JPS5854776Y2 - Deflection yoke shield cylinder mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a configuration in which a shield tube is attached around a deflection yoke in a television receiver.

In order to prevent the influence of leakage magnetic fields generated from the deflection yoke, a shield tube is attached around the deflection yoke.

Figures 1 and 2 show such a conventional shield tube mounting device, where 1 is a cabinet, 2 is a cathode ray tube, and 3 is a mounting device for a shield tube.
4 is a shield case, 4 is a deflection yoke, 5 is a convergence yoke, and 6 is a circuit board.A cylindrical shield tube 7 is arranged around the deflection yoke 4, and a wire spring 8 and a coil are connected to the shield case 3 by means of a spring 9. It is designed to be fixed by pulling it.

However, in such a conventional device, there is a risk that the position of the shield tube 7 changes due to vibration or deterioration of the coil spring 9, and the shield tube 7 comes into contact with the terminal portion 10 of the deflection yoke 4 or comes off.

Furthermore, when installing the shield tube 7, the cathode ray tube 2 must be housed in the cabinet 1 as shown in Fig. 3, and the installation work must be done in a narrow space, and the surrounding chassis 11 etc. may get in the way. The workability is poor, and there is a risk of injury if the coil spring 9 etc. comes off when it is installed.

Therefore, the object of the present invention is to provide a deflection yoke shield tube mounting device that eliminates such conventional drawbacks, and one embodiment thereof will be described below with reference to FIGS. 4 to 6.

In this device, as shown in FIG. 4, a shield tube 13 is used, which is a rectangular metal shield plate 12 bent into a cylindrical shape.

The connecting part has hooks 14 and 15 and locking holes 16 and 17.
Let's set this.

It is preferable to provide two or more hooks 14, 15 at different distances from the edge of the shield plate 12.

After attaching the deflection yoke 4 to the cathode ray tube 2, a cushioning material 19 such as a piece of hard rubber is provided between the front end of the insulating frame 18 of the deflection yoke, and a shield plate 12 is arranged around the deflection yoke 4. hook 14.15 and locking hole 16,
17, the shield cylinder 13 is attached.

The buffer material 19 may be adhered to the insulating frame 18 or the shield plate 12 in advance.

When installing it, first connect the hook 14 close to the edge to the locking hole 16 as shown in FIG. 6A and loosely temporarily fasten it, then hook 15 located away from the edge as shown in FIG. 6B. If it is connected to the locking hole 17 and attached tightly, it can be attached with good workability.

By attaching the shield tube] 3 to the deflection yoke 4 in this manner, it can be firmly and stably attached, and the shield tube 13 can be damaged by vibrations etc. during use or transportation.
It is possible to eliminate the possibility that the mounting position will change.

In addition, since it can be installed simply by connecting the hooks 14, 15 and the locking holes 16, 17, installation work efficiency can be improved. The shield tube 13 can be attached in advance with the deflection yoke 4 attached before storing the shield tube 2 in the cabinet 1, so there is no need to work inside the cabinet as in the conventional case, which also improves work efficiency. This can be significantly improved.

As described above, according to the present invention, it is possible to obtain a practical device that can firmly and stably attach a shield tube with good workability.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional side view of a conventional deflection yoke shield cylinder mounting device, Fig. 2 is a cross-sectional rear view thereof, Fig. 3 is a perspective view of the attached state, and Fig. 4 is a deflection yoke according to an embodiment of the present invention. A perspective view of the shield tube of the shield tube mounting device, FIG. 5 is a cross-sectional rear view of the device, FIGS. 6 A and B are enlarged perspective views of the main parts in the attached state, and FIGS. 7 and 8 are other implementations. FIG. 3 is a cross-sectional view and a front view of an example deflection yoke shield tube attachment device. 1... Cabinet, 2... Braun tube, 4... Deflection yoke, 12... Shield plate, 13... Shield tube, 14. 15...
...Hook, 6.17...Latching hole, 18.
...Insulating frame, 19...Cushioning material.

Claims (2)

[Scope of utility model registration request] (1) A rectangular metal shield plate is bent into a cylindrical shape, a hook and a locking hole are provided at the joining part, the shield plate is placed around the deflection yoke, and the shield plate and the deflection yoke are connected. A deflection yoke shield tube mounting device comprising: a cushioning material such as a rubber piece provided between the hooks and the locking holes; and the shield plate is attached to the deflection yoke. (2) The deflection yoke shield tube mounting device according to claim 1, which is a utility model, and includes two or more coupling hooks arranged at different distances from the edge of the shield plate.