CN114287758A - Posture-correcting myopia-preventing desk and chair - Google Patents

Abstract

The invention discloses a posture-correcting device for correcting posture, myopia prevention desk and chair, including supporting the floorbar subassembly, it is equipped with support frame and desk body to support floorbar subassembly top one side, it is equipped with flexible support post to support floorbar subassembly top, the inside stand stroke locating component that is equipped with of flexible support post, flexible support post one side top is equipped with the stay cord frame, flexible support post top is equipped with seat support frame and seat, the seat both sides are equipped with fixed handrail and the handrail of acting as go-between, seat one side is equipped with back and flexible back support frame, flexible back support frame both sides are equipped with the couple support arm, the main shaft is through joining in marriage dress bearing tile box and a plurality of screw and flexible back support frame lock connection, flexible back support frame back is equipped with the marble lock subassembly, connect through two group one of acting as go-between marble lock subassembly and main shaft and the stay cord frame, connect through two group two of acting as go-between marble lock subassembly and main shaft and the stay cord frame. Has the advantages that: has the functions of correcting sitting posture, preventing humpback, limiting forward leaning and bending back and preventing myopia.

Description

Posture-correcting myopia-preventing desk and chair

Technical Field

The invention relates to the technical field of desk and chair, in particular to a posture-correcting and myopia-preventing desk and chair.

Background

Among the practical students, the myopia of primary school students accounts for 28%, the myopia of middle school students accounts for 60%, the myopia of high school students accounts for 85%, and the myopia of college students accounts for more than 90%, which brings great inconvenience to life, and in addition, people with normal vision are difficult to be identified by state recruits, the state is forced to reduce the standard of recruiting, and the product is developed for the physical and mental health of students, qualified soldiers can be identified by the later state, and the product is more effective in defending the motherland.

The existing prevention products on the market comprise myopia prevention products such as an eye health care instrument, an eye massage instrument, a shouldering Jia and a blocking type desk. The eye health care instrument and the eye massage instrument mainly aim at eyes, mainly solve the problem of massage, can effectively relieve eye fatigue, but cannot fundamentally correct sitting postures of students to prevent myopia. The best dorsum mainly aims at stretching the chest and back and assisting in adjusting the sitting posture, can effectively prevent hunchback, but students still can bend over the table to study and cannot effectively prevent myopia; the blocking type can prevent the student from bending over the desk and preventing myopia, but the sitting posture is not corrected obviously; in conclusion, the function analysis of the existing products can not simultaneously and effectively correct the posture, prevent humpback and prevent myopia.

An effective solution to the problems in the related art has not been proposed yet.

Disclosure of Invention

Aiming at the problems in the related art, the invention provides a posture-correcting and myopia-preventing desk and chair, which aims to overcome the technical problems in the prior related art.

Therefore, the invention adopts the following specific technical scheme:

a posture correcting and myopia preventing desk and chair comprises a supporting bottom beam assembly, wherein a supporting frame is arranged on one side of the top end of the supporting bottom beam assembly, a desk body is arranged at the top end of the supporting frame, a telescopic supporting upright post is arranged in the middle of the top end of the supporting bottom beam assembly, an upright post stroke positioning assembly is arranged inside the telescopic supporting upright post, a wire drawing frame is arranged at the top end of one side of the telescopic supporting upright post, a seat board supporting frame is arranged at the top end of the telescopic supporting upright post, a seat board is arranged at the top end of the seat board supporting frame, fixed handrails are arranged on two sides of the seat board, the fixed handrails are connected with the seat board supporting frame in a matching mode through a movable rotating shaft I, a wire drawing handrail is arranged at the top end of each fixed handrail, the wire drawing handrail is connected with the fixed handrails in a matching mode through a movable rotating shaft II, a backrest is arranged on one side of the seat board, the top end of the backrest is provided with a telescopic backrest support frame, the top end of the telescopic backrest support frame, which is close to one side of the seat plate, is provided with a telescopic backrest plate, the two sides of the telescopic backrest support frame are both provided with hook support arms, the hook support arms and the telescopic rod are provided with screws for locking connection, one end of the telescopic rod is inserted into the main shaft, the main shaft is assembled and locked with the telescopic backrest support frame through an assembled bearing bush box (an inner assembled bearing) and a plurality of screws, one end of the hook support arm is provided with a hook, the hook and the hook support arm are connected in a three-phase matching way through a movable rotating shaft, the back of the telescopic backrest support frame is provided with a marble lock component, the marble lock component is matched and connected with the stay wire handrail through two stay wire groups I, the marble lock assembly is connected with the main shaft and the stay wire frame in a matched mode through two stay wire groups.

