EP0786159A1 - Electrical contact terminal comprising prestressed terminal blades - Google Patents

Electrical contact terminal comprising prestressed terminal blades

Info

Publication number
EP0786159A1
EP0786159A1 EP95934199A EP95934199A EP0786159A1 EP 0786159 A1 EP0786159 A1 EP 0786159A1 EP 95934199 A EP95934199 A EP 95934199A EP 95934199 A EP95934199 A EP 95934199A EP 0786159 A1 EP0786159 A1 EP 0786159A1
Authority
EP
European Patent Office
Prior art keywords
terminal according
wings
sides
terminal
ceiling
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
EP95934199A
Other languages
German (de)
French (fr)
Other versions
EP0786159B1 (en
Inventor
Hervé CHAMPEAU
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FCI SA
Original Assignee
Framatome Connectors International SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from FR9412231A external-priority patent/FR2725839A1/en
Priority claimed from FR9412230A external-priority patent/FR2725835A1/en
Application filed by Framatome Connectors International SAS filed Critical Framatome Connectors International SAS
Publication of EP0786159A1 publication Critical patent/EP0786159A1/en
Application granted granted Critical
Publication of EP0786159B1 publication Critical patent/EP0786159B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/113—Resilient sockets co-operating with pins or blades having a rectangular transverse section
    • 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

