Spring energy storage mechanism and seat cushion assembly

Abstract

The invention relates to the technical field of automobile seats, and discloses a spring energy storage mechanism and a seat cushion assembly.The spring energy storage mechanism comprises a mounting body, a spring, a spring, a spring and a spring, the lock catch is movably arranged on the mounting main body; the movement module comprises a lead screw motor and an inner sliding sleeve, the inner sliding sleeve is arranged in the guide sleeve in a sliding mode, and a nut and a locking structure capable of being locked by the lock catch are arranged on the inner sliding sleeve; the energy storage spring is arranged between the mounting main body and the motion module; when the lock catch is locked on the locking structure, the energy storage spring can be compressed between the mounting main body and the motion module and is in a compressed state; and after the lock catch is unlocked from the locking structure, the elastic potential energy of the energy storage spring acts on the movement module, so that the movement module moves towards one side far away from the lock catch. The spring energy storage mechanism has the advantages that the spring energy storage mechanism can be used for driving the seat cushion to reset quickly without a large motor, and the spring energy storage mechanism is low in requirement for power supply of the whole vehicle, low in cost, simple in structure and reusable.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, and in particular to a spring energy storage mechanism and a seat cushion assembly. Background Art

[0002] The car seat is equipped with a zero-gravity mode, which can effectively relieve passengers' fatigue caused by long-distance car rides. When switched to this mode, the car seat cushion needs to be rotated several dozen degrees from the designed position to raise its front end. When a collision occurs, in order to reduce the damage to passengers, the seat cushion needs to be able to quickly return to the designed position.

[0003] In existing car seats, the seat cushion is generally reset by a motor-driven screw mechanism. The seat cushion can be quickly returned to its original position by increasing the power of the motor. However, large motors are expensive and have high requirements for the power supply of the entire vehicle. Summary of the invention

[0004] 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 spring energy storage mechanism and a seat cushion assembly which are low in cost and can drive the seat cushion to return quickly.

[0005] The technical solution adopted by the present invention to solve the technical problem is to propose a spring energy storage mechanism, comprising: An installation body, wherein the installation body is provided with a guide sleeve; A lock buckle, movably disposed on the mounting body and close to one end of the guide sleeve; A motion module and an energy storage spring, wherein the motion module is at the other end of the guide sleeve and comprises a screw motor and an inner sleeve, wherein the inner sleeve is slidably arranged in the guide sleeve, and a nut and a locking structure for the lock buckle to be locked are arranged on the inner sleeve, and the nut is movably sleeved on the screw of the screw motor to form a screw nut mechanism; the energy storage spring is arranged between the mounting body and the motion module; When the lock buckle is locked in the locking structure, the energy storage spring can be compressed between the mounting body and the motion module and is in a compressed state; and when the lock buckle is unlocked from the locking structure, the elastic potential energy of the energy storage spring acts on the motion module, causing the motion module to move to a side away from the lock buckle.

[0006] Furthermore, one end of the energy storage spring movably abuts against the installation body, and the other end of the energy storage spring movably abuts against the inner sliding sleeve.

[0007] Further, the locking structure is configured as a locking plate, which is arranged at one end of the inner sliding sleeve close to the lock buckle, and a first locking groove is provided on the locking plate; When the locking plate passes through the guide sleeve and extends toward the locking buckle, the locking buckle can be locked into the first locking groove to lock the locking plate, so that the energy storage spring is in a compressed energy storage state.

[0008] Further, a second locking groove is provided on the inner sliding sleeve, an anti-rebound locking tongue is movably provided on the mounting body, and the anti-rebound locking tongue is located at an end of the guide sleeve away from the lock buckle; When the lock buckle is unlocked from the locking structure, the energy storage spring drives the motion module to move a preset distance to a side away from the lock buckle, and then the anti-rebound lock tongue is locked into the second lock groove to prevent the inner sliding sleeve from rebounding back.

[0009] Furthermore, the anti-rebound lock tongue is rotatably arranged on the installation body, and a first reset torsion spring is arranged between the installation body and the anti-rebound lock tongue. The force of the first reset torsion spring on the anti-rebound lock tongue makes the anti-rebound lock tongue tend to move in its locking direction.

