Automobile seat capable of being quickly reset

Abstract

The invention relates to the technical field of automobile seats, and discloses a quickly resettable automobile seat, comprising: a seat part comprising a base cushion; the backrest is rotatably arranged on the seat part; the connecting rod mechanism is arranged between the base and the cushion and comprises a spring energy storage module, a first connecting rod, a second connecting rod and a third connecting rod; the spring energy storage module comprises an energy storage spring, a mounting bracket, an inner sliding sleeve, a lock catch and a screw rod motor; the energy storage spring is arranged between the mounting bracket and the inner sliding sleeve; when the cushion is in a 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 bounces off the inner sliding sleeve and the lead screw motor, so that the seat cushion is quickly reset. The quick resetting device has the advantages that the quick resetting of the automobile seat can be realized without developing a large motor and a small motor, the power supply requirement on the whole automobile is low, the cost can be effectively reduced, and the product upgrading is convenient; and any part is not damaged in the resetting process, and the process is reversible.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, in particular to an automobile seat capable of being quickly reset. Background Art

[0002] As users' demand for car seat comfort increases, many car models are equipped with car seats with zero-gravity mode, which is designed to imitate the feeling of weightlessness experienced by astronauts in space. In zero-gravity mode, the pressure on the passenger's body can be minimized, which can effectively relieve passenger fatigue.

[0003] When a car collides, if the car seat is in zero gravity mode, the seat belt has limited protection for the passengers. In order to reduce the damage to the passengers caused by the collision, the car seat needs to be able to quickly return to the designed position (the passenger sits upright on the car seat).

[0004] In the prior art, in order to enable the car seat to quickly return to the designed position in zero gravity mode, a large motor is generally used to achieve rapid resetting, and crumple energy absorption is achieved through structures such as locking plates or damping parts. However, the large motor has high requirements on the power supply of the entire vehicle. For old seats, the large motor needs to be redeveloped, which is costly. In addition, crumple energy absorption is irreversible. When a collision occurs, the energy absorption structure needs to be replaced for normal use. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a car seat that has low power supply requirements for the entire vehicle, does not require the redevelopment of a motor, has low cost, and is reversible and can be quickly reset.

[0006] The technical solution adopted by the present invention to solve the technical problem is to provide a car seat that can be quickly reset and has a zero gravity state mode, including: The seat portion comprises a base and a cushion movably arranged on the base; the cushion has a design 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; a backrest rotatably disposed on the seat; A connecting rod mechanism is arranged between the base and the seat cushion and can drive the seat cushion; the connecting rod mechanism includes a spring energy storage module, a first connecting rod, a second connecting rod and a third connecting rod, the first connecting rod is rotatably connected to the seat cushion and the base, the second connecting rod is rotatably connected to the base and the third connecting rod, and one end of the third connecting rod away from the second connecting rod is rotatably connected to the seat cushion; The spring energy storage module comprises an energy storage spring, a mounting bracket, an inner sleeve, a lock and a screw motor. The mounting bracket is rotatably arranged on the base, and a guide sleeve is arranged on the mounting bracket; the inner sleeve is slidably arranged in the guide sleeve, and a nut is arranged on the inner sleeve; the screw motor is rotatably connected to the second connecting rod, and the screw of the screw motor is inserted into the nut and threadedly connected to the nut; the lock is movably arranged on the mounting bracket to lock the inner sleeve; the energy storage spring is arranged between the mounting bracket and the inner sleeve; When the seat cushion is in the zero gravity position, the energy storage spring is compressed and the lock locks the inner sleeve; when the lock is unlocked, the elastic potential energy of the energy storage spring bounces the inner sleeve and the screw motor away from the guide sleeve, so that the seat cushion is quickly reset.

[0007] Furthermore, the spring energy storage module can drive the seat cushion to switch between the zero gravity position state and the design position state; When the seat cushion moves from the design position to the zero gravity position, the front end of the seat cushion is lifted by 15 degrees.

[0008] Furthermore, when the lock is unlocked, the elastic potential energy of the energy storage spring drives the inner sliding sleeve and the screw motor to move away from the guide sleeve by a distance greater than or equal to 28 mm.

