A lifting table with a two-legged, single-motor, three-section column structure

Abstract

This utility model discloses a height-adjustable desk with a two-legged, single-motor, three-section column structure, comprising: a desktop; column assemblies connected to both sides of the bottom of the desktop; a crossbeam assembly connecting the two column assemblies; and a transmission rod assembly and a drive component. The transmission rod assembly is connected between the two column assemblies, and the drive component uses a single drive motor. The drive motor controls the transmission rod assembly to drive the two column assemblies to rise and fall synchronously, thereby achieving the height adjustment of the desktop. This utility model uses a single motor to drive the transmission rod assembly, which in turn drives the two column assemblies to rise and fall synchronously, thus achieving the height adjustment of the desktop. It eliminates the need for electronic synchronization control programs and complex circuit systems relied upon by traditional height-adjustable desks, significantly reducing hardware costs. The mechanical forced synchronization mechanism ensures a smooth lifting process, avoiding the risk of sudden loss of control or tilting. Furthermore, the mechanical structure is unaffected by electromagnetic interference or program errors, ensuring high stability over long-term use. The modular components allow for quick replacement in case of damage, reducing maintenance costs.

Description

Technical Field

[0001] This utility model belongs to the technical field of lifting table equipment, specifically relating to a lifting table with a two-legged, single-motor, three-section column structure. Background Technology

[0002] An electric height-adjustable desk is a type of desk whose height can be flexibly adjusted to suit the user's height and posture (sitting or standing). Its core structure typically includes a tabletop, a frame beam, legs, and uprights responsible for height adjustment. Each upright is equipped with a motor at its top, which drives a linear lifting mechanism (such as a lead screw assembly) within the upright to rotate, thereby achieving the lifting movement of the upright.

[0003] The height adjustment of this type of height-adjustable desk typically relies on a set of control hardware and software systems to direct the motors and achieve synchronization between the columns. This system mainly refers to the control panel installed on the desktop and its internal circuit control program.

[0004] However, this control method, which relies on additional hardware and software, has some drawbacks: on the one hand, it increases the production cost of the product; on the other hand, the software program is prone to errors, which may lead to control failure and errors in the synchronization rate of the lifting column. Once the program malfunctions or there are installation errors in the lifting column, problems such as desktop tilting or the column getting stuck and unable to rise or fall may occur, posing safety hazards. Utility Model Content

[0005] The purpose of this utility model is to solve the aforementioned technical problems existing in the prior art, and to provide a height-adjustable desk with a two-legged, single-motor, three-section column structure. By setting column assemblies at both ends of the bottom of the desktop, and connecting the two column assemblies with a crossbeam assembly, the stability of the lifting process is increased. A transmission rod assembly and a drive component are set between the two column assemblies. The drive component uses a single drive motor, and the transmission rod assembly is connected to the two column assemblies. The single motor drives the transmission rod assembly, thereby causing the two column assemblies to lift synchronously, achieving the lifting of the desktop. Through the mechanical linkage structure of a single motor driving two columns, the electronic synchronization control program and complex circuit system relied upon by traditional height-adjustable desks are eliminated, significantly reducing hardware costs. The mechanical forced synchronization mechanism ensures a consistently smooth lifting process, avoiding the risk of sudden loss of control or tilting. It is especially suitable for heavy-duty office scenarios, and the mechanical structure is unaffected by electromagnetic interference or program errors, ensuring high stability over long-term use. Furthermore, the use of modular components allows for quick replacement in case of damage, reducing maintenance costs.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A height-adjustable table with a two-legged, single-motor, three-section column structure includes: a tabletop; column assemblies connected to both sides of the bottom of the tabletop; a crossbeam assembly connecting the two column assemblies; and a transmission rod assembly and a drive component. The transmission rod assembly is connected between the two column assemblies, and the drive component uses a single drive motor. The drive motor controls the transmission rod assembly to drive the two column assemblies to rise and fall synchronously, thereby realizing the lifting and lowering of the tabletop. This invention features column assemblies at both ends of the desktop's bottom, connected by a crossbeam assembly to enhance lifting stability. A transmission rod assembly and a drive unit are located between the two column assemblies. The drive unit uses a single drive motor, and the transmission rod assembly connects to both column assemblies. The single motor drives the transmission rod assembly, causing the two column assemblies to lift synchronously, thus achieving desktop height adjustment. This single-motor-driven mechanical linkage structure eliminates the need for electronic synchronization control programs and complex circuit systems found in traditional height-adjustable desks, significantly reducing hardware costs. The forced mechanical synchronization mechanism ensures smooth lifting, preventing sudden loss of control or tilting risks, making it particularly suitable for heavy-duty office scenarios. Furthermore, the mechanical structure is unaffected by electromagnetic interference or program errors, ensuring high long-term stability. The modular components allow for quick replacement in case of damage, reducing maintenance costs.

