Transmission module for lifting table and lifting table

Abstract

The invention discloses a transmission module for a lifting table, belongs to the field of lifting tables, solves the problem that the existing motors are different in mounting modes in the lifting table driven by a single / double motor, and adopts the technical scheme that the transmission module mainly comprises a worm gear, a worm, a transmission shaft, a first bevel gear and a second bevel gear, the worm gear and the second bevel gear are fixed to the transmission shaft, the worm is meshed with the worm gear, the first bevel gear is meshed with the second bevel gear, and power of the motor is input through the worm and converted into power output by the output end of the transmission shaft and the output end of the first bevel gear in different directions through the transmission module. According to the invention, the motor can be universally installed in a lifting table driven by a single / double motor. The invention further discloses a lifting table, the requirement for installation of a single motor or double motors is met, and the universality of the lifting table is higher.

Description

Technical Field

[0001] The invention relates to the field of lifting tables, in particular to a transmission module for lifting tables and the lifting table. Background Art

[0002] In the prior art, the driving modes of the lifting table are generally divided into single-motor drive and dual-motor drive. For example, the utility model patent CN211092373U discloses a single-motor lifting table, which includes lifting columns located on both sides of the crossbeam. A transmission device connected to a screw mechanism is installed inside the lifting column. The transmission rod is driven to rotate by a single motor. Both ends of the transmission rod are respectively connected to the transmission devices in the lifting columns on both sides. The transmission device changes the transmission direction to drive the screw mechanism to work so that the lifting columns on both sides rise and fall synchronously. The motor is exposed outside the lifting column, which is not beautiful. The axis of the output end of the motor is perpendicular to the axis of the crossbeam. For example, invention patent CN106388253A discloses a dual-motor dual-tube liftable office desk, including lifting columns located on both sides of a beam, with a screw mechanism installed inside the lifting columns. The screw mechanism in each lifting column is directly driven by a separate motor without the need for a transmission device. The output axis of the motor is parallel to the axis of the beam. The two driving modes of the lift tables require different power directions from the motor output, resulting in different motor installation methods, which makes the lift tables unable to be universal, that is, a single-motor lift table cannot be installed with dual motors, and a dual-motor lift table cannot be installed with a single motor. Summary of the invention

[0003] The purpose of the present invention is to provide a transmission module for a lifting table, which solves the problem of different installation methods of existing motors in lifting tables driven by single / double motors, so as to realize universal installation of motors in lifting tables driven by single / double motors.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a transmission module for a lifting table, the transmission module is used to transmit the power of the motor, the transmission module includes a worm wheel, a worm, a transmission shaft, a first bevel gear and a second bevel gear, the worm wheel and the second bevel gear are fixed on the transmission shaft, the worm and the worm wheel are meshed, the first bevel gear is meshed with the second bevel gear, the power of the motor is input through the worm and converted into power output in different directions by the output end of the transmission shaft and the output end of the first bevel gear through the transmission module.

[0005] After adopting the above technical scheme, the present invention has the following advantages: first, the second bevel gear is directly installed on the transmission shaft and meshes with the first bevel gear, the power of the motor is input through the worm and converted into power output in different directions by the output end of the transmission shaft and the output end of the first bevel gear through the transmission module, and the requirements for power direction of the single-motor driven lifting table mode and the dual-motor driven lifting table mode can be met at the same time without adjusting the motor mode, so that the motor can be universally installed in lifting tables with different driving modes, and the fixed installation mode of the motor also fixes the installation mode of the transmission module, so that the same type of lifting table can be installed with a single motor or a dual motor, which has higher versatility, and at the same time, the power of the output end of the transmission shaft and the output end of the first bevel gear can be output at the same time, and the output is smoother. Finally, the use of a worm and worm gear structure can provide a larger reduction ratio, which means that the motor can generate greater torque at a lower speed, and can provide smooth and powerful lifting, and the worm and worm gear structure has a self-locking characteristic, and the power output from the output end of the transmission shaft and the output end of the first bevel gear can be self-locking, thereby enhancing the safety and reliability of the transmission module.

