EP0034081A1 - Connexion strip for a pluggable card and connector provided with such a strip - Google Patents

Connexion strip for a pluggable card and connector provided with such a strip Download PDF

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Publication number
EP0034081A1
EP0034081A1 EP81400108A EP81400108A EP0034081A1 EP 0034081 A1 EP0034081 A1 EP 0034081A1 EP 81400108 A EP81400108 A EP 81400108A EP 81400108 A EP81400108 A EP 81400108A EP 0034081 A1 EP0034081 A1 EP 0034081A1
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EP
European Patent Office
Prior art keywords
base
cover
clamp
connection strip
bar
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.)
Granted
Application number
EP81400108A
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German (de)
French (fr)
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EP0034081B1 (en
Inventor
Hervé Bricaud
Bruno Seytre
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Socapex SA
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Socapex SA
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Filing date
Publication date
Application filed by Socapex SA filed Critical Socapex SA
Publication of EP0034081A1 publication Critical patent/EP0034081A1/en
Application granted granted Critical
Publication of EP0034081B1 publication Critical patent/EP0034081B1/en
Expired legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
    • H01R12/714—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit with contacts abutting directly the printed circuit; Button contacts therefore provided on the printed circuit

Definitions

  • the present invention relates to the field of connectors for circuits on plug-in cards.
  • Such cards are presented in the form of a quadrilateral plate, made of an electrically insulating material, supporting a plurality of electronic components and the connections which connect them, these being most often produced by depositing on the plate of an electrically conductive metal.
  • connection with the external use circuits is ensured by a plurality of contacts arranged on one or more sides of the wafer, cooperating with contacts of complementary shape forming part of a fixed connector connected to the use circuits; this connector generally provides a second function, that of mechanical support of the card in the equipment where it is implemented.
  • the connectors Due to the quadrilateral shape of the plate, the connectors thus take the general structure of elongated blocks in the form of bars, sometimes arranged at right angles on a common flat base.
  • connection bars in two parts, capable of '' a relative movement relative to each other, leading to an implementation in two phases: 6 card insertion phase, corresponding to an open position of the mobile part, connection phase and fixing of the card, corresponding to the closed position of this part.
  • a terminal strip forming part of such connectors is thus most often in two main parts, made of insulating material, namely a fixed base and a cover provided with rows of conductive contact elements, and joined by an axis of rotation. longitudinal allowing to realize the two open and closed positions indicated above.
  • the closed position applies the contacts of the connector against the plates with a force obtained by choosing an elastic material for constituting them, and essential for ensuring contacts with low electrical resistance.
  • a tightening by screw is generally used between the base and the cover, placed either at the ends of the latter if the bar is short, or at locations distributed along of the bar if it is long.
  • the connector which is the subject of the present invention does not have any of these drawbacks.
  • connection - disconnection operations corresponding to the closing and opening stages, are practically instantaneous.
  • the invention separates, for the base and the cover, the respective functions of supporting contact elements, and of applying support pressures, which they assume in the connectors of the known art. . It retains only the first for them, and entrusts the second to a different means, creating by elasticity the pressing pressures whose cover ensures only transmission, and endowed with great longitudinal rigidity.
  • This means has the general shape of an angle or profiled U-shaped section, "horseshoe”, which we know the great longitudinal rigidity, and the part which is endowed with elasticity is the base of the profile connecting, in a sectional view, the two branches of the horseshoe.
  • the invention consists of a connection strip for a plug-in card, consisting of a base and a rectangular cover, supporting a plurality of electrical contact elements provided with elasticity, the cover being able to pivot about an axis. longitudinal parallel to the base, taking two positions, respectively opening for placing the edge of a card, and closing for bringing the respective conductive elements of the strip and the card into contact, strip characterized in that said closure is ensured by a clamp in the form of a profiled beam with U-section, arranged parallel to the longitudinal axis of the bar, and the two branches of which bear respectively on two zones of the base and of the cover , ensuring the closure by application of a force obtained by elastic deformation of the connecting base of the two branches.
  • Figure 1 shows, in a partial perspective sectional view, a connector for plug-in card according to the prior art.
  • This connector consists of a base 1, a cover 2, which can pivot relative to each other around the axis 3, and a plurality of contact elements such as 4.
  • the card 5 being placed in the open position of the connector around the axis 3, the closed position compresses the elastic parts 6 and 7 of the contacts, the reaction of which exerts a tensing force F move aside the base cover.
  • a plurality of screws such as 8 and 9 are used.
  • FIG. 2 shows, in a sectional view, a connection strip for a plug-in card according to the invention.
  • It comprises a base 11, a cover 12 pivoting about the axis 13, and a plurality of contacts such as 14.
  • a separate means constituted by a profile 15 in the form of a beam with U-shaped section or "horseshoe”, section comprising two unequal branches 16 and 17, and a connecting base of the branches 18.
  • This profile which in the following, will be designated, by way of simplification, by the name of clamp, is made of an elastic material such as stainless steel. It performs two functions, namely on the one hand the application of a closing force of the bar opposing the elastic forces tending to open it, developed by the contacts, and on the other hand, as a result of the longitudinal stiffness characteristic of beams with a U-section, the function of maintaining the linear shape longitu dinale of the hood, which it replaces in this aspect of non-deformability.
  • the clamp is fixed by projecting parts 19 and 20 carried by the bar, cooperating with regions of complementary shape carried by the clamp.
  • Figure 3 shows, in a perspective view, a closure clip according to the invention. It is presented, in section, along a U-shaped beam with unequal branches 16 and 17; the short branch 17 is provided with a bead 30 for fixing in a housing carried by the base of the bar, and the long branch 16 carries openings such as 31 intended to cooperate with tenons 19 carried on the cover, and visible in Figure 2.
  • Openings 32 are arranged in the connecting base 18 of the branches, the role of which is to allow, by choice of their dimensions, the precise adjustment of the elasticity of the clamp. They can have another role, which will be explained later, when the bar is opened.
  • the clamp carries, at the ends of the long branch 31, two longitudinal studs 33 and 34, which can penetrate into open housings formed on the upper part of the cover, by constituting pivot pins securing the clamp and the cover, in position opening hours.
  • Figure 4 gives, in a schematic section, an explanatory diagram of the operation of the connection strip.
  • the clamp 15 mounted on the bar exerts on its two parts two equal and opposite forces FI and F2.
  • the force F exerted by the contacts on the two parts tends to open the bar.
  • the advantageous result of the invention is to obtain that Fil is greater than F, uniformly over the entire length of the strip, without necessity, as explained above in detail, of a perfect rigidity of the cover, which can thus be made of a deformable plastic material of small thickness with respect to the length.
  • Figures 5 and 6 show a clamp opening device forming part of the present invention.
  • the opening can be obtained by extracting the short branch from its housing using any tool inserted between the connecting base 18 and the base of the bar 11.
  • a particularly advantageous means is constituted by a bent lever 50, the bent part 51 of which can be inserted into one of the openings 32 of the connecting base, in position (a) in FIG. 6.
  • the bent part 51 is supported simultaneously on the base and the connection base, causing the extraction of the clamp, and its rotation around the pins 34, pivoting in the open housings 35 carried by the upper face of the cover 12.
  • the invention thus provides the possibility of producing overlapping plug-in cards with very small spaces, the closing clip, being part of the connection strip of the invention being very thin, and requiring no additional spacing for its placement and removal, which otherwise is virtually instantaneous.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

