JPH0323745Y2 - - 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
Those that use a ring-shaped coil for dynamic convergence, which is a toroidally wound pole and six-pole coil, and those that use a printed circuit board that connects and wires the ring-shaped coil close to the ring-shaped coil. A number of methods have 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. Hole 32 provided in the center of 31
A part of the coil bobbin 33 of the ring-shaped coil 30 and the surface of the printed circuit board 31 are bonded with adhesive 34.
By gluing the ring-shaped coil 3 using
0 is fixed to a printed circuit board 31, and the printed circuit board 31 to which the ring-shaped coil 30 is fixed is attached to a mounting plate 36 formed at the front of a morning glory-shaped holder 35 using fixing means such as screws or nuts. By attaching and fixing the ring-shaped coil 30 through the holder 37, the ring-shaped coil 30 is housed and fixed inside the holder 35.

<Problems to be solved by the invention> However, in such a conventional configuration,
This method uses adhesive to fix the ring-shaped coil and the printed circuit board, which increases the number of parts and increases costs.It also requires a large amount of time to dry the adhesive, which significantly reduces workability and reduces production. In addition, when storing and fixing the ring-shaped coil inside the holder, it is necessary to attach the printed circuit board to which the ring-shaped coil is adhesively fixed to the holder using fixing means such as screws and nuts. There were problems such as an increase in the number of parts and an increase in the number of work processes, as it had to be fixed in place.

<Means for Solving the Problems> In order to solve the above-mentioned problems, the convergence device for color cathode ray tubes of the present invention has a convergence device that extends radially around the outer periphery of a ring-shaped coil bobbin attached to the side surface of a ring-shaped core. A plurality of protruding pieces are provided, struts are provided to protrude in the axial direction on the surfaces of some or all of the protruding pieces, and a ring-shaped printed circuit board is mounted on the surface of the protruding piece via the struts, and a plurality of protruding pieces are provided on the front edge of the holder. The ring-shaped printed circuit board is pressed and fixed to one side of the protrusion by providing a plurality of locking pawls scattered about, and engaging the locking pawls with the surface of the ring-shaped printed circuit board.

<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 toroidally wound 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. On the bobbin 8, twelve jetty-like segments 10 are formed at approximately equal intervals in the radial direction as position regulating means for regulating the winding position of the coil 2a on the surface of the bobbin body 8a. Twelve protruding columns 11 are formed in the axial direction along the inner diameter surface of the core 7 continuously 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 the outer surface of the right-angled wall 12 is provided with segments 1.
0, a protruding wiring auxiliary means 13 is provided on the extension line of the segment 10, and similarly, on the outer surface of the right-angled wall 12, 12 wiring auxiliary means 13 are provided in the axial direction from the tip in positional correspondence to the segment 10. A fitting recess 14 is formed. On the other hand, the second ring-shaped coil bobbin 9 attached to the side surface 7b side of the ring-shaped core 7 has a position regulating means on the surface of the bobbin body 9a so that when attached to the core 7, the segment 10 Twelve protrusions 15 are formed in the radial direction in corresponding positions, and twelve protrusions 16 are formed in the axial direction along the inner diameter surface of the core 7 continuously from the inner diameter part of the bobbin body 9a to the protrusions 15. be done. Further, on the outer periphery of the bobbin body 9a, continuous with the jetty 15, there is a substantially L-shaped protrusion piece 17 that partially fits into a fitting recess 14 provided in a right-angled wall 12 formed on the first bobbin 8. It is formed to extend in the axial direction and the radial direction, and a strut 18 is provided to protrude along the axial direction from the front side surface of the protruding piece 17, that is, from the same side surface as the surface on which the jetty 15 is formed.

Next, in the bosh-shaped holder 1 in which the ring-shaped coil 2 is stored and fixed, as shown in FIG. 12 position regulating recesses 19 into which portions of the protruding pieces 17 are fitted in positions corresponding to the protruding pieces 17 provided on the ring-shaped coil bobbin 9 of No. 2;
are provided at approximately equal angular intervals. Also, holder 1
Several locking claws 20 are formed on the front edge of the enlarged front part 1a of the holder 1 and have spring properties in the inner radial direction and protrude inward.
A part a has a lead wire lead-out portion 2 for leading out the lead wire 21 from the coil 2a shown in FIG.
2 is formed, and a position defining piece IK is formed in the axial direction at the top of the front enlarged portion 1a. Returning to FIG. 2, 23 is a ring-shaped printed circuit board, and as shown in FIG. Holes 24 are provided at intervals in the circumferential direction, through which the struts 18 protruding from the ring portion 2 are inserted.
A notch 25 for accommodating a part of the protruding piece 17 is provided on the inner circumferential surface of the support 3a, and a recess H is provided on the outer circumferential surface for fitting the position defining piece IK formed on the holder. The second ring-shaped coil bobbin 9 (ring-shaped coil 2) is attached to the second ring-shaped coil bobbin 9 (ring-shaped coil 2) through which the holder 1 is locked by the locking claws 20. In addition, 26 in FIG. 2 is a clamper for fixing the lead wire 21 attached to the lead wire lead-out portion 22.

