EP0236642A1 - High-voltage connection device, particularly for a high-voltage transformer - Google Patents

High-voltage connection device, particularly for a high-voltage transformer Download PDF

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Publication number
EP0236642A1
EP0236642A1 EP86402729A EP86402729A EP0236642A1 EP 0236642 A1 EP0236642 A1 EP 0236642A1 EP 86402729 A EP86402729 A EP 86402729A EP 86402729 A EP86402729 A EP 86402729A EP 0236642 A1 EP0236642 A1 EP 0236642A1
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EP
European Patent Office
Prior art keywords
transformer
cable
connection device
high voltage
chimney
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Application number
EP86402729A
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German (de)
French (fr)
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EP0236642B1 (en
EP0236642B2 (en
Inventor
Joel Vincent
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Orega Electronique et Mecanique
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Orega Electronique et Mecanique
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/42—Flyback transformers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/42—Flyback transformers
    • H01F2038/423—Flyback transformers with adjusting potentiometers

Definitions

  • the present invention relates to a high voltage connection device, in particular for a high voltage transformer without high voltage output cables and with a removable potentiometric block.
  • a high voltage (HV) connection such as a car spark plug connection, is generally made using at least one terminal crimped on the connecting wire, this terminal can be a female terminal coming to cover a terminal or a male thimble, or possibly a male thimble fitting into a bowl or a female thimble.
  • HV high voltage
  • a high-voltage transformer intended for the supply of color cathode-ray tubes comprises an integrated potentiometric block which delivers the voltages of the G3 and screen G2 prefocus grids of these tubes.
  • the high voltage cable and the output cables of the gates G2 and G3 are fixed and integral with the transformer. These cables, of varying lengths depending on the users, constitute a hindrance to the manufacture, handling, and mounting of the transformers.
  • the potentiometric block, integrated into the transformer requires internal wiring operations which can affect the reliability of the product.
  • the present invention relates to a HT connection device that is easy and quick to implement and does not require any special equipment.
  • the present invention also relates to a connection device for a high voltage transformer whose output cables such as the cable connecting to the potentiometric block and the high voltage cable are removable and establish a reliable connection as simple as possible.
  • the HV connection according to the invention comprises a sleeve in insulating material, preferably rigid, in which is fixed a conductive patch of material in which tapered bodies such as conductive wire cores can be easily inserted, this material advantageously being a silicone charged with electrically conductive powder.
  • the high voltage transformer includes removable connection means for connecting high voltage output cables to it.
  • These means comprise, for each output of the transformer, a quick cable hooking device and a device for contacting the conductor or the core of the cable.
  • the quick coupling device is a clipping device comprising a first part integral with a "chimney" molded integrally with the envelope covering the coating insulation of the transformer winding , the internal diameter of this chimney being substantially equal to the external diameter of the cable, the base of this chimney being located above or near the corresponding terminal or outlet, this terminal or outlet being connected to a conductive pad, preferably made of silicone loaded with conductive material, this pellet sealingly closing the base of the chimney, the second part of the clipping device being fixed on the cable near its end and positioned so that the end of the conductor or of the cable core is in good contact with said pad when the end of the cable is pressed into the chimney and the two parts of the quick coupling device are in mutual engagement.
  • FIG. 4 shows a HT connection device according to the invention.
  • the example shown relates to the connection between an automobile spark plug and a THT supply wire for this spark plug, but it should be understood that the invention is not limited to such an application and can be used for establish any HV connection, or even low voltage, provided that a low current is passed through.
  • a sleeve 32 is produced. made of rigid insulating material having approximately in its middle a constriction 33. One of the ends of the sleeve 32 comes to cap the spark plug 30, the constriction 33 forming a stop for the upper part of the spark plug. To ensure the seal on the side of the spark plug, an inner groove can be made near the edge of this end of the sleeve in which there is an appropriate seal 34.
  • the spark plug electrode ends in an axial metal point 35.
  • a conductive pad 36 is inserted by slightly forcing it, coming into abutment on the constriction 33.
  • the length of said other end of the sleeve 32 is greater than the length of the patch 36, which is fixed there by a ring 37 which can be either screwed, glued or force-fitted.
  • the hole of the ring 37 is cylindrical towards the outside of the sleeve and conical towards the patch 36.
  • the cylindrical part of this hole has a diameter slightly smaller than the outside diameter of the insulation of the wire 31, while that its tapered part serves to guide, if necessary, the stripped end (end of the core) 38 of the wire 31, which comes to sink into the patch 36.
  • the ring 37 advantageously acts as a means of sealing of the connection on the side of the wire 31.
  • the tip 35 is inserted into the pad 36 opposite the core 38.
  • the pad 36 is advantageously made of silicone charged with electrically conductive powder.
  • the tip 35 and the core 38 can be inserted easily, without necessarily being sharp and without the risk of twisting, the core 38 having to be relatively rigid nonetheless.
