A mobile display support stand

Abstract

The application relates to the high-end office field, and particularly discloses a mobile display support frame, which comprises a bearing chassis, mobile wheels, a main control module, a display mounting plate, a lifting column and a double-shaft adjusting mechanism. A first motor drives the display to horizontally swing through worm and gear transmission, and a second motor drives the display to pitch and swing through a planetary reducer. The mobile wheels are retractable mobile casters which are used in cooperation with retractable fixed legs to realize smooth switching between the mobile and fixed states under the control of the main control module. The main control module is used for centralized control, so that full-automatic and accurate adjustment of the height, horizontal angle and pitch angle of the display is realized, manual contact is avoided, the structure is stable and safe, and the mobile display support frame is suitable for various scenes. The design realizes electric and accurate adjustment of the height, horizontal angle and pitch angle of the display, avoids inconvenience and screen pollution caused by manual operation, and improves the convenience and safety in use.

Description

Technical Field

[0001] This utility model relates to the high-end office field, specifically to a mobile monitor support frame. Background Technology

[0002] A portable monitor stand is a movable frame used to support a monitor. It is typically used in large conferences, exhibition halls, and high-end trade shows.

[0003] As an indispensable piece of equipment in the modern office environment, its core function is to provide users with an ergonomic viewing angle to improve work efficiency and comfort. It is also portable and easy to place in different locations.

[0004] Existing monitor support products can be mainly divided into two categories according to their adjustment methods: manual adjustment type and simple fixed type.

[0005] Manually adjustable support frames typically employ mechanical structures to achieve limited adjustment of the display. For example, height adjustment is achieved by manually loosening a knob or wrench and using friction to lock the sleeve of the lifting column; or by manually manipulating the display to overcome the damping force of a ball joint or pivot, coarse positioning of the pitch and horizontal directions is achieved. While this approach offers some flexibility, its reliance on direct manual force application presents several inherent drawbacks. First, the repeated adjustment process is cumbersome and makes it difficult to achieve precise positioning; second, directly touching the monitor bezel or screen to turn it easily leaves fingerprints and oil stains on the screen surface, affecting the appearance and hygiene, and improper operation or failure of the locking mechanism can easily cause the monitor to lose its center of gravity and tip over.

[0006] Furthermore, to achieve mobility, existing products typically include casters on the base. However, existing caster-equipped support frames generally suffer from inconvenience when switching between mobile and stationary states. Their casters are mostly permanently mounted, meaning that even in a stationary state, the casters remain in contact with the ground, resulting in insufficient stability of the support frame and making it susceptible to slippage due to external impacts.

[0007] In summary, existing monitor support brackets have significant shortcomings in terms of ease of adjustment, precision, and overall stability. Utility Model Content

[0008] To address the issues of manual adjustment of displays and insufficient stability of support frames in existing technologies, this application provides a mobile display support frame.

[0009] To achieve the above objectives, the technical solution adopted in this application is as follows: A mobile display support frame includes a support chassis, casters disposed beneath the support chassis, and a main control module mounted on the support chassis. It also includes... Monitor mounting plate, used to fix the monitor in place; The lifting column includes two vertically arranged columns on the supporting chassis, with a cantilever frame extending laterally at the top. A dual-axis adjustment mechanism is disposed between the two cantilever frames and fixedly connected to the display mounting plate; The dual-axis adjustment mechanism includes a first motor and a second motor. The output shaft of the first motor is connected to a first worm and a first worm wheel, thereby driving the display mounting plate to swing horizontally around a vertical axis. The output shaft of the second motor is connected to the display mounting plate, thereby driving the display mounting plate to pitch and swing around the horizontal axis; The first motor, the second motor, and the lifting column are all electrically connected to the main control module.

[0010] Furthermore, a second worm is also provided on the output shaft of the first motor. The output shaft of the first motor is fixedly connected to the second worm, and the second worm is driven by a second worm wheel. The second worm wheel is fixedly installed on the transmission shaft, and the transmission shaft is fixedly connected to the first worm.

[0011] Furthermore, the second motor is a servo motor, and a planetary reducer is also provided on the output shaft of the servo motor. The output shaft of the planetary reducer is connected to the display mounting plate via a transmission.

