A method for converting curved and straight screen support

Abstract

The invention discloses a method for converting support of a curved or straight screen, which belongs to the technical field of display accessories and is realized by a curved or straight screen dual-purpose bracket, comprising the following steps: S1, installing a straight screen: rotating and adjusting the pitch angle of the curved or straight screen dual-purpose bracket to make the supporting surface on the curved or straight screen dual-purpose bracket in a flat state, fixing the straight screen to the supporting surface, and completing the installation of the straight screen; S2, installing a curved screen: removing the straight screen from the supporting surface, rotating the curved or straight screen dual-purpose bracket in the opposite direction to adjust the pitch angle to make the supporting surface become a curved surface, fixing the curved screen to the supporting surface, and completing the installation of the curved screen; S3, adjusting the curvature of the curved surface: removing the curved screen from the supporting surface, rotating the curved or straight screen dual-purpose bracket in the opposite direction to adjust the pitch angle to change the curvature of the supporting surface until the curvature is the same as that of another curved screen, fixing the other curved screen to the supporting surface, and completing the installation of curved screens with different curvatures.

Description

Technical Field

[0001] The invention relates to the technical field of display accessories, and in particular to a method for converting curved and straight screen supports. Background Art

[0002] Monitors are used for displaying pictures and images and are widely used in work and life. Monitors all need brackets for support and installation to meet the display and viewing needs in different directions or positions. In order to improve the display effect of the monitor, monitors with curved screens are now used. The curved screen expands the viewing angle of the human eye. However, large-sized curved screens cannot be supported and installed using existing straight-screen monitor brackets. Therefore, different brackets need to be used for installation of display screens of different shapes, which is cumbersome in actual use and cannot meet the diverse daily use needs. Now there is a need for a monitor bracket that can be transformed into a curved or straight shape to meet the use of supporting both straight and curved displays.

[0003] The existing patent with announcement number CN218647574U discloses a display screen that can freely convert between a curved surface and a straight surface. An upper limit bracket and a lower limit bracket extending laterally are arranged on the back of the base plate. A vertically downward rotating module is arranged between the upper limit bracket and the lower limit bracket. The rotating module includes a traction gear and a rotating gear. A rotating handle is arranged on the rotating gear. Traction gears are arranged at both ends of the rotating gear. A cable is connected to the traction gear. The cables at both ends are connected to a traction bar. The traction bar is arranged on the base plate. Both ends of the upper limit bracket and the lower limit bracket extend to both ends of the base plate. A connecting block is also arranged on the base plate. Both ends of the upper limit bracket and the lower limit bracket can be slidably connected to the connecting block. The display screen that can freely convert between a curved surface and a straight surface has a complex structure for converting between a curved surface and a straight surface, and the degree of fit between the curved surface and the curved screen is low, which affects support and aesthetics. Summary of the invention

[0004] The purpose of the present invention is to provide a method for converting a curved screen support to a straight screen, which solves the problem that the existing curved and straight dual-purpose bracket has a low degree of fit with the curved screen and the curved and straight conversion structure is complex.

[0005] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is as follows:

[0006] A method for converting a curved screen support to a straight screen support is implemented by a curved screen dual-purpose bracket, comprising the following steps:

[0007] S1. Installing a straight screen: rotating and adjusting the pitch angle of the curved and straight screen dual-purpose bracket to make the supporting surface of the curved and straight screen dual-purpose bracket in a flat state, fixing the straight screen to the supporting surface, and completing the installation of the straight screen;

[0008] S2, installing the curved screen: remove the straight screen from the support surface, rotate the support in the opposite direction to adjust the pitch angle of the support for both straight and curved screens, so that the support surface becomes a curved surface, and fix the curved screen to the support surface to complete the installation of the curved screen;

[0009] S3. Adjusting the curvature of the curved surface: remove the curved screen from the supporting surface, and rotate the curved and straight screen dual-purpose bracket in the opposite direction to adjust the pitch angle so that the curvature of the curved surface of the supporting surface changes until it is the same as the curvature of the other curved screen, and fix the other curved screen to the supporting surface to complete the installation of curved screens with different curvatures.

