EP0644614A1 - Process for obtaining an electric connection with a conductive single faced thin strip and the connection itself - Google Patents

Process for obtaining an electric connection with a conductive single faced thin strip and the connection itself Download PDF

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Publication number
EP0644614A1
EP0644614A1 EP94114424A EP94114424A EP0644614A1 EP 0644614 A1 EP0644614 A1 EP 0644614A1 EP 94114424 A EP94114424 A EP 94114424A EP 94114424 A EP94114424 A EP 94114424A EP 0644614 A1 EP0644614 A1 EP 0644614A1
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EP
European Patent Office
Prior art keywords
conductive
strip
cylinder
face
tongue
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
EP94114424A
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German (de)
French (fr)
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EP0644614B1 (en
Inventor
Erik Jan Frenkel
Jean-Jacques Born
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Asulab AG
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Asulab AG
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Publication date
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Publication of EP0644614A1 publication Critical patent/EP0644614A1/en
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Publication of EP0644614B1 publication Critical patent/EP0644614B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2442—Contacts for co-operating by abutting resilient; resiliently-mounted with a single cantilevered beam
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
    • H01R13/035—Plated dielectric material
    • 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
    • Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
    • 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
    • Y10T29/49181—Assembling terminal to elongated conductor by deforming

Definitions

  • the present invention relates generally to a method for making an electrical connection between a thin single-sided conductive plastic strip and a second conductor positioned on the non-conductive side of the strip.
  • the invention also relates to the connection thus obtained.
  • the invention relates more particularly to a method for establishing such an electrical connection when contact with a second conductor is to be made, due to the particular configuration of the device incorporating said connection, by simple pressing on a portion of the plastic strip. thin, on the side of its non-conductive face.
  • An electrical connection according to the invention is for example obtained with a second conductor constituted by an elastic metal strip.
  • Thin single-sided conductive plastic tapes are increasingly used in devices with a short lifespan, either as such, or as an end part intended to ensure electrical contact with a thin conductive plastic film of larger surface area. , but of the same nature. These strips or films indeed have certain advantages, in particular at the cost price, compared to metallic conductors of the same dimensions. By an appropriate choice of plastic material, it is indeed possible to obtain a support having mechanical strength, and in particular satisfactory rigidity and flexibility while having a very small thickness.
  • a film of polyamide for example Capra® available from Allied Chemical
  • PET for example Hostaphon® available from Hoechst
  • the application of the conductive coating can be carried out according to known methods, such as screen printing or sputtering, and makes it possible to obtain conductive layers of the order of a micron. It is then possible to use, for the conductive material, noble metals, such as gold, silver, platinum or palladium, without this significantly influencing the final cost price.
  • This choice of a noble metal can indeed be made necessary by the particular purpose of the film of larger area, extended by the strip used to establish a connection. This is for example the case when the film of larger surface constitutes an electrode intended to come into contact with the skin, for example in a transdermal drug delivery device by ontophoresis or electrophoresis.
  • the film of larger surface constitutes an electrode intended to come into contact with the skin, for example in a transdermal drug delivery device by ontophoresis or electrophoresis.
  • Such single-sided conductive plastic bands or films are ill-suited to pronounced mechanical deformations, such as sharp angle bending, without running the risk. damage the conductive coating.
  • the present invention therefore relates to a method for deforming a thin plastic strip, having a conductive coating on one side to establish a contact area on the side having no conductive coating, without risk of rupture of the conductive layer.
  • the single-sided thin conductive plastic strip is chosen from a thermoformable material, such as the previously mentioned materials (polyamide or PET), and a loop is formed by pinching a tab, constituted by the terminal part of the strip, between two parallel cylinders positioned respectively on the conductive face and on the non-conductive face, at least one cylinder being heated, and the two cylinders being driven in rotation until the cylinder pressing on the conductive face comes to press the non-conductive face of the tab on a non-conductive portion of the strip.
