阅读说明：本技术 一种预防近视的坐姿矫正装置 (Sitting posture correction device for preventing myopia ) 是由 韩钰 刘莹 王俊茹 张娜娜 赵亮 卢素华 党子硕 于 2020-12-29 设计创作，主要内容包括：本发明涉及一种预防近视的坐姿矫正装置,包括矫正学习桌,矫正学习桌包括桌面、俯仰转动设置在桌面的后端面中部的矫正机构以及控制器,桌面包括前部的书架区和中后部的书写区,所述书架区包括第一凹槽、俯仰铰接设于第一凹槽的后侧壁顶部的第一支撑板以及设于第一凹槽内第一电动推杆,矫正机构包括主杆、副杆和插杆,副杆的顶部连接横杆,横杆的两端设有扎带单元。本发明的一种预防近视的坐姿矫正装置,在俯仰方向以及竖直方向均设置一定的宽容度,在可接受的坐姿范围之内,给使用者一个身体活动的空间,更符合人体使用过程中的生理状态,使得孩子更容易接受,结构巧妙。(The invention relates to a sitting posture correction device for preventing myopia, which comprises a correction learning table, wherein the correction learning table comprises a table top, a correction mechanism and a controller, the correction mechanism is arranged in the middle of the rear end surface of the table top in a pitching rotating mode, the table top comprises a bookshelf area at the front part and a writing area at the middle and rear part, the bookshelf area comprises a first groove, a first supporting plate and a first electric push rod, the first supporting plate is hinged to the top of the rear side wall of the first groove in a pitching mode, the first electric push rod is arranged in the first groove, the correction mechanism comprises a main rod, an auxiliary rod and an inserting rod, the top of the auxiliary rod is connected with. According to the sitting posture correction device for preventing myopia, a certain latitude degree is set in the pitching direction and the vertical direction, a physical activity space is provided for a user within an acceptable sitting posture range, the physical activity space is more in line with the physiological state of a human body in the using process, so that children can accept the sitting posture correction device more easily, and the structure is ingenious.)

1. The utility model provides a position of sitting orthotic devices of prevention myopia, is including correcting study table, its characterized in that: the correction learning table comprises a table top, a correction mechanism and a controller, wherein the correction mechanism and the controller are arranged in the middle of the rear end face of the table top in a pitching rotating mode, the table top comprises a front bookshelf area and a middle and rear writing area, the bookshelf area comprises a first groove, a first supporting plate and a first electric push rod, the first supporting plate is arranged at the top of the rear side wall of the first groove in a pitching hinged mode, the first electric push rod is arranged in the first groove, the top end of the first electric push rod is hinged to the bottom of the first supporting plate, the bottom end of the first electric push rod is hinged to the bottom of the first groove, the correction mechanism comprises a main rod, an auxiliary rod and an inserting rod, a blind hole extending along the axis is formed in the upper end of the main rod, a first pressure spring is arranged at the bottom of the blind hole, the auxiliary rod is inserted into the blind hole and is arranged in a pressing mode with the first pressure spring, the, have the location on the inserted bar between vice pole and the blind hole bottom and keep off the edge, the location keeps off the external diameter on edge and is less than the spring internal diameter, the location keep off be equipped with on the upper surface on edge be used for with vice pole bottom terminal surface roof pressure complex pressure sensor, the desktop rear end is equipped with the jack that extends along the fore-and-aft direction, just to setting up a set of light detecting element on the upper and lower inner wall of jack, slip grafting in the jack sets up an elastic light baffle, the rear end of light baffle is connected on the mobile jib, be equipped with on the light baffle and lean forward the through-hole that supplies to detect light and pass when surpassing the settlement position at the mobile jib, pressure sensor passes through the wire and is connected with the controller sampling in the desktop, light detecting element is connected with.

2. A sitting posture correcting device for preventing myopia according to claim 1, wherein: the cross rod is provided with a through hole at a position corresponding to the through hole of the auxiliary rod, the top of the inserted rod is provided with a jacking part which is made of flexible plastic materials or rubber materials and has a semicircular, semi-elliptical or trapezoidal axial cross section, and the distance from the jacking part to the upper end of the through hole is smaller than the distance from the bottom of the auxiliary rod to the pressure sensor before use.