  • connection device of the present invention is explained below with reference to a high voltage transformer for television, with a focusing voltage output and a high voltage output for the anode of the cathode ray tube, but it is of course, the invention applies to high voltage transformers for televisions having a different number of outputs, as well as to high voltage transformers reserved for other uses.
  • the high voltage transformer 1 shown in FIG. 1 essentially comprises a magnetic circuit 2 and a winding 3 (not shown in detail) with several windings.
  • This transformer can for example be of the "split diode" type, that is to say of the type with fractional secondary winding, with separation by diodes.
  • the winding 3 is coated with a molding resin, in a leaktight manner, this coating being coated with a protective envelope which is not shown.
  • the transformer 1 has on one of its faces, for example the lower face, several pins 4 connected to primary windings, and possibly low-voltage secondary windings of the winding 3, these pins 4 being intended to fix the transformer 1 on a printed circuit. appropriate and to establish electrical connections with the conductors of this printed circuit.
  • the transformer 1 comprises, in the present case, two high voltage outputs: a focusing voltage output, for supplying, via a cable and a potentiometric block, the grids G2 and G3 of a cathode ray tube (not shown) of which l the anode is supplied with very high voltage via a cable 6 via another output of this transformer.
  • the chimneys 7 and 8 communicate with the interior space of said envelope, and in particular with the connection terminals of the sockets or ends of corresponding high-voltage windings. These chimneys can either stop at their base or junction with the envelope, or, as shown in the drawing, extend inside the envelope to reach the connection terminals, the conduit 9 thus formed at the inside of the enclosure can be used to house elements such as resistors, capacitors, protective elements, etc.
  • the chimney 7 comprises, substantially at its base, a slight conical constriction 10, flaring outwards, allowing the end of the cable to be properly centered in the chimney. Just after this throttling, inwards, there is in the chimney 7, and in the present case more precisely in the conduit 9, a pellet 11 of conductive material, sealingly closing the chimney. According to a preferred embodiment of the invention, this pellet is made of silicone loaded with powder having good electrical conduction.
  • a conductor 12 is inserted into the inner face of the patch 11, connected in a manner not shown, to the high-voltage winding providing the focusing voltage necessary for the gates G2 and G3.
  • the conductor 13 of a discharge resistor 14 called “bleeder” is inserted into the internal face of the patch 11, the other conductor of this resistance being inserted, not shown, in the internal face of the chimney disc 8.
  • a hook device 15 is fitted onto the end of the cable 5, appearing for example, as shown in the drawing, in the form of a socket, one of the ends of which flares out in a conical flange 16 and the other end of which is split along one or two generators.
  • the inside diameter of this socket is substantially equal to the outside diameter of the cable 5.
  • the chimney 7 has at its free end a clipping device 17 cooperating with the hook device 15.
  • the device 17 is a lug or a protuberance formed on the inner wall of the chimney 7.
  • the clipping device is a cylindrical sleeve threaded on the chimney and comprising such a lug.
  • the dimensions of the flange 16 of the lug 17 are such that they can be clipped by firmly holding the cable 5 in the chimney 7, and that one can, if necessary, remove the cable 5 by exerting a strong force. pull on this cable, without damaging them.
  • the lug 17 can be made with the same material as that of the chimney 7, or can be metallic and attached to the chimney.
  • the aforementioned sockets are made of suitable plastic.
  • the socket forming the hook 15 is positioned on the cable 5 so that the stripped end 18 of this cable sinks at least 3 mm into the pad 10 when the hook and the latch are clipped in order to ensure good electrical contact and avoid the formation of ozone.
  • FIG. 2 shows a simplified potentiometric block 19, comprising the potentiometers 20 and 21.
  • the cursors of the potentiometers 20 and 21 are connected, in a manner not shown, by the cables 22 and 23 to the grids G2 and G3 respectively, of the cathode ray tube supplied by the transformer 1.
  • This potentiometric block 19 is either part of one of the printed circuits of the television set, or is fixed on one of these circuits.
  • One end of the cable 5 is connected to the transformer, the other end of the cable 5 is connected to this block, advantageously by a connection device with a conductive pad similar to that fitted to the chimney 7.
  • the cables 22 and 23 can be fixed to the block 19 permanently or removably, and in the latter case, it is also possible to use a quick coupling device and conductive pads.
  • FIG. 3 An embodiment for which the potentiometric block 24, with its potentiometers 25, 26 is fixed to one of the faces of the transformer by clipping (block 24 shown in solid lines for a first solution, and broken lines for two other possibilities).
  • the connecting cables 27 and 28 to the grids G2 and G3 of the cathode ray tube can be fixed to the block 24 permanently or removable, in the latter case also using conductive pads.
  • the removable fixing of the very high voltage cable 6, with its suction cup 6A, in the chimney 8 is similar to that of the cable 5 in the chimney 7, and will not be described in more detail.
  • the high voltage transformer can be placed on its printed circuit in the position for which the influence of its radiation on its environment is the least, and the potentiometric block can be positioned where it is easy to carry out the settings of its potentiometers.
  • Another advantage of the invention is that it makes it possible to dissociate the transformer from the potentiometric block and the corresponding cables, which simplifies repairs in the event of a failure of one of the elements.
  • the transformer manufacturer no longer has to deal with bulky cables, and the user can install the elements of the high-voltage circuit at the end of manufacturing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Cable Accessories (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Details Of Television Scanning (AREA)

