Shock absorber, suspension system and vehicle

Abstract

The utility model discloses a shock absorber, a suspension system and a vehicle. The shock absorber comprises a first barrel and a second barrel, and a vent hole is formed in the first end, far away from the first barrel, of the second barrel in the axial direction; a piston rod assembly; the filter plate is arranged in the shell and comprises a framework and a filter screen, the framework covers the first end of the second barrel and is circumferentially arranged on the outer side of the piston rod assembly in a surrounding mode, a mounting hole is formed in the framework, the mounting hole at least partially corresponds to the ventilation hole, and the filter screen is arranged in the mounting hole. Therefore, the mounting hole at least partially corresponds to the ventilation hole, the filter screen is arranged in the mounting hole, the filter screen can filter impurities in air entering the shell from the ventilation hole, the dustproof effect of the shock absorber can be improved, and when the filter screen needs to be cleaned and replaced, the filter screen can be cleaned and replaced conveniently. The whole filter plate can be directly taken out from the shell, so that the operation is simpler and more direct, and the operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a shock absorber, a suspension system and a vehicle. Background Art

[0002] Conventional hydraulic lifting suspension changes the vehicle's suspension height by changing the oil pressure inside the shock absorber. This improves the vehicle's passability while also taking into account the vehicle's operational stability after the load increases.

[0003] In the existing technology, since the shock absorber cannot be sealed, while considering the protection of the piston rod, it is also necessary to consider the exhaust and water leakage structure of the shock absorber. However, during the air intake and exhaust process of the shock absorber, dust and gravel on the road surface will inevitably enter the shock absorber through the exhaust and water leakage structure, which can easily scratch the piston rod inside the shock absorber, thereby affecting the efficiency and safety of the piston stroke. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a vibration damper with good dustproof effect.

[0005] The utility model further proposes a suspension system.

[0006] The utility model further provides a vehicle.

[0007] According to the shock absorber of the embodiment of the utility model, it includes: a shell, the shell includes a first cylinder, a second cylinder and a dust cover, the first cylinder is provided with a connecting portion, the connecting portion is suitable for being connected to the vehicle body, the dust cover is telescopically connected between the first cylinder and the second cylinder, the second cylinder is axially away from the first cylinder. A ventilation hole is provided at the first end, and the ventilation hole is suitable for being connected with the inside of the shell and the outside of the shell respectively; a piston rod assembly, the piston rod assembly is at least partially arranged in the shell and connected to the second cylinder, the piston rod assembly at least partially extends from the shell and is suitable for being connected to the suspension system of the vehicle; a filter plate, the filter plate is arranged in the shell and includes a skeleton and a filter screen, the skeleton cover is arranged at the first end of the second cylinder and is circumferentially arranged on the outside of the piston rod assembly, the skeleton is provided with a mounting hole, the mounting hole at least partially corresponds to the ventilation hole, and the filter screen is arranged in the mounting hole.

[0008] Therefore, by making the mounting hole at least partially correspond to the ventilation hole and arranging the filter in the mounting hole, the filter can filter impurities in the wind entering the interior of the shell from the ventilation hole, thereby improving the dustproof effect of the shock absorber. Moreover, when the filter needs to be cleaned and replaced, the filter plate can be directly taken out of the shell as a whole, which is simpler and more direct and convenient to operate.

[0009] According to some embodiments of the present invention, the mounting hole is arc-shaped, the filter screen and the first end of the second cylinder are axially spaced apart, a filter space is defined between the filter screen and the first end of the second cylinder, and the filter space is correspondingly connected to the ventilation hole.

[0010] According to some embodiments of the present invention, a circumferential length of the filter space is greater than a diameter of the ventilation hole.

[0011] According to some embodiments of the present invention, the radial width of the filtering space is greater than the diameter of the ventilation hole.

[0012] According to some embodiments of the present invention, there are multiple ventilation holes, which are circumferentially spaced apart on the first end of the second cylinder; there are multiple filter screens, and each filter screen corresponds to at least two ventilation holes.

