Screen supporting device

Abstract

The utility model provides a screen supporting device which comprises a supporting structure comprising a stand column support and a screen support. The adjusting structure comprises a center rotating shaft, a fixed gasket and a rotating gasket, the center rotating shaft is fixedly connected with the stand column support and rotationally connected with the screen support, the fixed gasket is fixedly arranged on the outer wall of the center rotating shaft, and the rotating gasket movably sleeves the outer wall of the center rotating shaft and makes contact with the fixed gasket; the clamping structure is connected with the screen support and can move relative to the adjusting structure to clamp the rotating gasket, the rotating gasket is fixed relative to the screen support, then relative friction force is generated between the rotating gasket and the fixed gasket, the friction force of the whole adjusting structure is increased, and then the adjusting structure can support a heavier screen.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of screen support devices, in particular to a screen support device. BACKGROUND

[0002] The existing screen support bracket is generally only applicable to screens of the same size, and only individual brackets can be applicable to screens of different sizes. The gravity of screens of different sizes is different, so in order to install screens of different sizes on the screen support bracket, the hinge and torsional spring torsion are usually adjustable to adapt to the weight of screens of different sizes, thereby ensuring that the screen does not occur to be tilted or lowered. However, when replacing screens of different sizes on the existing screen support bracket, an external adjusting wrench is usually used to adjust the pressure of the nut, increase or decrease the friction of the hinge, so that the friction can match the corresponding size screen support torsion, thereby realizing the replacement of screens of different sizes. However, this way of adjusting the friction needs the user to constantly manually adjust, which is time-consuming and laborious, resulting in poor user experience. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the purpose of the present application is to provide a screen support device to solve or partially solve the problems in the background art.

[0004] In order to achieve the above purpose, the present application provides a screen support device, which comprises:

[0005] The support structure comprises a stand bracket and a screen bracket.

[0006] The adjusting structure comprises a center shaft, a fixed washer and a rotating washer. The center shaft is fixedly connected with the stand bracket and rotatably connected with the screen bracket. The fixed washer is fixedly arranged on the outer wall of the center shaft. The rotating washer is movably sleeved on the outer wall of the center shaft and in contact with the fixed washer.

[0007] The clamping structure is connected with the screen bracket. The clamping structure can move relative to the adjusting structure so that the clamping structure is in a first state or a second state. The first state is that the clamping structure clamps the rotating washer so that the rotating washer is fixed relative to the screen bracket. The second state is that the clamping structure is located between the rotating washer and the support structure so that the rotating washer can rotate relative to the screen bracket.

[0008] Optionally, the drive structure is connected with the screen bracket and the clamping block, and is configured to drive the clamping structure to move relative to the adjusting structure.

[0009] Optionally, the adjusting structure further comprises a gasket set, the gasket set is located between the rotating gasket and the screen support, the gasket set comprises a first gasket and a second gasket, the first gasket is fixedly arranged on the outer wall of the central rotating shaft, and the second gasket is movably sleeved on the outer wall of the central rotating shaft and fixedly connected with the screen support.

[0010] Optionally, the clamping structure comprises a clamping frame and a clamping slider, the clamping frame is connected with the screen support, one end of the clamping slider is located in the clamping frame, the other end of the clamping slider passes through the screen support and is connected with the driving structure, and the clamping slider can slide along the inner wall of the clamping frame until the rotating gasket is clamped.

[0011] Optionally, the clamping slider comprises a clamping part and a sliding part, the sliding part is located in the clamping frame, and the clamping part protrudes from one side of the clamping frame close to the rotating gasket, the rotating gasket is provided with a rotating gap, and when the clamping slider moves relative to the adjusting structure, the clamping part can be clamped into the rotating gap to prevent the rotating gasket from rotating relative to the screen support.

[0012] Optionally, the clamping structure further comprises a first elastic member, one end of the first elastic member is connected with the inner wall of the clamping frame, and the other end of the first elastic member is connected with the clamping slider, and when the driving structure drives the clamping slider to move towards the adjusting structure, the clamping slider extrudes the first elastic member.

[0013] Optionally, the clamping part can move relative to the adjusting structure under the driving of the driving structure to make the clamping part in a third state or a fourth state, the third state is that the clamping part is located between the rotating gasket and the screen support, and the fourth state is that the clamping part is clamped into the rotating gap after the driving structure drives the clamping slider to move towards the adjusting structure.

[0014] Optionally, the screen support is provided with a first gap, and the clamping slider further comprises a protruding part, one end of the protruding part is connected with the sliding part, and the other end of the protruding part passes through the first gap and is connected with the driving structure.

[0015] Optionally, the driving structure comprises a driving slider and a screen slider connected with each other, the screen slider is movably connected with the screen support and can move relative to the screen support, and the driving slider is slidingly connected with one side of the screen support away from the adjusting structure, the driving slider can move towards the protruding part under the pushing action of the screen slider until the driving slider is in contact with the protruding part and pushes the protruding part to move towards the adjusting structure.

[0016] Optionally, the driving structure comprises a driving handle, the clamping slider is in sliding connection with the screen support, the driving handle is fixedly connected with the clamping slider, the driving handle can drive the clamping slider to slide along the screen support, and the driving handle can drive the clamping slider to move towards the rotating gasket or away from the rotating gasket.

