KR100467846B1 - Vertical deflection coil and method for making the same - Google Patents

Abstract

The present invention relates to a vertical deflection coil, and more particularly, the pressing portions 140 are formed in two places at predetermined intervals on the curved portion 130 of the vertical deflection coil, but the first pressing portion 142 is a neck. It is formed at the 1/3 point of the curved portion from the bent portion 120, the second pressing portion 144 is configured to be formed at the 1/2 point of the curved portion, the vertical deflection coil according to the present invention between the coils due to the pressing portion As the difference in spacing is reduced, the shipping rate is partially increased. As a result, the coil distribution is improved, thereby improving the quality while reducing the weight of the deflection coil.

Description

Vertical deflection coil and method for making the same

The present invention relates to a deflection coil, and more particularly, a deflection coil having improved deflection coils and its dispersion due to a higher loading rate therebetween by pressing two places at predetermined intervals on the curved portion of the coil. It relates to a manufacturing apparatus.

In general, a cathode ray tube (CRT) of a TV receiver or a monitor is provided with a deflection yoke, which is one of the most important components of a magnetic device.

The deflection yoke allows the electric signal transmitted in time series to be reproduced as an image on the screen of the cathode ray tube. The direction of the deflection yoke is changed when the electron beam passes through the magnetic field formed through the horizontal and vertical deflection coils. By using this method, the three-color beams scanned from the electron gun are deflected precisely into the fluorescent film applied to the screen surface of the cathode ray tube.

That is, the deflection yoke moves the electron beam scanned by the electron gun in the horizontal direction from left to right and at the same time moves from top to bottom to reproduce the image.

Figure 1 schematically shows an example of a cathode ray tube with a general deflection yoke.

Referring to this, in general, the deflection yoke 10 is installed in the RGB electron gun section 3 of the cathode ray tube 1 to apply an electron beam scanned from the electron gun 3a to the screen surface 2 of the cathode ray tube 1. Deflection to the fluorescent film.

The deflection yoke 10 is typically provided around the coil separator 20 and the horizontal deflection coil 30 and the vertical deflection provided on the inner and outer circumferences of the coil separator 20 to form a horizontal deflection magnetic field and a vertical deflection magnetic field, respectively. Coil 40 and a ferrite core 50 for strengthening the magnetic field of the deflection coil.

Here, the coil separator 20 is formed to have a substantially conical shape to precisely distinguish the positions of the vertical and horizontal deflection coils and to electrically insulate each other.

In addition, the deflection coil is to form a deflection magnetic field, the horizontal deflection coil 30 is assembled in the inner circumference of the coil separator 20 into upper and lower sides, and the vertical deflection is divided into the left and right sides in the outer circumference. Coil 40 is assembled.

In addition, a ferrite core 50 for strengthening the deflection magnetic field is assembled to surround the vertical deflection coil 40 around the outer circumference of the coil separator 20.

2 schematically illustrates a configuration of a general vertical deflection coil manufacturing apparatus. Referring to this, a vertical deflection coil manufacturing method will be described below.

First, generally, a vertical deflection coil manufacturing apparatus basically includes a bobbin 60 in which a coil C is wound, a plurality of guide rollers 64, 66, and a winding die 68.

The coil C supplied from the bobbin 60 is first wound about two times by the main tension adjusting unit 62, and then the tension force is adjusted through the plurality of main guide rollers 64 and the auxiliary guide rollers 66. It is guided to the winding die 68 in a state.

Here, a magnetic body 62a is formed inside the main tension adjusting unit 62 to generate a magnetic force when power is applied, and the magnetic body 62a prevents the coil from sagging.

That is, when a constant voltage is applied to the main tension adjustment unit 62, a magnetic force is generated in the magnetic body 62a, and the main tension adjustment unit pulls the coil C by this magnetic force, so that the sagging of the coil is prevented.

The winding die 68 is configured to be rotated by a separate rotating means, and when the winding die is rotated, the guided coil C is wound into the winding die and manufactured as a deflection coil.

The conventional vertical deflection coils produced by the deflection coil manufacturing apparatus configured as described above are illustrated in FIGS. 3 and 4.

Referring to this, the conventional vertical deflection coil 40 is provided with a screen vent 42 on the screen surface side of the cathode ray tube, a neck vent 44 on the electron gun side of the cathode ray tube, The neck band portion is configured to be integrally connected by the curved portion 46.

In addition, two vertical deflection coils 40 are formed in a pair, each of the vertical deflection coils are formed symmetrically with respect to both sides about the center line.

In general, the outer portion of the curved portion 46 is called the outer curve line 46a, the inner portion is called the inner curve line 46b, and the portion where the two vertical deflection coils face each other is called the ridge line 46c. .

