EP0018596B1 - Spulenkörper für elektrische Drahtwicklungen - Google Patents

Spulenkörper für elektrische Drahtwicklungen Download PDF

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Publication number
EP0018596B1
EP0018596B1 EP80102206A EP80102206A EP0018596B1 EP 0018596 B1 EP0018596 B1 EP 0018596B1 EP 80102206 A EP80102206 A EP 80102206A EP 80102206 A EP80102206 A EP 80102206A EP 0018596 B1 EP0018596 B1 EP 0018596B1
Authority
EP
European Patent Office
Prior art keywords
coil body
cover
plate
winding
flanges
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
Application number
EP80102206A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0018596A1 (de
Inventor
Ernst Wiesner
Armin Geuze
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.)
Zumtobel AG
Original Assignee
Zumtobel AG
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 Zumtobel AG filed Critical Zumtobel AG
Publication of EP0018596A1 publication Critical patent/EP0018596A1/de
Application granted granted Critical
Publication of EP0018596B1 publication Critical patent/EP0018596B1/de
Expired 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
    • H01F5/00—Coils
    • H01F5/06—Insulation of windings
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads
    • H01F2005/043—Arrangements of electric connections to coils, e.g. leads having multiple pin terminals, e.g. arranged in two parallel lines at both sides of the coil
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads
    • H01F2005/046—Details of formers and pin terminals related to mounting on printed circuits

