JPH11298827A - Fixing structure for cathode ray tube and its method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the fixing method of a cathode ray tube to a case by which a small width of the case is selected. SOLUTION: A mount metallic fixture having been originally attached to four corners of a cathode ray tube 1 is cut off and only an earth metallic fixture 12 with earth holes is left while being attached to the cathode ray tube 1. A band 2 is fitted to the cathode ray tube 1. Stationary parts 15, 16 are placed respectively to upper and lower sides of the band 2, and a mount hole 17 is made to them. The band 2 is made so that each mount hole 17 comes to a position deviated from the earth metallic fixture 12 at both ends of the upper and lower sides of the cathode ray tube 1 and fixed to the cathode ray tube. The stationary parts 15, 16 are fixed to each boss 9 by inserting a screw 4 to each mount hole 17 and tightening the screw to a thread hole of the boss 9 of an inner face of a front part of the cathode ray tube 1 to fix the cathode ray tube 1 to a case 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure and a method for fixing a cathode ray tube, and more particularly to a structure and a method for fixing a cathode ray tube to a case using an annular band.

[0002]

2. Description of the Related Art In a conventional structure for fixing a cathode ray tube, as shown in FIG. 3, a metal band 10 is wound around the cathode ray tube 1 and a mounting bracket 5 provided at a portion of the metal band 10 located at a corner of the cathode ray tube 1 is attached. The structure was screwed to the case. The mounting bracket 5 is provided with a mounting hole 11, and a grounding hole 6 is provided between the mounting hole 11 and the cathode ray tube 1. A grounding wire (not shown) is fixed to the grounding hole 6.

[0003]

However, the conventional cathode ray tube fixing structure requires a large device case.
In particular, there was a problem that the width of the case became large.

[0004] The reason is that the mounting bracket 11 attached to the cathode ray tube 1 is large, and the tip of the mounting bracket 5 projects further outward than the side of the widest part of the main body of the cathode ray tube 1 and collides with both sides of the case. This is because it is difficult to reduce the width of the case.

The present invention provides a structure and a method for fixing a cathode ray tube which solve the above problems.

[0006]

According to the present invention, there is provided a cathode ray tube fixing structure comprising a case (3 in FIG. 1) and an annular band (2 in FIG. 1) attached to the outer periphery of the cathode ray tube (1 in FIG. 1).
And fixing portions (15, 1 in FIG. 1) provided in this band.
6) and mounting holes (1 in FIG. 1) provided in the fixing portion.
7) and a screw (4 in FIG. 1) that is screwed into a screw hole provided in the case.

The structure for fixing a CRT according to the present invention comprises a case (3 in FIG. 1), a grounding metal (12 in FIG. 1) fixed to the CRT (1 in FIG. 1), and an outer periphery of the CRT. An annular band (2 in FIG. 1), fixing portions (15 and 16 in FIG. 1) provided in the band, and a mounting hole (FIG. 1) provided in the fixing portion so as to be displaced from the grounding bracket. 17) and a screw (4 in FIG. 1) that is screwed into the screw hole provided in the case through the mounting hole.

The structure for fixing a CRT according to the present invention comprises a case (3 in FIG. 1) and an annular band (2 in FIG. 1) fixed to the outer periphery of the CRT (1 in FIG. 1) by its own elastic force.
And fixing portions (15, 1 in FIG. 1) provided in this band.
6) and mounting holes (1 in FIG. 1) provided in the fixing portion.
7) and a screw (4 in FIG. 1) that is screwed into a screw hole provided in the case.

In the above-mentioned structure for fixing a cathode ray tube, the band can be made of, for example, a polyimide resin as a material.

According to the method for fixing a cathode ray tube of the present invention, a fixing portion (15, 16 in FIG. 1) is provided on the outer periphery of the cathode ray tube (2 in FIG. 1).
Attach an annular band (2 in FIG. 1) provided with a screw, pass a screw (4 in FIG. 1) through an attachment hole (17 in FIG. 1) provided in the fixing portion, and install it in a case (3 in FIG. 1). It is screwed into the screw hole provided.

The method for fixing a cathode ray tube according to the present invention uses a grounding hole (6 in FIG. 3) fixed to the cathode ray tube (1 in FIG. 1).
And a first mounting hole (FIG. 3)
11), only a portion having the first mounting hole is cut in advance from the mounting bracket (5 in FIG. 3) provided with the grounding bracket (1 in FIG. 3) having the grounding hole.
2) is fixed to the cathode ray tube, and an annular band (2 in FIG. 1) provided with fixing portions (15 and 16 in FIG. 1) is attached to the outer periphery of the cathode ray tube, and then a screw is attached. A method of attaching the cathode ray tube to the case by passing through a second attachment hole provided in the fixing portion and screwing into a screw hole provided in the case, wherein the second attachment hole is connected to the grounding hole. The band is attached to the cathode ray tube so as to be shifted from a metal fitting.

