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 shell, a connecting piece and a connecting piece, a ventilation hole is formed in the second shell; the piston rod is provided with a first fixing part; the sealing cover is circumferentially arranged on the outer side of the piston rod in a surrounding mode, a second fixing part is arranged at one axial end of the sealing cover, the first fixing part and the second fixing part are matched in a clamped mode, and the other axial end of the sealing cover abuts against the base for limiting. Therefore, through connection and fixation of the first fixing part and the second fixing part, the sealing cover, the piston rod, the base and the supporting rod jointly form a sealed space, and the connecting position of the base and the supporting rod and the connecting position of the piston rod and the supporting rod are located in the sealed space, so that the connecting position of the base and the supporting rod can be achieved. And the joint of the piston rod and the supporting rod is isolated from the outside of the sealed space, so that the problem of corrosion caused by water storage at the joint of the base and the supporting rod and at the joint of the piston rod and the supporting rod after water enters the shock absorber can be avoided.

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] With the development of technology and the improvement of users' living standards, vehicles have become an essential means of transportation for people. A suspension system is provided in a vehicle. The suspension system is a device for transmitting the interaction force between the vehicle body and the ground. The suspension transmits the acting force and torque feedback from the road surface. During the transmission process, the suspension can attenuate the vibration and impact transmitted by the vehicle's suspension, and can improve the driving experience of the driver.

[0003] In the related art, most suspension systems are composed of elastic members, guiding mechanisms and shock absorbers. The shock absorbers in the prior art are generally located at the bottom of the vehicle, and components such as dust covers, support rods and piston rods are provided on the shock absorbers to ensure the normal operation of the shock absorbers. However, in the prior art, since the connections between the components in the shock absorber cannot be completely sealed, corrosion problems will occur due to water accumulation at the gaps between some components after the shock absorber gets water. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a shock absorber that can prevent the corresponding parts from being corroded after water enters the interior.

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

[0006] The utility model further provides a vehicle.

[0007] The shock absorber according to the present utility model includes: a housing, the housing includes a first housing, a second housing and a dust cover, the first housing is provided with a connecting portion, the connecting portion is adapted to be connected to a vehicle body, the second housing includes a housing main body and a base, the dust cover is telescopically connected between the first housing and the housing main body, the base is disposed at an end of the housing main body axially away from the dust cover, the second housing is provided with a ventilation hole, the ventilation hole is adapted to be connected to the inside and the outside of the housing respectively; a piston rod assembly, the piston rod assembly includes a piston rod and a support rod, one axial end of the support rod is connected to the base, the other axial end of the support rod extends towards the outside of the housing and is adapted to be connected to a vehicle suspension, the piston rod is disposed inside the housing, one axial end of the piston rod is connected to the support rod, the other axial end of the piston rod extends towards a side adjacent to the first housing, and a first fixing portion is provided on the piston rod; a sealing cover, the sealing cover is circumferentially disposed around the outside of the piston rod, the sealing cover extends axially on the piston rod, a second fixing portion is provided at one axial end of the sealing cover, the first fixing portion and the second fixing portion are connected and fixed, the other axial end of the sealing cover extends towards the base and abuts against the base for limiting; the sealing cover, the piston rod, the base and the support rod together form a sealed space, the connection between the base and the support rod is located in the sealed space, and the connection between the piston rod and the support rod is located in the sealed space.

[0008] Thus, by connecting and fixing the first fixing portion and the second fixing portion, the sealing cover, the piston rod, the base and the support rod together form a sealed space, and the connection between the base and the support rod and the connection between the piston rod and the support rod are located in the sealed space, so that the connection between the base and the support rod and the connection between the piston rod and the support rod can be isolated from the outside of the sealed space, and the corrosion problem caused by water accumulation at the connection between the base and the support rod and the connection between the piston rod and the support rod after water enters the shock absorber can be avoided.