Definitions

  • the invention relates to a coil former for electrical wire windings for transformers, chokes or the like.
  • a box-like base part which has four surfaces at right angles to one another for receiving an iron core, the base part preferably having flanges lying on both sides in parallel planes which have the width limit the windings to be picked up.
  • Such bobbins are known. They form the supporting structure for the wire winding, so to speak, which is then connected to an iron body of a transformer or a coil.
  • These iron bodies can be designed in core or shell construction. In order to protect the winding or parts thereof, for example the end windings, from direct access, these must be covered.
  • closure parts and caps were developed, which were subsequently attached to either the coil body or a housing of the device during the manufacture of the device.
  • a cap of this type made of electrically insulating material receives the connections of the winding.
  • an open-ended chamber is formed on the insulating cap, in which a spring-loaded clamp is arranged and which is closed by a removable cover plate with openings for inserting and releasing the connecting wires.
  • the cap itself connects bluntly to the front of the iron body and is fixed here by external brackets.
  • this construction is complex and therefore not useful (DE-OS 2345219).
  • the cap has a tongue on its side facing the iron core, which is inserted between the end face of the iron core and the inner part of the winding head.
  • This construction is also not expedient, because it wastes the changing space, since space must be cut out on the end faces so that the tongue mentioned can be accommodated (AT-PS 348 078).
  • Another, also known coil body made of electrical insulating material for small transformers is equipped along the peripheral edge of at least one flange with a foldable extension, which should have a sufficient size to cover an essential part of the coil surface.
  • This foldable extension is connected to the flanges of the coil body exclusively and only via a narrow, small web.
  • the flanges are circular. If the bobbin is properly wound and mounted in the iron core, there remains an air gap between the peripheral edge of the bobbin and the extension mentioned, which cannot offer sufficient protection against breakdown voltages. The gap between the circular flange and the foldable extension forms an immediate air breakdown section.
  • Another coil body that has become known is cylindrical in shape with circular flanges to delimit the winding space.
  • the diameter of one circular flange is slightly larger than that of the other flange.
  • a tab is articulated with two small openings and a small pin extending in the plane of this tab.
  • an opening is provided for receiving this pin, the axis of which is parallel to the axis of the cylindrical bobbin.
  • a cylindrical jacket is provided, which is attached to the prepared and wound bobbin in the axial direction, this jacket, the height of which corresponds to the height of the bobbin, sits on the edge of the larger flange.
  • This bobbin is also very complex and unsuitable, because with this construction, too, two differently designed parts have to be manufactured and handled and ultimately assembled.
  • the aforementioned tab which serves to fix the wire winding, is not expedient for the automatic manipulation, since the mentioned pin cannot be easily inserted into the opening provided in the counter flange for receiving it.
  • Sheathed coils for small electric motors have also become known (DE-GM 1 906 609). These coverings consist of two separately manufactured and differently designed, gutter-shaped shells, which can be plugged together by means of eyelets and hooks and which in the recessed, closed, Toroidal cavity absorb the motor winding.
  • the invention now aims to design a bobbin of the type described at the outset in such a way that the winding it receives is covered on all sides in a protective manner, that the devices used to protect the winding are a direct part of the actual bobbin and that the bobbin is manipulated with mechanical devices. in particular can be wound and the devices used to protect the winding can be brought into their functional position with simply designed devices and can be held in this position.
  • this complex object is achieved in that a cover-like plate is hinged on the end face to at least one flange and is pivotable relative to it, and its dimensions correspond to the outer end cross-sectional contour of the coil body and the free edge of the plate and the edge of the counter flange have locking members, for example hook attachments and have eyelets through which, after the winding of the coil former and folding over the plate, the latter is held in the folded position and the lid-like plate on the side edges perpendicular to the hinged side edge has bent webs pointing towards the coil former and before folding over against the plane of the latter Flange, on which it is articulated, is offset to the outside by the height of these webs, the webs of the lid-like, raised plates overlap at the edges of tabs which are attached to the flanges which carry the lid-like plates
  • the flanges lie and extend over their length, are formed and which lie in the plane of the flanges supporting them and whose width corresponds to at least half the winding width and which, after wind
  • the flanges on the end face have stiffening ribs on their outside, on which the lid-like plates are formed via flags or tabs, which creates particularly flexible connecting and articulation links.
  • the bobbins are used with sheathed iron bodies. No special locking elements are required for the tabs provided on the edge, since the webs of the cover-like plates overlap the tabs on the edge and hold them in their intended position.
  • Flanges of the coil body lying opposite one another in pairs can each carry a tab. However, it is also possible that such a correspondingly wide tab is only present on one flange of one side.
  • the width of the tabs is greater than half the width of the winding and that the tabs in the mutually overlapping area have a reduced wall thickness.
  • the wire ends of the wire windings nested by the coil former and its closure members must be led to the outside to connection points.
