Automobile seat zero-gravity posture resetting structure and method, seat and automobile

Abstract

The invention relates to an automobile seat zero-gravity posture resetting structure and method, a seat and an automobile. The automobile seat zero-gravity posture resetting structure comprises a cushion side plate, the cushion side plate is rotationally connected with one end of a connecting rod assembly, the other end of the connecting rod assembly is provided with a pulling mechanism, the pulling mechanism is connected with a connecting pin, and the connecting pin penetrates through the other end of the connecting rod assembly and one end of a lifting support; the other end of the lifting bracket is rotationally connected with the slide rail upper bracket; the pulling mechanism is connected with the control system, the control system can drive the connecting pin to retract into the pulling mechanism after receiving an automobile collision signal so that the connecting rod assembly and the lifting support can be disconnected, and the reset structure is fast in response and good in safety.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive components, and particularly to a zero-gravity attitude collapse structure, method, seat, and vehicle for an automotive seat. Background Art

[0002] The statements herein only provide background art related to the present invention and do not necessarily constitute prior art.

[0003] Traditional seat structures cannot meet the increasing requirements for space, comfort, etc. There are many problems with zero-gravity attitude seats evolved from traditional structures in terms of crash safety. Among them, how to solve the occupant crash safety in the zero-gravity attitude has become a key problem restricting the current development of automotive seats.

[0004] There is currently a rapid reset mechanism for an automotive zero-gravity seat. When a vehicle collision occurs, the force on the seat is transmitted through the side plate, link bracket, and sliding bracket to the collapse bolt. When the force on the collapse bolt is greater than a preset threshold, the collapse bolt breaks in response and triggers the movement of the link bracket and sliding bracket, causing the seat to reset from the zero-gravity lying position to a safe position.

[0005] However, when using the above reset mechanism, relying on the fracture of the collapse bolt for reset, the collapse mechanism has a slow trigger response and an inaccurate trigger timing, affecting safety. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a zero-gravity attitude collapse structure, method, seat, and vehicle for an automotive seat, which has a fast response, an accurate trigger time for the collapse mechanism, and improves safety.

[0007] To achieve the above purpose, the present invention is implemented through the following technical solutions:

[0008] In a first aspect, an embodiment of the present invention provides a zero-gravity attitude reset mechanism for an automotive seat, including a seat cushion side plate, the seat cushion side plate is rotatably connected to one end of a link assembly, a drawing mechanism is provided at the other end of the link assembly, the drawing mechanism is connected to a connection pin, the connection pin passes through the other end of the link assembly and one end of a lifting bracket, and the other end of the lifting bracket is rotatably connected to an upper bracket of a slide rail;

[0009] The drawing mechanism is connected to a control system. After receiving a vehicle collision signal, the control system can drive the connection pin to retract into the drawing mechanism so that the link assembly and the lifting bracket are disconnected.

[0010] Optionally, the pulling and extracting mechanism includes a housing, which is fixedly connected to one end of the connecting rod assembly. A piston is slidably connected inside the housing. One end of the piston is connected to one end of a connecting pin, and the other end of the connecting pin extends outside the housing and passes through the connecting rod assembly and the lifting bracket. The piston divides the space inside the housing into a first chamber and a second chamber. The first connecting pin is located in the first chamber, and the first chamber is connected to a gas generating component;

[0011] The gas generating component can generate or introduce gas into the first chamber, so that the air pressure in the first chamber increases.

[0012] Optionally, the gas generating component adopts an ignition tube arranged in the first chamber. The ignition tube is connected to the power supply system. Correspondingly, gunpowder is arranged in the first chamber, and the power supply system is connected to the control system.

[0013] Or;

[0014] The gas generating component adopts an air pipe. One end of the air pipe is communicated with the first chamber, and the other end of the air pipe is connected with an air pump, and the air pump is connected to the control system.

[0015] Optionally, an elastic member is arranged in the second chamber. One end of the elastic member is connected to the piston, and the other end is connected to the housing. Through the elastic member, the connecting pin is always made to pass through the lifting bracket and the connecting rod assembly in the zero-gravity posture of the seat by the elastic force.

