EP0842519B1 - Winding device for forming an electrical coil on a magnetic air gap circuit - Google Patents

Winding device for forming an electrical coil on a magnetic air gap circuit Download PDF

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Publication number
EP0842519B1
EP0842519B1 EP96921862A EP96921862A EP0842519B1 EP 0842519 B1 EP0842519 B1 EP 0842519B1 EP 96921862 A EP96921862 A EP 96921862A EP 96921862 A EP96921862 A EP 96921862A EP 0842519 B1 EP0842519 B1 EP 0842519B1
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EP
European Patent Office
Prior art keywords
coil
wire guide
gap
magnetic circuit
air
Prior art date
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Expired - Lifetime
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EP96921862A
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German (de)
French (fr)
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EP0842519A1 (en
Inventor
Frédéric CATTANEO
Régis Mentzer
Pierre Strubin
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Liaisons Electroniques Mecaniques LEM SA
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Liaisons Electroniques Mecaniques LEM SA
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    • 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
    • H01F41/08—Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores
    • 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
    • H01F41/082—Devices for guiding or positioning the winding material on the former

Definitions

  • the present invention relates in particular to a device for winding to essentially form an electric coil cylindrical on at least one substantially straight branch of a magnetic circuit having an air gap, this device comprising at least one rigid wire guide comprising a part input and output part of the wire as well as part elongated intermediate, this intermediate part having dimensions allowing the passage of this intermediate part in the air gap, this device further comprising a device for support for said wire guide and a circuit support device magnetic, arranged so as to have the wire guide and the magnetic circuit, one with respect to the other, a movement of rotation around the axis of the spool and a back and forth movement in the axial direction of the coil.
  • the invention aims to provide a winding device for make coils directly on a magnetic circuit air gap of very short length, and this in particular in a way economical and applicable to mass production.
  • the device according to the invention has the peculiarities described in the characterizing part of the claim 1.
  • Claims 2 to 6 describe embodiments preferential of such a device.
  • the invention also relates to a winding device for form an electric coil on a shaped magnetic circuit toroidal according to claim 7.
  • Fig. 1 shows a magnetic circuit 1 comprising an air gap 2 and a coil 3 formed on a straight branch of circuit 1 around an axis designated by 4.
  • This magnetic circuit is fixed, usual way, on a support device shown schematically in broken lines.
  • a wire guide 6 is arranged so as to pass through the air gap 2 in the operating state illustrated in Fig. 1.
  • This thread guide is mounted on a support 7 which is arranged so that it can be driven in rotation during winding, around an axis aligned with axis 4.
  • the wire guide 6 has an entry portion of the wire 8 near the support 7 and, at its free end, an outlet portion of the wire 9 guiding the wire represented by 10 to bring it to the coil to be formed in a plane perpendicular to the axis 4 thereof. Between these two end parts, the wire guide 6 has a part intermediate 11 whose length is greater than the length of the coil 3 and along which the wire is guided between parts 8 and 9.
  • Fig. 1 also shows a can 12 for feeding the relatively thick wire device, this can being mounted on the support 7 so that it can rotate around an aligned axis with axis 4 in the example shown.
  • the supply of the wire guide 6 can be made from an independent wire reserve, the wire being preferably guided to pass in the axis of rotation, in the occurrence axis 4.
  • Fig. 2 shows the shape of the thread guide 6 in its part intermediate 11 which is delimited in its cross section, by two concentric arcs whose common center is located on axis 4.
  • the wire 10 passes through an open groove between the parts 8 and 9 of the thread guide.
  • Fig. 3 shows in particular the wire guide 6 in top view, the different parts being designated by the same numbers of reference that in Fig. 1.
  • the thread guide 6 has, in its intermediate part passing through the air gap 2, a very small height, its rigidity being ensured by its general shape constituting a cylindrical sector and the shape of its part free end 9.
  • the supports of the magnetic circuit 1 and the wire guide 6 are arranged to make the magnetic circuit and the wire guide two simultaneous relative movements, i.e., a movement of rotation around axis 4, and a translational movement in the longitudinal direction of the thread guide, along the length of the spool 3.
  • the wire guide and the magnetic circuit are moved one by relative to each other in the direction of the axis of the coil, while the thread guide is placed in an angular position in which it found entirely outside the air gap.
  • the intermediate part comprises, respectively, a channel for guiding the wire, or a part open to ends of which the wire is guided through a similar channel to that of FIG. 4.
  • Fig. 6 similarly shows a guide of the wire in a groove at the edge of the intermediate part of the thread guide, while the Fig. 7 shows a part of such a wire guide 6 ', in side view.
  • Figures 8, 9 and 10 relate to an embodiment of a wire guide allowing the winding on a magnetic circuit having an air gap of minimum length.
  • the intermediate part 11 ′ can, in this embodiment, have a height substantially equal to the thickness of the wire 10, this last pass through an 11 "opening throughout the game intermediate 11 '.
  • Wire 10 is guided upstream and downstream of the intermediate part by parts 21 and 22 cooperating with the wire entry and exit parts, 8 'and 9'.
  • Fig. 10 represents this thread guide in top view, analogous parts being designated by the same reference numbers as in the Figures 8, 9 and 1 to 3.
  • Fig. 11 shows a device for simultaneously carrying out two coils, 3 and 3 ', on parallel branches of a circuit magnetic 1 whose air gap is in a plane of symmetry between the two coils.
  • the thread guides 6 and 61 have one of the shapes described above and are driven in rotation, respectively, around the axes 4 and 4 ′ of the coils to be formed. This rotation takes place at the same speed, in the same direction or opposite direction, but with an angular offset of 180 ° when passage in the air gap, so that the wire guides 6 and 61 pass alternately in the air gap 2.
  • the respective supports 7 and 71 and the support 1a of circuit 1 are further arranged to perform a relative movement in the axial direction of the coils.
  • Fig. 12 shows, in front view, the shape that the supports can have 7 and 71 to allow the aforementioned rotations in opposition phase. Such a device makes it possible to reduce by approximately half the total winding time.
  • the present device can also be adapted to the production of coils on magnetic circuits of toroidal shape, the air gap of which may have a relatively short length.
  • a wire guide 62 is arranged with its intermediate part in the air gap 32 of a magnetic circuit 31 to form at least one coil 33 on this circuit, similarly to the case of a circuit with rectilinear branches. In this case, however, the wire guide 62 also performs a pivoting movement in the plane of the circuit 31 around the center of the air gap 32.
  • a second coil, not shown, can also be formed on a diametrically opposite portion of the circuit 31, similarly to that illustrated in FIG. 11. Two extreme positions of the wire guide 62 are shown in FIG. 13 and designated by 62a and 62b.
  • the arrows f 1 , f 2 and f 3 indicate the different components of the movement of this thread guide relative to the circuit 31.
  • the device according to the invention allows coils to be formed at a very high rate in a mass production, so that the cost price of the manufactured part can be lowered considerably compared to that of currently available processes. It can in particular be used in the manufacture of electromagnets, leakage current or voltage transformers, current using a Hall cell placed in the air gap, solenoid valves, relays, contactors or actuators linear or angular.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Electromagnets (AREA)

