Seat damping device and automobile seat
By designing a seat shock-absorbing device with elastic support components and a connecting rod structure on the seats of light commercial vehicles, the shock absorption problem of light commercial vehicles without air compression devices is solved, a mechanical shock absorption effect is achieved, it is adapted to different models, and driving comfort is improved.
Patent Information
- Application Number
- CN202422942682.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-29
AI Technical Summary
Light commercial vehicles are not equipped with air compression devices, which makes it impossible to install air-suspended mechanical shock-absorbing seats on ordinary light trucks. In addition, the limited space in the cab does not allow for the placement of conventional mechanical shock absorbers. Existing technologies cannot effectively solve the seat shock absorption problem.
A seat shock-absorbing device is designed, comprising a first bracket and a second bracket arranged at intervals, and an elastic support assembly located therebetween. Mechanical shock absorption is achieved by utilizing an articulated structure of an elastic torsion bar and a swing arm. The movement of the brackets is adjusted and stabilized by an adjusting component and a connecting rod assembly. Multifunctional shock absorption is achieved by combining a damping member and a locking assembly.
It achieves effective mechanical shock absorption without an air compression device, is adaptable to different vehicle models, has a simple structure and is easy to mass produce, and improves driving comfort and shock absorption effect.
Smart Images
Figure CN223443374U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of automobile seat, especially to a seat damping device and automobile seat. BACKGROUND
[0002] The electrification of light commercial vehicles has become an industry trend, and currently a large number of new energy light commercial vehicles are not equipped with air compression devices. Since ordinary light truck shock-absorbing seats rely on compressed air provided by the vehicle to drive the air bag spring to achieve shock-absorbing function, they cannot be installed on new energy vehicles that are not equipped with air compression devices.
[0003] Furthermore, due to the small space of the light commercial vehicle cab, light trucks usually cannot be arranged with conventional mechanical shock absorbers commonly used in heavy trucks and tractors. Therefore, a new solution is needed to solve the above technical problems. SUMMARY
[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a seat damping device and an automobile seat to solve the problem that there is no suitable damping device for the seat when the light commercial vehicle is not equipped with an air compression device.
[0005] To achieve the above-mentioned purposes and other related purposes, the utility model provides a seat damping device, which is specifically configured as follows: a first support and a second support are arranged at intervals, and an elastic support assembly is located between the first support and the second support, wherein the first support is used to connect a seat slide rail assembly, and the second support is used to connect a seat cushion and is located above the first support; the elastic support assembly comprises an elastic torsion bar and a first swing arm, two ends of the first swing arm are respectively hinged to a movable end of the elastic torsion bar and the first support, a support part of the elastic torsion bar body is connected to a first side of the second support, the support part and the movable end are both located on the first side of the second support, and a fixed end of the elastic torsion bar is connected to a second side opposite to the first side of the second support.
[0006] Optionally, the movable end and the fixed end are bent in a first direction and a second direction relative to the body, the first direction and the second direction are two different extension directions, so that the movable end and the fixed end are arranged at an included angle.
[0007] Optionally, the elastic support assembly further comprises an adjusting component fixed on the second support, the fixed end of the elastic torsion bar is connected to the adjusting component, and the adjusting component is used to adjust the position of the fixed end of the elastic torsion bar relative to the movable end.
[0008] Optionally, the adjusting component comprises a first driving member, a rotating screw rod connected to a driving end of the first driving member, a screw rod nut connected to the rotating screw rod, and a first limiting member connected to the screw rod nut, the rotating screw rod is rotatably connected to the second support through a bearing support, the fixed end of the elastic torsion rod is fixed through the first limiting member, when the first driving member drives the rotating screw rod to rotate, the movement of the screw rod nut drives the fixed end of the elastic torsion rod to move along the axial direction of the rotating screw rod.
[0009] Optionally, the elastic torsion rod has one or more than one, a plurality of elastic torsion rods are arranged at intervals, the movable end of each elastic torsion rod is hingedly connected to the first swing arm, and the fixed end of each elastic torsion rod is connected to a first limiting member, and the first limiting member is arranged in one-to-one correspondence with the screw rod nut.
