Spring energy storage mechanism and seat cushion assembly

Abstract

The utility model relates to the technical field of automobile seats, and discloses a spring energy storage mechanism and a seat cushion assembly, and the spring energy storage mechanism comprises a mounting main body, 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 utility model relates to the technical field of automobile seats, in particular to a spring energy storage mechanism and a seat cushion assembly. Background Art

[0002] Car seats equipped with a zero-gravity mode can effectively alleviate passenger fatigue caused by long-distance car rides. When switched to this mode, the car seat cushion needs to rotate several dozen degrees from its designed position to raise its front end. In the event of a collision, the seat cushion needs to quickly return to its designed position to minimize damage to passengers.

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

[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 utility model to solve the technical problem is to propose a spring energy storage mechanism, comprising:

[0006] An installation body, wherein the installation body is provided with a guide sleeve;

[0007] A lock buckle is movably provided on the mounting body and close to one end of the guide sleeve;

[0008] A motion module and an energy storage spring, wherein the motion module is located at the other end of the guide sleeve and includes a screw motor and an inner sleeve, wherein the inner sleeve is slidably disposed in the guide sleeve and is provided with a nut and a locking structure for the lock catch to be locked, wherein the nut is movably sleeved on the screw of the screw motor to form a screw-nut mechanism; the energy storage spring is disposed between the mounting body and the motion module;

[0009] 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 the side away from the lock buckle.

[0010] 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.

[0011] Furthermore, 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;

[0012] 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.

[0013] Furthermore, 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;

[0014] When the lock buckle is unlocked from the locking structure, the energy storage spring drives the motion module to move a preset distance to the side away from the lock buckle, and the anti-rebound lock tongue is locked into the second lock groove to prevent the inner sliding sleeve from rebounding back.

[0015] Furthermore, the anti-rebound lock tongue is rotatably arranged on the mounting body, and a first return torsion spring is provided between the mounting body and the anti-rebound lock tongue. The force exerted by the first return torsion spring on the anti-rebound lock tongue causes the anti-rebound lock tongue to have a tendency to move in its locking direction.

[0016] Furthermore, the lock catch is rotatably arranged on the mounting body, and a second return torsion spring is provided between the lock catch and the mounting body. The force exerted by the second return torsion spring on the lock catch causes the lock catch to tend to move in its locking direction.

[0017] 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, thereby resetting the inner sleeve and compressing the energy storage spring.

[0018] Furthermore, when the lock buckle is unlocked from the locking structure, the energy storage spring drives the motion module to move a distance greater than or equal to 28 mm to the side away from the lock buckle, and then the anti-rebound lock tongue is locked into the second lock groove.

[0019] 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.

[0020] The technical solution adopted by the present invention to solve the technical problem is to provide a seat cushion assembly, comprising:

[0021] A base and a five-link mechanism, wherein the seat cushion is configured as the second link in the five-link mechanism, and the above-mentioned spring energy storage mechanism is configured as the fifth link in the five-link mechanism;

[0022] The five-link mechanism further includes a first link, a third link, and a fourth link, wherein 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 disposed on the base;

[0023] 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 the side away from the lock, so that the seat cushion switches to the design position state.

[0024] Compared with the prior art, the present invention has at least the following beneficial effects:

[0025] In the present invention, an inner sleeve is slidably disposed within a guide sleeve and is equipped with a nut structure. This nut structure cooperates with the lead screw of the lead screw motor to form a lead screw-nut mechanism. An energy storage spring is disposed between the mounting 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 mounting body. At this time, a lock latch locks onto the locking plate of the inner sleeve, restraining the inner sleeve and ensuring that the inner sleeve is not pushed open by the elastic force of the energy storage spring. When the control lock latch is unlocked from the locking plate on the inner sleeve, the elastic potential energy of the energy storage spring causes the motion module to rapidly move away from the lock latch, being ejected by the energy storage spring, and the spring energy storage mechanism outputs the elastic potential energy. When the spring energy storage mechanism is applied to a car seat, it can quickly reset the car seat from a zero-gravity state to a designed state. This rapid reset of the car seat can be achieved without the use of a large motor, but with a low-power motor, thus reducing the power supply requirements of the entire vehicle. 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. The spring energy storage mechanism does not need to damage any structure during the repeated switching between triggering and energy storage, and the process is reversible and reusable.

