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EP0573469B1 - Method for fixing a winding to an electronic circuit - Google Patents

Method for fixing a winding to an electronic circuit Download PDF

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Publication number
EP0573469B1
EP0573469B1 EP92904987A EP92904987A EP0573469B1 EP 0573469 B1 EP0573469 B1 EP 0573469B1 EP 92904987 A EP92904987 A EP 92904987A EP 92904987 A EP92904987 A EP 92904987A EP 0573469 B1 EP0573469 B1 EP 0573469B1
Authority
EP
European Patent Office
Prior art keywords
winding
electronic circuit
circuits
component
core
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
EP92904987A
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German (de)
French (fr)
Other versions
EP0573469A1 (en
Inventor
Ake Gustafson
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Assa Abloy AB
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Individual
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06—Coil winding
    • H01F41/076—Forming taps or terminals while winding, e.g. by wrapping or soldering the wire onto pins, or by directly forming terminals from the wire
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/10—Connecting leads to windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/12—Insulating of windings
    • H01F41/127—Encapsulating or impregnating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
    • H01F2027/065—Mounting on printed circuit boards
    • 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
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49071—Electromagnet, transformer or inductor by winding or coiling
    • 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
    • Y10T29/49082—Resistor making
    • Y10T29/49087—Resistor making with envelope or housing
    • 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
    • Y10T29/49082—Resistor making
    • Y10T29/49087—Resistor making with envelope or housing
    • Y10T29/49096—Resistor making with envelope or housing with winding
    • 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.
    • Y10T29/4913—Assembling to base an electrical component, e.g., capacitor, etc.
    • Y10T29/49144—Assembling to base an electrical component, e.g., capacitor, etc. by metal fusion
    • 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
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5187—Wire working

