Zero-gravity seat

Abstract

The utility model relates to the technical field of furniture provides a zero gravity seat, including support subassembly, seat subassembly, angle limiting mechanism and operating mechanism, seat subassembly rotatably connected in support subassembly, angle limiting mechanism is located in the rotary joint of support subassembly and seat subassembly, angle limiting mechanism includes rotary limiting unit and locating wheel body, and rotary limiting unit is located in support subassembly, locating wheel body links to each other with seat subassembly, and rotary limiting unit and locating wheel body limit cooperation to lock the relative angle of seat subassembly and support subassembly, operating mechanism and rotary limiting unit transmission connection, and operating mechanism is used for driving rotary limiting unit movement to remove or restore rotary limiting unit and locating wheel body limit cooperation, has promoted the degree of beautiful, and through single operation structure has provided intuitive, safe and reliable operation experience.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, and in particular to a zero-gravity chair. Background Technology

[0002] In related technologies, some furniture, such as zero-gravity chairs, achieves its core experience by allowing the user's body to reach a relaxed posture close to zero gravity through precise angle adjustments. Currently, this function is mostly achieved through the coordinated action of linkage mechanisms and drive components such as cylinders or motors.

[0003] However, to meet the necessary range of motion and structural strength, the aforementioned technologies often expose the connecting rods and hinge points directly in the space under the seat, lacking an integrated covering or concealing design, and the unlocking action is complex. Therefore, existing zero-gravity seats need improvement in terms of structural integration, ease of operation, and ergonomics. Utility Model Content

[0004] This utility model provides a zero-gravity seat to solve the problems of exposed structure and cumbersome operation of the adjustment mechanism of existing zero-gravity seats, which leads to insufficient aesthetics, ease of use and safety.

[0005] This utility model provides a zero-gravity seat, comprising: Support components; A seat assembly, rotatably connected to the support assembly; An angle limiting mechanism is located at the rotational connection between the support assembly and the seat assembly. The angle limiting mechanism includes a rotation limiting unit and a positioning wheel. The rotation limiting unit is disposed on the support assembly. The positioning wheel is linked to the seat assembly, and the rotation limiting unit cooperates with the positioning wheel to limit the relative angle between the seat assembly and the support assembly. An operating mechanism is connected to the rotation limiting unit via a transmission connection. The operating mechanism is used to drive the rotation limiting unit to move, so as to release or restore the limiting engagement between the rotation limiting unit and the positioning wheel.

[0006] According to the present invention, a zero-gravity seat is provided, wherein the positioning wheel is a ratchet, the rotation limiting unit includes a pawl, the pawl is configured to be rotatable, and the pawl has a first state and a second state. In the first state, the pawl engages with the ratchet to lock the relative angle between the seat assembly and the support assembly; In the second state, the pawl disengages from the ratchet.

[0007] According to the present invention, a zero-gravity seat is provided with a limiting structure on the ratchet; The angle limiting mechanism further includes a limiting member, which is fixedly disposed relative to the support assembly. The limiting member cooperates with the limiting structure to limit the maximum rotation angle range of the seat assembly relative to the support assembly.

[0008] According to the zero-gravity seat provided by this utility model, the angle limiting mechanism further includes an eccentric maintaining spring, which is engaged with the pawl to maintain the pawl and the ratchet in a limiting engagement.

[0009] According to the present invention, a zero-gravity seat is provided, wherein the rotation limiting unit further includes a plate and a cover, the plate is fixedly connected to the support assembly, and the plate and the cover are connected to form an installation chamber; Both the pawl and the ratchet are located within the mounting cavity.

[0010] According to the present invention, a zero-gravity seat is provided, wherein a sliding channel is provided on one side wall of the mounting chamber, and the operating mechanism is a reversing handle; One part of the reversing handle is slidably inserted into the sliding channel and extends into the interior of the mounting chamber, while the other part of the reversing handle is located outside the mounting chamber.

[0011] According to the present invention, a zero-gravity seat is provided, wherein the rotation limiting unit is a clamp, the positioning wheel is a brake disc, and the operating mechanism is driven and cooperated with the clamp through a transmission structure to clamp and restrict the rotation of the brake disc.

[0012] According to the present invention, a zero-gravity seat is provided, wherein the operating mechanism is an operating knob and the transmission structure is a transmission rope.