L'invention se rapporte au domaine des connecteurs pour circuits sur carte. Ces connecteurs comportent au moins une barrette ouvrante, constituée d'une embase 11, d'un capot 12 pivotant autour d'un axe 13 et d'une pluralité de contacts élastiques 14, sous l'influence desquels la barrette fermée à tendance à se déformer longitudinalement. L'invention prévoit de la rendre indéformable par mise en place d'un profilé 15, à section en U, maintenu par des tenons 19 et 20, et dont la partie médiane 18 est dotée d'élasticité pour exercer la force de fermeture. Les applications sont notamment les équipements à grande densité de circuits sur carte superposés.The invention relates to the field of connectors for circuits on a board. These connectors comprise at least one opening bar, consisting of a base 11, a cover 12 pivoting about an axis 13 and a plurality of elastic contacts 14, under the influence of which the closed bar tends to deform longitudinally. The invention provides for making it non-deformable by fitting a profile 15, with a U-shaped section, held by tenons 19 and 20, and the middle part 18 of which is provided with elasticity to exert the closing force. Applications include equipment with high density of superimposed circuit boards.

Description

La présente invention se rapporte au domaine des connecteurs pour circuits sur cartes enfichables.The present invention relates to the field of connectors for circuits on plug-in cards.

De telles cartes se présentent sous l'aspect d'une plaquette en forme de quadrilatère, faite d'un matériau électriquement isolant, supportant une pluralité de composants électroniques et les connexions qui les relient, celles-ci étant le plus souvent réalisées par dépôt sur la plaquette d'un métal électriquement bon conducteur.Such cards are presented in the form of a quadrilateral plate, made of an electrically insulating material, supporting a plurality of electronic components and the connections which connect them, these being most often produced by depositing on the plate of an electrically conductive metal.

Le raccordement avec les circuits d'utilisation extérieurs est assuré par une pluralité de contacts disposés sur un ou plusieurs côtés de la plaquette, coopérant avec des contacts de forme complé mentaire faisant partie d'un connecteur fixe relié aux circuits d'utilisation ; ce connecteur assure en général une deuxième fonction, celle de support mécanique de la carte dans l'équipement où elle est mise en oeuvre.The connection with the external use circuits is ensured by a plurality of contacts arranged on one or more sides of the wafer, cooperating with contacts of complementary shape forming part of a fixed connector connected to the use circuits; this connector generally provides a second function, that of mechanical support of the card in the equipment where it is implemented.

