EP0310487A1 - Cage-type electrical contact terminal - Google Patents

Cage-type electrical contact terminal Download PDF

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Publication number
EP0310487A1
EP0310487A1 EP88402421A EP88402421A EP0310487A1 EP 0310487 A1 EP0310487 A1 EP 0310487A1 EP 88402421 A EP88402421 A EP 88402421A EP 88402421 A EP88402421 A EP 88402421A EP 0310487 A1 EP0310487 A1 EP 0310487A1
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EP
European Patent Office
Prior art keywords
flank
internal
contact
terminal according
terminal
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
EP88402421A
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German (de)
French (fr)
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EP0310487B1 (en
Inventor
Georges Chaillot
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Francelco SA
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Francelco SA
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Publication date
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Publication of EP0310487A1 publication Critical patent/EP0310487A1/en
Application granted granted Critical
Publication of EP0310487B1 publication Critical patent/EP0310487B1/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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/113—Resilient sockets co-operating with pins or blades having a rectangular transverse section

Definitions

  • the invention relates to a one-piece electrical contact terminal, made of cut and folded sheet metal, intended to receive a contact blade. It relates more particularly to a terminal of the type comprising a front body in the form of a cage having an adjoining bottom on two sides each having an internal flank connected laterally to an external flank by a 180 ° fold and having a door portion at the front false contact.
  • Contact terminals of the type defined above are already known, which can be manufactured by cutting, folding and possibly rolling a strip in a much more economical manner than the low-cut terminals.
  • the existing contacts made of cut and folded sheet metal have a certain number of drawbacks. If the parts constituting contact of the internal sides are initially in abutment against one another and oppose a high force to their spacing, which is favorable to the establishment of an electrical connection of good quality, the insertion force is important and there is a risk of incorrect introduction. The first drawback can become serious if a large number of contact terminals are provided in the same connector. If, on the contrary, the parts constituting the contact are initially separated, their support on the contact blade may in certain cases be insufficient to ensure a good electrical connection.
  • each external flank has at the front a flap folded inwards around an edge transverse to the internal flank, retaining the front part of the internal flank. in bending preload in a position where it is out of contact with the other internal flank.
  • the flap which can end very close to the closest areas, ensures the pre-guiding of the contact blade during its introduction.
  • the distance between the contacts is constant regardless of the pressure exerted.
  • the presence of a space between the contact zones makes it possible to deposit an electrolytic protective coating on them. Due to the initial separation of the contact areas, the insertion force of the contact blade is reduced.
  • the invention also aims to provide a contact terminal having improved resistance to crushing so that the rear flap, if provided, does not need to come into abutment abutment against the opposite side, its role merely to avoid, when a sealant is poured into the connector, that the latter does not infiltrate the body of the terminal and subsequently interfere with the electrical connection.
  • the two flanks on each side are folded at right angles in their bearing zone against each other, so that the 180 ° folds are face to face and in close proximity to one of the other. Under these conditions, if a crushing force is exerted on the terminal, these folds come to bear against one another and offer high resistance to deformation.
  • Terminal 10 whose final constitution is shown in Figures 1 and 3 to 7, made from a side of the kind shown in Figure 2, is intended to be inserted in a connector whose general constitution may be conventional.
  • Terminal 10 is in one piece. It can be viewed as having a front body intended to receive a male contact blade 12 and a rear barrel to be crimped 14 of which only a fraction is shown in FIGS. 2 and 4.
  • This barrel comprises two sets of tongues 16 and 18, respectively intended to be crimped on the core and on the sheath of an electric wire 20 ( Figure 3).
  • the body of the terminal 10 has a cage shape having a bottom 22 and two sides 24. Each side 24 is double. It comprises an external flank 26 and an internal flank 28. Each external flank 26 is produced by 90 ° folding of the original blank along one of the lines 30 indicated in phantom in Figure 2.
  • the internal flank 28 is connected to the external flank 26 by a 180 ° fold along the edge indicated at 32 on the FIG. 2.
  • the assembly of the two sides 26 and 28 has a fold at right angles along the lines designated by 34 in FIG. 2.
  • the original blank has notches 36 such that each internal flank 28 is connected to the corresponding external flank 26 only in its rear part.
  • the front part of each internal flank thus constitutes an elastic contact for bearing on the blade 12.
  • each internal flank 28 is divided by a slot 38 over a part of its length from the free end, which allows more regular support.
  • this splitting is not essential.
  • One or both of the contacts could have no slot 38. Conversely, it would be possible to provide more than one slot in each contact.
  • the part of the sides 26 and 28 close to the 180 ° fold constitutes a cage ceiling.
  • the cutting of the original blank leaves tabs 40 bearing abutment against one another and constituting a continuous ceiling in the cantilevered area of the internal flanks 28, while the 180 ° folds remain separated by a gap 42.
  • This solution may be advantageous when the terminal is intended to be placed in a connector where the seal is ensured by penetration of the connector insulator inside the terminal.
  • the cutout may be such that the folds at 180 ° are in contact with each other as indicated in dashes in FIG. 8. The latter solution limits the risk of snagging terminals between them when grouped in bundles or in bulk and ensures complete protection of the contacts.
  • One of the internal sides 28 is extended at the rear by a flap 44 folded at 90 ° ( Figures 2 and 6) and coming to bear against the other internal side.
  • the role of this component is essentially to avoid the infiltration of the overmolding product used to seal the rear of a connector in which the terminal is placed. However, this component can also participate in resistance to crushing.
  • Each internal flank 28 advantageously has a shape of the kind shown in FIG. 6.
  • the cantilever part, forming electrical contact represents a little more than half of the total length of the flank 28 and it is shaped so as to present an inward camber and a thickened elbow directed towards the other flank, in the immediate vicinity of the free end.
  • the elastic force due to the bending of the contact and tending to bring two contacts close together is absorbed by a flap 46 of the corresponding external flank 26, folded back.
  • the fold of the flaps is in front of the end edges of the bottom and the ceiling of the cage and is rounded, which facilitates the introduction of the terminal in an insulator and limits the risk of deterioration of the last.
  • the edges of the bottom and ceiling can be softened.
  • the corners formed by the sides and the ceiling at the back of the body can be broken during manufacture.
  • the external flanks 26 may have cavities 48 of shallow depth (for example representing 20% of the thickness of the flank) opposite the root of each contact of an internal blank 28 and opposite the end part retained by the flap 46.
  • this finger is constituted by an elongated tongue 52 formed during the molding of the insulation, having a lug directed inwards and capable of engaging in the window 50. Because the tongue extends in front of the lug, it is possible to unlock the connector by pushing a tube through the front passage 54 of the insulation (delimited by an annular lip having a gap allowing the mounting of the tongue 52), this tube slipping between the side of the terminal and the tab. Due to the symmetrical location of the two windows 50, the terminal can occupy one or the other of two symmetrical positions in the cell of the insulation.
  • the manufacture is generally carried out by cutting and folding strips of copper alloy having a thickness of 0.3 to 0.4 mm.
  • the strip is cut to give rise to successive blanks of the kind shown in FIG. 2, connected together by a connecting strip 56.
  • the fold lines, indicated by dashed lines in FIG. 2 can be marked with the press.
  • the contacts are shaped by bending and striking intended forming the thickened outward bulge constituting the support zone and the flaps 46 are formed. As shown in FIG.
  • the thickness of the contacts in the free end part and to give the assembly, constituted by the flaps and this free end part of the contacts, a slope, for example of approximately 15 °, which facilitates the introduction of the male contact blade.
  • the recesses 48 can also be formed by striking, before forming the contacts and folding the blank.
  • the invention is not limited to the particular embodiments which have been shown and described by way of examples. It is susceptible to numerous variations. For example, it is possible to form a terminal whose faces are not exactly parallel but have a slope; a notch (in phantom in Figure 4) allowing the passage of the male blade at an angle, which is required for certain sealing embodiments, intended to receive a sealing tongue can be provided at the front of the contact ceiling.

