EP1653574B1 - Method of mounting an electrical connector on a coaxial cable and such a connector - Google Patents

Method of mounting an electrical connector on a coaxial cable and such a connector Download PDF

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Publication number
EP1653574B1
EP1653574B1 EP05300854A EP05300854A EP1653574B1 EP 1653574 B1 EP1653574 B1 EP 1653574B1 EP 05300854 A EP05300854 A EP 05300854A EP 05300854 A EP05300854 A EP 05300854A EP 1653574 B1 EP1653574 B1 EP 1653574B1
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EP
European Patent Office
Prior art keywords
bearing
crimping
insulating
central contact
tool
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EP05300854A
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German (de)
French (fr)
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EP1653574A1 (en
Inventor
Sébastien Annequin
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Radiall SA
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Radiall SA
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Priority to FR0452461A priority Critical patent/FR2877150B1/en
Application filed by Radiall SA filed Critical Radiall SA
Publication of EP1653574A1 publication Critical patent/EP1653574A1/en
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Publication of EP1653574B1 publication Critical patent/EP1653574B1/en
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00Structural 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
    • H01R9/03Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/048Crimping apparatus or processes
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/183Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
    • H01R4/184Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
    • H01R4/185Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion combined with a U-shaped insulation-receiving portion
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00Structural 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
    • H01R9/03Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • H01R9/0518Connection to outer conductor by crimping or by crimping ferrule

Description

  • La présente invention a pour objet un procédé de montage d'un connecteur électrique sur un câble coaxial, un tel connecteur électrique, et un outil pour la mise en oeuvre du procédé.The present invention relates to a method of mounting an electrical connector on a coaxial cable, such an electrical connector, and a tool for carrying out the method.
  • On connaît par le brevet européen EP-B1-432 666 un connecteur électrique pour un câble coaxial, comportant un manchon extérieur, un corps isolant inséré dans ce manchon et un contact central maintenu par l'intermédiaire du corps isolant. Le contact central comporte deux paires de pattes de sertissage permettant le sertissage du conducteur central du câble coaxial. Le manchon extérieur comporte, de part et d'autre de ces pattes de sertissage, des ouvertures permettant d'amener au-dessus et en dessous du contact central des outils permettant de réaliser le sertissage. Du fait de la présence d'une ouverture dans le manchon extérieur, en dessous du contact central, la performance en radiofréquence du connecteur peut être affectée.We know by the European patent EP-B1-432 666 an electrical connector for a coaxial cable, comprising an outer sleeve, an insulating body inserted in this sleeve and a central contact held through the insulating body. The central contact has two pairs of crimping tabs for crimping the central conductor of the coaxial cable. The outer sleeve comprises, on either side of these crimping tabs, openings for bringing above and below the central contact tools for crimping. Due to the presence of an opening in the outer sleeve, below the central contact, the radio frequency performance of the connector can be affected.
  • On connaît également par la demande de brevet GB-A-2 020 919 , considéré comme étant l'état de la technique le plus proche, un connecteur électrique pour un câble coaxial, comportant un élément conducteur périphérique dans lequel est inséré un manchon isolant solidaire d'un élément central conducteur. Ce dernier comporte des portions de sertissage en appui sur le manchon isolant qui peut servir de support lors du sertissage.It is also known from the application for GB-A-2,020,919 , considered to be the closest state of the art, an electrical connector for a coaxial cable, comprising a peripheral conductive element in which is inserted an insulating sleeve integral with a central conductive element. The latter comprises crimping portions bearing on the insulating sleeve which can serve as a support during crimping.
  • L'invention vise notamment à améliorer le procédé de montage d'un connecteur électrique sur un câble coaxial.The invention aims in particular to improve the method of mounting an electrical connector on a coaxial cable.
  • L'invention a ainsi pour objet un procédé de montage d'un connecteur électrique sur un câble coaxial, selon la revendication 1.The invention thus relates to a method of mounting an electrical connector on a coaxial cable according to claim 1.
  • Grâce à l'invention, l'appui de la portion de sertissage du contact central contre la surface d'appui de l'outil peut avoir lieu sur une course relativement importante de l'outil lors du sertissage, du fait que cette surface d'appui de l'outil peut descendre relativement bas par rapport au corps isolant du connecteur.Thanks to the invention, the support of the crimping portion of the central contact against the bearing surface of the tool can take place on a relatively large stroke of the tool during crimping, because this surface of Tool support can go down relatively low compared to the insulator body of the connector.
  • Ceci permet notamment de rabattre de manière fiable des branches déformables de la portion de sertissage du contact central et d'éviter notamment un flambage de ces branches vers l'extérieur, lors du sertissage.This allows in particular to reliably fold deformable branches of the crimping portion of the central contact and in particular to avoid buckling of these branches outwardly, during crimping.
