JPS58218290A - Convergence device for in-line type color cathode ray tube - Google Patents

Abstract

PURPOSE:To adjust very simply a dynamic convergence, by matching or crossing diagonally the moving directions of beams located on both sides between two ring like coils by the effect of a magnetic field generated by the two ring-like coils. CONSTITUTION:A ring-like core 13 is provided with a ring-like bobbin 14 having 12 segments 15 which divide the core in 12 sections in a circumferential direction. Two pairs of 6-pole ring-like coils 12 are alternately arranged and wound for every section between the segments 15 through the bobbin 14. Two pairs of 4-pole coils 12 are alternately arranged and wound, one for every section and the other for every two sections. The center position of the magnetic field generation between each pair of the 6-pole and 4-pole coils 12 are set with an equal angle interval, and the moving direction of beams, which are located on both sides, out of beams which are moved by the effect of a magnetic field generated by the coils 12 and arrayed in in-line shape, are agreed or crossed diagonally each other between the coils 12.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a convergence device for an in-line color cathode ray tube, and more particularly to the winding shape of a ring-shaped coil used in the convergence device.

For example, Tokuko Sho 51-4815 Publication or Tokuko Sho F
As described in Japanese Patent No. 1-45936, in-line type color cathode ray tubes have problems due to tolerances in each component during manufacturing, or because each electron beam is not properly positioned relative to the tube. Depending on the type of vertical and horizontal deflection fields used, if any, different misconvergence results.

For this reason, in the invention described in Japanese Patent Publication No. 51-4815, a pair of E-shaped cores are arranged opposite to each other in the neck part of a color cathode ray tube, and a required correction coil is wound around each leg of both cores.
Horizontally or vertically synchronized correction currents are passed through these correction coils to correct misconvergence. However, when a pair of E-shaped cores are used in this way, there is a drawback that the convergence device becomes large in size, and the manufacturing process is complicated and expensive due to the large number of parts.

In order to eliminate the above-mentioned drawbacks, the present applicant fixed to a terminal board a ring-shaped coil for dynamic convergence, in which two sets of four-pole coils and two six-pole coils were wound toroidally around a ring-shaped core, and We proposed a convergence device for color cathode ray tubes that is compact and simple in structure, in which the device is attached to a device holder equipped with a ring magnet for static convergence.

The present invention provides a convergence device having such a configuration, in which two sets of four poles each are wound around a ring-shaped core,
The magnetic field generation center positions of each arrangement of six-pole ring-shaped foils are set at equal angular intervals, and the beam moves due to the action of the magnetic field generated by both ring-shaped coils (both sides of the beams arranged inline). The purpose of the present invention is to provide a convergence device in which the directions of moving force of a beam extending from one position to the other are made to match between both ring-shaped coils.

Hereinafter, one embodiment of the present invention will be described in detail using the drawings. In Figures 1 and 2, 1 indicates a device holder, and the front part of the device holder 1 is spread out in the shape of a morning glory, and a plurality of approximately ring-shaped terminal plate attachment parts 2 are provided at the tip (not shown in the figure). The rear part of the 6□" device holder +1, which is fixed with a loop, is used to fix the convergence device to the neck of the in-line color cathode ray tube. 1 luW! (6 pieces in the figure) 6 and 7 are pairs of ring magnets rotatably mounted on the device holder 1, and these six pairs of ring magnets 5 to 7
are magnetized into, for example, two poles, four poles, and six poles, and are used for purity and static convergence. 8 indicates a ring magnet lock member; 1. Rotate each ring magnet 5 to 7 with the lock member 8 loosened, and rotate the ring magnets 5 to 7.
After the alignment, the ring magnets 5 to 7 are fixed at optimal positions by tightening the protrusion member 8. 9
．． 10 and 11 indicate spacers arranged between ring magnets 5 to 7. Reference numeral 12 denotes a ring-shaped coil for dynamic convergence, and as shown in FIGS. A terminal board wound in a toroidal shape and fixed to the terminal board mounting part 2 via screws B? It is located at the center mouth of 0. A bobbin 14 attached to one side 13a of the ring-shaped core 13
The winding position of the coil 12 is regulated on the surface of the bobbin body 14a, and 12 protruding segments 15, which are formed by equally dividing the ring-shaped core 13 (bobbin body 14a) into 12 sections in the circumferential direction, radiate from the surface of the bobbin body 14a. Twelve protruding columns 1 are formed at approximately equal intervals in the axial direction, and extend from the inner diameter part of the bobbin body 14a to the segment 15 and extend in the axial direction along the inner diameter surface of the core 13.
6 is formed protrudingly. In addition, bobbin 1 for ring-shaped coil
On the outer periphery of the bobbin body 14a of No. 4, 12 wiring processing portions/terminal board fixing portions 19 are continuously integrated from the tip of each segment 15 and are provided with four wiring processing portions 17 and terminal board fixing protrusions 18. is formed. 2'0 is a terminal pin attached to the terminal plate T.

