A lifting table

Abstract

This utility model discloses a height-adjustable desk, relating to the field of height-adjustable desk technology. It includes a main structure comprising a frame, with a desktop provided at the top of the inner cavity of the frame and slidably connected to the inner wall of the frame. A liner is fixedly connected to the bottom of the frame, and table legs are fixedly connected to all four sides of the bottom of the frame. A splicing assembly includes cover plates disposed around the top of the frame, with connectors at the bottom of the cover plates. Through the cooperation of magnetic strips and magnetic blocks in the splicing assembly, the side shelves can be quickly installed and removed, thus solving the problems of difficult disassembly and space occupation caused by the traditional fixed side shelves. Users can flexibly add or remove shelves, thereby improving space utilization. The height-adjustable assembly, through the cooperation of a rotating handle, bevel gear transmission, lead screw, and adjusting rod, allows for flexible adjustment of the desktop height, thereby meeting the needs of users of different heights, avoiding physical fatigue caused by height discomfort, and thus improving user comfort.

Description

Technical Field

[0001] This utility model relates to the field of height-adjustable desks, and in particular to a height-adjustable desk. Background Technology

[0002] In daily work and study, tables are commonly used furniture, and their structural design directly affects the user experience and space utilization. In the current technology, the tabletop of traditional tables is mostly a one-piece structure with a single function, which can only meet basic placement needs. In order to improve storage capacity, some tables expand storage space by adding panels on the side (i.e., side shelves) to store books, documents, small items, etc., thereby improving space utilization efficiency. This is more common in study rooms, offices and other scenarios.

[0003] However, such tables with side shelves have obvious drawbacks: the side shelves are mostly fixed to the table body, making them difficult to disassemble. When users do not need storage or need to move the table, the shelves become a burden and cause inconvenience. At the same time, the tabletop height of existing tables is generally fixed, making it inconvenient to adjust according to the user's height, usage habits, etc., and it is difficult to meet diverse usage needs. Utility Model Content

[0004] In view of the problems existing in the above and / or existing height-adjustable desks, this utility model is proposed.

[0005] Therefore, the problem to be solved by this utility model is how to solve the problem of inconvenient disassembly of the side-mounted shelf and inconvenient adjustment of the desktop height.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a height-adjustable desk, comprising,

[0007] The main structure includes a frame, a tabletop is provided at the top of the inner cavity of the frame and is slidably connected to the inner wall of the frame, a liner is fixedly connected to the bottom of the frame, and table legs are fixedly connected to all four sides of the bottom of the frame; and...

[0008] The splicing assembly includes cover plates disposed around the top of the frame, with connectors at the bottom of the cover plates and side-mounted shelves on the surface of the connectors;

[0009] The lifting assembly includes a rotating handle rotatably connected to one side of the frame, and an adjustment component is provided at the bottom of the desktop, which cooperates with the rotating handle.

[0010] In a preferred embodiment of the height-adjustable table of this utility model, the connecting member includes a magnetic strip fixedly connected to the bottom of the cover plate, the bottom of the magnetic strip being fixedly connected to the frame, and a magnetic block being fixedly connected to the side of the side shelf near the magnetic strip, which cooperates with the magnetic strip.

[0011] In a preferred embodiment of the height-adjustable table of this utility model, the connecting member includes a fixed frame that is slidably connected to the top of the frame, and the fixed frame has an embedding groove on both sides. An embedding block is fixedly connected to the surface of the side shelf and cooperates with the embedding groove.

[0012] In a preferred embodiment of the height-adjustable table of this utility model, the bottom of the embedding groove is provided with a receiving groove, the inner cavity of the receiving groove is slidably connected with a bending plate, one side of the bending plate is fixedly connected with a locking block, and the bottom of the embedding block is provided with a locking groove that cooperates with the locking block.

[0013] In a preferred embodiment of the height-adjustable table of this utility model, a slider is fixedly connected to the surface of the bending plate, and a groove is provided on one side of the embedded groove, which cooperates with the slider.

[0014] In a preferred embodiment of the height-adjustable table of this utility model, a spring is fixedly connected to the bottom of the slider, and the bottom of the spring is fixedly connected to the bottom of the embedded groove.