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  • Manufacturing Of Electrical Connectors (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Insulated Conductors (AREA)

Abstract

Une borne de contact électrique, utilisable notamment en électricité automobile, comprend un corps avant en forme de cage ayant un fond attenant à deux côtés (24) ayant chacun un flanc interne (28) raccordé latéralement à un flanc externe (26) par un pli à 180° et présentant à l'avant une partie en porte à faux constituant contact. Chaque flanc externe (26) présente à l'avant un rabat (46) replié vers l'intérieur autour d'une arête transversale au flanc interne, retenant la partie avant du flanc interne (28) en précontrainte de flexion dans une position où elle est hors de contact avec l'autre flanc interne.An electrical contact terminal, usable in particular in automotive electricity, comprises a cage-shaped front body having a bottom adjoining two sides (24) each having an internal flank (28) connected laterally to an external flank (26) by a fold at 180 ° and presenting a cantilevered part constituting a contact at the front. Each external flank (26) has at the front a flap (46) folded inwards around an edge transverse to the internal flank, retaining the front part of the internal flank (28) under bending preload in a position where it is out of contact with the other internal flank.

Description

L'invention concerne une borne de contact électrique d'une seule pièce, en tôle découpée et pliée, destinée à recevoir une lame de contact. Elle concerne plus particulièrement une borne du type comprenant un corps avant en forme de cage ayant un fond attenant à deux côtés ayant chacun un flanc interne raccordé latéralement à un flanc externe par un pli à 180° et présentant à l'avant une partie en porte à faux constituant contact.The invention relates to a one-piece electrical contact terminal, made of cut and folded sheet metal, intended to receive a contact blade. It relates more particularly to a terminal of the type comprising a front body in the form of a cage having an adjoining bottom on two sides each having an internal flank connected laterally to an external flank by a 180 ° fold and having a door portion at the front false contact.

