JP2702342B2 - Terminal plate for deflection yoke - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deflection yoke terminal plate for deflecting an electron beam emitted from an electron gun in a cathode ray tube such as a picture tube of a television receiver.

[0002]

2. Description of the Related Art A cathode ray tube such as a picture tube of a television receiver has a deflection yoke for deflecting an electron beam emitted from an electron gun incorporated in a rear neck in a vertical direction and a horizontal direction. It is attached from the outside to the boundary between the and the funnel. This deflection yoke usually has a horizontal deflection coil wound in a saddle shape inside a resin bobbin spread in a trumpet shape, and a vertical deflection coil similarly wound in a saddle shape outside the bobbin. And a saddle / saddle type in which a vertical deflection coil is wound around the outer periphery of the core in a toroidal shape.

FIG. 6 shows a conventional saddle / saddle type deflection yoke.

In this figure, reference numeral 1 denotes a resin bobbin formed in a trumpet shape, V denotes a vertical deflection coil wound around the resin bobbin 1 in a saddle shape, and 3 denotes a vertical deflection coil V. The core 4 is provided on the small diameter side of the bobbin 1 and has a vertical deflection coil V and a horizontal deflection coil H (not shown) wound inside the bobbin 1 in a saddle shape. A rear enlarged portion having a groove for wiring a lead wire on a side portion thereof is provided outside the core 3 through the rear enlarged portion 4 between a part of the rear enlarged portion 4 and a large-diameter side portion of the bobbin 1. Is a rectangular terminal plate attached to the terminal board.

[0005] The terminal plate 5 is provided with a differential coil 6 for adjusting the inductance of the vertical and horizontal deflection coils, and electrical components such as resistors used for preventing damping and linking. Rear enlarged part 4
Is locked by a claw formed on the base. That is, as shown in FIG. 7, the rear enlarged portion 4 has a plurality of layers of fin-shaped portions for guiding a plurality of lead wires of the vertical and horizontal deflection coils to the terminal plate 5 while maintaining an insulated state. 4b are formed, and two claws 4u and 4d for locking the terminal plate 5 are formed on the fin-shaped portions 4b of the uppermost layer and the lowermost layer. On the other hand, the terminal plate 5 has a cutout 5u and a hole 5d. The distance between the notch 5u and the hole 5d is standardized according to the distance between the claws 4u and 4d.
Then, the terminal plate 5 is attached by hooking the nail 4u formed on the uppermost layer into the notch 5u and inserting the nail 4d formed on the lowermost layer into the hole 5d.

By the way, inside the rear enlarged portion 4, FIG.
As shown in (1), the transition Ha of the horizontal deflection coil H is inserted. When a horizontal deflection coil H having a thin transition Ha is adopted, in order to secure the mounting stability of the horizontal deflection coil H,
The distance between the uppermost layer and the lowermost fin-shaped portion 4b is reduced. When the distance between the uppermost layer and the lowermost fin-shaped portion 4b is reduced in this manner, the claws 4u formed on the uppermost layer as they are
Also, the distance between the lower terminal and the claw 4d formed in the lowermost layer becomes narrow, and the standardized terminal plate 5 cannot be used. Therefore, in order to be able to use the standardized terminal board 5, as shown in FIG. 9, the support portion of the lowermost nail 4d is formed in an "L" shape, and the uppermost nail 4u and the lowermost The distance between the notch 4d and the notch 5u of the terminal plate 5 and the hole 5d is standardized.

[0007]

When the inductance of the vertical and horizontal deflection coils is adjusted by the differential coil 6, when the differential coil 6 is wound around the hole 6a of the cylindrical bobbin around which the differential coil 6 is wound (see FIG. 6). The inductance is changed by rotating the iron core inserted into the core with an adjustment rod and sliding the iron core by this rotation.
6, the direction of the differential coil 6, that is, the direction of the hole 6a of the cylindrical bobbin is horizontal, and the adjustment with the adjusting rod is also performed from the lateral direction. However, since it is difficult to adjust the terminal plate 5 for the differential coil 6 from the lateral direction, it is difficult to adjust the terminal coil 5 from the upper direction. Deflection yokes have also emerged that can also be mounted on the left or right side.

