KR20050110370A - Base material be fixed by screw having prevent not-loosen function and liquid crystal display device module using thereof - Google Patents

Abstract

The present invention provides a screw coupling base material having a loosening prevention function through which a screw hole penetrates and one surface is in contact with the head of the screw, wherein at least one locking piece protrudes along the periphery of the screw hole of the one surface in contact with the bottom surface of the screw. It provides a base material for screwing with a loosening preventing function, using the at least one fastening piece to guide the insertion direction correctly when the screw is fastened, and at the same time increase the frictional force and the vertical drag of the pre-fastened screw In this way, even an unskilled person can easily and simply perform a screwing operation in a small screw or a narrow space and greatly improves the reliability of the coupling.

In particular, when the present invention is applied to a liquid crystal display module, the effect is great. Specifically, the backlight assembly and the liquid crystal panel are coupled to the rear surface of the support main on which the liquid crystal panel is seated, so that the liquid crystal display device is coupled to the top cover that borders the edge of the liquid crystal panel. In the cover bottom constituting the module, it can be applied to the assembly of the shield box placed on the back of the cover bottom to protect the casing by driving various driving circuits.

Description

Base material be fixed by screw having prevent not-loosen function and liquid crystal display device module using the same

The present invention relates to a screw coupling base material having an anti-loosening function and a liquid crystal display device module using the same. More specifically, the screw is guided so that the screw can be inserted correctly when screwing, and at the same time, once loosened, the screw is hardly prevented from loosening. The present invention relates to a screw base material having a function of and a liquid crystal display module using the same.

Generally, a screw is a mechanical element that is based on joining two or more parts separated from each other, and furthermore, performs a function of distance adjustment and power transmission therebetween, and is largely projected from the head part and its bottom surface. It can be divided into a round rod-shaped shaft. The upper surface of the double head is provided with a screw driver having a corresponding shape by digging a fastening groove such as a cross or a crisscross, and at least one spiral groove is dug along the outer surface of the shaft to form a thread. .

The general screws are coupled to each other in such a manner that the two or more parts separated from each other are inserted through the end of the shaft described above. In this case, at least one of the two or more parts separated from each other may be threaded therethrough. The inner surface of the screw groove corresponding to the thread formed on the outer surface of the shaft of the screw may be formed.

For reference, such a screw may be divided into a right-handed screw and a left-handed screw according to the method of proceeding, and according to the cross-sectional shape of the thread formed along the outer surface of the shaft, a triangular screw, an angular screw, It may be divided into a trapezoidal screw, toothed screw, round screw, etc., and may be divided into a bolt or a simple screw according to the coupling with the nut, but the screw is used herein as a generic term for all of them.

1 and 2 are respectively a perspective view and an exploded perspective view showing a part of the base material 12 which is in contact with the head 4 of the screw 2, in particular of the common screw 2 and the elements joined thereto, respectively; 1 is a cross-sectional view taken along the line III-III of FIG. 1, which is inserted from one end of the shaft 8 of the screw 2 into one surface of the base material 12 to cover the base material at least one or more parts 18 thereof. And engaged with the thread 10 formed on the outer surface of the shaft 8 of the screw 2 along the inner surface of the screw hole 14 penetrated by the base material 12 and the component 18. The screw groove 16 is formed as described above.

And the upper surface of the head (4) of the screw (2) is formed with a cross-shaped fastening groove 6 corresponding to the screw driver, but this can be replaced in the form of a date or the like according to the purpose.

On the other hand, as shown in the shaft 8 of the screw (2) is the correct fastening to be inserted straight parallel to the longitudinal direction of the screw hole 14 of the base material 12 and the part 18, which is the right fastening Due to various factors such as the narrow working environment or the size of the screw (2), when the tightening force is applied in uneven direction, the shaft (8) is often inserted at an angle and inserted obliquely to one side. .

In this case, since excessive force is applied in a state in which the thread 10 of the outer surface of the shaft 8 and the screw groove 16 formed on the inner surface of the screw hole 14 of the base material 12 and the component 18 are not engaged with each other. Breakage, such as the wear of the thread 10 and / or the threaded grooves 16, may occur, as a result of which the screws 2 may be loosely coupled to each other or the screws 2 may be easily loosened and loosened by external pressure, Disassembly and reassembly becomes difficult.

