Ergonomic chair with stationing function

Abstract

The utility model discloses an ergonomic chair with standing and leaning function, the utility model discloses a first seat backrest can be folded and overturned 180 degrees relative to backrest support through turnover adjusting mechanism, can use as normal backrest, also can rotate multiple different angles such as 90 degrees or 180 degrees and switch as lying or vertical, when lying, can use as temporary table board, when vertical, can cooperate footboard and use standing and leaning, and footboard folding structure can fold or unfold on air pressure rod or seat leg, save the space occupied, and limiting knob can lock the angle of first seat backrest, first seat backrest still can control the height of self through adjusting buckle, in general, first seat backrest of the utility model has multiple working conditions and can be freely selected according to individual demand for user, satisfies the use demand under different scenes.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, and in particular to an ergonomic chair with standing and reclining functions. Background Technology

[0002] Ergonomic chairs are a popular type of healthy office furniture on the market. They employ ergonomic design principles, aiming to adapt to different user body types and needs through various adjustable functions such as headrests, backrests, lumbar supports, and armrests. This effectively reduces physical pressure from prolonged sitting and protects the health of the cervical and lumbar spine.

[0003] Ergonomic chairs are not only suitable for office environments, but also widely used in homes, internet cafes, hotels, conference rooms, and many other settings. They provide users with a more comfortable and healthy sitting experience, reducing physical fatigue and discomfort caused by prolonged sitting.

[0004] There are many ergonomic chair brands on the market, but most of them have fixed backrests that cannot be moved. They can only maintain one working position and cannot be flipped to multiple different angles to meet different user needs. Therefore, there is an urgent need for a more reasonable ergonomic chair to solve the above-mentioned shortcomings. Utility Model Content

[0005] In view of the shortcomings of the above-mentioned technologies, such as the inability to adjust the seat back to multiple different angles to provide different working states, this utility model provides an ergonomic chair with standing and backrest functions.

[0006] To achieve the above objectives, this utility model provides an ergonomic chair with standing and backrest functions, including a seat leg, a gas spring, and a functional chassis connected in sequence to form the main body of the seat. It also includes a first seat back, a backrest support, and a flip adjustment mechanism. One end of the backrest support is fixedly connected to the main body of the seat, and the other end is rotatably connected to the flip adjustment mechanism. The flip adjustment mechanism is fixedly connected to the first seat back, and the first seat back can be flipped 180° relative to the backrest support through the flip adjustment mechanism. A foot pedal is also movably connected to the main body of the seat.

[0007] As an improvement of this utility model, the flip adjustment mechanism includes a backrest sleeve and a rotating component. The backrest sleeve is slidably fitted onto the backrest support, and one end of the rotating component is fixedly connected to the first seat back. The backrest sleeve has a rotating groove at the end away from the backrest support, and rotating holes are provided on two opposite sides of the rotating groove. Rotating posts that are adapted to the rotating holes are provided on both sides of the rotating component, and the rotating posts are fitted into the rotating holes so that the rotating component is rotatably connected to the backrest sleeve.

[0008] As an improvement of this utility model, the backrest sleeve is further provided with a limiting knob for locking the flip adjustment mechanism. The rotating part is provided with a plurality of limiting holes on the side rotatably connected to the backrest sleeve. The inner end face of the limiting knob is provided with a limiting post. The backrest sleeve is provided with a threaded post. The end face of the threaded post is provided with a first through hole and the post surface is provided with a threaded structure. The limiting post of the limiting knob is engaged with the limiting hole through the first through hole, and the limiting knob is rotatably connected to the threaded post.

[0009] As an improvement of this utility model, the backrest support is provided with an adjustment slot, and the two opposite walls of the adjustment slot are provided with multiple hook-shaped grooves. The backrest sleeve is provided with an adjustment buckle, which is fixedly connected to the backrest sleeve. One end of the adjustment buckle forms a first hook portion and a second hook portion. A return spring is provided between the first hook portion and the second hook portion and engages with the hook-shaped grooves respectively. The first hook portion and the second hook portion are respectively provided with mutually engaging protrusions and grooves. When the adjustment buckle slides into the return groove, the protrusions and the grooves engage with each other to reset the adjustment buckle.

[0010] As an improvement of this utility model, it also includes a second seat back, which is disposed below the first seat back. The back sleeve is provided with a connecting post, and the cylindrical surface of the connecting post is provided with a connecting block. The second seat back is provided with a connecting groove that fits into the connecting block. The second seat back and the connecting post are fixedly connected by the connecting block fitting into the connecting groove.

