An arc adjusting mechanism of a display module, a display module and an arc adjusting method

Abstract

The present application belongs to the technical field of LED display screen, and specifically relates to an arc adjusting mechanism of a display module, the display module and an arc adjusting method. The mechanism comprises a first shell and a second shell, a first mounting seat and a second mounting seat which can move horizontally in the first shell and the second shell, and a driving assembly. The driving assembly comprises a connecting shaft, a transmission unit and an outer tube which is sleeved outside the connecting shaft. The outer wall of the connecting shaft is provided with an outer convex structure, the inner wall of the outer tube is provided with an inner convex structure, and one end of the outer tube is abutted against the first shell through an elastic member. In the first adjusting mode, the outer convex structure is located in the circumferential gap, and the translational outer tube can realize coarse adjustment of the arc. In the second adjusting mode, the outer tube is pulled to overcome the elastic force of the elastic member, so that the outer convex structure is circumferentially blocked with the inner convex structure. At this time, rotating the outer tube can drive the connecting shaft to rotate synchronously, thereby realizing fine adjustment of the arc. The present application realizes two kinds of adjusting modes, namely coarse and fine adjustment modes, through the same operating member, and takes into account the adjusting efficiency and accuracy.

Description

Technical Field

[0001] This invention belongs to the field of LED display technology, specifically a curvature adjustment mechanism for a display module, a display module, and a curvature adjustment method. Background Technology

[0002] With the development of display technology, curved or irregularly shaped displays composed of multiple display modules have been widely used. To ensure the display effect after splicing, the curvature of the display modules needs to be precisely adjusted.

[0003] Existing display modules typically change their curvature by adjusting the chord length of their frame. However, during actual installation and debugging, operators need both the ability to quickly make large, coarse adjustments to reach the target curvature and the ability to make fine adjustments as they approach the target to ensure splicing accuracy. Existing curvature adjustment mechanisms are often single-function, either having a large adjustment range but low precision, or high precision but a cumbersome and inefficient adjustment process, making it difficult to balance the efficiency of coarse adjustments with the precision of fine adjustments. Furthermore, how to reliably lock the curvature after adjustment to prevent positional changes due to vibration or external forces is also a problem that urgently needs to be solved.

[0004] Therefore, the existing technology has technical defects such as inconvenient operation of the display module curvature adjustment mechanism, difficulty in balancing adjustment efficiency and adjustment accuracy, and insufficient locking reliability. Summary of the Invention

[0005] The main objective of this invention is to provide a curvature adjustment mechanism for a display module, a display module, and a curvature adjustment method, aiming to solve the problems of inconvenient operation and difficulty in balancing coarse adjustment efficiency and fine adjustment accuracy in the existing curvature adjustment mechanism for display modules.

[0006] To achieve the above objectives, the present invention provides an arc adjustment mechanism for a display module, comprising: A first housing and a second housing are spaced apart, and mounting holes are respectively provided on the first housing and the second housing. A first mounting base and a second mounting base are spaced apart. The first mounting base is horizontally movable and inserted into the first housing, and the second mounting base is horizontally movable and inserted into the second housing. The drive assembly includes a connecting shaft, transmission units disposed at both ends of the connecting shaft, and an outer tube sleeved on the outside of the connecting shaft. The transmission units at both ends are respectively connected to a first mounting base and a second mounting base, and the rotation of the connecting shaft drives the first mounting base and the second mounting base to move horizontally through the transmission units. One end of the outer tube abuts against the second housing, and the other end of the outer tube abuts against the first housing through an elastic element. The elastic element has an elastic force that causes the outer tube to move toward the second housing. At least one outwardly protruding structure is provided on the outer wall of the connecting shaft, and at least one inwardly protruding structure is provided on the inner wall of the outer tube. A circumferential gap is provided on the side of the inwardly protruding structure near the first housing. The outer tube is suitable for operation in the first adjustment mode and the second adjustment mode. In the first adjustment mode, the convex structure is located in the circumferential gap, and the connecting shaft can rotate relative to the outer tube. The translation of the outer tube realizes the coarse adjustment of the curvature. In the second adjustment mode, after the outer tube is pulled towards the first housing, the convex structure and the inner convex structure form a blocking fit in the circumferential direction. Rotating the outer tube can drive the connecting shaft to rotate synchronously, thus realizing the fine adjustment of the curvature.

