Lift table

Abstract

The utility model discloses a lifting table, including table frame, table board and two table legs, the table frame is connected at the back of table board, the table leg is connected with table frame and supports the table frame, the table frame includes two left and right interval arrangement's side plate and the crossbeam of fixed connection between two side plates, the side plate is located at the edge of the back of table board, and the top of two table legs is connected two end portions of crossbeam respectively, and two table legs are located at the opposite two side edges of table board respectively. The lifting table of the utility model, through the side plate and the table leg outer migration, can make the leg space bigger, to improve the comfort of user.

Description

Technical Field

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

[0002] The existing height-adjustable desk includes a table frame, a tabletop, and two legs spaced apart on the left and right. The table frame is connected to the back of the tabletop, and the legs are connected to and support the table frame. The table frame includes two side panels spaced apart on the left and right, and a crossbeam fixedly connected between the two side panels. The crossbeam extends along the left and right direction of the tabletop. Both the crossbeam and the side panels are fixed to the back of the tabletop with screws. The tops of the two legs are respectively connected and fixed to the two ends of the crossbeam. In the existing case, the two side panels are offset inward relative to the edge of the tabletop, and the two legs are located between the two side panels. Therefore, the inward movement of the two side panels will reduce the distance between the two legs, resulting in limited leg space and poor comfort. Utility Model Content

[0003] In order to overcome the shortcomings of existing technologies where the inward movement of table legs leads to limited leg space, this utility model provides a height-adjustable table. By moving the side panels and table legs outward, more leg space can be provided to improve user comfort.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: The height-adjustable table includes a table frame, a tabletop, and two table legs. The table frame is connected to the back of the tabletop, and the table legs are connected to and support the table frame. The table frame includes two side panels spaced apart from each other and a crossbeam fixedly connected between the two side panels. The side panels are located on the edge of the back of the tabletop. The tops of the two table legs are respectively connected to the two ends of the crossbeam, and the two table legs are respectively located on opposite sides of the tabletop.

[0005] Preferably, the side panel has an arc-shaped wall facing away from the other side panel, the arc-shaped wall extending downward from the lower end of the side of the tabletop and toward the other side panel, the arc-shaped wall having a clearance opening, and the top of part of the table leg inserting into the clearance opening.

[0006] Preferably, the top surface of the table leg is detachably connected to a decorative cover, which covers the assembly gap between the top surface of the table leg and the clearance opening.

[0007] Preferably, the decorative cover has an upwardly extending rib at its top, and the clearance opening has a slot at its top, with the rib inserted into the slot.

[0008] Preferably, the table leg includes a column and a connecting plate. The connecting plate is fixed to the top of the column on one side facing the other table leg and extends towards the other table leg. The connecting plate includes a support piece and two connecting pieces connected to the front and rear sides of the support piece. The two connecting pieces are attached to the front and rear sides of the crossbeam and are respectively fixed to the crossbeam by fasteners.

[0009] Preferably, the connecting piece is an inclined piece that gradually moves towards another connecting piece in a direction away from the tabletop, the fastener is a screw, and the connecting piece is provided with a through hole for the screw to pass through, the axis of the through hole being perpendicular to the connecting piece.

[0010] Preferably, the table leg also includes a diagonal brace, one end of which is connected to the inner top of the column, and the top of the diagonal brace is fixedly connected to the crossbeam.

[0011] Preferably, the table frame further includes an annular frame, which includes a rounded corner transition plate, two reinforcing plates and the two side plates. The two ends of the reinforcing plates are respectively connected to the two side plates through the rounded corner transition plate. Both the reinforcing plates and the rounded corner transition plates have arc-shaped walls that extend downward and inward from the lower side of the table.

[0012] Preferably, the crossbeam includes a middle beam and two connecting beams on both sides of the middle beam. The top of the table leg is fixedly connected to the connecting beams. One of the middle beam and the connecting beam is provided with a plurality of adjustment holes arranged along the length of the crossbeam, and the other is provided with a connecting hole. The connecting hole is fixedly connected to one of the adjustment holes by fasteners.

[0013] Preferably, the table legs are electrically adjustable table legs, and a wiring channel is formed between the crossbeam and the tabletop. The wiring channel is equipped with a controller and cables, and the cables connect the controller and the electrically adjustable table legs.