  • Dans un exemple de mise en oeuvre de l'invention, la portion de sertissage du contact central comporte une section transversale sensiblement en U ou en V, les deux branches du U ou du V étant notamment rabattues l'une en direction de l'autre lors du sertissage. Le dégagement précité peut notamment s'étendre au moins partiellement sous un plan tangent à la base du U ou du V.In an exemplary implementation of the invention, the crimping portion of the central contact has a cross section substantially U or V, the two branches of the U or V being in particular folded towards one another during crimping. The aforementioned clearance may in particular extend at least partially under a plane tangent to the base of the U or V.
  • Avantageusement, l'outil à sertir comporte une ouverture dans laquelle s'engage, lors du sertissage, la portion de sertissage du contact central, et la surface d'appui de l'outil, au moins au voisinage de ladite ouverture, présente en section transversale une forme évasée vers l'ouverture.Advantageously, the crimping tool comprises an opening in which engages, during crimping, the crimping portion of the central contact, and the bearing surface of the tool, at least in the vicinity of said opening, has in section transversal flared shape towards the opening.
  • Cette forme de la surface d'appui de l'outil peut permettre de rabattre progressivement la portion de sertissage du contact central.This form of the bearing surface of the tool can be used to gradually fold down the crimping portion of the central contact.
  • La surface d'appui de l'outil comporte par exemple deux parois en regard défmissant la forme évasée, ces deux parois pouvant être planes ou non, étant par exemple courbes.The bearing surface of the tool comprises for example two facing walls defining the flared shape, these two walls being able to be flat or not, being for example curved.
  • La surface d'appui peut être formée dans une cavité de l'outil à sertir, la cavité ayant par exemple un fond présentant en section transversale une forme sensiblement en m.The bearing surface may be formed in a cavity of the crimping tool, the cavity having for example a bottom having in cross section a shape substantially in m.
  • De préférence, la profondeur de la cavité de l'outil est choisie suffisamment grande de manière à ce qu'en fin de course de l'outil, lors du sertissage, la portion d'appui du corps isolant s'engage au moins partiellement dans cette cavité.Preferably, the depth of the cavity of the tool is chosen to be sufficiently large so that at the end of the stroke of the tool, during crimping, the bearing portion of the insulating body engages at least partially in this cavity.
  • Comme on peut le remarquer, l'invention permet d'éviter la présence d'une ouverture dans le connecteur pour le passage d'un outil à sertir, située sous le contact central, ce qui assure notamment une performance satisfaisante de l'assemblage du connecteur sur le câble coaxial, dans le domaine des radiofréquences.As can be seen, the invention avoids the presence of an opening in the connector for the passage of a crimping tool, located under the central contact, which ensures in particular a satisfactory performance of the assembly of the connector on the coaxial cable, in the field of radio frequencies.
  • Par ailleurs, la surface d'appui de l'outil peut présenter une forme épousant sensiblement, en fin de course de l'outil, lors du sertissage, la forme de la ou des parois latérales de la portion d'appui du corps isolant, de manière à ce que, le cas échéant, la surface d'appui de l'outil puisse s'opposer à un gonflement éventuel de la portion d'appui du corps isolant sous l'effet de l'effort exercé par l'outil à sertir sur le corps isolant. L'outil peut donc reprendre éventuellement une partie des efforts subis par la portion d'appui du corps isolant. L'invention permet ainsi, si on le souhaite, d'exercer avec l'outil à sertir un effort relativement élevé sur la portion de sertissage, sans endommager la portion d'appui du corps isolant située en dessous.Moreover, the support surface of the tool may have a shape substantially conforming, at the end of the stroke of the tool, during crimping, the shape of the side wall or walls of the bearing portion of the insulating body, so that, if appropriate, the bearing surface of the tool can oppose any swelling of the bearing portion of the insulating body under the effect of the force exerted by the tool to crimp on the insulating body. The tool can therefore possibly resume some of the forces experienced by the bearing portion of the insulating body. The invention thus allows, if desired, to exert with the crimping tool a relatively high stress on the crimping portion, without damaging the bearing portion of the insulating body below.
  • Dans un exemple de mise en oeuvre de l'invention, la portion d'appui du corps isolant s'étend sensiblement en totalité sous la portion de sertissage du contact central.In an exemplary implementation of the invention, the bearing portion of the insulating body extends substantially entirely under the crimping portion of the central contact.
