EP0444567B1 - Device for connecting a coaxial cable to a printed circuit board without preparation of the cable - Google Patents

Device for connecting a coaxial cable to a printed circuit board without preparation of the cable Download PDF

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Publication number
EP0444567B1
EP0444567B1 EP91102720A EP91102720A EP0444567B1 EP 0444567 B1 EP0444567 B1 EP 0444567B1 EP 91102720 A EP91102720 A EP 91102720A EP 91102720 A EP91102720 A EP 91102720A EP 0444567 B1 EP0444567 B1 EP 0444567B1
Authority
EP
European Patent Office
Prior art keywords
cable
support
printed circuit
axis
cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91102720A
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German (de)
French (fr)
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EP0444567A1 (en
Inventor
Yannick Reze
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.)
Alcatel CIT SA
Original Assignee
Alcatel Mobile Communication France SA
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Filing date
Publication date
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Publication of EP0444567A1 publication Critical patent/EP0444567A1/en
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Publication of EP0444567B1 publication Critical patent/EP0444567B1/en
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Expired - Lifetime legal-status Critical Current

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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
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • H01R9/0515—Connection to a rigid planar substrate, e.g. printed circuit board

Definitions

  • the invention relates to a device for connecting a coaxial cable to a printed circuit, without preparing the cable, that is to say without having to strip the central conductor and the shielding braid.
  • a coaxial cable is connected to a printed circuit by means of a male coaxial plug and a female coaxial socket, the plug being fixed to one end of the coaxial cable, after prior stripping of the central conductor and the braid of shielding, and the base being fixed on the printed circuit by welds.
  • This known connection device is relatively expensive, since it comprises many parts, and its assembly is labor-intensive since it requires preparation of the cable.
  • the object of the invention is to propose a device which remedies these drawbacks and which can be mounted without specific tools.
  • the device thus allows mounting without preparation of the cable.
  • the central conductor does not need to be stripped since it is penetrated by a metal point driven along the axis of the cable.
  • the braid does not need to be stripped since the insulating sheath is crossed by an insulating displacement contact.
  • the assembly is carried out without specific tools, thanks to the means for guiding the cable, which ensure penetration of the tip along the axis of the central conductor, and thanks to the fact that the insulation displacement contact is constituted by the song of a cut in the shielding cover, which allows this contact to be crimped onto the cable by pressure exerted by hand on the shielding cover.
  • the device is easy to assemble, since the cable assembly consists of: inserting the blade nut into a slot in the support, then screwing the cable through the blade nut and through the cylindrical hole of the support to push the point into the central conductor strand.
  • the shielding cover consists of a single weldable sheet, cut to include a central plate and four peripheral plates; and folded to fold the four peripheral plates orthogonally to the central plate, on the same side with respect to the latter.
  • the device is particularly easy and inexpensive to make.
  • FIG. 1 connects a coaxial cable 4 to a printed circuit board 5.
  • the hidden parts are not shown, for clarity.
  • This exemplary embodiment comprises: a shielding cover 1, made of a sheet of nickel silver 0.3 mm thick, cut and folded; a blade nut 2, consisting of a nickel silver blade; and a support 3, molded in polyamide.
  • the blade nut 2 is inserted into a slot 29 in the support 3.
  • the cover 1 is shown disassembled, to reveal the support 3. When the cover 1 is mounted, it surrounds the support 3 to form an electrical shielding.
  • the cover 1 To facilitate mounting of the cover 1, it is guided by four faces of the support 3 which are orthogonal to the plate 5, such as the faces 31 and 33. For this, the dimensions of the support 3 are slightly smaller than the dimensions of the interior of the cover 1.
  • One of the faces of the cover 1 has a cutout, 6-8, which constitutes an insulation displacement contact. When the cover 1 is mounted, this cutout is crimped onto the cable 4.
  • the cover 1 has four welding pins, such as the pin 7. When the cover 1 is mounted, the four welding pins are inserted in the holes of the printed circuit board 5, such as holes 30 and 32. The pins 7 are soldered onto printed circuit pads, situated on the face opposite to that supporting the support 3.