[0010] Furthermore, the curved and straight screen dual-purpose bracket includes a base, a support arm, a joint transmission mechanism and a curved and straight support conversion structure, one end of the support arm is connected to the base, the joint transmission mechanism is arranged on the other end of the support arm, and the curved and straight support conversion structure is arranged on the joint transmission mechanism, the curved and straight support conversion structure includes a plurality of support members, a plurality of flip assemblies and a connecting rod assembly, the flip assemblies are arranged on the support members one by one, and a plurality of the flip assemblies are rotatably connected head to tail, so that a plurality of the support members form a supporting surface, the connecting rod assembly drives the flip assemblies to rotate, the flip assembly includes a fixed block, a telescopic rod and a pivot, the fixed block is arranged on the support member, two adjacent fixed blocks are hinged by the pivot, and the two ends of the telescopic rod are rotatably connected to the two adjacent fixed blocks respectively, so that the shape of the supporting surface can be changed, and the straight surface or curved screens with different curvatures can be supported by the change of the supporting surface;

[0011] In step S1, the support member is pushed to rotate around the axis of the joint transmission mechanism, the joint transmission mechanism drives the connecting rod assembly to extend and retract, the connecting rod assembly pulls the support member at the end of the support surface to rotate, and the support member at the end is driven by the flip assembly to rotate the remaining support members at the same time, so that the support surface is straightened into a flat plate.

[0012] Furthermore, the flip assembly further comprises a first elastic element, the first elastic element is sleeved on the pivot, and two ends of the first elastic element respectively contact with two adjacent fixing blocks to provide a driving force for restoring the support surface;

[0013] In step S2 or S3, the joint transmission mechanism rotates in the opposite direction around the axis, and the flip assembly is bent inwardly toward the side of the support surface where the screen is installed under the action of the first elastic element to form the support surface with a curved surface.

[0014] Furthermore, the connecting rod assembly includes a plurality of connecting rods and push-pull rods, the plurality of connecting rods are sequentially connected end to end to form a rod group, the push-pull rod is rotatably connected to one end of the rod group, and the other end of the rod group is rotatably connected to the fixed block at the end;

[0015] In step S1, S2 or S3, the connecting rod assembly drags the fixed block at the end to rotate, and the plurality of connecting rods deform along with the supporting surface, and the entire supporting surface is deformed by dragging the fixed block at the farthest end.

[0016] Furthermore, the joint transmission mechanism includes a base, a guide seat and a guide block, the guide seat is arranged on the base, the base is connected to the support arm, the guide block is slidably connected to the guide seat, and the guide block drives the connecting rod assembly to telescopic movement, which is used to push the push-pull rod to drive the support surface to deform; the end of the push-pull rod is provided with a groove structure formed by two protrusions, which is convenient for dragging the push-pull rod movement, and also plays a role in limiting the push-pull rod.

[0017] Preferably, the end of the push-pull rod is provided with a groove structure formed by two protrusions, the guide seat is arranged in the groove structure, and an inclined portion is provided on one side wall of the guide seat for limiting the range of motion of the connecting rod assembly.

[0018] Preferably, an inclined surface is provided on the inner side wall of the groove structure, and the inclined surface forms a wedge fit with the inclined portion, so that the rotational motion around the axis is converted into the movement of dragging the push-pull rod through the wedge sliding fit.

[0019] As a better option, the joint transmission mechanism also includes a pressure block and a second elastic element. The guide seat is provided with a sliding groove for the guide block to slide. One side of the sliding groove penetrates the side wall of the guide seat to form an opening. The pressure block is slidably connected to the opening. The second elastic element pushes the pressure block to squeeze the guide block, providing a damping force to limit the movement of the guide block, thereby ensuring the stability of the support surface.

