Arc adjusting mechanism and LED display screen

Abstract

The utility model relates to the technical field of display screens, and provides an arc adjusting mechanism and an LED display screen. The arc adjusting mechanism comprises a first arc adjusting piece, a second arc adjusting piece and a gear assembly, the gear assembly is installed on the first arc adjusting piece, the gear assembly is provided with a rotatable arc adjusting gear, the second arc adjusting piece is provided with an arc-shaped rack, and the arc-shaped rack is meshed with the arc adjusting gear so that the first arc adjusting piece and the second arc adjusting piece can rotate relatively, and radian adjustment is achieved. The arc-adjusting gear is meshed with the arc-shaped rack, radian adjustment is accurate, operation is easy and convenient, and the operation efficiency can be improved; the internal and external radian angles of the first arc-adjusting piece and the second arc-adjusting piece are realized through forward rotation and backward rotation, a bidirectional radian adjusting function is realized, and the arc-adjusting direction is flexible; the length of the arc-shaped rack is large, it is guaranteed that the arc adjusting gear rotates continuously and is still meshed, the radian adjusting range is enlarged, the arc adjusting requirement of arc adjusting of a large-size LED display screen can be met through a single arc adjusting mechanism, and large-radian adjusting operation is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, in particular to an arc adjustment mechanism and an LED display screen. Background Art

[0002] Existing LED (Light-emitting Diode) displays include multiple LED display modules spliced ​​together. Depending on the application, the LED display needs to be spliced ​​into different shapes, such as flat, convex, concave, or S-shaped.

[0003] The market demand for the size of LED display screens is getting larger and larger, but the curvature adjustment of large-sized LED display screens is difficult, the curvature adjustment structure is complex, the manufacturing precision is high, and the operating efficiency is low, resulting in low installation efficiency of LED display screens. Utility Model Content

[0004] The purpose of the utility model is to provide an arc regulating mechanism and an LED display screen, aiming to solve the technical problem of low operating efficiency of the existing arc regulating mechanism.

[0005] In the first aspect, the present application provides an arc-adjusting mechanism, which includes a first arc-adjusting part, a second arc-adjusting part and a gear assembly, wherein the gear assembly is installed on the first arc-adjusting part, the gear assembly has a rotatable arc-adjusting gear, and the second arc-adjusting part is provided with an arc-shaped rack, which is meshed with the arc-adjusting gear to enable the first arc-adjusting part and the second arc-adjusting part to rotate relative to each other.

[0006] The beneficial effects of the arc adjustment mechanism provided by the present invention are as follows: the meshing arc adjustment gear and the arc rack rotate relative to each other, driving the relative angle between the first arc adjustment member and the second arc adjustment member to adjust, thereby realizing arc adjustment. Among them, the meshing structure of the arc adjustment gear and the arc rack is simple, which is conducive to reducing the weight and cost of the arc adjustment mechanism; the arc adjustment gear and the arc rack are meshed, the arc adjustment is accurate, the operation is simple and convenient, and it is conducive to improving the operation efficiency; the arc adjustment gear realizes the inner and outer arc angles of the first arc adjustment member and the second arc adjustment member through forward and reverse rotation, has a two-way arc adjustment function, and is flexible in arc adjustment direction; the arc rack is relatively long, ensuring that the arc adjustment gear continues to rotate and remains meshed, thereby increasing the arc adjustment range. A single arc adjustment mechanism can meet the arc adjustment requirements of large-scale LED display screens, simplify the large arc adjustment operation, and solve the technical problem of low operating efficiency of existing arc adjustment mechanisms.

[0007] In one embodiment, one of the first arc-adjusting member and the second arc-adjusting member is provided with a first guide arc groove, and the other of the first arc-adjusting member and the second arc-adjusting member is at least partially slidably disposed in the first guide arc groove. The first guide arc groove guides the first arc-adjusting member or the second arc-adjusting member to stably rotate relative to each other along a defined direction, thereby avoiding deviation during the adjustment process, thereby improving the stability and accuracy of the entire arc-adjusting mechanism.

[0008] In one embodiment, the first arc-shaped guide groove and the arc-shaped rack are arranged concentrically. The guiding direction of the first arc-shaped guide groove and the rotational direction of the arc-shaped rack are completely consistent, thereby extending the sliding contact length and area between the first arc-shaped guide groove and the first arc-shaped guide groove, which has the same curvature. This enhances the limiting and guiding functions of the first arc-shaped guide groove and further ensures the rotational stability of the first arc-shaped guide groove or the second arc-shaped guide groove.

[0009] In one embodiment, the arc-adjusting mechanism further includes a shielding plate, which covers at least a portion of the slot of the first guide arc groove to form a relatively closed area, thereby preventing the first arc-adjusting component or the second arc-adjusting component located in the first guide arc groove from detaching.

[0010] In one embodiment, the arc-adjusting mechanism further includes a ball, which is positioned between the first arc-adjusting member and the second arc-adjusting member to reduce frictional resistance between the first arc-adjusting member and the second arc-adjusting member, thereby enabling the ball to stably abut the first arc-adjusting member and the second arc-adjusting member, respectively. The ball is limited in rolling contact within the first guide arc groove to ensure that the ball provides reliable rolling contact.

[0011] In one embodiment, the gear assembly includes a rotating shaft, a driving member and the arc adjusting gear. The rotating shaft is rotatably mounted on the first arc adjusting member. The driving member and the arc adjusting gear are installed on the rotating shaft at intervals. The diameter of the driving member is larger than the diameter of the arc adjusting gear. The force required by the staff when rotating the driving member is relatively small, so that the arc adjustment can be completed more easily.

[0012] In one embodiment, the gear assembly further includes a stopper and an elastic member. The stopper is removably mounted on the rotating shaft. The elastic member is compressed, with one end of the elastic member positioned on the rotating shaft. Two sides of the driving member abut against the other end of the elastic member and the stopper, respectively, to ensure the driving member maintains a stable position on the axis of the rotating shaft. The elastic member provides continuous tension, ensuring the stability of the gear assembly under vibration or dynamic load conditions, absorbing and dissipating vibration energy and reducing relative motion between components.

