EP2011196B1 - Connector for highbandwidth connection and electronic card equipped with same - Google Patents

Connector for highbandwidth connection and electronic card equipped with same Download PDF

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Publication number
EP2011196B1
EP2011196B1 EP07731918.4A EP07731918A EP2011196B1 EP 2011196 B1 EP2011196 B1 EP 2011196B1 EP 07731918 A EP07731918 A EP 07731918A EP 2011196 B1 EP2011196 B1 EP 2011196B1
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EP
European Patent Office
Prior art keywords
connector
printed circuit
cables
sleeve
electronic card
Prior art date
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Active
Application number
EP07731918.4A
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German (de)
French (fr)
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EP2011196A1 (en
Inventor
Stéphane HERMANT
Gilles Rouchaud
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Axon Cable SA
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Axon Cable SA
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Publication of EP2011196A1 publication Critical patent/EP2011196A1/en
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Publication of EP2011196B1 publication Critical patent/EP2011196B1/en
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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
    • 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
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/722—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits
    • H01R12/725—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits containing contact members presenting a contact carrying strip, e.g. edge-like strip
    • 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
    • H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
    • H01R13/6473—Impedance matching
    • 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]
    • H01R13/6591—Specific features or arrangements of connection of shield to conductive members
    • H01R13/6592—Specific features or arrangements of connection of shield to conductive members the conductive member being a shielded cable
    • 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
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6658—Structural association with built-in electrical component with built-in electronic circuit on printed circuit board
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
    • H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
    • H01R24/50—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency mounted on a PCB [Printed Circuit Board]

