Connecting lock mechanism of LED display device and LED display device

Abstract

The application provides a connecting lock mechanism of an LED display device and the LED display device, wherein the connecting lock mechanism of the LED display device comprises a connecting lock, the connecting lock comprises a base, a lock body, a core body part has an insertion position of making a lock pin protrude from the base, a locking position of rotating a preset angle relative to the insertion position and a tension position of retracting a preset distance relative to the insertion position, a first driving piece, a transmission piece and a second driving piece movably arranged on the core body part, the second driving piece drives the first driving piece to rotate, on one hand, drives the transmission piece to rotate to drive the core body part to rotate from the insertion position to the locking position, on the other hand, drives the core body part to move from the insertion position to the tension position through the push-up structure and the push-up cooperation with the base, and when the core body part rotates to the locking position, the transmission piece is switched from being driven by the first driving piece to being static. The technical scheme of the application effectively solves the problem of obvious gaps between two adjacent LED boxes in the related art.

Description

Technical Field

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

[0002] LED display devices are electronic products that display certain electronic files on a screen through specific transmission equipment and then reflect them to the human eye. They have a wide range of applications in various fields of society and are a common electronic product that is widely known and used.

[0003] Large-size LED display devices are generally composed of multiple independent LED cabinets. When different numbers of LED cabinets are spliced ​​together to form a complete LED display device of different sizes, the LED cabinets are usually connected by bolts. During the assembly of several LED cabinets, there are obvious gaps between adjacent LED cabinets, resulting in poor display quality of the LED display device. Summary of the Invention

[0004] The main objective of this invention is to provide a connection locking mechanism for an LED display device and an LED display device in order to solve the problem of obvious gaps between two adjacent LED cabinets in related technologies.

[0005] To achieve the above objectives, according to one aspect of the present invention, a connection locking mechanism for an LED display device is provided. The connection locking mechanism includes a connection lock, comprising: a base; a lock body movably disposed within the base, the lock body including a core portion and a locking pin, a clearance portion, and a first anti-rotation portion sequentially spaced on the core portion; the core portion having an insertion position in which the locking pin extends out of the base, a locking position in which it rotates a preset angle relative to the insertion position, and a tensioning position in which it retracts a preset distance relative to the insertion position; and a first driving member rotatably disposed on the base. It is fitted outside the clearance part, and a pushing structure is provided between the first driving member and the base; the transmission member is rotatably mounted on the base and can cooperate with the first anti-rotation part to prevent rotation; the second driving member is movably mounted on the core part. The second driving member drives the first driving member to rotate, on the one hand driving the transmission member to rotate so as to drive the core part to rotate from the insertion position to the locking position, and on the other hand driving the core part to move from the insertion position to the tension position through the pushing structure and the pushing cooperation with the base. When the core part rotates to the locking position, the transmission member is switched from being driven by the first driving member to being stationary.

[0006] Furthermore, the base includes a base body and a cover plate disposed at a first opening through which the lock body passes in the base body. The cover plate is provided with a clearance opening to allow the lock body to pass through. The first driving member includes a driving disc sleeved outside the clearance portion and a first pushing inclined surface disposed on the driving disc. A second pushing inclined surface is disposed on the surface of the cover plate facing the driving disc. Both the first and second pushing inclined surfaces extend along the circumferential spiral reference line of the driving disc. The first and second pushing inclined surfaces form a pushing structure. When the first driving member rotates, it pushes and engages with the first and second pushing inclined surfaces to drive the core part to move from the insertion position to the tensioned position.

[0007] Furthermore, the transmission component includes a transmission disc rotatably mounted on the base and a first connecting rod hinged between the transmission disc and the first driving component. The transmission disc is sleeved on the lock body. The base includes a mounting plate located between the transmission disc and the first driving component. The first connecting rod is pivotally mounted on the mounting plate. The transmission disc can engage with the first anti-rotation part to prevent rotation. When the transmission component is driven by the first driving component, the first driving component rotates and drives the transmission disc to rotate in the opposite direction to the rotation direction of the first driving component through the first connecting rod, so that the core part switches between the insertion position and the tension position.

[0008] Furthermore, a first drive shaft is connected to the first drive member, and a third limiting elongated hole is provided on the first end of the first connecting rod. When the transmission member is driven by the first drive member, the first drive shaft is located inside the third limiting elongated hole. When the transmission member is stationary, the first drive shaft is located outside the third limiting elongated hole. A second drive shaft is connected to the transmission disc, and a fourth limiting elongated hole is provided on the second end of the first connecting rod. The second drive shaft is located inside the fourth limiting elongated hole.

[0009] Furthermore, the first drive shaft is fixedly mounted on the surface of the drive disc opposite to the first push-up inclined surface, and the third limiting elongated hole has a second opening for the first drive shaft to move in or out. When the transmission component is stationary, the first drive shaft moves out of the second opening.

[0010] Furthermore, the mounting plate is provided with a limiting arc-shaped hole for the second drive shaft to pass through. The first drive member has a connecting part that connects to the second drive member. When the second drive shaft is limited and engaged with the first side end wall of the limiting arc-shaped hole near the connecting part, the core part is in the insertion position. When the second drive shaft is limited and engaged with the second side end wall of the limiting arc-shaped hole away from the connecting part, the transmission member is stationary.

[0011] Furthermore, the second driving member includes a second connecting rod and a third connecting rod. The second connecting rod is hinged to the core part. A third driving shaft is connected to the first driving member. The first end of the third connecting rod is hinged to the second connecting rod. A second limiting elongated hole is provided on the second end of the third connecting rod. The third driving shaft is located in the second limiting elongated hole. The plane where the second limiting elongated hole is located is perpendicular to the axis of the core part. The second end of the third connecting rod drives the third driving shaft to move within the second limiting elongated hole.