In addition, even if the screw 2 is correctly tightened, the phenomenon that the screw 2 is loosened frequently due to the shaking due to the external pressure applied by the transport of the base material 12 is caused, and thus the screw 2 that is periodically loosened is Unnecessary post-maintenance such as retightening is required.

Accordingly, the present invention has been made in order to solve the above problems, and guided to ensure that the screw is correctly inserted into the screw hole formed in the base material and at the same time once screwed for screwing with a function of preventing loosening so that the screw is hardly loosened The purpose is to provide a base material.

In addition, the present invention provides a liquid crystal display device module as a specific use example of such a screw coupling base material, assuming that the shield box coupled to the cover bottom to the above-described base material to enable a more reliable coupling.

The present invention is a screw mating base material having an anti-loosening function through which a screw hole penetrates and one surface is in contact with the head of the screw in order to achieve the above object, along the periphery of the screw hole of the one surface in contact with the bottom of the head. It provides a base material for screwing having a loosening prevention function, characterized in that at least one locking piece protrudes.

In this case, the at least one catching piece is characterized in that at least four or more arranged to be symmetrically arranged to maintain the same distance from the center of the screw hole while maintaining the same height, respectively, in particular the at least one catching piece each A portion of the base material corresponding to the rear surface of the head is cut and raised so as to ascend at an inclination of 90 ° or less along the engagement direction of the screw with respect to the vertex.

In addition, the present invention and the support main and the backlight assembly and the liquid crystal panel is sequentially seated; A cover bottom coupled to the support main back surface; A top cover bordering the edge of the liquid crystal panel and coupled to the support main and the cover bottom; In order to protect the printed circuit board connected to the backlight assembly and the liquid crystal panel, a screw is placed on the rear surface of the cover bottom, and at least one screw hole penetrates to the outer surface where the head of the screw is in contact with each other. It provides a liquid crystal display module comprising a shield box, characterized in that at least one locking piece protrudes along the periphery.

In this case, the at least one hook piece is characterized in that at least four or more arranged to be symmetrically arranged to maintain the same distance from the center of each screw hole while maintaining the same height, each of the at least one hook piece is the highest height A portion of the outer surface of the shield box corresponding to the rear surface of the head may be cut and raised so as to ascend at an inclination of 90 ° or less along the engagement direction of the screw with respect to a vertex pointed at.

The backlight assembly may further include a reflection plate mounted on the support main; At least one fluorescent lamp arranged along at least one inner longitudinal direction of the support main body on the reflecting plate; A light guide plate seated on the reflective plate to be flush with the fluorescent lamp; The side light type or the backlight assembly including a plurality of optical sheets mounted on the light guide plate may include a reflection plate mounted on the support main; A plurality of fluorescent lamps arranged side by side on the reflecting plate; It is characterized in that the direct type comprising a plurality of optical sheets seated on the fluorescent lamp, the present invention will be described in more detail with reference to the drawings.

4 and 5 are respectively a perspective view of the screw coupling base material 62 (hereinafter simply referred to as the base material 62) having an anti-loosening function according to the present invention and a screw 52 inserted therein. As an exploded perspective view, the screw 52 first inserted into the base material 62 may be divided into one end of the head 54 and a rod-shaped shaft 58 protruding from the bottom thereof, and a screw driver on the upper surface of the double head 54. The fastening grooves 56 of a straight or cross shape can be dug so that they can be fastened or separated using a screw, and at least one thread 60 is dug in a spiral shape along the outer surface of the shaft 58. It is based.

These screws 52 can thus engage each other by inserting them through the base material 62 and at least one component (see 58 in FIGS. 6A and 6B) intended to be coupled thereto, and the invention particularly relates to such screws 52. At the same time as the guide to ensure that the screw is correctly inserted into one surface of the base material 62 in contact with the head 54 of the) is characterized in that it has a loosening prevention function so that it is hardly loosened once.