[0007] Furthermore, the transmission unit includes a first gear and a second gear fixedly sleeved at both ends of the connecting shaft, and a first rack and a second rack respectively disposed on the first mounting base and the second mounting base; the connecting shaft passes through the mounting holes of the first housing and the second housing and can rotate around its own axis; the first rack meshes with the first gear, and the second rack meshes with the second gear.

[0008] Furthermore, a circumferential abutment is provided on the inner wall of the outer tube near the first housing; one end of the elastic element abuts against the first housing, and the other end abuts against the abutment; the circumferential gap is located between the abutment and the inner convex structure.

[0009] Furthermore, a first locking assembly is provided on the first housing, the first locking assembly including a threaded structural member, a first limiting member, and a locking handle; the first limiting member is disposed in the mounting hole of the first housing and is located on the side of the first rack away from the second housing along the axial direction of the connecting shaft; the threaded structural member passes through the first limiting member and is fixedly connected to one end of the connecting shaft, and the locking handle is threadedly connected to the threaded structural member; the mutual contact surfaces of the first limiting member and the first mounting base are provided with mutually cooperating limiting portions.

[0010] Furthermore, the mutually cooperating limiting parts include a first limiting part and a second limiting part. The first limiting part is disposed on the lower surface of the first limiting member, and the second limiting part is disposed on the side of the first rack. One of the first limiting part and the second limiting part is a protrusion, and the other is a groove.

[0011] Furthermore, the threaded structural component and the connecting shaft are circumferentially fixedly connected by a mutually cooperating polygonal connecting part and a polygonal connecting groove. The polygonal connecting part is located at the end of the threaded structural component facing the connecting shaft, and the polygonal connecting groove is located at the end of the connecting shaft facing the threaded structural component.

[0012] Furthermore, a preload spring is fitted onto the threaded structural component, with one end of the preload spring abutting against the locking handle and the other end abutting against the first limiting component.

[0013] Furthermore, the connecting shaft includes an inner shaft and an outer shaft fitted on the inner shaft. The inner shaft and the outer shaft are fixedly connected by fasteners. Both ends of the outer shaft are polygonal structures. The shaft holes of the first gear and the second gear are polygonal holes adapted to the polygonal structures. The fasteners protrude from the outer shaft to form an outward convex structure.

[0014] Furthermore, both the first and second mounting bases have corresponding scales on their sides.

[0015] Furthermore, a second locking assembly is provided on the second housing. The second locking assembly includes a second limiting member, which is fixedly connected to one end of the connecting shaft that passes through the mounting hole. The mutual contact surfaces of the second limiting member and the second mounting base are provided with mutually cooperating limiting portions, which are limiting structures consisting of grooves and protrusions.

[0016] The present invention also provides a display module, including a cabinet frame and an arc adjustment mechanism for the display module as described above. The cabinet frame includes a first side frame, a second side frame, a third side frame and a fourth side frame. The first side frame and the second side frame are arranged opposite to each other, the third side frame and the fourth side frame are arranged opposite to each other, and the first side frame, the second side frame, the third side frame and the fourth side frame are connected end to end in sequence to form a rectangular frame. The first frame and the second frame each include a plurality of interconnected arc adjustment components. One end of the arc adjustment component is provided with an arc-shaped insertion part, and the other end is provided with an arc-shaped groove. Two adjacent arc adjustment components are engaged with each other through the arc-shaped insertion part and the arc-shaped groove. The ends of the first and second housings away from the connecting shaft are hinged to the first connecting rod. The first connecting rod is detachably and fixedly connected to the third frame. The ends of the first and second mounting seats away from the connecting shaft are hinged to the second connecting rod. The second connecting rod is detachably and fixedly connected to the fourth frame.

