Extensible computer lifting desk

By designing a height adjustment mechanism and folding structure on the electric lifting table, the expansion or folding function of the table plate is achieved, and the problem of insufficient functionality of the existing electric lifting table is solved and the convenience of use is improved.

CN222888725UActive Publication Date: 2025-05-23JIANGSU RIEMANN INTELLIGENT TECH CO LTD
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Patent Information

Application Number
CN202421874667.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-05
Publication Date
2025-05-23
Estimated Expiration
2034-08-05

AI Technical Summary

Technical Problem

The existing electric lifting table lacks expansion function and cannot adjust the table area according to the needs of use, resulting in insufficient functionality.

Method used

An extensible computer lifting table is designed, adopting a height adjustment mechanism and a folding structure, and the expansion or folding function of the table is realized through the combination of support frame, extension plate and table plate.

Benefits of technology

It realizes flexible adjustment of the table plate, meets different usage needs, and improves the functionality and convenience of the electric lifting table.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an extensible computer lifting desk. The extensible computer lifting desk comprises a height adjusting mechanism, a folding structure, a supporting frame, an extending plate and a desk plate. The supporting frame comprises a fixed support, a sliding rod and a table support, the sliding rod is slidably connected to the fixed support in the vertical direction, the table support is fixedly connected to the upper end of the sliding rod, and the table plate is fixedly connected to the upper surface of the table support; the height adjusting mechanism is arranged on the table support and the fixing support in a matched mode. The folding structure comprises a fixing assembly and a swing assembly, the fixing assembly is fixedly connected with the lower portion of the side edge of the table board, the swing assembly is connected with the fixing assembly in a matched mode, and the extension board is fixedly connected with the swing assembly and can swing from the vertical direction to the horizontal direction of the table board. The technical problems that an electric lifting table lacks an expansion function, so that the area of the table plate of the electric lifting table cannot be adjusted according to use requirements, and the use functionality is insufficient are solved.
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Description

Technical Field

[0001] The utility model relates to the technical field of office appliances, in particular to an expandable computer lifting table. Background Art

[0002] As a common equipment for home and study, tables are widely used in our lives. According to different people's heights and usage habits, as well as the needs of work or study, the specific lifting function of the table top will bring a lot of convenience to life, work and study, and improve comfort.

[0003] However, the electric lifting tables currently on the market lack expansion functions, which makes it impossible for the electric lifting tables to adjust the table area according to usage requirements, and the functionality of use is insufficient. Utility Model Content

[0004] The purpose of the utility model is to provide an electric lifting table with a wire harness structure to solve the above technical problems.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an expandable computer lifting table, comprising:

[0006] Height adjustment mechanism, folding structure, support frame, extension board and table top;

[0007] The support frame includes a fixed bracket, a sliding rod and a table bracket, the sliding rod is slidably connected to the fixed bracket along the vertical direction, the table bracket is fixedly connected to the upper end of the sliding rod, and the table board is fixedly connected to the upper surface of the table bracket;

[0008] The height adjustment mechanism is cooperatively arranged on the table bracket and the fixed bracket, and is used to adjust the vertical height of the table top;

[0009] The folding structure includes a fixed component and a swing component, wherein the fixed component is fixedly connected to the lower side of the table board, the swing component is cooperatively connected to the fixed component, and the extension plate is fixedly connected to the swing component, so that the extension plate can swing from the vertical direction to the horizontal direction of the table board;

[0010] When the table is in the extended state, the extension plate rotates to be at the same level as the table top; when the table is in the folded state, the extension plate rotates to a position perpendicular to the bottom of the table top.

[0011] In one embodiment, the fixing assembly includes a tripod and a connecting rod, the tripod is fixedly connected to the lower side of the table top, and the connecting rod is fixedly connected to the tripod;

[0012] The swing assembly includes a rotating frame, a limiting rod and a locking structure;

[0013] One end of the rotating frame is rotatably connected to the upper part of the connecting rod, the extension plate is fixedly connected to the upper surface of the rotating frame, and a limiting groove is provided in the middle of the rotating frame;

[0014] One end of the limit rod is rotatably connected to the lower part of the connecting rod, and the other end of the limit rod is provided with a limit shaft, and the limit shaft is slidably arranged in the limit groove;

[0015] The limiting shaft is cooperatively connected with the locking structure. When the extension plate is rotated to be at the same horizontal height as the table top, the locking structure fixes the limiting shaft on the rotating frame.

