JPS5926512Y2 - deflection yoke - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a side pinless self-convergence type deflection yoke mounted on a cathode ray tube, and more particularly to a deflection yoke in which a square-shaped vertical deflection coil is deflected.

Recently, a side virence self-convergence type deflection yoke has been developed that reduces astigmatism and improves side distortion. It is toroidally wound in a letter-shaped shape, and has a mechanism that prevents the winding position of the vertical deflection coil from shifting, that the winding of the vertical deflection coil is efficiently controlled, and that the vertical deflection coil and the horizontal deflection coil are It is desirable that the combination be effective.

The present invention relates to a side pinless self-convergence type deflection yoke developed in view of the above-mentioned matters.

An embodiment of the present invention will be described in detail below with reference to the drawings.

In Figures 1 and 2, 1 is a deflection yoke, which includes a core 2, a vertical deflection coil 3 wound toroidally in a ■-shape around the outer periphery of the core 2, and a vertical deflection coil 3 that is connected to the inner surface of the core 2 via a bobbin 4. It consists of a horizontal deflection coil 5 wound in a mold, and is mounted and fixed onto a cathode barrier tube 6 via a tightening piece 7 and a tightening band 7' provided on the tail side of the bobbin 4.

The core 2 constituting the deflection yoke 1 has a ring-shaped winding guide 8 at the head opening end 2A and the tail opening end 2B, respectively.
9 is attached and fixed by engagement, adhesion, etc.

Winding guide 8 fixed to each open end 2A, 2B of core 2
, 9 have substrates 8A, 9A as shown in FIGS. 3 and 4.
A plurality of winding locking protrusions 10 are provided on one surface of the coil at predetermined intervals in the circumferential direction, and the vertical deflection coil 3 engages with the winding locking protrusions 10 and is toroidally wound in a ■-shape. Ru.

Here, the winding locking protrusion 1 provided on the winding guides 8 and 9
0, one side is perpendicular to the substrates 8A and 9A to ensure locking in the pulling direction when the vertical deflection coil 3 is wound, and the other side is when the vertical deflection coil 3 is wound. tilted with respect to the substrates 8A and 9A to facilitate the sliding of the
It is formed with a serrated cross section.

In addition, an engagement groove 11 for position regulation is provided approximately at the center of the winding locking protrusion 10 surface side of the board 8A, 9A of the winding guide 8, 9. Among these, a terminal mounting portion 12 is formed at the end of the winding guide 8 fixed to the head opening end 2A of the core 2.
A pin-shaped terminal 13 is implanted and fixed therein.

Next, the bobbin 4 constituting the deflection yoke 1 has enlarged portions 4A at the head and tail, as shown in FIG.

4B, and a lead wire fitting groove 14 for fitting the lead wires R led out from the vertical and horizontal deflection coils 3 and 5 is formed in the circumferential direction on the outer periphery of the head enlarged portion 4A.

Further, on the rear side of the enlarged head portion 4A of the bobbin 4, as shown in FIG. A pair of first engaging pieces 15 extend in the radial direction substantially parallel to each other, and a winding guide 9 is provided in the vicinity of the enlarged tail portion 4B of the bobbin 4, as shown in FIG. 6B.
A pair of second locking pieces 16 are protruded to fit into and lock into the locking grooves 11 in positionally corresponding positions to the locking grooves 11, and the core 2 around which the vertical deflection coil 3 is wound is , is secured and fixed to the bobbin 4 via winding guides 8 and 9 which are fixedly attached to the core 2.

At this time, the engaging grooves 11 of the winding guides 8 and 9 are arranged so that the winding centers of the vertical deflection coil 3 wound around the core 2 and the horizontal deflection coil 5 wound through the bobbin 4 always coincide. The first and second engaging pieces 15 and 16 of the bobbin 4 are defined in position in advance.