[0008] Furthermore, a side panel is connected to the top of the column assembly, and the bottom of the desktop is fixedly connected to the column assembly via the side panel; the bottom of the column assembly is connected to feet, and the height-adjustable table is supported on the ground by the feet. The side panel connects and fixes the desktop to the column, and the feet increase the contact area between the column and the ground, thereby improving the stability of the height-adjustable table.

[0009] Furthermore, the crossbeam assembly includes an outer crossbeam tube and an inner crossbeam tube. The two outer crossbeam tubes are fitted onto both ends of the inner crossbeam tube, and the outer crossbeam tubes are connected to the column assembly by bolts. By controlling the extension and retraction of the outer and inner crossbeam tubes, the distance between the two columns can be adjusted. At the same time, the crossbeam assembly connects the two columns, increasing the stability of the lifting table.

[0010] Furthermore, the column assembly includes an inner tube, a middle tube, and an outer tube arranged sequentially from high to low. The inner tube is fitted inside the middle tube, and the middle tube is fitted inside the outer tube. A multi-stage telescopic nested structure of the inner, middle, and outer tubes is adopted, and the three-section lifting of the table is achieved through a screw assembly, improving the lifting adjustment range of the table.

[0011] Furthermore, a lead screw assembly runs through the column assembly. This assembly includes a bevel gear, a lead screw, a lead screw housing, a lead screw nut, a lead screw housing locking element, and a lead screw middle tube. The bevel gear is mounted on the top of the lead screw, and the lead screw nut is connected to the top of the lead screw housing. The lead screw nut and lead screw rotate in engagement. The lead screw housing is fixedly connected to the bottom of the middle tube via the lead screw housing locking element. The middle tube is located between the lead screw and the lead screw housing, at the bottom of the lead screw housing. The bottom of the middle tube is fixedly connected to the bottom of the outer tube via a fixing seat. The drive motor controls the operation of the transmission rod assembly, which in turn controls the bevel gear to rotate the lead screw. Through the lead screw nut, the lead screw housing drives the middle tube to rise and fall. Simultaneously, the middle tube, through the fixing seat, drives the outer tube to rise and fall, thus achieving three-section lifting of the adjustable table.

[0012] Furthermore, a gearbox is also located at the top of the column assembly. The gearbox contains bevel gears with columned bevel teeth. The bevel gears are located within the gearbox, and the columned bevel teeth mesh with the bevel gears. Both ends of the transmission rod assembly are located within the gearbox and connected to the columned bevel teeth. The transmission rod assembly controls the rotation of the columned bevel teeth in both gearboxes, thereby controlling the rotation of the bevel gears, which in turn drives the corresponding lead screws. The gearboxes provide protection for the columned bevel teeth and the bevel gears.

[0013] Furthermore, the transmission rod assembly includes a transmission shaft outer tube, a non-standard transmission shaft one, and a non-standard transmission shaft two. The non-standard transmission shaft one and the non-standard transmission shaft two are respectively connected to the two ends of the transmission shaft outer tube. The drive motor is fixedly connected to the column assembly through a motor fixing component. The output end of the drive motor is connected to a motor head. The motor head is equipped with a non-standard meshing gear. The drive motor controls the rotation of the non-standard meshing gear. The non-standard transmission shaft one passes through the non-standard meshing gear and is located in the gearbox on the corresponding side, connecting with the bevel gear with a column. One end of the non-standard transmission shaft two is located in the gearbox on the corresponding other side, connecting with the bevel gear with a column. The bevel gear with a meshing hole is provided, and the meshing hole is matched with the non-standard transmission shaft one and the non-standard transmission shaft two. The bevel gears are fitted with corresponding holes. The irregularly shaped drive shaft one and irregularly shaped drive shaft two are connected to the corresponding bevel gears through the mating holes. The drive motor controls the irregularly shaped meshing gears to rotate, thereby driving the irregularly shaped drive shaft one to rotate. The irregularly shaped drive shaft one can drive the corresponding bevel gears to rotate. Through the outer tube of the drive shaft, the rotation of the irregularly shaped drive shaft one can drive the rotation of the irregularly shaped drive shaft two, and the irregularly shaped drive shaft two can drive the corresponding bevel gears to rotate.

