EP1085553B1 - Process for manufacturing fuse holder modules in series and fuse holder modules made by this process - Google Patents

Process for manufacturing fuse holder modules in series and fuse holder modules made by this process Download PDF

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Publication number
EP1085553B1
EP1085553B1 EP00402490A EP00402490A EP1085553B1 EP 1085553 B1 EP1085553 B1 EP 1085553B1 EP 00402490 A EP00402490 A EP 00402490A EP 00402490 A EP00402490 A EP 00402490A EP 1085553 B1 EP1085553 B1 EP 1085553B1
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EP
European Patent Office
Prior art keywords
supports
strip
fuse
process according
modules
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00402490A
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German (de)
French (fr)
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EP1085553A1 (en
Inventor
Hugues Vachon
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Tyco Electronics France SAS
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Tyco Electronics France SAS
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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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/20—Bases for supporting the fuse; Separate parts thereof
    • H01H85/203—Bases for supporting the fuse; Separate parts thereof for fuses with blade type terminals
    • H01H85/2035—Bases for supporting the fuse; Separate parts thereof for fuses with blade type terminals for miniature fuses with parallel side contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0056—Apparatus or processes specially adapted for the manufacture of electric switches comprising a successive blank-stamping, insert-moulding and severing operation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/20—Bases for supporting the fuse; Separate parts thereof
    • H01H2085/2085—Holders for mounting a fuse on a printed circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
    • H01R43/24—Assembling by moulding on contact members

Definitions

  • the present invention relates to a method of series manufacture of fuse holder modules, as well as fuse module modules.
  • the invention applies generally in all cases where one or more fuses must be installed on a printed circuit board.
  • the invention is applicable more particularly, but not exclusively, to mini-fuses used in the field of the automotive industry and intended to be installed on an electronic card, for example on an electronic card of a computer embedded in a motor vehicle or on a printed circuit of power called PCB circuit, having conductive tracks and metallized holes.
  • a first known technique for installing the fuse or fuses on a printed circuit board is to provide, for each fuse, two contacts which are located in holes of the printed circuit and welded in their respective holes. The assembly is then placed in a plastic envelope having means for guiding the fuse (s) to be installed on the printed circuit board. The fuse or fuses are installed on said card after welding on the latter or contacts for receiving the fuses.
  • Such a known technique requires a relatively large number of operations (setting up each of the contacts, welding them on the printed circuit board and connecting each of the fuses in the associated contacts), operations that are not always easy to automate. In addition, this technique prohibits the mounting of fuses as SMD components (surface mount components).
  • Another known technique consists in forcing the contacts into respective housings of a plastic housing, such that the connection pins respectively associated with the contacts protrude from one face of the housing. Then, the case is presented in front of the printed circuit board and the protruding pins of the contacts are inserted in the metallized holes of the printed circuit board and welded to said holes for example by wave soldering. The fuses can be plugged into the housing contacts before or after the welding operation of the connection pins in the plated holes of the printed circuit board.
  • this known technique comprises a relatively large number of operations (insertion of each contact in its respective housing housing, connection of each fuse, etc.) and it prohibits the mounting of the housing as CMS component.
  • a large power track occupies a lot of space on a printed circuit board, to the detriment of other conductive tracks, whose paths could be simpler and shorter, and to the detriment of the total dimensions of the card. circuit board which, without it, could be reduced.
  • the present invention therefore aims to overcome the disadvantages of the prior art described above.
  • the invention also provides a fuse module and a strip of fuse modules obtained by the method having one or more of the features indicated above.
  • the invention also provides a strip of fuse modules of the type comprising a support of insulating material carrying several pairs of conductive parts, a pair per fuse holder module, each conductive part having a contact part, which is intended for the establishing a detachable electrical and mechanical connection with a fuse connecting lug, and a connecting portion which is intended to establish an electrical connection with a printed circuit board, said pairs of conductive parts being spaced apart along the longitudinal median axis of the bar so that one of the two conductive parts of each pair is on one side of said center line and the other conductive part is on the other side of said axis median, characterized in that the strip contains a shunt element which electrically connects all conductive parts located on one side of said long median axis itudinal.
  • the two conductive parts (contacts) of each fuse holder module are trapped in a support of insulating material. Accordingly, the two conductive parts or contacts of each fuse module, whether individual or they are from a strip of fuse modules, do not need to be inserted individually into holes in a printed circuit board or in a housing of a common housing with several fuses, which already simplifies the operations installing fuses on a printed circuit board.
  • the invention makes it possible to obtain individual fuse holder modules or strips of fuse modules constituting either components to be stitched on a printed circuit board, or CMS components.
  • This offers greater possibilities as to the techniques that can be used for the implantation of fuse modules or fuse module modules on a printed circuit board.
  • the fuse modules may be packaged so as to be usable by automatic component implantation machines on printed circuit boards.
  • the fuses can be easily set up automatically on the fuse modules prior to the segmentation operation of the band. This facilitates the work of the manufacturer of electronic cards.
  • the method according to the invention leads to a strip of fuse holder modules which contains a shunt element electrically connecting all the conductive parts located on the same side of the longitudinal central axis of the metal strip.
  • the conductor which is also the longitudinal median axis of the strip of fuse modules, it is then possible to dispense with a power conducting track on the printed circuit board, or to reduce its length substantially. This also makes it possible to reduce at least one dimension of the printed circuit board and possibly simplify the path of the other conductive tracks, or even to reduce the length of some of them if they had to bypass the power track beforehand to avoid any interference. with her.
  • FIG. 1 it is possible to see a section of a strip 1 (shown in phantom) of conductive metal, for example copper-based, in which a succession of pairs of conductive parts 2 has been cut out and 3 which are spaced along the strip 1.
  • Each conductive part 2 or 3 has a contact portion 2a or 3a and a connection portion 2b or 3b.
  • the contact portions 2a and 3a of each pair of conductive parts 2 and 3 are intended to establish an electrical and mechanical connection detachable respectively with the two connecting lugs of a fuse as will be seen later.
  • the contact portions 2a and 3a are cut into the shape of a flat lyre.
  • Such a flat lyre shape makes it possible to obtain a high clamping pressure for a small displacement, thus a good electrical contact with the connection tabs of the fuse and a strong holding force of said connection tabs between the two branches of each part of contact in the form of a flat lyre.
  • the connection portions 2b and 3b of each pair of conductive parts 2 and 3 are intended to establish an electrical connection with a printed circuit board as will also be seen later.
  • the two conductive parts 2 and 3 of each pair of conductive parts are arranged symmetrically on either side of the longitudinal central axis 4 of the conductive metal strip 1 and they extend transversely to said axis.
  • the connection portions 2b and 3b of the two conductive parts 2 and 3 of each pair extend towards each other towards the longitudinal central axis 4, while the contact portions 2a and 3a of the two conductive parts 2 and 3 of each pair extend in opposite directions, each to a respective longitudinal side of the strip 1.
  • the cutting of the strip 1 is further carried out in such a way that shunting elements 5 are formed in the middle region of the strip 1 between pairs of conductive parts 2, 3.
  • Each shunt element 5 interconnects four conductive parts belonging to two adjacent pairs of conductive parts 2, 3.
  • each shunt element 5 comprises a central portion 5a located on the axis 4, and four oblique strips 5b to 5e, which connect the central portion 5a respectively to four conductive parts 2 and 3 belonging to two adjacent pairs of conductive parts .
  • the central part 5a of each shunt element 5 may have for example a circular or annular shape, with a hole 6 in the middle, all the holes 6 being regularly spaced along the axis 4 and can be used, in a known manner in self, to the training step by step of the band 1.
  • the strip 1 After having been cut as described with reference to FIG. 1, the strip 1 can then be subjected to a treatment against oxidation and rolled up in the form of a cake and temporarily stored while waiting to be subjected to the other operations which will be described below.
  • oxidation treatment process and apparatus for its implementation are well known and do not need to be described.
  • the strip 1 cut and optionally treated against oxidation is then passed successively through a bending station I, an injection molding or insertion station II, a component insertion station III and finally a station IV as in Fig. 2.
  • a station I an injection molding or insertion station II, a component insertion station III and finally a station IV as in Fig. 2.
  • the stations 1 to IV are shown relatively close to each other for the convenience of the drawing, these different stations may actually be at a substantially greater distance from each other. others.
  • the strip 1 is folded in a U around two fold lines parallel to the longitudinal median axis of the strip as shown in FIG. 3.
  • the shunting elements 5 remain in the plane of the strip, while the contact portions 2a and 3a of the conductive parts 2 and 3 stand perpendicular to said plane on one side thereof.
  • the connecting portions 2b and 3b protrude from the other side of said plane, for example perpendicular thereto when the portions 2b and 3b are intended to be planted in metallized holes of a printed circuit board.
  • the station II is an injection molding station in which supports 7 made of an insulating thermoplastic material are molded onto the strip 1.
  • the band 1 in the station II it is formed each time a single support 7 on said strip, the latter then being advanced each time by a pitch corresponding to the pitch of the pairs of conductive parts 2, 3 along band 1.
  • the molding station could be arranged to simultaneously form several supports 7 on the band 1 at each stop thereof in the station II.
  • the strip 1 is each time advanced by a step corresponding to a multiple of the pitch of the conductive parts 2, 3 along the strip 1.
  • the station II is an insertion station, in which the band 1 is inserted in supports which are similar to the supports 7 and which have been previously molded in an insulating thermoplastic material.
  • each pair of conductive parts 2, 3 is partially trapped in the support 7 made of insulating material, so that the two contact parts 2a and 3a and the two connecting parts 2b and 3b of the pair of conductive parts 2, 3 remain exposed and each shunt element 5 remains exposed between two adjacent supports 7, as shown in FIGS. 2, 4 and 6.
  • FIG. 2 then gives a succession of fuse holder modules 8, each of which has their own support 7 and which are connected to each other by the shunt elements 5.
  • the supports 7 can then be also connected to each other by at least one connection 9 of insulating material, coming with the supports 7, as will be seen below with reference to FIGS. 7 to 10.
  • the method according to the invention makes it possible to form strips 10 each comprising a plurality of fuse holder modules 8.
  • two guide walls 11 and 12 can also be formed in one piece with each support 7. As is more particularly visible in FIGS. 5 and 6 and also in the figures 7, 8, 12 and 13, the two guide walls 11 and 12 formed on each support 7 stand perpendicular to the plane of the strip 1 outside the branches of the U formed respectively by the contact portions 2a and 3a of the pair of conductive parts 2, 3 partially embedded in the support 7.
  • the two walls 11 and 12 are intended to serve as a guide for a fuse or mini-fuse 13 of known type, when it is put in place on the fuse holder module 8 in the station III.
  • Each fuse 13 has, in known manner, a body 14 made of an insulating material and of approximately parallelepipedal shape, on one side of which project two flat connecting tabs 15 and 16. Inside the body 14 is embedded a conductive element which is electrically connected to the legs 15 and 16 and is calibrated to melt when traversed by a current having a predetermined intensity.
  • the width of the gap between the two branches of each lyre-shaped contact portion 2a or 3a, where this gap is narrowest, is dimensioned to have a value slightly smaller than the thickness. connection tabs 15 and 16 of the fuse 13.
  • Each of the two guide walls 11 and 12 has, when viewed at the end, that is to say in the direction of insertion of a fuse 13 between them, the shape of a shallow channel U such that the fuse 13 is guided on four sides when it is inserted between the guide walls 11 and 12 of the fuse holder module 8, while allowing the manipulation of the fuse 13 by means of a clamp.
  • another wall 17 may also be formed in one piece with each support 7 so as to stand perpendicular to the plane of the conductive metal strip, between the two contact parts. 2a and 3a of each pair of conductive parts 2, 3, as is more particularly visible in Figure 5 and also in Figures 7, 8, 12 and 13.
  • This wall 17 is intended to serve as a stop to limit the depth of fuse insertion 13 in the fuse holder module 8, as is particularly visible in Figure 5.
  • the strip 1 cut, folded and provided with molded supports 7 for the fuse holder modules 8 is segmented using a suitable cutting tool.
  • the segmentation operation can then consist in completely eliminating by shearing the shunt elements 5
  • Individual fuse holder modules 8 are thus obtained, as shown in FIGS. 12 and 13, each individual fuse holder 8 optionally being lined with a fuse 13 if such a fuse has been inserted during the passage of the door module. -fuse in post III.
  • FIG. 12 it can be seen that the fuse 13 is retained in the fuse holder module 8 by two latching lugs 18 and 19 located on the mutually opposite inner faces of the guide walls 11 and 12 at the upper end. of these. These latching lugs 18 and 19 may be formed in one piece with the walls 11 and 12 during the molding operation in station II.
  • the individual fuse holder modules 8 thus obtained can for example be delivered in bulk, in a blister strip, in a tube, etc., or else they can be glued with a predefined spacing pitch p on a flexible strip 21 covered. of an adhesive layer as shown in Figure 14.
  • the band 21 filled with modules 8 is then wound in the form of a wafer usable in a process of automatic installation of components on a printed circuit board.
  • the segmentation operation can be performed by cutting the two links 9 and the shunt element 5 between two adjacent fuse modules 8, all n fuse modules, n being a predetermined integer. Under these conditions, strips 10 each having n fuse holder modules 8 are obtained, for example three fuse holder modules as shown in FIG. in this case, the number n is equal to three, but it goes without saying that it could be smaller or greater than three.
  • each shunting element 5 is cut only partially, as shown in FIG. 8.
  • the strip 10 obtained after segmentation only the remaining segments remain.
  • the supports 7 of the various fuse holder modules 8 constituting the strip 10 remain interconnected by a part of the shunt elements 5 after segmentation of the strip and cutting of the shunt elements, the links 9 located between the adjacent supports 7 on the same side of the longitudinal median axis as the remaining parts of the shunt elements 5 can be omitted as shown in FIGS. 8 and 11. This not only saves insulating material, but also facilitates the segmentation operation, since there is more than one link 9 to cut between two adjacent fuse modules 8 to detach the strips 10 each other.
  • the embodiment of the strip 10 of fuse modules 8 shown in FIG. 8 is particularly advantageous in the case where the fuses 13 installed on the strip 10 are intended to be electrically connected to the same terminal of a current source. .
  • to connect together all the connection portions 2b of the bar 10 it is no longer necessary to provide a power track on the printed circuit board on which the bar 10 is intended to be mounted, and it just connect one of the connection portions 2b of the bar to the printed circuit.
  • connection parts 2b and 3b conductive parts 2 and 3 extend perpendicular to the plane of the strip 1 as is particularly visible in Figures 3 and 5.
  • the two connecting parts 2b and 3b can be bent as shown in phantom in FIG. 3 for the connection part 2b, so that, after segmentation of the strip, fuse-holder modules 8 are obtained or strips 10 of fuse modules 8 in the form of surface mount electrical components (SMD components).
  • SMD components surface mount electrical components
  • the operation of placing the fuses 13 in the fuse modules 8 (item III) and the segmentation operation of the band 1 (item IV) are not necessarily performed on the same production line as that which performs the folding of the band 1 (station I) and the molding of the supports 7 (station II). Indeed, after the molding operation, the band 1 provided with the supports 7 could be for example wound in the form of a cake and temporarily stored in this form.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Fuses (AREA)