However, in the case where the terminal plate 5 is mounted on the left or right side and the horizontal deflection coil H having a small crossover Ha is employed, it is necessary to use the standardized terminal plate 5 on the left or right side. , On the left or right side, the supporting portion of the lowermost claw 4d needs to be formed in an “L” shape. However, the supporting portion of the lowermost claw 4d on the left or right side is referred to as “L”. It may not be possible to form an "L" shape. That is, when the bobbin 1 is manufactured, one bobbin is divided into two right and left parts, and the left and right bobbins are separately molded by a mold. The direction of pulling out the mold is indicated by an arrow in FIG. To the left and right,
Alternatively, when the support portion of the lowermost claw 4d on the right side is to be formed into an "L" shape, a hole is opened in the portion a of FIG. 10 and the shape of the portion b cannot be removed. The vertical deflection coil V is mounted from the horizontal direction as shown in FIG. 11. However, if the support portion of the lowermost claw 4d is formed into an "L" shape, the portion becomes an obstacle, and the vertical deflection coil is mounted. You may not be able to attach. In addition, the support portion of the uppermost claw 4d may not be formed in an “L” shape due to the assembly. As described above, since the support portions of the uppermost and lowermost claws 4d cannot be formed in an “L” shape on the left and right sides, in other words, the terminal board 5 in which the distance between the uppermost layer and the lowermost nail is standardized. Therefore, the terminal plate 5 to be mounted on the left and right sides has to be newly formed of another type when mounted on the upper and lower sides, thereby increasing the manufacturing cost.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to attach one type of deflection yoke terminal plate to a different type of terminal plate mounting portion formed on a deflection yoke bobbin. It is to be.

[0010]

In order to achieve the above object, a terminal plate for a deflection yoke according to the present invention has opposed mounting portions respectively adapted to different types of terminal plate mounting portions formed on a bobbin for a deflection yoke. The structure is formed on two sides.

[0011]

Now, on the upper side of the deflection yoke terminal plate, there is formed a mounting portion x which is compatible with the type X terminal plate mounting portion formed on the deflection yoke bobbin. It is assumed that a mounting portion y that is compatible with the type Y terminal plate mounting portion formed on the bobbin is formed.

For example, when two terminal plate mounting portions of type X and type Y are formed on one deflection yoke bobbin, the deflection yoke terminal plate is mounted on the type X terminal plate mounting portion of the bobbin. The deflection yoke terminal plate is mounted on the bobbin so as to correspond to the portion x, and the deflection yoke terminal plate is mounted on the bobbin with the type Y terminal plate mounting portion of the bobbin corresponding to the mounting portion y of the deflection yoke terminal plate. That is, two types of terminal board mounting portions of the bobbin can be handled by one type of deflection yoke terminal board.

[0013]

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

FIG. 1 is a plan view of a deflection yoke terminal plate P according to an embodiment of the present invention, and FIG. 2 is a rear enlarged portion of a deflection yoke bobbin B to which the deflection yoke terminal plate P of FIG. 1 is attached. It is a perspective view which shows a part of.

As shown in FIG. 2, the rear enlarged portion of the bobbin B has four layers of fins f1, f2, f3 and f4, and the fins f2 and f2 of the second layer in the vertical direction. Two claws vu and vd are formed on the fourth layer fin portion f4, and claws hu and hd are respectively formed on the second layer fin portion f2 and the fourth layer fin portion f4 in the left-right direction. Two are formed each. In this case, the claws vd of the fins f4 of the fourth layer in the vertical direction are, as shown in FIG.
4, the claw hd of the fin-like portion f4 of the fourth layer in the left-right direction is formed by extending the fin-like portion f4 as shown in FIG. Is formed at the tip of Therefore, the claws v of the second layer in the vertical direction
The distance d1 between u and the fourth layer nail vd is greater than the distance d2 between the second layer nail hu and the fourth layer nail hd in the left-right direction. In addition, the interval between the two claws of the second layer is up and down,
The same distance d3 is set in both the left and right directions,
The distance between the two claws is the same distance d in the vertical and horizontal directions.
It is 4.

The deflection yoke terminal plate P is made of, for example, a synthetic resin such as polyethylene terephthalate.
In addition to the terminal mounting hole, the differential coil mounting hole, and the lead wire drawing hole, two types of mounting portions are formed. That is, in the upper side U of the deflection yoke terminal plate P, the notch P
1. A mounting portion including mounting holes P2 and P3 is formed, and a mounting portion including a notch P4 and mounting holes P5 and P6 is formed on the lower side D. Note that “「 ”shown in FIG. 2 is an identification mark for identifying the upper side or the lower side.