[0010] Furthermore, the lock buckle is rotatably arranged on the mounting body, and a second reset torsion spring is arranged between the lock buckle and the mounting body, and the force of the second reset torsion spring on the lock buckle makes the lock buckle tend to move in its locking direction.

[0011] Furthermore, the screw motor is provided with a mounting portion, through which the screw motor can be mounted, and the screw motor can drive the inner sleeve to move along the screw to reset the inner sleeve and compress the energy storage spring at the same time.

[0012] Furthermore, when the lock buckle is unlocked from the locking structure, the energy storage spring drives the motion module to move to a side away from the lock buckle for a distance greater than or equal to 28 mm, and then the anti-rebound lock tongue is locked into the second lock groove.

[0013] Furthermore, the anti-rebound lock tongue and the lock buckle are both provided with connection holes for connection with a pull wire, and the anti-rebound lock tongue and the lock buckle can be pulled by the pull wire respectively to unlock the anti-rebound lock tongue and the lock buckle.

[0014] The technical solution adopted by the present invention to solve the technical problem is to further provide a seat cushion assembly, comprising: A base and a five-link mechanism, wherein the seat cushion is configured as the second link in the five-link mechanism, and the spring energy storage mechanism is configured as the fifth link in the five-link mechanism; The five-link mechanism further includes a first link, a third link and a fourth link, one end of the first link is rotatably connected to the seat cushion, and the other end of the first link is rotatably connected to the base; one end of the third link is rotatably connected to the seat cushion, and the other end of the third link is rotatably connected to the fourth link; and the screw motor is rotatably connected to the fourth link, and the mounting body is rotatably arranged on the base; The seat cushion has a design position state and a zero gravity position state. When the seat cushion is in the zero gravity position state, the energy storage spring in the spring energy storage mechanism is in a compressed energy storage state; when the lock is unlocked from the locking structure, the elastic potential energy of the energy storage spring drives the motion module to move to a side away from the lock, so that the seat cushion switches to the design position state.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: In the present invention, the inner sleeve can be slidably arranged in the guide sleeve, and a nut structure is arranged on the inner sleeve, and the nut structure cooperates with the screw of the screw motor to form a screw nut mechanism, and the energy storage spring is arranged between the installation body and the motion module. When the spring energy storage mechanism is in the energy storage state, the energy storage spring is compressed between the motion module and the installation body, and at this time, the lock buckle is locked on the lock plate of the inner sleeve, and the inner sleeve is limited to ensure that the inner sleeve will not be pushed open by the elastic force of the energy storage spring. After the control lock buckle is unlocked from the lock plate on the inner sleeve, under the action of the elastic potential energy of the energy storage spring, the motion module quickly moves to the side away from the lock buckle, and is bounced open by the energy storage spring, and the spring energy storage mechanism outputs elastic potential energy. When the spring energy storage mechanism is applied to the car seat, the car seat can be quickly reset from the zero gravity state position to the design state position, and the car seat can be quickly reset without a large motor, and a small power motor can be used, and the power supply demand for the whole vehicle is low. Moreover, when the spring energy storage mechanism needs to restore the energy storage state, the screw of the screw motor in the motion module rotates, driving the inner sleeve to compress the energy storage spring, so that the spring energy storage mechanism can be quickly reset. During the repeated switching of triggering and energy storage, the spring energy storage mechanism does not need to damage any structure, and the process is reversible and reusable.

