Student sitting posture correcting device

Abstract

A student sitting posture correcting device comprises a base plate, a reading plate and a correcting assembly, an inserting cavity is formed in the outer edge of the upper side of one side of the base plate, a fixing piece is arranged in the middle of the outer edge of the lower side of one side of the base plate, and a groove is formed in the middle of the outer edge of the upper side of the other side of the base plate; a correcting assembly is movably arranged on the outer edge of the upper side of one side of the base plate, a reading plate is movably arranged between the two side columns, elastic key assemblies are arranged in the middles of the two corresponding sides of the base, a plug is arranged on the lower side of the base, movable bolts are arranged on the two corresponding sides of the plug, and an iron sheet is arranged on the lower side of the plug. Due to the fact that the side shaft is arranged on one side of the reading plate of the correcting device, the posture of the reading plate can be adjusted by 180 degrees so as to meet the learning requirement, and the practical problem that the reading plate is difficult to adjust in one direction is solved.

Description

Technical Field

[0001] The utility model relates to the field of learning tools, in particular to a device for correcting students' sitting posture. Background Art

[0002] Students who sit at their desks for a long time are prone to develop bad sitting habits (leaning forward or lowering their heads), which can lead to problems such as spinal curvature, deformation, hunchback and myopia in adolescents.

[0003] Based on this, it is necessary to provide a sitting posture correction device to solve the problem of students' incorrect sitting posture. Summary of the Invention

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a student sitting posture correction device. The correction device can, firstly, adjust the inclination arc of the reading board so that students can read textbooks in a correct sitting posture, which is beneficial to vision health; secondly, it can adjust the inclination arc of the pad to provide an angle suitable for reading or writing, thereby reducing students' incorrect sitting postures such as leaning forward or lowering their heads.

[0005] The purpose of the present invention is achieved through the following technical solutions: including a pad, a reading board and a correction component, the pad, the reading board and the correction component are all made of ABS plastic material, an insertion cavity is provided on the upper outer edge of one side of the pad, a magnet is provided on the lower side of the insertion cavity, and holes are provided on the inner walls of both sides of the insertion cavity, a groove is provided in the middle of the upper outer edge of the other side of the pad, side columns with bolt holes are provided on the upper side of the pad located at both ends of the groove, sockets are provided at the two corners of the upper side of the other side of the pad, a fixing piece is provided in the middle of the lower outer edge of one side of the pad, and the fixing piece is provided. There are screw holes with internal threads on the lower sides of both ends of the fixed part, and the two screw holes are equipped with matching screws. Retractable tripods are provided at both corners of the lower side of the pad. A tool bin is provided on the upper outer edge of one end of the pad, and a flip cover is provided on the upper inner edge of one side of the tool bin. A correction component is movably provided on the upper outer edge of one side of the pad, a reading board is movably provided between the two side columns, and a side shaft is provided on one side of the reading board. Spring key components are provided in the center of the corresponding two sides of the base, a plug is provided on the lower side of the base, and movable bolts are provided on the corresponding two sides of the plug, and an iron sheet is provided on the lower side of the plug.

[0006] The spring key assembly includes a spring key, an extrusion rod, an extrusion spring and a movable bolt. One end of the extrusion rod is connected to the spring key, and an extrusion spring is provided on the outer circle of the extrusion rod. A limit plate is provided at the other end of the extrusion rod. A connecting rod is provided on the lower side of the limit plate. One end of the connecting rod is connected to the movable bolt, and a ring is provided on the outer circle of one end of the extrusion spring.

[0007] The beneficial effects of the present invention are that the stability of the correction component is effectively guaranteed by the embedded connection between the movable bolt and the jack, which solves the practical problem of unstable connection of the correction component due to human touch; by setting the side axis, the reading board can be rotated 180°, which solves the problem of difficult one-way adjustment of the reading board and improves reading efficiency; by setting the tripod, the height of one end of the pad can be flexibly adjusted, which solves the problem of restricted inclined writing and drawing and improves the efficiency of sitting posture correction. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the pad structure of the correction device of the present utility model.

[0009] Figure 2 This is a schematic diagram of the installation of the tripod of the correction device of the present invention.