Definitions

  • the present invention relates to the manufacture of electronic components of very small dimensions and in particular those comprising a coil connected to one or more electronic circuits or more precisely to one or more chips or integrated circuits or printed circuits or discrete electronic elements.
  • a coil connected to one or more electronic circuits or more precisely to one or more chips or integrated circuits or printed circuits or discrete electronic elements.
  • the type of electronic circuit in question here has typical dimensions of the order of 1 mm x 1 mm x 0.5 mm and a typical mass of the order of 4 mg, while the coil core , for one of the execution forms considered, has a diameter of the order of 0.8 mm and a length of around 5 mm and that the copper wire used for winding has a typical diameter of 0.020 mm on insulation enameled.
  • the fixing method according to the invention proposes to overcome this drawback by eliminating the intermediate step consisting in first fixing the core to be wound to the electronic circuit.
  • the elimination of this delicate step greatly facilitates the production of such components by making it possible to avoid dirtying the tool or the production machine with glue and on the other hand allows, by having a tool manufactured with precision, to get rid of the need to have precise positioning of the various elements before they are placed on the winding tool.
  • a first object of the invention is therefore to propose a winding method by which, in particular, the electronic circuit or circuits are maintained independently of the winding, suitable guide means guiding the winding wire so that it passes directly to the above metal tracks of the electronic circuit (s).
  • the method can be applied preferably to an automatic winding machine provided with a "flyer" type reel.
  • Another object of the invention is that the above method can be applied to a winding carried out on a core as well as to a winding carried out on a false core, thus making it possible to obtain an air coil.
  • Other objects of the invention are that the welding of the wires on the circuits can take place along a plane parallel to the axis of the core and that different possibilities can be envisaged for removing the component from the machine after winding.
  • the winding method according to the invention meets the characteristics of claims 1 to 7.
  • Another object of the invention is to propose a tool making it possible to carry out the above process, capable of maintaining the different electronic circuits and the winding independently of each other and comprising guide means capable of safely bringing the winding wire to the suitable places for welding and winding.
  • another object of the invention is to provide a component, comprising a winding and at least one electronic circuit, without rigid mechanical connection between the winding and the electronic circuit or circuits, produced in particular by the method and using the tool mentioned above, this component being able to be considered as a semi-finished product and thus meeting the characteristics of claim 12 and then being able to be finished according to several embodiments conforming to the characteristics of claims 13 to 24.
  • a holding tool 1 according to a first embodiment of the invention, is shown in Figure 1; it is quite similar to that described in patent application CH 552 / 91-9; it differs therefrom, which constitutes the invention, by the holding system independently of the electronic circuit and of the core as will be seen below.
  • the tool 1 has a general shape of pliers and comprises a first spout 10, generally a fixed spout and a second spout 11, generally a movable spout, which can deviate from one another, preferably in parallel, or bringing together, leaving an intermediate space 12 between the two internal faces 10A and 11A of said spouts, as well as guide means, constituted here by two guide pins 13 and 14, each of them being disposed on a rear portion of the upper face of the movable spout 11, respectively of the fixed spout 10.
  • the holding tool 1 is intended to hold the component 2 constituted by an electronic circuit 20, comprising two metal tracks 21 and 22 and a core 23 intended to receive the winding 24.
  • the front end of the internal face 10A of the fixed spout 10 includes a recess 10B, the rear part of which is not completely hollowed out but includes a support portion 10C in the extension of the lower part of the spout 10.
  • the width of the recess 10B is slightly less than the width of the electronic circuit 20 and approximately equal to the diameter of the core 23, while the thickness of the support portion 10C remaining in the rear part of said recess is such that the upper face of the electronic circuit 20 is flush with the upper face of the spout 10 when said circuit is disposed on said support portion, as visible in Figure 2 which is a section along the axis II-II of the previous figure.
  • the electronic circuit 20 as well as the core 23 are arranged independently of each other in the tool 1 either manually or automatically by suitable automatic loading devices.
  • the length of the support portion 10C is slightly greater than the length of the electronic circuit 20 when the latter presses on the rear face of the recess 10B.
  • the front face of the support portion 10C serves as a stop against which the end of the core 23 is supported.
  • the core 23 is separated from the electronic circuit 20 by a small space corresponding to the difference between the length of the portion support 10C and the length of the electronic circuit 20, to the tolerances of positioning.
  • the front end 11B of the movable spout 11 comprises a concave recess coming to bear on a cylindrical portion of the core 23, while the electronic circuit 20 is held at the bottom of the recess 10B by a leaf spring 15, the rear end of which is fixed to the internal face 11A of the movable spout 11. Keeping the two elements 20 and 23 between the two spouts of the tool independently of one another is new and is part of the invention.
  • the winding 24 is preferably carried out using a "Flyer” (not shown).
  • the winding wire 25 is brought by the "Flyer” which passes it behind the first guide pin 13, then over the first metal track 21, to carry out the winding 24 around the core 23, before removing the wire over it the second metal track 22 and from behind the second guide pin 14 to take it to the next holding tool.
  • the two portions of wire lying directly above each of the metal tracks 21 and 22 are welded to said tracks, by an automatic welding device (not shown) which removes the enameled insulation of the portion of wire in question at the same time while it is welding.
  • a transfer device (not shown) can now come and take the component 2 by gripping it preferably by the core 23, or by the electronic circuit 20, and remove it from the holding tool 1 after opening the movable spout 11 and cutting or tearing of the ends of the wire before the welding carried out on the metal track 21 and after that carried out on the metal track 22.
  • the relative positions of the two guide pins 13 and 14, between them and with the circuit 20 make that, as shown in Figure 1, the wire arriving to be wound and that leaving after winding cross at a point between the circuit 20 and the winding 24; it would also be possible to arrange these different elements so that the crossing of the two wires is located outside of the component 2.
  • the manner of producing the winding 24 described here corresponds in a preferential manner; we can find some variations in the way of using the "Flyer", in particular by assisting with fingers or auxiliary guide hooks as required.
  • FIG. 4 A second embodiment of a tool 1 according to the invention is shown in Figures 3 and 4 where it is applied to the manufacture of a coil 24 without a core to which is added an electronic circuit 20.
  • the recess 10B in which the circuit 20 is housed maintains said circuit on three lateral faces, while an extension of the movable spout 11 comes to hold the fourth lateral face.
  • the thickness of the extension of the movable spout 11 coming to bear on the circuit 20 is approximately equal to that of the circuit, so that the bottom of the circuit 20 can rest on a bottom part plane of housing 10B.
  • the movable spout 11 only serves to maintain the circuit 20 in its housing by means of its extension.
  • a false core as shown for example at 16, consisting of a first fixed cheek 16A, fixed at the end of the spout 10, a second movable cheek 16B, a coil bottom 16C, of section not necessarily circular, fixed either to the fixed cheek 16A, or to the fixed cheek 16B and of fastening means 16D for securing the movable cheek 16B and the coil bottom 16C to the fixed cheek 16A.
  • Guide means 16E for example one or more notches, can be arranged on a portion of the periphery of the fixed cheek 16A in order to guide the winding wire 25.
  • the notch or notes 16E have a suitable shape, in principle three-dimensional , in order to guide the wire correctly and safely when it arrives on the winding and when it is removed.
  • tool 1 has yet another modification compared to the first embodiment described above.
  • the tool 1 shown here has only one guide pin 17 used to guide the wire 25 as well during its arrival on tool 1 only when it left. So that the guidance is correct, and so that the two portions of wire overhanging the metal tracks 21 and 22 are parallel, the diameter of the pin 17 will preferably be equal to the distance between the two metal tracks 21 and 22.
  • the winding operation is carried out in a similar manner to what has been described above, the wire 25 being brought to the tool 1 from behind the pin 17, then passing over the metal track 21 of the circuit 20, then through the '' or the first notch 16E to be then wound around the coil bottom 16C, between the two cheeks 16A and 16B, then be removed by the notch or the second notch 16E, to pass over the metal track 22 then from behind the pin 17.
  • FIG. 5 shows yet another embodiment of a tool 1, intended to simultaneously dispose several circuits 20, 20A ... on a coil 24.
  • the housing 10B provided in the fixed spout 10 is dimensioned for receive several circuits, two in the case shown, arranged one behind the other on the main longitudinal axis of the tool 1.
  • Spacing means 10D possibly retractable, can be provided in said housing so that a free space remains between circuits. It is an advantage of the embodiment of the tool 1 comprising only a single guide pin 17, to have a portion of said tool over which the ends of the wires 25 entering and leaving the winding are arranged in parallel between them.
  • the tool 1 is here shown to be used for making a coil 24 on a core 26 having a core bottom and two cheeks.
  • This core 26 can be made of any material depending on the use to be made of it, it can be made of synthetic material, magnetic or not, rigid or flexible. Since the core bottom is preferably hollow, a tenon 18 can be provided on the end of the spout 10, arranged along the main axis of the tool 1, and on which it is possible to thread the core 26.
  • Additional means for guiding the wire 25 to arrange it properly on the core 26 can be provided, for example two or four pins 19 possibly profiled, arranged at the end of the spout 10 or one or two grooves 26A of suitable shape, arranged on a portion of the cheek of the core 26 in contact with the spout 10.
  • the ends of the fixed and movable spouts of FIG. 1 are particularly suitable for small cylindrical cores, while the methods of fixing the coil by a lug 18 as in FIG. 5 or by a false coil body 16 as in Figure 3, essentially depend on the type of winding to achieve.
  • the embodiment according to which the guide means consist only of a single pin 17 as in FIG. 5 is particularly suitable for cases where there is a component comprising more than one circuit 20.
  • the mode of maintenance of the circuit 20, with or without spring 15 can be chosen for any embodiment.
  • the auxiliary guide means, pins 19 and / or profiled grooves 16E or 26A are chosen as required.
  • Another advantage of the method and of the tool according to the invention is that the operation of welding the fine wire onto the metal tracks can be done in a plane parallel to the axis of the coil, generally in a horizontal plane; for conventional winding machines, this facilitates the welding operation.
  • the circuit (s) 20 along a vertical plane, in the case where there is a machine performing the welds along a vertical plane.
  • One or more electronic circuits 20, 20A, ... are mentioned in the description; as mentioned above, it may be either a complete miniaturized integrated electronic circuit or else a simple electronic element, such as for example a capacitor or even a miniature printed circuit. In the case where several circuits are assembled, it is possible for example to have identical or different circuits or a circuit and an electronic element or even identical or different electronic elements.
  • the characteristics common to these parts are very small dimensions and mass, as well as the fact that two metallic contact tracks are accessible on one face of each of said parts.
  • the components 2 consisting of a winding connected to one or more circuits cannot be used as such but must be conditioned.
  • the miniature winding 24 connected to the circuit 20, as shown in FIG. 1 must be considered as a semi-finished product, ie a component according to the invention as shown in FIG. 6, consisting of a core 23 on which the winding 24 is produced, the two ends of the winding wires being welded on the metal tracks 21 and 22 of an electronic circuit 20.
  • the only connection between the electronic circuit 20 and the core 23 is made by means of said ends of the wires of the winding which thus ensure both the electrical connection between the two elements and the mechanical connection between these same two elements.
  • the mechanical rigidity offered by the two connecting wires is sufficient to support one or the other of said elements when the complete component is held by the other of said elements, the core 23 or the circuit 20.
  • the slight spacing provided between them when fitting the circuit 20 and the core 23 on the tool 1 there is no tensile stress on the wires due to improper positioning of one of the elements by compared to each other.
  • connection wires can only be a temporary connection and cannot be a permanent connection; it is nevertheless sufficient for it to be possible to omit a first step of fixing the electronic circuit 20 to the core 23, the abolition of said step of the manufacturing process allowing a substantial saving of time and money.
  • FIG. 6A the component was introduced into a mini glass tube 30 closed at one end, containing a certain amount of a liquid 31 capable of hardening, for example by polymerization under the effect of exposure to UV radiation , or a two-component liquid that hardens when the two components are combined, in order to fix the two elements together and with the tube 30.
  • the tube 30 is then hermetically sealed by fusion or by a sealant 32.
  • the two elements of component 2 are simply placed on a rigid support 33 on which they are glued; they are secured to each other via said rigid support.
  • the assembly may or may not be covered, partially or completely, with a protective coating.
  • the component 2 is simply covered with a coating coating 34 which ensures its mechanical strength.
  • Figure 6D A fourth possible embodiment of the completed component is shown in Figure 6D; in this case, the component has been placed between two independent portions 35A and 35B of a flexible sheet of synthetic material, the free edges 36 of said portions then being sealed together in any suitable manner, by thermal effect, by bonding, by crimping, etc.
  • the envelope according to this embodiment can be designed from a folded sheet in order to obtain the two portions 35A and 35B, only three free edges 36 being sealed, or else two separate portions 35A and 35B including the four free edges 36 are sealed, or else a tube made of a rolled up sheet and already closed on a generator, the two free edges 36 to be sealed being formed by the ends of the tube. So that the component cannot move between the two sheet portions 35A and 35B, the sealing takes place as close as possible to the component, or else a vacuum is created between the two sheet portions before sealing, so that the component is held firmly in its envelope .
  • the envelope sheet is made of a thin and flexible material, the small dimensions of the component, respectively of its envelope, mean that the component is held in its envelope in a sufficiently rigid manner.
  • FIG. 6E An advantage of this latter embodiment of the envelope of a component is visible in FIG. 6E, where we see a plurality of components 2 assembled in a chain.
  • Components 2 are arranged side by side with a free space between them, between two flexible strips 35A and 35B, seals 36, preferably welds are made around the component in order to seal component 2 inside an envelope watertight consisting of two portions of the strips 35A and 35B connected by the seals 36.
  • the enveloping of the components can be done by automatic means, the storage of the finished parts is facilitated since it is easier to store a strip having a known number of elements rather than the same number of individual elements; it is very easy to obtain one or more individual finished elements since it then suffices to cut the strip, manually or by automatic means, between two consecutive welds located in the space separating two components.
  • Individual hooking or fixing means can easily be added to envelopes made of thin sheets, for example one or more holes 37 arranged on one or more portions of the strip preferably arranged outside the sealed part, thus making it possible to fix each component to any other structure.
  • the means of stiffening the component will be adapted to the type of coil and to its use; they will generally be less critical than for the first embodiment seen above, due to the larger dimensions of the coil.
  • the electronic circuit or circuits will be of first folded down in the plane of the winding, possibly inside the free space inside the winding, this manually or by mechanical means, by passing through a guide slide of suitable shape or by air jet, then the whole will be coated between two synthetic sheets, preferably semi-rigid or rigid, as can be seen in FIG. 7 where the upper coating sheet is removed in order to distinguish the positioning of the component.
  • connection wires For the semi-finished product produced by the tool according to FIG. 5, it is generally sufficient as before to fold the connection wires in order to bring the circuit (s) 20.20A ... in a plane parallel to the cheek of the coil 26 as shown in FIG. 8. According to requirements, it is then possible to fix the circuit (s) to said cheek, by gluing for example. If the coil core has a housing of sufficient size, it is also possible to fold down the circuit (s) there and possibly stick them to it in order to ensure their mechanical protection.
  • the relative position of the electronic circuit 20 and the winding 24 is not important, the play between these two elements being only limited by the available length connecting wires. Subsequently this component will be part of a larger electronic circuit, its excitation being provided by electromagnetic field.
  • the electronic circuit in question can take different forms; it can also be an integrated circuit, a simple discrete electronic component or a printed circuit.
  • the component can be terminated in many other ways as required.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Electric Connection Of Electric Components To Printed Circuits (AREA)
  • Windings For Motors And Generators (AREA)

Abstract

PCT No. PCT/EP92/00363 Sec. 371 Date Jul. 26, 1993 Sec. 102(e) Date Jul. 26, 1993 PCT Filed Feb. 20, 1992 PCT Pub. No. WO92/15105 PCT Pub. Date Sep. 3, 1992The fixing process according to the invention of a winding to one or more electronic circuits permits elimination of an important manufacturing step of the processes according to the prior art, whether the positioning, then the gluing or the precise fixing of the winding or of the core to be wound on the electronic circuit or circuits. By a suitable arrangement of the electronic circuit or circuits and of the possible core, independently of one another, on a holding tool according to the invention, a semi-finished product is obtained, also according to the invention, made up of said circuit or circuits and said winding, the mechanical connection between them being ensured solely by the copper wires producing, moreover, the electrical connecting between the two elements. The finished component according to the invention will be obtained by disposing the preceding semi-finished product on a support ensuring a permanent mechanical connection between the two elements.

