Connecting device and LED display device having the same

Abstract

The application provides a connecting device and an LED display device with the same, wherein the connecting device comprises: a first seat body and a second seat body which are adjacently arranged and can move away from or close to each other; a rotating disc which is rotatably arranged at the adjacent corner of the first seat body and the second seat body; a first end of a first connecting rod is drivingly connected with the rotating disc, and a second end of the first connecting rod is hingedly connected with the first seat body; a first end of a second connecting rod is drivingly connected with the rotating disc, and a second end of the second connecting rod is hingedly connected with the second seat body, and the middle part of the second connecting rod is hingedly connected with the middle part of the first connecting rod; the rotating disc rotates to drive the first connecting rod and the second connecting rod to relatively swing and make the first seat body and the second seat body move away from or close to each other. The technical scheme of the application effectively solves the problem that the display effect of the display screen is poor due to the different gap sizes between the display units when the display units are spliced in the related art.

Description

Technical Field

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

[0002] In recent years, the application of display screen assembly has become increasingly widespread, with extensive use in stages, commercial performances, and exhibitions. When the display area is large, it may be necessary to splice dozens or even hundreds of display units to form a large display screen.

[0003] In related technologies, during splicing, two adjacent display units are locked together by installing locks. When splicing large areas, the gaps between multiple display units are of different sizes, which can lead to poor display effects. Summary of the Invention

[0004] The main objective of this invention is to provide a connecting device and an LED display device having the same, so as to solve the problem in the related art that when display units are spliced ​​together, the gaps between display units are of different sizes, resulting in poor display effect of the display screen.

[0005] To achieve the above objectives, according to one aspect of the present invention, a connecting device is provided, comprising: a first base and a second base, the first base and the second base being disposed adjacent to each other and capable of moving away from or towards each other; a first connector and a second connector, the first connector being disposed on the first base and the second connector being disposed on the second base; a rotating disk rotatably disposed at adjacent corners of the first base and the second base; a first link, a first end of the first link being drivenly connected to the rotating disk and a second end of the first link being hinged to the first base; a second link, a first end of the second link being drivenly connected to the rotating disk and a second end of the second link being hinged to the second base, and a middle portion of the second link being hinged to the middle portion of the first link; wherein the rotating disk rotates to cause the first link and the second link to swing relative to each other, thereby causing the first base and the second base to move closer to or away from each other.

[0006] Furthermore, the connecting device also includes a third seat, a fourth seat, a third link, a fourth link, a third connector, and a fourth connector. The third and fourth seats are arranged adjacent to each other, the third seat is adjacent to the first seat, and the fourth seat is adjacent to the second seat. The rotating disk is located at the center of the first, second, third, and fourth seats. The first end of the third link is driven to the rotating disk, and the second end of the third link is hinged to the third seat. The first end of the fourth link is driven to the rotating disk, and the second end of the fourth link is hinged to the fourth seat. The middle part of the fourth link is hinged to the middle part of the third link. The rotation of the rotating disk causes the first, second, third, and fourth links to swing so that the first and second seats move closer to each other or further away, and the third and fourth seats move closer to each other or further away. The third connector is disposed on the third seat, and the fourth connector is disposed on the fourth seat.

[0007] Furthermore, the rotating disk is provided with a first arc-shaped groove, a second arc-shaped groove, a third arc-shaped groove, and a fourth arc-shaped groove spaced circumferentially thereon. A first connecting rod has a first pin that slides within the first arc-shaped groove at its first end; a second connecting rod has a second pin that slides within the second arc-shaped groove at its first end; a third connecting rod has a third pin that slides within the third arc-shaped groove at its first end; and a fourth connecting rod has a fourth pin that slides within the fourth arc-shaped groove at its first end. The distance between the first end of the first arc-shaped groove and the center of the rotating disk is greater than the distance between the second end of the first arc-shaped groove and the center of the rotating disk. The distance between the second end of the second arc-shaped groove and the first arc-shaped groove is greater than the distance between the second end of the first arc-shaped groove and the center of the rotating disk. The first and second ends of the first and third arc-shaped grooves are adjacent to each other. The distance between the first end of the second arc-shaped groove and the center of the rotating disk is greater than the distance between the second end of the second arc-shaped groove and the center of the rotating disk. The first end of the third arc-shaped groove and the second end of the third arc-shaped groove are adjacent to each other. The distance between the first end of the third arc-shaped groove and the center of the rotating disk is greater than the distance between the second end of the third arc-shaped groove and the center of the rotating disk. The first end of the second arc-shaped groove and the second end of the fourth arc-shaped groove are adjacent to each other.

[0008] Furthermore, the connecting device also includes a fifth link and a sixth link. The first end of the fifth link is hinged to the second pin, and the second end of the fifth link is hinged to the third seat. The first end of the sixth link is hinged to the fourth pin, and the second end of the sixth link is hinged to the first seat. The middle part of the sixth link is hinged to the middle part of the fifth link. The hinge points of the first link and the sixth link with the first seat are staggered, and the hinge points of the third link and the fifth link with the third seat are also staggered.