[0013] According to some embodiments of the present invention, a first clamping portion is provided on the inner wall of the frame corresponding to the mounting hole, and a second clamping portion is provided on the edge of the filter screen, and the first clamping portion and the second clamping portion are detachably clamped together.

[0014] According to some embodiments of the present invention, the circumferential edge of the skeleton is interference fit with the inner wall of the second cylinder.

[0015] According to some embodiments of the present invention, the piston rod assembly includes a piston rod and a support rod, one axial end of the support rod is connected to the first end of the second cylinder, the other axial end of the support rod extends toward the outside of the shell and is suitable for being connected to the suspension of the vehicle, the piston rod is arranged in the shell, one axial end of the piston rod is connected to the support rod, the other axial end of the piston rod extends toward a side adjacent to the first cylinder, the filter plate is circumferentially arranged on the outside of the support rod, the inner ring of the filter plate is provided with a first guide portion, and the outer peripheral edge of the support rod is provided with a second guide portion, the first guide portion selectively guides and cooperates with the second guide portion in the axial direction.

[0016] The suspension system according to the present invention includes the shock absorber described above.

[0017] The vehicle according to the present invention includes the suspension system described above.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a schematic diagram of a shock absorber according to an embodiment of the present utility model;

[0021] Figure 2 for Figure 1 Cross-sectional view in the AA direction;

[0022] Figure 3 for Figure 2 Schematic diagram of area B in the middle;

[0023] Figure 4 is a schematic diagram of a second cylinder according to an embodiment of the present utility model;

[0024] Figure 5 for Figure 4 Cross-section in the CC direction;

[0025] Figure 6 It is a schematic diagram of another perspective of the second cylinder according to an embodiment of the present utility model.

[0026] Reference numerals:

[0027] 100. Shock absorber;

[0028] 10. Housing; 11. First cylinder; 111. Connecting portion; 12. Second cylinder; 121. Ventilation hole; 13. Dust cover;

[0029] 20. Piston rod assembly; 21. Piston rod; 22. Support rod; 221. Second guide portion;

[0030] 30. Filter plate; 31. Frame; 311. Mounting hole; 312. First guide portion; 32. Filter screen;

[0031] 40. Filter space. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0033] Reference below Figures 1-6The shock absorber 100 according to an embodiment of the present invention is described. The shock absorber 100 according to the embodiment of the present invention can be applied to a suspension system. In the embodiment of the present invention, the suspension system includes, but is not limited to, a hydraulic lift suspension system with an inverted shock absorber 100. The suspension system according to the embodiment of the present invention can be applied to a vehicle.

[0034] Combine Figure 1 、 Figure 2 and Figure 6 As shown, the shock absorber 100 according to the embodiment of the utility model can mainly include: a shell 10, a piston rod assembly 20 and a filter plate 30, wherein the shell 10 includes a first cylinder 11, a second cylinder 12 and a dust cover 13, and a connecting portion 111 is provided on the first cylinder 11, and the connecting portion 111 is suitable for being connected to the vehicle body, so that the shock absorber 100 can absorb the vibration of the vehicle body to reduce the vibration of the vehicle body and improve the riding comfort.

[0035] Furthermore, in an embodiment of the present invention, the shock absorber 100 cannot be sealed, and a dust cover 13 is provided that is telescopically connected between the first cylinder 11 and the second cylinder 12, which can prevent dust, mud, etc. from entering the first cylinder 11 and the second cylinder 12, and can play a dust-proof role for the piston rod assembly 20.

[0036] Furthermore, a ventilation hole 121 is provided at the first end of the second cylinder 12 axially away from the first cylinder 11, and the ventilation hole 121 is suitable for being connected with the inside of the shell 10 and the outside of the shell 10 respectively, so that the air inside the shell 10 and the air outside the shell 10 can be connected, and the air inside and outside the shell 10 can be kept circulating, thereby avoiding the shock absorber 100 from generating gas noise during operation, and preventing the dust cover 13 from expanding and deforming during the extension and retraction movement of the shock absorber 100.

