Locking device and display screen

Abstract

The present invention relates to a locking device and a display screen. The locking device includes an adjusting mechanism, a first locking component, and a second locking component for respectively locking on different display modules. The adjusting mechanism includes: a first connecting arm fixed on the first locking component; a second connecting arm fixed on the second locking component; and an adjusting component connected between the first connecting arm and the second connecting arm. When the adjusting component changes the distance between the first connecting arm and the second connecting arm, the splicing angle between the first locking component and the second locking component changes, preventing the replacement of parts of the locking device, thereby quickly adjusting the splicing angle of the locking device and improving the assembly efficiency of the display screen.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and particularly to a locking device and a display screen including the locking device. Background Art

[0002] An LED (Light Emitting Diode) display screen is used to display various information such as texts, images, and videos. The LED display screen integrates electronic technologies, computer technologies, and information processing technologies, and performs display control in a modular structure. By lighting or extinguishing the lamp beads, the screen display content such as texts, animations, pictures, or videos can be replaced. The LED display screen has advantages such as bright colors, a wide dynamic range, high brightness, long service life, and stable and reliable operation, and thus is widely used in commercial media, cultural performance markets, stadiums, information dissemination, news release, and securities trading, etc., and can meet the needs of different environments.

[0003] An LED display screen is usually formed by splicing a plurality of display modules, that is, adjacent two display modules are usually spliced using a locking device. However, for a traditional LED display screen, when it is necessary to change the splicing angle between two display modules, it is necessary to re-customize the angle piece in the locking device to meet the splicing requirements after the splicing angle is changed, which will cause the installation of the LED display screen to be time-consuming and costly. Summary of the Invention

[0004] One technical problem solved by the present invention is how to quickly adjust the splicing angle of the locking device.

[0005] A locking device includes an adjusting mechanism, a first locking component, and a second locking component for respectively locking on different display modules. The adjusting mechanism includes:

[0006] A first connecting arm fixed on the first locking component;

[0007] A second connecting arm fixed on the second locking component; and

[0008] An adjusting component connected between the first connecting arm and the second connecting arm. When the adjusting component changes the distance between the first connecting arm and the second connecting arm, the splicing angle between the first locking component and the second locking component changes.

[0009] In one embodiment, the adjusting assembly includes a first sliding member, a second sliding member, a first connecting assembly, a second connecting assembly, and an adjusting member. The first sliding member and the second sliding member are both disposed on the adjusting member. The first connecting assembly is connected between the first sliding member and the first connecting arm. The second connecting assembly is connected between the first sliding member and the second connecting arm. The adjusting member is capable of changing the distance between the first sliding member and the second sliding member.

[0010] In one embodiment, the adjusting member includes a first adjusting section and a second adjusting section that are connected to each other and coaxially disposed. A first thread for screwing with the first sliding member is provided on the first adjusting section. A second thread for screwing with the second sliding member is provided on the second adjusting section. The helix directions of the first thread and the second thread are opposite to each other.

[0011] In one embodiment, the first adjusting section has an end face disposed away from the second adjusting section. A counterbore for rotating the adjusting member is formed by recessing along the axial direction of the first adjusting section on the end face.

[0012] In one embodiment, the first connecting assembly includes two first connecting rods disposed at intervals. Two ends of the first connecting rod are respectively rotatably connected to the first sliding member and the first connecting arm. Two ends of the second connecting rod are respectively rotatably connected to the first sliding member and the second connecting arm.

[0013] In one embodiment, the second sliding member includes a first sliding portion and a second sliding portion connected to each other. The first sliding portion abuts between the first connecting arm and the first locking assembly. The second sliding portion abuts between the second connecting arm and the second locking assembly.

[0014] In one embodiment, a first groove is formed between the first connecting arm and the first locking assembly. The first connecting arm includes a first baffle that defines a partial boundary of the first groove and is disposed close to the adjusting member. The first sliding portion is received in the first groove and can abut against the first baffle. A second groove is formed between the second connecting arm and the second locking assembly. The second connecting arm includes a second baffle that defines a partial boundary of the second groove and is disposed close to the adjusting member. The second sliding portion is received in the second groove and can abut against the second sliding portion.

