A car seat with quick reset capability

Abstract

This invention relates to the field of automotive seat technology, and discloses a car seat with rapid reset capability, comprising: a seat portion including a base and a seat cushion; a backrest rotatably mounted on the seat portion; and a linkage mechanism disposed between the base and the seat cushion, comprising a spring energy storage module, a first linkage, a second linkage, and a third linkage; the spring energy storage module includes an energy storage spring, a mounting bracket, an inner sliding sleeve, a latch, and a lead screw motor, with the energy storage spring disposed between the mounting bracket and the inner sliding sleeve; when the seat cushion is in a zero-gravity position, the energy storage spring is compressed, and the latch locks the inner sliding sleeve; when the latch unlocks, the elastic potential energy of the energy storage spring springs the inner sliding sleeve and the lead screw motor apart, allowing the seat cushion to quickly reset. The advantages of this invention are that, in achieving rapid reset of the car seat, there is no need to develop a large motor; a small motor can suffice, reducing the power supply requirements of the entire vehicle, effectively lowering costs, and facilitating product upgrades; furthermore, the reset process does not damage any components, and the process is reversible.

Description

Technical Field

[0001] This invention relates to the field of automotive seat technology, and more particularly to an automotive seat that can be quickly reset. Background Technology

[0002] As users demand higher levels of comfort in car seats, many models are now equipped with car seats featuring a zero-gravity mode. This mode aims to mimic the weightlessness experienced by astronauts in space, minimizing the pressure on the passenger's body and effectively alleviating passenger fatigue.

[0003] When a car collision occurs, if the car seat is in zero-gravity mode, the seat belt offers limited protection for the passenger. To reduce injury to passengers in a collision, the car seat needs to be able to quickly return to its designed position (the passenger is sitting upright in the car seat).

[0004] In existing technologies, in order to enable car seats to quickly return to their designed position in zero-gravity mode, a large motor is generally used to achieve rapid reset, and a collapsible energy absorption structure is achieved through locking plates or damping components. However, the large motor has high requirements for the power supply of the whole vehicle, and for old seats, the large motor needs to be redeveloped, which is costly. Furthermore, the collapsible energy absorption is irreversible, and after a collision, the energy absorption structure needs to be replaced to enable it to function normally. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by the present invention is to propose a car seat that has low requirements for the power supply of the whole vehicle, does not require the redevelopment of the motor, has low cost, and is reversible and can be quickly reset.

[0006] The technical solution adopted by this invention to solve its technical problem is to propose a car seat that can be quickly reset and has a zero-gravity state mode, including:

[0007] The seat includes a base and a cushion movably disposed on the base; the cushion has a designed position state and a zero-gravity position state, and when the car seat is in the zero-gravity mode, the cushion is in the zero-gravity position state.

[0008] The backrest is rotatably mounted on the seat.

[0009] A linkage mechanism is disposed between the base and the seat cushion and can drive the seat cushion; the linkage mechanism includes a spring energy storage module, a first link, a second link and a third link, the first link is rotatably connected to both the seat cushion and the base, the second link is rotatably connected to both the base and the third link, and the end of the third link away from the second link is rotatably connected to the seat cushion;

[0010] The spring energy storage module includes an energy storage spring, a mounting bracket, an inner sliding sleeve, a locking buckle, and a lead screw motor. The mounting bracket is rotatably mounted on the base and has a guide sleeve disposed on it. The inner sliding sleeve is slidably mounted in the guide sleeve and has a nut disposed on it. The lead screw motor is rotatably connected to the second connecting rod, and the lead screw of the motor passes through the nut and is threadedly connected to it. The locking buckle is movably mounted on the mounting bracket and can lock the inner sliding sleeve. The energy storage spring is disposed between the mounting bracket and the inner sliding sleeve.

[0011] When the seat cushion is in the zero-gravity position, the energy storage spring is compressed, and the latch locks the inner sliding sleeve; when the latch is unlocked, the elastic potential energy of the energy storage spring springs the inner sliding sleeve and the lead screw motor away from the guide sleeve, so that the seat cushion quickly returns to its original position.

[0012] Furthermore, the spring energy storage module can drive the seat cushion to switch between the zero-gravity position state and the designed position state;

[0013] When the seat cushion moves from the designed position to the zero-gravity position, the front end of the seat cushion rises by 15 degrees.