[0012] Furthermore, the planetary gear reducer is a multi-stage planetary gear reducer.

[0013] Furthermore, the movable wheels are retractable movable casters, which include a frame and multiple telescopic guide rods for supporting the frame. Multiple omnidirectional wheels for supporting the frame are provided below the frame. One end of each telescopic guide rod is fixedly connected to the supporting chassis, and the other end is fixedly connected to the frame. The frame is also provided with a drive mechanism for driving the frame to move up and down relative to the supporting chassis.

[0014] Furthermore, the drive mechanism includes a servo motor fixedly connected to the support chassis and electrically connected to the main control module. The output shaft of the servo motor is fixedly connected to a lead screw. A threaded lead screw nut is fitted on the outer circumferential surface of the lead screw, and the lead screw nut is fixedly connected to the frame. The servo motor is configured to drive the lead screw to rotate according to the instructions of the main control module, thereby driving the frame to move up and down along the guide direction of the telescopic guide rod.

[0015] Furthermore, the supporting chassis has a recessed portion for accommodating the frame body. When the frame body is retracted, the casters leave the ground, and when it is extended, the casters contact the ground.

[0016] Furthermore, a fixed support foot is provided below the supporting chassis to support the supporting chassis when the frame is retracted into the recess. When the frame is retracted, the bottom end of the fixed support foot is the lowest point of the support frame; when the frame is fully extended, the bottom end of the caster wheel is the lowest point of the support frame.

[0017] Furthermore, the fixed support leg is a telescopic fixed support leg.

[0018] Furthermore, the telescopic fixed support leg is an electric telescopic rod, which is electrically connected to the main control module and whose telescopic action is controlled by the main control module; the telescopic action of the electric telescopic rod is configured as follows: after the frame descends to the point where the casters contact the ground, the electric telescopic rod begins to retract; when the frame begins to rise towards the recessed part, the telescopic fixed support leg begins to extend.

[0019] Beneficial effects: The main control module centrally controls the lifting column, dual-axis adjustment mechanism, and retractable casters, supporting one-button electric adjustment of the display height, horizontal angle, tilt angle, and overall movement / fixed status, significantly reducing the inconvenience of frequent manual operation.

[0020] Non-contact electric adjustment allows users to easily adjust the monitor's orientation without touching the screen or bezel. The horizontal adjustment utilizes a worm gear transmission mechanism with a reverse self-locking function, effectively preventing angular displacement of the monitor when stationary due to external forces. The multi-stage transmission structure achieves a large reduction ratio within a compact space, with a rational layout and stable operation.

