EP0299872B1 - Connector for shielded flat cable - Google Patents

Connector for shielded flat cable Download PDF

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Publication number
EP0299872B1
EP0299872B1 EP88401832A EP88401832A EP0299872B1 EP 0299872 B1 EP0299872 B1 EP 0299872B1 EP 88401832 A EP88401832 A EP 88401832A EP 88401832 A EP88401832 A EP 88401832A EP 0299872 B1 EP0299872 B1 EP 0299872B1
Authority
EP
European Patent Office
Prior art keywords
plug
cable
socket
cap
conducting
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.)
Expired - Lifetime
Application number
EP88401832A
Other languages
German (de)
French (fr)
Other versions
EP0299872A1 (en
Inventor
Alain Marie
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.)
Generale Pour L'industrie Electronique (sogie) SA Ste
Original Assignee
Generale Pour L'industrie Electronique (sogie) SA Ste
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
Application filed by Generale Pour L'industrie Electronique (sogie) SA Ste filed Critical Generale Pour L'industrie Electronique (sogie) SA Ste
Publication of EP0299872A1 publication Critical patent/EP0299872A1/en
Application granted granted Critical
Publication of EP0299872B1 publication Critical patent/EP0299872B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6581—Shield structure
    • H01R13/6582—Shield structure with resilient means for engaging mating connector
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/77—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/771—Details
    • H01R12/775—Ground or shield arrangements

Definitions

  • Such cables can be used in many applications where it is necessary to ensure effective shielding of the conductors of a cable against the external environment, as much to avoid disturbing the external environment by parasitic signals in from the cable only to protect the cable conductors from extraneous signals from the outside.
  • Such shielded cables must naturally be able to be connected to structural elements such as for example printed circuits and the present invention specifically relates to a connector for ensuring such a connection.
  • a connector comprising a plug and a receptacle capable of being joined by locking means, the plug comprising an insulating body provided with recesses for receiving and retaining the cable conductors, a cover hood whose inner wall at least is conductive surrounding said body, recesses being provided between said cover and the plug body for receiving the conductive sheets forming the ground plane of said cable.
  • the connector according to the invention is essentially characterized by the fact that the base includes an insulating body capable of being engaged in the plug and comprising contacts capable of coming into contact with the conductors of the cable housed in said plug, said base body comprising over at least part of its length a conductive envelope capable of coming into contact with the inner wall of the cover of the plug body.
  • the ends of the plies forming the ground plane of the cable housed in the plug are folded back on themselves, the elastic support being effected in the folded area.
  • FIGS. 2 to 5 illustrate a connector according to the invention intended to receive a flat cable with two rows of conductive tapes such as that of FIG. 1.
  • the connector consists of a plug generally designated by 6 (Figure 2) and a socket 7 illustrated in Figure 3.
  • the base 7 illustrated in FIG. 3 comprises an insulating body 19 capable of being engaged in the recesses 13 of the plug body and containing contacts 20 capable of coming, as illustrated in FIG. 3, in contact with the conductors 3 of the cable .
  • the base body 19 comprises at least on its main faces and over a part of its height, from the free end of the contacts 20, a conductive casing 21 fixed on projections 22 of the body 19, the casing 21 having cut tabs 23 projecting outwards and capable of being pressed elastically against the internal wall 10 of the cover of the plug when the latter is engaged on the base as illustrated in FIG. 4.
  • the immobilization of the connector elements is ensured by snap-fastening, as can be seen in FIG. 5, by engagement of pawls 24 projecting externally from the cover 9 of the plug in the holes 25 provided for this purpose in the wall of the base.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)

Description

La présente invention est relative à un connecteur pour câble plat blindé, c'est-à-dire, un câble de section rectangulaire aplatie comportant dans une matrice isolante une pluralité de rubans conducteurs de section aplatie disposés parallèlement en une ou plusieurs rangées entre deux nappes conductrices formant plans de masse et s'étendant sur la majeure partie de la largeur du câble.The present invention relates to a connector for shielded flat cable, that is to say, a cable of flattened rectangular section comprising in an insulating matrix a plurality of conductive tapes of flattened section arranged in parallel in one or more rows between two layers. conductive forming ground planes and extending over most of the width of the cable.

