Electric lifting column with internal wiring

Abstract

The utility model discloses an electric lifting stand column of internal wiring belongs to electric lifting equipment technical field, including telescopic sleeve, electric push rod, cable, positioning board and spring, and cable is located in telescopic sleeve and has screw thread section and straight line section, and straight line section can stretch out from the end of telescopic sleeve, and cable is equipped with wire clamp in straight line section, and positioning board is fixed in the inboard of telescopic sleeve end, and the end of telescopic sleeve is equipped with the hole of keeping away, and the at least partial of spring is arranged in the screw thread section of cable, and the both ends of spring keep positioning setting relative to the both ends of cable. Through positioning board and spring, on one hand, improve the positioning strength of cable end, on the other hand, utilize spring to guide the cable screw thread section of retraction, avoid the situation that the screw thread section of cable is difficult to retract automatically after being pulled out by user, also avoid the situation that the screw thread section of cable is easy to cross and wind together after elastic failure after multiple telescopic, improve the use experience of user.

Description

Technical Field

[0001] This utility model relates to the field of electric lifting equipment technology, and in particular to an electric lifting column with internal wiring. Background Technology

[0002] Commercially available electric height-adjustable desks generally consist of a tabletop and an electric height-adjustable column located on the back of the tabletop. The column allows the tabletop to be adjusted to a suitable height, better meeting the needs of users whether standing or sitting, thus gaining increasing market acceptance. Users typically place computers, desk lamps, and other electronic devices on the tabletop. To address the power connection issue for these devices and for aesthetic reasons, some electric height-adjustable desks incorporate a power cable within the column. One end of the cable connects to AC power via a plug, while the other end connects to the electronic device via a connector. Currently, the cable within the column typically extends outwards from a cover plate at the end of the column via a rubber ring. The rubber ring is axially restrained within a hole in the cover plate, thus limiting the cable's movement. However, due to the elasticity of the rubber ring, the restraining force is relatively small. A slight pull from the user can cause the rubber ring to detach from the cover plate and pull the cable out. The pulled-out cable does not easily retract when the column shortens, requiring manual adjustment by the user, which negatively impacts the user experience. Utility Model Content

[0003] To address the shortcomings and deficiencies of the existing technology, this utility model provides an electrically operated lifting column with internal wiring. By adding a positioning plate and spring, the positioning strength of the cable end is improved, and the spring guides the retracted cable thread section, preventing the cable thread section from being pulled out by the user and making it difficult to retract automatically. It also prevents the cable thread section from easily crossing and winding together due to loss of elasticity after repeated expansion and contraction. This solves the problem that the cable is easily pulled out by the user and is not easy to retract, thus improving the user experience.

[0004] To achieve the above technical objectives, this utility model provides an electrically operated lifting column with internal wiring, comprising: Telescopic sleeve, comprising at least two telescopically fitting tube sections together; An electric actuator, which is located inside a telescopic sleeve and configured to drive the telescopic sleeve to extend or retract. A cable, which is disposed within a telescopic sleeve and has a threaded section and a straight section located at at least one end of the threaded section, the straight section extending outward from the end of the telescopic sleeve; It also includes a positioning plate and a spring. The cable has a wire clamp that cooperates with the positioning plate in the straight section. The positioning plate is fixed to the inside of the end of the telescopic sleeve. The end of the telescopic sleeve has a clearance hole for avoiding the wire clamp. At least part of the spring passes through the threaded section of the cable. The two ends of the spring are positioned relative to the two ends of the cable.

[0005] Preferably, the circumferential outer wall of the wire clip is provided with a positioning groove, and the positioning plate is provided with a slot with one end open, so that the wire clip enters from the open end of the slot and the positioning plate is partially embedded in the positioning groove.

[0006] Preferably, the positioning groove is provided around the circumference of the card.

[0007] Preferably, several card slots are provided at parallel intervals.

[0008] Preferably, the length of the slot is greater than the outer diameter of the wire clip.

