Damping structure and damping device

Abstract

The present application belongs to the technical field of vehicle damping, and discloses a damping structure and a damping device. The damping structure comprises an oil storage cylinder, a piston rod, an elastic assembly, a transition assembly and a nylon sliding sleeve. The first end of the piston rod is connected to the oil storage cylinder, and the second end is used for connecting the vehicle body. The elastic assembly comprises a first elastic member and a second elastic member. The first elastic member is arranged on the outer periphery of the oil storage cylinder, and the second elastic member is arranged on the outer periphery of the piston rod. The nylon sliding sleeve is sleeved on the outer periphery of the oil storage cylinder. The transition assembly is limited on the outer periphery of the nylon sliding sleeve. The two ends of the transition assembly respectively abut against the first elastic member and the second elastic member, and the elastic assembly can make the transition assembly and the nylon sliding sleeve reciprocate along the axial direction of the oil storage cylinder. The structure can improve the heat dissipation efficiency of the shock absorber and avoid the early thermal decay of the shock absorber damping. The device applies the damping structure, can improve the working efficiency of the shock absorber, and ensures good damping effect.

Description

Technical Field

[0001] This invention relates to the field of vehicle vibration reduction technology, and in particular to a vibration reduction structure and a vibration reduction device. Background Technology

[0002] With the increasing popularity and intensity of off-road racing, various vehicles are placing higher demands on the strength and durability of shock absorbers. Existing shock absorbers generally employ a dual-spring structure, with the ends of the two springs connected in series via an integrated nylon transition seat. To ensure smooth movement, a metal sleeve is typically placed between the nylon transition seat and the oil reservoir, allowing the nylon transition seat to reciprocate around the metal sleeve. However, this design requires the metal sleeve to completely enclose the oil reservoir, severely hindering heat dissipation and causing premature damping decay, thus reducing the shock absorber's efficiency.

[0003] Therefore, there is an urgent need for a vibration reduction structure and device to solve the above-mentioned technical problems. Summary of the Invention

[0004] One object of the present invention is to provide a vibration damping structure that can improve the heat dissipation efficiency of the vibration damper and avoid premature thermal decay of the vibration damper damping.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A vibration damping structure, comprising:

[0007] Oil storage tank;

[0008] The piston rod has a first end connected to the oil reservoir and a second end used to connect to the vehicle body.

[0009] The elastic component includes a first elastic element and a second elastic element, wherein the first elastic element is disposed on the outer periphery of the oil reservoir and the second elastic element is disposed on the outer periphery of the piston rod;

[0010] A nylon sliding sleeve is fitted around the outer periphery of the oil reservoir.

[0011] A transition component is located on the outer periphery of the nylon sleeve. The two ends of the transition component abut against the first elastic element and the second elastic element, respectively. The elastic component enables the transition component and the nylon sleeve to slide back and forth along the axial direction of the oil reservoir.

[0012] Preferably, the transition assembly includes a first transition seat and a second transition seat, the first transition seat and the second transition seat are detachably connected, and the first elastic member abuts against the first transition seat and the second elastic member abuts against the second transition seat, and both the first transition seat and the second transition seat are made of aluminum.

[0013] Preferably, the first transition seat is provided with a locking hole, and the second transition seat is provided with a locking hole. The locking hole extends through the second transition seat, and at least a portion of the locking member can be simultaneously confined within the locking hole and the locking hole to lock the first transition seat and the second transition seat.

[0014] Preferably, the first transition seat is provided with a first protrusion, and the second transition seat is provided with a second protrusion. When the locking member locks the first transition seat and the second transition seat, the first protrusion and the second protrusion can abut against both ends of the nylon sleeve.

[0015] Preferably, the first transition seat and the second transition seat are interference-fitted.

[0016] Preferably, a limiting component is also provided on the side of the first transition seat away from the second transition seat, and the limiting component is spaced apart from the first transition seat; the limiting component includes a nylon sheath, which is disposed between the outer periphery of the oil reservoir and the first elastic member.

