Automobile seat and automobile having the same

Abstract

The present application relates to a car seat and a car with the same. The car seat comprises a mounting bracket, a linkage mechanism arranged on the mounting bracket, a seat cushion connected with the linkage mechanism, a backrest pivotally connected with the mounting bracket and having a flat position abutting on the seat cushion, a zero-gravity position away from the seat cushion and a critical position between the flat position and the zero-gravity position, and a driving mechanism connected with the backrest to drive the backrest to switch between the flat position, the critical position and the zero-gravity position. When the backrest switches between the zero-gravity position and the critical position, the driving mechanism matches the linkage mechanism to lift or lower the seat cushion in linkage. When the backrest switches between the critical position and the flat position, the driving mechanism is disengaged from the linkage mechanism to allow the backrest to rotate independently. The car seat can realize the functions of zero-gravity and large storage at the same time, and has simple structure and significantly reduced processing cost.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and more particularly to automotive seats and automobiles having them. Background Technology

[0002] Car seats are the seats in a car for drivers and passengers, providing a comfortable and safe seating position and are one of the important components of a vehicle. With the development of intelligent cockpits, car seats are being given more and more functions.

[0003] Currently, car seats generally include components such as seat cushions, backrests, headrests, and armrests. To improve the comfort of car seats, the position of the seat cushion and the angle of the backrest are mostly adjustable in existing technologies. To achieve the folding of the backrest relative to the seat cushion, existing technologies (such as Chinese Utility Model Patent CN2343026Y) disclose a car seat with a backrest that can be laid flat backwards. To further improve the comfort of car seats, existing technologies (such as Chinese Invention Patent CN112977187B) disclose a zero-gravity car seat. This zero-gravity car seat includes a backrest assembly, a seat cushion assembly, and a backrest rotation motor. The seat cushion assembly includes components such as an adjuster assembly, a seat cushion wall assembly, a rear cross tube assembly, a slide rail assembly, a front linkage assembly, a zero-gravity adjustment linkage assembly, a height adjustment motor, and a zero-gravity adjustment motor. This zero-gravity car seat utilizes a pivotally connected seat cushion panel assembly, rear cross tube assembly, slide rail assembly, front linkage assembly, and zero-gravity adjustment linkage assembly to achieve seat cushion height and rotation adjustment. An adjuster assembly enables the rotation and locking of the backrest assembly. Together, these components achieve zero-gravity adjustment of the car seat. The backrest assembly can also be folded independently relative to the seat cushion assembly. However, this zero-gravity car seat has a complex structure and high manufacturing costs.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] To address the technical problem of complex structures in existing car seats that combine reclining and zero-gravity functions, this invention provides a car seat. The car seat includes: a mounting bracket with a linkage mechanism on it; a seat cushion connected to the linkage mechanism; a backrest pivotally connected to the mounting bracket and having a reclining position against the seat cushion, a zero-gravity position away from the seat cushion, and a critical position between the reclining and zero-gravity positions; and a drive mechanism connected to the backrest to drive the backrest to switch between the reclining, critical, and zero-gravity positions. When the backrest switches between the zero-gravity and critical positions, the drive mechanism and the linkage mechanism work together to raise or lower the seat cushion; when the backrest switches between the critical and reclining positions, the drive mechanism disengages from the linkage mechanism to allow the backrest to rotate independently.

