LED display screen edge locking device and LED display screen

Abstract

This invention provides a side-locking device for an LED display screen and an LED display screen itself. The side-locking device includes a side-locking structure comprising: a lock base; a lock cylinder movably disposed within the lock base, the lock cylinder including a core portion and a locking pin, a first anti-rotation portion, a clearance portion, and a second anti-rotation portion sequentially spaced on the core portion; the core portion having a retracted position for retracting the locking pin into the lock base, an insertion position for extending the locking pin out of the lock base, and a locking position for rotating the locking pin at a preset angle relative to the insertion position; an anti-rotation member rotatably disposed on the lock base and capable of anti-rotation engagement with the first anti-rotation portion; a first driving member movably disposed on the core portion; and a second driving member rotatably disposed on the lock base and capable of anti-rotation engagement with the second anti-rotation portion. The technical solution of this application effectively solves the problem in related technologies where the side-locking structure is prone to loosening, resulting in poor locking performance.

Description

Technical Field

[0001] This invention relates to the field of LED display technology, and more specifically, to an edge locking device for an LED display screen and an LED display screen. Background Technology

[0002] As LED display technology becomes more and more mature, the application of large-screen LED displays is also increasing. Typically, large-screen LED displays require multiple display modules to be combined. A side-locking structure is used to lock the two LED frames behind two adjacent display modules together, so that multiple display modules become a whole.

[0003] However, the aforementioned side lock structure includes a lock base mounted on an LED frame, a lock cylinder movably mounted on the lock base, and a drive component that drives the lock cylinder to move. The drive component drives the lock cylinder to have an insertion position where it can be inserted into another LED frame and a locking position where it can be rotated by a preset angle to lock the other LED frame. Because the lock cylinder is driven by only a single-stage drive component, the side lock structure is prone to loosening, resulting in a poor locking effect. Summary of the Invention

[0004] The main objective of this invention is to provide a side-locking device for an LED display screen and an LED display screen in order to solve the problem that the side-locking structure in related technologies is prone to loosening, resulting in poor locking effect.

[0005] To achieve the above objectives, according to one aspect of the present invention, a side-locking device for an LED display screen is provided. The side-locking device includes a side-locking structure, which includes: a lock base; a lock cylinder movably disposed within the lock base, the lock cylinder including a core portion and a locking pin, a first anti-rotation portion, a clearance portion, and a second anti-rotation portion sequentially spaced on the core portion; the core portion having a retracted position for retracting the locking pin into the lock base, an insertion position for extending the locking pin out of the lock base, and a locking position for rotating the locking pin relative to the insertion position by a preset angle; and an anti-rotation member rotatably disposed on the lock base and capable of engaging with the first... The locking mechanism includes an anti-rotation part and a first driving member, which is movably mounted on the core and drives the core to move along the direction of extension or retraction of the locking pin. When the core is in the retracted position, the first anti-rotation part engages with the anti-rotation member. When the core is in the inserted position, the clearance part engages with the anti-rotation member. The second driving member is rotatably mounted on the lock seat and engages with the second anti-rotation part. When the core is in the inserted position, the second driving member engages with the second anti-rotation part. The first driving member drives the anti-rotation member to rotate, thereby causing the second driving member to rotate, so that the core rotates from the inserted position to the locked position.

[0006] Furthermore, the first driving component includes a first connecting rod and a second connecting rod, a first driving shaft is connected to the core part, a first limiting elongated hole is provided on the first connecting rod, the first driving shaft is disposed in the first limiting elongated hole, a second driving shaft is connected to the anti-rotation component, the first end of the second connecting rod is hinged to the first connecting rod, a second limiting elongated hole is provided on the second end of the second connecting rod, and the second driving shaft is located in the second limiting elongated hole.

[0007] Furthermore, the first link includes a first force-applying rod segment and a first drive rod segment fixedly connected at an angle. The first end of the second link is hinged to the first force-applying rod segment. A first limiting elongated hole is provided on the first drive rod segment. The first force-applying rod segment drives the first drive rod segment to swing to drive the first drive shaft to move, so that the core part switches between the retracted position and the insertion position. The second end of the second link drives the second drive shaft to move within the second limiting elongated hole, so that the core part switches between the insertion position and the locking position. The first link moves relative to the first drive shaft through the first limiting elongated hole.

[0008] Furthermore, the second connecting rod includes a second force-applying rod segment and a second driving rod segment that are fixedly connected at an angle. The second force-applying rod segment is hinged to the first force-applying rod segment. The second driving rod segment is connected to the end of the second force-applying rod segment away from the first force-applying rod segment. A second limiting elongated hole is provided on the second driving rod segment, and the length direction of the second limiting elongated hole is perpendicular to the length direction of the first limiting elongated hole.

[0009] Furthermore, the lock seat includes a seat body and an installation channel disposed within the seat body. The core portion is movably installed within the installation channel. The installation channel has a first opening through which the core portion passes. The lock seat also includes a cover plate covering the first opening. The cover plate has a clearance hole through which the core portion passes. The side wall of the installation channel includes a first arc-shaped concave surface that can slide with an anti-rotation member and a second arc-shaped concave surface that can slide with a second driving member. A stop member is disposed on the installation channel. The second driving member and the anti-rotation member are located between the stop member and the cover plate.

[0010] Furthermore, the lock seat is provided with a limiting groove communicating with the installation channel. The limiting groove is located on the side of the stop member away from the cover plate. The lock cylinder also includes a core seat that is movably disposed in the limiting groove. The core seat is connected to the end of the core part away from the lock pin through an axial limiting structure. The core part is rotatably disposed relative to the core seat. The first driving member is movably disposed on the core part through the core seat. The core seat has a first limiting position and a second limiting position in the limiting groove. When the core seat is in the first limiting position, the core part is in the retracted position. When the core seat is in the second limiting position, the core part is in the inserted position.

[0011] Furthermore, the axial limiting structure includes a limiting ring groove disposed on the core portion and a limiting block inserted into the limiting ring groove, wherein the limiting block and the limiting ring groove are engaged in a limiting fit along the axial direction of the core portion.

[0012] Furthermore, the second driving member includes a driving disc rotatably mounted on the lock seat and a third link hinged between the driving disc and the anti-rotation member. The driving disc is sleeved outside the lock cylinder. The lock seat includes a mounting plate located between the driving disc and the anti-rotation member. The third link is pivotally mounted on the mounting plate. The driving disc can engage with the second anti-rotation member to prevent rotation. When the second driving member is driven by the anti-rotation member, the anti-rotation member rotates and drives the driving disc to rotate in the opposite direction to the rotation direction of the anti-rotation member through the third link, so that the core part switches between the insertion position and the locking position.

[0013] Furthermore, a third drive shaft is connected to the anti-rotation component, a third limiting elongated hole is provided on the first end of the third connecting rod, the third drive shaft is located in the third limiting elongated hole, a fourth drive shaft is connected to the drive disc, a fourth limiting elongated hole is provided on the second end of the third connecting rod, and the fourth drive shaft is located in the fourth limiting elongated hole.