[0009] Furthermore, the connecting device also includes a seventh link and an eighth link. The first end of the seventh link is hinged to the first pin, and the second end of the seventh link is hinged to the fourth seat. The first end of the eighth link is hinged to the third pin, and the second end of the eighth link is hinged to the second seat. The middle part of the eighth link and the middle part of the seventh link are hinged together. The hinge points of the eighth link and the second link with the second seat are staggered. The hinge points of the seventh link and the fourth link with the fourth seat are also staggered.

[0010] Furthermore, the connecting device also includes a driving component, which is driven to rotate the rotating disk.

[0011] Furthermore, the driving component includes a knob, which includes a rotating head and a rotating rod connected to the rotating head, and an anti-rotation structure is provided between the rotating rod and the rotating disk.

[0012] Furthermore, the anti-rotation structure includes a limiting hole and a limiting block adapted to the shape of the limiting hole. The limiting block is inserted into the limiting hole. One of the limiting hole and the limiting block is located on the side of the rotating rod away from the rotating head, and the other of the limiting hole and the limiting block is located at the center of the rotating disk.

[0013] Furthermore, a first recess is provided on the edge of the first seat facing the second and third seats, a second recess is provided on the edge of the second seat facing the first and fourth seats, a third recess is provided on the edge of the third seat facing the first and fourth seats, and a fourth recess is provided on the edge of the fourth seat facing the second and third seats. The first, second, third, and fourth recesses form a cross-shaped cavity. The first and second connecting rods are disposed in the first and second recesses, the third and fourth connecting rods are disposed in the third and fourth recesses, the fifth and sixth connecting rods are disposed in the first and fourth recesses, and the seventh and eighth connecting rods are disposed between the second and fourth recesses.

[0014] Further, the first connecting member includes a first connecting cylinder and a first push rod, the first push rod being able to drive the first connecting cylinder to rotate, a first locking block being provided on the inner wall of the first connecting cylinder, the first connecting cylinder passing through the first base body, and the first push rod being located below the first base body; the second connecting member includes a second connecting cylinder and a second push rod, the second push rod being able to drive the second connecting cylinder to rotate, a second locking block being provided on the inner wall of the second connecting cylinder, the second connecting cylinder passing through the second base body, and the second push rod being located below the second base body; the third connecting member includes a third connecting cylinder and a third push rod, the third push rod being able to drive the third connecting cylinder to rotate, a third locking block being provided on the inner wall of the third connecting cylinder, the third connecting cylinder passing through the third base body, and the third push rod being located below the third base body; the fourth connecting member includes a fourth connecting cylinder and a fourth push rod, the fourth push rod being able to drive the fourth connecting cylinder to rotate, a fourth locking block being provided on the inner wall of the fourth connecting cylinder, the fourth connecting cylinder passing through the fourth base body, and the fourth push rod being located below the fourth base body.

[0015] Furthermore, the connecting device also includes a first cover, a second cover, a third cover, and a fourth cover. The first cover is disposed below the first seat and located between the first push rod and the first seat. The second cover is disposed below the second seat and located between the second seat and the second push rod. The third cover is disposed below the third seat and located between the third seat and the third push rod. The fourth cover is disposed below the fourth seat and located between the fourth seat and the fourth push rod.

[0016] Furthermore, a first positioning block is provided on the first cover, a second positioning block is provided on the second cover, a third positioning block is provided on the third cover, and a fourth positioning block is provided on the fourth cover. The first positioning block, the second positioning block, the third positioning block, and the fourth positioning block enclose a positioning space, and the rotating rod is located within the positioning space.

[0017] According to another aspect of the present invention, an LED display device is provided, comprising a plurality of LED display units and a plurality of connecting devices, each connecting device corresponding to a plurality of LED display units, and the connecting devices being the aforementioned connecting devices.

[0018] Applying the technical solution of this invention, a first base and a second base are arranged adjacent to each other. A rotating disk is rotatably disposed at the adjacent corner of the first base and the second base. The first end of a first connecting rod is driven to the rotating disk, and the second end of the first connecting rod is hinged to the first base. The first end of a second connecting rod is driven to the rotating disk, and the second end of the second connecting rod is hinged to the second base. The middle portions of the first and second connecting rods are hinged together. When the rotating disk rotates, it can cause the first and second connecting rods to swing relative to each other, thereby causing the first base and the second base to move closer to or further away from each other. A first connecting member is disposed on the first base, and a second connecting member is disposed on the second base. The first connecting member and the second connecting member can connect two adjacent display units. With the above-described configuration, the first and second connecting members enable the first and second bases to connect with two adjacent display units. This drives the rotating disk to rotate, causing the first and second connecting rods to swing, which in turn moves the first and second bases closer together or further apart. This pulls or pushes the adjacent display units closer or further apart, adjusting the distance between them. Furthermore, the first and second connecting members fix the adjacent display units together, ensuring connection while adjusting the gap between them. This results in uniform gaps between any two adjacent display units when multiple display units are spliced, thus guaranteeing a good display effect. Therefore, the technical solution of this application effectively solves the problem in related technologies where inconsistent gap sizes between display units lead to poor display quality. Attached Figure Description

[0019] 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:

[0020] Figure 1 An exploded structural schematic diagram of an embodiment of the connecting device according to the present invention is shown;

[0021] Figure 2 It shows Figure 1 An exploded structural diagram of part of the connecting device.

