A tiled electronic display

Abstract

The application discloses a spliced electronic display screen, which comprises a plurality of display screen bodies, a locking ring is arranged on the display screen body, a rack and a driving mechanism for switching the rack between an unlocking state and a locking state are arranged in the display screen body, a push block is fixedly arranged at one end of the rack close to the locking ring, a lock tongue mechanism is fixedly arranged at the other end of the rack, the lock tongue mechanism comprises a receiving tube, a lock tongue and an elastic piece, the receiving tube is fixed on the rack, the lock tongue is located in the inner cavity of the receiving tube and is in sliding connection with the inner wall of the receiving tube, in the unlocking state, the rack drives the push block to push the adjacent side lock tongue to compress the elastic piece, so that the lock tongue is withdrawn from the locking hole of the locking ring, in the locking state, the lock tongue on the adjacent side display screen body is inserted into the locking ring by the push of the elastic piece, the lock tongue mechanism extends out of the display screen body, so that the lock tongue is inserted into the locking hole of the locking ring of the adjacent side display screen body, and the quick disassembly of any display screen body can be realized.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular, to a splicing electronic display screen. Background Technology

[0002] Display screens are devices used to display various information such as text, images, and videos. They are widely used in commercial media, cultural performances, sports venues, information dissemination, news releases, and securities trading, and can meet the needs of different environments.

[0003] In order to increase the size of the display screen, splicing display screens are often used to assemble the screens. By freely combining the splicing screens, a screen suitable for the size requirements can be obtained.

[0004] Currently, all video wall units have clips at their edges for fastening. During installation, two people are required: one adjusts the angle of the video wall to align adjacent units, while the other uses the clips to fasten the adjacent units together, completing the installation of a single video wall unit. This installation method requires multiple people, reducing the efficiency of video wall installation.

[0005] To facilitate the installation of video wall panels, they are typically installed using mortise and tenon joints or sliding rails. One end of the panel is inserted into the rail, and the panel is pushed into the corresponding position. The mortise and tenon joints are then used to secure adjacent panels. While this allows for rapid assembly, if a display screen in the middle of the rail malfunctions, multiple displays need to be removed to access the faulty screen for repair. This makes it inconvenient to disassemble or install individual display units later on.

[0006] Therefore, how to design a splicing display screen that is easy to disassemble or install has become a technical problem that urgently needs to be solved by people in this field. Summary of the Invention

[0007] In order to solve at least one of the technical problems mentioned in the background art, the present invention aims to provide a splicing electronic display screen that solves the problem that splicing display screens are inconvenient to disassemble or install.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A splicing electronic display screen includes several display screen bodies arranged in an array. Each display screen body has a first extension flush with its front side. A rearwardly extending locking ring is fixed to the rear wall of the first extension. A rack and a drive mechanism for switching the rack between unlocked and locked states are slidably connected inside each display screen body. A push block is fixed to one end of the rack near the locking ring, and a locking tongue mechanism is fixed to the other end of the rack. The locking tongue mechanism includes a storage tube, a locking tongue, and an elastic element. The storage tube is fixed to the rack and extends along the length of the rack. The locking tongue is located in the inner cavity of the storage tube and is slidably connected to the inner wall of the storage tube. One end of the elastic element is fixedly connected to the locking tongue, and the other end is fixedly connected to the inner wall of the storage tube. In the unlocked state, the rack drives the push block to push the locking tongue on the adjacent side of the display body to compress the elastic element, causing the locking tongue to exit from the lock hole of the lock ring. The locking tongue mechanism is stored in the display body. In the locked state, the locking tongue on the adjacent side of the display body is pushed into the lock ring by the elastic element. The locking tongue mechanism extends out of the display body so that the locking tongue is inserted into the lock hole of the lock ring of the adjacent side of the display body.

[0010] Furthermore, a positioning block is fixedly provided on the rear wall of the display screen body. The positioning block has a positioning hole with an opening facing downwards. The rear wall of the display screen body is also provided with a locking pin structure that switches between a first state and a second state. The locking pin structure includes a positioning seat fixed on the display screen body and a locking pin that slides along the height direction of the display screen body. In the first state, the top end of the locking pin is disengaged from the positioning hole of the positioning block. In the second state, the top end of the locking pin is inserted into the positioning hole of the upper display screen body positioning block.

