A zero-gravity seat frame with an energy-absorbing and resetting mechanism and a vehicle

Abstract

This invention provides a zero-gravity seat frame and vehicle with an energy-absorbing and resetting mechanism, belonging to the field of vehicle technology. It solves the problems of energy-absorbing mechanisms lacking precision in energy absorption control and having short lifespans, sometimes requiring replacement of the friction plates after only one use. Specifically, an angle-adjusting motor drives a rotating shaft via an angle adjuster. The rotating shaft passes through a resetting connecting plate. When the hook-lock assembly is locked, the relative position of the rotating shaft and the resetting connecting plate is fixed. When the hook-lock is unlocked, the resetting connecting plate can rotate relative to the rotating shaft. One end of the front connecting bracket is rotatably connected to the resetting connecting plate, and the other end is rotatably connected to one end of the seat base frame structure. The resetting connecting plate is located between two energy-absorbing friction plates. A drive assembly is used to drive the two energy-absorbing friction plates closer together to clamp the resetting connecting plate, or to drive the two energy-absorbing friction plates further apart to separate them from the resetting connecting plate. This design offers better control precision and greater reusability.

Description

Technical Field

[0001] This invention belongs to the field of vehicle technology, and in particular relates to a zero-gravity seat frame with an energy-absorbing and resetting mechanism and a vehicle. Background Technology

[0002] When using a zero-gravity seat, passengers can adjust the seat back to rotate backward and the seat cushion support near the passenger's feet to rotate upward, allowing them to sit in a reclining position for greater comfort. However, due to the large angle between the backrest and seat cushion, the seat belt adjustment range is limited in this reclining position. In an emergency, the seat belt's restraint may not be sufficient to fully protect the passenger, posing a safety hazard. To improve passenger safety, in the event of a collision, if the seat is in a zero-gravity position, the seat controller should activate a rapid energy-absorbing and returning mechanism to the standard position, activating the seat cushion airbag and tightening the seat belt. However, in the prior art, patent application CN117429327B discloses a zero-gravity seat with a rapid return mechanism and its rapid return method, which uses a friction disc for energy absorption. This method lacks precision in energy absorption and has a short lifespan, requiring replacement even after a single use. Summary of the Invention

[0003] In view of this, in order to solve the problems of the existing technology that generally uses friction discs for energy absorption, which cannot control the accuracy of energy absorption and has a short lifespan, and the friction discs can only be used once and then need to be replaced, this invention proposes a zero-gravity seat frame and vehicle with an energy absorption and reset mechanism.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A zero-gravity seat frame with an energy-absorbing and resetting mechanism includes: a bottom support structure, a seat base frame structure, an angle adjustment motor, an angle adjustment assembly, and an energy-absorbing and resetting mechanism. The angle adjustment assembly includes an angle adjuster, a resetting connecting plate, a rotating shaft, a front connecting bracket, and a hook-lock assembly. The angle adjustment motor is fixedly mounted on the bottom support structure. The angle adjustment motor drives the rotating shaft to rotate via the angle adjuster. The rotating shaft is connected to the hook-lock assembly and passes through the resetting connecting plate. The hook-lock assembly has a locked state and an unlocked state. When the hook-lock assembly is in the locked state, the relative position of the rotating shaft and the resetting connecting plate is fixed. When the lock assembly is in the unlocked state, the reset connecting plate can rotate relative to the rotation axis. One end of the front connecting bracket is rotatably connected to the reset connecting plate, and the other end is rotatably connected to one end of the seat bottom frame structure. The other end of the seat bottom frame structure is rotatably set on the bottom support structure. The energy-absorbing reset mechanism includes two energy-absorbing friction plates and a drive assembly. The reset connecting plate is located between the two energy-absorbing friction plates. The drive assembly is used to drive the two energy-absorbing friction plates to move closer to each other so that the two energy-absorbing friction plates clamp the reset connecting plate, or to drive the two energy-absorbing friction plates to move away from each other so that the two energy-absorbing friction plates separate from the reset connecting plate.

[0006] As a preferred embodiment of the zero-gravity seat frame with the energy-absorbing and resetting mechanism described above, both of the energy-absorbing friction plates are provided with anti-slip patterns on the side near the resetting connecting plate.

