A mobile height-adjustable folding table

Abstract

This invention discloses a movable, height-adjustable, folding table, including a base with an upright U-shaped support seat. The U-shaped support seat includes a bottom frame plate and two vertically arranged left and right vertical plates on either side of the bottom frame plate. The openings of the left and right vertical plates on both sides of the U-shaped support seat, away from the bottom frame plate, face the rear of the base. The U-shaped support seat is fixedly connected to the base. The front ends of the base have forward-protruding, symmetrically matched front-protruding support legs. The opening of the U-shaped support seat is located on the side away from the front-protruding support legs. The bottom frame plate of the U-shaped support seat is located on the side close to the front-protruding support legs. The outer side of the bottom frame plate of the U-shaped support seat has forward-extending top support legs that match the front-protruding support legs. The top support legs are parallel to the front-protruding support legs, and their ends away from the base are flush. This application improves the table's spatial adaptability and scene flexibility.

Description

Technical Field

[0001] This invention relates to the field of furniture technology, and in particular to a height-adjustable, foldable, and portable height-adjustable table. Background Technology

[0002] In existing technologies, office and home desks generally suffer from fixed structures and limited functions, making it difficult to meet the diverse and mobile work and lifestyle needs of modern life. Existing office and home desks cannot be effectively folded and stored when not in use or during mobile work, occupying a significant amount of space and making them inconvenient to store or move. Especially when relocation is required, they are unsuitable for scenarios involving frequent changes in work location, such as outdoor activities, temporary work, or mobile services, where portability and mobility are paramount. Traditional desks, due to their bulkiness and lack of storage and relocation structures, cannot meet the demands for rapid deployment and flexible movement. Existing technologies still fall short in terms of the ease of height adjustment, compact folding and storage, and lightweight transport. There is an urgent need for a compact, easy-to-operate, and easily stored and moved height-adjustable folding desk. Summary of the Invention

[0003] In order to solve the problems existing in the prior art, the present invention aims to provide a mobile height-adjustable folding table, which aims to solve the technical problems existing in the height adjustment, folding and storage and portability of the existing table. Through the folding structure and the lifting structure, the height of the tabletop can be adjusted, the angle of the tabletop can be adjusted, the overall structure can be folded, and it is convenient and labor-saving to move.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A mobile lifting and folding table includes a base with an upright U-shaped support seat. The U-shaped support seat includes a bottom frame plate and a left vertical plate and a right vertical plate vertically arranged on both sides of the bottom frame plate. The openings of the left vertical plate and the right vertical plate on both sides of the U-shaped support seat away from the bottom frame plate face the rear of the base. The U-shaped support seat is fixedly connected to the base. The front two ends of the base are provided with forward-protruding (straightening) matching symmetrical front protruding support legs. The opening of the U-shaped support is located on the side away from the front protruding support legs. The bottom frame plate of the U-shaped support is located on the side close to the front protruding support legs. The outer side (outer wall) of the bottom frame plate of the U-shaped support is provided with forward-protruding (bulging) top support legs that match the front protruding support legs. The top support legs are arranged parallel to the front protruding support legs, and the top support legs are flush with the end faces of the front protruding support legs away from the base. The U-shaped support base has a column, and the U-shaped support base and the column are hinged together; a liftable lifting column is installed in the column, and a gas spring is installed in the column. One end of the gas spring is located at the lower part of the column, and the other end of the gas spring is connected to the top of the lifting column. The top of the lifting column away from the U-shaped support is provided with a U-shaped top bracket, which is fixedly connected to the lifting column; a hinged desktop U-shaped bracket is provided on the outside of the U-shaped top bracket, and the U-shaped top bracket is rotatably embedded in the desktop U-shaped bracket, which is fixedly installed on the bottom surface of the panel.