[0016] In one embodiment, the locking structure includes a pressing rod and a limiting slot;

[0017] The middle part of the pressing rod is rotatably connected to the limiting shaft, the front end of the pressing rod is a pressing part, the rear end of the pressing rod is a locking part, and the rotating frame is provided with a limiting locking groove corresponding to the position of the locking part of the pressing rod;

[0018] A torsion spring is connected between the pressing rod and the limiting shaft, and the torsion force of the torsion spring drives the pressing portion of the pressing rod to swing in a direction away from the rotating frame, so that the locking portion of the pressing rod abuts against the rotating frame;

[0019] When the table is in the extended state, the locking portion of the pressing rod is locked in the limiting slot, thereby locking the position of the limiting axis.

[0020] In one embodiment, the height adjustment mechanism includes a motor, a screw and a nut, the motor is fixedly connected to the table bracket through a motor bracket, the driving shaft of the motor is fixedly connected to the upper end of the screw, the lower end of the screw is matched with the nut, and the nut is fixedly arranged on the fixed bracket;

[0021] A control button is arranged on the front side of the table bracket, and the control button is connected with the motor signal to control the forward and reverse rotation of the motor.

[0022] In one of the embodiments, the fixed support includes a vertical support and a horizontal support;

[0023] The vertical support is fixedly connected to the horizontal support;

[0024] The vertical bracket is a hollow structure, the sliding rod is slidably arranged in the vertical bracket, and sliding wheels are symmetrically arranged on the vertical bracket, and the wheel surfaces of the sliding wheels are against the two symmetrical side surfaces of the sliding rod.

[0025] In one embodiment, a lower edge plate is provided on the rear side of the table top, and a socket and a wiring harness structure are provided on the lower edge plate;

[0026] The wire harness structure is arranged on the lower edge plate, and the wire harness structure comprises an upper wire clamping plate and a lower wire clamping plate;

[0027] The upper wire clamping plate and the lower wire clamping plate are connected at one end by a hinge structure, and are detachably connected at the other end by a snap structure. The upper wire clamping plate and the lower wire clamping plate are provided with a plurality of matching wire clamping grooves, which are used to clamp the wires regularly.

[0028] In one embodiment, there are two wire harness structures, which are respectively arranged in parallel on the lower edge plate.

[0029] In one embodiment, there are two height adjustment mechanisms, which are symmetrically distributed on both sides of the support frame.

[0030] In one of the embodiments, a screw hole installation position is provided at the end of the horizontal bracket.

[0031] In one of the embodiments, the fixing bracket is provided with a reinforcing rod.

[0032] Compared with the prior art, the beneficial effects of the utility model are:

[0033] An expandable computer lifting table provided by the present application includes a height adjustment mechanism, a folding structure, a support frame, an extension plate and a table top. The height adjustment mechanism is used to control and adjust the height of the table top to realize the function of electric lifting. The folding structure includes a fixed component and a swing component. The fixed component is fixedly arranged below the side of the table top. The swing component is cooperatively connected with the fixed component. The extension plate is fixedly connected with the swing component, so that the extension plate can swing from the vertical direction to the horizontal direction of the table top, thereby realizing the expansion or folding function of the table top, solving the technical problem that the electric lifting table lacks an expansion function, making it impossible for the electric lifting table to adjust the table top area according to usage requirements and insufficient functionality. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of the first angle structure of the expandable computer lifting table provided in an embodiment of the present application;

[0035] Figure 2 A schematic diagram of the second angle structure of the expandable computer lifting table provided in the embodiment of the present application;

[0036] Figure 3 It is a partial enlarged view of the folding structure in the embodiment of the present application;

[0037] Figure 4It is a schematic diagram of the internal structure of the folding structure in the embodiment of the present application.

[0038] In the figure: 1. height adjustment mechanism; 2. extension plate; 3. table top; 4. fixed bracket; 5. sliding rod; 6. table bracket; 7. fixed component; 8. swing component; 9. tripod; 10. connecting rod; 11. rotating frame; 12. limit rod; 13. limit slot; 14. limit shaft; 15. pressing rod; 16. limit slot; 17. torsion spring; 18. motor; 19. screw rod; 20. nut; 21. control button; 22. sliding wheel; 23. lower edge plate; 24. socket; 25. upper wire clamping plate; 26. lower wire clamping plate; 27. screw hole installation position. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0041] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0042] See also Figures 1 to 4 , the utility model provides a technical solution: an expandable computer lifting table, comprising: a height adjustment mechanism 1, a folding structure, a support frame, an extension plate 2 and a table top 3;

[0043] The support frame includes a fixed bracket 4, a sliding rod 5 and a table bracket 6. The sliding rod 5 is slidably connected to the fixed bracket 4 along the vertical direction. The table bracket 6 is fixedly connected to the upper end of the sliding rod 5. The table board 3 is fixedly connected to the upper surface of the table bracket 6.