[0014] Furthermore, the side locking device of the LED display screen also includes a pulling component disposed outside the lock seat and a resetting component connected between the first driving member and the lock seat. The resetting component applies a resetting force to the first driving member to maintain it in the retracted position. One end of the pulling component is connected to the first driving member, and the pulling component applies a pulling force to the first driving member in the direction of switching from the retracted position to the insertion position.

[0015] Furthermore, the pulling assembly includes a pulling seat, a pulling plate, and a pulling line. The pulling seat is disposed outside the lock seat, and the pulling plate is rotatably disposed on the pulling seat. The first end of the pulling line is connected to the first driving member, and the second end of the pulling line is connected to the pulling plate through a connecting shaft. The connecting shaft and the rotation axis of the pulling plate are spaced apart so that the second end of the pulling line rotates around the rotation axis of the pulling plate. The pulling line applies a pulling force to the first driving member.

[0016] The traction assembly also includes a stop structure spaced apart from the traction seat. The stop structure includes a stop seat and a stop pin movably disposed on the stop seat. The two ends of the traction plate are respectively provided with a first socket and a second socket that cooperate with the stop pin. The connecting shaft is located between the rotation axis of the traction plate and the second socket. When the stop pin is inserted into the first socket, the core part is kept in the retracted position under the action of the reset force. When the stop pin is inserted into the second socket, the core part is kept in the locked position under the action of the traction force.

[0017] According to another aspect of the present invention, an LED display screen is provided, including a first LED frame, a second LED frame, and a side locking device. The first LED frame and the second LED frame are arranged side by side or vertically. The side locking device is the aforementioned side locking device of the LED display screen. The side locking structure of the side locking device is installed on a first side adjacent to the first LED frame and the second LED frame. A second side adjacent to the first LED frame is provided with a locking hole through which the locking pin of the side locking structure passes. When the core part is in the locked position, the locking pin and the locking hole are staggered and cooperate with the stop on the second side.

[0018] According to another aspect of the present invention, an LED display screen is provided, including a first LED frame, a second LED frame and a side locking device. The first LED frame and the second LED frame are arranged side by side or vertically. The side locking device is the aforementioned side locking device of the LED display screen. The side locking structure of the side locking device is installed on a first side adjacent to the first LED frame and the second LED frame, and the pulling component of the side locking device is installed on a third side adjacent to the first side of the first LED frame.

[0019] According to the technical solution of this invention, the side-locking device of the LED display screen includes a side-locking structure. The side-locking structure of the LED display screen can be installed on an adjacent side of two adjacent LED frames. The side-locking structure includes: a lock base, a lock cylinder, an anti-rotation member, a first driving member, and a second driving member. The lock cylinder is movably disposed within the lock base, and the lock cylinder includes a core portion and a locking pin, a first anti-rotation portion, a clearance portion, and a second anti-rotation portion sequentially spaced on the core portion. The core portion has a retracted position for retracting the locking pin into the lock base, an insertion position for extending the locking pin out of the lock base, and a locking position for rotating the locking pin by a preset angle relative to the insertion position. The anti-rotation member is rotatably disposed on the lock base and can engage with the first anti-rotation portion to prevent rotation. The first driving member is movably mounted on the core portion and drives the core portion to move along the direction of extension or retraction of the locking pin. When the core portion is in the retracted position, the first anti-rotation part engages with the anti-rotation member to prevent rotation of the first anti-rotation part relative to the anti-rotation member, so that the core portion only moves between the retracted position and the insertion position relative to the anti-rotation member. When the core portion is in the insertion position, the clearance part engages with the anti-rotation member. At this time, the locking pin is inserted into the other adjacent side of the two adjacent LED frames, and the core portion can move relative to the anti-rotation member. The second driving member is rotatably mounted on the lock seat and engages with the second anti-rotation part. When the core portion is in the insertion position, the second driving member engages with the second anti-rotation part to prevent rotation of the second driving member relative to the second anti-rotation part. The first driving member drives the anti-rotation member to rotate, thereby causing the second driving member to rotate, so that the core portion rotates from the insertion position to the locked position. At this time, the locking pin locks the other adjacent side of the two adjacent LED frames to lock the two adjacent LED frames together. In this way, the first driving component drives the anti-rotation component to rotate, which in turn drives the second driving component to achieve multi-stage linkage, thereby driving the core to rotate to the locked position, avoiding the need for a single-stage driving component to drive the lock cylinder. This multi-stage linkage method of driving the core to rotate makes the side lock structure stable, less prone to loosening, and improves the locking effect. Therefore, the technical solution of this application effectively solves the problem in related technologies where the side lock structure is prone to loosening, resulting in poor locking performance. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0021] Figure 1 A perspective structural schematic diagram of an embodiment of the edge-locking structure of an LED display screen according to the present invention is shown;

[0022] Figure 2 It shows Figure 1 A perspective view of the LED display screen after the cover plate has been removed from the side lock structure;

[0023] Figure 3 It shows Figure 1 A three-dimensional structural diagram of the lock core and cover plate of the side lock structure of the LED display screen when the core is in the insertion position;

[0024] Figure 4 It shows Figure 1 A perspective view of the core seat of the side lock structure of the LED display screen located inside the lock seat;

[0025] Figure 5 It shows Figure 1 An exploded structural diagram of a portion of the edge lock structure of an LED display screen;

[0026] Figure 6 It shows Figure 5 An exploded structural diagram of a portion of the edge lock structure of an LED display screen;

[0027] Figure 7 It shows Figure 1 A three-dimensional structural diagram of the tensioning component of the edge-locking structure of an LED display screen;

[0028] Figure 8 It shows Figure 7 An exploded structural diagram of a portion of the tensioning component of the edge-locking structure of an LED display screen;

[0029] Figure 9 It shows Figure 1 A three-dimensional structural diagram of the core part of the edge-locking structure of the LED display screen when it is in the insertion position;

[0030] Figure 10 It shows Figure 1 A three-dimensional structural diagram of the core part of the side-locking structure of the LED display screen when it is in the locked position;

[0031] Figure 11 It shows Figure 1 A three-dimensional structural diagram of the core part of the edge-locking structure of the LED display screen when it is in the tensioned position;

[0032] Figure 12 A three-dimensional structural schematic diagram of an embodiment of an LED display screen according to the present invention is shown;

[0033] Figure 13 It shows Figure 12 A three-dimensional structural diagram of the first LED frame and side lock structure of the LED display screen;

[0034] Figure 14 It shows Figure 13 A magnified view of a portion of the LED display screen at point A;

[0035] Figure 15 It shows Figure 13 A magnified view of part B of the LED display screen.

