Automobile seat combining folding mode and zero-gravity mode

Abstract

The invention relates to the technical field of automobile seats, and discloses an automobile seat with both a folding mode and a zero-gravity mode. The backrest is rotatably arranged on the mounting bottom frame; the seat cushion is movably arranged on the mounting bottom frame through the connecting rod group, and the connecting rod group comprises a front connecting rod, a rear connecting rod and a zero-gravity connecting rod; the zero-gravity driving module is arranged between the mounting bottom frame and the zero-gravity connecting rod, and the zero-gravity driving module can drive the zero-gravity connecting rod to rotate to lift the front end of the seat cushion; the lifting driving module is arranged between the seat cushion and the rear connecting rod and can drive the rear connecting rod to rotate so as to enable the seat cushion to do lifting motion. The automobile seat has the advantages that the problem that the backrest does not abut against the waist along with linkage of the seat cushion can be effectively solved, and the requirements for comfort in a folding mode and a zero-gravity mode are met.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, and in particular to an automobile seat that takes into account both a folding mode and a zero-gravity mode. Background Art

[0002] As users' requirements for car seat comfort become higher and higher, there are more and more car seat configuration modes, such as: large lying mode (i.e. large bed mode), zero gravity mode and folding mode. Users can switch the car seat mode according to different usage scenarios.

[0003] When the car seat is switched to the reclining mode, if the pivot point of the backrest is too high, it will cause the passenger's waist to be pushed up in the reclining position. That is, when the passenger lies on the car seat in the reclining position, the passenger's waist will be pushed up, affecting the passenger's comfort.

[0004] In existing folding car seats, if the backrest tilt adjustment and folding rotation centers are the same, the backrest will not be folded flat (the backrest is likely to interfere with the seat cushion) and will occupy a large Z-direction space. If the backrest tilt adjustment and rotation centers are two different centers, it can effectively ensure that the backrest can be folded flat on the seat cushion, but the Z-direction space occupied after folding is still large and cannot be arranged in a compact car.

[0005] For example, the publication number "CN116620123A" discloses a car seat and a car having the same. The car seat takes into account both the folding mode and the zero-gravity mode. When switching to the zero-gravity mode, the four-bar linkage mechanism of the seat cushion is driven by the rotation of the backrest to tilt the seat cushion. However, the inclination angle of the seat cushion is small and it is impossible to achieve a true zero-gravity posture; the height or angle of the seat cushion cannot be adjusted separately, and the comfort is poor. After the car seat is folded, it occupies a large Z-direction space and cannot be used in compact cars.

[0006] For example, publication number "CN221519391U" discloses a seat frame structure for large-angle folding. In this car seat, the rotation center of the backrest is changed from one to two, namely, one tilt adjustment rotation center and one folding rotation center. Its structure is complex and costly, and the Z-direction space occupied by the car seat after folding is still large. Summary of the invention

[0007] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a car seat that has good comfort, occupies little Z-direction space after folding, and has a wide range of applications, taking into account both folding mode and zero-gravity mode.

[0008] The technical solution adopted by the present invention to solve the technical problem is to provide a car seat that takes into account both the folding mode and the zero-gravity mode, which is configured with the folding mode and the zero-gravity mode. The car seat comprises: Install the chassis; A backrest rotatably disposed on the mounting base; A seat cushion and a connecting rod group, wherein the seat cushion is movably arranged on the mounting frame through the connecting rod group, the connecting rod group includes a front connecting rod, a rear connecting rod and a zero-gravity connecting rod, and the zero-gravity connecting rod is rotatably arranged on the mounting frame; one end of the front connecting rod is rotatably connected to the seat cushion, and the other end thereof is rotatably connected to the zero-gravity connecting rod; one end of the rear connecting rod is rotatably connected to the seat cushion, and the other end thereof is rotatably connected to the mounting frame; A zero-gravity drive module and a lifting drive module, wherein the zero-gravity drive module is arranged between the mounting base and the zero-gravity connecting rod, and the zero-gravity drive module can drive the zero-gravity connecting rod to rotate to lift the front end of the seat cushion; the lifting drive module is arranged between the seat cushion and the rear connecting rod, and the lifting drive module can drive the rear connecting rod to rotate to make the seat cushion move up and down.