[0015] In one embodiment, an elastic member is further included. One end of the elastic member is connected to the first locking assembly, and the other end of the elastic member is connected to the second locking assembly.

[0016] In one embodiment, an arc-shaped groove is formed in the first locking component, and the second locking component includes an arc-shaped block which is slidably engaged with the arc-shaped groove.

[0017] A display screen includes a first display module, a second display module, and the locking device as described above. The first locking component is fixed on the first display module, and the second locking component is fixed on the second display module.

[0018] One technical effect of an embodiment of the present invention is that: since it is only necessary to make the adjusting component change the distance between the first connecting arm and the second connecting arm, the splicing angle between the first locking component and the second locking component can be changed, preventing the replacement of parts of the locking device, thereby quickly adjusting the splicing angle of the locking device and improving the assembly efficiency of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. 1 is a schematic perspective view of the locking device provided for an embodiment;

[0020] Figure 2 FIG. Figure 1 2 is a schematic exploded view of the locking device shown;

[0021] Figure 3 FIG. Figure 1 3 is a schematic perspective view of the locking device shown from another perspective;

[0022] Figure 4 FIG. Figure 1 4 is a schematic partial exploded view of the locking device shown after removing the adjusting mechanism;

[0023] Figure 5 FIG. Figure 1 5 is a schematic perspective view of the adjusting mechanism in the locking device shown;

[0024] Figure 6 FIG. Figure 5 6 is a schematic first exemplary exploded view of the adjusting mechanism shown;

[0025] Figure 7 FIG. Figure 5 7 is a schematic second exemplary exploded view of the adjusting mechanism shown;

[0026] Figure 8 FIG. Figure 5 8 is a schematic perspective view of the adjusting member in the adjusting mechanism shown;

[0027] Figure 9 FIG. Figure 1 9 is a schematic plan sectional view of the locking device shown when the splicing angle between the first locking component and the second locking component is greater than 180°;

[0028] Figure 10 The Figure 1 side view structural schematic diagram when the splicing angle of the first locking component and the second locking component in the locking device shown is greater than 180°;

[0029] Figure 11 The Figure 1 planar sectional structural schematic diagram when the splicing angle of the first locking component and the second locking component in the locking device shown is equal to 180°;

[0030] Figure 12 The Figure 1 side view structural schematic diagram when the splicing angle of the first locking component and the second locking component in the locking device shown is equal to 180°;

[0031] Figure 13 The Figure 1 side view structural schematic diagram when the splicing angle of the first locking component and the second locking component in the locking device shown is less than 180°;

[0032] Figure 14 The Figure 1 side view structural schematic diagram when the splicing angle of the first locking component and the second locking component in the locking device shown is less than 180°. Detailed implementation manners

[0033] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the disclosure of the present invention can be understood more thoroughly and comprehensively.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "inner", "outer", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only embodiments.

[0035] Refer to Figure 1 , Figure 2 and Figure 3, in an embodiment of the present invention, the display screen provided can be an LED display screen. The display screen includes a first display module, a second display module, and a locking device 10. The locking device 10 is connected between the first display module and the second display module. The locking device 10 can not only splice the first display module and the second display module, but also conveniently adjust the splicing angle between the first display module and the second display module. The locking device 10 includes a first locking component 20, a second locking component 30, and an adjusting mechanism 40. The first locking component 20 is locked with the first display module, the second locking component 30 is locked with the second display module, and the adjusting mechanism 40 is connected between the first locking component 20 and the second locking component 30. Through the action of the adjusting mechanism 40, it can ensure the stable and reliable splicing between the first locking component 20 and the second locking component 30 for the first display module and the second display module, and at the same time can adjust the splicing angle between the first display module and the second display module. The adjusting mechanism 40 includes a first connecting arm 100, a second connecting arm 200, and an adjusting component 300. The adjusting component 300 is connected between the first connecting arm 100 and the second connecting arm 200.