[0012]

Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an exploded perspective view showing a cathode-ray tube fixing structure according to an embodiment of the present invention.

In the present embodiment, a cathode ray tube 1 is inserted into a case 3 having a front surface provided with a window 13 on the front surface, and a rear surface opening, and an image display unit 14 is fitted to the window 13 so that the cathode ray tube 1 is brought into contact.
Is fixed to the case 3. A metal band 10 is wound around the cathode-ray tube 1 at the time of manufacture. At four corners of the cathode-ray tube 1 of this metal band, mounting brackets 5 shown in FIG. Is cut off from the cutting line AA, and only the grounding metal fitting 12 where the grounding hole 6 is provided is left fixed to the CRT 1. Therefore, the cathode ray tube 1 is kept grounded by the ground wire connected to the ground hole 6.

A band 2 is wound around the outer periphery of the cathode ray tube 1 and attached. The material of the band 2 is made of a material such as polyimide (nylon) that is not easily plastically deformed. The band 2 is made to have a length slightly smaller than the outer circumference of the portion where the CRT 1 is attached. The band 2 is fixed to the cathode ray tube 1 by force.

The band 2 is provided with a long fixing portion 15 on the upper side along the upper side and a short fixing portion 16 on a portion near both ends of the lower side, and two mounting holes 17 on both ends of the fixing portion 15. Each fixing portion 16 is also provided with one mounting hole 17. The band 2 is manufactured such that these mounting holes 17 are located at positions shifted from the grounding metal fitting 12 at both ends of the upper side and the lower side of the cathode ray tube 1, and the band 2 is shifted so that the band 2 is shifted.
Fixed to

A boss 9 is provided on a front inner surface of the case 3 at a position corresponding to the mounting hole 17. The fixing portions 15 and 16 are screwed into the screw holes provided in the boss 9 by screwing the screws 4 passing through the mounting holes 17 into the boss 9.
And the cathode ray tube 1 is fixed in the case 3.

Even when the Braun tube does not have the mounting fitting 5 from the beginning, it can be fixed to the case by the band 2.

[0019]

The effect of the present invention is that the case for fixing the cathode ray tube can be made smaller, and in particular, the width of the case can be made smaller.

The reason that the case could not be made smaller with the conventional mounting structure is that the mounting bracket for fixing the conventional CRT is larger than the width of the main body of the CRT. When trying to make it, the case and the metal fitting hit before the cathode ray tube main body, so the width of the case had to be larger than the maximum width of the cathode ray tube main body only in the metal fitting part.

Therefore, by fixing the cathode ray tube with the fixing portion provided on the band of the present invention, it becomes possible to cut off the unnecessary mounting holes of the mounting brackets and reduce the width of the case.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a cathode-ray tube fixing structure according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a state in which a fixing portion 15 in FIG. 1 is screwed to a boss 9 of a case 3;

FIG. 3 is a front view showing a mounting bracket provided on a cathode ray tube 1 having a conventional cathode ray tube fixing structure.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 CRT 2 band 3 case 4 screw 5 mounting bracket 6 grounding hole 9 boss 10 metal band 11 mounting hole 12 grounding bracket 13 window 14 image display unit 15 fixing unit 16 fixing unit 17 mounting hole

Claims (6)

[Claims] 1. A case, an annular band attached to the outer periphery of a cathode ray tube, a fixing portion provided in the band, and a screw hole provided in the case through a mounting hole provided in the fixing portion. A fixing structure for a cathode ray tube, comprising: a screw to be screwed. 2. A case, a grounding fixture fixed to the cathode ray tube, an annular band attached to the outer periphery of the cathode ray tube, a fixing portion provided on the band, and the grounding fixture being displaced from the grounding fixture. A cathode ray tube fixing structure, comprising: a mounting hole provided in a fixing portion; and a screw passing through the mounting hole and screwing into a screw hole provided in the case. 3. A case, an annular band fixed to the outer periphery of a cathode ray tube by its own elastic force, a fixing portion provided in the band, and a mounting hole provided in the fixing portion, the case being provided in the case. And a screw screwed into the screw hole provided. 4. The structure according to claim 1, wherein the band is made of a polyimide resin. 5. An annular band provided with a fixing portion on an outer periphery of a cathode ray tube, wherein a screw is passed through a mounting hole provided in the fixing portion and screwed into a screw hole provided in a case. How to fix CRT. 6. A part having the first mounting hole is cut out in advance from a mounting bracket having a grounding hole fixed to a cathode-ray tube and a first mounting hole on the tip side of the grounding hole. Only a grounding metal fitting having a hole was fixed to the cathode ray tube, an annular band provided with a fixing portion was attached to the outer periphery of the cathode ray tube, and then a screw was provided on the fixing portion. A method of attaching the cathode ray tube to the case by passing through a second attachment hole and screwing into a screw hole provided in the case, wherein the band is displaced from the grounding fitting. Is attached to the cathode ray tube.