Hidden storage desk convenient to adjust

Abstract

The utility model discloses a hidden storage desk convenient to adjust, which relates to the technical field of desks and comprises a desk panel, a storage box and four desk legs fixedly connected to the bottom of the desk panel. Rail grooves are formed in the side walls of the table legs, the storage box is in sliding connection with the four table legs, sliding blocks are symmetrically and fixedly connected to the two sides of the storage box, pulleys are rotationally connected to the exteriors of the sliding blocks, and the pulleys make contact with the inner walls of the rail grooves; a bottom frame is fixedly connected between the bottoms of every two table legs. The storage box capable of moving up and down is arranged, in daily use, the storage box is lifted to make contact with the bottom of the table top plate, the storage box is fixed through the positioning assembly, and therefore daily taking and placing operation is facilitated; and during the examination, the storage box can be lowered to realize hiding, so that the storage box is lowered to a position close to the feet, the opening part of the storage box can be separated from the eyes of the examinee without lifting the table, and the cheating condition is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to desk technical field, concretely relates to a convenient adjustment hidden type storage desk. BACKGROUND

[0002] The desk is used for school or educational institution, and students sit and study and write when having a class, and it is usually composed of a desktop and one or more seats, can provide a flat surface, and is convenient for writing, reading and placing books, stationery and other learning materials, and the desk is also designed with storage space, such as a drawer or a shelf, for storing stationery and books.

[0003] The existing desk design usually faces the drawer opening towards the user, so that students can conveniently take and place articles, however, in the examination process, in order to prevent cheating, the school usually adopts the way of turning over the desk to make the drawer forward, and this method is effective in preventing cheating, but also has some obvious problems: manual turning over of the desk needs a large operating force and space, especially when carrying out large-scale examination room arrangement, the operation is not flexible enough, and the operation is large; frequent turning over operation can cause wear of the desk legs, affect the durability and stability of the desk, increase the maintenance cost of the school, and the desk legs are greatly consumed; the noise generated in the operation process can interfere with the ongoing examination, affect the attention and examination experience of students; in the tense environment of the examination room, frequent adjustment of the desk not only wastes time and effort, but also easily causes confusion and brings inconvenience to work. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a convenient adjustment hidden type storage desk to solve the problems in the above background.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of:

[0006] A convenient adjustment hidden type storage desk, including desktop board, storage box and four desk legs fixedly connected at the bottom of the desktop board, the side wall of the desk leg is provided with a track groove, the storage box is slidably connected with the four desk legs, the two sides of the storage box are symmetrically fixedly connected with a sliding block, the sliding block is rotatably connected with a pulley outside, and the pulley is in contact with the inner wall of the track groove; the bottom between every two desk legs is fixedly connected with a bottom frame, the bottom frame and the bottom of the desktop board are symmetrically fixedly connected with two side frames, the inside of the side frame is provided with a speed reduction assembly connected with the storage box, the speed reduction assembly is used for slowing down the sliding speed of the storage box, and the two sides of the storage box are provided with a positioning assembly, and the positioning assembly is used for fixing the storage box.

[0007] By setting the storage box capable of moving up and down, in daily use, the storage box is lifted to contact the bottom of the desktop panel, and the storage box is fixed by the positioning assembly, so that the daily taking and placing operation is facilitated; and in the examination, the storage box can be lowered to be "hidden", so that the storage box is lowered to the position close to the feet, so that the mouth of the storage box is pulled away from the eyes of the examinee without lifting the table, thereby reducing the cheating situation.

[0008] Further improvement of the technical scheme of the utility model lies in that: the speed reduction assembly comprises a side plate fixedly connected to the side wall of the storage box, a piston cylinder fixedly connected to one side of the side plate, a piston plate slidably connected between the inner wall of the piston cylinder, a flow pipe arranged on the piston cylinder, a sliding rod slidably connected to one side of the side plate, one end of the sliding rod fixedly connected to the piston plate, one end of the sliding rod away from the piston plate extending to the other side of the side plate and fixedly connected to a transmission frame, a through slot arranged on the transmission frame, a gear connected to the side plate close to the piston cylinder through a bearing and a rotating shaft, a rack fixedly connected between the desktop panel and the chassis, the rack and the gear being in meshing connection, a transmission shaft fixedly connected to one end of the bearing away from the gear, a reciprocating spiral groove arranged on the outer part of the transmission shaft, the part of the transmission shaft with the reciprocating spiral groove being slidably connected to the through slot, and a transmission ball fixedly connected to the inside of the through slot and slidably connected to the reciprocating spiral groove.