[0012] Furthermore, the lock body also includes a second anti-rotation part disposed on the core portion, the second anti-rotation part being located on the side of the first anti-rotation part away from the clearance portion, the core portion also having a retracted position that retracts the locking pin into the base, the second driving member also being able to drive the core portion to move along the direction of the locking pin extension or retraction, when the core portion is in the retracted position, the second anti-rotation part and the first driving member are anti-rotating engaged, when the core portion is in the insertion position, the clearance portion and the first driving member are correspondingly engaged, and the transmission member and the first anti-rotation part are anti-rotating engaged; the connection lock mechanism of the LED display device also includes a pulling component disposed outside the base and a reset component connected between the second driving member and the base, the reset component applying a reset force to the second driving member to maintain it in the retracted position, one end of the pulling component being connected to the second driving member, the pulling component applying a pulling force to the second driving member in the direction of switching from the retracted position to the insertion position.

[0013] Furthermore, the pulling assembly includes a pulling base, a pulling plate, and a pulling line. The pulling base is disposed outside the base, and the pulling plate is rotatably disposed on the pulling base. The first end of the pulling line is connected to the second 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 second driving member. The pulling assembly also includes a stop structure spaced apart from the pulling base. The stop structure includes a stop seat and a stop pin movably disposed on the stop seat. The two ends of the pulling plate are respectively provided with a first bayonet and a second bayonet that cooperate with the stop pin. The connecting shaft is located between the rotation axis of the pulling plate and the second bayonet. When the stop pin is inserted into the first bayonet, the core part is held in the retracted position or the inserted position under the action of the restoring force. When the stop pin is inserted into the second bayonet, the core part is held in the tensioned position under the action of the pulling force.

[0014] According to another aspect of the present invention, an LED display device is provided, including a first LED housing, a second LED housing, and a connecting lock mechanism. The first LED housing and the second LED housing are arranged side by side or vertically. The connecting lock mechanism is the connecting lock mechanism of the aforementioned LED display device. The connecting lock of the connecting lock mechanism is installed on a first side adjacent to the first LED housing and the second LED housing. A second side adjacent to the first LED housing is provided with a lock hole through which the locking pin of the connecting lock passes. When the core part is in the locked position, the locking pin and the lock hole are staggered and cooperate with the stop on the second side.

[0015] According to another aspect of the present invention, an LED display device is provided, including a first LED housing, a second LED housing, and a connecting lock mechanism. The first LED housing and the second LED housing are arranged side by side or vertically. The connecting lock mechanism is the connecting lock mechanism of the LED display device described above. The connecting lock of the connecting lock mechanism is installed on a first side adjacent to the first LED housing and the second LED housing. The pulling component of the connecting lock mechanism is installed on a third side adjacent to the first side of the first LED housing.

[0016] According to the technical solution of this invention, the connection locking mechanism of an LED display device includes a connection lock, which can be installed on one adjacent side of two adjacent LED housings. The connection lock includes: a base, a lock body, a first driving member, a transmission member, and a second driving member. The lock body is movably disposed within the base. The lock body includes a core portion and a locking pin, a clearance portion, and a first anti-rotation portion sequentially spaced on the core portion. The core portion has an insertion position where the locking pin extends out of the base, a locking position where it rotates a preset angle relative to the insertion position, and a tensioning position where it retracts a preset distance relative to the insertion position. When the core portion is in the insertion position, the locking pin is inserted into another adjacent side of the two adjacent LED housings. The first driving member is rotatably disposed on the base and sleeved outside the clearance portion, and a pushing structure is provided between the first driving member and the base. The transmission member is rotatably disposed on the base and can engage with the first anti-rotation portion to prevent rotation. The second driving member is movably mounted on the core portion. The second driving member drives the first driving member to rotate, which in turn drives the transmission member to rotate the core portion from the insertion position to the locking position. At this time, the locking pin on the core portion is locked inside the other side. Simultaneously, through a pushing structure cooperating with the base, the core portion is driven to move from the insertion position to the tensioned position. When the core portion rotates to the locking position, the transmission member, previously driven by the first driving member, switches to a stationary position. The locking pin pulls one of the two adjacent sides of two adjacent LED cabinets closer to the other, or pushes the LED cabinet containing the base towards the adjacent LED cabinet, thereby locking the two adjacent LED cabinets together while reducing the gap between them. This facilitates adjustment of the LED cabinet positions, ensuring the display effect of the spliced ​​LED display device. Therefore, the technical solution of this application effectively solves the problem of significant gaps between adjacent LED cabinets in related technologies. Attached Figure Description

[0017] 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:

[0018] Figure 1A perspective structural schematic diagram of an embodiment of the connection locking mechanism of the LED display device according to the present invention is shown;

[0019] Figure 2 It shows Figure 1 A perspective view of the LED display device's connection locking mechanism after the cover plate has been removed;

[0020] Figure 3 It shows Figure 1 A three-dimensional structural diagram of the core part of the connection locking mechanism of the LED display device when it is in the insertion position;

[0021] Figure 4 It shows Figure 1 A three-dimensional structural diagram of the core part of the connection locking mechanism of the LED display device when it is in the locked position;

[0022] Figure 5 It shows Figure 1 A partial three-dimensional structural diagram of the core part of the connection locking mechanism of the LED display device when it is in the tensioned position;