[0037] Combine Figure 2 As shown, the piston rod assembly 20 is at least partially disposed within the housing 10. The piston rod assembly 20 supports the movement of the piston within the shock absorber 100 housing 10, thereby varying the oil pressure within the shock absorber 100 and, in turn, the height of the suspension system to improve vehicle maneuverability. Furthermore, the piston rod assembly 20 is connected to the second cylinder 12, ensuring the structural reliability of the piston rod assembly 20 within the shock absorber 100. The piston rod assembly 20 at least partially extends from the housing 10 and is adapted to connect to the vehicle's suspension system. This allows the shock absorber 100 to absorb vibrations from the suspension system and vehicle body, thereby reducing the transmission of road excitations to the vehicle body.

[0038] Combine Figure 2 、 Figure 3 and Figure 5As shown, the filter plate 30 is disposed within the housing 10 and includes a frame 31 and a filter screen 32. The frame 31 covers the first end of the second cylindrical body 12 and is circumferentially disposed around the outside of the piston rod assembly 20. This not only ensures the structural stability of the frame 31 within the housing 10, but also prevents the frame 31 from interfering with the movement of the piston rod assembly 20. The frame 31 defines a mounting hole 311, which at least partially corresponds to the ventilation hole 121. The filter screen 32 is disposed within the mounting hole 311, so that the filter screen 32 at least partially corresponds to the ventilation hole 121, thereby filtering air entering the housing 10 from outside the housing 10 through the ventilation hole 121 to prevent impurities such as dirt and gravel from entering the housing 10. This also ensures the structural stability of the filter screen 32 at the ventilation hole 121.

[0039] Therefore, by covering the skeleton 31 on the first end of the second cylinder 12 and circumferentially surrounding the outer side of the piston rod assembly 20, the mounting hole 311 is at least partially aligned with the ventilation hole 121, and the filter 32 is arranged in the mounting hole 311. The filter 32 can filter impurities in the wind entering the interior of the shell 10 from the ventilation hole 121, thereby improving the dustproof effect of the shock absorber 100. Moreover, when the filter 32 needs to be cleaned and replaced, the filter plate 30 can be directly removed from the shell 10 as a whole, which is simpler and more direct and convenient to operate.

[0040] Combine Figure 2 and Figure 3 As shown, the mounting hole 311 is arc-shaped, so that the filter 32 within the mounting hole 311 is disposed circumferentially around the piston rod assembly 20. The filter 32 is axially spaced from the first end of the second cylindrical body 12, and a filter space 40 is defined between the filter 32 and the first end of the second cylindrical body 12. The filter space 40 is in communication with the ventilation hole 121. Specifically, by defining the filter space 40 at the ventilation hole 121, when air from outside the housing 10 enters the filter space 40, the airflow containing grit can be buffered in the filter space 40 before passing through the filter 32 for filtration. This not only slows the flow rate of air through the filter 32 and reduces the impact of the airflow on the filter 32, but also changes the direction of the grit when it contacts the filter 32, thereby improving the filtering effect of impurities in the air and effectively preventing road grit from entering the housing 10 and scratching the piston rod assembly 20, thereby enhancing the dustproof effect of the shock absorber 100.

[0041] In an embodiment of the present invention, the shock absorber 100 is in an inverted state, and the first end of the second cylinder 12 is facing the bottom of the vehicle. Therefore, when water enters the shell 10 through the ventilation hole 121, the water can be blocked by the filter mesh 32 and the skeleton 31, and remain in the filter space 40, and then flow out of the shock absorber 100 through the ventilation hole 121 under the action of gravity. In this way, the shock absorber 100 can be drained, and water is not easily stored inside the shock absorber 100, thereby avoiding the problem of rust inside the shock absorber 100.