[0036] Refer to Figure 2 , Figure 5 and Figure 6 , in some embodiments, the first connecting arm 100 is generally in a long strip structure. The first connecting arm 100 is fixed on the first locking component 20. For example, the first connecting arm 100 is fixed on the surface of the first locking component 20 facing away from the first display module. The first connecting arm 100 can be directly fixed on the first locking component 20 by means of bolt connection. Of course, the first connecting arm 100 can also be fixed on the first locking component 20 by means of snap connection or bonding. A first groove 110 is formed between the first connecting arm 100 and the first locking component 20. For example, an open slot is directly opened on the first connecting arm 100. When the first connecting arm 100 is fixed on the first locking component 20, part of the opening of the open slot is closed by the first locking component 20 to form the first groove 110. The first connecting arm 100 includes a first baffle 120. The first baffle 120 defines part of the boundary of the first groove 110. The first baffle 120 is arranged close to the second locking component 30. (There is no problem here)

[0037] The second connecting arm 200 is generally in a long strip shape and is fixed to the second locking component 30. For example, the second connecting arm 200 is fixed on the surface of the second locking component 30 facing away from the second display module. The second connecting arm 200 can be directly fixed to the second locking component 30 by means of bolt connection. Of course, the second connecting arm 200 can also be fixed to the second locking component 30 by means of snap connection or bonding. A second groove 210 is formed between the second connecting arm 200 and the second locking component 30. For example, an open slot is directly formed on the second connecting arm 200. When the second connecting arm 200 is fixed to the second locking component 30, a part of the opening of the open slot is closed by the second locking component 30 to form the second groove 210. The second connecting arm 200 includes a second baffle 220, and the second baffle 220 defines a part of the boundary of the second groove 210, and the second baffle 220 is disposed close to the first locking component 20. (There is no problem here.)

[0038] Refer to Figure 6 、 Figure 7 and Figure 8, in some embodiments, the adjusting assembly 300 includes a first slider 310, a second slider 320, a first connection assembly 330, a second connection assembly 340, and an adjusting member 350. The above-mentioned first baffle 120 and second baffle 220 are also both arranged close to the adjusting member 350. The adjusting member 350 can be a left - and - right - hand screw rod, so that the structure of the adjusting member 350 is simpler, making the entire adjusting mechanism 40 more compact in structure and occupying less space. For example, the adjusting member 350 includes a first adjusting section 351 and a second adjusting section 352. The ends of the first adjusting section 351 and the second adjusting section 352 are connected to each other and arranged coaxially. A first thread 351a is provided on the outer circumferential surface of the first adjusting section 351. Obviously, the first thread 351a is an external thread, and the helix direction of the first thread 351a can be to the left, that is, the first thread 351a is a left - hand thread. A second thread 352a is provided on the outer circumferential surface of the second adjusting section 352. Obviously, the second thread 352a is an external thread, and the helix direction of the second thread 352a can be to the right, that is, the second thread 352a is a right - hand thread. Therefore, the helix directions of the first thread 351a and the second thread 352a are opposite. Of course, the first thread 351a can also be a right - hand thread, and the second thread 352a is a left - hand thread. The first adjusting section 351 has an end face 351b, which is arranged away from the second adjusting section 352. A counterbore 351c is provided on the end face 351b, and the counterbore 351c extends along the axial direction of the first adjusting end. The central axis of the counterbore 351c can coincide with the central axis of the entire adjusting member 350. The cross - section of the counterbore 351c can be a regular hexagon. When a screw wrench with a cross - section also being a regular hexagon is engaged with the counterbore 351c, torque can be applied to the screw wrench to drive the adjusting member 350 to rotate, so as to adjust the splicing angle of the entire locking device 10 subsequently.

[0039] The first slider 310 can be generally in a rod - like structure. A through - hole is provided in the middle position of the first slider 310, and an internal thread is provided in the through - hole. The first adjusting section 351 of the adjusting member 350 is inserted into the through - hole, so that the first thread 351a of the first adjusting section 351 meshes with the internal thread in the through - hole, thus forming a screwed connection between the first adjusting section 351 and the first slider 310.