Abstract

For forming a cylindrical coil (3) on a rectilinear arm of a magnetic circuit (1) having a very small air-gap (2), a wire guide member (6) has a wire inlet portion (8), a wire outlet portion (9) and an elongated intermediary portion (11) arranged for effecting a rotary movement about the axis (4) of the coil (3) and a reciprocating movement in the axial direction of the coil (3). The intermediary portion of the wire guide member has, over a length at least equal to that of the coil to be formed, a height smaller than the length of the air-gap so that it can move through the air-gap in the longitudinal and in the transverse directions.

Description

La présente invention concerne notamment un dispositif de bobinage pour former une bobine électrique essentiellement cylindrique sur au moins une branche sensiblement rectiligne d'un circuit magnétique présentant un entrefer, ce dispositif comportant au moins un guide-fil rigide comprenant une partie d'entrée et une partie de sortie du fil ainsi qu'une partie intermédiaire allongée, cette partie intermédiaire ayant des dimensions permettant le passage de cette partie intermédiaire dans l'entrefer, ce dispositif comportant en outre un dispositif de support dudit guide-fil et un dispositif de support du circuit magnétique, agencés de façon à faire effectuer au guide-fil et au circuit magnétique, l'un par rapport à l'autre, un mouvement de rotation autour de l'axe de la bobine et un mouvement de va-et-vient dans le sens axial de la bobine.The present invention relates in particular to a device for winding to essentially form an electric coil cylindrical on at least one substantially straight branch of a magnetic circuit having an air gap, this device comprising at least one rigid wire guide comprising a part input and output part of the wire as well as part elongated intermediate, this intermediate part having dimensions allowing the passage of this intermediate part in the air gap, this device further comprising a device for support for said wire guide and a circuit support device magnetic, arranged so as to have the wire guide and the magnetic circuit, one with respect to the other, a movement of rotation around the axis of the spool and a back and forth movement in the axial direction of the coil.

