A student posture correction device

Abstract

This invention relates to the field of student posture correction, and more particularly to a student posture correction device, comprising a clamp, a bracket rotatably connected to the side wall of the clamp, a chest support plate provided on the side wall of the bracket, and a chin support plate provided at the top of the bracket; two L-shaped mounting brackets symmetrically and fixedly connected to both sides of the clamp, and a connecting rod assembly rotatably connected to the bottom end of the L-shaped mounting brackets; a first locking block slidably connected in a groove at the bottom end of the connecting rod assembly, and a first spring fixedly connected between the first locking block and the connecting rod assembly. This invention, by setting a connecting rod assembly with swing freedom, allows the chair to maintain effective chest support when moving back and forth, and also allows for adaptive adjustment of force through the compression and release of the first spring, avoiding support failure or excessive compression caused by accidental chair movement.

Description

Technical Field

[0001] This invention relates to the field of student posture correction, and more particularly to a student posture correction device. Background Technology

[0002] With the development of technology, the frequency of electronic product use has gradually increased, and people's dependence on electronic products has also deepened. Prolonged periods of looking down can have very serious consequences for the spine, especially for teenagers who are still developing. Looking down for extended periods while doing homework affects bone development, and the use of electronic products further extends this time, leading to severe hunchback and affecting the correct growth direction of bones. Currently, posture correction devices for students typically involve installing a chest support on the desk to support the chest while reading.

[0003] However, if the chair moves unexpectedly while the student is sitting and reading, causing the student to move away from or closer to the chest support, the chest support will not be able to support the student's chest if the chair moves away from the chest support, which may lead to failure of posture correction. If the chair moves closer to the chest support, the student's body will not have time to react, which may cause the student's chest to be excessively compressed by the chest support, causing discomfort.

[0004] Therefore, the present invention proposes a student posture correction device to solve the above problems. Summary of the Invention

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a student sitting posture correction device, comprising: a clamp, a bracket rotatably connected to the side wall of the clamp, a chest support plate provided on the side wall of the bracket, and a chin support plate provided at the top of the bracket; Two L-shaped mounting brackets are symmetrically and fixedly connected to both sides of the clamp, and a connecting rod assembly is rotatably connected to the bottom end of each L-shaped mounting bracket. A first locking block is slidably connected in the bottom groove of the connecting rod assembly, and a first spring is fixedly connected between the first locking block and the connecting rod assembly. The seat has snap-fit ​​shells fixedly connected to the side walls of the armrests on both sides, and the bottom of the snap-fit ​​shell has a snap-fit ​​groove that mates with the first snap-fit ​​block. A button is slidably connected in a snap-fit ​​groove, and a second spring is fixedly connected between the button and the snap-fit ​​groove.

[0006] Preferably, the connecting rod assembly includes: A rotating shell is rotatably connected to the bottom end of an L-shaped mounting bracket. A connecting bracket is slidably connected inside the rotating shell. A first snap-fit ​​block is slidably connected to a groove at the bottom end of the connecting bracket. A first spring is fixedly connected between the first snap-fit ​​block and the connecting bracket. The second snap-fit ​​block is slidably connected to the top of the connecting frame, and the bottom end of the second snap-fit ​​block is fixedly connected to the first rack plate. A third spring is fixedly connected between the first rack plate and the inner wall of the connecting frame. Tooth groove, the tooth groove being formed on the inner bottom surface of the end of the rotating shell; An extrusion plate, which is slidably connected within a snap-fit ​​housing; The pushing mechanism works in conjunction with the button. As the button moves upward, it drives the pushing mechanism to push the extrusion plate upward, thus canceling the extrusion effect on the second locking block.

[0007] Preferably, the actuating mechanism includes: The L-shaped drive plate is slidably connected to the outer wall of the snap-fit ​​shell, and the side wall of the L-shaped drive plate is provided with a first drive groove and a second drive groove. The first drive groove includes a horizontal groove and a first inclined groove, and the second drive groove includes a second inclined groove and a vertical groove; The first sliding pin is fixedly connected to the side wall of the extrusion plate, and the first sliding pin slides through the outer side wall of the snap-fit ​​shell and is slidably connected in the first drive groove. The second sliding pin is fixedly connected to the side wall of the button and slidably connected in the second drive groove.