Definitions

  • the present invention relates to electrical contact terminals intended to receive male contact blades. It finds an important application in electrical connection modules intended to receive a layer of wires, of the kind used in particular in the automotive field.
  • the invention relates more particularly to electrical contact terminals of a single piece of folded sheet metal, of the type having a plug-in front part constituting a cage formed from a bottom, from two sides cut out to each form an elastic contact contact blade. with forward overhang and a front flap for retaining the respective blade in pre-stress, and from a ceiling, and having a rear part for connection to a wire which may have folding crimping tabs on the insulation of the wire.
  • the wall of the cage is double-walled on three sides, which has the advantage of giving the cage great rigidity, but in counterpart increases its size in all directions.
  • it is sought to reduce the distribution pitch of the contact terminals in the connectors, which requires reducing as much as possible the transverse dimension of the terminal in the direction of alignment of the terminals.
  • the present invention aims in particular to provide an electrical contact terminal of the kind defined above having small transverse dimensions, and constituting a satisfactory compromise between the requirements of space and rigidity.
  • the invention notably proposes a contact terminal of the type defined above, characterized in that the strip belonging to the ceiling is constituted by a rear extension of the ceiling folded in 180 ° inwards and forwards. and in that the bottom and the sides are simple wall.
  • the size of the terminal in the direction parallel to the bottom and the ceiling can be reduced. Because the cage structure is preserved, the rigidity is still high. It is further increased due to the local doubling of the thickness of the ceiling.
  • the flat blank intended to make the terminal is advantageously cut so that the coming into contact of the two lateral edges of the blank in the front part is effected in one side.
  • a lower part on one side is attached to an edge of the bottom by a 90 ° fold while the other side, the ceiling and the upper part of the first side are connected at the other edge of the bottom by a 90 ° fold parallel to the first.
  • the upper part may in particular terminate towards the rear substantially in the transverse extension of the 180 ° fold of connection of the corresponding contact blade and the terminal edge of the upper part bears against the edge of a widening. of the lower part.
  • the contact terminal according to the invention advantageously comprises a self-stripping or insulating displacement rear part, intended to make an electrical connection with the wires of a conductor ply or of a flat cable.
  • the present invention also aims to provide an electrical contact terminal of the type defined above having small transverse dimensions, and having means for moving insulation which reinforce the terminal and present a risk of spreading less than those previously known. .
  • the invention proposes a terminal, the insulation displacement means of which comprise: on the one hand, two wings formed by folding towards each other end portions on two sides extending two sides of the cage, said wings defining a slit parallel to the sides, on the other hand a fork placed in front of the wings, parallel to these wings and formed by folding at 90 ° from a rear extension of a floor of the cage around a transverse line.
  • each branch of the fork may have at its end a transverse spout directed towards the outside, embedded in a notch on the respective side.
  • the wings are folded not only towards one another, but also slightly towards the front. Folding at an angle of approximately 120 ° will generally give satisfactory results. However, it is still possible to perform a simple 90 ° folding.
  • Such insulation displacement means can be used in terminals having a constitution of the front part different from that mentioned above.
  • FIG. 1 is an elevational view of a terminal according to a particular embodiment of the invention.
  • Figure 2 is a perspective view from the front of Figure 1;
  • - Figure 3 is a top view of the terminal of Figure 1;
  • - Figure 4 is a sectional view along line IV-IV of Figure 3;
  • - Figure 5 is a curved view along the line VV of Figure 4;
  • FIG. 6 is a perspective view from above showing a possible constitution of the rear part of the terminal.
  • FIG. 7 is a developed view of a cut blank intended to constitute the terminal.
  • the electrical contact terminal 10 shown in FIGS. 1 to 6 can be viewed as having a front part intended to receive a male contact blade 12 and a rear part constituting a barrel to be crimped.
  • the front part of the terminal 10 has a cage shape having a bottom 22, two sides 24a and 24b and a ceiling 26.
  • the entire side 24b is formed by folding a blank at 90 °. original, around one of the longitudinal edges of the bottom 22.
  • the ceiling 26 is connected to the side 24b by another fold at 90 °.
  • the other side 24a is not made up entirely by 90 ° replie ⁇ ment of the original blank around the other edge of the bottom 22.
  • the blank has a rectangular notch showing an edge 28. This notch is filled by a fraction of the original blank located on the other side of the bottom 22, folded at 90 ° around the edge of the ceiling 26.
  • the contact line 30 between the two fractions on the side 24a will be approximately in the midplane on this side.
  • the bottom 22 is cut so as to constitute a first elastic contact blade 32 intended to bear on the male contact blade 12 when the latter is inserted.
  • a prolongation of the back folded back constitutes a flap 34 for holding the blade 32 in preload.
  • a second electrical contact blade 36 disposed opposite the blade 32, is integral with the ceiling 26. It is formed from a rear extension of the blank which is folded 180 ° and curved. The rear part of the blade 36 thus formed bears against the ceiling. Its front part has substantially the same shape as that of the blade 32 and it, too, is retained in preload by a flap 34.
  • a window 37 can be cut in the ceiling 26 and overflow on the sides to receive a locking finger.
  • the edge 28 is advantageously substantially in the same transverse plane as the extension foot which will give rise to the elastic terminal 36, and therefore that the fold at 180 °.
  • the rear part of the contact terminal has two tabs or tongues 16 which, before mounting a wire, are in the extension of the sides 24a and 24b. They are intended to be crimped or shrunk onto the insulation of a conductor, which may belong to a ribbon cable.
  • the rear part of the terminal shown by way of example also comprises, in front of the tabs 16, means for moving insulation into two locations staggered along the terminal.
  • These means comprise two wings 38 extending the sides 24a and 24b, formed by cutting the blank and by refolding at 90 ° around lines orthogonal to the bottom, oriented perpendicular to the direction of elongation of the contact and delimiting a slot of width adapted to that of the wire.
  • the edges opposite the wings can be parallel over their entire length or give the slot a convergent entry.
  • the notches in the blank which separate them from the bottom 22 can project these wings forward.
  • the insulation displacement means of the terminal shown also include a fork 40 placed in front of the wings 38 and parallel to these wings.
  • This fork is made up of killed by a fraction which is cut in the part of the blank which gives rise to the floor and which is folded at 90 ° around a transverse line 42. This fraction can have a width such that it is supported on the sides when the terminal is finished.
  • the fork can be extended at its upper end by transverse beaks 44 directed outwards.
  • these nozzles are embedded in notches 46 formed in the upper edge of the sides 24a and 24b. The embedding thus produced makes it possible to retain the fork 40 in its nominal position even when it is subjected to the pressure of the insulator of a wire which is pressed in the direction of the arrow f in FIG. 6.
  • the bottom and the sides can be deformed by punching into several locations 48, as indicated in FIGS. 1 and 3.
  • a blank of the kind shown in FIG. 7 is first cut out, where the portions which then give rise to elements of the complete terminal are designated by the same number of reference. It can be seen in this figure that no narrow slit is to be made between fractions which are, on the complete terminal, separated by a fold. Cutting is relatively simple and can be performed even in very thin sheet metal.
  • the successive folds to be carried out appear from the constitution of the terminal and can be carried out on a transfer line. So that the connection between the spouts 44 and the sides 24a and 24b can be likened to embedding, the notches 46 are advantageously given a width slightly less than the thickness of the strip which constitutes the terminal and at least one of the edges of the edges is slightly deformed notches, as shown in Figure 6, before folding the sides.
  • the folding tool exerts efforts in the direction of the arrows fl to pinch the lugs 44.
  • the invention has made it possible to produce terminals intended to receive male tabs having a section of 0.63 x 0.63 mm, which can be distributed in steps of 2.50 mm (a tenth of an inch). A 0.15 mm strip construction is possible.
  • the contact terminal can be used in connector modules of known constitution, for example of the type described in French patent application No. 93 03910 (publication No. 2 703 520).
  • the invention is susceptible of numerous variant embodiments.
  • the rear part of the terminal can have a different constitution from that which has been described is shown in FIG. 6.
  • the terminal can also be used on a discrete wire.
  • the front part of the terminal may have a constitution different from that which has been described, for example that described in document EP-A-0310487.

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Discharge Heating (AREA)
  • Cable Accessories (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

The electrical contact element is a single piece made of folded sheet metal. The front plug-in part consists of a frame with a base (22), two cut-out sides (24a, 24b) each forming a spring blade (32, 36) in a cantilevered configuration toward the front, a front flap (34) for maintaining the respective spring blade in a prestressed state, an upper part (26), a rear part for connection to a lead, including foldable lugs (16) for crimping onto the insulating covering of a lead. The blade (36) in the region of the upper part is formed from a rear extension thereof folded inwards and frontwards at 180 DEG C. The base (22) and the sides (24a, 24b) are single-walled.

