KR100489791B1 - Hinge assembly for flat panel display appliance - Google Patents

Abstract

The present invention relates to a hinge device for adjusting the tilt angle of a flat display device, the hinge device comprising: a first movable plate fixed to a rear surface of a display device and having a through hole; a second fixed plate connected to a stand of the display device, A hinge shaft having a head portion, a coupling member fixedly coupled to a distal end of the hinge shaft, and a second movable plate coupled to the head portion of the hinge shaft and the first movable plate, First and second fixing washers fixedly coupled to both sides of the through-hole of the first plate, and third and fourth fixing washers fixedly coupled to both sides of the through-hole of the second plate, And at least one of the second, third, and fourth fixed washers is an elastic washer for applying axial compression elasticity.

Description

[0001] HINGE ASSEMBLY FOR FLAT PANEL DISPLAY APPLIANCE [0002]

The present invention relates to a hinge apparatus capable of adjusting a tilting angle of a display in a flat panel type image display apparatus. More particularly, the present invention relates to a hinge apparatus which uses a commercial bolt without a separate hinge axis, And a hinge device configured to be easily assembled.

1, a hinge device of a video display device such as a portable computer is provided with a vertical portion 3b having a hinge shaft insertion hole and a fixing portion 3b fixed to a casing main body of the image display device. Shaped mounting plate 3 having a horizontal portion 3c to be installed and a chamfered mounting portion 1a (see FIG. 1) fixedly provided on one side of the upper cover of the casing of the image display device with the flange portion 1b interposed therebetween And an extension 1c which is pivotably fitted on the other side of the hinge shaft 1 through a hinge shaft insertion hole of the mounting plate 3. [ At this time, a chamfered screw portion 1c 'is formed on the end side of the extended portion 1c.

The hinge device further includes a washer 2a, 2b disposed on both sides of the mounting plate, an elastic washer 4 causing axial elasticity, a sleeve member 5 contacting the elastic washer, a torsion spring 6, A swivel range limiting washer 7 having a braking projection 7a, and a nut 8. [

The sleeve member 5 is composed of a flange portion 5a which contacts the elastic washer 4 and a tubular portion 5b into which the torsion spring 6 is fitted. The other end of the torsion spring is fixed to the braking projection 7a of the swivel range limiting washer 7 and the other end of the torsion spring is engaged with the braking projection 7a of the swing range limiting washer 7, do.

The swivel range-defining washer 7 is formed with a hole having a shape corresponding to the chamfered shape of the threaded portion 1c 'of the extended portion 1c. Since the chamfered threaded portion 1c' is inserted into the hole, The swing range is limited until the braking protrusion 7a reaches the end 6a of the torsion spring 6 when the hinge shaft is turned. When the braking protrusion 7a swings to the opposite side, it is caught by the other end of the torsion spring, do.

However, such a hinge device needs to be chamfered in a special form with respect to the hinge axis. Therefore, during the manufacturing process of the hinge device, various steps for chamfering including milling and turning must be preceded, There has been a factor of increasing the manufacturing cost and there has been a problem in manufacturing complexity, economical efficiency and assemblability because of the necessity of manufacturing a separate part corresponding to the shape of the hinge shaft subjected to the chamfering process. In the hinge assembly, There is a lot of possibility that the abrasion will occur.

In order to solve the problems of the above-described conventional techniques, the present invention can use a commercially available bolt without using a special hinge shaft of a beveled shape, prevent the plate in the hinge assembly body from being worn by relative rotation, The present invention provides a hinge device capable of adjusting the inclination angle of a display device without using a separate component for limiting the turning degree of the hinge axis, having excellent hinge function, good assembling property, and reducing manufacturing cost.

In order to achieve the above object, the present invention provides a hinge device for adjusting the inclination angle of a flat display device, the hinge device comprising: a first movable plate fixed to a rear surface of a display device, A hinge shaft having a head portion; a coupling member fixedly coupled to a distal end of the hinge shaft; and a second fixing plate having a through hole formed in the head portion of the hinge shaft, First and second fixed washers fixedly coupled to both sides of the through-hole of the first plate, third and fourth fixtures fixedly coupled to both sides of the through-hole of the second plate, Wherein at least one of the first, second, third, and fourth fixed washers is an elastic washer for applying axial compression elasticity. It provides support device.

