Transmission mechanism of lifting table

Abstract

The transmission mechanism of the lifting table comprises a first transmission rod and a second transmission rod, the first transmission rod is connected to the second transmission rod in a sliding mode, the first transmission rod moves along the second transmission rod, at least one bearing is arranged on each of the first transmission rod and the second transmission rod, and the movement stability of the transmission mechanism is improved by installing the bearings.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting tables, in particular to a transmission mechanism of a lifting table. Background Art

[0002] The lifting table is a common item in daily life. The height of the lifting table can be adjusted through a transmission mechanism. People of different heights can adjust the height to a suitable height through the transmission mechanism. It is deeply loved by people. The transmission device group in the prior art is complicated and the length adjustment is troublesome. For example, the announcement number is CN 217937509 U's patent document discloses a transmission structure for a lifting table, a lifting table frame and a lifting table, wherein the transmission structure includes: a hollow tube with external threads on both sides; two groups of fixing parts, one side of which is provided with a connecting part that matches the inner tube of the hollow tube, and the other side of the fixing part is provided with a deformable fixing part; wherein the inner side of the deformable fixing part is polygonal to fix the polygonal rod, and the outer side of the deformable fixing part is provided with a conical surface; a fixing nut, the interior of which is provided with an internal thread that matches the external thread, and the inner side of which is provided with a conical inclined surface to match the conical surface of the deformable fixing part so as to squeeze the conical surface to make the deformable fixing part shrink inwardly. The transmission structure for the lifting table adopts the matching locking fixing part of the hollow tube and the fixing nut, and at the same time, the fixing nut squeezes the deformable fixing part of the fixing part to shrink inwardly and fix the polygonal rod, thereby facilitating the loosening and locking of the polygonal rod to adjust the transmission length, but the transmission structure has the problem of poor stability. Utility Model Content

[0003] The utility model provides a transmission mechanism for a lifting table, which solves the problem of poor transmission stability in the prior art.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The transmission mechanism of the lifting table includes

[0006] A first transmission rod, wherein the first transmission rod is provided with a thread;

[0007] A second transmission rod;

[0008] It is characterized in that: the first transmission rod is slidably connected to the second transmission rod, the first transmission rod is displaced along the second transmission rod, and at least one bearing is provided on the first transmission rod and the second transmission rod, and the installation of the bearing improves the movement stability of the mechanism.

[0009] Furthermore, a limit piece is threadedly connected to the first transmission rod, and a fixed seat is arranged outside the limit piece, which is connected to the bearing on the second transmission rod to realize the connection between the fixed seat and the second transmission rod, so that the second transmission rod and the fixed seat move synchronously.

[0010] Furthermore, a connecting seat is threadedly connected to the second transmission rod, a sleeve is threadedly connected to the outer surface of the connecting seat, and the sleeve is fixedly connected to the base plate. The second transmission rod rotates to generate a linear displacement along the connecting seat to achieve height adjustment of the lifting table.

[0011] Furthermore, a limiting portion is provided on the surface of the limiting member, a mounting portion is formed on the bearing, a limiting groove is provided in the fixing seat, and the limiting portion and the mounting portion are installed in the limiting groove to achieve axial limiting of the limiting member and the bearing.

[0012] Furthermore, a positioning portion is formed on the surface of the limiting member, and a mounting groove is formed on the fixing seat. The mounting groove is communicated with the limiting groove. The positioning portion cooperates with the mounting groove to achieve circumferential limiting of the limiting member.

[0013] Furthermore, a mounting hole is provided on the fixing seat, the end faces of the two halves of the fixing seat are fitted together, and the fixing piece passes through the mounting hole and cooperates with the two halves of the fixing seat, so as to facilitate the installation with the limit piece and the bearing.

[0014] Furthermore, the fixed seat includes an installation section and a connecting section. A sleeve 2 is stamped and connected to the fixed seat. A clamping portion is provided on the sleeve 2. A clamping groove is formed on the surface of the connecting section. The clamping portion is clamped in the clamping groove until the upper end surface of the sleeve 2 abuts against the lower end surface of the installation section, thereby achieving a positioning and installation effect. Circumferential limiting is performed by the cooperation of the clamping portion and the clamping groove.

