EP1851835B1 - Female electrical contact comprising spring contact plates - Google Patents

Female electrical contact comprising spring contact plates Download PDF

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Publication number
EP1851835B1
EP1851835B1 EP06706530A EP06706530A EP1851835B1 EP 1851835 B1 EP1851835 B1 EP 1851835B1 EP 06706530 A EP06706530 A EP 06706530A EP 06706530 A EP06706530 A EP 06706530A EP 1851835 B1 EP1851835 B1 EP 1851835B1
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EP
European Patent Office
Prior art keywords
plate
contact
housing
spring element
wall
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
EP06706530A
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German (de)
French (fr)
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EP1851835A1 (en
Inventor
Claude Casses
Dominique Rozet
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FCI SA
Original Assignee
FCI SA
Framatome Connectors International SAS
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Publication date
Application filed by FCI SA, Framatome Connectors International SAS filed Critical FCI SA
Priority to PL06706530T priority Critical patent/PL1851835T3/en
Publication of EP1851835A1 publication Critical patent/EP1851835A1/en
Application granted granted Critical
Publication of EP1851835B1 publication Critical patent/EP1851835B1/en
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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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending
    • 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

Definitions

  • the present invention relates to a female electrical contact with spring contact blades.
  • the female contacts comprising a cage of quadrilateral section and provided with internal contact blades made by folding cutting a metal strip intended to make an electrical contact by cooperation with complementary pin contacts frequently include a spring element additional to the contact blade allowing to guarantee a sufficient contact pressure when coupling said female contacts and said pin contacts.
  • This spring element which is applied to a portion of the contact blade, is either cut and folded into the metal strip for making the cage, or a spring element attached and inserted into the cage.
  • a contact blade pre-cut spring in the metal strip and folded from the rear to the front of the cage is prestressed by a spring element itself cut into the strip and folded from the front of the cage to the back of the cage.
  • a spring element cut and folded from the back to the front, comes, when inserting a pin contact, resting on a folded contact blade of the back to the front.
  • This spring element is however spaced from the contact blade in the absence of the complementary pin contact.
  • a folded structure from the front of the cage protects the blade during the introduction of a complementary pin contact. This structure is however not in contact with the free end of the blade.
  • the present invention aims to improve the spring leaf contacts in particular by ensuring a significant contact pressure by applying a preload on the spring blade, while retaining reduced outside contact dimensions and limiting the number of folds required.
  • the present invention mainly relates to a female electrical contact with a cut cage folded from a metal strip and comprising at least one contact blade, extending along a longitudinal axis of the cage, and provided with a contact section with a complementary contact pin, the contact blade comprising a connection part to the cage and a free end, characterized in that it comprises a spring element cut in extension of said contact blade before folding and forming against -blade after folding.
  • the spring element and the blade are formed on either side of the connecting portion.
  • the blade and the blade against are cut in extension in the same sheet, one being folded over the other to be fully enclosed in the cage after folding.
  • the cage electrical contact represented in figure 1 is intended to receive a complementary pin 4.
  • This cut contact bent from a metal strip 1 shown in FIG. figure 3 comprises at least one contact blade 2, extending along a longitudinal axis A of the cage.
  • the contact blade is made in the strip consisting of a metal alloy having good electrical characteristics and a sufficient stiffness so that the blade has spring qualities guaranteeing a pressure of important contact on the complementary spindle 4.
  • the alloys corresponding to these characteristics are, for example, nickel-copper or non-nickel-plated copper-aluminum alloys.
  • the contact and in particular the cage are made by successive folding of the strip 1.
  • the cage is formed by successive bends in sequence and, following the folding on the Figure 4A there is in the following order: a strip in which the blade and the blade are made, a strip intended to produce an upper wall 14 carrying the blade, a strip for a first lateral wall 15 of the cage, a lower wall 13 of the cage carrying a boss 12 and a strip intended to form at least part of a second side wall 16 of the cage.
  • the folding of the strip 1 begins with the formation of the curvature of the blade 2 and against the blade formed by the spring element 7 as shown in FIG. Figures 4B and 4C .
  • connecting portion 5 is folded laterally on a wall 14 of the cage once the element bears against the blade 2, as shown in FIG. Figures 4D .
  • the blade and the blade against are cut on an outer edge of the strip to be found after folding fully enclosed in the cage.
  • the rest of the folding is then performed around a lower wall 13, which is extended by a segment 21 for connecting a cable, by a first folding forming, on one side of this lower wall 13, the upper wall 14 carrying the blade, a second folding forming a first lateral wall 15 and, on the other side of this lower wall 13, at least part of a second lateral wall 16.
  • the blade is provided with a contact section 3 with the complementary contact pin 4.