[0011] Furthermore, the locking pin structure also includes two limiting plates fixed on the positioning seat and extending rearward to form sliding grooves. The sidewalls of the limiting plates are provided with a first limiting groove and a second limiting groove in sequence along the height direction of the display screen body. The locking pin is L-shaped and includes a locking part that slides along the sliding groove and a limiting part that extends to one side. In the first state, the limiting part is engaged in the first limiting groove, and in the second state, the limiting part is engaged in the second limiting groove.

[0012] Furthermore, a limiting baffle is provided above the second limiting groove to connect the two limiting plates, and the locking pin is inserted into the annular groove formed by the limiting baffle and the two limiting plates.

[0013] Furthermore, the display screen body is provided with a second chamber, and the rack is installed in the second chamber and slidably connected to the side wall of the second chamber.

[0014] Furthermore, the display screen body has a first chamber communicating with the second chamber, and the driving mechanism includes a rotating shaft rotatably installed inside the first chamber and extending one end out of the display screen body. A gear is fixedly installed on the rotating shaft, and the gear meshes with the rack.

[0015] Furthermore, a handle is fixedly connected to the end of the rotating shaft extending from the display screen body.

[0016] Furthermore, the rear wall of the display screen body is provided with an arc-shaped guide groove coaxial with the rotation axis, and a limit block is slidably connected in the guide groove, and the limit block is fixedly connected to the handle.

[0017] Furthermore, the side wall of the display body away from the locking ring is provided with a third chamber that communicates with the second chamber. The third chamber is provided with a first positioning plate fixed on the rack, and the storage tube is fixed on the first positioning plate.

[0018] Furthermore, the latch has a pushing slope on the side wall near the front of the display screen body.

[0019] Compared with the prior art, the beneficial effects of the present invention are: the present invention uses a drive mechanism to drive the rack to change position, thereby switching the display screen between the unlocked state and the locked state. When the display screen is aligned with the adjacent display screen, the display screen to be installed is adjusted from the unlocked state to the locked state. At this time, the push block disengages from the lock hole of the lock ring, and the locking tongue on the display screen body on the adjacent side is inserted into the lock ring of the display screen to be installed, thereby realizing the installation of the display screen.

[0020] When it is necessary to remove one of the displays, the drive mechanism moves the rack, which in turn drives the locking tongue on the rack to retract into the display body. At this time, the locking tongue is unlocked from the locking ring on the adjacent display body. Simultaneously, the rack drives the push block to insert into the lock hole of the locking ring on the display to be removed, pushing the locking tongue on the adjacent display body to compress the elastic element and move it into the storage tube. This causes the locking tongue on the adjacent display body to exit from the lock hole of the locking ring, further unlocking the display and facilitating the removal of any spliced ​​display.

[0021] After the display screen body to be disassembled is removed, the locking tongue on the adjacent display screen body is pushed outward under the action of the elastic element, which can realize the reset of the locking tongue and make it convenient to lock the next display screen body.

[0022] By providing a first extension on the side wall of the display screen body, flush with the front side of the display screen body, and installing a locking ring on the rear wall of the first extension, the angle of the display screen body can be easily adjusted during installation. This prevents the display screen body from colliding with adjacent display screen bodies during rotation, reduces the gap between adjacent display screen bodies after installation, and improves the aesthetics of the spliced ​​display screen. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the invention from a first angle;

[0024] Figure 2 This is a schematic diagram of the second angle of the present invention;

[0025] Figure 3 This is a first-angle sectional view of the present invention;

[0026] Figure 4 This is a second sectional view of the present invention;

[0027] Figure 5 A cross-sectional view of the electronic display screen in the locked state;

[0028] Figure 6 A cross-sectional view of the electronic display screen in the unlocked state;

[0029] Figure 7 A schematic diagram of the structure after the electronic display screen is installed;

[0030] Figure 8 This is a schematic diagram of the installation of the electronic display screen;

[0031] Figure 9 This is a schematic diagram of the locking pin structure of the present invention.

