Desk with foldable desktop and desk bucket

Abstract

The utility model relates to the technical field of study desks, in particular to a desk with a foldable desk top and a foldable desk bucket, which comprises desk legs, and connecting rods are arranged above the desk legs at intervals. The top end of each connecting rod is coaxially hinged to a first transverse frame and a first vertical frame. A movable rod is movably installed in each first transverse frame, one end of each movable rod is elastically connected with the corresponding first transverse frame, and the other end of each movable rod is fixedly connected with a clamping column. A first clamping groove and a second clamping groove are respectively formed in the first vertical frame and the connecting rod, and the clamping column is respectively clamped with the first clamping groove and the second clamping groove; a push rod is movably mounted on the first vertical frame; the device further comprises two second transverse frames and two second vertical frames. The second transverse frame, the second vertical frame, the first transverse frame and the first vertical frame on the same side are sequentially hinged to form a parallelogram structure; a desktop is fixedly connected to the top ends of the two second transverse frames; the desk bucket bottom plate and the desk top are folded, the folded inclined desk top can be used as a backrest, and students can have a rest conveniently.

Description

Technical Field

[0001] This utility model relates to the field of school desk technology, and in particular to a desk with a foldable desktop and drawer. Background Technology

[0002] Afternoon naps are essential for teenagers, but due to limited resources, most primary and secondary school students can only nap in the classroom. Therefore, it is necessary to design a desk that is convenient for students to take a nap.

[0003] One current solution to this problem is to combine desks and chairs to assemble them into simple nap beds for students. However, this type of desk and chair has a complex structure, is difficult to adjust, and requires the desks and chairs to be used together. If one of them malfunctions, the entire set of desks and chairs needs to be replaced, resulting in high operating costs. The second solution is to convert the chairs or desks into reclining chairs separately. However, in this case, students usually need to lift the desk or crawl under it. For older students, this operation is inconvenient and less safe, failing to achieve the purpose of rest.

[0004] Therefore, in order to address the above problems, this utility model urgently needs to provide a desk with a foldable desktop and drawer. Utility Model Content

[0005] The purpose of this utility model is to provide a desk with a foldable desktop and drawer. By folding the bottom plate of the drawer and the desktop, the tilted desktop after folding can be used as a backrest for lunch break, which is convenient for students to rest. This solves the problems of inconvenience in adjustment and high cost of use in the existing technology.

[0006] A foldable desk with a tabletop and drawer includes table legs, and two parallel and inclined connecting rods are spaced apart above the table legs; the top of each connecting rod is coaxially hinged to a first horizontal frame and a first vertical frame, wherein the first horizontal frame is located above the connecting rod.

[0007] Each first horizontal frame has a movable rod installed along its length. One end of the movable rod is elastically connected to the first horizontal frame, and the other end is fixedly connected to a snap-fit ​​post. The first vertical frame and the connecting rod are respectively provided with a first snap-fit ​​groove and a second snap-fit ​​groove that have the same shape and size and coincide with the axis. The snap-fit ​​post is snapped and fixed to the first snap-fit ​​groove and the second snap-fit ​​groove respectively. The first vertical frame is also movably installed with a push rod for pushing the snap-fit ​​post out of the first snap-fit ​​groove and the second snap-fit ​​groove.

[0008] It also includes two second horizontal frames with one end hinged to the first vertical frame and two second vertical frames with one end hinged to the first horizontal frame; the second horizontal frame, the second vertical frame, the first horizontal frame and the first vertical frame on the same side are sequentially hinged to form a parallelogram structure in the vertical plane; the top of the two second horizontal frames is fixed to a tabletop.

[0009] Furthermore, each of the first horizontal frames is provided with a movable groove along its length, and the movable rod can be slidably installed in the movable groove. It also includes a first spring, with its two ends connected to the movable rod and the first horizontal frame, respectively.