[0023] Figure 6 It shows Figure 1 A three-dimensional structural diagram of the lock body and cover plate when the core of the connecting lock mechanism of the LED display device is in the insertion position;

[0024] Figure 7 It shows Figure 1 A partial perspective view of the core seat of the connection locking mechanism of the LED display device located inside the base;

[0025] Figure 8 It shows Figure 1 An exploded structural diagram of a portion of the connection lock mechanism of an LED display device;

[0026] Figure 9a It shows Figure 8 A three-dimensional structural diagram of the first driving component and the first connecting rod of the connection locking mechanism of the LED display device;

[0027] Figure 9b It shows Figure 8 A three-dimensional structural diagram of the first link and mounting plate of the connecting lock mechanism of the LED display device;

[0028] Figure 9c It shows Figure 8 A three-dimensional structural diagram of the mounting plate and transmission components of the connection locking mechanism of the LED display device;

[0029] Figure 10 It shows Figure 1 A three-dimensional structural diagram of the pulling component of the connecting lock mechanism of the LED display device;

[0030] Figure 11 It shows Figure 10 An exploded structural diagram of a portion of the pulling component of the connecting lock mechanism of an LED display device;

[0031] Figure 12 A three-dimensional structural schematic diagram of an embodiment of the LED display device according to the present invention is shown;

[0032] Figure 13 It shows Figure 12 A three-dimensional structural diagram of the first LED cabinet and the connecting lock mechanism of the LED display device;

[0033] Figure 14 It shows Figure 13 A partial enlarged view of point A on the LED display device;

[0034] Figure 15 It shows Figure 13 A magnified view of part B of the LED display device.

[0035] The above figures include the following reference numerals:

[0036] 10. Connecting lock;

[0037] 11. Base; 111. Mounting plate; 1111. Limiting arc-shaped hole; 112. Cover plate; 1121. Clearance hole; 113. Second pushing 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;

[0038] 12. Lock body; 121. Core part; 122. Locking pin; 123. Second anti-rotation part; 124. Clearance part; 125. First anti-rotation part; 126. Fourth drive shaft; 127. Core seat; 128. Axial limiting structure; 1281. Limiting ring groove; 1282. Limiting block;

[0039] 13. First driving component; 131. Third driving shaft; 132. First driving shaft; 133. Driving disc; 134. First pushing inclined surface;

[0040] 14. Second driving component; 141. Second connecting rod; 1411. First force-applying rod segment; 1412. First driving rod segment; 1413. First limiting elongated hole; 142. Third connecting rod; 1421. Second force-applying rod segment; 1422. Second driving rod segment; 1423. Second limiting elongated hole;

[0041] 15. Transmission component; 151. Transmission disc; 152. First connecting rod; 153. Third limiting elongated hole; 154. Second opening; 155. Fourth limiting elongated hole; 156. Second drive shaft; 16. Stop component;

[0042] 21. First LED cabinet; 211. Third side; 22. Second LED cabinet; 23. Lock hole;

[0043] 31. Pulling assembly; 311. Pulling seat; 312. Pulling plate; 313. Pulling line; 314. Connecting shaft; 315. First bayonet; 316. Second bayonet; 32. Stop structure; 321. Stop seat; 322. Stop pin; 323. Elastic element; 33. Reset element. Detailed Implementation

[0044] 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.

[0045] like Figures 1 to 15 As shown, the connection locking mechanism of the LED display device in this embodiment includes a connection lock 10. The connection lock 10 includes: a base 11, a lock body 12, a first driving member 13, a transmission member 15, and a second driving member 14. The lock body 12 is movably disposed within the base 11. The lock body 12 includes a core portion 121 and a locking pin 122, a clearance portion 124, and a first anti-rotation portion 125 sequentially spaced on the core portion 121. The core portion 121 has an insertion position where the locking pin 122 extends out of the base 11, a locking position where it rotates a preset angle relative to the insertion position, and a tensioning position where it retracts a preset distance relative to the insertion position. The first driving member 13 is rotatably disposed on the base 11 and sleeved outside the clearance portion 124. A pushing structure is provided between the first driving member 13 and the base 11. The transmission member 15 is rotatably disposed on the base 11 and can engage with the first anti-rotation portion 125 to prevent rotation. The second driving member 14 is movably mounted on the core portion 121. The second driving member 14 drives the first driving member 13 to rotate, thereby causing the transmission member 15 to rotate and rotate the core portion 121 from the insertion position to the locking position. Simultaneously, through a pushing structure and a push-pull mechanism with the base 11, the second driving member 14 drives the core portion 121 from the insertion position to the tensioned position. When the core portion 121 rotates to the locking position, the transmission member 15, previously driven by the first driving member 13, switches to a stationary position. The aforementioned preset angle satisfies a value greater than 0 degrees and less than 90 degrees.

[0046] Using the technical solution of this embodiment, the connecting lock of the LED display device's connecting lock mechanism can be installed on one adjacent side of two adjacent LED cabinets. When the core part 121 is in the insertion position, the locking pin is inserted into the other adjacent side of the two adjacent LED cabinets. The second driving member 14 drives the first driving member 13 to rotate, which on the one hand drives the transmission member 15 to rotate, thereby rotating the core part 121 from the insertion position to the locking position. At this time, the locking pin 122 on the core part is locked in the other side. On the other hand, the core part 121 is driven to move from the insertion position to the tensioned position by the pushing structure and the pushing cooperation with the base 11. When the core part 121 rotates to the locking position, the transmission member 15 is switched to a stationary position by being driven by the first driving member 13. Locking pin 122 pulls one of the two adjacent sides of two adjacent LED cabinets closer to the other, or pushes the LED cabinet containing base 11 to move towards an adjacent LED cabinet, thereby locking the two adjacent LED cabinets together while reducing the gap between them. This facilitates the adjustment of the LED cabinet positions and ensures the display effect of the spliced ​​LED display device. Therefore, the technical solution of this embodiment effectively solves the problem of obvious gaps between two adjacent LED cabinets in related technologies.