[0009] Further, when the car seat is in the design position, the car seat is in a sitting mode; When the car seat switches from the design position to the folding mode, the zero-gravity drive module does not move, the zero-gravity link restricts the lower end of the front link to the mounting base, and the front link can rotate along its lower end.

[0010] Furthermore, when the car seat switches from the design position to the folding mode, the zero-gravity link restricts the lower end of the front link to the mounting base, and the mounting base, the front link, the rear link and the seat cushion form a four-bar mechanism, and the lifting drive module drives the rear link to rotate, driving the seat cushion to move from the rear end to the front end.

[0011] Furthermore, a limiting groove is provided on the mounting base, and the front connecting rod and the zero-gravity connecting rod are hingedly connected via a hinge; When the car seat is switched from the design position to the folding mode, the hinge is confined in the limiting groove.

[0012] Furthermore, when the car seat switches to the zero-gravity mode, the lower end of the front link is detached from the mounting frame, and the mounting frame, the zero-gravity link, the front link, the rear link and the seat cushion form a five-link mechanism.

[0013] Further, when the car seat is switched from the design position to the zero gravity mode: The zero-gravity driving module drives the zero-gravity connecting rod to rotate, so as to lift the front end of the seat cushion, and the lifting driving module drives the rear connecting rod to rotate, so as to lift the seat cushion as a whole for a second time.

[0014] Furthermore, the zero-gravity connecting rod includes a rotating shaft, a motor bracket and an articulated frame, the motor bracket and the articulated frame are fixedly connected to the rotating shaft, and the rotating shaft is rotatably arranged on the mounting base, the zero-gravity driving module is rotatably mounted on the motor bracket, and the lower end of the front connecting rod is hinged to the articulated frame.

[0015] Furthermore, the zero-gravity drive module and the lifting drive module each include a screw motor and a screw sleeve, the screw sleeve has an internal thread and is threadedly connected to the screw, and the screw and the screw sleeve form a screw nut mechanism.

[0016] Furthermore, the limiting groove is provided with a sliding guide side wall along the front and rear sides thereof, and the sliding guide side wall is an arc surface or an inclined surface, and the hinge can slide into the limiting groove along the sliding guide side wall.

[0017] Furthermore, a support frame extends upward from the mounting base, the backrest is rotatably mounted on the support frame via a recliner, an angle adjustment motor is provided on the backrest, and the angle adjustment motor can drive the recliner to adjust the inclination angle of the backrest.

[0018] Furthermore, a slide rail is disposed at the bottom of the mounting base, and the base can be slidably arranged forward and backward on the slide rail.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects: In the present invention, the car seat is configured with a folding mode and a zero-gravity mode, and its backrest is directly mounted on the mounting frame, not linked with the seat cushion, and is independent of the movement of the seat cushion. The seat cushion is movably mounted on the mounting frame through a connecting rod group, namely a front connecting rod, a rear connecting rod and a zero-gravity connecting rod. When the car seat is in the design position (sitting state), the lower end of the front connecting rod abuts against the mounting frame, and the mounting frame, the front connecting rod, the rear connecting rod and the zero-gravity connecting rod form a four-link mechanism. When the car seat needs to be switched to the folding mode, the zero-gravity motor and the zero-gravity connecting rod do not move, and the lifting drive module drives the rear connecting rod to rotate, and drives the seat cushion to lift and move through the four-link mechanism. The seat cushion moves from the rear end to the front end, fully saving the Z-direction space, and the backrest can be rotated downward and flat against the seat cushion, so that the Z-direction space occupied by the car seat after folding is small, and it can also be applied to compact models, and has good versatility. When the car seat switches from the design position to the zero-gravity mode, the zero-gravity drive module drives the zero-gravity link to rotate, lifting the front end of the seat cushion, and at this time, the lower end of the front link is detached from the mounting frame, and the mounting frame, zero-gravity link, front link, rear link and seat cushion form a five-link mechanism. The lifting drive module drives the rear link to rotate, and drives the seat cushion to be lifted as a whole (both the front and rear ends of the seat cushion are lifted) through the five-link mechanism, lifting the seat cushion for a second time to ensure that the car seat can achieve a true zero-gravity mode, and lifting the seat cushion can effectively solve the problem of the backrest not being able to move with the seat cushion, that is, the car seat meets the comfort requirements of both the folding mode and the zero-gravity mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the automobile seat of the present invention in a designed position state; Figure 2 for Figure 1 A schematic diagram of the structure from another perspective; Figure 3 for Figure 1 Schematic diagram of the plane; Figure 4 It is a partial cross-sectional view of the four-bar linkage mechanism of the automobile seat in the design position; Figure 5 It is a schematic diagram of the structure of the automobile seat of the present invention when it is in a folding mode; Figure 6 for Figure 5 Schematic diagram of the plane; Figure 7 A partial cross-sectional view of a four-bar linkage mechanism formed for a vehicle seat in a folding mode; Figure 8 It is a schematic structural diagram of the automobile seat of the present invention when it is in zero gravity mode; Fig. 9 for Figure 8 Schematic diagram of the plane; Fig.10A partial cross-sectional view of a five-bar linkage mechanism forming a car seat in zero-gravity mode.