[0016] Optionally, a retaining piece is arranged at the end of the connecting rod assembly connected to the lifting bracket. The retaining piece includes a first retaining piece part and a second retaining piece part. One end of the first retaining piece part is fixedly connected to the end of the connecting rod assembly, and the other end is fixedly connected to the second retaining piece part. The second retaining piece part is parallel to the connecting rod assembly and forms a space for the lifting bracket to insert with the connecting rod assembly. The relative movement of the lifting bracket and the connecting rod assembly along the Y direction of the vehicle is restricted through the second retaining piece part.

[0017] Optionally, a nut is arranged at the end of the connecting rod assembly, and the pulling and extracting mechanism is fixedly connected to the nut by threading;

[0018] Or;

[0019] The pulling and extracting mechanism is provided with a fixing piece, and the pulling and extracting mechanism is fixedly connected to the connecting rod assembly through the fixing piece and the fixing hole arranged on the connecting rod assembly.

[0020] Optionally, a limiting protrusion is arranged at the end of the lifting bracket. Correspondingly, the slide rail bracket is provided with a limiting pin, and the limiting pin can cooperate with the limiting protrusion to limit the rotation of the lifting bracket.

[0021] Second aspect, an embodiment of the present invention provides a working method for a zero-gravity posture reset structure of an automotive seat: when the control system receives a signal that the entire vehicle has a collision, the control system sends a control signal to the extraction mechanism, controlling the extraction mechanism to drive the connecting pin to move, so that the connecting pin retracts into the extraction mechanism, and the connecting pin loses connection with the link assembly and the lifting bracket, and the seat cushion side plate drives the entire seat frame to reset from the zero-gravity reclined position state to the safe position state.

[0022] Third aspect, an embodiment of the present invention provides an automotive seat provided with the zero-gravity posture reset structure of the automotive seat described in the first aspect.

[0023] Fourth aspect, an embodiment of the present invention provides a vehicle provided with the automotive seat described in the third aspect.

[0024] The beneficial effects of the present invention are as follows:

[0025] 1. For the zero-gravity posture reset structure of the automotive seat of the present invention, the extraction mechanism is connected to the connecting pin, the connecting pin passes through the lifting bracket and the link assembly, and the extraction mechanism is connected to the control system and can receive the instructions of the control system to work. When the control system receives a signal that the vehicle has a collision, it can immediately respond to trigger the collapse mechanism, control the extraction mechanism to pull out the connecting pin, release the connection relationship between the link assembly and the lifting bracket, and realize the reset of the seat frame from the zero-gravity reclined position state to the safe position state. Compared with the traditional method that requires waiting for the collapse bolt to break for reset, the response speed is faster, the triggering time of the collapse mechanism is more accurate, the reliability is higher, and the safety is improved.

[0026] 2. For the zero-gravity posture reset structure of the automotive seat of the present invention, the link assembly is provided with a retaining piece, which plays the role of the collapse nut in the traditional reset mechanism. The lifting bracket is located in the space formed between the second retaining piece part and the link assembly, and can effectively limit the relative movement of the link assembly and the lifting bracket along the vehicle Y direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The specification drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0028] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0029] Figure 2 It is a schematic diagram of the link assembly structure of Embodiment 1 of the present invention Figure 1 ;

[0030] Figure 3 It is a schematic diagram of the link assembly structure of Embodiment 1 of the present invention Figure 2 ;

[0031] Figure 4 It is a schematic diagram when the connecting pin of Embodiment 1 of the present invention extends out of the drawing and pulling mechanism;

[0032] Figure 5 It is a schematic diagram when the connecting pin of Embodiment 1 of the present invention retracts into the drawing and pulling mechanism;

[0033] Figure 6 It is a schematic diagram of the piston and the connecting pin inside the housing in Embodiment 1 of the present invention;

[0034] Figure 7 It is a schematic diagram of the working state of Embodiment 2 of the present invention;

[0035] Among them, 1. Cushion side plate, 2. Rivet, 3. Link assembly, 4. Drawing and pulling mechanism, 5. Lifting bracket, 6. Step bolt, 7. Upper bracket of the slide rail, 8. Zero-gravity lying position state, 9. Safe position state;

[0036] 31. Link, 32. Nut, 33. Retaining plate;

[0037] 41. Housing, 42. Connecting pin, 43. Piston, 44. Spring;

[0038] 71. Mounting hole;

[0039] 33-1. First retaining plate part, 33-2. Second retaining plate part. Detailed implementation mode

