An arc lock mechanism and display screen

Abstract

The utility model belongs to display screen technical field especially relates to a kind of radian lock mechanism and display screen.Radian lock mechanism includes: fixed seat, for fixed installation on cabinet frame, and fixed seat is equipped with guiding structure;Sliding seat, with fixed seat sliding fit connection;Angle adjustment locking assembly, installation on fixed seat and with sliding seat cooperation, for driving sliding seat along the preset sliding track of guiding structure slip;Wherein, the connecting place of fixed seat and cabinet frame is equipped with first L type limiting structure, and first L type limiting structure includes the first horizontal part and the first vertical part of being connected, and first horizontal part is used to be fixedly connected with cabinet frame, and first vertical part is used to abut against the outer wall of cabinet frame and realize limiting.This radian lock mechanism is designed by adding first L type limiting structure, avoid the connection slack possibly caused by long-term use or external force impact, enhance the connection strength, to ensure the durability and reliability of entire locking state.

Description

Technical Field

[0001] This utility model belongs to the field of display screen technology, and in particular relates to an arc locking mechanism and a display screen. Background Technology

[0002] In modern applications such as commercial displays, stage rentals, command centers, and large-scale exhibitions, multiple independent display cabinets are typically densely spliced ​​horizontally or vertically to form a visually coherent, customizable large display wall. To enhance visual immersion or adapt to specific venue layouts, the splicing design is often not limited to traditional planar matrices but needs to form inner curves, outer curves, or even more complex three-dimensional curved surfaces. Therefore, special connecting mechanisms are required between the cabinets to achieve splicing at different angles.

[0003] Existing curved connection mechanisms typically include a base fixed to the cabinet and a connector that can move relative to the base, changing the angle between adjacent cabinets by adjusting the position of the connector. However, in actual installation, the base of such connection mechanisms is usually only fixed to the cabinet frame with bolts. When tightening the bolts, the base is prone to uneven forces, causing slight rotation or displacement, resulting in its installation position deviating from the preset reference. This initial installation error accumulates and amplifies as the number of splices increases, ultimately affecting the flatness and curvature accuracy of the entire splicing screen, requiring repeated adjustments by installers and reducing installation efficiency.

[0004] Meanwhile, traditional cabinet frames generally use aluminum alloy profiles or steel structures. While these materials are sturdy, their weight makes individual display units (including display modules) very heavy. This not only burdens transportation and warehousing, but more importantly, during on-site installation, the heavy cabinets pose significant difficulties for high-altitude operations, precise alignment, and fine-tuning of connection mechanisms. This presents a severe test of the physical strength and safety of installation personnel and limits the ability to deploy quickly and reconfigure flexibly.

[0005] Therefore, this utility model provides a novel arc-shaped locking mechanism and display screen to overcome the above-mentioned defects. Utility Model Content

[0006] One objective of this invention is to provide an arc-shaped locking mechanism that, by adding a first L-shaped limiting structure, avoids loosening of the connection that may be caused by long-term use or external impact, enhances the connection strength, and thus ensures the durability and reliability of the entire locking state.

[0007] This utility model adopts the following technical solution: an arc-shaped locking mechanism, comprising:

[0008] A mounting base is used for fixed installation on the housing frame, and the mounting base is provided with a guide structure;

[0009] The sliding seat is slidably connected to the fixed seat.

[0010] An angle adjustment and locking component is installed on the fixed base and cooperates with the sliding base to drive the sliding base to slide along a preset sliding trajectory of the guide structure;

[0011] The connection between the fixed base and the box frame is provided with a first L-shaped limiting structure. The first L-shaped limiting structure includes a first horizontal part and a first vertical part connected together. The first horizontal part is used to be fixedly connected to the box frame, and the first vertical part is used to abut against the outer wall of the box frame to achieve limiting.

[0012] Furthermore, the guide structure includes a first support shaft and a second support shaft disposed on the fixed base, and the first support shaft and the second support shaft are spaced apart along the preset sliding trajectory;

[0013] The sliding seat is provided with a sliding groove, and the first support shaft and the second support shaft pass through the sliding groove to support and guide the sliding seat to slide.

[0014] Furthermore, the sliding seat is provided with multiple positioning grooves at intervals along its sliding direction;

[0015] The fixed base is provided with an elastic positioning component, which includes a positioning bead that matches the positioning groove and a first spring; one end of the first spring is connected to the fixed base and the other end is connected to the positioning bead. Under the elastic force of the first spring, the positioning bead selectively engages in any of the positioning grooves to achieve gear positioning.

