EP1028490A1 - Coaxial connector for connecting two printed circuit boards - Google Patents

Coaxial connector for connecting two printed circuit boards Download PDF

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Publication number
EP1028490A1
EP1028490A1 EP00400335A EP00400335A EP1028490A1 EP 1028490 A1 EP1028490 A1 EP 1028490A1 EP 00400335 A EP00400335 A EP 00400335A EP 00400335 A EP00400335 A EP 00400335A EP 1028490 A1 EP1028490 A1 EP 1028490A1
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EP
European Patent Office
Prior art keywords
conductor
printed circuit
fitting according
contact
fact
Prior art date
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Granted
Application number
EP00400335A
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German (de)
French (fr)
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EP1028490B1 (en
Inventor
Olivier Gonzales
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Radiall SA
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Radiall SA
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • 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
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/52—Fixed connections for rigid printed circuits or like structures connecting to other rigid printed circuits or like structures
    • 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
    • H01R12/7082—Coupling device supported only by cooperation with PCB
    • 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 present invention relates to a coaxial connection for connecting two cards of printed circuit board.
  • coaxial connectors which are devices of the type consisting of two connector elements, which are each soldered on a printed circuit and can mate with each other when the two cards are brought together printed circuit from each other.
  • each connector element must be exactly in the axis of the connector element with which it must be coupled, which is only possible if the relative positions of the connector elements together on a card, are strictly identical to the relative positions of the corresponding connector elements on the other card.
  • the coupling interface must have exactly the same clearance. axial from one connector to another, which is not easy to obtain even if the connectors are all identical because two connector elements on the same card do not are not necessarily strictly in the same plane, due in particular to their soldering on the board.
  • the known coaxial connectors have a relatively high important in the connected state, which sets a lower limit to the distance at which it is possible to bring together the two printed circuit boards thus connected.
  • the present invention aims to provide a coaxial connection between two cards of printed circuit which does not have the drawbacks mentioned above and provides by elsewhere other advantages which will appear in the following description.
  • the mounting lugs and / or the contact lugs may be subject to card tracks or coming under pressure against them.
  • the contact tabs are shaped into elastically deformable tabs extending from the conductor in a direction oblique to the plane of the two printed circuit boards and finished by a support zone substantially parallel to the plane of the two printed circuit boards, support zone by which said contact tabs are applied against the second printed circuit board.
  • the electrical contact between the contact tabs and the conductive tracks of the second printed circuit board are established by putting the contact tabs in pressure against the tracks of the second card at the moment when this last is close to the first contact card.
  • This embodiment has the advantage of absorbing positioning differences between the two printed circuit boards, especially in the case where the two boards circuit boards are connected by several coaxial connections according to the invention.
  • each support zone comes into contact of a conductive track of the second printed circuit board by sliding slightly against this track due to the deformation of the tongue, which leads to self-cleaning contact surfaces and guarantees a good electrical connection between the tabs contact and conductive tracks.
  • the two printed circuit boards can be separated from each other without the connection being subjected to any traction, which preserves the mounting tabs for mechanical pull-out stresses.
  • These latter mounting lugs can, according to the invention, be subject to the first printed circuit board by soldering or surface welding of the circuit board printed or by soldering or welding in metallized holes of the latter.
  • the subjugation can also be achieved by force insertion into metallized holes using press-fit pins.
  • the external conductor is made in one piece by cutting and rolling a metal sheet.
  • the internal conductor is formed by a curved metal strip at each of its ends, these curved parts constituting the contact tab and the mounting tab of the internal conductor.
  • the through passage of the tubular insulation can advantageously be offset to the external conductor to lengthen the contact tabs and mounting the internal conductor without increasing the overall size of the fitting on the menu.
  • the strip constituting the internal conductor is rolled in its middle part lying between the contact tab and the mounting tab, so as to constitute a more rigid tubular internal conductor.
  • the contact tabs and / or the mounting lugs are curved towards the inside of the cylinder constituting the conductor external, in order to reduce the size of the connector on the card.
  • the tubular insulator is made by simple molding and is assembled with the internal and external conductors.
  • the insulation may include a lateral slit connecting its through passage to one of its generators and allowing the introduction by radial translation of the internal conductor.
  • a slot is particularly useful when the contact tabs and mounting of the internal conductor have already been bent and are no longer in the axis of its middle part.
  • the internal conductor When the mounting and contact tabs are in the extension from the middle part of the internal conductor, the internal conductor can be inserted into the through passage of the insulation by axial translation.
  • the tubular insulation is produced by overmolding around the internal conductor.
  • the tubular insulation comprising or not the internal conductor, is introduced into the external conductor where it is retained by snap-in.
  • the tubular insulation is produced by overmolding on the internal conductor and on the external conductor, suitably positioned in relation to each other in the mold, which makes it possible to obtain the connector according to the invention in a single molding operation, without any operation for mounting or assembling between the various constituent parts of the fitting is required.
  • the overmolding of the internal and external conductors may be accompanied by the formation of an insulating envelope covering the outer wall of the external conductor.
  • the tubular insulation has, on the side of the second external conductor base, a flat surface giving grip to suction nozzles of a "pick and place” type gripping device, which is commonly used in the field of the invention.
  • the coaxial connection according to the invention has a structure which allows it give very small dimensions and use it in miniature applications such than telephony.
  • the connector according to the invention may have a height overall of the order of 3mm.
  • the coaxial connection 1 comprises an external conductor 2 formed by cutting and rolling a metal strip into a cylinder split along one of its generators 3.
  • two legs mounting 5 extend perpendicularly to the axis of said cylinder, towards the outside thereof.
  • two contact tabs 7 extend in an oblique direction with respect to the axis of the cylinder, also towards the outside thereof.
  • Each contact tab 7 ends in a flat support zone 8 in the form portion of ring coaxial with the cylinder, which is substantially perpendicular to the axis of the cylinder.
  • each mounting tab 5 is the projection along the axis of the cylinder of one of the contact tabs 7.
  • the connector 1 also includes an internal conductor 9 which is a strip "strip line” type curved at each of its ends to form on the one hand a mounting lug 10 extending perpendicular to the axis of the cylinder and on the other hand a contact tab 11 inclined and terminated by a support zone 12 similar to those of contact tabs of the external conductor.
  • an internal conductor 9 which is a strip "strip line” type curved at each of its ends to form on the one hand a mounting lug 10 extending perpendicular to the axis of the cylinder and on the other hand a contact tab 11 inclined and terminated by a support zone 12 similar to those of contact tabs of the external conductor.
  • the middle part of the internal conductor 9 is embedded in a tubular insulator 13 made around this middle part by overmolding then inserted with the conductor internal 9 inside the external conductor 2.
  • the insulation is held axially in the external conductor by snap-fastening, thanks to suitable cutouts (not shown in Figures 1 and 2) made in the wall of the external conductor, as will be described with reference to Figures 3 at 5.
  • the mounting tabs 5, 10 are brazed to conductive tracks of a first printed circuit board 14, while the tabs contact 7, 11 are located opposite a second parallel printed circuit board 15 to the first.
  • the mounting tabs 5 of the external conductor 2 are offset by relative to the axis of the cylinder in the direction opposite to the mounting tab 10 of the conductor internal, they form, with this mounting tab of the internal conductor, a triangle of lift whose barycenter corresponds substantially to the projection along the axis of the cylinder the center of gravity of the fitting.
  • this arrangement of the mounting lugs ensures that each of them rests properly against the first printed circuit board.
  • the electrical contacting of the contact tabs 7, 11 with the conductive tracks of the second printed circuit board 15 is effected by bringing the two together cards from each other and overwriting the contact tabs 7, 11.
  • the driver external 2 ′ is substantially identical to the external conductor previously described, with the difference that its side slot 3 'is wider, which reduces the measurement in which it must be deformed to allow the axial introduction of the tubular insulation 13 ' surrounding the internal conductor.
  • the external conductor 2 has, on each edge of its slot, harpoons 16 cut in the thickness of its wall and directed towards the inside of the cylinder to bear on a shoulder 17 of the tubular insulation cut for this purpose opposite of said harpoons.
  • the tubular insulation 13 ' is here produced by simple molding and has a slot lateral 18 which extends from one of its generatrices to beyond its axis.
  • the slot 18 opens outwards through a chamfer 19 which allows the introduction in force of the internal conductor 9 with its curved ends forming the tab mounting 10 and contact tab 11.
  • the internal conductor 9 has one or more bosses 20 in its part median projecting from its face opposite the mounting and contact tabs.
  • the slit in the tubular insulation is wider than the thickness of the strip constituting the internal conductor but smaller than the overall thickness of this internal conductor, including bosses.
  • the bosses 20 immobilize the internal conductor in the insulation.
  • This internal conductor has a rolled middle portion 22 which gives it a cylindrical shape.
  • This cylindrical shape has several advantages.
  • the connector 2 has 7 “and 11" contact tabs curved inwards, which makes it possible to limit the bulk overall of the fitting, which is also identical to that of FIGS. 3 to 5.
  • the connector could include tabs of assembly shaped like the contact tabs 7 "and 11" of FIGS. 7 and 8. In this case, maintaining the connection between the two cards would be ensured by mechanical means distinct from the legs, since not all of its legs would be connected to the tracks of the cards only by simple pressurization.

