A quick link locking device for LED display screens

Abstract

The application relates to the technical field of LED display screen assembling, and particularly discloses a quick linking and locking device for LED display screen, which comprises an LED display module and a connecting block arranged on the back of the LED display module, the back of the LED display module is symmetrically provided with two grooves, the periphery of the two grooves is provided with the connecting block through welding, the two right-angle sides of the connecting block away from the inner wall of the LED display module are provided with connecting holes, and the two connecting blocks are provided with a connecting assembly. The two telescopic parts and the corresponding connecting parts can be automatically driven to separate or adhere by relying on the telescopic servo electric cylinder in the holding part, so that the distance between the connecting parts is automatically adjusted without manual adjustment; the driving motor in the holding part drives the connecting screw rod to rotate through the driving rod, the bevel gear two and the bevel gear one, and then the connecting slide block drives the connecting rod to be automatically inserted into or drawn out of the connecting hole of the connecting block, so that the whole process does not need to rely on tools such as screwdrivers and wrenches, and the manual operation steps are reduced.

Description

Technical Field

[0001] This invention relates to the field of LED display assembly technology, specifically to a quick-connect locking device for LED displays. Background Technology

[0002] As LED displays develop towards modularity and larger sizes, the demand for "speed," "reliability," and "compatibility" in modular splicing is becoming increasingly urgent in scenarios such as outdoor advertising screens and stage rental screens.

[0003] In existing technologies, most LED display modules are fixed to the frame or adjacent modules using four-corner bolts. This requires the use of screwdrivers, wrenches, and other tools to tighten the bolts point by point, resulting in a single module taking 5-8 minutes to assemble and disassemble. Furthermore, bolts are prone to falling or being lost during high-altitude operations, and bolt connections require manual calibration of the hole positions. When the number of modules exceeds 100, the overall installation time extends to several hours, making it difficult to meet the hourly setup requirements of rental scenarios. In addition, long-term vibration can easily cause bolts to loosen, requiring regular inspection and tightening, leading to high maintenance costs. Moreover, existing push-button clips are mostly designed for a single specification, only compatible with LED display modules of a specific thickness. When splicing modules from different manufacturers or of different thicknesses, the entire set of clips must be replaced, resulting in poor compatibility. Furthermore, the core component of the clip is a metal spring; after more than 500 assemblies and disassemblies, the spring is prone to fatigue deformation, leading to a decrease in locking force and requiring frequent clip replacement, increasing user maintenance costs. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the present invention provides a quick-connect locking device for LED displays to solve the aforementioned technical defects.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a quick-connect locking device for an LED display screen, comprising an LED display module and a connecting block disposed on the back of the LED display module. The back of the LED display module is symmetrically provided with two grooves, and connecting blocks are welded to the four sides of the two grooves. The two right-angled sides of the connecting blocks away from the inner wall of the LED display module are provided with connecting holes, and a connecting component is disposed between the two connecting blocks. The connecting assembly includes a connecting part, a driving part, and a gripping part. A connecting part is provided between the two connecting blocks, and two connecting parts are symmetrically arranged. A driving part is fixedly provided on one side of each of the two connecting parts, and a gripping part is fixedly provided on one side of each of the two driving parts. A connecting rod is slidably provided on both sides of each of the two connecting parts, and one end of each connecting rod is inserted into a connecting hole inside the two connecting blocks. The gripping part consists of two telescopic parts, and a telescopic servo cylinder is fixedly provided inside one of the telescopic parts. The driving end of the telescopic servo cylinder is fixedly connected to one side of the other telescopic part.

[0006] Furthermore, the LED display module has positioning grooves on all four sides inside, and positioning blocks that cooperate with the positioning grooves are provided on both sides of the bottom of the two connecting parts; the LED display module has mounting groove one on all four sides inside, and metal blocks are fixedly installed inside each of the four mounting groove one; the bottom of the connecting part has mounting groove two, and an electromagnet block is fixedly installed inside the mounting groove two.

[0007] Furthermore, drive motors are fixedly installed on both sides inside the gripping part, and one end of the output shaft of each of the two drive motors is fixedly provided with a drive rod through a coupling. One end of each of the two drive rods extends into the interior of the drive part, and one end of each drive rod is rotatably connected to one side of the inner wall of the two drive parts respectively.

