EP1054479A1 - Device for electrically connecting a coaxial line to a printed circuit board - Google Patents

Device for electrically connecting a coaxial line to a printed circuit board Download PDF

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Publication number
EP1054479A1
EP1054479A1 EP00401396A EP00401396A EP1054479A1 EP 1054479 A1 EP1054479 A1 EP 1054479A1 EP 00401396 A EP00401396 A EP 00401396A EP 00401396 A EP00401396 A EP 00401396A EP 1054479 A1 EP1054479 A1 EP 1054479A1
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EP
European Patent Office
Prior art keywords
contact
card
central
circuit board
external
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.)
Withdrawn
Application number
EP00401396A
Other languages
German (de)
French (fr)
Inventor
Jean-Marc Baffert
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.)
Radiall SA
Original Assignee
Radiall SA
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Filing date
Publication date
Application filed by Radiall SA filed Critical Radiall SA
Publication of EP1054479A1 publication Critical patent/EP1054479A1/en
Withdrawn legal-status Critical Current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
    • 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]
    • 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
    • H01R12/721—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures cooperating directly with the edge of the rigid printed circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2103/00—Two poles

Definitions

  • the present invention relates to a device for electrically connecting a coaxial line to a printed circuit board.
  • the present invention aims to provide a simple and economical device allowing to connect a coaxial line directly on a printed circuit board, this device having, in addition, a very small footprint.
  • the present invention relates to a device for electrically connecting a line coaxial with a printed circuit board comprising at least two tracks conductive each extending to an edge of the card, the device comprising a external contact and a central contact housed inside the external contact, characterized by the fact that the external contact has a part for connection to the shape card substantially tubular, provided with two diametrically opposite slots which separate said connecting part in two jaws arranged to clamp between them said card introduced by its edge between said jaws and by the fact that the central contact includes a clip-shaped connection part to the card, in which engages the edge of the card when it is inserted between the two jaws of the contact external.
  • the device according to the invention proves to be particularly simple and economical to manufacture and install because it consists of only one element which can be assembled directly on the map.
  • the coaxial structure of the power line is preserved to the tracks on the card, which allows the line impedance to be controlled as well as possible.
  • the device according to the invention also has the advantage that apart from the arrangement of the conductive tracks at the edge of the card, no special preparation of the card is required, i.e. no cutting, metallization or drilling.
  • the external contact of the device is made by bar turning.
  • the external contact is produced by cutting and rolling a metal sheet.
  • the central contact is produced by cutting, rolling and / or folding of a metal sheet.
  • the device is arranged to be mounted on a panel adjacent to the printed circuit board, so that said panel supports the device and releases its connection parts mounted on the edge of the mechanical stress map resulting from the presence of a coaxial cable constituting the coaxial line.
  • FIGs 1 to 8 there is shown a printed circuit board 1 comprising in particular three parallel ribbon conducting tracks 2, 3, 4, including the central track 3 is intended to convey an electrical signal while the two tracks 2, 4 which surround it are mass tracks.
  • the track spacing on the map is determined according to the impedance that one wishes to fix to the pseudo coaxial line thus constituted.
  • the three tracks extend to edge 5 of the map where they are close together so that their spacing corresponds to that of the connection device 6 which will be described.
  • This connection device 6 is mounted on a panel 7 (partially shown) of a case (not shown) containing the card.
  • the device consists of a body 8, an external contact 9, an insulator 10 and a central contact 11 housed in the external contact.
  • the external contact comprises a rear part tubular 12 intended to be electrically connected to the ground contact of an element of coaxial connector (not shown) to which the device must be connected, and a part before 13, which will be referred to as a connection part, of substantially tubular shape and comprising two diametrically opposite slots 14 extending to the front face 15 of the contact, thus forming two jaws 16 facing each other.
  • Each slot 14 is trapezoidal, its large base 17 being opposite the front face 15 of the contact.
  • each jaw 16 is supported on the card by its front end which has two zones support 18 on the ground tracks 2, 4 of the printed circuit board 1.
  • the rear part 12 and the connection part 13 of the contact are separated by an annular collar 19 comprising two diametrically opposite flats 20.
  • the external contact internally receives the tubular insulation 10, visible in particular in FIG. 7, which has a front bore 21 and a rear bore 22, connected by a longitudinal central channel 23.
  • the central contact 11, visible in perspective in FIG. 8, is housed in the insulator 10 as seen in particular in FIGS. 2 and 3.
  • This central contact comprises a front part 24, called the connection part, in form of clamp and a rear part 25 provided with a pin 26 which is intended to be connected to a central conductor socket of the coaxial connector element (not shown) to which the device should be connected.
  • the bores 21, 22 of the insulator 10 leave a free space around the clamp 24 and pin 26.
  • the central contact is made by cutting and rolling a metal sheet on the spindle which is obtained by turning.
  • the clamp-shaped connection portion 24 includes two blades elastic bands 27 which delimit between them a lyre-shaped volume, as is good known in terms of pliers, so that the support zone 28 of each blade 27 on the card circuit board 1 is located near the front end of the clamp.
  • the two blades 27 are joined by a core 29 which extends from their base up to a cylindrical portion 30 of the conductor, connecting said blades 27 to the pin 26.