[0006] Furthermore, the directions of power outputted from the output end of the transmission shaft and the output end of the first bevel gear are perpendicular.

[0007] By adopting the above technical solution, since the motor power output direction of the single-motor driven lifting table is usually perpendicular to the motor power output direction of the dual-motor driven lifting table, the power direction output through the output end of the transmission shaft and the output end of the first bevel gear is perpendicular, which further meets the power output direction requirements of the single / dual motor driven lifting table.

[0008] Furthermore, the axis of the second bevel gear coincides with the axis of the transmission shaft, and the axis of the output end of the first bevel gear is perpendicular to the axis of the output end of the second bevel gear.

[0009] By adopting the above technical solution, the power directions outputted by the output end of the transmission shaft and the output end of the first bevel gear are perpendicular.

[0010] Furthermore, the axis of the first bevel gear is parallel to the axis of the worm.

[0011] By adopting the above technical solution, the axis of the first bevel gear is parallel to the axis of the worm, so that the first bevel gear and the worm can be installed in parallel, making the structure of the transmission module flatter.

[0012] Furthermore, the transmission module also includes a housing for mounting a worm gear, a worm, a transmission shaft, a first bevel gear and a second bevel gear, the housing being provided with a power input port, a first power output port and a second power output port, the output end of the motor inputs power through the power input port, and the output end of the transmission shaft and the output end of the first bevel gear output power through the first power output port and the second power output port respectively.

[0013] By adopting the above technical solution, since all the parts of the transmission module are installed in a shell, the parts of the transmission module are modularized, which is convenient for embedding into the interior of the lifting table, is more beautiful, and the entire device can also be designed to be more compact.

[0014] Furthermore, a first connecting hole is provided at the output end of the transmission shaft, and the axis of the first connecting hole coincides with the axis of the transmission shaft; a second connecting hole is provided at the output end of the first bevel gear, and the axis of the second connecting hole coincides with the axis of the first bevel gear.

[0015] By adopting the above technical solution, the overlapping axes reduce the bending stress on the transmission shaft and the first bevel gear, thereby improving the rigidity of the entire device and helping to enhance the ability of the transmission module to drive external loads.

[0016] Furthermore, first power output ports are provided on both sides of the shell, two ends of the transmission shaft are respectively located at the two first power output ports, and first connecting holes are provided on both ends of the transmission shaft.

[0017] By adopting the above technical solution, two first power output ports are designed, allowing power to be output at both ends of the transmission shaft at the same time, so as to realize synchronous lifting and lowering of both sides of the lifting table, and ensure that the desktop is more stable and even during the lifting process. The double-sided power output can reduce the uneven stress problem that may be caused by unilateral output.

[0018] Furthermore, the first connecting holes at both ends of the transmission shaft are connected to each other.

[0019] By adopting the above technical solution, the first connecting holes at both ends of the transmission shaft are interconnected, and the external connecting part can be inserted and connected from any end of the transmission shaft, which makes the connection more versatile and can also increase the connection length between the external connecting part and the transmission shaft, thereby improving the connection strength.

[0020] Furthermore, the second bevel gear includes a second bevel gear body and a second shaft portion coaxially arranged on the second bevel gear body, the second shaft portion is sleeved on the transmission shaft, the end of the second shaft portion protrudes relative to the second bevel gear body, and the worm gear is at least partially connected to the portion of the second shaft portion protruding relative to the second bevel gear body.

[0021] By adopting the above technical solution, the protruding second shaft portion increases the connection stability between the worm gear and the second bevel gear. The worm gear can directly drive the second bevel gear, thereby improving the transmission efficiency, thereby making the power output from the output end of the transmission shaft and the output end of the first bevel gear more consistent.

[0022] Another object of the present invention is to provide a lifting table, comprising a desktop and a crossbeam installed on the back of the desktop, a pair of lifting columns are installed at both ends of the crossbeam, and the pair of lifting columns are each provided with a receiving cavity that can accommodate a motor and a driving device as described in any one of the above embodiments, and the two lifting columns are provided with connecting holes that are arranged oppositely and connected, and the connecting hole can be connected to one of the output end of the transmission shaft and the output end of the first bevel gear.

