JPH0323744Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention is a convergence device for color cathode ray tubes used in color television receivers or color monitor devices, etc., in which a plurality of electron guns are arranged in-line. Regarding.

<Prior art> Recently, as an in-line color cathode ray tube convergence device, four
A ring-shaped coil for dynamic convergence, in which pole and six-pole coils are wound in a toroidal shape, has been developed and put into practical use.

In a conventional color cathode ray tube convergence device using a ring-shaped coil, as shown in FIGS. 9 and 10, a ring-shaped coil 30 for dynamic convergence is inserted into a hole 32 provided in the center of a printed circuit board 31. Insert the printed circuit board 31
Coil bobbin 3 of ring-shaped coil 30
3 using an adhesive (not shown), and then attach the printed circuit board 31 with the ring-shaped coil 30 to the mounting plate 35 formed at the front of the morning glory-shaped holder 34 with screws 36. , the ring-shaped coil 30 was housed inside the holder 34 and fixed by using a nut 37.

<Problems to be solved by the invention> However, in such a conventional configuration,
The ring-shaped coil and printed circuit board are fixed using adhesive, and the printed circuit board and holder are fixed using screws and nuts, which increases the number of parts and costs, and also requires many man-hours and reduces production efficiency. There were some problems, such as "bad".

<Means for solving the problem> In order to solve the above problem, the color cathode ray tube convergence device of the present invention has position regulating means on both sides of the ring-shaped core to regulate the winding position of the coil. The provided first and second ring-shaped coil bobbins are attached, a right-angled wall is formed on the first ring-shaped coil bobbin, and a right-angled wall is formed on the outer periphery of the second ring-shaped coil bobbin so as to be continuous with the position regulating means. A protrusion piece is provided to fit on the outer periphery of the right-angled wall provided on the first ring-shaped coil bobbin, and some or all of the protrusion pieces are fitted into a position regulating recess provided inside the bobbin-shaped holder. It is made by mating and locking.

<Embodiment> Hereinafter, one embodiment of the convergence device for a color cathode ray tube according to the present invention will be described in detail with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a morning glory-shaped holder made of an insulating material. A ring-shaped coil 2 for dynamic convergence is housed and fixed inside the holder 1, and on the rear outer periphery of the holder 1, Ring magnets 3, 4, and 5 for polarity and static convergence, which are magnetized into pairs of 2, 4, and 6 poles, respectively, are rotatably attached to the holder 1, and the ring magnets are A locking member 6 is installed to hold and fix the parts 3, 4, and 5 in an optimal state. The ring-shaped coil 2, which is housed and fixed inside the holder 1, is attached to both sides 7a of the ring-shaped core 7, as shown in FIGS. 3 and 4.
The coil 2a is wound toroidally around the outer periphery of the core 7 via first and second ring-shaped coil bobbins 8 and 9 fixedly attached to the core 7b.
Among the first and second ring-shaped coil bobbins 8 and 9 attached to both side surfaces 7a and 7b of the ring-shaped core 7, the first ring-shaped coil bobbin is attached to the side surface 7a side of the core 7. Twelve jetty-like segments 10 arranged at approximately equal intervals are formed in the radial direction on the surface of the bobbin body 8a as position regulating means for regulating the winding position of the coil 2a. Twelve protruding columns 11 are formed from the inner diameter portion of the core 7 in the axial direction along the inner diameter surface of the core 7, continuing from the segment 10. Further, a right-angled wall 12 is formed from the outer diameter portion of the bobbin body 8a to cover the outer circumferential surface 7c of the ring-shaped core 7, and a protrusion on the outer surface of the right-angled wall 12 is continuous with the segment 10 and extends on an extension line of the segment 10. A wiring auxiliary means 13 having a shape is provided, and in the axial direction from the tip on the outer surface of the right angle wall 12,
Twelve fitting recesses 14 are formed in positional correspondence to the segments 10. On the other hand, the second ring-shaped coil bobbin 9 attached to the side surface 7b of the ring-shaped core 7 has a segment 10 formed on the surface of the bobbin body 9a as a position regulating means like the segment 10 formed on the first bobbin 8. When attached to the core 7, 12 jetties 15 are formed in the radial direction in positional correspondence with the segments 10, and are continuous from the inner diameter part of the bobbin body 9a to the jetties 15 along the inner diameter surface of the core 7. Twelve protrusions 16 are formed in the axial direction. Further, from the outer diameter part of the bobbin body 9a, a first
A protruding piece 17 that partially fits into a fitting recess 14 provided in a right-angled wall 12 formed on the bobbin 8 is provided with a printed circuit board fixing protrusion 18 and is formed to protrude in the axial and radial directions.