[0009] In some examples of the present utility model, the first fixing portion is located between the two axial ends of the piston rod, one of the first fixing portion and the second fixing portion is a clamping groove, and the other is a clamping protrusion, and the clamping groove and the clamping protrusion are in clamping fit.

[0010] In some examples of the present utility model, the first fixing portion is a limiting groove, the second fixing portion is a limiting protrusion, the limiting groove is located between the piston rod and the support rod, and the limiting protrusion extends into the limiting groove and is in interference fit with the limiting groove.

[0011] In some examples of the present utility model, the sealing cover is frustum-shaped and the cross-sectional area in the radial direction gradually increases in the direction close to the base.

[0012] In some examples of the present utility model, a first threaded hole is provided in the middle of the base, one axial end of the support rod is threadedly connected to the first threaded hole, and the part between the support rod and the first threaded hole is located in the sealed space.

[0013] In some examples of the present utility model, a second threaded hole is provided in the middle of the support rod, one axial end of the piston rod is threadedly connected to the second threaded hole, and the part between the piston rod and the second threaded hole is located in the sealed space.

[0014] In some examples of the present utility model, the ventilation hole is arranged at an interval from the sealing cover and is located outside the sealed space.

[0015] In some examples of the present utility model, a sealing medium is provided inside the connection between the base and the support rod, and the sealing medium includes at least one of sealant, sealing wax, and sealing oil; and / or a sealing medium is provided inside the connection between the piston rod and the support rod, and the sealing medium includes at least one of sealant, sealing wax, and sealing oil.

[0016] The suspension system according to an embodiment of the present utility model includes: the shock absorber described above.

[0017] The vehicle according to an embodiment of the present utility model includes: the suspension system described above.

[0018] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0019] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

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

[0021] Figure 2 is a schematic diagram of a shock absorber according to an embodiment of the present utility model;

[0022] Figure 3 is a cross-sectional view of a shock absorber according to an embodiment of the present utility model;

[0023] Figure 4 is a partial cross-sectional view of a shock absorber according to an embodiment of the present utility model;

[0024] Figure 5 is a partial cross-sectional view of a shock absorber according to an embodiment of the present utility model;

[0025] Figure 6 is a partial cross-sectional view of a shock absorber according to another embodiment of the present utility model.

[0026] Reference numerals:

[0027] 100, shock absorber;

[0028] 10, housing; 101, first housing; 102, second housing; 103, dust cover; 104, connecting portion;

[0029] 1021, housing main body; 1022, base; 1023, support rod; 1024, ventilation hole; 1025, filter element;

[0030] 20, piston rod; 201, first fixing portion;

[0031] 30, sealing cover; 301, second fixing portion. Detailed implementation manners

[0032] The embodiments of the present utility model will be described in detail below. The embodiments described with reference to the drawings are exemplary. The embodiments of the present utility model will be described in detail below.

[0033] Reference will be made below to Figures 1 - 6 describe the shock absorber 100 according to an embodiment of the present utility model. The shock absorber 100 can be applied to a suspension system, and the suspension system can be applied to a vehicle.

[0034] In combination with Figures 1 - 6 as shown, the shock absorber 100 according to the present utility model mainly includes: a housing 10, a piston rod piston rod assembly, and a sealing cover 30. Among them, the housing 10 includes a first housing 101, a second housing 102, and a dust cover 103, which can form the basic framework of the housing 10 of the shock absorber 100 and ensure the rationality of the structural design of the shock absorber 100.

