Fine flatness calibration mechanism for spliced display screen

Abstract

The utility model discloses a kind of fine adjustment flatness calibration mechanisms of spliced display screen, belong to spliced display screen technical field, including mutually connected frame body and the display screen of being located at its front side, its innovation is in, every frame body inside four corners are provided with the positioning shaft pointing to center, positioning shaft is internally provided with the inner groove and outer groove of integral through, and is equipped with accurate calibration adjusting mechanism.The calibration mechanism core is constituted by auxiliary spring, sliding block, sliding axle and screw rod driving part, by rotating the rotating handle of rear portion, drive screw rod and then accurately control the front and back displacement of front end connecting plate, finally through buffer pad push display screen back, realize its spatial position millimeter level fine adjustment.The four-point independent adjustment mechanism of the application, ensure the height of entire display screen splicing surface flat, while spring assembly provides stable pre-tightening force and absorbs stress, with the advantages of high adjustment precision, convenient operation, good stability.

Description

Technical Field

[0001] This utility model belongs to the field of splicing display technology, specifically relating to a fine-tuning flatness calibration mechanism for splicing displays. Background Technology

[0002] Based on backlight source, as of 2021, video wall displays can be categorized into LED LCD video walls, self-illuminating LED LCD video walls, and DLP rear-projection video walls. The different backlight sources result in different product types. Each type of video wall display has seen advancements and developments in its respective field with technological updates. Among these, transparent video wall displays, particularly LED and OLED displays, are gradually gaining market acceptance.

[0003] Currently, video wall displays are increasingly widely used in large-scale exhibition settings such as command and dispatch, and advertising. However, ensuring a highly flat display plane when physically splicing multiple screens, and avoiding visual disjointedness caused by slight misalignment of individual screen units, has always been a technical challenge in the industry. Traditional installation and fixing methods rely heavily on the experience of installers for manual coarse adjustments, lacking a precise and quantifiable fine-tuning mechanism. This manual approach is not only inefficient but also struggles to achieve millimeter- or sub-millimeter-level precise alignment, easily leading to unevenness on the spliced ​​surface. Furthermore, rigid connection structures are prone to stress due to temperature changes or slight vibrations during long-term use, which may cause slight displacement of the screen position, affecting long-term flatness stability, and even posing a risk of damaging the components on the back of the display screen due to rigid contact.

[0004] Therefore, the industry needs a dedicated calibration mechanism that can achieve precise, independent, and stable adjustments and has good engineering adaptability to improve the overall visual effect and reliability of video wall displays. Utility Model Content

[0005] The purpose of this invention is to provide a fine-tuning flatness calibration mechanism for splicing displays to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fine-tuning flatness calibration mechanism for a splicing display screen, comprising several interconnected frames and a display screen mounted on the front side of the frames. Each frame is rectangular, and each frame has a positioning shaft fixedly connected to its four inner corners. The other end of each positioning shaft points to the center point of the frame, and a rear plate is fixedly connected to the rear side of each positioning shaft. Each positioning shaft has a through-groove at its end near the frame, and an inner groove with one through-groove is located behind the outer groove, and a calibration adjustment mechanism is installed thereon. A controller is located in the middle of the rear end of the display screen, and a base plate is fixedly connected to each of the four rear corners of the display screen. A fixing shaft is fixedly connected to the rear end of each base plate.

[0007] It should be noted in the solution that each calibration and adjustment mechanism includes an auxiliary spring located inside the inner groove and a sliding block that is slidably connected to the inner groove. The sliding block and the auxiliary spring are fixedly connected to each other, and the other end of each sliding block is fixedly connected to a sliding shaft. Each sliding shaft passes through the inner groove and extends into the outer groove. Each sliding shaft is provided with two positioning holes, one at the front and one at the back. Each positioning hole on the rear side is slidably connected to a screw. The front end of each screw is embedded in and slidably connected to the rear end of the connecting plate, and the rear end of each screw is threaded to the middle of the fixed plate and fixedly connected to a rotating handle. The fixed plate is fixedly connected to the rear end of the positioning shaft.

[0008] It is worth noting that the connecting plate is rectangular, fits into the outer groove, and has a buffer pad at the front end.

[0009] Furthermore, it should be noted that the rotating handle is cylindrical, and the curved surface of the rotating handle is provided with anti-slip texture. Additionally, one side of the rotating handle should have a rotation scale, which corresponds to the distance between the connecting plate and the fixing plate.

[0010] In a preferred embodiment, the fixed shafts are fixedly connected to the frame by passing through the corresponding front positioning holes.