Par suite de la forme en quadrilatère de la plaquette, les connecteurs prennent ainsi la structure générale de blocs allongés en forme de barrettes, parfois disposés à angle droit sur un socle plan commun.Due to the quadrilateral shape of the plate, the connectors thus take the general structure of elongated blocks in the form of bars, sometimes arranged at right angles on a common flat base.

Suivant un mode de réalisation souvent rencontré, en particulier quand les barrettes sont au nombre de quatre, définissant un quadrilatère fermé, la mise en place pour raccordement et fixation d'une carte enfichable nécessite la réalisation des barrettes de connexion en deux parties, capables d'un mouvement relatif l'une par rapport à l'autre, conduisant à une mise en oeuvre en deux phases : 6 phase d'introduction de la carte, correspondant à une position ouverte de la partie mobile, phase de raccordement et fixation de la carte, correspondant à la position fermée de cette partie.According to an embodiment often encountered, in particular when the bars are four in number, defining a closed quadrilateral, the installation for connection and fixing of a plug-in card requires the realization of the connection bars in two parts, capable of '' a relative movement relative to each other, leading to an implementation in two phases: 6 card insertion phase, corresponding to an open position of the mobile part, connection phase and fixing of the card, corresponding to the closed position of this part.

Ces dispositions apportent de plus, dans certains cas, la possibilité de mettre en place une carte par simple translation parallèlement à une barrette de connexion, la position ouverte mettant en retrait les contacts électriques, et assurant une insertion de la carte à frottement nul.These provisions also bring, in certain cases, the possibility of installing a card by simple translation parallel to a connection strip, the open position inducing the electrical contacts, and ensuring insertion of the card with zero friction.

Une barrette de raccordement faisant partie de tels connecteurs se présente ainsi le plus souvent en deux parties principales, réalisées en matériau isolant, à savoir une embase fixe et un capot munis de rangées d'éléments de contact conducteurs, et réunis par un axe de rotation longitudinal permettant de réaliser les deux positions ouverte et fermée indiquées plus haut.A terminal strip forming part of such connectors is thus most often in two main parts, made of insulating material, namely a fixed base and a cover provided with rows of conductive contact elements, and joined by an axis of rotation. longitudinal allowing to realize the two open and closed positions indicated above.

Cependant, la position fermée applique les contacts du connecteur contre les plaquettes avec une force obtenue par choix d'un matériau élastique pour la constitution de ceux-ci, et indispensable pour assurer des contacts à faible résistance électrique.However, the closed position applies the contacts of the connector against the plates with a force obtained by choosing an elastic material for constituting them, and essential for ensuring contacts with low electrical resistance.

Pour compenser la force élastique antagoniste qui en résulte, on fait en général appel à un serrage par vis, entre l'embase et le capot, placées soit aux extrémités de ceux-ci si la barrette est courte, soit à des emplacements répartis le long de la barrette si elle est longue. En donnant, de plus, une épaisseur notable à l'embase et au capot, leur conférant une grande rigidité longitudinale, la déformation entre deux vis successives reste tolérable et ne modifie pas sensiblement la valeur de la résistance électrique de contact.To compensate for the antagonistic elastic force which results therefrom, a tightening by screw is generally used between the base and the cover, placed either at the ends of the latter if the bar is short, or at locations distributed along of the bar if it is long. By giving, in addition, a significant thickness to the base and to the cover, giving them great longitudinal rigidity, the deformation between two successive screws remains tolerable and does not substantially modify the value of the electrical contact resistance.

Il en va tout autrement lorsque les dimensions des connecteurs diminuent, par suite de la tendance à une miniaturisation croissante.It is quite different when the dimensions of the connectors decrease, as a result of the trend towards increasing miniaturization.

D'abord, il est de plus en plus fréquent de superposer plusieurs étages de circuits sur carte, et la diminution des encombrements conduit à ne ménager verticalement entre deux barrettes, qu'un espace réduit ne permettant que difficilement l'introduction d'un tournevis.First, it is more and more frequent to superimpose several stages of circuits on a card, and the reduction in overall dimensions means that there is only vertical space between two strips, that a reduced space only makes it difficult to insert a screwdriver. .