Next, the winding of the ring-shaped coil 12 will be discussed. The ring-shaped coil 12 is constructed by first winding two sets of six-pole ring-shaped coils (hereinafter referred to as six-pole coils) 12- around a ring-shaped bobbin 14 on which a ring-shaped core 13 is arranged, and then winding two sets of six-pole ring-shaped coils (hereinafter referred to as six-pole coils). shaped coil (hereinafter referred to as 4-pole coil) 12
．． It is formed by winding two sets of. At this time, the ring-shaped bobbin 14 is divided into 12 equal parts by the segments 15, so there are 12 coil winding parts. 6t! ! 8
Coil 12. As shown in FIG. 5, 12 coil winding portions 21. ~21%, first every other winding, i.e. winding section 21. ．． 21 reference, 21s, 21v,
Spring rotation of the 6-pole coil 12 of the 1st set (marked with O) was performed in the 21st meeting 211I.
, 21-, 2110. A second set of 6-pole coil 12u (marked with X) is wound around 2111. As a result, the first set of six-pole coils 1) are wound with a 30° shift. This 6-pole coil 12. The magnetic field generated by 1. is as shown in FIG. FIG. 6(A) shows the first set of six-pole coil 12.
1 (marked with a circle), the beams located on both sides of the beams arranged in-line are moved vertically. Figure 6 (B) shows the second set of 6-pole coils 121m ( The magnetic field that rises at the point (
are the first set of 6-pole coil 12□ and the second set of 6-pole coil 12
This is a combination of the magnetic fields generated by the 6-pole coil 126, and the magnetic field generation center positions of each arrangement of the six-pole coil 126 are formed at equal angular intervals of 60° corresponding to the winding position of the coil. be. Of course, the N and 8 poles can be reversed.

After winding two sets of 6-pole coils 12.1.126 times, L
111 4-pole coil 124 is wound around 6-pole coil 12.
j2 "203 The magnetic field generation center positions between each set are at equal angular intervals 11,", l'"' (as shown in FIG. 7, the windings s21. and 211.degree. The first set of 4-pole coil 124+ (marked O) is wound around 21st and 21st, 211 and 21□, and the remaining winding parts 211.214.21t and 211-
A second set of 4-pole coil 124* (marked with an X) is wound around. As a result, the first set of four-pole coil 12. , (O mark) and the second
The set of four-pole coils 12t* (marked by x) are wound with a substantially 45° offset. This 4-pole coil 12. The magnetic field generated by this is shown in FIG. Figure 8 (A)
is the magnetic field due to the first set of 4-pole Konin v124+ (marked O),
It moves the beams located on both sides in the vertical direction, and Fig. 8 (B) shows the second set of 4-pole coils 124m (
The beams located on both sides are moved in the left-right direction by a magnetic field generated by X mark), and FIG. 8(C) shows a first set of 4-pole coils 124I and a second set of 4-pole coils 124. A combination of the magnetic fields generated by 1. And with this,
The magnetic and field generation center positions of each arrangement of the four-pole coil 124 are formed at equal angular intervals of 0,000 mm, corresponding to the winding position of the coil. Even in the case of 1'□1, N and 8% may be reversed.

The six-pole coil 12. and the four-pole coil 124 are arranged such that the moving direction of the beams located on both sides of the six-pole coil 12. The four-pole coil 126 is wound in a predetermined position, for example, at the winding positions shown in FIGS. 5 and 7, so that they coincide or are perpendicular to each other. Here, 4
In the case of the pole coils 124, the first set of coils 124. The winding width is twice the i width of the second set of coils 1241, and if the coils are wound at the same pitch, the number of turns is twice as large.In order to make the inductance of both sets of coils equal, Adjustment means is provided. In addition, in order to wind the coils of both sets with the same inductance in advance, the number of turns of the first set of coils 1241 should be changed to the number of turns of the second set of coils 1241. ! It is sufficient if the number of turns is several more than the number of turns.

