A splicing expansion device for LED display arrays

Abstract

This application relates to a splicing expansion device for LED display arrays, belonging to the field of splicing expansion devices. It includes a base plate, on which diagonal braces and a fixing plate are fixedly mounted. A first support plate and a second support plate are fixedly connected to both sides of the fixing plate, respectively. A horizontal plate is fixedly mounted on the top of the first and second support plates. A driving assembly is mounted on the horizontal plate, and a first screw and a second screw are provided on the driving assembly. A first telescopic assembly is provided on the outer side of the first screw, and a second telescopic assembly is provided on the outer side of the second screw. A connecting frame is mounted on the first telescopic assembly. This application solves the problems of existing splicing expansion devices being unsuitable for supporting and fixing LED display arrays of different sizes and horizontal and vertical spacings, and the inability to switch between synchronous adjustment, independent adjustment of the horizontal expansion spacing, and independent adjustment of the vertical expansion spacing.

Description

Technical Field

[0001] This invention relates to a splicing expansion device for LED display arrays, belonging to the field of splicing expansion devices. Background Technology

[0002] LED display array splicing expansion devices are mainly used to increase the display area and resolution of LED displays, enabling them to meet the needs of large-size or multi-screen displays. They are widely used in public places, conference rooms, performance venues, and other fields. With the continuous development of display technology, traditional single LED screens can no longer meet the needs of large-scale, high-resolution displays. Therefore, splicing devices are needed to expand LED display arrays. However, existing splicing expansion devices still have some shortcomings.

[0003] The invention patent with publication number CN111785182B discloses an LED splicing panel. In this panel, a first region adjacent to the splicing seam is formed on a sub-substrate. The first region includes a first row and a second row, which are alternately arranged along the column direction. At least one row of LED devices is arranged in the first row, and at least one row of LED devices is arranged in the second row. In the column direction, the LED devices in the first row and the second row are staggered. In the row direction, the spacing between adjacent LED devices decreases from the end closest to the splicing seam to the end furthest from the splicing seam, thereby mitigating the visual impact of a large splicing seam and improving the display effect of the LED splicing panel. While the above device can achieve splicing functionality, it is not suitable for supporting and fixing LED display arrays of different sizes and horizontal and vertical arrangement spacings. It cannot simultaneously adjust the horizontal arrangement spacing while simultaneously adjusting the vertical arrangement spacing, and it cannot switch between simultaneous adjustment, separate adjustment of the horizontal extension spacing, and separate adjustment of the vertical extension spacing.

[0004] Therefore, we have made improvements to this by proposing a splicing expansion device for LED display arrays. Summary of the Invention

[0005] (i) The technical problem to be solved by the present invention is that the existing splicing expansion device is not suitable for supporting and fixing LED display arrays of different sizes and horizontal and vertical arrangement spacings, and it cannot switch between the adjustment methods of synchronous adjustment, individual adjustment of horizontal expansion spacing and individual adjustment of vertical expansion spacing.

[0006] (II) Technical Solution

[0007] To achieve the above-mentioned objectives, this invention provides a splicing and expansion device for an LED display array, comprising a base plate, on which diagonal braces and a fixing plate are fixedly mounted. A first support plate and a second support plate are fixedly connected to both sides of the fixing plate, respectively. A horizontal plate is fixedly mounted on the top of the first and second support plates. A driving assembly is mounted on the horizontal plate. A first screw and a second screw are mounted on the driving assembly. A first telescopic assembly is mounted on the outer side of the first screw, and a second telescopic assembly is mounted on the outer side of the second screw. A connecting frame is mounted on the first telescopic assembly. A communicating groove is formed on the connecting frame. An adjusting block is slidably mounted inside the connecting frame. A fixing rod is passed through the adjusting block and connected to the second telescopic assembly.