[0036] The above figures include the following reference numerals:

[0037] 10. Side-lock structure;

[0038] 11. Lock seat; 111. Mounting plate; 1111. Limiting arc-shaped hole; 112. Cover plate; 1121. Clearance hole; 113. Second abutment slope; 114. Limiting groove; 115. Seat body; 116. Protective seat; 117. Installation channel; 1171. First arc-shaped concave surface; 1172. Second arc-shaped concave surface;

[0039] 12. Lock cylinder; 121. Core body; 122. Locking pin; 123. First anti-rotation part; 124. Clearance part; 125. Second anti-rotation part; 126. First drive shaft; 127. Core seat; 128. Axial limiting structure; 1281. Limiting ring groove; 1282. Limiting block;

[0040] 13. Anti-rotation component; 131. Second drive shaft; 132. Third drive shaft; 133. Anti-rotation disc; 134. First abutment inclined surface;

[0041] 14. First driving component; 141. First connecting rod; 1411. First force-applying rod segment; 1412. First driving rod segment; 1413. First limiting elongated hole; 142. Second connecting rod; 1421. Second force-applying rod segment; 1422. Second driving rod segment; 1423. Second limiting elongated hole;

[0042] 15. Second driving component; 151. Drive disc; 152. Third connecting rod; 153. Third limiting elongated hole; 154. Second opening; 155. Fourth limiting elongated hole; 156. Fourth drive shaft; 16. Stop component;

[0043] 21. First LED frame; 211. Third side; 22. Second LED frame; 23. Keyhole;

[0044] 31. Pulling assembly; 311. Pulling seat; 312. Pulling plate; 313. Pulling line; 314. Connecting shaft; 315. First socket; 316. Second socket; 32. Stop structure; 321. Stop seat; 322. Stop pin; 323. Elastic element; 33. Reset element. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. 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.

[0046] like Figures 1 to 15 As shown, the side-locking device of the LED display screen in this embodiment includes a side-locking structure 10. The side-locking structure 10 includes: a lock base 11, a lock cylinder 12, an anti-rotation member 13, a first driving member 14, and a second driving member 15. The lock cylinder 12 is movably disposed within the lock base 11. The lock cylinder 12 includes a core portion 121 and a locking pin 122, a first anti-rotation portion 123, a clearance portion 124, and a second anti-rotation portion 125 sequentially spaced on the core portion 121. The core portion 121 has a retracted position where the locking pin 122 is retracted into the lock base 11, an insertion position where the locking pin 122 extends out of the lock base 11, and a locking position where it can rotate a preset angle relative to the insertion position. The anti-rotation member 13 is rotatably disposed on the lock base 11 and can cooperate with the first anti-rotation portion 123 to prevent rotation. The first driving member 14 is movably disposed on the core portion 121 and drives the core portion 121 to move along the direction of extension or retraction of the locking pin. When the core portion 121 is in the retracted position, the first anti-rotation part 123 engages with the anti-rotation member 13 to prevent rotation. When the core portion 121 is in the insertion position, the clearance part 124 engages with the anti-rotation member 13 accordingly. The second driving member 15 is rotatably disposed on the lock seat 11 and can engage with the second anti-rotation part 125 to prevent rotation. When the core portion 121 is in the insertion position, the second driving member 15 engages with the second anti-rotation part 125 to prevent rotation. The first driving member 14 drives the anti-rotation member 13 to rotate, thereby causing the second driving member 15 to rotate, so that the core portion 121 rotates from the insertion position to the locked position.

[0047] Applying the technical solution of this embodiment, the side-locking device of the LED display screen includes a side-locking structure 10. The side-locking structure 10 of the LED display screen can be installed on one adjacent side of two adjacent LED frames. The side-locking structure 10 includes: a lock base 11, a lock cylinder 12, an anti-rotation member 13, a first driving member 14, and a second driving member 15. When the core part 121 is in the retracted position, the first anti-rotation part 123 engages with the anti-rotation member 13 to prevent rotation, thus preventing the first anti-rotation part 123 from rotating relative to the anti-rotation member 13, allowing the core part 121 to move only between the retracted position and the insertion position relative to the anti-rotation member 13. When the core part 121 is in the insertion position, the clearance part 124 engages with the anti-rotation member 13. At this time, the locking pin 122 is inserted into another adjacent side of the two adjacent LED frames, allowing the core part 121 to move relative to the anti-rotation member 13. The second driving member 15 is rotatably mounted on the lock seat 11 and can engage with the second anti-rotation part 125 to prevent rotation. When the core part 121 is in the inserted position, the second driving member 15 engages with the second anti-rotation part 125 to prevent rotation of the second driving member 15 relative to the second anti-rotation part 125. The first driving member 14 drives the anti-rotation part 13 to rotate, thereby causing the second driving member 15 to rotate, so that the core part 121 rotates from the inserted position to the locked position. At this time, the locking pin 122 locks the other side of the two adjacent LED frames to lock the two adjacent LED frames together. In this way, the first driving member 14 drives the anti-rotation part 13 to rotate, thereby driving the second driving member 15 to achieve multi-stage linkage to drive the core part 121 to rotate to the locked position, avoiding the movement of the lock cylinder 12 by only a single driving member. The multi-stage linkage to drive the core part 121 to rotate makes the side lock structure 10 stable and not easy to loosen, thus improving the locking effect. Therefore, the technical solution of this embodiment effectively solves the problem in related technologies that the side lock structure is prone to loosening, resulting in poor locking effect.

[0048] It should be noted that the direction of the locking pin's extension or retraction is determined by the location of the LED display's side locking device on the side of the LED frame. If the LED display's side locking device is located on the left side of the LED frame, the extension direction is to the left and the retraction direction is to the right. If it is located on the right side of the LED frame, the direction is exactly the opposite of when it is located on the left side. If the LED display's side locking device is located on the upper side of the LED frame, the extension direction is upward and the retraction direction is downward. If the LED display's side locking device is located on the rear side of the LED frame, the extension direction is forward and the retraction direction is backward.

[0049] Specifically, the anti-rotation engagement between the anti-rotation member 13 and the first anti-rotation part 123 means that the anti-rotation member 13 and the first anti-rotation part 123 are disposed on a mutually cooperating first anti-rotation plane. The anti-rotation engagement between the second driving member 15 and the second anti-rotation part 125 means that the second driving member 15 and the second anti-rotation part 125 are disposed on a mutually cooperating second anti-rotation plane. The clearance part 124 is a clearance ring groove.

[0050] like Figures 1 to 6 As shown, the first driving member 14 includes a first connecting rod 141 and a second connecting rod 142. A first driving shaft 126 is connected to the core portion 121. A first limiting elongated hole 1413 is provided on the first connecting rod 141, and the first driving shaft 126 is disposed in the first limiting elongated hole 1413. The first limiting elongated hole 1413 restricts the movement range of the first driving shaft 126 and prevents the first driving shaft 126 from disengaging from the first connecting rod 141. A second driving shaft 131 is connected to the anti-rotation member 13. The first end of the second connecting rod 142 is hinged to the first connecting rod 141, and a second limiting elongated hole 1423 is provided on the second end of the second connecting rod 142. The second driving shaft 131 is located in the second limiting elongated hole 1423. The second limiting elongated hole 1423 restricts the movement range of the second driving shaft 131 and prevents the second driving shaft 131 from disengaging from the second connecting rod 142. The hinged connection between the first link 141 and the second link 142 makes it easy to apply force when the first drive member 14 drives the first drive shaft 126 to move, and the first drive shaft 126 is easy to drive, making operation effortless.

[0051] The major axis of the first limiting elongated hole 1413 is greater than the minor axis of the first limiting elongated hole 1413. The major axis of the second limiting elongated hole 1423 is greater than the minor axis of the second limiting elongated hole 1423.