[0022] Figure 3 It shows Figure 1 Rear view of the connecting device;

[0023] Figure 4 It shows Figure 3 A schematic diagram showing the minimum adjustment distance of the connecting device;

[0024] Figure 5 It shows Figure 3 A schematic diagram showing the maximum adjustable distance of the connecting device;

[0025] Figure 6 It shows Figure 3 A schematic diagram of the movement mode of the connecting device;

[0026] Figure 7 It shows Figure 2 A top view of the rotating disk of the connecting device;

[0027] Figure 8 It shows Figure 1 A bottom view of part of the structure of the connecting device;

[0028] Figure 9 It shows Figure 1 A three-dimensional structural diagram of the driving component of the connecting device;

[0029] Figure 10 A rear view schematic diagram of an embodiment of an LED display device according to the present invention is shown.

[0030] The above figures include the following reference numerals:

[0031] 11. First seat; 111. First recess; 12. Second seat; 121. Second recess; 13. Third seat; 131. Third recess; 14. Fourth seat; 141. Fourth recess; 21. First connector; 211. First connecting cylinder; 2111. First locking block; 212. First push rod; 22. Second connector; 221. Second connecting cylinder; 2211. Second locking block; 222. Second push rod; 23. Third connector; 231. Third connecting cylinder; 2311. Third locking block; 232. Third push rod; 24. Fourth connector; 241. Fourth connecting cylinder; 2411. Fourth locking block; 242. Fourth push rod; 30. Rotating disk; 31. First arc-shaped groove; 32. 33. Third arc-shaped groove; 34. Fourth arc-shaped groove; 41. First connecting rod; 411. First pin; 42. Second connecting rod; 421. Second pin; 43. Third connecting rod; 431. Third pin; 44. Fourth connecting rod; 441. Fourth pin; 45. Fifth connecting rod; 46. Sixth connecting rod; 47. Seventh connecting rod; 48. Eighth connecting rod; 50. Driving component; 51. Knob; 511. Rotating head; 512. Rotating rod; 60. Anti-rotation structure; 61. Limiting hole; 62. Limiting block; 71. First cover; 711. First positioning block; 72. Second cover; 721. Second positioning block; 73. Third cover; 731. Third positioning block; 74. Fourth cover; 741. Fourth positioning block. Detailed Implementation

[0032] 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.

[0033] like Figures 1 to 6 As shown, in this embodiment, the connecting device includes: a first base 11, a second base 12, a first connector 21, a second connector 22, a rotating disk 30, a first connecting rod 41, and a second connecting rod 42. The first base 11 and the second base 12 are arranged adjacent to each other and can move away from or towards each other. The first connector 21 is disposed on the first base 11, and the second connector 22 is disposed on the second base 12. The rotating disk 30 is rotatably disposed at adjacent corners of the first base 11 and the second base 12. The first end of the first connecting rod 41 is driven to connect with the rotating disk 30, and the second end of the first connecting rod 41 is hinged to the first base 11. The first end of the second connecting rod 42 is driven to connect with the rotating disk 30, the second end of the second connecting rod 42 is hinged to the second base 12, and the middle part of the second connecting rod 42 is hinged to the middle part of the first connecting rod 41. The rotating disk 30 rotates to cause the first connecting rod 41 and the second connecting rod 42 to swing relative to each other, causing the first base 11 and the second base 12 to move closer to or further away from each other.

[0034] In this embodiment, the first base 11 and the second base 12 are arranged adjacent to each other. The rotating disk 30 is rotatably disposed at the adjacent corner of the first base 11 and the second base 12. The first end of the first connecting rod 41 is driven to connect with the rotating disk 30, and the second end of the first connecting rod 41 is hinged to the first base 11. The first end of the second connecting rod 42 is driven to connect with the rotating disk 30, and the second end of the second connecting rod 42 is hinged to the second base 12. The middle portions of the first connecting rod 41 and the second connecting rod 42 are hinged together. When the rotating disk 30 rotates, it can cause the first connecting rod 41 and the second connecting rod 42 to swing relative to each other, thereby causing the first base 11 and the second base 12 to move closer to or further away from each other. A first connecting member 21 is disposed on the first base 11, and a second connecting member 22 is disposed on the second base 12. The first connecting member 21 and the second connecting member 22 can connect two adjacent display units. With the above-described configuration, under the action of the first connecting member 21 and the second connecting member 22, the first base 11 and the second base 12 can be connected to two adjacent display units. At this time, the rotating disk 30 is driven to rotate. When the rotating disk 30 rotates, it causes the first connecting rod 41 and the second connecting rod 42 to swing, thereby causing the first base 11 and the second base 12 to move closer or further apart. This pulls or pushes the two adjacent display units closer or further apart, adjusting the distance between them. Furthermore, under the action of the first connecting member 21 and the second connecting member 22, the two adjacent display units are fixed together. This ensures that the distance between the gaps between adjacent display units can be adjusted while maintaining their connection. Therefore, when multiple display units are spliced, the gaps between any two adjacent display units are uniform, thus guaranteeing the display effect. Therefore, the technical solution of this embodiment effectively solves the problem in related technologies where different gap sizes between display units lead to poor display effects during splicing.

