JPS5854773Y2 - deflection yoke - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a deflection yoke having a deflection coil with a spiral winding formed by a tail crossover extending linearly in the axial direction.

Recently, a deflection yoke has been developed that improves coma aberration, astigmatism, spot distortion, efficiency, etc. by using a deflection coil whose tail crossover wire extends linearly in the axial direction and is wound in a saddle shape. ing.

In this deflection yoke, since the tail connecting wire portion of the deflection coil extends in a straight line, there is no need to form an enlarged part for storing the connecting wire at the rear end of the bobbin. The rear end side is also formed in a straight line.

Therefore, the position of the core attached to the outer surface of the bobbin is regulated by the flange formed on the bobbin at the front end of the bobbin, but it is free at the rear end of the bobbin, and it is difficult to fix the core on the outer surface of the bobbin. , for example, requires separate parts such as adhesives, which results in a significant deterioration in work efficiency and high costs.Furthermore, the assembly accuracy deteriorates, resulting in variations in the characteristics of the deflection yoke. It had a

The present invention relates to a deflection yoke aimed at eliminating the above-mentioned drawbacks, and in particular, the present invention relates to a deflection yoke having a structure that allows the core to be easily connected and fixed to the outer surface of the bobbin without using separate parts such as adhesives. It's about York.

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

Fig. 1 shows the basic structure of the deflection yoke of the present invention. In the figure, 1 is a horizontal deflection coil, the head connecting wire portion 2 is bent perpendicularly to the axial direction, and the tail connecting wire portion 3 is bent perpendicularly to the axial direction. It is formed into a hollow shape that stretches linearly in the direction.

4 is a horizontal coil bobbin, and horizontal deflection coil 1 is installed inside the main body.
is installed.

Reference numeral 5 denotes a vertical deflection coil, in which a head connecting wire portion 6 is bent perpendicularly to the axial direction, and a tail connecting wire portion 7 is formed into a cross-shaped winding extending linearly in the axial direction.

8 is a vertical coil bobbin, and a vertical deflection coil 5 is mounted on the inner surface of the main body, and a vertical deflection coil 5 is mounted on the outer surface of the horizontal coil bobbin 4.

9 is a core attached to the outer surface of the vertical coil bobbin 8.

The present invention provides a coupling structure between the vertical coil bobbin and the core in such a deflection yoke, and will be described below with reference to FIGS. 2 to 5.

2 and 3, the head of the vertical coil bobbin 8 is formed with a flange portion 11 on which the head crossover portion 6 of the vertical deflection coil 5 is disposed, and the main body 1 of the vertical coil bobbin 8
0 has a separator 1 on its inner surface that separates the vertical deflection coil 5.
2.12 is formed.

Further, on the outer surface (back surface) of the flange portion 11 of the vertical coil bobbin 8, a pair of coupling pieces 13 are diagonally arranged opposite to each other by 180°.
a.

13b is provided.

The coupling pieces 13 a and 13 b are for coupling and fixing the core 9 onto the outer surface of the vertical coil bobbin 8 .

The coupling pieces 13 a and 13 b are composed of a protruding piece 14.14 erected on the flange 11 and a core locking piece 15.15 protruding from each tip of the protruding piece 14.14. , is an abbreviated form.

On the other hand, as shown in FIGS. 4 and 5, the core 9 is provided with a vertical coil bobbin 8 diagonally opposite the head end 16 by 180 degrees.
A pair of notches 17 that correspond in position to the connecting pieces 13 a and 13 b and are combined with the connecting pieces 13 a and 13 b.
．． 17 is formed.

The width of the notch 17.17 provided in the core 9 is the same as that of the connecting piece 13.
It is set longer than the core locking piece portions 15.15 constituting the coupling pieces 13a, 13b so that the pieces a, 13b can fit into the notches 17.17.

In the deflection yoke having such a configuration, the coupling pieces 13a, 13
By aligning the positions of b and notches 17 and 17, placing the core 9 on the outer surface of the vertical coil bobbin 8, and slightly rotating the core 9, the core locking pieces of the connecting pieces 13a and 13b will be removed, as shown in FIG. The head end 16 of the core 9 is locked by 15.15, and the vertical coil bobbin 8 and the core 9 are connected (fixed) to each other.

As described above, according to the deflection yoke of the present invention, the bobbin and the core can be coupled and fixed through the coupling piece provided on the bobbin and the notch provided in the core, simply by covering the outer surface of the bobbin with the core. This technology does not require separate parts such as adhesives to fix the bobbin and core, reducing costs.It also improves work efficiency during assembly and enables automation, reducing assembly costs. In addition, it is possible to obtain a deflection yoke with stable characteristics due to the high assembly accuracy.In particular, it is possible to obtain a deflection yoke with stable characteristics etc. due to the high assembly accuracy. If applied to a deflection yoke having a deflection coil, the practical effect will be great.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional side view of essential parts of the basic configuration of the deflection yoke of the present invention, Fig. 2 is a perspective view of a vertical coil bobbin according to an embodiment of the present invention, Fig. 3 is a plan view of the vertical coil bobbin, and Fig. 4 5 is a perspective view of the core, FIG. 5 is a plan view of the core, and FIG. 6 is a perspective view of the main parts showing how the vertical coil bobbin and the core are connected. 8... Vertical coil bobbin, 9... Core, 11... Bobbin flange portion, 13 a, 1
3b...Connection piece, 16...Core head end, 17.17...Notch.

Claims (1)

[Scope of utility model registration request] A deflection yoke configured by attaching to the inner surface of a bobbin a deflection coil of a hollow shape with a tail crossover line extending linearly in the axial direction, and a plurality of coupling pieces on the outer surface of the flange of the bobbin. At the same time, a plurality of notches are provided at the head end of the core to be attached to the outer surface of the bobbin, corresponding to the connecting pieces of the bobbin, and the bobbin and the core are connected through the connecting pieces and the notches. A deflection yoke characterized by being fixedly coupled.