US3835426A - Winding crown for inline gun deflection yoke - Google Patents

Winding crown for inline gun deflection yoke Download PDF

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Publication number
US3835426A
US3835426A US00409040A US40904073A US3835426A US 3835426 A US3835426 A US 3835426A US 00409040 A US00409040 A US 00409040A US 40904073 A US40904073 A US 40904073A US 3835426 A US3835426 A US 3835426A
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US
United States
Prior art keywords
yoke
ears
crown
voids
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
US00409040A
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English (en)
Inventor
C Torsch
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.)
GTE Sylvania Inc
Original Assignee
GTE Sylvania Inc
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 GTE Sylvania Inc filed Critical GTE Sylvania Inc
Priority to US00409040A priority Critical patent/US3835426A/en
Application granted granted Critical
Publication of US3835426A publication Critical patent/US3835426A/en
Priority to FR7433039A priority patent/FR2249432A1/fr
Priority to BE149255A priority patent/BE820754A/fr
Priority to CA212,138A priority patent/CA1012599A/en
Assigned to NORTH AMERICAN PHILIPS CONSUMER ELECTRONICS CORP. reassignment NORTH AMERICAN PHILIPS CONSUMER ELECTRONICS CORP. ASSIGNS ITS ENTIRE RIGHT TITLE AND INTEREST, UNDER SAID PATENTS AND APPLICATIONS, SUBJECT TO CONDITIONS AND LICENSES EXISTING AS OF JANUARY 21, 1981. (SEE DOCUMENT FOR DETAILS). Assignors: GTE PRODUCTS CORPORATION A DE CORP.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H01J29/764—Deflecting by magnetic fields only using toroidal windings