[0016] In the present invention, a second locking groove is provided on the inner sliding sleeve, and an anti-rebound locking tongue is movably provided on one end of the mounting body away from the lock buckle. When the spring energy storage mechanism is triggered, the motion module moves a certain distance, and the anti-rebound locking tongue is automatically locked into the second locking groove to prevent the motion module from rebounding back, thereby ensuring the reliability of the structure. When the inner sliding sleeve needs to be reset, the anti-rebound locking tongue is controlled to be unlocked from the second locking groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the spring energy storage mechanism of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure from another perspective; Figure 3 It is a plane diagram of the spring energy storage mechanism in the energy storage state; Figure 4 It is a plan view after the spring energy storage mechanism is triggered; Figure 5 for Figure 4 Stereoscopic image of Figure 6 It is an exploded diagram of the spring energy storage mechanism; Figure 7 It is a structural diagram of the installation body; Figure 8 for Figure 7 A schematic diagram of the structure from another perspective; Fig. 9 is a schematic diagram of the structure of the inner sleeve; Fig.10 for Fig. 9 A schematic diagram of the structure from another perspective; Fig.11 It is a structural schematic diagram of the seat cushion assembly of the present invention; Fig.12 It is a simplified structural diagram of the seat cushion in the seat cushion assembly when the seat cushion is in the design position; Fig.13 It is a simplified structural diagram of the seat cushion in the seat cushion assembly when the seat cushion is in the zero gravity position.

[0018] In the figure: 100. Spring energy storage mechanism; 1. Installation body; 10. Guide sleeve; 2. Lock buckle; 20. Second reset torsion spring; 250. Connecting hole; 3. Motion module; 30. Screw motor; 301. Mounting part; 302. Screw; 31. Inner sleeve; 310. Nut; 311. Locking structure; 311A. First locking groove; 312. Second locking groove; 4. Energy storage spring; 5. Anti-rebound lock tongue; 50. First reset torsion spring; 6. Base; 7. seat cushion; 71. first connecting rod; 73. third connecting rod; 74. fourth 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] Embodiment 1:

[0025] like Figure 1-Figure 6 As shown, a spring energy storage mechanism 100 mainly includes: a mounting body 1, a lock buckle 2, a motion module 3, an energy storage spring 4 and an anti-rebound lock tongue 5, wherein the motion module 3 mainly includes an inner sliding sleeve 31 and a screw motor 30.

[0026] like Figure 7-Figure 8 Combined with Figure 1-Figure 2 As shown, the installation body 1 is provided with a guide sleeve 10, which is fixedly connected to the installation body 1 and serves as a sliding guide for the inner sliding sleeve 31. The installation body 1 provides an installation position for other components. In order to facilitate manufacturing and processing, the installation body 1 is formed by a plurality of brackets fixedly connected. The lock buckle 2 and the anti-rebound lock tongue 5 can be rotatably installed on the installation body 1.

[0027] The lock buckle 2 is movably arranged on the installation body 1 and close to one end of the guide sleeve 10. The function of the lock buckle 2 is to lock the inner sleeve 31. When the spring energy storage mechanism 100 is in the energy storage state, the lock buckle 2 is locked at the locking plate (i.e., the locking structure 311) on the inner sleeve 31, so that the energy storage spring 4 is in a compressed energy storage state, that is, the spring energy storage mechanism 100 is in the energy storage state. Specifically, the lock buckle 2 is hinged to the installation body 1 through a hinge shaft, and a connecting hole 250 is provided on the lock buckle 2. The connecting hole 250 is used for cable connection. When the spring energy storage mechanism 100 needs to be triggered, it is only necessary to pull the cable to rotate the lock buckle 2, and the locking head on the lock buckle 2 is detached from the locking plate, and the energy storage spring 4 instantly releases the elastic potential energy. Among them, a second reset torsion spring 20 is provided between the lock buckle 2 and the installation body 1, the second reset torsion spring 20 is sleeved on the hinge shaft, and one torsion arm of the second reset torsion spring 20 is against the installation body 1, and the other torsion arm of the second reset torsion spring 20 is against the lock buckle 2, and the force of the second reset torsion spring 20 on the lock buckle 2 makes the lock buckle 2 have a tendency to move in its locking direction. During use, the second reset torsion spring 20 ensures that the lock buckle 2 can be reliably locked in the first lock groove 311A ​​of the lock plate. When the cable connected to the lock buckle 2 is pulled to drive the lock buckle 2 to disengage from the first lock groove 311A ​​of the lock plate and unlock, the inner sleeve 31 slides open, and when the inner sleeve 31 is reset, the elastic force of the second reset spring enables the lock buckle 2 to automatically lock into the first lock groove 311A ​​of the lock plate.

