Ergonomic chair capable of being stably supported

Abstract

The utility model discloses an ergonomic chair capable of being stably supported. The ergonomic chair comprises a footstand provided with a plurality of supporting legs at equal intervals; the air pressure rod is arranged in the middle of the footstand, the top of the air pressure rod is provided with a support part, and the top of the support part is provided with a cushion and a backrest; the chair has the beneficial effects that the universal wheels and the movable supporting part are arranged, so that the chair can be moved and fixed according to needs, and when the position of the chair needs to be fixed, the height of the supporting seat can be adjusted by rotating the threaded pipe, so that the chair can be conveniently fixed, and the chair is convenient to use. The chair is in contact with the ground and jacks up the universal wheels, so that the chair is stably fixed in situ; through the combined design of the metal elastic piece, the inserting rod and the threaded sleeve, when the chair does not need to be moved, the inserting rod can be pressed through the threaded sleeve, so that the supporting screw rod and the threaded pipe are prevented from loosening, the supporting screw rod and the threaded pipe are conveniently and stably fixed in situ, and the situation that the gravity center of the chair is unstable due to different heights is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of ergonomic chairs, in particular to an ergonomic chair with stable support. Background Art

[0002] An ergonomic chair is designed according to ergonomic principles to provide optimal support and comfort. It's particularly suitable for those who spend long periods at a desk or computer. The design of an ergonomic chair takes into account the natural curves of the human body, particularly the shape of the spine and pelvis. Through adjustments to the backrest, seat cushion, and armrests, the chair can be adjusted to fit the user's body contours, providing personalized support.

[0003] Most existing ergonomic chairs are equipped with rollers at the bottom, which can be moved at will, but cannot be fixed in a specified position as needed. Some chairs are fixed by self-locking wheels, but the fixation is unstable and can be caused to move by accidental touch or external force. Sudden movement during use increases the risk of falls or injuries to users. Due to its instability, the chair position needs to be frequently adjusted to maintain stability, which interrupts the continuity of work or study and reduces work efficiency. Utility Model Content

[0004] The purpose of the present invention is to provide an ergonomic chair with stable support to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a stable and supportive ergonomic chair, comprising:

[0006] A foot base with multiple supporting legs arranged at equal intervals;

[0007] A gas pressure rod is placed in the middle of the footrest, a bracket portion is installed on the top of the gas pressure rod, and a seat cushion and a backrest are installed on the top of the support portion;

[0008] A movable support part is placed at the bottom of the foot seat, and the movable support part includes a universal wheel rotatably placed at the end of the support leg and a fixed part, and the fixed part includes a support screw fixed to the bottom of the support leg, and a support seat is provided below the support screw, and the top of the support seat is fixed with a threaded tube threadedly connected to the support screw for adjusting the height of the support seat, and an insertion rod is slidably installed on the outer side of the threaded tube to prevent the threaded tube from loosening.

[0009] Preferably, the bracket portion includes a support frame fixedly connected to the top of the pneumatic rod, the top of the support frame is fixedly connected to a support beam, and both ends of the support beam are fixedly connected to a bottom support frame 5 and a backrest frame.

[0010] Preferably, a seat cushion is fixedly connected to the top of the bottom support frame, a backrest is fixedly connected to the outer side of the backrest frame, and an armrest is fixedly connected to the side of the seat cushion.

[0011] Preferably, a metal spring is fixed to the outside of the threaded tube, the metal spring is fixed to the insertion rod, the metal spring, the insertion rod and the threaded tube form a right triangle, and the metal spring is located on the hypotenuse of the right triangle.

[0012] Preferably, the outer side of the threaded pipe is threadedly connected to a threaded sleeve, and the interior of the top of the threaded sleeve is provided with a chamfered structure.

[0013] Preferably, the bottom of the support screw is fixedly connected to a limit plate, and a positioning hole is provided on the outer side of the limit plate. When the support screw moves upward to the limit position, the positioning hole corresponds to the position of the insertion rod.

[0014] Preferably, the support seat is a truncated cone structure, and the bottom of the support seat is fixedly connected to a bottom pad.

[0015] Compared with the prior art, the present invention has the following advantages: by providing universal wheels and a movable support portion, the chair can be moved and fixed as needed. When the chair needs to be fixed, the height of the support base can be adjusted by rotating the threaded tube, so that it contacts the ground and lifts the universal wheels, thereby stably fixing the chair in place. The combined design of the metal spring, the insertion rod, and the threaded sleeve allows the insertion rod to be pressed by the threaded sleeve when the chair does not need to be moved, thereby preventing the support screw and the threaded sleeve from loosening, facilitating a secure fixation in place and preventing the center of gravity of the chair from being unstable due to height differences. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic structural diagram of the support frame of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the support seat of the utility model located at the bottom;

[0019] Figure 4 This is a schematic diagram of the structure of the utility model with the support seat located at the top;

[0020] Figure 5 This is a schematic diagram of the structure of the metal dome of the utility model;

[0021] Figure 6 This is a structural diagram of the positioning hole of the utility model.

