EP0020241A1 - Connecting device for insulated electrical conductors - Google Patents

Connecting device for insulated electrical conductors Download PDF

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Publication number
EP0020241A1
EP0020241A1 EP80400708A EP80400708A EP0020241A1 EP 0020241 A1 EP0020241 A1 EP 0020241A1 EP 80400708 A EP80400708 A EP 80400708A EP 80400708 A EP80400708 A EP 80400708A EP 0020241 A1 EP0020241 A1 EP 0020241A1
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EP
European Patent Office
Prior art keywords
fork
slot
connection
connection piece
slots
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
EP80400708A
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German (de)
French (fr)
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EP0020241B1 (en
Inventor
Claude Yapoudjian
Roger Pochet
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.)
Nexans Interface SA
Original Assignee
Mars-Alcatel SA
Mars Actel SA
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.)
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Publication date
Application filed by Mars-Alcatel SA, Mars Actel SA filed Critical Mars-Alcatel SA
Priority to AT80400708T priority Critical patent/ATE6970T1/en
Publication of EP0020241A1 publication Critical patent/EP0020241A1/en
Application granted granted Critical
Publication of EP0020241B1 publication Critical patent/EP0020241B1/en
Expired legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/242—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members being plates having a single slot
    • H01R4/2425—Flat plates, e.g. multi-layered flat plates

Definitions

  • the subject of the invention is a device for connecting insulated electrical conductors by insulation displacement connector comprising a conductive connection piece of the fork or clamp type with at least two elastic branches providing between them a slot in which the electrical conductor to be connected is inserted.
  • the connecting piece being intended to be introduced into a cell of a base made of insulating material, characterized in that the connecting piece of the double fork type has two inclined slots whose axes converge towards the top of the connector.
  • connection piece comprises at least one accentuated boss on the internal edge of one of the branches of the connection piece, a boss situated between the bottom of the slot and the opening of the slot and intended for a part to calibrate the opening of the slot and secondly to retain the conductor in the slot after its establishment and the boss is obtained by pushing, stamping, stamping or the like, executed near the edge of said slot but at a certain distance from said edge so as not to reduce the thickness of the part on its edge.
  • connection part comprises an orifice formed in the central branch intended to hang in a stud, carried by the support so as to immobilize the central branch during the introduction of a conductor into a slot the connecting piece.
  • the fork connection piece shown in the figures is made from a spring-quality metallic material, according to a known manufacturing process.
  • It consists of 3 branches: a left side branch 1, a central branch 2, a right side branch 3.
  • V-shaped slots Between the branches are V-shaped slots: left slot 4, right slot 5, the openings 6 and 7 of which are strictly identical in size and adapted to the diameters of the conductors.
  • the conductors are inserted one after the other, each in their respective slots, up to a certain distance from the inlet.
  • the conductor 8 is pushed into the slot 5 (according to FIG. 2); as and when it moves the elastic branches 2 and 3 are progressively spaced from each other which has the effect of increasing the opening 7 but also and above all would have the effect of reducing the opening 6 if the central branch was not maintained.
  • a feature of the present invention aims to remedy this kind of drawback.
  • an insulating support 10 is provided the housing 11 of the fork 12. Inside the housing 11 a rigid stud 13 will be placed in a hole 14 formed in the central branch 2 of the fork. Under these conditions, it can be seen that the introduction of the conductor 8 into the slot 5 progressively separates the right lateral branch 3 from the central branch 2 in the direction of the arrow C. It there is displacement only of the side branch 3 only because the central branch 2 is held stationary by the stud 13 passing through the orifice 14. As a result, the opening 6 of the slot 4 does not vary any more, whence an opening dimension which remains well suited to the diameters of the conductors to be inserted.
  • FIG. 3 shows an exemplary embodiment allowing both the reduction of the precision of the crushing and the improvement of the retention of the conductive wire in the slot of the fork.
  • the spacing of the lateral branches 1 and 3 relative to the central branch 2 is obtained by crushing 37 and 38 and displacement of the metal of the central branch 2 no longer at the base of the slots 4 and 5 but at an intermediate distance between the base and the top of the slot, crushings which cause bosses 59.
  • Figure 3 shows that for the same opening the value of the crushing is less critical than in the case of Figure 2 due to its reduced distance from the top of the slot.
  • FIG. 3 shows an example of use.
  • the fork being placed in its insulating support 10, the central branch 2 is immobilized by the stud 13 passing through the orifice 14 of the central branch.
  • a conducting wire 8 is inserted into the slot 5 until it rests on the upper face 28 of the insulating support 10. At this time the conducting wire 8 is below the level of the crush 38.
  • the face 28 thus determines the lower limit the position that the boss 59 can take
  • the crushing of the material which forms the stop must not reduce the thickness of the metal in the bearing area 58 of the boss 59 against the opposite branch (see Figure 4 section IV-IV of Figure 3).
  • the crushings 36 and 37 are carried out simultaneously by a punch in full material on the two faces 54 and 55 of the branch 2 at a certain distance 57 from the support zone 58, thus pushing the material back without reducing its thickness. in the same way on the two faces 54 and 55.
  • the crushings instead of being carried out on only one of the two branches forming the slot, can be provided in smaller dimensions on either side of the slot on each of the branches.
  • the outer dimensions of the forks vary depending on the state of the idle or working fork. On a fork in the rest state the size of the end of the fork is less than the size of the base of the fork.
  • the shape of the stop can be of different types. Furthermore, this device is equally applicable to forks comprising one or more slots (single, double, triple forks, etc.).
  • FIG. 5 shows a variant connector in which the bosses have the shape of a harpoon 67, 68. They are obtained by means of a triangular-shaped die cut 69, 70.
  • the shape of the bosses 67, 68 allows the introduction of the conductive wire 8 while preventing the exit of this conductor when a tensile force is exerted on this conductive wire in the direction of the opening of the slot.
  • Figures 6 and 7 show an exemplary embodiment which provides a reduction in the dimensions of the fork both at the end and at the base, without detracting from the mechanical characteristics from which the electrical characteristics derive.
  • the central branch 62 has a slight triangular shape so that the slots 64 and 65 are not parallel but are placed on axes which converge towards a point located beyond the top of the fork.
  • the openings 66 and 67 formed in the base of the fork are not parallel but are placed on axes which converge towards a point situated beyond the base of the fork.
  • the slots 64 and 65 can be extended by slots 76, 77 which are mutually parallel or have different inclinations from the slots 64 and 65.
  • This arrangement makes it possible to keep the lateral branches 61 and 63 of sufficient material sections in the active parts in particular in the zones 71 and 72 on the one hand and 73 and 74 on the other part, while reducing both the top and bottom dimensions.
  • FIGS. 6 and 7 shows such a fork in the working state in which a wire 8 is inserted, it can then be seen that the dimension at the top remains less than the dimension of the base of the fork 75.
  • insulation displacement contacts with pressure contacts by pressure, in particular with radial pressure either external or internal, which are respectively double forks terminated by contacts with external and then internal radial pressure, and contacts with simple fork terminated by contacts with external and internal radial pressure.
  • This fork placed in an insulating support is extended at its base by two elastic tabs 80 and 81 provided with contact pads 82 and 83, which pads must in principle come to bear in a U-shaped metal part 84 .
  • the stud 82 When the fork is in the rest state, left part of the figure, the stud 82 is under pressure therefore ensures electrical contact with the part 84.
  • the lateral branch 63 moves to the right in the direction of the arrow H by pivoting around a fictitious articulation point 88 located at the base of the clearance light 67. If the bridge 90 did not exist, in its pivoting the lateral branch 63 would cause the elastic tab 81, thus displacing the stud 83 of the metal part 84 and thereby reducing the contact pressure. Assuming the left part of the fork also in the working position, the pressure then exerted by the studs 82 and 83 on the metal part 84 could become zero, thus causing the interruption of the electrical circuit.
  • the elastic tabs 80 and 81 are joined together using a bridge 90 which will have the role of suppressing the rotational movement communicated by the lateral branch 63 to the elastic tab 81, now therefore the stud 83 in permanent contact 85 with the metal part 84.
  • the same reasoning is valid for the left-hand side of the fork when the latter is also in the working position. Any intervention on the fork part will therefore have no repercussions on the pressure contact part. By way of reciprocity, any intervention on the pressure contact part will have no repercussions on the fork part.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Multi-Conductor Connections (AREA)