[0011] As an improvement of this utility model, it also includes a folding mechanism, which is fixedly connected to the gas spring, the seat leg or the functional chassis. The foot pedal is flipped and connected to the folding mechanism. The foot pedal can be folded and stored on the seat body through the folding mechanism. One end of the foot pedal connected to the folding mechanism is provided with an installation opening. In the stored state, the foot pedal fits against the gas spring through the installation opening.

[0012] As an improvement of this utility model, the folding mechanism includes a fixed connector, a first folding member, and a second folding member. One end of the fixed connector is fixedly connected to the seat leg or the gas spring, and the other end is hinged to one end of the first folding member. The other end of the first folding member is hinged to one end of the second folding member, and the other end of the second folding member is hinged to the foot pedal.

[0013] As an improvement of this utility model, the first folding member is further provided with stops on both sides.

[0014] As an improvement of this utility model, the back of the foot pedal is provided with multiple protrusions, and the foot pedal is made by blow molding.

[0015] As an improvement of this utility model, the surface of the foot pedal is provided with an anti-slip layer to increase friction.

[0016] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model provides an ergonomic chair with standing and leaning functions, including a seat leg, a gas spring, a seat, a first seat back, and a backrest support connected in sequence. The first seat back is foldably mounted on the backrest support, and one end of the backrest support is fixedly connected to the seat. Foot pedals are movably connected to the seat leg. The first seat back of this utility model can be folded and flipped up to 180 degrees relative to the backrest support through a flip adjustment mechanism, so it can be used as a normal backrest. It can also be rotated 90 degrees or 180 degrees to switch between flat and vertical positions. When flat, it can be used as a temporary table. When vertical, it can be used for standing and leaning with the foot pedal. The foot pedal folding structure can be folded or unfolded on the gas spring or seat leg, saving space. At the same time, the limit knob can lock the angle of the first seat back, and the height of the first seat back can also be controlled by adjusting the buckle. Overall, the first seat back of this utility model has multiple working states that users can freely choose according to their personal needs, meeting the usage needs in different scenarios. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the first working state of this utility model;

[0018] Figure 2 This is a schematic diagram of the second working state of this utility model;

[0019] Figure 3 This is a first explosion diagram of the present invention;

[0020] Figure 4 This is a second explosion diagram of the present invention;

[0021] Figure 5 This is a schematic diagram of the backrest support of this utility model;

[0022] Figure 6 This is a front view of the backrest support of this utility model;

[0023] Figure 7 This is a reference diagram showing the first usage state of this utility model;

[0024] Figure 8 This is a reference diagram showing the second usage state of the present invention;

[0025] Figure 9This is a schematic diagram of the backrest bracket and the first seat back of the present invention;

[0026] Figure 10 This is an exploded view of the backrest sleeve and backrest bracket of this utility model;

[0027] Figure 11 This is a bottom view of the present invention.

[0028] The symbols for the main components are explained below:

[0029] 1. First seat back; 2. Backrest bracket; 21. Adjustment slot; 22. Hook-shaped groove; 23. Reset slot; 3. Flip adjustment mechanism; 31. Backrest sleeve; 311. Rotating slot; 312. Rotating hole; 313. Threaded post; 314. First through hole; 315. Connecting post; 316. Connecting block; 317. Mounting slot; 318. Mounting block; 319. Mounting hole; 2. Rotating component; 321. Rotating post; 322. Limiting hole; 4. Folding mechanism; 41. Fixed connecting component; 42. First folding component; 421 1. Stop block; 43. Second folding piece; 5. Limit knob; 51. Limit post; 6. Gas spring; 7. Foot pedal; 71. Protrusion; 72. Mounting opening; 73. Storage slot; 8. Adjustment buckle; 81. First hook part; 811. Protrusion; 82. Second hook part; 821. Groove; 83. Return spring; 84. Mounting slot; 85. Mounting post; 9. Seat seat; 10. Seat leg; 11. Functional chassis; 12. Second seat back; 121. Connecting slot; 13. Person; 14. Hips; 15. Feet. Detailed Implementation

[0030] To more clearly illustrate this utility model, the following description, in conjunction with the accompanying drawings, will provide a further picture.

[0031] In the following description, specific examples are given to provide a more in-depth understanding of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of them. It should be understood that the specific embodiments described are only used to explain the present invention and are not intended to limit the present invention.