[0014] Furthermore, when the latch is unlocked, the elastic potential energy of the energy storage spring drives the inner sliding sleeve and the lead screw motor to move a distance greater than or equal to 28mm away from the guide sleeve.

[0015] Furthermore, when the seat cushion switches from the zero-gravity position to the designed position, the energy storage spring extends, and the length of the spring energy storage module extends by 28mm.

[0016] When the seat cushion switches from the designed position state to the zero gravity state, the length of the spring energy storage module is shortened by 28mm, and the energy storage spring is compressed.

[0017] Furthermore, the second connecting rod is provided with a waist groove, and the third connecting rod is provided with a limiting member, which is slidably disposed in the waist groove;

[0018] When the seat cushion is in the designed position, the limiting member is at one end of the lumbar groove; when the seat cushion is in the zero-gravity position, the limiting member is at the other end of the lumbar groove.

[0019] Furthermore, the inner sliding sleeve has a locking piece with a first locking groove. The latch is rotatably mounted on the mounting bracket and can be locked into the first locking groove to lock the inner sliding sleeve.

[0020] Furthermore, the inner sliding sleeve is provided with a second locking groove, and the mounting bracket is rotatably provided with an anti-rebound locking tongue;

[0021] When the latch unlocks from the inner sliding sleeve, the energy storage spring springs the inner sliding sleeve and the lead screw motor apart and moves them away from the guide sleeve, causing the seat cushion to quickly return to the designed position. At this time, the anti-rebound locking tongue locks into the second locking groove to prevent the inner sliding sleeve from rebounding back.

[0022] Furthermore, a first reset torsion spring is provided between the mounting bracket and the anti-rebound latch. The force exerted by the first reset torsion spring on the anti-rebound latch causes the anti-rebound latch to tend to move in its locking direction.

[0023] A second reset torsion spring is provided between the mounting bracket and the latch. The force exerted by the second reset torsion spring on the latch causes the latch to tend to move in its locking direction.

[0024] Furthermore, when the latch is unlocked, the energy storage spring pushes against the inner sliding sleeve and the lead screw motor to move, causing the seat cushion to quickly return to the designed position.

[0025] The lead screw motor can engage with the nut via the lead screw to reset the inner sliding sleeve, and the inner sliding sleeve compresses the energy storage spring.

[0026] Furthermore, the first link, the second link, the third link, the spring energy storage module, and the seat cushion form a five-bar linkage.

[0027] Compared with the prior art, the present invention has at least the following beneficial effects:

[0028] In this invention, a spring energy storage module is installed between the seat cushion and the base. The inner sliding sleeve of the spring energy storage module is slidably mounted in a guide sleeve on the mounting bracket. The nut on the inner sliding sleeve is threadedly connected to a lead screw motor. When the car seat is in zero-gravity mode, the seat cushion is in a zero-gravity position. At this time, the spring energy storage module is in an energy storage state and is not triggered. The energy storage spring is compressed between the mounting bracket and the inner sliding sleeve, and the latch is locked in the first locking groove of the locking plate on the inner sliding sleeve, locking the inner sliding sleeve and ensuring the energy storage spring is in an energy storage state. When a collision occurs, the control system receives a collision signal and controls the latch to unlock, i.e., the latch disengages from the first locking groove. The elastic potential energy of the energy storage spring is released instantaneously, driving the inner sliding sleeve and the lead screw motor to move away from the guide sleeve. The total length of the spring energy storage module rapidly increases by 28 mm, allowing the seat cushion to quickly return to its designed position from the zero-gravity position, ensuring passenger safety. Furthermore, after switching, the anti-rebound latch automatically locks into the second locking groove, preventing the inner sliding sleeve from rebounding and ensuring structural reliability. This car seat achieves rapid reset without the need for a large motor, resulting in low power requirements for the entire vehicle. When improving existing car seats, there's no need to develop a large motor, reducing product upgrade costs. Moreover, after the seat cushion resets, the lead screw motor, through the engagement of the lead screw and nut, drives the inner sliding sleeve towards the energy storage spring. The inner sliding sleeve returns to its initial position, compressing the energy storage spring and restoring the spring energy storage mechanism to its energy storage state. During the repeated switching between the triggered state and energy storage state, no structural damage is required; the process is reversible and reusable. Attached Figure Description

[0029] Figure 1 This is a structural schematic diagram of the car seat of the present invention (in the designed position state);

[0030] Figure 2 This is a schematic diagram of the linkage mechanism installed in a car seat.