On connaît déjà des bornes de contact du type ci-dessus défini, pouvant être fabriquées par découpage, pliage et éventuellement roulage d'un feuillard de façon beaucoup plus économique que les bornes décolletées. En contrepartie, les contacts existants en tôle découpée et pliée présentent un certain nombre d'inconvénients. Si les parties constituant contact des flancs internes sont initialement en appui l'une contre l'autre et opposent une force élevée à leur écartement, ce qui est favorable à l'établissement d'une liaison électrique de bonne qua­lité, la force d'insertion est importante et il existe un risque de mauvaise introduction. Le premier inconvé­nient peut devenir grave si un grand nombre de bornes de contact sont prévues dans un même connecteur. Si au contraire les parties constituant contact sont initia­lement séparées, leur appui sur la lame de contact peut dans certains cas être insuffisant pour assurer une bonne liaison électrique.Contact terminals of the type defined above are already known, which can be manufactured by cutting, folding and possibly rolling a strip in a much more economical manner than the low-cut terminals. In return, the existing contacts made of cut and folded sheet metal have a certain number of drawbacks. If the parts constituting contact of the internal sides are initially in abutment against one another and oppose a high force to their spacing, which is favorable to the establishment of an electrical connection of good quality, the insertion force is important and there is a risk of incorrect introduction. The first drawback can become serious if a large number of contact terminals are provided in the same connector. If, on the contrary, the parts constituting the contact are initially separated, their support on the contact blade may in certain cases be insufficient to ensure a good electrical connection.

L'invention vise notamment à fournir une borne de contact qui tout à la fois garantit une liaison électrique satisfaisante et assure un guidage de la lame de contact mâle lors de son introduction. Dans ce but, chaque flanc externe présente à l'avant un rabat replié vers l'intérieur autour d'une arête transversale au flanc interne, retenant la partie avant du flanc interne en précontrainte de flexion dans une position où elle est hors de contact avec l'autre flanc interne.The invention aims in particular to provide a contact terminal which at the same time guarantees a satisfactory electrical connection and ensures guiding of the male contact blade during its introduction. For this purpose, each external flank has at the front a flap folded inwards around an edge transverse to the internal flank, retaining the front part of the internal flank. in bending preload in a position where it is out of contact with the other internal flank.

A condition de ne laisser subsister, entre les zones les plus rapprochées des parties avant, qu'une distance inférieure à l'épaisseur de la lame, on obtient une liaison électrique de bonne qualité. Le rabat, qui peut se terminer très près des zones les plus rappro­chées, assure le préguidage de la lame de contact lors de son introduction. La distance entre les contacts est constante quelle que soit la pression exercée. La présence d'un espace entre les zones de contact permet de déposer sur elles un revêtement électrolytique de protection. Du fait de la séparation initiale des zones de contacts, la force d'introduction de la lame de contact est réduite.Provided that only a distance less than the thickness of the blade remains between the areas closest to the front parts, a good quality electrical connection is obtained. The flap, which can end very close to the closest areas, ensures the pre-guiding of the contact blade during its introduction. The distance between the contacts is constant regardless of the pressure exerted. The presence of a space between the contact zones makes it possible to deposit an electrolytic protective coating on them. Due to the initial separation of the contact areas, the insertion force of the contact blade is reduced.

Beaucoup des bornes de contact en tôle pliée existant à ce jour présentent en outre l'inconvénient de s'écraser si par exemple un travailleur met le pied sur elles, même lorsqu'elles sont reliées à un fil. On a déjà tenté d'éviter cet écrasement en prolongeant l'un des flancs internes, à l'arrière, par un volet replié à 90° vers l'intérieur et s'appuyant contre l'autre flanc interne. L'invention vise également à fournir une borne de contact présentant une résistance améliorée à l'écrasement de sorte que le volet arrière, s'il est prévu, n'a pas besoin de venir en appui de butée contre le côté opposé, son rôle se bornant à éviter, lorsqu'on coule un produit d'étanchéité dans le connecteur, que ce dernier ne s'inflitre dans le corps de la borne et ne gêne ultérieurement la connexion électrique.Many of the folded sheet contact terminals existing to date also have the disadvantage of being crushed if, for example, a worker steps on them, even when they are connected to a wire. We have already tried to avoid this crushing by extending one of the internal sides, at the rear, by a flap folded 90 ° inward and pressing against the other internal side. The invention also aims to provide a contact terminal having improved resistance to crushing so that the rear flap, if provided, does not need to come into abutment abutment against the opposite side, its role merely to avoid, when a sealant is poured into the connector, that the latter does not infiltrate the body of the terminal and subsequently interfere with the electrical connection.

Dans ce but, les deux flancs de chaque côté sont pliés à angle droit dans leur zone d'appui l'un contre l'autre, de sorte que les plis à 180° se trouvent face à face et à proximité immédiate l'un de l'autre. Dans ces conditions, si un effort d'écrasement est exercé sur la borne, ces plis viennent s'appuyer l'un contre l'autre et opposent une résistance élevée à la déformation.For this purpose, the two flanks on each side are folded at right angles in their bearing zone against each other, so that the 180 ° folds are face to face and in close proximity to one of the other. Under these conditions, if a crushing force is exerted on the terminal, these folds come to bear against one another and offer high resistance to deformation.