[0010] Figure 3 It is an overall plan view of the correction device of the present invention.

[0011] Figure 4 Schematic diagram of the correction component of the correction device of the present invention.

[0012] Figure 5 Schematic diagram of the spring assembly of the correction device of the present invention.

[0013] Figure 6 This is a schematic diagram of the reading board structure of the correction device of the present utility model.

[0014] Figure 7 This is a schematic diagram of the overall installation of the correction device of the present invention.

[0015] 1. Pad; 2. Socket; 3. Groove; 4. Side column; 5. Tripod; 6. Limit assembly; 7. Fixing piece; 8. Screw hole; 9. Magnet; 10. Socket; 11. Flip cover; 12. Correction assembly; 13. Reading board; 14. Base; 15. Tripod A; 16. Chest guard; 17. Limit assembly A; 18. Plug; 19. Movable bolt; 20. Spring assembly; 21. Iron sheet; 22. Spring; 23. Extrusion rod; 24. Extrusion spring; 25. Limit plate; 26. Book support; 27. Side shaft; 28. Clamp; 29. ​​Book; 30. Desk DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] It should be noted that the terms "upper side", "lower side", "left", "outer side", "center part", "upper part", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0018] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "set," "connected," etc., should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in specific circumstances.

[0019] See also Figure 1 The length, width and thickness of the pad 1 are 47 cm, 37 cm and 1.2 cm respectively. A rectangular insertion cavity that can only accommodate a plug 18 is provided on the upper outer edge of one side of the pad 1 (on the left side), and a magnet sheet 9 is horizontally provided on the lower side of the insertion cavity. Sockets 10 are provided on the inner walls of both sides of the insertion cavity, and the lower side of the sockets 10 is as flat as the upper side of the magnet sheet 9; a semicircular groove 3 that can only accommodate one side of the side shaft 27 is provided in the center of the upper outer edge of the other side of the pad 1, and cylindrical side columns 4 are horizontally provided on the upper side of the pad 1 at both ends of the groove 3. A circular plug hole is provided in the center of one end of the two side columns 4, and square sockets 2 for inserting pens are provided at both corners of the upper side of the other side of the pad 1.

[0020] By providing the magnet sheet 9 , the pad 1 and the base 14 can be assembled by adsorption and can also be flexibly disassembled.

[0021] By providing the insertion hole 10 , the movable bolt 19 can be quickly inserted and connected, which is beneficial to the stability of the correction component 12 .

[0022] It should be noted that the midpoints of the two side columns 4 are opposite to the midpoint of the groove 3.

[0023] It should be noted that the insertion cavity is arranged to the left, away from the midpoint of the upper outer edge of one side of the pad 1.

[0024] The advantage of setting the insertion cavity to the left is that it can play a certain role in regulating and restraining the user's left hand.

[0025] It should be noted that the magnet piece 9 is a strong magnet with advantages such as strong attraction, stable performance and not easy to wear.

[0026] The function of the groove 3 is to regulate the side shaft 27 so that the side shaft 27 always moves in the groove 3, which is beneficial to the stability of the reading plate 13 when it is rotated and adjusted.

[0027] The function of the magnet sheet 9 is to stabilize the correction component 12 through strong adsorption, which is conducive to the correction of sitting posture.

[0028] Fixing part 7: The fixing part 7 is made of ABS plastic material and consists of a rectangular outer baffle and a support plate. The outer baffle is vertically arranged on the upper outer edge of one side of the support plate. Both ends of the support plate are provided with screw holes 8 with internal threads. The two screw holes 8 are equipped with matching screws. The upper side of the outer baffle is fixed to the center of the lower outer edge of one side of the pad 1 by hot melt technology.

[0029] It should be noted that the height inside the fixing member 7 is greater than the thickness of the panel of the general desk 30.

[0030] Function of the fixing member 7: used to fix the pad 1 on the desk 29, which is conducive to the correction of sitting posture.

