KR970006531Y1 - Prevention device of double sink in monitor case - Google Patents

Abstract

none.

Description

Double sagging prevention device of monitor case

1 is an exploded perspective view showing a monitor according to the prior art.

2 is an assembled cross sectional view of the monitor shown in FIG.

3 is a perspective view schematically showing a double sagging prevention device of the monitor case according to the present invention.

Figure 4 is an exploded perspective view schematically showing a double sag prevention device of the monitor case according to the present invention.

(A) and (b) of FIG. 5 are sectional drawing which expanded and the principal part of the assembly of the double sag prevention device shown in FIG.

* Description of the symbols for the main parts of the drawings *

10: cathode ray tube (CRT) 10a: panel

10b: funnel 11: band

12 lug 12a screw hole

13: deflection yoke 14: fixing screw

20: main circuit board 21: magnetization erase coil

22: wire 30: chassis frame

31: bending portion 31a: locking step

32: insertion hole 33: locking piece

34: guide rail 40: front case

41, 42: 1st, 2 fixing part 50: rear case

50a: coupling hole 50b: fixing hole

70: mold frame 71, 72: first and second protrusions

73: protrusion 74: fixing protrusion

75: support piece 76: prop

80: medium case 81: boss

81a: insertion hole

The present invention relates to a device for preventing sagging of a monitor case, and more particularly, a cathode ray tube and an electronic component installed in a monitor case by forming a double preventing means for preventing case sagging in a mold frame for fixing a main circuit board. The present invention relates to a device for preventing double sagging of a monitor case so as to easily prevent sagging due to the load.

In general, a computer used in an OA device or an information and communication field includes a main body for storing data, a keyboard for modifying and utilizing the data, and a monitor that can be displayed on a screen. (CRT) and electronic components are mounted, and the main circuit board on which the circuit pattern is formed is fixedly installed to perform each function.

In the conventional monitor, as shown in FIG. 1, a band 11 is mounted at a boundary of a cathode ray tube (CRT) 10 formed by combining a panel 10a and a funnel 10b. In order to fix the cathode ray tube 10 at each corner of the band 11, a lug 12 having a screw hole 12 a is fixed by welding or the like, and an electron gun is attached to the rear end of the cathode ray tube 10. A deflection yoke 13 is mounted to deflect the electron beam scanned in the.

In addition, the magnetization scavenging coil 21 to which the wire 22 is connected is fixed to the rear side of the cathode ray tube 10, and a main circuit board 20 on which the electronic components are mounted is installed at an outer lower portion of the cathode ray tube 10. In order to fix the main circuit board 20 in the case, one side lower surface of the front case 40 is provided with a chassis frame 30 fixed by fixing means such as screws.

The chassis frame 30 has a bent portion 31 that is bent in a "c" shape in front of both side walls having a step shape in the longitudinal direction, and below the bent portion 31, a locking step 31a is formed. The guide rail 34 in which the insertion hole 32 and the engaging piece 38 are formed is fitted to the locking step 31a to insert and fix the main circuit board 20.

On the other hand, one side of the front case 40 to which the cathode ray tube 10 is fixed by the fixing screw 14, the first fixing portion 41 which is tapped to correspond to the screw hole 12a of the lug 12, The second fixing part 42 for engaging the rear case 50 having the coupling hole 50a is protruded.

In the conventional monitor configured as described above, the first fixing portion 41 protruded on one side of the front case 40 and the screw hole 12a of the lug 12 fixed to each corner of the band 11 are matched. In the state, the cathode ray tube 10 is fixed to the inner surface of the front case 40 by tightening with the fixing screw 14.

In order to install the main circuit board 20 under the cathode ray tube 10, first, the chassis frame 30 to which the main circuit board 20 is fixed is assembled. The locking piece 33 of the guide rail 34 is fixed to the side wall behind the locking step 31a formed in the chassis frame 30, and the main circuit board is inserted into the insertion hole 32 of the guide rail 34. In the state in which both ends of the front end portion 20 are inserted, the main circuit board 20 is pushed and fixed in the longitudinal direction, and then the chassis frame 30 is fixed to the front case 40.

In addition, the coupling hole 50a of the rear case 50 is matched with the second fixing part 42 of the front case 40, and then the rear case 50 is fixed to the front case 40 with a fastening screw. It is to protect the tube 10 and the main circuit board 20 and the like.

However, the conventional monitor case in which the cathode ray tube and the main circuit board are embedded and protected as described above, however, as shown in FIG. 2, the cathode ray tube fixed to the inner surface of the front case and the electronic component mounted on the main circuit board. The deflection of the case is caused by the load of the load, and there is a gap between the front case and the rear case, which are combined with the fastening screws, and foreign matters such as dust penetrate into the monitor, which causes problems in the performance of the monitor and deforms the monitor case. There was a problem of harming the mirror of the appearance.