[0032] It should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the said feature, integral, step, operation, element, or component, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, or combinations thereof.

[0033] Please see Figures 1-11This utility model discloses an ergonomic chair with standing and backrest functions, comprising a seat leg 10, a gas spring 6, and a functional chassis 11 connected in sequence to form the main body of the seat. It also includes a main body of the seat, a first seat back 1, a backrest support 2, and a tilting and adjusting mechanism 3. One end of the backrest support 2 is fixedly connected to the main body of the seat, and the other end is rotatably connected to the tilting and adjusting mechanism 3. The tilting and adjusting mechanism 3 is fixedly connected to the first seat back 1, and the first seat back 1 can be tilted 180° relative to the backrest support 2 via the tilting and adjusting mechanism 3. A footrest 7 is also movably connected to the main body of the seat. The first seat backrest 1 of the utility model can be flipped relative to the backrest support 2. The first seat backrest 1 can achieve a maximum flipping adjustment of 180° through the flipping adjustment mechanism 3. Through the flipping adjustment mechanism 3, the first seat backrest 1 can achieve a variety of different angle adjustments, such as being placed horizontally as a temporary office desk, or flipped to the back of the backrest support 2 to provide a support point for the user when standing or leaning. It can be used as a normal backrest, or it can be flipped and used with the foot pedal 7 for standing or leaning, or flipped to a horizontal position. Through different angles, it provides users with a variety of working states.

[0034] The working principle of this utility model is as follows:

[0035] In use, the first seat backrest 1 can be directly pressed and flipped to the desired angle within a 180-degree range using the flip adjustment mechanism 3. A limiting knob 5 for fixing the angle of the first seat backrest 1 is provided on the side of the backrest sleeve 31. Rotating the limiting knob 5 causes the limiting post 51 to insert into the limiting hole 322 on the rotating part 32, thus fixing the angle. A foot pedal 7 is provided under the seat 9. The foot pedal 7 can be folded and stored on the seat leg 10 or the gas spring 6 via the folding mechanism 4. The fixing connector 41 of the folding mechanism 4 is fixedly connected to the seat leg 10 by screws or fixedly sleeved on the gas spring 6. The first folding part 42 and the second folding part 43 are hinged to each other and respectively connected to the fixing connector 41 and the foot pedal 7. The hinged design forms a three-layer folding storage system, requiring sequential folding for unfolding or storage. The foot pedal 7, in conjunction with the flipped-up first seat back 1, provides users with a stable and comfortable standing position. When a user steps on the foot pedal 7, it slightly indents under pressure, providing a point of leverage for the user's standing position. Simultaneously, when the user's body leans against the first seat back 1, the foot pedal 7 effectively counteracts the pushing force on the seat, preventing it from sliding. The backrest sleeve 31 can also adjust the height of the first seat back 1 by adjusting the position of the buckle 8 in the adjustment slot 21, allowing users to flexibly adjust to their most suitable height. At the same time, the second seat back 12 can also provide a backrest for other users when they are sitting upright, while the user is standing.

[0036] In this embodiment, the flip adjustment mechanism 3 includes a backrest sleeve 31 and a rotating member 32. The backrest sleeve 31 is slidably sleeved on the backrest support 2, and one end of the rotating member 32 is fixedly connected to the first seat back 1. The backrest sleeve 31 has a rotating groove 311 at the end away from the backrest support 2. The rotating groove 311 has rotating holes 312 on its two opposite sides. The rotating member 32 has rotating posts 321 on both sides that are adapted to the rotating holes 312. The rotating posts 321 are fitted into the rotating holes 312 so that the rotating member 32 is rotatably connected to the backrest sleeve 31. When the first seat back 1 is pressed to adjust the angle, the rotating posts 321 on the rotating member 32 rotate in the rotating holes 312 to drive the first seat back 1 to rotate together.

