JPS5837658B2 - How to reinforce cathode ray tubes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reinforcing method for manufacturing an explosion-proof cathode ray tube.

Generally, in order to reinforce a cathode ray tube using a reinforcing metal fitting and a steel band, the reinforcing metal fitting is attached to a side wall of a cathode ray tube panel, and a steel band is wrapped around the side of the reinforcing metal fitting.

The reinforcing metal fitting is usually formed in a U-shape, and lugs for attaching and fixing the cathode ray tube to the television set are fixed to the corners of the reinforcing metal fitting by welding or the like.

Conventionally, when attaching reinforcing metal fittings to the side wall of a cathode ray tube panel, the lugs were held to position and adhere the reinforcing metal fittings. Since it is attached only to the lug section, it is unbalanced, and it is difficult to keep the end face of the reinforcing metal fitting parallel to the panel surface by holding only the lug section.

Furthermore, since the panel of the cathode ray tube has a spherical shape, sufficient accuracy cannot be obtained in positioning the reinforcing metal fittings in the axial direction of the cathode ray tube.

Therefore, reinforcing the cathode ray tube using the conventional method of attaching reinforcing metal fittings lacks reliability in terms of reinforcing effect on the cathode ray tube, and also poses problems in aesthetic appearance.

Therefore, the present invention has been made in view of the above points, and an object of the present invention is to provide a method for reinforcing a cathode ray tube that is highly reliable and allows reinforcing metal fittings to be attached to the side wall of a cathode ray tube panel with high accuracy.

Hereinafter, the present invention will be explained with reference to illustrated embodiments.

As shown in FIG. 1, a positioning reference hole 3 with a diameter of about 5 to 8 mm is provided on the side surface of a U-shaped reinforcing metal fitting 2 to which a TV set mounting lug 1 is fixed by welding or the like to a corner portion.

FIG. 2 shows the apparatus used in the method of the invention.

As shown in the figure, on the outer periphery of the panel of the positioned cathode ray tube 4, there is a lug holding mechanism 6 that holds the lugs 1 on the base 5 in order to position the two reinforcing metal fittings 2 on the outer periphery of the panel. A guide pin holding cylinder 8 having a guide pin T that engages with the reference hole 3 is provided.

Then, the base 5 slides by a means not shown to bring the reinforcing metal fitting 2 into close contact with the panel portion of the cathode ray tube 4.

Next, a method for reinforcing a cathode ray tube using such a device will be explained.

First, the cathode ray tube 4 is positioned by means not shown, the two reinforcing metal fittings 2 are placed facing each other and supplied to the panel portion of the cathode ray tube 4, and the lug 1 is supported by the lug holding mechanism 6.

Next, the guide pin holding cylinder 8 operates to press the guide pin 7.
engages with the reference hole 3 of the reinforcing metal fitting 2 to position the reinforcing metal fitting 2.

When the guide Zen 7 engages with the reference hole 3 in this way, a signal is output from the reinforcing plate position detection lead wire 9, which causes the base 5 to move forward and press the lower end of the reinforcing metal fitting 2, thereby moving the reinforcing metal fitting 2 onto the cathode ray tube 4. Closely attach it to the panel.

Thereafter, a steel band (not shown) is wound around the outer periphery of the reinforcing metal fitting 2 with strong force, and both ends of the steel band are fixed by means such as welding or caulking.

This completes the reinforcement of the cathode ray tube.

As is clear from the above description, according to the method for reinforcing a cathode ray tube according to the present invention, the reinforcing metal fittings are supported by the lug portions for mounting on the television set, and are precisely placed on the reinforcing metal fittings by pressing or the like. Positioning and adhesion to the side wall of the cathode ray tube panel are performed by engaging guide pins in the positioning reference holes provided, so that the reinforcing metal fittings are held in a well-balanced manner despite the U-shape, and the panel is Since the reinforcing metal fittings can be positioned with high precision without being affected by the spherical surface and the curved surface of the panel side wall, a cathode ray tube with high reliability in terms of its explosion-proof effect can be obtained.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of a reinforcing metal fitting used in the method of the present invention, and Fig. 2 shows an embodiment of a device used in the method of the present invention, where a is a plan view and b is partially omitted. This is a diagonal illustration. 2... Reinforcement metal fittings, 3... Reference hole for positioning, 4... Braun tube, 7... Guide pin.

Claims (1)

[Claims] 1. Attach two U-shaped reinforcing metal fittings that bias the mounting lugs to the TV center to the outer circumferential surface of the cathode ray tube panel.
In a method for reinforcing a cathode ray tube, in which a steel band is wound around the outer periphery of the reinforcing metal fitting, positioning reference holes are provided in advance on the side surfaces near both ends of the reinforcing metal fitting, and the mounting lug portion is supported and the reference hole is provided in advance. A method for reinforcing a cathode ray tube, comprising: positioning and adhering the reinforcing fitting to the outer peripheral surface of the panel by engaging guide pins in the holes, and then winding a steel band around the outer circumference of the reinforcing fitting with strong force. .