A large screen lifting and folding mechanism and a broadcasting vehicle display screen with the same

Abstract

The application discloses a large-screen lifting and folding mechanism and a display screen of a relay vehicle with the same, and belongs to the technical field of relay vehicle equipment. The large-screen lifting and folding mechanism comprises a fixed support, a sliding support, a folding support and a driving assembly. The sliding support is in sliding cooperation with the fixed support through a linear sliding rail and a wrapped sliding block. The sliding support is hingedly connected with the folding support through a long row hinge. The electric lifting column of the driving assembly drives the sliding support to vertically lift. The electric push rod drives the folding support to overturn. The push rod axis is perpendicular to the rotating axis of the folding support. The maximum overturning angle of the folding support is 90 DEG. The display screen body of the display screen of the relay vehicle is fixed to the folding support. After the large screen is folded in place, the height of the operator's elbow can be adapted, and the electronic sand table can be used for interaction. The application can complete the lifting and folding actions of the large screen respectively, effectively improve the adaptability, and meet the diverse operation requirements of the relay vehicle.

Description

Technical Field

[0001] This application relates to the field of broadcast van equipment technology, and in particular to a large screen lifting and folding mechanism and a broadcast van display screen having the mechanism. Background Technology

[0002] Broadcast vans are important mobile devices in the broadcasting and television industry, mainly used for the acquisition, processing and transmission of live program signals. The display screens on the broadcast vans are usually fixed on the walls of the interior studio to display video signals or data information in real time.

[0003] In related technologies, the existing installation methods of broadcast van displays are mostly static and fixed, which cannot be adjusted according to usage needs. Moreover, the internal space of broadcast vans is limited and the equipment layout is compact. With the diversification of broadcast van functions, a single display mode can no longer meet the actual work needs. For example, when an electronic sand table function is required, a fixed-height display screen cannot provide a good interactive experience.

[0004] The existing broadcast van displays have the following problems: the height of the display is fixed after installation, which makes them less adaptable to different usage scenarios. Utility Model Content

[0005] To improve adaptability, this application provides a large-screen lifting and folding mechanism and a broadcast van display screen having the mechanism.

[0006] The large-screen lifting and folding mechanism provided in this application adopts the following technical solution: A large screen lifting and folding mechanism includes a fixed bracket, a sliding bracket, a folding bracket, and a drive assembly. The fixed bracket is fixed to the wall, the sliding bracket is slidably connected to the fixed bracket, and the folding bracket is hinged to the sliding bracket. The drive assembly drives the sliding bracket to move vertically and causes the folding bracket to move downwards. Then, the drive assembly drives the folding bracket to flip relative to the sliding bracket to form a preset angle.

[0007] By adopting the above technical solution, the height and angle of the large screen fixed on the bracket can be switched to meet the usage needs of different scenarios, thereby improving adaptability and space utilization.

[0008] Preferably, the fixed bracket is provided with linear slide rails in the middle and on both sides, wherein the linear slide rails on the left and right sides of the fixed bracket are heavy-duty slide rails, and the sliding bracket is provided with matching wrap-around sliders corresponding to the linear slide rails.

[0009] By adopting the above technical solutions, the sliding support is ensured to remain stable during movement, reducing the risk of jamming or tilting caused by off-center loading.

[0010] Preferably, the sliding bracket and the folding bracket are hinged together by a long row of hinges.

[0011] By adopting the above technical solution, the synchronization error of the flipping action of the folding bracket and the sliding bracket is reduced, and the load-bearing capacity is improved by using multi-point distributed load.

[0012] Preferably, the drive assembly includes at least two electric lifting columns and an electric push rod. The fixed end of the electric lifting column is connected to the bottom of the fixed bracket, and the telescopic end is connected to the sliding bracket. The lifting axis of the electric lifting column is coaxial with the moving direction of the sliding bracket. The fixed end of the electric push rod is hinged to the bottom of the sliding bracket, and the telescopic end is hinged to the middle of the folding bracket. The telescopic axis of the electric push rod is perpendicular to the rotation axis of the folding bracket.

[0013] By adopting the above technical solution, the lifting axis of the electric lifting column is coaxial with the moving direction of the sliding bracket, which can directly drive the sliding bracket to lift and lower smoothly, thereby realizing screen height adjustment; the electric push rod is hinged to the bottom of the sliding bracket and the middle of the folding bracket, and its axis is perpendicular to the rotation axis of the folding bracket. The pushing and pulling force is efficiently converted into folding torque, which drives the folding bracket to complete the screen tilting and folding; the two work together to independently adjust the height and tilt angle of the screen, adapting to various usage postures of the broadcast van's large screen.