[0009] Preferably, the end of the telescopic sleeve is provided with a cover plate, the positioning plate is fixed to the inner side of the cover plate, and the cover plate is provided with a clearance hole for avoiding the wire clamp.

[0010] Preferably, the end of the spring is positioned and connected to a wire clip or a positioning plate.

[0011] Preferably, the outer circumferential wall of the wire clip is provided with a groove located inside the positioning plate, and the end of the spring is positioned and connected to the wire clip by a positioning member that cooperates with the groove.

[0012] Preferably, the positioning plate has a positioning part on its inner side, and the end of the spring is connected to the positioning plate through the positioning part.

[0013] Preferably, the electric actuator and the cable are staggered laterally.

[0014] By adopting the above technical solution, this utility model has the following advantages: 1. The electric lifting column provided by this utility model is equipped with a positioning plate and a spring. The cable clamp for the straight section of the cable is positioned and engaged with the positioning plate. The positioning plate is fixed to the inner side of the end of the telescopic sleeve, and the end of the telescopic sleeve is provided with a clearance hole to avoid the cable clamp. The cooperation between the positioning plate and the cable clamp provides rigid positioning of the cable end, greatly improving the positioning strength of the cable end. Since the positioning plate is fixed to the inner side of the end of the telescopic sleeve, the straight section of the cable extends out of the telescopic sleeve from the clearance hole. This prevents the cable clamp from detaching from the telescopic sleeve when the user drags the cable, thus preventing the cable from being pulled out of the telescopic sleeve. This ensures that the threaded section of the cable is always inside the telescopic sleeve, preventing the threaded section of the cable from being difficult to retract automatically after being pulled out and requiring manual adjustment by the user, thereby improving the user experience.

[0015] A portion of the spring is inserted into the threaded section of the cable, with both ends of the spring positioned relative to the ends of the cable. When the electric actuator extends the telescopic sleeve, the threaded section of the cable is stretched, and the spring is stretched under the force. When the electric actuator retracts the telescopic sleeve, the released spring returns to its original shape, and the released cable, guided by the spring, causes the threaded section to retract orderly into a helical state. Using the spring to guide the retracted cable threaded section prevents it from easily tangling together due to loss of elasticity after repeated extension and retraction. This avoids the cable being unable to extend and retract in a timely manner according to the raising and lowering of the electric lifting column, thus helping to extend the cable's service life.

[0016] 2. A positioning groove is provided on the circumferential outer wall of the cable clip, and a slot with one end open is provided on the positioning plate. The cable clip can be inserted into the slot through the open end of the slot. The positioning plate is partially embedded in the positioning groove near the slot. The cooperation between the positioning groove and the slot makes the cable clip and the positioning plate fit together, thereby effectively positioning the cable clip axially, and thus effectively positioning the end of the cable, ensuring the positioning strength of the cable end, and preventing the cable clip from falling off the positioning plate when the user drags the cable.

[0017] 3. The positioning groove is preferably set around the circumference of the cable clip. The shape of the positioning groove is reasonably set so that the cable clip can be smoothly inserted into the opening end of the slot regardless of the circumferential orientation. This eliminates the circumferential orientation restriction when the cable clip enters the slot and effectively reduces the difficulty of assembly and mating between the cable clip and the positioning plate. In addition, the cable clip can also rotate circumferentially after mating with the positioning plate, which helps to facilitate the smooth retraction of the threaded section of the cable when the electric lifting column is shortened.

[0018] 4. The card slots are preferably set in parallel intervals. The number of card slots is reasonably set, thereby reasonably increasing the number of cables that are positioned by cooperating with the positioning plate. This increases the number of cables inside the electric lifting column while ensuring that the cables are distributed in an orderly manner.