Abstract

PCT No. PCT/FR80/00084 Sec. 371 Date Jan. 25, 1981 Sec. 102(e) Date Jan. 13, 1981 PCT Filed May 21, 1980 PCT Pub. No. WO80/02775 PCT Pub. Date Dec. 11, 1980.A connector for self-stripping insulated electric conductors, said conductor including a fork or clip type conductive connection part with at least two resilient arms between which is provided a slot for inserting the electric conductor to be connected, the connection part being designed for inserting in a cavity in a stand made of insulating material. The double fork type connection part (75) has two inclined slots (64, 65) whose axes converge towards the top of the connector. Application to electric connections, in particular in telecommunications.

Description

L'invention a pour objet un dispositif de raccordement de conducteurs électriques isolés par connecteur autodénudant comportant une pièce conductrice de connexion du type à fourche ou à pince à au moins deux branches élastiques ménageant entre elles une fente dans laquelle est inséré le conducteur électrique à connecter, la pièce de connexion étant destinée à être introduite dans un alvéole d'un socle en matière isolante, caractérisé par le fait que la pièce de connexion du type à double fourche comporte deux fentes inclinées dont les axes sont convergents vers le sommet du connecteur.The subject of the invention is a device for connecting insulated electrical conductors by insulation displacement connector comprising a conductive connection piece of the fork or clamp type with at least two elastic branches providing between them a slot in which the electrical conductor to be connected is inserted. , the connecting piece being intended to be introduced into a cell of a base made of insulating material, characterized in that the connecting piece of the double fork type has two inclined slots whose axes converge towards the top of the connector.

Selon l'invention la pièce de connexion comporte au moins un bossage accentué sur le bord interne de l'une des branches de la pièce de connexion, bossage situé entre le fond de la fente et l'ouverture de la fente et destiné d'une part à calibrer l'ouverture de la fente et d'autre part à retenir le conducteur dans la fente après sa mise en place et le bossage est obtenu par repoussage, matriçage, emboutissage ou analogue, exécuté près du bord de ladite fente mais à une certaine distance dudit bord de façon à ne pas réduire l'épaisseur de la pièce sur son bord.According to the invention, the connection piece comprises at least one accentuated boss on the internal edge of one of the branches of the connection piece, a boss situated between the bottom of the slot and the opening of the slot and intended for a part to calibrate the opening of the slot and secondly to retain the conductor in the slot after its establishment and the boss is obtained by pushing, stamping, stamping or the like, executed near the edge of said slot but at a certain distance from said edge so as not to reduce the thickness of the part on its edge.

Selon l'invention, la pièce de connexion comporte un orifice ménagé dans la branche centrale destiné à s'accrocher dans un téton, porté par le support de façon à immobiliser la branche centrale lors de l'introduction d'un conducteur dans une fente de la pièce de connexion.According to the invention, the connection part comprises an orifice formed in the central branch intended to hang in a stud, carried by the support so as to immobilize the central branch during the introduction of a conductor into a slot the connecting piece.

Selon l'invention une pièce de connexion munie de deux pattes de contact à pression opposées aux branches de la fourche comporte un pont réunissant les deux pattes de façon à empêcher le déplacement de l'extrémité des pattes de contact lors de l'introduction d'un conducteur dans la fourche.