[0007] As a preferred embodiment of the zero-gravity seat frame with the energy-absorbing and resetting mechanism, the drive assembly includes a motor bracket, a drive motor, and a lead screw. The drive motor is fixedly mounted on the motor bracket, which is fixedly mounted on the bottom support structure. The lead screw is fixedly connected to the output end of the drive motor. The lead screw has a first external thread and a second external thread with opposite thread directions. One energy-absorbing friction plate is screwed to the first external thread, and the other energy-absorbing friction plate is screwed to the second external thread.

[0008] As a preferred embodiment of the zero-gravity seat frame with the energy-absorbing and resetting mechanism, the energy-absorbing and resetting structure further includes a friction plate bracket and a guide shaft. The guide shaft slides through the two energy-absorbing friction plates and is fixedly mounted on the friction plate bracket.

[0009] As a preferred embodiment of the aforementioned zero-gravity seat frame with an energy-absorbing and resetting mechanism, the hook-lock assembly includes an ignition device, a brake line, a cam, a hook lock, and a toothed plate. The toothed plate is fixedly connected to a rotating shaft, and the hook lock is rotatably connected to a resetting connecting plate. One end of the cam is rotatably mounted on the resetting connecting plate and has a first position and a second position. The ignition device is connected to the other end of the cam via the brake line. When the cam is in the first position, the first abutting part of the cam abuts against the hook lock, causing the hook lock to engage with the toothed plate. When the cam is in the second position, the second abutting part of the cam abuts against the hook lock, causing the hook lock to separate from the toothed plate.

[0010] As a preferred embodiment of the zero-gravity seat frame with the energy-absorbing and resetting mechanism described above, the hook-lock assembly further includes a torsion spring disposed between the cam and the resetting connecting plate.

[0011] As a preferred embodiment of the zero-gravity seat frame with the energy absorption and reset mechanism, the hook and lock assembly further includes a cover, which is connected to the reset connecting plate by bolts. A cam is located inside the cover, and a sliding column is fixedly provided on the cam. The cover is provided with a guide groove, and the sliding column slides through the guide groove.

[0012] As a preferred embodiment of the zero-gravity seat frame with the energy absorption and reset mechanism, the zero-gravity seat frame with the energy absorption and reset mechanism further includes a synchronizing rod. There are two angle adjustment components. The two ends of the synchronizing rod are respectively fixedly connected to the angle adjusters in the two angle adjustment components. The two angle adjustment components are located on both sides of the seat bottom frame structure. There are also two energy absorption and reset mechanisms. The two energy absorption and reset mechanisms are respectively connected to the reset connecting plates in the two angle adjustment components.

[0013] The present invention also provides a vehicle including the aforementioned zero-gravity seat frame with an energy-absorbing and resetting mechanism.

[0014] As a preferred embodiment of the aforementioned vehicle, the vehicle further includes a seat back support and a backrest angle adjustment structure. The seat back support is rotatably connected to the seat base frame structure, and the backrest angle adjustment structure is used to adjust the angle between the seat back support and the seat base frame structure.

[0015] Compared with the prior art, the advantages of the zero-gravity seat frame with energy absorption and reset mechanism and the vehicle provided by the present invention are as follows:

[0016] This invention provides a zero-gravity seat frame with an energy-absorbing and resetting mechanism, and a vehicle thereof. In this zero-gravity seat frame, the seat base frame structure supports the seat cushion. When the seat needs to be adjusted from a normal sitting position to a zero-gravity reclining position, the angle adjustment motor drives the rotating shaft to rotate via the angle adjuster. At this time, the hook-lock assembly is in a locked state, and the relative position of the rotating shaft and the reset connecting plate is locked. The rotating shaft drives the reset connecting plate to rotate, the reset connecting plate drives the front connecting bracket to rotate, and the front connecting bracket drives the seat base frame structure to rotate, thereby enabling the end of the seat cushion closest to the occupant's feet to rotate upward. When the vehicle is involved in a collision, and the seat needs to return from the zero-gravity reclining position to a normal sitting position, that is, when the end of the seat cushion closest to the occupant's feet needs to rotate downward. At this time, the hook and lock assembly is in the unlocked state, and the reset connecting plate can rotate relative to the rotation axis. Under the action of the passenger's weight and the forward momentum of the vehicle, the end of the seat bottom frame structure near the passenger's feet rotates downward. The front connecting bracket drives the reset connecting plate to rotate relative to the rotation axis. At this time, the drive assembly of the energy-absorbing reset mechanism drives the two energy-absorbing friction plates to approach each other and clamp the reset connecting plate. Energy is absorbed through the friction between the energy-absorbing friction plates and the reset connecting plate. While the seat returns to its original position, it absorbs part of the collision energy and reduces the impact of the impact inertia on the passenger.