[0042] According to the embodiment of the present utility model, combined with Figure 5 As shown, the circumferential length of the filter space 40 is greater than the diameter of the ventilation hole 121. This arrangement can ensure that the area of ​​the filter space 40 along the circumference of the shell 10 exceeds the area of ​​the ventilation hole 121. This not only improves the filtering capacity of impurities by the filter space 40, but also reduces the frequency of cleaning and replacement of the filter plate 30. Moreover, when impurities accumulate to a certain amount in the part of the filter space 40 opposite to the ventilation hole 121, the impurities can be moved to the part of the filter space 40 not opposite to the ventilation hole 121 under the action of external force, thereby not affecting the ventilation of the ventilation hole 121, and effectively preventing the ventilation hole 121 from being blocked.

[0043] According to the embodiment of the present utility model, combined with Figure 5 As shown, the radial width of the filter space 40 is greater than the diameter of the ventilation hole 121. This arrangement can ensure that the radial area of ​​the filter space 40 along the shell 10 exceeds the area of ​​the ventilation hole 121. This not only increases the filtering capacity of impurities by the filter space 40, but also reduces the frequency of cleaning and replacement of the filter plate 30. Moreover, when impurities accumulate to a certain amount in the part of the filter space 40 opposite to the ventilation hole 121, the impurities can be moved to the part of the filter space 40 not opposite to the ventilation hole 121 under the action of external force, thereby not affecting the ventilation of the ventilation hole 121, and effectively preventing the ventilation hole 121 from being blocked.

[0044] Combine Figure 5 and Figure 6 As shown, there are multiple ventilation holes 121, which are circumferentially spaced apart on the first end of the second cylinder 12. There are multiple filter screens 32, each filter screen 32 corresponding to at least two ventilation holes 121. Specifically, in the embodiment of the present invention, the multiple ventilation holes 121 are provided on the first end of the second cylinder 12. This can increase the efficiency of air flow between the interior and exterior of the housing 10 of the shock absorber 100, and can quickly complete air intake and exhaust during the process of raising and lowering the shock absorber 100.

[0045] Furthermore, a plurality of ventilation holes 121 are arranged at intervals along the circumference of the second cylinder 12 at the first end of the second cylinder 12 , so that the intake and exhaust positions of the housing 10 of the shock absorber 100 can be more uniform, thereby improving the efficiency of intake and exhaust.

[0046] Furthermore, in an embodiment of the present invention, there are multiple filter screens 32, and the multiple filter screens 32 are arranged at intervals along the circumference of the second cylinder 12, so that the filter screens 32 correspond to the ventilation holes 121, which not only ensures that the filter screens 32 have a filtering effect on the external air flowing into the shell 10 from the ventilation holes 121, but also ensures the smooth air flow at the ventilation holes 121, and can take into account the air intake and exhaust and dust prevention issues of the shock absorber 100.

[0047] In an embodiment of the present utility model, each filter 32 corresponds to at least two ventilation holes 121, which not only ensures that the filter 32 is connected to the ventilation holes 121, but also increases the area of ​​the filter 32 connected to the filter space 40. This can improve the efficiency of air flowing from the filter space 40 through the filter 32 into the shell 10, effectively prevent the shock absorber 100 from generating gas noise during operation, and prevent the dust cover 13 from expanding and deforming during the extension and retraction movement of the shock absorber 100.

[0048] According to an embodiment of the present invention, a first snap-fit ​​portion is provided on the inner wall of the mounting hole 311 corresponding to the skeleton 31, and a second snap-fit ​​portion is provided on the edge of the filter screen 32. The first snap-fit ​​portion and the second snap-fit ​​portion are removably snap-fitted. Specifically, the skeleton 31 and the filter screen 32 are snap-fitted together by the first snap-fit ​​portion and the second snap-fit ​​portion to achieve installation of the filter screen 32 within the mounting hole 311. The first snap-fit ​​portion is located on the inner wall of the mounting hole 311 corresponding to the skeleton 31, and the second snap-fit ​​portion is located on the edge of the filter screen 32. This allows the filter screen 32 to be disposed within the mounting hole 311 and to be in communication with the corresponding filter space 40. This coupling method has a simple structure and is convenient to operate. It can also facilitate the removal and installation of the filter screen 32, which is beneficial to improving the production efficiency of the filter plate 30.