[0013] In one embodiment, an anti-slip portion is provided on the peripheral side of the driving member, which increases the friction between the driving member and other contact surfaces, helps the staff to hold the driving member more stably, reduces slipping, and ensures effective power transmission.

[0014] In one embodiment, the first arc-adjusting member has a mounting cavity with an opening on one side. The arc-adjusting gear is located within the mounting cavity and meshes with the arc-shaped rack through the opening. The mounting cavity provides a closed or semi-closed environment for the arc-adjusting gear, ensuring a more stable and safe rotation process for the arc-adjusting gear. Protecting the arc-adjusting gear from external interference helps improve the accuracy and reliability of the gear transmission.

[0015] In one embodiment, the driving member is located outside the mounting cavity, so that an operator can operate the driving member more easily.

[0016] In one embodiment, a plurality of first angle adjustment holes are provided on the surface of the first arc-adjusting member and one of the driving members, and the plurality of first angle adjustment holes are distributed circumferentially. A first angle adjustment block is provided on the surface of the first arc-adjusting member and the other of the driving members. The first angle adjustment block can be rotatably inserted into any of the first angle adjustment holes, effectively preventing the driving member from accidentally rotating under the influence of external forces or vibrations. Each first angle adjustment hole represents a specific angular position, and the step-by-step adjustment design can greatly simplify the installation and commissioning process.

[0017] In one embodiment, the arc-adjusting mechanism further includes a first support frame, the width of the first support frame is larger than the width of the first arc-adjusting component, the first arc-adjusting component is installed in the middle of the first support frame in the width direction, and the first arc-adjusting component is installed through the first support frame, thereby enhancing the installation strength of the first arc-adjusting component and being able to more effectively disperse and withstand the pressure from the arc-adjusting mechanism and external loads.

[0018] In one embodiment, the arc-adjusting mechanism further includes a second support frame, the width dimension of the second support frame is larger than the width dimension of the second arc-adjusting component, the second arc-adjusting component is installed on the middle part of the second support frame in the width direction, and the second arc-adjusting component is installed through the second support frame. The second support frame can provide a larger contact area and stronger supporting force than the second arc-adjusting component. The second arc-adjusting component is installed through the second support frame, thereby enhancing the installation strength of the second arc-adjusting component, and can more effectively disperse and withstand the pressure from the arc-adjusting mechanism and external loads.

[0019] In one embodiment, both ends of the first arc-adjusting member are respectively installed on the first support frame, and the two can form a more stable structure, which helps prevent the first arc-adjusting member from twisting or tilting when subjected to force, and helps the first arc-adjusting member to disperse the pressure from the arc-adjusting mechanism and external load to the first support frame.

[0020] In one embodiment, the middle portion of the first arc-adjusting member is connected to the first support frame. Since the first arc-adjusting member is rod-shaped, the middle portion of the first arc-adjusting member is supported by the first support frame to prevent it from bending and deforming.

[0021] In one embodiment, both ends of the second arc-adjusting member are respectively installed on the second support frame, and the two can form a more stable structure, which helps prevent the second arc-adjusting member from twisting or tilting when subjected to force, and helps the second arc-adjusting member to disperse the pressure from the arc-adjusting mechanism and external loads to the second support frame.

[0022] In one embodiment, the middle portion of the second arc-adjusting member is connected to the second support frame. Since the second arc-adjusting member is rod-shaped, the middle portion of the second arc-adjusting member is supported by the second support frame to prevent it from bending and deforming.

[0023] In one embodiment, one of the first and second support frames is provided with a second arc-shaped guide groove, the second arc-shaped guide groove and the arc-shaped rack being arranged concentrically, and the other of the first and second support frames is provided with a sliding block, the sliding block being slidably disposed in the second arc-shaped guide groove. The second arc-shaped guide groove guides the first and second support frames to stably rotate relative to each other along a defined direction, thereby preventing deviation during adjustment and improving the stability and accuracy of the entire arc adjustment mechanism.

[0024] In one embodiment, one of the first and second support frames is provided with a plurality of second angle adjustment holes distributed along a first arc, the first arc being concentric with the arc-shaped rack. The other of the first and second support frames is provided with a second angle adjustment block that can be rotated and inserted into any of the second angle adjustment holes, effectively preventing the driver from accidentally rotating due to external forces or vibrations. Each second angle adjustment hole represents a specific angular position, and the step-by-step adjustment design greatly simplifies installation and commissioning.

[0025] In the second aspect, an LED display screen has a length direction and a width direction, and includes a flexible display module, an intermediate frame, two side frames and any one of the above-mentioned arc adjustment mechanisms, and multiple flexible display modules are spliced ​​along the length direction and / or the width direction; the intermediate frame is installed on the back of the flexible display module; the two side frames are installed on the back of the flexible display module, and the two side frames are located at intervals on both sides of the intermediate frame in the length direction; one of the first arc adjustment member and the second arc adjustment member is installed on the intermediate frame, and the other is installed on the side frame.

[0026] The staff only needs to rotate the arc-adjusting gear, and the meshing arc-adjusting gear and the arc-shaped rack will rotate relative to each other, driving the relative angle of the first arc-adjusting component and the second arc-adjusting component to be adjusted, and then driving the relative angle of the middle frame and the side frame to be adjusted. The flexible display module installed on the middle frame and the side frame will bend accordingly, realizing the curvature adjustment efficiently.

[0027] In one embodiment, the intermediate frame includes a first column and two second columns, the first column is installed on the back of the flexible display module, and the two second columns are located at intervals on both sides of the first column in the length direction. The first column and the second column are connected by a cross beam, and the second column and / or the cross beam are used for the installation of the LED display screen, forming a stable frame structure, improving the bearing capacity of the frame structure, enhancing the support force for the flexible display module, and facilitating the splicing of large-size LED display screens.

