EP0572192A1 - Ablenkspulenkörper vom Satteltyp - Google Patents

Ablenkspulenkörper vom Satteltyp Download PDF

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Publication number
EP0572192A1
EP0572192A1 EP93303990A EP93303990A EP0572192A1 EP 0572192 A1 EP0572192 A1 EP 0572192A1 EP 93303990 A EP93303990 A EP 93303990A EP 93303990 A EP93303990 A EP 93303990A EP 0572192 A1 EP0572192 A1 EP 0572192A1
Authority
EP
European Patent Office
Prior art keywords
bobbin
coil
winding
nozzle
wire
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.)
Granted
Application number
EP93303990A
Other languages
English (en)
French (fr)
Other versions
EP0572192B1 (de
Inventor
Hiroshi Ikeuchi
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.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing 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 Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Publication of EP0572192A1 publication Critical patent/EP0572192A1/de
Application granted granted Critical
Publication of EP0572192B1 publication Critical patent/EP0572192B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
    • H01J29/76—Deflecting by magnetic fields only
    • H01J29/762—Deflecting by magnetic fields only using saddle coils or printed windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/236—Manufacture of magnetic deflecting devices for cathode-ray tubes
    • 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
    • H01F41/06—Coil winding
    • H01F41/071—Winding coils of special form
    • H01F2041/0711—Winding saddle or deflection coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2209/00—Apparatus and processes for manufacture of discharge tubes
    • H01J2209/236—Manufacture of magnetic deflecting devices
    • H01J2209/2363—Coils
    • H01J2209/2366—Machines therefor, e.g. winding, forming, welding, or the like
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/70—Electron beam control outside the vessel
    • H01J2229/703—Electron beam control outside the vessel by magnetic fields
    • H01J2229/7032—Conductor design and distribution
    • H01J2229/7035—Wires and conductors
    • H01J2229/7036—Form of conductor
    • H01J2229/7037—Form of conductor flat, e.g. foil, or ribbon type