[0008] Furthermore, the connecting part is provided with a movable groove inside, and a connecting screw is rotatably provided inside the movable groove. A helical gear one is fixedly provided in the middle of the surface of the connecting screw, and one side of the helical gear one extends into the interior of the driving part. A helical gear two is fixedly provided at the bottom of the surface of the driving rod, and the tooth surface of the helical gear two meshes with the tooth surface of the helical gear one for transmission.

[0009] Furthermore, connecting sliders are slidably arranged on both sides inside the movable groove, and one side of each connecting slider is fixedly connected to one end of each connecting rod; one end of each connecting rod extends to the outside of the connecting part, and the surfaces of both connecting rods slide in contact with the inside of the connecting part.

[0010] Furthermore, both of the connecting sliders are provided with threaded holes that mate with the connecting screws, and one end of each threaded hole extends into the interior of the two connecting rods. Both sides of the surface of the connecting screw are provided with external threads in opposite directions, and both ends of the connecting screw are respectively connected to the internal threads of the two threaded holes.

[0011] Furthermore, locking blocks are slidably arranged around the inside of the LED display module, and two sliding rods are fixedly arranged on one side of the locking blocks. Two connecting springs are fixedly arranged on one side of the locking blocks, and the two connecting springs are respectively sleeved on the surface of the two sliding rods. One end of each of the two connecting springs is fixedly connected to the inner sidewall of the LED display module.

[0012] Furthermore, the outer peripheral surface of the LED display module is provided with a locking buffer groove, and the inside of the locking buffer groove is provided with a locking buffer pad. Sliding holes are provided on both sides of the inside of the locking buffer groove, and one side of each of the two sliding holes penetrates the inside of the locking buffer pad. One end of each of the two sliding rods penetrates the inside of the two sliding holes respectively.

[0013] Furthermore, a locking groove that mates with the locking block is provided on one side of the connecting part, and two limiting posts are fixedly provided on one side of the inner wall of the locking groove. Two limiting holes that mate with the limiting posts are also provided on one side of the locking groove, and a miniature buzzer is provided inside each of the two limiting holes.

[0014] The beneficial effects achieved by the present invention using the above structure are as follows: 1. In this invention, by relying on the telescopic servo cylinder inside the gripping part, the two telescopic parts and their corresponding connecting parts can be automatically driven to separate or fit together, eliminating the need for manual adjustment of the distance between the connecting parts. The drive motor inside the gripping part drives the connecting screw to rotate via the drive rod, helical gear two, and helical gear one, thereby enabling the connecting slider to automatically insert or withdraw the connecting rod into the connecting hole of the connecting block. The entire process requires no screwdrivers, wrenches, or other tools, reducing manual operation steps. Simultaneously, the guiding cooperation between the positioning block at the bottom of the connecting part and the positioning slot of the LED display module, as well as the magnetic pre-fixation between the electromagnet block and the metal block, can replace manual calibration of the hole positions, reducing reliance on operator experience and minimizing manual alignment deviations.

[0015] 2. This invention improves the stability of module connection through a multi-locking structure of magnetic pre-fixation, mechanical locking, and secondary anti-detachment: the magnetic attraction between the electromagnet block and the metal block provides an initial fixing benchmark for the connection part, preventing the connection part from shifting during subsequent connection; the cooperation between the connecting rod and the connecting hole forms a rigid mechanical lock, providing direct connection constraint for adjacent LED display modules; the cooperation between the locking block inside the LED display module and the locking groove of the connection part forms a secondary anti-detachment constraint after the modules are attached, reducing the risk of module loosening; in addition, the connecting block is connected to the LED display module by a dual installation method of welding and bolt fixing, which enhances the connection strength between the connecting block itself and the module, and can adapt to usage scenarios with vibration or impact such as vehicle and outdoor, reducing the probability of module detachment.

[0016] 3. In this invention, the connecting screw surface inside the connecting part is provided with external threads of opposite directions on both sides. The connecting slider can slide along the connecting screw and drive the connecting rod to extend and retract, so that the connecting rod can adapt to the spacing deviation of the connecting holes on different LED display modules. At the same time, the matching structure of the bottom positioning block of the connecting part and the positioning groove of the LED display module can adapt to LED display modules of different thicknesses without replacing the connecting components, avoiding the need to replace the connecting buckle or clamp as a whole due to differences in module specifications, and improving the reusability of the connecting components.