Next, in the bosh-shaped holder 1 in which the ring-shaped coil 2 is stored and fixed, as shown in FIG. Twelve position regulating recesses 19 are provided at approximately equal angular intervals in correspondence with the protrusions 17 provided on the second ring-shaped coil bobbin 9. The position regulating recess 19 is as shown in FIG.
The front enlarged part 1a and the morning glory part 1b are formed on the inner surface of the holder 1 near the boundary part 1c between the front enlarged part 1a and the morning glory part 1b.
It is formed by cutting out a part of the protrusion 20 provided over the area. In addition, several locking protrusions 21 are formed on the front edge of the front enlarged part 1a of the holder 1 so as to have spring properties in the inner radial direction and protrude inwardly.
A lead wire lead-out portion 25 is formed in a part of the coil 2a, and includes two fixing pieces 23 and 24 each having an acute-angled tip for leading out the lead wire 22 from the coil 2a shown in FIG. . In FIG. 2, reference numeral 26 indicates a printed circuit board, and reference numeral 27 indicates a clamper for fixing the lead wire 22 attached to the lead wire lead-out portion 25.

In the color cathode ray tube convergence device having such a configuration, one side surface 7 of the ring-shaped core 7
Attach the first ring-shaped coil bobbin 8 to a,
Next, the second ring-shaped coil bobbin 9 is attached to the other side surface 7b of the core 7. At this time, as shown in FIG. 7, the lower surface 17a of the projection piece 17 provided on the second bobbin 9 is fitted into the fitting recess 14 formed on the outer surface of the right-angled wall 12 of the first bobbin 8. The first bobbin 8 and the second bobbin 9 are fitted and fixed. When the first and second bobbins 8 and 9 are fixed to the ring-shaped core 7, two sets of six-pole and four-pole coils are wound on the bobbins 8 and 9 in a toroidal manner, and dynamic convergence is performed. A ring-shaped coil 2 for the engine is formed. Here, the jumper wires (not shown) of the coils 2 and 2a run along the outer surface of the right-angled wall 12 provided on the first bobbin 8.
The coils 2, 2a are wired between the wiring auxiliary means 13 formed in the above and the protruding piece 17 provided on the second bobbin 9, and the coils 2, 2a are connected to the segment 10, the protruding column 11, the protruding part 16, the jetty 15, the protruding piece 17, Wiring auxiliary means 13
The winding position is regulated by the 6-pole coil, and aligned winding is performed. Specifically, the 6-pole coil is first passed through the jumper wire on the outer surface of the right-angled wall 12, and is shifted by about 30 degrees from each other. Wind two sets, and then wind two sets of 4-pole coils with the same angle of about 45° relative to each other.
A ring-shaped coil 2 is formed by winding the coil. When the ring-shaped coil 2 for dynamic convergence is formed, the printed circuit board 26 is fitted into the printed circuit board fixing protrusion 18 provided on the protrusion piece 17 formed on the second bobbin 9, and the second bobbin is attached. 9, fix the printed circuit board 26 to
Perform the predetermined wiring via. Thereafter, as shown in FIG. 8, the side surface of the tip of the protruding piece 17 formed on the second bobbin 9 is fitted and locked into the position regulating recess 19 provided inside the holder 1, and at the same time, the printing The board 26 is connected to the surface of the projection piece 17 by the locking projection 21 provided on the enlarged front portion 1a of the holder 1.
1 and fix the lead wire 22 between the clampers 2 and 2.
7, the coating is inserted into the ends of the fixing pieces 23, 24 and is led out from the lead wire lead-out portion 25 to form a convergence device.

