Safe and comfortable zero-gravity seat and vehicle

Abstract

The invention belongs to the technical field of automobile parts, and particularly relates to a safe and comfortable zero-gravity seat which comprises a backrest, a seat cushion and a control system, and a plurality of supporting and adjusting units are arranged in the backrest and the seat cushion. Each unit comprises a container, a partition plate, a movable rod, a spring and a pressure sensor; the container is divided into an upper layer cavity and a lower layer cavity by a partition plate, the upper layer cavity and the lower layer cavity are filled with magnetorheological fluid and non-Newtonian fluid respectively, and the upper layer cavity is sleeved with a coil. When a passenger sits, the pressure enables the movable rod to move downwards, the pressure sensor detects a signal and transmits the signal to the control system, and the system changes the viscosity of the magnetorheological fluid by adjusting the current of each unit coil, so that the resistance and displacement of the movable rod are dynamically adjusted, fitting with a human body curve is realized, and suspension of the waist is eliminated. The problem of waist fatigue caused by the fact that an existing seat cannot be dynamically attached to a human body curve is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of automobile parts, and in particular relates to a safe and comfortable zero-gravity seat and a vehicle. Background Art

[0002] With the increasing demand for automotive comfort, zero-gravity car seats are becoming a core feature in vehicles ranging from family sedans to commercial vehicles. The design concept is inspired by the zero-gravity posture used in aerospace. The angle between the occupant's torso and thighs is between 120° and 135°, nearly a reclining position. This posture effectively disperses spinal pressure and reduces muscle fatigue.

[0003] However, the backrests and seat cushions of existing zero-gravity seats mostly use integral foam or fixed partitioned support structures, which can only achieve posture adaptation through macro-angle adjustment and cannot accurately fit the spinal curves and hip contours of passengers of different body types. Especially in long-distance driving scenarios, the muscles in the suspended area of ​​the waist need to continuously exert force to maintain sitting balance, resulting in the waist being in a non-fitting support state. This long-term support imbalance will cause the waist muscles to remain tense and unable to effectively relax, which in turn induces waist muscle soreness and stiffness, and even causes chronic lumbar strain, becoming a key pain point affecting driving comfort. Summary of the Invention

[0004] The present invention aims to provide a safe and comfortable zero-gravity seat and vehicle to solve the problem that existing seats cannot be dynamically adjusted in real time to fit the human waist and back curve, and easily form a suspended area between the waist and the seat back, causing waist and back fatigue.

[0005] In order to achieve the above-mentioned object, one aspect of the present invention is to provide a technical solution: a safe and comfortable zero-gravity chair, comprising a seat body, the seat body comprising a backrest, a plurality of support adjustment units arranged on the backrest, each support adjustment unit comprising a container, a container cover, a movable rod and a partition, the container being a cavity with an upper end opening, the partition being fixed on the inner side wall of the container, a through hole being provided in the center of the partition, the partition dividing the interior of the container into an upper chamber and a lower chamber which are independent of each other, the interior of the upper chamber being filled with a magnetorheological fluid, the coil being arranged outside the upper chamber, and the interior of the lower chamber being filled with a non-Newtonian fluid; The movable rod passes through the upper chamber and the lower chamber and is slidably sealed with the through hole of the partition. The two ends of the spring are respectively fixed to the container cover and one end of the movable rod. A boss is provided between the spring and the movable rod. The height of the boss is less than the natural extension length of the spring. The boss is fixed to the movable rod. A pressure sensor is provided on the side of the container cover facing the boss. It also includes a control system of the seat body, the control system is connected to the pressure sensor signal, and the control system is electrically connected to the coil.

[0006] The working principle and beneficial effects of this solution are as follows: when a passenger sits down on the seatback, local body pressure is transmitted to the container cover of the corresponding support adjustment unit. The container cover, under pressure, compresses the spring, driving the movable rod to slide downward along the partition hole. The sliding seal between the movable rod and the partition ensures that the upper layer of magnetorheological fluid and the lower layer of non-Newtonian fluid do not leak into each other. At this time, due to the slow rate of pressure change when the person sits down, the non-Newtonian fluid in the lower chamber is in a low-viscosity state and can flow slowly as the movable rod moves downward, providing space for the movable rod to move. Simultaneously, the pressure sensor in the container cover contacts the boss, collecting real-time pressure data in the corresponding area and transmitting the signal to the control system. When the person sits in a fixed position, the reverse support force of the spring keeps the movable rod in place. Each independent support adjustment unit can form a point-to-point fit based on the pressure of the corresponding area, such as the protrusion of the spine or the concave part of the back, to achieve precise adaptation for different body shapes.

