A myopia-preventing chair

Abstract

The application discloses a myopia-preventing chair, which comprises a bottom plate, a threaded pipe welded on the top surface of the bottom plate, a third threaded rod matched with the threaded pipe arranged in the pipe, a connecting plate welded on the top end of the third threaded rod, a seat fixedly installed on the top surface of the connecting plate, and a rotating rod rotatably connected to the left top surface of the seat. The first threaded rod, the moving block and the mounting plate are arranged to adjust the height of the backrest. The turbine, the worm and the third threaded rod are arranged to adjust the height of the seat through the connecting plate. The second threaded rod, the lifting plate and the supporting plate are arranged to adjust the height of the supporting plate according to the height of the user, so that the chair can be used by people with different heights. At this time, the chin of the user can be supported on the supporting plate, so that the user can not lean on the table, and the myopia-preventing purpose is achieved.

Description

Technical Field

[0001] This invention relates to the field of seating technology, specifically to an anti-myopia seat. Background Technology

[0002] When students read or write, they often hunch over their desks due to back pain or other reasons. Over time, this can easily lead to myopia and severely impact their eyesight. Traditional student chairs only adjust the height to match the desk, but this still forces children to hunch over while reading or doing homework, which can still affect their vision. Since parents cannot always sit beside their children to supervise and remind them, prolonged reading and studying under these conditions can also lead to myopia. To protect children's vision and prevent myopia, we have proposed an anti-myopia chair. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of the prior art by providing an anti-myopia chair to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an anti-myopia seat, comprising a base plate, a threaded tube welded to the top surface of the base plate, a matching third threaded rod disposed inside the threaded tube, a connecting plate welded to the top end of the third threaded rod, and a seat fixedly mounted on the top surface of the connecting plate, a rotating rod rotatably connected to the left side of the top surface of the seat, a rotating plate mounted on the top end of the rotating rod, a threaded hole opened at the top center of the rotating plate, a matching second threaded rod disposed inside the threaded hole, a lifting plate rotatably connected to the top end of the second threaded rod, a connecting block welded to the top surface of the lifting plate, a support plate welded to one side of the connecting block, a support rod welded to one side of the top surface of the base plate, and a backrest slidably connected to the side of the support rod near the seat.

[0005] As a preferred embodiment of the present invention, guide rods are welded to both sides of the bottom surface of the lifting plate and extend through to the lower part of the rotating plate. The support plate is arranged in an arc shape on the side near the backrest. A limit rod is installed on the bottom surface of the rotating plate away from the rotating rod.

[0006] As a preferred embodiment of the present invention, a stop block is welded to the right side of the top surface of the chair seat, and the stop block is concave. A cavity is opened inside the right side of the chair seat, and a first spring is fixedly installed on the bottom inner wall of the cavity. A locking block is fixedly installed at the top of the first spring, penetrating and extending to the upper part of the chair seat. A locking groove matching the locking block is opened at the bottom of the limiting rod, and one side of the locking block is inclined.

[0007] As a preferred embodiment of the present invention, the top of the limiting rod is provided with a through hole that extends through and to the bottom of the limiting rod, and a movable rod that extends through and to the top of the rotating plate is placed in the through hole, and a pressing plate is fixedly installed at the top of the movable rod.

[0008] As a preferred embodiment of the present invention, a cavity is provided at the connection between the rotating plate and the limiting rod, and a second spring is fixedly installed on the upper outer ring of the movable rod in the cavity, and the bottom end of the second spring is fixedly connected to the bottom inner wall of the cavity. A rotating wheel is installed on the lower end of the second threaded rod.

[0009] As a preferred embodiment of the present invention, a turbine is installed on the upper outer ring of the third threaded rod, a movable cylinder is welded to the bottom surface of the connecting plate, and a worm gear is rotatably connected to one side inner wall of the movable cylinder, extending through and to the outside of the movable cylinder, and the worm gear and the turbine gear mesh with each other. A first handwheel is installed at the end of the worm gear located outside the movable cylinder.

