LED display screen box

Abstract

The application is suitable for the technical field of LED device, and provides a LED display screen box. The LED display screen box comprises a box body and a box connecting assembly arranged on the side of the box body. The box connecting assembly comprises a positioning connecting part and a fixed connecting part. The positioning connecting part and the fixed connecting part each comprise a first mounting positioning part and a second mounting positioning part. The second mounting positioning part is arranged on the side of the second box body close to the first box body. The second mounting positioning part is provided with a second positioning hole. The position of the second positioning hole corresponds to the position of the first positioning hole. The positioning threaded part comprises a threaded column and a first positioning column coaxial with the threaded column. The threaded column is screwed in the threaded section. The first positioning column is arranged in the first positioning section and the second positioning hole. The side wall of the first positioning column is matched with the inner wall of the first positioning section and the inner wall of the second positioning hole, so that the first positioning column, the first positioning section and the second positioning hole are coaxial. The height of the box splicing surface is ensured to be consistent, and the step difference is effectively eliminated.

Description

Technical Field

[0001] This application belongs to the field of LED equipment technology, and more specifically, relates to an LED display cabinet. Background Technology

[0002] In the field of LED display technology, LED displays are typically composed of several cabinet units spliced ​​together. While this modular splicing design facilitates installation and maintenance, it inevitably creates step differences between the cabinet units. The presence of these step differences results in an uneven display image, especially noticeable in indoor close-up viewing scenarios, causing a significant visual abruptness and severely affecting the overall integrity and aesthetics of the display, thus reducing the user experience.

[0003] Currently, there are two main types of splicing solutions for LED display cabinet units on the market. One type uses specially designed connecting locks. This solution achieves splicing positioning through a customized precision mechanical locking structure, effectively controlling step differences and ensuring splicing stability. However, its component processing is complex, and its adaptability is limited, resulting in an expensive overall solution, increasing production costs and hindering the product's market competitiveness. The other type uses ordinary screws for fastening. While this solution has the advantages of low material costs and simple installation, relying solely on screw fastening lacks precise positioning capabilities, failing to guarantee the alignment of the cabinet splicing surfaces, resulting in noticeable visual imperfections and failing to meet the demands of high-quality displays. Utility Model Content

[0004] The purpose of this application is to provide an LED display cabinet to solve the problem of step differences that easily occur between adjacent cabinets in the prior art.

[0005] To achieve the above objectives, according to one aspect of this application, an LED display cabinet is provided. The LED display cabinet includes a cabinet body and a cabinet connecting assembly disposed on the side of the cabinet body. The cabinet connecting assembly is used for connecting two adjacent cabinet bodies, wherein the cabinet bodies of the two adjacent LED display cabinets are a first cabinet body and a second cabinet body, respectively. The cabinet connecting assembly includes a positioning connecting part and a fixing connecting part, both of which include:

[0006] The first mounting and positioning part is located on the side of the first box body close to the second box body. The first mounting and positioning part is provided with a first positioning hole, wherein the first positioning hole includes a threaded section and a first positioning section, and the threaded section and the first positioning section are coaxially arranged.

[0007] The second mounting and positioning part is located on the side of the second box body close to the first box body. The second mounting and positioning part is provided with a second positioning hole, the position of which corresponds to the position of the first positioning hole.

[0008] The positioning threaded part includes a threaded post and a first positioning post coaxial with the threaded post. The threaded post is screwed into the threaded section, and the first positioning post passes through the first positioning section and the second positioning hole. The side wall of the first positioning post is adapted to the inner wall of the first positioning section and the inner wall of the second positioning hole so that the first positioning post, the first positioning section and the second positioning hole are coaxial. The fixed connection part also includes an anti-loosening part, which is disposed between the positioning threaded part and the second mounting positioning part, and is used to apply radial pressure to the positioning threaded part.