[0021] In the figure: 1. Install the base frame; 101. Limiting groove; 101. Guide sliding side wall; 11. Support frame; 2. Backrest; 20. Angle adjustment motor; 21. Angle adjuster; 3. Seat cushion; 4. connecting rod assembly; 41. front connecting rod; 410. hinge; 42. rear connecting rod; 43. zero gravity connecting rod; 431. rotating shaft; 432. motor bracket; 433. articulated frame; 5. Zero gravity drive module; 560. Screw motor; 561. Screw sleeve; 6. Lifting drive module; 7. Slide rail. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0023] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] like Figure 1-Figure 3 , Figure 5-Figure 6 as well as Figure 8-Figure 9 As shown, a car seat of this embodiment that takes into account both folding mode and zero gravity mode is configured with a folding mode and a zero gravity mode. When in the design position, the car seat is in a sitting state, and the passenger can sit upright on the car seat. When the car seat needs to be folded, the car seat can be switched to the folding mode to reduce the space occupied by the car seat. The car seat can also be switched to the zero gravity mode, and the passenger can lie on the car seat to rest.

[0028] The car seat of this embodiment mainly includes: an installation base frame 1, a backrest 2, a seat cushion 3, a connecting rod group 4, a zero-gravity drive module 5 and a lifting drive module 6, wherein the connecting rod group 4 mainly includes a front connecting rod 41, a rear connecting rod 42 and a zero-gravity connecting rod 43, and the zero-gravity drive module 5 and the lifting drive module 6 both include a threaded rod motor 560 and a threaded rod sleeve 561.

[0029] The mounting frame 1 supports the overall weight of the car seat and includes two parts that are spaced apart. A slide rail 7 is also provided at the bottom of the mounting frame 1, and a slide rail 7 is provided at each bottom of the two spaced apart parts of the mounting frame 1, so that the overall car seat can slide forward and backward along the slide rail 7.

[0030] The backrest 2 is rotatably arranged on the mounting frame 1. Specifically, a support frame 11 extends upward from the mounting frame 1. A support frame 11 extends upward from each of the two sides of the mounting frame 1. The support frame 11 is fixedly connected to the mounting frame 1 and can be regarded as a part of the mounting frame 1. The backrest 2 is rotatably mounted on the support frame 11 through a recliner 21, and an angle adjustment motor 20 is provided on the backrest 2. The angle adjustment motor 20 can drive the recliner 21 to adjust the inclination angle of the backrest 2. A recliner 21 is provided near the left and right sides of the backrest 2. The two recliners 21 are connected by a synchronization rod. The angle adjustment motor 20 drives the synchronization rod, thereby making the two recliners 21 work and adjusting the angle of the backrest 2. In this embodiment, the backrest 2 is directly mounted on the mounting frame 1, is not linked with the seat cushion 3, and is independent of the seat cushion 3 in action.