Un dispositif de ce type général est décrit dans le brevet US 4,417,699. Ce dispositif connu n'est toutefois utilisable que dans le cas où le circuit magnétique devant porter la bobine présente un entrefer relativement important.A device of this general type is described in the US patent 4,417,699. This known device can however only be used in the case where the magnetic circuit to carry the coil has a relatively large air gap.

De nombreuses applications nécessitent des circuits magnétiques présentant un entrefer de très faible longueur. Dans ces cas, les procédés de bobinage utilisés jusqu'à présent font appel, comme dans le cas de circuits fermés, à des supports de fil auxiliaires sous forme, par exemple, d'un anneau fendu. Alternativement, les bobines sont montées sur des circuits magnétiques feuilletés permettant une déformation temporaire du circuit pour y disposer des bobines préfabriquées. La complexité des procédés connus et les limites de leur application occasionnent des coûts élevés, soit directement, soit indirectement, par l'utilisation de solutions alternatives par rapport à la formation des bobines sur le circuit.Many applications require magnetic circuits having a very short air gap. In these cases, the winding methods used so far call for, like in the case of closed circuits, to auxiliary wire supports in the form, for example, of a split ring. Alternatively, coils are mounted on laminated magnetic circuits allowing a temporary deformation of the circuit to have it prefabricated coils. The complexity of the known processes and the limits of their application cause high costs, ie directly, or indirectly, through the use of solutions alternatives to the formation of coils on the circuit.

L'invention vise à fournir un dispositif de bobinage permettant de réaliser des bobines directement sur un circuit magnétique à entrefer de très faible longueur, et ceci notamment d'une manière économique et applicable à une fabrication en grandes séries.The invention aims to provide a winding device for make coils directly on a magnetic circuit air gap of very short length, and this in particular in a way economical and applicable to mass production.

A cet effet, le dispositif selon l'invention présente les particularités décrites dans la partie caractérisante de la revendication 1.To this end, the device according to the invention has the peculiarities described in the characterizing part of the claim 1.

Les revendications 2 à 6 décrivent des formes de réalisation préférentielles d'un tel dispositif.Claims 2 to 6 describe embodiments preferential of such a device.

L'invention a également pour objet un dispositif de bobinage pour former une bobine électrique sur un circuit magnétique de forme toroïdale selon la revendication 7.The invention also relates to a winding device for form an electric coil on a shaped magnetic circuit toroidal according to claim 7.

D'autres caractéristiques, objectifs et avantages de l'invention ressortiront de la description donnée ci-après de différentes formes de réalisation indiquées à titre d'exemples et illustrées dans le dessin annexé, dans lequel:

  • la Fig. 1 est une vue latérale des éléments essentiels d'un dispositif selon l'invention pour former une bobine sur une branche rectiligne d'un circuit magnétique;
  • la Fig. 2 est une coupe selon la ligne II-II de la Fig. 1;
  • la Fig. 3 est une vue de dessus, partiellement en coupe, selon la ligne III-III de la Fig. 1;
  • les Figures 4 et 5 sont des vues en coupe, similaires à celle de la Fig. 2, montrant des alternatives de réalisation d'un guide-fil pour le dispositif de la Fig. 1;
  • les Figures 6 et 7 sont, respectivement, une vue de face et une vue latérale d'une autre forme d'exécution d'un guide-fil pour le dispositif de la Fig. 1;
  • les Figures 8, 9 et 10 sont, respectivement, une vue de face, partiellement en coupe, selon la ligne VIII-VIII de la Fig. 9, une vue latérale, partiellement en coupe, et une vue de dessus d'une autre forme de réalisation d'un guide-fil pour le dispositif de la Fig. 1;
  • la Fig. 11 est une vue similaire à celle de la Fig. 1, montrant un dispositif pour former simultanément deux bobines sur un même circuit magnétique;
  • la Fig. 12 est une vue, partiellement en coupe, selon la ligne XII-XII de la Fig. 11; et
  • la Fig. 13 est une vue schématique illustrant le fonctionnement d'un dispositif selon l'invention pour former une bobine sur un circuit magnétique toroïdal.
    • Other characteristics, objectives and advantages of the invention will emerge from the description given below of various embodiments indicated by way of examples and illustrated in the appended drawing, in which:
  • Fig. 1 is a side view of the essential elements of a device according to the invention for forming a coil on a straight branch of a magnetic circuit;
  • Fig. 2 is a section along line II-II of FIG. 1;
  • Fig. 3 is a top view, partially in section, along the line III-III of FIG. 1;
  • Figures 4 and 5 are sectional views, similar to that of FIG. 2, showing alternative embodiments of a thread guide for the device of FIG. 1;
  • Figures 6 and 7 are, respectively, a front view and a side view of another embodiment of a thread guide for the device of FIG. 1;
  • Figures 8, 9 and 10 are, respectively, a front view, partially in section, along the line VIII-VIII of FIG. 9, a side view, partially in section, and a top view of another embodiment of a thread guide for the device of FIG. 1;
  • Fig. 11 is a view similar to that of FIG. 1, showing a device for simultaneously forming two coils on the same magnetic circuit;
  • Fig. 12 is a view, partially in section, along the line XII-XII of FIG. 11; and
  • Fig. 13 is a schematic view illustrating the operation of a device according to the invention for forming a coil on a toroidal magnetic circuit.