[0014] The beneficial effects of this utility model are: 1. This utility model places the side panels on the edge of the back of the tabletop, thus increasing the distance between the two side panels. Since the two ends of the crossbeam are connected to the two side panels respectively, placing the side panels on the edge of the back of the tabletop increases the length of the crossbeam. Furthermore, since the tops of the two table legs are connected to the two ends of the crossbeam respectively, the increased length of the crossbeam also leads to a greater distance between the two table legs, allowing the two table legs to be positioned on opposite sides of the tabletop. Therefore, this utility model, by moving the side panels and table legs outward, increases the distance between the two table legs, providing more legroom and improving user comfort.

[0015] 2. The side panel has an arc-shaped wall that faces away from the other side panel. The arc-shaped wall extends downward from the lower end of the side of the tabletop and towards the other side panel. The arc-shaped wall has a clearance opening, and the top of some table legs inserts into the clearance opening. The arc-shaped wall design reduces the risk of injury from bumps and knocks, is more hand-friendly during handling, and is more aesthetically pleasing from the front compared to a straight surface. In addition, the clearance opening in the arc-shaped wall allows the top of some table legs to be inserted into the clearance opening, thus enabling the side panel to be pre-positioned. This facilitates the subsequent connection and fixation of the side panel to the crossbeam. During assembly, the top of the table leg is connected to the end of the crossbeam, then the top of the table leg is inserted into the clearance opening to pre-position the side panel, and finally the side panel is fixed to the end of the crossbeam.

[0016] 3. The top surface of the table legs is detachably connected to a decorative cover, which conceals the assembly gap between the top surface of the table legs and the clearance opening. This design allows the mechanical structure at the top of the table legs and the assembly gap between the top of the table legs and the clearance opening to be hidden by the decorative cover, preventing dust from entering the interior through the assembly gap and causing dirt accumulation or getting stuck in the gap, resulting in damage or noise.

[0017] 4. The top of the decorative cover has an upward-extending rib, and the top of the clearance opening has a slot, into which the rib is inserted. This design, through the cooperation of the rib and the slot, can further enhance the pre-positioning effect of the decorative cover on the side panel, and also enable the decorative cover to connect with the side panel. After the side panel is fixed to the back of the tabletop, it can also prevent the decorative cover from falling off to the side.

[0018] 5. The table legs consist of uprights and connecting plates. The connecting plates are fixed to the top of the uprights on the side facing the other table leg and extend towards the other table leg. The connecting plates include support plates and two connecting pieces connected to the front and rear sides of the support plates. The two connecting pieces are attached to the front and rear sides of the crossbeam and are fixed to the crossbeam by fasteners. This design allows the uprights to be fixedly connected to the ends of the crossbeam through the connecting plates. Furthermore, the connecting plates provide a large-area, front-to-back, high-strength rigid connection between the table legs and the crossbeam, thereby improving the reliability of the connection between the table legs and the crossbeam.

[0019] 6. The connecting piece is an inclined piece that gradually approaches another connecting piece in the direction away from the tabletop. The fastener is a screw, and the connecting piece has a through hole for the screw to pass through. The axis of the through hole is perpendicular to the connecting piece. This design allows the distance between the two connecting pieces to gradually increase upwards, thus forming a mounting groove that is wider at the top and narrower at the bottom, facilitating the smooth insertion of the crossbeam end between the two connecting pieces. The perpendicularity of the through hole axis to the connecting piece allows the through hole axis to be tilted, thus bringing the screw tail closer to the tabletop and the screw head further away from the tabletop. This provides a larger operating space between the screw head and the back of the tabletop, making it easier for the user to tighten the screw.

[0020] 7. The table legs also include diagonal braces. One end of the diagonal brace is connected to the inner top of the upright, and the top of the diagonal brace is fixedly connected to the crossbeam. This design compensates for the strength loss caused by the outward movement of the table legs, thus providing stable support for the connecting plate and preventing the connecting plate from bending and deforming. This enhances the stability of the table legs in supporting the crossbeam.

[0021] 8. The table frame also includes a ring frame, which comprises a rounded corner transition plate, two reinforcing plates, and the two side plates. The two ends of the reinforcing plates are connected to the two side plates via the rounded corner transition plate. Both the reinforcing plates and the rounded corner transition plate have curved walls extending downwards and inwards from the lower side of the tabletop. This design further increases the structural stability of the table frame and its support for the tabletop. Furthermore, the rounded corner transition plate design avoids a harsh right-angle connection between the side plates and the reinforcing plates, using a smooth curved transition. Finally, the curved walls extending downwards and inwards from the lower side of the tabletop reduce damage from impacts, are more hand-friendly during handling, and are more aesthetically pleasing from the front compared to a straight surface.