[0005] The U-shaped support base has a left vertical plate and a right vertical plate perpendicular to the bottom frame plate on both sides. The left vertical plate, the right vertical plate, and the bottom frame plate are vertically mounted on the base. The left vertical plate and the right vertical plate are respectively provided with matching and symmetrically arranged first pin holes. The left vertical plate is provided with a left arc-shaped groove centered on the first pin hole, and the right vertical plate is provided with a right arc-shaped groove centered on the other first pin hole. The right arc-shaped groove is matched and symmetrically arranged with the left arc-shaped groove. The groove spacing of the right arc-shaped groove is smaller than that of the left arc-shaped groove. Locking holes are provided at both ends of the right arc-shaped groove. The diameter of the locking holes is larger than the groove spacing of the right arc-shaped groove and equal to the groove spacing of the left arc-shaped groove.

[0006] Furthermore, in some embodiments, the central angle α1 of the left arc-shaped slide and the right arc-shaped slide is 90°, one side of the circumferential angle of the left arc-shaped slide and the right arc-shaped slide is parallel to the base, and the other side of the circumferential angle of the left arc-shaped slide and the right arc-shaped slide is perpendicular to the base. An adjustment button is provided on the outer side of the right vertical plate. The adjustment button has a locking pin that passes through a locking hole, a positioning hole, and a left arc-shaped slide groove. A short adjustment shaft is provided between the adjustment button and the locking pin. The diameter of the short adjustment shaft is smaller than the groove spacing of the right arc-shaped slide groove. The short adjustment shaft is slidably set in the right arc-shaped slide groove.

[0007] Furthermore, in some embodiments, the diameter of the locking pin is greater than the groove pitch of the right arc-shaped slide groove, a return spring is sleeved on the locking pin, the return spring is located in the column (inside), and a retaining spring is provided at the end of the locking pin near the adjustment button (near the adjustment short shaft), the retaining spring is located inside the column. One end of the return spring is set to abut against the retaining ring, and the other end of the return spring away from the retaining ring is set to abut against the inner wall of the column away from the adjustment button; The locking pin on the adjustment button is installed through the locking hole, the positioning hole, and the left arc-shaped slide groove; the outer side of the left vertical plate is provided with a locking wheel that can lock the U-shaped support base and the column.

[0008] Furthermore, in some embodiments, the base plate of the U-shaped top bracket is fixedly installed at the top of the lifting column, and the base plate of the desktop U-shaped bracket is fixedly installed on the bottom surface of the panel. The base plate of the desktop U-shaped bracket is provided with a first desktop side plate and a second desktop side plate on both sides, which are perpendicular to the bottom surface of the panel; the base plate of the U-shaped top bracket is provided with a first top side plate and a second top side plate on both sides, which are perpendicular to the base plate. The first top side plate is close to the first desktop side plate, and the second desktop side plate is close to the second top side plate. The first desktop side plate, the second desktop side plate, the first top side plate, and the second top side plate are arranged parallel to each other.

[0009] Furthermore, in some embodiments, an angle adjuster is provided between the first top side panel and the first desktop side panel, and the first top side panel and the first desktop side panel are rotatably connected by the angle adjuster; The second desktop side panel and the second top side panel are hinged together by a pivot. The second desktop side panel has an arc-shaped sliding groove with the pivot as the center of the arc, and the central angle of the arc-shaped sliding groove is 90°. The outer wall of the second top side panel is provided with a positioning pin that matches the arc-shaped sliding groove of the panel. The positioning pin is slidably set in the arc-shaped sliding groove of the panel.

[0010] Furthermore, in some embodiments, the bottom frame plate of the U-shaped support is perpendicular to the base, and the opening of the U-shaped support away from the bottom frame plate faces the rear of the base. The base has rearward-extending table legs at the rear; at both ends of the rear of the base, there is a set of rearward-extending table legs that extend obliquely backward, and the two rearward-extending table legs are arranged in a figure-eight shape at the rear of the base. The front end of the top support leg away from the U-shaped support base and the front end of the front convex pair of support legs away from the base are on the same plane, and the front part of the front convex pair of support legs away from the base is provided with rollers.

[0011] Furthermore, in some embodiments, the left and right vertical plates of the U-shaped support are respectively provided with matching symmetrical first pin holes, and the column is provided with a second pin hole that matches the first pin hole. The first pin hole and the second pin hole are coaxially arranged, and the column and the U-shaped support are hinged by a pin shaft, with the pin shaft passing through the first pin hole and the second pin hole.