[0006] Those skilled in the art will understand that the automotive seat of this invention includes a mounting bracket, a seat cushion, a backrest, and a drive mechanism. A linkage mechanism is provided on the mounting bracket, and the seat cushion is connected to the mounting bracket. A pivotal connection is formed between the backrest and the mounting bracket, and the backrest has a flat position, a critical position, and a zero-gravity position. When the backrest is in the flat position, it rests against the seat cushion; when the backrest is in the zero-gravity position, it moves away from the seat cushion; and the critical position is located between the flat position and the zero-gravity position. The drive mechanism is connected to the backrest to drive the backrest to switch between the flat position, the critical position, and the zero-gravity position. When the backrest switches between the zero-gravity position and the critical position, the drive mechanism can engage with the linkage mechanism to control the seat cushion to rise or fall in conjunction, thereby meeting the user's comfort requirements. When the backrest switches between the critical position and the flat position, the drive mechanism disengages from the linkage mechanism, allowing the backrest to rotate independently of the seat cushion, achieving a flat backrest facing forward (i.e., towards the seat cushion), to meet the user's need for ample storage (or sleeping). Therefore, the car seat of the present invention, through the "clutch engagement" of the drive mechanism and the linkage mechanism, can not only simultaneously achieve the functions of zero gravity and large storage, but also has a simple structure, compact design, and greatly reduces the processing cost.

[0007] In the preferred embodiment of the aforementioned car seat, when the backrest is in the zero-gravity position, the seat cushion is in a raised position at a predetermined angle to the horizontal; and when the backrest is in the critical position or the flat position, the seat cushion is in a horizontal position parallel to the horizontal direction. The seat cushion being in a raised position at a predetermined angle to the horizontal when the backrest is in the zero-gravity position satisfies the "zero-gravity" angle design requirement. Furthermore, the seat cushion being in a horizontal position when the backrest is in the critical position ensures that the user maintains a stable sitting posture while seated in the car seat. Further, the seat cushion also being in a horizontal position when the backrest is in the flat position provides stable support for the backrest.

[0008] In the preferred technical solution of the above-mentioned car seat, when the backrest is in the zero-gravity position, the angle formed by the backrest and the vertical direction is 60°, and the range of the predetermined angle is 15°-30°, so as to meet the angle design requirements of zero gravity.

[0009] In the preferred embodiment of the aforementioned car seat, the drive mechanism includes an active gear plate rotatably fixed to the mounting bracket to drive the backrest rotation, with a first tooth formed at one end of the active gear plate; and the linkage mechanism includes a driven gear plate rotatably fixed to the mounting bracket, with a second tooth formed at one end of the driven gear plate, wherein the second tooth engages with the first tooth when the backrest transitions between the zero-gravity position and the critical position; and the second tooth disengages from the first tooth when the backrest transitions between the critical position and the flat position. The active gear plate for driving the backrest rotation can both engage with the driven gear plate to control the linkage mechanism and disengage from the driven gear plate to allow independent control of the backrest rotation. Furthermore, the arrangement of the active and driven gear plates results in a simple structure and compact design.

[0010] In the preferred embodiment of the aforementioned car seat, a third tooth is formed at the end of the driven toothed plate away from the second tooth, and the linkage mechanism further includes: a first link, which is rotatably fixed to the mounting bracket, a fourth tooth at one end of the first link engaging with the third tooth, and the other end of the first link pivotally connected to the seat cushion. The engagement of the third and fourth teeth converts the independent rotation of the driving toothed plate into the linkage of the linkage mechanism, thereby raising or lowering the seat cushion.

[0011] In the preferred embodiment of the aforementioned car seat, the linkage mechanism further includes a second linkage, which is spaced apart from the first linkage. One end of the second linkage is pivotally connected to the mounting bracket, and the other end is pivotally connected to the seat cushion. The second linkage allows the linkage mechanism and seat cushion to form a more stable four-bar linkage structure, thereby ensuring more stable raising or lowering of the seat cushion.

[0012] In the preferred embodiment of the aforementioned car seat, the seat cushion includes a seat cushion body and a bottom support connected to each other, with the first connecting rod and the second connecting rod respectively connected to the bottom support. This configuration allows the seat cushion to have a simple structure and be easy to manufacture.