  • FIG. 2 represents a sectional view of this exemplary embodiment, with the cover mounted, according to a section plane II II.
  • the cable 4 comprises: a central conductor 11 consisting of a strand of copper filaments; an insulating layer 12 covering the strand; a shielding braid 13 covering the layer 12; and a peripheral insulating sheath 14.
  • the cable 4 is disposed parallel to the plate 5, through a helical opening of the blade nut 2 and through a cylindrical hole 28 in the support 3.
  • the cable 4 has been screwed into the blade nut 2 to drive a point 27 into the strand of the central conductor 11.
  • the tip 27 is one end of a metal rod 26 partially embedded in the support 3, the point 27 protruding from the bottom of the hole 28.
  • the other end of this metal rod 26 constitutes a weldable pin 22 which passes through a hole 21 of the plate of the printed circuit 5, and which is welded to a patch 20.
  • This metal rod 26 is bent at right angles, so that the axis of the tip 27 is parallel to the plane of the plate 5 while the axis weldable pin 22 is orthogonal to this plate.
  • FIG. 2 also shows two of the welding pins, 7 and 23, of the cover 1. They pass through holes 16 and 25 of the plate 5, and are welded on pads 17 and 24 connected to the ground of the printed circuit, by connections not shown.
  • FIG. 3 represents the cover 1 in isolation. It is made of a single sheet of nickel silver, cut to include a central plate 37, and four peripheral plates, such as the plates 38 and 39.
  • the four peripheral plates are folded orthogonally with respect to the plate 37, on the same side with respect to the latter, so that the plate 37 constitutes the top of the cover while the peripheral plates constitute four sides of the cover.
  • the peripheral plate 38 includes the fork-shaped cutout, 6-8, constituting the insulation displacement contact.
  • This cutout includes a mouth 6 having a greater width of the cable 4, then decreasing to a groove 8 having a constant width less than the diameter of the cable 4, and equal to the diameter of the braid 13, so that when the cover 1 is crimped on the cable 4, the edge of the cutout 6-8 crosses the sheath 14 and clamps the braid shielding 13.
  • the plate 30, as well as the symmetrical plate with respect to the central plate 31, is extended by two tabs constituting welding pins, such as the pin 7.
  • FIG. 4 represents the blade nut 2 in isolation. It is constituted by a piece of nickel silver sheet, pierced with a helical opening 40 having a diameter slightly less than the diameter of the cable 4, and comprising a cut 41 perpendicular to the edge of the opening 40. The two edges of the cut 41 are slightly apart to give a helical shape to the opening 40.
  • the cable 4 is screwed into the opening 40, after the blade nut 2 has been placed in the slot 29 of the support 3.
  • the edge of the opening 40 bites and slightly deforms the sheath 14, because the latter has a certain elasticity.
  • FIG. 5 represents the support 3 in isolation. It consists of a block of molded polyamide, having a generally parallelepidic shape, comprising a slot 29 whose plane is perpendicular to the axis of the hole 28, and comprising a cutout 42 in the form of U.
  • the cutout 42 constitutes a recess having a generally planar shape and parallel to the plane of the slot 29. It is intended to facilitate the molding of the support 3, more particularly for molding the slot 29.
  • the scope of the invention is not limited to the embodiment described above. Many variant embodiments are within the reach of those skilled in the art.
  • the dimensions are also chosen according to the characteristic impedance of the cable to be connected.

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  • Multi-Conductor Connections (AREA)
  • Communication Cables (AREA)

Abstract

One embodiment comprises: - a screening cover (1), comprising a funnel-shaped cut-out (6,8), constituting an insulation-displacement contact, to be crimped over the cable (4) in order to pass through its sheath and to pinch the screening braid (13); the cover (1) being connectable to the earth of the printed circuit board (5) by solderable studs (7); - a support (3), made from plastic, comprising a blade nut (2) permitting screwing into the cable (4) in order to drive a metal point into the core of the central conductor (11) of the cable, this metal point being connected to a solderable stud located under the support (3). Application to the construction of electronic circuits. <IMAGE>

Description

L'invention concerne un dispositif pour raccorder un câble coaxial à un circuit imprimé, sans préparation du câble, c'est-à-dire sans avoir à dénuder le conducteur central et la tresse de blindage.The invention relates to a device for connecting a coaxial cable to a printed circuit, without preparing the cable, that is to say without having to strip the central conductor and the shielding braid.