Abstract

Le transformateur haute tension de l'invention est relié par enclipsage (15, 17) à ses câbles de sortie haute tension. Les extrémités de ces câbles sont maintenues fermement dans des cheminées (7, 8) moulées avec l'enrobage du bobinage du transformateur. Application: téléviseurs en couleursThe high voltage transformer of the invention is connected by clipping (15, 17) to its high voltage output cables. The ends of these cables are held firmly in chimneys (7, 8) molded with the coating of the transformer winding. Application: color televisions

Description

La présente invention se rapporte à un dispositif de connexion haute tension, en particulier pour un transformateur haute tension sans câbles de sortie haute tension et à bloc potentiométrique amovible.The present invention relates to a high voltage connection device, in particular for a high voltage transformer without high voltage output cables and with a removable potentiometric block.

Une connexion haute tension (HT), telle qu'une connexion de bougie de voiture, est généralement réalisée à l'aide d'au moins une cosse sertie sur le fil de liaison, cette cosse pouvant être une cosse femelle venant coiffer une borne ou une cosse mâle, ou bien pouvant être une cosse mâle s'insérant dans une cuvette ou dans une cosse femelle. Une telle connexion nécessite donc de sertir sur le fil de liaison une cosse, ce qui nécessite un appareillage spécial.A high voltage (HV) connection, such as a car spark plug connection, is generally made using at least one terminal crimped on the connecting wire, this terminal can be a female terminal coming to cover a terminal or a male thimble, or possibly a male thimble fitting into a bowl or a female thimble. Such a connection therefore requires crimping a terminal on the connecting wire, which requires special equipment.

Généralement, un transformateur haute tension destiné à l'alimentation de tubes cathodiques couleur comporte un bloc poten­tiométrique intégré qui délivre les tensions des grilles de pré­focalisation G3 et screen G2 de ces tubes. Cependant, le câble haute tension et les câbles de sortie des grilles G2 et G3 sont fixes et solidaires du transformateur. Ces câbles, de longueurs variables selon les utilisateurs, constituent une gêne à la fabrication, à la manipulation, et au montage des transformateurs. En outre, le bloc potentiométrique, intégré au transformateur, nécessite des opéra­tions de câblage interne qui peuvent nuire à la fiabilité du produit.Generally, a high-voltage transformer intended for the supply of color cathode-ray tubes comprises an integrated potentiometric block which delivers the voltages of the G3 and screen G2 prefocus grids of these tubes. However, the high voltage cable and the output cables of the gates G2 and G3 are fixed and integral with the transformer. These cables, of varying lengths depending on the users, constitute a hindrance to the manufacture, handling, and mounting of the transformers. In addition, the potentiometric block, integrated into the transformer, requires internal wiring operations which can affect the reliability of the product.

La présente invention a pour objet un dispositif de connexion HT facile et rapide à mettre en oeuvre et ne nécessitant aucun appareillage spécial.The present invention relates to a HT connection device that is easy and quick to implement and does not require any special equipment.

La présente invention a également pour objet un dispositif de connexion pour un transformateur haute tension dont les câbles de sortie tels que le câble de liaison au bloc potentiométrique et le câble haute tension soient amovibles et établissent une connexion fiable la plus simple possible.The present invention also relates to a connection device for a high voltage transformer whose output cables such as the cable connecting to the potentiometric block and the high voltage cable are removable and establish a reliable connection as simple as possible.

La connexion HT conforme à l'invention comporte un manchon en matière isolante, de préférence rigide, dans lequel est fixée une pastille conductrice en matériau dans lequel peuvent s'enfoncer facilement des corps effilés tels que des âmes de fils conducteurs, ce matériau étant avantageusement un silicone chargé de poudre électriquement conductrice.The HV connection according to the invention comprises a sleeve in insulating material, preferably rigid, in which is fixed a conductive patch of material in which tapered bodies such as conductive wire cores can be easily inserted, this material advantageously being a silicone charged with electrically conductive powder.

Le transformateur haute tension conforme à l'invention com­porte des moyens de connexion amovible pour lui raccorder des câbles de sortie haute tension. Ces moyens comprennent, pour chaque sortie du transformateur un dispositif d'accrochage rapide de câble et un dispositif de contact avec le conducteur ou l'âme du câble. Selon un mode de réalisation préféré de l'invention, le dispositif d'accrochage rapide est un dispositif de clipsage compor­tant une première partie solidaire d'une "cheminée" moulée intégra­lement avec l'enveloppe recouvrant l'isolant d'enrobage du bobinage du transformateur, le diamètre intérieur de cette cheminée étant sensiblement égal au diamètre extérieur du câble, l'embase de cette cheminée étant située au-dessus ou à proximité de la borne ou prise de sortie correspondante, cette borne ou prise étant reliée à une pastille conductrice, de préférence en silicone chargé de matériau conducteur, cette pastille obturant de façon étanche l'embase de la cheminée, la seconde partie du dispositif de clipsage étant fixée sur le câble près de son extrémité et positionnée de telle façon que l'extrémité du conducteur ou de l'âme du câble soit en bon contact avec ladite pastille lorsque l'extrémité du câble est enfoncée dans la cheminée et que les deux parties du dispositif d'accrochage rapide sont en prise mutuelle.The high voltage transformer according to the invention includes removable connection means for connecting high voltage output cables to it. These means comprise, for each output of the transformer, a quick cable hooking device and a device for contacting the conductor or the core of the cable. According to a preferred embodiment of the invention, the quick coupling device is a clipping device comprising a first part integral with a "chimney" molded integrally with the envelope covering the coating insulation of the transformer winding , the internal diameter of this chimney being substantially equal to the external diameter of the cable, the base of this chimney being located above or near the corresponding terminal or outlet, this terminal or outlet being connected to a conductive pad, preferably made of silicone loaded with conductive material, this pellet sealingly closing the base of the chimney, the second part of the clipping device being fixed on the cable near its end and positioned so that the end of the conductor or of the cable core is in good contact with said pad when the end of the cable is pressed into the chimney and the two parts of the quick coupling device are in mutual engagement.

La présente invention sera mieux comprise à la lecture de la description détaillée de plusieurs modes de réalisation, pris comme exemples non limitatifs, et illustrée par le dessin annexé, sur lequel :

  • - la figure 1 est une vue en coupe partielle d'un transformateur haute tension conforme à l'invention, avec deux câbles de sortie;
  • - la figure 2 est un vue de dessus très simplifiée d'un bloc potentiométrique disposé sur un circuit imprimé distinct du trans­ formateur, ce bloc étant relié à un transformateur tel que celui de la figure 1;
  • - la figure 3 est une vue de face très simplifiée d'un transfor­mateur haute tension conforme à l'invention, montrant plusieurs possibilités de fixation du bloc potentiométrique, et
  • - la figure 4 est une vue en coupe d'un dispositif de connexion HT conforme à l'invention.
The present invention will be better understood on reading the detailed description of several embodiments, taken as nonlimiting examples, and illustrated by the appended drawing, in which:
  • - Figure 1 is a partial sectional view of a high voltage transformer according to the invention, with two output cables;
  • - Figure 2 is a very simplified top view of a potentiometric block arranged on a printed circuit separate from the trans trainer, this block being connected to a transformer such as that of FIG. 1;
  • FIG. 3 is a very simplified front view of a high voltage transformer according to the invention, showing several possibilities of fixing the potentiometric block, and
  • - Figure 4 is a sectional view of a HT connection device according to the invention.