Abstract

Process consists on cutting off from a band pairs of symmetrical conductive elements (2,3) with connecting parts (2b,3b) around the axis and contacting parts (2a,3a) extending externally. Then the assembly is folded (I) in a U-shape with connecting part projecting downwards and contacting parts projecting upwards. Finally plastic insulator (7) is placed (II) around a pair of conductive elements. Independent claims are also included for a fuse carrier and a whole band of fuse carriers obtained by this process.

Description

La présente invention concerne un procédé de fabrication en série de modules porte-fusible, ainsi que des barrettes de modules porte-fusible.The present invention relates to a method of series manufacture of fuse holder modules, as well as fuse module modules.

L'invention s'applique d'une manière générale dans tous les cas où un ou plusieurs fusibles doivent être installés sur une carte à circuit imprimé. L'invention est applicable plus particulièrement, mais non exclusivement, aux mini-fusibles utilisés dans le domaine de l'industrie automobile et destinés à être installés sur une carte électronique, par exemple sur une carte électronique d'un calculateur embarqué dans un véhicule automobile ou encore sur un circuit imprimé de puissance dit circuit PCB, comportant des pistes conductrices et des trous métallisés.The invention applies generally in all cases where one or more fuses must be installed on a printed circuit board. The invention is applicable more particularly, but not exclusively, to mini-fuses used in the field of the automotive industry and intended to be installed on an electronic card, for example on an electronic card of a computer embedded in a motor vehicle or on a printed circuit of power called PCB circuit, having conductive tracks and metallized holes.

Les mini-fusibles doivent être démontables et accessibles aux réparateurs pour pouvoir être facilement remplacés en cas de besoin. Une première technique connue pour installer le ou les fusibles sur une carte à circuit imprimé consiste à prévoir, pour chaque fusible, deux contacts qui sont implantés dans des trous du circuit imprimé et soudés dans leurs trous respectifs. L'ensemble est ensuite placé dans une enveloppe en matière plastique comportant des moyens de guidage du ou des fusibles à installer sur la carte à circuit imprimé. Le ou les fusibles sont installés sur ladite carte après soudage sur cette dernière du ou des contacts destinés à recevoir les fusibles. Une telle technique connue nécessite un nombre d'opérations relativement grand (mise en place de chacun des contacts, soudage de ceux-ci sur la carte à circuit imprimé et branchement de chacun des fusibles dans les contacts y associés), opérations qui ne sont pas toujours facilement automatisables. En outre, cette technique interdit le montage des fusibles en tant que composants CMS (composants à montage en surface).Mini-fuses must be removable and accessible to repairers so that they can be easily replaced if necessary. A first known technique for installing the fuse or fuses on a printed circuit board is to provide, for each fuse, two contacts which are located in holes of the printed circuit and welded in their respective holes. The assembly is then placed in a plastic envelope having means for guiding the fuse (s) to be installed on the printed circuit board. The fuse or fuses are installed on said card after welding on the latter or contacts for receiving the fuses. Such a known technique requires a relatively large number of operations (setting up each of the contacts, welding them on the printed circuit board and connecting each of the fuses in the associated contacts), operations that are not always easy to automate. In addition, this technique prohibits the mounting of fuses as SMD components (surface mount components).