[0017] 4. In this invention, the limiting post in the locking groove of the connecting part cooperates with the limiting hole. When the locking block slides completely into the locking groove, the limiting post inserts into the limiting hole and triggers the miniature buzzer, which can clearly provide feedback on the locking status and avoid uneven force on the module caused by loose locking during manual operation. The locking buffer groove on the outer periphery of the LED display module cooperates with the locking buffer pad inside. When adjacent modules are attached, it can absorb the rigid collision force between modules, reduce damage such as LED beads falling off and PCB board cracking caused by collisions at the module edges, and protect the structural integrity of the module. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the LED display module structure according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the LED display module and connection component structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the connecting part, the gripping part, and the driving part according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the metal block and positioning groove structure according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the connecting rod and sliding rod structure according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the connecting part and connecting rod structure according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the internal structure of the connecting part according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the locking block and sliding rod structure according to an embodiment of the present invention.

[0019] In the diagram, 1. LED display module; 2. Connecting block; 3. Connecting hole; 4. Connecting part; 5. Grip part; 6. Locking buffer groove; 7. Locking buffer pad; 8. Drive part; 9. Electromagnet block; 10. Metal block; 11. Mounting groove one; 12. Positioning groove; 13. Positioning block; 14. Mounting groove two; 15. Movable groove; 16. Connecting screw; 17. Connecting slider; 18. Connecting rod; 19. Helical gear one; 20. Helical gear two; 21. Drive rod; 22. Drive motor; 23. Locking groove; 24. Limiting post; 25. Locking block; 26. Sliding rod; 27. Connecting spring; 28. Sliding hole. Detailed Implementation

[0020] The technical solutions of 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 scope of protection of the present invention.

[0021] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] Example 1 Please see Figures 1 to 8 As shown, a quick-connect locking device for an LED display screen includes: an LED display module 1 and connecting blocks 2 located on the back of the LED display module 1; two grooves are symmetrically arranged on the back of the LED display module 1, and connecting blocks 2 are welded to the four sides of the two grooves; the four connecting blocks 2 can also be fixedly connected to the back of the LED display module 1 by bolts; connecting holes 3 are provided on the two right-angled sides of the connecting blocks 2 away from the inner wall of the LED display module 1, and a connecting assembly is provided between the two connecting blocks 2; the connecting assembly includes a connecting part 4, a driving part 8, and a holding part 5; a connecting part 4 is provided between the two connecting blocks 2, and two connecting parts 4 are symmetrically arranged; a driving part 8 is fixedly arranged on one side of each of the two connecting parts 4, and a holding part 5 is fixedly arranged on one side of each of the two driving parts 8; the two connecting parts 4 are symmetrically arranged about the central axis of the holding part 5, and the two driving parts 8 are respectively located at both ends of one side of the holding part 5; a power supply is also provided inside the holding part 5.

[0023] Furthermore, connecting rods 18 are slidably provided on both sides of the two connecting parts 4, and one end of the two connecting rods 18 is inserted into the connecting holes 3 inside the two connecting blocks 2 respectively; positioning grooves 12 are provided around the inside of the LED display module 1, and positioning blocks 13 that cooperate with the positioning grooves 12 are provided on both sides of the bottom of the two connecting parts 4; mounting grooves 11 are provided around the inside of the LED display module 1, and metal blocks 10 are fixedly installed inside the four mounting grooves 11; mounting grooves 14 are provided at the bottom of the connecting part 4, and electromagnet blocks 9 are fixedly installed inside the mounting grooves 14.

[0024] Furthermore, the gripping part 5 consists of two telescopic parts, and a telescopic servo cylinder is fixedly installed inside one of the telescopic parts. The drive end of the telescopic servo cylinder is fixedly connected to one side of the other telescopic part. The two telescopic parts are controlled to separate and fit together by the drive end of the telescopic servo cylinder. When performing a quick connection and locking operation between two LED display modules 1, the two telescopic parts of the gripping part 5 are first separated by controlling the two connecting parts 4 to connect with the connecting parts on the back of the two LED display modules 1. Then, the two telescopic parts of the gripping part 5 are controlled to fit together and move closer to achieve a quick connection and locking between the two adjacent LED display modules 1.