Definitions

  • This invention relates to deflection yokes for color cathode ray tubes and particularly to toroidally wound deflection yokes especially suitable for use with inline gun, color cathode ray tubes.
  • Color cathode ray tubes as well as other black and white cathode ray tubes employ deflection yokes positioned astride the various electron beams to horizontally and vertically deflect the beam or beams so that they properly scan the screen of the cathode ray tube.
  • deflection yokes There are generally two types of yokes in use, one being known as a saddle yokeand the other a toroidal yoke.
  • This invention as noted above, relates particularly to toroidally wound yokes.
  • These yokes comprise a substantially frusto-conical core having wound thereabout a plurality of turns of wire in the form of pairs of horizontal and vertical deflection coils.
  • the yokes are generally provided with front and rear crowns. These crowns consist of a substantially circumferential piece of electrically insulating material provided with radial circumferential grooves for engaging and maintaining proper separation between various turns of wire.
  • the front crown engages the widest part of the frustoconical core and the rear winding crown is positioned at the narrow end.
  • toroidal yokes had winding crowns with no projecting elements. These yokes were verydifflcult to position and wind. Later improvements provided projecting ears or tabs on the crowns on both the horizontal and vertical axes of the yoke as an aid to the gripping arms on winding machines. An example of such ears can be found in US.
  • the yoke provided for in the above-named patent is a toroidal yoke designed specifically for oper' ation with delta gun color cathode ray tubes.
  • a delta gun cathode ray tube the guns are aligned at the apices of an equilateral triangle.
  • a deflection yoke for an inline, multiple electron gun, color cathode ray tube by the provision of a yoke which comprises a hollow substantially frusto-conical core having a plurality of turns of wire toroidally wound thereabout to form a pair of horizontal deflection coils and a pair of vertical deflection coils. These coils are provided with predetermined voids therebetween.
  • Thefront and rear crowns which are provided respectively at the front or wide end of the core and the rear or narrow end of the core are provided with a plurality of wire receiving grooves. These grooves extend radially circumferentially about the crown except for a plurality of areas which are provided with a plurality of projecting ears.
  • the ears on the front crown are positioned in said predetermined voids.
  • the ears on the rear crown are positioned substantially coincident with the ears on the front crown.
  • the ears of the crown of the instant invention will be displaced from both the horizontal and vertical axes.
  • the positioning of the ears in the predetermined void areas greatly enhances and simplifies the necessary winding operations. This results in a much more efficient and more economical deflection yoke.
  • FIG. 1 is a perspective illustration of a toroidal yoke prepared in accordance with this invention
  • FIG. 2 is a plan view of the front crown employed with the yoke of FIG. 1;
  • FIG. 3 is a plan view of the rear crown employed with the yoke of FIG. 1;
  • FIG. 4 is a diagrammatic perspective view of the yoke employed with an inline gun cathode ray tube.
  • the deflection yoke 10 comprises a substantially frusto-conical core 12 of a magnetic permeable material and is provided with a front crown 14 and a rear crown 16. While the winding grooves can be provided within the core material itself they are generally formed in a separate piece of electrically insulating material. The material is in the form of an annular ring and the winding grooves extend radially circumferentially thereabout.
  • the toroidally wound turns of wire 18 form horizontal and vertical deflection coils, there being a pair of each.
  • Predetermined voids 20 exist within the respective horizontal and vertical deflection coils. In this case there are four such voids.
  • Projecting ears or tabs 22 Positioned within the voids are projecting ears or tabs 22, these generally being formed of the same material as the crown, although this is not necessarily so.
  • the tabs or ears 22 are offset from both the vertical axis, labeled V-V, and the horizontal axis, labeled H-l-l'.
  • the area between any two ears 22 is provided with a plurality of wire receiving grooves 24. These grooves act to engage and separate the turns of the coils and maintain the proper spacing therebetween.
  • the voids are angularly determined from the yoke configuration and will generally be between 35 and 40 off the vertical axis V-V, where the inline guns are grouped in a horizontal line along the major screen axis.
  • the rear winding crown 16 is illustrated in plan view in FIG. 3.
  • the areas between the tabs or ears 26 are also provided with a plurality of wire receiving grooves 28.
  • the ears on the rear piece will not necessarily be exactly coincident with the ears 22 on front crown 14. This lack of coincidence can occur because of the difference in diameter between the pieces and winding gap asymmetry relative to the ears.
  • the yoke is shown in its approximate position upon the neck of a color cathode ray tube 28. It will be seen that the electron gun configuration ofthe tube shown at 30 is inline; that is, all three guns of the tube are arrayed on a single horizontal line.
  • the yoke provided by this invention provides a simple and economical solution to an inherent problem associated with the winding of such yokes.
  • a deflection yoke for an inline, multiple electron gun color cathode ray tube comprising: a hollow substantially frusto-conical core having a plurality of turns of wire toroidally wound thereabout to form a pair of horizontal deflection coils and a pair of vertical deflection coils, said coils being provided with predetermined voids; and front and rear crowns formed respectively at the front and rear of said yoke core, said crowns each being provided with a plurality of wire receiving grooves extending radially circumferentially thereabout and having a plurality of projecting ears, said ears on said front crown being positioned in said predetermined voids and said ears on said rear crown being substantially coincident with said ears on said front crown.

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US00409040A 1973-10-24 1973-10-24 Winding crown for inline gun deflection yoke Expired - Lifetime US3835426A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US00409040A US3835426A (en) 1973-10-24 1973-10-24 Winding crown for inline gun deflection yoke
FR7433039A FR2249432A1 (fr) 1973-10-24 1974-10-01
BE149255A BE820754A (fr) 1973-10-24 1974-10-07 Couronne d'enroulement pour bobinage de deviation dans le cas de canons alignes
CA212,138A CA1012599A (en) 1973-10-24 1974-10-23 Winding crown for inline gun deflection yoke

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00409040A US3835426A (en) 1973-10-24 1973-10-24 Winding crown for inline gun deflection yoke

Publications (1)