    • La Fig. 1 montre un circuit magnétique 1 comportant un entrefer 2 et une bobine 3 formée sur une branche rectiligne du circuit 1 autour d'un axe désigné par 4. Ce circuit magnétique est fixé, de manière usuelle, sur un dispositif de support la représenté schématiquement en traits interrompus. Un guide-fil 6 est disposé de façon à passer par l'entrefer 2 à l'état de fonctionnement illustré par la Fig. 1. Ce guide-fil est monté sur un dispositif de support 7 qui est agencé de façon à pouvoir être entraíné en rotation lors du bobinage, autour d'un axe aligné avec l'axe 4.Fig. 1 shows a magnetic circuit 1 comprising an air gap 2 and a coil 3 formed on a straight branch of circuit 1 around an axis designated by 4. This magnetic circuit is fixed, usual way, on a support device shown schematically in broken lines. A wire guide 6 is arranged so as to pass through the air gap 2 in the operating state illustrated in Fig. 1. This thread guide is mounted on a support 7 which is arranged so that it can be driven in rotation during winding, around an axis aligned with axis 4.

    Le guide-fil 6 comporte une partie d'entrée du fil 8 à proximité du support 7 et, à son extrémité libre, une partie de sortie du fil 9 guidant le fil représenté par 10 pour l'amener à la bobine à former dans un plan perpendiculaire à l'axe 4 de celle-ci. Entre ces deux parties d'extrémité, le guide-fil 6 comporte une partie intermédiaire 11 dont la longueur est supérieure à la longueur de la bobine 3 et le long de laquelle le fil est guidé entre les parties 8 et 9. La Fig. 1 montre encore une canette 12 pour l'alimentation du dispositif en fil relativement épais, cette canette étant montée sur le support 7 de façon à pouvoir tourner autour d'un axe aligné avec l'axe 4 dans l'exemple représenté. Dans le cas où le fil de bobinage est relativement fin, l'alimentation du guide-fil 6 peut être réalisée à partir d'une réserve de fil indépendante, le fil étant de préférence guidé pour passer dans l'axe de rotation, en l'occurrence l'axe 4.The wire guide 6 has an entry portion of the wire 8 near the support 7 and, at its free end, an outlet portion of the wire 9 guiding the wire represented by 10 to bring it to the coil to be formed in a plane perpendicular to the axis 4 thereof. Between these two end parts, the wire guide 6 has a part intermediate 11 whose length is greater than the length of the coil 3 and along which the wire is guided between parts 8 and 9. Fig. 1 also shows a can 12 for feeding the relatively thick wire device, this can being mounted on the support 7 so that it can rotate around an aligned axis with axis 4 in the example shown. In the event that the wire winding is relatively fine, the supply of the wire guide 6 can be made from an independent wire reserve, the wire being preferably guided to pass in the axis of rotation, in the occurrence axis 4.