Definitions

  • the invention relates to a connector adapted for use in a connection for high-speed digital signals and designed to provide a minimum of disturbance to the transferred signals.
  • the invention more particularly relates to a connector adapted to be directly mounted on a printed circuit board comprising means for processing such signals transmitted via said connector.
  • the invention also relates to such an electronic card provided with at least one connector of this type.
  • connectors must be designed not to alter the quality of the signals transmitted.
  • An advantageous solution is to mount one of the connectors directly on the card.
  • such a connector must be designed to provide good protection against external electromagnetic disturbances and to modify as little as possible the predetermined constant impedance of the transmission lines generally used at such rates.
  • the shielded cables used for these high-speed links have a constant, characteristic impedance.
  • the connector must be designed so that this impedance does not vary significantly at the connection. In other words, the transition between the connector and the printed circuit must be impedance matched.
  • US 2004/029406 discloses a coaxial connector capable of being mounted on a printed circuit board with two coaxial conductors.
  • the invention achieves the objectives mentioned above.
  • connection cables are constituted by two separate shielded cables, with a coaxial structure, each comprising a central core connected to a corresponding pin and a braid connected to said metal casing.
  • the type of connector defined above can advantageously be obtained by appropriate modification of a connector complying with MIL DTL 83513.
  • This standard defines a type of connector known in the art as the "micro-D”.
  • the keying is obtained by the D-shape of the metal sleeve of the connector housing, housing the pins.
  • the connector described above particularly designed to be directly mounted on a printed circuit cooperates with a similar connector connected to a shielded two-wire transmission line, which will not be described in detail here.
  • the housing comprises a metal wall, on the opposite side to said sleeve and where each braid is connected, for example welded to this wall.
  • Said wall may be a metal plate (a simple copper strip) attached to the rest of the metal housing housing the two pins and the insulating insert. The metal wall then has two holes for the passage of the connecting cables.
  • the shielded cables are of the semi-rigid type; they are therefore conformable at will.
  • a cable can be constituted, typically a central core consisting of a single rigid but foldable arm, surrounded by a flexible braid.
  • said metal case may be attached to a support of insulating material comprising the aforementioned mounting means.
  • the connection cables can then be immobilized in this support, for example by means of a resin molded into a cavity thereof.
  • the invention also relates to a high-speed signal processing electronic card, characterized in that it comprises at least one connector according to the above definition, fixed on it and whose connection cables are connected, for example soldered, to conductors of said printed circuit.
  • the figure 1 illustrates an example of connection between two printed circuits, a high-speed two-wire link.
  • the printed circuit 12 carries an active component 12A (for example an integrated circuit called "router") which must be connected to another analogous active component 13A carried by a printed circuit 13.
  • a connector 15 of the "base” type, in accordance with FIG. invention is mounted on each printed circuit 12, 13.
  • Each connector 15 is adapted to cooperate with a corresponding connector 17, of the "plug” type to which is connected a wired connection adapted 19, for example consisting of a pair of shielded son, differential characteristic impedance of 100 ohms.
  • connection between the connector 15 and the active component is made by printed circuit conductors, namely here by two parallel lines 18 spaced a predetermined distance and a ground plane to maintain the Differential impedance of 100 ohms.
  • the output of the connector 15 is preferably made by two shielded connection cables 20, with a coaxial structure ( figure 2 ) characteristic impedance equal to half of that previously mentioned, each comprising a central core 21 and a braid 22.
  • the core and the braid are separated by a coaxial sleeve 23 of insulating material.
  • such a central core 21 is welded to one of the parallel lines 18 and the braid is welded to the same conductor 25 of the printed circuit, forming a mass.
  • This located in the vicinity of the connection points between said cores 21 and the two conductors forming said parallel lines 18, is itself connected to another ground plane 26 on the other side of the printed circuit.
  • said ground conductor and said two conductors forming said parallel lines 18 are on the same face of the circuit board 12 or 13.
  • the ground conductor 25 is defined on one side of the printed circuit 12 on which the connector 15 is located while the two conductors forming the parallel lines 18 are defined on the other side.
  • the cores 21 of said connecting cables pass through the printed circuit by passing through holes 24 made for this purpose and are connected to said two conductors 18 on the other side of the printed circuit, here by welding.
  • the braids 22 of the two coaxial cables are welded to the conductor 25 forming a mass defined on the face of the printed circuit which carries the connector 15. The braid does not pass through the printed circuit.
  • the core and the coaxial insulation that separates it from the braid are the only parts of the cable that engage the hole 24.
  • the insert 31 has only two pins 29 to which are connected the central cores 21 of the cables 20.
  • the male pins 29 are fully integrated in the corresponding insert and each extends axially in a hole 36 of this insert. The diameter of this hole is just sufficient to accommodate the corresponding female pin 39 of the connector 17.
  • each cable is connected to the housing.
  • said housing comprises a metal wall 40 (a kind of copper strip) plated on one face of the base 34, on the opposite side to said sleeve 35. Where each braid 22 is connected, for example welded, to this wall .
  • the connector before mounting on the printed circuit, the connector comprises two connecting cables 20 as described, consisting of two shielded cables coaxial structure, each having a central core connected to a corresponding pin and a braid connected to said metal housing.
  • the connecting cables 20 are of the semi-rigid type and are therefore conformable. This allows to consider different types of connection to the printed circuit as described above with reference to figures 5 and 6 , respectively.
  • the aforementioned metal housing 33 is associated (here fixed) with mounting means for its own mechanical fixing on the printed circuit 12 or 13.
  • said metal housing is fixed to a support 44 made of insulating material comprising the aforementioned mounting.
  • the support 44 has a rear wall 47, two walls lateral 49 and two mounting wings 51 coplanar extending the side walls inward, for assembly.
  • the portions of the two connecting cables 20 passing through the support 44 are immobilized therein, preferably by means of a resin 45 molded in a cavity 46 of said support.
  • Each of the cables 20 leaves the connector through a hole 48 formed in the rear wall 47 of said support.
  • the spacing of these holes and the spacing of the connection cables in the support is a function of the spacing of the conductors forming said parallel lines 18 of the printed circuit to which they are intended to be connected.
  • the support 44 comprises two chimneys 54 allowing the passage of two fixing screws 55 for mounting the connector on the printed circuit.
  • Two internally threaded pins 58 protrude from the base of the metal housing 33 at the front of the connector, on either side of the sleeve, for fixing the other connector 17. Threaded portions 59 of these balancers engage with each other. holes 60 of the base and through holes 61 of the metal wall before engaging in the support of insulating material.
  • the mounting flanges are pierced with two holes 64 and the threaded portions of the columns pass through these holes and cooperate with nuts 65 bearing on the inner faces of said mounting flanges 51.
  • the nuts are held captive by internal ribs 66 of the support. It is therefore the mounting of the posts 58, thanks to the nuts 65, which ensures the assembly of all the elements of the connector, including the metal wall 40 interposed between the metal housing and the support 44 of plastic.
  • the support 44 also has a bottom 70. It is therefore easy, after assembly of the elements by means of said posts, to cast the resin 45 hardenable in said support which stabilizes the cables inside thereof and immobilizes the nuts 65
  • the sleeve 35 of the metal case has a keying contour similar to that of the sleeve 38 of the corresponding connector 17. In the example specifically described, this contour has a shape of D, known per se.
  • One of the connectors comprises a said metal sleeve said outer sleeve (here it is the sleeve 38 of the connector 17) larger section than that of the sleeve 35 (said inner sleeve of the connector 15), so as to slide along of the latter at the time of the coupling of the two connectors. This is illustrated particularly by Figures 4 and 5 .
  • the outer sleeve has a sufficient length so that its free end 75 comes into electrical contact with a base 34 of the connector comprising the inner sleeve. It should be noted that, with regard to the MIL DTL 83513 standard defining the general architecture of a "micro-D" connector, it does not favor this end electrical contact.
  • the female pins 39 of the connector 17 project from the insert which holds them in an open cavity delimited by the sleeve 38 which surrounds them, the latter being the outer sleeve.
  • the embodiment as illustrated is currently preferred, but a reverse structure in which the male pins 29 would protrude from the corresponding insert and the female pins 39 would be fully integrated into their own insert could be perfectly conceived.
  • the male pins could be housed in an outer sleeve and the female pins could be housed in a so-called inner sleeve.
  • the connector shown is of the one-way type; it has only one sleeve housing an insert and a pair of pins.
  • each sleeve forming part of the same metal housing houses an insert and two pins.
  • the sleeves are arranged side by side and in a single row. In this case, one can provide a longer support fixed to the rear face of the base of the metal case (with the interposition of a metal plate) and housing as many pairs of shielded cables as there are sleeves.