Definitions

  • the present invention relates to a saddle type bobbin for a deflection coil of a deflection yoke mounted on television receivers or display units.
  • Fig.1 shows an example of a bobbin for a saddle type deflection coil for use in a typical deflection yoke.
  • the bobbin 2 is provided with a plurality of coil-winding grooves 5, on which, for example, a coiling wire 11 is wound in layers as shown in Fig.2, to thereby form a deflection coil.
  • the coiling wire 11 uses one of conductive wires (including litz wires) with an insulating layer 4 provided thereon which is coated with an adhesive on its peripheral.
  • the coiling wire 11 In winding the coiling wire 11 on the aforementioned coil-winding grooves 5, the coiling wire 11 is wound in layers by a flyer type automatic winding machine, one by one, or by every some wires, with being unbounded or separated in a form of single wires, whereby a deflection coil will be produced. Subsequently, the thus layer-wound coil is supplied with an electric power, to heat and melt the adhesive applied outside the insulating layer 4, so that the coil wires adhere to each other to complete a deflection coil.
  • Such prior art deflection coil suffers from difficulties: owing to variation of the stretching force acted on coiling wire 11 as it is wound and other reasons, the coiling wire 11 is displaced and biassed as shown in Fig.2, and in other cases, the order of winding of coiling wire 11 is altered and hence such winding as previously designated by a design instruction cannot be practiced. Further, the biassed states of coiling wire 11 of deflection coil that is mass-produced differ from one another for each article, therefore, it would be impossible to regulate a deflection field with high precision. Additionally, mass-production makes dispersion of products larger, resulting in lowering of the yield, and hence the prior art winding method is disadvantageous in view of the cost.
  • the coiling wire 11 is reduced in its displacement and biassed winding as the width of the coil-winding groove is narrowed to satisfy an original design, but followed by another problem of coil performance being deteriorated because of a ratio L/R between inductance L and resistance R being reduced.
  • a deflection coil which is composed by forming a conductive wire row member (which will be referred to as "wire ribbon" hereinafter) in which a plurality of adjoining conductive wires are arranged parallel in a row as shown in Figs.3A to 3D, and winding this member in place of winding a single wire one by one as used to be practiced.
  • Examples of wire ribbon 15 include one that is composed as shown in Fig.3A by arranging in parallel a plurality of conductive wires 8 of copper, aluminum or the like with an insulating layer 4 coated thereon, and adhering them using an adhesive 6; one that is composed as shown in Fig.3B by arranging in parallel a plurality of conductive wires 8 with an insulating layer 4 coated thereon, and adhering together the wires on one side of an insulator sheet 7 of resin, etc., with an adhesive 6; one that is composed as shown in Fig.3C by arranging and adhering together in parallel a plurality of conductive wires 8 formed with an insulating layer 4 and an adhesive layer 9; and one that is composed as shown in Fig.3D by arranging a plurality of conductive wires in a contacting manner in a row, each wire being with an insulating layer 4 covered by a thermoplastic adhesive layer 20.
  • the conductive wires 8 forming the aforementioned wire ribbon 15 are arranged in parallel with one another in an orderly manner in a row, and therefore, neither will each conductive wire 8 be displaced in wire ribbon 15, nor will the order of the wires be altered. Therefore, when this wire ribbon 15 is used, namely, the wire ribbon 15 is wound in layers, it is possible to produce a deflection coil free from the problems such as significant displacement of the conductive wires 8, and the like.
  • a saddle type bobbin for the deflection coil typically has coil-winding grooves 5 in its crossover portions 18, 19 disposed respectively on head and tail end sides thereof, as is exemplarily shown in Fig.S.
  • the height of an inner side flange 3B of the coil-winding groove 5 is formed higher than that of a corresponding outer side flange 3A thereof.
  • the winding machine of this previously proposed example is configurated as shown in Figs.6A and 6B. Specifically, there are provided a base 1, a supporting column 17, a bobbin attachment table 33, a bobbin holding member 31, a bobbin 25 for wire ribbon 15, a bobbin rotating mechanism 12, a back-tension adding means 16, a wire ribbon 15, a nozzle supporting table 26, a nozzle rotating mechanism 28, a nozzle shaft 27, a nozzle 30 disposed in a front end of the nozzle shaft, a nozzle head 23, a nozzle supporting column 35, a bobbin 2, a supporting table 41 for bobbin 2, a bobbin holding portion 42, an arm 40, a first bobbin rotating mechanism 38, a bobbin-side supporting column 37, and a second bobbin rotating mechanism 44.
  • Nozzle shaft 27 is rotatable in both clockwise and anti-clockwise directions as desired by means of nozzle rotating mechanism 28.
  • Nozzle supporting table 26 is attached movable in a vertical direction shown by Y to nozzle supporting column 35.
  • Nozzle supporting 35 is placed upright movable in a horizontal direction shown by X. Attached to the lower end of nozzle shaft 27 is nozzle 30, which is rotatable to a desired direction.
  • Bobbin holding portion 42 of bobbin 2 is shiftable in Z-direction (a direction normal to the document surface in Fig.6B).
  • the bobbin 2 is rotatable about X-axis in link with the rotation of first bobbin rotating mechanism 38 and is driven rotatably about Z-axis in link with second bobbin rotating mechanism 44.
  • wire ribbon 15 is fit into a groove disposed in the right side inner circumferential wall 45 of bobbin 2 while bobbin 2 being moved in a direction of arrow and nozzle 30 being moved in X-axis direction facing the inner side of the bobbin with keeping a predetermined distance therebetween.
  • nozzle 30 reaches the upper side or head side of bobbin 2, nozzle 30 will be rotated from a position 'a' through a position 'b' to a position 'c' in a course shown by arrows as shown in Fig.7B.
  • wire ribbon 15 may be wound smoothly if nozzle 30 is once rotated up to a position beyond flange 3B so as to round out the wire ribbon, and then returned to the position 'c'.