[0008] The base plate, diagonal brace, fixed plate, first support plate, second support plate and horizontal plate are fixedly connected as an integral structure, and the base plate and diagonal brace are symmetrically distributed on both sides of the fixed plate.

[0009] The drive assembly includes a motor fixedly connected to the horizontal plate. A first connecting shaft is fixedly mounted on the output shaft of the motor. A first bevel gear is fixedly connected to the first connecting shaft. A second bevel gear is meshed with the side of the first bevel gear. A third bevel gear is meshed with the bottom of the second bevel gear. A first connecting rod is fixedly mounted below the first connecting shaft. A keyed cylinder is keyed to the outer side of the first connecting rod. The third bevel gear and the keyed cylinder are fixedly connected. A second connecting rod is keyed to the second bevel gear. The second connecting rod and a second screw are fixedly connected. A third connecting rod is fixedly mounted at the bottom of the keyed cylinder. The third connecting rod and the first screw are keyed together.

[0010] The first connecting rod is fixedly provided with a first key block, the key cylinder and the first key block are slidably connected, the outer side of the key cylinder is rotatably connected with a first connecting ring, the first connecting ring is fixedly provided with a first connecting plate, and a first electric push rod is fixedly connected between the first connecting plate and the first support plate.

[0011] The second connecting rod is fixedly connected to a second key block, the second bevel gear and the second key block are slidably connected, a second connecting ring is rotatably mounted on the second bevel gear, and a second electric push rod is fixedly arranged between the second connecting ring and the cross plate.

[0012] The first screw and the second screw are perpendicular to each other, the first screw is rotatably connected to the first support plate, and the second screw is rotatably connected to the cross plate.

[0013] The first telescopic component includes a first rotating rod rotatably mounted on a first support plate, a second rotating rod rotatably mounted on the first rotating rod, a third rotating rod rotatably mounted on the lowest second rotating rod, a first connecting block rotatably mounted in the middle of the first rotating rod, and a second connecting block rotatably mounted in the middle of the third rotating rod. Both the first connecting block and the second connecting block are slidably mounted inside the first support plate, and adjacent second rotating rods are rotatably connected.

[0014] The first connecting block and the second connecting block are fixedly connected to the connecting frame at the corresponding position. The inner wall of the connecting frame and the outer wall of the adjusting block are in contact with each other. An adhesive block is fixedly connected to the adjusting block. The second screw and the second connecting block are threadedly connected. The second screw passes through the interior of the fixed rod.

[0015] The second telescopic component includes a first rotating plate rotatably mounted on a horizontal plate, a second rotating plate rotatably mounted on the first rotating plate, a third rotating plate rotatably mounted on the second rotating plate closest to the second support plate, a first slider rotatably mounted in the middle of the second rotating plate, and a second slider rotatably mounted in the middle of the third rotating plate. Both the bottom of the first slider and the second slider are fixedly provided with protrusions, the protrusions are fixedly connected to the fixing rod, and the second screw is threadedly connected to the second slider.

[0016] The fixed rod and the connecting frame are perpendicular to each other, the thickness of the adjusting block is the same as the thickness of the connecting frame, and the adjusting block forms a sliding structure with the fixed rod and the connecting frame.

[0017] (III) Beneficial Effects

[0018] The LED display array splicing and expansion device provided by this invention has the following advantages:

[0019] 1. The device is equipped with a first telescopic component, a second telescopic component, a first screw, and a second screw. When the first screw and the second screw rotate synchronously, they drive the second connecting block and the second slider to slide, thereby changing the left-right position of the center of the third rotating plate on the horizontal plate and changing the up-down position of the center of the third rotating rod on the first support plate. The angles of the first and second rotating plates, as well as the first and second rotating rods, are adjusted synchronously. This allows the first connecting blocks and the first sliders on the device to increase the distance between adjacent first connecting blocks and adjacent second sliders while maintaining equidistant distances. This also allows the left-right and up-down distances of each adjusting block to increase or decrease synchronously, adapting to LED display arrays with different installation spacings. This enhances the applicability of the device and solves the problem that existing splicing expansion devices are not suitable for supporting and fixing LED display arrays of different sizes and horizontal and vertical spacings.