[0022] In the figure: 1. Foot; 2. Pneumatic rod; 3. Support frame; 4. Support beam; 5. Bottom support frame; 6. Seat cushion; 7. Backrest frame; 8. Backrest; 9. Armrest; 10. Universal wheel; 11. Support screw; 12. Threaded pipe; 13. Threaded sleeve; 14. Support seat; 15. Bottom pad; 16. Metal shrapnel; 17. Insert rod; 18. Limit plate; 19. Positioning hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1 、 2 As shown in Figures 3, 4, 5 and 6, the utility model provides a technical solution: a stably supported ergonomic chair, comprising: a foot base 1 with a plurality of supporting legs fixed at equal intervals; a pneumatic rod 2 fixed to the middle of the foot base 1, a bracket portion installed on the top of the pneumatic rod 2, the pneumatic rod mainly consisting of a closed cylinder, a piston in the cylinder and a piston rod extending to the outside, and when working, a through hole is provided inside the piston so that the gas pressure at both ends of the piston is equal. However, the cross-sectional areas on both sides of the piston are different, one end is connected to the piston rod and the other end is not. Under the action of gas pressure, pressure will be generated towards the side with a smaller cross-sectional area, that is, the elastic force of the pneumatic rod. When a person sits on it and applies pressure to the lifting shaft, the lifting shaft will descend smoothly with a uniform speed and can drop to the lowest point. When no external force is applied to the lifting shaft, the lifting shaft will rise back to the highest point under the action of air pressure, and a seat cushion 6 and a backrest 8 are installed on the top of the support part; the movable support part is placed at the bottom of the footrest 1, and the movable support part includes a universal wheel 10 rotatably placed at the end of the support leg and a fixed part, and the fixed part includes a support screw 11 fixed to the bottom of the support leg, and a support seat 14 is provided below the support screw 11. The top of the support seat 14 is fixed with a threaded tube 12 threadedly connected to the support screw 11 for adjusting the height of the support seat 14, and an insert rod 17 is slidably installed on the outer side of the threaded tube 12 to prevent the threaded tube 12 from loosening.

[0025] It should be noted that the utility model adjusts the height of the bracket part through the pneumatic rod 2, thereby adjusting the height of the seat cushion 6. When the universal wheel 10 needs to be moved for use, the support seat 14 will be placed in the lowest position of the support screw 11 by rotating the threaded tube 12, so that the support seat 14 is in contact with the ground. At this time, a height difference is formed between the support seat 14 and the universal wheel 10. The support seat 14 lifts the universal wheel 10 so that the universal wheel 10 is separated from the ground. In this way, the foot seat 1 is stabilized in place through the support seat 14, so that the chair can be fixed when it does not need to be moved according to the use environment.

[0026] See also Figure 1 、 2 As shown, the bracket part includes a support frame 3 fixedly connected to the top of the pneumatic rod 2, the top of the support frame 3 is fixedly connected to a support beam 4, both ends of the support beam 4 are fixedly connected to a bottom support frame 5 and a backrest frame 7, the top of the bottom support frame 5 is fixedly connected to a seat cushion 6, the outer side of the backrest frame 7 is fixedly connected to a backrest 8, and the side of the seat cushion 6 is fixedly connected to an armrest 9.

[0027] It should be noted that the ends of the bottom support frame 5 and the backrest frame 7 of the present invention are both fixed to the support beam 4. One end of the bottom support frame 5 is fixed to the seat cushion 6 by screws, and the end of the seat cushion 6 away from the bottom support frame 5 is connected to the backrest frame 7 by bolts. The backrest 8 is installed on one side of the backrest frame 7 by screws, and the armrests 9 are symmetrically fixed on both sides of the seat cushion 6. Among them, the seat cushion 6 and the backrest 8 are both ergonomically designed. The seat cushion adopts a shape that conforms to the curve of the human buttocks and thighs to ensure that the pressure can be evenly distributed when sitting, reducing the discomfort caused by sitting for a long time. At the same time, the material of the seat cushion provides sufficient support while maintaining sufficient comfort. The backrest can fit the curve of the human back, and different parts of the body from the waist to the shoulders can receive appropriate support. It can help maintain a correct sitting posture, reduce pressure on the back and neck, and thus prevent pain and discomfort caused by sitting for a long time.