[0012] Furthermore, in some embodiments, the top of the gas spring is located at the top of the lifting column, and the top of the lifting column is fixedly connected to the base plate of the U-shaped top bracket. The gas spring switch is located at the bottom end of the gas spring near the U-shaped support base; a control pedal is provided on the outside of the column, and a switch lever corresponding to the gas spring switch is provided at the end of the control pedal near the column. The end of the switch lever that extends into the column (the end away from the control pedal) is located below the gas spring switch and is adjacent to the gas spring switch. The middle part of the switch lever is hinged to the column.

[0013] Furthermore, in some embodiments, the outer side of the first desktop side panel is provided with a toggle switch that can control the angle adjuster, the bottom surface of the panel is provided with an adjustment button, and the adjustment button is connected to the toggle switch by a pull cord (pulling); the bottom surface of the panel is provided with a handle, and the rear edge of the panel is provided with a stop strip.

[0014] This application achieves functions such as stepless height adjustment, quick folding and storage, convenient movement, and desktop angle adjustment. The table support adopts a hinged flip-folding structure, with the U-shaped support base and the upright connected by a pin. When folding, pressing the adjustment button disengages the locking pin from the locking hole at one end of the right arc-shaped slide on the right side of the vertical plate of the U-shaped support base, allowing the upright and desktop to flip towards the base. When the upright is parallel to the base, the locking pin automatically engages with the locking hole at the other end of the right arc-shaped slide under the action of the return spring, achieving stable locking in the folded state. By folding the upright support structure to fit snugly against the base, this application significantly reduces the overall thickness of the table, reducing storage volume and facilitating placement in narrow spaces or transportation in vehicles, thus improving space utilization. The stable folded state, utilizing the self-locking structure of spring return and locking hole cooperation, ensures that the table will not accidentally unfold during folding and transportation, ensuring safety and reliability. When the table of this application is folded, the front protruding pair of support legs and the top support leg together form a supporting plane to make the base stand upright and move smoothly; at this time, by holding the handle at the bottom of the table and tilting it backward, the front roller touches the ground, and it can be dragged like a suitcase.

[0015] This application can effectively meet the comprehensive needs of various usage scenarios for desktop height, angle and device portability, and improve the spatial adaptability and scenario flexibility of the table. Attached Figure Description

[0016] Figure 1 This is a schematic diagram illustrating the movement according to an embodiment of the present invention; Figure 2 This is a schematic diagram illustrating the use of an embodiment of the present invention; Figure 3 This is a three-dimensional schematic diagram of an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 5 This is a schematic diagram of the stacking process according to an embodiment of the present invention; Figure 6 This is an assembly diagram of the U-shaped support portion according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the U-shaped support portion according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the desktop U-shaped support portion according to an embodiment of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0018] In the description of this invention, it should be noted that the terms "lateral," "upper," "lower," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly defined.

[0019] Referring to the accompanying drawings, the present invention includes a base 11, on which an upright U-shaped support 31 is provided. The U-shaped support 31 includes a bottom frame plate 24 and a left vertical plate 43 and a right vertical plate 44 vertically arranged on both sides of the bottom frame plate 24. The bottom frame plate 24 of the U-shaped support 31 is perpendicular to the base 11. The opening of the U-shaped support 31 away from the bottom frame plate 24 faces the rear (rear part) of the base 11. That is, the openings of the left vertical plate 43 and the right vertical plate 44 on both sides of the U-shaped support 31 away from the bottom frame plate 24 face the rear (rear part) of the base 11. The U-shaped support 31 is fixedly connected to the base 11. The base 11 has rearwardly extending table legs 13 at its rear end; preferably, the base 11 has a set of rearwardly extending oblique table legs 13 at both ends of its rear end, and the two rearward extending table legs 13 are arranged in a V-shape at the rear end of the base 11; the base 11 has forward-protruding (straightening) and symmetrically matched front-protruding support legs 14 at both ends of its front end, the opening of the U-shaped support base 31 is located on the side away from the front-protruding support legs 14, and the bottom frame plate 24 of the U-shaped support base 31 is located on the side close to the front-protruding support legs 14. The outer side (outer wall) of the bottom frame plate 24 of the U-shaped support base 31 is provided with a forward-extending (protruding) top support leg 15 that matches the front protruding pair of support legs 14. The top support leg 15 is arranged parallel to the front protruding pair of support legs 14, and the end faces of the top support leg 15 and the front protruding pair of support legs 14 away from the base 11 are flush. That is, the front end of the top support leg 15 away from the U-shaped support base 31 and the front end of the front protruding pair of support legs 14 away from the base 11 are located on the same plane. A roller 16 is provided at the front part of the front protruding pair of support legs 14 away from the base 11. See Appendix Figure 5When the table is folded up and the base 11 is erected, the front end of the front protruding support leg 14 and the front end of the top support leg 15 are horizontally on the ground.