  • Les figures du dessin annexé montrent plusieurs exemples de réalisation d'un connecteur selon l'invention.
  • La figure 1 est une vue en perspective d'un connecteur à fourche séparé de son support.
  • La figure 2 montre un connecteur à double fourche dans son logement dans le support.
  • La figure 3 représente une autre forme de réalisation de connecteur dans son support.
  • La figure 4 est une vue de détail de la figure 3 en coupe suivant la ligne IV-IV.
  • La figure 5 montre une autre forme de réalisation.
  • La figure 6 représente un connecteur multiple avec double fourche d'un côté et fourche simple de l'autre côté.
  • La figure 7 représente un connecteur avec double fourche d'un côté et pattes de contact élastiques de l'autre côté.
According to the invention a connection piece provided with two pressure contact legs opposite the fork legs has a bridge joining the two legs so as to prevent the displacement of the end of the contact legs during the introduction of a driver in the fork.
  • The figures of the appended drawing show several exemplary embodiments of a connector according to the invention.
  • Figure 1 is a perspective view of a fork connector separated from its support.
  • Figure 2 shows a double fork connector in its housing in the holder.
  • Figure 3 shows another embodiment of connector in its support.
  • Figure 4 is a detail view of Figure 3 in section along the line IV-IV.
  • Figure 5 shows another embodiment.
  • Figure 6 shows a multiple connector with double fork on one side and single fork on the other side.
  • Figure 7 shows a connector with double fork on one side and elastic contact tabs on the other side.

La pièce de connexion à fourche représentée sur les figures est réalisée à partir d'un matériau métallique de qualité ressort, suivant un procédé de fabrication connu.The fork connection piece shown in the figures is made from a spring-quality metallic material, according to a known manufacturing process.

Elle est constituée de 3 branches : une branche latérale gauche 1, une branche centrale 2, une branche latérale droite 3.It consists of 3 branches: a left side branch 1, a central branch 2, a right side branch 3.

Entre les branches sont ménagées des fentes en forme de V : fente gauche 4, fente droite 5, dont les ouvertures 6 et 7 sont de dimensions rigoureusement identiques et adaptées aux diamètres des conducteurs.Between the branches are V-shaped slots: left slot 4, right slot 5, the openings 6 and 7 of which are strictly identical in size and adapted to the diameters of the conductors.

Les conducteurs sont enfoncés l'un après l'autre, chacun dans .eur fente respective, jusqu'à une certaine distance de l'orifice d'entrée.The conductors are inserted one after the other, each in their respective slots, up to a certain distance from the inlet.

Le conducteur 8 est poussé dans la fente 5 (suivant figure 2) ; au fur et à mesure de son déplacement les branches élastiques 2 et 3 sont progressivement écartées l'une de l'autre ce qui a pour effet d'augmenter l'ouverture 7 mais aussi et surtout aurait pour effet de réduire l'ouverture 6 si la branche centrale n'était pas maintenue.The conductor 8 is pushed into the slot 5 (according to FIG. 2); as and when it moves the elastic branches 2 and 3 are progressively spaced from each other which has the effect of increasing the opening 7 but also and above all would have the effect of reducing the opening 6 if the central branch was not maintained.

Cette réduction de l'ouverture 6 n'est pas souhaitée car l'insertion d'un conducteur dans la fente 4 ne serait pas effectuée dans les mêmes conditions que l'insertion du conducteur 8 dans la fente 5. En particulier l'effort d'insertion du conducteur deviendrait plus important et cet effort trop important pourrait se traduire par la rupture du conducteur.This reduction of the opening 6 is not desired since the insertion of a conductor into the slot 4 would not be carried out under the same conditions as the insertion of the conductor 8 into the slot 5. In particular the effort d 'insertion of the driver would become more important and this excessive effort could result in the driver breaking.

Une particularité de la présente invention a pour but de remédier à ce genre d'inconvénient.A feature of the present invention aims to remedy this kind of drawback.

Dans un support isolant 10 est ménagé le logement 11 de la fourche 12. A l'intérieur du logement 11 un téton 13 rigide viendra se placer dans un trou 14 ménagé dans la branche centrale 2 de la fourche. Dans ces conditions, on constate que l'introduction du conducteur 8 dans la fente 5 écarte progressivement la branche latérale droite 3 de la branche centrale 2 dans le sens de la flèche C. Il n'y a déplacement que de la seule branche latérale 3 car la branche centrale 2 est maintenue immobile par le téton 13 passant dans l'orifice 14. Il en résulte que l'ouverture 6 de la fente 4 ne varie plus, d'où une dimension d'ouverture qui reste bien adaptée aux diamètres des conducteurs à insérer.In an insulating support 10 is provided the housing 11 of the fork 12. Inside the housing 11 a rigid stud 13 will be placed in a hole 14 formed in the central branch 2 of the fork. Under these conditions, it can be seen that the introduction of the conductor 8 into the slot 5 progressively separates the right lateral branch 3 from the central branch 2 in the direction of the arrow C. It there is displacement only of the side branch 3 only because the central branch 2 is held stationary by the stud 13 passing through the orifice 14. As a result, the opening 6 of the slot 4 does not vary any more, whence an opening dimension which remains well suited to the diameters of the conductors to be inserted.