[0009] By setting the speed reduction assembly, in the process of lowering the storage box, the gear moves relative to the rack (along the extension direction of the rack), the gear rotates and drives the transmission shaft to rotate, the transmission frame makes reciprocating motion through the reciprocating spiral groove and the transmission ball, and the piston plate makes piston motion through the sliding rod, the piston cylinder is provided with the flow pipe for communication with the external environment, the piston plate makes piston motion and constantly communicates with the external environment through the flow pipe, the diameter of the flow pipe limits the speed of the air exchange, and therefore the piston plate motion is limited by the air pressure, so that the transmission frame motion is hindered, the rotation of the gear is limited, and the speed of the downward motion of the storage box is limited, thereby avoiding the damage of the storage box.

[0010] Further improvement of the technical scheme of the utility model lies in that: the bearing is set as a one-way bearing.

[0011] By setting the speed reduction assembly, in the process of lowering the storage box, the gear moves relative to the rack (along the extension direction of the rack), the gear rotates and drives the transmission shaft to rotate, the transmission frame makes reciprocating motion through the reciprocating spiral groove and the transmission ball, and the piston plate makes piston motion through the sliding rod, the piston cylinder is provided with the flow pipe for communication with the external environment, the piston plate makes piston motion and constantly communicates with the external environment through the flow pipe, the diameter of the flow pipe limits the speed of the air exchange, and therefore the piston plate motion is limited by the air pressure, so that the transmission frame motion is hindered, the rotation of the gear is limited, and the speed of the downward motion of the storage box is limited, thereby avoiding the damage of the storage box.

[0012] The further improvement of the utility model technical scheme lies in that: the piston cylinder is additionally provided with an air inlet pipe, check valves are arranged in the air inlet pipe and the flow pipe, the check valve in the air inlet pipe only unidirectionally guides from outside to the piston cylinder, the check valve in the flow pipe only unidirectionally guides from the piston cylinder to outside, and a groove is formed in the bottom of the desktop panel.

[0013] The above technical scheme makes the check valve in the air inlet pipe unidirectionally guide when the piston plate moves towards the mouth of the piston cylinder, and the check valve in the flow pipe unidirectionally blocks, so that external air enters the piston cylinder through the air inlet pipe; when the piston plate moves away from the mouth of the piston cylinder, the check valve in the air inlet pipe unidirectionally blocks, and the check valve in the flow pipe unidirectionally guides, so that external air is blown out through the flow pipe, so that the flow pipe continuously blows out gas, and the blowing position is directly above the storage box, thereby blowing away the dust on the storage box from the side.

[0014] The further improvement of the utility model technical scheme lies in that: the piston cylinder is additionally provided with an air inlet pipe, check valves are arranged in the air inlet pipe and the flow pipe, the check valve in the air inlet pipe only unidirectionally guide from outside to the piston cylinder, the check valve in the flow pipe only unidirectionally guide from the piston cylinder to outside, and a groove is formed in the bottom of the desktop panel.

[0015] The above technical scheme makes the check valve in the air inlet pipe unidirectionally guide when the piston plate moves towards the mouth of the piston cylinder, and the check valve in the flow pipe unidirectionally blocks, so that external air enters the piston cylinder through the air inlet pipe; when the piston plate moves away from the mouth of the piston cylinder, the check valve in the air inlet pipe unidirectionally blocks, and the check valve in the flow pipe unidirectionally guides, so that external air is blown out through the flow pipe, so that the flow pipe continuously blows out gas, and the blowing position is directly above the storage box, thereby blowing away the dust on the storage box from the side.

[0016] The further improvement of the utility model technical scheme lies in that: the piston cylinder is additionally provided with an air inlet pipe, check valves are arranged in the air inlet pipe and the flow pipe, the check valve in the air inlet pipe only unidirectionally guide from outside to the piston cylinder, the check valve in the flow pipe only unidirectionally guide from the piston cylinder to outside, and a groove is formed in the bottom of the desktop panel.

[0017] The above technical scheme makes the check valve in the air inlet pipe unidirectionally guide when the piston plate moves towards the mouth of the piston cylinder, and the check valve in the flow pipe unidirectionally blocks, so that external air enters the piston cylinder through the air inlet pipe; when the piston plate moves away from the mouth of the piston cylinder, the check valve in the air inlet pipe unidirectionally blocks, and the check valve in the flow pipe unidirectionally guides, so that external air is blown out through the flow pipe, so that the flow pipe continuously blows out gas, and the blowing position is directly above the storage box, thereby blowing away the dust on the storage box from the side.

