A mortise and tenon structure magic cube LED screen structure

Abstract

The application discloses a mortise and tenon structure magic cube LED screen structure and relates to the technical field of LED display screens, which comprises a frame and a bottom plate, three LED display screen bodies are arranged on the upper end of the frame, rubber strips are arranged on the two sides of the middle LED display screen body, the tenon heads of the four corners of the bottom end of the LED display screen body are correspondingly inserted into the mortise eyes arranged on the upper surface of the dovetail blocks, and the initial fixation is realized; when splicing, the rubber strips arranged on the two sides of the middle LED display screen body play the sealing and buffering roles when the two side display screens are close to each other; then, the lock blocks on the long rod are inserted into the lock holes arranged on the tenon head surface of the LED display screen body from the through holes and mortise eyes arranged on the inner walls of the two sides of the frame by rotating the threaded rod to drive a series of components to move, the simultaneous locking of the three LED display screen bodies is realized, the firmness and stability of the display screen connection are comprehensively ensured, and the loosening and displacement of the display screen do not occur in the use process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of LED display screens, and in particular to a mortise-tenon structure magic cube LED screen structure. BACKGROUND

[0002] With the rapid development of LED display technology, LED display screens are increasingly widely used in various fields, especially in advertising, stages, stadiums, conferences and other scenarios, and LED display screens have become the mainstream display equipment due to their high brightness, high definition, long service life and other advantages.

[0003] The current LED screen structure has at least the following technical problems:

[0004] First, the traditional LED display screen is usually fixed by bolts or simple buckle structures during installation, which can achieve the fixation of the display screen, but in the actual installation process, the following problems often exist:

[0005] 1. High installation precision requirement: since the splicing between the display screens needs to be very accurate, any deviation may cause the display screens to be unable to completely align, affecting the display effect;

[0006] 2. Complex operation: multiple people need to cooperate during installation, and tools need to be used for fixation, which is time-consuming and labor-intensive;

[0007] 3. Easy to damage: during installation, the display screens are prone to collision, causing damage to the surface or internal components of the display screens.

[0008] Second, the traditional LED screen structure usually uses fans or heat sinks for heat dissipation, but in actual application, the dust is easy to accumulate on the heat dissipation fan, affecting the heat dissipation efficiency, and the heat sink is easy to be damaged by collision and damage during transportation and installation, resulting in a decrease in heat dissipation performance, and to solve the above problems, an LED display screen structure is proposed, which adopts a mortise-tenon structure magic cube modular design and can be flexibly assembled and disassembled. SUMMARY

[0009] Technical problems solved

[0010] In view of the deficiencies of the prior art, the present application provides a mortise-tenon structure magic cube LED screen structure to solve the above technical problems.

[0011] Technical scheme

[0012] To achieve the above purpose, the present application is realized by the following technical scheme:

[0013] The mortise and tenon structure magic cube LED screen structure, including frame and bottom plate, the upper end of the frame is installed with three LED display screen main body, the LED display screen main body is provided with rubber strip on both sides of the middle part, the plug is connected to each LED display screen main body, the tenon is fixedly connected to the four corners of the bottom end of each LED display screen main body, the surface of each tenon is provided with a lock hole, the bottom plate is installed at the bottom of the frame, the circuit board is provided on the bottom plate, the socket is provided on the circuit board, the surface of the frame is provided with dovetail groove on both sides, the dovetail block is provided in each dovetail groove, the dovetail block is fixedly installed in the dovetail groove, the dovetail block is slidingly installed in the dovetail groove, the docking assembly is provided on both sides of the frame, the sliding rod is fixedly connected to the sliding dovetail block on both sides of the sliding rod, the sliding rod is used to push the LED display screen main body on both sides to the middle, the connecting piece is fixedly connected to the sliding rod, the straight rod is fixedly connected to the connecting piece, the locking assembly is provided in the frame for locking the LED display screen main body, the locking assembly includes push rod, long rod and cross rod, six lock blocks are fixedly installed on the two ends of the long rod, the lock block is movably inserted into the dovetail block and the lock hole, and the LED display screen main body is locked.

[0014] Preferably: the two docking assemblies are distributed along the length direction of the frame, the bottom end of the sliding rod is fixedly installed with a horizontal plate, the horizontal plate is movably penetrated with two round rods, the round rod is fixedly connected to the inner wall of the frame, the end of the round rod is fixedly connected with a round block, the spring is movably sleeved on the round rod, and the horizontal plate is fixedly connected with the two round blocks through the two springs.

[0015] Preferably: the inner wall of the frame is provided with a group of through holes on both sides, the sliding rod is movably penetrated through the through hole, and the inner wall of the frame is provided with six through holes on both sides.

[0016] Preferably: the two ends of the push rod are fixedly installed with a push piece, the surface of the push piece is matched with the surface of the sliding rod, and the matched surfaces are designed as inclined surfaces, so as to push the two sliding rods to move close to each other, the threaded rod is penetrated and threadedly connected with the push rod, the threaded rod is rotatably installed on the frame, the free end of the threaded rod is fixedly connected with a torsion block, two limiting rods are fixedly installed in the frame, the push rod and the two long rods are movably penetrated through the two limiting rods, and the frame is provided with a mounting plate on both ends.