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  • Coupling Device And Connection With Printed Circuit (AREA)
  • Multi-Conductor Connections (AREA)

Abstract

The coaxial connector provides connection between two printed circuit boards. The connector has outer tubing (2) with extended feet (5,7) at each end connecting to conductor tracks. An inner isolated tubing provides the inner connection and has connection feet (10,11) contacting the conductor tracks.

Description

La présente invention concerne un raccord coaxial pour relier deux cartes de circuit imprimé.The present invention relates to a coaxial connection for connecting two cards of printed circuit board.

Pour établir une liaison coaxiale entre deux cartes de circuit imprimé parallèles et voisines, on connaít les connecteurs coaxiaux, qui sont des dispositifs du type constitué par deux éléments de connecteur, lesquels sont brasés chacun sur une carte de circuit imprimé et peuvent s'accoupler l'un à l'autre lorsqu'on rapproche les deux cartes de circuit imprimé l'une de l'autre.To establish a coaxial connection between two parallel printed circuit boards and neighbors, we know the coaxial connectors, which are devices of the type consisting of two connector elements, which are each soldered on a printed circuit and can mate with each other when the two cards are brought together printed circuit from each other.

Ces connecteurs coaxiaux donnent satisfaction en ce qui concerne leurs propriétés électriques.These coaxial connectors are satisfactory with regard to their properties electric.

En revanche, ils soulèvent quelques difficultés lorsqu'il s'agit d'en disposer une pluralité entre deux cartes de circuit imprimé car le mode d'accouplement de leurs éléments de connecteur requiert un positionnement très précis de chacun d'eux sur les cartes.On the other hand, they raise some difficulties when it comes to disposing of them a plurality between two printed circuit boards because the mode of coupling of their connector elements requires very precise positioning of each of them on the cards.

En effet, chaque élément de connecteur doit se trouver exactement dans l'axe de l'élément de connecteur avec lequel il doit s'accoupler, ce qui n'est possible que si les positions relatives des éléments de connecteur entre eux sur une carte, sont rigoureusement identiques aux positions relatives des éléments de connecteur correspondant sur l'autre carte.Indeed, each connector element must be exactly in the axis of the connector element with which it must be coupled, which is only possible if the relative positions of the connector elements together on a card, are strictly identical to the relative positions of the corresponding connector elements on the other card.

En outre, l'interface d'accouplement doit présenter exactement le même débattement axial d'un connecteur à l'autre, ce qui n'est pas facile à obtenir même si les connecteurs sont tous identiques car deux éléments de connecteurs d'une même carte ne se trouvent pas forcément rigoureusement dans le même plan, du fait notamment de leur brasage sur la carte.In addition, the coupling interface must have exactly the same clearance. axial from one connector to another, which is not easy to obtain even if the connectors are all identical because two connector elements on the same card do not are not necessarily strictly in the same plane, due in particular to their soldering on the board.