[0028] like Figure 9-10 Combined with Figure 1-Figure 6As shown, in the motion module 3 and the energy storage spring 4, the motion module 3 is at the other end of the guide sleeve 10, the energy storage spring 4 can drive the motion module 3 to stretch, and the motion module 3 includes a screw motor 30 and an inner sleeve 31, the inner sleeve 31 is slidably arranged in the guide sleeve 10, the guide sleeve 10 has a rectangular through hole, and the outer wall of the inner sleeve 31 is rectangular, matching the rectangular through hole of the guide sleeve 10. The inner sleeve 31 is provided with a nut 310 and a locking structure 311 for locking the lock buckle 2, and it can be understood that the nut 310 is fixedly connected to the inner sleeve 31, so that the nut 310 is a part of the inner sleeve 31 and is linked with the inner sleeve 31. The locking structure 311 is a locking plate, which is fixedly connected to one end of the inner sleeve 31 near the lock buckle 2, that is, the inner sleeve 31, the locking plate and the nut 310 are fixed as a whole, and a first locking groove 311A ​​is provided on the locking plate, and the first locking groove 311A ​​is a rectangular through groove. When the locking plate passes through the guide sleeve 10 and extends to the lock buckle 2, the lock buckle 2 can be locked into the first locking groove 311A, locking the locking plate, so that the energy storage spring 4 is in a compressed energy storage state, and the spring energy storage mechanism 100 is in an energy storage state. Among them, the nut 310 is movably sleeved on the screw 302 of the screw motor 30, and a screw nut mechanism is formed. The screw motor 30 can rotate through the screw 302 to drive the nut 310 to move along the screw 302, that is, the inner sleeve 31 moves along the screw 302. The energy storage spring 4 is arranged between the installation body 1 and the motion module 3. Specifically, one end of the energy storage spring 4 is movably opposed to the installation body 1, and the other end of the energy storage spring 4 is movably opposed to the inner sleeve 31. When the energy storage spring 4 quickly releases the elastic potential energy, the installation body 1 does not move, so the energy storage spring 4 will push the inner sleeve 31, causing the inner sleeve 31 to move in the direction away from the lock buckle 2, that is, the motion module 3 moves in the direction away from the lock buckle 2, and the overall length of the spring energy storage mechanism 100 is rapidly increased in an instant.

[0029] In actual use, when the lock buckle 2 is locked on the locking structure 311, i.e., the locking plate, the energy storage spring 4 can be compressed between the installation body 1 and the motion module 3, and is in a compressed state, i.e., a compressed energy storage state. When the lock buckle 2 is unlocked from the locking structure 311, the elastic potential energy of the energy storage spring 4 acts on the motion module 3, causing the motion module 3 to move to the side away from the lock buckle 2, instantly pushing the motion module 3 away, and making the overall length of the spring energy storage mechanism 100 instantly longer. When it is applied to a car seat, the seat cushion 7 can be quickly moved from the zero gravity position to the design position, realizing the reset of the seat cushion 7, and reducing the damage to the passengers when the car collides.

[0030] In this embodiment, the screw motor 30 is provided with a mounting portion 301, and the screw motor 30 can be installed through the mounting portion 301. For example, the screw motor 30 can be rotatably installed on the base 6 of the car seat through the mounting portion 301. The screw motor 30 can drive the inner sleeve 31 to move along the screw rod 302, reset the inner sleeve 31, and compress the energy storage spring 4 at the same time. That is, the screw motor 30 drives the inner sleeve 31 to slide, realizes the reset of the inner sleeve 31 and the energy storage spring 4, so that the spring energy storage mechanism 100 can be reused, and the rotation of the screw rod 302 of the screw motor 30 will also restore the spring energy storage mechanism 100 to a shorter length state, that is, the screw motor 30 will move to the side close to the lock buckle 2, and the spring energy storage mechanism 100 will restore the energy storage state as a whole.