[0023] By adopting the above technical solution, firstly, a accommodating cavity is provided inside the lifting column, so that the motor and the transmission module can be completely hidden inside the lifting column, which is not only beautiful but also saves space under the desktop. The lifting column can also isolate the noise of the motor and the transmission module, thereby achieving a noise reduction effect. Since the lifting table is provided with a accommodating cavity for installing the motor in the lifting column, a motor can be arranged in each lifting column to produce a dual-motor driven lifting table, and a pair of lifting columns are provided with relatively arranged and connected connecting holes, and the connecting hole can be connected to one of the output end of the transmission shaft and the output end of the first bevel gear. A motor can be arranged in one lifting column to drive the transmission module, and a connecting rod is arranged to connect the transmission modules in a pair of lifting columns. The connecting rod transmits power from one transmission module to another transmission module to drive the pair of lifting columns to rise and fall synchronously, thereby producing a single-motor driven lifting table, without changing the installation method and position of the motor and the transmission module, so that the lifting table has higher versatility, and since the connection direction of the motor and the worm is fixed, the connecting hole can be connected to one of the output end of the transmission shaft and the output end of the first bevel gear, and the installation direction of the transmission module can be changed according to the lifting table to change the installation direction of the motor, so that the motor can adapt to different lifting tables. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings:

[0025] Figure 1 This is a schematic structural diagram of a transmission module for a lifting table according to Embodiment 1 of the present invention;

[0026] Figure 2 It is a cross-sectional view of a transmission module for a lifting table according to Embodiment 1 of the present invention;

[0027] Figure 3 It is a structural schematic diagram of a motor according to Embodiment 1 of the present invention;

[0028] Figure 4 It is an assembly diagram of the transmission module and the motor of the first embodiment of the present invention;

[0029] Figure 5 It is a partial structural schematic diagram of a transmission module and a motor according to Embodiment 1 of the present invention;

[0030] Figure 6A cross-sectional view of a transmission module and a motor according to Embodiment 1 of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of a lifting table driven by a single motor in Embodiment 2 of the present invention;

[0032] Figure 8 It is a cross-sectional view of a lifting table driven by a single motor in Embodiment 2 of the present invention;

[0033] Fig. 9 This is a schematic diagram of the structure of a dual-motor driven lifting table in Embodiment 2 of the present invention;

[0034] Fig.10 It is a cross-sectional view of a dual-motor driven lifting table in Embodiment 2 of the present invention;

[0035] In the figure, 10, cross beam; 20, lifting column; 201, inner tube; 202, outer tube; 21, accommodating chamber; 22, connecting hole; 23, screw rod; 24, connecting rod; 30, motor; 31, output shaft; 32, worm section; 40, transmission module; 41, housing; 411, power input port; 412, first power output port; 413, second power output port; 42, worm gear; 421, protrusion; 43, transmission shaft; 431, first connecting hole; 44, first bevel gear; 441, second connecting hole; 442, first bevel gear body; 443, first shaft portion; 45, second bevel gear; 451, second bevel gear body; 452, second shaft portion; 46, first bearing; 47, second bearing. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in sequences other than those illustrated or described herein.

[0038] It should be understood that in various embodiments of the present invention, the size of the serial numbers of the processes does not mean the order of execution. The execution order of the processes should be determined by their functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0039] It should be understood that in the present invention, "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0040] It should be understood that in the present invention, "plurality" refers to two or more than two. "And / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, X and / or Y can represent: X exists alone, X and Y exist at the same time, and Y exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "Contains X, Y and Z", "Contains X, Y, Z" means that X, Y, and Z are all included, "Contains X, Y or Z" means that one of X, Y, and Z is included, and "Contains X, Y and / or Z" means that any one, any two, or three of X, Y, and Z are included.

