EP0721239A1 - Manufacturing process for an electrical cable connector, electrical cable and high-voltage transformer provided with such cables - Google Patents

Manufacturing process for an electrical cable connector, electrical cable and high-voltage transformer provided with such cables Download PDF

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Publication number
EP0721239A1
EP0721239A1 EP95402909A EP95402909A EP0721239A1 EP 0721239 A1 EP0721239 A1 EP 0721239A1 EP 95402909 A EP95402909 A EP 95402909A EP 95402909 A EP95402909 A EP 95402909A EP 0721239 A1 EP0721239 A1 EP 0721239A1
Authority
EP
European Patent Office
Prior art keywords
core
sheath
cable
disc
flexible conductive
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.)
Granted
Application number
EP95402909A
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German (de)
French (fr)
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EP0721239B1 (en
Inventor
Bernard Escallier
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.)
Thomson Television Components France SA
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Thomson Television Components France SA
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Publication date
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Publication of EP0721239A1 publication Critical patent/EP0721239A1/en
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Publication of EP0721239B1 publication Critical patent/EP0721239B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/28—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for wire processing before connecting to contact members, not provided for in groups H01R43/02 - H01R43/26
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-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
    • H01R4/02—Soldered or welded connections
    • H01R4/028—Soldered or welded connections comprising means for preventing flowing or wicking of solder or flux in parts not desired
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49174—Assembling terminal to elongated conductor
    • Y10T29/49179—Assembling terminal to elongated conductor by metal fusion bonding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
    • Y10T29/4921—Contact or terminal manufacturing by assembling plural parts with bonding
    • Y10T29/49211—Contact or terminal manufacturing by assembling plural parts with bonding of fused material
    • Y10T29/49213—Metal