[0017] Preferably, the limiting component further includes a first limiting member, which is disposed at one end of the nylon sheath near the first transition seat. A buffer stroke of length L is formed between the first transition seat and the first limiting member. After the second elastic member pushes the transition component to move a distance L toward the limiting component, the first limiting member can abut against the side of the first transition seat away from the second transition seat.

[0018] Preferably, the limiting component further includes a second limiting member, which is disposed at the end of the nylon sheath opposite to the first limiting member. The first limiting member and the second limiting member can jointly restrict the nylon sheath from moving axially along the oil reservoir.

[0019] Preferably, the first limiting member and the second limiting member are respectively threaded to the outer circumference of the oil reservoir, and the screwing direction of the first limiting member is opposite to that of the second limiting member.

[0020] Another objective of this invention is to provide a damping device that can improve the working efficiency of the damper and ensure good damping effect.

[0021] To achieve this objective, the present invention adopts the following technical solution:

[0022] A vibration damping device, comprising:

[0023] Nitrogen cylinder;

[0024] The oil pipe is connected at one end to the nitrogen cylinder;

[0025] The vibration damping structure has an oil pipe connected to the oil storage tank at the end furthest from the nitrogen cylinder.

[0026] The beneficial effects of this invention are:

[0027] This invention discloses a vibration damping structure. The vibration damping structure includes an oil reservoir, a piston rod, an elastic component, a transition component, and a nylon sleeve. The piston rod has a first end connected to the oil reservoir and a second end connected to the vehicle body. The elastic component includes a first elastic element and a second elastic element, the first elastic element being disposed on the outer periphery of the oil reservoir and the second elastic element being disposed on the outer periphery of the piston rod. The nylon sleeve is fitted onto the outer periphery of the oil reservoir. The transition component is located on the outer periphery of the nylon sleeve, with both ends abutting against the first and second elastic elements respectively. The elastic component allows the transition component and the nylon sleeve to reciprocate along the axial direction of the oil reservoir.

[0028] In this structure, the transition component can slide together with the nylon sleeve, ensuring the smooth operation of the shock absorber, and the nylon material will not scratch the outer circumference of the oil reservoir. In addition, this setting does not require a metal sheath to completely cover the outer circumference of the oil reservoir; only a nylon sleeve is fitted on a part of the outer circumference, so that the heat inside the oil reservoir can be smoothly dissipated from the outer surface, thereby effectively preventing the shock absorber from prematurely thermally decaying and ensuring good vibration reduction effect.

[0029] The present invention also discloses a vibration damping device. By applying this vibration damping structure, the device can improve the working efficiency of the vibration damper and ensure a good vibration damping effect. Attached Figure Description

[0030] Figure 1 This is an isometric view of the vibration damping device provided by the present invention;

[0031] Figure 2 This is a schematic diagram of the transition component and nylon sleeve in the vibration reduction structure provided by the present invention;

[0032] Figure 3 This is a first partial cross-sectional view of the vibration reduction structure provided by the present invention;

[0033] Figure 4 This is a schematic diagram of the limiting component in the vibration reduction structure provided by the present invention;

[0034] Figure 5 This is a second partial cross-sectional view of the vibration reduction structure provided by the present invention.

[0035] In the picture:

[0036] 10. Oil storage tank;

[0037] 20. Piston rod; 21. First end; 22. Second end; 23. Spring seat;

[0038] 30. Elastic component; 31. First elastic element; 32. Second elastic element;

[0039] 40. Transition assembly; 41. First transition seat; 411. First protrusion; 42. Second transition seat; 421. Locking hole; 422. Second protrusion; 43. Locking element;

[0040] 50. Nylon sleeve;

[0041] 60. Limiting component; 61. First limiting member; 611. First body; 612. First snap-fit ​​part; 62. Second limiting member; 621. Second body; 622. Second snap-fit ​​part; 63. Nylon sheath;

[0042] 70. Locking ring;

[0043] 80. Spring disc;

[0044] 100. Nitrogen cylinder;