According to an embodiment of the present invention, the first movable plate further includes a bending protrusion at the upper end of the through-hole, and the second fixing plate has a bending protrusion of the first plate at the upper end of the through- Further comprising a turning guide having a predetermined turning angle range which is moved along a path pivoted to the center.

According to an embodiment of the present invention, the first plate has a latching groove formed in a portion parallel to the hinge axis, one end is fixed to the latching groove of the first plate, and the other end is fixed to the fixing hole of the second plate And a coil spring member which provides a rotational resilience force in a relative rotation between the first plate and the second plate about the hinge axis.

According to an embodiment of the present invention, the first, second, third, and fourth stationary washers have at least one fixing protrusion, and the fixing protrusions of the stationary washer are provided around the through-holes of the first and second plates And a fixing hole to be fixed is formed.

According to an embodiment of the present invention, the hinge shaft includes a head portion having a larger diameter than a shaft portion, and a shaft portion having a threaded portion formed at one end thereof.

According to an embodiment of the present invention, the hinge shaft is a commercial bolt.

According to an embodiment of the present invention, the coupling member is a nut.

According to an embodiment of the present invention, the first washer is a flat washer.

According to an embodiment of the present invention, the first washer includes an oil-impregnated groove for preventing abrasion between adjacent elements at a portion contacting the adjacent element and ensuring a smooth orbital movement.

According to an embodiment of the present invention, at least one of the stationary washer includes an oil impregnated groove for preventing abrasion between adjacent elements at a portion contacting with an adjacent element and ensuring smooth rolling movement.

According to an embodiment of the present invention, the elastic washer is characterized by being a substantially hemispherical washer having a fixing protrusion.

According to an embodiment of the present invention, the elastic washer is a fourth fixing washer adjacent to the coupling member, and the coupling member is a washer-shaped nut.

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

FIG. 2 is a view illustrating 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 removed. The hinge device of the present invention does not have to be provided with the same assembly as the hinge assembly on the side not shown in FIG. 2, but a hinge assembly is provided on only one side as shown in the figure It is also possible to adjust the tilt angle of the display device of the image display device.

As shown in the figure, the hinge device 100 according to the present invention includes a hinge assembly A, a display device fixedly attached to a rear surface of a flat display device of an image display device, and adapted to fix the hinge assembly A, A first movable plate 10 and a second fixed plate connected to a stand for supporting the display device at the floor and disposed adjacent to the first movable plate so that the first movable plate can be relatively rotated, 20). The term " operation in the first plate " means that the first plate can be rotated relative to the second plate. In the second plate, " fixation " 1 < / RTI > means that the second plate acts as a fixed reference point of revolution when the plate is rotated about the hinge axis.

Since the relative rotation between the first and second plates constitutes a fixed fulcrum for the second plate connected to the stand of the image display device, the first plate, which is movable along the axis of the hinge assembly coupled to the first and second plates, 2 plate, and the inclination angle of the display device can be adjusted by this relative rotation. As will be described later, the hinge assemblies coupled to the first and second plates are pressed elastically in the axial direction by the elastic washers and tightly contact with the first and second plates. Therefore, even if the hinge assemblies are relatively rotated, .

3 is an exploded perspective view of a hinge apparatus according to the present invention. The first plate 10 fixedly coupled to the rear surface of the display device of the image display device has a horizontal surface portion parallel to the rear surface of the display device and a vertical surface portion perpendicular to the horizontal surface portion, And a hinge shaft through-hole (13) into which the hinge shaft is inserted.

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

In order to limit the range of rotation of the first plate 10 relative to the second plate about the hinge axis 30, the vertical plate of the first plate 10 is provided with a bending stopper The protrusion 11 is formed on the second plate 20 and the swing range B of the first plate is limited in cooperation with the bendable stopper projection 11 of the first plate 10 on the vertical surface of the second plate 20 An arc-shaped stopper member 21 may be formed on the upper side of the through-hole 23. The arcuate path is a path along the turning radius of the bendable stopper projection of the first plate relative to the second plate 20 about the hinge axis.

