Easily adjustable high stability chair

Abstract

The present application belongs to the technical field of chairs, and discloses an easily-adjusted high-stability chair, which comprises a chair, an artificial rotating handle, a rotating rod, a gear two, a meshing gear one, a toothed ring, a backrest, a horizontal plate, a vertical plate, a sliding plate, a U-shaped plate, a toothed plate, a gear three, a threaded resistance plate, a gas bag, a T-shaped plate, a screw rod, a cylindrical plate, an inner wheel disc, an outer wheel disc, a guide rod and a spring.

Description

Technical Field

[0001] This invention belongs to the field of chair technology, specifically an easily adjustable and highly stable chair. Background Technology

[0002] Chairs are common in daily life. A chair is a seat with a backrest, and sometimes armrests, providing a place for people to sit. At lunchtime, some people can only rest on their desks or in office chairs for a while. However, some existing office chairs do not have adjustable backrests. Some chairs are prone to tilting suddenly when people adjust the backrest, which may cause back injuries or other accidents. It is not easy to adjust the backrest to the required tilt angle. On the other hand, when adjusting the backrest, the stability of the chair will decrease, and people can easily lose their center of gravity and become unstable, which can easily lead to accidents such as falling over. Summary of the Invention

[0003] To address the problems mentioned in the background section, the present invention provides an easily adjustable and highly stable chair.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] An easily adjustable and highly stable chair includes a chair with a backrest, multiple chair legs fixedly connected to the bottom of the chair, each chair leg having multiple rectangular slots through it near the bottom, and a cylindrical slot through it in the inner top wall of one side of the chair. The chair also includes:

[0006] An adjustment section is located inside the chair. The adjustment section includes a towel plate, a first engagement structure on the bottom of the towel plate, a rotating structure on the first engagement structure, a pressing and tilting structure on one side of the chair back, a limiting sliding structure on the bottom of the pressing and tilting structure, and a plurality of second engagement structures on the bottom of the limiting sliding structure. Each second engagement structure is provided with a threaded extrusion structure.

[0007] The stabilizing part is located inside the chair leg. The stabilizing part includes multiple airbags. Each airbag has a threaded rotating structure at its bottom, a limiting movable structure on each threaded rotating structure, and multiple telescopic support structures on each limiting movable structure.

[0008] Preferably, the first meshing structure is composed of a toothed ring, a first gear, and a second gear. The first gear is meshed with the inner wall of the toothed ring and the second gear, respectively. The bottom of the outer wall of the toothed ring is fixedly connected to the inner wall of the bottom of the cylindrical groove. The outer walls of both ends of the first gear are fixedly connected to the bottom of the inverted plate. The rotating rod can drive the second gear and the first gear to rotate within the toothed ring, thereby causing the inverted plate to tilt.

[0009] Preferably, the rotating structure consists of a rotating rod and a handle fixedly connected to drive the rotating rod to rotate. One end of the rotating rod is fixedly connected to the second gear and is rotatably connected to one end of the chair.

[0010] Preferably, the anti-suppression tilting structure consists of a horizontal plate, a vertical plate, and a Z-shaped limiting plate that is rotatably engaged with the center of the vertical plate. The other end of the Z-shaped limiting plate is fixedly connected to the outer wall of one end of the chair. The tilting and warping of the vertical plate will push the sliding plate, the U-shaped plate, and the toothed plate to move synchronously.

[0011] Preferably, the limiting sliding structure consists of a sliding plate, a limiting block, and a U-shaped plate fixedly connected to one end of the sliding plate. The sliding plate and the limiting block are slidably connected. The upper and lower sides of the vertical plate are fixedly connected to the horizontal plate and one end of the sliding plate, respectively. The top of the limiting block is fixedly connected to the bottom of the chair.

[0012] Preferably, the second meshing structure consists of a toothed plate and a gear meshing with the toothed plate, with the top of the toothed plate and the bottom of the U-shaped plate fixedly connected.

[0013] Preferably, the threaded extrusion structure is a threaded abutment plate, which is threadedly connected to the gear three, and is rotatably connected through one side to the side of the chair leg.

[0014] Preferably, the threaded rotating structure consists of a T-shaped plate and a screw threaded into the T-shaped plate. A cylindrical plate is threaded onto the screw. Two springs are fixedly connected between the T-shaped plate and the cylindrical plate. The top of the T-shaped plate is fixedly connected to the bottom of the airbag. The threaded abutment plate will press against the airbag, causing the airbag to move downward and push the T-shaped plate downward, thereby driving the screw to rotate. The springs will provide a smooth buffering effect during the overall downward movement.