[0047] It should be noted that the direction of the locking pin's extension or retraction is determined by the location of the LED display device's connecting locking mechanism on the side of the LED cabinet. If the connecting locking mechanism is located on the left side of the LED cabinet, 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 cabinet, the direction is exactly the opposite of when it is located on the left side. If the connecting locking mechanism is located on the upper side of the LED cabinet, the extension direction is upward and the retraction direction is downward. If the connecting locking mechanism is located on the rear side of the LED cabinet, the extension direction is forward and the retraction direction is backward.

[0048] like Figures 1 to 9cAs shown, the base 11 includes a base body 115 and a cover plate 112 disposed at a first opening through which the lock body 12 passes in the base body 115. The cover plate 112 is provided with a clearance opening to allow the lock body 12 to pass through. The first driving member 13 includes a driving disk 133 sleeved outside the clearance portion 124 and a first pushing slope 134 disposed on the driving disk 133. A second pushing slope 113 is disposed on the surface of the cover plate 112 facing the driving disk 133. Both the first pushing slope 134 and the second pushing slope 113 extend along the circumferential spiral reference line of the driving disk 133. The first pushing slope 134 and the second pushing slope 113 form a pushing structure. When the first driving member 13 rotates, it pushes and engages with the first pushing slope 134 and the second pushing slope 113 to drive the core portion 121 to move from the insertion position to the tensioned position. In order for the lock body 12 to retract freely within the base 11 by a certain preset distance, the axial dimension of the clearance portion 124 is greater than the axial dimension of the drive disk 133 corresponding to the clearance portion 124.

[0049] like Figures 1 to 9c As shown, the base 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 base 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 device. 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 base 11.

[0050] like Figures 1 to 9c As shown, the transmission component 15 includes a transmission disk 151 rotatably mounted on the base 11 and a first connecting rod 152 hinged between the transmission disk 151 and the first driving component 13. The transmission disk 151 is sleeved on the outside of the lock body 12. The first connecting rod 152 enables the transmission disk 151 and the first driving component 13 to be linked. To install the first connecting rod 152 in the base 11, the base 11 includes a mounting plate 111 located between the transmission disk 151 and the first driving component 13. The first connecting rod 152 is pivotally mounted on the mounting plate 111. The transmission disk 151 can engage with the first anti-rotation part 125 to prevent rotation. When the transmission component 15 is driven by the first driving component 13, the first driving component 13 rotates and drives the transmission disk 151 to rotate in the opposite direction to the rotation direction of the first driving component 13 via the first connecting rod 152, so that the core part 121 switches between the insertion position and the tension position. The first connecting rod 152 is pivotally mounted on the mounting plate 111 via a swing shaft.

[0051] like Figures 1 to 9cAs shown, a first drive shaft 132 is connected to the first drive member 13. A third limiting elongated hole 153 is provided on the first end of the first connecting rod 152. When the transmission member 15 is driven by the first drive member 13, the first drive shaft 132 is located inside the third limiting elongated hole 153. When the transmission member 15 is stationary, the first 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 first drive shaft 132, facilitating the sliding of the first drive shaft 132 within the third limiting elongated hole 153. A second drive shaft 156 is connected to the transmission disc 151. A fourth limiting elongated hole 155 is provided on the second end of the first connecting rod 152, and the second 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 second drive shaft 156, facilitating the sliding of the second drive shaft 156 within the fourth limiting elongated hole 155.

[0052] like Figures 1 to 9c As shown, the first drive shaft 132 is fixedly mounted on the surface of the drive disc 133 facing away from the first pushing inclined surface 134. The third limiting elongated hole 153 has a second opening 154 for the first drive shaft 132 to move in or out. When the transmission member 15 is stationary, the first drive shaft 132 moves out of the second opening 154. In this way, the transmission member 15 is switched from being driven by the first drive member 13 to being stationary, preventing the transmission member 15 from continuing to rotate with the first drive member 13 via the first 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 first drive shaft is a telescopic shaft, which moves out of the third limiting elongated hole by retracting and avoidance, and is located outside the third limiting elongated hole by extending out of the stop.

[0053] like Figures 1 to 9c As shown, the mounting plate 111 is provided with a limiting arc-shaped hole 1111 for the second drive shaft 156 to pass through. The first drive member 13 has a connecting part that connects to the second drive member 14. When the second drive shaft 156 is limited and engaged with the first side end wall of the limiting arc-shaped hole 1111 near the connecting part, the core part 121 is in the insertion position. When the second drive shaft 156 is limited and engaged with the second side end wall of the limiting arc-shaped hole 1111 away from the connecting part, the transmission member 15 is stationary. This facilitates the first drive shaft 132 to move out of the second opening 154 and prevents the transmission member 15 from continuing to rotate with the first drive member 13 via the first connecting rod 152. The aforementioned connecting part is the third drive shaft 131 (see below) connected to the first drive member 13.

