A liftable conference screen

Abstract

The utility model relates to a liftable conference screen, including bottom plate, conference screen main part, support, first lifter and lifting frame, conference screen main part places the top of bottom plate, support places the upper end of bottom plate, and conference screen main part is on the support, be provided with guide rail on the support, be provided with sliding block on the guide rail, and the back of conference screen main part is connected with sliding block, first lifter is fixed and placed in the support, and first lifter is at the lower end of conference screen main part, when the telescopic end of first lifter telescopic, it drives conference screen main part to lift, lifting frame places on bottom plate, and lifting frame is at the below of conference screen main part, be provided with contact switch on lifting frame, when lifting frame ascending, contact switch contacts conference screen main part control lifting frame to stop ascending, and support conference screen main part. Relative to prior art, the utility model can reduce mechanical loss, prolong service life, can also promote operation stability and security, make it become the drag link through rotating lifting frame.

Description

Technical Field

[0001] This utility model relates to the field of conference screen technology, and more specifically, to a height-adjustable conference screen. Background Technology

[0002] A height-adjustable conference screen is an intelligent device used in modern conference scenarios. It can raise and lower the screen through electric or manual means, and has advantages such as saving space and improving meeting efficiency.

[0003] However, existing height-adjustable conference screens still have some problems after a period of use. After a period of use, the lifting mechanism of the height-adjustable conference screen needs to support the conference screen for a long time, which causes the lifting mechanism to be under pressure for a long time, making it prone to failure or weak lifting. Furthermore, the height-adjustable conference screen is inconvenient to move. It is moved by pushing the main body of the conference screen, but the force applied to the main body of the conference screen can easily cause the center of gravity of the height-adjustable conference screen to be unstable, affecting the overall moving efficiency and making the conference screen prone to tipping over. Utility Model Content

[0004] This invention aims to at least partially solve one of the aforementioned technical problems in the prior art. Therefore, one objective of this invention is to provide a liftable conference screen that reduces mechanical wear, extends service life, improves operational stability and safety, and allows the lifting frame to function as a tow rod.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A height-adjustable conference screen, comprising:

[0006] Base plate;

[0007] The main body of the conference screen is placed above the base plate;

[0008] A bracket is fixedly placed on the upper end of the base plate, and the main body of the conference screen is placed on the bracket; a guide rail is fixedly installed on the bracket, and a movable slider is installed on the guide rail, and the slider is fixedly connected to the back of the main body of the conference screen;

[0009] The first lifting device is fixedly placed inside the bracket and is located at the lower end of the main body of the conference screen. When the telescopic end of the first lifting device extends or retracts, it drives the main body of the conference screen to rise or fall.

[0010] A lifting frame is placed on the base plate and is located below the main body of the conference screen. A contact switch is provided on the lifting frame. When the lifting frame rises, the contact switch contacts the main body of the conference screen to control the lifting frame to stop rising and to support the main body of the conference screen.

[0011] Based on the above technical solution, the present invention can be further improved as follows.

[0012] Furthermore, it also includes:

[0013] The second lifting device is fixedly placed inside the lifting frame. When the second lifting device extends or retracts, it drives the lifting frame to rise or fall.

[0014] Furthermore, the lifting frame includes:

[0015] A rotating tube is rotatably connected to the base plate; the second lifting device is fixedly placed inside the rotating tube.

[0016] A T-shaped frame is placed on the rotating tube, and the lower end of the T-shaped frame extends into the rotating tube and is connected to the telescopic end of the second lifting device. The second lifting device drives the T-shaped frame to move up and down.

[0017] Furthermore, the inner wall of the rotating tube is provided with vertically arranged guide grooves; a guide rod is fixedly provided at the lower end of the T-shaped frame, and the guide rod is movably located within the guide grooves.

[0018] Furthermore, the lifting frame also includes:

[0019] A locking pin is fixedly placed on the base plate and located on one side of the rotating tube; the locking pin locks or unlocks the rotating tube.

[0020] Furthermore, it also includes:

[0021] A cover plate is fixedly placed on the back of the main body of the conference screen, and the cover plate covers the upper end of the bracket.