[0019] 5. The length of the slot is preferably greater than the outer diameter of the cable clip. This ensures a stable positioning relationship between the cable clip and the positioning plate through the engagement of the positioning groove and the slot, preventing the cable clip from easily detaching from the slot on the positioning plate. Additionally, a longer slot can simultaneously engage with cable clips on multiple cables, thereby increasing the number of cables positioned by the positioning plate. This allows for a reasonable increase in the number of cables inside the electric lifting column while ensuring an orderly distribution of the cables.

[0020] 6. A cover plate is provided at the end of the telescopic sleeve. The positioning plate can be fixed inside the cover plate. The cover plate is provided with clearance holes. Reasonably setting the installation position of the positioning plate helps to reasonably reduce the installation difficulty of the positioning plate.

[0021] 7. The end of the spring can be positioned and connected to a wire clamp or a positioning plate. Furthermore, the end of the spring can be positioned and connected to the wire clamp through the cooperation of a positioning part and a groove, or the end of the spring can be connected to the positioning plate through a positioning part. Reasonably setting the specific connection method of the spring end ensures the stability of the spring end while reducing the difficulty of connecting it.

[0022] 8. The electric actuator and cable should preferably be staggered laterally to keep them as far apart as possible. This avoids interference between the cable and the actuator's movement, and also prevents wear on the cable or obstruction of the cable's threaded section. A well-planned layout improves the overall reliability, safety, and maintainability of the electric lifting column during long-term operation. Attached Figure Description

[0023] Figure 1 This is a structural diagram of the electrically operated lifting column in the retracted state in Embodiment 1; Figure 2 This is an internal structural diagram of the electric lifting column in the retracted state in Embodiment 1; Figure 3 This is an exploded view of the electric lifting column in Example 1; Figure 4 This is a partial structural diagram of the cable in Example 1; Figure 5 This is a structural diagram of the positioning plate in Example 1; Figure 6 This is a structural diagram of the cable and positioning plate in Example 1; Figure 7 This is a cross-sectional view of the cable and positioning plate in Embodiment 1. Figure 8 This is a diagram showing the connection structure between the cable and the spring in Example 1; Figure 9 This is an internal structural diagram of the electric lifting column in the extended state in Embodiment 1.

[0024] In the picture, 10 - electric lifting column. 100 - Telescopic sleeve, 110 - Pipe body, 111 - Inner pipe body, 112 - Intermediate pipe body, 113 - Outer pipe body, 120 - Cover plate, 130 - Clearance hole, 140 - End plate. 200-Electric linear actuator 300 - Cable, 310 - Threaded section, 320 - Straight section, 330 - Cable clamp, 331 - Positioning groove, 332 - Groove, 333 - Notch 400 - Positioning plate, 410 - Card slot 510 - Spring, 511 - Hook, 520 - Positioning element, 521 - Cable tie. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," and "bottom," etc., which indicate orientation or positional relationship, are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Example 1

[0026] Combination Figures 1 to 9 The electric lifting column 10 with internal wiring provided in Embodiment 1 of this utility model includes a telescopic sleeve 100, an electric push rod 200, a cable 300, a positioning plate 400, and a spring 510. The telescopic sleeve 100 includes at least two telescopic tubes 110 that are fitted together. The electric push rod 200 is disposed inside the telescopic sleeve 100 and configured to drive the telescopic sleeve 100 to extend or shorten. The cable 300 is disposed inside the telescopic sleeve 100 and has a threaded section 310 and a straight section 320 located at at least one end of the threaded section 310. The straight section 320 can extend outward from the end of the telescopic sleeve 100. The cable 300 has a wire clip 330 in the straight section 320 that is positioned and cooperates with the positioning plate 400. The positioning plate 400 is fixed to the inner side of the end of the telescopic sleeve 100. The end of the telescopic sleeve 100 is provided with a clearance hole 130 for avoiding the wire clip 330. At least a portion of the spring 510 passes through the threaded section 310 of the cable 300. The two ends of the spring 510 are positioned relative to the two ends of the cable 300.