  • a thermoformable material such as the previously mentioned materials (polyamide or PET)
  • the cylinder applied on the side of the conductive face of the strip will preferably be chosen with a diameter less than that of the cylinder applied on the side. of the non-conductive face.
  • the cylinder applied on the side of the non-conductive face is kept fixed, while the second cylinder is rolled on the first until it comes to press the two portions against each other.
  • non-conductive of the strip the movement of the pinch line on the surface of the conductive coating avoids local overheating and thereby possible deterioration of said coating. It is however possible, depending on the nature of the plastic support coating, the nature of the conductive coating and their respective thicknesses, to keep the pinch line fixed and to roll the cylinder located on the non-conductive face by driving the second cylinder until the two portions of non-conductive faces come into contact.
  • the two cylinders are removed, and the contact thus formed can be used such that in a connection where a second metallic conductor comes to bear on the conductive portion of the end of the strip. It is also possible to hold the non-conductive portions more firmly pressed against each other by interposing a point of glue between said portions.
  • one end of the strip 1 formed by the extension of a larger surface 2 is kept pinched along a contact line 9 between two parallel cylinders 10 and 11 positioned respectively on the side from the non-conductive face 3 and from the side of the conductive face 5 of the strip 1, leaving free a portion of strip forming a tongue 7.
  • the cylinder 11 applied to the conductive face 5 has a diameter less than cylinder 10 applied to the non-conductive face 3.
  • FIGS. 2a to 2d schematically represent various phases of the process in which the cylinder 11 positioned on the conductive face 5 rolls on the cylinder 10.
  • the cylinders 10 and 11 are positioned on the strip of such that their contact line 9 is at a distance from the end 4 of the tongue 7 greater than the circumference of the cylinder 10.
  • FIG. 2b represents a phase of the process in which the cylinder 11 has traversed half the circumference of the cylinder 10.
  • FIG. 2c the cylinder 11 has traversed an additional quarter of a circumference and the end 4 of the tongue comes to bear on the non-conductive face 3 of the strip 1.
  • the cylinder 11 completely presses a portion of the tongue 7 on the strip 1 by imparting to the strip a line of inflection along the contact line 9, thus creating a prestress after removal of the two cylinders at the end of the process.
  • the previous result by keeping the cylinders 10 and 11 fixed relative to each other, that is to say by always keeping the contact line in the same place. 9 on the strip, and rolling the cylinder 10 on the non-conductive face.
  • the tongue 7 may have a length less than that of the previous example.
  • FIG. 3 shows in section an example of connection obtained between a thin single-sided conductive strip shaped according to the method of the invention and a conductor constituted by an elastic metal strip 15 in the form of a hook.
  • the metal blade 15 constitutes, for example, a contact of a measuring device contained in a rigid case 17.
  • the strip 1, the end portion of which is shaped according to the method of the invention, constitutes, for example, the contact of an electrode extending by a larger surface 2 said strip 1, these two parts being cut from the same single-sided conductive plastic film, and being held in a frame 19 by suitable means for bringing the end of the metal strip 15 into contact with the conductive face 5 of the terminal portion of the tongue 7.
  • the frame 19 represents for example the element intended to receive a medicament in the device for transdermal administration by iontophoresis or electrophoresis, said element being intended to be discarded as soon as the medicament reserve is exhausted.

Abstract

Process for manufacturing an electrical connection device, and the connection device thus obtained, this being for connecting a plastic strip (1) having a conductive coating on only one face (5) to a second conductor (15) positioned on the non-conductive side (3) of the said strip, consisting in shaping the terminal blade (7) constituted by the terminal part of the said strip into a loop by thermoforming between two parallel rolls, at least one of which is heated, these rolls being rotationally driven in order to press the non-conductive face of the terminal blade (7) against a non-conductive portion of the strip. Application of the connection device thus obtained for the electrical supply of disposable devices. <IMAGE>

Description

La présente invention concerne de façon générale un procédé permettant de réaliser une connexion électrique entre une bande plastique mince conductrice monoface et un deuxième conducteur positionné du côté non conducteur de la bande. L'invention concerne aussi la connexion ainsi obtenue.The present invention relates generally to a method for making an electrical connection between a thin single-sided conductive plastic strip and a second conductor positioned on the non-conductive side of the strip. The invention also relates to the connection thus obtained.

