Lifting table frame and lifting table

Abstract

The invention discloses a lifting table frame and a lifting table, and the lifting table frame comprises a cross beam which comprises a first cross beam and a second cross beam, and the first cross beam and the second cross beam are rotatably connected; the side beams comprise a first side beam and a second side beam, and the opposite ends of the first side beam and the second side beam are rotationally connected with the cross beam; the top of the lifting stand column is rotationally connected with the cross beam; and the foot margin is detachably connected to the bottom of the lifting stand column. The first cross beam and the second cross beam are arranged to be of a structure capable of being folded relatively, the first side beam, the second side beam and the lifting stand column are arranged to be of a structure capable of being folded relative to the cross beams, and the ground feet and the lifting stand column are arranged to be of a detachable structure, so that the packaging space occupied by the lifting table frame is greatly reduced, and transportation is facilitated. A user only needs to rotate the lifting stand columns, the side beams and the cross beams, the lifting table frame in the folded state in the packaging process can be unfolded to be in the use state, the box can be disassembled by himself / herself to complete installation without tools, and the assembly difficulty of the user by himself / herself is reduced.

Description

Technical Field

[0001] The present invention belongs to the field of furniture, and particularly relates to a lifting table frame and a lifting table. Background Art

[0002] With the development of technology and the improvement of living standards, lifting tables with lifting functions are increasingly favored by the public and are used more and more widely. Currently, the lifting tables on the market include a tabletop and a table frame installed under the tabletop for supporting the tabletop. The table frame has crossbeams, lifting columns installed at both ends of the crossbeams, and feet installed at the bottoms of the lifting columns. Because the overall volume of the lifting table is large, for the convenience of packaging and transportation, the tabletop and the table frame are usually disassembled into multiple parts for packaging.

[0003] Although the above packaging method reduces the packaging volume, after the user receives it, they need to assemble the crossbeams, lifting columns, feet, and tabletop in sequence, which is difficult to assemble and the user experience is poor. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a lifting table frame and a lifting table to solve the problem of difficult assembly after the user receives the lifting table.

[0005] To solve the above technical problem, the present invention adopts the following technical solution: A lifting table frame includes: crossbeams, including a first crossbeam and a second crossbeam that extend horizontally, the first crossbeam and the second crossbeam are rotatably connected, and the first crossbeam and the second crossbeam are rotated to switch between a use state where they are coaxially arranged and a folded state where they are close to each other; side beams, there are two groups, the two groups of side beams are respectively horizontally arranged at both ends of the crossbeams, each group of side beams includes a first side beam and a second side beam, the opposite ends of the first side beam and the second side beam are rotatably connected to the crossbeams, and the first side beam and the second side beam are rotated to switch between a use state perpendicular to the crossbeams and a folded state close to the crossbeams; lifting columns, there are two, the two lifting columns are respectively vertically arranged at both ends of the crossbeams to drive the crossbeams to lift, the tops of the lifting columns are rotatably connected to the crossbeams, and the two lifting columns are rotated in the direction of approaching each other to fold relative to the crossbeams; feet, detachably connected to the bottoms of the lifting columns, and the feet extend horizontally to support the lifting columns. The technical solution has the following technical effects:

[0006] In the present invention, by setting the first cross beam and the second cross beam into a relatively foldable structure, setting the first side beam, the second side beam and the lifting column into a structure that can be folded relative to the cross beam, and setting the floor feet and the lifting column into a detachable structure, when packaging the lifting table frame, the cross beam can be folded to shorten the packaging length occupied by the cross beam, and the side beam and the lifting column without the floor feet installed can be folded relative to the cross beam, so that the side beam and the lifting column are respectively arranged side by side on different side parts of the cross beam, greatly reducing the packaging space occupied by the lifting table frame and facilitating transportation. After the user receives the lifting table frame, only by rotating the lifting column, the side beam and the cross beam, the lifting table frame in the folded state in the package can be unfolded into the use state, and then the floor feet can be installed at the bottom of the lifting column to complete the installation of the lifting table frame. There is no need to align and lock the installation of the cross beam, the side beam and the lifting column. The whole installation process is simple and easy to operate. After receiving the package, the user can unpack and complete the installation without the aid of tools, reducing the difficulty of self-assembly for the user, improving the assembly efficiency and enhancing the user experience.

[0007] In the above-mentioned lifting table frame, the lifting column includes a sleeve assembly provided with a connecting plate and a lifting assembly arranged in the sleeve assembly for driving the telescopic movement of the sleeve assembly. The connecting plate is fixed at the top of the sleeve assembly to move up and down with the sleeve assembly, and the sleeve assembly is rotatably connected to the cross beam through the connecting plate. By setting the top of the sleeve assembly into a structure where the connecting plate is directly rotatably connected to the cross beam and arranging the lifting assembly inside the sleeve assembly, the motor of the lifting assembly for driving the telescopic movement of the sleeve assembly is arranged inside the sleeve assembly rather than above the sleeve assembly. When the lifting column rotates relative to the cross beam, only the connecting plate above the sleeve assembly rotates together with the lifting column, and the motor of the lifting assembly does not occupy the space above the sleeve assembly. Thus, when the lifting table frame is in the folded state, the space occupied by the lifting column is reduced and the packaging volume is shrunk.

[0008] In the above-mentioned lifting table frame, when the lifting table frame is packaged and stored, both the cross beam and the side beam are in the folded state, the lifting column is folded relative to the cross beam, and a placement gap is formed between the lifting column and the cross beam through the connecting plate. The floor feet are disengaged from the lifting column and stored in the placement gap. The placement gap is just adapted to the floor feet, and the floor feet disengaged from the lifting column are stored in the placement gap, further reducing the overall packaging volume of the lifting table frame and facilitating packaging and transportation.

[0009] In the above-mentioned lifting table frame, a support groove for cooperating with the cross beam is provided at the top of the connecting plate. A rotating shaft is provided on the cross beam, and a rotating shaft hole is provided on the inner side wall of the support groove. The rotating shaft is horizontally inserted into the rotating shaft hole so that the connecting plate is rotatably connected to the cross beam. When the user rotates the lifting column to switch the lifting column to the use state perpendicular to the cross beam, the inner bottom wall of the support groove abuts against the bottom surface of the cross beam, which can prompt the user that the lifting column has rotated in place and prevent the lifting column from rotating excessively. When the lifting column supports the cross beam, the connecting plate supports and positions the two sides and the bottom of the cross beam at the same time, increasing the contact area, facilitating assembly and having a good support effect.

[0010] In the above-mentioned lifting table frame, a clamping protrusion parallel to the rotating shaft is further provided on the cross beam, and a clamping groove is provided on the inner wall of the support groove. The clamping groove includes an installation part extending longitudinally through the top of the support groove and a stop part extending horizontally from the bottom of the installation groove. The clamping protrusion is inserted into the stop part to prevent the lifting column perpendicular to the cross beam from rotating freely. When the lifting table frame is in the folded state, the clamping protrusion and the clamping groove are in a disengaged state; when the user needs to switch the lifting column to the use state, first rotate the lifting column so that the rotating shaft rotates in the rotating shaft hole, and the clamping protrusion slides into the top of the installation part from the top of the installation part, and then horizontally move the lifting column so that the clamping protrusion is clamped into the stop part by the installation part. At this time, the rotating shaft slides from one end of the rotating shaft hole to the other end, and the installation is completed. The upper and lower ends of the clamping protrusion respectively abut against the stop part to prevent the connecting plate from rotating freely around the rotating shaft, thereby preventing the lifting column from folding freely relative to the cross beam, and the installation is more stable.

[0011] In the above-mentioned lifting table frame, a first locking member and a second locking member are respectively provided at the bottoms of the cross beam and the connecting plate. The first locking member and the second locking member are locked to prevent the clamping protrusion from freely disengaging from the stop part. When the first locking member and the second locking member are locked, the relative displacement of the cross beam and the connecting plate in the horizontal direction can be prevented, that is, the clamping protrusion is prevented from freely disengaging from the stop part, making the installation of the lifting column on the cross beam more stable and reliable, so that the user can install the fixed lifting bracket at the bottom of the table board.