[0013] According to the present invention, a zero-gravity seat is provided, wherein the opposite sides of the seat assembly are rotatably connected to the support assembly. The positioning wheel and the rotation limiting unit are both located on one side of the seat assembly at the rotational connection point with the support assembly. A damping structure is provided at the rotatable connection between the seat assembly and the support assembly on the other side. The damping structure is configured to provide resistance to the relative rotation between the seat assembly and the support assembly.

[0014] According to the zero-gravity seat provided by this utility model, the support assembly includes: A movable base, wherein the movable base is equipped with casters; The support frame is equipped with armrests, the support frame is connected to the movable base, and the support frame is rotatably connected to the seat assembly.

[0015] The zero-gravity seat provided by this utility model simplifies the complex multi-link motion in related technologies into a single-axis rotation and adopts an angle limiting mechanism with highly integrated positioning wheels and rotation limiting units, fundamentally changing the mechanical layout. This design hides all complex components at the rotational connection points of the support and seat components, improving aesthetics. Simultaneously, through a single operating structure, it provides an intuitive, safe, and reliable operating experience. Under non-human operation (i.e., without touching the operating mechanism), the angle limiting mechanism remains locked, preventing accidental changes in the seat angle during normal use (such as when suddenly leaning back or standing up), thus avoiding potential risks of falls or impacts. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of one embodiment of the zero-gravity seat provided by this utility model.

[0018] Figure 2 This is a structural schematic diagram of the reversing handle and angle limiting mechanism provided by this utility model.

[0019] Figure 3 yes Figure 2 A schematic diagram of its breakdown.

[0020] Figure 4 yes Figure 2 A cross-sectional schematic diagram.

[0021] Figure 5 This is a structural schematic diagram of another embodiment of the zero-gravity seat provided by this utility model.

[0022] Figure 6 This is a schematic diagram of the brake disc and clamp provided by this utility model.

[0023] Figure label: 100. Support assembly; 110. Movable base; 111. Movable casters; 120. Support frame; 121. Handrail; 200. Seat assembly; 210. Seat body; 211. Swivel; 220. Footrest; 221. Pedal; 300. Angle limiting mechanism; 310. Rotation limiting unit; 310a. Pawl; 310b. Clamping device; 311. Plate; 312. Cover; 313. Mounting chamber; 3131. Sliding channel; 320. Positioning wheel; 320a. Ratchet; 320b. Brake disc; 321. Limiting structure; 330. Limiting component; 340. Eccentric holding spring; 350. Mounting shaft; 400. Operating mechanism; 410. Reversing handle; 420. Operating knob; 500. Damping structure. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] The following is combined with Figures 1-6 This utility model describes a zero-gravity seat, which includes a support component 100, a seat component 200, an angle limiting mechanism 300, and an operating mechanism 400.

[0026] Reference Figure 1 and Figure 5 The seat assembly 200 is rotatably connected to the support assembly 100, and the angle limiting mechanism 300 is located at the rotatable connection between the support assembly 100 and the seat assembly 200.

[0027] Reference Figure 1 and Figure 5 The angle limiting mechanism 300 is located at the rotational connection between the support assembly 100 and the seat assembly 200. The angle limiting mechanism 300 includes a rotation limiting unit 310 and a positioning wheel 320. The rotation limiting unit 310 is located on the support assembly 100. The positioning wheel 320 is linked to the seat assembly 200, and the rotation limiting unit 310 is engaged with the positioning wheel 320 to lock the relative angle between the seat assembly 200 and the support assembly 100. The operating mechanism 400 is connected to the rotation limit unit 310 for transmission. The operating mechanism 400 is used to drive the rotation limit unit 310 to move, so as to release or restore the limiting engagement between the rotation limit unit 310 and the positioning wheel 320.

[0028] The zero-gravity seat provided by this utility model simplifies the complex multi-link motion in related technologies into a single-axis rotation, and fundamentally changes the mechanical layout by employing a highly integrated positioning wheel 320 and an angle limiting mechanism 300 for the rotation limiting unit 310. This design hides all complex components at the rotational connection between the support assembly 100 and the seat assembly 200, improving aesthetics. Simultaneously, the single operating structure provides an intuitive, safe, and reliable operating experience. Under non-human operation (i.e., without touching the operating mechanism 400), the angle limiting mechanism 300 remains locked, preventing accidental changes in the seat angle during normal use (such as when suddenly leaning back or standing up), thus avoiding potential risks of falls or impacts.

