JPS5812363Y2 - deflection yoke - Google Patents

Description

[Detailed Description of the Invention] The present invention particularly relates to a deflection coil winding distribution of a deflection yoke in which a horizontal deflection coil is wound in a saddle shape and a vertical deflection coil is wound in a toroidal V-shape.

Conventional - In a deflection yoke in which the horizontal deflection coil is wound in a saddle shape and the vertical deflection coil is wound in a toroidal shape, the head window of the horizontal coil is made wide so as not to create a magnetic field at the pole.
The vertical flux was improved by improving the magnetic field distribution.

Furthermore, in recent years, deflection yokes have been developed in which left-right distortion is not corrected by a circuit or the like, but is improved by the magnetic field distribution of the deflection yoke.

This is a convergence-less, side-pinless type deflection yoke.In this deflection yoke, the horizontal deflection coil has a hollow shape, the head window is wider than the tail window, and the vertical deflection is improved. The coil was wound toroidally in a V-shape with a head window wide and a tail window 4 narrow, and the head magnetic field was made into a pin magnetic field, and the tail magnetic field was made into a barrel magnetic field to improve left and right distortion.

However, although this convergence-less, side-pinless type deflection yoke improves vertical flux and lateral distortion, as shown in FIG. 22, the inner diameter of the vertical deflection coil became larger at the head 21, and no improvement in the efficiency of the deflection yoke was observed.

The present invention relates to a deflection yoke intended to eliminate these conventional drawbacks, and particularly relates to a deflection yoke in which a vertical deflection coil is wound toroidally in a V-shape.

Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 shows a deflection yoke according to an embodiment, in which the deflection yoke body 1 has a core 2 and a head window 7 widened and a tail window 8 narrowed to form a direct V-shape. A bobbin 4 is formed by joining a vertical deflection coil 3 wound in a toroidal shape, a pair of semi-annular bobbins attached to the inner surface of the core 2, and a head window is formed on the inner surface of the bobbin 4 via the bobbin 4. It is composed of a horizontal deflection coil 5 having a width wider than the tail window portion 10 and a horizontal deflection coil 9 wound in a saddle shape, and is mounted and fixed on a cathode ray tube 6.

In the deflection yoke main body 1, the vertical deflection coil 3 is wound toroidally in a V-shape around the core 2, and as shown in FIGS. 2 to 4, one head winding portion 12 is a horizontal deflection coil. It is located in the head window 10 of No. 5 with the bobbin 4 apart,
The winding width A of the head winding portion 120 of the vertical deflection coil 3 is smaller than the width B of the head window portion 10 of the horizontal deflection coil 5 .

In the tail section 2A, the horizontal deflection coil 5 and the vertical deflection coil 3 intersect, and in the head section 2B...
In this case, the vertical deflection coil 30 winding position is the horizontal deflection coil 5.
Since the vertical deflection coil 30 corresponds to a window portion where no wire is wound, the horizontal deflection coil 50 can be placed inside the head window portion 10 by reducing the inner diameter 2 of the head winding portion 12 of the vertical deflection coil 30.

Therefore, in the vertical cross-sectional view of the horizontal deflection coil 5 and the core 2 shown in FIG. The core 2 around which the core 3 is wound also has a smaller head opening diameter on the head 13 side.

In addition, as the opening diameter of the head of the core 20 and the inner diameter of the head winding portion of the third winding of the vertical deflection coil are reduced, the head of the third winding of the vertical deflection coil is also reduced at the head of the bobbin 4. Winding part 1
It is necessary to create a structure in which a protrusion is provided near 2 on the tube axis side.

As described above, according to the deflection yoke of the present invention.

The head window is wider than the tail window and the horizontal deflection coil is wound in a saddle shape, and the head window is wider than the tail window and the tail window is narrower.
In the vertical deflection coil which is wound in a toroidal shape and the deflection yoke, the winding width of the head winding part of the vertical deflection coil is narrower than the width of the head window part of the horizontal deflection coil. The head winding part of the coil is inserted into the head window of the horizontal deflection coil, and since the vertical deflection coil approaches the surface of the cathode ray tube at the head, it is difficult to obtain a predetermined deflection magnetic field. Less power is required than in the past, and the efficiency of the deflection yoke is improved.

In addition, since the opening diameter of the core head becomes smaller, the core taper from the head to the tail becomes smaller, resulting in a shape close to a straight core.
In the case of a deflection yoke in which the wire is wound diagonally on the core, the vertical deflection coil winding is less likely to be twisted, and the variation in the deflection characteristics of the deflection yoke is reduced, thereby improving quality. .

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a deflection yoke showing an embodiment of the present invention;
Figure 2 is a front view of the vertical deflection coil wound around the core, Figure 3 is a cross-sectional view of the deflection coil winding distribution at the head, and Figure 4 is the deflection coil winding at the tail. 5 is a longitudinal sectional view of the horizontal deflection coil and core, and FIG. 6 is a longitudinal sectional view of the horizontal deflection coil and core in a conventional deflection yoke. 1... Deflection yoke body, 2... Core,
3...Vertical deflection coil, 5...Horizontal deflection coil, 7...Vertical deflection coil head window, 8
...Vertical deflection coil tail window section, 10...
・Horizontal deflection coil tail window part, 12... Vertical deflection coil head winding part, A... Vertical deflection coil head winding part width.

Claims (1)

[Claims for Utility Model Registration] A horizontal deflection coil wound in a saddle shape with a head window wider than a tail window;
In a deflection yoke consisting of a vertical deflection coil wound in a toroidal shape. The winding width of the head winding portion of the vertical deflection coil is narrower than the width of the head window portion of the horizontal deflection coil, and the head winding portion of the vertical deflection coil is formed within the head window portion of the horizontal deflection coil. A deflection yoke characterized by being inserted into the yoke.