[0032] In the diagram: 1. Display screen body; 11. First extension; 12. Second extension; 13. First chamber; 14. Second chamber; 15. Third chamber; 16. Fourth chamber; 17. Guide groove; 18. Locking ring; 21. Gear; 22. Rack; 23. First positioning plate; 24. Second positioning plate; 25. Push block; 26. Storage tube; 261. Limiting stop; 27. Compression spring; 28. Locking tongue; 281. Pushing slope; 31. Rotating shaft; 32. Handle; 321. Limiting block; 41. Positioning block; 411. Positioning hole; 42. Locking pin structure; 421. Positioning seat; 422. Limiting plate; 4221. First limiting groove; 4222. Second limiting groove; 423. Locking pin; 4231. Locking part; 4232. Limiting part; 424. Limiting baffle. Detailed Implementation

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] This embodiment provides a splicing electronic display screen that enables rapid assembly and disassembly of the display screen while reducing the labor intensity of the installation process.

[0035] Currently, to increase the overall size of the screen, it is necessary to assemble several display units. A schematic diagram of the assembled screen is shown below. Figure 7 As shown, in this embodiment, Figure 7 It is composed of nine spliced ​​display screen units. If the display screen unit in the center fails and needs to be disassembled, it is often necessary to remove multiple display screen units to remove the faulty display screen unit, which is a lot of work.

[0036] When assembling existing displays, the displays are usually assembled from the back of the entire screen. The condition of the front of the screen is not easily noticed by the installers. After installation, the front of the screen may be uneven due to installation errors, which will affect the display effect.

[0037] In this embodiment, structural improvements have been made to the display unit of the screen, such as... Figure 1 and Figure 2 As shown, the screen includes several display screen bodies 1 arranged in an array. A first extension 11, flush with the front side of the display screen body 1, is fixedly provided on the right side wall of the display screen body 1, and a second extension 12, flush with the rear wall of the display screen body 1, is fixedly provided on the left side wall of the display screen body 1. The cross-section of the entire display screen body 1 can be referenced. Figure 2 and Figure 5 As shown, during installation, the cross-section formed by the first extension 11 and the second extension 12 of the display body 1 is "U" shaped.

[0038] The advantage of this structure is that, since the size of the display body 1 is fixed, in order to prevent a large gap between two adjacent display bodies 1 after installation, the size of the screen notch after disassembly must be consistent with the size of a single display body 1. If the display body 1 is a regular cuboid structure, then when installing the display body 1, it is necessary to initially align the display body 1 and then slowly push the display body 1 into the screen notch, which makes the installation process more complicated.

[0039] In this embodiment, a second extension 12 and a first extension 11 are respectively provided on the left and right sides of the display screen body 1, such as... Figure 2 As shown, there is a notch at the corner of the display body 1. When installing the display body 1, the display body 1 can be installed by rotating it. Because there is a notch in the display body 1 in this solution, the display body 1 can be perfectly fitted into the notch of the screen. At this time, it can also ensure that the gap between two adjacent display bodies 1 is within a certain range and will not affect the splicing effect of the screen.

[0040] When the display body 1 in the middle of the screen is replaced, such as Figure 8 As shown, the structure of the display screen body 1 has been improved to facilitate installation and to enable preliminary positioning of the display screen body 1 during installation, thereby improving the installation accuracy of the display screen body 1. In this embodiment, as shown... Figure 1 and Figure 2 As shown, a positioning block 41 is fixedly provided on the rear wall of the display screen body 1, such as... Figure 3 As shown, the bottom wall of the positioning block 41 has a downward-facing positioning hole 411, and the display screen body 1 is fixedly provided with a positioning seat 421 located directly above the positioning block 41. A locking pin 423, which switches between a first state and a second state, is slidably connected to the positioning seat 421. In the first state, as shown... Figure 1 and Figure 3 As shown, the top of the locking pin 423 is lower than the top wall of the display screen body 1, and the top of the locking pin 423 is inserted into the positioning hole 411. In the second state, as... Figure 7 and Figure 8 As shown, the top of the locking pin 423 extends beyond the display body 1 and is inserted into the positioning hole 411 of the positioning block 41 on the upper display body 1.

[0041] It is worth noting that the purpose of restricting the top of the locking pin 423 below the top wall of the display body 1 in the first state is to prevent the locking pin 423 from colliding with the upper or lower side of the display body 1 during the initial positioning of the display body 1, thereby avoiding damage to the display body 1 during the initial installation process.