Classiquement, un câble coaxial est raccordé à un circuit imprimé au moyen d'une prise coaxiale mâle et d'une embase coaxiale femelle, la prise étant fixée à une extrémité du câble coaxial, après un dénudage préalable du conducteur central et de la tresse de blindage, et l'embase étant fixée sur le circuit imprimé par des soudures. Ce dispositif de raccordement connu est relativement coûteux, car il comporte de nombreuses pièces, et son montage est coûteux en main d'oeuvre puisqu'il nécessite une préparation du câble.Conventionally, a coaxial cable is connected to a printed circuit by means of a male coaxial plug and a female coaxial socket, the plug being fixed to one end of the coaxial cable, after prior stripping of the central conductor and the braid of shielding, and the base being fixed on the printed circuit by welds. This known connection device is relatively expensive, since it comprises many parts, and its assembly is labor-intensive since it requires preparation of the cable.

Le but de l'invention est de proposer un dispositif qui remédie à ces inconvients et qui puisse être monté sans outillage spécifique.The object of the invention is to propose a device which remedies these drawbacks and which can be mounted without specific tools.

Selon l'invention, le dispositif pour raccorder un câble coaxial à un circuit imprimé, sans préparation du câble, le câble comportant un conducteur central constitué d'un toron, une couche isolante, une tresse de blindage, et une gaine isolante périphérique,
   comporte :

  • un conducteur dont une extrémité comporte une pointe et dont l'autre extrémité est soudable sur le circuit imprimé;
  • des moyens pour guider le câble selon une trajectoire hélicoïdale dont la direction de translation est dans l'axe du câble, et dans l' axe de la pointe, pour enfoncer la pointe dans le toron du conducteur central;
  • un capot de blindage entourant les moyens pour guider et comportant une découpe en forme de fourche constituant un contact à déplacement d'isolant, à sertir sur le câble pour traverser sa gaine et pincer la tresse, le capot étant raccordable à la masse du circuit imprimé par des picots soudables.
According to the invention, the device for connecting a coaxial cable to a printed circuit, without preparing the cable, the cable comprising a central conductor consisting of a strand, an insulating layer, a shielding braid, and a peripheral insulating sheath,
includes:
  • a conductor, one end of which has a tip and the other end of which is solderable to the printed circuit;
  • means for guiding the cable along a helical path, the direction of translation of which is in the axis of the cable, and in the axis of the tip, for driving the tip into the strand of the central conductor;
  • a shielding cover surrounding the means for guiding and comprising a fork-shaped cutout constituting an insulation displacement contact, to be crimped onto the cable to pass through its sheath and pinch the braid, the cover being connectable to the ground of the printed circuit by weldable pins.

Le dispositif permet ainsi un montage sans préparation du câble. Le conducteur central n'a pas besoin d'un dénudage puisqu'il est pénétré par une pointe métallique enfoncée selon l'axe du câble. La tresse n'a pas besoin d'être dénudée puisque la gaine isolante est traversée par un contact à déplacement d'isolant. Le montage est effectué sans outillage spécifique, grâce aux moyens pour guider le câble, qui assurent une pénétration de la pointe selon l'axe du conducteur central, et grâce au fait que le contact à déplacement d'isolant est constitué par le chant d'une découpe dans le capot de blindage, ce qui permet de sertir ce contact sur le câble par une pression exercée à la main sur le capot de blindage.The device thus allows mounting without preparation of the cable. The central conductor does not need to be stripped since it is penetrated by a metal point driven along the axis of the cable. The braid does not need to be stripped since the insulating sheath is crossed by an insulating displacement contact. The assembly is carried out without specific tools, thanks to the means for guiding the cable, which ensure penetration of the tip along the axis of the central conductor, and thanks to the fact that the insulation displacement contact is constituted by the song of a cut in the shielding cover, which allows this contact to be crimped onto the cable by pressure exerted by hand on the shielding cover.