[0021] Furthermore, precise control of the coordinated movement of the retractable casters and telescopic fixed legs enables a smooth and reliable switch between mobile and stationary states, reducing the risk of equipment slippage or tipping due to accidental collisions. The overall structure is simple, easy to operate, and suitable for industrial-scale promotion. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a side view of the overall structure of this utility model; Figure 2This is a rear view schematic diagram of the overall structure of this utility model; Figure 3 This is a right-side view of the overall structure of this utility model; Figure 4 This is a bottom view of the overall structure of this utility model; Figure 5 This is a schematic diagram of the first embodiment of the dual-axis adjustment mechanism of this utility model and its motion axis; Figure 6 This is a schematic diagram of the second embodiment of the dual-axis adjustment mechanism of this utility model and its motion axis; Figure 7 This is a schematic diagram of the worm gear reducer in the second embodiment of the dual-axis adjustment mechanism of this utility model; Figure 8 This is a schematic diagram of the internal structure of the worm gear reducer in the second embodiment of the dual-axis adjustment mechanism of this utility model; Figure 9 This is a schematic diagram of the internal structure of the planetary reducer in the second embodiment of this utility model; Figure 10 This is a schematic diagram of the recessed portion structure in the third embodiment of the present invention; Figure 11 This is a schematic diagram of the retractable mobile caster structure in the third embodiment of the present invention; Figure 12 This is a schematic diagram of the retracted state of this utility model; In the diagram: 1-Bearing chassis, 11-Fixed support leg, 12-Recessed part, 13-Platform, 2-Main control module, 3-Display, 31-Display mounting plate, 32-Connection hole, 4-Lifting column, 41-Cantilever frame, 5-Dual-axis adjustment mechanism, 51-First motor, 52-First worm gear, 53-First worm wheel, 54-Second motor, 6-Retractable casters, 61-Frame, 62-Servo motor, 63-Lead screw, 631-Lead screw nut, 64-Universal wheel, 65-Telescopic guide rod, 7-Worm gear reducer, 71-Second worm gear, 72-Second worm wheel, 73-Drive shaft, 8-Planetary reducer, 81-Output shaft disc, 82-Planetary reducer output shaft, 83-Second stage planetary gear, 84-Second stage sun gear, 85-First stage planetary gear disc, 86-First stage planetary gear, 87-First stage sun gear. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] Example 1: like Figures 1-5As shown in the figure, this utility model discloses a specific structure of a first embodiment of a mobile display support frame, including a supporting chassis, movable wheels disposed below the supporting chassis, and a main control module 2 disposed on the supporting chassis 1. It also includes a display mounting plate 31 for fixing a display 3; a lifting column 4, comprising two relatively vertically disposed on the supporting chassis 1, with cantilever frames 41 extending laterally at their top ends; and a dual-axis adjustment mechanism 5, disposed between the two cantilever frames 41 and fixedly connected to the display mounting plate 31. The dual-axis adjustment mechanism 5 includes a first motor 51 and a second motor 54. The output shaft of the first motor 51 is driven by a first worm gear 52 and a first worm wheel 53, thereby driving the display mounting plate 31 to swing horizontally around a vertical axis. The output shaft of the second motor 54 is driven by the display mounting plate 31, thereby driving the display mounting plate 31 to pitch around a horizontal axis. The first motor 51, the second motor 54, and the lifting column 4 are all electrically connected to the main control module 2.

[0031] Working principle: The core of this utility model is that through the centralized control of the main control module 2, multiple components are driven to work together, thereby realizing the fully automatic and precise adjustment of the spatial position of the display 3, replacing the traditional manual operation.

[0032] When it is necessary to adjust the height of the monitor 3 from the ground, the user issues a command through the main control module 2. The main control module 2 controls the lifting column 4 to operate, and the lifting column 4 performs telescopic movement, thereby smoothly raising and lowering the monitor 3 to the preset height.

[0033] When the left and right orientation of the display 3 needs to be adjusted, the main control module 2 controls the first motor 51 in the dual-axis adjustment mechanism 5 to operate. The first motor 51 drives the display mounting plate 31 to rotate around the vertical axis via a transmission mechanism consisting of the first worm gear 52 and the first worm wheel 53. Figure 7 The Y-axis swings horizontally. The worm gear mechanism not only reduces speed and increases torque, but its inherent reverse self-locking characteristic also ensures that the horizontal position of the display is reliably locked in the power-off state, and will not drift due to external forces.

[0034] When the tilt angle of the display 3 needs to be adjusted, the main control module 2 controls the second motor 54 in the dual-axis adjustment mechanism 5 to operate. The output of the second motor 54 directly drives the display mounting plate 31 around the horizontal axis through the transmission mechanism. Figure 7 The X-axis is tilted to allow the display screen to be precisely oriented toward the user.

[0035] Technical benefits: The mechatronics design overcomes the inherent defects of manual adjustment of the display in existing technologies. The main control module coordinates and controls each motor to automatically complete lifting, horizontal rotation, and pitch swing, solving the problem of cumbersome and inconvenient manual operation. It achieves non-contact and precise adjustment, avoiding fingerprint pollution caused by touching the screen. At the same time, the self-locking characteristics of the worm gear mechanism and the stable chassis support structure eliminate the risk of the display tipping over due to improper operation. This improves the convenience and hygiene of operation, while enhancing the reliability and safety of the equipment.

[0036] Example 2: In order to achieve better technical results, the second embodiment of this utility model makes further improvements on the dual-axis adjustment mechanism of the first embodiment. The difference between the second embodiment and the dual-axis adjustment mechanism is that different transmission and reduction mechanisms are respectively set on the output shafts of the first motor 51 and the second motor 54.