[0010] Optionally, the seat damping device further comprises a linkage assembly connected between the first support and the second support, the linkage assembly comprises a second swing arm, a third swing arm, and hingedly connected first and second linkages, the first end of the first linkage is hingedly connected to the first support, and the second end of the first linkage is hingedly connected to the second support through the second swing arm; the first end of the second linkage is hingedly connected to the second support, and the second end of the second linkage is hingedly connected to the first support through the third swing arm.
[0011] Optionally, the first linkage and the second linkage each have two and are arranged at intervals, the first ends of the two first linkages are fixedly connected through a first connecting member, the second ends of the two first linkages are fixedly connected through a second connecting member, the first ends of the two second linkages are fixedly connected through a third connecting member, and the second ends of the two second linkages are fixedly connected through a fourth connecting member.
[0012] Optionally, the second support is provided with a fixed block, the fixed block is fixedly provided with a second limiting member, the support portion of the body of the elastic torsion rod is rotatably connected to the second limiting member, and the first end of the second linkage is hingedly connected to the fixed block.
[0013] Optionally, the seat damping device further comprises a locking assembly, the locking assembly comprises a hook fixedly arranged on the second support, a second driving member connected to the first support, and a lock tongue connected to a driving end of the second driving member, the second driving member drives the lock tongue to rotate and cooperate with the hook to lock the spacing between the first support and the second support.
[0014] Optionally, the seat damping device further comprises a damping member, and the two ends of the damping member are respectively connected to the first support and the second support.
[0015] Optionally, the seat damping device further comprises a first limiting component, the first limiting component comprises a buffer pad connected to the first support and a baffle connected to the second support, the baffle and the buffer pad are correspondingly arranged; and / or, the seat damping device further comprises a second limiting component, the second limiting component comprises an elastic band connected to the second support and a limiting buckle connected to the first support, one end of the elastic band close to the first support is sleeved on the limiting buckle.
[0016] The utility model also provides a car seat, including seat slide rail subassembly, seat back skeleton subassembly, soft package subassembly and above any one of the seat damping device, the seat damping device is connected on the seat slide rail subassembly through first support, the seat back skeleton subassembly is connected on the second support of seat damping device, the soft package subassembly includes seat cushion and back cushion, the seat cushion is connected on the damping device, the back cushion is connected on the seat back skeleton subassembly.
[0017] As described above, the seat damping device and the car seat have the following beneficial effects:
[0018] By arranging the elastic support component between the first support and the second support arranged at intervals, when the second support moves towards the first support, the elastic torsion bar of the elastic support component moves along with the second support, the first swing arm rotates along the direction towards the first support at one end hinged with the elastic torsion bar, so that the elastic torsion bar deforms to generate a restoring force, and then the one end of the first swing arm hinged with the elastic torsion bar rotates along the direction away from the first support under the action of the restoring force, so as to drive the second support to move along with the elastic torsion bar away from the first support, but the second support will move towards the first support again under the action of external pressure, so as to achieve the damping effect, and the structure is simple and convenient for mass production; and by applying the above structure to the car seat, the mechanical damping of the car seat is realized, and the first support and the second support can be matched with various car seats, which is conducive to market promotion. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 A structure schematic view of the seat damping device according to an embodiment of the utility model is shown;
[0020] Figure 2 A structure schematic view of the elastic torsion bar according to an embodiment of the utility model is shown;
[0021] Figure 3 A structure schematic view of the elastic support component and the connecting rod component according to an embodiment of the utility model is shown;
[0022] Figure 4 A structure schematic view of the seat damping device according to an embodiment of the utility model is shown; Figure 3A partial structural schematic view of the seat damping device according to an embodiment of the present application is shown in the figure;
[0023] Figure 5 A partial structural schematic view of the seat damping device according to an embodiment of the present application is shown in the figure;
[0024] Figure 6 A partial structural schematic view of the seat damping device according to an embodiment of the present application is shown in the figure.
[0025] Legend of reference signs
[0026] 1 - first support; 11 - second driving member; 12 - locking tongue; 13 - second elastic member; 14 - buffer pad; 15 - limiting buckle;
[0027] 2 - second support; 21 - fixed block; 22 - second limiting member; 23 - hook; 24 - baffle; 25 - elastic band;
[0028] 3 - elastic support assembly; 31 - elastic torsion bar; 311 - movable end; 312 - body; 313 - fixed end; 32 - first swing arm; 33 - adjusting component; 331 - first driving member; 332 - rotating screw rod; 333 - screw rod nut; 334 - first limiting member; 335 - first elastic member; 336 - fixed hook;
[0029] 4 - damping member;
[0030] 5 - connecting rod assembly; 51 - second swing arm; 52 - third swing arm; 53 - first connecting rod; 54 - second connecting rod; 55 - first connecting member; 56 - second connecting member; 57 - third connecting member; 58 - fourth connecting member;
[0031] 6 - seat slide rail assembly;
[0032] 7 - seat backrest framework assembly. DETAILED DESCRIPTION
[0033] The above embodiments of the present application have been described through specific concrete examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the present specification. The present application can also be implemented or applied through other different specific embodiments, and each detail in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present application.
