JPS5841638Y2 - deflection yoke - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a deflection yoke having a deflection coil shaped like a spiral winding formed by extending the tail crossover line in a straight line 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 portion at the rear end of the bobbin to accommodate the connecting wire, and normally the rear end of the bobbin The end sides are 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 concerns York.

The configuration of the present invention will be explained below using examples.

Fig. 1 shows the basic configuration 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 in the axial direction. It is formed into a hollow shape that is stretched out in a straight line.

4 is a bobbin, and the horizontal deflection coil 1 is attached to the inner surface of the main body.

Reference numeral 5 denotes a vertical deflection coil, which is formed into a cross-shaped winding with a head connecting wire portion 6 bent perpendicularly to the axial direction and a tail connecting wire portion 7 extending linearly in the axial direction, and is attached to the outer surface of the bobbin 4. be done.

8 is a core installed on the outer surface of the vertical deflection coil 5.

In the present invention, in such a deflection yoke, the bobbin 4 and the core 8
This will be explained below with reference to FIGS. 2 to 6.

A flange portion 11 formed on the head of the bobbin body 10 of the bobbin 4 has a head connecting wire portion 2 of the horizontal deflection coil 1 disposed on the inside, and a head connecting wire portion 6 of the vertical deflection coil 5 on the outer surface. will be placed.

Reference numeral 12.12 denotes a locking pin that stands 180 degrees opposite the outer surface of the flange portion 11.

The locking pin 12.12 has a plurality of protrusions 13.13 for preventing removal in the circumferential direction of the outer surface, and is connected to a mounting hole 16.16 formed in the fixing plate 14, which will be described later. engage.

The fixing plate 14 is composed of a flange portion 15 and a neck portion 17, and the flange portion 15 has a mounting hole 16 facing 180° and engaging with a locking pin 12.12 formed on the outer surface of the flange portion 11 of the bobbin 4. .16 is formed.

Further, the neck portion 17 of the fixing plate 14 is connected to the head end 19 of the core 8.
A hole 18 having a shape along the outer surface of the head end 19 of the core 80 is formed inside the neck portion 17 .

In the deflection yoke having such a configuration, in order to connect the bobbin 4 and the core 8, the vertical deflection coil 5 is connected to the main body 10 of the bobbin 4.
With the core 8 attached to the outer surface of the vertical deflection coil 5, the fixing plate 14 is placed over the bobbin 4 from the tail side, and the fixing plate 14 is attached to the locking pin 12.12 of the bobbin 4. 16. After that, fixing plate 1
4 to an appropriate position, locking pin 12
．． The fixing plate 14 is fixed by the jetty 13 provided on the bobbin 12, and at the same time, the neck portion 17 of the fixing plate 14 is caught on the head end 19 of the core 8, and the core 8 is coupled and fixed to the bobbin 4.

In this case, the head end 19 of the core 8 and the bobbin 4 do not need to be fixed in particular between the vertical deflection coil 5 and the bobbin 4.
The head crossover portion 6 of the vertical deflection coil 5 is fixed between the flange portion 11 of the vertical deflection coil 5, and the vertical deflection coil 5 can be fixed at the same time as the core 8 is fixed.

As described above, according to the deflection yoke of the present invention, a plurality of locking pins each having a plurality of protrusions are erected on the outer surface of the flange portion of the bobbin, and the head end of the core is held on the locking pin. The fixing plate is fixed through the mounting hole, and the core is bonded and fixed to the bobbin. There is no need for separate parts such as adhesives to fix the bobbin and the core, reducing costs. Workability during assembly has been improved and automation has become possible.
In addition to reducing assembly costs, it is possible to obtain a deflection yoke with stable characteristics due to improved assembly accuracy.In particular, the tail crossover wire is formed in a straight line in the axial direction. If applied to a deflection yoke having a deflection coil with a square winding, the practical effect will be great.

[Brief explanation of the drawing]

Fig. 1 is a sectional side view of essential parts of the basic structure of the deflection yoke of the present invention, Fig. 2 is a perspective view of a bobbin in an embodiment of the present invention, Fig. 3 is a plan view of the bobbin, and Fig. 4 is the same.
FIG. 5 is a perspective view of the locking pin in the embodiment; FIG. 5 is a perspective view of the fixing plate in the embodiment, and FIG. 6 is a plan view. 1...Horizontal deflection coil, 4...Bobbin, 5...Vertical deflection coil, 8...Core, 11...Bobbin flange part , 12.12...
... Locking pin, 13.13 ... Jetty, 14
...Fixing plate, 16.16...Mounting hole,
19...Core head end.

Claims (1)

[Scope of utility model registration request] In a deflection yoke in which a deflection coil of a hollow shape with a tail crossover wire extending linearly in the axial direction is attached to the inner surface of a core via a bobbin, an outer surface periphery is attached to the outer surface of the flange portion of the bobbin. A plurality of locking pins having a plurality of protrusions in a direction are erected, and a plurality of fixing plates for holding the head end of the core are attached to the locking pins, and a plurality of locking pins are provided corresponding to the locking pins. A deflection yoke characterized in that the core is fixed to the bobbin through a hole.