[0017] Optionally, the clamping slider comprises a clamping portion and a sliding portion, the clamping portion is located on a side of the rotating gasket away from the screen support, the screen support is provided with a second gap, and the rotating gasket is provided with a rotating gap, when the driving handle drives the clamping slider to move towards the rotating gasket, the sliding portion partially extends into the second gap and abuts against the screen support, and at the same time, the clamping portion extends into the rotating gap to prevent the rotating gasket from rotating relative to the screen support.

[0018] As can be seen from the above, the screen support device provided by the application comprises a supporting structure, an adjusting structure, a clamping structure and a driving structure, the screen support is used for mounting a screen, when the screen to be mounted is within a normal design range, the friction of the adjusting structure is also within a normal design range, at this time, the adjusting structure can support the weight of the screen without any operation; when a screen with a larger size and a heavier weight is replaced, the driving structure drives the clamping slider to move relative to the adjusting structure and then clamps the rotating gasket, so that the rotating gasket is fixed relative to the screen support, and the fixed gasket is fixed with the central rotating shaft, when the screen has a downward bending tendency due to gravity, the screen support rotates relative to the central rotating shaft under the action of the weight of the screen, at this time, the rotating gasket rotates together with the screen support relative to the central rotating shaft and the fixed gasket fixed on the central rotating shaft, so that the relative friction between the rotating gasket and the fixed gasket is generated, and then the friction of the entire adjusting structure is increased, so that the increased friction can support the weight of the replaced heavier screen, and then the downward bending of the screen is inhibited, so that the screen support device can automatically adjust the friction of the adjusting structure according to the weight of the replaced screen, to automatically adapt to the screen with different weights, so as to ensure that the screen does not appear to be bent down, and at the same time, the entire process does not need to be manually adjusted by the user, and the use experience of the user is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 Principle diagram for calculating the angle of the eye to the center and the bottom end of the screen;

[0021] Figure 2 A schematic diagram illustrating the principle of calculating the applicable user height;

[0022] Figure 3 A schematic diagram illustrating a real-world application scenario for the screen support device;

[0023] Figure 4 A schematic diagram illustrating the principle of calculating the forward and backward thrust of a small-sized screen;

[0024] Figure 5 A schematic diagram illustrating the principle of calculating the forward and backward thrust of a large-size screen;

[0025] Figure 6 This is a schematic diagram of the screen support device according to an embodiment of this application;

[0026] Figure 7 A schematic diagram of the screen support device after the screen is installed in an embodiment of this application;

[0027] Figure 8 Included with instruction manual Figure 7 A magnified view of part A in the diagram;

[0028] Figure 9 This is a partial exploded view of the screen support device according to an embodiment of this application;

[0029] Figure 10 This is a partial schematic diagram of the screen support device according to an embodiment of this application after the clamping structure has been removed;

[0030] Figure 11 This is a partial schematic diagram of the clamping structure in an embodiment of this application when the rotating shim is not clamped;

[0031] Figure 12 This is a schematic diagram of the driving structure of the screen support device according to an embodiment of this application;

[0032] Figure 13 This is a partial side view of the screen support device according to an embodiment of this application;

[0033] Figure 14 This is a partial schematic diagram of another driving mode of the screen support device according to an embodiment of this application;

[0034] Figure 15 A partial schematic diagram of another driving mode of the screen support device according to an embodiment of this application, without the clamping structure;

[0035] Figure 16 A first partial schematic diagram of the screen support device mounting housing according to an embodiment of this application;

[0036] Figure 17Second partial view of the screen support device of the present application with the housing installed;

[0037] Figure 18 Second partial view of the screen support device of the present application with the housing installed;

[0038] Figure: 1, screen to be installed; 2, support structure; 21, column bracket; 22, screen bracket; 3, adjustment structure; 31, rotating washer; 311, rotating gap; 32, fixed washer; 33, compression nut; 34, central rotating shaft; 35, washer set; 351, first washer; 352, second washer; 4, clamping structure; 41, first elastic member; 42, clamping frame; 43, clamping slider; 431, extension; 432, sliding part; 433, clamping part; 5, drive structure; 51, drive slider; 52, screen slider; 521, push rod; 522, trigger member; 53, second elastic member; 54, drive handle; 55, locking screw; 6, housing; 61, sliding hole. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0040] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be understood as the usual meaning understood by those skilled in the art to which the present application belongs. The terms "first", "second" and the like used in the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms "include" or "contain" and the like mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and the like do not mean physical or mechanical connection, but can include electrical connection, whether direct or indirect. The terms "up", "down", "left", "right" and the like are only used to represent relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] The existing screen support bracket adopts a design of hinge and torsional spring, and the torsional force generated by the hinge and torsional spring is used to support the screen gravity, while ensuring smooth rotation and hovering of the screen, and meeting the use of users of different heights.

[0042] According to ergonomics, in order to meet the user's visual comfort to adjust the corresponding screen pitch angle, the recommended distance from the eyes to the display is generally greater than 25 inches (63.5 cm), and the screen height size is 230 mm as shown in Figure 1 ​

[0043] Calculate the angle from the eye to the center and bottom of the screen respectively:

[0044] Therefore, the appropriate range of the elevation angle is about 10°-20°.