[0028] See also Figure 5 、 6 As shown, a metal spring 16 is fixed to the outside of the threaded tube 12, and the metal spring 16 is fixed to the insertion rod 17. The metal spring 16, the insertion rod 17 and the threaded tube 12 form a right triangle, and the metal spring 16 is located at the hypotenuse of the right triangle. The outer side of the threaded tube 12 is threadedly connected to a threaded sleeve 13, and the top of the threaded sleeve 13 is provided with a chamfered structure. The bottom of the support screw 11 is fixed to a limit plate 18, and a positioning hole 19 is provided on the outside of the limit plate 18. When the support screw 11 moves upward to the limit position, the positioning hole 19 corresponds to the position of the insertion rod 17.

[0029] It should be noted that when the universal wheel 10 is not needed, the present invention rotates the threaded tube 12 so that the threaded tube 12 is located at the bottom of the support screw 11, and the threaded tube 12 drives the support seat 14 to contact the ground. When the top of the threaded tube 12 moves to the lowest part of the support screw 11, the positioning hole 19 on one side of the limit plate 18 corresponds to the insertion rod 17. At this time, the threaded sleeve 13 is rotated, and the threaded sleeve 13 moves upward under the action of the thread. The top of the threaded sleeve 13 compresses the metal spring piece 16. In the natural state, the metal spring piece 16 elastic force pulls the positioning hole 19 outward, so that the insertion rod 17 is separated from the limit plate 18. The metal spring piece 16 presses the insertion rod 17 inward, so that the insertion rod 17 is inserted into the positioning hole 19, thereby limiting the threaded tube 12 and the limit plate 18 to prevent the two from being misaligned or deflected.

[0030] See also Figure 3 、 4 As shown in Figures 5 and 6, the support seat 14 is a truncated cone structure, and a bottom pad 15 is fixedly connected to the bottom of the support seat 14.

[0031] It should be noted that the support seat 14 of the present invention is a truncated cone structure that can evenly distribute weight, thereby increasing the stability of the chair. The truncated cone structure can effectively disperse pressure and prevent the chair from being damaged due to uneven force. The bottom pad 15 increases its friction to ensure stability when placed in this way.

[0032] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0034] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stable and supportive ergonomic chair, characterized by: include: A foot base (1) having a plurality of supporting legs arranged at equal intervals; A pneumatic rod (2), the pneumatic rod (2) is placed in the middle of the footrest (1), a bracket portion is installed on the top of the pneumatic rod (2), and a seat cushion (6) and a backrest (8) are installed on the top of the support portion; A movable support portion is placed at the bottom of the footrest (1), the movable support portion includes a universal wheel (10) rotatably placed at the end of the support leg and a fixed portion, the fixed portion includes a support screw (11) fixedly connected to the bottom of the support leg, a support seat (14) is provided below the support screw (11), a threaded tube (12) threadedly connected to the support screw (11) is fixed to the top of the support seat (14), and is used to adjust the height of the support seat (14), and an insert rod (17) is slidably installed on the outer side of the threaded tube (12) for preventing the threaded tube (12) from loosening.

2. The ergonomic chair with stable support according to claim 1, characterized in that: The bracket portion comprises a support frame (3) fixedly connected to the top of the pneumatic rod (2); the top of the support frame (3) is fixedly connected to a support beam (4); and both ends of the support beam (4) are fixedly connected to a bottom support frame (5) and a backrest frame (7).

3. The ergonomic chair with stable support according to claim 2, characterized in that: The top of the bottom support frame (5) is fixedly connected to a seat cushion (6), the outer side of the backrest frame (7) is fixedly connected to a backrest (8), and the side of the seat cushion (6) is fixedly connected to an armrest (9).

4. The ergonomic chair with stable support according to claim 1, characterized in that: A metal spring (16) is fixedly connected to the outside of the threaded tube (12), and the metal spring (16) is fixedly connected to the insertion rod (17). The metal spring (16), the insertion rod (17) and the threaded tube (12) form a right triangle, and the metal spring (16) is located at the hypotenuse of the right triangle.

5. The ergonomic chair with stable support according to claim 1, characterized in that: The outer side of the threaded pipe (12) is threadedly connected to a threaded sleeve (13), and the top of the threaded sleeve (13) is internally provided with a chamfered structure.

6. The ergonomic chair with stable support according to claim 1, characterized in that: The bottom of the support screw (11) is fixedly connected to a limit plate (18), and a positioning hole (19) is provided on the outer side of the limit plate (18). When the support screw (11) moves upward to the limit position, the positioning hole (19) corresponds to the position of the insertion rod (17).

7. The ergonomic chair with stable support according to claim 1, characterized in that: The support seat (14) is a truncated cone-shaped structure, and a bottom pad (15) is fixedly connected to the bottom of the support seat (14).

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