[0037] In this embodiment, the movable axis of the dual-axis adjustment mechanism is the same as that of the first embodiment.

[0038] Specifically: such as Figures 6-8 As shown, the transmission reduction mechanism of the first motor 51 is a worm gear reducer 7, which consists of a second worm 71 and a second worm wheel 72. As a first-stage reduction mechanism, the worm gear reducer 7 is mainly used to convert the high-speed power output by the first motor 51 into the required low-speed, high-torque power to meet the need for driving the entire support frame to move smoothly.

[0039] When the first motor 51 starts, its output shaft directly drives the second worm gear 71 to rotate. The second worm gear 71 is connected to the second worm wheel 72, transmitting the rotational motion of the motor to the second worm wheel 72. Since the second worm wheel 72 is fixedly mounted on the transmission shaft 73, its rotation drives the transmission shaft 73 to rotate synchronously. The transmission shaft 73 thus acts as a bridge connecting and transmitting power.

[0040] The other end of the drive shaft 73 is fixedly connected to the first worm gear 52. The rotation of the drive shaft 73 will directly drive the first worm gear 52 to rotate together. Thus, the power of the first motor 51 is completely transmitted to the first worm gear 52 through this transmission path, and the first worm gear 52 continues to drive the subsequent mechanism movement.

[0041] The reason for adding a second worm gear 71 and a second worm wheel 72 to the output shaft of the first motor 51, even though the first worm gear 52 and the first worm wheel 53 are already in place, is that the reduction ratio of a single-stage worm gear is limited. If the required extremely low output speed is to be achieved through a single-stage reduction, the size of the first worm wheel 53 may be too large, making it unsuitable for space-sensitive devices such as mobile monitor support frames. Using a two-stage worm gear reduction can avoid the problem of an uncompacted overall structure caused by an excessively large worm wheel in a single-stage reduction mechanism. Furthermore, the worm gear reduces operating noise, making it suitable for high-end office environments.

[0042] like Figure 9 As shown, the transmission reduction mechanism of the second motor 54 is a planetary reducer 8. The planetary reducer 8 is a multi-stage planetary reducer, specifically comprising: a first-stage reduction mechanism, consisting of a first-stage sun gear 87, a first-stage planetary gear 86, a first-stage planetary gear disk 85, and an internal gear ring. The first-stage sun gear 87 is directly connected to the output shaft of the second motor 54 as the power input. The first-stage planetary gear 86 meshes with the first-stage sun gear 87 and simultaneously with the internal gear ring. The first-stage planetary gear 86 is mounted on the first-stage planetary gear disk 85.

[0043] The second-stage reduction mechanism consists of a second-stage sun gear 84, a second-stage planetary gear 83, and an output shaft disk 81. The second-stage sun gear 84 is fixedly connected to the first-stage planetary gear disk 85, thereby receiving power from the first-stage reduction. The second-stage planetary gear 83 meshes with the second-stage sun gear 84 and also meshes with a fixed internal gear ring. The second-stage planetary gear 83 is mounted on the output shaft disk 81 via bearings. The planetary reducer output shaft 82 is fixedly connected to the output shaft disk 81. The power after two-stage reduction is output to the display mounting plate 31 by the planetary reducer output shaft 82.

[0044] The reason for equipping the first motor 51 and the second motor 54 with two different reduction mechanisms, namely the worm gear reducer 7 and the planetary reducer 8, is that the first motor 51 is mainly responsible for the horizontal movement of the support frame. This movement is more subtle, and the worm gear reducer 7 has a significant self-locking advantage in this regard. The second motor 54 is used for pitch adjustment, which has higher requirements for the compactness of the spatial layout, the timeliness of the motion response, and the transmission backlash. Therefore, the planetary reducer 8, which has a more compact structure, higher efficiency, and better rigidity, is selected.

[0045] Furthermore, the second motor 54 in this embodiment is a servo motor. This is because the planetary reducer 8 does not have the function of locking the angle. Setting it as a servo motor makes it easier to control the angle of the display 3. When it rotates to the appropriate position, the motor automatically locks. The first motor 51 can usually be a regular motor because the two-stage worm gear mechanism has already achieved the function of locking the angle.