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, a second ring-shaped coil bobbin 9 is attached to the other side surface 7b of the core 7.
The lower surface of the protruding piece 17 provided on the ring-shaped coil bobbin 8 is fitted into the fitting recess 14 provided on the right-angled wall 12 of the ring-shaped coil bobbin 8, and the first and second bobbin 8 are attached to the ring-shaped core 7. , 9 are fitted and fixed. Thereafter, two sets each of six-pole and four-pole coils are wound in a toroidal manner on the ring-shaped core 7 via the bobbins 8 and 9.
A ring-shaped coil 2 for dynamic convergence is formed. When the ring-shaped coil 2 is formed, the hole 24 provided in the ring-shaped printed circuit board 23 is fitted into the support 18 provided on the protruding piece 17 formed on the second bobbin 9, and the hole 24 provided in the ring-shaped printed circuit board 23 is also fitted. A part of the protrusion piece 17 is accommodated in the provided notch 25, and the printed circuit board 23 is inserted into the protrusion piece 1.
While placed on the surface of the coil 7, it is attached and fixed to the second ring-shaped coil bobbin 9 (ring-shaped coil 2), and predetermined wiring is performed. The ring-shaped coil 2 with predetermined wiring connected to the ring-shaped printed circuit board 23 is inserted into the inside of the holder 1 by fitting and locking the side surface of the tip end of the protruding piece 17 into a position regulating recess 19 provided inside the holder 1. Store and secure. At this time, the recess H provided on the printed circuit board 23 and the positioning piece IK provided on the holder 1 are fitted together to form a ring-shaped coil 2.
are stored in a predetermined position in the holder 1, that is, in a position where the four-pole and six-pole magnetic fields generated by the coils are normally applied to the beam. The ring-shaped printed circuit board 23 attached and fixed to the ring-shaped coil 2 is attached to the front enlarged portion 1 of the holder 1.
The locking pawl 20 provided at a is engaged with the surface of the ring portion 23a and pressed toward the protrusion piece 17, and as a result, the ring-shaped printed circuit board 23 is held between the surface of the protrusion piece 17 and the locking pawl 20. It is fixed in the state that
Finally, the ring-shaped coil 2 is fixed within the holder 1.

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. In the above description, the core is equally divided into 12 sections in the circumferential direction, but the number of position regulating means is limited to the embodiment as long as the coil can be wound so as to generate a 4-pole or 6-pole magnetic field. It is not something that is fixed, but can be increased or decreased as needed. 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,
Twelve protruding pieces are provided in succession on all of the position regulating means, and a strut is provided on the surface of each protruding piece to protrude in the axial direction.On the other hand, 12 holes are also provided in the ring-shaped printed circuit board, and 12 protruding pieces are provided on the surface of each protruding piece. Although we have described a method for attaching and fixing a printed circuit board to a ring-shaped coil by fitting the pillars and holes, the number of pillars and holes is not limited to the embodiment, and the purpose can be achieved by providing at least two diagonally. It is achievable. (Of course, if a large number are provided, the attachment and fixation can be ensured.)Furthermore, the number of locking claws provided on the front edge of the holder is 4 as in the embodiment.
The number of protrusions is not limited to one, and the number is arbitrary as long as the protrusion can be pressed and fixed to one side of the printed circuit board. Furthermore, it goes without saying that various modifications and changes can be made to other configurations other than the above-described embodiments as needed.

<Effects of the Invention> The convergence device for color cathode ray tubes of the present invention is as described in detail above, and the ring-shaped printed circuit board is fixed to the ring-shaped coil by protruding from the surface of the protruding piece provided on the bobbin for the ring-shaped coil. This is achieved by a support provided and a locking claw provided on the front edge of the holder, eliminating the need to use adhesive to fix the printed circuit board as in the past, eliminating the need for adhesive application time and adhesive drying time. Working time is significantly shortened, production efficiency is improved, and costs are also reduced because no adhesive is used.
In addition, the printed circuit board is fixed by being held between the surface of the protrusion and the locking claw via the support, completely preventing movement in the axial (back and forth) direction, and also preventing movement in the rotational direction. It is always reliable and does not deteriorate over time.
It is possible to obtain strong fixation. Furthermore, the winding (installation) position of the ring-shaped coil within the holder is always regulated at a predetermined position by fitting the recess provided on the printed circuit board with the position regulating piece provided on the holder, ensuring good convergence characteristics. It is effective in obtaining

[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 an exploded perspective view of the core and the first and second bobbins before the first and second ring-shaped coil bobbins are attached to both sides of the holder. 6 is a front view of a ring-shaped printed circuit board, FIG. 7 is a side view of a conventional color cathode ray tube convergence device, and FIG. 8 is a front view of FIG. 7. 1...Holder, 2...Ring-shaped coil, 7...
...Ring-shaped core, 8, 9... First and second ring-shaped coil bobbins, 17... Projection piece, 18... Support column, 20... Locking claw, 23... Ring-shaped printed circuit board.

Claims (1)

[Scope of utility model registration request] In a convergence device for a color cathode ray tube, in which a ring-shaped coil in which a required coil is toroidally wound around a ring-shaped core is housed and fixed inside a morning glory-shaped holder, a ring-shaped coil attached to a side surface of the ring-shaped core is used. A plurality of protruding pieces extending in the radial direction are provided on the outer periphery of the coil bobbin, and struts are provided to protrude in the axial direction on the surfaces of some or all of the protruding pieces, and a ring-shaped piece is formed on the surface of the protruding piece through the struts. When the printed circuit board is mounted, a plurality of locking claws are provided on the front edge of the holder, and the locking claws are engaged with the surface of the ring-shaped printed circuit board to attach the ring-shaped printed circuit board to the ring-shaped printed circuit board. A color cathode ray tube convergence device characterized by a protrusion that is pressed and fixed on one side.