[0010] Furthermore, the push rod has a vertically arranged adjustment elongated hole that matches the hinge rod of the connecting rod, the first vertical frame, and the first horizontal frame. The adjustment elongated hole passes through the hinge rod. The bottom end of the push rod extends towards the movable rod and has a push-opening slope. The push-opening slope is used to push the movable rod to compress the first spring as it moves upward along the hinge rod with the adjustment elongated hole, pushing the locking pin out of the first locking groove and the second locking groove. It also includes a second spring, the two ends of which are respectively connected to the top end of the push rod and the first vertical frame, and are used to push the push rod so that the top of the adjustment elongated hole contacts the hinge rod. The top end of the push rod also has a handle extending laterally.

[0011] Furthermore, a lower horizontal bar is provided at the bottom end of the first vertical frame extending toward the second vertical frame, and a first locking groove with a horizontal axis is provided on the outer end face of the lower horizontal bar; a second locking groove with the same shape and size as the first locking groove is provided on one side of the top end of the connecting rod.

[0012] Furthermore, an inner crossbar is installed inside the first horizontal frame by screws, and the height of the inner crossbar is adjustable; a movable slide is opened in the inner crossbar along the length direction.

[0013] Furthermore, the first horizontal frame and the second horizontal frame are respectively provided with corresponding lower connecting holes and upper connecting holes, and also include multiple table drawer side baffles with the same length as the first vertical frame. The upper and lower ends of each table drawer side baffle are respectively hinged to the upper connecting hole and the lower connecting hole.

[0014] Furthermore, a lower crossbeam is connected between the bottom ends of the two second vertical frames, and an upper crossbeam is connected between the top ends of the two second vertical frames; it also includes a table drawer back panel, the upper and lower sides of which are hinged to the upper and lower crossbeams respectively.

[0015] Furthermore, a table bottom plate is fixed between the two first horizontal frames; a handle for lifting the table is also provided on the side of the table surface away from the back panel of the table bottom.

[0016] Furthermore, a connecting beam connects the two connecting rods.

[0017] Furthermore, the table legs include two spaced-apart feet, with an outer sleeve extending upward from the middle of the two feet. An inner support column is retractably provided inside the outer sleeve, and the tops of the two inner support columns are respectively fixed to the bottoms of two connecting rods. U-shaped brackets are also connected to the two outer sleeves.

[0018] The foldable desk with a foldable tabletop and drawers provided by this utility model has the following advantages compared with the prior art:

[0019] This utility model provides a foldable desk with a foldable desktop and drawer. The first vertical frame, the first horizontal frame, and the connecting rod are hinged together to form a parallelogram in a vertical plane. These are then secured by locking posts, allowing the first vertical frame, the first horizontal frame, the second vertical frame, and the second horizontal frame to form a rectangle in a vertical plane. The desktop is installed on the upper surface of the two second horizontal frames, ensuring the desktop remains horizontal during use. When students need to take a nap, a push rod pushes the locking posts out of the first and second locking slots, unlocking the first vertical frame, the first horizontal frame, and the connecting rod. Pulling the desktop upwards causes one side of the drawer's rear panel to rotate downwards under gravity until the angle between the first horizontal frame and the connecting rod reaches its minimum. Pulling the desktop forward further until the first horizontal frame... When the distance between the frame and the second horizontal frame is minimized, the desktop is lowered and tilted, allowing the lowered chair back to fit against the desktop, providing support for the chair back. There is no need to lower the chair below the desk drawer to enter a resting state. Students do not need to nap under the desk drawer; instead, they can lean against the tilted desktop, preventing injury when crawling under the desk. When the desk needs to be used again after the nap, the desktop and desk drawer base are lifted, and the first vertical frame is rotated along the hinge rod. The second spring pushes the push rod downwards until it contacts the upper surface of the adjustment hole, and the first spring pushes the movable rod outwards into the movable slot, allowing the locking pin to re-enter the first and second locking slots, fixing the first vertical frame, the first horizontal frame, and the connecting rod, thus switching to the usable state. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram (perspective view) of the foldable desk with a tabletop and drawer described in this utility model;

[0022] Figure 2 This is a schematic diagram (three-dimensional view) of the second angle of the foldable desk with tabletop and drawer described in this utility model;

[0023] Figure 3 This is a schematic diagram (third-angle perspective view) of the foldable desk with desktop and drawer described in this utility model from a third angle.