[0040] The second sliding member 320 can be generally in a plate-like structure. A through hole is provided at the middle position of the second sliding member 320, and internal threads are provided in the through hole. The second adjusting section 352 of the adjusting member 350 is inserted into the through hole, so that the second threads 352a of the second adjusting section 352 are engaged with the internal threads in the through hole, thereby forming a screwed connection between the second adjusting section 352 and the second sliding member 320. In view of the fact that the helix directions of the first thread 351a and the second thread 352a are just opposite, for example, when the adjusting member 350 rotates clockwise, it can cause the first sliding member 310 and the second sliding member 320 to slide while rotating relative to the adjusting member 350, and then the axial distance between the first sliding member 310 and the second sliding member 320 along the adjusting member 350 is reduced. When the adjusting member 350 rotates counterclockwise, it can cause the first sliding member 310 and the second sliding member 320 to slide while rotating relative to the adjusting member 350, and then the axial distance between the first sliding member 310 and the second sliding member 320 along the adjusting member 350 is increased.

[0041] The second sliding member 320 includes a first sliding portion 321 and a second sliding portion 322. The first sliding portion 321 and the second sliding portion 322 are connected to each other. The first sliding portion 321 is received in the first groove 110 between the first connecting arm 100 and the first locking assembly 20. At the same time, the first baffle 120 can abut against the first sliding portion 321, thereby playing a certain limiting role in the sliding of the first sliding portion 321. And the groove wall of the first groove 110 can abut against the first sliding portion 321, which can also play a limiting effect on the movement of the first sliding portion 321, thereby improving the movement accuracy of the first sliding portion 321. The second sliding portion 322 is received in the second groove 210 between the second connecting arm 200 and the second locking assembly 30. At the same time, the second baffle 220 can abut against the second sliding portion 322, thereby playing a certain limiting role in the sliding of the second sliding portion 322. And the groove wall of the second groove 210 can abut against the second sliding portion 322, which can also play a limiting effect on the movement of the second sliding portion 322, thereby improving the movement accuracy of the second sliding portion 322.

[0042] In some embodiments, the first connection assembly 330 is connected between the first slider 310 and the first connection arm 100. For example, the first connection assembly 330 includes two first connecting rods 331. One of the first connecting rods 331 is connected between one end of the first slider 310 and the first connection arm 100, and the other first connecting rod 331 is connected between the other end of the first slider 310 and the first connection arm 100. Both ends of the first connecting rod 331 can be rotatably connected to the first slider 310 and the first connection arm 100. The second connection assembly 340 is connected between the first slider 310 and the second connection arm 200. For example, the second connection assembly 340 includes two second connecting rods 341. One of the second connecting rods 341 is connected between one end of the first slider 310 and the second connection arm 200, and the other second connecting rod 341 is connected between the other end of the first slider 310 and the second connection arm 200. Both ends of the second connecting rod 341 can be rotatably connected to the first slider 310 and the second connection arm 200. For the first connecting rod 331 and the second connecting rod 341 located at the same end of the first slider 310, the first connecting rod 331 and the second connecting rod 341 are arranged crosswise to form a certain angle. When the adjusting member 350 moves to change the axial distance between the first slider 310 and the second slider 320 along the adjusting member 350, the included angle between the first connecting rod 331 and the second connecting rod 341 can be changed, so as to change the distance between the first connection arm 100 and the second connection arm 200 along the direction perpendicular to the axial direction of the adjusting member 350.

[0043] In some embodiments, the main body parts of the first locking assembly 20 and the second locking assembly 30 are arranged at intervals from each other, and the adjusting member 350 is located between the main body parts of the first locking assembly 20 and the second locking assembly 30. An arc-shaped groove 21 is formed on the first locking assembly 20, and the second locking assembly 30 includes an arc-shaped block 31, and the arc-shaped block 31 is slidably matched with the arc-shaped groove 21. Of course, the arc-shaped groove 21 can also be formed on the second locking assembly 30, and the first locking assembly 20 can also include an arc-shaped block 31. When the arc-shaped block 31 reciprocally slides in the arc-shaped groove 21, the splicing angle between the first locking assembly 20 and the second assembly can be changed, so as to adapt to the splicing angle between the first display module and the second display module, and finally realize the angular splicing between the first display module and the second display module. At the same time, through the matching relationship between the arc-shaped block 31 and the arc-shaped groove 21, the movement accuracy of the first locking assembly 20 and the second locking assembly 30 during the angle change can be ensured, so as to improve the accuracy of angle adjustment.

