EP2518833B1 - Spring-mounted connection terminal - Google Patents

Spring-mounted connection terminal Download PDF

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Publication number
EP2518833B1
EP2518833B1 EP12350001.9A EP12350001A EP2518833B1 EP 2518833 B1 EP2518833 B1 EP 2518833B1 EP 12350001 A EP12350001 A EP 12350001A EP 2518833 B1 EP2518833 B1 EP 2518833B1
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EP
European Patent Office
Prior art keywords
spring
face
electrical
plate
apron
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
EP12350001.9A
Other languages
German (de)
French (fr)
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EP2518833A1 (en
Inventor
Fabrice Vaquette
Patrice Maninchedda
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.)
Auxel SAS
Original Assignee
Auxel SAS
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Publication date
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Publication of EP2518833A1 publication Critical patent/EP2518833A1/en
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Publication of EP2518833B1 publication Critical patent/EP2518833B1/en
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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
    • H01R4/48185—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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/44—Means for preventing access to live contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/484—Spring housing details
    • H01R4/4842—Spring housing details the spring housing being provided with a single opening for insertion of a spring-activating tool
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4846—Busbar details
    • 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
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/2408—Modular blocks

Definitions

  • the invention relates to a spring-loaded terminal for an electrical appliance.
  • electrical appliances are used which serve, for example to the protection of the distribution of electrical current in a room for example to supply the power outlets of the premises or a specific device (washing machine or oven etc.). .).
  • These devices have input terminals and output terminals.
  • Electrical conductors are electrically connected to said terminals.
  • the terminal has a female portion of conductive material in which the stripped end of a conductor is engaged and with an application means, this stripped end is brought into contact with the female part to establish the electrical contact.
  • the contact must be sufficient otherwise a contact resistance is formed which can cause a rise in temperature of the device and a risk
  • a spring is used instead of a screw.
  • the spring exerts a force of application constantly while the screws loosen and impose a tightening operation periodically.
  • Another advantage is that the screwing and unscrewing of the screw takes time and the application force depends on the operator while the spring is fast and the force is induced by the only characteristics of the spring.
  • the spring being housed in an insulating envelope, it is accessible through a window through which a tool is introduced to push on the spring.
  • This piece is placed on the path of the tool so that the tool must first push the piece that comes into contact with the spring will move the spring and allow the insertion of the stripped end of the conductor.
  • the piece must be hinged to the case for example by a hinge film.
  • the invention proposes a solution which in particular simplifies the manufacture.
  • the invention relates to an electrical terminal according to claim 1.
  • an electrical apparatus for distributing current provided with at least one electrical terminal serving as a connection point to an electrical conductor whose end is stripped.
  • the terminal comprises a housing 1 made of insulating material housing a flat metal spring 2 shaped in a loop having a contact surface 2A intended to bear on the bare end 3 of an electrical conductor and a working surface 2B accessible to a tool engaged through a window 4.
  • a tool is introduced through the window to exert pressure on the spring at the operating face 2B to move the contact face and slide the conductor to the appropriate position or remove it.
  • the spring 2 is a flat metal strip having elastic characteristics and shaped according to the housing in which the strip is placed and in the manner of contacting the electrical conductor.
  • the spring in place forms a loop and comprises a substantially planar base 2C having a 2D cut in which is inserted an end 2E of the loop strip, said end being of reduced width to be engaged in said cut. It is this end 2E which bears the face 2A.
  • an apron 5 of insulating material is, by fixing means 6, held in contact on the actuating face of the spring in simple support, said apron being independent of the housing.
  • the apron 5 is a kind of plate that covers the maneuvering face. Its contact surface with the spring is extended. By apron, we understand a plate shaped according to the face of the spring it covers.
  • the apron is shaped to fit the maneuvering face.
  • the apron 5 is held on the spring by taking a back support in a housing of the housing and by the shape of the spring.
  • This housing has positioning means such as a fingerprint adapted to receive the apron and stall in translation said apron.
  • the apron spring assembly is mounted in the housing, the apron can slide on the spring by its shape and a clamp effect between the spring arm and the housing.
  • the apron covers a relatively large part to take into account the extent of the window and the orientations that the maneuvering tool could take. This solution uses the space available between the front face of the spring and the bottom of the impression as fastening means.
  • the apron 5 is in simple support.
  • the maintenance is also complemented by the changes of plans of the spring area which is covered by the apron.
  • the housing has a footprint defining with the spring space to position and maintain the spring in place without positive snap.
  • the apron is not hooked on the spring or in the footprint. It is placed on the spring and it is supported in the impression.
  • the operating tool is engaged between the apron 5 and the bottom of the cavity which moves the spring.
  • the 5M zone where the tool that acts as a wedge slides so that it is the face of the apron that pushes the spring and not the end of the apron.
  • This zone 5M is bordered by two ribs 5N which rest in the bottom of the footprint.
  • the material component of the passer is not elastic and this passer does not tighten the band, it simply slides eventually with a slight friction. This does not prohibit the use of an elastic material.
  • This loop is formed by a light 5A arranged in a folded part, substantially at right angles, of one end of the apron 5.
  • the free edge 5B of the folded end of the apron 5 constitutes a stop limiting the compression of the spring.
  • the spring has an elastic nature but if we apply a force too large, there is plastic deformation.
  • the apron is slid on the end of reduced width of the metal strip forming the spring. This end is, moreover, engaged in the 2D cutting of the spring in which one will engage the stripped conductor and when compressing the spring by pressing the operating face, the base of the passer comes into abutment on the edges of the cutout. which then limits the compression of the spring.
  • the shape of the spring shown is not limiting.
  • first portion 2C forming a base which has a 2D cut and this first part is extended by a second hairpin-shaped part, one of the branches of the hairpin extending the base and the other branch bearing the face of contact.
  • the advantage of the invention is that this apron is simple to produce. It can be put in place simply on the spring by setting it without risking to change the structure of the metal and it offers in addition, for some variants a limitation of the compression of the spring.
  • Another method of fixing without modification of the spring is to provide under the apron a tab remote from the underside of the apron of the thickness of the spring so as to slide laterally the apron on the spring, said tab forming with the apron clamp open laterally.
  • the distance between the tab and the underside of the apron will possibly be smaller than the thickness of the spring so as to avoid accidental sliding.
  • the apron may also be provided with lateral claws that hook onto the longitudinal edges of the shaped blade spring.
  • the deck being thin, to increase the electrical insulation, there is provided a longitudinal rib 50 and a transverse rib 51 to stabilize the support.
  • the rib T formed by 50 and 51 is on the face of the apron coming opposite the spring.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Description