L'invention concerne plus particulièrement un procédé permettant d'établir une telle connexion électrique lorsque le contact avec un deuxième conducteur doit s'effectuer, en raison de la configuration particulière du dispositif incorporant ladite connexion, par simple appui sur une portion de la bande plastique mince, du côté de sa face non conductrice. Une connexion électrique selon l'invention est par exemple obtenue avec un deuxième conducteur constitué par une lame métallique élastique.The invention relates more particularly to a method for establishing such an electrical connection when contact with a second conductor is to be made, due to the particular configuration of the device incorporating said connection, by simple pressing on a portion of the plastic strip. thin, on the side of its non-conductive face. An electrical connection according to the invention is for example obtained with a second conductor constituted by an elastic metal strip.

Les bandes plastiques minces conductrices monofaces sont de plus en plus utilisées dans des dispositifs ayant une courte durée de vie, soit en tant que telles, soit en tant que partie terminale destinée à assurer un contact électrique avec un film plastique mince conducteur de plus grande surface, mais de même nature. Ces bandes ou films présentent en effet des avantages certains, notamment au niveau du prix de revient, par rapport à des conducteurs métalliques de mêmes dimensions. Par un choix approprié du matériau plastique, il est en effet possible d'obtenir un support présentant une résistance mécanique, et particulièrement une rigidité et une flexibilité satisfaisante tout en ayant une très faible épaisseur. En utilisant un film de polyamide (par exemple Capra® disponible chez Allied Chemical) ou de polyéthylène téréphtalate, PET (par exemple Hostaphon® disponible chez Hoechst) on peut disposer de bandes ayant une épaisseur de l'ordre de 0,1 à 0,2 mm tout en ayant une rigidité se rapprochant de celle d'une bande de métal de même épaisseur. L'application du revêtement conducteur peut être effectuée selon des procédés connus, tels que la sérigraphie ou la pulvérisation cathodique, et permet d'obtenir des couches conductrices de l'ordre du micron. Il est alors possible d'utiliser, pour le matériau conducteur des métaux nobles, tels que l'or, l'argent, le platine ou le palladium, sans que cela influence notablement le prix de revient final. Ce choix d'un métal noble peut en effet être rendu nécessaire par finalité particulière du film de plus grande surface, prolongé par la bande utilisée pour établir une connexion. Il en est par exemple ainsi lorsque le film de plus grande surface constitue une électrode destinée à venir en contact avec la peau, par exemple dans un dispositif d'administration transdermique de médicament par l'ontophorèse ou électrophorèse. Toutefois, malgré les avantages précités et compte tenu précisément de la très faible épaisseur de la couche conductrice, de tels bandes ou films plastiques conducteurs monofaces se prêtent mal à des déformations mécaniques prononcées, tel qu'un pliage à angle vif, sans courir le risque d'endommager le revêtement conducteur.Thin single-sided conductive plastic tapes are increasingly used in devices with a short lifespan, either as such, or as an end part intended to ensure electrical contact with a thin conductive plastic film of larger surface area. , but of the same nature. These strips or films indeed have certain advantages, in particular at the cost price, compared to metallic conductors of the same dimensions. By an appropriate choice of plastic material, it is indeed possible to obtain a support having mechanical strength, and in particular satisfactory rigidity and flexibility while having a very small thickness. Using a film of polyamide (for example Capra® available from Allied Chemical) or of polyethylene terephthalate, PET (for example Hostaphon® available from Hoechst) it is possible to have strips having a thickness of on the order of 0.1 to 0.2 mm while having a rigidity approaching that of a metal strip of the same thickness. The application of the conductive coating can be carried out according to known methods, such as screen printing or sputtering, and makes it possible to obtain conductive layers of the order of a micron. It is then possible to use, for the conductive material, noble metals, such as gold, silver, platinum or palladium, without this significantly influencing the final cost price. This choice of a noble metal can indeed be made necessary by the particular purpose of the film of larger area, extended by the strip used to establish a connection. This is for example the case when the film of larger surface constitutes an electrode intended to come into contact with the skin, for example in a transdermal drug delivery device by ontophoresis or electrophoresis. However, despite the aforementioned advantages and taking precisely into account the very small thickness of the conductive layer, such single-sided conductive plastic bands or films are ill-suited to pronounced mechanical deformations, such as sharp angle bending, without running the risk. damage the conductive coating.