  • the pin once introduced into the cage, is pinched between the contact blade and a boss 12 made in a floor 13 of the cage, this floor extending in this example by the part of connection 21 to a traditional cable that will not be more explicit here.
  • the contact blade 2, made by folding cut, is finally disposed under the wall 14 opposite the floor of the cage 13.
  • the blade In the direction of the longitudinal axis of the cage, from the rear to the front, the blade comprises an end or part 5 of connection to the cage, a contact section 3 and a free end 6, the contact section 3 being an intermediate portion of the blade between the end of connection to the wall 14 and the free end 6.
  • the contact according to the invention comprises, in parallel with said blade 2, a spring element 7 comprising an end 8 of connection to the cage, which in the example is attached to the connection part 5 to the cage of the blade 2, an intermediate portion 9 along the blade and a free end 10 applied to a face of the blade opposite to the face of the blade intended to come into contact with the complementary pin.
  • This spring element is shaped to push the blade in the direction perpendicular to the longitudinal axis A of the cage towards the inside of the cage.
  • the female contact 2 further comprises a flap 11 which extends the front of the wall 14 of the cage carrying the blade 2 and which is folded towards the inside of the cage so that the flap is applied on the free end 6 of the blade to bring it back to said wall 14.
  • the contact comprises a single blade 2 facing the boss 12 disposed on a wall 13 of the cage opposite the blade 2 relative to said axis A.
  • the cage must have a good resistance in bending or torsion and, according to a particular embodiment, the wall 14 carrying the blade comprises at least one folded lateral part 18, 19, represented in particular in figure 4D and forming a complementary element of the wall 16.
  • said second side wall 16 is extended laterally by a crenel 17, embedded between two folded side portions 18, 19 of the wall 14 carrying the blade to stiffen the cage.
  • the spring element 7 comprises, close to its connection end to the cage, a boss 20 bearing against the wall 14 of the cage carrying the blade 2.
  • This boss 20 makes it possible to fix with precision the point of articulation of the spring element 7 and thus to limit the fluctuations of the stiffness of the latter, which could appear because of the manufacturing differences.
  • the spring element 7 is curved with a radius of curvature smaller than the radius of curvature of the blade, which, at least in the absence of complementary pin contact, makes it possible to ensure that the spring element bears against the blade 2 by its free end 10 and not by any portion of its length, so that the active length of the spring element is well determined.
  • the contact section 3 with the pin contact 4 is reduced.
  • the contact section of the blade has a curved contact zone.
  • the end 10 of the spring element 7 is applied to the blade 2 in the rear part of said contact zone with respect to the insertion direction D of the complementary pin contact 4.
  • the blade and the spring element extend from the rear towards the front (the spindle receiving part) of the cage the connection ends of the spring and the blade 5, 8 being rear ends of the spring and the blade, the free ends of the spring and the blade 6, 10 extending from the rear of the cage towards the front of the cage.
  • the blade is curved in shape and folded to deviate from the plane of the strip.
  • This folding is performed so that the blade deviates from a distance C1 of the wall 14 carrying the blade 2, this distance being represented on the Figure 5A in side view.
  • the spring element is then bent and folded 180 ° to constrain the blade to move away from the wall by a distance C2 greater than the distance C1.
  • the blade assembly, spring element is folded at 180 ° on the lower face of the wall 14 as shown in FIG. figure 4D to position the blade and the spring element as shown in Figure 5B .
  • the flap 11 is applied against the end 6 of the blade on the face opposite to the face of the blade receiving the spring element to bring the blade to a distance C3 of said wall, the distance C3 being less than the distance C2 so that the pressure applied to the blade by the spring element is increased and so that the position of the blade in the cage is established precisely with respect to the internal dimensions of the cage and the insertion axis D of the pin contact 4.
  • the strips to form the walls of the cage are folded in sequence and the slot 17 is itself folded to close the cage.
  • the contact according to the invention remains small because of the small number of necessary bends, the contact pressure is important because of the presence of a counterblade made by a spring element trapped between the wall bearing the blade contact and the latter and the folded cage has no openings or protruding parts that can injure the joints through which the contact must be positioned in the context of applications of automotive connections.
  • the invention is not limited to the example shown and is applicable in particular to a contact having two contact blades facing each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Multi-Conductor Connections (AREA)

Abstract

The invention relates to a female electrical contact including a housing which is cut and folded from a metal strip and which includes at least one contact plate which extends along the longitudinal axis (A) of the housing and which is equipped with a section that is in contact with a complementary contact pin. According to the invention, the contact plate includes part for connecting to the housing and a free end. The invention also includes a spring element which is cut from the extension of the contact plate prior to folding, such as to form a counter plate after folding. The spring element and the plate are provided, for example, on either side of the above-mentioned connection part.