[0009] Optionally, the positioning threaded portion of the fixed connection part further includes a second positioning post and a third positioning post coaxial with the first positioning post. The second positioning post is located between the first and third positioning posts, and the third positioning post is located at the end of the second mounting positioning part away from the first mounting positioning part. The outer wall of the third positioning post is adapted to the inner wall of the second positioning hole. Through the multi-level positioning structure, a comprehensive improvement in positioning accuracy, structural stability, and assembly efficiency is achieved.

[0010] Optionally, the diameter of the second positioning post is smaller than that of the first positioning post and also smaller than that of the third positioning post. This forms a stepped guide structure, reducing the contact area between the positioning post and the positioning hole, preventing parts from getting stuck during assembly, and making the installation of adjacent housings easier and more efficient.

[0011] Optionally, the housing connection assembly also includes an anti-loosening part, which is disposed between the second mounting and positioning part and the second positioning post, and is used to apply radial pressure to the second positioning post. By applying radial pressure to the second positioning post, the potential for loosening of the positioning threaded part under working conditions is effectively solved.

[0012] Optionally, the anti-loosening part includes an anti-loosening screw, and the second mounting and positioning part is provided with a threaded hole, which communicates with the second positioning hole. The anti-loosening screw is screwed into the threaded hole and can extend out to press against the side of the second positioning post. The anti-loosening fixation can be completed by simple screwing action, which is convenient for quick adjustment during on-site installation and also convenient for disassembly and maintenance during later maintenance.

[0013] Optionally, the diameter of the first positioning post is the same as the diameter of the third positioning post.

[0014] Optionally, the second positioning post is provided with an anti-loosening groove, and the anti-loosening screw can extend out and press against the inside of the anti-loosening groove.

[0015] Optionally, the anti-loosening groove is an annular groove that extends circumferentially along the second positioning post.

[0016] Optionally, the end of the first positioning post of the positioning connection part away from the first mounting positioning part is provided with an inner edge control hole.

[0017] Optionally, the end of the first positioning post away from the first mounting positioning part protrudes from the second positioning hole; the housing connection assembly also includes an elastic retaining spring, and an annular groove is provided on the side wall of the second positioning post. The annular groove is located outside the second positioning hole, and the elastic retaining spring is installed in the annular groove and abuts against the second mounting positioning part.

[0018] The beneficial effects of the housing connection assembly provided in this application are as follows: Compared with the prior art, this application uses a positioning connection part to position and connect two housing bodies, achieving rapid positioning, and uses a fixing connection part to fix and connect the two housing bodies. An anti-loosening part applies radial pressure to the positioning threaded part to prevent loosening, making the connection more secure. Simultaneously, through the coordinated arrangement of the first and second mounting positioning parts and the positioning threaded part included in both the positioning connection part and the fixing connection part, on the one hand, the coaxiality of the threaded section of the first positioning hole with the first positioning section, and the threaded post of the positioning threaded part with the first positioning post, ensures a more secure connection. In this design, the first positioning post passes through and fits tightly into the inner wall of the relevant hole segment during connection, forcing all components to be coaxial and ensuring that the height of the cabinet splicing surface is consistent, effectively eliminating step differences and improving the flatness of the display screen. On the other hand, the screwing of the threaded post provides basic fastening strength, and the radial limit of the first positioning post prevents the cabinet from misaligning, thus ensuring connection stability through a dual function. In addition, this structure uses conventional positioning holes and threaded posts in combination with positioning posts, making the parts simple and easy to process, and allowing the use of common materials. It significantly improves positioning accuracy without significantly increasing costs, achieving a balance between low cost and high performance, and enhancing the product's market competitiveness. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural diagram showing multiple LED display cabinets assembled together according to this application;

[0021] Figure 2 for Figure 1 Enlarged view of region A in the middle;

[0022] Figure 3 for Figure 1 Enlarged view of region B in the middle;

[0023] Figure 4 This is a cross-sectional schematic diagram of an embodiment of the fixed connection portion of this application;

[0024] Figure 5This is a schematic diagram of the positioning thread portion in an embodiment of the fixed connection portion of this application;

[0025] Figure 6 This is a cross-sectional schematic diagram of an embodiment of the positioning connection portion of this application;