[0035] like Figures 1 to 6As shown, in this embodiment, the connecting device further includes a third seat 13, a fourth seat 14, a third connecting rod 43, a fourth connecting rod 44, a third connecting member 23, and a fourth connecting member 24. The third seat 13 and the fourth seat 14 are arranged adjacent to each other. The third seat 13 is arranged adjacent to the first seat 11, and the fourth seat 14 is arranged adjacent to the second seat 12. The rotating disk 30 is located at the center of the first seat 11, the second seat 12, the third seat 13, and the fourth seat 14. The first end of the third connecting rod 43 is drivenly connected to the rotating disk 30, and the second end of the third connecting rod 43 is drivenly connected to the third connecting member 24. The seat 13 is hinged, the first end of the fourth link 44 is driven to the rotating disk 30, the second end of the fourth link 44 is hinged to the fourth seat 14, the middle part of the fourth link 44 is hinged to the middle part of the third link 43, the rotating disk 30 rotates to drive the first link 41, the second link 42, the third link 43 and the fourth link 44 to swing so that the first seat 11 and the second seat 12 move closer or further away from each other, and the third seat 13 and the fourth seat 14 move closer or further away from each other. The third connecting piece 23 is provided on the third seat 13, and the fourth connecting piece 24 is provided on the fourth seat 14. The first base 11, the second base 12, the third base 13, and the fourth base 14 are arranged in an array. The two ends of the third connecting rod 43 are connected to the rotating disk 30 and the third base 13, respectively, and the two ends of the fourth connecting rod 44 are connected to the rotating disk 30 and the fourth base 14, respectively. This allows the rotating disk 30 to rotate simultaneously, thereby moving the first base 11, the second base 12, the third base 13, and the fourth base 14. This enables the first base 11 and the second base 12 to move away from or towards each other, and the third base 13 and the fourth base 14 to move away from or towards each other. Furthermore, the first base 11, the second base 12, the third base 13, and the fourth base 14 can be connected to the four arrayed display units, thereby allowing adjustment of the gaps between the four display units.

[0036] like Figure 6 and Figure 7As shown, in this embodiment, the rotating disk 30 is provided with a first arc-shaped groove 31, a second arc-shaped groove 32, a third arc-shaped groove 33, and a fourth arc-shaped groove 34 spaced circumferentially on it. The first end of the first connecting rod 41 is provided with a first pin 411 that slides within the first arc-shaped groove 31; the first end of the second connecting rod 42 is provided with a second pin 421 that slides within the second arc-shaped groove 32; the first end of the third connecting rod 43 is provided with a third pin 431 that slides within the third arc-shaped groove 33; and the first end of the fourth connecting rod 44 is provided with a fourth pin 441 that slides within the fourth arc-shaped groove 34. The distance between the first end of the first arc-shaped groove 31 and the center of the rotating disk 30 is greater than the distance between the second end of the first arc-shaped groove 31 and the center of the rotating disk 30. The second end of the second arc-shaped groove 32 and the center of the rotating disk 30 are... The first ends of the first arc-shaped groove 31 are adjacent to each other. The distance between the first end of the second arc-shaped groove 32 and the center of the rotating disk 30 is greater than the distance between the second end of the first arc-shaped groove 31 and the center of the rotating disk 30. The first end of the third arc-shaped groove 33 and the second end of the second arc-shaped groove 32 are adjacent to each other. The distance between the first end of the third arc-shaped groove 33 and the center of the rotating disk 30 is greater than the distance between the second end of the third arc-shaped groove 33 and the center of the rotating disk 30. The first end of the fourth arc-shaped groove 34 and the second end of the third arc-shaped groove 33 are adjacent to each other. The distance between the first end of the fourth arc-shaped groove 34 and the center of the rotating disk 30 is greater than the distance between the second end of the fourth arc-shaped groove 34 and the center of the rotating disk 30. The first end of the second arc-shaped groove 32 and the second end of the fourth arc-shaped groove 34 are adjacent to each other. The rotating disk 30 is provided with a first arc-shaped groove 31, a second arc-shaped groove 32, a third arc-shaped groove 33, and a fourth arc-shaped groove 34. When the rotating disk 30 rotates, the first pin 411, the second pin 421, the third pin 431, and the fourth pin 441 can respectively rotate through the first arc-shaped groove 31, the second arc-shaped groove 32, the third arc-shaped groove 33, and the fourth arc-shaped groove 34. Furthermore, the first arc-shaped groove 31, the second arc-shaped groove 32, the third arc-shaped groove 33, and the fourth arc-shaped groove 34 have the same shape change trend, that is, the distance between the two ends of each arc-shaped groove and the center of the rotating disk 30 is different. This allows the rotating disk 30 to drive the first connecting rod 41, the second connecting rod 42, the third connecting rod 43, and the fourth connecting rod 44 to swing when rotating.