3. A sitting posture correction device for preventing myopia as claimed in claim 2, wherein: the corresponding positions of the rear end surfaces of the main rod and the table top are provided with spring jacks, and two ends of the second pressure spring are respectively inserted and fixed in the corresponding spring jacks.

4. A sitting posture correction device for preventing myopia as claimed in claim 3, wherein: the front side of mobile jib still is equipped with the couple, and the rear end of desktop is equipped with along the pivot of horizontal extension and the locating plate that sets up with pivot an organic whole, is equipped with the round locating hole on the locating plate, sets up round pin axle jack with the locating hole just right position on the horizontal side of desktop, and the one end hook of location rope is hung on the couple and the other end winding is fixed in the pivot.

5. A sitting posture correction device for preventing myopia according to claim 4, wherein: writing the district and including second recess, every single move articulated locate the second backup pad at the back lateral wall top of second recess and locate second electric putter in the second recess, second electric putter's top articulates the bottom at the second backup pad, and second electric putter's bottom articulates the bottom at the second recess, and the controller is arranged in the second recess, controller and second electric putter control connection.

6. A sitting posture correction device for preventing myopia as claimed in claim 5, wherein: the main rod is of a split structure and comprises an upper section with an H-shaped axial cross section above and a lower section with a convex plug below, the lower end of the lower section is hinged to the middle of the rear end face of the desktop in a pitching rotating mode, the lower portion of the upper section is provided with a threaded hole along the radial direction, and a set screw is screwed in the threaded hole.

7. A sitting posture correction device for preventing myopia as claimed in claim 6, wherein: the binding belt unit is a plastic binding belt or a cloth belt with two ends detachably fixed at two ends of the cross rod, or two plastic binding belts or cloth belts with two ends fixed at two ends of the cross rod, and the two binding belts or the two cloth belts are bound together or detachably inserted together through the insertion lock catch.

8. A sitting posture correction device for preventing myopia as claimed in claim 7, wherein: the front groove wall of the second groove is an arc surface matched with the second support plate in the rotating process.

9. A sitting posture correction device for preventing myopia as claimed in claim 8, wherein: still include the seat, the back of the chair front surface of seat is equipped with the tube-shape bounding wall, the apron is established to the slip grafting lid on the tube-shape bounding wall, be equipped with a plurality of pressure springs between apron and the back of the chair front surface, set firmly a plurality of plastics or rubber ejector pin on the back of the chair front surface in the tube-shape bounding wall, the ejector pin has axial cross-section and is the semicircle, half oval or trapezoidal roof pressure end, ejector pin length is good at the bounding wall horizontal width, and have the clearance between roof pressure end and the apron of using preceding ejector pin, the position just right with the ejector pin on the apron is equipped with a plurality of round holes that supply the ejector pin to pass, the distance of using the front shroud to the back of the chair.

10. A sitting posture correction device for preventing myopia according to any one of claims 1 to 9, wherein: the light detection unit comprises a group of opposite-emitting sensors or comprises an LED lamp arranged on the upper wall of the jack and a light sensor arranged right below the LED lamp.

Technical Field

The invention relates to the field of correction instruments, in particular to a sitting posture correction device for preventing myopia.

