral side 74, 76 has, for example, a value W86 of less than 3 mm, preferably between 0.4 mm and 1.2 mm.
  • FIG 8 a flowchart of a method of connecting the electric cable 32 and one of the electric power conductors 24 to one of the first connection terminals 20, 22 is shown.
  • the terminal 47 is positioned on the corresponding first connection terminal 20, 22 in order to be connected to the latter. More precisely, the fins 78, 82 are brought into contact with the connection pad 60 and the projecting elements 86 are oriented towards the yoke 56.
  • the terminal 47 is inserted at the level of the corresponding first connection terminal 20, 22, so that the screw 54 is positioned in the hole 72. More precisely, the screw 54 is already installed and disposed in the hole 65 and the terminal 47 is inserted into the corresponding connection terminal 20, 22, so that the screw 54 passes through slot 82 and is found in hole 72.
  • the terminal 47 and more precisely its base 66, is flattened.
  • the connection means 34 exert a pressure force on the base 66 in order to plastically deform the terminal from its initial configuration to its connection configuration.
  • an operation of screwing the screw 54 is carried out, so that the yoke 56 moves in the direction of the connection pad 60 and flattens the base 66, that is to say the first 68 and second 70 parts.
  • the protruding elements 86 are inserted into or scratch the corresponding side walls 58, 59 and the terminal 47 is thus immovably immobilized to the corresponding first connection terminal 20, 22.
  • the terminal 47 is generally parallel to the connection pad 60 and flattened at the bottom of the first connection terminal 20, 22, that is to say against the connection pad 60.
  • the fins 78, 80 are also flattened so as to reduce the minimum width of the slot 82 and to prevent any tearing of the terminal 47 relative to the first connection terminal 20, 22 corresponding.
  • the electric cable 32 intended to be connected to the corresponding first connection terminal 20, 22 via its terminal 47, is also connected at its second end 48, via the second member connection 52 to the corresponding second connection terminal 26, 28.
  • the screw 54 is unscrewed and the caliper 56 moves in a direction opposite to the connection pad 60.
  • the space E is suitable for receiving the corresponding electric power conductor 24. More precisely, the receiving space E is formed between, on the one hand, the connection pad 60 and the terminal 47 and, on the other hand, the yoke 56.
  • steps 100, 102 and 104 are carried out for each first connection terminal 20, 22 and following step 104 an operator has the electrical system 10, which he will install in an electrical installation between the electrical power conductors. 24.
  • the electrical power conductor 24 and more precisely, the terminal part 38 is inserted into the reception space E, in order to be connected to the corresponding first connection terminal 20, 22.
  • an operation of screwing the screw 54 is carried out in order to move the caliper 56 towards the connection area 60 and the terminal 47 and to keep the end part 38 connected to the connection area. 60 and wedged between the caliper 56 and the terminal 47.
  • the fact that in the initial configuration of the terminal 47, the first 68 and second 70 parts are inclined, allows, during the deformation of the terminal in the connection configuration, that the projecting elements 86 come to exert a pressure force against the corresponding side walls 58, 59 and fit into these walls, knowing that the walls 58, 59 are generally made of plastic material.
  • the inclination of the first 78 and second 80 fins makes it possible to form the slot 82 which is suitable, in the initial configuration of the terminal 47, to allow the screw 54 to pass so that the latter is positioned in the orifice 72. Indeed, the screw 54 is in place in each first connection terminal 20, 22, prior to the connection of the terminal 47 to the corresponding connection pad 60.
  • the fact that the first 78 and second 80 fins are inclined makes it possible, during the deformation of the terminal 47 in the connection configuration, to reduce the width of the slot 82 in order to trap the screw 54 in the orifice 72 and to prevent any disconnection of the terminal 47 from the corresponding first connection terminal 20, 22.
  • the flattening of the terminal 47 is guaranteed, which allows, following the operation unscrewing 104, to leave the space E between the connection pad 60 and the bracket 56.
  • the volume of the space E is optimized, which makes it possible to facilitate access to the corresponding first connection terminal 20, 22 , following the connection of the terminal 47.
  • the space E makes it possible to facilitate the connection of the electrical power conductor 24, that is to say of its terminal part 38, to the first corresponding connection terminal 20, 22. Since the connection of the electrical conductor 24 is facilitated and the terminal is flattened against the corresponding connection pad 60, the quality of the electrical contact between the connection pad 60, the terminal 47 and the electrical power conductor 24 is guaranteed and improved.
  • first 78 and second 80 fins, as well as the projecting elements 86 ensure that the terminal 47 is immovable with respect to the corresponding first connection terminal 20, 22, in order to guarantee the connection between the auxiliary device 14 and the contactor 12.
  • the resistive wires 42 cannot be dismantled and thus the connection between the switching device 12 and the auxiliary device 14 is guaranteed non-removable by the operator.
  • the electrical system 10 presented at the figure 1 allows the control of three-phase capacitor banks, which favor the compensation of the reactive energy caused by strongly inductive loads in an electrical installation. More precisely, thanks to capacitor banks, the current drawn on an electrical network supplying the electrical installation is reduced.
  • the resistive wires 42 make it possible to absorb current peaks passing through the first connection terminals 20, 22.
  • the terminal 47 allows the connection of the electric cable 32 or of another type of electric cable to any type of connection terminal comprising a connection pad and side walls, similar to the connection pad 60 and to the side walls 58, 59.
  • the switching device 12 is a single-phase contactor comprising a single or two first input terminals and a single or two first output terminals.
  • the switching device 12 is, for example, a circuit breaker.
  • only one of the first 68 and second 70 parts comprises a fin forming with the rest of the terminal the slot 82.
  • each lateral side 74, 76 comprises a single projecting element 86.
  • only one of the lateral sides 74, 76 comprises one or more projecting elements 86.
  • protruding elements are arranged over the entire length of the lateral sides 74, 76 and the width of the protruding elements, measured perpendicular to the side walls 58, 59, varies increasing or decreasing along the lateral sides 74 , 76.
  • the base 66 when the terminal 47 is inserted into one of the first connection terminals 20, 22, prior to its connection to one of the first connection terminals 20, 22, the base 66 corresponding to its edge 84 oriented towards the caliper 56 and its lateral sides 74, 76 in contact with the connection pad 60.
  • connection means 34 can be of any type as long as it is suitable for applying a pressure force on the terminal 47, that is to say on the base 66, in order to deform the terminal 47 from its initial configuration towards its connection configuration.

Description

La présente invention concerne une cosse de raccordement électrique à une borne de connexion électrique, un système électrique comprenant un dispositif de commutation électrique et un appareil auxiliaire connectés l'un à l'autre via un ou des câbles électriques munis d'une telle cosse de raccordement, ainsi qu'un procédé de connexion d'une telle cosse de raccordement à une borne de connexion.The present invention relates to an electrical connection terminal to an electrical connection terminal, an electrical system comprising an electrical switching device and an auxiliary device connected to each other via one or more electrical cables provided with such a terminal. connection, as well as a method of connecting such a connection terminal to a connection terminal.

Un enjeu persistant dans le domaine de la connectique et plus précisément de la connexion d'une cosse de raccordement à une borne de connexion, est d'assurer un contact électrique optimal entre la cosse et la borne de connexion, afin de garantir un contact électrique de qualité.A persistent challenge in the field of connectors and more precisely of the connection of a connection terminal to a connection terminal, is to ensure an optimal electrical contact between the terminal and the connection terminal, in order to guarantee an electrical contact. quality.