[0037] like Figures 1 to 6As shown, in this embodiment, the connecting device further includes a fifth link 45 and a sixth link 46. The first end of the fifth link 45 is hinged to the second pin 421, and the second end of the fifth link 45 is hinged to the third seat 13. The first end of the sixth link 46 is hinged to the fourth pin 441, and the second end of the sixth link 46 is hinged to the first seat 11. The middle part of the sixth link 46 is hinged to the middle part of the fifth link 45. The hinge points of the first link 41 and the sixth link 46 with the first seat 11 are offset, and the hinge points of the third link 43 and the fifth link 45 with the third seat 13 are also offset. The arrangement of the fifth link 45 and the sixth link 46 allows for adjustment of the distance between the first seat 11 and the third seat 13, thereby making the adjustment function of the connecting device more comprehensive.

[0038] like Figures 1 to 6 As shown, in this embodiment, the connecting device further includes a seventh link 47 and an eighth link 48. The first end of the seventh link 47 is hinged to the first pin 411, and the second end of the seventh link 47 is hinged to the fourth seat 14. The first end of the eighth link 48 is hinged to the third pin 431, and the second end of the eighth link 48 is hinged to the second seat 12. The middle portion of the eighth link 48 is hinged to the middle portion of the seventh link 47. The hinge points of the eighth link 48 and the second link 42 with the second seat 12 are offset, and the hinge points of the seventh link 47 and the fourth link 44 with the fourth seat 14 are also offset. This arrangement also enables adjustment of the distance between the second seat 12 and the fourth seat 14.

[0039] like Figures 1 to 6 As shown, in this embodiment, under the action of the first link 41, the second link 42, the third link 43, the fourth link 44, the fifth link 45, the sixth link 46, the seventh link 47, and the eighth link 48, the distance between any two adjacent seats 11, 12, 13, and 14 can be adjusted. Specifically, the distance between the first seat 11 and the second seat 12 can be adjusted, the distance between the first seat 11 and the third seat 13 can be adjusted, the distance between the second seat 12 and the fourth seat 14 can be adjusted, and the distance between the third seat 13 and the fourth seat 14 can also be adjusted. In the specific embodiment shown in the figure, by rotating the rotating disk 30, the distances between the first seat 11 and the second seat 12, between the first seat 11 and the third seat 13, between the second seat 12 and the fourth seat 14, and between the third seat 13 and the fourth seat 14 can be adjusted simultaneously.

[0040] like Figures 1 to 9As shown, in this embodiment, the connecting device further includes a driving member 50, which is drivenly connected to the rotating disk 30 to drive the rotating disk 30 to rotate. The driving member 50 enables the rotating disk 30 to rotate, thereby making it easier to rotate the rotating disk 30.

[0041] like Figure 9 As shown, in this embodiment, the driving component 50 includes a knob 51, which includes a rotating head 511 and a rotating rod 512 connected to the rotating head 511. An anti-rotation structure 60 is provided between the rotating rod 512 and the rotating disk 30. The knob 51 has a simple structure and is easy to set. Under the action of the anti-rotation structure 60, the knob 51 can drive the rotating disk 30 to rotate.

[0042] like Figure 3 As shown, in this embodiment, the rotating head 511 is marked with a maximum value and a minimum value. When the rotating head 511 rotates to the maximum value, the distance between the first seat 11 and the second seat 12, the third seat 13 and the fourth seat 14, the first seat 11 and the third seat 13, and the second seat 12 and the fourth seat 14 are at their maximum. Similarly, when the rotating head 511 rotates to the maximum value, the distance between the first seat 11 and the second seat 12, the third seat 13 and the fourth seat 14, and the first seat 11 and the third seat 13, and the second seat 12 and the fourth seat 14 are at their minimum. At this time, the distance can be 0 or other dimensions.

[0043] In an embodiment not shown in the figure, the driving component includes a motor, the output shaft of which is connected to the rotation shaft of the rotating disk, meaning that the motor can drive the rotating disk to rotate.

[0044] like Figure 9 As shown, in this embodiment, the anti-rotation structure 60 includes a limiting hole 61 and a limiting block 62 adapted to the shape of the limiting hole 61. The limiting block 62 is inserted into the limiting hole 61. One of the limiting hole 61 and the limiting block 62 is located on the side of the rotating rod 512 away from the rotating head 511, and the other is located at the center of the rotating disk 30. The limiting hole 61 and the limiting block 62 have simple structures and are easy to install. Furthermore, the insertion of the limiting block 62 into the limiting hole 61 can achieve an anti-rotation fit. Specifically, in this embodiment, the limiting hole 61 is rectangular in shape, and the cross-section of the limiting block 62 is also rectangular. The limiting hole 61 is located at the center of the rotating disk 30, and the limiting block 62 is located at the bottom of the rotating rod 512.