  • the central contact 10 is put in place in the external contact 9 with interposition of the tubular insulator 10 in a orientation such that the two blades 27 of the clamp 24 and the two jaws 16 of the external contact leave between them a volume whose thickness corresponds substantially to that of the printed circuit board 1.
  • the central contact 11 is forcibly inserted into the insulator 10, which is itself forcefully inserted into the external contact 9.
  • This body includes a cylindrical rear part 31, intended to receive internally the coaxial connector element mentioned above and which can be mounted at the end of a coaxial cable (not shown) and a front part 32 arranged to secure the device to the panel 7 through a through hole 33 provided for this purpose.
  • This front part 32 comprises a collar 34, of diameter greater than the hole 33 of the panel, and harpoons of which a first pair 35 ensures the subjugation of the external contact 9 to the body and the other pair 36 of which secures the body to sign.
  • the harpoons of the first pair 35 directed inwards, trap the flange 19 of the external contact by resting on its flats 20.
  • the harpoons of the second pair 36 directed outwards, ensure the snap-fastening of the body 8 on the panel in the position shown in FIG. 3.
  • the external contact 49 of the device has, a rear part 52 receiving the metal braid (not shown) of the coaxial cable 40 and a front portion 53 of connection to the card, constituted by two jaws 56 separated by diametrically opposite slots 54 and arranged to pinch the card printed circuit 1 and come to bear against ground tracks 42 and 44.
  • the external contact comprises a intermediate portion 77 consisting of a cylindrical section 78 bordered by two annular projections 79, 80 whose function will be described later.
  • This central contact includes, like the one described above, a part 64 of connection to the clip-shaped card, constituted by two shaped blades 67 in lyre.
  • the rear part 65 of the central contact is a crimping area which is intended to be crushed on the stripped central conductor 66 of the coaxial cable (in FIG. 10, only the central conductor, in partial section, and a front portion of the cable insulation, in view are shown).
  • the central contact 51 is centered in the external contact 49 by the cable 40 itself, since the central conductor of the coaxial cable is centered with respect to the latter's mass braid.
  • the central contact 51 is centered by report to the external contact by interposition of an insulator 50, shown in perspective at FIG. 13, which is a section of cylinder whose outer, circular section, corresponds to the internal section of the external contact 49 and whose internal section, rectangular, corresponds to the largest section of the central contact 51, in its section in which the two blades 67 are substantially parallel.
  • an insulator 50 shown in perspective at FIG. 13, which is a section of cylinder whose outer, circular section, corresponds to the internal section of the external contact 49 and whose internal section, rectangular, corresponds to the largest section of the central contact 51, in its section in which the two blades 67 are substantially parallel.
  • This insulator engages around the central contact from the front and abuts on two pins 67a which project at the base of the clamp.
  • the assembly constituted by the external contact 49, the insulator 50 and the central contact 51 is housed in a three-part housing 48 (FIG. 10) comprising a rear sleeve 71, which engages around the cable 40 and compresses, by force fitting, its braid metallic on the rear part 52 of the external contact 49, a through part 72, shown in perspective in Figure 11, which receives the cable 40 equipped with the contacts central 51 and external 49 and rear sleeve 71 and immobilizes it axially thanks to a split ring 74 engaged in a chimney 75 of said through part opening opposite the cylindrical section 77 of the external contact, between the two annular projections 79 and 80, and a fixing part 76 which is snapped onto the panel 77, receives said through portion 72 by closing off its chimney 75 and retains it by snap-in.
  • a split ring 74 engaged in a chimney 75 of said through part opening opposite the cylindrical section 77 of the external contact, between the two annular projections 79 and 80, and a fixing part
  • the through part 72 covers the external contact 49 over its entire length and comprises, at the front, two slots 72 a corresponding to the slots 54 of the external contact, to allow the introduction of the edge of the card.
  • the rear sleeve 71 of the housing is engaged on the cable 40, which is stripped so as to protrude its central conductor 66 over a length of a few millimeters.
  • the crimp area 65 of the central contact is crimped on the central contact 66 of the cable.
  • the insulator 50 is engaged around the clamp 64 of the central contact.
  • the cable 40 provided with the central contact 51 supporting the insulator 50 is engaged by the rear in the external conductor 49, the metal braid of the cable 40 being applied on the outer wall of the rear part 52 of the external contact 49.
  • the sleeve 71 is brought forward to cover the ground braid of the cable and immobilize it on the rear part 52 of the external contact 49.
  • the assembly is introduced from the rear into the through part 72 of the housing.
  • the split ring 74 is placed around the cylindrical section 78 of the external contact, through the chimney 75 of the through portion 72 of the housing.
  • the assembly is snapped into the fixing portion 76 of the housing.
  • the device according to the invention is advantageous in that it requires no special preparation of the circuit board printed.
  • the coaxial line to be connected to the printed circuit board thanks to the device according to the invention can be constituted by any support, not limited to a coaxial cable.
  • the conductive tracks of the card can be arranged differently, for example with only one ribbon on one side, to the right of the central contact, to convey the signal and a complete ground plan on the other side, indented at the central contact support area.

Abstract

The coaxial line to printed circuit adapter has a printed circuit board (1) with tracks. An outer tubular section (9) on the coaxial connector connects to outer tracks. A central contact (11) connects to the central track. The external contact has two s and outer grips holding the circuit board, whilst the central contact grips the central circuit board section.