[0013] In the preferred embodiment of the aforementioned car seat, a baffle is further provided on the mounting bracket. When the backrest transitions between the zero-gravity position and the critical position, the driven toothed plate disengages from the baffle; when the backrest transitions between the critical position and the flat position, the driven toothed plate abuts against the baffle. The baffle allows the driven toothed plate to have a stable movement position, enabling engagement and disengagement with the driving toothed plate.

[0014] In the preferred embodiment of the aforementioned car seat, an elastic element is further provided between the driven toothed plate and the mounting bracket. This elastic element is configured to apply a pre-applied elastic force to the driven toothed plate, propelling it toward the baffle. The elastic element allows the driven toothed plate to be stably positioned on the baffle.

[0015] To address the technical problem of complex structures in existing car seats that combine backrest folding and zero-gravity functions, this invention provides a car. This car includes a car seat according to any of the preceding claims. By employing a car seat as described above, the car of this invention can simultaneously achieve zero-gravity and large storage functions, and its simple structure significantly reduces manufacturing costs. Attached Figure Description

[0016] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0017] Figure 1 This is a schematic diagram of an embodiment of the present invention where the backrest of the car seat is in a critical position;

[0018] Figure 2 This is a schematic diagram of an embodiment of the present invention in which the backrest of the car seat is in a zero-gravity position;

[0019] Figure 3 This is a schematic diagram of an embodiment of the present invention in which the backrest of the car seat is in a flat position;

[0020] Figure 4 This is a schematic diagram of the structure of an embodiment of the active toothed plate and the driven toothed plate of the present invention when the backrest of the car seat is in a critical position;

[0021] Figure 5 This is a schematic diagram of the structure of the active toothed plate and the driven toothed plate of an embodiment of the present invention when the backrest of the car seat is in the flat position;

[0022] Figure 6 This is a schematic diagram of an embodiment of the drive mechanism for the car seat of the present invention.

[0023] List of reference numerals in the attached diagram:

[0024] 1. Car seat; 10. Mounting bracket; 11. Mounting bracket body; 12. Linkage mechanism; 121. Driven gear plate; 1211. Driven gear plate body; 1212. Second tooth; 1213. Third tooth; 122. First link; 1221. First link body; 1222. Fourth tooth; 123. Second link; 1231. Second link body; 13. Baffle; 14. Elastic element; 20. Seat cushion; 21. Seat cushion body; 22. Bottom bracket; 221. First connecting part; 222. Second connecting part; 30. Backrest; 31. Backrest body; 32. Transverse column; 40. Drive mechanism; 41. Driving gear plate; 411. Driving gear plate body; 412. Central gear; 413. Clamping part; 414. First tooth; 42. Motor; 50. Armrest; 60. Headrest; 70. Slide rail. Detailed Implementation

[0025] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0026] It should be noted that in the description of this invention, terms such as "upper," "lower," "left," "right," "inner," and "outer," indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] To address the technical problem of complex structures in existing car seats that combine reclining and zero-gravity functions, this invention provides a car seat 1. The car seat 1 includes: a mounting bracket 10 with a linkage mechanism 12 on it; a seat cushion 20 connected to the linkage mechanism 12; a backrest 30 pivotally connected to the mounting bracket 10 and having a reclining position against the seat cushion 20, a zero-gravity position away from the seat cushion 20, and a critical position between the reclining and zero-gravity positions; and a drive mechanism 40 connected to the backrest 30 to drive the backrest 30 to switch between the reclining, critical, and zero-gravity positions. When the backrest 30 switches between the zero-gravity and critical positions, the drive mechanism 40 and the linkage mechanism 12 work together to raise or lower the seat cushion 20. When the backrest 30 switches between the critical and reclining positions, the drive mechanism 40 disengages from the linkage mechanism 12 to allow the backrest 30 to rotate independently.

[0029] In this document, unless otherwise stated, the technical term "critical position" refers to the position of the backrest 30 when the drive mechanism 40 and the linkage mechanism 12 transition from a mating state to a disengaged state.