[0045] Considering the use scenario of the machine, it is possible that the user is in a standing position for a long time, in which case the elevation angle of the machine will be greatly increased, and the pitch angle range is defined as -5°-25°.

[0046] Assuming that the center of the screen is about 350mm away from the bottom of the machine, as shown in Figure 2 , the screen pitch angle -5°-25° adapts to different user heights (eye position and height can be converted by 0.93), then the calculation result is

[0047] h1=350-635·tan(5°)≈295mm, h2=350+635·tan(25°)≈646mm.

[0048] Assuming the desktop height is 900mm, the storage box is 200mm, then the calculation result is:

[0049] H Max =(900+200+646) / 0.93=1877mm H Min =(900+200+295) / 0.93=1500mm.

[0050] Where H max is the maximum user height, H min is the minimum user height.

[0051] Therefore, different user heights and different scene use habits can be met by adjusting the pitch angle. When the user rotates the screen forward and backward (pitch mode), considering the user's hand feeling when rotating the screen, the forward and backward pushing forces of the screen need to be precisely defined, as shown in Figure 3 and Figure 4 .

[0052] F1 is the forward pushing force, F2 is the backward pushing force, F1 and F2 are usually defined as 1-2Kgf, L1&L2 are the distances from the front and rear pushing positions on the screen to the hinge center, W is the weight of the screen, and L is the distance from the center of gravity of the screen to the hinge center.

[0053] Taking a 15.6-inch screen as an example, F1&F2 are set to 1.5Kgf, and the existing hinge and torsional spring are used to realize the hovering and supporting of the screen weight. The required torsional spring force (Ts Torque) and hinge friction force (TN Torque) are calculated as follows, where ∑M=0 torque balance.

[0054] A. F1 x L1 + Ts Torque = W x L + TN Torque

[0055] 1.5 x 10 + Ts Torque = 2 x 3.7 + TN Torque

[0056] 15 - 7.4 = TN Torque - Ts Torque

[0057] B. F2 x L2 + W x L = TS Torque + TN Torque

[0058] 1.5 x 10 + 2.00 x 3.7 = Ts Torque + TN Torque

[0059] 15 + 7.4 = TN Torque + Ts Torque

[0060] A + B: 30kg = 2 * TN Torque

[0061] Min TN Torque = 15kgf

[0062] Ts Torque = 7.4kgf

[0063] If a large size screen is used, for example, 24 inches, as shown in Figure 5 to meet F1 & F2 = 1.5kgf feel, the 24 inch hinge friction and torsion spring force is calculated, and the calculation is as follows:

[0064] Min TN Torque = 23.7kgf

[0065] Ts Torque = 14.7kgf

[0066] As can be seen from the above, 15.6 inch and 24 inch screens meet the user's feel, and different torsion forces are required for the hinges

[0067] If 15.6 and 24 inches share a hinge, the 15.6 inch screen needs to be designed to prevent automatic rebound and the 24 inch screen needs to be designed to prevent low head, so the design torsion spring force = a, and the friction force = b.

[0068] To meet the 15.6 inch screen without automatic rebound, the front push force F1 = (b-a+(w*L=2*3.7)) / 10 = 1.5 is required.

[0069] To meet the 24 inch screen without automatic low head, the back push force F2 = (a+b-(w*L=3.2*4.6)) / 15.8 = 1.5 is required.

[0070] Combining the above two formulas, it is calculated that b = 23 kgf, a = 15.4 kgf.

[0071] 15.6-inch screen rear thrust F2 = (a + b - (w * L = 2 * 3.7)) / 10 = 3.1 kgf,

[0072] 24-inch front thrust F1 = (b - a + (w * L = 3.2 * 4.6)) / 15.8 = 1.41 kgf.

[0073] According to the normal manufacturing ±0.5 kgf tolerance, the expected thrust specification is 1.0-3.6 kgf. Therefore, when the hand thrust is greater than 2.5 kgf, it will cause the user to adjust the screen to feel uncomfortable, and the user needs to push the screen with a larger force.

[0074] Therefore, the torsion change generated by the existing screen support structure is within the design range, and when the torsion is fixed, the support structure can only meet a single screen or a few screens with little size difference. If a screen of different weight is replaced, such as a small size screen, the screen will be tilted and cannot be suspended at a small angle; if a large size screen is replaced, the screen cannot be suspended at a large angle because the screen weight is too heavy, and the screen will appear to be lowered, which cannot realize the installation of multiple size screens.

[0075] Therefore, if you want to replace screens of different sizes on the screen support structure, you usually need to use an external adjusting wrench to adjust the pressure of the nut, increase or decrease the friction of the hinge, so that the friction can match the corresponding size screen support torsion, thereby realizing the replacement of screens of different sizes. However, this way of adjusting the friction of the screen support structure requires the user to constantly manually adjust, which is time-consuming and laborious, and the user experience is not good.

[0076] Based on this, the present application provides a new type of screen support device which can effectively increase the torsion to support the replacement of screens, and can quickly adapt to the corresponding screen according to different screens without the need for the user to adjust themselves.

