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.
• the invention achieves the objectives mentioned above. 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 less;
• a metal casing comprising an open sleeve housing said insert and said pins, said casing comprising or being associated with mounting means for fixing it on said card, and
• connection cables shielded by at least one outer braid, each cable being connected to a pin and the braid being connected to said metal housing.
• 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.
• FIG. 1 illustrates a high-speed digital signal link established between two printed circuit boards and using connectors according to the invention
• FIG. 2 is an exploded perspective view of a connector according to the invention
• FIG. 3 illustrates the connector installed on a printed circuit board
• FIG. 4 is a sectional view of the connector, installed on the card and a similar connector, before their connection;
• Figure 5 is a view similar to Figure 4, after connection;
• FIG. 6 is a sectional view illustrating an alternative connection of the connector on the printed circuit board.
• FIG. 1 illustrates an example of connection between two printed circuits, by 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 (FIG. 2) of 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 25 and said two conductors forming said parallel lines 18 are on the same face of the printed circuit 12 or 13.
• the conductor 25 forming a mass is defined on one face 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.
• a metal case 33 comprising a base 34 and an open sleeve 35, housing said insert and said pins;
• connection cables shielded by at least one outer braid.
• 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 more particularly in 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 housing (with the interposition of a metal plate) and housing as many pairs of shielded cables as there are sleeves.

Landscapes

• Details Of Connecting Devices For Male And Female Coupling (AREA)
• Coupling Device And Connection With Printed Circuit (AREA)
• Multi-Conductor Connections (AREA)

Applications Claiming Priority (2)

Publications (2)

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ID=37452159

Family Applications (1)

Country Status (5)

Families Citing this family (28)

Family Cites Families (5)

• 2006
  • 2006-04-21 FR FR0651396A patent/FR2900281B1/fr not_active Expired - Fee Related
• 2007
  • 2007-04-20 EP EP07731918.4A patent/EP2011196B1/de active Active
  • 2007-04-20 ES ES07731918.4T patent/ES2655862T3/es active Active
  • 2007-04-20 US US12/298,018 patent/US7857630B2/en active Active
  • 2007-04-20 WO PCT/FR2007/051143 patent/WO2007122349A1/fr active Application Filing

Non-Patent Citations (1)

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