Shock absorber and vehicle

Abstract

The utility model relates to the technical field of vibration damping devices, and discloses a vibration damper and a vehicle. The support structure is connected to the end, away from the telescopic cylinder, of the piston rod and comprises a main body assembly, a sealing cavity is formed in the main body assembly, and at least part of the piston rod penetrates into the sealing cavity; the valve plate unit is arranged in the sealing cavity and fixedly connected with the piston rod, the valve plate unit is suitable for dividing the sealing cavity into at least two sub-cavities, and the sub-cavities are filled with media; channels communicated with the adjacent sub-cavities are formed in the valve plate units; the piston rod moves in the axis direction and is suitable for enabling a medium to penetrate through the valve block unit and flow between the adjacent sub-cavities. According to the shock absorber, the impact of the piston rod can be relieved, the impact of the piston rod is converted into heat energy through damping work of the valve plate unit, the heat energy is dissipated in the air after being transmitted outwards, and the risk that an elastic body is torn due to heat accumulation and the risk that abnormal sound is generated due to friction between the elastic body and peripheral parts are avoided.

Description

Technical Field

[0001] This utility model relates to the field of vibration damping device technology, specifically to a vibration damper and a vehicle. Background Technology

[0002] Shock absorbers are an important component of vehicles, contributing to improved ride comfort and driving reliability. The upper support of the shock absorber, serving as the component connecting the shock absorber to the vehicle body, serves two purposes: firstly, it connects to the piston rod and absorbs piston rod impacts through built-in buffers; secondly, it connects to the vehicle body and provides mounting holes for the connecting bolts.

[0003] In related technologies, the buffer components installed inside the upper support of the shock absorber are generally made of stamped iron plate riveted and fixed with an embedded elastomer, or cast aluminum riveted and fixed with an embedded elastomer; the material of the elastomer is usually polyurethane or vulcanized rubber. However, conventional elastomers are prone to heat accumulation due to repeated compression, recovery, and oscillation deformation, which can easily lead to elastomer tearing failure; furthermore, conventional elastomers pose a risk of abnormal noise due to friction with surrounding parts caused by deformation. Utility Model Content

[0004] In view of this, the present invention provides a shock absorber and vehicle to solve the problems that conventional elastomers are prone to tearing failure due to heat accumulation and abnormal noise caused by friction with surrounding parts due to deformation.

[0005] In a first aspect, this utility model provides a vibration damper, comprising:

[0006] Telescopic cylinder;

[0007] A piston rod suitable for extending and retracting relative to a telescopic cylinder along its axial direction; and

[0008] The support structure is connected to the end of the piston rod away from the telescopic cylinder; the support structure includes:

[0009] The main component has a sealed cavity formed therein, and the piston rod at least partially penetrates the sealed cavity;

[0010] A valve plate unit is disposed within a sealing cavity and fixedly connected to a piston rod. The valve plate unit is adapted to divide the sealing cavity into at least two sub-cavities, each sub-cavity being filled with a medium. The valve plate unit forms a channel connecting adjacent sub-cavities.

[0011] When the valve plate unit moves along the axial direction, it is adapted to allow the medium to pass through the valve plate unit and flow between adjacent sub-cavities.

[0012] Beneficial Effects: The shock absorber provided in this embodiment of the utility model can further enhance the vibration reduction effect by setting a support structure at the connection position between the shock absorber and the vehicle body. By setting a valve plate unit within the sealed cavity and fixing the valve plate unit to the piston rod, the valve plate unit is adapted to divide the sealed cavity into at least two sub-cavities, each filled with a medium. The valve plate unit forms a channel connecting adjacent sub-cavities. When the piston rod moves along the axial direction, it drives the valve plate unit to move along the axial direction, allowing the medium to pass through the valve plate unit and flow between adjacent sub-cavities, thereby achieving a vibration reduction effect. By using a combination of valve plate unit and medium, there is no need to use polyurethane or vulcanized rubber as an elastomer. Because the medium has a certain hysteresis effect when flowing between adjacent sub-cavities, it slows down the impact of the piston rod, allowing the impact of the piston rod to be converted into heat energy through the damping work of the valve plate unit. After the heat energy is transferred outward, it dissipates into the air, avoiding the risk of elastomer tearing due to heat accumulation and the risk of abnormal noise caused by friction with surrounding parts.