[0015] Furthermore, the surface of the connecting section is recessed to form a matching groove, and the matching grooves are symmetrically arranged. A snap-fit ​​piece is stamped on the sleeve 2. When the upper end surface of the sleeve 2 is abutted against the lower end surface of the mounting section, the snap-fit ​​piece is snapped into the matching groove, and the surface of the snap-fit ​​piece is abutted against the bottom surface of the matching groove, thereby realizing the connection between the sleeve 2 and the fixed seat and preventing the sleeve 2 from being displaced.

[0016] Furthermore, one end of the first transmission rod is fixedly connected to the limiting block, a matching section is provided in the second transmission rod, a protrusion is circumferentially provided on the limiting block, a corresponding matching section is provided on the matching section, the protrusion cooperates with the matching section, the protrusion can be displaced along the matching section, and the distance between the first transmission rod and the second transmission rod is adjusted by moving the protrusion.

[0017] Furthermore, a nylon ring is provided at one end of the second transmission rod away from the bearing, and the nylon ring is sleeved on the surface of the second transmission rod. The nylon ring is provided to prevent abnormal noise caused by hitting the pipe.

[0018] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0019] The transmission mechanism of the lifting table of the utility model comprises a first transmission rod slidably connected to a second transmission rod, the first transmission rod is displaced along the second transmission rod, and at least one bearing is provided on each of the first transmission rod and the second transmission rod, and the bearings are installed to improve the movement stability of the mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings:

[0021] Figure 1 It is a structural schematic diagram of the transmission mechanism of the lifting table of the utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of the structure in which sleeve 1, sleeve 2 and half of the fixing seat are removed;

[0023] Figure 3 for Figure 1 A top view of

[0024] Figure 4 for Figure 3 Sectional view along AA direction;

[0025] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0026] Figure 6 for Figure 4 A partial enlarged view of point C in the middle;

[0027] Figure 7 It is a structural schematic diagram of the fixing seat in the utility model;

[0028] Figure 8 for Figure 7 A full cross-sectional view of

[0029] Fig. 9 It is a structural schematic diagram of the position limiting member in the utility model;

[0030] Fig.10 It is a structural schematic diagram of the limit block in the utility model;

[0031] Fig.11 It is a cross-sectional view of sleeve 2 in the utility model.

[0032] In the figure,

[0033] 10-first transmission rod; 11-sleeve two; 12-connecting assembly; 13-fixed seat; 14-sleeve one; 15-second transmission rod; 16-limiting block; 17-matching part; 18-limiting piece; 19-shaft retaining ring; 20-bearing; 21-clamping piece; 22-base; 23-limiting part; 24-positioning part; 25-clamping groove; 26-matching groove; 27-mounting hole; 28-limiting groove; 29-mounting groove; 30-connecting seat; 31-mounting part; 32-nylon ring; 33-protruding part; 34-clamping part. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0037] like Figures 1 to 11 As shown, the transmission mechanism of the lifting table of the utility model is shown, by providing at least one bearing 20 on the first transmission rod 10 and the second transmission rod 15, the movement stability of the mechanism is improved by installing the bearing 20.

[0038] The transmission mechanism of the lifting table of the present invention comprises a first transmission rod 10 and a second transmission rod 15. The first transmission rod 10 and the second transmission rod 15 are both screw rods, and are made of aluminum material, and have the advantage of light weight. Threads are arranged on the surfaces of the first transmission rod 10 and the second transmission rod 15. The second transmission rod 15 is a sleeve structure, and a matching section is formed on the inner surface. A matching portion 17 is arranged on the matching section. One end of the first transmission rod 10 is fixedly connected to a limiting block 16, and the two are connected by screws. A protrusion 33 corresponding to the matching portion 17 is circumferentially arranged on the limiting block 16. The matching portion 17 is a circumferentially arranged slide groove, and the protrusion 33 is a sliding block protruding on the surface. Before working, the protrusion 33 drives the first transmission rod 10 to move along the matching portion 17, and adjusts the spacing between the first transmission rod 10 and the second transmission rod 15, thereby limiting the maximum lifting height of the lifting table. The end of the first transmission rod 10 away from the limit block 16 is connected to a connecting assembly 12, and the connecting assembly 12 includes a three-claw disk, a connecting plate, a bearing 20 seat and a buffer pad which are sequentially matched and connected. The three-claw disk is fixedly connected to the first transmission rod 10, and a bearing 20 is provided on the first transmission rod 10. The bearings 20 are all deep groove ball bearings with model 609Z, which have the advantages of reliability, durability, simple structure, high operation speed, good stability and noise reduction by improving the internal structure. The bearing 20 is arranged on the bearing 20 seat, and the motor is connected to the three-claw disk to drive the first transmission rod 10 to rotate.

