US3710289A - Deflection coil - Google Patents
Deflection coil Download PDFInfo
- Publication number
- US3710289A US3710289A US00089785A US3710289DA US3710289A US 3710289 A US3710289 A US 3710289A US 00089785 A US00089785 A US 00089785A US 3710289D A US3710289D A US 3710289DA US 3710289 A US3710289 A US 3710289A
- Authority
- US
- United States
- Prior art keywords
- coil
- deflection coil
- wires
- flat
- winding
- 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
Links
- 239000003292 glue Substances 0.000 claims abstract description 6
- 238000004804 winding Methods 0.000 claims description 27
- 238000005452 bending Methods 0.000 abstract description 6
- 241001362581 Henricus Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Images
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
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
-
- 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
- VAN ROOY AGENT DEFLECTION COIL This invention relates to a deflection coil, more particularly, to a flat coil bent over, subsequent to winding, at least partly into the form of a cylindrical plane for producing a magnetic deflection field in a cathode-ray tube, around the tubular envelope of which usually two coils of said kind for the horizontal deflection and two coils for the vertical deflection are arranged in pairs diametrically opposite each other.
- Deflection coils foruse on color television camera tubes in which a separate cathode-ray tube is used for each of the three fundamental colors have to satisfy stringent requirements as to identity of the coils to be employed in one and the same apparatus, for example, for horizontal deflection, in order to avoid imaging defects. It is known to form a flat deflection coil from a plurality of relatively fitting rectangular coil portions of progressing size and to bend the set of coils, baked together to a slightly rigid unit, into the required semicylindrical shape. Without prohibitively high costs it has hitherto not been possible to wind the coil portions of normal wire with such complete regularity that subsequent bending of the coil does not disturb this regularity so that in this way the three accurately identical coil pairs cannot be obtained.
- An object of the invention is to provide a structure which does permit of doing so.
- the coil in accordance with the invention is characterized in that the coil to be bent comprises a plurality of glue-coated, insulated wires simultaneously wound side by side without intermediate insulating layers, the turns of each wire each forming a flat spiral.
- the spirals are connected outside the coil in known manner either in series, in parallel or in series-parallel. Winding is completely regular since it does not comprise crossing winding portions and by using wire of uniform thickness accurately identical coils can be obtained at a low cost. It also has been found that the regularity of the coils will not be disturbed by subsequent bending thereof.
- FIG. 1 illustrates the winding of a deflection'coil in accordance with the invention
- FIG. 2 is a side elevation of such a coil
- FIG. 3 shows the final shape of the coil.
- FIG. 1 shows somewhat simplified the winding of a flat, rectangular coil (see also FIG. 2) comprising a number, in this case four, of insulated wires I wound side by side without insulating intermediate layers.
- wires provided with a preferably thermoplastic glue layer which is solid at room temperature, are wound from four supply reels 3 (one of them is shown in FIG. 1) in a jig formed by a rectangular winding mandril 5 and two detachable flanges 7.
- the distance between the flanges (for example, about 2 mms) is equal to four times the wire thickness inclusive of insulation and glue layer.
- the four wires (shown in a sectional view in FIG. 1 in the winding jig) coil up to form four flat spirals, which, provided the wire thickness is constant, are completely regular even with a fairly large number of layers.
- the coil After baking the coil into a single unit, which may be performed in a conventional manner by passing a current pulse through each of the four spirals in the winding jig, the coil can be bent in a second jig into the desired cylindrical shape (see FIG. 3) for matching a camera tube 11.
- the four spirals may be connected in series or in parallel, or they may be electrically interconnected in a different way.
- a CRT deflection coil having a partially cylindrical shape comprising, a plurality of glue-coated insulated wires that are located side by side without an intermediate insulating layer therebetween so that each wire forms a flat spiral winding with an aperture and a plurality of turns, each of said apertures being substantially identical, said windings being mounted together with the apertures in alignment to form an integral deflection coil unit having a plurality of identical concentric flat spirals disposed side by side, and wherein the flat coil composed of the flat spiral windings has the shape of a partial cylinder.
- each of the wires that make up a spiral winding have a cylindrical cross-section, said wires being adapted to be connected together in a plurality of configurations.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
- Coil Winding Methods And Apparatuses (AREA)
- Insulated Conductors (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
Deflection coil, obtained by bending into a part-cylindrical shape a coil comprising a plurality of glue-coated insulated wires simultaneously wound side by side without insulating intermediate layers, each wire forming a flat spiral.
Description
United States Patent 11 1 Pax et al.