[0020] As a more preferred embodiment, the joint transmission mechanism also includes a rotating shaft structure and a frame, the frame is arranged at both ends of the base, the frame is connected to the base through the rotating shaft structure, and the frame is arranged around the guide seat, and the supporting surface is driven to deform through the rotating shaft structure.

[0021] As a more preferred embodiment, the frame is provided with a through hole, and the push-pull rod is slidably connected to the through hole for guiding the push-pull rod when it moves.

[0022] The beneficial effects of the present invention are:

[0023] (1) The curved-to-straight screen support conversion method realizes the shape change of the support surface by pushing the support surface to rotate around the axis. The support surface can be freely switched between a flat surface and a curved surface, and can support screens of different shapes. After the support surface becomes a curved surface, the curvature can be adjusted by pitching the support surface, so that the support surface can meet the use of curved screens of different sizes and curvatures. The conversion operation is simple and convenient, and the support surface has a strong bearing capacity.

[0024] (2) The method for converting the support of a curved screen to straight screen has a joint transmission mechanism on the support arm, and a curved-to-straight support conversion structure is installed on the joint transmission mechanism. The curved-to-straight support conversion structure includes a plurality of support members, a flip assembly and a connecting rod assembly arranged on the support members in a one-to-one correspondence. The support members are connected end to end through the flip assembly, and adjacent support members and flip assemblies are combined into a pivot structure with an adjustable angle. One end of the connecting rod assembly is driven by the joint transmission mechanism, and the other end is connected to the outermost flip assembly, which is used to drive the plurality of support members to rotate simultaneously to change the curvature of the support surface formed by the plurality of support members, so that the dual-purpose bracket can be used to support a straight or curved screen. The screen is supported at multiple points by the plurality of support members, thereby ensuring the stability and high load-bearing capacity of the supported screen. The angles between the plurality of support members are adjustable, so that the curvature of the formed support surface is adjustable, which can meet the needs of curved screens with different curvatures.

[0025] (3) The joint transmission mechanism in the curved-to-straight screen support conversion method includes a guide seat and a guide block. The guide block is slidably connected in the guide seat. The guide seat and the push-pull rod in the connecting rod assembly are wedge-shaped and slidably matched. The push-pull rod is dragged by the guide seat, and the push-pull rod drives the support member to complete the shape transformation of the support surface. An inclined portion is provided on one side wall of the guide seat, and an inclined surface is provided on the push-pull rod. The position of the push-pull rod is changed by the contact between the inclined portion and the inclined surface, thereby changing the shape of the support surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 An axonometric view of the curved-to-straight screen conversion bracket provided by the present invention;

[0027] Figure 2 A front view of the curved-to-straight screen conversion bracket provided by the present invention;

[0028] Figure 3 A side view of the curved-to-straight screen conversion bracket provided by the present invention;

[0029] Figure 4 A top view of the curved-to-straight screen conversion bracket provided by the present invention;

[0030] Figure 5 for Figure 2 Section along line AA;

[0031] Figure 6 for Figure 4 A partial enlarged view of the upper part B;

[0032] Figure 7 An axonometric diagram of the joint transmission mechanism provided by the present invention;

[0033] Figure 8 A front view of the joint transmission mechanism provided by the present invention;

[0034] Fig. 9 for Figure 8 Sectional view along the CC line;

[0035] Fig.10 for Figure 8 Cross-section along line DD.