Description

La présente invention concerne la confection de composants électroniques de très faibles dimensions et en particulier de ceux comprenant un bobinage connecté à un ou plusieurs circuits électroniques ou plus précisément à un ou plusieurs chips ou circuits intégrés ou circuits imprimés ou éléments électroniques discrets. On parlera de circuit électronique dans la suite de la description, étant bien entendu qu'il peut s'agir chaque fois de l'un ou de l'autre des éléments mentionnés ci-dessus.The present invention relates to the manufacture of electronic components of very small dimensions and in particular those comprising a coil connected to one or more electronic circuits or more precisely to one or more chips or integrated circuits or printed circuits or discrete electronic elements. We will talk about electronic circuit in the following description, it being understood that it can be each time one or the other of the elements mentioned above.

On rencontre certains problèmes lors de la confection de tels composants, causés principalement par les très faibles dimensions des éléments en question; en effet, le type de circuit électronique dont il est question ici a des dimensions typiques de l'ordre de 1 mm x 1 mm x 0,5 mm et une masse typique de l'ordre de 4 mg, alors que le noyau de bobine, pour l'une des formes s'exécution considérée, a un diamètre de l'ordre de 0,8 mm et une longueur d'environ 5 mm et que le fil de cuivre servant au bobinage a un diamètre typique de 0,020 mm sur isolation émaillée.Some problems are encountered when making such components, caused mainly by the very small dimensions of the elements in question; indeed, the type of electronic circuit in question here has typical dimensions of the order of 1 mm x 1 mm x 0.5 mm and a typical mass of the order of 4 mg, while the coil core , for one of the execution forms considered, has a diameter of the order of 0.8 mm and a length of around 5 mm and that the copper wire used for winding has a typical diameter of 0.020 mm on insulation enameled.

En réalisant un tel composant de la manière classique, il est nécessaire de fixer le ou les circuits électroniques au noyau avant le bobinage de ce dernier, la fixation en position de l'un de ces éléments par rapport à l'autre devant se faire avec grande précision afin que les extrémités des fils de bobinage puissent être amenées avec sûreté en face des pistes métalliques disposées sur le circuit électronique, pour y être soudées, sur une machine à bobiner automatique. Un tel composant selon l'art antérieur est décrit dans la demande EP-A-0.405.671 ou l'on voit que le ou les circuits sont fixés tout d'abord sur une portion spécialement formée du noyau.By making such a component in the conventional manner, it is necessary to fix the electronic circuit (s) to the core before the latter is wound, the fixing in position of one of these elements relative to the other having to be done with high precision so that the ends of the winding wires can be brought safely in front of the metal tracks arranged on the electronic circuit, to be soldered there, on an automatic winding machine. Such a component according to the prior art is described in EP-A-0.405.671 or we see that the circuit or circuits are first fixed on a specially formed portion of the core.

Le procédé de fixation selon l'invention se propose de s'affranchir de cet inconvénient en supprimant l'étape intermédiaire consistant à fixer premièrement le noyau à bobiner au circuit électronique. La suppression de cette étape délicate facilite beaucoup la production de tels composants en permettant d'éviter de salir l'outil ou la machine de production par de la colle et d'autre part permet, en disposant d'un outil fabriqué avec précision, de s'affranchir de la nécessité d'avoir un positionnement précis des divers éléments avant qu'ils soient disposés sur l'outil de bobinage.The fixing method according to the invention proposes to overcome this drawback by eliminating the intermediate step consisting in first fixing the core to be wound to the electronic circuit. The elimination of this delicate step greatly facilitates the production of such components by making it possible to avoid dirtying the tool or the production machine with glue and on the other hand allows, by having a tool manufactured with precision, to get rid of the need to have precise positioning of the various elements before they are placed on the winding tool.

Un premier but de l'invention est donc de proposer un procédé de bobinage par lequel, en particulier, le ou les circuits électroniques sont maintenus indépendamment du bobinage, des moyens de guidage appropriés guidant le fil de bobinage afin qu'il passe directement au-dessus de pistes métalliques du ou des circuits électroniques. Un autre but de l'invention est que le procédé puisse être appliqué de préférence à une machine automatique de bobinage munie d'un dévidoir de type "flyer". Un autre but de l'invention est que le procédé précédent puisse être appliqué à un bobinage effectué sur un noyau aussi bien qu'à un bobinage effectué sur un faux noyau, permettant ainsi d'obtenir une bobine à air. D'autres buts de l'invention sont que les soudures des fils sur les circuits puissent se faire selon un plan parallèle à l'axe du noyau et que différentes possibilités puissent être envisagées pour retirer de la machine le composant après bobinage.A first object of the invention is therefore to propose a winding method by which, in particular, the electronic circuit or circuits are maintained independently of the winding, suitable guide means guiding the winding wire so that it passes directly to the above metal tracks of the electronic circuit (s). Another object of the invention is that the method can be applied preferably to an automatic winding machine provided with a "flyer" type reel. Another object of the invention is that the above method can be applied to a winding carried out on a core as well as to a winding carried out on a false core, thus making it possible to obtain an air coil. Other objects of the invention are that the welding of the wires on the circuits can take place along a plane parallel to the axis of the core and that different possibilities can be envisaged for removing the component from the machine after winding.

Afin d'atteindre ces différents buts, le procédé de bobinage selon l'invention répond aux caractéristiques des revendications 1 à 7.In order to achieve these various aims, the winding method according to the invention meets the characteristics of claims 1 to 7.

Un autre but de l'invention est de proposer un outil permettant de réaliser le procédé précédent, apte à maintenir indépendamment les uns des autres les différents circuits électroniques et le bobinage et comportant des moyens de guidage aptes à amener avec sûreté le fil de bobinage aux endroits adéquats pour soudage et bobinage.Another object of the invention is to propose a tool making it possible to carry out the above process, capable of maintaining the different electronic circuits and the winding independently of each other and comprising guide means capable of safely bringing the winding wire to the suitable places for welding and winding.

Ce but est obtenu par un outil de maintien spécialement conçu et répondant aux caractéristiques des revendications 8 à 11.This object is obtained by a holding tool specially designed and meeting the characteristics of claims 8 to 11.

Et enfin un autre but de l'invention est de proposer un composant, comportant un bobinage et au moins un circuit électronique, sans liaison mécanique rigide entre le bobinage et le ou les circuits électroniques, réalisé notamment par le procédé et à l'aide de l'outil mentionnés plus haut, ce composant pouvant être considéré comme un semi-produit et répondant alors aux caractéristiques de la revendication 12 et pouvant ensuite être terminé selon plusieurs formes d'exécution conformes aux caractéristiques des revendications 13 à 24.And finally another object of the invention is to provide a component, comprising a winding and at least one electronic circuit, without rigid mechanical connection between the winding and the electronic circuit or circuits, produced in particular by the method and using the tool mentioned above, this component being able to be considered as a semi-finished product and thus meeting the characteristics of claim 12 and then being able to be finished according to several embodiments conforming to the characteristics of claims 13 to 24.

Cette invention est plus particulièrement compréhensible à partir du dessin en annexe avec les figures où:

  • la figure 1 représente une vue par dessus d'une première forme d'exécution d'un outil de maintien selon l'invention,
  • la figure 2 représente une coupe longitudinale selon la ligne II-II de l'outil de maintien de la figure précédente,
  • la figure 3 représente une vue par dessus d'une autre forme d'exécution d'un outil de maintien selon l'invention,
  • la figure 4 représente une coupe longitudinale selon la ligne IV-IV de l'outil de maintien de la figure précédente,
  • la figure 5 représente encore une autre forme d'exécution d'un outil de maintien selon l'invention,
  • la figure 6 représente un composant selon l'invention sous forme d'un semi-produit, et
  • les figures 6A, 6B, 6C, 6D et 6E représentent d'autres formes d'exécution d'un composant terminé.
  • la figure 7 représente une autre forme d'exécution d'un composant terminé, et
  • la figure 8 représente encore une autre forme d'exécution d'un composant terminé.
This invention is more particularly understandable from the attached drawing with the figures where:
  • FIG. 1 represents a view from above of a first embodiment of a holding tool according to the invention,
  • FIG. 2 represents a longitudinal section along line II-II of the holding tool of the previous figure,
  • FIG. 3 represents a view from above of another embodiment of a holding tool according to the invention,
  • Figure 4 shows a longitudinal section along line IV-IV of the holding tool of the previous figure,
  • FIG. 5 represents yet another embodiment of a holding tool according to the invention,
  • FIG. 6 represents a component according to the invention in the form of a semi-finished product, and
  • Figures 6A, 6B , 6C , 6D and 6E show other embodiments of a finished component.
  • FIG. 7 represents another embodiment of a finished component, and
  • Figure 8 shows yet another embodiment of a completed component.

