EP0562495B1 - Transformateur ou inductance comprenant des pièces profilées de matériau isolant aux têtes de bobines - Google Patents

Transformateur ou inductance comprenant des pièces profilées de matériau isolant aux têtes de bobines Download PDF

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Publication number
EP0562495B1
EP0562495B1 EP93104587A EP93104587A EP0562495B1 EP 0562495 B1 EP0562495 B1 EP 0562495B1 EP 93104587 A EP93104587 A EP 93104587A EP 93104587 A EP93104587 A EP 93104587A EP 0562495 B1 EP0562495 B1 EP 0562495B1
Authority
EP
European Patent Office
Prior art keywords
transformer
series reactor
reactor according
coil
coils
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
EP93104587A
Other languages
German (de)
English (en)
Other versions
EP0562495A3 (en
EP0562495A2 (fr
Inventor
Peter Horn
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.)
Knobel AG Lichttechnische Komponenten
Original Assignee
Knobel AG Lichttechnische Komponenten
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 Knobel AG Lichttechnische Komponenten filed Critical Knobel AG Lichttechnische Komponenten
Publication of EP0562495A2 publication Critical patent/EP0562495A2/fr
Publication of EP0562495A3 publication Critical patent/EP0562495A3/de
Application granted granted Critical
Publication of EP0562495B1 publication Critical patent/EP0562495B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
    • H01F27/326—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures specifically adapted for discharge lamp ballasts