Background

Along with the increase of operation, the extension of training study time, myopia group is the more and more low age, under this background, the position of sitting has correctly become the most important ring of prevention myopia, appear many correction study posture study tables on the market down, some directness set up kicking block or forked form support before the desktop, direct roof pressure or support, some directness are binded child fixedly, some set up acousto-optic switch before the desk and pass through sound, light reminds, some when the user presses the desktop, the desktop sinks with adaptation child's eyes and desktop distance, technical staff investigate and discover that most correction table effect is all limited, discover the not good several reasons of result of use after the analysis: firstly, when a person learns, the body of the person cannot be stiff and motionless, the person cannot always keep a standard posture that a chest is far away from a desk and a fist is far away from a desktop, after a standard sitting posture is set for a child, the child is limited in a binding mode or a hard top mode, the child can resist very much, the child in use instead uses the mode as a leaning or hanging mode to enable waist and back muscles to be loose completely, the waist and back muscles are in a lazy state, in addition, the scheme of alarming once the child moves, such as the scheme with the application number of ZL202020043933.X, can frequently alarm in use, causes great trouble to the child, the child is unwilling to use, the scheme of alarming once the child is not in contact, the scheme of alarming is adopted, the use has the limit, such as the light has little effect in daytime, the sound is easy to adapt, the forcible force is not enough, and the child with weak self-control can continue reading and writing, many children do not have a call after adaptation and the corrective effect is greatly compromised. The second, people's position of sitting is not correct mainly has three kinds of circumstances, one kind is bending the waist and lying prone forward, one kind is straight the waist and lies prone forward, another kind is lazy mode of stealing is that back of the body muscle relaxes, the waist is bent backward and the head and shoulder is vertical toward descending, and current correction table or orthotic devices, the function is more single, often can only be to bending the waist and lie prone forward or straight the waist and lie prone forward and have the restraint effect, the mode to the equal effective fruit of two kinds of circumstances is just less common, to three kinds of circumstances homoenergetic carry out the restraint not discover yet. When the child studying desk is pressed on the desk top, the desk top sinks to adapt to the distance between the eyes of the child and the desk top, for example, a studying desk with the publication number of CN 111789383A, the structure is very complicated, and the spring-restrained desk top is continuously trembled in use and lacks use value.

Therefore, it is desirable to design a sitting posture correction device which is easy to be accepted by children and has a certain forced effect, and particularly, the sitting posture correction device can effectively restrain three kinds of problems.

Disclosure of Invention

In order to solve the technical problems, the invention aims to provide a sitting posture correction device for preventing myopia.

The purpose of the invention is mainly three: firstly, in an acceptable range, a physical activity space is provided for a user, the physical activity space is more in accordance with the physiological state of the user in the using process of the human body, so that children can easily accept the physical activity space, and the interference to the children in the activity space is reduced as much as possible; secondly, certain obligation is provided, and the problem of poor effect caused by adaptation of the children to acousto-optic reminding in the prior art is solved; and thirdly, the correcting device can effectively restrain three problems of sitting postures.

The technical scheme of the invention is as follows: a sitting posture correction device for preventing myopia comprises a correction learning table, wherein the correction learning table comprises a table top, a correction mechanism and a controller, the correction mechanism is arranged in the middle of the rear end face of the table top in a pitching rotating mode, the table top comprises a front bookshelf area and a middle and rear writing area, the bookshelf area comprises a first groove, a first supporting plate and a first electric push rod, the pitching supporting plate is hinged to the top of the rear side wall of the first groove, the first electric push rod is arranged in the first groove, the top end of the first electric push rod is hinged to the bottom of the first supporting plate, the bottom end of the first electric push rod is hinged to the bottom of the first groove, the correction mechanism comprises a main rod, an auxiliary rod and an inserting rod, a blind hole extending along the axis is formed in the upper end of the main rod, a first pressure spring is arranged at the bottom of the blind hole, the auxiliary rod is inserted into the blind hole and is arranged in a jacking mode with, the inserted bar is pegged graft in the through-hole of first pressure spring and auxiliary rod, it keeps off the edge to have the location on the inserted bar between auxiliary rod and the blind hole bottom, the location keeps off the external diameter on edge and is less than the spring internal diameter, the location is kept off and is equipped with on the upper surface on edge and is used for with auxiliary rod bottom terminal surface roof pressure complex pressure sensor, the desktop rear end is equipped with the jack that extends along the fore-and-aft direction, just on the upper and lower inner wall of jack to setting up a set of light detection unit, slip grafting sets up an elastic light baffle in the jack, the rear end of light baffle is connected on the mobile jib, be equipped with on the light baffle and supply the through-hole that detects light and pass when the mobile jib slopes forward and surpass the settlement position, pressure sensor passes through the wire and is connected with the controller sampling in.

Preferably, the cross rod is provided with a through hole at a position corresponding to the through hole of the auxiliary rod, the top of the inserted link is provided with a pressing part which is made of flexible plastic material or rubber material and has a semicircular, semi-elliptical or trapezoidal axial section, and the distance from the pressing part to the upper end of the through hole is smaller than the distance from the bottom of the auxiliary rod to the pressure sensor before use.