[0045] 200. Oil pipe. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0047] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0050] With the increasing popularity and intensity of off-road racing, various vehicles are placing higher demands on the strength and durability of their shock absorbers. Therefore, this embodiment provides a shock absorption device, such as... Figure 1 As shown, the device includes a nitrogen cylinder 100, an oil pipe 200, and a vibration damping structure; one end of the oil pipe 200 is connected to the nitrogen cylinder 100; the other end of the oil pipe 200, away from the nitrogen cylinder 100, is connected to an oil reservoir 10. This type of vibration damping device is widely used in automobiles, motorcycles, and off-road vehicles. However, traditional vibration damping structures have poor heat dissipation, which can lead to premature thermal decay of the damper, thereby reducing working efficiency and vibration damping effect.

[0051] To address this technical problem, this embodiment also provides a vibration reduction structure, specifically as follows: Figures 1-3 As shown, the structure includes an oil reservoir 10, a piston rod 20, an elastic component 30, a transition component 40, and a nylon sleeve 50. The piston rod 20 has a first end 21 connected to the oil reservoir 10 and a second end 22 connected to the vehicle body. The elastic component 30 includes a first elastic element 31 and a second elastic element 32, with the first elastic element 31 disposed on the outer periphery of the oil reservoir 10 and the second elastic element 32 disposed on the outer periphery of the piston rod 20. The nylon sleeve 50 is fitted onto the outer periphery of the oil reservoir 10. The transition component 40 is located on the outer periphery of the nylon sleeve 50, with both ends of the transition component 40 abutting against the first elastic element 31 and the second elastic element 32, respectively. The elastic component 30 allows the transition component 40 and the nylon sleeve 50 to reciprocate along the axial direction of the oil reservoir 10.

[0052] In this structure, the transition component 40 can slide together with the nylon sleeve 50, ensuring the smooth operation of the shock absorber, and the nylon material will not scratch the outer periphery of the oil reservoir 10. In addition, this setting does not require the metal sleeve to completely cover the outer periphery of the oil reservoir 10, but only the outer periphery is partially covered with the nylon sleeve 50, so that the heat inside the oil reservoir 10 can be smoothly dissipated from the outer surface, thereby effectively avoiding the premature thermal decay of the shock absorber damping and ensuring good vibration reduction effect.

[0053] Specifically, such as Figure 1As shown, the transition assembly 40 includes a first transition seat 41 and a second transition seat 42. The first transition seat 41 and the second transition seat 42 are detachably connected, and the first elastic member 31 abuts against the first transition seat 41, and the second elastic member 32 abuts against the second transition seat 42. Both the first transition seat 41 and the second transition seat 42 are made of aluminum. Compared with the one-piece transition seat made of nylon in the prior art, this configuration not only improves the structural strength and durability, but also the aluminum structure is very lightweight (high-strength aviation aluminum is used in this embodiment), thereby improving the convenience of disassembly and assembly. At the same time, the detachable connection method also facilitates the subsequent maintenance and replacement of the elastic assembly 30 and the nylon sliding sleeve 50.

[0054] It should be noted that both the first elastic element 31 and the second elastic element 32 are springs, and the diameter of the first elastic element 31 is smaller than the diameter of the second elastic element 32 (for the same material, the larger the diameter of the spring, the greater its rigidity and the less likely it is to deform). Furthermore, as... Figure 1 As shown, a locking ring 70 is provided on the outer periphery of the oil reservoir 10, and a spring disc 80 is provided on one side of the locking ring 70. One end of the first elastic member 31 abuts against the spring disc 80, and the other end abuts against the first transition seat 41. A spring seat 23 is provided near the second end 22 of the piston rod 20. One end of the second elastic member 32 abuts against the second transition seat 42, and the other end abuts against the spring seat 23. Therefore, when the vehicle encounters a bump, the vehicle body will push the piston rod 20 upward, and the spring seat 23 can compress the second elastic member 32. The second elastic member 32 can push the transition component 40 and the nylon sleeve 50 to slide on the outer periphery of the oil reservoir 10, thereby compressing the first elastic member 31. At the same time, one end of the piston rod 20 can move up and down in the oil reservoir 10, so that the hydraulic oil flows in the oil reservoir 10. During the flow, it will pass through the damping hole, thereby generating a damping force, thereby weakening the energy transmitted to the vehicle body. During the process of hydraulic oil flow and generating damping, the nitrogen in the nitrogen cylinder 100 will be compressed. During reverse motion, the expansion of nitrogen gas pushes the hydraulic oil back, thereby keeping the damping force stable.