[0077] Specifically, as shown in Figure 6 , Figure 7 and Figure 8 , the present application provides a screen support device, comprising:

[0078] a support structure 2 comprising a column bracket 21 and a screen bracket 22;

[0079] an adjusting structure 3 comprising a center shaft 34, a fixed washer 32 and a rotating washer 31, the center shaft 34 is fixedly connected with the column bracket 21 and rotatably connected with the screen bracket 22, the fixed washer 32 is fixedly arranged on the outer wall of the center shaft 34, and the rotating washer 31 is movably sleeved on the outer wall of the center shaft 34 and in contact with the fixed washer 32;

[0080] The clamping structure 4 is connected with the screen support 22, and the clamping structure 4 can move relative to the adjusting structure 3 to make the clamping structure 4 in a first state or a second state. The first state is that the clamping structure 4 clamps the rotating gasket 31 to fix the rotating gasket 31 relative to the screen support 22. The second state is that the clamping structure 4 is located between the rotating gasket 31 and the supporting structure 2 to make the rotating gasket 31 be able to rotate relative to the screen support 22.

[0081] Specifically, the column support 21 is used to contact with a platform, which refers to a place where the screen support device is placed and supported. For example, the screen support device can be placed on a desktop during use.

[0082] The screen support 22 is used to be fixedly connected with the screen 1 to be installed. The screen support 22 includes a first part and a second part. The first part is used to be connected with the center rotating shaft 34 and the driving structure 5, and the second part is used to be fixedly connected with the screen 1 to be installed.

[0083] The center rotating shaft 34 is fixedly connected with the column support 21 and rotationally connected with the screen support 22. In actual use, the screen 1 to be installed can be manually rotated, and then the screen support 22 is driven by the screen 1 to be installed to rotate relative to the center rotating shaft 34, so as to realize the rotation of the screen 1 to be installed relative to the column support 21, and realize the up-down rotation of the screen 1 to be installed, so as to be suitable for users of different heights to manually adjust the pitch angle of the screen.

[0084] The fixed gasket 32 is fixedly arranged on the outer wall of the center rotating shaft 34, which means that the fixed gasket 32 is fixed relative to the center rotating shaft 34. For example, the fixed gasket 32 can be threadedly connected with the outer wall of the center rotating shaft 34 to keep relative fixation.

[0085] The driving structure 5 is connected with the screen support 22 and the clamping mechanism 4, and is configured to drive the clamping mechanism 4 to move relative to the adjusting structure 3.

[0086] The clamping structure 4 can move relative to the adjusting structure 3 under the action of the driving structure 5 to make the clamping structure 4 in the first state or the second state.

[0087] When the clamping structure 4 is in the second state, the clamping structure 4 is located between the rotating pad 31 and the adjusting structure 3. Since the rotating pad 31 movably sheaths the outer wall of the central rotating shaft 34, the rotating pad 31 is not fixed with the central rotating shaft 34 and the screen support 22, and can rotate relative to the central rotating shaft 34 and the screen support 22. Since the fixed pad 32 is fixed on the outer wall of the central rotating shaft 34 and is in contact with the rotating pad 31, when the rotating pad 31 is not clamped, the rotating pad 31 and the fixed pad 32 do not move relative to each other, and the friction between them is small.

[0088] When the driving structure 5 drives the clamping mechanism 4 to move relative to the adjusting structure 3 and clamp the rotating pad 31, the clamping mechanism 4 is in the first state. At this time, the rotating pad 31 is fixed relative to the screen support 22, and the fixed pad 32 is fixed relative to the central rotating shaft 34. When the to-be-installed screen 1 rotates, the screen support 22 rotates relative to the central rotating shaft 34 under the action of the screen. At this time, the rotating pad 31 rotates together with the screen support 22 relative to the central rotating shaft 34 and the fixed pad 32 fixed on the central rotating shaft 34, so that the rotating pad 31 and the fixed pad 32 generate relative friction, thereby increasing the friction of the entire adjusting structure 3.

[0089] Therefore, in the present application, when the clamping slider 43 does not clamp the rotating pad 31, the friction of the entire adjusting structure 3 is small, and the to-be-installed screen 1 with small weight can be supported. When the clamping slider 43 clamps the rotating pad 31, the friction of the entire adjusting structure 3 is increased, and the to-be-installed screen 1 with large weight can be supported.

[0090] In specific implementation, when the to-be-installed screen 1 is within the normal design range (i.e., the screen has small weight), the clamping slider 43 does not need to clamp the rotating pad 31. At this time, the friction of the adjusting structure 3 is also within the normal design range, and the adjusting structure 3 can support the weight of the screen.