[0009] Further, when the seat cushion is switched from the zero gravity position to the design position, the energy storage spring is extended, and the length of the spring energy storage module is extended by 28 mm; When the seat cushion is switched from the design position state to the zero gravity state, the length of the spring energy storage module is shortened by 28 mm, and the energy storage spring is compressed.

[0010] Furthermore, the second connecting rod is provided with a waist groove, the third connecting rod is provided with a limiting member, and the limiting member is slidably disposed in the waist groove; When the seat cushion is in the design position, the limiting member is located at one end of the waist groove; when the seat cushion is in the zero gravity position, the limiting member is located at the other end of the waist groove.

[0011] Furthermore, the inner sleeve has a locking plate, the locking plate is provided with a first locking groove, the locking buckle is rotatably arranged on the mounting bracket, and the locking buckle can be locked into the first locking groove to lock the inner sleeve.

[0012] Furthermore, a second locking groove is provided on the inner sliding sleeve, and an anti-rebound locking tongue is rotatably provided on the mounting bracket; When the lock buckle is unlocked from the inner sleeve, the energy storage spring bounces the inner sleeve and the screw motor apart and moves them away from the guide sleeve, so that the seat cushion is quickly reset to the designed position state, and the anti-rebound lock tongue is locked into the second lock groove to prevent the inner sleeve from rebounding back.

[0013] Furthermore, a first reset torsion spring is provided between the mounting bracket and the anti-rebound lock tongue, and the force exerted by the first reset torsion spring on the anti-rebound lock tongue causes the anti-rebound lock tongue to have a tendency to move in its locking direction; A second reset torsion spring is provided between the mounting bracket and the lock catch, and the force exerted by the second reset torsion spring on the lock catch causes the lock catch to tend to move in its locking direction.

[0014] Furthermore, when the lock is unlocked, the energy storage spring pushes the inner sliding sleeve and the screw motor to move, so that the seat cushion is quickly reset to the designed position state; The screw motor can cooperate with the nut via a screw to reset the inner sleeve, and the inner sleeve compresses the energy storage spring.

[0015] Furthermore, the first connecting rod, the second connecting rod, the third connecting rod, the spring energy storage module and the seat cushion form a five-link mechanism.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: In the present invention, a spring energy storage module is arranged between the seat cushion and the base, and the inner sleeve in the spring energy storage module is slidably arranged in the guide sleeve on the mounting bracket, and the nut on the inner sleeve is threadedly connected with the screw motor. When the car seat is in the zero gravity state mode, the seat cushion is in the zero gravity position state, and the spring energy storage module is in the energy storage state at this time, and is not triggered. The energy storage spring is compressed between the mounting bracket and the inner sleeve, and the lock is locked in the first lock groove of the lock plate on the inner sleeve, and the inner sleeve is locked to ensure that the energy storage spring is in the energy storage state. When the car collides, the control system receives the collision signal, controls the lock to unlock, that is, the lock is disengaged from the first lock groove, and the elastic potential energy of the energy storage spring is released instantly, driving the inner sleeve and the screw motor to move in the direction away from the guide sleeve, and the total length of the spring energy storage module is quickly lengthened by 28 mm, so that the seat cushion is quickly reset from the zero gravity position state to the design position state, ensuring the safety of passengers. After switching, the anti-rebound lock tongue automatically locks into the second lock groove to prevent the inner sleeve from rebounding back, thereby ensuring the reliability of the structure. In this car seat, the car seat can be quickly reset without the use of a large motor, and the power supply demand for the entire vehicle is low. When improving existing car seats, there is no need to develop a large motor, which can reduce the cost of product updates. In addition, after the seat cushion is reset, the screw motor cooperates with the screw and the nut to drive the inner sleeve to move toward the energy storage spring side. The inner sleeve can be reset to the initial position and the energy storage spring can be compressed, so that the spring energy storage mechanism returns to the energy storage state. During the switching process between the trigger state and the energy storage, the spring energy storage mechanism does not need to damage any structure, and the process is reversible and reusable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the automobile seat of the present invention (in the designed position state); Figure 2 The figure is a schematic diagram of the installation of the connecting rod mechanism in the car seat; Figure 3 for Figure 1 Side view of Figure 4 It is a simplified structural diagram of the connecting rod mechanism and the seat cushion when the seat cushion is in the design position; Figure 5 It is a simplified structural diagram of the connecting rod mechanism and the seat cushion when the seat cushion is in a zero gravity position; Figure 6 It is a structural schematic diagram of the spring energy storage module when it is in the energy storage state; Figure 7 It is a structural schematic diagram of the spring energy storage module after being triggered; Figure 8 This is an exploded view of the spring energy storage module.