6A to 6B and VII-VII of FIG. 5, which are cross-sectional views corresponding to the VI-VI line of FIG. 4, respectively, for the base material 62 and the screw 52 inserted thereto, according to the present invention. Referring to Figure 7, which is a cross-sectional view cut along, as shown in the base material 62 according to the invention at least one or more along the periphery of the screw hole 64 on one surface in contact with the head 54 of the screw 52 The locking piece 70 protrudes, and preferably, the at least one locking piece 70 maintains the same distance from the center of the screw hole 64 while maintaining the same height as each other. It is arranged along the periphery and may be provided with four or more so as to be symmetrical from the center of the screw hole 64 in particular.

Accordingly, the bottom surface of the head 54 gradually closer to one surface of the base material 62 according to the fastening of the screw 52 comes into contact with these at least four or more locking pieces 70 simultaneously, if the shaft 58 of the screw 52. When the screw holes 64 are inserted at an angle without being parallel to the longitudinal direction, these locking pieces 70 are corrected in the correct direction.

That is, when the screw 52 is inserted obliquely into the threaded hole 64, the engaging piece 70 located on any one side hits a portion of the bottom surface of the head 54 first, and accordingly, the engaging piece (70) exerts a repulsive force to push the bottom of the head 54, but can be inserted more easily on the other side around the screw hole 64, as a result of which the tightening direction of the screw 52 Correctly twisted, the bottom of the head 54 is modified to apply a uniform pressure to each of the engaging pieces 70, and through this action, the screw 52 is in the correct direction of engagement, that is, the center of the screw hole 64 and the shaft 58 may be guided to be aligned.

In addition, as shown in FIG. 7, the locking piece 70 has a gentle b-angle inclination of 90 ° or less as it gradually goes toward the engagement direction of the screw 52 with respect to the vertex P having the highest height. It is preferable that the opposite direction of the engagement of the 52, that is, the triangle 52 or the like shape in which a larger inclination of the angle increases sharply toward the disassembly direction of the screw 52, and the base material 62 corresponding to the back of the head 54 for this purpose. ) It can be configured in the form as described above by cutting a part.

In this case, the reason why the locking piece 70 is formed in the above-described form is to prevent the screw 52 which is already fastened from being easily loosened, and the reason why the part of the base material 62 is cut and raised is formed to a certain degree. This is to prevent the detachment of the screw 52 during fastening by imparting elasticity.

That is, when the screw 52 is fastened, the moving direction of the head 54 is moved as shown by the arrow of FIG. 7, and as the surface of the head 54 is gradually closer to one surface of the base material 62, In this case, each of the engaging pieces 70 has a b angle of 90 ° or less toward the engagement direction of the screw 52, based on the highest height vertex P as described above. While the inclination is gently raised, the angle a larger inclination is rapidly raised as it goes toward the opposite direction of the engagement of the screw 52. In the end, each engaging piece 70 is like the spring, opposite the fastening direction of the screw 52, again. In other words, the vertical force and the frictional force acting along the dismantling direction of the screw 52 are relatively large, so that once the screw 52 is fastened, the loosening is strongly inhibited.

In addition, the upper and lower elasticity of a certain degree is exerted by cutting a portion of the base material 62 to form the respective engaging pieces 70 so that the head 54 is connected to the base material 62 by the fastening of the screw 52. As it gets closer, each engaging piece 70 is gradually pressed in the direction of the base material 62 by the bottom surface of the head 54 of the screw 52 and guided as if the head 54 is pushed out with an equal force to tighten the screw 52. It is possible to suppress the disorientation.

In other words, when tightening the screw 52 using a tool such as a screw driver, in a narrow environment or the like, pressure may be applied in a non-uniform direction such as force not being applied in a straight line parallel with the screw 52 and the shaft is distorted. This often results in the screw 52 being dislodged from the screw hole 64 during fastening.

On the other hand, when the screw 52 is fastened to the base material 62 according to the present invention, at least four or more are symmetrically aligned with each other along the periphery of the screw hole 64 and the screw 52 is arranged by the locking pieces 70 arranged in all directions. ) Is corrected in the correct insertion direction and each locking piece 70 is elastically pressed by the bottom of the head 54 in the direction of the base material 62, through this action, the screw 52 is a screw hole It can be prevented from being twisted by guiding so as to lie in line with the 54, so that the screw 52 can be prevented from being separated from the screw hole 64 when the screw 52 is fastened.

