KR200159064Y1 - Wedge for deflection yoke of cathode ray tube - Google Patents

Abstract

Fixing wedge interposed between bulb and deflection yoke of cathode ray tube during ITC operation to fix deflection yoke, in order to solve the problem caused by affecting the already adjusted convergence state due to vibration during fixing operation, The fixing wedge which is inserted into the outer surface of the cathode ray tube funnel portion and the screen flange of the deflection yoke to support the deflection yoke, is attached to the outer peripheral surface of the funnel portion and tilts the deflection yoke to adjust the convergence. The wedge for fixing the deflection yoke of the cathode ray tube including an adjusting means is provided to achieve precise convergence to further double the characteristics of the cathode ray tube screen to improve the quality of the product and facilitate the workability to improve workability and It relates to a deflection yoke fixing wedge of a cathode ray tube capable of improving productivity.

Description

Deflection yoke fixing wedge of cathode ray tube

1 is a perspective view showing a fixing wedge according to the present invention.

2 is a cross-sectional view showing an operating state of the present invention.

3 is a side cross-sectional view showing a state where a conventional deflection yoke is mounted on a cathode ray tube.

4 is a perspective view showing a conventional fixing wedge.

Explanation of symbols for main parts of the drawings

10: bottom mounting portion 11: tapered portion

11a: recessed groove 12: protrusion

12a: bolt insertion hole 12b: hole

13: Adjustment bolt

[Detailed Description of Design]

[Industrial use]

The present invention relates to a deflection yoke fixing wedge of a cathode ray tube, and more particularly, by providing an adjustment means on a fixing wedge so as to adjust the convergence in a state of being fixed to the cathode ray tube first, a precise convergence is achieved. The deflection yoke fixing wedge of the cathode ray tube that can improve the quality of the.

[Prior art]

In general, a color cathode ray tube is connected to a panel having three colors R, G, and B phosphors coated on its inner surface, a funnel fitted with an anode button for sealing the panel opening and applying a high pressure to the rear surface of the funnel; It is formed by the neck portion in which the electron gun is installed to the inside to form an appearance.

Inside the panel, a shadow mask is provided which allocates three lines of electron beams scanned from the electron gun to the respective phosphors. An inner shield which prevents the electron beams from being distorted by the geomagnetic field inside the funnel. Is installed.

The negative electrode installed together with the electron gun emits electrons according to the heat generated by the heater to which the electron-emitting material is coated.

In addition, a deflection in which the horizontal deflection coil is disposed inside the color cathode ray tube, which is generally combined with a pair of separators having a half-trumpet shape, is disposed inside thereof, and a vertical deflection coil wound around the ferrite core is disposed outside the color cathode ray tube. A yoke (deflection Yoke, DY) is to be mounted on the neck portion.

The deflection yoke generates a deflection magnetic field by applying horizontal and vertical sawtooth wave currents to deflect the electron beam scanned from the electron gun up and down and left and right to draw a raster on the screen.

On the other hand, since the position of the deflection yoke fixed during ITC (Intergral Tube Components) operation determines the deflection center point, it is important to fix the deflection yoke to the outer circumferential surface of the cathode ray tube to accurately position it.

Therefore, the fixing of the deflection yoke is performed by the electron beam scanned from the electron gun when the ITC operation, that is, the purity, the vertical screen moving distance, and the convergence adjustment, accurately lands on the corresponding phosphor of the fluorescent surface. If the center axis of the color cathode ray tube and the center axis of the deflection yoke coincide with each other to adjust the position of the deflection yoke to form a high quality pixel, the deflection yoke is firmly fixed on the color cathode ray tube so that the deflection yoke does not move. do.

In this case, a predetermined gap is formed between the inner surface of the deflection yoke and the bulb of the cathode ray tube, and separate fixing means is used between the gaps to fix the deflection yoke.

4 is a diagram schematically showing a state where a conventional deflection yoke is mounted on a color cathode ray tube.

As shown, the separator 50 of the deflection yoke D, which is inserted around the neck portion N of the color cathode ray tube, is connected to the separator 50 by a band-shaped clamp 51 and a fastening bolt (not shown). The flange 52 is fastened, and the flange 53 of the funnel portion P side of the cathode ray tube is fixed by inserting a fixing wedge 54 and applying the adhesive.

5 is a view showing a known shape of the fixing wedge 54, as shown in the fixing wedge 54 is the inside of the flange portion 53 of the cathode ray tube funnel portion (P) side and the The taper portion 54a fitted between the outer circumferential surface of the funnel portion P and the adhesive fixing portion 54b positioned at the rear side thereof and attached to the outer circumferential surface of the funnel portion P are formed.