[0022] Furthermore, it also includes:

[0023] Multiple pulleys are placed at the lower end of the base plate and are rotatably connected to the base plate.

[0024] The beneficial effects of this utility model are: the lifting frame and the first lifting device share the weight of the conference screen body, reducing mechanical wear and significantly extending the service life of the core drive components; the lifting frame can also improve the stability and safety of equipment operation; the triggering logic of the contact switch realizes the intelligent linkage between the lifting frame and the conference screen body: it ensures that the lifting frame stops rising in time after the conference screen body is in place, and can automatically release the support when the conference screen body is raised, ensuring that there is no interference in the lifting process, the operation logic is clear and no manual intervention is required; at the same time, by rotating the lifting frame to make it a tow bar, the problem of inconvenient movement of traditional fixed conference screens is solved. Attached Figure Description

[0025] Figure 1 This is a front view of a height-adjustable conference screen according to the present invention;

[0026] Figure 2 This is a schematic diagram illustrating an embodiment of the present invention: a height-adjustable conference screen.

[0027] Figure 3 This is a rear view schematic diagram of the height-adjustable conference screen of this utility model when it is raised to the correct position.

[0028] Figure 4 This is a side view of the structure of a height-adjustable conference screen according to the present invention.

[0029] Figure 5 This is a side view of the structure of a liftable conference screen of this utility model when it is raised to the correct position.

[0030] Figure 6 This is a schematic diagram of the structure of the lifting frame of this utility model;

[0031] Figure 7 This is a schematic diagram of the extended structure of the lifting frame of this utility model.

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1. Base plate; 2. Conference screen body; 3. Support frame; 4. Guide rail; 5. Slider; 6. First lifter.

[0034] Lifting frame, 701, rotating tube, 702, T-shaped frame, 703, guide groove, 704, guide rod, 705, locking pin;

[0035] 8. Contact switch, 9. Second lifter, 10. Cover plate, 11. Pulley. Detailed Implementation

[0036] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0037] like Figures 1 to 7 As shown, a height-adjustable conference screen includes:

[0038] Base plate 1;

[0039] The main body of the conference screen 2 is placed above the base plate 1;

[0040] A bracket 3 is fixedly placed on the upper end of the base plate 1, and the main body 2 of the conference screen is placed on the bracket 3; a guide rail 4 is fixedly installed on the bracket 3, and a movable slider 5 is installed on the guide rail 4, and the slider 5 is fixedly connected to the back of the main body 2 of the conference screen.

[0041] The first lifting device 6 is fixedly placed inside the bracket 3. The first lifting device 6 is located at the lower end of the conference screen body 2. When the telescopic end of the first lifting device 6 extends or retracts, it drives the conference screen body 2 to rise or fall.

[0042] The lifting frame 7 is placed on the base plate 1 and is located below the main body of the conference screen 2. The lifting frame 7 is equipped with a contact switch 8. When the lifting frame 7 rises, the contact switch 8 contacts the main body of the conference screen 2 to control the lifting frame 7 to stop rising and to support the main body of the conference screen 2.

[0043] In practical applications, the lifting and lowering of the conference screen body 2 is driven by the first lifting device 6: when the height needs to be adjusted, the telescopic end of the first lifting device 6 extends or shortens, and through its connection with the conference screen body 2, it drives the slider 5 fixed on its back to slide smoothly along the guide rail 4 on the bracket 3, so as to achieve precise adjustment of the height of the conference screen body 2; the cooperation between the guide rail 4 and the slider 5 ensures that there is no deviation or shaking during the lifting and lowering process, while the bracket 3 and the base plate 1 provide stable support for the overall structure.

[0044] When the main body of the conference screen 2 descends to a preset position close to the base plate 1, the lifting frame 7 starts to rise synchronously. Its power source can be set independently or linked with the first lifting device 6. When the contact switch 8 at the top of the lifting frame 7 contacts the bottom of the main body of the conference screen 2, the contact switch 8 triggers a signal to control the lifting frame 7 to stop rising. At this time, the lifting frame 7 maintains its current height and becomes an auxiliary support structure for the main body of the conference screen 2, sharing the weight of the main body of the conference screen 2 with the first lifting device 6. If it is necessary to raise the main body of the conference screen 2 again, the first lifting device 6 starts to rise first, causing the main body of the conference screen 2 to disengage from the contact switch 8. After the contact switch 8 resets, the lifting frame 7 can descend synchronously to the initial position to avoid interfering with the lifting of the main body of the conference screen 2.