  • La portion d'appui du corps isolant peut comporter une section transversale ayant une forme évasée vers le bas, c'est-à-dire notamment dans une direction opposée à la surface supérieure de la portion d'appui.The bearing portion of the insulating body may comprise a cross section having a shape flared downwards, that is to say in particular in a direction opposite to the upper surface of the bearing portion.
  • La portion d'appui peut comporter par exemple au moins une paroi latérale plane.The bearing portion may comprise for example at least one flat side wall.
  • En variante, la portion d'appui peut comporter au moins une paroi latérale non plane, par exemple une paroi courbe.Alternatively, the bearing portion may comprise at least one non-flat side wall, for example a curved wall.
  • Dans un exemple de mise en oeuvre de l'invention, la portion d'appui du corps isolant comporte au moins une paroi latérale avec une première portion plane sensiblement adjacente à la face supérieure de la portion d'appui et une deuxième portion plane en dessous de la première et non parallèle à celle-ci.In an exemplary implementation of the invention, the bearing portion of the insulating body comprises at least one side wall with a first flat portion substantially adjacent to the upper face of the bearing portion and a second flat portion below. of the first and not parallel to it.
  • La portion d'appui peut comporter, si on le souhaite, deux parois latérales parallèles en regard, notamment planes.The bearing portion may comprise, if desired, two parallel walls facing each other, including planar.
  • Dans un exemple de mise en oeuvre de l'invention, la portion d'appui du corps isolant comporte sur sa face supérieure un renfoncement agencé pour recevoir au moins partiellement la portion de sertissage du contact central, ce renfoncement s'étendant notamment sensiblement parallèlement à des parois latérales de la portion d'appui du corps isolant.In an exemplary implementation of the invention, the bearing portion of the insulating body comprises on its upper face a recess arranged to receive at least partially the crimping portion of the central contact, this recess extending in particular substantially parallel to side walls of the bearing portion of the insulating body.
  • Le corps isolant peut comporter une portion, notamment sensiblement cylindrique, sur laquelle se raccorde la portion d'appui et un évidement agencé pour recevoir au moins partiellement le contact central.The insulating body may comprise a portion, in particular substantially cylindrical, on which the support portion is connected and a recess arranged to receive at least partially the central contact.
  • Dans un exemple de mise en oeuvre de l'invention, le corps isolant est réalisé en un polymère, notamment un polymère haute performance.In an exemplary implementation of the invention, the insulating body is made of a polymer, in particular a high performance polymer.
  • Le connecteur électrique peut comporter un corps conducteur extérieur pourvu d'une paroi entourant au moins partiellement le contact central et la portion d'appui du corps isolant, cette portion d'appui reposant sur cette paroi du corps extérieur.The electrical connector may comprise an outer conductive body provided with a wall at least partially surrounding the central contact and the bearing portion of the insulating body, this bearing portion resting on this wall of the outer body.
  • Dans un exemple de mise en oeuvre de l'invention, la profondeur de la cavité de l'outil à sertir est sensiblement comprise entre la moitié et deux tiers du rayon interne du corps extérieur au niveau de la portion de sertissage du contact central.In an exemplary implementation of the invention, the depth of the cavity of the crimping tool is substantially between half and two thirds of the inner radius of the outer body at the crimping portion of the central contact.
  • Avantageusement, le corps conducteur extérieur comporte au moins une portion de sertissage pour le sertissage de l'un au moins de la tresse de blindage et de la gaine isolante externe du câble coaxial.Advantageously, the outer conductive body comprises at least one crimping portion for crimping at least one of the shielding braid and the outer insulating sheath of the coaxial cable.
  • Dans un exemple de mise en oeuvre de l'invention, le corps isolant du connecteur est disposé en retrait d'une portion de sertissage du connecteur servant au sertissage de la tresse de blindage du câble coaxial. Le contact central du connecteur peut être pourvu ou non d'une portion de sertissage supplémentaire pour la gaine isolante interne du câble coaxial.In an exemplary implementation of the invention, the insulating body of the connector is set back from a crimping portion of the connector used for crimping the shielding braid of the coaxial cable. The central contact of the connector may or may not have an additional crimping portion for the inner insulating sheath of the coaxial cable.
  • L'invention a encore pour objet un connecteur électrique destiné à être monté sur un câble coaxial, le connecteur comportant :
    • un contact central s'étendant suivant un axe longitudinal et pourvu d'au moins une portion de sertissage pouvant être sertie avec un conducteur central du câble coaxial,
    • un corps isolant comportant une portion d'appui ayant une face supérieure sur laquelle s'applique au moins partiellement la portion de sertissage du contact central, cette portion d'appui comportant au moins une paroi latérale s'étendant sensiblement suivant ledit axe longitudinal,
    • au moins un dégagement adjacent à la paroi latérale de la portion d'appui du corps isolant, ce dégagement s'étendant au moins partiellement sous la portion de sertissage du contact central.
