KR930006887B1 - Apparatus for controlling position of deflection yoke - Google Patents

Abstract

The position controller comprises a horizontal moving means (2), a gear shaft (10) rotated by a motor (11), a member (13) moving along the gear shaft, a moving pannel (9) integrated with the moving member, a means (3) inclining X shaft composed of a gear shaft (15) rotated by a motor (14) and a sector gear (17), an Y shaft inclining means composed of a gear shaft (20) rotated by a motor (19) , a sector gear (22) geared to the gear shaft and a rotating member (23), a frame (24) fixed to the rotating member, a cylinder with rollers (28,28a), and a motor rotating the driving roller (28a).

Description

Deflection yoke positioning device

1 is a longitudinal sectional view of the deflection yoke position adjustment device of the present invention,

2 is a cross-sectional view taken along the line II-II of FIG.

3 is a cross-sectional view taken along line III-III of FIG.

4 is a cross-sectional view taken along the line IV-IV of FIG.

* Explanation of symbols for main parts of the drawings

1: deflection yoke 2: horizontal movement means

3,4: X, Y axis inclination means 5: Rotating means

6: rail 7: bad

8: doorcar 9: moving panel

10: support member 11: motor

12: gear shaft 13: moving member

14,19: motor 15,20: gear shaft

16,21: Support 17,22: Fan gear

24: frame 25: frame

26: bracket 27: V-shaped groove

28,28a: Roller 29,31: Pulley

30: motor 32: belt

The present invention relates to a deflection yoke position adjusting device, and in particular, when the deflection yoke is mounted on the CRT, it can be assembled while finely adjusting the horizontal, vertical and inclined positions of the deflection yoke. The present invention relates to a deflection yoke position adjusting device capable of increasing and improving the operation performance of the CRT.

In general, the deflection yoke installed in the neck portion of the CRT controls the deflection angle of the electron beam emitted from the CRT of the CRT so that the electron beam accurately reaches a predetermined phosphor on the fluorescent surface. And the deflection yoke is fixed to the neck portion of the CRT tube by selecting the position of the deflection yoke, which allows the operator to check the image quality of the image formed on the fluorescent surface by operating the electron gun. It is supposed to be fixed.

That is, in order to select the position of the deflection yoke installed in the CRT as described above, the deflection yoke is moved back and forth in the longitudinal direction of the neck portion while varying the inclination angle while being loosely inserted into the neck portion of the CRT. For example, the deflection yoke rotating mechanism known as Japanese Patent Application Publication No. 57-52690 has an arm installed with a roller for catching and rotating the deflection yoke. The deflection yoke is chucked and then rotated, and a worm wheel is installed at the tip of the arm so that the worm wheel is rotated by a worm gear driven by a motor. It is possible to change the angle of inclination.

However, the conventional technique is that a roller supporting the deflection yoke is fixedly connected to the arm so that the roller cannot change a distance with respect to the arm, so that when the dimensions of the deflection yoke are different, the deflection yoke is rotated. The center of the deflection yoke is eccentrically different from the center of rotation of the plurality of rollers, so that the plurality of rollers cannot hold the deflection yoke with uniform force, and the worm wheel and worm gear installed on the arm There is a problem that the bias angle change of the deflection yoke is given only in one direction, and the deflection yoke cannot be moved in the horizontal direction.

Accordingly, the present invention is invented to solve the above problems, and by deflecting the yoke can be rotated around the longitudinal direction of the CRT as well as to be able to tilt back and forth in all inclined directions to deflect. It is an object of the present invention to provide a deflection yoke position adjusting device capable of precisely installing oak at a predetermined position of the CRT.

The present invention for achieving the above object is a gear shaft which is rotated by a motor provided in the bed is a horizontal moving means capable of horizontally moving the deflection yoke with respect to the neck portion of the CRT, and the feed conveyed in this gear shaft A member; Gear shafts which are installed in the horizontal movement unit and the X and Y axis inclined means perpendicular to each other so as to give the inclination angle to the deflection yoke to the X and Y axes, respectively, by the motor, and by this gear shaft A fan gear which is finely rotated; The rotating means for rotating the deflection yoke is provided with a plurality of cylinders installed in the frame and a roller having a V-shaped groove and a motor for rotating one drive roller is installed at the end of the cylinder, the rotation After the cylinder of the means is stretched to the minimum, a deflection yoke is inserted between the plurality of rollers installed at the tip of the cylinder, and then each cylinder is extended so that the rollers support the deflection yoke, The deflection yoke is moved forward and backward by driving the rotor to rotate the gear shaft, and by driving the motor of the X and Y axis inclining means, the gear shaft is rotated to finely rotate the fan gear. Is inclined along the X-axis or Y-axis, and the deflection is performed by driving the rotary motor. The rotation is so astute a predetermined angle, and is required to give the deflection of the cathode ray tube accurately set the relative position of oak depending on the quality of the image by operating the electron gun is formed in the display.

Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.

The deflection yoke position adjusting device of the present invention is provided with a horizontal moving means (2) for horizontally moving the deflection yoke (1), and the deflection yoke (1) is installed on the X axis or Y X-axis, Y-axis inclination means (3,4) that can give an inclination angle along the axis, and the rotation means (5) which is installed on the inclination means (3,4) to directly rotate the deflection yoke (1) Consists of.

Wherein the horizontal movement means (2) for horizontally moving the deflection yoke (1) in the longitudinal direction of the neck portion (N) of the Braun tube (B) is provided with a rail (6) on both sides in the longitudinal direction (7) And a movable panel (9) provided with an arc (8) which can be moved along the rail (6) of the bed (7), the support member (10) being provided on both sides of the bed (7). It is fixedly installed vertically to support the gear shaft 12 that is rotated by the motor 11, the gear shaft 12 is formed with a screw portion therein, the horizontal movement along the gear shaft 12, the movement The movable member 13 fixed to the center of the panel 9 is fitted.

In addition, the X-axis, Y-axis inclination means (3, 4) provided on the moving panel (9) of the horizontal moving means (2) may be changed in position, but in the present invention, the X-axis inclination means (3) at the bottom, The upper side has a structure in which the Y-axis inclination means 4 is provided.

That is, the X-axis inclination means 3 has a motor 14 provided on one side of the moving panel 9 of the horizontal moving means 2 and both ends of the gear shaft 15 rotated by the motor 14. A support 16 for supporting the fan is installed, and the gear shaft 15 is provided with a fan gear 17 which is finely rotated by the gear shaft 15, and the rotation shaft 17a of the fan gear 17 is provided. While the lower side is rotatably installed on the moving panel 9 of the horizontal moving means 2, the Y-axis inclination means 4 is installed in a direction orthogonal to the X-axis inclination means 3 and is almost similar. The Y-axis inclination means 4 is provided with a support plate 18 integrally fixed to the rotary shaft 17a of the fan-shaped gear 17 of the X-axis inclination means 3, and the motor 19 A support 21 for supporting both ends of the gear shaft 20 that rotates by) is installed, and the gear shaft 20 is also finely rotated by the gear shaft 20. Fan-shaped gear 22 that is installed connection, the fan-shaped gear 22 on one side and is pivotable member 23 is fixedly connected in one piece.

In addition, the rotation means 5 is provided with a c-shaped frame 24 fixed to one side of the pivot member 23 of the Y-axis inclination means 4, one side of the frame 24 by hydraulic pressure A plurality of stretchable cylinders (four in the present invention) 25 are fixedly installed, and a bracket 26 is fixedly connected to the front end of the cylinder 25, and V on one side of the bracket 26 along the circumference. The rollers 28 having the grooves 27 formed therein are connected to each other, and the driving roller 28a of the rollers 28 is provided with a pulley 29 so that the motor 30 is fixed to one side of the frame 24. Is connected via a pulley 31 and a belt (32).

The following describes the effects of the present invention configured as described above.

First, the cylinder 25 installed in the frame 24 of the rotating means 2 is contracted to widen the interval between the rollers 28, 28a provided at the tip of the cylinder 6, and then the rollers 28, 28a. By inserting the deflection yoke 1 therebetween and then actuating the cylinder 25 at the same time, the annular projection 1a of the deflection yoke 1 causes the V-shaped groove 27 of the rollers 28 and 28a. To fit into the

Next, the CRT supported by the support means (not shown) is inserted into the deflection yoke 1 supported by the rollers 28 and 28a, and then the electron gun E of the CRT is operated. In this case, the electron beam emitted from the electron gun E is deflected by the magnetic force of the deflection yoke 1 and is irradiated to the phosphor of the fluorescent surface to form a predetermined image. The deflection with respect to the C tube B In order to first move the motor 11 of the horizontal moving means 2 in order to set the relative position of the yoke 1, the gear shaft 10 connected to the motor 11 is moved forward and reverse. And the moving member 13 fitted to the gear shaft 10 moves forward and backward along the gear shaft 10 so that the deflection yoke 1 moves back and forth in the neck portion N of the CRT. In this case, the quality of the image made by the electron beam emitted from the electron gun E is relatively good. When the motor 11 is stopped, the horizontal position of the deflection yoke 1 is primarily determined.