De tels câbles sont utilisables dans de nombreuses applications où il est nécessaire d'assurer un blindage efficace des conducteurs d'un câble vis-à-vis de l'environnement extérieur, tant pour éviter de perturber l'environnement extérieur par des signaux parasites en provenance du câble que pour protéger les conducteurs du câble de signaux parasites en provenance de l'extérieur.Such cables can be used in many applications where it is necessary to ensure effective shielding of the conductors of a cable against the external environment, as much to avoid disturbing the external environment by parasitic signals in from the cable only to protect the cable conductors from extraneous signals from the outside.

De tels câbles blindés doivent naturellement pouvoir être raccordés à des éléments de structures tels que par exemple des circuits imprimés et la présente invention a précisément pour objet un connecteur permettant d'assurer un tel raccordement.Such shielded cables must naturally be able to be connected to structural elements such as for example printed circuits and the present invention specifically relates to a connector for ensuring such a connection.

On connaît d'après US-A-4 619 487 un connecteur comprenant une fiche et une embase aptes à être réunies par des moyens de verrouillage, la fiche comportant un corps isolant muni d'évidements de réception et de retenue des conducteurs du câble, un capot de recouvrement dont la paroi intérieure au moins est conductrice entourant ledit corps, des évidements étant prévus entre ledit capot et le corps de fiche pour la réception des nappes conductrices formant plan de masse dudit câble.Known from US-A-4 619 487 a connector comprising a plug and a receptacle capable of being joined by locking means, the plug comprising an insulating body provided with recesses for receiving and retaining the cable conductors, a cover hood whose inner wall at least is conductive surrounding said body, recesses being provided between said cover and the plug body for receiving the conductive sheets forming the ground plane of said cable.

La présente invention se propose de réaliser un connecteur de ce type permettant d'assurer une continuité de l'effet de blindage entre le câble et la structure à raccorder, en particulier au niveau de l'embase du connecteur.The present invention proposes to produce a connector of this type making it possible to ensure continuity of the shielding effect between the cable and the structure to be connected, in particular at the level of the connector base.

A cet effet, le connecteur selon l'invention se caractérise essentiellement par le fait que l'embase comporte un corps isolant apte à être engagé dans la fiche et comportant des contacts aptes à venir en contact avec les conducteurs du câble logés dans ladite fiche, ledit corps d'embase comportant sur au moins une partie de sa longueur une enveloppe conductrice apte à venir au contact de la paroi intérieure du capot du corps de fiche.To this end, the connector according to the invention is essentially characterized by the fact that the base includes an insulating body capable of being engaged in the plug and comprising contacts capable of coming into contact with the conductors of the cable housed in said plug, said base body comprising over at least part of its length a conductive envelope capable of coming into contact with the inner wall of the cover of the plug body.

On comprend qu'en position assemblée, on réalise une continuité de blindage entre les nappes conductrices du câble, la paroi intérieure conductrice du capot de la fiche et l'enveloppe conductrice de l'embase jusqu'à la structure, telle qu'une carte de circuit imprimé dans laquelle sont engagées les extrémités libres des contacts intérieurs de l'embase.It is understood that in the assembled position, a shielding continuity is produced between the conductive layers of the cable, the conductive inner wall of the cover of the plug and the conductive envelope of the socket to the structure, such as a card circuit board in which are engaged the free ends of the interior contacts of the base.

De manière à accroître le contact entre les nappes conductrices du câble et la paroi intérieure du capot de la fiche, il est avantageux de prévoir des moyens élastiques, tels que des ressorts à lame ou des pièces d'appui en élastomère, logés dans les cavités du corps de fiche et pressant les nappes formant plans de masse du câble contre la paroi intérieure conductrice du capot.In order to increase the contact between the conductive layers of the cable and the inner wall of the cover of the plug, it is advantageous to provide elastic means, such as leaf springs or elastomer support parts, housed in the cavities plug body and pressing the plies forming ground planes of the cable against the conductive inner wall of the cover.

De préférence, les extrémités des nappes formant plan de masse du câble logé dans la fiche sont repliées sur elles-mêmes, l'appui élastique s'effectuant dans la zone repliée.Preferably, the ends of the plies forming the ground plane of the cable housed in the plug are folded back on themselves, the elastic support being effected in the folded area.

De manière à favoriser le contact entre l'enveloppe conductrice de blindage de l'embase contre la paroi intérieure du capot de la fiche, l'enveloppe peut avantageusement présenter une ou plusieurs parties en saillie telles que des pattes découpées dans l'enveloppe et qui se trouvent comprimées lors de l'engagement de la fiche sur l'embase.In order to favor the contact between the conductive shielding envelope of the base against the interior wall of the cover of the plug, the envelope can advantageously have one or more projecting parts such as tabs cut out of the envelope and which are compressed when the plug is engaged on the base.