In the deflection yoke having such a configuration, the core 2 having the vertical deflection coil 3 wound in a square shape is connected to the winding guides 8 and 9 through the winding locking projections 10 provided on the winding guides 8 and 9.
The engaging groove 11 provided on the bobbin 4 and the first and second engaging pieces 15 and 16 provided on the bobbin 4 are engaged with each other to regulate the position and are fixed at an optimal position on the bobbin 4.

After that, the lead wires R led out from the head sides of the vertical deflection coil 3 and the horizontal deflection coil 5 are connected to the head enlarged portion 4A of the bobbin 4.
into the lead wire insertion groove 14 provided in the winding guide 8.
The terminal 13 is connected to the terminal 13 fixed to the terminal mounting portion 12 of the cathode ray tube 6 and fixed thereon.

In one embodiment of the deflection yoke of the present invention, a terminal attachment part is formed at the end of the winding guide fixed to the open end of the head of the core, and a pin-shaped terminal is implanted and fixed in the terminal attachment part. , and a large lead wire fitting groove is formed in the outer circumferential direction of the enlarged head portion of the bobbin for fitting the lead wire led out from the deflection coil, but it is also possible to form the terminal mounting portion directly on the winding guide. Instead, as is well known in the art, the winding guide may be formed separately from the winding guide and attached and fixed on the outside of the expanded tail portion of the bobbin. The lead wire fitting large groove is also unnecessary if there is no terminal (terminal attachment part) on the head side of the bobbin, but if there is a terminal on the tail side of the bobbin, it may be provided on the outer layer of the expanded tail part as necessary. It is something.

As described above, the deflection yoke of the present invention is provided with a winding guide having a plurality of winding locking protrusions each having a serrated cross section at the head opening end and the tail opening end, and vertically extending through the winding guide. The core, on which the deflection coil is wound in a ■-shape, is fitted and fixed on the outer periphery of the bobbin, and at that time, the winding guide and the bobbin are connected through the engagement groove provided on the winding guide and the retaining piece provided on the bobbin. They engage and fix each other, and the fixing position of the core relative to the bobbin is regulated, making it possible to always align the winding centers of the vertical and horizontal deflection coils, eliminating the need for alignment, crosstalk, etc. adjustments, and simplifying the work process. In addition to being simple, it is possible to obtain good deflection characteristics (reducing astigmatism, improving side distortion, etc.).

In addition, the winding locking protrusions provided on the winding guide have a serrated cross-section, which ensures secure locking in the pulling direction when winding the vertical deflection coil, and prevents the winding from moving between the protrusions. The sliding of the coil is facilitated, and the winding of the coil (fitting between the protrusions and locking to the protrusions) is smooth, and the winding does not break during winding, so the desired coil winding is always achieved. It has great practical effects as a side pinless self-convergence type deflection yoke, such as being able to obtain a rotational distribution.

[Brief explanation of the drawing]

Fig. 1 is a side view of a deflection yoke according to an embodiment of the present invention, Fig. 2 is a rear view thereof, Figs. Figure A is a side view;
3B and 4B are front views, FIG. 5 is a side view of the bobbin, and FIG. 6 is a perspective view showing a state in which the winding guide and the bobbin are engaged. 1... Deflection yoke, 2... Core, 2A
, 2B... Core head/tail opening end, 3...
...Vertical deflection coil, 4...Bobbin, 8,9.
... Winding guide, 10 ... Winding locking protrusion, 11 ... Engagement groove, 15.16 ... Engagement piece.

Claims (1)

[Scope of utility model registration request] A winding guide having a plurality of winding locking protrusions with a serrated cross section is provided at the head opening end and the tail opening end, and a vertical deflection coil is wound in a ■-shape through the winding guide. A deflection yoke that is fitted and fixed to the outer periphery of a bobbin, and that the winding guide and the bobbin are engaged and fixed via an engagement groove provided in the winding guide and a retaining piece provided in the bobbin. .