TWI388211B - Support device - Google Patents

Description

Support device

The present invention relates to a support device, and more particularly to a support device for supporting a display screen.

Today, flat panel displays such as liquid crystal displays (LCDs) and plasma displays (PDPs) have been widely used in display main bodies of personal computers and televisions. In order to facilitate the viewing of the display screen within a preferred viewing angle range and line of sight distance, a support device is typically provided to be coupled to the display screen body to effect adjustment of the height and viewing angle of the display screen.

A supporting device includes a base, a bracket, a rotating mechanism disposed between the base and the bracket, a pivoting mechanism and a tilting mechanism disposed between the bracket and the display screen, and the rotating mechanism, the pivoting mechanism and the tilting mechanism respectively provide the supporting device with three directions Turn.

However, the bracket is generally a four-bar linkage structure which is die-cast from a magnesium alloy or a zinc alloy and has a high material cost. At the same time, in order to provide a certain positioning friction force, a plurality of elastic pieces and friction plates are arranged on the pivoting mechanism, the number of parts is high, the cost is high, and the frictional force of each part on the pivoting mechanism is unbalanced, thereby shortening the use of the pivoting mechanism. life.

In view of the above, it is necessary to provide a support device which is low in cost, simple in structure, and balanced in force.

A supporting device for supporting a display screen of an electronic device, comprising: a base, a bracket, a rotating mechanism disposed between the base and the bracket, and being disposed on the bracket and the display Pivot mechanism and pitch mechanism between the screens. The rotating mechanism, the pivoting mechanism and the tilting mechanism respectively provide the supporting device with three-direction rotation, the pivoting mechanism comprises a connecting frame and a rotating bracket rotatably connected with the connecting frame, the tilting mechanism comprises a rotating shaft, and the connecting frame is connected to the rotating shaft and Rotate with the shaft. The tilting mechanism further includes a fitting member, the fitting member includes a connecting portion and a fitting portion bent along the one end of the connecting portion, wherein the rotating shaft of the pitching mechanism is interference fit in the fitting portion of the fitting member of the pitching mechanism, the pivoting mechanism The utility model further comprises a movable washer and a follower washer which are relatively rotatable, wherein one of the active washer and the follower washer is provided with a positioning protrusion, and the other is provided with a positioning hole matched with the positioning protrusion. The active gasket is fixed on the rotating bracket, and the sliding gasket is fixed on the connecting bracket.

The pitching mechanism of the supporting device has a small number of parts, a simple structure and a low cost. The rotating shaft of the pitching mechanism and the fitting are interference-fitted to provide a balanced frictional force, which is beneficial to prolonging the service life of the supporting device.

The support device of the present invention is used to support an electronic device with a display screen. Hereinafter, a support device applied to a liquid crystal display device will be described as an example.

Referring to FIGS. 1 and 2 , the liquid crystal display device 100 includes a display screen 10 and a supporting device 20 for supporting the display screen 10 . The support device 20 includes a base 22, a support assembly 24, a rotating mechanism 26, a pivoting mechanism 28, and a pitching mechanism 30.

The rotating mechanism 26 is disposed between the base 22 and the support assembly 24 to enable the support assembly 24 to rotate relative to the base 22 about the axis of rotation a. Both the pivoting mechanism 28 and the tilting mechanism 30 are disposed between the support assembly 24 and the display screen 10 to respectively rotate the display screen 10 about the axis b and the axis c.

The base 22 is generally a rectangular plate for supporting other components of the liquid crystal display device 100. It will be understood that the base 22 may have other shapes, such as a circular plate.

Referring to FIG. 3, the support assembly 24 includes a bracket 242, a first sleeve 244, a second sleeve 246, and a third sleeve 248. The bracket 242 is a sheet metal member having a U-shaped cross section. The bracket 242 is made of a galvanized steel plate or a surface-treated steel plate and is stamped by a stamping die, and has high production efficiency and low raw material cost. The first, second, and third sets of shells 244, 246, 248 are made of a plastic material that is wrapped over the bracket 242 to provide a preferred appearance for the entire support assembly 24.