L'invention sera mieux comprise à la lecture de la description qui suit d'un mode particulier de réali­sation de l'invention, donné à titre d'exemple non limitatif. La description se réfère aux dessins qui l'accompagnent, dans lesquels :

  • - la figure 1 est une vue en perspective avec une partie arrachée montrant une constitution possible d'une borne suivant l'invention ;
  • - la figure 2 est une vue en plan d'un flan destiné à être plié pour donner naissance à la borne de la figure 1 ;
  • - la figure 3 est une vue en élévation de la borne de la figure 1 ;
  • - les figures 4 et 5 sont respectivement des vues de dessus et de face de la borne de la figure 3 ;
  • - la figure 6 est une vue de détail en coupe, à grande échelle, montrant la constitution d'un des côtés de la borne;
  • - les figures 7 et 8 sont des vues en coupe suivant les lignes VII et VIII de la figure 6.
The invention will be better understood on reading the following description of a particular embodiment of the invention, given by way of non-limiting example. The description refers to the accompanying drawings, in which:
  • - Figure 1 is a perspective view with a part broken away showing a possible construction of a terminal according to the invention;
  • - Figure 2 is a plan view of a blank intended to be folded to give birth to the terminal of Figure 1;
  • - Figure 3 is an elevational view of the terminal of Figure 1;
  • - Figures 4 and 5 are respectively top and front views of the terminal of Figure 3;
  • - Figure 6 is a detailed sectional view, on a large scale, showing the constitution of one side of the terminal;
  • - Figures 7 and 8 are sectional views along lines VII and VIII of Figure 6.

La borne dont la constitution finale est montrée en figures 1 et 3 à 7, réalisée à partir d'un flanc du genre montré en figure 2, est destinée à être insérée dans un connecteur dont la constitution générale peut être classique. La borne 10 est d'une seule pièce. Elle peut être regardée comme ayant un corps avant destiné à recevoir une lame de contact mâle 12 et un fût arrière à sertir 14 dont une fraction seulement est montrée en figures 2 et 4. Ce fût comporte deux jeux de languettes 16 et 18, respectivement destinés à être serties sur l'âme et sur la gaine d'un fil électrique 20 (figure 3).The terminal whose final constitution is shown in Figures 1 and 3 to 7, made from a side of the kind shown in Figure 2, is intended to be inserted in a connector whose general constitution may be conventional. Terminal 10 is in one piece. It can be viewed as having a front body intended to receive a male contact blade 12 and a rear barrel to be crimped 14 of which only a fraction is shown in FIGS. 2 and 4. This barrel comprises two sets of tongues 16 and 18, respectively intended to be crimped on the core and on the sheath of an electric wire 20 (Figure 3).

Le corps de la borne 10 présente une forme de cage ayant un fond 22 et deux côtés 24. Chaque côté 24 est double. Il comprend un flanc externe 26 et un flanc interne 28. Chaque flanc externe 26 est réalisé par pliage à 90° du flan d'origine suivant l'une des lignes 30 indiquées en traits mixtes sur la figure 2. Le flanc interne 28 est relié au flanc externe 26 par un pli à 180° suivant l'arête indiquée en 32 sur la figure 2. L'ensemble des deux flancs 26 et 28 présente un pli à angle droit suivant les lignes désignées par 34 sur la figure 2.The body of the terminal 10 has a cage shape having a bottom 22 and two sides 24. Each side 24 is double. It comprises an external flank 26 and an internal flank 28. Each external flank 26 is produced by 90 ° folding of the original blank along one of the lines 30 indicated in phantom in Figure 2. The internal flank 28 is connected to the external flank 26 by a 180 ° fold along the edge indicated at 32 on the FIG. 2. The assembly of the two sides 26 and 28 has a fold at right angles along the lines designated by 34 in FIG. 2.

Le flan d'origine présente des échancrures 36 telles que chaque flanc interne 28 n'est raccordé au flanc externe correspondant 26 que dans sa partie ar­rière. La partie avant de chaque flanc interne constitue ainsi un contact élastique d'appui sur la lame 12.The original blank has notches 36 such that each internal flank 28 is connected to the corresponding external flank 26 only in its rear part. The front part of each internal flank thus constitutes an elastic contact for bearing on the blade 12.

Dans le mode de réalisation représenté, chaque flanc interne 28 est fractionné par une fente 38 sur une partie de sa longueur à partir de l'extrémité libre, ce qui permet un appui plus régulier. Ce fractionnement n'est cependant pas indispensable. L'un des contacts (ou les deux) pourrait être dépourvu de fente 38. Inverse­ment, il serait possible de prévoir plus d'une fente dans chaque contact.In the embodiment shown, each internal flank 28 is divided by a slot 38 over a part of its length from the free end, which allows more regular support. However, this splitting is not essential. One or both of the contacts could have no slot 38. Conversely, it would be possible to provide more than one slot in each contact.