[0013] In one alternative embodiment, the valve plate unit includes one or more valve plates, at least one valve plate having a through hole; and / or, at least one valve plate having a gap between its circumferential edge and the wall of the sealing cavity.

[0014] Beneficial Effects: Compared to conventional elastomers, which are limited by material constraints and cannot be further increased in density, resulting in limited stiffness provided to the entire vehicle, the support structure of this embodiment achieves adjustable stiffness by rationally setting the specifications of the valve plate units. This allows for a wider stiffness coverage range, enabling the fulfillment of higher stiffness requirements. Furthermore, the orifice diameter of each valve plate is easier to adjust, resulting in smaller differences in the adjustable stiffness range and more precise adjustments. In addition, since the valve plate units can be disassembled into multiple valve plates for separate molding during the manufacturing stage, the processing difficulty is low and the consistency is high. Therefore, once the design scheme is selected and the stiffness is determined, valve plate units of the same specifications applied to the support structure will have smaller stiffness tolerances and higher consistency. Moreover, the stiffness of the support structure in this embodiment is dynamic; the greater the piston rod's moving speed, the greater the damping (i.e., the stiffness), unlike the fixed and unadjustable stiffness of traditional built-in components. This allows the support structure stiffness to dynamically change with the piston rod's impact speed, better adapting to the vehicle's stiffness requirements under different road conditions.

[0015] In one alternative embodiment, the valve plate unit includes a plurality of valve plates, the plurality of valve plates having equal or unequal thicknesses.

[0016] In one alternative embodiment, the valve plate unit includes a plurality of valve plates, at least two of which have through holes, and the diameters of the through holes of the at least two valve plates are the same or different.

[0017] Beneficial effects: By setting the same or different orifice sizes, the requirements of different flow velocities can be met, thereby gradually adjusting the flow damping of the valve plate unit.

[0018] In one alternative implementation, the main component includes:

[0019] The shell has a cavity inside, and the shell has a mounting hole that communicates with the cavity;

[0020] A cover is placed on the housing and seals the mounting holes;

[0021] The working cylinder is located inside the cavity, and the valve plate unit is slidably arranged with the working cylinder.

[0022] In one alternative embodiment, the cover has a first through-hole suitable for the piston rod to pass through, and the housing also has a second through-hole suitable for the piston rod to pass through.

[0023] The support structure also includes:

[0024] The first oil seal is located in the first through-shaft hole of the cover and slides with the piston rod;

[0025] The second oil seal is located in the second through-shaft hole of the housing and slides with the piston rod.

[0026] In one alternative embodiment, a valve disc unit is formed through a valve core hole, and the valve disc unit is sleeved on the outer periphery of the piston rod through the valve core hole; the piston rod has a shoulder, and one side of the valve disc unit abuts against the shoulder;

[0027] The support structure also includes a locking element, which is sleeved on the piston rod and located on the side of the valve plate unit away from the shoulder, so as to lock the valve plate unit between the locking element and the shoulder.

[0028] Beneficial effects: By setting the shoulder, the valve plate unit can be easily installed in place, and by locking the locking part, the valve plate unit can be locked between the locking part and the shoulder.

[0029] In one optional embodiment, the support structure further includes:

[0030] The first reset component and the second reset component abut against both sides of the valve plate unit along the axial direction.

[0031] Beneficial effect: By abutting the first reset member and the second reset member against the two sides of the valve plate unit along the axial direction, a reset force can be provided to the valve plate unit, so that the valve plate unit can be reset to the initial position after the piston rod impact ends, so as to facilitate subsequent actions.

[0032] Secondly, this utility model also provides a vehicle, comprising:

[0033] The vehicle body, and the shock absorbers as described above.