Selon un mode de réalisation particulier, les moyens pour guider le câble comportent :

  • un support en matière plastique, comportant un trou cylindrique ayant un diamètre égal au diamètre du câble, et un axe de symétrie de révolution confondu avec l'axe de la pointe;
  • un écrou lame, inséré dans une fente du support, cette fente ayant un plan orthogonal à l'axe de la pointe, et ayant une ouverture hélicoïdale dont le diamètre est légèrement inférieur au diamètre du câble, pour que la gaine du câble puisse être vissée dans cette ouverture, cette dernière étant disposée en face du trou cylindrique du support.
According to a particular embodiment, the means for guiding the cable comprise:
  • a plastic support, comprising a cylindrical hole having a diameter equal to the diameter of the cable, and an axis of symmetry of revolution coincident with the axis of the tip;
  • a blade nut, inserted into a slot in the support, this slot having a plane orthogonal to the axis of the tip, and having a helical opening whose diameter is slightly less than the diameter of the cable, so that the cable sheath can be screwed in this opening, the latter being arranged opposite the cylindrical hole of the support.

Le dispositif est facile à monter, puisque le montage du câble consiste à : insérer l'écrou lame dans une fente du support, puis visser le câble à travers l'écrou lame et à travers le trou cylindrique du support pour enfoncer la pointe dans le toron du conducteur central.The device is easy to assemble, since the cable assembly consists of: inserting the blade nut into a slot in the support, then screwing the cable through the blade nut and through the cylindrical hole of the support to push the point into the central conductor strand.

Selon un mode de réalisation particulier, le capot de blindage est constitué d'une seule tôle soudable, découpée pour comporter une plaque centrale et quatre plaques périphériques; et pliée pour rabattre les quatre plaques périphériques orthogonalement à la plaque centrale, d'un même côté par rapport à celle-ci.According to a particular embodiment, the shielding cover consists of a single weldable sheet, cut to include a central plate and four peripheral plates; and folded to fold the four peripheral plates orthogonally to the central plate, on the same side with respect to the latter.

Le dispositif est particulièrement facile et peu coûteux à réaliser.The device is particularly easy and inexpensive to make.

L'invention sera mieux comprise et d'autres détails apparaîtront à l'aide de la description ci-dessous et des figures l'accompagnant :

  • la figure 1 représente une vue d'ensemble d'un exemple de réalisation du dispositif selon l'invention, avec le câble coaxial et le circuit imprimé à raccorder, le capot étant démonté;
  • la figure 2 représente une vue en coupe de cet exemple de réalisation;
  • les figures 3, 4, 5 représentent séparément : le capot de blindage, l'écrou lame, et le support, de cet exemple de réalisation.
The invention will be better understood and other details will appear with the aid of the description below and the accompanying figures:
  • Figure 1 shows an overview of an embodiment of the device according to the invention, with the coaxial cable and the printed circuit to be connected, the cover being removed;
  • Figure 2 shows a sectional view of this exemplary embodiment;
  • Figures 3, 4, 5 show separately: the shielding cover, the blade nut, and the support, of this exemplary embodiment.

L'exemple de réalisation représenté sur la figure 1 raccorde un câble coaxial 4 à un plaque de circuit imprimé 5. Les parties cachées ne sont pas représentées, pour plus de clarté. Cet exemple de réalisation comporte : un capot de blindage 1, constitué d'une tôle de maillechort de 0,3 mm d'épaisseur, découpée et pliée; un écrou lame 2, constitué d'une lame de maillechort; et un support 3, moulé en polyamide.The embodiment shown in Figure 1 connects a coaxial cable 4 to a printed circuit board 5. The hidden parts are not shown, for clarity. This exemplary embodiment comprises: a shielding cover 1, made of a sheet of nickel silver 0.3 mm thick, cut and folded; a blade nut 2, consisting of a nickel silver blade; and a support 3, molded in polyamide.