[0055] To further explain, both the locking ring 70 and the spring disc 80 are threaded into the outer circumference of the oil reservoir 10. The spring disc 80 directly abuts against the first elastic element 31. The locking ring 70 is used to limit the spring disc 80, and the preload on the first elastic element 31 can be adjusted by adjusting the specific position of the locking ring 70.

[0056] Furthermore, such as Figure 2 and Figure 3As shown, the first transition seat 41 is provided with a locking hole (not shown in the figure), and the second transition seat 42 is provided with a locking hole 421. The locking hole 421 penetrates through the second transition seat 42, and at least a portion of the locking member 43 can be simultaneously confined within both the locking hole and the locking hole 421 to lock the first transition seat 41 and the second transition seat 42. This arrangement not only simplifies the structure but also improves the ease of connection between the first transition seat 41 and the second transition seat 42, while also ensuring the overall contact strength between the transition assembly 40 and the elastic assembly 30. Furthermore, since the nylon sleeve 50 is a consumable structure that needs to be replaced periodically, this arrangement allows for quick disassembly, thereby increasing the replacement speed of the nylon sleeve 50.

[0057] It should be noted that in this embodiment, the locking hole does not penetrate the first transition seat 41. In other embodiments, whether the locking hole penetrates the first transition seat 41 can be adjusted according to actual processing requirements, as long as the locking member 43 can be simultaneously confined within both the locking hole and the locking hole 421, and the first transition seat 41 and the second transition seat 42 are locked together. Furthermore, in this embodiment, the locking member 43 is an internal hex bolt, which has high connection strength, small installation space, high fastening accuracy, and good adaptability. In other embodiments, screws, pins, or other structures can also be used.

[0058] In addition, such as Figure 2 As shown, the first transition seat 41 is provided with a plurality of locking holes evenly arranged circumferentially, and the second transition seat 42 is provided with a plurality of locking holes 421 evenly arranged circumferentially, with each locking hole corresponding to a locking hole 421. This arrangement can improve the stability of the connection between the first transition seat 41 and the second transition seat 42, and can also avoid uneven local stress, thereby preventing the first transition seat 41 and the second transition seat 42 from separating during vibration damping operation.

[0059] Furthermore, such as Figure 2 and Figure 3 As shown, the first transition seat 41 is provided with a first protrusion 411, and the second transition seat 42 is provided with a second protrusion 422. When the locking member 43 locks the first transition seat 41 and the second transition seat 42, the first protrusion 411 and the second protrusion 422 can abut against the two ends of the nylon sleeve 50 along the axial direction. In this structure, the two ends of the nylon sleeve 50 along the axial direction abut against the first protrusion 411 and the second protrusion 422 respectively. The inner side of the nylon sleeve 50 is in contact with the oil reservoir 10, and the outer side is in contact with the first transition seat 41 and the second transition seat 42. At this time, the locking member 43 can lock the first transition seat 41 and the second transition seat 42, thereby indirectly fixing the nylon sleeve 50 between the first protrusion 411 and the second protrusion 422. This structure is not only simple, but also can limit the movement of the nylon sleeve 50 from both ends along the axial direction, ensuring that the nylon sleeve 50 can slide synchronously with the transition component 40, and preventing the nylon sleeve 50 from detaching from the transition component 40 and the oil reservoir 10.

