Lifting structure of lifting table

Abstract

The utility model relates to a lifting structure of a lifting table. The lifting structure comprises supporting legs, a lifting table frame and a lifting driving mechanism. The lifting driving mechanism is composed of a driving motor, a driving rod, a gearbox, a lifting screw, a screw block and the like. Through grooves are formed in the supporting legs, long fixing grooves are formed in the outer walls of the through grooves, positioning sliding grooves are formed in the inner walls of the through grooves, the screw blocks are provided with corresponding structures, the positioning sliding blocks are in extrusion sliding fit with the positioning sliding grooves, and elastic rubber pads with protruding points are arranged in the positioning sliding grooves. The outer ring of the screw hole in the middle of the screw block is provided with a leftover concave surface and reinforcing ribs. The structure has the advantages that the screw blocks are convenient to install, the height of the table plate can be flexibly adjusted, the production precision requirement and cost are reduced, the operation stability and reliability are enhanced, noise is reduced, and the performance and user experience of the lifting table are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of height-adjustable desk technology, specifically a height-adjustable desk lifting structure. Background Technology

[0002] In modern office and living environments, height-adjustable desks are widely used because they can meet the needs of people in different working postures and usage scenarios. However, traditional height-adjustable desks have some limitations in design and function due to their lifting structure.

[0003] Traditional height-adjustable desks typically employ fixed connection methods to achieve tabletop height adjustment. For example, in some common designs, the connection position between the screw block and the support leg is relatively fixed, requiring extremely high precision in the screw block installation position during production. To ensure the normal operation of the desk, significant effort must be invested in processing and assembly to guarantee that the dimensional tolerances of each component are within a very small range, undoubtedly increasing production costs and complexity. Furthermore, because this fixed connection method is difficult to adjust, it does not allow for convenient and free adjustment of the screw block height, failing to meet diverse user needs and limiting the applicability and user experience of the desk.

[0004] Furthermore, during the installation of screw blocks, due to the lack of effective positioning and auxiliary structures, workers often need to hold the screw blocks by hand and carefully install them into the designated position. This operation is cumbersome and prone to errors, further reducing production efficiency and increasing installation costs.

[0005] In summary, existing height-adjustable desk lifting structures have many shortcomings in terms of screw block positioning and installation, screw block height adjustment flexibility, and production cost control. Therefore, it is necessary to develop a new height-adjustable desk lifting structure to overcome these problems. Utility Model Content

[0006] In view of the shortcomings of the prior art, this utility model provides a lifting structure for a height-adjustable table.

[0007] The technical solution adopted by this utility model is: a lifting structure for a height-adjustable desk, including a support leg, a height-adjustable desk frame, and a height-adjustable drive mechanism. The height-adjustable drive mechanism includes a drive motor, a drive rod driven and connected to the drive motor, a gearbox driven and connected to both ends of the drive rod, a lifting screw connected to the output end of the gearbox, and a screw block screwed to the lifting screw. The support leg has a through groove for the screw block to be embedded. The outer wall of the through groove is provided with a fixed elongated groove, and the inner wall of the through groove is provided with a positioning slide groove. The outer wall of the screw block is provided with a fixing hole corresponding to the fixed elongated groove and a positioning slider corresponding to the positioning elongated groove. The bottom of the positioning slider has a guide slope, and the positioning protrusion and the positioning slide groove adopt a pressing sliding fit.

[0008] Furthermore, the slope of the guide ramp is 15-30 degrees.

[0009] Furthermore, an elastic rubber pad is adhered inside the positioning groove.

[0010] Furthermore, the surface of the elastic rubber pad has several protrusions.

[0011] Furthermore, the screw block has a screw hole in the middle that is threadedly connected to the lifting screw, and the outer ring of the screw hole is provided with a residual material concave surface, and the residual material concave surface is provided with annular reinforcing ribs and straight reinforcing ribs.

[0012] Furthermore, the lifting table frame includes two support rods and a support plate fixed to both ends of the two support rods. A fixing frame is fixed to the support plate between the two support rods by bolts. A motor bracket is fixed to the end of the fixing frame by bolts. The drive motor is fixed on the motor bracket. The motor bracket is provided with a through hole for the drive rod to pass through.