[0017] This zero-gravity seat frame with an energy absorption and reset mechanism employs this mechanism for energy absorption, resulting in better control precision and enabling active adaptive energy absorption. For example, the energy absorption intensity is low in the early stages of operation and high in the later stages. Furthermore, it is highly reusable, has a long service life, and can be used multiple times. After the energy absorption and reset mechanism is triggered, it can be reset for future use without the need to replace energy-absorbing parts. Attached Figure Description

[0018] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0019] Figure 1 This is a schematic diagram of the energy-absorbing and resetting mechanism and hook-lock assembly of the zero-gravity seat frame with energy-absorbing and resetting mechanism provided in a specific embodiment of the present invention, viewed from a first perspective.

[0020] Figure 2 This is a schematic diagram of the structure of the energy-absorbing and resetting mechanism of the zero-gravity seat frame with energy-absorbing and resetting mechanism provided in a specific embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the energy-absorbing and resetting mechanism and hook-lock assembly of the zero-gravity seat frame with energy-absorbing and resetting mechanism provided in a specific embodiment of the present invention from a second perspective.

[0022] Figure 4This is an exploded view of the hook-lock assembly of the zero-gravity seat frame with an energy-absorbing and resetting mechanism provided in a specific embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the zero-gravity seat frame with an energy-absorbing and resetting mechanism provided in a specific embodiment of the present invention;

[0024] Figure 6 This is an assembly diagram of a zero-gravity seat frame with an energy-absorbing and resetting mechanism and a seat back support provided in a specific embodiment of the present invention.

[0025] In the picture:

[0026] 1. Bottom support structure;

[0027] 2. Seat base frame structure;

[0028] 3. Angle-adjusting motor;

[0029] 4. Angle adjustment assembly; 41. Angle adjuster; 42. Reset connecting plate; 43. Rotating shaft; 44. Front connecting bracket; 45. Hook lock assembly; 451. Detonator; 452. Brake cable; 453. Cam; 454. Hook lock; 455. Tooth plate; 456. Torsion spring; 457. Cover; 4531. Sliding column; 4571. Guide groove;

[0030] 5. Energy absorption and reset mechanism; 51. Motor bracket; 52. Drive motor; 53. Lead screw; 54. Energy absorption friction plate; 55. Friction plate bracket; 56. Guide shaft;

[0031] 6. Synchronizing rod;

[0032] 7. Seat back support. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.

[0034] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0037] See Figure 1-6 This invention provides a zero-gravity seat frame with an energy-absorbing and resetting mechanism. The zero-gravity seat frame includes: a bottom support structure 1, a seat base frame structure 2, an angle adjustment motor 3, an angle adjustment assembly 4, and an energy-absorbing and resetting mechanism 5. The angle adjustment assembly 4 includes an angle adjuster 41, a resetting connecting plate 42, a rotating shaft 43, a front connecting bracket 44, and a hook-lock assembly 45. The angle adjustment motor 3 is fixedly mounted on the bottom support structure 1. The angle adjustment motor 3 drives the rotating shaft 43 to rotate via the angle adjuster 41. The rotating shaft 43 is connected to the hook-lock assembly 45 and passes through the resetting connecting plate 42. The hook-lock assembly 45 has a locked state and an unlocked state. When the hook-lock assembly 45 is in the locked state, the rotating shaft... The relative position of 43 and reset connecting plate 42 is fixed; when the hook lock 454 is in the unlocked state, the reset connecting plate 42 can rotate relative to the rotating shaft 43, one end of the front connecting bracket 44 is rotatably connected to the reset connecting plate 42, and the other end is rotatably connected to one end of the seat bottom frame structure 2, and the other end of the seat bottom frame structure 2 is rotatably set on the bottom support structure 1; the energy-absorbing reset mechanism 5 includes two energy-absorbing friction plates 54 and a drive assembly, the reset connecting plate 42 is located between the two energy-absorbing friction plates 54, and the drive assembly is used to drive the two energy-absorbing friction plates 54 to move closer to each other so that the two energy-absorbing friction plates 54 clamp the reset connecting plate 42, or drive the two energy-absorbing friction plates 54 to move away from each other so that the two energy-absorbing friction plates 54 are separated from the reset connecting plate 42.