[0029] Understandably, referring to Figure 1 and Figure 5 In some examples of this utility model, the rotation center lines of the positioning wheel 320 and the seat assembly 200 coincide.

[0030] The coaxial design of the positioning wheel 320 and the seat assembly 200, achieved through the above configuration, is the core of realizing a simplified structure, smooth force flow, and stable operation. It ensures direct, efficient, and reliable angle locking.

[0031] Understandably, referring to Figures 1 to 4 In some examples of this utility model, the positioning wheel 320 is a ratchet 320a, and the rotation limiting unit 310 includes a pawl 310a. The pawl 310a is configured to be rotatable and has a first state and a second state. In the first state, the pawl 310a engages with the ratchet 320a to lock the relative angle between the seat assembly 200 and the support assembly 100. In the second state, the pawl 310a and the ratchet 320a disengage from their limit engagement.

[0032] It should be noted that in some examples of this utility model, the ratchet 320a has a circumferentially toothed structure, and similarly, the two ends of the pawl 310a can engage with one of the tooth slots (formed by two adjacent teeth) on the ratchet 320a to restrict the rotation of the ratchet 320a; all the teeth on the ratchet 320a are unidirectional teeth, and the inclined surface (gentle slope) of the teeth allows the pawl 310a to smoothly slide over the tooth tip and fall into the next tooth slot, accompanied by a "click" sound, providing clear and audible operational feedback. The process resistance is very small, and the vertical surface (or near-vertical steep surface) of the tooth will be immediately locked by the pawl 310a. Any reverse force will cause the pawl 310a to press tightly against the vertical surface of the tooth, forming a mechanical self-locking mechanism, thereby preventing any form of reversal.

[0033] When the pawl 310a is in the first state (engaged with the ratchet 320a), the ratchet 320a can only rotate freely in one direction, and will be immediately locked in the opposite direction. This mechanical self-locking feature ensures that the seat assembly will not accidentally revert to its original position during use, resulting in extremely high safety and load-bearing reliability. Switching from the first state to the second state (i.e., unlocking) requires the operating mechanism 400 to actively pull the pawl 310a to disengage it from the ratchet 320a. This avoids accidental unlocking due to accidental contact or changes in the center of gravity, and is a "fail-safe" design, meaning that the default state is always the safe locked state.

[0034] Reference Figure 3 and Figure 4 In some examples of this utility model, the ratchet 320a is provided with a limiting structure 321; The angle limiting mechanism 300 also includes a limiting member 330, which is fixedly disposed relative to the support assembly 100. The limiting member 330 cooperates with the limiting structure 321 to limit the maximum rotation angle range of the seat assembly 200 relative to the support assembly 100.

[0035] With the above structure, the limiting structure 321 and the limiting member 330 on the positioning wheel 320 (i.e., ratchet 320a) cooperate with each other to form a mechanical constraint. The above structure can effectively prevent the seat assembly 200 from exceeding the preset angle when rotating, thereby limiting its maximum rotation range, such as limiting the maximum forward and backward tilt angle of the seat, ensuring that the seat will not tilt or rotate excessively during adjustment, and improving the safety and stability of use.

[0036] Reference Figure 3 and Figure 4 In some examples of this utility model, the limiting structure 321 is a limiting notch formed on the circumferential side wall of the positioning wheel body 320, i.e., the ratchet 320a, and the limiting member 330 is a limiting post.

[0037] By using a limiting notch to form an arc-shaped groove on the positioning wheel 320 (ratchet 320a), when the seat assembly 200 drives the positioning wheel 320 (ratchet 320a) to rotate, the limiting post fixed relative to the support assembly 100 will slide relative to it within the arc-shaped groove of the limiting notch; when the rotation reaches the limit angle, the side wall of the limiting notch will contact the side of the limiting post, forming a mechanical hard block; the positioning wheel 320 (ratchet 320a) cannot continue to rotate because it is stuck by the post, thus precisely limiting the rotation angle of the seat assembly 200 within the range corresponding to the arc length of the notch. The above-mentioned contact-type limiting method has a simple structure, good rigidity, reliable limiting and intuitive operation.

[0038] Of course, in another example, the above-mentioned limiting structure 321 can also be two limiting plates spaced apart on the circumferential sidewall of the positioning wheel body 320, i.e., the ratchet 320a, and the limiting post abuts against one of the limiting plates to achieve maximum angle limiting.