[0037] Furthermore, the backrest sleeve 31 is also provided with a limiting knob 5 for locking the flip adjustment mechanism 3. Multiple limiting holes 322 are provided on the side of the rotating component 2 that is rotatably connected to the backrest sleeve 31. A limiting post 51 is provided on the inner end face of the limiting knob 5. A threaded post 313 is provided on the backrest sleeve 31. A first through hole 314 is provided on the end face of the threaded post 313, and a threaded structure is provided on the post surface. The limiting post 51 of the limiting knob 5 engages with the limiting hole 322 through the first through hole 314. The limiting knob 5 is sleeved on the threaded post 313 and engages with the threaded structure to achieve a rotatable connection. When the first seat backrest 1 is adjusted to a suitable angle, in order to prevent the first seat backrest 1 from rotating, a limiting knob 5 is also provided on the backrest sleeve 31. A limiting knob 5 is provided for fixing the angle of the first seat back 1. The limiting knob 5 is rotatably connected to the threaded post 313 on the back sleeve 31. By rotating the limiting knob 5, the axial position of the limiting knob 5 can be changed, moving away from or closer to the rotating part 32. When the limiting knob 5 is close to the rotating part 32, the limiting post 51 will engage with multiple limiting holes 322 on the rotating part 32 to fix and limit the rotation of the first seat back 1. The limiting holes 322 can be set to fix multiple angles of the first seat back, such as 30°, 60°, 90°, 120°, 180°, etc. As long as it is within the range of 180°, the user can flexibly adjust according to the angle produced by the manufacturer, or customize the angle required by themselves.

[0038] In this embodiment, a second seat backrest 12 is also included. The second seat backrest 12 is disposed below the first seat backrest 1. A connecting post 315 is provided on the backrest sleeve 31, and a connecting block 316 is provided on the cylindrical surface of the connecting post 315. A connecting groove 121 is provided on the second seat backrest 12 to fit into the connecting block 316. The second seat backrest 12 and the connecting post 315 are fixedly connected by the connecting block 316 fitting into the connecting groove 121. After the first seat backrest 1 is flipped over, the second seat backrest 12 of this utility model can still be used as a normal seat backrest. Even when standing on the first seat backrest 12, it can be supported by the second seat backrest 12. At the same time, it provides two working states: standing and sitting, which enhances the practicality of the seat.

[0039] Please see the appendix. Figure 7 -Appendix Figure 8 This utility model provides a user usage state diagram. When a person 13 stands on the foot pedal 7, their buttocks 14 are in contact with the first seat back 1, and their feet 15 are in contact with the foot pedal 7. Any position of the first seat back 1 can provide support for the buttocks 14, adapting to any standing posture of the person 13. The weight of the person 13 is applied to the first seat back 1 and the foot pedal 7 through the buttocks 14 and the feet 15, respectively. The triangular support structure formed by the person 13, the first seat back 1, and the foot pedal 7 effectively enhances the stability when standing. Moreover, this utility model is not limited to the above application scenarios, and can also be used in various postures such as lying on the first seat back 1 with the chest or leaning sideways against the first seat back 1.

[0040] In this embodiment, the backrest bracket 2 is provided with an adjustment slot 21, and the two opposite walls of the adjustment slot 21 are provided with a plurality of hook-shaped grooves 22. The backrest sleeve 31 is provided with an adjustment buckle 8 inside, and the adjustment buckle 8 is fixedly connected to the backrest sleeve 31. Please refer to the appendix. Figure 10 For example, a mounting slot 317 and a mounting block 318 can be provided in the mounting slot 31 on the backrest sleeve 31. The mounting block 318 has a mounting hole 319 on the side opposite to the adjusting buckle 8. A mounting slot 84 is provided in the adjusting buckle 8. A mounting post 85 is provided that passes through and fits into the mounting slot 84 and the mounting hole 319 in sequence to fix the adjusting buckle 8 and the mounting block 318 to each other. One end of the adjusting buckle 8 forms a first hook portion 81 and a second hook portion 82. A return spring 83 is provided between the first hook portion 81 and the second hook portion 82 and engages with the hook groove 22 respectively. The first hook portion 81 and the second hook portion 82 are respectively provided with a protrusion 811 and a groove 821 that engage with each other. When the adjusting buckle 8 slides into the return slot 23, the protrusion 811 and the groove 821 engage with each other to reset the adjusting buckle 8. The adjusting buckle 8 and the adjusting slot 21 are connected by adjusting the adjusting buckle 8 and the adjusting slot 21. The height of the first seat backrest 1 is fixed and adjusted by the first hook part 81 and the second hook part 82 cooperating with the hook groove 22. When the adjusting buckle 8 slides to the reset groove 23, since the width of the reset groove 23 is smaller than the width of the adjusting groove 21, the first hook part 81 and the second hook part 82 are squeezed by the relative wall of the reset groove 23. The reset spring 83 pulls the first hook part 81 and the second hook part 82 closer, forcing the protrusion 811 and the groove 821 to engage with each other. At this time, the first hook part 81 and the second hook part 82 are fixedly connected to each other and cannot engage with the hook groove 22. The user can then adjust the first seat backrest 1 to the lowest position, so that the adjusting buckle 8 abuts against the wall of the adjusting groove 21, separating the protrusion 811 and the groove 821, so that the reset spring 83 releases its elastic force to allow the first hook part 81 and the second hook part 82 to reopen, thereby readjusting the height of the first seat backrest 1.