On a représenté sur la figure 4 un dispositif de connexion HT conforme à l'invention. L'exemple représenté se rapporte à la liaison entre une bougie d'automobile et un fil d'alimentation en THT de cette bougie, mais il est bien enetendu que l'invention n'est pas limitée à une telle application et peut être utilisée pour établir toute connexion HT, ou même basse tension, à condition que l'on y fasse passer un courant faible.FIG. 4 shows a HT connection device according to the invention. The example shown relates to the connection between an automobile spark plug and a THT supply wire for this spark plug, but it should be understood that the invention is not limited to such an application and can be used for establish any HV connection, or even low voltage, provided that a low current is passed through.

Dans l'exemple de la figure 4, représenté lorsque la connexion est établie, il s'agit de réaliser une connexion entre une bougie d'allumage 30 et un fil d'alimentation en HT 31. A cet effet, on réalise un manchon 32 en matière isolante rigide comportant à peu près en son milieu un étranglement 33. L'une des extrémités du manchon 32 vient coiffer la bougie 30, l'étranglement 33 formant butée pour la partie supérieure de la bougie. Pour assurer l'étan­chéïté du côté de la bougie, on peut pratiquer près du rebord de cette extrémité du manchon une gorge intérieure dans laquelle on dispose un joint d'étanchéïté approprié 34. L'électrode de la bougie se termine par une pointe métallique axiale 35.In the example of FIG. 4, shown when the connection is established, it involves making a connection between a spark plug 30 and a HT supply wire 31. For this purpose, a sleeve 32 is produced. made of rigid insulating material having approximately in its middle a constriction 33. One of the ends of the sleeve 32 comes to cap the spark plug 30, the constriction 33 forming a stop for the upper part of the spark plug. To ensure the seal on the side of the spark plug, an inner groove can be made near the edge of this end of the sleeve in which there is an appropriate seal 34. The spark plug electrode ends in an axial metal point 35.

Dans l'autre extrémité du manchon 32, dont le profil intérieur est cylindrique, on insère en forçant légèrement une pastille conduc­trice 36, arrivant en butée sur l'étranglement 33. La longueur de ladite autre extrémité du manchon 32 est supérieure à la longueur de la pastille 36, qui y est fixée par une bague 37 qui peut y être soit vissée, soit collée, soit emmanchée à force. Le trou de la bague 37 est cylindrique vers l'extérieur du manchon et cônique vers la pastille 36. La partie cylindrique de ce trou a un diamètre légè­rement inférieur au diamètre extérieur de l'isolant du fil 31, tandis que sa partie cônique sert à guider, le cas échéant, l'extrémité dénudée (extrémité de l'âme) 38 du fil 31, qui vient s'enfoncer dans la pastille 36. Ainsi, la bague 37 fait avantageusement office de moyen d'étanchéïté de la connexion du côté du fil 31. La pointe 35 s'enfonce dans la pastille 36 à l'opposé de l'âme 38. La pastille 36 est avantageusement en silicone chargé de poudre électriquement conductrice. La pointe 35 ainsi que l'âme 38 peuvent s'y enfoncer facilement, sans être nécessairement pointues et sans risque de se tordre, l'âme 38 devant quand même être relativement rigide.In the other end of the sleeve 32, the internal profile of which is cylindrical, a conductive pad 36 is inserted by slightly forcing it, coming into abutment on the constriction 33. The length of said other end of the sleeve 32 is greater than the length of the patch 36, which is fixed there by a ring 37 which can be either screwed, glued or force-fitted. The hole of the ring 37 is cylindrical towards the outside of the sleeve and conical towards the patch 36. The cylindrical part of this hole has a diameter slightly smaller than the outside diameter of the insulation of the wire 31, while that its tapered part serves to guide, if necessary, the stripped end (end of the core) 38 of the wire 31, which comes to sink into the patch 36. Thus, the ring 37 advantageously acts as a means of sealing of the connection on the side of the wire 31. The tip 35 is inserted into the pad 36 opposite the core 38. The pad 36 is advantageously made of silicone charged with electrically conductive powder. The tip 35 and the core 38 can be inserted easily, without necessarily being sharp and without the risk of twisting, the core 38 having to be relatively rigid nonetheless.

Bien entendu, une telle connexion ne permet pas de faire passer des courants très élevés, mais est très bien adaptée pour des courants faibles tels que ceux de bougies d'automobiles ou de transformateurs haute tension de télévision.Of course, such a connection does not allow very high currents to pass, but is very well suited for low currents such as those of automobile spark plugs or high voltage television transformers.

L'utilisation du dispositif de connexion de la présente invention est expliquée ci-dessous en référence à un transformateur haute tension pour téléviseur, avec une sortie de tension de focalisation et une sortie de haute tension pour l'anode du tube cathodique, mais il est bien entendu que l'invention s'applique à des transformateurs haute tension pour téléviseurs comportant un nombre différent de sorties, ainsi qu'à des transformateurs haute tension réservés à d'autres usages.The use of the connection device of the present invention is explained below with reference to a high voltage transformer for television, with a focusing voltage output and a high voltage output for the anode of the cathode ray tube, but it is of course, the invention applies to high voltage transformers for televisions having a different number of outputs, as well as to high voltage transformers reserved for other uses.