[0038] In this zero-gravity seat frame with an energy-absorbing and resetting mechanism, the seat base frame structure 2 supports the seat cushion. When the seat needs to be adjusted from a normal sitting position to a zero-gravity reclining position, the angle adjustment motor 3 drives the rotating shaft 43 to rotate via the angle adjuster 41. At this time, the hook-lock assembly 45 is locked, and the relative position of the rotating shaft 43 and the reset connecting plate 42 is locked. The rotating shaft 43 drives the reset connecting plate 42 to rotate, which in turn drives the front connecting bracket 44 to rotate. The front connecting bracket 44 then drives the seat base frame structure 2 to rotate, thereby causing the end of the seat cushion closest to the occupant's feet to rotate upward. When the vehicle is involved in a collision and the seat needs to return from the zero-gravity reclining position to a normal sitting position, that is, when the end of the seat cushion closest to the occupant's feet needs to rotate downward. At this time, the hook-lock assembly 45 is in the unlocked state, and the reset connecting plate 42 can rotate relative to the rotating shaft 43. Under the action of the passenger's weight and the forward momentum of the vehicle, the end of the seat bottom frame structure 2 near the passenger's feet rotates downward. The front connecting bracket 44 drives the reset connecting plate 42 to rotate relative to the rotating shaft 43. At this time, the drive assembly of the energy-absorbing reset mechanism 5 drives the two energy-absorbing friction plates 54 to approach each other and clamp the reset connecting plate 42. Energy is absorbed through the friction between the energy-absorbing friction plates 54 and the reset connecting plate 42. While the seat returns to its original position, it absorbs part of the collision energy and reduces the impact of the impact inertia on the passenger.

[0039] This zero-gravity seat frame with an energy absorption and reset mechanism uses the energy absorption and reset mechanism 5 for energy absorption, resulting in better control precision and enabling active adaptive energy absorption. For example, the energy absorption intensity is low in the early stage of operation and high in the later stage. Furthermore, it is highly reusable, has a long service life, and can be used multiple times. After the energy absorption and reset mechanism 5 is triggered, it can be reset for the next use without the need to replace the energy absorption parts.

[0040] Optionally, both energy-absorbing friction plates 54 are provided with anti-slip patterns on the side near the reset connecting plate 42. This increases the friction between the energy-absorbing friction plates 54 and the reset connecting plate 42.

[0041] Optionally, the drive assembly includes a motor bracket 51, a drive motor 52, and a lead screw 53. The drive motor 52 is fixedly mounted on the motor bracket 51, and the motor bracket 51 is fixedly mounted on the bottom support structure 1. The lead screw 53 is fixedly connected to the output end of the drive motor 52. The lead screw 53 has a first external thread and a second external thread with opposite thread directions. One energy-absorbing friction plate 54 is screwed to the first external thread, and the other energy-absorbing friction plate 54 is screwed to the second external thread. The drive motor 52 drives the lead screw 53 to rotate, and the lead screw 53 can drive the two energy-absorbing friction plates 54 to move away from or towards each other.

[0042] Optionally, the energy-absorbing and resetting structure further includes a friction plate bracket 55 and a guide shaft 56. The guide shaft 56 is slidably disposed through the two energy-absorbing friction plates 54 and is fixedly disposed on the friction plate bracket 55. The guide shaft 56 can guide the movement of the two energy-absorbing friction plates 54.

[0043] Optionally, the hook lock assembly 45 includes a detonator 451, a brake line 452, a cam 453, a hook lock 454, and a toothed plate 455. The toothed plate 455 is fixedly connected to the rotating shaft 43, and the hook lock 454 is rotatably connected to the reset connecting plate 42. One end of the cam 453 is rotatably disposed on the reset connecting plate 42 and has a first position and a second position. The detonator 451 is connected to the other end of the cam 453 through the brake line 452. When the cam 453 is in the first position, the cam 453 abuts against the first abutting part of the hook lock 454, causing the hook lock 454 to engage with the toothed plate 455. When the cam 453 is in the second position, the cam 453 abuts against the second abutting part of the hook lock 454, causing the hook lock 454 to separate from the toothed plate 455.

[0044] When unlocking is required, the detonator 451 drives the cam 453 to rotate via the brake line 452. The cam 453 abuts against the second abutting part of the hook lock 454 and drives the hook lock 454 to rotate, so that the hook lock 454 separates from the toothed plate 455, thereby unlocking the rotating shaft 43 from the reset connecting plate 42.