[0046] Understandably, this differentiated configuration is intended to allow the functions of the two motors to be fully utilized, thereby achieving better display adjustment accuracy.

[0047] In addition, multiple connection holes 32 are provided on the display mounting plate 31 for fitting and fixing different sizes of displays 3.

[0048] Example 3: like Figure 1 , Figure 10 , Figure 11 As shown, in order to achieve better technical results, this utility model proposes a third embodiment based on the first and second embodiments. The difference between the third and second embodiments is that the movable wheel is a retractable movable caster 6.

[0049] Specifically, in this embodiment, the retractable caster 6 is a height-adjustable structure to allow for flexible switching between the moving and fixed states of the support frame. The retractable caster 6 mainly includes a frame 61, multiple telescopic guide rods 65, multiple swivel wheels 64, and a drive mechanism.

[0050] The frame 61 serves as the base for the retractable casters 6, and multiple casters 64 are installed underneath. These casters 64 contact the ground when the frame 61 is lowered, allowing the support frame to move freely. The frame 61 is connected to the supporting chassis 1 via multiple telescopic guide rods 65. One end of each telescopic guide rod 65 is fixedly connected to the supporting chassis 1, and the other end is fixedly connected to the frame 61. These telescopic guide rods 65 not only provide support but also provide precise guidance for the lifting and lowering movement of the frame 61, ensuring its smooth vertical movement and preventing tilting.

[0051] The drive mechanism controls the lifting and lowering of the frame 61. In this embodiment, the drive mechanism includes a servo motor 62 and a lead screw transmission assembly. The servo motor 62 is fixedly mounted on the support chassis 1 and electrically connected to the main control module 2, receiving command signals from the main control module 2. The output shaft of the servo motor 62 is fixedly connected to the lead screw 63, and a lead screw nut 631 with a threaded fit is fitted on the lead screw 63. The lead screw nut 631 is fixed to the frame 61. When the servo motor 62 starts, it drives the lead screw 63 to rotate, which is converted into linear motion of the lead screw nut 631 through threaded transmission, thereby driving the frame 61 to lift and lower along the guide direction of the telescopic guide rod 65.

[0052] In this embodiment, when the main control module 2 issues a descent command, the servo motor 62 drives the lead screw 63 to rotate forward, causing the frame 61 to descend and the caster wheel 64 to contact the ground; conversely, when an ascent command is issued, the servo motor 62 drives the lead screw 63 to rotate in reverse, causing the frame 61 to rise.

[0053] To accommodate the retracted frame 61, a recess 12 is provided on the supporting chassis 1. When the frame 61 is retracted, it retracts entirely into the recess 12, causing the casters 64 to leave the ground and avoid interfering with the fixation of the support frame. When the frame 61 is extended, the casters 64 descend from the recess 12 to contact the ground. This design allows the casters to protrude when the support frame is in motion and to be concealed when it is fixed, maintaining a compact structure.

[0054] In addition, a fixed support leg 11 is provided under the support chassis 1 to provide stable support for the support chassis 1 when the frame 61 is retracted. The bottom end of the fixed support leg 11 is designed so that when the frame 61 is fully retracted, the bottom end of the fixed support leg 11 becomes the lowest point of the support frame, ensuring that the support frame is placed stably on the ground; while when the frame 61 is fully extended, the bottom end of the caster wheel 64 becomes the lowest point, allowing the support frame to move. This layout ensures that the support frame will not slide accidentally when it is fixed, and that the caster wheel 64 is fully grounded when it is in motion.

[0055] It is understandable that the entire workflow of the retractable caster 6 is coordinated by the main control module 2. Users can achieve one-button lifting and lowering through existing technologies, such as buttons or remote control trigger commands. The operation is simple. The guiding function of the telescopic guide rod 65, combined with the screw drive, ensures the accuracy and reliability of the lifting and lowering process, avoiding jamming or shaking.

