Intelligent lift table

Abstract

This utility model discloses an intelligent height-adjustable desk, comprising: a tabletop, a first leg assembly, a drive assembly, a first transmission assembly, and a control assembly. The first leg assembly includes a receiving box and first legs. The receiving box is installed on the lower side of the tabletop. The first leg includes a first leg and a second leg. The upper end of the first leg is connected to the receiving box, and the lower end of the first leg is retractably disposed in the telescopic groove of the second leg. The drive assembly includes a brushless motor and a magnetic encoder, which are coaxially connected and both are disposed within the receiving box. The first transmission assembly is drively connected to the brushless motor to cause the first leg to extend and retract when the brushless motor rotates. According to this utility model, by incorporating a brushless motor and a magnetic encoder, the operating accuracy of the intelligent height-adjustable desk can be significantly improved, while also ensuring greater stability of the tabletop during height adjustment, resulting in high reliability and stability.

Description

Technical Field

[0001] This utility model relates to the field of office furniture technology, and in particular to an intelligent height-adjustable desk. Background Technology

[0002] With the continuous improvement of office and learning environments, people have placed higher demands on the comfort and functionality of desks and chairs. Smart desks and chairs, as an emerging furniture product, can automatically adjust their height according to user needs, enhancing the user experience. However, existing smart desks and chairs still have many shortcomings in terms of drive systems and control precision. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide an intelligent height-adjustable desk, wherein the intelligent height adjustment is highly reliable and stable.

[0004] The intelligent height-adjustable desk according to an embodiment of the present invention includes: a tabletop; a first table leg assembly, the first table leg assembly including a receiving box and a first table leg, the receiving box being installed on the lower side of the tabletop, the first table leg including a first leg and a second leg, the upper end of the first leg being connected to the receiving box, and the lower end of the first leg being retractably disposed in the telescopic groove of the second leg; a drive assembly, the drive assembly including a brushless motor and a magnetic encoder, the brushless motor and the magnetic encoder being coaxially connected and both being disposed in the receiving box, the magnetic encoder being used to acquire the rotation angle and speed of the brushless motor; a first transmission assembly, the first transmission assembly being disposed between the first leg and the second leg, the first transmission assembly being drively connected to the brushless motor, and being used to cause the first leg to extend and retract when the brushless motor rotates; and a control assembly, the control assembly including a receiver and a controller, the receiver being used to receive instructions, the controller being used to control the operation of the brushless motor according to the instructions, and the controller being used to control the operating state of the brushless motor according to the rotation angle and speed acquired by the magnetic encoder.

[0005] According to the embodiments of the present invention, the intelligent height-adjustable desk can improve the operating accuracy of the desk by setting a brushless motor and a magnetic encoder. It also makes the desk more stable during lifting, with high reliability and good stability. In addition, the first table leg assembly can be pre-assembled as an independent part. The first table leg assembly has a retractable first table leg and a drive component for driving the retraction and extension of the first table leg. After assembly, it can be operated and debugged independently. When connected to the table, it can also reduce the assembly difficulty of the intelligent height-adjustable desk.

[0006] In addition, the intelligent height-adjustable desk according to this utility model may also have the following additional technical features:

[0007] In some embodiments of this utility model, the first transmission component includes a lead screw and an internally threaded tube. The lead screw is disposed on the first leg, and the internally threaded tube is disposed on the second leg. The lead screw is connected to the brushless motor for transmission, so that when the brushless motor rotates, the first leg extends and retracts in the vertical direction through the cooperation of the lead screw and the internally threaded tube.

[0008] In some embodiments of this utility model, the intelligent height-adjustable desk further includes a second transmission assembly, which is connected between the brushless motor and the lead screw. The second transmission assembly includes a first helical gear and a second helical gear meshing with the first helical gear. The first helical gear is coaxially connected to the lead screw, and the second helical gear is coaxially connected to the output shaft of the brushless motor.

[0009] In some embodiments of this utility model, the first table leg assembly further includes a base, which is connected to the lower end of the second leg. In the projection plane perpendicular to the vertical direction, the projection area of ​​the base is larger than the projection area of ​​the second leg.

[0010] In some embodiments of this utility model, one first table leg assembly is provided, and one first table leg assembly is provided in the central area of ​​the tabletop.