[0020] Furthermore, in one embodiment, the U-shaped support base 31 is provided with a column 21, and the U-shaped support base 31 and the column 21 are hinged together. Matching symmetrical first pin holes 32 are opened on both side walls (left vertical plate 43, right vertical plate 44) of the U-shaped support base 31, and a second pin hole 48 corresponding to the first pin hole 32 is opened on the column 21. The first pin hole 32 and the second pin hole 48 are coaxially arranged. The column 21 and the U-shaped support base 31 are hinged together by a pin 18, which passes through the first pin hole 32 and the second pin hole 48. A liftable lifting column 22 is sleeved in the column 21, and a gas spring 17 is provided in the column 21. One end of the gas spring 17 is located at the lower part of the column 21, and the other end of the gas spring 17 is connected to the top of the lifting column 22, i.e., the top of the gas spring 17 is located at the top of the lifting column 22; the spring switch 45 of the gas spring 17 is located at the bottom end of the gas spring 17 near the U-shaped support base 31.

[0021] A control pedal 19 is provided on the outside of the column 21. A switch lever 46 corresponding to the spring switch 45 of the gas spring 17 is provided at one end of the control pedal 19 near the column 21. The switch lever 46 extends into the end of the column 21 (the end away from the control pedal 19) and is located below the spring switch 45 of the gas spring 17 and is adjacent to the spring switch 45 of the gas spring 17. The middle part of the switch lever 46 is hinged to the column 21.

[0022] Furthermore, in one embodiment, a U-shaped top bracket 23 is provided at the top of the lifting column 22 away from the U-shaped support base 31, and the U-shaped top bracket 23 is fixedly connected to the lifting column 22; further, the top of the lifting column 22 is fixedly connected to the base plate of the U-shaped top bracket 23; a hinged desktop U-shaped bracket 51 is provided on the outside of the U-shaped top bracket 23, and the U-shaped top bracket 23 is rotatably embedded in the desktop U-shaped bracket 51, and the desktop U-shaped bracket 51 is fixedly installed on the bottom surface of the panel 12.

[0023] The bottom frame plate 24 of the U-shaped support base 31 is provided with a left vertical plate 43 and a right vertical plate 44 perpendicular to the bottom frame plate 24. The left vertical plate 43, the right vertical plate 44 and the bottom frame plate 24 are vertically arranged on the base 11. The left vertical plate 43 and the right vertical plate 44 are respectively provided with matching symmetrical and coaxially arranged first pin holes 32. The left vertical plate 43 is provided with a left arc-shaped sliding groove 33 with the first pin hole 32 as the arc center. The right vertical plate 44 is provided with a right arc-shaped sliding groove 34 with the other first pin hole 32 as the arc center. The right arc-shaped sliding groove 34 is matched and symmetrically arranged with the left arc-shaped sliding groove 33. The groove spacing of the right arc-shaped sliding groove 34 is smaller than that of the left arc-shaped sliding groove 33. The two ends of the right arc-shaped sliding groove 34 are respectively provided with locking holes 35. The diameter of the locking holes 35 is larger than the groove spacing of the right arc-shaped sliding groove 34. Further, the diameter of the locking holes 35 is equal to the groove spacing of the left arc-shaped sliding groove 33.

