A novel lifting support structure

Abstract

This utility model relates to the field of height-adjustable desk technology, and more particularly to a novel height-adjustable support structure, including a base, height-adjustable columns, a power mechanism, and a support frame. Two height-adjustable columns are arranged opposite each other and are respectively mounted on two bases. The support frame is mounted on the height-adjustable columns and is driven to move by the power mechanism. Each height-adjustable column includes an inner branch pipe, an outer branch pipe, and a transmission assembly. The outer branch pipe is sleeved on and slidably connected to the inner branch pipe, and is connected to the inner branch pipe through the transmission assembly. The transmission assembly provides kinetic energy through the power mechanism. Synchronous height-adjustment of the two columns is achieved by a single motor working in conjunction with a rigid transmission shaft, replacing the redundant mechanism design of dual-motor drive. The single motor, in conjunction with the transmission shaft and coupling, powers the transmission assembly in the two height-adjustable columns, enabling synchronous height-adjustment and avoiding the impact of performance differences between the two motors on the synchronous drive accuracy.

Description

Technical Field

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

[0002] With the growing popularity of healthy office practices, height-adjustable desks have become a mainstream solution for improving sedentary lifestyles due to their height-adjustable flexibility. Most current power-adjustable desks on the market employ a dual-motor drive architecture, where each of the two support legs integrates an independent motor, a reduction gearbox, and a height-adjusting support assembly (such as a lead screw or linkage mechanism). This architecture uses a controller to synchronize the signals from both motors, driving the desk to rise and fall.

[0003] However, in practical applications, dual-motor height-adjustable desks suffer from asynchronous lifting processes. Slight differences in the performance parameters of the two motors can cause the desk to tilt or jam, necessitating complex closed-loop control algorithms to compensate for these errors. This undoubtedly increases the design difficulty and cost of the control board. Furthermore, the currently used height-adjustable desk leg structure suffers from cramped internal space in the motor housing, and the stacked design of the motor, gearbox, and lifting mechanism complicates production and assembly. Utility Model Content

[0004] The purpose of this invention is to provide a new type of lifting support structure to address the shortcomings of existing technologies and enable label wrapping application.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A novel lifting support structure includes: a base, lifting columns, a power mechanism, and a support frame. Two lifting columns are arranged opposite each other and are respectively mounted on the two bases. The support frame is mounted on the lifting columns and is driven to move by the power mechanism.

[0007] The lifting column includes an inner branch pipe, an outer branch pipe, and a transmission assembly. The outer branch pipe is sleeved on the inner branch pipe and slidably connected to it. The outer branch pipe is connected to the inner branch pipe through the transmission assembly, and the transmission assembly provides kinetic energy through the power mechanism.

[0008] Furthermore, the transmission assembly includes a mechanism box, a transmission gear set, a lead screw, and a threaded sleeve. The transmission gear set is disposed in the mechanism box and is respectively connected to the power mechanism and the lead screw. The threaded sleeve is screwed to the lead screw.

[0009] The power mechanism is fixedly connected to the core box, the core box is fixedly connected to the outer branch pipe, and the threaded sleeve is fixedly connected to the inner branch pipe through a fixing sheet metal.

[0010] Furthermore, the transmission gear set includes a long gear and a short gear that mesh with each other, both of which are bevel gears and whose rotation axes are perpendicular to each other;

[0011] The power mechanism drives the long gear to rotate via a drive shaft, and the short gear is coaxially arranged with the lead screw, and the two rotate synchronously.

[0012] Furthermore, the long gear includes a support bushing and a drive gear fitted thereon. The support bushing is rotatably connected to the movement box via a first washer fitted thereon. The support bushing is fitted on the drive shaft and rotates synchronously with it.

[0013] Furthermore, the movement box includes a front movement box and a rear movement box, and two first washers are symmetrically arranged at both ends of the length of the support bushing, and are respectively installed on the front movement box and the rear movement box.

[0014] Furthermore, the short gear is rotatably connected to the mechanism box via a bearing, and a second washer is fitted on the top of the lead screw. The short gear and the second washer abut against the upper and lower sides of the bearing, respectively.

[0015] Furthermore, a limiting part, a positioning part, and a mounting part are sequentially provided along the axial direction at the top end of the lead screw; the short gear is sleeved on the limiting part; and the second washer is sleeved on the positioning part.

[0016] The short gear is pressed onto the top of the lead screw by a first screw, which is threaded into the limiting part. A buffer washer is provided on the outer ring of the mounting part.

[0017] Furthermore, the power mechanism includes a motor, a coupling, and a transmission shaft. The motor drives the drive shaft to rotate, and the two drive shafts of the two lifting columns are respectively connected to the two ends of the transmission shaft through the coupling.