[0014] Furthermore, the outer tube of the drive shaft has a mating groove on the side near the irregularly shaped drive shaft one, and the irregularly shaped drive shaft one has a corresponding mating key. The mating key is inserted into the mating groove and fixed, so that after the drive motor drives the irregularly shaped drive shaft one to rotate, the irregularly shaped drive shaft one can drive the outer tube of the drive shaft to rotate. The matching setting of the mating key and the mating groove ensures that after the drive motor controls the irregularly shaped drive shaft one to rotate, the irregularly shaped drive shaft one can drive the outer tube of the drive shaft to rotate.

[0015] Furthermore, the outer tube of the drive shaft has a hollow structure. A locking element is located at one end of the outer tube near the second irregularly shaped drive shaft. The other end of the second irregularly shaped drive shaft passes through the locking element and is positioned inside the outer tube, thus securing the second irregularly shaped drive shaft to the outer tube. The hollow structure of the outer tube allows the second irregularly shaped drive shaft to be inserted into it. Combined with the locking element, the length of the drive rod assembly can be adjusted, facilitating the installation of the lifting table.

[0016] Furthermore, the locking component includes a locking head and a locking sleeve. One end of the locking head is fixedly connected to the outer tube of the drive shaft, and the other end of the locking head is provided with an elastic tapered sleeve. The elastic tapered sleeve has an external thread, and the locking sleeve is movably connected to the second irregularly shaped drive shaft. The locking sleeve has an internal thread, and the external thread matches the internal thread. When the outer tube of the drive shaft is fixedly connected to the second irregularly shaped drive shaft, the locking sleeve is tightened onto the elastic tapered sleeve, so that the elastic tapered sleeve clamps the second irregularly shaped drive shaft. The locking head is fixed to the outer tube of the drive shaft, and the second irregularly shaped drive shaft passes through the locking sleeve. After the second irregularly shaped drive shaft is inserted into the outer tube of the drive shaft, the locking sleeve is screwed into the elastic tapered sleeve of the locking head, so that the elastic tapered sleeve clamps onto the second irregularly shaped drive shaft, thereby fixing the outer tube of the drive shaft to the second irregularly shaped drive shaft.

[0017] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0018] This invention features column assemblies at both ends of the desktop's bottom, connected by a crossbeam assembly to enhance lifting stability. A transmission rod assembly and a drive unit are located between the two column assemblies. The drive unit uses a single drive motor, and the transmission rod assembly connects to both column assemblies. The single motor drives the transmission rod assembly, causing the two column assemblies to lift synchronously, thus achieving desktop height adjustment. This single-motor-driven mechanical linkage structure eliminates the need for electronic synchronization control programs and complex circuit systems found in traditional height-adjustable desks, significantly reducing hardware costs. The forced mechanical synchronization mechanism ensures smooth lifting, preventing sudden loss of control or tilting risks, making it particularly suitable for heavy-duty office scenarios. Furthermore, the mechanical structure is unaffected by electromagnetic interference or program errors, ensuring high long-term stability. The modular components allow for quick replacement in case of damage, reducing maintenance costs.

[0019] This utility model features a lead screw assembly running through the central column assembly. The lead screw assembly includes a bevel gear, a lead screw, a lead screw housing, a lead screw nut, a lead screw housing locking element, and a lead screw middle tube. The bevel gear is mounted on the top of the lead screw, and the lead screw nut is connected to the top of the lead screw housing. The lead screw nut and lead screw are rotatably engaged. The lead screw housing is fixedly connected to the bottom of the middle tube via the lead screw housing locking element. The middle tube is located between the lead screw and the lead screw housing, at the bottom of the lead screw housing. The bottom of the middle tube is fixedly connected to the bottom of the outer tube via a fixing seat. A drive motor controls the operation of the transmission rod assembly, which in turn controls the bevel gear to rotate the lead screw. Through the lead screw nut, the lead screw housing drives the middle tube to rise and fall. Simultaneously, the middle tube, through the fixing seat, drives the outer tube to rise and fall, thus achieving three-section lifting of the lifting table.