[0011] In some embodiments of this utility model, at least one first table leg assembly is provided, and the intelligent lifting table further includes a second table leg assembly, the second table leg assembly including a second table leg, the second table leg including a third leg and a fourth leg, the upper end of the third leg being connected to the tabletop, and the lower end of the third leg being retractably disposed in the telescopic groove of the fourth leg. When multiple first table leg assemblies are provided, each of the receiving boxes is provided with the drive assembly.

[0012] In some embodiments of this utility model, the first table leg assembly is provided in three or more parts, and each of the receiving boxes is provided with the driving assembly.

[0013] In some embodiments of this utility model, the receiver includes at least one of a Bluetooth receiver, a Wi-Fi receiver, an audio receiver, and a touchscreen receiver.

[0014] In some embodiments of this utility model, the container is a cuboid, the length L of the container satisfies: 13cm≤L≤17cm, and the width W of the container satisfies: 8cm≤W≤12cm.

[0015] In some embodiments of this utility model, the intelligent height-adjustable desk also includes a display screen, which is disposed on the desktop of the desk, and the receiver includes a touch screen receiver disposed within the display screen.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a structural schematic diagram of an intelligent height-adjustable table according to an embodiment of the present utility model.

[0019] Figure 2 This is a block diagram of the control system for an intelligent height-adjustable desk according to an embodiment of the present utility model.

[0020] Figure label:

[0021] 100. Intelligent height-adjustable desk; 10. Tabletop; 1. First table leg assembly; 11. Storage box; 12. First table leg; 121. First leg; 122. Second leg; 13. Base; 21. Brushless motor; 22. Magnetic encoder; 31. Lead screw; 4. Second transmission assembly; 51. Display module; 52. Touch screen receiver; 53. Audio receiver. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] The following is for reference. Figures 1-2 Description of an intelligent height-adjustable desk 100 according to an embodiment of the present utility model.

[0026] like Figure 1 As shown, the intelligent height-adjustable desk 100 according to an embodiment of the present invention includes a tabletop 10, a first leg assembly 1, a drive assembly, a first transmission assembly, and a control assembly. The first leg assembly 1 includes a receiving box 11 and a first leg 12. The receiving box 11 is installed on the lower side of the tabletop 10. The first leg 12 includes a first leg 121 and a second leg 122. The upper end of the first leg 121 is connected to the receiving box 11, and the lower end of the first leg 121 is retractably disposed in the telescopic groove of the second leg 122. The drive assembly includes a brushless motor 21 and a magnetic encoder 22. The magnetic encoder 22 is coaxially connected and is housed within the housing 11. The magnetic encoder 22 is used to acquire the rotation angle and speed of the brushless motor 21. The first transmission assembly is located between the first leg 121 and the second leg 122. The first transmission assembly is connected to the brushless motor 21 and is used to extend and retract the first leg 121 when the brushless motor 21 rotates. The control assembly includes a receiver and a controller. The receiver is used to receive instructions, and the controller is used to control the operation of the brushless motor 21 according to the instructions. The controller is also used to control the operating state of the brushless motor 21 according to the rotation angle and speed acquired by the magnetic encoder 22.

[0027] For example, the tabletop 10 can be made of wood, metal, marble, etc., and this application does not impose any restrictions.

[0028] For example, the tabletop 10 can be circular or polygonal, such as triangular, square, pentagonal, etc., and this application does not impose any restrictions.

[0029] refer to Figure 1 In a specific example, a receiving box 11 is installed on the lower surface of the tabletop 10. The installation method can be welding, bonding or screw connection, etc. A first table leg 12 is installed on the lower side of the receiving box 11. The first table leg 12 includes a first leg 121 and a second leg 122. The first leg 121 and the second leg 122 are telescopic. In this example, the tabletop 10 can be a one-piece molded plate, and the lower side of the tabletop 10 may not have a crossbeam or other structure.