Ensuite les épaisseurs des barrettes diminuent et, comme les pressions d'appui imposées par la nécessité des bons contacts électriques restent les mêmes, il est nécessaire de multiplier, en les rapprochant, les vis de serrage entre embase et capot. Il n'est cependant pas possible d'aller très loin dans cette direction, chaque vis prenant la place de plusieurs éléments de contact utiles, et en pratique, les capots s'écartent des embases entre deux vis successives, en prenant la forme d'arcs pour lesquels les contacts présentent de grandes variations de résistance en fonction de leur emplacement sur ceux-ci.Then the thicknesses of the bars decrease and, as the contact pressures imposed by the need for good electrical contacts remain the same, it is necessary to multiply, by bringing them closer, the clamping screws between base and cover. It is not however, it is not possible to go very far in this direction, each screw taking the place of several useful contact elements, and in practice, the covers deviate from the bases between two successive screws, taking the form of arcs for which the contacts have large variations in resistance depending on their location on them.

Par ailleurs, l'assemblage par vis présente alors l'inconvénient d'un temps croissant pour les opérations de serrage et desserrage de celles-ci.Furthermore, the assembly by screws then has the disadvantage of an increasing time for the tightening and loosening operations thereof.

Il est enfin à observer que, pour assurer une résistance aussi faible que possible au milieu de chaque arc, on est conduit à y exercer une pression suffisante, qui devient excessive au voisinage de chaque vis, pouvant entraîner des risques de dégradation de contacts ou de rupture de cartes dans le cas de circuits fragiles, comme ceux qui sont réalisés sur plaquettes de céramique par exemple.Finally, it should be observed that, to ensure as low a resistance as possible in the middle of each arc, one is led to exert a sufficient pressure therein, which becomes excessive in the vicinity of each screw, which can lead to risks of degradation of contacts or of breaking of cards in the case of fragile circuits, such as those made on ceramic plates for example.

Le connecteur faisant l'objet de la présente invention ne comporte aucun de ces inconvénients.The connector which is the subject of the present invention does not have any of these drawbacks.

Il assure des contacts électriques de résistance faible et sensiblement constante, entre connecteur et circuit sur carte ; il permet l'utilisation de barrettes de grande longueur, tout en n'exigeant aucune vis de serrage ; enfin, il se prête à une mise en oeuvre dans des équipements miniaturisés, le moyen de serrage des capots sur les embases ayant une épaisseur négligeable. Enfin, les opérations de connexion - déconnexion, correspondant aux étapes de fer meture et d'ouverture, sont pratiquement instantanées.It provides electrical contacts of low and substantially constant resistance, between connector and circuit on board; it allows the use of long bars, while requiring no clamping screw; finally, it lends itself to being used in miniaturized equipment, the means for tightening the covers on the bases having a negligible thickness. Finally, the connection - disconnection operations, corresponding to the closing and opening stages, are practically instantaneous.

Dans son fondement, l'invention sépare, pour l'embase et le capot, les fonctions respectives de support d'éléments de contact, et d'application de pressions d'appui, qu'ils assument dans les connecteurs de l'art connu. Elle n'en conserve pour eux que la première, et confie la seconde à un moyen différent, créant par élasticité les pressions d'appui dont le capot assure seulement la transmission, et doté d'une grande rigidité longitudinale.In its foundation, the invention separates, for the base and the cover, the respective functions of supporting contact elements, and of applying support pressures, which they assume in the connectors of the known art. . It retains only the first for them, and entrusts the second to a different means, creating by elasticity the pressing pressures whose cover ensures only transmission, and endowed with great longitudinal rigidity.

Ce moyen a la forme générale d'une cornière ou profilé à section en U, "en fer à cheval", dont on connaît la grande rigidité longitudinale, et la partie qui en est dotée d'élasticité est la base du profilé reliant, sur une vue en section, les deux branches du fer à cheval.This means has the general shape of an angle or profiled U-shaped section, "horseshoe", which we know the great longitudinal rigidity, and the part which is endowed with elasticity is the base of the profile connecting, in a sectional view, the two branches of the horseshoe.

Plus précisément l'invention consiste en une barrette de connexion pour carte enfichable, constituée d'une embase et d'un capot parallélépipédiques, supportant une pluralité d'éléments de contact électrique dotés d'élasticité, le capot pouvant pivoter autour d'un axe longitudinal parallèle à l'embase, en prenant deux positions, respectivement d'ouverture pour la mise en place du bord d'une carte, et de fermeture pour la mise en contact des éléments conducteurs respectifs de la barrette et de la carte, barrette caractérisée en ce que ladite fermeture est assurée par une pince en forme de poutre profilée à section en U, disposée parallèlement à l'axe longitudinal de la barrette, et dont les deux branches s'appuient respectivement sur deux zones de l'embase et du capot, assurant la fermeture par application d'une force procurée par déformation élastique de la base de liaison des deux branches.More precisely, the invention consists of a connection strip for a plug-in card, consisting of a base and a rectangular cover, supporting a plurality of electrical contact elements provided with elasticity, the cover being able to pivot about an axis. longitudinal parallel to the base, taking two positions, respectively opening for placing the edge of a card, and closing for bringing the respective conductive elements of the strip and the card into contact, strip characterized in that said closure is ensured by a clamp in the form of a profiled beam with U-section, arranged parallel to the longitudinal axis of the bar, and the two branches of which bear respectively on two zones of the base and of the cover , ensuring the closure by application of a force obtained by elastic deformation of the connecting base of the two branches.