Un outil de maintien 1, selon une première forme d'exécution de l'invention, est représenté sur la figure 1; il est assez semblable à celui décrit dans la demande de brevet CH 552/91-9; il en diffère, ce qui constitue l'invention, par le système de maintien de façon indépendante du circuit électronique et du noyau comme on le verra plus bas. L'outil 1 a une forme générale de pince et comprend un premier bec 10, généralement un bec fixe et un second bec 11, généralement un bec mobile, pouvant s'écarter l'un de l'autre, de préférence parallèlement, ou se rapprocher en laissant un espace intermédiaire 12 entre les deux faces internes 10A et 11A desdits becs, ainsi que des moyens de guidage, constitués ici de deux picots de guidage 13 et 14, chacun d'eux étant disposé sur une portion arrière de la face supérieure du bec mobile 11, respectivement du bec fixe 10. L'outil de maintien 1 est destiné à maintenir le composant 2 constitué d'un circuit électronique 20, comportant deux pistes métalliques 21 et 22 et d'un noyau 23 destiné à recevoir le bobinage 24. Pour maintenir indépendamment le circuit 20 et le noyau 23, l'extrémité avant de la face interne 10A du bec fixe 10 comprend un évidement 10B dont la partie arrière n'est pas complètement évidée mais comprend une portion d'appui 10C dans le prolongement de la partie inférieure du bec 10. La largeur de l'évidement 10B est légèrement inférieure à la largeur du circuit électronique 20 et environ égale au diamètre du noyau 23, alors que l'épaisseur de la portion d'appui 10C restant dans la partie arrière dudit évidement est telle que la face supérieure du circuit électronique 20 affleure la face supérieure du bec 10 lorsque ledit circuit est disposé sur ladite portion support, comme visible à la figure 2 qui est une coupe selon l'axe II-II de la figure précédente. Le circuit électronique 20 ainsi que le noyau 23 sont disposés indépendamment l'un de l'autre dans l'outil 1 soit manuellement soit automatiquement par des dispositifs adéquats de chargement automatique.A holding tool 1, according to a first embodiment of the invention, is shown in Figure 1; it is quite similar to that described in patent application CH 552 / 91-9; it differs therefrom, which constitutes the invention, by the holding system independently of the electronic circuit and of the core as will be seen below. The tool 1 has a general shape of pliers and comprises a first spout 10, generally a fixed spout and a second spout 11, generally a movable spout, which can deviate from one another, preferably in parallel, or bringing together, leaving an intermediate space 12 between the two internal faces 10A and 11A of said spouts, as well as guide means, constituted here by two guide pins 13 and 14, each of them being disposed on a rear portion of the upper face of the movable spout 11, respectively of the fixed spout 10. The holding tool 1 is intended to hold the component 2 constituted by an electronic circuit 20, comprising two metal tracks 21 and 22 and a core 23 intended to receive the winding 24. To independently maintain the circuit 20 and the core 23, the front end of the internal face 10A of the fixed spout 10 includes a recess 10B, the rear part of which is not completely hollowed out but includes a support portion 10C in the extension of the lower part of the spout 10. The width of the recess 10B is slightly less than the width of the electronic circuit 20 and approximately equal to the diameter of the core 23, while the thickness of the support portion 10C remaining in the rear part of said recess is such that the upper face of the electronic circuit 20 is flush with the upper face of the spout 10 when said circuit is disposed on said support portion, as visible in Figure 2 which is a section along the axis II-II of the previous figure. The electronic circuit 20 as well as the core 23 are arranged independently of each other in the tool 1 either manually or automatically by suitable automatic loading devices.

On remarque que, sur les deux figures, la longueur de la portion support 10C est légèrement plus grande que la longueur du circuit électronique 20 lorsque ce dernier appuie sur la face arrière de l'évidement 10B. La face avant de la portion support 10C sert de butée contre laquelle vient s'appuyer l'extrémité du noyau 23. Ainsi, le noyau 23 est séparé du circuit électronique 20 d'un petit espace correspondant à la différence entre la longueur de la portion support 10C et la longueur du circuit électronique 20, aux tolérances de positionnement près. Pour maintenir le noyau 23 en position, l'extrémité avant 11B du bec mobile 11 comprend un évidement concave venant s'appuyer sur une portion cylindrique du noyau 23, alors que le circuit électronique 20 est maintenu au fond de l'évidement 10B par une lame ressort 15 dont l'extrémité arrière est fixée à la face interne 11A du bec mobile 11. Le fait de maintenir les deux éléments 20 et 23 entre les deux becs de l'outil indépendamment l'un de l'autre est nouvelle et fait partie de l'invention.Note that, in the two figures, the length of the support portion 10C is slightly greater than the length of the electronic circuit 20 when the latter presses on the rear face of the recess 10B. The front face of the support portion 10C serves as a stop against which the end of the core 23 is supported. Thus, the core 23 is separated from the electronic circuit 20 by a small space corresponding to the difference between the length of the portion support 10C and the length of the electronic circuit 20, to the tolerances of positioning. To keep the core 23 in position, the front end 11B of the movable spout 11 comprises a concave recess coming to bear on a cylindrical portion of the core 23, while the electronic circuit 20 is held at the bottom of the recess 10B by a leaf spring 15, the rear end of which is fixed to the internal face 11A of the movable spout 11. Keeping the two elements 20 and 23 between the two spouts of the tool independently of one another is new and is part of the invention.

Le bobinage 24 est réalisé de préférence à l'aide d'un "Flyer" (non représenté). Le fil de bobinage 25 est amené par le "Flyer" qui le fait passer derrière le premier picot de guidage 13, puis par dessus la première piste métallique 21, pour effectuer le bobinage 24 autour du noyau 23, avant de retirer le fil par dessus la deuxième piste métallique 22 et par derrière le deuxième picot de guidage 14 pour l'emmener vers l'outil de maintien suivant. Ensuite les deux portions de fil se trouvant directement au-dessus de chacune des pistes métalliques 21 et 22 sont soudées auxdites pistes, par un appareil de soudage automatique (non représenté) qui enlève l'isolation émaillée de la portion de fil en question en même temps qu'il procède au soudage. Un dispositif de transfert (non représenté) peut maintenant venir prendre le composant 2 en le saisissant de préférence par le noyau 23, ou par le circuit électronique 20, et le retirer de l'outil de maintien 1 après ouverture du bec mobile 11 et coupure ou arrachage des extrémités de fil avant la soudure effectuée sur la piste métallique 21 et après celle effectuée sur la piste métallique 22. Les positions relatives des deux picots de guidage 13 et 14, entre eux et avec le circuit 20 font que, comme représenté sur la figure 1, le fil arrivant pour être bobiné et celui sortant après bobinage se croisent en un point situé entre le circuit 20 et le bobinage 24; il serait tout aussi possible de disposer ces différents éléments de manière à ce que le croisement des deux fils se situe en dehors du composant 2. La manière de réaliser le bobinage 24 décrite ici correspond à une manière préférentielle; on peut trouver certaines variantes dans la manière d'utiliser le "Flyer", en particulier en l'assistant de doigts ou de crochets de guidage auxiliaires selon les besoins.The winding 24 is preferably carried out using a "Flyer" (not shown). The winding wire 25 is brought by the "Flyer" which passes it behind the first guide pin 13, then over the first metal track 21, to carry out the winding 24 around the core 23, before removing the wire over it the second metal track 22 and from behind the second guide pin 14 to take it to the next holding tool. Then the two portions of wire lying directly above each of the metal tracks 21 and 22 are welded to said tracks, by an automatic welding device (not shown) which removes the enameled insulation of the portion of wire in question at the same time while it is welding. A transfer device (not shown) can now come and take the component 2 by gripping it preferably by the core 23, or by the electronic circuit 20, and remove it from the holding tool 1 after opening the movable spout 11 and cutting or tearing of the ends of the wire before the welding carried out on the metal track 21 and after that carried out on the metal track 22. The relative positions of the two guide pins 13 and 14, between them and with the circuit 20 make that, as shown in Figure 1, the wire arriving to be wound and that leaving after winding cross at a point between the circuit 20 and the winding 24; it would also be possible to arrange these different elements so that the crossing of the two wires is located outside of the component 2. The manner of producing the winding 24 described here corresponds in a preferential manner; we can find some variations in the way of using the "Flyer", in particular by assisting with fingers or auxiliary guide hooks as required.