[0018] The further improvement of the utility model technical scheme lies in that: the piston cylinder is additionally provided with an air inlet pipe, check valves are arranged in the air inlet pipe and the flow pipe, the check valve in the air inlet pipe only unidirectionally guide from outside to the piston cylinder, the check valve in the flow pipe only unidirectionally guide from the piston cylinder to outside, and a groove is formed in the bottom of the desktop panel.

[0019] The above technical scheme makes the check valve in the air inlet pipe unidirectionally guide when the piston plate moves towards the mouth of the piston cylinder, and the check valve in the flow pipe unidirectionally blocks, so that external air enters the piston cylinder through the air inlet pipe; when the piston plate moves away from the mouth of the piston cylinder, the check valve in the air inlet pipe unidirectionally blocks, and the check valve in the flow pipe unidirectionally guides, so that external air is blown out through the flow pipe, so that the flow pipe continuously blows out gas, and the blowing position is directly above the storage box, thereby blowing away the dust on the storage box from the side.

[0020] Due to the adoption of the above technical scheme, the present application has the following technical progress compared with the prior art:

[0021] 1. The utility model provides a kind of hidden storage desk of convenient adjustment, by being set up the storage box that can be up and down, in daily use, by lifting storage box to contact with the bottom of desktop panel, and using positioning assembly to fix storage box, to facilitate daily pick and place operation;And during examination, it can be realized by lowering storage box to " hide " that storage box is reduced to near foot position, so that the mouth of storage box can be pulled away from the distance of examinee's eyes without lifting the desk, to reduce the case of cheating.

[0022] 2. The utility model provides a kind of hidden storage desk of convenient adjustment, by setting up speed reduction component, during the lowering process of storage box, gear is relatively rack (along the extension direction of rack) activity, gear rotates along with it, and drives transmission shaft to rotate, by reciprocating spiral groove and transmission ball cooperation, make transmission frame do reciprocating motion, and piston plate is driven to do piston motion by slide bar, and piston cylinder is provided with flow pipe for communicating with external environment, above-mentioned piston plate does piston motion process will constantly communicate with external ventilation by flow pipe, by the diameter limit of flow pipe, ventilation speed is also limited, so that the above-mentioned piston plate activity will be limited by air pressure, to make transmission frame movement be hindered, and limit gear rotation, to further limit the speed of storage box downward activity, avoid that storage box is smashed. BRIEF DESCRIPTION OF DRAWINGS

[0023] The utility model will be further described below in connection with the drawings.

[0024] Figure 1 It is one of structure schematic diagram of the utility model daily use state (cover plate is closed);

[0025] Figure 2 It is the structure schematic diagram of the utility model daily use state two (cover plate is opened);

[0026] Figure 3 It is the structure schematic diagram of the utility model examination state (storage box is in the lower hidden state);

[0027] Figure 4 It is the structure schematic diagram of the utility model storage box adjustment process (side frame section view);

[0028] Figure 5 It is the internal structure schematic diagram of the utility model lock (wedge and lock shell sliding connection);

[0029] Figure 6 It is the section view structure schematic diagram of the utility model speed reduction component;

[0030] Figure 7For the utility model Figure 2 The enlarged view of A in the middle;

[0031] Figure 8 For the utility model Figure 4 The enlarged view of B in the middle.

[0032] In the figure: 1, desktop panel; 2, table leg; 3, bottom bracket; 4, storage box; 5, side bracket; 6, side plate; 7, piston cylinder; 8, flow pipe; 9, piston plate; 10, sliding rod; 11, transmission bracket; 12, transmission shaft; 13, reciprocating spiral groove; 14, transmission bead; 15, gear; 16, rack; 17, air inlet pipe; 18, spring latch; 19, slot; 20, inner groove; 21, cover plate; 22, lock catch; 23, track groove; 24, fixed plate; 25, crossbar; 26, rotating roller; 27, heightening frame; 28, hand carrying slot. DETAILED DESCRIPTION

[0033] The utility model will be further explained in detail in connection with examples below:

[0034] Example 1

[0035] As shown in Figure 1 , Figure 4 and Figure 8 , the utility model provides a kind of hidden storage desk of convenient adjustment, including desktop panel 1, storage box 4 and four fixedly connected in the bottom of desktop panel 1 table leg 2;The side wall of table leg 2 is all provided with track groove 23, and storage box 4 is all slidably connected with four table legs 2, and the two sides of storage box 4 are all fixedly connected with sliding block, and sliding block is rotatably connected with pulley outside, and pulley is in contact with the inner wall of track groove 23;The bottom between every two table legs 2 is all fixedly connected with bottom bracket 3, and bottom bracket 3 is fixedly connected with two side brackets 5 between the bottom of desktop panel 1, and the inside of side bracket 5 is all provided with the speed reduction assembly connected with storage box 4, and speed reduction assembly is used to slow down the sliding speed of storage box 4, and the two sides of storage box 4 are all provided with positioning assembly, and positioning assembly is used to fix storage box 4.