Definitions

  • the invention relates to a transformer, in particular for low-voltage halogen lamps, or a symmetrical fluorescent lamp ballast choke, with two coils arranged one above the other, the winding heads of which each protrude from the laminated core of the transformer or the ballast choke, and with insulating material moldings arranged on both sides of the sheet metal pack on the winding heads .
  • Such a transformer or a series choke is e.g. known from EP Patent No. 121 676.
  • several shaped pieces are required for each winding head in the case of coils lying one above the other. Furthermore, the coils are only loosely inserted in the fittings in the known arrangement.
  • the invention has for its object to provide a transformer or a series reactor, which is easier and cheaper to manufacture.
  • each insulating molded part is formed in one piece and comprises a partition wall which isolates the two coils in the area of the winding overhangs and fixation means which are arranged on both sides and which respectively clamp the corresponding coil.
  • the one-piece shaped pieces with the fixing means make it possible to fasten both coils to the shaped pieces with the winding heads.
  • the result is a dimensionally stable unit consisting of coils and shaped pieces, which can be handled as such and which can subsequently be fitted with the core sheets. This allows simple manufacture of the transformer or the series choke.
  • a plurality of tongues projecting from the partition are preferably provided as the fixing means.
  • resilient tongues are preferably provided on the outside of the dividing wall, each of which is provided at its free end with a projection which overlaps the coil. This allows the coil to be fastened to the fitting by simply snapping the coil into place.
  • Figure 1 shows the upper part of a transformer, in particular for halogen lamps, or a symmetrical ballast for fluorescent lamps.
  • the winding heads of the coils 2, 3 protrude from the core package 1 from the laminated core.
  • the coils are each provided with a foil insulation 21, which in each case at the winding head ends.
  • An insulating material molding is provided to isolate the coils 2, 3 which are exposed in the area of the winding head.
  • This has a partition 4 for the insulation of the coils.
  • Holding means are arranged on the partition, which fix the two coils to the shaped piece.
  • these fixing means for the coil 2 comprise the tongues 6, 7 and 9.
  • the tongues 5, 8 and 10 are provided as the fixing means for the coil 3, the latter not being visible in FIG.
  • the coils are held firmly on the fitting by means of the tongues mentioned.
  • the winding heads of the coils 2, 3 are fixed in an identical shaped piece.
  • These shaped pieces with fixing means thus result in a stable unit from the two coils and the shaped pieces, which is stable even without the core sheets.
  • FIGS. 2 to 6 show different views of a specific exemplary embodiment of the one-piece molded part which is only shown schematically in FIG.
  • Figure 2 shows a side view corresponding to a view according to arrow A of Figure 1.
  • the tongues 5, 6, 9 and 10 are formed, which are arranged in this embodiment at the lower end of the partition, ie adjacent to the laminated core.
  • An end plate 15 is arranged at the upper end of the partition and parallel to the end face of the laminated core, which holds means for the wire ends of the coils 2, 3.
  • side walls 11, 12 and 13 are also arranged.
  • the side walls 12 and 13 form a slot between them, which serve as a wire guide for the wire ends of the coil 3, which must be guided to the top of the end plate and which must maintain predetermined insulation distances.
  • Such wire guide elements 14, 26 are also provided on the inside on the underside of the end plate 15.
  • FIG 3 shows a view of the insulating molding according to the arrow B of Figure 1.
  • the rigid tongue 10 is designed as a hollow box with the cavity 18 that is open on one side.
  • This cavity 18 is intended to accommodate a thermal fuse.
  • the thermal fuse In this box, which is somewhat spaced from the laminated core, the thermal fuse has good thermal contact with the copper of the coil 3.
  • the thermal fuse is inserted before the entire transformer is impregnated and this fuse is in the impregnating agent, which fills the cavity 18, which is only open on one side, included.
  • FIG. 4 shows a plan view of the end plate 15 corresponding to the arrow C in FIG. 1.
  • the holding means for the wire ends of the coils 2 and 3 can be seen. Slots are provided in the formations 16, 17, into which the wire ends of the one coil can be inserted. Terminal lugs are then crimped onto the formations and the wire ends.
  • wire holders designed as recesses 20, 24 intended.
  • wire brackets are designed to be resilient in that further recesses 22, 23 are provided in the end plate 15 to the recesses 20 and 24, respectively, whereby a springing of the sections of the end plate adjoining the recesses is made possible, which results in the resilient action of the in leads the recesses 20, 24 arranged wire ends.
  • the fitting shown can be used on both winding heads of the transformer. In the case of a transformer, only the wire holding means of one shaped piece are required, since the wire ends of both coils are led out on the same side of the transformer. In the case of a series choke, on the other hand, the wire holding means 16, 17 of both fittings are used, since in the case of the series choke the wire ends of the two coils are usually led out on opposite end faces of the choke. In this case, the wire holding means 20, 24 of both fittings are not required.
  • Figure 5 shows a bottom view of the fitting described so far, i.e. in the direction of arrow D of FIG. 1.
  • the partition and the fixing means which are formed by the tongues 6, 7, 9 and 5, 8, 10, are again visible.
  • Figure 6 also shows a section through the fitting along the line A-A of Figure 3.
  • an end cap can be pushed over the fitting.
  • This end cap covers the winding head of the other coil.
  • This end cap can be designed as a simple plastic part, which is pushed onto the molding, for example from the direction corresponding to the arrow B in FIG.
  • the end cap is preferably designed as a terminal housing which holds the connection terminals for the primary and secondary winding of the Transformer.
  • Such a terminal housing is shown in section in FIG.
  • the terminal housing is designed as a one-piece plastic housing 30, in which recesses 31 are arranged, in which screw terminals can be arranged.
  • corresponding recesses 32 and 33 are provided in the plastic housing 30.
  • the recesses 32 are preferably covered with a cover after the transformer has been installed, since only the screws accessible via the recesses 33 have to be actuated to connect the transformer.
  • the fitting according to Figure 2 is also shown, from which it can be seen how the terminal housing is pushed onto the fitting. This is done in such a way that the wire ends held by the wire holding means 16, 17, 20, 24 extend directly into the screw terminals. This results in a particularly simple assembly of the transformer.
  • FIG. 8 shows a view into the interior of the terminal housing in the direction of the screw terminals.
  • a chamber 35 can be seen, which is used to arrange a thermal switch.
  • a one-piece plastic part 36 is preferably provided for holding such a thermal switch, which can be inserted into the chamber 35 and which is indicated in FIG. 8.
  • the thermal switch 37 is shown only as a block.
  • the holder 36 also has a section which carries the right outer screw terminal 41, which in this case is designed as two screw connections which are axially separated and electrically insulated from one another. This is because a line must first be routed from the input terminal of the transformer to the thermal switch and then a line from the thermal switch back to the second terminal, to which the corresponding wire end of the coil is attached.
  • the holder 36 has corresponding wire guide means 38, 39 for guiding the lines mentioned.
  • This one piece Holder 36 made of plastic, which can be pre-wired with the thermal switch and the screw terminals mentioned, further simplifies the assembly of the transformer.
  • the fully wired cold 36 is inserted into the terminal housing 30 for this purpose.
  • the clamp housing 30 prepared in this way can then be pushed onto the shaped piece which carries the wire ends of the coils in the correct position. When the terminal housing is pushed on, the wire ends are inserted into the associated screw terminals. Subsequently, only the corresponding screws of the screw terminals have to be tightened and the screw openings 32 covered with the cover.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Transformers For Measuring Instruments (AREA)