[0018] The beneficial effects of this utility model are as follows:

[0019] This application discloses a novel lifting drive mechanism structure, which achieves synchronous lifting of two columns through a single motor and a rigid transmission shaft, replacing the redundant mechanism design of dual-motor drive; by using a single motor in conjunction with the transmission shaft and coupling to transmit power to the transmission components in the two lifting columns, the two lifting columns can be lifted synchronously, avoiding the impact of the performance difference of the two motors on the synchronous drive accuracy. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the novel lifting support structure in this utility model;

[0022] Figure 2 This is an exploded view of the novel lifting support structure of this utility model;

[0023] Figure 3 This is an exploded view of the lifting column in this utility model;

[0024] Figure 4 This is an exploded view of the transmission components inside the mechanism box in this utility model;

[0025] Figure 5 This is a cross-sectional view of the mechanism box in this utility model.

[0026] Reference numerals: 1. Base; 2. Lifting column; 21. Inner branch pipe; 211. Fixing sheet metal; 22. Outer branch pipe; 23. Transmission assembly; 24. Mechanism box; 241. Front mechanism box; 242. Rear mechanism box; 243. First washer; 244. Bearing; 245. Second washer; 246. First screw; 247. Buffer washer; 25. Transmission gear set; 251. Long gear; 251a. Support bushing; 251b. Drive gear; 252. Short gear; 26. Lead screw; 261. Limiting part; 262. Positioning part; 263. Mounting part; 27. Threaded sleeve; 28. Drive shaft; 3. Power mechanism; 31. Motor; 32. Coupling; 33. Transmission shaft; 4. Support frame. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] This application discloses a novel lifting mechanism structure that achieves synchronous lifting of two columns through a single motor 31 in conjunction with a rigid transmission shaft 33, replacing the redundant mechanism design driven by two motors 31; Figures 1 to 5 The novel lifting support structure shown includes a base 1, a lifting column 2, a power mechanism 3, and a support frame 4. There are two lifting columns 2 arranged opposite each other and respectively mounted on the two bases 1. The support frame 4 is mounted on the lifting column 2 and is driven to move by the power mechanism 3. The lifting column 2 includes an inner branch pipe 21, an outer branch pipe 22, and a transmission assembly 23. The outer branch pipe 22 is sleeved on the inner branch pipe 21 and slidably connected to it. The outer branch pipe 22 is connected to the inner branch pipe 21 through the transmission assembly 23. The transmission assembly 23 provides kinetic energy through the power mechanism 3.

[0031] like Figure 1 and Figure 2 As shown, there are two symmetrically arranged bases 1 for fixing two symmetrically arranged lifting columns 2. The support frame 4 is used to install the desktop and is fixed across the top of the two lifting columns 2. The two lifting columns 2 are driven synchronously by the power mechanism 3. Specifically, the power mechanism 3 drives the outer branch pipe 22 to rise and fall through the transmission assembly 23, which in turn drives the support frame 4 fixed on it to rise and fall.

[0032] In this embodiment, as Figure 3 and Figure 4 As shown, the transmission assembly 23 includes a core box 24, a transmission gear set 25, a lead screw 26, and a threaded sleeve 27. The transmission gear set 25 is disposed inside the core box 24 and is connected to the power mechanism 3 and the lead screw 26 respectively. The threaded sleeve 27 is screwed to the lead screw 26. The power mechanism 3 is fixedly connected to the core box 24. The core box 24 is fixedly connected to the outer branch pipe 22. The threaded sleeve 27 is fixedly connected to the inner branch pipe 21 through a fixing sheet metal 211.

[0033] The transmission gear set 25 includes a long gear 251 and a short gear 252 that mesh with each other. Both the long gear 251 and the short gear 252 are bevel gears and their rotation axes are perpendicular to each other. The power mechanism 3 drives the long gear 251 to rotate through the drive shaft 28. The short gear 252 is coaxially arranged with the lead screw 26 and the two rotate synchronously.

[0034] The power mechanism 3 includes a motor 31, a coupling 32, and a drive shaft 33. The motor 31 drives the drive shaft 28 to rotate. The two drive shafts 28 of the two lifting columns 2 are respectively connected to the two ends of the drive shaft 33 through the coupling 32. By using a single motor 31 in conjunction with the drive shaft 33 and the coupling 32 to synchronously drive the drive shafts 28 of the two lifting columns 2, the two lifting columns 2 can be raised and lowered synchronously, avoiding the impact of the performance difference of the two motors 31 on the synchronous drive accuracy.

[0035] In the specific driving process of the lifting column 2, the motor 31 drives the long gear 251 to rotate through the drive shaft 28, and drives the short gear 252 to rotate through the long gear 251. In the process, the horizontal rotational kinetic energy provided by the motor 31 is converted into vertical rotational kinetic energy. Then, the short gear 252 drives the lead screw 26, which is coaxially arranged with it, to rotate. The rotational kinetic energy of the lead screw 26 is converted into the displacement kinetic energy of the threaded sleeve 27 in the length direction of the lead screw 26 through the threaded sleeve 27 sleeved on the lead screw 26. Finally, the threaded sleeve 27 drives the outer branch pipe 22 to slide relative to the inner branch pipe 21.