[0018] In the figure: 1. seat; 11. base; 110. stopper; 12. cushion; 2. Backrest; 3. Connecting rod mechanism; 30. Spring energy storage module; 301. Mounting bracket; 301A. Guide sleeve; 302. Energy storage spring; 303. Inner sleeve; 303A. Nut; 303B. Locking plate; 303C. Second locking groove; 304. Lock buckle; 305. 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 DESCRIPTION

[0019] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0020] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0024] like Figure 1-Figure 5As shown, a car seat that can be quickly reset has a zero gravity state mode and a design position state mode. In the zero gravity state mode, the passenger can half-lye on the car seat, so that the passenger feels close to being in a zero gravity state, so that the passenger can relax the whole body and improve the comfort of the passenger. In the design position state mode, the passenger can sit upright on the car seat, and the passenger can switch between these modes according to their actual needs. The car seat of this embodiment mainly includes: a seat 1, a backrest 2 and a connecting rod mechanism 3; the seat 1 mainly includes a base 11 and a cushion 12; the connecting rod mechanism 3 mainly includes a spring energy storage module 30, a first connecting rod 31, a second connecting rod 32 and a third connecting rod 33; the spring energy storage module 30 mainly includes an energy storage spring 302, a mounting bracket 301, an inner sliding sleeve 303, a lock buckle 304, a screw motor 305 and an anti-rebound lock tongue 306.

[0025] The seat portion 1 comprises a base 11 and a cushion 12 movably arranged on the base 11; the cushion 12 has a design position state and a zero gravity position state. When the car seat is in the zero gravity mode, the cushion 12 is in the zero gravity position state; when the car seat is in the design position state mode, that is, the upright mode, the cushion 12 is in the design position state. When the cushion 12 moves from the design position state to the zero gravity position state, the front end of the cushion 12 is lifted by 15 degrees, that is, the front end of the cushion 12 is lifted upward and the rear end is lowered. When the cushion 12 switches from the zero gravity position state to the design position state, the front end of the cushion 12 is lowered by 15 degrees, and the rear end of the cushion 12 is lifted upward by 15 degrees. Of course, the cushion 12 can also have more position states, which will not be specifically described here. The cushion 12 is movably arranged on the base 11 through a connecting rod mechanism 3, and the connecting rod mechanism 3 can drive the cushion 12 to switch between the design position state and the zero gravity position state. In order to improve the comfort of passengers, a leg rest mechanism is further provided at the front end of the seat 1 for supporting the legs of passengers, and the leg rest mechanism is adjustable and can be adjusted forward and backward and rotated according to the actual needs of the passengers.

[0026] The backrest 2 is rotatably arranged on the seat 1; an angle adjuster is arranged at the backrest 2 for adjusting the inclination of the backrest 2. When the car seat is in the design position mode, the backrest 2 is in an upright state; when the car seat is in the zero gravity mode, the backrest 2 rotates backwards and the car seat is in a semi-lying state. When the car seat is also configured in a large lying mode, the backrest 2 can be rotated backwards and laid flat relative to the seat 1, and the passenger can lie on the car seat.