[0035] Further, the second housing 102 includes a housing main body 1021 and a base 1022. The base 1022 is disposed at an end of the housing main body 1021 axially away from the dust cover 103. The piston rod assembly includes a piston rod 20 and a support rod 1023. One axial end of the support rod 1023 is connected to the base 1022. The other axial end of the support rod 1023 extends outwardly from the housing 10 and is adapted to be connected to the vehicle suspension. The piston rod 20 is disposed within the housing 10. One axial end of the piston rod 20 is connected to the support rod 1023. The other axial end of the piston rod 20 extends toward the side adjacent to the first housing 101. One axial end of the support rod 1023 is connected to the base 1022. Specifically, the base 1022 is disposed at an end of the housing main body 1021 axially away from the dust cover 103, and one side of the housing main body 1021 and the base 1022 are connected in the radial direction. One axial end of the support rod 1023 is connected to the other side of the base 1022 in the radial direction. In this way, the interconnection between the housing main body 1021, the base 1022 and the support rod 1023 can be realized, so that the basic structure of the second housing 102 can be formed, and the rationality and stability of the structure of the second housing 102 can be ensured.

[0036] Further, a connecting portion 104 is provided on the first housing 101. The connecting portion 104 is adapted to be connected to the vehicle body. The other axial end of the support rod 1023 extends outwardly from the housing 10 and is adapted to be connected to the vehicle suspension. In this way, the connection between the vehicle suspension and the second housing 102 can be realized through the support rod 1023, and the shock absorber 100 can be connected and fixed between the vehicle body and the vehicle suspension. Specifically, during the running of the vehicle, the impact and vibration received by the suspension can be effectively transmitted to the shock absorber 100. After being buffered by the shock absorber 100, the remaining impact force is transmitted to the vehicle body, so that the vibration amplitude transmitted from the vehicle suspension to the vehicle body can be reduced, which helps the shock absorber 100 to play its role.

[0037] Further, the dust cover 103 is telescopically connected between the first housing 101 and the housing main body 1021. This can not only prevent impurities from entering the interior of the shock absorber 100 and contaminating the lubricating oil, ensuring the good performance of the lubricating oil, but also prevent impurities from causing wear to the parts inside the shock absorber 100, and can avoid problems such as oil leakage or component damage caused by impurities, and can effectively extend the service life of the shock absorber 100. In addition, the telescopic property of the dust cover 103 can not only make the dust cover 103 suitable for cooperating with the relative movement between the first housing 101 and the second housing 102 of the shock absorber 100, but also absorb a part of the impact force transmitted from the vehicle suspension to the vehicle body.

[0038] Further, ventilation holes 1024 are provided on the second housing 102, and the ventilation holes 1024 are adapted to be connected to the inside and the outside of the housing 10 respectively. Specifically, ventilation holes 1024 are formed in the second housing 102. The first side of the ventilation hole 1024 is communicated with the inside of the housing 10, and the second side of the ventilation hole 1024 is communicated with the outside of the housing 10. During the driving of the vehicle, certain heat and pressure changes will occur inside the shock absorber 100. Through the ventilation holes 1024, the inside and the outside of the housing 10 can be communicated. The ventilation holes 1024 can allow a certain amount of air to flow through to balance the internal pressure, can avoid problems such as gas noise or expansion and deformation of the dust cover 103, and can prevent the shock absorption effect from being affected due to gas accumulation. In addition, the arrangement of the ventilation holes 1024 can also drain the water entering the shock absorber 100, making it difficult for water to accumulate inside the shock absorber 100, thereby avoiding the corrosion problem caused by water accumulation inside the shock absorber 100.

[0039] Further, the piston rod 20 is disposed inside the housing 10. One axial end of the piston rod 20 is connected to the support rod 1023, and the other axial end of the piston rod 20 extends toward the side adjacent to the first housing 101. This can not only enable the support rod 1023 to drive the piston rod 20 to reciprocate together after receiving the impact force transmitted by the vehicle's suspension, but also provide sufficient movement space for the piston rod 20.

[0040] Further, a first fixing portion 201 is provided on the piston rod 20, which can facilitate the fixing of other components on the piston rod 20 through the first fixing portion 201 and simplify the installation process of the shock absorber 100.