[0034] It should be noted that the diagrams provided in the present embodiment are only for the purpose of illustrating the basic concept of the present invention. Therefore, the diagrams only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. The form, quantity and proportion of each component can be changed at will during actual implementation, and the component layout form may also be more complex. The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read. They are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they have no technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the effect and purpose of the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be considered as the scope of the implementation of the present invention without substantially changing the technical content.
[0035] like Figure 1 and Figure 2 As shown, some embodiments of the present application provide a seat shock absorbing device, comprising a first bracket 1 and a second bracket 2 spaced apart from each other, and an elastic support assembly 3 located between the first bracket 1 and the second bracket 2, wherein the first bracket 1 is used to connect to a seat slide rail assembly (not shown), and the second bracket 2 is used to connect to a seat cushion (not shown) and is located above the first bracket 1. The elastic support assembly 3 comprises an elastic torsion bar 31 and a first swing arm 32, the two ends of the first swing arm 32 are hinged to the movable end 311 of the elastic torsion bar 31 and the first bracket 1, respectively, the support portion of the main body 312 of the elastic torsion bar 31 is connected to the first side of the second bracket 2, and the support portion and the movable end 311 are both located on the first side of the second bracket 2; the fixed end 313 of the elastic torsion bar 31 is connected to the second side of the second bracket 2 opposite to the first side, so that the elastic torsion bar 31 and the second bracket 2 can move synchronously.
[0036] When the second support 2 is moved towards the first support 1 by external pressure, the elastic torsion bar 31 is synchronously moved with the second support 2 under the pressure of the second support 2, so that the first swing arm 32 rotates in the direction towards the first support 1 under the gravity of itself and the elastic torsion bar 31. In this process, the elastic torsion bar 31 is deformed and generates a restoring force, and the elastic torsion bar 31 returns to the initial state under the action of the restoring force, the end of the first swing arm 32 connected with the elastic torsion bar 31 synchronously moves with the elastic torsion bar 31 and rotates in the direction away from the first support 1, and the second support 2 is also moved away from the first support 1 under the driving of the elastic torsion bar 31. Subsequently, the second support 2 is again moved towards the first support 1 under the action of external pressure. Under the action of the elastic support assembly 3, the second support 2 repeatedly moves towards or away from the first support 1, thereby realizing the mechanical damping effect of the seat damping device of the application. The seat damping device of the application has a simple structure and is convenient for mass production.
[0037] As shown in Figure 2 In some embodiments, the active end 311 and the fixed end 313 of the elastic torsion bar 31 are bent in the first direction and the second direction relative to the body 312 of the elastic torsion bar 31, the first direction and the second direction extend in different opposite directions, so that the active end 311 and the fixed end 313 of the elastic torsion bar 31 are arranged at an angle, and the restoring force can be generated when the active end 311 is deformed.
[0038] For example, the first direction can be the direction towards the middle of the second support 2, and the second direction can be the direction perpendicular to the second support 2 and away from the first support 1.
[0039] It should be noted that when the second support 2 is not subjected to external pressure, the second support 2 is supported by the pre-tightening force of the elastic torsion bar 31, so that a certain distance is maintained between the first support 1 and the second support 2.
[0040] In some embodiments, the elastic support assembly 3 further comprises an adjusting component 33 fixedly installed on the second support 2, and the fixed end 313 of the elastic torsion bar 31 is connected with the adjusting component 33. The adjusting component 33 is used to adjust the position of the fixed end 313 relative to the active end 311 of the elastic torsion bar 31, so as to adjust the initial torsion angle of the elastic torsion bar 31, so that the seat damping device of the application is applied to the automobile seat and adapted to different weight drivers.