Further, support the floorbar subassembly and constitute by supporting girder, tie-beam and regulation backup pad, support the girder with the tie-beam is welded connection structure, it is located to adjust the backup pad support the girder with between the tie-beam, the both ends of supporting the girder all are equipped with wear-resisting plastic sheath.

Furthermore, one side that supports the girder and be close to adjust the backup pad is provided with the bar spout, the both ends of adjusting the backup pad all are provided with the bridging board, one side of bridging board be provided with alternate in the nylon wheel subassembly of bar spout, support the inside a plurality of nylon wheels that are equipped with of girder, the bridging board with support and cooperate through a plurality of nylon wheels and connect between the girder.

Furthermore, stand stroke locating component comprises stroke locating needle and a plurality of reset spring, reset spring cover is located the stroke locating needle, the well upper portion of stroke locating needle is provided with the spring tray, the bottom of spring tray is provided with the packing ring.

Furthermore, the bottom end of the telescopic upright post 4 is fixedly provided with a second flange matched and connected with the adjusting support plate, and the second flange is matched, locked and connected with the adjusting support plate through a plurality of bolts.

Furthermore, the telescopic supporting upright post comprises an upper upright post and a lower upright post, the upper upright post is sleeved on the lower upright post, a first flange plate is arranged at the top end of the upper upright post, a wire drawing seat is welded on the upper upright post, a second flange plate is arranged on the lower upright post, a driven wheel is arranged at the top end of the lower upright post, the driven wheel is connected with the lower upright post through double-nut locking assembly, a driven wheel key is arranged on one side of the driven wheel, a limiting sliding groove matched with the driven wheel key is formed in the top end of one side of the upper upright post, and the wire drawing frame is connected with the driven wheel key through bolt and screw locking.

Furthermore, the bottom end of the telescopic backrest support frame is inserted into the top end of the backrest, and the telescopic backrest support frame and the backrest are connected in a matched mode through a height adjusting screw rod to form the telescopic backrest support frame.

Furthermore, a hook support arm length adjusting groove is formed in the hook support arm, a protective cover is arranged at the top end of the back face of the telescopic backrest support frame, and screw holes matched with the protective cover are formed in the bearing bush box (inner bearing) which is assembled on the two sides of the telescopic backrest support frame and the main shaft.

Furthermore, the marble lock subassembly comprises fixed bolt group one of acting as go-between, fixed mounting bracket, spacing sleeve lock nut, spacing sleeve and spacing marble lock dop, fixed mounting bracket side-mounting acts as go-between and adjusts bolt group two, fixed bolt group one of acting as go-between with act as go-between group one matches and connects, act as go-between adjust bolt group two with act as go-between group two matches and connects, spacing sleeve by spacing sleeve lock nut fixed connection in one side of fixed mounting bracket, spacing marble lock dop alternate in inside the spacing sleeve, the inside of spacing sleeve is provided with the spring.

Further, one side of main shaft seted up with spacing bullet lock dop assorted spacing hole, the main shaft by both ends take the central siphon of interior circle of turnbuckle foreign side, the telescopic link is inserted in the main shaft the bearing position at main shaft both ends designs to take turnbuckle end cap subassembly and bearing bush box (interior supporting bearing) to make up and constitutes, the end cap subassembly with be threaded connection structure between the central siphon.