[0024] Figure 4 This is a schematic diagram (side view) of the foldable desk with a desktop and drawer described in this utility model;

[0025] Figure 5 This is a schematic diagram (sectional view) of the foldable desk with a tabletop and drawers described in this utility model.

[0026] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0027] Figure 7 This is a schematic diagram (perspective view) of the legs of the foldable desk with tabletop and drawer described in this utility model;

[0028] Figure 8 This is a schematic diagram (perspective view) of the push rod described in this utility model;

[0029] Figure 9 This is a three-dimensional view showing the installation of the push rod and the first vertical frame in this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Connecting rod; 2. Movable rod; 3. Snap-fit ​​post; 4. First horizontal frame; 5. First vertical frame; 6. Tabletop; 7. Drawer bottom plate; 8. Connecting beam; 9. First snap-fit ​​groove; 10. Second snap-fit ​​groove; 11. Push rod; 12. Second horizontal frame; 13. Second vertical frame; 14. First spring; 15. Hinge rod; 16. Adjusting elongated hole; 17. Push-open ramp; 18. Second spring; 19. Lower horizontal bar; 20. Inner horizontal bar; 21. Handle; 22. Upper connecting hole; 23. Drawer side panel; 24. Lower connecting hole; 25. Lower crossbeam; 26. Upper crossbeam; 27. Drawer rear panel; 28. Handrail position; 29. ​​Support leg; 30. Outer sleeve; 31. Inner support column; 32. U-shaped stop; 33. Movable slide. Detailed Implementation

[0032] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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 this utility model.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the present invention provides a foldable desk with a tabletop and drawer, including table legs, and two parallel and inclined connecting rods 1 are provided at intervals above the table legs; the top of each connecting rod 1 is coaxially hinged to a first horizontal frame 4 and a first vertical frame 5, wherein the first horizontal frame 4 is located above the connecting rod 1.

[0036] Movable rods 2 are movably installed along the length direction inside each first horizontal frame 4. One end of the movable rod 2 is elastically connected to the first horizontal frame 4, and the other end is fixedly connected to a snap-fit ​​post 3. The first vertical frame 5 and the connecting rod 1 are respectively provided with a first snap-fit ​​groove 9 and a second snap-fit ​​groove 10 that have the same shape and size and coincide with the axis. The snap-fit ​​post 3 is snapped and fixed to the first snap-fit ​​groove 9 and the second snap-fit ​​groove 10 respectively. The first vertical frame 5 is also movably installed with a push rod 11 for pushing the snap-fit ​​post 3 out of the first snap-fit ​​groove 9 and the second snap-fit ​​groove 10.

[0037] It also includes two second horizontal frames 12 with one end hinged to the first vertical frame 5 and two second vertical frames 13 with one end hinged to the first horizontal frame 4; the second horizontal frame 12, the second vertical frame 13, the first horizontal frame 4 and the first vertical frame 5 on the same side are sequentially hinged to form a parallelogram structure in the vertical plane; the top of the two second horizontal frames 12 is fixed to a tabletop 6.