Description

L'invention concerne un connecteur apte à être utilisé dans une liaison pour signaux numériques à haut débit et conçu pour apporter un minimum de perturbations aux signaux transférés. L'invention concerne plus particulièrement un connecteur apte à être directement monté sur une carte électronique à circuit imprimé comprenant des moyens de traitement de tels signaux transmis via ledit connecteur. L'invention concerne aussi une telle carte électronique munie d'au moins un connecteur de ce type.The invention relates to a connector adapted for use in a connection for high-speed digital signals and designed to provide a minimum of disturbance to the transferred signals. The invention more particularly relates to a connector adapted to be directly mounted on a printed circuit board comprising means for processing such signals transmitted via said connector. The invention also relates to such an electronic card provided with at least one connector of this type.

Lorsqu'on désire établir une liaison numérique déconnectable entre deux sous-ensembles électroniques (comme par exemple deux cartes électroniques à circuit imprimé) comportant des composants actifs capables de traiter des informations numériques à haut débit, il est nécessaire d'intercaler entre ces deux sous-ensembles au moins un couple de connecteurs à broches mâles et femelles, respectivement. Ces connecteurs doivent être conçus pour ne pas altérer la qualité des signaux transmis à haut débit. On parle généralement d'informations numériques à haut débit lorsque lesdites informations sont transmises à un rythme de l'ordre de 100 mégabits par seconde ou davantage.When it is desired to establish a disconnectable digital link between two electronic subassemblies (such as for example two electronic printed circuit boards) comprising active components capable of processing high bit rate digital information, it is necessary to insert between these two sub-assemblies. at least one pair of male and female pin connectors, respectively. These connectors must be designed not to alter the quality of the signals transmitted at high speed. Broadband digital information is generally referred to when said information is transmitted at a rate of the order of 100 megabits per second or more.

Ces connecteurs doivent être conçus pour ne pas altérer la qualité des signaux transmis. Une solution avantageuse consiste à monter l'un des connecteurs directement sur la carte. Dans ce cas, un tel connecteur doit être étudié pour assurer une bonne protection vis-à-vis des perturbations électromagnétiques extérieures et pour modifier aussi peu que possible l'impédance constante prédéterminée des lignes de transmission généralement utilisées à de tels débits. On rappelle que les câbles blindés utilisés pour ces liaisons à haut débit présentent une impédance constante, caractéristique. Le connecteur doit donc être étudié pour que cette impédance ne varie pas de façon significative au niveau du raccordement. Autrement dit, la transition entre le connecteur et le circuit imprimé doit être adaptée en impédance.These connectors must be designed not to alter the quality of the signals transmitted. An advantageous solution is to mount one of the connectors directly on the card. In this case, such a connector must be designed to provide good protection against external electromagnetic disturbances and to modify as little as possible the predetermined constant impedance of the transmission lines generally used at such rates. It is recalled that the shielded cables used for these high-speed links have a constant, characteristic impedance. The connector must be designed so that this impedance does not vary significantly at the connection. In other words, the transition between the connector and the printed circuit must be impedance matched.

D'autre part, US 2004/029406 décrit un connecteur coaxial susceptible d'être monté sur une carte électronique à circuit imprimé à deux conducteurs coaxiaux.On the other hand, US 2004/029406 discloses a coaxial connector capable of being mounted on a printed circuit board with two coaxial conductors.

L'invention permet d'atteindre les objectifs mentionnés ci-dessus.The invention achieves the objectives mentioned above.

Plus particulièrement, l'invention concerne un connecteur permettant d'établir une liaison avec au moins une ligne de transmission haut débit bifilaire à impédance constante et apte à être directement monté sur une carte électronique à circuit imprimé, caractérisé en ce qu'il comprend au moins un ensemble comprenant :

  • deux broches parallèles,
  • un insert isolant dans lequel sont montées ces deux broches,
  • un boîtier métallique comprenant un manchon ouvert abritant ledit insert et lesdites deux broches, ledit boîtier comportant ou étant associé à des moyens de montage pour sa fixation sur ladite carte, et
  • deux câbles de raccordement blindés par au moins une tresse extérieure, chaque âme centrale des câbles étant raccordée étant raccordé à une broche et la tresse étant raccordée audit boîtier métallique.
More particularly, the invention relates to a connector making it possible to establish a connection with at least one high-speed two-wire transmission line with constant impedance and able to be directly mounted on an electronic circuit board, characterized in that it comprises at least one set comprising:
  • two parallel pins,
  • an insulating insert in which these two pins are mounted,
  • a metal casing comprising an open sleeve housing said insert and said two pins, said casing comprising or being associated with mounting means for fixing it on said card, and
  • two connection cables shielded by at least one outer braid, each central core of the cables being connected being connected to a pin and the braid being connected to said metal housing.

De préférence, les deux câbles de raccordement sont constitués par deux câbles blindés distincts, à structure coaxiale, comportant chacun une âme centrale raccordée à une broche correspondante et une tresse raccordée audit boîtier métallique.Preferably, the two connection cables are constituted by two separate shielded cables, with a coaxial structure, each comprising a central core connected to a corresponding pin and a braid connected to said metal casing.