[0041] The technical solution of the present invention is described in detail with specific embodiments below. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0042] Embodiment 1:

[0043] like Figures 1 to 6 As shown, the present invention provides a transmission module for a lifting table, wherein the transmission module 40 is used to transmit the power of the motor 30, and is mainly used to drive the lifting table of the double lifting column to rise and fall. The transmission module 40 includes a worm wheel 42, a worm 32, a transmission shaft 43, a first bevel gear 44, and a second bevel gear 45. The worm wheel 42 and the second bevel gear 45 are fixed on the transmission shaft 43, the worm 32 and the worm wheel 42 are meshed, and the first bevel gear 44 is meshed with the second bevel gear 45. The power of the motor 30 is input through the worm 32 and converted into power output in different directions by the output end of the transmission shaft 43 and the output end of the first bevel gear 44 through the transmission module 40.

[0044] First, the second bevel gear 45 is directly installed on the transmission shaft 43 and meshed with the first bevel gear 44. The power of the motor 30 is input through the worm 32 and converted into power output in different directions at the output end of the transmission shaft 43 and the output end of the first bevel gear 44 through the transmission module 40. There is no need to adjust the mode of the motor 30, which can simultaneously meet the requirements of the single-motor driven lifting table mode and the dual-motor driven lifting table mode for the power direction, so that the transmission module 40 can be universally installed in lifting tables with different driving modes. The fixed installation mode of the motor 30 also fixes the installation mode of the transmission module 40, so that the same lifting table can be installed with a single motor 30 or a dual motor 30, which has higher versatility. At the same time, the power of the output end of the transmission shaft 43 and the output end of the first bevel gear 44 can be output at the same time, and the output is smoother. Finally, the use of a worm and worm gear structure can provide a larger reduction ratio, which means that the motor 30 can generate greater torque at a lower speed, and can provide smooth and powerful lifting. The worm and worm gear structure has a self-locking characteristic, and the power output at the output end of the transmission shaft 43 and the output end of the first bevel gear 44 can be self-locking, which enhances the safety and reliability of the transmission module 40.

[0045] In order to make the transmission module 40 more modular, the transmission module 40 further includes a housing 41 for mounting the worm gear 42, the worm 32, the transmission shaft 43, the first bevel gear 44 and the second bevel gear 45. The housing 41 is provided with a power input port 411, a first power output port 412 and a second power output port 413. The output end of the motor 30 inputs power through the power input port 411, and the output ends of the transmission shaft 43 and the first bevel gear 44 respectively output power through the first power output port 412 and the second power output port 413. Modularizing the parts of the transmission module 40 is convenient for embedding into the interior of the lifting table, which is more beautiful, and the entire device can also be designed to be more compact.

[0046] For ease of understanding, the instructions are attached. Figures 4 to 6 The figure is a schematic diagram of the motor 30 and the transmission module 40 after assembly, wherein the output end of the motor 20 is the output shaft 31, and the output shaft 31 and the worm 32 are integrally formed. Of course, in other embodiments, the output shaft 31 and the worm 32 can also be detachably connected through a connecting structure.

[0047] The output end of the transmission shaft 43 is provided with a first connection hole 431, the axis of which coincides with the axis of the transmission shaft 43, and the output end of the first bevel gear 44 is provided with a second connection hole 441, the axis of which coincides with the axis of the first bevel gear 44. The first connection hole 431 is connected to the first power output port 412, and the second connection hole 441 is connected to the second power output port 413. The coincident axis reduces the bending stress on the transmission shaft 43 and the first bevel gear 44, improves the rigidity of the entire device, and helps to improve the ability of the transmission module 40 to drive external loads.

[0048] In order to enable the transmission module 40 to drive multiple components, first power output ports 412 are provided on both sides of the shell 41, and both ends of the transmission shaft 43 are respectively located at the two first power output ports 412. Both ends of the transmission shaft 43 are provided with first connecting holes 431, allowing both ends of the transmission shaft 43 to output power simultaneously, thereby realizing synchronous lifting and lowering of both sides of the lifting table, ensuring that the desktop is more stable and even during the lifting process, and double-sided power output can reduce the uneven stress problem that may be caused by unilateral output.