[0038] This utility model provides a foldable desk with a foldable desktop and drawer. The first vertical frame 5, the first horizontal frame 4, and the connecting rod 1 are hinged together and then secured by locking pins 3, forming a rectangle in a vertical plane. The desktop 6 is installed on the upper surface of the two second horizontal frames 12, thus keeping the desktop 6 horizontal in use. When students need to take a nap, the locking pins 3 are pushed out of the first locking slot 9 and the second locking slot 10 by the push rod 11, thereby unlocking the first vertical frame 5, the first horizontal frame 4, and the connecting rod 1. At this time, pulling the desktop 6 upwards causes one side of the drawer's rear panel 27 to rotate downwards under gravity until the angle between the first horizontal frame 4 and the connecting rod 1 reaches its minimum value. Specifically, this can be achieved by the bottom end of the first horizontal frame 4 contacting the upper surface of the connecting rod 1, or by providing support feet at the bottom of the connecting rod 1 or the first horizontal frame 4, thus maintaining the angle between the first horizontal frame 4 and the connecting rod 1 at its minimum value. The loose contact prevents students from squeezing their fingers when operating the folding desk. Continue pulling the desktop 6 forward until the distance between the first horizontal frame 4 and the second horizontal frame 12 is minimized. At this point, the desktop 6 is lowered and tilted, allowing the lowered seat back to fit against the desktop 6, providing support. The seat does not need to be lowered below the desk drawer bottom plate 7, allowing for a resting state. Students do not need to nap under the desk drawer bottom plate 7 but can lean against the tilted desktop 6, preventing injury when crawling under the desk. When the desk 6 needs to be used again after the nap, lift the desktop 6 and desk drawer bottom plate 7, rotate the first vertical frame 5 along the hinge rod 15, and the second spring 18 pushes the push rod 11 downwards until it contacts the upper surface of the adjusting elongated hole 16. The first spring 14 pushes the movable rod 2 outwards into the movable slide groove 33, causing the locking pin 3 to re-enter the first locking groove 9 and the second locking groove 10, fixing the first vertical frame 5, the first horizontal frame 4, and the connecting rod 1, thus switching to the usable state.

[0039] like Figure 5 , Figure 6 As shown, each of the first horizontal frames 4 has a movable groove 33 horizontally arranged along its length. The movable rod 2 can be slidably installed in the movable groove 33. It also includes a first spring 14, with both ends of the first spring 14 connected to the movable rod 2 and the first horizontal frame 4, respectively.

[0040] In this invention, the movable rod 2 and the first horizontal frame 4 are elastically connected by the first spring 14. In use, the first spring 14 pushes the movable rod 2, causing the locking post 3 to engage with the first locking groove 9 and the second locking groove 10, thereby fixing the first vertical frame 5, the first horizontal frame 4 and the connecting rod 1. When the push rod 11 is pushed, the first spring 14 can be compressed along the length direction, causing the locking post 3 to disengage from the first locking groove 9 and the second locking groove 10, thus unlocking the first vertical frame 5, the first horizontal frame 4 and the connecting rod 1.

[0041] like Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, the push rod 11 has a vertically arranged adjustment elongated hole 16 that matches the hinge rod 15 of the connecting rod 1, the first vertical frame 5, and the first horizontal frame 4. The adjustment elongated hole 16 passes through the hinge rod 15. The bottom end of the push rod 11 extends towards the movable rod 2 and has a push-opening inclined surface 17. The push-opening inclined surface 17 is used to push the movable rod 2 to compress the first spring 14 as the adjustment elongated hole 16 moves upward along the hinge rod 15, pushing the locking post 3 out of the first locking groove 9 and the second locking groove 10. It also includes a second spring 18. The two ends of the second spring 18 are respectively connected to the top end of the push rod 11 and the first vertical frame 5, and are used to push the push rod 11 so that the top of the adjustment elongated hole 16 contacts the hinge rod 15. The top end of the push rod 11 also has a handle 21 extending laterally.

[0042] In this invention, the second spring 18 can keep the push rod 11 in its natural state at the bottom of the first vertical frame 5, preventing accidental contact and causing items in the drawer and on the tabletop 6 to fall out.