[0017] Preferably, the horizontal rod is fixedly installed in the frame, a rotating shaft is rotatably installed on the horizontal rod, gear two and gear one are fixedly installed at two ends of the rotating shaft respectively, a rack two is slidably installed at the upper end of the horizontal rod, the gear one is engaged with the rack two, a sliding groove one is formed in the surface of the horizontal rod, a sliding block and a contact block are fixedly connected to the bottom end and the upper end of the rack two respectively, the sliding block is slidably installed in the sliding groove one, a round rod two is fixedly connected in the sliding groove one, the round rod two movably penetrates through the sliding block, a spring two is movably sleeved on the round rod two, the sliding block is fixedly connected with the inner wall of the sliding groove one through the spring two, a gap exists between the contact block and the push rod, the contact block is used for contacting after the push rod moves, and the threaded rod movably penetrates through the two long rods.

[0018] Preferably, the two long rods are fixedly connected with the rack one at opposite ends respectively, a height difference exists between the two rack ones, the gear two is engaged with the two rack ones, and the surface of each long rod is provided with an avoiding hole.

[0019] Preferably, two round holes are formed in the bottom surface of the bottom plate, a heat dissipation fan is arranged in each round hole, a heat dissipation plate is embedded on the bottom plate, a group of heat dissipation fins are fixedly installed at the upper and lower ends of the heat dissipation plate, a protective cover for protecting the bottom heat dissipation fins is slidably installed at the back end of the bottom plate, and a dust screen is embedded in the bottom surface of the protective cover.

[0020] Preferably, dovetail strips are fixedly installed at the two sides of the upper end of the protective cover, sliding grooves two are formed in the two sides of the bottom surface of the bottom plate, each dovetail strip is slidably installed in the sliding groove two, a connecting rod is fixedly installed at the upper end of the dovetail strip, and the connecting rod is fixedly connected with the push rod.

[0021] Preferably, blocking strips are fixedly installed at the two sides of the end of the protective cover, the two blocking strips are attached to the bottom surface of the bottom plate, one end of the protective cover is designed as an opening, and baffle plates one and two are fixedly installed at the bottom end of the bottom plate and are located at the two sides of the bottom heat dissipation fins respectively.

[0022] Preferably, the protective cover and the baffle plate two form a first surrounding structure to protect the bottom heat dissipation fins, and the protective cover is slid to one side to form a second surrounding structure with the baffle plate one to block the two round holes. Beneficial effects

[0023] One: during installation, the tenon heads of the four corners of the LED display main body bottom are inserted into the mortises on the upper surface of the dovetail blocks, achieving preliminary fixation. When splicing, the rubber strips on both sides of the middle LED display main body play a sealing and buffering role when the two display screens are close to each other. Then, by twisting the threaded rod, a series of components are moved, and the lock blocks on the long rod are inserted into the lock holes on the surface of the tenon heads of the LED display main body, achieving simultaneous locking of the three LED display main bodies, fully ensuring the firmness and stability of the display screen connection, and ensuring that there is no loosening or displacement during use.

[0024] Two: the special layout of the dovetail blocks in the dovetail grooves on both sides of the upper surface of the frame leaves a certain gap between the sliding dovetail blocks on both sides and the fixed dovetail blocks in the middle. This allows the three LED display main bodies to maintain a proper spacing during installation, effectively avoiding the collision between the display screens due to slight installation angle deviation or careless operation during installation, which may cause damage to the LED display main body. This greatly reduces the risk and lays a safe and reliable foundation for subsequent smooth splicing to form a complete LED display screen. At the same time, it also learns from the characteristics of the Rubik's Cube components, which are relatively independent and can be combined, improving the convenience and rationality of installation.

[0025] Three: the operator only needs to twist the threaded rod. Since the threaded rod and the push rod are in a threaded connection, the rotation of the threaded rod will drive the push rod to move along the width direction of the frame. The pushers fixedly installed at both ends of the push rod move accordingly. By using the inclined surface design of the abutting surface of the pusher and the connecting piece, when the pusher moves, it will simultaneously apply force to the two connecting pieces, prompting the two sliding rods fixedly connected to the connecting pieces to move closer to each other, thereby driving the LED display main bodies on both sides to move closer to the middle LED display main body, automatically completing the docking process. When the pusher moves to completely misalign with the connecting piece, i.e., abuts against the surface of the flat rod, the LED display main bodies on both sides have completely sealed and abutted against the middle LED display main body. At this time, continue to twist the threaded rod, and the sliding rod will remain in the current position, maintaining the stable state after docking. The entire docking process does not require excessive manual intervention, and the operation is simple and efficient.

[0026] Four: in the initial state, the protective cover and the baffle form a first surrounding structure, which tightly protects the heat dissipation fins at the bottom of the heat sink, effectively avoiding damage such as collision and scratching of the bottom heat dissipation fins during the early stage of transportation, installation and the like, ensuring the integrity of the heat dissipation assembly and guaranteeing the normal play of the subsequent heat dissipation function. When the LED display screen body is locked, the push rod moves under the driving of the threaded rod, the protective cover slides in the two grooves formed on the bottom surface of the bottom plate, the heat dissipation fins at the bottom are exposed to the air, creating favorable conditions for heat dissipation when the LED display screen is working, ensuring that the heat generated during the operation of the LED display screen can be dissipated in time, maintaining good working performance. At the same time, the protective cover slides to the lower side of the two heat dissipation fans, forming a second surrounding structure with the baffle, shielding the two circular holes (the positions of the heat dissipation fans) on the bottom plate. The dust screen embedded in the bottom surface of the protective cover can effectively prevent dust from entering the interior through the heat dissipation fans. The shielding strips fixedly installed on both sides of the end of the protective cover are in close contact with the bottom surface of the bottom plate, shielding the grooves, further preventing dust from entering, ensuring the cleanliness of the interior of the equipment and ensuring the normal operation of the heat dissipation fans and the stable operation of the entire LED screen structure.