[0036] Reference numerals:

[0037] 1. Base; 2. Support arm; 3. Joint transmission mechanism; 31. Base; 32. Rotating shaft structure; 33. Frame; 331. Through hole; 34. Guide seat; 341. Inclined portion; 35. Guide block; 36. Pressing block; 37. Second elastic element; 38. Torsion spring; 4. Curved-straight support conversion structure; 41. Support member; 42. Flip assembly; 421. Fixed block; 422. Telescopic rod; 423. Pivot; 424. First elastic element; 43. Connecting rod assembly; 431. Push-pull rod; 432. Connecting rod; 433. Fixed pin; 434. Groove structure. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Embodiment 1

[0040] like Figure 1-Figure 10As shown, the present embodiment discloses a method for converting a support of a curved screen into a straight screen, which is implemented by a curved and straight screen dual-purpose bracket, and includes the following steps: S1, installing a straight screen: rotating and adjusting the pitch angle of the curved and straight screen dual-purpose bracket, so that the supporting surface on the curved and straight screen dual-purpose bracket is in a flat state, taking the straight screen and fixing it to the supporting surface, and completing the installation of the straight screen; S2, installing a curved screen: removing the straight screen from the supporting surface, rotating the curved and straight screen dual-purpose bracket in the opposite direction to adjust the pitch angle, so that the supporting surface becomes a curved surface, taking the curved screen and fixing it to the bracket S3, adjustment of the curvature of the curved surface: remove the curved screen from the supporting surface, and rotate the curved and straight screen dual-purpose bracket in the opposite direction to change the curvature of the supporting surface until it is the same as the curvature of the other curved screen, and fix the other curved screen to the supporting surface to complete the installation of curved screens with different curvatures. When the curvature of the supporting surface is adjusted, the supporting surface gradually increases from zero. When the curvature of the supporting surface is zero, it is flat. It is simple and convenient for the user to adjust the curvature of the supporting surface when rotating.

[0041] Furthermore, the curved and straight screen dual-purpose bracket includes a base 1, a support arm 2, a joint transmission mechanism 3 and a curved and straight support conversion structure 4, one end of the support arm 2 is connected to the base 1, the base 1 is placed on the ground to provide a supporting force, the support arm 2 is used to adjust the height of the screen from the ground, the joint transmission mechanism 3 is arranged on the other end of the support arm 2, the curved and straight support conversion structure 4 is arranged on the joint transmission mechanism 3, the curved and straight support conversion structure 4 includes a plurality of support members 41, a plurality of flip assemblies 42 and a connecting rod assembly 43, the flip assemblies 42 are arranged on the support members 41 one by one, and the plurality of flip assemblies 42 are rotatably connected head to tail, so that the plurality of support members 41 A support surface is formed for directly installing a screen. The connecting rod assembly 43 drives the flip assembly 42 to rotate. The flip assembly 42 includes a fixed block 421, a telescopic rod 422 and a pivot 423. The fixed block 421 is arranged on the support member 41. Two adjacent fixed blocks 421 are hinged by the pivot 423. Both ends of the telescopic rod 422 are respectively connected to the two adjacent fixed blocks 421 for rotation. The telescopic rod 422 is provided with damping so that the shape of the support surface can be changed. The flip assembly 42 is used to realize the conversion of the support surface between a curved surface and a straight surface. The curvature of the support surface can be adjusted, so that the support of a straight surface and a curved surface with different curvatures can be realized.

[0042] Among them, in step S1, the support member 41 is pushed to rotate around the axis of the joint transmission mechanism 3, the joint transmission mechanism 3 drives the connecting rod assembly 43 to extend and retract, the connecting rod assembly 43 pulls the support member 41 at the end of the support surface to rotate, and the support member 41 at the end is driven by the flip assembly 42 to rotate the remaining support members 41 at the same time, so that the support surface is straightened into a flat plate.

[0043] Furthermore, the flip assembly 42 also includes a first elastic element 424, which is sleeved on the pivot 423. Both ends of the first elastic element 424 respectively contact with two adjacent fixed blocks 421. The two adjacent fixed blocks 421 are staggered with each other and are arranged at the staggered parts on the pivot 423, so that multiple fixed blocks 421 can form a supporting force along a straight line direction, thereby improving the bearing capacity and stability of the structure. Only one fixed block 421 needs to be supported to achieve the support of the entire supporting surface to the ground. The first elastic element 424 is a torsion spring, which is used to provide a reset force after the multiple support members 41 are deformed.

