EP0503370B1 - Schwingkreisspule für einen magnetfeldgesteuerten Oszillator - Google Patents

Schwingkreisspule für einen magnetfeldgesteuerten Oszillator Download PDF

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Publication number
EP0503370B1
EP0503370B1 EP92103243A EP92103243A EP0503370B1 EP 0503370 B1 EP0503370 B1 EP 0503370B1 EP 92103243 A EP92103243 A EP 92103243A EP 92103243 A EP92103243 A EP 92103243A EP 0503370 B1 EP0503370 B1 EP 0503370B1
Authority
EP
European Patent Office
Prior art keywords
coil
oscillating circuit
strip
circuit coil
core
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
EP92103243A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0503370A1 (de
Inventor
Manfred Ing. Grad. Fichter
Gernot Dipl.-Phys. Hilger
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.)
Mannesmann VDO AG
Original Assignee
Mannesmann VDO AG
Mannesmann Kienzle GmbH
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 Mannesmann VDO AG, Mannesmann Kienzle GmbH filed Critical Mannesmann VDO AG
Publication of EP0503370A1 publication Critical patent/EP0503370A1/de
Application granted granted Critical
Publication of EP0503370B1 publication Critical patent/EP0503370B1/de
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
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/04—Fixed inductances of the signal type  with magnetic core
    • H01F17/045—Fixed inductances of the signal type  with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils

Definitions

  • the invention relates to a resonance circuit coil for a magnetic field-controlled oscillator with a coil body, a winding and a coil core made of amorphous, ferromagnetic metal.
  • oscillators of this type in which the oscillating circuit coils represent magnetic sensors with extremely high sensitivity and mechanical and thermal robustness.
  • controllable oscillators by the magnetic fields of the flowing currents for monitoring current flows in electrical lines, for example vehicle lamps or other, preferably safety-relevant systems and systems.
  • electrical lines for example vehicle lamps or other, preferably safety-relevant systems and systems.
  • constant magnetic field it is possible in the constant magnetic field to be able to determine changes in position of such a sensor relative to the field direction and thus to create a compass function.
  • Other applications are speed and angle measurements, whereby very slow movements can also be detected, as well as path and position determinations.
  • the measured value is formed by changing the magnetic properties of a magnetic circuit consisting of a permanent magnet and a resonant circuit coil or of its coil core, in the end by changing the permeability of the coil core by either a relative movement of two magnetic circuit elements or a field distortion caused by movement relative to the sensor, ferromagnetic material.
  • the resonant circuit coil acting as a sensor and at the same time being an element of the signal-processing oscillator circuit is suitable for large-volume production, ie the resonant circuit coil must be designed so that it consists of simple and easy to assemble components are insensitive to tolerances and can be easily assembled even on a suitable carrier, for example a printed circuit board, so that the prerequisites for mechanical assembly are met even with relatively small dimensions.
  • the object on which the invention is based is therefore to create a resonance circuit coil of the type mentioned at the outset, which can be satisfactorily reproduced when it is manufactured under large-series conditions with as little manufacturing and assembly effort as possible.
  • the solution to the problem provides that a winding mandrel is formed between cheeks formed on the coil body of the oscillating circuit coil, that the coil core is designed in the form of a band, and that this band is fastened to a surface which has just been formed on the winding mandrel.
  • the coil core is designed in the form of a tape and that the tape can be fastened to the coil body from the outside, for example by direct gluing or by using a carrier coated on both sides.
  • the coil body is designed in such a way that the band-shaped coil core extends over the entire length of the bobbin can be attached. This solution also offers the prerequisite for mechanical assembly of the coil core with little effort.
  • the solution found can thus be produced without problems.
  • it can be used universally and in particular also in cost-critical applications, for example in vehicle technology.
  • the circuit according to FIG. 1 represents an emitter-coupled oscillator with an oscillating circuit connected in parallel, consisting of a filter capacitor 2, which is used for short-circuiting interference voltages, consisting of an emitter resistor 5 assigned to two transistors 3 and 4 connected in parallel, as well as a capacitor 6 and a parallel connected Voice coil 7, which the frequency-determining variables, d. H. specify the capacitance and the inductance of the oscillating circuit.
  • a capacitor 8 is used to decouple the signal of the oscillating circuit.
  • the output stage 9 connected downstream of the oscillator 1 consists of a voltage divider formed by resistors 10 and 11, which is used to set the operating point of a transistor 12. With 13 the load resistance of the transistor 12 is designated. After the input voltage has been applied, a signal according to the voltage-time diagram shown is present at output 14 of output stage 9.
  • the coil former 15 produced by the injection molding process has two cheeks 16 and 17, between which a winding mandrel 18 which is cylindrical in the present exemplary embodiment and which can also have an elongated, in any case a rounded cross-sectional shape, is formed.
  • a lug 19 attached to the coil former 15 serves to receive the coil former in a winding device, while the pins 20 and 21, which are offset on the cheeks 16 and 17, are provided for fixing the resonant circuit coil 7 on a suitable carrier, not shown, preferably a printed circuit board are.
  • Openings 22 and 23 formed in the cheeks 16 and 17 serve to press in contact pins 24 and 25 (FIG. 4).
  • the band-shaped coil core 27 is preferably attached to the coil body 15 by gluing on the base surface 28 of the groove 26. It is also conceivable to use a double-sided coated adhesive tape as a carrier and fastening element for the band-shaped coil core 27.
  • the winding mandrel 18 can also be provided with a flat surface. It is crucial for the resonant circuit coil 7 according to the invention that the attachment or fastening surface for the band-shaped coil core 27 continues over the entire length of the coil body 15 in order to achieve the greatest possible sensitivity.
  • the contact pins 24 and 25, on the one hand, together with the fixing pins 20 and 21 serve to fasten the voice circuit coil 7 to a printed circuit board by reaching through the printed circuit board and being connected to conductor tracks, and on the other hand to attach and contact the cable ends 29 and 30 on the winding mandrel 18 applied winding 31 of the voice circuit coil 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
EP92103243A 1991-03-08 1992-02-26 Schwingkreisspule für einen magnetfeldgesteuerten Oszillator Expired - Lifetime EP0503370B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9102779U 1991-03-08
DE9102779U DE9102779U1 (de) 1991-03-08 1991-03-08 Schwingkreisspule für einen magnetfeldgesteuerten Oszillator