[0026] Figure 7 for Figure 6 A schematic diagram of the positioning thread portion in the embodiment;

[0027] The details of the reference numerals used in the above figures are as follows:

[0028] 1. Box body; 2. Positioning connection part; 3. Fixing connection part;

[0029] 10. First mounting and positioning part; 11. First positioning hole; 111. Threaded section; 112. First positioning section;

[0030] 20. Second mounting and positioning part; 22. Second positioning hole;

[0031] 30. Locating threaded part; 31. Threaded post; 32. First locating post; 321. Inner edge control hole; 33. Second locating post; 34. Third locating post;

[0032] 40. Anti-loosening section. Detailed Implementation

[0033] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0034] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly or indirectly on that other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to that other element. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0037] As described in the background section, LED displays are typically composed of several cabinet units. While this modular design facilitates installation and maintenance, it inevitably creates stepped differences between the cabinet units. These stepped differences result in an uneven display image, especially noticeable in close-up indoor viewing scenarios, significantly impacting the overall integrity and aesthetics of the display and reducing the user experience.

[0038] Currently, there are two main types of splicing solutions for LED display cabinet units on the market. One type uses specially designed connecting locks. This solution achieves splicing positioning through a customized precision mechanical locking structure, effectively controlling step differences and ensuring splicing stability. However, its component processing is complex, and its adaptability is limited, resulting in an expensive overall solution, increasing production costs and hindering the product's market competitiveness. The other type uses ordinary screws for fastening. While this solution has the advantages of low material costs and simple installation, relying solely on screw fastening lacks precise positioning capabilities, failing to guarantee the alignment of the cabinet splicing surfaces, resulting in noticeable visual imperfections and failing to meet the demands of high-quality displays.

[0039] To solve the above problem, see Figures 1 to 7As shown, the LED display cabinet in this embodiment includes a cabinet body 1 and a cabinet connecting assembly disposed on the side of the cabinet body 1. The cabinet connecting assembly is used for connecting two adjacent cabinet bodies 1, wherein the cabinet bodies 1 of the two adjacent LED display cabinets are a first cabinet body and a second cabinet body, respectively. The cabinet connecting assembly includes a positioning connecting part 2 and a fixing connecting part 3. Both the positioning connecting part 2 and the fixing connecting part 3 include: a first mounting positioning part 10, a second mounting positioning part 20, and a positioning thread part 30. The first mounting positioning part 10 is disposed on the side of the first cabinet body close to the second cabinet body. The first mounting positioning part 10 is provided with a first positioning hole 11, wherein the first positioning hole 11 includes a threaded section 111 and a first positioning section 111. Positioning section 112 and threaded section 111 are coaxially arranged with the first positioning section 112. The second mounting positioning part 20 is located on the side of the second housing body near the first housing body, and has a second positioning hole 22, the position of which corresponds to the position of the first positioning hole 11. The positioning threaded part 30 includes a threaded post 31 and a first positioning post 32 coaxial with the threaded post 31. The threaded post 31 is screwed onto the threaded section 111, and the first positioning post 32 passes through the first positioning section 112 and the second positioning hole 22. The sidewall of the first positioning post 32 is adapted to the inner wall of the first positioning section 112 and the inner wall of the second positioning hole 22, so that the first positioning post 32, the first positioning section 112, and the second positioning hole 22 are coaxial. The fixed connection part 3 also includes an anti-loosening part 40, which is located between the positioning threaded part 30 and the second mounting positioning part 20, and is used to apply radial pressure to the positioning threaded part 30.

[0040] It should be noted that the first and second cabinet bodies refer to the cabinet bodies of two adjacent LED display cabinets to be spliced ​​together. This is a distinguishing name used for ease of description (not limited to specific cabinets).

[0041] LED display devices are typically assembled from multiple modular LED display cabinet units, with the first / second cabinet representing any two adjacent units. The first mounting and positioning part 10 and the second mounting and positioning part 20 are functional structural components located on the side of the cabinet body, used to install the positioning threaded part 30 and to achieve positioning and fastening between the cabinets.