[0007] The control system can adjust the input current of the corresponding coil in a targeted manner according to the pressure distribution differences of each support adjustment unit. For units with high pressure values ​​and requiring a larger downward movement, the coil current is reduced to reduce the viscosity of the magnetorheological fluid in the upper chamber, reduce the downward movement resistance of the movable rod, and allow the movable rod to move further to fit the protruding parts of the human body; for units with low pressure values ​​and requiring a smaller downward movement, the coil current is increased to increase the viscosity of the magnetorheological fluid and increase the downward movement resistance to avoid excessive displacement of the movable rod causing the human body to be suspended in the air.

[0008] Once a passenger takes their seat, the new energy vehicle's system quickly identifies them, automatically recalls the preset seat firmness preference, and simultaneously initiates seat support unit adjustments. Each unit independently adjusts height and support based on regional body pressure and user preferences. The movable bar moves downward more significantly in areas with raised lumbar ridges and less in areas with recessed lumbar ridges, creating a contoured support surface that prevents the lumbar from hanging in the air and optimizes spinal support and comfort for extended periods of sitting.

[0009] When Zero Gravity Seat mode is activated, safety protection against bumps, sudden collisions, and rear-end collisions is significantly enhanced. The non-Newtonian fluid in the lower chamber instantly behaves like a solid under impact, preventing the movable bar from suddenly moving and preventing the person from sliding along the seatback due to inertia. Furthermore, when the pressure sensor detects a sudden pressure change, the control system increases the current flowing through the coil, rapidly increasing the viscosity of the magnetorheological fluid and further increasing the resistance in the upper chamber. This creates a dual rigid constraint with the non-Newtonian fluid, limiting the movable bar's movement and providing multiple protections in conjunction with the vehicle's seatbelts. For minor bumps, the control system moderately increases the coil current to maintain the magnetorheological fluid's viscosity in the medium-to-high range, allowing the movable bar to slightly shift to absorb the bump's energy while preventing excessive movement that could affect comfort. This is particularly true in rear-end collisions, where inertia can cause occupants to exert an impact force against the seatback. Traditional seat backs utilize sponge filling, which can easily sag excessively after impact, rendering them unable to provide stable support. This can cause the body to slide along the backrest surface, increasing the risk of injury. In this solution, when the pressure sensor detects a dramatic change in the impact pressure of the body on the backrest, the control system rapidly increases the current flowing into the coils of each support adjustment unit, causing the magnetorheological fluid in the upper chamber to instantly reach a high viscosity. This, combined with the high rigidity of the non-Newtonian fluid in the lower chamber due to the sudden increase in impact pressure, limits the displacement of the movable rod, thereby maintaining the backrest in a fixed shape that conforms to the body's contours and effectively preventing slippage.

[0010] In addition to being able to adaptively adjust to suit the human waist and back curve, the seat back of this solution can also enable users to individually adjust the support resistance in different parts to meet the needs of users of different weights and different sitting postures. Users can adjust the current of coils in different parts through the control system to make the seat back produce different degrees of softness and hardness before the user sits down; and each support adjustment unit works independently, and the failure of a single unit will not affect the overall function, thereby improving the reliability of the seat.

[0011] Optionally, the seat body further includes a seat cushion, on which a plurality of support adjustment units are arranged.

[0012] Optionally, the container cover is shaped like one or more of a circle, polygon, or irregular shape. The seat cushion includes a buttocks cushion and a thigh cushion. The upper surfaces of the several container covers for the buttocks cushion are designed to have a concave structure that matches the curve of the human buttocks. The circular container cover has the characteristics of uniform force distribution and no stress concentration, making it suitable for areas requiring flexible deformation. The polygonal container cover forms a continuous support surface through edge splicing, making it suitable for areas with overall stable support. The concave structure complements the natural curve of the human buttocks, increasing the contact area between the container cover and the buttocks. At the same time, the concave structure can form a wrap-around constraint to enhance comfort.

