KR20030053983A - Hinge assembly for flat panel display appliance - Google Patents

Abstract

PURPOSE: A hinge device for a video display is provided to prevent a plate of a hinge assembly from being worn caused of a relative rotation using a general used bolt instead of a special hinge shaft, to adjust an inclination angle of a display without using an additional element for restricting a rotation range of a hinge shaft, and to reduce a manufacturing cost. CONSTITUTION: The first movable plate(10) is fixed at the rear surface of a display and has a penetration opening(13). The second fixing plate(20) is connected to a stand of the display and has a penetration opening(23). A hinge shaft(30) is combined with the penetration openings(13,23) and has a head unit. A nut(70) is fixedly combined with a screw at the bottom portion of the hinge shaft(30). The first washer(41) is allocated between the head unit of the hinge shaft(30) and the first movable plate(10). The second washer is allocated between the first movable plate(10) and the second fixing plate(20). The third washer is allocated between the second fixing plate(20) and the nut(70). An elastic washer(51) is allocated between the head unit of the hinge shaft(30) and the nut(70) and applies compression elasticity toward an axile direction.

Description

HINGE ASSEMBLY FOR FLAT PANEL DISPLAY APPLIANCE}

The present invention relates to a hinge device that can adjust the tilting angle of the display in a flat panel type video display device, and in particular, a commercial bolt is used and the structure is simple without the need to separately process the hinge axis, which is a reference axis in which the display is pivoted up and down. And a hinge device configured to be easy to assemble.

Conventionally, one of these types of hinge devices is a hinge device of a video display device such as a portable computer, as shown in Fig. 1, which is fixed to a vertical portion 3b having a hinge shaft insertion hole and a casing body of the video display device. L-shaped mounting plate 3 having horizontal portion 3c to be installed, and chamfered mounting portion 1a fixedly fixed to an upper cover of a casing of an image display device on one side with a flange portion 1b interposed therebetween. ) And a hinge shaft (1) composed of an extension (1c) pivotably fitted through the hinge shaft insertion hole of the mounting plate (3) on the other side. At this time, the chamfered screw part 1c 'is formed in the end side of the extension part 1c.

The hinge device also includes washers 2a; 2b disposed on both sides of the mounting plate, an elastic washer 4 causing axial elasticity, a sleeve member 5 in contact with the elastic washer, a torsion spring 6, It includes a swing range defining washer 7 and a nut 8 having a braking protrusion 7a.

The sleeve member 5 consists of a flange portion 5a in contact with the elastic washer 4 and a tubular portion 5b into which the torsion spring 6 is fitted. One end of the torsion spring has a bent end 6a and is fitted into and fixed to a hole 3a formed in the vertical portion 3b of the mounting plate, and the other end is supported by the braking protrusion 7a of the turning range washer 7. do.

Moreover, since the turning range limited washer 7 is formed with the hole of the shape corresponding to the chamfered shape of the screw part 1c 'of the extension part 1c, the chamfering screw part 1c' is inserted in this hole, When turning the hinge shaft, the turning range is limited to the end 6a of the torsion spring 6, and when turning to the opposite side, the turning protrusion 7a is caught by the other end of the torsion spring to receive an elastic force that resists the turning motion. do.

However, such a hinge device first needs to be chamfered into a special shape for the hinge axis, and therefore, several steps for chamfering including milling and turning must be preceded during the manufacturing process of the hinge device. There was a factor of the increase in manufacturing cost, and it was necessary to manufacture a separate part corresponding to the shape of the chamfered hinge shaft, and there was a problem in design, manufacturing complexity, economy, and assembly, and the relatively soft plate of the hinge assembly rotated relatively. There was a disadvantage that there is much room for wear.

The present invention can use a commercial bolt without the need for using a special hinge shaft of the chamfered form, in order to solve the above-mentioned problems of the prior art, the plate of the hinge assembly is not worn by the relative rotation, and assembled to the chamfered hinge shaft It is possible to adjust the inclination angle of the display device without using a separate part that limits the turning range of the hinge axis, to provide a hinge device that is excellent in the hinge function, good assembly, and reduce the manufacturing cost.

1 is an exploded perspective view showing a hinge device for a video display device of the prior art.

Figure 2 is a perspective view of a hinge device for a video display device according to an embodiment of the present invention, the coil spring member is not installed.

3 is an exploded perspective view of the hinge device of FIG.

4 is a perspective view of a hinge device according to another embodiment of the present invention with the coil spring member installed.