Description

La présente invention concerne un contact électrique femelle à lames de contact ressort.The present invention relates to a female electrical contact with spring contact blades.

Les contacts femelles comprenant une cage de section quadrilatérale et pourvus de lames de contacts internes réalisé par découpe pliage d'un feuillard métallique destinés à réaliser un contact électrique par coopération avec des contacts broches complémentaires comportent fréquemment un élément ressort additionnel à la lame de contact permettant de garantir une pression de contact suffisante lors de l'accouplement desdits contacts femelles et desdits contacts broches.The female contacts comprising a cage of quadrilateral section and provided with internal contact blades made by folding cutting a metal strip intended to make an electrical contact by cooperation with complementary pin contacts frequently include a spring element additional to the contact blade allowing to guarantee a sufficient contact pressure when coupling said female contacts and said pin contacts.

Cet élément ressort, qui s'applique sur une partie de la lame contact, est soit découpé et plié dans le feuillard métallique destiné à réaliser la cage, soit un élément ressort rapporté et inséré dans la cage.This spring element, which is applied to a portion of the contact blade, is either cut and folded into the metal strip for making the cage, or a spring element attached and inserted into the cage.

Un exemple de réalisation d'un contact femelle à cage munie de lames de contact ressort internes comportant un élément ressort complémentaire est décrit dans le document JP 9-232021 .An embodiment of a female cage contact provided with internal spring contact blades comprising a complementary spring element is described in the document JP 9-232021 .

Selon un mode de réalisation décrit dans ce document, une lame de contact ressort pré-découpée dans le feuillard métallique et repliée de l'arrière vers l'avant de la cage est mise en précontrainte par un élément ressort lui même découpé dans le feuillard et replié de l'avant de la cage vers l'arrière de la cage.According to an embodiment described in this document, a contact blade pre-cut spring in the metal strip and folded from the rear to the front of the cage is prestressed by a spring element itself cut into the strip and folded from the front of the cage to the back of the cage.

Dans une variante de réalisation décrite dans ce document, un élément ressort, découpé puis replié de l'arrière vers l'avant, vient, lors de l'insertion d'un contact broche, en appui sur une lame de contact repliée de l'arrière vers l'avant.In an alternative embodiment described in this document, a spring element, cut and folded from the back to the front, comes, when inserting a pin contact, resting on a folded contact blade of the back to the front.

Cet élément ressort est toutefois espacé de la lame de contact en l'absence du contact broche complémentaire.This spring element is however spaced from the contact blade in the absence of the complementary pin contact.

Selon ce même mode de réalisation, une structure repliée à partir de l'avant de la cage protège la lame lors de l'introduction d'un contact broche complémentaire. Cette structure n'est toutefois pas en contact avec l'extrémité libre de la lame.According to this same embodiment, a folded structure from the front of the cage protects the blade during the introduction of a complementary pin contact. This structure is however not in contact with the free end of the blade.

Le document US-B-6428366 montre un contact selon le préambule de la revendication 1.The document US-B-6428366 shows a contact according to the preamble of claim 1.

La présente invention vise à perfectionner les contacts à lames ressort notamment en assurant une pression de contact importante par l'application d'une précontrainte sur la lame ressort, ce en conservant des dimensions extérieures de contact réduites et en limitant le nombre de pliages nécessaires.The present invention aims to improve the spring leaf contacts in particular by ensuring a significant contact pressure by applying a preload on the spring blade, while retaining reduced outside contact dimensions and limiting the number of folds required.