[0031] In actual use, the inner sleeve 31 of this embodiment can be slidably arranged in the guide sleeve 10, and a nut structure is arranged on the inner sleeve 31. The nut 310 structure cooperates with the screw 302 of the screw motor 30 to form a screw nut mechanism, and the energy storage spring 4 is arranged between the installation body 1 and the motion module. When the spring energy storage mechanism 100 is in the energy storage state, the energy storage spring 4 is compressed between the motion module 3 and the installation body 1, and at this time, the lock buckle 2 is locked on the lock plate of the inner sleeve 31, and the inner sleeve 31 is limited to ensure that the inner sleeve 31 will not be pushed away by the elastic force of the energy storage spring 4. After the control lock buckle 2 is unlocked from the lock plate on the inner sleeve 31, under the action of the elastic potential energy of the energy storage spring 4, the motion module quickly moves to the side away from the lock buckle 2, and is bounced off by the energy storage spring 4, and the spring energy storage mechanism 100 outputs elastic potential energy. When the spring energy storage mechanism 100 is applied to a car seat, the car seat can be quickly reset from a zero gravity state position to a design state position. The car seat can be quickly reset without a large motor, and a small motor can be used, which has low power supply requirements for the entire vehicle. In addition, when the spring energy storage mechanism 100 needs to restore the energy storage state, the screw 302 of the screw motor 30 in the motion module 3 rotates to drive the inner sleeve 31 to compress the energy storage spring 4, so that the spring energy storage mechanism 100 can be quickly reset. The spring energy storage mechanism 100 does not need to damage any structure during the repeated switching between triggering and energy storage, and the process is reversible and reusable.

[0032] Preferably, in this embodiment, the inner sleeve 31 is provided with a second locking groove 312, and the mounting body 1 is movably provided with an anti-rebound lock tongue 5, and the anti-rebound lock tongue 5 is located at the end of the guide sleeve 10 away from the lock buckle 2. When the lock buckle 2 is unlocked from the locking structure 311, i.e., the locking plate, and the energy storage spring 4 drives the motion module 3 to move a preset distance to the side away from the lock buckle 2, the anti-rebound lock tongue 5 can be locked into the second locking groove 312 to prevent the inner sleeve 31 from rebounding back. Specifically, when the lock buckle 2 is unlocked from the locking structure 311, and the energy storage spring 4 drives the motion module 3 to move a distance greater than or equal to 28 mm to the side away from the lock buckle 2, the anti-rebound lock tongue 5 is locked into the second locking groove 312, i.e., the spring energy storage mechanism 100 has an instantaneous growth length of 28 mm.

[0033] Furthermore, the anti-rebound lock tongue 5 is rotatably mounted on the mounting body 1 through a hinged central axis, and a first reset torsion spring 50 is provided between the mounting body 1 and the anti-rebound lock tongue 5. The first reset torsion spring 50 is sleeved on the hinged central axis, and one torsion arm of the first reset torsion spring 50 is against the mounting body 1, and the other torsion arm of the first reset torsion spring 50 is against the anti-rebound lock tongue 5. The force of the first reset torsion spring 50 on the anti-rebound lock tongue 5 makes the anti-rebound lock tongue 5 have a tendency to move in its locking direction. In addition, a connection hole 250 for a pull wire connection is provided on the anti-rebound lock tongue 5, and the anti-rebound lock tongue 5 can be pulled by the pull wire to unlock the anti-rebound lock tongue 5, so that the screw motor 30 can drive the inner sleeve 31 and the energy storage spring 4 to reset.

[0034] In actual use, the second locking groove 312 is provided on the inner sliding sleeve 31 of this embodiment, and an anti-rebound locking tongue 5 is movably provided on the end of the installation body 1 away from the lock buckle 2. When the spring energy storage mechanism 100 is triggered, the motion module 3 moves a certain distance, and the anti-rebound locking tongue 5 is automatically locked into the second locking groove 312 to prevent the motion module from rebounding back and ensure the reliability of the structure. When the inner sliding sleeve 31 needs to be reset, the anti-rebound locking tongue 5 is controlled to be unlocked from the second locking groove 312.