[0024] See appendix Figure 7 As shown, the central angle α1 of the left arc-shaped slide 33 and the right arc-shaped slide 34 is 90°; one side of the circumferential angle of the left arc-shaped slide 33 and the right arc-shaped slide 34 is parallel to the base 11, and the other side of the circumferential angle of the left arc-shaped slide 33 and the right arc-shaped slide 34 is perpendicular to the base 11; an adjustment button 36 is provided on the outer side of the right vertical plate 44, and a locking pin 38 is provided on the adjustment button 36 through the locking hole 35, the positioning hole 49, and the left arc-shaped slide 33, that is, the locking pin 38 on the adjustment button 36 is disposed through the locking hole 35, the positioning hole 49, and the left arc-shaped slide 33; a directional short shaft 37 is provided between the adjustment button 36 and the locking pin 38, and the diameter of the directional short shaft 37 is smaller than the groove pitch of the right arc-shaped slide 34, that is, the directional short shaft 37 is slidably disposed in the right arc-shaped slide 34.

[0025] Furthermore, in one embodiment, the diameter of the locking pin 38 is larger than the groove pitch of the right-side arc-shaped slide groove 34. A return spring 41 is sleeved on the locking pin 38 and is disposed inside the column 21. A retaining spring 39 is provided at the end of the locking pin 38 near the adjustment button 36 (near the adjustment short shaft 37). The retaining spring 39 is disposed inside the column 21. One end of the return spring 41 abuts against the retaining spring 39, and the other end of the return spring 41 away from the retaining spring 39 abuts against the inner wall of the column 21 away from the adjustment button 36. A locking wheel 42 that can lock the U-shaped support 31 and the column 21 is provided on the outer side of the left vertical plate 43.

[0026] The base plate of the U-shaped top bracket 23 is fixedly installed at the top of the lifting column 22, and the base plate of the desktop U-shaped bracket 51 is fixedly installed on the bottom surface of the panel 12. The base plate of the desktop U-shaped bracket 51 is provided with a first desktop side plate 56 and a second desktop side plate 57 perpendicular to the bottom surface of the panel 12 on both sides. The base plate of the U-shaped top bracket 23 is provided with a first top side plate 58 and a second top side plate 59 perpendicular to its base plate. The first top side plate 58 is close to the first desktop side plate 56, and the second desktop side plate 57 is close to the second top side plate 59. The first desktop side plate 56, the second desktop side plate 57, the first top side plate 58, and the second top side plate 59 are arranged parallel to each other.

[0027] Furthermore, in one embodiment, an angle adjuster 54 (commercially available product) is provided between the first top side panel 58 and the first desktop side panel 56, and the first top side panel 58 and the first desktop side panel 56 are rotatably connected by the angle adjuster 54; the second desktop side panel 57 and the second top side panel 59 are hinged together by a pivot 28, and the second desktop side panel 57 is provided with a panel arc-shaped slide groove 53 with the pivot 28 as the center of the arc, and the central angle of the panel arc-shaped slide groove 53 is 90°; the outer wall of the second top side panel 59 is provided with a positioning pin 55 that matches the panel arc-shaped slide groove 53, and the positioning pin 55 is slidably disposed in the panel arc-shaped slide groove 53.

[0028] Furthermore, in one embodiment, the outer side of the first desktop side panel 56 is provided with a toggle switch 29 that can control the angle adjuster 54, the bottom surface of the panel 12 is provided with an adjustment button 27, and the adjustment button 27 is connected to the toggle switch 29 by a pull rope 52 (pulling); the bottom surface of the panel 12 is provided with a handle 26, and the rear edge of the panel 12 is provided with a stop bar 25.

[0029] 1. When using: lightly step on the end of the extended table leg 13 with your toes, press the adjustment button 36 with your right thumb, and the locking pin 38 will unlock from the locking hole 35. At the same time, lift the column 21 with your left hand and stand it upright. Adjust the short axis 37 to slide into the locking hole 35 at the other end of the right arc-shaped slide groove 34. Release the adjustment button 36: the locking pin 38 will lock with the locking hole 35 at the other end.

