Magic cube LED screen structure of mortise and tenon joint structure

Abstract

The invention discloses a magic cube LED screen structure of a mortise and tenon joint structure, and relates to the technical field of LED display screens, the magic cube LED screen structure comprises a frame and a bottom plate, three LED display screen bodies are installed at the upper end of the frame, and rubber strips are arranged on the two sides of the LED display screen body located in the middle. The tenons at the four corners of the bottom end of the LED display screen body are correspondingly inserted into the mortises formed in the upper surfaces of the dovetail blocks, during primary fixing and splicing, the rubber strips arranged on the two sides of the middle LED display screen body play a sealing and buffering role when display screens on the two sides are close to each other and attached, then the threaded rod is twisted to drive a series of components to move, and the LED display screen body can be fixed and spliced. The locking blocks on the long rods are inserted into the locking holes formed in the surfaces of the tenons of the LED display screen bodies from the through holes and the mortises formed in the inner walls of the two sides of the frame, the three LED display screen bodies are locked at the same time, the firmness and stability of display screen connection are guaranteed in an all-around mode, and it is guaranteed that the situations of looseness, displacement and the like cannot occur in the using process.

Description

Technical Field

[0001] The present invention relates to the technical field of LED display screens, and particularly relates to a Rubik's Cube LED screen structure with a mortise and tenon structure. Background Art

[0002] With the rapid development of LED display technology, LED display screens are increasingly widely used in various fields. Especially in scenarios such as advertising, stage, stadiums, and conference displays, LED display screens have become the mainstream display devices due to their advantages of high brightness, high definition, and long lifespan.

[0003] Currently, for the existing LED screen structures, it is found that there are at least the following technical problems:

[0004] First, when installing traditional LED display screens, bolts are usually used for fixation or simple snap structures are used for splicing. Although this method can fix the display screen, in the actual installation process, the following problems often exist:

[0005] 1. High installation accuracy requirements: Since the splicing between display screens needs to be very precise, even a slight deviation may cause the display screens not to be fully aligned, affecting the display effect;

[0006] 2. Complicated operation: Multiple people are required to cooperate during the installation process, and tools are needed for fixation, which is time-consuming and laborious;

[0007] 3. Prone to damage: During the installation process, the display screens are prone to collide with each other, causing damage to the surface or internal components of the display screens.

[0008] Second, the heat dissipation method of traditional LED screen structures usually uses fans or heat sinks. However, in actual applications, the heat dissipation fans are prone to dust accumulation, affecting the heat dissipation efficiency, and the heat sinks are prone to collision and damage during transportation and installation, resulting in a decline in heat dissipation performance. In view of the above problems, an LED display screen structure is proposed, which adopts a mortise and tenon structure of Rubik's Cube modular design and can be flexibly assembled and disassembled. Summary of the Invention

[0009] Technical Problems to be Solved

[0010] Aiming at the deficiencies of the prior art, the present invention provides a Rubik's Cube LED screen structure with a mortise and tenon structure to solve the above technical problems.

[0011] Technical Solutions

[0012] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0013] A magic cube LED screen structure with mortise and tenon joints, comprising a frame and a bottom plate. Three LED display screen bodies are installed at the upper end of the frame. Rubber strips are arranged on both sides of the LED display screen body in the middle. A plug is connected to each LED display screen body. Tenons are fixedly connected to the four corners at the bottom end of each LED display screen body. Lock holes are formed on the surface of each tenon. The bottom plate is installed at the bottom of the frame. A circuit board is arranged on the bottom plate. Sockets adapted to the plugs are arranged on the circuit board. Dovetail grooves are formed on both sides of the upper surface of the frame. Three dovetail blocks are arranged in each dovetail groove. Mortises adapted to the tenons are formed on the upper surface of each dovetail block. The dovetail block in the middle is fixedly installed in the dovetail groove. The dovetail blocks on both sides are slidably installed in the dovetail groove. Docking components are arranged on both sides of the inner cavity of the frame. The docking component includes a sliding rod. The two ends of the sliding rod are respectively fixedly connected to the dovetail blocks sliding in the two dovetail grooves, and are used to push the LED display screen bodies on both sides to approach the middle. A connecting piece is fixedly connected to the sliding rod. A straight rod is fixedly connected to the connecting piece. A locking component for locking the LED display screen body is arranged in the frame. The locking component includes a push rod, a long rod and a cross rod. Six lock blocks are fixedly installed at the two ends of the two long rods facing away from each other. Each lock block respectively passes through the dovetail block movably and is inserted into the lock hole, and is used to lock the LED display screen body.

[0014] Preferably: The two docking components are distributed along the length direction of the frame. A cross plate is fixedly installed at the bottom end of the sliding rod. Two first round rods penetrate through the cross plate movably. Each first round rod is fixedly connected to the inner wall of the frame. A round block is fixedly connected to the end of each first round rod. A first spring is movably sleeved on each first round rod. The cross plate is fixedly connected to the two round blocks through the two first springs.

[0015] Preferably: A group of through openings are formed on both inner walls of the frame. The two ends of the sliding rod penetrate through the through openings movably. Six through holes are formed on both inner walls of the frame. Each lock block is inserted into the through hole movably.