[0034] Since the vehicle includes shock absorbers, which have the same effect as shock absorbers, they will not be elaborated on here. Attached Figure Description

[0035] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 This is an exploded view of the support structure of this utility model;

[0037] Figure 2 This is a cross-sectional schematic diagram of the support structure of this utility model;

[0038] Figure 3 This is a partially enlarged view of the cross-sectional schematic diagram of the support structure of this utility model.

[0039] Explanation of reference numerals in the attached figures:

[0040] 10. Main body assembly; 11. Housing; 111. Second through-shaft hole; 112. Mounting hole; 12. Cover; 121. First through-shaft hole; 13. Working cylinder;

[0041] 20. Piston rod; 21. First oil seal; 22. Second oil seal; 201. Shoulder;

[0042] 30. Valve plate unit; 31. First valve plate; 32. Second valve plate; 33. Third valve plate; 301. Through hole; 302. Valve core hole;

[0043] 41. First reset component; 42. Second reset component; 43. Locking component;

[0044] 50. Sealed cavity; 51. First cavity; 52. Second cavity;

[0045] 60. Cavity. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0047] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0050] Shock absorbers are an important component of vehicles, contributing to improved ride comfort and driving reliability. The upper support of the shock absorber, serving as the component connecting the shock absorber to the vehicle body, serves two purposes: firstly, it connects to the piston rod and absorbs piston rod impacts through built-in buffers; secondly, it connects to the vehicle body and provides mounting holes for the connecting bolts.

[0051] In related technologies, there are two main types of buffer components installed in the upper support of shock absorbers: one is made of single-layer or double-layer stamped iron plates riveted together, with an embedded elastomer, usually vulcanized rubber; the other is made of cast aluminum riveted together, with an embedded elastomer; the elastomer is usually made of polyurethane or vulcanized rubber. However, conventional elastomers are prone to heat buildup due to repeated compression, recovery, and oscillation deformation, which can easily lead to elastomer tearing and failure. Furthermore, conventional elastomers pose a risk of abnormal noise due to friction with surrounding parts caused by deformation. In addition, conventional elastomers are limited by material properties; once a certain density is achieved, the density cannot be increased further, resulting in limited stiffness that can be provided to the entire vehicle.

[0052] The support structure provided by the embodiments of this utility model can convert the impact force of the piston rod into heat energy through the damping action of the valve system and dissipate it into the air, avoiding the risk of elastomer tearing caused by heat accumulation; at the same time, there is no risk of abnormal noise caused by friction with surrounding parts due to deformation; and different damping forces can be generated by the arrangement and combination of different specifications of valve systems, thereby achieving the required stiffness target, providing a wider range of stiffness for the whole vehicle, and is not limited by the material of the elastomer.

[0053] The following is combined Figures 1 to 3 The following describes embodiments of the present invention.

[0054] According to an embodiment of the present invention, a vibration damper is provided, comprising:

[0055] Telescopic cylinder;

[0056] Piston rod 20 suitable for extending and retracting relative to the telescopic cylinder along the axial direction; and

[0057] The support structure is connected to the end of the piston rod 20 away from the telescopic cylinder; the support structure includes:

[0058] The main component 10 has a sealed cavity 50 therein, and the piston rod 20 at least partially penetrates the sealed cavity 50.

[0059] A valve plate unit 30 is disposed in the sealing cavity 50 and fixedly connected to the piston rod 20. The valve plate unit 30 is adapted to divide the sealing cavity 50 into at least two sub-cavities, the sub-cavities being filled with a medium. The valve plate unit 30 forms a channel connecting adjacent sub-cavities.

[0060] When the valve plate unit 30 moves along the axial direction, it is adapted to allow the medium to pass through the valve plate unit 30 and flow between adjacent sub-cavities.