La présente invention a donc pour objet un procédé permettant de déformer une bande plastique mince, ayant un revêtement conducteur sur une seule face pour établir une zone de contact du côté n'ayant pas de revêtement conducteur, sans risque de rupture de la couche conductrice.The present invention therefore relates to a method for deforming a thin plastic strip, having a conductive coating on one side to establish a contact area on the side having no conductive coating, without risk of rupture of the conductive layer.

A cet effet, la bande plastique mince conductrice monoface est choisie en un matériau thermoformable, tels que les matériaux précédemment mentionnés (polyamide ou PET), et on forme une boucle en pinçant une languette, constituée par la partie terminale de la bande, entre deux cylindres parallèles positionnés respectivement sur la face conductrice et sur la face non conductrice, un cylindre au moins étant chauffé, et les deux cylindres étant entraînés en rotation jusqu'à ce que le cylindre en appui sur la face conductrice vienne plaquer la face non conductrice de la languette sur une portion non conductrice de la bande.For this purpose, the single-sided thin conductive plastic strip is chosen from a thermoformable material, such as the previously mentioned materials (polyamide or PET), and a loop is formed by pinching a tab, constituted by the terminal part of the strip, between two parallel cylinders positioned respectively on the conductive face and on the non-conductive face, at least one cylinder being heated, and the two cylinders being driven in rotation until the cylinder pressing on the conductive face comes to press the non-conductive face of the tab on a non-conductive portion of the strip.

