A multi-chambered shock absorber and shock absorbing seating system

Abstract

The utility model discloses a kind of multi-chamber shock absorber and shock absorbing seat system.The multi-chamber shock absorber includes piston rod assembly, cylinder, guide sealing assembly, bottom valve assembly and free piston assembly, guide sealing assembly is fixedly arranged at the first end of cylinder, free piston assembly is movably arranged in cylinder and close to the second end of cylinder, bottom valve assembly is arranged in cylinder and between damping assembly and free piston assembly.Wherein, first chamber is formed between guide sealing assembly and damping assembly, second chamber is formed between damping assembly and bottom valve assembly, third chamber is formed between bottom valve assembly and free piston assembly.Damping assembly is provided with first oil passage to allow hydraulic oil to circulate between first chamber and second chamber, bottom valve assembly is provided with second oil passage to allow hydraulic oil to circulate between second chamber and third chamber.The multi-chamber shock absorber provided in the present application has low working noise, is easy to install and has good damping performance.

Description

Technical Field

[0001] This application relates to the field of vibration reduction technology, and in particular to a multi-chamber vibration damper and a vibration-damping seat system. Background Technology

[0002] A seat shock absorber is a component applied to a seat to absorb impacts and dampen vibrations through its damping characteristics. Its performance directly affects the stability and ride comfort of the seat. Currently, common monotube seat shock absorbers mainly fall into two categories: oil-gas mixed type and oil-gas separated type.

[0003] Hydraulic-gas hybrid shock absorbers combine hydraulic oil and high-pressure gas in the same working chamber. During operation, the hydraulic oil passes through a damping system to generate damping force, thus reducing vibration. However, because the hydraulic oil and high-pressure gas are mixed, the product generates mixed oil-gas noise during operation, affecting the user experience. Furthermore, these products require specific installation orientation; if installed backwards, the seat will not have any damping effect. Additionally, the damping force of these products is relatively small and cannot meet the demands of high-damping vibration reduction.

[0004] Oil-gas separation type shock absorbers separate hydraulic oil and high-pressure gas into different working chambers. During operation, the hydraulic oil passes through a damping system to generate damping force, thus reducing vibration and preventing oil-gas mixing noise during product movement. However, this type of product requires a certain amount of high-pressure gas to allow the piston rod to eject after being pressed in, but the introduction of high-pressure gas makes the manufacturing and installation process relatively difficult. This type of product also has certain requirements for installation space, which imposes limitations on the seat frame design. Furthermore, this type of product also suffers from relatively low damping force, failing to meet the demands of high-damping vibration reduction.

[0005] Therefore, it is necessary to propose a technical solution to overcome the shortcomings of existing technologies. Utility Model Content

[0006] This application provides a multi-chamber vibration damper and a vibration damping seat system, which aims to achieve low noise, convenient installation, and good vibration damping performance.

[0007] This application is achieved through the following technical solution: a multi-chamber vibration damper, comprising a piston rod assembly and a cylinder, the cylinder including a first end with an opening and a second end with a closed end cap, the piston rod assembly including a damping assembly and a piston rod, the damping assembly being located inside the cylinder, the piston rod connecting to the damping assembly and extending out of the cylinder from the opening, the multi-chamber vibration damper further including a guide sealing assembly, a bottom valve assembly, and a free piston assembly, the guide sealing assembly being fixedly disposed at the first end of the cylinder, the free piston assembly being disposed inside the cylinder and close to... Near the second end of the cylinder, the bottom valve assembly is disposed within the cylinder and located between the damping assembly and the free piston assembly. A first chamber is formed between the guide sealing assembly and the damping assembly, a second chamber is formed between the damping assembly and the bottom valve assembly, and a third chamber is formed between the bottom valve assembly and the free piston assembly. The damping assembly is provided with a first oil passage to allow hydraulic oil to flow between the first and second chambers, and the bottom valve assembly is provided with a second oil passage to allow hydraulic oil to flow between the second and third chambers.

[0008] As a further improved technical solution, the bottom valve assembly includes a valve body, the valve body is provided with a valve sealing ring in circumferential direction that seals against the inner wall of the cylinder, and the valve body is provided with an overflow hole.

[0009] As a further improved technical solution, the bottom valve assembly includes a valve disc and a fixing member that connects and fixes the valve disc and the valve body.