Une autre technique connue consiste à insérer à force les contacts dans des logements respectifs d'un boîtier en matière plastique, de telle façon que les broches de connexion respectivement associées aux contacts fassent saillie sur une face du boîtier. Ensuite, le boîtier est présenté devant la carte à circuit imprimé et les broches saillantes des contacts sont insérées dans les trous métallisés de la carte à circuit imprimé et soudées auxdits trous par exemple par soudage à la vague. Les fusibles peuvent être branchés dans les contacts du boîtier avant ou après l'opération de soudage des broches de connexion dans les trous métallisés de la carte à circuit imprimé.Another known technique consists in forcing the contacts into respective housings of a plastic housing, such that the connection pins respectively associated with the contacts protrude from one face of the housing. Then, the case is presented in front of the printed circuit board and the protruding pins of the contacts are inserted in the metallized holes of the printed circuit board and welded to said holes for example by wave soldering. The fuses can be plugged into the housing contacts before or after the welding operation of the connection pins in the plated holes of the printed circuit board.

Là encore, cette technique connue comporte un nombre d'opérations relativement important (insertion de chaque contact dans son logement respectif du boîtier, branchement de chaque fusible, etc) et elle interdit le montage du boîtier en tant que composant CMS.Again, this known technique comprises a relatively large number of operations (insertion of each contact in its respective housing housing, connection of each fuse, etc.) and it prohibits the mounting of the housing as CMS component.

En outre, dans ces deux techniques connues, lorsque plusieurs fusibles ont une borne reliée électriquement à un même pôle d'une source de tension continue, il faut prévoir sur la carte à circuit imprimé une piste de puissance capable de véhiculer une intensité de courant relativement importante. La piste de puissance doit donc avoir une épaisseur et/ou une largeur de cuivre relativement importante. Or, il n'est ni rationnel ni économique de donner à la couche de cuivre de la plaque à circuit imprimé une épaisseur importante, dans la mesure où les autres pistes conductrices du circuit imprimé transportent usuellement des intensités de courant nettement plus faible que celles de la piste de puissance et ne nécessitent pas une épaisseur de cuivre si importante. D'autre part, une piste de puissance de grande largeur occupe beaucoup de place sur une carte à circuit imprimé, au détriment des autres pistes conductrices, dont les trajets pourraient être plus simples et plus courts, et au détriment des dimensions totales de la carte à circuit imprimé qui, sans cela, pourrait être réduite.In addition, in these two known techniques, when several fuses have a terminal electrically connected to the same pole of a DC voltage source, it is necessary to provide on the printed circuit board a power track capable of conveying a relatively high current intensity. important. The power track must therefore have a thickness and / or a relatively large copper width. However, it is neither rational nor economical to give the copper layer of the printed circuit board a large thickness, insofar as the other conductive tracks of the printed circuit usually carry current currents much lower than those of the power track and do not require such a large copper thickness. On the other hand, a large power track occupies a lot of space on a printed circuit board, to the detriment of other conductive tracks, whose paths could be simpler and shorter, and to the detriment of the total dimensions of the card. circuit board which, without it, could be reduced.

La présente invention a donc pour but de remédier aux inconvénients de la technique antérieure exposés ci-dessus.The present invention therefore aims to overcome the disadvantages of the prior art described above.

A cet effet, l'invention fournit un procédé de fabrication en série de modules porte-fusible, caractérisé en ce qu'il comprend les étapes consistant :

  • a) à découper dans une bande de métal conducteur une succession de paires de pièces conductrices, une paire étant prévue pour chaque module porte-fusible, chaque pièce conductrice comportant une partie de contact, destinée à l'établissement d'une liaison électrique et mécanique détachable avec une patte de connexion d'un fusible, et une partie de connexion destinée à l'établissement d'une liaison électrique avec une carte à circuit imprimé, le découpage étant effectué de telle façon que les deux pièces conductrices de chaque paire de pièces conductrices soient disposées symétriquement de part et d'autre de l'axe médian longitudinal de la bande de métal conducteur et s'étendent transversalement par rapport audit axe, les parties de connexion des deux pièces conductrices de chaque paire s'étendant l'une vers l'autre vers ledit axe médian longitudinal, tandis que les parties de contact des deux pièces conductrices de chaque paire s'étendent dans des directions opposées, et de telle façon que des éléments de shuntage soient ménagés dans la région médiane de la bande de métal conducteur, chaque élément de shuntage reliant entre elles quatre pièces conductrices appartenant à deux paires adjacentes de pièces conductrices ;
  • b) à plier en U la bande de métal conducteur autour de deux lignes de pliage parallèles à l'axe médian longitudinal de ladite bande, de telle façon que les éléments de shuntage restent dans le plan de la bande, que les parties de contact des pièces conductrices se dressent perpendiculairement audit plan d'un côté de celui-ci et que les parties de connexion desdites pièces conductrices soient en saillie de l'autre côté dudit plan ;
  • c) à adjoindre à la bande de métal conducteur pliée en U des supports en matière isolante moulée, de telle façon que chaque support emprisonne partiellement une paire de pièces conductrices, les deux parties de contact et les deux parties de connexion de ladite paire restant exposées, et chaque élément de shuntage restant exposé entre deux supports adjacents, grâce à quoi on obtient une succession de modules porte-fusible, reliés les uns aux autres au moins par les éléments de shuntage.
For this purpose, the invention provides a method of series production of fuse holder modules, characterized in that it comprises the steps of:
  • a) to cut in a conductive metal strip a succession of pairs of conductive parts, a pair being provided for each fuse holder module, each conductive part having a contact part, intended for the establishment of an electrical and mechanical connection detachable with a connection tab of a fuse, and a connection portion for establishing an electrical connection with a printed circuit board, the cutting being performed in such a way that the two conductive parts of each pair of parts conductors are arranged symmetrically on either side of the longitudinal central axis of the conductive metal strip and extend transversely relative to said axis, the connecting portions of the two conductive parts of each pair extending towards one the other towards said longitudinal median axis, while the contact portions of the two conductive parts of each pair extend in opposite directions, and such that shunting elements are provided in the middle region of the metal strip conductor, each shunt element interconnecting four conductive parts belonging to two adjacent pairs of conductive parts;
  • b) U-bending the conductive metal strip around two fold lines parallel to the longitudinal median axis of said strip, such that the shunt elements remain in the plane of the strip, the contact portions of the strips conductive parts stand perpendicular to said plane on one side thereof and that the connecting portions of said conductive parts project from the other side of said plane;
  • c) adding to the U-shaped conductive metal strip supports of molded insulating material, such that each support partially traps a pair of conductive parts, the two contact portions and the two connecting portions of said pair remaining exposed , and each shunt element remaining exposed between two adjacent supports, whereby a succession of fuse modules is obtained, connected to each other at least by the shunt elements.

Le procédé selon l'invention peut en outre présenter une ou plusieurs des caractéristiques suivantes :