Description

La présente invention concerne un dispositif pour relier électriquement une ligne coaxiale à une carte de circuit imprimé.The present invention relates to a device for electrically connecting a coaxial line to a printed circuit board.

On a déjà imaginé et proposé un certain nombre de solutions pour relier un câble coaxial à une carte de circuit imprimé.We have already imagined and proposed a number of solutions to connect a coaxial cable to a printed circuit board.

La solution la plus simple consiste à souder directement le conducteur de masse et le conducteur central du câble sur des pistes correspondantes de la carte. Ce procédé ne convient cependant que pour des circuits basses fréquences en raison du mauvais contrôle d'impédance qui résulte de la soudure. En outre, il ne permet pas le démontage du câble.The simplest solution is to directly solder the conductor of ground and the central conductor of the cable on corresponding tracks on the card. This However, this process is only suitable for low frequency circuits due to the poor impedance control resulting from soldering. In addition, it does not allow the cable disassembly.

On a également proposé des connecteurs en deux éléments dont l'un se fixe sur la carte et l'autre se monte à l'extrémité du câble coaxial. Ces connecteurs présentent tous les avantages d'une connexion amovible et assurent généralement un bon contrôle d'impédance de la ligne.We have also proposed connectors in two elements, one of which attaches to the card and the other is mounted at the end of the coaxial cable. These connectors have all the benefits of a removable connection and generally provide good control line impedance.

En revanche, ils sont relativement complexes et coûteux à fabriquer et occupent un volume important sur la carte, ce qui n'est pas toujours compatible avec la miniaturisation de celle-ci.On the other hand, they are relatively complex and expensive to manufacture and occupy a large volume on the card, which is not always compatible with the miniaturization thereof.

La présente invention vise à fournir un dispositif simple et économique permettant de connecter une ligne coaxiale directement sur une carte de circuit imprimé, ce dispositif ayant, de plus, un encombrement très réduit.The present invention aims to provide a simple and economical device allowing to connect a coaxial line directly on a printed circuit board, this device having, in addition, a very small footprint.

La présente invention a pour objet un dispositif pour relier électriquement une ligne coaxiale à une carte de circuit imprimé comprenant au moins deux pistes conductrices s'étendant chacune jusqu'à un bord de la carte, le dispositif comprenant un contact externe et un contact central logé à l'intérieur du contact externe, caractérisé par le fait que le contact externe comporte une partie de raccordement à la carte de forme sensiblement tubulaire, munie de deux fentes diamétralement opposées qui séparent ladite partie de raccordement en deux mâchoires agencées pour pincer entre elles ladite carte introduite par son bord entre lesdites mâchoires et par le fait que le contact central comporte une partie de raccordement à la carte en forme de pince, dans laquelle s'engage le bord de la carte lorsqu'il est introduit entre les deux mâchoires du contact externe. The present invention relates to a device for electrically connecting a line coaxial with a printed circuit board comprising at least two tracks conductive each extending to an edge of the card, the device comprising a external contact and a central contact housed inside the external contact, characterized by the fact that the external contact has a part for connection to the shape card substantially tubular, provided with two diametrically opposite slots which separate said connecting part in two jaws arranged to clamp between them said card introduced by its edge between said jaws and by the fact that the central contact includes a clip-shaped connection part to the card, in which engages the edge of the card when it is inserted between the two jaws of the contact external.

Le dispositif selon l'invention s'avère particulièrement simple et économique à fabriquer et à installer car il ne se compose que d'un seul élément qui se monte directement sur la carte.The device according to the invention proves to be particularly simple and economical to manufacture and install because it consists of only one element which can be assembled directly on the map.

Pour utiliser le dispositif selon l'invention, il suffit d'agencer les pistes à connecter au bord de la carte en les espaçant de manière qu'elles se trouvent vis-à-vis des zones d'appui des contacts du dispositif.To use the device according to the invention, it suffices to arrange the tracks to connect to the edge of the card by spacing them so that they are opposite support zones for device contacts.

Ces zones d'appui des contacts, qui sont les extrémités par lesquelles lesdits contacts pincent la carte, ne réalisent pas toutes nécessairement une liaison électrique entre le contact concerné et une piste de la carte, elles peuvent en effet n'assurer que la fonction mécanique de pincement de la carte.These contact support zones, which are the ends by which said contacts pinch the card, not all necessarily make an electrical connection between the contact concerned and a track on the card, they can indeed only ensure the mechanical card pinch function.

Grâce à l'invention, la structure coaxiale de la ligne électrique est conservée jusqu'aux pistes de la carte, ce qui permet de contrôler au mieux l'impédance de la ligne.Thanks to the invention, the coaxial structure of the power line is preserved to the tracks on the card, which allows the line impedance to be controlled as well as possible.

En ce qui concerne la carte, le dispositif selon l'invention présente également l'avantage qu'en dehors de l'agencement des pistes conductrices au bord de la carte, aucune préparation particulière de la carte n'est requise, à savoir aucune découpe, métallisation ou perçage.With regard to the card, the device according to the invention also has the advantage that apart from the arrangement of the conductive tracks at the edge of the card, no special preparation of the card is required, i.e. no cutting, metallization or drilling.

Dans un mode de réalisation particulier de l'invention, le contact externe du dispositif est réalisé par décolletage.In a particular embodiment of the invention, the external contact of the device is made by bar turning.