[0015] Preferably, the limiting movable structure consists of an inner wheel and an outer wheel that is movably sleeved on the outer wall of the inner wheel. The outer wall of the outer wheel has multiple arched grooves, and two guide rods are rotatably connected to the outer wheel. The top of each guide rod is fixedly connected to the bottom of the cylindrical plate.

[0016] Preferably, the telescopic support structure consists of a support rod and a rubber pad fixedly connected to the bottom of the support rod. The support rod is hinged to the inner wall of the arched groove near the top, and the outer wall of the support rod is in close contact with the inner wall of the rectangular groove. When the inner and outer wheel discs move downward, they will drive the support rod and the rubber pad to expand, thereby increasing the support friction between the chair legs and the ground.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] The manual rotation of the handle drives the rotating rod and gear two to rotate, causing gear one to rotate within the toothed ring. This tilts the backrest, causing the horizontal plate to press against the vertical plate, resulting in tilting and warping. This pushes the sliding plate, which in turn moves the U-shaped plate and toothed plate synchronously, simultaneously engaging gear three and rotating the threaded abutment plate within the chair legs. This compresses the airbag, causing it to move downwards and push the T-shaped plate downwards. The screw rotates, simultaneously moving the cylindrical plate, inner wheel, and outer wheel downwards. The guide rod limits the downward movement of the cylindrical plate, and the spring provides a smooth and cushioning effect during the overall downward movement. This causes the support rod and rubber pad to expand, increasing the friction between the chair legs and the ground. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention;

[0021] Figure 3 This is a partial structural schematic diagram of the adjustment part of the present invention (one of the schematic diagrams);

[0022] Figure 4 This is a partial structural schematic diagram of the adjustment part of the present invention (second part);

[0023] Figure 5 This is a schematic diagram of the partially disassembled structure of the adjustment part of the present invention (third one);

[0024] Figure 6 This is a partial structural diagram of the stabilizing part of the present invention (one of the diagrams);

[0025] Figure 7 This is a partial structural diagram of the stabilizing part of the present invention (second part);

[0026] Figure 8 This is a partial structural diagram of the stabilizing part of the present invention (third part).

[0027] In the picture:

[0028] 1. Chair; 11. Chair legs;

[0029] 2. Adjustment section; 21. Inverted plate; 22. Gear ring; 23. Gear 1; 24. Gear 2; 25. Rotating rod; 26. Rotating handle; 27. Horizontal plate; 28. Vertical plate; 29. ​​Z-shaped limiting plate; 230. Slide plate; 231. Limiting block; 232. U-shaped plate; 233. Gear plate; 234. Gear 3; 235. Threaded abutment plate;

[0030] 3. Stabilizing part; 31. Airbag; 32. T-shaped plate; 33. Screw; 34. Cylindrical plate; 35. Spring; 36. Inner wheel; 37. Outer wheel; 38. Support rod; 39. Rubber pad. Detailed Implementation

[0031] 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.

[0032] like Figures 1 to 8 As shown, the present invention provides an easily adjustable and highly stable chair, including a chair 1, a backrest on the chair 1, and multiple chair legs 11 fixedly connected to the bottom of the chair 1. Each chair leg 11 has multiple rectangular grooves through it near the bottom, and a cylindrical groove through it is formed in the inner top wall of one side of the chair 1. The chair also includes:

[0033] Adjustment part 2 is located inside chair 1. Adjustment part 2 includes a towel plate 21. The bottom of towel plate 21 is provided with a first engagement structure. The first engagement structure is provided with a rotating structure. The outer wall of one side of the chair back is provided with a pressing and tilting structure. The bottom of the pressing and tilting structure is provided with a limiting sliding structure. The bottom of the limiting sliding structure is provided with multiple second engagement structures. Each second engagement structure is provided with a threaded extrusion structure.

[0034] The first meshing structure consists of a toothed ring 22, a first gear 23, and a second gear 24. The first gear 23 meshes with the inner wall of the toothed ring 22 and the second gear 24 respectively. The bottom of the outer wall of the toothed ring 22 is fixedly connected to the inner wall of the bottom of the cylindrical groove. The outer walls of both ends of the first gear 23 are fixedly connected to the bottom of the inverted towel plate 21. The rotating structure consists of a rotating rod 25 and a rotating handle 26 fixedly connected to drive the rotating rod 25 to rotate. One end of the rotating rod 25 is fixedly connected to the second gear 24 and is rotatably connected to one end of the chair 1.

[0035] Using the above solution: manually rotating the handle 26 drives the rotating rod 25 and the gear 24 on the rotating rod 25 to rotate, which drives the meshing gear 23 to rotate in the inner ring of the toothed ring 22, causing the inverted panel 21 fixedly connected to the inner wall of the chair back to tilt, thereby easily achieving the angle tilt of the chair back, and at the same time achieving the meshing limit effect during the meshing rotation tilting process.