[0030] Figure 1 This is a schematic diagram of an embodiment of the present invention where the backrest of the car seat is in a critical position; Figure 2 This is a schematic diagram of an embodiment of the present invention in which the backrest of the car seat is in a zero-gravity position; Figure 3 This is a schematic diagram of an embodiment of the present invention where the backrest of the car seat is in a flat position. Figures 1-3 As shown, in one or more embodiments, the automobile seat 1 of the present invention includes components such as a mounting bracket 10, a seat cushion 20, a backrest 30, and a drive mechanism 40. A linkage mechanism 12 is provided on the mounting bracket 10, and the seat cushion 20 is connected to the mounting bracket 10 via the linkage mechanism 12. The backrest 30 is pivotally connected to the mounting bracket 10 to flexibly adjust the angle of the backrest 30. The drive mechanism 40 is used to control the rotation of the backrest 30 relative to the mounting bracket 10, and the drive mechanism 40 can both cooperate with the linkage mechanism 12 to raise or lower the seat cushion 20 in conjunction, and can also disengage from the linkage mechanism 12 to allow the backrest 30 to rotate independently.

[0031] like Figures 1-3 As shown, the mounting bracket 10 has a mounting bracket body 11. The mounting bracket body 11 can be made of a suitable metal material such as stainless steel or aluminum alloy to give it good mechanical strength. In one or more embodiments, the car seat 1 of the present invention further includes a slide rail 70, and a slide rod (not shown in the figure) matching the slide rail 70 is provided at the bottom of the mounting bracket body 11, so that the mounting bracket body 11 can be slidably arranged on the slide rail 70, thereby facilitating the adjustment of the fore-and-aft position of the seat cushion 20. Alternatively, the car seat 1 can also use other suitable mechanisms to achieve the fore-and-aft position adjustment of the seat cushion 20, such as a linkage.

[0032] See also Figures 1-3 The linkage mechanism 12 is arranged on the right side of the mounting bracket body 11 (based on the user's orientation when sitting in the car seat 1). Preferably, the linkage mechanism 12 is arranged on the left and right sides of the mounting bracket body 11 respectively to stably raise or lower the seat cushion 20.

[0033] Figure 4 This is a schematic diagram of the structure of an embodiment of the active toothed plate and the driven toothed plate of the present invention when the backrest of the car seat is in a critical position; Figure 5 This is a schematic diagram of an embodiment of the active and driven toothed plates of the automobile seat of the present invention when the backrest is in the flat position. Figure 4 and Figure 5 As shown, the linkage mechanism 12 includes a driven gear plate 121. The driven gear plate 121 has a driven gear plate body 1211. The driven gear plate body 1211 can be made of a suitable metal material (e.g., stainless steel, cast iron, etc.) to give it good mechanical strength. The driven gear plate body 1211 forms a pivotal connection with the mounting bracket body 11. The driven gear plate body 1211 has a generally V-shaped shape. Based on Figure 4 and Figure 5 As shown, a second tooth 1212 is formed at the left end of the driven tooth plate body 1211, and a third tooth 1213 is formed at the right end of the driven tooth plate body 1211. The second tooth 1212 can engage with the first tooth 414 on the driving tooth plate 41 of the drive mechanism 40, while the third tooth 1213 can engage with the fourth tooth 1222 on the first link 122 in the linkage mechanism 12.

[0034] See also Figure 4 and Figure 5 In one or more embodiments, a baffle 13 is further provided on the mounting bracket body 11. The baffle 13 extends vertically outward from the mounting bracket body 11. When the first tooth 414 of the driving toothed plate 41 and the second tooth 1212 of the driven toothed plate 121 disengage (see...), Figure 4The driven toothed plate 121 can abut against the baffle 13 to limit its movement. In one or more embodiments, an elastic element 14 is also provided between the driven toothed plate 121 and the mounting bracket body 11. One end of the elastic element 14 is fixed to the driven toothed plate body 1211, and the other end is fixed to the mounting bracket body 11. The elastic element 14 applies a pre-applied elastic force to the driven toothed plate body 1211, so that the driven toothed plate body 1211 always has a tendency to rotate toward the baffle 13, so as to more firmly constrain the driven toothed plate 121 to the baffle 13. The elastic element 14 can be, but is not limited to, a torsion spring.