[0016] Compared with the prior art, the beneficial effects of the arc-shaped locking mechanism in this utility model are as follows:

[0017] In this invention, the arc-shaped locking mechanism allows the operator to drive the angle adjustment locking component to transmit operating force to the sliding seat, causing it to move along the guide structure on the fixed seat. Since the sliding seat can be connected to a housing frame via a quick-lock mechanism, its sliding directly changes the angle of that housing frame relative to another housing frame with a fixed seat, thus achieving continuous adjustment of the arc. Once the desired angle is reached, the angle adjustment locking component is operated further to generate a locking force, firmly pressing the sliding seat against the current relative position of the fixed seat, thereby securely locking the two housing frames 1 at the set included angle.

[0018] When installing the display screen, the installers first place the mounting base of the arc-shaped locking mechanism in the predetermined installation position on the cabinet frame. During installation, the first horizontal part of the first L-shaped limiting structure of the mounting base must be aligned with the mounting plane of the cabinet frame and reliably fixed with fasteners to bear the main connection load. At the same time, the first vertical part of the first L-shaped limiting structure should be tightly aligned with the outer wall of the cabinet frame.

[0019] The design of this first L-shaped limiting structure enables rapid and precise positioning during the installation phase. The first horizontal section provides a stable mounting base, while the first vertical section provides a rigid constraint on the fixing seat from the side, together forming a solid installation foundation. This structure effectively resists lateral torsional forces and overturning moments generated during use, significantly enhancing the torsional and bending stiffness at the connection between the fixing seat and the housing frame. This prevents loosening of the connection due to long-term use or external impacts, thus ensuring the durability and reliability of the entire locking state.

[0020] The second objective of this utility model is to provide a display screen, which includes:

[0021] At least two box-frame structures;

[0022] The display module is installed on each of the aforementioned housing frames;

[0023] A quick-lock mechanism is provided on one side of at least one of the housing frames;

[0024] An arc-shaped locking mechanism is disposed on one side of at least one of the other housing frames and connected to the quick-locking mechanism, so that the two adjacent housing frames are arranged in an arc shape;

[0025] The arc locking mechanism is as described in any of the preceding claims.

[0026] Furthermore, the box frame is made of carbon fiber.

[0027] Furthermore, the display screen also includes:

[0028] A central control mechanism is fixedly provided in the middle of each of the box frames along its length;

[0029] The central control mechanism is provided with a metal conductive component, which is electrically connected to the display module; and / or, the central control mechanism is provided with a first handle at both the upper and lower ends.

[0030] Furthermore, the central control mechanism is fixedly installed on the housing frame via a locking assembly;

[0031] The locking assembly includes:

[0032] A base, which is fixedly installed on the housing frame, and a spiral channel is provided on the base;

[0033] The lock cylinder has a protrusion at its bottom, which is located within the spiral channel to allow the lock cylinder to move along the spiral channel.

[0034] A lock handle having a receiving space, the top of which is inserted into the receiving space of the lock handle;

[0035] A pin is inserted in a direction perpendicular to the axial direction of the lock cylinder and securely connects the lock handle to the lock cylinder.

[0036] The second spring is disposed in the receiving space of the lock handle, located between the housing frame and one end of the pin;

[0037] Rotating the lock handle can move the lock cylinder along the spiral channel to open and lock the locking assembly.

[0038] Furthermore, the bottom of the housing frame is provided with at least two positioning protrusions, which are configured to cooperate with the display module to support the display screen in an upright position.

[0039] Furthermore, the display module includes:

[0040] The display module bottom shell has multiple positioning bosses; the supporting surfaces of all the positioning bosses are coplanar.

[0041] The display module cover plate is fastened and installed on the bottom shell of the display module.