Des éléments d'appui élastiques, tels que des ressorts à lame peuvent également être avantageusement prévus dans le corps de fiche pour presser élastiquement les conducteurs du câble maintenus dans le corps de fiche contre les contacts de l'embase lorsque la fiche est engagée sur l'embase pour former le connecteur.Elastic support elements, such as leaf springs may also advantageously be provided in the plug body for resiliently pressing the cable conductors held in the plug body against the contacts of the base when the plug is engaged on the 'base to form the connector.

Dans le but de mieux faire comprendre l'invention on va maintenant décrire à titre d'exemple nullement limitatif, un mode de réalisation en se référant au dessin annexé dans lequel :

  • la figure 1 illustre en coupe transversale un type de câble auquel est destiné le connecteur selon l'invention,
  • la figure 2 est une vue en coupe transversale d'une fiche de connecteur selon l'invention dans laquelle est mis en place un câble,
  • la figure 3 est une vue latérale en coupe d'une embase de connecteur selon l'invention,
  • la figure 4 est une vue en coupe latérale d'un connecteur selon l'invention monté sur une carte de circuit imprimé,
  • la figure 5 est une vue en élévation frontale et en coupe d'un connecteur selon l'invention.
In order to better understand the invention, an embodiment will now be described, in no way limiting, with reference to the appended drawing in which:
  • FIG. 1 illustrates in cross section a type of cable for which the connector according to the invention is intended,
  • FIG. 2 is a cross-sectional view of a connector plug according to the invention in which a cable is put in place,
  • FIG. 3 is a side view in section of a connector socket according to the invention,
  • FIG. 4 is a side section view of a connector according to the invention mounted on a printed circuit board,
  • Figure 5 is a front elevational view in section of a connector according to the invention.

On a illustré sur la figure 1 un câble plat utilisable dans le cadre de l'invention.Is illustrated in Figure 1 a flat cable usable in the context of the invention.

Ce câble désigné globalement par 1 comprend dans une matrice isolante 2 des rubans conducteurs de section aplatie 3, au nombre de quatorze dans l'exemple illustré, disposés en deux rangées entre deux nappes conductrices de blindage 4, 5 qui s'étendent pratiquement sur toute la largeur du câble.This cable generally designated by 1 comprises in an insulating matrix 2 conductive tapes of flattened section 3, fourteen in number in the example illustrated, arranged in two rows between two conductive shielding plies 4, 5 which extend practically over any the width of the cable.

On se réfère maintenant aux figures 2 à 5 qui illustrent un connecteur selon l'invention destiné à recevoir un câble plat à deux rangées de rubans conducteurs tel que celui de la figure 1.Reference is now made to FIGS. 2 to 5 which illustrate a connector according to the invention intended to receive a flat cable with two rows of conductive tapes such as that of FIG. 1.

Le connecteur se compose d'une fiche désignée globalement par 6 (figure 2) et d'une embase 7 illustrée à la figure 3.The connector consists of a plug generally designated by 6 (Figure 2) and a socket 7 illustrated in Figure 3.

La fiche 6 comporte un corps isolant 8 destiné à recevoir les rubans conducteurs 3 du câble, le corps 8 étant recouvert par un capot 9, conducteur ou de préférence réalisé en une matière plastique munie sur sa paroi intérieure 10 d'un revêtement métallique.The plug 6 comprises an insulating body 8 intended to receive the conductive tapes 3 of the cable, the body 8 being covered by a cover 9, conductive or preferably made of a plastic material provided on its inner wall 10 with a metallic coating.