[0061] The vibration damper provided in this embodiment of the invention, by setting a valve plate unit 30 in the sealed cavity 50 and fixing the valve plate unit 30 to the piston rod 20, is adapted to divide the sealed cavity 50 into at least two sub-cavities, the sub-cavities being filled with a medium; the valve plate unit 30 forms a channel connecting adjacent sub-cavities; when the piston rod 20 moves along the axial direction, it drives the valve plate unit 30 to move along the axial direction, enabling the medium to pass through the valve plate unit 30 and flow between adjacent sub-cavities, thereby achieving a vibration damping effect. By using the combination of valve plate unit 30 and medium, there is no need to use polyurethane or vulcanized rubber as an elastomer. Because the medium has a certain hysteresis effect when flowing between adjacent sub-cavities, it reduces the impact of the piston rod 20, so that the impact of the piston rod 20 is converted into heat energy through the damping work of the valve plate unit 30, and the heat energy is dissipated into the air after being transferred outward, avoiding the risk of elastomer tearing caused by heat accumulation and the risk of abnormal noise caused by friction with surrounding parts.

[0062] The valve plate unit 30 is suitable for dividing the sealing cavity 50 into at least two sub-cavities. When the valve plate unit 30 is a group, it can divide the sealing cavity 50 into two sub-cavities. When the valve plate unit 30 is two or more groups spaced apart along the axial direction, it can divide the sealing cavity 50 into multiple sub-cavities. By setting valve plate units 30 of different specifications, different damping effects can be achieved.

[0063] Since the valve plate unit 30 can be arranged and combined in different ways to form different specifications and generate different damping forces, the required stiffness target can be achieved, providing a wider range of stiffness for the whole vehicle and eliminating the problem that the damping stiffness of the shock absorber support is limited by the material of the elastomer in the prior art.

[0064] Optionally, the valve plate unit 30 is made of metal, so the valve plate unit 30 can withstand a certain temperature and will not be damaged due to heat accumulation.

[0065] The specifications of valve plate unit 30 are described in detail below.

[0066] In this embodiment, the valve plate unit 30 is a group, which can divide the sealing cavity 50 into two sub-cavities: the first cavity 51 and the second cavity 52.

[0067] The sub-cavity is filled with a medium, which can be hydraulic oil, water, air, or inert gas, etc.

[0068] After dividing the sealing cavity 50 into at least two sub-cavities, the valve plate unit 30 does not make the adjacent sub-cavities completely independent, but can connect the adjacent sub-cavities at least partially through the channel so that the medium can flow, thereby achieving the effect of damping and vibration reduction.

[0069] In this embodiment, the support structure is connected to one end of the piston rod 20. The piston rod 20, as part of the vibration damper, can be connected to the telescopic cylinder, allowing the piston rod 20 to extend and retract relative to the telescopic cylinder along its axial direction, thereby providing a buffering and vibration-damping effect. Specifically, the support structure can be connected to the end of the piston rod 20 furthest from the telescopic cylinder.

[0070] In this embodiment, the support structure can specifically be an upper support for a shock absorber, with one part connected to the piston rod and the other part connected to the vehicle body, providing mounting holes for the connecting bolts. By setting the valve plate unit 30 and the medium, this embodiment effectively transforms the upper support for the shock absorber into a small shock absorber, further enhancing the vibration reduction effect.

[0071] In some embodiments, the valve plate unit 30 includes one or more valve plates, at least one valve plate having a through hole 301; and / or, at least one valve plate has a gap between its circumferential edge and the cavity wall of the sealing cavity 50. When the valve plate unit 30 includes multiple valve plates, since the thickness of a single valve plate is relatively thin, for example, it can be 0.2 mm, even if adjacent valve plates are in a close fit, as the piston rod 20 moves, the valve plates will undergo slight deformation, creating a small gap between adjacent valve plates, which can ensure that the medium flows smoothly between adjacent valve plates.

[0072] Those skilled in the art will understand that when a through hole 301 is provided on the valve plate, the medium can pass through the through hole 301, that is, the through hole 301 forms part of the aforementioned channel. Correspondingly, when there is a gap between the circumferential edge of the valve plate and the cavity wall of the sealing cavity 50 formed by the main body assembly 10, the medium can also pass through the gap, that is, the gap forms part of the aforementioned channel.