[0010] As a preferred embodiment of the present invention, the top surface of the base plate and inside the threaded tube are provided with a threaded hole that matches the threaded tube. A fixed cylinder is welded to the top surface of the base plate. The lower outer ring of the movable cylinder is located inside the inner ring of the fixed cylinder, and the threaded tube is located inside the fixed cylinder.

[0011] As a preferred embodiment of the present invention, a sliding groove is provided on the side of the support rod near the seat, and a movable block extending to the outside of the support rod is slidably connected in the sliding groove. An installation plate is welded to the side of the movable block located outside the support rod, and the backrest is fixedly installed on the side of the installation plate away from the movable block.

[0012] As a preferred embodiment of the present invention, the top surface of the movable block located in the groove of the support rod is provided with a threaded hole in the vertical direction, and a matching first threaded rod is provided in the threaded hole. The top end of the first threaded rod passes through and extends to the upper part of the support rod, and a second handwheel is installed at one end of the first threaded rod located at the upper part of the support rod. The bottom end of the first threaded rod is rotatably connected to the top surface of the base plate.

[0013] As a preferred embodiment of the present invention, armrests are fixedly installed on both sides of the top surface of the chair seat, and four sets of casters are evenly installed on the bottom surface of the base plate.

[0014] Compared with the prior art, the present invention provides an anti-myopia chair with the following beneficial effects:

[0015] 1. The anti-myopia seat, by setting a first threaded rod, a moving block and a mounting plate, etc., can rotate a second handwheel, which can drive the first threaded rod to rotate, thereby enabling the moving block to move, and further enabling the backrest to move through the mounting plate, thereby achieving the purpose of adjusting the height of the backrest;

[0016] 2. This anti-myopia seat, by setting a worm gear, a worm shaft and a third threaded rod, can rotate a first handwheel, which can drive the worm shaft to rotate, and then drive the third threaded rod to rotate through the worm gear. At this time, under the action of the threaded tube, the third threaded rod can be moved, thereby realizing the purpose of adjusting the height of the seat through the connecting plate;

[0017] 3. This anti-myopia chair, by setting a second threaded rod, a lifting plate, and a support plate, etc., can rotate a rotating wheel, which can rotate the second threaded rod, and then, under the action of a guide rod, can move the lifting plate, which in turn can drive the support plate to move through a connecting block. The height of the support plate can be adjusted according to the user's height, so as to meet the needs of people of different heights. At this time, the user's chin can be supported on the support plate, thereby preventing the user from lying on the table and achieving the purpose of preventing myopia. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a side sectional view of the support rod structure of the present invention;

[0020] Figure 3 This is a cross-sectional structural diagram of the base plate, movable cylinder, fixed cylinder, and threaded pipe of the present invention.

[0021] Figure 4 This is a partial cross-sectional view of the base plate of the present invention;

[0022] Figure 5 This is a partial cross-sectional view of the rotating plate and the limiting rod of the present invention.

[0023] Reference numerals: 1. Base plate; 2. Caster wheel; 3. Stop block; 4. First handwheel; 5. Worm gear; 6. Support rod; 7. Rotating rod; 8. Armrest; 9. Rotating wheel; 10. Guide rod; 11. Lifting plate; 12. Backrest; 13. Second handwheel; 14. First threaded rod; 15. Support plate; 16. Connecting block; 17. Second threaded rod; 18. Rotating plate; 19. Seat; 20. Limiting rod; 21. Moving cylinder; 22. Fixed cylinder; 23. Moving block; 24. Mounting plate; 25. Threaded pipe; 26. Third threaded rod; 27. Turbine; 28. Connecting plate; 29. ​​Movable rod; 30. Pressing plate; 31. Locking block; 32. First spring; 33. Second spring. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example 1:

[0026] Please see Figure 1 and Figure 3 The system includes a base plate 1, with a threaded tube 25 welded to its top surface. A matching third threaded rod 26 is installed inside the threaded tube 25, allowing rotation within the tube. A connecting plate 28 is rotatably attached to the top of the third threaded rod 26, and a chair seat 19 is fixedly mounted on the top surface of the connecting plate 28. When the third threaded rod 26 rotates, the chair seat 19 can move up and down via the connecting plate 28, allowing height adjustment. A rotating rod 7 is rotatably connected to the left side of the top surface of the chair seat 19, and a rotating plate 18 is mounted on the top of the rotating rod 7, allowing the rotating plate 18 to rotate to one side. A threaded hole is provided at the center of the top of the plate 18, and a matching second threaded rod 17 is provided in the threaded hole. The top end of the second threaded rod 17 is rotatably connected to a lifting plate 11. When the second threaded rod 17 rotates, the lifting plate 11 can be raised and lowered. A connecting block 16 is welded to the top surface of the lifting plate 11, and a support plate 15 is welded to one side of the connecting block 16. When the lifting plate 11 is raised and lowered, the support plate 15 can be raised and lowered through the connecting block 16, and the height of the support plate 15 can be adjusted. A support rod 6 is welded to one side of the top surface of the base plate 1, and a backrest 12 is slidably connected to the side of the support rod 6 near the seat 19.

[0027] Example 2:

[0028] Please see Figure 1 , Figure 4 and Figure 5The bottom surface of the lifting plate 11 is welded with guide rods 10 on both sides, extending through and to the lower part of the rotating plate 18, to guide and prevent the lifting plate 11 from rotating when the second threaded rod 17 rotates. The support plate 15 is arc-shaped on the side near the backrest 12, so that the user's chin can rest on the support plate 15. A limit rod 20 is installed on the bottom surface of the rotating plate 18 on the side away from the rotating rod 7 to limit and prevent the rotating plate 18 from shifting under the action of external force. The seat 1 A stop block 3 is welded to the right side of the top surface of seat 9, and the stop block 3 is concave. The lower part of the limiting rod 20 can move into the concave shape formed by the stop block 3. A cavity is opened inside the right side of the seat 19, and a first spring 32 is fixedly installed on the bottom inner wall of the cavity. A locking block 31 is fixedly installed at the top of the first spring 32, penetrating and extending to the upper part of the seat 19. A locking groove matching the locking block 31 is opened at the bottom of the limiting rod 20. The locking block 31 can be locked at the bottom of the limiting rod 20, which can limit the limiting rod 20. The locking block 31 is inclined on one side, which facilitates the limiting rod 20 to press the locking block 31, so that the locking block 31 can be locked in the slot opened at the bottom of the limiting rod 20 under the action of the first spring 32. The top of the limiting rod 20 has a through hole that extends through to the bottom of the limiting rod 20, and a movable rod 29 that extends through to the top of the rotating plate 18 is placed in the through hole. A pressing plate 30 is fixedly installed at the top of the movable rod 29. Pressing the pressing plate 30 can move the movable rod 29 downward. The movable rod 29 can press the locking block 31, allowing the locking block 31 to move out of the locking groove at the bottom of the limiting rod 20. A cavity is provided at the connection between the rotating plate 18 and the limiting rod 20, and a second spring 33 is fixedly installed on the upper outer ring of the movable rod 29 in the cavity. The bottom end of the second spring 33 is fixedly connected to the bottom inner wall of the cavity. A rotating wheel 9 is installed on the lower end of the second threaded rod 17. Rotating the rotating wheel 9 can make the second threaded rod 17 rotate.

[0029] Example 3:

[0030] Please see Figure 1 and Figure 3The upper outer ring of the third threaded rod 26 is equipped with a turbine 27. The bottom surface of the connecting plate 28 is welded with a movable cylinder 21. A worm 5 is rotatably connected to one side of the inner wall of the movable cylinder 21, extending through and to the outside of the movable cylinder 21. The worm 5 and the turbine 27 mesh with each other. A first handwheel 4 is installed at the end of the worm 5 located outside the movable cylinder 21. Rotating the first handwheel 4 can drive the worm 5 to rotate, which in turn can drive the third threaded rod 26 to rotate through the turbine 27. At this time, the third threaded rod 26 can be moved under the action of the threaded tube 25. The top surface of the base plate 1 and inside the threaded tube 25 are provided with a threaded hole that matches the threaded tube 25. A fixed cylinder 22 is welded to the top surface of the base plate 1. The lower outer ring of the movable cylinder 21 is located inside the inner ring of the fixed cylinder 22, and the threaded tube 25 is located inside the fixed cylinder 22. The movable cylinder 21 has a guiding function and can move up and down inside the fixed cylinder 22.

