Lifting table with built-in AC power line

Abstract

The utility model relates to the technical field of lifting tables, in particular to a lifting table with a built-in AC power line, which comprises a table frame, a lifting column, a base, a control box, a motor driver, the AC power line, a line arranging box mechanism and a multi-stage lifting mechanism, the line arranging box mechanism comprises a front outer shell, a rear outer shell, a front line arranging strip and a rear line arranging strip, and the multi-stage lifting mechanism comprises a multi-stage screw rod device. The lifting column is internally provided with a multi-stage lead screw device, the multi-stage lead screw device is connected with a multi-stage pipe guiding device, the multi-stage pipe sleeving device further comprises a multi-stage pipe sleeving device, the multi-stage lead screw device comprises an inner lead screw connected with a motor driver, and an outer lead screw is arranged on the outer side of the inner lead screw through a spline sleeve. The lifting function is not affected, meanwhile, the problem that the AC power line can ascend and descend along with the table when the table ascends and descends is solved, and the risk that the AC power line is scratched to be powered off or damaged when the table ascends and descends is avoided.

Description

Technical Field

[0001] This utility model relates to the field of height-adjustable desks, specifically to a height-adjustable desk with a built-in AC power cord. Background Technology

[0002] As modern office concepts shift towards intelligence and humanization, height-adjustable desks are increasingly widely used in office and home settings. Currently, most height-adjustable desks on the market use a control box connected to an AC power supply. Their core components include an electric lifting device (usually composed of a motor, lead screw, and guide rail). The control box is responsible for receiving user commands (such as operation via buttons on the control panel or remote control), regulating the motor's operation, driving the lead screw to rotate, and moving the desktop along the guide rail to achieve the lifting action. The power supply is connected to the control box through an external standard AC power cord to provide power support for the entire system. Because office environments and home spaces are often cluttered with various items, such as desk and chair legs, filing cabinet corners, and cable management boxes, the power cord is highly susceptible to rubbing against these objects during frequent raising and lowering of the power desk. If the power cord's outer sheath is scratched or the connector becomes loose, power supply may be interrupted instantly, causing ongoing work to be interrupted, such as data loss or equipment malfunction and restart, causing significant inconvenience to the user. Furthermore, long-term repeated raising and lowering will gradually fatigue and damage the internal wires of the power cord, accelerating insulation aging and reducing its electrical performance. This not only increases the risk of electrical leakage but may also cause the power cord to break completely, shortening its lifespan and increasing maintenance costs and replacement frequency. Additionally, the power cord dragging on the ground is easily stepped on by passersby, further exacerbating the damage. Therefore, an innovative solution is needed to overcome these drawbacks, ensuring the safe and stable operation of the power desk and improving the user experience. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a height-adjustable desk with a built-in AC power cord, thereby solving the problem of the AC power cord being external in existing height-adjustable desks.

[0004] To solve the above problems, the technical solution of this utility model is as follows: A height-adjustable desk with built-in AC power cord includes a desk frame, retractable lifting columns connected to both ends of the desk frame, a base connected to the bottom end of the lifting columns, a control box for controlling the lifting columns on the desk frame, a motor driver connected to the top of the lifting columns, the control box and the motor driver being connected to the AC power cord, and a cable management box mechanism for hiding the AC power cord being provided inside the lifting columns, the lifting columns including a multi-stage lifting mechanism.

[0005] Furthermore, the cable management box mechanism includes a front outer shell and a rear outer shell, and a front cable management line and a rear cable management line are provided in the front outer shell and the rear outer shell for the AC power cord to pass through. The part of the front cable management line and the rear cable management line that the AC power cord does not pass through is curved. The rear cable management line is fixed on the base and the front cable management line is fixed on the table frame.

[0006] Furthermore, the multi-stage lifting mechanism includes a multi-stage lead screw device connected to a motor driver, the multi-stage lead screw device being connected to a multi-stage conduit device, and also includes a multi-stage sleeve device disposed outside the multi-stage conduit device.

[0007] Furthermore, the multi-stage lead screw device includes an inner lead screw connected to a motor driver, and an outer lead screw is sleeved on the outside of the inner lead screw via a spline.

[0008] Furthermore, the multi-stage conduit device includes an inner conduit located outside the outer lead screw, a fixing block fixedly connected to the bottom end of the inner conduit, an outer slider threadedly connected to the outer lead screw at the top end of the inner conduit, an outer guide block rotatably connected to the outer lead screw at the upper end of the outer slider and the top end of the outer lead screw, and an outer conduit fixedly connected to the outer guide block at the outside of the inner conduit.

[0009] Furthermore, a limiting block is rotatably connected to the bottom of the outer lead screw, which works in conjunction with the outer slider to guide the rotation of the outer lead screw. The limiting block is connected to the inner wall groove of the inner guide tube.

[0010] Furthermore, the multi-stage sleeve device includes an inner sleeve fixedly connected to the table frame, a middle sleeve provided outside the inner sleeve, and an outer sleeve fixedly connected to the base outside the middle sleeve.

