EP0805505B1 - Signaltrennungsvorrichtung mit Spulenkonstruktion - Google Patents

Signaltrennungsvorrichtung mit Spulenkonstruktion Download PDF

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Publication number
EP0805505B1
EP0805505B1 EP97111214A EP97111214A EP0805505B1 EP 0805505 B1 EP0805505 B1 EP 0805505B1 EP 97111214 A EP97111214 A EP 97111214A EP 97111214 A EP97111214 A EP 97111214A EP 0805505 B1 EP0805505 B1 EP 0805505B1
Authority
EP
European Patent Office
Prior art keywords
separating device
signal separating
spiral coil
coil
heating element
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
EP97111214A
Other languages
English (en)
French (fr)
Other versions
EP0805505A3 (de
EP0805505A2 (de
Inventor
Brian Easter
Jerzy Jacek Kropielnicki
Keith Jeremy Twort
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.)
BSH Industries Ltd
Original Assignee
BSH Industries Ltd
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10713622&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0805505(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by BSH Industries Ltd filed Critical BSH Industries Ltd
Publication of EP0805505A2 publication Critical patent/EP0805505A2/de
Publication of EP0805505A3 publication Critical patent/EP0805505A3/de
Application granted granted Critical
Publication of EP0805505B1 publication Critical patent/EP0805505B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/1271—Supports; Mounting means for mounting on windscreens
    • H01Q1/1278—Supports; Mounting means for mounting on windscreens in association with heating wires or layers

Definitions

  • This invention relates to a coil construction for a signal separating device.
  • GB-A-1520030 and GB-A-1600987 describe signal separating devices which act to isolate the d.c. power supply circuit for the heating element of an electrically heated motor vehicle window from the antenna circuit of a radio receiver or transmitter connected to the heating element, so that the heating element can be used simultaneously for heating purposes and as a radio transmitting or receiving antenna.
  • the described devices uses a bifilar coil for signal separation purposes.
  • the two windings or the coil are connected respectively between opposite ends of the heating element and positive and negative terminals of the d.c. power supply circuit, whereby the coil can present a high blocking impedance to radio signals with a low resistance for d.c. currents.
  • Signal separation can therefore be effected in a particularly convenient and efficient manner.
  • bifilar coils are manufactured by machine-winding two side-by-side wires together around a former. This results in two windings which are wound in a common direction, which have a common diameter and axial length, and the turns of which lie axially next to each other.
  • the windings are enclosed within a pot core structure (ferrous ceramic structure) with ends of the windings projecting axially downwardly through openings in the structure for connection purposes.
  • US 3812443 describes the coil assembly of a transformer having an inner helical coil winding telescopically inserted within another outer helical coil winding.
  • An object of the present invention is to provide a bifilar coil construction which can be easily and conveniently manufactured, and with which axial bulk can be minimised, even with thicker gauge wires.
  • the signal separating device may include other components as appropriate for example including capacitors, diodes, chokes, matching circuitry for matching the heating element to the antenna circuit of the radio apparatus, and tuning circuitry to give efficient operation at different frequency bands (am, vhf).
  • each winding has final top and bottom turns which terminate in respective bent ends with straight terminal end portions which project alongside the coil in the axial direction of the coil.
  • the bottom said terminal end portion projects downwardly freely away from the coil
  • the top said terminal end portion projects downwardly freely from the coil alongside and spaced from the outer surface thereof.
  • the terminal end portions are spaced circumferentially from each other.
  • At least one of the top and bottom bent ends is stepped sideways so that the top terminal end portions of the two windings are spaced apart from each other, as also are the bottom terminal end portions.