    La Fig. 2 montre la forme du guide-fil 6 dans sa partie intermédiaire 11 qui est délimitée, dans sa section transversale, par deux arcs de cercle concentriques dont le centre commun se situe sur l'axe 4. Dans la forme de réalisation représentée à la Fig. 2, le fil 10 passe dans une rainure ouverte entre les parties 8 et 9 du guide-fil.Fig. 2 shows the shape of the thread guide 6 in its part intermediate 11 which is delimited in its cross section, by two concentric arcs whose common center is located on axis 4. In the embodiment shown in FIG. 2, the wire 10 passes through an open groove between the parts 8 and 9 of the thread guide.

    La Fig. 3 montre en particulier le guide-fil 6 en vue de dessus, les différentes parties étant désignées par les mêmes chiffres de référence que dans la Fig. 1.Fig. 3 shows in particular the wire guide 6 in top view, the different parts being designated by the same numbers of reference that in Fig. 1.

    Comme le montrent les Figures 1 à 3, le guide-fil 6 présente, dans sa partie intermédiaire passant par l'entrefer 2, une très faible hauteur, sa rigidité étant assurée par sa forme générale constituant un secteur cylindrique et la forme de sa partie d'extrémité libre 9.As shown in Figures 1 to 3, the thread guide 6 has, in its intermediate part passing through the air gap 2, a very small height, its rigidity being ensured by its general shape constituting a cylindrical sector and the shape of its part free end 9.

    Les supports du circuit magnétique 1 et du guide-fil 6 sont agencés pour faire effectuer au circuit magnétique et au guide-fil deux mouvements relatifs simultanés, à savoir, un mouvement de rotation autour de l'axe 4, et un mouvement de translation dans le sens longitudinal du guide-fil, sur la longueur de la bobine 3.The supports of the magnetic circuit 1 and the wire guide 6 are arranged to make the magnetic circuit and the wire guide two simultaneous relative movements, i.e., a movement of rotation around axis 4, and a translational movement in the longitudinal direction of the thread guide, along the length of the spool 3.

    Pour amener le guide-fil 6 dans la position de travail avant le bobinage, on déplace le guide-fil et le circuit magnétique l'un par rapport à l'autre dans le sens de l'axe de la bobine, alors que le guide-fil est placé dans une position angulaire dans laquelle il se trouve entièrement à l'extérieur de l'entrefer.To bring the thread guide 6 into the working position before winding, the wire guide and the magnetic circuit are moved one by relative to each other in the direction of the axis of the coil, while the thread guide is placed in an angular position in which it found entirely outside the air gap.

    Dans les formes d'exécution du guide-fil illustrées dans les Figures 4 et 5, la partie intermédiaire comporte, respectivement, un canal pour le guidage du fil, ou une partie ouverte aux extrémités de laquelle le fil est guidé à travers un canal similaire à celui de la Fig. 4.In the embodiments of the thread guide illustrated in Figures 4 and 5, the intermediate part comprises, respectively, a channel for guiding the wire, or a part open to ends of which the wire is guided through a similar channel to that of FIG. 4.

    La Fig. 6 montre, de façon similaire, un guidage du fil dans une rainure au bord de la partie intermédiaire du guide-fil, alors que la Fig. 7 représente une partie d'un tel guide-fil 6', en vue latérale. Fig. 6 similarly shows a guide of the wire in a groove at the edge of the intermediate part of the thread guide, while the Fig. 7 shows a part of such a wire guide 6 ', in side view.

    Les Figures 8, 9 et 10 concernent une forme de réalisation d'un guide-fil permettant le bobinage sur un circuit magnétique ayant un entrefer de longueur minimale. Comme le montre en particulier la Fig. 8, la partie intermédiaire 11' peut, dans cette réalisation, avoir une hauteur sensiblement égale à l'épaisseur du fil 10, ce dernier passant dans une ouverture 11" tout au long de la partie intermédiaire 11'. Le fil 10 est guidé en amont et en aval de la partie intermédiaire par des parties 21 et 22 coopérant avec les parties d'entrée et de sortie du fil, 8' et 9'. La Fig. 10 représente ce guide-fil en vue de dessus, des parties analogues étant désignées par les mêmes chiffres de référence que dans les Figures 8, 9 et 1 à 3.Figures 8, 9 and 10 relate to an embodiment of a wire guide allowing the winding on a magnetic circuit having an air gap of minimum length. As shown in particular Fig. 8, the intermediate part 11 ′ can, in this embodiment, have a height substantially equal to the thickness of the wire 10, this last pass through an 11 "opening throughout the game intermediate 11 '. Wire 10 is guided upstream and downstream of the intermediate part by parts 21 and 22 cooperating with the wire entry and exit parts, 8 'and 9'. Fig. 10 represents this thread guide in top view, analogous parts being designated by the same reference numbers as in the Figures 8, 9 and 1 to 3.

