KR100443866B1 - Hinge device capable of adjusting rotation force - Google Patents

Abstract

The present invention relates to a rotating force adjustable hinge device that can be changed to a different restoring force without machining a part and can freely adjust the distance to the hinge bracket, while easily changing the rotation angle. The hinge device according to the present invention has a pair of supports having a polygonal hole, and a hinge bracket in which a plurality of adjustment holes are arranged around a polygonal hole of a support positioned at an outer side, separated by grooves and inserted into the polygonal hole of the hinge bracket. A pair of hinge shafts provided on both sides of the hinge bracket, each of which has a plurality of multi-faceted portions, a circular portion having a multi-stage groove formed in multiple stages in the circumferential direction, and a circular shaft portion having a flat machined screw portion The rotation angle of the hinge shaft is adjusted by the fasteners fastened to the multi-stage groove, and it is connected to each hinge shaft by a nut fastened to the threaded portion of the hinge shaft, and a pair of mounting brackets and one end are inserted into the adjusting hole. And a torsion spring mounted to the hinge shaft such that the other end is inserted into a hole formed in the mounting bracket. . The end of the fastener fastened through the screw hole formed in the base plate of the hinge bracket is located in one of the grooves of the hinge shaft.

Description

HINGE DEVICE CAPABLE OF ADJUSTING ROTATION FORCE}

The present invention relates to a hinge device, and more particularly, to a hinge used for adjusting the viewing angle of a video display device, the rotation force adjustable hinge device that can adjust the size and change of the rotational force of the hinge shaft using the friction force will be.

Recently, television receivers and computer monitors using a display panel made of a liquid crystal display (LCD) as an image display means have been widely used. Products using such display panels have been miniaturized and compared to television receivers and computer monitors using a cathode ray tube. Since it can be reduced in weight, it has been in the spotlight as an alternative to a television receiver and a computer monitor using a cathode ray tube.

A television receiver and a computer monitor using a flat panel display panel such as a liquid crystal display device are configured to rotate the display panel to adjust the viewing angle and eliminate reflection of external light. The display panel viewing angle adjusting device for adjusting the viewing angle of the display panel is mainly used. The hinge device connecting the display panel and the stand is mainly used.

1 and 2 illustrate a hinge device for adjusting a viewing angle of a flat panel display panel in a liquid crystal display.

As shown in FIG. 1, in the hinge device of the flat panel display panel, the torsion spring 102, the stopper 103, and the space washers 104 for securing the angle restoring force are sequentially fixed to the left and right sides of the hinge shaft 101. . As shown in FIG. 2, the hinge shaft 101 is a rod having a constant length, and a flat portion 101a is formed at a central portion thereof, and has a symmetrical configuration about the flat portion 101a. The hinge shaft 101 has a circular rod portion 111 having a predetermined diameter adjacent to the flat portion 101a formed at the center, an angular portion 112 formed outside the circular rod portion 111, and illustrated in FIG. 1. A thread 113 to which the fixing nut 108 as described above is fastened is formed at the end.

The stopper 103 is for controlling the rotation angle of the hinge, and the space washer 104 is for maintaining a constant distance between the stopper 103 and the hinge bracket 105 for hinge fixing. The torsion spring 102 for obtaining the angle restoring force is fitted into the engaging groove 109a of the support bracket 109, one end of which is installed in the flat portion 101a of the hinge shaft 101 for hinge fixing. The other end 102b is fitted into the hole 105b formed in the hinge bracket 105.

A plurality of fixing screws 121 and guide pins 122 pass through the through holes 109a formed in the support bracket 109 to form the screw holes 114 and insertion holes formed in the planar portion 101a of the hinge shaft 101. By being fastened and inserted into the 115, respectively, the support bracket 109 for supporting the display panel is placed in the flat portion 101a formed in the center portion of the hinge shaft 101.

The stopper 103 for controlling the rotation angle of the hinge has an angled hole 103a having the same shape as the angled portion 112 so as to receive the angled portion 112 of the hinge shaft 101, while its outer peripheral surface The stopper protrusion 103b which extends outward is formed. The stopper protrusion 103b extending outward is inserted into the arc-shaped guide ball 105a formed in the hinge bracket 105. Therefore, when the hinge shaft 101 and the support bracket 109 are rotated when the stopper 103 is coupled to the hinge shaft 101, the protrusion 103b of the stopper 103 is inserted into the guide hole 105b. You can move within the circle's range. Therefore, by changing the opening range of the guide hole 105a of the hinge bracket 105 into which the stopper protrusion 103b is inserted, the amount of rotation of the hinge can be adjusted.