[0015] In a preferred embodiment of the height-adjustable table of this utility model, the top of the cover plate is provided with a through groove, the top of the bent plate passes through the fixing frame and the through groove, and is fixedly connected with a pressure plate.

[0016] In a preferred embodiment of the height-adjustable table of this utility model, the adjusting component includes a first rotating shaft rotatably connected to one side of a rotating handle, one side of the first rotating shaft passing through the frame and fixedly connected to a first bevel gear, one side of the first bevel gear meshing with a second bevel gear, one side of the second bevel gear meshing with a third bevel gear, one side of the third bevel gear fixedly connected to a second rotating shaft, one side of the second rotating shaft meshing with a fourth bevel gear, and one side of the fourth bevel gear meshing with a fifth bevel gear.

[0017] In a preferred embodiment of the height-adjustable table of this utility model, the inner cavities of the second bevel gear and the fifth bevel gear are both fixedly connected with extended threaded sleeves, and both sides of the extended threaded sleeves are threaded with lead screws. A movable plate is fixedly connected to the side of the lead screw away from the extended threaded sleeve, and a movable block is fixedly connected to the side of the movable plate away from the lead screw. An adjusting rod is hinged to the side of the movable block away from the movable plate, and the top of the adjusting rod is hinged to the tabletop.

[0018] In a preferred embodiment of the height-adjustable table of this utility model, a support rod is hinged to the surface of the adjusting rod, and the bottom of the support rod is hinged to the liner.

[0019] In a preferred embodiment of the height-adjustable table of this utility model, the bottom of the adjusting rod is slidably connected to a base, and the bottom of the base is fixedly connected to a liner.

[0020] The beneficial effects of this utility model are as follows: the cooperation of magnetic strips and magnetic blocks in the splicing components enables quick loading and unloading of side shelves, thereby solving the problems of difficult disassembly and space occupation caused by the traditional fixed side shelves. Users can flexibly add or remove shelves, thereby improving space utilization. The lifting component, through the cooperation of rotating handle, bevel gear transmission, lead screw and adjusting rod, enables flexible adjustment of desktop height, thereby meeting the needs of users of different heights, avoiding physical fatigue caused by height discomfort, and thus improving user comfort. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0022] Figure 1 This is a structural diagram of an adjustable desk.

[0023] Figure 2 This is a partial structural diagram of an adjustable desk.

[0024] Figure 3 This is a structural diagram of the lifting component of the height-adjustable desk.

[0025] Figure 4 For height-adjustable desks Figure 3 Enlarged view of region A in the middle.

[0026] Figure 5 For height-adjustable desks Figure 3 Enlarged view of region B in the middle.

[0027] Figure 6 This is a partial structural diagram of the connecting parts of the height-adjustable desk.

[0028] Figure 7 This is a sectional view of the fixed frame of the height-adjustable desk.

[0029] Figure 8 This is a diagram of the through-slot structure of the height-adjustable table.

[0030] In the diagram: 1. Main structure; 11. Frame; 12. Tabletop; 13. Liner; 14. Table legs; 2. Assembly components; 21. Cover plate; 22. Connector; 23. Side shelf; 3. Lifting assembly; 31. Rotating handle; 32. Adjusting component; 22-01. Magnetic strip; 22-1. Fixing frame; 22-2. Embedded groove; 22-3. Embedded block; 22-4. Receiving groove; 22-5. Bending plate; 22-6. Locking block; 22-7. Sliding block; 22-8. Slide; 22- 9. Spring; 22-10. Through groove; 22-11. Pressure plate; 32-1. First rotating shaft; 32-2. First bevel gear; 32-3. Second bevel gear; 32-4. Third bevel gear; 32-5. Second rotating shaft; 32-6. Fourth bevel gear; 32-7. Fifth bevel gear; 32-8. Extended threaded sleeve; 32-9. Lead screw; 32-10. Movable plate; 32-11. Movable block; 32-12. Adjusting rod; 32-13. Support rod; 32-14. Base. Detailed Implementation

[0031] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0034] Example 1

[0035] Reference Figures 1-8 This is the first embodiment of the present invention, which provides a height-adjustable table, including...

