School automatic adjustment noon break chair with turnover writing board

Abstract

The invention discloses a school automatic adjustment noon break chair with a turnover writing board, and relates to the technical field of noon break chairs. A school automatic adjustment noon break chair with a turnable writing board comprises two supporting chair legs, a leg supporting plate and a seat plate, the tops of the two supporting chair legs are fixedly connected with fixing frames respectively, through cooperation of second electric telescopic rods, a connecting plate, the fixing frames and other components, large-amplitude rotation adjustment of the leg supporting plate can be achieved, and meanwhile, the writing board can be turned over to be fixed to the seat plate. An auxiliary supporting plate in the auxiliary supporting structure can be further unfolded, the length and range of leg supporting are increased, the auxiliary supporting plate can be unfolded for use according to actual requirements, and when the student takes a noon break, the auxiliary supporting plate is rotated out of the containing groove and fixed to a proper position, so that the auxiliary supporting plate can be unfolded for use when the student is in a middle-height or high-height state. When the seat is switched to the midday break lying posture state, the legs can be completely and closely supported, and the stability of leg supporting is further enhanced.

Description

Technical Field

[0001] This invention relates to the field of nap chair technology, and in particular to an automatically adjustable nap chair for schools with a flip-up writing board. Background Technology

[0002] In the daily teaching setting of schools, lunch break is an important part of ensuring students' physical and mental health and improving their subsequent learning efficiency. Therefore, integrated chairs that combine lunch break and learning functions have become an important part of campus facilities.

[0003] Existing lunch break chairs typically have a fixed-length leg support structure or only allow for minor angle adjustments. Their support range is only sufficient for the leg placement needs of students of average height. For taller students, when switching to a reclining position for lunch break, the limited length and adjustment angle of the leg support board result in incomplete and inadequate leg support. Some students' lower legs may dangle or be forced to bend, making it difficult to achieve a comfortable lying position. This can also lead to muscle soreness and poor blood circulation due to uneven leg pressure, seriously affecting the quality of lunch break. Therefore, we propose an automatically adjustable school lunch break chair with a flip-up writing board. Summary of the Invention

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a school automatic adjustable nap chair with a flip-up writing board. This invention can solve the problem that the leg support structure of existing nap chairs is usually of fixed length or can only achieve small-angle fine adjustment. Its support range can only meet the leg placement needs of students of medium height. For taller students, when the chair is switched to the nap lying position, the length and adjustment angle of the leg support board are limited, resulting in the legs not being able to receive complete and close support. Some students' lower legs will be suspended or forced to bend, which not only makes it difficult to form a comfortable lying position, but may also cause muscle soreness and poor blood circulation due to uneven force on the legs.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a school automatic adjustable nap chair with a flip-up writing board, comprising: The chair includes two supporting chair legs, a leg support plate, and a seat plate. The top of each of the two supporting chair legs is fixedly connected to a fixed frame. The seat plate is fixedly connected to the top of the two fixed frames. A rotating groove is opened on one side of each of the two fixed frames. A connecting plate is rotatably connected to one end of each of the two fixed frames. The end of each connecting plate away from the corresponding fixed frame is rotatably connected to the bottom of the leg support plate. Electric telescopic rods are rotatably connected inside the two rotating grooves. The telescopic ends of the two electric telescopic rods are rotatably connected to the bottom of the leg support plate. An auxiliary support structure is provided on the leg support plate. A tabletop flipping structure is provided on the outside of the seat plate. The auxiliary support structure includes an auxiliary support plate and a rotating cylinder. A storage groove is provided on one side of the leg support plate, and multiple insertion holes are provided at the bottom of the leg support plate. The rotating cylinder is rotatably connected to the inside of the storage groove. Both ends of the rotating cylinder extend to the outside of the leg support plate. The auxiliary support plate is fixedly sleeved on the outer surface of the rotating cylinder and is located inside the storage groove.