[0042] Furthermore, the display screen also includes:

[0043] A right-angle connector is provided with a first locking member and a second locking member that are perpendicular to each other; wherein, the first locking member is fixedly connected to one side of one of the box frames, and the second locking member is fixedly connected to one side of another adjacent box frame, so that the two adjacent box frames are arranged perpendicularly. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1This is a schematic diagram of the arc lock mechanism according to a specific embodiment of the present utility model;

[0046] Figure 2 for Figure 1 A sectional view;

[0047] Figure 3 This is a schematic diagram of the structure of the display screen in a specific embodiment of the present utility model. Figure 1 ;

[0048] Figure 4 This is a schematic diagram of the structure of the display screen in a specific embodiment of the present utility model. Figure 2 ;

[0049] Figure 5 for Figure 4 Enlarged view of a portion of point A in the middle;

[0050] Figure 6 for Figure 3 Schematic diagram of the right-angle connector;

[0051] Figure 7 for Figure 3 The rear view of the central control mechanism in the image shows the metal conductive components inside the central control mechanism;

[0052] Figure 8 for Figure 3 Schematic diagram of the structure of the middle box frame, central control mechanism, right-angle connectors and arc locking mechanism;

[0053] Figure 9 for Figure 8 Enlarged view of a section at point B in the middle;

[0054] Figure 10 for Figure 8 Schematic diagram of the middle part of the structure;

[0055] Figure 11 for Figure 10 Enlarged view of a section at point C;

[0056] Figure 12 for Figure 3 The diagram shows the structure of the display module;

[0057] Figure 13 for Figure 12 The diagram shows the bottom shell structure of the display module;

[0058] The components include: a housing frame 1, a positioning protrusion 10, and a beveled surface 11; an arc-shaped locking mechanism 2, a fixed base 20, a first L-shaped limiting structure 201, a first horizontal part 201-1, a first vertical part 201-2, a positioning bead 202, a first spring 203, a sliding seat 21, a sliding groove 211, a positioning groove 212, an angle adjustment locking assembly 22, a guide structure 23, a first support shaft 231, and a second support shaft 232; a display module 3, a display module bottom shell 30, a positioning boss 301, and a second handle. Hand 302, display module cover 31; quick lock mechanism 4, quick lock base 40, second L-shaped limiting structure 401, second horizontal part 401-1, second vertical part 401-2; central control mechanism 5, metal conductive part 50, first handle 51, limiting boss 52; locking assembly 6, base 60, spiral channel 601, lock cylinder 61, protrusion 611, lock handle 62, limiting groove 621, pin 63, second spring 64; right angle connector 7, first locking part 70, second locking part 71. Detailed Implementation

[0059] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0060] The following is in conjunction with the appendix Figure 1 To be continued Figure 13 The present invention will be described in detail with reference to specific embodiments:

[0061] like Figures 1 to 2 As shown, this utility model provides an arc-shaped locking mechanism 2, which includes:

[0062] The fixed seat 20 serves as the base of the entire mechanism and is used to be fixedly installed on the box frame 1. The fixed seat 20 is provided with a guide structure 23, which provides a preset sliding trajectory and support for the movement of the sliding seat 21.

[0063] The sliding seat 21 is a moving part for angle adjustment, and it is slidably connected to the fixed seat 20.

[0064] An angle adjustment and locking component 22 is installed on the fixed base 20 and cooperates with the sliding base 21. It is used to drive the sliding base 21 to slide along the preset sliding trajectory of the guide structure 23 and lock it after reaching the target position.

[0065] The connection between the fixing base 20 and the box frame 1 is provided with a first L-shaped limiting structure 201. The first L-shaped limiting structure 201 can be integrally formed with the fixing base 20, or it can be manufactured separately and then firmly welded or connected to the fixing base 20 by screws. The first L-shaped limiting structure 201 includes a first horizontal part 201-1 and a first vertical part 201-2 connected to each other, which are perpendicular or approximately perpendicular to each other, forming an "L" shaped cross-sectional profile.

[0066] The first horizontal part 201-1 is used for fixed connection with the housing frame 1. Specifically, at least one mounting hole, such as a countersunk screw hole, can be provided on the first horizontal part 201-1. During installation, fasteners such as bolts or screws are passed through these mounting holes to fasten the entire fixing seat 20 to the housing frame 1.

[0067] The first vertical part 201-2 is a side or wall panel extending from the edge of the first horizontal part 201-1, which is used to abut against the outer wall of the box frame 1 to achieve a limiting position when the mounting base 20 is installed.

[0068] In this invention, the arc-shaped locking mechanism is operated by an operator who drives the angle adjustment locking component 22 to transmit the operating force to the sliding seat 21, causing it to move along the guide structure 23 on the fixed seat 20. Since the sliding seat 21 is connected to a housing frame 1 via a quick-lock mechanism, its sliding directly changes the angle of that housing frame 1 relative to another housing frame 1 equipped with a fixed seat 20, thus achieving continuous adjustment of the arc. Once the desired angle is reached, the angle adjustment locking component 22 is operated again to generate a locking force, firmly pressing the sliding seat 21 against the current relative position of the fixed seat 20, thereby securely locking the two housing frames 1 at the set included angle.