L'invention se rapporte à une borne à serrage par ressort pour un appareil électrique.The invention relates to a spring-loaded terminal for an electrical appliance.

Notamment sur les armoires de distribution, on utilise des appareils électriques qui servent, par exemple à la protection de la distribution du courant électrique dans un local par exemple pour alimenter les prises de courant du local ou un appareil spécifique (lave linge ou four etc..).In particular on the distribution cabinets, electrical appliances are used which serve, for example to the protection of the distribution of electrical current in a room for example to supply the power outlets of the premises or a specific device (washing machine or oven etc.). .).

On connait par exemple le disjoncteur qui surveille l'ampérage consommée pour en cas de surcharge couper l'alimentation de la ligne électrique.We know for example the circuit breaker that monitors the amperage consumed for overload cut off power to the power line.

Ces appareils comportent des bornes d'entrée et des bornes de sortie.These devices have input terminals and output terminals.

Des conducteurs électriques sont reliés électriquement aux dites bornes.Electrical conductors are electrically connected to said terminals.

Pour ce faire la borne présente une partie femelle en matériau conducteur dans lequel on engage l'extrémité dénudée d'un conducteur et avec un moyen d'application, on met en contact cette extrémité dénudée avec la partie femelle pour établir le contact électrique. Le contact doit être suffisant sinon on constitue une résistance de contact qui peut provoquer une élévation de température du dispositif et un risqueTo do this the terminal has a female portion of conductive material in which the stripped end of a conductor is engaged and with an application means, this stripped end is brought into contact with the female part to establish the electrical contact. The contact must be sufficient otherwise a contact resistance is formed which can cause a rise in temperature of the device and a risk

Il est connu d'utiliser une vis de pression qui vient directement ou indirectement mettre en contact les deux éléments conducteurs.It is known to use a pressure screw which comes directly or indirectly to bring the two conductive elements into contact.

