EP0887812B1 - Corps isolant pour bobines - Google Patents

Corps isolant pour bobines Download PDF

Info

Publication number
EP0887812B1
EP0887812B1 EP97912230A EP97912230A EP0887812B1 EP 0887812 B1 EP0887812 B1 EP 0887812B1 EP 97912230 A EP97912230 A EP 97912230A EP 97912230 A EP97912230 A EP 97912230A EP 0887812 B1 EP0887812 B1 EP 0887812B1
Authority
EP
European Patent Office
Prior art keywords
coils
support
coil
shaped
sheet
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
EP97912230A
Other languages
German (de)
English (en)
Other versions
EP0887812A1 (fr
Inventor
Carlos Villarroya Lombar
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Especialidades Luminotecnicas SA
Original Assignee
Especialidades Luminotecnicas SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Especialidades Luminotecnicas SA filed Critical Especialidades Luminotecnicas SA
Publication of EP0887812A1 publication Critical patent/EP0887812A1/fr
Application granted granted Critical
Publication of EP0887812B1 publication Critical patent/EP0887812B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers

Definitions

  • the field of the invention is that of insulating supports for coils, being of the type of coils that are preferably used to form part of reactors, whose core is defined by a series of E-shaped and I-shaped plates that are coupled together, in such a way that the central branch of the E-shaped plates is introduced in the hollow central part.
  • the here disclosed insulating support is formed by the coil heads and a rectangular sheet-shaped plastic body, provided in the center and side with respective cuts, and being longitudinally formed to facilitate adaptation thereof to the coil heads.
  • the heads In order to facilitate the anchoring of the coil heads with regard to the support or mandrel where the winding is to take place, according to claim 1 the heads have in relation to the inside surface thereof, some projections that define an imaginary dovetail-shaped recess, in order to anchor the same in the support in order to avoid possible release.
  • the here disclosed insulating support for coils has the purpose allowing configuration of the insulating element for coils, along with the pair of coil heads, in order to carry out winding on it, defining from the first turns an inseparable unitary assemble.
  • the new insulating support for coils is preferably applicable in the configuration of generally rectangular-shaped coils, with their central part hollow, which are used in the manufacture of reactors that have a core of E-shaped and I-shaped plates that couple together.
  • FR-A-2246040 discloses a self-induction coil for discharge lamps including, as part of the invention, an insulating body for the coil.
  • Said insulating body is a rectangular plan sheet-shaped body provided in the center with respective cuts and a pair of folding lines on both sides, nevertheless FR-A-2246040 does not include any element to prevent the insulating body from releasing during the process of winding, by fixing said insulating body on the mandrel where the coil is being wound. This feature would significantly improve the reliability of said process and therefore its efficiency.
  • Another type of support for coils used in the manufacture of reactors is formed by a plastic material body, obtained by injection, and which is defined by a rectangular profile with a U-shaped cross section, between whose wings the winding of the turns is carried out.
  • the first manufacturing cost of coils is represented by the cost of the support made out of injected plastic.
  • Another type of supports for coils used in the manufacture of reactors is defined by a pair of coil heads, and a pair of independent insulating cardboard bodies, that are situated on both sides between the coil heads.
  • the insulating cardboard parts must be fastened on themselves, so that the sides of the coil, remain adequately isolated and so that their assembly on the E-shaped plates of the core is made possible, thus avoiding a possible release of the same, said fastening being done by gluing.
  • the present specification discloses an insulating support for coils as claimed in claim 1, preferably useful in the manufacture of reactors.
  • the coils are formed from coil heads and a rectangular plan support, with its central part hollow and constituting the coil support basically by a generally rectangular plan sheet-shaped plastic body, provided laterally in the center with respective cuts that define a central narrower section, forming longitudinally and laterally respective pairs of formation lines that cause the bending of the sheet-like body according to two side wings.
  • the sheet-shaped plastic body will be mounted in a first coil head by its narrower central part, with a certain mechanical stress, upon the projecting side wings resting on the inside surface of the coil head, causing the free end of the narrower sections to converge with each other, while it is perfectly fastened to the same, whereas the pair of side winds diverge from each other, facilitating the winding of the turns.
  • the coil heads have, with respect to their opposite inside surfaces, respective pairs of ribs that form a dovetail-shaped recess, through which assembly thereof on the corresponding mandrel will be facilitated in order to avoid possible release.
  • the coils are formed by means of a clamp that anchors them by one of their respective side wings, closing them on the winding, whilst upon placing the coil in the core of E-shaped plates, the opposite wings close upon the previously formed wings, materializing perfect isolation without the need of any additional operation.
  • Figure 1 shows a plan view of the plan sheet-shaped plastic body (2) that defines the body of the insulating support of the coil, it being possible to see its general rectangular shape, provided in the center and sides with respective cuts, as well as the conformation of the sheet-shaped body for suitable assembly thereof having been represented with dotted lines.
  • Figure 2 shows a plan view of the already folded sheet (2') in such a way that the longitudinal side wings thereof are bent upwards according to two differentiated sections, facilitating the subsequent assembly thereof.
  • Figure 3 shows a side view of the body of the previous figure, wherein one can see the way in which the pair of side sections of the folded sheet-shaped plastic body tend to bend upward.
  • Figure 4 shows a perspective view of the sheet-shaped plastic body formed and folded over its narrower central section in order to materialize its assembly in the corresponding coil head.
  • Figure 5 shows a perspective view of the sheet-shaped plastic body formed and assembled in the pair of coil heads, defining a stable body due to its own configuration that permits positioning thereof in a support or mandrel.
  • the support (1) for coils used preferably in the manufacture of reactors is fundamentally based on a sheet-shaped insulating plastic body (2, 2') and coil heads (6, 7), having a rectangular plan in the center and side of which respective cuts (3) that form a narrower central section, have been made, while longitudinally to the sheet-shaped body (2) a pair of respective folding lines (4) and (5) are made laterally.
  • respective pairs of longitudinal wings are defined laterally which open in the assembly of the sheet in the coil heads (6) and (7) facilitating the winding on the formed support.
  • the folded sheet-shaped body (2') is mounted on the head (6) by its narrower central section, the folded wings resting on the side of the head, converging by the opposite end together, avoiding disassembly.
  • the supports (1) thus formed are positioned in a support or mandrel, according to a specific number of them in order to pass to the simultaneous winding process of all of them, for which only one winder is necessary, resulting in a high and very profitable production.
  • the coil heads define inside a pair of ribs (8) that form a dovetail-shaped recess through which the assembly in the support or mandrel is materialized, whereby release thereof is prevented.
  • the side wings will fold alternately, overlapping the wings of the corresponding sides, materializing a perfect electric isolation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulating Of Coils (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Coils Or Transformers For Communication (AREA)