Referring to FIG. 4 together, the bracket 242 includes a substrate (not labeled) and two side plates (not labeled) extending perpendicularly to the substrate. The two side plates are respectively provided with a circular pivot hole 2422 and a square insertion hole 2424 adjacent to the pivot hole 2422. The surface of the substrate near one end of the rotating mechanism 26 is a resisting surface 2428, and an opening is formed at the end of the substrate. (not shown), a resisting portion 2426 is formed in the inner side wall of the opening and bent in a direction parallel to the side plate.

The rotating mechanism 26 includes two symmetrically disposed hinge structures 262. Each of the hinge structures 262 includes a rotating shaft 264, a spacer 266 which is sequentially sleeved on the rotating shaft 264, a friction plate 268, a spacer 266, a connecting frame 270, two elastic pieces 272, and a screw. The nut 274 is coupled to the rotating shaft 264 and the torsion spring 276 is sleeved on the elastic piece 272 and the nut 274.

The rotating shaft 264 includes a flange portion (not shown) and a deforming shaft portion (not shown) extending from one side of the flange portion, the flange portion is for resisting the spacer 266, and the deforming shaft portion is provided with two opposite thereto a plane symmetrical about the axis, and a deformation shaft portion is provided External thread to screw with nut 274.

The spacer 266 is a sheet body having a deformation hole at the center thereof, and is sleeved on the rotating shaft 264 so as not to be rotatable.

The friction plate 268 is an annular piece body having a circumferential extension 2682 extending in the axial direction. The protrusion 2682 can be inserted into the insertion hole 2424 of the bracket 242, and the friction plate 268 is non-rotatably coupled to the bracket 242.

The connecting frame 270 includes a pivoting portion 278 and a fixing portion 280 extending perpendicularly from the pivoting portion 278. The pivoting portion 278 is provided with a circular pivot hole (not shown) for the shaft 264 to pass through. An assembly hole 2782 is also formed in the pivoting portion 278 below the pivot hole. The pivoting portion 278 is provided with a limiting surface 2784. The limiting surface 2784 includes an inclined surface and a horizontal surface for abutting against the abutting surface 2428 of the bracket 242 to define a rotation angle of the bracket 242 relative to the connecting bracket 270.

The elastic piece 272 is annular and can be axially deformed to provide an axial elastic force.

The nut 274 is screwed with the external thread on the deformed shaft portion of the rotating shaft 264 to press the elastic piece 272. The axial elastic force provided by the elastic piece 272 tightly presses the components which are disposed on the rotating shaft 264 to provide the required frictional force. .

The torsion spring 276 includes a coil and a first mounting portion 2762 and a second mounting portion 2764 extending from both ends of the coil. The first mounting portion 2762 is inserted into the assembly hole 2782 of the first connecting frame 270, and the second mounting portion 2764 is abutted against the abutting portion 2426 of the bracket 242.

Referring to FIG. 5, the pivoting mechanism 28 includes a rotating shaft 282, a spacer 284 which is sequentially sleeved on the rotating shaft 282, a friction plate 286, a rotating bracket 288, and an active gasket. 290, the follower pad 292, the connecting frame 294, the elastic piece 296, and the nut 298 locked to the end of the rotating shaft 282. The pivot mechanism 28 also includes a stop 2882 that is secured to the swivel bracket 288. The end of the limiting member 2882 is a smooth surface.

The rotating shaft 282 includes a flange portion (not shown) and a deforming shaft portion (not shown) extending from one side of the flange portion. The flange portion is a circular piece for resisting the spacer 284. The deformed shaft portion is provided with two planes symmetrical with respect to its axis.

The spacer 284 is in the form of a sheet which is non-rotatably sleeved on the rotating shaft 282.