    La Fig. 11 montre un dispositif pour réaliser simultanément deux bobines, 3 et 3', sur des branches parallèles d'un circuit magnétique 1 dont l'entrefer se situe dans un plan de symétrie entre les deux bobines. Les guide-fil 6 et 61 ont une des formes décrites précédemment et sont entraínés en rotation, respectivement, autour des axes 4 et 4' des bobines à former. Cette rotation s'effectue à la même vitesse, dans le même sens ou en sens inverse, mais avec un décalage angulaire de 180° lors du passage dans l'entrefer, de sorte que les guide-fil 6 et 61 passent alternativement dans l'entrefer 2. Les supports respectifs 7 et 71 et le support 1a du circuit 1 sont en outre agencés pour effectuer un mouvement relatif dans le sens axial des bobines. La Fig. 12 montre, en vue de face, la forme que peuvent avoir les supports 7 et 71 pour permettre les rotations susmentionnées en opposition de phase. Un tel dispositif permet de réduire environ de moitié le temps total du bobinage.Fig. 11 shows a device for simultaneously carrying out two coils, 3 and 3 ', on parallel branches of a circuit magnetic 1 whose air gap is in a plane of symmetry between the two coils. The thread guides 6 and 61 have one of the shapes described above and are driven in rotation, respectively, around the axes 4 and 4 ′ of the coils to be formed. This rotation takes place at the same speed, in the same direction or opposite direction, but with an angular offset of 180 ° when passage in the air gap, so that the wire guides 6 and 61 pass alternately in the air gap 2. The respective supports 7 and 71 and the support 1a of circuit 1 are further arranged to perform a relative movement in the axial direction of the coils. Fig. 12 shows, in front view, the shape that the supports can have 7 and 71 to allow the aforementioned rotations in opposition phase. Such a device makes it possible to reduce by approximately half the total winding time.

    Le présent dispositif peut également être adapté à la réalisation de bobines sur des circuits magnétiques de forme toroïdale, dont l'entrefer peut avoir une longueur relativement réduite. Comme le montre la Fig. 13, un guide-fil 62 est disposé avec sa partie intermédiaire dans l'entrefer 32 d'un circuit magnétique 31 pour former au moins une bobine 33 sur ce circuit, de façon similaire au cas d'un circuit à branches rectilignes. Dans ce cas toutefois, le guide-fil 62 effectue en outre un mouvement de pivotement dans le plan du circuit 31 autour du centre de l'entrefer 32. Une deuxième bobine, non-représentée, peut également être formée sur une portion diamétralement opposée du circuit 31, de façon similaire à celle illustrée par la Fig. 11. Deux positions extrêmes du guide-fil 62 sont montrées à la Fig. 13 et désignées par 62a et 62b. Les flèches f1, f2 et f3 indiquent les différentes composantes du mouvement de ce guide-fil par rapport au circuit 31.The present device can also be adapted to the production of coils on magnetic circuits of toroidal shape, the air gap of which may have a relatively short length. As shown in Fig. 13, a wire guide 62 is arranged with its intermediate part in the air gap 32 of a magnetic circuit 31 to form at least one coil 33 on this circuit, similarly to the case of a circuit with rectilinear branches. In this case, however, the wire guide 62 also performs a pivoting movement in the plane of the circuit 31 around the center of the air gap 32. A second coil, not shown, can also be formed on a diametrically opposite portion of the circuit 31, similarly to that illustrated in FIG. 11. Two extreme positions of the wire guide 62 are shown in FIG. 13 and designated by 62a and 62b. The arrows f 1 , f 2 and f 3 indicate the different components of the movement of this thread guide relative to the circuit 31.

    Il ressort de ce qui précède que le dispositif selon l'invention permet de former des bobines à une cadence très élevée dans une fabrication en grande série, de sorte que le prix de revient de la pièce fabriquée peut être considérablement abaissé par rapport à celui des procédés actuellement disponibles. Il peut notamment être utilisé dans la fabrication d'électro-aimants, de transformateurs de courant ou de tension à fuite, de capteurs de courant utilisant une cellule de Hall placée dans l'entrefer, d'électro-valves, de relais, de contacteurs ou d'actuateurs linéaires ou angulaires.It appears from the above that the device according to the invention allows coils to be formed at a very high rate in a mass production, so that the cost price of the manufactured part can be lowered considerably compared to that of currently available processes. It can in particular be used in the manufacture of electromagnets, leakage current or voltage transformers, current using a Hall cell placed in the air gap, solenoid valves, relays, contactors or actuators linear or angular.