La partie des flancs 26 et 28 proche du pli à 180° constitue un plafond de cage. Dans le mode de réalisation représenté, la découpe du flan d'origine laisse subsister des languettes 40 en appui de butée l'une contre l'autre et constituant un plafond continu dans la zone en porte à faux des flancs internes 28, alors que les plis à 180° restent séparés par une brèche 42. Cette solution peut être intéressante lorsque la borne est destinée à être placée dans un connecteur où l'étanchéité est assurée par pénétration de l'isolant du connecteur à l'intérieur de la borne. Lorsqu'au contraire on recherche une résistance maximale de la borne à l'écrasement la découpe peut être telle que les plis à 180° soient en contact l'un avec l'autre comme cela est indiqué en tirets sur la figure 8. Cette dernière solution limite les risques d'accrochage de bornes entre elles lorsqu'elles sont groupées en botte ou en vrac et assure une protection complète des contacts.The part of the sides 26 and 28 close to the 180 ° fold constitutes a cage ceiling. In the embodiment shown, the cutting of the original blank leaves tabs 40 bearing abutment against one another and constituting a continuous ceiling in the cantilevered area of the internal flanks 28, while the 180 ° folds remain separated by a gap 42. This solution may be advantageous when the terminal is intended to be placed in a connector where the seal is ensured by penetration of the connector insulator inside the terminal. When, on the contrary, a maximum resistance of the terminal to crushing is sought, the cutout may be such that the folds at 180 ° are in contact with each other as indicated in dashes in FIG. 8. The latter solution limits the risk of snagging terminals between them when grouped in bundles or in bulk and ensures complete protection of the contacts.

L'un des flancs internes 28 est prolongé à l'arrière par un volet 44 replié à 90° (figures 2 et 6) et venant s'appuyer contre l'autre flan interne. Le rôle de ce volet est essentiellement d'éviter l'infiltration du produit de surmoulage utilisé pour assurer l'étanchéité arrière d'un connecteur dans lequel est placée la borne. Cependant ce volet peut également participer à la résistance à l'écrasement.One of the internal sides 28 is extended at the rear by a flap 44 folded at 90 ° (Figures 2 and 6) and coming to bear against the other internal side. The role of this component is essentially to avoid the infiltration of the overmolding product used to seal the rear of a connector in which the terminal is placed. However, this component can also participate in resistance to crushing.

Chaque flanc interne 28 a avantageusement une forme du genre montré en figure 6. La partie en porte à faux, formant contact électrique, représente un peu plus de la moitié de la longueur totale du flanc 28 et elle est mise en forme de façon à présenter une cambrure vers l'intérieur et un coude épaissi dirigé vers l'autre flanc, à proximité immédiate de l'extrémité libre. La force élastique due au cambrage du contact et tendant à rapprocher deux contacts l'un contre l'autre, est absor­bée par un rabat 46 du flanc externe 26 correspondant, replié vers l'arrière. On voit sur la figure 1 que le pli des rabats se trouve en avant des arêtes terminales du fond et du plafond de la cage et est de forme arron­die, ce qui facilite l'introduction de la borne dans un isolant et limite les risques de détérioration de ce dernier. Pour réduire encore le risque lors de l'introduction, les arêtes du fond et du plafond peuvent être adoucies.Each internal flank 28 advantageously has a shape of the kind shown in FIG. 6. The cantilever part, forming electrical contact, represents a little more than half of the total length of the flank 28 and it is shaped so as to present an inward camber and a thickened elbow directed towards the other flank, in the immediate vicinity of the free end. The elastic force due to the bending of the contact and tending to bring two contacts close together, is absorbed by a flap 46 of the corresponding external flank 26, folded back. We see in Figure 1 that the fold of the flaps is in front of the end edges of the bottom and the ceiling of the cage and is rounded, which facilitates the introduction of the terminal in an insulator and limits the risk of deterioration of the last. To further reduce the risk during insertion, the edges of the bottom and ceiling can be softened.

De même, les coins formés par les côtés et le plafond à l'arrière du corps peuvent être cassés lors de la fabrication.Likewise, the corners formed by the sides and the ceiling at the back of the body can be broken during manufacture.

Pour augmenter le débattement des contacts, les flancs externes 26 peuvent présenter des cavités 48 de faible profondeur (par exemple représentant 20 % de l'épaisseur du flanc) en face de l'emplanture de chaque contact d'un flan interne 28 et en face de la partie terminale retenue par le rabat 46.To increase the travel of the contacts, the external flanks 26 may have cavities 48 of shallow depth (for example representing 20% of the thickness of the flank) opposite the root of each contact of an internal blank 28 and opposite the end part retained by the flap 46.