[0043] like Figure 5 , Figure 6 , Figure 7 , Figure 9 As shown, a lower horizontal bar 19 extends from the bottom of the first vertical frame 5 toward the direction of the second vertical frame 13. A first locking groove 9 with a horizontal axis is provided on the outer end face of the lower horizontal bar 19. A second locking groove 10 with the same shape and size as the first locking groove 9 is provided on one side of the top of the connecting rod 1.

[0044] like Figure 5 , Figure 6 As shown, an inner crossbar 20 is installed inside the first horizontal frame 4 by screws, and the height of the inner crossbar 20 is adjustable; a movable slide 33 is opened in the inner crossbar 20 along the length direction.

[0045] In this utility model, such as Figure 6As shown, the top of the first horizontal frame 4 is open, and its cross-section is U-shaped. Two screws are used to thread through the bottom plate of the first horizontal frame 4 and screw it to the inner horizontal bar 20. Then, a screw is used to thread through the top of the inner horizontal bar 20 and connect it to the bottom plate of the first horizontal frame 4. With the above design, when the tabletop 6 is folded multiple times, the locking post 3 continuously rubs against the first locking groove 9 and the second locking groove 10, causing the locking surfaces of the first locking groove 9 and the second locking groove 10 to decrease. This causes the first horizontal frame 4 to rotate downward along the hinge rod 15 after locking, resulting in the tabletop 6 not being horizontal and affecting its use. At this time, by adjusting the screw, the inner horizontal bar 20 can be adjusted downward along the first horizontal frame 4, thereby maintaining the horizontality of the first horizontal frame 4 after locking. According to the parallelogram principle, the tabletop 6 fixed to the second horizontal frame 12 can be kept horizontal, extending the service life of the table.

[0046] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 8 , Figure 9 As shown, the first horizontal frame 4 and the second horizontal frame 12 are respectively provided with corresponding lower connecting holes 24 and upper connecting holes 22. It also includes a plurality of table drawer side baffles 23 with the same length as the first vertical frame 5. The upper and lower ends of each table drawer side baffle 23 are respectively hinged to the upper connecting hole 22 and the lower connecting hole 24.

[0047] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, a lower crossbeam 25 is connected between the bottom ends of the two second vertical frames 13, and an upper crossbeam 26 is connected between the top ends of the two second vertical frames 13; it also includes a table drawer back panel 27, the upper and lower sides of which are hinged to the upper crossbeam 26 and the lower crossbeam 25, respectively.

[0048] like Figure 3 As shown, a table bottom plate 7 is fixed between the two first horizontal frames 4; a handle position 28 for lifting the table 6 is also provided on the side of the lower surface of the tabletop 6 away from the back baffle 27 of the table bottom.

[0049] In this invention, the tabletop 6 can be easily lifted by the handle 28, making it convenient to fold the table drawer.

[0050] In this utility model, when the first vertical frame 5, the first horizontal frame 4 and the connecting rod 1 are unlocked, the bottom plate 7 of the table drawer moves downward and the tabletop 6 moves upward. The space between the tabletop 6 and the bottom plate 7 of the table drawer and the gaps between the frames are open, which can easily trap hands. After the side baffle 23 of the table drawer is hinged through the upper connecting hole 22 and the lower connecting hole 24, the gap can be blocked to prevent hands from being trapped. In addition, when the table is in use, the side baffle 23 of the table drawer can also block the items inside the table drawer to prevent them from falling out.

[0051] In this utility model, the table drawer rear baffle 27, which is hinged to the upper crossbeam 26 and the lower crossbeam 25, can block the items placed inside the table drawer in the use state to prevent them from falling out; while in the folded state and when folded, it can move simultaneously with the second vertical frame 13 without affecting the folding of the table drawer.

[0052] like Figure 2 As shown, a connecting beam 8 is also connected between the two connecting rods 1.

[0053] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 As shown, the table legs include two spaced-apart legs 29. An outer sleeve 30 extends upward from the middle part of the two legs 29. An inner support column 31 is telescopically provided inside the outer sleeve 30. The tops of the two inner support columns 31 are respectively fixed to the bottoms of the two connecting rods 1. A U-shaped bracket 32 ​​is also connected to the two outer sleeves 30.