Another space washer 104a is located outside of the hinge shaft 101 between the plurality of friction washers 106 and the hinge bracket 105 for controlling the operating force of the hinge. In addition, when the hinge shaft 101 is rotated, the fixing nut 108 is fastened to the threaded portion 113 of the hinge shaft 101 to fix the above-described members to the hinge shaft 101. In order to prevent the fixing nut 108 from loosening from the thread portion 113, the flat portion 107a of the nut loosening washer 107 is provided to the angled portion 112 of the hinge shaft 101, whereby the set frictional force is fixed. Friction losses that may occur due to loosening of the nut 108 can be prevented.

However, in the conventional hinge device as described above, the ends of the torsion springs installed on the hinge shafts are coupled to the holes formed in the hinge brackets and the engaging grooves formed in the support brackets, whereby the torsion springs have the same restoring force at one position on the support brackets. As a result, there has been a problem that each part must be newly processed when providing different restoring force to the support bracket.

Further, the conventional hinge device as described above has to rework the hinge shaft because the shape is complicated when the distance to the hinge bracket for hinge fixing is changed, while the hinge when the rotation angle of the hinge device is changed. There was a problem that the opening amount of the guide hole formed in the bracket must be changed.

Accordingly, an object of the present invention is to provide a hinge apparatus capable of adjusting the rotational force that can be changed to a different restoring force without machining a part and can freely adjust the distance to the hinge bracket, while easily changing the rotational angle.

1 is a partially exploded perspective view showing the configuration of a conventional hinge device.

Figure 2 is a perspective view showing the configuration of the shaft of the conventional hinge device shown in FIG.

Figure 3 is an exploded perspective view of the hinge device adjustable torque according to the present invention.

Figure 4 is a perspective view showing the configuration of the hinge shaft of the hinge device according to the invention shown in FIG.

5 is a partially enlarged detail of the hinge shaft.

Fig. 6 is a view for showing in more detail the installation relationship of the component parts to the hinge shaft.

7 shows a washer and spring washer installed on the hinge shaft.

8 is a view showing a state in which all the components are installed on the hinge shaft.

8A is a view for showing the shape of the multi-stage groove formed in the circular portion of the hinge shaft.

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

1 Hinge Bracket 2 Hinge Shaft

3a: inner support 3b: outer support

4: polygon hole 6, 18: screw hole

7, 15: fastener 8, 17, 33: nut

9: adjuster 11: multi-sided part

12: groove 13: multi-stage groove

14: mounting bracket 19: circular portion

20: torsion spring 21: circular shaft

22: flat portion 23: screw portion

24: mounting plate 25: through hole

26: upright plate 27: circular opening

28: small hole 30: projection

31: protective washer 32: space washer

34: friction washer 35a, 35b: fixed washer

36: round ball

An object as described above has a hinge bracket having a support pair having a polygonal hole, and a plurality of adjustment holes are arranged around the polygonal hole of the support located outside; Each hinge having a plurality of multi-sided portions separated by the grooves and inserted into the polygonal holes of the hinge bracket, a circular portion having a multi-stage groove formed in multiple stages in the circumferential direction, and a circular shaft portion having a flat machined screw portion. A pair of hinge shafts installed at both sides of the bracket; A pair of mounting brackets connected to each of the hinge shafts by a nut fastened to the hinge shaft by a fastener fastened to the multi-stage groove of the hinge shaft, and fastened to a threaded portion of the hinge shaft; A torsion spring installed at the hinge shaft such that one end is inserted into the adjusting hole and the other end is inserted into a hole formed in the mounting bracket; End of the fastener which is fastened through the screw hole formed in the base plate of the hinge bracket can be achieved by the rotational force adjustable hinge device according to the invention, characterized in that located in one of the grooves of the hinge shaft.

In the above, the hinge shaft is die casted so that a stepped surface having a pair of protrusions is formed between the circular shaft portion and the circular portion, and a protective washer having a groove into which the protrusions are inserted is provided between the torsion spring and the mounting bracket. Is located.

In addition, a plurality of friction washers having a plurality of tensioning portions that are staggered to both sides are provided between the mounting bracket and the nut fastened to the threaded portion of the hinge shaft.

Preferably, the washers are formed of the same material as the hinge shaft.

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

Figure 3 is an exploded perspective view of a hinge device capable of adjusting the rotational force according to the present invention, Figure 4 is a perspective view showing the configuration of the hinge shaft of the hinge device according to the invention shown in FIG.

3 and 4, the hinge device according to the present invention includes a hinge bracket 1 on which a display panel is installed, and a pair of hinge shafts 2 inserted into both sides of the hinge bracket 1; And a pair of mounting brackets 14 for supporting the outer ends of each hinge shaft 2.