1451 Jan. 9, 1973' 541' DEFLECTION COIL' 3,412,354 11/1968 Sattler ..336/205 3,423,706' 1 1969 S t I. 335 213 lnventorsi Wilhelmus Petlfus Johannes Fran- 2 949 593 33 ciscus Pax; Henricus Johannes an 3,488,541 1/1970 Barbin 335/213 Rooy, bbth 0f Emmasingel, Eind- 3,396,356 8/1968 Whipplem" 336/206 hoven, Netherlands 3,007,087 10/1961 COrpew 335/213 3,088,200 5/l963 Birdsall et a1... ....219/i49 ASSIgHeeI Phillps o p" New York, 3,234,632 2/1966 Marley ..336/200 [22] 1 Filed: 1970 Primary Examiner-George Harris [2]] Appl. No.: 89,785 Att0rneyFrank R. Trifari 57 T [30] Foreign Application Priority Data 1 ABS RACT Deflection-coil, obtained by bending into a part-cylin- Dec.4, 1969 Netherlands ..69i8204 drica] shape a il comprising a lurality of glue- 1 7 1 coated insulated wires simultaneously wound side by U.S. side without insulating intermediate layers each wire [51] :InL Cl .1101! 5/00 forming a flat spiral. [58] Field of Search .,....3'36/186, 206, 205'; 335/213,
' I 3 Claims, 3 Drawing Figures [56] References Cited UNITED STATES PATENTS 2,167,379 I 7/1939 Tolson, ..'.....3l3/76 PATENTED JAN 9 I975 H 2% F g f v o F E s E Q IN Vlz'N'l'ORS WILHELMUS RJ.F. PAX HENRICUS J. VAN ROOY AGENT DEFLECTION COIL This invention relates to a deflection coil, more particularly, to a flat coil bent over, subsequent to winding, at least partly into the form of a cylindrical plane for producing a magnetic deflection field in a cathode-ray tube, around the tubular envelope of which usually two coils of said kind for the horizontal deflection and two coils for the vertical deflection are arranged in pairs diametrically opposite each other. By winding the coil in a flat shape and by subsequently bending it into the cylindrical shape the winding operation is simplified.
Deflection coils foruse on color television camera tubes in which a separate cathode-ray tube is used for each of the three fundamental colors, have to satisfy stringent requirements as to identity of the coils to be employed in one and the same apparatus, for example, for horizontal deflection, in order to avoid imaging defects. It is known to form a flat deflection coil from a plurality of relatively fitting rectangular coil portions of progressing size and to bend the set of coils, baked together to a slightly rigid unit, into the required semicylindrical shape. Without prohibitively high costs it has hitherto not been possible to wind the coil portions of normal wire with such complete regularity that subsequent bending of the coil does not disturb this regularity so that in this way the three accurately identical coil pairs cannot be obtained.
An object of the invention is to provide a structure which does permit of doing so.
The coil in accordance with the invention is characterized in that the coil to be bent comprises a plurality of glue-coated, insulated wires simultaneously wound side by side without intermediate insulating layers, the turns of each wire each forming a flat spiral. The spirals are connected outside the coil in known manner either in series, in parallel or in series-parallel. Winding is completely regular since it does not comprise crossing winding portions and by using wire of uniform thickness accurately identical coils can be obtained at a low cost. It also has been found that the regularity of the coils will not be disturbed by subsequent bending thereof.
It should be noted that the bifilar winding of saddleshaped and toroidal deflection coils is known. However, the coils concerned there assume the fairly complicated, final shape during the winding operation itself so that they are not first wound in a simple flat form. The regularity of winding of these coils cannot be improved by multifilar winding and the purposes aimed at are quite different.
There is furthermore known a coil for other purposes than deflection which is wound from an insulating strip having a plurality of parallel printed conductors. The width of the strip is comparatively large and this structure is intended for use in coils having a comparatively large axial size, which coils need not be bent after windmg.
The invention will be described more fully with reference to the accompanying drawing, in which:
FIG. 1 illustrates the winding of a deflection'coil in accordance with the invention,
FIG. 2 is a side elevation of such a coil, and
FIG. 3 shows the final shape of the coil.
FIG. 1 shows somewhat simplified the winding of a flat, rectangular coil (see also FIG. 2) comprising a number, in this case four, of insulated wires I wound side by side without insulating intermediate layers. The
wires, provided with a preferably thermoplastic glue layer which is solid at room temperature, are wound from four supply reels 3 (one of them is shown in FIG. 1) in a jig formed by a rectangular winding mandril 5 and two detachable flanges 7. The distance between the flanges (for example, about 2 mms) is equal to four times the wire thickness inclusive of insulation and glue layer. The four wires (shown in a sectional view in FIG. 1 in the winding jig) coil up to form four flat spirals, which, provided the wire thickness is constant, are completely regular even with a fairly large number of layers. Furthermore, there is no need to take special precautions because the wires do not cross each other at any place and the position of each turn is determined by the winding jig and the adjacent windings. It is preferred to wind one or more portions, in this case the second half of the coil,about four auxiliary pins 9 passed through the winding jig, shown in in FIG. 2. The coil then more nearly approaches the rectangular shape which provides an optimum magnetic field.