    Claims (7)

    1. Winding device for forming a substantially cylindrical electric coil (3) on a substantially rectilinear arm of a magnetic circuit (1) having an air-gap (2), the device comprising at least one rigid wire guide (6) having a wire inlet portion (8) and a wire outlet portion (9) and an elongated intermediate portion (11), this intermediate portion having dimensions enabling passage of the intermediate portion through the air-gap, the device further comprising a supporting device (7) of said wire guide (6) and a supporting device (1a) of the magnetic circuit (1), arranged in such a manner as to effect, on the wire guide (6) in relation to the magnetic circuit (1), a rotary movement about the axis (4) of the coil (3) and a reciprocating movement in the axial direction of the coil (3), characterized in that said air-gap (2) has a very small length in relation to the length of the magnetic circuit (1) and extends perpendicularly to the direction of its length, substantially parallel to the arm on which the coil (3) is formed, and in that said intermediate portion (11) of the wire guide (6) has, in longitudinal section, over a length at least equal to that of the coil (3), a smaller height than the length of the air-gap (2), and is arranged parallel to the axis (4) of the coil (3) at a distance equal to the distance of the air-gap (2) in relation to this axis (4), in order to allow passage of the intermediate portion (11) through the air-gap (2) in the longitudinal direction and in the transverse direction.
    2. Device according to claim 1, characterized in that the supporting device (7) of the wire guide (6) comprises a support for a wire supply bobbin (12) arranged such that the axis (4) of rotation of the bobbin (12) and the axis (4) of the coil (3) are aligned.
    3. Device according to claim 1, characterized in that the intermediate portion (11) of the wire guide (6) has a transverse section delimited by two arcs of concentric circles having their center on the axis (4) of the coil (3) and being spaced apart by a smaller distance than the length of the air-gap, and that it comprises a channel or groove for guiding the wire (10) parallel to the axis (4) of the coil (3).
    4. Device according to claim 1, characterized in that the intermediate portion (11) of the wire guide has a transverse section delimited by two arcs of concentric circles having their center on the axis (4) of the coil (3) and being spaced apart by a smaller distance than the length of the air-gap and comprising, in the longitudinal direction, an open portion (11") with a length at least equal to that of the coil (3), the inlet (8') and the outlet (9') portions of the wire (10) being arranged to guide the wire (10) such that it passes, in the open portion, to the interior of the space defined by said arcs.
    5. Device according to claim 1, characterized in that the support (7) of the wire guide (6) and/or that (1a) of the magnetic circuit (1) comprises means for positioning the wire guide (6) before winding by a relative displacement of the wire guide (6) and the magnetic circuit (1) in the axial direction of the coil (3), in such a manner that the wire guide (6) remains completely outside the air-gap (2) during this displacement.
    6. Device according to one of the claims 1 to 5, for simultaneously forming a substantially cylindrical second coil (3') on a substantially rectilinear second arm of the magnetic circuit (1), the two arms on which the coils are formed being symmetrical with respect to a plane passing through the middle of the air-gap (2), perpendicularly to the direction of the length of the air-gap, characterized in that it comprises a second wire guide (61) having a wire inlet portion and a wire outlet portion as well as an elongated intermediate portion, arranged parallel to the axis (4') of the second coil (3') at a distance equal to the distance of the air-gap with respect to this axis, said intermediate portion of the second wire guide (61) having dimensions enabling passage of this intermediate portion in the air-gap (2) in the longitudinal direction and in the transverse direction thereof, the device further comprising a second supporting device (71) for said second wire guide (61), the second supporting device and the supporting device (1a) of the magnetic circuit (1) being arranged to effect, on the second wire guide (61) with respect to the magnetic circuit (1), a rotary movement about the axis (4') of the second coil (3') and a reciprocating movement in the axial direction of the second coil, said rotary movement of the second wire guide (61) having the same speed as that of the first wire guide (6), but with an angular shift of 180° when passing through the air-gap (2).
    7. Winding device for forming an electric coil (33) on a magnetic circuit (31), the device comprising at least one rigid wire guide (62) having a wire inlet portion and a wire outlet portion (10) as well as an elongated intermediate portion having dimensions enabling passage of the intermediate portion through the air-gap (32), the device further comprising a supporting device for said wire guide (62) and a supporting device of said magnetic circuit (31) arranged in such a manner as to effect, on the wire guide (62) with respect to the magnetic circuit (31), a rotary movement about the instantaneous axis of the coil (33) as well as a pivotal movement about the center of the air-gap (32) in the plane of the magnetic circuit, characterized in that the magnetic circuit (31) has a toroidal form and said air-gap (32) has a very small length in relation to the length of the magnetic circuit, in that the intermediate portion of the wire guide (62) has, in cross section, a height such that the intermediate portion can turn, while passing through the air-gap (32) in the plane of the magnetic circuit (31), by an angle at least equal to the angle formed by two planes defined by the extremities of the coil (33) to be formed, and in that said supporting device of the wire guide (62) and said supporting device of the magnetic circuit (31) are arranged in such a manner as to effect, on the wire guide (62) with respect to the magnetic circuit (31), an alternating translation movement in the direction of the length of said intermediate portion.
    EP96921862A 1995-08-04 1996-07-19 Winding device for forming an electrical coil on a magnetic air gap circuit Expired - Lifetime EP0842519B1 (en)