Il est ainsi connu, dans le domaine de la connectique, d'utiliser une cosse de raccordement, par exemple tel que décrit dans WO 2007/143805 A2 , et, plus généralement, une cosse de raccordement comprenant un orifice de réception de moyens de connexion de la cosse à une borne de connexion. Dans cette cosse, l'orifice est prolongé par une fente permettant l'insertion dans l'orifice d'une vis appartenant aux moyens de connexion. Plus généralement, les moyens de connexion comprennent la vis et un étrier, tandis que lors de la connexion de la cosse à la borne de connexion, la cosse est positionnée en contact avec la borne de connexion, de manière à ce que la vis passe par la fente et se retrouve dans l'orifice. Ensuite, une opération de vissage est effectuée afin que l'étrier maintienne la cosse en contact avec la borne de connexion et plus précisément avec une plage de connexion de la borne de connexion. Un tel dispositif permet de maintenir un contact électrique entre la cosse et la plage de connexion. Cependant, dans de tels dispositifs, la qualité du contact électrique est limitée. En outre, lorsque la borne de connexion est destinée à être connectée, d'une part, à un câble électrique comprenant la cosse et, d'autre part, à un conducteur électrique de puissance, il est difficile de positionner le câble électrique de puissance dans la borne de connexion et de garantir un contact électrique de qualité de la cosse et du conducteur électrique de puissance avec la plage de connexion.It is thus known, in the field of connectors, to use a connection terminal, for example as described in WO 2007/143805 A2 , and, more generally, a connection terminal comprising an orifice for receiving means for connecting the terminal to a connection terminal. In this terminal, the orifice is extended by a slot allowing the insertion into the orifice of a screw belonging to the connection means. More generally, the connection means comprise the screw and a bracket, while when connecting the terminal to the connection terminal, the terminal is positioned in contact with the connection terminal, so that the screw passes through slit and ends up in the hole. Then, a screwing operation is performed so that the caliper maintains the terminal in contact with the connection terminal and more precisely with a connection pad of the connection terminal. Such a device makes it possible to maintain electrical contact between the terminal and the connection pad. However, in such devices, the quality of the electrical contact is limited. In addition, when the connection terminal is intended to be connected, on the one hand, to an electric cable comprising the terminal and, on the other hand, to an electric power conductor, it is difficult to position the electric power cable. in the connection terminal and to guarantee a quality electrical contact of the terminal and the electrical power conductor with the connection pad.

Des cosses présentant de tels désavantages sont également décrites dans US 3,344,394 .Terminals exhibiting such disadvantages are also described in US 3,344,394 .

Le but de l'invention est donc de proposer une cosse de raccordement électrique à une borne de connexion permettant une qualité de contact améliorée de la cosse avec la borne de connexion, notamment lorsqu'un câble électrique muni de la cosse ainsi qu'un conducteur électrique de puissance sont connectés à la borne de connexion.The aim of the invention is therefore to provide an electrical connection terminal to a connection terminal allowing improved contact quality of the terminal with the connection terminal, in particular when an electric cable provided with the terminal and an electrical power conductor are connected to the connection terminal.

A cet effet, l'invention a pour objet une cosse de raccordement électrique selon la revendication 1.To this end, the invention relates to an electrical connection terminal according to claim 1.

Grâce à l'invention, les éléments en saillie sont propres à s'insérer dans la borne de connexion et plus précisément dans des parois de la borne de connexion, ce qui permet de connecter la cosse à la borne de connexion de manière inamovible et ainsi de garantir une qualité du contact électrique améliorée. En effet, le maintien inamovible de la cosse à la borne de connexion permet d'éviter toute déconnexion intempestive, non désirée, de la cosse et donc d'un conducteur électrique muni de la cosse, par rapport à la borne de connexion. En outre, le fait que la cosse est connectée de manière inamovible permet également de faciliter le raccordement d'un conducteur électrique de puissance à la borne de connexion, en plus du raccordement d'un câble électrique muni de la cosse.Thanks to the invention, the projecting elements are suitable for fitting into the connection terminal and more precisely into the walls of the connection terminal, which makes it possible to connect the terminal to the connection terminal in an irremovable manner and thus to guarantee an improved quality of the electrical contact. In fact, the immovable retention of the terminal at the connection terminal makes it possible to avoid any untimely, unwanted disconnection of the terminal and therefore of an electrical conductor provided with the terminal, relative to the connection terminal. In addition, the fact that the terminal is connected in an irremovable manner also makes it possible to facilitate the connection of an electrical power conductor to the connection terminal, in addition to the connection of an electric cable provided with the terminal.

Suivant d'autres aspects avantageux de l'invention, la cosse est selon l'une quelconque des revendications 2 à 6.According to other advantageous aspects of the invention, the terminal is according to any one of claims 2 to 6.

L'invention a également pour objet un système électrique selon la revendication 7.The subject of the invention is also an electrical system according to claim 7.

Suivant d'autres aspects avantageux de l'invention, le système électrique est selon l'une quelconque des revendications 8 à 10.According to other advantageous aspects of the invention, the electrical system is according to any one of claims 8 to 10.

L'invention a également pour objet un procédé de connexion d'une cosse de raccordement électrique à une borne de connexion électrique, selon la revendication 11.The subject of the invention is also a method for connecting an electrical connection terminal to an electrical connection terminal, according to claim 11.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront plus clairement à la lumière de la description qui va suivre, donnée uniquement à titre d'exemple non limitatif, et faite en se référant aux dessins annexés sur lesquels :

  • la figure 1 est une vue en perspective d'un système électrique conforme à l'invention comprenant un contacteur électrique et un appareil auxiliaire couplé électriquement au contacteur via un câble électrique muni d'une cosse ;
  • la figure 2 est une vue en perspective partielle de trois bornes de connexions du contacteur de la figure 1, l'une des bornes de connexion étant représentée en éclatée et la cosse étant représentée dans une configuration initiale ;
  • la figure 3 est une vue en élévation de l'une des bornes de connexion du contacteur de la figure 1, à laquelle est connecté le câble électrique muni de la cosse en configuration initiale ;
  • la figure 4 est une vue en perspective du câble électrique du système de la figure 1, pour laquelle la cosse est dans sa configuration initiale ;
  • la figure 5 est une vue en perspective de la cosse dans la configuration des figures 2 à 4.
  • la figure 6 est une vue en élévation de la cosse dans la configuration des figures 2 à 5 ;
  • la figure 7 est une vue analogue à la figure 3, pour laquelle la cosse est dans une configuration de connexion à la borne de connexion ;
  • la figure 8 est une vue en perspective de la cosse dans la configuration de la figure 7 ; et
  • la figure 9 est un organigramme d'un procédé de connexion du câble électrique et d'un conducteur électrique de puissance à l'une des bornes de connexion du contacteur de la figure 1.
The invention will be better understood and other advantages thereof will emerge more clearly in the light of the description which will follow, given solely by way of non-limiting example, and made with reference to the appended drawings in which:
  • the figure 1 is a perspective view of an electrical system according to the invention comprising an electrical contactor and an auxiliary device electrically coupled to the contactor via an electrical cable provided with a terminal;
  • the figure 2 is a partial perspective view of three connection terminals of the contactor of the figure 1 , one of the connection terminals being shown exploded and the terminal being shown in an initial configuration;
  • the figure 3 is an elevational view of one of the contactor connection terminals of the figure 1 , to which is connected the electric cable fitted with the terminal in the initial configuration;
  • the figure 4 is a perspective view of the electrical cable of the system of the figure 1 , for which the terminal is in its initial configuration;
  • the figure 5 is a perspective view of the terminal in the configuration of figures 2 to 4 .
  • the figure 6 is an elevational view of the terminal in the configuration of figures 2 to 5 ;
  • the figure 7 is a view analogous to figure 3 , for which the terminal is in a connection configuration to the connection terminal;
  • the figure 8 is a perspective view of the terminal in the configuration of the figure 7 ; and
  • the figure 9 is a flowchart of a method of connecting the electric cable and an electric power conductor to one of the contactor connection terminals of the figure 1 .