Le type de connecteur défini ci-dessus peut avantageusement être obtenu par une modification appropriée d'un connecteur répondant à la norme MIL DTL 83513. Cette norme définit un type de connecteur connu dans la technique sous l'appellation "micro-D".The type of connector defined above can advantageously be obtained by appropriate modification of a connector complying with MIL DTL 83513. This standard defines a type of connector known in the art as the "micro-D".

Notamment, le détrompage est obtenu par la forme en D du manchon métallique du boîtier du connecteur, abritant les broches.In particular, the keying is obtained by the D-shape of the metal sleeve of the connector housing, housing the pins.

Le connecteur décrit ci-dessus, particulièrement conçu pour être directement monté sur un circuit imprimé coopère avec un connecteur semblable raccordé à une ligne de transmission bifilaire blindée, qui ne sera pas décrit en détail ici.The connector described above, particularly designed to be directly mounted on a printed circuit cooperates with a similar connector connected to a shielded two-wire transmission line, which will not be described in detail here.

Avantageusement, le boîtier comporte une paroi métallique, du côté opposé audit manchon et la où chaque tresse est raccordée, par exemple soudée à cette paroi. Ladite paroi peut être une plaque métallique (un simple feuillard de cuivre) fixée au reste du boîtier métallique abritant les deux broches et l'insert isolant. La paroi métallique comporte alors deux trous pour le passage des câbles de raccordement.Advantageously, the housing comprises a metal wall, on the opposite side to said sleeve and where each braid is connected, for example welded to this wall. Said wall may be a metal plate (a simple copper strip) attached to the rest of the metal housing housing the two pins and the insulating insert. The metal wall then has two holes for the passage of the connecting cables.

Avantageusement, les câbles blindés sont du type semi-rigide ; ils sont donc conformables à volonté. Un tel câble peut être constitué, classiquement d'une âme centrale constituée d'un seul bras rigide mais pliable, entouré d'une tresse souple.Advantageously, the shielded cables are of the semi-rigid type; they are therefore conformable at will. Such a cable can be constituted, typically a central core consisting of a single rigid but foldable arm, surrounded by a flexible braid.

Par exemple, ledit boîtier métallique peut être fixé à un support en matériau isolant comportant les moyens de montage précités. Les câbles de raccordement peuvent alors être immobilisés dans ce support, par exemple au moyen d'une résine moulée dans une cavité de celui-ci.For example, said metal case may be attached to a support of insulating material comprising the aforementioned mounting means. The connection cables can then be immobilized in this support, for example by means of a resin molded into a cavity thereof.

L'invention concerne également une carte électronique de traitement de signaux à haut débit, caractérisée en ce qu'elle comporte au moins un connecteur selon la définition qui précède, fixé sur elle et dont les câbles de raccordement sont connectés, par exemple soudés, à des conducteurs dudit circuit imprimé.The invention also relates to a high-speed signal processing electronic card, characterized in that it comprises at least one connector according to the above definition, fixed on it and whose connection cables are connected, for example soldered, to conductors of said printed circuit.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront mieux à la lumière de la description qui va suivre donnée uniquement à titre d'exemple et faite en référence aux dessins annexés dans lesquels :

  • la figure 1 illustre une liaison de signaux numériques à haut débit, établie entre deux cartes électroniques à circuit imprimé et utilisant des connecteurs conformes à l'invention ;
  • la figure 2 est une vue en perspective éclatée d'un connecteur selon l'invention ;
  • la figure 3 illustre le connecteur installé sur une carte à circuit imprimé ;
  • la figure 4 est une vue en coupe du connecteur, installé sur la carte et d'un connecteur semblable, avant leur raccordement ;
  • la figure 5 est une vue analogue à la figure 4, après raccordement ; et
  • la figure 6 est une vue en coupe illustrant une variante de branchement du connecteur sur la carte à circuit imprimé.
The invention will be better understood and other advantages thereof will appear better in the light of the following description given solely by way of example and with reference to the accompanying drawings in which:
  • the figure 1 illustrates a high-speed digital signal link established between two printed circuit boards and using connectors according to the invention;
  • the figure 2 is an exploded perspective view of a connector according to the invention;
  • the figure 3 illustrates the connector installed on a printed circuit board;
  • the figure 4 is a sectional view of the connector, installed on the board and a similar connector, prior to their connection;
  • the figure 5 is a view similar to the figure 4 , after connection; and
  • the figure 6 is a sectional view illustrating a variant of connection of the connector on the printed circuit board.