However, the conventional vertical deflection coils manufactured as described above have a problem in that coil scattering occurs largely because the shipping rate decreases as the weight is reduced.

In other words, in order to survive the endless competition with LCD, CRT technology needs to improve the quality and reduce the unit cost.However, manufacturing a vertical deflection coil made of low weight to reduce the unit cost causes the coil to be largely deteriorated. It happens.

In addition, the conventional vertical deflection coils are frequently caused to sink the aging line portion due to the low weight, due to this there was a problem that the coil scattering occurs largely in the ridge line portion.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems described above, and its object is to provide a vertical deflection coil having a low weight and improving coil scattering.

It is another object of the present invention to provide a vertical deflection coil that has been improved in weight so as not to sink the ridge portion of the curved portion.

Another object of the present invention is to provide a method of manufacturing the vertical deflection coil.

The vertical deflection coil according to the present invention for achieving the above object is a vertical deflection coil in which the screen and neck band portion is connected by the curved portion, the curved portion is configured to form at least one pressing portion in parallel with the bent portion .

And, the pressing portion is configured to be formed up to the zigzag line at both ends of the curved portion.

In addition, the pressing portion is formed in two places, one of the pressing portion is formed at the 1/3 point of the curved portion from the neck band portion, the other pressing portion is configured to be formed at the 1/2 point of the curved portion.

In addition, the pressing portion is configured to have a depth of 1 mm.

Vertical deflection coil manufacturing method according to the present invention for achieving the above another object is a step of supplying a coil, the step of guiding the coil supplied through a plurality of guide rollers to the winding die, the guide coil is the inside of the winding die In the vertical deflection coil manufacturing method comprising the step of winding between the mold and the outer mold to have a designed shape, when the coil is wound in the designed shape by forming at least one protrusion in the outer mold direction on the inner mold of the winding die, And at least one pressing portion is formed in the curved surface portion.

And, it is preferable that the pressing portion is formed to the zigzag lines at both ends of the curved portion.

In addition, the pressing portion is formed in two places, one of the pressing portion is formed at the 1/3 point of the curved portion from the neck band portion, the other pressing portion is preferably formed at the 1/2 point of the curved portion.

In addition, the protrusion is configured to have a height of 1 mm so that the depth of the pressing portion is formed to 1 mm.

1 is a plan view schematically showing an example of a cathode ray tube installed with a general deflection yoke;

Figure 2 is a schematic view showing the configuration of a general vertical deflection coil manufacturing apparatus,

3 is a front view showing a conventional vertical deflection coil;

4 is a side view of FIG. 3;

5 is a front view showing a vertical deflection coil according to the present invention,

6 is a side view of FIG. 5;

7 is a principle diagram of a winding mold schematically shown to explain a method of manufacturing a vertical deflection coil according to the present invention.

◎ Explanation of symbols for main part of drawing

1: cathode ray tube 2: screen surface

3: electron gun 3a: electron gun

10: deflection yoke 20: coil separator

22: screen portion 24: neck portion

24a: groove 30: horizontal deflection coil

40: vertical deflection coil 42: outer curve line

44: inner curve line 46: ridge line

50: ferrite core 60: bobbin

62: main tension adjustment unit 62a: magnetic material

64: main guide roller 66: auxiliary guide roller

68: winding die 68a: inner mold

68b: outer mold 69: protrusion

100: vertical deflection coil 110: screen band portion

120: neck band portion 130: curved portion

132: outer curve line 134: inner curve line

136: ridge line 140: depression

142: first pressing portion 144: second pressing portion

C: coil

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. The same components as in the prior art will be described using the same names and symbols.

5 and 6 are a front view and a side view showing a vertical deflection coil according to the present invention, Figure 7 is a principle diagram of a winding mold schematically shown to explain a manufacturing method of a vertical deflection coil according to the present invention.

5 and 6, two vertical deflection coils 100 according to the present invention are formed in pairs, and each vertical deflection coil is formed to be symmetrical with respect to a center line.

In addition, each vertical deflection coil 100 is provided with a screen band part 110 on the screen surface side of the cathode ray tube, and a neck band part 120 on the electron gun side of the cathode ray tube, and the screen band part and the neck. The vent portion is configured to be integrally connected by the curved portion 130.

Here, the outer portion of the curved portion 130 is generally referred to as the outer curve line 132, the inner portion is referred to as the inner curve line 134, and the portion where the two vertical deflection coils are opposed to the ridge line 136. It is called.

In addition, in the vertical deflection coil 100 according to the present invention, at least one pressing portion 140 is formed in the curved portion 130 in parallel with the bent portion.