[0091] When the screen with larger size and heavier weight is replaced, the driving structure 5 drives the clamping slider 43 to move relative to the adjusting structure 3, and then clamps the rotating pad 31, so that the rotating pad 31 is fixed relative to the screen support 22, and the fixed pad 32 is fixed with the center rotating shaft 34. When the screen has a downward tendency due to gravity, the screen support 22 rotates relative to the center rotating shaft 34 under the action of the weight of the screen. At this time, the rotating pad 31 rotates together with the screen support 22 relative to the center rotating shaft 34 and the fixed pad 32 fixed on the center rotating shaft 34, so that the relative friction force between the rotating pad 31 and the fixed pad 32 is generated, and then the friction force of the entire adjusting structure 3 is increased. The increased friction force can support the weight of the replaced screen, and then inhibit the screen from lowering down. In this way, the screen support device can automatically adjust the friction force of the adjusting structure 3 according to the weight of the replaced screen, so as to automatically adapt to the screen with different weights, and ensure that the screen does not appear to lower down. At the same time, the entire process does not need to be manually adjusted by the user, and the user experience is improved.

[0092] In some embodiments, referring to Figure 9 and Figure 10 , the adjusting structure 3 further comprises a pad set 35 located between the rotating pad 31 and the screen support 22. The pad set 35 comprises a first pad 351 and a second pad 352. The first pad 351 is fixed on the outer wall of the center rotating shaft 34. The second pad 352 is movably sleeved on the outer wall of the center rotating shaft 34 and fixedly connected with the screen support 22.

[0093] Specifically, the first pad 351 is fixed on the outer wall of the center rotating shaft 34, and the second pad 352 is movably sleeved on the outer wall of the center rotating shaft 34 and fixedly connected with the screen support 22. The first pad 351 and the second pad 352 are in contact. In this way, when the screen is rotated, the screen support 22 rotates together with the screen relative to the center rotating shaft 34, and the center rotating shaft 34 remains stationary. At this time, the second pad 352 rotates together with the screen support 22 relative to the center rotating shaft 34 and the first pad 351 fixedly connected with the center rotating shaft 34, so that the first pad 351 and the second pad 352 rotate relative to each other, and then generate a relative friction force. The relative friction force can further increase the friction force of the entire adjusting structure 3, so as to ensure that the to-be-installed screen 1 can hover at a desired angle, or support the weight of the screen with larger size.

[0094] In some embodiments, continuing to refer to Figure 8The clamping structure 4 comprises a clamping frame 42 and a clamping block 43. The clamping frame 42 is connected with the screen support 22. The clamping block 43 is arranged in the clamping frame 42. One end of the clamping block 43 is located in the clamping frame 42. The other end of the clamping block 43 is connected with the driving structure 5 through the screen support 22. The clamping block 43 can slide along the inner wall of the clamping frame 42 until clamping the rotating gasket 31.

[0095] Specifically, the clamping frame 42 is a frame structure penetrating from top to bottom. The clamping frame 42 can be connected with the screen support 22 through bolts.

[0096] One end of the clamping block 43 is located in the clamping frame 42. The clamping block 43 can slide along the inner wall of the clamping frame 42 under the driving of the driving structure 5 until clamping the rotating gasket 31. In this way, the clamping frame 42 limits the movement path of the clamping block 43, ensuring that the movement path of the clamping block 43 will not deviate. Thus, the clamping block 43 can clamp the rotating gasket 31, so that the rotating gasket 31 is fixed relative to the screen support 22. When the screen support 22 rotates with the screen relative to the center rotating shaft 34, the relative friction between the rotating gasket 31 and the fixed gasket 32 can be generated, so as to increase the friction of the entire adjusting structure 3, thereby supporting a larger and heavier screen 1 to be installed.

[0097] In some embodiments, referring to Figure 10 and Figure 11 The clamping block 43 comprises a clamping portion 433 and a sliding portion 432. The sliding portion 432 is located in the clamping frame 42. The clamping portion 433 is protruded from one side of the clamping frame 42 close to the rotating gasket 31. The rotating gasket 31 is provided with a rotating gap 311. When the clamping block 43 moves relative to the adjusting structure 3, the clamping portion 433 can be clamped into the rotating gap 311 to prevent the rotating gasket 31 from rotating relative to the screen support 22.

[0098] Specifically, the sliding portion 432 is located in the clamping frame 42 and can slide along the inside of the clamping frame 42. The clamping portion 433 is protruded from one side of the clamping frame 42 close to the rotating gasket 31.

[0099] The size of the clamping portion 433 matches the size of the rotating gap 311 on the rotating pad 31, so that the clamping portion 433 can be clamped into the rotating gap 311. When the clamping slider 43 moves relative to the adjusting structure 3 under the driving of the driving structure 5, the clamping portion 433 can be clamped into the rotating gap 311, so that the clamping portion 433 is fixed relative to the rotating pad 31, and since the clamping structure 4 is fixed relative to the screen support 22, the rotating pad 31 is fixed to the screen support 22 through the clamping portion 433, so that the clamping of the clamping portion 433 into the rotating gap 311 can prevent the rotating pad 31 from rotating relative to the screen support 22, so that the rotating pad 31 is fixed relative to the screen support 22, and then when the screen support 22 rotates with the screen relative to the central rotating shaft 34, the relative friction between the rotating pad 31 and the fixed pad 32 can increase the friction of the entire adjusting structure 3, so as to support a larger and heavier screen 1 to be installed.

[0100] In some embodiments, continuing to refer to Figure 8 , the clamping structure 4 further comprises a first elastic member 41, one end of the first elastic member 41 is connected with the inner wall of the clamping frame 42, and the other end of the first elastic member 41 is connected with the clamping slider 43. When the driving structure 5 drives the clamping slider 43 to move towards the adjusting structure 3, the clamping slider 43 presses the first elastic member 41.