Dans les flancs externes 26 sont ménagées des fenêtres 50 destinées à permettre l'immobilisation de la borne dans un isolant à l'aide d'un doigt de verrouil­lage 52 qui peut avoir l'une quelconque des consti­tutions utilisées à l'heure actuelle. Dans le mode de réalisation montré en figure 6, ce doigt est constitué par une languette allongée 52 ménagée lors du moulage de l'isolant, présentant un ergot dirigé vers l'intérieur et pouvant s'engager dans la fenêtre 50. Du fait que la languette se prolonge en avant de l'ergot, il est possi­ble de déverrouiller le connecteur en enfonçant un tube à travers le passage avant 54 de l'isolant (délimité par une lèvre annulaire présentant une brèche permettant le montage de la languette 52), ce tube venant se glisser entre le côté de la borne et la languette. Du fait de l'emplacement symétrique des deux fenêtres 50, la borne peut occuper l'une ou l'autre de deux positions symétri­ques dans l'alvéole de l'isolant.In the outer sides 26 are provided windows 50 intended to allow the immobilization of the terminal in an insulator using a locking finger 52 which may have any of the constitutions used at present. In the embodiment shown in FIG. 6, this finger is constituted by an elongated tongue 52 formed during the molding of the insulation, having a lug directed inwards and capable of engaging in the window 50. Because the tongue extends in front of the lug, it is possible to unlock the connector by pushing a tube through the front passage 54 of the insulation (delimited by an annular lip having a gap allowing the mounting of the tongue 52), this tube slipping between the side of the terminal and the tab. Due to the symmetrical location of the two windows 50, the terminal can occupy one or the other of two symmetrical positions in the cell of the insulation.

On donnera maintenant un description succincte d'un procédé possible de fabrication de bornes suivant l'invention, permettant d'obtenir les bornes en bandes d'alimentation d'une machine de sertissage automatique sur des fils.We will now give a brief description of a possible method of manufacturing terminals according to the invention, making it possible to obtain the terminals in supply strips of an automatic crimping machine on wires.

Dans le cas de bornes destinées au passage des courants habituels dans le domaine automobile, la fabrication s'effectue généralement par découpage et pliage de feuillards d'alliage cuivreux ayant une épaisseur de 0,3 à 0,4 mm. A un premier poste de tra­vail, le feuillard est découpé pour donner naissance à des flans successifs du genre montré en figure 2, raccordés entre eux par une bande de liaison 56. Les lignes de pliage, indiquées en traits mixtes sur la figure 2, peuvent être marquées à la presse. Les con­tacts sont mis en forme par cambrage et frappe destinée à former le renflement épaissi vers l'extérieur consti­tuant zone d'appui et les rabats 46 sont formés. Comme le montre la figure 6, il est avantageux de réduire l'épaisseur des contacts dans la partie terminale libre et de donner à l'ensemble, constitué par les rabats et cette partie terminale libre des contacts, une pente, par exemple d'environ 15°, qui facilite l'introduction de la lame de contact mâle. Les évidements 48 peuvent eux aussi être constitués par frappe, avant mise en forme des contacts et repliement du flan.In the case of terminals intended for the passage of the usual currents in the automotive field, the manufacture is generally carried out by cutting and folding strips of copper alloy having a thickness of 0.3 to 0.4 mm. At a first work station, the strip is cut to give rise to successive blanks of the kind shown in FIG. 2, connected together by a connecting strip 56. The fold lines, indicated by dashed lines in FIG. 2, can be marked with the press. The contacts are shaped by bending and striking intended forming the thickened outward bulge constituting the support zone and the flaps 46 are formed. As shown in FIG. 6, it is advantageous to reduce the thickness of the contacts in the free end part and to give the assembly, constituted by the flaps and this free end part of the contacts, a slope, for example of approximately 15 °, which facilitates the introduction of the male contact blade. The recesses 48 can also be formed by striking, before forming the contacts and folding the blank.

Le pli à 180° entre les flancs internes et externes et le pli à 90° vers l'intérieur séparant la partie du flanc interne appartenant au côté et celle appartenant au plafonds sont formés. Puis le volet 44 et replié vers l'intérieur et la cage est refermée par repliement suivant les lignes 34 les plus proches de l'axe du flan.The 180 ° fold between the internal and external sides and the 90 ° inward fold separating the part of the internal side belonging to the side and that belonging to the ceilings are formed. Then the flap 44 and folded inward and the cage is closed by folding along the lines 34 closest to the axis of the blank.

L'invention ne se limite pas aux modes particu­liers de réalisation qui ont été représentés et décrits à titre d'exemples. Elle est susceptible de nombreuses variantes. Par exemple, il est possible de constituer une borne dont les faces ne sont pas exactement paral­lèles mais présentent une pente ; une échancrure (en traits mixtes sur la figure 4) permettant le passage de la lame mâle en biais, ce qui est requis pour certains modes de réalisation d'étanchéité, destinée à recevoir une languette d'étanchéité peut être ménagée à l'avant du plafond du contact.The invention is not limited to the particular embodiments which have been shown and described by way of examples. It is susceptible to numerous variations. For example, it is possible to form a terminal whose faces are not exactly parallel but have a slope; a notch (in phantom in Figure 4) allowing the passage of the male blade at an angle, which is required for certain sealing embodiments, intended to receive a sealing tongue can be provided at the front of the contact ceiling.