Preferably, spring insertion holes are formed in the positions, corresponding to the rear end faces of the main rod and the table top, of the main rod, and two ends of the second pressure spring are respectively inserted and fixed in the corresponding spring insertion holes.

Preferably, the front side of mobile jib still is equipped with the couple, and the rear end of desktop is equipped with along the pivot of horizontal extension and the locating plate that sets up with pivot an organic whole, is equipped with the round locating hole on the locating plate, and the position just right with the locating hole on the horizontal side of desktop sets up round pin axle jack, and the hook of location rope one end is hung on the couple and the other end winding is fixed in the pivot.

Preferably, the writing area comprises a second groove, a second support plate hinged to the top of the rear side wall of the second groove in a pitching mode and a second electric push rod arranged in the second groove, the top end of the second electric push rod is hinged to the bottom of the second support plate, the bottom end of the second electric push rod is hinged to the bottom of the second groove, the controller is located in the second groove, and the controller is in control connection with the second electric push rod.

Preferably, the main rod is of a split structure and comprises an upper section with an H-shaped axial cross section above and a lower section with a convex plug below, the lower end of the lower section is hinged to the middle of the rear end face of the desktop in a pitching rotating mode, the lower portion of the upper section is provided with a threaded hole along the radial direction, and a set screw is screwed in the threaded hole.

Preferably, the binding belt unit is a plastic binding belt or a cloth belt with two ends detachably fixed at two ends of the cross rod, or two plastic binding belts or cloth belts with two ends fixed at two ends of the cross rod, and the two binding belts or the two cloth belts are bound together or detachably inserted together through the insertion lock catch.

Preferably, the front groove wall of the second groove is an arc surface matched with the second support plate in the rotating process.

Preferably, still include the seat, the back of the chair front surface of seat is equipped with the tube-shape bounding wall, the apron is established to the slip grafting lid on the tube-shape bounding wall, be equipped with a plurality of pressure springs between apron and the back of the chair front surface, set firmly a plurality of plastics or rubber ejector pins on the back of the chair front surface in the tube-shape bounding wall, the ejector pin has axial cross-section and is the semicircle, half oval or trapezoidal roof pressure end, ejector pin length is good at the bounding wall horizontal width, and have the clearance between the roof pressure end that uses the preceding ejector pin and the apron, the position just right with the ejector pin on the apron is equipped with a plurality of round holes that supply the ejector pin to pass, the distance that uses the front shroud to the back of the.

Preferably, the light detection unit includes a set of opposite-emitting sensors, or includes an LED lamp disposed on the upper wall of the jack and a light sensor disposed right below the LED lamp.

The sitting posture correction device for preventing myopia is characterized in that when the sitting posture correction device is used, a user is firstly made at a desk, the sitting posture correction device is adjusted to be in a standard sitting posture, then a binding belt unit on a cross rod is used for binding a body, the binding part is particularly arranged on the chest and the oxter, when the body is inclined forwards along with the waist during normal reading, a main rod rotates forwards along with the main rod, the main rod can drive a light baffle to move forwards in a jack, when the binding part exceeds a set position, a light signal is received by a light detection unit through a through hole of the light baffle and is transmitted to a controller, the controller controls a first electric push rod to contract, the front end of a first support plate is pulled into a first groove, so that the first support plate forms an inclined plane with a low front part and a high back part, a book is low front part and high back part and cannot be read continuously, the user is forced to return to a correct posture, until the controller receives a signal that the light of the light detection unit is blocked, the controller controls the first electric push rod to reset the first supporting plate; when the waist and back muscles of a user unconsciously relax, the waist bends backwards and the head and the shoulders vertically descend, the body drives the auxiliary rod to compress the first pressure spring in the blind hole through the binding belt unit to move downwards, when the range exceeds a set range, the end face of the bottom end of the auxiliary rod presses the pressure sensor, the pressure sensor transmits a signal to the controller, and the controller also controls the first electric push rod to perform the action process; bend to lie prone forward when the user, not only mobile jib forward rotates, vice pole can the downstream moreover, and the controller receives the first electric putter shrink of arbitrary signal equal control, draws in the front end of first backup pad in the first recess, just can control first electric putter and carry out the action that resets and reset until two signals all disappear. Certain latitude is set in the pitching direction and the vertical direction, so that a physical activity space is provided for a user within an acceptable sitting posture range, the physical state of the user in the using process of the user is more met, the child can accept the sitting posture, and the structure is ingenious.