[0035] See also Figure 2 The linkage mechanism 12 also includes a first link 122. The first link 122 has a generally rod-shaped first link body 1221. Based on Figure 2 As shown, the left end of the first link body 1221 is rotatably fixed to the mounting bracket body 11, and the right end of the first link body 1221 is rotatably fixed to the seat cushion 20. A fourth tooth 1222 is also formed at the left end of the first link body 1221, meshing with the third tooth 1213 of the driven tooth plate 121. When the driven tooth plate 121 rotates under the drive of the driving tooth plate 41, the driven tooth plate 121 will drive the first link 122 to rotate relative to the mounting bracket body 11, thereby raising or lowering the seat cushion 20.

[0036] See also Figure 2 In one or more embodiments, the linkage mechanism 12 further includes a second link 123 spaced apart from the first link 121. The second link 123 has a generally rod-shaped second link body 1231. Based on Figure 2 As shown, the left end of the second link body 1231 is rotatably fixed to the mounting bracket body 11, and the right end of the second link body 1231 is rotatably fixed to the seat cushion 20. The first link 122, the second link 123, and the seat cushion 20 together form a stable four-bar linkage structure, thereby stably controlling the raising and lowering of the seat cushion 20.

[0037] like Figures 1-3 As shown, in one or more embodiments, the seat cushion 20 includes a seat cushion body 21 and a bottom support 22 connected to each other. The seat cushion body 21 may be manufactured using structures such as a skeleton, foam, and covering. The covering material may be, but is not limited to, fabric, leather, artificial leather, etc. The bottom support 22 may be manufactured using a suitable metal material (e.g., stainless steel) to give it good mechanical strength. The fixing methods between the bottom support 22 and the seat cushion body 21 include, but are not limited to, screwing, welding, etc. The bottom support 22 has a generally inverted U-shaped shape, giving it a simple structure. Figures 1-3As shown, the bottom support 22 has a first connecting portion 221 on the left and a second connecting portion 222 on the right. The right end of the first link 122 of the linkage mechanism 12 is fixed to the first connecting portion 221, while the right end of the second link 123 is fixed to the second connecting portion 222.

[0038] like Figures 1-3 As shown, the backrest 30 has a backrest body 31. The backrest body 31 can be manufactured using a frame, foam, and cover, among other structures. The cover material can be, but is not limited to, fabric, leather, or artificial leather. In one or more embodiments, armrests 50 are also provided on the left and right sides of the backrest body 31 (based on the user's orientation when sitting in the car seat 1) to enhance the comfort of the car seat 1. In one or more embodiments, a headrest 60 is also provided above the backrest body 31 to further enhance the comfort of the car seat.

[0039] Figure 6 This is a schematic diagram of an embodiment of the drive mechanism for a car seat according to the present invention. Figure 6 As shown, in one or more embodiments, the drive mechanism 40 includes a drive gear plate 41 and a motor 42 that mate with each other. The drive gear plate 41 is rotatably fixed to the mounting bracket body 11, while the motor 42 is arranged inside the backrest body 31. The motor 42 mates with the drive gear plate 41 to drive the drive gear plate 41 to rotate relative to the mounting bracket body 11. The motor 42 may be, but is not limited to, a stepper motor, a servo motor, etc.