Il existe plusieurs méthodes pour obtenir dans les fourches des fentes ouvertes. Suivant l'une d'elle (figure 2), après avoir découpé la fourche dans le métal de façon classique, on obtient les fentes 4 et 5 parallèles entre elles, sans enlèvement de métal, fentes qui ne sont pas encore ouvertes mais jointives. L'ouverture des fentes est alors obtenu par écrasement 18 et 19 du métal à la base des fentes 4 et 5, cet écrasement provoque un déplacement de métal à l'intérieur des fentes ce qui a pour effet de repousser les branches latérales 1 et 3 formant ainsi les ouvertures 6 et 7. On remarque que la valeur des ouvertures 6 et 7 varie en fonction de la valeur des écrasements 18 et 19. Il faut donc pour avoir des ouvertures 6 et 7 précises et parfaitement adaptées aux diamètres des conducteurs, réaliser des écrasements 18 et 19 parfaitement calibrés.There are several methods to get open slots in the forks. According to one of them (FIG. 2), after having cut the fork in the metal in a conventional manner, the slots 4 and 5 are obtained parallel to each other, without removing the metal, slots which are not yet open but contiguous. The opening of the slots is then obtained by crushing 18 and 19 of the metal at the base of the slots 4 and 5, this crushing causes a displacement of metal inside the slots which has the effect of repelling the lateral branches 1 and 3 thus forming the openings 6 and 7. It is noted that the value of the openings 6 and 7 varies according to the value of the crushings 18 and 19. It is therefore necessary to have openings 6 and 7 precise and perfectly adapted to the diameters of the conductors, make crushings 18 and 19 perfectly calibrated.

Considérons la figure 2 où l'on voit une utilisation classique d'une fourche. La fourche 12 est placée dans son support isolant 10, un fil conducteur 8 est inséré dans la fente 5 jusqu'en appui sur la face supérieure 28 du support isolant 10. Dans cette représentation la branche centrale 2 de la fourche est immobilisée par le téton 13 solidaire du support isolant 10 passant par l'orifice 14 de ladite branche centrale 2. On remarque que les écrasements 18 et 19 se trouvent au dessous de la surface d'appui 28. Par ailleurs si l'on exerce une traction sur le fil conducteur 8 dirigée dans le sens de la flèche F on provoque l'extraction du fil conducteur ; il est évident que la rétention du fil dans la fourche est directement liée à la pression mécanique exercée par les branches de la fourche sur le fil.Consider Figure 2 where we see a classic use of a fork. The fork 12 is placed in its insulating support 10, a conductive wire 8 is inserted into the slot 5 until it rests on the upper face 28 of the insulating support 10. In this representation, the central branch 2 of the fork is immobilized by the stud 13 secured to the insulating support 10 passing through the orifice 14 of said central branch 2. It will be noted that the crushings 18 and 19 are located below the bearing surface 28. Furthermore if traction is exerted on the wire conductor 8 directed in the direction of arrow F causes the extraction of the conductive wire; it is obvious that the retention of the wire in the fork is directly linked to the mechanical pressure exerted by the branches of the fork on the wire.

La figure 3 montre un exemple de réalisation permettant à la fois la réduction de la précision de l'écrasement et l'amélioration de la rétention du fil conducteur dans la fente de la fourche.FIG. 3 shows an exemplary embodiment allowing both the reduction of the precision of the crushing and the improvement of the retention of the conductive wire in the slot of the fork.

La fourche est réalisée comme expliqué précédemment. Ensuite, l'écartement des branches latérales 1 et 3 par rapport à la branche centrale 2 est obtenu par des écrasements 37 et 38 et déplacement du métal de la branche centrale 2 non plus à la base des fentes 4 et 5 mais à une distance intermédiaire entre la base et le sommet de la fente, écrasements qui provoquent des bossages 59.The fork is made as explained above. Then, the spacing of the lateral branches 1 and 3 relative to the central branch 2 is obtained by crushing 37 and 38 and displacement of the metal of the central branch 2 no longer at the base of the slots 4 and 5 but at an intermediate distance between the base and the top of the slot, crushings which cause bosses 59.

Si l'on compare les figures 2 et 3 on constate que pour obtenir une même ouverture au sommet de la fente, il faut certes déplacer moins de matière lors de l'écrasement dans le cas de la figure 2 que dans le cas de la figure 3 ; par contre la moindre différence d'écrasement se traduit rapidement, du fait de sa grande distance par rapport au sommet de la fente, par une variation non négligeable de la valeur de l'ouverture.If we compare Figures 2 and 3 we see that to obtain the same opening at the top of the slot, it is certainly necessary to move less material during crushing in the case of Figure 2 than in the case of Figure 3; on the other hand, the slightest difference in crushing quickly translates, due to its great distance from the top of the slot, by a non-negligible variation in the value of the opening.

La figure 3 montre bien que pour une même ouverture la valeur de l'écrasement est moins critique que dans le cas de la figure 2 du fait de sa distance réduite par rapport au sommet de la fente.Figure 3 shows that for the same opening the value of the crushing is less critical than in the case of Figure 2 due to its reduced distance from the top of the slot.

La partie droite de la figure 3 montre un exemple d'utilisation. La fourche étant placée dans son support isolant 10, la branche centrale 2 est immobilisée par le téton 13 passant par l'orifice 14 de la branche centrale. Un fil conducteur 8 est inséré dans la fente 5 jusqu'en appui sur la face supérieure 28 du support isolant 10. A ce moment le fil conducteur 8 se trouve sous le niveau de l'écrasement 38. La face 28 détermine ainsi la limite inférieure de la position que peut prendre le bossage 59The right part of Figure 3 shows an example of use. The fork being placed in its insulating support 10, the central branch 2 is immobilized by the stud 13 passing through the orifice 14 of the central branch. A conducting wire 8 is inserted into the slot 5 until it rests on the upper face 28 of the insulating support 10. At this time the conducting wire 8 is below the level of the crush 38. The face 28 thus determines the lower limit the position that the boss 59 can take

Si l'on exerce alors une traction sur le fil conducteur 8 dirigée dans le sens de la flèche G on constate que, dans ce cas, la rétention du fil est considérablement augmentée par rapport au cas de la figure 2, puisque en plus de la pression mécanique exercée par les branches de la fourche sur le fil s'ajoute l'action de la butée mécanique formée par le relief 59 de l'écrasement 38.If a pull is then exerted on the conductive wire 8 directed in the direction of the arrow G we note that, in this case, the retention of the wire is considerably increased compared to the case of FIG. 2, since in addition to the mechanical pressure exerted by the branches of the fork on the wire is added by the action of the mechanical stop formed by the relief 59 of the crushing 38.