[0044] In step S2 or S3, the joint transmission mechanism 3 rotates in the opposite direction around the axis, and the flip assembly 42 is bent inwardly to form a curved support surface on the side where the screen is installed under the action of the first elastic element 424.

[0045] Furthermore, the connecting rod assembly 43 includes multiple connecting rods 432 and push-pull rods 431. The multiple connecting rods 432 are connected end to end in sequence to form a rod group. The push-pull rod 431 is rotatably connected to one end of the rod group, and the other end of the rod group is rotatably connected to the fixed block 421 at the end. The rod group is used to transmit the driving force from the push-pull rod 431. The connection points between the multiple connecting rods 432 are opposite to the rotation points on each fixed block 421. The rod group can follow the multiple support members 41 to perform deformation movements.

[0046] In step S1, S2 or S3, the connecting rod assembly 43 drags the fixed block 421 at the end to rotate, and the plurality of connecting rods 432 deform along with the supporting surface.

[0047] Preferably, a fixing pin 433 is provided on the fixing block 421 at the end position of the supporting surface, and the other end of the rod group is rotatably connected to the fixing block 421 through the fixing pin 433. The rod group can rotate and deform along with the supporting surface, thereby ensuring the stability of the deformation driving force transmission and the stability of the supporting surface after being fixed.

[0048] Furthermore, the end of the push-pull rod 431 is provided with a groove structure 434 formed by two protrusions, and the guide seat 34 is arranged in the groove structure 434. The groove structure 434 can limit the rod group, restrict the range of movement of the rod combination, and prevent the rod group from shaking due to external force.

[0049] See Figure 7-Figure 10 Furthermore, the joint transmission mechanism 3 includes a base 31, a guide seat 34 and a guide block 35. The guide seat 34 is arranged on the base 31, the base 31 is connected to the support arm 2, the guide block 35 is slidably connected to the guide seat 34, the guide seat 34 pushes the connecting rod assembly 43 to telescopic movement, and the guide seat 34 simultaneously limits the moving direction of the guide block 35, providing a directional stable driving force to the connecting rod assembly 43.

[0050] Preferably, an inclined portion 341 is provided on one side wall of the guide seat 34, and an inclined surface is provided on the inner wall of the groove structure 434. The inclined surface contacts the inclined portion 341 to form a wedge-shaped sliding fit, which converts the rotation around the axis into movement along the length direction of the support surface, fully utilizing the shaft structure 32 of the curved-to-straight screen support conversion method itself, simplifying the overall structural complexity, and making it easy for users to adjust.

[0051] Preferably, the joint transmission mechanism 3 also includes a pressure block 36 and a second elastic element 37. The guide seat 34 is provided with a sliding groove for the guide block 35 to slide. One side of the sliding groove penetrates the side wall of the guide seat 34 to form an opening. The pressure block 36 is slidably connected to the opening. The second elastic element 37 pushes the pressure block 36 to squeeze the guide block 35. The guide block 35 is subjected to an extrusion force when sliding to prevent the support surface from being deformed by external force. A baffle is also provided at the opening, which is used to press the second elastic element 37 to prevent the pressure block 36 and the second elastic element 37 from falling out.

[0052] More preferably, the slide groove is an arc groove centered on the shaft structure 32, and the guide block 35 is also an arc block, so that the guide block 35 and the push-pull rod 431 form a stable contact during the rotation process to ensure the stability of the curve-to-straight conversion.

[0053] More preferably, the joint transmission mechanism 3 also includes a rotating shaft structure 32 and a frame 33. The frame 33 is arranged at both ends of the base 31. The frame 33 is connected to the base 31 through the rotating shaft structure 32, so that the curved and straight support conversion structure 4 can rotate with the rotating shaft structure 32 to adjust the curvature of the support surface. A torsion spring 38 is provided around the axis on the rotating shaft structure 32. The torsion spring 38 is used to provide damping for the rotating support surface, thereby realizing follow-up adjustment of the support surface and facilitating user operation. The frame 33 is arranged around the guide seat 34 to prevent foreign objects from invading and getting stuck.