[0041] It also includes a folding mechanism 4, which is fixedly connected to the gas spring 6, seat leg 10, or functional chassis 11. The foot pedal 7 is flipped and connected to the folding mechanism 4. The foot pedal 7 can be folded and stored on the seat body through the folding mechanism 4. The end of the foot pedal 7 connected to the folding mechanism 4 is provided with an installation opening 71. In the stored state, the foot pedal 7 fits against the gas spring 6 through the installation opening 71. The folding mechanism 4 can be fixedly connected to the gas spring 6, seat leg 10, or functional chassis 11. There are multiple connection positions that can be flexibly adjusted. The foot pedal 7 is flipped and connected to the folding mechanism 4, and the installation opening 71 fits against the gas spring 6 to save space occupied by the foot pedal 7. When in use, it can also be unfolded through the folding mechanism 4 to provide users with a convenient user experience.

[0042] In this embodiment, the folding mechanism 4 includes a fixed connector 41, a first folding member 42, and a second folding member 43. One end of the fixed connector 41 is connected to the seat leg 10 (see attached diagram). Figure 11 ), pneumatic rod 6 (see appendix) Figure 2 The foot pedal 7 is fixedly connected to the functional chassis at one end and hinged to one end of the first folding member 42 at the other end. The other end of the first folding member 42 is hinged to one end of the second folding member 43 at the other end, and the other end of the second folding member 43 is hinged to the foot pedal 7. When the user folds and stores the foot pedal 7, the foot pedal 7 must first be flipped over and folded onto the second folding member 43. Then, the second folding member 43 and the first folding member 42 are flipped over and folded onto the first folding member 42 respectively. At this time, the foot pedal 7 is stored. There are also stops on both sides of the first folding member. The stops are mainly used to limit the first folding member and prevent excessive flipping after the first folding member is unfolded. There is also a storage slot on the foot pedal that matches the second folding member. When the second folding member is in the folded storage state, the second folding member can be placed into the storage slot to save the space occupied by the folding mechanism.

[0043] In this embodiment, the back of the foot pedal 7 has multiple protrusions 71. The foot pedal 7 is made by blow molding. When a user stands on the foot pedal 7, the protrusions 71 on the back can provide a certain force to the foot pedal 7, preventing the foot pedal 7 from deforming too much. The foot pedal 7 is made by blow molding, which forms a hollow structure inside. When the user steps on it, this hollow design can reduce the overall weight of the foot pedal 7, while providing a certain elastic feedback and increasing the user's comfort. Compared with traditional solid foot pedals, this utility model can also reduce production costs to a certain extent. However, the foot pedal 7 can also be made of solid wood. In this case, the thickness needs to be reduced to ensure that the weight is not too large. While maintaining a good ground feel, it is also necessary to ensure that the weight does not make it difficult for the user to store and fold. In comparison, the hollow foot pedal 7 made by blow molding has more advantages.

[0044] In this embodiment, the surface of the foot pedal 7 is provided with an anti-slip layer to increase friction. Since users may slip and lose their balance when standing on the foot pedal, leading to a risk of falling, an anti-slip layer is added to the foot pedal to increase the friction between the foot pedal 7 and the user. This anti-slip layer can generally be a rough sand or a paint with a special anti-slip coating, such as a polyurethane coating. By increasing the friction between the user and the foot pedal, the user can stand on the foot pedal 7 more stably and safely, thus improving the practicality of the product.

[0045] The advantages of this utility model are:

[0046] 1. The first seat backrest of this utility model can be folded and flipped 180 degrees relative to the backrest support through the flipping adjustment mechanism. It can be used as a normal backrest, or rotated 90 degrees or 180 degrees to switch between flat and vertical positions. When flat, it can be used as a temporary table. When vertical, it can be used for standing and leaning with the foot pedal. The foot pedal folding structure can be folded or unfolded on the gas spring or seat leg to save space. At the same time, the limit knob can lock the angle of the first seat backrest. The height of the first seat backrest can also be controlled by adjusting the buckle. Overall, the first seat backrest of this utility model has multiple working states that users can freely choose according to their personal needs to meet the usage needs in different scenarios. In addition, the second seat backrest can also serve as a support backrest for a second user when sitting upright.