[0020] The device is equipped with a drive assembly. When it is necessary to synchronously adjust the left-right or up-down spacing between adjacent adjustment blocks, it can be operated according to... Figure 2 and Figure 3 The method involves keeping the second bevel gear engaged with the first and third bevel gears, allowing the first bevel gear to drive the second and third bevel gears to rotate. This, in turn, drives the first and second screws to rotate simultaneously, achieving synchronous adjustment. When only the second screw needs adjustment, the first electric push rod is shortened, disengaging the key cylinder from the first connecting rod. This allows the first bevel gear to drive only the second bevel gear, which in turn drives the second screw via the second connecting rod. In this case, the device only adjusts the horizontal spacing of adjacent LED display arrays, while the vertical spacing remains unchanged. Alternatively, the first electric push rod can be shortened without shortening the first electric push rod. The push rod shortens the second electric push rod, causing the second bevel gear to slide on the second connecting rod. At this time, the first bevel gear is not meshed with the second bevel gear. The first connecting shaft drives the first connecting rod, key cylinder, and third connecting rod to rotate. The third connecting rod drives the first screw to rotate, while the second screw remains stationary. This achieves the function of adjusting the vertical spacing of adjacent LED display arrays, enabling the device to switch between multiple adjustment modes. This solves the problem that existing adjacent LED display array splicing expansion devices cannot switch between synchronous adjustment, independent adjustment of horizontal expansion spacing, and independent adjustment of vertical expansion spacing.

[0021] 3. The device is equipped with a connecting frame, a fixing rod, and a connecting groove. The connecting groove allows the fixing rod to pass through and slide left and right, so as to reduce the overall space occupied by the device when adjusting the left and right spacing of adjacent LED display arrays simultaneously. By reducing the space occupied in the adjustment area, the connecting frame and the fixing rod form a grid structure, so that there is enough space for heat dissipation when using the spliced ​​LED display array, which enhances the practicality of the device. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A;

[0025] Figure 3This is a schematic diagram of the connection structure between the first connecting shaft and the first bevel gear of the present invention;

[0026] Figure 4 This is a schematic diagram of the connection structure between the second support plate and the connecting frame of the present invention;

[0027] Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point B;

[0028] Figure 6 This is a schematic diagram of the connection structure between the second support plate and the horizontal plate of the present invention;

[0029] Figure 7 for Figure 6 Enlarged schematic diagram of the structure at point C;

[0030] Figure 8 for Figure 6 Enlarged schematic diagram of the structure at point D;

[0031] Figure 9 This is a schematic diagram of the connection structure between the horizontal plate and the second screw of the present invention;

[0032] Figure 10 for Figure 9 Enlarged schematic diagram of the structure at point E;

[0033] Figure 11 for Figure 9 Enlarged schematic diagram of the structure at point F.

[0034] Reference numerals: 1. Base plate; 2. Diagonal brace; 3. Fixing plate; 4. First support plate; 5. Second support plate; 6. Horizontal plate; 7. Drive assembly; 701. Motor; 702. First connecting shaft; 703. First bevel gear; 704. Second bevel gear; 705. Third bevel gear; 706. First connecting rod; 707. First key block; 708. Key cylinder; 709. Second connecting rod; 710. Second key block; 711. Third connecting rod; 712. First connecting ring; 713. First connecting plate; 714. First electric push rod; 715. Second connecting ring 716. Second electric push rod; 8. First screw; 9. Second screw; 10. First telescopic assembly; 1001. First rotating rod; 1002. Second rotating rod; 1003. First connecting block; 1004. Third rotating rod; 1005. Second connecting block; 11. Second telescopic assembly; 1101. First rotating plate; 1102. Second rotating plate; 1103. First slider; 1104. Third rotating plate; 1105. Second slider; 1106. Protrusion; 12. Connecting frame; 13. Fixing rod; 14. Adjusting block; 15. Adhesive block; 16. Connecting groove. Detailed Implementation