[0027] The connecting rod mechanism 3 is arranged between the base 11 and the seat cushion 12, and can drive the seat cushion 12; the connecting rod mechanism 3 includes a spring energy storage module 30, a first connecting rod 31, a second connecting rod 32 and a third connecting rod 33. The two ends of the first connecting rod 31 are rotatably connected to the seat cushion 12 and the base 11 respectively. The second connecting rod 32 is rotatably connected to the base 11 and the third connecting rod 33. The second connecting rod 32 is formed by a connecting rod 32A and a connecting rod 32B that are fixedly connected. During operation, the angle between the connecting rod 32A and the connecting rod 32B is fixed. The end of the third connecting rod 33 away from the second connecting rod 32 is rotatably connected to the seat cushion 12. Among them, the first connecting rod 31, the second connecting rod 32, the third connecting rod 33, the spring energy storage module 30 and the seat cushion 12 form a five-connecting rod mechanism, such as Figure 4 and Figure 5 As shown, there are three fixed points in the five-link mechanism, and the spring energy storage module 30 can drive the seat cushion 12 to move, so that the seat cushion 12 can switch between the zero gravity position state and the design position state. Among them, a waist groove 320 is provided on the second link 32, and a limiter 110 is provided on the base 11. The limiter 110 is preferably a limit screw, and the limiter 110 is set in the waist groove 320. When the seat cushion 12 is in the design position state, the limiter 110 is at one end of the waist groove 320; when the seat cushion 12 is in the zero gravity position state, the limiter 110 is at the other end of the waist groove 320. That is, the upper limit position and the lower limit position of the seat cushion 12 can be limited by the limit screw and the waist groove 320.

[0028] like Figure 6-Figure 8 Combined with Figure 2 , Figure 4-Figure 5As shown, the spring energy storage module 30 includes an energy storage spring 302, a mounting bracket 301, an inner sleeve 303, a lock 304, a screw motor 305 and an anti-rebound lock tongue 306. The mounting bracket 301 is rotatably arranged on the base 11, and a guide sleeve 301A is arranged on the mounting bracket 301. The mounting bracket 301 is welded and fixed by multiple brackets to ensure that the mounting bracket 301 is easy to manufacture. The mounting bracket 301 provides an installation position for other components in the spring energy storage module 30. The guide sleeve 301A is fixedly connected to the mounting bracket 301, and the guide sleeve 301A plays a role in guiding the inner sleeve 303 to slide. The inner sleeve 303 is slidably arranged in the guide sleeve 301A, and the guide sleeve 301A has a rectangular through hole. The outer wall of the inner sleeve 303 is rectangular and matches the rectangular through hole of the guide sleeve 301A. The inner sleeve 303 is provided with a nut 303A, which is used to cooperate with the screw of the screw motor 305 to form a screw nut 303A mechanism. The inner sleeve 303 is provided with a locking plate 303B, which is provided with a first locking groove, which is a rectangular groove, and the lock buckle 304 is rotatably arranged on the mounting bracket 301, and the lock buckle 304 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, so that the nut 303A is a part of the inner sleeve 303 and is linked with the inner sleeve 303. The locking plate 303B is fixedly connected to one end of the inner sleeve 303 close to the lock buckle 304, and can also be regarded as a part of the inner sleeve 303. The inner sleeve 303, the locking plate 303B and the nut 303A are fixed as a whole. The energy storage spring 302 is arranged between the mounting bracket 301 and the inner sleeve 303, one end of the energy storage spring 302 is movably opposed to the mounting bracket 301, and the other end of the energy storage spring 302 is movably opposed to the inner sleeve 303. The screw motor 305 is rotatably arranged on the second connecting rod 32, and the screw of the screw motor 305 is inserted into the nut 303A and is threadedly connected with the nut 303A to form a screw nut 303A mechanism. When the screw of the screw motor 305 rotates, the nut 303A can be driven to move along the screw, so that the inner sleeve 303 can move along the screw. The lock buckle 304 is rotatably disposed on the mounting bracket 301 and can lock the inner sleeve 303. The lock buckle 304 is used to lock the inner sleeve 303. When the spring energy storage module 30 is in the energy storage state, the lock buckle 304 is locked in the first locking groove of the locking plate 303B, so that the energy storage spring 302 is in a compressed energy storage state.

[0029] In actual use, when the seat cushion 12 is in the zero gravity position state, the energy storage spring 302 is compressed, and the lock 304 locks the inner sleeve 303. When the lock 304 is unlocked, the elastic potential energy of the energy storage spring 302 will bounce the inner sleeve 303 and the screw motor 305 away from the guide sleeve 301A side, so that the seat cushion 12 is quickly reset and the seat cushion 12 is restored to the design position state. Specifically, when the seat cushion 12 is switched from the zero gravity position state to the design position state, the energy storage spring 302 stretches, and the total length of the spring energy storage module 30 is extended by 28mm, that is, when the lock 304 is unlocked, the elastic potential energy of the energy storage spring 302 drives the inner sleeve 303 and the screw motor 305 to move away from the guide sleeve 301A side by 28mm. When the seat cushion 12 is switched from the design position state to the zero gravity state, the length of the spring energy storage module 30 is shortened by 28mm, and the energy storage spring 302 is compressed.