[0044] The height adjustment mechanism 1 is cooperatively arranged on the table support 6 and the fixed support 4, and is used to adjust the vertical height of the table board 3;

[0045] The folding structure includes a fixed component 7 and a swing component 8. The fixed component 7 is fixedly connected to the lower side of the table board 3, the swing component 8 is matched with the fixed component 7, and the extension plate 2 is fixedly connected to the swing component 8, so that the extension plate 2 can swing from the vertical direction to the horizontal direction of the table board 3;

[0046] When the table is in the extended state, the extension plate 2 rotates to be at the same level as the table top 3; when the table is in the folded state, the extension plate 2 rotates to a position perpendicular to the bottom of the table top 3.

[0047] It should be noted that the support frame is used to support the table top 3 and the height adjustment mechanism 1, and the support frame includes a fixed bracket 4, a sliding rod 5 and a table bracket 6. The length direction of the sliding rod 5 is the vertical direction. The sliding rod 5 is slidably connected to the fixed bracket 4, so that the sliding rod 5 can slide up and down along the vertical direction;

[0048] The height adjustment mechanism 1 is respectively connected with the table bracket 6 and the fixed bracket 4, and the height adjustment mechanism 1 is used to drive the table bracket 6 to slide relative to the fixed bracket 4, so that the table top 3 can slide up and down in the vertical direction to realize the lifting function; specifically, the height adjustment structure is an electric adjustment mechanism, and its structure can be a gear rack structure, a screw 19 nut 20 structure or a slide rail structure, etc., and no specific restrictions are made here.

[0049] The folding structure includes a fixed component 7 and a swing component 8. The fixed component 7 is fixedly connected to the lower side of the table top 3. The swing component 8 is cooperatively connected to the fixed component 7 so that the swing component 8 can swing relative to the fixed component 7. The extension plate 2 is fixedly connected to the swing component 8, so that when the swing component 8 swings, it will drive the extension plate 2 to swing, thereby realizing the folding function of the extension plate 2.

[0050] An expandable computer lifting table provided in the present application includes a height adjustment mechanism 1, a folding structure, a support frame, an extension plate 2 and a table top 3. The height adjustment mechanism 1 is used to control and adjust the height of the table top 3 to realize the function of electric lifting. The folding structure includes a fixed component 7 and a swing component 8. The fixed component 7 is fixedly arranged below the side of the table top 3. The swing component 8 is connected to the fixed component 7. The extension plate 2 is fixedly connected to the swing component 8, so that the extension plate 2 can swing from the vertical direction to the horizontal direction of the table top 3, thereby realizing the expansion or folding function of the table top 3, solving the technical problem that the electric lifting table lacks an expansion function, making it impossible for the electric lifting table to adjust the area of ​​the table top 3 according to usage requirements and insufficient functionality.

[0051] As a further improvement, the fixing assembly 7 of the expandable computer lifting table provided in the embodiment of the present application includes a tripod 9 and a connecting rod 10, the tripod 9 is fixedly connected to the lower side of the table board 3, and the connecting rod 10 is fixedly connected to the tripod 9;

[0052] The swing assembly 8 includes a rotating frame 11, a limiting rod 12 and a locking structure;

[0053] One end of the rotating frame 11 is rotatably connected to the upper part of the connecting rod 10, the extension plate 2 is fixedly connected to the upper surface of the rotating frame 11, and a limiting groove 13 is provided in the middle of the rotating frame 11;

[0054] One end of the limiting rod 12 is rotatably connected to the lower part of the connecting rod 10, and the other end of the limiting rod 12 is provided with a limiting shaft 14, and the limiting shaft 14 is slidably arranged in the limiting groove 13;

[0055] The limiting shaft 14 is cooperatively connected with the locking structure. When the extension plate 2 rotates to be at the same horizontal height as the table top 3 , the locking structure fixes the limiting shaft 14 on the rotating frame 11 .