  • the core may have top and bottom radially extending slots through which the top bent ends and the bottom bent ends respectively project.
  • the separate windings comprise two spiral windings disposed one on top of the other. This results in a 'flat', or reduced axial bulk, construction and the ends of the windings can be readily separately turned up or down or otherwise bent to form connections without unduly axially displacing the turn structure of the windings.
  • the present invention may be constructed by a method wherein the two windings are formed as spiral, and said coils are disposed axially one on top of the other.
  • the coils are of common diameter and are disposed in contact with each other.
  • the signal separating device shown is for use with a conventional heated rear window of a motor car to enable this to be used as a receiving antenna for a car radio.
  • the device comprises a housed circuit 1 which is fixed close to the heated window 2 e.g. beneath the rear parcel shelf or within the roof lining.
  • the housed circuit 1 has five terminals 3, 4, 5, 6, 7, two of which 3, 4 are connected to the heating element 2 of the window, another two of which 5, 6 are connected to d.c. positive and earth of the car d.c. power supply via the usual dashboard switch, and the other of which 7 is connected by a shielded cable to the car radio antenna input circuit.
  • the housed circuit 1 includes a double wound coil 8 having two windings 9,10 of common direction or hand which are interposed respectively between d.c. positive and earth and the two ends of the heating element 2.
  • the antenna terminal 7 is linked to the heating element 2 between the heating element 2 and the double wound coil 8.
  • Other components for matching, tuning, assistance in isolation, balancing of the signals at the ends of the heating element etc. may be incorporated but are not all shown here.
  • the double wound coil comprises two separate windings 9, 10 each of say 5 turns of a thick gauge copper wire capable of carrying said 30 amps without overheating and without significant voltage loss due to resistance.
  • Each winding coil 9, 10 has a bottom turn which terminates in a downwardly bent end 11, 12 projecting freely away from the coil parallel to its axis.
  • Each coil also has a top turn which terminates in a downwardly bent end 13, 14 projecting freely from the coil alongside and spaced from the outer surface of the coil parallel to its axis.
  • the inner coil 9 has an outer diameter which is very slightly smaller than the inner diameter of the outer coil 10.
  • the end 11 of the inner coil is bent directly downwardly whereas the ends 13, 12, 14 of the inner and outer coil are stepped to one side before being bent downwardly.
  • the inner coil 9 is fitted within the outer coil 10 so that they are closely in contact with each other.
  • the bottom projecting ends 11, 12 are alongside each other but are spaced apart due to the abovementioned stepping.
  • a similar arrangement applies to the top projecting ends 13,14.
  • the coils so far described can be readily formed with a conventional winding machine since it is a single wire which is being wound.
  • the ends 11, 12, 13, 14 can be readily bent and fed into (or fed out of) the associated end turn in a particularly simple and accurate manner, and without requiring undue axial distortion or displacement of the end turn, even with the thick gauge wire.
  • the resulting coil construction 8 has reduced axial bulk due to the radial spacing of the turns of the two windings 9, 10 and due to the above mentioned reduced displacement of the end turns.
  • the coil construction 8 is accurately shaped and configured and so it can be easily assembled with a conventional pot core, as shown in the drawing.
  • the pot core is formed in two halves 15, 16 each consisting of an inner hollow cylinder, 17, an outer hollow cylinder 18 and an end plate 19. These cylinders 17, 18 and the end plate 19 are formed integrally in one piece from a ferrous ceramic structure.
  • the core halves 15, 16 are assembled top and bottom around the coil construction with the radial slots 20 offset to receive the projecting ends 11, 12, 13, 14.
  • the halves 15,16 are clamped in position tightly in contact with each other with a bolt 22 passed through the holes 21 and the inner cylinders 17 and engaging a nut 23.