[0027] Five: when the LED display screen body needs to be disassembled, the operator twists the threaded rod to make it reverse, the rotation of the threaded rod makes the push rod and the two pushers move in the opposite direction. At this time, the elastic reset action of the second spring is used, the second rack is reset to the initial state on the cross rod, the gear transmission is used, the lock block on the long rod is withdrawn from the lock hole, the locking of the LED display screen body is released. After the locking is released, the elastic reset action of the spring one on the round rod one is used, the cross plate drives the slide rod to return to the initial position, the butt joint assemblies on both sides return to the initial state, the dovetail blocks on both sides move away from each other in the dovetail grooves, thereby driving the LED display screen bodies on both sides to move away from each other. Due to the initial design of the structural relationship, a certain gap still exists between the adjacent LED display screen bodies during the entire disassembly process, which facilitates the workers to pull out the plug from the socket, and then smoothly take down the LED display screen body. The entire disassembly process is orderly and very convenient, greatly improving the efficiency of maintaining and replacing the display screen. BRIEF DESCRIPTION OF DRAWINGS

[0028] The above description is only a summary of the technical scheme of the present application. In order to more clearly understand the technical means of the present application and can be implemented according to the content of the specification, the following will be described in detail with the preferred embodiments of the present application and with the drawings.

[0029] Figure 1 It is the overall structure diagram of the mortise and tenon structure magic cube LED screen structure of the present application;

[0030] Figure 2 It is the structure diagram of the mounting plate of the present application;

[0031] Figure 3 is a structural diagram of the frame of the present application;

[0032] Figure 4 is a structural diagram of the slide bar of the present application;

[0033] Figure 5 is a structural diagram of the long bar of the present application;

[0034] Figure 6 is a structural diagram of the docking assembly of the present application;

[0035] Figure 7 is a structural diagram of the bottom plate of the present application;

[0036] Figure 8 is a structural diagram of the protective cover of the present application;

[0037] Figure 9 is a structural diagram of the cross bar of the present application;

[0038] Figure 10 is a structural diagram of the push bar of the present application;

[0039] Figure 11 is a structural diagram of the dovetail block of the present application.

[0040] Legend: 1, frame; 11, dovetail groove; 12, through opening; 13, through hole; 14, limiting rod; 15, mounting plate; 2, bottom plate; 21, circuit board; 22, socket; 23, heat dissipation plate; 24, heat dissipation fin; 25, heat dissipation fan; 26, baffle one; 27, baffle two; 3, LED display screen main body; 31, tenon; 32, lock hole; 33, plug; 4, dovetail block; 41, mortise; 5, docking assembly; 51, slide bar; 52, connecting piece; 53, straight bar; 54, round rod one; 55, round block; 56, spring one; 57, cross plate; 6, push bar; 61, pushing piece; 62, threaded rod; 7, long bar; 71, lock block; 72, rack one; 73, avoidance hole; 8, cross bar; 81, rotating shaft; 82, gear one; 83, gear two; 84, rack two; 85, contact block; 86, sliding block; 87, round rod two; 88, spring two; 9, protective cover; 91, dovetail strip; 92, connecting rod; 93, sliding groove two; 94, shielding strip. DETAILED DESCRIPTION