Therefore, the present invention is to solve the above problems, the object of the present invention, by forming a double prevention means for preventing the sag of the case in the mold frame for fixing the main circuit board, the cathode ray tube and the main circuit board It prevents the deflection of the case due to the load of the electronic parts mounted on it and removes foreign substances such as dust that penetrates into the monitor, so that the monitor can function normally and maintain the beautiful appearance of the monitor. It is to provide a double sag prevention device of the case.

Characteristic of the dual sag prevention device of the monitor case according to the present invention for achieving the above object, the cathode ray tube is fixed to the inner side of the front case, the chassis frame is installed below the cathode ray tube is fixed to the main circuit board And a rear case coupled to a front case to protect the cathode ray tube and the main circuit board, the monitor being inserted into a medium case which is joined to one side of the front case to fix the main circuit board. A mold frame having a protrusion formed thereon, and a protrusion formed at the front end portion of the mold frame, and has a double prevention means to prevent sagging of the monitor case due to the load of the cathode ray tube and the electronic component.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the double sag prevention device of the monitor case according to the present invention will be described in detail.

3 is a view showing a double sagging prevention device according to the present invention, the mold frame 70 is provided with a fixing means for easily fixing and detaching the main circuit board 20 on which the electronic component is mounted, the mold frame 70 The first protrusions 71 corresponding to each other are formed on both side surfaces thereof, and the second protrusions 72 protrude to form a predetermined gap on the first protrusions 71.

In addition, a protrusion 73 protrudes in a horizontal direction on the bottom surface of the mold frame 70 to prevent bending of the main circuit board 20 due to the load of an electronic component, and a cathode ray is formed on an upper surface of one side of the mold frame 70. The "b" shaped fixing protrusion 74 is integrally formed so as to fix the wire 22 connected to the magnetization elimination coil 21 for canceling the electromagnetic waves generated in the tube 10.

In addition, the front end portion 40 of the mold frame 70 is supported to support the front case 40 is formed to extend the support piece 75 which is a double prevention means to prevent sagging due to the load of the cathode ray tube 10 and the electronic components, On both bottom surfaces of the support piece 75, a support 76 for distributing the load of the cathode ray tube 10 is mounted.

Meanwhile, a boss 81 having an insertion hole 81a formed at each corner of the medium case 80 to be fitted to the front case 40 so that the second fixing part 42 of the front case 40 is inserted. Is protruding.

The double sag prevention device of the monitor case configured as described above will be described with reference to FIGS. 4 and 5.

First, the second fixing part 42 of the front case 40 is inserted into the insertion hole 81a of the medium case 80 to completely form the media case 80, and then the cathode ray tube 10 is fixed in a plurality. The screw 14 is fixed to the first fixing part 41 of the front case 40. At this time, the outer surface of the cathode ray tube 10 is in contact with the inner surface of the front case 40 and the medium case 80, it is possible to distribute the load of the cathode ray tube 10 by an equal distribution load.

In addition, after inserting both sides of the main circuit board 20 installed below the cathode ray tube 10 between the first protrusions 71 and the second protrusions 72 protruding from both sides of the mold frame 70, the fine force is applied. When the pressure is fixed to the main circuit board 20, the bottom surface of the main circuit board 20 is seated on the protrusion 73 protruding from the bottom of the mold frame 70, thereby preventing bending of the main circuit board 20 due to the load of the electronic components. It is.

Meanwhile, the wire 22 of the magnetization eliminating coil 21 mounted on the main circuit board 20 is inserted into and fixed between the fixing protrusions 74 protruding from the upper surface of the mold frame 70, and the mold frame is fixed. (70) Since the support piece 65 formed at the tip portion supports the medium case 80 to distribute the load of the cathode ray tube 10, and the support 76 mounted on both bottom surfaces of the support piece 75 is rear The case 50 is inserted into the fixing hole 50B formed on the inner surface of the case 50 to transfer the load of the cathode ray tube 10 and the electronic parts onto the table on which the motor is seated. You can normally perform the function of.

As described above, according to the double deflection prevention device of the monitor case according to the present invention, the monitor case sag due to the load of the electronic components mounted on the cathode ray tube main circuit board is prevented in advance, and foreign matter such as dust into the monitor. It can prevent the penetration and allow the monitor to function normally.

Claims (2)

A cathode frame is fixed to the inner side of the front case, and a chassis frame for fixing the main circuit board is installed at the lower side of the cathode ray tube, and a monitor composed of a rear case coupled to the front case to protect the cathode ray tube and the main circuit board. To A mold frame having first and second protrusions inserted into a medium case formed to one side of the front case to fix the main circuit board. And a double prevention means protruding from the front end of the mold frame and configured to prevent sagging of the monitor case due to the load of the cathode ray and the electronic component. The method of claim 1, wherein the double prevention means, A double sagging prevention device of a monitor case comprising a support piece inserted into a medium case to which a cathode ray tube is fixed, and a support which is inserted into a fixing hole of a rear case to transfer the load of the cathode ray tube to a table on which the monitor is seated.