KR20150072825A - Structure for fixing pem nut - Google Patents

Abstract

The present invention relates to a PEM nut installation structure for a flat display device to have improved rigidity, wherein a screw thread is formed on the outer circumference of a PEM nut body to be engaged with a rigidity increase nut or a guide part protrudes from the body in order to improve the rigidity of the PEM nut. Therefore, the PEM nut installation structure maintains a strong binding force by preventing the escape of the PEM nut against an excessive load or a strong external impact to a system board.

Description

Pam nut installation structure {Structure for fixing pem nut}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a mounting structure for a flat-panel display, and more particularly, to a mounting structure for a flat-panel display.

2. Description of the Related Art [0002] In recent years, as the society has become a full-fledged information age, a display field for processing and displaying a large amount of information has rapidly developed, and a variety of flat display devices have been developed Be in the spotlight.

Specific examples of such a flat panel display device include a liquid crystal display device (LCD), a plasma display panel (PDP), a field emission display (FED) Devices such as an electroluminescence display device (ELD) and an organic light emitting diode (OLED). These flat panel display devices have excellent performance in reducing the thickness, weight, and power consumption of a conventional cathode ray tube : CRT).

Such a flat panel display device has advantages of high image quality, ultra-thinness, light weight, wide viewing angle, and favorable size.

Since such a flat panel display device is designed to be thin, various structures such as a system board must be fixed to the back surface. To this end, a plurality of fixing parts for fixing various structures are provided on the back surface of the liquid crystal display device.

Here, a PEM nut can be used as a method for forming the fixing portion. Recently, a Pam nut which can withstand a load or impact of a structure while maintaining a stronger fastening force is required.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a Pam nut capable of maintaining a strong fastening force by preventing a detachment of a Pam nut against an excessive load or a strong external impact of a structure coupled to the back surface of a flat panel display The purpose.

In order to achieve the above object, according to the present invention, there is provided a pam nut mounting structure for forming a through hole in a press water and preventing the pam nut from being press-fitted into the through hole, A cylindrical body; A pressure plate extending in an appropriate radius around the outer circumference of the upper end of the body; A circumferential groove formed between the pressure plate and the body; A thread formed on an outer circumferential surface of the body adjacent to the peripheral groove; And a rigid reinforcing nut fastened to the thread.

According to another aspect of the present invention, there is provided a Pam nut mounting structure for forming a through hole in a press material and preventing a Pam nut from being inserted into the through hole, the Pam nut mounting structure comprising: a cylindrical body having a female screw in an inner diameter; A pressure plate extending in an appropriate radius around the outer circumference of the upper end of the body; A circumferential groove formed between the pressure plate and the body; And a guide portion protruding from an outer circumferential surface of the body, wherein the through hole includes a guide hole corresponding to the guide portion.

At this time, the thread is formed on the outer circumferential surface of the body corresponding to the height of the rigid reinforcing nut, and the rigid reinforcing nut is closely attached to the press.

The guide portion has a shape gradually decreasing in width from the outer circumferential surface of the body adjacent to the circumferential groove toward the other side opposite to the one side of the circumferential groove of the body, And an inclined surface whose width decreases along the longitudinal direction of the body from the edge surface.

In addition, the edge surface is formed in close contact with the press water, and the edge surface has a trapezoidal shape in which the width increases as the distance from the body increases.

The edge portion is semi-cylindrical, and at least two edge portions are provided radially with respect to a center line of the body.

Further, the Pam nut is inserted through the through hole, and then rotated by 45 degrees so as to position the guide portion and the guide hole so as to be offset from each other, and then press-in. The press water is a cover bottom of the flat panel display device, An embossment is formed on the back surface of the cover bottom to include a coupling hole, and the inner periphery of the peripheral groove is fitted and fixed to the coupling hole.

As described above, according to the present invention, a thread is formed on the outer circumferential surface of the body of the Pam nut, and the rigid reinforcing nut is fastened or the guide part is protruded from the body, whereby the Pam nut according to the embodiment of the present invention There is an effect that the rigidity can be improved.

Therefore, it is possible to prevent the separation of the Pam nuts from the excessive load of the system board or the strong external impact, and it is possible to maintain a stronger fastening force.