Claims (3)

  1. Support isolant pour bobines, les bobines étant du type qui sont utilisées de préférence dans la fabrication de bobines de réactance et qui sont formées à partir d'un support de forme générale rectangulaire ouvert au centre, le support (1) comprenant au moins une tête de bobine (6,7) et un corps (2') en forme de feuille pliée obtenu à partir d'une feuille plane rectangulaire (2), pourvue au centre et sur les côtés d'échancrures respectives (3) et d'une.paire de lignes de pliage (4) et (5) sur les deux côtés, qui provoquent le pliage de ladite feuille selon deux ailes latérales, caractérisé en ce que le corps (2') en forme de feuille pliée est monté dans au moins une tête de bobine (6,7) qui possède en relation avec sa surface opposée des paires respectives de nervures (8) qui forment un évidement en queue d'aronde pour l'assemble dudit corps dans le mandrin lors de l'emboîtement dans un corps présentant une section similaire.
  2. Support isolant pour bobines suivant la revendication 1, caractérisé en ce que le corps (2') en forme de feuille pliée est monté dans la tête de bobine (6) par sa partie centrale la plus étroite, les extrémités libres des deux sections latérales les plus larges étant mutuellement convergentes.
  3. Support isolant pour bobines suivant la revendication 1, caractérisé en ce que la paire d'ailes latérales divergent l'une de l'autre, de telle manière que, lorsque le support (1) configuré et renforcé est placé dans un mandrin, son bobinage est facilité.
EP97912230A 1996-11-29 1997-11-19 Corps isolant pour bobines Expired - Lifetime EP0887812B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ES09602537A ES2114832B1 (es) 1996-11-29 1996-11-29 Nuevo soporte aislante para bobinas.
ES9602537 1996-11-29
PCT/ES1997/000283 WO1998024096A1 (fr) 1996-11-29 1997-11-19 Corps isolant pour bobines

Publications (2)

Publication Number Publication Date
EP0887812A1 EP0887812A1 (fr) 1998-12-30
EP0887812B1 true EP0887812B1 (fr) 2003-01-29

Family

ID=8296872

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97912230A Expired - Lifetime EP0887812B1 (fr) 1996-11-29 1997-11-19 Corps isolant pour bobines

Country Status (9)

Country Link
EP (1) EP0887812B1 (fr)
AR (1) AR009433A1 (fr)
AT (1) ATE232009T1 (fr)
BR (1) BR9707320A (fr)
DE (1) DE69718769T2 (fr)
ES (1) ES2114832B1 (fr)
PL (1) PL184985B1 (fr)
PT (1) PT887812E (fr)
WO (1) WO1998024096A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3317875A (en) * 1965-11-15 1967-05-02 Gen Electric Magnetic core and coil assembly having improved insulation arrangement
AT356224B (de) * 1973-10-01 1979-09-15 Siemens Ag Elektrische drossel, insbesondere vorschalt- drossel fuer entladungslampen
AT365850B (de) * 1979-05-07 1982-02-25 Zumtobel Ag Spulenkoerper fuer elektrische drahtwicklungen

Also Published As

Publication number Publication date
DE69718769D1 (de) 2003-03-06
ES2114832B1 (es) 1999-02-01
PL184985B1 (pl) 2003-01-31
PL328196A1 (en) 1999-01-18
AR009433A1 (es) 2000-04-12
BR9707320A (pt) 1999-04-13
EP0887812A1 (fr) 1998-12-30
WO1998024096A1 (fr) 1998-06-04
PT887812E (pt) 2003-06-30
ES2114832A1 (es) 1998-06-01
ATE232009T1 (de) 2003-02-15
DE69718769T2 (de) 2003-10-23

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