[0041] The embodiments of the present application will be further described below in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0042] Example: as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 ,Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11As shown, in order to solve the problems in the prior art, the mortise and tenon structure magic cube LED screen structure is provided, which comprises a frame 1 and a bottom plate 2, the upper end of the frame 1 is provided with three LED display screen bodies 3, rubber strips are arranged on the two sides of the LED display screen body 3 located in the middle, each LED display screen body 3 is connected with a plug 33, the four corners of the bottom end of each LED display screen body 3 are fixedly connected with tenons 31, the surface of each tenon 31 is provided with a lock hole 32, the bottom plate 2 is installed at the bottom of the frame 1, the bottom plate 2 is provided with a circuit board 21, the circuit board 21 is provided with a socket 22 matched with the plug 33, the upper surface of the frame 1 is provided with dovetail grooves 11 on the two sides, each dovetail groove 11 is provided with three dovetail blocks 4, the upper surface of each dovetail block 4 is provided with a mortise hole 41 matched with the tenon 31, the dovetail block 4 located in the middle is fixedly installed in the dovetail groove 11, the dovetail blocks 4 located on the two sides are slidingly installed in the dovetail groove 11, the two sides of the inner cavity of the frame 1 are provided with docking assemblies 5, the docking assembly 5 comprises a sliding rod 51, the two ends of the sliding rod 51 are fixedly connected with the sliding dovetail blocks 4 in the two dovetail grooves 11, and the sliding rod 51 is used for pushing the LED display screen bodies 3 on the two sides to be close to the middle, the sliding rod 51 is fixedly connected with a connecting piece 52, the connecting piece 52 is fixedly connected with a straight rod 53, the frame 1 is provided with a locking assembly used for locking the LED display screen body 3, the locking assembly comprises a push rod 6, two long rods 7 and a cross rod 8, the two ends of the two long rods 7 away from each other are fixedly installed with six lock blocks 71, each lock block 71 is movably penetrated through the dovetail block 4 and inserted into the lock hole 32, and the lock blocks 71 are used for locking the LED display screen body 3, the two docking assemblies 5 are distributed along the length direction of the frame 1, the bottom end of the sliding rod 51 is fixedly installed with a horizontal plate 57, two round rods one 54 are movably penetrated through the horizontal plate 57, each round rod one 54 is fixedly connected with the inner wall of the frame 1, the end of each round rod one 54 is fixedly connected with a round block 55, a spring one 56 is movably sleeved on each round rod one 54, the horizontal plate 57 is fixedly connected with the two round blocks 55 through the two springs one 56, a group of through openings 12 are formed in the inner walls of the two sides of the frame 1, the two ends of the sliding rod 51 are movably penetrated through the through openings 12, six through holes 13 are formed in the inner walls of the two sides of the frame 1, each lock block 71 is movably inserted into the through hole 13, the two ends of the push rod 6 are fixedly installed with pushers 61, the surface of each pusher 61 is matched with the surface of each sliding rod 51, and the matched surfaces are all designed as inclined surfaces, the pushers 61 are used for pushing the two sliding rods 51 to move close to each other, a threaded rod 62 is penetrated through and screwed on the push rod 6, the threaded rod 62 is rotatably installed on the frame 1, the free end of the threaded rod 62 is fixedly connected with a torsion block, two limiting rods 14 are fixedly installed in the frame 1, the two limiting rods 14 are movably penetrated through the push rod 6 and the two long rods 7, the two ends of the frame 1 are provided with mounting plates 15, the cross rod 8 is fixedly installed in the frame 1, a rotating shaft 81 is rotatably installed on the cross rod 8, the two ends of the rotating shaft 81 are fixedly installed with a gear two 83 and a gear one 82,The upper end of the cross rod 8 is slidably provided with a rack two 84, a gear one 82 is engaged with the rack two 84, and a sliding groove one is formed in the surface of the cross rod 8; the bottom end and the upper end of the rack two 84 are fixedly connected with a sliding block 86 and a contact block 85 respectively, the sliding block 86 is slidably arranged in the sliding groove one, a round rod two 87 is fixedly connected in the sliding groove one, the round rod two 87 movably penetrates through the sliding block 86, a spring two 88 is movably arranged on the round rod two 87, the sliding block 86 is fixedly connected with the inner wall of the sliding groove one through the spring two 88, and there is a gap between the contact block 85 and the push rod 6; the contact block 85 is used for contacting the push rod 6 after moving; the threaded rod 62 movably penetrates through the two long rods 7; the opposite ends of the two long rods 7 are fixedly connected with a rack one 72; there is a height difference between the two rack ones 72; a gear two 83 is engaged with the two rack ones 72; the surface of each long rod 7 is provided with an avoiding hole 73; two round holes are formed in the bottom surface of the bottom plate 2; a heat dissipation fan 25 is arranged in each round hole; a heat dissipation plate 23 is embedded on the bottom plate 2; a group of heat dissipation fins 24 are fixedly arranged at the upper and lower ends of the heat dissipation plate 23; a protective cover 9 for protecting the bottom heat dissipation fins 24 is slidably arranged at the back end of the bottom plate 2; a dust screen is embedded on the bottom surface of the protective cover 9; dovetail strips 91 are fixedly arranged at the two sides of the upper end of the protective cover 9; sliding grooves two 93 are formed in the two sides of the bottom surface of the bottom plate 2; each dovetail strip 91 is slidably arranged in the sliding groove two 93; a connecting rod 92 is fixedly arranged at the upper end of the dovetail strip 91; the connecting rod 92 is fixedly connected with the push rod 6; shielding strips 94 are fixedly arranged at the two sides of the end of the protective cover 9; the two shielding strips 94 are attached to the bottom surface of the bottom plate 2; one end of the protective cover 9 is designed as an opening; a baffle one 26 and a baffle two 27 are fixedly arranged at the bottom end of the bottom plate 2; the baffle one 26 and the baffle two 27 are respectively arranged at the two sides of the bottom heat dissipation fins 24; the protective cover 9 and the baffle two 27 form a first surrounding structure to protect the bottom heat dissipation fins 24; the protective cover 9 is slid to one side to form a second surrounding structure with the baffle one 26 to shield the two round holes.

[0043] In the initial state, the dovetail blocks 4 arranged in the dovetail grooves 11 on the two sides of the upper surface of the frame 1 are special, and there is a certain gap between the dovetail blocks 4 on the two sides and the dovetail block 4 fixedly arranged in the middle. This design makes the three LED display screen bodies 3 also keep a certain interval during the installation process, effectively preventing the damage of the LED display screen bodies 3 caused by mutual extrusion or friction. By learning from the characteristics of the relatively independent and combinable magic cube components, a foundation is laid for subsequent installation and splicing. When installing the LED display screen body 3, first, the plug 33 on each LED display screen body 3 is accurately inserted into the socket 22 on the circuit board 21 of the bottom plate 2, completing the circuit connection and ensuring that the LED display screen body 3 can normally work under power supply. At the same time, by using the principle of the mortise and tenon structure, the tenon 31 at the bottom end of the four corners of the LED display screen body 3 is inserted into the mortise hole 41 formed in the upper surface of the dovetail block 4, realizing the preliminary fixation of the LED display screen body 3.