[0049] In order to further meet the installation requirements of the transmission module 40 in different driving modes, the first connection holes 431 at both ends of the transmission shaft 43 are interconnected. The first connection holes 431 at both ends of the transmission shaft 43 are interconnected, and the external connection piece can be inserted and connected from any end of the transmission shaft 43, which has higher connection versatility and can also increase the connection length between the external connection piece and the transmission shaft 43, thereby improving the connection strength.

[0050] Since the power output direction of the motor 30 of the single motor driven lifting table is usually perpendicular to the power output direction of the motor 30 of the dual motor driven lifting table, preferably, the power output directions of the output end of the transmission shaft 43 and the output end of the first bevel gear 44 are perpendicular, further meeting the power output direction requirements of the single / dual motor driven lifting table.

[0051] Specifically, the axis of the second bevel gear 45 coincides with the axis of the transmission shaft 43 , and the axis of the output end of the first bevel gear 44 is perpendicular to the axis of the output end of the second bevel gear 45 .

[0052] In order to make the structure of the transmission module 40 flatter, the axis of the first bevel gear 44 is parallel to the axis of the worm 32, that is, the axis of the first bevel gear 44 is parallel to the axis of the output shaft 31, so that the first bevel gear 44 and the worm 32 can be installed in parallel, making the structure of the transmission module 40 flatter. Preferably, the first bevel gear 44 is located between the transmission shaft 43 and the motor 30 and on one side of the radial direction of the output shaft 31 of the motor 30, and the space around the output shaft 31 of the motor 30 is reasonably used, which is conducive to shortening the length of the transmission module 40 along the axis direction of the motor 30, so as to meet the installation of the transmission module 40 in a small space.

[0053] The first bevel gear 44 includes a first bevel gear body 442 and a first shaft portion 443 coaxially arranged on the first bevel gear body 442, the second connection hole 441 is located on the first shaft portion 443, and the end of the first shaft portion 443 protrudes relative to the first bevel gear body 442. Because the protruding portion can provide a larger contact area, the stress can be better dispersed, thereby enhancing the connection strength between the external connection piece and the bevel gear, and reducing the fatigue or fracture of the first bevel gear 44 material due to stress concentration. The end of the first shaft portion 443 protrudes relative to the first bevel gear body 442 is also provided with a first bearing 46 to realize the first bevel gear 44 rotatably mounted on the housing 41.

[0054] In order to increase the connection reliability, the first connection hole 431 and the second connection hole 441 are polygonal connection holes 22, which are less likely to deform with rotation than circular holes. Therefore, under high torque conditions, the polygonal connection holes 22 can provide higher strength and are less likely to slip. The first connection hole 431 and the second connection hole 441 can be hexagonal holes, triangular holes, etc.

[0055] And, the second bevel gear 45 includes a second bevel gear body 451 and a second shaft portion 452 coaxially arranged on the second bevel gear body 451, the second shaft portion 452 is sleeved on the transmission shaft 43, the end of the second shaft portion 452 protrudes relative to the second bevel gear body 451, and the worm gear 42 is at least partially connected to the protruding portion of the second shaft portion 452 relative to the second bevel gear body 451. The protruding second shaft portion 452 increases the connection stability between the worm gear 42 and the second bevel gear 45, and the worm gear 42 can directly drive the second bevel gear 45, thereby improving the transmission efficiency, so that the power output from the output end of the transmission shaft 43 and the output end of the first bevel gear 44 tends to be more consistent.

[0056] A protruding portion 421 is provided on a side of the worm gear 42 away from the second bevel gear 45 . The protruding portion 421 is fixed on the transmission shaft 43 . The protruding portion 421 is rotatably mounted on the housing 41 via a second bearing 47 .

[0057] It should be noted that the motor 30 and the transmission module 40 are detachably connected via screws, and the motor 30 and the transmission module 40 can be used separately. The housing 41 of the transmission module 40 is also provided with a mounting structure for mounting with the lifting table.

[0058] It can be understood that in other embodiments, the transmission shaft 43 and the first bevel gear 44 can be externally connected to a power transmission member that passes through the first connecting hole 431 and the second connecting hole 441, exposing the connecting parts to the outside to facilitate assembly with external components.