[0101] Specifically, the arrangement of the first elastic member 41 can limit the position of the clamping slider 43. When the clamping slider 43 is not driven to move, the arrangement of the first elastic member 41 can make the clamping slider 43 contact the screen support 22, so that the screen support 22 can block the clamping slider 43 from moving away from the adjusting structure 3, and at the same time, the elastic force of the first elastic member 41 can prevent the clamping slider 43 from automatically moving towards the adjusting structure 3 without the driving force, so as to ensure that the clamping slider 43 will not move randomly and will not clamp the rotating pad 31 without the driving force, thereby avoiding inconvenience in use.

[0102] When the clamping block 43 is driven by the driving structure 5, the driving structure 5 drives the clamping block 43 to move towards the adjusting structure 3, at this time, the clamping part 433 of the clamping block 43 gradually moves towards the rotating pad 31, and the first elastic member 41 is gradually compressed under the action of the clamping block 43, until the first elastic member 41 is compressed to the limit, at this time, the clamping block 43 does not need to continue to move, and the clamping part 433 is just clamped into the rotating gap 311 of the rotating pad 31. In this case, the first elastic member 41 can limit the moving distance of the clamping block 43, so as to avoid that the clamping part 433 moves too far and exceeds the position of the rotating pad 31, and then the clamping part 433 cannot be clamped into the rotating gap 311.

[0103] In some embodiments, the clamping part 433 can be driven by the driving structure 5 to move relative to the adjusting structure 3 to make the clamping part 433 in a third state or a fourth state, the third state is that the clamping part 433 is located between the rotating pad 31 and the screen support 22, and the fourth state is that the clamping part 433 is clamped into the rotating gap 311 after the driving structure 5 drives the clamping block 43 to move towards the adjusting structure 3.

[0104] Specifically, when the clamping block 43 is driven by the driving structure 5, the driving structure 5 drives the clamping block 43 to move towards the adjusting structure 3, at this time, the clamping part 433 of the clamping block 43 gradually moves towards the rotating pad 31 until the clamping part 433 is clamped into the rotating gap 311.

[0105] When the clamping block 43 is not driven or the clamping block 43 moves towards the adjusting structure 3 under the action of the driving structure 5, the clamping part 433 is located between the rotating pad 31 and the screen support 22, so as to ensure that the rotating pad 31 is not clamped.

[0106] In some embodiments, continuing to refer to Figure 10 , Figure 11 and Figure 12 , the screen support 22 is provided with a first gap, the clamping block 43 further comprises an extending part 431, one end of the extending part 431 is connected with the sliding part 432, and the other end of the extending part 431 is connected with the driving structure 5 after penetrating through the first gap.

[0107] Specifically, the extending part 431 is connected with the sliding part 432, when the clamping block 43 is not driven, one end of the sliding part 432 is in contact with the screen support 22, and the other end is located in the clamping frame 42 and connected with the first elastic member 41.

[0108] The extension part 431 is connected to the sliding part 432 near one side of the screen support 22. The extension part 431 comprises a first extension sub-part and a second extension sub-part, one end of the first extension sub-part is connected to the sliding part 432, and the other end of the first extension sub-part extends out of the first gap. The second extension sub-part is connected to the other end of the first extension sub-part and extends towards the direction of the to-be-mounted screen 1.

[0109] The extension part 431 is arranged on one side of the screen support 22, which can be connected to the driving structure 5 for facilitating the driving of the driving structure 5, and can also limit the sliding part 432 from moving towards the direction away from the adjusting structure 3.

[0110] The driving structure 5 can comprise various structures, and in this application, there can be two driving modes.

[0111] In some embodiments, continuing to refer to Figure 12 and Figure 13 , the driving structure 5 comprises a connected driving slider 51 and a screen slider 52, the screen slider 52 is movably connected to the screen support 22 and can move relative to the screen support 22, the driving slider 51 is slidingly connected to one side of the screen support 22 away from the adjusting structure 3, the driving slider 51 can be driven by the screen slider 52 to move towards the extension part 431 until it contacts the extension part 431 and drives the extension part 431 to move towards the adjusting structure 3.

[0112] Specifically, the screen slider 52 is movably connected to the screen support 22, one end of the screen slider 52 is connected to the driving slider 51, and the other end of the screen slider 52 extends out of the screen support 22. In this way, when the screen slider 52 is driven by an external force, the screen slider 52 moves towards the driving slider 51, thereby driving the driving slider 51 to move towards the extension part 431.

[0113] The driving slider 51 is slidingly connected to one side of the screen support 22 away from the adjusting structure 3, and the shape of the driving slider 51 is adapted to the extension part 431.

[0114] As shown in Figure 12 , the driving slider 51 is provided with a driving gap on one side near the extension part 431, the shape and size of the driving gap are adapted to the second extension sub-part, so that the driving slider 51 gradually moves towards the extension part 431 under the driving action of the screen slider 52, thereby making the second extension sub-part extend into the driving gap.

