KR20000001768U - Plasma Display Panel TV Cooling Fan Vibration-proof Fixture - Google Patents

Abstract

The present invention relates to a plasma display panel TV cooling fan anti-vibration fixing means, and formed in a plurality of fastening holes corresponding to the housing 10 and the matching bending portion of the fan to fasten with a bolt, the fan housing 10 ) And a vibration isolator 12 is disposed to prevent and absorb vibration by elastically spaced between the bending portion 11 and the corresponding corresponding bending portion 11, wherein the vibration isolator 12 is two annular plate (13, 14 are elastically spaced apart and connected to the plurality of tension coil springs 15, wherein the tension coil springs are formed on the protrusion pieces 16 protruding radially outwardly on the outer circumferential surfaces of the plates 13 and 14, respectively. Both ends are fixed to the dragon hole 17, and there is an advantage in that vibration is effectively prevented even in a machining error of the bending part in which the cooling fan housing is mounted.

Description

Plasma Display Panel TV Cooling Fan Anti-vibration Fixture

The present invention relates to a fixing means for preventing vibration when mounting a cooling fan in a Plasma Display Panel (PDP) TV, in particular, when there is an error exceeding the allowable processing error range of the bracket for mounting the cooling fan. It relates to a fixing means of the structure to prevent possible vibration.

In general, a plasma display panel that displays characters or images by using light emission of a liquid crystal device by discharge as a next-generation display device of the conventional display device which scans an electron beam with an electron gun to form an image on a screen of a cathode ray tube. This has led to the development of stages commonly used as televisions and other video display devices. The plasma display panel has a high heat during operation to be provided with a cooling fan to be cooled by a forced blow method, for this purpose it is mounted on the cooling fan TV case with a bracket.

FIG. 1 exemplarily shows a mounting state on a bracket 2 for mounting a conventional cooling fan 1 to a TV case, and joins the bending portion 3 to the bracket 2 having a structure formed by bending a plate. And the fan 1 is firmly fixed to the protrusion by fixing means such as a screw 4. In addition, the fan may be mounted directly to the main body case without using the bracket as described above. At this time, if there is a gap between the contact surface of the bending part where the fan is mounted and the seating surface of the fan, the rotational force causes the fan housing to vibrate at the contact surface due to unbalance of the rotation center when the fan rotates by the motor driving of the fan itself. Noise caused by the noise and the screen portion, and when the bending portion is inclined rather than at right angles, is difficult to process the shape of the bending portion itself, so that the above-mentioned vibration noise and noise cannot be avoided. . In order to prevent such vibration, it is desirable to make the contact area as wide as possible and to firmly support both the upper and lower sides rather than the one part.

The object of the present invention is to provide a fixing means capable of absorbing and preventing the occurrence of vibration by allowing the surface of the cooling fan to be uniformly seated even when the angle of the cooling fan mounting band is poor in the conventional plasma display panel TV. It is done.

1 is a schematic side cross-sectional view of mounting a cooling fan of a conventional plasma display panel TV with bolts.

Figure 2 is an exploded perspective view of the anti-vibration fixing means used when mounting the cooling fan in the plasma display panel TV according to the present invention.

3 is a schematic cross-sectional view of a cooking state using the fixing means of FIG.

Figure 4 is a schematic explanatory diagram showing the deformation amount of the spring with respect to the load, for explaining the principle of the anti-vibration action of the fixing means according to the present invention.

<Description of Symbols for Main Parts of Drawings>

10: fan housing 11: bending part

13,14: plate 15: spring

16: protrusion 19: rubber plate

20: rubber washer 21: bolt

22: nuts

In order to achieve the above object, a plurality of fastening holes are formed to correspond to the housing and the matching banding portion of the plasma display panel TV cooling fan according to the present invention, and the vibration absorption and the position adjustment annular rubber plate are disposed on the upper surface of the bending portion. Two anti-vibration plates are spaced apart by a plurality of tension coil springs, and the bottom of the fan housing is seated on the top of the anti-vibration plate, and an anti-vibration rubber washer is inserted into the top of the fan housing to insert bolts through the fastening holes. By fastening and fastening the nut to the protruding end is configured to elastically support the fan housing and the bending portion to prevent vibration.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings showing an embodiment of the present invention.