[0054] More preferably, a through hole 331 is provided on the frame 33, and the push-pull rod 431 is slidably connected to the through hole 331. The frame 33 is arranged close to the guide seat 34 to stabilize and guide the push-pull rod 431. The end of the frame 33 is fixedly connected to the support member 41 to provide supporting force for the support member 41.

[0055] The working process of the curved-to-straight screen support conversion method is as follows:

[0056] When supporting a straight screen, the support member 41 is pushed to rotate around the axis of the rotating shaft structure 32, and the inner wall of the groove structure 434 at the end of the push-pull rod 431 on the connecting rod assembly 43 contacts the inclined portion 341 on the guide seat 34. At the same time, the push-pull rod 431 rotates around the axis, and the guide seat 34 pulls the connecting rod assembly 43 to move, and the connecting rod assembly 43 pulls the outermost support member 41 to tighten, so that the support surface formed by the multiple support members 41 is straightened to form a plane; when supporting a curved screen, the support member 41 is pushed to rotate in the opposite direction around the axis of the rotating shaft structure 32, and the pulling force of the guide seat 34 on the connecting rod assembly 43 disappears. The multiple support members 41 shrink under the action of the first elastic element 424, so that the support surface formed by the multiple support members 41 shrinks inward to form a curved surface with an arc, and the arc size of the support surface can be changed by adjusting the rotation angle.

[0057] Embodiment 2

[0058] The present embodiment also discloses a dual-purpose bracket for a curved and straight screen, comprising two curved-straight support conversion structures 4 arranged in a mirror image, the two relatively arranged curved-straight support conversion structures 4 are both mounted on a joint transmission mechanism 3, and two side-by-side combined guide seats 34 and guide blocks 35 are provided on a base 31 of the joint transmission mechanism 3, wherein the two guide blocks 35 are arranged in a mirror image, and the curved-straight support conversion structures 4 on the left and right sides are respectively pushed to move by the two guide blocks 35, thereby driving the two connected multiple support members 41 to change their angles, thereby changing the curvature of the supporting surface, and by arranging the curved-straight support conversion structures 4 in a mirror image, the coverage of the supporting surface can be larger and the stability of the supported display screen can be better.

[0059] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may also change and modify the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention.

Claims

1. A method for converting a curved screen support to a straight screen support, implemented by a curved screen dual-purpose bracket, characterized in that: The following steps are involved: S1. Installing a straight screen: rotating and adjusting the pitch angle of the curved and straight screen dual-purpose bracket to make the supporting surface of the curved and straight screen dual-purpose bracket in a flat state, fixing the straight screen to the supporting surface, and completing the installation of the straight screen; S2, installing the curved screen: remove the straight screen from the support surface, rotate the support in the opposite direction to adjust the pitch angle of the support for both straight and curved screens, so that the support surface becomes a curved surface, and fix the curved screen to the support surface to complete the installation of the curved screen; S3, adjusting the curvature of the curved surface: remove the curved screen from the supporting surface, and rotate the curved and straight screen dual-purpose bracket in the opposite direction to adjust the pitch angle, so that the curvature of the curved surface of the supporting surface changes until it is the same as the curvature of the other curved screen, and fix the other curved screen to the supporting surface to complete the installation of curved screens with different curvatures; The curved and straight screen dual-purpose bracket comprises a base (1), a support arm (2), a joint transmission mechanism (3) and a curved and straight support conversion structure (4); one end of the support arm (2) is connected to the base (1); the joint transmission mechanism (3) is arranged on the other end of the support arm (2); the curved and straight support conversion structure (4) is arranged on the joint transmission mechanism (3); the curved and straight support conversion structure (4) comprises a plurality of support members (41), a plurality of flipping assemblies (42) and a connecting rod assembly (43); the flipping assemblies (42) are arranged on the support members (41) in a one-to-one correspondence; and the plurality of The flip assembly (42) is rotatably connected head to tail, so that the plurality of support members (41) form a support surface, the connecting rod assembly (43) drives the flip assembly (42) to rotate, the flip assembly (42) comprises a fixed block (421), a telescopic rod (422) and a pivot (423), the fixed block (421) is arranged on the support member (41), two adjacent fixed blocks (421) are hinged by the pivot (423), and two ends of the telescopic rod (422) are respectively rotatably connected to the two adjacent fixed blocks (421), so that the shape of the support surface can be changed; In step S1, the support member (41) is pushed to rotate around the axis of the joint transmission mechanism (3), and the joint transmission mechanism (3) drives the connecting rod assembly (43) to extend and retract. The connecting rod assembly (43) pulls the support member (41) at the end of the support surface to rotate, and the support member (41) at the end is driven by the flip assembly (42) to rotate the remaining support members (41) at the same time, so that the support surface is straightened into a flat plate.