Dans un second mode de réalisation, au lieu d'une vis, on utilise un ressort.In a second embodiment, instead of a screw, a spring is used.

Le ressort exerce une force d'application constamment alors que les vis se desserrent et imposent une opération de resserrage périodiquement.The spring exerts a force of application constantly while the screws loosen and impose a tightening operation periodically.

Un autre avantage est que le vissage et dévissage de la vis prend du temps et la force d'application dépend de l'opérateur alors que le ressort est rapide et la force est induite par les seules caractéristiques du ressort.Another advantage is that the screwing and unscrewing of the screw takes time and the application force depends on the operator while the spring is fast and the force is induced by the only characteristics of the spring.

Pour le ressort, il suffit d'appuyer à un endroit dudit ressort pour le comprimer momentanément et permettre soit la mise en place du conducteur soit son retrait.For the spring, simply press a point of said spring to compress it momentarily and allow either the establishment of the driver or withdrawal.

Le ressort étant logé dans une enveloppe isolante, il est accessible par une fenêtre au travers de laquelle on introduit un outil pour pousser sur le ressort.The spring being housed in an insulating envelope, it is accessible through a window through which a tool is introduced to push on the spring.

Pour effectuer cette opération sur le ressort, il est recommandé de couper l'arrivée du courant et/ou d'utiliser un outil non conducteur.To perform this operation on the spring, it is recommended to shut off the power supply and / or use a non-conductive tool.

Malheureusement, il se produit des accidents car certains ne coupent pas l'alimentation électrique et utilisent des outils mal isolés.Unfortunately, accidents happen because some people do not cut power and use poorly insulated tools.

Il est connu d'intégrer des boutons poussoirs ou des leviers en matériau diélectrique pour actionner le ressort mais cela complique l'appareil et est encombrant. Par ailleurs, statistiquement le besoin d'actionner le ressort est rare et il semble préférable de trouver une solution simple et peu couteuse.It is known to integrate push buttons or levers of dielectric material to actuate the spring but it complicates the device and is bulky. Moreover, statistically the need to operate the spring is rare and it seems better to find a simple and inexpensive solution.

Il est connu de surmouler un matériau sur une pièce métallique mais cela peut entrainer des modifications sur les caractéristiques de la pièce en raison de l'élévation de température et des contraintes mécanique de cette gaine que l'on placerait autour du ressort. Cette technique n'est pas appropriée pour des lames ressorts du type pour borne électrique.It is known to overmold a material on a metal part but this may cause changes in the characteristics of the part due to the temperature rise and mechanical stress of the sheath that would be placed around the spring. This technique is not suitable for leaf springs of the type for electrical terminal.

Il a donc été imaginé de prévoir une pièce isolante montée sur le boitier qui est localisée devant le ressort.It has therefore been imagined to provide an insulating part mounted on the housing which is located in front of the spring.

Cette pièce est placée sur la trajectoire de l'outil de sorte que l'outil doit pousser d'abord la pièce qui venant au contact du ressort va déplacer le ressort et permettre la mise en place de l'extrémité dénudée du conducteur. Cette solution offre une bonne protectionThis piece is placed on the path of the tool so that the tool must first push the piece that comes into contact with the spring will move the spring and allow the insertion of the stripped end of the conductor. This solution offers good protection

La pièce doit être articulée sur le boitier par exemple par un film charnière.The piece must be hinged to the case for example by a hinge film.

Elle est fabriquée avec le boitier ce qui complique le moule.It is made with the case which complicates the mold.