L'invention sera mieux comprise à l'aide de la description ci-après, en s'appuyant sur les figures annexées, où :

  • - la figure 1 représente, suivant une vue en coupe perspective partielle, une barrette de connexion selon l'art connu ;
  • - la figure 2 représente, suivant une vue en coupe, une barrette de connexion selon l'invention ;
  • - la figure 3 représente, suivant une vue en perspective, une pince de fermeture pour barrette selon l'invention ;
  • - la figure 4 représente, un diagramme explicatif du fonctionnement de l'invention ;
  • - les figures 5 et 6 représentent un dispositif d'ouverture de la pince faisant partie de l'invention.
The invention will be better understood with the aid of the description below, based on the appended figures, where:
  • - Figure 1 shows, in a partial perspective sectional view, a connection strip according to the known art;
  • - Figure 2 shows, in a sectional view, a connection strip according to the invention;
  • - Figure 3 shows, in a perspective view, a locking clip for bar according to the invention;
  • - Figure 4 shows an explanatory diagram of the operation of the invention;
  • - Figures 5 and 6 show a device for opening the clamp forming part of the invention.

La figure 1 représente, suivant une vue en coupe perspective partielle, un connecteur pour carte enfichable suivant l'art connu.Figure 1 shows, in a partial perspective sectional view, a connector for plug-in card according to the prior art.

Ce connecteur se compose d'une embase 1, d'un capot 2, pouvant pivoter l'un par rapport à l'autre autour de l'axe 3, et d'une pluralité d'éléments de contacts tels que 4. La carte 5 étant mise en place en position ouverte du connecteur autour de l'axe 3, la position fermée comprime les parties élastiques 6 et 7 des contacts, dont la réaction exerce une force F tendant à écarter le capot de l'embase. Pour s'y opposer, on met en oeuvre une pluralité de vis telles que 8 et 9.This connector consists of a base 1, a cover 2, which can pivot relative to each other around the axis 3, and a plurality of contact elements such as 4. The card 5 being placed in the open position of the connector around the axis 3, the closed position compresses the elastic parts 6 and 7 of the contacts, the reaction of which exerts a tensing force F move aside the base cover. To oppose it, a plurality of screws such as 8 and 9 are used.

Cependant, ainsi qu'on l'a expliqué plus haut, la région du capot située entre deux vis successives n'est pas appliquée sur l'embase de façon positive, et la droite de contour apparent D fait place, par suite de la déformabilité du matériau isolant, à un contour courbe R, avec tous les inconvénients exposés plus haut qui s'y attachent, concernant la résistance de contact élevée et irrégulière qui en découle, et de plus, la perte de place disponible pour les contacts en face de chaque région de serrage par vis.However, as explained above, the region of the cover situated between two successive screws is not applied to the base in a positive manner, and the line of apparent contour D gives way, due to the deformability of the insulating material, with a curved contour R, with all the disadvantages exposed above attached to it, concerning the high and irregular contact resistance which results therefrom, and moreover, the loss of space available for the contacts opposite each tightening region with screws.

Par ailleurs, dans le cas des équipements à cartes étagées, il est nécessaire, pour permettre l'ouverture, de laisser libre, sur une hauteur au moins égale à la longueur d'une vis, la distance entre deux barrettes superposées, contrainte qui s'oppose aux exigences croissantes de miniaturisation des équipements.Furthermore, in the case of stepped card equipment, to allow opening, it is necessary to leave free, over a height at least equal to the length of a screw, the distance between two superimposed bars, a constraint which s opposes the increasing requirements for miniaturization of equipment.

La figure 2 représente, suivant une vue en coupe, une barrette de connexion pour carte enfichable selon l'invention.2 shows, in a sectional view, a connection strip for a plug-in card according to the invention.

Elle comporte une embase 11, un capot 12 pivotant autour de l'axe 13, et une pluralité de contacts tels que 14.It comprises a base 11, a cover 12 pivoting about the axis 13, and a plurality of contacts such as 14.