[0036] In the embodiment, by setting the storage box 4 that can be up and down, in daily use, by lifting the storage box 4 to contact with the bottom of the desktop panel 1, and using the positioning assembly to fix the storage box 4, the daily taking and placing operation is facilitated;And in the examination, the storage box 4 can be lowered to realize "hidden", so that the storage box 4 is lowered to the position close to the foot, so that the mouth of the storage box 4 can be pulled away from the eyes of the examinee without lifting the table, thereby reducing the cheating situation;

[0037] In the examination, by unlocking the positioning assembly, the storage box 4 is no longer fixed, and it slides downward under the action of gravity, and slowly slides in the process of sliding downward under the action of the speed reduction assembly, to avoid damage caused by rapid falling;

[0038] The reset is achieved by lifting the storage box 4 to contact with the table panel 1, and then fixing the storage box 4 through the positioning assembly.

[0039] As shown in Figure 4 , Figure 6 and Figure 8 , preferably, the speed-reducing assembly comprises a side plate 6 fixedly connected to the side wall of the storage box 4, one side of the side plate 6 is fixedly connected with a piston cylinder 7, a piston plate 9 is slidingly connected between the inner wall of the piston cylinder 7, a flow pipe 8 is arranged on the piston cylinder 7, a sliding rod 10 is slidingly connected to one side of the side plate 6, one end of the sliding rod 10 is fixedly connected with the piston plate 9, the end of the sliding rod 10 away from the piston plate 9 extends to the other side of the side plate 6 and is fixedly connected with a transmission frame 11, a through slot is formed in the transmission frame 11, a gear 15 is connected to the side of the side plate 6 close to the piston cylinder 7 through a bearing and a rotating shaft, a rack 16 is fixedly connected between the table panel 1 and the base frame 3, the rack 16 is engagedly connected with the gear 15, a transmission shaft 12 is fixedly connected to the end of the bearing away from the gear 15, a reciprocating spiral groove 13 is formed in the outer part of the transmission shaft 12, the part of the transmission shaft 12 with the reciprocating spiral groove 13 is slidingly connected with the through slot, and a transmission bead 14 is fixedly connected in the through slot and slidingly connected with the reciprocating spiral groove 13.

[0040] In this embodiment, by arranging the speed-reducing assembly, during the descending process of the storage box 4, the gear 15 moves relative to the rack 16 (in the extending direction of the rack 16), the gear 15 rotates accordingly, drives the transmission shaft 12 to rotate, and through the cooperation of the reciprocating spiral groove 13 and the transmission bead 14, the transmission frame 11 makes reciprocating motion, and the piston plate 9 makes piston motion through the sliding rod 10, and the piston cylinder 7 is provided with the flow pipe 8 for communication with the external environment. The piston plate 9 makes piston motion and constantly exchanges air with the external environment through the flow pipe 8, and the speed of air exchange is limited by the diameter of the flow pipe 8. Therefore, the piston plate 9 is limited by the air pressure, so that the transmission frame 11 is hindered, the rotation of the gear 15 is limited, and the speed of the descending of the storage box 4 is limited, thereby avoiding the damage of the storage box 4.

[0041] Preferably, the bearing is arranged as a one-way bearing.

[0042] In this embodiment, the rotating directions of the gear 15 are opposite during the ascending and descending processes of the storage box 4. When the storage box 4 descends, the gear 15 rotates and drives the transmission shaft 12 to rotate through the one-way bearing, so that the speed is limited. When the storage box 4 ascends, the rotating direction is opposite to that when the storage box 4 descends, and the transmission shaft 12 is not transmitted to the transmission shaft 12 through the one-way bearing, so that the speed is not affected, thereby avoiding the hindrance during the reset.