[0008] Preferably, the seat includes a base, a backrest is slidably connected to the top surface of the base, a sliding shell is fixedly connected to the bottom end of the base, a U-shaped sliding frame is slidably connected inside the sliding shell, and the top end of the U-shaped sliding frame is fixedly connected to the backrest. A push component for adjusting the backrest position.

[0009] Preferably, the actuating component includes: Two second rack plates are symmetrically and fixedly connected to both sides of the bottom end of the U-shaped sliding frame; The first gear is rotatably connected to the bottom surface of the base, and the bottom end of the shaft of the first gear is fixedly connected to the second gear. The first gear meshes with the second rack plate, and the radius of the second gear is smaller than the radius of the first gear. Two folding push frames are slidably connected to the two handrail side walls respectively. A fourth spring is fixedly connected between the folding push frame and the handrail. A third rack plate is fixedly connected to the bottom end of the folding push frame, and the third rack plate meshes with a second gear. The end of the connecting frame passes through the snap-fit ​​shell and extends close to the side wall of the folded push frame.

[0010] Preferably, the end of the connecting frame is threaded with a push screw.

[0011] Preferably, the clamp includes an upper clamp and a lower clamp, the lower clamp is slidably connected to the bottom end of the upper clamp, and an adjusting screw is symmetrically rotatably connected to the bottom end of the lower clamp, the top end of the adjusting screw being threadedly connected to the upper clamp.

[0012] Preferably, the clamping surfaces of both the upper and lower clamps are fixedly connected with clamping pads.

[0013] Preferably, a chest support pad is fixedly connected to the side wall of the chest support plate, and a chin support pad is fixedly connected to the top of the chin support plate.

[0014] Preferably, the armrest sidewall array has several slots, and the folded push frame sidewall is threaded with a snap-fit ​​screw at the position corresponding to the slot.

[0015] Compared with the prior art, the present invention has the following beneficial effects: I. This invention, by setting up a connecting rod assembly with swing degrees of freedom, enables the chair to maintain effective chest support when moving back and forth, and also allows for adaptive adjustment of force through the compression and release of the first spring, thus avoiding support failure or excessive compression caused by accidental movement of the chair.

[0016] Second, by setting a button, when the student needs to leave, the button moves upward against the resistance of the second spring, and the top of the button directly pushes the first locking block out of the locking groove, releasing the connection between the device and the chair, realizing quick locking and one-button safe release of the table and chair connection, improving the convenience of use and emergency safety.

[0017] Third, this invention sets up an automatic backrest adjustment linkage mechanism. During the process of inserting the connecting frame into the snap-fit ​​shell, the gear and rack transmission is driven so that the backrest moves forward automatically with the seat connection and close to the user's back, providing lumbar and back support at the same time, thus enhancing the overall effectiveness and comfort of posture correction. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram showing the connection between the seat and the clamp of the present invention; Figure 4 This is a schematic diagram showing the connection between the seat and the snap-fit ​​housing in this invention; Figure 5 This is a schematic diagram showing the connection between the clamp and the L-shaped mounting bracket of the present invention; Figure 6 This is a cross-sectional view of the rotating shell, connecting frame, and snap-fit ​​shell in this invention; Figure 7 for Figure 6 Enlarged view at point B in the middle; Figure 8 This is a schematic diagram showing the connection between the rotating shell and the tooth groove in this invention; Figure 9 This is a schematic diagram showing the connection between the base, armrest, and socket in this invention.

[0019] In the diagram: 1. Table; 2. Upper clamp; 3. Lower clamp; 4. Clamping pad; 5. Adjusting screw; 6. Bracket; 7. Chest support plate; 701. Chest support pad; 8. Chin support plate; 801. Chin support pad; 9. L-shaped mounting bracket; 10. Rotating shell; 11. Connecting bracket; 12. First locking block; 13. First spring; 14. Second locking block; 15. First rack plate; 16. Third spring; 17. Tooth groove; 18. Seat; 18. Base; 1801. Backrest; 1802. Armrest; 1803. Socket 1 804, snap-fit ​​housing 19, snap-fit ​​groove 20, button 21, second sliding pin 22, second spring 23, pressing plate 24, first sliding pin 2401, L-shaped drive plate 25, first drive groove 2501, second drive groove 2502, sliding housing 26, U-shaped sliding frame 27, second rack plate 28, first gear 29, second gear 30, folding push frame 31, snap-fit ​​screw 32, fourth spring 33, third rack plate 34, push screw 35. Detailed Implementation