[0036] The main structure 1 includes a frame 11, a tabletop 12 provided at the top of the inner cavity of the frame 11 and slidably connected to the inner wall of the frame 11, a liner 13 fixedly connected to the bottom of the frame 11, and table legs 14 fixedly connected to all four sides of the bottom of the frame 11; and...

[0037] The splicing component 2 includes a cover plate 21 disposed around the top of the frame 11, a connector 22 disposed at the bottom of the cover plate 21, and a side shelf 23 disposed on the surface of the connector 22.

[0038] The lifting assembly 3 includes a rotating handle 31 rotatably connected to one side of the frame 11, and an adjusting component 32 is provided at the bottom of the desktop 12, which cooperates with the rotating handle 31.

[0039] In the main structure 1, the frame 11 provides installation support for the desktop 12 and various components. The desktop 12 is slidably connected to the inner wall of the frame 11, making it possible to raise and lower. The liner 13 enhances the stability of the bottom, and the table legs 14 support the entire table. The splicing component 2, through the cooperation of the cover plate 21, the connector 22 and the side shelf 23, enables the flexible installation and removal of the side shelf 23, thereby solving the problems of difficult disassembly and space occupation caused by the traditional fixed side shelf 23. In the lifting component 3, the rotating handle 31, together with the adjusting component 32, enables the height adjustment of the desktop 12, thereby meeting the needs of users of different heights. The three components work together to retain the storage function and overcome the shortcomings of existing tables, thus providing users with a convenient and flexible user experience.

[0040] From a structural perspective, each side shelf 23 is fixedly connected to a magnetic block on the side closest to the frame 11, which can form a stable magnetic attraction with the magnetic strip 22-01. This design allows multiple side shelves 23 of different sizes to be installed and removed independently and quickly without the need for any tools, making the operation convenient and efficient.

[0041] In terms of functionality, the side shelves 23, categorized by size, can be used to store different items: larger side shelves 23 can be used to store larger items such as books and folders, while smaller ones are suitable for storing stationery, small ornaments, and other small items. Users can flexibly choose the required size and number of side shelves 23 to combine and install according to their actual storage needs, thereby achieving the classification, organization, and orderly storage of items, avoiding the clutter problems of traditional desktop or single-shelf storage.

[0042] Example 2

[0043] Reference Figures 1-5 This is the second embodiment of the present invention, which is based on the previous embodiment. Specifically, the connector 22 includes a magnetic strip 22-01 fixedly connected to the bottom of the cover plate 21. The bottom of the magnetic strip 22-01 is fixedly connected to the frame 11. A magnetic block is fixedly connected to the side of the side shelf 23 near the magnetic strip 22-01 and cooperates with the magnetic strip 22-01.

[0044] The magnetic block on one side of the side shelf 23 and the magnetic strip 22-01 magnetically engage, allowing for installation and removal without tools. As a result, users can flexibly add or remove the side shelf 23 according to their needs, avoiding the space occupation when not in use, thus effectively solving the problem of difficult disassembly of traditional side shelves.

[0045] Specifically, the adjusting component 32 includes a first rotating shaft 32-1 rotatably connected to one side of the rotating handle 31. One side of the first rotating shaft 32-1 passes through the frame 11 and is fixedly connected to a first bevel gear 32-2. One side of the first bevel gear 32-2 meshes with a second bevel gear 32-3. One side of the second bevel gear 32-3 meshes with a third bevel gear 32-4. One side of the third bevel gear 32-4 is fixedly connected to a second rotating shaft 32-5. One side of the second rotating shaft 32-5 meshes with a fourth bevel gear 32-6. One side of the fourth bevel gear 32-6 meshes with a fifth bevel gear 32-7.

[0046] The rotational motion of the rotating handle 31 is transmitted to the first bevel gear 32-2 via the first rotating shaft 32-1. The force is redirected by meshing with the second bevel gear 32-3. The force is then transmitted sequentially through the third bevel gear 32-4, the second rotating shaft 32-5, the fourth bevel gear 32-6, and the fifth bevel gear 32-7 to form a complete power chain. This provides stable power for the lifting and lowering of the desktop 12, thereby ensuring the effective transmission and redirection of force.