[0013] Optionally, the seat cushion's buttock support and adjustment unit has a lower chamber height that is 1.5 times or greater than the upper chamber height. The buttocks are the core weight-bearing area when seated, requiring the buttocks to move significantly more than the support and adjustment unit. This increased lower chamber height allows for a longer downward travel for the active rod, preventing the active rod from becoming stuck due to the lower chamber's height limitation.

[0014] Optionally, the depth of the lower chamber of the seat cushion's support adjustment unit decreases from the buttocks to the thighs. When a person sits down, the control system energizes the coil to create resistance against the movable rod, maintaining the zero-gravity seat's angle. In the event of a collision, the coil de-energizes the movable rod, causing it to move downward. This reduces the angle between the torso and thigh relative to normal, making it less likely for the person to slide in a collision.

[0015] Optionally, the backrest of the seat includes a lumbar region and a thoracic region, and the container cover area of ​​the lumbar region is smaller than that of the thoracic region, thereby strengthening the core support of the lumbar spine through differentiated density.

[0016] Optionally, a cooling water circulation system is provided within the seat. The cooling water circulation system includes a heat absorber, a heat sink, and a circulation pump. The circulation pump is connected between the heat absorber and the heat sink. The heat absorber includes a heat absorbing plate and a cooling water tank, which are fixedly connected to the cooling water tank and positioned between adjacent support and adjustment units. The heat sink includes fins and cooling water pipes, which are fixedly connected to the cooling water pipes. The heat sink is positioned entirely outside the seat. The cooling water tank and the cooling water pipes are directly connected, forming a closed cooling water circulation path. The circulation pump is used to drive the cooling medium to circulate within the path formed by the heat absorber and the heat sink. The heat absorber is used to absorb heat generated during the operation of the support and adjustment units to maintain a stable temperature of the support and adjustment units. The heat sink is used to dissipate the heat absorbed by the heat absorber to the external environment, thereby improving seat comfort.

[0017] Optionally, the seat body also includes a fixed outer layer, an elastic filling layer, a support layer and a seat main frame, wherein the fixed outer layer, the elastic filling layer and the support layer are connected in sequence from the outside to the inside, a number of support adjustment units constitute the support layer, the container cover is connected to the elastic filling layer, and the container bottom is fixed to the seat main frame.

[0018] Optionally, the seat body further includes a headrest and a footrest, and a plurality of support adjustment units are arranged at the footrest.

[0019] Another aspect of the present invention is to provide a vehicle, comprising a vehicle body, in which the aforementioned zero-gravity seat is installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is an overall schematic diagram of a zero-gravity chair in an embodiment of the present invention; Figure 2 is a schematic cross-sectional view of a support adjustment unit in a stationary state according to an embodiment of the present invention; Figure 3 2. It is a cross-sectional schematic diagram of a support adjustment unit in a compressed state according to an embodiment of the present invention; Figure 4 Schematic diagram of a cooling water circulation device in an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The following is further described in detail through specific implementation methods: The marks in the drawings of the specification include: backrest 1, seat cushion 2, headrest 3, footrest 4, support adjustment unit 5, container 51, upper chamber 501, magnetorheological fluid 502, coil 503, lower chamber 504, non-Newtonian fluid 505, container cover 52, partition 53, pressure sensor 54, spring 55, movable rod 56, boss 57, cooling water circulation system 6, heat absorption plate 61, heat sink 62, circulation pump 63, cooling water tank 64, cooling water pipe 65, buttocks pad 71, thigh pad 72, lumbar area 73, thoracic area 74.

[0022] Example This embodiment is basically as Figure 1 、 Figure 2 The invention provides a safe and comfortable zero-gravity seat and vehicle, comprising a vehicle body and a safe and comfortable zero-gravity seat. The safe and comfortable zero-gravity seat comprises a seat body. The seat body primarily comprises a backrest 1, a seat cushion 2, a headrest 3, and a footrest 4. The backrest 1 and seat cushion 2 are the core functional areas, with multiple support adjustment units 5 embedded within.

[0023] The support and adjustment unit 5 is a key component for achieving dynamic fit and intelligent adjustment. Each support and adjustment unit 5 comprises a container 51, a container lid 52, a movable rod 56, and a partition 53. The container 51 is an open-top cavity made of electrically insulating ceramic to ensure the safety of the coil 503 when energized. The partition 53 is integrally formed on the inner wall of the container 51 and has a through-hole in its center. The partition 53 separates the interior of the container 51 into the independent upper chamber 501 and lower chamber 504.