Pour ce faire, la présente invention concerne principalement un contact électrique femelle à cage découpé plié à partir d'un feuillard métallique et comprenant au moins une lame de contact, s'étendant selon un axe longitudinal de la cage, et, pourvue d'une section de contact avec une broche de contact complémentaire, la lame de contact comprenant une partie de raccordement à la cage et une extrémité libre, caractérisé en ce qu'il comporte un élément ressort découpé en prolongement de ladite lame de contact avant pliage et formant contre-lame après pliage.To do this, the present invention mainly relates to a female electrical contact with a cut cage folded from a metal strip and comprising at least one contact blade, extending along a longitudinal axis of the cage, and provided with a contact section with a complementary contact pin, the contact blade comprising a connection part to the cage and a free end, characterized in that it comprises a spring element cut in extension of said contact blade before folding and forming against -blade after folding.

Plus particulièrement, l'élément ressort et la lame sont réalisées de part et d'autre de la partie de raccordement.More particularly, the spring element and the blade are formed on either side of the connecting portion.

Ainsi, la lame et la contre lame sont découpées en prolongement dans la même tôle l'une étant rabattue sur l'autre pour se trouver entièrement enfermées dans la cage après pliage.Thus, the blade and the blade against are cut in extension in the same sheet, one being folded over the other to be fully enclosed in the cage after folding.

D'autres caractéristiques et avantages de l'invention seront mieux compris à la lecture de la description qui va suivre d'un exemple de réalisation non limitatif de l'invention en référence aux figures qui représentent:

  • en figure 1: une vue de côté en coupe d'un contact femelle selon l'invention en vis à vis d'une broche complémentaire;
  • en figure 2: une vue en perspective trois quart arrière du contact de la figure 1;
  • en figure 3: une partie de feuillard découpée pour réaliser le contact de la figure 1;
  • en figures 4A à 4D: des vues en perspective de stades successifs de réalisation du contact de la figure 1;
  • en figures 5A à 5C: des vues de côté des stades de fabrication des figures 4C et 4D et d'une étape de repli d'un rabat selon l'invention.
Other features and advantages of the invention will be better understood on reading the following description of a nonlimiting exemplary embodiment of the invention with reference to the figures which represent:
  • in figure 1 : A side view in section of a female contact according to the invention with respect to a complementary pin;
  • in figure 2 : a three-quarter perspective view of the contact of the figure 1 ;
  • in figure 3 : a part of strip cut to realize the contact of the figure 1 ;
  • in Figures 4A to 4D : perspective views of successive stages of realization of the contact of the figure 1 ;
  • in FIGS. 5A to 5C : side views of the manufacturing stages of Figures 4C and 4D and a folding step of a flap according to the invention.

Le contact électrique femelle à cage représenté en figure 1 est destiné à recevoir une broche complémentaire 4. Ce contact, découpé plié à partir d'un feuillard métallique 1 représenté en figure 3 comprend au moins une lame de contact 2, s'étendant selon un axe longitudinal A de la cage.The cage electrical contact represented in figure 1 is intended to receive a complementary pin 4. This cut contact bent from a metal strip 1 shown in FIG. figure 3 comprises at least one contact blade 2, extending along a longitudinal axis A of the cage.

La lame de contact est réalisée dans le feuillard constitué d'un alliage métallique possédant de bonnes caractéristiques électriques et une raideur suffisante pour que la lame ait des qualités ressort garantissant une pression de contact importante sur la broche complémentaire 4. Les alliages répondant à ces caractéristiques sont par exemple des alliages cupro-bérylium nickelés ou non.The contact blade is made in the strip consisting of a metal alloy having good electrical characteristics and a sufficient stiffness so that the blade has spring qualities guaranteeing a pressure of important contact on the complementary spindle 4. The alloys corresponding to these characteristics are, for example, nickel-copper or non-nickel-plated copper-aluminum alloys.

Le contact et notamment la cage sont réalisés par pliage successifs du feuillard 1.The contact and in particular the cage are made by successive folding of the strip 1.

La cage est formée par pliages successifs en séquence et, en suivant le pliage sur la figure 4A on trouve dans l'ordre: une bande dans laquelle la lame et la contre lame sont réalisées, une bande destinée à réaliser un paroi supérieure 14 portant la lame, une bande destinée une première paroi latérale 15 de la cage, une paroi inférieure 13 de la cage portant un bossage 12 et une bande destinée à former au moins partie d'une seconde paroi latérale 16 de la cage.The cage is formed by successive bends in sequence and, following the folding on the Figure 4A there is in the following order: a strip in which the blade and the blade are made, a strip intended to produce an upper wall 14 carrying the blade, a strip for a first lateral wall 15 of the cage, a lower wall 13 of the cage carrying a boss 12 and a strip intended to form at least part of a second side wall 16 of the cage.