[0020] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0021] like Figures 1 to 9 The student posture correction device shown includes: The clamp has a bracket 6 rotatably connected to its side wall. The bracket 6 has a chest support plate 7 on its side wall and a chin support plate 8 on its top. Two L-shaped mounting brackets 9 are symmetrically fixedly connected to both sides of the clamp, and a connecting rod assembly is rotatably connected to the bottom end of the L-shaped mounting brackets 9; The first locking block 12 is slidably connected in the slide groove at the bottom of the connecting rod assembly, and a first spring 13 is fixedly connected between the first locking block 12 and the connecting rod assembly. Seat 18, and snap-fit ​​shells 19 are fixedly connected to the side walls of the armrests 1803 on both sides of the seat 18. The bottom end of the snap-fit ​​shell 19 is provided with a snap-fit ​​groove 20 that cooperates with the first snap-fit ​​block 12. Button 21 is slidably connected in the slot 20, and a second spring 23 is fixedly connected between button 21 and slot 20; The fixture includes an upper fixture 2 and a lower fixture 3. The lower fixture 3 is slidably connected to the bottom end of the upper fixture 2. An adjusting screw 5 is symmetrically rotatably connected to the bottom end of the lower fixture 3. The top end of the adjusting screw 5 is threadedly connected to the upper fixture 2. The clamping surfaces of both the upper clamp 2 and the lower clamp 3 are fixedly connected with clamping pads 4; Specifically, in existing technologies, if a student is reading while seated, and the chair moves unexpectedly, causing the student to move closer or further away from the chest support, the chest support may fail to provide adequate support if the chair moves away, potentially leading to posture correction failure. Conversely, if the chair moves closer to the chest support, the student's body may not have enough time to react, resulting in excessive pressure on the chest support and discomfort. This technical solution addresses these issues, and its specific operation is as follows: The device's clamp is held in place on the edge of the table 1. By rotating the two adjusting screws 5, the lower clamp 3 is driven to move relative to the upper clamp 2, thereby adapting to tabletops of different thicknesses. The clamping pads 4 (usually rubber) on the clamping surface of the clamp provide stable static friction to prevent the device from sliding and protect the tabletop. Manually adjust the bracket 6, which is rotatably connected to the side wall of the clamp, to move its chest support plate 7 and chin support plate 8 to the expected support position. The chest support plate 7 and chin support plate 8 are respectively provided with soft padding layers of chest support pad 701 and chin support pad 801 to improve comfort. Next, push the snap-fit ​​shell 19 fixed on the armrest 1803 of the seat 18 towards the end of the connecting rod assembly. Under the guidance of the inclined plane, the first snap-fit ​​block 12 is compressed back into the sliding groove and compresses the first spring 13. When aligned with the snap-fit ​​groove 20, the first spring 13 pushes the first snap-fit ​​block 12 to pop out and snap into the groove, realizing the quick connection between the clamp and the chair. If the chair moves backward for any reason (seat 18 moves away from table 1), the rotatable connection between the connecting rod assembly and the L-shaped mounting bracket 9 can provide a degree of freedom for horizontal swinging, thereby allowing the chair to move backward within a certain angle, avoiding excessive movement distance, causing the chest to lose contact with the chest support plate 7, resulting in failure of posture correction. At this time, the first spring 13 is released, its elastic force is reduced, and it will not generate excessive back thrust, thus allowing the body to lean forward naturally; If the chair moves forward (seat 18 moves closer to table 1), the aforementioned connecting rod assembly and the L-shaped mounting bracket 9 also provide the opposite degree of swing freedom; At the same time, the first snap block 12 will slide backward in the groove of the connecting rod assembly and continue to compress the first spring 13. The elastic force of the spring will be converted into a force that gently pulls the user's body away from the chest support, thereby avoiding excessive compression of the student's chest by the chest support board, which could lead to discomfort and danger. When it is time to leave, the student presses the button 21 located on the snap-fit ​​housing 19. The button 21 moves upward against the resistance of the second spring 23, and the top of the button 21 directly pushes the first snap-fit ​​block 12 out of the snap-fit ​​groove 20, thus disconnecting the device from the chair.