[0024] The upper chamber 501 is filled with magnetorheological fluid 502, and the coil 503 is mounted outside the upper chamber 501. The lower chamber 504 is filled with non-Newtonian fluid 505. A movable rod 56 extends through the upper chamber 501 and the lower chamber 504. A sliding seal is used between the outer side of the movable rod 56 and the inner wall of the through hole to ensure that the upper and lower fluids do not interpenetrate. At the same time, due to the sealing properties of the lower chamber 504, the downward movement of the movable rod 56 compresses the air within it. When the pressure on the movable rod 56 disappears, the air pressure in the lower chamber 504 recovers, which helps to reset the movable rod 56. A retaining ring is fixed to the central through hole of the partition 53. The outer side of the retaining ring is inclined. When the movable rod 56 slides in the through hole, the retaining ring can scrape off the fluid attached to the movable rod 56. The two ends of the spring 55 are respectively fixed to the container cover 52 and one end of the movable rod 56. A boss 57 is provided between the spring 55 and the movable rod 56 . The height of the boss 57 is less than the natural extension length of the spring 55 . The boss 57 is fixed on the movable rod 56 . A pressure sensor 54 is provided on the side of the container cover 52 facing the boss 57 .

[0025] The seat is also provided with a control system. In this embodiment, the control system is an ECU system. The ECU system is connected to the signals of each pressure sensor 54, and each coil 503 is connected to the ECU system through a wiring harness. The power supply for the ECU system, coil 503, circulation pump 63 and other devices is wired using the vehicle's own battery system.

[0026] In the support adjustment unit 5 arranged in the buttocks load-bearing area of ​​the seat cushion 2, the height dimension of the lower chamber 504 of the container 51 is set to three times the height dimension of the upper chamber 501 to meet the demand for large displacement of the buttocks and avoid insufficient displacement stroke of the movable rod 56. In this embodiment, the shape of the container cover 52 is a regular hexagon, and the container cover 52 forms a continuous support surface by splicing the edges. The seat cushion 2 includes a buttocks pad 71 and a thigh pad 72, wherein the upper surface of the container cover 52 of the buttocks pad 71 is set to a concave structure adapted to the curve of the human buttocks. The concave structure forms a complementary fit with the natural curve of the human buttocks, increasing the contact area between the container cover 52 and the buttocks. At the same time, the concave structure can form a wrap-around constraint to improve comfort. In addition, the support adjustment unit 5 of the seat cushion 2 decreases in height from the buttocks 71 to the thighs 72, and the height of the lower chamber 504 of the container 51 decreases successively. In a normal sitting posture, the control system maintains the zero gravity angle by adjusting the current of the coil 503; when a collision occurs, the control system cuts off the power to the coil 503, and the movable rod 56 moves downward to reduce the angle between the torso and the thigh, further suppressing the occupant from sliding.

[0027] A cooling water circulation system 6 is provided inside the seat, and the cooling water circulation system 6 includes a heat absorbing device, a heat dissipating device and a circulation pump 63. Among them, the circulation pump 63 is connected between the heat absorbing device and the heat dissipating device, and is used to drive the cooling water to flow in the system. The heat absorbing device includes a heat absorbing plate 61 and a cooling water tank 64. The heat absorbing plate 61 is fixedly connected to the cooling water tank 64, and the heat absorbing plate 61 is arranged between adjacent support and adjustment units 5, and can fully absorb the heat near the support and adjustment units 5. The heat dissipating device includes a heat sink 62 and a cooling water pipe 65. The heat sink 62 is fixedly connected to the cooling water pipe 65, and the heat dissipating device is arranged as a whole outside the seat to facilitate heat dissipation to the external environment. The cooling water tank 64 is directly connected to the cooling water pipe 65, and together they constitute a closed path for the cooling water circulation. When the cooling water circulation system 6 is in operation, the circulating pump 63 drives the cooling water to flow in the closed circuit. The heat absorbed by the heat absorbing plate 61 is transferred to the cooling water in the cooling water tank 64. The heat-carrying cooling water flows through the cooling water pipe 65 to the heat dissipation device, where it dissipates the heat through the heat sink 62. The cooled cooling water then flows back to the cooling water tank 64, and the cycle repeats. The cooling water circulation system 6 can continuously remove heat from the seat, allowing the seat to maintain a suitable temperature for a long time, effectively improving the seat's comfort. The seat backrest 1 includes a lumbar area 73 and a thoracic area 74. The container cover 52 of the lumbar area 73 is smaller than that of the thoracic area 74, making the support adjustment units 5 in the lumbar area 73 less dense, allowing posture adjustment to better fit the human body and provide stronger lumbar support. The footrest 4 is also equipped with multiple support adjustment units 5, which can dynamically adjust the posture according to leg pressure, improving the overall comfort of the zero-gravity posture.