[0020] In this utility model, the transmission rod assembly includes a transmission shaft outer tube, a first irregular transmission shaft, and a second irregular transmission shaft. The first irregular transmission shaft and the second irregular transmission shaft are respectively connected to the two ends of the transmission shaft outer tube. The drive motor is fixedly connected to the column assembly through a motor fixing component. The output end of the drive motor is connected to a motor head. An irregular meshing gear is provided inside the motor head. The drive motor controls the rotation of the irregular meshing gear. The first irregular transmission shaft passes through the irregular meshing gear and is located in the gearbox on the corresponding side, connecting with the bevel gear with a column. One end of the second irregular transmission shaft is located in the gearbox on the corresponding other side, connecting with the bevel gear with a column. The bevel gear with a mating hole is provided, and the mating hole is matched with the first irregular transmission shaft and the second irregular transmission shaft. The bevel gears are fitted with corresponding holes. The irregularly shaped drive shaft one and irregularly shaped drive shaft two are connected to the corresponding bevel gears through the mating holes. The drive motor controls the irregularly shaped meshing gears to rotate, thereby driving the irregularly shaped drive shaft one to rotate. The irregularly shaped drive shaft one can drive the corresponding bevel gears to rotate. Through the outer tube of the drive shaft, the rotation of the irregularly shaped drive shaft one can drive the rotation of the irregularly shaped drive shaft two, and the irregularly shaped drive shaft two can drive the corresponding bevel gears to rotate. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] Figure 1 This is a structural diagram of a lifting table with a two-legged, single-motor, three-section column structure according to the present invention.

[0023] Figure 2 This is a schematic diagram of the connection between the column assembly and the beam assembly in this utility model;

[0024] Figure 3 for Figure 2 An explosion diagram;

[0025] Figure 4 for Figure 3 The enlarged structure at point A in the middle;

[0026] Figure 5 for Figure 3 The enlarged structure at point B;

[0027] Figure 6 This is a schematic diagram of the lead screw assembly in this utility model;

[0028] Figure 7 This is a schematic diagram of the transmission rod assembly in this utility model.

[0029] In the diagram, 1-desktop; 2-column assembly; 3-crossbeam assembly; 4-drive rod assembly; 5-drive motor; 6-side plate; 7-foot; 8-crossbeam outer tube; 9-crossbeam inner tube; 10-inner tube; 11-middle tube; 12-outer tube; 13-lead screw assembly; 14-bevel gear; 15-lead screw; 16-lead screw housing; 17-lead screw nut; 18-lead screw housing locking component; 19-lead screw middle tube ; 20-Fixed base; 21-Gearbox; 22-Bevel gear with column; 23-Outer tube of drive shaft; 24-Irregular drive shaft one; 25-Irregular drive shaft two; 26-Motor fixing part; 27-Motor head; 28-Irregular meshing gear; 29-Mating hole; 30-Mating groove; 31-Mating key; 32-Locking part; 33-Locking head; 34-Locking sleeve; 35-Elastic tapered sleeve; 36-External thread. Detailed Implementation

[0030] like Figures 1 to 7 As shown, this utility model discloses a lifting table with a two-legged, single-motor, three-section column structure, including: a tabletop 1; column assemblies 2 connected to both sides of the bottom of the tabletop 1; a crossbeam assembly 3 connecting the two column assemblies 2; and a transmission rod assembly 4 and a driving component. The transmission rod assembly 4 is connected between the two column assemblies 2. The driving component uses a single drive motor 5. The drive motor 5 controls the transmission rod assembly 4 to drive the two column assemblies 2 to lift and lower synchronously, thereby realizing the lifting and lowering of the tabletop 1.

[0031] The top of the column assembly 2 is connected to a side plate 6, and the bottom of the desktop 1 is fixedly connected to the column assembly 2 via the side plate 6. The bottom of the column assembly 2 is connected to a foot 7, and the height-adjustable table is supported on the ground via the foot 7. The side plate 6 connects and fixes the desktop 1 to the column, and the foot 7 increases the contact area between the column and the ground, thereby improving the stability of the height-adjustable table.