Publications (2)

Publication Number Publication Date
EP0503370A1 EP0503370A1 (de) 1992-09-16
EP0503370B1 true EP0503370B1 (de) 1995-10-25

Family

ID=6865041

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92103243A Expired - Lifetime EP0503370B1 (de) 1991-03-08 1992-02-26 Schwingkreisspule für einen magnetfeldgesteuerten Oszillator

Country Status (4)

Country Link
EP (1) EP0503370B1 (hu)
JP (1) JPH0739205Y2 (hu)
DE (2) DE9102779U1 (hu)
ES (1) ES2085507T3 (hu)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19538757C1 (de) * 1995-10-18 1997-03-06 Vdo Schindling Magnetfeldsensor
DE19547091B4 (de) * 1995-12-16 2005-04-07 Kaschke Kg (Gmbh & Co.) Antennenspule mit oberflächenmontierbarem Gehäuse und Verfahren zu deren Herstellung
US6466121B1 (en) * 2000-01-14 2002-10-15 Delphi Technologies, Inc. Coil assembly
DE10249919A1 (de) * 2002-10-26 2004-05-13 Festo Ag & Co. Spulenanordnung als Magnetfeldsensor
JP6968720B2 (ja) * 2018-01-31 2021-11-17 ヒロセ電機株式会社 ワイヤ巻回方法および磁気センサ

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5712283B2 (hu) * 1973-12-18 1982-03-10
DE3334827A1 (de) * 1983-09-27 1985-04-11 Vogt Gmbh & Co Kg, 8391 Erlau Stoerschutzdrossel und verfahren zur herstellung solcher stoerschutzdrosseln
GB2157087A (en) * 1984-03-13 1985-10-16 Weyrad Improvements relating to linearity coils
JPS60233904A (ja) * 1984-05-04 1985-11-20 Matsushita Electric Ind Co Ltd アンテナ装置
DE3824642A1 (de) * 1988-07-20 1990-02-01 Vogt Electronic Ag Duo-spule z. b. als treiber- und vertikalablenkungsintegrationsspule fuer den ost-west-diodenmodulator in bildsichtgeraeten

Also Published As

Publication number Publication date
ES2085507T3 (es) 1996-06-01
JPH0739205Y2 (ja) 1995-09-06
EP0503370A1 (de) 1992-09-16
DE9102779U1 (de) 1991-05-29
JPH04127614U (ja) 1992-11-20
DE59204087D1 (de) 1995-11-30

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