[0011] Furthermore, a moving block is fixedly connected to the bottom end of the outer conduit. The moving block is fixedly connected to the front outer shell and the rear outer shell, and the moving block is fixedly connected to the middle sleeve.

[0012] Furthermore, the motor driver is connected to the internal lead screw via a helical gear.

[0013] Compared with the prior art, this utility model has the following beneficial effects: by setting a cable management box mechanism inside the lifting column, the structural space of the lifting column is fully utilized. Without affecting the lifting function, the problem of the AC power cord following the table when the table is raised and lowered is improved, and the risk of the AC power cord being scratched and cut off or damaged when the table is raised and lowered is solved. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure at point A of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure at point B of this utility model;

[0017] Figure 4 This is an anatomical diagram of the cable management box mechanism of this utility model;

[0018] Figure 5 This is a schematic diagram of the installation of the external guide block of this utility model;

[0019] Figure 6 This is a cross-sectional view of the multi-stage screw device and multi-stage guide tube device of this utility model;

[0020] Figure 7 This is a schematic diagram of the installation of the external lead screw of this utility model.

[0021] In the diagram: 1 Table frame, 2 Lifting column, 3 Base, 4 Control box, 5 Motor driver, 6 AC power cord, 7 Front housing, 701 Front trim line, 8 Rear housing, 801 Rear trim line, 9 Inner lead screw, 10 Outer lead screw, 11 Spline, 12 Inner guide tube, 13 Fixing block, 14 Outer slider, 15 Outer guide block, 16 Outer guide tube, 17 Limiting block, 18 Inner sleeve, 19 Middle sleeve, 20 Outer sleeve, 21 Motion block. Detailed Implementation

[0022] like Figure 1-3 As shown, a height-adjustable desk with a built-in AC power cord includes a desk frame 1, retractable lifting columns 2 connected to both ends of the desk frame 1, a base 3 connected to the bottom end of the lifting columns 2, a control box 4 for controlling the lifting columns on the desk frame 1, a motor driver 5 connected to the top of the lifting columns 2, the control box 4 and the motor driver 5 being connected to the AC power cord 6, and a cable management mechanism for hiding the AC power cord 6 inside the lifting columns 2. The lifting columns 2 include a multi-stage lifting mechanism.

[0023] like Figure 4As shown, the cable management box mechanism includes a front outer shell 7 and a rear outer shell 8. Inside the front outer shell 7 and the rear outer shell 8, there are front cable management lines 701 and rear cable management lines 801 for the AC power cord 6 to pass through. The front cable management lines 701 and rear cable management lines 801 guide the AC power cord 6 and prevent it from getting tangled inside the front outer shell 7 and the rear outer shell 8. The portions of the AC power cord 6 that do not pass through the front cable management lines 701 and the rear cable management lines 801 are curved. The rear cable management line 801 is fixed to the base 3. The front guide line 701 is fixed on the table frame 1. The AC power cord 6 can enter the rear guide line 801 from the bottom, pass out from the top of the rear guide line 801, bend at the top, bend from the bottom of the rear outer shell 8 into the front outer shell 7, and then bend at the top of the front outer shell 7. The front guide line 701 is located on the right side of the AC power cord 6. The front guide line 701 and the rear guide line 801 can be located on the same side, which can ensure that the AC power cord 6 is straightened and bent as the lifting column 2 moves within the front outer shell 7 and the rear outer shell 8.

[0024] The multi-stage lifting mechanism includes a multi-stage screw device connected to the motor driver 5, a multi-stage conduit device connected to the multi-stage screw device, and a multi-stage sleeve device located outside the multi-stage conduit device.

[0025] like Figure 5-7 As shown, the multi-stage lead screw device includes an inner lead screw 9 connected to a motor driver 5. The motor driver 5 and the inner lead screw 9 are connected by a helical gear. An outer lead screw 10 is sleeved on the outside of the inner lead screw 9 via a spline 11.

[0026] like Figure 6 , 7 As shown, the multi-stage conduit device includes an inner conduit 12 located outside the outer lead screw 10. A fixing block 13 is fixedly connected to the bottom end of the inner conduit 12. An outer slider 14, which is threadedly connected to the outer lead screw 10, is connected to the top end of the inner conduit 12. An outer guide block 15, which is rotatably connected to the outer lead screw 10, is located at the upper end of the outer slider 14 and the top end of the outer lead screw 10. An outer conduit 16, which is fixedly connected to the outer guide block 15, is located outside the inner conduit 12. A groove is formed at the top of the outer lead screw 10, and the outer guide block 15 can rotate within the groove. When the lifting column 2 extends and retracts, the outer lead screw 10 extends and retracts from the inner conduit 12, and the outer guide block 15 drives the outer conduit 16 to extend and retract. The inner conduit 12, the fixing block 13, and the outer slider 14 form a whole, and the outer conduit 16 and the outer guide block 15 form a whole.