[0035] The working principle of the spring energy storage mechanism 100 of this embodiment is as follows: in the initial state, that is, the spring energy storage mechanism 100 is in the energy storage state, the energy storage spring 4 is compressed between the installation body 1 and the inner sleeve 31, and the lock buckle 2 is locked in the first lock groove 311A ​​of the lock plate. At this time, the spring energy storage mechanism 100 is in the shortest length state, and the anti-rebound lock tongue 5 is not locked into the second lock groove 312. When it is necessary to trigger the spring energy storage mechanism 100, the control pulls the cable on the back side of the lock buckle 2 to rotate the lock buckle 2, and the lock buckle 2 is disengaged from the first lock groove 311A ​​of the lock plate. The inner sleeve 31 is no longer limited by the lock buckle 2, and the energy storage spring 4 instantly releases its elastic potential energy, pushing the inner sleeve 31 to move in the direction away from the lock buckle 2. The motion module as a whole moves in the direction away from the lock buckle 2 by about 28 mm (e.g. Figure 3 and Figure 4 As shown in FIG. 1 , the anti-rebound lock tongue 5 is locked into the second lock groove 312 on the inner sleeve 31, and the length of the spring energy storage mechanism 100 increases by 28 mm instantly. When the spring energy storage mechanism 100 needs to be reset, the screw motor 30 rotates to reset the inner sleeve 31, and compresses the energy storage spring 4 to restore it to the compressed energy storage state. In this process, when the inner sleeve 31 does not move telescopically, the screw motor 30 moves toward the inner sleeve 31 to reset the screw motor 30. When it returns to its initial position, i.e., the shortest position, the screw motor 30 is blocked, the screw motor 30 stops working, and the spring energy storage mechanism 100 is compressed by 28 mm again and restored to the energy storage state.

[0036] Embodiment 2:

[0037] like Figure 11-13 Combined with Figure 3-Figure 6 As shown, a seat cushion assembly of this embodiment mainly includes the following structures: The base 6 and the five-bar linkage, wherein the seat cushion 7 is configured as the second link in the five-bar linkage, and the spring energy storage mechanism 100 in the first embodiment is configured as the fifth link in the five-bar linkage.

[0038] The five-link mechanism also includes a first link 71, a third link 73 and a fourth link 74, wherein the fourth link 74 is formed by a fixed connection between a link 74A and a link 74B, one end of the first link 71 is rotatably connected to the rear end of the seat cushion 7, and the other end of the first link 71 is rotatably connected to the base 6; one end of the third link 73 is rotatably connected to the front end of the seat cushion 7, the other end of the third link 73 is rotatably connected to the link 74A in the fourth link 74, and the screw motor 30 is rotatably connected to the link 74B in the fourth link 74; the mounting body 1 is rotatably arranged on the base 6.

[0039] The seat cushion 7 has a design position state and a zero gravity position state. When the seat cushion 7 is in the zero gravity position state, the energy storage spring 4 in the spring energy storage mechanism 100 is in a compressed energy storage state; when a collision occurs, the lock buckle 2 is unlocked from the locking structure 311, and the elastic potential energy of the energy storage spring 4 drives the motion module 3 to move to the side away from the lock buckle 2, so that the seat cushion 7 switches to the design position state. In this process, the length of the spring energy storage mechanism 100 increases by 28 mm (such as Figure 3 and Figure 4 As shown in FIG. 1 , the front part of the seat cushion 7 drops by 15 degrees. In the design position state, the screw motor 30 rotates to reset the spring energy storage mechanism 100, and the overall length is shortened by 28 mm. When the seat cushion 7 switches to the zero gravity state, the front part of the seat cushion 7 is lifted by 15 degrees.

[0040] In this solution, the spring energy storage mechanism 100 can be used to drive the seat cushion 7 to quickly reset, and it can be achieved without a large motor. It has low power supply requirements for the entire vehicle, low cost, and a simple overall structure and can be reused.