[0031] Figure 3 for Figure 1 Side view;

[0032] Figure 4 A simplified structural diagram of the linkage mechanism and the seat cushion when the cushion is in the designed position.

[0033] Figure 5 A simplified diagram of the linkage mechanism and the seat cushion when the cushion is in a zero-gravity position;

[0034] Figure 6 This is a schematic diagram of the spring energy storage module in the energy storage state.

[0035] Figure 7 This is a schematic diagram of the structure of the spring energy storage module after it is triggered;

[0036] Figure 8 This is an exploded view of the spring energy storage module.

[0037] In the picture:

[0038] 1. Seat; 11. Base; 110. Limiting component; 12. Seat cushion;

[0039] 2. Backrest;

[0040] 3. Linkage mechanism; 30. Spring energy storage module; 301. Mounting bracket; 301A. Guide sleeve; 302. Energy storage spring; 303. Inner sliding sleeve; 303A. Nut; 303B. Locking plate; 303C. Second locking groove; 304. Locking buckle; 305. Lead screw motor; 306. Anti-rebound locking tongue; 307. First reset torsion spring; 308. Second reset torsion spring; 31. First connecting rod; 32. Second connecting rod; 320. Waist groove; 33. Third connecting rod. Detailed Implementation

[0041] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0042] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0043] Furthermore, in this invention, descriptions involving terms such as "first," "second," and "a" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0046] like Figures 1-5 As shown, a car seat with quick reset capability has a zero-gravity mode and a designed position mode. In the zero-gravity mode, the passenger can recline on the car seat, making them feel close to zero gravity, thus relaxing their entire body and improving comfort. In the designed position mode, the passenger can sit upright on the car seat. The passenger can switch between these modes according to their actual needs. The car seat in this embodiment mainly includes: a seat 1, a backrest 2, and a linkage mechanism 3; the seat 1 mainly includes a base 11 and a cushion 12; the linkage mechanism 3 mainly includes a spring energy storage module 30, a first link 31, a second link 32, and a third link 33; the spring energy storage module 30 mainly includes an energy storage spring 302, a mounting bracket 301, an inner sliding sleeve 303, a latch 304, a lead screw motor 305, and an anti-rebound locking tongue 306.

[0047] The seat 1 includes a base 11 and a seat cushion 12 movably mounted on the base 11. The seat cushion 12 has a designed position state and a zero-gravity position state. When the car seat is in zero-gravity mode, the seat cushion 12 is in the zero-gravity position state; when the car seat is in the designed position state mode, i.e., upright mode, the seat cushion 12 is in the designed position state. When the seat cushion 12 moves from the designed position state to the zero-gravity position state, the front end of the seat cushion 12 rises by 15 degrees, i.e., the front end of the seat cushion 12 rises upward and the rear end lowers. When the seat cushion 12 switches from the zero-gravity position state to the designed position state, the front end of the seat cushion 12 lowers by 15 degrees and the rear end of the seat cushion 12 rises by 15 degrees. Of course, the seat cushion 12 can also have more position states, which will not be elaborated here. The seat cushion 12 is movably mounted on the base 11 via a linkage mechanism 3, which can drive the seat cushion 12 to switch between the designed position state and the zero-gravity position state. To improve passenger comfort, a leg support mechanism is provided at the front end of the seat 1 to support the passenger's legs. This leg support mechanism is adjustable and can be extended, retracted, and rotated according to the passenger's actual needs.

[0048] The backrest 2 is rotatably mounted on the seat 1. An angle adjuster is located on the backrest 2 for tilt adjustment. When the car seat is in its designed position mode, the backrest 2 is upright. When the car seat is in zero-gravity mode, the backrest 2 rotates backward, and the car seat is in a semi-reclined position. When the car seat is also equipped with a fully reclined mode, the backrest 2 can rotate backward and flatten relative to the seat 1, allowing passengers to lie down comfortably.