Le transformateur haute tension 1 représenté sur la figure 1 comporte essentiellement un circuit magnétique 2 et un bobinage 3 (non représenté en détail) à plusieurs enroulements. Ce transfor­mateur peut par exemple être du type "split diode", c'est-à-dire du type à enroulement secondaire fractionné, à séparation par diodes. Le bobinage 3 est enrobé d'une résine de moulage, de façon étanche, cet enrobage étant revêtu d'une enveloppe protectrice non repré­sentée.The high voltage transformer 1 shown in FIG. 1 essentially comprises a magnetic circuit 2 and a winding 3 (not shown in detail) with several windings. This transformer can for example be of the "split diode" type, that is to say of the type with fractional secondary winding, with separation by diodes. The winding 3 is coated with a molding resin, in a leaktight manner, this coating being coated with a protective envelope which is not shown.

Le transformateur 1 comporte sur une de ses faces, par exemple la face inférieure, plusieurs broches 4 reliées à des enroulements primaires, et éventuellement des enroulements secon­daires basse tension du bobinage 3, ces broches 4 étant destinées à fixer le transformateur 1 sur un circuit imprimé approprié et à établir des connexions électriques avec les conducteurs de ce circuit imprimé.The transformer 1 has on one of its faces, for example the lower face, several pins 4 connected to primary windings, and possibly low-voltage secondary windings of the winding 3, these pins 4 being intended to fix the transformer 1 on a printed circuit. appropriate and to establish electrical connections with the conductors of this printed circuit.

Le transformateur 1 comporte, dans le cas présent, deux sorties à haute tension : une sortie de tension de focalisation, pour alimenter, via un câble et un bloc potentiométrique, les grilles G2 et G3 d'un tube cathodique (non représenté) dont l'anode est alimentée en très haute tension via un câble 6 par une autre sortie de ce transformateur.The transformer 1 comprises, in the present case, two high voltage outputs: a focusing voltage output, for supplying, via a cable and a potentiometric block, the grids G2 and G3 of a cathode ray tube (not shown) of which l the anode is supplied with very high voltage via a cable 6 via another output of this transformer.

Sur la figure 1, on a représenté sur éclaté en coupe les détails de réalisation permettant la connexion de la sortie de tension de focalisation étant bien entendu que la connexion de l'autre sortie à haute tension est réalisée de façon similaire.In Figure 1, there is shown in exploded view in section the construction details allowing the connection of the focusing voltage output, it being understood that the connection of the other high voltage output is carried out in a similar manner.

Au moment du moulage de l'enveloppe de protection de la résine d'enrobage du bobinage 3, on prévoit de former en saillie sur l'enveloppe de protection, de préférence à l'opposé des broches 4, deux "cheminées" 7,8 destinées à recevoir les extrémités des câbles 5,6 respectivement. Ces cheminées sont suffisamment courtes pour ne pas constituer une gêne à l'utilisation et à la manipulation du transformateur, et pour ne pas les rendre fragiles, tout en étant assez longues pour éviter le contournement électrique avec toute partie reliée à la masse. Leur longueur extérieure peut avanta­geusement être de 2 à 4 cm environ. Leur épaisseur de parois, en particulier au niveau de leur embase, doit être suffisante pour ne pas les rendre fragiles, cette épaisseur étant avantageusement de 2 à 5 mm environ.At the time of molding the protective casing of the coating resin of the winding 3, provision is made to form projecting on the protective casing, preferably opposite the pins 4, two "chimneys" 7,8 intended to receive the ends of the cables 5,6 respectively. These chimneys are short enough not to be a hindrance to the use and handling of the transformer, and not to make them fragile, while being long enough to avoid electrical bypass with any part connected to ground. Their outside length can advantageously be from 2 to 4 cm approximately. Their wall thickness, in particular at their base, must be sufficient not to make them fragile, this thickness being advantageously from 2 to 5 mm approximately.

Les cheminées 7 et 8 communiquent avec l'espace intérieur de ladite enveloppe, et en particulier avec les bornes de connexion des prises ou extrémités d'enroulements haute tension correspondantes. Ces cheminées peuvent soit s'arrêter au niveau de leur embase ou jonction avec l'enveloppe, soit, comme représenté sur le dessin, se prolonger à l'intérieur de l'enveloppe pour rejoindre les bornes de connexion, le conduit 9 ainsi formé à l'intérieur de l'enveloppe pouvant servir à loger des éléments tels que résistances, conden­sateurs, éléments de protection, etc.The chimneys 7 and 8 communicate with the interior space of said envelope, and in particular with the connection terminals of the sockets or ends of corresponding high-voltage windings. These chimneys can either stop at their base or junction with the envelope, or, as shown in the drawing, extend inside the envelope to reach the connection terminals, the conduit 9 thus formed at the inside of the enclosure can be used to house elements such as resistors, capacitors, protective elements, etc.

La cheminée 7 comporte, sensiblement au niveau de son embase, un léger étranglement cônique 10, s'évasant vers l'exté­rieur, permettant de bien centrer l'extrémité du câble dans la cheminée. Juste après cet étranglement, vers l'intérieur, on dispose dans la cheminée 7, et dans le cas présent plus précisément dans le conduit 9, une pastille 11 en matériau conducteur, obturant de façon étanche la cheminée. Selon un mode de réalisation préféré de l'invention, cette pastille est en silicone chargé en poudre pré­sentant une bonne conduction électrique.The chimney 7 comprises, substantially at its base, a slight conical constriction 10, flaring outwards, allowing the end of the cable to be properly centered in the chimney. Just after this throttling, inwards, there is in the chimney 7, and in the present case more precisely in the conduit 9, a pellet 11 of conductive material, sealingly closing the chimney. According to a preferred embodiment of the invention, this pellet is made of silicone loaded with powder having good electrical conduction.