[0040] Embodiment 1

[0041] This embodiment provides a zero-gravity attitude reset structure for an automotive seat, as Figure 1 shown, including a cushion side plate 1, the cushion side plate 1 is a part of the seat frame, one end of the cushion side plate 1 is rotatably connected to one end of the link assembly 3, the other end of the link assembly 3 is connected to the drawing and pulling mechanism 4 at one end of the lifting bracket 5. Specifically, the other end of the link assembly 3 is provided with the drawing and pulling mechanism 4, the drawing and pulling mechanism 4 is connected to the connecting pin 42. In the zero-gravity attitude of the seat, the connecting pin 42 extends out of the drawing and pulling mechanism 4. When a collision occurs, the drawing and pulling mechanism 4 can drive the connecting pin 42 to retract into the interior of the drawing and pulling mechanism 4. The connecting pin 42 passes through the link assembly 3 and the lifting bracket 5, and the link assembly 3 and the lifting bracket 5 are connected by the connecting pin 42, and the link assembly 3 and the lifting bracket 5 can rotate relative to the connecting pin 42. One end of the lifting bracket 5 is connected to the connecting pin 42, and the other end is connected to the upper bracket 7 of the slide rail, and the upper bracket 7 of the slide rail is connected to the slide rail.

[0042] In this embodiment, a rotational connection is formed between the seat cushion side plate 1 and the connecting rod assembly 3. The connecting rod assembly 3 and the lifting bracket 5 are rotationally connected to the connecting pin 42, and the lifting bracket 5 is rotationally connected to the upper slide rail bracket 7, forming three hinge points. In the zero-gravity posture, the seat cushion side plate 1, the connecting rod assembly 3, the lifting bracket 5, and the upper slide rail bracket 7 are kept stable by an external force, and the way to keep stable can adopt the existing technology and will not be described in detail here.

[0043] The seat cushion side plate 1 can adopt the seat cushion side plate structure of the existing seat frame, and its specific structure will not be described in detail here.

[0044] One end of the seat cushion side plate 1 is rotationally connected to the connecting rod assembly 3 through a rivet 2, forming a hinge point.

[0045] As Figures 2 - 3 shown, the connecting rod assembly 3 includes a connecting rod 31, a retaining piece 33, and a nut 32.

[0046] The rod portion of the rivet 2 is fixedly connected to the seat cushion side plate 1. The rod portion of the rivet 2 passes through the connecting rod 31 through a through hole provided at one end of the connecting rod 31, and the connecting rod 31 is rotationally connected to the rod portion of the rivet 2, thereby realizing the rotational connection between the connecting rod 31 and the seat cushion side plate 1.

[0047] As Figures 4 - 6 shown, the extraction mechanism 4 includes a housing 41. In this embodiment, the housing 41 adopts a cylindrical housing. A nut 32 is welded and fixed to the end of the connecting rod 31. Preferably, the nut 32 adopts a stepped nut, and the housing 41 is threadedly fixed to the stepped nut, thereby realizing the fixed connection between the extraction mechanism 4 and the connecting rod 31.

[0048] In another embodiment, the connecting rod 31 is provided with a first fixing hole, preferably two first fixing holes. The outer side surface of the housing 41 is provided with a fixing plate, and the fixing plate is provided with a second fixing hole matching the first fixing hole. The housing 41 is fixedly connected to the connecting rod 31 through the first fixing hole, the second fixing hole, and fixing bolts and nuts.

[0049] Those skilled in the art can select the fixing method of the housing on the connecting rod according to actual needs and will not be described in detail here. The above two methods are both convenient for the fixed connection between the extraction mechanism 4 and the connecting rod 31, and the installation is convenient and fast.

[0050] A piston 43 is slidably connected inside the housing 41. The piston 43 can move along the axis direction of the housing inside the housing 41. The piston 43 divides the space inside the housing 41 into a first chamber and a second chamber. One end of the piston 43 is fixedly connected to a connecting pin 42. The connecting pin 42 is located in the first chamber. After passing through the housing 41, the connecting pin 42 passes through the through holes provided in the connecting rod 31 and the lifting bracket 5 in sequence and passes through the connecting rod 31 and the lifting bracket 5.

[0051] The piston can move along the axis direction of the housing 41 inside the housing 41, so that the connecting pin 42 can retract into the internal space of the housing 41.

[0052] The first chamber is connected with a gas generating component. The gas generating component can generate gas in the first chamber, so as to drive the piston to move by the action of air pressure, and drive the connecting pin to retract into the housing by the piston.