Problems that the design tries to solve

As described above, the wedge operation using the fixing wedge 53 evenly adjusts the landing adjustment to match each electron beam to the phosphor of the fluorescent surface, and the three electron beams generated by the electron gun are located at one point. The operator manually moves the deflection yoke D manually or, if the fixing bolt is attached to the deflection yoke, rotates the fixing bolt using a drive or a predetermined drive motor to collect the deflection yoke. By performing the movement of (D), the convergence is adjusted to determine the fixed position of the deflection yoke (D).

By the way, the problem that occurs in the fixing portion when the fixing wedge 54 is inserted, the tapered portion 54a of the fixing wedge 54 is formed in a plane and a portion of the flange portion 53 abutting the predetermined It is formed with a curvature, such a structure stably supports the deflection yoke (D), but when the fixing wedge (54) is fixed to the fixing part due to the difference in curvature, accompanied by vibration and shaking, the cathode ray The central axis of the tube and the central axis of the deflection yoke (D) are inconsistent and fixed so that accurate convergence can not be achieved.

As a result, mis-landing occurs, thereby deteriorating the screen characteristics of the peripheral portion of the fluorescent film, followed by a problem that the workability is degraded due to mounting.

In order to solve this problem, Korean Utility Model Registration Application No. 90-19630 describes a deflection yoke fixing wedge of a cathode ray tube having an inlet groove formed at a predetermined depth in the bottom surface of a tapered portion.

In addition, Japanese Utility Model Registration Application No. 60-150762 discloses a fixing wedge for a rubber elastic material body provided with a tapered portion and a bottom portion formed at an acute angle, and at least a recessed groove formed in the tapered portion. 63-179641 consists of a wedge-shaped portion inserted into an outer circumferential surface of a cathode ray tube and an inner circumferential surface of a deflection yoke and having a space portion therein, and a resin injection pipe integrally formed in communication with the space portion in the wedge-shaped portion. The wedge is further described by the pressure of the resin injected into the space portion through the fixing wedge which can be inserted at a slight inclination relative to the tube axis of the cathode ray tube.

The fixing wedge by the above technique is modified to change its shape so that the taper portion can be elastically deformed to an external force, but these are also fixed conveyors to fix the wedge after adjusting the convergence. As it contains the possibility of affecting the ences, it is insufficient to fundamentally solve the problem.

Therefore, the present invention was devised to solve the problem of the deflection yoke fixing wedge of the conventional cathode ray tube. Thus, the yoke of the deflection yoke is attached to the cathode ray tube during the ITC operation to fix the convergence by converging the yoke. By providing an adjustment means that can be adjusted, this adjustment means makes precise convergence work, improves the screen characteristics of cathode ray tube, improves product quality, and provides wedges for fixing the deflection yoke of cathode ray tube, which can facilitate the operation. Its purpose is to.

Means to solve the problem

In order to achieve the above object, the present invention is a fixing wedge for inserting a plurality of the cathode yoke funnel portion outer peripheral surface and the inner surface of the screen flange flange of the deflection yoke in the fixing wedge to support the deflection yoke in operation It is attached to the outer peripheral surface of the funnel portion provides a wedge for fixing the deflection yoke of the cathode ray tube, characterized in that it comprises a control means for adjusting the convergence by tilting the deflection yoke.

At this time, the adjustment means is provided with a free end at the end of the bottom mounting portion attached to the outer peripheral surface of the funnel portion and a tapered portion that can be moved elastically; A protrusion formed at a predetermined position on an upper end of the bottom mounting part; It is characterized by consisting of the adjustment bolt is inserted through the protrusion portion in close contact with the bottom surface of the tapered portion.

In addition, an inlet groove formed in a longitudinal direction for injecting an adhesive into the upper surface of the tapered tooth portion so as to reinforce the fixing force of the adjustment means after the adjustment of the convergence, and a hole formed vertically through the center of the protrusion portion Characterized in that it is prepared.

Action

As described above, the deflection yoke fixing wedge of the present invention, unlike conventional wedges, was fixed after adjusting the convergence during the ITC operation, is first fixed to the cathode ray tube and then the deflection yoke is moved by the adjustment means. Will be adjusted.

That is, the fixing wedge of the present invention is inserted into the outer peripheral surface of the funnel of the cathode ray tube and the inner peripheral surface of the deflection yoke as usual, and the bottom attachment portion is fixed by an adhesive or the like.

At this time, the state of the cathode ray tube is a state in which the adjustment of the convergence is not performed by using the adjusting means, which rotates the adjusting bolt back and forth, thereby tilting the deflection yoke by the movement of the tapered portion linked thereto. it is done by being tilted. After that, the adhesive is injected into the inlet and the hole to enhance the fixing force of the adjusting means which is finished and fixed as described above.

