EP0405209A2 - Bobine en forme de selle pour un tube à rayons cathodiques et dispositif de support pour une telle bobine - Google Patents

Bobine en forme de selle pour un tube à rayons cathodiques et dispositif de support pour une telle bobine Download PDF

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Publication number
EP0405209A2
EP0405209A2 EP90110983A EP90110983A EP0405209A2 EP 0405209 A2 EP0405209 A2 EP 0405209A2 EP 90110983 A EP90110983 A EP 90110983A EP 90110983 A EP90110983 A EP 90110983A EP 0405209 A2 EP0405209 A2 EP 0405209A2
Authority
EP
European Patent Office
Prior art keywords
grooves
coil
coil carrier
arrangement
saddle
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
EP90110983A
Other languages
German (de)
English (en)
Other versions
EP0405209A3 (en
EP0405209B1 (fr
Inventor
Andreas Dr. Ehrhardt
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.)
Nokia Deutschland GmbH
Original Assignee
Nokia Unterhaltungselektronik Deutschland GmbH
Nokia Deutschland 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 Nokia Unterhaltungselektronik Deutschland GmbH, Nokia Deutschland GmbH filed Critical Nokia Unterhaltungselektronik Deutschland GmbH
Publication of EP0405209A2 publication Critical patent/EP0405209A2/fr
Publication of EP0405209A3 publication Critical patent/EP0405209A3/de
Application granted granted Critical
Publication of EP0405209B1 publication Critical patent/EP0405209B1/fr
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