De façon à réaliser une précontrainte qui maintienne plaquées l'une contre l'autre les portions non conductrices en regard, le cylindre appliqué du côté de la face conductrice de la bande sera choisi de préférence avec un diamètre inférieur à celui du cylindre appliqué du côté de la face non conductrice. Dans ce mode d'exécution du procédé, il est possible de ne chauffer que le cylindre situé du côté de la face non conductrice en ayant l'avantage de ne mettre le revêtement conducteur en contact qu'avec une paroi à température sensiblement ambiante, ce qui diminue les risques de détérioration dudit revêtement conducteur par migration dans la couche plastique, ou inversement par migration de la couche plastique à la surface du revêtement conducteur. Pour effectuer cet enroulement, le cylindre appliqué du côté de la face non conductrice est maintenu fixe, alors qu'on fait rouler le deuxième cylindre sur le premier jusqu'à ce qu'il vienne plaquer l'une contre l'autre les deux portions non conductrices de la bande : le déplacement de la ligne de pincement à la surface du revêtement conducteur évite une surchauffe locale et par là même une éventuelle détérioration dudit revêtement. Il est toutefois possible, en fonction de la nature du revêtement plastique support, de la nature du revêtement conducteur et de leurs épaisseurs respectives, de maintenir fixe la ligne de pincement et de faire rouler le cylindre situé sur la face non conductrice en entraînant le deuxième cylindre jusqu'à ce que les deux portions de faces non conductrices viennent en contact. Lorsque l'opération d'enroulement est terminée, les deux cylindres sont retirés, et le contact ainsi formé peut être utilisé tel que dans une connexion où un deuxième conducteur métallique vient en appui sur la portion conductrice de l'extrémité de la bande. Il est également possible de maintenir plus fermement plaquées l'une contre l'autre les portions non conductrices en interposant un point de colle entre lesdites portions.In order to achieve a prestress which keeps the nonconductive portions facing one another pressed against each other, the cylinder applied on the side of the conductive face of the strip will preferably be chosen with a diameter less than that of the cylinder applied on the side. of the non-conductive face. In this embodiment of the method, it is possible to heat only the cylinder situated on the side of the non-conductive face, having the advantage of bringing the conductive coating into contact only with a wall at substantially ambient temperature, this which reduces the risk of deterioration of said conductive coating by migration into the plastic layer, or vice versa by migration of the plastic layer on the surface of the conductive coating. To carry out this winding, the cylinder applied on the side of the non-conductive face is kept fixed, while the second cylinder is rolled on the first until it comes to press the two portions against each other. non-conductive of the strip: the movement of the pinch line on the surface of the conductive coating avoids local overheating and thereby possible deterioration of said coating. It is however possible, depending on the nature of the plastic support coating, the nature of the conductive coating and their respective thicknesses, to keep the pinch line fixed and to roll the cylinder located on the non-conductive face by driving the second cylinder until the two portions of non-conductive faces come into contact. When the winding operation is finished, the two cylinders are removed, and the contact thus formed can be used such that in a connection where a second metallic conductor comes to bear on the conductive portion of the end of the strip. It is also possible to hold the non-conductive portions more firmly pressed against each other by interposing a point of glue between said portions.

Un exemple de l'invention va maintenant être décrit en détail, en référence aux dessins qui l'accompagnent, dans lesquels :

  • la figure 1 représente une vue en perspective d'une phase du procédé selon l'invention;
  • les figures 2a à 2d représentent schématiquement des phases successives du procédé selon l'invention, et
  • la figure 3 représente une vue en coupe d'un exemple de connexion électrique selon l'invention.
An example of the invention will now be described in detail, with reference to the accompanying drawings, in which:
  • FIG. 1 represents a perspective view of a phase of the method according to the invention;
  • FIGS. 2a to 2d schematically represent successive phases of the method according to the invention, and
  • FIG. 3 represents a sectional view of an example of an electrical connection according to the invention.

Comme représenté à la figure 1 dans une phase intermédiaire du procédé, une extrémité de la bande 1 constituée par le prolongement d'une plus grande surface 2 est maintenue pincée selon une ligne de contact 9 entre deux cylindres parallèles 10 et 11 positionnés respectivement du côté de la face non conductrice 3 et du côté de la face conductrice 5 de la bande 1 en laissant libre une portion de bande formant une languette 7. Dans le mode de réalisation représenté le cylindre 11 appliqué sur la face conductrice 5 a un diamètre inférieur au cylindre 10 appliqué sur la face non conductrice 3.As shown in FIG. 1 in an intermediate phase of the process, one end of the strip 1 formed by the extension of a larger surface 2 is kept pinched along a contact line 9 between two parallel cylinders 10 and 11 positioned respectively on the side from the non-conductive face 3 and from the side of the conductive face 5 of the strip 1, leaving free a portion of strip forming a tongue 7. In the embodiment shown, the cylinder 11 applied to the conductive face 5 has a diameter less than cylinder 10 applied to the non-conductive face 3.