[0031] Example 4:

[0032] Please see Figure 1 Figure 2 A groove is provided on the side of the support rod 6 near the seat 19, and a movable block 23 extending to the outside of the support rod 6 is slidably connected in the groove. A mounting plate 24 is welded to the side of the movable block 23 outside the support rod 6. The backrest 12 is fixedly mounted on the side of the mounting plate 24 away from the movable block 23. A threaded hole is provided vertically on the top surface of the movable block 23 in the groove of the support rod 6, and a matching first threaded rod 14 is provided in the threaded hole. The top end of the first threaded rod 14 passes through and extends to A second handwheel 13 is installed on the upper part of the support rod 6, and at one end of the first threaded rod 14 located on the upper part of the support rod 6. The second handwheel 13 can be rotated to drive the first threaded rod 14 to rotate, thereby enabling the moving block 23 to move. Furthermore, the backrest 12 can be moved through the mounting plate 24. The bottom end of the first threaded rod 14 is rotatably connected to the top surface of the base plate 1. Armrests 8 are fixedly installed on both sides of the top surface of the seat 19. Four sets of universal wheels 2 are evenly installed on the bottom surface of the base plate 1 for easy movement.

[0033] The working principle and usage process of this invention are as follows: First, the universal wheels 2 installed at the bottom of the base plate 1 can be used to move the base plate 1 to the corresponding location. Then, the second handwheel 13 can be rotated to drive the first threaded rod 14 to rotate, thereby moving the moving block 23. Furthermore, the mounting plate 24 can be used to move the backrest 12, thereby achieving the purpose of adjusting the height of the backrest 12. The first handwheel 4 can be rotated to drive the worm gear 5 to rotate, thereby driving the third threaded rod 26 to rotate through the worm gear 27. At this time, under the action of the threaded tube 25, the third threaded rod 26 can be moved, thereby achieving the purpose of adjusting the height of the seat 19 through the connecting plate 28. Then, the pressing plate 30 can be pressed, which can cause the movable rod 29 to move downward, allowing the movable rod 29 to press the locking block 31, causing the locking block 31 to move out of the locking groove at the bottom of the limiting rod 20. Then, the rotating plate 18 can be pushed to move the rotating plate 18 to the position shown in the attached figure. Figure 4 As shown, students and others can sit on the seat 19. The rotating plate 18 can then be returned to its original position. At this time, the locking block 31 can be locked in the slot at the bottom of the limiting rod 20 under the action of the first spring 32. Then, the rotating wheel 9 can be rotated, which will cause the second threaded rod 17 to rotate. In turn, under the action of the guide rod 10, the lifting plate 11 can be moved, which can then drive the support plate 15 to move through the connecting block 16. The height of the support plate 15 can be adjusted according to the user's height to meet the needs of people of different heights. At this time, the user's chin can be rested on the support plate 15, which can prevent the user from lying on the table and achieve the purpose of preventing myopia.

[0034] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An anti-myopia seat, comprising a base plate (1), characterized in that: The top surface of the base plate (1) is welded with a threaded tube (25), and a matching third threaded rod (26) is provided inside the threaded tube (25). A connecting plate (28) is rotatably attached to the top of the third threaded rod (26), and a chair seat (19) is fixedly installed on the top surface of the connecting plate (28). A rotating rod (7) is rotatably connected to the left side of the top surface of the chair seat (19), and a rotating plate (18) is installed at the top of the rotating rod (7). The top of the rotating plate (18) is... A threaded hole is provided in the center, and a matching second threaded rod (17) is provided in the threaded hole. The top end of the second threaded rod (17) is rotatably connected to a lifting plate (11). A connecting block (16) is welded to the top surface of the lifting plate (11), and a support plate (15) is welded to one side of the connecting block (16). A support rod (6) is welded to one side of the top surface of the base plate (1), and a backrest (12) is slidably connected to the side of the support rod (6) near the seat (19).