[0032] The crossbeam assembly 3 includes an outer crossbeam tube 8 and an inner crossbeam tube 9. The two outer crossbeam tubes 8 are sleeved at both ends of the inner crossbeam tube 9. The outer crossbeam tubes 8 are connected to the column assembly 2 by bolts. By controlling the extension and retraction of the outer crossbeam tubes 8 and the inner crossbeam tubes 9, the distance between the two columns can be adjusted. At the same time, the crossbeam assembly 3 connects the two columns, increasing the stability of the lifting table.

[0033] The column assembly 2 includes an inner tube 10, a middle tube 11, and an outer tube 12 arranged sequentially from high to low. The inner tube 10 is fitted inside the middle tube 11, and the middle tube 11 is fitted inside the outer tube 12. A multi-stage telescopic nested structure of the inner tube 10, middle tube 11, and outer tube 12 is adopted, and the three-section lifting of the table is achieved through a screw assembly, thereby improving the lifting adjustment range of the table.

[0034] A lead screw assembly 13 runs through the column assembly 2. The lead screw assembly 13 includes a bevel gear 14, a lead screw 15, a lead screw housing 16, a lead screw nut 17, a lead screw housing locking member 18, and a lead screw middle tube 19. The bevel gear 14 is installed on the top of the lead screw 15. The lead screw nut 17 is connected to the top of the lead screw housing 16 and is rotatably engaged with the lead screw 15. The lead screw housing 16 is fixedly connected to the bottom of the middle tube 11 through the lead screw housing locking member 18. The lead screw middle tube 19 is located between the lead screw 15 and the lead screw housing 16 and is located at the bottom of the lead screw housing 16. The bottom of the lead screw middle tube 19 is fixedly connected to the bottom of the outer tube 12 through a fixing seat 20. The drive motor 5 controls the operation of the transmission rod assembly 4, which in turn controls the bevel gear 14 to drive the lead screw 15 to rotate. Through the lead screw nut 17, the lead screw housing 16 is controlled to drive the middle tube 11 to rise and fall. At the same time, the lead screw middle tube 19 drives the outer tube 12 to rise and fall through the fixed seat 20, thus realizing the three-section lifting of the lifting table.

[0035] The top of the column assembly 2 is also equipped with a gearbox 21, which contains a bevel gear 22 with a column. A bevel gear 14 is located within the gearbox 21, and the column bevel gear 22 meshes with the bevel gear 14. Both ends of the transmission rod assembly 4 are located within the gearbox 21 and connected to the column bevel gear 22. The transmission rod assembly 4 controls the rotation of the column bevel gear 22 within the two gearboxes 21, thereby controlling the rotation of the bevel gear 14, which in turn drives the corresponding lead screw 15 to rotate. The gearbox 21 provides protection for the column bevel gear 22 and the bevel gear 14.

[0036] The transmission rod assembly 4 includes a transmission shaft outer tube 23, a non-standard transmission shaft one 24, and a non-standard transmission shaft two 25. The non-standard transmission shaft one 24 and the non-standard transmission shaft two 25 are respectively connected to the two ends of the transmission shaft outer tube 23. The drive motor 5 is fixedly connected to the column assembly 2 via a motor fixing component 26. The output end of the drive motor 5 is connected to a motor head 27. The motor head 27 is provided with a non-standard meshing gear 28. The drive motor 5 controls the rotation of the non-standard meshing gear 28. The non-standard transmission shaft one 24 passes through the non-standard meshing gear 28 and is located in the gearbox 21 on the corresponding side, connecting with the column bevel gear 22. One end of the non-standard transmission shaft two 25 is located in the gearbox 21 on the corresponding other side, connecting with the column bevel gear 22. The column bevel gear 22 is provided with a mating hole 29, which is matched with the non-standard transmission shaft one 24 and the non-standard transmission shaft two 25. The bevel gear 22 with a column is provided with a corresponding mating hole 29. The irregular drive shaft 1 24 and irregular drive shaft 25 are connected to the corresponding bevel gear 22 through the mating holes 29. The drive motor 5 controls the irregular meshing gear 28 to rotate, thereby driving the irregular drive shaft 1 24 to rotate. The irregular drive shaft 1 24 can drive the corresponding bevel gear 22 to rotate. Through the outer tube 23 of the drive shaft, the rotation of the irregular drive shaft 1 24 can drive the rotation of the irregular drive shaft 25. The irregular drive shaft 25 drives the corresponding bevel gear 22 to rotate.