[0012] In the above-mentioned lifting table frame, the first cross beam and the second cross beam are rotatably connected through a hinge assembly. The hinge assembly is detachably connected to the tops of the first cross beam and the second cross beam. The first cross beam and the second cross beam are folded by rotating upward. The hinge assembly is detachably connected to the tops of the first cross beam and the second cross beam so that the cross beam in the unfolded state can only rotate upward around the hinge assembly to switch to the folded state. The first cross beam and the second cross beam rotate upward to fold the cross beam, so that the lifting column will not hinder the folding of the cross beam, and the folding is more convenient.

[0013] In the above-mentioned lifting table frame, a third locking member and a fourth locking member are respectively provided at the bottoms of adjacent ends of the first cross beam and the second cross beam. The third locking member is locked with the fourth locking member to keep the cross beam in the use state. During the process of locking the cross beam to the tabletop, the locked third locking member and fourth locking member can effectively prevent the cross beam from folding freely, reduce the assembly difficulty between the cross beam and the tabletop, and improve the user's assembly experience.

[0014] In the above-mentioned lifting table frame, the lifting table frame further includes a telescopic assembly detachably connected between the first cross beam and the second cross beam. When the telescopic assembly is respectively connected to the first cross beam and the second cross beam, at least one of the first cross beam and the second cross beam is slidably connected to the telescopic assembly to enable the cross beam to expand and contract. By alternately using the hinge assembly and the telescopic assembly, the cross beam has different functions. When the lifting table frame needs to be packaged and transported, the cross beam can be folded to shorten the space length occupied by the cross beam, which is convenient for packaging and transportation; when the table frame needs to be used, the cross beam can be directly unfolded and installed at the bottom of the tabletop, or the hinge assembly can be removed and replaced with the telescopic assembly, and then the cross beam can be adjusted to a length suitable for the tabletop and installed on the tabletop, which has a good supporting effect on the tabletop.

[0015] In the above-mentioned lifting table frame, the telescopic assembly includes a sliding member and a connecting member with sliding holes at both ends. The connecting member covers the ends of the first cross beam and the second cross beam, and the sliding member is fixed on the sides of the first cross beam and the second cross beam and horizontally penetrates through the sliding holes to be slidably connected to the sliding holes. The sliding connection between the connecting member and the first cross beam and the second cross beam can be realized by inserting the connecting member into the sliding holes. The structure is simple, easy to disassemble and assemble, and convenient to use, which improves the user's experience.

[0016] In the above-mentioned lifting table frame, the lifting table frame further includes a controller for controlling the lifting of the lifting column. A receiving groove with an opening facing the tabletop is provided on the cross beam, and the controller is arranged in the receiving groove. An inspection opening is further provided at the bottom of the cross beam, and the inspection opening longitudinally penetrates the cross beam so that the receiving groove communicates with the outside through the inspection opening. Since the cross beam is fixed to the tabletop by screws, an inspection opening is provided at the bottom of the cross beam, so that when the controller fails or is damaged, the maintenance personnel can reach into the inspection opening to repair the controller or take out the controller through the inspection opening for repair. The inspection of the controller can be completed without disassembling and installing the cross beam and the tabletop, which greatly reduces the inspection difficulty of the controller and further reduces the maintenance difficulty of the lifting table. A single maintenance personnel can complete it.

[0017] In the above-mentioned lifting table frame, a cover plate is further provided at the bottom of the cross beam. The cover plate is detachably connected to the cross beam for covering the maintenance opening. When it is necessary to maintain the controller, the maintenance personnel can remove the cover plate. After the controller is maintained, the maintenance personnel can cover the cover plate back onto the maintenance opening to prevent water or dust from accumulating in the receiving groove, thereby avoiding the influence of the accumulated water or dust in the receiving groove on the operation of the controller and extending the service life of the controller.

[0018] In the above-mentioned lifting table frame, the cover plate includes a plate body. One end of the plate body is locked with the cross beam through a locking component. The other end of the plate body is provided with an inclined stop edge. When the cover plate covers the maintenance opening, the stop edge extends into the receiving groove, and the lower surface of the stop edge abuts against the cross beam. When the cover plate covers the maintenance opening, the inclined stop edge extends into the receiving groove, and the lower surface of the stop edge abuts against the cross beam on the side of the maintenance opening. That is, the cross beam limits the vertical position of one end of the plate body through the clamping component, and the cross beam abuts against the stop edge to limit the vertical position of the other end of the plate body, so as to prevent the plate body from freely disengaging from the maintenance opening. While facilitating the installation and disassembly of the plate body, the installation of the plate body is more stable and reliable.

[0019] In the above-mentioned lifting table frame, a stop piece is further provided at the end of the plate body where the stop edge is provided. When the cover plate covers the maintenance opening, the stop piece extends horizontally and abuts against the bottom surface of the cross beam. When the end of the cover plate provided with the stop piece and the stop edge is installed in place, the stop piece abuts against the bottom surface of the cross beam to position the end of the cover plate, preventing the cover plate from continuing to move into the receiving groove. At the same time, the stop edge can abut against the cross beam to prevent the end of the cover plate from freely moving downward from the maintenance opening and disengaging from the maintenance opening, facilitating the installation and disassembly of the cover plate.

[0020] In the above-mentioned lifting table frame, the locking component includes a positioning member fixed in the receiving groove and a clamping member fixed on the plate body. A clamping groove is provided on the clamping member. The positioning member includes a seat body provided with a positioning groove, a ball and a spring provided in the positioning groove. The spring is used to push the ball partially into the clamping groove to make the clamping member and the positioning member clamped. The structure of the spring and the ball makes the locking effect between the positioning member and the clamping member good. At the same time, the maintenance personnel can easily separate the positioning member and the clamping member with force, the operation is simple and convenient, and it will not cause damage to the two, extending the service life.

[0021] In the above-mentioned lifting table frame, a limiting member is provided at the bottom of the lifting column, a limiting hole for passing through the limiting member is provided on the floor foot, and a clamping member is further provided at the bottom of the floor foot. When the lifting column and the floor foot are in an assembled state, the lower end of the limiting member passes through and extends out of the limiting hole to be clamped with the clamping member, and the limiting member is horizontally inserted into the floor foot on the side of the limiting hole under the pulling of the clamping member. The horizontally inserted limiting member and floor foot can limit the lifting column and the floor foot in the vertical direction to prevent the lifting column and the floor foot from shaking or disengaging in the vertical direction, thereby ensuring the stable locking of the lifting column and the floor foot. During disassembly, simply disconnect the clamping member from the limiting member, and then the lifting column can be moved to remove the limiting member from the limiting hole. The operation is simple and convenient. While the clamping member and the limiting member are stably locked, the lifting column and the floor foot can be assembled without tools. The operation is simple and convenient, greatly reducing the assembly difficulty, facilitating the user to disassemble and assemble independently, and improving the user experience.

[0022] In the above-mentioned lifting table frame, the limiting member includes a vertically extending connecting portion and a horizontally extending limiting portion. The limiting portion is provided on one side of the bottom of the connecting portion. When the clamping member clamps the side of the connecting portion away from the limiting portion, the limiting portion abuts against the bottom surface of the floor foot on one side of the limiting hole. The bottom surface of the floor foot abuts against the top surface of the limiting portion, and the top surface of the floor foot abuts against the bottom surface of the lifting column to achieve the horizontal insertion between the limiting member and the floor foot. By applying a force in the direction of the limiting member to the connecting portion through the clamping member, the position of the limiting member is always kept below the floor foot on the side of the limiting hole, that is, the limiting portion is kept in contact with the floor surface of the floor foot. The setting of the connecting portion can not only limit the horizontal insertion between the limiting member and the floor foot, but also the part extending out of the limiting hole is convenient for the user to check whether the limiting member is inserted into the limiting hole in place, so as to clamp the clamping member and the limiting member.

[0023] In the above-mentioned lifting table frame, a plugging protrusion is provided on one side of the limiting member. When the limiting member is clamped with the clamping member, the plugging protrusion is inserted into the inner wall of the limiting hole. The structure is simple, and the plugging is stable and reliable.