Description

BORNE ELECTRIQUE A LAMES DE CONTACT PRECONTRAINTES ELECTRICAL TERMINAL WITH PRESTRESSED CONTACT BLADES
La présente invention concerne les bornes de contact électrique destinées à recevoir des lames de contact mâles. Elle trouve une application importante dans les modules de connexion électrique destinés à recevoir une nappe de fils, du genre de ceux utilisés notamment dans le domaine automo¬ bile.The present invention relates to electrical contact terminals intended to receive male contact blades. It finds an important application in electrical connection modules intended to receive a layer of wires, of the kind used in particular in the automotive field.
L'invention concerne plus particulièrement les bornes de contact électrique d'une seule pièce en tôle pliée, du type ayant une partie avant enfichable constituant une cage formée d'un fond, de deux côtés découpés pour former chacun une lame élastique de contact en porte à faux vers l'avant et un rabat avant de retenue de la lame respective en pré-contrainte, et d'un plafond, et ayant une partie arrière de connexion à un fil qui peut avoir des pattes rabattables de sertissage sur l'isolant du fil.The invention relates more particularly to electrical contact terminals of a single piece of folded sheet metal, of the type having a plug-in front part constituting a cage formed from a bottom, from two sides cut out to each form an elastic contact contact blade. with forward overhang and a front flap for retaining the respective blade in pre-stress, and from a ceiling, and having a rear part for connection to a wire which may have folding crimping tabs on the insulation of the wire.
Dans une telle borne suivant l'art antérieur, décrite dans le document EP-A-0310487 , la paroi de la cage est à double paroi sur trois côtés, ce qui a l'avantage de donner à la cage une grande rigidité, mais en contrepartie augmente son encombrement dans toutes les directions. Or, on cherche à réduire le pas de répartition des bornes de contact dans les connecteurs, ce qui exige de réduire le plus possible la dimension transversale de la borne dans le sens d'alignement des bornes.In such a terminal according to the prior art, described in document EP-A-0310487, the wall of the cage is double-walled on three sides, which has the advantage of giving the cage great rigidity, but in counterpart increases its size in all directions. However, it is sought to reduce the distribution pitch of the contact terminals in the connectors, which requires reducing as much as possible the transverse dimension of the terminal in the direction of alignment of the terminals.
La présente invention vise notamment à fournir une borne de contact électrique du genre ci-dessus défini ayant de faibles dimensions transversales, et constituant un compromis satisfaisant entre les exigences d'encombrement et de rigidité.The present invention aims in particular to provide an electrical contact terminal of the kind defined above having small transverse dimensions, and constituting a satisfactory compromise between the requirements of space and rigidity.
Dans ce but l'invention propose notamment une borne de contact du type ci-dessus défini caractérisée en ce que la lame appartenant au plafond est constituée par un prolonge¬ ment arrière du plafond replié à 180° vers l'intérieur et vers l'avant et en ce que le fond et les côtés sont à simple paroi .To this end, the invention notably proposes a contact terminal of the type defined above, characterized in that the strip belonging to the ceiling is constituted by a rear extension of the ceiling folded in 180 ° inwards and forwards. and in that the bottom and the sides are simple wall.
Grâce à cette constitution, l'encombrement de la borne dans la direction parallèle au fond et au plafond peut être réduite. Du fait que la constitution en cage est conservée, la rigidité est encore élevée. Elle est encore accrue du fait du doublement local de l'épaisseur du plafond.Thanks to this constitution, the size of the terminal in the direction parallel to the bottom and the ceiling can be reduced. Because the cage structure is preserved, the rigidity is still high. It is further increased due to the local doubling of the thickness of the ceiling.
Pour améliorer la rigidité et faciliter la fabrication, le flan plat destiné à réaliser la borne est avantageusement découpé de façon que la venue en contact des deux arrêtes latérales du flan dans la partie avant s'effectue dans un côté. Plus précisément, dans un mode avantageux de réalisa¬ tion, une partie inférieure d'un côté est rattachée à un bord du fond par un pli à 90° tandis que l'autre côté, le plafond et la partie supérieure du premier côté se raccordent à l'autre bord du fond par un pli à 90° parallèle au premier. La partie supérieure peut notamment se terminer vers l'arrière sensiblement dans le prolongement transversal du pli à 180° de raccordement de la lame de contact correspon¬ dante et l'arête terminale de la partie supérieure prend appui contre l'arête d'un élargissement de la partie infé¬ rieure.To improve rigidity and facilitate manufacturing, the flat blank intended to make the terminal is advantageously cut so that the coming into contact of the two lateral edges of the blank in the front part is effected in one side. More precisely, in an advantageous embodiment, a lower part on one side is attached to an edge of the bottom by a 90 ° fold while the other side, the ceiling and the upper part of the first side are connected at the other edge of the bottom by a 90 ° fold parallel to the first. The upper part may in particular terminate towards the rear substantially in the transverse extension of the 180 ° fold of connection of the corresponding contact blade and the terminal edge of the upper part bears against the edge of a widening. of the lower part.
La borne de contact selon l'invention comporte avanta¬ geusement une partie arrière auto-dénudante ou à déplacement d'isolant, destinée à réaliser une liaison électrique avec les fils d'une nappe de conducteur ou d'un câble plat.The contact terminal according to the invention advantageously comprises a self-stripping or insulating displacement rear part, intended to make an electrical connection with the wires of a conductor ply or of a flat cable.