[0056] Example 4: In order to achieve better technical results, this utility model proposes a fourth embodiment based on the third embodiment. The difference between the fourth and third embodiments is that the fixed support leg 11 is a telescopic fixed support leg.

[0057] Specifically, in this embodiment, the original fixed support leg has been upgraded and designed as an electric telescopic rod that can be precisely controlled by the main control module 2. The top of the telescopic rod is fixedly installed under the supporting chassis 1, while the bottom constitutes a support leg. The electric telescopic rod is electrically connected to the main control module 2, and its telescopic movement is entirely controlled by the commands issued by the main control module 2.

[0058] The movement of the telescopic fixed support leg 11 and the lifting movement of the retractable caster 6 are designed to be coordinated. When the support frame needs to be switched from a fixed state to a mobile state, the main control module 2 first controls the servo motor 62 to operate, driving the frame 61 to descend with the casters 64. After the main control module 2 determines through a preset program that the casters 64 have contacted the ground and begun to bear weight, it then sends a retraction command to the telescopic fixed support legs 11. The electric telescopic rod begins to retract and gradually lifts off the ground, eventually rising to a horizontal position above the bottom of the casters 64. At this point, the entire weight of the support frame is borne by the casters 64, allowing it to move freely.

[0059] Conversely, when it is necessary to switch from the mobile state back to the fixed state, the main control module 2 first controls the servo motor 62 to move, so that the frame 61 begins to rise into the recess 12. At the same time, the main control module 2 also sends an extension command to the telescopic fixed support leg 11, and the bottom end of the electric telescopic rod then extends downward.

[0060] At this point, as the frame 61 is rising, the pressure of the casters 64 on the ground gradually decreases, and the weight of the support frame begins to partially transfer to the telescopic fixed legs 11 that are extending synchronously. This is a dynamic and smooth weight transfer process. As the frame 61 continues to rise and the fixed legs 11 continue to extend, the center of gravity of the support frame gradually shifts from the casters 64 to the fixed legs 11. When the frame 61 is fully retracted into the recess 12 and the casters 64 are completely off the ground, the telescopic fixed legs 11 have also fully extended and are firmly supporting the entire support frame on the ground.

[0061] The reason for this design is that the inventors found in actual production that while simply setting fixed feet with non-adjustable height can provide support, they are prone to collisions and jamming with wires, carpet edges, or other small protrusions on the ground when the monitor is moved, which can even cause the monitor to tip over and cause property damage.

[0062] This intelligent mode, which actively lifts the outriggers when moving and actively supports them when stationary, not only improves the terrain passability of the support frame, but also ensures a seamless connection of support force during state transitions, thereby avoiding instability or swaying that may be caused by sudden changes in the center of gravity.

[0063] The working process of this utility model is as follows: In use, the user issues a command through the main control module 2 to drive the servo motor 62 of the retractable caster 6. Through the transmission of the lead screw 63 and lead screw nut 631, the frame 61 descends along the guide rod 65 until the caster 64 contacts the ground. Subsequently, the telescopic fixed support leg 11 retracts actively, thus achieving smooth movement entirely by relying on the caster 64. When the support frame reaches the target position and needs to be fixed, the main control module 2 controls the frame 61 to rise and retract into the recess 12 of the supporting chassis 1, while simultaneously instructing the telescopic fixed support leg 11 to extend to stably support the weight of the support frame and ensure a stable stop. When adjusting the height in a fixed state, the lifting column 4 acts as the core load-bearing structure to perform lifting and lowering; when making fine angle adjustments, the dual-axis adjustment mechanism 5 located at the top of the lifting column starts to work. The first motor 51 realizes the horizontal rotation of the display through the transmission of the worm gear reducer 7, the first worm 52, and the first worm wheel 53, and uses the self-locking characteristics of the worm wheel and worm to ensure that it does not drift after positioning; while the second motor 54 drives the display to pitch and swing through the compact planetary reducer 8, and finally completes the precise and stable positioning of the display in space.

[0064] like Figure 12 As shown, after use, the lifting column 4 descends and eventually contacts the platform 13 on the supporting chassis 1 to share the load borne by the lifting column 4, thereby enhancing the stability of the overall structure and the reliability of long-term use.