[0039] Understandably, referring to Figure 3 and Figure 4 In some examples of this utility model, the angle limiting mechanism 300 also includes an eccentric holding spring 340, which is driven to engage with the pawl 310a to maintain the limiting engagement between the pawl 310a and the ratchet 320a.

[0040] The spring force ensures that the pawl 310a will not accidentally dislodge from the tooth groove of the ratchet 320a due to vibration or other reasons, thus achieving a reliable "limiting engagement" (i.e., anti-reverse function) and ensuring the stability of the seat angle locking state.

[0041] When the user operates the reversing handle 410 and actively lifts the pawl 310a to change the angle, the holding force of the spring provides the operator with a clear feedback. After releasing the adjustment mechanism, the spring force can immediately pull the pawl 310a back, so that it quickly engages with the next tooth groove, realizing "automatic reset" and angle segmentation.

[0042] More specifically, refer to Figures 2 to 4 In some examples of this utility model, the angle limiting mechanism 300 also includes a plate 311 and a cover 312. The plate 311 is fixedly connected to the support assembly 100, and can be fixedly connected by welding, bolting, snap-fitting or other methods. The plate 311 and the cover 312 are connected, and can be fixedly connected by welding, bolting, snap-fitting or other methods. An installation chamber 313 is formed between the plate 311 and the cover 312. Both the pawl 310a and the ratchet 320a are located inside the mounting chamber 313.

[0043] With the above structure, the plate 311 and the cover 312 are connected to form the mounting chamber 313. Its primary function is to encapsulate the core transmission components (pawl 310a and ratchet 320a), which provides protection, effectively isolates dust and impurities, and prevents the human body or foreign objects from directly contacting the moving parts, thereby improving safety and reliability.

[0044] Reference Figures 2 to 4 In this embodiment, a sliding channel 3131 is provided on one side wall of the installation chamber 313, and the operating mechanism 400 is a reversing handle 410. A portion of the reversing handle 410 is slidably inserted into the sliding channel 3131 and extends into the interior of the mounting chamber 313, while another portion of the reversing handle 410 is located outside the mounting chamber 313.

[0045] The sliding channel 3131 is a key design connecting the internal mechanism with external operation, allowing a portion of the reversing handle 410 to extend into the cavity while the other portion remains outside, enabling the user to operate from the outside while the internal portion can directly push or lift the pawl 310a.

[0046] The reversing handle 410 is slidably inserted into the sliding channel 3131, which means that the wall of the sliding channel 3131 forms a precise guide and constraint on the movement of the reversing handle 410, limiting the reversing handle 410 (and the internal component connected to it, i.e., the pawl 310a) to move only along a preset straight trajectory, ensuring the consistency and controllability of the operating direction, and avoiding damage to internal parts due to improper force.

[0047] It should be noted that in some embodiments of this utility model, the aforementioned limiting member 330, i.e., the limiting post, can be a limiting bolt connected to the plate 311, or the limiting member 330 can be a protruding post integrally formed with the plate 311; the pawl 310a is mounted on the mounting chamber 313, i.e., the cover 312 or the plate 311, via the mounting shaft 350, and the pawl 310a swings back and forth relative to the mounting chamber 313; the seat assembly 200 is rotatably connected to the support assembly 100 via the rotating shaft 211, and the rotating shaft 211 rotatably passes through... The system includes a cover 312, a plate 311, and a mounting chamber 313. The plate 311 is fixedly connected to the support assembly 100. One end of the eccentric retaining spring 340 is connected to the pawl 310a, and the other end is connected to the mounting chamber 313, i.e., the cover 312 or the plate 311. The rotation connection point of the pawl 310a is located between the two opposite ends of the eccentric retaining spring 340, so that the eccentric retaining spring 340 can provide tension to the pawl 310a, thereby stabilizing the engagement limit of the pawl 310a and the ratchet 320a.

[0048] Understandably, referring to Figure 5 and Figure 6 In some other examples of this utility model, the rotation limiting unit 310 is a clamp 310b, the positioning wheel 320 is a brake disc 320b, and the operating mechanism 400 is in transmission cooperation with the clamp 310b through a transmission structure so that the clamp 310b clamps and restricts the rotation of the brake disc 320b.