La position fermée est assurée par un moyen séparé, constitué par un profilé 15 en forme de poutre à section en U ou en "fer à cheval", section comportant deux branches inégales 16 et 17, et une base de liaison des branches 18. Ce profilé, qui dans toute la suite, sera désigné, par voie de simplification, par le nom de pince, est réalisé en un matériau élastique tel qu'un acier inoxydable. Il assume deux fonctions, à savoir d'une part l'application d'une force de fermeture de la barrette s'opposant aux forces élastiques tendant à l'ouverture de celle-ci, développées par les contacts, et d'autre part, par suite de la caractéristique de rigidité longitudinale des poutres à section en U, la fonction de maintien de la forme linéaire longitudinale du capot, auquel il se substitue sous cet aspect d'indéformabilité.The closed position is ensured by a separate means, constituted by a profile 15 in the form of a beam with U-shaped section or "horseshoe", section comprising two unequal branches 16 and 17, and a connecting base of the branches 18. This profile, which in the following, will be designated, by way of simplification, by the name of clamp, is made of an elastic material such as stainless steel. It performs two functions, namely on the one hand the application of a closing force of the bar opposing the elastic forces tending to open it, developed by the contacts, and on the other hand, as a result of the longitudinal stiffness characteristic of beams with a U-section, the function of maintaining the linear shape longitu dinale of the hood, which it replaces in this aspect of non-deformability.

La fixation de la pince est assurée par des parties en saillie 19 et 20 portées par la barrette, coopérant avec des régions de forme complémentaire portées par la pince.The clamp is fixed by projecting parts 19 and 20 carried by the bar, cooperating with regions of complementary shape carried by the clamp.

La figure 3 représente, suivant une vue en perspective, une pince de fermeture suivant l'invention. Elle se présente, en section, suivant une poutre en U à branches inégales 16 et 17 ; la branche courte 17 est munie d'un bourrelet 30 pour la fixation dans un logement porté par l'embase de la barrette, et la branche longue 16 porte des ouvertures telles que 31 destinées à coopérer avec des tenons 19 portés sur le capot, et visibles sur la figure 2.Figure 3 shows, in a perspective view, a closure clip according to the invention. It is presented, in section, along a U-shaped beam with unequal branches 16 and 17; the short branch 17 is provided with a bead 30 for fixing in a housing carried by the base of the bar, and the long branch 16 carries openings such as 31 intended to cooperate with tenons 19 carried on the cover, and visible in Figure 2.

Des ouvertures 32 sont aménagées dans la base de liaison 18 des branches, dont le rôle est de permettre, par choix de leurs dimensions, le réglage précis de l'élasticité de la pince. Elles peuvent avoir un autre rôle, qui sera expliqué plus loin, lors de l'ouverture de la barrette.Openings 32 are arranged in the connecting base 18 of the branches, the role of which is to allow, by choice of their dimensions, the precise adjustment of the elasticity of the clamp. They can have another role, which will be explained later, when the bar is opened.

Enfin, la pince porte, aux extrémités de la branche longue 31, deux tenons longitudinaux 33 et 34, pouvant pénétrer dans des logements ouverts ménagés sur la partie supérieure du capot, en constituant des tourillons de pivotement solidarisant la pince et le capot, en position d'ouverture.Finally, the clamp carries, at the ends of the long branch 31, two longitudinal studs 33 and 34, which can penetrate into open housings formed on the upper part of the cover, by constituting pivot pins securing the clamp and the cover, in position opening hours.

La figure 4 donne, suivant une coupe schématique, un diagramme explicatif du fonctionnement de la barrette de connexion.Figure 4 gives, in a schematic section, an explanatory diagram of the operation of the connection strip.

La pince 15 montée sur la barrette exerce sur ses deux parties deux forces égales et opposées FI et F2. La force F exercée par les contacts sur les deux parties tend à ouvrir la barrette.The clamp 15 mounted on the bar exerts on its two parts two equal and opposite forces FI and F2. The force F exerted by the contacts on the two parts tends to open the bar.

En décomposant les forces appliquées suivant deux directions perpendiculaires, dont l'une est parallèle à F, on obtient des composantes horizontales F12 et F21 équilibrées grâce à l'axe de pivotement 3, et une composante Fil qui est de même direction que F, et de sens opposé.By breaking down the applied forces in two perpendicular directions, one of which is parallel to F, we obtain horizontal components F12 and F21 balanced by the pivot axis 3, and a Wire component which is in the same direction as F, and opposite direction.

Le résultat avantageux de l'invention est d'obtenir que Fil est supérieur à F, de façon uniforme sur toute la longueur de la barrette, sans nécessité, comme on l'a expliqué plus haut en détail, d'une rigidité parfaite du capot, qui peut ainsi être réalise en une matière plastique déformable d'épaisseur faible vis-à-vis de la longueur.The advantageous result of the invention is to obtain that Fil is greater than F, uniformly over the entire length of the strip, without necessity, as explained above in detail, of a perfect rigidity of the cover, which can thus be made of a deformable plastic material of small thickness with respect to the length.