[0042] The initial positioning and installation process of the display screen body 1 is as follows: Figure 8As shown, the installation of the display screen body 1 in the center of the nine-square grid is carried out in three steps. First, the display screen body 1 to be installed is erected, with the right side of the display screen body 1 extending forward through the screen, and the bottom wall of the display screen body 1 is placed on the lower display screen body 1. Second, the position of the display screen body 1 to be installed is adjusted so that the positioning block 41 on the display screen body 1 to be installed is aligned with the locking pin 423 on the lower display screen body 1. Then, the locking pin 423 on the lower display screen body 1 is inserted into the positioning hole 411 of the positioning block 41 of the display screen body 1 to be installed. Then, the locking pin 423 on the display screen body 1 to be installed is adjusted to the second state and inserted into the positioning hole 411 of the positioning block 41 of the upper display screen body 1. At this time, the initial positioning of the display screen body 1 can be achieved. Third, the display screen body 1 to be installed is rotated clockwise around the locking pin 423 and adjusted so that the display screen body 1 to be installed is on the same plane as the other display screen bodies 1, thus achieving the initial installation of the display screen body 1.

[0043] In the above-mentioned process, the installation of the display screen body 1 does not require a single person to adjust its position. In addition, in this solution, the display screen body 1 to be installed only needs to be initially positioned, and then the initial installation of the display screen body 1 can be achieved by rotation. There is no need to support the display screen body 1 for a long time, which reduces the labor intensity of the operators.

[0044] In this embodiment, in order to enable the locking pin 423 to switch between the first state and the second state, as follows: Figure 9 As shown, the positioning base 421 is fixedly provided with two limiting plates 422 extending to the rear side of the display screen body 1. The two limiting plates 422 are parallel to each other and are set along the height direction of the display screen body 1. A sliding groove is formed between the two limiting plates 422 for the installation of the locking pin 423.

[0045] Specifically, the locking pin 423 has an L-shaped structure, including a locking part 4231 that slides up and down inside the sliding groove and a limiting part 4232 installed on the side of the locking part 4231. The limiting plate 422 is provided with a first limiting groove 4221 and a second limiting groove 4222 in sequence from bottom to top along the height direction of the display body 1. In the first state, the limiting part 4232 is fastened in the first limiting groove 4221, which can prevent the locking pin 423 from sliding down. In the second state, the limiting part 4232 is fastened in the second limiting groove 4222, at which time the top of the locking pin 423 extends beyond the top wall of the display body 1.

[0046] In order to prevent the locking pin 423 from disengaging from the positioning seat 421, in this embodiment, a limiting baffle 424 is installed between the two limiting plates 422 located above the second limiting groove 4222. The limiting baffle 424, together with the two limiting plates 422 on both sides and the positioning seat 421, forms an annular groove through which the locking part 4231 passes. This annular groove can prevent the locking pin 423 from disengaging from the positioning seat 421.

[0047] In this embodiment, the orientation of the display screen body 1 is redefined, such as... Figure 1 , Figure 2 and Figure 7 As shown, in the installation case, the left and right direction is the length direction of the display body 1, the front and back direction is the thickness direction of the display body 1, and the up and down direction is the height direction of the display body 1.

[0048] In order to fix the display screen body 1, in this embodiment, as follows: Figure 1 As shown, a rearwardly extending locking ring 18 is fixedly provided on the rear wall of the first extension 11, wherein the locking ring 18 is C-shaped, as shown in the figure. Figure 4 and Figure 6 As shown, a locking tongue mechanism is installed on the left side wall of the display body 1, which can be inserted into the locking ring 18 on the adjacent side of the display body 1. The locking tongue mechanism includes a storage tube 26, a compression spring 27, and a locking tongue 28. The storage tube 26 is arranged on the display body 1 along the length direction of the display body 1. One end of the locking tongue 28 extends into the inner cavity of the storage tube 26 and is slidably connected to the inner wall of the storage tube 26. The compression spring 27 is located inside the storage tube 26 and is fixedly connected to the locking tongue 28 at one end and fixedly connected to the inner wall of the storage tube 26 at the other end. The locking tongue 28 is provided with a pushing slope 281 near the front side wall of the display body 1.