[0060] In another embodiment, the first transition seat 41 and the second transition seat 42 are interference-fitted. This not only ensures a detachable connection but also further reduces the assembly difficulty of the first transition seat 41 and the second transition seat 42. It eliminates the need for a locking element 43 and the need to adjust the angles of the first transition seat 41 and the second transition seat 42 to align the locking hole and the locking hole 421. It also provides a limiting and fixing function for the nylon sleeve 50, ensuring ease of operation.

[0061] Considering the relatively large length of the first elastic element 31, its middle portion will bend during compression, potentially scratching the outer circumference of the oil reservoir 10. To address this problem, such as... Figure 1 , Figure 4 and Figure 5 As shown, a limiting component 60 is also provided on the side of the first transition seat 41 away from the second transition seat 42. The limiting component 60 is spaced apart from the first transition seat 41. The limiting component 60 includes a nylon sleeve 63, which is disposed between the outer periphery of the oil reservoir 10 and the first elastic member 31. By providing the nylon sleeve 63, the first elastic member 31 (the middle part of the spring) can be separated from the outer wall of the oil reservoir 10, which can better correct the movement trajectory of the first elastic member 31, so that the first elastic member 31 will not scratch the oil reservoir 10 during deformation. At the same time, the nylon material has good buffering capacity and can fully absorb energy when subjected to impact. Furthermore, the nylon sleeve 63 is spaced apart from the first transition seat 41, which can avoid interference between them, thereby ensuring a good vibration reduction effect.

[0062] Furthermore, such as Figure 4 and Figure 5 As shown, the limiting assembly 60 also includes a first limiting member 61, which is disposed at one end of the nylon sheath 63 near the first transition seat 41. A buffer stroke of length L is formed between the first transition seat 41 and the first limiting member 61. After the second elastic member 32 pushes the transition assembly 40 to move a distance L toward the limiting assembly 60, the first limiting member 61 can abut against the side of the first transition seat 41 away from the second transition seat 42. This arrangement allows the maximum deformation of the first elastic member 31 to be L, thereby preventing the first elastic member 31 from exceeding its reasonable working shape, ensuring that the first elastic member 31 will not be crushed or broken, and thus improving the service life of the vibration damping structure.

[0063] In addition, such as Figure 4 and Figure 5As shown, the limiting component 60 also includes a second limiting member 62, which is disposed at the end of the nylon sheath 63 opposite to the first limiting member 61. The first limiting member 61 and the second limiting member 62 can jointly restrict the nylon sheath 63 from moving axially along the oil reservoir 10. This arrangement can prevent the nylon sheath 63 from moving up and down axially along the oil reservoir 10, thereby keeping the nylon sheath 63 in a preset position and providing good protection.

[0064] Specifically, the first limiting member 61 and the second limiting member 62 are respectively threaded onto the outer periphery of the oil reservoir 10, and the screwing direction of the first limiting member 61 is opposite to that of the second limiting member 62. The threaded engagement effectively improves the ease with which the first limiting member 61 and the second limiting member 62 lock the nylon sleeve 63, allowing it to quickly reach the preset position and be easily adjusted. Furthermore, when the first limiting member 61 and the second limiting member 62 are rotated clockwise, if the first limiting member 61 can move downwards, the second limiting member 62 can move upwards. Thus, under the action of the first limiting member 61 and the second limiting member 62, the nylon sleeve 63 is clamped together, ensuring that the nylon sleeve 63 is always fixed in the preset position. This effectively prevents the first elastic member 31 from shifting to the side or wearing down the oil reservoir 10.

[0065] In addition, such as Figure 5 and Figure 4 As shown, the first limiting member 61 includes a first main body 611 and a first locking part 612 connected to each other, and the second limiting member 62 includes a second main body 621 and a second locking part 622 connected to each other. The first locking part 612 and the second locking part 622 can respectively abut against the two ends of the nylon sheath 63, while the first main body 611 and the second main body 621 can be embedded between the nylon sheath 63 and the outer wall of the oil reservoir 10. This structure can not only lock the nylon sheath 63 through the first locking part 612 and the second locking part 622, but the first main body 611 and the second main body 621 can also support the nylon sheath 63 from the inside, thereby ensuring good performance.