Landscapes

  • General Induction Heating (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Details Of Aerials (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Claims (13)

  1. Signaltrennvorrichtung (1) zur Verwendung bei einem Fensterheizelement (2) eines Kraftfahrzeugs, wobei die Signaltrennvorrichtung ein erstes Paar Anschlüsse (3, 4) zum Anschließen an das Heizelement, ein zweites Paar Anschlüsse zum Anschließen an eine Gleichstromquelle für das Heizelement, sowie einen Antennenanschluss (7) zum Anschließen an eine Funk- bzw Rundfunkübertragungs- und/oder -empfangsvorrichtung umfasst, dadurch gekennzeichnet, dass die Trennvorrichtung (1) eine Spulenanordnung (8) mit ersten (9) und zweiten (10) getrennten Spiralspulenwicklungen umfasst, die in die gleiche Richtung gewickelt sind, wobei eine axial auf der anderen angeordnet ist, und wobei die Wicklungen die gleiche Anzahl an Windungen aufweisen.
  2. Signaltrennvorrichtung nach Anspruch 1, bei der jede getrennte Spiralspulenwicklung (9, 10) eine schraubenförmige Spiralspule bildet.
  3. Signaltrennvorrichtung nach einem der vorangegangenen Ansprüche, bei der die getrennten Spiralspulenwicklungen (9, 10) so angeordnet sind, dass sie einander berühren.
  4. Signaltrennvorrichtung nach einem der vorangegangenen Ansprüche, bei der die getrennten Spiralspulenwicklungen (9, 10) den gleichen Durchmesser aufweisen.
  5. Signaltrennvorrichtung nach einem der vorangegangenen Ansprüche, bei der der Antennenanschluss (7) zwischen das Heizelement (2) und die Doppelwicklungsspulenanordnung (8) eingeschaltet ist.
  6. Signaltrennvorrichtung nach einem der vorangegangenen Ansprüche, die weiters Schaltungskomponenten zum Anpassen, Abstimmen und Unterstützen der Isolierung der Signale umfassen.
  7. Signaltrennvorrichtung nach einem der vorangegangenen Ansprüche, bei der das Heizelement (8) in Serie zwischen die zwei getrennten Spiralspulenwicklungen (9, 10) geschaltet ist.
  8. Signaltrennvorrichtung nach einem der vorangegangenen Ansprüche, bei der jede getrennte Spiralspulenwicklung (9, 10) aus einem Draht gebildet ist, wobei zumindest ein Endabschnitt davon axial zur Spiralspulenwicklung vorragt.
  9. Signaltrennvorrichtung nach Anspruch 9, bei der zumindest einer der Endabschnitte radial um einen radialen Drahtabschnitt von der Spiralspulenwicklung (9, 10) versetzt ist.
  10. Signaltrennvorrichtung nach Anspruch 9, worin die Endabschnitte den Umfang entlang voneinander beabstandet sind.
  11. Signaltrennvorrichtung nach Anspruch 9, worin ein erster axial vorragender Endabschnitt frei von der getrennten Spiralspule nach unten vorragt und ein zweiter Endabschnitt von ihrer Außenfläche beabstandet und dieser entlang frei von der Spule nach unten vorragt.
  12. Signaltrennvorrichtung nach einem der vorangegangenen Ansprüche, die weiters einen Magnetkem umfasst, der einen inneren (17) und einen äußeren (18) zylindrischen Teil aufweist, die sich innerhalb der bzw. um die Spulenanordnung herum befinden.
  13. Signaltrennvorrichtung nach Anspruch 12 bei der der Kern ein Topfkern ist, der in zwei Abschnitten (15, 16) ausgebildet ist, die durch eine sich erstreckende Klemmvorrichtung (22) aneinander geklemmt sind, die sich axial zur Spulenanordnung erstreckt.
EP97111214A 1992-04-08 1993-03-08 Signaltrennungsvorrichtung mit Spulenkonstruktion Expired - Lifetime EP0805505B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9207620 1992-04-08
GB929207620A GB9207620D0 (en) 1992-04-08 1992-04-08 Coil construction
EP93905538A EP0635165B1 (de) 1992-04-08 1993-03-08 Spulenstruktur

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP93905538A Division EP0635165B1 (de) 1992-04-08 1993-03-08 Spulenstruktur
EP93905538.0 Division 1993-11-11

Publications (3)

Publication Number Publication Date
EP0805505A2 EP0805505A2 (de) 1997-11-05
EP0805505A3 EP0805505A3 (de) 1997-11-19
EP0805505B1 true EP0805505B1 (de) 2003-07-23

Family

ID=10713622

Family Applications (2)

Application Number Title Priority Date Filing Date
EP93905538A Expired - Lifetime EP0635165B1 (de) 1992-04-08 1993-03-08 Spulenstruktur
EP97111214A Expired - Lifetime EP0805505B1 (de) 1992-04-08 1993-03-08 Signaltrennungsvorrichtung mit Spulenkonstruktion

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP93905538A Expired - Lifetime EP0635165B1 (de) 1992-04-08 1993-03-08 Spulenstruktur

Country Status (10)

Country Link
US (1) USRE37835E1 (de)
EP (2) EP0635165B1 (de)
JP (1) JP3580813B2 (de)
KR (1) KR100235574B1 (de)
BR (1) BR9306211A (de)
CA (1) CA2133747C (de)
DE (2) DE69319724T2 (de)
GB (2) GB9207620D0 (de)
SG (1) SG44559A1 (de)
WO (1) WO1993021668A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9207620D0 (en) 1992-04-08 1992-05-27 Glass Antennas Tech Ltd Coil construction
DE19825552A1 (de) * 1998-01-14 1999-07-15 Lindenmeier Heinz Heizfeldantenne auf der Fensterscheibe eines Kraftfahrzeugs als Breitbandantenne für den Längstwellen- bis Dezimeterwellenbereich
US7123206B2 (en) * 2003-10-24 2006-10-17 Medtronic Minimed, Inc. System and method for multiple antennas having a single core
ES2289937B1 (es) 2006-07-17 2008-11-01 Tecnoamyn, S.L. Procedimiento para la recogida y transformacion de la sangre en una proteina hidrolizada a partir de sangre de animales de abasto obteniendose proteina hidrilizada de la sangre (phs).
EP3147998B1 (de) * 2014-06-24 2020-04-15 AGC Inc. Antennenspule und antennensystem
FR3096863B1 (fr) * 2019-05-27 2021-04-23 Psa Automobiles Sa Dispositif de dégivrage de vitre de véhicule automobile, volet de coffre et véhicule automobile équipé dudit dispositif de dégivrage