[0016] Preferably: Push pieces are fixedly installed at both ends of the push rod. The surface of each push piece is respectively attached to the surface of each sliding rod, and the attached surfaces are both designed as inclined surfaces, and are used to push the two sliding rods to move closer to each other. A threaded rod penetrates through the push rod in a threaded manner. The threaded rod is rotatably installed on the frame. A torsion block is fixedly connected to the free end of the threaded rod. Two limiting rods are fixedly installed in the frame. The two limiting rods penetrate through the push rod and the two long rods movably. Mounting plates are arranged at both ends of the frame.

[0017] Preferably, the cross bar is fixedly installed inside the frame. A rotating shaft is rotatably installed on the cross bar. Two ends of the rotating shaft are respectively fixedly installed with a rotating shaft and a first gear. A second rack is slidably installed on the upper end of the cross bar. The first gear meshes with the second rack. A first chute is formed on the surface of the cross bar. The bottom end and the upper end of the second rack are respectively fixedly connected with a slider and a contact block. The slider is slidably installed in the first chute. A second round bar is fixedly connected inside the first chute. The second round bar movably penetrates through the slider. A second spring is movably sleeved on the second round bar. The slider is fixedly connected with the inner wall of the first chute through the second spring. There is a gap between the contact block and the push rod. The contact block is used for contacting the push rod after the push rod moves. The threaded rod movably penetrates through the two long rods.

[0018] Preferably, two opposite ends of the two long rods are respectively fixedly connected with a first rack. There is a height difference between the two first racks. The second gear meshes with the two first racks. Avoidance holes are formed on the surface of each long rod.

[0019] Preferably, two round holes are formed on 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. A dustproof net is embedded on the bottom surface of the protective cover.

[0020] Preferably, dovetail bars are fixedly installed on both sides of the upper end of the protective cover. Chute two are formed on both sides of the bottom surface of the bottom plate. Each dovetail bar is respectively slidably installed in the chute two. A connecting rod is fixedly installed at the upper end of the chute two. The connecting rod is fixedly connected with the push rod.

[0021] Preferably, shielding bars are fixedly installed on both sides of the end of the protective cover. The two shielding bars are both attached to the bottom surface of the bottom plate. One end of the protective cover is designed to be open. A first baffle and a second baffle are fixedly installed at the bottom end of the bottom plate. The first baffle and the second baffle are respectively located on both sides of the bottom heat dissipation fins.

[0022] Preferably, the protective cover and the second baffle form a first surrounding structure to protect the bottom heat dissipation fins. The protective cover slides to one side and forms a second surrounding structure with the first baffle to block the two round holes.

[0023] Beneficial effects

[0024] First: During installation, using the mortise and tenon structure, insert the tenons at the four corners of the bottom end of the LED display screen body into the mortises opened on the upper surface of the dovetail blocks to achieve preliminary fixation. When splicing, the rubber strips provided on both sides of the middle LED display screen body play a role in sealing and buffering when the two side display screens are close to each other. Subsequently, by turning the threaded rod to drive a series of components to move, the locking blocks on the long rod are inserted into the locking holes opened on the surface of the tenons of the LED display screen body through the through holes and mortises opened on the inner walls of both sides of the frame, realizing the simultaneous locking of the three LED display screen bodies, comprehensively ensuring the firmness and stability of the connection of the display screens, and ensuring that there will be no loosening, displacement, etc. during use.

[0025] Second: The dovetail blocks with a special layout in the dovetail grooves on both sides of the upper surface of the frame. There is a certain gap between the dovetail blocks sliding on both sides and the fixed dovetail block in the middle. This allows for an appropriate interval to be reserved between the three LED display screen bodies during the installation process, effectively avoiding the situation where the display screens collide with each other during installation due to a slight deviation in the installation angle or careless operation, resulting in damage to the LED display screen body, greatly reducing this risk, laying a safe and reliable foundation for the subsequent smooth splicing to form a complete LED display screen. At the same time, it also draws on the characteristics of the relatively independent and combinable Rubik's Cube components, improving the convenience and rationality of installation.

[0026] Third: The operator only needs to turn 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 pushing parts fixedly installed at both ends of the push rod will move accordingly. Utilizing the inclined surface design of the mating surface between the pushing part and the connecting part, when the pushing part moves, it will simultaneously exert a force on the two connecting parts, prompting the two sliding rods fixedly connected to the connecting parts to move closer to each other, and then driving the two side LED display screen bodies to move closer to the middle LED display screen body, automatically completing the docking process. When the pushing part moves to be completely misaligned with the connecting part, that is, when it is in contact with the surface of the straight rod, the two side LED display screen bodies have been completely sealed and fitted with the middle LED display screen body. At this time, continue to turn the threaded rod, and the sliding rods will remain in their current positions, maintaining the stable state after docking. The entire docking process requires little manual intervention, and the operation is simple and efficient.