[0010] As a further improved technical solution, the valve disc is provided with a through hole or a flow groove, and the through hole or flow groove is connected to the flow hole on the valve body.

[0011] As a further improved technical solution, an annular connecting groove is provided between the valve body and the valve disc, and the flow passage is connected to the through hole or flow groove through the annular connecting groove. The flow passage, the annular connecting groove and the through hole or flow groove constitute the second oil passage.

[0012] As a further improved technical solution, the cylinder barrel has a fixing part, and the bottom valve assembly is connected and fixed to the cylinder barrel through the fixing part.

[0013] As a further improved technical solution, the multi-chamber vibration damper includes an elastic device disposed between the free piston assembly and the closed end cap. The elastic device elastically abuts against the free piston assembly in a direction close to the piston rod assembly. The free piston assembly is in sealing contact with the inner wall surface of the cylinder to isolate the third chamber and the elastic device.

[0014] As a further improved technical solution, the elastic device includes a spring.

[0015] As a further improved technical solution, the damping assembly includes a piston body and metal plates disposed at opposite ends of the piston body, the first oil passage passes through opposite ends of the piston body, and the two ports of the first oil passage are covered by the metal plates.

[0016] This application also achieves this through the following technical solution: a vibration damping seat system, the vibration damping seat system including a mounting base, a seat frame and at least one multi-chamber vibration damper as described above, one end of the multi-chamber vibration damper being connected to the mounting base and the other end being connected to the seat frame, so as to achieve buffering and vibration damping between the seat frame and the mounting base.

[0017] This application provides a multi-chamber vibration damper including a guide sealing assembly, a bottom valve assembly, and a free piston assembly. A first chamber is formed between the guide sealing assembly and the damping assembly, a second chamber is formed between the damping assembly and the bottom valve assembly, and a third chamber is formed between the bottom valve assembly and the free piston assembly. The damping assembly is provided with a first oil passage to allow hydraulic oil to flow between the first and second chambers, and the bottom valve assembly is provided with a second oil passage to allow hydraulic oil to flow between the second and third chambers. The guide sealing assembly, bottom valve assembly, and free piston assembly form a three-chamber structure. With the oil flow design of the first and second oil passages, high-pressure gas is not required, there is no oil-gas mixing noise, the installation space requirement is low, and installation is convenient. Moreover, the formation of two oil passages can meet the high-damping vibration reduction requirements and improve the vibration reduction performance. Attached Figure Description

[0018] Figure 1 This is a side view of an embodiment of the multi-chamber vibration damper of this application.

[0019] Figure 2 This is a cross-sectional schematic diagram of an embodiment of the multi-chamber vibration damper of this application.

[0020] Figure 3 This is a perspective view of the bottom valve assembly in one embodiment of the multi-chamber vibration damper of this application.

[0021] Figure 4 It is along Figure 3 Schematic diagram of the cross section along line AA.

[0022] Figure 5 This is a cross-sectional schematic diagram of the damping component in one embodiment of the multi-chamber vibration damper of this application.

[0023] The reference numerals in the attached figures are as follows: 100, multi-chamber vibration damper; 1, piston rod assembly; 11, piston rod; 111, connecting ring; 12, damping assembly; 121, piston body; 122, metal sheet; 123, piston seal ring; 124, first oil passage; 13, fixing nut; 2, cylinder; 201, first chamber; 202, second chamber; 203, third chamber; 21, first end; 211, opening; 22, second end; 221, closed end cap; 3, guide sealing assembly; 4, free piston assembly; 41, free piston body; 411, isolation seal ring; 42, elastic device; 5, bottom valve assembly; 51, valve body; 510, flow hole; 511, valve seal ring; 512, annular connecting groove; 52, valve disc; 520, through hole; 53, fixing component. Detailed Implementation

