Single-leg stand column lifting structure

Abstract

The utility model relates to the technical field of office furniture, in particular to a single-leg stand column lifting structure which comprises a table bottom. One end of the lifting stand column assembly is vertically fixed to the table bottom; the table board is vertically and fixedly connected with the other end of the lifting stand column assembly; the lifting stand column assembly comprises a telescopic shell, a telescopic rod, a motor and a gear driving structure, wherein one end of the telescopic rod is connected with the bottom of the telescopic shell, the telescopic rod is arranged in the telescopic shell and is parallel to the telescopic shell, the motor is fixed in the telescopic shell, and the gear driving structure is connected with the motor and the telescopic rod at the same time. When the motor rotates, the gear driving mechanism drives the telescopic rod to stretch out and draw back. According to the utility model, the telescopic rod, the motor and the gear driving mechanism are all arranged in the telescopic shell, so that the installation steps of equipment are simplified, the problems that an external motor box is tedious in installation and poor in bearing capacity are solved, more application scenes can be met, and the appearance is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of office furniture, in particular to a single-leg column lifting structure. Background Art

[0002] An electric lifting table is a modern office furniture designed to provide a highly flexible working environment. Different from traditional fixed-height desks, an electric lifting table can adjust the height of the tabletop through an electric motor to meet the needs of different users in different working states, such as standing and sitting; a single-leg electric lifting table is particularly suitable for working environments with limited space or workplaces that require flexible configuration.

[0003] In the prior art, for single-leg column lifting structures, pneumatic or hand-cranked models are mostly used, which not only have a small load but also cannot accurately lift the height, and the table legs are prone to shaking; for a lifting table with a single column, such as the Chinese utility model patent with the publication number CN212489000U, which was published on February 9, 2021, discloses a table leg and tabletop connection bracket for a single-leg column lifting structure, which uses a scheme of placing a motor box outside the lifting column to achieve the lifting of the column.

[0004] However, the above-mentioned external motor box scheme is complex to install on the one hand and lacks load-bearing capacity on the other hand. Summary of the Utility Model

[0005] In view of at least one of the above technical problems, the utility model provides a single-leg column lifting structure, which uses the method of placing the motor inside the lifting column to improve the installation convenience and load-bearing capacity.

[0006] According to the first aspect of the utility model, a single-leg column lifting structure is provided, including:

[0007] A table bottom;

[0008] A lifting column assembly, one end of which is vertically fixed on the table bottom;

[0009] A tabletop, which is vertically fixedly connected to the other end of the lifting column assembly;

[0010] The lifting column assembly includes a telescopic shell, a telescopic rod whose one end is connected to the bottom of the telescopic shell and is arranged parallel to the telescopic shell inside the telescopic shell, a motor fixed inside the telescopic shell, and a gear drive structure that is connected to both the motor and the telescopic rod. When the motor rotates, the telescopic rod is driven to expand and contract through the gear drive mechanism.

[0011] In an embodiment of the present utility model, the gear drive structure includes a worm connected to the output shaft of the motor, a worm gear meshing with the worm, a first bevel gear coaxially and fixedly connected to the worm gear, and a second bevel gear arranged on the telescopic rod, and the second bevel gear meshes with the first bevel gear.

[0012] In an embodiment of the present utility model, a damping plate is fixed to the head end of the motor, and the shape of the damping plate is adapted to the inner cross-section of the telescopic housing.

[0013] In an embodiment of the present utility model, damping studs protruding from the damping plate are provided at the corner positions of the damping plate, and the outer wall of the damping studs is in pressing contact with the inner wall of the telescopic housing.

[0014] In an embodiment of the present utility model, a connecting seat is fixed to the tail end of the motor, the cross-section of the connecting seat is adapted to the inner wall cross-section of the telescopic housing, and the connecting seat is provided with a connecting hole.

[0015] In an embodiment of the present utility model, a connecting frame is further provided at the bottom of the tabletop, the connecting frame includes a frame body and a connecting plate connected to the center of the frame body, the frame body is connected to the tabletop, and the connecting plate is connected to the connecting seat.

[0016] In an embodiment of the present utility model, the telescopic housing includes an inner housing and an outer housing sleeved on the inner housing, the outer housing is slidably arranged relative to the inner housing, the motor is fixed in the inner housing, and the other end of the telescopic rod is fixedly connected to the bottom of the outer housing.

[0017] In an embodiment of the present utility model, at least one middle housing is further slidably connected between the outer housing and the inner housing.