Il est connu de EP 106768 une pièce de manoeuvre creusée pour recevoir la pointe d'un tournevis, la dite pièce présentant une poche pour coiffer l'extrémité d'un ressort et permettre la manoeuvre. Pour recevoir l'extrémité du tournevis, la pièce fait environ 1cm d'épaisseur et doit être rigide car elle fait pivoter le ressort en agissant sur l'extrémité dudit ressort. La poche est sollicitée à chaque manoeuvre et il y a donc un risque de déchirure de la poche.It is known to EP 106768 an operating part dug to receive the tip of a screwdriver, said piece having a pocket for styling the end of a spring and allow the maneuver. To receive the end of the screwdriver, the piece is about 1cm thick and must be rigid because it pivots the spring by acting on the end of said spring. The pocket is solicited at each maneuver and there is therefore a risk of tearing the pocket.

On connait également US2001/002349 ou US2003/194918 ou EP 2001086 qui utilise la pièce comme un doigt dont l'extrémité appui sur le ressort et l'autre extrémité sert d'appui à un tournevis.We also know US2001 / 002349 or US2003 / 194918 or EP 2001086 which uses the piece as a finger whose end bears on the spring and the other end serves as support for a screwdriver.

L'invention propose une solution qui notamment simplifie la fabrication.The invention proposes a solution which in particular simplifies the manufacture.

A cet effet, l'invention se rapporte à une borne électrique selon la revendication 1.For this purpose, the invention relates to an electrical terminal according to claim 1.

L'invention sera bien comprise à l'aide de la description ci après faite à titre d'exemple non limitatif en regard du dessin qui représente :

  • FIG 1 montage du tablier sur un ressort
  • FIG 2:montage du ressort dans un boitier
  • FIG 3:coupe d'une borne
  • FIG 4:un éclaté d'une borne à ressort
  • FIG 5: le tablier et le ressort de la figure 4 monté
The invention will be better understood from the following description given by way of non-limiting example with reference to the drawing which represents:
  • FIG 1 assembly of the apron on a spring
  • FIG 2 : mounting the spring in a box
  • FIG 3 : cut of a terminal
  • FIG 4 : a burst of a spring terminal
  • FIG 5 : the apron and spring of the figure 4 mounted

En se reportant au dessin on voit un appareil électrique destiné à distribuer du courant pourvu d'au moins une borne électrique servant de point de connexion à un conducteur électrique dont l'extrémité est dénudée.Referring to the drawing there is shown an electrical apparatus for distributing current provided with at least one electrical terminal serving as a connection point to an electrical conductor whose end is stripped.

La borne comprend un boitier 1 en matière isolante logeant un ressort 2 métallique plat conformé en boucle comportant une face 2A de contact destinée à s'appuyer sur l'extrémité 3 dénudée d'un conducteur électrique et une face 2B de manoeuvre accessible à un outil engagé au travers d'une fenêtre 4.The terminal comprises a housing 1 made of insulating material housing a flat metal spring 2 shaped in a loop having a contact surface 2A intended to bear on the bare end 3 of an electrical conductor and a working surface 2B accessible to a tool engaged through a window 4.

On introduit un outil par la fenêtre pour exercer une pression sur le ressort au niveau de la face 2B de manoeuvre pour déplacer la face de contact et glisser le conducteur dans la position appropriée ou le retirer.A tool is introduced through the window to exert pressure on the spring at the operating face 2B to move the contact face and slide the conductor to the appropriate position or remove it.

Le ressort 2 est une bande de métal plat ayant des caractéristiques élastiques et conformée selon le logement dans lequel la bande est placée et selon la manière de mettre en contact le conducteur électrique.The spring 2 is a flat metal strip having elastic characteristics and shaped according to the housing in which the strip is placed and in the manner of contacting the electrical conductor.

Ici, le ressort en place forme une boucle et comprend une base 2C sensiblement plane présentant une découpe 2D dans laquelle vient s'insérer une extrémité 2E de la bande formant boucle, ladite extrémité étant de largeur réduite pour être engagée dans la dite découpe. C'est cette extrémité 2E qui porte la face 2A.Here, the spring in place forms a loop and comprises a substantially planar base 2C having a 2D cut in which is inserted an end 2E of the loop strip, said end being of reduced width to be engaged in said cut. It is this end 2E which bears the face 2A.