L'écrou lame 2 est inséré dans une fente 29 du support 3. Le capot 1 est représenté démonté, pour laisser apparaître le support 3. Quand le capot 1 est monté, il entoure le support 3 pour constituer un blindage électrique.The blade nut 2 is inserted into a slot 29 in the support 3. The cover 1 is shown disassembled, to reveal the support 3. When the cover 1 is mounted, it surrounds the support 3 to form an electrical shielding.

Pour faciliter le montage du capot 1, il est guidé par quatre faces du support 3 qui sont orthogonales à la plaque 5, telles que les faces 31 et 33. Pour cela, les dimensions du support 3 sont légèrement inférieures aux dimensions de l'intérieur du capot 1. Une des faces du capot 1 comporte une découpe, 6-8, qui constitue un contact à déplacement d'isolant. Quand le capot 1 est monté, cette découpe est sertie sur le câble 4. Le capot 1 comporte quatre picots de soudage, tel que le picot 7. Lorsque le capot 1 est monté, les quatre picots de soudage sont insérés dans des trous de la plaque de circuit imprimé 5, tels que les trous 30 et 32. Les picots 7 sont soudés sur des pastilles de circuit imprimé, situées sur la face opposée à celle supportant le support 3.To facilitate mounting of the cover 1, it is guided by four faces of the support 3 which are orthogonal to the plate 5, such as the faces 31 and 33. For this, the dimensions of the support 3 are slightly smaller than the dimensions of the interior of the cover 1. One of the faces of the cover 1 has a cutout, 6-8, which constitutes an insulation displacement contact. When the cover 1 is mounted, this cutout is crimped onto the cable 4. The cover 1 has four welding pins, such as the pin 7. When the cover 1 is mounted, the four welding pins are inserted in the holes of the printed circuit board 5, such as holes 30 and 32. The pins 7 are soldered onto printed circuit pads, situated on the face opposite to that supporting the support 3.

La figure 2 représente une vue en coupe de cet exemple de réalisation, avec le capot monté, selon un plan de coupe II II. Sur cette figure, il apparaît que le câble 4 comporte : un conducteur central 11 constitué d'un toron de filaments de cuivre ; d'une couche isolante 12 recouvrant le toron; d'une tresse de blindage 13 recouvrant la couche 12; et d'une gaine isolante périphérique 14. Le câble 4 est disposé parallèlement à la plaque 5, à travers une ouverture hélicoïdale de l'écrou lame 2 et à travers un trou cylindrique 28 du support 3. Le câble 4 a été vissé dans l'écrou lame 2 pour enfoncer une pointe 27 dans le toron du conducteur central 11.FIG. 2 represents a sectional view of this exemplary embodiment, with the cover mounted, according to a section plane II II. In this figure, it appears that the cable 4 comprises: a central conductor 11 consisting of a strand of copper filaments; an insulating layer 12 covering the strand; a shielding braid 13 covering the layer 12; and a peripheral insulating sheath 14. The cable 4 is disposed parallel to the plate 5, through a helical opening of the blade nut 2 and through a cylindrical hole 28 in the support 3. The cable 4 has been screwed into the blade nut 2 to drive a point 27 into the strand of the central conductor 11.

Quand le câble 4 a été vissé jusqu'au fond du trou 28, il est complètement immobilisé par l'écrou lame 2, qui est retenu à la fois par les parois de la fente 29 et par le câble 4 lui-même. La pointe 27 est une extrémité d'une tige métallique 26 noyée en partie dans le support 3, la pointe 27 dépassant au fond du trou 28. L'autre extrémité de cette tige métallique 26 constitue un picot soudable 22 qui traverse un trou 21 de la plaque du circuit imprimé 5, et qui est soudé sur une pastille 20. Cette tige métallique 26 est coudée à angle droit, de telle sorte que l'axe de la pointe 27 est parallèle au plan de la plaque 5 alors que l'axe du picot soudable 22 est orthogonal à cette plaque.When the cable 4 has been screwed to the bottom of the hole 28, it is completely immobilized by the blade nut 2, which is retained both by the walls of the slot 29 and by the cable 4 itself. The tip 27 is one end of a metal rod 26 partially embedded in the support 3, the point 27 protruding from the bottom of the hole 28. The other end of this metal rod 26 constitutes a weldable pin 22 which passes through a hole 21 of the plate of the printed circuit 5, and which is welded to a patch 20. This metal rod 26 is bent at right angles, so that the axis of the tip 27 is parallel to the plane of the plate 5 while the axis weldable pin 22 is orthogonal to this plate.