La figure 1 illustre un exemple de raccordement entre deux circuits imprimés, par une liaison bifilaire à haut débit. Le circuit imprimé 12 porte un composant actif 12A (par exemple un circuit intégré dit "routeur") qui doit être relié à un autre composant actif 13A analogue porté par un circuit imprimé 13. Un connecteur 15 du type "embase", conforme à l'invention est monté sur chaque circuit imprimé 12, 13. Chaque connecteur 15 est apte à coopérer avec un connecteur 17 correspondant, du type "fiche" auquel est raccordée une liaison filaire adaptée 19, par exemple constitué d'une paire de fils blindés, d'impédance caractéristique différentielle de 100 ohms.The figure 1 illustrates an example of connection between two printed circuits, a high-speed two-wire link. The printed circuit 12 carries an active component 12A (for example an integrated circuit called "router") which must be connected to another analogous active component 13A carried by a printed circuit 13. A connector 15 of the "base" type, in accordance with FIG. invention is mounted on each printed circuit 12, 13. Each connector 15 is adapted to cooperate with a corresponding connector 17, of the "plug" type to which is connected a wired connection adapted 19, for example consisting of a pair of shielded son, differential characteristic impedance of 100 ohms.

Sur chaque circuit imprimé 12, 13 la liaison entre le connecteur 15 et le composant actif se fait par des conducteurs de circuit imprimé, à savoir ici par deux lignes parallèles 18 espacées d'une distance prédéterminée et d'un plan de masse pour conserver l'impédance différentielle de 100 ohms. La sortie du connecteur 15 se fait préférentiellement par deux câbles de raccordement blindés 20, à structure coaxiale (figure 2) d'impédance caractéristique égale à la moitié de celle précédemment citée, comportant chacun une âme centrale 21 et une tresse 22. L'âme et la tresse sont séparées par un manchon coaxial 23 en matériau isolant.On each printed circuit 12, 13 the connection between the connector 15 and the active component is made by printed circuit conductors, namely here by two parallel lines 18 spaced a predetermined distance and a ground plane to maintain the Differential impedance of 100 ohms. The output of the connector 15 is preferably made by two shielded connection cables 20, with a coaxial structure ( figure 2 ) characteristic impedance equal to half of that previously mentioned, each comprising a central core 21 and a braid 22. The core and the braid are separated by a coaxial sleeve 23 of insulating material.

Sur le circuit imprimé, une telle âme 21 centrale est soudée à l'une des lignes parallèles 18 et la tresse est soudée à un même conducteur 25 du circuit imprimé, formant masse. Celui-ci, situé au voisinage des points de raccordement entre lesdites âmes 21 et les deux conducteurs formant lesdites lignes parallèles 18, est lui-même raccordé à un autre plan de masse 26 sur l'autre face du circuit imprimé.On the printed circuit, such a central core 21 is welded to one of the parallel lines 18 and the braid is welded to the same conductor 25 of the printed circuit, forming a mass. This, located in the vicinity of the connection points between said cores 21 and the two conductors forming said parallel lines 18, is itself connected to another ground plane 26 on the other side of the printed circuit.

Dans l'exemple des figures 1 à 5, ledit conducteur 25 formant masse et lesdits deux conducteurs formant lesdites lignes parallèles 18 sont sur la même face du circuit imprimé 12 ou 13.In the example of Figures 1 to 5 said ground conductor and said two conductors forming said parallel lines 18 are on the same face of the circuit board 12 or 13.

Dans l'exemple de la figure 6, au contraire, le conducteur 25 formant masse est défini sur une face du circuit imprimé 12 sur laquelle se trouve le connecteur 15 tandis que les deux conducteurs formant les lignes parallèles 18 sont définis sur l'autre face. Dans ce cas, les âmes 21 desdits câbles de raccordement traversent le circuit imprimé en passant au travers de trous 24 pratiqués à cet effet et sont connectées auxdits deux conducteurs 18 sur l'autre face du circuit imprimé, ici par soudure. Les tresses 22 des deux câbles coaxiaux sont soudées sur le conducteur 25 formant masse défini sur la face du circuit imprimé qui porte le connecteur 15. La tresse ne traverse pas le circuit imprimé. L'âme et l'isolant coaxial qui la sépare de la tresse sont les seules parties du câble qui s'engagent dans le trou 24.In the example of the figure 6 instead, the ground conductor 25 is defined on one side of the printed circuit 12 on which the connector 15 is located while the two conductors forming the parallel lines 18 are defined on the other side. In this case, the cores 21 of said connecting cables pass through the printed circuit by passing through holes 24 made for this purpose and are connected to said two conductors 18 on the other side of the printed circuit, here by welding. The braids 22 of the two coaxial cables are welded to the conductor 25 forming a mass defined on the face of the printed circuit which carries the connector 15. The braid does not pass through the printed circuit. The core and the coaxial insulation that separates it from the braid are the only parts of the cable that engage the hole 24.

Le connecteur 15 (figures 2 à 5) destiné à être directement monté sur le circuit imprimé comprend au moins :

  • deux broches 29 parallèles, ici du type mâle (mais qui pourraient être de type femelle) ;
  • un insert isolant 31 dans lequel sont montées les broches ;
  • un boîtier métallique 33 comprenant un socle 34 et un manchon 35 ouvert, abritant ledit insert et lesdites broches ; et
  • deux câbles de raccordement blindés par au moins une tresse extérieure.
The connector 15 ( Figures 2 to 5 ) intended to be directly mounted on the printed circuit comprises at least:
  • two parallel pins 29, here of the male type (but which could be of the female type);
  • an insulating insert 31 in which the pins are mounted;
  • a metal case 33 comprising a base 34 and an open sleeve 35, housing said insert and said pins; and
  • two connection cables shielded by at least one outer braid.