    The invention also relates to an electrical connector intended to be mounted on a coaxial cable, the connector comprising:
    • a central contact extending along a longitudinal axis and provided with at least one crimpable portion crimped with a central conductor of the coaxial cable,
    • an insulating body comprising a bearing portion having an upper face on which at least partially the crimping portion of the central contact is applied, this bearing portion comprising at least one lateral wall extending substantially along said longitudinal axis,
    • at least one clearance adjacent to the side wall of the bearing portion of the insulating body, this clearance extending at least partially under the crimping portion of the central contact.
  • Dans un exemple de mise en oeuvre de l'invention, la portion de sertissage du contact central comporte une section transversale sensiblement en U ou en V, avec par exemple les branches du U ou du V s'évasant vers le haut.In an exemplary implementation of the invention, the crimping portion of the central contact has a cross section substantially U or V, with for example the branches of U or V flaring upwards.
  • La portion d'appui du corps isolant peut s'étendre sensiblement en totalité sous la portion de sertissage du contact central et comporter, le cas échéant, sur sa face supérieure, un renfoncement s'étendant suivant l'axe longitudinal et agencé pour recevoir au moins partiellement la portion de sertissage du contact central.The bearing portion of the insulating body may extend substantially completely under the crimping portion of the central contact and may include, if appropriate, on its upper face, a recess extending along the longitudinal axis and arranged to receive at the less partially the crimping portion of the central contact.
  • L'invention pourra être mieux comprise à la lecture de la description détaillée qui va suivre, d'exemples de mise en oeuvre non limitatifs de l'invention, et à l'examen du dessin annexé, sur lequel :
    • la figure 1 représente, schématiquement et partiellement, en perspective, un connecteur électrique conforme à l'invention,
    • la figure 2 représente, schématiquement et partiellement, en perspective, une extrémité d'un câble coaxial destiné à être monté sur le connecteur de la figure 1,
    • la figure 3 illustre de manière schématique et partielle, en perspective, le corps isolant du connecteur de la figure 1,
    • les figures 4 et 5 représentent, schématiquement et partiellement, en perspective, un corps isolant d'un connecteur conforme à d'autres exemples de mise en oeuvre de l'invention,
    • les figures 6 à 8 illustrent schématiquement trois étapes successives du sertissage d'un câble coaxial sur le connecteur de la figure 1, et
    • les figures 9 et 10 représentent schématiquement deux étapes successives du sertissage d'un câble coaxial sur un connecteur électrique conforme à un autre exemple de mise en oeuvre de l'invention.
    The invention can be better understood on reading the following detailed description, non-limiting examples of implementation of the invention, and on examining the appended drawing, in which:
    • the figure 1 represents, schematically and partially, in perspective, an electrical connector according to the invention,
    • the figure 2 represents, schematically and partially, in perspective, an end of a coaxial cable intended to be mounted on the connector of the figure 1 ,
    • the figure 3 illustrates schematically and partially, in perspective, the insulating body of the connector of the figure 1 ,
    • the Figures 4 and 5 represent, schematically and partially, in perspective, an insulating body of a connector according to other examples of implementation of the invention,
    • the Figures 6 to 8 schematically illustrate three successive steps of crimping a coaxial cable on the connector of the figure 1 , and
    • the Figures 9 and 10 schematically represent two successive steps of crimping a coaxial cable on an electrical connector according to another embodiment of the invention.
  • On a représenté sur la figure 1 un connecteur électrique 1 conforme à l'invention, comportant un corps conducteur extérieur 2, un corps isolant 3 fixé sur le corps extérieur 2 et un contact central 4 maintenu par le corps isolant 3.We have shown on the figure 1 an electrical connector 1 according to the invention, comprising an outer conductive body 2, an insulating body 3 fixed to the outer body 2 and a central contact 4 held by the insulating body 3.
  • Le corps extérieur 2 comporte une portion cylindrique 5 d'axe longitudinal X dans laquelle est fixée une portion cylindrique 6 du corps isolant 3, et un relief d'orientation 8 formé, par exemple, par des pattes en saillie sur la portion cylindrique 5, ce relief d'orientation 8 coopérant avec un logement d'un connecteur électrique complémentaire, non représenté.The outer body 2 comprises a cylindrical portion 5 of longitudinal axis X in which is fixed a cylindrical portion 6 of the insulating body 3, and an orientation relief 8 formed, for example, by tabs projecting on the cylindrical portion 5, this orientation relief 8 cooperating with a housing of a complementary electrical connector, not shown.