[0024] In the above-mentioned lifting table frame, the clamping member includes a positioning block fixed at the bottom of the floor foot and a clamping ring rotatably connected to the positioning block. The clamping ring pulls the limiting member in the direction of the positioning block by sleeving on the limiting member, so that the limiting member and the floor foot are kept inserted. After the limiting member and the floor foot are horizontally inserted in place, rotate the clamping ring so that the other end of the clamping ring is sleeved on the limiting member. The inner ring of the clamping ring abuts against the inner wall of the clamping groove to pull the limiting member in the direction of the positioning block (i.e., the direction of the limiting portion), so that the connecting portion and the limiting portion are kept in contact with the floor foot, and further the limiting member and the floor foot are stably kept in the horizontal insertion state. The operation is simple and does not require tools.

[0025] The present invention also provides a lifting table, which includes a tabletop and a lifting table frame installed at the bottom of the tabletop. The lifting table frame is the lifting table frame in the above technical solution, and the cross beam and the side beam are installed at the bottom of the tabletop.

[0026] The features and advantages of the present invention will be disclosed in detail in the following specific embodiments and the accompanying drawings. Brief Description of the Drawings

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0028] Figure 1 is a perspective view of the lifting table;

[0029] Figure 2 is Figure 1 an enlarged view of part A of

[0030] Figure 3 is a usage state diagram of the lifting table frame;

[0031] Figure 4 is Figure 3 an enlarged view of part B of

[0032] Figure 5 is a folding schematic diagram of the cross beam, side beam and lifting column;

[0033] Figure 6 is a packaging state diagram of the lifting table frame;

[0034] Figure 7 is a partial schematic diagram of the lifting column;

[0035] Figure 8 is a partial schematic diagram of the cross beam in the usage state;

[0036] Figure 9 is a partial schematic diagram of the cross beam in the folded state;

[0037] Figure 10 is a schematic diagram of a telescopic component installed on the cross beam;

[0038] Figure 11 is a schematic diagram of the table frame and the telescopic component disengaged;

[0039] Figure 12 is a schematic diagram of a cover plate installed at the inspection opening of the cross beam;

[0040] Figure 13 is a schematic diagram of the inspection opening of the cross beam without a cover plate installed;

[0041] Figure 14 is a schematic diagram when the cover plate of the inspection opening is disassembled and assembled Figure One ;

[0042] Figure 15Schematic diagram for disassembly and assembly of the cover plate of the inspection opening Figure Two ;

[0043] Figure 16 Isometric view of the cover plate;

[0044] Figure 17 Cross-sectional view of the cover plate;

[0045] Figure 18 Cross-sectional view of the crossbeam with the cover plate installed;

[0046] Figure 19 Schematic diagram of the floor feet installed at the bottom of the lifting column;

[0047] Figure 20 Cross-sectional view of the floor feet installed at the bottom of the lifting column;

[0048] Figure 21 Schematic diagram of the bottom of the lifting column;

[0049] Figure 22 Partial schematic diagram of the floor feet.

[0050] Reference numerals:

[0051] 100, tabletop;

[0052] 200, crossbeam; 210, first crossbeam; 211, third locking member; 212, inspection opening; 213, sealing edge; 220, second crossbeam; 221, fourth locking member; 230, receiving groove; 231, controller; 240, rotating shaft; 250, clamping protrusion; 260, first locking member; 270, hinge assembly; 271, first blade; 272, second blade; 273, rotating member; 280, telescopic assembly; 281, sliding member; 282, connecting member; 2821, sliding hole; 291, first relief groove; 292, second relief groove;

[0053] 300, side beam; 310, first side beam; 320, second side beam;

[0054] 400, lifting column; 410, sleeve assembly; 420, connecting plate; 421, support groove; 422, rotating shaft hole; 423, clamping groove; 4231, installation part; 4232, stop part; 424, second locking member; 430, placement gap; 440, limiting member; 441, connecting part; 442, limiting part; 443, clamping groove; 444, inserting protrusion;

[0055] 500, floor feet; 510, base; 511, upper housing; 512, lower housing; 513, installation gap; 520, limiting hole; 530, clamping member; 531, positioning block; 532, clamping ring; 540, support protrusion; 550, relief gap;

[0056] 600, cover plate; 610, plate body; 611, operation hole; 620, clamping assembly; 621, positioning member; 6211, seat body; 6212, positioning groove; 6213, ball; 6214, spring; 622, clamping member; 6221, clamping groove; 630, stop edge; 640, stop piece; 650, guiding edge. Specific embodiments

[0057] A lifting table frame proposed by the present invention includes: a cross beam, including a first cross beam and a second cross beam extending horizontally, the first cross beam and the second cross beam are rotatably connected, and the first cross beam and the second cross beam are rotated to switch between a use state where they are coaxially arranged and a folded state where they are close to each other; side beams, there are two groups, the two groups of side beams are respectively horizontally arranged at both ends of the cross beam, each group of side beams respectively includes a first side beam and a second side beam, the opposite ends of the first side beam and the second side beam are rotatably connected to the cross beam, and the first side beam and the second side beam are rotated to switch between a use state perpendicular to the cross beam and a folded state close to the cross beam; lifting columns, there are two, the two lifting columns are respectively vertically arranged at both ends of the cross beam to drive the cross beam to lift, the top of the lifting column is rotatably connected to the cross beam, and the two lifting columns are rotated towards each other to fold relative to the cross beam; floor feet, detachably connected to the bottom of the lifting column, and the floor feet extend horizontally to support the lifting column. By setting the first cross beam and the second cross beam into a relatively foldable structure, setting the first side beam, the second side beam and the lifting column into a relatively foldable structure relative to the cross beam, and setting the floor feet and the lifting column into a detachable structure, when packaging the lifting table frame, the cross beam can be folded to shorten the packaging length occupied by the cross beam, and the side beam and the lifting column without the floor feet installed can be folded relative to the cross beam, so that the side beam and the lifting column are respectively arranged side by side on different sides of the cross beam, greatly reducing the packaging space occupied by the lifting table frame and facilitating transportation. After the user receives the lifting table frame, only need to rotate the lifting column, the side beam and the cross beam, the lifting table frame in the folded state in the package can be unfolded into the use state, and then the floor feet are installed at the bottom of the lifting column to complete the installation of the lifting table frame. There is no need to align and lock the installation of the cross beam, the side beam and the lifting column. The whole installation process is simple and easy to operate. After receiving the package, the user can unpack and complete the installation by himself without tools, reducing the difficulty of self-assembly for the user, improving the assembly efficiency and enhancing the user experience.

[0058] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the drawings of the embodiments of the present invention. However, the following embodiments are only the preferred embodiments of the present invention and not all of them. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative efforts all belong to the protection scope of the present invention.

[0059] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0060] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more, unless otherwise clearly defined.

[0061] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0063] Embodiment 1:

[0064] A lifting table frame, such as Figures 1 to 22As shown in the figure, it includes a cross beam 200, two groups of side beams 300, two lifting columns 400 and two floor feet 500. The two groups of side beams 300 are respectively horizontally arranged at both ends of the cross beam 200, and the two lifting columns 400 are respectively vertically arranged at both ends of the cross beam 200 to drive the cross beam 200 and the side beams 300 to lift. The top of the lifting column 400 is rotatably connected to the cross beam 200. The two lifting columns 400 can rotate in the direction of approaching each other to fold relative to the cross beam 200, so that the two lifting columns 400 are respectively arranged in parallel on the bottom surface of the cross beam 200. The lifting column 400 and the cross beam 200 are arranged side by side. The two floor feet 500 are respectively installed at the bottom of the two lifting columns 400. The floor feet 500 support the lifting column 400 by horizontal extension, and the connection between the floor feet 500 and the lifting column 400 is detachable. The cross beam 200 includes a first cross beam 210 and a second cross beam 220 that extend horizontally. The adjacent ends of the first cross beam 210 and the second cross beam 220 are rotatably connected. The two can be rotated to switch the cross beam 200 between the use state and the folded state. When the cross beam 200 is in the use state, the first cross beam 210 and the second cross beam 220 are coaxially arranged; when the cross beam 200 is in the folded state, the free ends of the first cross beam 210 and the second cross beam 220 approach each other so that the first cross beam 210 and the second cross beam 220 are arranged in parallel side by side. Each group of side beams 300 respectively includes a first side beam 310 and a second side beam 320. The opposite ends of the first side beam 310 and the second side beam 320 are rotatably connected to the cross beam 200. The first side beam 310 and the second side beam 320 can be rotated to switch the side beam 300 between the use state and the folded state. When the side beam 300 is in the use state, the first side beam 310 and the second side beam 320 are coaxially arranged and are respectively perpendicular to the cross beam 200; when the side beam 300 is in the folded state, the free ends of the first side beam 310 and the second side beam 320 approach the cross beam 200 so that the first side beam 310 and the second side beam 320 are arranged in parallel side by side on the two side surfaces of the cross beam 200.