Le système électrique 10 représenté sur la figure 1 comprend un dispositif de commutation électrique 12, tel qu'un contacteur, et un appareil auxiliaire 14 couplé électriquement au dispositif de commutation 12.The electrical system 10 shown in figure 1 comprises an electrical switching device 12, such as a contactor, and an auxiliary device 14 electrically coupled to the switching device 12.

Le dispositif de commutation 12 est un contacteur triphasé 12 et comprend un boîtier 16, trois premières bornes de connexion 20 d'entrée d'un courant, également appelées « premières bornes d'entrée », et trois premières bornes de connexion 22 de sortie du courant, également appelées « premières bornes de sortie ». Le contacteur 12 est connu en soi et comprend un organe de commande, non représenté, propre à interrompre la circulation du courant entre les premières bornes d'entrée 20 et de sortie 22, c'est-à-dire entre des conducteurs électriques 24 de puissance, dont un seul est représenté à la figure 1, connectés respectivement aux premières bornes d'entrée 20 et aux deuxièmes bornes de sortie 22.The switching device 12 is a three-phase contactor 12 and comprises a housing 16, three first connection terminals 20 for input of a current, also called “first input terminals”, and three first connection terminals 22 for output. current, also called “first output terminals”. The contactor 12 is known per se and comprises a control member, not shown, capable of interrupting the flow of current between the first input 20 and output 22 terminals, that is to say between electrical conductors 24 of power, only one of which is represented in the figure 1 , respectively connected to the first input terminals 20 and to the second output terminals 22.

L'appareil auxiliaire 14 comprend quatre deuxièmes bornes de connexion d'entrée 26 et quatre deuxièmes bornes de connexion de sortie 28. L'appareil auxiliaire 14 est propre à surveiller le fonctionnement du dispositif de commutation 12. Ainsi, l'appareil auxiliaire 14 est, par exemple, propre à mesurer le courant traversant les premières bornes d'entrée 20 et de sortie 22 ou à mesurer la température des premières bornes d'entrée 20 et de sortie 22. Avantageusement, l'appareil auxiliaire 14 comprend un organe de calcul, non représenté, propre à mesurer la puissance électrique et l'énergie électrique au niveau de chaque première borne de connexion d'entrée 20 et de sortie 22. L'appareil auxiliaire 14 est généralement propre à communiquer, via une liaison sans fil ou en variante filaire, avec un concentrateur de données, non représenté.The auxiliary apparatus 14 comprises four second input connection terminals 26 and four second output connection terminals 28. The auxiliary apparatus 14 is suitable for monitoring the operation of the switching device 12. Thus, the auxiliary apparatus 14 is used. , for example, suitable for measuring the current flowing through the first input 20 and output 22 terminals or for measuring the temperature of the first input 20 and output 22 terminals. Advantageously, the auxiliary device 14 comprises a calculation member , not shown, suitable for measuring the electric power and the electric energy at the level of each first input 20 and output 22 connection terminal. The auxiliary device 14 is generally suitable for communicating, via a wireless link or in wired variant, with a data concentrator, not shown.

Sur la figure 1, seulement l'une des premières bornes de sortie 22 est connectée, via un câble électrique 32, à l'une des deuxièmes bornes de sortie 28 correspondante. Cependant le système électrique 10 à lors de son utilisation, d'une part, chacune de ses première borne d'entrée 20 qui est connectée, via un câble électrique 32 respectif, à l'une des deuxièmes bornes d'entrée 26 correspondante et, d'autre part, chacune de ses premières bornes de sortie 22 qui est connectée, via un câble électrique 32 respectif, à l'une des deuxièmes bornes de sortie 28 correspondante.On the figure 1 , only one of the first output terminals 22 is connected, via an electric cable 32, to one of the corresponding second output terminals 28. However, the electrical system 10 during its use, on the one hand, each of its first input terminal 20 which is connected, via a respective electric cable 32, to one of the corresponding second input terminals 26 and, on the other hand, each of its first output terminals 22 which is connected, via a respective electric cable 32, to one of the corresponding second output terminals 28.

Chaque première borne d'entrée 20 et de sortie 22 comprend un moyen 34, visible à la figure 2, de connexion sur elle-même des câbles électriques 32 et des conducteurs électriques de puissance 24.Each first input 20 and output 22 terminal comprises a means 34, visible at the figure 2 , connection on itself of the electric cables 32 and the electric power conductors 24.

Les premières bornes d'entrée 20 et de sortie 22 comprennent chacune un logement 36 de réception d'un câble électrique 32 et d'un conducteur électrique 24.The first input 20 and output 22 terminals each comprise a housing 36 for receiving an electric cable 32 and an electric conductor 24.

Chaque conducteur électrique de puissance 24 est connecté soit à l'une des premières bornes d'entrée 20 soit à l'une des premières bornes de sortie 22. Plus précisément, chaque conducteur électrique de puissance 24 connecté à l'une des premières bornes d'entrée 20 est relié électriquement, via le contacteur 12, au conducteur électrique de puissance 24 connecté à la première borne de sortie 22 correspondante. Chaque conducteur électrique 24 comprend une partie terminale 38 propre à être insérée dans la première borne de connexion 20, 22 correspondante.Each electrical power conductor 24 is connected either to one of the first input terminals 20 or to one of the first output terminals 22. More precisely, each electrical power conductor 24 connected to one of the first terminals d The input 20 is electrically connected, via the contactor 12, to the electrical power conductor 24 connected to the corresponding first output terminal 22. Each electrical conductor 24 comprises an end portion 38 suitable for being inserted into the corresponding first connection terminal 20, 22.

Chaque câble électrique 32 comprend un fil résistif 42, une première extrémité de connexion 44 munie d'un manchon thermorétractable 46 et d'un premier organe de connexion 47 à l'une des premières bornes de connexion 20, 22, ainsi qu'une deuxième extrémité de connexion 48 munie également d'un manchon thermorétractable 50 et d'un deuxième organe 52 de connexion à l'une des deuxièmes bornes de connexion 26, 28. Ainsi, chaque câble électrique 32 s'étend entre l'une des premières bornes de connexion d'entrée 20, ou de sortie 22 et respectivement l'une des deuxièmes bornes d'entrée 26, ou de sortie 28, correspondante.Each electric cable 32 comprises a resistive wire 42, a first connection end 44 provided with a heat-shrinkable sleeve 46 and a first connection member 47 to one of the first connection terminals 20, 22, as well as a second connection end 48 also provided with a heat-shrinkable sleeve 50 and with a second member 52 for connection to one of the second connection terminals 26, 28. Thus, each electric cable 32 extends between one of the first terminals input 20, or output 22 connection and respectively one of the second input 26, or output 28, corresponding terminals.