[0073] For a single valve disc, it can be provided with only a through hole 301, or it can be provided with only a gap between the through hole 301 and the cavity wall of the sealing cavity 50, or it can be provided with both a through hole 301 and a gap between the through hole 301 and the cavity wall of the sealing cavity 50.

[0074] With this configuration, when the medium is subjected to compressive force, it can pass through the through holes 301 of each valve plate and / or the gap between the valve plate and the cavity wall of the sealing cavity 50, thereby realizing the flow of the medium from one side of the valve plate unit 30 to the other side, that is, realizing the flow of the medium from one sub-cavity to another sub-cavity.

[0075] by Figure 3 The following explanation is provided:

[0076] When the piston rod 20 vibrates upward, it simultaneously drives the valve plate unit 30 to move upward, thus compressing the medium in the first chamber 51. At this time, the medium in the first chamber 51 moves downward through the channel of the valve plate unit 30 into the second chamber 52.

[0077] When the piston rod 20 vibrates downward, it simultaneously drives the valve plate unit 30 to move downward, thus compressing the medium in the second chamber 52. At this time, the medium in the second chamber 52 moves upward through the channel of the valve plate unit 30 into the first chamber 51.

[0078] Thus, the hysteresis effect generated by the flow of the medium between the first cavity 51 and the second cavity 52 reduces the impact caused by the vibration of the piston rod 20.

[0079] In some embodiments, the valve plate unit 30 includes a plurality of valve plates, the plurality of valve plates having equal or unequal thicknesses.

[0080] In some embodiments, the valve plate unit 30 includes a plurality of valve plates, at least two of which have through holes 301, and the diameters of the through holes 301 of the at least two valve plates are the same or different.

[0081] Optionally, the via 301 can have various structural forms, such as round holes, triangular holes, square holes, pentagonal holes, and irregular shapes.

[0082] Furthermore, the valve plate unit 30 includes multiple valve plates. The thickness of each valve plate, the size of the through hole 301 opened on the valve plate, and the structural form of the valve plate can all be different. Multiple valve plates of the same or different specifications can be arranged and combined to form valve plate units 30 of different specifications. This makes the channel structure connecting the adjacent sub-cavities formed by the valve plate unit 30 meandering and generates different damping forces, thereby achieving the required stiffness target and providing a wider range of stiffness for the whole vehicle.

[0083] Compared to conventional elastomers, which are limited by material constraints and cannot achieve higher densities, resulting in limited stiffness for the entire vehicle, the support structure in this embodiment achieves adjustable stiffness by rationally setting the specifications of the valve plate units 30. Furthermore, it allows for a wider stiffness coverage range, enabling the fulfillment of higher stiffness requirements. Additionally, the aperture size of the through holes 301 on each valve plate is easier to adjust, resulting in smaller differences in the adjustable stiffness range of the support structure and more precise adjustments.

[0084] Furthermore, since the valve plate unit 30 can be disassembled into multiple valve plates for separate molding during the processing stage, and the processing difficulty is low and the degree of consistency is high, the selection of the scheme during the design stage, i.e. the stiffness is determined, enables valve plate units 30 of the same specifications to have smaller stiffness tolerances and higher degree of consistency when applied to the support structure.

[0085] In addition, the stiffness of the support structure in this embodiment is dynamic. The greater the movement speed of the piston rod, the greater the damping, i.e., the stiffness, rather than the traditional form where the stiffness of the built-in component is fixed and cannot be adjusted. This allows the stiffness of the support structure to change dynamically with the impact speed of the piston rod, making it more adaptable to the stiffness requirements of the vehicle under different road conditions.

[0086] As Figures 1 to 3 shown, as a specific example, the valve plate unit 30 includes a first valve plate 31, a second valve plate 32, and a third valve plate 33 that are sequentially stacked; the first valve plate 31 and the third valve plate 33 are provided with through holes 301, and the second valve plate 32 is provided with a gap from the cavity wall of the sealing cavity 50.