[0013] The beneficial effects of the utility model are:

[0014] Firstly, regarding the installation of the screw blocks, the unique structure of the fixed long slot and the positioning slide greatly simplifies the installation process. The positioning slide and the positioning slider work together in a squeezing and sliding manner, effectively preventing the screw blocks from slipping to the bottom of the through slot during installation. Workers do not need to hold the screw blocks by hand during installation, significantly reducing installation difficulty and workload, improving production efficiency, and reducing labor costs.

[0015] Secondly, regarding the adjustment of the tabletop height, due to the presence of the fixed long slot, the screw block can be fixed at any position in the fixed long slot, and the height of the screw block can be flexibly adjusted according to the user's actual needs, thereby realizing the adjustment of the tabletop height.

[0016] Furthermore, from a manufacturing perspective, because the screw block can be freely adjusted up and down, the positional accuracy requirements of the fixing hole are reduced, allowing it to accommodate a wider tolerance range. This feature effectively reduces reliance on high-precision machining equipment during processing, lowers the difficulty and cost of parts processing, and also reduces the scrap rate caused by dimensional deviations. Overall, this significantly reduces production costs and improves production efficiency and product competitiveness.

[0017] In summary, the lifting structure of the height-adjustable desk in this application has made significant progress in terms of ease of installation, flexibility of height adjustment, and control of production costs, and has extremely high practical value and market promotion potential.

[0018] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The utility model will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a partial schematic diagram of the lifting drive mechanism.

[0021] Figure 3 This is a schematic diagram of the support legs and screw blocks.

[0022] Figure 4 This is a schematic diagram of the support structure.

[0023] Figure 5 This is a schematic diagram of the screw block structure.

[0024] Figure 6 This is a side view of the screw block.

[0025] Figure 7 This is a schematic diagram of an elastic rubber pad.

[0026] Figure 1-7 In the middle: 1. Support leg; 2. Drive motor; 3. Drive rod; 4. Gearbox; 5. Lifting screw; 6. Screw block; 7. Through slot; 8. Fixed long slot; 9. Positioning slide groove; 10. Fixing hole; 11. Positioning slider; 12. Guide slope; 13. Elastic rubber pad; 14. Protrusion; 15. Screw hole; 16. Residual material concave surface; 17. Annular reinforcing rib; 18. Straight reinforcing rib; 19. Support rod; 20. Support plate; 21. Fixing frame; 22. Motor bracket; 23. Through hole. Detailed Implementation

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0029] This utility model provides a lifting structure for a height-adjustable table.

[0030] In this embodiment, refer to Figure 1-7The lifting structure of the adjustable table includes a support leg 1, a lifting table frame, and a lifting drive mechanism. The lifting drive mechanism includes a drive motor 2, a drive rod 3 driven by the drive motor 2, a gearbox 4 driven by both ends of the drive rod 3, a lifting screw 5 connected to the output end of the gearbox 4, and a screw block 6 screwed to the lifting screw 5. The support leg has a through groove 7 for the screw block to be embedded. The outer wall of the through groove 7 is provided with a fixed elongated groove 8, and the inner wall of the through groove is provided with a positioning slide groove 9. The outer wall of the screw block is provided with a fixing hole 10 corresponding to the fixed elongated groove and a positioning slider 11 corresponding to the positioning elongated groove. The bottom of the positioning slider 11 has a guide slope 12, and the positioning protrusion and the positioning slide groove adopt a compression sliding fit.

[0031] In the above technical solution, a through groove, a fixed elongated groove, and a positioning slide groove are provided on the support leg. Correspondingly, a fixing hole and a positioning slider are provided on the screw block. The positioning slider and the fixed elongated groove employ a pressing and sliding fit, enabling flexible installation and positioning of the screw block within the through groove of the support leg. The fixed elongated groove allows for convenient adjustment of the screw block height, meeting diverse table height requirements and improving the applicability and user experience of the height-adjustable table. The pressing and sliding fit positioning structure eliminates the need for additional support during screw block installation, facilitating operation, improving assembly efficiency and ease of assembly, while reducing the accuracy requirements for the fixing hole position, adapting to larger tolerances, reducing processing costs and difficulty, and enhancing product competitiveness.

[0032] Specifically, the slope of the guide ramp is 15-30 degrees.

[0033] The guide ramp angle is limited to 15-30 degrees. This specific angle range ensures that the screw block can be easily inserted into the through.