[0115] The driving slider 51 continues to move towards the direction of the extending part 431 under the driving of the screen slider 52, at this time, the extending part 431 cannot move, so that the extending part 431 blocks the continuous movement of the driving slider 51, so that the continuous movement of the driving slider 51 applies a pushing force to the extending part 431, so that the extending part 431 can only move towards the direction of the adjusting structure 3, thereby moving the clamping slider 43 towards the direction of the adjusting structure 3, and finally clamping the rotating gasket 31 by the clamping slider 43.

[0116] Further, the second extending sub-part can be a triangular structure or a trapezoidal structure, the bottom surface of the triangular structure or the trapezoidal structure is connected with the first extending sub-part, so that the side surface of the second extending sub-part away from the screen support 22 is a slope, and the inclination direction of the slope is inclined from the side of the first extending sub-part away from the screen support 22 to the direction of the screen support 22, so that the surface of the driving gap matched with the slope is also a slope, the arrangement of the two slopes facilitates the smooth entry of the second extending sub-part into the driving gap, and facilitates the driving slider 51 to apply a more appropriate driving force to the extending part 431, and better drives the extending part 431 to move towards the direction of the adjusting structure 3.

[0117] In some embodiments, as Figure 14 and Figure 15 , the clamping structure 4 includes a clamping frame 42 and a clamping slider 43, the clamping slider 43 is partially located in the clamping frame 41, the driving structure 5 includes a driving handle 54, the clamping slider 43 and the clamping frame 42 are in sliding connection with the screen support 22, the driving handle 54 is fixedly connected with the clamping slider 43, the driving handle 54 can drive the clamping slider 43 to slide along the screen support 22, and can drive the clamping slider 43 to move towards the direction of the rotating gasket 31 or away from the rotating gasket 31.

[0118] Specifically, the clamping slider 43 includes a clamping part 433 and a sliding part 432, the clamping part 433 is located on the side of the rotating gasket 31 away from the screen support 22, the screen support 22 is provided with a second gap, and the rotating gasket 31 is provided with a rotating gap 311, when the driving handle 54 drives the clamping slider 43 to move towards the direction of the rotating gasket 31, the sliding part 432 partially extends into the second gap and abuts against the screen support 22, and at the same time, the clamping part 433 extends into the rotating gap 311 to prevent the rotating gasket 31 from rotating relative to the screen support 22.

[0119] Referring to Figure 16 and Figure 17, the driving handle 54 can drive the clamping slider 43 to slide along the screen support 22, so that the user can manually control the position of the driving handle 54 to make the driving handle 54 located at a clamping position or a non-clamping position. The clamping position corresponds to the position of the screen support 22 provided with the second notch, and the non-clamping position corresponds to the position of the screen support 22 not provided with the second notch. Exemplarily, as shown in Figure 7 , M can be the clamping position, and N can be the non-clamping position.

[0120] When the driving handle 54 is located at the clamping position (i.e., the screen support 22 at this position is provided with the second notch), the driving handle 54 is controlled to move away from the adjusting structure 3, at this time, the driving handle 54 drives the driving slider 51 to move towards the rotating gasket 31 (i.e., in the direction indicated by the black arrow in Figure 15 , the sliding part 432 of the clamping slider 43 partially extends into the second notch and abuts against the screen support 22, and the clamping part 433 extends into the rotating notch 311 to prevent the rotating gasket 31 from rotating relative to the screen support 22, so that the screen support 22 can prevent the sliding part 432 from continuing to slide, so as to limit the sliding distance of the clamping slider 43, avoiding that the clamping part 433 cannot be clamped into the rotating notch 311 due to too much sliding of the clamping slider 43, and thus causing clamping failure.

[0121] Referring to Figure 18 , when the driving handle 54 is not located at the clamping position, the driving handle 54 can be fixed with the screen support 22 by the locking screw 55, so as to avoid that the driving handle 54 is moved due to accidental touch, and ensure the stability of the supporting device during use.

[0122] Further, the screen supporting device further comprises a shell 6, the adjusting structure 3, the clamping structure 4 and most of the driving structure 5 are located in the shell 6, and the end of the driving handle 54 not connected with the clamping slider 43 extends out of the shell 6, so as to facilitate user operation.

[0123] In the present application, when the to-be-installed screen 1 is within the normal design range, the friction of the adjusting structure 3 is also within the normal design range, at this time, the adjusting structure 3 can support the weight of the screen.

[0124] When a screen with smaller size and lighter weight is replaced, the clamping slider 43 does not need to clamp the rotating gasket 31.

[0125] When the screen with larger size and heavier weight is replaced, the driving structure 5 drives the clamping slider 43 to move relative to the adjusting structure 3, and then clamps the rotating pad 31, so that the rotating pad 31 is fixed relative to the screen support 22, and the fixed pad 32 is fixed with the center rotating shaft 34. When the screen has a downward bending tendency due to gravity, the screen support 22 rotates relative to the center rotating shaft 34 under the action of the weight of the screen. At this time, the rotating pad 31 rotates together with the screen support 22 relative to the center rotating shaft 34 and the fixed pad 32 fixed on the center rotating shaft 34, so that the relative friction force between the rotating pad 31 and the fixed pad 32 is generated, and the friction force of the entire adjusting structure 3 is increased. The increased friction force can support the weight of the replaced screen, and then suppress the downward bending of the screen. Thus, the screen support device can automatically adjust the friction force of the adjusting structure 3 according to the weight of the replaced screen, so as to automatically adapt to the screen with different weight, and ensure that the screen does not appear to be bent down. At the same time, the entire process does not need to be manually adjusted by the user, and the use experience of the user is improved.