[0069] When installing the display screen, the installers first place the mounting base 20 of the arc-shaped locking mechanism at the predetermined installation position on the cabinet frame 1. During installation, the first horizontal portion 201-1 of the first L-shaped limiting structure 201 of the mounting base 20 must be fitted against the mounting plane of the cabinet frame 1 and reliably fixed with fasteners to bear the main connection load. At the same time, the first vertical portion 201-2 of the first L-shaped limiting structure 201 should be tightly fitted against the outer wall of the cabinet frame 1.

[0070] The design of the first L-shaped limiting structure 201 enables rapid and precise positioning during the installation phase. The first horizontal part 201-1 provides a stable mounting base, while the first vertical part 201-2 provides a rigid constraint on the fixing seat 20 from the side, together forming a solid installation foundation. This structure can effectively resist lateral torsional forces and overturning moments generated during use, significantly enhancing the torsional and bending stiffness at the connection between the fixing seat 20 and the housing frame 1, preventing loosening of the connection due to long-term use or external impact, thus ensuring the durability and reliability of the entire locking state.

[0071] It should be noted that the angle adjustment and locking component 22 is not specifically limited in this utility model. As long as it can realize the angle adjustment and locking functions, it can be designed by those skilled in the art according to the actual situation.

[0072] Furthermore, in some specific embodiments, the guide structure 23 includes a first support shaft 231 and a second support shaft 232 disposed on the fixed base 20, and the first support shaft 231 and the second support shaft 232 are spaced apart along the preset sliding trajectory.

[0073] The sliding seat 21 has a sliding groove 211, through which the first support shaft 231 and the second support shaft 232 pass to support and guide the sliding seat 21. When the sliding seat 21 moves, the inner wall of the sliding groove 211 contacts the outer circumferential surface of the two support shafts. Compared with surface contact guide rails, this dual-axis contact guiding method has the advantages of less friction and smoother movement. At the same time, the two spaced support shafts provide stable support for the sliding seat 21 in both vertical and horizontal directions, effectively preventing the sliding seat 21 from tilting or shaking when subjected to force, thereby ensuring the stability of its sliding posture and making the angle adjustment process smoother and more precise.

[0074] Furthermore, in some specific embodiments, such as Figure 2 As shown, the sliding seat 21 is provided with a plurality of positioning grooves 212 at intervals along its sliding direction. These positioning grooves 212 can be V-shaped grooves, U-shaped grooves, or hemispherical recesses. The position of each positioning groove 212 precisely corresponds to a commonly used splicing angle, such as -5 degrees, -2.5 degrees, 0 degrees, +2.5 degrees, +5 degrees, etc.

[0075] The fixed base 20 is provided with an elastic positioning component, which includes a positioning bead 202 that matches the positioning groove 212 and a first spring 203. The positioning bead 202 is typically a high-hardness steel ball, and its head shape matches the shape of the positioning groove 212 to achieve a good engagement. One end of the first spring 203 is connected to the bottom of a blind hole inside the fixed base 20, and the other end is connected to the positioning bead 202. Under the elastic force of the first spring 203, the positioning bead 202 selectively engages in either of the positioning grooves 212 to achieve gear positioning.

[0076] When the operator adjusts the locking component 22 to drive the sliding seat 21 to slide, the sliding seat 21 moves smoothly along a preset sliding trajectory under the guidance of the first support shaft 231 and the second support shaft 232. During this process, the head of the positioning bead 202 of the elastic positioning component fixed on the fixed seat 20 will continuously contact the side wall surface of the sliding seat 21 with the positioning groove 212.

[0077] When the sliding seat 21 moves to a certain position, such that a positioning groove 212 is precisely aligned with the positioning bead 202, the positioning bead 202 will automatically engage with the positioning groove 212 under the elastic force of the first spring 203. This engaging action provides the operator with clear tactile feedback and audible prompts, clearly informing them that a preset angle setting has been reached. If it is necessary to continue adjusting to the next angle setting, the operator only needs to apply a driving force sufficient to overcome the elastic force of the first spring 203, causing the positioning bead 202 to disengage from the current positioning groove 212 and continue sliding along the side wall of the sliding seat 21 until it engages with the next positioning groove 212.