[0054] like Figures 1 to 9cAs shown, the second driving member 14 includes a second connecting rod 141 and a third connecting rod 142. The second connecting rod 141 is hinged to the core part 121. A third driving shaft 131 is connected to the first driving member 13, and the first end of the third connecting rod 142 is hinged to the second connecting rod 141. This facilitates the installation of the second driving member 14 and makes the first driving member 13 easy to drive, reducing operating effort. A second limiting elongated hole 1423 is provided on the second end of the third connecting rod 142. The third driving shaft 131 is located in the second limiting elongated hole 1423. The plane of the second limiting elongated hole 1423 is perpendicular to the axis of the core part 121. The second end of the third connecting rod 142 drives the third driving shaft 131 to move within the second limiting elongated hole 1423. The second limiting elongated hole 1423 restricts the range of movement of the third driving shaft 131, preventing the third driving shaft 131 from disengaging from the third connecting rod 142. Furthermore, the lock body 12 also includes a second anti-rotation part 123 disposed on the core part 121. The second anti-rotation part 123 is located on the side of the first anti-rotation part 125 away from the avoidance part 124. The core part 121 also has a retracted position that allows the locking pin 122 to retract into the base 11. The second driving member 14 can also drive the core part 121 to move along the direction of extension or retraction of the locking pin 122. When the core part 121 is in the retracted position, the second anti-rotation part 123 engages with the first driving member 13 to prevent rotation. When the core part 121 is in the insertion position, the avoidance part 124 engages with the first driving member 13, and the transmission member 15 engages with the first anti-rotation part 125 to prevent rotation.

[0055] Specifically, the anti-rotation engagement between the first driving member 13 and the second anti-rotation part 123 means that the first driving member 13 and the second anti-rotation part 123 are disposed on a mutually cooperating first anti-rotation plane. The anti-rotation engagement between the transmission member 15 and the first anti-rotation part 125 means that the transmission member 15 and the first anti-rotation part 125 are disposed on a mutually cooperating second anti-rotation plane. The clearance part 124 is a clearance ring groove.

[0056] In this embodiment, a fourth drive shaft 126 is connected to the core portion 121, and a first limiting elongated hole 1413 is provided on the second connecting rod 141. The fourth drive shaft 126 is disposed in the first limiting elongated hole 1413. The first limiting elongated hole 1413 restricts the movement range of the fourth drive shaft 126 and prevents the fourth drive shaft 126 from disengaging from the second connecting rod 141. The hinge between the second connecting rod 141 and the third connecting rod 142 makes it easy to apply force when the second driving member 14 drives the fourth drive shaft 126 to move, and the fourth drive shaft 126 is easily driven.

[0057] In this embodiment, the second end of the third link 142 drives the third drive shaft 131 to move within the second limiting elongated hole 1423, thereby switching the core portion 121 between the insertion position and the tension position. The second link 141 moves relative to the fourth drive shaft 126 through the first limiting elongated hole 1413. During the switching process between the insertion position and the tension position, the position of the fourth drive shaft 126 is stationary relative to the second link 141. The long axis of the first limiting elongated hole 1413 is perpendicular to the axis of the fourth drive shaft 126, and the position of the fourth drive shaft 126 does not interfere with the movement of the second link 141.

[0058] The major axis of the first limiting elongated hole 1413 is greater than its minor axis. The major axis of the second limiting elongated hole 1423 is greater than its minor axis. For example... Figures 1 to 11 As shown, to facilitate the application of force from the second link 141 to the third link 142, so that the third link 142 drives the third drive shaft 131 to move within the second limiting elongated hole 1423, the second 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 third 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 fourth 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 third link 142 drives the third drive shaft 131 to move within the second limiting elongated hole 1423, so that the core part 121 switches between the inserted position and the tensioned position. The second link 141 moves relative to the fourth drive shaft 126 through the first limiting elongated hole 1413. During the switching between the insertion position and the tension position of the core part 121, the position of the fourth drive shaft 126 is stationary relative to the second link 141, the long axis of the first limiting elongated hole 1413 is perpendicular to the axis of the fourth drive shaft 126, and the position of the fourth drive shaft 126 does not interfere with the movement of the second link 141.

[0059] like Figures 1 to 9c As shown, to facilitate the application of force from the third link 142 to the third drive shaft 131, thereby causing the third drive shaft 131 to drive the first drive member 13 to rotate, the third link 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. 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. The second force-applying rod segment 1421 and the first force-applying rod segment 1411 are hinged together by a hinge pin.

[0060] 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.

[0061] like Figures 1 to 9c As shown, the 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 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 first driving member 13 and a second arcuate concave surface 1172 that can slide with the transmission member 15. In this way, the first driving member 13 and the transmission member 15 rotate more smoothly within the mounting channel 117.

[0062] like Figures 1 to 9c As shown, a stop 16 is provided on the installation channel 117, and the transmission member 15 and the first driving member 13 are located between the stop 16 and the cover plate 112. In this way, the transmission member 15 and the first driving member 13 are limited between the stop 16 and the cover plate 112, preventing the transmission member 15 and the first driving 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 second anti-rotation part 123 can engage with the first driving member 13 to prevent rotation, and the transmission member 15 engages with the clearance part 124 to avoid rotation; when the core portion 121 is in the insertion position, the clearance part 124 engages with the first driving member 13, and the transmission member 15 engages with the first anti-rotation part 125 to prevent rotation, allowing the core portion 121 to rotate relative to itself. The stop 16 is preferably a convex block.