Definitions

  • the present invention relates to the field of electric cables, and in particular electric cables with flexible conductive core.
  • the invention also relates to high voltage transformers which are equipped with high voltage electric cables for, for example, electrically supplying electrical components inside an electronic device, such as a television set.
  • the object of the present invention is to propose a simple and effective solution making it possible to stiffen the flexible conductive core of the electric cables to be used in particular in high voltage transformers provided with conductive connection pads.
  • the invention also relates to a method of manufacturing a rigid connector for an electric cable with a flexible conductive core.
  • the invention further relates to an electric cable with flexible core, at least one end of which is rigidified in a particular way.
  • the invention also relates to a high voltage transformer equipped with flexible electrical cables, one end of the core of which is stiffened so as to allow it to be easily inserted into the conductive connection pads of the transformer.
  • the method of manufacturing a connector associated with an electric cable with flexible conductive core consists in stripping one end of the cable by removing the protective plastic sheath around the flexible conductive core, to be fixed to the stripped end of the cable in axial abutment against the sheath, a metal disc which has a diameter less than or equal to the diameter of the sheath and which is provided with a central hole through which the flexible conductive core passes, and to stiffen the conductive core flexible by a conductive weld which also makes the core integral with the metal disc.
  • an electric cable is provided with a flexible conductive core surrounded by an insulating sheath of plastic.
  • the cable has a stripped end by removing the sheath around the core, a metal disc with a diameter less than or equal to the diameter of the sheath and which is provided with a central hole through which the core of the cable passes, the disc being in axial abutment against the sheath.
  • a deposit of conductive solder on the stripped core stiffens the core while making it mechanically integral with the metal disc.
  • the disc has pins on the surface oriented towards the sheath and which sink into the sheath to ensure at least temporary maintenance of the disc on the cable.
  • the pins can be obtained by stamping the disc and can be evenly distributed on a circle concentric with the central hole of the disc.
  • the central hole is delimited by a frustoconical neck which ensures the centering of the disc around the core and reinforces the mechanical cohesion of the assembly once covered with solder.
  • a high voltage transformer comprising a coil enclosed in an insulating casing, flexible conductive pads in which the coil output conductors are inserted, and flexible high voltage cables, the stripped ends of which are stiffened as indicated above. above to be easily inserted into the conductive pads.
  • Figure 1 shows a high voltage transformer of the type described in European Patent No. 0 236 642 with high voltage cables with flexible core.
  • the transformer 1 can be used to power the cathode ray tube of a television set and comprises a magnetic circuit 2, a winding 3 with several windings, and pins 4 for electrical connection between the winding 3 and another electrical component not shown.
  • the winding 3 has two high voltage outputs, one of which supplies, via a potentiometric block not shown, the grids of the cathode ray tube not shown, and the other of which supplies the anode of the cathode ray tube.
  • High voltage flexible cables 5 and 6 supply high voltages from the two winding outputs 3.
  • the winding 3 comprises a protective resin casing which comprises two safety chimneys 7, 8 intended to receive the stripped exposed ends 5a and 6a of the cables 5 and 6 respectively (the stiffening of the stripped ends is described below).
  • the height of the chimneys 7, 8 is determined as a function of the corresponding high output voltage.
  • Each chimney 7, 8 has internally at its base a flexible pad 9 made of silicone charged with conductive powder allowing the electrical connection between a high voltage output 10 of the winding 3 and the stiffened end 5a of the corresponding cable 5.
  • the electrical connection between the outlet 10 and the stripped end 5a of the cable 5 is made by driving the end 5a and the outlet conductor 10 into the conductive pad 9.
  • bleeder the end of a conductor 11 from a load resistor 12 called "bleeder" is also inserted into the lower face of the conductive pad 9. It is the same for the conductive patch not shown linked to the chimney 8.
  • a clip 13 is associated with each cable 5, 6 , 14 which cooperates with the ends 15, 16 of the chimneys 7, 8 by clipping.
  • FIGS. 2a and 2b to explain in more detail the production of the stiffened ends 5a, 6a of the high-voltage flexible cables 5, 6.
  • the flexible cable 20 includes a flexible conductive core 21 stranded stranded and an insulating sheath 22 of flexible plastic coaxially surrounding the flexible conductive core 21.
  • One end of the cable 20 is stripped by removing sheath 22 around the flexible conductive core 21
  • a flat metal disc 23 of small thickness has a diameter less than or equal to the diameter of the sheath 22 and a central hole 24 delimited by a frustoconical neck 25, as well as several pins 26 obtained by stamping the disk 23.
  • the pins 26 are of preferably distributed regularly over a circular path concentric with the central hole 24 and directed perpendicular to the plane of the disc in a direction opposite to the frustoconical neck 25.
  • the flexible conductive core 21 of the cable 20 is threaded axially into the central hole 24.
  • the disc 23 with its pins 26 directed axially approaches the sheath 22 of the cable 20.
  • the pins 26 then sink axially into the sheath 22 until the disc 23 is in axial abutment against the sheath 22 (the distance separating the sheath 22 and the disc 23 in Figure 2b is artificially drawn to better distinguish these two elements) .
  • the insertion of the pins in the sheath 22 allows good fixing of the disc 23 on the cable 20, the frustoconical neck 25 making it possible to center the disc 23 around the flexible conductive core 21.
  • a conductive solder is then deposited, for example by soldering using a tin-lead alloy on the flexible conductive core 21.
  • the solder in the hot liquid state infiltrates by capillary action into the spaces. available of the stranded strand constituting the flexible conductive core and covers the frustoconical neck 25, so that on cooling of the weld, on the one hand, a conductive end 27 is stiffened of the cable 20 coming from the flexible conductive core 21 and on the other hand, welding making the metal disc 23 and the conductive end 27 integral.
  • the connector thus obtained in the form of a T is very resistant to buckling, which improves the mechanical characteristics of the removable insertion of the cable 20 into the conductive pad 9.
  • the choice of the diameter of the disc 23 less than or equal to the diameter of the sheath 22 of the cable 20 allows the use of the clipping system 13 to 16 as shown in FIG. 1.
  • the device of the invention makes it possible, in a simple way, to make the flexible electric cables usable in circumstances where a priori they do not lend themselves to it, in particular for cases where the flexibility of the conductive core is disabling to ensure the electrical connection.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Insulated Conductors (AREA)
  • Cable Accessories (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

The method involves surrounding a multistrand twisted conductive core (21) by a coaxial plastic insulating sheath (22) which is stripped at one end so that the core can be threaded through the central hole (24) of a thin metallic disc (23). Spikes (26) preferably distributed uniformly in a ring around the central hole are driven into the end face of the sheath to secure the disc to the end of the cable. Conductive solder (e.g. Sn-Pb alloy) deposited on to the cable core is drawn by capillary attraction into the spaces between its strands, and covers the tapered neck (25) around the hole which guides the insertion of the core.

Description

La présente invention concerne le domaine des câbles électriques, et en particulier les câbles électriques à âme conductrice souple. L'invention concerne également les transformateurs haute tension qui sont équipés de câbles électriques haute tension pour par exemple alimenter électriquement des composants électriques à l'intérieur d'un appareil électronique, tel qu'un téléviseur.The present invention relates to the field of electric cables, and in particular electric cables with flexible conductive core. The invention also relates to high voltage transformers which are equipped with high voltage electric cables for, for example, electrically supplying electrical components inside an electronic device, such as a television set.