On enfonce dans la face intérieure de la pastille 11 un conducteur 12 relié de façon non représentée, à l'enroulement haute tension fournissant la tension de focalisation nécessaire aux grilles G2 et G3.A conductor 12 is inserted into the inner face of the patch 11, connected in a manner not shown, to the high-voltage winding providing the focusing voltage necessary for the gates G2 and G3.

De façon avantageuse, on enfonce dans la face intérieure de la pastille 11 le conducteur 13 d'une résistance de décharge 14 dite "bleeder", l'autre conducteur de cette résistance étant enfoncé, de façon non représentée, dans la face intérieure de la pastille de la cheminée 8.Advantageously, the conductor 13 of a discharge resistor 14 called "bleeder" is inserted into the internal face of the patch 11, the other conductor of this resistance being inserted, not shown, in the internal face of the chimney disc 8.

On enfile sur l'extrémité du câble 5 un dispositif de crochet 15, se présentant par exemple, comme représenté sur le dessin, sous forme d'une douille dont une des extrémités s'évase en collerette cônique 16 et dont l'autre extrémité est fendue selon une ou deux génératrices. Le diamètre intérieur de cette douille est sensi­blement égal au diamètre extérieur du câble 5.A hook device 15 is fitted onto the end of the cable 5, appearing for example, as shown in the drawing, in the form of a socket, one of the ends of which flares out in a conical flange 16 and the other end of which is split along one or two generators. The inside diameter of this socket is substantially equal to the outside diameter of the cable 5.

Par ailleurs, la cheminée 7 comporte à son extrémité libre un dispositif d'enclipsage 17 coopérant avec le dispositif de crochet 15. Selon le mode de réalisation préféré représenté sur le dessin, le dispositif 17 est un ergot ou une protubérance formée sur la paroi intérieure de la cheminée 7. Selon un autre mode de réalisation (non représenté), le dispositif d'enclipsage est une douille cylindrique enfilée sur la cheminée et comportant un tel ergot. Les dimensions de la collerette 16 de l'ergot 17 sont telles qu'ils puissent s'enclipser en maintenant fermement le câble 5 dans la cheminée 7, et que l'on puisse, le cas échéant, retirer le câble 5 en exerçant une forte traction sur ce câble, sans les abîmer. L'ergot 17 peut être réalisé avec le même matériau que celui de la cheminée 7, ou peut être métallique et rapporté sur la cheminée. Les douilles précitées sont en matière plastique appropriée.Furthermore, the chimney 7 has at its free end a clipping device 17 cooperating with the hook device 15. According to the preferred embodiment shown in the drawing, the device 17 is a lug or a protuberance formed on the inner wall of the chimney 7. According to another embodiment (not shown), the clipping device is a cylindrical sleeve threaded on the chimney and comprising such a lug. The dimensions of the flange 16 of the lug 17 are such that they can be clipped by firmly holding the cable 5 in the chimney 7, and that one can, if necessary, remove the cable 5 by exerting a strong force. pull on this cable, without damaging them. The lug 17 can be made with the same material as that of the chimney 7, or can be metallic and attached to the chimney. The aforementioned sockets are made of suitable plastic.

La douille formant le crochet 15 est positionnée sur le câble 5 de façon que l'extrémité dénudée 18 de ce câble s'enfonce d'au moins 3 mm dans la pastille 10 à l'enclipsage du crochet et de l'ergot afin d'assurer un bon contact électrique et éviter la formation d'ozone.The socket forming the hook 15 is positioned on the cable 5 so that the stripped end 18 of this cable sinks at least 3 mm into the pad 10 when the hook and the latch are clipped in order to ensure good electrical contact and avoid the formation of ozone.

On a représenté de façon simplifiée sur la figure 2 un bloc potentiométrique 19, comportant les potentiomètres 20 et 21. Les curseurs des potentiomètres 20 et 21 sont reliés, de façon non représentée, par les câbles 22 et 23 aux grilles G2 et G3 respec­tivement, du tube cathodique alimenté par le transformateur 1. Ce bloc potentiométrique 19 soit fait partie de l'un des circuits imprimés du téléviseur, soit est fixé sur un de ces circuits. L'une des extrémités du câble 5 est reliée au transformateur, l'autre extré­mité du câble 5 est reliée à ce bloc, avantageusement par un dispositif de connexion à pastille conductrice similaire à celui équipant la cheminée 7. Les câbles 22 et 23 peuvent être fixés sur le bloc 19 de façon permanente ou amovible, et dans ce dernier cas, on peut également utiliser un dispositif d'accrochage rapide et des pastilles conductrices.FIG. 2 shows a simplified potentiometric block 19, comprising the potentiometers 20 and 21. The cursors of the potentiometers 20 and 21 are connected, in a manner not shown, by the cables 22 and 23 to the grids G2 and G3 respectively, of the cathode ray tube supplied by the transformer 1. This potentiometric block 19 is either part of one of the printed circuits of the television set, or is fixed on one of these circuits. One end of the cable 5 is connected to the transformer, the other end of the cable 5 is connected to this block, advantageously by a connection device with a conductive pad similar to that fitted to the chimney 7. The cables 22 and 23 can be fixed to the block 19 permanently or removably, and in the latter case, it is also possible to use a quick coupling device and conductive pads.

