EP0170425A1 - Méthode pour fabriquer une bobine cylindrique - Google Patents

Méthode pour fabriquer une bobine cylindrique Download PDF

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Publication number
EP0170425A1
EP0170425A1 EP85304707A EP85304707A EP0170425A1 EP 0170425 A1 EP0170425 A1 EP 0170425A1 EP 85304707 A EP85304707 A EP 85304707A EP 85304707 A EP85304707 A EP 85304707A EP 0170425 A1 EP0170425 A1 EP 0170425A1
Authority
EP
European Patent Office
Prior art keywords
coil
spiral
conductor
insulator
cylindrical
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.)
Withdrawn
Application number
EP85304707A
Other languages
German (de)
English (en)
Inventor
Azuma Murakami
Yoshinori Taguchi
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.)
Wacom Co Ltd
Original Assignee
Wacom Co 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
Application filed by Wacom Co Ltd filed Critical Wacom Co Ltd
Publication of EP0170425A1 publication Critical patent/EP0170425A1/fr
Withdrawn legal-status Critical Current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
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/0006—Printed inductances
    • H01F2017/004—Printed inductances with the coil helically wound around an axis without a core

Definitions

  • This invention relates to a method for manufacturing a cylindrical coil suitable for a position detecting apparatus which measures distance by utilizing magneto-strictive vibration waves or for a coordinates input apparatus.
  • Fig. 3 shows an example of a conventional position detecting device utilizing magneto-strictive vibration waves.
  • the reference numeral 1 represents magnetostriction transferring means of continuous length, 2 a first coil provided around the periphery of one end of the magnetostriction transferring means 1, 3 a protection cylinder for housing the magneto-strictive transferring means 1, 4 a second coil provided around the protection cylinder 3, 5 a pulse current generator, 6 a processing device, 7 a positioning magnetism generator, and 8 a biasing magnetic substance.
  • the magnetic field temporarily fluctuates on the first coil 2, whereby magneto-strictive vibration waves are produced at the winding portion of the first coil 2 of the magnetostriction transferring means 1.
  • These magneto-strictive vibration waves are propagated at a propagation speed proper to the magnetostriction transferring means 1 in the longitudinal direction.
  • the mechanical energy is converted into magnetic energy in correspondence with the electric-mechanic coupling coefficient at a portion of the magnetostriction transferring means 1 where the magneto-strictive vibration waves exist, whereby induced electromotive force is generated on the second coil 4.
  • the period between the time when the pulse current is applied to first coil 2 and the time when this large induced electromotive force is generated equals the time required for the magneto-strictive vibration waves to reach the position designated by the positioning magnetism generator 7 from the position where the first coil 2 of the magnetostriction transferring means 1 is disposed. Accordingly, it is possible to detect the distance between the positioning magnetism generator 7 and the first coil 2 , namely, the portion designated by the positioning magnetism generator 7, by detecting the above-mentioned time by the processing device 6 and multiplying this time by the speed of the magneto-strictive vibration waves.
  • a coordinate input apparatus has already been put into practice which is composed of a combination in the directions X and Y of a plurality of paralleled positioning detecting elements consisting of the magnetostriction transferring means 1, the first coil 2 and the second coil 4.
  • the coil 4 is formed by mechanically or manually winding a fine conductor around the protection cylinder 3 formed of an insulating material and fixing the conductor with an adhesive or the like, this apparatus is defective in that the conductor is difficult to handle because it often comes off the periphery of the protection cylinder 3, which leads to poor working efficiency when winding the conductor around the periphery of the protection cylinder 3, and hence poor productivity.
  • an object of the invention to provide a method for manufacturing a cylindrical coil which is easy to handle and is efficient in productivity.
  • This invention achieves this aim by having a spiral conductor layer formed on the outer peripheral surface of a cylindrical insulator, this being attained by forming a conductor layer on the outer periphery of the cylindrical insulator by deposition, plating or the like, and thereafter forming a spiral separated portion on the conductor layer by etching, machining or the like.
  • the conductor on the insulator is formed by deposition, plating or the like, the conductor never slips off the insulator, thereby making its handling easy.
  • manufacture is facilitated and productivity is heightened.
  • This invention achieves this end by having a spiral conductor layer formed on the outer peripheral surface of a cylindrical insulator which in this case consists of a conductor layer formed on the outer periphery of the cylindrical insulator by deposition, plating or the like, a plurality of spiral separated portions which are separated from each other thereafter being formed on the conductor layer by etching, machining or the like.
  • This method enables a cylindrical coil having a plurality of spiral conductors insulated from each other on the outer peripheral surface of a cylindrical insulator to be easily manufactured For these reasons also position detecting apparatus such as a coordinate input device incorporating such a coil can be more economically produced.
  • Fig. 1 shows a cylindrical coil manufactured according to an embodiment of the invention.
  • the reference numeral 10 represents a cylindrical insulator, and 20 a spiral conductor formed on the outer peripheral surface of the insulator 10.
  • the insulator 10 is formed of, for example, a ceramic fiber or a synthetic fiber, and this material may be any insulating material which is unspoiled by the atmosphere or the ambient temperature at the time of deposition and plating or by the solution or the like at the time of etching.
  • the conductor 20 is composed of a metal which allows deposition, plating or the like such as aluminum, copper and nickel.
  • Figs. 2 (a) to 2 (d) show the manufacturing steps of a cylindrical coil according to the invention.
  • the insulator 10 as is shown in Fig. 2(a) is first accommodated in a known form of deposition equipment or plating equipment, and an even conductor layer 21 is formed on the outer peripheral surface 11 thereof (Fig. 2 (b)). Since the conductor layer 21 may be formed only on the outer peripheral surface 11, it is possible, if necessary, to cover both end surfaces 12, 13 and the inner surface 14.
  • a spiral separated portion 22 is next formed on the conductor layer 21 extending over the entire length of the outer peripheral surface 11 of the insulator 10 by a known etching method or by machining with a lathe or the like, forming thereby a spiral conductor 20 (Fig. 2(c)). In this way, a cylindrical coil having a spiral conductor, namely, a coil on the outer peripheral surface of an insulator, is manufactured.
  • the conductor 20 is connected with another circuit by soldering or the like.
  • magnetostriction transferring means 1 it is also possible to accommodate the magnetostriction transferring means 1 within the insulator 10, and to apply it to a position detecting apparatus or a coordinate input apparatus as described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
EP85304707A 1984-07-07 1985-07-02 Méthode pour fabriquer une bobine cylindrique Withdrawn EP0170425A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP141166/84 1984-07-07
JP14116684A JPS6120310A (ja) 1984-07-07 1984-07-07 筒状コイルおよびその製造方法