[0049] With the above setup, the display screen body 1 is first initially installed during the installation process, and then the display screen body 1 is rotated around its locking pin 423, as follows. Figure 5 and Figure 8 As shown, when the display screen body 1 rotates, causing the outer wall of the locking ring 18 to abut against the pushing slope 281 on the locking tongue 28, the locking ring 18 applies pressure to the pushing slope 281, thereby compressing the locking tongue 28 against the compression spring 27, allowing the locking tongue 28 to retract into the storage tube 26. When the display screen body 1 to be installed is flush with the other display screen bodies 1, as shown... Figure 5 As shown, at this time, the compression spring 27 pushes the locking tongue 28 to reset and inserts it into the lock hole of the locking ring 18, thereby locking the two adjacent display screen bodies 1 and realizing the quick installation of the display screen body 1.

[0050] Since the bolt 28 can be reset and inserted into the inner part of the adjacent lock ring 18 under the action of the compression spring 27, and the second extension part 12 and the first extension part 11 after installation enclose a "mouth"-shaped component, with the bolt 28 and the lock ring 18 arranged inside the "mouth", in order to facilitate the disassembly of any display body 1, it is necessary to be able to adjust the position of the bolt 28.

[0051] In this embodiment, as Figure 1 , Figure 3 and Figure 4 shown, a driving mechanism for driving the bolt 28 to move is further provided inside the display body 1; a second chamber 14 is provided inside the display body 1 along the length direction of the display body 1, and a first chamber 13 communicating with the second chamber 14 is further provided inside the display body 1. The driving mechanism includes a rack 22 slidably installed inside the second chamber 14 and a rotating shaft 31 rotatably installed inside the first chamber 13. One end of the rotating shaft 31 extends to the rear side of the display body 1, and a gear 21 meshing with the rack 22 is fixedly installed on the rotating shaft 31. The bolt mechanism is integrally installed on the rack 22.

[0052] Through the above settings, the rotating shaft 31 is used to drive the gear 21 to rotate, and then drive the rack 22 to move along the length direction of the display body 1. By installing the receiving tube 26 on the rack 22, the bolt 28 can be driven to move, so that the bolt 28 and the lock ring 18 are released from the locked state, and thus the locking of one side bolt 28 and the lock ring 18 can be solved.

[0053] Since there are locking structures for the display body 1 on both the left and right sides of the display body 1, when moving the position of the bolt 28 on the display body 1 to be removed to release the locked state, it is also necessary to switch the state of the other lock ring 18 and the adjacent bolt 28, and release the locking on both sides of the display body 1 simultaneously. Therefore, in this embodiment, as Figure 1 , Figure 4 and Figure 6 shown, a push block 25 is provided at the other end of the rack 22. When the bolt 28 on the display body 1 to be removed is received inside the display body 1, the push block 25 on the rack 22 is inserted into the lock hole of the lock ring 18, and then the bolt 28 on the other side is pushed out of the lock hole and the compression spring 27 is compressed, thus solving the locked state of the bolt 28 and the lock ring 18 on the other side, facilitating the rotation of the display body 1 to be removed, and making the display body 1 to be removed and the other display bodies 1 mutually misaligned in the state of Figure 8 ; then the locking pins 423 on the display body 1 to be removed and the lower display body 1 are switched to the first state to release the limitation on the display body 1 to be removed, and thus the display body 1 can be removed.

[0054] Since the latch 28 is installed inside the storage tube 26 and is pushed against by the compression spring 27, in order to prevent the latch 28 from completely disengaging from the storage tube 26, in this embodiment, as follows: Figure 4 As shown, the end of the storage tube 26 is fixedly provided with a limiting stop 261 to prevent the locking tongue 28 from disengaging from the storage tube 26, thereby blocking the locking tongue 28 and restricting a part of the locking tongue 28 inside the storage tube 26.

[0055] In order to ensure that the locking tongue 28 and the storage tube 26 are stored inside the display screen body 1, in this embodiment, the left side wall of the display screen body 1 is provided with a third chamber 15 that communicates with the second chamber 14. A first positioning plate 23 fixed on the rack 22 is installed in the third chamber 15, wherein the storage tube 26 is fixed on the first positioning plate 23.