[0045] In this embodiment, the lifting frame 7 provides auxiliary support after the conference screen body 2 is lowered into position. Together with the first lifting device 6, it shares the weight of the conference screen body 2, reducing the long-term load pressure on the first lifting device 6, lowering mechanical wear, and significantly extending the service life of the core drive components. The auxiliary support structure reduces slight shaking of the conference screen body 2 during use, especially during touch operation or minor external impacts, preventing loosening of the connection between the conference screen body 2 and the guide rail 4 and the first lifting device 6 due to shaking. It also prevents deformation of the conference screen body 2 due to long-term single-point load-bearing, improving the stability and safety of equipment operation. The triggering logic of the contact switch 8... The system features intelligent linkage between the lifting frame 7 and the main body of the conference screen 2: it ensures that the lifting frame 7 stops rising promptly after the main body of the conference screen 2 is in place, and automatically releases its support when the main body of the conference screen 2 is raised, ensuring no interference during the lifting process. The operation logic is clear and requires no manual intervention. The lifting frame 7 is integrated into the base plate 1 and located below the main body of the conference screen 2, without occupying extra space, making the overall structure of the equipment more compact. At the same time, by rotating the lifting frame 7 to make it a tow bar, it solves the problem of inconvenient movement of traditional fixed conference screens. Without the need for additional tools or multiple people to carry it, a single person can push the equipment to move flexibly in conference rooms, exhibition halls and other scenarios, adapting to the needs of multiple scenario reuse.

[0046] The above embodiments also include:

[0047] The second lifting device 9 is fixedly placed inside the lifting frame 7. When the second lifting device 9 extends or retracts, it drives the lifting frame 7 to rise or fall.

[0048] In practical applications, the lifting and lowering of the conference screen body 2 is still dominated by the first lifting device 6: its telescopic end, through its connection with the conference screen body 2, drives the slider 5 to slide along the guide rail 4, thereby realizing the height adjustment of the conference screen body 2; the bracket 3 and the base plate 1 provide structural support, and the cooperation between the guide rail 4 and the slider 5 ensures the stability of the lifting trajectory; the lifting and lowering of the lifting frame 7 is independently driven by the second lifting device 9: the second lifting device 9 is fixed inside the lifting frame 7, and the extension / retraction of its telescopic end directly drives the lifting frame 7 to rise / fall as a whole; this design makes the movement of the lifting frame 7 and the lifting and lowering of the conference screen body 2 form an independent control logic, which facilitates precise adjustment of the support timing and height.

[0049] In this embodiment, the second lifter 9 provides independent power to the lifting frame 7. Its extension and retraction can be precisely controlled to adjust the lifting height of the lifting frame 7, ensuring that the contact force between the contact switch 8 and the conference screen body 2 is moderate, guaranteeing stable support while avoiding excessive pressure on the conference screen body 2. Compared to structures relying on gravity or passive triggering, this active drive method can adapt to conference screen bodies 2 of different weights, providing higher support reliability. The independent operation of the first lifter 6 and the second lifter 9 allows for diverse action combinations between the conference screen body 2 and the lifting frame 7: for example, during the lifting process of the conference screen body 2, the lifting frame 7 can be pre-adjusted to a preset height to await support; or, based on the load-bearing requirements of the conference screen body 2, through… The second lifter 9 fine-tunes the support force of the lifting frame 7, flexibly adapting to different usage scenarios such as touch control; the independently driven lifting frame 7 can actively meet and support the conference screen body 2 during its descent, avoiding the problem of the conference screen body 2's gravity directly impacting the contact switch 8 in traditional passive support structures; at the same time, the second lifter 9 can maintain a constant thrust during support, reducing wear on the contact parts between the lifting frame 7 and the conference screen body 2 caused by unstable force; if the first lifter 6 experiences a temporary malfunction, the second lifter 9 can drive the lifting frame 7 to rise to the highest position, temporarily supporting the conference screen body 2, preventing the conference screen body 2 from falling due to loss of support, buying time for fault repair, and improving the safety of equipment use.