[0052] like Figures 1 to 11As shown, to facilitate the application of force from the first link 141 to the second link 142, so that the second link 142 drives the second drive shaft 131 to move within the second limiting elongated hole 1423, the first link 141 includes a first force-applying rod segment 1411 and a first drive rod segment 1412 fixedly connected at an angle. The first end of the second link 142 is hinged to the first force-applying rod segment 1411. The first limiting elongated hole 1413 is provided on the first drive rod segment 1412. The first force-applying rod segment 1411 drives the first drive rod segment 1412 to swing, thereby driving the first drive shaft 126 to move, so that the core part 121 switches between the retracted position and the insertion position. The second end of the second link 142 drives the second drive shaft 131 to move within the second limiting elongated hole 1423, thereby switching the core part 121 between the insertion position and the locking position, or between the insertion position and the tensioning position. The first link 141 moves relative to the first drive shaft 126 through the first limiting elongated hole 1413. During the switching process between the insertion position and the locking position of the core part 121, the position of the first drive shaft 126 is stationary relative to the first link 141. The long axis of the first limiting elongated hole 1413 is perpendicular to the axis of the first drive shaft 126, and the position of the first drive shaft 126 does not interfere with the movement of the first link 141.

[0053] like Figures 1 to 11 As shown, in order for the second connecting rod 142 to apply force to the second drive shaft 131 so that the second drive shaft 131 drives the anti-rotation member 13 to rotate, the second connecting rod 142 includes a second force-applying rod segment 1421 and a second drive rod segment 1422 that are fixedly connected at an angle. The second force-applying rod segment 1421 is hinged to the first force-applying rod segment 1411. The second drive rod segment 1422 is connected to the end of the second force-applying rod segment 1421 away from the first force-applying rod segment 1411. A second limiting elongated hole 1423 is provided on the second drive rod segment 1422, and the length direction of the second limiting elongated hole 1423 is perpendicular to the length direction of the first limiting elongated hole 1413.

[0054] It should be noted that the axis of the first force-applying rod segment 1411 and the axis of the first drive rod segment 1412 are located in the same plane as the axis of the second force-applying rod segment 1421, and the axis of the second drive rod segment 1422 is perpendicular to the aforementioned plane.

[0055] like Figures 1 to 11As shown, the lock base 11 includes a base body 115 and a mounting channel 117 disposed within the base body 115. The core portion 121 is movably mounted within the mounting channel 117. The axis of the mounting channel 117 is coaxial with the axis of the core portion 121. The mounting channel 117 has a first opening through which the core portion 121 passes. The lock base 11 also includes a cover plate 112 covering the first opening. The cover plate 112 has a clearance hole 1121 through which the core portion 121 passes. The sidewall of the mounting channel 117 includes a first arcuate concave surface 1171 that can slide with the anti-rotation member 13 and a second arcuate concave surface 1172 that can slide with the second driving member 15. In this way, the anti-rotation member 13 and the second driving member 15 rotate more smoothly within the mounting channel 117.

[0056] like Figures 1 to 11 As shown, a stop 16 is provided on the installation channel 117, and a second drive member 15 and an anti-rotation member 13 are located between the stop 16 and the cover plate 112. In this way, the second drive member 15 and the anti-rotation member 13 are limited between the stop 16 and the cover plate 112, preventing the second drive member 15 and the anti-rotation member 13 from displacing relative to the cover plate 112 along the axial direction of the core portion 121. When the core portion 121 is in the retracted position, the first anti-rotation member 123 can engage with the anti-rotation member 13 to prevent rotation, and the second drive member 15 engages with the clearance member 124 to avoid rotation. When the core portion 121 is in the insertion position, the clearance member 124 engages with the anti-rotation member 13, and the second drive member 15 engages with the second anti-rotation member 125 to prevent rotation, allowing the core portion 121 to rotate relative to itself. The stop 16 is preferably a convex block.

[0057] like Figures 1 to 11As shown, the lock base 11 is provided with a limiting groove 114 communicating with the mounting channel 117. The limiting groove 114 is located on the side of the stop member 16 away from the cover plate 112. The lock cylinder 12 also includes a core seat 127 movably disposed within the limiting groove 114. The core seat 127 is connected to the end of the core body portion 121 away from the locking pin 122 via an axial limiting structure 128. The core body portion 121 is rotatably disposed relative to the core seat 127. The axial limiting structure 128 prevents the core body portion 121 from axially moving on the core seat 127, so that the core body portion 121 can only rotate relative to the core seat 127. The first driving member 14 is movably disposed on the core body portion 121 via the core seat 127. The core seat 127 has a first limiting position and a second limiting position within the limiting groove 114. When the core seat 127 is in the first limiting position, with the limiting groove 114 engaging with the side wall away from the locking pin 122, the core part 121 is in the retracted position. When the core seat 127 is in the second limiting position, with the limiting groove 114 engaging with the side wall near the locking pin 122, the core part 121 is in the inserted position. The first drive shaft 126 is fixedly connected to the core seat 127. During the switching between the inserted and locked positions, the position of the first drive shaft 126 can remain stationary relative to the first connecting rod 141, allowing the core part 121 to rotate relative to the core seat 127. Then, when the core part 121 is in the inserted position, the first drive member 14 drives the anti-rotation member 13 to rotate, thereby causing the second drive member 15 and the core part 121 to rotate together.

[0058] Specifically, the axial limiting structure 128 includes a limiting ring groove 1281 disposed on the core portion 121 and a limiting block 1282 inserted into the limiting ring groove 1281. The limiting block 1282 and the limiting ring groove 1281 are engaged in a limiting fit along the axial direction of the core portion 121 to prevent the core portion 121 from moving axially relative to the core seat 127.

[0059] like Figures 1 to 11As shown, the core portion 121 also has a tensioned position where it retracts a preset distance relative to the insertion position, and a resisting structure is provided between the anti-rotation member 13 and the lock seat 11. The first driving member 14 drives the anti-rotation member 13 to rotate, which in turn drives the second driving member 15 to rotate, thereby rotating the core portion 121 from the insertion position to the locked position. At this time, the first driving member 14 driving the anti-rotation member 13 to rotate and drive the second driving member 15 can achieve multi-level linkage. On the other hand, the resisting structure cooperates with the lock seat 11 to drive the core portion 121 to move from the insertion position to the tensioned position. When the core portion 121 rotates to the locked position, the second driving member 15 is switched to a stationary position by being driven by the anti-rotation member 13. In this way, the core portion 121 can be kept in the locked position, preventing the second driving member 15 from continuing to rotate with the anti-rotation member 13 and avoiding the second driving member 15 from driving the core portion 121 back to the insertion position. During the process of switching the core part 121 from the insertion position to the tension position, the locking pin 122 pulls one of the two adjacent sides of the two adjacent LED frames closer to the other, or pushes the LED frame where the locking seat 11 is located to move to the adjacent LED frame, so as to lock the two adjacent LED frames together while reducing the gap between them, making it easier to adjust the position of the LED frames to ensure the display effect of the spliced ​​LED display screen.

