JPS58126645A - Deflection yoke - Google Patents

Abstract

PURPOSE:To prevent the winding disorder of a main winding by returning a return winding only over the outer circumference of each layer by a quick return method. CONSTITUTION:A main winding for a vertically deflecting coil is wound in toroidal form around a ferrite core (d) of a cylindrical truncated-cone-like ferrite core which is obtained by dividing it into equal halves in its axial direction. However, a return wire (f) is drawn over the outer wall of the ferrite core (d), and is not drawn over the inner wall of the ferrite core (d) for return. The return wire (f) is returned over the main winding of each layer in such a manner as above. By providing such a return wire (f), any disorder of the pitches of the main winding which forms a layer by being wound around the return wire (f) is not caused, and the distribution of the winding is stabilized. In addition, the main winding (e) is laminated over the inner wall of the ferrite core (d) in stacked-straw-bag-like form in such a manner that the lines of the second layer (a2) are located in the centers between the lines of the first layer (a1), and the lines of the third layer (a3) are located in the centers between the lines of the second layer (a2).

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a deflection yoke device used in television receivers, etc.

Technical Background of the Invention and Layer Points Generally, the polarization yoke device of a color television receiver is
Most commonly, the horizontal deflection coil is a hollow-shaped winding, and the vertical deflection coil is toroidally wound around a ferrite core divided into two. The horizontal deflection coil is arranged around the inner periphery of the coil separator, and the vertical deflection coil is arranged around the outer periphery of the coil separator. The winding distribution of the vertical deflection coil has a close relationship with the convergence characteristics in the picture tube plane and other characteristics such as deflection distortion, so variations in the winding distribution deteriorate the screen quality of the TV receiver. 1. The winding method of a normal vertical deflection coil is
As shown in FIG. 1, the first layer wla 1 and the second layer a2
The wires are wound one after another, and a return line portion is formed between each layer. This return edge is wound with two or three turns as shown in FIG. 2, but it is formed in a straight line mt which is inclined with respect to the straight part of the main winding forming the layer. Therefore, the main windings are wound one after another on the return wire forming this inclined straight section to form a pigeon.

However, when the main winding is wound on a sloped wire, the main winding often slips, and since there are multiple such parts, the pips of the main winding are disturbed, and the disturbance varies widely. A winding distribution with an ideal constant pip winding cannot be obtained, which is a major cause of distortion of the vertical deflection magnetic field, miscompensation, and deflection distortion. Note that d is a ferrite core.

OBJECTS OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to provide a deflection yoke device in which each layer can easily be wound at a constant pitch and the same characteristics as described above can be obtained.

SUMMARY OF THE INVENTION In this invention, the return wire passes only along the outer periphery of the main wire to eliminate variations in the winding layer wound thereon, and the second layer is wound on the inner peripheral side of the ferrite core. It is formed so as to be located at the center between adjacent lines of the subsequent mv front layer.

Embodiment of the Invention An embodiment of the invention will be described below with reference to the drawings. In FIG. 3, d is one ferrite core obtained by dividing a substantially trapezoidal conical cylindrical ferrite core into two in the axial direction. This ferrite core d has a vertical deflection coil main winding! is toroidally wound, but the return wire f is tied together at the outer periphery and is not drawn to the inner periphery of ea for return. The return wire f is thus returned onto the main winding of each layer. By forming such a return wire f, the pitch disturbance of the main windings wound on the return wire to form a layer is eliminated, and the winding distribution is stabilized.

Further, in this device, the following winding method is adopted as the winding method of the main winding l1IA. That is, as shown in Figure 4,
Inner circumference of ferrite core d [+: Main winding i with 11 layers!
5 is wound so that the 2nd a20 line is located in the center of the 110th line of the first layer, and further the - of the Q center 42 3rd @ a J is located between the lines of the 2nd layer -2, and then Based on this relationship, the s-gano distribution is shaped like a debt accumulation. This stacked portion is a portion where the forging and electric machines are densely packed and adjacent to each other, that is, the portion where the diameter of the ferrite core d is the smallest, and is set with the electron gun side as a reference.