[0041] Further, the sealing cover 30 is circumferentially disposed around the outside of the piston rod 20 and extends axially on the piston rod 20. A second fixing portion 301 is provided at one axial end of the sealing cover 30, and the first fixing portion 201 and the second fixing portion 301 are connected and fixed. This can not only make the connection between the piston rod 20 and the sealing cover 30 simple and direct, but also make the connection between the piston rod 20 and the sealing cover 30 firm and reliable. In addition, it can also facilitate the installation and disassembly between the sealing cover 30 and the support rod 1023.

[0042] Further, the other axial end of the sealing cover 30 extends toward the base 1022 and abuts against the base 1022 for limiting. Specifically, one axial end of the sealing cover 30 is fixedly connected to the piston rod 20, and the other axial end of the sealing cover 30 is tightly connected to the base 1022 through abutting and limiting, so as to tightly fix and connect the sealing cover 30 between the base 1022 and the support rod 1023.

[0043] With such an arrangement, the sealing cover 30, the piston rod 20, the base 1022, and the support rod 1023 together form a sealed space. The connection between the base 1022 and the support rod 1023 is located within the sealed space, and the connection between the piston rod 20 and the support rod 1023 is also located within the sealed space. In this way, the connection between the base 1022 and the support rod 1023, as well as the connection between the piston rod 20 and the support rod 1023, can be isolated from the outside of the sealed space. Thus, not only can the corrosion problem caused by water accumulation at the connection between the base 1022 and the support rod 1023 and at the connection between the piston rod 20 and the support rod 1023 be avoided after water enters the shock absorber 100, but also the wear caused by impurities and other substances entering the shock absorber 100 from the outside to the connection between the base 1022 and the support rod 1023 and at the connection between the piston rod 20 and the support rod 1023 can be avoided.

[0044] In some embodiments of the present utility model, a limiting groove for abutting and limiting with the sealing cover 30 can be provided on the base 1022, which can ensure the accuracy, stability, and tightness of the installation of the sealing cover 30.

[0045] In one embodiment of the present utility model, as shown in Figure 3 、 Figure 4 and Figure 5 One of the first fixing portion 201 and the second fixing portion 301 is a clamping groove, and the other is a clamping protrusion, and the clamping groove and the clamping protrusion are in clamping fit. Specifically, by setting one of the first fixing portion 201 and the second fixing portion 301 as a clamping groove and the other as a clamping protrusion, and through the clamping fit between the clamping groove and the clamping protrusion, the piston rod 20 and the sealing cover 30 are fixedly connected. In this way, not only can the connection between the piston rod 20 and the sealing cover 30 be simple, direct, stable, and reliable, but also the installation process of the sealing cover 30 can be simplified, the installation time and cost can be saved, and the subsequent maintenance and replacement can be facilitated. In addition, the clamping groove provides accurate positioning for the clamping protrusion, which can ensure the accuracy of the connection between the piston rod 20 and the sealing cover 30.

[0046] Furthermore, the clamping groove and the clamping protrusion are tightly fitted, which can form an effective seal between the piston rod 20 and the sealing cover 30.

[0047] In some embodiments of the present utility model, the shapes, sizes, depths, etc. of the clamping groove and the clamping protrusion can be appropriately adjusted according to specific requirements.

[0048] As shown in Figure 3 、 Figure 4 and Figure 5As shown, the first fixing part 201 is located between the two axial ends of the piston rod 20, and the sealing cover 30 extends axially along the piston rod 20. Specifically, by positioning the first fixing part 201 between the two axial ends of the piston rod 20 and making the first fixing part 201 on the side of the piston rod 20 close to the base 1022, one axial end of the sealing cover 30 can be arranged at a position on the piston rod 20 close to the base 1022, and the sealing cover 30 extends axially along the piston rod 20 towards the base 1022. This can not only ensure the structural stability of the first fixing part 201, but also ensure the rationality of the structural arrangement, ensure that there is sufficient space for the sealing cover 30, contribute to the formation of a sealed space, and further ensure the stability and reliability of the structure of the shock absorber 100.

