KR920007334Y1 - Electronic beam control device - Google Patents

Abstract

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Description

Electronic Beam Adjuster

1 is a perspective view of a conventional laser beam adjusting device.

2 is a perspective view showing one example of the electronic beam adjusting apparatus of the present invention.

Figure 3 is a part development view of the present invention embodiment.

4 is an enlarged cross-sectional view of an essential part showing an adjustable state in which gaps are provided between magnets by engaging pieces.

5 is an enlarged cross-sectional view of the main portion showing a state in which the engaging piece is separated and the magnet is tacked.

6 is a partially enlarged perspective view near the spring piece.

* Explanation of symbols for main parts of the drawings

1: Cylindrical holder 2a, 2b, 2c, 2d, 2e, 2f: Ring-shaped magnet

4,5: flexible engagement piece 6: spring piece

7: fixing ring 9: fastening band

13: inclined surface 15: neck portion

The present invention relates to an improvement of an electron beam adjusting device fitted to the CRT neck portion of a television receiver.

In general, the electron beam adjusting device is composed of six magnets including two ring magnets magnetized in two poles, two ring magnets magnetized in four poles, and two ring magnets magnetized in six poles. In the CRT of a color television receiver, purity adjustment and static converqence adjustment are performed.

Conventionally, as an adjusting device of such a structure, in order to prevent the magnets of adjacent poles from interfering with each other's rotational forces and interlocking with each other between magnets of each pair of poles, the positive magnetic plates and the pure magnetic plates are joined together. In order to fix the rotation of the magnet after forming two or more protrusions on the surface, insulating ring shape fitted with the groove of the cylindrical holder, or an insulating ring made of hard film, site, etc. (I) by pressing and fixing the ring-shaped box and the insulating ring by engaging and fastening the screw installed in the holder by a fixing ring provided with a screw wire. lock type) (Japanese Patent Application No. 50-76728), or a protrusion formed in the inner diameter to prevent rotation together with the electric, and in the thickness direction, a ring-shaped ruler with elasticity Spring pieces, which pour torque on the stones, and insulated rings formed with an integrally formed holder with a protrusion to create a gap between the magnets, generally referred to as a non-lock type (Japanese thread) 51-56920).

By the way, the former devised the proper rotational torque of the magnet during adjustment and the fixing force of the magnet after the adjustment, which can be properly adjusted according to the fastening degree of the fixing ring, but at least three insulation rings are needed, so the number of parts There are many defects such as high productivity and low productivity due to complicated assembly.

On the other hand, the latter devises a relatively low rotational torque of the magnet so that beam correction is easy. Therefore, after the beam correction, it must be fixed by applying an adhesive or paint, which takes time to apply. In addition, there are drawbacks such as the use of harmful organic solvents and the time required for drying.

That is, in the conventional conventional electron beam adjusting device, as shown in FIG. 1, the ring-shaped box B is rotatably mounted on the outer circumference of the cylindrical holder A, and the ring of each jaw is rotated. The spacers (C) and (C) are inserted between the shape magnets (B) and (B).

The present invention relates to a lock type for fixing a magnet after adjustment by a mechanical method without using a paint or the like, unlike a so-called electron beam adjusting device called a type although the magnet fixing after adjustment is performed with paint or the like. This is an improvement of the method previously provided by the inventors (Japanese National Office 58-176263).

That is, the present invention is an electron beam adjusting device in which a plurality of ring boxes are installed on the outer circumference of a cylindrical holder made of a synthetic resin that is inserted into and fixed to a CRT neck portion, wherein the holder is provided between the ring boxes. The above-mentioned wedge-shaped projection of the tip portion of the neck portion is inserted to form a substantial gap between the magnets, and also by pressing and pushing the ring-shaped box, the above-mentioned projection preventing the magnet from rotating between the magnets is prevented. And a plurality of flexible engagement pieces having different thicknesses, each having a wedge-shaped projection having a rotational torque imparting function.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

2 and 3, reference numeral 1 is a cylindrical holder formed integrally by synthetic resin and fitted to the CRT neck portion of a television receiver, the holder 1 being a ring-shaped box 2a (2b). (2c)... Hook portion (3) for fixing the wedge and the wedge-shaped cross section is sandwiched between the dipole magnet (2b) and the quadrupole magnet (2c), the gap between the two pole and four pole magnets (2b) (2c) And 4 pole magnets (2d) and 6 poles in the same manner as the flexible engagement piece (4) having a different thickness from the outer circumferential joining portion of the cylindrical holder having a wedge-shaped protrusion for providing a suitable torque to these magnets. A flexible engagement piece 5 having a uniform thickness that provides a gap and torque between the magnets of the magnet 2e, a spring piece 6 for press-fitting the magnet with elasticity in the axial direction, and a split piece ( 10), the fixing ring (7) is fixed to the divided pieces (2), and the fixing device of the present invention is fixed by screw 8 to the neck portion of the CRT (not shown). The anti-rotation protrusion 12 for fitting with the hole 11 installed in the fastening band 9 for protruding is provided.