The invention has the beneficial effects that: the posture correcting and myopia preventing desk and chair comprises a supporting bottom beam assembly, a supporting frame, a desk body, a telescopic supporting upright post, an upright post stroke positioning assembly, a wire pulling frame, a seat plate supporting frame, a seat plate, a fixed armrest, a first movable rotating shaft, a wire pulling armrest, a second movable rotating shaft, a backrest, a telescopic backrest supporting frame, a telescopic backrest plate, a hook supporting arm, a telescopic rod, a screw, a main shaft, a bearing tile box (internally provided with a bearing), a hook, a third movable rotating shaft, a marble lock assembly, a first wire pulling group and a second wire pulling group.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a posture-correcting and myopia-preventing desk and chair according to an embodiment of the invention;

FIG. 2 is a schematic diagram of a back partial structure of a posture-correcting and myopia-preventing desk and chair according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a schematic structural diagram of a column stroke positioning assembly of a posture-correcting and myopia-preventing desk and chair according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a support bottom beam assembly of a posture-correcting, myopia-preventing desk and chair according to an embodiment of the present invention;

FIG. 6 is a schematic view of a connection structure of a wire-pulling rack and a telescopic support column of a posture-correcting and myopia-preventing desk and chair according to an embodiment of the invention;

FIG. 7 is a schematic structural view of a telescopic support column of a posture-correcting and myopia-preventing desk and chair according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a spindle assembly of a posture-correcting and myopia-preventing desk and chair according to an embodiment of the invention.

In the figure:

1. supporting a bottom beam assembly; 2. a support frame; 3. a desk body; 4. a telescopic support column; 5. a column stroke positioning assembly; 6. a wire pulling frame; 7. a seat support frame; 8. a seat plate; 9. fixing the handrail; 10. a first movable rotating shaft; 11. a guy wire handrail; 12. a second movable rotating shaft; 13. a backrest; 14. a telescopic backrest support frame; 15. a telescopic back board; 16. a hook support arm; 17. a telescopic rod; 18. a screw; 19. a main shaft; 20. bearing shell boxes (internal bearings); 21. hooking; 22. a movable rotating shaft III; 23. a pinball lock assembly; 24. a first stay wire group; 25. a second stay wire group; 26. supporting the main beam; 27. a connecting beam; 28. adjusting the support plate; 29. a wear-resistant plastic sleeve; 30. a strip-shaped chute; 31. a bridging plate; 32. a nylon wheel assembly; 33. a limiting hole; 34. a stroke positioning needle; 35. a return spring; 36. a spring tray; 37. a gasket; 38. an upper upright post; 39. a lower upright post; 40. a first flange plate; 41. a wire pulling seat; 42. a second flange plate; 43. a driven wheel; 44. double nuts; 45. a driven wheel key; 46. a limiting chute; 47. a height adjusting screw; 48. a hook support arm length adjusting groove; 49. a protective cover; 50. a screw hole; 51. a first stay wire fixing bolt group; 52. fixing the mounting rack; 53. the nut is locked by the limiting sleeve; 54. a limiting sleeve; 55. a ball lock chuck is limited; 56. a second bracing wire adjusting bolt group; 57. an axle tube; 58. and the plug component.

Detailed Description

For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the invention, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.

According to the embodiment of the invention, the invention provides a posture-correcting and myopia-preventing desk and chair.

The first embodiment is as follows:

as shown in fig. 1-8, the posture-correcting and myopia-preventing desk and chair according to the embodiment of the present invention comprises a supporting base beam assembly 1, a supporting frame 2 is disposed on one side of the top end of the supporting base beam assembly 1, a desk body 3 is disposed on the top end of the supporting frame 2, a telescopic supporting upright column 4 is disposed in the middle position of the top end of the supporting base beam assembly 1, an upright column stroke positioning assembly 5 is disposed inside the telescopic supporting upright column 4, a wire-pulling frame 6 is disposed on the top end of one side of the telescopic supporting upright column 4, a seat supporting frame 7 is disposed on the top end of the telescopic supporting upright column 4, a seat 8 is disposed on the top end of the seat supporting frame 7, fixed handrails 9 are disposed on both sides of the seat 8, the fixed handrails 9 are connected with the seat supporting frame 7 by a movable rotating shaft 10 in a matching manner, a handrail wire-pulling wire 11 is disposed on the top ends of the fixed handrails 9, the pull line armrest 11 and the fixed armrest 9 are connected in a matching manner through a movable rotating shaft II 12, a backrest 13 is arranged on one side of the seat plate 8, a telescopic backrest support frame 14 is arranged on the top end of the backrest 13, a telescopic backrest plate 15 is arranged on the top end of the telescopic backrest support frame 14 close to one side of the seat plate 8, hook support arms 16 are arranged on two sides of the telescopic backrest support frame 14, the hook support arms 16 and a telescopic rod 17 are assembled with screws 18 and are in locking connection, one end of the telescopic rod 17 is inserted into a main shaft 19, the main shaft 19 is assembled with the telescopic backrest support frame 14 through assembling a bearing tile box 20 (an internal bearing) and a plurality of screws, a hook 21 is arranged at one end of the hook support arm 16, the hook support arm 21 and the hook support arm 16 are connected in a matching manner through a movable rotating shaft III 22, and an elastic ball lock assembly 23 is arranged on the back of the telescopic backrest support frame 14, the marble lock assembly 23 is matched and connected with the pull wire handrail 11 through two pull wire groups I24, and the marble lock assembly 23 is matched and connected with the main shaft 19 and the pull wire frame 6 through two pull wire groups II 25.

By means of the technical scheme, the desk has the functions of correcting sitting postures, preventing humpback, limiting forward leaning and bending back of a body and preventing myopia through a posture correcting and myopia preventing desk which is composed of a supporting bottom beam assembly 1, a supporting frame 2, a desk body 3, a telescopic supporting upright post 4, an upright post stroke positioning assembly 5, a wire pulling frame 6, a seat plate supporting frame 7, a seat plate 8, a fixed armrest 9, a movable rotating shaft I10, a wire pulling armrest 11, a movable rotating shaft II 12, a backrest 13, a telescopic backrest supporting frame 14, a telescopic backrest plate 15, a hook supporting arm 16, a telescopic rod 17, a screw 18, a main shaft 19, a bearing tile box 20 (internally provided with a bearing), a hook 21, a movable rotating shaft III 22, an elastic ball lock assembly 23, a wire pulling assembly I24 and a wire pulling assembly II 25.

Example two:

as shown in fig. 1-8, the bottom supporting beam assembly 1 is composed of a main supporting beam 26, a connecting beam 27 and an adjusting supporting plate 28, the main supporting beam 26 and the connecting beam 27 are welded, the adjusting supporting plate 28 is located between the main supporting beam 26 and the connecting beam 27, wear-resistant plastic sleeves 29 are respectively sleeved at two ends of the main supporting beam 26, a strip-shaped chute 30 is arranged at one side of the main supporting beam 26 close to the adjusting supporting plate 28, bridging plates 31 are respectively arranged at two ends of the adjusting supporting plate 28, nylon wheel assemblies 32 inserted into the strip-shaped chutes 30 are arranged at one sides of the bridging plates 31, a plurality of nylon wheels are arranged inside the main supporting beam 26, the bridging plates 31 are connected with the main supporting beam 26 through a plurality of nylon wheels in a matching manner, a second flange 42 connected with the adjusting supporting plate 28 in a matching manner is fixedly arranged at the bottom end of the telescopic upright column 4, the second flange 42 is matched and locked with the adjusting support plate 28 through a plurality of bolts.