[0042] The first mounting and positioning part 10 is located on the splicing side of the first box body and is provided with a first positioning hole 11; the second mounting and positioning part 20 is located on the splicing side of the second box body and is provided with a second positioning hole 22 corresponding to the first positioning hole 11. When the two are connected by the positioning thread part 30, they form a cooperative positioning structure.

[0043] The first positioning hole 11 is a composite hole structure formed in the first mounting and positioning part 10, consisting of a threaded section 111 and a first positioning section 112 arranged coaxially. The threaded section 111 has internal threads machined inside the hole for engaging with the threaded post 31 of the positioning threaded part 30 to provide a fastening force; the first positioning section 112 is a smooth hole section (without threads) adjacent to the threaded section 111, and the hole diameter is adapted to the outer diameter of the first positioning post 32 of the positioning threaded part 30 for axial positioning.

[0044] The aforementioned LED display cabinet utilizes the positioning connection part 2 to position and connect the two cabinet bodies 1, achieving rapid positioning. The two cabinet bodies 1 are then fixedly connected via the fixing connection part 3. The anti-loosening part 40 applies radial pressure to the positioning thread part 30 to prevent loosening, making the connection more secure. Simultaneously, through the coordinated arrangement of the first and second mounting positioning parts 20 and the positioning thread part 30, which are included in both the positioning connection part 2 and the fixing connection part 3, the coaxiality of the threaded section 111 of the first positioning hole 11 and the first positioning section 112, and the threaded post 31 of the positioning thread part 30 and the first positioning post 32, ensures a secure connection. In this design, the first positioning post 32 passes through and fits tightly into the inner wall of the relevant hole segment during connection, forcing all components to be coaxial, ensuring consistent height of the cabinet splicing surface, effectively eliminating step differences, and improving the flatness of the display screen. On the other hand, the screwing of the threaded post 31 provides basic fastening strength, and the radial limit of the first positioning post 32 prevents cabinet misalignment, thus ensuring connection stability through a dual function. In addition, this structure uses positioning holes and threaded posts 31 in conjunction with positioning posts, making the parts simple and easy to process, and allowing the use of common materials. It significantly improves positioning accuracy without significantly increasing costs, achieving a balance between low cost and high performance, and enhancing the product's market competitiveness.

[0045] See Figure 4 and Figure 5 As shown, in this embodiment, the positioning threaded portion 30 of the fixed connection portion 3 further includes a second positioning post 33 and a third positioning post 34 coaxial with the first positioning post 32. The second positioning post 33 is located between the first positioning post 32 and the third positioning post 34, and the third positioning post 34 is located at the end of the second mounting positioning portion 20 away from the first mounting positioning portion 10. The outer wall of the third positioning post 34 is adapted to the inner wall of the second positioning hole 22. In this embodiment, the positioning threaded portion 30 of the fixed connection portion 3 is equipped with a second positioning post 33 and a third positioning post 34 coaxial with the first positioning post 32. Through the multi-level positioning structure, the positioning accuracy, structural stability, and assembly efficiency are comprehensively improved. The second positioning post 33 and the third positioning post 34 are adapted to the inner walls of different areas of the second positioning hole 22, forming double constraints at different positions, further eliminating splicing segment differences, and effectively improving the continuity of the image. The cooperation between the third positioning post 34 and the inner wall of the second positioning hole 22 disperses the stress of traditional single-point fastening to a larger contact area, reduces the risk of material fatigue, and significantly enhances the structural vibration resistance.