[0037] The outer tube 23 of the drive shaft has a mating groove 30 on the side near the irregularly shaped drive shaft 24. The irregularly shaped drive shaft 24 has a corresponding mating key 31. The mating key 31 is inserted into the mating groove 30 and fixed, so that after the drive motor 5 drives the irregularly shaped drive shaft 24 to rotate, the irregularly shaped drive shaft 24 can drive the outer tube 23 of the drive shaft to rotate. The matching arrangement of the mating key 31 and the mating groove 30 ensures that after the drive motor 5 controls the irregularly shaped drive shaft 24 to rotate, the irregularly shaped drive shaft 24 can drive the outer tube 23 of the drive shaft to rotate.

[0038] The outer tube 23 of the drive shaft has a hollow structure. A locking element 32 is located at one end of the outer tube 23 near the irregularly shaped drive shaft 25. The other end of the irregularly shaped drive shaft 25 passes through the locking element 32 and is positioned inside the outer tube 23, thus fixing the irregularly shaped drive shaft 25 to the outer tube 23. The hollow structure of the outer tube 23 allows the irregularly shaped drive shaft 25 to be inserted into it. Combined with the locking element 32, the length of the drive rod assembly 4 can be adjusted, facilitating the installation of the lifting table.

[0039] The locking component 32 includes a locking head 33 and a locking sleeve 34. One end of the locking head 33 is fixedly connected to the outer tube 23 of the drive shaft, and the other end of the locking head 33 is provided with an elastic tapered sleeve 35. The elastic tapered sleeve 35 is provided with an external thread 36. The locking sleeve 34 is movably connected to the irregular drive shaft 25. The locking sleeve 34 is provided with an internal thread, and the external thread 36 matches the internal thread. When the outer tube 23 of the drive shaft is fixedly connected to the irregular drive shaft 25, the locking sleeve 34 is tightened on the elastic tapered sleeve 35, so that the elastic tapered sleeve 35 clamps the irregular drive shaft 25. The locking head 33 is fixed on the outer tube 23 of the drive shaft. The irregularly shaped drive shaft 25 passes through the locking sleeve 34. After the irregularly shaped drive shaft 25 is inserted into the outer tube 23 of the drive shaft, the locking sleeve 34 is screwed into the elastic cone sleeve 35 of the locking head 33, so that the elastic cone sleeve 35 is locked on the irregularly shaped drive shaft 25, thereby fixing the outer tube 23 of the drive shaft and the irregularly shaped drive shaft 25.

[0040] This invention increases the stability of lifting by setting column assemblies 2 at both ends of the bottom of the desktop 1, and connecting the two column assemblies 2 with a crossbeam assembly 3. A transmission rod assembly 4 and a drive component are set between the two column assemblies 2. The drive component uses a single drive motor 5. The transmission rod assembly 4 is connected to the two column assemblies 2. The transmission rod assembly 4 is driven by a single motor to drive the transmission rod assembly 4, thereby driving the two column assemblies 2 to lift synchronously, realizing the lifting of the desktop 1. The mechanical linkage structure of driving the two columns with a single motor eliminates the need for electronic synchronization control programs and complex circuit systems that traditional height-adjustable desks rely on, greatly reducing hardware costs. The mechanical forced synchronization mechanism ensures that the lifting process is always smooth, avoiding the risk of sudden loss of control or tilting. It is especially suitable for heavy-load office scenarios. Moreover, the mechanical structure is not affected by electromagnetic interference or program errors, and has high stability in long-term use. At the same time, the use of modular components allows for quick replacement when damaged, reducing maintenance costs.

[0041] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A height-adjustable table with a two-legged, single-motor, three-section column structure, comprising: desktop; The column assembly is connected to both sides of the bottom of the desktop. A crossbeam assembly connects the two aforementioned column assemblies; Its features are: It also includes a transmission rod assembly and a drive component. The transmission rod assembly is connected between the two column assemblies. The drive component uses a single drive motor. The drive motor controls the transmission rod assembly to drive the two column assemblies to rise and fall synchronously, so as to realize the raising and lowering of the desktop.