On a représenté, de façon simplifiée, sur la figure 3, un mode de réalisation pour lequel le bloc potentiométrique 24, avec ses potentiomètres 25,26 est fixé sur l'une des faces du transformateur par clipsage (bloc 24 représenté en traits continus pour une première solution, et en traits interrompus pour deux autres possibilités). Les câbles de liaison 27 et 28 aux grilles G2 et G3 du tube cathodique peuvent être fixés sur le bloc 24 de façon permanente ou amovible, dans ce dernier cas, à l'aide de pastilles conductrices également.There is shown, in a simplified manner, in FIG. 3, an embodiment for which the potentiometric block 24, with its potentiometers 25, 26 is fixed to one of the faces of the transformer by clipping (block 24 shown in solid lines for a first solution, and broken lines for two other possibilities). The connecting cables 27 and 28 to the grids G2 and G3 of the cathode ray tube can be fixed to the block 24 permanently or removable, in the latter case also using conductive pads.

La fixation amovible du câble très haute tension 6, avec sa ventouse 6A, dans la cheminée 8 est similaire à celle du câble 5 dans la cheminée 7, et ne sera pas décrite plus en détail.The removable fixing of the very high voltage cable 6, with its suction cup 6A, in the chimney 8 is similar to that of the cable 5 in the chimney 7, and will not be described in more detail.

Grâce à l'invention, on peut disposer le transformateur haute tension sur son circuit imprimé dans la position pour laquelle l'influence de son rayonnement sur son environnement est la moindre, et on peut positionner le bloc potentiométrique là où il est aisé d'effectuer les réglages de ses potentiomètres.Thanks to the invention, the high voltage transformer can be placed on its printed circuit in the position for which the influence of its radiation on its environment is the least, and the potentiometric block can be positioned where it is easy to carry out the settings of its potentiometers.

Un autre avantage de l'invention est de permettre de dissocier le transformateur du bloc potentiométrique et des câbles corres­pondant, ce qui simplifie les réparations lors d'une défaillance de l'un des éléments.Another advantage of the invention is that it makes it possible to dissociate the transformer from the potentiometric block and the corresponding cables, which simplifies repairs in the event of a failure of one of the elements.

Enfin, le fabricant de transformateurs n'a plus à s'occuper des câbles encombrants, et l'utilisateur peut mettre en place les élé­ments du circuit haute tension en fin de fabrication.Finally, the transformer manufacturer no longer has to deal with bulky cables, and the user can install the elements of the high-voltage circuit at the end of manufacturing.

Claims (11)

1. Dispositif de connexion haute tension, caractérisé par le fait qu'il comporte un manchon (32) en matière isolante dans lequel est fixée une pastille conductrice (36) en matériau dans lequel peuvent s'enfoncer facilement des corps effilés tels que des âmes de fils conducteurs.1. High voltage connection device, characterized in that it comprises a sleeve (32) of insulating material in which is fixed a conductive pad (36) of material in which tapered bodies such as cores can be easily inserted of conductive wires. 2. Dispositif selon la revendication 1, caractérisé par le fait que la pastille est en silicone chargé de poudre conductrice.2. Device according to claim 1, characterized in that the tablet is made of silicone loaded with conductive powder. 3. Dispositif selon la revendication 1 ou 2, caractérisé par le fait que le manchon comporte des moyens d'étanchéïté de la connexion à ses deux extrémités (37,34).3. Device according to claim 1 or 2, characterized in that the sleeve has sealing means of the connection at its two ends (37,34). 4. Dispositif de connexion selon la revendication 1 ou 2, pour un transformateur haute tension sans câbles de sortie haute tension et à bloc potentiométrique amovible, en particulier pour tube cathodique trichrome, comportant des moyens de connexion amo­vible (7, 8) pour lui raccorder des câbles (5, 6) de sortie haute tension, ces moyens de connexion comprenant pour chaque sortie du transformateur, un dispositif d'accrochage rapide (15, 17) de câble et un dispositif de contact (11) avec le conducteur (18) ou l'âme du câble, ce dispositif d'accrochage rapide étant un dispositif de clipsage comportant une première partie (17) solidaire d'une chemi­née (7, 8) moulée intégralement avec l'enveloppe protectrice de l'isolant d'enrobage du bobinage (3) du transformateur, et une seconde partie (15) fixée sur le câble, près de son extrémité, carac­térisé par le fait que l'on dispose, de façon étanche, une pastille conductrice (11) dans la cheminée, l'extrémité (18) du conducteur ou de l'âme du câble étant en bon contact avec cette pastille lorsque l'extrémité du câble est enfoncée dans la cheminée et que les deux parties du dispositif d'accrochage rapide sont en prise mutuelle.4. Connection device according to claim 1 or 2, for a high voltage transformer without high voltage output cables and removable potentiometric block, in particular for trichrome cathode ray tube, comprising removable connection means (7, 8) for connecting it high voltage output cables (5, 6), these connection means comprising for each output of the transformer, a quick cable hooking device (15, 17) and a contact device (11) with the conductor (18) or the cable core, this quick coupling device being a clipping device comprising a first part (17) integral with a chimney (7, 8) molded integrally with the protective envelope of the coating insulation of the winding (3) of the transformer, and a second part (15) fixed on the cable, near its end, characterized in that there is, in a sealed manner, a conductive pad (11) in the chimney, the end (18) of the conductor or the core of the c cable being in good contact with this patch when the end of the cable is inserted into the chimney and the two parts of the quick coupling device are in mutual engagement. 5. Dispositif de connexion selon la revendication 4, caractérisé par le fait que la cheminée comporte un léger étranglement cônique (10) de guidage de l'extrémité du câble (18).5. Connection device according to claim 4, characterized in that the chimney has a slight conical constriction (10) for guiding the end of the cable (18). 6. Dispositif de connexion selon l'une des revendications 4 ou 5, caractérisé par le fait qu'à l'intérieur de l'enveloppe protectrice les extrémités des conducteurs (12, 13) sont également enfoncées dans la pastille conductrice.6. Connection device according to one of claims 4 or 5, characterized in that, inside the protective envelope, the ends of the conductors (12, 13) are also pressed into the conductive pad. 7. Dispositif de connexion selon l'une quelconque des revendi­cations 4 à 6, caractérisé par le fait que son câble de sortie de tension de focalisation (5) est relié de façon amovible au bloc potentiométrique (19,24).7. Connection device according to any one of claims 4 to 6, characterized in that its focusing voltage output cable (5) is detachably connected to the potentiometric block (19,24). 8. Dispositif de connexion selon l'une quelconque des revendi­cations 4 à 7, caractérisé par le fait que le bloc potentiométrique (19) est fixé sur ou fait partie d'un circuit imprimé.8. Connection device according to any one of claims 4 to 7, characterized in that the potentiometric block (19) is fixed to or is part of a printed circuit. 9. Dispositif de connexion selon l'une quelconque des revendi­cations 4 à 7, caractérisé par le fait que le bloc potentiométrique (24) est fixé de façon amovible sur l'une des faces du trans­formateur.9. Connection device according to any one of claims 4 to 7, characterized in that the potentiometric block (24) is removably fixed on one of the faces of the transformer. 10. Dispositif de connexion selon l'une quelconque des revendi­cations 4 à 9, caractérisé par le fait que les câbles (22, 23, 27, 28) de liaison entre le bloc potentiométrique et les grilles du tube cathodique alimenté par le transformateur sont connectés de façon amovible au bloc potentiométrique.10. Connection device according to any one of claims 4 to 9, characterized in that the cables (22, 23, 27, 28) connecting between the potentiometric block and the grids of the cathode-ray tube supplied by the transformer are connected removably to the potentiometric block. 11. Dispositif de connexion selon l'une quelconque des revendi­cations 4 à 10, pour un transformateur avec deux sorties haute tension, caractérisé par le fait que les extrémités des conducteurs d'une résistance dite "bleeder" (14) sont enfoncées chacune dans une pastille conductrice de cheminée correspondante, à l'intérieur de l'enveloppe protectrice du transformateur.11. Connection device according to any one of claims 4 to 10, for a transformer with two high voltage outputs, characterized in that the ends of the conductors of a resistor called "bleeder" (14) are each inserted in a corresponding chimney conducting tablet, inside the protective envelope of the transformer.
EP86402729A 1985-12-13 1986-12-09 High-voltage transformer Expired - Lifetime EP0236642B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8518521 1985-12-13
FR8518521A FR2591794B1 (en) 1985-12-13 1985-12-13 HIGH VOLTAGE TRANSFORMER WITHOUT HIGH VOLTAGE OUTPUT CABLES AND WITH REMOVABLE POTENTIOMETRIC BLOCK, PARTICULARLY FOR A TRICHROME CATHODE RAY TUBE