[0030] Preferably, a second locking groove 303C is provided on the inner sleeve 303, and an anti-rebound locking tongue 306 is rotatably provided on the mounting bracket 301, and the anti-rebound locking tongue 306 is located at the end of the guide sleeve 301A away from the lock buckle 304. When the lock buckle 304 is released from the first locking groove, the energy storage spring 302 drives the inner sleeve 303 and the screw motor 305 to move 28 mm to the side away from the lock buckle 304, and the seat cushion 12 quickly returns to the designed position state, and the anti-rebound locking tongue 306 is automatically locked into the second locking groove 303C to prevent the inner sleeve 303 from rebounding back, thereby ensuring the structural stability.

[0031] Furthermore, a first return torsion spring 307 is provided between the mounting bracket 301 and the anti-rebound lock tongue 306, and the force of the first return torsion spring 307 on the anti-rebound lock tongue 306 makes the anti-rebound lock tongue 306 have a tendency to move in its locking direction. Specifically, the anti-rebound lock tongue 306 is rotatably mounted on the mounting bracket 301 through a hinged central axis, and a first return torsion spring 307 is provided between the mounting bracket 301 and the anti-rebound lock tongue 306, and the first return torsion spring 307 is sleeved on the hinged central axis, and one torsion arm of the first return torsion spring 307 is against the mounting bracket 301, and the other torsion arm of the first return torsion spring 307 is against the anti-rebound lock tongue 306, and the force of the first return torsion spring 307 on the anti-rebound lock tongue 306 makes the anti-rebound lock tongue 306 have a tendency to move in its locking direction. A second reset torsion spring 308 is provided between the mounting bracket 301 and the lock buckle 304. The force of the second reset torsion spring 308 on the lock buckle 304 makes the lock buckle 304 tend to move in its locking direction. Specifically, the lock buckle 304 is hinged to the mounting bracket 301 through a hinge shaft, the second reset torsion spring 308 is sleeved on the hinge shaft, and one torsion arm of the second reset torsion spring 308 is against the mounting bracket 301, and the other torsion arm of the second reset torsion spring 308 is against the lock buckle 304. The force of the second reset torsion spring 308 on the lock buckle 304 makes the lock buckle 304 tend to move in its locking direction.

[0032] In addition, a connection hole is provided on the lock buckle 304, and the connection hole is used for connecting a cable. When the spring energy storage module 30 needs to be triggered, only the cable needs to be pulled to rotate the lock buckle 304, and the lock buckle 304 is disengaged from the first lock groove on the lock plate 303B, and the energy storage spring 302 releases elastic potential energy instantly. A connection hole for connecting a cable is provided on the anti-rebound lock tongue 306, and the anti-rebound lock tongue 306 can be pulled by the cable to unlock the anti-rebound lock tongue 306, so that the screw motor 305 can drive the inner sleeve 303 and the energy storage spring 302 to reset. During use, the second return torsion spring 308 ensures that the lock buckle 304 can be reliably locked in the first lock slot of the lock plate 303B. When the cable connected to the lock buckle 304 is pulled to drive the lock buckle 304 to disengage from the first lock slot of the lock plate 303B and unlock, the inner sleeve 303 slides open. When the inner sleeve 303 is reset, the elastic force of the second return spring enables the lock buckle 304 to automatically lock into the first lock slot of the lock plate 303B.

[0033] When the lock 304 is unlocked, the energy storage spring 302 pushes the inner sleeve 303 and the screw motor 305 to move, so that the seat cushion 12 is quickly reset to the designed position state, and the screw motor 305 can cooperate with the nut 303A through the screw rod to reset the inner sleeve 303, and the inner sleeve 303 compresses the energy storage spring 302. The screw rotation of the screw motor 305 can also restore the spring energy storage module 30 to a shorter length state, and the spring energy storage module 30 can be reused without replacing or damaging any parts, and the use cost is low.