[0030] 2. When folding: When the column 21 needs to be folded on the base 11, press the adjustment button 36 inward to move the locking pin 38 inward and disengage it from the locking hole 35 at the upper end of the right arc-shaped slide groove 34. Then, move the adjustment short shaft 37 inward and insert it into the right arc-shaped slide groove 34. Step on the base 11 and place the column 21 on the U-shaped support 31 by hand (rotating). Slide (rotate) the adjustment short shaft 37 from the right arc-shaped slide groove 34 to the lower locking hole 35. Release the adjustment button 36. The return spring 41 and the retaining spring 39 will cause the end of the locking pin 38 near the adjustment button 36 to spring back into the locking hole 35 at the lower end of the right arc-shaped slide groove 34 and lock it. The outer side of the left vertical plate 43 is provided with a locking wheel 42 that can lock the U-shaped support 31 and the column 21.

[0031] 3. Method for adjusting the angle of panel 12 (desktop): The adjustment button 27 is located at the bottom of the table edge behind panel 12 (desktop). Press the back of panel 12 with one hand, pull and firmly grasp the adjustment button 27 with your fingers, and release the angle adjuster 54 through the pull rope 52 and the toggle switch 29. At this time, the U-shaped top bracket 23 and the desktop U-shaped bracket 51 can rotate relative to each other (unlock). Then, use the other hand to hold the front of panel 12 and pull it up and down to adjust the angle. After confirming the angle, quickly release the adjustment button 27. The angle adjuster 54 (angle adjuster) will lock, and panel 12 will automatically fix this angle on the lifting column 22.

[0032] 4. When adjusting the height: 4-1 Lifting: Grasp the center of the left and right sides of the panel 12 (desktop) with both hands, step down the control pedal 19 on the outside of the column 21 under the table with your right foot. The control pedal 19 will contact the spring switch 45 at the bottom of the gas spring 17 through the switch lever 46. The lifting column 22 will automatically extend out of the column 21 through the gas spring 17, and the panel 12 (desktop) will automatically rise from the base 11. 4-2 Lowering: Grasp the center of the left and right sides of the panel 12 with both hands. When the right foot steps on the control pedal 19 on the outside of the column 21 under the table, press down on the panel 12 at the same time. The lifting column 22 will retract and lower in the column 21, and the panel 12 (tabletop) will descend. After selecting the height, quickly remove the right foot. The switch lever 46 releases the spring switch 45 at the bottom of the gas spring 17, and the height will be automatically locked.

[0033] When folding and moving the table: 1. Press the adjustment button 27 to adjust the angle of the panel 12 (desktop) to 90° with the base 11 (chassis); 2. Fully release the locking wheel 42, press the adjustment button 36 with your right thumb, grasp the panel 12 with your left hand and slowly fold it down to the bottom, so that the column 21 is parallel to the base 11. Release the adjustment button 36 to lock it, the locking pin 38 will spring back and automatically fall into the locking hole 35 at the lower end of the right arc-shaped slide groove 34 to lock it. Then lift the panel 12 (desktop) upright, and place the front protruding pair of support legs 14 and the top support legs 15 of the base 11 on the ground; 3. Moving: Simply grasp the stainless steel handle 26 on the bottom of the panel 12 and tilt it backward. The roller 16 at the front end of the front protruding pair of support legs 14 will touch the ground and can be dragged away. The panel 12 (desktop) angle of the lifting and folding table of the present invention is adjustable, the lifting and lowering is convenient, it is easy to fold and store, and it can be easily moved, which is convenient for outdoor publicity, consultation, mobile office and other scenarios.

[0034] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this application should be determined by the appended claims.