[0049] A linkage mechanism 3 is disposed between the base 11 and the seat cushion 12 and can drive the seat cushion 12. The linkage mechanism 3 includes a spring energy storage module 30, a first link 31, a second link 32, and a third link 33. Both ends of the first link 31 are rotatably connected to both the seat cushion 12 and the base 11. The second link 32 is rotatably connected to both the base 11 and the third link 33. The second link 32 is formed by the fixed connection of links 32A and 32B, and the included angle between links 32A and 32B is fixed during operation. The end of the third link 33 furthest from the second link 32 is rotatably connected to the seat cushion 12. The first link 31, second link 32, third link 33, spring energy storage module 30, and seat cushion 12 form a five-bar linkage mechanism. Figure 4 and Figure 5 As shown, the five-bar linkage has three fixed points. The seat cushion 12 can be moved via the spring energy storage module 30, allowing it to switch between a zero-gravity position and a designed position. A waist groove 320 is provided on the second link 32, and a limiting member 110, preferably a limiting screw, is provided on the base 11. When the seat cushion 12 is in the designed position, the limiting member 110 is at one end of the waist groove 320; when the seat cushion 12 is in the zero-gravity position, the limiting member 110 is at the other end of the waist groove 320. That is, by cooperating with the waist groove 320, the upper and lower limits of the seat cushion 12 can be restricted.

[0050] like Figures 6-8 and combined Figure 2 , Figures 4-5As shown, the spring energy storage module 30 includes an energy storage spring 302, a mounting bracket 301, an inner sliding sleeve 303, a latch 304, a lead screw motor 305, and an anti-rebound locking tongue 306. The mounting bracket 301 is rotatably mounted on the base 11, and a guide sleeve 301A is configured on the mounting bracket 301. The mounting bracket 301 is welded and fixed by multiple brackets to ensure ease of manufacturing. The mounting bracket 301 provides installation positions for other components in the spring energy storage module 30. The guide sleeve 301A is fixedly connected to the mounting bracket 301 and serves to guide the sliding of the inner sliding sleeve 303. The inner sliding sleeve 303 is slidably disposed in the guide sleeve 301A, and the guide sleeve 301A has a rectangular through hole. The outer wall of the inner sliding sleeve 303 is rectangular, matching the rectangular through hole of the guide sleeve 301A. The inner sleeve 303 is equipped with a nut 303A, which is used to cooperate with the lead screw of the lead screw motor 305 to form a lead screw nut 303A mechanism. The inner sleeve 303 has a locking piece 303B with a first locking groove, which is rectangular. A latch 304 is rotatably mounted on the mounting bracket 301 and can be locked into the first locking groove to lock the inner sleeve 303. It can be understood that the nut 303A is fixedly connected to the inner sleeve 303, making the nut 303A a part of the inner sleeve 303 and linked with it. The locking piece 303B is fixedly connected to the end of the inner sleeve 303 near the latch 304, and can also be considered as part of the inner sleeve 303. The inner sleeve 303, locking piece 303B, and nut 303A are fixed together as a single unit. An energy storage spring 302 is disposed between the mounting bracket 301 and the inner sliding sleeve 303. One end of the energy storage spring 302 abuts against the mounting bracket 301, and the other end of the energy storage spring 302 abuts against the inner sliding sleeve 303. A lead screw motor 305 is rotatably mounted on the second connecting rod 32, and the lead screw of the lead screw motor 305 passes through the nut 303A and is threadedly connected to the nut 303A, forming a lead screw and nut 303A mechanism. When the lead screw of the lead screw motor 305 rotates, it can drive the nut 303A to move along the lead screw, thereby causing the inner sliding sleeve 303 to move along the lead screw. The latch 304 is rotatably mounted on the mounting bracket 301 and can lock the inner sliding sleeve 303. The function of the latch 304 is to lock the inner sliding sleeve 303. When the spring energy storage module 30 is in the energy storage state, the latch 304 is locked in the first locking groove of the locking piece 303B, so that the energy storage spring 302 is in the compressed energy storage state.