  • at least one of the locking flanges having mating flanges has eyelets on the outside for receiving contact pins, the axes of these eyelets extending essentially at right angles to the lid-like plate folded up and the mating flange in the area of these eyelets from its outer Edge has outgoing slots.
  • the eyelets of the locking members are arranged on the outer edge of the lid-like plate and hooks are formed on the edge of the counter flange, since this makes the injection mold easier than if the arrangement of these locking elements or locking members would be the other way around.
  • the coil former has a box-like base part 1 composed of four surfaces 2, 3, 4 and 5 that are at right angles to one another.
  • Flanges 6, 7, 8, 9 and 10, 11, 12, 13 are on both sides of the base body 1 and preferably in mutually parallel planes intended. If one speaks here of flanges on each side of the base part 1, it should be mentioned that the flanges form a uniform, essentially closed frame on each side, as is the case with coil formers.
  • the individual sides of the respective flange frame are designated separately, so to speak, only for reasons of clarity.
  • the narrow end faces 4 and 5 of the base part 1 are each pulled up over the planes formed by the flanges 6, 7, 8, 9 or 10, 11, 12, 13 and thus form stop strips 32, 33, 34, 35 for the iron jacket, as briefly outlined below.
  • a lid-like plate 14 and 15 is hinged to each of the end flanges 12 and 13, the cross-sectional contour of which corresponds approximately to the end cross-sectional contour of the coil former, which delimits the winding space.
  • the front flange 9 carries on its outside eyelets 28 for receiving contact pins (not shown here). From the outer edge of the flange 9, slot-like recesses 31 also extend in the area of these eyelets 28.
  • the lid-like plates 14 and 15 are formed at the edges with bent webs 18 and 19 and the plates 14 and 15 themselves are offset by the extent of the height h (FIG. 3) of the webs 18 and 19 relative to the flanges 12 and 13 carrying them , so that the winding space of the bobbin is not adjusted by these webs 18, 19.
  • These lid-like plates 14 and 15 are articulated via tabs 22 and 23 which form hinges in connection with the reinforcing ribs 20 and 21.
  • Further tabs 24, 25, 26 and 27 are formed on the side flanges 6 and 7 as well as 10 and 11, specifically via embossed or notched edges 43, 44, 45, 46.
  • the width b of these flanges is smaller than the winding width B of the bobbin.
  • the tabs 24-27 also have a reduced and reduced wall thickness in the mutually overlapping area.
  • This coil body is made in one piece, preferably in an injection molding process, and leaves the production mold in the form shown in FIGS. 1 to 5.
  • the coil former obtained in this way is placed on a winding mandrel and wound with electrically insulated wire.
  • the two wire ends of this winding are inserted and inserted into the slots 31 below the eyes 28.
  • Contact pins (not shown here) are pressed into these eyelets 28 and the wire ends of the winding are subsequently attached to these contact pins. If a winding 47 has been applied to the bobbin (see FIG. 6), first the side tabs 24, 25, 26 and 27 are folded against one another and then the cover-like plates 14 and 15 in the direction of arrows 41 and 42 against the bobbin pivoted.
  • the wound and closed bobbin is now inserted, for example, in a jacket choke.
  • a jacket choke is illustrated in a side view in FIG. 7.
  • the jacket of the choke is shown partially torn open and therefore gives a view of the closed coil former or its flank.
  • the contact pins already mentioned several times are indicated by a dashed line 49 which are inserted into the eyelets 28.
  • Connection elements for example terminals or the like, can now be attached to these contact pins.
  • the respective outermost lamellae 53 and 48 of the iron jacket 50 rest against the inner raised stop bars 32, 33, 34 and 35.
  • the iron body of this jacket choke is attached to a holder 51.
  • the iron body or iron jacket 50 of the choke completely surrounds the coil body, so that only the winding heads or end faces with the cover-like plates 14 and 15 are exposed. Thanks to the measure according to the invention, the winding is fully and completely protected on all sides after it is inserted into the iron body, without the need for the production of a separate part, which subsequently has to be additionally mounted on the finished choke or on a housing which the choke records, must be attached. Electrical devices of this type are subsequently soaked in insulating materials. These insulating materials completely encase the device and glue the locking parts 16 and 17 so that the lid-like plates 14 and 15 can no longer be opened easily.
  • a further advantageous embodiment of the invention lies in the fact that on at least one of the cover-like plates 14, 15 arranged on the end face a housing receiving terminals is provided on the outside and is formed in one piece with the plate.
  • This possibility is indicated in FIG. 7 by the dashed line 52.
  • This line illustrates the housing, which is formed in one piece with the plate 15 and in which recesses are provided for receiving clamping elements and recesses for receiving connecting wires. Details of this terminal housing are not explained here, since this terminal housing or its specific embodiment is not the subject of the invention. There are numerous options available for this configuration. It can be designed so that it serves to hold screw terminals, but resilient terminals can also be arranged and the like.
  • the cooling fins 54 and 55 are arranged on the cover-like plates 14 ', 15' and further cooling fins 56 and 57 on the flanges 12 'and 13'.
  • the cooling fins 54 on the cover-side plate 15 ' are somewhat shortened compared to their height.
  • a terminal housing can be connected directly to the cover-like plate 15 '.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulating Of Coils (AREA)
  • Coils Of Transformers For General Uses (AREA)
EP80102206A 1979-05-07 1980-04-24 Spulenkörper für elektrische Drahtwicklungen Expired EP0018596B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0336679A AT365850B (de) 1979-05-07 1979-05-07 Spulenkoerper fuer elektrische drahtwicklungen
AT3366/79 1979-05-07