Publications (3)

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EP0236642A1 true EP0236642A1 (en) 1987-09-16
EP0236642B1 EP0236642B1 (en) 1993-06-16
EP0236642B2 EP0236642B2 (en) 1998-01-21

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EP86402729A Expired - Lifetime EP0236642B2 (en) 1985-12-13 1986-12-09 High-voltage transformer

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US (1) US4810899A (en)
EP (1) EP0236642B2 (en)
JP (1) JPH0754775B2 (en)
DE (1) DE3688596T3 (en)
ES (1) ES2041244T5 (en)
FR (1) FR2591794B1 (en)
HK (1) HK26195A (en)
WO (1) WO1987003737A1 (en)

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EP0324084A2 (en) * 1988-01-11 1989-07-19 Nokia (Deutschland) GmbH High-voltage transformer for television sets
DE4105076A1 (en) * 1991-02-19 1992-08-20 Phoenix Elekt Electric connection terminal for recess in transformer housing - provides double connection esp. on secondary side to phase and neutral conductors for stress relief purposes
EP0596261A2 (en) * 1992-11-03 1994-05-11 GRUNDIG E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig GmbH & Co. KG Diode-split line transformer
EP0676778A1 (en) * 1994-04-09 1995-10-11 NOKIA TECHNOLOGY GmbH High-voltage transformer
EP0721239B1 (en) * 1995-01-05 2000-05-24 Thomson Television Components France Manufacturing process for an electrical cable connector, electrical cable and high-voltage transformer provided with such cables

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CN103247953B (en) * 2013-05-22 2016-06-15 国家电网公司 Special tool for sleeve lead-out line
US10033169B2 (en) * 2015-05-26 2018-07-24 Mitsubishi Electric Corporation Electric device and method for manufacturing electric device
CN109887727B (en) * 2019-03-31 2020-11-03 江苏环东电气有限公司 Experimental miniature transformer with winding joint control auxiliary connection

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EP0721239B1 (en) * 1995-01-05 2000-05-24 Thomson Television Components France Manufacturing process for an electrical cable connector, electrical cable and high-voltage transformer provided with such cables

Also Published As

Publication number Publication date
FR2591794A1 (en) 1987-06-19
DE3688596T3 (en) 1998-08-06
FR2591794B1 (en) 1989-01-13
WO1987003737A1 (en) 1987-06-18
US4810899A (en) 1989-03-07
HK26195A (en) 1995-03-10
ES2041244T5 (en) 1998-04-01
JPS63502234A (en) 1988-08-25
ES2041244T3 (en) 1993-11-16
EP0236642B1 (en) 1993-06-16
DE3688596D1 (en) 1993-07-22
DE3688596T2 (en) 1993-12-02
EP0236642B2 (en) 1998-01-21
JPH0754775B2 (en) 1995-06-07

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