  • le découpage de la bande de métal conducteur est effectué de telle façon que chaque partie de contact a la forme d'une lyre plate ;
  • le découpage de la bande de métal conducteur est effectué de telle façon que chaque élément de shuntage comporte une partie centrale située sur l'axe médian longitudinal de la bande et quatre barrettes obliques reliant ladite partie centrale respectivement auxdites quatre pièces conductrices ;
  • l'adjonction des supports est effectuée par moulage desdits supports directement sur la bande de métal conducteur ;
  • l'adjonction des supports est effectuée par insertion de la bande dans les supports qui ont été préalablement moulés ;
  • le moulage de chaque support est effectué de telle façon que deux parois de guidage sont formées d'un seul tenant avec le support, les deux parois de guidage se dressant perpendiculairement audit plan de la bande à l'extérieur des branches du U formées respectivement par les parties de contact de la paire de pièces conductrices partiellement emprisonnées dans le support, pour servir de guide à un fusible lors de son branchement dans lesdites parties de contact ;
  • la bande de métal conducteur est soumise à un traitement contre l'oxydation avant l'étape de pliage ou avant l'étape d'adjonction des supports;
  • le moulage des supports est effectué de telle façon que lesdits supports soient liés entre eux par au moins une liaison sécable en matière isolante, et en ce que, après l'opération d'adjonction des supports, la bande de métal conducteur découpée, pliée et munie des supports moulés est segmentée en groupes de modules, chaque groupe de modules formant une barrette comportant un nombre prédéfini de modules porte-fusible ;
  • au cours de l'opération de segmentation les éléments de shuntage sont partiellement éliminés de telle façon que subsistent seulement les parties des éléments de shuntage reliant entre elles les pièces conductrices qui sont situées d'un même côté de l'axe médian longitudinal de la bande de métal conducteur ;
  • au cours de l'opération de segmentation, les éléments de shuntage sont complètement éliminés par découpage de manière à rendre les modules porte-fusible électriquement indépendants les uns des autres ;
  • la bande de métal conducteur découpée, pliée et munie de supports moulés pour les modules porte-fusible est segmentée pour séparer les modules les uns des autres, les éléments de shuntage étant complètement éliminés par découpage au cours de cette opération de segmentation ;
  • le pliage est effectué de telle façon que les parties de connexion se dressent perpendiculairement audit plan de la bande de métal conducteur de façon, après segmentation, à être piquées dans des trous d'une carte à circuit imprimé ;
  • le pliage est effectué de telle façon que lesdites parties de connexion sont cintrées de façon, après segmentation, à être appliquées sur une carte à circuit imprimé, les modules porte-fusibles étant alors des composants à montage en surface ;
  • un fusible est monté sur chaque module porte-fusible après l'opération d'adjonction des supports, avant l'opération de segmentation.
The method according to the invention may furthermore have one or more of the following characteristics:
  • the cutting of the conductive metal strip is performed such that each contact portion is in the form of a flat lyre;
  • the cutting of the conductive metal strip is carried out in such a way that each shunt element comprises a central part situated on the longitudinal central axis of the strip and four oblique strips connecting said central portion respectively to said four conductive pieces;
  • the addition of the supports is carried out by molding said supports directly on the conductive metal strip;
  • the addition of the supports is carried out by insertion of the band into the supports which have been previously molded;
  • the molding of each support is carried out in such a way that two guide walls are formed in one piece with the support, the two guide walls standing perpendicularly to said plane of the strip outside the branches of the U respectively formed by the contact portions of the pair of conductive parts partially trapped in the holder, to serve as a guide for a fuse when connected to said contact portions;
  • the conductive metal strip is subjected to a treatment against oxidation before the folding step or before the step of adding the supports;
  • the molding of the supports is carried out in such a way that said supports are connected to one another by at least one breakable connection of insulating material, and that, after the operation of adding the supports, the conductive metal strip cut, folded and provided with molded supports is segmented into groups of modules, each group of modules forming a bar having a predefined number of fuse modules;
  • during the segmentation operation, the shunt elements are partially eliminated in such a way that only the parts of the shunt elements connecting the conductive parts lying on the same side of the longitudinal central axis of the strip remain. conductive metal;
  • during the segmentation operation, the shunt elements are completely eliminated by cutting so as to make the fuse-holder modules electrically independent of each other;
  • the conductive metal strip cut, folded and provided with molded supports for the fuse modules is segmented to separate the modules of each other, the shunt elements being completely eliminated by cutting during this segmentation operation;
  • the folding is carried out in such a way that the connecting portions stand perpendicularly to said plane of the conductive metal strip so that, after segmentation, they are stitched into holes of a printed circuit board;
  • the folding is performed in such a way that said connecting portions are bent, after segmentation, to be applied to a printed circuit board, the fuse modules then being surface mount components;
  • a fuse is mounted on each fuse holder module after the operation of adding the supports, before the segmentation operation.

L'invention fournit également un module porte-fusible et une barrette de modules porte-fusible obtenus par le procédé présentant une ou plusieurs des caractéristiques indiquées ci-dessus.The invention also provides a fuse module and a strip of fuse modules obtained by the method having one or more of the features indicated above.

L'invention fournit également une barrette de modules porte-fusible du type comprenant un support en matière isolante portant plusieurs paires de pièces conductrices, une paire par module porte-fusible, chaque pièce conductrice comportant une partie de contact, qui est destinée à l'établissement d'une liaison électrique et mécanique détachable avec une patte de connexion d'un fusible, et une partie de connexion qui est destinée à l'établissement d'une liaison électrique avec une carte à circuit imprimé, lesdites paires de pièces conductrices étant espacées le long de l'axe médian longitudinal de la barrette de telle façon que l'une des deux pièces conductrices de chaque paire se trouve d'un côté dudit axe médian et que l'autre pièce conductrice se trouve de l'autre côté dudit axe médian, caractérisée en ce que la barrette contient un élément de shuntage qui relie électriquement toutes les pièces conductrices situées d'un côté dudit axe médian longitudinal.The invention also provides a strip of fuse modules of the type comprising a support of insulating material carrying several pairs of conductive parts, a pair per fuse holder module, each conductive part having a contact part, which is intended for the establishing a detachable electrical and mechanical connection with a fuse connecting lug, and a connecting portion which is intended to establish an electrical connection with a printed circuit board, said pairs of conductive parts being spaced apart along the longitudinal median axis of the bar so that one of the two conductive parts of each pair is on one side of said center line and the other conductive part is on the other side of said axis median, characterized in that the strip contains a shunt element which electrically connects all conductive parts located on one side of said long median axis itudinal.

Grâce à la présente invention, les deux pièces conductrices (contacts) de chaque module porte-fusible sont emprisonnées dans un support en matière isolante. En conséquence, les deux pièces conductrices ou contacts de chaque module porte-fusible, qu'ils soient individuels ou qu'ils fassent parti d'une barrette de modules porte-fusible, n'ont pas besoin d'être insérées individuellement dans des trous d'une carte à circuit imprimé ou dans un logement d'un boîtier commun à plusieurs fusibles, ce qui simplifie déjà les opérations de mise en place des fusibles sur une carte à circuit imprimé.Thanks to the present invention, the two conductive parts (contacts) of each fuse holder module are trapped in a support of insulating material. Accordingly, the two conductive parts or contacts of each fuse module, whether individual or they are from a strip of fuse modules, do not need to be inserted individually into holes in a printed circuit board or in a housing of a common housing with several fuses, which already simplifies the operations installing fuses on a printed circuit board.

En outre, comme déjà indiqué plus haut, selon la manière dont l'opération de pliage est effectuée, l'invention permet d'obtenir des modules porte-fusible individuels ou des barrettes de modules porte-fusible constituant soit des composants à piquer sur une carte à circuit imprimé, soit des composants CMS. Ceci offre de plus larges possibilités quant aux techniques utilisables pour l'implantation des modules porte-fusible ou des barrettes de modules porte-fusible sur une carte à circuit imprimé. En outre, les modules porte-fusible peuvent être conditionnés de façon à être utilisables par des machines automatiques d'implantation de composants sur des cartes à circuit imprimé.In addition, as already indicated above, according to the manner in which the folding operation is carried out, the invention makes it possible to obtain individual fuse holder modules or strips of fuse modules constituting either components to be stitched on a printed circuit board, or CMS components. This offers greater possibilities as to the techniques that can be used for the implantation of fuse modules or fuse module modules on a printed circuit board. In addition, the fuse modules may be packaged so as to be usable by automatic component implantation machines on printed circuit boards.

Si on le désire, les fusibles peuvent être facilement mis en place de manière automatique sur les modules porte-fusible avant l'opération de segmentation de la bande. Ceci facilite donc le travail du fabricant des cartes électroniques.If desired, the fuses can be easily set up automatically on the fuse modules prior to the segmentation operation of the band. This facilitates the work of the manufacturer of electronic cards.

Enfin, dans le cas où le procédé selon l'invention conduit à une barrette de modules porte-fusible qui contient un élément de shuntage reliant électriquement toutes les pièces conductrices situées d'un même côté de l'axe médian longitudinal de la bande de métal conducteur, qui est aussi l'axe médian longitudinal de la barrette de modules porte-fusible, il est alors possible de se passer d'une piste conductrice de puissance sur la carte à circuit imprimé, ou d'en réduire sensiblement la longueur. Cela permet aussi de réduire au moins une dimension de la carte à circuit imprimé et de simplifier éventuellement le trajet des autres pistes conductrices, voire de réduire la longueur de certaines d'entre elles si elles devaient auparavant contourner la piste de puissance pour éviter toute interférence avec elle.Finally, in the case where the method according to the invention leads to a strip of fuse holder modules which contains a shunt element electrically connecting all the conductive parts located on the same side of the longitudinal central axis of the metal strip. The conductor, which is also the longitudinal median axis of the strip of fuse modules, it is then possible to dispense with a power conducting track on the printed circuit board, or to reduce its length substantially. This also makes it possible to reduce at least one dimension of the printed circuit board and possibly simplify the path of the other conductive tracks, or even to reduce the length of some of them if they had to bypass the power track beforehand to avoid any interference. with her.