[0049] Furthermore, the first fixing part 201 is circumferentially arranged around the two ends of the piston rod 20, and the second fixing part 301 is circumferentially arranged around one axial end of the sealing cover 30.

[0050] In another embodiment of the present invention, in combination with Figure 6 As shown, the first fixing part 201 is a limiting groove, and the second fixing part 202 is a limiting protrusion. The limiting groove is located between the piston rod 20 and the support rod 1023, and the limiting protrusion extends into the limiting groove and is in interference fit with the limiting groove. Specifically, through the interference fit between the limiting groove and the limiting protrusion, not only can the connection between the sealing cover 30 and the piston rod 20 be made more stable, but also the connection between the sealing cover 30 and the piston rod 20 can be made more simple and direct, and the structural design of the sealing cover 30 and the piston rod 20 can be optimized.

[0051] In combination with Figure 3 、 Figure 4 and Figure 5 As shown, the sealing cover 30 is frustum-shaped and the cross-sectional area in the radial direction gradually increases in the direction close to the base 1022. Specifically, by setting the sealing cover 30 to be frustum-shaped so that the cross-sectional area in the radial direction of the sealing cover 30 gradually increases in the direction close to the base 1022, the connection between the base 1022 and the support rod 1023 and the connection between the piston rod 20 and the support rod 1023 can both be arranged inside the sealing cover 30. This can not only ensure the rationality of the structural arrangement of the sealing cover 30, but also improve the structural stability of the sealing cover 30. In addition, compared with a cylindrical shape and a rectangular shape, the frustum shape has a smaller volume, which can make the overall structure of the shock absorber 100 more compact.

[0052] In combination with Figure 3 、 Figure 4 and Figure 5As shown, a first threaded hole is provided in the middle of the base 1022. One axial end of the support rod 1023 is threadedly connected to the first threaded hole, and the portion between the support rod 1023 and the first threaded hole is located in the sealed space. Specifically, by providing a first threaded hole in the middle of the base 1022 and threadedly connecting one axial end of the support rod 1023 to the first threaded hole, not only can the connection between the base 1022 and the support rod 1023 be simple, direct, stable and reliable, but also the disassembly between the base 1022 and the support rod 1023 can be facilitated, which is convenient for subsequent replacement and maintenance. In addition, threaded connection does not require the use of complex tools or equipment, and can also simplify the installation process and shorten the processing cycle.

[0053] Furthermore, the portion between the support rod 1023 and the first threaded hole is located in the sealed space, which can prevent substances such as water or impurities entering the shock absorber 100 from causing wear or corrosion to the portion between the support rod 1023 and the first threaded hole, can improve the effectiveness and reliability of the connection between the base 1022 and the support rod 1023, and can extend the service life of the shock absorber 100.

[0054] Combined with Figure 3 、 Figure 4 and Figure 5 As shown, a second threaded hole is provided in the middle of the support rod 1023. One axial end of the piston rod 20 is threadedly connected to the second threaded hole, and the portion between the piston rod 20 and the second threaded hole is located in the sealed space. Specifically, by providing a second threaded hole in the middle of the support rod 1023 and threadedly connecting one axial end of the piston rod 20 to the second threaded hole, not only can the connection between the support rod 1023 and the piston rod 20 be simple, direct, stable and reliable, but also the disassembly between the support rod 1023 and the piston rod 20 can be facilitated, which is convenient for subsequent replacement and maintenance. In addition, threaded connection does not require the use of complex tools or equipment, and can also simplify the installation process and shorten the processing cycle.

[0055] Furthermore, the portion between the piston rod 20 and the second threaded hole is located in the sealed space, which can prevent substances such as water or impurities entering the shock absorber 100 from causing wear or corrosion to the portion between the piston rod 20 and the second threaded hole, can improve the effectiveness and reliability of the connection between the support rod 1023 and the piston rod 20, and can extend the service life of the shock absorber 100.