La présente invention vise également à fournir une borne de contact électrique du type ci-dessus défini ayant de faibles dimensions transversales, et ayant des moyens de déplacement d'isolant qui renforcent la borne et présentent un risque d'écarte ent moindre que ceux antérieurement connus.The present invention also aims to provide an electrical contact terminal of the type defined above having small transverse dimensions, and having means for moving insulation which reinforce the terminal and present a risk of spreading less than those previously known. .
Dans ce but 1 ' invention propose une borne dont les moyens de déplacement d'isolant comprennent : d'une part, deux ailes formées par repliement l'une vers l'autre de parties terminales de deux côtés prolongeant deux côtés de la cage, lesdites ailes délimitant une fente parallèle aux côtés, d'autre part une fourche placée en avant des ailes, parallèle à ces ailes et formée par repliement à 90° d'un prolongement arrière d'un plancher de la cage autour d'une ligne transversale.For this purpose, the invention proposes a terminal, the insulation displacement means of which comprise: on the one hand, two wings formed by folding towards each other end portions on two sides extending two sides of the cage, said wings defining a slit parallel to the sides, on the other hand a fork placed in front of the wings, parallel to these wings and formed by folding at 90 ° from a rear extension of a floor of the cage around a transverse line.
Du fait de la constitution de la fourche, les branches de ces dernières résistent à 1 ' écarte ent davantage que des ailes appartenant à deux flancs opposés. Le contact avec la partie conductrice du fil s'effectue sur une surface accrue. Pour accroître encore la résistance mécanique de la partie arrière, chaque branche de la fourche peut présenter à son extrémité un bec transversal dirigé vers l'extérieur, encastré dans une encoche du côté respectif.Due to the constitution of the fork, the branches of the latter resist spread apart more than wings belonging to two opposite flanks. The contact with the conductive part of the wire takes place on an increased surface. To further increase the mechanical strength of the rear part, each branch of the fork may have at its end a transverse spout directed towards the outside, embedded in a notch on the respective side.
Dans un mode avantageux de réalisation, permettant d'augmenter l'effort de rétention du fil, les ailes sont repliées non seulement l'une vers l'autre, mais aussi légèrement vers l'avant. Un repliement d'un angle de 120° environ donnera généralement des résultats satisfaisants. Toutefois, il reste possible d'effectuer un simple repliement à 90°.In an advantageous embodiment, making it possible to increase the wire retention effort, the wings are folded not only towards one another, but also slightly towards the front. Folding at an angle of approximately 120 ° will generally give satisfactory results. However, it is still possible to perform a simple 90 ° folding.
De tels moyens de déplacement d'isolant sont utilisables dans des bornes ayant une constitution de la partie avant différente de celle mentionnée plus haut.Such insulation displacement means can be used in terminals having a constitution of the front part different from that mentioned above.
D'autres aspects encore de l'invention apparaîtront à la lecture de la description qui suit d'un mode particulier de réalisation, donné à titre d'exemple non limitatif.Still other aspects of the invention will appear on reading the following description of a particular embodiment, given by way of non-limiting example.
La description se réfère aux dessins qui l'accompagnent, dans lesquels :The description refers to the accompanying drawings, in which:
- la figure 1 est une vue en élévation d'une borne selon un mode particulier de réalisation de l'invention ;- Figure 1 is an elevational view of a terminal according to a particular embodiment of the invention;
- la figure 2 est une vue en perspective depuis l'avant de la figure 1 ;- Figure 2 is a perspective view from the front of Figure 1;
- la figure 3 est une vue de dessus de la borne de la figure 1 ; - la figure 4 est une vue en coupe suivant la ligne IV-IV de la figure 3 ; - la figure 5 est une vue en courbe suivant la ligne V-V de la figure 4 ;- Figure 3 is a top view of the terminal of Figure 1; - Figure 4 is a sectional view along line IV-IV of Figure 3; - Figure 5 is a curved view along the line VV of Figure 4;
- la figure 6 est une vue en perspective depuis le dessus montrant une constitution possible de la partie arrière de la borne ; et- Figure 6 is a perspective view from above showing a possible constitution of the rear part of the terminal; and
- la figure 7 est une vue développée d'un flan découpé destiné à constituer la borne.- Figure 7 is a developed view of a cut blank intended to constitute the terminal.
La borne de contact électrique 10 montrée en figures 1 à 6 peut être regardée comme ayant une partie avant destinée à recevoir une lame de contact mâle 12 et une partie arrière constituant un fût à sertir.The electrical contact terminal 10 shown in FIGS. 1 to 6 can be viewed as having a front part intended to receive a male contact blade 12 and a rear part constituting a barrel to be crimped.