[0053] In this embodiment, the gas generating component can adopt the principle of an existing gas generator, including an ignition tube fixed inside the first chamber. The ignition tube is connected to the power supply system. Gunpowder is also provided in the first chamber. The gunpowder includes ignition powder and gas generating powder. After the ignition tube is powered on, the ignition powder can be burned, and then the gas generating powder generates gas, increasing the air pressure inside the first chamber, driving the piston to move, and making the connecting pin retract into the housing.

[0054] The power supply system can adopt an automotive power supply or an additional power supply. The control system is connected to the power supply system and can control the operation of the ignition tube.

[0055] Preferably, the power supply system includes a generator circuit and a controller. The ignition tube is connected to the generator circuit. The generator circuit is connected to the controller and is powered by the controller. When working normally, the current value of the generator circuit is 40 ma (diagnostic current, to judge whether the ignition device is normal). When a collision occurs, the controller makes a logical judgment according to the collision intensity. If the ignition threshold is reached, at this time, the controller issues an ignition signal, generates a larger current, and triggers the ignition tube to work. The above technology can adopt the existing technology, and its further technical details will not be described in detail here.

[0056] The ignition tube and its connection method with the power supply system, the ignition powder, and the gas generating powder can adopt the existing technology, and will not be further described in detail here.

[0057] Further, in order to enable the connecting pin 42 to remain passing through the connecting rod and the lifting bracket in the zero-gravity posture of the seat, an elastic member is further provided in the second chamber. Preferably, the elastic member is a spring 44. One end of the spring 44 is connected to the housing 41, and the other end is connected to the piston 43. When the air pressure in the first chamber does not reach the set value, the connecting pin can remain passing through the connecting rod and the lifting bracket under the elastic force of the spring 44.

[0058] In this embodiment, compared with the traditional solution using a collapsible bolt and a collapsible nut, the connecting pin 42 is used instead of the collapsible bolt, so there is no need to set a collapsible nut. If only the connecting pin passes through between the connecting rod 31 and the lifting bracket 5, the relative movement between the connecting rod 31 and the lifting bracket 5 along the Y direction of the vehicle, that is, the axis direction of the extraction mechanism, cannot be restricted. Therefore, in this embodiment, a retaining piece 33 is provided at the end of the connecting rod 31 to act as the function of the collapsible nut.

[0059] Specifically:

[0060] The retaining piece 33 includes a first retaining piece portion 33-1 and a second retaining piece portion 33-2. The first retaining piece portion 33-1 is fixedly welded to the end of the connecting rod 31. The second retaining piece portion 33-2 is arranged on one side of the connecting rod 31. The extraction mechanism 4 and the second retaining piece portion are respectively arranged on both sides of the connecting rod. The second retaining piece portion 33-2 is arranged parallel to the connecting rod 31. The second retaining piece portion 33-2 is provided with an opening for the connecting pin 42 to pass through. A certain space is formed between the second retaining piece portion 33-2 and the connecting rod 31. The lifting bracket 5 extends into the space. The connecting pin 42 passes through the connecting rod 31, the lifting bracket 5 and the second retaining piece portion 33-2 in sequence.

[0061] In this embodiment, the thickness of the lifting bracket 5 is increased from the traditional 2 mm to 5 mm, which improves the structural strength of the entire lifting bracket 5. At the same time, both sides of the lifting bracket 5 are in contact with the outer side surfaces of the second retaining piece portion and the connecting rod respectively. The second retaining piece portion plays a limiting role on the lifting bracket 5 and the connecting rod 31 along the Y direction of the vehicle, preventing relative movement along the Y direction of the vehicle between the lifting bracket 5 and the connecting rod 31.

[0062] Further, the width of the end of the connecting rod 31 where the extraction mechanism 4 is provided is greater than the width of the remaining part, and widening treatment is performed, effectively improving the structural strength of the connecting rod 31.

[0063] The bottom end of the lifting bracket 5 is rotatably connected to the upper bracket 7 of the slide rail. Specifically, a stepped bolt 6 is fixed to the upper bracket 7 of the slide rail. The stepped bolt 6 passes through the lifting bracket 5 through the opening on the lifting bracket 5. The lifting bracket 5 is rotatably connected to the stepped bolt 6. A nut is threadedly connected to the stepped bolt 6 to prevent the lifting bracket 5 from disengaging from the stepped bolt 6.