Chaque moyen de connexion 34 est propre à maintenir la connexion entre le conducteur électrique de puissance 24 correspondant et la première borne de connexion 20, 22 correspondante. Chaque moyen de connexion 34 comprend une vis 54 associée à un étrier 56.Each connection means 34 is suitable for maintaining the connection between the corresponding electrical power conductor 24 and the corresponding first connection terminal 20, 22. Each connection means 34 comprises a screw 54 associated with a bracket 56.

Le logement 36 est propre à recevoir le premier organe de connexion 47 et la partie terminale 38 et comprend deux parois latérales 58, 59 entre lesquelles s'étend une plage de connexion 60. Les parois latérales 58, 59 sont perpendiculaires à la plage de connexion 60.The housing 36 is suitable for receiving the first connection member 47 and the end part 38 and comprises two side walls 58, 59 between which extends a connection area 60. The side walls 58, 59 are perpendicular to the connection area. 60.

Le premier organe de connexion 47 correspond à une cosse 47 qui comprend une zone 64 de liaison du fil résistif 42 et une base 66. La cosse 47 est obtenue, par exemple, par pliage et découpage d'une plaque de métal. La cosse 47 s'étend suivant un axe longitudinal X47.The first connection member 47 corresponds to a terminal 47 which comprises a zone 64 for connecting the resistive wire 42 and a base 66. The terminal 47 is obtained, for example, by bending and cutting a metal plate. The terminal 47 extends along a longitudinal axis X47.

La vis 54 et l'étrier 56 sont propres à exercer un effort de pression sur la cosse 47 et la partie terminale 38, afin de maintenir un contact électrique entre la plage de connexion 60, la partie terminale 38 et la cosse 47.The screw 54 and the bracket 56 are suitable for exerting a pressure force on the terminal 47 and the end part 38, in order to maintain an electrical contact between the connection pad 60, the end part 38 and the terminal 47.

La vis 54 est propre à être vissée ou dévissée afin de maintenir le conducteur électrique de puissance 24 correspondant connecté électriquement à la plage de connexion 60 correspondante ou respectivement afin de déconnecter le conducteur électrique de puissance 24 correspondant par rapport à la plage de connexion 60 correspondante.The screw 54 is suitable for being screwed or unscrewed in order to keep the corresponding electrical power conductor 24 electrically connected to the corresponding connection area 60 or respectively in order to disconnect the corresponding electrical power conductor 24 from the corresponding connection area 60 .

L'étrier 56 et la plage de connexion 60 sont distants l'un de l'autre et forme un espace E de réception de la cosse 47 et du conducteur électrique de puissance 24.The bracket 56 and the connection pad 60 are distant from each other and form a space E for receiving the terminal 47 and the electrical power conductor 24.

La plage de connexion 60 comprend un trou 65 de réception de la vis 54.The connection pad 60 includes a hole 65 for receiving the screw 54.

La zone de liaison 64 est de forme adaptée pour maintenir une liaison électrique entre la base 66 et le fil résistif 42.The connection zone 64 is of suitable shape to maintain an electrical connection between the base 66 and the resistive wire 42.

Comme visible aux figures 2 à 8, la cosse 47 et plus précisément sa base 66, est plastiquement déformable entre deux configurations, plus précisément depuis une configuration initiale présentée aux figures 2 à 6 vers une configuration de connexion à la première borne de connexion 20, 22 correspondante, représentée aux figures 7 et 8.As visible to figures 2 to 8 , the terminal 47 and more precisely its base 66, is plastically deformable between two configurations, more precisely from an initial configuration presented to figures 2 to 6 to a connection configuration to the corresponding first connection terminal 20, 22, shown in figures 7 and 8 .

La base 66 comprend une première partie 68 et une deuxième partie 70. La base 66 comprend également un orifice 72 de passage de la vis 54 défini entre les première 68 et deuxième 70 parties.The base 66 comprises a first part 68 and a second part 70. The base 66 also comprises an orifice 72 for passage of the screw 54 defined between the first 68 and second 70 parts.

Les première 68 et deuxième 70 parties comprennent respectivement un premier côté latéral 74 et un deuxième côté latéral 76, qui appartiennent à un premier plan P de la cosse 47 et définissent ce premier plan P. Les premier et deuxième côté latéraux 74, 76 s'étendent globalement suivant l'axe longitudinal X47. La distance entre les deux côtés latéraux 74, 76, lorsque la cosse est en configuration initiale, a une première valeur D74i qui est inférieure à sa valeur D74c lorsque la cosse est en configuration de connexion.The first 68 and second 70 parts respectively comprise a first lateral side 74 and a second lateral side 76, which belong to a first plane P of the terminal 47 and define this first plane P. The first and second lateral sides 74, 76 s' extend generally along the longitudinal axis X47. The distance between the two lateral sides 74, 76, when the terminal is in the initial configuration, has a first value D74i which is less than its value D74c when the terminal is in the connection configuration.

Lorsque la cosse 47 est positionnée afin d'être connectée à l'une des premières bornes de connexion 20, 22, le premier côté latéral 74 est en regard de l'une 59 des deux parois latérales, tandis que le deuxième côté latéral 76 est en regard de l'autre 58 paroi latérale.When the terminal 47 is positioned so as to be connected to one of the first connection terminals 20, 22, the first lateral side 74 is opposite one 59 of the two side walls, while the second lateral side 76 is opposite the other 58 side wall.

Les première 68 et deuxième 70 parties comprennent également chacune une première 78 et une deuxième 80 ailettes qui délimitent entre elles, en regard de l'orifice 72, une fente 82.The first 68 and second 70 parts also each include a first 78 and a second 80 fins which define between them, facing the orifice 72, a slot 82.

Comme représenté aux figures 2 et 6, en configuration initiale de la cosse 47, les première 68 et deuxième 70 parties sont inclinées chacune par rapport au premier plan P et reliées l'une à l'autre, du côté de la zone de connexion 64, afin de former une arête 84 de la cosse 47. Ainsi, un premier angle α1 mesuré entre les première 68 et deuxième 70 parties, du côté du premier plan P, est compris entre 90° et 170°, de préférence entre 120° et 150°.As shown in figures 2 and 6 , in the initial configuration of the terminal 47, the first 68 and second 70 parts are each inclined relative to the first plane P and connected to each other, on the side of the connection zone 64, in order to form an edge 84 of the terminal 47. Thus, a first angle α1 measured between the first 68 and second 70 parts, on the side of the first plane P, is between 90 ° and 170 °, preferably between 120 ° and 150 °.

Lorsque la cosse 47 est dans sa configuration initiale et est inséré dans l'une des premières bornes de connexion 20, 22, la base 66 correspondante a, comme présenté la figure 3, son arête 84 orientée vers la plage de connexion 60 et ses côtés latéraux 74, 76 orientées vers l'étrier 56. En d'autres termes, la base 66 a son arête 84 qui est plus proche de la plage de connexion 60 que ses côtés latéraux 74, 76.When the terminal 47 is in its initial configuration and is inserted into one of the first connection terminals 20, 22, the corresponding base 66 has, as shown in figure 3 , its edge 84 oriented towards the connection pad 60 and its lateral sides 74, 76 oriented towards the yoke 56. In other words, the base 66 has its edge 84 which is closer to the connection pad 60 than its lateral sides 74, 76.