[0039] A limiting member 18 is threadedly connected to the first transmission rod 10, and a fixed seat 13 is arranged on the outer surface of the limiting member 18, and the fixed seat 13 is connected to the bearing 20 on the second transmission rod 15. An annular limiting portion 23 and a vertical positioning portion 24 are formed on the surface of the limiting member 18, and the positioning portions 24 are evenly arranged. A bearing 20 is provided on the second transmission rod 15 to improve the stability of the movement. A mounting portion 31 is formed on the bearing 20, and a limiting groove 28 corresponding to the limiting portion 23 and the mounting portion 31 and a mounting groove 29 corresponding to the positioning portion 24 are provided in the fixed seat 13. The limiting portion 23 and the mounting portion 31 are installed in the limiting groove 28, and the positioning portion 24 is clamped in the mounting groove 29, so as to realize axial limitation of the limiting member 18 and the bearing 20, and circumferential limitation of the limiting member 18.

[0040] The fixing seat 13 is formed by splicing two halves of the fixing seat 13. The fixing seat 13 is provided with a mounting hole 27. The end faces of the two halves of the fixing seat 13 are fitted together. The fixing piece passes through the mounting hole 27. The fixing piece adopts a screw to realize the installation of the fixing seat 13. When installing, first clamp the limit piece 18 and the bearing 20 on the half fixing seat 13. After alignment, the other half of the fixing seat 13 is matched with it to realize the connection between the first transmission rod 10 and the second transmission rod 15 to prevent the first transmission rod 10 from being displaced. The fixing seat 13 includes a mounting section and a connecting section. The fixing seat 13 is stamped and connected with a sleeve 2 11. The sleeve 2 11 is provided with a clamping portion 34. The connecting section A snap-fit ​​groove 25 is formed on the surface, and the snap-fit ​​portion 34 is snapped into the snap-fit ​​groove 25 until the upper end surface of the sleeve 11 abuts against the lower end surface of the mounting section, thereby achieving a positioning and installation effect. The snap-fit ​​portion 34 cooperates with the snap-fit ​​groove 25 to perform circumferential limiting. The surface of the connecting section is recessed to form a matching groove 26. The matching grooves 26 are symmetrically arranged. A snap-fit ​​sheet 21 is stamped on the sleeve 11. When the upper end surface of the sleeve 11 abuts against the lower end surface of the mounting section, the snap-fit ​​sheet 21 is snapped into the matching groove 26. The surface of the snap-fit ​​sheet 21 abuts against the bottom surface of the matching groove 26, thereby realizing the connection between the sleeve 11 and the fixing seat 13 and preventing the sleeve 11 from displacement.

[0041] The second transmission rod 15 is threadedly connected with a connecting seat 30, and a sleeve 14 is threadedly connected to the outer surface of the connecting seat 30. The other end of the sleeve 14 is threadedly connected with a base 22, and the base 22 is used to connect the bottom plate. The sleeve 14 is fixedly connected to the bottom plate through the base 22 bolts. When the motor rotates, the first transmission rod 10 drives the second transmission rod 15 to rotate through the limit block 16, and the second transmission rod 15 produces a linear displacement along the connecting seat 30 to achieve the adjustment of the height of the lifting table. The second transmission rod 15 is provided with a shaft retaining ring 19 at one end of the bearing 20. The shaft retaining ring 19 is located at the upper end of the bearing 20 and abuts against the end face of the bearing 20 to achieve axial limitation of the bearing 20. A nylon ring 32 is provided at the end of the second transmission rod 15 away from the bearing 20. The nylon ring 32 is sleeved on the surface of the second transmission rod 15. The nylon ring 32 is provided to prevent the pipe from generating abnormal noise.