Publication Number Publication Date
US3835426A true US3835426A (en) 1974-09-10

Family

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Family Applications (1)

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US00409040A Expired - Lifetime US3835426A (en) 1973-10-24 1973-10-24 Winding crown for inline gun deflection yoke

Country Status (4)

Country Link
US (1) US3835426A (fr)
BE (1) BE820754A (fr)
CA (1) CA1012599A (fr)
FR (1) FR2249432A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2735749A1 (de) * 1976-08-12 1978-02-16 Videon Sa Toroid-ablenkspulenwicklung fuer eine inline-farbbildroehre mit grossem ablenkwinkel und grossem bildschirm
US4117432A (en) * 1975-01-17 1978-09-26 Denki Onkyo Co., Ltd. Deflection yoke with unitary coil frame
US4152684A (en) * 1976-10-21 1979-05-01 U.S. Philips Corporation Device for the magnetic deflection of electron beams
US5838098A (en) * 1996-07-15 1998-11-17 Sony Corporation Deflecting apparatus with one piece core and one piece coil bobbin

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111609A (en) * 1959-03-16 1963-11-19 Gen Electric Deflection yoke and method of making
US3569881A (en) * 1969-08-19 1971-03-09 Sylvania Electric Prod Combined deflection yoke and housing
US3721930A (en) * 1972-01-14 1973-03-20 Rca Corp Deflection yoke for use with in-line electron guns
US3757224A (en) * 1972-05-01 1973-09-04 Gte Sylvania Inc Toroidal yoke and core assembly therefor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111609A (en) * 1959-03-16 1963-11-19 Gen Electric Deflection yoke and method of making
US3569881A (en) * 1969-08-19 1971-03-09 Sylvania Electric Prod Combined deflection yoke and housing
US3721930A (en) * 1972-01-14 1973-03-20 Rca Corp Deflection yoke for use with in-line electron guns
US3757224A (en) * 1972-05-01 1973-09-04 Gte Sylvania Inc Toroidal yoke and core assembly therefor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4117432A (en) * 1975-01-17 1978-09-26 Denki Onkyo Co., Ltd. Deflection yoke with unitary coil frame
DE2735749A1 (de) * 1976-08-12 1978-02-16 Videon Sa Toroid-ablenkspulenwicklung fuer eine inline-farbbildroehre mit grossem ablenkwinkel und grossem bildschirm
US4152684A (en) * 1976-10-21 1979-05-01 U.S. Philips Corporation Device for the magnetic deflection of electron beams
US5838098A (en) * 1996-07-15 1998-11-17 Sony Corporation Deflecting apparatus with one piece core and one piece coil bobbin

Also Published As

Publication number Publication date
CA1012599A (en) 1977-06-21
BE820754A (fr) 1975-02-03
FR2249432A1 (fr) 1975-05-23

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Legal Events

Date Code Title Description
AS Assignment

Owner name: NORTH AMERICAN PHILIPS CONSUMER ELECTRONICS CORP.

Free format text: ASSIGNS ITS ENTIRE RIGHT TITLE AND INTEREST, UNDER SAID PATENTS AND APPLICATIONS, SUBJECT TO CONDITIONS AND LICENSES EXISTING AS OF JANUARY 21, 1981.;ASSIGNOR:GTE PRODUCTS CORPORATION A DE CORP.;REEL/FRAME:003992/0284

Effective date: 19810708

Owner name: NORTH AMERICAN PHILIPS CONSUMER ELECTRONICS CORP.,

Free format text: ASSIGNS ITS ENTIRE RIGHT TITLE AND INTEREST, UNDER SAID PATENTS AND APPLICATIONS, SUBJECT TO CONDITIONS AND LICENSES EXISTING AS OF JANUARY 21, 1981.;ASSIGNOR:GTE PRODUCTS CORPORATION A DE CORP.;REEL/FRAME:003992/0284

Effective date: 19810708