[0054] The embodiments of this utility model include the following steps:

[0055] 1) In use, the first vertical frame 5, the first horizontal frame 4 and the connecting rod 1 are hinged and fixed by the snap-fit ​​post 3, so that the first vertical frame 5, the first horizontal frame 4, the second vertical frame 13 and the second horizontal frame 12 form a rectangle in the vertical plane. At this time, the tabletop 6 remains horizontal and can be used normally.

[0056] 2) When a lunch break is needed, lift the push rod 11 upwards, push open the inclined surface 17 to push the locking post 3 out of the first locking slot 9 and the second locking slot 10, thereby unlocking the first vertical frame 5, the first horizontal frame 4 and the connecting rod 1. At this time, pull the tabletop 6 upwards, and the end of the first horizontal frame 4 away from the hinge rod 15 will rotate downwards under the action of gravity until the angle between the first horizontal frame 4 and the connecting rod 1 reaches the minimum value. Continue to pull the tabletop 6 forward until the distance between the first horizontal frame 4 and the second horizontal frame 12 reaches the minimum value. At this time, the tabletop 6 is lowered and tilted, and the lowered chair back can be pressed against the tabletop 6 to provide support for the chair back and enter the resting state. At this time, students do not need to rest under the bottom plate 7 of the desk drawer, but lean against the tilted tabletop 6 to avoid injury when students crawl under or out of the desk.

[0057] Specifically, the front end of the first horizontal frame 4 is provided with an arc baffle with the hinge rod 15 as the center. When the first horizontal frame 4 rotates downward, it stops rotating when the root of the arc baffle contacts the opening at the top of the connecting rod 1. At this time, there is still a certain distance between the bottom plane of the first horizontal frame 4 and the top inclined surface of the connecting rod 1. Through the above design, the user's hand can be prevented from being squeezed between the first horizontal frame 4 and the connecting rod 1 when the first horizontal frame 4 rotates downward to the bottom, thus enhancing the safety of the desk during use.

[0058] 3) When the lunch break ends and the desktop 6 needs to be used again, lift the desktop 6 and the bottom plate 7 of the drawer upwards, rotate the first vertical frame 5 along the hinge rod 15, the second spring 18 pushes the push rod 11 downwards to the upper surface of the adjustment hole 16 and abuts against the hinge rod 15, the first spring 14 pushes the movable rod 2 outwards into the movable slide groove 33, so that the locking post 3 re-enters the first locking groove 9 and the second locking groove 10, fixing the first vertical frame 5, the first horizontal frame 4 and the connecting rod 1, and can then be put into use.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A foldable desk with a foldable tabletop and drawers, characterized in that: The table includes table legs, and two parallel and inclined connecting rods (1) are provided at intervals above the table legs; the top of each connecting rod (1) is coaxially hinged to a first horizontal frame (4) and a first vertical frame (5), wherein the first horizontal frame (4) is located above the connecting rod (1). Movable rods (2) are movably installed along the length direction inside each first horizontal frame (4). One end of the movable rod (2) is elastically connected to the first horizontal frame (4), and the other end is fixedly connected to a snap-fit ​​post (3). The first vertical frame (5) and the connecting rod (1) are respectively provided with a first snap-fit ​​groove (9) and a second snap-fit ​​groove (10) with the same shape and size and the same axis. The snap-fit ​​post (3) is snapped and fixed to the first snap-fit ​​groove (9) and the second snap-fit ​​groove (10) respectively. The first vertical frame (5) is also movably installed with a push rod (11) for pushing the snap-fit ​​post (3) out of the first snap-fit ​​groove (9) and the second snap-fit ​​groove (10). It also includes two second horizontal frames (12) with one end hinged to the first vertical frame (5) and two second vertical frames (13) with one end hinged to the first horizontal frame (4); the second horizontal frame (12), the second vertical frame (13), the first horizontal frame (4) and the first vertical frame (5) on the same side are hinged in sequence to form a parallelogram structure in the vertical plane; the top of the two second horizontal frames (12) is fixed to a tabletop (6).