[0030] In this example, the drive components include a brushless motor 21 and a magnetic encoder 22. Related technologies often use brushed motors and photoelectric encoders. Brushed motors suffer from carbon brush wear, resulting in a short lifespan and high operating noise, which can negatively impact user experience. While these motors offer high precision, they are prone to losing synchronization at high speeds and consume significant energy. Photoelectric encoders are susceptible to signal interference in dusty or oily environments, leading to decreased feedback accuracy and affecting lifting precision. Therefore, this application uses a brushless motor 21 paired with a coaxially connected magnetic encoder 22. The brushless motor 21 eliminates the carbon brush structure, removing wear risks, extending its lifespan, reducing operating noise, and significantly improving the user experience. Simultaneously, it has low energy consumption and avoids high-speed synchronization issues, ensuring operational stability. The magnetic encoder 22 operates based on the principle of magnetic field induction, exhibiting stronger resistance to environmental interference such as dust and oil, maintaining stable signal feedback even under harsh conditions, and ensuring lifting precision. The coaxial connection of the two components enables precise power output and position feedback, improving the reliability and durability of the drive components and providing strong support for the stable and efficient operation of the equipment.

[0031] Furthermore, the receiving box 11, as part of the first table leg assembly 1, together with the first table leg 12, serves to support the tabletop 10. Therefore, the first table leg assembly 1 can be pre-assembled independently before connecting the receiving box 11 to the tabletop 10, making the assembly of the intelligent lifting table 100 relatively simple and convenient. The brushless motor 21 and magnetic encoder 22 are small in size; after being assembled into the receiving box 11, the receiving box 11 can be designed to be smaller. Thus, the brushless motor 21 and magnetic encoder 22 can also be pre-installed into the receiving box 11, reducing the assembly difficulty of the brushless motor 21 and magnetic encoder 22.

[0032] The brushless motor 21 is connected to the first transmission component. After receiving the command from the receiver, the controller can control the brushless motor 21 to rotate forward or reverse, thereby causing the first transmission component to drive the first leg 121 to rise or fall, and thus causing the table 10 to rise or fall. During the rotation of the brushless motor 21, the magnetic encoder 22 can obtain the size of the table 10 rising or falling based on the rotation angle and speed of the brushless motor 21, so that the size of the table 10 rising or falling is more accurate.

[0033] Therefore, according to the embodiment of the present utility model, the intelligent height-adjustable desk 100, by setting a brushless motor 21 and a magnetic encoder 22, can improve the operating accuracy of the intelligent height-adjustable desk 100, and at the same time make the tabletop 10 more stable when it is raised and lowered, with high reliability and good stability. In addition, the first table leg assembly 1 can be pre-assembled as an independent part. The first table leg assembly 1 has a retractable first table leg 12 and a drive component for driving the retractable movement of the first table leg 12. After assembly, it can be operated and debugged independently. Afterwards, when connected to the tabletop 10, it can also reduce the assembly difficulty of the intelligent height-adjustable desk 100.

[0034] In some embodiments of this utility model, such as Figure 1 As shown, the first transmission assembly includes a lead screw 31 and an internally threaded tube. The lead screw 31 is disposed on the first leg 121, and the internally threaded tube is disposed on the second leg 122. The lead screw 31 is connected to the brushless motor 21 for transmission, so that when the brushless motor 21 rotates, the first leg 121 can extend and retract in the vertical direction through the cooperation of the lead screw 31 and the internally threaded tube.

[0035] In other words, the first transmission component employs a design that combines a lead screw 31 with an internally threaded tube, linked to the brushless motor 21, resulting in stable extension and retraction of the first table leg 12. Specifically, the lead screw 31 is fixed to the first leg 121, and the internally threaded tube is located on the second leg 122. With the help of the rotation of the brushless motor 21, the rotational motion is efficiently converted into the vertical linear motion of the first leg 121. Compared to traditional transmission methods, the threaded transmission of the lead screw 31 and the internally threaded tube has high precision and low friction characteristics, ensuring stable and accurate extension and retraction, effectively preventing swaying or deviation, and providing reliable support for equipment operation. Simultaneously, this transmission structure can achieve a large transmission ratio, allowing the first leg 121 to extend and retract smoothly even at low speeds of the brushless motor 21, meeting the needs of different working conditions. Furthermore, this component has a compact structure and strong load-bearing capacity, capable of withstanding large axial loads and adapting to frequent extension and retraction operations in complex environments. Combined with the long lifespan and low noise advantages of the brushless motor 21, the first transmission component not only extends the overall service life of the equipment but also reduces operating noise and improves the user experience.