[0044] When the three LED display screen bodies 3 are all preliminarily fixed, the operator starts to twist the threaded rod 62, since the threaded rod 62 is in threaded connection with the push rod 6, the rotation of the threaded rod 62 will drive the push rod 6 to move along the width direction of the frame 1, the pushers 61 fixedly installed at the two ends of the push rod 6 move accordingly, since the surface of the pusher 61 abutting against the connecting piece 52 is designed as an inclined surface, when the pusher 61 moves, it will simultaneously apply force to the two connecting pieces 52, so as to drive the two slide rods 51 fixedly connected with the connecting pieces 52 to move close to each other, since the two ends of the slide rod 51 are respectively fixed with the dovetail blocks 4 sliding in the dovetail grooves 11, the movement of the slide rod 51 drives the two dovetail blocks 4 on the two sides to move close to the middle part in the dovetail grooves 11, and further drives the two LED display screen bodies 3 on the two sides to move close to the middle LED display screen body 3, finally, the three LED display screen bodies 3 are spliced to form a large LED display screen similar to an unfolded face of a magic cube, the rubber strips arranged on the two sides of the middle LED display screen body 3 play a sealing and buffering role when the two side display screens are close to abut against each other, further guaranteeing the connection stability and safety between the display screens;

[0045] When the pusher 61 moves to completely misaligned with the connecting piece 52, that is, the pusher 61 slides to fit the surface of the flat rod 53, it indicates that the LED display screen body 3 on both sides has been completely sealed and fitted with the LED display screen body 3 in the middle, and the docking process is completed. At this time, continue to twist the threaded rod 62 to rotate, and the push rod 6 and the two pushers 61 will continue to move. However, at this time, due to the change in the relative position of the pusher 61 and the slide rod 51, the two pushers 61 will no longer push the two slide rods 51 to move, but will keep the two slide rods 51 at the current position. The dovetail block 4 and the LED display screen body 3 on both sides will no longer move towards the middle, maintaining a stable state after docking. With the continuous rotation of the threaded rod 62, the movement of the push rod 6 will push the contact block 85. The contact block 85 is fixedly connected with the rack two 84, so the movement of the contact block 85 drives the rack two 84 to slide on the cross rod 8. Since the gear one 82 is engaged with the rack two 84, the movement of the rack two 84 drives the gear one 82 to rotate. The gear one 82 is fixed on the rotating shaft 81, thereby driving the rotating shaft 81 to rotate. The rotating shaft 81 is provided with a gear two 83, which is engaged with the rack one 72 fixed on the opposite ends of the two long rods 7. There is a height difference between the two rack one 72, which ensures that the gear two 83 can drive the two rack one 72 to move away from each other when rotating. The two rack one 72 are fixed with the two long rods 7 respectively, so that the movement of the two rack one 72 away from each other makes the two long rods 7 move away from each other. The long rod 7 is fixed with six lock blocks 71. With the movement of the long rod 7, the lock block 71 is inserted into the lock hole 32 on the surface of the tenon 31 of the LED display screen body 3 from the through hole 13 and the mortise 41 formed on the inner wall of the frame 1, thereby achieving the simultaneous locking of the three LED display screen bodies 3. Thus, the docking and locking of the LED display screen body 3 are completed, ensuring the stability of the LED display screen during use.

[0046] In the initial state, the protective cover 9 and the baffle two 27 form a first surrounding structure to protect the heat dissipation fins 24 at the bottom of the heat dissipation plate 23, effectively avoiding damage to the bottom heat dissipation fins 24 during transportation, installation and other early processes, and ensuring the integrity and functionality of the heat dissipation assembly.

[0047] When the LED display screen body 3 is locked, the push rod 6 moves a distance under the drive of the threaded rod 62. Since the push rod 6 is fixedly connected with the connecting rod 92, the connecting rod 92 moves the same distance. The connecting rod 92 is connected with the protective cover 9, so the movement of the connecting rod 92 drives the protective cover 9 to slide in the second sliding groove 93 opened on the bottom surface of the bottom plate 2. With the sliding of the protective cover 9, the bottom heat dissipation fins 24 are no longer protected, and the bottom heat dissipation fins 24 are exposed to the air, preparing for the heat dissipation of the LED display screen during operation, ensuring that the heat generated during the operation of the LED display screen can be dissipated in time, maintaining good working performance. When the LED display screen body 3 is locked, the protective cover 9 slides to the lower side of the two heat dissipation fans 25, forming a second surrounding structure with the baffle 1, shielding the two circular holes on the bottom plate 2 (the positions of the heat dissipation fans 25). The bottom surface of the protective cover 9 is embedded with a dust screen, which can effectively prevent dust from entering the interior through the heat dissipation fans 25, affecting the performance of the equipment. At the same time, the blocking strips 94 fixedly installed on the two sides of the end of the protective cover 9 are attached to the bottom surface of the bottom plate 2, shielding the second sliding groove 93, further preventing dust from entering, ensuring the cleanliness of the interior of the equipment and the normal operation of the heat dissipation fans 25 and the stable operation of the entire LED screen structure.