[0025] It should be noted that when connecting and locking several LED display modules 1, the two positioning blocks 13 at the bottom of the connecting part 4 are inserted into the positioning slots 12 inside the two LED display modules 1 respectively. This, combined with the electromagnet block 9 at the bottom of the connecting part 4 and the metal block 10 inside the LED display module 1, allows for an adsorption connection, achieving a quick connection between the connecting part 4 and the LED display module 1. At this time, the connecting rods 18 on both sides of the two connecting parts 4 are inserted into the connecting holes 3 inside the two connecting blocks 2 respectively, connecting the connecting rods 18 inside the two connecting parts 4 to the back of the two LED display modules 1 respectively. Finally, the two telescopic parts in the holding part 5 are brought closer together, and the two telescopic parts, together with the two driving parts 8, drive the two connecting parts 4 to move closer together, thereby controlling the quick connection and locking between the two adjacent LED display modules 1. The connection between the connecting rods 18 on both sides of the two connecting parts 4 and the connecting holes 3 inside the connecting blocks 2 ensures the stability of the connection and locking between the two adjacent LED display modules 1.

[0026] Specifically, drive motors 22 are fixedly installed on both sides inside the gripping part 5, and drive rods 21 are fixedly installed at one end of the output shaft of each of the two drive motors 22 through a coupling. One end of each drive rod 21 extends into the interior of the drive part 8, and one end of each drive rod 21 is rotatably connected to one side of the inner wall of the two drive parts 8 respectively. A movable groove 15 is provided inside the connecting part 4, and a connecting screw 16 is rotatably installed inside the movable groove 15. A helical gear 19 is fixedly installed in the middle of the surface of the connecting screw 16, and one side of the helical gear 19 extends into the interior of the drive part 8. A helical gear 20 is fixedly installed at the bottom of the surface of the drive rod 21, and the tooth surface of the helical gear 20 meshes with the tooth surface of the helical gear 19 for transmission.

[0027] Furthermore, connecting sliders 17 are slidably arranged on both sides inside the movable groove 15, and one side of each connecting slider 17 is fixedly connected to one end of each connecting rod 18; one end of each connecting rod 18 extends to the outside of the connecting part 4, and the surfaces of each connecting rod 18 slide in contact with the inside of the connecting part 4; each connecting slider 17 has a threaded hole that mates with the connecting screw 16, and one end of each threaded hole extends into the inside of each connecting rod 18; both sides of the surface of the connecting screw 16 have external threads with opposite directions, and both ends of the connecting screw 16 are respectively connected to the internal threads of the two threaded holes.

[0028] It should be noted that when connecting the connecting rod 18 inside the two connecting parts 4 and the connecting hole 3 inside the connecting block 2, the connection is first established by the positioning block 13 and the positioning groove 12 at the bottom of the connecting part 4. At this time, the drive rod 21 inside the drive part 8 is rotated by the output shaft of the drive motor 22 on one side of the gripping part 5. The meshing transmission between the helical gear 20 and the helical gear 19 at the bottom of the drive rod 21 causes the connecting screw 16 to rotate synchronously with the rotation of the drive rod 21. When controlling the connecting screw 16 to rotate clockwise, the connecting screw... The threaded engagement between the two ends of the connecting screw 16 and the two connecting sliders 17 allows the two connecting sliders 17 to slide relative to each other inside the movable groove 15. Conversely, when the connecting screw 16 is rotated counterclockwise, the two connecting sliders 17 slide away from each other inside the movable groove 15, thereby allowing the connecting rods 18 on both sides to be inserted into the connecting holes 3 inside the two connecting blocks 2, realizing a quick connection between the connecting part 4 and the LED display module 1; and cooperating with the two telescopic parts in the gripping part 5 to achieve a quick connection and locking operation between the two LED display modules 1.