La partie avant de la borne 10 présente une forme de cage ayant un fond 22, deux côtés 24a et 24b et un plafond 26. Dans le mode de réalisation illustré, la totalité du côté 24b est constituée par pliage à 90° d'un flan d'origine, autour d'un des bords longitudinaux du fond 22. Le plafond 26 est raccordé au côté 24b par un autre pli à 90°. En revanche, l'autre côté 24a n'est pas constitué en totalité par replie¬ ment à 90° du flan d'origine autour de l'autre-bord du fond 22. Le flan présente une échancrure rectangulaire faisant apparaître une arête 28. Cette échancrure est comblée par une fraction du flan d'origine située de l'autre côté du fond 22, replié à 90° autour du bord du plafond 26. En général, la ligne de contact 30 entre les deux fractions du côté 24a sera approximativement dans le plan médian de ce côté.The front part of the terminal 10 has a cage shape having a bottom 22, two sides 24a and 24b and a ceiling 26. In the illustrated embodiment, the entire side 24b is formed by folding a blank at 90 °. original, around one of the longitudinal edges of the bottom 22. The ceiling 26 is connected to the side 24b by another fold at 90 °. On the other hand, the other side 24a is not made up entirely by 90 ° replie¬ ment of the original blank around the other edge of the bottom 22. The blank has a rectangular notch showing an edge 28. This notch is filled by a fraction of the original blank located on the other side of the bottom 22, folded at 90 ° around the edge of the ceiling 26. In general, the contact line 30 between the two fractions on the side 24a will be approximately in the midplane on this side.
Le fond 22 est découpé de façon à constituer une première lame de contact élastique 32 destinée à s'appuyer sur la lame de contact mâle 12 lorsque celle-ci est insérée. Un prolonge¬ ment du fond replié vers l'arrière constitue un rabat 34 de maintien en précontrainte de la lame 32.The bottom 22 is cut so as to constitute a first elastic contact blade 32 intended to bear on the male contact blade 12 when the latter is inserted. A prolongation of the back folded back constitutes a flap 34 for holding the blade 32 in preload.
Une seconde lame de contact électrique 36, disposée en face de la lame 32, est solidaire du plafond 26. Elle est constituée à partir d'un prolongement arrière du flan qui est replié à 180° et galbé. La partie arrière de la lame 36 ainsi constituée est en appui contre le plafond. Sa partie avant présente sensiblement la même forme que celle de la lame 32 et elle est, elle aussi, retenue en précontrainte par un rabat 34. Une fenêtre 37 peut être découpée dans le plafond 26 et déborder sur les côtés pour recevoir un doigt de verrouillage. Pour faciliter la fabrication de la borne, l'arête 28 est avantageusement sensiblement dans le même plan transversal que le pied de prolongement qui donnera naissance a la borne élastique 36, et donc que le pli à 180°.A second electrical contact blade 36, disposed opposite the blade 32, is integral with the ceiling 26. It is formed from a rear extension of the blank which is folded 180 ° and curved. The rear part of the blade 36 thus formed bears against the ceiling. Its front part has substantially the same shape as that of the blade 32 and it, too, is retained in preload by a flap 34. A window 37 can be cut in the ceiling 26 and overflow on the sides to receive a locking finger. To facilitate the manufacture of the terminal, the edge 28 is advantageously substantially in the same transverse plane as the extension foot which will give rise to the elastic terminal 36, and therefore that the fold at 180 °.
La partie arrière de la borne de contact présente deux pattes ou languettes 16 qui, avant montage d'un fil, se trouvent dans le prolongement des côtés 24a et 24b. Elles sont destinées à être serties ou frettées sur l'isolant d'un conducteur, qui peut appartenir à un câble en nappe. En séparant suffisamment les flancs de la partie avant et de la partie arrière, il est possible de les réaliser de façon simple par découpe d'un flan et pliage.The rear part of the contact terminal has two tabs or tongues 16 which, before mounting a wire, are in the extension of the sides 24a and 24b. They are intended to be crimped or shrunk onto the insulation of a conductor, which may belong to a ribbon cable. By sufficiently separating the sides of the front part and the rear part, it is possible to make them simply by cutting a blank and folding.
La partie arrière de la borne montrée à titre d'exemple comporte encore, en avant des pattes 16, des moyens de déplacement d'isolant en deux emplacements échelonnés le long de la borne.The rear part of the terminal shown by way of example also comprises, in front of the tabs 16, means for moving insulation into two locations staggered along the terminal.
Ces moyens comprennent deux ailes 38 prolongeant les côtés 24a et 24b, constituées par découpe du flan et par re¬ pliement à 90° autour de lignes orthogonales au fond, orientées perpendiculairement au sens d'allongement du contact et délimitant une fente de largeur adaptée à celle du fil. Les arêtes en regard des ailes peuvent être parallè¬ les sur toute leur longueur ou donner à la fente une entrée convergente. Pour faciliter le pliage des ailes 38, les échancrures du flan qui les séparent du fond 22 peuvent dépasser ces ailes vers l'avant.These means comprise two wings 38 extending the sides 24a and 24b, formed by cutting the blank and by refolding at 90 ° around lines orthogonal to the bottom, oriented perpendicular to the direction of elongation of the contact and delimiting a slot of width adapted to that of the wire. The edges opposite the wings can be parallel over their entire length or give the slot a convergent entry. To facilitate the folding of the wings 38, the notches in the blank which separate them from the bottom 22 can project these wings forward.
Dans le mode de réalisation illustré, seul le fond de la borne subsiste entre les ailes et les pattes de sertissage 16.In the illustrated embodiment, only the bottom of the terminal remains between the wings and the crimping lugs 16.