  • Le corps extérieur 2 comporte en outre deux portions de sertissage 10 et 11 ayant chacune une section transversale, perpendiculaire à l'axe X, sensiblement en U.The outer body 2 further comprises two crimping portions 10 and 11 each having a cross section, perpendicular to the X axis, substantially U.
  • La portion de sertissage 10, respectivement 11, comporte une paire de branches rabattables 10a et 10b, respectivement 11a et 11b, permettant le sertissage de la tresse de blindage 15, respectivement de la gaine isolante externe 13, d'un câble coaxial 12.The crimping portion 10, respectively 11, comprises a pair of foldable branches 10a and 10b, respectively 11a and 11b, for crimping the shielding braid 15, or outer insulating sheath 13, respectively, with a coaxial cable 12.
  • Ces portions de sertissage 10 et 11 sont pourvues chacune d'une ouverture 18 située entre deux branches rabattables 10a et 10b, respectivement 11a et 11b, et permettant, lors du sertissage, à une portion de la tresse de blindage 15, respectivement de la gaine isolante externe 13, de déborder légèrement à travers cette ouverture 18, ce qui permet d'améliorer l'ancrage de la tresse de blindage 15, respectivement de la gaine isolante externe 13, au sein du connecteur.These crimping portions 10 and 11 are each provided with an opening 18 situated between two folding branches 10a and 10b, respectively 11a and 11b, and allowing, during crimping, to a portion of the shielding braid 15, respectively of the sheath outer insulation 13, to overflow slightly through this opening 18, which improves the anchoring of the shielding braid 15, respectively the outer insulating sheath 13, within the connector.
  • Les branches 10a, 10b, 11a et 11b comportent à leur extrémité une pluralité de dents 19 afm notamment de mieux enserrer la tresse de blindage 15 ou la gaine isolante externe 13.The branches 10a, 10b, 11a and 11b have at their end a plurality of teeth 19 afm including better grip the shielding braid 15 or the outer insulating sheath 13.
  • Le corps isolant 3 comporte une portion d'appui 20 s'étendant suivant l'axe X et se raccordant à la portion cylindrique 6, comme on peut le voir sur la figure 3 notamment.The insulating body 3 comprises a bearing portion 20 extending along the axis X and connected to the cylindrical portion 6, as can be seen in FIG. figure 3 especially.
  • La portion d'appui 20 comporte une face supérieure 22 pourvue d'un renfoncement 23 d'axe X, agencé pour recevoir au moins partiellement une portion de sertissage 25 de l'élément de contact 4, comme illustré sur la figure 1.The bearing portion 20 has an upper face 22 provided with a recess 23 of axis X, arranged to receive at least partially a crimping portion 25 of the contact element 4, as shown in FIG. figure 1 .
  • La portion d'appui 20 présente une paroi inférieure 32 reposant sur une paroi cylindrique du corps extérieur 2.The bearing portion 20 has a bottom wall 32 resting on a cylindrical wall of the outer body 2.
  • Dans l'exemple considéré, la portion d'appui 20 comporte deux parois en regard 27 divergeant vers le bas, chacune comportant une première portion plane 28 sensiblement adjacente à la face supérieure 22 et une deuxième portion plane 29 en dessous de la première 28 et non parallèle à celle-ci.In the example considered, the bearing portion 20 comprises two facing walls 27 diverging downwards, each having a first flat portion 28 substantially adjacent to the upper face 22 and a second flat portion 29 below the first 28 and not parallel to it.
  • En variante, comme illustré sur la figure 4, la portion d'appui 20 du corps isolant 3 peut comporter deux parois latérales 30 en regard entièrement planes et divergeant vers le bas.Alternatively, as illustrated on the figure 4 , the bearing portion 20 of the insulating body 3 may have two side walls 30 facing entirely flat and diverging downwards.
  • En variante encore, la portion d'appui 20 du corps isolant 3 peut comporter deux parois latérales 31 planes et parallèles.In another variant, the bearing portion 20 of the insulating body 3 may comprise two flat and parallel side walls 31.
  • Dans l'exemple considéré, le corps isolant est réalisé en un polymère haute performance. Bien entendu, l'invention n'est pas limitée à un corps isolant réalisé avec ce type de matériau.In the example considered, the insulating body is made of a high performance polymer. Of course, the invention is not limited to an insulating body made with this type of material.
  • La portion cylindrique 6 du corps isolant 3 comporte un évidement 33 permettant de recevoir une extrémité du contact central 4 lorsque la portion de sertissage 25 est disposée sur la face supérieure 22 de la portion d'appui 20.The cylindrical portion 6 of the insulating body 3 comprises a recess 33 for receiving an end of the central contact 4 when the crimping portion 25 is disposed on the upper face 22 of the bearing portion 20.