Avantageusement, un tablier 5 en matériau isolant est, par des moyens 6 de fixation, maintenu en contact sur la face de manoeuvre du ressort en simple appui, le dit tablier étant indépendant du boitier.Advantageously, an apron 5 of insulating material is, by fixing means 6, held in contact on the actuating face of the spring in simple support, said apron being independent of the housing.

Le tablier 5 est une sorte de plaquette qui couvre la face de manoeuvre. Sa surface de contact avec le ressort est étendue. Par tablier, on comprendra une plaque conformée en fonction de la face du ressort qu'elle recouvre.The apron 5 is a kind of plate that covers the maneuvering face. Its contact surface with the spring is extended. By apron, we understand a plate shaped according to the face of the spring it covers.

Le tablier est conformé pour épouser la face de manoeuvre.The apron is shaped to fit the maneuvering face.

Selon un mode de réalisation (fig 4 et 5) le tablier 5 est maintenu sur le ressort en prenant un appui dorsal dans un logement du boitier et de par la forme du ressort. Ce logement présente des moyens de positionnement telle une empreinte apte à recevoir le tablier et à caler en translation ledit tablier. Lorsque l'ensemble ressort tablier est monté dans le boitier, le tablier ne peut glisser sur le ressort de par sa forme et un effet de pince entre la branche du ressort et le logement. Le tablier couvre une partie relativement étendue pour tenir compte de l'étendue de la fenêtre et des orientations que pourrait prendre l'outil de manoeuvre. Cette solution utilise l'espace disponible entre la face avant du ressort et le fond de l'empreinte comme moyen de fixation. Le tablier 5 est en simple appui.According to one embodiment ( fig 4 and 5 ) the apron 5 is held on the spring by taking a back support in a housing of the housing and by the shape of the spring. This housing has positioning means such as a fingerprint adapted to receive the apron and stall in translation said apron. When the apron spring assembly is mounted in the housing, the apron can slide on the spring by its shape and a clamp effect between the spring arm and the housing. The apron covers a relatively large part to take into account the extent of the window and the orientations that the maneuvering tool could take. This solution uses the space available between the front face of the spring and the bottom of the impression as fastening means. The apron 5 is in simple support.

Le maintien est également complété par les changements de plans de la zone du ressort qui est couverte par le tablier. Le boitier présente une empreinte définissant avec le ressort un espace pour positionner et maintenir le ressort en place sans accrochage positif. Le tablier n'est pas accroché sur le ressort ni dans l'empreinte. Il est posé sur le ressort et il prend appui dans l'empreinte.The maintenance is also complemented by the changes of plans of the spring area which is covered by the apron. The housing has a footprint defining with the spring space to position and maintain the spring in place without positive snap. The apron is not hooked on the spring or in the footprint. It is placed on the spring and it is supported in the impression.

L'outil de manoeuvre est engagé entre le tablier 5 et le fond de l'empreinte ce qui déplace le ressort. On voit figure 4 la zone 5M où glisse l'outil qui agit comme un coin de sorte que c'est la face du tablier qui pousse le ressort et non l'extrémité du tablier. Cette zone 5M est bordée par deux nervures 5N qui s'appuient dans le fond de l'empreinte.The operating tool is engaged between the apron 5 and the bottom of the cavity which moves the spring. We see figure 4 the 5M zone where the tool that acts as a wedge slides so that it is the face of the apron that pushes the spring and not the end of the apron. This zone 5M is bordered by two ribs 5N which rest in the bottom of the footprint.

Dans un exemple (fig 1 à 3), il présente un passant 6 dans lequel est glissée la lame du ressort. Ce passant se situe sous la face de la plaquette orientée vers la face de manoeuvre du ressort. Le passant ne travaille pas.In one example ( fig 1 to 3 ), it has a loop 6 in which is slid the leaf of the spring. This passer is located under the face of the wafer oriented towards the actuating face of the spring. The passer-by does not work.