[0024] To provide a clearer understanding of the technical features, objectives, and effects of this application, the specific embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0025] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0026] Please see Figures 1 to 5As shown, this application provides a multi-chamber vibration damper 100, which includes a piston rod assembly 1, a cylinder 2, a guide sealing assembly 3, a bottom valve assembly 5, and a free piston assembly 4. The cylinder 2 includes a first end 21 with an opening 211 and a second end 22 with a closed end cap 221. The piston rod assembly 1 includes a damping assembly 12 and a piston rod 11. The damping assembly 12 is located inside the cylinder 2, and the piston rod 11 connects to the damping assembly 12 and extends out of the cylinder 2 from the opening 211. The guide sealing assembly 3 is fixedly disposed at the first end 21 of the cylinder 2. The free piston assembly 4 is movably disposed inside the cylinder 2 and near the second end 22 of the cylinder 2. The bottom valve assembly 5 is disposed inside the cylinder 2 and located between the damping assembly 12 and the free piston assembly 4. The guide sealing assembly 3 and the damping assembly 12 form a first chamber 201, the damping assembly 12 and the bottom valve assembly 5 form a second chamber 202, and the bottom valve assembly 5 and the free piston assembly 4 form a third chamber 203. The damping assembly 12 is provided with a first oil passage 124 to allow hydraulic oil to flow between the first chamber 201 and the second chamber 202, and the bottom valve assembly 5 is provided with a second oil passage to allow hydraulic oil to flow between the second chamber 202 and the third chamber 203.

[0027] This application provides a multi-chamber vibration damper 100, including a guide sealing assembly 3, a bottom valve assembly 5, and a free piston assembly 4. A first chamber 201 is formed between the guide sealing assembly 3 and the damping assembly 12, a second chamber 202 is formed between the damping assembly 12 and the bottom valve assembly 5, and a third chamber 203 is formed between the bottom valve assembly 5 and the free piston assembly 4. The damping assembly 12 is provided with a first oil passage 124 to allow hydraulic oil to flow between the first chamber 201 and the second chamber 202. The bottom valve assembly 5 is provided with a second oil passage to allow hydraulic oil to flow between the second chamber 202 and the third chamber 203. The guide sealing assembly 3, the bottom valve assembly 5, and the free piston assembly 4 form a three-chamber structure. With the oil flow design of the first oil passage 124 and the second oil passage, high-pressure gas is not required, there is no oil-gas mixing noise, the installation space requirement is low, and the installation is convenient. Moreover, the formation of two oil passages can meet the high-damping vibration reduction requirements and improve the vibration reduction performance.

[0028] Please see Figure 1 and Figure 2As shown, the cylinder 2 serves as the housing of the shock absorber, providing installation space for various components. The cylinder 2 has a first end 21 and a second end 22. The first end 21 has an opening 211, and the second end 22 has a closed end cap 221. The opening 211 of the first end 21 is used for the extension of the piston rod 11, and the closed end cap 221 of the second end 22 is provided with a connecting structure for connection to external components. The connecting structure can specifically be a lifting ring, a threaded column, a threaded cylinder, etc., and this application does not limit this. In this embodiment, the cylinder 2 is a steel pipe, and the inner wall surface of the cylinder 2 needs to maintain a certain smoothness to reduce frictional resistance during the movement of each component, while ensuring the sealing effect with each sealing component to prevent hydraulic oil leakage.

[0029] Please see Figure 2 and Figure 5 As shown, the piston rod assembly 1 includes a damping assembly 12 and a piston rod 11. The damping assembly 12 is located inside the cylinder 2, and the piston rod 11 is connected to the damping assembly 12 and extends out of the cylinder 2 from the opening 211 at the first end 21. One end of the piston rod 11 in the piston rod assembly 1 extends out of the cylinder 2 for connection with other components, and the other end is connected to the damping assembly 12. In this embodiment, a connecting ring 111 is provided at the end of the piston rod 11 outside the cylinder 2 for connection with other components; in other embodiments, the connecting ring 111 can also be replaced by a threaded column, threaded cylinder, or other connecting structure.

[0030] In this embodiment, the damping assembly 12 is fixed to one end of the piston rod 11 by a fixing nut 13. This end of the piston rod 11 forms a stepped shaft, and the damping assembly 12 is sleeved on the stepped shaft of the piston rod 11 and fixedly connected to this end by the fixing nut 13 to prevent the damping assembly 12 from falling off along the axial direction of the piston rod 11. In this embodiment, the damping assembly 12 includes a piston body 121 and metal plates 122 disposed at opposite ends of the piston body 121. A first oil passage 124 passes through opposite ends of the piston body 121, and both ends of the first oil passage 124 are covered by the metal plates 122. A piston sealing ring 123 is disposed circumferentially on the piston body 121, and the piston sealing ring 123 contacts the inner wall surface of the cylinder 2, so that the two sides of the damping assembly 12 form a first chamber 201 and a second chamber 202 that can only be connected through the first oil passage 124. When the multi-chamber vibration damper 100 is working, the piston rod 11 drives the damping assembly 12 to move within the cylinder 2. Hydraulic oil flows between the first chamber 201 and the second chamber 202 through the first oil passage 124. Since the metal plate 122 covers both ends of the first oil passage 124, when the hydraulic oil flows through it, it exerts a force on the metal plate 122, causing the metal plate 122 to undergo a certain degree of elastic deformation. This adjusts the flow area of ​​the first oil passage 124, thereby affecting the flow speed and resistance of the hydraulic oil between the first chamber 201 and the second chamber 202, generating damping force to achieve vibration reduction.