[0031] The seat cushion 3 and the connecting rod group 4 are movably arranged on the mounting frame 1 through the connecting rod group 4. The connecting rod group 4 includes a front connecting rod 41, a rear connecting rod 42 and a zero gravity connecting rod 43. The zero gravity connecting rod 43 is rotatably arranged on the mounting frame 1; one end of the front connecting rod 41 is rotatably connected to the seat cushion 3, and the other end thereof is rotatably connected to the zero gravity connecting rod 43; one end of the rear connecting rod 42 is rotatably connected to the seat cushion 3, and the other end thereof is rotatably connected to the mounting frame 1. Among them, the number of the front connecting rods 41 is two, which are symmetrically connected to the left and right sides of the front end of the seat, and the number of the rear connecting rods 42 is also two, which are symmetrically connected to the left and right sides of the rear end of the seat cushion 3. In actual use, the seat cushion 3 can form a four-bar linkage mechanism with the connecting rod group 4 and the mounting frame 1, or a five-bar linkage mechanism, which can be selected according to the mode to be switched to the car seat.

[0032] Zero gravity drive module 5 and lifting drive module 6, zero gravity drive module 5 is arranged between mounting frame 1 and zero gravity connecting rod 43, and zero gravity drive module 5 can drive zero gravity connecting rod 43 to rotate, and lift the front end of seat cushion 3. That is, zero gravity drive module 5 mainly works when the car seat is switched to zero gravity mode. Lifting drive module 6 is arranged between seat cushion 3 and rear connecting rod 42, and lifting drive module 6 can drive rear connecting rod 42 to rotate, so that seat cushion 3 can be lifted and lowered. In zero gravity mode and folding mode, lifting drive module 6 of seat cushion 3 works, so that seat cushion 3 can be lifted and lowered. In this embodiment, zero gravity drive module 5 and lifting drive module 6 both include a screw motor 560 and a screw sleeve 561, screw sleeve 561 has internal thread and is threadedly connected with screw, and screw and screw sleeve 561 form a screw nut mechanism.

[0033] like Figure 1-Figure 4 and Figure 5-Figure 7As shown, the process of switching the car seat from the design position (sitting state) to the folding mode is as follows: when the car seat is in the design position, the car seat is in the sitting mode, and the passenger can sit on the car seat in a normal posture. The lower end of the front link 41 is hinged to the zero gravity link 43 through a hinge 410. In the design position, the hinge 410 rests on the mounting base 1. When the car seat switches from the design position to the folding mode, the zero-gravity drive module 5 does not move, and the zero-gravity link 43 restricts the lower end of the front link 41 to the mounting base 1, that is, the hinge 410 is restricted to the mounting base 1, and the front link 41 can rotate along its lower end. At this time, the hinge 410 rests on the mounting base 1, and the zero-gravity drive module 5 and the zero-gravity link 43 do not move. The mounting base, the front link 41, the rear link 42 and the seat cushion 3 form a four-bar mechanism, and the lifting drive module 6 drives the rear link 42 to rotate, driving the seat cushion 3 to move from the rear end to the front end. Specifically, the screw of the screw motor 560 in the lifting drive module 6 rotates, so that the screw sleeve 561 matched therewith moves along the screw, that is, the overall length of the lifting drive module 6 becomes longer, and the rear connecting rod 42 rotates, driving the seat cushion 3 to move from the rear end to the front end through the four-bar mechanism. The seat cushion 3 is first lifted from the rear end and then lowered to the front end until it reaches the frontmost position. The seat cushion 3 stops at the frontmost and lowermost positions, and the angle adjustment motor 20 on the backrest 2 drives the synchronization rod to rotate, driving the two angle adjusters 21 to work, so that the backrest 2 rotates toward the side of the seat cushion 3 until it leans against the seat cushion 3 and reaches the lowest state. At this time, the space occupied by the car seat after folding is minimized.

[0034] Among them, a limit groove 101 is provided on the mounting base, and the front connecting rod 41 is hinged with the zero gravity connecting rod 43 through a hinge 410. The limit groove 101 is provided with a guide sliding side wall 101 along its front and rear sides, and the guide sliding side wall 101 is an arc surface or an inclined surface. The hinge 410 can slide into the limit groove 101 along the guide sliding side wall 101, ensuring that the car seat can switch between various modes smoothly without jamming.