1 is a perspective view schematically showing a flat panel display according to an embodiment of the present invention.
2 is a perspective view schematically showing a state in which a system board is assembled to a cover bottom.
FIG. 3A is a perspective view schematically showing a Pam nut according to a first embodiment of the present invention; FIG.
3B is a cross-sectional view taken along the line III-III in FIG. 3A;
3C is a perspective view schematically showing a fastening structure of a Pam nut and a rigid reinforcing nut.
FIG. 4A is a perspective view schematically showing a Pam nut according to a second embodiment of the present invention; FIG.
4B is a cross-sectional view taken along the line IV-IV in FIG. 4A.
Fig. 4c is a front view schematically showing the engaging hole of the emboss of the cover bottom. Fig.
FIG. 4D is a perspective view schematically showing a state in which a Pam nut according to a second embodiment of the present invention is press-fitted into a coupling hole of an emboss of a cover bottom. FIG.
5A is a perspective view schematically showing another configuration example of the Pam nut according to the second embodiment of the present invention.
Fig. 5B is a front view schematically showing the configuration of a coupling hole of the embossment corresponding to Fig. 5A. Fig.
FIG. 6A is a perspective view schematically showing another configuration example of the Pam nut according to the second embodiment of the present invention; FIG.
Fig. 6B is a front view schematically showing the configuration of the engaging hole of the embossment corresponding to Fig. 6A. Fig.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view schematically showing a flat panel display device according to an embodiment of the present invention, and FIG. 2 is a perspective view schematically showing a state where a system board is assembled to a cover bottom.

The flat panel display 100 according to the embodiment of the present invention includes a display panel 110 for largely implementing an image, a front cover 120 for accommodating the display panel 110, a rear cover 130 And a system board 140 as shown in FIG.

Here, the display panel 110 may be a liquid crystal display device (LCD), a plasma display panel (PDP), a field emission display (FED) An organic electroluminescence display device (ELD), and an organic light emitting diode (OLED). The organic electroluminescence display device is advantageous for moving picture display and has a high contrast ratio. I will explain the device as an example.

The display panel 110 includes a liquid crystal panel (not shown), a backlight unit (not shown), a guide panel (not shown), a top cover (not shown), and a cover bottom 150.

In this case, the top cover (not shown) may be referred to as a case top or a top case, and a guide panel (not shown) may be referred to as a support main or main support or a mold frame. Also called.

On the other hand, a flat display device having the above-described structure can eliminate a top cover (not shown) in order to realize a lightweight and thin liquid crystal display device which is recently required. The liquid crystal display device can be made light and thin by eliminating the top cover (not shown), and the process can be simplified.

In addition, the elimination of a top cover (not shown) made of a metal material can reduce the process cost.

Here, various structures may be fixed to the back surface of the display panel 110. The structure receives an image or voice signal input from the outside, and transmits the image or voice signal to a liquid crystal panel or a speaker (not shown) An inverter (not shown) for driving a light source of an A / D (analog / digital) board (not shown), a backlight unit (not shown), an OSD (on screen display) A system board 140 on which components such as a speaker (not shown) for outputting a voice signal to be input, an adapter (not shown) for supplying the entire power of the liquid crystal display device, and various cables (not shown) .

A screw through hole 145 is formed in the system board 140. The cover bottom 150 supporting the lower surface of the liquid crystal display device is provided with embo : 210).

The concrete shape of the embossment 210 includes a columnar surface 210a forming an inner hollow portion protruding in a vertical direction from the back surface of the cover bottom 150, a horizontal surface 210b extending in the inner horizontal direction from the upper end of the columnar surface 210a, (See FIG. 3B) so that the fastening screws 160 are inserted into the center of the first and second guide grooves 210a and 210b.

In addition, a PEM nut 220 is protruded from the emboss 210 in the coupling hole 210c (see FIG. 3B).

The Pam nut 220 is formed of a cylindrical body 221 (see FIG. 3A). A female thread 227a (see FIG. 3A) is formed on the center inner circumferential surface of the cylindrical body 221 so as to guide the fastening screw 160.

Accordingly, the screw through-hole 145 of the system board 140 is positioned on the upper side of the Pam nut 220, and the screw hole 160 is penetrated by the fastening screw 160.

Here, the emboss 210 and the Pam nut 220 directly fix the system board 140 to the backside of the cover bottom 150, while the system board 140 does not directly contact the cover bottom 150 This is to prevent electrical signals flowing through the system board 140 from coming into contact with the cover bottom 150 to be short-circuited.

The fastening screw 160 inserted into the Pam nut 220 and the screw penetration hole 145 includes a shaft 161 and a head 163 provided at an end of the shaft 161, similar to the shape of a general fastening screw.