Dans l'exemple, il s'agit des deux câbles 20 à structure coaxiale comportant chacun une tresse 22.In the example, these are the two cables 20 with a coaxial structure each comprising a braid 22.

L'insert 31 n'abrite que deux broches 29 auxquelles sont raccordées les âmes centrales 21 des câbles 20. Les broches mâles 29 sont entièrement intégrées dans l'insert correspondant et chacune s'étend axialement dans un trou 36 de cet insert. Le diamètre de ce trou est juste suffisant pour accueillir la broche femelle 39 correspondante du connecteur 17.The insert 31 has only two pins 29 to which are connected the central cores 21 of the cables 20. The male pins 29 are fully integrated in the corresponding insert and each extends axially in a hole 36 of this insert. The diameter of this hole is just sufficient to accommodate the corresponding female pin 39 of the connector 17.

Les caractéristiques diélectriques de l'insert et l'écartement des broches conditionnent une variation d'impédance caractéristique aussi faible que possible dans le connecteur. De plus, la tresse 22 de chaque câble est raccordée au boîtier. Dans l'exemple, ledit boîtier comporte une paroi métallique 40 (une sorte de feuillard en cuivre) plaquée sur une face du socle 34, du côté opposé audit manchon 35. Là où chaque tresse 22 est raccordée, par exemple soudée, à cette paroi.The dielectric characteristics of the insert and the spacing of the pins condition a characteristic impedance variation as low as possible in the connector. In addition, the braid 22 of each cable is connected to the housing. In the example, said housing comprises a metal wall 40 (a kind of copper strip) plated on one face of the base 34, on the opposite side to said sleeve 35. Where each braid 22 is connected, for example welded, to this wall .

En résumé, avant montage sur le circuit imprimé, le connecteur comporte deux câbles de raccordement 20 tel que décrit, constitués par deux câbles blindés à structure coaxiale, comportant chacun une âme centrale raccordée à une broche correspondante et une tresse raccordée audit boîtier métallique.In summary, before mounting on the printed circuit, the connector comprises two connecting cables 20 as described, consisting of two shielded cables coaxial structure, each having a central core connected to a corresponding pin and a braid connected to said metal housing.

Les câbles de raccordement 20 sont du type semi-rigide et sont par conséquent conformables. Ceci permet d'envisager différents types de raccordement au circuit imprimé comme décrit ci-dessus en référence aux figures 5 et 6, respectivement.The connecting cables 20 are of the semi-rigid type and are therefore conformable. This allows to consider different types of connection to the printed circuit as described above with reference to figures 5 and 6 , respectively.

Le boîtier métallique 33 précité est associé (ici fixé) à des moyens de montage pour sa propre fixation mécanique sur le circuit imprimé 12 ou 13. Dans l'exemple, ledit boîtier métallique est fixé à un support 44 en matériau isolant comportant les moyens de montage précités. Le support 44 comporte une paroi arrière 47, deux parois latérales 49 et deux ailes de montage 51 coplanaires prolongeant les parois latérales vers l'intérieur, pour l'assemblage. Les parties des deux câbles de raccordement 20 traversant le support 44 sont immobilisées dans celui-ci, de préférence au moyen d'une résine 45 moulée dans une cavité 46 dudit support. Chacun des câbles 20 sort du connecteur par un trou 48 pratiqué dans la paroi arrière 47 dudit support.The aforementioned metal housing 33 is associated (here fixed) with mounting means for its own mechanical fixing on the printed circuit 12 or 13. In the example, said metal housing is fixed to a support 44 made of insulating material comprising the aforementioned mounting. The support 44 has a rear wall 47, two walls lateral 49 and two mounting wings 51 coplanar extending the side walls inward, for assembly. The portions of the two connecting cables 20 passing through the support 44 are immobilized therein, preferably by means of a resin 45 molded in a cavity 46 of said support. Each of the cables 20 leaves the connector through a hole 48 formed in the rear wall 47 of said support.

L'écartement de ces trous ainsi que l'écartement des câbles de raccordement dans le support est fonction de l'écartement des conducteurs formant lesdites lignes parallèles 18 du circuit imprimé auxquels ils sont destinés à être connectés.The spacing of these holes and the spacing of the connection cables in the support is a function of the spacing of the conductors forming said parallel lines 18 of the printed circuit to which they are intended to be connected.