[0028] In one embodiment, a connecting block is provided at one end of the second column, and a connecting hole is provided at the other end of the second column. The connecting hole is used for inserting the connecting block, which facilitates the rapid assembly and disassembly between two adjacent second columns, realizes a tight connection, and is conducive to splicing two LED display screens.

[0029] In one embodiment, the intermediate frame further includes a first locking rod, which is movably mounted on the second column and / or the crossbeam, and the connecting block has a first locking hole. The first locking rod can be movably extended into the connecting hole and inserted into the first locking hole to fix the connecting block inserted in the connecting hole, thereby achieving a tight connection between two adjacent second columns and convenient disassembly and assembly.

[0030] In one embodiment, a positioning block is provided at one end of the first column, and a positioning hole is provided at the other end of the first column. The positioning hole is used for inserting the positioning block, which facilitates the rapid assembly and disassembly between two adjacent first columns, achieves a tight connection, is conducive to splicing two LED display screens, and simplifies the splicing operation.

[0031] In one embodiment, the first column is connected to at least two of the flexible display modules; the second column is connected to at least two of the flexible display modules; and the side frame is connected to at least two of the flexible display modules, which can facilitate the realization of a large-size LED display screen.

[0032] In one embodiment, the length of the middle frame is greater than the length of the flexible display module. The middle frame can simultaneously support two flexible display modules in its length direction, which is conducive to expanding the size of the LED display screen.

[0033] In one embodiment, the LED display further includes a power distribution box mounted on the first column. The first column serves as the main support structure of the intermediate frame and has high stability and load-bearing capacity, ensuring that the power distribution box operates in a safe environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0035] Figure 1 A schematic structural diagram of an arc adjustment mechanism provided in an embodiment of the present utility model;

[0036] Figure 2 A schematic diagram of the use of the arc adjustment mechanism provided in an embodiment of the utility model;

[0037] Figure 3 An exploded view of the arc adjustment mechanism provided in an embodiment of the present utility model;

[0038] Figure 4 for Figure 1 The cross-sectional view of the arc adjustment mechanism along line AA;

[0039] Figure 5 An exploded schematic diagram of an LED display screen provided by an embodiment of the present utility model;

[0040] Figure 6 A diagram showing the first usage state of the LED display screen provided by the embodiment of the present utility model;

[0041] Figure 7 A diagram showing a second usage state of the LED display screen provided by an embodiment of the present utility model;

[0042] Figure 8A diagram showing a third usage state of the LED display screen provided by an embodiment of the present utility model;

[0043] Figure 9 A diagram showing the fourth usage state of the LED display screen provided by the embodiment of the present utility model;

[0044] Figure 10 A schematic structural diagram of the middle frame of the LED display screen provided by an embodiment of the present utility model;

[0045] Figure 11 A schematic structural diagram of a flexible display module of an LED display screen provided in an embodiment of the present invention.

[0046] Among them, the reference numerals in the figures are:

[0047] X, length direction; Y, width direction; Z, thickness direction;

[0048] 100. Flexible display module;

[0049] 200, middle frame; 210, first column; 211, positioning hole; 220, second column; 221, connecting hole; 230, crossbeam; 240, connecting block; 241, first locking hole; 250, first locking rod; 260, positioning block;

[0050] 300, side frame;

[0051] 400, arc adjustment mechanism; 410, first arc adjustment member; 411, first guide arc groove; 412, mounting cavity; 413, first angle adjustment hole; 420, second arc adjustment member; 421, second limiting groove; 430, gear assembly; 431, arc adjustment gear; 432, rotating shaft; 433, driving member; 434, first angle adjustment block; 435, limiting member; 436, elastic member; 437, anti-slip portion; 438, limiting fastener; 440, arc rack; 450, shielding piece; 461, ball bearing; 462, bead blocking piece; 470, first supporting frame; 471, second guide arc groove; 472, second angle adjustment hole; 480, second supporting frame; 481, sliding block; 482, second angle adjustment block;

[0052] 500. Distribution box. DETAILED DESCRIPTION

[0053] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0054] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, when the phrases "in one embodiment" or "in some embodiments" appear in various places throughout this specification, not all references are to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0055] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0056] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0057] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0058] Example 1

[0059] Combine Figure 1 、 Figure 2 and Figure 3 The present application provides an arc adjustment mechanism 400. The arc adjustment mechanism 400 includes a first arc adjustment member 410, a second arc adjustment member 420, and a gear assembly 430. The gear assembly 430 is mounted on the first arc adjustment member 410, and the gear assembly 430 has a rotatable arc adjustment gear 431. The second arc adjustment member 420 is provided with an arc-shaped rack 440. The arc-shaped rack 440 is engaged with the arc adjustment gear 431 to enable the first arc adjustment member 410 and the second arc adjustment member 420 to rotate relative to each other.

[0060] When the arc adjustment mechanism 400 provided in the present application is used, it is only necessary to rotate the arc adjustment gear 431, and the meshing arc adjustment gear 431 and the arc rack 440 will rotate relative to each other, driving the relative angle between the first arc adjustment component 410 and the second arc adjustment component 420 to adjust, thereby realizing arc adjustment.

[0061] Among them, first, the meshing structure of the arc adjusting gear 431 and the arc-shaped rack 440 is simple, which is conducive to reducing the weight and cost of the arc adjusting mechanism 400; second, the arc adjusting gear 431 and the arc-shaped rack 440 are meshed with each other, the arc adjustment is precise, the operation is simple and convenient, and it is conducive to improving operational efficiency; third, the arc adjusting gear 431 realizes the inner and outer arc angles of the first arc adjusting component 410 and the second arc adjusting component 420 through forward rotation and reverse rotation, has a two-way arc adjustment function, and the arc adjustment direction is flexible; fourth, the length of the arc-shaped rack 440 is relatively large, which ensures that the arc adjusting gear 431 continues to rotate and remains meshed, thereby increasing the arc adjustment range. A single arc adjusting mechanism 400 can meet the arc adjustment requirements of large-size LED display screens and simplify large arc adjustment operations.

