JPH0745872Y2 - Deflection yoke - Google Patents

Description

The present invention relates to a deflection yoke used in a cathode ray tube of a television receiver or the like.

2. Description of the Related Art A conventional deflection yoke will be described below.

As shown in FIG. 6, the electric wire is wound around a dedicated winding die that differs depending on the shape of the target convergence, and the split coil 7 is formed by heat or chemical treatment. As shown in FIG. 7, four split coils 7 are arranged bilaterally and vertically symmetrically on the yoke cover 6 of the deflection yoke, and adjacent split coils 7 are connected.

However, in the above-described conventional configuration, the convergence coil is formed through several steps of disposing the split coil formed by winding in the winding form on the yoke cover and connecting the split coil. There is a problem in that the number of manufacturing steps is large, and when the split coil is arranged on the yoke cover, the split coil hits the yoke cover, and the electric wire of the split coil is damaged or broken.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a deflection yoke that prevents damages and breaks in electric wires, simplifies the manufacturing process, and reduces the number of manufacturing steps.

Means for Solving the Problems In order to achieve this object, a deflection yoke of the present invention is a tubular bobbin having a plurality of convex portions provided on an outer surface and a collar portion provided on an end surface of the convex portion. And a coil formed by winding a winding around the convex portion of the bobbin, and the bobbin is arranged on the yoke cover.

Operation With this configuration, the winding is completely wound on the bobbin, the convergence coil is formed, and the mounting position on the yoke cover is accurately determined.

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

As shown in FIG. 1, when the convergence coil is composed of four pole coils, the bobbin 1 is provided with four winding frame portions composed of a winding frame 2 and a winding groove 3 symmetrically in the left-right and up-down directions and insulated from resin or the like. It is made of wood.

The process of forming the convergence coil using the bobbin 1 will be described below.

As shown in FIG. 2, the electric wire 5 drawn from the winding machine nozzle 4 is wound around one of the four winding frame portions of the bobbin 1.

As shown in FIG. 3, when the winding is finished on one winding frame portion, the upper and lower surfaces are rotated by 180 degrees, and then the electric wire 5 is wound on the adjacent winding frame portion. When moving from the first reel to the adjacent reel,
Only the bobbin 1 rotates, and the electric wire 5 remains connected.

Similarly, as shown in FIG. 4, the convergence coil formed by winding the electric wire around all of the four winding frame portions is inserted and arranged in the yoke cover 6 of the deflection yoke in the direction shown by the arrow.

As shown in FIG. 5, the yoke cover 6 in which the convergence coil is arranged is fixed to the neck portion 9 of the cathode ray tube with a fixing band 10.
Install with. 11 is a magnet ring for convergence adjustment, 12 is a horizontal deflection coil, 13 is a vertical deflection coil, 14 is an insulating frame, and 15 is a core.

As described above, according to the present embodiment, the winding frame and the winding groove 4
By arranging the convergence coil formed by winding the electric wire around the bobbin provided with the individual winding frame portions on the yoke cover, it is possible to obtain a deflection yoke with high quality and high reliability without causing damage or disconnection of the electric wire. . Further, since the convergence coil can be formed by a simple process, the number of steps can be significantly reduced and the cost can be reduced as compared with the conventional several processes for forming the convergence. According to the experimental results, it took about 18 minutes to form the convergence coil in the past, but it was possible to form the convergence coil in about 20 seconds in the present invention.

Effect of the Invention As is clear from the above description of the embodiments, the deflection yoke of the present invention has a convergence coil formed by winding an electric wire around a bobbin provided with a winding frame portion including a winding frame and a winding groove on the yoke cover. Due to the arrangement, high quality and high reliability,
It is possible to realize an excellent deflection yoke that can reduce the cost.

[Brief description of drawings]

1 (a), 1 (b) and 1 (c) are a perspective view, a plan view and a side view of a bobbin of a deflection yoke according to an embodiment of the present invention, and FIG. 2 shows a state in which an electric wire is wound around the bobbin. 3 and 4 are views showing a state in which the bobbin is wound on the first bobbin and finished to be wound on an adjacent bobbin, FIG. 4 is a view showing a state in which the convergence coil is inserted into the yoke cover, and FIG. 5 is a view showing the present invention. FIG. 6 is a cross-sectional view showing the main part of the deflection yoke, FIG. 6 is a perspective view of a split coil of the conventional convergence yoke of the deflection yoke, and FIG. 7 is a state in which the split coil of the conventional convergence coil of the deflection yoke is inserted into the yoke cover. It is the figure which carried out the partial notch shown. 1 ... Bobbin, 2 ... Reel, 3 ... Roll groove, 6 ... Yoke cover.

Claims (1)

[Scope of utility model registration request] 1. A tubular bobbin having a plurality of convex portions provided on an outer side surface and a collar portion provided on an end surface of the convex portion, and a winding wire wound around the convex portion of the bobbin. A deflection yoke comprising a coil and the bobbin disposed on a yoke cover.