At this time, along the outer surface of the shaft 161, male threads corresponding to female threads (not shown) formed on the inner surface of the Pam nut 220 are formed. The fastening screw is inserted through the screw through hole 145 of the system board 140 from the end of the shaft 161 and inserted into the pom nut 220 formed in the embossment 210 of the cover bottom 150.

The screw through holes 145 formed in the system board 140 are formed on at least four corners of the system board 140 so that the system board 140 can be more stably fixed to the back face of the cover bottom 150 desirable.

3A) is formed on the outer peripheral surface of the body 221 (see FIG. 3A) to fasten the rigid reinforcing nut 229 (see FIG. 3A) And a guide portion 231 protruding from the body 221 (see FIG. 4A) (see FIG. 4A).

Accordingly, the rigidity of the Pam nut 220 according to the embodiment of the present invention is improved, and the separation of the Pam nut 220 from the excessive load of the system board 140 or a strong external impact can be prevented. Therefore, a firmer fastening force can be maintained. Hereinafter, each embodiment will be described in more detail.

The system board 140 is positioned at the rear of the display panel 110. The display panel 110 and the system board 140 are finally modularized through the front cover 120 and the rear cover 130, The front cover 120 is configured to display an image implemented by the display panel 110 by opening a front surface of the front cover 120,

The rear cover 130 is positioned at the rear of the display panel 110 and the system board 140 and has four sides in a rectangular shape,

The display panel 110 and the system board 140 are integrally combined with the front cover 120 and the rear cover 130 at front and rear sides, respectively.

This completes the flat panel display.

FIG. 3A is a perspective view schematically showing a Pam nut according to a first embodiment of the present invention, and FIG. 3B is a sectional view taken along the line III-III in FIG. 3A.

And FIG. 3C is a perspective view schematically showing a fastening structure of the Pam nut and the emboss.

As shown in the figure, the Pam nut 220 includes a cylindrical body 221, a pressure plate 223 having an appropriate radius extended around the outer circumference of the upper end of the body 221 at one end in the longitudinal direction of the body 221, And a circumferential groove 225 formed between the pressure plate 223 and the body 221.

The cylindrical body 221 includes a through hole 227 formed through the other end of the cylindrical body 221 on which the pressure plate 223 is not formed and having an internal thread 227a.

The pneumatic nut 220 is press-fitted into the embossment 210 of the cover bottom 150 so that the inner circumference of the circumferential groove 225 is fitted to the coupling hole 210c of the embossment 210 and fixed.

The plurality of threads 229a are formed on the outer circumferential surface of the body 221 adjacent to the circumferential groove 225 so as to engage with the rigid reinforcing nut 229b.

The rigidity reinforcing nut 229b has the same outer shape as a normal nut and is formed on the inner circumferential surface of the spiral groove 229c which mates with the thread 229a formed on the outer peripheral surface of the Pam nut 220. [

At this time, the threaded portion 229a formed on the outer circumferential surface of the body 221 may be formed entirely along the longitudinal direction of the body 221, but may be formed on the outer peripheral surface of the body 221 in correspondence with the height of the rigid reinforcing nut 229b. .

If a thread 229a is formed on the entire body 221, an unnecessary space may be formed between the thread 229a and the foreign matter in the region where the thread 229a is not fastened to the stiffening nut 229b.

As described above, the Pam nut 220 according to the first embodiment of the present invention is formed by forming the thread 229a on the outer peripheral surface of the body 221 and fastening the stiffness enhancing nut 229b to the thread 229a thereof, The rigidity of the nut 220 is improved.

That is, even if an excessive load or a strong external impact of the system board (140 in FIG. 2) is applied to the Pam nut 220, the load or external shock applied to the Pam nut 220 is transmitted to the Pam nut 220 and the stiffening nut 229b Or the reaction force is generated by the rigid reinforcing nut 229b, so that the stiffness of the Pam nut 220 is improved.

Particularly, by forming the screw thread 229a on the outer peripheral surface of the body 221 adjacent to the peripheral groove 225 and tightening the stiffness strengthening nut 229b through the thread 229a, The rigid reinforcing nut 229b is brought into close contact with the embossment 210 of the cover bottom 150 so that the rigid reinforcing nut 229b is in close contact with the embossment 210 of the system board 150 The load and the external impact are distributed evenly to the embossment 210 of the cover bottom 150 so that the rigidity of the Pam nut 220 is further improved.

Accordingly, it is possible to prevent the disengagement of the Pam nut 220 from occurring, thereby maintaining a stronger fastening force.