Comme on le voit sur les figures 2 et 4, le câble est introduit par une ouverture d'extrémité 11 du capot de la fiche et sa matrice isolante est sectionnée parallèlement aux faces principales du câble de manière à séparer les nappes de blindage 4 et 5 et les conducteurs 3. Les conducteurs 3 qui, comme on le voit sur la figure 3 sont dénudés sur une partie de leur longueur, pénètrent dans le corps de la fiche puis sont repliés à partir d'une zone de rebroussement d'une paroi 12 du corps isolant du conducteur, la partie dénudée s'étendant dans un évidement 13 réalisé entre la paroi 12 et la paroi intérieure 10 du capot, l'extrémité non dénudée des conducteurs 3 étant engagée dans des évidements en forme de fente 14 du corps du capot. Les parties dénudées des conducteurs 3 sont repoussées vers l'extérieur par des ressorts à lame 15 s'appuyant sur les parois 12.As seen in Figures 2 and 4, the cable is introduced through an end opening 11 of the cover of the plug and its insulating matrix is sectioned parallel to the main faces of the cable so as to separate the shielding plies 4 and 5 and the conductors 3. The conductors 3 which, as can be seen in FIG. 3, are stripped over part of their length, penetrate the body of the plug and are then folded back from a cusp of a wall 12 of the insulating body of the conductor, the stripped part extending in a recess 13 produced between the wall 12 and the inner wall 10 of the cover, the non-stripped end of the conductors 3 being engaged in recesses in the form of a slot 14 in the body of the hood. The stripped parts of the conductors 3 are pushed outwards by leaf springs 15 bearing on the walls 12.

Les nappes de blindage 4 et 5 du câble non dénudées sur l'une de leurs faces sont introduites dans l'orifice 11 du capot dans un évidement 16 de section sensiblement en forme de L ménagé entre le capot et le corps 8 de la fiche, l'extrémité de chacune des nappes 4 et 5 étant repliée sur elle-même à partir d'une zone de rebroussement. Pour assurer un appui élastique de chacune des nappes conductrices 4, 5 contre la paroi intérieure conductrice 10 du capot, il est prévu des organes élastiques tels que des ressorts à lame 17 ou des pièces d'appui en élastomère 18 logés dans des cavités du corps de fiche.The shielding plies 4 and 5 of the non-stripped cable on one of their faces are introduced into the orifice 11 of the cover in a recess 16 of substantially L-shaped section formed between the cover and the body 8 of the plug, the end of each of the layers 4 and 5 being folded back on itself from a cusp. To provide elastic support for each of the conductive layers 4, 5 against the interior conductive wall 10 of the cover, elastic members are provided such as leaf springs 17 or elastomer support parts 18 housed in body cavities of sheet.

L'embase 7 illustrée à la figure 3 comporte un corps isolant 19 apte à être engagé dans les évidements 13 du corps de fiche et contenant des contacts 20 aptes à venir, comme illustré sur la figure 3, en contact avec les conducteurs 3 du câble.The base 7 illustrated in FIG. 3 comprises an insulating body 19 capable of being engaged in the recesses 13 of the plug body and containing contacts 20 capable of coming, as illustrated in FIG. 3, in contact with the conductors 3 of the cable .

Le corps d'embase 19 comporte au moins sur ses faces principales et sur une partie de sa hauteur, à partir de l'extrémité libre des contacts 20, une enveloppe conductrice 21 fixée sur des saillies 22 du corps 19, l'enveloppe 21 présentant des pattes découpées 23 faisant saillie vers l'extérieur et aptes à être pressées élastiquement contre la paroi intérieure 10 du capot de la fiche lorsque cette dernière est engagée sur l'embase comme illustrée à la figure 4.The base body 19 comprises at least on its main faces and over a part of its height, from the free end of the contacts 20, a conductive casing 21 fixed on projections 22 of the body 19, the casing 21 having cut tabs 23 projecting outwards and capable of being pressed elastically against the internal wall 10 of the cover of the plug when the latter is engaged on the base as illustrated in FIG. 4.

L'immobilisation des éléments de connecteur est assurée par encliquetage, comme on le voit sur la figure 5, par engagement de cliquets 24 en saillie extérieurement du capot 9 de la fiche dans des orifices 25 prévus à cet effet dans la paroi de l'embase.The immobilization of the connector elements is ensured by snap-fastening, as can be seen in FIG. 5, by engagement of pawls 24 projecting externally from the cover 9 of the plug in the holes 25 provided for this purpose in the wall of the base.