[0078] The segmented positioning design offers several advantages. First, it allows for extremely quick and convenient angle setting. Installers don't need to carefully observe scale lines or rely on measuring tools; they can quickly set the splicing angle to common values ​​such as -5 degrees, 0 degrees, or +5 degrees simply by touch and sound. This significantly improves work efficiency in rental and stage applications that require large-scale, rapid setup of curved displays. Second, because each segment is precisely defined by a mechanical structure, it ensures a high degree of consistency and repeatability in angle settings, guaranteeing the uniformity and aesthetics of the entire splicing screen's curvature.

[0079] Based on the aforementioned arc-shaped locking mechanism 2, this utility model also provides a display screen, such as... Figures 3 to 13 As shown, the display screen includes:

[0080] At least two cabinet frames 1, which serve as the load-bearing structure of the display screen and are used to install and protect the internal display modules 3, power supply, control cards and other electronic components; in this embodiment, both sides of the cabinet frame 1 are beveled surfaces 11 to facilitate splicing between adjacent display screens.

[0081] Display module 3 is installed on each of the aforementioned housing frames 1; specifically, display module 3 is the core component for realizing image display, and can be installed on the front of housing frame 1 by screws or other fastening methods;

[0082] A quick-lock mechanism 4 is disposed on one side of at least one of the housing frames 1;

[0083] An arc-shaped locking mechanism 2 is disposed on one side of at least one of the other box frames 1 and connected to the quick-locking mechanism 4, so that the two adjacent box frames 1 are arranged in an arc.

[0084] Wherein, the arc locking mechanism 2 is any one of the arc locking mechanisms described above.

[0085] The process of arc splicing is as follows: First, the arc locking mechanism 2 is precisely installed. The construction personnel install the fixing seat 20 of the arc locking mechanism 2 on the connecting side of a box frame 1, and ensure that the first vertical part 201-2 of the first L-shaped limiting structure 201 of the fixing seat 20 is tightly against the outer wall of the box frame 1.

[0086] Next, the splicing angle is set. The two box frames 1 to be spliced ​​are aligned side-by-side. According to the design requirements, the operator operates the arc-shaped locking mechanism 2 installed on the first box frame 1. By rotating its angle adjustment locking component 22, the sliding seat 21 is moved to the preset angle position. Then, the connection is locked. The quick-locking mechanism 4 on the second box frame 1 is aligned with the sliding seat 21 of the arc-shaped locking mechanism 2 on the first box frame 1, so that the locking hook of the quick-locking mechanism 4 hooks onto the pre-reserved locking pin or attachment point on the sliding seat 21. Subsequently, the quick-locking mechanism 4 is operated to tighten its locking hook, generating a strong pulling force that tightly pulls the two box frames 1 together. At this point, the two box frames 1 are firmly spliced ​​together at the preset angle.

[0087] By repeating the above steps and assembling more cabinet frames 1 one by one, a large, lightweight display screen with a smooth curve can be quickly and accurately built.

[0088] Specifically, to achieve a lightweight design for the entire display screen, in this embodiment, the cabinet frame 1 is made of carbon fiber. Carbon fiber is a high-performance composite material that, compared to traditional aluminum alloys or steel, has extremely high specific strength and specific stiffness, while significantly reducing density. The cabinet frame 1 made of carbon fiber, while ensuring sufficient structural strength, is much lighter than a metal frame of the same size. This greatly reduces the overall weight of the display screen, facilitating handling, installation, and disassembly, significantly reducing the workload of staff, and effectively saving transportation costs, making it particularly suitable for occasions requiring frequent disassembly and transportation, such as stage rentals, exhibitions, and touring performances.

[0089] It should be noted that the specific structure of the quick-lock mechanism 4 in this utility model is not limited, and can be designed by those skilled in the art according to the actual situation, as long as it can cooperate with the arc-shaped locking mechanism 2 to achieve arc splicing between adjacent display screens. Meanwhile, due to the setting of the beveled surfaces 11 on both sides of the cabinet frame 1, the overhang length of the quick-lock mechanism 4 is extended. Therefore, a second L-shaped limiting structure 401 can also be set on the quick-lock base 40 in the quick-lock mechanism 4, such as... Figure 5 As shown, the second L-shaped limiting structure 401 can be integrally formed with the quick-lock base 40, or it can be manufactured separately and then firmly welded or connected to the quick-lock base 40 by screws. The second L-shaped limiting structure 401 includes a connected second horizontal part 401-1 and a second vertical part 401-2, which are perpendicular or nearly perpendicular to each other, forming an "L" shaped cross-sectional profile.