La matière composant le passant n'est pas élastique et ce passant ne vient pas serrer la bande, il coulisse simplement éventuellement avec un léger frottement. Cela n'interdit pas d'utiliser un matériau élastique.The material component of the passer is not elastic and this passer does not tighten the band, it simply slides eventually with a slight friction. This does not prohibit the use of an elastic material.

Ce passant est formé par une lumière 5A aménagée dans une partie pliée, sensiblement à angle droit, d'une extrémité du tablier 5.This loop is formed by a light 5A arranged in a folded part, substantially at right angles, of one end of the apron 5.

Avantageusement, le bord libre 5B de l'extrémité pliée du tablier 5 constitue une butée limitant la compression du ressort. En effet le ressort présente un caractère élastique mais si on applique une force trop grande, il y a déformation plastique. Ici le tablier est glissé sur l'extrémité de largeur réduite de la bande métallique formant le ressort. Cette extrémité est, par ailleurs, engagée dans la découpe 2D du ressort dans laquelle on engagera le conducteur dénudé ainsi lorsqu'on comprime le ressort en appuyant sur la face de manoeuvre, la base du passant vient en butée sur les bords de la découpe ce qui limite alors la compression du ressort.Advantageously, the free edge 5B of the folded end of the apron 5 constitutes a stop limiting the compression of the spring. Indeed the spring has an elastic nature but if we apply a force too large, there is plastic deformation. Here the apron is slid on the end of reduced width of the metal strip forming the spring. This end is, moreover, engaged in the 2D cutting of the spring in which one will engage the stripped conductor and when compressing the spring by pressing the operating face, the base of the passer comes into abutment on the edges of the cutout. which then limits the compression of the spring.

La forme du ressort représenté n'est pas limitative.The shape of the spring shown is not limiting.

Il comprend une première partie 2C formant base qui présente une découpe 2D et cette première partie se prolonge par une seconde partie en forme d'épingle à cheveux, une des branches de l'épingle prolongeant la base et l'autre branche portant la face de contact.It comprises a first portion 2C forming a base which has a 2D cut and this first part is extended by a second hairpin-shaped part, one of the branches of the hairpin extending the base and the other branch bearing the face of contact.

L'avantage de l'invention est que ce tablier est simple à produire. Il peut être mis en place simplement sur le ressort en le posant sans risquer de modifier la structure du métal et il offre en plus, pour certaines variantes une limitation de la compression du ressort.The advantage of the invention is that this apron is simple to produce. It can be put in place simply on the spring by setting it without risking to change the structure of the metal and it offers in addition, for some variants a limitation of the compression of the spring.

Il est peu encombrant car il est mince et vient épouser la face du ressort et il recouvre une surface importante. Du fait qu'il est en contact avec le ressort, il est peu encombrant. C'est le changement d'orientation des plans de la lame ressort et l'espace adapté à la plaquette qui permet à celle-ci de rester en position sans accrochage positif.It is not bulky because it is thin and comes to marry the face of the spring and it covers a large area. Because it is in contact with the spring, it is not bulky. It is the change of orientation of the planes of the leaf spring and the space adapted to the wafer which allows it to remain in position without positive snap.

Un autre mode de fixation sans modification du ressort consiste à prévoir sous le tablier une patte distante de la face inférieure du tablier de l'épaisseur du ressort de sorte à glisser latéralement le tablier sur le ressort, la dite patte formant avec le tablier une pince ouverte latéralement. La distance entre la patte et la face inférieure du tablier sera éventuellement plus faible que l'épaisseur du ressort de sorte à éviter un glissement accidentel.Another method of fixing without modification of the spring is to provide under the apron a tab remote from the underside of the apron of the thickness of the spring so as to slide laterally the apron on the spring, said tab forming with the apron clamp open laterally. The distance between the tab and the underside of the apron will possibly be smaller than the thickness of the spring so as to avoid accidental sliding.

Le tablier peut également être pourvu de griffes latérales qui viennent s'accrocher sur les bords longitudinaux de la lame conformée en ressort.The apron may also be provided with lateral claws that hook onto the longitudinal edges of the shaped blade spring.