At the same time, the engaging piece 70 according to the present invention has a b-angle inclination of 90 ° or less gradually increasing gradually toward the engagement direction of the screw 52 with respect to the vertex P having the highest height, respectively, while the screw 52 A part of the base material 62 corresponding to the back of the head 54 of the screw 52 is cut and raised so that a larger angle of inclination increases sharply toward the opposite side of the disengaging direction of the disassembly direction of the screw bar. The vertical drag and friction acting in the dismantling direction of the car are greatly increased so that once they are tightened, they are hardly released.

In addition, rather than attaching the hook piece 70 as a separate material and attaching it along the periphery of the screw hole 54 of the base material 62, as described above, a part of the base material 62 is cut and raised to reduce the material cost. Can be devised at the same time.

On the other hand, the present invention described above can have the greatest effect when applied to the same field as the liquid crystal display module, Figure 8 and Figure 9 is a case each applied to the liquid crystal display module as a preferred use example of the present invention It is a figure for following. At this time, the same reference numerals are omitted for the same parts having the same role as the above, and duplicate descriptions are omitted. In particular, the following description is only one of the correct use examples of the present invention. It will be apparent to those skilled in the art that the inventive technical idea can be applied in many different fields.

8 is an exploded perspective view of a liquid crystal display module according to the present invention, and FIG. 9 is a perspective view showing a combined state of a double cover bottom and a shield box from the bottom. The liquid crystal display module according to the present invention is made of synthetic resin or sustil. The support main body 80 having a substantially rectangular frame shape formed of a mold of the back light, the backlight assembly 82 and the liquid crystal panel 92 which are sequentially mounted on the upper surface thereof, and the cover bottom coupled to the rear surface of the support main 80 ( 98) and a top cover 100 which is assembled to the support main 80 and the cover bottom 98 and borders the edge of the liquid crystal panel 92.

In addition, the dual backlight assembly 82 includes a reflector 84 seated on the upper surface of the support main 80, a fluorescent lamp 86 arranged along at least one inner longitudinal direction of the support main 80, and It may be a side light type including a light guide plate 88 seated on the reflecting plate 84 so as to point coplanar with the fluorescent lamp 86, and a plurality of optical sheets 90 interposed thereon, although separate Although not attached to the drawings, unlike the light guide plate 88, a plurality of fluorescent lamps 86 are arranged side by side on an upper side of the reflecting plate 84 seated on the support main 80, and then a plurality of optical sheets on top thereof. It may be a direct type in which 90 is interposed.

At this time, along the at least one side of the liquid crystal panel 92, the driving circuit 96 is connected via the flexible circuit board 94 and folded to cover the back cover 98, and the fluorescent lamp of the backlight assembly 82 is similarly It is common that a predetermined circuit (not shown) for controlling the blinking of the 86 is brought into close contact with the back of the cover bottom 98. Usually, the shield box 102 is screwed to the back of the cover bottom 98 so as to protect them by casing. Combined.

To this end, a plurality of threaded holes 66 penetrate the shield box 102. In the liquid crystal display module according to the present invention, the shield box 102 is the base material for screw coupling described above (see 62 in FIG. 5). In this case, it can be seen that a plurality of engaging pieces 70 protrude along the periphery of each screw hole 66 penetrated through the shield box 102.

That is, in the liquid crystal display module according to the present invention, at least one locking piece 70 protrudes along the periphery of the screw hole 64 of the shield box 102 which is attached to the cover bottom 98 with the screw 58. Characterized in that each of the engaging pieces 70 is preferably at least four or more arranged in a symmetrical turn to maintain the same distance from the center of each threaded hole 64 while maintaining the same height with each other, particularly the highest The angle of inclination of 90 degrees or less is gradually increased toward the engagement direction of the screw 58 with respect to the vertex P which points in height, while the larger a angle inclination rapidly increases as the direction opposite to the engagement direction of the screw 58 is increased. It is characterized in that a portion of the shield box 102 around the screw hole 64 is cut and raised. (See FIG. 7)

Therefore, once the screw 58 is hardly loosened, the shield box 102 may be more stably coupled to the cover bottom 98, and the fastening thereof may be easily performed even by an unskilled person.