[0014] Preferably, the travel limit of the flipping drive is 90°, and when the folding bracket flips to the limit position, it triggers the mechanical limit block to contact the stop surface of the sliding bracket.

[0015] By adopting the above technical solution, each flipping action can reach the same extreme position, which is suitable for scenarios that require a fixed angle. This ensures both ease of operation and reduces the occurrence of situations where angle deviations affect the performance.

[0016] Preferably, the fixed bracket, the sliding bracket, and the folding bracket are all made of 40*20 steel pipe.

[0017] By adopting the above technical solutions, the overall mechanical strength and resistance to deformation have been improved.

[0018] Preferably, a broadcast van display screen includes a large screen lifting and folding mechanism, and also includes a display screen body, the display screen body being fixedly connected to the folding bracket.

[0019] By adopting the above technical solutions, the rapid deployment, stable operation, and flexible adjustment of the broadcast van's display screen have been achieved, meeting the stringent requirements of modern ultra-high-definition broadcasting.

[0020] Preferably, after the display screen body folds to the end of its travel along the folding bracket, it forms a natural interactive plane with the height of the operator's elbow while seated, and can be used as an electronic sand table.

[0021] By adopting the above technical solutions, the display screen can flexibly switch between wall display mode and electronic sand table mode, improving the multifunctionality of the display screen and the interactive experience of the staff.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. It enables the height and angle adjustment of the large screen fixed on the bracket to meet the usage needs of different scenarios, improving adaptability and space utilization; 2. Ensure the sliding support remains stable during movement to reduce the risk of jamming or tilting due to off-center loading; 3. It reduces the synchronization error of the flipping action of the folding bracket and the sliding bracket, and improves the load-bearing capacity by distributing the load at multiple points. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0024] Figure 2 This is a schematic diagram of the usage scenario of Embodiment 2 of this application.

[0025] Explanation of reference numerals in the attached drawings: 1. Display screen body; 2. Fixed bracket; 21. Linear slide rail; 3. Sliding bracket; 31. Slider; 4. Folding bracket; 41. Long row hinge; 5. Drive assembly; 51. Electric lifting column; 52. Electric push rod. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0027] Example 1 This application discloses a large-screen lifting and folding mechanism. (Refer to...) Figure 1 A large screen lifting and folding mechanism includes a fixed bracket 2, a sliding bracket 3, a folding bracket 4, and a drive component 5. The fixed bracket 2 is fixed to the wall, the sliding bracket 3 is slidably connected to the fixed bracket 2, and the folding bracket 4 is hinged to the sliding bracket 3. The drive component 5 drives the sliding bracket 3 to move vertically and causes the folding bracket 4 to move downward. Then, the drive component 5 drives the folding bracket 4 to flip relative to the sliding bracket 3 to form a preset angle.

[0028] Therefore, the device achieves the adjustment of the screen's height and folding angle through mechanical structure linkage, which can be adapted to different installation environments and usage scenarios. When not in use, the screen can be folded up and pressed against the wall, saving space and effectively improving adaptability and space utilization.

[0029] Specifically, linear slide rails 21 are installed in the middle and on both sides of the fixed bracket 2. The linear slide rails 21 located on the left and right sides of the fixed bracket 2 are heavy-duty slide rails. Matching wrap-around sliders 31 are fixed on the sliding bracket 3 corresponding to the linear slide rails 21.

[0030] Correspondingly, the fixed bracket 2 adopts a three-rail layout design. The heavy-duty slide rails on both sides bear the main vertical load, the middle slide rail assists in guidance, and the wrap-around slider 31 on the sliding bracket 3 forms a full-enclosed contact with the slide rail. It can withstand the impact force or other dynamic loads when the large screen device is suddenly started and stopped, and can also reduce accidental detachment and improve safety. The wrap-around contact surface inside the slider 31 is made of wear-resistant material to achieve smooth linear movement.