[0006] Preferably, the auxiliary support structure further includes a rotating disk, a limiting slide plate is slidably connected inside the rotating cylinder, a connecting rod is fixedly connected to the bottom of the limiting slide plate, the end of the connecting rod away from the limiting slide plate extends slidably to the outside of the rotating cylinder and is fixedly connected to the rotating disk, two insert rods are fixedly connected to the side of the rotating disk near the leg support plate, the two insert rods are respectively inserted into the corresponding insert holes, and a spring is sleeved on the outer surface of the connecting rod.

[0007] Preferably, there are two auxiliary support structures, which are symmetrically arranged on the leg support plate.

[0008] Preferably, one end of the spring is fixedly connected to the limiting slide plate, and the end of the spring away from the limiting slide plate is fixedly connected to the inner wall of the rotating cylinder.

[0009] Preferably, the bottom of the seat panel is fixedly connected to two mounting frames, and a rotating plate is rotatably connected to the end of each mounting frame away from the seat panel. A backrest panel is bolted to one side of each rotating plate.

[0010] Preferably, a support base is fixedly connected to the bottom of the seat panel, and an electric telescopic rod is rotatably connected inside the support base. The telescopic end of the electric telescopic rod is rotatably connected to the bottom of the backrest panel.

[0011] Preferably, the desktop flipping structure includes two supporting legs, with fixed plates rotatably connected to the top of each of the two supporting legs. A writing table is fixedly connected to the top of the two fixed plates. A stepper motor is provided on one side of the writing table. The stepper motor is fixedly installed on the corresponding supporting leg, and the output end of the stepper motor rotatably extends into the interior of the supporting leg and is fixedly connected to the corresponding fixed plate.

[0012] Preferably, a handle is fixedly connected to the bottom of the rotating disk.

[0013] Preferably, the plurality of the sockets are arranged in a circular array on the leg support plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This school's automatically adjustable nap chair with a flip-up writing board, through the cooperation of the electric telescopic rod and connecting plate, fixed frame and other components, can achieve a large range of rotation and adjustment of the leg support plate. At the same time, the auxiliary support plate in the auxiliary support structure can be further extended, increasing the length and range of leg support. This allows the auxiliary support plate to be deployed and used according to actual needs. When students are napping, the auxiliary support plate can be rotated out of the storage slot and fixed in a suitable position. This ensures that whether the student is of medium or tall height, their legs can receive complete and close support when the chair is switched to the napping lying position, further enhancing the stability of the leg support.

[0015] 2. This school's automatically adjustable nap chair with a flip-up writing board allows the backrest to rotate to a suitable tilt angle around the connection point with the rotating board by adjusting the extension length of the electric telescopic rod. This provides personalized support for students' backs, allowing students of different body types and habits to find the most suitable backrest angle, effectively reducing back pressure, relieving back fatigue, and improving the comfort of the nap. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the rotating plate structure of the present invention; Figure 3 This is a schematic diagram of the supporting chair leg structure of the present invention; Figure 4 This is a schematic diagram of the auxiliary support plate structure of the present invention; Figure 5 This is a schematic cross-sectional view of the leg support plate of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 This is a schematic diagram of the writing desk structure of the present invention.

[0017] Reference numerals: 1. Writing desk; 2. Supporting table leg; 3. Supporting chair leg; 4. Leg support plate; 5. Seat board; 6. Backrest board; 7. Rotating plate; 8. Electric telescopic rod one; 9. Electric telescopic rod two; 10. Rotating disc; 11. Support base; 12. Mounting frame; 13. Fixing frame; 14. Insert rod; 15. Spring; 16. Limiting slide plate; 17. Auxiliary support plate; 18. Connecting plate; 19. Rotating groove; 20. Storage groove; 21. Stepper motor; 22. Fixing plate; 23. Insertion hole; 24. Connecting rod; 25. Rotating cylinder. Detailed Implementation

[0018] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0019] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 limiting this invention.