5 is an exploded perspective view of the hinge device of FIG.

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

10: first movable plate

13: through hole of first plate

20: second fixing plate

23: through hole of second plate

30: hinge axis

41: first washer

42: second washer

43: third washer

51; Elastic washers

70; nut

In order to achieve the above object, the present invention is a hinge device for adjusting the inclination angle of the flat display device, which is fixed to the rear of the display device, is connected to the first movable plate formed with a through hole, the stand of the display device, A second fixing plate having a through hole, a hinge shaft coupled to the through holes of the first and second plates, a coupling member fixedly coupled to an end of the hinge shaft, and a head portion of the hinge shaft. A first washer disposed between the first movable plate, a second washer disposed between the first and second plates, a third washer disposed between the second plate and the coupling member, a head portion and a coupling member of the hinge shaft. Provided is a hinge device for a video display device, characterized in that it comprises an elastic washer disposed between and applying axial compressive elasticity.

According to one embodiment of the invention, the first movable plate is further provided with a bent projection on the upper end side of the through hole, the second fixing plate is a bending projection of the first plate on the upper end of the through hole hinge axis It is characterized in that it further comprises a turning guide of a predetermined turning angle range that is moved along a path pivoted to the center.

According to one embodiment of the invention, the first plate has a locking groove is formed in a portion parallel to the hinge axis, one end is fixed to the locking groove of the first plate and the other end is fixed to the fixing hole of the second plate And a coil spring member that provides a turning direction elastic resistance force in the relative rotation between the first plate and the second plate around the hinge axis.

According to one embodiment of the present invention, the hinge shaft is characterized in that the shaft portion has a larger shaft diameter than the shaft portion and the shaft portion formed with a screw portion at one end.

According to one embodiment of the invention, the hinge shaft is characterized in that the commercial bolt.

According to one embodiment of the invention, the coupling member is characterized in that the nut.

According to one embodiment of the invention, the first, second and third washers are characterized in that the flat washer.

According to one embodiment of the invention, the first, second and third washers are characterized in that they are provided with oil-impregnated grooves in the parts in contact with the adjacent elements to prevent abrasion between adjacent elements and to ensure smooth turning movement. .

According to an embodiment of the present invention, at least one of the first plate and the second plate is provided with an oil-impregnated groove at the portion in contact with the adjacent element to prevent abrasion between adjacent elements and to ensure a smooth turning movement. do.

According to one embodiment of the invention, the third washer is characterized in that the fixing washer fixedly coupled to the second plate.

According to one embodiment of the present invention, the fixing washer is provided with one or more fixing protrusions, characterized in that the fixing hole for fixing the fixing protrusion of the fixing washer is formed around the through hole of the second plate.

According to one embodiment of the invention, the elastic washer is characterized in that the washer of the hemispherical shape.

According to one embodiment of the invention, the elastic washer is characterized in that the flange-type elastic washer formed with a contact rim along the circumference.

According to one embodiment of the invention, the elastic washer is characterized in that it is disposed directly adjacent to at least one of the first, second, and third washer.

According to one embodiment of the invention, the elastic washer is disposed between the third washer and the coupling member, the coupling member is characterized in that the washer-type nut.

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

2 is a view showing a state in which a hinge device for a video display device according to an embodiment of the present invention is assembled with the coil spring member excluded. This figure shows only one side of the hinge assembly, the hinge device of the present invention is to install the hinge assembly on only one side as shown, without the need to install the same assembly as the hinge assembly on the side not shown in Figure 2 In addition, the inclination angle of the display device of the image display device can be adjusted.

As shown, the hinge device 100 according to the present invention is fixed to the hinge assembly (A) and the rear surface of the flat display device of the video display device, and the image display device side agent for fixing the hinge assembly (A). A second fixed plate connected to the first movable plate 10 and a stand for supporting the display device on the floor and disposed adjacent to the first movable plate so that the first movable plate can be rotated relative to each other; 20). Moving in the first plate is an expression of the meaning that the first plate can be rotated relative to the second plate, and fixing in the second plate is a relative expression of the expression moving in the first plate. It is an expression of the meaning that the second plate acts as a fixed reference point of rotation when the first plate is rotated about the hinge axis.