When winding the deflection yoke in a stacked manner as described above, the required characteristics of the deflection yoke and component selection are performed in consideration of the following relational expressions. As shown in Fig. 4 and Is5, the radius of the minimum inner diameter part on the electron gun side of the ferrite core is rc (the diameter is φC), the outer diameter of the electric machine is φ1, the winding pitch is #,
Also, the total number of turns is N, and the winding angle of each layer is 'l e 'l l...
・0. .

Let NI ridge be n. In addition, as is clear from Fig. 4, when the wire is wound in the shape of a coal seed, the center of the '@ wire of each layer is Is
As shown in Figure 6, each is located on a circular arc drawn from the center of the ferrite core. As shown in FIGS. 6 and 7, this is assumed to be '1yre...rn-,, r(1. FIG. 6 shows the inside of the main winding layer, and FIG. 7 shows the outside of j-.

The relationship between each of the above elements can be shown as follows.

Winding angle of each layer θt wm e l-〇.

Q s −Q t −Q p −Q + −2Q pQ
n −Q l −(n−1) Q p ... Curved curve + 11 Relationship between the number of turns and the winding angle Radius of the winding wire in each layer φW j * Ceramic f , −□・・・・・・・・・・・・...
・(3)・・・・・・・・・・・・・・・・・・(4) Next, when winding wire in a stacked manner, you need to be careful about the law. That is, as shown in FIG. 6, conditions are required so that the lines of the first layer a1 and the lines of the third layer a3 do not come into contact with each other. For this purpose, it is sufficient to satisfy the following equation.

Also, in the final 11m (Fig. 7), the final layer at+
Adjacent '44! The limit is the pips (Qp) that lI touches. For this purpose, it is necessary to satisfy the following formula.

For toroidal-wound vertical deflection coils, the winding specifications are edge winding N, @angle a1, IIIE wire outer diameter -W,
The ferrite core inner diameter φC (radius rc) etc. are given according to the required characteristics. Therefore, the winding pitch for winding the wire in a stacked shape is determined by (Qn-Qt-(tI-1)Qp''=.(1)) using the above formula.

・・・・・・・・・・・・(4) 12 Therefore, the # of the outside gong of the flower of inspiration! Fl! : Also # can be thick.

Effects of the Invention According to the present device described above, the return winding is a quick return that returns only the outer periphery of each layer, so winding variations in the main winding do not occur, and winding with a stable constant pitch can be achieved. , the magnetic field distribution is also stable. In addition, on the inner circumferential side of the ferrite core, the second and subsequent layers are wound so as to be located in the center between the adjacent lines of the previous layer and stacked in bales, so the above-mentioned formulas are applied to the design. This can contribute to obtaining easy and stable characteristics. Therefore, overall, it is an effective device for improving the quality of the equipment.

[Brief explanation of the drawing]

Figures 1 and 2 are explanatory diagrams showing the winding state of a conventional vertical deflection coil, and Figure 3 is an embodiment of the present invention. The explanatory drawings showing the embodiment, $5m, $6 and Fig. 7 are single-layer views of the patterned needles in one embodiment of the present invention. -... Ferrite core, 2... Main 4! l4IIli
% f - return line. Applicant's representative Patent attorney Takehiko Suzue Figure 1 Figure 3 Room 4 Figure 5 Room 5m Figure 6 Figure 7

Claims (1)

[Claims] In a deflection yoke device in which a toroidal-wound vertical deflection coil is provided around the outer periphery of a coil separator and a crescent-shaped horizontal deflection coil is provided around the inner periphery, the vertical deflection coil is wound around a ferrite core divided into two in the axial direction. In this case, the return wire for the main winding is routed only along the outer periphery of the larger diameter side of each layer, and the layer formed on the inner side of the ferrite core has a structure in which the return wire for the main winding is routed only along the outer periphery of the large diameter side of each layer, and the layer formed on the inner side of the ferrite core has a structure in which the return wire for the main winding is routed only along the outer periphery of the large diameter side of each layer, and the layer formed on the inner side of the ferrite core is A deflection yoke device characterized in that it has a structure in which layers are successively formed at the center between adjacent lines.