[0056] In order to accommodate the push block 25 into the display screen body 1, in this embodiment, as follows: Figure 4 As shown, the right side wall of the display body 1 is provided with a fourth chamber 16 that communicates with the second chamber 14. The fourth chamber 16 is provided with a second positioning plate 24 fixed on the rack 22, and the push block 25 is fixedly installed on the second positioning plate 24.

[0057] To facilitate the rotation of the rotating shaft 31, in this embodiment, as follows: Figure 1 and Figure 3 As shown, a handle 32 is fixedly installed on the rotating shaft 31 located on the outside of the display screen body 1 by screws. The handle 32 facilitates the rotation of the rotating shaft 31 and the gear 21, which in turn facilitates the movement of the locking tongue 28 and the push block 25 through the rack 22, thereby realizing the switching of the display screen body 1 between the locked and unlocked states.

[0058] To prevent excessive rotation of the handle 32, in this embodiment, an annular guide groove 17 coaxial with the rotation shaft 31 is provided on the rear side of the display screen body 1, such as... Figure 1 As shown, the angle between the two ends of the guide groove 17 and its rotation center is 90°.

[0059] In order to ensure stable rotation of the handle 32, in this embodiment, such as Figure 3 As shown, a limiting block 321 is rotatably connected inside the guide groove 17, wherein the limiting block 321 is fixedly connected to the handle 32.

[0060] In this embodiment, the handle 32 not only drives the gear 21 to rotate and the rack 22 to move, but also provides a suitable gripping point for the operator to grip the display screen body 1, making it convenient to move and lift the display screen body 1.

[0061] The display screen body 1 to be installed exists in two states during installation:

[0062] When the display screen body 1 to be installed is in the unlocked state, such as Figure 3 and Figure 6 As shown, first, pass one end of the display body 1 to be installed through the screen and use the locking pin 423 to initially fix it. Then, rotate the display body 1 clockwise. When the display body 1 rotates to... Figure 7 When in the state, rotate the handle 32, and use the gear 21 and rack 22 to push the locking tongue 28 outward and insert it into the locking ring 18 on the adjacent side. The pushing block 25 disengages from the locking hole of the locking ring 18 of the display body 1 to be installed, so that the locking tongue 28 on the other side can be inserted into the locking ring 18, thereby realizing the installation of the display body 1.

[0063] When the display screen body 1 to be installed is in the locked state, such as Figure 5 As shown, at this time, the locking tongue 28 extends out of the display body 1, and the pushing block 25 retracts into the fourth chamber 16. First, the display body 1 to be installed is initially positioned, and then the display body 1 is rotated. At this time, when the locking ring 18 and the locking tongue 28 initially abut, the outer wall surface of the locking ring 18 abuts against the pushing inclined surface 281 of the locking tongue 28, thereby pushing the locking tongue 28 into the storage tube 26 and compressing the compression spring 27. When the display body 1 to be installed is aligned with the other display bodies 1, the compression spring 27 pushes the locking tongue 28 into the corresponding locking ring 18, thereby locking the display body 1 to be installed and realizing the rapid installation of the display body 1.

[0064] When it is necessary to remove one of the display screen bodies 1, the handle 32 on the display screen body 1 to be removed is turned from the locked state to the unlocked state. At this time, the gear 21 drives the rack 22 to move, thereby retracting the locking tongue 28 on the rack 22 into the display screen body 1, releasing the lock on one end of the display screen body 1 to be removed. At the same time, the rack 22 drives the push block 25 to be inserted into the lock hole of the locking ring 18, pushing the locking tongue 28 on the other side outward to release the lock ring 18 on the display screen body 1 to be removed, thus releasing the lock on the other side. This allows the display screen body 1 to be removed to rotate around the locking pin 423. Then, the locking pin 423 is switched from the second state to the first state, releasing the restriction on the display screen body 1 to be removed, thereby allowing the display screen body 1 to be removed.