[0063] like Figures 1 to 9cAs shown, the 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 body 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 part 121 away from the locking pin 122 via an axial limiting structure 128. The core part 121 is rotatably disposed relative to the core seat 127. The axial limiting structure 128 prevents the core part 121 from axially moving on the core seat 127, so that the core part 121 can only rotate relative to the core seat 127. The second driving member 14 is movably disposed on the core part 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 fourth drive shaft 126 is fixedly connected to the core seat 127. During the switching between the inserted and locked positions, the fourth drive shaft 126 can remain stationary relative to the second 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 second drive member 14 drives the first drive member 13 to rotate, thereby causing the transmission member 15 and the core part 121 to rotate together.

[0064] 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.

[0065] like Figures 1 to 11 As shown, the connection locking mechanism of the LED display device also includes a pulling component 31 disposed outside the base 11 and a resetting component 33 connected between the second driving member 14 and the base 11. The resetting component 33 applies a resetting force to the second driving member 14 to maintain it in the retracted position. Thus, under the action of the resetting force of the resetting component 33, the second driving member 14 can automatically reset to the retracted position. One end of the pulling component 31 is connected to the second driving member 14, and the pulling component 31 applies a pulling force to the second 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 maintained in the locked position or the tightened position, preventing the second driving member 14 from switching from the locked position to the retracted position, avoiding the lock body 12 from loosening, and reducing the possibility of safety accidents. In this embodiment, the resetting component 33 is preferably a tension spring.

[0066] like Figures 1 to 11As shown, the second link 141 is designed to apply force to the third link 142 so that the third link 142 drives the third drive shaft 131 to move within the second limiting elongated hole 1423. The second link 141 includes a first force-applying rod segment 1411 and a first drive rod segment 1412 that are fixedly connected at an angle. The first end of the third 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 to drive the fourth 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 third link 142 drives the third 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 tension position. The second link 141 moves relative to the fourth 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 fourth drive shaft 126 is stationary relative to the second link 141. The long axis of the first limiting elongated hole 1413 is perpendicular to the axis of the fourth drive shaft 126, and the position of the fourth drive shaft 126 does not interfere with the movement of the second link 141.

[0067] like Figures 1 to 11 As shown, to facilitate the application of force from the third link 142 to the third drive shaft 131, so that the third drive shaft 131 drives the first drive member 13 to rotate, the third link 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.

[0068] like Figures 1 to 11 As shown, the process by which the core part 121 moves from the retracted position to the insertion position, then rotates from the insertion position through the locking position and moves to the tensioning position is as follows:

[0069] When the pulling assembly 31 pulls the first force-applying rod segment 1411 of the second driving member 14 to swing around the hinge axis, it drives the first driving rod segment 1412 to swing. This pushes the fourth driving shaft 126 through the first limiting elongated hole 1413 on the first driving rod segment 1412, thereby driving the fourth 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 fourth driving shaft 126 drives the core part 121 to move along its axis from the retracted position to the insertion position. When the fourth driving shaft 126 reaches the second limiting position, the core part 121 is in the insertion position. During this process, the third connecting rod 142 remains stationary.

[0070] 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 second 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 fourth driving shaft 126 and the core seat 127 no longer move. At the same time, the fourth 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 fourth driving shaft 126 through the first limiting elongated hole 1413, and the core part 121 can rotate relative to the core seat 127.

[0071] 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 third drive shaft 131. When the third drive shaft 131 moves within the second limiting elongated hole 1423, it drives the first drive member 13 to rotate. On the one hand, the first drive member 13 drives the transmission disk 151 to rotate in the opposite direction to the rotation direction of the first drive member 13 through the first connecting rod 152, so that the core part 121 rotates from the insertion position to the locking position. On the other hand, the first drive member 13 pushes the base 11 to move through the first pushing inclined surface 134 and the second pushing inclined surface 113, so that the core part 121 moves from the insertion position to the tensioning position.

[0072] During the process of the first driving member 13 driving the transmission disk 151 to rotate in the opposite direction to the rotation direction of the first driving member 13 via the first connecting rod 152: the drive disk 133 rotates and abuts against the side wall of the third limiting elongated hole 153 through the first driving shaft 132, so as to drive the first end of the first connecting rod 152 to swing around the swing shaft, so that the side wall of the fourth limiting elongated hole 155 on the first connecting rod 152 abuts against the second driving shaft 156 and drives the second driving shaft 156. The second driving shaft 156 rotates to drive the transmission disk 151 to rotate in the opposite direction to the rotation direction of the drive disk 133. When the second driving 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 third driving shaft 131, the second driving shaft 156 stops rotating, the transmission disk 151 is stationary, and at this time the core part 121 reaches the locked position.

[0073] During the process of the first driving member 13 pushing the base 11 to move through the first pushing inclined surface 134 and the second pushing inclined surface 113: when the driving disk 133 rotates, the first pushing inclined surface 134 and the second pushing inclined surface 113 on the driving disk 133 push and engage to push the cover plate 112 to move in the direction in which the core part 121 can extend. During this process, the first driving shaft 132 disengages from the second opening 154 and no longer drives the first 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 driving disk 133 only drives the base 11 to move until the two adjacent LED boxes 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.

[0074] like Figures 1 to 11As shown, 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 base 11, and the pulling plate 312 is rotatably disposed on the pulling seat 311. The first end of the pulling line 313 is connected to the second driving member 14, and 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 a pulling force to the second driving member 14. In this way, the pull plate 312 rotates on the pull base 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 second 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 second 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.