[0018] In an embodiment of the present utility model, the table bottom includes a bottom plate and a fixing frame fixed under the bottom plate, a window for the bottom of the telescopic housing to penetrate is provided on the bottom plate, and a hole position for connecting with the bottom of the telescopic housing is provided on the fixing frame.

[0019] In an embodiment of the present utility model, a sealing cover is further embedded on the window, the inner wall of the sealing cover is in contact with the outer wall of the telescopic housing, and the four sides extend in the horizontal direction.

[0020] The beneficial effects of the present utility model are as follows: The present utility model is installed and completed by three parts: the table bottom, the lifting column assembly and the tabletop, which simplifies the installation steps, reduces redundant and cumbersome operations, makes the installation operation more efficient, and makes the installers more relaxed in actual work. By arranging the telescopic rod, the motor and the gear drive mechanism in the telescopic housing, compared with the prior art, it not only solves the problems of cumbersome installation of the external motor box and lack of load-bearing capacity, but also can meet more application scenarios, and the appearance is also optimized. Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 Stereoscopic schematic diagram of the single-leg column lifting structure in the embodiment of the present invention;

[0023] Figure 2 Exploded schematic diagram of the single-leg column lifting structure in the embodiment of the present invention;

[0024] Figure 3 Cross-sectional view of the lifting column assembly in the embodiment of the present invention;

[0025] Figure 4 Structural schematic diagram of the lifting column assembly in the embodiment of the present invention;

[0026] Figure 5 In the embodiment of the present invention Figure 4 Partial enlarged view of part A;

[0027] Figure 6 Installation schematic diagram of the motor in the embodiment of the present invention;

[0028] Figure 7 In the embodiment of the present invention Figure 2 Partial enlarged view of part B;

[0029] Figure 8 In the embodiment of the present invention Figure 2 Partial enlarged view of part C. Detailed Description of the Embodiments

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments.

[0031] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this utility model belongs. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0033] As Figures 1 to 8 shown in the single-leg column lifting structure, it includes: a table bottom 1, a lifting column assembly 2 and a tabletop 3;

[0034] Specifically, please refer to Figure 1 and Figure 2 , the bottom of the lifting column assembly 2 is vertically and fixedly connected to the table bottom 1, and the tabletop 3 is vertically and fixedly connected to the top of the lifting column assembly 2; As Figure 3 shown in, the lifting column assembly 2 includes a telescopic housing 21, a telescopic rod 22 whose one end is connected to the bottom of the telescopic housing 21 and is arranged parallel to the telescopic housing 21 inside the telescopic housing 21, a motor 23 fixed inside the telescopic housing 21, and a gear drive structure 24 that is simultaneously connected to the motor 23 and the telescopic rod 22. When the motor 23 rotates, it drives the telescopic rod 22 to expand and contract through the gear drive mechanism 24; the telescopic rod 22 is driven to expand and contract through the gear drive structure 24, thereby realizing the height change of the lifting table. When specifically driving, the rotation of the motor 23 drives the action of the gear drive structure 24, and finally drives the telescopic rod 22 to extend or shorten. The telescopic rod 22 is an existing technology in the field of lifting tables, and how it specifically realizes extension or contraction through rotational drive will not be elaborated here.

[0035] In the embodiment of this utility model, by arranging the telescopic rod 22, the motor 23 and the gear drive mechanism 24 all inside the telescopic housing 21, the tabletop 3 does not need to carry the existing motor box, that is, the installation steps of the motor box are simplified, the redundant and cumbersome operations are reduced, the installation operation is more efficient, and the installers are more relaxed in actual work. Compared with the existing technology, it not only solves the problems of cumbersome installation and lack of load-bearing capacity of the external motor box, but also can meet more application scenarios, and the appearance is also optimized. Coupled with the feature of only having one table leg, there will be no noise generated by the friction of multiple table legs, providing a quieter and more comfortable working environment for users.