[0036] In some embodiments of this utility model, such as Figure 1 As shown, the intelligent height-adjustable desk 100 also includes a second transmission component 4, which is connected between the brushless motor 21 and the lead screw 31. The second transmission component 4 includes a first helical gear and a second helical gear meshing with the first helical gear. The first helical gear is coaxially connected to the lead screw 31, and the second helical gear is coaxially connected to the output shaft of the brushless motor 21.

[0037] In other words, the tooth surface contact of helical gear transmission is line contact, which has a higher degree of overlap compared to spur gears. This effectively reduces impact and vibration during transmission, resulting in smoother and quieter operation, meeting the low-noise requirements of height-adjustable desks. Simultaneously, helical gears can transmit larger torques. When paired with the brushless motor 21, they can efficiently drive the lead screw 31, ensuring stable extension and retraction of the first leg 121, even under heavy loads. Furthermore, the coaxial design of the two helical gears connected to the lead screw 31 and the output shaft of the brushless motor 21 allows for flexible speed regulation. For example, by adjusting the gear ratio of the two helical gears, the speed of the lead screw 31 can be adjusted as needed, achieving precise control of the lifting speed. This enhances the ease of use and intelligence of the intelligent height-adjustable desk 100, providing users with a superior lifting experience.

[0038] In some embodiments of this utility model, such as Figure 1 As shown, the first table leg assembly 1 also includes a base 13, which is connected to the lower end of the second leg 122. In the projection plane perpendicular to the vertical direction, the projected area of ​​the base 13 is larger than the projected area of ​​the second leg 122.

[0039] In other words, within the vertical projection plane, the larger base 13 area expands the support range, effectively distributing the torque generated by the load and reducing the risk of swaying or tipping due to a shift in the center of gravity, ensuring the table maintains a stable posture. Furthermore, the difference in vertical dimensions between the base 13 and the second leg 122 forms a stepped structure, which not only enhances visual stability but also provides greater flexibility in adapting to different surfaces during installation. Even on slightly uneven ground, the larger base 13 can maintain balance through multi-point contact, improving safety and reliability and creating a more stable office or usage environment for users.

[0040] In some embodiments of this utility model, a first table leg assembly 1 is provided, and a first table leg assembly 1 is provided in the central area of ​​the tabletop 10.

[0041] In other words, with the center of the tabletop 10 serving as the force balance point, a single table leg assembly can directly bear and evenly distribute the pressure from all directions of the tabletop 10, avoiding the uneven force distribution problem that may occur in traditional multi-leg layouts, simplifying the structure and reducing costs. Furthermore, the central positioning reduces the space occupied by the first table leg assembly 1 under the tabletop 10, providing users with more freedom of leg movement, especially suitable for small apartments or spaces with limited capacity. Moreover, this layout, combined with the transmission structure of the lead screw 31 and brushless motor 21, can precisely control the lifting and lowering of the tabletop 10, ensuring that the tabletop 10 remains level during lifting and lowering, avoiding tilting and wobbling, balancing practicality and stability, and providing users with a convenient and comfortable user experience.

[0042] In some embodiments of this utility model, at least one first table leg assembly 1 is provided, and the intelligent lifting table 100 also includes a second table leg assembly. The second table leg assembly includes a second table leg, which includes a third leg and a fourth leg. The upper end of the third leg is connected to the tabletop 10, and the lower end of the third leg is telescopically disposed in the telescopic groove of the fourth leg. When multiple first table leg assemblies 1 are provided, each receiving box 11 is provided with a drive assembly.

[0043] In other words, single or multiple first table leg components 1, combined with drive components, can provide centralized or distributed power support according to actual needs. Especially when multiple first table leg components 1 are used, each drive component operates independently, evenly distributing the load on the tabletop 10, avoiding excessive stress on a single point, and enhancing lifting stability. The retractable structure of the third leg in the second table leg component, located within the telescopic groove of the fourth leg, complements the lead screw 31 transmission of the first table leg component 1. This ensures the synchronicity of tabletop 10 lifting and lowering, while expanding the support range through the multi-leg layout, reducing the risk of tilting. This combined layout can also flexibly adapt to different tabletop 10 sizes and load-bearing requirements. The structure is more stable with multi-leg support, while retaining the openness of the space under the table, balancing practicality and space utilization, and providing users with a more reliable lifting experience.

[0044] In some embodiments of this utility model, the first table leg assembly 1 is provided in three or more parts, and each receiving box 11 is provided with a drive assembly.