[0066] In summary, the vibration damping structure in this embodiment not only improves the heat dissipation efficiency of the vibration damper and prevents premature damping, but also effectively prevents the first elastic element 31 from scratching the outer wall of the oil reservoir 10, while ensuring that the deformation of the first elastic element 31 remains within a safe range. The application of this vibration damping structure in the vibration damping device of this embodiment improves working efficiency and ensures a good vibration damping effect.

[0067] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A vibration damping structure characterized by comprising: The utility model relates to a kind of oil storage cylinder and piston rod, including: Oil storage cylinder (10); Piston rod (20), first end (21) is connected to the oil storage cylinder (10), second end (22) is used to connect vehicle body; Elastic component (30), including first elastic member (31) and second elastic member (32), the first elastic member (31) is arranged on the outer periphery of the oil storage cylinder (10), and the second elastic member (32) is arranged on the outer periphery of the piston rod (20); Nylon sliding sleeve (50), sleeve is set on the outer periphery of the oil storage cylinder (10); Transition component (40), limited to the outer periphery of the nylon sliding sleeve (50), the two ends of the transition component (40) respectively with the first elastic member (31), the second elastic member (32) abut, and the elastic component (30) can make the transition component (40) and the nylon sliding sleeve (50) together along the axial direction of the oil storage cylinder (10) reciprocating slide; The transition component (40) includes first transition seat (41) and second transition seat (42), the first transition seat (41) is detachably connected with the second transition seat (42), and the first elastic member (31) is in abutment with the first transition seat (41), and the second elastic member (32) is in abutment with the second transition seat (42); The side of the first transition seat (41) away from the second transition seat (42) is further provided with a limiting component (60), and the limiting component (60) is spaced apart from the first transition seat (41);The limiting component (60) includes nylon sheath (63), and the nylon sheath (63) is arranged between the outer periphery of the oil storage cylinder (10) and the first elastic member (31); The limiting component (60) further includes first limiting member (61), and the first limiting member (61) is arranged at one end of the nylon sheath (63) close to the first transition seat (41), and a buffer stroke with a length L is formed between the first transition seat (41) and the first limiting member (61), after the second elastic member (32) pushes the transition component (40) to move distance L towards the limiting component (60), the first limiting member (61) can abut on the side of the first transition seat (41) away from the second transition seat (42); The limiting component (60) further includes second limiting member (62), and the second limiting member (62) is arranged at one end of the nylon sheath (63) away from the first limiting member (61), and the first limiting member (61) and the second limiting member (62) can jointly limit the nylon sheath (63) to move along the axial direction of the oil storage cylinder (10); The first limiting member (61) and the second limiting member (62) are respectively screwed with the outer periphery of the oil storage cylinder (10), and the screwing direction of the first limiting member (61) is opposite to the screwing direction of the second limiting member (62).

2. The damping structure according to claim 1, characterized by The first transition seat (41) and the second transition seat (42) are both made of aluminum.

3. The damping structure according to claim 2, characterized by The first transition seat (41) is provided with a locking hole, the second transition seat (42) is provided with a locking hole (421) penetrating through the second transition seat (42), and at least part of the locking member (43) can be simultaneously limited in the locking hole and the locking hole (421) to lock the first transition seat (41) and the second transition seat (42).

4. The damping structure according to claim 3, characterized by The first transition seat (41) is provided with a first protrusion (411), the second transition seat (42) is provided with a second protrusion (422), and when the locking member (43) locks the first transition seat (41) and the second transition seat (42), the first protrusion (411) and the second protrusion (422) can abut against both ends of the nylon sliding sleeve (50).

5. The damping structure according to claim 2, wherein The first transition seat (41) and the second transition seat (42) are in interference fit.

6. A vibration damping device characterized by comprising: Comprise: A nitrogen cylinder (100); A tubing (200) with one end communicated to the nitrogen cylinder (100); The damping structure according to any one of claims 1-5, one end of the tubing (200) away from the nitrogen cylinder (100) is communicated to the oil storage cylinder (10).

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