As such, the present invention achieves precise convergence because the convergence can be adjusted in a state where the bottom fixing part is stably fixed first.

Example

Hereinafter, with reference to the accompanying drawings to help understand the present invention, a preferred embodiment of the wedge for fixing the deflection yoke of the cathode ray tube of the present invention will be described.

1 is a perspective view showing the fixing wedge according to the present invention, the wedge 1 of the present invention, similar to the usual wedge, the bottom attachment portion 10 and the bottom attachment portion (attached and fixed to the bulb of the cathode ray tube) It is made of a tapered portion (11) extending from the 10 and inserted between the bulb and the deflection yoke.

The tapered portion 11, as can be seen through the drawing is made of a free end extending from the end of the bottom mounting portion 10 is provided to be able to move elastically.

On the other hand, the fixing wedge (1) is provided with an adjusting means for adjusting the convergence by tilting the deflection yoke, the adjusting means includes the tapered portion 11 and the bottom mounting portion ( 10) the projection 12 is formed at a predetermined position on the upper surface of the upper surface and has a bolt insertion hole 12a provided at the center thereof, and an adjustment bolt 13 penetrating and inserted into the bolt insertion hole 12a so as to be able to move forward and backward. do.

In addition, a lengthwise inlet groove 11a is formed in the upper end surface of the tapered part 11, and a hole part vertically penetrated through the center part of the upper end surface of the protrusion part 12 to communicate with the bolt insertion hole 12a. A bar 12b is provided, and then the adhesive is injected into the inlet groove 11a and the hole 12b after the adjustment means finishes the convergence adjustment.

The action of the fixing wedge 1 of the present invention made as described above is made as follows.

FIG. 2 is a cross-sectional view for explaining this, and as shown, the fixing wedge 1 is inserted into a plurality between the inside of the screen flange 2 of the deflection yoke and the outer peripheral surface of the funnel portion 3 of the cathode ray tube.

At this time, the insertion of the fixing wedge (1) is made before the convergence adjustment in the ITC operation, unlike the prior art.

The inserted fixing wedge 1 is first fixed to the bottom mounting portion 10 is attached, and then to achieve the convergence adjustment by using the above adjustment means.

Here, the fixing of the bottom attachment part 10 is performed before the convergence adjustment as described above in the present embodiment, but on the other hand, it is also possible to fix the attachment during the adjustment.

On the other hand, in the adjustment of the convergence, the deflection yoke is tilted when the adjustment bolt 13 is rotated back and forth in a state in close contact with the bottom surface of the tapered portion 11, as shown in the figure When the adjusting bolt 13 is advanced in the direction of the arrow, the adjusting bolt 13 pushes the tapered portion 1 so that the screen flange 2 is also interlocked to change the position to the position shown by the dashed line. .

Since this operation can occur in the plurality of fixing wedges (1), it is possible to tilt the deflection yoke by mutually adjusting it while moving the adjusting bolt 13 forward or backward.

Thus, the deflection yoke can be tilted by the fixing wedge 1 to achieve an effective convergence, and the convergence adjusted as described above because the fixing wedge 1 has already been fixed. The state is kept stable.

On the other hand, the rotation drive means of the adjustment bolt 13, although not shown in the drawing is to use a drive or a predetermined drive as usual.

In addition, after completing the adjustment of the convergence, when the adhesive is injected into each of the recess 11a and the hole 12b, the accuracy of the adjustment means is deepened, thereby strengthening the fixing force, thereby increasing the depth of the deflection yoke. Will be supported.

Effect of design

As described above, the wedge for fixing the deflection yoke of the cathode ray tube according to the present invention is provided with an adjustment means for adjusting the convergence by tilting the deflection yoke in an already fixed state, thereby providing a convergence during ITC operation. At the same time, the deflection yoke can be fixed automatically.

Accordingly, the present invention can further improve the quality of the product by doubling the characteristics of the cathode ray tube screen due to precise convergence operation.

In addition, when working with the ITC, effective wedge work can be performed, and the convenience of workability is promoted, which has the advantage of improving workability and productivity.

Claims (2)

A bottom attachment portion 10; A tapered portion 11 extending freely from the end of the bottom attachment portion 10; A projection part 12 formed by being protruded from the bottom attachment part 10; A deflection yoke fixing wedge of a cathode ray tube including an adjustment bolt 13 coupled to the protrusion 10 by screwing. The deflection yoke of a cathode ray tube according to claim 1, wherein an inlet groove (11a) is formed in the upper surface of the tapered portion (11), and a hole (12b) penetrates perpendicularly to the center of the protrusion (12). Fixing wedges.