[0040] See also Figure 4 and Figure 5 In one or more embodiments, the active gear plate 41 has an active gear plate body 411. The active gear plate body 411 can be made of a suitable metal material (e.g., stainless steel, cast iron, etc.) to give it good mechanical strength. A central gear 412 is provided in the middle of the active gear plate body 411. This central gear 412 can be matched with a motor 42, so that when the motor 42 is working, the central gear 412 can rotate clockwise or counterclockwise, thereby driving the entire active gear plate 41 to rotate relative to the mounting bracket body 11. Based on Figure 4As shown, a clamping portion 413 is formed on the upper part of the active toothed plate body 411. An upward-opening U-shaped groove (not shown) is formed on the clamping portion 413, and a vertically extending transverse post 32 is formed on the backrest body 31, which can be inserted into the U-shaped groove. Therefore, when the active toothed plate 41 rotates under the drive of the motor 42, the clamping portion 413 can apply an external force to the transverse post 32, thereby causing the backrest 30 to rotate together, thus achieving angle adjustment of the backrest 30. A first tooth portion 414 is formed on the lower part of the active toothed plate body 411. The first tooth portion 414 can not only mesh with the second tooth portion 1212 of the driven toothed plate 121 to achieve linkage between the backrest 30 and the seat cushion 20, but also disengage from the second tooth portion 1212 to achieve independent flipping of the backrest 30.

[0041] When the car seat 1 of the present invention is in use, the backrest 30 has a flat position that rests against the seat cushion 20 (e.g., Figure 3 As shown), the zero-gravity position away from the seat cushion 20 (such as...) Figure 2 As shown), and the critical position between the flat position and the zero-gravity position (as shown). Figure 1 (As shown). The backrest 30 switches between a flat position, a critical position, and a zero-gravity position via a drive mechanism 40. When the backrest 30 is in the flat position, the seat cushion 20 is in a horizontal position approximately parallel to the horizontal direction, and the backrest 30 is folded forward and rests against the seat cushion 20. At this time, the car seat 1 can meet the user's storage needs for placing large items and also meet the requirements of sleeping scenarios. When the backrest 30 is in the zero-gravity position, the backrest 30 flips backward and moves away from the seat cushion 20. At this time, the angle (or "torso angle") formed by the backrest 30 and the vertical direction is approximately 60°. At the same time, the seat cushion 20 is raised to a raised position forming a predetermined angle with the horizontal direction. This predetermined angle ranges from 15° to 30° to meet the angle design requirements of zero gravity. When the backrest 30 is in the critical position, the critical angle formed by the backrest 30 and the vertical direction is approximately 15° to 20°. If the torso angle is greater than or equal to the critical angle, the driving tooth plate 41 of the drive mechanism 40 meshes with the driven tooth plate 121 of the linkage mechanism 12; if the torso angle is less than the critical angle, the driving tooth plate 41 disengages from the driven tooth plate 121.

[0042] like Figure 1 and Figure 2 As shown, when the backrest 30 switches between the zero-gravity position and the critical position, the driving tooth plate 41 of the drive mechanism 40 meshes with the driven tooth plate 121 of the linkage mechanism 12. When the driving tooth plate 41 rotates under the drive of the motor 42, the driven tooth plate 121 will be driven to rotate together with the driving tooth plate 41, thereby driving the first linkage 122 and the second linkage 123 to lift or lower the seat cushion 20 in a coordinated manner.

[0043] like Figure 1 and Figure 3 As shown, when the backrest 30 switches between the flat position and the critical position, the driving tooth plate 41 of the drive mechanism 40 disengages from the driven tooth plate 121 of the linkage mechanism 12. When the driving tooth plate 41 rotates under the drive of the motor 42, the driven tooth plate 121 does not rotate with the driving tooth plate 41. The driven tooth plate 121 is stably constrained on the baffle 13 under the elastic action of the elastic member 14. At the same time, the seat cushion 20 always remains in a horizontal position that is approximately parallel to the horizontal direction, while the backrest 30 can rotate independently under the drive of the driving tooth plate 41, making it easy to fold forward to flatten or return to the critical position. In addition, when the backrest 30 switches between the flat position and the critical position, the first linkage 122 will be subjected to the gravity of the seat cushion 20, thereby applying an external force to the driven tooth plate 121 through the fourth tooth 1222, forcing the driven tooth plate 121 to always maintain the tendency to rotate toward the baffle 13, so as to more stably pre-set the driven tooth plate 121.