En outre, comme présenté à la figure 6, en configuration de connexion de la cosse 47, le premier angle α1 est égal à 180° avec une marge d'erreur de plus ou moins 5°. Ainsi, en configuration de connexion de la cosse 47, les première 68 et deuxième 70 parties sont positionnées contre la plage de connexion 60 et s'étendent parallèlement ou quasi-parallèlement à moins de 5° près, à la plage de connexion 60 et au premier plan P.In addition, as presented at the figure 6 , in the connection configuration of the terminal 47, the first angle α1 is equal to 180 ° with a margin of error of plus or minus 5 °. Thus, in the connection configuration of the terminal 47, the first 68 and second 70 parts are positioned against the connection pad 60 and extend parallel or almost parallel to within less than 5 °, to the connection pad 60 and to the foreground P.

L'orifice 72 est un orifice traversant aligné avec le trou de la plage de connexion 60 lorsque la cosse 47 est connectée à la plage de connexion 60.The orifice 72 is a through hole aligned with the hole in the connection pad 60 when the terminal 47 is connected to the connection pad 60.

Les premier 74 et deuxième 76 côtés latéraux comprennent chacun deux éléments 86 en saillie par rapport au reste de la base 66 et au côté latéral 74, 76 correspondant. Les éléments en saillie 86 sont orientés respectivement en direction des parois latérales 59, 58, lorsque la cosse 47 est connectée à la plage de connexion 60.The first 74 and second 76 lateral sides each comprise two elements 86 projecting from the remainder of the base 66 and from the corresponding lateral side 74, 76. The projecting elements 86 are oriented respectively in the direction of the side walls 59, 58, when the terminal 47 is connected to the connection pad 60.

En configuration initiale de la cosse 47, les première 78 et deuxième 80 ailettes sont inclinées par rapport au premier plan P et la fente 82 correspond à une fente d'accès à l'orifice pour le moyen de connexion 34, plus précisément pour la vis 54. En effet, la largeur minimale de la fente 82, mesurée parallèlement au premier plan P et perpendiculairement à l'un des côtés latéraux 74, 76 a, dans la configuration initiale, une valeur W82i supérieure au diamètre D54 de la vis. En configuration initiale, un deuxième angle α2 entre chaque ailette 78, 80 et le premier plan P, mesuré du côté du plan P, est compris entre 20° et 70°, de préférence entre 40° et 60°.In the initial configuration of the terminal 47, the first 78 and second 80 fins are inclined relative to the first plane P and the slot 82 corresponds to an access slot to the orifice for the connection means 34, more precisely for the screw 54. Indeed, the minimum width of the slot 82, measured parallel to the first plane P and perpendicular to one of the lateral sides 74, 76 has, in the initial configuration, a value W82i greater than the diameter D54 of the screw. In the initial configuration, a second angle α2 between each fin 78, 80 and the first plane P, measured on the side of the plane P, is between 20 ° and 70 °, preferably between 40 ° and 60 °.

Les première 78 et deuxième 80 ailettes sont propres à être aplaties par l'étrier 56 pendant la déformation plastique de la cosse lors de son passage de la configuration initiale à la configuration de connexion. Ainsi, en configuration de connexion de la cosse 47, la largeur minimale de la fente 82, mesurée parallèlement au premier plan P et perpendiculairement à l'un des côtés latéraux 74, 76, a une valeur W82c inférieure au diamètre de la vis D54. De même, en configuration de connexion, le deuxième angle α2 est compris entre 0° et 10°.The first 78 and second 80 fins are suitable for being flattened by the stirrup 56 during the plastic deformation of the terminal during its passage from the initial configuration to the connection configuration. Thus, in the connection configuration of the terminal 47, the minimum width of the slot 82, measured parallel to the first plane P and perpendicular to one of the lateral sides 74, 76, has a value W82c less than the diameter of the screw D54. Likewise, in the connection configuration, the second angle α2 is between 0 ° and 10 °.

La largeur de la base 66, mesurée en configuration initiale, au niveau de chaque élément en saillie 86, parallèlement au plan P et perpendiculairement au côté latéral 74, 76 correspondant, a une valeur W66i inférieure ou égale à la distance D58 mesurée entre les deux parois latérales 58, 59, lorsque la cosse 47 est connectée à la première borne de connexion 20, 22, au niveau de l'élément en saillie 86 correspondant et perpendiculairement à la paroi latérale 58, 59 correspondante.The width of the base 66, measured in the initial configuration, at the level of each projecting element 86, parallel to the plane P and perpendicular to the lateral side 74, 76 corresponding, has a value W66i less than or equal to the distance D58 measured between the two side walls 58, 59, when the terminal 47 is connected to the first connection terminal 20, 22, at the level of the corresponding projecting element 86 and perpendicular to the corresponding side wall 58, 59.

La largeur de la base 66, mesurée en configuration de connexion de la cosse 47, au niveau de chaque élément en saillie 86, parallèlement au plan P et perpendiculairement au côté latéral 74, 76 correspondant, a une valeur W66c supérieure à la distance D58 entre les deux parois latérales 58, 59.The width of the base 66, measured in the connection configuration of the terminal 47, at each protruding element 86, parallel to the plane P and perpendicular to the corresponding lateral side 74, 76, has a value W66c greater than the distance D58 between the two side walls 58, 59.

Ainsi, les éléments en saillie 86 sont propres à être insérés dans les parois latérales 58, 59, en configuration de connexion de la cosse 47, puisque la valeur W66c est supérieure à la distance D58.Thus, the projecting elements 86 are suitable for being inserted into the side walls 58, 59, in the connection configuration of the terminal 47, since the value W66c is greater than the distance D58.

Les éléments en saillie 86 définissent des griffes propres à être insérées dans la paroi latérale 58, 59 correspondante lorsque la cosse 47 est déformée en configuration de connexion. Les éléments en saillie 86 sont positionnés au niveau de quatre coins formés par la base 66.The projecting elements 86 define claws suitable for being inserted into the corresponding side wall 58, 59 when the terminal 47 is deformed in the connection configuration. The protruding elements 86 are positioned at four corners formed by the base 66.

La largeur de chaque élément en saillie 86, mesurée perpendiculairement au côté latéral 74, 76 correspondant a, par exemple, une valeur W86 inférieure à 3 mm, de préférence comprise entre 0,4 mm et 1,2 mm.The width of each protruding member 86, measured perpendicular to the corresponding lateral side 74, 76 has, for example, a value W86 of less than 3 mm, preferably between 0.4 mm and 1.2 mm.

A la figure 8, un organigramme d'un procédé de connexion du câble électrique 32 et de l'un des conducteurs électriques de puissance 24 à l'une des premières bornes de connexion 20, 22 est représenté.To the figure 8 , a flowchart of a method of connecting the electric cable 32 and one of the electric power conductors 24 to one of the first connection terminals 20, 22 is shown.