The hinge bracket 1 to which the display panel is installed has a base plate 1a formed of a plate body and inner and outer support pairs 3a and 3b upright on both sides of the base plate 1a, as can be seen from the figure. . Each of the supports 3a and 3b is formed in an arc shape, and polygonal holes 4 are formed in which a hinge shaft 2 is inserted and supported in the center portion thereof. The outer support 3b has restoring force adjusting holes 9 arranged in an arc shape around the polygonal hole 4 according to the present invention. As shown in FIG. 5, a screw hole 6 is formed in the base plate 1a between the inner and outer support members 3a and 3b, and the fastener 7 is fastened to the screw hole 6. Since the fastener 7 has a rounded end portion as shown in FIG. 8, when the fastener 7 is fastened to the screw hole 6, the fastener 7 is in close contact with the groove 12 having a rounded cross section. Can be. In addition, when the fastener 7 is fastened to the screw hole 6, the nut 8 is fastened to the fastener 7 to prevent the fastener 7 from loosening from the screw hole 6.

A pair of hinge shafts 2 supported on both sides of the hinge bracket 1 are located in the vicinity of the plurality of facets 11 and the facets 11 and have a multistage groove having a shape as shown in FIG. 8A. 13, and a circular shaft portion 21 having a threaded portion 23 on which a flat portion 22 is formed. The hinge shaft 2 is preferably die casted to reduce processing costs. As can be seen from the figure, since the circular shaft portion 21 has a smaller diameter than the circular portion 19, a stepped surface 29 is formed between the circular shaft portion 21 and the circular end portion 19, and the stepped surface ( 29 is formed with a pair of projections 30 arranged at intervals of about 180 °, ie symmetrically.

Each of the facets 11 is bounded by a plurality of recesses 12, which are faced by the inner and outer supports 3a and 3b of the hinge bracket 1 as shown in FIG. 8. It is inserted into the polygonal hole (4) formed in. The multifaceted portion 11 is inserted into the polygonal holes 4 formed in the inner and outer supports 3a and 3b, thereby preventing the hinge bracket 2 from being rotated when supported by the hinge bracket 1.

When the facets 11 of the hinge shaft 2 are coupled to the inner and outer supports 3a, 3b of the hinge bracket 1, the positions coincide with the grooves 12 formed between the facets 11. In the hinge shaft 2, the screw hole 6 of the base plate 1a is positioned, so that the end of the fastener 7 fastened to the screw hole 6 is positioned in the groove 12, whereby the hinge shaft 2 ) Is prevented from being separated from the hinge bracket 1.

The multistage grooves 13 formed in the circular portion 19 of the hinge shaft 2 are formed in multiple stages in the circumferential direction of the hinge shaft 2 as shown in FIG. 8A, and as shown in FIGS. 6 and 8. A fastener 15 for connecting the mounting bracket 14 to the hinge shaft 2 is located into the multistage groove 8. Since the multistage groove 13 is formed in multiple stages in the circumferential direction, the amount of rotation of the hinge shaft 2 can be adjusted according to the position of the fastener 15 in the multistage groove 13.

A fastener 15 for connecting the mounting bracket 14 to the hinge shaft 2 is fastened to a screw hole 18 formed in the protruding piece 14a provided in the mounting bracket 14 as can be seen from the figure. do. At this time, the fastener 15 is fastened to the screw hole 18 so that the end portion of the fastener 15 protrudes from the protruding piece 14a and contacts one of the multi-stage grooves 13. In addition, by fastening the nut 17 to the fastener 15, the fastener 15 can be released from the protruding piece 14a, so that the fastener 15 can be prevented from being separated from the mounting bracket 14.

The mounting bracket 14 includes a mounting plate 24 having a pair of through holes 25 through which the fasteners are inserted so that the mounting bracket 14 can be installed on the stand of the display, and a protrusion 14a formed on the upper side of the mounting plate. It has an upright plate 26 which is formed upright on one side of 24. The upstanding plate 26 is formed with a circular opening 27 through which the circular shaft portion 21 of the hinge shaft 2 is supported. In addition, the upright plate 26 is adjacent to the circular opening 27 so that the outer end 20a of the torsion spring 20 installed in the hinge shaft 2 is inserted in order to restore the rotational force of the hinge bracket 1. One small hole 28 is formed.

That is, when the hinge shaft 2 is supported by the hinge bracket 1 and the mounting bracket 14 by the fasteners 7 and 15, the hinge shaft between the hinge bracket 1 and the mounting bracket 14 At 2, the torsion spring 20 is located. The outer end 20a of the torsion spring 20 is inserted into the small hole 28 formed in the upright plate 26 of the mounting bracket 14 as described above, and the inner end 20b of the torsion spring 20 is provided. ) Is inserted into one of the adjustment holes 9 formed in the outer support 3b of the hinge bracket 1. Thus, the inner end 20b of the torsion spring 20 is inserted into one of the adjustment holes 9 in accordance with the restoring force of the torsion spring 20, whereby the torsion spring 20 is applied to the hinge bracket 1. Restorative force can be adjusted as appropriate.