Dans le domaine des transformateurs haute tension, la connexion électrique entre les sorties hautes tension du transformateur et les câbles électriques haute tension de sortie était pendant longtemps un problème technique délicat à résoudre.In the field of high-voltage transformers, the electrical connection between the high-voltage outputs of the transformer and the high-voltage electrical output cables was for a long time a difficult technical problem to solve.

On connaît récemment par le brevet européen n° 0 236 642 une solution simple et satisfaisante à ce problème. Il s'agit d'introduire dans le boîtier isolant du transformateur des pastilles souples en silicone chargé de poudre conductrice qui constituent une interface de connexion électrique entre les sorties haute tension des enroulements du transformateur et les câbles haute tension de sortie. Il suffit d'enfoncer les extrémités des conducteurs dans les pastilles en silicone chargé de poudre conductrice pour assurer la connexion électrique entre ces conducteurs.A simple and satisfactory solution to this problem is recently known from European patent No. 0 236 642. This involves introducing into the insulating housing of the transformer flexible silicone pellets loaded with conductive powder which constitute an interface for electrical connection between the high voltage outputs of the transformer windings and the high voltage output cables. It suffices to insert the ends of the conductors into the silicone pellets loaded with conductive powder to ensure the electrical connection between these conductors.

Cette solution ne peut être mise en oeuvre de manière fiable que si les conducteurs qui sont enfoncés dans les pastilles conductrices sont suffisamment rigides pour être assemblés de façon amovible (et répétitive en cas de besoin) dans les pastilles conductrices de connexion. Les câbles utilisés selon ce brevet antérieur sont à âme rigide.This solution can only be implemented reliably if the conductors which are inserted into the conductive pads are rigid enough to be removably assembled (and repetitive if necessary) in the conductive connection pads. The cables used according to this prior patent have a rigid core.

Cependant, il peut être souhaitable voire avantageux dans certaines circonstances d'utiliser des câbles à âme souple au lieu des câbles à âme rigide. C'est par exemple le cas lorsque le transformateur haute tension est utilisé dans un emplacement réduit (à l'intérieur d'un poste de télévision par exemple), car les câbles souples sont plus maniables que les câbles rigides. De plus, étant donnée la haute tension (pouvant aller jusqu'à 50 Kvolts), les normes de sécurité exigent que le boîtier isolant du transformateur comporte des cheminées de sécurité qui séparent, d'une part les points de connexion (pastilles conductrices par exemple) entre les sorties haute tension des enroulements du transformateur et les extrémités des câbles haute tension de sortie, et d'autre part le milieu environnant, d'une certaine distance se traduisant par la hauteur des cheminées. Les câbles haute tension sortant de ces cheminées augmentent plus ou moins l'encombrement du transformateur dans le prolongement des cheminées selon la souplesse des câbles. Plus les câbles sont souples, plus on peut réduire l'encombrement supplémentaire du transformateur haute tension causé par les câbles de sortie.However, it may be desirable or even advantageous in certain circumstances to use flexible core cables instead of rigid core cables. This is for example the case when the high voltage transformer is used in a reduced location (inside a television set for example), since flexible cables are more manageable than rigid cables. In addition, given the high voltage (up to 50 Kvolts), safety standards require that the insulating housing of the transformer has safety chimneys which separate, on the one hand the connection points (conductive pads for example ) between the high voltage outputs of the transformer windings and the ends of the high voltage output cables, and on the other hand the surrounding environment, a certain distance resulting in the height of the chimneys. The high-voltage cables leaving these chimneys more or less increase the size of the transformer in the extension of the chimneys according to the flexibility of the cables. The more flexible the cables, the more we can reduce the extra space of the high voltage transformer caused by the output cables.

Il peut être envisagé d'associer à l'âme souple d'un câble dénudé une cosse électrique sertie sur la gaine du câble, afin de permettre l'utilisation du câble souple dans les transformateurs haute tension munis de pastilles conductrices de connexion. Mais la cosse électrique crée un encombrement radial au câble qui peut être genant dans certaines techniques, notamment celle du clipsage de câble selon le brevet européen n° 0 236 642.It can be envisaged to associate with the flexible core of a stripped cable an electrical terminal crimped on the sheath of the cable, in order to allow the use of the flexible cable in high voltage transformers provided with conductive connection pads. However, the electrical terminal creates a space requirement radial to the cable which can be inconvenient in certain techniques, in particular that of cable clipping according to European patent n ° 0 236 642.

La présente invention a pour objet de proposer une solution simple et efficace permettant de rigidifier l'âme conductrice souple des câbles électriques pour être utilisée notamment dans des transformateurs haute tension munis de pastilles conductrices de connexion.The object of the present invention is to propose a simple and effective solution making it possible to stiffen the flexible conductive core of the electric cables to be used in particular in high voltage transformers provided with conductive connection pads.