[0027] IV: In the initial state, the protective cover and the second baffle form a first surrounding structure, which tightly protects the heat dissipation fins at the bottom of the heat dissipation plate, effectively avoiding possible damage such as collision and scratching to the bottom heat dissipation fins during the early processes of transportation and installation, ensuring the integrity of the heat dissipation component, and guaranteeing the normal functioning of the subsequent heat dissipation function. After the LED display main body is locked, the push rod moves under the drive of the threaded rod, driving the protective cover to slide in the second chute opened on both sides of the bottom surface of the bottom plate, exposing the bottom heat dissipation fins to the air, creating favorable conditions for heat dissipation when the LED display is working, ensuring that the heat generated during the operation of the LED display can be dissipated in a timely manner, and maintaining good working performance. At the same time, the protective cover slides below the two heat dissipation fans, forming a second surrounding structure with the first baffle to block the two circular holes (where the heat dissipation fans are located) on the bottom plate. The dust-proof net embedded in the bottom surface of the protective cover can effectively prevent dust from entering through the heat dissipation fans. The shielding strips fixedly installed on both sides of the end of the protective cover are attached to the bottom surface of the bottom plate to block the second chute, further preventing dust from entering, comprehensively ensuring the cleanliness inside the device, and ensuring the normal operation of the heat dissipation fans and the stable operation of the entire LED screen structure.

[0028] V: When it is necessary to disassemble the LED display main body, the operator twists the threaded rod to reverse it. The rotation of the threaded rod causes the push rod and the two pushing members to move in the opposite direction. At this time, by using the elastic reset function of the second spring, the second rack returns to its initial state on the cross bar. Through gear transmission, the lock block on the long rod withdraws from the lock hole, releasing the lock on the LED display main body. After unlocking, by using the elastic reset function of the first spring on the first round rod, the cross plate drives the sliding rod to return to its initial position, and the docking components on both sides return to their initial states. The dovetail blocks on both sides move away from each other in the dovetail grooves, thereby driving the LED display main bodies on both sides to move away from each other. Due to the structural relationship of the initial design, there is still a certain gap between adjacent LED display main bodies during the entire disassembly process, which is convenient for the staff to unplug the plug from the socket, and then smoothly remove the LED display main body. The entire disassembly process is orderly and very convenient, greatly improving the efficiency of maintaining and replacing the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly and implement it in accordance with the content of the description, the following takes the preferred embodiments of the present invention and describes them in detail in conjunction with the drawings as follows.

[0030] Figure 1 It is a structural diagram of the overall structure of the mortise and tenon structure magic cube LED screen of the present invention;

[0031] Figure 2 It is a structural diagram of the mounting plate of the present invention;

[0032] Figure 3 It is a structural diagram of the framework of the present invention;

[0033] Figure 4 is a structural diagram of the slide bar of the present invention;

[0034] Figure 5 It is a structural diagram of the long rod of the present invention;

[0035] Figure 6 It is a structural diagram of the docking assembly of the present invention;

[0036] Figure 7 is a structural diagram of the base plate of the present invention;

[0037] Figure 8 It is a structural diagram of the cutaway protective cover of the present invention;

[0038] Figure 9 It is a structural diagram of the cross bar of the present invention;

[0039] Figure 10 is a structural diagram of a push rod of the present invention;

[0040] Figure 11 It is a structural diagram of the dovetail block of the present invention.

[0041] Legend: 1. Frame; 11. Dovetail groove; 12. Through hole; 13. Through hole; 14. Limit rod; 15. Mounting plate; 2. Bottom plate; 21. Circuit board; 22. Socket; 23. Heat sink; 24. Heat sink fin; 25. Cooling fan; 26. Baffle 1; 27. Baffle 2; 3. LED display main body; 31. Tenon; 32. Lock hole; 33. Plug; 4. Dovetail block; 41. Mortise; 5. Docking assembly; 51. Sliding rod; 52. Connector; 53. Straight rod Part; 54, round rod one; 55, round block; 56, spring one; 57, cross plate; 6, push rod; 61, push member; 62, threaded rod; 7, long rod; 71, lock block; 72, rack one; 73, avoidance hole; 8, cross bar; 81, shaft; 82, gear one; 83, gear two; 84, rack two; 85, contact block; 86, slider; 87, round rod two; 88, spring two; 9, protective cover; 91, dovetail strip; 92, connecting rod; 93, slide groove two; 94, shielding strip. DETAILED DESCRIPTION