[0051] In actual use, when the seat cushion 12 is in a zero-gravity position, the energy storage spring 302 is compressed, and the latch 304 locks the inner sliding sleeve 303. When the latch 304 unlocks, the elastic potential energy of the energy storage spring 302 causes the inner sliding sleeve 303 and the lead screw motor 305 to spring away from the guide sleeve 301A, allowing the seat cushion 12 to quickly reset and return to its designed position. Specifically, when the seat cushion 12 switches from a zero-gravity position to its designed position, the energy storage spring 302 extends, and the total length of the spring energy storage module 30 extends by 28mm. That is, when the latch 304 unlocks, the elastic potential energy of the energy storage spring 302 drives the inner sliding sleeve 303 and the lead screw motor 305 to move 28mm away from the guide sleeve 301A. When the seat cushion 12 switches from its designed position to a zero-gravity state, the length of the spring energy storage module 30 shortens by 28mm, and the energy storage spring 302 is compressed.

[0052] Preferably, a second locking groove 303C is provided on the inner sliding sleeve 303, and an anti-rebound locking tongue 306 is rotatably provided on the mounting bracket 301, with the anti-rebound locking tongue 306 located at the end of the guide sleeve 301A away from the latch 304. When the latch 304 disengages from the first locking groove to unlock, the energy storage spring 302 drives the inner sliding sleeve 303 and the lead screw motor 305 to move 28 mm away from the latch 304, after which the seat cushion 12 quickly returns to the designed position, and the anti-rebound locking tongue 306 automatically locks into the second locking groove 303C to prevent the inner sliding sleeve 303 from rebounding back, ensuring structural stability.

[0053] Furthermore, a first return torsion spring 307 is provided between the mounting bracket 301 and the anti-rebound latch 306. The force exerted by the first return torsion spring 307 on the anti-rebound latch 306 causes the anti-rebound latch 306 to tend to move in its locking direction. Specifically, the anti-rebound latch 306 is rotatably mounted on the mounting bracket 301 via a hinged central shaft, and the first return torsion spring 307 is provided between the mounting bracket 301 and the anti-rebound latch 306. The first return torsion spring 307 is sleeved on the hinged central shaft, and one torsion arm of the first return torsion spring 307 abuts against the mounting bracket 301, while the other torsion arm abuts against the anti-rebound latch 306. The force exerted by the first return torsion spring 307 on the anti-rebound latch 306 causes the anti-rebound latch 306 to tend to move in its locking direction. A second return torsion spring 308 is provided between the mounting bracket 301 and the latch 304. The force exerted by the second return torsion spring 308 on the latch 304 causes the latch 304 to tend to move in its locking direction. Specifically, the latch 304 is hinged to the mounting bracket 301 via a hinge shaft. The second return torsion spring 308 is sleeved on the hinge shaft, with one torsion arm of the second return torsion spring 308 abutting against the mounting bracket 301 and the other torsion arm abutting against the latch 304. The force exerted by the second return torsion spring 308 on the latch 304 causes the latch 304 to tend to move in its locking direction.

[0054] Furthermore, a connection hole is provided on the latch 304 for connecting a pull cable. When the spring energy storage module 30 needs to be triggered, simply pull the pull cable to rotate the latch 304, causing it to disengage from the first locking groove on the locking plate 303B, and the energy storage spring 302 instantly releases its elastic potential energy. A connection hole is provided on the anti-rebound latch 306 for connecting a pull cable, and the anti-rebound latch 306 can be unlocked by pulling the cable, so that the lead screw motor 305 can drive the inner sliding sleeve 303 and the energy storage spring 302 to reset. During use, the second return torsion spring 308 ensures that the latch 304 can be reliably locked in the first locking groove of the locking plate 303B. When the cable connected to the latch 304 is pulled, the latch 304 is driven to disengage from the first locking groove of the locking plate 303B and unlock. Then the inner sliding sleeve 303 slides open. When the inner sliding sleeve 303 returns to its original position, the elastic force of the second return spring allows the latch 304 to automatically lock into the first locking groove of the locking plate 303B.

[0055] When the latch 304 unlocks, the energy storage spring 302 pushes against the inner sliding sleeve 303 and the lead screw motor 305, causing the seat cushion 12 to quickly return to its designed position. The lead screw motor 305, through its lead screw and nut 303A, then resets the inner sliding sleeve 303, which in turn compresses the energy storage spring 302. The rotation of the lead screw motor 305 also allows the spring energy storage module 30 to return to its shorter length. The spring energy storage module 30 is reusable without requiring replacement or damage to any parts, resulting in low operating costs.