[0028] From the outside in, the seat body consists of a fixed outer layer, an elastic filling layer, a support layer, and the main seat frame. The fixed outer layer is made of high-grade leather or breathable fabric, providing a comfortable feel and aesthetic appeal. The elastic filling layer is constructed of slow-rebound memory foam, enhancing cushioning and fit, while also improving tactile comfort. The main seat frame is a high-strength alloy frame, providing overall structural support. The support layer is composed of multiple independent support adjustment units 5. The container cover 52 is connected to the elastic filling layer, and the bottom of the container 51 is fixed to the main seat frame.

[0029] The specific implementation process is as follows: When an occupant takes a seat, their body weight acts on the backrest 1 and seat cushion 2. This pressure is transmitted to each container cover 52 through the fixed outer layer and the elastic filling layer. This pressure causes the container cover 52 to move downward, compressing the spring 55 and pushing the movable rod 56 downward. Because the seating process is slow, the non-Newtonian fluid 505 in the lower chamber 504 maintains a low viscosity, allowing the movable rod 56 to move downward smoothly.

[0030] At the same time, boss 57 on movable rod 56 descends and contacts pressure sensor 54. The sensor detects the pressure in this area in real time and transmits the data to the control system. Based on the pressure distribution of each unit, the system dynamically adjusts the current in the corresponding coil 503. For higher pressure areas like the lumbar protrusion and ischial tuberosity, the current is reduced, reducing the viscosity of the magnetorheological fluid 502 and increasing the downward movement of movable rod 56, providing stronger support. For lower pressure areas like the lower back, the current is increased, increasing the viscosity of the magnetorheological fluid 502 and limiting the downward movement of movable rod 56, preventing excessive displacement. This adjustment ultimately creates a support surface that closely matches the occupant's body shape, completely eliminating any overhanging areas.

[0031] During long rides, passengers inevitably adjust their sitting posture slightly. Each micro-movement alters the local pressure distribution. Pressure sensors 54 monitor these changes in real time and provide feedback to the control system. The system continuously fine-tunes the current in each coil 503, adjusting the resistance characteristics of the magnetorheological fluid 502 accordingly. The position of the movable rod 56 is then re-optimized to achieve a continuous, dynamic fit in real time. Users can also adjust the current in coils 503 in specific areas, such as the waist and hips, through the control system interface to change the local support firmness to meet their individual needs.

[0032] When a vehicle travels over bumpy roads, the occupants' bodies experience high-frequency, low-amplitude vibrations. When pressure sensor 54 detects these small, rapid pressure fluctuations, the control system appropriately increases the current in coil 503 to maintain the viscosity of magnetorheological fluid 502 in the medium-to-high range. This allows the movable rod 56 to undergo a small, buffering displacement to absorb vibration energy and enhance comfort, while also providing sufficient resistance to prevent excessive shaking.

[0033] When a vehicle collides, especially a rear-end collision, the occupants will violently hit the seat back 1 due to inertia. The impact causes the pressure sensor 54 to detect a sudden change in pressure, and the control system responds within milliseconds, adjusting the current of all coils 503 to the maximum value. The magnetorheological fluid 502 instantly changes to a high viscosity state, greatly increasing the downward resistance of the movable rod 56. Almost at the same time, due to the instantaneous nature and high strain rate of the impact load, the viscosity of the non-Newtonian fluid 505 in the lower chamber 504 increases sharply, exhibiting similar solid properties, preventing the movable rod 56 from moving. The magnetorheological fluid 502 and the non-Newtonian fluid 505 work together to form a dual rigidity effect, allowing the entire support layer to quickly transform into a rigid support body, effectively preventing excessive deformation of the backrest 1. At the same time, since the depth of the lower chamber 504 of the support adjustment unit 5 of the seat cushion 2 decreases gradually from the buttocks pad 71 to the thigh pad 72, in extreme cases if the system loses power, the differentiated downward movement of the movable rod 56 will reduce the angle between the torso and the thigh, further inhibiting the occupant's body from sliding along the seat, and working in conjunction with the seat belt to maximize occupant safety.