Les moyens de déplacement d'isolant de la borne représen- tée comprennent également une fourche 40 placée en avant des ailes 38 et parallèle à ces ailes. Cette fourche est consti- tuée par une fraction qui est découpée dans la partie du flan qui donne naissance au plancher et qui est pliée à 90° autour d'une ligne transversale 42. Cette fraction peut avoir une largeur telle qu'elle s'appuie sur les côtés lorsque la borne est terminée. De plus la fourche peut se prolonger à son extrémité supérieure par des becs transversaux 44 dirigés vers l'extérieur. Sur la borne terminée ces becs sont encastrés dans des encoches 46 pratiquées dans l'arête supé¬ rieure des côtés 24a et 24b. L'encastrement ainsi réalisé permet de retenir la fourche 40 dans sa position nominale même lorsqu'elle est soumise à la pression de l'isolant d'un fil qui est enfoncé dans la direction de la flèche f de la figure 6.The insulation displacement means of the terminal shown also include a fork 40 placed in front of the wings 38 and parallel to these wings. This fork is made up of killed by a fraction which is cut in the part of the blank which gives rise to the floor and which is folded at 90 ° around a transverse line 42. This fraction can have a width such that it is supported on the sides when the terminal is finished. In addition, the fork can be extended at its upper end by transverse beaks 44 directed outwards. On the completed terminal, these nozzles are embedded in notches 46 formed in the upper edge of the sides 24a and 24b. The embedding thus produced makes it possible to retain the fork 40 in its nominal position even when it is subjected to the pressure of the insulator of a wire which is pressed in the direction of the arrow f in FIG. 6.
Pour accroître encore la résistance à la déformation de la partie arrière, en forme de canal, le fond et les côtés peuvent être déformés par poinçonnement en plusieurs empla¬ cements 48, comme indiqué sur les figures 1 et 3.To further increase the resistance to deformation of the rear part, in the form of a channel, the bottom and the sides can be deformed by punching into several locations 48, as indicated in FIGS. 1 and 3.
Pour constituer une borne du genre montré sur les figures 1 à 6, on découpe tout d'abord un flan du genre montré en figure 7, où les portions qui donnent ensuite naissance à des éléments de la borne complète sont désignées par le même numéro de référence. On constate sur cette figure qu'aucune fente étroite n'est à pratiquer entre des fractions qui sont, sur la borne complète, séparées par un pli. La découpe est relativement simple et peut être exécutée même dans une tôle très mince.To constitute a terminal of the kind shown in FIGS. 1 to 6, a blank of the kind shown in FIG. 7 is first cut out, where the portions which then give rise to elements of the complete terminal are designated by the same number of reference. It can be seen in this figure that no narrow slit is to be made between fractions which are, on the complete terminal, separated by a fold. Cutting is relatively simple and can be performed even in very thin sheet metal.
Les pliages successifs à effectuer ressortent de la constitution de la borne et peuvent être effectués sur une ligne transfert. Pour que la liaison entre les becs 44 et les côtés 24a et 24b soient assimilable à un encastrement, on donne avantageusement aux encoches 46 une largeur légèrement inférieure à l'épaisseur du feuillard qui constitue la borne et on déforme légèrement au moins un des bords des encoches, comme indiqué sur la figure 6, avant de plier les côtés. Au cours d'une étape terminale de fabrication, l'outil de pliage exerce des efforts dans la direction des flèches fl pour pincer les ergots 44.The successive folds to be carried out appear from the constitution of the terminal and can be carried out on a transfer line. So that the connection between the spouts 44 and the sides 24a and 24b can be likened to embedding, the notches 46 are advantageously given a width slightly less than the thickness of the strip which constitutes the terminal and at least one of the edges of the edges is slightly deformed notches, as shown in Figure 6, before folding the sides. During a final manufacturing step, the folding tool exerts efforts in the direction of the arrows fl to pinch the lugs 44.
A titre d'exemple, on peut indiquer que l'invention a permis de réaliser des bornes destinées à recevoir des languettes mâles ayant une section de 0,63 x 0,63 mm, pouvant être réparties au pas de 2,50 mm (un dixième de pouce) . Une constitution en feuillard de 0,15 mm est possible.By way of example, it may be indicated that the invention has made it possible to produce terminals intended to receive male tabs having a section of 0.63 x 0.63 mm, which can be distributed in steps of 2.50 mm (a tenth of an inch). A 0.15 mm strip construction is possible.
La borne de contact est utilisable dans des modules connecteurs de constitution connue, par exemple du genre décrit dans la demande de brevet français N° 93 03910 (publication n° 2 703 520) .The contact terminal can be used in connector modules of known constitution, for example of the type described in French patent application No. 93 03910 (publication No. 2 703 520).
L'invention est susceptible de nombreuses variantes de réalisation. La partie arrière de la borne peut avoir une constitution différente de celle qui a été décrite est montrée sur la figure 6. On peut par exemple utiliser des moyens de dénudage d'isolant du genre décrit dans le document FR-A-2656469 ou dans la demande de brevet FR 93 03910. Il est également possible de prévoir une partie arrière ayant simplement une paire de pattes de sertissage sur l'isolant d'un fil et une paire de pattes de sertissage sur le conduc¬ teur. La borne est utilisable également sur un fil discret. De même, la partie avant de la borne peut avoir une constitution différente de celle qui a été décrite, par exemple celle décrite dans le document EP-A-0310487. The invention is susceptible of numerous variant embodiments. The rear part of the terminal can have a different constitution from that which has been described is shown in FIG. 6. One can for example use insulation stripping means of the kind described in document FR-A-2656469 or in patent application FR 93 03910. It is also possible to provide a rear part having simply a pair of crimping lugs on the insulation of a wire and a pair of crimping lugs on the conduc¬ tor. The terminal can also be used on a discrete wire. Likewise, the front part of the terminal may have a constitution different from that which has been described, for example that described in document EP-A-0310487.