Les figures 2a à 2d représentent schématiquement divers phases du procédé dans lesquelles le cylindre 11 positionné sur la face conductrice 5 roule sur le cylindre 10. Au début du procédé, représenté à la figure 2a, les cylindres 10 et 11 sont positionnés sur la bande de telle sorte que leur ligne de contact 9 soit à une distance de l'extrémité 4 de la languette 7 supérieure à la circonférence du cylindre 10. La figure 2b représente une phase du procédé dans laquelle le cylindre 11 a parcouru la moitié de la circonférence du cylindre 10. A la figure 2c, le cylindre 11 a parcouru un quart de circonférence supplémentaire et l'extrémité 4 de la languette vient en appui sur la face 3 non conductrice de la bande 1. Dans la dernière phase représentée à 1a figure 2d, le cylindre 11 vient totalement plaquer une portion de la languette 7 sur la bande 1 en imprimant à la bande une ligne d'inflexion le long de la ligne de contact 9, créant ainsi une précontrainte après le retrait des deux cylindres en fin de procédé. Dans la phase du procédé représentée à la figure 2b, il est en outre possible d'ajouter un point de colle sur la face 3, à proximité du cylindre 10, afin de maintenir plus fermement plaquées l'une contre l'autre les deux portions de face non conductrice.FIGS. 2a to 2d schematically represent various phases of the process in which the cylinder 11 positioned on the conductive face 5 rolls on the cylinder 10. At the start of the process, represented in FIG. 2a, the cylinders 10 and 11 are positioned on the strip of such that their contact line 9 is at a distance from the end 4 of the tongue 7 greater than the circumference of the cylinder 10. FIG. 2b represents a phase of the process in which the cylinder 11 has traversed half the circumference of the cylinder 10. In FIG. 2c, the cylinder 11 has traversed an additional quarter of a circumference and the end 4 of the tongue comes to bear on the non-conductive face 3 of the strip 1. In the last phase shown in FIG. 2d, the cylinder 11 completely presses a portion of the tongue 7 on the strip 1 by imparting to the strip a line of inflection along the contact line 9, thus creating a prestress after removal of the two cylinders at the end of the process. In the process phase represented in FIG. 2b, it is also possible to add a point of glue on the face 3, near the cylinder 10, in order to keep the two portions more firmly pressed against each other. non-conductive face.

Selon une variante, il est également possible d'obtenir le résultat précédent en maintenant les cylindres 10 et 11 fixes l'un par rapport à l'autre, c'est-à-dire en maintenant toujours à la même place la ligne de contact 9 sur la bande, et en faisant rouler le cylindre 10 sur la face non conductrice. En pareil cas, la languette 7 pourra avoir une longueur inférieure à celle de l'exemple précédent.According to a variant, it is also possible to obtain the previous result by keeping the cylinders 10 and 11 fixed relative to each other, that is to say by always keeping the contact line in the same place. 9 on the strip, and rolling the cylinder 10 on the non-conductive face. In such a case, the tongue 7 may have a length less than that of the previous example.

La figure 3 représente en coupe un exemple de connexion obtenue entre une bande mince conductrice monoface conformée selon le procédé de l'invention et un conducteur constitué par une lame métallique 15 élastique en forme de crochet. La lame métallique 15 constitue par exemple un contact d'un appareil de mesure contenu dans un boîtier rigide 17. La bande 1, dont la partie terminale est conformée selon le procédé de l'invention, constitue par exemple le contact d'une électrode prolongeant par une plus grande surface 2 ladite bande 1, ces deux parties étant découpées dans un même film plastique conducteur monoface, et étant maintenues dans un bâti 19 par des moyens appropriés pour mettre en contact l'extrémité de la lame métallique 15 et la face conductrice 5 de la portion terminale de la languette 7. Le bâti 19 représente par exemple l'élément destiné à recevoir un médicament dans le dispositif d'administration transdermique par iontophorèse ou électrophorèse, ledit élément étant destiné à être jeté dès que la réserve de médicament est épuisée.FIG. 3 shows in section an example of connection obtained between a thin single-sided conductive strip shaped according to the method of the invention and a conductor constituted by an elastic metal strip 15 in the form of a hook. The metal blade 15 constitutes, for example, a contact of a measuring device contained in a rigid case 17. The strip 1, the end portion of which is shaped according to the method of the invention, constitutes, for example, the contact of an electrode extending by a larger surface 2 said strip 1, these two parts being cut from the same single-sided conductive plastic film, and being held in a frame 19 by suitable means for bringing the end of the metal strip 15 into contact with the conductive face 5 of the terminal portion of the tongue 7. The frame 19 represents for example the element intended to receive a medicament in the device for transdermal administration by iontophoresis or electrophoresis, said element being intended to be discarded as soon as the medicament reserve is exhausted.