[0047] The above-disclosed embodiments are only a few specific examples of this utility model. However, this utility model is not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of this utility model.

Claims

1. An ergonomic chair with standing and reclining functions, comprising seat legs, a gas spring, and a functional chassis connected sequentially to form the main body of the seat, characterized in that, The seat includes a first seat back, a backrest support, and a flip adjustment mechanism. One end of the backrest support is fixedly connected to the seat body, and the other end is rotatably connected to the flip adjustment mechanism. The flip adjustment mechanism is fixedly connected to the first seat back, and the first seat back can be flipped 180° relative to the backrest support through the flip adjustment mechanism. A foot pedal is also movably connected to the seat body.

2. An ergonomic chair with standing and reclining functions according to claim 1, characterized in that, The flip-adjustment mechanism includes a backrest sleeve and a rotating component. The backrest sleeve is slidably fitted onto the backrest support. One end of the rotating component is fixedly connected to the first seat back. The backrest sleeve has a rotating groove at the end away from the backrest support. Rotating holes are provided on two opposite sides of the rotating groove. Rotating posts that are adapted to the rotating holes are provided on both sides of the rotating component. The rotating posts are fitted into the rotating holes so that the rotating component is rotatably connected to the backrest sleeve.

3. An ergonomic chair with standing and reclining functions according to claim 2, characterized in that, The backrest sleeve is also provided with a limiting knob for locking the flip adjustment mechanism. The rotating part is provided with multiple limiting holes on the side that is rotatably connected to the backrest sleeve. The inner end face of the limiting knob is provided with a limiting post. The backrest sleeve is provided with a threaded post. The end face of the threaded post is provided with a first through hole. The post surface is provided with a threaded structure. The limiting post of the limiting knob is fitted with the limiting hole through the first through hole. The limiting knob is sleeved on the threaded post and cooperates with the threaded structure to achieve a rotatable connection.

4. An ergonomic chair with standing and reclining functions according to claim 3, characterized in that, The backrest support is provided with an adjustment slot, and the two opposite walls of the adjustment slot are provided with multiple hook-shaped grooves. The backrest sleeve is provided with an adjustment buckle, which is fixedly connected to the backrest sleeve. One end of the adjustment buckle forms a first hook portion and a second hook portion. A return spring is provided between the first hook portion and the second hook portion and engages with the hook-shaped grooves respectively. The first hook portion and the second hook portion are respectively provided with mutually engaging protrusions and grooves. When the adjustment buckle slides into the return groove, the protrusions and the grooves engage with each other to reset the adjustment buckle.

5. An ergonomic chair with standing and reclining functions according to claim 2, characterized in that, It also includes a second seat back, which is located below the first seat back. The back sleeve is provided with a connecting post, and the cylindrical surface of the connecting post is provided with a connecting block. The second seat back is provided with a connecting groove that fits into the connecting block. The second seat back and the connecting post are fixedly connected by the connecting block fitting into the connecting groove.

6. An ergonomic chair with standing and reclining functions according to claim 1, characterized in that, It also includes a folding mechanism, which is fixedly connected to the gas spring, the seat leg or the functional chassis. The foot pedal is flipped and connected to the folding mechanism. The foot pedal can be folded and stored on the seat body through the folding mechanism. One end of the foot pedal connected to the folding mechanism is provided with an installation opening. In the stored state, the foot pedal fits against the gas spring through the installation opening.

7. An ergonomic chair with standing and reclining functions according to claim 6, characterized in that, The folding mechanism includes a fixed connector, a first folding member, and a second folding member. One end of the fixed connector is fixedly connected to the gas spring, the seat leg, or the functional chassis, and the other end is hinged to one end of the first folding member. The other end of the first folding member is hinged to one end of the second folding member, and the other end of the second folding member is hinged to the foot pedal.

8. An ergonomic chair with a standing and reclining function according to claim 7, characterized in that, The first folding member is also provided with stops on both sides.

9. An ergonomic chair with standing and reclining functions according to claim 1, characterized in that, The foot pedal has multiple protrusions on its back and is made by blow molding.

10. An ergonomic chair with a standing and reclining function according to claim 1, characterized in that, The surface of the foot pedal is provided with an anti-slip layer to increase friction.

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