[0059] Embodiment 2:

[0060] like Figures 7 to 10As shown, in this embodiment, a lifting table is provided, including a desktop and a beam 10 installed on the back of the desktop, a pair of lifting columns 20 are installed at both ends of the beam 10, and the pair of lifting columns 20 are each provided with a receiving cavity 21 that can accommodate a motor 30 and a transmission module 40 as in any of the above-mentioned embodiments. The motor 30 and the transmission module 40 can be completely hidden inside the lifting columns 20, which is not only beautiful but also saves space under the desktop. The lifting columns 20 can also isolate the noise of the motor 30 and the transmission module 40, thereby achieving a noise reduction effect. It is also possible to set a motor in each lifting column 20 to realize the production of a dual-motor 30 driven lifting table, and a pair of lifting columns 20 are provided with connecting holes 22 that are arranged oppositely and connected, and a pair of lifting columns 20 may include two lifting columns 20, and the connecting hole 22 may be connected to one of the output ends of the transmission shaft 43 and the output ends of the first bevel gear 44, and a motor 30 may be set in one lifting column 20 to drive the transmission module 40, and a connecting rod 24 is set to connect the transmission modules 40 in the two lifting columns 20, and the connecting rod 24 transmits power from one transmission module 40 to another transmission module 40 to drive the two lifting columns 20 to rise and fall synchronously, so as to realize the production of a single-motor driven lifting table, without changing the installation method and position of the transmission module 40, so as to make the lifting table more versatile. In addition, since the connection direction of the motor 30 and the worm 32 is fixed, the connecting hole 22 may be connected to one of the output ends of the transmission shaft 43 and the output ends of the first bevel gear 44, and the installation direction of the transmission module 40 may be changed according to the lifting table to change the installation direction of the motor 30, so that the motor 30 can adapt to different lifting tables.

[0061] In this embodiment, the first power output port 412 is connected to the connecting hole 22, the second power output port 413 is vertically arranged, the lifting column 20 includes an inner tube 201 and an outer tube 202 sleeved outside the inner tube 201, the inner tube 201 is connected to the cross beam 10, and the bottom end of the outer tube 202 is supported on the ground.

[0062] Specifically, Figure 7 and Figure 8As shown, when producing a single-motor driven lifting table, in addition to preparing the transmission module 40 and the motor 30, it is also necessary to prepare the screw 23, the nut and the connecting rod 24. The transmission module 40 is arranged in the inner tube 201 of one lifting column 20, and the transmission module 40 is fixed on the inner tube 201. The transmission module 40 is arranged in the inner tube 201 of the other lifting column 20, and the transmission module 40 is fixed on the inner tube 201. Both ends of the connecting rod 24 pass through the connecting hole 22 and the first power output port 412 to connect the first connecting holes 431 in the two lifting columns 20. The screw rod 23 in each lifting column 20 passes through the second power output port 413 of the transmission module 40 and is connected to the second connecting hole 441. The nut is fixedly connected to the outer tube 202 and is threadedly connected to the screw rod 23. The motor 30 drives the screw rod 23 to rotate, so that the nut is lifted or lowered relative to the screw rod 23, so that the outer tube 202 of one lifting column 20 is lifted or lowered relative to the inner tube 201, and at the same time, the connecting rod 24 is driven to rotate, thereby driving the screw rod 23 in the other lifting column 20 to rotate, so that the nut in the other lifting column 20 is lifted or lowered relative to the screw rod 23, so that the outer tube 202 of the other lifting column 20 is lifted or lowered relative to the inner tube 201, so as to drive the two lifting columns 20 to lift or lower synchronously.

[0063] like Fig. 9 and Fig.10 As shown, when producing a dual-motor driven lifting table, in addition to preparing the transmission module 40 and the motor 30, the screw 23 and the nut need to be prepared. The transmission module 40 is set in the inner tube 201 of the two lifting columns 20, and the transmission module 40 is fixed on the inner tube 201. The screw 23 in each lifting column 20 passes through the second power output port 413 of the transmission module 40 to connect to the second connecting hole 441. The nut is fixedly connected to the outer tube 202 and is threadedly connected to the screw 23. The motor 30 drives the screw 23 to rotate, so that the nut is lifted and lowered relative to the screw 23, and the nut drives the outer tube 202 to lift and lower relative to the inner tube 201. The output end of the transmission shaft 43 of the second power output port 413 is idle.