[0048] When the LED display screen body 3 needs to be disassembled, the operator twists the threaded rod 62 to make it reverse. The rotation of the threaded rod 62 drives the push rod 6 and the two pushers 61 to move in the opposite direction. At this time, the spring 2 resets the rack 2 to the initial state on the crossbar 8 by using the elastic reset action of the spring 2. The reset of the rack 2 drives the gear 1 to reverse, and the gear 1 drives the shaft 81 to reverse. The shaft 81 drives the gear 2 to reverse, and the reverse of the gear 2 drives the two racks 1 to move closer to each other. The two racks 1 drive the two long rods 7 to move closer to each other, so that the locking block 71 on the long rod 7 exits from the lock hole 32, releasing the locking of the LED display screen body 3. After the locking is released, the horizontal plate 57 drives the slide rod 51 to return to the initial position by using the elastic reset action of the spring 1 on the round rod 1. The two sides of the butt joint assembly 5 return to the initial state, and the two sides of the dovetail block 4 move away from each other in the dovetail groove 11, thereby driving the two sides of the LED display screen body 3 to move away from each other. Finally, the plug 33 is pulled out of the socket 22, and the LED display screen body 3 can be removed. During the entire disassembly process, due to the initial design of the structural relationship, there is still a certain gap between the adjacent LED display screen bodies 3, which facilitates the disassembly operation of the LED display screen body 3. In addition, the two limiting rods 14 fixedly installed in the frame 1 movably penetrate the push rod 6 and the two long rods 7, limiting the movement of the push rod 6 and the long rod 7, ensuring that each component moves in a specified path, improving the stability and reliability of the structure. The entire disassembly process is orderly and convenient.

[0049] Working principle:

[0050] Firstly, in the initial state, the dovetail blocks 4 in the dovetail grooves 11 on both sides of the upper surface of the frame 1 are specially arranged, and there is a certain gap between the dovetail blocks 4 on both sides and the fixedly installed dovetail blocks 4 in the middle. This design allows the three LED display screen bodies 3 to also maintain a certain interval during installation, effectively preventing damage between the LED display screen bodies 3 due to mutual extrusion or friction. By learning from the characteristics of relative independence and combination of Rubik's Cube components, a foundation is laid for subsequent installation and splicing. When installing the LED display screen body 3, first, the plug 33 on each LED display screen body 3 is accurately inserted into the socket 22 on the circuit board 21 of the bottom plate 2 that is compatible with it, completing the circuit connection and ensuring that the LED display screen body 3 can work normally. At the same time, by using the principle of mortise and tenon structure, the tenon 31 at the bottom of the four corners of the LED display screen body 3 is inserted into the mortise 41 on the upper surface of the dovetail block 4, achieving preliminary fixation of the LED display screen body 3.

[0051] Secondly, after the three LED display screen bodies 3 are preliminarily fixed, the operator starts to twist the threaded rod 62. Since the threaded rod 62 and the push rod 6 are in a threaded connection, the rotation of the threaded rod 62 will drive the push rod 6 to move along the width direction of the frame 1. The pusher 61 fixedly installed at both ends of the push rod 6 moves accordingly. Since the surface of the pusher 61 that is in contact with the connecting piece 52 is designed as an inclined surface, when the pusher 61 moves, it will simultaneously apply force to the two connecting pieces 52, prompting the two sliding rods 51 fixedly connected to the connecting pieces 52 to move closer to each other. The two ends of the sliding rod 51 are fixedly connected to the dovetail blocks 4 that slide in the dovetail groove 11, so the movement of the sliding rod 51 drives the dovetail blocks 4 on both sides to move closer to the middle in the dovetail groove 11, and in turn drives the LED display screen bodies 3 on both sides to move closer to the middle LED display screen body 3. Finally, the three LED display screen bodies 3 are spliced to form a large LED display screen similar to an unfolded face of a Rubik's Cube. The rubber strips arranged on both sides of the middle LED display screen body 3 play a sealing and buffering role when the two sides of the display screen are close together, further ensuring the stability and safety of the connection between the display screens.

[0052] Third step, when the pusher 61 moves to completely misaligned with the connecting piece 52, that is, the pusher 61 slides to the surface of the flat bar 53, it indicates that the two sides of the LED display screen body 3 have been completely sealed and attached with the middle LED display screen body 3, and the docking process is completed. At this time, continue to twist the threaded rod 62 to rotate, and the push rod 6 and the two pushers 61 will continue to move. However, at this time, due to the change in the relative position of the pusher 61 and the slide rod 51, the two pushers 61 will no longer push the two slide rods 51 to move, but will keep the two slide rods 51 at the current position. The two sides of the dovetail block 4 and the LED display screen body 3 will no longer move towards the middle, maintaining the stable state after docking. With the continuous rotation of the threaded rod 62, the push rod 6 continues to move and will push the contact block 85. The contact block 85 is fixedly connected with the rack two 84, so the movement of the contact block 85 drives the rack two 84 to slide on the cross rod 8. Since the gear one 82 is engaged with the rack two 84, the movement of the rack two 84 drives the gear one 82 to rotate. The gear one 82 is fixed on the rotating shaft 81, thereby driving the rotating shaft 81 to rotate. The rotating shaft 81 is provided with a gear two 83, which is engaged with the two racks one 72 fixed at the opposite ends of the two long rods 7. There is a height difference between the two racks one 72, which ensures that the gear two 83 can drive the two racks one 72 to move away from each other when rotating. The two racks one 72 are respectively fixed with the two long rods 7, so that the movement of the two racks one 72 away from each other causes the movement of the two long rods 7 away from each other. The long rod 7 is fixed with six locking blocks 71. With the movement of the long rod 7, the locking blocks 71 are respectively inserted into the locking holes 32 on the surface of the tenon 31 of the LED display screen body 3 from the through holes 13 and the mortises 41 on the inner walls of the two sides of the frame 1. Thus, the three LED display screen bodies 3 are simultaneously locked, and the docking and locking of the LED display screen body 3 are completed, ensuring the stability of the LED display screen during use.