[0087] As Figure 3 shown, the circumferential edges of the first valve plate 31 and the third valve plate 33 are hermetically fitted to the cavity wall of the sealing cavity 50 formed by the main body assembly 10; at least a part of the circumferential edge of the second valve plate 32 forms a gap with the cavity wall of the sealing cavity 50 formed by the main body assembly 10.

[0088] Combined with Figure 3 shown, since the circumferential edges of the first valve plate 31 and the third valve plate 33 are hermetically fitted to the cavity wall of the sealing cavity 50 formed by the main body assembly 10, the medium can only pass through the through hole 301; at the same time, since the second valve plate 32 is not provided with a through hole 301, and at least a part of the circumferential edge of the second valve plate 32 forms a gap with the cavity wall of the sealing cavity 50 formed by the main body assembly 10, the medium can only pass through the gap between the circumferential edge of the second valve plate 32 and the cavity wall, as Figure 3 shown by the arrow in the flow path of the flowing medium.

[0089] From Figure 3 it can be seen that the channel in this embodiment is in a shape similar to a "Ji" character, and the medium flows in a zigzag manner within the valve plate unit 30. Therefore, the flow resistance is relatively large, and the buffering effect on the piston rod 20 is better.

[0090] In some embodiments, the aperture diameter of the through hole 301 of the first valve plate 31 is the same as or different from the aperture diameter of the through hole 301 of the third valve plate 33. For example, the aperture diameter of the through hole 301 of the first valve plate 31 can be larger than the aperture diameter of the through hole 301 of the third valve plate 33.

[0091] By setting the aperture diameters of the same or different sizes, the requirements of different flow velocities can be met, and thus the flow damping of the valve plate unit 30 can be adjusted step by step.

[0092] Since the buffer members provided in the upper support of the shock absorber in the related art generally adopt iron plates that are stamped and riveted for fixation and internally provided with an elastomer, or are cast aluminum and then spin-riveted for fixation and internally provided with an elastomer; the material of the elastomer is usually polyurethane or vulcanized rubber. That is, the upper support of the shock absorber in the related art generally does not have good sealing performance, and the medium cannot be filled in the upper support of the shock absorber. In order to ensure that the end of the piston rod 20 away from the telescopic cylinder can be located inside the support structure, and after the medium is filled inside the support structure, it can still meet the smooth movement of the piston rod 20 along the axial direction without medium leakage, the shock absorber provided in this embodiment is specifically improved as follows.

[0093] In some embodiments, the main component 10 includes:

[0094] The housing 11 has a cavity 60 inside it, and the housing 11 has a mounting hole 112 that communicates with the cavity 60.

[0095] Cover 12 is placed on the housing 11 and seals the mounting hole 112;

[0096] The working cylinder 13 is located inside the cavity 60, and the valve plate unit 30 is slidably disposed with the working cylinder 13.

[0097] In this embodiment, a cavity 60 is formed inside the housing 11. After the cover 12 is placed on the housing 11 and the mounting hole 112 is blocked, the cavity 60 can be made into a sealed cavity 50 by sealing the connection gap, thereby preventing the medium from flowing out of the sealed cavity 50 and ensuring normal use.

[0098] The working cylinder 13 is an annular component, which provides a frictional contact surface for the valve plate unit 30, preventing the valve plate unit 30 from directly rubbing against the inner wall of the housing 11. The outer wall of the working cylinder 13 abuts against the inner wall of the housing 11, which forms a cavity 60, and the inner wall of the working cylinder 13 slides against the circumferential edge of the valve plate unit 30, thereby facilitating the sliding of the valve plate unit 30 relative to the working cylinder 13.

[0099] In some embodiments, the cover 12 has a first through hole 121 suitable for the piston rod 20 to pass through, and the housing 11 has a second through hole 111 suitable for the piston rod 20 to pass through.