[0075] like Figures 1 to 11 As shown, the pulling assembly 31 also 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 latch 315 and a second latch 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 latch 316. When the resetting force drives the pulling plate 312 to rotate counterclockwise around its rotation axis, and when it rotates to the position corresponding to the stop pin 322 and the first latch 315, when the stop pin 322 is inserted into the first latch 315, the core part 121 is held in the retracted position under the action of the resetting 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 latch 316, the core part 121 is held in the tensioned position under the action of the pulling force when the stop pin 322 is inserted into the second latch 316. In this embodiment, the pull plate 312 can rotate 180 degrees. When the first latch 315 and the second latch 316 on the pull plate 312 are respectively engaged with the stop pin 322, it is convenient for the core part 121 to switch between the retracted position and the tensioned position, which is convenient to operate and easy to implement. Moreover, when the core part 121 is held in the tensioned position, it can enhance the stability of the locking mechanism of the LED display device during the insertion and engagement. At the same time, when the core part 121 is held in the retracted position, the locking mechanism of the LED display device will not loosen on the LED housing, which can enhance the stability of the installation.

[0076] Of course, in the embodiment not shown in the figure, when the core is in the insertion position, it is stopped by the anti-retraction member on the base, and the core is kept in the insertion position under the action of the reset force.

[0077] 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 rotation of the pulling plate 312 180 degrees, when the stop pin 322 is manually driven or when the stop pin 322 is squeezed by the pulling plate 312, the stop pin 322 retracts 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 latch 315 or the second latch 316, the stop pin 322 can be inserted into the first latch 315 or the second latch 316 under the action of the spring force.

[0078] This application also provides an LED display device, such as... Figures 1 to 5 as well as Figures 12 to 15 As shown, the LED display device of this embodiment includes a first LED housing 21, a second LED housing 22, and a connecting locking mechanism. The first LED housing 21 and the second LED housing 22 are arranged side by side or vertically, and the connecting locking mechanism is the connecting locking mechanism of the LED display device described above. Since the connecting locking mechanism of the LED display device described above can solve the problem of obvious gaps between adjacent LED housings in related technologies, the LED display device with this connecting locking mechanism can solve the same technical problem.

[0079] like Figures 1 to 5 as well as Figures 12 to 15 As shown, the connecting lock 10 of the connecting lock mechanism is installed on the first side adjacent to the first LED box 21 and the second LED box 22. The second side adjacent to the first LED box 21 of the second LED box 22 is provided with a lock hole 23 for the locking pin 122 of the connecting lock 10 to pass through. 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 stop on the second side.

[0080] This application also provides an LED display device, such as... Figures 1 to 5 as well as Figures 12 to 15As shown, the LED display device of this embodiment includes a first LED housing 21, a second LED housing 22, and a connecting lock mechanism. The first LED housing 21 and the second LED housing 22 are arranged side by side or vertically. The connecting lock mechanism is the connecting lock mechanism of the LED display device described above. The connecting lock 10 of the connecting lock mechanism is installed on the first side adjacent to the first LED housing 21 and the second LED housing 22. The pulling component 31 of the connecting lock mechanism is installed on the third side 211 of the first LED housing 21 adjacent to the first side.

[0081] 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 housing 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 housing 21 through the first through hole, which facilitates manual driving of the other end of the pull plate 312 to rotate it to a position where the first latch 315 or the second latch 316 on the pull plate 312 corresponds to the stop pin 322.

[0082] 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.

[0083] 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.

[0084] The above description is merely a preferred embodiment of the present invention and is not intended to limit the 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 connection locking mechanism for an LED display device, characterized in that, The connection locking mechanism of the LED display device includes a connection lock (10), the connection lock (10) comprising: Base (11); The lock body (12) is movably disposed within the base (11). The lock body (12) includes a core part (121) and a locking pin (122), a clearance part (124), and a first anti-rotation part (125) arranged sequentially at intervals on the core part (121). The core part (121) has an insertion position in which the locking pin (122) extends out of the base (11), a locking position in which it rotates a preset angle relative to the insertion position, and a tensioning position in which it retracts a preset distance relative to the insertion position. The first driving member (13) is rotatably mounted on the base (11) and sleeved outside the clearance part (124). A pushing structure is provided between the first driving member (13) and the base (11). The transmission component (15) is rotatably mounted on the base (11) and can engage with the first anti-rotation part (125) to prevent rotation. The second driving member (14) is movably disposed on the core part (121). The second driving member (14) drives the first driving member (13) to rotate. On the one hand, it drives the transmission member (15) to rotate so that the core part (121) rotates from the insertion position to the locking position. On the other hand, it drives the core part (121) to move from the insertion position to the tensioning position by pushing and cooperating with the base (11) through the pushing structure. When the core part (121) rotates to the locking position, the transmission member (15) is switched to a stationary position by being driven by the first driving member (13).

2. The connection locking mechanism of the LED display device according to claim 1, characterized in that, The base (11) includes a base body (115) and a cover plate (112) disposed on the base body (115) for the lock body (12) to pass through. The cover plate (112) is provided with a clearance opening to avoid the lock body (12). The first driving member (13) includes a driving disk (133) sleeved on the clearance part (124) and a first pushing inclined surface (134) disposed on the driving disk (133). The surface of the cover plate (112) facing the driving disk (133) A second push-up slope (113) is provided. Both the first push-up slope (134) and the second push-up slope (113) extend along the circumferential spiral reference line of the drive disk (133). The first push-up slope (134) and the second push-up slope (113) form the push-up structure. When the first drive member (13) rotates, it pushes and engages with the first push-up slope (134) and the second push-up slope (113) to drive the core part (121) to move from the insertion position to the tensioning position.