Comme on s'en rend le mieux compte à l'examen de la figure 4 qui illustre la connexion d'un câble tel que celui de la figure 1 à une carte de circuit imprimé C par l'intermédiaire d'un connecteur selon l'invention réalisé par assemblage d'une embase selon la figure 3 et d'une fiche selon la figure 2, on obtient une continuité électrique de plans de masse entre le câble et la carte de circuit imprimé assurant un parfait blindage vis-à-vis de l'extérieur. En effet, les nappes 4 et 5 du câble sont en contact avec la paroi intérieure conductrice 10 du capot, puis la continuité de plan de masse est assurée par l'intermédiaire de l'enveloppe conductrice 21 de l'embase dont les extrémités 21' sont comme on le voit sur la figure 4 enfichées dans la carte de circuit imprimé C.As is best seen on examining FIG. 4 which illustrates the connection of a cable such as that of FIG. 1 to a printed circuit board C via a connector according to the invention produced by assembling a base according to FIG. 3 and a plug according to FIG. 2, an electrical continuity of ground planes is obtained between the cable and the printed circuit board ensuring perfect shielding with respect to outside. Indeed, the plies 4 and 5 of the cable are in contact with the conductive inner wall 10 of the cover, then the continuity of the ground plane is ensured by means of the conductive envelope 21 of the base, the ends 21 ' are as seen in Figure 4 plugged into the printed circuit board C.

Bien que l'invention ait été décrite en liaison avec un mode de réalisation particulier, il est bien évident qu'elle n'y ait nullement limitée, et qu'on peut lui apporter de nombreuses variantes et modifications sans pour autant sortir ni de son cadre ni de son esprit.Although the invention has been described in connection with a particular embodiment, it is obvious that it is in no way limited thereto, and that it can be brought to many variations and modifications without departing from its scope. frame neither of his mind.

Claims (4)

  1. Connector for shielded flat cable, comprising a plug (6) and a socket (7), adapted to be connected together by locking means (24, 25), the plug possessing an insulating body (8) provided with cavities (13, 14) for receiving and holding the conductor strips (3) of the cable (1), a covering cap (9), of which the inside wall (10) at least is conducting, surrounding said body (8), cavities (16) being provided between said cap (9) and said body (8) for retaining the conducting layers forming earth planes (4, 5) of the cable, the socket (7) possessing a body (19) adapted to be engaged into said plug, characterized by the fact that the body (19) is insulating and that the socket comprises contacts (20) adapted for coming into contact with the conductor strips of the cable housed in said plug, said socket body (19) comprising, over at least a portion of its length, a conducting envelope (21) adapted for coming into contact with the internal wall face (10) of the cap covering the plug body.
  2. Connector according to Claim 1, characterized by the fact that it comprises elastic means, such as strip springs (17) or bearing pieces of elastomer (18), housed in cavities of the plug body (8) and pressing the layers (4, 5) forming earth planes of the cable against the internal conducting wall face (10) of the cap.
  3. Connector according to Claim 2, characterized by the fact that the ends of the layers (4, 5) forming earth planes of the cable (1) housed in the plug are folded back onto themselves, the elastic bearing taking place in the folded zone.
  4. Connector according to any one of the preceding Claims, characterized by the fact that the envelope (21) of the socket body has at least one or several projecting parts, such as lugs (23) cut out from its envelope, which become compressed during the engagement of the plug onto the socket in order to increase the contact between the conducting envelope (21) of the socket and the internal wall face (10) of the cap of the plug.
EP88401832A 1987-07-16 1988-07-13 Connector for shielded flat cable Expired - Lifetime EP0299872B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8710070A FR2618263B1 (en) 1987-07-16 1987-07-16 CONNECTOR FOR ARMORED FLAT CABLE.
FR8710070 1987-07-16

Publications (2)

Publication Number Publication Date
EP0299872A1 EP0299872A1 (en) 1989-01-18
EP0299872B1 true EP0299872B1 (en) 1993-02-17

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Application Number Title Priority Date Filing Date
EP88401832A Expired - Lifetime EP0299872B1 (en) 1987-07-16 1988-07-13 Connector for shielded flat cable

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EP (1) EP0299872B1 (en)
DE (1) DE3878496T2 (en)
FR (1) FR2618263B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5110306A (en) * 1991-07-24 1992-05-05 W. L. Gore & Associates, Inc. Compact connector assembly and termination guide therefor
HUT68195A (en) * 1993-09-14 1995-05-29 Gaertner Karl Telegaertner Connecting box and connecting cable for forming connecting device for a data network

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4345811A (en) * 1980-03-27 1982-08-24 Burroughs Corporation Flat ribbon cable shield
US4619487A (en) * 1984-09-28 1986-10-28 Thomas & Betts Corporation Flat cable connector with grounding clip

Also Published As

Publication number Publication date
FR2618263B1 (en) 1989-12-01
DE3878496T2 (en) 1993-09-02
FR2618263A1 (en) 1989-01-20
EP0299872A1 (en) 1989-01-18
DE3878496D1 (en) 1993-03-25

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