[0020] In the description of this invention, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0022] Please see Figure 1-7 This invention provides a technical solution: a school automatic adjustable nap chair with a flip-up writing board, comprising: The chair includes two supporting chair legs 3, a leg support plate 4, and a seat plate 5. The tops of the two supporting chair legs 3 are fixedly connected to fixed frames 13, and the seat plate 5 is fixedly connected to the tops of the two fixed frames 13. A rotating groove 19 is opened on one side of each of the two fixed frames 13. A connecting plate 18 is rotatably connected to one end of each of the two fixed frames 13. The ends of the two connecting plates 18 away from the corresponding fixed frames 13 are rotatably connected to the bottom of the leg support plate 4. Electric telescopic rods 9 are rotatably connected inside the two rotating grooves 19. The telescopic ends of the two electric telescopic rods 9 are rotatably connected to the bottom of the leg support plate 4. An auxiliary support structure is provided on the leg support plate 4, and a tabletop flipping structure is provided on the outside of the seat plate 5. The auxiliary support structure includes an auxiliary support plate 17 and a rotating cylinder 25. A storage groove 20 is provided on one side of the leg support plate 4, and multiple insertion holes 23 are provided at the bottom of the leg support plate 4. The rotating cylinder 25 is rotatably connected to the inside of the storage groove 20. Both ends of the rotating cylinder 25 extend to the outside of the leg support plate 4. The auxiliary support plate 17 is fixedly sleeved on the outer surface of the rotating cylinder 25 and is located inside the storage groove 20.

[0023] The auxiliary support structure also includes a rotating disk 10. A limiting slide plate 16 is slidably connected inside the rotating cylinder 25. A connecting rod 24 is fixedly connected to the bottom of the limiting slide plate 16. The end of the connecting rod 24 away from the limiting slide plate 16 extends slidably to the outside of the rotating cylinder 25 and is fixedly connected to the rotating disk 10. Two insert rods 14 are fixedly connected to the side of the rotating disk 10 near the leg support plate 4. The two insert rods 14 are respectively inserted into the corresponding insert holes 23. A spring 15 is sleeved on the outer surface of the connecting rod 24.

[0024] There are two auxiliary support structures, which are symmetrically arranged on the leg support plate 4. One end of the spring 15 is fixedly connected to the limiting slide plate 16, and the end of the spring 15 away from the limiting slide plate 16 is fixedly connected to the inner wall of the rotating cylinder 25.

[0025] Two mounting frames 12 are fixedly connected to the bottom of the seat plate 5. Rotating plates 7 are rotatably connected to the ends of the two mounting frames 12 away from the seat plate 5. Backrest plates 6 are bolted to one side of the two rotating plates 7. Support base 11 is fixedly connected to the bottom of the seat plate 5. Electric telescopic rod 8 is rotatably connected inside the support base 11. The telescopic end of the electric telescopic rod 8 is rotatably connected to the bottom of the backrest plate 6.

[0026] The desktop flip structure includes two supporting table legs 2, and the top of the two supporting table legs 2 is rotatably connected to a fixed plate 22. The top of the two fixed plates 22 is fixedly connected to a writing table 1. A stepper motor 21 is provided on one side of the writing table 1. The stepper motor 21 is fixedly installed on the corresponding supporting table leg 2. The output end of the stepper motor 21 rotatably extends into the interior of the supporting table leg 2 and is fixedly connected to the corresponding fixed plate 22.

[0027] A handle is fixedly connected to the bottom of the rotating disk 10, and multiple sockets 23 are arranged in a circular array on the leg support plate 4. Furthermore, when using this device, if the chair needs to be adjusted to the nap position, the two electric telescopic rods 9 are activated. The telescopic ends of the two electric telescopic rods 9 extend out. Since the two ends of the electric telescopic rods 9 are rotatably connected to the fixed frame 13 and the leg support plate 4 respectively, under the action of the electric telescopic rods 9, the leg support plate 4 rotates downward around the rotation connection point with the connecting plate 18. At the same time, the connecting plate 18 rotates in the rotation groove 19 of the fixed frame 13, thereby realizing the unfolding of the leg support plate 4, providing support for the legs and facilitating students' nap.