After baking the coil into a single unit, which may be performed in a conventional manner by passing a current pulse through each of the four spirals in the winding jig, the coil can be bent in a second jig into the desired cylindrical shape (see FIG. 3) for matching a camera tube 11. The four spirals may be connected in series or in parallel, or they may be electrically interconnected in a different way.
The secondary deformations involved in bending the coil into the cylindrical shape, for example, by relative shift of the spirals appear to remain within the tolerances of accuracy acceptable for the purpose concerned in the form of winding described with the small coil thickness required for the kind of deflection coils concerned.
What is claimed is:
l. A CRT deflection coil having a partially cylindrical shape comprising, a plurality of glue-coated insulated wires that are located side by side without an intermediate insulating layer therebetween so that each wire forms a flat spiral winding with an aperture and a plurality of turns, each of said apertures being substantially identical, said windings being mounted together with the apertures in alignment to form an integral deflection coil unit having a plurality of identical concentric flat spirals disposed side by side, and wherein the flat coil composed of the flat spiral windings has the shape of a partial cylinder.
2. A deflection coil as claimed in claim 1 wherein each of the wires that make up a spiral windinghave a cylindrical cross-section, said wires being adapted to be connected together in a plurality of configurations.
3. A deflection coil as claimed in claim 1 wherein each of the wires that make up a spiral winding have a substantially identical cylindrical cross-section.
Claims (3)
1. A CRT deflection coil having a partially cylindrical shape comprising, a plurality of glue-coated insulated wires that are located side by side without an intermediate insulating layer therebetween so that each wire forms a flat spiral winding with an aperture and a plurality of turns, each of said apertures being substantially identical, said windings being mounted together with the apertures in alignment to form an integral deflection coil unit having a plurality of identical concentric flat spirals disposed side by side, and wherein the flat coil composed of the flat spiral windings has the shape of a partial cylinder.
2. A deflection coil as claimed in claim 1 wherein each of the wires that make up a spiral winding have a cylindrical cross-section, said wires being adapted to be connected together in a plurality of configurations.
3. A deflection coil as claimed in claim 1 wherein each of the wires that make up a spiral winding have a substantially identical cylindrical cross-section.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL6918204.A NL160970C (en) | 1969-12-04 | 1969-12-04 | METHOD OF MANUFACTURING A DEFLECTION COIL. |
Publications (1)
Publication Number | Publication Date |
---|---|
US3710289A true US3710289A (en) | 1973-01-09 |
Family
ID=19808546
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00089785A Expired - Lifetime US3710289A (en) | 1969-12-04 | 1970-11-16 | Deflection coil |
Country Status (5)
Country | Link |
---|---|
US (1) | US3710289A (en) |
JP (1) | JPS4927966B1 (en) |
DE (1) | DE2053926C3 (en) |
GB (1) | GB1318929A (en) |
NL (1) | NL160970C (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3878490A (en) * | 1974-09-03 | 1975-04-15 | Gen Electric | Direct-wound, precision deflection yoke with adhesive coated core |
FR2448786A1 (en) * | 1979-02-06 | 1980-09-05 | Bauzhis Albertas | Vidicon tube deflection coil construction - has horizontal and vertical deflection coils at right angles, with diagonal transition zone forming variable cross=section thickness |
EP0159065A1 (en) * | 1984-03-21 | 1985-10-23 | Koninklijke Philips Electronics N.V. | Method of manufacturing a saddle-shaped deflection coil for a picture display tube and deflection system having saddle-shaped deflection coils |
EP0558274A1 (en) * | 1992-02-24 | 1993-09-01 | Murata Manufacturing Co., Ltd. | Saddle type deflection coil |
US20080186121A1 (en) * | 2005-09-08 | 2008-08-07 | Sumida Corporation | Coil Device, Composite Coil Device, and Transformer Device |