[0031] Tripod 5: Both tripods 5 are composed of a sleeve and a telescopic tube. One side of the two sleeves is provided with a rectangular socket with an opening. The upper part of one side of the sleeve located in the two sockets is provided with a strip opening for one end of the card to enter and exit. Both of the sockets are provided with a limit assembly 6; the middle section of one side of the two telescopic tubes is horizontally recessed by 0.1 cm, and both sides of the recessed section of one side of the two telescopic tubes are evenly provided with scale lines for limiting. The upper parts of the two telescopic tubes are respectively embedded in a sleeve cavity and then clamped and fixed by the limit assembly 6. The height of the tripod 5 after extension is 15 cm, and the side lengths of the sleeve and the telescopic tube are 5 cm and 4 cm respectively.

[0032] By providing the limiting assembly 6 , the lifting and lowering of the tripod 5 can be effectively controlled, which is beneficial for adjusting the height of the pad 1 .

[0033] It should be noted that both the upper and lower sides of the sleeve are open, and the upper side of the telescopic tube is open.

[0034] Limiting assembly 6: The limiting assembly 6 includes a button, a pressure rod, a spring and a card. The two buttons are respectively arranged in a socket on one side of a sleeve. One end of the two pressure rods is fixed in a circular opening on the inner side of a button by hot melt adhesive. The outer circle of the two pressure rods is provided with a spring for resetting. The other end of the two pressure rods is fixed to the lower part of one side of a card by hot melt adhesive. Both of the two cards are 7-shaped structures, and the upper ends of the two cards are movably inserted into the opening on one side of a sleeve.

[0035] Please refer to the accompanying drawings of this embodiment, where there is an enlarged structural diagram of the limiting component 6 in the upper right corner of the pad 1.

[0036] It should be noted that one end of the pressure rod is hidden in the circular opening on the inside of the button, and the other end of the pressure rod is suspended in the socket.

[0037] It should be noted that the button does not contain a rectangular pressure plate. The button (extrusion head) is located in a circular opening at the bottom of the pressure plate. The circular opening at the bottom of one side of the pressure plate overlaps and is aligned with the circular opening on the corresponding sleeve.

[0038] Spring action: The pressure rod is quickly reset through elastic potential energy. At the same time, the upper part of the card that loses pressure will get stuck on the engraved line on one side of the telescopic tube, ultimately achieving the actual effect of limiting.

[0039] Working principle of the tripod 5 lifting and limiting component 6 I: After pressing the button of the limiting component 6, the button will push the pressure rod inward. When the pressure rod squeezes the lower part of the card, the upper end of the card will bend outward. At the same time as the upper part of the card is bent outward, the telescopic tube is freed from the constraint of the card. At this time, the tripod 5 can be flexibly adjusted in height.

[0040] Working principle II of the tripod 5 lifting and limiting component 6: When the user's finger leaves the button, the elastic potential energy of the spring will cause the pressure rod to quickly reset in the opposite direction. When the lower part of the card loses pressure, the upper part of the card will be pressed inward and stuck on the corresponding engraved line. At this time, the telescopic tube has been limited.

[0041] See also Figure 2 The outer edges of the sockets 2 at the two corners of the lower side of the pad 1 are provided with tripods 5, and the sockets 2 are connected to the inner cavity of the tripod 5; the upper outer edge of one head of the pad 1 is provided with a rectangular tool bin for storing various drawing tools, and the upper inner edge of one side of the tool bin is provided with a flip cover 11, and the upper outer edge of one side of the flip cover 11 is provided with a manually opened jaw.

[0042] It should be noted that, based on the consideration of convenient operation, the two limiting components 6 are both facing one end of the pad 1.

[0043] It should be noted that the flip cover 11 is movably connected to the upper outer edge of one side of the tool compartment by two hinges.

[0044] The biggest benefit of the tripod 5 is that it can adjust the inclination of the pad 1 by flexibly lifting and lowering, thereby providing an angle suitable for reading or writing, reducing students' incorrect sitting posture of leaning forward or lowering their heads; it can be used as a pen holder to store and organize various pens for study.

[0045] See also Figure 3 A correction component 12 is movably provided in the insertion cavity, and a reading board 13 is movably provided between the two side columns. The plugs at both ends of the reading board 13 are movably inserted into the plug holes at one end of a side column 4.

[0046] By providing the correction component 12, firstly, the left hand of the human body can be effectively regulated and restrained; secondly, the sitting posture of the students can be strictly standardized, which is beneficial to the normal development of the spine.