[0029] Specifically, locking blocks 25 are slidably arranged around the inside of the LED display module 1, and two sliding rods 26 are fixedly arranged on one side of the locking blocks 25. Two connecting springs 27 are fixedly arranged on one side of the locking blocks 25, and the two connecting springs 27 are respectively sleeved on the surface of the two sliding rods 26. One end of the two connecting springs 27 is fixedly connected to the inner side wall of the LED display module 1. A locking buffer groove 6 is provided on the outer peripheral surface of the LED display module 1, and a locking buffer pad 7 is provided inside the locking buffer groove 6. Sliding holes 28 are provided on both sides inside the locking buffer groove 6, and one side of the two sliding holes 28 penetrates the interior of the locking buffer pad 7. One end of the two sliding rods 26 respectively penetrates the interior of the two sliding holes 28.

[0030] Furthermore, a locking groove 23 that mates with the locking block 25 is provided on one side of the connecting part 4, and two limiting posts 24 are fixedly provided on one side of the inner wall of the locking groove 23. Two limiting holes that mate with the limiting posts 24 are also provided on one side of the locking groove 23, and a miniature buzzer is provided inside each of the two limiting holes. When the locking block 25 slides into the interior of the locking groove 23 and one end of the limiting post 24 is fully inserted into the interior of the limiting hole, the miniature buzzer emits a warning sound.

[0031] It should be noted that when connecting and locking two adjacent LED display modules 1, after connecting the two connecting parts 4 and the connecting holes 3 inside the connecting block 2, the two telescopic parts in the gripping part 5 are brought close together to connect and lock the two LED display modules 1. After the two LED display modules 1 are close together, the two sides of the locking buffer pad 7 are respectively in the locking buffer groove 6 on one side of the two LED display modules 1. At the same time, one end of the sliding rod 26 inside the two LED display modules 1 abuts against each other, thereby pushing one end of the sliding rod 26 towards one side of the connecting part 4. The sliding rod 26 pushes the locking block 25 into the interior of the locking groove 23 until one end of the limiting post 24 is fully inserted into the interior of the limiting hole. Then, the miniature buzzer sounds a prompt, completing the quick connection and locking between the two LED display modules 1. At this time, the locking buffer pad 7 is used to lock and buffer the two adjacent LED display modules 1 to prevent deformation of the rigid contact between the two LED display modules 1.

[0032] It should be further explained that this embodiment discloses a working method of an LED display screen quick-connect locking device, including the following steps: The telescopic servo cylinder inside the gripping part 5 is activated to control its drive end to extend, causing the two telescopic parts of the gripping part 5 to separate. Since the two telescopic parts are fixedly connected to the two drive parts 8 respectively, and the two drive parts 8 are correspondingly connected to the two connecting parts 4, the two connecting parts 4 expand synchronously as the telescopic parts separate, until the distance between the two connecting parts 4 matches the distance between the areas to be connected on the back of the two LED display modules 1.

[0033] Positioning blocks and positioning slots are aligned: The connecting components are moved manually or mechanically to align the positioning blocks 13 on both sides of the bottom of the two connecting parts 4 with the positioning slots 12 around the inside of the two LED display modules 1, and the positioning blocks 13 are fully inserted into the positioning slots 12 to achieve the initial positioning of the connecting parts 4 and the LED display modules 1, so as to avoid the subsequent misalignment of the connecting holes 3 and the connecting rods 18.

[0034] Electromagnetic block magnetic reinforcement: The electromagnet 9 in the mounting groove 14 at the bottom of the connecting part 4 is energized, so that the electromagnet 9 generates magnetism; Since the metal block 10 is fixed in the mounting groove 11 of the LED display module 1, the electromagnet 9 and the metal block 10 generate a magnetic attraction force, which tightly attracts the connecting part 4 to the back of the LED display module 1, completing the pre-fixation of the connecting part 4 and providing a stable reference for subsequent mechanical connection.

[0035] Drive motor start-up and power transmission: Start the drive motors 22 on both sides inside the grip 5 and control the output shaft of the drive motor 22 to rotate clockwise; the output shaft of the drive motor 22 drives the drive rod 21 to rotate synchronously through the coupling. The drive rod 21 extends into the drive part 8, and the helical gear 20 at the bottom of its surface meshes with the helical gear 19 in the middle of the connecting screw 16 in the movable groove 15 of the connecting part 4. Therefore, the helical gear 20 drives the helical gear 19 and the connecting screw 16 to rotate synchronously.