The hinge shaft 30 capable of using commercial screws is coupled through the through holes of the first and second plates and finally the nut 70 as the engaging member is fastened to the threaded 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 diameter smaller than that of the shaft portion. A threaded portion is formed on an end side of the coupling portion, and a nut is screwed to the threaded portion.

The hinge shaft used in the hinge apparatus of the present invention is a conventional hinge shaft requiring a chamfering such as milling and turning with respect to the hinge axis by using a commercially available bolt composed of a hexagonal head portion 30a and a screw portion 30b The manufacturing process of the present invention is economical and easy to manufacture.

It is possible to secure tight contact with both the contact members between the head portion of the hinge shaft and the first plate 10 and between the second plate 20 and the nut 70 to increase frictional force, The first and second washers 41 and 42 are disposed. The first and second washers 41 and 42 may be flat washers and may have oil impregnated holes 41a and 42a for preventing abrasion and smooth turning movement at portions contacting the adjacent elements. Such an oil-impregnated hole can be installed in any place other than the first and second washer where a friction contact occurs between adjacent elements.

As described above, since the first plate 10 is relatively rotatable with respect to the second plate 20, the contact surfaces of the first plate and the second plate are considerably worn. In order to prevent such abrasion, the first and second fixing washers 51 and 52 are provided on both sides of the through-hole of the first plate, and the third and fourth fixing washers 53 and 54 . These fixed washers simultaneously perform the function of firmly fixing the hinge shaft to the through-holes of the first and second plates.

The first and second fixing washers 51 and 52 are provided with bending protrusions 51a and 52b around the circumference for fixing the first and second fixing washers 51 and 52 to the first plate 10 And a fixing hole 15a (15b) in which the bending protrusion (51a; 52b) is fitted is formed in the first plate around the through hole (13). At this time, since the bending projections and the fixing holes only have to correspond to each other, the number and position thereof can be freely changed.

The third and fourth fixing washers 53 and 54 are provided with bending projections 53a and 54a around the circumference to fix the third and fourth fixing washers 53 and 54 to the second plate 20 And a fixing hole 25a (25b) in which the bending protrusion (53a; 54a) is fitted is formed in the second plate around the through hole (23). At this time, since the bending projections and the fixing holes correspond to each other, the number and position of the bending projections and the fixing holes can be freely changed. In the same context, the two fixing washers fixedly coupled to the both surfaces of one plate can be arranged opposite to each other .

At least one of the above-described fixed washers 51, 52, 53, 54 simultaneously acts as an elastic washer which causes axial compression elasticity in the hinge assembly. In this case, the elastic washer is configured to be approximately hemispherical or disk-shaped, and the tightening force of the nut causes compression elasticity in the axial direction of the hinge, thereby firmly holding the coupling of the hinge assembly. According to a preferred embodiment of the present invention, this elastic washer is applied to the fourth fixed washer 54, but none of the other first, second, and third fixed washers 51, 52, May be an elastic washer 51 '(52'; 53 ') having a function. When the fourth fixing washer 54 is applied as an elastic washer, the second washer 42 and the nut 70, which are subsequently disposed on the fourth fixing washer 54, are integrally formed with a single washer-type nut 70 ') Can be used. The use of the washer-type nut 70 'having the washer portion 70a' eliminates the need for the second flat washer 42, thereby reducing the number of parts.