[0027] The positioning plate 400 and the wire clip 330 work together to rigidly position the end of the cable 300, greatly improving the positioning strength of the cable 300 end. Since the positioning plate 400 is fixed inside the end of the telescopic sleeve 100, the straight section 320 of the cable 300 extends out of the telescopic sleeve 100 through the clearance hole 130. This prevents the wire clip 330 from disengaging from the telescopic sleeve 100 when the user drags the cable 300, thus preventing the cable 300 from being pulled out of the telescopic sleeve 100. This ensures that the threaded section 310 of the cable 300 remains inside the telescopic sleeve 100, preventing the threaded section 310 from being pulled out and requiring manual adjustment, thus improving the user experience. When the electric push rod 200 extends the telescopic sleeve 100, the threaded section 310 of the cable 300 is stretched, and the spring 510 is stretched under force. When the electric push rod 200 drives the telescopic sleeve 100 to shorten, the released spring 510 returns to its original shape, and the released cable 300, guided by the spring 510, causes the threaded section 310 to retract orderly into a spiral state. Using the spring 510 to guide the retracted threaded section 310 prevents the threaded section 310 from easily tangling together during retraction due to loss of elasticity after repeated extension and contraction. This avoids the cable 300 being unable to extend and retract in a timely manner according to the lifting of the electric lifting column 10, thus helping to extend the service life of the cable 300.

[0028] Combination Figure 1 , Figure 2 , Figure 3 In this embodiment, the telescopic sleeve 100 is described using a three-section structure as an example. The tube body 110 of the telescopic sleeve 100 includes an inner tube body 111, a middle tube body 112, and an outer tube body 113, which are sequentially connected from the inside to the outside. The telescopic sleeve 100 also includes a cover plate 120 at the end of the tube body 110. Specifically, the lower end of the inner tube body 111 and the upper end of the outer tube body 113 are both fixed with cover plates 120. In addition, the upper end of the inner tube body 111 and the upper end of the middle tube body 112 are both fixed with end plates 140. The end plates 140 are provided with holes for avoiding the electric push rod 200 and the cable 300. The electric push rod 200 is vertically placed inside the telescopic sleeve 110, and the head and tail ends of the electric push rod 200 are respectively fixedly connected to the cover plates 120 at both ends of the telescopic sleeve 110. When the electric push rod 200 extends outward, the telescopic sleeve 100 extends, and the electric lifting column 10 rises accordingly. When the electric push rod 200 retracts inward, the telescopic sleeve 100 shortens, and the electric lifting column 10 falls accordingly. The specific structures of the telescopic sleeve 100 and the electric push rod 200 can be found in existing technology and will not be described in detail here.

[0029] The side of each component facing the center of the electric lifting column 10 is defined as the inner side, and the side of each component facing away from the center of the electric lifting column 10 is defined as the outer side.

[0030] In this embodiment, the wire clip 330 and the cable 300 are preferably integrally formed. The cable 300 may have a straight segment 320 only at the upper or lower end of the threaded section 310, or it may have a straight segment 320 at both the upper and lower ends of the threaded section 310. The number of wire clips 330 on each cable 300 is the same as the number of straight segments 320. Figure 4 Furthermore, the line clip 330 is roughly cylindrical in shape, and its axial direction is approximately the same as the length direction of the straight segment 320. The integral molding method of the cable 300 and the line clip 330 can refer to existing technologies and will not be elaborated here. Additionally, the cable 300 can be configured as a telephone cable, power cable, data cable, etc., depending on the usage requirements; no specific limitation is made on the type of cable 300 here.