In one embodiment of the color cathode ray tube convergence device of the present invention, 12 position regulating means are provided on the surfaces of the first and second ring-shaped coil bobbins that are attached to the ring-shaped core. Although we have described a structure in which a shaped core is equally divided into 12 sections in the circumferential direction, as long as the coil can be wound to generate a magnetic field of 4 or 6 poles, the number of position regulating means can be reduced. It is not limited to the examples, and can be increased or decreased as necessary. In addition, in this embodiment, on the outer periphery of the second ring-shaped coil bobbin attached to one side of the ring-shaped core, all of the position regulating means are continuously connected.
There are 12 protruding pieces, and there are also 12 protruding pieces inside the holder.
As described above, 12 position regulating recesses are provided, and the second ring-shaped coil bobbin (ring-shaped coil) and the holder are fitted and fixed via the 12 protruding pieces and the position regulating recesses. The number of position regulating recesses is also not limited to the embodiment as long as the ring-shaped coil and the holder can be fitted and fixed securely and firmly, for example, two, four, etc. diagonally. The number may be reduced, and in this case, the configuration is simplified. Furthermore, it goes without saying that various modifications and changes can be made to other configurations other than the above-described embodiments as necessary.

<Effect of the invention> The convergence device for a color cathode ray tube of the invention is as described in detail above, and the ring-shaped coil and the holder are fixed to the second ring-shaped coil bobbin constituting the ring-shaped coil. This is done by fitting the protruding piece with a position regulating recess provided inside the holder, and it is a screw that was conventionally used to store and fix the ring-shaped core inside the holder.
This eliminates the need for nuts and adhesives, reduces the number of parts, reduces costs, and significantly simplifies the work process, greatly improving production efficiency. In addition, rotation of the ring-shaped coil with respect to the holder and movement in the vertical and horizontal directions are completely prevented by the engagement of the protruding piece with the position regulating recess, eliminating the need for centering work, and the ring-shaped coil is The ring-shaped coil bobbin is placed and fixed in the position regulating recess of the holder via the protruding piece of the bobbin, so there is no risk of tilting the ring-shaped coil, and as a result, it is extremely stable. Good convergence characteristics can be obtained. Furthermore, since the printed circuit board can be fixed without using adhesives, there is no need for adhesive application time or adhesive drying time, resulting in a significant reduction in work time. Ta2
By inserting the lead wire into the tip of the fixed piece of the book and leading it out from the lead wire lead-out part, it is extremely effective in fixing the lead wire and removing external loads, and it is possible to directly attach the lead wire to the printed circuit board. It is something that

[Brief explanation of drawings]

Fig. 1 is a side view of a convergence device for a color cathode ray tube according to an embodiment of the present invention, Fig. 2 is a front view of Fig. 1, and Fig. 3 is a ring-shaped coil used in the convergence device for a color cathode ray tube. Figure A is a front view of the first ring-shaped coil bobbin attached to one side of the ring-shaped core, and Figure B is a front view of the first ring-shaped coil bobbin attached to one side of the ring-shaped core. Figure C is a front view of the second ring-shaped coil bobbin attached to the other side of the ring-shaped core, and Figure 4 is a rear view of the ring-shaped coil bobbin attached. FIG. 5 is an exploded perspective view of the ring-shaped core and the first and second ring-shaped coil bobbins before the first and second ring-shaped coil bobbins are attached to both sides of the ring. FIG. 6 is a front view of the holder that stores the ring coil, FIG. 6 is a perspective view of the main part of the holder, and FIG. 8 is a sectional view taken along the line A--A in FIG. 2, FIG. 9 is a side view of a conventional color cathode ray tube convergence device, and FIG. 10 is a front view of FIG. 1...Holder, 2...Ring-shaped coil, 2a
...Coil, 7...Ring-shaped core, 7a, 7b...
... Ring-shaped core side surface, 8, 9 ... First and second ring-shaped coil bobbins, 10, 15 ... Position regulating means, 12 ... Right-angled wall, 17 ... Projection piece, 19 ...
...Recess for position regulation.

Claims (1)

[Scope of utility model registration request] In a convergence device for a color cathode ray tube, in which a ring-shaped coil obtained by winding a required coil in a toroidal shape around a ring-shaped core is housed and fixed inside a morning glory-shaped holder, the ring-shaped core has the above-mentioned coils on both sides thereof. First and second ring-shaped coil bobbins provided with position regulating means for regulating the winding position of the coil are attached, and the peripheral surface of the ring-shaped core is covered with the first ring-shaped coil bobbin. A right-angled wall is formed and is fitted to the outer periphery of a right-angled wall provided on the first ring-shaped coil bobbin in succession to a position regulating means provided on the second ring-shaped coil bobbin. A convergence device for a color cathode ray tube, characterized in that protruding pieces are provided, and some or all of the protruding pieces are fitted and locked in a position regulating recess provided inside the holder.