Les figures 5 et 6 représentent un dispositif d'ouverture de la pince faisant partie de la présente invention. L'ouverture peut être obtenue par extraction de la branche courte de son logement à l'aide d'un outil quelconque introduit entre la base de liaison 18 et l'embase de la barrette 11. Cependant, un moyen particulierement avantageux est constitué par un levier coudé 50, dont la partie coudée 51 peut être introduite dans une des ouvertures 32 de la base de liaison, suivant la position (a) de la figure 6. Par rotation du levier 50 dans le sens de la flèche 52, la partie coudée 51 s'appuie simultanément sur l'embase et la base de liaison, provoquant l'extraction de la pince, et sa rotation autour des tourillons 34, pivotant dans les logements ouverts 35 portés par la face supérieure du capot 12.Figures 5 and 6 show a clamp opening device forming part of the present invention. The opening can be obtained by extracting the short branch from its housing using any tool inserted between the connecting base 18 and the base of the bar 11. However, a particularly advantageous means is constituted by a bent lever 50, the bent part 51 of which can be inserted into one of the openings 32 of the connecting base, in position (a) in FIG. 6. By rotation of the lever 50 in the direction of arrow 52, the bent part 51 is supported simultaneously on the base and the connection base, causing the extraction of the clamp, and its rotation around the pins 34, pivoting in the open housings 35 carried by the upper face of the cover 12.

L'invention apporte ainsi la possibilité de réaliser des superpositions de cartes enfichables étagées avec de très faibles espace ments, la pince de fermeture, faisant partie de la barrette de connexion de l'invention étant très mince, et ne nécessitant aucun espacement supplémentaire pour sa mise en place et son retrait, qui par ailleurs sont pratiquement instantanés.The invention thus provides the possibility of producing overlapping plug-in cards with very small spaces, the closing clip, being part of the connection strip of the invention being very thin, and requiring no additional spacing for its placement and removal, which otherwise is virtually instantaneous.

Les résultats obtenus dans le domaine des résistances électriques de contact, tant en valeur absolue qu'en régularité, sont, d'autre part, très avantageux par rapport à ceux qui sont obtenus dans le cas de barrettes de connexion de l'art connu, comme le montrent clairement les tableaux comparatifs ci-après, où le tableau A correspond aux résultats de l'art connu, et le tableau B aux résultats améliorés obtenus avec la barrette de connexion de l'inven tion.

Figure imgb0001
Figure imgb0002
 The results obtained in the field of electrical contact resistances, both in absolute value and in regularity, are, on the other hand, very advantageous compared to those obtained in the case of connection bars of the known art, as clearly shown in the comparative tables below, where table A corresponds to the results of the known art, and table B to the improved results obtained with the connection strip of the invention.
Figure imgb0001
Figure imgb0002

Claims (9)

1. Barrette de connexion pour carte enfichable, constituée d'une embase (11) et d'un capot (12) parallélépipédiques, supportant une pluralité d'éléments de contact électrique dotés d'élasticité, le capot pouvant pivoter autour d'un axe longitudinal (13) parallèle à l'embase, en prenant deux positions, respectivement d'ouverture pour la mise en place du bord d'une carte, et de fermeture pour la mise en contact des éléments conducteurs respectifs de la barrette et de la carte, barrette caractérisée en ce que ladite fermeture est assurée par une pince (15), en forme de poutre profilée à section en U, disposée parallèlement à l'axe longitudinal (13) de la barrette et à proximité de celui-ci, et dont les deux branches (16, 17) s'appuient respectivement sur deux zones de l'embase et du capot, assurant la fermeture par application d'une force procurée par déformation élastique de la base de liaison (18) des deux branches.1. Connection strip for plug-in card, consisting of a base (11) and a cover (12) parallelepipedic, supporting a plurality of electrical contact elements provided with elasticity, the cover being able to pivot about an axis longitudinal (13) parallel to the base, taking two positions, respectively opening for the positioning of the edge of a card, and closing for bringing the respective conductive elements of the strip and the card into contact , bar characterized in that said closure is ensured by a clamp (15), in the form of a profiled beam with a U-section, disposed parallel to and close to the longitudinal axis (13) of the bar, and of which the two branches (16, 17) are supported respectively on two areas of the base and the cover, ensuring the closure by application of a force provided by elastic deformation of the connecting base (18) of the two branches. 2. Barrette de connexion selon la revendication 1, caractérisée en ce que les deux branches (16, 17) de la pince (15) sont d'inégale longueur.2. Connection strip according to claim 1, characterized in that the two branches (16, 17) of the clamp (15) are of unequal length. 3. Barrette de connexion selon l'une des revendications 1 ou 2, caractérisée en ce que la branche supérieure (16) s'appuie sur le capot sensiblement au droit des contacts électriques.3. Connection strip according to one of claims 1 or 2, characterized in that the upper branch (16) bears on the cover substantially in line with the electrical contacts. 4. Barrette de connexion selon l'une des revendications 1 à 3, caractérisée en ce que la branche inférieure (17) est une branche courte munie d'un bourrelet (30) pour la fixation dans un logement porté par l'embase.4. Connection strip according to one of claims 1 to 3, characterized in that the lower branch (17) is a short branch provided with a bead (30) for fixing in a housing carried by the base. 5. Barrette de connexion selon l'une des revendications 1 à 4, caractérisée en ce que les deux branches de la pince d'une part, et l'embase et le capot d'autre part, sont munis de parties coopérantes du type tenon et logement, assurant la fixation de la pince sur la barrette.5. Connection strip according to one of claims 1 to 4, characterized in that the two branches of the clamp on the one hand, and the base and the cover on the other hand, are provided with cooperating parts of the tenon type and housing, ensuring the attachment of the clamp on the bar. 6. Barrette de connexion selon l'une des revendications 1 à 5, caractérisée en ce que la branche de la pince qui s'appuie sur le capot porte à ses extrémités deux tourillons qui peuvent pivoter dans deux logements portés par le capot.6. Connection strip according to one of claims 1 to 5, characterized in that the branch of the clamp which rests on the cover carries at its ends two pins which can pivot in two housings carried by the cover. 7. Barrette de connexion selon l'une des revendications 1 à 6, caractérisée en ce que la base de liaison de la pince porte des ouvertures.7. Connection strip according to one of claims 1 to 6, characterized in that the connection base of the clamp carries openings. 8. Barrette de connexion selon la revendication 7, caractérisée en ce qu'elle comporte un levier coudé, disposé à travers une desdites ouvertures, la partie coudée étant insérée entre l'embase et la base de liaison de la pince, levier assurant par rotation autour d'une direction parallèle à l'axe longitudinal de la barrette l'ouverture de celle-ci.8. Connection strip according to claim 7, characterized in that it comprises a bent lever, arranged through one of said openings, the bent part being inserted between the base and the connection base of the clamp, lever ensuring by rotation around a direction parallel to the longitudinal axis of the bar the opening of the latter. 9. Connecteur pour carte enfichable, caractérisé en ce qu'il comporte au moins une barrette selon l'une quelconque des revendications précédentes.9. Connector for plug-in card, characterized in that it comprises at least one bar according to any one of the preceding claims.
EP81400108A 1980-02-07 1981-01-27 Connexion strip for a pluggable card and connector provided with such a strip Expired EP0034081B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8002676 1980-02-07
FR8002676A FR2475809A1 (en) 1980-02-07 1980-02-07 CONNECTOR BAR FOR CONNECTOR CARD, AND CONNECTOR PROVIDED WITH SUCH BARRETTES