Lors d'une première étape 100, la cosse 47 est positionnée sur la première borne de connexion 20, 22 correspondante afin d'être connectée à celle-ci. Plus précisément, les ailettes 78, 82 sont mises en contact avec la plage de connexion 60 et les éléments en saillie 86 sont orientés vers l'étrier 56. La cosse 47 est insérée au niveau de la première borne de connexion 20, 22 correspondante, de manière à ce que la vis 54 soit positionnée dans l'orifice 72. Plus précisément, la vis 54 est déjà installée et disposée dans le trou 65 et la cosse 47 est insérée dans la borne de connexion 20, 22 correspondante, afin que la vis 54 traverse la fente 82 et se retrouvent dans l'orifice 72.During a first step 100, the terminal 47 is positioned on the corresponding first connection terminal 20, 22 in order to be connected to the latter. More precisely, the fins 78, 82 are brought into contact with the connection pad 60 and the projecting elements 86 are oriented towards the yoke 56. The terminal 47 is inserted at the level of the corresponding first connection terminal 20, 22, so that the screw 54 is positioned in the hole 72. More precisely, the screw 54 is already installed and disposed in the hole 65 and the terminal 47 is inserted into the corresponding connection terminal 20, 22, so that the screw 54 passes through slot 82 and is found in hole 72.

Puis, lors d'une étape 102 suivante, la cosse 47, et plus précisément sa base 66, est aplatie. En effet, le moyen de connexion 34 vient exercer un effort de pression sur la base 66 afin de déformer plastiquement la cosse depuis sa configuration initiale vers sa configuration de connexion. En d'autres termes, une opération de vissage de la vis 54 est réalisée, afin que l'étrier 56 se déplace en direction de la plage de connexion 60 et aplatisse la base 66, c'est-à-dire les première 68 et deuxième 70 parties. Lors de cette opération de vissage, les éléments en saillie 86 viennent s'insérer dans ou griffer les parois latérales 58, 59 correspondantes et la cosse 47 est ainsi immobilisée de manière inamovible à la première borne de connexion 20, 22 correspondante. Par ailleurs, suite à l'étape 102, la cosse 47 est globalement parallèle à la plage de connexion 60 et aplatie au fond de la première borne de connexion 20, 22, c'est-à-dire contre la plage de connexion 60. De même, au cours de l'étape 102, les ailettes 78, 80 sont également aplaties de manière à réduire la largeur minimale de la fente 82 et à empêcher tout arrachement de la cosse 47 par rapport à la première borne de connexion 20, 22 correspondante.Then, during a next step 102, the terminal 47, and more precisely its base 66, is flattened. Indeed, the connection means 34 exert a pressure force on the base 66 in order to plastically deform the terminal from its initial configuration to its connection configuration. In other words, an operation of screwing the screw 54 is carried out, so that the yoke 56 moves in the direction of the connection pad 60 and flattens the base 66, that is to say the first 68 and second 70 parts. During this screwing operation, the protruding elements 86 are inserted into or scratch the corresponding side walls 58, 59 and the terminal 47 is thus immovably immobilized to the corresponding first connection terminal 20, 22. Furthermore, following step 102, the terminal 47 is generally parallel to the connection pad 60 and flattened at the bottom of the first connection terminal 20, 22, that is to say against the connection pad 60. Likewise, during step 102, the fins 78, 80 are also flattened so as to reduce the minimum width of the slot 82 and to prevent any tearing of the terminal 47 relative to the first connection terminal 20, 22 corresponding.

Généralement, précédemment ou suite à l'étape 102, le câble électrique 32, destiné à être connecté à la première borne de connexion 20, 22 correspondante via sa cosse 47, est également connecté au niveau de sa deuxième extrémité 48, via le deuxième organe de connexion 52 à la deuxième borne de connexion 26, 28 correspondante.Generally, previously or following step 102, the electric cable 32, intended to be connected to the corresponding first connection terminal 20, 22 via its terminal 47, is also connected at its second end 48, via the second member connection 52 to the corresponding second connection terminal 26, 28.

Ensuite, lors d'une étape 104, la vis 54 est dévissée et l'étrier 56 se déplace dans une direction opposée à la plage de connexion 60. Suite à l'étape 104 de dévissage, l'espace E est propre à recevoir le conducteur électrique de puissance 24 correspondant. Plus précisément, l'espace de réception E est formé entre d'une part la plage de connexion 60 et la cosse 47 et, d'autre part, l'étrier 56.Then, during a step 104, the screw 54 is unscrewed and the caliper 56 moves in a direction opposite to the connection pad 60. Following the unscrewing step 104, the space E is suitable for receiving the corresponding electric power conductor 24. More precisely, the receiving space E is formed between, on the one hand, the connection pad 60 and the terminal 47 and, on the other hand, the yoke 56.

Généralement, les étapes 100, 102 et 104 sont réalisées pour chaque première borne de connexion 20, 22 et suite à l'étape 104 un opérateur dispose du système électrique 10, qu'il va installer dans une installation électrique entre les conducteurs électriques de puissance 24.Generally, steps 100, 102 and 104 are carried out for each first connection terminal 20, 22 and following step 104 an operator has the electrical system 10, which he will install in an electrical installation between the electrical power conductors. 24.

Puis, lors d'une étape 106, le conducteur électrique de puissance 24 et plus précisément, la partie terminale 38, est inséré dans l'espace de réception E, afin d'être connecté à la première borne de connexion 20, 22 correspondante.Then, during a step 106, the electrical power conductor 24 and more precisely, the terminal part 38, is inserted into the reception space E, in order to be connected to the corresponding first connection terminal 20, 22.

Ensuite, au cours d'une étape 108, une opération de vissage de la vis 54 est effectuée afin de déplacer l'étrier 56 vers la plage de connexion 60 et la cosse 47 et de maintenir la partie terminale 38 connectée à la plage de connexion 60 et coincée entre l'étrier 56 et la cosse 47.Then, during a step 108, an operation of screwing the screw 54 is carried out in order to move the caliper 56 towards the connection area 60 and the terminal 47 and to keep the end part 38 connected to the connection area. 60 and wedged between the caliper 56 and the terminal 47.

Le fait, qu'en configuration initiale de la cosse 47, les première 68 et deuxième 70 parties sont inclinées, permet, lors de la déformation de la cosse en configuration de connexion, que les éléments en saillie 86 viennent exercer un effort de pression contre les parois latérales 58, 59 correspondantes et s'insérer dans ces parois, sachant que les parois 58, 59 sont généralement en matériau plastique.The fact that in the initial configuration of the terminal 47, the first 68 and second 70 parts are inclined, allows, during the deformation of the terminal in the connection configuration, that the projecting elements 86 come to exert a pressure force against the corresponding side walls 58, 59 and fit into these walls, knowing that the walls 58, 59 are generally made of plastic material.

De plus, l'inclinaison des première 78 et deuxième 80 ailettes permet de former la fente 82 qui est propre, en configuration initiale de la cosse 47, à laisser passer la vis 54 afin que celle-ci soit positionnée dans l'orifice 72. En effet, la vis 54 est en place dans chaque première borne de connexion 20, 22, préalablement à la connexion de la cosse 47 sur la plage de connexion 60 correspondante. De plus, le fait que les première 78 et deuxième 80 ailettes sont inclinées permet, lors de la déformation de la cosse 47 en configuration de connexion, de réduire la largeur de la fente 82 afin d'emprisonner la vis 54 dans l'orifice 72 et d'empêcher toute déconnexion de la cosse 47 de la première borne de connexion 20, 22 correspondante.In addition, the inclination of the first 78 and second 80 fins makes it possible to form the slot 82 which is suitable, in the initial configuration of the terminal 47, to allow the screw 54 to pass so that the latter is positioned in the orifice 72. Indeed, the screw 54 is in place in each first connection terminal 20, 22, prior to the connection of the terminal 47 to the corresponding connection pad 60. In addition, the fact that the first 78 and second 80 fins are inclined makes it possible, during the deformation of the terminal 47 in the connection configuration, to reduce the width of the slot 82 in order to trap the screw 54 in the orifice 72 and to prevent any disconnection of the terminal 47 from the corresponding first connection terminal 20, 22.