[0035] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0036] Example 1:

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, this embodiment proposes a splicing and expansion device for an LED display array, including a base plate 1. A diagonal brace 2 and a fixing plate 3 are fixedly mounted on the base plate 1. A first support plate 4 and a second support plate 5 are fixedly connected to both sides of the fixing plate 3, respectively. A horizontal plate 6 is fixedly mounted on the top of the first support plate 4 and the second support plate 5. A driving assembly 7 is mounted on the horizontal plate 6. A first screw 8 and a second screw 9 are provided on the driving assembly 7. The base plate 1, diagonal brace 2, fixing plate 3, first support plate 4, second support plate 5, and horizontal plate 6 support the entire device. The first support plate 4 is driven by the driving assembly 7. The rotation of screw 8 or second screw 9, or the synchronous rotation of first screw 8 and second screw 9, changes the vertical and horizontal spacing of the LED display array assembly and expansion. A first telescopic component 10 is provided on the outer side of first screw 8, and a second telescopic component 11 is provided on the outer side of second screw 9. A connecting frame 12 is installed on the first telescopic component 10, and a connecting groove 16 is provided on the connecting frame 12. An adjusting block 14 is slidably installed in the connecting frame 12, and a fixing rod 13 is provided through the adjusting block 14. The fixing rod 13 is connected to the second telescopic component 11. When the first screw 8 rotates, it will cause the first telescopic component 10 to contract or expand synchronously, thereby changing the vertical spacing between the two adjacent connecting frames 12 while maintaining the equidistant distance between them. When the second screw 9 rotates, the second telescopic component 11 will contract or expand synchronously, thereby allowing the two adjacent fixed rods 13 to adjust the horizontal spacing between them while maintaining the equidistant distance. This allows the horizontal and vertical spacing of the adjusting block 14 to be adjusted synchronously or individually to adapt to LED display arrays with different assembly spacings.

[0038] Example 2:

[0039] The solution in Example 1 will be further described below with reference to its specific working method.

[0040] like Figure 1As shown, in a preferred embodiment, based on the above method, the base plate 1, diagonal brace 2, fixed plate 3, first support plate 4, second support plate 5 and horizontal plate 6 are further fixedly connected into an integral structure. The base plate 1 and diagonal brace 2 are symmetrically distributed on both sides of the fixed plate 3. The base plate 1 and diagonal brace 2 are used to support the fixed plate 3, the first support plate 4 and the second support plate 5 to ensure the overall stability of the device.

[0041] like Figure 1 , Figure 2 and Figure 3 As shown, in a preferred embodiment, based on the above method, the drive assembly 7 further includes a motor 701 fixedly connected to the horizontal plate 6. A first connecting shaft 702 is fixedly disposed on the output shaft of the motor 701. A first bevel gear 703 is fixedly connected to the first connecting shaft 702. A second bevel gear 704 is meshed with the side of the first bevel gear 703. A third bevel gear 705 is meshed with the lower part of the second bevel gear 704. A first connecting rod 706 is fixedly disposed below the first connecting shaft 702. The outer side of 06 is keyed to a key cylinder 708. The third bevel gear 705 and the key cylinder 708 are fixedly connected. The second bevel gear 704 is keyed to a second connecting rod 709, which is fixedly connected to the second screw 9. The bottom of the key cylinder 708 is fixedly fitted with a third connecting rod 711, which is keyed to the first screw 8. The motor 701 drives the first connecting shaft 702 to rotate, thereby rotating the first bevel gear 703. When the second bevel gear 704 and the third bevel gear 705 are in... Figure 2 and Figure 3 In the current state, the first bevel gear 703 drives the second bevel gear 704 to rotate, the second bevel gear 704 drives the third bevel gear 705 to rotate, and the third bevel gear 705 drives the first screw 8 to rotate through the key cylinder 708 and the third connecting rod 711. When the second bevel gear 704 rotates, it drives the second screw 9 to rotate through the second connecting rod 709, so that the first screw 8 and the second screw 9 rotate simultaneously, so that the horizontal and vertical spacing of adjacent LED display arrays can be adjusted simultaneously in the future.