Le support 44 comporte deux cheminées 54 permettant le passage de deux vis de fixation 55 pour le montage du connecteur sur le circuit imprimé. Deux colonnettes 58 taraudées intérieurement font saillie du socle du boîtier métallique 33 à l'avant du connecteur, de part et d'autre du manchon, pour la fixation de l'autre connecteur 17. Des portions filetées 59 de ces colonnettes s'engagent dans des trous 60 du socle et traversent des trous 61 de la paroi métallique avant de s'engager dans le support en matériau isolant. Les ailes de montage sont percées de deux trous 64 et les portions filetées des colonnettes traversent ces trous et coopèrent avec des écrous 65 prenant appui sur les faces internes desdites ailes de montage 51. Les écrous sont maintenus captifs par des nervures intérieures 66 du support. C'est donc le montage des colonnettes 58, grâce aux écrous 65, qui assure l'assemblage de tous les éléments du connecteur, y compris la paroi métallique 40 intercalée entre le boîtier métallique et le support 44 en matière plastique.The support 44 comprises two chimneys 54 allowing the passage of two fixing screws 55 for mounting the connector on the printed circuit. Two internally threaded pins 58 protrude from the base of the metal housing 33 at the front of the connector, on either side of the sleeve, for fixing the other connector 17. Threaded portions 59 of these balancers engage with each other. holes 60 of the base and through holes 61 of the metal wall before engaging in the support of insulating material. The mounting flanges are pierced with two holes 64 and the threaded portions of the columns pass through these holes and cooperate with nuts 65 bearing on the inner faces of said mounting flanges 51. The nuts are held captive by internal ribs 66 of the support. It is therefore the mounting of the posts 58, thanks to the nuts 65, which ensures the assembly of all the elements of the connector, including the metal wall 40 interposed between the metal housing and the support 44 of plastic.

Le support 44 comporte aussi un fond 70. Il est donc aisé, après assemblage des éléments au moyen desdites colonnettes, de couler la résine 45 durcissable dans ledit support ce qui stabilise les câbles à l'intérieur de celui-ci et immobilise les écrous 65. Le manchon 35 du boîtier métallique a un contour de détrompage semblable à celui du manchon 38 du connecteur 17 correspondant. Dans l'exemple spécifiquement décrit, ce contour a une forme de D, connue en soi.The support 44 also has a bottom 70. It is therefore easy, after assembly of the elements by means of said posts, to cast the resin 45 hardenable in said support which stabilizes the cables inside thereof and immobilizes the nuts 65 The sleeve 35 of the metal case has a keying contour similar to that of the sleeve 38 of the corresponding connector 17. In the example specifically described, this contour has a shape of D, known per se.

L'un des connecteurs comporte un manchon métallique précité dit manchon extérieur (ici il s'agit du manchon 38 du connecteur 17) de section plus grande que celle du manchon 35 (dit manchon intérieur du connecteur 15), de façon à coulisser le long de ce dernier au moment de l'accouplement des deux connecteurs. C'est ce qu'illustrent plus particulièrement les figures 4 et 5.One of the connectors comprises a said metal sleeve said outer sleeve (here it is the sleeve 38 of the connector 17) larger section than that of the sleeve 35 (said inner sleeve of the connector 15), so as to slide along of the latter at the time of the coupling of the two connectors. This is illustrated particularly by Figures 4 and 5 .

En outre, selon une autre caractéristique avantageuse, le manchon extérieur a une longueur suffisante pour que son extrémité libre 75 vienne en contact électrique avec un socle 34 du connecteur comportant le manchon intérieur. Il est à noter que, s'agissant de la norme MIL DTL 83513 définissant l'architecture générale d'un connecteur "micro D", celle-ci ne privilégie pas ce contact électrique en bout.In addition, according to another advantageous characteristic, the outer sleeve has a sufficient length so that its free end 75 comes into electrical contact with a base 34 of the connector comprising the inner sleeve. It should be noted that, with regard to the MIL DTL 83513 standard defining the general architecture of a "micro-D" connector, it does not favor this end electrical contact.

Ce contact électrique en bout, rendu possible et confirmé par les vis d'assemblage 78 des deux connecteurs, engagées dans les colonnettes 58, améliore considérablement la compatibilité électromagnétique (CEM ou "RFI/EMI protection", en anglais) de la connexion haut débit.This end electrical contact, made possible and confirmed by the assembly screws 78 of the two connectors, engaged in the balusters 58, considerably improves the electromagnetic compatibility (EMC or "RFI / EMI protection") of the broadband connection. .

Dans le mode de réalisation représenté les broches femelles 39 du connecteur 17 font saillie de l'insert qui les maintient dans une cavité ouverte délimitée par le manchon 38 qui les entoure, ce dernier étant le manchon extérieur.In the embodiment shown, the female pins 39 of the connector 17 project from the insert which holds them in an open cavity delimited by the sleeve 38 which surrounds them, the latter being the outer sleeve.

Le mode de réalisation tel qu'illustré est actuellement préféré mais on pourrait parfaitement concevoir une structure inverse dans laquelle les broches mâles 29 feraient saillie de l'insert correspondant et les broches femelles 39 seraient entièrement intégrées dans leur propre insert. Bien entendu, les broches mâles pourraient être logées dans un manchon dit extérieur et les broches femelles pourraient être logées dans un manchon dit intérieur.The embodiment as illustrated is currently preferred, but a reverse structure in which the male pins 29 would protrude from the corresponding insert and the female pins 39 would be fully integrated into their own insert could be perfectly conceived. Of course, the male pins could be housed in an outer sleeve and the female pins could be housed in a so-called inner sleeve.

Le connecteur représenté est du type à une voie ; il ne comporte qu'un seul manchon abritant un insert et une paire de broches.The connector shown is of the one-way type; it has only one sleeve housing an insert and a pair of pins.