[0045] Optionally, the hook-lock assembly 45 further includes a torsion spring 456 disposed between the cam 453 and the reset connecting plate 42. The torsion spring 456 is used to reset the cam 453.

[0046] Optionally, the hook-lock assembly 45 further includes a cover 457, which is bolted to the reset connecting plate 42. A cam 453 is located inside the cover 457, and a sliding post 4531 is fixedly mounted on the cam 453. The cover 457 is provided with a guide groove 4571, and the sliding post 4531 slides through the guide groove 4571. The sliding post 4531 slides within the guide groove 4571, guiding and limiting the rotation of the cam 453.

[0047] Optionally, the zero-gravity seat frame with energy-absorbing and resetting mechanisms further includes a synchronizing rod 6. There are two angle adjustment components 4, with each end of the synchronizing rod 6 fixedly connected to an angle adjuster 41 in one of the two angle adjustment components 4. The two angle adjustment components 4 are located on opposite sides of the seat base frame structure 2. There are also two energy-absorbing and resetting mechanisms 5, each corresponding to a reset connecting plate 42 in one of the two angle adjustment components 4. The synchronizing rod 6 enables both angle adjusters 41 in the two angle adjustment components 4 located on opposite sides of the seat base frame structure 2 to be driven by the angle adjustment motor 3.

[0048] The present invention also provides a vehicle including the aforementioned zero-gravity seat frame with an energy-absorbing and resetting mechanism.

[0049] Optionally, the vehicle further includes a seat back support 7 and a backrest angle adjustment structure. The seat back support 7 is rotatably connected to the seat bottom frame structure 2, and the backrest angle adjustment structure is used to adjust the angle between the seat back support 7 and the seat bottom frame structure 2.

[0050] When a vehicle collision occurs, the seat controller confirms the current seat posture. When the seat controller detects that the seat is in a standard posture, the zero-gravity seat frame with energy-absorbing and resetting mechanism does not activate, ensuring the torsional strength of the zero-gravity seat frame with energy-absorbing and resetting mechanism. When the seat controller detects that the seat is in a zero-gravity posture, the hook-lock assembly 45 of the zero-gravity seat frame with energy-absorbing and resetting mechanism unlocks, and the energy-absorbing and resetting mechanism 5 activates, absorbing energy and quickly returning to the standard posture, and igniting the seat cushion airbag and the seat belt to deploy and tighten.

[0051] When the hook lock assembly 45 is unlocked and the energy-absorbing reset mechanism 5 is activated, the detonator 451 is detonated. The detonator 451 pulls the cam 453 to rotate via the brake cable 452. After the cam 453 rotates, it strikes the second abutment part of the hook lock 454, causing the hook lock 454 to rotate and separate from the toothed plate 455, thus unlocking. After unlocking, the reset connecting plate 42 rotates around the rotating shaft 43. At this time, the drive motor 52 drives the lead screw 53 to rotate. The lead screw 53 drives the two energy-absorbing friction plates 54 to move closer to each other to clamp the reset connecting plate 42. Through the friction between the energy-absorbing friction plates 54 and the reset connecting plate 42, energy is absorbed during the seat reset process, reducing the impact of the impact inertia on the occupant.

[0052] Obviously, the above-disclosed embodiments of the present invention are merely illustrative of the invention. The embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. It is neither necessary nor possible to exhaustively describe all embodiments herein.

Claims

1. A zero-gravity seat framework with an energy-absorbing return mechanism, characterized by, The utility model relates to a seat angle adjustment mechanism, which comprises a bottom support structure (1), a seat bottom frame structure (2), an angle adjustment motor (3), an angle adjustment assembly (4) and an energy-absorbing reset mechanism (5), the angle adjustment assembly (4) comprises an angle adjuster (41), a reset connecting plate (42), a rotating shaft (43), a front connecting support (44) and a hook lock assembly (45), the angle adjustment motor (3) is fixedly arranged on the bottom support structure (1), the angle adjustment motor (3) drives the rotating shaft (43) to rotate through the angle adjuster (41), the rotating shaft (43) is connected with the hook lock assembly (45), the rotating shaft (43) is arranged through the reset connecting plate (42), the hook lock assembly (45) has a locking state and an unlocking state, when the hook lock assembly (45) is in the locking state, the relative position of the rotating shaft (43) and the reset connecting plate (42) is fixed, when the hook lock assembly (45) is in the unlocking state, the reset connecting plate (42) can rotate relative to the rotating shaft (43), one end of the front connecting support (44) is rotatably connected with the reset connecting plate (42), the other end is rotatably connected with one end of the seat bottom frame structure (2), and the other end of the seat bottom frame structure (2) is rotatably arranged on the bottom support structure (1), the energy-absorbing reset mechanism (5) comprises two energy-absorbing friction plates (54) and a driving assembly, the reset connecting plate (42) is located between the two energy-absorbing friction plates (54), and the driving assembly is used for driving the two energy-absorbing friction plates (54) to move close to each other so that the two energy-absorbing friction plates (54) clamp the reset connecting plate (42), or driving the two energy-absorbing friction plates (54) to move away from each other so that the two energy-absorbing friction plates (54) are separated from the reset connecting plate (42). The side, close to the reset connecting plate (42), of each of the two energy-absorbing friction plates (54) is provided with anti-skid patterns.