[0036] Regarding the specific structural form of the gear drive structure 24, as Figures 4 to 6 shown in the figure, the gear drive structure 24 includes a worm 241, a worm wheel 242 meshing with the worm 241, a first bevel gear 243 coaxially fixed on the worm wheel 242, and a second bevel gear 244 arranged on the telescopic rod 22. The first bevel gear 243 meshes with the second bevel gear 244. Thus, during specific driving, as Figure 5 shown in the figure, the motor 23 drives the rotation of the worm 241. The axial direction of the worm wheel 242 is perpendicular to that of the worm 241. Since the first bevel gear 243 is coaxially fixed on the worm wheel 242, the first bevel gear 243 can rotate synchronously with the worm wheel 242. The axial direction of the second bevel gear 244 is perpendicular to that of the first bevel gear 243, that is, parallel to the worm wheel 242. The rotation of the first bevel gear 243 drives the rotation of the second bevel gear 244. The second bevel gear 244 is connected to the driving end of the telescopic rod 22, and the rotation of the second bevel gear 244 drives the telescopic rod 22 to extend or retract. Through the above arrangement, due to the structural form of the worm wheel 242 and the worm 24, the telescopic rod 22 has a greater driving force during lifting and lowering, thereby further improving the load-bearing capacity of the lifting seat.

[0037] Regarding the specific installation structure of the motor 23, as Figure 6 shown in the figure, a damping plate 23a is fixed at the head end of the motor 23. The shape of the damping plate 23a is adapted to the internal cross-section of the telescopic housing 21. It should be noted here that at the corner positions of the damping plate 23a, there are damping studs 23a1 protruding from the edge of the damping plate 23a. The outer wall of the damping studs 23a1 is in pressing contact with the inner wall of the telescopic housing 21. It should be noted here that in the embodiment of the present invention, through the elastic deformation ability of the damping studs 23a1, the outer wall of the damping plate 23a can also be closely attached and maintained inside the telescopic housing 21.

[0038] On the basis of the above embodiment, a connection seat 23b is fixed at the tail end of the motor 23. The cross-section of the connection seat 23b is adapted to the inner wall cross-section of the telescopic housing 21, and there is a connection hole on the connection seat 23b. As Figure 6 shown in the figure, in the embodiment of the present invention, through the cross-sections of the damping plate 23a and the connection seat 23b being adapted to the inner wall cross-section of the telescopic housing 21, after the damping plate 23a and the connection seat 23b are adapted to the inner wall cross-section of the telescopic housing 21, both the motor 23 and the gear drive mechanism are arranged in the telescopic housing 21; the damping plate 23a and the connection seat 23b do not need to have the same shape and structure, and it is required that they can be adapted to the telescopic housing 21, realizing the diversity of the design of the damping plate 23a and the connection seat 23b; the damping studs 23a1 protrude from the damping plate 23a, and during installation, the damping studs 23a1 will be in pressing contact with the inner wall of the telescopic housing 21, improving the reliability of the installation of the motor 23.

[0039] In some embodiments of the present utility model, the structure of the tabletop 3 is as follows Figure 7 shown. The connecting frame is composed of a frame body 31a and a connecting plate 31b connected to the center of the frame body 31a. The frame body 31a is provided with holes, which are adapted to the holes on the tabletop 3 for installation and connection. Similarly, the holes provided on the connecting plate 31b are adapted to the holes on the connecting seat 23b; the tabletop 3, the connecting frame and the connecting seat 23b are connected in sequence from top to bottom. It should be noted that in specific implementation, there are various connection methods, such as bolt connection. Bolt connection has high strength, and this connection method can withstand greater tensile and shear forces, and is also easier to install and disassemble, facilitating maintenance and inspection.

[0040] In some embodiments of the present utility model, the specific structure of the telescopic shell 21 is as follows Figure 3 shown. The telescopic shell 21 includes an inner shell 21a and an outer shell 21b sleeved on the inner shell 21a. The outer shell 21b is slidably arranged relative to the inner shell 21a. The motor 23 is fixed in the inner shell 21a, and the other end of the telescopic rod 22 is fixedly connected to the bottom of the outer shell 21b.

[0041] In some embodiments of the present utility model, at least one middle shell 21c is also slidably connected between the outer shell 21b and the inner shell 21a; that is, in the embodiments of the present utility model, the telescopic shell 21 can have multiple sections, so that the lifting height of the lifting table is higher or lower than that of the two-section form.

[0042] As Figure 3 shown, the motor 23 is arranged in the inner shell 21. The bottom of the telescopic rod 22 is fixedly connected to the bottom of the outer shell 21b. A middle shell 21c is also slidably connected between the outer shell 21b and the inner shell 21a. The outer shell 21b is slidably arranged relative to the middle shell 21c, and the middle shell 21c is slidably arranged relative to the inner shell 21a. Through the relative sliding arrangement between the respective shells, the flexibility of the lifting of the lifting table and the adaptability to different height requirements are improved; it should be noted that in specific implementation, the sliding connection between the outer shell 21b and the inner shell 21a includes at least one middle shell 21c.