[0036] The anti-pressure tilting structure consists of a horizontal plate 27, a vertical plate 28, and a Z-shaped limiting plate 29 that is rotatably engaged with the center of the vertical plate 28. The other end of the Z-shaped limiting plate 29 is fixedly connected to the outer wall of one end of the chair 1. The limiting sliding structure consists of a sliding plate 230, a limiting block 231, and a U-shaped plate 232 fixedly connected to one end of the sliding plate 230. The sliding plate 230 and the limiting block 231 are slidably connected. The upper and lower sides of the vertical plate 28 are fixedly connected to one end of the horizontal plate 27 and the sliding plate 230, respectively. The top of the limiting block 231 is fixedly connected to the bottom of the chair 1. The second meshing structure consists of a toothed plate 233 and a gear 234 meshing with the toothed plate 233. The top of the toothed plate 233 is fixedly connected to the bottom of the U-shaped plate 232.

[0037] Using the above solution: the tilt of the chair back will cause the fixedly connected horizontal plate 27 to press against the upper part of the vertical plate 28, causing it to tilt and warp, thereby pushing the slide plate 230 to move. The moving slide plate 230 will drive the U-shaped plate 232 and the toothed plate 233 to move synchronously, which will drive the gear 234 to mesh and rotate on the toothed plate 233, and drive the threaded abutment plate 235 to rotate and move within the chair leg 11.

[0038] The stabilizing part 3 is located inside the chair leg 11. The stabilizing part 3 includes multiple airbags 31. Each airbag 31 has a threaded rotating structure at its bottom. Each threaded rotating structure has a limiting movable structure. Each limiting movable structure has multiple telescopic support structures.

[0039] The threaded extrusion structure consists of a threaded abutment plate 235, which is threadedly connected to a gear 234, and is rotatably connected to one side of the chair leg 11. The threaded rotation structure consists of a T-shaped plate 32 and a screw 33 threadedly connected to the T-shaped plate 32. A cylindrical plate 34 is threadedly connected to the screw 33. Two springs 35 are fixedly connected between the T-shaped plate 32 and the cylindrical plate 34. The top of the T-shaped plate 32 is fixedly connected to the bottom of the airbag 31. The limiting and movable structure consists of an inner wheel 3. The structure consists of an outer wheel 37 that is movably fitted onto the outer wall of the inner wheel 36. The outer wall of the outer wheel 37 has multiple arched grooves. Two guide rods are rotatably connected to the outer wheel 37. The top of each guide rod is fixedly connected to the bottom of the cylindrical plate 34. The telescopic support structure consists of a support rod 38 and a rubber pad 39 fixedly connected to the bottom of the support rod 38. The support rod 38 is hinged to the inner wall of the arched groove near the top. The outer wall of the support rod 38 is in close contact with the inner wall of the rectangular groove.

[0040] Using the above scheme: the rotating threaded abutment 235 will squeeze the airbag 31, causing the airbag 31 to move downward and push the T-shaped plate 32 downward, thereby driving the screw 33 to rotate. The rotating screw 33 will simultaneously drive the cylindrical plate 34, the inner wheel 36, and the outer wheel 37 to move downward. The guide rod connecting the outer wheel 37 and the cylindrical plate 34 will limit the downward movement of the cylindrical plate 34. The spring 35 will also play a smooth buffering role in the downward movement process, thereby driving the support rod 38 and the rubber pad 39 to expand, increasing the supporting friction between the chair leg 11 and the ground.