Dans un autre mode de réalisation, le contact externe est réalisé par découpage et roulage d'une feuille métallique.In another embodiment, the external contact is produced by cutting and rolling a metal sheet.

Dans un mode de réalisation particulier, le contact central est réalisé par découpage, roulage et/ou pliage d'une feuille métallique.In a particular embodiment, the central contact is produced by cutting, rolling and / or folding of a metal sheet.

Dans un mode de réalisation particulier, le dispositif est agencé pour être monté sur un panneau voisin de la carte de circuit imprimé, de manière que ledit panneau supporte le dispositif et libère ses parties de raccordement montées sur le bord de la carte des contraintes mécaniques résultant de la présence d'un câble coaxial constituant la ligne coaxiale.In a particular embodiment, the device is arranged to be mounted on a panel adjacent to the printed circuit board, so that said panel supports the device and releases its connection parts mounted on the edge of the mechanical stress map resulting from the presence of a coaxial cable constituting the coaxial line.

Dans le but de mieux faire comprendre l'invention, on va en décrire maintenant deux modes de réalisation, donnés à titre d'exemples non limitatifs de la portée de l'invention, en référence au dessin annexé dans lequel :

  • la figure 1 est une vue en perspective d'une portion d'une carte de circuit imprimé et d'un dispositif selon un premier mode de réalisation de l'invention,
  • la figure 2 est une vue en coupe axiale du dispositif de la figure 1, avant montage sur la carte,
  • la figure 3 est une vue analogue à la figure 2 du dispositif après montage sur la carte,
  • la figure 4 est une vue en perspective du corps du dispositif,
  • la figure 5 est une vue en coupe selon V-V de la figure 4,
  • la figure 6 est une vue en perspective du contact externe,
  • la figure 7 est une vue en perspective de l'isolant intercalé entre le contact central et le contact externe,
  • la figure 8 est une vue en perspective du contact central,
  • la figure 9 est une vue en perspective d'un dispositif selon un deuxième mode de réalisation de l'invention,
  • la figure 10 est une vue en coupe selon X-X de la figure 9,
  • la figure 11 est une vue en perspective du corps du dispositif de la figure 9,
  • la figure 12 est une vue en perspective du contact externe,
  • la figure 13 est une vue en perspective de l'isolant séparant le contact externe et le contact interne, et
  • la figure 14 est une vue en perspective du contact central.
In order to better understand the invention, we will now describe two embodiments, given by way of non-limiting examples of the scope of the invention, with reference to the accompanying drawing in which:
  • FIG. 1 is a perspective view of a portion of a printed circuit board and of a device according to a first embodiment of the invention,
  • FIG. 2 is a view in axial section of the device of FIG. 1, before mounting on the card,
  • FIG. 3 is a view similar to FIG. 2 of the device after mounting on the card,
  • FIG. 4 is a perspective view of the body of the device,
  • FIG. 5 is a sectional view along VV of FIG. 4,
  • FIG. 6 is a perspective view of the external contact,
  • FIG. 7 is a perspective view of the insulation inserted between the central contact and the external contact,
  • FIG. 8 is a perspective view of the central contact,
  • FIG. 9 is a perspective view of a device according to a second embodiment of the invention,
  • FIG. 10 is a sectional view along XX of FIG. 9,
  • FIG. 11 is a perspective view of the body of the device in FIG. 9,
  • FIG. 12 is a perspective view of the external contact,
  • FIG. 13 is a perspective view of the insulator separating the external contact and the internal contact, and
  • Figure 14 is a perspective view of the central contact.

Sur les figures 1 à 8, on a représenté une carte de circuit imprimé 1 comprenant notamment trois pistes conductrices en ruban parallèles 2, 3, 4, dont la piste centrale 3 est destinée à véhiculer un signal électrique tandis que les deux pistes 2, 4 qui l'entourent sont des pistes de masse.In Figures 1 to 8, there is shown a printed circuit board 1 comprising in particular three parallel ribbon conducting tracks 2, 3, 4, including the central track 3 is intended to convey an electrical signal while the two tracks 2, 4 which surround it are mass tracks.

L'écartement des pistes sur la carte est déterminé en fonction de l'impédance que l'on désire fixer à la pseudo ligne coaxiale ainsi constituée.The track spacing on the map is determined according to the impedance that one wishes to fix to the pseudo coaxial line thus constituted.

Les trois pistes se prolongent jusqu'au bord 5 de la carte où elles sont rapprochées les unes des autres de manière à ce que leur écartement corresponde à celui du dispositif de connexion 6 qui va être décrit.The three tracks extend to edge 5 of the map where they are close together so that their spacing corresponds to that of the connection device 6 which will be described.

Ce dispositif de connexion 6 est monté sur un panneau 7 (partiellement représenté) d'un boítier (non représenté) contenant la carte.This connection device 6 is mounted on a panel 7 (partially shown) of a case (not shown) containing the card.

Le dispositif se compose d'un corps 8, d'un contact externe 9, d'un isolant 10 et d'un contact central 11 logé dans le contact externe.The device consists of a body 8, an external contact 9, an insulator 10 and a central contact 11 housed in the external contact.