[0017] The present invention also provides a method for adjusting the curvature of a display module, comprising the following steps: S1: In the first adjustment mode, the outer tube is in the initial state, and the convex structure of the connecting shaft is located in the circumferential gap. Pulling the outer tube to the left or right will cause the outer tube to move and drive the connecting shaft to rotate, thereby achieving coarse adjustment of the curvature. S2: In the second adjustment mode, the outer tube is pulled towards the first housing. The outer tube overcomes the elastic force of the elastic element and moves towards the first housing until the outer convex structure of the connecting shaft and the inner convex structure of the outer tube form a blocking fit in the circumferential direction. Rotating the outer tube causes the outer tube to drive the connecting shaft to rotate synchronously, thereby achieving fine adjustment of the curvature. S3: Locks the curvature of the display module to the adjusted position.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) This invention cleverly utilizes the same outer tube to achieve two adjustment modes by setting a switchable mating structure between the outer tube and the connecting shaft. In the first adjustment mode, a wide range of coarse arc adjustment can be achieved by translating the outer tube, which is quick and efficient. In the second adjustment mode, by lifting and rotating the outer tube, the connecting shaft can be rotated at a small angle to achieve high-precision fine arc adjustment. This design takes into account both adjustment efficiency and adjustment accuracy, solving the problem of the difficulty in balancing the two in the prior art.

[0019] (2) By setting a first locking component and a second locking component, the present invention can reliably fix the positions of the first mounting base and the second mounting base by means of the locking handle after the curvature adjustment is completed, preventing the curvature from changing unexpectedly due to external force or vibration, and improving the stability of the display module after splicing.

[0020] (3) By setting a scale on the mounting base, the present invention provides an intuitive visual reference for the adjustment process, which makes it easier for operators to quantify the adjustment amount and achieve precise reset or symmetrical adjustment, thereby further improving the convenience and accuracy of adjustment. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is an overall structural diagram of the arc adjustment mechanism provided in an embodiment of this application; Figure 2 Exploded view (I) of the arc adjustment mechanism provided in an embodiment of this application; Figure 3 Exploded view (II) of the arc adjustment mechanism provided in an embodiment of this application; Figure 4 This is a structural diagram of the drive assembly of an arc adjustment mechanism provided in an embodiment of this application; Figure 5 A structural diagram of the split-type connecting shaft of the arc adjustment mechanism provided in an embodiment of this application; Figure 6 This is a structural diagram of the outer tube of an arc adjustment mechanism provided in an embodiment of this application; Figure 7A structural diagram of the first limiting member provided in an embodiment of this application; Figure 8 This is an overall structural diagram of a display module provided in an embodiment of this application; Figure 9 for Figure 8 Enlarged view of part A in the image; Figure 10 This is a structural diagram of an arc-shaped connector provided in an embodiment of this application; Wherein: 100-arc adjustment mechanism, 1-first housing, 2-second housing, 21-mounting hole, 3-first mounting base, 31-first rack, 32-second limiting part, 4-second mounting base, 41-second rack, 5-drive assembly, 51-connecting shaft, 511-outer convex structure, 512-inner shaft, 513-outer shaft, 52-transmission unit, 521-first gear, 522-second gear, 53-outer tube, 531-inner convex structure, 532-circumferential clearance, 533-abutment 54-Elastic element, 6-First locking assembly, 61-Threaded structural element, 62-First limiting element, 621-First limiting part, 63-Locking handle, 64-Preload spring, 7-Scale, 8-Second locking assembly, 81-Second limiting element, 9-Box frame, 91-First side frame, 911-Arc-shaped connector, 912-Arc-shaped insertion part, 913-Arc-shaped groove, 92-Second side frame, 93-Third side frame, 94-Fourth side frame, 95-First connecting element, 96-Second connecting element. Detailed Implementation

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0024] The following is in conjunction with the appendix Figure 1 To be continued Figure 10 The invention is described in detail with specific embodiments.

[0025] See Figures 1 to 10 This application provides a curvature adjustment mechanism for a display module, aiming to solve the technical problems in the prior art where the curvature adjustment of display modules is complex, lacks precision, and cannot balance adjustment efficiency and accuracy. This application achieves rapid and precise adjustment of the curvature of the display module by setting a drive component with both coarse and fine adjustment modes.