[0031] Combination Figure 4 , Figure 5 , Figure 6 , Figure 7 In this embodiment, the circumferential outer wall of the cable clip 330 is provided with a positioning groove 331, and the positioning plate 400 is provided with a slot 410 with one end open. The cable clip 330 can enter through the open end of the slot 410, and a portion of the positioning plate 400 near the slot 410 can be embedded in the positioning groove 331. The cooperation between the positioning groove 331 and the slot 410 makes the cable clip 330 and the positioning plate 400 fit together, thereby improving the positioning fit strength between the positioning plate 400 and the cable clip 330, preventing the cable clip 330 from easily detaching from the positioning plate 400 when the cable 300 is under force, thereby improving the positioning strength of the cable clip 330 relative to the end of the telescopic sleeve 100, and preventing the cable clip 330 from detaching from the telescopic sleeve 100 when the user drags the cable 300. Preferably, two positioning plates 400 are provided, which are respectively located inside the cover plates 120 at the upper and lower ends of the telescopic sleeve 100. The cover plates 120 have several spaced-apart clearance holes 130, which engage with the cable clips 330. The cable clips 330 on the upper straight section 320 of the cable 300 engage with the top positioning plate 400, and the cable clips 330 on the lower straight section 320 of the cable 300 engage with the bottom positioning plate 400. By rationally setting the number and distribution of the positioning plates 400, both the upper and lower ends of the cable 300 can maintain effective positioning relative to the ends of the telescopic sleeve 100.

[0032] In this embodiment, the positioning groove 331 on the outer peripheral wall of the wire clip 330 is preferably arranged in a circle around the circumference of the wire clip 330. The shape of the positioning groove 331 is reasonably set so that the wire clip 330 can smoothly enter from the opening end of the slot 410 regardless of the circumferential orientation, eliminating the circumferential orientation restriction when the wire clip 330 enters the slot 410, and effectively reducing the difficulty of assembly and mating between the wire clip 330 and the positioning plate 400.

[0033] In this embodiment, the positioning plate 400 preferably has several slots 410 spaced parallel to each other, and at least one slot 410 has a length greater than the outer diameter of the wire clip 330. By reasonably setting the number and length of the slots 410, the number of cables 300 positioned by cooperating with the positioning plate 400 can be appropriately increased, thereby increasing the number of cables 300 inside the electric lifting column 10 while ensuring an orderly distribution of the cables 300. In a specific embodiment, the number of slots 410 on the positioning plate 400 can be set to one, two, three, or other reasonable numbers depending on the size of the positioning plate 400 and the thickness of the wire clip 330. In an alternative embodiment, the length of the slot 410 can also be equal to or slightly smaller than the outer diameter of the wire clip 330. In a preferred embodiment, to facilitate the entry of the wire clip 330 into the slot 410, the opening end of the slot 410 can be flared.

[0034] In this embodiment, the cable 300 and the electric push rod 200 are preferably staggered laterally, so that the electric push rod 200 and the cable 300 are as far apart as possible. This avoids interference between the cable 300 and the movement of the electric push rod 200, and also prevents the moving electric push rod 200 from causing wear on the cable 300 or preventing the threaded section 310 of the cable 300 from extending and retracting smoothly. This rational arrangement of their positions improves the overall long-term reliability, safety, and maintainability of the electric lifting column 10. Specifically, the cable 300 and the electric push rod 200 can be distributed left and right, front and back, or diagonally within the telescopic sleeve 100.

[0035] Combination Figure 8In this embodiment, the outer circumferential wall of the cable clip 330 is further provided with a groove 332 located inside the positioning plate 400. The end of the spring 510 is positioned and connected to the cable clip 330 through a positioning member 520 that cooperates with the groove 332. Specifically, the end of the spring 510 is provided with a hook 511. The positioning member 520 can be a cable tie 521. The cable tie 521 is tightened in the groove 332 and tightens the hook 511 of the spring 510, thereby positioning the end of the spring 510 to the cable clip 330, and thus keeping the end of the spring 510 positioned relative to the end of the cable 300, that is, the end of the spring 510 and the end of the cable 300 maintain a relatively fixed positional relationship. Additionally, the wire clip 330 has a notch 333 at one end facing the threaded section 310, which communicates with the groove 332. The end of the spring 510 is engaged at the notch 333, and the hook 511 is positioned at the groove 332. The notch 333 allows the end of the spring 510 to remain straight, preventing the end of the spring 510 from bending. In a preferred embodiment, the notches 333 can be provided at reasonable intervals of two, three, or other reasonable numbers along the circumference of the wire clip 330. In other embodiments of this embodiment, the notches 333 can be omitted.