The screw fastening base material according to the present invention described above may be referred to as a relatively simple configuration, but the effect is very large, so that even if a small work environment or a small size of the screw requires careful attention, it is easy to fasten the screw. There is an advantage.

That is, the engaging piece formed along the screw hole periphery of the base material according to the present invention guides the insertion direction of the screw to be corrected at the same time and increases the frictional force and the vertical drag so that once the screw is fastened so as not to loosen, and also fastening the screw The screw can be prevented from falling off from the screw hole can be easily and simply performed screw fastening even if not skilled, there is an advantage to greatly improve the reliability of the coupling.

This is suitable for the combination of small and precise elements, such as a liquid crystal display module, it is possible to perform a simple and convenient screw fastening especially when applied to the shield box coupled to the cover bottom.

1 is a perspective view of a combination of a common base material and a screw inserted therein.

Figure 2 is an exploded perspective view of a common base material and a screw inserted into it.

3 is a cross-sectional view taken along the line III-III of FIG.

Figure 4 is a perspective view of the combination of the base material and the screw inserted therein according to the present invention.

5 is an exploded perspective view of a base material and a screw inserted thereto according to the present invention.

6A to 6B are cross-sectional views corresponding to line VI-VI of FIG. 4, respectively, for the mother material and the screw inserted therein according to the present invention.

FIG. 7 is a sectional view taken along the line VII-VII of FIG. 5; FIG.

8 is an exploded perspective view of a liquid crystal display module as an application example of the present invention.

9 is a bottom perspective view of a portion of a liquid crystal display module as an application example of the present invention.

<Description of the symbols for the main parts of the drawings>

52: screw 54: head

56: fastening groove 58: shaft

60: thread 62: the base material

64: screw hole 66: screw groove

68: part 70: locking piece

80: support main 82: backlight assembly

84: reflector 86: fluorescent lamp

88: light guide plate 90: optical sheet

92 liquid crystal panel 94 flexible circuit board

96: drive circuit 98: cover bottom

100: top cover 102: shield box

Claims (8)

As a base material for screwing, which has a loosening prevention function, through which a screw hole penetrates and one side is in contact with the head of the screw, At least one locking piece protruding along the periphery of the screw hole of the one surface in contact with the bottom surface of the screw assembly having a loosening function. The method of claim 1, The at least one locking piece is at least four or more arranged to be symmetrically arranged to maintain the same distance from the center of the screw hole while maintaining the same height, each of the base material for screwing with a loosening prevention function. The method according to claim 1 or 2, wherein The at least one catching piece is characterized in that the portion of the base material corresponding to the back of the head is cut and raised so as to rise at an inclination of 90 ° or less along the engagement direction of the screw with respect to the vertex of the highest point respectively. Base material for screw connection with function. A support main for mounting the backlight assembly and the liquid crystal panel in order; A cover bottom coupled to the support main back surface; A top cover bordering the edge of the liquid crystal panel and coupled to the support main and the cover bottom; In order to protect the printed circuit board connected to the backlight assembly and the liquid crystal panel, a screw is placed on the rear surface of the cover bottom, and at least one screw hole penetrates to the outer surface where the head of the screw is in contact with each other. Liquid crystal display module comprising a shield box, characterized in that at least one locking piece protrudes along the periphery. The method of claim 4, wherein And at least one or more locking pieces are arranged at symmetrical turns to maintain the same height from the center of each screw hole while maintaining the same height. The method of any one of claims 4 or 5, wherein The at least one locking piece is a portion of the outer surface of the shield box corresponding to the rear surface of the head so as to ascend at an inclination of 90 ° or less along the engagement direction of the screw on the basis of the vertex of the highest height, characterized in that the cut up LCD display module. The method of claim 4, wherein The backlight assembly may include a reflection plate mounted on the support main; At least one fluorescent lamp arranged along at least one inner longitudinal direction of the support main body on the reflecting plate; A light guide plate seated on the reflective plate to be flush with the fluorescent lamp; And a side light type including a plurality of optical sheets mounted on the light guide plate. The method of claim 4, wherein The backlight assembly may include a reflection plate mounted on the support main; A plurality of fluorescent lamps arranged side by side on the reflecting plate; And a direct type including a plurality of optical sheets mounted on the fluorescent lamps.