[0065] In the present invention, by setting the first cross beam 210 and the second cross beam 220 into a relatively foldable structure, setting the first side beam 310, the second side beam 320 and the lifting column 400 into a relatively foldable structure with respect to the cross beam 200, and setting the floor feet 500 and the lifting column 400 into a detachable structure, when packaging the lifting table frame, the cross beam 200 can be folded to shorten the packaging length occupied by the cross beam 200, and the side beam 300 and the lifting column 400 without the floor feet 500 installed can be folded relative to the cross beam 200, so that the side beam 300 and the lifting column 400 are respectively arranged side by side on different side parts of the cross beam 200, greatly reducing the packaging space occupied by the lifting table frame and facilitating transportation. After the user receives the lifting table frame, only by rotating the lifting column 400, the side beam 300 and the cross beam 200, the lifting table frame in the folded state in the package can be unfolded into the use state, and then the floor feet 500 can be installed at the bottom of the lifting column 400 to complete the installation of the lifting table frame, without the need for alignment and locking installation of the cross beam 200, the side beam 300 and the lifting column 400. The whole installation process is simple and easy to operate. After receiving the package, the user can unpack and complete the installation by himself without the aid of tools, reducing the difficulty of self-assembly for the user, improving the assembly efficiency and enhancing the user experience.

[0066] In this embodiment, the lifting column 400 includes a sleeve assembly 410 and a lifting assembly. The lifting assembly is installed inside the sleeve assembly 410 for driving the sleeve assembly 410 to expand and contract. The sleeve assembly 410 drives the cross beam 200 to lift through expansion and contraction. A connecting plate 420 that moves up and down with the sleeve assembly 410 is fixed at the top of the sleeve assembly 410. The sleeve assembly 410 is rotatably connected to the cross beam 200 through the connecting plate 420. A receiving groove 230 with an upward opening is formed on the cross beam 200, and a controller 231 for driving the lifting assembly to lift is hidden in the receiving groove 230 of the cross beam 200. By setting the top of the sleeve assembly to be directly rotatably connected to the cross beam 200 through the connecting plate 420 and arranging the lifting assembly inside the sleeve assembly 410, the motor of the lifting assembly for driving the sleeve assembly 410 to expand and contract is arranged inside the sleeve assembly 410 instead of above the sleeve assembly 410. When the lifting column 400 rotates relative to the cross beam 200, only the connecting plate 420 above the sleeve assembly 410 rotates together with the lifting column 400, and the motor of the lifting assembly does not occupy the space above the sleeve assembly 410. Thus, when the lifting table frame is in the folded state, the space occupied by the lifting column 400 is reduced and the packaging volume is shrunk.

[0067] As Figure 5As shown, when the lifting table frame is packaged and stored, the cross beam 200 and the side beam 300 are both in a folded state. The lifting column 400 is folded relative to the cross beam 200. A placement gap 430 is formed between the parallel lifting column 400 and the cross beam 200 through the connecting plate 420. The width of the placement gap 430 is just adapted to the thickness of the floor feet 500. The floor feet 500 separated from the lifting column 400 are stored in the placement gap 430, further reducing the overall packaging volume of the lifting table frame and facilitating packaging and transportation.

[0068] As Figure 7 shown, the top of the connecting plate 420 in this embodiment is provided with a support groove 421. The support groove 421 is used to cooperate with the cross beam 200. A rotating shaft 240 is provided on the cross beam 200. A rotating shaft hole 422 is provided on the inner side wall of the support groove 421. The rotating shaft hole 422 can penetrate or not penetrate the connecting plate 420. The rotating shaft 240 is horizontally inserted into the rotating shaft hole 422 to rotatably connect the connecting plate 420 with the cross beam 200. When the lifting column 400 is in a use state perpendicular to the cross beam 200, the cross beam 200 is stuck in the support groove 421 and abuts against the inner wall of the support groove 421. During the process that the user rotates the lifting column 400 to switch the lifting column 400 to a use state perpendicular to the cross beam 200, the inner bottom wall of the support groove 421 abuts against the bottom surface of the cross beam 200, which can prompt the user that the lifting column 400 rotates in place and avoid excessive rotation of the lifting column 400. When the lifting column 400 supports the cross beam 200, the connecting plate 420 supports and limits both sides and the bottom of the cross beam 200, increasing the contact area, facilitating assembly and having a good support effect.

[0069] In this embodiment, a clamping protrusion 250 is further provided on the cross beam 200. The clamping protrusion 250 is arranged parallel to the rotating shaft 240. A clamping groove 423 is provided on the inner wall of the support groove 421. The clamping groove 423 includes an installation part 4231 and a stop part 4232. The installation part 4231 extends longitudinally and penetrates the top of the support groove 421. The stop part 4232 extends horizontally from the bottom of the installation groove. The rotating shaft hole 422 extends horizontally, so that the rotating shaft 240 can slide or rotate horizontally in the rotating shaft hole 422. As Figure 5 and Figure 6As shown in the figure, when the lifting table frame is in the folded state, the clamping protrusion 250 and the clamping groove 423 are disengaged; when the user needs to switch the lifting column 400 to the use state, first rotate the lifting column 400 so that the rotating shaft 240 rotates in the rotating shaft hole 422, and the clamping protrusion 250 slides into the top of the mounting portion 4231 from the top of the mounting portion 4231. Then, horizontally move the lifting column 400 so that the clamping protrusion 250 is snapped into the stopping portion 4232 from the mounting portion 4231. At this time, the rotating shaft 240 slides from one end of the rotating shaft hole 422 to the other end, and the installation is completed. The upper and lower ends of the clamping protrusion 250 are respectively abutted against the stopping portion 4232 to prevent the connecting plate 420 from freely rotating around the rotating shaft 240, thereby preventing the lifting column 400 from freely folding relative to the cross beam 200, and the installation is more stable.

[0070] A first locking member 260 and a second locking member 424 are respectively provided at the bottoms of the cross beam 200 and the connecting plate 420. When the first locking member 260 and the second locking member 424 are locked, the relative displacement of the cross beam 200 and the connecting plate 420 in the horizontal direction can be prevented, that is, the clamping protrusion 250 is prevented from freely disengaging from the stopping portion 4232, so that the installation of the lifting column 400 on the cross beam 200 is more stable and reliable, so that the user can install the fixed lifting bracket at the bottom of the table board 100. The first locking member 260 and the second locking member 424 in this embodiment can have various structures, such as the structure of a locking screw and a locking nut inserted horizontally, or the structure of a plug and a socket inserted horizontally, etc. Preferably, the first locking member 260 includes a fixed block and a clamping ring. The fixed block is fixed at the bottom of the cross beam 200. One end of the clamping ring is rotatably connected to the fixed block. The second locking member 424 is a hook fixed at the bottom of the connecting plate 420. The clamping ring can be rotated to be clamped or disengaged from the hook. When the hook is clamped in the clamping ring, the first locking member 260 and the second locking member 424 are locked. The structure is simple, which is convenient for the user to operate and reduces the time required to lock the first locking member 260 and the second locking member 424. In this embodiment, first avoidance grooves 291 are provided at the bottoms of the cross beam 200 and the connecting plate 420, and the first locking member 260 and the second locking member 424 are respectively arranged in the two first avoidance grooves 291, which is more beautiful.