[0053] Fourth step, in the initial state, the protective cover 9 and the baffle two 27 form a first surrounding structure to protect the heat dissipation fins 24 at the bottom of the heat dissipation plate 23, effectively avoiding possible damage to the bottom heat dissipation fins 24 during transportation, installation and other early processes, ensuring the integrity and functionality of the heat dissipation assembly.

[0054] Fifth step, when the LED display screen body 3 is locked, the push rod 6 moves a distance under the drive of the threaded rod 62, because the push rod 6 is fixedly connected with the connecting rod 92, the connecting rod 92 will move the same distance, the connecting rod 92 is connected with the protective cover 9, so the movement of the connecting rod 92 drives the protective cover 9 to slide in the groove two 93 opened on the bottom surface of the bottom plate 2, with the sliding of the protective cover 9, it no longer protects the bottom heat dissipation fins 24, the bottom heat dissipation fins 24 are exposed to the air, preparing for the heat dissipation of the LED display screen during operation, ensuring that the heat generated during the operation of the LED display screen can be dissipated in time, maintaining good working performance, when the LED display screen body 3 is locked, the protective cover 9 slides to the lower side of the two heat dissipation fans 25, forming a second surrounding structure with the baffle one 26, shielding the two round holes on the bottom plate 2 (the position of the heat dissipation fan 25), the bottom surface of the protective cover 9 is embedded with a dust screen, which can effectively prevent dust from entering the interior through the heat dissipation fan 25, affecting the performance of the equipment, at the same time, the blocking strip 94 fixedly installed on both sides of the end of the protective cover 9 is attached to the bottom surface of the bottom plate 2, shielding the groove two 93, further preventing dust from entering, ensuring the cleanliness of the equipment and the normal operation of the heat dissipation fan 25 and the stable operation of the whole LED screen structure;

[0055] Sixth step, when the LED display screen body 3 needs to be disassembled, the operator twists the threaded rod 62 to make it reverse, the rotation of the threaded rod 62 makes the push rod 6 and the two pushers 61 move in the opposite direction, at this time, the elastic reset action of the spring two 88 is used, the rack two 84 is reset to the initial state on the cross bar 8, the reset of the rack two 84 drives the gear one 82 to reverse, the gear one 82 drives the rotating shaft 81 to reverse, the rotating shaft 81 drives the gear two 83 to reverse, the reverse of the gear two 83 makes the two racks one 72 move closer to each other, the two racks one 72 drive the two long rods 7 to move closer to each other, so that the locking block 71 on the long rod 7 exits from the lock hole 32, releasing the locking of the LED display screen body 3, after releasing the locking, the elastic reset action of the spring one 56 on the round rod one 54 is used, the horizontal plate 57 drives the slide rod 51 to return to the initial position, the butt joint assembly 5 on both sides returns to the initial state, the dovetail block 4 on both sides moves away from each other in the dovetail groove 11, thereby driving the LED display screen body 3 on both sides to move away from each other, finally, the plug 33 is pulled out of the socket 22, the LED display screen body 3 can be removed, during the whole disassembly process, due to the initial design of the structural relationship, there is still a certain gap between the adjacent LED display screen body 3, which facilitates the disassembly operation of the LED display screen body 3 by the staff, in addition, the two limiting rods 14 fixedly installed in the frame 1 movably penetrate the push rod 6 and the two long rods 7, limiting the movement of the push rod 6 and the long rod 7, ensuring that each component moves in the specified path, improving the stability and reliability of the structure, the whole disassembly process is orderly and convenient.

[0056] It should be noted that the above-mentioned embodiments are merely given as an example to illustrate the application and are not intended to limit the mode of implementation. Based on the above description, one of ordinary skill in the art can make further changes or modifications to the embodiments. Here, it is not necessary or possible to exhaust all the embodiments. The obvious changes or modifications derived from the above should be within the protection scope of the application.