[0028] When the auxiliary support plate 17 is needed, pull down the handle at the bottom of the rotating disk 10. The rotating disk 10 drives the connecting rod 24 to move downward. The connecting rod 24 drives the limiting slide plate 16 to slide inside the rotating cylinder 25. At the same time, the spring 15 is compressed, causing the insertion rod 14 to disengage from the insertion hole 23. Then, rotate the rotating disk 10. The rotating disk 10 drives the rotating cylinder 25 to rotate through the connecting rod 24. The rotating cylinder 25 drives the auxiliary support plate 17 to rotate out of the storage slot 20. When the auxiliary support plate 17 rotates to the appropriate position, release the handle. Under the elastic force of the spring 15, the limiting slide plate 16 drives the rotating disk 10 to move upward through the connecting rod 24, so that the insertion rod 14 is inserted into the corresponding insertion hole 23, thereby fixing the position of the auxiliary support plate 17 and providing more stable support for the student's legs.

[0029] When the electric telescopic rod 8 is activated, its telescopic end retracts. Since both ends of the electric telescopic rod 8 are rotatably connected to the support base 11 and the backrest 6 respectively, the backrest 6 rotates backward around the rotation connection point with the rotating plate 7 under the action of the electric telescopic rod 8, causing the backrest 6 to tilt, providing comfortable support for the student's back and completing the adjustment of the student's lunch break state.

[0030] Start the stepper motor 21. The output of the stepper motor 21 drives the fixed plate 22 to rotate on the supporting table leg 2. The fixed plate 22 drives the writing table 1 to rotate to an inclined state.

[0031] When the writing desk 1 is needed, start the stepper motor 21 again to rotate it in the opposite direction and flip the writing desk 1 back to the horizontal position. After the lunch break, start the electric telescopic rod 29 to retract its telescopic end, and rotate the leg support plate 4 upward to return to its original position. Start the electric telescopic rod 18 to extend its telescopic end, and rotate the backrest 6 forward to return to the upright position. For the auxiliary support structure, pull the handle down to disengage the insertion rod 14 from the insertion hole 23, rotate the auxiliary support plate 17 into the storage slot 20, release the handle to insert the insertion rod 14 into the insertion hole 23 and fix it, and the chair returns to the normal seat state.

[0032] Through the cooperation of the electric telescopic rod 29 with the connecting plate 18, the fixing frame 13 and other components, the leg support plate 4 can be rotated and adjusted to a large extent. At the same time, the auxiliary support plate 17 in the auxiliary support structure can be further unfolded, increasing the length and range of the leg support. This allows the auxiliary support plate 17 to be unfolded and used according to actual needs. When students take a nap, the auxiliary support plate 17 can be rotated out of the storage slot 20 and fixed in a suitable position. This ensures that whether the student is of medium or tall height, their legs can receive complete and close support when the seat is switched to the nap reclining position, further enhancing the stability of the leg support.

[0033] By adjusting the extension length of the electric telescopic rod 8, the backrest 6 can be rotated backward around the rotation connection point with the rotating plate 7 to a suitable tilt angle, providing personalized support for students' backs. Students of different body types and habits can find the most suitable backrest angle for themselves, effectively reducing back pressure, relieving back fatigue, and improving the comfort of lunch break.