[0022] As a further embodiment of the present invention, the connecting rod assembly includes: Rotating shell 10 is rotatably connected to the bottom end of L-shaped mounting bracket 9. Connecting bracket 11 is slidably connected inside rotating shell 10. First snap-fit ​​block 12 is slidably connected to the bottom groove of connecting bracket 11. First spring 13 is fixedly connected between first snap-fit ​​block 12 and connecting bracket 11. The second latching block 14 is slidably connected to the top of the connecting frame 11. The bottom end of the second latching block 14 is fixedly connected to the first rack plate 15. The first rack plate 15 and the inner wall of the connecting frame 11 are fixedly connected to the third spring 16. Tooth groove 17, tooth groove 17 is formed on the inner bottom surface of the end of the rotating shell 10; The extrusion plate 24 is slidably connected within the snap-fit ​​housing 19. The pushing mechanism works in conjunction with the button 21. As the button 21 moves upward, it drives the pushing mechanism to push the pressing plate 24 upward, thus canceling the pressing effect on the second locking block 14. The driving organizations include: L-shaped drive plate 25 is slidably connected to the outer wall of snap-fit ​​shell 19. The side wall of L-shaped drive plate 25 is provided with a first drive groove 2501 and a second drive groove 2502. The first drive groove 2501 includes a horizontal groove and a first inclined groove, and the second drive groove 2502 includes a second inclined groove and a vertical groove. The first sliding pin 2401 is fixedly connected to the side wall of the extrusion plate 24. The first sliding pin 2401 passes through the outer side wall of the snap-fit ​​shell 19 and is slidably connected in the first drive groove 2501. The second sliding pin 22 is fixedly connected to the side wall of the button 21 and slidably connected in the second drive groove 2502. Specifically, users can manually pull out the connecting bracket 11 to slide it inside the rotating shell 10, thereby adjusting the effective length of the entire connecting rod assembly to accommodate tables and chairs with different spacing. When adjusted to the appropriate length, the second locking block 14 is inserted into the locking housing 19 and pressed under the seat 18 of the pressing plate 24, causing the second locking block 14 to move downward, causing the first rack plate 15 to move downward and engage with the tooth groove 17 on the inner bottom surface of the rotating housing 10, preventing accidental expansion and contraction due to force during use and ensuring the stability of the support distance. When the table 1 needs to be connected to the chair for departure, press button 21. Button 21 moves upward, causing the second sliding pin 22 to slide in the second drive groove 2502 of the L-shaped drive plate 25. Driven by the second inclined groove, the L-shaped drive plate 25 moves horizontally inward. When the L-shaped drive plate 25 moves horizontally, the first drive groove 2501 moves synchronously. The first sliding pin 2401, which is fixed to the side wall of the extrusion plate 24, was originally located in the horizontal groove section of the first drive groove 2501, and then entered the first inclined groove section. The first inclined groove reverses the horizontal movement of the L-shaped drive plate 25 into the vertical upward movement of the extrusion plate 24, thereby canceling the extrusion on the second snap-fit ​​block 14. Under the elastic seat 18 of the third spring 16, the first rack plate 15 is completely disengaged from the tooth groove 17, the length lock of the connecting frame 11 is released, and it can slide freely in the rotating shell 10.

[0023] As a further embodiment of the present invention, the seat 18 includes a base 1801, a backrest 1802 is slidably connected to the top surface of the base 1801, a sliding shell 26 is fixedly connected to the bottom end of the base 1801, a U-shaped sliding frame 27 is slidably connected inside the sliding shell 26, and the top end of the U-shaped sliding frame 27 is fixedly connected to the backrest 1802. A push component is used to adjust the position of the backrest 1802. The driving components include: Two second rack plates 28 are symmetrically and fixedly connected to both sides of the bottom end of the U-shaped sliding frame 27; The first gear 29 is rotatably connected to the bottom surface of the base 1801. The bottom end of the shaft of the first gear 29 is fixedly connected to the second gear 30. The first gear 29 meshes with the second rack plate 28. The radius of the second gear 30 is smaller than the radius of the first gear 29. Two folding push frames 31 are slidably connected to the side walls of two handrails 1803 respectively. A fourth spring 33 is fixedly connected between the folding push frame 31 and the handrail 1803. A third rack plate 34 is fixedly connected to the bottom end of the folding push frame 31. The third rack plate 34 meshes with the second gear 30. The end of the connecting frame 11 passes through the snap-fit ​​housing 19 and extends close to the side wall of the folded push frame 31; Specifically, during the process of inserting the connecting frame 11 into the snap-fit ​​housing 19, the end of the connecting frame 11 pushes and squeezes the folding push frame 31, causing the folding push frame 31 to move. The third rack plate 34 moves synchronously, and the third rack plate 34 drives the second gear 30 meshing with it to rotate. Since the second gear 30 is coaxially fixed with the first gear 29, the rotating first gear 29 drives the two second rack plates 28 meshing with it to move, thereby driving the U-shaped sliding frame 27 and the backrest 1802 fixed to it to move along the sliding shell 26 on the base 1801, so that the backrest 1802 is close to the user's back and provides back support.