[0065] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A mobile display support frame, comprising a support chassis (1), casters disposed below the support chassis (1), and a main control module (2) disposed on the support chassis (1), characterized in that: It also includes, Display mounting plate (31) is used to fix the display (3); The lifting column (4) includes two relatively vertical columns set on the bearing chassis (1) and a cantilever frame (41) extending laterally at the top. A dual-axis adjustment mechanism (5) is disposed between the two cantilever frames (41) and fixedly connected to the display mounting plate (31); The dual-axis adjustment mechanism (5) includes a first motor (51) and a second motor (54). The output shaft of the first motor (51) is connected to the first worm (52) and the first worm wheel (53) for transmission, thereby driving the display mounting plate (31) to swing horizontally around the vertical axis. The output shaft of the second motor (54) is connected to the display mounting plate (31) for transmission, thereby driving the display mounting plate (31) to pitch and swing around the horizontal axis; The first motor (51), the second motor (54) and the lifting column (4) are all electrically connected to the main control module (2).

2. The movable display support frame according to claim 1, characterized in that: The first motor (51) is also provided with a second worm (71) on its output shaft. The output shaft of the first motor (51) is fixedly connected to the second worm (71). The second worm (71) is connected to the second worm wheel (72) via a transmission. The second worm wheel (72) is fixedly installed on the transmission shaft (73). The transmission shaft (73) is fixedly connected to the first worm (52).

3. The movable display support frame according to claim 1, characterized in that: The second motor (54) is a servo motor, and a planetary reducer (8) is also provided on the output shaft of the servo motor. The output shaft (82) of the planetary reducer is connected to the display mounting plate (31) for transmission.

4. The movable display support frame according to claim 3, characterized in that: The planetary reducer (8) is a multi-stage planetary reducer.

5. The movable display support frame according to claim 1, characterized in that: The movable wheel is a retractable movable caster (6), which includes a frame (61) and multiple telescopic guide rods (65) for supporting the frame (61). Multiple omnidirectional wheels (64) for supporting the frame (61) are provided below the frame (61). One end of the telescopic guide rod (65) is fixedly connected to the bearing chassis (1), and the other end is fixedly connected to the frame (61). The frame (61) is also provided with a drive mechanism for driving the frame (61) to move up and down relative to the bearing chassis (1).

6. The movable display support frame according to claim 5, characterized in that: The drive mechanism includes a servo motor (62) fixedly connected to the support chassis (1) and electrically connected to the main control module (2). The output shaft of the servo motor (62) is fixedly connected to the lead screw (63). The lead screw (63) is fitted with a threaded nut (631) on its outer circumferential surface. The lead screw nut (631) is fixedly connected to the frame (61). The servo motor (62) is configured to drive the lead screw (63) to rotate according to the instructions of the main control module (2), thereby driving the frame (61) to move up and down along the guide direction of the telescopic guide rod (65).

7. The movable display support frame according to claim 6, characterized in that: The supporting chassis (1) has a recess (12) for accommodating the frame (61). When the frame (61) is retracted, the casters (64) leave the ground and when it is extended, the casters (64) contact the ground.

8. The movable display support frame according to claim 7, characterized in that: The support chassis (1) is provided with a fixed support leg (11) for supporting the support chassis (1) when the frame (61) is retracted into the recess (12). When the frame (61) is retracted, the bottom end of the fixed support leg (11) is the lowest point of the support frame; when the frame (61) is fully extended, the bottom end of the caster wheel (64) is the lowest point of the support frame.

9. The movable display support frame according to claim 8, characterized in that: The fixed support (11) is a telescopic fixed support.

10. The movable display support frame according to claim 9, characterized in that: The telescopic fixed support leg is an electric telescopic rod. The electric telescopic rod is electrically connected to the main control module (2) and the telescopic action is controlled by the main control module (2). The telescopic action of the electric telescopic rod is configured as follows: after the frame (61) descends to the point where the caster wheel (64) contacts the ground, the electric telescopic rod begins to retract; when the frame (61) begins to rise towards the recess (12), the telescopic fixed support leg (11) begins to extend.

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