[0060] It should be noted that the core part 121 retracting a preset distance relative to the insertion position means that the core part 121 retracts a preset distance within the lock seat 11, causing the locking pin 122 on the core part 121 to pull one of the two adjacent sides of the two adjacent LED frames closer to the other; or it means that the core part 121 remains stationary, and the anti-rotation member 13 abuts against the lock seat 11 through the abutting structure, causing the entire lock seat 11 to move relative to the core part 121 in the direction in which the core part 121 can extend, so as to push the LED frame where the lock seat 11 is located to move towards the adjacent LED frame.

[0061] like Figures 1 to 11 As shown, the anti-rotation member 13 includes an anti-rotation disc 133 sleeved on the lock cylinder 12 and a first abutting inclined surface 134 disposed on the anti-rotation disc 133. A second abutting inclined surface 113 is disposed on the surface of the cover plate 112 facing the anti-rotation disc 133. Both the first abutting inclined surface 134 and the second abutting inclined surface 113 extend along the circumferential spiral reference line of the anti-rotation disc 133. The first abutting inclined surface 134 and the second abutting inclined surface 113 form an abutting structure. When the anti-rotation member 13 rotates, it abuts against the first abutting inclined surface 134 and the second abutting inclined surface 113 to drive the core part 121 to move from the insertion position to the tightened position. In order to allow the lock cylinder 12 to freely retract a certain preset distance within the lock seat 11, the axial dimension of the clearance ring groove is larger than the axial dimension of the anti-rotation disc 133 corresponding to the clearance ring groove.

[0062] like Figures 1 to 11As shown, the lock seat 11 also includes a protective seat 116 disposed on the side of the cover plate 112 away from the first opening. When the core part 121 is in the retracted position, the locking pin 122 is located inside the protective seat 116, that is, retracted into the lock seat 11. In this way, the protective seat 116 protects the locking pin 122, preventing the locking pin 122 from interfering with objects outside the LED display screen. When the core part 121 is in the inserted position, locked position, or tightened position, the locking pin 122 is located outside the protective seat 116, that is, protruding from the lock seat 11.

[0063] like Figures 1 to 11 As shown, the second driving member 15 includes a driving disc 151 rotatably mounted on the lock seat 11 and a third connecting rod 152 hinged between the driving disc 151 and the anti-rotation member 13. The driving disc 151 is sleeved on the outside of the lock cylinder 12. The third connecting rod 152 enables the driving disc 151 and the anti-rotation member 13 to be linked. To install the third connecting rod 152 in the lock seat 11, the lock seat 11 includes a mounting plate 111 located between the driving disc 151 and the anti-rotation member 13. The third connecting rod 152 is pivotally mounted on the mounting plate 111, and the driving disc 151 can engage with the second anti-rotation part 125 to prevent rotation. When the second driving member 15 is driven by the anti-rotation member 13, the anti-rotation member 13 rotates and drives the driving disc 151 to rotate in the opposite direction to the rotation direction of the anti-rotation member 13 via the third connecting rod 152, so that the core part 121 can switch between the insertion position and the locking position or switch the core part 121 between the insertion position and the tightening position. The third link 152 is oscillatingly mounted on the mounting plate 111 via a pivot.

[0064] like Figures 1 to 11 As shown, a third drive shaft 132 is connected to the anti-rotation member 13. A third limiting elongated hole 153 is provided on the first end of the third connecting rod 152. When the second drive member 15 is driven by the anti-rotation member 13, the third drive shaft 132 is located inside the third limiting elongated hole 153. When the second drive member 15 is stationary, the third drive shaft 132 is located outside the third limiting elongated hole 153. The setting of the third limiting elongated hole 153 can limit the movement range of the third drive shaft 132, facilitating the sliding of the third drive shaft 132 within the third limiting elongated hole 153. A fourth drive shaft 156 is connected to the drive disc 151. A fourth limiting elongated hole 155 is provided on the second end of the third connecting rod 152, and the fourth drive shaft 156 is located inside the fourth limiting elongated hole 155. The setting of the fourth limiting elongated hole 155 can limit the movement range of the fourth drive shaft 156, facilitating the sliding of the fourth drive shaft 156 within the fourth limiting elongated hole 155.

[0065] like Figures 1 to 11As shown, the third drive shaft 132 is fixedly mounted on the surface of the anti-rotation disc 133 facing away from the first abutting inclined surface 134. The third limiting elongated hole 153 has a second opening 154 for the third drive shaft 132 to move in or out. When the second drive member 15 is stationary, the third drive shaft 132 moves out of the second opening 154. In this way, the second drive member 15 is switched to a stationary position by being driven by the anti-rotation member 13, preventing the second drive member 15 from continuing to rotate with the anti-rotation member 13 via the third connecting rod 152. Of course, in the embodiment not shown in the figure, the third limiting elongated hole 153 does not have a second opening. In this case, the third drive shaft is a telescopic shaft, which moves out of the third limiting elongated hole by retracting and avoiding, and is located outside the third limiting elongated hole by extending out of the stop.

[0066] like Figures 2 to 11 As shown, the mounting plate 111 is provided with a limiting arc-shaped hole 1111 for the fourth drive shaft 156 to pass through. When the fourth drive shaft 156 is limited and engaged with the first side end wall of the limiting arc-shaped hole 1111 near the second drive shaft 131, the core part 121 is in the inserted position. When the fourth drive shaft 156 is limited and engaged with the second side end wall of the limiting arc-shaped hole 1111 away from the second drive shaft 131, the second drive member 15 is stationary. This facilitates the third drive shaft 132 to move out of the second opening 154 and prevents the second drive member 15 from continuing to rotate with the anti-rotation member 13 via the third connecting rod 152.

[0067] like Figures 1 to 11 As shown, the side locking device of the LED display screen also includes a pulling assembly 31 disposed outside the lock base 11 and a resetting member 33 connected between the first driving member 14 and the lock base 11. The resetting member 33 applies a resetting force to the first driving member 14 to maintain it in the retracted position. Thus, under the action of the resetting force of the resetting member 33, the first driving member 14 can automatically reset to the retracted position. One end of the pulling assembly 31 is connected to the first driving member 14, and the pulling assembly 31 applies a pulling force to the first driving member 14 in the direction of switching from the retracted position to the insertion position. Thus, under the action of the pulling force, the core part 121 can be held in the locked position or the tightened position, preventing the first driving member 14 from switching from the locked position to the retracted position, avoiding the lock cylinder 12 from loosening, and reducing the possibility of safety accidents. In this embodiment, the resetting member 33 is preferably a tension spring.

[0068] like Figures 1 to 7As shown, to facilitate the application of force from the first link 141 to the second link 142, so that the second link 142 drives the second drive shaft 131 to move within the second limiting elongated hole 1423, the first link 141 includes a first force-applying rod segment 1411 and a first drive rod segment 1412 fixedly connected at an angle. The first end of the second link 142 is hinged to the first force-applying rod segment 1411. The first limiting elongated hole 1413 is provided on the first drive rod segment 1412. The first force-applying rod segment 1411 drives the first drive rod segment 1412 to swing, thereby driving the first drive shaft 126 to move, so that the core part 121 switches between the retracted position and the insertion position. The second end of the second link 142 drives the second drive shaft 131 to move within the second limiting elongated hole 1423, thereby switching the core part 121 between the insertion position and the locking position, or between the insertion position and the tensioning position. The first link 141 moves relative to the first drive shaft 126 through the first limiting elongated hole 1413. During the switching process between the insertion position and the locking position of the core part 121, the position of the first drive shaft 126 is stationary relative to the first link 141. The long axis of the first limiting elongated hole 1413 is perpendicular to the axis of the first drive shaft 126, and the position of the first drive shaft 126 does not interfere with the movement of the first link 141.