[0042] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0043] Embodiment: 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 the figure, in view of the problems existing in the prior art, the present invention provides a magic cube LED screen structure with a mortise and tenon structure, which includes a frame 1 and a bottom plate 2. Three LED display screen bodies 3 are installed at the upper end of the frame 1. Rubber strips are arranged on both sides of the LED display screen body 3 in the middle. A plug 33 is connected to each LED display screen body 3. Tenons 31 are fixedly connected to the four corners at the bottom of each LED display screen body 3. Lock holes 32 are formed on the surface of each tenon 31. The bottom plate 2 is installed at the bottom of the frame 1. A circuit board 21 is arranged on the bottom plate 2, and a socket 22 adapted to the plug 33 is arranged on the circuit board 21. Dovetail grooves 11 are formed on both sides of the upper surface of the frame 1. Three dovetail blocks 4 are arranged in each dovetail groove 11. Mortise eyes 41 adapted to the tenons 31 are formed on the upper surface of each dovetail block 4. The dovetail block 4 in the middle is fixedly installed in the dovetail groove 11, and the dovetail blocks 4 on both sides are slidably installed in the dovetail groove 11. Docking components 5 are arranged on both sides of the inner cavity of the frame 1. The docking component 5 includes a sliding rod 51. The two ends of the sliding rod 51 are respectively fixedly connected to the dovetail blocks 4 sliding in the two dovetail grooves 11, and are used to push the LED display screen bodies 3 on both sides to approach the middle. A connecting piece 52 is fixedly connected to the sliding rod 51, and a straight rod 53 is fixedly connected to the connecting piece 52. A locking component for locking the LED display screen body 3 is arranged in the frame 1. The locking component includes a push rod 6, a long rod 7 and a cross bar 8. Six locking blocks 71 are fixedly installed at the two ends of the two long rods 7 facing away from each other. Each locking block 71 respectively passes through the dovetail block 4 movably and is inserted into the lock hole 32, and is used to lock the LED display screen body 3. The two docking components 5 are distributed along the length direction of the frame 1. A cross plate 57 is fixedly installed at the bottom end of the sliding rod 51. Two first round rods 54 penetrate through the cross plate 57 movably. Each first 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 first round rod 54. A first spring 56 is movably sleeved on each first round rod 54. The cross plate 57 is fixedly connected to the two round blocks 55 through the two first springs 56. A group of through openings 12 are formed on both inner walls of the frame 1. The two ends of the sliding rod 51 respectively penetrate through the through openings 12 movably. Six through holes 13 are formed on both inner walls of the frame 1. Each locking block 71 respectively penetrates through the through holes 13 movably. Push pieces 61 are fixedly installed at both ends of the push rod 6. The surface of each push piece 61 is respectively in contact with the surface of each sliding rod 51, and the contacting surfaces are all designed as inclined surfaces, and are used to push the two sliding rods 51 to move closer to each other. A threaded rod 62 is connected to the push rod 6 in a threaded through manner. The threaded rod 62 is rotatably installed on the frame 1. A torsion block is fixedly connected to the free end of the threaded rod 62. Two limiting rods 14 are fixedly installed in the frame 1. The two limiting rods 14 respectively penetrate through the push rod 6 and the two long rods 7 movably. Mounting plates 15 are arranged at both ends of the frame 1. The cross bar 8 is fixedly installed in the frame 1. A rotating shaft 81 is rotatably installed on the cross bar 8. A rotating shaft 81 and a first gear 82 are respectively fixedly installed at both ends of the rotating shaft 81.A second rack 84 is slidably installed at the upper end of the cross bar 8. The first gear 82 meshes with the second rack 84. A first chute is formed on the surface of the cross bar 8. A slider 86 and a contact block 85 are respectively and fixedly connected to the bottom end and the upper end of the second rack 84. The slider 86 is slidably installed in the first chute. A second round rod 87 is fixedly connected in the first chute. The second round rod 87 movably penetrates through the slider 86. A second spring 88 is movably sleeved on the second round rod 87. The slider 86 is fixedly connected to the inner wall of the first chute through the second 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 the push rod 6 moves. The threaded rod 62 movably penetrates through the two long rods 7. Rack teeth 72 are fixedly connected to the opposite ends of the two long rods 7. There is a height difference between the two rack teeth 72. The second gear 83 meshes with the two rack teeth 72. An avoidance hole 73 is formed on the surface of each long rod 7. 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 in the bottom plate 2. A group of heat dissipation fins 24 are fixedly installed 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 installed at the back end of the bottom plate 2. A dust-proof net is embedded in the bottom surface of the protective cover 9. Dovetail bars 91 are fixedly installed on both sides of the upper end of the protective cover 9. Chute grooves 93 are formed on both sides of the bottom surface of the bottom plate 2. Each dovetail bar 91 is respectively slidably installed in the chute groove 93. A connecting rod 92 is fixedly installed at the upper end of the chute groove 93. The connecting rod 92 is fixedly connected to the push rod 6. Blocking bars 94 are fixedly installed on both sides of the end of the protective cover 9. Both blocking bars 94 are attached to the bottom surface of the bottom plate 2. One end of the protective cover 9 is designed to be open. A first baffle 26 and a second baffle 27 are fixedly installed at the bottom end of the bottom plate 2. The first baffle 26 and the second baffle 27 are respectively located on both sides of the bottom heat dissipation fins 24. The protective cover 9 and the second baffle 27 form a first surrounding structure to protect the bottom heat dissipation fins 24. 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;

[0044] 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. There are certain gaps between the dovetail blocks 4 on both sides and the dovetail block 4 fixedly installed in the middle. This design enables a certain interval to be reserved between the three LED display screen bodies 3 during the installation process, effectively preventing damage to the LED display screen bodies 3 caused by mutual extrusion or friction. Drawing on the characteristics of the relatively independent and combinable Rubik's Cube components, it lays a foundation for subsequent installation and splicing. When installing the LED display screen body 3, first accurately insert the plugs 33 on each LED display screen body 3 into the sockets 22 adapted thereto on the circuit board 21 of the bottom plate 2 to complete the circuit connection and ensure that the LED display screen body 3 can be normally powered on and work. At the same time, using the principle of the mortise and tenon structure, insert the tenons 31 at the four corners of the bottom end of the LED display screen body 3 into the mortises 41 formed on the upper surface of the dovetail block 4 to achieve the preliminary fixation of the LED display screen body 3;