[0049] According to other embodiments of the present invention, the skeleton 31 and the filter screen 32 may be an integrally formed structure, which can improve the structural strength of the filter screen 32 in the mounting hole 311 and improve the structural reliability of the filter plate 30 .

[0050] According to some embodiments of the present invention, the circumferential edge of the skeleton 31 is interference fit with the inner wall of the second cylinder 12. Such a setting can make the skeleton 31 be subjected to a larger friction force along the axial direction of the shell 10, and can ensure the reliability of the setting of the skeleton 31 of the filter plate 30 at the first end of the second cylinder 12. In this way, when the shock absorber 100 shell 10 is intake and exhaust, the structural stability of the filter plate 30 can be guaranteed, and the problem of the filter plate 30 shaking caused by excessive airflow intensity can be solved, thereby ensuring the reliability of the air filtering effect of the filter plate 30.

[0051] According to other embodiments of the present invention, a limiting groove is provided on the side wall of the second cylinder 12 adjacent to the first end, and a limiting protrusion is provided on the circumferential edge of the skeleton 31. The limiting protrusion and the limiting groove cooperate to fix the skeleton 31 at a position adjacent to the first end of the second cylinder 12.

[0052] According to an embodiment of the present invention, one side of the first end of the skeleton 31 axially facing the second cylinder 12 is bonded and fixed to the second cylinder 12, so that the second cylinder 12 can support the skeleton 31, improve the connection strength between the skeleton 31 and the second cylinder 12, and effectively prevent the skeleton 31 from loosening and displacement during the air intake and exhaust process of the shock absorber 100. Such a setting can ensure the position stability of the filter plate 30 at the ventilation hole 121, and ensure the reliability of the filter plate 30 in filtering the air outside the shell 10.

[0053] Combine Figure 2 As shown, the piston rod assembly 20 includes a piston rod 21 and a support rod 22. One axial end of the support rod 22 is connected to the first end of the second cylinder 12, and the other axial end of the support rod 22 extends toward the outside of the housing 10 and is suitable for connecting to the vehicle's suspension. In this way, the housing 10 of the shock absorber 100 can be connected to the vehicle's suspension through the support rod 22, allowing vibration and force to be transmitted between the vehicle's suspension and the shock absorber 100. The piston rod 21 is disposed within the housing 10 to guide the movement of the piston within the shock absorber 100. One axial end of the piston rod 21 is connected to the support rod 22, and the other axial end of the piston rod 21 extends toward a side adjacent to the first cylinder 11. This ensures that the piston rod 21 is stably disposed within the housing 10 of the shock absorber 100.

[0054] Furthermore, the filter plate 30 is circumferentially arranged on the outside of the support rod 22. On the one hand, the filter plate 30 can be arranged to avoid the support rod 22 to prevent the piston from partially blocking the filter plate 30 when moving axially along the piston rod 21, thereby ensuring smooth intake and exhaust of the shock absorber 100. On the other hand, the filter plate 30 can be arranged adjacent to the first end of the second cylinder 12, so as to ensure the reliability of the air outside the shell 10 entering the shell 10 and then being filtered by the filter plate 30, which is beneficial to improving the dustproof ability of the shock absorber 100.

[0055] Combine Figure 3 As shown, the inner ring of the filter plate 30 is provided with a first guide portion 312, and the outer peripheral edge of the support rod 22 is provided with a second guide portion 221. The first guide portion 312 selectively guides and cooperates with the second guide portion 221 in the axial direction. Such a configuration allows the filter plate 30 to quickly cooperate with the outer peripheral edge of the support rod 22 in the axial direction, which is conducive to improving the installation convenience of the filter plate 30 in the housing 10 and improving the assembly efficiency of the shock absorber 100.