[0062] When the arc adjustment mechanism 400 provided in this application is used, Figure 2 The first arc adjustment member 410 and the second arc adjustment member 420 are respectively installed on the two components that need to adjust the arc, so as to change the arc between the two components. For example, the first arc adjustment member 410 is installed on the middle frame 200 of the LED display screen, and the second arc adjustment member 420 is installed on the side frame 300 of the LED display screen. By rotating the arc adjustment gear 431, the arc of the middle frame 200 and the side frame 300 is changed, which in turn drives the curvature of the flexible display module 100 installed on the middle frame 200 and the side frame 300 to change.

[0063] In some embodiments, combined Figure 3 and Figure 4 One of the first arc-adjusting member 410 and the second arc-adjusting member 420 is provided with a first guide arc groove 411, and the other of the first arc-adjusting member 410 and the second arc-adjusting member 420 is at least partially slidably disposed in the first guide arc groove 411. The first guide arc groove 411 guides the first arc-adjusting member 410 or the second arc-adjusting member 420 to stably rotate relative to each other along a defined direction, thereby avoiding deviation during the adjustment process, thereby improving the stability and accuracy of the entire arc-adjusting mechanism 400.

[0064] Specifically, the first arc-adjusting member 410 has a first guide arc groove 411, and the second arc-adjusting member 420 is at least partially slidably disposed in the first guide arc groove 411. It is understood that in other embodiments, the second arc-adjusting member 420 has a first guide arc groove 411, and the first arc-adjusting member 410 is at least partially slidably disposed in the first guide arc groove 411, and this is not intended to be the only limitation.

[0065] In one embodiment, the combination Figure 3 and Figure 4 , the first guide arc groove 411 and the arc rack 440 are arranged in concentric circles. Based on this, the guiding direction of the first guide arc groove 411 and the rotation direction of the arc rack 440 are completely consistent, so the sliding contact length and sliding contact area of ​​the first arc adjustment member 410 or the second arc adjustment member 420 with the first guide arc groove 411 with the same arc are longer, and the sliding contact area is larger, which enhances the limiting and guiding role of the first guide arc groove 411, and further ensures the rotation stability of the first arc adjustment member 410 or the second arc adjustment member 420. At the same time, due to the high rotation stability, the staff does not need to worry about the deviation of the arc adjustment direction or the separation of the arc adjustment gear 431 from the arc rack 440, which reduces the difficulty of operation, can increase the operation speed, and thus improve the operation efficiency.

[0066] Specifically, the first guide arc groove 411 and the arc rack 440 have the same corresponding radius, which reduces the number of structures with different diameter lengths, simplifies the overall structure of the arc adjustment mechanism 400, reduces the space occupied by structures with different diameter lengths, and is conducive to the miniaturization and lightweight design of the arc adjustment mechanism 400.

[0067] It is understood that in other embodiments, the first guide arc groove 411 and the arc rack 440 are arranged in non-concentric circles. For example, the first arc-adjusting member 410 is provided with the first guide arc groove 411, and the curvature of the first guide arc groove 411 is smaller than the curvature of the arc rack 440. Although due to the different curvatures, part of the first guide arc groove 411 is embedded with the second arc-adjusting member 420 and part is separated from the second arc-adjusting member 420, and the contact length and contact area are small, the second arc-adjusting member 420 is at least partially located in the first guide arc groove 411 and can still maintain relatively stable rotation under the limitation of the first guide arc groove 411 to prevent the second arc-adjusting member 420 from shaking or deviating.

[0068] In one embodiment, the combination Figure 3 and Figure 4 The arc adjustment mechanism 400 also includes a shielding plate 450, which covers at least part of the slot of the first guide arc groove 411 to form a relatively closed area to prevent the first arc adjustment member 410 or the second arc adjustment member 420 located in the first guide arc groove 411 from detaching.

[0069] Assuming that the first arc adjusting member 410 is provided with a first guide arc groove 411, and the second arc adjusting member 420 is at least partially located in the first guide arc groove 411, then the second arc adjusting member 420 is at the shielding piece 450, and is wrapped and limited by the inner wall of the first guide arc groove 411 and the shielding piece 450 on all sides, preventing the second arc adjusting member 420 from separating from the first guide arc groove 411, thereby further improving the rotational stability of the first arc adjusting member 410 and the second arc adjusting member 420.

[0070] In one embodiment, combined Figure 3 and Figure 4 The arc adjustment mechanism 400 also includes a ball 461, which is located between the first arc adjustment member 410 and the second arc adjustment member 420, reducing the friction resistance between the first arc adjustment member 410 and the second arc adjustment member 420, so that the ball 461 can stably abut the first arc adjustment member 410 and the second arc adjustment member 420 respectively.

[0071] Specifically, the ball 461 is limited in rolling contact within the first guide arc groove 411, ensuring reliable rolling contact of the ball 461. Therefore, the arc adjustment mechanism 400 can achieve relative rotation of the first arc adjustment member 410 and the second arc adjustment member 420 with less friction when adjusting the arc, thereby improving adjustment efficiency.

[0072] Specifically, one of the first arc adjusting member 410 and the second arc adjusting member 420 has a first guide arc groove 411, and the other is equipped with a rotatable ball 461 and is limited in the first guide arc groove 411, so that the ball 461 can reduce the friction between the first arc adjusting member 410 and the second arc adjusting member 420 on the one hand, and on the other hand, by being limited in the first guide arc groove 411, ensure that the rotation direction between the first arc adjusting member 410 and the second arc adjusting member 420 is stable and reliable.