  • La portion de sertissage 25 comporte une section transversale en U, avec deux branches 35 en regard pouvant être rabattues l'une vers l'autre autour du conducteur central 16 du câble coaxial 12, lors du sertissage. Les branches 35 s'évasent vers le haut, avant le sertissage, comme illustré notamment sur la figure 6. En variante, les branches du U pourraient être initialement parallèles.The crimping portion 25 has a U-shaped cross section, with two branches 35 facing each other which can be folded towards each other around the central conductor 16 of the coaxial cable 12, during crimping. The branches 35 flare upward, before crimping, as illustrated in particular on the figure 6 . Alternatively, the branches of the U could be initially parallel.
  • Dans une variante non illustrée, la partie de sertissage 25 peut comporter plus de deux branches déformables, par exemple deux paires de branches en regard.In a variant not illustrated, the crimping portion 25 may comprise more than two deformable branches, for example two pairs of branches facing each other.
  • Le connecteur électrique 1 comporte deux dégagements 40 ménagés de part et d'autre de la portion d'appui 20 du corps isolant 3.The electrical connector 1 comprises two clearances 40 formed on either side of the bearing portion 20 of the insulating body 3.
  • Chaque dégagement 40 est adjacent à une paroi latérale 27 de la portion d'appui 20 et s'étend sous la portion de sertissage 25 du contact central 4 jusqu'au conducteur extérieur 2, comme on peut le voir notamment sur la figure 6.Each clearance 40 is adjacent to a side wall 27 of the bearing portion 20 and extends below the crimping portion 25 of the central contact 4 to the outer conductor 2, as can be seen in particular on the figure 6 .
  • On utilise, pour réaliser le sertissage de la portion de sertissage 25 sur le conducteur central 16 du câble coaxial 12, un outil à sertir 50 représenté schématiquement en section transversale sur les figures 6 à 8.To crimp the crimping portion 25 onto the central conductor 16 of the coaxial cable 12, a crimping tool 50 is shown schematically in cross-section on the Figures 6 to 8 .
  • Cet outil 50 comporte une cavité 51 définissant une surface d'appui 52 capable de s'appliquer sur la portion de sertissage 25 du contact central 4.This tool 50 comprises a cavity 51 defining a bearing surface 52 capable of being applied to the crimping portion 25 of the central contact 4.
  • Cette surface d'appui 52 présente, au moins au voisinage d'une ouverture 53 par laquelle s'engage la portion de sertissage 25 du contact central 4 lors du sertissage, une section transversale évasée vers le bas.This bearing surface 52 has, at least in the vicinity of an opening 53 which engages the crimping portion 25 of the central contact 4 during crimping, a cross section flared downwards.
  • La surface d'appui 52 peut par exemple comporter deux parois courbes 55 en regard se raccordant à un fond 54 de la cavité 51, lequel fond 54 présente en section transversale par exemple une forme en m.The bearing surface 52 may for example comprise two curved walls 55 opposite connecting to a bottom 54 of the cavity 51, which bottom 54 has in cross section for example a shape in m.
  • Dans l'exemple considéré, la forme de la surface d'appui 52 est choisie de manière à épouser sensiblement la forme d'une partie au moins des parois latérales 27 de la portion d'appui 20, en fin de course de l'outil 50, lors du sertissage, comme illustré sur la figure 8.In the example considered, the shape of the bearing surface 52 is chosen so as to conform substantially to the shape of at least a portion of the side walls 27 of the bearing portion 20, at the end of the stroke of the tool 50, during crimping, as illustrated on the figure 8 .
  • Lors du sertissage du contact central 4 sur le conducteur central 16 du câble coaxial 12, l'outil 50 est déplacé suivant un axe Y perpendiculaire à l'axe X, comme illustré sur les figures 6 à 8.When crimping the central contact 4 on the central conductor 16 of the coaxial cable 12, the tool 50 is moved along a Y axis perpendicular to the X axis, as shown in FIGS. Figures 6 to 8 .
  • La forme évasée vers le bas de la surface d'appui 52 de l'outil 50 et la profondeur relativement importante de la cavité 51 permettent de rabattre les branches 35 du U de la partie de sertissage 25 de manière progressive afin d'éviter un flambage éventuel de ces branches 35 vers l'extérieur.The downwardly flared shape of the bearing surface 52 of the tool 50 and the relatively large depth of the cavity 51 make it possible to fold down the branches 35. the U of the crimping portion 25 in a progressive manner to prevent any buckling of these branches 35 to the outside.