[0065] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A splicing electronic display screen, characterized in that: The system includes several display screen bodies (1) arranged in an array. Each display screen body (1) has a first extension (11) flush with its front side. A rearwardly extending locking ring (18) is fixedly mounted on the rear wall of the first extension (11). A rack (22) and a drive mechanism for switching the rack (22) between unlocked and locked states are slidably connected inside the display screen body (1). A push block (25) is fixedly mounted on one end of the rack (22) near the locking ring (18), and a locking tongue mechanism is fixedly mounted on the other end of the rack (22). The locking tongue mechanism includes a storage tube (26), a locking tongue (28), and an elastic element. The storage tube (26) is fixed to the rack (22) and arranged along the length of the rack (22). The locking tongue (28) is located in the inner cavity of the receiving tube (26) and is slidably connected to the inner wall of the receiving tube (26). One end of the elastic element is fixedly connected to the locking tongue (28), and the other end is fixedly connected to the inner wall of the receiving tube (26). In the unlocked state, the rack (22) drives the push block (25) to push the locking tongue (28) on the adjacent side display body (1) to compress the elastic element and make the locking tongue (28) exit from the lock hole of the lock ring (18). The locking tongue mechanism is stored in the display body (1). In the locked state, the locking tongue (28) on the adjacent side display body (1) is pushed by the elastic element and inserted into the lock ring (18). The locking tongue mechanism extends out of the display body (1) so that the locking tongue (28) is inserted into the lock hole of the lock ring (18) of the adjacent side display body (1).

2. The splicing electronic display screen according to claim 1, characterized in that: A positioning block (41) is fixedly provided on the rear wall of the display body (1). The positioning block (41) is provided with a positioning hole (411) with an opening facing downward. The rear wall of the display body (1) is also provided with a locking pin structure (42) that switches between a first state and a second state. The locking pin structure (42) includes a positioning seat (421) fixed on the display body (1) and a locking pin (423) that slides along the height direction of the display body (1). In the first state, the top end of the locking pin (423) is disengaged from the positioning hole (411) of the positioning block (41). In the second state, the top end of the locking pin (423) is inserted into the positioning hole (411) of the positioning block (41) of the upper display body (1).

3. A splicing electronic display screen according to claim 2, characterized in that: The locking pin structure (42) also includes two limiting plates (422) fixed on the positioning seat (421) and extending backward to form sliding grooves. The sidewalls of the limiting plates (422) are provided with a first limiting groove (4221) and a second limiting groove (4222) in sequence along the height direction of the display body (1). The locking pin (423) is L-shaped. The locking pin (423) includes a locking part (4231) that is slidably connected along the sliding groove and a limiting part (4232) that extends to one side. In the first state, the limiting part (4232) is engaged in the first limiting groove (4221). In the second state, the limiting part (4232) is engaged in the second limiting groove (4222).

4. A splicing electronic display screen according to claim 3, characterized in that: Above the second limiting groove (4222) is a limiting baffle (424) that connects the two limiting plates (422), and the locking pin (423) is inserted into the annular groove formed by the limiting baffle (424) and the two limiting plates (422).

5. A splicing electronic display screen according to claim 1, characterized in that: The display screen body (1) is provided with a second chamber (14), and the rack (22) is installed in the second chamber (14) and slidably connected to the side wall of the second chamber (14).

6. A splicing electronic display screen according to claim 5, characterized in that: The display screen body (1) has a first chamber (13) that communicates with the second chamber (14). The driving mechanism includes a rotating shaft (31) that is rotatably installed inside the first chamber (13) and extends out of the display screen body (1) at one end. A gear (21) is fixedly installed on the rotating shaft (31), and the gear (21) meshes with the rack (22).

7. A splicing electronic display screen according to claim 6, characterized in that: A handle (32) is fixedly connected to the end of the rotating shaft (31) extending from the display screen body (1).

8. A splicing electronic display screen according to claim 7, characterized in that: The rear wall of the display screen body (1) is provided with an arc-shaped guide groove (17) coaxial with the rotating shaft (31). A limiting block (321) is slidably connected in the guide groove (17), and the limiting block (321) is fixedly connected to the handle (32).

9. A splicing electronic display screen according to claim 5, characterized in that: The display body (1) has a third chamber (15) on the side wall away from the locking ring (18) that communicates with the second chamber (14). The third chamber (15) has a first positioning plate (23) fixed on the rack (22), and the storage tube (26) is fixed on the first positioning plate (23).

10. A splicing electronic display screen according to claim 9, characterized in that: The latch (28) has a pushing slope (281) on the side wall near the front of the display screen body (1).

Images