L'invention a également pour objet un procédé de fabrication d'un connecteur rigide pour câble électrique à âme conductrice souple.The invention also relates to a method of manufacturing a rigid connector for an electric cable with a flexible conductive core.

L'invention a en outre pour objet un câble électrique à âme souple dont au moins une extrémité est rigidifiée d'une façon particulière.The invention further relates to an electric cable with flexible core, at least one end of which is rigidified in a particular way.

L'invention a encore pour objet un transformateur haute tension équipé de câbles électriques souples dont une extrémité de l'âme est rigidifiée de façon à permettre son enfoncement aisé dans les pastilles conductrices de connexion du transformateur.The invention also relates to a high voltage transformer equipped with flexible electrical cables, one end of the core of which is stiffened so as to allow it to be easily inserted into the conductive connection pads of the transformer.

Le procédé de fabrication d'un connecteur associé à un câble électrique à âme conductrice souple, selon l'invention, consiste à dénuder une extrémité du câble en enlevant la gaine plastique de protection autour de l'âme conductrice souple, à fixer à l'extrémité dénudée du câble en butée axiale contre la gaine, un disque métallique qui a un diamètre inférieur ou égal au diamètre de la gaine et qui est muni d'un trou central traversé par l'âme conductrice souple, et à rigidifier l'âme conductrice souple par une soudure conductrice qui rend également l'âme solidaire du disque métallique.The method of manufacturing a connector associated with an electric cable with flexible conductive core, according to the invention, consists in stripping one end of the cable by removing the protective plastic sheath around the flexible conductive core, to be fixed to the stripped end of the cable in axial abutment against the sheath, a metal disc which has a diameter less than or equal to the diameter of the sheath and which is provided with a central hole through which the flexible conductive core passes, and to stiffen the conductive core flexible by a conductive weld which also makes the core integral with the metal disc.

Selon l'invention, on fournit un câble électrique à âme conductrice souple entourée par une gaine isolante en matière plastique. Le câble comporte une extrémité dénudée par enlèvement de la gaine autour de l'âme, un disque métallique de diamètre inférieur ou égal au diamètre de la gaine et qui est pourvu d'un trou central traversée par l'âme du câble, le disque étant en butée axiale contre la gaine. Un dépôt de soudure conductrice sur l'âme dénudée rigidifie l'âme tout en la rendant solidaire mécaniquement du disque métallique.According to the invention, an electric cable is provided with a flexible conductive core surrounded by an insulating sheath of plastic. The cable has a stripped end by removing the sheath around the core, a metal disc with a diameter less than or equal to the diameter of the sheath and which is provided with a central hole through which the core of the cable passes, the disc being in axial abutment against the sheath. A deposit of conductive solder on the stripped core stiffens the core while making it mechanically integral with the metal disc.

De préférence, le disque comporte des picots sur la surface orientée vers la gaine et qui s'enfoncent dans la gaine pour assurer le maintien au moins provisoire du disque sur le câble. Les picots peuvent être obtenus par estampage du disque et peuvent être régulièrement répartis sur un cercle concentrique au trou central du disque. Avantageusement, le trou central est délimité par un col tronconique qui assure le centrage du disque autour de l'âme et renforce la cohésion mécanique de l'ensemble une fois recouvert de soudure.Preferably, the disc has pins on the surface oriented towards the sheath and which sink into the sheath to ensure at least temporary maintenance of the disc on the cable. The pins can be obtained by stamping the disc and can be evenly distributed on a circle concentric with the central hole of the disc. Advantageously, the central hole is delimited by a frustoconical neck which ensures the centering of the disc around the core and reinforces the mechanical cohesion of the assembly once covered with solder.

Selon l'invention, on obtient un transformateur haute tension comportant un bobinage enfermé dans un bottier isolant, des pastilles souples conductrices dans lesquelles sont enfoncés les conducteurs de sortie du bobinage, et des câbles souple haute tension dont les extrémités dénudées sont rigidifiées comme Indiqué ci-dessus pour être enfoncées aisément dans les pastilles conductrices.According to the invention, a high voltage transformer is obtained comprising a coil enclosed in an insulating casing, flexible conductive pads in which the coil output conductors are inserted, and flexible high voltage cables, the stripped ends of which are stiffened as indicated above. above to be easily inserted into the conductive pads.