[0090] The second horizontal part 401-1 is used for fixed connection with the housing frame 1. Specifically, at least one mounting hole, such as a countersunk screw hole, can be provided on the second horizontal part 401-1. During installation, fasteners such as bolts or screws are passed through these mounting holes to fasten the entire quick-lock base 40 to the housing frame 1.

[0091] The second vertical part 401-2 is a side or wall panel extending from the edge of the second horizontal part 401-1. When the quick-lock base 40 is installed, it is used to abut against the outer wall of the box frame 1 to achieve a limit and enhance the connection strength.

[0092] Furthermore, in some specific embodiments, the display screen further includes:

[0093] The central control mechanism 5 is fixedly provided in the middle of each of the box frames 1 along its length direction, and the central control mechanism 5 has integrated electrical functions.

[0094] Since the carbon fiber frame 1 is non-conductive, a metal conductive element 50 is provided within the central control mechanism 5. This metal conductive element 50 is electrically connected to the display module 3, further completing the grounding process. Specifically, by integrating the metal conductive element 50 within the central control mechanism 5, the electrical safety hazards and signal integrity issues caused by the non-conductive nature of the carbon fiber frame are effectively resolved. While fully retaining the lightweight advantages of carbon fiber, a reliable low-impedance grounding path and electrical connection hub are established inside the display screen, ensuring that the system complies with safety regulations, has strong anti-interference capabilities, and operates stably.

[0095] In this embodiment, a first handle 51 is provided at either the upper or lower end of the central control mechanism 5, or both the upper and lower ends of the central control mechanism 5 may be provided with a first handle 51. The shape of the first handle 51 conforms to ergonomics, making it easy for workers to grip. Since the housing frame 1 is made of extremely lightweight carbon fiber, only one first handle 51 can be provided on the central control mechanism 5, enabling single-handed gripping and handling of a single display unit, making operation convenient. More preferably, the central control mechanism 5 is provided with a first handle 51 at both the upper and lower ends. This double-handle design allows workers to hold the first handles 51 at both ends with both hands when handling a single display unit, making the handling process more effortless, stable, and safe. At the same time, when splicing adjacent display units, the operator can hold the upper first handle 51 with one hand and support the lower first handle 51 with the other hand, achieving stable lifting and precise alignment of the unit, greatly improving the convenience and efficiency of on-site installation.

[0096] Furthermore, in some specific embodiments, the central control mechanism 5 is fixedly mounted on the housing frame 1 by a locking assembly 6, such as... Figure 10 , 11 As shown.

[0097] The locking component 6 includes:

[0098] The base 60 is fixedly installed on the box frame 1, and the base 60 is provided with a spiral channel 601;

[0099] The lock cylinder 61 has a protrusion 611 at its bottom, which is located inside the spiral channel 601 so that the lock cylinder 61 can move along the spiral channel 601.

[0100] The lock handle 62 has a receiving space, and the top of the lock cylinder 61 is inserted into the receiving space of the lock handle 62;

[0101] A pin 63 is inserted in a direction perpendicular to the axial direction of the lock cylinder 61 and fixes the lock handle 62 to the lock cylinder 61.

[0102] The second spring 64 is disposed in the receiving space of the lock handle 62, located between the box frame 1 and one end of the pin 63;

[0103] Rotating the lock handle 62 causes the lock cylinder 61 to move along the spiral channel 601, thereby opening and locking the locking assembly 6. It should be noted that the spiral channel 601 itself has a self-locking characteristic; in the locked state, it is difficult to reverse its direction using only axial force, resulting in excellent mechanical anti-loosening performance.

[0104] The general working process of the locking component 6 is as follows:

[0105] In the locked state, the protrusion 611 at the bottom of the lock cylinder 61 is located at the lower end of the spiral channel 601, and the lock cylinder 61 is at the lower end of its axial travel. The top of the lock cylinder 61, through the connection formed by the lock handle 62 and the pin 63, presses and fixes the central control mechanism 5 to the housing frame 1. The second spring 64 is in a compressed state, and its elastic force is transmitted through the pin 63, so that the entire locking system maintains preload and prevents loosening.