[0027] like Figure 6 , 7As shown, a limiting block 17 is rotatably connected to the bottom of the outer lead screw 10, which works in conjunction with the outer slider 14 to guide the rotation of the outer lead screw 10. The limiting block 17 is connected to the inner wall groove of the inner guide tube 12. A groove is opened at the bottom of the outer lead screw 10, and the limiting block 17 can rotate in the groove. At the same time, it is connected to the inner guide tube 12 groove to ensure that when the lifting column 2 is extended or retracted, the outer lead screw 10 extends out of the inner guide tube 12 and retracts.

[0028] The multi-stage sleeve device includes an inner sleeve 18 fixedly connected to the table frame 1, a middle sleeve 19 provided outside the inner sleeve 18, and an outer sleeve 20 fixedly connected to the base 3 provided outside the middle sleeve 19.

[0029] A moving block 21 is fixedly connected to the bottom end of the outer conduit 16. The moving block 21 is fixedly connected to the front outer shell 7 and the rear outer shell 8, and the moving block 21 is fixedly connected to the middle sleeve 19.

[0030] In use, the motor driver 5 drives the inner lead screw 9 to rotate, and the outer lead screw 10 rotates synchronously with the inner lead screw 9 through the spline 11. The outer slider 14 rotates with the outer lead screw 10, and the outer slider 14 drives the inner guide tube 12 to move downwards and push it to the base 3. The outer slider 14 then starts to push the lifting column 2 in the opposite direction until the outer slider 14 contacts the limit block 17 and reaches the limit. At the same time, as the outer lead screw 10 rises, the outer guide block 15 drives the outer guide tube 16 to rise accordingly, further driving the moving block 21, the front outer shell 7, the rear outer shell 8, and the front guide line 701 to rise. The AC power cord 6 is gradually straightened inside the front outer shell 7 and the rear outer shell 8. The middle sleeve 19 rises with the table frame 1 to prevent the AC power cord 6 on one side of the front guide line 701 from being exposed. When descending, the motor driver 5 can simply reverse, thus realizing the synchronous lifting of the lifting column 2.

[0031] The above specific 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 examples, 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 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 with a built-in AC power cord, comprising a desk frame, retractable lifting columns connected to both ends of the desk frame, and a base connected to the bottom end of the lifting columns, characterized in that: A control box for controlling the lifting column is provided on the table frame. A motor driver is connected to the top of the lifting column. The control box and motor driver are connected to the AC power cord. A cable management box mechanism for hiding the AC power cord is provided inside the lifting column. The lifting column includes a multi-stage lifting mechanism.

2. The height-adjustable desk with a built-in AC power cord according to claim 1, characterized in that: The cable management box mechanism includes a front outer shell and a rear outer shell. The front and rear outer shells are provided with front and rear cable management lines for the AC power cord to pass through. The portions of the front and rear cable management lines through which the AC power cord does not pass are curved. The rear cable management line is fixed to the base, and the front cable management line is fixed to the table frame.

3. A height-adjustable desk with a built-in AC power cord according to claim 2, characterized in that: The multi-stage lifting mechanism includes a multi-stage lead screw device connected to a motor driver, the multi-stage lead screw device being connected to a multi-stage conduit device, and also includes a multi-stage sleeve device disposed outside the multi-stage conduit device.

4. A height-adjustable desk with a built-in AC power cord according to claim 3, characterized in that: The multi-stage lead screw device includes an inner lead screw connected to a motor driver, and an outer lead screw sleeved on the outside of the inner lead screw via a spline.

5. A height-adjustable desk with a built-in AC power cord according to claim 4, characterized in that: The multi-stage conduit device includes an inner conduit located outside the outer lead screw, a fixing block fixedly connected to the bottom end of the inner conduit, an outer slider threadedly connected to the outer lead screw at the top end of the inner conduit, an outer guide block rotatably connected to the outer lead screw at the upper end of the outer slider and the top end of the outer lead screw, and an outer conduit fixedly connected to the outer guide block on the outside of the inner conduit.

6. A height-adjustable desk with a built-in AC power cord according to claim 5, characterized in that: A limiting block is rotatably connected to the bottom of the outer lead screw, which works in conjunction with the outer slider to guide the rotation of the outer lead screw. The limiting block is connected to the inner wall groove of the inner guide tube.

7. A height-adjustable desk with a built-in AC power cord according to claim 6, characterized in that: The multi-stage sleeve device includes an inner sleeve fixedly connected to the table frame, a middle sleeve outside the inner sleeve, and an outer sleeve fixedly connected to the base outside the middle sleeve.

8. A height-adjustable desk with a built-in AC power cord according to claim 7, characterized in that: A moving block is fixedly connected to the bottom end of the outer conduit. The moving block is fixedly connected to the front outer shell and the rear outer shell, and the moving block is fixedly connected to the middle sleeve.

9. A height-adjustable desk with a built-in AC power cord according to claim 8, characterized in that: The motor driver is connected to the internal lead screw via a helical gear.

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