2. The foldable desk with a tabletop and drawer according to claim 1, characterized in that: Each first horizontal frame (4) has a horizontal movable groove (33) along its inner length. The movable rod (2) can be slidably installed in the movable groove (33). It also includes a first spring (14), the two ends of which are connected to the movable rod (2) and the first horizontal frame (4) respectively.

3. The foldable desk with a desktop and drawer according to claim 2, characterized in that: The push rod (11) has a vertically arranged adjustment elongated hole (16) that matches the hinge rod (15) of the connecting rod (1), the first vertical frame (5) and the first horizontal frame (4). The adjustment elongated hole (16) passes through the hinge rod (15). The bottom end of the push rod (11) extends towards the movable rod (2) and has a push-opening inclined surface (17). The push-opening inclined surface (17) is used to push the movable rod (2) to compress the first spring (14) as the adjustment elongated hole (16) moves upward along the hinge rod (15), and push the locking post (3) out of the first locking groove (9) and the second locking groove (10). It also includes a second spring (18). The two ends of the second spring (18) are respectively connected to the top end of the push rod (11) and the first vertical frame (5) to push the push rod (11) so that the top of the adjustment elongated hole (16) contacts the hinge rod (15). The top end of the push rod (11) also has a handle (21) extending laterally.

4. The foldable desk with a tabletop and drawer according to claim 3, characterized in that: The bottom end of the first vertical frame (5) extends towards the second vertical frame (13) and is provided with a lower horizontal bar (19). The outer end face of the lower horizontal bar (19) is provided with a first locking groove (9) with a horizontal axis. The top side of the connecting rod (1) is provided with a second locking groove (10) that coincides with the axis of the first locking groove (9) and has the same shape and size.

5. The foldable desk with a desktop and drawer according to claim 4, characterized in that: An inner crossbar (20) is installed inside the first horizontal frame (4) by screws, and the height of the inner crossbar (20) is adjustable; a movable slide (33) is opened in the inner crossbar (20) along the length direction.

6. The foldable desk with a desktop and drawer according to claim 5, characterized in that: The first horizontal frame (4) and the second horizontal frame (12) are respectively provided with corresponding lower connecting holes (24) and upper connecting holes (22), and also include multiple table drawer side baffles (23) with the same length as the first vertical frame (5). The upper and lower ends of each table drawer side baffle (23) are respectively hinged to the upper connecting hole (22) and the lower connecting hole (24).

7. The foldable desk with a tabletop and drawer according to claim 6, characterized in that: A lower crossbeam (25) is connected between the bottom ends of the two second vertical frames (13), and an upper crossbeam (26) is connected between the top ends of the two second vertical frames (13); it also includes a table drawer back panel (27), the upper and lower sides of which are hinged to the upper crossbeam (26) and the lower crossbeam (25) respectively.

8. The foldable desk with a tabletop and drawer according to claim 7, characterized in that: A table bottom plate (7) is fixed between the two first horizontal frames (4); a handle (28) for lifting the table (6) is also provided on the side of the lower surface of the tabletop (6) away from the back panel (27) of the table.

9. The foldable desk with tabletop and drawer according to claim 8, characterized in that: A connecting beam (8) is also connected between the two connecting rods (1).

10. The foldable desk with a tabletop and drawer according to claim 9, characterized in that: The table legs include two spaced-apart legs (29), and an outer sleeve (30) extends upward from the middle part of the two legs (29). An inner support column (31) is telescopically provided inside the outer sleeve (30). The tops of the two inner support columns (31) are respectively fixed to the bottoms of the two connecting rods (1). A U-shaped bracket (32) is also connected to the two outer sleeves (30).

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