Le pliage du feuillard 1 commence par la formation de la courbure de la lame 2 et de la contre-lame constituée par l'élément ressort 7 comme représenté en figures 4B et 4C.The folding of the strip 1 begins with the formation of the curvature of the blade 2 and against the blade formed by the spring element 7 as shown in FIG. Figures 4B and 4C .

Ensuite, la partie de raccordement 5 est repliée latéralement sur une paroi 14 de la cage une fois l'élément ressort en appui sur la lame 2, comme représenté en figures 4D.Then, the connecting portion 5 is folded laterally on a wall 14 of the cage once the element bears against the blade 2, as shown in FIG. Figures 4D .

Dès cet instant la lame et la contre lame sont protégées par la paroi 14 et formées définitivement, la contre lame étant emprisonnée entre la paroi 14 et la lame 2.From this moment the blade and the blade against are protected by the wall 14 and formed permanently, the against blade being trapped between the wall 14 and the blade 2.

Selon ce mode de réalisation, la lame et la contre lame sont découpées sur un bord extérieur du feuillard pour se retrouver après pliage entièrement enfermées dans la cage.According to this embodiment, the blade and the blade against are cut on an outer edge of the strip to be found after folding fully enclosed in the cage.

Le reste du pliage est réalisé ensuite autour d'une paroi inférieure 13, qui se prolonge par un segment 21 de raccordement d'un câble, par un premier pliage formant, d'un côté de cette paroi inférieure 13, la paroi supérieure 14 portant la lame, un second pliage formant une première paroi latérale 15 et, de l'autre côté de cette paroi inférieure 13, au moins partie d'une seconde paroi latérale 16.The rest of the folding is then performed around a lower wall 13, which is extended by a segment 21 for connecting a cable, by a first folding forming, on one side of this lower wall 13, the upper wall 14 carrying the blade, a second folding forming a first lateral wall 15 and, on the other side of this lower wall 13, at least part of a second lateral wall 16.

Pour réaliser le contact électrique, la lame est pourvue d'une section 3 de contact avec la broche de contact 4 complémentaire.To make the electrical contact, the blade is provided with a contact section 3 with the complementary contact pin 4.

Dans le cas de l'exemple décrit, la broche, une fois introduite dans la cage, est pincée entre la lame de contact et un bossage 12 réalisé dans un plancher 13 de la cage, ce plancher se prolongeant dans cet exemple par la partie de raccordement 21 à un câble traditionnelle qui ne sera pas plus explicité ici.In the case of the example described, the pin, once introduced into the cage, is pinched between the contact blade and a boss 12 made in a floor 13 of the cage, this floor extending in this example by the part of connection 21 to a traditional cable that will not be more explicit here.

La lame de contact 2, réalisée par découpe pliage, se trouve en final disposée sous la paroi 14 opposée au plancher de la cage 13.The contact blade 2, made by folding cut, is finally disposed under the wall 14 opposite the floor of the cage 13.

Dans le sens de l'axe longitudinal de la cage, de l'arrière vers l'avant, la lame comprend une extrémité ou partie 5 de raccordement à la cage, une section de contact 3 et une extrémité libre 6, la section de contact 3 étant une partie intermédiaire de la lame entre l'extrémité de raccordement à la paroi 14 et l'extrémité libre 6.In the direction of the longitudinal axis of the cage, from the rear to the front, the blade comprises an end or part 5 of connection to the cage, a contact section 3 and a free end 6, the contact section 3 being an intermediate portion of the blade between the end of connection to the wall 14 and the free end 6.

Le contact selon l'invention comporte, en parallèle avec ladite lame 2, un élément ressort 7 comprenant une extrémité 8 de raccordement à la cage, qui dans l'exemple se rattache à la partie 5 de raccordement à la cage de la lame 2, une partie intermédiaire 9 longeant la lame et une extrémité libre 10 appliquée sur une face de la lame opposée à la face de la lame destinée à venir en contact avec la broche complémentaire.The contact according to the invention comprises, in parallel with said blade 2, a spring element 7 comprising an end 8 of connection to the cage, which in the example is attached to the connection part 5 to the cage of the blade 2, an intermediate portion 9 along the blade and a free end 10 applied to a face of the blade opposite to the face of the blade intended to come into contact with the complementary pin.

Cet élément ressort est conformé pour pousser la lame dans la direction perpendiculaire à l'axe longitudinal A de la cage vers l'intérieur de la cage.This spring element is shaped to push the blade in the direction perpendicular to the longitudinal axis A of the cage towards the inside of the cage.