L'invention sera mieux comprise et d'autres avantages de l'invention apparaîtront à l'étude de la description détaillée d'un exemple de réalisation particulier non limitatif et illustré sur des dessins annexés :

  • la figure 1 est une vue schématique d'un transformateur haute tension du type comportant des pastilles conductrices de connexion selon l'invention,
  • la figure 2a est une vue éclatée d'une extrémité d'un câble électrique à âme souple et d'un disque métallique selon l'invention,
  • la figure 2b est une vue de côté du câble selon la figure 2a à l'état assemblé.
The invention will be better understood and other advantages of the invention will appear on studying the detailed description of a particular non-limiting exemplary embodiment and illustrated in the accompanying drawings:
  • FIG. 1 is a diagrammatic view of a high voltage transformer of the type comprising conductive connection pads according to the invention,
  • FIG. 2a is an exploded view of one end of an electric cable with flexible core and of a metal disc according to the invention,
  • Figure 2b is a side view of the cable according to Figure 2a in the assembled state.

La figure 1 montre un transformateur haute tension du type décrit dans le brevet européen n° 0 236 642 avec des câbles haute tension à âme souple. Le transformateur 1 peut être utilisé pour alimenter le tube cathodique d'un téléviseur et comporte un circuit magnétique 2, un bobinage 3 à plusieurs enroulements, et des broches 4 de connexion électrique entre le bobinage 3 et un autre composant électrique non représenté. Le bobinage 3 comporte deux sorties haute tension dont l'une alimente, via un bloc potentiométrique non représenté les grilles du tube cathodique non représenté, et dont l'autre alimente l'anode du tube cathodique. Des câbles souples haute tension 5 et 6 assurent l'alimentation en hautes tensions issues des deux sorties du bobinage 3.Figure 1 shows a high voltage transformer of the type described in European Patent No. 0 236 642 with high voltage cables with flexible core. The transformer 1 can be used to power the cathode ray tube of a television set and comprises a magnetic circuit 2, a winding 3 with several windings, and pins 4 for electrical connection between the winding 3 and another electrical component not shown. The winding 3 has two high voltage outputs, one of which supplies, via a potentiometric block not shown, the grids of the cathode ray tube not shown, and the other of which supplies the anode of the cathode ray tube. High voltage flexible cables 5 and 6 supply high voltages from the two winding outputs 3.

Le bobinage 3 comporte une enveloppe protectrice en résine qui comporte deux cheminées 7, 8 de sécurité destinées à recevoir les extrémités dénudées rigidifiées 5a et 6a des câbles 5 et 6 respectivement (la rigidification des extrémités dénudées est décrite ci-après). La hauteur des cheminées 7, 8 est déterminée en fonction de la haute tension de sortie correspondante. Chaque cheminée 7, 8 comporte intérieurement à son embase une pastille souple 9 en silicone chargé de poudre conductrice permettant la connexion électrique entre une sortie haute tension 10 du bobinage 3 et l'extrémité rigidifiée 5a du câble 5 correspondant. La connexion électrique entre la sortie 10 et l'extrémité dénudée 5a du câble 5 se fait par enfoncement de l'extrémité 5a et du conducteur de sortie 10 dans la pastille conductrice 9.The winding 3 comprises a protective resin casing which comprises two safety chimneys 7, 8 intended to receive the stripped exposed ends 5a and 6a of the cables 5 and 6 respectively (the stiffening of the stripped ends is described below). The height of the chimneys 7, 8 is determined as a function of the corresponding high output voltage. Each chimney 7, 8 has internally at its base a flexible pad 9 made of silicone charged with conductive powder allowing the electrical connection between a high voltage output 10 of the winding 3 and the stiffened end 5a of the corresponding cable 5. The electrical connection between the outlet 10 and the stripped end 5a of the cable 5 is made by driving the end 5a and the outlet conductor 10 into the conductive pad 9.

Avantageusement, dans la face inférieure de la pastille conductrice 9 est enfoncée également l'extrémité d'un conducteur 11 issue d'une résistance de charge 12 dite "bleeder". Il en est de même pour la pastille conductrice non représentée liée à la cheminée 8.Advantageously, the end of a conductor 11 from a load resistor 12 called "bleeder" is also inserted into the lower face of the conductive pad 9. It is the same for the conductive patch not shown linked to the chimney 8.

Afin d'assurer le maintien mécanique des câbles haute tension 5, 6 dans les cheminées 7, 8 contre les mouvements d'arrachements, et par voie de conséquence assurer la qualité de connexion électrique, on associe à chaque câble 5, 6 un clip 13, 14 qui coopère avec les extrémités 15, 16 des cheminées 7, 8 par enclipsage.In order to ensure the mechanical retention of the high-voltage cables 5, 6 in the chimneys 7, 8 against tearing movements, and consequently ensuring the quality of the electrical connection, a clip 13 is associated with each cable 5, 6 , 14 which cooperates with the ends 15, 16 of the chimneys 7, 8 by clipping.