Claims

1. A spring energy storage mechanism, characterized in that: include: An installation body, wherein the installation body is provided with a guide sleeve; A lock buckle, movably disposed on the mounting body and close to one end of the guide sleeve; A motion module and an energy storage spring, wherein the motion module is at the other end of the guide sleeve and comprises a screw motor and an inner sleeve, wherein the inner sleeve is slidably arranged in the guide sleeve, and a nut and a locking structure for the lock buckle to be locked are arranged on the inner sleeve, and the nut is movably sleeved on the screw of the screw motor to form a screw nut mechanism; the energy storage spring is arranged between the mounting body and the motion module; When the lock buckle is locked in the locking structure, the energy storage spring can be compressed between the mounting body and the motion module and is in a compressed state; and when the lock buckle is unlocked from the locking structure, the elastic potential energy of the energy storage spring acts on the motion module, causing the motion module to move to a side away from the lock buckle.

2. The spring energy storage mechanism according to claim 1, characterized in that: One end of the energy storage spring movably contacts the installation body, and the other end of the energy storage spring movably contacts the inner sliding sleeve.

3. The spring energy storage mechanism according to claim 1, characterized in that: The locking structure is configured as a locking plate, which is arranged at one end of the inner sliding sleeve close to the lock buckle, and a first locking groove is provided on the locking plate; When the locking plate passes through the guide sleeve and extends toward the locking buckle, the locking buckle can be locked into the first locking groove to lock the locking plate, so that the energy storage spring is in a compressed energy storage state.

4. The spring energy storage mechanism according to any one of claims 1 to 3, characterized in that: The inner sliding sleeve is provided with a second locking groove, the mounting body is movably provided with an anti-rebound locking tongue, and the anti-rebound locking tongue is located at an end of the guide sleeve away from the lock buckle; When the lock buckle is unlocked from the locking structure, the energy storage spring drives the motion module to move a preset distance to a side away from the lock buckle, and then the anti-rebound lock tongue is locked into the second lock groove to prevent the inner sliding sleeve from rebounding back.

5. The spring energy storage mechanism according to claim 4, characterized in that: The anti-rebound lock tongue is rotatably arranged on the installation body, and a first reset torsion spring is arranged between the installation body and the anti-rebound lock tongue. The force of the first reset torsion spring on the anti-rebound lock tongue makes the anti-rebound lock tongue tend to move in its locking direction.

6. The spring energy storage mechanism according to claim 1, characterized in that: The lock buckle is rotatably arranged on the installation body, and a second reset torsion spring is arranged between the lock buckle and the installation body. The force exerted by the second reset torsion spring on the lock buckle makes the lock buckle tend to move in its locking direction.

7. The spring energy storage mechanism according to claim 1, characterized in that: The screw motor is provided with a mounting portion, through which the screw motor can be mounted, and the screw motor can drive the inner sleeve to move along the screw, reset the inner sleeve, and compress the energy storage spring at the same time.

8. The spring energy storage mechanism according to claim 4, characterized in that: When the lock buckle is unlocked from the locking structure, the energy storage spring drives the motion module to move to a side away from the lock buckle for a distance greater than or equal to 28 mm, and then the anti-rebound lock tongue is locked into the second lock groove.

9. The spring energy storage mechanism according to claim 4, characterized in that: The anti-rebound lock tongue and the lock buckle are both provided with connection holes for connecting with a pull wire, and the anti-rebound lock tongue and the lock buckle can be pulled by the pull wire respectively to unlock the anti-rebound lock tongue and the lock buckle.

10. A seat cushion assembly, characterized in that: Also includes: A base and a five-bar linkage, wherein the seat cushion is configured as a second link in the five-bar linkage, and the spring energy storage mechanism according to any one of claims 1 to 9 is configured as a fifth link in the five-bar linkage; The five-link mechanism further includes a first link, a third link and a fourth link, one end of the first link is rotatably connected to the seat cushion, and the other end of the first link is rotatably connected to the base; one end of the third link is rotatably connected to the seat cushion, and the other end of the third link is rotatably connected to the fourth link; and the screw motor is rotatably connected to the fourth link, and the mounting body is rotatably arranged on the base; The seat cushion has a design position state and a zero gravity position state. When the seat cushion is in the zero gravity position state, the energy storage spring in the spring energy storage mechanism is in a compressed energy storage state; when the lock is unlocked from the locking structure, the elastic potential energy of the energy storage spring drives the motion module to move to a side away from the lock, so that the seat cushion switches to the design position state.

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