Claims

1. A mortise and tenon structure for a Rubik's Cube LED screen, comprising a frame (1) and a base plate (2), wherein three LED display screen bodies (3) are mounted on the upper end of the frame (1), characterized in that: Rubber strips are provided on both sides of the LED display body (3) located in the middle. Each LED display body (3) is connected to a plug (33). Tenons (31) are fixedly connected to the four corners of the bottom of each LED display body (3). Lock holes (32) are opened on the surface of each tenon (31). The base plate (2) is installed at the bottom of the frame (1). A circuit board (21) is provided on the base plate (2). A socket (22) that matches the plug (33) is provided on the circuit board (21). Dovetail grooves (11) are opened on both sides of the upper surface of the frame (1). Three dovetail blocks (4) are provided in each dovetail groove (11). A mortise (41) that matches the tenon (31) is opened on the upper surface of each dovetail block (4). Among them, the dovetail block (4) located in the middle is fixedly installed in the dovetail groove (11), and the dovetail blocks (4) located on both sides are slidably installed in the dovetail groove (11). Both sides of the inner cavity of the frame (1) are provided with docking components (5). The docking components (5) include slide rods (51). The two ends of the slide rods (51) are fixedly connected to the dovetail blocks (4) sliding in the two dovetail grooves (11) respectively, and are used to push the LED display body (3) on both sides closer to the middle. A connector (52) is fixedly connected to the slide rod (51), and a straight rod (53) is fixedly connected to the connector (52). The frame (1) is provided with a locking component for locking the LED display body (3). The locking component includes a push rod (6), a long rod (7) and a cross rod (8). Six locking blocks (71) are fixedly installed at the opposite ends of the two long rods (7). Each locking block (71) moves through the dovetail block (4) and is inserted into the lock hole (32) to lock the LED display body (3). Two docking components (5) are distributed along the length of the frame (1). A horizontal plate (57) is fixedly installed at the bottom of the slide rod (51). Two round rods (54) are movably passed through the horizontal plate (57). Each round rod (54) is fixedly connected to the inner wall of the frame (1). A round block (55) is fixedly connected to the end of each round rod (54). A spring (56) is movably sleeved on each round rod (54). The horizontal plate (57) is fixedly connected to the two round blocks (55) through the two springs (56). The inner walls on both sides of the frame (1) are provided with a set of through openings (12), and both ends of the slide rod (51) are movably inserted through the through openings (12). The inner walls on both sides of the frame (1) are provided with six through holes (13); wherein each of the locking blocks (71) is movably inserted into the through hole (13). Both ends of the push rod (6) are fixedly installed with pushers (61), and the surface of each pusher (61) is in contact with the surface of each slide rod (51), and the contacting surfaces are all designed with bevels to push the two slide rods (51) to move closer to each other; wherein, a threaded rod (62) is threaded through the push rod (6), the threaded rod (62) is rotatably installed on the frame (1), and a torsion block is fixedly connected to the free end of the threaded rod (62). Two limiting rods (14) are fixedly installed inside the frame (1), and the two limiting rods (14) are movable through the push rod (6) and the two long rods (7). Both ends of the frame (1) are provided with mounting plates (15). The crossbar (8) is fixedly installed inside the frame (1). A rotating shaft (81) is rotatably installed on the crossbar (8). Gear 2 (83) and gear 1 (82) are fixedly installed at both ends of the rotating shaft (81). A rack 2 (84) is slidably installed on the upper end of the crossbar (8). Gear 1 (82) meshes with rack 2 (84). A sliding groove 1 is opened on the surface of the crossbar (8). A slider (86) and a contact block (85) are fixedly connected to the bottom and top ends of rack 2 (84), respectively. (86) is slidably installed in a slide groove, and a round rod (87) is fixedly connected in the slide groove. The round rod (87) movably passes through the slider (86). A spring (88) is movably sleeved on the round rod (87). The slider (86) is fixedly connected to the inner wall of the slide groove through the spring (88). There is a gap between the contact block (85) and the push rod (6). The contact block (85) is used to contact the push rod (6) after it moves. The threaded rod (62) movably passes through two long rods (7). Both ends of the two long rods (7) are fixedly connected to racks (72), and there is a height difference between the two racks (72). The gear (83) meshes with the two racks (72); and each long rod (7) has a clearance hole (73) on its surface.

2. The mortise and tenon structure of a cube-shaped LED screen according to claim 1, characterized in that: The bottom surface of the base plate (2) has two round holes, and each round hole is equipped with a cooling fan (25). A heat sink (23) is embedded in the base plate (2), and a set of heat sink fins (24) are fixedly installed at both the upper and lower ends of the heat sink (23). The bottom plate (2) is slidably mounted with a protective cover (9) for protecting the bottom heat dissipation fins (24), and a dustproof net is embedded in the bottom surface of the protective cover (9).

3. The mortise and tenon structure of a cube-shaped LED screen according to claim 2, characterized in that: Dovetail strips (91) are fixedly installed on both sides of the upper end of the protective cover (9), and sliding grooves (93) are opened on both sides of the bottom surface of the base plate (2). Each dovetail strip (91) is slidably installed in the sliding groove (93). A connecting rod (92) is fixedly installed on the upper end of the dovetail strip (91), and the connecting rod (92) is fixedly connected to the push rod (6).

4. The mortise and tenon structure of a Rubik's Cube LED screen according to claim 3, characterized in that: Both sides of the protective cover (9) are fixedly installed with shielding strips (94), and both shielding strips (94) are in contact with the bottom surface of the base plate (2). One end of the protective cover (9) is designed to be open, and the bottom end of the base plate (2) is fixedly installed with baffle one (26) and baffle two (27). Among them, the first baffle (26) and the second baffle (27) are located on both sides of the bottom heat dissipation fins (24).

5. The mortise and tenon structure of a Rubik's Cube LED screen according to claim 4, characterized in that: The protective cover (9) and the second baffle (27) form a first surrounding structure to protect the heat dissipation fins (24) at the bottom. The protective cover (9) slides to one side and forms a second surrounding structure with the first baffle (26) to block the two round holes.

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