[0056] Combined with Figure 3 、 Figure 4 and Figure 5As shown, the ventilation holes 1024 are spaced apart from the sealing cover 30 and are located outside the sealed space. Specifically, by spacing the ventilation holes 1024 apart from the sealing cover 30 and arranging the ventilation holes 1024 outside the sealed space of the sealing cover 30, not only can the structural stability and effectiveness of the ventilation holes 1024 and the sealing cover 30 be ensured, but also the influence of the ventilation holes 1024 on the sealing effect of the sealing cover 30 can be avoided.

[0057] Combined with Figure 3 and Figure 4 As shown, there are multiple ventilation holes 1024, and the multiple ventilation holes 1024 are spaced apart on the second housing 102. Specifically, there are multiple ventilation holes 1024, and the multiple ventilation holes 1024 are spaced apart on the second housing 102. By setting them in this way, multiple air circulation channels and drainage channels can be established between the inside and outside of the shock absorber 100, enabling the air flow and water accumulation flow inside the shock absorber 100 to be more uniform and coordinated, ensuring good ventilation and drainage effects of the shock absorber 100. Therefore, spacing the multiple ventilation holes 1024 apart on the second housing 102 can not only ensure good air circulation between the inside and outside of the shock absorber 100, but also effectively avoid the problems of rust or corrosion caused by water accumulation inside the shock absorber 100. In addition, a reasonable spacing between the ventilation holes 1024 is beneficial to ensuring the structural stability of the shock absorber 100 and can ensure that the arrangement of the ventilation holes 1024 will not cause damage or influence to the second housing 102 of the shock absorber 100.

[0058] Combined with Figure 3 and Figure 4 As shown, the ventilation holes 1024 are arranged at one end of the second housing 102 axially away from the first housing 101. Specifically, since the second housing 102 is located below the first housing 101, arranging the ventilation holes 1024 at one end of the second housing 102 axially away from the first housing 101, that is, arranging the ventilation holes 1024 on the lower side of the second housing 102, can not only facilitate the connection between the inside and outside of the housing 10 through the ventilation holes 1024, but also facilitate the dirt inside the housing 10 to be discharged to the outside of the housing 10 through the ventilation holes 1024 under the action of gravity.

[0059] Combined with Figure 3 and Figure 4As shown, a filter element 1025 is provided in the ventilation hole 1024. Specifically, by providing the filter element 1025 in the ventilation hole 1024, while ensuring the fluidity of the ventilation hole 1024, the air or water about to pass through the ventilation hole 1024 outside the shock absorber 100 can be filtered, effectively blocking some foreign matters in the air or water from entering the inside of the shock absorber 100. This can not only avoid problems such as component scratches caused by foreign matters entering the inside of the shock absorber 100, but also ensure the cleanliness inside the shock absorber 100, improve the stability and reliability of the shock absorber 100, and extend the service life of the shock absorber 100.

[0060] Combined with Figure 3 and Figure 4 As shown, the filter element 1025 is provided on the first side and / or the second side of the ventilation hole 1024. Specifically, by providing the filter element 1025 on any side of the ventilation hole 1024, not only can foreign matters with larger volumes in the air or water be effectively blocked from entering the inside of the shock absorber 100, but also the structure of the shock absorber 100 can be simplified, and the processing and installation processes of the shock absorber 100 can be simplified.

[0061] In addition, the filter element 1025 can also be provided on both sides of the ventilation hole 1024. With this setting, not only can the filtering effect of the ventilation hole 1024 on foreign matters be effectively improved, but also the cleanliness inside the shock absorber 100 can be further improved, further avoiding problems such as foreign matter accumulation inside the shock absorber 100, improving the reliability of the shock absorber 100, and extending the service life of the shock absorber 100.