[0050] In the above embodiments, the lifting frame 7 includes:

[0051] A rotating tube 701 is rotatably connected to the base plate 1; the second lifting device 9 is fixedly placed inside the rotating tube 701.

[0052] T-shaped frame 702 is placed on the rotating tube 701. The lower end of the T-shaped frame 702 extends into the rotating tube 701 and is connected to the telescopic end of the second lifting device 9. The second lifting device 9 drives the T-shaped frame 702 to rise and fall.

[0053] In practical applications, the power source is the second lifter 9, which is fixed inside the rotating tube 701. Its telescopic end is connected to the lower end of the T-shaped frame 702 that extends into the rotating tube 701. When the conference screen needs support, the second lifter 9 extends, pushing the T-shaped frame 702 upward along the inner wall of the rotating tube 701. After the top of the T-shaped frame 702 contacts the conference screen body 2, the contact switch 8 is triggered, the second lifter 9 stops extending and retracting, and the T-shaped frame 702 maintains its current height, sharing the weight of the screen with the first lifter 6. When the support needs to be released... The second lifting device 9 retracts, pulling the T-shaped frame 702 down into the rotating tube 701 to avoid interfering with the lifting of the conference screen. The rotating tube 701 and the base plate 1 are rotatably connected, such as a hinge structure, and can rotate around the connection point. When the conference screen does not need to be supported, the T-shaped frame 702 is completely retracted into the rotating tube 701. At this time, the entire lifting frame 7 can be rotated to change it from a vertical support state to a horizontal drag bar state. If the bottom of the base plate 1 is equipped with rollers, the user can push the entire device to move by holding the rotating tube 701 or the T-shaped frame 702.

[0054] In this embodiment, the lateral structure of the T-shaped frame 702 increases the contact area with the conference screen body 2. Compared with a single support point, it can more evenly distribute the weight of the conference screen body 2, reduce local stress on the bottom of the conference screen body 2, and avoid deformation of the conference screen body 2 due to long-term use. The rotating tube 701 provides a closed installation space for the lower end of the second lifter 9 and the T-shaped frame 702, which can protect the internal components from dust and collisions, while limiting the lifting trajectory of the T-shaped frame 702 to prevent it from shaking and deviating. The rotatable connection between the rotating tube 701 and the base plate 1 makes the switching of the lifting frame 7 between support / trail states smoother, without the need for disassembly or additional structural adjustments. The rotating structure can also be damped to prevent sudden drops due to gravity during rotation, thus improving operational safety. The height of the T-shaped frame 702 can be precisely adjusted by the second lifter 9 to adapt to conference screen bodies 2 of different thicknesses and weights. Only the extension stroke of the second lifter 9 needs to be adjusted to meet diverse support requirements without replacing the entire structure of the lifting frame 7.

[0055] In the above embodiment, a vertically arranged guide groove 703 is provided on the inner wall of the rotating tube 701; a guide rod 704 is fixedly provided at the lower end of the T-shaped frame 702, and the guide rod 704 is movably located within the guide groove 703.