[0022] 9. The crossbeam includes a central beam and two connecting beams on either side of the central beam. The tops of the table legs are fixedly connected to the connecting beams. One of the central beam and the connecting beams has multiple adjustment holes along the length of the crossbeam, and the other has a connecting hole. The connecting hole is fixedly connected to one of the adjustment holes by fasteners. This design allows for the adaptation of tabletops of different sizes by adjusting the connection hole to different adjustment holes, increasing the versatility of the crossbeam.

[0023] 10. The table legs are electrically adjustable. A cable management channel is formed between the crossbeam and the tabletop, housing the controller and cables. The cables connect the controller to the electrically adjustable table legs. This design allows the cables to be concealed within the cable management channel, resulting in a cleaner and more aesthetically pleasing appearance. It also prevents cables from being exposed and getting caught, which could lead to electrical connection failures or tripping over the user. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the lifting table in Embodiment 1 of this utility model when it is placed upright; Figure 2 This is a schematic diagram of the structure of the lifting table when it is inverted in Embodiment 1 of this utility model; Figure 3 This is a schematic diagram of the assembly of the table legs and table frame in Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of the ring frame structure in Embodiment 1 of this utility model; Figure 5 This is an exploded view of the two table legs and the crossbeam in Embodiment 1 of this utility model; Figure 6This is a schematic diagram of the crossbeam structure in Embodiment 1 of this utility model; Figure 7 This is a schematic diagram of a table leg connected to one end of a side panel and a crossbeam in Embodiment 1 of this utility model. Figure 1 ; Figure 8 This is an exploded view of one end of a table leg, side panel, and crossbeam in Embodiment 1 of this utility model. Figure 9 This is a schematic diagram of a table leg connected to one end of a side panel and a crossbeam in Embodiment 1 of this utility model. Figure 2 .

[0025] In the diagram: 100, table frame; 110, side panel; 111, curved wall; 1110, clearance opening; 112, top wall; 120, crossbeam; 1201, first threaded hole; 121, intermediate beam; 1210, adjustment hole; 122, connecting beam; 130, rounded corner transition plate; 140, reinforcing plate; 200, tabletop; 300, table leg; 310, decorative cover; 311, protruding rib; 320, column; 330, connecting plate; 331, support piece; 332, connecting piece; 3321, perforation; 340, diagonal brace; 400, controller; 500, cable. Detailed Implementation

[0026] The present application will now be further described with reference to the accompanying drawings and specific embodiments.

[0027] Example 1: like Figures 1 to 9 As shown, the height-adjustable table in this embodiment includes a table frame 100, a tabletop 200, and two table legs 300 spaced apart on the left and right. The table frame 100 is connected to the back of the tabletop 200, and the table legs 300 are connected to and support the table frame 100. The table frame 100 includes two side plates 110 spaced apart on the left and right and a crossbeam 120 fixedly connected between the two side plates 110. The side plates 110 are located on the edge of the back of the tabletop. The tops of the two table legs 300 are respectively connected to the two ends of the crossbeam 120, and the two table legs 300 are respectively located on the opposite two sides of the tabletop 200.

[0028] In this embodiment, the side panels 110 are located at the edges of the back of the tabletop, specifically the left side panel 110 at the left edge of the back of the tabletop and the right side panel 110 at the right edge of the back of the tabletop. This increases the distance between the two side panels 110. Since the two ends of the crossbeam 120 are connected to the two side panels 110 respectively, placing the side panels 110 at the edges of the back of the tabletop increases the length of the crossbeam 120. Furthermore, since the tops of the two table legs 300 are connected to the two ends of the crossbeam 120, the increased length of the crossbeam 120 also leads to an increase in the distance between the two table legs 300, resulting in the two table legs 300 being located at opposite edges of the tabletop 200. Therefore, by moving the side panels 110 and table legs 300 outwards, this embodiment increases the distance between the two table legs 300, providing more legroom and improving user comfort.