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2624004A (en) 1952-05-16 1952-12-30 Wladimir J Polydoroff Ferromagnetic antenna
US2836805A (en) 1956-12-04 1958-05-27 Essex Electronics Electrical winding construction
DE1439358A1 (de) * 1964-04-03 1968-11-28 Siemens Ag UEbertrager fuer tiefe Temperaturen
GB1123236A (en) * 1964-12-30 1968-08-14 Plessey Uk Ltd Improvements relating to pot core assemblies
US3812443A (en) * 1973-05-24 1974-05-21 Coilcraft Inc Stapled coil construction
GB1520030A (en) * 1975-11-21 1978-08-02 Bsh Electronics Manchester Ltd Electrical device to enable the heating element of an electrically heated motor vehicle window to be used as a radio aerial
US4063247A (en) 1976-10-07 1977-12-13 Nippon Sheet Glass Co., Ltd. Heater glass sheet with broad band receiver antennae
GB1600987A (en) 1977-08-17 1981-10-21 Bsh Electronics Manchester Ltd Electrical device to enable the heating element of an electrically heated motor vehicle window to be used as a radio transmitting aerial
US4305785A (en) * 1980-02-26 1981-12-15 The United States Of America As Represented By The United States Department Of Energy Sensor for detecting changes in magnetic fields
JPS57188102A (en) 1981-05-15 1982-11-19 Asahi Glass Co Ltd Glass antenna for automobile
DE3307262A1 (de) 1983-03-02 1984-09-06 Vogt Gmbh & Co Kg, 8391 Erlau Ringkern-entstoerdrossel mit gerichtetem streufeld
US4654669A (en) 1983-12-20 1987-03-31 Bsh Electronics, Ltd. Electrical signal separating device for window antenna having isolating and matching circuitry
US4928108A (en) 1983-12-20 1990-05-22 Bsh Electronics, Ltd. Electrical signal separating device having isolating and matching circuitry for split passband matching
US4903035A (en) 1983-12-20 1990-02-20 Bsh Electronics, Ltd. Electrical signal separating device having isolating and matching circuitry
US4903034A (en) 1983-12-20 1990-02-20 Bsh Electronics, Ltd. Electrical signal separating device having isolating and matching circuitry
GB8508402D0 (en) 1985-03-30 1985-05-09 Bsh Electronics Ltd Signal separating device
JPS63131704A (ja) * 1986-11-21 1988-06-03 Harada Kogyo Kk ガラスアンテナの補償増幅装置
US5293174A (en) 1987-05-21 1994-03-08 Kropielnicki Jerzy J Vehicle antenna
DE3908350A1 (de) 1989-03-15 1990-09-20 Asea Brown Boveri Elektrische spule
GB8916524D0 (en) * 1989-07-19 1989-09-06 Bsh Electronics Ltd Signal separating device
GB9207620D0 (en) 1992-04-08 1992-05-27 Glass Antennas Tech Ltd Coil construction
US5835066A (en) 1992-04-08 1998-11-10 Glass Antennas Technology Limited Coil construction
GB2295729B (en) 1992-04-08 1996-09-25 Glass Antennas Tech Ltd Coil construction

Also Published As

Publication number Publication date
JPH07505747A (ja) 1995-06-22
DE69319724T2 (de) 1999-03-18
GB9304928D0 (en) 1993-04-28
EP0805505A3 (de) 1997-11-19
KR100235574B1 (ko) 1999-12-15
EP0635165B1 (de) 1998-07-15
USRE37835E1 (en) 2002-09-10
GB2266193A (en) 1993-10-20
DE69333119T2 (de) 2004-05-06
KR950701145A (ko) 1995-02-20
CA2133747C (en) 2002-12-24
BR9306211A (pt) 1998-06-23
DE69319724D1 (de) 1998-08-20
EP0805505A2 (de) 1997-11-05
CA2133747A1 (en) 1993-10-28
DE69333119D1 (de) 2003-08-28
JP3580813B2 (ja) 2004-10-27
SG44559A1 (en) 1997-12-19
WO1993021668A1 (en) 1993-10-28
GB9207620D0 (en) 1992-05-27
GB2266193B (en) 1996-09-25
EP0635165A1 (de) 1995-01-25

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