[0047] Specifically, the inner cavities of the second bevel gear 32-3 and the fifth bevel gear 32-7 are both fixedly connected with extended threaded sleeves 32-8. Both sides of the extended threaded sleeves 32-8 are threadedly connected with lead screws 32-9. The side of the lead screw 32-9 away from the extended threaded sleeves 32-8 is fixedly connected with a movable plate 32-10. The side of the movable plate 32-10 away from the lead screw 32-9 is fixedly connected with a movable block 32-11. The side of the movable block 32-11 away from the movable plate 32-10 is hinged with an adjusting rod 32-12. The top of the adjusting rod 32-12 is hinged to the tabletop 12.

[0048] The extended threaded sleeve 32-8 rotates with the second bevel gear 32-3 and the fifth bevel gear 32-7. Through cooperation with the lead screw 32-9, the rotational motion is converted into horizontal linear motion, which in turn drives the movable plate 32-10 and the movable block 32-11 to move, pushing the adjusting rod 32-12 to convert the horizontal force into vertical lift, thereby realizing the height adjustment of the desktop 12.

[0049] It should be noted that the surfaces of the extended threaded sleeve 32-8 and the second rotating shaft 32-5 are rotatably connected to bearing seats, and the bearing seats are fixedly connected to the liner 13, which can support the extended threaded sleeve 32-8 and the second rotating shaft 32-5.

[0050] It should be noted that the bottom of the movable plate 32-10 is provided with a limiting block, and the top of the liner plate 13 is provided with a limiting groove. By sliding the limiting block in the limiting groove, the movement of the movable plate 32-10 can be limited and supported.

[0051] Specifically, a support rod 32-13 is hinged to the surface of the adjusting rod 32-12, and the bottom of the support rod 32-13 is hinged to the liner plate 13.

[0052] The support rod 32-13 is hinged to the adjusting rod 32-12 and the liner 13 at both ends. During the lifting process, it swings with the adjusting rod 32-12 to form a triangular support, thereby distributing the weight of the tabletop 12 and the items, preventing the adjusting rod 32-12 from deforming, and thus ensuring smooth lifting without shaking.

[0053] Specifically, the bottom of the adjusting rod 32-12 is slidably connected to the base 32-14, and the bottom of the base 32-14 is fixedly connected to the liner 13.

[0054] The base 32-14 is fixed to the liner 13, which restricts the movement trajectory of the adjusting rod 32-12 and prevents it from deviating or tilting. This ensures the moving accuracy of the lead screw 32-9 and the stability of the movable block 32-11, making the transmission of each component coordinated. This ensures that the tabletop 12 is raised and lowered accurately and reliably.

[0055] Working principle: When installing the side shelf 23, the magnetic attraction between the magnetic strip 22-01 in the connector 22 and the magnetic block on the side shelf 23 is used to fix the side shelf 23 under the cover plate 21, so as to achieve quick installation for storing items; when not in use, it can be directly removed, which is convenient to operate and solves the problem of difficult disassembly of traditional shelves.

[0056] When adjusting the height of the desktop 12, rotate the rotating handle 31 of the lifting assembly 3. The rotating handle 31 drives the first rotating shaft 32-1 to rotate, and the first bevel gear 32-2 rotates with it and meshes with the second bevel gear 32-3, driving the second bevel gear 32-3 to rotate. At the same time, the second bevel gear 32-3 drives the third bevel gear 32-4 to rotate. The third bevel gear 32-4 drives the fourth bevel gear 32-6 to rotate through the second rotating shaft 32-5. The fourth bevel gear 32-6 meshes with the fifth bevel gear 32-7, causing the fifth bevel gear 32-7 to rotate synchronously, thereby completing the power transmission and steering.

[0057] Subsequently, the extended threaded sleeves 32-8 inside the second bevel gear 32-3 and the fifth bevel gear 32-7 rotate with them, driving the lead screws 32-9 on both sides to move axially. Then, the lead screws 32-9 drive the movable plate 32-10 and the movable block 32-11 to move. The movable block 32-11 pushes the bottom of the adjusting rod 32-12 to slide within the base 32-14. Then, under the action of the adjusting rod 32-12, the support rod 32-13 will swing around the hinge point with the liner 13 and support the adjusting rod 32-12, thereby causing the adjusting rod 32-12 to swing around the hinge point with the movable block 32-11. This pushes the desktop 12 to slide up and down along the inner wall of the frame 11, realizing the height adjustment of the desktop 12, thus meeting the needs of users of different heights.