Sans sortir du cadre de l'invention, l'homme de l'art est en mesure d'adapter le procédé à un besoin particulier, et d'appliquer la connexion à un grand nombre de dispositifs, en particulier dans ceux où il est nécessaire d'assurer une connexion électrique entre un élément coûteux et un élément destiné à être jeté, et devant donc être bon marché.Without departing from the scope of the invention, those skilled in the art are able to adapt the method to a particular need, and to apply the connection to a large number of devices, in particular in those where it is necessary. to ensure an electrical connection between an expensive element and an element intended to be discarded, and which must therefore be inexpensive.

Claims (7)

Procédé de fabrication d'une connexion électrique entre une bande en matière plastique mince (1) ayant un revêtement conducteur sur une seul face (5) et un deuxième conducteur (15) positionné du côté non conducteur (3) de ladite bande, caractérisé en ce que la matière plastique utilisée est thermoformable et en ce qu'une languette (7) constituée par la partie terminale de la bande est enroulée en étant pincée entre deux cylindres parallèles (10, 11) positionnés respectivement sur la face conductrice (5) et sur la face non conductrice (3), un cylindre au moins étant chauffé, et les deux cylindres étant entraînés en rotation jusqu'à ce que le cylindre (11) en appui sur la face conductrice (5) vienne plaquer la face non conductrice (3) de la languette (7) sur une portion non conductrice de la bande (1).Method of manufacturing an electrical connection between a thin plastic strip (1) having a conductive coating on one side (5) and a second conductor (15) positioned on the non-conductive side (3) of said strip, characterized in that the plastic used is thermoformable and in that a tongue (7) constituted by the end portion of the strip is wound by being pinched between two parallel cylinders (10, 11) positioned respectively on the conductive face (5) and on the non-conductive face (3), at least one cylinder being heated, and the two cylinders being driven in rotation until the cylinder (11) bearing on the conductive face (5) comes to press the non-conductive face ( 3) of the tongue (7) on a non-conductive portion of the strip (1). Procédé selon la revendication 1, caractérisé en ce que le cylindre (11) appliqué sur la face conductrice de la bande à un diamètre inférieur à celui du cylindre (10) appliqué sur la face non conductrice de la bande.Method according to claim 1, characterized in that the cylinder (11) applied to the conductive face of the strip has a diameter smaller than that of the cylinder (10) applied to the non-conductive face of the strip. Procédé selon la revendication 1, caractérisé en ce que l'enroulement de la languette (7) est effectué en maintenant le cylindre (10) positionné sur la face non conductrice (3) et en faisant rouler l'autre cylindre (11) sur la face conductrice (5).Method according to claim 1, characterized in that the winding of the tongue (7) is carried out by maintaining the cylinder (10) positioned on the non-conductive face (3) and by rolling the other cylinder (11) on the conductive face (5). Procédé selon la revendication 1, caractérisé en ce que l'enroulement de la languette (7) est effectué en maintenant fixe les deux cylindres (10, 11) l'un par rapport à l'autre et en faisant rouler sur la face non conductrice (3) de la bande le cylindre (10) positionné sur ladite face en entraînant l'autre cylindre (11).Method according to claim 1, characterized in that the winding of the tongue (7) is carried out by holding the two cylinders (10, 11) fixed relative to one another and by rolling on the non-conductive face (3) tape the cylinder (10) positioned on said face by driving the other cylinder (11). Procédé selon la revendication 1, caractérisé en ce qu'un point de colle est en outre ajouté entre les surfaces non conductrices en regard de la languette (7) et la bande (1).Method according to claim 1, characterized in that a point of glue is additionally added between the non-conductive surfaces opposite the tongue (7) and the strip (1). Procédé selon la revendication 1, caractérisé en ce que seul le cylindre (10) positionné sur la face non conductrice (3) est chauffé.Method according to claim 1, characterized in that only the cylinder (10) positioned on the non-conductive face (3) is heated. Connexion électrique entre une bande plastique mince (1) ayant un revêtement conducteur sur une seule face (5) et un deuxième conducteur (15) positionné du côté non conducteur (3) de ladite bande (1), caractérisé en ce qu'une languette (7) constituée par la partie terminale de ladite bande (1) est conformée en une boucle par thermoformage, de sorte que la face non conductrice de l'extrémité de ladite languette vienne se plaquer sur une portion non conductrice (3) de la bande (1).Electrical connection between a thin plastic strip (1) having a conductive coating on one side (5) and a second conductor (15) positioned on the non-conductive side (3) of said strip (1), characterized in that a tongue (7) constituted by the end portion of said strip (1) is shaped into a loop by thermoforming, so that the non-conductive face of the end of said tab comes to rest on a non-conductive portion (3) of the strip (1).
EP94114424A 1993-09-21 1994-09-14 Process for obtaining an electric connection with a conductive single faced thin strip and the connection itself Expired - Lifetime EP0644614B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9311315 1993-09-21
FR9311315A FR2710460B1 (en) 1993-09-21 1993-09-21 Method of obtaining an electrical connection with a thin single-sided conductive strip and connection thus obtained.