[0026] See Figures 1 to 3The curvature adjustment mechanism 100 of this application includes a first housing 1 and a second housing 2 spaced apart, and a first mounting seat 3 and a second mounting seat 4 that move within the first housing 1 and the second housing 2 respectively. The movement distance of the first mounting seat 3 and the second mounting seat 4 is controlled by a drive assembly 5, thereby changing the chord length between the corresponding housing and the mounting seat. Since the ends of the first housing 1 and the second housing 2 away from the connecting shaft 51 are hinged to the first connecting rod 95, and the ends of the first mounting seat 3 and the second mounting seat 4 away from the connecting shaft 51 are hinged to the second connecting rod 96, and the first connecting rod 95 and the second connecting rod 96 are fixedly connected to the cabinet frame 9 of the display module, the curvature of the display screen can be adjusted. The drive assembly 5 of this application includes a connecting shaft 51 disposed between the first housing 1 and the second housing 2. Both ends of the connecting shaft 51 are connected to the first mounting seat 3 and the second mounting seat 4 respectively via a transmission unit 52. The purpose of the above design is that when the connecting shaft 51 rotates, the rotational motion can be converted into linear motion of the two mounting seats through the transmission unit 52. To achieve different adjustment modes, the drive assembly 5 also includes an outer tube 53 sleeved on the outside of the connecting shaft 51. The outer tube 53 and the connecting shaft 51 have a switchable mating structure. Specifically, the outer wall of the connecting shaft 51 has at least one outwardly protruding structure 511, while the inner wall of the outer tube 53 has at least one correspondingly inwardly protruding structure 531. The side of the inwardly protruding structure 531 closest to the first housing 1 has a circumferential gap 532. This configuration of the inwardly and outwardly protruding structures 511 provides the mechanical basis for mode switching. By controlling the relative position and mating state of the outwardly and inwardly protruding structures 511 and 531, it is possible to switch between a coarse adjustment mode that allows the connecting shaft 51 to rotate freely relative to the outer tube 53 and a fine adjustment mode that drives the connecting shaft 51 to rotate synchronously, thereby resolving the contradiction between speed and precision that cannot be simultaneously achieved with a single adjustment method.

[0027] Specifically, in the first adjustment mode (i.e., coarse adjustment mode), the convex structure 511 is located within a preset circumferential gap 532. At this time, the convex structure 511 and the inner convex structure 531 do not interfere with each other, and the connecting shaft 51 can rotate freely relative to the outer tube 53. According to the adjustment method provided in this application embodiment, the operator can rotate the connecting shaft 51 by translating the outer tube 53, thereby quickly moving the first mounting base 3 and the second mounting base 4, achieving a wide-range, rapid, and coarse adjustment of the display module's curvature. This design aims to shorten the adjustment time during initial installation or significant changes in curvature, improving installation and debugging efficiency.

[0028] In the second adjustment mode (i.e., fine-tuning mode), the operator needs to first pull the outer tube 53 axially toward the first housing 1. One end of the outer tube 53 abuts against the first housing 1 via an elastic element 54, so this pulling action needs to overcome the elastic force of the elastic element 54. After the outer tube 53 moves to the predetermined position, the outwardly protruding structure 511, which was originally located within the circumferential gap 532, forms a blocking engagement with the inwardly protruding structure 531 of the outer tube 53 in the circumferential direction. At this time, the connecting shaft 51 and the outer tube 53 are locked in the circumferential direction and cannot rotate relative to each other. When the operator rotates the outer tube 53, the outer tube 53 can drive the connecting shaft 51 to rotate synchronously through the interfering inwardly and outwardly protruding structures 531 and 511. Since the outer tube 53 usually has a large diameter, it is convenient for the operator to perform fine rotation control, thereby achieving high-precision fine-tuning of the curvature. In this way, the problem of difficult precise positioning in the coarse-tuning mode is solved, and precise control of the curvature is achieved. After the fine-tuning is completed, the outer tube 53 is released. Under the action of the elastic element 54, the outer tube 53 is reset downward, so that the outer convex structure 511 of the connecting shaft 51 is reset to the position of the circumferential gap 532. At this time, when only the outer tube 53 is rotated, the outer tube 53 will spin freely.

[0029] In a preferred embodiment, the transmission unit 52 is a gear and rack transmission mechanism, which includes a first gear 521 and a second gear 522 fixedly sleeved at both ends of the connecting shaft 51, and a first rack 31 and a second rack 41 respectively disposed on the first mounting base 3 and the second mounting base 4; the connecting shaft 51 passes through the mounting holes 21 of the first housing 1 and the second housing 2, and can rotate around its own axis; the first rack 31 meshes with the first gear 521, and the second rack 41 meshes with the second gear 522. This structural design is simple and reliable, and makes full use of the accuracy and reliability of gear and rack transmission.