[0062] In some embodiments of the present utility model, the number of the filter elements 1025 can be one or more, and the filter elements 1025 can be provided at any position of the ventilation hole 1024. Specifically, the ventilation hole 1024 can be provided not only on the first side and / or the second side of the ventilation hole 1024, but also inside the ventilation hole 1024. The position and number of the filter elements 1025 can be adjusted accordingly according to specific requirements, improving the versatility of the shock absorber 100.

[0063] Combined with Figure 3 and Figure 4 As shown, a limiting step portion is provided on the first side and / or the second side of the ventilation hole 1024, and the filter element 1025 is provided on the limiting step portion. Specifically, by providing a limiting step portion on the first side and / or the second side of the ventilation hole 1024 and arranging the filter element 1025 on the limiting step portion, the limiting step portion and the filter element 1025 can be mutually limited, facilitating the installation and fixation of the filter element 1025 at the ventilation hole 1024, preventing the filter element 1025 from shifting or being misaligned, and ensuring a good filtering effect of the filter element 1025.

[0064] Furthermore, by providing a limiting step portion on the first side and / or the second side of the ventilation hole 1024, the shock absorber 100 can be correspondingly set according to different requirements, enabling the shock absorber 100 to be applicable to different vehicle models or environments and improving the versatility of the shock absorber 100.

[0065] In some embodiments of the present utility model, the filter element 1025 can be welded or adhered to the limiting step portion of the ventilation hole 1024.

[0066] Combined Figure 3 and Figure 4 As shown, the filter element 1025 is a filter net. Specifically, the filter net has a mesh structure with relatively uniform mesh sizes. By setting the filter element 1025 as a filter net, not only can it help block and filter foreign objects with larger volumes, ensuring the filtering effect of the filter element 1025, but also it is convenient for subsequent cleaning and maintenance of the filter element 1025, reducing the manufacturing cost and maintenance cost of the shock absorber 100.

[0067] In some embodiments of the present utility model, the mesh size and material of the filter net can be adjusted according to specific requirements and specific application scenarios.

[0068] Combined Figure 3 、 Figure 4 and Figure 5 As shown, a sealing medium is provided inside the connection between the base 1022 and the support rod 1023, and the sealing medium includes at least one of sealant, sealing wax, and sealing oil; and / or a sealing medium is provided inside the connection between the piston rod 20 and the support rod 1023, and the sealing medium includes at least one of sealant, sealing wax, and sealing oil.

[0069] Specifically, by providing a sealing medium inside the connection between the base 1022 and the support rod 1023, and / or a sealing medium inside the connection between the piston rod 20 and the support rod 1023, not only can it prevent gases, liquids, dust, etc. outside the sealed space from entering the sealed space to cause interference or damage, but also it can prevent substances such as gases inside the sealed space from escaping and affecting the stability inside the sealed space, improving the sealing effect of the sealing cover 30, ensuring the stability of the air pressure inside the sealing cover 30. Additionally, it can avoid or reduce the corrosion problem caused by water accumulation at the connection between the base 1022 and the support rod 1023, and / or the corrosion problem caused by water accumulation at the connection between the piston rod 20 and the support rod 1023.

[0070] Furthermore, the sealing medium includes at least one of sealant, sealing wax, and sealing oil. In this way, the gaps at the first threaded hole and the second threaded hole can be effectively filled by the sealing medium, preventing gases, liquids, dust, etc. from entering or escaping through the gaps at the first threaded hole and the second threaded hole. Additionally, while achieving the sealing effect, the sealing medium can also reduce or avoid friction or wear between the base 1022 and the support rod 1023, and between the piston rod 20 and the support rod 1023, which can improve the stability and reliability of the shock absorber 100.