Par ailleurs, les connecteurs coaxiaux connus ont une hauteur relativement importante à l'état connecté, ce qui fixe une limite inférieure à la distance à laquelle il est possible de rapprocher les deux cartes de circuit imprimé ainsi connectées.Furthermore, the known coaxial connectors have a relatively high important in the connected state, which sets a lower limit to the distance at which it is possible to bring together the two printed circuit boards thus connected.

Enfin, les éléments de connecteur d'un connecteur coaxial présentent chacun une certaine complexité de structure qui rend ces connecteurs relativement délicats et coûteux à fabriquer. Finally, the connector elements of a coaxial connector each have a certain structural complexity which makes these connectors relatively delicate and expensive to manufacture.

La présente invention vise à fournir un raccord coaxial entre deux cartes de circuit imprimé qui ne présente pas les inconvénients rappelés ci-dessus et procure par ailleurs d'autres avantages qui apparaítront dans la suite de la description.The present invention aims to provide a coaxial connection between two cards of printed circuit which does not have the drawbacks mentioned above and provides by elsewhere other advantages which will appear in the following description.

La présente invention a pour objet un raccord coaxial pour relier deux cartes de circuit imprimé qui est caractérisé par le fait qu'il comporte :

  • un conducteur externe cylindrique, muni, à une première de ses deux bases, d'au moins une patte de montage destinée à entrer en contact électrique avec une piste conductrice d'une première carte de circuit imprimé et, à sa seconde base, d'au moins une patte de contact destinée à entrer en contact électrique avec une piste conductrice d'une seconde carte de circuit imprimé,
  • un isolant tubulaire logé à l'intérieur dudit conducteur externe et dans lequel est ménagé un passage traversant s'étendant d'une base à l'autre dudit conducteur externe et
  • un conducteur interne logé dans le passage traversant de l'isolant tubulaire et comportant, dépassant de l'isolant tubulaire du côté de la première base du conducteur externe, une patte de montage destinée à entrer en contact électrique avec une piste conductrice de la première carte de circuit imprimé et, dépassant de l'isolant tubulaire du côté de la seconde base du conducteur externe, une patte de contact destinée à entrer en contact électrique avec une piste conductrice de la seconde carte de circuit imprimé.
The subject of the present invention is a coaxial connection for connecting two printed circuit boards which is characterized in that it comprises:
  • a cylindrical external conductor, provided, at a first of its two bases, with at least one mounting tab intended to come into electrical contact with a conductive track of a first printed circuit board and, at its second base, at least one contact tab intended to come into electrical contact with a conductive track of a second printed circuit board,
  • a tubular insulator housed inside said external conductor and in which is formed a through passage extending from one base to the other of said external conductor and
  • an internal conductor housed in the through passage of the tubular insulation and comprising, projecting from the tubular insulation on the side of the first base of the external conductor, a mounting lug intended to come into electrical contact with a conductive track of the first card printed circuit board and, projecting from the tubular insulation on the side of the second base of the external conductor, a contact tab intended to come into electrical contact with a conductive track of the second printed circuit board.

Les pattes de montage et/ou les pattes de contact peuvent être assujetties aux pistes des cartes ou venir en pression contre celles-ci.The mounting lugs and / or the contact lugs may be subject to card tracks or coming under pressure against them.

Dans un mode de réalisation particulier de l'invention, les pattes de contact sont conformées en languettes élastiquement déformables s'étendant depuis le conducteur dans une direction oblique par rapport au plan des deux cartes de circuit imprimé et terminées par une zone d'appui sensiblement parallèle au plan des deux cartes de circuit imprimé, zone d'appui par laquelle lesdites pattes de contact viennent s'appliquer contre la seconde carte de circuit imprimé.In a particular embodiment of the invention, the contact tabs are shaped into elastically deformable tabs extending from the conductor in a direction oblique to the plane of the two printed circuit boards and finished by a support zone substantially parallel to the plane of the two printed circuit boards, support zone by which said contact tabs are applied against the second printed circuit board.

Dans ce mode de réalisation, le contact électrique entre les pattes de contact et les pistes conductrices de la seconde carte de circuit imprimé s'établissent en mettant les pattes de contact en pression contre les pistes de la seconde carte au moment où cette dernière est rapprochée de la première carte de contact.In this embodiment, the electrical contact between the contact tabs and the conductive tracks of the second printed circuit board are established by putting the contact tabs in pressure against the tracks of the second card at the moment when this last is close to the first contact card.

Ce mode de réalisation présente l'avantage d'absorber les écarts de positionnement entre les deux cartes de circuit imprimé, notamment dans le cas où les deux cartes de circuit imprimé sont reliées par plusieurs raccords coaxiaux selon l'invention.This embodiment has the advantage of absorbing positioning differences between the two printed circuit boards, especially in the case where the two boards circuit boards are connected by several coaxial connections according to the invention.

En outre, dans ce mode de réalisation, chaque zone d'appui vient au contact d'une piste conductrice de la seconde carte de circuit imprimé en effectuant un léger glissement contre cette piste du fait de la déformation de la languette, ce qui entraíne un auto-nettoyage des surfaces de contact et garantit une bonne liaison électrique entre les pattes de contact et les pistes conductrices.In addition, in this embodiment, each support zone comes into contact of a conductive track of the second printed circuit board by sliding slightly against this track due to the deformation of the tongue, which leads to self-cleaning contact surfaces and guarantees a good electrical connection between the tabs contact and conductive tracks.

Dans ce mode de réalisation, les deux cartes de circuit imprimé peuvent être séparées l'une de l'autre sans que le raccord ne subisse aucune traction, ce qui préserve les pattes de montage de sollicitations mécaniques d'arrachement.In this embodiment, the two printed circuit boards can be separated from each other without the connection being subjected to any traction, which preserves the mounting tabs for mechanical pull-out stresses.