[0042] like Figure 2 and Figure 3As shown, in a preferred embodiment, based on the above method, a first key block 707 is fixedly provided on the first connecting rod 706, and the key cylinder 708 is slidably connected to the first key block 707. A first connecting ring 712 is rotatably connected to the outside of the key cylinder 708, and a first connecting plate 713 is fixedly provided on the first connecting ring 712. A first electric push rod 714 is fixedly connected between the first connecting plate 713 and the first support plate 4. When the first electric push rod 714 is shortened, it will drive the first connecting plate 713 and the key cylinder 708 to move downward, thereby changing the connection method of each bevel gear on the device, which facilitates the subsequent individual adjustment of the left and right spacing of adjacent LED display arrays.

[0043] like Figure 2 and Figure 3 As shown, in a preferred embodiment, based on the above method, a second key block 710 is fixedly connected to the second connecting rod 709, and the second bevel gear 704 is slidably connected to the second key block 710. A second connecting ring 715 is rotatably mounted on the second bevel gear 704, and a second electric push rod 716 is fixedly arranged between the second connecting ring 715 and the horizontal plate 6. When the second electric push rod 716 is shortened, it will drive the second connecting ring 715 and the second bevel gear 704 to move, so that the second bevel gear 704 stops rotating, which facilitates the subsequent individual adjustment of the vertical spacing of adjacent LED display arrays.

[0044] like Figure 2 As shown, in a preferred embodiment, based on the above method, the first screw 8 and the second screw 9 are further perpendicular to each other, the first screw 8 is rotatably connected to the first support plate 4, and the second screw 9 is rotatably connected to the horizontal plate 6, so as to ensure that the positions of the first screw 8 and the second screw 9 remain unchanged when rotating. The mutually perpendicular first screw 8 and the second screw 9 are used to adjust the vertical spacing and horizontal spacing of adjacent LED display arrays, respectively.

[0045] like Figure 1 , Figure 4 and Figure 5As shown, in a preferred embodiment, based on the above method, the first telescopic component 10 further includes a first rotating rod 1001 rotatably mounted on the first support plate 4, a second rotating rod 1002 rotatably mounted on the first rotating rod 1001, a third rotating rod 1004 rotatably mounted on the lowermost second rotating rod 1002, a first connecting block 1003 rotatably mounted in the middle of the first rotating rod 1001, and a second connecting block 1005 rotatably mounted in the middle of the third rotating rod 1004. Both the first connecting block 1003 and the second connecting block 1005 are slidably mounted on the first support plate 4. Inside the support plate 4, the two adjacent second rotating rods 1002 are rotatably connected. When the second connecting block 1005 slides inside the first support plate 4, the angle change of the third rotating rod 1004 will cause the angles of the other second rotating rods 1002 and the first rotating rod 1001 to change. At this time, the first connecting block 1003 and the second connecting block 1005 on the first rotating rod 1001, the second rotating rod 1002 and the third rotating rod 1004 form a telescopic scissor under the limiting action of the first support plate 4, so that the vertical spacing of each LED display array can be kept to change synchronously.