[0036] Further, see Figure 4 As shown, the long gear 251 includes a support bushing 251a and a drive gear 251b fitted thereon. The support bushing 251a is rotatably connected to the movement box 24 via a first washer 243 fitted thereon. The support bushing 251a is fitted onto the drive shaft 28 and rotates synchronously with it. The movement box 24 includes a front movement box 241 and a rear movement box 242. Two first washers 243 are symmetrically arranged at both ends of the length of the support bushing 251a and are respectively installed on the front movement box 241 and the rear movement box 242.

[0037] The mechanism box 24 adopts a split structure design, which facilitates the assembly of the transmission component 23. The support bushing 251a of the long gear 251 is installed in the mechanism box 24 through the first washers 243 at both ends of its length, so that the long gear 251 is stably assembled with the mechanism box 24 and further ensures the stability of the driving process of the long gear 251.

[0038] Furthermore, the short gear 252 is rotatably connected to the mechanism box 24 via the bearing 244. A second washer 245 is fitted onto the top of the lead screw 26, and the short gear 252 and the second washer 245 abut against the upper and lower sides of the bearing 244, respectively. The short gear 252 is rotatably connected to the mechanism box 24 via the bearing 244. A limiting part 261, a positioning part 262, and a mounting part 263 are sequentially arranged along the axial direction at the top of the lead screw 26. The short gear 252 is fitted onto the limiting part 261, and the second washer 245 is fitted onto the positioning part 262. The short gear 252 is pressed onto the top of the lead screw 26 by a first screw 246, which is threaded into the limiting part 261. A buffer washer 247 is fitted onto the outer ring of the mounting part 263.

[0039] The first screw 246 presses the short gear 252 and the bearing 244 onto the top of the lead screw 26. The short gear 252 drives the lead screw 26 to rotate, and the bearing 244 ensures that the short gear 252 drives the lead screw 26 to rotate smoothly.

[0040] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A novel lifting support structure, characterized in that, include: The base (1), lifting column (2), power mechanism (3) and support frame (4) are provided. There are two lifting columns (2) arranged opposite each other and respectively on the two bases (1). The support frame (4) is arranged on the lifting column (2) and is driven to move by the power mechanism (3). The lifting column (2) includes an inner branch pipe (21), an outer branch pipe (22) and a transmission assembly (23). The outer branch pipe (22) is sleeved on the inner branch pipe (21) and slidably connected to it. The outer branch pipe (22) is connected to the inner branch pipe (21) through the transmission assembly (23). The transmission assembly (23) provides kinetic energy through the power mechanism (3).

2. The novel lifting support structure according to claim 1, characterized in that, The transmission assembly (23) includes a mechanism box (24), a transmission gear set (25), a lead screw (26), and a threaded sleeve (27). The transmission gear set (25) is disposed in the mechanism box (24) and is respectively connected to the power mechanism (3) and the lead screw (26). The threaded sleeve (27) is screwed to the lead screw (26). The power mechanism (3) is fixedly connected to the core box (24), the core box (24) is fixedly connected to the outer branch pipe (22), and the threaded sleeve (27) is fixedly connected to the inner branch pipe (21) through the fixed sheet metal (211).

3. The novel lifting support structure according to claim 2, characterized in that, The transmission gear set (25) includes a long gear (251) and a short gear (252) that mesh with each other. Both the long gear (251) and the short gear (252) are bevel gears and their rotation axes are perpendicular to each other. The power mechanism (3) drives the long gear (251) to rotate via the drive shaft (28), and the short gear (252) is coaxially arranged with the lead screw (26) and the two rotate synchronously.

4. The novel lifting support structure according to claim 3, characterized in that, The long gear (251) includes a support bushing (251a) and a drive gear (251b) sleeved thereon. The support bushing (251a) is rotatably connected to the movement box (24) through a first washer (243) sleeved thereon. The support bushing (251a) is sleeved on the drive shaft (28) and rotates synchronously with it.

5. The novel lifting support structure according to claim 4, characterized in that, The movement box (24) includes a front movement box (241) and a rear movement box (242). Two first washers (243) are symmetrically arranged at both ends of the length of the support bushing (251a) and are respectively installed on the front movement box (241) and the rear movement box (242).

6. The novel lifting support structure according to claim 3, characterized in that, The short gear (252) is rotatably connected to the mechanism box (24) via a bearing (244). A second washer (245) is fitted on the top of the lead screw (26). The short gear (252) and the second washer (245) abut against the upper and lower sides of the bearing (244) respectively.

7. The novel lifting support structure according to claim 6, characterized in that, A limiting part (261), a positioning part (262) and a mounting part (263) are sequentially provided along the axial direction at the top end of the lead screw (26). The short gear (252) is sleeved on the limiting part (261), and the second washer (245) is sleeved on the positioning part (262). The short gear (252) is pressed into the top of the lead screw (26) by a first screw (246), the first screw (246) is threaded into the limiting part (261), and a buffer washer (247) is provided on the outer ring of the mounting part (263).

8. The novel lifting support structure according to claim 3, characterized in that, The power mechanism (3) includes a motor (31), a coupling (32) and a transmission shaft (33). The motor (31) drives the drive shaft (28) to rotate. The two drive shafts (28) of the two lifting columns (2) are respectively connected to the two ends of the transmission shaft (33) through the coupling (32).

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