On se réfère maintenant aux figures 2a et 2b pour expliquer plus en détail la réalisation des extrémités rigidifiées 5a, 6a des câbles souple haute tension 5, 6.Reference is now made to FIGS. 2a and 2b to explain in more detail the production of the stiffened ends 5a, 6a of the high-voltage flexible cables 5, 6.

Le câble souple 20 comporte une âme conductrice souple 21 toronnée multibrins et une gaine isolante 22 en matière plastique souple entourant coaxialement l'âme conductrice souple 21. Une extrémité du câble 20 est dénudée par enlèvement de gaine 22 autour de l'âme conductrice souple 21. Un disque métallique 23 plat de faible épaisseur présente un diamètre inférieur ou égal au diamètre de la gaine 22 et un trou central 24 délimité par un col tronconique 25, ainsi que plusieurs picots 26 obtenus par estampage du disque 23. Les picots 26 sont de préférence répartis régulièrement sur un trajet circulaire concentrique au trou central 24 et dirigés perpendiculairement au plan du disque dans une direction à l'opposé du col tronconique 25.The flexible cable 20 includes a flexible conductive core 21 stranded stranded and an insulating sheath 22 of flexible plastic coaxially surrounding the flexible conductive core 21. One end of the cable 20 is stripped by removing sheath 22 around the flexible conductive core 21 A flat metal disc 23 of small thickness has a diameter less than or equal to the diameter of the sheath 22 and a central hole 24 delimited by a frustoconical neck 25, as well as several pins 26 obtained by stamping the disk 23. The pins 26 are of preferably distributed regularly over a circular path concentric with the central hole 24 and directed perpendicular to the plane of the disc in a direction opposite to the frustoconical neck 25.

On enfile axialement l'âme conductrice souple 21 du câble 20 dans le trou central 24. Le disque 23 avec ses picots 26 dirigés axialement se rapproche de la gaine 22 du câble 20. Les picots 26 s'enfoncent ensuite axialement dans la gaine 22 jusqu'à ce que le disque 23 soit en butée axiale contre la gaine 22 (la distance séparant la gaine 22 et le disque 23 sur la figure 2b est artificiellement dessinée pour mieux distinguer ces deux éléments). L'enfoncement des picots dans la gaine 22 permet une bonne fixation du disque 23 sur le câble 20, le col tronconique 25 permettant de centrer le disque 23 autour de l'âme conductrice souple 21.The flexible conductive core 21 of the cable 20 is threaded axially into the central hole 24. The disc 23 with its pins 26 directed axially approaches the sheath 22 of the cable 20. The pins 26 then sink axially into the sheath 22 until the disc 23 is in axial abutment against the sheath 22 (the distance separating the sheath 22 and the disc 23 in Figure 2b is artificially drawn to better distinguish these two elements) . The insertion of the pins in the sheath 22 allows good fixing of the disc 23 on the cable 20, the frustoconical neck 25 making it possible to center the disc 23 around the flexible conductive core 21.

On dépose ensuite une soudure conductrice, par exemple au moyen d'un brasage à l'aide d'un alliage étain-plomb sur l'âme conductrice souple 21. La soudure à l'état liquide chaud s'infiltre par capillarité dans les espaces disponibles du toron multibrins constituant l'âme conductrice souple et recouvre le col tronconique 25, si bien qu'au refroidissement de la soudure, d'une part on obtient une extrémité conductrice 27 rigidifiée du câble 20 issue de l'âme conductrice souple 21 et d'autre part un soudage rendant solidaire le disque métallique 23 et l'extrémité conductrice 27. Le connecteur ainsi obtenu sous forme d'un T est très résistant au flambement, ce qui améliore les caractéristiques mécaniques à l'enfoncement amovible du câble 20 dans la pastille conductrice 9.A conductive solder is then deposited, for example by soldering using a tin-lead alloy on the flexible conductive core 21. The solder in the hot liquid state infiltrates by capillary action into the spaces. available of the stranded strand constituting the flexible conductive core and covers the frustoconical neck 25, so that on cooling of the weld, on the one hand, a conductive end 27 is stiffened of the cable 20 coming from the flexible conductive core 21 and on the other hand, welding making the metal disc 23 and the conductive end 27 integral. The connector thus obtained in the form of a T is very resistant to buckling, which improves the mechanical characteristics of the removable insertion of the cable 20 into the conductive pad 9.