Publications (1)

Publication Number Publication Date
EP0170425A1 true EP0170425A1 (fr) 1986-02-05

Family

ID=15285667

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85304707A Withdrawn EP0170425A1 (fr) 1984-07-07 1985-07-02 Méthode pour fabriquer une bobine cylindrique

Country Status (2)

Country Link
EP (1) EP0170425A1 (fr)
JP (1) JPS6120310A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2628256A1 (fr) * 1988-03-07 1989-09-08 Comp Generale Electricite Conducteur assimilable a un bobinage, en materiau supraconducteur
EP0652441A1 (fr) * 1993-11-08 1995-05-10 Gec Alsthom T & D Sa Bobine de Rogowski utilisable dans une installation électrique avec enveloppe métallique à la terre et procédé de fabrication d'une telle bobine
DE4424368A1 (de) * 1994-07-11 1995-07-06 Siemens Ag Verfahren zur Herstellung einer Rogowski-Spule und Strommeßanordnung
WO1997018570A1 (fr) * 1995-11-14 1997-05-22 Daewoo Electronics Co., Ltd. Structure d'enroulement cylindrique pour transformateur de retour de spot

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1994767A (en) * 1934-06-27 1935-03-19 Heintz & Kaufman Ltd Method of making inductances
FR2204857A1 (fr) * 1972-10-31 1974-05-24 Siemens Ag
US3891918A (en) * 1971-03-23 1975-06-24 James F Ellis Linear displacement transducer utilizing an oscillator whose average period varies as a linear function of the displacement
JPS58155714A (ja) * 1982-03-11 1983-09-16 Nippon Valqua Ind Ltd コイルの製造方法
FR2523719A1 (fr) * 1982-03-17 1983-09-23 Merlin Gerin Detecteur de position d'un element mobile, notamment d'une barre de controle d'un reacteur nucleaire

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5227351A (en) * 1975-08-27 1977-03-01 Hitachi Ltd Wafer process control system
JPS52147071A (en) * 1976-06-01 1977-12-07 Mitsubishi Electric Corp Basket for etching

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1994767A (en) * 1934-06-27 1935-03-19 Heintz & Kaufman Ltd Method of making inductances
US3891918A (en) * 1971-03-23 1975-06-24 James F Ellis Linear displacement transducer utilizing an oscillator whose average period varies as a linear function of the displacement
FR2204857A1 (fr) * 1972-10-31 1974-05-24 Siemens Ag
JPS58155714A (ja) * 1982-03-11 1983-09-16 Nippon Valqua Ind Ltd コイルの製造方法
FR2523719A1 (fr) * 1982-03-17 1983-09-23 Merlin Gerin Detecteur de position d'un element mobile, notamment d'une barre de controle d'un reacteur nucleaire

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN, vol. 7, no. 276 (E-215)[1421], 9th December 1983; & JP - A - 58 155 714 (NIHON BARUKAA KOGYO K.K.) 16-09-1983 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2628256A1 (fr) * 1988-03-07 1989-09-08 Comp Generale Electricite Conducteur assimilable a un bobinage, en materiau supraconducteur
EP0331998A1 (fr) * 1988-03-07 1989-09-13 Gec Alsthom Sa Conducteur assimilable à un bobinage, en matériau supraconducteur
US4970483A (en) * 1988-03-07 1990-11-13 Societe Anonyme Dite:Alsthom Coil-like conductor of sintered superconducting oxide material
EP0652441A1 (fr) * 1993-11-08 1995-05-10 Gec Alsthom T & D Sa Bobine de Rogowski utilisable dans une installation électrique avec enveloppe métallique à la terre et procédé de fabrication d'une telle bobine
FR2712423A1 (fr) * 1993-11-08 1995-05-19 Gec Alsthom T & D Sa Bobine de Rogowski utilisable dans une installation électrique avec enveloppe métallique à la terre et procédé de fabrication d'une telle bobine.
DE4424368A1 (de) * 1994-07-11 1995-07-06 Siemens Ag Verfahren zur Herstellung einer Rogowski-Spule und Strommeßanordnung
WO1997018570A1 (fr) * 1995-11-14 1997-05-22 Daewoo Electronics Co., Ltd. Structure d'enroulement cylindrique pour transformateur de retour de spot

Also Published As

Publication number Publication date
JPS6120310A (ja) 1986-01-29

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19861006

RIN1 Information on inventor provided before grant (corrected)

Inventor name: TAGUCHI, YOSHINORI

Inventor name: MURAKAMI, AZUMA