Ces dernières pattes de montage peuvent, selon l'invention, être assujetties à la première carte de circuit imprimé par brasure ou soudage en surface de la carte de circuit imprimé ou par brasure ou soudage dans des trous métallisés de cette dernière.These latter mounting lugs can, according to the invention, be subject to the first printed circuit board by soldering or surface welding of the circuit board printed or by soldering or welding in metallized holes of the latter.

L'assujettissement peut également être réalisé par insertion en force dans des trous métallisés à l'aide de broches de type "press-fit".The subjugation can also be achieved by force insertion into metallized holes using press-fit pins.

Dans un mode de réalisation préféré de l'invention, le conducteur externe est réalisé d'un seul tenant par découpage et roulage d'une feuille métallique.In a preferred embodiment of the invention, the external conductor is made in one piece by cutting and rolling a metal sheet.

Dans un autre mode de réalisation de l'invention, compatible avec le précédent, le conducteur interne est formé par une bande métallique recourbée à chacune de ses extrémités, ces parties recourbées constituant la patte de contact et la patte de montage du conducteur interne.In another embodiment of the invention, compatible with the previous one, the internal conductor is formed by a curved metal strip at each of its ends, these curved parts constituting the contact tab and the mounting tab of the internal conductor.

Dans un tel cas, le passage traversant de l'isolant tubulaire peut être avantageusement désaxé par rapport au conducteur externe pour allonger les pattes de contact et de montage du conducteur interne sans accroítre l'encombrement global du raccord sur la carte.In such a case, the through passage of the tubular insulation can advantageously be offset to the external conductor to lengthen the contact tabs and mounting the internal conductor without increasing the overall size of the fitting on the menu.

Dans une variante particulière de ce mode de réalisation, la bande constituant le conducteur interne est roulée dans sa partie médiane comprise entre la patte de contact et la patte de montage, de manière à constituer un conducteur interne tubulaire plus rigide.In a particular variant of this embodiment, the strip constituting the internal conductor is rolled in its middle part lying between the contact tab and the mounting tab, so as to constitute a more rigid tubular internal conductor.

Dans un autre mode de réalisation de l'invention, les pattes de contact et/ou les pattes de montage sont recourbées vers l'intérieur du cylindre constituant le conducteur externe, afin de réduire l'encombrement du raccord sur la carte. In another embodiment of the invention, the contact tabs and / or the mounting lugs are curved towards the inside of the cylinder constituting the conductor external, in order to reduce the size of the connector on the card.

Dans un premier mode de réalisation particulier de l'invention, l'isolant tubulaire est réalisé par simple moulage et s'assemble avec les conducteurs interne et externe.In a first particular embodiment of the invention, the tubular insulator is made by simple molding and is assembled with the internal and external conductors.

A cet effet, l'isolant peut comporter une fente latérale reliant son passage traversant à l'une de ses génératrices et permettant l'introduction par translation radiale du conducteur interne. Une telle fente est particulièrement utile lorsque les pattes de contact et de montage du conducteur interne ont déjà été recourbées et ne se trouvent plus dans l'axe de sa partie médiane.For this purpose, the insulation may include a lateral slit connecting its through passage to one of its generators and allowing the introduction by radial translation of the internal conductor. Such a slot is particularly useful when the contact tabs and mounting of the internal conductor have already been bent and are no longer in the axis of its middle part.

Lorsque les pattes de montage et de contact se trouvent dans le prolongement de la partie médiane du conducteur interne, le conducteur interne peut être introduit dans le passage traversant de l'isolant par translation axiale.When the mounting and contact tabs are in the extension from the middle part of the internal conductor, the internal conductor can be inserted into the through passage of the insulation by axial translation.

Dans un deuxième mode de réalisation particulier de l'invention, l'isolant tubulaire est réalisé par surmoulage autour du conducteur interne.In a second particular embodiment of the invention, the tubular insulation is produced by overmolding around the internal conductor.

Dans les deux modes de réalisation précédents, l'isolant tubulaire, comportant ou non le conducteur interne, est introduit dans le conducteur externe où il est retenu par encliquetage.In the two previous embodiments, the tubular insulation, comprising or not the internal conductor, is introduced into the external conductor where it is retained by snap-in.

Dans un troisième mode de réalisation particulier de l'invention, l'isolant tubulaire est réalisé par surmoulage sur le conducteur interne et sur le conducteur externe, convenablement positionnés l'un par rapport à l'autre dans le moule, ce qui permet d'obtenir le raccord selon l'invention en une seule opération de moulage, sans qu'aucune opération de montage ou d'assemblage entre les différentes parties constitutives du raccord ne soit requise.In a third particular embodiment of the invention, the tubular insulation is produced by overmolding on the internal conductor and on the external conductor, suitably positioned in relation to each other in the mold, which makes it possible to obtain the connector according to the invention in a single molding operation, without any operation for mounting or assembling between the various constituent parts of the fitting is required.

Dans ce mode de réalisation, le surmoulage des conducteurs interne et externe peut s'accompagner de la formation d'une enveloppe isolante recouvrant la paroi extérieure du conducteur externe.In this embodiment, the overmolding of the internal and external conductors may be accompanied by the formation of an insulating envelope covering the outer wall of the external conductor.

Dans un mode de réalisation particulier de l'invention, l'isolant tubulaire présente, du côté de la seconde base de conducteur externe, une surface plane donnant prise à des buses d'aspiration d'un dispositif de préhension de type "pick and place", qui est couramment utilisé dans le domaine de l'invention.In a particular embodiment of the invention, the tubular insulation has, on the side of the second external conductor base, a flat surface giving grip to suction nozzles of a "pick and place" type gripping device, which is commonly used in the field of the invention.

Le raccord coaxial selon l'invention présente une structure qui permet de lui donner de très petites dimensions et de l'utiliser dans des applications miniatures telles que la téléphonie. A titre d'exemple, le raccord selon l'invention peut présenter une hauteur hors tout de l'ordre de 3mm. The coaxial connection according to the invention has a structure which allows it give very small dimensions and use it in miniature applications such than telephony. For example, the connector according to the invention may have a height overall of the order of 3mm.