[0071] Such as Figure 3 And Figure 4As shown, the first beam 210 and the second beam 220 are rotatably connected via a hinge assembly 270, and the hinge assembly 270 is detachably connected to the top of the first beam 210 and the second beam 220, so that the beam 200 in the unfolded state can only be rotated upward around the hinge assembly 270 to switch to the folded state. The first beam 210 and the second beam 220 are rotated upward to fold the beam 200, so that the lifting column 400 will not hinder the folding of the beam 200, and the folding is more convenient. In this embodiment, a third locking member 211 and a fourth locking member 221 are respectively provided at the bottom of the adjacent ends of the first crossbeam 210 and the second crossbeam 220. After the user unfolds the crossbeam 200, the third locking member 211 and the fourth locking member 221 can be locked to limit the first crossbeam 210 and the second crossbeam 220, so that the crossbeam 200 remains in the unfolded state coaxial with the first crossbeam 210 and the second crossbeam 220. In the process of locking the crossbeam 200 to the table top 100, the locked third locking member 211 and the fourth locking member 221 can effectively prevent the crossbeam 200 from folding freely, reduce the difficulty of assembling the crossbeam 200 and the table top 100, and improve the user's assembly experience. In this embodiment, preferably, the structures of the third locking member 211 and the fourth locking member 221 are respectively the same as the structures of the first locking member 260 and the second locking member 424. In this embodiment, second avoidance grooves 292 are provided at the bottoms of the first cross beam 210 and the second cross beam 220 , and the third locking member 211 and the fourth locking member 221 are respectively disposed in the two second avoidance grooves 292 .

[0072] The hinge assembly 270 in this embodiment is a hinge. Figure 4 As shown, the hinge includes a first leaf 271, a second leaf 272 and a rotating member 273. The first leaf 271 and the second leaf 272 are rotatably connected to the two sides of the rotating member 273. The first leaf 271 and the second leaf 272 are used to connect the first beam 210 and the second beam 220 respectively. Through a simple structure, the rotation of the first beam 210 and the second beam 220 can be realized, the space occupied by the hinge assembly 270 is reduced, and the hinge assembly 270 is prevented from affecting the rotation of the first beam 210 and the second beam 220, while reducing the cost. Of course, it can be understood that the hinge assembly 270 can be provided with one or more. A single hinge assembly 270 simplifies the installation steps of the entire beam 200, and multiple hinge assemblies 270 are arranged side by side to enhance the strength of the hinge joint of the first beam 210 and the second beam 220.

[0073] The lifting table frame in this embodiment further includes a telescopic component 280, and one end of the telescopic component 280 adjacent to the first cross beam 210 and the second cross beam 220 is detachably connected; when the length of the cross beam 200 is insufficient to support the table board 100, the user can detach the hinge component 270 and install the telescopic component 280 on the cross beam 200, so that the telescopic component 280 is respectively connected to the first cross beam 210 and the second cross beam 220, and at least one of the first cross beam 210 and the second cross beam 220 is slidably connected to the telescopic component 280 to make the cross beam 200 telescopic. When the telescopic component 280 is installed on the cross beam 200, one end of the telescopic component 280 is fixed on the first cross beam 210 and the other end is slidably connected to the second cross beam 220; or, one end of the telescopic component 280 is fixed on the second cross beam 220 and the other end is slidably connected to the first cross beam 210; or, both ends of the telescopic component 280 are respectively slidably connected to the first cross beam 210 and the second cross beam 220 to make the cross beam 200 telescopic. By replacing and using the hinge component 270 and the telescopic component 280, the cross beam 200 has different functions. When the hinge component 270 is installed on the cross beam 200 for use, the first cross beam 210 and the second cross beam 220 can rotate around the hinge component 270 to switch between the unfolded state where the first cross beam 210 and the second cross beam 220 are coaxial and the folded state where the first cross beam 210 and the second cross beam 220 are overlapped. When the telescopic component 280 is installed on the cross beam 200 for use, the first cross beam 210 and the second cross beam 220 can adjust the length of the cross beam 200 through the telescopic component 280. When it is necessary to package and transport the lifting table frame, the cross beam 200 can be folded to shorten the space length occupied by the cross beam 200, which is convenient for packaging and transportation; when it is necessary to use the table frame, the cross beam 200 can be directly unfolded to be installed at the bottom of the table board 100, or the hinge component 270 can be removed and replaced with the telescopic component 280 to adjust the cross beam 200 to a length suitable for the table board 100 and then install it on the table board 100, and the supporting effect on the table board 100 is good. The hinge component 270 and the telescopic component 280 enable the cross beam 200 to have the function of being telescopic on the basis of being foldable, so that the cross beam 200 can be applicable to table boards 100 of various sizes, with a wide application range, and at the same time, it is convenient for packaging, reducing the packaging difficulty and packaging cost. The third locking member 211 and the fourth locking member 221 are respectively arranged in the two second avoidance grooves 292. While being beautiful, it can also effectively prevent the third locking member 211 and the fourth locking member 221 from affecting the installation of the telescopic component 280.

[0074] Both ends of the telescopic component 280 in this embodiment are detachably connected to the first cross beam 210 and the second cross beam 220 respectively. The telescopic component 280 includes a sliding member 281 and a connecting member 282. Slide holes 2821 are provided at both ends of the connecting member 282, and the slide holes 2821 extend horizontally. The connecting member 282 covers the ends of the first cross beam 210 and the second cross beam 220. The sliding member 281 is fixed to the sides of the first cross beam 210 and the second cross beam 220 and horizontally penetrates through the slide holes 2821 to be slidably connected to the slide holes 2821. By inserting the connecting member 282 into the slide holes 2821, the sliding connection between the connecting member 282 and the first cross beam 210 and the second cross beam 220 can be realized. The structure is simple, easy to disassemble and assemble, convenient to use, and improves the user experience. Preferably, the sliding member 281 is a locking screw. The locking screw passes through and is fixed to the cross beam 200 by sliding. The head of the locking screw is located on the side of the sliding member 281 away from the cross beam 200. When the locking screw is not locked with the cross beam 200, the width of the gap between the head of the locking screw and the cross beam 200 is greater than the width of the connecting member 282, so that the locking screw can slide horizontally in the slide holes 2821 to adjust the length of the cross beam 200. After the length of the cross beam 200 is adjusted, tighten the locking screw so that the head of the locking screw and the side wall of the support beam jointly clamp the connecting member 282, and the cross beam 200 is maintained at the required telescopic position to avoid the free change of the adjusted length of the cross beam 200, and the operation is convenient. A plurality of (two or more) slide holes 2821 are provided at both ends of the connecting member 282 respectively. The plurality of slide holes 2821 are arranged at intervals along the same horizontal line. The slide holes 2821 arranged at intervals enable the cross beam 200 to have a larger adjustment range, and at the same time, it can avoid the excessive length of a single slide hole 2821 resulting in too low strength of the connecting member 282, avoid deformation of the connecting member 282, and extend the service life of the connecting member 282.

[0075] Such as Figure 13As shown, in this embodiment, an inspection opening 212 is further provided at the bottom of the cross beam 200. The inspection opening 212 runs longitudinally through the cross beam 200 so that the accommodation groove 230 communicates with the outside through the inspection opening 212. By providing the accommodation groove 230 on the cross beam 200 and placing the controller 231 that controls the lifting and lowering of the lifting column 400 in the accommodation groove 230, the controller 231 is hidden, preventing the controller 231 from being exposed externally or installed on the top of the lifting column 400, making it more aesthetically pleasing and also preventing the user from colliding with the controller 231 when using the lifting table. Since the cross beam 200 is fixed to the table top 100 by screws, an inspection opening 212 is provided at the bottom of the cross beam 200, enabling maintenance personnel to reach into the inspection opening 212 to repair the controller 231 or remove the controller 231 through the inspection opening 212 when the controller 231 fails or is damaged, without having to disassemble and reinstall the cross beam 200 and the table top 100, greatly reducing the difficulty of repairing the controller 231 and thus the maintenance difficulty of the lifting table, which can be completed by a single maintenance personnel.

[0076] As Figure 10 shown, in order to prevent a large amount of dust or liquid from entering the accommodation groove 230 of the cross beam 200 through the inspection opening 212 and being difficult to clean, in this embodiment, a cover plate 600 covering the inspection opening 212 is further provided at the bottom of the cross beam 200. The cover plate 600 is detachably connected to the cross beam 200. When the controller 231 needs to be repaired, the maintenance personnel can remove the cover plate 600. After repairing the controller 231, the maintenance personnel can re-cover the cover plate 600 onto the inspection opening 212 to prevent water or dust from accumulating in the accommodation groove 230, thereby avoiding the accumulated water or dust in the accommodation groove 230 affecting the operation of the controller 231 and extending the service life of the controller 231.