[0046] In this embodiment, the diameter of the second positioning post 33 is smaller than that of the first positioning post 32 and the third positioning post 34. The smaller diameter of the second positioning post 33 compared to the first and third positioning posts 32 creates a stepped guide structure, reducing the contact area between the positioning posts and the positioning holes. This avoids component jamming during assembly, making the installation of adjacent housings easier and more efficient. This not only improves the efficiency of large-scale production and on-site installation but also reduces the labor intensity of operators. Furthermore, in some preferred embodiments, the first positioning post 32, the second positioning post 33, and the third positioning post are smoothly transitioned by chamfers. The inner walls of the first positioning section 112 of the first positioning hole 11 and the second positioning hole 22 are mirror-polished, and a low-friction coefficient wear-resistant coating is applied to the sidewall of the first positioning post 32, further reducing friction and facilitating installation.

[0047] In this embodiment, the anti-loosening part 40 is disposed between the second mounting and positioning part 20 and the second positioning post 33, and is used to apply radial pressure to the second positioning post 33. The anti-loosening part 40, disposed between the second mounting and positioning part 20 and the second positioning post 33, effectively solves the potential loosening of the positioning threaded part 30 of the fixed connection part 3 during operation by applying radial pressure to the second positioning post 33. In actual use, LED displays often experience loosening of connecting components due to environmental vibration, thermal expansion and contraction, etc. The elastic pressure of the anti-loosening part 40 can continuously and stably constrain the positioning threaded part 30, ensuring that all components are always in a tight fit, avoiding problems such as increased splicing gaps and uneven screen display caused by loosening. At the same time, without requiring additional complex fastening processes or special tools, and without affecting the original structure's low-friction and high-efficiency assembly advantages, it further improves the long-term stability and reliability of the installation structure, reduces equipment maintenance frequency and operating costs, and allows the LED display to maintain accurate splicing and good display effects during long-term operation.

[0048] The anti-loosening part 40 in this embodiment includes an anti-loosening screw. A threaded hole is provided on the second mounting and positioning part 20, communicating with the second positioning hole 22. The anti-loosening screw is screwed into the threaded hole and can extend to press against the side of the second positioning post 33. In this embodiment, the anti-loosening part 40 uses an anti-loosening screw. By providing a threaded hole communicating with the second positioning hole 22 on the second mounting and positioning part 20, the anti-loosening screw can press against the side of the second positioning post 33 after being screwed on, thereby locking the positioning threaded part 30. The mechanical pressure when the screw is tightened forms a radial constraint, effectively resisting the loosening of the positioning threaded part 30 caused by vibration, thermal expansion and contraction, etc., during the operation of the display screen, ensuring that the splicing surface of the cabinet maintains precise alignment over a long period. Anti-loosening fixation can be completed with a simple screwing action, facilitating quick adjustment during on-site installation and convenient disassembly and maintenance during later maintenance.

[0049] Specifically, the anti-loosening screw acts directly on the second locating post 33 through the threaded joint, forming a controllable radial pressure. This pressure is perpendicular to the axial preload of the locating thread 30, effectively suppressing the tendency of the threads to loosen due to vibration or thermal expansion and contraction, ensuring that the locating thread 30 maintains a stable connection. Utilizing the stepped structure characteristic that the diameter of the second locating post 33 is smaller than that of the first and third locating posts 34, interference between the anti-loosening screw and other components is avoided, ensuring that the locking process does not disrupt the established coaxial positioning relationship. Compared to traditional elastic washers or chemical locking methods, the locking force of the anti-loosening screw can be precisely controlled with a torque wrench, enabling standardized installation. Furthermore, during later maintenance, the anti-loosening screw can be easily disassembled for component replacement without damaging the original structure, significantly reducing maintenance costs.

[0050] In this embodiment, the diameters of the first positioning post 32 and the third positioning post 34 may be the same or different, but preferably they are the same. When they are the same, on the one hand, it enables high standardization of parts in mold development and manufacturing, significantly reducing production costs. On the other hand, the consistent diameter allows the positioning post and the corresponding positioning hole to form a symmetrical and uniform fit, resulting in more balanced force during installation and effectively avoiding local stress concentration caused by diameter differences, thus facilitating installation. Simultaneously, positioning posts of the same diameter enable more precise coaxial positioning, performing better in suppressing splicing step differences and ensuring the flatness of the displayed image.