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EP0034081A1 true EP0034081A1 (en) 1981-08-19
EP0034081B1 EP0034081B1 (en) 1984-03-28

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EP81400108A Expired EP0034081B1 (en) 1980-02-07 1981-01-27 Connexion strip for a pluggable card and connector provided with such a strip

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US (1) US4350403A (en)
EP (1) EP0034081B1 (en)
JP (1) JPS56126276A (en)
CA (1) CA1160704A (en)
DE (1) DE3162847D1 (en)
FR (1) FR2475809A1 (en)

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CN107425312A (en) * 2012-08-07 2017-12-01 莫列斯有限公司 Card connector and card connector

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US4527848A (en) * 1983-12-27 1985-07-09 Northern Telecom Limited High density low profile multiple contact connector
FR2568419B1 (en) * 1984-07-27 1986-09-05 Commissariat Energie Atomique HIGH DENSITY CONTACT MICROCONNECTOR.
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US5540724A (en) * 1995-02-03 1996-07-30 Intermedics, Inc. Cardiac cardioverter/defibrillator with in vivo impedance estimation
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US20060099844A1 (en) * 2002-08-19 2006-05-11 Anderson Power Products Plate locking systems for mated electrical connectors and methods thereof
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ITTO20100677A1 (en) * 2010-08-04 2012-02-05 Tyco Electronics Amp Italia Srl ELECTRICAL CONNECTOR ACTIVATING A DIRECT CONTACT BETWEEN AN ELECTRIC CONDUCTOR AND A RESPECTIVE COUNTERPARTY
DE102011103854B4 (en) * 2011-05-25 2015-04-02 Lumberg Connect Gmbh Connector for connecting two printed circuit boards
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EP0147092A2 (en) * 1983-12-27 1985-07-03 Northern Telecom Limited High density low profile multiple contact connector
EP0147092A3 (en) * 1983-12-27 1987-01-21 Northern Telecom Limited High density low profile multiple contact connector
CN107425312A (en) * 2012-08-07 2017-12-01 莫列斯有限公司 Card connector and card connector
CN107425312B (en) * 2012-08-07 2020-04-24 莫列斯有限公司 Card connector and connector for card

Also Published As

Publication number Publication date
FR2475809A1 (en) 1981-08-14
JPS56126276A (en) 1981-10-03
DE3162847D1 (en) 1984-05-03
FR2475809B1 (en) 1983-08-19
EP0034081B1 (en) 1984-03-28
US4350403A (en) 1982-09-21
CA1160704A (en) 1984-01-17

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