[0045] In other words, multiple first table leg components 1 are evenly distributed under the tabletop 10, forming a more stable support matrix and significantly improving the overall load-bearing capacity. Even if the load distribution on the tabletop 10 is uneven, the forces can be balanced through the coordinated operation of multiple drive components, preventing the tabletop 10 from tilting or experiencing localized overload. Each drive component is independently controlled, and through synchronous control technology, precise linkage of multiple legs can be achieved, ensuring that the tabletop 10 remains horizontal during lifting and lowering, which is especially suitable for large-sized tabletops 10 or heavy equipment mounting scenarios. In addition, the multi-drive layout has redundancy characteristics; when one component fails, the remaining drives can still maintain basic lifting and lowering functions, improving system reliability. This design can also flexibly adjust the position of the table legs according to the shape of the tabletop 10, adapting to irregularly shaped desktops or special installation requirements, enhancing structural stability while providing users with a more flexible and reliable lifting and lowering experience.

[0046] In some embodiments of this utility model, the receiver includes at least one of a Bluetooth receiver, a Wi-Fi receiver, an audio receiver 53, and a touchscreen receiver 52.

[0047] In other words, the receiver can integrate multiple types such as Bluetooth, Wi-Fi, audio, and touchscreen, building a comprehensive and multi-dimensional interactive system for the Smart Height Adjustable Desk 100, which can greatly enhance the product's functionality and user experience. The Bluetooth receiver can quickly pair with devices such as mobile phones and tablets, allowing users to conveniently control the height of the Smart Height Adjustable Desk 100 and set memory settings through a mobile APP; the Wi-Fi receiver breaks distance limitations, supporting remote control and cloud data synchronization, allowing users to preset the height of the desk 100 even when they are away from home. The audio receiver 53, combined with voice recognition technology, allows users to complete the height adjustment operation simply by speaking commands, completely freeing their hands, especially suitable for scenarios where hands are busy or vision is limited; the touchscreen receiver 52 provides an intuitive visual interactive interface, achieving precise height adjustment through touch operations such as clicking and swiping, with a simple and easy-to-understand operation process.

[0048] The diverse combinations of these receivers not only cater to the operating habits of different user groups but also allow for flexible switching of control methods based on usage scenarios. For example, in a quiet office environment, users can choose voice control; in a noisy place, they can switch to touchscreen operation. This flexibility allows the Smart Height Adjustable Desk 100 to perform optimally in various environments, significantly enhancing the product's practicality and intelligence.

[0049] In some embodiments of this utility model, the container 11 is a cuboid, and the length L of the container 11 satisfies: 13cm≤L≤17cm, and the width W of the container 11 satisfies: 8cm≤W≤12cm.

[0050] Exemplarily, the length L of the accommodation box 11 can be: 13 cm, 13.5 cm, 14 cm, 14.5 cm, 15 cm, 15.5 cm, 16 cm, 16.5 cm, 17 cm.

[0051] Exemplarily, the width W of the accommodation box 11 can be: 8 cm, 8.5 cm, 9 cm, 9.5 cm, 10 cm, 10.5 cm, 11 cm, 11.5 cm, 12 cm.

[0052] By meeting the above dimensions, not only can the drive components be compactly stored to avoid space waste, but also reasonable wiring and heat dissipation space can be reserved to ensure the stable operation of internal components.

[0053] In some embodiments of the present invention, the intelligent lifting table 100 further includes a display screen, the display screen is arranged on the tabletop of the table board 10, and the receiver includes a touch screen receiver 52 arranged in the display screen.

[0054] Exemplarily, the display screen can display data such as the height of the table board 10 and the working duration in real time. Combined with the touch screen receiver 52, users can accurately adjust the height, set functions such as sedentary reminders, etc. through touch operations, and the visual interaction is intuitive and convenient. This integrated design combines the control interface with the used desktop, can shorten the operation path, and improve the use efficiency.

[0055] Reference Figure 2 Shown in a specific example, the control system of the intelligent lifting table 100, the core of the system is the MCU (Microcontroller Unit). The WiFi module realizes network connection and supports remote or intelligent linkage control; the touch control and voice control module receives instructions through the MCU, allowing users to perform touch or voice operations. The magnetic encoder 22 feeds back the position information of the brushless motor 21 to assist the MCU in precisely regulating the motor, and the PWM signal drives the motor to realize the lifting of the table legs. The display module 51 then presents data such as the system status and height in real time. Each part cooperates to enable the lifting table to have the capabilities of intelligent, precise, and convenient control and status feedback, improving the use experience.