The fixing ring 7 is a sloping inclined surface of one side for pressing the projection of the spring piece 6 in the axial direction by using the back pressure of the fastening band 9 by rotation, 13) and a projection 14 is provided on the outside for the rotation operation.

The ring-shaped magnets (2a) and (b) described above are two-pole magnets provided with a handle for rotational operation on the outer circumference, and the ring-shaped box (2c) (2d) according to the following is similarly a four-pole with a handle on the outer circumference. It is a magnet.

In addition, another ring-shaped box 2e (2f) is also a six-pole magnet provided with a handle on the outer periphery.

Reference numeral 15 is a CRT neck portion.

4 shows a state in which the engagement piece 4, 5, which has a wedge-shaped protrusion at the tip and which has different thicknesses, is sandwiched between the magnets from the inner diameter side of the magnet to form a gap between the magnets, thereby adjusting the adjustable state. It is a partially enlarged sectional drawing.

5, the spring piece 6 pushes the magnet side surface by the action of the inclined surface 13 by rotating the fixing ring 7 in the adjustable state of FIG. 4, and the engagement piece 4 (5). ) Is a partially enlarged sectional view showing a state in which six magnets are pressed and fixed.

In the present invention, since the magnet engaging pieces 4 and 5 of each pole are sandwiched between the pole magnets, the two magnets are separated without interfering rotational forces, so that the magnets rotate together. Is prevented.

In addition, since the engaging pieces 4 and 5 hold the inner diameter edge of the magnet with appropriate elasticity by appropriately determining the thickness and width, appropriate rotational torque is given to the magnet, thereby providing each magnet 2a. … The handle of (2f) can be rotated to perform beam correction reliably.

In addition, when the fixing ring 7 is rotated, it does not retreat by the fastening band 9, so that the spring piece 6 of the holder can be pressed against the inclined surface on the cylindrical holder side, so that the magnets can be press-fitted together. have.

In addition, by appropriately rounding or chamfering the corners of the inner diameter portion of the magnets in contact with the engagement pieces 4 and 5, the engagement pieces 4 and 5 between the magnets are facilitated and automatically inserted. Therefore, a gap can be provided between the magnets, and when the magnet is pressed and fixed, the engagement piece can be easily detached and the magnets can be easily incorporated.

In this way, the separation of the magnet and the provision of a suitable rotational torque are performed by the same engagement piece, and a part of the role is also performed by the same engagement piece for the fixing operation, and the fixing operation of the magnet is performed by using a fastening band. It is a feature of the present invention, and since it is a new type of lock type that can minimize the number of parts to be used and pushes the magnets together and reliably, it is possible to reduce the cost and to be rich in productivity. In practice, the practical value is extremely large.

Claims (2)

Electron provided with a plurality of ring-shaped boxes 2a, 2b, 2c, 2d, 2e and 2f on the outer circumference of the cylindrical holder 1 of the synthetic resin body fixed to the CRT neck 15. In the beam adjusting device, the electron beam adjusting device comprises a cylindrical holder 12, a fixing ring 7, and a fastening band 9, and the aforementioned cylindrical holder 11 holds the inclined protrusion. Flexible engagement pieces having different thicknesses for sandwiching the spring pieces 6, the hook portions 3 for fixing the ring-shaped box, and the magnets from the inner diameter side of the aforementioned CRT neck portion to form a substantial gap between the magnets ( 4) (5) is retained, and the above-mentioned fixing ring (7) uses the back pressure of the fastening band (9) by the rotation to press the projection of the spring piece (6) in the axial direction to press the ring box box. In addition to holding the inclined surface 13 for, and also has a projection (14) for rotational operation, the holder 1 and the fastening band (9) Electronic beam adjusting device, characterized in that arranged between. A ring or chamfer according to claim 1, characterized in that a rounding or chamfer is performed to facilitate the fitting and detachment between the magnets of the engagement piece at the corner of the inner diameter where the ring-shaped flexible engagement piece (4) (5) is fitted. Electric beam apparatus.