JPH0419904Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Field of Application> The present invention relates to a convergence device for color cathode ray tubes used in color television receivers or color monitor devices in which a plurality of electron guns are arranged in-line. . <Prior art> Recently, as an in-line color cathode ray tube convergence device, four
A ring-shaped coil for dynamic convergence, in which a pole and a six-pole coil are wound in a toroidal manner, has been developed and put into practical use.

In a convergence device for a color cathode ray tube using a conventional ring-shaped coil, as shown in FIGS. 5 to 7, both sides 3 of a ring-shaped core 30 are
The coil 33 is toroidally wound around the outer periphery of the core 30 via the first and second ring-shaped coil bobbins 31 and 32 that are attached and fixed to the coils 0a and 30b, thereby forming the ring-shaped coil 34. The constructed ring-shaped coil 34 was housed and fixed inside a morning glory-shaped holder (not shown). Both sides 30a of the ring-shaped core 30,
Side surface 30 of core 30 among first and second ring-shaped coil bobbins 31 and 32 fixed to 30b
The first ring-shaped coil bobbin 3 fixed to a
1, 12 jetty-like segments 35 are formed at approximately equal angular intervals in the radial direction as position regulating means for regulating the winding position of the coil 33 on the surface of the bobbin body 31a, and Twelve protruding columns 36 are formed in the axial direction along the inner diameter surface of the core 30, continuing from the segments 35.
Further, a right-angled wall 37 is formed from the outer diameter portion of the bobbin body 31a to cover the outer circumferential surface 30c of the ring-shaped core 30, and the outer surface of the right-angled wall 37 corresponds in position to the segment 35 in the axial direction from the tip. Thus, twelve fitting recesses 38 were formed. On the other hand, the second ring-shaped coil bobbin 32 fixed to the side surface 30b of the ring-shaped core 30 has a bobbin main body 3.
As a position regulating means for regulating the winding position of the coil 33 on the surface of the coil 2a, there are 12 jetties 39 that correspond in position to the segments 35 when fixed to the core 30.
are formed in the radial direction, and twelve protrusions 40 are formed in the axial direction along the inner diameter surface of the core 30 continuously from the inner diameter part of the bobbin body 32a to the jetty 39. Further, on the outer periphery of the bobbin body 32a, a right-angled wall 37 is formed on the first bobbin 31 and is continuous with the jetty 39.
A substantially L-shaped projection piece 41 that partially fits into the fitting recess 38 provided in the projection piece 41 is formed to extend in the axial direction and radial direction, and forms the front side surface of the projection piece 41, that is, the jetty 39. A support 42 was provided to protrude along the axial direction on the same surface as the surface.

<Problems to be solved by the invention> However, in such a conventional configuration, the first and second ring-shaped coil bobbins 31,
The coil 3 is attached to the outer periphery of the ring-shaped core 30 via the coil 32.
3 in a toroidal manner, the coil 33 is only regulated in its winding position by the segments 35 and protruding columns 36 of the bobbin 31, and the jetties 39 and protrusions 40 of the bobbin 32; 39, there is no means for positionally regulating the coil 33, and as a result, the coil 33 does not have to be wound in the second layer during its winding, especially after winding the first layer on the bobbins 31, 32. At the time of overlapping winding, mainly the first layer coil moves between the segments 35 (jet 39) and becomes biased to one side.
There was a problem in that it was difficult to always obtain stable and good convergence characteristics because aligned winding was not possible.

<Means for solving the problems> In order to solve the above problems, the color cathode ray tube convergence device of the present invention has a plurality of coil insertion grooves on the surface of the ring-shaped coil bobbin fixed to the ring-shaped core. A part or all of the coil is inserted and locked into a coil insertion groove and wound.

<Example> Hereinafter, an example 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. Here, the same parts as in the prior art are given the same numbers and the explanation thereof will be omitted.

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 building integrity and static convergence, which are magnetized into pairs of two poles, four poles, and six poles, respectively, are rotatably attached to the holder 1, and the ring magnets are rotatably attached to the holder 1. 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 that is housed and fixed inside the holder 1 is similar to the conventional one.
The coil 2a is attached to the outer periphery of the core 30 via first and second ring-shaped coil bobbins 31 and 32 that are fixedly attached to both side surfaces 30a and 30b of the ring-shaped core 30.
It is made by winding it into a toroidal shape. (5th
(See Figures 7 to 7). Here, in the convergence device of the present invention, as shown in FIG. 3, the bobbin body 3 of the first ring-shaped coil bobbin 31
1a to the surface of the right-angled wall 37, a plurality of coil fitting grooves are formed radially between the segments 35 for the bobbin body 31a, and along the axial direction for the right-angled wall 37. 7, and a coil fitting groove 7 formed in the first ring-shaped coil bobbin 31 in the radial direction between the protrusions 39 on the surface of the bobbin body 32a of the second ring-shaped coil bobbin 32. A plurality of coil fitting grooves 8 are formed in positional correspondence with the coil fitting grooves 8. still,
In FIG. 2, reference numeral 9 denotes a ring-shaped printed circuit board fixed within the holder 1 in close proximity to the ring-shaped coil 21.