[0042] Before work, loosen the fixing seat 13, remove the fixing seat 13, adjust the position of the limit piece 18, and displace it in the matching section of the limit block 16 and the second transmission rod 15. According to needs, adjust the distance between the first transmission rod 10 and the second transmission rod 15. After the adjustment, the fixing seat 13 is installed and fixed in coordination with the limit piece 18 and the bearing 20. It is connected to the motor through the three-claw disk. The rotation of the motor drives the first transmission rod 10 to rotate. The first rotating rod drives the two transmission rods to rotate synchronously through the bearing 20 and the fixing seat 13. The sleeve 14 is threadedly connected with the connecting seat 30. The sleeve 14 is fixed on the bottom plate. The second transmission rod 15 is threadedly matched with the connecting seat 30. The second transmission rod 15 rotates to achieve up and down displacement, thereby achieving height adjustment of the lifting table.

[0043] The above are only specific embodiments of the utility model, but the technical features of the utility model are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the utility model to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the utility model.

Claims

1. The transmission mechanism of the lifting table includes A first transmission rod, wherein the first transmission rod is provided with a thread; A second transmission rod; Features: The first transmission rod is slidably connected to the second transmission rod, the first transmission rod is displaced along the second transmission rod, and at least one bearing is provided on each of the first transmission rod and the second transmission rod, and the bearing is installed to improve the movement stability of the mechanism.

2. The transmission mechanism of the lifting table according to claim 1, characterized in that: A limiting member is threadedly connected to the first transmission rod, and a fixing seat is disposed on the outer shell of the limiting member. The fixing seat is connected to the bearing on the second transmission rod to achieve connection between the fixing seat and the second transmission rod.

3. The transmission mechanism of the lifting table according to claim 2, characterized in that: A connecting seat is threadedly connected on the second transmission rod, a sleeve 1 is threadedly connected to the outer surface of the connecting seat, the sleeve 1 is fixedly connected to the bottom plate, and the second transmission rod rotates to generate a linear displacement along the connecting seat.

4. The transmission mechanism of the lifting table according to claim 2, characterized in that: A limiting portion is provided on the surface of the limiting member, a mounting portion is formed on the bearing, a limiting groove is provided in the fixing seat, and the limiting portion and the mounting portion are installed in the limiting groove to achieve axial limiting of the limiting member and the bearing.

5. The transmission mechanism of the lifting table according to claim 4, characterized in that: A positioning portion is formed on the surface of the limiting member, and a mounting groove is formed on the fixing seat. The mounting groove is communicated with the limiting groove. The positioning portion cooperates with the mounting groove to realize circumferential limiting of the limiting member.

6. The transmission mechanism of the lifting table according to claim 2, characterized in that: The fixing seat is provided with a mounting hole, the end surfaces of the two halves of the fixing seat are fitted together, and the fixing piece passes through the mounting hole to realize the installation of the fixing seat.

7. The transmission mechanism of the lifting table according to claim 2, characterized in that: The fixing seat includes an installation section and a connecting section. A second sleeve is stamped and connected to the fixing seat. A clamping portion is provided on the second sleeve. A clamping groove is formed on the surface of the connecting section. The clamping portion is clamped in the clamping groove until the upper end surface of the second sleeve abuts against the lower end surface of the installation section.

8. The transmission mechanism of the lifting table according to claim 7, characterized in that: The surface of the connecting section is recessed to form a matching groove, and the matching grooves are symmetrically arranged. A snap-fit ​​piece is stamped on the second sleeve, and the snap-fit ​​piece is snapped into the matching groove to achieve the connection between the second sleeve and the fixing seat.

9. The transmission mechanism of the lifting table according to claim 1, characterized in that: One end of the first transmission rod is fixedly connected to a limiting block, a matching section is provided in the second transmission rod, a protrusion is circumferentially provided on the limiting block, a corresponding matching section is provided on the matching section, the protrusion matches with the matching section, and the distance between the first transmission rod and the second transmission rod is adjusted by moving the protrusion.

10. The transmission mechanism of the lifting table according to claim 1, characterized in that: A nylon ring is provided at one end of the second transmission rod away from the bearing, and the nylon ring is sleeved on the surface of the second transmission rod.

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