Claims (21)

  1. Transformateur, en particulier pour lampes halogènes à basse tension, ou inductance symétrique d'entrée pour lampes fluorescentes, avec deux bobines superposées (2, 3) dont les têtes de bobinage protubèrent hors du paquet de tôles (1) du transformateur ou de l'inductance, et avec des pièces isolantes profilées disposées des deux côtés du paquet de tôles sur les têtes de bobinage, caractérisé en ce que chaque pièce est monolithique et comporte une paroi de séparation (4) isolant les deux bobines (2, 3) l'une de l'autre dans la région des têtes de bobinage, ainsi que des moyens de fixation (6, 7, 9; 5, 8, 10) agencés de chaque côté de la paroi et destiné chacun à maintenir la bobine correspondante par pincement.
  2. Transformateur ou inductance d'entrée selon la revendication 1, caractérisé en ce que les moyens de fixation pincent entre eux les deux branches des bobines formant un U dans la région des têtes de bobinage.
  3. Transformateur ou inductance d'entrée selon la revendication 1 ou 2, caractérisé en ce que les moyens de fixation comportent chacun plusieurs languettes (6, 7, 9; 5, 8, 10) s'étendant à partir de la paroi de séparation (4) pour pincer les bobines.
  4. Transformateur ou inductance d'entrée selon les revendications 2 et 3, caractérisé en ce qu'il est prévu une languette centrale rigide (9, 10) s'étendant entre les branches de la bobine en forme de U, et qu'une languette extérieure élastique (6, 7; 5, 8) comportant à son extrémité libre une griffe agrippant la bobine est disposée de chaque côté des branches.
  5. Transformateur ou inductance d'entrée selon une des revendications 1 à 4, caractérisé en ce que la paroi de séparation (4) est munie d'une plaque terminale (15) essentiellement parallèle à la surface frontale du paquet de tôles et comportant des dispositifs (16, 17, 20, 24) de maintien pour les extrémités des fils d'enroulement des bobines.
  6. Transformateur ou inductance d'entrée selon la revendication 5, caractérisé en ce que les dispositifs de maintien comprennent des pinces élastiques (20, 24) ménagées dans la plaque terminale et comportant chacune un évasement pour recevoir l'extrémité d'un fil, une fente qui s'élargit à partir de l'évasement en direction du bord de la plaque terminale (15) et qui débouche sur ce bord pour l'introduction du fil dans l'évasement, ainsi qu'une fente (22, 23) fermée à son extrémité et s'étendant à partir de l'évasement vers l'intérieur de la plaque terminale.
  7. Transformateur ou inductance d'entrée selon la revendication 5 ou 6, caractérisé en ce que les dispositifs de maintien comportent des guides (16, 17) pour fils s'étendant à partir de la plaque terminale.
  8. Transformateur ou inductance d'entrée selon une des revendications 1 à 7, caractérisé en ce que des guides pour fils (12, 13, 14) sont formés sur la paroi de séparation (4) pour déterminer les trajectoires des extrémités libres des fils de bobinage.
  9. Transformateur ou inductance d'entrée selon une des revendications 1 à 8, caractérisé en ce qu'une chambre (18) ouverte d'un côté et dont au moins une paroi est disposée contre la bobine est formée sur un côté de la paroi de séparation (4) pour recevoir un fusible thermique.
  10. Transformateur ou inductance d'entrée selon les revendications 4 et 9, caractérisé en ce que la chambre (18) forme la languette rigide centrale (10).
  11. Transformateur ou inductance d'entrée selon une des revendications 1 à 10, caractérisé par un capot pouvant être enfilé sur la pièce isolante profilée.
  12. Transformateur ou inductance d'entrée selon la revendication 11, caractérisé par un capot pouvant être enfilé perpendiculairement à l'axe de la bobine.
  13. Transformateur ou inductance d'entrée selon la revendication 11, caractérisé par un capot pouvant être enfilé en direction de l'axe de la bobine.
  14. Transformateur ou inductance d'entrée selon la revendication 13, caractérisé en ce que le capot (30) porte une rangée de plots à vis qui d'une part reçoivent les extrémités des fils des bobines et qui d'autre part forment les terminaux du transformateur ou de l'inductance d'entrée.
  15. Transformateur ou inductance d'entrée selon les revendications 5 et 14, caractérisé en ce que les dispositifs de maintien (16, 17, 20, 24) sur la plaque terminale (15) pour les extrémités des fils sont essentiellement coaxiaux avec des plots à vis correspondants situés dans le capot et servant à recevoir des extrémités de fils correspondants, de manière à ce que les extrémités des fils s'introduisent dans les plots à vis correspondants lorsque l'on enfile le couvercle.
  16. Transformateur ou inductance d'entrée selon une des revendications 14 ou 15, caractérisé en ce que les ouvertures filetées (32) orientées vers la bobine des plots à vis peuvent être recouvertes par un couvercle amovible du capot.
  17. Transformateur ou inductance d'entrée selon une des revendications 13 à 16, caractérisé en ce qu'une chambre (35) est prévue dans le capot (30) pour recevoir un interrupteur thermique (37).
  18. Transformateur ou inductance d'entrée selon les revendications 14 et 17, caractérisé en ce que la chambre est prévue au milieu entre deux secteurs de la rangée de plots à vis.
  19. Transformateur ou inductance d'entrée selon la revendication 17 ou 18, caractérisé en ce que l'interrupteur thermique est composé d'un thermo-interrupteur bimétallique avec une résistance chauffante additionnelle à couche épaisse.
  20. Transformateur ou inductance d'entrée selon une des revendications 17 à 19, caractérisé en ce qu'il est prévu un organe de fixation (36) en un matériau isolant pour l'interrupteur thermique (37).
  21. Transformateur ou inductance d'entrée selon les revendications 14 et 20, caractérisé en ce que l'organe de fixation porte une fixation pour l'interrupteur thermique,. des guides (38, 39) pour les fils connectant l'interrupteur thermique, et un plot à vis (41) en deux parties pour recevoir deux conducteurs mutuellement isolés.
EP93104587A 1992-03-26 1993-03-19 Transformateur ou inductance comprenant des pièces profilées de matériau isolant aux têtes de bobines Expired - Lifetime EP0562495B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH95992 1992-03-26
CH959/92 1992-03-26