Sa grande simplicité structurelle permet en outre de le réaliser par des moyens simples et économiques tout en lui conférant une grande fiabilité.Its great structural simplicity also makes it possible to achieve it by means simple and economical while giving it great reliability.

Dans le but de mieux faire comprendre l'invention, on va en décrire maintenant des modes de réalisation donnés à titre d'exemples non limitatifs de la portée de l'invention, en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue en perspective d'un raccord selon un premier mode de réalisation de l'invention,
  • la figure 2 est une vue en élévation latérale du raccord de la figure 1 utilisé pour relier électriquement deux cartes de circuit imprimé,
  • la figure 3 est une vue analogue à la figure 1 représentant un raccord selon un autre mode de réalisation de l'invention,
  • la figure 4 est une vue en élévation latérale selon la flèche IV du raccord de la figure 3,
  • la figure 5 est une vue de dessus de la figure 4,
  • la figure 6 représente, en perspective, une partie d'un conducteur interne selon un autre mode de réalisation de l'invention,
  • la figure 7 est une vue en perspective d'un raccord selon un autre mode de réalisation de l'invention,
  • la figure 8 est une vue en élévation du raccord de la figure 7.
In order to better understand the invention, we will now describe embodiments given by way of non-limiting examples of the scope of the invention, with reference to the accompanying drawings in which:
  • FIG. 1 is a perspective view of a connector according to a first embodiment of the invention,
  • FIG. 2 is a side elevation view of the connector of FIG. 1 used to electrically connect two printed circuit boards,
  • FIG. 3 is a view similar to FIG. 1 showing a connector according to another embodiment of the invention,
  • FIG. 4 is a side elevation view along arrow IV of the connector of FIG. 3,
  • FIG. 5 is a top view of FIG. 4,
  • FIG. 6 represents, in perspective, part of an internal conductor according to another embodiment of the invention,
  • FIG. 7 is a perspective view of a connector according to another embodiment of the invention,
  • FIG. 8 is an elevation view of the connector of FIG. 7.

Dans le mode de réalisation des figures 1 et 2, le raccord coaxial 1 comprend un conducteur externe 2 formé par découpage et roulage d'une bande métallique en un cylindre fendu selon une de ses génératrices 3.In the embodiment of Figures 1 and 2, the coaxial connection 1 comprises an external conductor 2 formed by cutting and rolling a metal strip into a cylinder split along one of its generators 3.

A la base inférieure 4 (par rapport au dessin) du cylindre, deux pattes de montage 5 s'étendent perpendiculairement à l'axe dudit cylindre, vers l'extérieur de celui-ci.At the lower base 4 (with respect to the drawing) of the cylinder, two legs mounting 5 extend perpendicularly to the axis of said cylinder, towards the outside thereof.

A la base supérieure 6 du cylindre, deux pattes de contact 7 s'étendent dans une direction oblique par rapport à l'axe du cylindre, également vers l'extérieur de celui-ci.At the upper base 6 of the cylinder, two contact tabs 7 extend in an oblique direction with respect to the axis of the cylinder, also towards the outside thereof.

Chaque patte de contact 7 se termine par une zone d'appui plane 8 en forme de portion d'anneau coaxiale au cylindre, qui est sensiblement perpendiculaire à l'axe du cylindre.Each contact tab 7 ends in a flat support zone 8 in the form portion of ring coaxial with the cylinder, which is substantially perpendicular to the axis of the cylinder.

On remarque que chaque patte de montage 5 est la projection suivant l'axe du cylindre d'une des pattes de contact 7.Note that each mounting tab 5 is the projection along the axis of the cylinder of one of the contact tabs 7.

Le raccord 1 comporte également un conducteur interne 9 qui est une bande de type "strip line" recourbée à chacune de ses extrémités pour former d'une part une patte de montage 10 s'étendant perpendiculairement à l'axe du cylindre et d'autre part une patte de contact 11 inclinée et terminée par une zone d'appui 12 similaire à celles des pattes de contact du conducteur externe.The connector 1 also includes an internal conductor 9 which is a strip "strip line" type curved at each of its ends to form on the one hand a mounting lug 10 extending perpendicular to the axis of the cylinder and on the other hand a contact tab 11 inclined and terminated by a support zone 12 similar to those of contact tabs of the external conductor.

La partie médiane du conducteur interne 9 est noyée dans un isolant tubulaire 13 réalisé autour de cette partie médiane par surmoulage puis inséré avec le conducteur interne 9 à l'intérieur du conducteur externe 2.The middle part of the internal conductor 9 is embedded in a tubular insulator 13 made around this middle part by overmolding then inserted with the conductor internal 9 inside the external conductor 2.

L'introduction de l'isolant dans le conducteur externe peut s'opérer de deux manières différentes.There are two ways to insert insulation into the external conductor different ways.

On peut, d'une part, écarter les bords en regard de la fente latérale 3 du conducteur externe en déformant ce dernier élastiquement pour introduire l'isolant et le conducteur interne axialement, les pattes de montage 10 et de contact 11 du conducteur interne se trouvant à la verticale de la fente 3 ainsi agrandie.One can, on the one hand, spread the edges opposite the lateral slot 3 of the conductor external by deforming the latter elastically to introduce the insulation and the conductor internally axially, the mounting lugs 10 and the contact lugs 11 of the conductor internal located vertically from the slot 3 thus enlarged.

On peut, d'autre part, insérer axialement l'isolant dans le conducteur externe avant de recourber l'une au moins des pattes de contact et de montage du conducteur interne, puis recourber cette patte une fois l'isolant mis en place dans le conducteur externe.It is also possible to insert the insulation axially in the external conductor. before bending at least one of the contact and mounting tabs of the internal conductor, then bend this tab once the insulation is in place in the external conductor.