  • bobbin 2 is rotated about X-axis by 90 degrees in the clockwise direction to make a state shown in Fig.7C. From this state, bobbin 2 is rotated by 180 degrees in the anti-clockwise direction about an X-axis passing through a point Z 1, to thereby make a state shown in Fig.7D.
  • wire ribbon 15 is fit to the crossover portion on the head side of bobbin 2.
  • bobbin 2 is rotated 90 degrees in the clockwise direction about the X-axis to reach a state shown in Fig.7E.
  • nozzle 30 is rotated from the position 'c' through a position 'd' to the position 'a' in a course shown by arrows in Fig.7E.
  • wire ribbon 15 may be wound smoothly if nozzle 30 is once rotated beyond flange 3B so as to round out the wire ribbon, and then returned to the position 'a'.
  • bobbin 2 is shifted downward along Z-axis, and nozzle 30 being moved left in X-axis direction while facing the inner side of the bobbin with keeping a predetermined distance therebetween, whereby wire ribbon 15 is fit into a groove disposed on the opposite side.
  • nozzle 30 is moved from the position 'a' through the position 'b' to the position 'c' in a course shown by arrows in Fig.7F.
  • nozzle 30 is once rotated up to a position beyond flange 3B so as to round out wire ribbon 15, and then returned to the position 'c'. Then, bobbin 2 is rotated 90 degrees in the clockwise direction about the X-axis to reach a state shown in Fig.7G. From this state, bobbin 2 is rotated 180 degrees in the anti-clockwise direction about Z-axis to thereby make a state shown in Fig.7H. As a result, wire ribbon 15 is fit to the crossover portion on the tail end side of bobbin 2.
  • bobbin 2 is rotated 90 degree in the clockwise direction about X-axis to make a state shown in Fig.7I.
  • nozzle 30 is once rotated opposite to a position beyond flange 3B so as to round out the wire ribbon 15, and then, nozzle 30 is rotated from the position 'c' through the position 'd' to the position 'a' in a course shown by the arrow.
  • the operation returns to the initial state shown in Fig.7A, and the cycle described heretofore will be repeated to wind up wire ribbon 15 successively into each groove of bobbin 2, whereby a saddle type deflection coil may be completed.
  • the present invention has been achieved to eliminate the above problems, and it is an object of the present invention to provide a saddle type bobbin for deflection coil wherein a conductive wire row member (or wire ribbon) can be wound with precision by a simple winding operation that may prevent a nozzle from colliding against crossover portion while the wire ribbon is wound on the saddle-shaped bobbin.
  • a saddle type bobbin for deflection coil comprising a plurality of coil-winding groove rows for winding up a wire ribbon; and crossover grooves for fitting crossover portion of the deflection coil, each of the crossover grooves being defined between an outer flange and an inner flange of the bobbin, and disposed on its head side and tail end side of the bobbin, and being characterized in that the height of the inner flange is equal or smaller than that of the corresponding outer flange.
  • a wire ribbon is fit into a coil-winding groove by once rotating a nozzle for delivering the wire ribbon up to a position beyond the inner flange so as to round out the wire ribbon when the nozzle travels from the inner side with respect to the longitudinal direction of the bobbin to the crossover portion, and returning the nozzle to a center of the coil-winding groove.
  • wire ribbon can be wound into the coil-winding grooves with positioning the front end of the nozzle for delivering wire ribbon closer to the height of the outer flange of the coil-winding groove. As a result, the wire ribbon can be wound up stably and exactly without failure.
  • the height of the inner flange is set equal or smaller than that of the corresponding outer flange in both the crossover portions, when the nozzle rotates, or travels from the inner side of the bobbin with respect to longitudinal direction thereof to the crossover portion, or vice versa, it is possible to prevent collision of the nozzle with the inner flange, facilitating the winding operation.
  • Fig.9 shows main configurations of a saddle type bobbin for deflection coil in accordance with the embodiment of the present invention.
  • Fig.10 shows a schematic perspective view of a saddle type bobbin for deflection coil shown cut in half in accordance with the embodiment of the present invention.
  • Characteristic feature of the embodiment of the invention lies in that the height of an inner flange of a coil-winding groove disposed for each of crossover portions on head side and tail end (neck) side of a bobbin is equal or less than that of a corresponding outer flange, and the other configurations are the same with those of the prior art example.
  • bobbin 2 has coil-winding grooves 5 defined between outer and inner flanges 3A and 3B in its crossover portions 18, 19 disposed respectively on head and tail end sides thereof.
  • the height of inner flange 3B of the coil-winding groove 5 is formed smaller than that of outer flange 3A thereof.
  • Nozzle 30 for delivering wire ribbon 30 is disposed close to flange 3A of coil-winding groove 5.
  • wire ribbon 15 can be wound into the coil-winding groove 5 formed in the crossover portion with keeping nozzle 30 for delivering wire ribbon 15 closer to the groove.
  • wire ribbon 15 is can be wound up stably and exactly without displacing or deviating from the groove of the crossover portion.
  • the present invention is not be limited to the above embodiment, but various other configurations can be adopted.
  • inner flange 3B of the crossover portion is smaller than that of outer flange 3A
  • inner flange 3B may be as high as corresponding outer flange 3A.
  • the present invention will work well if a relation h W ⁇ h B ⁇ h A holds, where h W denotes a height of a layered coil 13 of the wire ribbon in coil-winding groove 5 of the crossover portion, h B and h A represent heights of outer flange 3A and inner flange 3B, respectively.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
EP93303990A 1992-05-26 1993-05-21 Ablenkspulenkörper vom Satteltyp Expired - Lifetime EP0572192B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP158622/92 1992-05-26
JP4158622A JPH05325832A (ja) 1992-05-26 1992-05-26 偏向コイル用鞍型ボビン

