KR950002054Y1 - Wire connector assembly for electron gun - Google Patents

Abstract

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Description

Wire connector assembly of color water gun

1 is an assembly view of a conventional color gun electron gun.

2 is a cross-sectional view of an electron gun for a conventional color receiver.

Figure 3 is a perspective view of the main portion of the electron gun according to the present invention.

4 is an enlarged perspective view of main parts of FIG. 3;

* Explanation of symbols for main parts of the drawings

3: third electrode 3a: flange portion

3: Positioning groove 5: Wire connector

7: bead glass 5a: bend

The present invention relates to an inline type electron gun for color water pipes, and in particular, improves the degree of coupling of wire connectors that apply voltage to each electrode of the electron gun, and equalizes the potential of the neck inner wall during the manufacture of CRT to improve the withstand voltage characteristics. The present invention relates to a wire connector assembly of an electron gun for color water pipes, which is intended to improve automatic assembly of welding operations.

The color gun tube electron gun is composed of a first electrode (1), a second electrode (2), a third electrode (3) and a fourth electrode (4), the third electrode (3) and the fourth electrode (4) It is a main electrode which forms a main lens system.

An anode voltage of about 22 KV is applied to the fourth electrode 4, and 6.2 KV, which is about 28% of the anode voltage as a focus voltage, is applied to the third electrode 3 through the step pin 6 connecting the outside and the inside of the CRT. Is approved.

At this time, the external power source of the step pin 6 is connected to the third electrode 3, and the wire connector 5 is connected to the flange of the step pin 6 and the third electrode 3. Welded and fixed.

In general, the wire connector 5 applying the voltage uses a thin ribbon material or a wire. However, when the thin ribbon is used, the wire connector is mainly used because of the disadvantage of being easily transformed into an external impact when assembling the electron gun.

As shown in FIGS. 1 and 2, the wire connector 5 surrounds the bead glass 7 and serves as an arc shield to prevent discharge in the inner wall of the neck glass 8, and thus, the wire connector 5 Is manufactured and assembled to form a conductive line and an arc shield.

When assembling the wire connector 5, each electrode of the electron gun is maintained at a predetermined interval, and then the bead glass 7 is melt-compressed to place the wire connector 5 on the bead glass 7 in the assembled semi-finished product. After adjusting, the resistance where the protrusion of the flange of the third electrode 3 meets the wire connector 5 is crimp-welded with a resistance welder.

At this time, since the bead glass 7 and the wire connector 5 are formed in a certain arc, the bead glass 7 should be an ideal assembly state (5) of the design according to the bead glass 7 contact state during welding, but often left and right asymmetrical incorrect assembly state (5). ').

The distance between the outer arc of the wire connector 5 and the neck glass 8 is equal to the basic design of the ideal electron gun, but it is installed based on the bead glass 7 and then the wire is welded to the flange. Incorrect assembly state 5 'is caused, and accordingly, withstand voltage characteristics deteriorate around the wire connector 5 of the third electrode 3, resulting in poor discharge. That is, the smaller the distance between the wire connector 5 and the neck inner wall in the left and right asymmetric positions of the wire connector 5, the higher the discharge generation rate than the other.

This problem needs to be improved in recent years because the reliability of the breakdown voltage characteristics is emphasized in the products using high anode voltage.

The present invention forms a positioning groove in the flange of the electrode protrusion to which the wire connector is welded to solve the above-mentioned conventional defect, and has a bent part in the wire connector to be welded at the precise position when the wire connector and the flange part are joined. To a wire connector assembly of an electron gun for a color water pipe, in which an arc shield portion on a wire connector improves lateral symmetry with an inner wall of a neck glass to improve withstand voltage characteristics. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Same as

FIG. 3 is a perspective view of the main part of the electron gun according to the present invention, and FIG. 4 is an enlarged view of the main part of FIG. 3, and as shown therein, the flange 3a of the third electrode 3 in the inline type electron gun. Positioning grooves 3b in the wire connector 5 and the bent portion 5a of the wire connector 5 are formed in the positioning grooves 3b of the third electrode 3. Inserted into and welded together, reference numeral 9 in the drawings shows a shield cup.

Conventionally, when assembling the electron gun, the wire connector 5 is contacted with the bead glass 7 and then symmetrically with the naked eye, and then welded to the flange of the electrode protrusion. Therefore, the wire connector 5 cannot be fixed at the correct position. The welding position is always constant by closely contacting the wire connector 5 covering the bent portion 5a of the 5) over the positioning groove 3b of the third electrode 3 and then surrounding the bead glass 7 and welding the flange contact surface. Done.

The present invention as described above can easily facilitate the welding position of the wire connector, the assembly automation is possible.

In addition, since the degree of assembly of the wire connector is increased, the symmetry of the interval between the inner wall of the neck glass in the CRT is high, and the stress failure, which is a poor withstand voltage characteristic, generated in the wire connector system can be significantly reduced.

Claims (1)

A plurality of electrodes (1) to (4), bead glass (7) for coupling each of the electrodes (1) to (4), a conductive wire for applying a voltage and a wire connector (5) serving as an arc shield for suppressing discharge In the in-line type electron gun having (), the positioning groove (3b) is formed in the flange portion (3a) of the third electrode (3), and the bent portion (5a) is formed in the wire connector (5), so that the wire A wire connector assembly of an electron gun for a color receiver, characterized in that the bent portion (5a) of the connector (5) is inserted into the positioning groove (3b) of the third electrode (3) and welded.