L'isolant est maintenu axialement dans le conducteur externe par encliquetage, grâce à des découpes appropriées (non représentées sur les figures 1 et 2) réalisées dans la paroi du conducteur externe, comme cela sera décrit en référence aux figures 3 à 5.The insulation is held axially in the external conductor by snap-fastening, thanks to suitable cutouts (not shown in Figures 1 and 2) made in the wall of the external conductor, as will be described with reference to Figures 3 at 5.

Comme on le voit à la figure 2, les pattes de montage 5, 10 sont brasées sur des pistes conductrices d'une première carte de circuit imprimé 14, tandis que les pattes de contact 7, 11 se trouvent en regard d'une deuxième carte de circuit imprimé 15 parallèle à la première.As seen in Figure 2, the mounting tabs 5, 10 are brazed to conductive tracks of a first printed circuit board 14, while the tabs contact 7, 11 are located opposite a second parallel printed circuit board 15 to the first.

Du fait que les pattes de montage 5 du conducteur externe 2 sont décalées par rapport à l'axe du cylindre en direction opposée à la patte de montage 10 du conducteur interne, elles forment, avec cette patte de montage du conducteur interne, un triangle de sustentation dont le barycentre correspond sensiblement à la projection selon l'axe du cylindre du centre de gravité du raccord.Because the mounting tabs 5 of the external conductor 2 are offset by relative to the axis of the cylinder in the direction opposite to the mounting tab 10 of the conductor internal, they form, with this mounting tab of the internal conductor, a triangle of lift whose barycenter corresponds substantially to the projection along the axis of the cylinder the center of gravity of the fitting.

En d'autres termes, cet agencement des pattes de montage garantit que chacune d'elles repose convenablement contre la première carte de circuit imprimé.In other words, this arrangement of the mounting lugs ensures that each of them rests properly against the first printed circuit board.

Le même agencement des pattes de contact 7, 11 assure également que chacune d'elles peut s'appliquer contre la deuxième carte de circuit imprimé.The same arrangement of the contact tabs 7, 11 also ensures that each of them can be applied against the second printed circuit board.

La mise en contact électrique des pattes de contact 7, 11 avec les pistes conductrices de la deuxième carte de circuit imprimé 15 s'effectue en rapprochant les deux cartes l'une de l'autre et en écrasant les pattes de contact 7, 11.The electrical contacting of the contact tabs 7, 11 with the conductive tracks of the second printed circuit board 15 is effected by bringing the two together cards from each other and overwriting the contact tabs 7, 11.

Dans le mode de réalisation des figures 3, 4 et 5, sur lesquelles les éléments identiques à ceux précédemment décrits portent les mêmes numéros de référence, le conducteur externe 2' est sensiblement identique au conducteur externe précédemment décrit, à la différence près que sa fente latérale 3' est plus large, ce qui réduit la mesure dans laquelle il doit être déformé pour permettre l'introduction axiale de l'isolant tubulaire 13' entourant le conducteur interne.In the embodiment of Figures 3, 4 and 5, in which the elements identical to those previously described have the same reference numbers, the driver external 2 ′ is substantially identical to the external conductor previously described, with the difference that its side slot 3 'is wider, which reduces the measurement in which it must be deformed to allow the axial introduction of the tubular insulation 13 ' surrounding the internal conductor.

En outre, le conducteur externe 2' comporte, sur chaque bord de sa fente, des harpons 16 découpés dans l'épaisseur de sa paroi et dirigés vers l'intérieur du cylindre pour prendre appui sur un épaulement 17 de l'isolant tubulaire découpé à cet effet en regard desdits harpons.In addition, the external conductor 2 'has, on each edge of its slot, harpoons 16 cut in the thickness of its wall and directed towards the inside of the cylinder to bear on a shoulder 17 of the tubular insulation cut for this purpose opposite of said harpoons.

L'isolant tubulaire 13' est ici réalisé par simple moulage et comporte une fente latérale 18 qui s'étend depuis une de ses génératrices jusqu'au-delà de son axe.The tubular insulation 13 'is here produced by simple molding and has a slot lateral 18 which extends from one of its generatrices to beyond its axis.

La fente 18 débouche vers l'extérieur par un chanfrein 19 qui permet l'introduction en force du conducteur interne 9 avec ses extrémités recourbées formant la patte de montage 10 et la patte de contact 11.The slot 18 opens outwards through a chamfer 19 which allows the introduction in force of the internal conductor 9 with its curved ends forming the tab mounting 10 and contact tab 11.

Le conducteur interne 9 comporte un ou plusieurs bossages 20 dans sa partie médiane en saillie de sa face opposée aux pattes de montage et de contact.The internal conductor 9 has one or more bosses 20 in its part median projecting from its face opposite the mounting and contact tabs.

La fente de l'isolant tubulaire a une largeur plus grande que l'épaisseur de la bande constituant le conducteur interne mais plus petite que l'épaisseur hors-tout de ce conducteur interne, bossages compris. Les bossages 20 immobilisent le conducteur interne dans l'isolant.The slit in the tubular insulation is wider than the thickness of the strip constituting the internal conductor but smaller than the overall thickness of this internal conductor, including bosses. The bosses 20 immobilize the internal conductor in the insulation.

Le fonctionnement du raccord des figures 3, 4 et 5, est identique à celui du raccord de la figure 2.The operation of the connector of Figures 3, 4 and 5 is identical to that of Figure 2 fitting.

Sur la figure 6, on a représenté un conducteur interne 9" selon un autre mode de réalisation de l'invention.In Figure 6, there is shown an internal conductor 9 "according to another mode for carrying out the invention.

Ce conducteur interne comporte une partie médiane roulée 22 qui lui confère une forme cylindrique.This internal conductor has a rolled middle portion 22 which gives it a cylindrical shape.

Cette forme cylindrique présente plusieurs avantages.This cylindrical shape has several advantages.

Tout d'abord, elle est plus propice à la réalisation d'une ligne coaxiale.First, it is more conducive to achieving a coaxial line.