[0073] Furthermore, one of the first arc-adjusting member 410 and the second arc-adjusting member 420 has a first guide arc groove 411, and the other has a ball-containing groove. The ball 461 can be rotatably limited in the ball-containing groove so that the position of the ball 461 in the containing groove is relatively stable, thereby ensuring the stable operation of the ball 461.

[0074] Optionally, a bead retaining plate 462 is installed at the notch of the bead trough to prevent the ball 461 from escaping from the bead trough and ensure the stable operation of the ball 461. One side wall of the bead trough has an opening, through which the ball 461 is exposed to the bead trough, so that the ball 461 can make rolling contact with the outside. In one embodiment, the bead retaining plate 462 is detachably installed at the notch of the bead trough to facilitate the assembly and maintenance of the ball 461. In one embodiment, one side wall of the bead trough is completely open to form an opening, thereby increasing the contact area between the ball 461 and the outside, or the inner diameter of the opening is smaller than the diameter of the ball 461, thereby preventing the ball 461 from escaping from the bead trough through the opening.

[0075] Optionally, there are two groups of balls 461 , and the two groups of balls 461 are in rolling contact with two opposite groove walls of the first guide arc groove 411 respectively, so as to further reduce friction.

[0076] In a specific embodiment, combining Figure 4The first arc-adjusting member 410 has a first guide arc groove 411, and the second arc-adjusting member 420 is equipped with a rotatable ball 461. The ball 461 slides with the second arc-adjusting member 420 and is located in the first guide arc groove 411, and rolls in contact with the groove wall of the first guide arc-adjusting groove to separate the first arc-adjusting member 410 and the second arc-adjusting member 420. There are two groups of rolling resistances, and the two groups of balls 461 roll against the two opposite groove walls of the first guide arc groove 411 respectively. The second arc-adjusting member 420 is provided with a ball-containing groove, and the balls 461 are accommodated in the ball-containing groove. Correspondingly, there are two groups of ball-containing grooves, and the two groups of balls 461 are respectively accommodated in the two groups of ball-containing grooves. The two groups of ball-containing grooves are located in the same radial direction, and a bead block 462 covers the two ball-containing grooves at the same time.

[0077] In some embodiments, combined Figure 3 and Figure 4 The gear assembly 430 includes a rotating shaft 432, a driving member 433, and an arc adjustment gear 431. The rotating shaft 432 is rotatably mounted on the first arc adjustment member 410. The driving member 433 and the arc adjustment gear 431 are spaced apart from each other on the rotating shaft 432. A worker rotates the driving member 433 to drive the rotating shaft 432 and the arc adjustment gear 431. The diameter of the driving member 433 is larger than that of the arc adjustment gear 431. This reduces the force required to rotate the driving member 433, making arc adjustment easier.

[0078] In one embodiment, the combination Figure 3 and Figure 4 Gear assembly 430 also includes a stopper 435 and an elastic member 436. Stopper 435 is removably mounted on rotating shaft 432. The removable design of stopper 435 simplifies installation and maintenance of gear assembly 430. Elastic member 436 is compressed, with one end of elastic member 436 mounted on rotating shaft 432. Both sides of driving member 433 abut against the other end of elastic member 436 and stopper 435, respectively, to ensure that driving member 433 remains stable on the axis of rotating shaft 432. By providing continuous tension, elastic member 436 ensures that gear assembly 430 remains stable under vibration or dynamic load conditions, absorbs and dissipates vibration energy, and reduces relative movement between components.

[0079] Specifically, combined Figure 3 and Figure 4 The gear assembly 430 further includes a limiting fastener 438 , which is detachably disposed between the limiting member 435 and the rotating shaft 432 , thereby enabling the limiting member 435 to be detachably mounted on the rotating shaft 432 .

[0080] In one embodiment, an anti-slip portion 437 is provided on the peripheral side of the driving member 433, which increases the friction between the driving member 433 and other contact surfaces (such as hands, tools or transmission parts), helps the staff to hold the driving member 433 more stably, reduces slipping, and ensures effective power transmission.

[0081] Specifically, the design of the anti-slip portion 437 increases the roughness or special texture of the peripheral side of the driving member 433 . For example, the anti-slip portion 437 is a tooth surface provided on the peripheral side of the driving member 433 .

[0082] In one embodiment, the first arc-adjusting member 410 has a mounting cavity 412 with an opening on one side. An arc-adjusting gear 431 is located within the mounting cavity 412 and meshes with an arc-shaped rack 440 through the opening. The mounting cavity 412 provides a closed or semi-closed environment for the arc-adjusting gear 431, ensuring a more stable and safe rotation of the arc-adjusting gear 431. Protecting the arc-adjusting gear 431 from external interference helps improve the accuracy and reliability of the gear transmission.

[0083] In one embodiment, the driving member 433 is located outside the mounting cavity 412 , so that an operator can more easily operate the driving member 433 .

[0084] In some embodiments, combined Figure 3 and Figure 4 The surface of the first arc-adjusting member 410 and one of the driving members 433 are provided with a plurality of first angle adjustment holes 413, which are distributed circumferentially. A first angle adjustment block 434 is provided on the surface of the first arc-adjusting member 410 and another of the driving members 433. The first angle adjustment block 434 can be rotated and inserted into any of the first angle adjustment holes 413, effectively preventing the driving member 433 from accidentally rotating under the influence of external forces or vibrations. Each first angle adjustment hole 413 represents a specific angular position, and the step-by-step adjustment design greatly simplifies the installation and commissioning process.

[0085] In some embodiments, combined Figure 2 and Figure 4 The arc adjusting mechanism 400 also includes a first support frame 470. The width of the first support frame 470 is larger than the width of the first arc adjusting component 410. The first arc adjusting component 410 is installed in the middle of the first support frame 470 in the width direction Y. The first support frame 470 can provide a larger contact area and stronger supporting force than the first arc adjusting component 410. The first arc adjusting component 410 is installed through the first support frame 470, thereby enhancing the installation strength of the first arc adjusting component 410, and can more effectively disperse and withstand the pressure from the arc adjusting mechanism 400 and external loads.