[0056] In actual use, this embodiment sets a spring energy storage module 30 between the seat cushion 12 and the base 11. The inner sliding sleeve 303 of the spring energy storage module 30 is slidably disposed in the guide sleeve 301A on the mounting bracket 301. The nut 303A on the inner sliding sleeve 303 is threadedly connected to the lead screw motor 305. When the car seat is in a zero-gravity state, the seat cushion 12 is in a zero-gravity position. At this time, the spring energy storage module 30 is in an energy storage state and is not triggered. The energy storage spring 302 is compressed between the mounting bracket 301 and the inner sliding sleeve 303, and the latch 304 is locked in the first locking groove of the locking piece 303B on the inner sliding sleeve 303, locking the inner sliding sleeve 303 and ensuring that the energy storage spring 302 is in an energy storage state. When a car collision occurs, the control system receives a collision signal and controls the latch 304 to unlock, i.e., the latch 304 disengages from the first locking groove. The elastic potential energy of the energy storage spring 302 is released instantaneously, driving the inner sliding sleeve 303 and the lead screw motor 305 to move away from the guide sleeve 301A. The total length of the spring energy storage module 30 rapidly increases by 28 mm, allowing the seat cushion 12 to quickly return from a zero-gravity position to its designed position, ensuring passenger safety. Furthermore, after switching, the anti-rebound latch 306 automatically locks into the second locking groove 303C to prevent the moving module from rebounding, ensuring structural reliability. In this car seat, rapid repositioning can be achieved without a large motor, resulting in low power requirements for the entire vehicle. When improving existing car seats, there is no need to develop a large motor, reducing replacement costs. Furthermore, after reset, the lead screw motor 305, through the cooperation of the lead screw and nut 303A, drives the inner sliding sleeve 303 to move closer to the energy storage spring 302. The inner sliding sleeve 303 can be reset to the initial position and compress the energy storage spring 302, so that the spring energy storage mechanism returns to the energy storage state. During the switching between the trigger state and the energy storage state, the spring energy storage mechanism does not need to damage any structure. The process is reversible and reusable.

[0057] The working principle of the car seat in this embodiment is as follows: When the car seat is in zero gravity mode, the seat cushion 12 is in a zero gravity position. At this time, the spring energy storage module 30 is in an energy storage state, that is, the energy storage spring 302 is compressed between the inner sliding sleeve 303 and the mounting bracket 301. The spring energy storage module 30 is in its shortest state, and the latch 304 is locked in the first locking groove on the locking piece 303B, ensuring that the energy storage spring 302 cannot pop open the inner sliding sleeve 303. Upon collision, the car's control system receives a collision signal and activates the first latch 304 via a cable. This causes the latch 304 to rotate and disengage from the first locking groove. The inner sliding sleeve 303 is no longer confined by the latch 304, and the energy storage spring 302 instantly releases its elastic potential energy, acting on the inner sliding sleeve 303. This pushes the inner sliding sleeve 303 and the lead screw motor 305 to move away from the latch 304, stopping after approximately 28 millimeters. During this movement, the linkage mechanism 3 drives the seat cushion 12 to quickly return to its designed position. Furthermore, the anti-rebound latch 306 locks into the second locking groove 303C on the inner sliding sleeve 303. This allows the car seat to quickly return to its original position using a small motor, reducing injury to passengers during a collision. When the spring energy storage module 30 needs to be reset, the lead screw motor 305 rotates, causing the inner sliding sleeve 303 to reset and compressing the energy storage spring 302, restoring it to its compressed energy storage state. During this process, when the inner sliding sleeve 303 can no longer extend or retract, the lead screw motor 305 will move towards the inner sliding sleeve 303, causing the lead screw motor 305 to reset. When it returns to its initial position, i.e., the shortest position, the lead screw motor 305 is stalled and stops working. The spring energy storage module 30 is compressed by 28 mm and returns to its energy storage state.

[0058] In this solution, the rapid reset of the car seat can be achieved without the need to develop a large motor; a small motor is sufficient. This reduces the power supply requirements of the entire vehicle, effectively lowers costs, and facilitates product upgrades. Furthermore, the reset process does not damage any components and is reversible.