[0045] When the preliminary fixation of all three LED display bodies 3 is completed, the operator starts to twist the threaded rod 62. Since the threaded rod 62 is in a 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 pushing members 61 fixedly installed at both ends of the push rod 6 will move accordingly. Since the surface of the pushing member 61 that fits with the connecting member 52 is designed as an inclined surface, when the pushing member 61 moves, it will simultaneously exert a force on the two connecting members 52, prompting the two sliding rods 51 fixedly connected to the connecting members 52 to move closer to each other. The two ends of the sliding rod 51 are respectively fixed to the dovetail blocks 4 sliding in the dovetail groove 11. Therefore, 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, thereby driving the LED display bodies 3 on both sides to move closer to the LED display body 3 in the middle. Finally, the three LED display bodies 3 are spliced to form a large LED display similar to the unfolded surface of a Rubik's cube. Rubber strips are provided on both sides of the LED display body 3 in the middle. When the two side displays approach and fit together, they play a role in sealing and buffering, further ensuring the connection stability and safety between the displays;

[0046] When the pushing member 61 moves to be completely misaligned with the connecting member 52, that is, when the pushing member 61 slides to fit against the surface of the straight rod member 53, it indicates that the LED display main bodies 3 on both sides have been completely sealed and fitted with the LED display main 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 pushing members 61 will continue to move. However, at this time, due to the change in the relative position between the pushing member 61 and the sliding rod 51, the two pushing members 61 will no longer push the two sliding rods 51 to move, but keep the two sliding rods 51 in their current positions. The dovetail blocks 4 and the LED display main bodies 3 on both sides also no longer move closer to the middle, maintaining the stable state after docking. As the threaded rod 62 continues to rotate, the continuous movement of the push rod 6 will push the contact block 85. The contact block 85 is fixedly connected to the second rack 84. Therefore, the movement of the contact block 85 drives the second rack 84 to slide on the cross bar 8. Since the first gear 82 meshes with the second rack 84, the movement of the second rack 84 drives the first gear 82 to rotate. The first gear 82 is fixed on the rotating shaft 81, thereby driving the rotating shaft 81 to rotate. The two ends of the rotating shaft 81 are respectively provided with second gears 83. The second gears 83 mesh with the first racks 72 fixed to the opposite ends of the two long rods 7. And there is a height difference between the two first racks 72, which ensures that when the second gears 83 rotate, they can drive the two first racks 72 to move away from each other. The two first racks 72 are respectively fixed to the two long rods 7. Therefore, the two first racks 72 moving away from each other causes the two long rods 7 to move away from each other. Six locking blocks 71 are fixed on the long rods 7. As the long rods 7 move, the locking blocks 71 are respectively inserted into the locking holes 32 opened on the surfaces of the tenon heads 31 of the LED display main bodies 3 through the through holes 13 and mortises 41 opened on the inner walls of both sides of the frame 1, realizing the simultaneous locking of the three LED display main bodies 3. Thus, the docking and locking of the LED display main body 3 are completed, ensuring the stability of the LED display during use;

[0047] In the initial state, the protective cover 9 and the second baffle 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 the previous processes such as transportation and installation, and ensuring the integrity and functionality of the heat dissipation component;

[0048] After the LED display main body 3 is locked, the push rod 6 moves a certain distance under the drive of the threaded rod 62. Since the push rod 6 is fixedly connected to the connecting rod 92, the connecting rod 92 will move the same distance accordingly. The connecting rod 92 is also connected to the protective cover 9. Therefore, the movement of the connecting rod 92 drives the protective cover 9 to slide in the second chute 93 opened on both sides of the bottom surface of the bottom plate 2. As the protective cover 9 slides, it no longer protects the heat dissipation fins 24 at the bottom, and the heat dissipation fins 24 at the bottom are exposed to the air, preparing for the heat dissipation when the LED display works, ensuring that the heat generated during the operation of the LED display can be dissipated in time, maintaining good working performance. When the LED display main body 3 is locked, the protective cover 9 slides to the lower part of the two heat dissipation fans 25 and forms a second surrounding structure with the first baffle 26, covering the two circular holes (the positions where the heat dissipation fans 25 are located) on the bottom plate 2. The bottom surface of the protective cover 9 is embedded with a dust-proof net, which can effectively prevent dust from entering the interior through the heat dissipation fans 25 and affecting the performance of the device. At the same time, the shielding strips 94 fixedly installed on both sides of the end of the protective cover 9 are attached to the bottom surface of the bottom plate 2, covering the second chute 93 to further prevent dust from entering, ensuring the cleanliness of the interior of the device and the normal operation of the heat dissipation fans 25 and the stable operation of the entire LED screen structure;