[0030] See Figure 6 In one optional embodiment, the protruding structure 511 of the outer tube 53 consists of multiple protrusions arranged circumferentially on the inner wall of the outer tube 53. The protrusions extend along the length of the outer tube 53, and a circumferential gap is formed between the outer wall of the connecting shaft 51 and the smooth inner wall of the outer tube 53. When the outer tube 53 is lifted, the protruding structure 511 on the connecting shaft 51 and these protrusions form a blocking engagement in the circumferential direction, enabling synchronous rotation. Simultaneously, since the circumferential gap 532 is formed between the outer wall of the connecting shaft 51 and the smooth inner wall of the outer tube 53 (outside the area where the protrusions are located), in the initial state of the elastic member 54, the protruding structure 511 of the connecting shaft 51 is completely located within the corresponding circumferential gap 532 on the smooth inner wall, without contacting any protrusions. Therefore, the connecting shaft 51 can rotate freely relative to the outer tube 53, with minimal frictional resistance, facilitating coarse adjustment or no-load adjustment.

[0031] In a preferred embodiment, please refer to Figure 6A circumferential abutment 533 is provided on the inner wall of the outer tube 53 near one end of the first housing 1. One end of the elastic member 54 abuts against the first housing 1, and the other end abuts against the abutment 533. Simultaneously, a circumferential gap 532 is located between the abutment 533 and the inner protrusion 531. The abutment 533 provides a stable and reliable axial support surface for the elastic member 54. This structure ensures that the elastic member 54 can continuously apply an elastic force that moves the outer tube 53 toward the second housing 2, thereby reliably maintaining the mechanism in the first adjustment mode (coarse adjustment mode) in the default state, avoiding the problem of accidental mode switching due to vibration or misoperation, and enhancing the stability of the mechanism's operation. Optionally, the abutment 533 is a boss provided on the inner wall of the outer tube 53 and evenly distributed circumferentially. The side of the boss facing the elastic member 54 is flat, facilitating support for the elastic member 54. The elastic member 54 is preferably a spring.

[0032] Furthermore, to reliably lock the curvature of the display module after adjustment, please refer to [link / reference needed]. Figure 2 and Figure 3 In this embodiment, a first locking assembly 6 is provided on the first housing 1. The first locking assembly 6 includes a threaded structural member 61, a first limiting member 62, and a locking handle 63. The first limiting member 62 is disposed within the mounting hole 21 of the first housing 1 and is located axially along the connecting shaft 51 on the side of the first rack 31 away from the second housing 2. The threaded structural member 61 passes through the first limiting member 62 and is fixedly connected to one end of the connecting shaft 51, while the locking handle 63 is threadedly connected to the end of the threaded structural member 61 extending out of the first housing 1. By rotating the locking handle 63, a large axial clamping force can be applied using the self-locking property of the thread, pressing the first limiting member 62 against the first mounting base 3, thereby locking it using friction or mechanical limiting. This design solves the risk of positional changes due to external forces or vibrations after curvature adjustment, achieving reliable fixation of the adjusted state.

[0033] In a preferred embodiment, to enhance the reliability of the lock, please refer to... Figure 2 and Figure 7The first limiting member 62 and the first mounting base 3 have mutually cooperating limiting portions on their contact surfaces. Specifically, the limiting portion includes a first limiting portion 621 located on the lower surface of the first limiting member 62 and a second limiting portion 32 located beside the first rack 31. One of the first limiting portion 621 and the second limiting portion 32 is a protrusion, and the other is a groove. When locked, the protrusion and the groove engage with each other. This design uses mechanical engagement instead of pure friction locking, and its technical effect is to provide positive, non-slip locking. Even under large impacts or vibrations, it can prevent any slight displacement of the mounting base, thereby solving the slippage problem that may exist in simple friction locking and improving the stability and reliability of locking.

[0034] In another preferred embodiment, to ensure that the torque of the locking handle can be effectively transmitted to the connecting shaft, the threaded structural member 61 and the connecting shaft 51 are circumferentially fixedly connected by a mating polygonal connecting portion and a polygonal connecting groove. The polygonal connecting portion is located at the end of the threaded structural member 61 facing the connecting shaft 51, and the polygonal connecting groove is located at the end of the connecting shaft 51 facing the threaded structural member 61. Through the mating of polygons (such as quadrilaterals or hexagons), a surface-contact torque transmission interface can be formed. This structure solves the problem of loosening or shear failure that may occur when using key or pin connections, and can reliably transmit large torques, ensuring the rigidity and durability of the connection.