[0034] Specifically, an elastic rubber pad 13 is adhered inside the positioning groove.

[0035] An elastic rubber pad is adhered inside the positioning groove, which effectively increases the friction and buffering effect between the positioning slider and the positioning groove. The elastic rubber pad can better form a stable squeezing and sliding fit with the positioning slider.

[0036] Specifically, the surface of the elastic rubber pad 13 has several protrusions 14.

[0037] The surface of the elastic rubber pad is provided with several raised points, which further enhances the friction and positioning effect between the positioning slider and the positioning groove.

[0038] Specifically, the screw block has a screw hole 15 in the middle that is threadedly connected to the lifting screw, the screw hole 15 has a residual material concave surface 16 on the outer ring, and the residual material concave surface 16 has annular reinforcing ribs 17 and straight reinforcing ribs 18.

[0039] The outer ring of the screw hole is provided with a concave surface for excess material and equipped with annular and linear reinforcing ribs. The concave surface for excess material effectively reduces the weight of the screw block without affecting the threaded connection strength between the screw block and the lifting screw. The annular and linear reinforcing ribs enhance the overall structural strength of the screw block while reducing weight, effectively preventing deformation or damage to the screw block, ensuring a stable threaded connection between the screw block and the lifting screw, ensuring smooth and reliable lifting of the lifting table, extending the service life of the screw block, and reducing maintenance and replacement costs caused by screw block damage.

[0040] Specifically, the lifting table frame includes two support rods 19 and a support plate 20 fixed to both ends of the two support rods 19. A fixing frame 21 is fixed to the support plate 20 between the two support rods 19 by bolts. A motor bracket 22 is fixed to the end of the fixing frame by bolts. The drive motor is fixed to the motor bracket 22. The motor bracket is provided with a through hole 23 for the drive rod to pass through.

[0041] The height-adjustable desk frame employs two support rods and fixed support plates at both ends, with the motor bracket and fixed frame secured by bolts. This structural design provides excellent stability and support. The two support rods distribute the force evenly, stably supporting the weight of the desk and the items placed on it. The fixed frame provides a reliable mounting base for the drive motor, and the through holes on the motor bracket ensure smooth installation and transmission of the drive rod, allowing the power generated by the drive motor to be effectively transmitted to the lifting screw through the drive rod and gearbox. The overall structure is rationally laid out, easy to install, and facilitates manufacturing and assembly, improving production efficiency while ensuring the structural integrity and reliability of the lifting function during long-term use.

[0042] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A lifting structure for a height-adjustable desk, comprising legs, a height-adjustable desk frame, and a lifting drive mechanism, wherein the lifting drive mechanism comprises a drive motor, a drive rod driven and connected to the drive motor, a gearbox driven and connected to both ends of the drive rod, a lifting screw connected to the output end of the gearbox, and a screw block screwed to the lifting screw, characterized in that: The support leg has a through groove for inserting the screw block. The outer wall of the through groove is provided with a fixed long groove, and the inner wall of the through groove is provided with a positioning slide groove. The outer wall of the screw block is provided with a fixing hole corresponding to the fixed long groove and a positioning slider corresponding to the positioning long groove. The bottom of the positioning slider has a guide slope, and the positioning protrusion and the positioning slide groove adopt a squeezing sliding fit.

2. The lifting structure of the height-adjustable table according to claim 1, characterized in that: The slope of the guide ramp is 15-30 degrees.

3. The lifting structure of the height-adjustable table according to claim 1, characterized in that: A layer of elastic rubber pad is adhered inside the positioning groove.

4. The lifting structure of the height-adjustable table according to claim 3, characterized in that: The surface of the elastic rubber pad has several protrusions.

5. The lifting structure of the height-adjustable table according to claim 1, characterized in that: The screw block has a screw hole in the middle that is threaded to the lifting screw. The outer ring of the screw hole is provided with a residual material concave surface. The residual material concave surface is provided with annular reinforcing ribs and straight reinforcing ribs.

6. The lifting structure of the height-adjustable table according to claim 1, characterized in that: The lifting table frame includes two support rods and support plates fixed to both ends of the two support rods. A fixed frame is fixed to the support plate between the two support rods by bolts. A motor bracket is fixed to the end of the fixed frame by bolts. The drive motor is fixed on the motor bracket. The motor bracket is provided with a through hole for the drive rod to pass through.

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