[0043] In some embodiments of the present utility model, the table bottom 1 includes a bottom plate 11 and a fixing frame 12 fixed to the bottom. The bottom plate 11 has a window 11a for the bottom of the telescopic shell 21 to penetrate, and the fixing frame 12 has holes for connecting to the bottom of the telescopic shell 21.

[0044] On the basis of the above implementation manner, in order to further improve the connection tightness between the table bottom 1 and the telescopic shell 21, a sealing cover 13 is also embedded on the window 11a. The inner wall of the sealing cover 13 contacts the outer wall of the telescopic shell 21, and the four sides extend in the horizontal direction.

[0045] AsFigure 8 As shown in the figure, a sealing cover 13 is provided on the outer wall of the bottom of the telescopic shell 21. The inner wall of the sealing cover 13 is in contact with the outer wall of the telescopic shell 21. Then, the telescopic shell 21 nested with the sealing cover 13 is passed through the window 11a in the bottom plate 11. The inner cross-section of the window 11a is adapted to the shape of the sealing cover 13. Finally, the bottom of the telescopic shell 21 and the fixing frame 12 are connected to their corresponding hole positions. It should be noted here that in specific implementation, several foot pads can be provided at the landing support of the fixing frame 12. The setting of the foot pads avoids the direct contact between the device and the ground, preventing the wear and damage of the ground caused by the device. The setting of the sealing cover 13 makes the cooperation between the telescopic shell 21 and the bottom plate 11 closer, improving the stability of the device during use.

[0046] Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A single-leg column lifting structure, characterized in that Comprising: Under the table; A lifting column assembly, one end of which is vertically fixed on the under-table; A tabletop, which is vertically and fixedly connected to the other end of the lifting column assembly; Wherein, the lifting column assembly includes a telescopic shell, a telescopic rod with one end connected to the bottom of the telescopic shell and arranged parallel to the telescopic shell inside the telescopic shell, a motor fixed inside the telescopic shell, and a gear drive structure simultaneously connected to the motor and the telescopic rod. When the motor rotates, the telescopic rod is driven to expand and contract through the gear drive structure.

2. The single-leg column lifting structure according to claim 1, wherein The gear drive structure includes a worm connected to the output shaft of the motor, a worm gear meshing with the worm, a first bevel gear coaxially fixed on the worm gear, and a second bevel gear arranged on the telescopic rod, and the second bevel gear meshes with the first bevel gear.

3. The single-leg column lifting structure according to claim 2, wherein A damping plate is fixed at the head end of the motor, and the shape of the damping plate is adapted to the internal cross-section of the telescopic shell.

4. The single-leg column lifting structure according to claim 3, wherein, At the corner positions of the damping plate, there are damping studs protruding from the edge of the damping plate, and the outer wall of the damping studs is in pressing contact with the inner wall of the telescopic shell.

5. The single-leg column lifting structure according to claim 2, characterized in that, A connecting seat is fixed at the tail end of the motor, the cross-section of the connecting seat is adapted to the inner wall cross-section of the telescopic shell, and the connecting seat is provided with a connecting hole.

6. The single-leg column lifting structure according to claim 5, wherein, A connecting frame is further provided at the bottom of the tabletop. The connecting frame includes a frame body and a connecting plate connected to the center of the frame body. The frame body is connected to the tabletop, and the connecting plate is connected to the connecting seat.

7. The single-leg column lifting structure according to claim 2, wherein The telescopic shell includes an inner shell and an outer shell sleeved on the inner shell. The outer shell is slidably arranged relative to the inner shell. The motor is fixed in the inner shell, and the other end of the telescopic rod is fixedly connected to the bottom of the outer shell.

8. The single-leg column lifting structure according to claim 7, characterized in that, At least one middle shell is also slidably connected between the outer shell and the inner shell.

9. The single-leg column lifting structure according to claim 1, characterized in that, The under-table includes a bottom plate and a fixing frame fixed under the bottom plate. A window for the bottom of the telescopic shell to penetrate is provided on the bottom plate, and a hole position connected to the bottom of the telescopic shell is provided on the fixing frame.

10. The single-leg column lifting structure according to claim 9, characterized in that, A sealing cover is also embedded on the window. The inner wall of the sealing cover is in contact with the outer wall of the telescopic shell, and the four sides extend in the horizontal direction.

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