Example three:

as shown in fig. 1-8, the column stroke positioning assembly 5 is composed of a stroke positioning pin 34 and a plurality of return springs 35, the return springs 35 are sleeved on the stroke positioning pin 34, a spring tray 36 is arranged at the middle upper part of the stroke positioning pin 34, a washer 37 is arranged at the bottom end of the spring tray 36, the telescopic support column 4 is composed of an upper column 38 and a lower column 39, the upper column 38 is sleeved on the lower column 39, a first flange plate 40 is arranged at the top end of the upper column 38, a wire pulling seat 41 is welded on the upper column 38, a second flange plate 42 is arranged on the lower column 39, a driven wheel 43 is arranged at the top end of the lower column 39, the driven wheel 43 is locked and assembled with the lower column 39 through a double nut 44, a driven wheel key 45 is arranged at one side of the driven wheel 43, a limit sliding groove 46 matched with the driven wheel key 45 is arranged at the top end of one side of the upper column 38, the wire pulling frame 6 is connected with the driven wheel key 45 in a locking mode through a bolt and a screw.

Example four:

as shown in fig. 1-8, the bottom end of the telescopic backrest support frame 14 is inserted into the top end of the backrest 13, the telescopic backrest support frame 14 is connected with the backrest 13 by a height adjusting screw 47 in a matching manner to form the telescopic backrest support frame 14, a hook support arm length adjusting groove 48 is formed on the hook support arm 16, a protective cover 49 is arranged at the top end of the back surface of the telescopic backrest support frame 14, screw holes 50 matched with the protective cover 49 are respectively arranged on the bearing tile boxes 20 (internal bearings) assembled on both sides of the telescopic backrest support frame 14 and the main shaft 19, the ball lock assembly 23 is composed of a first bracing wire fixing bolt set 51, a fixing mounting frame 52, a locking nut 53 of a limiting sleeve, a limiting sleeve 54 and a second limiting ball lock head 55, a second bracing wire adjusting bolt set 56 is installed on one side of the fixing mounting frame 52, the utility model discloses a bearing position of main shaft 19, including main shaft 19, limit sleeve 54, limit sleeve locking nut 53, telescopic link 17, telescopic head assembly 58, end cap assembly 58 and central siphon 57, be equipped with the threaded connection structure between the end cap assembly 58 and the central siphon 57, be equipped with the threaded connection structure between the end cap assembly 58 with 24 cooperatees of group of acting as go-between, two 56 of the adjusting bolt group of acting as go-between with two 25 cooperatees of group of acting as go-between are connected, limit sleeve 54 by limit sleeve locking nut 53 fixed connection in one side of fixed mounting bracket 52, limit ball lock dop 55 alternate in inside limit sleeve 54, the inside of limit sleeve 54 is provided with the spring, one side of main shaft 19 seted up with limit hole 33 of limit ball lock dop 55 assorted, main shaft 19 by both ends area thread turn round central siphon 57 in the foreign side, telescopic link 17 insert in main shaft 19, the bearing position at main shaft 19 both ends designs to take thread turn-on end cap assembly 58 and bearing tile box 20 (interior supporting bearing) to make up and constitute, end cap assembly 58 with threaded connection structure between the central siphon 57.

The working principle is as follows:

the posture-correcting and myopia-preventing desk and chair has the size of three medium, medium and small, matched desk and chair is selected for use according to the height of students of 3-9 grades, the students of the first, second and preschool ages are not recommended to use, the students of 3, 4 grades are recommended to use small, 5, 6, 7 grades are recommended to use medium and large, the students of more than 7 grades are recommended to use medium, the height of the hook support arm is adjusted according to the height, the length of the hook support arm is adjusted according to the fatness, the distance between the seat plate 8 and the desk body 3 is adjusted by freely sliding back and forth through the nylon wheel assembly 32, the hook support arm 16 is in a vertical state under the non-use state, when the student sits on, the telescopic rod and the micro-arm are firstly pulled open and then sit on, the seat plate 8 is pressed downwards for 3CM, meanwhile, the wire pulling frame 6 and the wire pulling group two 25 pull the main shaft 19 to rotate backwards for 90 degrees, so that the hook support arm 16 is driven by the main shaft 19 to rotate and lift the hook, the main shaft 19 drives the hook support arm 16 to rotate 90 degrees and is locked by the marble lock, the hook 21 is blocked in front of the chest of a student, and the body bow is limited to bend over a table forward, so that the dual purposes of correcting the body posture and preventing myopia are achieved. "note: the rising and falling of the seat surface and the rising and falling of the hook support arm driven by the main shaft are carried out synchronously.