[0034] In actual use, the present embodiment sets a spring energy storage module 30 between the seat cushion 12 and the base 11, and the inner sleeve 303 in the spring energy storage module 30 is slidably set in the guide sleeve 301A on the mounting bracket 301, and the nut 303A on the inner sleeve 303 is threadedly connected with the screw motor 305. When the car seat is in the zero gravity state mode, the seat cushion 12 is in the zero gravity position state, and the spring energy storage module 30 is in the energy storage state and is not triggered. The energy storage spring 302 is compressed between the mounting bracket 301 and the inner sleeve 303, and the lock buckle 304 is locked in the first lock groove of the lock plate 303B on the inner sleeve 303, locking the inner sleeve 303 to ensure that the energy storage spring 302 is in the energy storage state. When the car collides, the control system receives the collision signal, controls the lock buckle 304 to unlock, that is, the lock buckle 304 is disengaged from the first lock groove, and the elastic potential energy of the energy storage spring 302 is released instantly, driving the inner sliding sleeve 303 and the screw motor 305 to move away from the guide sleeve 301A. The total length of the spring energy storage module 30 quickly increases by 28 mm, so that the seat cushion 12 is quickly reset from the zero gravity position state to the design position state to ensure the safety of the passengers. And after switching, the anti-rebound lock tongue 306 is automatically locked into the second lock groove 303C to prevent the motion module from rebounding back and ensure the reliability of the structure. In this car seat, the car seat can be quickly reset without a large motor, and the power supply demand for the whole vehicle is low. When the existing car seat is improved, there is no need to develop a large motor, which can reduce the update cost. Moreover, after resetting, the screw motor 305 cooperates with the nut 303A through the screw rod to drive the inner sleeve 303 to move toward the energy storage spring 302 side, and the inner 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 process of switching between the trigger state and the energy storage state, the spring energy storage mechanism does not need to damage any structure, and the process is reversible and reusable.

[0035] The working principle of the car seat of this embodiment is as follows: when the car seat is in zero gravity mode, the seat cushion 12 is correspondingly in a zero gravity position state, and the spring energy storage module 30 is in an energy storage state, that is, the energy storage spring 302 is compressed between the inner sleeve 303 and the mounting bracket 301, the spring energy storage module 30 is in the shortest state, and the lock buckle 304 is locked in the first lock groove on the lock plate 303B at this time, ensuring that the energy storage spring 302 cannot bounce the inner sleeve 303 open. When a collision occurs, the control system of the automobile receives a collision signal and controls the first lock buckle 304 to be pulled by the cable, so that the lock buckle 304 rotates and disengages from the first lock groove. The inner sleeve 303 is no longer limited by the lock buckle 304, and the energy storage spring 302 instantly releases elastic potential energy, acts on the inner sleeve 303, and pushes the inner sleeve 303 and the screw motor 305 to move away from the lock buckle 304, and stops after moving about 28 mm. During the movement, the seat cushion 12 is driven to quickly return to the designed position state through the connecting rod mechanism 3, and the anti-rebound lock tongue 306 is locked into the second lock groove 303C on the inner sleeve 303. The automobile seat can be quickly reset by a small motor, which can reduce the damage to passengers in the event of a collision. When the spring energy storage module 30 needs to be reset, the screw motor 305 rotates to reset the inner sleeve 303 and compress the energy storage spring 302 to restore it to the compressed energy storage state. During this process, when the inner sleeve 303 can no longer move telescopically, the screw motor 305 will move toward the inner sleeve 303 to reset the screw motor 305. When it returns to its initial position, that is, the shortest position, the screw motor 305 is blocked and stops working. The spring energy storage module 30 is compressed by 28 mm and returns to the energy storage state.

[0036] In this solution, there is no need to develop a large motor to achieve the rapid resetting of the car seat, a small motor can be used, and the power supply requirements for the entire vehicle are low, which can effectively reduce costs and facilitate product upgrades. Moreover, no parts need to be damaged during the resetting process, and the process is reversible.