Further, when pressure sensor is arrived to vice pole bottom, the roof pressure portion of inserted bar can pass perforation roof pressure chest, wears out length through setting up roof pressure portion material and the biggest, under the prerequisite of guaranteeing safety, lets the user produce uncomfortable and feels, prevents that the user from regard as a helper that supports the health with the horizontal pole and through lying prone lazily on the horizontal pole.

Further, the rear end face of mobile jib and desktop corresponds the department and all is equipped with spring jack, the both ends of second pressure spring are pegged graft respectively and are fixed in the spring jack that corresponds, excessive in-process to three kinds of problem position of sitting at standard position of sitting like this, the second pressure spring is perhaps extruded or stretched, produce a resistance, give the warning of user a perception, remind the user to initiatively correct the posture, just so can the significantly reduced number of times of forcing the trigger, only when the user is special attention power in other aspects and does not know or lazily and surpass the correct posture scope to the resistance, force to correct and just can be triggered.

Furthermore, the location rope is when using, and under the standard position of sitting, the location rope is reserved certain surplus, is in the lax state, then pegs graft through the location round pin axle and fixes a position in locating hole and round pin axle jack, and the location rope has two effects, and first prevent that the user from excessively bending back, and the second is protected to the second pressure spring, prevents to excessively bend back and leads to the second pressure spring to be out of action by the tensile back of limit.

Furthermore, the writing area is provided with a forced correction structure, so that a user can correct the posture not only during reading but also during writing, and the use range and flexibility are enlarged.

Furthermore, the main rod is of a split structure, the height of the main rod can be adjusted according to different heights of users, and the main rod can be screwed down and positioned through the positioning screw after adjustment.

Furthermore, the ribbon unit adopts the material that this kind of elasticity of plastics ribbon or strap is very little, increases the travelling comfort when the purpose does not influence the result of use, can dismantle the grafting through the grafting hasp, more facilitates the use.

Furthermore, the front groove wall of the second groove is an arc surface matched with the second support plate in the rotating process, so that the writing tool cannot fall into the second groove in the downward rotating process of the front end of the second support plate, and can be kept on a table top after being returned.

Furthermore, the chair is provided with a forced constraint structure, when the waist and back muscles of a user relax, the waist bends backwards and the head and the shoulder vertically descend, the cover plate is extruded backwards, once the waist and the shoulder exceed a set range, the jacking end of the ejector rod penetrates through the circular hole to jack the back of the user and is matched with the inserted rod on the correction learning table, so that the chest and the back of the user are all jacked, and the user is forced to sit straight.

Drawings

FIG. 1 is a schematic diagram of the rectification learning table of the present invention;

fig. 2 is a schematic structural view of the band unit;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 4 is an enlarged schematic view of the structure at B in FIG. 1;

FIG. 5 is an enlarged schematic view of the structure at C in FIG. 1;

FIG. 6 is a schematic view of the construction of the chair of the present invention;

fig. 7 is a schematic view showing the use state of the rectification learning table and the chair of the invention.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. For convenience of description, the components of the embodiments having the same structure are not all numbered to ensure clarity.