Le choix du diamètre du disque 23 inférieur ou égal au diamètre de la gaine 22 du câble 20 permet l'utilisation du système de clipsage 13 à 16 tel que montré à la figure 1.The choice of the diameter of the disc 23 less than or equal to the diameter of the sheath 22 of the cable 20 allows the use of the clipping system 13 to 16 as shown in FIG. 1.

Le dispositif de l'invention permet, d'une manière simple, de rendre les câbles électriques souples utilisables dans des circonstances où a priori ils ne s'y prêtent pas, en particulier pour les cas où la souplesse de l'âme conductrice est handicapante pour assurer la connexion électrique.The device of the invention makes it possible, in a simple way, to make the flexible electric cables usable in circumstances where a priori they do not lend themselves to it, in particular for cases where the flexibility of the conductive core is disabling to ensure the electrical connection.

Claims (10)

Procédé de fabrication d'un connecteur associé à un câble électrique (20) à âme conductrice souple (21), caractérisé en ce qu'il consiste à : - dénuder une extrémité du câble en enlevant la gaine plastique (22) de protection autour de l'âme conductrice souple (21), - fixer à l'extrémité dénudée du câble un disque métallique (23) en butée axiale contre la gaine du câble, le disque présentant un diamètre inférieur ou égal au diamètre de la gaine et étant muni d'un trou central (24) traversé par l'âme conductrice souple, et - rigidifier l'âme conductrice souple par une soudure conductrice qui rend l'âme solidaire du disque métallique. Method for manufacturing a connector associated with an electric cable (20) with flexible conductive core (21), characterized in that it consists of: - strip one end of the cable by removing the protective plastic sheath (22) around the flexible conductive core (21), - Attach a metal disc (23) in axial abutment against the cable sheath at the stripped end of the cable, the disc having a diameter less than or equal to the diameter of the sheath and being provided with a central hole (24) through which the flexible conductive core, and - stiffen the flexible conductive core by a conductive weld which makes the core integral with the metal disc. Procédé selon la revendication 1, caractérisé en ce que la rigidification de l'âme conductrice souple (21) est obtenue au moyen d'un brasage à l'aide d'un alliage étain-plomb.Method according to claim 1, characterized in that the stiffening of the flexible conductive core (21) is obtained by means of soldering using a tin-lead alloy. Câble électrique (5.6 ; 20) à âme conductrice souple (21) entourée d'une gaine isolante (22) en matière plastique, l'une des extrémités du câble étant dénudée par enlèvement de la gaine autour de l'âme, caractérisé en ce qu'il comprend un disque métallique (23) de diamètre inférieur ou égal au diamètre de la gaine et muni d'un trou central (24), le disque étant monté en butée axiale contre la gaine en laissant l'âme traverser le trou central, et un enrobage au moins partiel de l'âme par une soudure conductrice qui rigidifie l'âme et qui rend l'âme rigidifiée (27) solidaire mécaniquement du disque.Electric cable (5.6; 20) with flexible conductive core (21) surrounded by an insulating sheath (22) of plastic material, one end of the cable being stripped by removing the sheath around the core, characterized in that that it comprises a metal disc (23) of diameter less than or equal to the diameter of the sheath and provided with a central hole (24), the disc being mounted in axial abutment against the sheath allowing the core to pass through the central hole , and an at least partial coating of the core with a conductive weld which stiffens the core and which makes the stiffened core (27) mechanically integral with the disc. Câble électrique selon la revendication 3, caractérisé en ce que le disque métallique (23) comporte sur la face orientée vers la gaine des picots (26) qui s'enfoncent axialement dans la gaine.Electric cable according to claim 3, characterized in that the metal disc (23) has on the face oriented towards the sheath pins (26) which are inserted axially into the sheath. Câble électrique selon la revendication 4, caractérisé en ce que les picots (26) sont estampés à partir du disque métallique (23) et sont pliés pour être orientés axialement.Electric cable according to claim 4, characterized in that the pins (26) are stamped from the metal disc (23) and are bent to be oriented axially. Câble électrique selon la revendication 4 ou 5, caractérisé en ce que les picots (26) sont répartis régulièrement sur un trajet circulaire concentrique au trou central (24) du disque métallique.Electric cable according to claim 4 or 5, characterized in that the pins (26) are distributed regularly over a circular path concentric with the central hole (24) of the metal disc. Câble électrique selon l'une des revendications 5 et 6, caractérisé en ce que le disque métallique (23) est plat et de faible épaisseur.Electric cable according to one of claims 5 and 6, characterized in that the metal disc (23) is flat and of small thickness. Câble électrique selon l'une des revendications 3 à 7, caractérisé en ce que le disque métallique (23) comporte un col tronconique (25) délimitant le trou central (24) et faisant saillie dans la direction opposée à la gaine (22) du câble.Electric cable according to one of claims 3 to 7, characterized in that the metal disc (23) has a frustoconical neck (25) delimiting the central hole (24) and projecting in the direction opposite to the sheath (22) of the cable. Câble électrique selon l'une des revendications 3 à 8, caractérisé en ce que l'âme conductrice souple (21) est toronée multibrins.Electric cable according to one of claims 3 to 8, characterized in that the flexible conductive core (21) is stranded stranded. Transformateur haute tension comportant au moins une pastille souple conductrice (9) de connexion électrique pour au moins une de ses sorties (10), et au moins un câble électrique (5,6 ; 20) selon l'une des revendications 3 à 9 comme câble de sortie haute tension coopérant avec la pastille conductrice.High voltage transformer comprising at least one flexible conductive patch (9) for electrical connection for at least one of its outputs (10), and at least one electrical cable (5,6; 20) according to one of claims 3 to 9 as high voltage output cable cooperating with the conductive pad.
EP95402909A 1995-01-05 1995-12-21 Manufacturing process for an electrical cable connector, electrical cable and high-voltage transformer provided with such cables Expired - Lifetime EP0721239B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9500070 1995-01-05
FR9500070A FR2729254A1 (en) 1995-01-05 1995-01-05 METHOD FOR MANUFACTURING A CONNECTOR FOR AN ELECTRIC CABLE, ELECTRIC CABLE AND HIGH VOLTAGE TRANSFORMER EQUIPPED WITH SUCH CABLES