Grâce à l'effort de pression exercé par la vis 54 et l'étrier 56 et à la déformation de la cosse 47 en configuration de connexion, la mise à plat de la cosse 47 est garantie, ce qui permet, suite à l'opération de dévissage 104, de laisser l'espace E entre la plage de connexion 60 et l'étrier 56. Le volume de l'espace E est optimisé, ce qui permet de faciliter l'accès à la première borne de connexion 20, 22 correspondante, suite à la connexion de la cosse 47. Ainsi l'espace E permet de faciliter la connexion du conducteur électrique de puissance 24, c'est à dire de sa partie terminale 38, à la première borne de connexion correspondante 20, 22. Puisque la connexion du conducteur électrique 24 est facilité et que la cosse est mise à plat contre la plage de connexion 60 correspondante, la qualité du contact électrique entre la plage de connexion60, la cosse 47 et le conducteur électrique de puissance 24 est garantie et améliorée.Thanks to the pressure force exerted by the screw 54 and the yoke 56 and the deformation of the terminal 47 in the connection configuration, the flattening of the terminal 47 is guaranteed, which allows, following the operation unscrewing 104, to leave the space E between the connection pad 60 and the bracket 56. The volume of the space E is optimized, which makes it possible to facilitate access to the corresponding first connection terminal 20, 22 , following the connection of the terminal 47. Thus the space E makes it possible to facilitate the connection of the electrical power conductor 24, that is to say of its terminal part 38, to the first corresponding connection terminal 20, 22. Since the connection of the electrical conductor 24 is facilitated and the terminal is flattened against the corresponding connection pad 60, the quality of the electrical contact between the connection pad 60, the terminal 47 and the electrical power conductor 24 is guaranteed and improved.

De plus, les première 78 et deuxième 80 ailettes, ainsi que les éléments en saillie 86 garantissent un caractère inamovible à la cosse 47 par rapport à la première borne de connexion 20, 22 correspondante, afin de garantir la connexion entre l'appareil auxiliaire 14 et le contacteur 12. Les fils résistifs 42 sont indémontables et ainsi la connexion entre le dispositif de commutation 12 et l'appareil auxiliaire 14 est garantie indémontable par l'opérateur.In addition, the first 78 and second 80 fins, as well as the projecting elements 86 ensure that the terminal 47 is immovable with respect to the corresponding first connection terminal 20, 22, in order to guarantee the connection between the auxiliary device 14 and the contactor 12. The resistive wires 42 cannot be dismantled and thus the connection between the switching device 12 and the auxiliary device 14 is guaranteed non-removable by the operator.

Le système électrique 10 présenté à la figure 1, permet la commande de batteries de condensateurs triphasés, qui favorisent la compensation de l'énergie réactive occasionnée par des charges fortement inductives dans une installation électrique. Plus précisément, grâce aux batteries de condensateurs, le courant appelé sur un réseau électrique alimentant l'installation électrique est réduit. Les fils résistifs 42 permettent d'absorber des pointes de courant traversant les premières bornes de connexion 20,22.The electrical system 10 presented at the figure 1 , allows the control of three-phase capacitor banks, which favor the compensation of the reactive energy caused by strongly inductive loads in an electrical installation. More precisely, thanks to capacitor banks, the current drawn on an electrical network supplying the electrical installation is reduced. The resistive wires 42 make it possible to absorb current peaks passing through the first connection terminals 20, 22.

En variante, la cosse 47 permet la connexion du câble électrique 32 ou d'un autre type de câble électrique à tout type de borne de connexion comprenant une plage de connexion et des parois latérales, similaires à la plage de connexion 60 et aux parois latérales 58, 59.As a variant, the terminal 47 allows the connection of the electric cable 32 or of another type of electric cable to any type of connection terminal comprising a connection pad and side walls, similar to the connection pad 60 and to the side walls 58, 59.

Selon une autre variante, le dispositif de commutation 12 est un contacteur monophasé comprenant une seule ou deux premières bornes d'entrée et une seule ou deux premières bornes de sortie.According to another variant, the switching device 12 is a single-phase contactor comprising a single or two first input terminals and a single or two first output terminals.

Selon une autre variante, le dispositif de commutation 12 est, par exemple, un disjoncteur.According to another variant, the switching device 12 is, for example, a circuit breaker.

Selon une autre variante, une seul des première 68 et deuxième 70 parties comprend une ailette formant avec le reste de la cosse la fente 82.According to another variant, only one of the first 68 and second 70 parts comprises a fin forming with the rest of the terminal the slot 82.

Selon une autre variante, chaque côté latéral 74, 76 comprend un unique élément en saillie 86.According to another variant, each lateral side 74, 76 comprises a single projecting element 86.

Selon une autre variante, uniquement un seul des côtés latéraux 74, 76 comprend un ou plusieurs éléments en saillie 86.According to another variant, only one of the lateral sides 74, 76 comprises one or more projecting elements 86.

Selon une autre variante, des éléments en saillie sont disposés sur toute la longueur des côtés latéraux 74, 76 et la largeur des éléments en saillie, mesurée perpendiculairement aux parois latérales 58, 59, varie de manière croissante ou décroissante le long des côtés latéraux 74, 76.According to another variant, protruding elements are arranged over the entire length of the lateral sides 74, 76 and the width of the protruding elements, measured perpendicular to the side walls 58, 59, varies increasing or decreasing along the lateral sides 74 , 76.

Selon une autre variante, lorsque la cosse 47 est inséré dans l'une des premières bornes de connexion 20, 22, précédemment à sa connexion à l'une des premières bornes de connexion 20, 22, la base 66 correspondante à son arête 84 orientée vers l'étrier 56 et ses côtés latéraux 74, 76 en contact avec la plage de connexion 60.According to another variant, when the terminal 47 is inserted into one of the first connection terminals 20, 22, prior to its connection to one of the first connection terminals 20, 22, the base 66 corresponding to its edge 84 oriented towards the caliper 56 and its lateral sides 74, 76 in contact with the connection pad 60.

Le moyen de connexion 34 peut être de tout type tant qu'il est propre à appliquer un effort de pression sur la cosse 47, c'est-à-dire sur la base 66, afin de déformer la cosse 47 depuis sa configuration initiale vers sa configuration de connexion.The connection means 34 can be of any type as long as it is suitable for applying a pressure force on the terminal 47, that is to say on the base 66, in order to deform the terminal 47 from its initial configuration towards its connection configuration.

Les différentes variantes décrites ci-dessus peuvent être combinées entre elles totalement ou partiellement, pour donner lieu à d'autres modes de réalisation de l'invention.The various variants described above can be combined with one another totally or partially, to give rise to other embodiments of the invention.