An embodiment of a sitting posture rectification device for preventing myopia is shown in fig. 1-7, which comprises a rectification learning table and a seat, wherein the rectification learning table comprises table legs 1, a table top 2, a rectification mechanism and a controller 10, the rectification mechanism is arranged in the middle of the rear end surface of the table top in a pitching rotation mode, the rectification mechanism is matched with the table top in a pitching rotation mode through a sleeve 24 fixed at the rear end of the table top and a hinge shaft 11 inserted in the sleeve 24 in a rotation mode, the table top comprises a front bookshelf area and a middle and rear writing area, the bookshelf area is used for placing books to be read, the books have a certain inclination angle and are convenient to read, the bookshelf area comprises a first groove 3, a first support plate 5 hinged to the top of the rear side wall of the first groove in a pitching mode through a hinge, and a first electric push rod 4 arranged in the first groove, the top end of the first electric push rod 4, the bottom end of the first electric push rod is hinged at the bottom of the first groove 3, the size, the telescopic stroke and the hinged positions of the two ends of the first electric push rod meet the requirement that after the electric push rod retracts, the first supporting plate 5 is in an inclined state with the front end lower than the rear end, the inclined angle can be set as required, for example, 30 degrees, the correcting mechanism comprises a main rod 12, an auxiliary rod 13 and an inserting rod 14, the upper end of the main rod is provided with a blind hole extending along the axis, the bottom of the blind hole is provided with a first pressure spring 20, the auxiliary rod 13 is inserted into the blind hole and is in jacking arrangement with the first pressure spring, the auxiliary rod is provided with a through hole extending along the axis, the top of the auxiliary rod is connected with a cross rod 16, the two ends of the cross rod are provided with binding belt units 15, the inserting rod 14 is inserted into the through holes of the first pressure spring 20 and the auxiliary rod 13, an annular positioning baffle, be equipped with on the upper surface of location fender edge and be used for with vice pole bottom terminal surface roof pressure complex pressure sensor 23, the desktop rear end is equipped with the cross-section that extends along the fore-and-aft direction and is the jack 36 of rectangle, just to setting up a set of light detecting element on the upper and lower inner wall of jack, and light detecting element includes a set of correlation sensor, perhaps including the LED lamp 35 of locating the jack upper wall and locate light sensor 37 under the LED lamp. An elastic light baffle 25 is arranged in the jack in a sliding and inserting mode, the rear end of the light baffle is connected to the main rod, the front end of the light baffle is a free end, the light baffle can be made of opaque rubber, the purpose is that when the main rod rotates in a pitching mode, the light baffle is slightly bent, the stress is much smaller, and the shape is easy to recover, a through hole 38 for detecting light to pass through is arranged on the light baffle when the main rod inclines forwards beyond a set position is arranged, in the embodiment, the through hole is a long hole, the purpose is that after the set position is exceeded, a controller can continuously obtain light signals, misjudgment is avoided, the length of the long hole is not shorter than the moving distance of the light baffle when the main rod touches a table top from the set position, the light baffle with the long hole is adopted, control is achieved through light, compared with hard connection, the light baffle is hardly influenced by, the long-lived, pressure sensor 23 passes through the wire and is connected with the controller sampling in the desktop, and the light detection unit passes through the wire and is connected with the controller sampling, and controller 10 and first electric putter control connection, in this embodiment, the wire 26 of connecting pressure sensor 23 can be followed the mobile jib and passed to bond in one side of light baffle, also can supply wire 26 to pass connection director in the desktop as the trompil at first.

The writing area comprises a second groove 9, a second support plate 8 which is hinged to the top of the rear side wall of the second groove through a hinge in a pitching mode, and a second electric push rod 7 which is arranged in the second groove, the top end of the second electric push rod is hinged to the bottom of the second support plate, the bottom end of the second electric push rod is hinged to the bottom of the second groove, the size, the telescopic stroke and the hinged positions of the two ends of the second electric push rod meet the requirement that after the electric push rod retracts, the second supporting plate 8 is in an inclined state that the front end is lower than the rear end, the inclined angle can be set according to requirements, for example, 30 degrees, the controller 10 is positioned in the second groove and is in control connection with the second electric push rod, in order to prevent the writing tool from falling into the second groove in the process of downwards rotating the front end of the second supporting plate, the second groove can be kept on a table top after returning, and the front groove wall 6 of the second groove is a cambered surface matched with the second supporting plate in the rotating process; horizontal pole 16 has the perforation 17 in the position that corresponds with the through-hole of vice pole, the axial cross-section that the top of inserted bar 14 has flexible plastic material or rubber material to make is the semicircle, half oval or trapezoidal roof pressure portion 18, the distance of roof pressure portion to perforation upper end is less than the distance between vice pole bottom to the pressure sensor before using, the purpose is when guaranteeing to reach pressure sensor bottom vice pole, the roof pressure portion of inserted bar can pass perforation roof pressure chest, wear out length through setting up roof pressure portion material and the biggest, under the prerequisite of guaranteeing safety, let the user produce uncomfortable sense, prevent that the user from regard as the helper of a support health with the horizontal pole and through lying prone on the horizontal pole lazily, in this embodiment, when vice pole bottom reachs pressure sensor, the length that roof pressure portion wore out from the perforation can be set for 1 centimetre. The control logic of the present embodiment is relatively simple, and the controller is an existing product, such as a PLC controller or an Intel I3, I5, and an AMD microprocessor, as long as the functions can be implemented.