[0029] Better, such as Figure 7 and Figure 8 As shown, in this embodiment, the side panel 110 has an arc-shaped wall 111 facing away from the other side panel 110. The arc-shaped wall 111 extends downward from the lower end of the side of the tabletop 200 and toward the other side panel 110. That is, the top of the arc-shaped wall 111 of the left side panel 110 is flush with the lower end of the left side of the tabletop 200, and the arc-shaped wall 111 extends downward and to the right. The top of the arc-shaped wall 111 of the right side panel 110 is flush with the lower end of the right side of the tabletop 200, and the arc-shaped wall 111 extends downward and to the left. The outer surface of the arc-shaped wall 111 smoothly transitions to the corresponding side of the tabletop 200. By designing the arc-shaped wall 111, damage caused by bumps and knocks can be reduced, and it is more hand-friendly when handling and moving. Moreover, compared to a straight surface, the arc-shaped surface is more aesthetically pleasing when viewed from the front. In addition, the arc-shaped wall 111 in this embodiment is provided with a clearance opening 1110. The top of some of the table legs 300 is inserted into the clearance opening 1110. With this design, the side plate 110 can be pre-positioned by the insertion and cooperation of the top of the table leg 300 with the clearance opening 1110, so as to facilitate the subsequent connection and fixation of the side plate 110 and the crossbeam 120. That is, during assembly, the top of the table leg 300 is connected to the end of the crossbeam 120, and then the top of the table leg 300 is inserted into the clearance opening 1110 to pre-position the side plate 110. Finally, the side plate 110 is fixed to the end of the crossbeam 120.

[0030] In addition, the side panel 110 in this embodiment also includes a top wall 112 that is connected to the top of the arc-shaped wall 111 and extends horizontally toward the other side panel 110. The top wall 112 is fixed to the back of the tabletop 200 by screws.

[0031] like Figure 8 As shown, in this embodiment, the end of the crossbeam 120 is provided with a mounting plate extending forward and backward. The mounting plate is provided with a first threaded hole 1201. The screw passes through the top wall 112 and is fixedly connected to the first threaded hole 1201 so as to realize the side plate 110 fixedly connected to the end of the crossbeam 120.

[0032] Furthermore, in this embodiment, part of the top surface of the table leg 300 supports the end of the crossbeam 120, and part of the top surface is located outside the end of the crossbeam 120 and inserted into the clearance opening 1110. Thus, after the table leg 300 and side panel 110 are assembled, a large assembly gap will form between the portion of the table leg 300 outside the end of the crossbeam 120 and the clearance opening 1110. To conceal this assembly gap, in this embodiment, a decorative cover 310 is detachably connected to the top surface of the table leg 300 by screws. The decorative cover 310 is located outside the end of the crossbeam 120 and conceals the assembly gap between the top surface of the table leg 300 and the clearance opening 1110. This design allows the decorative cover 310 to hide the mechanical structure at the top of the table leg 300 and the assembly gap between the top of the table leg 300 and the clearance opening 1110, preventing dust from entering the interior through the assembly gap and causing dirt accumulation or getting stuck in the gap, resulting in damage or noise.

[0033] In this embodiment, the top of the decorative cover 310 is provided with an upwardly extending rib 311, and the top of the clearance opening 1110 is provided with a slot (not shown in the figure), in which the rib 311 is inserted. With this design, the cooperation between the rib 311 and the slot can not only further enhance the pre-positioning effect of the decorative cover 310 on the side plate 110, but also enable the decorative cover 310 to be connected to the side plate 110. After the side plate 110 is fixed to the back of the tabletop 200, it can also prevent the decorative cover 310 from falling off laterally.

[0034] It is understood that in other embodiments of this utility model, the decorative cover may also be integrally formed with the top of the table leg to eliminate the assembly steps of the two.

[0035] In addition, the table leg 300 in this embodiment also includes a column 320 and a connecting plate 330. The connecting plate 330 is fixed to the top of the column 320 on the side facing the other table leg 300 and extends towards the other table leg 300. The connecting plate 330 includes a support piece 331 extending horizontally to the left and right and two connecting pieces 332 connected to the front and rear sides of the support piece 331. The two connecting pieces 332 are attached to the front and rear sides of the crossbeam 120 and are fixed to the crossbeam 120 by fasteners, which are screws. This design allows the column 320 to be fixedly connected to the end of the crossbeam 120 through the connecting plate 330. The setting of the connecting plate 330 realizes a large-area, front-to-back, high-strength rigid connection between the table leg 300 and the crossbeam 120, thereby improving the connection reliability between the table leg 300 and the crossbeam 120.