[0100] The support structure also includes:

[0101] The first oil seal 21 is disposed in the first through-shaft hole 121 of the cover 12 and slides with the piston rod 20;

[0102] The second oil seal 22 is located in the second through-shaft hole 111 of the housing 11 and slides with the piston rod 20.

[0103] The first oil seal 21 and the second oil seal 22 can not only meet the sealing requirements, but also ensure that the piston rod 20 can slide relative to the housing 11 and the cover 12.

[0104] In some embodiments, the valve plate unit 30 has a valve core hole 302 formed through it, and the valve plate unit 30 is sleeved on the outer periphery of the piston rod 20 through the valve core hole 302; the piston rod 20 has a partial diameter change to form a shoulder 201, and one side of the valve plate unit 30 abuts against the shoulder 201.

[0105] The support structure also includes a locking member 43, which is sleeved on the piston rod 20 and located on the side of the valve plate unit 30 away from the shoulder 201, so as to lock the valve plate unit 30 between the locking member 43 and the shoulder 201.

[0106] By setting the shoulder 201, the valve plate unit 30 can be easily installed in place, and by locking the locking member 43, the valve plate unit 30 can be locked between the locking member 43 and the shoulder 201.

[0107] Specifically, the locking element 43 can be a self-locking nut, and an external thread is provided at the position corresponding to the small diameter section of the piston rod 20.

[0108] In some embodiments not shown, the locking element 43 may also be a pin, a clamp, etc.

[0109] In some embodiments, the support structure further includes:

[0110] The first reset member 41 and the second reset member 42 abut against both sides of the valve plate unit 30 along the axial direction.

[0111] In this embodiment, both the first reset member 41 and the second reset member 42 can be spring structures, wherein the first reset member 41 can be a compression limiting spring and the second reset member 42 can be a tension limiting spring.

[0112] By abutting the first reset member 41 and the second reset member 42 against the two sides of the valve plate unit 30 along the axial direction, a reset force can be provided to the valve plate unit 30, so that the valve plate unit 30 is reset to the initial position after the piston rod 20 impacts, so as to facilitate subsequent actions.

[0113] More specifically, combined Figure 1 and Figure 3 As shown, the upper end of the first reset member 41 abuts against the cover 12, and the lower end abuts against the first valve plate 31; the upper end of the second reset member 42 abuts against the third valve plate 33, and the lower end abuts against the bottom wall of the cavity 60.

[0114] The vibration damper in this embodiment can be a hydraulic vibration damper, a gas vibration damper, an electromagnetic vibration damper, etc.

[0115] The shock absorber provided in this embodiment of the invention can further enhance the shock absorption effect by setting a support structure at the connection between the shock absorber and the vehicle body. The impact force of the piston rod is converted into heat energy and dissipated into the air through the damping action of the valve system, avoiding the risk of elastomer tearing caused by heat accumulation. At the same time, there is no risk of abnormal noise caused by friction with surrounding parts due to deformation. Furthermore, different damping forces can be generated by the arrangement and combination of different specifications of the valve system, thereby achieving the required stiffness target and providing a wider range of stiffness for the whole vehicle, which is not limited by the material of the elastomer.

[0116] By providing a valve plate unit 30 within the sealing cavity 50 and fixing the valve plate unit 30 to the piston rod 20, the valve plate unit 30 is adapted to divide the sealing cavity 50 into at least two sub-cavities, each filled with a medium. The valve plate unit 30 at least partially connects adjacent sub-cavities. When the piston rod 20 moves along the axial direction, the medium can pass through the valve plate unit 30 and flow between adjacent sub-cavities, thereby achieving vibration damping. By using the valve plate unit 30 in combination with the medium, there is no need to use polyurethane or vulcanized rubber as an elastomer. Because the medium has a certain hysteresis effect when flowing between adjacent sub-cavities, it reduces the impact of the piston rod. The impact of the piston rod is converted into heat energy through the damping work of the valve plate unit 30, and the heat energy is dissipated into the air after being transferred outward, avoiding the risk of elastomer tearing due to heat accumulation and the risk of abnormal noise caused by friction with surrounding parts.