[0086] In one embodiment, both ends of the first arc-adjusting member 410 are respectively installed on the first support frame 470, and the two can form a more stable structure, which helps prevent the first arc-adjusting member 410 from twisting or tilting when subjected to force, and helps the first arc-adjusting member 410 to disperse the pressure from the arc-adjusting mechanism 400 and the external load to the first support frame 470.

[0087] In one embodiment, the middle portion of the first arc adjusting member 410 is connected to the first support frame 470. Since the first arc adjusting member 410 is rod-shaped, the middle portion of the first arc adjusting member 410 is supported by the first support frame 470 to prevent it from bending and deforming.

[0088] In one embodiment, one of the first arc adjusting member 410 and the first support frame 470 has a second limiting groove 421, and the other of the first arc adjusting member 410 and the first support frame 470 is embedded in the second limiting groove 421 to achieve a positioning connection between the first arc adjusting member 410 and the first support frame 470.

[0089] In some embodiments, combined Figure 2 and Figure 4 The arc adjusting mechanism 400 also includes a second support frame 480. The width of the second support frame 480 is larger than the width of the second arc adjusting component 420. The second arc adjusting component 420 is installed in the middle of the second support frame 480 in the width direction Y. The second support frame 480 can provide a larger contact area and stronger supporting force than the second arc adjusting component 420. The second arc adjusting component 420 is installed through the second support frame 480, thereby enhancing the installation strength of the second arc adjusting component 420, and can more effectively disperse and withstand the pressure from the arc adjusting mechanism 400 and external loads.

[0090] In one embodiment, both ends of the second arc-adjusting member 420 are respectively installed on the second support frame 480, and the two can form a more stable structure, which helps prevent the second arc-adjusting member 420 from twisting or tilting when subjected to force, and helps the second arc-adjusting member 420 to disperse the pressure from the arc-adjusting mechanism 400 and the external load to the second support frame 480.

[0091] In one embodiment, the middle portion of the second arc adjusting member 420 is connected to the second support frame 480. Since the second arc adjusting member 420 is rod-shaped, the middle portion of the second arc adjusting member 420 is supported by the second support frame 480 to prevent it from bending and deforming.

[0092] In some embodiments, combined Figure 2 and Figure 4One of the first support frame 470 and the second support frame 480 is provided with a second guide arc groove 471. The second guide arc groove 471 and the arc rack 440 are arranged concentrically. The other of the first support frame 470 and the second support frame 480 is provided with a sliding block 481. The sliding block 481 is slidably disposed in the second guide arc groove 471. The second guide arc groove 471 guides the first support frame 470 and the second support frame 480 to stably rotate relative to each other along a defined direction, thereby preventing deviation during the adjustment process and improving the stability and accuracy of the entire arc adjustment mechanism 400.

[0093] Optionally, the second guide arc groove 471 and the arc rack 440 have the same corresponding radius, reducing the number of structures with different diameter lengths, simplifying the overall structure of the arc adjustment mechanism 400, reducing the space occupied by structures with different diameter lengths, and facilitating the miniaturization and lightweight design of the arc adjustment mechanism 400.

[0094] In some embodiments, combined Figure 2 and Figure 4 One of the first and second support frames 470 and 480 is provided with a plurality of second angle adjustment holes 482, distributed along a first arc. The first arc and the arc-shaped rack 440 are arranged concentrically. The other of the first and second support frames 470 and 480 is provided with a second angle adjustment block 482, which can be rotated and inserted into any of the second angle adjustment holes 482, effectively preventing the driver 433 from accidentally rotating due to external forces or vibrations. Each second angle adjustment hole 482 represents a specific angular position, and the step-by-step adjustment design greatly simplifies installation and commissioning.

[0095] Example 2

[0096] Combine Figure 2 and Figure 5 , this embodiment provides an LED display screen. The LED display screen has a length direction X and a width direction Y, and the LED display screen includes a flexible display module 100, an intermediate frame 200, two side frames 300 and any one of the arc adjustment mechanisms 400 in Example 1. Multiple flexible display modules 100 are spliced ​​along the length direction X and / or the width direction Y. The intermediate frame 200 is installed on the back of the flexible display module 100. The two side frames 300 are installed on the back of the flexible display module 100, and the two side frames 300 are located at intervals on both sides of the intermediate frame 200 in the length direction X. One of the first arc adjustment member 410 and the second arc adjustment member 420 is installed on the intermediate frame 200, and the other is installed on the side frame 300.

[0097] The staff only needs to rotate the arc adjustment gear 431, and the meshing arc adjustment gear 431 and the arc rack 440 will rotate relative to each other, driving the relative angle of the first arc adjustment component 410 and the second arc adjustment component 420 to be adjusted, and then driving the relative angle of the middle frame 200 and the side frame 300 to be adjusted, and the flexible display module 100 installed on the middle frame 200 and the side frame 300 will bend accordingly, realizing the curvature adjustment efficiently.

[0098] Combine Figure 6 The rotation angles of the two arc adjustment mechanisms 400 are both 0, the two side frames 300 and the middle frame 200 are located in the same plane, so that the flexible display module 100 installed on the middle frame 200 and the side frame 300 are located in the same plane, and the LED display screen is planar.

[0099] Combine Figure 7 The rotation angles of the two arc adjustment mechanisms 400 are both positive numbers, and the two side frames 300 rotate backward relative to the middle frame 200, so that the side frames 300 drive the flexible display modules 100 at the edges to rotate backward relative to the middle flexible display module 100, and the LED display screen becomes convex.

[0100] Combine Figure 8 The rotation angles of the two arc adjustment mechanisms 400 are both negative, and the two side frames 300 rotate forward relative to the middle frame 200, so that the side frames 300 drive the flexible display modules 100 at the edges to rotate forward relative to the middle flexible display module 100, and the LED display screen becomes concave.