Of course, the pressing portion 140 is preferably formed to be formed to the ridge line 136, both ends of the curved portion 130.

In addition, the pressing portion 140 is preferably formed in two places at a predetermined interval, the first pressing portion 142 is a third point of the curved portion 130 from the neck vent portion 120 Is formed, it is preferable that the second pressing portion 144 is formed at a half point of the curved portion 130.

In addition, the pressing portion 140 is automatically formed through the protrusions 69 provided on the inner mold when the coil C is drawn between the inner mold 68a and the outer mold 68b of the winding die 68 and wound. It is preferably configured to have a depth of about 1 mm.

Now, a method of manufacturing the vertical deflection coil 100 according to the present invention configured as described above will be described.

First, as described in the conventional manufacturing technique through FIG. 2, in general, a process of manufacturing a vertical deflection coil includes supplying a coil, guiding the coil supplied through a plurality of guide rollers, and guiding the winding mold. The coil is drawn between the inner mold and the outer mold of the winding die and is wound to have a designed shape.

In the manufacturing process of the present invention, as shown in FIG. 6, at least one protrusion 69 is formed on the inner mold 68a of the winding die 68 in the direction of the outer mold 68b so that the coil is wound into a designed shape. In this case, at least one pressing portion 140 is automatically formed on the curved portion 130 of the deflection coil.

At this time, the protrusion 69 is preferably configured to have a height of about 1 mm so that the depth of the pressing portion 140 is formed to about 1 mm.

The protrusion 69 is preferably attached to the inner mold 68a of the winding die 68 by welding or the like, but may be integrally formed when the inner mold is molded.

The vertical deflection coil according to the present invention constructed and manufactured as described above can improve the problem of coil distribution while implementing low weight due to the pressing portions 140 formed at approximately two positions at predetermined intervals.

In other words, by pressing the curved portion 130 of the vertical deflection coil 100 in two places, the separation between the coils is reduced, so that the loading rate can be partially increased in the middle portion, thereby resulting in a scatter reduction effect. This improves the quality of the vertical deflection coils.

In addition, as the curved portion 130 of the vertical deflection coil 100 is pressed by the pressing portion 140, a phenomenon in which the coils relatively move to the outer line portion occurs, which causes the aging line 136 to sink This prevents the problem of coil dispersion occurring in this area.

On the other hand, in the present embodiment, while the vertical deflection coil is manufactured, the pressing part is automatically formed, but if the same effect occurs, the pressing part is formed through the separate pressurizing unit after the manufacturing of the vertical deflection coil to form the pressing part on the curved part of the vertical deflection coil. You could do it.

As described above, the vertical deflection coil according to the present invention forms a pressing portion on the curved portion to reduce the separation difference between the coils, so that the shipping rate is partially increased, thereby improving the coil distribution, thereby improving the deflection coil. Implementing low weight has the effect of improving quality.

While the invention has been shown and described in connection with specific embodiments as described above, it is well known in the art that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the claims. Anyone who owns it can easily find out.

Claims (8)

In the vertical deflection coil in which the screen and neck bands are connected by curved surfaces, Vertical deflection coil, characterized in that at least one pressing portion formed in parallel to the bent portion in the curved portion. The method of claim 1, The pressing portion is a vertical deflection coil, characterized in that formed up to the zigzag line at both ends of the curved portion. The method according to claim 1 or 2, The pressing portion is formed in two places, one of the pressing portion is a vertical deflection coil, characterized in that the pressing portion is formed at the 1/3 point of the curved portion from the neck band portion, the other pressing portion is formed at the 1/2 point of the curved surface portion. The method of claim 3, The pressing portion is a vertical deflection coil, characterized in that configured to have a depth of 1mm. A step of supplying a coil, guiding a coil supplied through a plurality of guide rollers to a winding mold, and winding the guide coil into a winding shape between the inner mold and the outer mold of the winding die to have a designed shape In the deflection coil manufacturing method, Vertical deflection coil, characterized in that the step of forming at least one protrusion on the inner mold of the winding mold in the outer mold direction to form at least one pressing portion in the curved portion when the coil is wound in a designed shape Manufacturing method. The method of claim 5, The pressing portion manufacturing method of the vertical deflection coil, characterized in that to be formed up to the ridge line of both ends of the curved portion. The method according to claim 5 or 6, The pressing portion is formed in two places, one of the pressing portion is formed in the 1/3 point of the curved portion, the other pressing portion is a vertical deflection coil manufacturing method, characterized in that formed in the 1/2 point of the curved portion. The method of claim 7, wherein The projection has a height of 1mm vertical deflection coil, characterized in that configured to form a depth of the pressing portion 1mm.