[0041] In some embodiments, the adjusting component 33 comprises a first driving member 331, a rotating screw rod 332, a screw nut 333, and a first limiting member 334. The rotating screw rod 332 is connected to the driving end of the first driving member 331. The screw nut 333 is connected to the rotating screw rod 332. The first limiting member 334 is connected to the screw nut 333 to move synchronously with the screw nut. The rotating screw rod 332 is rotatably connected to the second support 2 through a bearing support. The fixed end 313 of the elastic torsion bar 31 is fixed through the first limiting member 334. When the first driving member 331 drives the rotating screw rod 332 to rotate, the movement of the screw nut 333 drives the fixed end 313 of the elastic torsion bar 31 to move along the axial direction of the rotating screw rod 332, so as to change the initial torsion angle of the elastic torsion bar 31.
[0042] For example, the first driving member 331 includes, but is not limited to, a motor, a rotating wheel, etc.
[0043] In an application example, the adjusting component 33 further comprises a first elastic member 335 and a fixed hook 336. The two ends of the first elastic member 335 are respectively connected to the fixed hook 336 and the first limiting member 334. The fixed hook 336 is fixedly installed on the second support 2. The first elastic member 335 applies a pre-tightening force to the first limiting member 334, which is beneficial to avoid loosening between the rotating screw rod 332 and the screw nut 333 after the interval adjustment of the elastic torsion bar 31 is completed, so as to avoid displacement of the first limiting member 334 and the fixed end 313 of the elastic torsion bar 31.
[0044] For example, the first elastic member 335 includes, but is not limited to, a spring, an elastic connecting member, etc.
[0045] In some embodiments, the elastic torsion bar 31 is provided with one elastic torsion bar 31 located at the middle of the second support 2.
[0046] In other embodiments, the elastic torsion bar 31 is provided with two or more elastic torsion bars 31. The number of the elastic torsion bars 31 is set according to actual needs. For example, the number of the elastic torsion bars 31 can be two, three, four, etc. The plurality of elastic torsion bars 31 are arranged at intervals. The movable end 311 of each elastic torsion bar 31 is hingedly connected to a first swing arm 32. The fixed end 313 of each elastic torsion bar 31 is connected to a first limiting member 334. The first limiting member 334 and the screw nut 333 are arranged one by one.
[0047] As shown in FIG. 1, Figure 3 In the present embodiment, the elastic torsion bar 31 is provided with two elastic torsion bars 31 located at the two sides of the second support 2.
[0048] In some embodiments, in order to improve the perception experience of the driver and the passenger during the shock absorption of the seat shock absorption device, a damping member 4 is connected between the first support 1 and the second support 2.
[0049] Exemplarily, the damping member 4 includes but is not limited to a damper or the like.
[0050] As shown in Figure 3 and Figure 4 In some embodiments, in order to limit the moving direction of the second support 2, a linkage assembly 5 is further arranged between the first support 1 and the second support 2. The linkage assembly 5 includes a second swing arm 51, a third swing arm 52, and a first linkage 53 and a second linkage 54 which are hinged. The first end of the first linkage 53 is hinged with the first support 1, the second end of the first linkage 53 is hinged with the second swing arm 51, and the second swing arm 51 is further hinged with the second support 2. The first end of the second linkage 54 is hinged with the second support 2, the second end of the second linkage 54 is hinged with the third swing arm 52, and the third swing arm 52 is further hinged with the first support 1. The linkage assembly 5 and the second support 2 constitute five kinematic pairs and seven lower pairs, so that the linkage assembly 5 and the second support 2 have only one degree of freedom, thereby ensuring that the second support 2 can only move vertically towards or away from the first support 1.
[0051] In some embodiments, the first linkage 53 and the second linkage 54 are arranged on both sides of the second support 2. The first ends of the two first linkages 53 are fixedly connected by a first connecting piece 55, and the second ends of the two first linkages 53 are fixedly connected by a second connecting piece 56. The first ends of the two second linkages 54 are fixedly connected by a third connecting piece 57, and the second ends of the two second linkages 54 are fixedly connected by a fourth connecting piece 58. The above structure makes the two sides of the second support 2 move synchronously during movement, which is beneficial to ensure the stability of the movement of the second support 2.
[0052] In an application example, when the elastic torsion bar 31 is provided with one, the linkage assembly 5 is located on both sides of the elastic torsion bar 31. When the elastic torsion bar 31 is provided with two or more, the linkage assembly 5 is located between adjacent two elastic torsion bars 31.