Definitions

  • the invention relates to a saddle coil assembly for a cathode ray tube, i. H. a saddle coil assembly with a funnel-shaped coil support made of insulating material, which carries two saddle coil windings.
  • the coil former usually consists of two coil former halves. More specifically, the invention relates to such coil carrier halves and a saddle coil arrangement which has two coil carrier halves, each with a winding.
  • These saddle coil arrangements are used for the horizontal deflection of the electron beams in a cathode ray tube.
  • the cathode ray tube is one with a plurality of electronically controllable electron beams, that is to say typically a color picture tube.
  • the invention can also be used with monochrome tubes.
  • Saddle coil arrangements with a bobbin and two individual windings are produced in two fundamentally different ways.
  • the individual windings are wound on a special shape, then baked and finally attached to the holder.
  • each individual winding is wound directly onto one coil carrier half and the two wound coil carrier halves are put together to form the saddle coil arrangement.
  • Coil carrier halves for arrangements constructed in this way have the following guide parts for the winding for receiving the saddle coil winding: a front channel on the front, further circumference of the funnel-shaped half, - a back channel on the rear, narrower circumference of half, - a plurality of left grooves connecting the two channels near the left ends thereof, and - Several right grooves that connect the two channels near their right ends, and which are angularly symmetrical to the left grooves.
  • Fig. 5A As the wire, due to the winding technology and for reasons of space, is laid differently and pulled differently at different points when producing a winding, asymmetrical windings result, which lead to aberrations. These aberrations are very exaggerated in Fig. 5A. 5A it is assumed that three hot-horizontal white lines are to be displayed on a screen 10, namely one in the middle and one at the bottom and top of the screen. Each white line consists of a red line r, a green line g and a blue line Line b together. Ideally, these lines should lie one above the other across the entire width of the screen. With conventional saddle coil arrangements, with windings wound directly on a bobbin, however, the systematic aberrations according to FIG. 5A result. The upper and lower three colored single lines are spread apart towards one side. In addition, these lines are all twisted with respect to the horizontal. The middle white line is split into the three colored single lines near the side edges (twist).
  • the invention thus follows a path that is completely contrary to the previous efforts: While these were aimed at, the best possible symmetry in the coil carrier and in To achieve winding process, the symmetry of the coil carrier halves is deliberately disturbed in the invention. Each winding is applied so that it extends to the extension point of a slot in the slot.
  • the asymmetrical coil carrier formation essentially compensates for asymmetries which arise during the winding process in that windings are inserted in one slot in a first direction, while they are inserted in the angularly symmetrically assigned other slots in the opposite direction.
  • Grooves are preferably lengthened by moving the rear front channel walls further forward than corresponds to the position of the front channel walls on the unextended grooves.
  • FIGS. 1-4 show a coil carrier half 11 of a coil carrier for a saddle coil arrangement for a cathode ray tube.
  • the entire saddle coil assembly consists of two such coil carrier halves, each of which carries a saddle coil winding.
  • a single turn 12 of such a winding is shown in dashed lines in FIGS. 1-4.
  • the overall structure of a winding corresponds to the conventional structure as explained at the beginning.
  • the coil support half 11 is funnel-shaped, with a front groove 13 on the front, further circumference of the coil support half, and a rear groove 14 on the rear, narrower circumference.
  • the front gutter 13 is delimited by a front front gutter wall 15.v and a rear front gutter wall 15.h.
  • the rear gutter 14 is delimited by a front gutter wall 16.v and a rear gutter wall 16.h.
  • Slits 17.13 are present in the rear front channel wall 15.h, and the front rear channel wall 16.v has corresponding slots 17.14. Grooves open into the channels at the locations of these slots. There are 5 left grooves 18.1l - 18.5l and 5 right grooves 18.1r - 18.5r.
  • the winding 12 shown in the figures runs counterclockwise in the rear channel 14 when half is viewed from the front, then enters the third left groove 18.3l through a slot 17.14 and passes through a slot 17.13 into the front channel 13, in which it is in the Clockwise is to the slot into which the third right groove 18.3r opens. Via this groove and the associated slot 17.14 in the front gutter wall 16.v, the wire reaches the gutter 14 again and thus to the starting point.
  • the rear front channel wall 15 lies at the horizontal end of the bobbin half 11.
  • This gradation as such is known from the prior art.
  • the step height at the location of the left slots 18.2l - 18.5l is greater than at the location of the right slots 18.2r - 18.5r.
  • the left grooves mentioned are longer than the associated right grooves mentioned. Only the first grooves on the left and right, i.e. the grooves 18.1l and 18.1r, are of the same length.
  • the front rear gutter wall 16.v is increasingly stepped to the rear.
  • the front gutter wall 16.v runs on the left side without steps.
  • the downgrading on the right-hand side means that the extensions which were achieved for the left grooves 18.4l and 18.5l compared to the corresponding right grooves by the different gradations in the rear front gutter wall 15.v are partially, but not completely removed . This is because the gradation differences in the rear front gutter wall 15.h are greater than the gradation differences in the front rear gutter wall 16.v.
  • the gradation difference for the respectively assigned grooves on the left and right on the rear front gutter wall was 1 mm, while it was only 0.5 mm for the front rear gutter wall.
  • the four grooves 18.2l - 18.5l are each extended at the location of the rear front channel wall 15.v compared to the corresponding right grooves 18.2r - 18.5r. But there is also an extension for the right grooves 18.4r and 18.5r, but not on the side of the rear front channels wall 15.h, but on the side of the front gutter wall 16.v. Windings are introduced into a coil carrier half formed in this way, as explained above with reference to the winding 12, namely in each case towards the extension point.
  • Saddle coil arrangements with coil carrier halves according to FIGS. 1-4 can be used with all types of cathode ray tubes. Depending on the intended use, it depends on whether all grooves are to be extended or only a few, and whether extensions are required both at the front and at the rear. It has been found in practice that the greatest effects are achieved by extensions at the front. The number of grooves used and the number of turns introduced also depend on the intended use.
  • the length of at least one right groove is different from the length of the angularly symmetrically assigned left groove. It is essential for saddle coil arrangements with such coil carriers that the windings are applied in such a way that they run in the groove towards the extension point of a slot.