[0046] like Figure 1 Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown, in a preferred embodiment, based on the above method, the first connecting block 1003 and the second connecting block 1005 are fixedly connected to the corresponding connecting frame 12. The inner wall of the connecting frame 12 and the outer wall of the adjusting block 14 are in contact with each other. An adhesive block 15 is fixedly connected to the adjusting block 14. The second screw 9 is threadedly connected to the second connecting block 1005. The second screw 9 passes through the interior of the fixing rod 13. When the second connecting block 1005 slides, it will drive each connecting frame 12 to synchronously increase or decrease the vertical spacing of adjacent connecting frames 12 while maintaining equal distance, so as to adjust the assembly spacing of adjacent two rows of LED display arrays in the future.

[0047] like Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 9 , Figure 10 and Figure 11As shown, in a preferred embodiment, based on the above method, the second telescopic component 11 further includes a first rotating plate 1101 rotatably mounted on the horizontal plate 6, a second rotating plate 1102 rotatably mounted on the first rotating plate 1101, a third rotating plate 1104 rotatably mounted on the second rotating plate 1102 closest to the second support plate 5, a first slider 1103 rotatably mounted in the middle of the second rotating plate 1102, and a second slider 1105 rotatably mounted in the middle of the third rotating plate 1104. Both the first slider 1103 and the second slider 1105 have a protrusion 1106 fixedly provided at their bottoms. The protrusion 1106 is fixed to the fixed... The rods 13 are fixedly connected, and the second screw 9 and the second slider 1105 are threadedly connected. When the second screw 9 rotates, it will drive the second slider 1105 to slide within the horizontal plate 6. When the second slider 1105 slides, it will drive the third rotating plate 1104 to rotate. At this time, under the limiting action of the first slider 1103, the first rotating plate 1101 and the second rotating plate 1102 rotate synchronously with the third rotating plate 1104. When the third rotating plate 1104 rotates synchronously, it will cause the distance between two adjacent protrusions 1106 to increase or decrease synchronously, so as to adjust the left and right distance of the two adjacent LED display arrays in the future.

[0048] like Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 9 , Figure 10 and Figure 11 As shown, in a preferred embodiment, based on the above method, the fixing rod 13 and the connecting frame 12 are further perpendicular to each other, the thickness of the adjusting block 14 is the same as the thickness of the connecting frame 12, and the adjusting block 14 forms a sliding structure between the fixing rod 13 and the connecting frame 12. When the position of the fixing rod 13 changes, the left and right spacing of the adjacent column adjusting blocks 14 will be adjusted. After the vertical spacing of the two adjacent connecting frames 12 is adjusted, the vertical spacing of each row adjusting block 14 will be adjusted, thereby realizing the synchronous adjustment function of the LED display array.

[0049] Example 3:

[0050] The solutions in Embodiments 1 and 2 will be further described below with reference to their specific working methods.

[0051] Specifically, when using the splicing expansion device of this LED display array: (e.g.) Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the diagonal brace 2, fixing plate 3, first support plate 4, second support plate 5, and horizontal plate 6 on the base plate 1 support the entire device. The drive assembly 7 drives the first screw 8 to rotate or the second screw 9 to rotate, or drives the first screw 8 and the second screw 9 to rotate synchronously. Figure 2 and Figure 3 As shown, motor 701 drives the first connecting shaft 702 to rotate, which in turn drives the first bevel gear 703 to rotate, while the second bevel gear 704 and the third bevel gear 705 are in a position... Figure 2 and Figure 3 In the meshing state, the first bevel gear 703 can drive the second bevel gear 704 to rotate, the second bevel gear 704 drives the third bevel gear 705 to rotate, and the third bevel gear 705 drives the first screw 8 to rotate through the key cylinder 708 and the third connecting rod 711. When the second bevel gear 704 rotates, it will drive the second screw 9 to rotate through the second connecting rod 709, so that the first screw 8 and the second screw 9 rotate simultaneously. (It should be noted that in actual use, the first screw 8 and the second screw 9 with the corresponding thread direction need to be selected according to the rotation direction of the second bevel gear 704 and the third bevel gear 705 to ensure that the left and right spacing and the top and bottom spacing of each LED display array increase or decrease at the same time.) When the first electric push rod 714 shortens, it will drive the first connecting plate 713 and the first connecting ring 712 to move downwards, the key cylinder 708 and the third bevel gear 705 to move downwards, and the third bevel gear 705 will no longer maintain a key connection with the first connecting rod 706 through the first key block 707. At this time, the first bevel gear 703 will only drive the second bevel gear 704 and the second screw 9 to rotate, while the third bevel gear 705 remains stationary. When the first electric push rod 714 does not shorten and the second electric push rod 716 shortens, the second electric push rod 716 will drive the second connecting ring 715 and the second bevel gear 704 to move, so that the second bevel gear 704 stops rotating (the second key block 710 keeps the second connecting rod 709 and the second bevel gear 704 in a keyed connection state, so that the second screw 9 can be driven to rotate when the second bevel gear 704 re-meshes with the first bevel gear 703). At this time, the second screw 9 remains stationary and the first screw 8 is driven to rotate. By changing the connection method of each bevel gear on the device, it is convenient to adjust the left and right spacing and the top and bottom spacing of adjacent LED display arrays individually in the future.