[0024] As a further embodiment of the present invention, a push screw 35 is threadedly connected to the end of the connecting frame 11; by adjusting the length of the push screw 35, the final moving position of the folding push frame 31 is adjusted, thereby adjusting the moving position of the backrest 1802.

[0025] As a further embodiment of the present invention, the side wall array of the armrest 1803 has several slots 1804, and the side wall of the folding push frame 31 is threaded with a snap-fit ​​screw 32 at the position corresponding to the slot 1804; when reading is not required, in order to adapt the backrest 1802 to different people, the folding push frame 31 can be manually pushed to move, and then the snap-fit ​​screw 32 can be inserted into the corresponding slot 1804 for limiting.

[0026] The working principle of this invention is as follows: the clamp of the device is clamped to the edge of the table 1. By rotating the two adjusting screws 5, the lower clamp 3 is driven to move relative to the upper clamp 2, thereby adapting to tabletops of different thicknesses. The clamping pad 4 (usually rubber) on the clamping surface of the clamp can provide stable static friction to prevent the device from sliding and protect the tabletop. Manually adjust the bracket 6, which is rotatably connected to the side wall of the clamp, to move its chest support plate 7 and chin support plate 8 to the expected support position. The chest support plate 7 and chin support plate 8 are respectively provided with soft padding layers of chest support pad 701 and chin support pad 801 to improve comfort. Next, push the snap-fit ​​shell 19 fixed on the armrest 1803 of the seat 18 towards the end of the connecting rod assembly. Under the guidance of the inclined plane, the first snap-fit ​​block 12 is compressed back into the sliding groove and compresses the first spring 13. When aligned with the snap-fit ​​groove 20, the first spring 13 pushes the first snap-fit ​​block 12 to pop out and snap into the groove, realizing the quick connection between the clamp and the chair. If the chair moves backward (seat 18 moves away from table 1), the rotatable connection between the connecting rod assembly and the L-shaped mounting bracket 9 can provide a degree of freedom for horizontal swinging, thereby allowing the chair to move backward within a certain angle, avoiding excessive movement distance, which would cause the chest to lose contact with the chest support plate 7 and result in failure of posture correction. At this time, the first spring 13 is released, its elastic force is reduced, and it will not generate excessive back thrust, thus allowing the body to lean forward naturally; If the chair moves forward (seat 18 moves closer to table 1), the aforementioned connecting rod assembly and the L-shaped mounting bracket 9 also provide the opposite degree of swing freedom; At the same time, the first snap block 12 will slide backward in the groove of the connecting rod assembly and continue to compress the first spring 13. The elastic force of the spring will be converted into a force that gently pulls the user's body away from the chest support, thereby avoiding excessive compression of the student's chest by the chest support board, which could lead to discomfort and danger. When it is time to leave, the student presses the button 21 located on the snap-fit ​​housing 19. The button 21 moves upward against the resistance of the second spring 23, and the top of the button 21 directly pushes the first snap-fit ​​block 12 out of the snap-fit ​​groove 20, thus disconnecting the device from the chair.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A student posture correction device, characterized in that, include: The clamp has a bracket (6) rotatably connected to its side wall, a chest support plate (7) is provided on the side wall of the bracket (6), and a chin support plate (8) is provided at the top of the bracket (6). Two L-shaped mounting brackets (9) are symmetrically fixedly connected to both sides of the clamp, and a connecting rod assembly is rotatably connected to the bottom end of each L-shaped mounting bracket (9). The first locking block (12) is slidably connected in the bottom groove of the connecting rod assembly, and a first spring (13) is fixedly connected between the first locking block (12) and the connecting rod assembly. Seat (18), and snap-fit ​​shells (19) are fixedly connected to the side walls of the armrests (1803) on both sides of the seat (18). The bottom end of the snap-fit ​​shell (19) is provided with a snap-fit ​​groove (20) that cooperates with the first snap-fit ​​block (12). Button (21), which is slidably connected in the snap-fit ​​groove (20), and a second spring (23) is fixedly connected between the button (21) and the snap-fit ​​groove (20).