[0047] By arranging the reading board 13, students can read in a standard sitting posture, which is beneficial to their eyesight health.

[0048] It should be noted that the length and width of the pad 1 are greater than the length and width of A4 paper.

[0049] See also Figure 4 The correction component 12 includes a base 14, a tripod A15 and a chest baffle 16. The tripod A15 is vertically arranged in the center of the upper side of the base 14, and a chest baffle 16 is provided on the upper part of one side of the tripod A15.

[0050] Base: The base 14 is provided with a spring key assembly 20 in the center on both sides. A rectangular hollow plug 18 is provided on the outer edge of the empty opening on the lower side of the base 14. The inner cavity of the plug 18 is connected with the inner cavity of the base 14. The plug 18 is provided with a strip opening in the center on both sides. A rectangular movable bolt 19 is provided in each of the two openings. A stainless steel sheet 21 with the same specifications as the magnet sheet 9 is horizontally provided on the lower side of the plug 18.

[0051] By providing the movable bolt 19 , an integral connection can be formed between the plug 18 and the insertion cavity, which is beneficial to the stability of the correction component 12 .

[0052] By providing the iron sheet 21 , the strong suction force of the magnet sheet 9 can be effectively exerted, which is beneficial to the rapid installation and flexible disassembly of the correction component 12 .

[0053] It should be noted that the length of the base 14 is greater than the length of the plug 18 , and the width of the base 14 is less than the width of the plug 18 .

[0054] It should be noted that the length and width of the plug 18 = the length and width inside the insertion cavity.

[0055] The chest baffle 16 is composed of a backrest plate and a soft silicone pad. The silicone pad is arranged on one side of the backrest plate (facing the chest of the human body).

[0056] By providing the silicone pad, firstly, the thickness of the backrest can be increased, and the distance between the human chest and the chest baffle 16 can be reduced, which is conducive to smooth correction of sitting posture; secondly, the comfort of the human chest can be improved.

[0057] Tripod A15: The tripod A15 consists of an upper sleeve and an inner telescopic tube. A limit assembly A17 is provided on one side of the upper sleeve. The concave surface in the middle section of one side of the inner telescopic tube is evenly provided with scale lines for limiting. The lower part of the inner telescopic tube is embedded in the inner cavity of the upper sleeve and then clamped and fixed by the limit assembly 17.

[0058] The tripod A15 has a flexible lifting function. The structure and operation method of the tripod A15 are the same as those of the tripod 5. The upper sleeve is equivalent to the sleeve, the inner telescopic tube is equivalent to the telescopic tube, and the structure and operation method of the limit assembly A17 are the same as those of the limit assembly 6 (see Figure 1 ).

[0059] The biggest advantage of the A15 tripod is that the height can be flexibly adjusted by telescoping the inner telescopic tube to meet the actual needs of students of all ages and facilitate the smooth correction of sitting posture.

[0060] Working principle of limit assembly A17 I: When button A of limit assembly A17 is pressed, button A will push lever A inward. When lever A squeezes the lower part of card A, the upper end of card A will tilt outward. When the upper part of card A tilts outward, the inner telescopic tube will break away from the limit of card A. At this time, the user can flexibly adjust the height of tripod A15 (refer to Figure 1 The limiting component 6 structure in the figure).

[0061] Working principle II of limit assembly A17: When button A is released, the elastic potential energy of spring A will cause the pressure rod A to quickly reset. When the lower part of card A loses pressure, the upper part of card A will press inward and get stuck on the corresponding engraved line. At this time, the inner telescopic tube has been limited (refer to Figure 1 The limiting component 6 structure in the figure).

[0062] For the convenience of description and classification, each component of the limit assembly A17 is followed by A, such as button A, pressure rod A, card A and spring A, so as to distinguish them from the components on the limit assembly 6.

[0063] See also Figure 5 Since the two latch assemblies 20 have the same structure and operation mode, only one latch assembly 20 is described in detail in this embodiment.