[0031] In this embodiment, the guide sealing assembly 3 is fixedly disposed at the first end 21 of the cylinder 2. Its main function is to guide the piston rod 11 and ensure the sealing between the opening 211 of the first end 21 of the cylinder 2 and the piston rod 11, preventing hydraulic oil leakage. Specifically, the guide sealing assembly 3 is fixed inside the cylinder 2 and disposed close to the first end 21. The guide sealing assembly 3 includes components such as a guide sleeve and a sealing ring. The guide sleeve guides the piston rod 11, ensuring that the piston rod 11 maintains linear movement during movement and avoiding skew that could cause interference with other components or increase frictional resistance. The sealing ring is disposed between the guide sleeve and the piston rod 11, and between the guide sleeve and the cylinder 2, to seal and prevent hydraulic oil from leaking out from the first end 21 of the cylinder 2. Good guiding and sealing performance is the foundation for ensuring the normal operation of the shock absorber and can improve the reliability and service life of the shock absorber.

[0032] In this embodiment, the free piston assembly 4 is movably disposed within the cylinder 2 and near the second end 22 of the cylinder 2, and it is capable of axial movement within the cylinder 2. The free piston assembly 4 includes a free piston body 41, and a circumferentially disposed isolation sealing ring 411 is provided on the free piston body 41. The isolation sealing ring 411 is in sealing contact with the inner wall surface of the cylinder 2 to separate the third chamber 203 and the elastic device 42 into two non-communicating chambers. The elastic device 42 is disposed between the free piston body 41 and the closed end cap 221 to elastically abut against the free piston assembly 4 in a direction closer to the piston rod assembly 1. In this embodiment, the elastic device 42 includes a spring; in some other embodiments, it may also include other elastic elements. When the multi-chamber damper 100 is subjected to an external force, the piston rod 11 drives the damping assembly 12 to move, causing changes in the hydraulic oil pressure in each chamber. Under the combined action of the hydraulic oil pressure and the elastic force of the elastic device 42, the free piston assembly 4 will move within the cylinder 2. For example, when the piston rod 11 is subjected to inward pressure, the hydraulic oil pressure in the second chamber 202 and the third chamber 203 increases, pushing the free piston assembly 4 to move towards the second end 22, causing the compression elastic device 42 to undergo elastic deformation. When the pressure on the piston rod 11 disappears or it is stretched outward, the elastic restoring force of the elastic device 42 pushes the free piston assembly 4 to move towards the first end 21, providing some assistance to ensure that the oil returns to its original position in a timely manner, avoiding empty strokes in the stretching direction, and restoring the hydraulic oil pressure in each chamber to a balance. This motion characteristic of the free piston assembly 4 can further adjust the pressure distribution inside the shock absorber and enhance the damping effect.

[0033] Please refer to this carefully. Figures 2 to 4As shown, the bottom valve assembly 5 is disposed within the cylinder 2 and located between the damping assembly 12 and the free piston assembly 4. The cylinder 2 has a fixing portion, through which the bottom valve assembly 5 is connected and fixed to the cylinder 2. The fixing portion can be a structure such as a raised ring, raised dot, concave ring, or concave dot formed by metal processing techniques such as rolling, stamping, welding, or machining, to cooperate with corresponding concave or raised structures on the bottom valve assembly 5 to achieve relative fixation. In this embodiment, the bottom valve assembly 5 includes a valve body 51, a valve disc 52, and a fixing member 53 that connects and fixes the valve disc 52 and the valve body 51.