[0069] like Figures 1 to 7 As shown, to facilitate the application of force from the second connecting rod 142 to the second drive shaft 131, so that the second drive shaft 131 drives the anti-rotation member 13 to rotate, the second connecting rod 142 includes a second force-applying rod segment 1421 and a second drive rod segment 1422 fixedly connected at an angle. The second force-applying rod segment 1421 is hinged to the first force-applying rod segment 1411, and the second drive rod segment 1422 is connected to the end of the second force-applying rod segment 1421 away from the first force-applying rod segment 1411. The length direction of the second limiting elongated hole 1423 is perpendicular to the length direction of the first limiting elongated hole 1413. The second force-applying rod segment 1421 and the first force-applying rod segment 1411 are hinged together by a hinge pin.

[0070] like Figures 1 to 7 As shown, the process of the core part 121 moving from the retracted position to the insertion position, and then rotating from the insertion position through the locking position to the tensioning position is as follows:

[0071] When the pulling assembly 31 pulls the first force-applying rod segment 1411 of the first driving member 14 to swing around the hinge axis, it drives the first driving rod segment 1412 to swing. This swings the first driving rod segment 1412 through the first limiting elongated hole 1413 on the first driving rod segment 1412, pushing the first driving shaft 126. This drives the first driving shaft 126 and the core seat 127 to move from the first limiting position to the second limiting position within the limiting groove 114. The first driving shaft 126 drives the core part 121 to move along its axis from the retracted position to the insertion position. When the first driving shaft 126 reaches the second limiting position, the core part 121 is in the insertion position. During this process, the second connecting rod 142 remains stationary.

[0072] After the core part 121 reaches the insertion position, the pulling assembly 31 continues to pull the first force-applying rod segment 1411 of the first driving member 14. Since the core seat 127 is limited by the side wall of the limiting groove 114 near the locking pin 122, the first driving shaft 126 and the core seat 127 no longer move. At the same time, the first driving shaft 126 is limited by the first end side wall of the first limiting elongated hole 1413, so that the first driving rod segment 1412 no longer swings. In this way, the swinging caused by pulling the first force-applying rod segment 1411 is converted into movement. The first force-applying rod segment 1411 drives the second force-applying rod segment 1421 to move together. The first driving rod segment 1412 also moves relative to the first driving shaft 126 through the first limiting elongated hole 1413, and the core part 121 can rotate relative to the core seat 127.

[0073] The second force-applying rod segment 1421 moves and drives the second drive rod segment 1422 to move synchronously. The second limiting elongated hole 1423 on the second drive rod segment 1422 drives the second drive shaft 131. When the second drive shaft 131 moves within the second limiting elongated hole 1423, it drives the anti-rotation member 13 to rotate. On the one hand, the anti-rotation member 13 drives the drive disc 151 to rotate in the opposite direction to the rotation direction of the anti-rotation member 13 through the third connecting rod 152, so that the core part 121 rotates from the insertion position to the locking position. On the other hand, the anti-rotation member 13 pushes the lock seat 11 to move through the first abutting inclined surface 134 and the second abutting inclined surface 113 abutting and cooperating, so that the core part 121 moves from the insertion position to the tightening position.

[0074] During the process of the anti-rotation component 13 driving the drive disk 151 to rotate in the opposite direction to the rotation direction of the anti-rotation component 13 via the third connecting rod 152: the anti-rotation disk 133 rotates and abuts against the side wall of the third limiting elongated hole 153 through the third drive shaft 132, so as to drive the first end of the third connecting rod 152 to swing around the swing shaft, so that the side wall of the fourth limiting elongated hole 155 on the third connecting rod 152 abuts against the fourth drive shaft 156 and drives the fourth drive shaft 156. The fourth drive shaft 156 rotates to drive the drive disk 151 to rotate in the opposite direction to the rotation direction of the anti-rotation disk 133. When the fourth drive shaft 156 is limited and engaged with the second side wall of the limiting arc-shaped hole 1111 on the mounting plate 111 away from the second drive shaft 131, the fourth drive shaft 156 stops rotating, the drive disk 151 is stationary, and at this time the core part 121 reaches the locked position.

[0075] During the process of the anti-rotation member 13 pushing the lock seat 11 to move through the first abutting inclined surface 134 and the second abutting inclined surface 113: when the anti-rotation disc 133 rotates, the first abutting inclined surface 134 and the second abutting inclined surface 113 on the anti-rotation disc 133 abut and cooperate to push the cover plate 112 to move in the direction in which the core part 121 can extend. During this process, the third drive shaft 132 disengages from the second opening 154 and no longer drives the third connecting rod 152 to swing. That is, after the core part 121 reaches the locking position, the core part 121 remains relatively stationary. Subsequently, the anti-rotation disc 133 only drives the lock seat 11 to move until the two adjacent LED frames contact each other and there is no gap between them. Then, the core part 121 moves from the relative insertion position to the tensioned position.

[0076] It should be noted that when the anti-rotation member 13 drives the drive disk 151 to rotate in the opposite direction to the rotation direction of the anti-rotation member 13 via the third link 152, the core part 121 rotates from the insertion position to the locking position, so that the core part 121 can rotate to the locking position. At this time, the first drive member 14 drives the anti-rotation member 13 to rotate, thereby driving the second drive member 15 to rotate, which can realize multi-level linkage. Furthermore, the two LED frames block each other when they are in contact. After the core part 121 reaches the locking position, it does not need to continue to move to the tension position. At this time, the core part 121 can remain in the locking position.

[0077] like Figures 1 to 8As shown, the traction assembly 31 includes a traction seat 311, a traction plate 312, and a traction line 313. The traction seat 311 is disposed outside the lock seat 11. The traction plate 312 is rotatably disposed on the traction seat 311. The first end of the traction line 313 is connected to the first driving member 14. The second end of the traction line 313 is connected to the traction plate 312 through a connecting shaft 314. The connecting shaft 314 and the rotation axis of the traction plate 312 are spaced apart so that the second end of the traction line 313 rotates around the rotation axis of the traction plate 312. The traction line 313 applies a traction force to the first driving member 14. In this way, the pull plate 312 rotates on the pull seat 311 to pull the pull line 313, causing the pull plate 312 to drive the second end of the pull line 313 to rotate around the rotation axis of the pull plate 312 via the connecting shaft 314. This allows the pull line 313 to apply a pulling force to the first drive member 14, facilitating the movement of the core part 121 from the retracted position to the insertion position, and then from the insertion position to the tensioned position, passing through the locking position. Conversely, the reset member 33 pulls the first drive member 14 to apply a reset force, facilitating the movement of the core part 121 from the tensioned position to the insertion position, passing through the locking position, and then from the insertion position to the retracted position.