A table and chair installation step:

firstly, a plurality of nylon wheels are pushed into a strip-shaped sliding groove 30 in the main supporting beam 26, and secondly, a shaft with screw threads and a nylon wheel assembly 32 are inserted into a nylon wheel hole through the strip-shaped sliding groove 30. And thirdly, assembling the nylon wheel assembly 32 and the connecting bridge plate 31 and locking the nylon wheel assembly and the connecting bridge plate with nuts. Fourthly, the adjusting support plate 28 is placed on the bridging plate 31 and is locked and installed by a plurality of screws. And fifthly, installing a wear-resistant plastic sleeve 29. Sixthly, the upper upright post 38 is sleeved on the lower upright post 39 and leaks out of the top of the lower upright post 39. Seventhly, the driven wheel 43 is sleeved at the top end of the lower upright post 39. And eighthly, locking the double nuts 44 to prevent the driven wheel 43 from falling off, but enabling the driven wheel to rotate freely. And ninthly, inserting the thin end of the stroke positioning needle 34 upwards into the lower upright post 39. Tenth, a return spring 35 is sleeved at the bottom of the stroke positioning needle 34, and the washer 37 is selected according to the condition of the return spring 35. Eleventh, the second flange plate 42 and the pre-assembled adjusting support plate 28 are screwed and installed by a plurality of screws. And twelfth, the upper upright post 38 is pulled upwards, the driven wheel key 45 is pulled into the limiting sliding groove 46, and the first flange plate 40 and the seat plate supporting frame 7 are locked and installed by a plurality of screws. Thirteen, a backrest 13 is installed. Fourteen, the telescopic backrest support frame 14 is inserted into the backrest 13. Fifteen, mounting a height adjusting screw rod 47 to assemble a telescopic backrest support frame. Sixthly, inserting one end with the square of the telescopic rod 17 into the main shaft 19, and installing the plug assembly 58 with the screw thread of the main shaft 19. Seventeen, the main shaft 19 is provided with a bearing bush box 20 (an inner bearing). Eighteen, the main shaft 19 is locked and installed with the telescopic backrest support frame 14 through a bearing bush box 20 (an internal bearing) by a plurality of screws. Nineteen mount pinball lock assemblies. Twenty, the wire-pulling frame 6 is arranged on the driven wheel key 45 and is locked and connected by a screw rod. Twenty one, install the group of guy wires 24, connect guy wire handrail 11 and marble lock assembly 23 and adjust. Twenty-two, install the second 25 group of stay wires, connect the main axis 19 and stay wire frame 6 and adjust. Twenty-three, the telescopic backrest plate 15 and the protective cover 49 are installed. Twenty-four, install the seat plate 8. Twenty five, the mounting support frame 2 is connected with the support bottom beam component 1 and is locked and connected by a screw rod. Twenty six, install the desk body 3.

The working principle is summarized as follows:

because the seat surface is pressed by the upright post to descend, the pressure reducing reset spring bounces the seat surface upright post to ascend and reset, thereby the pull wire seat and the pull wire frame are opened and closed to achieve the purpose of pulling the main shaft to rotate through the pull wire and then driving the hook supporting arm to swing by the main shaft, the assembly of the driven wheel and the upper upright post can ensure that the main shaft can be effectively controlled at any angle of the seat rotation, the assembly is convenient for installing the pull wire frame because the key strip of the driven wheel is slightly higher than the excircle surface of the upper upright post, the mutual friction between the upper upright post and the pull wire frame is effectively avoided, the lifting limit of the seat is also limited, the marble lock mainly locks the main shaft and releases the locking function, the descending limit of the seat plate is determined by the length of the positioning needle, namely, the positioning needle is pressed to the adjusting supporting plate to be limited, the extension of the upright post has only three centimeter strokes and is slightly larger than the rotating radius of the main shaft, the effective locking of the main shaft of the marble lock is ensured, and the spherical design of the top end of the positioning needle is realized, the seat is convenient to rotate.