[0064] The spring key assembly 20 is made of PV plastic material, and the spring key assembly 20 includes a spring key 22, an extrusion rod 23, an extrusion spring 24 and a movable bolt 19. One end of the extrusion rod 23 is connected to the spring key 22, and the outer circle of the extrusion rod 23 is provided with an extrusion spring 24 for rapid reset. A circular limit plate 25 is provided on the outer side of the other end of the extrusion rod 23, and a 7-shaped connecting rod is provided on the lower side of the limit plate 25. One end of the connecting rod is fixed to the center of the upper side of the rectangular movable bolt 19, and the outer circle of one end of the extrusion spring 24 is provided with a ring, and the ring is equipped with a suspension rod.

[0065] The function of the collar is to squeeze a section of the rear portion of the spring 24 in a regular manner, which is beneficial for the vertical fixing of the boom.

[0066] The function of the limiting plate 25 is to block and limit one end of the extrusion spring 24 .

[0067] The latch assembly 20 is installed (combined with Figure 4 ): 1. Install the spring key 22 movably in the empty opening on one side of the base 14; 2. Insert the edge of one end of the movable bolt 19 into the opening on one side of the plug 18; 3. Fix one end of the extrusion rod 23 to the inner side of the spring key 22; 4. The outer circle of one end of the extrusion spring 24 is fixed horizontally by a suspension rod to the upper side of the corresponding position in the base 14; 5. Use a connecting rod to fix the limit plate 25 to the movable bolt 19.

[0068] It should be noted that the lower side of the strip-shaped opening (the opening on one side of the plug 18 ) is flush with the lower side inside the plug 18 .

[0069] It should be noted that the extrusion rod 23 is provided in the corresponding base 14 , and the movable bolt 19 is movably provided on the lower side of the corresponding plug 18 .

[0070] In actual situation, the squeezing depth of the spring key 22 = the moving distance of the squeezing rod 23 = the moving distance of the movable bolt 19; when the plug 18 is fully inserted into the insertion cavity, the 0.3 cm section at one end of the movable bolt 19 is embedded in the corresponding socket 10.

[0071] Working principle I of the spring key assembly 20: When the spring key 22 is pressed inward, the extrusion rod 23 will compress the extrusion spring 24 inward. While the extrusion rod 23 moves, the connecting rod will pull the movable bolt 19 backward to a limited extent. At this time, the movable bolt 19 will exit the socket 10, and the user can pull out the correction assembly 12.

[0072] Working principle II of the spring key assembly 20: When the plug 18 is inserted into the socket cavity, the elastic potential energy of the extrusion spring 24 will prompt the extrusion rod 23 to push the spring key 22 outward. When the spring key 22 is reset, the connecting rod will pull the movable bolt 19 forward to a limited extent. At this time, one end of the movable bolt 19 has been embedded in the socket 10.

[0073] The biggest advantage of the spring key assembly 20 is that through elastic extrusion, the correction assembly 12 can be quickly installed on the upper side of the pad 1, and can also be flexibly removed when not needed; through the embedded connection of the movable bolt 19 and the socket 10, an integrated and firm connection is formed between the correction assembly 12 and the pad 1, which plays an important role in correcting sitting posture.

[0074] See also Figure 6The reading board 13 includes a book support plate 26, a side shaft 27 and a clamp 28. The length and width of the book support plate 26 are 32 cm and 22 cm respectively. The cylindrical side shaft 27 is arranged on one side of the book support plate 26. The center of the outer side of both ends of the side shaft 27 is provided with a cylindrical plug that matches the inner cavity of the plug hole. The middle section of the upper side of the book support plate 26 is provided with an arc groove for placing the spine (the binding part on one side of the book 29). The upper outer edges of both sides of the book support plate 26 are provided with U-shaped clamps 28. The clamps 28 are composed of a rectangular upper splint, a lower splint and a side plate. The two ends of the lower side of one side of the two upper splints are provided with silicone pressure blocks.

[0075] The functions of the side shaft 27 are: first, to improve the tightness between the groove 3 and the side column 4, which is beneficial to the stability of the reading board 13 when it is rotated and displaced; second, the posture of the reading board 13 can be adjusted by rotating the side shaft 27.

[0076] It should be noted that the radius of the side axis 27 is equal to the radius inside the groove 3.

[0077] It should be noted that the upper and lower clamping plates of the clamp 28 are always kept in a clamped state.