Since the relative rotation between the first and the second plate is a fixed support point of the second plate connected to the stand of the image display device, the first plate of the movable first plate is fixed to the hinge assembly coupled to the first and the second plate. The relative rotation is performed with respect to the two plates, and the relative rotation enables the inclination angle of the display device to be adjusted. As will be described later, at this time, the hinge assembly coupled to the first and second plates are firmly adhered to the first and second plates by compressive elasticity applied in the axial direction by the elastic washers, so that their rotational positions are maintained even when they are relatively rotated. Keep it.

3 is an exploded perspective view of the hinge device according to the present invention. According to the drawing, the first plate 10 fixedly coupled to the back of the display device of the video display device has a horizontal plane portion parallel to the rear of the display device and a vertical plane portion perpendicular to the horizontal plane portion, the hinge axis of the vertical plane portion The hinge shaft through hole 13 is inserted.

The second plate 20 connected to the stand of the image display device includes a vertical surface portion parallel to the vertical surface portion of the first plate, and includes a through hole 23 into which the hinge shaft 30 is inserted.

In order to limit the rotation range when the first plate is rotated relative to the second plate about the hinge axis 30, the vertical surface portion of the first plate 10 is bent upwardly through the through hole 13. A protrusion 11 is formed, and the second plate 20 cooperates with the bent stopper protrusion 11 of the first plate 10 above the vertical surface portion to limit the turning range B of the first plate. An arc-shaped stopper member 21 may be formed above the through hole 23. The arc-shaped path is a path along a turning radius of the bent stopper protrusion of the first plate which is rotated relative to the second plate 20 about the hinge axis.

The hinge shaft 30, which can use a commercially available screw, is coupled through the through holes of the first and second plates, and finally, the nut 70 as a coupling member is fastened to the screw portion at the end of the hinge shaft to complete the hinge assembly. do. The hinge shaft is composed of a head portion and a cylindrical coupling portion as a shaft portion having a smaller shaft diameter, and a screw portion is formed on the end side of the coupling portion, and the nut is screwed to the screw portion.

The hinge shaft used for the hinge device of the present invention is a conventional hinge shaft that requires chamfering such as milling, turning, and the like by using a commercial bolt composed of a hexagonal head portion 30a and a screw portion 30b. The complicated and expensive manufacturing process of parts can be omitted, which is economical and easy to manufacture.

Between the head portion of the hinge shaft, the first plate 10, the second plate 20 and the nut 70 each ensures close contact with both contact members, increases the frictional force and prevents wear of adjacent contact members. First, second and third washers 41; 42; 43 are disposed to reduce. The first, second and third washers (41; 42; 43) may be flat washers and have oil impregnation holes (41a; 42a) to ensure wear protection and smooth swivel movement in the areas in contact with adjacent elements. (The oil impregnation hole of the third washer 43 is not shown). Such oil-impregnated holes may be installed anywhere other than the first, second and third washers where frictional contact between adjacent elements occurs.

As described above, since the first plate 10 is relatively rotatable relative to the second plate 20, some parts of the hinge assembly rigidly coupled to the first and second plates are subject to considerable wear, In particular, since the second plate 20 serving as a support point for relative rotation is made of a soft material as compared with the washers disposed adjacent to each other, it is necessary to prevent wear of the through hole portion.

To this end, the third washer 43 may be configured as a fixed washer fixedly coupled to the second plate. For fixing to the second plate 10, the third washer 43 is formed with a bending protrusion 43a around the circumference, and the second plate 10 has a fixing hole 25a into which the bending protrusion 43a is fitted. It is formed around the through hole 23. Since the bending protrusion and the fixing hole need only correspond to each other, the number and position thereof can be freely changed.

At an appropriate position between the head of the hinge shaft and the nut 70, an elastic washer 51 for applying axial compression elasticity to the hinge assembly is disposed. In this case, the elastic washer is formed in a substantially hemispherical or disc shape, and the compression force of the nut causes the compression elasticity in the hinge axis direction to securely maintain the engagement of the hinge assembly.

According to a preferred embodiment of the invention, this elastic washer is arranged such that the curvature 51a is in contact with the first washer between the first washer 41 and the first plate 10. The elastic washer 51 may be disposed at any position because only the axial compression elasticity is applied. For example, when the second washer 42 or the third washer 43 is installed on both sides, and the third washer 43 is a fixed washer fixedly coupled to the second plate, the nut 70 is a washer. It is preferable that it is a washer-type nut integrally formed.