In summary, with the above technical solution of the present invention, the posture correcting and myopia preventing desk and chair comprises a supporting bottom beam assembly 1, a supporting frame 2, a desk body 3, a telescopic supporting column 4, a column stroke positioning assembly 5, a wire pulling frame 6, a seat board supporting frame 7, a seat board 8, a fixed armrest 9, a movable rotating shaft I10, a wire pulling armrest 11, a movable rotating shaft II 12, a backrest 13, a telescopic backrest supporting frame 14, a telescopic backrest board 15, a hook supporting arm 16, a telescopic rod 17, a screw 18, a main shaft 19, a bearing bush box 20 (with a bearing inside), a hook 21, a movable rotating shaft III 22, a ball lock assembly 23, a wire pulling assembly I24 and a wire pulling assembly II 25, and has functions of correcting sitting posture, preventing humpback, limiting forward leaning of the body and bending over of the back, and preventing myopia.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. A posture correcting and myopia preventing desk and chair is characterized by comprising a supporting bottom beam assembly (1), wherein a supporting frame (2) is arranged on one side of the top end of the supporting bottom beam assembly (1), a desk body (3) is arranged on the top end of the supporting frame (2), a telescopic supporting upright post (4) is arranged in the middle of the top end of the supporting bottom beam assembly (1), an upright post stroke positioning assembly (5) is arranged inside the telescopic supporting upright post (4), a wire drawing frame (6) is arranged on the top end of one side of the telescopic supporting upright post (4), a seat supporting frame (7) is arranged on the top end of the telescopic supporting upright post (4), a seat (8) is arranged on the top end of the seat supporting frame (7), fixed handrails (9) are arranged on two sides of the seat (8), and the fixed handrails (9) are connected with the seat supporting frame (7) in a matching manner through a movable rotating shaft (10), the top end of the fixed armrest (9) is provided with a stay wire armrest (11), the stay wire armrest (11) is matched and connected with the fixed armrest (9) through a movable rotating shaft II (12), one side of the seat plate (8) is provided with a backrest (13), the top end of the backrest (13) is provided with a telescopic backrest support frame (14), the top end of the telescopic backrest support frame (14) close to one side of the seat plate (8) is provided with a telescopic backrest plate (15), two sides of the telescopic backrest support frame (14) are respectively provided with a hook support arm (16), the hook support arms (16) are matched and locked with telescopic rods (17) through screws (18), one end of each telescopic rod (17) is inserted into a main shaft (19), the main shaft (19) is matched and locked and connected with the telescopic backrest support frame (14) through a bearing tile box (20) (an internal bearing) and a plurality of screws, the one end of couple support arm (16) is provided with couple (21), couple (21) with cooperate through activity pivot three (22) between couple support arm (16) to be connected, the back of flexible back support frame (14) is provided with marble lock subassembly (23), marble lock subassembly (23) with it cooperatees through two between handrail (11) of acting as go-between and connects to draw line group one (24), marble lock subassembly (23) with main shaft (19) with draw line frame (6) between cooperate through two and connect to draw line group two (25).

2. A posture-correcting and myopia-preventing desk and chair as claimed in claim 1, wherein the supporting bottom beam assembly (1) is composed of a supporting main beam (26), a connecting beam (27) and an adjusting support plate (28), the supporting main beam (26) and the connecting beam (27) are of a welded connection structure, the adjusting support plate (28) is located between the supporting main beam (26) and the connecting beam (27), and both ends of the supporting main beam (26) are sleeved with wear-resistant plastic sleeves (29).

3. A posture-correcting and myopia-preventing desk and chair as claimed in claim 2, wherein a strip-shaped chute (30) is disposed on one side of the supporting main beam (26) close to the adjusting support plate (28), bridging plates (31) are disposed at both ends of the adjusting support plate (28), a nylon wheel assembly (32) inserted into the strip-shaped chute (30) is disposed on one side of the bridging plate (31), a plurality of nylon wheels are mounted inside the supporting main beam (26), and the bridging plates (31) and the supporting main beam (26) are connected by the nylon wheels in a matching manner.