FIG. 4 is a perspective view of a hinge apparatus according to another embodiment of the present invention in which a coil spring member is provided, unlike FIGS. 2 and 3. FIG. 5 is an exploded perspective view of the hinge apparatus of FIG. The coil spring member 60 useful for adjusting the inclination angle of the large display device in the direction of the nut 70 in the second plate 20 can be provided. This is because, in the case of a heavy-weight display device having a heavy weight, since the hinge assembly can not be firmly held by the first and second plates only by the tightening force of the nut and the elastic force of the elastic washer, (I.e., when the inclination angle of the display device is adjusted), the elastic resistance force is generated in the revolving direction to effectively support the heavy display device. The first plate 10 is provided with a latching groove 16 perpendicular to the vertical surface portion and parallel to the hinge axis direction for the installation of the coil spring member 60, Thereby fixing one end (60b) of the member (60). The other end portion 60a of the coil spring member is installed so as to be caught by the lower fixing hole 25b of the second plate. At this time, the lower fixing hole 25b of the second plate is designed so that the bending projections of the fixing washer can be simultaneously engaged.

While the preferred embodiments of the present invention have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

According to the above-described configuration, a commercial bolt can be used without using a special hinge shaft having a chamfered shape, and the plate in the hinge assembly body is prevented from being worn by relative rotation, A hinge device capable of adjusting the inclination angle of the display device without using a separate component for restricting the pivoting degree of the hinge shaft assembled on the chamfered hinge axis and having excellent hinge function, do.

1 is an exploded perspective view showing a conventional hinge device for a video display device.

FIG. 2 is a perspective view of a hinge apparatus for a video display device according to an embodiment of the present invention in which a coil spring member is not provided. FIG.

3 is an exploded perspective view of the hinge device of FIG. 2;

FIG. 4 is a perspective view of a hinge apparatus according to another embodiment of the present invention in which a coil spring member is installed. FIG.

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

Description of the Related Art

10: first movable plate

20: second fixing plate

30: Hinge shaft

41: 1st plain washer

42: 2nd flat washer

51; The first fixed washer

52; The second fixed washer

53: third fixed washer

54: fourth fixed washer

70; nut

Claims (12)

A hinge device for adjusting the inclination angle of a flat display device, the hinge device comprising: a first movable plate fixed to a rear surface of a display device and having a through hole; a second fixed plate connected to a stand of the display device, A hinge shaft having a head portion, a coupling member fixedly coupled to a distal end of the hinge shaft, and a second movable plate coupled to the head portion of the hinge shaft and the first movable plate, First and second fixed washers fixedly coupled to both sides of the through hole of the first movable plate, and third and fourth fixed washers fixedly coupled to both sides of the through hole of the second fixed plate, Wherein at least one of the first, second, third, and fourth fixed washers is an elastic washer for applying axial compression elasticity. [2] The apparatus according to claim 1, wherein the first movable plate further comprises a bending protrusion on the upper end of the through-hole, and the second fixing plate has a bending protrusion on the upper end side of the through- Further comprising a turning guide having a predetermined swing angle range which is moved along a path that is the same as the turning direction of the hinge device. The hinge device according to claim 1, wherein the first plate has a latching groove formed in a portion thereof parallel to the hinge axis, one end is fixed to the latching groove of the first plate and the other end is fixed to the fixing hole of the second plate, Further comprising a coil spring member for providing a rotational elastic resistance force in a relative rotation between the first plate and the second plate about the axis. The apparatus according to any one of claims 1 to 3, wherein the first, second, third, and fourth stationary washers have at least one fixing protrusion, and around the through-hole of the first and second plates, Wherein a fixing hole for fixing the fixing protrusion of the hinge unit is formed. 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 diameter larger than that of the shaft portion and a shaft portion having a threaded portion formed at one end thereof. The hinge device for a video display device according to claim 5, 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 engaging member is a nut. The hinge device for a video display device according to any one of claims 1 to 3, wherein the first washer is a flat washer. 9. The hinge device for a video display device according to claim 8, wherein the first washer includes an oil-impregnated groove for preventing abrasion between adjacent elements at a contact portion with adjacent elements and providing a smooth swing motion. 4. An apparatus according to any one of claims 1 to 3, characterized in that at least one of the stationary washers comprises an oil-impregnated groove for preventing abrasion between adjacent elements at the contact with adjacent elements and for providing a smooth rolling movement A hinge unit for a video display device. 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 having fixing protrusions. The hinge device for a video display device according to claim 11, wherein the elastic washer is a fourth fixed washer adjacent to the coupling member, and the coupling member is a washer-shaped nut.