Next, when the position of the deflection yoke 1 in the horizontal direction is determined as described above, the deflection yoke 1 is rotated by the motor 30 to drive the driving roller 28a which fixed the deflection yoke 1. (1) should be slowly rotated around the neck portion (N) of the braun tube (B), even when the quality of the image appears best on the fluorescent surface by the electron beam emitted from the electron gun (E) as above. By stopping the operation of the motor 30, the position of the deflection yoke 1 is set to secondary.

At this time, the roller (28,28a) for rotating the deflection yoke (1) is formed with a V-shaped groove 27 along the circumference and by holding the annular projection (1a) of the deflection yoke (1) The oak (1) is to ensure that during the rotation does not leave the roller (28,28a).

Next, after determining the position of the deflection yoke 1 through the first and second steps as described above, the inclination angle of the deflection yoke 1 should be adjusted. First, the motor of the X-axis inclination means 3 ( When the gear shaft 15 is rotated forward / reverse by driving 14), the fan gear 17 geared to the gear shaft 15 rotates to the left and right about the rotation shaft 17a. Fixed deflection fixed to the frame 24 by inclining the frame 24 of the rotating means 5 along the X axis via the support plate 18 and the Y axis inclined means 4 fixedly connected to the upper end of 17a). While the yoke 1 is tilted and moved, the Y-axis tilting means 4 having the same configuration as that of the X-axis tilting means 3 drives the motor 19 forward and reverse to drive the gear shaft 20. When rotated forward and reverse, the fan gear 22 geared to the gear shaft 20 is rotated left and right about the rotation shaft 22a, The frame 24 of the rotating means 5 moves over time along the Y axis via the rotating member 23 fixedly connected to one side of the fan-shaped gear 22 to change the inclination angle of the Y axis in the deflection yoke 1. do.

Therefore, the deflection yoke by turning on and off the motors 14 and 19 of the X and Y axis inclination means 3 and 4 while watching the image formed on the screen by the electrons emitted from the electron gun E as described above. It is possible to determine the inclination angle of X and Y axes in (1).

On the other hand, in the description of the operation of the present invention, the deflection yoke 1 is operated in the order of movement, rotation and inclination in the horizontal direction first, but the operation order may be interchanged or may be operated in combination at the same time. It is.

In the present invention described above, the rollers 28 and 28a of the rotating means 5 for rotating the deflection yoke 1 are respectively installed in the cylinder 25, and the deflection yoke 1 is X, X and Y-axis inclination means (3,4) to give the inclination angle to the Y-axis is composed of the gear shaft (15,20) and fan gear (17,22) driven by the motor (14,19), the deflection In the horizontal moving means 2 for moving the yoke 1 in the horizontal direction, the gear shaft 10 which is also rotated by the motor 11 and the gear shaft 10 and the gear shaft 10 are fitted. The moving member 13 is equipped, and finely adjusts the fine movement of the deflection yoke 1 in the horizontal direction and the rotational direction with respect to the C tube B, and determines the optimum position of the deflection yoke. By fine-adjusting the inclination angle of X and Y axes in (1), it is possible to accurately mount the deflection yoke, thereby improving the image quality.

Claims (3)

The gear shaft (10), which is installed on the bed (7) and the bed (7) on the horizontal moving means (2) and rotated by the motor (11), is fitted to the gear shaft (10) and the gear shaft (10) is fitted. A moving member 13 and a moving panel 9 integrated with the moving member 13 are provided, and the X-axis inclination means installed on the moving panel 9 of the horizontal moving means 2 ( 3) is provided with a gear shaft 15 rotated by a motor 14 and a fan gear 17 geared to the gear shaft 15, the Y-axis installed on the X-axis inclination means (2) The inclined means 4 has a gear shaft 20 rotated by a motor 19, a fan gear 22 geared to the gear shaft 20, and a rotating member fixedly connected to one side of the fan gear 22. 23 is provided, the rotating means (5) provided on the Y-axis inclination means (4) and the c-shaped frame 24 directly fixed to the rotating member (23) and attached to the frame 24 at the tip Rollers (28, 28a) Deflection yoke position adjustment device is provided with a motor (30) for rotating the cylinder 25 and one drive roller (28a) provided. 2. A deflection yoke position adjusting device according to claim 1, characterized in that a V-shaped groove (27) is formed along the circumference of the rollers (28,28a) of the rotating means (5). 2. The rail (6) according to claim 1, wherein rails (6) are provided at both sides of the bed (7) of the horizontal moving means (2) along a length thereof, and below the movable panel (9). Deflection yoke position adjustment device, characterized in that the door (8) is installed to move along.