KR20000007023U - Deflection yoke coma coil protection structure - Google Patents

Abstract

The present invention relates to a coma coil protection structure of a deflection yoke, comprising a bobbin having a substantially rectangular tube shape having at least a core and a coil wound around the outer circumferential surface of the bobbin a plurality of times; In the coma coil protection structure of a deflection yoke including a separator having a mounting groove proportional to the area of the coma coil, a locking jaw protrudingly formed on both sides of the mounting groove, and the upward deviation of the coma coil is prevented. At the same time, it is characterized in that it comprises a protective cover having a support jaw elastically supported on the locking jaw is formed in the shape of a roughly inverted oil (∩) to prevent the accumulation of dust and foreign matter at the same time. Equipped with a protective cover that covers the coma coil by elastically fitting to the locking projection protrudingly formed on both sides of the mounting groove of the neck portion, it is possible to overcome the upward separation of the coma coil due to external impact and shaking, and at the same time Since it is possible to prevent the deposition of foreign matter, there is an excellent effect to maximize the function of the deflection yoke.

Description

Deflection yoke coma coil protection structure

The present invention relates to the protection structure of the coma coil of the deflection yoke, and more specifically, the coma by the external impact and shaking by having a protective cover that covers the coma coil elastically fitted to the locking projection protrudingly formed on both sides of the mounting groove of the neck portion The present invention relates to a protection structure of a deflection yoke that can overcome the upward deviation of work and prevent the accumulation of dust and foreign substances.

In general, a deflection yoke for deflecting an electron beam emitted from an electron gun of a cathode ray tube includes a vertical deflection coil 110 for deflecting the electron beam in a vertical direction, and a horizontal deflection coil deflecting the electron beam in a horizontal direction. (Not shown) and the separator 120 to accurately distinguish the positions of the horizontal deflection coil and the vertical deflection coil 110 and to electrically insulate each other.

At this time, the electron beams of R (Red), G (Green), and B (Blue) emitted from the electron gun of the cathode ray tube are deflected at a predetermined angle by the deflection yoke 100 and pass through the through holes formed in the shadow mask. By sealing a stripe of each fluorescent surface mounted on the inner circumference of the panel and emitting light, a normal image can be realized on the screen of the television.

On the other hand, of the three electron guns of the cathode ray tube, the green electron gun in the center coincides with the center axis of the cathode ray tube, but the red and blue electron guns on the left and right sides are installed inclined slightly inward with respect to the central axis. In the image, the three electron beams should each be designed to focus on the holes of the shadow mask and to simultaneously reach the respective phosphors through the same holes.

In this case, the electron beam is accurately sealed to the inner circumference of the stripe of the panel, which is called landing. On the other hand, if the mis-landing occurs in which the electron beam deviates to the outer circumference of the stripe, the image of the screen is not cleared. Sometimes.

Here, as an example of the mislanding, the coma aberration generated by the deflection sensitivity with respect to the center beam is relatively stronger than the deflection sensitivity by the pair of side beams.

This coma aberration eventually causes a drop in image quality over the entire television screen and should be eliminated as much as possible, and the function is performed by the coma coil 130.

On the other hand, the coma coil 130 performing the above function is fixed on the neck portion 121 of the separator 120, the structure thereof will be described with reference to FIG.

Figure 2 is an exploded perspective view showing a partially enlarged coma coil protection structure of the deflection yoke according to the prior art.

As shown in FIG. 2, the coma coil 130 has a plurality of iron pieces stacked to form a core 131 having a substantially alphabetic (E) shape and a substantially rectangular tube shape so that the core 131 may be embedded therein. It consists of a bobbin 132 and a coil 133 wound a plurality of times on the outer circumferential surface of the bobbin 132.

The coma coil 130 having the above configuration is fitted and fixed to the mounting groove 121a recessed and molded on the neck portion 121 of the separator 120.

At this time, the mounting groove 121a has an area proportional to the size of the bobbin 132 of the coma coil 130, and from the bottom of the rear mounting groove 121a so as not to come out after the coma coil 130 is fitted. A rectangular stopper 122 is formed to protrude upward.

Here, the stopper 122 is installed upright from the bottom surface of the mounting groove 121a as shown in Figure 2 is to act to support the back of the coma coil 130.

By the way, in the conventional coma coil protection structure of the deflection yoke, a coma coil 130 composed of a core 131, a bobbin 132, and a coil 133 is formed by recessing the neck portion 121 of the separator 120. Since it is made of a structure that is simply fixed by the stopper 122 after being seated in the mounting groove 121a, the coma coil 130 is easily moved upward from the mounting groove 121a by an external impact or shaking. In addition to the separation, there is a problem that the external dust and foreign matters are deposited to greatly reduce the function of the deflection yoke (100).