[0051] In this embodiment, the second positioning post 33 is provided with an anti-loosening groove, and the anti-loosening screw can extend out and press against the inside of the anti-loosening groove. The anti-loosening groove provides a precise pressing and positioning area for the anti-loosening screw. Compared with directly pressing against a smooth cylindrical surface, the contact between the screw tip and the groove can form a stronger mechanical engagement, significantly reducing the risk of screw loosening or displacement, and effectively improving the connection reliability of the positioning threaded part 30 under complex working conditions such as vibration and impact.

[0052] In this embodiment, the anti-loosening groove is an annular groove extending circumferentially along the second positioning post 33. In this embodiment, the anti-loosening groove is configured as an annular structure extending circumferentially along the second positioning post 33. Combined with the screw-on installation characteristics of the positioning thread 30, the annular groove can accommodate any angle after the positioning thread 30 is screwed in place, completely eliminating the limitation of traditional anti-loosening structures on the component installation angle. Operators do not need to deliberately adjust the relative position of the anti-loosening screw and the positioning post; they only need to ensure that the anti-loosening screw is screwed into the pressing groove to achieve effective anti-loosening, significantly improving assembly error tolerance and installation efficiency. The full circumferential structure ensures that the anti-loosening screw can form a stable contact and force relationship with the groove when pressed at any angle, ensuring that the anti-loosening pressure is evenly distributed on the second positioning post 33, effectively avoiding local stress concentration or anti-loosening failure caused by installation angle deviation.

[0053] See Figure 6 and Figure 7 As shown, in this embodiment, the positioning connection part 2 mainly serves as a positioning component during initial installation. Unlike the fixed connection part 3, which includes a second positioning post 33, a third positioning post 34, and an anti-loosening part 40, the positioning connection part 2 only has a first positioning post 32. In this embodiment, the end of the first positioning post 32 of the positioning connection part 2 away from the first installation positioning part 10 is provided with an inner edge control hole 321. The inner edge control hole 321 is compatible with standard tools such as Allen wrenches. By precisely controlling the torque, it can effectively prevent positioning deviations and loose connections caused by over-tightening or insufficient tightening force, ensuring a tight fit between the first positioning post 32 and the corresponding positioning hole, maintaining high precision in the cabinet splicing. Simultaneously, this hole position facilitates installation and disassembly operations within a limited space without adding excessive structural complexity. Precise control of the positioning post's installation status can be achieved simply through the hole position setting, simplifying the overall structure while ensuring the stability and display effect of the LED display splicing.

[0054] In this application, the first positioning post 32 of the positioning connection part 2 protrudes from the second positioning hole 22 at one end away from the first mounting positioning part 10. The positioning connection part 2 also includes an elastic retaining spring. An annular groove is provided on the side wall of the second positioning post 33, located outside the second positioning hole 22. The elastic retaining spring is installed in the annular groove and abuts against the second mounting positioning part 20. The elastic retaining spring is installed in the annular groove on the side wall of the second positioning post 33 and abuts against the second mounting positioning part 20. Without relying on complex threaded fastening or additional anti-loosening structures, the axial pressure generated by elastic deformation firmly locks the positioning threaded part 30, preventing it from loosening under conditions such as vibration and thermal expansion and contraction, and ensuring the long-term stability of the housing connection. The combination structure of the annular groove and the elastic retaining spring is simple and easy to manufacture. Compared with the traditional 40 anti-loosening parts, it significantly reduces production costs and is convenient to install.

[0055] The positioning threaded part 30 of this application adopts a cold heading process. Cold heading involves applying pressure to a metal blank at room temperature to plastically deform it. Compared to traditional machining, this process has a high material utilization rate, significantly reduces raw material consumption, and effectively controls production costs. During cold heading, the metal fiber streamlines are distributed along the part's contour, significantly improving the strength and toughness of the positioning threaded part 30. This enhances its fatigue resistance under long-term vibration and impact conditions, ensuring the long-term stability of the LED display cabinet connection. Simultaneously, the cold heading process can form complex structures such as the threaded post 31 and positioning post in one step, reducing machining steps. The high degree of automation in cold heading results in good product dimensional consistency, effectively avoiding positioning deviations caused by differences in part precision. This ensures high precision in cabinet splicing and improves the flatness and display effect of the LED display screen.