The rear end face of mobile jib and desktop corresponds the department and all is equipped with spring jack 27, 34, the both ends of second pressure spring 28 are pegged graft respectively and are fixed in the spring jack that corresponds, excessive in-process to three kinds of problem position postures at standard position of sitting like this, the second pressure spring is perhaps extruded or stretched, produce a resistance, give the warning of user a perception, remind the user to initiatively correct the posture, just so can the significantly reduced number of times of forcing the trigger, only when the user is special attention power in other aspects and does not know or lazily and surpass the correct posture scope to the resistance, force to correct and just can be triggered. The front side of mobile jib still sets firmly steel couple 29, and the rear end of desktop is equipped with along horizontal extension's pivot 31 and the locating plate 33 of integrative setting with the pivot, and the locating plate is located desktop one side, is equipped with round locating hole 32 on the locating plate, sets up round pin axle jack (not shown in the figure) with the locating hole dead against position on the horizontal side of desktop, and location rope 30 is wire rope, and one end hook is hung on couple 29 and the other end winding is fixed in the pivot. The location rope is when using, and under the standard position of sitting, the location rope is reserved certain surplus, is in the lax state, then pegs graft through the location round pin axle and fixes a position in locating hole and round pin axle jack, and the location rope has two effects, and first prevents that the user from excessively bending backward, and the second is protected the second pressure spring, prevents to excessively bend backward to lead to the second pressure spring to be out of action by the tensile back of limit.

In this embodiment, the main rod is a split structure, and includes an upper section 121 with an upper axial section in an H-shape and a lower section 122 with a convex plug 123 at a lower portion, the lower end of the lower section is hinged to the middle of the rear end face of the table top in a pitching rotation manner, a threaded hole is radially formed in the lower portion of the upper section 121, and a positioning screw 19 is screwed in the threaded hole. The main rod is of a split structure, the convex-shaped plug 123 of the lower section 122 is inserted into the bottom of the upper section 121, the height of the main rod can be adjusted according to different heights of users, and the main rod can be screwed down and positioned through the positioning screw after adjustment.

The ribbon unit 15 is two cloth belts 151, 152 at the two ends of the fixed cross bar, the two cloth belts can be disassembled and inserted together through the inserting lock catch, the inserting lock catch comprises an inserting male buckle 154 and an inserting female buckle 153, the inserting lock catch is the prior art, the helmet, the safety belt and the like are commonly used, and the structure is not described in detail here. A plastic binding tape or cloth tape with two ends detachably fixed at two ends of the cross bar

The sitting posture correction device for preventing myopia of the embodiment further comprises a seat, the seat comprises a supporting leg 39, a seat surface 46 and a seat back 40, the seat back is plate-shaped, a tubular enclosing plate 45 is arranged on the front surface of the seat back, a cover plate 41 is arranged on the tubular enclosing plate in a sliding inserting and covering mode, a plurality of pressure springs 44 are arranged between the cover plate and the front surface of the seat back, a plurality of plastic or rubber ejector rods 43 are fixedly arranged on the front surface of the seat back in the tubular enclosing plate, each ejector rod is provided with a jacking end 42 with a semicircular, semi-elliptical or trapezoidal axial cross section, the length of each ejector rod is longer than the horizontal width of the enclosing plate, a gap is formed between the jacking end of each front ejector rod and the cover plate, a plurality of round holes (not shown in the figure) for the ejector rods to penetrate through are formed in the position, which is right. Set up the structure of forcing the restraint on the seat, when user's back muscle relaxs, the waist is back bend and the vertical time down of head and shoulder, the apron is backward extruded, in case surpass the settlement scope, the roof pressure end of ejector pin passes round hole roof pressure user back, and corrects the inserted bar cooperation on the study table for user's chest back all is by the roof pressure, forces the user to sit straight health.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.