3. The connection locking mechanism of the LED display device according to claim 2, characterized in that, The transmission component (15) includes a transmission disk (151) rotatably mounted on the base (11) and a first connecting rod (152) hinged between the transmission disk (151) and the first driving component (13). The transmission disk (151) is sleeved outside the lock body (12). The base (11) includes a mounting plate (111) located between the transmission disk (151) and the first driving component (13). The first connecting rod (152) is swayably mounted on the mounting plate (111). The transmission disk (151) can engage with the first anti-rotation part (125) to prevent rotation. When the transmission component (15) is driven by the first driving component (13), the first driving component (13) rotates and drives the transmission disk (151) to rotate in the opposite direction to the rotation direction of the first driving component (13) through the first connecting rod (152), so that the core part (121) switches between the insertion position and the tensioning position.

4. The connection locking mechanism of the LED display device according to claim 3, characterized in that, The first drive member (13) is connected to a first drive shaft (132), and the first end of the first connecting rod (152) is provided with a third limiting elongated hole (153). When the transmission member (15) is driven by the first drive member (13), the first drive shaft (132) is located inside the third limiting elongated hole (153). When the transmission member (15) is stationary, the first drive shaft (132) is located outside the third limiting elongated hole (153). The transmission disc (151) is connected to a second drive shaft (156), and the second end of the first connecting rod (152) is provided with a fourth limiting elongated hole (155). The second drive shaft (156) is located inside the fourth limiting elongated hole (155).

5. The connection locking mechanism of the LED display device according to claim 4, characterized in that, The first drive shaft (132) is fixedly disposed on the surface of the drive disk (133) away from the first push inclined surface (134). The third limiting elongated hole (153) has a second opening (154) for the first drive shaft (132) to move in or out. When the transmission member (15) is stationary, the first drive shaft (132) moves out of the second opening (154).

6. The connection locking mechanism of the LED display device according to claim 4, characterized in that, The mounting plate (111) is provided with a limiting arc-shaped hole (1111) through which the second drive shaft (156) passes. The first drive member (13) has a connecting part that is connected to the second drive member (14). When the second drive shaft (156) is limited and engaged with the first side end wall of the limiting arc-shaped hole (1111) near the connecting part, the core part (121) is in the insertion position. When the second drive shaft (156) is limited and engaged with the second side end wall of the limiting arc-shaped hole (1111) away from the connecting part, the transmission member (15) is stationary.

7. The connection locking mechanism of the LED display device according to claim 4, characterized in that, The second driving member (14) includes a second connecting rod (141) and a third connecting rod (142). The second connecting rod (141) is hinged to the core part (121). A third driving shaft (131) is connected to the first driving member (13). The first end of the third connecting rod (142) is hinged to the second connecting rod (141). A second limiting elongated hole (1423) is provided on the second end of the third connecting rod (142). The third driving shaft (131) is located in the second limiting elongated hole (1423). The plane where the second limiting elongated hole (1423) is located is perpendicular to the axis of the core part (121). The second end of the third connecting rod (142) drives the third driving shaft (131) to move within the second limiting elongated hole (1423).

8. The connection locking mechanism of the LED display device according to claim 1, characterized in that, The lock body (12) further includes a second anti-rotation part (123) disposed on the core part (121), the second anti-rotation part (123) being located on the side of the first anti-rotation part (125) away from the avoidance part (124), and the core part (121) also having a retractable position for retracting the locking pin (122) into the base (11). The second driving member (14) can also drive 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 second anti-rotation part (123) is anti-rotating with the first driving member (13). When the core part (121) is in the insertion position, the clearance part (124) is correspondingly engaged with the first driving member (13), and the transmission member (15) is anti-rotating with the first anti-rotation part (125). The connection locking mechanism of the LED display device further includes a pulling component (31) disposed outside the base (11) and a reset component (33) connected between the second drive member (14) and the base (11). The reset component (33) applies a reset force to the second drive member (14) to maintain it in the retracted position. One end of the pulling component (31) is connected to the second drive member (14). The pulling component (31) applies a pulling force to the second drive member (14) to switch from the retracted position to the insertion position.

9. The connection locking mechanism of the LED display device according to claim 8, 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 base (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 second 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 second 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 bayonet (315) and a second bayonet (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 bayonet (316). When the stop pin (322) is inserted into the first bayonet (315), the core part (121) is kept in the retracted position or the inserted position under the action of the reset force. When the stop pin (322) is inserted into the second bayonet (316), the core part (121) is kept in the tensioned position under the action of the pulling force.

10. An LED display device, comprising a first LED housing (21), a second LED housing (22), and a connecting lock mechanism, characterized in that, The first LED housing (21) and the second LED housing (22) are arranged side by side or vertically. The connecting lock mechanism is the connecting lock mechanism of the LED display device according to any one of claims 1 to 9. The connecting lock (10) of the connecting lock mechanism is installed on the first side adjacent to the first LED housing (21) and the second LED housing (22). The second side adjacent to the first LED housing (21) of the second LED housing (22) is provided with a lock hole (23) through which the locking pin (122) of the connecting lock (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.

11. An LED display device, comprising a first LED housing (21), a second LED housing (22), and a connecting lock mechanism, characterized in that, The first LED housing (21) and the second LED housing (22) are arranged side by side or vertically. The connecting lock mechanism is the connecting lock mechanism of the LED display device as described in claim 8 or 9. The connecting lock (10) of the connecting lock mechanism is installed on the first side adjacent to the first LED housing (21) and the second LED housing (22). The pulling component (31) of the connecting lock mechanism is installed on the third side (211) of the first LED housing (21) adjacent to the first side.

Images