[0026] In this utility model, a second locking slot is provided on the inner sleeve, and an anti-rebound locking tongue is movably provided on the end of the mounting body away from the lock catch. When the spring energy storage mechanism is triggered, the motion module moves a certain distance, and the anti-rebound locking tongue automatically locks into the second locking slot, preventing the motion module from rebounding and ensuring structural reliability. When the inner sleeve needs to be reset, the anti-rebound locking tongue is controlled to release from the second locking slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of the spring energy storage mechanism of the utility model;

[0028] Figure 2 for Figure 1 Structural diagram from another perspective;

[0029] Figure 3 It is a plan view of the spring energy storage mechanism in the energy storage state;

[0030] Figure 4 It is a plan view after the spring energy storage mechanism is triggered;

[0031] Figure 5 for Figure 4 Stereoscopic image of

[0032] Figure 6 This is the exploded diagram of the spring energy storage mechanism;

[0033] Figure 7 It is a structural diagram of the installation body;

[0034] Figure 8 for Figure 7 Structural diagram from another perspective;

[0035] Figure 9 Schematic diagram of the structure of the inner sleeve;

[0036] Figure 10 for Figure 9 Structural diagram from another perspective;

[0037] Figure 11 This is a structural diagram of the seat cushion assembly of the utility model;

[0038] Figure 12 It is a simplified structural diagram of the seat cushion assembly when the seat cushion is in the designed position;

[0039] Figure 13 It is a simplified structural diagram of the seat cushion assembly when the seat cushion is in the zero-gravity position.

[0040] In the picture:

[0041] 100. Spring energy storage mechanism; 1. Mounting body; 10. Guide sleeve;

[0042] 2. Locking buckle; 20. Second reset torsion spring; 250. Connecting hole;

[0043] 3. Motion module; 30. Screw motor; 301. Mounting portion; 302. Screw; 31. Inner sleeve; 310. Nut; 311. Locking structure; 311A. First locking groove; 312. Second locking groove;

[0044] 4. Energy storage spring;

[0045] 5. Anti-rebound lock tongue; 50. First reset torsion spring;

[0046] 6. Base;

[0047] 7. Seat cushion; 71. First connecting rod; 73. Third connecting rod; 74. Fourth connecting rod. DETAILED DESCRIPTION

[0048] 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.

[0049] 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 various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0050] In addition, terms such as "first," "second," and "an" in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0051] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0052] 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 this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0053] Example 1:

[0054] like Figures 1-6 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 sleeve 31 and a screw motor 30.

[0055] like Figure 7-Figure 8 Combined with Figure 1-Figure 2 As shown, the mounting body 1 is provided with a guide sleeve 10 fixedly connected to the mounting body 1 and serving as a sliding guide for the inner sliding sleeve 31. The mounting body 1 provides a mounting location for other components. To facilitate manufacturing and processing, the mounting body 1 is formed by a plurality of brackets fixedly connected. The lock catch 2 and the anti-rebound lock tongue 5 are both rotatably mounted on the mounting body 1.

[0056] The lock catch 2 is movably mounted on the mounting body 1, near one end of the guide sleeve 10. The lock catch 2 is used to lock the inner sleeve 31. When the spring energy storage mechanism 100 is in the energy storage state, the lock catch 2 locks onto the locking plate (i.e., the locking structure 311) on the inner sleeve 31, causing the energy storage spring 4 to be in a compressed energy storage state, i.e., the spring energy storage mechanism 100 is in the energy storage state. Specifically, the lock catch 2 is hinged to the mounting body 1 via a hinged shaft and is provided with a connection hole 250 for connecting a cable. When the spring energy storage mechanism 100 needs to be triggered, the cable only needs to be pulled, causing the lock catch 2 to rotate, disengaging the locking head on the lock catch 2 from the locking plate, and instantly releasing the elastic potential energy of the energy storage spring 4. A second return torsion spring 20 is provided between the lock catch 2 and the mounting body 1. The second return torsion spring 20 is sleeved on the hinge shaft, and one torsion arm of the second return torsion spring 20 abuts against the mounting body 1, while the other torsion arm of the second return torsion spring 20 abuts against the lock catch 2. The force exerted by the second return torsion spring 20 on the lock catch 2 causes the lock catch 2 to tend to move in its locking direction. During use, the second return torsion spring 20 ensures that the lock catch 2 can be reliably locked in the first lock slot 311A ​​of the locking plate. When the cable connected to the lock catch 2 is pulled, driving the lock catch 2 out of the first lock slot 311A ​​of the locking plate and unlocking it, the inner sleeve 31 slides open. When the inner sleeve 31 returns to its original position, the elastic force of the second return spring causes the lock catch 2 to automatically lock into the first lock slot 311A ​​of the locking plate.