The fan fixing means for cooling the plasma display panel TV of the present invention is shown in exploded view in FIG. 2 and as can be seen from the sectional view assembled in the use state in FIG. It includes a dust-proof means 12 which is provided to elastically spaced between the bending bending portion 11 to prevent and absorb the generation of vibration.

In the dustproof means 12 according to the present invention, two annular plates 13 and 14 are arranged to be elastically spaced apart from a plurality of tension coil springs 15, and the tension coil springs are respectively plate 13, Both ends are fixed to the fixing hole 17 formed in the protruding piece 16 protruding radially outward on the outer circumferential surface of the 14).

The dustproof means 12 is disposed between the protrudingly joined banding portions 11 of the bracket (only one banding portion is shown in the drawing for simplicity) and the corresponding fan housings 10, but the banding portion (11) is interposed an annular rubber plate 19 formed with four protruding pressing projections 18 on the bottom surface, the dustproof rubber washer 20 is disposed on the upper surface of the fan housing 10 to the bolt 21 It is penetrated and fastened with a nut 22.

Referring to Figure 4 will be described the operation of the dustproof means 12 according to the present invention.

When the load acts downward in the tension coil spring having a constant spring constant (k), the load (P) is distributed so that the repulsive force (T) acts in the opposite direction to the load at the lower end of each spring to balance the force. In other words,

P = T1 + T2 + T3 + T4 = k (x1 + x2 + x3 + x4)

Is displayed. Therefore, when an equal distribution load is applied, a spring having a uniform spring constant acts as a function of its tensile length x to adjust its position. Therefore, vibration is prevented through the uniformity of the contact area.

However, when the bending portion is formed by inclining by a predetermined angle, when a load P is applied, an uneven distribution load acts on the center of G. At this time, the upper plate of the dustproof means is inclined by L, and vibration may occur in the upper plate. have. On the contrary, in order to replace the spring 15 with the distribution of the force (load) due to the floating distribution load at the time of setting the first anti-vibration means, by adjusting the tension length (x) at each point of the spring to balance the force, the lower plate Should be in full contact with the bottom of the fan housing. That is, compared to when the equal load is applied, when the inequality load is applied, kx2 in the initial state changes to kx2 ', kx3 turns into kx3', kx4 turns into kx4 ', and the deformation amount L also springs based on L1. It is changed to L2 ', L3', and L4 '. Accordingly

P = k (x1'L1 '+ x2'L2' + x3'L3 '+ x4'L4'), where there is no displacement of L1 ', so k (x2'L2' + x3'L3 '+ x4'L4' Is indicated by). This causes the lower plate 14 to maintain sufficient surface contact with the bending surface when the deformation occurs and the tilting phenomenon occurs, each spring is extended only by the required amount of tensile length. Therefore, vibration is prevented by the optimum condition in which vibration can be prevented irrespective of the processing state of the bending portion, that is, the upper and lower plates firmly contact the rubber plates interposed on the bottom of the fan housing and the surface of the bending portion.

According to the present invention, even if it is inclined due to the processing of the bending part for mounting the fan, the contact is always kept constant irrespective of this, so the vibration prevention effect is large, and the lower plate and the rubber plate and the bolt head and the washer rubber have vibration absorption effect. Vibration caused by driving is effectively prevented.

Although the preferred embodiments according to the present invention have been described above, it will be understood by those skilled in the art that various modifications and changes can be made without departing from the scope of the utility model registration claims of the present application.

Claims (2)

In a structure in which a plurality of fastening holes are formed to correspond to the housing 10 of the fan and the joining bending part 11 to be fastened with bolts, between the fan housing 10 and the corresponding bending part 11 are formed. A vibration display means for preventing vibration of the plasma display panel TV cooling fan, characterized in that the vibration isolator 12 is disposed so as to elastically spaced to prevent and absorb the vibration. According to claim 1, wherein the dustproof means 12 is two annular plates (13,14) are connected elastically spaced apart by a plurality of tension coil springs 15, the tension coil springs are each plate ( Both ends are fixed to the fixing hole (17) formed in the protruding piece (16) protruding radially outward on the outer circumferential surface of the 13, 14, characterized in that the plasma display panel TV cooling fan anti-vibration fixing means.