JPS6062039A - Reinforced type cathode-ray tube - Google Patents

Abstract

PURPOSE:To easily suppress the inclination and central deviation of the screen section of a cathode-ray tube to an error of less than 1mm. by providing a minimum of two plate-type protrusions in the lug mounting section of a reinforcement member with the width interval of the lug, inserting the lug between the protrusions, and fixing the lug to the protrusions. CONSTITUTION:A minimum of two plate-type protrusions 5a and 5a are formed in the lug mounting section of a reinforcement member 5 with the width interval of a lug 6 by raised cutting. Side walls 6a and 6b are provided in the section corresponding to the protrusions 5a and 5a in the lug 6. In addition, the reinforcement member 5 is premounted on a cathode-ray tube 3. The lug 6 is inserted between the projections 5a and 5a of the reinforcement member 5 and is positioned at an accuracy of less than + or -0.2omega based on the screen section of the CRT3. Then the projection 5a is welded on the side wall 6a with laser 7. As a result, when the lug 6 is fixed to a television chassis, the inclination of the screen section of the CRT3 and the central deviation of the CRT3 can easily be suppressed to an error of less than 1mm..

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a reinforced cathode ray tube in which a reinforcing member is wound around a panel portion of the cathode ray tube, and particularly to a lug fixing structure.

[Background of the invention]

There are two ways to fix the lugs in a reinforced cathode ray tube: as shown in FIG. There is a method of fixing the lug 1 by sandwiching the lug 1 between the cathode ray tube 3 and the reinforcing plate 4 and applying tension to the reinforcing plate 4 as shown in FIG.

However, these methods tend to cause displacement of the lug 1 due to external force due to heating or tightening force.
When fixed to a television chassis, it is difficult to suppress the inclination of the screen portion of the cathode ray tube and the deviation of the center of the cathode ray tube to an error of 1 m or less.

[Purpose of the invention]

An object of the present invention is to provide a reinforced cathode ray tube whose lugs can be fixed with high precision.

[Summary of the invention]

The present invention is characterized in that at least two plate-shaped protrusions are provided at the lug attachment portion of the reinforcing member with a width interval between the lugs, the lugs are inserted between the protrusions, and the lugs are fixed to the protrusions.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described from FIG. 3 and the fourth boat. At least two plate-shaped protrusions 5a, 5a are formed at the lug attachment portion of the reinforcing member 5 with a width interval of the lug 6 by cutting and raising. The lug 6 has the protrusions 5a, 5
Side walls 6a, 6a are provided at portions corresponding to a.

Here, between the protrusions 5a, 5a is a side wall 6a of the lug 6.
, is formed approximately 0.3 mm larger than between 6a,
There is plenty of room for adjustment.

Therefore, the reinforcing member 5 is attached to the cathode ray tube 3ζ in advance, and the lug 6 is inserted between the protrusions 5a of the reinforcing member 5 with the screen portion of the cathode ray tube 3 as a reference.
Position with accuracy within 2m.

Thereafter, a laser 7 is used to weld the protrusion 5a to the side wall 6a.

In this way, the protrusion 5a into which the lug 6 is inserted into the reinforcing member 5
, 5a are provided, and the lug 6 is fixed to this protrusion 5a.
The positioning accuracy of the lug 6 is improved.

Therefore, when the lug 6 is fixed to the television chassis, the inclination of the screen portion of the cathode ray tube 3 and the center deviation of the cathode ray tube 3 can be easily suppressed to an error of 1+Mn or less.

Next, a lug assembly apparatus and method for fixing the lug 6 to the reinforcing member 5 will be explained with reference to FIGS. 5 to 7. Frame 10
, a screen positioning pin 11 for positioning the screen portion of the cathode ray tube 3, an X direction fixed positioning pin 12 for positioning the cathode ray tube 3 in the X direction, and a Y direction fixed positioning pin 13 for similarly positioning the cathode ray tube 3 in the Y direction. , an X-direction movable positioning roller 14 that is movably provided to press the cathode ray tube 3 against the X-direction fixed positioning pin 12; A Y-direction movable positioning roller 15 is provided. Further, above the pedestal 10, a ζ suction head 16 is arranged to be movable up and down in order to attach and detach the cathode ray tube 3 onto and from the screen positioning bin 11. The suction head 16 is urged downward by a spring 17, and applies a downward preload to the cathode ray tube 3, thereby preventing the cathode ray tube 3 from floating during positioning.

Furthermore, a lug slide 20 is fixed to the pedestal lO6. The lug slide 20 has a guide shaft 21 extending along a diagonal line passing through the center of the screen portion of the cathode ray tube 3 with reference to the fixed positioning pins 12 and 13 in the X and Y directions, and the lug clamp stand 22 can slide on this guide l11121. is supported by. The forward end of the lug clamp base 22 is fixed by a collar 23 fitted into the feed shaft 21.The lug clamp base 22 also has a mounting hole 6b (the third one) of the lug 6. A rough positioning pin 24 inserted into the lug (see figure) and a lug presser 25 for holding and clamping the lug 6 are provided.

Next, the effect will be explained. A number crimping reinforcing member 5 is attached to the cathode ray tube 3. Also, the lug positioning pin 24ζ of the lug clamp base 22 and the mounting hole 6b of the lug 6.
, and clamp the lug 6 with the lug presser 25. Thereupon, the cathode ray tube 3ζ is suction-held by the suction head 16 and transferred above the screen positioning pin 11, and is placed on the screen positioning pin 11 by the lower part of the suction throat 16 with a downward preload applied by the spring 17. Ru. Next, the X- and Y-direction movable positioning rollers 14.15 move to press and position the cathode ray tube 3 against the X- and Y-direction fixed positioning pins 12.13. After positioning, the spring 17ζ applies further pressure to firmly hold the cathode ray tube 3.

Then, the lug clamp stand 22 is advanced along the guide rod 21 and brought into contact with the collar 23. This results in lag 6
is inserted between the protrusions 5a and 58 of the reinforcing portion 5, as shown by the two-dot chain 1 gland in FIG. 3, and positioned at a prescribed position relative to the reinforcing member 5. After that, in V-the 7, reinforcement department month 5
The protrusion 5a is welded to the side wall 6a of the lug 6.

[Effects of the Invention] According to the present invention, at least two plate-like protrusions are provided at the lug attachment portion of the reinforcing portion with a lug width interval, the lugs are inserted between the protrusions, and the lugs are fixed to the protrusions. Therefore, the lug positioning degree N'+'J is improved, and the nodding and center deviation of the screen portion of the cathode ray tube can be easily suppressed to an error of 1 mm or less.

[Brief explanation of drawings]

1 and 2 are perspective views of a conventional reinforced cathode ray tube, FIG. 3 is a perspective view showing an embodiment of a reinforced cathode ray tube according to the present invention, and 41y1 is an enlarged perspective view of the main part of FIG. FIG. 5 is a plan view showing one embodiment of the lug assembly device, and FIG.
FIG. 7 is an enlarged cross-sectional view of the main part of FIG. 6.0 3... Braun tube, 5... Reinforcing member, 5a...
Protrusion, 6...lug. Figure 1 Figure 3 Figure 2 Figure 4

Claims (1)

[Claims] In a reinforced cathode ray tube in which a reinforcing member is wound around the panel of the cathode ray tube and lugs are fixed to this reinforcing member,
A reinforced cathode ray tube, wherein at least two plate-shaped protrusions are provided at a lug attachment portion of the reinforcing member with a width interval between the lugs, the lugs are inserted between the protrusions, and the lugs are fixed to the protrusions.