[0036] To facilitate screwing, in this embodiment, the connecting piece 332 is an inclined piece that gradually approaches another connecting piece 332 in a direction away from the table 200. The connecting piece 332 is provided with a through hole 3321 for the screw to pass through, and the axis of the through hole 3321 is perpendicular to the plane of the connecting piece 332. This design allows the distance between the two connecting pieces 332 to gradually increase upwards, thus forming a mounting groove that is wider at the top and narrower at the bottom on the mounting plate. The front and rear sides of the crossbeam 120 are parallel to the two connecting pieces 332, and the bottom surface of the crossbeam 120 is in contact with the support piece 331. This allows the end of the crossbeam 120 to be smoothly inserted between the two connecting pieces 332, and the two connecting pieces 332 to be in contact with the front and rear sides of the crossbeam 120 respectively. The axis of the through hole 3321 is perpendicular to the connecting piece 332, which allows the axis of the through hole 3321 to be tilted. This causes the tail of the screw to be closer to the table 200 and the head of the screw to be farther away from the table 200, resulting in a larger operating space between the screw head and the back of the table 200, making it easier for the user to tighten the screw.

[0037] To further enhance the support stability of the table leg 300 to the table frame 100, the table leg 300 also includes a diagonal brace 340. One end of the diagonal brace 340 is welded to the inner top of the column 320, and the top of the diagonal brace 340 is fixedly connected to the crossbeam 120. Preferably, the top of the diagonal brace 340 is welded to the support plate 331. With this design, the diagonal brace 340 can compensate for the strength loss caused by the outward movement of the table leg 300, so as to achieve stable support for the connecting plate 330 and prevent the connecting plate 330 from bending and deforming, thereby enhancing the support stability of the table leg 300 to the crossbeam 120.

[0038] In addition, such as Figure 6 As shown, the crossbeam 120 in this embodiment includes a middle beam 121 and two connecting beams 122 connected to both sides of the middle beam 121. Both the middle beam 121 and the connecting beams 122 include a bottom wall and inclined walls on the front and rear sides of the bottom wall. The inclination angle of the two inclined walls is adapted to the inclination angle of the two connecting pieces 332. The top of the table leg 300 is fixedly connected to the connecting beam 122, that is, the two connecting pieces 332 abut against the outer side of the two inclined walls of the connecting beam 122 away from the middle beam 121 and are fixed by screws. The other end of the connecting beam 122 is inserted into the middle beam 121. The middle beam 121 is provided with a plurality of adjustment holes 1210 arranged along the length direction of the crossbeam 120. The connecting beam 122 is provided with a connecting hole, and the connecting hole is fixedly connected to one of the adjustment holes 1210 by fasteners (screws). With this design, the crossbeam 120 can be extended and retracted by adjusting the connection hole to different adjustment holes 1210 to adapt to tabletops 200 of different sizes, increasing the versatility of the crossbeam 120.

[0039] It is understood that in other embodiments of this utility model, the other end of the connecting beam is provided with a plurality of adjustment holes spaced apart along the length of the crossbeam, while the two ends of the middle beam are provided with connecting holes. The connecting hole is selected according to the length of the tabletop and fixedly connected with one of the adjustment holes by fasteners, so that the length of the crossbeam can be adapted to the tabletop. That is, the crossbeam can be adapted to tabletops of different sizes by extending and retracting, thus increasing the versatility of the crossbeam.

[0040] like Figure 3 and Figure 4 As shown, to further enhance the structural stability of the table frame 100, the table frame 100 in this embodiment also includes an annular frame. The annular frame includes a rounded corner transition plate 130, two reinforcing plates 140, and the two side plates 110. One reinforcing plate 140 has its two ends connected to one end of each of the two side plates 110 via the two rounded corner transition plates 130, and the other reinforcing plate 140 has its two ends connected to the other ends of each of the two side plates 110 via the two rounded corner transition plates 130. The reinforcing plates 140 are fixed to the back of the tabletop 200 with screws. Both the reinforcing plates 140 and the rounded corner transition plates 130 have a bottom edge on the side of the tabletop 200. The downward and inward-extending curved wall design further enhances the structural stability of the table frame 100 and its support for the tabletop 200. Furthermore, the rounded corner transition plate 130 avoids a harsh right-angle connection between the side panel 110 and the reinforcing plate 140, using a smooth curved transition. Finally, both the reinforcing plate 140 and the rounded corner transition plate 130 have curved walls extending downward and inward from the lower side of the tabletop 200, reducing damage from impacts and making them more hand-friendly during handling. Compared to a straight surface, the curved surface is more aesthetically pleasing from the front. Additionally, the outer side of the curved wall smoothly transitions to the side of the tabletop.