[0078] like Figures 1 to 8 As shown, the traction assembly 31 also includes a stop structure 32 spaced apart from the traction seat 311. The stop structure 32 includes a stop seat 321 and a stop pin 322 movably disposed on the stop seat 321. The two ends of the traction plate 312 are respectively provided with a first insertion port 315 and a second insertion port 316 that cooperate with the stop pin 322. The connecting shaft 314 is located between the rotation axis of the traction plate 312 and the second insertion port 316. Driven by the restoring force, the traction plate 312 rotates counterclockwise around its rotation axis. When it rotates to the position where the stop pin 322 corresponds to the first insertion port 315, and the stop pin 322 is inserted into the first insertion port 315, the core part 121 is held in the retracted position under the action of the restoring force. The pull plate 312 is manually or with the aid of tools driven to rotate clockwise around its rotation axis. When it rotates to the position corresponding to the stop pin 322 and the second insertion port 316, the core part 121 is held in the locked or tightened position under the action of the pulling force. In this embodiment, the pull plate 312 can rotate 180 degrees. When the first insertion port 315 and the second insertion port 316 on the pull plate 312 respectively cooperate with the stop pin 322, it is convenient for the core part 121 to switch between the retracted position and the locked position, or to switch between the retracted position and the tightened position, which is convenient to operate and easy to implement. Moreover, when the core part 121 is held in the locked or tightened position, it can enhance the stability of the locking of the side locking device of the LED display screen during the insertion and engagement. At the same time, when the core part 121 is held in the retracted position, the side locking device of the LED display screen will not loosen on the LED frame, which can enhance the stability of the installation.

[0079] In this embodiment, the stop seat 321 is provided with a guide hole for the stop pin 322 to pass through. An elastic element 323 is provided inside the stop seat 321. The elastic element 323 is sleeved on the outside of the stop pin 322 and located between the stop pin 322 and the inner wall of the stop seat 321. The elastic element 323 applies a spring force to the stop pin 322 in the direction of the pulling plate 312. Thus, during the 180-degree rotation of the pulling plate 312, if the stop pin 322 is manually driven or squeezed by the pulling plate 312, the stop pin 322 will retract a certain distance inside the stop seat 321. When the pulling plate 312 rotates to the position corresponding to the stop pin 322 in the first insertion port 315 or the second insertion port 316, the stop pin 322 can be inserted into the first insertion port 315 or the second insertion port 316 under the action of the spring force.

[0080] This application also provides an LED display screen, such as... Figures 12 to 15 As shown, the LED display screen of this embodiment includes a first LED frame 21, a second LED frame 22, and a side-locking device. The first LED frame 21 and the second LED frame 22 are arranged side by side. The first LED frame 21 is one of the two adjacent LED frames mentioned above, and the second LED frame 22 is the other of the two adjacent LED frames mentioned above. The side-locking device is the side-locking device of the LED display screen mentioned above. The side-locking structure 10 of the side-locking device is installed on the first side adjacent to the first LED frame 21 and the second LED frame 22. The second side adjacent to the first LED frame 21 of the second LED frame 22 is provided with a locking hole 23 through which the locking pin 122 of the side-locking structure 10 passes. When the core part 121 is in the locked position, the locking pin 122 and the locking hole 23 are staggered and cooperate with the stop on the second side. Since the side-locking device of the LED frame mentioned above can solve the problem of the side-locking structure being easy to loosen in the related technology, resulting in poor locking effect, the LED display screen with this side-locking device can solve the same technical problem.

[0081] This application also provides an LED display screen, such as... Figures 12 to 15 As shown, the LED display screen in this embodiment includes a first LED frame 21, a second LED frame 22, and a side-locking device. The first LED frame 21 and the second LED frame 22 are arranged side by side. The side-locking device is the same as the one described above for the LED display screen. The side-locking structure 10 of the side-locking device is installed on the first side adjacent to the first LED frame 21 and the second LED frame 22. The pulling component 31 of the side-locking device is installed on the third side 211 of the first LED frame 21 adjacent to the first side.

[0082] Specifically, the third side 211 is provided with a first through hole and a second through hole spaced apart. The pull plate 312 is located in the first through hole, and part of the stop pin 322 is located in the second through hole. The pull plate 312 and the stop pin 322 can be touched by the outside of the first LED frame 21 through the first and second through holes. One end of the pull plate 312 can be driven to rotate clockwise around its rotation axis by manually or with the help of a tool through the first through hole. The other end of the pull plate 312 is rotated to the outside of the first LED frame 21 through the first through hole, which facilitates manual driving of the other end of the pull plate 312 to rotate the pull plate 312 to a position where the first socket 315 or the second socket 316 on the pull plate 312 corresponds to the stop pin 322.

[0083] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0084] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0085] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A side locking device of an LED display screen, characterized in that, The side-locking device of the LED display screen includes a side-locking structure (10), which includes: Lock seat (11); The lock cylinder (12) is movably disposed within the lock seat (11). The lock cylinder (12) includes a core part (121) and a locking pin (122), a first anti-rotation part (123), a clearance part (124), and a second anti-rotation part (125) arranged sequentially at intervals on the core part (121). The core part (121) has a retracted position that allows the locking pin (122) to retract into the lock seat (11), an insertion position that allows the locking pin (122) to extend out of the lock seat (11), and a locking position that rotates a preset angle relative to the insertion position. An anti-rotation component (13) is rotatably mounted on a lock seat (11) and can engage with the first anti-rotation part (123) to prevent rotation. The first driving member (14) is movably disposed on the core part (121) and drives the core part (121) to move along the extension or retraction direction of the locking pin (122). When the core part (121) is in the retracted position, the first anti-rotation part (123) and the anti-rotation member (13) cooperate to prevent rotation. When the core part (121) is in the insertion position, the avoidance part (124) cooperates with the anti-rotation member (13). The second driving member (15) is rotatably disposed on the lock seat (11) and can engage with the second anti-rotation part (125) to prevent rotation. When the core part (121) is in the insertion position, the second driving member (15) engages with the second anti-rotation part (125) to prevent rotation. The first driving member (14) drives the anti-rotation part (13) to rotate so as to drive the second driving member (15) to rotate, so that the core part (121) rotates from the insertion position to the locking position. 2.The edge locking device of the LED display screen according to claim 1, characterized in that, The first driving member (14) includes a first connecting rod (141) and a second connecting rod (142). A first driving shaft (126) is connected to the core part (121). A first limiting elongated hole (1413) is provided on the first connecting rod (141). The first driving shaft (126) is disposed in the first limiting elongated hole (1413). A second driving shaft (131) is connected to the anti-rotation member (13). The first end of the second connecting rod (142) is hinged to the first connecting rod (141). A second limiting elongated hole (1423) is provided on the second end of the second connecting rod (142). The second driving shaft (131) is located in the second limiting elongated hole (1423).