[0056] In practical applications, when the second lifting device 9 drives the T-shaped frame 702 to rise or fall, the guide rod 704 at the lower end of the T-shaped frame will slide synchronously along the vertical guide groove 703 on the inner wall of the rotating tube 701. The guide groove 703 forms a rigid constraint on the guide rod 704, ensuring that the T-shaped frame 702 can only move in the vertical direction, avoiding the T-shaped frame 702 from tilting or getting stuck in the rotating tube 701 due to the slight eccentric force during the extension and retraction of the second lifting device 9 or external vibration. When the rotating tube 701 rotates around the base plate 1, the guide groove 703 rotates synchronously with the rotating tube, but the guide rod 704 only slides along the guide groove 703 when the T-shaped frame 702 rises or falls. The cooperation of the two retains the stability of the rotating tube 701. The rotational freedom of the T-frame 702 is further constrained by the sliding constraint between the guide groove 703 and the guide rod 704, ensuring that the lifting action of the T-frame 702 is not affected by the rotation of the rotating tube 701, thus achieving independent operation and non-interference between the rotation and lifting functions. When the T-frame 702 rises to support the main body of the conference screen 2, the contact between the guide rod 704 and the guide groove 703 can enhance the torsional resistance of the overall structure. If the main body of the conference screen 2 generates horizontal torque due to touch operation or external force, the force will be transmitted to the guide rod 704 through the T-frame 702, and then distributed to the rotating tube 701 and the base plate 1 by the guide groove 703, thus preventing the telescopic end of the second lifter 9 from being damaged due to additional torque.

[0057] In this embodiment, the cooperation between the guide groove 703 and the guide rod 704 eliminates radial swaying during the lifting and lowering of the T-frame 702, making the lifting action more stable. Especially when supporting the main body 2 of the conference screen, it can ensure the precise contact position between the contact switch 8 and the bottom of the screen, avoiding accidental triggering of the switch due to misalignment, while reducing mechanical friction noise and improving the user experience. The guide rod 704 undertakes the guiding and anti-torsion function during the lifting and lowering of the T-frame 702, which can distribute the radial force on the telescopic end of the second lifter 9, avoiding problems such as piston rod bending and seal wear caused by long-term uneven load on the lifting frame 7, and significantly extending the service life of the core drive components. When the lifting frame 7 rotates into the drag bar state, the guide rod 704 can be completely stored in the guide groove 703. The rigid structure formed by the two can enhance the connection strength between the rotating tube 701 and the T-frame 702, preventing the T-frame 702 from accidentally sliding out of the rotating tube 701 due to vibration when dragging the equipment, while improving the stability when holding the drag bar.

[0058] In the above embodiments, the lifting frame 7 further includes:

[0059] A locking pin 705 is fixedly placed on the base plate 1 and located on one side of the rotating tube 701; the locking pin 705 locks or unlocks the rotating tube 701.

[0060] In practical applications, when a lifting frame is needed to support the conference screen, first rotate the rotating tube 701 to keep it vertical and aligned with the bottom of the conference screen body 2; push the locking pin 705 to insert it into the preset positioning hole or slot of the rotating tube 701, fixing the rotating tube 701 in a vertical position to prevent it from rotating due to vibration or collision during support; then activate the second lifting device 9 to drive the T-shaped frame 702 to rise until the contact switch 8 touches the conference screen body 2, completing the support; during this process, the locking pin 705 continuously locks the rotating tube 701. 1. Ensure the stability of the support structure; when the equipment needs to be moved, first control the second lifting device 9 to retract, and completely retract the T-shaped frame 702 into the rotating tube 701; pull out the locking pin 705 to release the constraint on the rotating tube 701, and rotate the rotating tube 701 to change it from vertical to horizontal or inclined tow bar state; after the rotating tube 701 reaches the preset tow bar position, push the locking pin 705 again to insert it into the corresponding positioning hole to fix the rotating tube 701. At this time, the user can hold the rotating tube 701 to push the equipment to move without worrying about the tow bar accidentally rotating during the movement.

[0061] In this embodiment, in the supported state, the locking pin 705 fixes the rotating tube 701 to prevent it from rotating accidentally and causing the T-shaped frame 702 to deviate from the supported position, thus preventing the conference screen body 2 from losing support and tilting or falling. In the drag bar state, the locking pin 705 fixes the drag bar angle to prevent the drag bar from shaking or flipping during movement, thus improving grip stability. The insertion and locking / removal of the locking pin 705 is intuitive and easy to understand. Users can quickly determine whether the lifting frame 7 is in a safe and usable state by the state of the locking pin. If the locking pin 705 is inserted, it means that the state is fixed and can be used with confidence. It does not rely on complex electronic control indicators and is suitable for users with different levels of operating proficiency.

[0062] The above embodiments also include:

[0063] Cover plate 10 is fixedly placed on the back of the conference screen body 2, and the cover plate 10 covers the upper end of the bracket 3.