[0036] Connecting rods are inserted into connecting holes: Because the connecting screw 16 has external threads with opposite directions on both sides of its surface, and the connecting sliders 17 on both sides of the movable groove 15 have threaded holes that mate with the connecting screw 16, when the connecting screw 16 rotates clockwise, the two connecting sliders 17 slide relative to each other along the movable groove 15 and move closer to each other; and because one side of the connecting slider 17 is fixedly connected to the connecting rod 18, the connecting rod 18 slides outward from the connecting part 4 along with the connecting slider 17 until one end of each of the two connecting rods 18 is completely inserted into the connecting hole 3 of the connecting block 2 on the back of the LED display module 1, thereby achieving mechanical locking between the connecting part 4 and the connecting block 2.

[0037] Grip section drive module fitting: Control the telescopic servo cylinder inside the grip section 5 to retract its drive end, causing the two telescopic parts of the grip section 5 to fit together and approach each other; the two telescopic parts respectively drive the two connecting parts 4 to approach synchronously through the drive section 8. Since the connecting parts 4 are fixed to the LED display module 1, the two LED display modules 1 gradually fit together as the connecting parts 4 approach, until the distance between the outer peripheral surfaces of the two modules is ≤0.1mm.

[0038] Locking block and locking groove engagement: During the bonding process of the two LED display modules 1, one end of the sliding rod 26 around its interior abuts against each other. As the modules continue to approach, the sliding rod 26 is squeezed and slides into the LED display module 1. At the same time, the connecting spring 27 sleeved on the surface of the sliding rod 26 is compressed and deformed to generate a restoring force. The sliding rod 26 drives the locking block 25 fixed on one side to extend synchronously until the locking block 25 slides completely into the locking groove 23 on one side of the connecting part 4.

[0039] Buffer pad and buffer groove fit: When the two LED display modules 1 are fully attached, the locking buffer pad 7 in the locking buffer groove 6 on the outer periphery of the LED display module 1 is embedded in the locking buffer groove 6 of the two adjacent LED display modules 1 on both sides. The elastic deformation of the locking buffer pad 7 absorbs the rigid impact force when the two modules are attached, so as to avoid the LED display module 1 from being deformed by the frame or damaged by the internal components due to rigid contact.

[0040] Limiting post triggers buzzer prompt: After the locking block 25 is fully slid into the locking groove 23, the two limiting posts 24 on one side of the inner wall of the locking groove 23 are gradually inserted into the limiting holes on one side of the locking groove 23 as the connecting part 4 and the LED display module 1 are attached; when the limiting post 24 is fully inserted into the limiting hole, the miniature buzzer in the limiting hole is triggered and emits a 1kHz prompt sound for 2 seconds, indicating that the two adjacent LED display modules 1 have been connected and locked.

[0041] Device power failure and status maintenance: After the miniature buzzer sounds, the power of the electromagnet block 9 is turned off and the magnetic attraction disappears, avoiding the device from overheating due to prolonged power supply. At the same time, the power source of the drive motor 22 and the telescopic servo cylinder is turned off. At this time, the connecting rod 18 is still inserted in the connecting hole 3, the locking block 25 is locked in the locking groove 23, and the restoring force of the connecting spring 27 can maintain the locking state of the locking block 25, ensuring a stable connection between the two modules and completing a single quick connection locking operation.

[0042] If it is necessary to disassemble the adjacent LED display module 1, follow the reverse procedure below: Start the drive motor 22 and control its output shaft to rotate counterclockwise. This will drive the connecting screw 16 to rotate counterclockwise through the second helical gear 20 and the first helical gear 19, causing the connecting slider 17 to slide away from each other, and the connecting rod 18 to be pulled out of the connecting hole 3. Start the telescopic servo cylinder to separate the two telescopic parts of the gripping part 5, thereby separating the connecting part 4 from the LED display module 1, and the positioning block 13 to be dislodged from the positioning groove 12. Manually remove the connecting components to complete the module disassembly.