D'autres caractéristiques et avantages de l'invention apparaîtront mieux au cours de la description suivante de diverses formes de réalisation de l'invention données à titre d'exemple en référence aux dessins annexés sur lesquels :

  • la figure 1 est une vue partielle en plan montrant une bande en métal conducteur après l'opération de découpage du procédé selon l'invention ;
  • la figure 2 est une vue en plan, à plus petite échelle que la figure 1, montrant l'état de la bande après les étapes successives de pliage de la bande de métal conducteur, de moulage des supports en matière isolante et de mise en place des fusibles ;
  • la figure 3 est une vue suivant la flèche F de la figure 2 montrant, à plus grande échelle, l'état de la bande d'un métal conducteur après l'opération de pliage, mais avant l'opération de moulage des supports en matière isolante ;
  • la figure 4 est une vue semblable à la figure 2, la bande étant vue de dessous ;
  • la figure 5 est une vue suivant la flèche G de la figure 2 ;
  • la figure 6 est une vue en coupe suivant la ligne VI-VI de la figure 5;
  • la figure 7 est une vue en perspective, avec arrachement, montrant une barrette de modules porte-fusible obtenue par le procédé suivant l'invention ;
  • la figure 8 est une vue semblable à la figure 7, montrant une autre forme de barrette de modules porte-fusible avec shunt incorporé ;
  • la figure 9 est une vue partielle montrant, à plus grande échelle, le détail A des figures 7 et 8 ;
  • la figure 10 est une vue partielle montrant, à plus grande échelle, le détail B de la figure 7;
  • la figure 11 est une vue partielle montrant, à plus grande échelle, le détail C de la figure 8 ;
  • la figure 12 est une vue en perspective montrant un module porte-fusible individuel obtenu par le procédé selon l'invention, ledit module étant équipé d'un fusible ;
  • la figure 13 est une vue en perspective montrant l'ensemble module porte-fusible et fusible de la figure 12 dans une position renversée ;
  • la figure 14 est une vue en perspective montrant plusieurs ensembles module porte-fusible et fusible selon les figures 12 et 13, collés sur une bande en un matériau souple.
Other characteristics and advantages of the invention will become more apparent during the following description of various embodiments. of the invention given by way of example with reference to the accompanying drawings in which:
  • Figure 1 is a partial plan view showing a conductive metal strip after the cutting operation of the method according to the invention;
  • FIG. 2 is a plan view, on a smaller scale than FIG. 1, showing the state of the strip after the successive steps of folding the conductive metal strip, molding the supports made of insulating material and setting up fuses;
  • FIG. 3 is a view along the arrow F of FIG. 2 showing, on a larger scale, the state of the strip of a conductive metal after the folding operation, but before the molding operation of the substrates made of insulating;
  • Figure 4 is a view similar to Figure 2, the band being viewed from below;
  • Figure 5 is a view along the arrow G of Figure 2;
  • Figure 6 is a sectional view along the line VI-VI of Figure 5;
  • Figure 7 is a perspective view, broken away, showing a strip of fuse modules obtained by the method according to the invention;
  • Fig. 8 is a view similar to Fig. 7 showing another form of fuse module strip with shunt incorporated;
  • Figure 9 is a partial view showing, on a larger scale, the detail A of Figures 7 and 8;
  • Figure 10 is a partial view showing, on a larger scale, the detail B of Figure 7;
  • Figure 11 is a partial view showing, on a larger scale, detail C of Figure 8;
  • Figure 12 is a perspective view showing an individual fuse holder module obtained by the method according to the invention, said module being equipped with a fuse;
  • Fig. 13 is a perspective view showing the fuse holder and fuse module assembly of Fig. 12 in an inverted position;
  • Figure 14 is a perspective view showing several sets fuse holder module and fuse according to Figures 12 and 13, glued on a strip of a flexible material.

En se référant maintenant à la figure 1, on peut voir un tronçon d'une bande 1 (représentée en traits mixtes) en métal conducteur, par exemple à base de cuivre, dans laquelle a été découpée une succession de paires de pièces conductrices 2 et 3 qui sont espacées le long de la bande 1. Chaque pièce conductrice 2 ou 3 comporte une partie de contact 2a ou 3a et une partie de connexion 2b ou 3b.Referring now to FIG. 1, it is possible to see a section of a strip 1 (shown in phantom) of conductive metal, for example copper-based, in which a succession of pairs of conductive parts 2 has been cut out and 3 which are spaced along the strip 1. Each conductive part 2 or 3 has a contact portion 2a or 3a and a connection portion 2b or 3b.

Les parties de contact 2a et 3a de chaque paire de pièces conductrices 2 et 3 sont destinées à établir une liaison électrique et mécanique détachable respectivement avec les deux pattes de connexion d'un fusible comme on le verra plus loin. De préférence, les parties de contact 2a et 3a sont découpées en forme de lyre plate. Une telle forme en lyre plate permet d'obtenir une forte pression de serrage pour un faible déplacement, donc un bon contact électrique avec les pattes de connexion du fusible et une forte force de maintien desdites pattes de connexion entre les deux branches de chaque partie de contact en forme de lyre plate. Les parties de connexion 2b et 3b de chaque paire de pièces conductrices 2 et 3 sont destinées à établir une liaison électrique avec une carte à circuit imprimé comme on le verra également plus loin.The contact portions 2a and 3a of each pair of conductive parts 2 and 3 are intended to establish an electrical and mechanical connection detachable respectively with the two connecting lugs of a fuse as will be seen later. Preferably, the contact portions 2a and 3a are cut into the shape of a flat lyre. Such a flat lyre shape makes it possible to obtain a high clamping pressure for a small displacement, thus a good electrical contact with the connection tabs of the fuse and a strong holding force of said connection tabs between the two branches of each part of contact in the form of a flat lyre. The connection portions 2b and 3b of each pair of conductive parts 2 and 3 are intended to establish an electrical connection with a printed circuit board as will also be seen later.

Les deux pièces conductrices 2 et 3 de chaque paire de pièces conductrices sont disposées symétriquement de part et d'autre de l'axe médian longitudinal 4 de la bande de métal conducteur 1 et elles s'étendent transversalement par rapport audit axe. Les parties de connexion 2b et 3b des deux pièces conductrices 2 et 3 de chaque paire s'étendent l'une vers l'autre vers l'axe médian longitudinal 4, tandis que les parties de contact 2a et 3a des deux pièces conductrices 2 et 3 de chaque paire s'étendent dans des directions opposées, chacune vers un côté longitudinal respectif de la bande 1.The two conductive parts 2 and 3 of each pair of conductive parts are arranged symmetrically on either side of the longitudinal central axis 4 of the conductive metal strip 1 and they extend transversely to said axis. The connection portions 2b and 3b of the two conductive parts 2 and 3 of each pair extend towards each other towards the longitudinal central axis 4, while the contact portions 2a and 3a of the two conductive parts 2 and 3 of each pair extend in opposite directions, each to a respective longitudinal side of the strip 1.

Le découpage de la bande 1 est en outre effectué de telle façon que des éléments de shuntage 5 soient ménagés dans la région médiane de la bande 1 entre les paires de pièces conductrices 2, 3. Chaque élément de shuntage 5 relie entre elles quatre pièces conductrices appartenant à deux paires adjacentes de pièces conductrices 2, 3.The cutting of the strip 1 is further carried out in such a way that shunting elements 5 are formed in the middle region of the strip 1 between pairs of conductive parts 2, 3. Each shunt element 5 interconnects four conductive parts belonging to two adjacent pairs of conductive parts 2, 3.

De préférence, chaque élément de shuntage 5 comporte une partie centrale 5a située sur l'axe 4, et quatre barrettes obliques 5b à 5e, qui relient la partie centrale 5a respectivement à quatre pièces conductrices 2 et 3 appartenant à deux paires adjacentes de pièces conductrices. La partie centrale 5a de chaque élément de shuntage 5 peut avoir par exemple une forme circulaire ou annulaire, avec un trou 6 en son milieu, tous les trous 6 étant régulièrement espacés le long de l'axe 4 et pouvant servir, de façon connue en soi, à l'entraînement pas à pas de la bande 1.Preferably, each shunt element 5 comprises a central portion 5a located on the axis 4, and four oblique strips 5b to 5e, which connect the central portion 5a respectively to four conductive parts 2 and 3 belonging to two adjacent pairs of conductive parts . The central part 5a of each shunt element 5 may have for example a circular or annular shape, with a hole 6 in the middle, all the holes 6 being regularly spaced along the axis 4 and can be used, in a known manner in self, to the training step by step of the band 1.

Après avoir été découpée comme décrit en référence à la figure 1, la bande 1 peut être ensuite soumise à un traitement contre l'oxydation et enroulée sous la forme d'une galette et stockée temporairement en attendant d'être soumise aux autres opérations qui seront décrites plus loin. Le procédé de traitement contre l'oxydation et les appareils pour sa mise en oeuvre son bien connus et n'ont pas besoin d'être décrits.After having been cut as described with reference to FIG. 1, the strip 1 can then be subjected to a treatment against oxidation and rolled up in the form of a cake and temporarily stored while waiting to be subjected to the other operations which will be described below. The oxidation treatment process and apparatus for its implementation are well known and do not need to be described.

La bande 1 découpée et éventuellement traitée contre l'oxydation est ensuite amenée à passer successivement à travers un poste de pliage I, un poste II de moulage par injection ou d'insertion, un poste III d'insertion de composant et enfin un poste IV de segmentation comme montré dans la figure 2. Bien que dans la figure 2 les postes 1 à IV soient représentés relativement proches les uns des autres pour la commodité du dessin, ces différents postes peuvent en réalité se trouver à une distance substantiellement plus grande les uns des autres.The strip 1 cut and optionally treated against oxidation is then passed successively through a bending station I, an injection molding or insertion station II, a component insertion station III and finally a station IV as in Fig. 2. Although in Fig. 2 the stations 1 to IV are shown relatively close to each other for the convenience of the drawing, these different stations may actually be at a substantially greater distance from each other. others.