L'écrasement de la matière qui forme la butée ne doit pas réduire l'épaisseur du métal dans la zone d'appui 58 du bossage 59 contre la branche opposée (voir figure 4 coupe IV-IV de la figure 3). Les écrasements 36 et 37 sont effectués simultanément par un coup de poinçon en pleine matière sur les deux faces 54 et 55 de la branche 2 à une certaine distance 57 de la zone d'appui 58, repoussant ainsi la matière sans en réduire l'épaisseur de la même façon sur les deux faces 54 et 55.The crushing of the material which forms the stop must not reduce the thickness of the metal in the bearing area 58 of the boss 59 against the opposite branch (see Figure 4 section IV-IV of Figure 3). The crushings 36 and 37 are carried out simultaneously by a punch in full material on the two faces 54 and 55 of the branch 2 at a certain distance 57 from the support zone 58, thus pushing the material back without reducing its thickness. in the same way on the two faces 54 and 55.

Les écrasements au lieu d'être exécutés sur seulement l'une des deux branches formant la fente, peuvent être ménagés dans des dimensions plus réduites de part et d'autre de la fente sur chacune des branches.The crushings instead of being carried out on only one of the two branches forming the slot, can be provided in smaller dimensions on either side of the slot on each of the branches.

Les dimensions extérieures des fourches varient suivant l'état de la fourche repos ou travail. Sur une fourche à l'état repos la dimension de l'extrémité de la fourche est inférieure à la dimension de la base de la fourche.The outer dimensions of the forks vary depending on the state of the idle or working fork. On a fork in the rest state the size of the end of the fork is less than the size of the base of the fork.

La forme de la butée peut être de différents types. Par ailleurs, ce dispositif est applicable aussi bien à des fourches comportant une seule ou plusieurs fentes (fourches simples, doubles, triples...).The shape of the stop can be of different types. Furthermore, this device is equally applicable to forks comprising one or more slots (single, double, triple forks, etc.).

La figure 5 représente une variante de connecteur dans laquelle les bossages ont la forme d'un harpon 67, 68. Ils sont obtenus au moyen d'un coup de matrice de forme triangulaire 69, 70. La forme des bossages 67, 68 permet l'introduction du fil conducteur 8 tout en empêchant la sortie de ce conducteur lorsqu'un effort de traction est exercé sur ce fil conducteur en direction de l'ouverture de la fente.FIG. 5 shows a variant connector in which the bosses have the shape of a harpoon 67, 68. They are obtained by means of a triangular-shaped die cut 69, 70. The shape of the bosses 67, 68 allows the introduction of the conductive wire 8 while preventing the exit of this conductor when a tensile force is exerted on this conductive wire in the direction of the opening of the slot.

Sur une fourche à l'état travail dans laquelle sont insérés deux fils, un dans chaque fente, ce qui a pour effet de déplacer les branches latérales, on constate alors que la dimension de l'extrémité de la fourche devient supérieure à la dimension de la base. Ceci est un inconvénient pour une implantation dans des matériels où la miniaturisation est de rigueur.On a fork in the working state in which two wires are inserted, one in each slot, which has the effect of moving the lateral branches, it is then noted that the dimension of the end of the fork becomes greater than the dimension of the base. This is a drawback for implantation in materials where miniaturization is de rigueur.

Les figures 6 et 7 montrent un exemple de réalisation qui apporte une réduction des dimensions de la fourche tant à l'extrémité, qu'à la base, sans nuire pour autant aux caractéristiques mécaniques d'où découlent les caractéristiques électriques. La branche centrale 62 présente une légère forme triangulaire de façon que les fentes 64 et 65 ne soient pas parallèles mais soient placées sur des axes qui convergent vers un point situé au delà du sommet de la fourche.Figures 6 and 7 show an exemplary embodiment which provides a reduction in the dimensions of the fork both at the end and at the base, without detracting from the mechanical characteristics from which the electrical characteristics derive. The central branch 62 has a slight triangular shape so that the slots 64 and 65 are not parallel but are placed on axes which converge towards a point located beyond the top of the fork.

De mêmes les lumières 66 et 67 ménagées dans la base de la fourche ne sont pas parallèles mais sont placées sur des axes qui convergent vers un point situé au delà de la base de la fourche.Similarly, the openings 66 and 67 formed in the base of the fork are not parallel but are placed on axes which converge towards a point situated beyond the base of the fork.

Les fentes 64 et 65 peuvent être prolongées par des fentes 76, 77 parallèles entre elles ou présentant des inclinaisons différentes des fentes 64 et 65.The slots 64 and 65 can be extended by slots 76, 77 which are mutually parallel or have different inclinations from the slots 64 and 65.

Cette disposition permet de conserver aux branches latérales 61 et 63 des sections de matière suffisantes dans les parties actives en particulier dans les zones 71 et 72 d'une part et 73 et 74 d'autre part, tout en réduisant à la fois les dimensions au sommet et à la base.This arrangement makes it possible to keep the lateral branches 61 and 63 of sufficient material sections in the active parts in particular in the zones 71 and 72 on the one hand and 73 and 74 on the other part, while reducing both the top and bottom dimensions.

La partie droite des figures 6 et 7 montre une telle fourche à l'état travail dans laquelle est inséré un fil 8, on constate alors que la dimension au sommet reste inférieure à la dimension de la base de la fourche 75.The right-hand part of FIGS. 6 and 7 shows such a fork in the working state in which a wire 8 is inserted, it can then be seen that the dimension at the top remains less than the dimension of the base of the fork 75.