Claims (11)

  1. A spade connector (47) for connecting to an electrical connection terminal (20, 22), the spade connector comprising a connecting zone (64) for connecting to an electrical wire (42) and a base (66), the base (66) comprising an orifice (72) for the passage of a connecting means (34) and two lateral sides (74, 76) extending globally along a longitudinal axis (X47) of the spade connector, the base (66) comprising, on at least one of its lateral sides (74, 76), at least one element (86) protruding relative to the corresponding lateral side and the rest of the base (66), characterized in that the base (66) comprises a first part (68) and a second part (70) each defining one of the lateral sides (74, 76) which are both comprised in a first plane (P) of the spade connector (47), and in that the spade connector (47) is plastically deformable from an initial configuration, in which the first (68) and second (70) parts are each inclined relative to the first plane (P), to a connecting configuration for connection to the connection terminal (20, 22), and in that a distance between the two lateral sides (74, 76) has a first value (D74i) when the spade connector is in the initial configuration that is below a second value (D74c) of that distance when the spade connector is in the connecting configuration.
  2. The spade connector according to claim 1, characterized in that the base (66) comprises, on each lateral side (74, 76), two elements (86) protruding relative to the rest of the base (66).
  3. The spade connector according to claim 1 or 2, characterized in that in the connecting configuration, the protruding element(s) (86) extend generally in a direction parallel to the first plane (P) and perpendicular to the corresponding lateral side (74, 76).
  4. The spade connector according to claim 3, characterized in that:
    - in the initial configuration, a first angle (α1) measured between the first (68) and second (70) parts, on the side of the first plane, is comprised between 90° and 170°, preferably between 120° and 150°, and
    - in the connecting configuration, the first angle (α1) is equal to 180° with an error margin of plus or minus 5°.
  5. The spade connector according to claim 4, characterized in that:
    - at least one of the first (68) and second (70) parts comprises a fin (78, 80) forming, with the rest of the spade connector, an orifice (72) access slot (82) for the connecting means (34),
    - in the initial configuration, each fin (78, 80) is inclined relative to the first plane (P) and a second angle (α2) measured between each fin (78, 80) and the first plane (P), on the side of the first plane (P), is comprised between 20° and 70°, preferably between 40° and 60°, and
    - in the connecting configuration, the second angle (α2) is comprised between 0° and 10°.
  6. The spade connector according to one of claims 3 to 5, characterized in that the width of each protruding element (86), measured perpendicular to the corresponding lateral side (74, 76) and parallel to the first plane (P), has a value (W86) of less than 3 mm, preferably comprised between 0.4 mm and 1.2 mm.
  7. An electrical system (10) comprising at least one electrical connection terminal (20, 22) and at least one spade connector (47) for connecting to the or one of the electrical connection terminals, each connection terminal (20, 22) comprising a connecting means (34) and a housing (36) for receiving the corresponding spade connector (47), the housing (36) comprising a connecting pad (60) and two lateral walls (58, 59) between which the connecting pad extends (60), characterized in that each spade connector (47) is according to one of claims 1 to 6 and in that the protruding element(s) (86) are able to be inserted into one of the lateral walls (58, 59), during the connection of each spade connector (47) to the corresponding connection terminal (20, 22).
  8. The system according to claim 7, characterized in that, during the connection of each spade connector (47) to the corresponding connection terminal (20, 22), the corresponding connecting means (34) is able to deform the spade connector (47) plastically from its initial configuration to its connecting configuration for connection to the connection terminal (20, 22).
  9. The system according to claim 8, characterized in that the width of the base, measured in the initial configuration, at each protruding element (86), parallel to the first plane and perpendicular to the corresponding lateral side (74,76), has a value (W66i) less than or equal to the distance (D58) between the two lateral walls (58, 59), measured when the spade connector is connected to the connection terminal (20, 22), at the corresponding protruding element (86) and perpendicular to the corresponding lateral wall (58, 59), and in that the same width of the base, measured in the connecting configuration, has a value (W66c) greater than the distance (D58) between the two lateral walls.
  10. The system according to claim 8 or 9, each spade connector being according to claim 5, characterized in that the connecting means comprises a screw, in that in the initial configuration of the spade connector, the minimum width of the slot (82) has a value (W82i) greater than the diameter (D54) of the screw (54), and in that in the connecting configuration of the spade connector, the minimum width of the slot (82) has a value (W82c) smaller than the diameter (D54) of the screw (54).
  11. A method for connecting a spade connector (47) for connecting to an electrical connection terminal (20, 22), the spade connector comprising a connecting zone (64) for connecting to an electrical wire (42) and a base (66), the base (66) comprising an orifice (72) for the passage of a connecting means (34) and a first part (68) and a second part (70) each defining a lateral side (74, 76), the two lateral sides (74, 76) extending globally along a longitudinal axis (X47) of the spade connector and being both comprised in a first plane (P) of the spade connector (47), the connection terminal (20, 22) including the connecting means (34) and a housing (36) for receiving the spade connector (47), the housing (36) comprising a connecting pad (60) and two lateral walls (58, 59) between which the connecting pad (60) extends, the method comprising a step (102) for connecting the spade to the connection terminal (20, 22), during which the spade connector is plastically deformed from an initial configuration, in which the first (68) and second (70) parts are each inclined relative to the first plane (P), to a connecting configuration for connection to the connection terminal and at least one element (86), protruding with respect to a lateral side of the base (66), is inserted into one of the lateral walls (58, 59), a distance between the two lateral sides (74, 76) having a first value (D74i) when the spade connector is in the initial configuration, which is smaller than a second value (D74c) of that distance when the spade connector is in the connecting configuration.
EP14197686.0A 2013-12-13 2014-12-12 Lug for electrical connection to a connection terminal, associated electrical system and method for connecting such a lug to a connection terminal Active EP2884591B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1362631A FR3015132B1 (en) 2013-12-13 2013-12-13 ELECTRICAL CONNECTING TERMINAL WITH CONNECTION TERMINAL, ASSOCIATED ELECTRICAL SYSTEM AND METHOD FOR CONNECTING SUCH TERMINAL TO CONNECTION TERMINAL

Publications (2)

Publication Number Publication Date
EP2884591A1 EP2884591A1 (en) 2015-06-17
EP2884591B1 true EP2884591B1 (en) 2020-09-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP14197686.0A Active EP2884591B1 (en) 2013-12-13 2014-12-12 Lug for electrical connection to a connection terminal, associated electrical system and method for connecting such a lug to a connection terminal

Country Status (3)

Country Link
EP (1) EP2884591B1 (en)
CN (1) CN204793320U (en)
FR (1) FR3015132B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344394A (en) * 1966-05-16 1967-09-26 Zinsco Electrical Products Limited engagement lug assembly
US6242993B1 (en) * 1995-03-13 2001-06-05 Square D Company Apparatus for use in arcing fault detection systems
BRPI0602294A (en) * 2006-06-14 2008-01-29 Tyco Electronics Brasil Ltda idc terminal with closed configuration
DE102006049810B4 (en) * 2006-10-17 2008-07-10 Siemens Ag Circuit breaker, in particular molded case circuit breaker, and auxiliary conductor connection for a circuit breaker

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2884591A1 (en) 2015-06-17
FR3015132A1 (en) 2015-06-19
CN204793320U (en) 2015-11-18
FR3015132B1 (en) 2017-03-10

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