[0056] Other components and operations of the intelligent lifting table 100 according to the embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0057] In the description of this specification, references to terms such as "some embodiments," "optionally," "furthermore," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A smart height-adjustable desk (100), characterized in that, include: Tabletop (10); The first table leg assembly (1) includes a receiving box (11) and a first table leg (12). The receiving box (11) is installed on the lower side of the tabletop (10). The first table leg (12) includes a first leg (121) and a second leg (122). The upper end of the first leg (121) is connected to the receiving box (11), and the lower end of the first leg (121) is telescopically disposed in the telescopic groove of the second leg (122). The drive assembly includes a brushless motor (21) and a magnetic encoder (22). The brushless motor (21) and the magnetic encoder (22) are coaxially connected and are both located in the housing (11). The magnetic encoder (22) is used to obtain the rotation angle and speed of the brushless motor (21). The first transmission component is disposed between the first leg (121) and the second leg (122). The first transmission component is connected to the brushless motor (21) for extending and retracting the first leg (121) when the brushless motor (21) rotates. The control component includes a receiver and a controller. The receiver is used to receive instructions, and the controller is used to control the operation of the brushless motor (21) according to the instructions. The controller is also used to control the operating state of the brushless motor (21) according to the rotation angle and speed obtained by the magnetic encoder (22).

2. The intelligent height-adjustable desk (100) according to claim 1, characterized in that, The first transmission assembly includes a lead screw (31) and an internally threaded tube. The lead screw (31) is disposed on the first leg (121), and the internally threaded tube is disposed on the second leg (122). The lead screw (31) is connected to the brushless motor (21) for transmission, so that when the brushless motor (21) rotates, the first leg (121) extends and retracts in the vertical direction through the cooperation of the lead screw (31) and the internally threaded tube.

3. The intelligent height-adjustable desk (100) according to claim 2, characterized in that, It also includes a second transmission assembly (4), which is connected between the brushless motor (21) and the lead screw (31). The second transmission assembly (4) includes a first helical gear and a second helical gear meshing with the first helical gear. The first helical gear is coaxially connected to the lead screw (31), and the second helical gear is coaxially connected to the output shaft of the brushless motor (21).

4. The intelligent height-adjustable desk (100) according to claim 1, characterized in that, The first table leg assembly (1) also includes a base (13), which is connected to the lower end of the second leg (122). In the projection plane perpendicular to the up and down direction, the projection area of ​​the base (13) is greater than the projection area of ​​the second leg (122).

5. The intelligent height-adjustable desk (100) according to claim 1, characterized in that, The first table leg assembly (1) is provided, and one of the first table leg assemblies (1) is located in the central area of ​​the tabletop (10).

6. The intelligent height-adjustable desk (100) according to claim 1, characterized in that, The first table leg assembly (1) is provided at least one, and the intelligent lifting table (100) also includes a second table leg assembly. The second table leg assembly includes a second table leg, and the second table leg includes a third leg and a fourth leg. The upper end of the third leg is connected to the table board (10), and the lower end of the third leg is telescopically disposed in the telescopic groove of the fourth leg. When multiple first table leg assemblies (1) are provided, each of the receiving boxes (11) is provided with the drive assembly.

7. The intelligent height-adjustable desk (100) according to claim 1, characterized in that, The first table leg assembly (1) is provided in three or more parts, and each of the receiving boxes (11) is provided with the drive assembly.

8. The intelligent height-adjustable desk (100) according to claim 1, characterized in that, The receiver includes at least one of a Bluetooth receiver, a Wi-Fi receiver, an audio receiver (53), and a touchscreen receiver (52).

9. The intelligent height-adjustable desk (100) according to claim 1, characterized in that, The container (11) is a cuboid. The length L of the container (11) satisfies: 13cm≤L≤17cm, and the width W of the container (11) satisfies: 8cm≤W≤12cm.

10. The intelligent height-adjustable desk (100) according to claim 1, characterized in that, It also includes a display screen disposed on the desktop of the tabletop (10), and the receiver includes a touch screen receiver disposed within the display screen.

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