Les dispositions décrites peuvent être utilisées séparément ou en combinaison sur des fourches simples, doubles. Par ailleurs la base de la fourche peut se prolonger et se terminer de différentes manières dont quelques exemples, non limitatifs, sont donnés ci-après :

  • - Association d'une fourche' simple et d'une fourche double soit tête bêche (figure 6) soit côte à côte.
  • - Association de deux fourches doubles soit tête bêche soit côte à côte.
  • - Association d'une fourche double avec des contacts à pression radiale à liaison électrique par les tranches extérieures (figure 7) ou intérieures.
  • - Fourche double et fourche simple associées à des contacts à pression axiale à liaison électrique par la surface des branches élastiques.
  • - Association d'une fourche double avec des dispositifs de raccordement par connexions enroulées soit double soit simple ; ces connexions enroulées peuvent être du type wrapping ou mini-wrapping.
The arrangements described can be used separately or in combination on single, double forks. Furthermore, the base of the fork can be extended and terminated in different ways, a few non-limiting examples of which are given below:
  • - Associating a fork simple and a double fork or spade head (Figure 6) or side by side.
  • - Association of two double forks either head to tail or side by side.
  • - Association of a double fork with radial pressure contacts with electrical connection by the external (figure 7) or internal sections.
  • - Double fork and single fork associated with axial pressure contacts electrically connected by the surface of the elastic legs.
  • - Association of a double fork with connection devices by rolled up connections either double or simple; these coiled connections can be of the wrapping or mini-wrapping type.

Il est possible d'associer entre eux des contacts autodénudants à fourche à des contacts par pression, en particulier à pression radiale soit extérieure soit intérieure, qui sont respectivement des fourches doubles terminées par des contacts à pression radiale extérieure puis intérieure, et des contacts à fourche simple terminée par des contacts à pression radiale extérieure puis intérieure.It is possible to associate between them insulation displacement contacts with pressure contacts by pressure, in particular with radial pressure either external or internal, which are respectively double forks terminated by contacts with external and then internal radial pressure, and contacts with simple fork terminated by contacts with external and internal radial pressure.

Une telle disposition bien que réalisable n'est pas sans inconvénients. En particulier en ce qui concerne le respect des dimensions géométriques des contacts à pression lorsque des fils conducteurs sont insérés dans les fourches.Such an arrangement, although feasible, is not without drawbacks. In particular with regard to compliance with the geometric dimensions of the pressure contacts when conductive wires are inserted in the forks.

Pour l'explication on prendra l'exemple de la figure 7 d'une fourche double terminée par des contacts à pression radiale extérieure. Suivant la figure 7 la fourche dans la partie gauche est à l'état repos (absence de fil conducteur) tandis que la partie droite est à l'état travail (présence d'un fil conducteur).For the explanation, we will take the example of FIG. 7 of a double fork terminated by contacts with external radial pressure. According to figure 7 the fork in the left part is in the state rest (absence of a conducting wire) while the right part is in the working state (presence of a conducting wire).

Cette fourche placée dans un support isolant suivant les descriptions précédentes, est prolongée à sa base par deux pattes élastiques 80 et 81 munies de plots de contacts 82 et 83, lesquels plots doivent en principe venir en appui dans une pièce métallique en forme de U 84.This fork placed in an insulating support according to the preceding descriptions, is extended at its base by two elastic tabs 80 and 81 provided with contact pads 82 and 83, which pads must in principle come to bear in a U-shaped metal part 84 .

Lorsque la fourche est à l'état repos, partie gauche de la figure, le plot 82 est en pression donc assure le contact électrique avec la pièce 84.When the fork is in the rest state, left part of the figure, the stud 82 is under pressure therefore ensures electrical contact with the part 84.

Lorsque la fourche est à l'état travail partie droite de la figure, c'est-à-dire qu'un fil conducteur 8 est inséré dans la fente 65, la branche latérale 63 se déplace vers la droite dans le sens de la flèche H en pivotant autour d'un point d'articulation fictif 88 situé à la base de la lumière de dégagement 67. Si le pont 90 n'existait pas, dans son pivotement la branche latérale 63 entraînerait la patte élastique 81, déplaçant ainsi le plot 83 de la pièce métallique 84 et réduisant de ce fait la pression de contact. En supposant la partie gauche de la fourche également en position travail la pression exercée alors par les plots 82 et 83 sur la pièce métallique 84 pourrait devenir nulle provoquant ainsi l'interruption du circuit électrique.When the fork is in the working state on the right-hand side of the figure, that is to say that a conducting wire 8 is inserted in the slot 65, the lateral branch 63 moves to the right in the direction of the arrow H by pivoting around a fictitious articulation point 88 located at the base of the clearance light 67. If the bridge 90 did not exist, in its pivoting the lateral branch 63 would cause the elastic tab 81, thus displacing the stud 83 of the metal part 84 and thereby reducing the contact pressure. Assuming the left part of the fork also in the working position, the pressure then exerted by the studs 82 and 83 on the metal part 84 could become zero, thus causing the interruption of the electrical circuit.

Pour remédier à ce genre de défaut, les pattes élastiques 80 et 81 sont réunies entre elles à l'aide d'un pont 90 qui aura pour rôle de supprimer le mouvement de rotation communiqué par la branche latérale 63 à la patte élastique 81, maintenant de ce fait le plot 83 en contact permanent 85 avec la pièce métallique 84. Bien entendu le-même raisonnement est valable pour la partie- gauche de la fourche lorsque celle-ci est également en position travail. Toute intervention sur la partie fourche sera de ce fait sans répercussion sur la partie contact à pression. Par voie de réciprocité toute intervention sur la partie contact à pression sera sans répercussion sur la partie fourche.To remedy this kind of defect, the elastic tabs 80 and 81 are joined together using a bridge 90 which will have the role of suppressing the rotational movement communicated by the lateral branch 63 to the elastic tab 81, now therefore the stud 83 in permanent contact 85 with the metal part 84. Of course the same reasoning is valid for the left-hand side of the fork when the latter is also in the working position. Any intervention on the fork part will therefore have no repercussions on the pressure contact part. By way of reciprocity, any intervention on the pressure contact part will have no repercussions on the fork part.