[0056] According to an embodiment of the present invention, a suspension system includes a shock absorber 100 according to an embodiment of the present invention. By providing a filter space 40 between the ventilation hole 121 at the bottom of the housing 10 and the filter plate 30, the shock absorber 100 of the present invention not only ensures normal air intake and exhaust of the shock absorber 100, but also improves the effectiveness of filtering air impurities. This effectively prevents road dirt and gravel from entering the shock absorber 100 and scratching the piston rod 21, thereby ensuring the efficiency of the piston stroke in the shock absorber 100 and operational safety, thereby improving the operational reliability of the suspension system.

[0057] According to an embodiment of the present invention, a vehicle includes the suspension system of the present invention. The shock absorber 100 in the suspension system of the present invention has a better dustproof effect and is more reliable and safe to lift, thereby improving the vehicle's passability and operational stability at different heights.

[0058] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0059] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A shock absorber, characterized in that: include: a housing, the housing comprising a first cylinder, a second cylinder, and a dust cover, the first cylinder being provided with a connecting portion adapted to be connected to a vehicle body, the dust cover being telescopically connected between the first cylinder and the second cylinder, a first end of the second cylinder being axially away from the first cylinder being provided with a ventilation hole adapted to communicate with the interior and exterior of the housing, respectively; a piston rod assembly, the piston rod assembly being at least partially disposed within the housing and connected to the second cylinder, the piston rod assembly at least partially extending from the housing and being adapted to be connected to a suspension system of a vehicle; A filter plate is arranged in the shell and includes a skeleton and a filter screen. The skeleton cover is arranged at the first end of the second cylinder and is circumferentially arranged on the outside of the piston rod assembly. The skeleton is provided with a mounting hole, and the mounting hole at least partially corresponds to the ventilation hole. The filter screen is arranged in the mounting hole.

2. The shock absorber according to claim 1, characterized in that The mounting hole is arc-shaped, the filter screen and the first end of the second cylinder are spaced apart in the axial direction, a filter space is defined between the filter screen and the first end of the second cylinder, and the filter space is correspondingly connected to the ventilation hole.

3. The shock absorber according to claim 2, characterized in that A circumferential length of the filter space is greater than a diameter of the ventilation hole.

4. The shock absorber according to claim 3, characterized in that The radial width of the filter space is greater than the diameter of the ventilation hole.

5. The shock absorber according to claim 1, characterized in that There are a plurality of ventilation holes, which are circumferentially spaced apart on the first end of the second cylinder. There are a plurality of filter screens, and each filter screen corresponds to at least two ventilation holes.

6. The shock absorber according to claim 1, characterized in that The frame is provided with a first clamping portion on an inner wall corresponding to the mounting hole, and the edge of the filter is provided with a second clamping portion. The first clamping portion and the second clamping portion are detachably clamped and matched.

7. The shock absorber according to claim 1, characterized in that The circumferential edge of the skeleton is interference-fitted with the inner wall of the second cylinder.

8. The shock absorber according to claim 1, characterized in that The piston rod assembly includes a piston rod and a support rod, one axial end of the support rod is connected to the first end of the second cylinder, the other axial end of the support rod extends toward the outside of the shell and is suitable for being connected to the suspension of the vehicle, the piston rod is arranged in the shell, one axial end of the piston rod is connected to the support rod, the other axial end of the piston rod extends toward a side adjacent to the first cylinder, the filter plate is circumferentially arranged on the outside of the support rod, the inner ring of the filter plate is provided with a first guide portion, and the outer peripheral edge of the support rod is provided with a second guide portion, and the first guide portion selectively guides and cooperates with the second guide portion in the axial direction.

9. A suspension system, characterized in that: include: The vibration absorber according to any one of claims 1 to 8.

10. A vehicle, characterized in that: include: The suspension system of claim 9.

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