[0031] In summary, the wrap-around slider 31 disperses pressure through multi-point contact, reducing single-point wear. Together with the fixed bracket 2, the three-point support structure ensures that the sliding bracket 3 remains stable during movement, reducing the risk of jamming or tilting caused by off-center loading, improving lifting stability and repeatability accuracy. Compared with single-rail or double-rail designs, it effectively extends service life and is suitable for scenarios that require frequent lifting and have high stability requirements.

[0032] On the other hand, the sliding bracket 3 and the folding bracket 4 are hinged together by the long row of hinges 41. The pins and blades of the long row of hinges 41 are interference-fitted, which can reduce the angle error of the folding bracket 4 when it is flipped. The multi-axis linkage design improves the consistency of the lifting and flipping actions of the folding bracket 4 and the sliding bracket 3, as well as the overall smoothness of the action, and meets the precise requirements of the large screen device for the preset angle.

[0033] Furthermore, the long hinge 41, through the linkage design of multiple blades and pins, evenly distributes the weight of the folding bracket 4 to multiple connection points of the sliding bracket 3, reducing local stress concentration. Its thickened blades and reinforcing ribs can resist the dynamic impact force during the lifting and lowering process of the large screen, reducing the risk of deformation of the hinge part due to frequent movement. At the same time, it is double fixed with the anti-loosening nut, reducing the occurrence of screw vibration and loosening.

[0034] In addition, the fixed bracket 2, the sliding bracket 3 and the folding bracket 4 are made of steel pipes of 40*20*2.0, 40*20*1.5 and 40*20*1.5 respectively, which are suitable for installation in narrow spaces. When used with components such as the wrap-around slider 31 and the long row of hinges 41, they can achieve a compact layout and improve space utilization. Their standardized rectangular cross-section is easy to process and connect, and can be quickly fixed by welding or bolts, reducing assembly complexity.

[0035] Furthermore, the 40mm×20mm cross-sectional dimensions of the steel pipe provide a high section modulus of bending resistance, high tensile strength and yield strength, and can effectively withstand the lifting impact force or other dynamic loads of large screen equipment. The 1.5-2.0mm steel pipe wall thickness formed after cold bending or hot rolling also has a large moment of inertia of the section, which can resist the torsional stress during the bending process and reduce the risk of structural deformation.

[0036] Corresponding to the above process, in this embodiment, the drive component 5 includes two electric lifting columns 51 and an electric push rod 52. The two electric lifting columns 51 are respectively installed on the left and right sides of the central linear slide rail 21. Their fixed ends are fixedly connected to the bottom frame end face of the fixed bracket 2, and their telescopic ends are fixedly connected to the top frame end face of the sliding bracket 3. The lifting axis is coaxial with the moving direction of the sliding bracket 3.

[0037] Furthermore, two electric push rods 52 are respectively installed on the inner sides of the bottom ends of the fixed bracket 2. The fixed end is hinged to the bottom frame end face of the sliding bracket 3, and the telescopic end is hinged to the inner side of the middle part of the folding bracket 4. The telescopic axis of the electric push rod 52 is perpendicular to the rotation axis of the folding bracket 4.

[0038] Therefore, the double lifting column design forms symmetrical support, reducing the problem of uneven load caused by single-point force, ensuring a smooth and wobbly lifting process. The coaxial setting makes the lifting direction consistent with the guide rail, improving the positioning accuracy. When the drive signal is triggered, the electric lifting column 51 extends and retracts synchronously along its telescopic axis, pushing the sliding bracket 3 to rise and fall vertically along the linear guide rail 21 of the fixed bracket 2. When the sliding bracket 3 reaches the target height, the electric push rod 52 is activated, driving the folding bracket 4 to rotate around the hinge point through telescopic movement. The amount of push rod extension and retraction directly controls the folding angle. The vertical axis design ensures that the flipping torque is maximized, reducing drive energy consumption and reducing mechanical interference between structures.

[0039] Specifically, the maximum flip angle of the folding bracket 4 is configured to be 90°. When the folding bracket 4 flips to the limit position, it triggers the mechanical limit block (not shown in the attached figure) to contact the stop surface of the sliding bracket 3. At the moment of contact, a significant mechanical resistance is generated. The drive component 5 can detect the change in resistance and automatically stop the action to form a stable working angle and reduce the risk of motor overload. The limit block is usually made of elastic material or buffer structure to reduce the direct impact between metal parts and extend the structural life.