[0064] It should be noted that since the output end of the transmission shaft 43 is located at the first power output port 412, the output end of the first bevel gear 44 is located at the second power output port 413, the output shaft 31 of the motor 30 is parallel to the output end of the first bevel gear 44, and in the above-mentioned single / dual motor driven lifting table, the motor 30 is installed vertically.

[0065] It can be understood that in other embodiments, the transmission module 40 changes the installation direction, the second power output port 413 is connected to the connecting hole 22, the first power output port 412 is vertically arranged, and the motor 30 is horizontally installed, so that the motor 30 can adapt to different lifting tables.

[0066] In addition to the above-mentioned preferred embodiments, the present invention also has other implementation modes. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.

Claims

1. A transmission module for a lifting table, characterized in that: The transmission module is used to transmit the power of the motor. The transmission module includes a worm wheel, a worm, a transmission shaft, a first bevel gear and a second bevel gear. The worm wheel and the second bevel gear are fixed on the transmission shaft. The worm and the worm wheel are meshed, and the first bevel gear is meshed with the second bevel gear. The power of the motor is input through the worm and converted into power output in different directions by the output end of the transmission shaft and the output end of the first bevel gear through the transmission module.

2. The transmission module for a lifting table according to claim 1, characterized in that: The power directions outputted from the output end of the transmission shaft and the output end of the first bevel gear are perpendicular.

3. The transmission module for a lifting table according to claim 2, characterized in that: The axis of the second bevel gear coincides with the axis of the transmission shaft, and the axis of the output end of the first bevel gear is perpendicular to the axis of the output end of the second bevel gear.

4. The transmission module for a lifting table according to claim 1, characterized in that: The axis of the first bevel gear is parallel to the axis of the worm.

5. The transmission module for a lifting table according to claim 1, characterized in that: The transmission module also includes a housing for mounting a worm gear, a worm, a transmission shaft, a first bevel gear and a second bevel gear. The housing is provided with a power input port, a first power output port and a second power output port. The output end of the motor inputs power through the power input port, and the output end of the transmission shaft and the output end of the first bevel gear output power through the first power output port and the second power output port respectively.

6. The transmission module for a lifting table according to claim 5, characterized in that: A first connecting hole is provided at the output end of the transmission shaft, and the axis of the first connecting hole coincides with the axis of the transmission shaft. A second connecting hole is provided at the output end of the first bevel gear, and the axis of the second connecting hole coincides with the axis of the first bevel gear.

7. The transmission module for a lifting table according to claim 6, characterized in that: The housing is provided with first power output ports on opposite sides thereof, two ends of the transmission shaft are respectively located at the two first power output ports, and two ends of the transmission shaft are provided with first connecting holes.

8. The transmission module for a lifting table according to claim 7, characterized in that: The first connecting holes at both ends of the transmission shaft are connected to each other.

9. The transmission module for a lifting table according to claim 1, characterized in that: The second bevel gear includes a second bevel gear body and a second shaft portion coaxially arranged on the second bevel gear body, the second shaft portion is sleeved on the transmission shaft, the end of the second shaft portion protrudes relative to the second bevel gear body, and the worm gear is at least partially connected to the portion of the second shaft portion protruding relative to the second bevel gear body.

10. A lifting table, comprising a tabletop and a crossbeam mounted on the back of the tabletop, with a pair of lifting columns mounted at both ends of the crossbeam, characterized in that: A pair of the lifting columns are each provided with a receiving cavity that can accommodate a motor and a transmission module as described in any one of claims 1 to 9, and a pair of the lifting columns are provided with connecting holes that are arranged opposite to each other and are connected, and the connecting holes can be connected to one of the output ends of the transmission shaft and the output ends of the first bevel gear.

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