Claims

1. A car seat capable of rapid resetting, having a zero gravity mode, characterized in that ,include: The seat portion comprises a base and a cushion movably arranged on the base; the cushion has a design 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; a backrest rotatably disposed on the seat; A connecting rod mechanism is arranged between the base and the seat cushion and can drive the seat cushion; the connecting rod mechanism includes a spring energy storage module, a first connecting rod, a second connecting rod and a third connecting rod, the first connecting rod is rotatably connected to the seat cushion and the base, the second connecting rod is rotatably connected to the base and the third connecting rod, and one end of the third connecting rod away from the second connecting rod is rotatably connected to the seat cushion; The spring energy storage module comprises an energy storage spring, a mounting bracket, an inner sleeve, a lock and a screw motor. The mounting bracket is rotatably arranged on the base, and a guide sleeve is arranged on the mounting bracket; the inner sleeve is slidably arranged in the guide sleeve, and a nut is arranged on the inner sleeve; the screw motor is rotatably connected to the second connecting rod, and the screw of the screw motor is inserted into the nut and threadedly connected to the nut; the lock is movably arranged on the mounting bracket to lock the inner sleeve; the energy storage spring is arranged between the mounting bracket and the inner sleeve; When the seat cushion is in the zero gravity position, the energy storage spring is compressed and the lock locks the inner sleeve; when the lock is unlocked, the elastic potential energy of the energy storage spring bounces the inner sleeve and the screw motor away from the guide sleeve, so that the seat cushion is quickly reset.

2. The quickly repositionable vehicle seat according to claim 1, characterized in that: The spring energy storage module can drive the seat cushion to switch between the zero gravity position state and the design position state; When the seat cushion moves from the design position to the zero gravity position, the front end of the seat cushion is lifted by 15 degrees.

3. The quickly resetting vehicle seat according to claim 1 or 2, characterized in that: When the lock is unlocked, the elastic potential energy of the energy storage spring drives the inner sliding sleeve and the screw motor to move away from the guide sleeve by a distance greater than or equal to 28 mm.

4. The quickly repositionable vehicle seat according to claim 1, characterized in that: When the seat cushion switches from the zero gravity position to the design position, the energy storage spring stretches, and the length of the spring energy storage module extends by 28 mm; When the seat cushion is switched from the design position state to the zero gravity state, the length of the spring energy storage module is shortened by 28 mm, and the energy storage spring is compressed.

5. The quickly repositionable vehicle seat according to claim 1, characterized in that: The second connecting rod is provided with a waist groove, the base is provided with a limiting member, and the limiting member is arranged in the waist groove; When the seat cushion is in the design position, the limiting member is located at one end of the waist groove; when the seat cushion is in the zero gravity position, the limiting member is located at the other end of the waist groove.

6. The quickly repositionable vehicle seat according to claim 1, characterized in that: The inner sliding sleeve is provided with a locking plate, the locking plate is provided with a first locking groove, the locking buckle is rotatably arranged on the mounting bracket, and the locking buckle can be locked into the first locking groove to lock the inner sliding sleeve.

7. The quickly repositionable vehicle seat according to claim 1 or 6, characterized in that: The inner sliding sleeve is provided with a second locking groove, and the mounting bracket is rotatably provided with an anti-rebound locking tongue; When the lock buckle is unlocked from the inner sleeve, the energy storage spring bounces the inner sleeve and the screw motor apart and moves them away from the guide sleeve, so that the seat cushion is quickly reset to the designed position state, and the anti-rebound lock tongue is locked into the second lock groove to prevent the inner sleeve from rebounding back.

8. The quickly repositionable vehicle seat according to claim 7, characterized in that: A first reset torsion spring is provided between the mounting bracket and the anti-rebound lock tongue, and the first reset torsion spring exerts a force on the anti-rebound lock tongue so that the anti-rebound lock tongue has a tendency to move in its locking direction; A second reset torsion spring is provided between the mounting bracket and the lock catch, and the force exerted by the second reset torsion spring on the lock catch causes the lock catch to tend to move in its locking direction.

9. The quickly repositionable vehicle seat according to claim 1, characterized in that: When the lock is unlocked, the energy storage spring pushes the inner sliding sleeve and the screw motor to move, so that the seat cushion is quickly reset to the designed position; The screw motor can cooperate with the nut via a screw to reset the inner sleeve, and the inner sleeve compresses the energy storage spring.

10. The quickly repositionable vehicle seat according to claim 1, characterized in that: The first connecting rod, the second connecting rod, the third connecting rod, the spring energy storage module and the seat cushion form a five-link mechanism.

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