[0106] When the central control mechanism 5 needs to be disassembled, the operator rotates the lock handle 62. The lock handle 62 drives the lock cylinder 61 to rotate synchronously via the pin 63. Because the protrusion 611 at the bottom of the lock cylinder 61 is constrained by the spiral channel 601 on the base 60, the lock cylinder 61 is forced to move upward along the trajectory of the spiral channel 601 while rotating, thus generating axial displacement. This displacement releases the pressure of the lock cylinder 61 on the central control mechanism 5, achieving unlocking. During this process, the elastic force of the second spring 64 is released, preparing for relocking.

[0107] Next, after reinstalling the central control mechanism 5, rotate the lock handle 62 in the reverse direction. Guided by the spiral channel 601, the lock cylinder 61 rotates in the reverse direction and moves axially in the opposite direction, pressing against the central control mechanism 5 again until it is secure. During this process, the elastic force of the second spring 64 plays an auxiliary role in pressing, ensuring reliable locking.

[0108] The locking assembly 6 can complete the entire locking and unlocking process simply by rotating the locking handle 62, requiring no tools (such as screwdrivers or wrenches), achieving true hands-free operation. This greatly improves the efficiency of installation, maintenance, and replacement of the central control mechanism 5, making it particularly suitable for occasions requiring frequent adjustments or modular replacements.

[0109] Specifically, a limiting boss 52 can be provided on the outer wall of the central control mechanism 5, and correspondingly, a limiting groove 621 matching the limiting boss 52 is provided at the bottom of the lock handle 62. When the lock handle 62 is rotated to lock or unlock, the lock cylinder 61 moves along the spiral channel 601. When the lock cylinder 61 moves to the theoretical end point of its spiral stroke (i.e., the locked or fully unlocked position), the side wall of the limiting groove 621 at the bottom of the lock handle 62 abuts against the side wall of the limiting boss 52 on the outer wall of the central control mechanism 5. The above abutment forms a rigid mechanical interference, which physically prevents the lock handle 62 and the lock cylinder 61 from continuing to rotate in the original direction, thereby preventing damage to the internal mechanism caused by excessive force of the operator, and improving the mechanical durability and overall reliability of the locking assembly 6. At the same time, when the locking handle 62 is rotated to the limit point, the operator will feel a significant increase in resistance, thus obtaining clear tactile feedback of "locked in place" or "fully unlocked", eliminating the uncertainty of operation, improving the intuitiveness and safety of operation, and preventing the connection from loosening due to insufficient locking.

[0110] Furthermore, in some specific embodiments, the bottom of the housing frame 1 is provided with at least two positioning protrusions 10, which are configured to cooperate with the display module 3 to support the display screen in an upright position. When the display screen needs to be placed on the ground for debugging, maintenance, or as the bottom layer of a floor-standing screen, the positioning protrusions 10, in conjunction with the edge of the display module 3, can provide stable support for it, keeping it in an upright position.

[0111] Furthermore, in some specific embodiments, in order to ensure that the final spliced ​​large screen has excellent flatness, the structure of the display module 3 has been optimized in this embodiment.

[0112] Specifically, the display module 3 includes:

[0113] Display module bottom shell 30, such as Figure 13 As shown, the display module bottom shell 30 is provided with a plurality of positioning bosses 301; the supporting surfaces of all the positioning bosses 301 are arranged on the same plane.

[0114] Display module cover plate 31 is fastened and installed on the display module bottom shell 30.

[0115] It should be noted that all these positioning bosses 301 undergo high-precision machining to ensure they are strictly on the same plane, with their coplanarity deviation controlled within a very small range, for example, a flatness deviation of no more than 0.2mm. When these highly flat display modules 3 are installed into the cabinet frame 1, it is guaranteed that the display module 3 on the surface of each display screen is flat. When multiple such displays are spliced ​​together, the flatness of the entire large screen is also guaranteed, effectively eliminating problems such as bright and dark lines and uneven seams caused by tolerance accumulation.

[0116] Specifically, the positioning boss 301 may also have a magnetic attraction function, so that when the display module cover plate 31 is fastened to the display module bottom shell 30, a magnetic attraction is formed between the display module cover plate 31 and the positioning boss 301, thereby further enhancing the connection stability between the two.

[0117] Specifically, a second handle 302 can be provided on the outer wall of the display module bottom shell 30 to facilitate gripping and handling of the display module 3. In this utility model, the display module bottom shell 30 can be integrally molded using injection molding, ensuring that its overall structure has the mechanical strength to meet usage requirements.