Here, the Pam nut 220 according to the first embodiment of the present invention is formed by pressing the rigid reinforcing nut 229b into the fitting hole 210c of the embossment 210 of the cover bottom 150, It is necessary to have a separate structure corresponding to the structure for enhancing the rigidity of the Pam nut 220 in the coupling hole 210c of the embossment 210 of the cover bottom 150 while improving the rigidity of the Pam nut 220 , The manufacturing process is simplified.

As described above, in the Pam nut 220 according to the first embodiment of the present invention, the threaded portion 229a is formed on the outer circumferential surface of the body 221, and the stiffness enhancing nut 229b corresponding to the threaded portion 229a The rigidity of the Pam nut 220 is improved and it is possible to prevent the disconnection of the Pam nut 220 from occurring due to an excessive load of the system board (140 in FIG. 2) or a strong external impact.

Therefore, a firmer fastening force can be maintained.

4A is a perspective view schematically showing a Pam nut according to a second embodiment of the present invention, and FIG. 4B is a sectional view taken along the line IV-IV in FIG. 4A.

4C is a front view schematically showing a coupling hole of the embossment of the cover bottom, FIG. 4D is a perspective view schematically showing a state in which the pam nut according to the second embodiment of the present invention is press- to be.

5A is a perspective view schematically showing another configuration example of the Pam nut according to the second embodiment of the present invention, FIG. 5B is a front view schematically showing the configuration of the engagement hole of the embossment corresponding to FIG. 5A, FIG. 6A is a perspective view schematically showing another configuration example of the Pam nut according to the second embodiment of the present invention, and FIG. 6B is a front view schematically showing the configuration of the engagement hole of the embossment corresponding to FIG. 6A.

In order to avoid redundant explanations, the same parts as those of the first embodiment described above are denoted by the same reference numerals, and only the characteristic contents described above in the second embodiment will be described.

As shown in the figure, the Pam nut 220 includes a cylindrical body 221, a pressure plate 223 having an appropriate radius extended around the outer circumference of the upper end of the body 221 at one end in the longitudinal direction of the body 221, And a circumferential groove 225 formed between the pressure plate 223 and the body 221.

The cylindrical body 221 includes a through hole 227 formed through the other end of the cylindrical body 221 on which the pressure plate 223 is not formed and having an internal thread 227a.

The pneumatic nut 220 is press-fitted into the embossment 210 of the cover bottom 150 so that the inner circumference of the circumferential groove 225 is fitted to the coupling hole 210c of the embossment 210 and fixed.

Here, the Pam nut 220 according to the second embodiment of the present invention is characterized in that the guide part 231 is protruded from the outer circumferential surface of the body 221.

The guide portion 231 gradually decreases in width from the outer circumferential surface of the body 221 adjacent to the circumferential groove 225 toward the other side, and has an isosceles triangular structure in cross section.

That is, the guide portion 231 has an edge surface 231a projecting perpendicularly to the body 221 from the body 221 adjacent to the peripheral groove 225 and an edge surface 231b extending from the edge surface 231a in the longitudinal direction of the body 221 And an inclined surface 231b whose width is reduced.

Although four guide portions 231 are shown protruding from the outer circumferential surface of the body 221 in a radial direction with respect to the center line of the body 221, it is preferable that at least two guide portions 231 are provided in different directions. It is not limited.

As described above, according to the second embodiment of the present invention, since the guide portion 231 is protruded from the outer surface of the body 221, the rigidity of the Pam nut 220 .

That is, even if excessive load or strong external impact of the system board (140 in FIG. 2) is applied to the Pam nut 220, the load applied to the Pam nut 220 or the external impact is transmitted to the Pam nut 220 and the guide unit 231, Or the reaction force is generated by the guide portion 231, the rigidity of the Pam nut 220 is improved.

Particularly, since the guide portion 231 is formed so as to protrude perpendicularly from the body 221 from the body 221 adjacent to the circumferential groove 225, the edge surface 231a of the guide portion 231 is formed to protrude from the surface of the cover bottom 150 The edge surface 231a of the guide portion 231 is brought into close contact with the embossment 210 of the cover bottom 150 so that the excessive load of the system board (140 in FIG. 2) Or the external impact is distributed even to the embossment 210 of the cover bottom 150, the rigidity of the Pam nut 220 is further improved.

Accordingly, it is possible to prevent the disengagement of the Pam nut 220 from occurring, thereby maintaining a stronger fastening force.