[0035] In a preferred embodiment, please refer to Figure 3 A preload spring 64 is fitted onto the threaded structural component 61. One end of the preload spring 64 abuts against the locking handle 63, and the other end abuts against the first limiting member 62. The purpose of the preload spring 64 is to provide a preload force to the first limiting member 62. When the locking handle 63 is tightened, the preload spring 64 is compressed, and its elastic force ensures that the protrusion on the first limiting member 62 always falls within the groove on the first mounting base 3, preventing misalignment between the protrusion and the groove.

[0036] In one alternative implementation, see [link to relevant documentation] Figure 5 The connecting shaft 51 can be designed as a split unit, including an inner shaft 512 and an outer shaft 513 mounted on the inner shaft 512. The inner shaft 512 and the outer shaft 513 are fixedly connected by fasteners (such as screws). The two ends of the outer shaft 513 can be machined into polygonal structures to mate with the first gear 521 and the second gear 522 with polygonal holes. The two ends of the inner shaft 512 protrude from the outer shaft 513. The heads of the fasteners can protrude from the surface of the outer shaft 513, directly serving as the external protruding structure 511 of the connecting shaft 51. The split design of the connecting shaft 51 in this application makes it easier to manufacture; however, it can also be integrally formed, and this application is not limited to this.

[0037] Furthermore, to facilitate the operator's intuitive understanding of the adjustment status, please refer to... Figure 1 Both the first mounting base 3 and the second mounting base 4 have corresponding scales 7 on their sides. These scales 7 indicate the amount of extension of the mounting base relative to the housing. During adjustment, the operator can precisely control the movement distance of the two mounting bases by observing the scale values, thereby achieving quantitative adjustment of the curvature. The presence of the scales greatly improves the accuracy and convenience of adjustment.

[0038] In another alternative implementation, see [link to relevant documentation]. Figure 3 To achieve dual locking and improve safety, a second locking assembly 8 can also be provided on the second housing 2. The structure and principle of this second locking assembly 8 are similar to the first locking assembly 6, including a second limiting member 81, which is fixedly connected to the other end of the connecting shaft 51 passing through the mounting hole 21. Simultaneously, the contact surfaces between the second limiting member 81 and the second mounting base 4 are also provided with mutually cooperating limiting parts, such as grooves and protruding limiting structures. By adding the second locking assembly 8, both ends of the mechanism can be locked simultaneously, thus solving the problem of uneven torque or deformation that may exist in single-end locking in ultra-large or heavy-duty display module applications, achieving a more stable and reliable locking effect.

[0039] This application also provides a display module; please refer to [link / reference]. Figures 8 to 10 The display module includes a housing frame 9 and the curvature adjustment mechanism 100 of the display module described in any of the preceding embodiments. The housing frame 9 includes a first side frame 91 and a second side frame 92 that are parallel to each other, as well as a third side frame 93 and a fourth side frame 94 that are parallel to each other, which are connected end to end to form a rectangular frame. The first side frame 91 and the second side frame 92 are hinged together by a plurality of mutually rotatable curvature adjustment members 911, which are flexible and can be bent. Specifically, each curvature adjustment member 911 has an arc-shaped insertion part 912 at one end and an arc-shaped groove 913 at the other end. Two adjacent curvature adjustment members 911 are connected by insertion to form a rotatable connection.

[0040] In this display module, the fixed end of the curvature adjustment mechanism 100, namely the first connecting rod 95 connected to the first housing 1 and the second housing 2, is fixedly connected to the rigid third frame 93; while the moving end of the curvature adjustment mechanism 100, namely the second connecting rod 96 connected to the first mounting base 3 and the second mounting base 4, is fixedly connected to the rigid fourth frame 94. Thus, the distance between the third frame 93 and the fourth frame 94 constitutes the "chord length" of the arc formed by the flexible frame. When the curvature adjustment mechanism 100 is operated, the housing and the mounting base move relative to each other, thereby changing the chord length. This change in chord length directly leads to changes in the height and radius of curvature of the arc. For example, when the curvature length decreases, for a fixed arc length, the radius of curvature decreases, and the curvature becomes more curved; when the curvature length increases, for a fixed arc length, the radius of curvature increases, and the curvature becomes smaller.