[0044] The present invention also provides an automobile (not shown in the figures). This automobile includes the automobile seat 1 described in any of the above embodiments. The automobile also includes, but is not limited to, components such as wheels, steering wheel, and powertrain. The automobile can be a gasoline-powered vehicle, an electric vehicle, a hybrid vehicle, etc. The automobile can be a sedan, SUV, MPV, or other suitable vehicle type.

[0045] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. An automobile seat characterized by comprising: The automobile seat comprises: a mounting bracket, on which a linkage mechanism is arranged; a seat cushion connected with the linkage mechanism; a backrest pivotally connected with the mounting bracket and having a flat position abutting against the seat cushion, a zero-gravity position away from the seat cushion, and a critical position between the flat position and the zero-gravity position; and a driving mechanism connected with the backrest to drive the backrest to switch between the flat position, the critical position and the zero-gravity position, wherein, when the backrest switches between the zero-gravity position and the critical position, the driving mechanism is matched with the linkage mechanism to lift or lower the seat cushion in linkage; when the backrest switches between the critical position and the flat position, the driving mechanism is disengaged from the linkage mechanism to allow the backrest to rotate independently; wherein, the driving mechanism comprises a driving gear plate rotatably fixed on the mounting bracket to drive the backrest to rotate, and a first gear portion is formed at one end of the driving gear plate; and the linkage mechanism comprises a driven gear plate rotatably fixed on the mounting bracket, and a second gear portion is formed at one end of the driven gear plate, wherein, when the backrest switches between the zero-gravity position and the critical position, the second gear portion is engaged with the first gear portion; when the backrest switches between the critical position and the flat position, the second gear portion is disengaged from the first gear portion.

2. The automobile seat according to claim 1, wherein when the backrest is in the zero-gravity position, the seat cushion is in a lifted position at a predetermined angle with respect to a horizontal direction; and when the backrest is in the critical position or the flat position, the seat cushion is in a horizontal position parallel to the horizontal direction.

3. The automobile seat according to claim 2, characterized by when the backrest is in the zero-gravity position, the backrest forms an angle of 60° with respect to a vertical direction, and the predetermined angle ranges from 15° to 30°.

4. The automotive seat according to any one of claims 1 to 3, characterized in that a third gear portion is formed at the other end of the driven gear plate away from the second gear portion, and the linkage mechanism further comprises: a first linkage rotatably fixed on the mounting bracket, and a fourth gear portion engaged with the third gear portion is arranged at one end of the first linkage, and the other end of the first linkage is pivotally connected with the seat cushion.

5. The automotive seat according to claim 4, characterized in that the linkage mechanism further comprises: a second linkage spaced apart from the first linkage, and one end of the second linkage is pivotally connected with the mounting bracket, and the other end of the second linkage is pivotally connected with the seat cushion.

6. The automotive seat according to claim 5, characterized by the seat cushion comprises a seat cushion body and a bottom bracket connected with each other, and the first linkage and the second linkage are connected with the bottom bracket respectively.

7. The automobile seat according to any one of claims 1-3, wherein a baffle is further arranged on the mounting bracket, and When the backrest is being converted between the zero-gravity position and the critical position, the driven toothed plate is disengaged from the stop tab; when the backrest is being converted between the critical position and the flat position, the driven toothed plate is abutted against the stop tab.

8. The automotive seat according to claim 7, characterized by A resilient member is further arranged between the driven toothed plate and the mounting bracket, and is configured to apply a pre-resilient force to the driven toothed plate towards the stop tab.

9. An automobile characterized by comprising: The car comprises the car seat according to any one of claims 1-8.

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