[0043] In summary, the present invention utilizes a telescopic servo cylinder inside the gripping part 5 to automatically drive the two telescopic parts and their corresponding connecting parts 4 to separate or fit together, eliminating the need for manual adjustment of the spacing between the connecting parts 4. Furthermore, the drive motor 22 inside the gripping part 5 drives the connecting screw 16 to rotate via the drive rod 21, helical gear 20, and helical gear 19, thereby enabling the connecting slider 17 to automatically insert or withdraw the connecting rod 18 into or out of the connecting hole 3 of the connecting block 2. This process eliminates the need for screwdrivers, wrenches, or other tools, reducing manual operation steps. Simultaneously, the guiding engagement between the bottom positioning block 13 of the connecting part 4 and the positioning groove 12 of the LED display module 1, as well as the magnetic pre-fixation between the electromagnet block 9 and the metal block 10, can replace manual calibration. The hole positions reduce reliance on operator experience and minimize manual alignment errors. A multi-locking structure—magnetic pre-fixation, mechanical locking, and secondary anti-detachment—enhances module connection stability: the magnetic attraction between the electromagnet block 9 and the metal block 10 provides an initial fixing reference for the connecting part 4, preventing displacement during subsequent connection; the connection rod 18 and the connecting hole 3 form a rigid mechanical lock, providing direct connection constraints for adjacent LED display modules 1; the locking block 25 inside the LED display module 1 and the locking groove 23 of the connecting part 4 form a secondary anti-detachment constraint after module bonding, reducing the risk of module loosening; furthermore, the connecting block 2 uses a dual installation method of welding and bolt fixing to connect to the LED display module 1. The connection between the connecting block 2 and the module is enhanced, making it suitable for use in environments with vibration or impact, such as vehicles and outdoors, and reducing the probability of module detachment. The connecting screw 16 inside the connecting part 4 has opposite external threads on both sides, allowing the connecting slider 17 to slide along the connecting screw 16 and extend / retract the connecting rod 18, enabling the connecting rod 18 to accommodate the spacing deviations of the connecting holes 3 on different LED display modules 1. Simultaneously, the mating structure between the bottom positioning block 13 of the connecting part 4 and the positioning groove 12 of the LED display module 1 allows for adaptation to LED display modules 1 of different thicknesses without replacing the connecting components, avoiding the need to replace the entire connecting clip or clamp due to differences in module specifications, thus improving the reusability of the connecting components. The connecting part 4 also features a locking groove. The limiting post 24 inside the locking slot 23 cooperates with the limiting hole. When the locking block 25 is fully slid into the locking slot 23, the limiting post 24 inserts into the limiting hole and triggers the miniature buzzer, which can clearly give feedback on the locking status and avoid uneven force on the module caused by loose locking during manual operation. The locking buffer groove 6 on the outer periphery of the LED display module 1 cooperates with the locking buffer pad 7 inside. When adjacent modules are attached, it can absorb the rigid collision force between modules, reduce damage such as LED beads falling off and PCB board cracking caused by collisions at the edge of the modules, and protect the integrity of the module structure. The connecting component adopts a modular design of grip part 5 + drive part 8 + connecting part 4. When a certain component is damaged, the corresponding component can be disassembled and replaced separately without scrapping the entire connecting component.When disassembling the module, simply reverse the start of the drive motor 22 to pull the connecting rod 18 out of the connecting hole 3, and then control the telescopic servo cylinder to separate the connecting part. This completes the disassembly without complicated disassembly steps, reducing the technical threshold and workload of maintenance operations. The electromagnet block 9 is only energized during the pre-positioning stage of the connecting part 4, and is de-energized after the connecting rod 18 and the connecting hole 3 are engaged, avoiding continuous energy consumption and component overheating caused by long-term energization of the electromagnet. The drive motor 22 and the telescopic servo cylinder only operate during module assembly and disassembly, remaining idle during normal module use. This reduces ineffective energy consumption and mechanical wear of the motor and cylinder caused by long-term operation, extending the service life of core components.