[0011] In a preferred embodiment, the display screen and the corresponding frame should have the same area.

[0012] In a preferred embodiment, the rear panel is provided with several heat dissipation grooves on its rear side.

[0013] Compared with the prior art, the fine-tuning flatness calibration mechanism for splicing displays provided by this utility model has at least the following beneficial effects:

[0014] (1) The core advantage of this calibration mechanism lies in its precise mechanical fine-tuning capability. The flatness adjustment of traditional splicing screens often relies on the experience of installers for coarse adjustments, making it difficult to eliminate subtle unevenness. This mechanism, through a unique screw drive and spring-assisted reset design, achieves precise and independent control of the front and rear positions of each display screen. During installation or calibration, the operator only needs to rotate the rotating handle at a specific position to precisely control the extension of the connecting plate by screwing the screw in or out, thereby pushing or releasing the fixing point on the back of the display screen. This adjustment method is quantitatively precise, and its rotation scale makes the adjustment amount visible, avoiding the uncertainty of adjustment by feel. Ultimately, it can effectively eliminate the slight front and rear misalignment between adjacent screen units, making the entire screen wall form an extremely flat visual plane, fundamentally eliminating the differences in light reflection and visual fragmentation caused by physical unevenness, thereby greatly improving the immersiveness and integrated display effect of the overall picture.

[0015] (2) The design of this mechanism fully considers the stability and environmental adaptability of long-term use. The auxiliary spring inside not only provides a reverse force for adjustment, but more importantly, it continuously applies a forward preload to the sliding block and connecting plate. This ensures that the display screen maintains close contact with the adjustment mechanism when subjected to slight vibrations or impacts, preventing flatness failure due to loosening and enhancing the overall structural stability. At the same time, the spring element gives the mechanism a certain degree of flexible buffering capacity, which can absorb some of the thermal expansion and contraction stress caused by temperature changes in the frame or the display screen itself, avoiding deformation or damage that may be caused by rigid connections. This protects the display screen and its supporting structure and helps extend the service life of the entire system. In addition, the modular design allows each calibration unit to work independently. If a unit needs maintenance, it can be operated independently without disassembling the entire screen wall, significantly reducing the difficulty and cost of later maintenance. The heat dissipation slots designed on the rear plate further ensure the heat dissipation needs of the mechanism and the display screen during long-term operation, improving reliability. Attached Figure Description

[0016] Figure 1 This is a front structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the frame structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the display screen structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the calibration and adjustment mechanism of this utility model. Figure 1 ;

[0020] Figure 5 This is a schematic diagram of the calibration and adjustment mechanism of this utility model. Figure 2 .

[0021] In the diagram: 1. Frame; 2. Display screen; 201. Base plate; 202. Fixed shaft; 203. Controller; 3. Positioning shaft; 301. Inner groove; 302. Outer groove; 4. Rear plate; 401. Heat dissipation groove; 5. Calibration and adjustment mechanism; 501. Auxiliary spring; 502. Sliding block; 503. Sliding shaft; 504. Fixed plate; 505. Positioning hole; 506. Connecting plate; 5061. Buffer pad; 507. Screw; 508. Rotating handle; 5081. Anti-slip texture. Detailed Implementation

[0022] The present invention will be further described below with reference to the embodiments.

[0023] Please see Figure 1-5 This utility model provides a fine-tuning flatness calibration mechanism for a splicing display screen, comprising: several interconnected frames 1 and a display screen 2 disposed on the front side of the frames 1. The frames 1 are all rectangular, and each of the four corners of the middle of the frame 1 is fixedly connected to a positioning shaft 3. The other end of each positioning shaft 3 points to the center point of the frame 1, and a rear plate 4 is fixedly connected to the rear side of each of the other ends of the positioning shaft 3. Each positioning shaft 3 is provided with a front-to-back through groove 302 near the end of the frame 1, and each positioning shaft 3 is provided with a one-sided through groove 301 on the rear side of the outer groove 302, and a calibration adjustment mechanism 5 is installed thereon. A controller 203 is disposed in the middle of the rear end of the display screen 2, and a base plate 201 is fixedly connected to each of the four corners of the rear end of the display screen 2. A fixing shaft 202 is fixedly connected to the rear end of each base plate 201.