[0041] This application embodiment also provides a method for adjusting the curvature of a display module. This method utilizes the aforementioned curvature adjustment mechanism and specifically includes the following steps: S1: Perform coarse adjustment. In the first adjustment mode, the locking handle 63 of the mechanism is in the released state, and the outer tube 53 is in its initial position. At this time, the protruding structure 511 on the connecting shaft 51 is located within the circumferential gap 532 on the inner wall of the outer tube 53, and the connecting shaft 51 can rotate freely relative to the outer tube 53. When the operator pulls the outer tube 53 to the left or right, the translational movement of the outer tube 53 is converted into the rotation of the connecting shaft 51 through an internal conversion mechanism. This rotation, in turn, drives the first mounting base 3 and the second mounting base 4 to move rapidly through the gear and rack transmission mechanism, thereby making a large-scale coarse adjustment to the curvature of the display module. The operator can observe the scale 7 on the side of the mounting base to roughly adjust the curvature to the target range.

[0042] S2: Fine-tuning. After coarse adjustment, the operator pulls the outer tube 53 towards the first housing 1, overcoming the elastic force of the elastic element 54. When the outer tube 53 moves to the designated position, its internal convex structure 531 and the external convex structure 511 on the connecting shaft 51 form a blocking engagement in the circumferential direction, and the mechanism switches to the second adjustment mode. At this time, the operator slowly rotates the outer tube 53. Because the outer tube 53 rotates synchronously with the connecting shaft 51, it can drive the first mounting base 3 and the second mounting base 4 to make very precise small displacements, thereby precisely fine-tuning the curvature of the display module until the desired curved surface effect is achieved.

[0043] S3: Lock Position. After the curvature is adjusted to the final position, the operator tightens the locking handle 63. The locking handle 63 drives the threaded structure 61, causing the protrusion on the first limiting member 62 to press into and engage with the groove on the first mounting base 3, and causing the protrusion on the second limiting member 81 to press into and engage with the groove on the second mounting base 4, thereby firmly locking the mechanism in the current position, preventing any accidental changes in curvature, and completing the entire adjustment process.

[0044] This application achieves the following effects by combining coarse and fine adjustment modes, precise gear and rack transmission, and locking components: First, it offers high adjustment efficiency, with the coarse adjustment mode enabling rapid and significant adjustments; second, it provides high adjustment precision, with the fine adjustment mode and precise gear transmission ensuring precise control; third, it offers reliable locking, with the combination of tooth meshing and thread self-locking resisting strong vibrations and impacts; and finally, it enhances the user experience with clear scale indications and straightforward operation logic. This embodiment demonstrates the advantages of this invention in terms of adjustment efficiency, precision, and reliability. The curvature adjustment mechanism and display module provided in this application can be widely used in various applications requiring the construction of curved display screens.

[0045] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the nature and scope of the present invention. Various modifications made to the above embodiments by those skilled in the art after reading this specification are all within the scope of protection of the present invention.

Claims

1. A curvature adjustment mechanism for a display module, characterized in that, include: A first housing and a second housing are spaced apart, and mounting holes are respectively provided on the first housing and the second housing. A first mounting base and a second mounting base are spaced apart, wherein the first mounting base is horizontally movable and inserted into the first housing, and the second mounting base is horizontally movable and inserted into the second housing; The drive assembly includes a connecting shaft, transmission units disposed at both ends of the connecting shaft, and an outer tube sleeved on the outside of the connecting shaft. The transmission units at both ends of the connecting shaft are respectively connected to the first mounting base and the second mounting base, and the rotation of the connecting shaft drives the first mounting base and the second mounting base to move horizontally through the transmission units. One end of the outer tube abuts against the second housing, and the other end of the outer tube abuts against the first housing through an elastic element. The elastic element has an elastic force that causes the outer tube to move toward the second housing. At least one outwardly protruding structure is provided on the outer wall of the connecting shaft, and at least one inwardly protruding structure is provided on the inner wall of the outer tube. The side of the inwardly protruding structure near the first housing has a circumferential gap. The outer tube is adapted to operate in the first adjustment mode and the second adjustment mode. In the first adjustment mode, the convex structure is located within the circumferential gap, and the connecting shaft can rotate relative to the outer tube. The translation of the outer tube achieves coarse adjustment of the curvature. In the second adjustment mode, after the outer tube is pulled towards the first housing, the convex structure and the inner convex structure form a blocking engagement in the circumferential direction. Rotating the outer tube can drive the connecting shaft to rotate synchronously, achieving fine adjustment of the curvature.