[0041] It should be noted that when the crossbeam 120 is telescopic, the two reinforcing plates 140 are also set as telescopic reinforcing plates. For details, please refer to the telescopic structure of the crossbeam 120, which will not be described in detail here.

[0042] Finally, in this embodiment, the table legs 300 are electrically adjustable, meaning the uprights 320 are electrically adjustable. After the crossbeam 120 is fixed to the back of the tabletop 200 with screws, a cable routing channel is formed between the crossbeam 120 and the back of the tabletop 200. The cable routing channel contains a controller 400 and a cable 500, which connects the controller 400 to the electrically adjustable uprights. This design allows the cable 500 to be concealed within the cable routing channel, resulting in a simpler and more aesthetically pleasing appearance and preventing the cable from being exposed and snagged, potentially causing electrical connection failure or tripping over the user.

[0043] In addition to the preferred embodiments described above, there are other embodiments of this utility model. Those skilled in the art can make various changes and modifications based on this utility model. As long as they do not depart from the spirit of this utility model, they should all fall within the scope defined in the claims of this utility model.

Claims

1. A height-adjustable table, comprising a table frame, a tabletop, and two table legs, wherein the table frame is connected to the back of the tabletop, and the table legs are connected to and support the table frame, the table frame comprising two side panels spaced apart from each other and a crossbeam fixedly connected between the two side panels, characterized in that, The side panel is located on the edge of the back of the tabletop, and the tops of the two table legs are respectively connected to the two ends of the crossbeam, and the two table legs are respectively located on the opposite sides of the tabletop.

2. The height-adjustable desk as described in claim 1, characterized in that, The side panel has an arc-shaped wall that faces away from the other side panel. The arc-shaped wall extends downward from the lower side of the tabletop and toward the other side panel. The arc-shaped wall has a clearance opening, and the top of part of the table leg is inserted into the clearance opening.

3. The height-adjustable desk as described in claim 2, characterized in that, The top surface of the table leg is detachably connected to a decorative cover, which covers the assembly gap between the top surface of the table leg and the clearance opening.

4. The height-adjustable desk as described in claim 3, characterized in that, The decorative cover has an upwardly extending rib at its top, and the clearance opening has a slot at its top, into which the rib is inserted.

5. The height-adjustable desk as described in claim 1, characterized in that, The table leg includes a column and a connecting plate. The connecting plate is fixed to the top of the column on one side facing the other table leg and extends towards the other table leg. The connecting plate includes a support piece and two connecting pieces connected to the front and rear sides of the support piece. The two connecting pieces are attached to the front and rear sides of the crossbeam and are fixed to the crossbeam by fasteners.

6. The height-adjustable desk as described in claim 5, characterized in that, The connecting piece is an inclined piece that gradually moves towards another connecting piece in a direction away from the tabletop. The fastener is a screw. The connecting piece has a through hole for the screw to pass through, and the axis of the through hole is perpendicular to the connecting piece.

7. The height-adjustable desk as described in claim 1, characterized in that, The table legs also include diagonal braces, one end of which is connected to the inner top of the column, and the top of which is fixedly connected to the crossbeam.

8. The height-adjustable desk as described in claim 1, characterized in that, The table frame also includes a ring frame, which includes a rounded corner transition plate, two reinforcing plates and the two side plates. The two ends of the reinforcing plates are respectively connected to the two side plates through the rounded corner transition plate. Both the reinforcing plates and the rounded corner transition plates have arc-shaped walls that extend downward and inward from the lower side of the table.

9. The height-adjustable desk as described in claim 1, characterized in that, The crossbeam includes a middle beam and two connecting beams on both sides of the middle beam. The top of the table leg is fixedly connected to the connecting beam. One of the middle beam and the connecting beam is provided with multiple adjustment holes arranged along the length of the crossbeam, and the other is provided with a connecting hole. The connecting hole is fixedly connected to one of the adjustment holes by fasteners.

10. The height-adjustable desk as described in claim 1, characterized in that, The table legs are electrically adjustable. A cable routing channel is formed between the crossbeam and the tabletop. A controller and cables are installed in the cable routing channel, and the cables connect the controller and the electrically adjustable table legs.

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