[0024] Further as Figure 4 and Figure 5 As shown, it is worth noting that each calibration adjustment mechanism 5 includes an auxiliary spring 501 located inside the inner groove 301 and a sliding block 502 that is slidably connected to the inner groove 301. The sliding block 502 and the auxiliary spring 501 are fixedly connected to each other, and a sliding shaft 503 is fixedly connected to the other end of each sliding block 502. The sliding shaft 503 passes through the inner groove 301 and extends into the outer groove 302. Each sliding shaft 503 is provided with two positioning holes 505, and a screw 507 is slidably connected to the rear positioning hole 505. The front end of the screw 507 is embedded and... The sliding connection is to the rear end of the connecting plate 506, and the rear end of the screw 507 is threaded to the middle of the fixed plate 504, and a rotating handle 508 is fixedly connected thereto. The fixed plate 504 is fixedly connected to the rear end of the positioning shaft 3. The calibration and adjustment mechanism converts the rotation of the rotating handle 508 into the precise linear motion of the connecting plate 506 through the threaded engagement of the screw 507 and the fixed plate 504, so as to achieve precise fine-tuning of the position of the display screen 2. The auxiliary spring 501 provides continuous elastic force to the sliding block 502, which not only ensures the stability of the adjustment, but also absorbs structural stress and prevents the components from loosening.

[0025] Further as Figure 4 and Figure 5 As shown, it is worth noting that the connecting plate 506 is rectangular and fits into the outer groove 302. The front end of the connecting plate 506 is provided with a buffer pad 5061. The fitting design of the connecting plate 506 and the outer groove 302 ensures the smoothness and straightness of its movement and prevents jamming. The buffer pad 5061 at the front end effectively avoids scratches or hard impacts on the display screen 2 when directly pushing against the back of the display screen 2, thus playing a protective role.

[0026] Further as Figure 4 and Figure 5 As shown, it is worth noting that the rotating handle 508 is cylindrical, and the curved surface of the rotating handle 508 is provided with anti-slip texture 5081. The rotating handle 508 should also have a rotation scale on one side, which corresponds to the distance between the connecting plate 506 and the fixed plate 504. The anti-slip texture 5081 on the rotating handle 508 increases the friction, making manual operation more effortless and reliable. The rotation scale on its side visualizes the distance between the connecting plate 506 and the fixed plate 504, allowing the operator to make precise quantitative adjustments, which significantly improves the accuracy and efficiency of calibration.

[0027] This solution involves the following steps: During installation, the fixed shaft 202 of the display screen 2 passes through the front positioning hole 505 on the sliding shaft 503 and connects to the frame 1. For leveling, the operator rotates the handle 508, causing the screw 507 to rotate. Since the screw 507 is threadedly connected to the fixed plate 504, its rotational motion is converted into linear motion, pushing or pulling the connecting plate 506, which is slidably connected to it, to move back and forth in the outer groove 302. The connecting plate 506 pushes against the back of the display screen 2 through the buffer pad 5061, thereby precisely adjusting its front and back position. Simultaneously, the sliding shaft 503 slides in the inner groove 301, and is elastically supported by the auxiliary spring 501, ensuring the stability of the adjustment and absorbing some stress, ultimately achieving high-precision flatness adjustment of the splicing surfaces of multiple display screens 2.

[0028] As can be seen from the above working process: the calibration and adjustment mechanism, through the threaded engagement of the screw 507 and the fixed plate 504, converts the rotation of the handle 508 into the precise linear motion of the connecting plate 506, achieving precise fine-tuning of the position of the display screen 2; the auxiliary spring 501 provides continuous elastic force to the sliding block 502, ensuring the stability of the adjustment and absorbing structural stress to prevent component loosening. The fitting design of the connecting plate 506 and the outer groove 302 ensures the smoothness and linearity of its movement, preventing jamming; the front buffer pad 5061 effectively avoids scratches or hard impacts to the display screen 2 when directly pushing against its back, playing a protective role. The anti-slip texture 5081 on the handle 508 increases friction, making manual operation more effortless and reliable; the rotation scale on its side visualizes the distance between the connecting plate 506 and the fixed plate 504, allowing the operator to make precise quantitative adjustments, significantly improving the accuracy and efficiency of calibration.

[0029] Further as Figure 2 and Figure 3 As shown, it is worth noting that the fixed shaft 202 passes through the corresponding front positioning hole 505 and is fixedly connected to the frame 1. The fixed shaft 202 passes through the front positioning hole 505 on the sliding shaft 503 and is connected to the frame 1. This structure directly links the installation and fixing point of the display screen 2 with the moving parts of the calibration mechanism, ensuring that the adjustment action can be transmitted to the display screen 2 without damage, and realizing the integration of support and adjustment functions.