3. The edge locking device of the LED display screen according to claim 2, characterized in that, The first connecting rod (141) includes a first force-applying rod segment (1411) and a first drive rod segment (1412) fixedly connected at an angle. The first end of the second connecting rod (142) is hinged to the first force-applying rod segment (1411). The first limiting elongated hole (1413) is disposed on the first drive rod segment (1412). The first force-applying rod segment (1411) drives the first drive rod segment (1412) to swing to drive the first drive shaft (126) to move, so that the core part (121) switches between the retracted position and the inserted position. The second end of the second connecting rod (142) drives the second drive shaft (131) to move in the second limiting elongated hole (1423), so that the core part (121) switches between the inserted position and the locked position. The first connecting rod (141) moves relative to the first drive shaft (126) through the first limiting elongated hole (1413).

4. The edge locking device for the LED display screen according to claim 3, characterized in that, The second connecting rod (142) includes a second force-applying rod segment (1421) and a second driving rod segment (1422) that are fixedly connected at an angle. The second force-applying rod segment (1421) is hinged to the first force-applying rod segment (1411). The second driving rod segment (1422) is connected to the end of the second force-applying rod segment (1421) away from the first force-applying rod segment (1411). The second limiting elongated hole (1423) is provided on the second driving rod segment (1422). The length direction of the second limiting elongated hole (1423) is perpendicular to the length direction of the first limiting elongated hole (1413).

5. The edge locking device for the LED display screen according to claim 1, characterized in that, The lock seat (11) includes a seat body (115) and an installation channel (117) disposed in the seat body (115). The core part (121) is movably installed in the installation channel (117). The installation channel (117) has a first opening through which the core part (121) passes. The lock seat (11) also includes a cover plate (112) covering the first opening. The cover plate (112) is provided with a clearance hole (1121) through which the core part (121) passes. The side wall of the installation channel (117) includes a first arc-shaped concave surface (1171) that can slide with the anti-rotation member (13) and a second arc-shaped concave surface (1172) that can slide with the second driving member (15). A stop (16) is provided on the installation channel (117), and the second drive (15) and the anti-rotation member (13) are located between the stop (16) and the cover plate (112).

6. The edge locking device of the LED display screen according to claim 5, characterized in that, The lock base (11) is provided with a limiting groove (114) communicating with the mounting channel (117). The limiting groove (114) is located on the side of the stop (16) away from the cover plate (112). The lock cylinder (12) also includes a core seat (127) movably disposed in the limiting groove (114). The core seat (127) is connected to the end of the core body (121) away from the locking pin (122) by an axial limiting structure (128). The core body (121) is relatively The core seat (127) is rotatably disposed, and the first driving member (14) is movably disposed on the core body (121) via the core seat (127). The core seat (127) has a first limiting position and a second limiting position in the limiting groove (114). When the core seat (127) is in the first limiting position, the core body (121) is in the retracted position. When the core seat (127) is in the second limiting position, the core body (121) is in the inserted position.

7. The edge locking device of the LED display screen according to claim 6, characterized in that, The axial limiting structure (128) includes a limiting ring groove (1281) disposed on the core part (121) and a limiting block (1282) inserted into the limiting ring groove (1281). The limiting block (1282) and the limiting ring groove (1281) are engaged in a limiting fit along the axial direction of the core part (121).

8. The edge locking device for the LED display screen according to claim 1, characterized in that, The second driving member (15) includes a driving disc (151) rotatably disposed on the lock seat (11) and a third link (152) hinged between the driving disc (151) and the anti-rotation member (13). The driving disc (151) is sleeved on the lock cylinder (12). The lock seat (11) includes a mounting plate (111) located between the driving disc (151) and the anti-rotation member (13). The third link (152) is swayably disposed on the mounting plate (111). The driving disc (151) can anti-rotate with the second anti-rotation part (125). When the second driving member (15) is driven by the anti-rotation member (13), the anti-rotation member (13) rotates and drives the driving disc (151) to rotate in the opposite direction to the rotation direction of the anti-rotation member (13) through the third link (152), so that the core part (121) switches between the insertion position and the locking position.

9. The edge locking device of the LED display screen according to claim 8, characterized in that, The anti-rotation component (13) is connected to a third drive shaft (132), the first end of the third connecting rod (152) is provided with a third limiting elongated hole (153), the third drive shaft (132) is disposed in the third limiting elongated hole (153), the drive disc (151) is connected to a fourth drive shaft (156), the second end of the third connecting rod (152) is provided with a fourth limiting elongated hole (155), and the fourth drive shaft (156) is disposed in the fourth limiting elongated hole (155). 10.The edge locking device of the LED display screen according to claim 1, wherein, The side locking device of the LED display screen also includes a pulling component (31) disposed outside the lock seat (11) and a reset component (33) connected between the first drive member (14) and the lock seat (11). The reset component (33) applies a reset force to the first drive member (14) to maintain it in the retraction position. One end of the pulling component (31) is connected to the first drive member (14). The pulling component (31) applies a pulling force to the first drive member (14) in the direction of switching from the retraction position to the insertion position.

11. The edge locking device for an LED display screen according to claim 10, characterized in that, The pulling assembly (31) includes a pulling seat (311), a pulling plate (312), and a pulling line (313). The pulling seat (311) is disposed outside the lock seat (11). The pulling plate (312) is rotatably disposed on the pulling seat (311). The first end of the pulling line (313) is connected to the first driving member (14). The second end of the pulling line (313) is connected to the pulling plate (312) through a connecting shaft (314). The connecting shaft (314) and the rotation axis of the pulling plate (312) are spaced apart so that the second end of the pulling line (313) rotates around the rotation axis of the pulling plate (312). The pulling line (313) applies the pulling force to the first driving member (14). The pulling assembly (31) further includes a stop structure (32) spaced apart from the pulling seat (311). The stop structure (32) includes a stop seat (321) and a stop pin (322) movably disposed on the stop seat (321). The two ends of the pulling plate (312) are respectively provided with a first socket (315) and a second socket (316) that cooperate with the stop pin (322). The connecting shaft (314) is located between the rotation axis of the pulling plate (312) and the second socket (316). When the stop pin (322) is inserted into the first socket (315), the core part (121) is kept in the retraction position under the action of the reset force. When the stop pin (322) is inserted into the second socket (316), the core part (121) is kept in the locked position under the action of the pulling force.

12. An LED display screen, comprising a first LED frame (21), a second LED frame (22), and a side-locking device, characterized in that, The first LED frame (21) and the second LED frame (22) are arranged side by side or vertically. The side locking device is the side locking device of the LED display screen according to any one of claims 1 to 11. The side locking structure (10) of the side locking device is installed on the first side adjacent to the first LED frame (21) and the second LED frame (22). The second side adjacent to the first LED frame (21) of the second LED frame (22) is provided with a lock hole (23) through which the locking pin (122) of the side locking structure (10) passes. When the core part (121) is in the locked position, the locking pin (122) and the lock hole (23) are staggered and cooperate with the second side stop.

13. An LED display screen comprising a first LED frame (21), a second LED frame (22) and an edge lock device, characterized in that The first LED frame (21) and the second LED frame (22) are arranged side by side or vertically. The side locking device is the side locking device of the LED display screen as described in claim 11. The side locking structure (10) of the side locking device is installed on the first side adjacent to the first LED frame (21) and the second LED frame (22). The pulling component (31) of the side locking device is installed on the third side (211) of the first LED frame (21) adjacent to the first side.

Images