[0077] In this embodiment, as Figure 12 and Figure 16 shown, the cover plate 600 includes a plate body 610. One end of the plate body 610 is locked with the cross beam 200 through a clamping assembly 620. The other end of the plate body 610 is provided with a stop edge 630. The stop edge 630 is inclined, that is, the included angle between the upper surface of the stop edge 630 and the top surface of the plate body 610 is less than 180 degrees. When the cover plate 600 covers the inspection opening 212, the inclined stop edge 630 extends into the accommodation groove 230, and the lower surface of the stop edge 630 abuts against the cross beam 200 on the side of the inspection opening 212. That is, the cross beam 200 limits one end of the plate body 610 in the vertical direction through the clamping assembly 620, and the cross beam 200 limits the other end of the plate body 610 in the vertical direction by abutting against the stop edge 630, so as to prevent the plate body 610 from freely disengaging from the inspection opening 212. While facilitating the installation and disassembly of the plate body 610, the installation of the plate body 610 is more stable and reliable.

[0078] In order to further limit the end of the plate body 610 provided with the stop edge 630 in the vertical direction, in this embodiment, a stop piece 640 is further provided on the plate body 610. The stop piece 640 is arranged at the end of the plate body 610 and is arranged parallel to the plate body 610. As Figure 11 shown, when the cover plate 600 is closed on the inspection opening 212, the stop piece 640 horizontally extends to the bottom of the cross beam 200 on the side of the inspection opening 212 and abuts against the bottom surface of the cross beam 200; when disassembling the cover plate 600, as Figure 14 and Figure 15 shown, first disconnect the end of the plate body 610 provided with the clamping assembly 620 from the cross beam 200, then rotate the plate body 610 around the other end of the plate body 610. The cross beam 200 moves within the triangular space formed between the stop edge 630 and the stop piece 640, so that the plate body 610 can rotate a certain angle, and then move the plate body 610 obliquely downward to disconnect the plate body 610 from the inspection opening 212 of the cross beam 200; when installing the cover plate 600, first place the plate body 610 obliquely below the inspection opening 212, and align the triangular space formed between the stop edge 630 and the stop piece 640 with the cross beam 200 on the side of the inspection opening 212, so that the cross beam 200 on the side of the inspection opening 212 is clamped between the stop edge 630 and the stop piece 640, and then rotate the other end of the plate body 610 around the end of the stop piece 640 abutting against the cross beam 200 towards the inspection opening 212 until the other end of the plate body 610 is locked with the cross beam 200 through the clamping assembly 620. When the end of the cover plate 600 provided with the stop piece 640 and the stop edge 630 is installed in place, the stop piece 640 abuts against the bottom surface of the cross beam 200 to position the end of the cover plate 600 and prevent the cover plate 600 from continuing to move into the receiving groove 230. At the same time, the stop edge 630 can abut against the cross beam 200 to prevent the end of the cover plate 600 from freely moving downward from the inspection opening 212 to disconnect from the inspection opening 212, which is convenient for the installation and disassembly of the cover plate 600.

[0079] As Figure 16 shown, there are two stop pieces 640 in this embodiment. The two stop pieces 640 are respectively located on both sides of the stop edge 630 and are arranged in a staggered manner with the stop edge 630. By arranging the stop edge 630 and the stop piece 640 in a staggered manner, the production and processing difficulty of the cover plate 600 can be reduced. At the same time, the stop piece 640 and the stop edge 630 cooperate more closely with the cross beam 200 on the side of the inspection opening 212, and the limiting effect is better.

[0080] On both sides of the plate body 610, bent to form a guiding edge 650 perpendicular to the plate body 610. On both sides of the inspection opening 212, bent into the receiving groove 230 to form a sealing edge 213. During the process of covering the cover plate 600 on the inspection opening 212, the guiding edge 650 can guide and align the cover plate 600. When the cover plate 600 is covered on the inspection opening 212, the guiding edge 650 extends into the receiving groove 230, and the side of the guiding edge 650 abuts against the side of the sealing edge 213 to seal the gap between the cover plate 600 and the inspection opening 212, preventing external dust or liquid from entering the receiving groove 230 through the gap between the cover plate 600 and the inspection opening 212, and having a good sealing effect.

[0081] The stop edge 630 in this embodiment is preferably formed by bending the end of the plate body 610, with low processing difficulty. As Figure 17 shown, it is stipulated that the included angle between the stop edge 630 and the plate body 610 is α. Preferably, 30° ≤ α ≤ 60°. By setting the included angle range between the stop edge 630 and the plate body 610 within the range of 30° to 60°, when the plate body 610 horizontally covers the inspection opening 212, the stop edge 630 will not affect its abutting and limiting with the cross beam 200 due to too large an included angle, nor will it affect the rotation of the cover plate 600 during disassembly due to too small an included angle, avoiding too small a rotation angle and making it difficult to disassemble the cover plate 600, and reducing the disassembly and assembly difficulty of the cover plate 600.

[0082] As Figure 12 and Figure 18As shown in the figure, the clamping assembly 620 includes a positioning member 621 and a clamping member 622. The positioning member 621 is fixed in the receiving groove 230 by a locking screw and is located above the inspection opening 212. The clamping member 622 is fixed above one end of the plate body 610 by a locking screw. A clamping groove 6221 is provided on the clamping member 622. The positioning member 621 includes a seat body 6211 fixed on the cross beam 200. A horizontally extending positioning groove 6212 is provided in the seat body 6211. A ball 6213 and a spring 6214 are provided in the positioning groove 6212. The diameter of the notch of the positioning groove 6212 is smaller than the diameter of the ball of the ball 6213 to prevent the ball 6213 from disengaging from the positioning groove 6212. In this embodiment, preferably, the positioning groove 6212 runs through the seat body 6211. There are two balls 6213, and both ends of the spring 6214 are respectively abutted against the two balls 6213 to push the ball 6213 out of the positioning groove 6212. When the cover plate 600 covers the inspection opening 212, the ball 6213 partially extends into the clamping groove 6221 under the push of the spring 6214, so that the clamping member 622 is clamped with the positioning member 621. The structure of the spring 6214 and the ball 6213 enables a good locking effect between the positioning member 621 and the clamping member 622. At the same time, the maintenance personnel can easily separate the positioning member 621 from the clamping member 622 with force. The operation is simple and convenient, and it will not cause damage to the two, thus prolonging the service life. Of course, in another embodiment, the positioning groove may not run through the base, and only one ball is provided. Both ends of the spring are respectively abutted against the inner wall of the positioning groove and the ball to push the ball out of the positioning groove.

[0083] To facilitate the user to disassemble the cover plate 600, an operation hole 611 for the finger to extend into is provided on the plate body 610. The operation hole 611 is located on the side of the plate body 610 close to the clamping assembly 620. When the cover plate 600 needs to be disassembled, the user or the maintenance personnel can extend the finger into the operation hole 611 and pull down the cover plate 600 by bending the finger, which is convenient for applying force. The force applied to the cover plate 600 can disengage the clamping member 622 from the positioning member 621. Setting the operation hole 611 close to the clamping assembly 620 can save more effort.

[0084] In this embodiment, the inspection opening 212 is located on one side of the controller 231. The projection of the controller 231 on the horizontal plane does not coincide with the projection of the inspection opening 212 on the horizontal plane. By staggering the inspection opening 212 from the controller 231, it is possible to avoid the dust entering the receiving groove 230 through the inspection opening 212 from directly accumulating on the controller 231, and it is also possible to avoid the liquid entering the receiving groove 230 through the inspection opening 212 from directly soaking and damaging the controller 231.