Accordingly, the present invention has been devised to solve the above problems, the purpose of which is to provide a protective cover for protecting the coma coil to overcome the upward deviating phenomenon of the coma coil due to external impact and shaking In addition, it is possible to prevent the accumulation of dust and foreign matter at the same time to provide a deflection yoke coma coil protection structure that can maximize the function of the deflection yoke.

1 is a perspective view showing a general deflection yoke.

Figure 2 is an exploded perspective view showing a partially enlarged coma coil protection structure of the deflection yoke according to the prior art.

Figure 3 is an exploded perspective view showing a partially enlarged coma coil protection structure of the deflection yoke according to the present invention.

Explanation of symbols on the main parts of the drawings

10: protective cover 11: support jaw

100: deflection yoke 110: vertical deflection coil

120: separator 121: neck portion

121a: mounting groove 121b: locking jaw

122: stopper 130: coma coil

131: core 132: bobbin

133: coil

The present invention for achieving the above object is a coma coil consisting of a bobbin having a substantially rectangular tube shape having at least a core and a coil wound around the outer circumferential surface of the bobbin, and a recess formed on a neck portion to form an area of the coma coil. In the coma coil protection structure of the deflection yoke comprising a separator having a mounting groove proportional to the upper side, the locking jaw protruding on both sides of the mounting groove, and prevents the upward deviation of the coma coil at the same time In order to prevent the accumulation of dust and foreign matter in the shape of a roughly inverted oil (∩) shaped to include a protective cover having a support jaw elastically supported on the latching jaw is characterized by the basic features of the technical configuration .

Hereinafter, a preferred embodiment of the deflection yoke coma coil protective structure according to the present invention with reference to FIG.

Figure 3 is an exploded perspective view showing a partially enlarged coma coil protection structure of the deflection yoke according to the present invention, the same name and the same reference numerals will be used for the same configuration having the same function as the conventional configuration.

First, as shown in FIG. 3, the coma coil 130 has a plurality of iron pieces stacked to form a core 131 having a substantially alphabetic (E) shape and a rectangular shape so that the core 131 may be embedded therein. A bobbin 132 having a cylindrical shape and a coil 133 wound a plurality of times on an outer circumferential surface of the bobbin 132.

The neck 121 of the separator 120 for mounting the coma coil 130 is provided with a mounting groove 121a proportional to the area of the coma coil 130. On both sides, a locking jaw 121b in which the supporting jaw 11 of the protective cover 10 to be described later is elastically supported is protruded.

Meanwhile, the coma coil protection structure of the deflection yoke according to the present invention has a roughly alphabetical oil-shaped shape so as to prevent the upward departure of the coma coil 130 and to prevent the accumulation of dust and foreign substances at the same time. It is formed with a protective cover 10 having a support jaw 11 is elastically supported on the locking jaw (121b).

Referring to the coma coil fixing operation of the deflection yoke according to the present invention made of the above configuration.

First, when the pressure is held in the mounting groove 121a of the neck portion 121 by holding the coma coil 130, the stopper 122 protruding from the bottom surface of the mounting groove 121a may be used to close the coma coil 130. The fitting groove 121a is tightly fixed so as not to be separated from the inside.

Thereafter, the support cover 11 of the protective cover 10 protrudes on both sides of the mounting groove 121a by holding the protective cover 10 and pressing the upper side to the lower side in the form of covering the coma coil 130. The assembly is completed by allowing the molded locking jaw 121b to be engaged.

According to the coma coil protection structure of the deflection yoke according to the present invention as described above, by having a protective cover that is elastically fitted to the engaging projection protruded on both sides of the mounting groove of the neck portion to cover the coma coil, due to external impact and shaking It is possible to overcome the upward deviation of the coma coil and to prevent the accumulation of dust and foreign substances at the same time, thereby maximizing the function of the deflection yoke.

Claims (1)

A separator having a bobbin having a substantially rectangular cylindrical shape having at least a core embedded therein and a coil wound around the outer circumferential surface of the bobbin a plurality of times, and a mounting groove recessed on a neck portion and mounted in proportion to the area of the coma coil. In the coma coil protection structure of the deflection yoke, including, A locking jaw protruding from both sides of the mounting groove; A protective jaw is formed in the shape of a roughly inverted oil shape to prevent the coma coil from escaping upward and to prevent external dust and foreign matter from being deposited. Coma coil protective structure of the deflection yoke, characterized in that it comprises a cover.