Le contact femelle 2 selon l'invention comporte en outre un rabat 11 qui prolonge l'avant de la paroi 14 de la cage portant la lame 2 et qui est replié vers l'intérieur de la cage de sorte que le rabat s'applique sur l'extrémité libre 6 de la lame pour la ramener vers ladite paroi 14.The female contact 2 according to the invention further comprises a flap 11 which extends the front of the wall 14 of the cage carrying the blade 2 and which is folded towards the inside of the cage so that the flap is applied on the free end 6 of the blade to bring it back to said wall 14.

Selon l'exemple décrit, le contact comporte une unique lame 2 en regard du bossage 12 disposé sur une paroi 13 de la cage opposée à la lame 2 par rapport audit axe A.According to the example described, the contact comprises a single blade 2 facing the boss 12 disposed on a wall 13 of the cage opposite the blade 2 relative to said axis A.

La cage doit présenter une bonne résistance en flexion ou en torsion et, selon un mode de réalisation particulier, la paroi 14 portant la lame comporte au moins une partie latérale rabattue 18, 19, représentée notamment en figure 4D et formant un élément complémentaire de la paroi 16.The cage must have a good resistance in bending or torsion and, according to a particular embodiment, the wall 14 carrying the blade comprises at least one folded lateral part 18, 19, represented in particular in figure 4D and forming a complementary element of the wall 16.

En complément, pour refermer la cage, ladite seconde paroi latérale 16 est prolongée latéralement par un créneau 17, d'encastrement entre deux parties latérales rabattues 18, 19 de la paroi 14 portant la lame afin de rigidifier la cage.In addition, to close the cage, said second side wall 16 is extended laterally by a crenel 17, embedded between two folded side portions 18, 19 of the wall 14 carrying the blade to stiffen the cage.

En revenant à la figure 1 on remarque que l'élément ressort 7 comporte, à proximité de son extrémité de raccordement à la cage, un bossage 20 en appui contre la paroi 14 de la cage portant la lame 2.Returning to figure 1 it is noted that the spring element 7 comprises, close to its connection end to the cage, a boss 20 bearing against the wall 14 of the cage carrying the blade 2.

Ce bossage 20 permet de fixer avec précision le point d'articulation de l'élément ressort 7 et donc de limiter les fluctuations de la raideur de ce dernier, qui pourraient apparaître du fait des écarts de fabrication.This boss 20 makes it possible to fix with precision the point of articulation of the spring element 7 and thus to limit the fluctuations of the stiffness of the latter, which could appear because of the manufacturing differences.

Avantageusement l'élément ressort 7 est courbé selon un rayon de courbure plus petit que le rayon de courbure de la lame ce qui, au moins en l'absence de contact broche complémentaire, permet d'assurer que l'élément ressort est en appui contre la lame 2 par son extrémité libre 10 et non par une portion quelconque de sa longueur, de telle manière que la longueur active de l'élément ressort est bien déterminée.Advantageously, the spring element 7 is curved with a radius of curvature smaller than the radius of curvature of the blade, which, at least in the absence of complementary pin contact, makes it possible to ensure that the spring element bears against the blade 2 by its free end 10 and not by any portion of its length, so that the active length of the spring element is well determined.

En outre, pour accroître la pression de contact, la section de contact 3 avec le contact broche 4 est réduite. Pour ce faire, la section de contact de la lame comporte une zone de contact courbée.In addition, to increase the contact pressure, the contact section 3 with the pin contact 4 is reduced. To do this, the contact section of the blade has a curved contact zone.

Selon l'exemple, l'extrémité 10 de l'élément ressort 7 s'applique sur la lame 2 en partie arrière de ladite zone de contact par rapport à la direction D d'insertion du contact broche 4 complémentaire.According to the example, the end 10 of the spring element 7 is applied to the blade 2 in the rear part of said contact zone with respect to the insertion direction D of the complementary pin contact 4.

Selon l'exemple, la lame et l'élément ressort s'étendent de l'arrière vers l'avant (la partie de réception de la broche) de la cage les extrémités de raccordement du ressort et de la lame 5, 8 étant des extrémités arrières du ressort et de la lame, les extrémités libres du ressort et de la lame 6, 10 s'étendant de l'arrière de la cage vers l'avant de la cage.According to the example, the blade and the spring element extend from the rear towards the front (the spindle receiving part) of the cage the connection ends of the spring and the blade 5, 8 being rear ends of the spring and the blade, the free ends of the spring and the blade 6, 10 extending from the rear of the cage towards the front of the cage.