In the in-line color cathode ray tube convergence device having such a configuration, the ring-shaped coil 12 wound in a predetermined shape around the ring-shaped core 13 is fixed to the terminal plate mounting portion 2 via the screws B of the terminal plate T. Place it in the center opening. After that, a predetermined current is passed through the ring-shaped coil 12 to form four magnetic poles and six magnetic poles, respectively. At this time, the 4-pole coil 124 and the 6t# coil 12. In both cases, the magnetic field generation center positions of each cabinet are formed at equal angular intervals, and the moving directions of the beams located on both sides are made to match or orthogonally cross between both coils, and the beams located on both sides are 4 Due to the magnetic field of the 12-pole coil/I/12 coil, the coil always moves with orthogonality in the vertical direction or the horizontal direction (arrow direction), as shown in Fig. 6 (C) and Fig. 8 (C). (shift), and finally the dynamic convergence is adjusted.

In one embodiment of the present invention, it has been described that the static convergence is adjusted by using a ring magnet magnetized to 4.6 poles.
A similar effect can be obtained by passing a direct current through the ring-shaped coil of the present invention. Furthermore, by passing a direct current and a parabolic current through the ring-shaped coil of the present invention, it is possible to perform both static and dynamic convergence, and in this case, the 4-pole and 6-pole ring magnets can be omitted. It is something.

Furthermore, the shape of the ring-shaped bobbin is not limited to the shape of the embodiment as long as it has a configuration in which the ring-shaped core is equally divided into 12 sections in the circumferential direction.

As described above, according to the convergence device for a color cathode ray tube of the present invention, the core is attached to the ring-shaped core once in the circumferential direction.
A ring-shaped bobbin having 12 segments equally divided into two sections is provided, and two sets of six-pole ring-shaped coils are alternately arranged and wound for each section between the segments via the ring-shaped bobbin. Along with 2 sets of 4F#! The ring-shaped coils are arranged and wound alternately with one section in one set and two sections in the other set, and the magnetic field generation center position between each phase of the 6-pole and 4-pole ring coils is set at equal angles. The moving directions of the beams located on both sides of the beam are aligned between the two ring coils, and the beams are arranged in-line and moved by the action of the magnetic field generated from both ring coils. Alternatively, the beams located on both sides can be arranged at right angles to each other, and the adjustment of horizontal or vertical dynamic compliance is extremely simplified.

[Brief explanation of the drawing]

FIG. 1 is a side view of a color cathode ray tube convergence device according to an embodiment of the present invention, FIG. 2 is a front view of FIG. 1, and FIG. 3 is a ring-shaped filter similarly used in a color cathode ray tube convergence device. This figure (A) is a front view of a ring-shaped bobbin attached to one side of the ring-shaped core, and the figure (B) is a front view of a ring-shaped bobbin attached to one side of the ring-shaped core. ) is a rear view of the ring-shaped bobbin shown in FIG. Figure 5 shows the winding process of the 6-pole coil for the ring-shaped coil 'I' f,
,-e. ,...”・-644), (B), (.2..6
An explanatory diagram of the magnetic field generated by the oil. Figure 7 is an explanatory diagram showing how the 4-pole coil is wound around the ring-shaped core. Figure 8 (A), (B), and (C) are the magnetic fields generated by the 4-pole coil. FIG. 12...Ring-shaped coil, 12.・6-pole film, 1
24...4-pole coil, 13...ring-shaped core, 14
...1 J-shaped bobbin, 15...segment Patent applicant Denki Acoustic Co., Ltd. 45 Figure 3 Figure 4 Figure 5 Figure 7 Figure 6 Figure 8

Claims (1)

[Claims] A ring-shaped bobbin having 12 segments that equally divides the core into 12 sections in the circumferential direction is provided on the ring-shaped core, and two sets of 6-pole ring-shaped coils are connected between the segments via the ring-shaped bobbin. Each section is alternately arranged and wound, and two sets of 4-pole ring-shaped fills are alternately arranged and wound, with one set having 17 sections and the other set having 2 sections. Poles and 4 poles glue
Beams located on both sides of the beams arranged in an in-line manner, in which the magnetic field generation center positions of each arrangement of ring-shaped coils are spaced at equal angular intervals, and are moved by the action of the magnetic fields generated from both ring-shaped coils. An in-line color cathode ray tube convergence device characterized in that the moving directions of the two ring-shaped fills are the same or perpendicular to each other.