Claims

REVENDICATIONS
1. Borne de contact électrique d'une seule pièce en tôle, pliée, ayant une partie avant enfichable constituant une cage formée d'un fond (22), de deux côtés (24a, 24b) et d'un rabat avant (34) de retenue de la lame respective en précontrainte, et d'un plafond (26), le fond et le plafond étant découpés pour former chacun une lame élastique de contact (32,36), en porte à faux vers l'avant, ayant une partie arrière de connexion à un fil, ayant des pattes rabattables (16) de sertissage sur l'isolant d'un fil, caractérisée en ce que la lame (36) appartenant au plafond est constituée par un prolongement arrière du plafond replié à 180° vers l'intérieur et vers l'avant, et en ce que le fond (22) et les côtés (24a, 24b) sont à simple paroi.1. One-piece bent sheet metal electrical contact terminal having a plug-in front part constituting a cage formed by a bottom (22), on two sides (24a, 24b) and a front flap (34) retaining the respective pre-stressed blade, and a ceiling (26), the bottom and the ceiling being cut to each form an elastic contact blade (32,36), cantilevered towards the front, having a rear part for connection to a wire, having folding tabs (16) for crimping on the insulation of a wire, characterized in that the blade (36) belonging to the ceiling consists of a rear extension of the ceiling folded at 180 ° inwards and forwards, and in that the bottom (22) and the sides (24a, 24b) are single-walled.
2. Borne suivant la revendication 1, caractérisée en ce qu'une partie inférieure d'un premier côté (24a) est ratta¬ chée à un bord du fond (22) par un pli à 90° tandis que l'autre côté (24b) , le plafond (26) et la partie supérieure du premier côté (24a) se raccordent à l'autre bord du fond par un pli à 90° parallèle au premier pli à 90°.2. Terminal according to claim 1, characterized in that a lower part of a first side (24a) is attached to an edge of the bottom (22) by a 90 ° fold while the other side (24b ), the ceiling (26) and the upper part of the first side (24a) are connected to the other edge of the bottom by a 90 ° fold parallel to the first 90 ° fold.
3. Borne suivant la renvendication 2, caractérisée en ce que ladite partie supérieure se termine vers l'arrière sensiblement dans le prolongement transversal du pli à 180° de raccordement de la lame de contact correspondante et l'arête terminale de la partie supérieure prend appui contre l'arête d'un élargissement de la partie inférieure.3. Terminal according to claim 2, characterized in that said upper part ends rearward substantially in the transverse extension of the fold at 180 ° connecting the corresponding contact blade and the end edge of the upper part is supported against the widening edge of the lower part.
4. Borne selon la revendication 1, 2 ou 3 , caractérisée par une fenêtre (37) de réception d'un doigt de verrouillage ménagé dans le plafond.4. Terminal according to claim 1, 2 or 3, characterized by a window (37) for receiving a locking finger formed in the ceiling.
5. Borne selon l'une quelconque des revendications précédentes, caractérisée en ce que la partie arrière porte des moyens de déplacement d'isolant (38,40) . 5. Terminal according to any one of the preceding claims, characterized in that the rear part carries insulation displacement means (38,40).
6. Borne selon la revendicatinm 5, caractérisée en ce que les moyens de déplacement d'isolant comprennent : d'une part deux ailes (38) formées par repliement l'une vers l'autre de parties terminales des deux côtés (24a, 24b) de la cage, lesdites ailes délimitant une fente parallèle aux côtés, d'autre part une fourche (40) placée en avant des ailes, parallèle à ces ailes, formée par repliement à 90° d'un prolongement arrière d'un fond (22) de la cage autour d'une ligne transversale et s'appuyant sur les côtés.6. Terminal according to claim 5, characterized in that the insulation displacement means comprise: on the one hand two wings (38) formed by folding towards each other end portions on both sides (24a, 24b) of the cage, said wings delimiting a slot parallel to the sides, on the other hand a fork ( 40) placed in front of the wings, parallel to these wings, formed by 90 ° folding of a rear extension of a bottom (22) of the cage around a transverse line and pressing on the sides.
7. Borne suivant la revendication 6, caractérisée en ce que les branches de la fourche (40) présentent, à leur extrémité, un bec transversal (44) dirigé vers l'extérieur, encastré dans une encoche (46) du côté respectif (24a, 24b).7. Terminal according to claim 6, characterized in that the branches of the fork (40) have, at their end, a transverse spout (44) directed outwards, embedded in a notch (46) on the respective side (24a , 24b).
8. Borne selon la revendication 7, caractérisée en ce que lesdites encoches (46) ont une largeur légèrement inférieure à l'épaisseur de la fourche.8. Terminal according to claim 7, characterized in that said notches (46) have a width slightly less than the thickness of the fork.
9. Borne suivant la revendication 6, 7 ou 8, caractérisée en ce que les deux ailes (38) sont repliées l'une vers l'autre et également vers l'avant, de façon à augmenter la force de rétention du fil. 9. Terminal according to claim 6, 7 or 8, characterized in that the two wings (38) are folded towards one another and also forward, so as to increase the retention force of the wire.
10. Borne suivant la revendication 9, caractérisée en ce que les ailes (38) sont repliées d'environ 120°.10. Terminal according to claim 9, characterized in that the wings (38) are folded about 120 °.
11. Borne selon l'une quelconque des revendications 6 à11. Terminal according to any one of claims 6 to
10, caractérisée par des échancrures à la base des ailes, à leur raccordement avec le fond (22) . 10, characterized by notches at the base of the wings, at their connection with the bottom (22).
12. Borne selon l'une quelconque des revendications 6 à12. Terminal according to any one of claims 6 to
11, caractérisée par des poinçonnements (48) du fond et des côtés, entre les ailes (38) et la fourche (40) . 11, characterized by punctures (48) on the bottom and sides, between the wings (38) and the fork (40).
EP95934199A 1994-10-13 1995-10-11 Electrical contact terminal comprising prestressed terminal blades Expired - Lifetime EP0786159B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR9412231A FR2725839A1 (en) 1994-10-13 1994-10-13 Low voltage electrical contact for use in motor vehicle wiring connection
FR9412231 1994-10-13
FR9412230 1994-10-13
FR9412230A FR2725835A1 (en) 1994-10-13 1994-10-13 Low voltage electrical contact for use in motor vehicle wiring connection
PCT/FR1995/001325 WO1996012324A1 (en) 1994-10-13 1995-10-11 Electrical contact terminal comprising prestressed terminal blades