[0036] When assembling cable 300, the two ends of spring 510 can be connected to wire clip 330 through cable tie 521. Then, positioning plate 400 and several wire clips 330 located at the same end are assembled together through the cooperation of clip groove 410 and positioning groove 331. Then, positioning plate 400 is fixed to the inside of cover plate 120, and each wire clip 330 is located in each clearance hole 120 on cover plate 120. Finally, cover plate 120 is fixed to the end of tube body 110.

[0037] Combination Figure 2 In this embodiment, when the electric lifting column 10 is in the retracted state, the threaded section 310 of the cable 300 and the spring 510 are also in the retracted state. Combined with... Figure 9 When the electric lifting column 10 is in the extended state, the threaded section 310 of the cable 300 and the spring 510 are stretched. When the electric lifting column 10 is shortened from the extended state, the released spring 510 returns to its original shape, and the threaded section 310 of the cable 300 also shortens accordingly. The spring 510 guides the threaded section 310 of the cable 300, preventing it from easily tangling together during retraction due to loss of elasticity after repeated extension and contraction. This avoids the cable 300 being unable to extend and retract in a timely manner according to the lifting and lowering of the electric lifting column 10 due to the threaded section 310 of the cable 300 tangling together.

[0038] In other embodiments, the telescopic sleeve 100 may also be configured as a two-section structure or a four-section structure or other reasonable structures. The specific number of tube bodies 110 in the telescopic sleeve 100 is not limited here.

[0039] In other embodiments, the end of the spring 510 can also be positioned and connected to the cable clip 330 of the cable 300 in other ways, such as by engaging the hook 511 with the hole to position the end of the spring 510 to the cable clip 330, or by tightening a screw to the cable clip 330 to position the end of the spring 510 to the cable clip 330. The specific connection method between the end of the spring 510 and the cable clip 330 is not limited here.

[0040] In other embodiments, the end of the spring 510 can also be positioned and connected to the positioning plate 400. Since the end of the cable 300 is positioned and engaged with the positioning plate 400 via the wire clip 330, the end of the spring 510 can be positioned relative to the end of the cable 300, that is, the end of the spring 510 and the end of the cable 300 maintain a relatively fixed positional relationship. Specifically, the positioning plate 400 can have a positioning part on its inner side, and the end of the spring 510 is connected to the positioning plate 400 through the positioning part. Further, the positioning part located on the inner side of the positioning plate 400 can be a protrusion with a hole, and the hook 511 of the spring 510 is connected to the protrusion through the engagement with the hole, thereby positioning and connecting the end of the spring 510 to the positioning plate 400. Of course, the end of the spring 510 can also be positioned and connected to the positioning plate 400 by screws or other means; the specific engagement method between the spring 510 and the positioning plate 400 is not limited here.

[0041] In other embodiments, the positioning plate 400 located at the upper end of the telescopic sleeve 100 is fixed to the inner side of the upper end of the outer tube 113, and the positioning plate 400 located at the lower end of the telescopic sleeve 100 is fixed to the inner side of the bottom cover plate 120. In this case, an avoidance hole is provided at the upper end of the outer tube 113, and the straight segment 320 at the upper end of the cable 300 extends outward from the upper end of the outer tube 113. The positioning plate 400 fixed to the inner side of the upper end of the outer tube 113 is always higher than other tubes to avoid the cable 300 colliding with other tubes when the electric lifting column 10 is raised and lowered.