The friction plates 286 are generally annular, with opposite sides of the circumference extending a tab 2862 extending parallel to the axial direction thereof.

The rotating bracket 288 is a circular sheet body having a through hole 2880 at a central portion thereof. A square snap hole 2884 and four circular mounting holes 2886 are formed in the rotating bracket 288 at the periphery of the through hole 2880.

The active spacer 290 is a circular sheet body having a through hole 2902 at a central portion thereof. The active spacer 290 is evenly distributed with four positioning protrusions 2904 around the periphery of the through hole 2902. The opposite sides of the circumference of the active spacer 290 respectively extend along a direction parallel to the axial direction thereof to form a tab (not shown). The tabs 2862 of the friction plates 286 and the tabs of the active spacers 290 are inserted into the snap holes 2884 of the friction plates 286 such that the friction plates 286 and the active pads 290 are non-rotatably coupled to the rotating bracket 288.

The follower pad 292 is a circular piece body, and a through hole is formed in a central portion thereof for the rotation shaft 282 to pass through. The positioning washer 292 is further provided with four positioning holes 2922, and the positioning holes 2922 cooperate with the positioning protrusions 2904 of the active spacer 290, so that the pivoting mechanism 28 has a better positioning feel. On the circumference of the follower pad 292 Four tabs 2924 extend to one side, and the four tabs 2924 are evenly distributed on the circumferential side of the follower pad 292.

It can be understood that a positioning hole can also be disposed on the active spacer 290, and correspondingly, a positioning protrusion is disposed on the following spacer 292.

The connecting frame 294 includes a base portion 2942 and two pivoting portions 2944 extending perpendicularly from one end of the base portion 2942 to one side thereof. A pivoting hole (not shown) is formed on the base portion 2942 and the pivoting portion 2944. The base portion 2942 is further provided with four snap holes (not labeled) for inserting the tab 2924 of the follower pad 292. Assume. The top surface of the base 2942 is a circular arc surface 2946 for resisting the limiting member 2882. Both ends of the circular arc surface 2946 are concave surfaces (not shown).

The elastic piece 296 is a circular piece body which is non-rotatably sleeved on the rotating shaft 282 to provide an axial elastic force.

The tilt mechanism 30 includes a rotating shaft 302, a sleeve 304, and a snap ring 306. The rotating shaft 302 includes a flange portion 3022 and a deforming shaft portion 3024 extending from one side of the flange portion. The end portion of the shaft portion 3024 is provided with a card slot 3026 along the circumferential direction thereof.

The sleeve member 304 includes a connecting portion 3042 and a fitting portion 30 44 extending along one end of the connecting portion 3042. The connecting portion 3042 is a sheet body that is fixed to the bracket 242. The sleeve portion 3044 is formed by bending a sheet of a sheet, and has a C-shaped cross section. The sleeve portion 3044 is provided with a set of holes 3046 surrounded by a sheet, and a radial section of the sleeve hole 3046. The diameter is slightly smaller than the diameter of the radial section of the shaft portion 3024 of the shaft 302. An oil hole 3048 is formed in the sleeve portion 3044 along the radial direction of the sleeve hole 3046 to facilitate the joining of the lubricating oil. The shaft portion 3024 of the rotating shaft 302 is interference fit in the sleeve hole 3046 to provide a certain frictional force.

The snap ring 306 is generally a C-shaped body that snaps into the slot 3026 of the spindle 302 to prevent other components from falling off the spindle 302.