2. The student posture correction device according to claim 1, characterized in that, The connecting rod assembly includes: Rotating shell (10), the rotating shell (10) is rotatably connected to the bottom end of L-shaped mounting bracket (9), a connecting bracket (11) is slidably connected inside the rotating shell (10), the first snap-fit ​​block (12) is slidably connected in the bottom groove of the connecting bracket (11), and a first spring (13) is fixedly connected between the first snap-fit ​​block (12) and the connecting bracket (11). The second latching block (14) is slidably connected to the top of the connecting frame (11). The bottom end of the second latching block (14) is fixedly connected to the first rack plate (15). The first rack plate (15) is fixedly connected to the inner wall of the connecting frame (11) and the third spring (16). Tooth groove (17), the tooth groove (17) is formed on the inner bottom surface of the end of the rotating shell (10); The extrusion plate (24) is slidably connected within the snap-fit ​​housing (19); The pushing mechanism is linked with the button (21). When the button (21) moves upward, it drives the pushing mechanism to push the extrusion plate (24) upward, thereby canceling the extrusion effect on the second locking block (14).

3. The student posture correction device according to claim 2, characterized in that, The propulsion mechanism includes: L-shaped drive plate (25), which is slidably connected to the outer wall of snap-fit ​​shell (19), and the side wall of the L-shaped drive plate (25) is provided with a first drive groove (2501) and a second drive groove (2502). The first drive groove (2501) includes a horizontal groove and a first inclined groove, and the second drive groove (2502) includes a second inclined groove and a vertical groove; The first sliding pin (2401) is fixedly connected to the side wall of the extrusion plate (24). The first sliding pin (2401) passes through the outer side wall of the snap-fit ​​shell (19) and is slidably connected in the first drive groove (2501). The second sliding pin (22) is fixedly connected to the side wall of the button (21) and slidably connected in the second drive groove (2502).

4. A student posture correction device according to claim 2, characterized in that, The seat (18) includes a base (1801), a backrest (1802) is slidably connected to the top surface of the base (1801), a sliding shell (26) is fixedly connected to the bottom end of the base (1801), a U-shaped sliding frame (27) is slidably connected inside the sliding shell (26), and the top end of the U-shaped sliding frame (27) is fixedly connected to the backrest (1802). A push assembly for pushing and adjusting the position of the backrest (1802).

5. A student posture correction device according to claim 4, characterized in that, The actuating component includes: Two second rack plates (28) are symmetrically fixedly connected to both sides of the bottom end of the U-shaped sliding frame (27); The first gear (29) is rotatably connected to the bottom surface of the base (1801). The bottom end of the shaft of the first gear (29) is fixedly connected to the second gear (30). The first gear (29) meshes with the second rack plate (28). The radius of the second gear (30) is smaller than the radius of the first gear (29). Two folding push frames (31) are slidably connected to the side walls of two handrails (1803), and a fourth spring (33) is fixedly connected between the folding push frame (31) and the handrail (1803). A third rack plate (34) is fixedly connected to the bottom end of the folding push frame (31), and the third rack plate (34) meshes with the second gear (30). The end of the connecting frame (11) passes through the snap-fit ​​shell (19) and extends close to the side wall of the folded push frame (31).

6. A student posture correction device according to claim 5, characterized in that, The end of the connecting frame (11) is threaded with a push screw (35).

7. A student posture correction device according to claim 1, characterized in that, The clamp includes an upper clamp (2) and a lower clamp (3). The lower clamp (3) is slidably connected to the bottom end of the upper clamp (2). The bottom end of the lower clamp (3) is symmetrically rotatably connected to an adjusting screw (5). The top end of the adjusting screw (5) is threadedly connected to the upper clamp (2).

8. A student posture correction device according to claim 7, characterized in that, The clamping surfaces of the upper clamp (2) and the lower clamp (3) are both fixedly connected with clamping pads (4).

9. A student posture correction device according to claim 1, characterized in that, The chest support plate (7) is fixedly connected to the side wall of the chest support pad (701), and the chin support plate (8) is fixedly connected to the top of the chin support pad (801).

10. A student posture correction device according to claim 5, characterized in that, The side wall array of the handrail (1803) has several slots (1804), and the side wall of the folded push frame (31) is threaded with a snap-fit ​​screw (32) corresponding to the slot (1804).

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