[0044] Refer to Figure 2 、 Figure 3 and Figure 4, an indicating groove or an indicating protrusion may be formed on the first locking assembly 20, and the indicating groove or the indicating protrusion is located beside the arc groove 21. A plurality of scales are formed on the arc block 31. When the indicating groove or the indicating protrusion is aligned with a certain scale on the arc block 31, the adjusted splicing angle between the first locking assembly 20 and the second locking assembly 30 can be known, and finally the splicing angle between the first display module and the second display module is determined.

[0045] Refer to Figure 3 , in some embodiments, the locking device 10 further includes an elastic member 50. The elastic member 50 may be a torsion spring. One end of the elastic member 50 is connected to the surface of the first locking assembly 20 facing the first display module, and the other end of the elastic member 50 is connected to the surface of the second locking assembly 30 facing the second display module. Under the action of the elastic force generated by the elastic member 50, the first locking assembly 20 and the second locking assembly 30 tend to approach each other, which can reduce the gap between the first locking assembly 20 and the second locking assembly 30.

[0046] Refer to Figure 9 and Figure 10 , when the wrench is engaged with the counterbore 351c on the adjusting member 350 and the adjusting member 350 is rotated counterclockwise, due to the limiting effect of the first groove 110 and the second groove 210 on the entire second sliding member 320, the first sliding member 310 and the second sliding member 320 can rotate and slide relative to the adjusting member 350 at the same time. Then, the axial distance between the first sliding member 310 and the second sliding member 320 increases, and drives the movement of the first connecting rod 331 and the second connecting rod 341. The included angle between the first connecting rod 331 and the second connecting rod 341 at the same end of the first sliding member 310 decreases, and the distance between the first connecting arm 100 and the second connecting arm 200 decreases and they approach each other. Finally, it drives the first locking assembly 20 and the second locking assembly 30 to "tilt upward", so that the included angle between the first locking assembly 20 and the second locking assembly 30 is greater than 180°, so as to adapt to the splicing angle α greater than 180° when the first display module and the second display module "tilt upward".

[0047] Refer to Figure 11 and Figure 12, when the wrench is engaged with the counterbore 351c on the adjusting member 350 and the adjusting member 350 is rotated clockwise, due to the limiting effect of the first groove 110 and the second groove 210 on the entire second sliding member 320, the first sliding member 310 and the second sliding member 320 can simultaneously rotate and slide relative to the adjusting member 350. Subsequently, the axial distance between the first sliding member 310 and the second sliding member 320 along the adjusting member 350 decreases, driving the movement of the first link 331 and the second link 341. This causes the angle between the first link 331 and the second link 341 at the same end of the first sliding member 310 to increase, and the distance between the first connecting arm 100 and the second connecting arm 200 to increase and move away from each other, such that the angle between the first locking assembly 20 and the second locking assembly 30 is equal to 180°, thereby adapting to the 180° splicing angle between the first display module and the second display module.

[0048] Refer to Figure 13 and Figure 14 , when the wrench is engaged with the counterbore 351c on the adjusting member 350 and the adjusting member 350 is continuously rotated clockwise, due to the limiting effect of the first groove 110 and the second groove 210 on the entire second sliding member 320, the first sliding member 310 and the second sliding member 320 can simultaneously rotate and slide relative to the adjusting member 350. Subsequently, the axial distance between the first sliding member 310 and the second sliding member 320 along the adjusting member 350 continues to decrease, driving the movement of the first link 331 and the second link 341. This causes the angle between the first link 331 and the second link 341 at the same end of the first sliding member 310 to continue to increase, and the distance between the first connecting arm 100 and the second connecting arm 200 to continue to increase and move away from each other. Eventually, it drives the first locking assembly 20 and the second locking assembly 30 to continue to "tilt downwards", such that the angle between the first locking assembly 20 and the second locking assembly 30 is less than 180°, thereby adapting to the splicing angle β less than 180° between the first display module and the second display module.