Referring to FIG. 4 to FIG. 6 , during assembly, the deformed shaft portion of the rotating shaft 264 of the rotating mechanism 26 sequentially passes through the spacer 266 , the connecting hole 2424 of the bracket 242 , the friction plate 268 , the spacer 266 , and the pivoting portion of the connecting frame 270 . 278 and the second elastic piece 272, the nut 274 is screwed to the end of the rotating shaft 264, and the torsion spring 276 is sleeved on the elastic piece 272 and the nut 274. The first mounting portion 2762 of the torsion spring 276 is inserted into the first connecting frame 270. In the assembly hole 2782, the second mounting portion 2764 abuts against the abutting portion 2426 of the bracket 242. Then, the connecting bracket 270 is fixedly coupled to the base 22, thus completing the assembly of the rotating mechanism 26. The spacer 266 and the elastic piece 272 are non-rotatable with respect to the rotating shaft 264, and the bracket 242, the friction plate 268 and the connecting frame 270 are rotatable relative to the rotating shaft 264. The torsion spring 276 has a certain amount of compression to provide a predetermined torque.

Next, the deformed shaft portion of the rotating shaft 282 of the pivoting mechanism 28 sequentially passes through the spacer 284, the friction plate 286, the through hole 2880 of the rotating bracket 288, the through hole 2902 of the active spacer 290, and the through hole of the follower pad 292. The pivoting hole of the base 2942 of the connecting frame 294 and the elastic piece 296, and then the nut 298 is locked to the end of the rotating shaft 282. The tabs 2862 of the friction plate 286 and the tabs of the active spacer 290 are respectively inserted into the latching holes 2884 of the rotating bracket 288, and the tabs 2924 of the follower pad 292 are inserted into the buckles of the base 2942 of the connecting frame 294. In the hole. The washer 284, the follower washer 292, the connecting bracket 294 and the elastic piece 296 are not rotatable relative to the rotating shaft 282, and the friction plate 286, the rotating bracket 288, and the active washer 290 are rotatable relative to the rotating shaft 282. Then, the limiting member 2882 is screwed onto the rotating bracket 288, and the smooth surface of the end portion of the limiting member 2882 is abutted against the circular arc surface 2946 of the base portion 2942 of the connecting frame 294, thereby defining the connection. The angle of rotation of the frame 294. Then, the rotating bracket 288 is fixedly coupled to the display screen 10 of the liquid crystal display device 100. This completes the assembly of the pivoting mechanism 28.

Then, the deformed shaft portion of the rotating shaft 302 of the pitching mechanism 30 sequentially passes through the pivot hole of the pivoting portion 2944 of the connecting frame 294, the sleeve hole 3046 of the sleeve 304, and the pivot of the other pivoting portion 2944 of the connecting frame 294. The hole is received, and then the snap ring 306 is engaged with the card slot 3026 of the rotating shaft 302. The connecting portion 3042 of the fitting 304 is fixedly coupled to the bracket 242, thereby completing the assembly of the pitch mechanism 30.

Finally, the first, second and third sets of shells 244, 246, 248 are respectively fitted on the bracket 242, and the liquid crystal display device 100 is assembled.

Referring to FIG. 2 together, the axes a, b, and c shown in FIG. 2 refer to the axis of rotation 264 of the rotating mechanism 26, the rotating shaft 282 of the pivoting mechanism 28, and the axis of the rotating shaft 302 of the pitching mechanism 30, respectively. In use, the display screen 10 is rotated to rotate the bracket 242 around the axis a. One end of the bracket 242 is gradually away from the base 22, and the torsion spring 276 is also rotated to release the preset torque, thereby reducing the pulling force until the bracket 242 is The abutting surface 2428 abuts against the limiting surface 2784 of the connecting frame 270. At this time, the angle between the bracket 242 and the base 22 is 90 degrees. The friction generated between the components in the pivoting mechanism 28 causes the display screen 10 to be positioned at a set angle. The angle between the bracket 242 and the base 22 ranges from 0 to 90 degrees. Of course, it can be arbitrarily set according to actual conditions.