CN103996515A (en) * | 2010-11-25 | 2014-08-20 | 乾坤科技股份有限公司 | Inductor and method of producing same |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8300544A (en) * | 1983-02-14 | 1984-09-03 | Philips Nv | METHOD FOR MANUFACTURING A SADDLE COIL |
NL8300543A (en) * | 1983-02-14 | 1984-09-03 | Philips Nv | ELECTROMAGNETIC DEFLECTOR. |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2167379A (en) * | 1936-02-28 | 1939-07-25 | Rca Corp | Cathode ray tube deflecting device |
US2949593A (en) * | 1957-05-09 | 1960-08-16 | Reynolds Metals Co | Electrical coil formed from multilayer strip conductor |
US3007087A (en) * | 1958-06-04 | 1961-10-31 | Gen Dynamics Corp | Electromagnetic deflection coil |
US3088200A (en) * | 1960-11-10 | 1963-05-07 | Dale H Birdsall | Magnetic shaping process |
US3234632A (en) * | 1955-08-25 | 1966-02-15 | Hazeltine Research Inc | Method of manufacturing magnetic deflection yokes |
US3396356A (en) * | 1965-11-01 | 1968-08-06 | Gen Electric | Cross-wound open mesh coil |
US3412354A (en) * | 1963-02-18 | 1968-11-19 | Westinghouse Electric Corp | Adhesive coated electrical conductors |
US3423706A (en) * | 1966-10-28 | 1969-01-21 | Atomic Energy Commission | Multipole magnet having a sequentially shim stepped coil configuration |
US3488541A (en) * | 1966-04-06 | 1970-01-06 | Rca Corp | Geodesic electromagnetic deflection yoke |
-
1969
- 1969-12-04 NL NL6918204.A patent/NL160970C/en not_active IP Right Cessation
-
1970
- 1970-11-03 DE DE2053926A patent/DE2053926C3/en not_active Expired
- 1970-11-16 US US00089785A patent/US3710289A/en not_active Expired - Lifetime
- 1970-12-01 GB GB5701670A patent/GB1318929A/en not_active Expired
- 1970-12-01 JP JP45105495A patent/JPS4927966B1/ja active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2167379A (en) * | 1936-02-28 | 1939-07-25 | Rca Corp | Cathode ray tube deflecting device |
US3234632A (en) * | 1955-08-25 | 1966-02-15 | Hazeltine Research Inc | Method of manufacturing magnetic deflection yokes |
US2949593A (en) * | 1957-05-09 | 1960-08-16 | Reynolds Metals Co | Electrical coil formed from multilayer strip conductor |
US3007087A (en) * | 1958-06-04 | 1961-10-31 | Gen Dynamics Corp | Electromagnetic deflection coil |
US3088200A (en) * | 1960-11-10 | 1963-05-07 | Dale H Birdsall | Magnetic shaping process |
US3412354A (en) * | 1963-02-18 | 1968-11-19 | Westinghouse Electric Corp | Adhesive coated electrical conductors |
US3396356A (en) * | 1965-11-01 | 1968-08-06 | Gen Electric | Cross-wound open mesh coil |
US3488541A (en) * | 1966-04-06 | 1970-01-06 | Rca Corp | Geodesic electromagnetic deflection yoke |
US3423706A (en) * | 1966-10-28 | 1969-01-21 | Atomic Energy Commission | Multipole magnet having a sequentially shim stepped coil configuration |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3878490A (en) * | 1974-09-03 | 1975-04-15 | Gen Electric | Direct-wound, precision deflection yoke with adhesive coated core |
FR2448786A1 (en) * | 1979-02-06 | 1980-09-05 | Bauzhis Albertas | Vidicon tube deflection coil construction - has horizontal and vertical deflection coils at right angles, with diagonal transition zone forming variable cross=section thickness |
EP0159065A1 (en) * | 1984-03-21 | 1985-10-23 | Koninklijke Philips Electronics N.V. | Method of manufacturing a saddle-shaped deflection coil for a picture display tube and deflection system having saddle-shaped deflection coils |
EP0558274A1 (en) * | 1992-02-24 | 1993-09-01 | Murata Manufacturing Co., Ltd. | Saddle type deflection coil |
US5446432A (en) * | 1992-02-24 | 1995-08-29 | Murata Mfg. Co., Ltd. | Saddle type deflection coil |
US20080186121A1 (en) * | 2005-09-08 | 2008-08-07 | Sumida Corporation | Coil Device, Composite Coil Device, and Transformer Device |
US7443278B2 (en) * | 2005-09-08 | 2008-10-28 | Sumida Corporation | Coil device, composite coil device, and transformer device |
CN103996515A (en) * | 2010-11-25 | 2014-08-20 | 乾坤科技股份有限公司 | Inductor and method of producing same |
Also Published As
Publication number | Publication date |
---|---|
DE2053926A1 (en) | 1971-06-09 |
GB1318929A (en) | 1973-05-31 |
DE2053926B2 (en) | 1977-09-08 |
JPS4927966B1 (en) | 1974-07-23 |
NL160970B (en) | 1979-07-16 |
DE2053926C3 (en) | 1978-04-20 |
NL6918204A (en) | 1971-06-08 |
NL160970C (en) | 1979-12-17 |
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