Publications (2)

Publication Number Publication Date
EP0786159A1 true EP0786159A1 (en) 1997-07-30
EP0786159B1 EP0786159B1 (en) 1999-09-22

Family

ID=26231467

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95934199A Expired - Lifetime EP0786159B1 (en) 1994-10-13 1995-10-11 Electrical contact terminal comprising prestressed terminal blades

Country Status (4)

Country Link
EP (1) EP0786159B1 (en)
AT (1) ATE185025T1 (en)
DE (1) DE69512427T2 (en)
WO (1) WO1996012324A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2826786B1 (en) 2001-06-29 2004-03-05 Framatome Connectors Int FEMALE ELECTRIC CONTACT
EP2487757B1 (en) * 2011-02-10 2014-07-02 Delphi Technologies, Inc. Electric connecting element

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60110930U (en) * 1983-12-27 1985-07-27 アムプ　インコ−ポレ−テツド female electrical contact
FR2621180B1 (en) * 1987-09-28 1990-01-12 Francelco Sa CAGE TYPE ELECTRIC CONTACT TERMINAL
EP0357816B1 (en) * 1988-09-07 1993-10-27 Weidmüller Interface GmbH & Co. Double-pronged flat spring contact
DE3942276A1 (en) * 1989-12-21 1991-07-04 Telefonbau & Normalzeit Gmbh CONTACT SPRING SOCKET FOR CONNECTABLE CONNECTION OF CABLE CHARGERS AND SWITCHING WIRES
FR2673490B3 (en) * 1991-03-01 1993-06-25 Francelco METHOD FOR MANUFACTURING ELECTRIC CONTACT BY CUTTING AND FOLDING.
FR2699010B1 (en) * 1992-12-07 1994-12-30 Cinch Connecteurs Sa Female electrical contact member.
FR2703520B1 (en) * 1993-04-02 1997-04-30 Francelco Sa Electrical connector module and method of mounting such a module.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9612324A1 *

Also Published As

Publication number Publication date
EP0786159B1 (en) 1999-09-22
DE69512427T2 (en) 2000-02-17
WO1996012324A1 (en) 1996-04-25
ATE185025T1 (en) 1999-10-15
DE69512427D1 (en) 1999-10-28

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