[0049] Therefore, only by rotating the adjusting member 350 can the included angle between the first locking assembly 20 and the second locking assembly 30 be changed, so as to adapt to different splicing angles between the first display module and the second display module. This prevents the replacement of some parts of the locking device 10, thereby improving the assembly efficiency of the entire display screen. More importantly, the rotation angle of the adjusting member 350 is a continuous value, which enables the adjusting member 350 to rotate at any required angle within a certain angle range, so as to realize the continuous change of the included angle between the first locking assembly 20 and the second locking assembly 30, and finally realize the stepless adjustment of the splicing angle between the first display module and the second display module, that is, the splicing angle between the first locking assembly 20 and the second locking assembly 30 can be finely adjusted, thereby improving the accuracy of the adjustment of the splicing angle between the first locking assembly 20 and the second locking assembly 30 to better adapt to the required splicing angles of the first display module and the second display module.

[0050] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0051] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it cannot be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A locking device, characterized in that, It includes an adjusting mechanism, a first locking component, and a second locking component that are respectively locked to different display modules. The adjusting mechanism includes: A first connecting arm fixed to the first locking component; A second connecting arm fixed to the second locking component; and An adjusting component connected between the first connecting arm and the second connecting arm. When the adjusting component changes the distance between the first connecting arm and the second connecting arm, the splicing angle between the first locking component and the second locking component changes; The adjusting component includes a first sliding member, a second sliding member, a first connecting component, a second connecting component, and an adjusting member. The first sliding member and the second sliding member are both disposed on the adjusting member. The first connecting component is connected between the first sliding member and the first connecting arm. The second connecting component is connected between the first sliding member and the second connecting arm. The adjusting member can change the distance between the first sliding member and the second sliding member; The adjusting member includes a first adjusting section and a second adjusting section that are connected to each other and coaxially disposed. A first thread for screwing with the first sliding member is provided on the first adjusting section. A second thread for screwing with the second sliding member is provided on the second adjusting section. The helix directions of the first thread and the second thread are opposite.

2. The latching device according to claim 1, characterized in that The first thread is a left-handed thread.

3. The latching device according to claim 1, wherein, The second thread is a right-handed thread.

4. The latching device according to claim 1, wherein The first adjusting section has an end face disposed away from the second adjusting section. A counterbore for rotating the adjusting member is formed by recessing along the axial direction of the first adjusting section on the end face.

5. The latching device according to claim 1, wherein The first connecting component includes two first connecting rods disposed at intervals. Two ends of the first connecting rod are respectively rotatably connected to the first sliding member and the first connecting arm. The second connecting component includes two second connecting rods. Two ends of the second connecting rod are respectively rotatably connected to the first sliding member and the second connecting arm.

6. The latching device according to claim 1, wherein, The second sliding member includes a first sliding portion and a second sliding portion connected to each other. The first sliding portion abuts between the first connecting arm and the first locking component. The second sliding portion abuts between the second connecting arm and the second locking component.

7. The latching device according to claim 1, characterized in that A first groove is formed between the first connecting arm and the first locking component. The first connecting arm includes a first baffle that defines a partial boundary of the first groove and is disposed close to the adjusting member. The first sliding portion is received in the first groove and can abut against the first baffle; a second groove is formed between the second connecting arm and the second locking component. The second connecting arm includes a second baffle that defines a partial boundary of the second groove and is disposed close to the adjusting member. The second sliding portion is received in the second groove and can abut against the second sliding portion.

8. The latching device according to claim 1, wherein It further includes an elastic member. One end of the elastic member is connected to the first locking component, and the other end of the elastic member is connected to the second locking component.

9. The latching device according to claim 1, characterized in that, An arc-shaped groove is formed on the first locking component. The second locking component includes an arc-shaped block that is slidably engaged with the arc-shaped groove.

10. A display screen, characterized in that, Comprising a first display module, a second display module, and the latching device according to any one of claims 1 to 9, wherein the first latching component is fixed on the first display module, and the second latching component is fixed on the second display module.

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