2. The zero-gravity seat frame with energy-absorbing return mechanism of claim 1, wherein: The driving assembly comprises a motor support (51), a driving motor (52) and a lead screw (53), the driving motor (52) is fixedly arranged on the motor support (51), the motor support (51) is fixedly arranged on the bottom support structure (1), the lead screw (53) is fixedly connected with the output end of the driving motor (52), the lead screw (53) is provided with a first external thread and a second external thread with opposite screw directions, one energy-absorbing friction plate (54) is screwed with the first external thread, and the other energy-absorbing friction plate (54) is screwed with the second external thread.

3. The zero-gravity seat frame with energy-absorbing return mechanism of claim 1, wherein: The energy-absorbing reset mechanism further comprises a friction plate support (55) and a guide shaft (56), the guide shaft (56) is slidably arranged through the two energy-absorbing friction plates (54), and the guide shaft (56) is fixedly arranged on the friction plate support (55).

4. The zero-gravity seat frame with energy-absorbing return mechanism of claim 1, wherein: ​ 5. The zero-gravity seat frame with energy-absorbing reclining mechanism of claim 1, wherein: The hook-and-lock assembly (45) comprises a detonator (451), a latch wire (452), a cam (453), a hook-and-lock (454) and a toothed plate (455), the toothed plate (455) is fixedly connected with the rotating shaft (43), the hook-and-lock (454) is rotatably connected with the reset connecting plate (42), one end of the cam (453) is rotatably arranged on the reset connecting plate (42) and has a first position and a second position, the detonator (451) is connected with the other end of the cam (453) through the latch wire (452), when the cam (453) is located at the first position, the cam (453) abuts against the first abutting part of the hook-and-lock (454) to make the hook-and-lock (454) engage with the toothed plate (455); when the cam (453) is located at the second position, the cam (453) abuts against the second abutting part of the hook-and-lock (454) to make the hook-and-lock (454) disengage from the toothed plate (455).

6. The zero-gravity seat framework with energy-absorbing return mechanism of claim 5, wherein: The hook-and-lock assembly (45) further comprises a torsion spring (456), which is arranged between the cam (453) and the reset connecting plate (42).

7. The zero-gravity seat framework with energy-absorbing return mechanism of claim 5, wherein: The hook-and-lock assembly (45) further comprises a cover (457), which is connected with the reset connecting plate (42) through bolts, the cam (453) is located in the cover (457), a sliding column (4531) is fixedly arranged on the cam (453), the cover (457) is provided with a guide sliding groove (4571), and the sliding column (4531) is slidably arranged in the guide sliding groove (4571).

8. The zero-gravity seat frame with energy-absorbing return mechanism of claim 5, wherein: The number of the angle adjusting assemblies (4) is two, and the two ends of the synchronous rod (6) are fixedly connected with the angle adjusters (41) in the two angle adjusting assemblies (4), respectively.

9. A vehicle characterized by: The number of the energy-absorbing reset mechanisms (5) is also two, and the two energy-absorbing reset mechanisms (5) are respectively arranged for the reset connecting plates (42) in the two angle adjusting assemblies (4).

10. The vehicle of claim 9, characterized in that: The zero-gravity seat framework with the energy-absorbing reset mechanism is provided. The seat back support (7) and the backrest angle adjusting structure are further provided, the seat back support (7) is rotatably connected with the seat bottom frame structure (2), and the backrest angle adjusting structure is used for adjusting the included angle between the seat back support (7) and the seat bottom frame structure (2).

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