Sur la figure 6, on voit que le contact externe comprend une partie arrière tubulaire 12 destinée à être reliée électriquement au contact de masse d'un élément de connecteur coaxial (non représenté) auquel le dispositif doit être connecté, et une partie avant 13, que l'on désignera partie de raccordement, de forme sensiblement tubulaire et comportant deux fentes 14 diamétralement opposées s'étendant jusqu'à la face frontale 15 du contact, formant ainsi deux mâchoires 16 en regard l'une de l'autre.In FIG. 6, it can be seen that the external contact comprises a rear part tubular 12 intended to be electrically connected to the ground contact of an element of coaxial connector (not shown) to which the device must be connected, and a part before 13, which will be referred to as a connection part, of substantially tubular shape and comprising two diametrically opposite slots 14 extending to the front face 15 of the contact, thus forming two jaws 16 facing each other.

Ces deux fentes 14 permettent l'introduction du bord 5 de la carte qui se trouve ainsi pincé entre les deux mâchoires 16 du contact externe.These two slots 14 allow the introduction of the edge 5 of the card which is located thus pinched between the two jaws 16 of the external contact.

Chaque fente 14 est trapézoïdale, sa grande base 17 se trouvant à l'opposé de la face frontale 15 du contact.Each slot 14 is trapezoidal, its large base 17 being opposite the front face 15 of the contact.

Ainsi, lorsque le contact externe 9 enserre la carte de circuit imprimé 1, chaque mâchoire 16 s'appuie sur la carte par son extrémité avant qui comporte deux zones d'appui 18 sur les pistes de masse 2, 4 de la carte de circuit imprimé 1.Thus, when the external contact 9 encloses the printed circuit board 1, each jaw 16 is supported on the card by its front end which has two zones support 18 on the ground tracks 2, 4 of the printed circuit board 1.

La partie arrière 12 et la partie de raccordement 13 du contact sont séparées par une collerette annulaire 19 comportant deux méplats 20 diamétralement opposés.The rear part 12 and the connection part 13 of the contact are separated by an annular collar 19 comprising two diametrically opposite flats 20.

Le contact externe reçoit intérieurement l'isolant tubulaire 10, visible notamment à la figure 7, lequel comporte un alésage avant 21 et un alésage arrière 22, reliés par un canal central longitudinal 23.The external contact internally receives the tubular insulation 10, visible in particular in FIG. 7, which has a front bore 21 and a rear bore 22, connected by a longitudinal central channel 23.

Le contact central 11, visible en perspective à la figure 8, se loge dans l'isolant 10 comme on le voit notamment aux figures 2 et 3.The central contact 11, visible in perspective in FIG. 8, is housed in the insulator 10 as seen in particular in FIGS. 2 and 3.

Ce contact central comporte une partie avant 24, dite de raccordement, en forme de pince et une partie arrière 25 munie d'une broche 26 qui est destinée à être reliée à une douille de conducteur central de l'élément de connecteur coaxial (non représenté) auquel le dispositif doit être connecté.This central contact comprises a front part 24, called the connection part, in form of clamp and a rear part 25 provided with a pin 26 which is intended to be connected to a central conductor socket of the coaxial connector element (not shown) to which the device should be connected.

Les alésages 21, 22 de l'isolant 10 dégagent un espace libre autour de la pince 24 et de la broche 26.The bores 21, 22 of the insulator 10 leave a free space around the clamp 24 and pin 26.

Le contact central est réalisé par découpage et roulage d'une feuille métallique sur la broche qui est obtenue par décolletage.The central contact is made by cutting and rolling a metal sheet on the spindle which is obtained by turning.

La partie de raccordement 24 en forme de pince comprend deux lames élastiques 27 qui délimitent entre elles un volume en forme de lyre, comme cela est bien connu en matière de pinces, afin que la zone d'appui 28 de chaque lame 27 sur la carte de circuit imprimé 1 se situe au voisinage de l'extrémité avant de la pince.The clamp-shaped connection portion 24 includes two blades elastic bands 27 which delimit between them a lyre-shaped volume, as is good known in terms of pliers, so that the support zone 28 of each blade 27 on the card circuit board 1 is located near the front end of the clamp.

Les deux lames 27 sont réunies par une âme 29 qui s'étend depuis leur base jusqu'à une portion cylindrique 30 du conducteur, reliant lesdites lames 27 à la broche 26.The two blades 27 are joined by a core 29 which extends from their base up to a cylindrical portion 30 of the conductor, connecting said blades 27 to the pin 26.

Comme on le voit notamment à la figure 2, le contact central 10 se met en place dans le contact externe 9 avec interposition de l'isolant tubulaire 10 dans une orientation telle que les deux lames 27 de la pince 24 et les deux mâchoires 16 du contact externe laissent entre elles un volume dont l'épaisseur correspond sensiblement à celle de la carte de circuit imprimé 1.As seen in particular in Figure 2, the central contact 10 is put in place in the external contact 9 with interposition of the tubular insulator 10 in a orientation such that the two blades 27 of the clamp 24 and the two jaws 16 of the external contact leave between them a volume whose thickness corresponds substantially to that of the printed circuit board 1.

Le contact central 11 est inséré en force dans l'isolant 10, lequel est lui-même inséré en force dans le contact externe 9.The central contact 11 is forcibly inserted into the insulator 10, which is itself forcefully inserted into the external contact 9.