[0058] Example 3

[0059] Reference Figures 6-8 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0060] Specifically, the connector 22 includes a fixed frame 22-1 that is slidably connected to the top of the frame 11. The fixed frame 22-1 has an embedding groove 22-2 on both sides. An embedding block 22-3 is fixedly connected to the surface of the side shelf 23 and cooperates with the embedding groove 22-2.

[0061] The fixed frame 22-1 is slidably connected to the top of the frame 11, which can drive the side shelf 23 to move with it, making it convenient to adjust the position of the side shelf 23 according to the usage requirements; the embedded groove 22-2 cooperates with the embedded block 22-3 on the surface of the side shelf 23 to provide initial installation positioning for the side shelf 23, replacing the traditional fixed connection method, thus laying the foundation for subsequent quick installation and removal, and solving the problem of difficult disassembly of the side shelf 23.

[0062] Specifically, the bottom of the embedding groove 22-2 is provided with a receiving groove 22-4, the inner cavity of the receiving groove 22-4 is slidably connected with a bending plate 22-5, a locking block 22-6 is fixedly connected to one side of the bending plate 22-5, and the bottom of the embedding block 22-3 is provided with a locking groove, which cooperates with the locking block 22-6.

[0063] The receiving slot 22-4 provides space for the bent plate 22-5 and the locking block 22-6. When the embedded block 22-3 enters the embedding slot 22-2, the locking block 22-6 cooperates with the locking groove at the bottom of the embedded block 22-3 to firmly fix the embedded block 22-3, preventing the side shelf 23 from loosening or falling off during use, thus ensuring the stability of the storage process. At the same time, this locking structure also provides a convenient way for subsequent disassembly.

[0064] Specifically, a slider 22-7 is fixedly connected to the surface of the bent plate 22-5, and a groove 22-8 is provided on one side of the embedded groove 22-2, which cooperates with the slider 22-7.

[0065] The slider 22-7 is fixed on the surface of the bending plate 22-5, and the groove 22-8 is opened on one side of the embedded groove 22-2. The sliding cooperation between the two can limit the movement trajectory of the bending plate 22-5 and prevent it from shifting or tilting during movement, thereby ensuring that the card block 22-6 can accurately dock or separate from the card groove and ensure the stable operation of the connector 22.

[0066] Specifically, a spring 22-9 is fixedly connected to the bottom of the slider 22-7, and the bottom of the spring 22-9 is fixedly connected to the bottom of the embedded groove 22-2.

[0067] When the embedded block 22-3 presses against the locking block 22-6, causing the bending plate 22-5 to move downward, the spring 22-9 is compressed. When the slot moves to the top of the locking block 22-6, the elastic force of the spring 22-9 drives the bending plate 22-5 and the locking block 22-6 to reset, so that the locking block 22-6 automatically locks into the slot, thereby achieving rapid fixation of the side-mounted shelf 23 without additional operation, thus improving installation efficiency.

[0068] Specifically, the top of the cover plate 21 is provided with a through groove 22-10, the top of the bent plate 22-5 passes through the fixing frame 22-1 and the through groove 22-10, and is fixedly connected with a pressure plate 22-11.

[0069] The through slot 22-10 provides space for the movement of the bending plate 22-5, avoiding interference with the cover plate 21; the pressure plate 22-11 is fixed to the top of the bending plate 22-5. The user can move the bending plate 22-5 and the locking block 22-6 by moving the pressure plate 22-11 down, so that the locking block 22-6 can be disengaged from the slot, thereby easily completing the disassembly of the side shelf 23 and solving the problem of difficult disassembly of the traditional side shelf 23.