Claims

1. A quick-retractable car seat having a zero-gravity mode of operation, characterized in that , comprising: a seat part comprising a base and a cushion movably arranged on the base; the cushion has a design position state and a zero-gravity position state, when the car seat is in the zero-gravity mode, the cushion is in the zero-gravity position state; a backrest rotatably arranged on the seat part; a linkage mechanism arranged between the base and the cushion and drivable for the cushion; the linkage mechanism comprises a spring energy storage module, a first linkage, a second linkage and a third linkage, the first linkage is rotatably connected with the cushion and the base, the second linkage is rotatably connected with the base and the third linkage, and one end of the third linkage away from the second linkage is rotatably connected with the cushion; the spring energy storage module comprises an energy storage spring, a mounting bracket, an inner sliding sleeve, a lock catch and a lead screw motor, the mounting bracket is rotatably arranged on the base, and a guide sleeve is arranged on the mounting bracket; the inner sliding sleeve is slidably arranged in the guide sleeve, and a nut is arranged on the inner sliding sleeve; the lead screw motor is rotatably connected with the second linkage, and the lead screw of the lead screw motor is threaded in the nut and is in threaded connection with the nut; the lock catch is movably arranged on the mounting bracket and can lock the inner sliding sleeve; the energy storage spring is arranged between the mounting bracket and the inner sliding sleeve; when the cushion is in the zero-gravity position state, the energy storage spring is compressed, and the lock catch locks the inner sliding sleeve; when the lock catch is unlocked, the elastic potential energy of the energy storage spring drives the inner sliding sleeve and the lead screw motor to move away from the guide sleeve side, so that the cushion is quickly reset.

2. The quickly repositionable automotive seat of claim 1, wherein, The spring energy storage module can drive the cushion to switch between the zero-gravity position state and the design position state; when the cushion moves from the design position state to the zero-gravity position state, the front end of the cushion is lifted by 15 degrees.

3. The quickly repositionable automotive seat of claim 1 or 2, wherein, When the lock catch is unlocked, the distance that the elastic potential energy of the energy storage spring drives the inner sliding sleeve and the lead screw motor to move away from the guide sleeve side is greater than or equal to 28mm.

4. The quick-recoverable automobile seat according to claim 1, wherein When the cushion switches from the zero-gravity position state to the design position state, the energy storage spring is stretched, and the length of the spring energy storage module is elongated by 28mm; When the cushion switches from the design position state to the zero-gravity state, the length of the spring energy storage module is shortened by 28mm, and the energy storage spring is compressed.

5. The quick-recoverable automobile seat according to claim 1, wherein A waist groove is arranged on the second linkage, and a limiting piece is arranged on the base and arranged in the waist groove; when the cushion is in the design position state, the limiting piece is at one end of the waist groove; when the cushion is in the zero-gravity position state, the limiting piece is at the other end of the waist groove.

6. The quick-recoverable automobile seat according to claim 1, wherein A lock piece is arranged on the inner sliding sleeve, a first lock groove is arranged on the lock piece, the lock catch is rotatably arranged on the mounting bracket, and the lock catch can be locked into the first lock groove to lock the inner sliding sleeve.

7. The quickly repositionable automotive seat of claim 1 or 6, wherein, A second lock groove is arranged on the inner sliding sleeve, and an anti-rebound lock tongue is rotatably arranged on the mounting bracket; When the lock is unlocked from the inner sleeve, the energy storage spring pushes the inner sleeve and the screw rod motor away from the guide sleeve, moving the cushion to the designed position.

8. The quickly repositionable automotive seat of claim 7, wherein, A first reset torsion spring is arranged between the mounting bracket and the anti-rebound lock tongue, and the force of the first reset torsion spring on the anti-rebound lock tongue makes the anti-rebound lock tongue have a tendency to move in the locking direction. A second reset torsion spring is arranged between the mounting bracket and the lock, and the force of the second reset torsion spring on the lock makes the lock have a tendency to move in the locking direction.

9. The quick-recoverable automobile seat according to claim 1, wherein When the lock is unlocked, the energy storage spring pushes the inner sleeve and the screw rod motor, and the cushion is quickly reset to the designed position. The screw rod motor can cooperate with the nut through the screw rod to reset the inner sleeve, and the inner sleeve compresses the energy storage spring.

10. The quick-recoverable automobile seat according to claim 1, wherein The first connecting rod, the second connecting rod, the third connecting rod, the spring energy storage module, and the cushion form a five-link mechanism.

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