The display screen 10 is rotated to rotate the rotating bracket 288 of the pivoting mechanism 28 about the axis b, the active spacer 290 and the follower washer 292 are relatively rotated, and the positioning protrusion 2904 of the active spacer 290 and the positioning on the follower spacer 292 Hole 2922 matches each other In combination, the positioning feel of the rotating bracket 288 when rotating can be improved. The limiting member 2882 slides smoothly along the circular arc surface 2946 of the connecting frame 294 with the rotating bracket 288, and abuts against the circular arc surface 2946, and the pressing degree of the limiting member 2882 and the circular arc surface 2946 and the rotation of the rotating bracket 288 The angle is in a linear equation relationship such that the external force required to rotate the rotating bracket 288 remains substantially unchanged. The two ends of the circular arc surface 2946 are concave surfaces, and when the limiting member 2882 slides to the concave surface, the sliding stops, and the rotation limit of the rotating bracket 288 is realized. In the present embodiment, the rotation of the display screen 10 about the axis b ranges from 0 to 90 degrees.

The display screen 10 is rotated to rotate the connecting frame 294 of the pivoting mechanism 28 about the axis c, and the rotating shaft 302 of the tilting mechanism 30 is rotated relative to the sleeve 304. Because the rotating shaft 302 and the fitting 304 have an interference fit, the rotating shaft 302 A large frictional force can be generated between the sleeve member 304 to position the display screen 10 at a predetermined angle. In the present embodiment, the angle at which the display screen 10 is rotated about the axis c ranges from 0 to 180 degrees.

When the support device 20 is applied to the liquid crystal display device 100, it can be folded into the shape shown in FIG. 7, that is, the support display screen 10, the support assembly 24, and the base 22 are kept parallel, thereby reducing the packaging space of the liquid crystal display device 100.

The pitch mechanism 30 can realize a predetermined function, and has a small number of parts, is easy to assemble and disassemble, is advantageous for mass production, and reduces production cost. The pitch mechanism 30 is subjected to the weight of the entire display screen 10, and the force of the rotating shaft 302 of the pitch mechanism 30 and the sleeve 304 is concentrated, and the sleeve portion 3044 of the sleeve member 304 is interference-fitted with the rotating shaft 302. The larger friction fits the area, so that the sleeve 304 and the rotating shaft 302 are more balanced, and the service life of the pitch mechanism 30 is extended.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and those skilled in the art will be equivalently modified or changed in the spirit of the invention. All should be included in the scope of the following patent application.

100‧‧‧Liquid crystal display device

10‧‧‧ display screen

20‧‧‧Support device

22‧‧‧Base

24‧‧‧Support components

242‧‧‧ bracket

2422‧‧‧Pivot hole

2424‧‧‧ jack

2426‧‧‧Responsible Department

2428‧‧‧Resistance

244‧‧‧ first set of shells

246‧‧‧Second set of shells

248‧‧‧ third set of shells

26‧‧‧Rotating mechanism

262‧‧‧Hinged structure

264, 302, 282‧‧ ‧ shaft

266, 284‧‧‧shims

268, 286‧‧‧ friction plates

2682, 2862, 2924‧‧ ‧ tabs

270, 294‧‧‧ connecting frame

272, 296‧‧ ‧ shrapnel

274, 298‧‧‧ nuts

276‧‧‧torsion spring

2762‧‧‧First Installation Department

2764‧‧‧Second Installation Department

278, 2944‧‧‧ pivotal

2782‧‧‧Assembled holes

2784‧‧‧Limited surface

280‧‧‧Fixed parts

28‧‧‧ pivoting mechanism

288‧‧‧Rotating bracket

2880, 2902‧‧‧through holes

2882‧‧‧Limited parts

2884‧‧‧Snap holes

2886‧‧‧Assembly holes

290‧‧‧Active gasket

2904‧‧‧Positioning bulges

292‧‧‧Sliding gasket

2942‧‧‧ base

2946‧‧‧Circular surface

30‧‧‧Pitching mechanism

3022‧‧‧Flange

3024‧‧‧Axis

3026‧‧‧ card slot

304‧‧‧ fittings

3042‧‧‧Connecting Department

3044‧‧‧ Included

3046‧‧‧Close hole

3048‧‧‧ oil hole

306‧‧‧Knock ring

1 is a perspective view of a support device of the present invention applied to a liquid crystal display device.