[0034] In this embodiment, a valve sealing ring 511 is circumferentially provided on the valve body 51 to seal against the inner wall of the cylinder 2, effectively separating the second chamber 202 and the third chamber 203 and preventing hydraulic oil leakage in non-oil passages. Flow holes 510 are provided on the valve body 51, forming part of the second oil passage for hydraulic oil to flow between the second chamber 202 and the third chamber 203. A through hole 520 is provided on the valve disc 52, communicating with the flow holes 510 on the valve body 51. Specifically, an annular connecting groove 512 is provided between the valve body 51 and the valve disc 52, and the flow holes 510 communicate with the through holes 520 through the annular connecting groove 512. The flow holes 510, the annular connecting groove 512, and the through holes 520 together constitute the second oil passage. In other embodiments, the through hole 520 can be replaced by a flow groove. In this embodiment, the first chamber 201 and the second chamber 202 are working chambers, where hydraulic oil generates damping force as it flows through the first oil passage 124. The third chamber 203 is a compensation chamber, used to accommodate hydraulic oil overflowing from the working chamber and to replenish hydraulic oil into the working chamber. In this embodiment, the valve body 51 is located near the free piston assembly 4, and the valve disc 52 is located near the damping assembly 12. This design allows for rapid compensation of hydraulic oil from the compensation chamber to the working chamber during the piston rod 11 extension process, quickly adjusting the damping characteristics of the shock absorber and enhancing the stability of the shock absorber during operation.

[0035] In another embodiment, the valve disc 52 may also include a resilient valve plate covering both ends of the second oil passage. That is, the bottom valve assembly 5 can adopt a structure similar to the damping assembly 12 described above. With the resilient valve plate structure, when hydraulic oil flows through the through-hole 520, it exerts a force on the resilient valve plate, driving it to elastically deform and open. This elastic deformation can automatically adjust according to the flow rate and pressure of the hydraulic oil, thereby achieving adaptive adjustment of the flow area of ​​the second oil passage. For example, when the hydraulic oil flow rate is large and the pressure is high, the resilient valve plate will open at a larger angle, increasing the flow area of ​​the second oil passage and making it easier for the hydraulic oil to pass through; when the hydraulic oil flow rate is small and the pressure is low, the resilient valve plate will return to a partially or fully closed state, reducing the flow area of ​​the second oil passage and restricting the flow of hydraulic oil. This dynamic adjustment function allows the bottom valve assembly 5 to better adapt to different working conditions and improve the performance of the shock absorber.

[0036] The working principle of the multi-chamber vibration damper 100 provided in this application is as follows. During the operation of the multi-chamber vibration damper 100, the hydraulic oil flows between the chambers through the first oil passage 124 and the second oil passage. When the piston rod 11 is moved by an external force, such as when it is pressed inward, the volume of the second chamber 202 is compressed and reduced, and the hydraulic oil flows to the first chamber 201 through the first oil passage 124 on the damping assembly 12. In this process, due to the influence of the elastic deformation of the metal sheet 122 on the flow area of ​​the first oil passage 124, a certain resistance is generated, forming a damping force. At the same time, the hydraulic oil pressure in the second chamber 202 increases, and part of the hydraulic oil in the second chamber 202 flows to the third chamber 203 through the second oil passage on the bottom valve assembly 5. The flow area of ​​the second oil passage is affected by the size of the flow hole 510, the annular connecting groove 512 and the through hole 520, which also generates corresponding resistance, further increasing the damping force. When the piston rod 11 is extended, the process is reversed. The hydraulic oil in the third chamber 203 flows to the second chamber 202 through the second oil passage, and the free piston body 41 is pushed by the elastic force of the elastic device 42 and moves in the same direction as the piston rod assembly 1 to avoid idle stroke in the extension direction. At the same time, the hydraulic oil in the first chamber 201 flows to the second chamber 202 through the first oil passage 124, which also generates damping force and achieves vibration reduction effect.

[0037] This application also provides a vibration-damping seat system, which includes a mounting base, a seat frame, and at least one of the aforementioned multi-chamber vibration dampers 100. One end of the multi-chamber vibration damper 100 is connected to the mounting base, and the other end is connected to the seat frame to achieve buffering and vibration reduction between the seat frame and the mounting base. The vibration-damping seat system can be used for seats in vehicles or for seats in other scenarios.

[0038] In practical applications, the mounting base can be a fixed structure on a vehicle, ship, or other equipment that requires a seat, while the seat frame supports the seat surface and other seat components. When the equipment vibrates during operation, the multi-chamber vibration damper 100 absorbs and attenuates vibration energy through its internal oil flow and damping characteristics, significantly reducing the energy transmitted to the seat frame, thereby improving the stability and comfort of the seat.