[0045] like Figures 1 to 9As shown, in this embodiment, a first recess 111 is provided at the edge of the first seat 11 facing the second seat 12 and the third seat 13; a second recess 121 is provided at the edge of the second seat 12 facing the first seat 11 and the fourth seat 14; a third recess 131 is provided at the edge of the third seat 13 facing the first seat 11 and the fourth seat 14; and a fourth recess 141 is provided at the edge of the fourth seat 14 facing the second seat 12 and the third seat 13. The second recess 121, the third recess 131, and the fourth recess 141 form a cross-shaped cavity. The first connecting rod 41 and the second connecting rod 42 are disposed in the first recess 111 and the second recess 121. The third connecting rod 43 and the fourth connecting rod 44 are disposed in the third recess 131 and the fourth recess 141. The fifth connecting rod 45 and the sixth connecting rod 46 are disposed in the first recess 111 and the fourth recess 141. The seventh connecting rod 47 and the eighth connecting rod 48 are disposed between the second recess 121 and the fourth recess 141. Specifically, the first link 41, the second link 42, the third link 43, the fourth link 44, the fifth link 45, the sixth link 46, the seventh link 47, and the eighth link 48 are all set in the cross-shaped cavity, which allows the first link 41, the second link 42, the third link 43, the fourth link 44, the fifth link 45, the sixth link 46, the seventh link 47, and the eighth link 48 to be hidden, and makes the overall structure more regular.

[0046] like Figures 1 to 9As shown, in this embodiment, the first connecting member 21 includes a first connecting cylinder 211 and a first push rod 212. The first push rod 212 can drive the first connecting cylinder 211 to rotate. A first locking block 2111 is provided on the inner wall of the first connecting cylinder 211. The first connecting cylinder 211 passes through the first base 11, and the first push rod 212 is located below the first base 11. The second connecting member 22 includes a second connecting cylinder 221 and a second push rod 222. The second push rod 222 can drive the second connecting cylinder 221 to rotate. A second locking block 2211 is provided on the inner wall of the second connecting cylinder 221. The second connecting cylinder 221 passes through the second base 12, and the second push rod 222 is located below the second base 11. Below 2; the third connector 23 includes a third connecting cylinder 231 and a third push rod 232. The third push rod 232 can drive the third connecting cylinder 231 to rotate. A third locking block 2311 is provided on the inner wall of the third connecting cylinder 231. The third connecting cylinder 231 passes through the third seat 13, and the third push rod 232 is located below the third seat 13; the fourth connector 24 includes a fourth connecting cylinder 241 and a fourth push rod 242. The fourth push rod 242 can drive the fourth connecting cylinder 241 to rotate. A fourth locking block 2411 is provided on the inner wall of the fourth connecting cylinder 241. The fourth connecting cylinder 241 passes through the fourth seat 14, and the fourth push rod 242 is located below the fourth seat 14. The above arrangement can effectively connect with the display unit. Specifically, each display unit has a connecting post at each corner, and each connecting post has a stop. Four adjacent connecting posts from four adjacent display units are inserted into the first connecting cylinder 211, the second connecting cylinder 221, the third connecting cylinder 231, and the fourth connecting cylinder 241, respectively. By pushing the first push rod 212, the second push rod 222, the third push rod 232, and the fourth push rod 242, the stop engages with the first locking block 2111, the second locking block 2211, the third locking block 2311, and the fourth locking block 2411, respectively, thus achieving connection. This ensures a reliable connection.

[0047] like Figures 1 to 9As shown, in this embodiment, the connecting device further includes a first cover 71, a second cover 72, a third cover 73, and a fourth cover 74. The first cover 71 is positioned below the first base 11 and between the first push rod 212 and the first base 11. The second cover 72 is positioned below the second base 12 and between the second base 12 and the second push rod 222. The third cover 73 is positioned below the third base 13 and between the third base 13 and the third push rod 232. The fourth cover 74 is positioned below the fourth base 14 and between the fourth base 14 and the fourth push rod 242. The first cover 71, the second cover 72, the third cover 73, and the fourth cover 74 can cover the first connecting rod 41, the second connecting rod 42, the third connecting rod 43, the fourth connecting rod 44, the fifth connecting rod 45, the sixth connecting rod 46, the seventh connecting rod 47, and the eighth connecting rod 48, thus making the overall structure more regular.

[0048] like Figures 1 to 9 As shown, in this embodiment, a first positioning block 711 is provided on the first cover 71, a second positioning block 721 is provided on the second cover 72, a third positioning block 731 is provided on the third cover 73, and a fourth positioning block 741 is provided on the fourth cover 74. The first positioning block 711, the second positioning block 721, the third positioning block 731, and the fourth positioning block 741 enclose a positioning space, within which the rotating rod 512 is located. The arrangement of the first positioning block 711, the second positioning block 721, the third positioning block 731, and the fourth positioning block 741 can guide and position the rotating rod 512, thus preventing the rotating rod 512 from deflecting and making the rotation of the knob 51 more stable.