[0101] Combine Figure 9 , the rotation angle of one arc adjustment mechanism 400 is a positive number, and the corresponding side frame 300 rotates backward relative to the middle frame 200, so that the side frame 300 drives the connected flexible display module 100 to rotate backward relative to the middle flexible display module 100; the rotation angle of the other arc adjustment mechanism 400 is a negative number, and the corresponding side frame 300 rotates forward relative to the middle frame 200, so that the side frame 300 drives the connected flexible display module 100 to rotate forward relative to the middle flexible display module 100, and the LED display screen is S-shaped.

[0102] In some embodiments, combined Figure 5 and Figure 10The middle frame 200 includes a first column 210 and two second columns 220. The first column 210 is mounted on the back of the flexible display module 100, and the two second columns 220 are spaced apart on either side of the first column 210 in the length direction X. The first column 210 and the second columns 220 are connected by a crossbeam 230. The second columns 220 and / or the crossbeam 230 are used to mount the LED display. The first column 210 and the two second columns 220 are connected by the crossbeam 230 to form a stable frame structure, improving the frame's load-bearing capacity and enhancing support for the flexible display module 100, facilitating the assembly of large-scale LED displays.

[0103] Specifically, one of the first arc adjusting member 410 and the second arc adjusting member 420 is installed on the first column 210 , and the other is installed on the side frame 300 .

[0104] In one embodiment, the combination Figure 5 and Figure 10 A connecting block 240 is provided at one end of the second column 220, and a connecting hole 221 is provided at the other end of the second column 220. The connecting hole 221 is used for inserting the connecting block 240, which facilitates the rapid assembly and disassembly between two adjacent second columns 220, realizes a tight connection, and is conducive to splicing two LED display screens.

[0105] Specifically, combined Figure 5 and Figure 10 The middle frame 200 also includes a first locking rod 250, which is movably mounted on the second column 220 and / or the beam 230. The connecting block 240 has a first locking hole 241. The first locking rod 250 can be movably extended into the connecting hole 221 and inserted into the first locking hole 241 to fix the connecting block 240 inserted into the connecting hole 221, thereby achieving a tight connection between two adjacent second columns 220 and convenient disassembly and assembly.

[0106] In one embodiment, the combination Figure 5 and Figure 10 A positioning block 260 is provided at one end of the first column 210, and a positioning hole 211 is provided at the other end of the first column 210. The positioning hole 211 is used for inserting the positioning block 260, which facilitates the rapid assembly and disassembly between two adjacent first columns 210, realizes a tight connection, is conducive to splicing two LED display screens, and simplifies the splicing operation.

[0107] In one embodiment, the first column 210 is connected to at least two flexible display modules 100. The long length of the first column 210 facilitates the realization of a large-scale LED display screen. By connecting the first column 210 to multiple flexible display modules 100, a more stable support structure is formed, which helps maximize space utilization.

[0108] In one embodiment, the second column 220 is connected to at least two flexible display modules 100. The longer length of the second column 220 facilitates the realization of a large-scale LED display screen. By connecting the second column 220 to multiple flexible display modules 100, a more stable support structure is formed, which helps maximize space utilization.

[0109] In one embodiment, the side frame 300 is connected to at least two flexible display modules 100. The longer side frame 300 facilitates the implementation of large-scale LED displays. By connecting the side frame 300 to multiple flexible display modules 100, a more stable support structure is formed, maximizing space utilization.

[0110] In one embodiment, the length of the middle frame 200 is greater than that of the flexible display module 100 . The middle frame 200 can simultaneously support two flexible display modules 100 in its length direction X, which is beneficial for expanding the size of the LED display screen.

[0111] In one embodiment, the LED display further includes a power distribution box 500, which is mounted on the first column 210 and provides a convenient electrical connection to the flexible display module 100, allowing for more organized cable routing and management. As the primary support structure for the intermediate frame 200, the first column 210 offers high stability and load-bearing capacity, ensuring safe operation of the power distribution box 500 and minimizing potential safety hazards caused by external factors.

[0112] In a specific embodiment, combining Figure 5 and Figure 11 In the LED display, there are four flexible display modules 100, which are spliced ​​in a 2*2 pattern along the length direction X and the width direction Y. The first column 210 is located at the back of the four flexible display modules 100 and is connected to all four flexible display modules 100. The two second columns 220 are located on either side of the first column 210 and are connected to the two flexible display modules 100 in the width direction Y. The two side frames 300 are located on either side of the middle frame 200 and are connected to the two flexible display modules 100 in the width direction Y.

[0113] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An arc adjustment mechanism (400), characterized in that: The arc adjustment mechanism (400) includes a first arc adjustment member (410), a second arc adjustment member (420) and a gear assembly (430). The gear assembly (430) is mounted on the first arc adjustment member (410). The gear assembly (430) has a rotatable arc adjustment gear (431). The second arc adjustment member (420) is provided with an arc-shaped rack (440). The arc-shaped rack (440) is engaged with the arc adjustment gear (431) so that the first arc adjustment member (410) and the second arc adjustment member (420) rotate relative to each other.

2. The arc regulating mechanism (400) according to claim 1, characterized in that: One of the first arc-adjusting member (410) and the second arc-adjusting member (420) is provided with a first guide arc groove (411), and the other of the first arc-adjusting member (410) and the second arc-adjusting member (420) is at least partially slidably arranged in the first guide arc groove (411), and the first guide arc groove (411) and the arc-shaped rack (440) are arranged in concentric circles.

3. The arc regulating mechanism (400) according to claim 2, characterized in that: The arc-adjusting mechanism (400) further comprises a shielding piece (450), wherein the shielding piece (450) covers at least a portion of the slot opening of the first guide arc-shaped slot (411); And / or, the arc adjustment mechanism (400) further includes a ball (461), the ball (461) is located between the first arc adjustment member (410) and the second arc adjustment member (420), and the ball (461) rolls within the first guide arc groove (411).