L'ensemble des deux contacts et de l'isolant est introduit dans le corps 8 en matière plastique, qui est visible aux figures 4 et 5.The assembly of the two contacts and of the insulation is introduced into the body 8 in plastic material, which is visible in Figures 4 and 5.

Ce corps comprend une partie arrière cylindrique 31, destinée à recevoir intérieurement l'élément de connecteur coaxial mentionné ci-dessus et qui peut être monté à l'extrémité d'un câble coaxial (non représenté) et une partie avant 32 agencée pour assurer l'assujettissement du dispositif au panneau 7 à travers un trou de passage 33 prévu à cet effet.This body includes a cylindrical rear part 31, intended to receive internally the coaxial connector element mentioned above and which can be mounted at the end of a coaxial cable (not shown) and a front part 32 arranged to secure the device to the panel 7 through a through hole 33 provided for this purpose.

Cette partie avant 32 comprend une collerette 34, de diamètre supérieur au trou 33 du panneau, et des harpons dont une première paire 35 assure l'assujettissement du contact externe 9 au corps et dont l'autre paire 36 assure l'assujettissement du corps au panneau.This front part 32 comprises a collar 34, of diameter greater than the hole 33 of the panel, and harpoons of which a first pair 35 ensures the subjugation of the external contact 9 to the body and the other pair 36 of which secures the body to sign.

Les harpons de la première paire 35, dirigés vers l'intérieur, emprisonnent la collerette 19 du contact externe en prenant appui sur ses méplats 20.The harpoons of the first pair 35, directed inwards, trap the flange 19 of the external contact by resting on its flats 20.

Les harpons de la seconde paire 36, dirigés vers l'extérieur, assurent l'encliquetage du corps 8 sur le panneau dans la position représentée à la figure 3.The harpoons of the second pair 36, directed outwards, ensure the snap-fastening of the body 8 on the panel in the position shown in FIG. 3.

Dans le mode de réalisation des figures 9 à 14, il s'agit également de relier un câble coaxial 40 aux pistes conductrices en ruban 42, 43, 44 d'une carte de circuit imprimé 41 dont le bord 45 se situe au voisinage d'un panneau 47.In the embodiment of FIGS. 9 to 14, it is also a question of connecting a coaxial cable 40 to the conductive strip tracks 42, 43, 44 of a circuit board printed 41 whose edge 45 is located in the vicinity of a panel 47.

Comme on le voit à la figure 12, le contact externe 49 du dispositif présente, une partie arrière 52 recevant la tresse métallique (non représentée) du câble coaxial 40 et une portion avant 53 de raccordement à la carte, constituée par deux mâchoires 56 séparées par des fentes 54 diamétralement opposées et agencées pour pincer la carte de circuit imprimé 1 et venir en appui contre les pistes de masse 42 et 44. As can be seen in FIG. 12, the external contact 49 of the device has, a rear part 52 receiving the metal braid (not shown) of the coaxial cable 40 and a front portion 53 of connection to the card, constituted by two jaws 56 separated by diametrically opposite slots 54 and arranged to pinch the card printed circuit 1 and come to bear against ground tracks 42 and 44.

Entre la partie arrière 52 et la partie avant 53, le contact externe comporte une portion intermédiaire 77 constituée par un tronçon cylindrique 78 bordé par deux saillies annulaires 79, 80 dont la fonction sera décrite ultérieurement.Between the rear part 52 and the front part 53, the external contact comprises a intermediate portion 77 consisting of a cylindrical section 78 bordered by two annular projections 79, 80 whose function will be described later.

A l'intérieur du contact externe 49, vient se loger un contact central 51 dont une représentation en perspective est fournie à la figure 14.Inside the external contact 49, a central contact 51 is housed, one of which perspective representation is provided in Figure 14.

Ce contact central comprend, comme celui précédemment décrit, une partie 64 de raccordement à la carte en forme de pince, constituée par deux lames 67 conformées en lyre. La partie arrière 65 du contact central est une zone à sertir qui est destinée à être écrasée sur le conducteur central dénudé 66 du câble coaxial (sur la figure 10, seuls le conducteur central, en coupe partielle, et une portion avant de l'isolant du câble, en vue extérieure, sont représentés).This central contact includes, like the one described above, a part 64 of connection to the clip-shaped card, constituted by two shaped blades 67 in lyre. The rear part 65 of the central contact is a crimping area which is intended to be crushed on the stripped central conductor 66 of the coaxial cable (in FIG. 10, only the central conductor, in partial section, and a front portion of the cable insulation, in view are shown).

Dans sa partie arrière, le contact central 51 est centré dans le contact externe 49 par le câble 40 lui-même, étant donné que le conducteur central du câble coaxial est centré par rapport à la tresse de masse de ce dernier.In its rear part, the central contact 51 is centered in the external contact 49 by the cable 40 itself, since the central conductor of the coaxial cable is centered with respect to the latter's mass braid.

Dans sa partie avant de raccordement 64, le contact central 51 est centré par rapport au contact externe par interposition d'un isolant 50, représenté en perspective à la figure 13, qui est un tronçon de cylindre dont la section extérieure, circulaire, correspond à la section intérieure du contact externe 49 et dont la section intérieure, rectangulaire, correspond à la plus grande section du contact central 51, dans son tronçon dans lequel les deux lames 67 sont sensiblement parallèles.In its front connection part 64, the central contact 51 is centered by report to the external contact by interposition of an insulator 50, shown in perspective at FIG. 13, which is a section of cylinder whose outer, circular section, corresponds to the internal section of the external contact 49 and whose internal section, rectangular, corresponds to the largest section of the central contact 51, in its section in which the two blades 67 are substantially parallel.