Landscapes

  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Handcart (AREA)
EP90110983A 1989-06-24 1990-06-11 Bobine en forme de selle pour un tube à rayons cathodiques et dispositif de support pour une telle bobine Expired - Lifetime EP0405209B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3920699 1989-06-24
DE3920699A DE3920699A1 (de) 1989-06-24 1989-06-24 Sattelspulenanordnung fuer eine kathodenstrahlroehre und spulentraeger fuer eine solche anordnung

Publications (3)

Publication Number Publication Date
EP0405209A2 true EP0405209A2 (fr) 1991-01-02
EP0405209A3 EP0405209A3 (en) 1991-09-18
EP0405209B1 EP0405209B1 (fr) 1994-08-31

Family

ID=6383469

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90110983A Expired - Lifetime EP0405209B1 (fr) 1989-06-24 1990-06-11 Bobine en forme de selle pour un tube à rayons cathodiques et dispositif de support pour une telle bobine

Country Status (5)

Country Link
US (1) US5027097A (fr)
EP (1) EP0405209B1 (fr)
JP (1) JP2776618B2 (fr)
CA (1) CA2019270C (fr)
DE (2) DE3920699A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0572192A1 (fr) * 1992-05-26 1993-12-01 Murata Manufacturing Co., Ltd. Bobine de déflection du type en selle
EP0590547A1 (fr) * 1992-09-28 1994-04-06 Murata Manufacturing Co., Ltd. Corps de bobine utilisé pour le bobinage d'une bobine de déviation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08195178A (ja) * 1995-01-18 1996-07-30 Sony Corp 偏向コイル用ボビン

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0249280A1 (fr) * 1986-06-10 1987-12-16 Koninklijke Philips Electronics N.V. Système de tube à rayons cathodiques comportant une unité de déflexion électromagnétique bobinée directement sur un support et unité de déflexion électromagnétique

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3601731A (en) * 1970-01-30 1971-08-24 Ibm Coil form for a magnetic deflection york
DE2807978C2 (de) * 1978-02-24 1992-08-27 Standard Elektrik Lorenz Ag, 7000 Stuttgart Ablenkjoch für eine Kathodenstrahlröhre
DE2940931C2 (de) * 1979-10-09 1986-05-07 Siemens AG, 1000 Berlin und 8000 München Ablenkeinheit für Kathodenstrahlröhren
NL8203133A (nl) * 1982-08-09 1984-03-01 Philips Nv Afbuigjuk.
JPS6166347A (ja) * 1984-09-10 1986-04-05 Hitachi Ltd 偏向ヨ−ク
JPS62107352U (fr) * 1985-12-25 1987-07-09
NL8600933A (nl) * 1986-04-14 1987-11-02 Koninkl Philips Electronics Nv Elektromagnetische afbuigeenheid.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0249280A1 (fr) * 1986-06-10 1987-12-16 Koninklijke Philips Electronics N.V. Système de tube à rayons cathodiques comportant une unité de déflexion électromagnétique bobinée directement sur un support et unité de déflexion électromagnétique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0572192A1 (fr) * 1992-05-26 1993-12-01 Murata Manufacturing Co., Ltd. Bobine de déflection du type en selle
EP0590547A1 (fr) * 1992-09-28 1994-04-06 Murata Manufacturing Co., Ltd. Corps de bobine utilisé pour le bobinage d'une bobine de déviation
US5402091A (en) * 1992-09-28 1995-03-28 Murata Mfg. Co., Ltd. Frame body for use in winding a coil for deflection yoke

Also Published As

Publication number Publication date
JP2776618B2 (ja) 1998-07-16
CA2019270C (fr) 1999-10-12
DE3920699A1 (de) 1991-01-10
EP0405209A3 (en) 1991-09-18
CA2019270A1 (fr) 1990-12-24
DE59006952D1 (de) 1994-10-06
JPH03129646A (ja) 1991-06-03
EP0405209B1 (fr) 1994-08-31
US5027097A (en) 1991-06-25

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