2. The curvature adjustment mechanism of the display module according to claim 1, characterized in that, The transmission unit includes a first gear and a second gear fixedly sleeved at both ends of the connecting shaft, and a first rack and a second rack respectively disposed on the first mounting base and the second mounting base; the connecting shaft passes through the mounting holes of the first housing and the second housing and can rotate around its own axis; the first rack meshes with the first gear, and the second rack meshes with the second gear.

3. The curvature adjustment mechanism of the display module according to claim 1, characterized in that, A circumferential abutment is provided on the inner wall of the outer tube near one end of the first housing; one end of the elastic element abuts against the first housing, and the other end abuts against the abutment; the circumferential gap is located between the abutment and the inner convex structure.

4. The curvature adjustment mechanism of the display module according to claim 1, characterized in that, The first housing is provided with a first locking assembly, which includes a threaded structural member, a first limiting member, and a locking handle. The first limiting member is disposed in the mounting hole of the first housing and is located on the side of the first rack away from the second housing along the axial direction of the connecting shaft. The threaded structural member passes through the first limiting member and is fixedly connected to one end of the connecting shaft. The locking handle is threadedly connected to the threaded structural member. The mutual contact surfaces of the first limiting member and the first mounting base are provided with mutually cooperating limiting portions.

5. The curvature adjustment mechanism of the display module according to claim 4, characterized in that, The mutually cooperating limiting parts include a first limiting part and a second limiting part. The first limiting part is disposed on the lower surface of the first limiting member, and the second limiting part is disposed on the side of the first rack. One of the first limiting part and the second limiting part is a protrusion, and the other is a groove.

6. The curvature adjustment mechanism of the display module according to claim 4, characterized in that, A preload spring is fitted onto the threaded structural component. One end of the preload spring abuts against the locking handle, and the other end abuts against the first limiting component.

7. The curvature adjustment mechanism of the display module according to claim 1, characterized in that, The first and second mounting bases each have corresponding scales on their sides.

8. The curvature adjustment mechanism of the display module according to claim 1, characterized in that, The second housing is provided with a second locking assembly, which includes a second limiting member. The second limiting member is fixedly connected to one end of the connecting shaft that passes through the mounting hole. The contact surfaces of the second limiting member and the second mounting base are provided with mutually cooperating limiting portions, which are limiting structures consisting of a groove and a protrusion.

9. A display module, comprising a cabinet frame and an arc adjustment mechanism for the display module according to any one of claims 1-8, wherein the cabinet frame comprises a first side frame, a second side frame, a third side frame and a fourth side frame, wherein the first side frame and the second side frame are disposed opposite to each other, the third side frame and the fourth side frame are disposed opposite to each other, and the first side frame, the second side frame, the third side frame and the fourth side frame are connected end to end in sequence to form a rectangular frame. The first frame and the second frame each include a plurality of interconnected arc adjustment components. One end of each arc adjustment component is provided with an arc-shaped insertion part, and the other end is provided with an arc-shaped groove. Two adjacent arc adjustment components are inserted and engaged through the arc-shaped insertion part and the arc-shaped groove. The ends of the first housing and the second housing away from the connecting shaft are hinged to the first connecting rod, the first connecting rod is detachably and fixedly connected to the third frame, the ends of the first mounting base and the second mounting base away from the connecting shaft are hinged to the second connecting rod, and the second connecting rod is detachably and fixedly connected to the fourth frame.

10. A method for adjusting the curvature of a display module, characterized in that: Includes the following steps: S1: In the first adjustment mode, the outer tube is in the initial state, and the convex structure of the connecting shaft is located in the circumferential gap. Pulling the outer tube to the left or right will cause the outer tube to move and drive the connecting shaft to rotate, thereby achieving coarse adjustment of the curvature. S2: In the second adjustment mode, the outer tube is pulled towards the first housing. The outer tube overcomes the elastic force of the elastic element and moves towards the first housing until the outer convex structure of the connecting shaft and the inner convex structure of the outer tube form a blocking fit in the circumferential direction. Rotating the outer tube causes the outer tube to drive the connecting shaft to rotate synchronously, thereby achieving fine adjustment of the curvature. S3: Locks the curvature of the display module to the adjusted position.

Images