Sur cette figure, il apparaît que le support 3 comporte un pion de positionnement, cylindrique, 19, emboîté dans un trou 18 de la plaque 5. Le pion 19 permet de positionner le support 3 sur la plaque 5, pendant les opérations de montage. La figure 2 montre aussi deux des picots de soudage, 7 et 23, du capot 1. Ils traversent des trous 16 et 25 de la plaque 5, et sont soudés sur des pastilles 17 et 24 raccordées à la masse du circuit imprimé, par des liaisons non représentées.In this figure, it appears that the support 3 comprises a positioning pin, cylindrical, 19, fitted into a hole 18 in the plate 5. The pin 19 makes it possible to position the support 3 on the plate 5, during mounting operations. FIG. 2 also shows two of the welding pins, 7 and 23, of the cover 1. They pass through holes 16 and 25 of the plate 5, and are welded on pads 17 and 24 connected to the ground of the printed circuit, by connections not shown.

La figure 3 représente isolément le capot 1. Il est réalisé en une seule tôle de maillechort, découpée pour comporter une plaque centrale 37, et quatre plaques périphériques, telles que les plaques 38 et 39. Les quatre plaques périphériques sont repliées orthogonalement par rapport à la plaque 37, d'un même côté par rapport à cette dernière, de telle sorte que la plaque 37 constitue le dessus du capot alors que les plaques périphériques constituent quatre côtés du capot. La plaque périphérique 38 comporte la découpe en forme de fourche, 6-8, constituant le contact à déplacement d'isolant. Cette découpe comporte une embouchure 6 ayant une largeur supérieure du câble 4, puis décroissant jusqu'à une gorge 8 ayant une largeur constante inférieure au diamètre du câble 4, et égale au diamètre de la tresse 13, de telle sorte que, lorsque le capot 1 est serti sur le câble 4, le chant de la découpe 6-8 traverse la gaine 14 et pince la tresse de blindage 13. La plaque 30, de même que la plaque symétrique par rapport à la plaque centrale 31, est prolongée par deux pattes constituant des picots de soudage, tel que le picot 7.FIG. 3 represents the cover 1 in isolation. It is made of a single sheet of nickel silver, cut to include a central plate 37, and four peripheral plates, such as the plates 38 and 39. The four peripheral plates are folded orthogonally with respect to the plate 37, on the same side with respect to the latter, so that the plate 37 constitutes the top of the cover while the peripheral plates constitute four sides of the cover. The peripheral plate 38 includes the fork-shaped cutout, 6-8, constituting the insulation displacement contact. This cutout includes a mouth 6 having a greater width of the cable 4, then decreasing to a groove 8 having a constant width less than the diameter of the cable 4, and equal to the diameter of the braid 13, so that when the cover 1 is crimped on the cable 4, the edge of the cutout 6-8 crosses the sheath 14 and clamps the braid shielding 13. The plate 30, as well as the symmetrical plate with respect to the central plate 31, is extended by two tabs constituting welding pins, such as the pin 7.