D'autre part, elle rigidifie la partie médiane du conducteur interne, ce qui a pour effet d'empêcher cette partie médiane de se courber sous l'effet de la pression subie par la seconde carte de circuit imprimé. Il en résulte que les seuls efforts que ce conducteur interne peut transmettre à sa patte de montage sont normaux aux plans des cartes de circuit imprimé, ce qui préserve la brasure de cette patte de montage de contraintes transversales qui seraient préjudiciables à sa longévité.On the other hand, it stiffens the middle part of the internal conductor, which has to prevent this middle part from bending under the effect of the pressure undergone by the second printed circuit board. It follows that the only efforts that this driver internal can transmit to its mounting tab are normal to the maps cards printed circuit, which preserves the soldering of this mounting lug from transverse stresses which would be detrimental to its longevity.

Dans les modes de réalisation précédents, le maintien de la partie médiane du conducteur interne parallèlement à l'axe du cylindre était assuré par l'isolant.In the previous embodiments, maintaining the middle part of the internal conductor parallel to the cylinder axis was provided by the insulation.

Dans le mode de réalisation des figures 7 et 8, le raccord 2" comporte des pattes de contact 7" et 11" recourbées vers l'intérieur, ce qui permet de limiter l'encombrement global du raccord, lequel est par ailleurs identique à celui des figures 3 à 5.In the embodiment of Figures 7 and 8, the connector 2 "has 7 "and 11" contact tabs curved inwards, which makes it possible to limit the bulk overall of the fitting, which is also identical to that of FIGS. 3 to 5.

Dans une variante non représentée, le raccord pourrait comporter des pattes de montage conformées comme les pattes de contact 7" et 11" des figures 7 et 8. Dans ce cas, le maintien du raccord entre les deux cartes serait assuré par un moyen mécanique distinct des pattes, étant donné que toutes ses pattes ne seraient reliées aux pistes des cartes que par simple mise en pression.In a variant not shown, the connector could include tabs of assembly shaped like the contact tabs 7 "and 11" of FIGS. 7 and 8. In this In this case, maintaining the connection between the two cards would be ensured by mechanical means distinct from the legs, since not all of its legs would be connected to the tracks of the cards only by simple pressurization.

Il est bien entendu que les modes de réalisation qui viennent d'être décrits ne présentent aucun caractère limitatif et qu'ils pourront recevoir toutes modifications désirables sans sortir pour cela du cadre de l'invention.It is understood that the embodiments which have just been described do not have no limiting nature and that they may receive any desirable modifications without departing from the scope of the invention.

Claims (15)