Publications (2)

Publication Number Publication Date
EP0572192A1 true EP0572192A1 (de) 1993-12-01
EP0572192B1 EP0572192B1 (de) 1995-06-28

Family

ID=15675737

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93303990A Expired - Lifetime EP0572192B1 (de) 1992-05-26 1993-05-21 Ablenkspulenkörper vom Satteltyp

Country Status (3)

Country Link
EP (1) EP0572192B1 (de)
JP (1) JPH05325832A (de)
DE (1) DE69300218T2 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0657911A1 (de) * 1993-12-07 1995-06-14 Koninklijke Philips Electronics N.V. Mehrleiterdraht-gewickelte sattelförmige Ablenkspule und Wicklungsverfahren
WO2000034978A1 (en) * 1998-12-07 2000-06-15 Koninklijke Philips Electronics N.V. Saddle-shaped deflection coil and winding method
CN1097843C (zh) * 1996-04-26 2003-01-01 东芝株式会社 阴极射线管的偏转线圈包及备有它的阴极射线管
US6882097B2 (en) * 2001-06-07 2005-04-19 Mitsubishi Denki Kabushiki Kaisha Deflection yoke

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2744048C2 (de) * 1977-09-30 1979-08-23 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Ablenkeinheit für einen Fernsehempfänger
EP0264807A1 (de) * 1986-10-16 1988-04-27 Nokia Unterhaltungselektronik (Deutschland) GmbH Wickelvorrichtung
EP0405209A2 (de) * 1989-06-24 1991-01-02 Nokia (Deutschland) GmbH Sattelspulenanordnung für eine Kathodenstrahlröhre und Spulenträger für eine solche Anordnung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2744048C2 (de) * 1977-09-30 1979-08-23 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Ablenkeinheit für einen Fernsehempfänger
EP0264807A1 (de) * 1986-10-16 1988-04-27 Nokia Unterhaltungselektronik (Deutschland) GmbH Wickelvorrichtung
EP0405209A2 (de) * 1989-06-24 1991-01-02 Nokia (Deutschland) GmbH Sattelspulenanordnung für eine Kathodenstrahlröhre und Spulenträger für eine solche Anordnung

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0657911A1 (de) * 1993-12-07 1995-06-14 Koninklijke Philips Electronics N.V. Mehrleiterdraht-gewickelte sattelförmige Ablenkspule und Wicklungsverfahren
BE1007859A3 (nl) * 1993-12-07 1995-11-07 Philips Electronics Nv Zadelvormige afbuigspoel, meerdraads gewikkeld, en wikkelmethode.
US5769351A (en) * 1993-12-07 1998-06-23 U.S. Philips Corporation Method of winding a saddle-shaped deflection coil
CN1070637C (zh) * 1993-12-07 2001-09-05 皇家菲利浦电子有限公司 多线绕制的鞍形偏转线圈及其绕制法
CN1097843C (zh) * 1996-04-26 2003-01-01 东芝株式会社 阴极射线管的偏转线圈包及备有它的阴极射线管
WO2000034978A1 (en) * 1998-12-07 2000-06-15 Koninklijke Philips Electronics N.V. Saddle-shaped deflection coil and winding method
US6882097B2 (en) * 2001-06-07 2005-04-19 Mitsubishi Denki Kabushiki Kaisha Deflection yoke

Also Published As

Publication number Publication date
DE69300218D1 (de) 1995-08-03
EP0572192B1 (de) 1995-06-28
JPH05325832A (ja) 1993-12-10
DE69300218T2 (de) 1996-03-14

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