[0035] The zero-gravity connecting rod 43 of this embodiment includes a rotating shaft 431, a motor bracket 432 and an articulated frame 433. The motor bracket 432 and the articulated frame 433 are fixedly connected to the rotating shaft 431, and the rotating shaft 431 is rotatably arranged on the mounting base 1. The zero-gravity driving module 5 is rotatably mounted on the motor bracket 432. The lower end of the front connecting rod 41 is hinged to the articulated frame 433. There are two articulated frames 433. The two articulated frames 433 are respectively articulated to the two front connecting rods 41 through the hinges 410. Two limiting grooves 101 corresponding to the two hinges 410 are arranged on the mounting base 1. The two limiting grooves 101 can allow the two hinges 410 to slide in and out.

[0036] like Figure 1-Figure 4 and Figure 8-Figure 10As shown, the process of switching the car seat from the design position (sitting state) to the zero gravity mode is as follows: when the car seat is in the design position, the car seat is in the sitting mode, and the passenger can sit on the car seat in a normal posture. The lower end of the front connecting rod 41 is hinged to the zero gravity connecting rod 43 through a hinge 410. When in the design position, the hinge 410 rests on the mounting base 1. When the car seat switches from the design position to the zero gravity mode, the lead screw motor 560 in the zero gravity drive module 5 drives the lead screw to rotate. The lead screw is threadedly transmitted with the lead screw sleeve 561 thereon, and the lead screw sleeve 561 is fixed on the mounting base 1. Therefore, the lead screw motor 560 in the zero gravity drive module 5 will move away from its lead screw sleeve 561, driving the zero gravity connecting rod 43 to rotate, and its rotation center is the center of the rotating shaft 431. The rotation of the zero gravity connecting rod 43 will turn the articulated frame 4 33 is lifted, that is, the hinge 410 and the lower end of the front connecting rod 41 are lifted. At this time, the mounting base 1, the zero gravity connecting rod 43, the front connecting rod 41, the rear connecting rod 42 and the seat cushion 3 are installed to form a five-link mechanism, and the zero gravity driving module 5 drives the zero gravity connecting rod 43 to rotate to lift the front end of the seat cushion 3. This is the first lifting, and the lifting driving module 6 drives the rear connecting rod 42 to rotate to lift the seat cushion 3 as a whole for the second time. That is, during the second lifting, both the front and rear ends of the seat cushion 3 are lifted.

[0037] In this embodiment, the seat cushion 3 is movably mounted on the mounting base 1 through a connecting rod group 4, namely a front connecting rod 41, a rear connecting rod 42 and a zero-gravity connecting rod 43. When the car seat is in the designed position (sitting state), the lower end of the front connecting rod 41 abuts against the mounting base 1, and the mounting base 1, the front connecting rod 41, the rear connecting rod 42 and the zero-gravity connecting rod 43 form a four-bar mechanism. When the car seat needs to be switched to the folding mode, the zero-gravity motor and the zero-gravity connecting rod 43 do not move, and the lifting drive module 6 drives the rear connecting rod 42 to rotate, and drives the seat cushion 3 to lift and lower through the four-bar mechanism. The seat cushion 3 moves from the rear end to the front end, which fully saves the Z-direction space. The backrest 2 can be rotated downward and rest flat on the seat cushion 3, so that the Z-direction space occupied by the car seat after folding is small, and it can also be applied to compact vehicles, with good versatility. When the car seat switches from the design position to the zero gravity mode, the zero gravity drive module 5 drives the zero gravity link 43 to rotate, lifts the front end of the seat cushion 3, and at this time, the lower end of the front link 41 is detached from the mounting base 1, and the mounting base 1, the zero gravity link 43, the front link 41, the rear link 42 and the seat cushion 3 form a five-link mechanism, and the lifting drive module 6 drives the rear link 42 to rotate, and drives the seat cushion 3 to be lifted as a whole (both the front and rear ends of the seat cushion 3 are lifted) through the five-link mechanism, and lifts the seat cushion 3 twice to ensure that the car seat can achieve a true zero gravity mode, and lifting the seat cushion 3 can effectively solve the problem of the backrest 2 not being able to move with the seat cushion 3. That is, the car seat of this embodiment takes into account the comfort requirements in both the folding mode and the zero gravity mode, and has good comfort.