Dans le poste I, la bande 1 est pliée en U autour de deux lignes de pliage parallèles à l'axe médian longitudinal de la bande comme montré dans la figure 3. Au cours de cette opération de pliage, les éléments de shuntage 5 restent dans le plan de la bande, tandis que les parties de contact 2a et 3a des pièces conductrices 2 et 3 se dressent perpendiculairement audit plan d'un côté de celui-ci. Les parties de connexion 2b et 3b font saillie de l'autre côté dudit plan, par exemple perpendiculairement à celui-ci lorsque les parties 2b et 3b sont destinées à être plantées dans des trous métallisés d'une carte à circuit imprimé.In the station I, the strip 1 is folded in a U around two fold lines parallel to the longitudinal median axis of the strip as shown in FIG. 3. During this folding operation, the shunting elements 5 remain in the plane of the strip, while the contact portions 2a and 3a of the conductive parts 2 and 3 stand perpendicular to said plane on one side thereof. The connecting portions 2b and 3b protrude from the other side of said plane, for example perpendicular thereto when the portions 2b and 3b are intended to be planted in metallized holes of a printed circuit board.

Dans un mode de réalisation de l'invention, le poste II est un poste de moulage par injection dans lequel des supports 7 en une matière thermoplastique isolante sont moulés sur la bande 1. Dans le mode de réalisation représenté sur la figure 2, à chaque arrêt de la bande 1 dans le poste II, il est formé à chaque fois un seul support 7 sur ladite bande, cette dernière étant alors avancée à chaque fois d'un pas correspondant au pas des paires des pièces conductrices 2, 3 le long de la bande 1. Toutefois, il va de soi que le poste de moulage pourrait être agencé pour former simultanément plusieurs supports 7 sur la bande 1 à chaque arrêt de celle-ci dans le poste II. Dans ce dernier cas, la bande 1 est avancée à chaque fois d'un pas correspondant à un multiple du pas des pièces conductrices 2, 3 le long de la bande 1.In one embodiment of the invention, the station II is an injection molding station in which supports 7 made of an insulating thermoplastic material are molded onto the strip 1. In the embodiment shown in FIG. stopping the band 1 in the station II, it is formed each time a single support 7 on said strip, the latter then being advanced each time by a pitch corresponding to the pitch of the pairs of conductive parts 2, 3 along band 1. However, it goes without saying that the molding station could be arranged to simultaneously form several supports 7 on the band 1 at each stop thereof in the station II. In the latter case, the strip 1 is each time advanced by a step corresponding to a multiple of the pitch of the conductive parts 2, 3 along the strip 1.

Dans un autre mode de réalisation de l'invention, le poste II est un poste d'insertion, dans lequel la bande 1 est insérée dans des supports qui sont semblables aux supports 7 et qui ont été préalablement moulés en une matière thermoplastique isolante.In another embodiment of the invention, the station II is an insertion station, in which the band 1 is inserted in supports which are similar to the supports 7 and which have been previously molded in an insulating thermoplastic material.

Lors de l'opération de moulage ou d'insertion, dans le poste II, chaque paire de pièces conductrices 2, 3 est partiellement emprisonnée dans le support 7 en matière isolante, de telle façon que les deux parties de contact 2a et 3a et les deux parties de connexion 2b et 3b de la paire de pièces conductrices 2, 3 restent exposées et que chaque élément de shuntage 5 reste exposé entre deux supports adjacents 7, comme montré dans les figures 2, 4 et 6. Dans le mode de réalisation de la figure 2, on obtient alors une succession de modules porte-fusible 8, qui ont chacun leur propre support 7 et qui sont reliés les uns aux autres par les éléments de shuntage 5.During the molding or insertion operation, in the station II, each pair of conductive parts 2, 3 is partially trapped in the support 7 made of insulating material, so that the two contact parts 2a and 3a and the two connecting parts 2b and 3b of the pair of conductive parts 2, 3 remain exposed and each shunt element 5 remains exposed between two adjacent supports 7, as shown in FIGS. 2, 4 and 6. In the embodiment of FIG. FIG. 2 then gives a succession of fuse holder modules 8, each of which has their own support 7 and which are connected to each other by the shunt elements 5.

Cependant, dans le cas où plusieurs supports 7 sont adjoints par moulage ou par insertion en une seule opération sur la bande 1 dans le poste II, les supports 7 peuvent être alors aussi reliés entre eux par au moins une liaison 9 en matière isolante, venue de moulage avec les supports 7, comme on le verra plus loin en référence aux figures 7 à 10. Dans ce dernier cas, le procédé selon l'invention permet de former des barrettes 10 comportant chacune plusieurs modules porte-fusible 8.However, in the case where several supports 7 are joined by molding or insertion in a single operation on the band 1 in the station II, the supports 7 can then be also connected to each other by at least one connection 9 of insulating material, coming with the supports 7, as will be seen below with reference to FIGS. 7 to 10. In the latter case, the method according to the invention makes it possible to form strips 10 each comprising a plurality of fuse holder modules 8.

Au cours de l'opération de moulage des supports 7, deux parois de guidage 11 et 12 peuvent être aussi formées d'un seul tenant avec chaque support 7. Comme cela est plus particulièrement visible dans les figures 5 et 6 et également dans les figures 7, 8, 12 et 13, les deux parois de guidage 11 et 12 formées sur chaque support 7 se dressent perpendiculairement au plan de la bande 1 à l'extérieur des branches du U formées respectivement par les parties de contact 2a et 3a de la paire de pièces conductrices 2, 3 partiellement noyées dans le support 7.During the molding operation of the supports 7, two guide walls 11 and 12 can also be formed in one piece with each support 7. As is more particularly visible in FIGS. 5 and 6 and also in the figures 7, 8, 12 and 13, the two guide walls 11 and 12 formed on each support 7 stand perpendicular to the plane of the strip 1 outside the branches of the U formed respectively by the contact portions 2a and 3a of the pair of conductive parts 2, 3 partially embedded in the support 7.

Les deux parois 11 et 12 sont destinées à servir de guide pour un fusible ou mini-fusible 13 de type connu, lorsque celui-ci est mis en place sur le module porte-fusible 8 dans le poste III. Chaque fusible 13 a, de façon connue, un corps 14 en une matière isolante et de forme approximativement parallèlépipédique, sur une face duquel font saillie deux pattes planes de connexion 15 et 16. A l'intérieur du corps 14 est noyé un élément conducteur qui est relié électriquement aux pattes 15 et 16 et qui est calibré pour fondre lorsqu'il est parcouru par un courant ayant une intensité prédéterminée. La largeur de l'intervalle entre les deux branches de chaque partie de contact 2a ou 3a en forme de lyre, à l'endroit où cet intervalle est le plus étroit, est dimensionnée de façon à avoir une valeur légèrement plus petite que l'épaisseur des pattes de connexion 15 et 16 du fusible 13.The two walls 11 and 12 are intended to serve as a guide for a fuse or mini-fuse 13 of known type, when it is put in place on the fuse holder module 8 in the station III. Each fuse 13 has, in known manner, a body 14 made of an insulating material and of approximately parallelepipedal shape, on one side of which project two flat connecting tabs 15 and 16. Inside the body 14 is embedded a conductive element which is electrically connected to the legs 15 and 16 and is calibrated to melt when traversed by a current having a predetermined intensity. The width of the gap between the two branches of each lyre-shaped contact portion 2a or 3a, where this gap is narrowest, is dimensioned to have a value slightly smaller than the thickness. connection tabs 15 and 16 of the fuse 13.

Chacune des deux parois de guidage 11 et 12 a, lorsqu'elle est vue en bout, c'est-à-dire dans la direction d'insertion d'un fusible 13 entre elles, la forme d'un canal en U peu profond, de telle façon que le fusible 13 soit guidé sur quatre faces lorsqu'il est inséré entre les parois de guidage 11 et 12 du module porte-fusible 8, tout en permettant la manipulation du fusible 13 à l'aide d'une pince.Each of the two guide walls 11 and 12 has, when viewed at the end, that is to say in the direction of insertion of a fuse 13 between them, the shape of a shallow channel U such that the fuse 13 is guided on four sides when it is inserted between the guide walls 11 and 12 of the fuse holder module 8, while allowing the manipulation of the fuse 13 by means of a clamp.

Au cours de l'opération de moulage des supports 7, une autre paroi 17 peut être également formée d'un seul tenant avec chaque support 7 de manière à se dresser perpendiculairement au plan de la bande de métal conducteur, entre les deux parties de contact 2a et 3a de chaque paire de pièces conductrices 2, 3, comme cela est plus particulièrement visible dans la figure 5 et également dans les figures 7, 8, 12 et 13. Cette paroi 17 est destinée à servir de butée pour limiter la profondeur d'insertion du fusible 13 dans le module porte-fusible 8, comme cela est notamment visible dans la figure 5.During the molding operation of the supports 7, another wall 17 may also be formed in one piece with each support 7 so as to stand perpendicular to the plane of the conductive metal strip, between the two contact parts. 2a and 3a of each pair of conductive parts 2, 3, as is more particularly visible in Figure 5 and also in Figures 7, 8, 12 and 13. This wall 17 is intended to serve as a stop to limit the depth of fuse insertion 13 in the fuse holder module 8, as is particularly visible in Figure 5.