[0041] The working principle and usage process of this invention are as follows: First, manually rotating the handle 26 drives the rotating rod 25 and the gear 24 on the rotating rod 25 to rotate, causing the meshing gear 23 to rotate within the inner ring of the toothed ring 22. This causes the inverted plate 21, which is fixedly connected to the inner wall of the chair back, to tilt, thereby easily achieving an angle tilt of the chair back. At the same time, during the meshing rotation and tilting process, a meshing limit effect is achieved. The tilting of the chair back will cause the fixedly connected horizontal plate 27 to press against the upper half of the vertical plate 28, causing it to tilt and warp. This pushes the sliding plate 230 to move. The moving sliding plate 230 will drive the U-shaped plate 232 and the toothed plate 233 to move synchronously, thereby driving the toothed plate 232 to move synchronously. Wheel 234 meshes and rotates on toothed plate 233, causing threaded abutment 235 to rotate and move within chair leg 11. The rotating threaded abutment 235 squeezes airbag 31, causing airbag 31 to move downward and push T-shaped plate 32 downward, thereby driving screw 33 to rotate. The rotating screw 33 simultaneously drives cylindrical plate 34, inner wheel 36, and outer wheel 37 to move downward. The guide rod connecting outer wheel 37 and cylindrical plate 34 limits the downward movement of cylindrical plate 34. Spring 35 also provides a smooth buffering effect during the overall downward movement, thereby causing support rod 38 and rubber pad 39 to expand, increasing the supporting friction between chair leg 11 and the ground.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An easily adjustable and highly stable chair, comprising a chair (1), characterized in that: The chair (1) is provided with a backrest, and multiple chair legs (11) are fixedly connected to the bottom of the chair (1). Each chair leg (11) has multiple rectangular grooves through it near the bottom. A cylindrical groove is through it in the top inner wall of one side of the chair (1). The chair (1) also includes: Adjustment part (2), the adjustment part (2) is located inside the chair (1), the adjustment part (2) includes a towel plate (21), the bottom of the towel plate (21) is provided with a first engagement structure, the first engagement structure is provided with a rotating structure, the outer wall of one side of the chair back is provided with a pressing tilting structure, the bottom of the pressing tilting structure is provided with a limiting sliding structure, the bottom of the limiting sliding structure is provided with a plurality of second engagement structures, each of the second engagement structures is provided with a threaded extrusion structure; The stabilizing part (3) is located inside the chair leg (11). The stabilizing part (3) includes multiple airbags (31). Each airbag (31) has a threaded rotating structure at its bottom, a limiting movable structure on each threaded rotating structure, and multiple telescopic support structures on each limiting movable structure. The threaded extrusion structure is a threaded abutment plate (235), which is threadedly connected to the gear three (234), and is rotatably connected to one side of the seat leg (11).

2. The easily adjustable and highly stable chair according to claim 1, characterized in that: The first meshing structure is composed of a toothed ring (22), a first gear (23), and a second gear (24). The first gear (23) meshes with the inner wall of the toothed ring (22) and the second gear (24) respectively. The bottom of the outer wall of the toothed ring (22) is fixedly connected to the inner wall of the bottom of the cylindrical groove. The outer walls of both ends of the first gear (23) are fixedly connected to the bottom of the inverted plate (21).

3. The easily adjustable and highly stable chair according to claim 2, characterized in that: The rotating structure consists of a rotating rod (25) and a rotating handle (26) fixedly connected to drive the rotating rod (25) to rotate. One end of the rotating rod (25) is fixedly connected to the gear two (24) and is rotatably connected to one end of the chair (1).

4. The easily adjustable and highly stable chair according to claim 1, characterized in that: The anti-pressure tilting structure consists of a horizontal plate (27), a vertical plate (28), and a Z-shaped limiting plate (29) that is rotatably engaged with the center position of the vertical plate (28). The other end of the Z-shaped limiting plate (29) is fixedly connected to the outer wall of one end of the chair (1).

5. The easily adjustable and highly stable chair according to claim 4, characterized in that: The limiting sliding structure consists of a sliding plate (230), a limiting block (231), and a U-shaped plate (232) fixedly connected to one end of the sliding plate (230). The sliding plate (230) and the limiting block (231) are slidably connected. The upper and lower sides of the vertical plate (28) are fixedly connected to the horizontal plate (27) and one end of the sliding plate (230), respectively. The top of the limiting block (231) is fixedly connected to the bottom of the chair (1).

6. The easily adjustable and highly stable chair according to claim 5, characterized in that: The second meshing structure consists of a toothed plate (233) and a gear three (234) meshing with the toothed plate (233), with the top of the toothed plate (233) and the bottom of the U-shaped plate (232) fixedly connected.

7. The easily adjustable and highly stable chair according to claim 1, characterized in that: The threaded rotating structure consists of a T-shaped plate (32) and a screw (33) threaded into the T-shaped plate (32). A cylindrical plate (34) is threaded onto the screw (33). Two springs (35) are fixedly connected between the T-shaped plate (32) and the cylindrical plate (34). The top of the T-shaped plate (32) is fixedly connected to the bottom of the airbag (31).

8. The easily adjustable and highly stable chair according to claim 1, characterized in that: The limiting movable structure consists of an inner wheel (36) and an outer wheel (37) movably sleeved on the outer wall of the inner wheel (36). The outer wall of the outer wheel (37) is provided with multiple arched grooves. Two guide rods are rotatably connected to the outer wheel (37). The top of each guide rod is fixedly connected to the bottom of the cylindrical plate (34).

9. The easily adjustable and highly stable chair according to claim 1, characterized in that: The telescopic support structure consists of a support rod (38) and a rubber pad (39) fixedly connected to the bottom of the support rod (38). The support rod (38) is hinged to the inner wall of the arched groove near the top, and the outer wall of the support rod (38) is in close contact with the inner wall of the rectangular groove.

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