[0117] According to an embodiment of the present invention, in another aspect, a vehicle is also provided, comprising:

[0118] The vehicle body, and the shock absorbers as described above.

[0119] Since the vehicle includes shock absorbers, and the shock absorbers include support structures, which have the same effect as the support structures, they will not be described in detail here.

[0120] Alternatively, the vehicle can be a gasoline-powered vehicle or a new energy electric vehicle.

[0121] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and all such modifications and variations fall within the scope defined by the present invention.

Claims

1. A vibration damper, characterized in that, include: Telescopic cylinder; A piston rod (20) adapted to extend and retract relative to the telescopic cylinder along the axial direction; as well as A support structure is connected to the end of the piston rod (20) away from the telescopic cylinder; the support structure includes: a main body assembly (10) having a sealing cavity (50) therein, wherein the piston rod (20) at least partially penetrates the sealing cavity (50); A valve plate unit (30) is disposed in the sealing cavity (50) and fixedly connected to the piston rod (20). The valve plate unit (30) is adapted to divide the sealing cavity (50) into at least two sub-cavities, the sub-cavities being filled with a medium. The valve plate unit (30) forms a channel connecting adjacent sub-cavities. When the valve plate unit (30) moves along the axial direction, it is adapted to allow the medium to pass through the valve plate unit (30) and flow between adjacent sub-cavities.

2. The vibration damper according to claim 1, characterized in that, The valve plate unit (30) includes one or more valve plates, at least one of the valve plates having a through hole (301); and / or, At least one of the valve plates has a gap between its circumferential edge and the wall of the sealing cavity (50).

3. The vibration damper according to claim 2, characterized in that, The valve plate unit (30) includes a plurality of valve plates, the thickness of which may be equal or unequal.

4. The vibration damper according to claim 2, characterized in that, The valve plate unit (30) includes a plurality of valve plates, at least two of the valve plates having the through hole (301), and the diameter of the through hole (301) of at least two of the valve plates is the same or different.

5. The vibration damper according to any one of claims 1 to 4, characterized in that, The main component (10) includes: A housing (11) having a cavity (60) therein, and the housing (11) having a mounting hole (112) communicating with the cavity (60); A cover (12) is placed over the housing (11) and seals the mounting hole (112); The working cylinder (13) is disposed in the cavity (60), and the valve plate unit (30) is slidably disposed with the working cylinder (13).

6. The vibration damper according to claim 5, characterized in that, The cover (12) has a first through hole (121) suitable for the piston rod (20) to pass through; the housing (11) has a second through hole (111) suitable for the piston rod (20) to pass through; The support structure also includes: The first oil seal (21) is disposed in the first through-shaft hole (121) of the cover (12) and slides in cooperation with the piston rod (20); The second oil seal (22) is disposed in the second through-shaft hole (111) of the housing (11) and slides in cooperation with the piston rod (20).

7. The vibration damper according to any one of claims 1 to 4, characterized in that, The valve plate unit (30) has a valve core hole (302) through it, and the valve plate unit (30) is sleeved on the outer periphery of the piston rod (20) through the valve core hole (302); the piston rod (20) has a shoulder (201), and one side of the valve plate unit (30) abuts against the shoulder (201); The support structure further includes a locking member (43), which is sleeved on the piston rod (20) and located on the side of the valve plate unit (30) away from the shoulder (201) to lock the valve plate unit (30) between the locking member (43) and the shoulder (201).

8. The vibration damper according to any one of claims 1 to 4, characterized in that, The support structure also includes: The first reset member (41) and the second reset member (42) abut against both sides of the valve plate unit (30) along the axial direction.

9. The vibration damper according to claim 8, characterized in that, The first reset member (41) includes a compression limiting spring, and the second reset member (42) includes a tension limiting spring.

10. A vehicle, characterized in that, include: The vehicle body, and the shock absorber as described in any one of claims 1 to 9.

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