[0049] The clamp 310b can lock at any point on the circumference of the brake disc 320b through friction, allowing the user to achieve precise and linear locking at any position when adjusting the seat angle, completely eliminating the sense of gear shifting and achieving true stepless adjustment, which can meet more refined comfort needs.

[0050] Reference Figure 5 and Figure 6 In some other examples of this utility model, the operating mechanism 400 is an operating knob 420, and the transmission structure is a transmission rope.

[0051] The drive rope can bend easily around obstacles, which allows the operating knob 420 to be placed in any convenient location on the seat (such as the seat side panel or armrest 121). Using a drive rope instead of a series of rigid drive rods such as levers and hinges simplifies the mechanical structure and reduces the number and complexity of parts.

[0052] Specifically, refer to Figure 1 and Figure 5 In some examples of this utility model, the opposite sides of the seat assembly 200 are rotatably connected to the support assembly 100; The positioning wheel 320 and the rotation limiting unit 310 are both located at the rotational connection between one side of the seat assembly 200 and the support assembly 100. A damping structure 500 is provided at the rotatable connection between the seat assembly 200 and the support assembly 100 on the other side. The damping structure 500 is configured to provide resistance to the relative rotation between the seat assembly 200 and the support assembly 100.

[0053] Through the above-described arrangement, the core function of the angle limiting mechanism 300 (positioning wheel 320, rotation limiting unit 310) is to provide stable and segmented positioning. By placing the angle limiting mechanism 300 separately on one side, it can be ensured that in the locked state, the entire seat assembly 200 is reliably supported without wobbling through the sturdy pivot 211 and the angle limiting mechanism 300 on that side, resulting in strong load-bearing capacity.

[0054] The damping structure 500 is located on the other side, and its sole function is to apply resistance to the rotation process. When the user unlocks the angle limiting mechanism 300 to lower the backrest of the seat assembly 200, the damping structure 500 can counteract the gravitational torque generated by the weight of the seat assembly 200 and the user, preventing it from suddenly and rapidly falling down and avoiding impact and fright. When adjusting the angle, the damping structure 500 can make it rise smoothly and slowly, improving the sense of luxury and safety of operation. The damping structure 500 can absorb minor impacts during rotation, making the movement smoother and quieter.

[0055] Therefore, by distributing the two major functional modules to both sides of the pivot 211, the problems of structural congestion, excessive size, and concentrated stress caused by concentrating all components in one place are avoided, resulting in a more compact overall structure and more balanced stress on both sides.

[0056] It should be noted that in this embodiment, the damping structure 500 can be a rotary damper; of course, the use of a magnetic damper is not excluded.

[0057] Specifically, refer to Figure 1 and Figure 5In this embodiment, the seat assembly 200 includes a seat body 210 and a footrest 220, the footrest 220 being movably connected to the seat body 210; the footrest 220 is provided with a pedal 221, the pedal 221 being retractable relative to the footrest 220, and when the pedal 221 moves relative to the footrest 220, it can drive the footrest 220 to move relative to the seat body 210.

[0058] By adopting the above structure, the telescopic movement of the pedal 221 is linked to the unfolding / folding movement of the footrest 220. This means that there is no need to set up an additional unfolding mechanism 400 (such as a handle, button, or separate force application point) for the footrest 220, which greatly simplifies the product appearance, saves installation space, and makes the structure more compact. Users only need to interact with the pedal 221 to complete both actions.

[0059] In this embodiment, the footrest 220 is rotatably connected to the seat body 210, meaning that the extension trajectory of the footrest 220 is an arc. When the footrest 220 is rotated downward and forward from the retracted state, its support surface can always conform to the natural curve of the user's calf and foot; providing continuous and even support from the thigh to the calf, effectively improving comfort, promoting blood circulation in the legs, avoiding the pressure caused by the unsupported area behind the knee, and achieving the key to a relaxed posture such as "zero gravity".

[0060] Of course, in some other examples, it is possible that the footrest 220 and the seat body 210 are slidably connected.

[0061] Understandably, referring to Figure 1 and Figure 5 In some examples of this utility model, the support assembly 100 includes a movable base 110 and a support frame 120. The movable base 110 is provided with movable casters 111; the support frame 120 is provided with an armrest 121. The support frame 120 is connected to the movable base 110 and is rotatably connected to the seat assembly 200.