[0044] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0047] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A quick-connect locking device for an LED display screen, comprising an LED display module (1) and a connecting block (2) disposed on the back of the LED display module (1), characterized in that, The LED display module (1) has two grooves symmetrically arranged on its back side, and connecting blocks (2) are welded around the inside of the two grooves. Connecting holes (3) are provided on the two right-angled sides of the connecting blocks (2) away from the inner wall of the LED display module (1), and a connecting component is provided between the two connecting blocks (2). The connecting assembly includes a connecting part (4), a driving part (8), and a gripping part (5). A connecting part (4) is provided between the two connecting blocks (2), and two connecting parts (4) are symmetrically arranged. A driving part (8) is fixedly provided on one side of each of the two connecting parts (4), and a gripping part (5) is fixedly provided on one side of each of the two driving parts (8). A connecting rod (18) is slidably provided on both sides of each of the two connecting parts (4), and one end of each connecting rod (18) is inserted into a connecting hole (3) inside the two connecting blocks (2). The gripping part (5) is composed of two telescopic parts, and a telescopic servo cylinder is fixedly provided inside one of the telescopic parts. The driving end of the telescopic servo cylinder is fixedly connected to one side of the other telescopic part. The LED display module (1) is provided with positioning grooves (12) on all four sides inside, and positioning blocks (13) that cooperate with positioning grooves (12) are provided on both sides of the bottom of the two connecting parts (4); the LED display module (1) is provided with mounting groove one (11) on all four sides inside, and metal blocks (10) are fixedly installed inside the four mounting grooves one (11); the bottom of the connecting part (4) is provided with mounting groove two (14), and electromagnet blocks (9) are fixedly installed inside the mounting groove two (14); locking blocks (25) are slidably provided on all four sides inside the LED display module (1), and two sliding rods (26) are fixedly provided on one side of the locking block (25). Two connecting springs (27) are fixedly provided on one side of the locking block (25), and the two connecting springs (27) are respectively sleeved on the surface of the two sliding rods (26). One end of the two connecting springs (27) is fixedly connected to the inner wall of the LED display module (1).

2. The LED display screen quick-connect locking device according to claim 1, characterized in that, Both sides of the grip (5) are fixedly provided with drive motors (22), and one end of the output shaft of each of the two drive motors (22) is fixedly provided with a drive rod (21) through a coupling. One end of each of the two drive rods (21) extends into the interior of the drive part (8), and one end of each drive rod (21) is rotatably connected to one side of the inner wall of the two drive parts (8).

3. The LED display screen quick-connect locking device according to claim 2, characterized in that, The connecting part (4) is provided with a movable groove (15), and a connecting screw (16) is rotatably provided inside the movable groove (15). A helical gear (19) is fixedly provided in the middle of the surface of the connecting screw (16), and one side of the helical gear (19) extends into the interior of the driving part (8). A helical gear (20) is fixedly provided at the bottom of the surface of the driving rod (21), and the tooth surface of the helical gear (20) meshes with the tooth surface of the helical gear (19) for transmission.

4. The LED display screen quick-connect locking device according to claim 3, characterized in that, Both sides of the movable groove (15) are slidably provided with connecting sliders (17), and one side of each of the two connecting sliders (17) is fixedly connected to one end of each of the two connecting rods (18); one end of each of the two connecting rods (18) extends to the outside of the connecting part (4), and the surfaces of the two connecting rods (18) are in sliding contact with the inside of the connecting part (4).

5. The LED display screen quick-connect locking device according to claim 4, characterized in that, Both of the connecting sliders (17) are provided with threaded holes that cooperate with the connecting screw (16), and one end of each threaded hole extends into the interior of the two connecting rods (18). Both sides of the surface of the connecting screw (16) are provided with external threads in opposite directions, and both ends of the connecting screw (16) are respectively connected to the internal threads of the two threaded holes.

6. The LED display screen quick-connect locking device according to claim 1, characterized in that, The outer peripheral surface of the LED display module (1) is provided with a locking buffer groove (6), and the inside of the locking buffer groove (6) is provided with a locking buffer pad (7). Sliding holes (28) are provided on both sides inside the locking buffer groove (6), and one side of each of the two sliding holes (28) penetrates the inside of the locking buffer pad (7). One end of each of the two sliding rods (26) penetrates the inside of the two sliding holes (28).

7. The LED display screen quick-connect locking device according to claim 1, characterized in that, The connecting part (4) is provided with a locking groove (23) that cooperates with the locking block (25) on one side, and two limiting posts (24) are fixedly provided on one side of the inner wall of the locking groove (23). Two limiting holes that cooperate with the limiting posts (24) are also provided on one side of the locking groove (23), and a miniature buzzer is provided inside the two limiting holes.

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