4 is a perspective view of a hinge device according to another embodiment of the present invention, in which a spring member is installed, unlike FIGS. 2 and 3, and FIG. 5 is an exploded perspective view of the hinge device of FIG. 4. As shown, the coil spring member 60 useful for adjusting the inclination angle of the large display device in the direction of the nut 70 from the second plate 20 can be provided. This is because, in the case of a large display device having a heavy weight, the hinge assembly may not be firmly held on the first and second plates only by the tightening force of the nut and the compressive elastic force by the elastic washer. When rotating (that is, adjusting the inclination angle of the display device), it causes elastic resistance in the turning direction to effectively support the heavy display device.

For installation of the coil spring member 60, the first plate 10 is provided with a locking groove 16 in a horizontal surface portion perpendicular to the vertical surface portion and parallel to the hinge axis direction, the coil spring in the locking groove 16 One end 60b of the member 60 is fixed. The other end 60a of the coil spring member is provided to engage the fixing hole 25b of the second plate. At this time, the fixing hole 25b of the second plate is intended to be simultaneously coupled to the bending protrusion of the fixing washer.

While various embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications are possible within the understanding of those skilled in the art.

According to the above-described configuration, the present invention can use a commercial bolt without using the special hinge shaft of the chamfered form, in order to solve the problems of the prior art described above, so that the plate of the hinge assembly is not worn by the relative rotation, It is assembled to the chamfered hinge shaft to adjust the inclination angle of the display device without using a separate part that restricts the turning position of the hinge shaft, and provides a hinge device that has excellent hinge function, good assembly ability, and reduces manufacturing cost. do.

Claims (15)

A hinge device for adjusting an inclination angle of a flat panel display device, the hinge device being fixed to a rear surface of a display device, the first movable plate having a through hole formed thereon, the second fixing plate connected to a stand of the display device, and having a through hole formed therein; A hinge shaft coupled to the through holes of the first and second plates and having a head portion, a coupling member fixedly coupled to an end of the hinge shaft, and a first washer disposed between the head portion of the hinge shaft and the first movable plate; And a second washer disposed between the first and second plates, a third washer disposed between the second plate and the coupling member, and disposed between the head portion of the hinge shaft and the coupling member to apply axial compression elasticity. Hinge device for a video display device comprising an elastic washer. According to claim 1, wherein the first movable plate is further provided with a bent projection on the upper end side of the through hole, the second fixing plate is a bent projection of the first plate on the upper end side of the through hole pivot about the hinge axis The hinge device for a video display device, characterized in that it further comprises a turning guide of a predetermined turning angle range moved along the path. According to claim 1, The first plate has a locking groove is formed in a portion parallel to the hinge axis, one end is fixed to the locking groove of the first plate and the other end is fixed to the fixing hole of the second plate, the hinge And a coil spring member for providing a resilient direction of rotational resistance during relative rotation between the first plate and the second plate about the axis. The hinge device for a video display device according to any one of claims 1 to 3, wherein the hinge shaft comprises a head portion having a larger shaft diameter than the shaft portion and a shaft portion having a screw portion at one end thereof. The hinge device for a video display device according to claim 4, wherein the hinge shaft is a commercial bolt. The hinge device for a video display device according to any one of claims 1 to 3, wherein the coupling member is a nut. 4. The hinge device according to any one of claims 1 to 3, wherein the first, second and third washers are flat washers. 8. The video display device of claim 7, wherein the first, second, and third washers are provided with oil-impregnated grooves in the parts in contact with the adjacent elements to prevent abrasion between adjacent elements and to ensure smooth turning movement. Hinge device for 4. An oil-impregnated groove according to any one of claims 1 to 3, wherein at least one of the first plate and the second plate has an oil-impregnated groove in the portion in contact with the adjacent element to prevent abrasion between adjacent elements and to ensure smooth pivotal movement. A hinge device for a video display device, characterized in that. 8. The hinge device of claim 7, wherein the third washer is a fixed washer fixedly coupled to the second plate. The hinge device of claim 10, wherein the fixing washer includes one or more fixing protrusions, and a fixing hole for fixing the fixing protrusion of the fixing washer is formed around the through hole of the second plate. The hinge device for a video display device according to any one of claims 1 to 3, wherein the elastic washer is a substantially hemispherical washer. The hinge device for a video display device according to claim 12, wherein the elastic washer is a flange type elastic washer having a contact rim along a circumference thereof. 4. The hinge device according to any one of claims 1 to 3, wherein the elastic washer is disposed immediately adjacent to at least one of the first, second, and third washers. 4. The hinge device according to any one of claims 1 to 3, wherein the elastic washer is disposed between the third washer and the engaging member, and the engaging member is a washer nut.