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EP0644614A1 true EP0644614A1 (en) 1995-03-22
EP0644614B1 EP0644614B1 (en) 1999-01-13

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EP94114424A Expired - Lifetime EP0644614B1 (en) 1993-09-21 1994-09-14 Process for obtaining an electric connection with a conductive single faced thin strip and the connection itself

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US (1) US5594986A (en)
EP (1) EP0644614B1 (en)
JP (1) JP2657045B2 (en)
DE (1) DE69415905T2 (en)
FR (1) FR2710460B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9511326D0 (en) * 1995-06-05 1995-08-02 Welwyn Lighting Designs Ltd Method of manufacturing lampshades and apparatus for performing the method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3032739A (en) * 1957-01-23 1962-05-01 Tuchel Ulrich Contact assembly
US4870969A (en) * 1988-09-16 1989-10-03 Somatics, Inc. Electrode application system and method for electroconvulsive therapy
US5131854A (en) * 1991-05-30 1992-07-21 Rick Jose Electrical connector for attaching an electrode to a patient in a medical procedure

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS503669A (en) * 1973-05-14 1975-01-16
US4266339A (en) * 1979-06-07 1981-05-12 Dielectric Systems International, Inc. Method for making rolling electrode for electrostatic device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3032739A (en) * 1957-01-23 1962-05-01 Tuchel Ulrich Contact assembly
US4870969A (en) * 1988-09-16 1989-10-03 Somatics, Inc. Electrode application system and method for electroconvulsive therapy
US5131854A (en) * 1991-05-30 1992-07-21 Rick Jose Electrical connector for attaching an electrode to a patient in a medical procedure

Also Published As

Publication number Publication date
DE69415905D1 (en) 1999-02-25
DE69415905T2 (en) 1999-08-19
JP2657045B2 (en) 1997-09-24
US5594986A (en) 1997-01-21
EP0644614B1 (en) 1999-01-13
JPH07169547A (en) 1995-07-04
FR2710460A1 (en) 1995-03-31
FR2710460B1 (en) 1995-11-17

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