[0053] In some embodiments, the second support 2 is provided with a fixed block 21, the fixed block 21 is fixedly provided with a second limiting piece 22, and the supporting portion of the body 312 of the elastic torsion bar 31 is rotationally connected with the second limiting piece 22, so as to limit the position of the body 312 of the elastic torsion bar 31. The first end of the second linkage 54 is hinged with the fixed block 21, so that the elastic torsion bar 31 is connected with the linkage assembly 5, so that the linkage assembly 5 can move synchronously with the elastic torsion bar 31.
[0054] As shown in Figure 5As shown, in some embodiments, the seat damping device of the present application further comprises a locking assembly for the passenger who does not need the damping function. The locking assembly comprises a hook 23, a second driving member 11 and a locking tongue 12. The hook 23 is fixedly connected to the second support 2, the second driving member 11 is connected to the first support 1, and the locking tongue 12 is connected to the driving end of the second driving member 11. When the second driving member 11 drives the locking tongue 12 to rotate and cooperate with the hook 23, the distance between the first support 1 and the second support 2 is locked, and the second support 2 is prevented from moving closer to or farther away from the first support 1, so that the damping effect of the elastic support assembly 3 is eliminated.
[0055] For example, the second driving member 11 includes but is not limited to a motor, a hand wheel, etc. When the second driving member 11 is a hand wheel, the output end of the hand wheel can rotate relative to the first support 1.
[0056] In an application example, the locking assembly further comprises a second elastic member 13, and the two ends of the second elastic member 13 are respectively connected to the locking tongue 12 and the first support 1, so that the locking tongue 12 provides a pre-tightening force when the locking tongue 12 cooperates with the hook 23.
[0057] For example, the second elastic member 13 includes but is not limited to a spring, an elastic connecting member, etc.
[0058] In some embodiments, in order to limit the movement of the second support 2 towards or away from the first support 1, the seat damping device of the present application further comprises a first limiting assembly and a second limiting assembly. The first limiting assembly is used to limit the first distance of the second support 2 from the first support 1, and the second limiting assembly is used to limit the second distance of the second support 2 from the first support 1.
[0059] In some embodiments, the first limiting assembly comprises a buffer pad 14 and a baffle 24, the buffer pad 14 is connected to the first support 1, the baffle 24 is connected to the second support 2, and the baffle 24 and the buffer pad 14 are correspondingly arranged. When the second support 2 moves closer to the first support 1 under the action of external pressure, the second support 2 can move under the joint action of the buffer pad 14 and the baffle 24, so that the minimum distance of the second support 2 from the first support 1 is the first distance, which is beneficial to avoid the deformation of the elastic torsion bar 31 to failure.
[0060] In some embodiments, the second limiting assembly comprises an elastic band 25 and a limiting buckle 15, the limiting buckle 15 is connected to the first support 1, and the elastic band 25 is connected to the second support 2. One end of the elastic band 25 close to the first support 1 is sleeved on the limiting buckle 15. When the second support 2 moves away from the first support 1 under the action of the elastic torsion bar 31, the second support 2 can move under the joint action of the elastic band 25 and the limiting buckle 15, so that the maximum distance of the second support 2 from the first support 1 is the second distance, which is beneficial to improve the perceptual experience of the passenger.
[0061] As Figure 6 shown, some embodiments of the present application also provide a car seat, comprising a seat slide rail assembly 6, a seat back frame assembly 7, a soft package assembly, and the above-mentioned seat damping device. Wherein the damping device is connected to the seat slide rail assembly 6 through the first support 1, and the seat back frame assembly 7 is connected to the second support 2 of the seat damping device. The soft package assembly includes a seat cushion and a backrest, wherein the seat cushion is connected to the damping device, and the backrest is connected to the seat back frame assembly 7. Since the seat damping device has a small volume, it can be put into the limited space of the cab, providing damping function for the driver, and is conducive to improving the driving experience and riding comfort of the driver.
[0062] The above-mentioned embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.