Une deuxième forme d'exécution d'un outil 1 selon l'invention est représenté sur les figures 3 et 4 où il est appliqué à la fabrication d'un bobinage 24 sans noyau auquel est ajouté un circuit électronique 20. Pour cette forme d'exécution de l'outil de maintien, l'évidement 10B dans lequel est logé le circuit 20, maintient ledit circuit sur trois faces latérales, alors qu'un prolongement du bec mobile 11 vient maintenir la quatrième face latérale. Comme on le voit sur la figure 4, l'épaisseur du prolongement du bec mobile 11 venant s'appuyer sur le circuit 20 est approximativement égale à celle du circuit, faisant que le fond du circuit 20 peut s'appuyer sur une partie de fond plane du logement 10B. Dans cette forme d'exécution, le bec mobile 11 ne sert qu'à maintenir le circuit 20 dans son logement par l'intermédiaire de son prolongement. Dans le cas de la confection d'un bobinage à air, c'est-à-dire sans noyau, il est nécessaire de disposer d'un faux noyau comme représenté par exemple en 16, constitué d'une première joue fixe 16A, fixée à l'extrémité du bec 10, d'une seconde joue mobile 16B, d'un fond de bobine 16C, de section non nécessairement circulaire, fixé soit à la joue fixe 16A, soit à la joue fixe 16B et de moyens de fixation 16D permettant de solidariser la joue mobile 16B ainsi que le fond de bobine 16C à la joue fixe 16A. Des moyens de guidage 16E, par exemple une ou plusieurs encoches, peuvent être disposés sur une portion du pourtour de la joue fixe 16A afin de guider le fil de bobinage 25. De préférence la ou les encoches 16E ont une forme adaptée, en principe tridimensionnelle, afin de guider correctement et avec sûreté le fil lors de son arrivée sur le bobinage et lors de son retrait.A second embodiment of a tool 1 according to the invention is shown in Figures 3 and 4 where it is applied to the manufacture of a coil 24 without a core to which is added an electronic circuit 20. For this form of execution of the holding tool, the recess 10B in which the circuit 20 is housed, maintains said circuit on three lateral faces, while an extension of the movable spout 11 comes to hold the fourth lateral face. As can be seen in FIG. 4, the thickness of the extension of the movable spout 11 coming to bear on the circuit 20 is approximately equal to that of the circuit, so that the bottom of the circuit 20 can rest on a bottom part plane of housing 10B. In this embodiment, the movable spout 11 only serves to maintain the circuit 20 in its housing by means of its extension. In the case of making an air coil, that is to say without a core, it is necessary to have a false core as shown for example at 16, consisting of a first fixed cheek 16A, fixed at the end of the spout 10, a second movable cheek 16B, a coil bottom 16C, of section not necessarily circular, fixed either to the fixed cheek 16A, or to the fixed cheek 16B and of fastening means 16D for securing the movable cheek 16B and the coil bottom 16C to the fixed cheek 16A. Guide means 16E, for example one or more notches, can be arranged on a portion of the periphery of the fixed cheek 16A in order to guide the winding wire 25. Preferably the notch or notes 16E have a suitable shape, in principle three-dimensional , in order to guide the wire correctly and safely when it arrives on the winding and when it is removed.

A part les modifications mentionnées ci-dessus, l'outil 1 comporte encore une autre modification par rapport à la première forme d'exécution décrite plus haut. On remarque sur la figure que, au-lieu des deux picots de guidage 13 et 14 de la figure 1, l'outil 1 représenté ici ne comporte qu'un seul picot de guidage 17 servant à guider le fil 25 aussi bien lors de son arrivée sur l'outil 1 que lors de son départ. Afin que le guidage soit correct, et que les deux portions de fil surplombant les pistes métalliques 21 et 22 soient parallèles, le diamètre du picot 17 sera de préférence égal à l'entraxe entre les deux pistes métalliques 21 et 22.Apart from the changes mentioned above, tool 1 has yet another modification compared to the first embodiment described above. Note in the figure that, instead of the two guide pins 13 and 14 of Figure 1, the tool 1 shown here has only one guide pin 17 used to guide the wire 25 as well during its arrival on tool 1 only when it left. So that the guidance is correct, and so that the two portions of wire overhanging the metal tracks 21 and 22 are parallel, the diameter of the pin 17 will preferably be equal to the distance between the two metal tracks 21 and 22.

L'opération de bobinage est effectuée de manière semblable à ce qui a été décrit précédemment, le fil 25 étant amené sur l'outil 1 par derrière le picot 17, pour passer ensuite par dessus la piste métallique 21 du circuit 20, puis par l'encoche ou la première encoche 16E pour être ensuite bobiné autour du fond de bobine 16C, entre les deux joues 16A et 16B, puis être retiré par l'encoche ou la deuxième encoche 16E, pour passer par dessus la piste métallique 22 puis par derrière le picot 17. Lorsque les soudures sont faites sur les pistes métalliques 21 et 22, que des moyens de collage ou de fixation des spires du bobinage 24 ont été utilisés afin de solidariser les spires entre elles et que les extrémités des fils disposées respectivement avant la soudure de la piste 21 et après celle de la piste 22 aient été arrachées, il suffit de retirer la joue mobile 16B en agissant sur les moyens de fixation 16D, puis de retirer l'ensemble constitué du bobinage 24 auquel le circuit 20 est fixé par le moyen des deux extrémités de fils de bobinage soudées aux pistes 21 et 22. Ces dernières opérations peuvent être réalisées manuellement ou par des moyens automatiques. Il est ensuite possible, par des moyens mécaniques ou manuellement, de rabattre le circuit 20 dans le même plan que le bobinage 24, éventuellement à l'intérieur de l'espace vide disposé à l'intérieur du bobinage 24.The winding operation is carried out in a similar manner to what has been described above, the wire 25 being brought to the tool 1 from behind the pin 17, then passing over the metal track 21 of the circuit 20, then through the '' or the first notch 16E to be then wound around the coil bottom 16C, between the two cheeks 16A and 16B, then be removed by the notch or the second notch 16E, to pass over the metal track 22 then from behind the pin 17. When the welds are made on the metal tracks 21 and 22, that means for bonding or fixing the turns of the winding 24 have been used in order to secure the turns together and that the ends of the wires disposed respectively before the welding of track 21 and after that of track 22 have been torn off, it suffices to remove the movable cheek 16B by acting on the fixing means 16D, then to remove the assembly consisting of the winding 24 to which the circuit 20 is fixed by means of the two ends of the winding wires welded to the tracks 21 and 22. These latter operations can be carried out manually or by automatic means. It is then possible, by mechanical means or manually, to fold the circuit 20 in the same plane as the winding 24, possibly inside the empty space arranged inside the winding 24.

La figure 5 montre encore une autre forme d'exécution d'un outil 1, prévu pour disposer simultanément plusieurs circuits 20, 20A... sur un bobinage 24. Dans ce cas, le logement 10B prévu dans le bec fixe 10 est dimensionné pour recevoir plusieurs circuits, deux dans le cas représentés, disposés les uns derrière les autres sur l'axe longitudinal principal de l'outil 1. Des moyens d'écartement 10D, éventuellement escamotables, peuvent être prévus dans ledit logement afin qu'un espace libre subsiste entre les circuits. C'est un avantage de la forme d'exécution de l'outil 1 ne comportant qu'un seul picot de guidage 17, d'avoir une portion dudit outil par dessus lequel les extrémités des fils 25 entrant et sortant du bobinage sont disposés parallèlement entre eux. En disposant plusieurs circuits 20,20A,.. sur cette portion d'outil, il est donc facile de faire passer le fil de bobinage successivement par dessus plusieurs pistes métalliques 21, 21A,... lors de l'amenée du fil puis à nouveau sur plusieurs pistes 22, 22A,... lors de son retrait.FIG. 5 shows yet another embodiment of a tool 1, intended to simultaneously dispose several circuits 20, 20A ... on a coil 24. In this case, the housing 10B provided in the fixed spout 10 is dimensioned for receive several circuits, two in the case shown, arranged one behind the other on the main longitudinal axis of the tool 1. Spacing means 10D, possibly retractable, can be provided in said housing so that a free space remains between circuits. It is an advantage of the embodiment of the tool 1 comprising only a single guide pin 17, to have a portion of said tool over which the ends of the wires 25 entering and leaving the winding are arranged in parallel between them. By having several circuits 20,20A, .. on this portion of tool, it is therefore easy to pass the winding wire successively over several metal tracks 21, 21A, ... when feeding the wire and then new on several tracks 22, 22A, ... when it was withdrawn.

L'outil 1 est ici représenté pour être utilisé pour réaliser un bobinage 24 sur un noyau 26 comportant un fond de noyau et deux joues. Ce noyau 26 peut être fait en n'importe quel matériau selon l'usage qui en sera fait, il peut être en matériau synthétique, magnétique ou non, rigide ou souple. Vu que de préférence le fond de noyau est creux, un tenon 18 peut être prévu sur l'extrémité du bec 10, disposé selon l'axe principal de l'outil 1, et sur lequel il est possible d'enfiler le noyau 26. Des moyens supplémentaires de guidage du fil 25 pour le disposer convenablement sur le noyau 26 peuvent être prévus, par exemple deux ou quatre picots 19 éventuellement profilés, disposés à l'extrémité du bec 10 ou une ou deux rainures 26A de forme adaptée, disposées sur une portion de la joue du noyau 26 en contact avec le bec 10.The tool 1 is here shown to be used for making a coil 24 on a core 26 having a core bottom and two cheeks. This core 26 can be made of any material depending on the use to be made of it, it can be made of synthetic material, magnetic or not, rigid or flexible. Since the core bottom is preferably hollow, a tenon 18 can be provided on the end of the spout 10, arranged along the main axis of the tool 1, and on which it is possible to thread the core 26. Additional means for guiding the wire 25 to arrange it properly on the core 26 can be provided, for example two or four pins 19 possibly profiled, arranged at the end of the spout 10 or one or two grooves 26A of suitable shape, arranged on a portion of the cheek of the core 26 in contact with the spout 10.

La manière d'effectuer le bobinage 24 et les soudures sur les circuits est absolument semblable à ce qui a été décrit précédemment.The manner of carrying out the winding 24 and the soldering on the circuits is absolutely similar to what has been described previously.