[0056] Specifically, the tripod 9 is fixedly connected to the lower surface of the table top 3, the tripod 9 is used to improve the support of the extension plate 2, and the connecting rod 10 is fixedly connected to the vertical rod of the tripod 9;

[0057] The rotating frame 11 is an n-shaped structure, including two side plates and a top plate. One end of the two side plates of the rotating frame 11 is rotatably connected to the upper part of the connecting rod 10, and the extension plate 2 is fixedly connected to the top plate of the rotating frame 11. The middle part of the two side plates of the rotating frame 11 is provided with a limiting groove 13;

[0058] One end of the limit rod 12 is rotatably connected to the lower part of the connecting rod 10, and the other end of the limit rod 12 is provided with a limit shaft 14, which is slidably arranged in the limit groove 13, so that when the rotating rod rotates, the limit shaft 14 slides in the limit groove 13 accordingly. The limit shaft 14 is connected with the locking structure, and when the extension plate 2 rotates to the same horizontal height as the table plate 3, the locking structure fixes the limit shaft 14 at a specific position in the limit groove 13, so that the positions of the limit rod 12, the rotating rod, and the extension plate 2 are fixed and locked, thereby realizing the expansion function of the table.

[0059] As a further improvement, the locking structure of the expandable computer lifting table provided in the embodiment of the present application includes a pressing rod 15 and a limiting slot 16;

[0060] The middle part of the pressing rod 15 is rotatably connected to the limiting shaft 14, the front end of the pressing rod 15 is a pressing part, the rear end of the pressing rod 15 is a locking part, and the rotating frame 11 is provided with a limiting locking groove 16 corresponding to the locking part of the pressing rod 15;

[0061] A torsion spring 17 is connected between the pressing rod 15 and the limiting shaft 14. The torsion force of the torsion spring 17 drives the pressing portion of the pressing rod 15 to swing in a direction away from the rotating frame 11, so that the locking portion of the pressing rod 15 abuts against the rotating frame 11.

[0062] When the table is in the extended state, the locking portion of the pressing rod 15 is locked in the limiting slot 16 , thereby locking the position of the limiting shaft 14 .

[0063] Specifically, the middle part of the pressing rod 15 is rotatably connected to the limiting shaft 14, and a torsion spring 17 is connected between the pressing rod 15 and the limiting shaft 14. The front end of the pressing rod 15 is a pressing part, and the rear end of the pressing rod 15 is a locking part. The rotating frame 11 is provided with a limiting locking groove 16 corresponding to the locking part of the pressing rod 15. When the extension plate 2 needs to be folded, the pressing part of the pressing rod 15 is pushed upward by hand, so that the locking part of the pressing rod 15 swings downward around the limiting shaft 14, so that the locking part of the pressing rod 15 disengages from the limiting locking groove 16, and then the limiting shaft 14 can slide freely in the limiting groove 13, thereby unlocking the limiting rod 12 and the rotating frame 11, so that the extension plate 2 can be folded.

[0064] As a further improvement, the height adjustment mechanism 1 of the expandable computer lifting table provided in the embodiment of the present application includes a motor 18, a screw 19 and a nut 20. The motor 18 is fixedly connected to the table bracket 6 through the motor 18 bracket. The drive shaft of the motor 18 is fixedly connected to the upper end of the screw 19. The lower end of the screw 19 is matched with the nut 20, and the nut 20 is fixedly arranged on the fixed bracket 4.

[0065] A control button 21 is provided on the front side of the table bracket 6 , and the control button 21 is connected to the motor 18 signal for controlling the forward and reverse rotation of the motor 18 .

[0066] Specifically, the motor 18 is fixedly connected to the table bracket 6 through the motor 18 bracket, the driving shaft of the motor 18 is vertically downward, the length direction of the screw 19 is in the vertical direction, the upper end of the screw 19 is fixedly connected to the driving shaft of the motor 18 through a coupling, and the lower part of the screw 19 is threadedly connected to the nut 20, and the nut 20 is fixed to the fixed bracket 4. When the motor 18 is driven, the motor 18 drives the screw 19 to rotate, and the screw 19 moves in the vertical direction on the nut 20, thereby driving the motor 18 to move, so that the table top 3 rises and falls.