[0034] Structural Description: Writing Desk 1: Provides students with a flat surface for writing and studying. The desktop flip structure allows for switching between tilted and horizontal states to meet different usage needs; Supporting table legs 2: support the writing table 1, are rotatably connected to the fixed plate 22, and work with the stepper motor 21 to realize the state adjustment of the writing table 1; Chair legs 3: support the overall structure of the seat, with fixed frames 13 fixedly connected to the top to provide stable support for the seat; Leg support plate 4: It unfolds during lunch break to provide support for the legs, and has a storage slot 20 and a socket 23 for installing auxiliary support structures; Seat board 5: for students to sit on, with the bottom connected to the mounting frame 12 and support base 11 for mounting the backrest board 6 and the electric telescopic rod 8; Backrest 6: Provides support for students' backs, and is connected to seat board 5 via rotating plate 7. The tilt angle can be adjusted by the electric telescopic rod 8. Rotating plate 7: The backrest plate 6 is bolted on one side and rotatably connected to the mounting frame 12 on the other side to assist the rotation of the backrest plate 6; Electric telescopic rod 8: Both ends are rotatably connected to the support base 11 and the backrest 6 respectively; when the telescopic end retracts, the backrest 6 rotates backward and tilts; when the telescopic end extends, the backrest 6 rotates forward and returns to an upright position. Electric telescopic pole 29: Both ends are rotatably connected to the fixed frame 13 and the leg support plate 4 respectively. When the telescopic end extends, the leg support plate 4 rotates downward to unfold; when the telescopic end retracts, the leg support plate 4 rotates upward to return to its original position. Rotating disk 10: The bottom is fixedly connected to a handle for easy operation; the connecting rod 24 drives the limiting slide plate 16 to move, so that the insertion rod 14 can be inserted into or disengaged from the insertion hole 23, and the auxiliary support plate 17 can be fixed or unlocked. Support base 11: Fixed to the bottom of seat plate 5, internally rotatably connected to electric telescopic rod 8, providing an installation position for electric telescopic rod 8; Mounting frame 12: Fixed to the bottom of seat plate 5, with the end away from seat plate 5 rotatably connected to rotating plate 7 to assist in the installation of backrest plate 6; Fixed frame 13: It is fixed to the top of the two supporting chair legs 3 respectively, with a rotating groove 19 on one side and a connecting plate 18 rotatably connected to the other end for installing the electric telescopic rod 9 and connecting the leg support plate 4; Insert rod 14: Fixed on the side of the rotating disk 10 near the leg support plate 4, and inserted into the insertion hole 23 to fix the position of the auxiliary support plate 17; Spring 15: One end is fixedly connected to the limiting slide plate 16, and the other end is fixedly connected to the inner wall of the rotating cylinder 25. When the handle is released, it provides elastic force to insert the rod 14 into the insertion hole 23. Limiting slide plate 16: It is slidably connected inside the rotating cylinder 25, and the bottom is fixedly connected to the connecting rod 24, which drives the rotating disk 10 to move through the connecting rod 24; Auxiliary support plate 17: It is fixedly sleeved on the outer surface of the rotating cylinder 25 and located inside the storage groove 20. When unfolded, it provides more stable support for the student's legs. Connecting plate 18: One end is rotatably connected to the fixed frame 13, and the other end is rotatably connected to the bottom of the leg support plate 4 to assist the leg support plate 4 in rotating; Rotating groove 19: It is opened on one side of the fixed frame 13 and is rotatably connected to the electric telescopic rod 2 9, providing rotation space for the electric telescopic rod 2 9; Storage slot 20: Located on one side of the leg support plate 4, it is used to store the auxiliary support plate 17, saving space; Stepper motor 21: It is fixedly installed on the support table leg 2, and its output end extends into the support table leg 2 and is fixedly connected to the fixed plate 22, thereby driving the writing table 1 to rotate; Fixed plate 22: Rotatably connected to the top of the two supporting table legs 2; the top is fixedly connected to the writing table 1, which is driven to rotate by the stepper motor 21; Socket 23: Arranged in a circular array at the bottom of the leg support plate 4, it is inserted into the plug rod 14 and used to fix the auxiliary support plate 17 in different positions; Connecting rod 24: One end is fixedly connected to the limiting slide plate 16, and the other end slides to the outside of the rotating cylinder 25 and is fixedly connected to the rotating disk 10 to transmit the movement of the rotating disk 10; Rotating cylinder 25: Rotatably connected inside the storage slot 20; both ends extend rotatably to the outside of the leg support plate 4, and the limiting slide plate 16 is slidably connected inside, which is used to install the auxiliary support plate 17 and assist its rotation.