Claims

1. A movable, height-adjustable, folding table, comprising a base (11) on which an upright U-shaped support (31) is provided, characterized in that, The U-shaped support base (31) includes a bottom frame plate (24) and a left vertical plate (43) and a right vertical plate (44) vertically erected on both sides of the bottom frame plate (24). The openings of the left vertical plate (43) and the right vertical plate (44) on both sides of the U-shaped support base (31) away from the bottom frame plate (24) face the rear of the base (11). The U-shaped support base (31) is fixedly connected to the base (11). The front two ends of the base (11) are provided with forward-protruding and symmetrically matched front protruding support legs (14). The opening of the U-shaped support seat (31) is located on the side away from the front protruding support legs (14). The bottom frame plate (24) of the U-shaped support seat (31) is located on the side close to the front protruding support legs (14). The outer side of the bottom frame plate (24) of the U-shaped support seat (31) is provided with a forward-extending top support leg (15) that matches the front protruding support legs (14). The top support leg (15) is parallel to the front protruding support legs (14), and the top support leg (15) is flush with the end face of the front protruding support legs (14) away from the base (11). The U-shaped support base (31) is provided with a column (21), and the U-shaped support base (31) and the column (21) are hinged together; a liftable lifting column (22) is sleeved in the column (21), and a gas spring (17) is provided in the column (21). One end of the gas spring (17) is set in the lower part of the column (21), and the other end of the gas spring (17) is connected to the top of the lifting column (22); The top of the lifting column (22) away from the U-shaped support base (31) is provided with a U-shaped top bracket (23), and the U-shaped top bracket (23) is fixedly connected to the lifting column (22); a hinged desktop U-shaped bracket (51) is provided on the outside of the U-shaped top bracket (23), and the U-shaped top bracket (23) is rotatably embedded in the desktop U-shaped bracket (51), and the desktop U-shaped bracket (51) is fixedly installed on the bottom surface of the panel (12); The bottom frame plate (24) of the U-shaped support (31) is provided with a left vertical plate (43) and a right vertical plate (44) perpendicular to the bottom frame plate (24) on both sides. The left vertical plate (43), the right vertical plate (44) and the bottom frame plate (24) are vertically arranged on the base (11). The left vertical plate (43) and the right vertical plate (44) are respectively provided with matching symmetrical and coaxial first pin holes (32). The left vertical plate (43) is provided with a left arc-shaped groove (33) with the first pin hole (32) as the center of the arc. The right vertical plate (43) is provided with a left arc-shaped groove (33) with the first pin hole (32) as the center of the arc. The vertical plate (44) is provided with a right arc-shaped slide groove (34) with the other first pin hole (32) as the center of the arc. The right arc-shaped slide groove (34) and the left arc-shaped slide groove (33) are symmetrically matched. The groove distance of the right arc-shaped slide groove (34) is smaller than the groove distance of the left arc-shaped slide groove (33). Locking holes (35) are provided at both ends of the right arc-shaped slide groove (34). The diameter of the locking hole (35) is larger than the groove distance of the right arc-shaped slide groove (34), and the diameter of the locking hole (35) is equal to the groove distance of the left arc-shaped slide groove (33).

2. A mobile, height-adjustable, folding table according to claim 1, characterized in that, The central angle α1 of the left arc-shaped slide (33) and the right arc-shaped slide (34) is 90°. One side of the circumferential angle of the left arc-shaped slide (33) and the right arc-shaped slide (34) is parallel to the base (11), and the other side of the circumferential angle of the left arc-shaped slide (33) and the right arc-shaped slide (34) is perpendicular to the base (11). An adjustment button (36) is provided on the outside of the right vertical plate (44). The adjustment button (36) is provided with a locking pin (38) that passes through the locking hole (35), the positioning hole (49), and the left arc-shaped slide groove (33). A short adjustment shaft (37) is provided between the adjustment button (36) and the locking pin (38). The diameter of the short adjustment shaft (37) is smaller than the groove pitch of the right arc-shaped slide groove (34). The short adjustment shaft (37) is slidably set in the right arc-shaped slide groove (34).

3. A mobile, height-adjustable, folding table according to claim 2, characterized in that, The diameter of the locking pin (38) is greater than the groove pitch of the right arc-shaped slide groove (34). A reset spring (41) is sleeved on the locking pin (38). The reset spring (41) is set in the column (21). A retaining ring (39) is provided at the end of the locking pin (38) near the adjustment button (36). The retaining ring (39) is set inside the column (21). One end of the return spring (41) is set to abut against the snap ring (39), and the other end of the return spring (41) away from the snap ring (39) is set to abut against the inner wall of the column (21) away from the adjustment button (36); The locking pin (38) on the adjustment button (36) is installed through the locking hole (35), the positioning hole (49), and the left arc-shaped slide groove (33); the outer side of the left vertical plate (43) is provided with a locking wheel (42) that can lock the U-shaped support seat (31) and the column (21).