Différentes formes d'exécution de l'outil de maintien ont été décrites, pour l'exécution de différentes formes d'exécution de bobinages. Il est bien entendu que certaines des variantes décrites sont généralement indépendantes entre elles et qu'il est possible de choisir celle qui s'adapte le mieux aux besoins. Par exemple les extrémités des becs fixes et mobiles de la figure 1 sont particulièrement adaptées pour de petits noyaux cylindriques, alors que les modes de fixation de la bobine par un tenon 18 comme sur la figure 5 ou par un faux corps de bobine 16 comme sur la figure 3, dépendent essentiellement du type de bobinage à réaliser. De même la forme d'exécution selon laquelle les moyens de guidage ne sont constitués que d'un seul picot 17 comme à la figure 5 est particulièrement adaptée aux cas où on a un composant comportant plus de un circuit 20. Par contre le mode de maintien du circuit 20, avec ou sans ressort 15 peut être choisi pour n'importe quelle forme d'exécution. Les moyens de guidage auxiliaires, picots 19 et/ou rainures profilées 16E ou 26A sont choisis selon les besoins.Different embodiments of the holding tool have been described, for the execution of different embodiments of windings. It is understood that some of the variants described are generally independent of each other and that it is possible to choose the one which best adapts to the needs. For example, the ends of the fixed and movable spouts of FIG. 1 are particularly suitable for small cylindrical cores, while the methods of fixing the coil by a lug 18 as in FIG. 5 or by a false coil body 16 as in Figure 3, essentially depend on the type of winding to achieve. Similarly, the embodiment according to which the guide means consist only of a single pin 17 as in FIG. 5 is particularly suitable for cases where there is a component comprising more than one circuit 20. On the other hand, the mode of maintenance of the circuit 20, with or without spring 15 can be chosen for any embodiment. The auxiliary guide means, pins 19 and / or profiled grooves 16E or 26A are chosen as required.

On voit donc que par le procédé et l'outil selon l'invention, il est possible de réaliser un composant selon l'invention constitué d'un bobinage de fil fin de n'importe quel type connu, relié à un ou plusieurs circuits électroniques, la caractéristique commune à tous ces composants étant que, à ce stade de la fabrication, le bobinage et le ou les circuits ne sont maintenus mécaniquement entre eux que par les fils de connexion qui les relient. Cet effet est possible uniquement grâce à la très faible masse du circuit électronique et à la résistance mécanique des fils de liaison qui est suffisante malgré le très faible diamètre desdits fils.It can therefore be seen that by the method and the tool according to the invention, it is possible to produce a component according to the invention consisting of a winding of fine wire of any known type, connected to one or more electronic circuits , the characteristic common to all these components being that, at this stage of manufacture, the winding and the circuit (s) are not mechanically held together only by the connecting wires which connect them. This effect is only possible thanks to the very low mass of the electronic circuit and the mechanical resistance of the connecting wires which is sufficient despite the very small diameter of said wires.

Un autre avantage du procédé et de l'outil selon l'invention est que l'opération de soudure du fil fin sur les pistes métalliques peut se faire dans un plan parallèle à l'axe de la bobine, généralement dans un plan horizontal; pour les machines de bobinage usuelles, ceci facilite l'opération de soudage. Rien n'empêche toutefois de disposer de manière analogue le ou les circuits 20 selon un plan vertical, pour le cas où on dispose d'une machine effectuant les soudures selon un plan vertical.Another advantage of the method and of the tool according to the invention is that the operation of welding the fine wire onto the metal tracks can be done in a plane parallel to the axis of the coil, generally in a horizontal plane; for conventional winding machines, this facilitates the welding operation. However, there is nothing to prevent analogous arrangement of the circuit (s) 20 along a vertical plane, in the case where there is a machine performing the welds along a vertical plane.

On mentionne dans la description un ou plusieurs circuits électroniques 20, 20A,...; il peut s'agir comme mentionné plus haut, soit d'un circuit électronique intégré complet miniaturisé ou alors d'un simple élément électronique, comme par exemple une capacité ou même d'un circuit imprimé miniature. Dans le cas où plusieurs circuits sont assemblés, on peut avoir par exemples des circuits identiques ou différents ou un circuit et un élément électronique ou encore des éléments électroniques identiques ou différents. Les caractéristiques communes à ces pièces sont des dimensions et une masse très faibles, ainsi que le fait que deux pistes métalliques de contact sont accessibles sur une face de chacune desdites pièces.One or more electronic circuits 20, 20A, ... are mentioned in the description; as mentioned above, it may be either a complete miniaturized integrated electronic circuit or else a simple electronic element, such as for example a capacitor or even a miniature printed circuit. In the case where several circuits are assembled, it is possible for example to have identical or different circuits or a circuit and an electronic element or even identical or different electronic elements. The characteristics common to these parts are very small dimensions and mass, as well as the fact that two metallic contact tracks are accessible on one face of each of said parts.

Généralement les composants 2 constitués d'un bobinage relié à un ou plusieurs circuits ne peuvent pas être employés tels quels mais doivent être conditionnés. Par exemple, le bobinage miniature 24 relié au circuit 20, tel que représenté à la figure 1, doit être considéré comme un semi-produit, soit un composant selon l'invention comme montré à la figure 6, constitué d'un noyau 23 sur lequel le bobinage 24 est réalisé, les deux extrémités des fils de bobinage étant soudées sur les pistes métalliques 21 et 22 d'un circuit électronique 20. La seule liaison entre le circuit électronique 20 et le noyau 23 est faite par l'intermédiaire desdites extrémités des fils du bobinage qui assurent ainsi tant la liaison électrique entre les deux éléments que la liaison mécanique entre ces deux mêmes éléments. Vu la très faible masse du circuit électronique 20, la rigidité mécanique offerte par les deux fils de liaison est suffisante pour soutenir l'un ou l'autre desdits éléments lorsque le composant complet est maintenu par l'autre desdits éléments, le noyau 23 ou le circuit 20. Vu le léger espacement prévu entre eux lors du posage du circuit 20 et du noyau 23 sur l'outil 1, il n'existe aucune contrainte de traction sur les fils due à un mauvais positionnement de l'un des éléments par rapport à l'autre.Generally, the components 2 consisting of a winding connected to one or more circuits cannot be used as such but must be conditioned. For example, the miniature winding 24 connected to the circuit 20, as shown in FIG. 1, must be considered as a semi-finished product, ie a component according to the invention as shown in FIG. 6, consisting of a core 23 on which the winding 24 is produced, the two ends of the winding wires being welded on the metal tracks 21 and 22 of an electronic circuit 20. The only connection between the electronic circuit 20 and the core 23 is made by means of said ends of the wires of the winding which thus ensure both the electrical connection between the two elements and the mechanical connection between these same two elements. Given the very low mass of the electronic circuit 20, the mechanical rigidity offered by the two connecting wires is sufficient to support one or the other of said elements when the complete component is held by the other of said elements, the core 23 or the circuit 20. Given the slight spacing provided between them when fitting the circuit 20 and the core 23 on the tool 1, there is no tensile stress on the wires due to improper positioning of one of the elements by compared to each other.

Il est évident que dans de telles dimensions, la liaison mécanique assurée par les fils de liaison ne peut être qu'une liaison temporaire et ne saurait être une liaison permanente; elle est néanmoins suffisante pour qu'il soit possible de supprimer une première étape de fixation du circuit électronique 20 sur le noyau 23, la suppression de ladite étape du procédé de fabrication permettant un gain de temps et pécunier substantiel.It is obvious that in such dimensions, the mechanical connection provided by the connection wires can only be a temporary connection and cannot be a permanent connection; it is nevertheless sufficient for it to be possible to omit a first step of fixing the electronic circuit 20 to the core 23, the abolition of said step of the manufacturing process allowing a substantial saving of time and money.