  • La surface d'appui 52 s'engage dans les dégagements 40, sous la portion de sertissage 25 après une certaine course de l'outil 50, comme illustré sur la figure 8.The bearing surface 52 engages in the recesses 40, under the crimping portion 25 after a certain stroke of the tool 50, as illustrated in FIG. figure 8 .
  • En fm de sertissage, comme illustré sur la figure 8, les branches 35 sont rabattues l'une vers l'autre, autour du conducteur central 16.In crimping fm, as shown on the figure 8 , the branches 35 are folded towards one another, around the central conductor 16.
  • Dans l'exemple considéré, en fin de course, l'outil 50 exerce sur l'ensemble constitué du contact central 4 et de la portion d'appui 20 un effort pouvant être de l'ordre de 1 300 N.In the example considered, at the end of the stroke, the tool 50 exerts on the assembly constituted by the central contact 4 and the bearing portion 20 a force that can be of the order of 1300 N.
  • Du fait que la surface d'appui 52 de l'outil 50 peut limiter le gonflement de la portion d'appui 20, celle-ci peut supporter des efforts relativement importants sans être endommagée.Because the bearing surface 52 of the tool 50 can limit the swelling of the bearing portion 20, it can withstand relatively large forces without being damaged.
  • La surface d'appui 52 de l'outil 50 peut être plus ou moins évasée vers le bas en fonction de la forme des parois latérales de la portion d'appui 20.The bearing surface 52 of the tool 50 may be more or less flared down depending on the shape of the side walls of the bearing portion 20.
  • Comme illustré sur les figures 9 et 10, lorsque la portion d'appui 20 comporte des parois latérales 31 planes et parallèles, la surface d'appui 52 de l'outil 50 peut être moins évasée vers le bas et comporter par exemple deux parois 55 en regard sensiblement planes.As illustrated on Figures 9 and 10 when the bearing portion 20 has flat and parallel side walls 31, the bearing surface 52 of the tool 50 may be less flared downwards and comprise, for example, two substantially planar facing walls 55.
  • Bien entendu, l'invention n'est pas limitée aux exemples de mise en oeuvre qui viennent d'être décrits.Of course, the invention is not limited to the implementation examples which have just been described.
  • Par exemple, si on le souhaite, la surface d'appui de l'outil à sertir peut ne pas épouser la forme des parois latérales de la portion d'appui du corps isolant, en fin de course, lors du sertissage.For example, if desired, the bearing surface of the crimping tool may not match the shape of the side walls of the bearing portion of the insulating body, at the end of the stroke, during crimping.

Claims (19)

  1. A method of mounting an electrical connector (1) on a coaxial cable (12), the method comprising the following steps:
    · providing an electrical connector (1) comprising:
    a central contact (4) extending along a longitudinal axis (X) and provided with at least one crimping portion (25) suitable for being crimped on a central conductor (16) of the coaxial cable,
    an insulating body (3) comprising a bearing portion (20) having a top face (22) against which at least part of the crimping portion (25) of the central contact bears, said bearing portion having at least one side wall (27; 30; 31) extending substantially along said longitudinal axis (X), and
    crimping the central contact (4) of the connector onto the central conductor (16) of the cable using a crimping tool (50) having a bearing surface (52) for bearing against the crimping portion (25) of the central contact, characterized in that the electrical connector (1) further comprises:
    at least one empty space (40) adjacent to the side wall (27; 30; 31) of the bearing portion of the insulating body, said empty space extending at least in part beneath the crimping portion (25) of the central contact, and that the tool is moved during crimping to an end-of-stroke position in which the bearing surface (52) of the tool extends at least in part into said empty space (40) and beneath the crimping portion (25) of the central contact.
  2. A method according to claim 1, characterized in that the crimping portion (25) of the central contact has a cross-section that is substantially U- or V-shaped.
  3. A method according to any one of the preceding claims, characterized in that the crimping tool (50) comprises an opening (53) into which the crimping portion (25) of the central contact engages during crimping, and in that the bearing surface (52) of the tool presents a cross-section of a shape that flares towards the opening, at least in the vicinity of said opening (53).
  4. A method according to any one of the preceding claims, characterized in that the bearing surface (52) of the tool presents a shape that, at the end of the stroke of the tool during crimping, substantially matches the shape of the side wall(s) (27; 30; 31) of the bearing portion (20) of the insulating body.
  5. A method according to any one of the preceding claims, characterized in that the bearing surface (52) is formed in a cavity (51) of the crimping tool, the cavity having for instance an end wall (54) of cross-section that is substantially m-shaped.
  6. A method according to any one of the preceding claims, characterized in that the bearing portion (20) of the insulating body extends substantially entirely beneath the crimping portion (25) of the central contact.