Il est possible de prévoir sur le tablier, sur sa face dorsale, un téton qui s'engage dans un trou du ressort mais il est important de tenir compte de ce trou dans la fabrication du ressort car il en modifie les caractéristiques d'élasticité. C'est donc une solution moins facile.It is possible to provide on the apron, on its dorsal face, a pin which engages in a hole of the spring but it is important to take account of this hole in the manufacture of the spring because it modifies the characteristics of elasticity. It is therefore a less easy solution.

Lors de la manoeuvre,que ce soit le passant ou les griffes ou le teton, ce n'est pas ces moyens qui travaillent. Ce sont des moyens de positionnement.During the maneuver, be it the passer-by or the claws or the teton, it is not these means that work. These are positioning means.

Le tablier étant mince, pour augmenter l'isolation électrique, on a prévu une nervure longitudinale 50 et une nervure transversale 51 pour stabiliser l'appui.The deck being thin, to increase the electrical insulation, there is provided a longitudinal rib 50 and a transverse rib 51 to stabilize the support.

On augmente ainsi le parcours diélectrique.This increases the dielectric path.

La nervure en T formée par 50 et 51 est sur la face du tablier venant en regard du ressort.The rib T formed by 50 and 51 is on the face of the apron coming opposite the spring.

Claims (6)

  1. Electrical terminal comprising a casing of insulating material housing a loop-shaped flat metal spring (2) having a contact face (2A) to be pressed onto the stripped end of an electrical conductor and an operating face (2B) in front of which is located an insulating part accessible to a tool inserted through an aperture (4) in the casing to deform the spring elastically in order to move the contact face (2A) and engage the electrical conductor, this electrical terminal being characterized in that the insulating part takes the form of a plate (5) mating with the operating face of said spring, which is kept in contact with the spring by a fastening means, on the one hand, by bearing dorsally in a housing of the casing and, on the other hand, by changes in the planes of said spring preventing the plate from sliding, said plate being independent of the casing and simply bearing on the spring.
  2. Electrical terminal according to Claim 1, characterized in that the casing has a cavity in which the plate bears.
  3. Electrical terminal according to Claim 1 or 2, characterized in that the plate has a rib (50, 51) on one face to increase the dielectric path.
  4. Electrical terminal according to Claim 3, characterized in that the rib forms a T.
  5. Electrical terminal according to any of the preceding claims, characterized in that the face of the plate situated opposite the face in contact with the spring has two ribs (5N) delimiting an area (5M) in which the operating tool slides.
  6. Electrical apparatus comprising at least one connecting terminal with resilient clamping, characterized in that it comprises a terminal according to any one of the preceding claims.
EP12350001.9A 2011-04-29 2012-04-17 Spring-mounted connection terminal Active EP2518833B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1101325A FR2974678B1 (en) 2011-04-29 2011-04-29 SPRING CONNECTION TERMINAL

Publications (2)

Publication Number Publication Date
EP2518833A1 EP2518833A1 (en) 2012-10-31
EP2518833B1 true EP2518833B1 (en) 2016-08-31

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ID=46027880

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Application Number Title Priority Date Filing Date
EP12350001.9A Active EP2518833B1 (en) 2011-04-29 2012-04-17 Spring-mounted connection terminal

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EP (1) EP2518833B1 (en)
FR (1) FR2974678B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534744A1 (en) * 1982-10-15 1984-04-20 Telemecanique Electrique CONNECTING DEVICE FOR ELECTRICAL CONDUCTOR
DE19823648C1 (en) * 1998-05-27 1999-11-04 Metz Albert Ria Electronic Connector, esp. for circuit boards, developed to be simple to operate, to be of simple construction and to be held stable in the open position
EP1353407B1 (en) * 2002-04-12 2011-01-19 Weidmüller Interface GmbH & Co. KG Wire connecting device
DE502007003404D1 (en) * 2007-06-08 2010-05-20 Landis & Gyr Ag Screwless connection terminal

Also Published As

Publication number Publication date
FR2974678B1 (en) 2013-10-11
FR2974678A1 (en) 2012-11-02
EP2518833A1 (en) 2012-10-31

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