Cet isolant s'engage autour du contact central par l'avant et vient en butée sur deux ergots 67a qui font saillie à la base de la pince.This insulator engages around the central contact from the front and abuts on two pins 67a which project at the base of the clamp.

L'ensemble constitué par le contact externe 49, l'isolant 50 et le contact central 51 se loge dans un boítier en trois parties 48 (figure 10) comprenant un manchon arrière 71, qui s'engage autour du câble 40 et comprime, par emmanchement à force, sa tresse métallique sur la partie arrière 52 du contact externe 49, une partie traversante 72, représentée en perspective sur la figure 11, qui reçoit le câble 40 équipé des contacts central 51 et externe 49 et du manchon arrière 71 et l'immobilise axialement grâce à une bague fendue 74 engagée dans une cheminée 75 de ladite partie traversante débouchant en regard du tronçon cylindrique 77 du contact externe, entre les deux saillies annulaires 79 et 80, et une partie de fixation 76 qui s'assujettit par encliquetage au panneau 77, reçoit ladite partie traversante 72 en obturant sa cheminée 75 et la retient par encliquetage.The assembly constituted by the external contact 49, the insulator 50 and the central contact 51 is housed in a three-part housing 48 (FIG. 10) comprising a rear sleeve 71, which engages around the cable 40 and compresses, by force fitting, its braid metallic on the rear part 52 of the external contact 49, a through part 72, shown in perspective in Figure 11, which receives the cable 40 equipped with the contacts central 51 and external 49 and rear sleeve 71 and immobilizes it axially thanks to a split ring 74 engaged in a chimney 75 of said through part opening opposite the cylindrical section 77 of the external contact, between the two annular projections 79 and 80, and a fixing part 76 which is snapped onto the panel 77, receives said through portion 72 by closing off its chimney 75 and retains it by snap-in.

Les détails du mode de retenue de la partie traversante 72 dans la partie de fixation 76 et de la partie de fixation dans le panneau 47 ne seront pas décrits ici car ils sont aisément compréhensibles par l'homme du métier, qui pourra en imaginer de nombreux équivalents.The details of the retention method of the through part 72 in the part of fixing 76 and the fixing part in the panel 47 will not be described here because they are easily understood by a person skilled in the art, who can imagine many equivalents.

La partie traversante 72 recouvre le contact externe 49 sur toute sa longueur et comporte, à l'avant, deux fentes 72a correspondant aux fentes 54 du contact externe, pour permettre l'introduction du bord de la carte.The through part 72 covers the external contact 49 over its entire length and comprises, at the front, two slots 72 a corresponding to the slots 54 of the external contact, to allow the introduction of the edge of the card.

Le montage d'un tel dispositif s'effectue de la manière suivante.The mounting of such a device is carried out as follows.

Le manchon arrière 71 du boítier est engagé sur le câble 40, lequel est dénudé de manière à faire dépasser son conducteur central 66 sur une longueur de quelques millimètres.The rear sleeve 71 of the housing is engaged on the cable 40, which is stripped so as to protrude its central conductor 66 over a length of a few millimeters.

La zone à sertir 65 du contact central est sertie sur le contact central 66 du câble.The crimp area 65 of the central contact is crimped on the central contact 66 of the cable.

L'isolant 50 est engagé autour de la pince 64 du contact central.The insulator 50 is engaged around the clamp 64 of the central contact.

Le câble 40 muni du contact central 51 supportant l'isolant 50, est engagé par l'arrière dans le conducteur externe 49, la tresse métallique du câble 40 étant appliquée sur la paroi extérieure de la partie arrière 52 du contact externe 49.The cable 40 provided with the central contact 51 supporting the insulator 50, is engaged by the rear in the external conductor 49, the metal braid of the cable 40 being applied on the outer wall of the rear part 52 of the external contact 49.

Le manchon 71 est ramené vers l'avant pour couvrir la tresse de masse du câble et l'immobiliser sur la partie arrière 52 du contact externe 49.The sleeve 71 is brought forward to cover the ground braid of the cable and immobilize it on the rear part 52 of the external contact 49.

L'ensemble est introduit par l'arrière dans la partie traversante 72 du boítier.The assembly is introduced from the rear into the through part 72 of the housing.

La bague fendue 74 est mise en place autour du tronçon cylindrique 78 du contact externe, par la cheminée 75 de la partie traversante 72 du boítier.The split ring 74 is placed around the cylindrical section 78 of the external contact, through the chimney 75 of the through portion 72 of the housing.

L'ensemble est encliqueté dans la partie de fixation 76 du boítier.The assembly is snapped into the fixing portion 76 of the housing.

On voit que le dispositif qui vient d'être décrit est simple et économique, tant en ce qui concerne ses parties constitutives qu'en ce qui concerne son montage à l'extrémité d'un câble coaxial.We see that the device which has just been described is simple and economical, as long as regards its constituent parts as with regard to its mounting to the end of a coaxial cable.