[0049] According to another aspect of this application, an LED display device is provided, such as... Figure 10 As shown, the LED display device of this embodiment includes multiple LED display units and multiple connecting devices, each connecting device corresponding to multiple LED display units, and the connecting device is the aforementioned connecting device. The aforementioned connecting device can effectively connect adjacent LED display units together and can adjust the distance between adjacent LED display units, thereby improving the display effect of the LED display device. Therefore, the LED display device with the aforementioned connecting device also has the above-mentioned advantages.

[0050] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0051] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," and "above" are used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figures. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for ease of differentiation of the corresponding components; unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0052] 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 connecting device, characterized in that, include: The first seat (11) and the second seat (12) are arranged adjacent to each other and can move away from or close to each other; A first connector (21) and a second connector (22), wherein the first connector (21) is disposed on the first seat (11) and the second connector (22) is disposed on the second seat (12); A rotating disk (30) is rotatably disposed at adjacent corners of the first seat (11) and the second seat (12); The first link (41) has a first end that is driven to the rotating disk (30) and a second end that is hinged to the first seat (11). The second link (42) has its first end connected to the rotating disk (30) and its second end connected to the second seat (12). The middle part of the second link (42) is connected to the middle part of the first link (41). The rotating disk (30) rotates to drive the first connecting rod (41) and the second connecting rod (42) to swing relative to each other, causing the first seat (11) and the second seat (12) to move closer to each other or further away from each other; The connecting device further includes a third seat (13), a fourth seat (14), a third connecting rod (43), a fourth connecting rod (44), a third connector (23), and a fourth connector (24). The third seat (13) and the fourth seat (14) are arranged adjacent to each other. The third seat (13) is arranged adjacent to the first seat (11), and the fourth seat (14) is arranged adjacent to the second seat (12). The rotating disk (30) is located at the center of the first seat (11), the second seat (12), the third seat (13), and the fourth seat (14). The first end of the third connecting rod (43) is driven to connect with the rotating disk (30), and the second end of the third connecting rod (43) is hinged to the third seat (13). The first end of the fourth link (44) is driven to be connected to the rotating disk (30), the second end of the fourth link (44) is hinged to the fourth seat (14), the middle part of the fourth link (44) is hinged to the middle part of the third link (43), the rotating disk (30) rotates to drive the first link (41), the second link (42), the third link (43) and the fourth link (44) to swing so that the first seat (11) and the second seat (12) move closer or further away from each other and the third seat (13) and the fourth seat (14) move closer or further away from each other, the third connector (23) is disposed on the third seat (13), and the fourth connector (24) is disposed on the fourth seat (14); The rotating disk (30) is provided with a first arc-shaped groove (31), a second arc-shaped groove (32), a third arc-shaped groove (33), and a fourth arc-shaped groove (34) spaced circumferentially. The first end of the first connecting rod (41) is provided with a first pin (411) that slides in the first arc-shaped groove (31). The first end of the second connecting rod (42) is provided with a second pin (421) that slides in the second arc-shaped groove (32). The first end of the third connecting rod (43) is provided with a third pin (431) that slides in the third arc-shaped groove (33). The first end of the fourth connecting rod (44) is provided with a fourth pin (441) that slides in the fourth arc-shaped groove (34). The distance between the first end of the first arc-shaped groove (31) and the center of the rotating disk (30) is greater than the distance between the second end of the first arc-shaped groove (31) and the center of the rotating disk (30). The distance between the second end of the second arc-shaped groove (32) and the first arc-shaped groove (34) is greater than the distance between the second end of the second arc-shaped groove (32) and the center of the first arc-shaped groove (30). The first ends of (31) are arranged adjacent to each other, the distance between the first end of the second arc groove (32) and the center of the rotating disk (30) is greater than the distance between the second end of the second arc groove (32) and the center of the rotating disk (30), the first end of the third arc groove (33) and the second end of the first arc groove (31) are arranged adjacent to each other, the distance between the first end of the third arc groove (33) and the center of the rotating disk (30) is greater than the distance between the second end of the third arc groove (33) and the center of the rotating disk (30), the first end of the fourth arc groove (34) and the second end of the third arc groove (33) are arranged adjacent to each other, the distance between the first end of the fourth arc groove (34) and the center of the rotating disk (30) is greater than the distance between the second end of the fourth arc groove (34) and the center of the rotating disk (30), and the first end of the second arc groove (32) and the second end of the fourth arc groove (34) are arranged adjacent to each other.

2. The connecting device according to claim 1, characterized in that, The connecting device further includes a fifth link (45) and a sixth link (46). The first end of the fifth link (45) is hinged to the second pin (421), and the second end of the fifth link (45) is hinged to the third seat (13). The first end of the sixth link (46) is hinged to the fourth pin (441), and the second end of the sixth link (46) is hinged to the first seat (11). The middle part of the sixth link (46) and the middle part of the fifth link (45) are hinged together. The hinge points of the first link (41) and the sixth link (46) with the first seat (11) are misaligned. The hinge points of the third link (43) and the fifth link (45) with the third seat (13) are also misaligned.