Claims (9)

1/ Dispositif de raccordement de conducteurs électriques isolés par connecteur autodénudant comportant une pièce conductrice de connexion du type à fourche ou à pince à au moins deux branches élastiques ménageant entre elles une fente dans laquelle est inséré le conducteur électrique à connecter, la pièce de connexion étant destinée à être introduite dans un alvéole d'un socle en matière isolante, caractérisé par le fait que la pièce de connexion du type à double fourche comporte deux fentes inclinées (64, 65) dont les axes sont convergents vers le sommet du connecteur.1 / Device for connecting insulated electrical conductors by self-stripping connector comprising a conductive connection piece of the fork or clamp type with at least two elastic branches forming between them a slot in which the electrical conductor to be connected is inserted, the connection piece being intended to be introduced into a cell of a base made of insulating material, characterized in that the connection piece of the double fork type has two inclined slots (64, 65) whose axes converge towards the top of the connector. 2/ Dispositif selon la revendication 1, caractérisé par le fait que la pièce de connexion comporte des lumières d'élasticité inclinées (66, 67) dont les axes sont convergents vers la base du connecteur.2 / Device according to claim 1, characterized in that the connection piece comprises inclined elasticity lights (66, 67) whose axes are convergent towards the base of the connector. 3/ Dispositif selon la revendication 1 ou 2, caractérisé par le fait que les fentes à fil et les lumières d'élasticité sont placées sur des axes convergeant respectivement vers un point situé au delà du sommet de la connexion et vers un point situé au delà de la base de la connexion, réduisant ainsi les dimensions d'encombrement de la connexion et principalement les dimensions au sommet.3 / Device according to claim 1 or 2, characterized in that the wire slots and the elasticity slots are placed on axes converging respectively to a point located beyond the top of the connection and to a point located beyond from the base of the connection, thus reducing the overall dimensions of the connection and mainly the dimensions at the top. 4/ Dispositif selon la revendication 1, caractérisé par le fait que les fentes comprennent au moins deux parties d'inclinaisons différentes telles qu'une partie droite (76) et une partie inclinée (64).4 / Device according to claim 1, characterized in that the slots comprise at least two parts of different inclinations such as a straight part (76) and an inclined part (64). 5/ Dispositif selon la revendication 1 ou 2, comportant une pièce de connexion munie d'au moins deux pattes de contact (80, 81) à pression opposées aux branches de la fourche caractérisé par le fait que la pièce de connexion comporte un pont (90) réunissant les deux pattes (80, 81) de façon à empêcher le déplacement de l'extrémité des pattes de contact lors de l'introduction d'un conducteur dans la fourche.5 / Device according to claim 1 or 2, comprising a connection piece provided with at least two contact tabs (80, 81) at pressure opposite the branches of the fork characterized in that the connection piece comprises a bridge ( 90) joining the two legs (80, 81) so as to prevent the displacement of the end of the contact legs during the introduction of a conductor into the fork. 6/ Dispositif selon l'une des revendications précédentes caractérisé par le fait que la pièce de connexion comporte un orifice (14) ménagé dans la branche centrale (2) destiné à s'accrocher dans un téton (13) du support de façon à immobiliser la branche centrale lors de l'introduction d'un fil de connexion dans une des fentes de la pièce de connexion.6 / Device according to one of the preceding claims characterized in that the connection piece comprises an orifice (14) formed in the central branch (2) intended to hang in a stud (13) of the support so as to immobilize the central branch when introducing a connection wire into one of the slots in the connection part. 7/ Dispositif de raccordement par connecteur autodénudant pour conducteurs électriques isolés comportant une pièce conductrice de connexion du type à fourche ou à pince à au moins deux branches élastiques ménageant entre elles une fente dans laquelle est inséré le conducteur électrique à connecter, la pièce de connexion étant destinée à être introduite dans un alvéole d'un socle en matière isolante, caractérisé par le fait que la pièce de connexion comporte au moins un bossage accentué sur le bord interne de l'une des branches de la pièce de connexion, bossage situé entre le fond de la fente et l'ouverture de la fente et destiné d'une part à calibrer l'ouverture de la fente et d'autre part à retenir le conducteur dans la fente après sa mise en place et que le bossage est obtenu par repoussage, matriçage, emboutissage ou autre, exécuté près du bord de ladite fente mais à une certaine distance dudit bord, de façon à ne pas réduire l'épaisseur de la pièce sur son bord.7 / Connection device by self-stripping connector for insulated electrical conductors comprising a conductive connection piece of the fork or clamp type with at least two elastic branches forming between them a slot in which the electrical conductor to be connected is inserted, the connection part being intended to be introduced into a cell of a base made of insulating material, characterized in that the connection part comprises at least one accentuated boss on the internal edge of one of the branches of the connection piece, boss located between the bottom of the slot and the opening of the slot and intended on the one hand to calibrate the opening of the slot and on the other hand retaining the conductor in the slot after its installation and that the boss is obtained by pushing, stamping, stamping or the like, executed near the edge of said slot but at a certain distance from said edge, so as not to reduce the thickness of the part on its edge. 8/ Dispositif selon la revendication 7, caractérisé par le fait que la pièce de connexion comporte deux bossages en vis-à-vis sur les bords de la fente.8 / Device according to claim 7, characterized in that the connection piece comprises two bosses facing each other on the edges of the slot. 9/ Dispositif selon la revendication 7, caractérisé par le fait que le bossage est en forme de harpon, de façon à faciliter l'introduction du conducteur tout en empêchant son extraction.9 / Device according to claim 7, characterized in that the boss is in the form of a harpoon, so as to facilitate the introduction of the conductor while preventing its extraction.
EP80400708A 1979-05-25 1980-05-21 Connecting device for insulated electrical conductors Expired EP0020241B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80400708T ATE6970T1 (en) 1979-05-25 1980-05-21 CONNECTION DEVICE FOR INSULATED ELECTRICAL CONDUCTORS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7913326 1979-05-25
FR7913326A FR2457574A1 (en) 1979-05-25 1979-05-25 DEVICE FOR CONNECTING INSULATED ELECTRICAL CONDUCTORS