[0052] like Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, when the first screw 8 rotates, it drives the first telescopic component 10 to contract or expand synchronously, thereby changing the vertical spacing between the two adjacent connecting frames 12 while maintaining equidistant distances. When the second screw 9 rotates, the second telescopic component 11 contracts or expands synchronously, thereby adjusting the left-right spacing between the two adjacent fixed rods 13 while maintaining equidistant distances. This allows the left-right and vertical spacing of the adjusting block 14 to be adjusted synchronously or individually to adapt to LED display arrays with different assembly spacings. Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, when the first screw 8 rotates, it will drive the second connecting block 1005 at the bottom to move up and down. When the second connecting block 1005 slides in the first support plate 4, the angle change of the third rotating rod 1004 will cause the angles of the other second rotating rods 1002 and the first rotating rod 1001 to change. At this time, the first connecting block 1003 and the second connecting block 1005 on the first rotating rod 1001, the second rotating rod 1002 and the third rotating rod 1004 form a longitudinal telescopic scissor under the limiting action of the first support plate 4, thereby driving each connecting frame 12 to synchronously increase or decrease the vertical spacing of the adjacent connecting frames 12 and the adjusting blocks 14 and the adhesive blocks 15 inside them while maintaining equal distance, thereby adjusting the longitudinal splicing spacing of the adjacent two rows of LED display arrays. When the second screw 9 rotates, it drives the second slider 1105 to slide left and right within the horizontal plate 6. When the second slider 1105 slides, it drives the third rotating plate 1104 to rotate. The second rotating plates 1102 at each location rotate synchronously under the limiting action of the first slider 1103, so that the first rotating plate 1101, the second rotating plate 1102 and the third rotating plate 1104 form a horizontal telescopic scissor, so that the distance between two adjacent protrusions 1106 can increase or decrease synchronously, thereby causing the fixed rod 13 to drive each column of adjusting blocks 14 to slide left and right, thereby realizing the function of synchronous adjustment or individual adjustment of the vertical and horizontal spacing of the LED display array.

[0053] The above embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Although the invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the invention do not depart from the spirit and scope of the invention and should be covered within the scope of the claims of the invention.