[0049] When the LED display main body 3 needs to be disassembled, the operator twists the threaded rod 62 to reverse it. The rotation of the threaded rod 62 causes the push rod 6 and the two pushing members 61 to move in the opposite direction. At this time, using the elastic reset function of the second spring 88, the second rack 84 returns to its initial state on the cross bar 8. The reset of the second rack 84 drives the first gear 82 meshing with it to reverse. The first gear 82 drives the rotating shaft 81 to reverse, and the rotating shaft 81 drives the second gear 83 to reverse. The reverse rotation of the second gear 83 causes the two first racks 72 meshing with it to move closer to each other. The two first racks 72 drive the two long rods 7 to move closer to each other, so that the lock blocks 71 on the long rods 7 withdraw from the lock holes 32, releasing the lock on the LED display main body 3. After the lock is released, using the elastic reset function of the first spring 56 on the first round rod 54, the cross plate 57 drives the sliding rod 51 to return to its initial position, and the docking components 5 on both sides return to their initial states. The dovetail blocks 4 on both sides move away from each other in the dovetail grooves 11, thereby driving the LED display main bodies 3 on both sides to move away from each other. Finally, unplug the plug 33 from the socket 22, and the LED display main body 3 can be removed. During the entire disassembly process, due to the initial design structure relationship, there is still a certain gap between adjacent LED display main bodies 3, which is convenient for the staff to disassemble the LED display main body 3. In addition, the two limit rods 14 fixedly installed in the frame 1 movably penetrate through the push rod 6 and the two long rods 7 to limit the movement of the push rod 6 and the long rods 7, ensuring that each component moves within the specified path, improving the stability and reliability of the structure. The entire disassembly process is orderly and convenient.

[0050] Working principle:

[0051] First step, in the initial state, the layout of the dovetail blocks 4 in the dovetail grooves 11 on both sides of the upper surface of the frame 1 is special. There is a certain gap between the dovetail blocks 4 on both sides and the dovetail blocks 4 fixedly installed in the middle. This design enables a certain interval to be reserved between the three LED display bodies 3 during the installation process, effectively preventing damage caused by mutual extrusion or friction between the LED display bodies 3. Drawing on the characteristics of the relatively independent and combinable components of the Rubik's Cube, it lays a foundation for subsequent installation and splicing. When installing the LED display body 3, first accurately insert the plugs 33 on each LED display body 3 into the sockets 22 on the circuit board 21 of the bottom plate 2 that are adapted to them to complete the circuit connection, ensuring that the LED display body 3 can be normally powered on and work. At the same time, using the principle of the mortise and tenon structure, insert the tenons 31 at the four corners of the bottom end of the LED display body 3 into the mortises 41 opened on the upper surface of the dovetail block 4 to achieve the preliminary fixation of the LED display body 3;

[0052] Second step, when the preliminary fixation of all three LED display bodies 3 is completed, the operator starts to twist the threaded rod 62. Since the threaded rod 62 is in a 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 pushing members 61 fixedly installed at both ends of the push rod 6 will move accordingly. Since the surface of the pushing member 61 that fits with the connecting member 52 is designed as an inclined surface, when the pushing member 61 moves, it will simultaneously apply a force to the two connecting members 52, prompting the two sliding rods 51 fixedly connected to the connecting members 52 to move closer to each other. The two ends of the sliding rod 51 are respectively fixed to the dovetail blocks 4 sliding in the dovetail grooves 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 grooves 11, thereby driving the LED display bodies 3 on both sides to move closer to the LED display body 3 in the middle. Finally, the three LED display bodies 3 are spliced to form a large LED display similar to the unfolded surface of the Rubik's Cube. The rubber strips provided on both sides of the LED display body 3 in the middle play a sealing and buffering role when the two side displays approach and fit together, further ensuring the connection stability and safety between the displays;

[0053] In the third step, when the pushing member 61 moves to be completely misaligned with the connecting member 52, that is, when the pushing member 61 slides to fit against the surface of the straight rod member 53, it indicates that the LED display bodies 3 on both sides have been completely and tightly sealed and fitted with the LED display body 3 in the middle, completing the docking process. At this time, continue to twist the threaded rod 62 to rotate, and the push rod 6 and the two pushing members 61 will continue to move. However, due to the change in the relative position between the pushing member 61 and the sliding rod 51, the two pushing members 61 will no longer push the two sliding rods 51 to move, but keep the two sliding rods 51 in their current positions. The dovetail blocks 4 and the LED display bodies 3 on both sides also no longer move closer to the middle, maintaining the stable state after docking. As the threaded rod 62 continues to rotate, the continuous movement of the push rod 6 will push the contact block 85. The contact block 85 is fixedly connected to the second rack 84, so the movement of the contact block 85 drives the second rack 84 to slide on the cross bar 8. Since the first gear 82 meshes with the second rack 84, the movement of the second rack 84 drives the first gear 82 to rotate. The first gear 82 is fixed on the rotating shaft 81, thereby driving the rotating shaft 81 to rotate. The two ends of the rotating shaft 81 are respectively provided with second gears 83. The second gears 83 mesh with the first racks 72 fixed to the opposite ends of the two long rods 7. And there is a height difference between the two first racks 72, ensuring that when the second gears 83 rotate, they can drive the two first racks 72 to move away from each other. The two first racks 72 are respectively fixed to the two long rods 7, so the two first racks 72 moving away from each other causes the two long rods 7 to move away from each other. Six locking blocks 71 are fixed on the long rods 7. As the long rods 7 move, the locking blocks 71 are respectively inserted into the locking holes 32 opened on the surface of the tenon 31 of the LED display body 3 through the through holes 13 and mortises 41 opened on the inner walls of both sides of the frame 1, realizing the simultaneous locking of the three LED display bodies 3. Thus, the docking and locking of the LED display body 3 are completed, ensuring the stability of the LED display during use;