En outre, comme cela a déjà été précisé, le dispositif selon l'invention est avantageux en ce qu'il ne nécessite aucune préparation particulière de la carte de circuit imprimé.In addition, as has already been specified, the device according to the invention is advantageous in that it requires no special preparation of the circuit board printed.

Il est bien entendu que les modes de réalisation qui viennent d'être décrits ne présentent aucun caractère limitatif et qu'ils pourront recevoir toute modification désirable sans sortir pour cela du cadre de l'invention défini par les revendications.It is understood that the embodiments which have just been described do not are in no way limiting and that they may receive any modification desirable without departing from the scope of the invention defined by the claims.

En particulier, la ligne coaxiale à relier à la carte de circuit imprimé grâce au dispositif selon l'invention peut être constituée par n'importe quel support, non limité à un câble coaxial.In particular, the coaxial line to be connected to the printed circuit board thanks to the device according to the invention can be constituted by any support, not limited to a coaxial cable.

De plus, les pistes conductrices de la carte peuvent être agencées différemment, par exemple avec uniquement un ruban sur une face, au droit du contact central, pour véhiculer le signal et un plan de masse complet sur l'autre face, échancré au droit de la zone d'appui du contact central.In addition, the conductive tracks of the card can be arranged differently, for example with only one ribbon on one side, to the right of the central contact, to convey the signal and a complete ground plan on the other side, indented at the central contact support area.

Claims (5)

Dispositif pour relier électriquement une ligne coaxiale à une carte de circuit imprimé (1 ; 41) comprenant au moins deux pistes conductrices (2, 3, 4 ; 42, 43, 44) s'étendant chacune jusqu'à un bord (5 ; 45) de ladite carte, le dispositif comprenant un contact externe (9 ; 49) et un contact central (11 ; 51) logé à l'intérieur du contact externe, caractérisé par le fait que le contact externe (9 ; 49) comporte une partie (13 ; 53) de raccordement à la carte de forme sensiblement tubulaire, munie de deux fentes (14 ; 54) diamétralement opposées qui séparent ladite partie de raccordement en deux mâchoires (16 ; 56) agencées pour pincer entre elles ladite carte introduite par son bord (5 ; 45) entre lesdites mâchoires et par le fait que le contact central (11 ; 51) comporte une partie (24 ; 64) de raccordement à la carte en forme de pince, dans laquelle s'engage le bord de la carte lorsqu'il est introduit entre les deux mâchoires du contact externe.Device for electrically connecting a coaxial line to a circuit board printed (1; 41) comprising at least two conductive tracks (2, 3, 4; 42, 43, 44) each extending to an edge (5; 45) of said card, the device comprising a external contact (9; 49) and a central contact (11; 51) housed inside the contact external, characterized in that the external contact (9; 49) has a part (13; 53) for connection to the substantially tubular card, provided with two slots (14; 54) diametrically opposed which separate said connection part in two jaws (16; 56) arranged to pinch together said card inserted by its edge (5; 45) between said jaws and in that the central contact (11; 51) comprises a part (24; 64) for connection to the card in the form of a clamp, in which engages the edge of the card when it is inserted between the two jaws of the external contact. Dispositif selon la revendication 1, caractérisé par le fait que le contact externe (9 ; 49) du dispositif est réalisé par décolletage.Device according to claim 1, characterized in that the contact external (9; 49) of the device is made by turning. Dispositif selon la revendication 1, caractérisé par le fait que le contact externe est réalisé par découpage et roulage d'une feuille métallique.Device according to claim 1, characterized in that the contact external is produced by cutting and rolling a metal sheet. Dispositif selon l'une quelconque des revendications 1 et 3, caractérisé par le fait que le contact central (11 ; 51) est réalisé par découpage, roulage et/ou pliage d'une feuille métallique.Device according to either of Claims 1 and 3, characterized by the fact that the central contact (11; 51) is produced by cutting, rolling and / or folding of a metal sheet. Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé par le fait qu'il est agencé pour être monté sur un panneau (7 ; 47) voisin de la carte de circuit imprimé, de manière que ledit panneau supporte le dispositif et libère ses parties de raccordement montées sur le bord de la carte des contraintes mécaniques résultant de la présence d'un câble coaxial (40).Device according to any one of Claims 1 to 4, characterized by the that it is designed to be mounted on a panel (7; 47) adjacent to the circuit board printed, so that said panel supports the device and frees its parts from connection mounted on the edge of the card mechanical stresses resulting from the presence of a coaxial cable (40).
EP00401396A 1999-05-20 2000-05-19 Device for electrically connecting a coaxial line to a printed circuit board Withdrawn EP1054479A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9906400 1999-05-20
FR9906400A FR2793955B1 (en) 1999-05-20 1999-05-20 DEVICE FOR ELECTRICALLY CONNECTING A COAXIAL LINE TO A PRINTED CIRCUIT BOARD

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US (1) US6238218B1 (en)
EP (1) EP1054479A1 (en)
JP (1) JP2000353559A (en)
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FR (1) FR2793955B1 (en)

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Also Published As

Publication number Publication date
FR2793955B1 (en) 2001-07-13
CN1156944C (en) 2004-07-07
US6238218B1 (en) 2001-05-29
DE1054479T1 (en) 2001-07-19
CN1274967A (en) 2000-11-29
JP2000353559A (en) 2000-12-19
FR2793955A1 (en) 2000-11-24

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