Pour terminer la fabrication du composant complet selon l'invention, il suffit maintenant d'encapsuler ledit composant afin de le protéger des chocs mécaniques et des salissures, d'assurer une liaison mécanique durable entre les deux éléments et de lui donner des dimensions permettant de mieux le manipuler. Plusieurs possibilités existent à cet effet; à la figure 6A le composant a été introduit dans un mini tube de verre 30 fermé à une extrémité, contenant une certaine quantité d'un liquide 31 capable de durcir, par exemple par polymérisation sous l'effet d'une exposition à un rayonnement UV, ou alors un liquide à deux composants durcissant lorsque les deux composants sont réunis, afin de fixer les deux éléments entre eux et avec le tube 30. Le tube 30 est ensuite scellé hermétiquement par fusion ou par un produit de scellement 32. Selon une autre forme d'exécution du produit terminé visible à la figure 6B, les deux éléments du composant 2 sont simplement disposés sur un support rigide 33 sur lequel ils sont collés; il sont solidarisés l'un avec l'autre par l'intermédiaire dudit support rigide. L'assemblage peut ou non être recouvert, partiellement ou complètement, d'un enduit de protection. Selon une troisième forme d'exécution visible à la figure 6C, le composant 2 est simplement recouvert d'un enduit d'enrobage 34 qui assure sa tenue mécanique. Une quatrième forme d'exécution possible du composant terminé est montrée à la figure 6D; dans ce cas, le composant a été placé entre deux portions indépendantes 35A et 35B d'une feuille souple en matériau synthétique, les bords libres 36 desdites portions étant ensuite scellés ensemble de n'importe quelle manière convenable, par effet thermique, par collage, par sertissage, etc. L'enveloppe selon cette forme d'exécution peut être conçue à partir d'une feuille repliée afin d'obtenir les deux portions 35A et 35B, seuls trois bords libres 36 étant scellés, ou alors de deux portions séparées 35A et 35B dont les quatre bords libres 36 sont scellés, ou encore d'un tube constitué d'une feuille enroulée et déjà fermée sur une génératrice, les deux bords libres 36 à sceller étant constitués par les extrémités du tube. Afin que le composant ne puisse bouger entre les deux portions de feuilles 35A et 35B, le scellement a lieu au plus près du composant, ou alors le vide est fait entre les deux portions de feuilles avant scellement, afin que le composant soit maintenu fermement dans son enveloppe. Bien que la feuille formant enveloppe soit constituée d'un matériau mince et souple, les faibles dimensions du composant, respectivement de son enveloppe, font que le composant est maintenu dans son enveloppe d'une manière suffisamment rigide.To complete the manufacture of the complete component according to the invention, it is now sufficient to encapsulate said component in order to protect it from mechanical impact and dirt, to ensure a lasting mechanical connection between the two elements and to give it dimensions allowing better handle it. Many possibilities exist for this purpose; in FIG. 6A, the component was introduced into a mini glass tube 30 closed at one end, containing a certain amount of a liquid 31 capable of hardening, for example by polymerization under the effect of exposure to UV radiation , or a two-component liquid that hardens when the two components are combined, in order to fix the two elements together and with the tube 30. The tube 30 is then hermetically sealed by fusion or by a sealant 32. According to another embodiment of the finished product visible in FIG. 6B, the two elements of component 2 are simply placed on a rigid support 33 on which they are glued; they are secured to each other via said rigid support. The assembly may or may not be covered, partially or completely, with a protective coating. According to a third embodiment visible in FIG. 6C, the component 2 is simply covered with a coating coating 34 which ensures its mechanical strength. A fourth possible embodiment of the completed component is shown in Figure 6D; in this case, the component has been placed between two independent portions 35A and 35B of a flexible sheet of synthetic material, the free edges 36 of said portions then being sealed together in any suitable manner, by thermal effect, by bonding, by crimping, etc. The envelope according to this embodiment can be designed from a folded sheet in order to obtain the two portions 35A and 35B, only three free edges 36 being sealed, or else two separate portions 35A and 35B including the four free edges 36 are sealed, or else a tube made of a rolled up sheet and already closed on a generator, the two free edges 36 to be sealed being formed by the ends of the tube. So that the component cannot move between the two sheet portions 35A and 35B, the sealing takes place as close as possible to the component, or else a vacuum is created between the two sheet portions before sealing, so that the component is held firmly in its envelope . Although the envelope sheet is made of a thin and flexible material, the small dimensions of the component, respectively of its envelope, mean that the component is held in its envelope in a sufficiently rigid manner.

Un avantage de cette dernière forme d'exécution de l'enveloppe d'un composant est visible à la figure 6E, où on voit une pluralité de composants 2 assemblés en chaîne. Les composants 2 sont disposés côte à côte avec un espace libre entre eux, entre deux bandes souples 35A et 35B, des scellements 36, de préférence des soudures sont faites autour du composant afin de sceller le composant 2 à l'intérieur d'une enveloppe étanche constituée de deux portions des bandes 35A et 35B reliées par les scellements 36. Ainsi, la mise sous enveloppe des composants peut se faire par des moyens automatiques, le stockage des pièces terminées en est facilité puisqu'il est plus facile de stocker une bande comportant un nombre connu d'éléments plutôt que ce même nombre d'éléments individuels; il est très facile d'obtenir un ou plusieurs éléments terminés individuels puisqu'il suffit alors de couper la bande, manuellement ou par des moyens automatiques, entre deux soudures consécutives situées dans l'espace séparant deux composants. Des moyens d'accrochage ou de fixation individuels peuvent facilement être ajoutés à des enveloppes constituées de feuilles minces, par exemple un ou plusieurs trous 37 aménagés sur une ou plusieurs portions de la bande disposée de préférence hors de la partie scellée, permettant ainsi de fixer chaque composant à n'importe quelle autre structure.An advantage of this latter embodiment of the envelope of a component is visible in FIG. 6E, where we see a plurality of components 2 assembled in a chain. Components 2 are arranged side by side with a free space between them, between two flexible strips 35A and 35B, seals 36, preferably welds are made around the component in order to seal component 2 inside an envelope watertight consisting of two portions of the strips 35A and 35B connected by the seals 36. Thus, the enveloping of the components can be done by automatic means, the storage of the finished parts is facilitated since it is easier to store a strip having a known number of elements rather than the same number of individual elements; it is very easy to obtain one or more individual finished elements since it then suffices to cut the strip, manually or by automatic means, between two consecutive welds located in the space separating two components. Individual hooking or fixing means can easily be added to envelopes made of thin sheets, for example one or more holes 37 arranged on one or more portions of the strip preferably arranged outside the sealed part, thus making it possible to fix each component to any other structure.

En ce qui concerne les autres formes d'exécution de bobinage décrites, les moyens de rigidification du composant seront adaptés au type de bobine et à son utilisation; il seront généralement moins critiques que pour la première forme d'exécution vue plus haut, de par les dimensions plus importantes de la bobine. Par exemple, pour la bobine à air obtenue par l'outil des figures 3 et 4, qui pourrait être destinée à être introduit dans une enveloppe en forme et aux dimensions d'une carte de crédit, le ou les circuits électroniques seront tout d'abord rabattus dans le plan du bobinage, éventuellement à l'intérieur de l'espace libre à l'intérieur du bobinage, ceci manuellement ou par des moyens mécaniques, par passage dans une glissière de guidage de forme appropriée ou par jet d'air, puis le tout sera enrobé entre deux feuilles synthétiques, de préférence semi-rigides ou rigides, comme on le voit à la figure 7 où la feuille d'enrobage supérieure est ôtée afin de distinguer le positionnement du composant.As regards the other embodiments of winding described, the means of stiffening the component will be adapted to the type of coil and to its use; they will generally be less critical than for the first embodiment seen above, due to the larger dimensions of the coil. For example, for the air coil obtained by the tool of FIGS. 3 and 4, which could be intended to be introduced into an envelope in the shape and dimensions of a credit card, the electronic circuit or circuits will be of first folded down in the plane of the winding, possibly inside the free space inside the winding, this manually or by mechanical means, by passing through a guide slide of suitable shape or by air jet, then the whole will be coated between two synthetic sheets, preferably semi-rigid or rigid, as can be seen in FIG. 7 where the upper coating sheet is removed in order to distinguish the positioning of the component.

Pour le semi-produit fabriqué par l'outil selon la figure 5, il suffit généralement comme précédemment de replier les fils de connexion afin d'amener le ou les circuits 20,20A... dans un plan parallèle à la joue de la bobine 26 comme représenté à la figure 8. Selon les besoins, il est ensuite possible de fixer le ou les circuits à ladite joue, par collage par exemple. Si le noyau de bobine comporte un logement de grandeur suffisante, il est aussi possible d'y rabattre le ou les circuits et d'éventuellement les y coller afin d'assurer leur protection mécanique.For the semi-finished product produced by the tool according to FIG. 5, it is generally sufficient as before to fold the connection wires in order to bring the circuit (s) 20.20A ... in a plane parallel to the cheek of the coil 26 as shown in FIG. 8. According to requirements, it is then possible to fix the circuit (s) to said cheek, by gluing for example. If the coil core has a housing of sufficient size, it is also possible to fold down the circuit (s) there and possibly stick them to it in order to ensure their mechanical protection.

Comme on le voit sur toutes les figures, la position relative du circuit électronique 20 et du bobinage 24 n'est pas importante, le jeu entre ces deux éléments étant seulement limité par la longueur disponible des fils de liaison. Par la suite ce composant fera partie d'un circuit électronique plus important, son excitation étant assurée par champ électro-magnétique.As can be seen in all the figures, the relative position of the electronic circuit 20 and the winding 24 is not important, the play between these two elements being only limited by the available length connecting wires. Subsequently this component will be part of a larger electronic circuit, its excitation being provided by electromagnetic field.

Diverses variantes des produits mentionnés plus haut peuvent être envisagées; en particulier il n'est pas absolument nécessaire que les éléments aient les dimensions et les masses mentionnées; il suffit pour répondre aux caractéristiques de l'invention que la tenue mécanique que peuvent offrir les fils de liaison soit suffisante afin d'assurer une liaison mécanique temporaire entre des éléments dont les dimensions et masses peuvent être nettement plus importants qu'indiqué. Par ailleurs comme indiqué précédemment, le circuit électronique dont il est question peut revêtir différentes formes; il peut aussi s'agir d'un circuit intégré, d'un simple composant électronique discret ou d'un circuit imprimé. D'autre part, seules quelques possibilités de terminaison du composant ont été décrites, il est bien entendu que ledit composant peut être terminé de bien d'autres manières selon les besoins.Various variants of the products mentioned above can be envisaged; in particular it is not absolutely necessary that the elements have the dimensions and the masses mentioned; it suffices to meet the characteristics of the invention that the mechanical strength which the connecting wires can offer is sufficient to ensure a temporary mechanical connection between elements the dimensions and masses of which can be much greater than indicated. Furthermore, as indicated above, the electronic circuit in question can take different forms; it can also be an integrated circuit, a simple discrete electronic component or a printed circuit. On the other hand, only a few termination possibilities of the component have been described, it is understood that said component can be terminated in many other ways as required.