The notch P1 on the upper side U and the mounting holes P2, P3
Is equal to the distance d1 between the claw vu of the second layer and the claw vd of the fourth layer in the vertical direction of the bobbin B, and the distance between the notch P4 on the lower side D and the mounting holes P5 and P6 is The distance d2 between the nail hu of the second layer and the nail hd of the fourth layer in the left-right direction of B is equal to d2. Notch P on upper side U and lower side D
1, the length of P4 is the claw distance d3 of the second layer of the bobbin B.
, The distance between the two mounting holes P2, P3 on the upper side U,
The distance between the two mounting holes P5 and P6 on the lower side D is equal to the claw distance d4 of the fourth layer of the bobbin B.

That is, the notch P1 and the mounting holes P2 and P3 of the deflection yoke terminal plate P are formed at positions suitable for the second-layer claws vu and the fourth-layer claws vd of the bobbin B in the vertical direction. The notch P4 on the side of the deflection yoke terminal plate P on which the identification mark "」 "is provided, and the mounting holes P5 and P6 are suitable for the second layer nail hu and the fourth layer nail hd of the bobbin B in the left-right direction. It is formed in the position where it does. Therefore, as shown in FIG. 5, when the deflection yoke terminal plate P is mounted in the vertical direction of the bobbin B, the side with the identification mark “◎” is mounted on the lower side. What is necessary is just to mount it with the side with the mark "「 "facing upward.

Thus, even if two types of terminal plate mounting portions are formed on the bobbin B, only one type of deflection yoke terminal plate P need be prepared.
Since it is not necessary to separately produce two types of terminal plates for the deflection yoke, it is possible to reduce the cost. In addition, since the correspondence between the two mounting portions of the bobbin B and the two mounting portions of the deflection yoke terminal plate P can be easily recognized by the identification mark “」 ”, the mounting operation is simplified.

The present invention is not limited to the above-described embodiment. For example, the deflection yoke terminal plate having two mounting portions can be mounted on different bobbins.

[0021]

According to the present invention, one type of deflection yoke terminal plate can be mounted on a different type of terminal plate mounting portion formed on the deflection yoke bobbin, and the deflection yoke terminal plate to be manufactured. Can be reduced, so that the production cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view of a deflection yoke terminal plate according to an embodiment of the present invention.

FIG. 2 is a view showing an example of a deflection yoke bobbin to which a deflection yoke terminal plate is to be attached according to an embodiment of the present invention.

FIG. 3 is a diagram showing a vertical mounting structure of the bobbin shown in FIG. 2;

FIG. 4 is a view showing a vertical mounting structure of the bobbin shown in FIG. 2;

FIG. 5 is a view showing how to attach a terminal plate for a deflection yoke according to an embodiment of the present invention.

FIG. 6 is a perspective view of a saddle / saddle type general deflection yoke.

FIG. 7 is a view showing a conventional mounting structure of a deflection yoke bobbin and a terminal plate.

FIG. 8 is a diagram showing the relationship between the spacing between the claws of the upper and lower layers of the bobbin and the crossover of the horizontal deflection coil.

FIG. 9 is a diagram showing a modified example of a bobbin mounting structure for adapting to a standardized conventional deflection yoke terminal plate.

FIG. 10 is a view showing the reason why the interval between the claws of the upper and lower layers cannot be adapted to the conventional standardized terminal plate for deflection yoke in the left-right direction of the bobbin due to the mold.

FIG. 11 is a diagram showing the reason why the distance between the claws of the upper and lower layers cannot be adapted to the conventional standardized deflection yoke terminal plate in the horizontal direction of the bobbin in relation to the mounting direction of the horizontal deflection coil.

[Explanation of symbols]

B Deflection yoke bobbins vu, vd, hu, hd Claws formed on bobbins P Deflection yoke terminal plates P1, P4 Notch portions P2, P3, P5, P6 formed on deflection yoke terminal plates Deflection yoke terminals Mounting holes formed in the plate

Claims (1)

(57) [Claims] 1. A deflection yoke terminal plate, wherein mounting portions respectively adapted to different types of terminal plate mounting portions formed on a deflection yoke bobbin are formed on two opposite sides.