Raccord coaxial pour relier deux cartes de circuit imprimé (14, 15), caractérisé par le fait qu'il comporte : un conducteur externe cylindrique (2, 2'), muni, à une première (4) de ses deux bases, d'au moins une patte de montage (5) destinée à entrer en contact électrique avec une piste conductrice d'une première carte de circuit imprimé (14) et, à sa seconde base (6), d'au moins une patte de contact (7) destinée à entrer en contact électrique avec une piste conductrice d'une seconde carte de circuit imprimé (15), un isolant tubulaire (13, 13') logé à l'intérieur dudit conducteur externe et dans lequel est ménagé un passage traversant s'étendant d'une base à l'autre dudit conducteur externe et un conducteur interne (9, 9") logé dans le passage traversant de l'isolant tubulaire et comportant, dépassant de l'isolant tubulaire du côté de la première base du conducteur externe, une patte de montage (10) destinée à entrer en contact électrique avec une piste conductrice de la première carte de circuit imprimé (14) et, dépassant de l'isolant tubulaire du côté de la seconde base du conducteur externe, une patte de contact (11) destinée à entrer en contact électrique avec une piste conductrice de la seconde carte de circuit imprimé (15). Coaxial connection for connecting two printed circuit boards (14, 15), characterized in that it comprises: a cylindrical external conductor (2, 2 '), provided, at a first (4) of its two bases, with at least one mounting tab (5) intended to come into electrical contact with a conductive track of a first card of a printed circuit (14) and, at its second base (6), of at least one contact tab (7) intended to come into electrical contact with a conductive track of a second printed circuit board (15), a tubular insulator (13, 13 ′) housed inside said external conductor and in which is formed a through passage extending from one base to the other of said external conductor and an internal conductor (9, 9 ") housed in the through passage of the tubular insulation and comprising, protruding from the tubular insulation on the side of the first base of the external conductor, a mounting lug (10) intended to come into contact electric with a conductive track of the first printed circuit board (14) and, projecting from the tubular insulation on the side of the second base of the external conductor, a contact tab (11) intended to come into electrical contact with a conductive track of the second printed circuit board (15). Raccord selon la revendication 1, caractérisé par le fait que ses pattes de montage et/ou ses pattes de contact sont assujetties aux pistes des cartes ou mises en pression contre celles-ci.Fitting according to claim 1, characterized in that its tabs mounting and / or its contact tabs are subject to card tracks or pressurized against them. Raccord selon l'une quelconque des revendications 1 et 2, caractérisé par le fait que les pattes de contact (7, 11) sont conformées en languettes élastiquement déformables s'étendant depuis le conducteur (2, 2', 9, 9") dans une direction oblique par rapport au plan des deux cartes de circuit imprimé (14, 15) et terminées par une zone d'appui (8, 12) sensiblement parallèle au plan des deux cartes de circuit imprimé, zone d'appui par laquelle lesdites pattes de contact viennent s'appliquer contre la seconde carte de circuit imprimé (15). Fitting according to either of Claims 1 and 2, characterized by the fact that the contact tabs (7, 11) are shaped into resilient tongues deformable extending from the conductor (2, 2 ', 9, 9 ") in an oblique direction by relative to the plane of the two printed circuit boards (14, 15) and terminated by a zone support (8, 12) substantially parallel to the plane of the two printed circuit boards, area support by which said contact tabs are applied against the second card printed circuit board (15). Raccord selon l'une quelconque des revendications 1 à 3, caractérisé par le fait que les pattes de montage (5, 10) sont assujetties à la première carte de circuit imprimé (14) par brasure ou soudage en surface de la carte de circuit imprimé ou par brasure ou soudage dans des trous métallisés de cette dernière ou par insertion en force dans des trous métallisés à l'aide de broches de type "press-fit".Fitting according to any one of Claims 1 to 3, characterized by the fact that the mounting tabs (5, 10) are secured to the first printed circuit board (14) by soldering or soldering on the surface of the printed circuit board or by soldering or welding in metallized holes thereof or by force insertion into metallized holes using "press-fit" type pins. Raccord selon l'une quelconque des revendications 1 à 4, caractérisé par le fait que le conducteur externe (2, 2') est réalisé d'un seul tenant par découpage et roulage d'une feuille métallique.Fitting according to any one of Claims 1 to 4, characterized by the fact that the external conductor (2, 2 ') is made in one piece by cutting and rolling of a metal sheet. Raccord selon l'une quelconque des revendications 1 à 5, caractérisé par le fait que le conducteur interne (9, 9") est formé par une bande métallique recourbée à chacune de ses extrémités, ces parties recourbées constituant la patte de contact (11) et la patte de montage (10) du conducteur interne.Fitting according to any one of Claims 1 to 5, characterized by the fact that the internal conductor (9, 9 ") is formed by a curved metal strip at each of its ends, these curved parts constituting the contact tab (11) and the mounting tab (10) of the internal conductor. Raccord selon la revendication 6, caractérisé par le fait que le passage traversant de l'isolant tubulaire est désaxé par rapport au conducteur externe pour réaliser l'adaptation en impédance de la ligne coaxiale.Fitting according to claim 6, characterized in that the passage through tubular insulation is offset to the external conductor to achieve the impedance matching of the coaxial line. Raccord selon l'une quelconque des revendications 6 et 7, caractérisé par le fait que la bande constituant le conducteur interne (9") est roulée dans sa partie médiane comprise entre la patte de contact (11) et la patte de montage (10) , de manière à constituer un conducteur interne tubulaire.Fitting according to either of Claims 6 and 7, characterized in by the fact that the strip constituting the internal conductor (9 ") is rolled in its part midpoint between the contact tab (11) and the mounting tab (10), so that constitute a tubular internal conductor. Raccord selon l'une quelconque des revendications 1 à 8, caractérisé par le fait que l'isolant tubulaire (13, 13') est réalisé par simple moulage et s'assemble avec les conducteurs interne et externe.Fitting according to any one of Claims 1 to 8, characterized by the fact that the tubular insulation (13, 13 ') is produced by simple molding and is assembled with internal and external conductors. Raccord selon la revendication 9, caractérisé par le fait que l'isolant (13') comporte une fente latérale (18) reliant son passage traversant à l'une de ses génératrices et permettant l'introduction du conducteur interne (9) par translation radiale.Fitting according to claim 9, characterized in that the insulator (13 ') has a side slot (18) connecting its through passage to one of its generators and allowing the introduction of the internal conductor (9) by radial translation. Raccord selon l'une quelconque des revendications 1 à 8, caractérisé par le fait que l'isolant tubulaire (13) est réalisé par surmoulage autour du conducteur interne (9).Fitting according to any one of Claims 1 to 8, characterized by the fact that the tubular insulation (13) is produced by overmolding around the internal conductor (9). Raccord selon l'une quelconque des revendications 9 à 11, caractérisé par le fait que l'isolant tubulaire, comportant ou non le conducteur interne, est introduit dans le conducteur externe où il est retenu par encliquetage. Fitting according to any one of Claims 9 to 11, characterized by the fact that the tubular insulation, with or without the internal conductor, is introduced in the external conductor where it is retained by snap-fastening. Raccord selon l'une quelconque des revendications 1 à 8, caractérisé par le fait que l'isolant tubulaire est réalisé par surmoulage sur le conducteur interne et sur le conducteur externe, convenablement positionnés l'un par rapport à l'autre dans le moule.Fitting according to any one of Claims 1 to 8, characterized by the fact that the tubular insulation is produced by overmolding on the internal conductor and on the external conductor, suitably positioned in relation to each other in the mold. Raccord selon la revendication 13, caractérisé par le fait que le surmoulage des conducteurs interne et externe s'accompagne de la formation d'une enveloppe isolante recouvrant la paroi extérieure du conducteur externe.Fitting according to Claim 13, characterized in that the overmolding of internal and external conductors is accompanied by the formation of an envelope insulation covering the outer wall of the outer conductor. Raccord selon l'une quelconque des revendications 1 à 14, caractérisé par le fait que l'isolant tubulaire (13, 13') présente, du côté de la seconde base (6) de conducteur externe, une surface plane donnant prise à des buses d'aspiration d'un dispositif de préhension de type "pick and place".Fitting according to any one of Claims 1 to 14, characterized by the fact that the tubular insulation (13, 13 ') has, on the side of the second conductor base (6) external, a flat surface giving grip to the suction nozzles of a device "pick and place" type gripper.
EP00400335A 1999-02-11 2000-02-08 Coaxial connector for connecting two printed circuit boards Expired - Lifetime EP1028490B1 (en)

Applications Claiming Priority (2)

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FR9901635 1999-02-11
FR9901635A FR2789811B1 (en) 1999-02-11 1999-02-11 COAXIAL CONNECTION FOR CONNECTING TWO PRINTED CIRCUIT BOARDS

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EP1028490B1 EP1028490B1 (en) 2002-06-05

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EP (1) EP1028490B1 (en)
JP (1) JP2000243490A (en)
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AT (1) ATE218761T1 (en)
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US9160121B2 (en) 2011-03-08 2015-10-13 Huber+Suhner Ag High frequency coaxial connector
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Also Published As

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EP1028490B1 (en) 2002-06-05
FR2789811B1 (en) 2001-05-18
US6231352B1 (en) 2001-05-15
DE1028490T1 (en) 2001-03-15
DE60000187T2 (en) 2003-01-30
CN1148838C (en) 2004-05-05
FR2789811A1 (en) 2000-08-18
DE60000187D1 (en) 2002-07-11
ATE218761T1 (en) 2002-06-15
JP2000243490A (en) 2000-09-08
CN1266295A (en) 2000-09-13

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