Ainsi, par le procédé et l'outil de maintien selon l'invention, il est possible d'obtenir un semi-produit et un produit terminé selon l'invention, ayant les même qualités de fonctionnement que ceux de l'art antérieur mais dont la fabrication est nettement simplifiée dans la mesure où on évite les salissures due à la colle sur l'outil ou la machine et que d'autre part il n'est plus nécessaire de réaliser une opération d'assemblage de deux ou plusieurs éléments nécessitant une grand précision, ladite précision étant reportée sur la confection de l'outil selon l'invention.Thus, by the method and the holding tool according to the invention, it is possible to obtain a semi-finished product and a finished product according to the invention, having the same operating qualities as those of the prior art but of which the manufacturing is clearly simplified insofar as dirt is avoided due to the adhesive on the tool or the machine and on the other hand it is no longer necessary to carry out an assembly operation of two or more elements requiring a high precision, said precision being transferred to the making of the tool according to the invention.

Claims (24)

  1. Process for producing a winding (24) and for fixing said winding to at least one electronic circuit (20, 20A, ...), characterized in that it comprises particularly the following steps:
    - placement of at least one electronic circuit comprising at least two accessible metal paths (21, 22, 21A, 22B, ...), on a holding tool (1),
    - bringing a winding wire (25) on one side of guide means (13; 17) disposed on one face of said tool, then above a first metal path (21, 21A, ...) of the electronic circuit or circuits,
    - producing the winding with said winding wire,
    - withdrawal of the winding wire above a second metal path (22, 22A, ...) of the electronic circuit or circuits, then by another side of said guide means (14; 17),
    - soldering each of the portions of wires situated directly above each of said metal paths to the corresponding metal path,
    - opening of the tool and withdrawal of the component made up of said electronic circuit or circuits connected to each other and to the winding solely by the two winding end wires soldered on the metal paths of said electronic circuit or circuits.
  2. Process according to claim 1, characterized in that the winding is carried out with the aid of a flyer.
  3. Process according to one of the claims 1 or 2, characterized in that the winding is carried out about a core (23; 26), held by said tool independently of said electronic circuit or circuits.
  4. Process according to one of the claims 1 or 2, characterized in that the winding is carried out about a false core (16C) fixed to said tool.
  5. Process according to one of the claims 3 or 4, characterized in that the soldered joints are carried out when the metal paths are disposed in a plane parallel to the axis of the winding.
  6. Process according to claim 5, characterized in that the withdrawal of the component is effected by seizing the winding or the wound core.
  7. Process according to claim 5, characterized in that the withdrawal of the component is effected by seizing at least one electronic circuit.
  8. Holding tool for the execution of a process according to one of the preceding claims, characterized in that it comprises
       a first nose (10) and a second nose (11) movable with respect to the first nose, a space (12) existing between two internal faces (10A, 11A) of the said noses when the latter are in a near position,
       the said noses including
       the first positioning means (10B, 10C; 10D) for at least one electronic circuit (20, 20A) provided in the vicinity of the end before the first nose (10), the upper surface of the said electronic circuit or circuits being flush with the upper surface of the said first nose,
       holding means (15; 11) for the said electronic circuit or circuits on the inside of the said positioning means,
       second means of positioning and of holding (10C, 11B; 16; 18) of a core of a coil (23; 26) or a winding (24),
       the said first and second positioning means being arranged so that a space exists between the said electronic circuits and between the electronic circuit close to the core of the coil or of the winding and the said core of the coil or of the said winding,
       and the means of guiding a winding wire.
  9. Holding tool according to claim 8, characterized in that the guide means are composed of a first point (13) disposed on a rear portion of the first nose of the said tool and of a second point (14) disposed on a rear portion of the second nose of the said tool in order to guide the wire above a first metal path of an electronic circuit, then after the winding has been carried out, above a second metal path of said electornic circuit.
  10. Holding tool according to claim 8, characterized in that the guide means are composed of a single point (17) disposed on a rear portion of a nose of the said tool in order to guide the wire above one or more first metal paths of one or more electronic circuits, then after the winding has been carried out, above one or more second metal paths of said electronic circuit or circuits.
  11. Holding tool according to one of the claims 9 or 10, characterized in that it further comprises other guide means (19, 26A) disposed at the entry and at the exit of the winding.
  12. Component produced particularly in the course of a process according to one of the claims 1 to 7, characterized in that the electronic circuit or circuits and the winding are connected only by the ends of the winding wires soldered on the metal paths of said electronic circuit or circuits.
  13. Component according to claim 12, characterized in that it is subsequently inserted into a glass tube (30) to be sealed there.
  14. Component according to claim 12, characterized in that it is subsequently covered partially or totally by a fixing coating (34).
  15. Component according to claim 12, characterized in that it is subsequently fixed on a rigid support (33).
  16. Component according to claim 12, characterized in that it is subsequently placed between two portions (35A, 35B) of at least one thin sheet of synthetic material forming an envelope, the free edges (36) of said portions of sheet subsequently being sealed together.
  17. Component according to claim 12, characterized in that a plurality of said components are disposed side by side, a free space existing between each of said components, between two parallel strips (35A, 35B) of a thin synthetic material, a sealing (36) of the two strips being produced about each of said components in order to form an envelope.
  18. Component according to claim 17, characterized in that each component is separated from the others by cutting said strips along a line situated between two consecutive sealings disposed in said free space.
  19. Component according to one of the claims 17 to 18, characterized in that its envelope comprises fixing means (37) disposed outside of the sealed part of the envelope.
  20. Component according to claim 12, characterized in that the electronic circuit or circuits are forced back into the plane of the winding.
  21. Component according to one of the claims 12 or 20, characterized in that the electronic circuit or circuits are forced back into the space disposed within the winding.
  22. Component according to claim 20 or 21, characterized in that the component is intercalated between two sheets of synthetic material assembled together.
  23. Component according to claim 12, characterized in that the electronic circuit or circuits are forced back against a flange of the winding core (26).
  24. Component according to claim 23, characterized in that the electronic circuit or circuits are glued against the flange of the winding core.
EP92904987A 1991-02-25 1992-02-20 Method for fixing a winding to an electronic circuit Expired - Lifetime EP0573469B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH55591 1991-02-25
CH555/91 1991-02-25
PCT/EP1992/000363 WO1992015105A1 (en) 1991-02-25 1992-02-20 Method for fixing a winding to an electronic circuit

Publications (2)

Publication Number Publication Date
EP0573469A1 EP0573469A1 (en) 1993-12-15
EP0573469B1 true EP0573469B1 (en) 1994-07-27

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EP92904987A Expired - Lifetime EP0573469B1 (en) 1991-02-25 1992-02-20 Method for fixing a winding to an electronic circuit

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US (5) US5572410A (en)
EP (1) EP0573469B1 (en)
JP (1) JPH0817132B2 (en)
AT (1) ATE109302T1 (en)
AU (1) AU655455B2 (en)
BR (1) BR9205671A (en)
CA (1) CA2101850C (en)
DE (1) DE69200282C5 (en)
DK (1) DK0573469T3 (en)
ES (1) ES2059215T3 (en)
WO (1) WO1992015105A1 (en)

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EP1786004A2 (en) 2005-11-11 2007-05-16 Sokymat Automotive GmbH Method of manufacturing an electronic component comprising an integrated circuit and a winding assembly
EP1793395A1 (en) 2005-11-11 2007-06-06 Sokymat Automotive GmbH Method of manufacturing an electronic component comprising an integrated circuit and a winding assembly
EP1786004A3 (en) * 2005-11-11 2012-07-11 SMARTRAC TECHNOLOGY GERMANY GmbH Method of manufacturing an electronic component comprising an integrated circuit and a winding assembly
EP1793399A1 (en) * 2005-12-05 2007-06-06 Sokymat Automotive GmbH Holding tool for fixing an electronic component and circular table manufacturing unit
EP1793398A1 (en) * 2005-12-05 2007-06-06 Sokymat Automotive GmbH Holding tool for fixing an electronic component and circular table manufacturing unit
US7789289B2 (en) 2005-12-05 2010-09-07 Smartrac Technology Germany Gmbh Holding tool for fixing an electronic component and circular table manufacturing unit

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ES2059215T3 (en) 1994-11-01
EP0573469A1 (en) 1993-12-15
US20010010117A1 (en) 2001-08-02
US20020189080A1 (en) 2002-12-19
US5634261A (en) 1997-06-03
US5572410A (en) 1996-11-05
BR9205671A (en) 1994-02-17
DE69200282D1 (en) 1994-09-01
CA2101850A1 (en) 1992-08-26
US5790387A (en) 1998-08-04
WO1992015105A1 (en) 1992-09-03
JPH06505365A (en) 1994-06-16
AU655455B2 (en) 1994-12-22
DE69200282T2 (en) 1994-12-22
JPH0817132B2 (en) 1996-02-21
AU1256992A (en) 1992-09-15
CA2101850C (en) 1999-06-29
DK0573469T3 (en) 1994-11-28
DE69200282C5 (en) 2006-01-26
ATE109302T1 (en) 1994-08-15

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