La réalisation de la cage est plus particulièrement représentée aux figures 4A à 4D et 5A à 5C.The realization of the cage is more particularly represented in Figures 4A to 4D and 5A to 5C .

La réalisation du contact femelle est précisée ci-après.The realization of the female contact is specified below.

En partant de la découpe du feuillard représentée en figure 4A, en premier lieu et selon la figure 4B, la lame est courbée en forme et pliée pour s'écarter du plan du feuillard.Starting from the cutting of the strip represented in Figure 4A in the first place and according to the Figure 4B , the blade is curved in shape and folded to deviate from the plane of the strip.

Ce pliage est réalisé pour que la lame s'écarte d'une distance C1 de la paroi 14 portant la lame 2, cette distance étant représentée sur la figure 5A en vue de côté.This folding is performed so that the blade deviates from a distance C1 of the wall 14 carrying the blade 2, this distance being represented on the Figure 5A in side view.

Comme représenté aux figures 4C et 5A, l'élément ressort est ensuite courbé et replié à 180° pour contraindre la lame à s'éloigner de la paroi d'une distance C2 supérieure à la distance C1.As represented in Figures 4C and 5A the spring element is then bent and folded 180 ° to constrain the blade to move away from the wall by a distance C2 greater than the distance C1.

Dans cette position, l'élément ressort applique une pression sur la lame la forçant vers l'intérieur de la cage.In this position, the spring member applies pressure to the blade forcing it into the cage.

Dans le cas particulier de l'exemple représentée, l'ensemble lame, élément ressort est replié à 180° sur la face inférieure de la paroi 14 comme représenté en figure 4D pour positionner la lame et l'élément ressort comme représenté en figure 5B.In the particular case of the example shown, the blade assembly, spring element is folded at 180 ° on the lower face of the wall 14 as shown in FIG. figure 4D to position the blade and the spring element as shown in Figure 5B .

Enfin et selon la figure 5C, le rabat 11 est appliqué contre l'extrémité 6 de la lame sur la face opposée à la face de la lame recevant l'élément ressort pour ramener la lame à une distance C3 de ladite paroi, la distance C3 étant inférieure à la distance C2 de sorte que la pression appliquée sur la lame par l'élément ressort est accrue et de sorte que la position de la lame dans la cage soit établie de façon précise par rapport aux dimensions internes de la cage et l'axe D d'introduction du contact broche 4.Finally and according to the Figure 5C , the flap 11 is applied against the end 6 of the blade on the face opposite to the face of the blade receiving the spring element to bring the blade to a distance C3 of said wall, the distance C3 being less than the distance C2 so that the pressure applied to the blade by the spring element is increased and so that the position of the blade in the cage is established precisely with respect to the internal dimensions of the cage and the insertion axis D of the pin contact 4.

Après ces opérations, les bandes devant former les parois de la cage sont pliées en séquence et le créneau 17 est lui même replié pour refermer la cage.After these operations, the strips to form the walls of the cage are folded in sequence and the slot 17 is itself folded to close the cage.

Ainsi, le contact selon l'invention reste de dimensions réduites du fait du faible nombre de pliages nécessaires, la pression de contact est importante du fait de la présence d'une contre-lame réalisée par un élément ressort emprisonnée entre la paroi portant la lame de contact et cette dernière et la cage repliée ne comporte pas d'ouvertures ou de pièces saillantes pouvant blesser les joints au travers desquels le contact doit être positionné dans le cadre d'applications de connectique automobile.Thus, the contact according to the invention remains small because of the small number of necessary bends, the contact pressure is important because of the presence of a counterblade made by a spring element trapped between the wall bearing the blade contact and the latter and the folded cage has no openings or protruding parts that can injure the joints through which the contact must be positioned in the context of applications of automotive connections.

L'invention ne se limite pas à l'exemple représenté et est applicable notamment à un contact comportant deux lames de contact en vis à vis.The invention is not limited to the example shown and is applicable in particular to a contact having two contact blades facing each other.