[0040] In summary, this structural design combines mechanical limiting and electronic control to ensure that each flipping action reaches the same limit position, reducing the risk of exceeding the flipping angle due to user misoperation or program error, and achieving highly reliable angle control. Compared with a purely electronic limiting solution, it has stronger anti-interference capabilities, ensuring both operational convenience and reducing the occurrence of situations where angle deviation affects the use effect, making it suitable for scenarios that require a fixed angle.

[0041] The implementation principle of the large screen lifting and folding mechanism in this application embodiment is as follows: the device realizes the adjustment of the lifting height and folding angle of the large screen through mechanical structure linkage, which can be adapted to different installation environments and usage scenarios. When the large screen is not in use, it can be folded up and close to the wall, saving space and effectively improving adaptability and space utilization.

[0042] Example 2 This application discloses a display screen for a broadcast van. (See also...) Figure 2 A broadcast van display screen includes a large screen lifting and folding mechanism, and a display screen body 1, which is fixedly connected to a folding bracket 4. When the display screen body 1 is driven by the electric lifting column 51 of the large screen lifting and folding mechanism to slide the sliding bracket 3 upward and hover at the highest point of the fixed bracket 2, it can be used as a display screen; when the display screen body 1 is folded to the end of its travel along the folding bracket 4, it forms a natural interactive plane with the height of the operator's elbow while seated, and can be used as an electronic sand table.

[0043] The implementation principle of the broadcast van display screen in this application embodiment is as follows: The display screen body 1 completes the adjustment and fixation of height and angle through an external mechanical structure, and can flexibly switch between wall display mode and electronic sand table mode, effectively improving the multifunctionality of the display screen and the interactive experience of the staff, realizing the rapid deployment, stable operation and flexible adjustment of the broadcast van display screen, and meeting the stringent requirements of modern ultra-high-definition broadcasting.

[0044] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A large-screen lifting and folding mechanism, characterized in that, The device includes a fixed bracket (2), a sliding bracket (3), a folding bracket (4), and a drive assembly (5). The fixed bracket (2) is fixed to the wall. The sliding bracket (3) is slidably connected to the fixed bracket (2). The folding bracket (4) is hinged to the sliding bracket (3). The drive assembly (5) drives the sliding bracket (3) to move vertically and causes the folding bracket (4) to move downward. Then, the drive assembly (5) drives the folding bracket (4) to flip relative to the sliding bracket (3) to form a preset angle.

2. The large screen lifting and folding mechanism according to claim 1, characterized in that, The fixed bracket (2) is provided with linear slide rails (21) in the middle and on both sides respectively. The linear slide rails (21) located on the left and right sides of the fixed bracket (2) are heavy-duty slide rails. The sliding bracket (3) is provided with matching wrap-around sliders (31) corresponding to the linear slide rails (21).

3. The large screen lifting and folding mechanism according to claim 1, characterized in that, The sliding bracket (3) and the folding bracket (4) are hinged together by a long row of hinges (41).

4. The large screen lifting and folding mechanism according to claim 3, characterized in that, The drive assembly (5) includes at least two electric lifting columns (51) and an electric push rod (52). The fixed end of the electric lifting column (51) is connected to the bottom of the fixed bracket (2), and the telescopic end is connected to the sliding bracket (3). The lifting axis of the electric lifting column (51) is coaxial with the moving direction of the sliding bracket (3). The fixed end of the electric push rod (52) is hinged to the bottom of the sliding bracket (3), and the telescopic end is hinged to the middle of the folding bracket (4). The telescopic axis of the electric push rod (52) is perpendicular to the rotation axis of the folding bracket (4).

5. A large-screen lifting and folding mechanism according to claim 4, characterized in that, When the folding bracket (4) is flipped to its limit position, it triggers the mechanical limit block to contact the stop surface of the sliding bracket (3), and the maximum flipping angle of the folding bracket (4) is 90°.

6. The large screen lifting and folding mechanism according to claim 1, characterized in that, The fixed bracket (2), the sliding bracket (3) and the folding bracket (4) are all made of 40*20 steel pipe.

7. A broadcast van display screen, comprising a large-screen lifting and folding mechanism as described in any one of claims 1-6, characterized in that, It also includes a display screen body (1), which is fixedly connected to the folding bracket (4).

8. A broadcast van display screen according to claim 7, characterized in that, After the display screen body (1) is folded to the end of the stroke along with the folding bracket (4), it forms a natural interactive plane with the height of the operator's elbow while sitting, and can be used as an electronic sand table.

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