Claims

1. A splicing and expansion device for an LED display array, comprising a base plate, characterized in that, The base plate is fixedly provided with diagonal braces and a fixed plate. The two sides of the fixed plate are respectively fixedly connected to a first support plate and a second support plate. The top of the first support plate and the second support plate is fixedly provided with a horizontal plate. A driving assembly is installed on the horizontal plate. The driving assembly is provided with a first screw and a second screw. A first telescopic assembly is provided on the outside of the first screw. A second telescopic assembly is provided on the outside of the second screw. A connecting frame is installed on the first telescopic assembly. A connecting slot is opened on the connecting frame. An adjusting block is slidably installed in the connecting frame. A fixed rod is passed through the adjusting block. The fixed rod is connected to the second telescopic assembly. The drive assembly includes a motor fixedly connected to the horizontal plate. A first connecting shaft is fixedly mounted on the output shaft of the motor. A first bevel gear is fixedly connected to the first connecting shaft. A second bevel gear is meshed with the side of the first bevel gear. A third bevel gear is meshed with the bottom of the second bevel gear. A first connecting rod is fixedly mounted below the first connecting shaft. A keyed cylinder is keyed to the outer side of the first connecting rod. The third bevel gear and the keyed cylinder are fixedly connected. A second connecting rod is keyed to the second bevel gear. The second connecting rod and a second screw are fixedly connected. A third connecting rod is fixedly mounted at the bottom of the keyed cylinder. The third connecting rod and the first screw are keyed together. A first key block is fixedly mounted on the first connecting rod, and the key cylinder and the first key block are slidably connected. A second key block is fixedly connected to the second connecting rod, and the second bevel gear and the second key block are slidably connected.

2. The LED display array splicing and expansion device according to claim 1, characterized in that, The base plate, diagonal brace, fixed plate, first support plate, second support plate and horizontal plate are fixedly connected as an integral structure, and the base plate and diagonal brace are symmetrically distributed on both sides of the fixed plate.

3. The LED display array splicing and expansion device according to claim 1, characterized in that, The key cylinder is rotatably connected to a first connecting ring, and a first connecting plate is fixedly mounted on the first connecting ring. A first electric push rod is fixedly connected between the first connecting plate and the first support plate.

4. The LED display array splicing and expansion device according to claim 3, characterized in that, A second connecting ring is rotatably mounted on the second bevel gear, and a second electric push rod is fixedly disposed between the second connecting ring and the cross plate.

5. The LED display array splicing and expansion device according to claim 1, characterized in that, The first screw and the second screw are perpendicular to each other. The first screw is rotatably connected to the first support plate, and the second screw is rotatably connected to the cross plate.

6. The LED display array splicing and expansion device according to claim 1, characterized in that, The first telescopic assembly includes a first rotating rod rotatably mounted on a first support plate, a second rotating rod rotatably mounted on the first rotating rod, a third rotating rod rotatably mounted on the lowest second rotating rod, a first connecting block rotatably mounted in the middle of the first rotating rod, and a second connecting block rotatably mounted in the middle of the third rotating rod. Both the first connecting block and the second connecting block are slidably mounted inside the first support plate, and adjacent second rotating rods are rotatably connected.

7. The LED display array splicing and expansion device according to claim 6, characterized in that, The first connecting block and the second connecting block are fixedly connected to the connecting frame at the corresponding position. The inner wall of the connecting frame and the outer wall of the adjusting block are in contact with each other. An adhesive block is fixedly connected to the adjusting block. The second screw is threadedly connected to the second connecting block. The second screw passes through the inside of the fixed rod.

8. The LED display array splicing and expansion device according to claim 6, characterized in that, The second telescopic assembly includes a first rotating plate rotatably mounted on a horizontal plate, a second rotating plate rotatably mounted on the first rotating plate, a third rotating plate rotatably mounted on the second rotating plate closest to the second support plate, a first slider rotatably mounted in the middle of the second rotating plate, and a second slider rotatably mounted in the middle of the third rotating plate. Both the bottom of the first slider and the second slider are fixedly provided with protrusions, the protrusions are fixedly connected to the fixing rod, and the second screw is threadedly connected to the second slider.

9. The LED display array splicing and expansion device according to claim 8, characterized in that, The fixed rod and the connecting frame are perpendicular to each other, the thickness of the adjusting block is the same as the thickness of the connecting frame, and the adjusting block forms a sliding structure with the fixed rod and the connecting frame.

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