[0043] As shown in Figure 4 , Figure 6 and Figure 8As shown, preferably, the piston cylinder 7 is further provided with an air inlet pipe 17, the air inlet pipe 17 and the inner part of the flow pipe 8 are both provided with check valves, the check valve in the air inlet pipe 17 only unidirectionally guides from the outside to the piston cylinder 7, the check valve in the inner part of the flow pipe 8 only unidirectionally guides from the piston cylinder 7 to the outside, and the bottom of the tabletop 1 is provided with a recess.

[0044] In this embodiment, when the piston plate 9 moves towards the mouth of the piston cylinder 7, the check valve in the inner part of the air inlet pipe 17 is unblocked, while the check valve in the inner part of the flow pipe 8 is blocked, so that the external air enters the piston cylinder 7 through the air inlet pipe 17; when the piston plate 9 moves away from the mouth of the piston cylinder 7, the check valve in the inner part of the air inlet pipe 17 is blocked, while the check valve in the inner part of the flow pipe 8 is unblocked, so that the external air is blown out through the flow pipe 8, thereby making the flow pipe 8 continuously blow out the gas, and the blowing position is directly above the storage box 4, so as to blow the dust above the storage box 4 from the side.

[0045] As shown in Figure 1 , Figure 2 and Figure 8 , preferably, the side of the opening of the storage box 4 is provided with an inner groove 20, the bottom of the inner groove 20 is hingedly connected with a cover plate 21, the cover plate 21 is provided, away from the end connected with the inner groove 20, with a lock catch 22, the top of the inner groove 20 is provided with a clamping groove matched with the lock catch 22, the lock pin part of the lock catch 22 is a wedge, and the lock catch 22 can be unlocked by pressing the wedge.

[0046] The structure of the lock catch 22 is shown in Figure 5 , which is similar to the structure of the spring bolt 18, can be automatically clamped, and can be quickly unlocked.

[0047] In this embodiment, when the cover plate 21 is closed, the wedge on the lock catch 22 will automatically move under the cooperation of the inclined surface and the storage box 4 until the wedge is directly opposite the clamping groove, and the wedge is ejected to complete the locking. The above process is accompanied by the process of the storage box 4 descending, and the cover plate 21 will automatically close and complete the locking when it contacts the rotating roller 26, thereby avoiding the user's foot from entering the inside of the storage box 4 when the storage box 4 is in the foot position.

[0048] As shown in Figure 3 , Figure 4 and Figure 7 , preferably, the positioning assembly includes a spring bolt 18, the spring bolt 18 is fixedly connected with a wedge at the bolt end, the sidewall of the side frame 5 is provided with a slot 19, the wedge on the spring bolt 18 is matched with the slot 19, and the inclined surface of the wedge faces upward.

[0049] In the embodiment, by pulling the latch part on the spring latch 18, the spring is compressed, and the wedge is driven out of the slot 19, so that the storage box 4 is moved downward.

[0050] As shown in Figure 1 , Figure 3 and Figure 4 , preferably, the bottom of the storage box 4 is fixedly connected with a cushion frame 27, and the cushion frame 27 is provided with a hand carrying groove 28.

[0051] In the embodiment, when the storage box 4 is lowered to the lowest position, it does not directly contact the ground, but is cushioned by the cushion frame 27, and the hand carrying groove 28 is provided to provide a force point when lifting.

[0052] The working principle of the convenient adjustment hidden storage desk will be described below.

[0053] As shown in Figures 1-5 , during the examination, by pulling the latch part on the spring latch 18, the spring is compressed, and the wedge is driven out of the slot 19, so that the storage box 4 is no longer fixed and slides downward under the action of gravity. During the sliding process, the storage box 4 is slowly slid under the action of the slow-down assembly, so as to avoid damage caused by rapid falling. Specifically, during the lowering process of the storage box 4, the gear 15 moves relative to the rack 16 (in the extension direction of the rack 16), the gear 15 rotates accordingly, drives the transmission shaft 12 to rotate, and through the cooperation of the reciprocating spiral groove 13 and the transmission ball 14, the transmission frame 11 performs reciprocating motion, and the piston plate 9 performs piston motion through the slide rod 10. The piston cylinder 7 is provided with a flow pipe 8 for communication with the external environment. The piston plate 9 performs piston motion and continuously exchanges air with the external environment through the flow pipe 8. The diameter of the flow pipe 8 limits the air exchange speed, so that the piston plate 9 is limited by the air pressure, and the transmission frame 11 is hindered, and the rotation of the gear 15 is limited, and the speed of the downward movement of the storage box 4 is limited.