[0085] As Figure 5As shown, in this embodiment, a limiting member 440 is provided at the bottom of the lifting column 400 , a limiting hole 520 for passing the limiting member 440 is provided on the foot 500 , and a clamping member 530 is further provided at the bottom of the foot 500 . When assembling the lifting column 400 and the foot 500, first insert the limiting member 440 into the limiting hole 520 along the vertical direction (i.e., the axial direction of the limiting hole 520). When the bottom surface of the lifting column 400 abuts against the top surface of the foot 500, push the lifting column 400 horizontally to one side (i.e., the radial direction of the limiting hole 520) so that the limiting member 440 and the foot 500 are horizontally plugged in, and the limiting member 440 and the foot 500 are limited in the vertical direction. At this time, the bottom of the limiting member 440 extends out of the limiting hole 520, and the clamping member 530 at the bottom of the foot 500 is clamped with the part of the bottom of the limiting member 440 that extends out of the limiting hole 520, and the assembly can be completed, so that the limiting member 440 is pulled by the clamping member 530 to maintain horizontal plugging with the foot 500 on the side of the limiting hole 520. The horizontally plugged limiter 440 and the foot 500 can limit the vertical position between the lifting column 400 and the foot 500 to prevent the lifting column 400 and the foot 500 from shaking or disengaging in the vertical direction, thereby ensuring the stable locking of the lifting column 400 and the foot 500. During disassembly, it is only necessary to disengage the clamping member 530 from the limiter 440 to move the lifting column 400 so that the limiter 440 can be disengaged from the limit hole 520. The operation is simple and convenient. While the clamping member 530 and the limiter 440 are locked stably, the lifting column 400 and the foot 500 can be assembled without the aid of tools. The operation is simple and convenient, which greatly reduces the difficulty of assembly, facilitates users to independently disassemble and assemble, and improves the user experience.

[0086] In this embodiment, the limiting member 440 includes a connecting portion 441 and a limiting portion 442. The connecting portion 441 extends vertically downward from the bottom of the lifting column 400. The limiting portion 442 is integrally arranged with the connecting portion 441. The limiting portion 442 extends horizontally from one side of the bottom of the connecting portion 441, so that the limiting member 440 has an "L"-shaped structure. During the plugging process of the limiting member 440 and the limiting hole 520, the limiting portion 442 and the connecting portion 441 penetrate into the limiting hole 520 until the bottom of the lifting column 400 abuts against the top of the foot 500. At this time, the bottom end of the connecting portion 441 and the limiting portion 442 are both located below the limiting hole 520; then, the limiting portion 442 is inserted into the limiting hole 520. The limiting member 440 is translated in the extension direction until the side wall of the connecting portion 441 abuts against the inner wall of the limiting hole 520. At this time, the bottom surface of the foot 500 abuts against the top surface of the limiting portion 442, and the top surface of the foot 500 abuts against the bottom surface of the lifting column 400, so as to realize the horizontal plug-in between the limiting member 440 and the foot 500; finally, the clamping member 530 is clamped to the side of the connecting portion 441 away from the limiting portion 442, so as to apply a force toward the limiting member 440 to the connecting portion 441 through the clamping member 530, so that the position of the limiting member 440 is always maintained below the foot 500 on the side of the limiting hole 520, that is, the limiting portion 442 is kept in contact with the ground of the foot 500. The setting of the connecting portion 441 can not only limit the horizontal insertion between the limiting member 440 and the foot 500, but also the part extending out of the limiting hole 520 can facilitate the user to check whether the limiting member 440 and the limiting hole 520 are plugged in place, so as to clamp the clamping member 530 and the limiting member 440.

[0087] In order to ensure the stable clamping of the clamping member 530 and the connecting portion 441, as shown in FIG. Figure 21 As shown, in this embodiment, a clamping groove 443 is provided on the side of the connecting portion 441 away from the limiting portion 442, and the clamping member 530 cooperates with the clamping groove 443. The clamping member 530 clamped on the limiting member 440 is limited by the clamping groove 443 to prevent the two from freely disengaging due to vibration and the like, so that the clamping effect of the clamping member 530 and the limiting member 440 is good, and then the limiting member 440 can be stably plugged into the foot 500, so as to stably lock the installation of the lifting column 400 and the foot 500.

[0088] like Figure 21As shown, in this embodiment, a horizontally extending insertion protrusion 444 is further provided on one side of the connecting portion 441. The insertion protrusion 444 is located directly above the limiting portion 442, that is, the projection of the insertion protrusion 444 on the horizontal plane coincides with that of the limiting protrusion. When the limiting member 440 is clamped with the clamping member 530, the insertion protrusion 444 is inserted into the inner wall of the limiting hole 520. By providing the insertion protrusion 444, the connecting portion 441 can be inserted into the floor base 500 through both the limiting portion 442 and the insertion protrusion 444 at the same time, thereby making the horizontal insertion effect between the limiting member 440 and the floor base 500 better. When the lifting column 400 is subjected to a horizontal thrust, the limiting portion 442 and the insertion protrusion 444 can disperse the force, avoiding the breakage caused by the concentrated thrust at the connection between the connecting portion 441 and the limiting portion 442. In another embodiment, the limiting member may only include the connecting portion, without including the limiting portion. The insertion protrusion is provided on the connecting portion and is inserted into the floor base, and the clamping member is clamped with the part of the connecting portion extending out of the limiting hole.

[0089] The floor base 500 in this embodiment includes an upper housing 511 and a lower housing 512. The upper housing 511 covers the upper housing 511 to form a base 510. An installation gap 513 is formed between the upper housing 511 and the lower housing 512. When the limiting member 440 is clamped with the clamping member 530, the insertion protrusion 444 is inserted into the installation gap 513. The top surface of the insertion protrusion 444 abuts against the bottom surface of the upper housing 511, and the bottom surface of the insertion protrusion 444 abuts against the top surface of the lower housing 512. The combined structure of the upper housing 511 and the lower housing 512 enhances the thickness and strength of the floor base 500, and the gap formed between the two can also be used for inserting the insertion protrusion 444, realizing the horizontal insertion with the insertion protrusion 444 without opening holes in the floor base 500, further enhancing the limiting effect of the floor base 500 on the limiting member 440 and making the installation of the lifting column 400 on the floor base 500 more stable. Support protrusions 540 are respectively provided at both ends of the strip-shaped base 510. The support protrusions 540 are located on the bottom surface of the base 510. When the table frame is placed on the ground, the support protrusions 540 support the base 510 to form an avoidance gap 550 below the base 510 to avoid the clamping member 530 installed at the bottom of the base 510 from being squeezed and damaged by the base 510 and the ground, and also to avoid the clamping member 530 affecting the stable support of the floor base 500 for the lifting column 400.

[0090] In this embodiment, the structure of the clamping member 530 is the same as that of the first locking member 260. The clamping member 530 includes a positioning block 531 and a clamping ring 532. The positioning block 531 is fixed to the bottom of the floor footing 500 and is located on one side of the connecting portion 441 where the limiting portion 442 is provided. One end of the clamping ring 532 is rotatably connected to the positioning block 531. After the limiting member 440 and the floor footing 500 are horizontally inserted in place, the clamping ring 532 is rotated so that the other end of the clamping ring 532 is sleeved on the limiting member 440. The inner ring of the clamping ring 532 abuts against the inner wall of the clamping groove 443 to pull the limiting member 440 in the direction of the positioning block 531 (i.e., the direction of the limiting portion 442), so that the connecting portion 441 and the limiting portion 442 are kept in contact with the floor footing 500, and further the limiting member 440 and the floor footing 500 are stably kept in a horizontally inserted state. Preferably, the positioning block 531 and the floor footing 500 are of a split structure. The positioning block 531 is locked to the floor footing 500 by screws, reducing the production and processing difficulty of the floor footing 500. When the clamping member 530 is damaged, the clamping member 530 can be removed for separate replacement, reducing the maintenance cost.

[0091] At least one limiting member 440 is provided. In this embodiment, preferably, a plurality (two or more) of limiting members 440 are provided. The limiting holes 520 on the floor footing 500 are arranged in one-to-one correspondence with the limiting members 440. When the lifting column 400 and the floor footing 500 are in an assembled state, the limiting members 440 are inserted into the limiting holes 520 in one-to-one correspondence to enhance the connection strength between the lifting column 400 and the floor footing 500 through a plurality of limiting members 440, making their connection more firm and avoiding breakage at the connection between the lifting column 400 and the floor footing 500. The clamping member 530 can be provided with one or a plurality (two or more). Each clamping member 530 is clamped with any one or a plurality of limiting members 440 at the same time to realize the locking of the lifting column 400 and the floor footing 500. The operation is simple and convenient. The clamping groove 443 can be provided only on the limiting member 440 for cooperating with the clamping member 530, or can be provided on each limiting member 440 at the same time.