[0057] like Figure 9-10 Combined with Figures 1-6 As shown, the motion module 3 and the energy storage spring 4 are located at the other end of the guide sleeve 10. The energy storage spring 4 can drive the motion module 3 to extend. The motion module 3 includes a screw motor 30 and an inner sleeve 31. The inner sleeve 31 is slidably disposed in the guide sleeve 10. The guide sleeve 10 has a rectangular through-hole. The outer wall of the inner sleeve 31 is rectangular and matches the rectangular through-hole of the guide sleeve 10. The inner sleeve 31 is also provided with a nut 310 and a locking structure 311 for locking with the lock buckle 2. It can be understood that the nut 310 is fixedly connected to the inner sleeve 31, so that the nut 310 is part of the inner sleeve 31 and is linked to the inner sleeve 31. The locking structure 311 is a locking plate, which is fixedly connected to the inner sleeve 31 at one end near the lock buckle 2. That is, the inner sleeve 31, the locking plate, and the nut 310 are fixed as a whole. The locking plate is provided with a first locking groove 311A, which is a rectangular through-slot. When the locking plate passes through the guide sleeve 10 and extends toward the lock buckle 2, the lock buckle 2 can lock into the first locking groove 311A, locking the locking plate, placing the energy storage spring 4 in a compressed energy storage state and the spring energy storage mechanism 100 in an energy storage state. Among them, the nut 310 is movably sleeved on the screw 302 of the screw motor 30, forming a screw nut mechanism. The screw motor 30 can rotate via the screw 302, driving 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 offset against the installation body 1, and the other end of the energy storage spring 4 is movably offset against the inner sleeve 31. When the energy storage spring 4 quickly releases its 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 lengthened in an instant.

[0058] During actual use, when the buckle 2 is locked to the locking structure 311, i.e., the locking plate, the energy storage spring 4 can be compressed between the mounting body 1 and the motion module 3, thereby entering a compressed state, i.e., a compressed energy storage state. Furthermore, when the 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 it to move away from the buckle 2, instantly pushing the motion module 3 away and causing the overall length of the spring energy storage mechanism 100 to increase instantaneously. When applied to a car seat, this mechanism can rapidly move the seat cushion 7 from its zero-gravity position to its designed position, thereby resetting the seat cushion 7 and minimizing damage to passengers in the event of a collision.

[0059] In this embodiment, the screw motor 30 is provided with a mounting portion 301, and the screw motor 30 can be mounted via the mounting portion 301. For example, the screw motor 30 can be rotatably mounted on the base 6 of the car seat via the mounting portion 301. The screw motor 30 can drive the inner sleeve 31 to move along the screw rod 302, thereby resetting the inner sleeve 31 and compressing the energy storage spring 4. That is, the screw motor 30 drives the inner sleeve 31 to slide, thereby resetting the inner sleeve 31 and the energy storage spring 4, so that the spring energy storage mechanism 100 can be reused. The rotation of the screw rod 302 of the screw motor 30 also causes the spring energy storage mechanism 100 to return to a shorter state, that is, the screw motor 30 will move toward the side close to the lock buckle 2, and the spring energy storage mechanism 100 will return to the energy storage state as a whole.

[0060] During actual use, the inner sleeve 31 of this embodiment is slidably disposed in the guide sleeve 10, and a nut structure is configured 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 disposed 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 catch 2 is locked on the locking plate of the inner sleeve 31, limiting the inner sleeve 31 and ensuring that the inner sleeve 31 is not pushed open by the elastic force of the energy storage spring 4. When the control lock catch 2 is unlocked from the locking 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 catch 2, is bounced open 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, it can quickly reset the car seat from a zero-gravity position to a designed position. This rapid reset can be achieved with a small motor, eliminating the need for a large motor. This reduces the power requirements for the entire vehicle. Furthermore, when the spring energy storage mechanism 100 needs to return to its stored energy state, the screw 302 of the screw motor 30 in the motion module 3 rotates, driving the inner sleeve 31 to compress the energy storage spring 4, thereby quickly resetting the spring energy storage mechanism 100. The spring energy storage mechanism 100 can be repeatedly switched between triggering and storing energy without damaging any structure, making the process reversible and reusable.