Cependant, un même connecteur monté sur un circuit imprimé peut comporter un plus grand nombre de manchons, pour le raccordement simultané d'un nombre correspondant de lignes. Dans ce cas, chaque manchon faisant partie du même boîtier métallique abrite un insert et deux broches. Les manchons sont agencés côte à côte et en une seule rangée. Dans ce cas, on peut prévoir un support plus long fixé à la face arrière du socle du boitier métallique (avec interposition d'une plaque métallique) et abritant autant de paires de câbles blindés qu'il y a de manchons.However, the same connector mounted on a printed circuit may have a greater number of sleeves, for the simultaneous connection of a corresponding number of lines. In this case, each sleeve forming part of the same metal housing houses an insert and two pins. The sleeves are arranged side by side and in a single row. In this case, one can provide a longer support fixed to the rear face of the base of the metal case (with the interposition of a metal plate) and housing as many pairs of shielded cables as there are sleeves.

Claims (11)

  1. A connector (15) making it possible to establish a link with a constant-impedance two-wire high-speed transmission line and able to be mounted directly on a printed-circuit electronic card (12,13), characterized in that it comprises at least an assembly comprising:
    - two parallel pins (29),
    - an insulating insert (31) in which said pins are mounted,
    - a metal casing (33) comprising an open sleeve (35) accommodating said insert and said pins, said casing comprising or being associated with mounting means for the fixing thereof onto said electronic card, and
    - two linking cables (20) shielded by at least one outer braid (22), each central core (21) of the cables being linked to a pin and the braid being linked to said metal casing.
  2. The connector according to claim 1, characterized in that said casing comprises a metal wall (40) on the side opposite from said sleeve and in that the or each braid (22) is linked, for example soldered, to this wall.
  3. The connector according to claim 1 or 2, characterized in that the two linking cables (20) consist of two shielded cables with coaxial structure, each comprising a central core (21) linked to a corresponding pin and a braid (22) linked to said metal casing.
  4. The connector according to claim 3, characterized in that said shielded cables (20) are of the conformable, semi-rigid type.
  5. The connector according to one of claims 2 to 4, characterized in that said metal casing is fixed to an insulating material support (44) comprising the aforesaid mounting means.
  6. The connector according to claim 5, characterized in that parts of said two linking cables (20) are immobilized in said support, preferably by means of a resin molded in a cavity (46) thereof.
  7. An electronic card for processing high-speed signals, characterized in that it comprises at least one connector according to one of the preceding claims, fixed on it and whose linking cables (20) are connected, for example soldered to conductors (18) of said printed circuit.
  8. The electronic card according to claim 7, characterized in that the two linking cables consisting of two shielded cables (20) with coaxial structure each comprising a central core and a braid, said cores are respectively soldered to two conductors (18) of said printed circuit and said braids are soldered to one and the same conductor (25) of said printed circuit, forming a ground, in the vicinity of the linking points between said cores and said two conductors.
  9. The electronic card according to claim 8, characterized in that said conductor forming a ground (25) and said two conductors (18) are on the same face of said printed circuit.
  10. The electronic card according to claim 8, characterized in that said conductor forming a ground (25) is defined on a face of the printed circuit on which said connector is situated, in that said two conductors (18) are defined on the other face and in that the cores of said linking cables pass through said printed circuit and are connected to said two conductors on the other face of said printed circuit.
  11. A pair of connectors one of which is according to one of claims 1 to 6, characterized in that one of the connectors comprises an aforesaid metal sleeve, termed the outer sleeve (38), of larger section than that of the corresponding sleeve (35) of the other connector, termed the inner sleeve, so as to slide along the latter during the coupling of the two connectors and in that said outer sleeve has a sufficient length for its free end (75) to come into electrical contact with a base (34) of the connector comprising the inner sleeve.
EP07731918.4A 2006-04-21 2007-04-20 Connector for highbandwidth connection and electronic card equipped with same Active EP2011196B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0651396A FR2900281B1 (en) 2006-04-21 2006-04-21 CONNECTOR FOR HIGH SPEED CONNECTION AND ELECTRONIC CARD HAVING SUCH A CONNECTOR
PCT/FR2007/051143 WO2007122349A1 (en) 2006-04-21 2007-04-20 Connector for highbandwidth connection and electronic card equipped with same

Publications (2)

Publication Number Publication Date
EP2011196A1 EP2011196A1 (en) 2009-01-07
EP2011196B1 true EP2011196B1 (en) 2017-11-08

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US (1) US7857630B2 (en)
EP (1) EP2011196B1 (en)
ES (1) ES2655862T3 (en)
FR (1) FR2900281B1 (en)
WO (1) WO2007122349A1 (en)

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Publication number Publication date
ES2655862T3 (en) 2018-02-22
US7857630B2 (en) 2010-12-28
FR2900281A1 (en) 2007-10-26
EP2011196A1 (en) 2009-01-07
US20090197433A1 (en) 2009-08-06
WO2007122349A1 (en) 2007-11-01
FR2900281B1 (en) 2008-07-25

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