2. The anti-myopia chair according to claim 1, characterized in that: The bottom surface of the lifting plate (11) is welded with guide rods (10) that penetrate and extend to the lower part of the rotating plate (18). The support plate (15) is arranged in an arc shape on the side near the backrest (12). A limit rod (20) is installed on the bottom surface of the rotating plate (18) away from the rotating rod (7).

3. The anti-myopia chair according to claim 2, characterized in that: A stop (3) is welded to the right side of the top surface of the seat (19), and the stop (3) is concave. A cavity is opened inside the right side of the seat (19), and a first spring (32) is fixedly installed on the bottom inner wall of the cavity. A locking block (31) is fixedly installed at the top of the first spring (32) and extends through and to the upper part of the seat (19). A slot matching the locking block (31) is opened at the bottom of the limiting rod (20), and one side of the locking block (31) is inclined.

4. The anti-myopia chair according to claim 3, characterized in that: The top of the limiting rod (20) has a through hole that extends through to the bottom of the limiting rod (20), and a movable rod (29) that extends through to the top of the rotating plate (18) is placed in the through hole, and a pressing plate (30) is fixedly installed at the top of the movable rod (29).

5. The anti-myopia chair according to claim 1, characterized in that: A cavity is provided at the connection between the rotating plate (18) and the limiting rod (20), and a second spring (33) is fixedly installed on the upper outer ring of the cavity. The bottom end of the second spring (33) is fixedly connected to the bottom inner wall of the cavity. A rotating wheel (9) is installed on the lower end of the second threaded rod (17) located on the rotating plate (18).

6. The anti-myopia chair according to claim 1, characterized in that: The upper outer ring of the third threaded rod (26) is equipped with a turbine (27), the bottom surface of the connecting plate (28) is welded with a movable cylinder (21), and a worm (5) is rotatably connected to one side inner wall of the movable cylinder (21) and extends through and to the outside of the movable cylinder (21), and the worm (5) and the turbine (27) mesh with each other. The first handwheel (4) is installed at one end of the worm (5) located outside the movable cylinder (21).

7. The anti-myopia chair according to claim 6, characterized in that: The top surface of the base plate (1) and inside the threaded tube (25) are provided with a threaded hole that matches the threaded tube (25). A fixed cylinder (22) is welded to the top surface of the base plate (1). The lower outer ring of the movable cylinder (21) is located inside the inner ring of the fixed cylinder (22), and the threaded tube (25) is located inside the fixed cylinder (22).

8. The anti-myopia chair according to claim 1, characterized in that: The support rod (6) has a groove on the side near the seat (19), and a movable block (23) extending to the outside of the support rod (6) is slidably connected in the groove. The movable block (23) is welded to the side outside the support rod (6) with a mounting plate (24). The backrest (12) is fixedly installed with the mounting plate (24) away from the movable block (23).

9. The anti-myopia chair according to claim 8, characterized in that: The movable block (23) has a threaded hole in the vertical direction on the top surface of the groove opened in the support rod (6), and a matching first threaded rod (14) is provided in the threaded hole. The top end of the first threaded rod (14) passes through and extends to the upper part of the support rod (6), and a second handwheel (13) is installed at one end of the first threaded rod (14) located on the upper part of the support rod (6). The bottom end of the first threaded rod (14) is rotatably connected to the top surface of the base plate (1).

10. The anti-myopia chair according to claim 1, characterized in that: Armrests (8) are fixedly installed on both sides of the top surface of the seat (19), and four sets of casters (2) are evenly installed on the bottom surface of the base plate (1).

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