3. The connecting device according to claim 2, characterized in that, The connecting device further includes a seventh link (47) and an eighth link (48). The first end of the seventh link (47) is hinged to the first pin (411), and the second end of the seventh link (47) is hinged to the fourth seat (14). The first end of the eighth link (48) is hinged to the third pin (431), and the second end of the eighth link (48) is hinged to the second seat (12). The middle part of the eighth link (48) and the middle part of the seventh link (47) are hinged together. The hinge points of the eighth link (48) and the second link (42) with the second seat (12) are misaligned. The hinge points of the seventh link (47) and the fourth link (44) with the fourth seat (14) are also misaligned.

4. The connecting device according to claim 1, characterized in that, The connecting device further includes a driving component (50), which is drivingly connected to the rotating disk (30) to drive the rotating disk (30) to rotate.

5. The connecting device according to claim 4, characterized in that, The drive unit (50) includes a knob (51), which includes a rotating head (511) and a rotating rod (512) connected to the rotating head (511). An anti-rotation structure (60) is provided between the rotating rod (512) and the rotating disk (30).

6. The connecting device according to claim 5, characterized in that, The anti-rotation structure (60) includes a limiting hole (61) and a limiting block (62) adapted to the shape of the limiting hole (61). The limiting block (62) is inserted into the limiting hole (61). One of the limiting hole (61) and the limiting block (62) is located on the side of the rotating rod (512) away from the rotating head (511), and the other of the limiting hole (61) and the limiting block (62) is located at the center of the rotating disk (30).

7. The connecting device according to claim 3, characterized in that, The first seat (11) has a first recess (111) at its edge facing the second seat (12) and the third seat (13). The second seat (12) has a second recess (121) at its edge facing the first seat (11) and the fourth seat (14). The third seat (13) has a third recess (131) at its edge facing the first seat (11) and the fourth seat (14). The fourth seat (14) has a fourth recess (141) at its edge facing the second seat (12) and the third seat (13). The first recess (111), the second recess (121), and the third seat (13) are provided with a first recess (111), a second recess (121), and a third recess (131). The third recess (131) and the fourth recess (141) form a cross-shaped cavity. The first connecting rod (41) and the second connecting rod (42) are disposed in the first recess (111) and the second recess (121). The third connecting rod (43) and the fourth connecting rod (44) are disposed in the third recess (131) and the fourth recess (141). The fifth connecting rod (45) and the sixth connecting rod (46) are disposed in the first recess (111) and the fourth recess (141). The seventh connecting rod (47) and the eighth connecting rod (48) are disposed between the second recess (121) and the fourth recess (141).

8. The connecting device according to claim 5, characterized in that, The first connector (21) includes a first connecting cylinder (211) and a first push rod (212). The first push rod (212) can drive the first connecting cylinder (211) to rotate. A first locking block (2111) is provided on the inner wall of the first connecting cylinder (211). The first connecting cylinder (211) passes through the first seat (11). The first push rod (212) is located below the first seat (11). The second connector (22) includes a second connecting cylinder (221) and a second push rod (222). The second push rod (222) can drive the second connecting cylinder (221) to rotate. A second locking block (2211) is provided on the inner wall of the second connecting cylinder (221). The second connecting cylinder (221) passes through the second seat (12). The second push rod (222) is located below the second seat (12). The third connector (23) includes a third connecting cylinder (231) and a third push rod (232). The third push rod (232) can drive the third connecting cylinder (231) to rotate. A third locking block (2311) is provided on the inner wall of the third connecting cylinder (231). The third connecting cylinder (231) passes through the third seat (13). The third push rod (232) is located below the third seat (13). The fourth connector (24) includes a fourth connecting cylinder (241) and a fourth push rod (242). The fourth push rod (242) can drive the fourth connecting cylinder (241) to rotate. A fourth locking block (2411) is provided on the inner wall of the fourth connecting cylinder (241). The fourth connecting cylinder (241) passes through the fourth seat (14). The fourth push rod (242) is located below the fourth seat (14).

9. The connecting device according to claim 8, characterized in that, The connecting device further includes a first cover (71), a second cover (72), a third cover (73), and a fourth cover (74). The first cover (71) is disposed below the first seat (11) and located between the first push rod (212) and the first seat (11). The second cover (72) is disposed below the second seat (12) and located between the second seat (12) and the second push rod (222). The third cover (73) is disposed below the third seat (13) and located between the third seat (13) and the third push rod (232). The fourth cover (74) is disposed below the fourth seat (14) and located between the fourth seat (14) and the fourth push rod (242).

10. The connecting device according to claim 9, characterized in that, The first cover (71) is provided with a first positioning block (711), the second cover (72) is provided with a second positioning block (721), the third cover (73) is provided with a third positioning block (731), and the fourth cover (74) is provided with a fourth positioning block (741). The first positioning block (711), the second positioning block (721), the third positioning block (731), and the fourth positioning block (741) form a positioning space, and the rotating rod (512) is located within the positioning space.

11. An LED display device, comprising a plurality of LED display units and a plurality of connecting devices, each of the connecting devices corresponding to the plurality of LED display units, characterized in that, The connecting device is the connecting device according to any one of claims 1 to 10.

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