Claims (7)

1. Borne de contact électrique d'une seule pièce, comprenant un corps avant en forme de cage ayant un fond attenant à deux côtés (24) ayant chacun un flanc interne (28) raccordé latéralement à un flanc externe (26) par un pli à 180° et présentant à l'avant une partie en porte à faux constituant contact, caractérisée en ce que chaque flanc externe (26) présente à l'avant un rabat (46) replié vers l'intérieur autour d'une arête transversale au flanc interne, retenant la partie avant du flanc interne (28) en précontrainte de flexion dans une position où elle est hors de contact avec l'autre flanc interne.1. One-piece electrical contact terminal, comprising a cage-shaped front body having a bottom adjoining two sides (24) each having an internal flank (28) connected laterally to an external flank (26) by a fold at 180 ° and having a cantilevered part constituting a contact at the front, characterized in that each external flank (26) has at the front a flap (46) folded inwards around an edge transverse to the internal flank, retaining the front part of the internal flank (28) in bending preload in a position where it is out of contact with the other internal flank. 2. Borne selon la revendication 1, caractérisée en ce que les deux flancs (26, 28) de chaque côté sont pliés à angle droit dans leur zone d'appui l'un contre l'autre, de sorte que les plis à 180° se trouvent face à face et à proximité immédiate l'un de l'autre en consti­tuant un plafond fermant la cage.2. Terminal according to claim 1, characterized in that the two flanks (26, 28) on each side are folded at right angles in their bearing zone against one another, so that the folds at 180 ° are face to face and in close proximity to each other by forming a ceiling closing the cage. 3. Borne selon la revendication 2, caractérisée en ce que les plis sont en appui l'un contre l'autre.3. Terminal according to claim 2, characterized in that the folds are in abutment against one another. 4. Borne selon la revendication 1, 2 ou 3, ca­ractérisée en ce que le pli des rabats (46) est décalé vers l'avant par rapport aux arêtes terminales avant du corps.4. Terminal according to claim 1, 2 or 3, characterized in that the fold of the flaps (46) is offset forward relative to the front end edges of the body. 5. Borne selon l'une quelconque des revendica­tions précédentes, caractérisée en ce que chaque rabat (46) et la partie terminale avant du flanc interne cor­respondant (28) présentent une pente vers l'intérieur.5. Terminal according to any one of the preceding claims, characterized in that each flap (46) and the front end part of the corresponding internal flank (28) have an inward slope. 6. Borne selon l'une quelconque des revendica­tions précédentes, caractérisée en ce que l'un des flancs internes (28) est prolongé vers l'arrière par un volet (44) replié à 90° vers l'intérieur et prenant appui sur l'autre volet interne (28).6. Terminal according to any one of the preceding claims, characterized in that one of the internal sides (28) is extended towards the rear by a flap (44) folded 90 ° inwards and bearing on the 'other internal component (28). 7. Borne selon l'une quelconque des revendica­tions précédentes, caractérisée en ce qu'une fenêtre (50) est ménagée dans chacun des flancs externes (26) pour recevoir un doigt de verrouillage.7. Terminal according to any one of the preceding claims, characterized in that a window (50) is provided in each of the external sides (26) to receive a locking finger.
EP88402421A 1987-09-28 1988-09-26 Cage-type electrical contact terminal Expired - Lifetime EP0310487B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8713374A FR2621180B1 (en) 1987-09-28 1987-09-28 CAGE TYPE ELECTRIC CONTACT TERMINAL
FR8713374 1987-09-28

Publications (2)

Publication Number Publication Date
EP0310487A1 true EP0310487A1 (en) 1989-04-05
EP0310487B1 EP0310487B1 (en) 1992-12-16

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ID=9355282

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EP88402421A Expired - Lifetime EP0310487B1 (en) 1987-09-28 1988-09-26 Cage-type electrical contact terminal

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US (1) US4834681A (en)
EP (1) EP0310487B1 (en)
JP (2) JPS6451273U (en)
DE (1) DE3876739T2 (en)
ES (1) ES2035938T3 (en)
FR (1) FR2621180B1 (en)