2. The method for converting a curved screen support to a straight screen according to claim 1, characterized in that: The flip assembly (42) further comprises a first elastic element (424), wherein the first elastic element (424) is sleeved on the pivot (423), and two ends of the first elastic element (424) respectively contact the two adjacent fixing blocks (421); In step S2 or S3, the joint transmission mechanism (3) rotates in the opposite direction around the axis, and the flip assembly (42) is bent inwardly toward the side of the support surface where the screen is installed under the action of the first elastic element (424) to form a curved support surface.

3. The method for converting a curved screen support to a straight screen according to claim 1, characterized in that: The connecting rod assembly (43) comprises a plurality of connecting rods (432) and a push-pull rod (431), wherein the plurality of connecting rods (432) are connected end to end in sequence to form a rod group, wherein the push-pull rod (431) is rotatably connected to one end of the rod group, and the other end of the rod group is rotatably connected to the fixed block (421) at the end; In step S1, S2 or S3, the connecting rod assembly (43) drags the fixed block (421) at the end to rotate, and the plurality of connecting rods (432) deform along with the supporting surface.

4. The method for converting a curved screen support to a straight screen according to claim 3, characterized in that: The joint transmission mechanism (3) comprises a base (31), a guide seat (34) and a guide block (35); the guide seat (34) is arranged on the base (31); the base (31) is connected to the support arm (2); the guide block (35) is slidably connected to the guide seat (34); and the guide seat (34) drives the connecting rod assembly (43) to telescopically move.

5. The method for converting a curved screen support to a straight screen according to claim 4, characterized in that: The end of the push-pull rod (431) is provided with a groove structure (434) formed by two protrusions, the guide seat (34) is arranged in the groove structure (434), and an inclined portion (341) is arranged on a side wall of the guide seat (34).

6. The method for converting a curved screen support to a straight screen according to claim 5, characterized in that: An inclined surface is provided on the inner side wall of the groove structure (434), and the inclined surface forms a wedge-shaped fit with the inclined portion (341).

7. The method for converting a curved screen support to a straight screen according to claim 4, characterized in that: The joint transmission mechanism (3) further comprises a pressing block (36) and a second elastic element (37); the guide seat (34) is provided with a sliding groove for the guide block (35) to slide; one side of the sliding groove penetrates the side wall of the guide seat (34) to form an opening; the pressing block (36) is slidably connected to the opening; and the second elastic element (37) pushes the pressing block (36) to squeeze the guide block (35).

8. The method for converting a curved screen support to a straight screen according to claim 7, characterized in that: The joint transmission mechanism (3) further comprises a rotating shaft structure (32) and a frame (33); the frame (33) is arranged at two ends of the base (31); the frame (33) is connected to the base (31) via the rotating shaft structure (32); and the frame (33) is arranged around the guide seat (34).

9. The method for converting a curved screen support to a straight screen according to claim 8, characterized in that: The frame (33) is provided with a through hole (331), and the push-pull rod (431) is slidably connected to the through hole (331).

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