[0054] When resetting, the storage box 4 is lifted to contact the desktop panel 1, and in the process, the wedge on the spring latch 18 is compressed, so that the wedge moves to the side of the spring latch 18, until the wedge on the spring latch 18 is opposite to the slot 19, the wedge is ejected and fixed.

[0055] The above has made a detailed description of the utility model, but some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, without departing from the modification or improvement of the spirit of the utility model, it is within the protection scope of the utility model.

Claims

1. A kind of conveniently adjust hidden storage desk, including desktop panel (1), storage box (4) and four fixed connection in the bottom of desktop panel (1) desk leg (2);Its characterized in that: The side wall of the table leg (2) is provided with a track groove (23), the storage box (4) is slidably connected with the four table legs (2), both sides of the storage box (4) are symmetrically and fixedly connected with sliding blocks, the sliding blocks are rotatably connected with pulleys, and the pulleys are in contact with the inner walls of the track grooves (23); the bottom of every two table legs (2) is fixedly connected with a chassis (3), two side frames (5) are symmetrically and fixedly connected between the bottom of the table top plate (1) and the chassis (3), the inside of the side frame (5) is provided with a speed reduction assembly connected with the storage box (4), the speed reduction assembly is used for slowing down the sliding speed of the storage box (4), and both sides of the storage box (4) are provided with a positioning assembly, and the positioning assembly is used for fixing the storage box (4).

2. The adjustable concealed storage desk according to claim 1, wherein: The speed reduction assembly comprises a side plate (6) fixedly connected to the side wall of the storage box (4), a piston cylinder (7) fixedly connected to one side of the side plate (6), a piston plate (9) slidably connected between the inner walls of the piston cylinder (7), a flow pipe (8) arranged on the piston cylinder (7), a sliding rod (10) slidably connected to one side of the side plate (6), one end of the sliding rod (10) fixedly connected with the piston plate (9), the end of the sliding rod (10) away from the piston plate (9) extending to the other side of the side plate (6) and fixedly connected with a transmission frame (11), a through groove arranged on the transmission frame (11), a gear (15) connected to the side of the side plate (6) close to the piston cylinder (7) through a bearing and a rotating shaft, a rack (16) fixedly connected between the table top plate (1) and the chassis (3), the rack (16) and the gear (15) being in meshing connection, a transmission shaft (12) fixedly connected to the end of the bearing away from the gear (15), a reciprocating spiral groove (13) arranged on the outside of the transmission shaft (12), the part of the transmission shaft (12) with the reciprocating spiral groove (13) being slidably connected with the through groove, and a transmission bead (14) fixedly connected in the through groove and slidably connected with the reciprocating spiral groove (13).

3. The adjustable concealed storage desk according to claim 2, wherein: The bearing is a one-way bearing.

4. The adjustable concealed storage desk according to claim 3, wherein: The piston cylinder (7) is further provided with an air inlet pipe (17), the inside of the air inlet pipe (17) and the flow pipe (8) are provided with check valves, the check valve in the air inlet pipe (17) is only one-way conducted by the outer box piston cylinder (7), the check valve in the flow pipe (8) is only one-way conducted by the piston cylinder (7) to the outside, and the bottom of the table top plate (1) is provided with a groove.

5. The adjustable concealed storage desk according to claim 4, wherein: The side of the storage box (4) opening is provided with an inner groove (20), the bottom of the inner groove (20) is connected with a cover plate (21) through a hinge, the cover plate (21) is provided with a lock catch (22) away from the end connected with the inner groove (20), the top of the inner groove (20) is provided with a clamping groove matched with the lock catch (22), the lock pin part of the lock catch (22) is a wedge, the lock catch (22) can be unlocked by extruding the wedge on the lock catch (22), the two table legs (2) close to the user are fixedly connected with fixed plates (24), the two fixed plates (24) are fixedly connected with a horizontal rod (25) between the sides close to each other, the outer part of the horizontal rod (25) is rotatably connected with rotating rollers (26).

6. The adjustable concealed storage desk according to claim 5, wherein: The positioning assembly comprises a spring bolt (18), the bolt end of the spring bolt (18) is fixedly connected with a wedge, the sidewall of the side frame (5) is provided with a slot (19), the wedge on the spring bolt (18) is matched with the slot (19), and the inclined surface of the wedge faces upward.

7. The adjustable concealed storage desk according to claim 6, wherein: The bottom of the storage box (4) is fixedly connected with a heightening frame (27), the heightening frame (27) is provided with a hand carrying groove (28).

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