Dans le poste IV, la bande 1 découpée, pliée et munie de supports 7 moulés pour les modules porte-fusible 8 est segmentée à l'aide d'un outil de coupe approprié. Dans le mode de réalisation de la figure 2 où les supports 7 sont indépendants les uns des autres et reliés entre eux seulement par les éléments de shuntage 5, l'opération de segmentation peut alors simplement consister à éliminer complètement par découpage les éléments de shuntage 5. On obtient alors des modules porte-fusible 8 individuels comme celui représenté sur les figures 12 et 13, chaque porte-fusible individuel 8 étant éventuellement garni d'un fusible 13 si un tel fusible y a été inséré au cours du passage du module porte-fusible dans le poste III.In the station IV, the strip 1 cut, folded and provided with molded supports 7 for the fuse holder modules 8 is segmented using a suitable cutting tool. In the embodiment of FIG. 2, where the supports 7 are independent of one another and connected to each other only by the shunt elements 5, the segmentation operation can then consist in completely eliminating by shearing the shunt elements 5 Individual fuse holder modules 8 are thus obtained, as shown in FIGS. 12 and 13, each individual fuse holder 8 optionally being lined with a fuse 13 if such a fuse has been inserted during the passage of the door module. -fuse in post III.

Sur la figure 12, on peut voir que le fusible 13 est retenu dans le module porte-fusible 8 par deux ergots d'encliquetage 18 et 19 situés sur les faces internes mutuellement opposées des parois de guidage 11 et 12, à l'extrémité supérieure de celles-ci. Ces ergots d'encliquetage 18 et 19 peuvent être formés d'un seul tenant avec les parois 11 et 12 lors de l'opération de moulage dans le poste II.In FIG. 12, it can be seen that the fuse 13 is retained in the fuse holder module 8 by two latching lugs 18 and 19 located on the mutually opposite inner faces of the guide walls 11 and 12 at the upper end. of these. These latching lugs 18 and 19 may be formed in one piece with the walls 11 and 12 during the molding operation in station II.

Les modules porte-fusible individuels 8 ainsi obtenus peuvent être par exemple livrés en vrac, en bande alvéolée, en tube, etc..., ou encore, ils peuvent être collés avec un pas d'espacement prédéfini p sur une bande souple 21 recouverte d'une couche adhésive comme montré sur la figure 14. La bande 21 garnie de modules 8 est ensuite enroulée sous la forme d'une galette utilisable dans un processus de pose automatique de composants sur une carte à circuit imprimé.The individual fuse holder modules 8 thus obtained can for example be delivered in bulk, in a blister strip, in a tube, etc., or else they can be glued with a predefined spacing pitch p on a flexible strip 21 covered. of an adhesive layer as shown in Figure 14. The band 21 filled with modules 8 is then wound in the form of a wafer usable in a process of automatic installation of components on a printed circuit board.

Dans un autre mode de réalisation de l'invention, lorsque les supports 7 des modules porte-fusible 8 sont aussi reliés entre eux par au moins une liaison 9 en matière isolante, par exemple deux liaisons 9, comme montré sur les figures 7, 9 et 10, l'opération de segmentation peut être effectuée en coupant les deux liaisons 9 et l'élément de shuntage 5 entre deux modules porte-fusible 8 adjacents, tous les n modules porte-fusible, n étant un nombre entier prédéterminé. Dans ces conditions, on obtient des barrettes 10 comportant chacune n modules porte-fusible 8, par exemple trois modules porte-fusible comme montré dans la figure 7. Dans ce cas, le nombre n est égal à trois, mais il va de soi qu'il pourrait être plus petit ou plus grand que trois.In another embodiment of the invention, when the supports 7 of the fuse modules 8 are also interconnected by at least one connection 9 of insulating material, for example two links 9, as shown in FIGS. 7, 9 and 10, the segmentation operation can be performed by cutting the two links 9 and the shunt element 5 between two adjacent fuse modules 8, all n fuse modules, n being a predetermined integer. Under these conditions, strips 10 each having n fuse holder modules 8 are obtained, for example three fuse holder modules as shown in FIG. in this case, the number n is equal to three, but it goes without saying that it could be smaller or greater than three.

Dans la barrette 10 représentée sur la figure 7, tous les éléments de shuntage 5 ont été complètement éliminés par découpage afin de rendre les modules porte-fusible 8 électriquement indépendants les uns des autres.In the bar 10 shown in FIG. 7, all the shunt elements 5 have been completely eliminated by cutting in order to make the fuse holder modules 8 electrically independent of one another.

En choisissant un outil de coupe approprié, il est également possible de faire en sorte que chaque élément de shuntage 5 ne soit coupé que partiellement, comme montré dans la figure 8. Dans ce cas, dans la barrette 10 obtenue après segmentation, seules subsistent les parties des éléments de shuntage 5 reliant entre elles les pièces conductrices qui sont situées d'un même côté de l'axe médian longitudinal de la bande de métal conducteur, par exemple, les pièces conductrices 2 comme montré dans la figure 8. Etant donné que dans ce cas les supports 7 des divers modules porte-fusible 8 constituant la barrette 10 restent reliés entre eux par une partie des éléments de shuntage 5 après segmentation de la bande et découpage des éléments de shuntage, les liaisons 9 situées entre les supports 7 adjacents du même côté de l'axe médian longitudinal que les parties restantes des éléments de shuntage 5 peuvent être omises comme montré dans les figures 8 et 11. Cela permet non seulement d'économiser de la matière isolante, mais également de faciliter l'opération de segmentation, puisqu'il n'y a plus qu'une seule liaison 9 à couper entre deux modules porte-fusible 8 adjacents pour détacher les barrettes 10 les unes des autres.By choosing an appropriate cutting tool, it is also possible to ensure that each shunting element 5 is cut only partially, as shown in FIG. 8. In this case, in the strip 10 obtained after segmentation, only the remaining segments remain. parts of the shunt elements 5 interconnecting the conductive parts which are situated on the same side of the longitudinal central axis of the conductive metal strip, for example, the conductive parts 2 as shown in FIG. 8. Since in this case, the supports 7 of the various fuse holder modules 8 constituting the strip 10 remain interconnected by a part of the shunt elements 5 after segmentation of the strip and cutting of the shunt elements, the links 9 located between the adjacent supports 7 on the same side of the longitudinal median axis as the remaining parts of the shunt elements 5 can be omitted as shown in FIGS. 8 and 11. This not only saves insulating material, but also facilitates the segmentation operation, since there is more than one link 9 to cut between two adjacent fuse modules 8 to detach the strips 10 each other.

La forme de réalisation de la barrette 10 de modules porte-fusible 8 représentée dans la figure 8 est particulièrement intéressante dans le cas où les fusibles 13 installés sur la barrette 10 sont destinés à être reliés électriquement à une même borne d'une source de courant. Dans ce cas, pour relier entre elles toutes les parties de connexion 2b de la barrette 10, il n'est plus nécessaire de prévoir une piste de puissance sur la carte à circuit imprimé sur laquelle la barrette 10 est destinée à être montée, et il suffit de connecter l'une des parties de connexion 2b de la barrette au circuit imprimé.The embodiment of the strip 10 of fuse modules 8 shown in FIG. 8 is particularly advantageous in the case where the fuses 13 installed on the strip 10 are intended to be electrically connected to the same terminal of a current source. . In this case, to connect together all the connection portions 2b of the bar 10, it is no longer necessary to provide a power track on the printed circuit board on which the bar 10 is intended to be mounted, and it just connect one of the connection portions 2b of the bar to the printed circuit.

Dans les exemples de réalisation décrits ci-dessus, après l'opération de pliage de la bande 1 de métal conducteur, les parties de connexion 2b et 3b des pièces conductrices 2 et 3 s'étendent perpendiculairement au plan de la bande 1 comme cela est notamment visible dans les figures 3 et 5. Dans ce cas, après segmentation de la bande, on obtient des modules porte-fusible 8 ou des barrettes 10 de modules porte-fusible 8 sous la forme de composants électriques destinés à être plantés dans des trous métallisés d'une carte à circuit imprimé, comme la carte 22 partiellement représentée en traits mixtes dans la figure 5. Toutefois, si on le désire, les deux parties de connexion 2b et 3b peuvent être cintrées comme cela est représenté en traits mixtes dans la figure 3 pour la partie de connexion 2b, de telle façon que l'on obtienne, après segmentation de la bande, des modules porte-fusible 8 ou des barrettes 10 de modules porte-fusible 8 sous la forme de composants électriques à montage en surface (composants CMS).In the embodiments described above, after the folding operation of the band 1 of conductive metal, the connection parts 2b and 3b conductive parts 2 and 3 extend perpendicular to the plane of the strip 1 as is particularly visible in Figures 3 and 5. In this case, after segmentation of the strip, we obtain fuse holder modules 8 or strips 10 fuse modules 8 in the form of electrical components to be planted in metallized holes of a printed circuit board, such as the card 22 partially shown in phantom in Figure 5. However, if desired, the two connecting parts 2b and 3b can be bent as shown in phantom in FIG. 3 for the connection part 2b, so that, after segmentation of the strip, fuse-holder modules 8 are obtained or strips 10 of fuse modules 8 in the form of surface mount electrical components (SMD components).