Claims
1. A seat shock absorbing device, characterized in that: include a first bracket, for connecting to the seat rail assembly; a second bracket, used for connecting to the seat cushion, the second bracket being spaced apart from the first bracket and located above the first bracket; An elastic support assembly is located between the first bracket and the second bracket, and includes an elastic torsion bar and a first swing arm. The two ends of the first swing arm are respectively hinged to the movable end of the elastic torsion bar and the first bracket. The support portion on the elastic torsion bar body is connected to the first side of the second bracket. The support portion and the movable end are both located on the first side of the second bracket. The fixed end of the elastic torsion bar is connected to the second side opposite to the first side of the second bracket.
2. The seat shock absorbing device according to claim 1, characterized in that: The movable end and the fixed end are bent relative to the body along a first direction and a second direction, and the first direction and the second direction are two different extending directions, so that the movable end and the fixed end are arranged at an angle.
3. The seat shock absorbing device according to claim 1, characterized in that: The elastic support assembly further includes an adjusting component fixed on the second bracket, the fixed end of the elastic torsion bar is connected to the adjusting component, and the adjusting component is used to adjust the position of the fixed end of the elastic torsion bar relative to the movable end.
4. The seat shock absorbing device according to claim 3, characterized in that: The adjusting component includes a first driving member, a rotating screw connected to a driving end of the first driving member, a screw nut connected to the rotating screw, and a first limiting member connected to the screw nut, the rotating screw is rotatably connected to the second bracket via a bearing bracket, the fixed end of the elastic torsion bar is fixed by the first limiting member, and when the first driving member drives the rotating screw to rotate, the movement of the screw nut drives the fixed end of the elastic torsion bar to move along the axial direction of the rotating screw; And / or, there is more than one elastic torsion rod, and the multiple elastic torsion rods are arranged at intervals, the movable end of each elastic torsion rod is hinged to the first swing arm, and the fixed end of each elastic torsion rod is connected to a first limiting member, and the first limiting member is arranged in a one-to-one correspondence with the screw nut.
5. The seat shock absorbing device according to claim 1, characterized in that: The seat shock-absorbing device also includes a connecting rod assembly connected between the first bracket and the second bracket, and the connecting rod assembly includes a second swing arm, a third swing arm, and a hinged first link and second link, the first end of the first link is hinged to the first bracket, and the second end of the first link is hinged to the second bracket through the second swing arm; the first end of the second link is hinged to the second bracket, and the second end of the second link is hinged to the first bracket through the third swing arm.
6. The seat shock absorbing device according to claim 5, characterized in that: The first connecting rod and the second connecting rod each have two and are spaced apart from each other, the first ends of the two first connecting rods are fixedly connected by a first connecting member, and the second ends of the two first connecting rods are fixedly connected by a second connecting member; the first ends of the two second connecting rods are fixedly connected by a third connecting member, and the second ends of the two second connecting rods are fixedly connected by a fourth connecting member; And / or, a fixing block is provided on the second bracket, a second limiting piece is fixed on the fixing block, the supporting portion of the body of the elastic torsion bar is rotatably connected to the second limiting piece, and the first end of the second connecting rod is hinged to the fixing block.
7. The seat shock absorbing device according to claim 1, characterized in that: The seat shock-absorbing device also includes a locking assembly, which includes a hook fixed on the second bracket, a second driving member connected to the first bracket, and a locking tongue connected to the driving end of the second driving member. The second driving member drives the locking tongue to rotate and cooperate with the hook to lock the distance between the first bracket and the second bracket.
8. The seat shock absorbing device according to any one of claims 1 to 7, characterized in that: The seat shock absorbing device further includes a damping member, and two ends of the damping member are respectively connected to the first bracket and the second bracket.
9. The seat shock absorbing device according to any one of claims 1 to 7, characterized in that: The seat shock absorbing device further includes a first limiting assembly, the first limiting assembly including a buffer pad connected to the first bracket and a baffle connected to the second bracket, the baffle and the buffer pad being arranged correspondingly; And / or, the seat shock absorbing device also includes a second limiting component, the second limiting component includes an elastic band connected to the second bracket, and a limiting buckle connected to the first bracket, and the end of the elastic band close to the first bracket is mounted on the limiting buckle.
10. A car seat, characterized in that: include: seat rail assembly; The seat vibration reduction device according to any one of claims 1 to 9, wherein the seat vibration reduction device is connected to the seat slide rail assembly via a first bracket; a seat back frame assembly connected to the second bracket of the seat shock absorbing device; The soft bag component comprises a seat cushion and a back cushion, wherein the seat cushion is connected to the vibration reduction device, and the back cushion is connected to the seat back frame component.