4. A posture-correcting and myopia-preventing desk and chair as claimed in claim 3, wherein a second flange (42) is fixedly arranged at the bottom end of the telescopic upright post (4) and is matched and connected with the adjusting support plate (28), and the second flange (42) is matched and locked with the adjusting support plate (28) through a plurality of bolts.

5. A posture-correcting and myopia-preventing desk and chair as claimed in claim 4, wherein the column stroke positioning assembly (5) is composed of a stroke positioning needle (34) and a plurality of return springs (35), the return springs (35) are sleeved on the stroke positioning needle (34), a spring tray (36) is arranged at the middle upper part of the stroke positioning needle (34), and a gasket (37) is arranged at the bottom end of the spring tray (36).

6. A posture-correcting and myopia-preventing desk and chair as claimed in claim 5, wherein the telescopic support columns (4) are composed of upper columns (38) and lower columns (39), the upper upright post (38) is sleeved on the lower upright post (39), a first flange plate (40) is arranged at the top end of the upper upright post (38), a stay wire seat (41) is welded on the upper upright post (38), a second flange plate (42) is arranged on the lower upright post (39), the top end of the lower upright post (39) is provided with a driven wheel (43), the driven wheel (43) is locked and assembled by double nuts (44) and is connected with the lower upright post (39), a driven wheel key (45) is arranged at one side of the driven wheel (43), a limiting sliding groove (46) matched with the driven wheel key (45) is arranged at the top end of one side of the upper upright post (38), the wire pulling frame (6) is connected with the driven wheel key (45) in a locking mode through a bolt and a screw rod.

7. A posture-correcting and myopia-preventing desk and chair as claimed in claim 6, wherein the bottom end of the telescopic backrest support frame (14) is inserted into the top end of the backrest (13), and the telescopic backrest support frame (14) is connected with the backrest (13) through a height adjusting screw (47) in a matched manner to form the telescopic backrest support frame (14).

8. A posture-correcting and myopia-preventing desk and chair as claimed in claim 7, wherein the hook support arm (16) is provided with a hook support arm length adjusting groove (48), the top end of the back of the telescopic backrest support frame (14) is provided with a protective cover (49), and both sides of the telescopic backrest support frame (14) and the bearing bush box (20) (inner bearing) assembled with the spindle (19) are provided with screw holes (50) matched with the protective cover (49).

9. A posture-correcting and myopia-preventing desk and chair as claimed in claim 8, wherein the marble lock assembly (23) is composed of a first stay wire fixing bolt set (51), a fixing mounting frame (52), a limiting sleeve locking nut (53), a limiting sleeve (54) and a limiting marble lock chuck (55), a second stay wire adjusting bolt group (56) is arranged on one side of the fixed mounting frame (52), the first stay wire fixing bolt group (51) is matched and connected with the first stay wire group (24), the second pull wire adjusting bolt group (56) is matched and connected with the second pull wire group (25), the limiting sleeve (54) is fixedly connected to one side of the fixed mounting frame (52) through a limiting sleeve locking nut (53), the limiting ball lock is characterized in that the limiting ball lock chuck (55) is inserted into the limiting sleeve (54), and a spring is arranged in the limiting sleeve (54).

10. A posture-correcting and myopia-preventing desk and chair as claimed in claim 9, wherein a limit hole (33) matched with the limit ball lock chuck (55) is formed in one side of the main shaft (19), the main shaft (19) is formed by combining a shaft tube (57) with screw threads at two ends, an outer square and an inner circle, the telescopic rod (17) is inserted into the main shaft (19), bearing positions at two ends of the main shaft are designed to be provided with a screw thread plug assembly (58) and a bearing bush box (20) (an internal bearing), and a threaded connection structure is formed between the plug assembly (58) and the shaft tube (57).

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