Publications (3)

Publication Number Publication Date
EP0562495A2 EP0562495A2 (fr) 1993-09-29
EP0562495A3 EP0562495A3 (en) 1993-11-03
EP0562495B1 true EP0562495B1 (fr) 1995-08-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP93104587A Expired - Lifetime EP0562495B1 (fr) 1992-03-26 1993-03-19 Transformateur ou inductance comprenant des pièces profilées de matériau isolant aux têtes de bobines

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EP (1) EP0562495B1 (fr)
AT (1) ATE127270T1 (fr)
DE (1) DE59300515D1 (fr)
ES (1) ES2076809T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2304837B1 (es) * 2006-02-16 2009-06-04 Polylux, .Sl. Inductancia y su correspondiente procedimiento de fabricacion.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3309110C2 (de) * 1983-03-15 1985-03-21 Schwabe GmbH & Co KG Elektrotechnische Fabrik, 7067 Urbach Drossel oder Transformator, insbesondere als Vorschaltgerät für Gasentladungslampen

Also Published As

Publication number Publication date
EP0562495A3 (en) 1993-11-03
DE59300515D1 (de) 1995-10-05
ATE127270T1 (de) 1995-09-15
ES2076809T3 (es) 1995-11-01
EP0562495A2 (fr) 1993-09-29

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