[0061] Preferably, in this embodiment, a second locking groove 312 is provided on the inner sleeve 31, and an anti-rebound lock tongue 5 is movably provided on the mounting body 1, 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, the energy storage spring 4 drives the motion module 3 to move a preset distance to the side away from the lock buckle 2, and the anti-rebound lock tongue 5 can be locked into the second locking groove 312 to prevent the inner sleeve 31 from rebounding. Specifically, when the lock buckle 2 is unlocked from the locking structure 311, 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, and the anti-rebound lock tongue 5 is locked into the second locking groove 312, i.e., the spring energy storage mechanism 100 increases in length by 28 mm at an instant.

[0062] Furthermore, the anti-rebound lock tongue 5 is rotatably mounted on the mounting body 1 via a hinged central axis, and a first return torsion spring 50 is provided between the mounting body 1 and the anti-rebound lock tongue 5. The first return torsion spring 50 is sleeved on the hinged central axis, and one torsion arm of the first return torsion spring 50 abuts against the mounting body 1, while the other torsion arm of the first return torsion spring 50 abuts against the anti-rebound lock tongue 5. The force exerted by the first return torsion spring 50 on the anti-rebound lock tongue 5 causes the anti-rebound lock tongue 5 to move in its locking direction. Furthermore, a connection hole 250 for a pull wire connection is provided on the anti-rebound lock tongue 5, and the pull wire can be used to pull the anti-rebound lock tongue 5 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.

[0063] In actual use, this embodiment features a second locking slot 312 on the inner sleeve 31 and a removable anti-rebound latch 5 on the end of the mounting body 1 away from the lock catch 2. When the spring energy storage mechanism 100 is triggered, the motion module 3 moves a certain distance, and the anti-rebound latch 5 automatically locks into the second locking slot 312, preventing the motion module from rebounding and ensuring structural reliability. To reset the inner sleeve 31, the anti-rebound latch 5 is released from the second locking slot 312.

[0064] 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 mounting 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 is to pull the cable on the back side of the lock buckle 2 so that the lock buckle 2 rotates, 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 about 28 mm in the direction away from the lock buckle 2 (such as 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 instantly increases by 28 mm. When the spring energy storage mechanism 100 needs to be reset, the screw motor 30 rotates, causing the inner sleeve 31 to reset and compressing the energy storage spring 4, causing it to return to its compressed energy storage state. During this process, when the inner sleeve 31 does not move telescopically, the screw motor 30 moves toward the inner sleeve 31, causing the screw motor 30 to reset. When it returns to its initial position, i.e., its shortest position, the screw motor 30 is blocked and stops working. The spring energy storage mechanism 100 is compressed another 28 mm and returns to its energy storage state.

[0065] Example 2:

[0066] like Figure 11-13 and combined Figure 3-Figure 6 As shown, a seat cushion assembly of this embodiment mainly includes the following structures:

[0067] 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.

[0068] 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 set on the base 6.

[0069] 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 away from the lock buckle 2, so that the seat cushion 7 switches to the design position state. During this process, the length of the spring energy storage mechanism 100 increases by 28 mm (such as Figure 3 and Figure 4 (L in the middle) The front of the seat cushion 7 drops 15 degrees. In the designed position, the screw motor 30 rotates to reset the spring energy storage mechanism 100, shortening the overall length by 28 mm. When the seat cushion 7 switches to the zero-gravity state, the front of the seat cushion 7 rises 15 degrees.

[0070] In this solution, the spring energy storage mechanism 100 can be used to drive the seat cushion 7 to quickly reset, and this 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 is reusable.

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 is movably provided 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 located at the other end of the guide sleeve and includes a screw motor and an inner sleeve, wherein the inner sleeve is slidably disposed in the guide sleeve and is provided with a nut and a locking structure for the lock catch to be locked, wherein the nut is movably sleeved on the screw of the screw motor to form a screw-nut mechanism; the energy storage spring is disposed 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 the 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: A second locking groove is provided on the inner sliding sleeve, and 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 the side away from the lock buckle, and 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 mounting body, and a first return torsion spring is provided between the mounting body and the anti-rebound lock tongue. The force exerted by the first return torsion spring on the anti-rebound lock tongue causes the anti-rebound lock tongue to have a tendency to move in its locking direction.

6. The spring energy storage mechanism according to claim 1, characterized in that: The lock catch is rotatably arranged on the mounting body, and a second return torsion spring is provided between the lock catch and the mounting body. The force exerted by the second return torsion spring on the lock catch causes the lock catch to 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, thereby resetting the inner sleeve and compressing the energy storage spring.

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 the 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 the fifth link in the five-bar linkage; The five-link mechanism further includes a first link, a third link, and a fourth link, wherein 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 disposed 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 the side away from the lock, so that the seat cushion switches to the design position state.

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