[0067] The control button 21 is used to electrically control the motor 18, making the operation more convenient. The structure of the height adjustment mechanism 1 in this embodiment is simpler, reducing the production cost, and solving the technical problems that the lifting and lowering adjustment methods of existing tables are cumbersome and inconvenient, and the lifting and lowering adjustment structure is too complicated, resulting in high manufacturing, installation and maintenance costs.

[0068] As a further improvement, the fixed bracket 4 of the expandable computer lifting table provided in the embodiment of the present application includes a vertical bracket and a horizontal bracket;

[0069] The vertical support is fixedly connected to the horizontal support;

[0070] The vertical bracket is a hollow structure. The sliding rod 5 is slidably arranged in the vertical bracket. The vertical bracket is symmetrically provided with sliding wheels 22 . The wheel surfaces of the sliding wheels 22 are against the two symmetrical side surfaces of the sliding rod 5 .

[0071] Specifically, there are two vertical brackets and two sliding rods 5, and both are stainless steel pipe structures. The sliding rod 5 is slidably set in the vertical bracket. Two sliding wheels 22 are respectively set on the symmetrical two side walls of the upper end of each vertical bracket. The sliding rod 5 is located between the two sliding wheels 22 and is against the wheel surfaces of the two sliding wheels 22. Therefore, by setting the sliding wheels 22, the sliding resistance of the sliding rod 5 is reduced, the durability of the bracket is improved, and at the same time, the driving force of the motor 18 can be reduced to achieve a more energy-saving purpose.

[0072] As a further improvement, the rear side of the table top 3 of the expandable computer lifting table provided in the embodiment of the present application is provided with a lower edge plate 23, and the lower edge plate 23 is provided with a socket 24 and a cable harness structure;

[0073] The wire harness structure is arranged on the lower edge plate 23, and the wire harness structure includes an upper wire clamping plate 25 and a lower wire clamping plate 26;

[0074] One end of the upper wire clamping plate 25 and the lower wire clamping plate 26 are connected by a hinge structure, and the other end is detachably connected by a snap structure. The upper wire clamping plate 25 and the lower wire clamping plate 26 are provided with a plurality of matching wire clamping grooves, which are used to clamp the wires regularly.

[0075] Specifically, the wire harness structure is arranged on the lower edge plate 23, which is used to fix the wires of the computer desk. The connectors of the wires are plugged into the socket 24. When the table top 3 is raised or lowered, the table top 3 drives the lower edge plate 23 to move synchronously, and the lower edge plate 23 drives the wire harness structure and the socket 24 to move synchronously, so that the wires on the table top 3 remain in a relatively static state, are not pulled by the lifting force, and will not be continuously entangled, thereby ensuring the safety, convenience and aesthetics of use.

[0076] The wire harness structure includes an upper wire clamping plate 25 and a lower wire clamping plate 26. The lower end of the upper wire clamping plate 25 and the lower end of the lower wire clamping plate 26 are rotatably connected through a hinge structure. The upper wire clamping plate 25 and the lower wire clamping plate 26 have semicircular wire clamping grooves on their opposite surfaces for clamping wires. The upper wire clamping plate 25 and the lower wire clamping plate 26 fix the wires through a buckle structure. This embodiment solves the technical problem that the electric lifting table is prone to pulling the wires against each other during the lifting process, and the wires are entangled and bound over time, which is difficult to untie. At the same time, the lifting of the desktop is also prone to tearing the wires apart, causing danger.

[0077] As a further improvement, the expandable computer lifting table provided in the embodiment of the present application has two wire bundling structures, which are respectively arranged in parallel on the lower edge plate 23. By setting up two wire bundling structures, the wire bundling structures have stronger constraints on the direction of the wires, further improving the regularity of the wires under the computer desk, and improving the aesthetics and ease of use.

[0078] As a further improvement, the expandable computer lifting table provided in the embodiment of the present application has two height adjustment mechanisms 1 symmetrically distributed on both sides of the support frame.

[0079] As a further improvement, the end of the horizontal bracket of the expandable computer lifting table provided in the embodiment of the present application is provided with a screw hole mounting position 27, which can be used to install a height adjustment base, thereby achieving height and angle adjustment of the fixed bracket 4.

[0080] As a further improvement, the fixed bracket 4 of the expandable computer lifting table provided in the embodiment of the present application is provided with a reinforcing rod, which can further improve the strength of the fixed bracket 4 and increase the durability of the table.