L'opération de mise en place des fusibles 13 dans les modules porte-fusible 8 (poste III) et l'opération de segmentation de la bande 1 (poste IV) ne sont pas nécessairement effectuées sur la même chaîne de production que celle qui effectue le pliage de la bande 1 (poste I) et le moulage des supports 7 (poste II). En effet, après l'opération de moulage, la bande 1 munie des supports 7 pourrait être par exemple enroulée sous la forme d'une galette et temporairement stockée sous cette forme.The operation of placing the fuses 13 in the fuse modules 8 (item III) and the segmentation operation of the band 1 (item IV) are not necessarily performed on the same production line as that which performs the folding of the band 1 (station I) and the molding of the supports 7 (station II). Indeed, after the molding operation, the band 1 provided with the supports 7 could be for example wound in the form of a cake and temporarily stored in this form.

Claims (16)

  1. A process for the mass production of fuse holder modules (8), comprising the stages consisting in:
    a) cutting into a strip (1) of conductive metal a succession of pairs of conductive elements (2, 3), one pair being provided for each fuse holder module (8), each conductive element (2 or 3) comprising a contact portion (2a or 3a) designed to establish a detachable electrical and mechanical connection with a connecting tab (15 or 16) of a fuse (13) and a connecting portion (2b or 3b) designed to establish an electrical connection with a circuit, cutting being performed in such a way that shunting elements (5) are formed in the median area of the conductive metal strip (1);
    b) folding the conductive metal strip (1) in such a way that the shunting elements (5) remain in the plane of the strip and the contact portions (2a, 3a) of the conductive elements (2, 3) stand up perpendicularly to said plane on one side thereof; and
    c) affixing a support of moulded insulating material to the folded conductive metal strip (1);
    characterised in that
    - in stage a), cutting is performed in such a way that the two conductive elements (2, 3) of each pair of conductive elements are disposed symmetrically on either side of the longitudinal median axis (4) of the conductive metal strip (1) and extend transversely relative to said axis, the connecting portions (2b, 3b) of the two conductive elements (2, 3) of each pair extending one towards the other towards said longitudinal median axis (4), while the contact portions (2a, 3a) of the two conductive elements of each pair extend in the opposite directions, and in such a way that each shunting element (5) connects together four conductive elements (2, 3) belonging to two adjacent pairs of conductive elements;
    - in stage b), the strip (1) is folded into a U around two fold lines parallel to the longitudinal median axis (4) of said strip, in such a way that the connecting portions (2b, 3b) of said conductive elements project on the other side of the plane of the strip, to allow their connection to a printed circuit board (22); and
    - in stage c), a plurality of supports (7) of insulating material are affixed to the strip (1) in such a way that each support partially imprisons a pair of conductive elements (2, 3), the two contact portions (2a, 3a) and the two connecting portions (2b, 3b) of said pair remaining exposed, and each shunting element (5a) remaining exposed between two adjacent supports (7), thanks to which a succession of fuse holders (8) is obtained which are linked to one another at least by the shunting means (5).
  2. A process according to claim 1, characterised in that cutting of the conductive metal strip (1) is performed in such a way that each contact portion (2a, 3a) takes the form of a flat lyre-shaped part.
  3. A process according to claim 1, characterised in that cutting of the conductive metal strip (1) is performed in such a way that each shunting element (5) comprises a central portion (5a) situated on the longitudinal median axis (4) of said strip and four small oblique bars (5b-5d) connecting said central portion respectively to said four conductive elements (2, 3).
  4. A process according to claim 1, characterised in that the supports (7) are affixed by moulding of said supports directly onto the conductive metal strip (1).
  5. A process according to claim 1, characterised in that the supports (7) are affixed by insertion of the strip (1) into the supports (7), which have been previously moulded.
  6. A process according to claim 1, characterised in that moulding of each support (7) is performed in such a way that two guide walls (11, 12) are formed in one piece with the support, the two guide walls (11, 12) standing perpendicularly relative to said plane of the strip (1) outside the branches of the U formed respectively by the contact portions (2a, 3a) of the pair of conductive elements (2, 3) partially imprisoned in the support (7), so as to serve as a guide for a fuse (13) when the latter is plugged into said contact portions.
  7. A process according to claim 1, characterised in that the conductive metal strip (1) is subjected to an anti-oxidation treatment prior to the folding stage or prior to the stage of affixing the supports (7).
  8. A process according to claim 1, characterised in that moulding of the supports (7) is performed in such a way that said supports (7) are joined together by at least one separable linking element (9) of insulating material, and in that, after the operation of affixing the supports (7), the conductive metal strip (I) which has been cut, folded and provided with moulded supports is segmented into groups of modules (8), each group of modules forming a block (10) comprising a predefined number of fuse holder modules (8).
  9. A process according to claim 8, characterised in that, during the segmentation operation, said shunting elements (5) are partially removed in such a way that all that remains is the parts of the shunting elements connecting together the conductive elements (2) which are situated on one and the same side of the longitudinal median axis (4) of the conductive metal strip (1).
  10. A process according to claim 8, characterised in that, during the segmentation operation, said shunting elements (5) are completely removed by cutting so as to render the fuse holder modules (8) electrically independent of one another.
  11. A process according to claim 1, characterised in that the conductive metal strip (1) which has been cut, folded and provided with moulded supports (7) for the fuse holder modules (8) is segmented to separate said modules (8) from one another, the shunting elements (5) being completely removed by cutting during said segmentation operation.
  12. A process according to claim 1, characterised in that folding is performed in such a way that said connecting portions (2b, 3b) stand perpendicularly to said plane of the conductive metal strip (1) so as, after segmentation, to be inserted into holes in a printed circuit board (22).
  13. A process according to claim 1, characterised in that folding is performed in such a way that said connecting portions (2b, 3b) are bent so as, after segmentation, to be applied to a printed circuit board, the fuse holder modules then being surface mount components.
  14. A process according to claim 8 or claim 11, characterised in that a fuse (13) is mounted on each fuse holder module (8) after the operation of affixing the supports (7) and prior to the segmentation operation.
  15. A fuse holder module, characterised in that it is obtained by the process according to claim 11.
  16. A block of fuse holder modules, characterised in that it is obtained by the process according to claim 8.
EP00402490A 1999-09-17 2000-09-11 Process for manufacturing fuse holder modules in series and fuse holder modules made by this process Expired - Lifetime EP1085553B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9911645 1999-09-17
FR9911645A FR2798778B1 (en) 1999-09-17 1999-09-17 METHOD FOR THE SERIAL MANUFACTURE OF FUSE HOLDER MODULES AND FUSE HOLDER MODULES OBTAINED BY THE PROCESS

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EP1085553A1 EP1085553A1 (en) 2001-03-21
EP1085553B1 true EP1085553B1 (en) 2006-04-05

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EP00402490A Expired - Lifetime EP1085553B1 (en) 1999-09-17 2000-09-11 Process for manufacturing fuse holder modules in series and fuse holder modules made by this process

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EP (1) EP1085553B1 (en)
AT (1) ATE322739T1 (en)
DE (1) DE60027101T2 (en)
FR (1) FR2798778B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3537776B2 (en) * 2001-02-22 2004-06-14 日本圧着端子製造株式会社 Fuse holder
JP2002251953A (en) * 2001-02-22 2002-09-06 Jst Mfg Co Ltd Multi-fuse holder
JP2005185036A (en) * 2003-12-22 2005-07-07 Yazaki Corp Bus bar structure, electric connection box having that structure, and process for forming bus bar
JP4181028B2 (en) * 2003-12-22 2008-11-12 矢崎総業株式会社 Electrical junction box
FR2897478B1 (en) * 2006-02-14 2009-12-18 Seifel METHOD FOR MAKING A CONNECTOR WITH ELASTIC JAWS OR ELASTIC JAW

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3225319A1 (en) * 1982-07-07 1984-01-12 Zünderwerk Rudolf Brüggemann, 5300 Bonn Kit of components having terminal holders for the detachable attachment of fuse elements, especially for the fusing of circuits in vehicles
US4689597A (en) * 1986-04-29 1987-08-25 Amp Incorporated Electrical fuse component and method of using same
US4944691A (en) * 1988-08-15 1990-07-31 Cooper Industries, Inc. Holder for a removable circuit element
US4846733A (en) * 1988-08-19 1989-07-11 Lucas Electrical Electronic Systems Limited Accessory fuse block
CH690214A5 (en) * 1995-09-19 2000-05-31 Reichle & De Massari Fa A process for the production of contact connectors for connecting devices for connecting electrical conductors.

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Publication number Publication date
EP1085553A1 (en) 2001-03-21
DE60027101D1 (en) 2006-05-18
DE60027101T2 (en) 2007-01-11
ATE322739T1 (en) 2006-04-15
FR2798778A1 (en) 2001-03-23
FR2798778B1 (en) 2002-08-23

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