Claims (11)

  1. A female electrical contact with housing cut and folded from a metal sheet (1) and comprising at least one contact plate (2), extending along a longitudinal axis (A) of the housing, and, provided with a section (3) for contact with a complementary contact pin (4), the contact plate comprising a part (5) for connecting to the housing and a free end (6), having a spring element (7) cut out in lengthways extension of said contact plate before folding and forming a counter-plate after folding, characterized in that free ends (6, 10) of the spring and the plate extend, after folding, from the back to the front of the housing.
  2. The contact according to claim 1, further characterized in that spring element (7) and plate (2) are created on either side of connecting part (5).
  3. The contact according to claim 1 or 2, further characterized in that the spring element comes to be supported on the plate by means of folding at 180°.
  4. The contact according to one of claims 1 to 3, further characterized in that connecting part (5) is folded laterally onto a wall (14) of the housing after the spring element rests on plate (2).
  5. The contact according to one of claims 1 to 4, further characterized in that it has a single plate (2) facing a boss (12) positioned on a wall (13) of the housing opposite plate (2) with regard to said axis (A).
  6. The contact according to claim 5, further characterized in that the housing is created by folding metal sheet (1) around a lower wall (13) to form an upper wall (14) bearing the plate and a first lateral wall (15) on one side of this lower wall (13) and at least part of a second lateral wall (16) on the other side of this lower wall (13), the plate and the counter-plate being cut out of an outer edge of the metal sheet so as to be entirely enclosed in the housing after folding.
  7. The contact according to one of the preceding claims, further characterized in that spring element (7) is imprisoned between a wall (14) of the housing and plate (2) and, near the part for connecting to the housing, has a boss (20) for support against wall (14) of the housing bearing plate (2) and forming a stiffener.
  8. The contact according to one of the preceding claims, further characterized in that spring element (7) is curved along a radius of curvature smaller than the radius of curvature of the plate so that, at least in the absence of the complementary contact pin, only a free end (10) of the spring element rests against plate (2).
  9. The contact according to one of the preceding claims, further characterized in that contact section (3) of the plate has a curved contact zone, end (10) of spring element (7) being applied onto plate (2) at the rear part of said contact zone relative to direction (D) for insertion of complementary contact pin (4).
  10. The contact according to one of the preceding claims, further characterized in that said ends for connecting the spring and the plate (5, 8) are rear ends of the spring and the plate.
  11. The contact according to one of the preceding claims, further characterized in that it has a flap (11), extending the front of a wall (14) of the housing bearing plate (2) and is folded back toward the inside of the housing, the flap being applied onto free end (6) of the plate to bring it towards said wall (14) counteracting the force applied onto plate (2) by spring element (7).
EP06706530A 2005-02-09 2006-01-31 Female electrical contact comprising spring contact plates Active EP1851835B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06706530T PL1851835T3 (en) 2005-02-09 2006-01-31 Female electrical contact comprising spring contact plates

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0550385 2005-02-09
PCT/EP2006/000843 WO2006084608A1 (en) 2005-02-09 2006-01-31 Female electrical contact comprising spring contact plates

Publications (2)

Publication Number Publication Date
EP1851835A1 EP1851835A1 (en) 2007-11-07
EP1851835B1 true EP1851835B1 (en) 2008-12-17

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ID=34977110

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06706530A Active EP1851835B1 (en) 2005-02-09 2006-01-31 Female electrical contact comprising spring contact plates

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US (1) US8043130B2 (en)
EP (1) EP1851835B1 (en)
JP (1) JP5138385B2 (en)
KR (1) KR101121255B1 (en)
CN (1) CN101133527B (en)
AT (1) ATE418170T1 (en)
DE (1) DE602006004312D1 (en)
ES (1) ES2317493T3 (en)
PL (1) PL1851835T3 (en)
WO (1) WO2006084608A1 (en)

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US9972932B2 (en) * 2013-08-19 2018-05-15 Fci Americas Technology Llc Electrical connector with high retention force
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Also Published As

Publication number Publication date
US20100130075A1 (en) 2010-05-27
CN101133527A (en) 2008-02-27
US8043130B2 (en) 2011-10-25
JP2008530744A (en) 2008-08-07
CN101133527B (en) 2010-05-19
KR101121255B1 (en) 2012-03-23
ATE418170T1 (en) 2009-01-15
ES2317493T3 (en) 2009-04-16
PL1851835T3 (en) 2009-06-30
EP1851835A1 (en) 2007-11-07
KR20070104648A (en) 2007-10-26
DE602006004312D1 (en) 2009-01-29
JP5138385B2 (en) 2013-02-06
WO2006084608A1 (en) 2006-08-17

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