[0071] The suspension system according to the present invention may mainly include: the above-mentioned shock absorber 100. Specifically, due to the structure of the shock absorber 100 being provided with a sealing cover 30, the connection between the base 1022 and the support rod 1023, and the connection between the piston rod 20 and the support rod 1023 can be isolated from the outside of the sealed space, avoiding corrosion problems caused by water accumulation at the connections between the base 1022 and the support rod 1023, and between the piston rod 20 and the support rod 1023 after water enters the shock absorber. As a result, the shock absorber 100 has good working performance. Applying the shock absorber 100 to the suspension system can improve the stability and reliability of the suspension system and extend the service life of the suspension system.

[0072] The vehicle according to the present invention may mainly include: the above-mentioned suspension system. Specifically, due to the structure of the suspension system applying the shock absorber 100, the stability and reliability of the suspension system are both improved. Applying the suspension system to the vehicle can further improve the stability and reliability of the vehicle, thereby improving the working performance of the vehicle and extending the service life of the vehicle.

[0073] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0074] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0075] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A shock absorber, characterized in that: include: A shell, the shell comprising a first shell, a second shell and a dust cover, the first shell being provided with a connecting portion, the connecting portion being adapted to be connected to a vehicle body, the second shell comprising a shell body and a base, the dust cover being telescopically connected between the first shell and the shell body, the base being provided at an end of the shell body axially away from the dust cover, the second shell being provided with ventilation holes, the ventilation holes being adapted to be respectively connected to the inside of the shell and the outside of the shell; A piston rod assembly, the piston rod assembly comprising a piston rod and a support rod, one axial end of the support rod is connected to the base, the other axial end of the support rod extends toward the outside of the housing and is suitable for being connected to the suspension of the vehicle, the piston rod is arranged in the housing, 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 housing, and a first fixing portion is arranged on the piston rod; A sealing cover, the sealing cover is circumferentially arranged on the outer side of the piston rod, the sealing cover is extended in the axial direction of the piston rod, a second fixing portion is arranged at one axial end of the sealing cover, the first fixing portion and the second fixing portion are connected and fixed, and the other axial end of the sealing cover is extended toward the base and abuts against the base for limiting position; The sealing cover, the piston rod, the base and the support rod together form a sealed space, the connection between the base and the support rod is located in the sealed space, and the connection between the piston rod and the support rod is located in the sealed space.

2. The shock absorber according to claim 1, characterized in that: The first fixing portion is located between the two axial ends of the piston rod, one of the first fixing portion and the second fixing portion is a clamping groove, and the other is a clamping protrusion, and the clamping groove and the clamping protrusion are clamped and matched.

3. The shock absorber according to claim 2, characterized in that: The first fixing portion is a limiting groove, and the second fixing portion is a limiting protrusion. The limiting groove is located between the piston rod and the support rod, and the limiting protrusion extends into the limiting groove and is interference-fitted with the limiting groove.

4. The shock absorber according to claim 3, characterized in that The sealing cover is in a truncated cone shape, and the cross-sectional area in the radial direction gradually increases in the direction approaching the base.

5. The vibration absorber according to claim 1, characterized in that: A first threaded hole is provided in the middle of the base, one axial end of the support rod is threadedly connected to the first threaded hole, and a portion between the support rod and the first threaded hole is located in the sealed space.

6. The shock absorber according to claim 1, characterized in that A second threaded hole is provided in the middle of the support rod, one axial end of the piston rod is threadedly connected to the second threaded hole, and a portion between the piston rod and the second threaded hole is located in the sealed space.

7. The vibration absorber according to claim 1, characterized in that: The ventilation hole is spaced apart from the sealing cover and is located outside the sealing space.

8. The shock absorber according to claim 1, characterized in that A sealing medium is provided in the connection between the base and the support rod, and the sealing medium includes at least one of sealing glue, sealing wax and sealing oil; and / or A sealing medium is arranged in the connection between the piston rod and the support rod, and the sealing medium includes at least one of sealing glue, sealing wax and sealing oil.

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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