[0030] Further as Figure 1 As shown, it is worth noting that the display screen 2 and the corresponding frame 1 should have the same area. The requirement that the display screen 2 and the corresponding frame 1 have the same area ensures that each display unit and its mechanical support structure are perfectly matched on the physical boundary. This provides a basic structural guarantee for the seamless splicing of multiple units and avoids uneven splicing caused by size differences.

[0031] Further as Figure 2 and Figure 3 As shown, it is worth noting that the rear panel 4 is provided with several heat dissipation slots 401. The heat dissipation slots 401 provided on the rear panel 4 enhance the air circulation inside the mechanism, and can promptly dissipate the heat generated by the display screen 2 and controller 203 during operation, effectively preventing performance degradation or shortened equipment life due to overheating, and improving the reliability of the system.

[0032] In summary: The fixed shaft 202 passes through the front positioning hole 505 on the sliding shaft 503 and connects to the frame 1. This structure directly links the mounting point of the display screen 2 with the moving parts of the calibration mechanism, ensuring that adjustment actions can be transmitted to the display screen 2 without damage, thus achieving the integration of support and adjustment functions. The requirement that the display screen 2 and the corresponding frame 1 have the same area ensures that each display unit and its mechanical support structure are perfectly matched on the physical boundary, providing a basic structural guarantee for seamless splicing of multiple units and avoiding uneven seams caused by size differences. The heat dissipation slots 401 set in the rear plate 4 enhance the air circulation inside the mechanism, enabling timely dissipation of heat generated by the display screen 2 and controller 203 during operation, effectively preventing performance degradation or shortened equipment life due to overheating, and improving the reliability of the system.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fine-tuning flatness calibration mechanism for a splicing display screen, comprising a plurality of interconnected frames (1) and a display screen (2) disposed on the front side of the frames (1), characterized in that: The frame (1) is rectangular, and the four corners of the middle part of the frame (1) are fixedly connected with positioning shafts (3). The other end of the positioning shafts (3) points to the center point of the frame (1). The rear side of the other end of the positioning shafts (3) is fixedly connected with a rear plate (4). The end of the positioning shafts (3) near the frame (1) is provided with an outer groove (302) that runs through the front and back. The rear side of the positioning shafts (3) is provided with an inner groove (301) that runs through one side, and a calibration and adjustment mechanism (5) is installed. The middle of the rear end of the display screen (2) is provided with a controller (203). The four corners of the rear end of the display screen (2) are fixedly connected with a base plate (201). The rear end of the base plate (201) is fixedly connected with a fixing shaft (202).

2. The fine-tuning flatness calibration mechanism for a splicing display screen according to claim 1, characterized in that: Each calibration adjustment mechanism (5) includes an auxiliary spring (501) located inside the inner groove (301) and a sliding block (502) that is slidably connected to the inner groove (301). The sliding block (502) and the auxiliary spring (501) are fixedly connected to each other, and the other end of the sliding block (502) is fixedly connected to a sliding shaft (503). The sliding shaft (503) passes through the inner groove (301) and extends into the outer groove (302). The sliding shaft (503) is provided with two positioning holes (505) at the front and rear. The positioning hole (505) at the rear is slidably connected to a screw (507). The front end of the screw (507) is embedded and slidably connected to the rear end of the connecting plate (506). The rear end of the screw (507) is threadedly connected to the middle of the fixing plate (504) and fixedly connected to a rotating handle (508). The fixing plate (504) is fixedly connected to the rear end of the positioning shaft (3).

3. The fine-tuning flatness calibration mechanism for a splicing display screen according to claim 2, characterized in that: The connecting plate (506) is rectangular and fits into the outer groove (302), and the front end of the connecting plate (506) is provided with a buffer pad (5061).

4. The fine-tuning flatness calibration mechanism for a splicing display screen according to claim 3, characterized in that: The rotating handle (508) is cylindrical, and the curved surface of the rotating handle (508) is provided with anti-slip texture (5081). The rotating handle (508) should have a rotation scale on one side, and the rotation scale corresponds to the distance between the connecting plate (506) and the fixing plate (504).

5. The fine-tuning flatness calibration mechanism for a splicing display screen according to claim 4, characterized in that: The fixed shaft (202) passes through the corresponding front positioning hole (505) and is fixedly connected to the frame (1).

6. The fine-tuning flatness calibration mechanism for a splicing display screen according to claim 1, characterized in that: The display screen (2) and the corresponding frame (1) should have the same area.

7. The fine-tuning flatness calibration mechanism for a splicing display screen according to claim 1, characterized in that: The rear plate (4) has several heat dissipation grooves (401) on its rear side.

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