[0064] Further, in order to limit the rotation angle of the lifting bracket 5 relative to the upper bracket 7 of the slide rail, two limiting protrusions are provided at the end of the lifting bracket 5 for connecting with the upper bracket of the slide rail. A limiting pin is installed on the upper bracket 7 of the slide rail through the mounting hole 71. The two limiting protrusions are respectively located on both sides of the limiting pin, and the limiting pin can contact the limiting protrusions, thereby limiting the rotation of the lifting bracket 5 relative to the upper bracket 7 of the slide rail.

[0065] The upper bracket 7 of the slide rail and its connection method with the slide rail can adopt the prior art and will not be described in detail here.

[0066] Embodiment 2

[0067] This embodiment provides a working method of the zero-gravity attitude reset mechanism of the vehicle seat described in Embodiment 1. As Figure 7 shown, when a vehicle collision occurs, the vehicle collision perception system detects the vehicle collision and triggers the collapse mechanism. The control system controls the power supply system to work, and the power supply system controls the ignition tube to work. The ignition tube detonates the gunpowder in the first chamber, the air pressure in the first chamber increases, the piston 43 moves against the elastic force of the spring 44, so that the connecting pin retracts into the interior of the housing 41. The connecting pin 42 physically connects the lifting bracket 5 and the connecting rod 31. During the collision, the seat user moves forward due to inertia. The seat cushion side plate of the seat frame generates a downward pressure due to the forward movement of the person's inertia, so that the seat frame can be quickly reset from the zero-gravity lying position state 8 to the safe position state 9, thereby ensuring the safety of the occupant.

[0068] For the zero-gravity attitude reset mechanism and working method of the vehicle seat in this embodiment, after the control system receives the signal of the vehicle collision, it can immediately respond to trigger the collapse mechanism, control the power supply system to work, detonate the gunpowder in the first chamber, release the connection relationship between the connecting rod assembly 3 and the lifting bracket 5, and realize the reset of the seat frame from the zero-gravity lying position state to the safe position state. Using the contraction of the connecting pin 42 instead of the fracture of the collapse bolt to trigger the reset movement, compared with the traditional method that needs to wait for the collapse bolt to fracture for reset, the response speed is faster, the triggering time of the collapse mechanism is more accurate, the reliability is higher, and the safety is improved. At the same time, when improving, only the housing of the extraction mechanism needs to be fixed on the connecting rod, and no improvement is required for the rest of the structure. Only the extraction mechanism is used to replace the collapse bolt, and the retaining piece is used to replace the collapse nut. The structure design is simple, the improvement difficulty is small, and the housing is threadedly connected with the connecting rod or connected through the fixing piece and bolts and nuts, which is convenient for installation.

[0069] Embodiment 3

[0070] This embodiment provides a zero-gravity attitude reset structure for a vehicle seat. Compared with Embodiment 1, no ignition tube is provided in the first chamber, and there is no need to provide a power supply line between the ignition tube and the power supply system. The first chamber is provided with a gas interface, and the gas interface can adopt an existing structure, which will not be described in detail here. The gas interface is connected to one end of a trachea, and the other end of the trachea is connected to an air pump. The air pump can be installed at a set position on the vehicle body according to actual needs, and the installation position of the air pump can be set according to actual needs, which will not be described in detail here. The air pump is connected to a control system, and the control system can control the air pump to work.

[0071] The air pump can introduce gas into the first chamber, increasing the air pressure in the first chamber, thereby driving the connecting pin to retract into the interior of the housing 41 by means of the piston 43.

[0072] The remaining structure of this embodiment is the same as that of Embodiment 1 and will not be repeated here. Driving the piston 43 to move by introducing gas into the housing 41 through the air pump is safer compared with the method of detonating gunpowder in Embodiment 1.

[0073] Embodiment 4

[0074] This embodiment provides a working method for the zero-gravity attitude reset structure of the vehicle seat described in Embodiment 3:

[0075] When a vehicle collision occurs, the vehicle collision perception system detects the vehicle collision and triggers the collapse mechanism. The control system controls the air pump to work. The air pump introduces gas into the first chamber, increasing the air pressure in the first chamber. The piston 43 moves against the elastic force of the spring 44, causing the connecting pin to retract into the interior of the housing 41, lifting the connection of the physical connecting pin between the lifting bracket 5 and the connecting rod 31. During a collision, due to inertia, the seat user moves forward. The seat cushion side plate 1 of the seat frame generates a downward pressure due to the forward movement of the person's inertia, enabling the seat frame to quickly reset from the zero-gravity lying position state 8 to the safe position state 9, thereby ensuring the safety of the occupant.