  7. A method according to any one of the preceding claims, characterized in that the bearing portion (20) of the insulating body has a cross-section of a shape that flares downwards.
  8. A method according to claim 7, characterized in that the bearing portion (20) of the insulating body comprises at least one side wall (27) with a first plane portion (28) substantially adjacent to the top face (22) of the bearing portion, and with a second plane portion (27) below the first portion and not parallel thereto.
  9. A method according to any one of the preceding claims, characterized in that the bearing portion (20) of the insulating body comprises at least one plane side wall (30; 31).
  10. A method according to any one of claims 1 to 7, characterized in that the bearing portion comprises two side walls (31) that are parallel, especially plane.
  11. A method according to any one of the preceding claims, characterized in that the bearing portion (20) of the insulating body comprises a setback (23) in its top face (22).
  12. A method according to any one of the preceding claims, characterized in that the insulating body (3) comprises a portion (6), especially substantially cylindrical to which the bearing portion (20) is connected, and having a recess (33) arranged to receive at least part of the central contact.
  13. A method according to any one of the preceding claims, characterized in that the insulating body is made (3) of a high performance polymer.
  14. A method according to any one of the preceding claims, characterized in that the electrical connector comprises an outer conductive body (2) provided with a wall surrounding the central contact and the bearing portion (20) of the insulating body, at least in part, said bearing portion resting against said wall of the outer body.
  15. A method according to claim 14, characterized in that the outer conductive body (2) comprises at least one crimping portion (10; 11) for crimping against at least one of the shielding braids (15) and the outer insulating sheath (13) of the coaxial cable, wherein said crimping portion (10; 11) has a cross-section that is especially U- or V-shaped, with branches of the U- or V-shape being provided with at least one tooth (19).
  16. An electrical connector for mounting on a coaxial cable, the connector comprising:
    · a central contact (4) extending along a longitudinal axis and provided with at least one crimping portion suitable for being crimped on a central conductor of the coaxial cable,
    · an insulating body (3) comprising a bearing portion having a top face against which at least part of the crimping portion of the central contact bears, said bearing portion having at least one side wall extending substantially along said longitudinal axis, and being
    characterized by
    · at least one empty space (40) adjacent to the side wall of the bearing portion of the insulating body, at least part of said empty space extending beneath the crimping portion of the central contact.
  17. A connector according to claim 16, characterized in that the crimping portion of the central contact has a cross-section that is substantially U- or V-shaped.
  18. A connector according to one of claims 16 and 17, characterized in that the bearing portion of the insulating body extends substantially entirely beneath the crimping portion of the central contact.
  19. A connector according to any one of claims 16 to 18, characterized in that the top face of the bearing portion of the insulating body comprises a setback extending along the longitudinal axis (X).
EP05300854A 2004-10-27 2005-10-25 Method of mounting an electrical connector on a coaxial cable and such a connector Active EP1653574B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0452461A FR2877150B1 (en) 2004-10-27 2004-10-27 METHOD FOR MOUNTING AN ELECTRICAL CONNECTOR ON A COAXIAL CABLE, AND SUCH A CONNECTOR

Publications (2)

Publication Number Publication Date
EP1653574A1 EP1653574A1 (en) 2006-05-03
EP1653574B1 true EP1653574B1 (en) 2008-05-28

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EP05300854A Active EP1653574B1 (en) 2004-10-27 2005-10-25 Method of mounting an electrical connector on a coaxial cable and such a connector

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US (1) US7160150B2 (en)
EP (1) EP1653574B1 (en)
KR (1) KR101167526B1 (en)
CN (1) CN100533859C (en)
AT (1) AT397311T (en)
BR (1) BRPI0504778B1 (en)
DE (1) DE602005007148D1 (en)
ES (1) ES2307133T3 (en)
FR (1) FR2877150B1 (en)
MX (1) MXPA05011347A (en)

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Also Published As

Publication number Publication date
FR2877150B1 (en) 2007-01-19
CN100533859C (en) 2009-08-26
BRPI0504778B1 (en) 2017-12-05
BRPI0504778A (en) 2006-07-18
KR101167526B1 (en) 2012-07-20
EP1653574A1 (en) 2006-05-03
FR2877150A1 (en) 2006-04-28
ES2307133T3 (en) 2008-11-16
US20060089046A1 (en) 2006-04-27
AT397311T (en) 2008-06-15
KR20060049388A (en) 2006-05-18
DE602005007148D1 (en) 2008-07-10
US7160150B2 (en) 2007-01-09
CN1767267A (en) 2006-05-03
MXPA05011347A (en) 2006-05-02

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