[0078] To install the reading plate 13: 1. Place the side shaft 27 on one side of the reading plate 13 into the groove 3. 2. Insert the plug on the outside of one end of the side shaft 27 into the plug hole on the outside of one end of the side column 4. 3. Insert the plug on the outside of the other end of the side shaft 27 into the plug hole on the end of the other side column 4. 4. Rotate the reading plate 13 to adjust the position.

[0079] Material and performance of the clamp 28: The clamp 28 is made of PC plastic. The PC plastic molecular chain contains high molecular polymers. The clamp 28 has the advantages of high strength, good elasticity, excellent toughness, high and low temperature resistance and no deformation.

[0080] The operating principle and effect of the clamp 28: After manually opening one side of the upper and lower clamps, clamp one side of the opened book 29; the clamp 28 achieves the actual effect of opening and closing through its own elasticity, and the pages of the book 29 will not leave any marks or wrinkles after being clamped.

[0081] See also Figure 7 This embodiment primarily explains the installation of the correction device, providing an understanding of its location and operating principles. Therefore, to ensure understanding, the accompanying drawings only depict the essential components, omitting the base 14, tripod A15, and chest plate 16.

[0082] Correction device installation: 1. Place the pad 1 horizontally on the upper side of the desk 30; 2. Put the fixing part 7 on the outer edge of one side of the corresponding desk 30 panel, and then tighten it from the bottom with a screw; 3. Adjust the height of the correction component 12 according to the height; 4. Adjust the inclination arc of the reading board 13, and then place the open book 29 on the reading board 13; 5. Use the clamp 28 to clamp the outer edges of both sides of the book 29.

[0083] The biggest advantage of this correction device is I: the correction component 12 can achieve the actual effect of quick installation and disassembly through strong magnetic attraction, and can be embedded and connected with the socket 10 through the movable bolt 19 to solve the actual problem of unstable connection of the correction component 12 due to human touch; by adjusting the inclination arc of the reading board 13, students can read the text in the correct sitting posture, which is beneficial to vision health; by adjusting the inclination arc of the pad 1, it provides an angle suitable for reading or writing, reducing the student's bad sitting posture of leaning forward or lowering the head.

Claims

1. A student sitting posture correction device, comprising a pad, a reading board and a correction component, characterized in that; A plug cavity is provided on the upper outer edge of one side of the pad, a groove is provided in the middle of the upper outer edge of the other side of the pad, side columns with bolt holes are provided on the upper side of the pad at both ends of the groove, and sockets are provided at the two corners of the upper side of the other side of the pad, a fixing part is provided in the middle of the lower outer edge of one side of the pad, screw holes with internal threads are provided on the lower sides of both ends of the fixing part, and the two screw holes are equipped with matching screws, and retractable tripods are provided at the two corners of the lower side of the pad, a tool bin is provided on the upper outer edge of one head of the pad, a flip cover is provided on the upper inner edge of one side of the tool bin, a correction component is movably provided on the upper outer edge of one side of the pad, a reading board is movably provided between the two side columns, spring key components are provided on the corresponding sides of the base, and a plug is provided on the lower side of the base.

2. The student sitting posture correction device according to claim 1, characterized in that: A magnet sheet is provided on the lower side of the inserting cavity.

3. The student sitting posture correction device according to claim 1, characterized in that: Insertion holes are provided on the inner walls of both sides of the inserting cavity.

4. The student sitting posture correction device according to claim 1, characterized in that: Movable bolts are provided at the center of the two corresponding sides of the plug.

5. The student sitting posture correction device according to claim 1, characterized in that: An iron sheet is provided on the lower side of the plug.

6. The student sitting posture correction device according to claim 1, characterized in that: The spring key assembly includes a spring key, an extrusion rod, an extrusion spring and a movable bolt. One end of the extrusion rod is connected to the spring key, an extrusion spring is provided on the outer circle of the extrusion rod, a limit plate is provided on the other end of the extrusion rod, a connecting rod is provided on the lower side of the limit plate, one end of the connecting rod is connected to the movable bolt, and a ring is provided on the outer circle of one end of the extrusion spring.

7. The student sitting posture correction device according to claim 1, characterized in that: One end of the reading plate is provided with a side shaft.

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