[0076] Embodiment 5

[0077] This embodiment provides a vehicle seat provided with the zero-gravity reset structure of the vehicle seat described in Embodiment 1 or Embodiment 3. The remaining structure of the vehicle seat can adopt existing technologies and will not be described in detail here.

[0078] Embodiment 6

[0079] This embodiment provides a vehicle provided with the vehicle seat described in Embodiment 5. The remaining structure of the vehicle can adopt existing technologies and will not be described in detail here.

[0080] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A zero-gravity posture resetting structure for a car seat, characterized in that: It includes a seat cushion side plate, which is rotatably connected to one end of a connecting rod assembly, and the other end of the connecting rod assembly is provided with a pull-out mechanism, the pull-out mechanism and a connecting pin, the connecting pin passes through the other end of the connecting rod assembly and one end of a lifting bracket, and the other end of the lifting bracket is rotatably connected to the bracket on the slide rail; The extraction mechanism is connected to the control system. After receiving the car collision signal, the control system can drive the connecting pin to retract into the extraction mechanism so that the connecting rod assembly and the lifting bracket are disconnected.

2. The zero-gravity posture resetting structure for a car seat as claimed in claim 1, characterized in that: The extraction mechanism includes a shell, which is fixedly connected to one end of the connecting rod assembly. A piston is slidably connected inside the shell, and the piston is connected to one end of a connecting pin. The other end of the connecting pin extends to the outside of the shell and passes through the connecting rod assembly and the lifting bracket. The piston divides the space inside the shell into a first chamber and a second chamber. The connecting pin is located in the first chamber, and the first chamber is connected to a gas generating component.

3. The zero-gravity posture resetting structure for a car seat as claimed in claim 2, characterized in that: The gas generating component adopts an ignition tube arranged in the first chamber, the ignition tube is connected to the power supply system, and accordingly, gunpowder is arranged in the first chamber, and the power supply system is connected to the control system; or; The gas generating component adopts an air pipe, one end of which is communicated with the first chamber, and the other end of which is connected with an air pump, and the air pump is connected with a control system.

4. The zero-gravity posture resetting structure for a vehicle seat as claimed in claim 2, characterized in that: An elastic member is disposed in the second chamber, one end of the elastic member is connected to the piston, and the other end of the elastic member is connected to the housing.

5. The zero-gravity posture resetting structure for a car seat as claimed in claim 1, characterized in that: A baffle is provided at the end of the connecting rod assembly connected to the lifting bracket, and the baffle includes a first baffle portion and a second baffle portion. One end of the first baffle portion is fixed to the end of the connecting rod assembly, and the other end is fixed to the second baffle portion. The second baffle portion is parallel to the connecting rod assembly and forms a space with the connecting rod assembly for inserting the lifting bracket.

6. The zero-gravity posture resetting structure for a car seat as claimed in claim 1, characterized in that: A nut is provided at the end of the connecting rod assembly, and the extraction mechanism is fixedly connected to the nut thread; or; The extraction mechanism is provided with a fixing plate, and the extraction mechanism is fixedly connected to the connecting rod assembly through the fixing plate and a fixing hole provided in the connecting rod assembly.

7. The zero-gravity posture resetting structure for a car seat as claimed in claim 1, characterized in that: The end of the lifting bracket is provided with a limiting protrusion, and correspondingly, the slide rail bracket is provided with a limiting pin, which can cooperate with the limiting protrusion to limit the rotation of the lifting bracket toward the seat cushion side plate.

8. A working method of the zero-gravity posture resetting structure for a vehicle seat according to any one of claims 1 to 7, characterized in that: When the control system receives information that the vehicle has collided, the control system sends a control signal to the pulling mechanism, controlling the pulling mechanism to drive the connecting pin to move, causing the connecting pin to retract into the pulling mechanism, causing the connecting pin to lose connection with the connecting rod assembly and the lifting bracket, and the seat cushion side panel drives the entire seat frame to reset from the zero-gravity lying position to a safe position.

9. A car seat, characterized in that: A zero-gravity posture restoring structure for an automobile seat as claimed in any one of claims 1 to 7 is provided.

10. An automobile, characterized in that: A vehicle seat according to claim 9 is provided.

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