When the torsion spring 20 is installed on the hinge shaft 2, the protective washer 31 adjacent the torsion spring 20 and the space washer 32 adjacent the upright plate 26 of the mounting bracket 14. ) Is installed on the hinge shaft (2). The protective washer 31 installed in the hinge shaft 2 adjacent to the torsion spring 20 has grooves 31a formed at a position corresponding to the protrusion 30. The protective washer 31, when installed on the hinge shaft 2, is in close contact with the step surface 29 formed between the circular portion 19 and the circular shaft portion 21 of the hinge shaft 2, and the step surface 29. The protrusions 30 formed in the grooves are respectively inserted into the grooves 31a formed in the protective washer 31.

Therefore, when the hinge shaft 2 is rotated, the protective washer 31 can be rotated together with the hinge shaft 2 to prevent the side frictional force from being directly transmitted to the hinge shaft 2. Thus, the space washer 32 is positioned between the protective washer 31 and the upright plate 26 to prevent friction sounds that may be caused by the protective washer 31 directly contacting the upright plate 26 of the mounting bracket 14. do.

As described above, when the torsion spring 20 and the hinge shaft 2 are installed on the mounting bracket 14, the threaded portion 23 of the hinge shaft 2 is removed from the upright plate 26 of the mounting bracket 14. The nut 33 is fastened to the threaded portion 23 protruding from the mounting bracket 14. Before the nut 33 is fastened to the threaded portion 23, a pair of friction washers 34 and fixing washers 35a and 35b as shown in FIG. 7 are provided on the threaded portion 23. The fixed washer 35b located on the outside has a circular hole 36 having a planar portion 36a, such as a threaded portion 23 having a planar portion 22 formed on both sides thereof. Therefore, the fixed washer 35b rotates together with the hinge shaft 2 when the hinge shaft 2 rotates.

The friction washers 34 are provided with a plurality of tension portions 34a along the circumference thereof, and the tension portions 34a are alternately formed in both directions. Since the tension portions 34a are formed in both directions staggered with each other, more frictional force can be obtained for the same displacement.

On the other hand, the washers used in the hinge device of the present invention are preferably made of the same material as the hinge shaft 2 in order to prevent wear of the hinge shaft 2.

As described above, according to the rotational force adjustable hinge device according to the present invention, a plurality of multi-sided portion arranged in the longitudinal direction can be freely adjusted the distance to the hinge bracket by being formed on the hinge shaft, and also mounting bracket, torsion spring Adjusting holes for adjusting the restoring force of the formed in the hinge bracket can be changed to a different restoring force without machining the part. In addition, since the hinge shaft is installed in the mounting bracket by the fastener fastened to the multi-stage groove, the rotation angle can be easily changed by changing the fastening position with respect to the multi-stage groove.

Claims (4)

A hinge bracket having a support pair having a polygonal hole, wherein a plurality of adjustment holes are arranged around the polygonal hole of the support positioned outside; Each hinge having a plurality of multi-sided portions separated by the grooves and inserted into the polygonal holes of the hinge bracket, a circular portion having a multi-stage groove formed in multiple stages in the circumferential direction, and a circular shaft portion having a flat machined screw portion. A pair of hinge shafts installed at both sides of the bracket; A pair of mounting brackets connected to each of the hinge shafts by a nut fastened to the hinge shaft by a fastener fastened to the multi-stage groove of the hinge shaft, and fastened to a threaded portion of the hinge shaft; A torsion spring installed at the hinge shaft such that one end is inserted into the adjusting hole and the other end is inserted into a hole formed in the mounting bracket; Rotating force adjustable hinge device, characterized in that the end of the fastener which is fastened through the screw hole formed in the base plate of the hinge bracket is located in one of the grooves of the hinge shaft. 2. The hinge shaft of claim 1, wherein the hinge shaft is die casted so that a stepped surface having a pair of protrusions is formed between the circular shaft portion and the circular portion, and a groove into which the protrusions are inserted between the torsion spring and the mounting bracket. Rotation force adjustable hinge device characterized in that the guard washer is located. 2. A hinge according to claim 1, wherein a plurality of friction washers having a plurality of tensioning parts staggered to each other are provided between the nut and the mounting bracket which are fastened to the threads of the hinge shaft. The hinge apparatus of claim 1, wherein the washers are formed of the same material as the hinge shaft.