[0081] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An expandable computer lifting table, characterized in that: include: Height adjustment mechanism, folding structure, support frame, extension board and table top; The support frame includes a fixed bracket, a sliding rod and a table bracket, the sliding rod is slidably connected to the fixed bracket along the vertical direction, the table bracket is fixedly connected to the upper end of the sliding rod, and the table board is fixedly connected to the upper surface of the table bracket; The height adjustment mechanism is cooperatively arranged on the table bracket and the fixed bracket, and is used to adjust the vertical height of the table top; The folding structure includes a fixed component and a swing component, wherein the fixed component is fixedly connected to the lower side of the table board, the swing component is cooperatively connected to the fixed component, and the extension plate is fixedly connected to the swing component, so that the extension plate can swing from the vertical direction to the horizontal direction of the table board; When the table is in the extended state, the extension plate rotates to be at the same level as the table top; when the table is in the folded state, the extension plate rotates to a position perpendicular to the bottom of the table top.

2. The expandable computer lifting table according to claim 1, characterized in that: The fixing assembly includes a tripod and a connecting rod, wherein the tripod is fixedly connected to the lower side of the table top, and the connecting rod is fixedly connected to the tripod; The swing assembly includes a rotating frame, a limiting rod and a locking structure; One end of the rotating frame is rotatably connected to the upper part of the connecting rod, the extension plate is fixedly connected to the upper surface of the rotating frame, and a limiting groove is provided in the middle of the rotating frame; One end of the limiting rod is rotatably connected to the lower part of the connecting rod, and the other end of the limiting rod is provided with a limiting shaft, and the limiting shaft is slidably arranged in the limiting groove; The limiting shaft is cooperatively connected with the locking structure. When the extension plate is rotated to be at the same horizontal height as the table top, the locking structure fixes the limiting shaft on the rotating frame.

3. The expandable computer lifting table according to claim 2, characterized in that: The locking structure includes a pressing rod and a limiting slot; The middle part of the pressing rod is rotatably connected to the limiting shaft, the front end of the pressing rod is a pressing part, the rear end of the pressing rod is a locking part, and the rotating frame is provided with a limiting locking groove corresponding to the position of the locking part of the pressing rod; A torsion spring is connected between the pressing rod and the limiting shaft, and the torsion force of the torsion spring drives the pressing portion of the pressing rod to swing in a direction away from the rotating frame, so that the locking portion of the pressing rod abuts against the rotating frame; When the table is in the extended state, the locking portion of the pressing rod is locked in the limiting slot, thereby locking the position of the limiting axis.

4. The expandable computer lifting table according to claim 1, characterized in that: The height adjustment mechanism includes a motor, a screw and a nut, wherein the motor is fixedly connected to the table bracket through a motor bracket, the driving shaft of the motor is fixedly connected to the upper end of the screw, the lower end of the screw is matched with the nut, and the nut is fixedly arranged on the fixed bracket; A control button is arranged on the front side of the table bracket, and the control button is connected with the motor signal to control the forward and reverse rotation of the motor.

5. The expandable computer lifting table according to claim 4, characterized in that: The fixed support comprises a vertical support and a horizontal support; The vertical support is fixedly connected to the horizontal support; The vertical bracket is a hollow structure, the sliding rod is slidably arranged in the vertical bracket, and sliding wheels are symmetrically arranged on the vertical bracket, and the wheel surfaces of the sliding wheels are against the two symmetrical side surfaces of the sliding rod.

6. The expandable computer lifting table according to claim 1, characterized in that: A lower edge plate is provided on the rear side of the table top, and a socket and a wiring harness structure are provided on the lower edge plate; The wire harness structure comprises an upper wire clamping plate and a lower wire clamping plate; The upper wire clamping plate and the lower wire clamping plate are connected at one end by a hinge structure, and are detachably connected at the other end by a snap structure. The upper wire clamping plate and the lower wire clamping plate are provided with a plurality of matching wire clamping grooves, which are used to clamp the wires regularly.

7. The expandable computer lifting table according to claim 6, characterized in that: There are two wire harness structures, which are respectively arranged in parallel on the lower edge plate.

8. The expandable computer lifting table according to claim 1, characterized in that: There are two height adjustment mechanisms, which are symmetrically distributed on both sides of the support frame.

9. The expandable computer lifting table according to claim 5, characterized in that: The end of the horizontal bracket is provided with a screw hole installation position.

10. The expandable computer lifting table according to claim 1, characterized in that: The fixing bracket is provided with a reinforcing rod.