Claims

1. A car seat with both folding mode and zero gravity mode, configured with a folding mode and a zero gravity mode, characterized in that , the car seat comprises: Install the chassis; A backrest rotatably disposed on the mounting base; A seat cushion and a connecting rod group, wherein the seat cushion is movably arranged on the mounting frame through the connecting rod group, the connecting rod group includes a front connecting rod, a rear connecting rod and a zero-gravity connecting rod, and the zero-gravity connecting rod is rotatably arranged on the mounting frame; one end of the front connecting rod is rotatably connected to the seat cushion, and the other end thereof is rotatably connected to the zero-gravity connecting rod; one end of the rear connecting rod is rotatably connected to the seat cushion, and the other end thereof is rotatably connected to the mounting frame; A zero-gravity drive module and a lifting drive module, wherein the zero-gravity drive module is arranged between the mounting base and the zero-gravity connecting rod, and the zero-gravity drive module can drive the zero-gravity connecting rod to rotate to lift the front end of the seat cushion; the lifting drive module is arranged between the seat cushion and the rear connecting rod, and the lifting drive module can drive the rear connecting rod to rotate to make the seat cushion move up and down.

2. The car seat having both folding mode and zero gravity mode according to claim 1, characterized in that: When the car seat is in the design position, the car seat is in a sitting mode; When the car seat switches from the design position to the folding mode, the zero-gravity drive module does not move, the zero-gravity link restricts the lower end of the front link to the mounting base, and the front link can rotate along its lower end.

3. The car seat having both folding mode and zero gravity mode according to claim 2, characterized in that: When the car seat switches from the design position to the folding mode, the zero-gravity link restricts the lower end of the front link to the mounting base, and the mounting base, the front link, the rear link and the seat cushion form a four-bar mechanism, and the lifting drive module drives the rear link to rotate, driving the seat cushion to move from the rear end to the front end.

4. The car seat having both folding mode and zero gravity mode according to claim 2 or 3, characterized in that: The mounting base is provided with a limiting groove, and the front connecting rod and the zero-gravity connecting rod are hingedly connected via a hinge; When the car seat is switched from the design position to the folding mode, the hinge is confined in the limiting groove.

5. The car seat having both folding mode and zero gravity mode according to claim 2 or 3, characterized in that: When the car seat switches to the zero-gravity mode, the lower end of the front link is detached from the mounting frame, and the mounting frame, the zero-gravity link, the front link, the rear link and the seat cushion form a five-link mechanism.

6. The car seat having both folding mode and zero gravity mode according to claim 5, characterized in that: When the car seat switches from the design position to the zero gravity mode: The zero-gravity driving module drives the zero-gravity connecting rod to rotate, so as to lift the front end of the seat cushion, and the lifting driving module drives the rear connecting rod to rotate, so as to lift the seat cushion as a whole for a second time.

7. The car seat having both folding mode and zero gravity mode according to claim 1, characterized in that: The zero-gravity connecting rod includes a rotating shaft, a motor bracket and an articulated frame. The motor bracket and the articulated frame are fixedly connected to the rotating shaft, and the rotating shaft is rotatably arranged on the mounting base. The zero-gravity driving module is rotatably mounted on the motor bracket, and the lower end of the front connecting rod is hinged to the articulated frame.

8. The car seat having both folding mode and zero gravity mode according to claim 1 or 7, characterized in that: The zero-gravity drive module and the lifting drive module both include a screw motor and a screw sleeve. The screw sleeve has an internal thread and is threadedly connected to the screw. The screw and the screw sleeve form a screw nut mechanism.

9. The car seat having both folding mode and zero gravity mode according to claim 4, characterized in that: The limiting groove is provided with a guide sliding side wall along the front and rear sides thereof, respectively. The guide sliding side wall is an arc surface or an inclined surface, and the hinge can slide into the limiting groove along the guide sliding side wall.

10. The car seat having both folding mode and zero gravity mode according to claim 1, characterized in that: A support frame extends upward from the mounting base, and the backrest is rotatably mounted on the support frame through a recliner. An angle adjustment motor is provided on the backrest, and the angle adjustment motor can drive the recliner to adjust the inclination angle of the backrest.

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