La figure 4 représente isolément l'écrou lame 2. Il est constitué par un morceau de tôle de maillechort, percée d'une ouverture hélicoïdale 40 ayant un diamètre légèrement inférieur au diamètre du câble 4, et comportant une coupure 41 perpendiculaire au bord de l'ouverture 40. Les deux bords de la coupure 41 sont légèrement écartés pour donner une forme hélicoïdale à l'ouverture 40. Le câble 4 est vissé dans l'ouverture 40, après que l'écrou lame 2 ait été placé dans la fente 29 du support 3. Le chant de l'ouverture 40 mord et déforme légèrement la gaine 14, car celle-ci a une certaine élasticité.FIG. 4 represents the blade nut 2 in isolation. It is constituted by a piece of nickel silver sheet, pierced with a helical opening 40 having a diameter slightly less than the diameter of the cable 4, and comprising a cut 41 perpendicular to the edge of the opening 40. The two edges of the cut 41 are slightly apart to give a helical shape to the opening 40. The cable 4 is screwed into the opening 40, after the blade nut 2 has been placed in the slot 29 of the support 3. The edge of the opening 40 bites and slightly deforms the sheath 14, because the latter has a certain elasticity.

La figure 5 représente isolément le support 3. Il est constitué d'un bloc de polyamide moulé, ayant une forme générale parallèlèpidique, comportant une fente 29 dont le plan est perpendiculaire à l'axe du trou 28, et comportant une découpe 42 en forme de U. La découpe 42 constitue un chambrage ayant une forme générale plane et parallèle au plan de la fente 29. Il est destiné à faciliter le moulage du support 3, plus particulièrement pour mouler la fente 29.FIG. 5 represents the support 3 in isolation. It consists of a block of molded polyamide, having a generally parallelepidic shape, comprising a slot 29 whose plane is perpendicular to the axis of the hole 28, and comprising a cutout 42 in the form of U. The cutout 42 constitutes a recess having a generally planar shape and parallel to the plane of the slot 29. It is intended to facilitate the molding of the support 3, more particularly for molding the slot 29.

La portée de l'invention n'est pas limitée à l'exemple de réalisation décrit ci-dessus. De nombreuses variantes de réalisation sont à la portée de l'homme de l'art. Par exemple, il est possible de réaliser le support en polytétrafluoréthylène, au lieu de polyamide, le choix du matériau étant fonction de l'impédance caractéristique du câble, et en fonction des pertes diélectriques tolérables. Les dimensions sont choisies, elles aussi, en fonction de l'impédance caractéristique du câble à raccorder.The scope of the invention is not limited to the embodiment described above. Many variant embodiments are within the reach of those skilled in the art. For example, it is possible to produce the support in polytetrafluoroethylene, instead of polyamide, the choice of material being a function of the characteristic impedance of the cable, and a function of the tolerable dielectric losses. The dimensions are also chosen according to the characteristic impedance of the cable to be connected.

Claims (3)

  1. Device for connecting a coaxial cable to a printed circuit (5) without preparation of the cable (4) which has a stranded central conductor (11), a layer of insulation (12), a screening braid (13) and an outer insulative sheath (14); said device comprising:
    - a conductor (26) one end of which includes a spike (27) and the other end (22) of which is adapted to be soldered to the printed circuit (5, 20);
    - means (2, 3) for guiding the cable (4) in a helical path whose direction of translation is on the axis of the cable and on the axis of the spike (27) in order to force the spike (27) into the stranded central conductor (11);
    - a screening cover (1) surrounding the guide means (2, 3) and including a forked cut-out (6, 8) constituting an insulation displacement contact to be crimped to the cable (4) to pierce its sheath (14) and grip the braid (13); the cover (1) being connectable to the earth of the printed circuit (5) by solder tags (7, 23).
  2. Device according to claim 1 characterised in that the guide means for the cable (4) include:
    - a plastics material support (3) including: a cylindrical hole (28) having a diameter equal to the diameter of the cable (2) and an axis of symmetry of revolution coincident with the axis of the spike (27);
    - a plate nut (2) inserted in a slot (29) of the support (3), the slot having a plane orthogonal to the axis of the spike and a helical opening (40) the diameter of which is slightly less than the diameter of the cable (4), so that the sheath (14) of the cable can be screwed into this opening; the latter being disposed facing the cylindrical hole (28) of the support.
  3. Device according to claim 1 or claim 2 characterised in that the screening cover (1) comprises a single plate of a material which can be soldered cut to include a central panel (37) and four peripheral panels (38, 39); and folded to fold the four peripheral panels at right-angles to the central panel (37), towards the same side of the latter.
EP91102720A 1990-02-26 1991-02-25 Device for connecting a coaxial cable to a printed circuit board without preparation of the cable Expired - Lifetime EP0444567B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9002358A FR2658957B1 (en) 1990-02-26 1990-02-26 DEVICE FOR CONNECTING A COAXIAL CABLE TO A PRINTED CIRCUIT, WITHOUT PREPARING THE CABLE.
FR9002358 1990-02-26