2. The lift table of claim 1, wherein: The top of the column assembly is connected to a side panel, and the bottom of the desktop is fixedly connected to the column assembly through the side panel; the bottom of the column assembly is connected to a foot, and the lifting table is supported on the ground by the foot.

3. The lifting table with a two-legged, single-motor, three-section column structure according to claim 1, characterized in that: The crossbeam assembly includes an outer crossbeam tube and an inner crossbeam tube. The two outer crossbeam tubes are sleeved at both ends of the inner crossbeam tube, and the outer crossbeam tubes are connected to the column assembly by bolts.

4. The lifting table with a two-legged, single-motor, three-section column structure according to claim 1, characterized in that: The column assembly includes an inner tube, a middle tube, and an outer tube arranged in descending order of height. The inner tube is fitted inside the middle tube, and the middle tube is fitted inside the outer tube.

5. A lifting table with a two-legged, single-motor, three-section column structure according to claim 4, characterized in that: A lead screw assembly runs through the column assembly. The lead screw assembly includes a bevel gear, a lead screw, a lead screw housing, a lead screw nut, a lead screw housing locking member, and a lead screw middle tube. The bevel gear is mounted on the top of the lead screw. The lead screw nut is connected to the top of the lead screw housing and is rotatably engaged with the lead screw. The lead screw housing is fixedly connected to the bottom of the middle tube by the lead screw housing locking member. The lead screw middle tube is located between the lead screw and the lead screw housing, at the bottom of the lead screw housing. The bottom of the lead screw middle tube is fixedly connected to the bottom of the outer tube by a fixing seat.

6. A lifting table with a two-legged, single-motor, three-section column structure according to claim 5, characterized in that: The top of the column assembly is also provided with a gearbox, and the gearbox is provided with a bevel gear with a column. The bevel gear is located in the gearbox and the bevel gear with the column meshes with the bevel gear. Both ends of the transmission rod assembly are located in the gearbox and connected to the bevel gear with the column.

7. A lifting table with a two-legged, single-motor, three-section column structure according to claim 6, characterized in that: The transmission rod assembly includes a transmission shaft outer tube, a first irregular transmission shaft, and a second irregular transmission shaft. The first irregular transmission shaft and the second irregular transmission shaft are respectively connected to the two ends of the transmission shaft outer tube. The drive motor is fixedly connected to the column assembly through a motor fixing component. The output end of the drive motor is connected to a motor head. An irregular meshing gear is provided inside the motor head. The drive motor controls the rotation of the irregular meshing gear. The first irregular transmission shaft passes through the irregular meshing gear and is located in the gearbox on the corresponding side, connecting with the bevel gear with a column. One end of the second irregular transmission shaft is located in the gearbox on the corresponding other side, connecting with the bevel gear with a column. The bevel gear with a column has a mating hole, which is matched with the first irregular transmission shaft and the second irregular transmission shaft.

8. A lifting table with a two-legged, single-motor, three-section column structure according to claim 7, characterized in that: The outer tube of the drive shaft is provided with a mating groove on the side near the irregular drive shaft one, and the irregular drive shaft one is provided with a corresponding mating key. The mating key is inserted into the mating groove and fixed, so that after the drive motor drives the irregular drive shaft one to rotate, the irregular drive shaft one can drive the outer tube of the drive shaft to rotate.

9. A lifting table with a two-legged, single-motor, three-section column structure according to claim 7, characterized in that: The outer tube of the drive shaft is a hollow structure. A locking member is provided at one end of the outer tube of the drive shaft near the second irregular drive shaft. The other end of the second irregular drive shaft passes through the locking member and is located inside the outer tube of the drive shaft. The locking member fixes the second irregular drive shaft to the outer tube of the drive shaft.

10. A lifting table with a two-legged, single-motor, three-section column structure according to claim 9, characterized in that: The locking component includes a locking head and a locking sleeve. One end of the locking head is fixedly connected to the outer tube of the drive shaft, and the other end of the locking head is provided with an elastic tapered sleeve. The elastic tapered sleeve is provided with an external thread. The locking sleeve is movably connected to the second irregular drive shaft and is provided with an internal thread. The external thread matches the internal thread. When the outer tube of the drive shaft is fixedly connected to the second irregular drive shaft, the locking sleeve is tightened on the elastic tapered sleeve, so that the elastic tapered sleeve locks the second irregular drive shaft.

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