    Applications Claiming Priority (4)

    Application Number Priority Date Filing Date Title
    CH02266/95A CH690474A5 (en) 1995-08-04 1995-08-04 Winding device for forming an electric coil on a magnetic circuit with air gap.
    CH2266/95 1995-08-04
    CH226695 1995-08-04
    PCT/CH1996/000264 WO1997006540A1 (en) 1995-08-04 1996-07-19 Winding device for forming an electrical coil on a magnetic air gap circuit

    Publications (2)

    Publication Number Publication Date
    EP0842519A1 EP0842519A1 (en) 1998-05-20
    EP0842519B1 true EP0842519B1 (en) 1999-09-08

    Family

    ID=4229751

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP96921862A Expired - Lifetime EP0842519B1 (en) 1995-08-04 1996-07-19 Winding device for forming an electrical coil on a magnetic air gap circuit

    Country Status (7)

    Country Link
    US (1) US5709353A (en)
    EP (1) EP0842519B1 (en)
    JP (1) JP3007420B2 (en)
    AT (1) ATE184420T1 (en)
    CH (1) CH690474A5 (en)
    DE (1) DE69604184T2 (en)
    WO (1) WO1997006540A1 (en)

    Families Citing this family (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US6512438B1 (en) 1999-12-16 2003-01-28 Honeywell International Inc. Inductor core-coil assembly and manufacturing thereof
    US6948676B1 (en) 2004-07-06 2005-09-27 Tremblay John K Method of winding electrical and electronic components

    Family Cites Families (9)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US2777116A (en) * 1952-05-13 1957-01-08 Bendix Aviat Corp Coil form
    US2773651A (en) * 1952-11-13 1956-12-11 Western Electric Co Coil winding apparatus
    US3128056A (en) * 1962-03-02 1964-04-07 Universal Mfg Co Machine for winding toroidal television vertical deflection coils
    US4417699A (en) * 1981-11-19 1983-11-29 Alfred Skrobisch Apparatus for winding a wire or thread on C-shaped cores
    US4529138A (en) * 1983-08-29 1985-07-16 Westinghouse Electric Corp. Strip core winder for core-coil assembly
    EP0188095A1 (en) * 1984-12-13 1986-07-23 East Rock Technology Inc. Process for the manufacture of a toroidal ballast choke and machine for use in such process
    US4782582A (en) * 1984-12-13 1988-11-08 Eastrock Technology Inc. Process for the manufacture of a toroidal ballast choke
    DE3635220A1 (en) * 1986-10-16 1988-04-21 Standard Elektrik Lorenz Ag WRAPPING DEVICE
    US5032846A (en) * 1989-09-05 1991-07-16 Chang Yu Pin Selectively positionable antenna mounting

    Also Published As

    Publication number Publication date
    JP3007420B2 (en) 2000-02-07
    JPH11505072A (en) 1999-05-11
    US5709353A (en) 1998-01-20
    EP0842519A1 (en) 1998-05-20
    DE69604184T2 (en) 2000-06-15
    DE69604184D1 (en) 1999-10-14
    ATE184420T1 (en) 1999-09-15
    CH690474A5 (en) 2000-09-15
    WO1997006540A1 (en) 1997-02-20

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