In the color cathode ray tube convergence device having such a configuration, both sides 30 of the ring-shaped core 30
First and second ring-shaped coil bobbins 31 and 32 are attached and fixed to a and 30b, and the coil 2a is toroidally wound around the outer periphery of the ring-shaped core 30 via the bobbins 31 and 32. At this time, as shown in FIG. 4, the first layer 2a1 of the coil 2a is fitted into the coil fitting grooves 7 and 8 provided on the surfaces of the first and second ring-shaped coil bobbins 31 and 32 and wound. The second layer 2a2 of the coil 2a is inserted between each wire of the first layer 2a1 and wound.As a result,
A ring-shaped coil 2 in which the coils 2a are wound in an aligned manner can be obtained. After that, the ring-shaped coil 2 including the coil 2a wound in an aligned manner is housed and fixed inside the holder 1, and predetermined wiring is performed via the printed circuit board 9, thereby constructing a convergence device. be.

In one embodiment of the color cathode ray tube convergence device of the present invention, a coil insertion groove is formed on the entire surface of the first and second ring-shaped coil bobbins attached to the ring-shaped core. The coil fitting groove may be formed only on the edge portion of the surface of the first and second ring-shaped coil bobbins. In this case, a double-sided adhesive tape or the like is applied to the surface of the bobbin where the coil fitting groove is not provided. By providing an adhesive means, it is also possible to combine the coil insertion groove and the adhesive means. Further, in an embodiment of the present invention, 12 position regulating means are provided on the surfaces of the first and second ring-shaped coil bobbins that are fixedly attached to the ring-shaped core,
Although the ring-shaped core is divided equally into 12 sections in the circumferential direction, as long as the coil can be wound to generate a 4-pole or 6-pole magnetic field, the number of position regulating means can be changed according to the embodiment. It is not limited, and can be increased or decreased as needed. Furthermore, the number of winding layers of the coil wound around the ring-shaped core is not limited to two layers as in the embodiment.
It can be set arbitrarily.

<Effects of the Invention> The convergence device for color cathode ray tubes of the present invention is as described above in detail, and produces the following effects. In other words, the coil is fitted into a coil insertion groove provided on the surface of the ring-shaped coil bobbin and is wound toroidally around the ring-shaped core, so that the coil winding position may shift during winding. Therefore, there is no risk of shifting to one side between the position regulating means (segments, jetties), and aligned winding is performed regardless of the number of layers of the coil. As a result,
Stable and good dynamic convergence characteristics can always be obtained, uniformity of dynamic convergence characteristics can be achieved, and mass productivity is excellent.

[Brief explanation of the drawing]

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 a partial sectional view of a ring-shaped core equipped with first and second ring-shaped coil bobbins showing the winding state of the ring-shaped coil. 1st, 2nd
FIG. 6 is an exploded perspective view of the core and the first and second bobbins before the ring-shaped coil bobbin is attached, and FIG. 6 is a device for winding the ring-shaped coil, and FIG. A front view of the first ring-shaped coil bobbin, Figure B is a rear view of the first ring-shaped coil bobbin attached to one side of the ring core, and Figure C is a rear view of the second ring-shaped coil bobbin. A front view of a bobbin for a ring-shaped coil, and FIG. 7 is a front view of a ring-shaped coil. 1...Holder, 2...Ring-shaped coil, 2a
... Coil, 30 ... Ring-shaped core, 31, 32
...first and second ring-shaped coil bobbins, 7,
8...Coil insertion groove.

Claims (1)

[Scope of utility model registration request] A converge for color cathode ray tubes, in which a ring-shaped coil is housed and fixed inside a morning glory-shaped holder, in which a prescribed coil is toroidally wound around the outer end of the core via a ring-shaped coil bobbin fixed to a ring-shaped core. A collar in which a plurality of coil fitting grooves are formed on the surface of the ring-shaped coil bobbin, and a part or all of the coil is fitted and locked in the coil fitting grooves and wound. Convergence device for cathode ray tubes.