[0054] In the fourth step, in the initial state, the protective cover 9 and the second baffle 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 the previous processes such as transportation and installation, and ensuring the integrity and functionality of the heat dissipation component;

[0055] Step 5: After the main body 3 of the LED display screen is locked, the push rod 6 moves a certain distance under the drive of the threaded rod 62. Since the push rod 6 is fixedly connected to the connecting rod 92, the connecting rod 92 will move the same distance accordingly. The connecting rod 92 is also connected to the protective cover 9. Therefore, the movement of the connecting rod 92 drives the protective cover 9 to slide in the second chute 93 opened on both sides of the bottom surface of the bottom plate 2. As the protective cover 9 slides, it no longer protects the heat dissipation fins 24 at the bottom, and the heat dissipation fins 24 at the bottom are exposed to the air, preparing for the heat dissipation when the LED display screen works, ensuring that the heat generated during the operation of the LED display screen can be dissipated in time, maintaining good working performance. When the main body 3 of the LED display screen is locked, the protective cover 9 slides to the lower part of the two heat dissipation fans 25 and forms a second surrounding structure with the first baffle 26, covering the two circular holes (the positions where the heat dissipation fans 25 are located) on the bottom plate 2. The bottom surface of the protective cover 9 is embedded with a dust-proof net, which can effectively prevent dust from entering the interior through the heat dissipation fans 25 and affecting the performance of the device. At the same time, the shielding strips 94 fixedly installed on both sides of the end of the protective cover 9 are attached to the bottom surface of the bottom plate 2, covering the second chute 93 to further prevent dust from entering, ensuring the cleanliness of the interior of the device and the normal operation of the heat dissipation fans 25 and the stable operation of the entire LED screen structure;

[0056] Step 6: When it is necessary to disassemble the main body 3 of the LED display screen, the operator twists the threaded rod 62 to reverse it. The rotation of the threaded rod 62 causes the push rod 6 and the two pushing members 61 to move in the opposite direction. At this time, by the elastic reset function of the second spring 88, the second rack 84 returns to its initial state on the cross bar 8. The reset of the second rack 84 drives the first gear 82 meshing with it to reverse. The first gear 82 drives the rotating shaft 81 to reverse. The rotating shaft 81 drives the second gear 83 to reverse. The reverse rotation of the second gear 83 causes the two first racks 72 meshing with it to move closer to each other. The two first racks 72 drive the two long rods 7 to move closer to each other, so that the lock blocks 71 on the long rods 7 withdraw from the lock holes 32, releasing the lock on the main body 3 of the LED display screen. After the lock is released, by the elastic reset function of the first spring 56 on the first round rod 54, the cross plate 57 drives the sliding rod 51 to return to its initial position, and the docking components 5 on both sides return to their initial states. The dovetail blocks 4 on both sides move away from each other in the dovetail grooves 11, thereby driving the main bodies 3 of the LED display screens on both sides to move away from each other. Finally, unplug the plug 33 from the socket 22, and the main body 3 of the LED display screen can be removed. During the entire disassembly process, due to the structural relationship of the initial design, there is still a certain gap between the adjacent main bodies 3 of the LED display screens, which is convenient for the staff to perform the disassembly operation on the main body 3 of the LED display screen. In addition, the two limiting rods 14 fixedly installed in the frame 1 pass through the push rod 6 and the two long rods 7 movably, limiting the movement of the push rod 6 and the long rods 7, ensuring that each component moves within the specified path, improving the stability and reliability of the structure, and making the entire disassembly process orderly and convenient.

[0057] Finally, it should be noted that: Obviously, the above embodiments are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A Rubik's Cube LED screen structure with a mortise and tenon structure, comprising a frame (1) and a bottom 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 arranged on both sides of the LED display screen body (3) located in the middle, each of the LED display screen bodies (3) is connected to a plug (33), four corners of the bottom end of each of the LED display screen bodies (3) are fixedly connected to tenons (31), and a lock hole (32) is provided on the surface of each tenon (31), the bottom plate (2) is installed at the bottom of the frame (1), a circuit board (21) is arranged on the bottom plate (2), and a socket (22) matched with the plug (33) is arranged on the circuit board (21), dovetail grooves (11) are arranged on both sides of the upper surface of the frame (1), three dovetail blocks (4) are arranged in each of the dovetail grooves (11), and a mortise (41) matched with the tenon (31) is provided on the upper surface of each of the dovetail blocks (4); 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), and the docking components (5) include a sliding rod (51), and the two ends of the sliding rod (51) are respectively fixedly connected to the dovetail blocks (4) sliding in the two dovetail grooves (11) for pushing the LED display screen bodies (3) on both sides toward the middle. The sliding rod (51) is fixedly connected with a connecting piece (52), and the connecting piece (52) is fixedly connected with a straight rod (53); Wherein, a locking assembly for locking the LED display screen body (3) is arranged in the frame (1), and the locking assembly comprises a push rod (6), a long rod (7) and a cross rod (8), and six locking blocks (71) are fixedly installed at two opposite ends of the two long rods (7), and each of the locking blocks (71) is movably inserted through the dovetail block (4) and inserted into the locking hole (32), so as to lock the LED display screen body (3).