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EP0721239A1 true EP0721239A1 (en) 1996-07-10
EP0721239B1 EP0721239B1 (en) 2000-05-24

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EP95402909A Expired - Lifetime EP0721239B1 (en) 1995-01-05 1995-12-21 Manufacturing process for an electrical cable connector, electrical cable and high-voltage transformer provided with such cables

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US (1) US5750928A (en)
EP (1) EP0721239B1 (en)
JP (1) JPH08265952A (en)
DE (1) DE69517146T2 (en)
FR (1) FR2729254A1 (en)
IN (1) IN186276B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19806128A1 (en) * 1998-02-14 1999-09-09 Mannesmann Sachs Ag Connecting arrangement for producing an electrically conducting transition between conductors
CN106057286A (en) * 2015-04-08 2016-10-26 江苏海达电气有限公司 High-performance conducting rod

Citations (2)

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Publication number Priority date Publication date Assignee Title
GB903043A (en) * 1959-10-16 1962-08-09 E M B Co Ltd A method of forming terminals on an electric cable
FR2282772A1 (en) * 1974-08-22 1976-03-19 Kabel Metallwerke Ghh PROCESS AND INSTALLATION FOR THE REALIZATION BY INJECTION OF A BODY OF CONNECTION PLUG ON AN ELECTRIC CABLE

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US3798589A (en) * 1972-09-27 1974-03-19 Owens Corning Fiberglass Corp Electrical lead
JPS6129080A (en) * 1984-07-19 1986-02-08 アルプス電気株式会社 Film coating terminal and method of producing same
FR2591794B1 (en) * 1985-12-13 1989-01-13 Orega Electro Mecanique HIGH VOLTAGE TRANSFORMER WITHOUT HIGH VOLTAGE OUTPUT CABLES AND WITH REMOVABLE POTENTIOMETRIC BLOCK, PARTICULARLY FOR A TRICHROME CATHODE RAY TUBE

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB903043A (en) * 1959-10-16 1962-08-09 E M B Co Ltd A method of forming terminals on an electric cable
FR2282772A1 (en) * 1974-08-22 1976-03-19 Kabel Metallwerke Ghh PROCESS AND INSTALLATION FOR THE REALIZATION BY INJECTION OF A BODY OF CONNECTION PLUG ON AN ELECTRIC CABLE
US3999289A (en) * 1974-08-22 1976-12-28 Kabel-Und Metallwerke Gutehoffnungshutte Aktiengesellschaft Method of preparing cable ends

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19806128A1 (en) * 1998-02-14 1999-09-09 Mannesmann Sachs Ag Connecting arrangement for producing an electrically conducting transition between conductors
CN106057286A (en) * 2015-04-08 2016-10-26 江苏海达电气有限公司 High-performance conducting rod

Also Published As

Publication number Publication date
IN186276B (en) 2001-07-28
DE69517146T2 (en) 2001-01-25
JPH08265952A (en) 1996-10-11
EP0721239B1 (en) 2000-05-24
FR2729254A1 (en) 1996-07-12
US5750928A (en) 1998-05-12
FR2729254B1 (en) 1997-03-07
DE69517146D1 (en) 2000-06-29

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