Publications (2)

Publication Number Publication Date
EP0018596A1 EP0018596A1 (de) 1980-11-12
EP0018596B1 true EP0018596B1 (de) 1984-07-18

Family

ID=3549434

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80102206A Expired EP0018596B1 (de) 1979-05-07 1980-04-24 Spulenkörper für elektrische Drahtwicklungen

Country Status (9)

Country Link
EP (1) EP0018596B1 (es)
AR (1) AR222543A1 (es)
AT (1) AT365850B (es)
AU (1) AU533934B2 (es)
DE (1) DE3068574D1 (es)
ES (1) ES491215A0 (es)
FI (1) FI71209C (es)
ZA (1) ZA802672B (es)
ZW (1) ZW10580A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6992558B1 (en) 1998-01-30 2006-01-31 Koninklijke Philips Electronics N.V. Electric ballast

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2114832B1 (es) * 1996-11-29 1999-02-01 Luminotecnicas Especial Nuevo soporte aislante para bobinas.
DE102005020106A1 (de) 2005-04-25 2006-10-26 Bombardier Transportation Gmbh Elektromagnet, insbesondere für ein Zugsicherungssystem, und Verfahren zu dessen Herstellung
DE202005011962U1 (de) * 2005-07-29 2005-11-03 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Spulenkörper für eine elektrische Spule
EP2992536B1 (en) * 2013-04-29 2017-05-31 ABB Schweiz AG Bobbin and transformer employing the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1906609U (de) * 1964-10-22 1964-12-17 Heidolph Elektro K G Umhuellte spule fuer elektrische kleinmotoren.

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1187451B (de) * 1961-08-25 1965-02-18 Nordrohr Werke Kg Spule aus Kunststoff mit durch Rippen verstaerkten umrandeten Flanschen
US3378800A (en) * 1967-01-25 1968-04-16 Electric Products Mfg Co Electromagnetic winding having coil wrapper with window insulating flaps
US3470511A (en) * 1967-11-28 1969-09-30 American Mach & Foundry Coil and spool therefor
DE1613777A1 (de) * 1968-01-31 1971-04-22 Blum Eisen & Metallind Spulenkoerper mit einer oder mehreren Drahtwicklungen und eingeschobenem Eisenkern
GB1240795A (en) * 1969-02-12 1971-07-28 Hinchley Engineering Company L Transformer bobbins
DE1936125A1 (de) * 1969-07-16 1971-01-28 May & Christe Gmbh Wicklungsaufbau fuer Kleintransformatoren und Drosselspulen
DE2104421B2 (de) * 1971-01-30 1972-03-16 Weiner, Norbert, 5275 Bergneustadt Spulenkoerper
DE2119042A1 (de) * 1971-04-20 1972-10-26 Graupner, Doerks & Co, Spezialfabrik für Transformatoren, Drahtwiderstände u. Spulen, 8771 Wiesthal Spulenkörper für Transformatoren, Übertrager und dergleichen mit mehreren angeformten Schutzklappen an den Flanschen
DE2235855A1 (de) * 1972-07-21 1974-01-31 Gerhard Quintus Spulenkoerper
GB1529136A (en) * 1977-08-25 1978-10-18 Pye Ltd Bobbins for electrical coils

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1906609U (de) * 1964-10-22 1964-12-17 Heidolph Elektro K G Umhuellte spule fuer elektrische kleinmotoren.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6992558B1 (en) 1998-01-30 2006-01-31 Koninklijke Philips Electronics N.V. Electric ballast

Also Published As

Publication number Publication date
AR222543A1 (es) 1981-05-29
AU533934B2 (en) 1983-12-22
AU5811180A (en) 1980-11-13
ES8104626A1 (es) 1981-03-16
ZA802672B (en) 1981-05-27
DE3068574D1 (en) 1984-08-23
FI71209B (fi) 1986-08-14
ZW10580A1 (en) 1981-01-21
FI71209C (fi) 1986-11-24
FI801456A (fi) 1980-11-08
ES491215A0 (es) 1981-03-16
AT365850B (de) 1982-02-25
ATA336679A (de) 1981-06-15
EP0018596A1 (de) 1980-11-12

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