[0092] The limiting member 440 can be integrally provided with the bottom of the lifting column 400 or can be separately provided. In this embodiment, preferably, as Figure 20 shown, the limiting member 440 is detachably connected to the lifting column 400. When the limiting member 440 is damaged, the limiting member 440 can be separately replaced without replacing the lifting column 400 together, reducing the maintenance cost. Of course, in another embodiment, only the limiting member for cooperating with the clamping member can be detachably connected to the lifting column, and the other limiting members are integrally provided with the lifting column. Because the limiting member for clamping the clamping member is subjected to greater force than other limiting members, the probability of damage is higher. The limiting member for cooperating with the clamping member is detachably connected to the lifting column for easy replacement when damaged.

[0093] Embodiment 2:

[0094] The present invention further provides a lifting table, as Figure 1 shown, comprising a tabletop 100 and a lifting table frame installed at the bottom of the tabletop. The lifting table frame is the lifting table frame in the above embodiment. A cross beam 200 and side beams 300 are installed at the bottom of the tabletop 100 and locked to the tabletop 100 by screws.

[0095] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as within the protection scope of the present invention.

Claims

1. A lifting table frame, characterized in that: include: A crossbeam, comprising a first crossbeam and a second crossbeam extending horizontally, wherein the first crossbeam and the second crossbeam are rotatably connected to each other, and the first crossbeam and the second crossbeam are rotated to switch between a coaxially arranged use state and a folded state in which the first crossbeam and the second crossbeam are close to each other; Side beams are provided in two groups, and the two groups of side beams are respectively arranged horizontally at the two ends of the cross beam, and each group of side beams includes a first side beam and a second side beam, and the first side beam and the second side beam are rotatably connected to the cross beam at opposite ends, and the first side beam and the second side beam are switched between a use state perpendicular to the cross beam and a folded state close to the cross beam by rotating; There are two lifting columns, which are respectively vertically arranged at the two ends of the beam to drive the beam to rise and fall. The top of the lifting column is rotatably connected to the beam, and the two lifting columns are folded relative to the beam by rotating toward each other; A foot is detachably connected to the bottom of the lifting column, and the foot extends horizontally to support the lifting column.

2. The lifting table frame according to claim 1, characterized in that: The lifting column includes a sleeve assembly provided with a connecting plate and a lifting assembly arranged in the sleeve assembly for driving the sleeve assembly to extend and retract. The connecting plate is fixed on the top of the sleeve assembly to rise and fall with the sleeve assembly. The sleeve assembly is rotatably connected to the crossbeam through the connecting plate.

3. The lifting table frame according to claim 2, characterized in that: When the lifting table frame is packaged and stored, the cross beam and the side beam are both in a folded state, the lifting column is folded relative to the cross beam, a placement gap is formed between the lifting column and the cross beam through a connecting plate, and the foot is detached from the lifting column and stored in the placement gap.

4. The lifting table frame according to claim 3, characterized in that: The top of the connecting plate is provided with a supporting groove matched with the crossbeam, the crossbeam is provided with a rotating shaft, the inner side wall of the supporting groove is provided with a rotating shaft hole, and the rotating shaft is horizontally inserted in the rotating shaft hole to enable the connecting plate to be rotatably connected with the crossbeam.

5. The lifting table frame according to claim 4, characterized in that: The crossbeam is also provided with a clamping protrusion parallel to the rotating shaft, and the inner wall of the supporting groove is provided with a clamping groove, the clamping groove includes a mounting portion extending longitudinally to pass through the top of the supporting groove and a stop portion extending laterally from the bottom of the mounting groove, and the clamping protrusion is clamped into the stop portion to prevent the lifting column perpendicular to the crossbeam from rotating freely.

6. The lifting table frame according to claim 5, characterized in that: The bottoms of the cross beam and the connecting plate are respectively provided with a first locking member and a second locking member, and the first locking member is locked with the second locking member to prevent the clamping protrusion from freely disengaging from the stop portion.

7. The lifting table frame according to claim 1, characterized in that: The first crossbeam and the second crossbeam are rotatably connected via a hinge assembly, the hinge assembly is detachably connected to the top of the first crossbeam and the second crossbeam, and the first crossbeam and the second crossbeam are folded by rotating upward.

8. The lifting table frame according to claim 7, characterized in that: A third locking member and a fourth locking member are respectively provided at the bottom of the adjacent ends of the first cross beam and the second cross beam, and the third locking member is locked with the fourth locking member to keep the cross beam in a use state.

9. The lifting table frame according to claim 7, characterized in that: The lifting table frame also includes a telescopic component detachably connected between the first beam and the second beam. When the telescopic component is connected to the first beam and the second beam respectively, at least one of the first beam and the second beam is slidably connected to the telescopic component to enable the beam to be extended or retracted.

10. The lifting table frame according to claim 9, characterized in that: The telescopic assembly includes a sliding member and a connecting member with sliding holes at both ends. The connecting member is covered at the ends of the first beam and the second beam. The sliding member is fixed to the sides of the first beam and the second beam and horizontally penetrates the sliding holes to be slidably connected with the sliding holes.

11. The lifting table frame according to claim 1, characterized in that: The lifting table frame also includes a controller for controlling the lifting of the lifting column. The crossbeam is provided with a receiving groove with an opening facing the table top. The controller is arranged in the receiving groove. The bottom of the crossbeam is also provided with an inspection port, which runs through the crossbeam longitudinally so that the receiving groove is connected with the outside through the inspection port.

12. The lifting table frame according to claim 11, characterized in that: A cover plate is also provided at the bottom of the crossbeam, and the cover plate is detachably connected to the crossbeam to cover the inspection opening.

13. The lifting table frame according to claim 12, characterized in that: The cover plate includes a plate body, one end of which is locked with the crossbeam through a locking assembly, and the other end of the plate body is provided with an inclined stop edge. When the cover plate is closed on the inspection opening, the stop edge extends into the accommodating groove, and the lower surface of the stop edge abuts against the crossbeam.

14. The lifting table frame according to claim 13, characterized in that: One end of the plate body provided with the stop edge is also provided with a stop sheet. When the cover plate is closed on the inspection opening, the stop sheet extends horizontally and abuts against the bottom surface of the crossbeam.

15. The lifting table frame according to claim 13, characterized in that: The locking assembly includes a positioning piece fixed in the accommodating groove and a clamping piece fixed on the plate body, the clamping piece is provided with a clamping groove, the positioning piece includes a base body provided with a positioning groove and a marble and a spring provided in the positioning groove, the spring is used to push the marble part into the clamping groove so that the clamping piece is clamped with the positioning piece.

16. The lifting table frame according to claim 1, characterized in that: A limiting piece is provided at the bottom of the lifting column, a limiting hole for passing the limiting piece is provided on the foot, and a clamping piece is also provided at the bottom of the foot. When the lifting column and the foot are in an assembled state, the lower end of the limiting piece passes through and extends out of the limiting hole to be clamped with the clamping piece. Under the pulling of the clamping piece, the limiting piece maintains a horizontal insertion with the foot at the side of the limiting hole.

17. The lifting table frame according to claim 16, characterized in that: The limiting member includes a vertically extending connecting portion and a horizontally extending limiting portion, wherein the limiting portion is arranged on one side of the bottom of the connecting portion, and when the clamping member is clamped on the side of the connecting portion away from the limiting portion, the limiting portion abuts against the bottom surface of the foot on one side of the limiting hole.

18. A lifting table frame according to claim 16 or 17, characterized in that: A plug-in protrusion is provided on one side of the limiting member, and when the limiting member and the clamping member are clamped, the plug-in protrusion is plugged into the inner wall of the limiting hole.

19. The lifting table frame according to claim 16, characterized in that: The clamping member includes a positioning block fixed to the bottom of the foot and a clamping ring rotatably connected to the positioning block. The clamping ring is sleeved on the limiting member to pull the limiting member toward the positioning block so that the limiting member and the foot remain plugged.

20. A lifting table, comprising a table top and a lifting table frame installed at the bottom of the table top, characterized in that: The lifting table frame is the lifting table frame according to any one of claims 1 to 19, and the cross beam and side beam are installed at the bottom of the table top.

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