2 is a perspective view of the liquid crystal display device of FIG. 1 after removing the casing.

Figure 3 is an exploded perspective view of the support assembly of the support device of Figure 1.

Figure 4 is an exploded perspective view of the rotating mechanism of the supporting device of Figure 1.

Figure 5 is an exploded perspective view of the pivoting mechanism and the tilting mechanism of the supporting device of Figure 1.

Figure 6 is an assembled view of the support device of Figure 1.

Figure 7 is a perspective view of the liquid crystal display device of Figure 1 after being folded.

242‧‧‧ bracket

2428‧‧‧Resistance

270, 294‧‧‧ connecting frame

2784‧‧‧Limited surface

288‧‧‧Rotating bracket

2882‧‧‧Limited parts

2946‧‧‧Circular surface

Claims (9)

A supporting device for supporting a display screen of an electronic device, comprising: a base, a bracket, a rotating mechanism disposed between the base and the bracket, a pivoting mechanism and a tilting mechanism disposed between the bracket and the display screen, the rotating mechanism, the pivoting mechanism, and The tilting mechanism causes the supporting device to respectively provide three-direction rotation, the pivoting mechanism comprises a connecting frame and a rotating bracket rotatably connected with the connecting frame, the tilting mechanism comprises a rotating shaft, the connecting frame is connected to the rotating shaft and can be coupled with the rotating shaft The rotation is improved in that the pitching mechanism further includes a fitting member, the fitting member includes a connecting portion and a fitting portion bent along the one end of the connecting portion, and the rotating shaft of the pitching mechanism is interference-fitted with the sleeve of the pitching mechanism In the fitting part of the fitting, the pivoting mechanism further comprises a movable washer and a follower washer which are relatively rotatable, and one of the active washer and the follower washer is provided with a positioning protrusion, and the other is The positioning hole is matched with the positioning protrusion, and the active gasket is fixed on the rotating bracket, and the following gasket is fixed on the connecting frame. The supporting device according to claim 1, wherein the bracket is stamped from a galvanized steel sheet. The support device of claim 1, wherein a surface of the connecting frame of the pivoting mechanism is a circular arc surface, and the rotating bracket is rotatably connected to the connecting bracket, and the rotating bracket is fixedly connected with a limiting member. The limiting member abuts against the arc surface of the connecting frame, and defines a rotation range of the rotating bracket. The support device of claim 3, wherein the active gasket and the follower gasket are provided with a tab, and the active gasket is connected to the rotating bracket by a tab and can be rotated with the rotating bracket Rotating together, the follower gasket is attached to the connecting frame by a tab. The support device of claim 1, wherein the rotating mechanism And a connecting frame fixedly connected to the base, the connecting frame of the rotating mechanism is provided with a limiting surface, the bracket is provided with a resisting surface, the limiting surface abuts the resisting surface, and the bracket is defined relative to the bracket The angle of rotation of the connecting frame of the rotating mechanism. The support device of claim 5, wherein the rotating mechanism further comprises a torsion spring, the torsion spring comprising a first mounting portion and a second mounting portion, the first mounting portion being inserted into the connecting frame of the rotating mechanism In the hole, the second mounting portion abuts against the bracket, and the torsion spring provides a predetermined torque. The support device of claim 1, wherein the bracket has a U-shaped cross section. The support device of claim 7, wherein the support device further comprises a plastic sleeve, and the plastic sleeve is wrapped on the bracket. The supporting device according to claim 1, wherein the tilting mechanism further comprises a snap ring, the snap ring is C-shaped, and the end of the rotating shaft of the tilting mechanism is provided with a card slot in a circumferential direction, and the snap ring is engaged In the card slot.