Publications (2)

Publication Number Publication Date
EP0444567A1 EP0444567A1 (en) 1991-09-04
EP0444567B1 true EP0444567B1 (en) 1995-02-01

Family

ID=9394132

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91102720A Expired - Lifetime EP0444567B1 (en) 1990-02-26 1991-02-25 Device for connecting a coaxial cable to a printed circuit board without preparation of the cable

Country Status (9)

Country Link
EP (1) EP0444567B1 (en)
AT (1) ATE118120T1 (en)
DE (1) DE69107099T2 (en)
DK (1) DK0444567T3 (en)
ES (1) ES2070354T3 (en)
FI (1) FI910868A (en)
FR (1) FR2658957B1 (en)
GR (1) GR3015827T3 (en)
NO (1) NO180766C (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2308511B (en) * 1995-12-21 2000-03-29 Fringe Electronics Ltd Screening can
DE29803050U1 (en) 1998-02-21 1998-05-20 Beppler, Wolfgang, 88662 Überlingen Plunge cut clamp connectors for coaxial cables
US6923741B2 (en) † 2002-08-30 2005-08-02 Shimano Inc. Top sprocket for a rear sprocket assembly and rear sprocket assembly for a bicycle
FR2850797A1 (en) * 2003-02-05 2004-08-06 Radiall Sa Coaxial cable and printed circuit board connector for wireless transmission system, has cover fixed on printed circuit board and arranged to recover side clearance, on each side of base, formed by locking blade
DE102004032006B3 (en) * 2004-07-01 2006-04-20 Kathrein-Werke Kg Contact element for electrically contacting a coaxial cable to a circuit board, comprises electrically conducting inner and outer contact elements and a dielectric
US20070054510A1 (en) * 2005-09-02 2007-03-08 Russell Price System and method for shielded coaxial cable attachment
FR3064825B1 (en) * 2017-03-28 2021-07-30 Thales Sa HYPERFREQUENCY CONNECTOR CONNECTION DEVICE USING SUCH A CONNECTOR, AND PRINTED ANTENNA EQUIPPED WITH SUCH A DEVICE
DE102021123830A1 (en) 2021-09-15 2023-03-16 Md Elektronik Gmbh Soldering aid, assembly and method for fixing a stranded wire on a contact area of a printed circuit board

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4533193A (en) * 1983-11-21 1985-08-06 Burndy Corporation IDC termination for coaxial cable having alignment & stabilizing means
US4708414A (en) * 1987-01-30 1987-11-24 Albert Lam Electric wire connector for coaxial cable
US4842554A (en) * 1988-06-03 1989-06-27 Amp Incorporated One-piece shield for a circular din

Also Published As

Publication number Publication date
FR2658957A1 (en) 1991-08-30
DE69107099T2 (en) 1995-05-24
GR3015827T3 (en) 1995-07-31
NO180766C (en) 1997-06-11
EP0444567A1 (en) 1991-09-04
ATE118120T1 (en) 1995-02-15
ES2070354T3 (en) 1995-06-01
NO180766B (en) 1997-03-03
NO910727D0 (en) 1991-02-25
FI910868A (en) 1991-08-27
FR2658957B1 (en) 1992-05-07
FI910868A0 (en) 1991-02-22
NO910727L (en) 1991-08-27
DK0444567T3 (en) 1995-05-08
DE69107099D1 (en) 1995-03-16

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