[0034] The above are only embodiments of the present invention. The invention is not limited to the fields involved in this implementation case. Common knowledge such as the known specific structures and characteristics in the scheme is not described in detail here. Ordinary technicians in the relevant field are aware of all common technical knowledge in the technical field to which the invention belongs before the application date or priority date, can obtain all existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the inspiration given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A safe and comfortable zero-gravity chair, characterized by: The seat comprises a seat body, which includes a backrest, and a plurality of support adjustment units arranged on the backrest. Each support adjustment unit comprises a container, a container cover, a movable rod, and a partition. The container is a cavity with an upper end opening. The partition is fixed to the inner wall of the container. A through hole is provided in the center of the partition. The partition divides the interior of the container into an upper chamber and a lower chamber that are independent of each other. The interior of the upper chamber is filled with magnetorheological fluid, the coil is arranged outside the upper chamber, and the interior of the lower chamber is filled with non-Newtonian fluid. The movable rod passes through the upper chamber and the lower chamber and is slidably sealed with the through hole of the partition. The two ends of the spring are respectively fixed to the container cover and one end of the movable rod. A boss is provided between the spring and the movable rod. The height of the boss is less than the natural extension length of the spring. The boss is fixed to the movable rod. A pressure sensor is provided on the side of the container cover facing the boss. It also includes a control system of the seat body, the control system is connected to the pressure sensor signal, and the control system is electrically connected to the coil.

2. A safe and comfortable zero-gravity chair according to claim 1, characterized in that: The seat body also includes a seat cushion, on which a plurality of support adjustment units are arranged.

3. A safe and comfortable zero-gravity chair according to claim 2, characterized in that: The shape of the container cover is one or more combinations of circular, polygonal and irregular shapes. The seat cushion includes a buttocks pad and a thigh pad. The upper surfaces of the buttocks pad container covers are set to be concave structures that adapt to the buttocks curve of the human body.

4. A safe and comfortable zero-gravity chair according to claim 3, characterized in that: The support and adjustment unit for the buttocks of the seat cushion has a lower chamber whose height is 1.5 times or more than that of the upper chamber.

5. The safe and comfortable zero-gravity chair according to claim 3, characterized in that: The depth of the lower chamber of the seat cushion container decreases gradually from the support adjustment unit of the seat cushion in the direction of the buttocks to the thighs.

6. The safe and comfortable zero-gravity chair according to claim 1, characterized in that: The backrest of the seat includes a lumbar area and a thoracic area, and the container cover area of ​​the lumbar area is smaller than that of the thoracic area.

7. The safe and comfortable zero-gravity chair according to claim 1, characterized in that: A cooling water circulation system is provided inside the seat, which includes a heat absorption device, a heat dissipation device and a circulation pump. The circulation pump is connected between the heat absorption device and the heat dissipation device. The heat absorption device includes a heat absorption plate and a cooling water tank. The heat absorption plate is fixedly connected to the cooling water tank, and the heat absorption plate is arranged between adjacent support adjustment units. The heat dissipation device includes a heat sink and a cooling water pipe. The heat sink is fixedly connected to the cooling water pipe, and the heat dissipation device is arranged as a whole outside the seat. The cooling water tank is directly connected to the cooling water pipe, together forming a closed path for cooling water circulation.

8. The safe and comfortable zero-gravity chair according to claim 1, characterized in that: The seat body also includes a fixed outer layer, an elastic filling layer, a support layer and a main frame of the seat, wherein the fixed outer layer, the elastic filling layer and the support layer are connected in sequence from the outside to the inside, a number of support adjustment units constitute the support layer, the container cover is connected to the elastic filling layer, and the bottom of the container is fixed to the main frame of the seat.

9. The safe and comfortable zero-gravity chair according to claim 1, characterized in that: The seat body also includes a headrest and a footrest, and the footrest is provided with a number of support adjustment units.

10. A vehicle, characterized in that: The vehicle comprises a vehicle body, in which the zero-gravity seat according to any one of claims 1 to 9 is installed.

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