[0056] The positioning connection part 2 of the LED display cabinet in this application is located in a position on the cabinet body 1 that facilitates quick positioning and connection during initial assembly, such as the corner area of ​​the cabinet body 1. The fixing connection part 3 can also be located in the corner area or other areas.

[0057] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An LED display screen cabinet, characterized in that, The LED display cabinet includes a cabinet body and a cabinet connecting assembly disposed on the side of the cabinet body. The cabinet connecting assembly is used for connecting the two cabinet bodies of two adjacent LED display cabinets, wherein the cabinet bodies of the two adjacent LED display cabinets are a first cabinet body and a second cabinet body, respectively. The cabinet connecting assembly includes a positioning connecting part and a fixing connecting part, both of which include: A first mounting and positioning part is disposed on the side of the first box body close to the second box body. The first mounting and positioning part is provided with a first positioning hole, wherein the first positioning hole includes a threaded section and a first positioning section, and the threaded section and the first positioning section are coaxially arranged. The second mounting and positioning part is disposed on the side of the second box body close to the first box body. The second mounting and positioning part is provided with a second positioning hole, the position of which corresponds to the position of the first positioning hole. The positioning threaded part includes a threaded post and a first positioning post coaxial with the threaded post. The threaded post is screwed onto the threaded section. The first positioning post passes through the first positioning section and the second positioning hole. The side wall of the first positioning post is adapted to the inner wall of the first positioning section and the inner wall of the second positioning hole so that the first positioning post, the first positioning section and the second positioning hole are coaxial. The fixed connection part further includes an anti-loosening part, which is disposed between the positioning thread part and the second mounting positioning part, and is used to apply radial pressure to the positioning thread part.

2. The LED display screen cabinet of claim 1, wherein, The positioning thread portion of the fixed connection portion further includes a second positioning post and a third positioning post coaxial with the first positioning post. The second positioning post is located between the first positioning post and the third positioning post. The third positioning post is located at the end of the second mounting positioning portion away from the first mounting positioning portion. The outer wall of the third positioning post is adapted to the inner wall of the second positioning hole.

3. The LED display screen cabinet of claim 2, wherein, The diameter of the second positioning post is smaller than that of the first positioning post and smaller than that of the third positioning post.

4. The LED display screen cabinet of claim 2, wherein, The anti-loosening part is disposed between the second mounting and positioning part and the second positioning post, and is used to apply radial pressure to the second positioning post.

5. The LED display screen cabinet according to claim 4, characterized in that, The anti-loosening part includes an anti-loosening screw. The second mounting and positioning part is provided with a threaded hole, which communicates with the second positioning hole. The anti-loosening screw is screwed into the threaded hole and can extend out to press against the side of the second positioning post.

6. The LED display screen cabinet according to any one of claims 2 to 5, characterized in that, The diameter of the first positioning post is the same as the diameter of the third positioning post.

7. The LED display screen cabinet according to claim 5, characterized in that, The second positioning post is provided with an anti-loosening groove, and the anti-loosening screw can extend out and press against the inside of the anti-loosening groove.

8. The LED display screen cabinet according to claim 7, characterized in that, The anti-loosening groove is an annular groove that extends circumferentially along the second positioning post.

9. The LED display screen cabinet of claim 1, wherein, The first positioning post of the positioning connection part has an inner edge control hole at the end away from the first mounting positioning part.

10. The LED display screen cabinet of claim 8, wherein, The end of the first positioning post away from the first mounting and positioning part protrudes from the second positioning hole; the housing connection assembly also includes an elastic retaining spring, and an annular groove is provided on the side wall of the second positioning post. The annular groove is located outside the second positioning hole, and the elastic retaining spring is installed in the annular groove and abuts against the second mounting and positioning part.

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