[0042] In other embodiments, the positioning plate 400 located at the lower end of the telescopic sleeve 100 is fixed to the inner side of the lower end of the inner tube 111, and the positioning plate 400 located at the upper end of the telescopic sleeve 100 is fixed to the inner side of the top cover plate 120. In this case, an avoidance hole is provided at the lower end of the inner tube 111, and the straight segment 320 at the lower end of the cable 300 extends outward from the lower end of the inner tube 111. The positioning plate 400 fixed to the inner side of the lower end of the inner tube 111 is always lower than other tubes to avoid the cable 300 colliding with other tubes when the electric lifting column 10 is raised and lowered.

[0043] In other embodiments, the positioning plate 400 located at the upper end of the telescopic sleeve 100 is fixed to the inner side of the upper end of the outer tube 113, and the positioning plate 400 located at the lower end of the telescopic sleeve 100 is fixed to the inner side of the lower end of the inner tube 111. A clearance hole is provided at the upper end of the outer tube 113, and a clearance hole is also provided at the lower end of the inner tube 111. The straight segment 320 at the upper end of the cable 300 extends outward from the upper end of the outer tube 113, and the straight segment 320 at the lower end of the cable 300 extends outward from the lower end of the inner tube 111. The positioning plate 400 fixed to the inner side of the upper end of the outer tube 113 is always higher than other tubes, and the positioning plate 400 fixed to the inner side of the lower end of the inner tube 111 is always lower than other tubes, preventing the cable 300 from colliding with other tubes when the electric lifting column 10 is raised or lowered.

[0044] In addition to the preferred embodiments described above, there are other embodiments of this utility model. Those skilled in the art can make various changes and modifications based on this utility model. As long as they do not depart from the spirit of this utility model, they should all fall within the scope defined in the claims of this utility model.

Claims

1. An electrically operated lifting column with internal wiring, comprising: Telescopic sleeve, comprising at least two telescopically fitting tube sections together; An electric actuator, which is located inside a telescopic sleeve and configured to drive the telescopic sleeve to extend or retract. A cable, which is disposed within a telescopic sleeve and has a threaded section and a straight section located at at least one end of the threaded section, the straight section extending outward from the end of the telescopic sleeve; The feature is that it further includes a positioning plate and a spring. The cable has a wire clip that is positioned and cooperates with the positioning plate in the straight section. The positioning plate is fixed to the inner side of the end of the telescopic sleeve. The end of the telescopic sleeve has a clearance hole for avoiding the wire clip. At least part of the spring passes through the threaded section of the cable. The two ends of the spring are positioned relative to the two ends of the cable.

2. The electrically operated lifting column with internal wiring as described in claim 1, characterized in that, The circumferential outer wall of the wire clip is provided with a positioning groove, and the positioning plate is provided with a slot with one end open. The wire clip enters from the open end of the slot and the positioning plate is partially embedded in the positioning groove.

3. The electrically operated lifting column with internal wiring according to claim 2, characterized in that, The positioning groove is provided around the circumference of the card.

4. The electrically operated lifting column with internal wiring according to claim 2, characterized in that, The card slots are provided in a parallel and spaced manner.

5. The electrically operated lifting column with internal wiring according to claim 2, characterized in that, The length of the slot is greater than the outer diameter of the wire clip.

6. The electrically operated lifting column with internal wiring according to claim 1, characterized in that, The end of the telescopic sleeve is provided with a cover plate, and a positioning plate is fixed to the inside of the cover plate. The cover plate is provided with a clearance hole for avoiding the wire clamp.

7. The electrically operated lifting column with internal wiring according to claim 1, characterized in that, The end of the spring is positioned and connected to a wire clamp or positioning plate.

8. An electrically operated lifting column with internal wiring as described in claim 7, characterized in that, The outer circumferential wall of the wire clip has a groove located inside the positioning plate, and the end of the spring is positioned and connected to the wire clip by a positioning element that mates with the groove.

9. An electrically operated lifting column with internal wiring as described in claim 7, characterized in that, The positioning plate has a positioning part on its inner side, and the end of the spring is connected to the positioning plate through the positioning part.

10. An electrically operated lifting column with internal wiring as described in claim 1, characterized in that, The electric actuator and the cable are staggered laterally.

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