Publications (2)

Publication Number Publication Date
EP0020241A1 true EP0020241A1 (en) 1980-12-10
EP0020241B1 EP0020241B1 (en) 1984-04-04

Family

ID=9225863

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80400708A Expired EP0020241B1 (en) 1979-05-25 1980-05-21 Connecting device for insulated electrical conductors

Country Status (8)

Country Link
US (1) US4350405A (en)
EP (1) EP0020241B1 (en)
JP (1) JPS6335072B2 (en)
AT (1) ATE6970T1 (en)
CA (1) CA1145429A (en)
DE (1) DE3067324D1 (en)
FR (1) FR2457574A1 (en)
WO (1) WO1980002775A1 (en)

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US4451867A (en) * 1981-09-28 1984-05-29 Imperial Chemical Industries Plc Electrically actuable ignition assembly
FR2580430A1 (en) * 1985-02-18 1986-10-17 Caris Marcel Electrical connection element
EP0237141A2 (en) * 1986-03-12 1987-09-16 Nortel Networks Corporation Cable terminal connector with insulation displacing terminals
EP0321726A2 (en) * 1987-12-23 1989-06-28 Siemens Aktiengesellschaft Device for connecting two electrical wires to one insulating cutting terminal
WO1991008599A1 (en) * 1989-11-30 1991-06-13 Siemens Aktiengesellschaft Gripping/cutting device for use in connecting individual insulated wires
FR2664433A1 (en) * 1990-07-04 1992-01-10 Nozick Jacques Insulation-displacement contact

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US4421374A (en) * 1980-09-05 1983-12-20 Western Electric Company, Inc. Trifurcated insulation-penetrating terminal
FR2525824A1 (en) * 1982-04-26 1983-10-28 Caris Marcel ELECTRICAL CONNECTION DEVICE
EP0171737B1 (en) * 1984-08-07 1990-12-27 Sumitomo Wiring Systems, Ltd. Electric wire branching connector device
US4638559A (en) * 1984-10-30 1987-01-27 At&T Technologies, Inc. Methods of and apparatus for making slotted beam contact elements
DE3509523C3 (en) * 1985-03-16 1996-07-04 Quante Ag Cable termination unit
US5322812A (en) * 1991-03-20 1994-06-21 Crosspoint Solutions, Inc. Improved method of fabricating antifuses in an integrated circuit device and resulting structure
NL192314C (en) * 1991-05-02 1997-05-07 Du Pont Nederland Connector containing an isolation displacement contact.
US5911593A (en) * 1996-07-29 1999-06-15 Glaser; Lawrence F. Electrical conductor terminal and a method of connecting an electrical conductor to a terminal
GB2375237A (en) * 2001-05-01 2002-11-06 Yu-Ho Liang Terminal connector
US6991488B2 (en) * 2002-09-25 2006-01-31 Anthony Freakes Electrical connector devices and methods for employing same
HUP1400211A2 (en) 2014-04-24 2015-11-30 Jozsef Laszlo Baran Method for manufacturing insulation displacement connector device and insulation displacement connector device

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DE2142850A1 (en) * 1971-08-26 1973-03-08 Krone Gmbh ELECTRICAL CLAMPING DEVICE FOR CONNECTING ONE OR MORE INSULATED WIRES TO A CONNECTOR
FR2271682A1 (en) * 1974-05-16 1975-12-12 Siemens Ag
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DE2541064A1 (en) * 1975-09-15 1977-03-17 Siemens Ag Clamping element for connection of two insulated jumper wires - insulating base with blade or spring contact
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4451867A (en) * 1981-09-28 1984-05-29 Imperial Chemical Industries Plc Electrically actuable ignition assembly
FR2580430A1 (en) * 1985-02-18 1986-10-17 Caris Marcel Electrical connection element
EP0237141A2 (en) * 1986-03-12 1987-09-16 Nortel Networks Corporation Cable terminal connector with insulation displacing terminals
EP0237141A3 (en) * 1986-03-12 1988-08-10 Nortel Networks Corporation Cable terminal connector with insulation displacing terminals
EP0321726A2 (en) * 1987-12-23 1989-06-28 Siemens Aktiengesellschaft Device for connecting two electrical wires to one insulating cutting terminal
EP0321726A3 (en) * 1987-12-23 1990-05-02 Siemens Aktiengesellschaft Device for connecting two electrical wires to one insulating cutting terminal
WO1991008599A1 (en) * 1989-11-30 1991-06-13 Siemens Aktiengesellschaft Gripping/cutting device for use in connecting individual insulated wires
TR24783A (en) * 1989-11-30 1992-05-01 Siemens Ag CUTTING TERMINAL FOR CONNECTING INSULATED CIRCUIT CABLES
FR2664433A1 (en) * 1990-07-04 1992-01-10 Nozick Jacques Insulation-displacement contact

Also Published As

Publication number Publication date
JPS6335072B2 (en) 1988-07-13
JPS56500591A (en) 1981-04-30
FR2457574A1 (en) 1980-12-19
ATE6970T1 (en) 1984-04-15
EP0020241B1 (en) 1984-04-04
FR2457574B1 (en) 1982-12-03
WO1980002775A1 (en) 1980-12-11
CA1145429A (en) 1983-04-26
DE3067324D1 (en) 1984-05-10
US4350405A (en) 1982-09-21

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