[0064] In this embodiment, after the cover plate 10 covers the upper end of the bracket 3, it can hide the internal mechanical structures such as the slider 5, guide rail 4, and first lifter 6 connector, making the back of the device simpler and flatter, meeting the aesthetic requirements of modern conference scenarios and avoiding cluttered structures from affecting the quality of the conference environment. Covering the internal moving parts can prevent fingers or clothing from being accidentally caught in the guide rail 4 or slider 5 when the user operates or moves around, and at the same time prevent dust, coffee stains and other foreign objects from falling into the bracket 3, reducing the risk of mechanical failure. The cover plate 10 can also serve as a protective baffle on the back of the conference screen body 2, which can buffer the impact of external forces on the connecting parts on the back of the screen when the device moves or is slightly bumped. At the same time, the cover structure can reduce the entry of humid air into the bracket, delay the corrosion of metal parts such as the guide rail 4 and the first lifter 6, and extend the service life of the device.

[0065] The above embodiments also include:

[0066] Multiple pulleys 11 are placed at the lower end of the base plate 1 and are rotatably connected to the base plate 1.

[0067] In this embodiment, multiple pulleys 11 convert the sliding friction between the device and the ground into rolling friction, greatly reducing movement resistance. A single person can push the device, solving the pain points of traditional fixed conference screens being difficult to move and cumbersome to adjust. It is suitable for the needs of frequent changes in conference room layout and reuse in multiple scenarios. The pulleys 11 are only installed at the lower end of the base plate 1, without occupying the front or side space of the device, and without interfering with the operation of core components such as the bracket 3, the first lifter 6, and the lifting frame 7. Its rotatable connection method is simple and reliable. In the later maintenance, only the pulleys need to be replaced, without disassembling other structures, thus reducing maintenance costs.

[0068] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A height-adjustable conference screen, characterized in that, include: Base plate; The main body of the conference screen is placed above the base plate; A bracket is fixedly placed on the upper end of the base plate, and the main body of the conference screen is placed on the bracket; a guide rail is fixedly installed on the bracket, and a movable slider is installed on the guide rail, and the slider is fixedly connected to the back of the main body of the conference screen; The first lifting device is fixedly placed inside the bracket and is located at the lower end of the main body of the conference screen. When the telescopic end of the first lifting device extends or retracts, it drives the main body of the conference screen to rise or fall. A lifting frame is placed on the base plate and is located below the main body of the conference screen. A contact switch is provided on the lifting frame. When the lifting frame rises, the contact switch contacts the main body of the conference screen to control the lifting frame to stop rising and to support the main body of the conference screen.

2. The height-adjustable conference screen according to claim 1, characterized in that, Also includes: The second lifting device is fixedly placed inside the lifting frame. When the second lifting device extends or retracts, it drives the lifting frame to rise or fall.

3. The height-adjustable conference screen according to claim 2, characterized in that, The lifting frame includes: A rotating tube is rotatably connected to the base plate; the second lifting device is fixedly placed inside the rotating tube. A T-shaped frame is placed on the rotating tube, and the lower end of the T-shaped frame extends into the rotating tube and is connected to the telescopic end of the second lifting device. The second lifting device drives the T-shaped frame to move up and down.

4. The height-adjustable conference screen according to claim 3, characterized in that, The inner wall of the rotating tube is provided with vertically arranged guide grooves; a guide rod is fixedly provided at the lower end of the T-shaped frame, and the guide rod is movably located within the guide grooves.

5. The height-adjustable conference screen according to claim 3, characterized in that, The lifting frame also includes: A locking pin is fixedly placed on the base plate and located on one side of the rotating tube; the locking pin locks or unlocks the rotating tube.

6. The height-adjustable conference screen according to claim 1, characterized in that, Also includes: A cover plate is fixedly placed on the back of the main body of the conference screen, and the cover plate covers the upper end of the bracket.

7. The height-adjustable conference screen according to claim 1, characterized in that, Also includes: Multiple pulleys are placed at the lower end of the base plate and are rotatably connected to the base plate.

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