[0126] It should be understood by those of ordinary skill in the art that the above discussion of any embodiment is merely exemplary and is not intended to suggest the scope of the present application (including claims) is limited to these examples; under the idea of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above. In order to be brief, they are not provided in details.

[0127] Embodiments of the present application are intended to cover all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Accordingly, any and all such modifications, variations or equivalents that fall within the spirit and scope of the application are intended to be included within the scope of the application.

Claims

1. A screen support device, characterized in that, include: Support structure, including column brackets and screen brackets; The adjustment structure includes a central rotating shaft, a fixed shim, and a rotating shim. The central rotating shaft is fixedly connected to the column support and rotatably connected to the screen support. The fixed shim is fixed to the outer wall of the central rotating shaft, and the rotating shim is movably sleeved on the outer wall of the central rotating shaft and contacts the fixed shim. A clamping structure is connected to the screen bracket. The clamping structure can move relative to the adjusting structure to be in a first state or a second state. In the first state, the clamping structure clamps the rotating pad so that the rotating pad is fixed relative to the screen bracket. In the second state, the clamping structure is located between the rotating pad and the supporting structure so that the rotating pad can rotate relative to the screen bracket.

2. The screen support device according to claim 1, characterized in that, It also includes a driving structure, which is connected to both the screen bracket and the clamping structure, and is configured to drive the clamping structure to move relative to the adjusting structure.

3. The screen support device according to claim 1, characterized in that, The adjustment structure also includes a shim group, which is located between the rotating shim and the screen bracket. The shim group includes a first shim and a second shim. The first shim is fixed to the outer wall of the central rotating shaft, and the second shim is movably sleeved on the outer wall of the central rotating shaft and fixedly connected to the screen bracket.

4. The screen support device according to claim 2, characterized in that, The clamping structure includes a clamping frame and a clamping slider. The clamping frame is connected to the screen bracket. One end of the clamping slider is located inside the clamping frame, and the other end of the clamping slider passes through the screen bracket and is connected to the driving structure. The clamping slider can slide along the inner wall of the clamping frame until it clamps the rotating pad.

5. The screen support device according to claim 4, characterized in that, The locking slider includes a locking part and a sliding part. The sliding part is located inside the locking frame. The locking part protrudes from the side of the locking frame near the rotating pad. The rotating pad has a rotation notch. When the locking slider moves relative to the adjustment structure, the locking part can be locked into the rotation notch to prevent the rotating pad from rotating relative to the screen bracket.

6. The screen support device according to claim 5, characterized in that, The clamping structure further includes a first elastic element, one end of which is connected to the inner wall of the clamping frame, and the other end of which is connected to the clamping slider. When the driving structure drives the clamping slider to move closer to the adjusting structure, the clamping slider squeezes the first elastic element.

7. The screen support device according to claim 5, characterized in that, The clamping part can move relative to the adjusting structure under the drive of the driving structure so that the clamping part is in a third state or a fourth state. The third state is when the clamping part is located between the rotating pad and the screen bracket. When the driving structure drives the clamping slider to move closer to the adjusting structure, the clamping part is in the fourth state, which is when the clamping part is engaged in the rotating notch.

8. The screen support device according to claim 5, characterized in that, The screen bracket has a first notch, and the locking slider also includes a protrusion. One end of the protrusion is connected to the sliding part, and the other end of the protrusion passes through the first notch and is connected to the driving structure.

9. The screen support device according to claim 8, characterized in that, The driving structure includes a connected driving slider and a screen slider. The screen slider is movably connected to the screen bracket and can move relative to the screen bracket. The driving slider is slidably connected to the side of the screen bracket away from the adjustment structure. The driving slider can move towards the protrusion under the pushing action of the screen slider until it contacts the protrusion and pushes the protrusion towards the adjustment structure.

10. The screen support device according to claim 2, characterized in that, The clamping structure includes a clamping frame and a clamping slider, with the clamping slider partially located within the clamping frame. The driving structure includes a driving handle. Both the clamping slider and the clamping frame are slidably connected to the screen bracket. The driving handle is connected to the clamping slider and can drive the clamping slider and the clamping frame to slide along the screen bracket, and can also drive the clamping slider to move closer to or further away from the rotating pad.

11. The screen support device according to claim 10, characterized in that, The locking slider includes a locking part and a sliding part. The sliding part is located inside the locking frame and is slidably connected to the locking frame. The locking part protrudes from the side of the locking frame near the rotating pad. The locking part is located on the side of the rotating pad away from the screen bracket. The screen bracket has a second notch, and the rotating pad has a rotation notch. When the drive handle drives the locking slider to move towards the rotating pad, the sliding part partially extends into the second notch and abuts against the screen bracket. At the same time, the locking part extends into the rotation notch to prevent the rotating pad from rotating relative to the screen bracket.

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