[0118] Furthermore, to further expand the application range of the display screen, this embodiment also provides an optional right-angle connector 7. That is, in some specific embodiments, the display screen may further include:

[0119] Right-angle connector 7, such as Figure 6 As shown, the right-angle connector 7 is provided with a first locking member 70 and a second locking member 71 that are perpendicular to each other. These two locking members can be quick-lock structures that cooperate with the pre-drilled lock holes on the cabinet frame 1. When it is necessary to build a right-angle corner screen, a cube screen, or other shapes that require 90-degree vertical splicing, the right-angle connector 7 can be used. By fixing the first locking member 70 to one side of one of the cabinet frames 1, and then fixing the second locking member 71 to one side of the adjacent cabinet frame 1, a precise 90-degree vertical connection between two adjacent cabinet frames 1 can be quickly and stably achieved.

[0120] 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 substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. An arc-shaped locking mechanism, characterized in that: It includes: A mounting base is used for fixed installation on the housing frame, and the mounting base is provided with a guide structure; The sliding seat is slidably connected to the fixed seat. An angle adjustment and locking component is installed on the fixed base and cooperates with the sliding base to drive the sliding base to slide along a preset sliding trajectory of the guide structure; The connection between the fixed base and the box frame is provided with a first L-shaped limiting structure. The first L-shaped limiting structure includes a first horizontal part and a first vertical part connected together. The first horizontal part is used to be fixedly connected to the box frame, and the first vertical part is used to abut against the outer wall of the box frame to achieve limiting.

2. The arc-shaped locking mechanism according to claim 1, characterized in that: The guide structure includes a first support shaft and a second support shaft disposed on the fixed base, and the first support shaft and the second support shaft are spaced apart along the preset sliding trajectory; The sliding seat is provided with a sliding groove, and the first support shaft and the second support shaft pass through the sliding groove to support and guide the sliding seat to slide.

3. The arc-shaped locking mechanism according to claim 1, characterized in that: The sliding seat is provided with multiple positioning grooves at intervals along its sliding direction; The fixed base is provided with an elastic positioning component, which includes a positioning bead that matches the positioning groove and a first spring; one end of the first spring is connected to the fixed base and the other end is connected to the positioning bead. Under the elastic force of the first spring, the positioning bead selectively engages in any of the positioning grooves to achieve gear positioning.

4. A display screen, characterized in that: It includes: At least two box-frame structures; The display module is installed on each of the aforementioned housing frames; A quick-lock mechanism is provided on one side of at least one of the housing frames; An arc-shaped locking mechanism is disposed on one side of at least one of the other housing frames and connected to the quick-locking mechanism, so that the two adjacent housing frames are arranged in an arc shape; The arc locking mechanism is the arc locking mechanism as described in any one of claims 1 to 3.

5. The display screen according to claim 4, characterized in that: The box frame is made of carbon fiber.

6. The display screen according to claim 5, characterized in that: The display screen also includes: A central control mechanism is fixedly provided in the middle of each of the box frames along its length; The central control mechanism is provided with a metal conductive component, which is electrically connected to the display module; and / or, the central control mechanism is provided with a first handle at both the upper and lower ends.

7. The display screen according to claim 6, characterized in that: The central control mechanism is fixedly installed on the housing frame by a locking assembly; The locking assembly includes: A base, which is fixedly installed on the housing frame, and a spiral channel is provided on the base; The lock cylinder has a protrusion at its bottom, which is located within the spiral channel to allow the lock cylinder to move along the spiral channel. A lock handle having a receiving space, the top of which is inserted into the receiving space of the lock handle; A pin is inserted in a direction perpendicular to the axial direction of the lock cylinder and securely connects the lock handle to the lock cylinder. The second spring is disposed in the receiving space of the lock handle, located between the housing frame and one end of the pin; Rotating the lock handle can move the lock cylinder along the spiral channel to open and lock the locking assembly.

8. The display screen according to claim 4, characterized in that: The bottom of the cabinet frame is provided with at least two positioning protrusions, which are configured to cooperate with the display module to support the display screen in an upright position.

9. The display screen according to claim 4, characterized in that: The display module includes: The display module bottom shell has multiple positioning bosses; the supporting surfaces of all the positioning bosses are coplanar. The display module cover plate is fastened and installed on the bottom shell of the display module.

10. The display screen according to claim 4, characterized in that: The display screen also includes: A right-angle connector is provided with a first locking member and a second locking member that are perpendicular to each other; wherein, the first locking member is fixedly connected to one side of one of the box frames, and the second locking member is fixedly connected to one side of another adjacent box frame, so that the two adjacent box frames are arranged perpendicularly.

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