The structure of the coupling hole 210c formed in the embossment 210 of the cover bottom 150 according to the second embodiment of the present invention has to be changed, The coupling hole 210c formed in the embossment 210 of the cover bottom 150 may be inserted into the coupling hole 210c so that both the body 221 and the guide portion 231 of the Pam nut 220 can pass through. And a guide hole 210d corresponding to the guide portion 231 is further provided at the peripheral portion.

Therefore, the Pam nut 220 according to the second embodiment of the present invention penetrates through the coupling hole 210c formed in the embossment 210 of the cover bottom 150, It is preferable that the guide part 231 of the Pam nut 220 and the guide hole 210d of the coupling hole 210c are positioned to be shifted from each other by rotating the Pam nut 220 by about 45 degrees as shown in FIGS.

5A, the guide portion 231 according to the second embodiment of the present invention has a trapezoidal shape in a planar shape in which the width of the edge surface 231a increases from the body 221 The coupling hole 210c formed in the emboss 210 of the cover bottom 150 and the guide hole 210d formed in the peripheral portion of the coupling hole 210c may have a trapezoidal shape as shown in FIG. As shown in FIG.

6A, the engaging hole 210c formed in the embossed portion 210 of the cover bottom 150 may also be formed in a semi-cylindrical shape as shown in FIG. 6A. Alternatively, as shown in FIG. 6B, The guide hole 210d formed in the peripheral portion of the guide member 210c may have a semicircular shape.

As described above, in the Pam nut 220 according to the second embodiment of the present invention, the guide part 231 is protruded from the outer surface of the body 221, so that the stiffness of the Pam nut 220 is improved, It is possible to prevent the separation of the Pam nuts 220 from the excessive load or strong external impact of the nuts (140 in Fig. 2).

Therefore, a firmer fastening force can be maintained.

The present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

210: Emboss 210c (coupling hole)
220: Pam Nut
221: Body
223: Platen
225: circumferential groove
227: through hole (227a: female thread)
229a:
229b: Stiffening nut

Claims (12)

Wherein a through hole is formed in the press water and a Pam nut is press-fitted into the through hole to prevent the Pam nut from being separated,
The Pam nut includes a cylindrical body having an internal thread formed therein;
A pressure plate extending in an appropriate radius around the outer circumference of the upper end of the body;
A circumferential groove formed between the pressure plate and the body;
A thread formed on an outer circumferential surface of the body adjacent to the peripheral groove;
The rigid reinforcing nut fastened to the thread
Pam nut installation structure including.
Wherein a through hole is formed in the press water and a Pam nut is press-fitted into the through hole to prevent the Pam nut from being separated,
The Pam nut includes a cylindrical body having an internal thread formed therein;
A pressure plate extending in an appropriate radius around the outer circumference of the upper end of the body;
A circumferential groove formed between the pressure plate and the body;
And a guide portion protruding from the outer peripheral surface of the body
Wherein the through hole includes a guide hole corresponding to the guide portion.
The method according to claim 1,
Wherein the thread is formed on an outer peripheral surface of the body corresponding to a height of the rigid reinforcing nut.
The method according to claim 1,
Wherein the rigid reinforcing nut is in close contact with the press water.
3. The method of claim 2,
Wherein the guide portion has a shape in which the width gradually decreases from the outer peripheral surface of the body adjacent to the peripheral groove toward the other side opposite to the one side of the body formed with the peripheral groove.
6. The method of claim 5,
Wherein the guide portion comprises an edge surface vertically protruding from the body adjacent to the peripheral groove and an inclined surface decreasing in width along the longitudinal direction of the body from the edge surface.
The method according to claim 6,
And the edge surface is in close contact with the press water.
The method according to claim 6,
Wherein the edge surface has a trapezoidal shape in a planar shape in which the width increases as the body is further away from the body.
3. The method of claim 2,
Wherein the edge portion has a semi-cylindrical shape.
3. The method of claim 2,
Wherein the at least two edge portions are provided radially with respect to a center line of the body.
3. The method of claim 2,
Wherein the Pam nut is inserted through the through hole and rotated by 45 degrees so that the guide portion and the guide hole are positioned to be offset from each other, and then press-fit.
3. The method according to one of claims 1 and 2,
Wherein the press water is a cover bottom of the flat display device, an embossed shape including a fitting hole is formed on a back surface of the cover bottom, and an inner circumference of the circumferential groove is fitted and fixed to the fitting hole.

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