[0062] With the above structure, the movable base 110 is equipped with casters, which allows the entire support assembly 100 to be moved easily for use or storage in different locations; the armrests 121 on the support frame 120 provide a stable grip point for the user when getting up, sitting down or moving, increasing the safety and convenience of use; the support frame 120 is rotatably connected to the seat assembly 200, allowing the seat to rotate relative to the support assembly 100, making it convenient for the user to adjust their sitting posture or change direction, thus improving the flexibility of use.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A zero-gravity seat, characterized in that, include: Support components (100); Seat assembly (200) is rotatably connected to the support assembly (100). An angle limiting mechanism (300) is located at the rotational connection between the support assembly (100) and the seat assembly (200). The angle limiting mechanism (300) includes a rotation limiting unit (310) and a positioning wheel (320). The rotation limiting unit (310) is disposed on the support assembly (100). The positioning wheel (320) is linked to the seat assembly (200), and the rotation limiting unit (310) is limited to the positioning wheel (320) to lock the relative angle between the seat assembly (200) and the support assembly (100). An operating mechanism (400) is connected to the rotation limiting unit (310) for transmission. The operating mechanism (400) is used to drive the rotation limiting unit (310) to move, so as to release or restore the limiting engagement between the rotation limiting unit (310) and the positioning wheel (320).

2. The zero-gravity seat according to claim 1, characterized in that, The positioning wheel (320) is a ratchet (320a), and the rotation limiting unit (310) includes a pawl (310a). The pawl (310a) is configured to be rotatable and has a first state and a second state. In the first state, the pawl (310a) and the ratchet (320a) engage in a limiting cooperation to lock the relative angle between the seat assembly (200) and the support assembly (100); In the second state, the pawl (310a) and the ratchet (320a) are disengaged from the limiting engagement.

3. The zero-gravity seat according to claim 2, characterized in that, The ratchet (320a) is provided with a limiting structure (321); The angle limiting mechanism (300) further includes a limiting member (330), which is fixedly disposed relative to the support assembly (100). The limiting member (330) cooperates with the limiting structure (321) to limit the maximum rotation angle range of the seat assembly (200) relative to the support assembly (100).

4. The zero-gravity seat according to claim 2, characterized in that, The angle limiting mechanism (300) further includes an eccentric holding spring (340), which engages with the pawl (310a) to maintain the pawl (310a) in a limiting engagement with the ratchet (320a).

5. The zero-gravity seat according to any one of claims 2 to 4, characterized in that, The rotation limiting unit (310) further includes a plate (311) and a cover (312). The plate (311) is fixedly connected to the support assembly (100), and the plate (311) and the cover (312) are connected to form an installation chamber (313). Both the pawl (310a) and the ratchet (320a) are located within the mounting chamber (313).

6. The zero-gravity seat according to claim 5, characterized in that, The installation chamber (313) has a sliding channel (3131) on one side wall, and the operating mechanism (400) is a reversing handle (410). A portion of the reversing handle (410) is slidably inserted into the sliding channel (3131) and extends into the interior of the mounting chamber (313), while another portion of the reversing handle (410) is located outside the mounting chamber (313).

7. The zero-gravity seat according to claim 1, characterized in that, The rotation limiting unit (310) is a clamp (310b), the positioning wheel (320) is a brake disc (320b), and the operating mechanism (400) is in transmission cooperation with the clamp (310b) through a transmission structure so that the clamp (310b) clamps and restricts the rotation of the brake disc (320b).

8. The zero-gravity seat according to claim 7, characterized in that, The operating mechanism (400) is an operating knob (420), and the transmission structure is a transmission rope.

9. The zero-gravity seat according to claim 1, characterized in that, The opposite sides of the seat assembly (200) are rotatably connected to the support assembly (100); The positioning wheel (320) and the rotation limiting unit (310) are both located at the rotational connection between one side of the seat assembly (200) and the support assembly (100); A damping structure (500) is provided at the rotatable connection between the seat assembly (200) and the support assembly (100) on the other side. The damping structure (500) is configured to provide resistance to the relative rotation between the seat assembly (200) and the support assembly (100).

10. The zero-gravity seat according to claim 1, characterized in that, The support component (100) includes: A movable base (110) is provided with movable casters (111). The support frame (120) is provided with armrests (121), the support frame (120) is connected to the movable base (110), and the support frame (120) is rotatably connected to the seat assembly (200).

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