[0039] As described above in the specific embodiments, the multi-chamber vibration damper 100 provided in this application, through its three-chamber structure and two oil passages, enables the multi-chamber vibration damper 100 to automatically adjust the flow characteristics and damping force of the hydraulic oil under different working stages and stress conditions, without the need for high-pressure gas, thus avoiding the generation of oil-gas mixing noise. Simultaneously, because it does not rely on high-pressure gas, the installation space requirement is reduced, making installation more convenient. Moreover, the design of the two oil passages can be flexibly adjusted according to actual needs, meeting the requirements of high-damping vibration reduction and improving vibration reduction performance.

[0040] This application is illustrated through several specific embodiments. Those skilled in the art will understand that various modifications and equivalent substitutions can be made to this application without departing from its scope. Furthermore, various modifications can be made to this application for specific situations or circumstances without departing from the scope of this utility model. Therefore, this application is not limited to the specific embodiments disclosed, but should include all embodiments falling within the scope of the claims of this application.

Claims

1. A multi-chamber vibration damper, comprising a piston rod assembly and a cylinder, the cylinder including a first end having an opening and a second end having a closed end cap, the piston rod assembly including a damping assembly and a piston rod, the damping assembly being located inside the cylinder, the piston rod being connected to the damping assembly and extending out of the cylinder from the opening, characterized in that, The multi-chamber vibration damper further includes a guide sealing assembly, a bottom valve assembly, and a free piston assembly. The guide sealing assembly is fixedly disposed at the first end of the cylinder. The free piston assembly is movably disposed within the cylinder and close to the second end of the cylinder. The bottom valve assembly is disposed within the cylinder and located between the damping assembly and the free piston assembly. A first chamber is formed between the guide sealing assembly and the damping assembly. A second chamber is formed between the damping assembly and the bottom valve assembly. A third chamber is formed between the bottom valve assembly and the free piston assembly. The damping assembly is provided with a first oil passage to allow hydraulic oil to flow between the first and second chambers. The bottom valve assembly is provided with a second oil passage to allow hydraulic oil to flow between the second and third chambers.

2. The multi-chamber vibration damper as described in claim 1, characterized in that, The bottom valve assembly includes a valve body, and the valve body is provided with a valve sealing ring in circumferential direction to seal against the inner wall of the cylinder. The valve body is provided with an overflow hole.

3. The multi-chamber vibration damper as described in claim 2, characterized in that, The bottom valve assembly includes a valve disc and a fastener that connects and fixes the valve disc to the valve body.

4. The multi-chamber vibration damper as described in claim 3, characterized in that, The valve disc has a through hole or a flow groove, which communicates with the flow hole on the valve body.

5. The multi-chamber vibration damper as described in claim 4, characterized in that, An annular connecting groove is provided between the valve body and the valve disc. The flow passage is connected to the through hole or flow groove through the annular connecting groove. The flow passage, the annular connecting groove, and the through hole or flow groove constitute the second oil passage.

6. The multi-chamber vibration damper as described in claim 1, characterized in that, The cylinder has a fixed part, and the bottom valve assembly is connected and fixed to the cylinder through the fixed part.

7. The multi-chamber vibration damper as described in claim 1, characterized in that, The multi-chamber vibration damper includes an elastic device disposed between the free piston assembly and the closed end cap. The elastic device elastically abuts against the free piston assembly in a direction close to the piston rod assembly. The free piston assembly is in sealing contact with the inner wall of the cylinder to isolate the third chamber from the elastic device.

8. The multi-chamber vibration damper as described in claim 7, characterized in that, The elastic device includes a spring.

9. The multi-chamber vibration damper as described in claim 1, characterized in that, The damping assembly includes a piston body and metal plates disposed at opposite ends of the piston body. The first oil passage extends through opposite ends of the piston body, and the two ends of the first oil passage are covered by the metal plates.

10. A vibration-damping seat system, characterized in that, The vibration-damping seat system includes a mounting base, a seat frame, and at least one multi-chamber vibration damper as described in any one of claims 1 to 9, wherein one end of the multi-chamber vibration damper is connected to the mounting base and the other end is connected to the seat frame to achieve buffering and vibration reduction between the seat frame and the mounting base.

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