[0070] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A height-adjustable desk, characterized in that: include, The main structure (1) includes a frame (11), a tabletop (12) is provided at the top of the inner cavity of the frame (11) and is slidably connected to the inner wall of the frame (11), a liner (13) is fixedly connected to the bottom of the frame (11), and table legs (14) are fixedly connected to all four sides of the bottom of the frame (11); and, The splicing component (2) includes a cover plate (21) disposed around the top of the frame (11), a connector (22) is disposed at the bottom of the cover plate (21), and a side shelf (23) is disposed on the surface of the connector (22). The lifting assembly (3) includes a rotating handle (31) rotatably connected to one side of the frame (11), and an adjusting component (32) is provided at the bottom of the desktop (12) and cooperates with the rotating handle (31).

2. The height-adjustable desk as described in claim 1, characterized in that: The connector (22) includes a magnetic strip (22-01) fixedly connected to the bottom of the cover plate (21). The bottom of the magnetic strip (22-01) is fixedly connected to the frame (11). A magnetic block is fixedly connected to the side of the side plate (23) near the magnetic strip (22-01) and cooperates with the magnetic strip (22-01).

3. The height-adjustable desk as described in claim 1, characterized in that: The connector (22) includes a fixed frame (22-1) that is slidably connected to the top of the frame (11). The fixed frame (22-1) has an embedding groove (22-2) on both sides. The side shelf (23) has an embedding block (22-3) fixedly connected to its surface and cooperates with the embedding groove (22-2).

4. The height-adjustable desk as described in claim 3, characterized in that: The bottom of the embedding groove (22-2) is provided with a receiving groove (22-4), and a bending plate (22-5) is slidably connected to the inner cavity of the receiving groove (22-4). A locking block (22-6) is fixedly connected to one side of the bending plate (22-5). The bottom of the embedding block (22-3) is provided with a locking groove, which cooperates with the locking block (22-6).

5. The height-adjustable desk as described in claim 4, characterized in that: A slider (22-7) is fixedly connected to the surface of the bending plate (22-5), and a groove (22-8) is provided on one side of the embedded groove (22-2), which cooperates with the slider (22-7).

6. The height-adjustable desk as described in claim 5, characterized in that: A spring (22-9) is fixedly connected to the bottom of the slider (22-7), and the bottom of the spring (22-9) is fixedly connected to the bottom of the embedded groove (22-2).

7. The height-adjustable desk as described in claim 5, characterized in that: The top of the cover plate (21) is provided with a through groove (22-10), and the top of the bent plate (22-5) passes through the fixing frame (22-1) and the through groove (22-10), and is fixedly connected with a pressure plate (22-11).

8. The height-adjustable desk as described in claim 1, characterized in that: The adjusting component (32) includes a first rotating shaft (32-1) rotatably connected to one side of the rotating handle (31). One side of the first rotating shaft (32-1) passes through the frame (11) and is fixedly connected to a first bevel gear (32-2). One side of the first bevel gear (32-2) meshes with a second bevel gear (32-3). One side of the second bevel gear (32-3) meshes with a third bevel gear (32-4). One side of the third bevel gear (32-4) is fixedly connected to a second rotating shaft (32-5). One side of the second rotating shaft (32-5) meshes with a fourth bevel gear (32-6). One side of the fourth bevel gear (32-6) meshes with a fifth bevel gear (32-7).

9. The height-adjustable desk as described in claim 8, characterized in that: The inner cavities of the second bevel gear (32-3) and the fifth bevel gear (32-7) are both fixedly connected with extended threaded sleeves (32-8). Both sides of the extended threaded sleeves (32-8) are threadedly connected with lead screws (32-9). A movable plate (32-10) is fixedly connected to the side of the lead screws (32-9) away from the extended threaded sleeves (32-8). A movable block (32-11) is fixedly connected to the side of the movable plate (32-10) away from the lead screws (32-9). An adjusting rod (32-12) is hinged to the side of the movable block (32-11) away from the movable plate (32-10). The top of the adjusting rod (32-12) is hinged to the tabletop (12).

10. The height-adjustable desk as described in claim 9, characterized in that: The surface of the adjusting rod (32-12) is hinged to a support rod (32-13), and the bottom of the support rod (32-13) is hinged to the liner (13).

11. The height-adjustable desk as described in claim 10, characterized in that: The bottom of the adjusting rod (32-12) is slidably connected to a base (32-14), and the bottom of the base (32-14) is fixedly connected to the liner (13).

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