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EP0492479A2 (en) * 1990-12-28 1992-07-01 The Whitaker Corporation Receptacle for a connector
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FR2678779A1 (en) * 1991-07-04 1993-01-08 Francelco Sa Plug-in electrical terminal (connection) block with locking of the contact terminals
GB2264007A (en) * 1992-01-28 1993-08-11 Mecanismos Aux Ind Socket contact terminal
FR2703520A1 (en) * 1993-04-02 1994-10-07 Francelco Sa Electrical connector module and method of fitting such a module
FR2721758A1 (en) * 1994-06-22 1995-12-29 Framatome Connectors Int Female connector for flat pin
EP0687033A3 (en) * 1994-06-06 1996-01-10 Whitaker Corp
FR2725839A1 (en) * 1994-10-13 1996-04-19 Framatome Connectors Int Low voltage electrical contact for use in motor vehicle wiring connection
WO1996012324A1 (en) * 1994-10-13 1996-04-25 Framatome Connectors International Electrical contact terminal comprising prestressed terminal blades
EP0697752A3 (en) * 1994-08-19 1996-05-29 Whitaker Corp Electrical receptacle terminal
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Cited By (30)

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Publication number Priority date Publication date Assignee Title
FR2647602A1 (en) * 1989-05-25 1990-11-30 Amp France Female contact
FR2651382A1 (en) * 1989-08-31 1991-03-01 Francelco Sa Plug-in electrical connection block, with locking
WO1992004746A1 (en) * 1990-09-12 1992-03-19 Thomas & Betts, France Female connector with double-strip contacts
EP0477759A1 (en) * 1990-09-18 1992-04-01 Hirose Electric Co., Ltd. Electrical connector for diversity antennas
US5415571A (en) * 1990-12-28 1995-05-16 The Whitaker Corporation Receptacle for a connector
EP0492479A2 (en) * 1990-12-28 1992-07-01 The Whitaker Corporation Receptacle for a connector
EP0492479A3 (en) * 1990-12-28 1993-04-14 Amp Incorporated Receptacle for a connector
FR2678780A1 (en) * 1991-07-04 1993-01-08 Francelco Sa Electrical contact terminal and terminal (connection) block comprising an application thereof
FR2678779A1 (en) * 1991-07-04 1993-01-08 Francelco Sa Plug-in electrical terminal (connection) block with locking of the contact terminals
GB2264007A (en) * 1992-01-28 1993-08-11 Mecanismos Aux Ind Socket contact terminal
EP0635902A1 (en) * 1993-04-02 1995-01-25 Framatome Connectors International Terminal and electrical connector module
FR2703520A1 (en) * 1993-04-02 1994-10-07 Francelco Sa Electrical connector module and method of fitting such a module
EP0687033A3 (en) * 1994-06-06 1996-01-10 Whitaker Corp
US5624289A (en) * 1994-06-06 1997-04-29 The Whitaker Corporation High current receptacle terminal
EP0688065A3 (en) * 1994-06-13 1998-10-21 The Whitaker Corporation Electrical receptacle terminal
FR2721758A1 (en) * 1994-06-22 1995-12-29 Framatome Connectors Int Female connector for flat pin
EP0697752A3 (en) * 1994-08-19 1996-05-29 Whitaker Corp Electrical receptacle terminal
US5645458A (en) * 1994-08-19 1997-07-08 The Whitaker Corporation Electrical receptacle terminal
EP0700122A3 (en) * 1994-09-02 1999-03-03 The Whitaker Corporation Electrical receptacle terminal
FR2725839A1 (en) * 1994-10-13 1996-04-19 Framatome Connectors Int Low voltage electrical contact for use in motor vehicle wiring connection
WO1996012324A1 (en) * 1994-10-13 1996-04-25 Framatome Connectors International Electrical contact terminal comprising prestressed terminal blades
ES2114467A1 (en) * 1994-12-01 1998-05-16 Bosch Gmbh Robert Electric pluggable connector with contact elements and support e.g. for application with IC engine
EP0812037A1 (en) * 1996-06-03 1997-12-10 Framatome Connectors International Electrical contact socket of a reinforced cage type
FR2749440A1 (en) * 1996-06-03 1997-12-05 Framatome Connectors Int REINFORCED CAGE TYPE FEMALE ELECTRIC CONTACT TERMINAL
US5836793A (en) * 1996-06-03 1998-11-17 Framatome Connectors International Female electrical contact terminal of the reinforced-cage type
FR2754397A1 (en) * 1996-10-08 1998-04-10 Framatome Connectors Int Sprung female connector from single folded metal sheet for male strip
FR2769413A1 (en) * 1997-10-03 1999-04-09 Proner Comatel Sa Electrical contact connection construction method
EP0911908A1 (en) * 1997-10-03 1999-04-28 Proner Comatel Female electrical terminal
US7059921B2 (en) 2001-06-29 2006-06-13 Fci Female electrical contact
US7223134B2 (en) 2001-06-29 2007-05-29 Fci Female electric contact

Also Published As

Publication number Publication date
JP2675698B2 (en) 1997-11-12
FR2621180B1 (en) 1990-01-12
DE3876739T2 (en) 1993-04-22
DE3876739D1 (en) 1993-01-28
US4834681A (en) 1989-05-30
JPH05307983A (en) 1993-11-19
FR2621180A1 (en) 1989-03-31
JPS6451273U (en) 1989-03-29
ES2035938T3 (en) 1993-05-01
EP0310487B1 (en) 1992-12-16

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