[0035] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A school chair with an automatically adjustable nap chair and a flip-up writing board, characterized in that, include: Two supporting chair legs (3), leg support plate (4) and seat plate (5) are provided. The top of the two supporting chair legs (3) is fixedly connected to a fixed frame (13). The seat plate (5) is fixedly connected to the top of the two fixed frames (13). A rotating groove (19) is opened on one side of each of the two fixed frames (13). A connecting plate (18) is rotatably connected to one end of each of the two fixed frames (13). Among them, the ends of the two connecting plates (18) away from the corresponding fixed frame (13) are rotatably connected to the bottom of the leg support plate (4), the interiors of the two rotating slots (19) are respectively rotatably connected to the electric telescopic rods (9), the telescopic ends of the two electric telescopic rods (9) are respectively rotatably connected to the bottom of the leg support plate (4), the leg support plate (4) is provided with an auxiliary support structure, and the exterior of the seat plate (5) is provided with a tabletop flipping structure; The auxiliary support structure includes an auxiliary support plate (17) and a rotating cylinder (25). A storage groove (20) is provided on one side of the leg support plate (4), and multiple insertion holes (23) are provided at the bottom of the leg support plate (4). The rotating cylinder (25) is rotatably connected to the inside of the storage groove (20). The two ends of the rotating cylinder (25) extend to the outside of the leg support plate (4), and the auxiliary support plate (17) is fixedly sleeved on the outer surface of the rotating cylinder (25). The auxiliary support plate (17) is located inside the storage groove (20).

2. The school's automatically adjustable nap chair with a flip-up writing board according to claim 1, characterized in that: The auxiliary support structure also includes a rotating disk (10), a limiting slide plate (16) is slidably connected inside the rotating cylinder (25), a connecting rod (24) is fixedly connected to the bottom of the limiting slide plate (16), and one end of the connecting rod (24) away from the limiting slide plate (16) slides to the outside of the rotating cylinder (25) and is fixedly connected to the rotating disk (10). Among them, the rotating disk (10) is fixedly connected to two plug rods (14) on the side near the leg support plate (4). The two plug rods (14) are respectively inserted into the corresponding plug holes (23), and the outer surface of the connecting rod (24) is fitted with a spring (15).

3. The school's automatically adjustable nap chair with a flip-up writing board according to claim 1, characterized in that: The number of auxiliary support structures is two, and the two auxiliary support structures are symmetrically arranged on the leg support plate (4).

4. A school automatic adjustable nap chair with a flip-up writing board according to claim 2, characterized in that: One end of the spring (15) is fixedly connected to the limiting slide plate (16), and the other end of the spring (15) away from the limiting slide plate (16) is fixedly connected to the inner wall of the rotating cylinder (25).

5. A school automatic adjustable nap chair with a flip-up writing board according to claim 1, characterized in that: The bottom of the seat plate (5) is fixedly connected to two mounting frames (12). The ends of the two mounting frames (12) away from the seat plate (5) are respectively rotatably connected to rotating plates (7). The backrest plates (6) are bolted to one side of the two rotating plates (7).

6. A school automatic adjustable nap chair with a flip-up writing board according to claim 5, characterized in that: The bottom of the seat plate (5) is fixedly connected to a support base (11), and an electric telescopic rod (8) is rotatably connected inside the support base (11). The telescopic end of the electric telescopic rod (8) is rotatably connected to the bottom of the backrest plate (6).

7. A school automatic adjustable nap chair with a flip-up writing board according to claim 1, characterized in that: The desktop flipping structure includes two supporting table legs (2), and the tops of the two supporting table legs (2) are respectively rotatably connected to fixed plates (22), and the tops of the two fixed plates (22) are fixedly connected to a writing table (1). Among them, a stepper motor (21) is provided on one side of the writing table (1). The stepper motor (21) is fixedly installed on the corresponding support table leg (2). The output end of the stepper motor (21) rotates and extends into the interior of the support table leg (2) and is fixedly connected to the corresponding fixing plate (22).

8. A school automatic adjustable nap chair with a flip-up writing board according to claim 1, characterized in that: A handle is fixedly connected to the bottom of the rotating disk (10).

9. A school automatic adjustable nap chair with a flip-up writing board according to claim 2, characterized in that: Multiple of the aforementioned jacks (23) are arranged in a circular array on the leg support plate (4).

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