2. The Rubik's Cube LED screen structure with a mortise and tenon structure according to claim 1, characterized in that: The two docking assemblies (5) are distributed along the length direction of the frame (1); a horizontal plate (57) is fixedly installed at the bottom end of the sliding rod (51); two round rods (54) are movably penetrated on the horizontal plate (57); each of the round rods (54) is fixedly connected to the inner wall of the frame (1); and a round block (55) is fixedly connected to the end of each of the round rods (54); Wherein, each of the round rods (54) is movably sleeved with a spring (56), and the transverse plate (57) is fixedly connected to the two round blocks (55) via two springs (56).

3. The magic cube LED screen structure of the mortise and tenon structure according to claim 2 is characterized by: The inner walls on both sides of the frame (1) are each provided with a group of through openings (12), both ends of the slide bar (51) are movably passed through the through openings (12), and the inner walls on both sides of the frame (1) are each provided with six through holes (13); Wherein, each locking block (71) is movably inserted into the through hole (13).

4. The magic cube LED screen structure of the mortise and tenon structure according to claim 1, characterized in that: Both ends of the push rod (6) are fixedly mounted with push members (61), the surface of each push member (61) is respectively fitted with the surface of each slide rod (51), and the fitted surfaces are all inclined, so as to push the two slide rods (51) to move closer to each other; A threaded rod (62) is threadedly connected to the push rod (6), the threaded rod (62) is rotatably mounted on the frame (1), a torsion block is fixedly connected to the free end of the threaded rod (62), two limit rods (14) are fixedly mounted in the frame (1), the two limit rods (14) are movably connected to the push rod (6) and the two long rods (7), and mounting plates (15) are provided at both ends of the frame (1).

5. The magic cube LED screen structure of the mortise and tenon structure according to claim 4, characterized in that: The cross bar (8) is fixedly installed in the frame (1), and a rotating shaft (81) is rotatably installed on the cross bar (8), and the two ends of the rotating shaft (81) are respectively fixedly installed with the rotating shaft (81) and the gear one (82), and the upper end of the cross bar (8) is slidably installed with a rack two (84), and the gear one (82) is meshed with the rack two (84). A sliding groove one is opened on the surface of the cross bar (8), and the bottom and upper ends of the rack two (84) are respectively fixedly connected with a slider (86) and a contact block (85), and the slider (86) is slidably installed in the sliding groove one, and a round rod two (87) is fixedly connected in the sliding groove one, and the round rod two (87) movably passes through the slider (86), and a spring two (88) is movably sleeved on the round rod two (87), and the slider (86) is fixedly connected to the inner wall of the sliding groove one through the spring two (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 movement, and the threaded rod (62) movably passes through the two long rods (7).

6. The magic cube LED screen structure of the mortise and tenon structure according to claim 5, characterized in that: The two opposite ends of the two long rods (7) are fixedly connected with racks 1 (72), there is a height difference between the two racks 1 (72), and the gear 2 (83) is meshed with the two racks 1 (72); Wherein, a avoidance hole (73) is provided on the surface of each of the long rods (7).

7. The magic cube LED screen structure with mortise and tenon structure according to claim 1, characterized in that: The bottom surface of the base plate (2) is provided with two circular holes, each of which is provided with a heat dissipation fan (25); a heat dissipation plate (23) is embedded on the base plate (2), and a group of heat dissipation fins (24) are fixedly mounted at both upper and lower ends of the heat dissipation plate (23); A protective cover (9) for protecting the bottom heat dissipation fins (24) is slidably mounted on the back end of the base plate (2), and a dustproof net is embedded in the bottom surface of the protective cover (9).

8. The magic cube LED screen structure of the mortise and tenon structure according to claim 7, characterized in that: Dovetail strips (91) are fixedly mounted on both sides of the upper end of the protective cover (9), and two slide grooves (93) are opened on both sides of the bottom surface of the base plate (2), and each of the dovetail strips (91) is slidably mounted in the two slide grooves (93), and a connecting rod (92) is fixedly mounted on the upper end of the two slide grooves (93), and the connecting rod (92) is fixedly connected to the push rod (6).

9. The magic cube LED screen structure of the mortise and tenon structure according to claim 8, characterized in that: Both sides of the end of the protective cover (9) are fixedly mounted with shielding strips (94), and the two shielding strips (94) are both in contact with the bottom surface of the bottom plate (2); one end of the protective cover (9) is designed to be open, and the bottom end of the bottom plate (2) is fixedly mounted with baffle plate 1 (26) and baffle plate 2 (27); Wherein, the baffle plate 1 (26) and the baffle plate 2 (27) are respectively located on both sides of the heat dissipation fins (24) at the bottom.

10. The magic cube LED screen structure with mortise and tenon structure according to claim 9, characterized in that: The protective cover (9) and baffle plate 2 (27) form a first enclosing structure to protect the heat dissipation fins (24) at the bottom, and the protective cover (9) slides to one side to form a second enclosing structure with baffle plate 1 (26) to cover the two circular holes.

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