4. The arc regulating mechanism (400) according to claim 1, characterized in that: The gear assembly (430) includes a rotating shaft (432), a driving member (433) and the arc adjustment gear (431), wherein the rotating shaft (432) is rotatably mounted on the first arc adjustment member (410), and the driving member (433) and the arc adjustment gear (431) are installed on the rotating shaft (432) at intervals, and the diameter of the driving member (433) is larger than the diameter of the arc adjustment gear (431).

5. The arc regulating mechanism (400) according to claim 4, characterized in that: The gear assembly (430) further includes a limiting member (435) and an elastic member (436), wherein the limiting member (435) is detachably mounted on the rotating shaft (432), and the elastic member (436) is compressed, with one end of the elastic member (436) being disposed on the rotating shaft (432), and both sides of the driving member (433) respectively abutting against the other end of the elastic member (436) and the limiting member (435); And / or, an anti-slip portion (437) is provided on the peripheral side of the driving member (433).

6. The arc regulating mechanism (400) according to claim 4, characterized in that: The first arc-adjusting member (410) has a mounting cavity (412), one side of the mounting cavity (412) has an opening, the arc-adjusting gear (431) is located in the mounting cavity (412), and the arc-adjusting gear (431) is engaged with the arc-shaped rack (440) through the opening; the driving member (433) is located outside the mounting cavity (412); And / or, a plurality of first angle adjustment holes (413) are provided on the surface of the first arc adjustment member (410) and one of the driving members (433), and the plurality of first angle adjustment holes (413) are distributed in a circular pattern, and a first angle adjustment block (434) is provided on the surface of the first arc adjustment member (410) and the other of the driving members (433), and the first angle adjustment block (434) can be embedded in any one of the first angle adjustment holes (413) by rotation.

7. The arc regulating mechanism (400) according to any one of claims 1 to 6, characterized in that: The arc adjustment mechanism (400) further comprises a first support frame (470), the width of the first support frame (470) being greater than the width of the first arc adjustment member (410), the first arc adjustment member (410) being mounted on a middle portion of the first support frame (470) in the width direction (Y), and the first arc adjustment member (410) being mounted via the first support frame (470); The arc adjustment mechanism (400) further includes a second support frame (480), the width dimension of the second support frame (480) is greater than the width dimension of the second arc adjustment member (420), the second arc adjustment member (420) is installed on the middle part of the second support frame (480) in the width direction (Y), and the second arc adjustment member (420) is installed through the second support frame (480).

8. The arc regulating mechanism (400) according to claim 7, characterized in that: Both ends of the first arc-adjusting member (410) are respectively mounted on the first support frame (470); the middle portion of the first arc-adjusting member (410) is connected to the first support frame (470); Both ends of the second arc-adjusting member (420) are respectively mounted on the second support frame (480); the middle portion of the second arc-adjusting member (420) is connected to the second support frame (480); One of the first support frame (470) and the second support frame (480) is provided with a second guide arc groove (471), and the second guide arc groove (471) and the arc rack (440) are arranged in a concentric circle. The other of the first support frame (470) and the second support frame (480) is provided with a sliding block (481), and the sliding block (481) is slidably arranged in the second guide arc groove (471); One of the first support frame (470) and the second support frame (480) is provided with a plurality of second angle adjustment holes (472), and the plurality of second angle adjustment holes (472) are distributed along a first arc line, and the first arc line and the arc-shaped rack (440) are arranged as concentric circles, and the other of the first support frame (470) and the second support frame (480) is provided with a second angle adjustment block (482), and the second angle adjustment block (482) can be embedded in any of the second angle adjustment holes (472) by rotation.

9. An LED display screen, characterized in that: The LED display screen has a length direction (X) and a width direction (Y), and the LED display screen includes: A plurality of flexible display modules (100) are spliced ​​together along the length direction (X) and / or the width direction (Y); A middle frame (200) is mounted on the back of the flexible display module (100); Two side frames (300) are installed on the back of the flexible display module (100), and the two side frames (300) are located at intervals on both sides of the middle frame (200) in the longitudinal direction (X); The arc-adjusting mechanism (400) according to any one of claims 1 to 8, wherein one of the first arc-adjusting member (410) and the second arc-adjusting member (420) is mounted on the middle frame (200), and the other is mounted on the side frame (300).

10. The LED display screen according to claim 9, characterized in that: The intermediate frame (200) comprises a first column (210) and two second columns (220), wherein the first column (210) is mounted on the back of the flexible display module (100), and the two second columns (220) are spaced apart and located on both sides of the first column (210) in the length direction (X), and the first column (210) and the second column (220) are connected by a crossbeam (230), and the second column (220) and / or the crossbeam (230) are used for mounting the LED display screen; One end of the second column (220) is provided with a connecting block (240), and the other end of the second column (220) is provided with a connecting hole (221), and the connecting hole (221) is used for inserting the connecting block (240); the intermediate frame (200) also includes a first locking rod (250), and the first locking rod (250) is movably mounted on the second column (220) and / or the crossbeam (230), and the connecting block (240) has a first locking hole (241), and the first locking rod (250) can be movably extended into the connecting hole (221) and inserted into the first locking hole (241); A positioning block (260) is provided at one end of the first column (210), and a positioning hole (211) is provided at the other end of the first column (210), wherein the positioning hole (211) is used for inserting the positioning block (260); The first column (210) is connected to at least two of the flexible display modules (100); the second column (220) is connected to at least two of the flexible display modules (100); and the side frame (300) is connected to at least two of the flexible display modules (100); The length dimension of the middle frame (200) is greater than the length dimension of the flexible display module (100); The LED display screen further comprises a power distribution box (500), and the power distribution box (500) is installed on the first column (210).

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