4. A mobile, height-adjustable, folding table according to claim 1, characterized in that, The base plate of the U-shaped top bracket (23) is fixedly installed at the top of the lifting column (22), and the base plate of the desktop U-shaped bracket (51) is fixedly installed on the bottom surface of the panel (12); The bottom plate of the desktop U-shaped bracket (51) is provided with a first desktop side plate (56) and a second desktop side plate (57) perpendicular to the bottom surface of the panel (12); the bottom plate of the U-shaped top bracket (23) is provided with a first top side plate (58) and a second top side plate (59) perpendicular to its bottom plate. The first top side plate (58) and the first desktop side plate (56) are arranged close to each other, and the second desktop side plate (57) and the second top side plate (59) are arranged close to each other. The first desktop side plate (56), the second desktop side plate (57), the first top side plate (58), and the second top side plate (59) are arranged parallel to each other.

5. A mobile, height-adjustable, folding table according to claim 4, characterized in that, An angle adjuster (54) is provided between the first top side panel (58) and the first desktop side panel (56), and the first top side panel (58) and the first desktop side panel (56) are rotatably connected by the angle adjuster (54); The second desktop side panel (57) and the second top side panel (59) are hinged together by a pivot (28). The second desktop side panel (57) has an arc-shaped sliding groove (53) with the pivot (28) as the center of the arc. The central angle of the arc-shaped sliding groove (53) is 90°. The outer wall of the second top side panel (59) is provided with a positioning pin (55) that matches the arc-shaped sliding groove (53). The positioning pin (55) is slidably disposed in the arc-shaped sliding groove (53).

6. A mobile, height-adjustable, folding table according to claim 1, characterized in that, The bottom frame plate (24) of the U-shaped support (31) is perpendicular to the base (11), and the opening of the U-shaped support (31) away from the bottom frame plate (24) faces the rear of the base (11); The base (11) has a rearward extending table leg (13) at the rear; the two ends of the rear of the base (11) have a set of rearward extending table legs (13) that extend obliquely to the rear, and the two rear extending table legs (13) are arranged in a figure-eight shape at the rear of the base (11); The front end of the top support leg (15) away from the U-shaped support seat (31) and the front end of the front protruding pair of support legs (14) away from the base (11) are on the same plane. The front part of the front protruding pair of support legs (14) away from the base (11) is provided with a roller (16).

7. A mobile, height-adjustable, folding table according to claim 1, characterized in that, The left vertical plate (43) and right vertical plate (44) of the U-shaped support (31) are respectively provided with matching and symmetrical first pin holes (32), and the column (21) is provided with a second pin hole (48) that matches the first pin hole (32). The first pin hole (32) and the second pin hole (48) are coaxially arranged. The column (21) and the U-shaped support (31) are hinged by a pin (18). The pin (18) passes through the first pin hole (32) and the second pin hole (48).

8. A mobile, height-adjustable, folding table according to claim 1, characterized in that, The top of the gas spring (17) is set on the top of the lifting column (22), and the top of the lifting column (22) is fixedly connected to the bottom plate of the U-shaped top bracket (23). The spring switch (45) of the gas spring (17) is located at the bottom end of the gas spring (17) near the U-shaped support (31); a control pedal (19) is provided on the outside of the column (21), and a switch lever (46) matching the spring switch (45) of the gas spring (17) is provided at one end of the control pedal (19) near the column (21). The end of the switch lever (46) extending into the column (21) is located below the spring switch (45) of the gas spring (17) and is adjacent to the spring switch (45) of the gas spring (17). The middle part of the switch lever (46) is hinged to the column (21).

9. A mobile, height-adjustable, folding table according to claim 4, characterized in that, The outer side of the first desktop side panel (56) is provided with a toggle switch (29) that can control the angle adjuster (54), and the bottom surface of the panel (12) is provided with an adjustment button (27). The adjustment button (27) and the toggle switch (29) are connected by a pull rope (52). The bottom surface of the panel (12) is provided with a handle (26), and the rear edge of the panel (12) is provided with a stop bar (25).

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