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 cavity, a second cavity, a piston and a damping adjusting assembly, the first cavity and the second cavity are both used for containing media, the piston is movably arranged in the second cavity, the first cavity and the second cavity are selectively communicated or isolated through the damping adjusting assembly, and the damping adjusting assembly comprises a magnetic suction filter. The magnetic suction filter comprises a magnetic suction part, and the magnetic suction part is used for magnetically adsorbing magnetic metal in a medium flowing through the magnetic suction part. According to the shock absorber, the magnetic metal is attracted through the magnetic attraction part so as to reduce flowing of the magnetic metal in a medium, influence on damping and damage to internal parts, the problem that the internal parts of the shock absorber are abraded by the magnetic metal is solved, the damage risk of the internal parts of the shock absorber is reduced, the stability of the shock absorber is improved, and the service life of the shock absorber is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of shock absorbers, and in particular to a shock absorber, a suspension system and a vehicle. Background Art

[0002] In related technologies, when the shock absorber is working, impurities such as magnetic metals may exist in the medium. These impurities will flow in various chambers along with the medium, causing varying degrees of wear on various parts of the shock absorber, affecting the normal use of the shock absorber. Utility Model Content

[0003] The present application aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, the present application proposes a shock absorber that is conducive to filtering magnetic metals, reducing damage to internal components of the shock absorber caused by magnetic metals, and improving the stability and service life of the shock absorber.

[0004] The present application also proposes a suspension system having the above-mentioned shock absorber.

[0005] The present application also proposes a vehicle having the above suspension system.

[0006] According to the shock absorber of the embodiment of the present application, it includes a first chamber, a second chamber, a piston and a damping adjustment assembly. The first chamber and the second chamber are both used to accommodate a medium. The piston is movably arranged in the second chamber. The first chamber and the second chamber are selectively connected or isolated through the damping adjustment assembly. The damping adjustment assembly includes a magnetic filter. The magnetic filter includes a magnetic portion. The magnetic portion is used to magnetically absorb magnetic metal in the medium flowing through the magnetic portion.

[0007] According to the shock absorber of the embodiment of the present application, the magnetic metal is absorbed by the magnetic attraction part to reduce the flow of magnetic metal in the medium, which affects the damping and damages the internal parts, thereby avoiding the wear of the internal parts of the shock absorber by the magnetic metal, reducing the risk of damage to the internal parts of the shock absorber, and improving the stability and service life of the shock absorber.

[0008] According to some embodiments of the present application, the damping adjustment assembly further includes a valve body, the magnetic portion is installed on a side of the valve body facing the second chamber, and the valve body is provided with at least one channel connecting the first chamber and the second chamber.

[0009] According to some embodiments of the present application, the valve body is provided with a first channel and a second channel. When the piston approaches the damping adjustment assembly, the first channel is closed and the second channel is opened, and the medium in the second chamber is suitable for reaching the side of the valve body away from the magnetic attraction part through the second channel; when the piston moves away from the damping adjustment assembly, the second channel is closed and the first channel is opened, and the medium on the side of the valve body away from the magnetic attraction part is suitable for reaching the magnetic attraction part through the first channel.

[0010] According to some embodiments of the present application, the magnetic filter further includes a filter portion, which is fixedly connected to the magnetic portion, and the filter portion is used to filter impurities in the medium flowing through the filter portion.

[0011] According to some embodiments of the present application, an isolation groove is formed at the connection between the filter portion and the magnetic attraction portion, and the isolation groove has an opening in a direction away from the second chamber. When the first channel is opened, the opening of the isolation groove is connected to the first channel.

[0012] According to some embodiments of the present application, the filter part includes a filter part body and a filter part isolation wall, the filter part body is fixedly connected to the magnetic part, the filter part isolation wall is connected to the filter part body, the filter part isolation wall extends in a direction away from the second chamber, and the isolation groove is formed between the filter part isolation wall and the inner hole wall of the magnetic part.

[0013] According to some embodiments of the present application, an angle between the filter portion isolation wall and the inner hole wall of the magnetic attraction portion ranges from 10° to 30°.

[0014] According to some embodiments of the present application, the filter portion includes: a filter mesh having a plurality of filter holes.

[0015] According to some embodiments of the present application, the roughness of the surface of the filter mesh facing away from the second chamber is greater than the roughness of the surface of the filter mesh facing the second chamber.

[0016] According to some embodiments of the present application, the surface of the filter screen has first grooves for depositing impurities.

[0017] According to some embodiments of the present application, the magnetic attraction portion is constructed as a mesh structure, and the magnetic attraction portion has a plurality of filtering holes.

[0018] According to some embodiments of the present application, a surface of the magnetic attraction portion has a second groove for depositing impurities.

[0019] According to some embodiments of the present application, the magnetic attraction portion is an annular structure, and the filter portion is located at one end of the magnetic attraction portion close to the second chamber.

[0020] According to some embodiments of the present application, the magnetic attraction portion is located on the periphery of the filter portion.

[0021] According to some embodiments of the present application, the filter portion is installed on the magnetic portion; or, the filter portion and the magnetic portion are an integral part.

[0022] According to some embodiments of the present application, the filter portion includes a filter mesh having a plurality of filter holes, and the shock absorber also includes a piston rod, which is connected to the end of the piston facing away from the damping adjustment assembly, and the sum of the hole areas of the filter holes is greater than the cross-sectional area of ​​the piston rod.

[0023] According to some embodiments of the present application, the first channel and the second channel are both connected to the two axial ends of the valve body, and the damping adjustment assembly also includes a first valve plate, a second valve plate and an elastic member. The first valve plate is arranged on the side of the valve body facing the magnetic filter, and the first valve plate can block or open the first channel. The second valve plate is arranged on the side of the valve body away from the magnetic filter, and the second valve plate can block or open the second channel. The elastic member is used to apply an elastic force to the first valve plate to move the first valve plate toward the direction of the second valve plate.

[0024] According to some embodiments of the present application, a first valve hole is formed on the first valve plate, and the first valve hole passes through the first valve plate along the thickness direction of the first valve plate, and the first valve hole is connected to the second channel.

[0025] According to some embodiments of the present application, the magnetic filter further comprises a filter portion, the filter portion is fixedly connected to the magnetic portion, and the filter portion is used to filter impurities in the medium flowing through the filter portion. The damping adjustment assembly further comprises a bolt and a nut, the bolt passing through the second valve disc, the valve body, the first valve disc and the magnetic filter, the elastic member is located between the first valve disc and the magnetic filter, the nut cooperates with the bolt, the nut comprises a nut body and a nut flange, the filter portion has a filter mounting hole, the nut body passes through the filter mounting hole, the nut flange is located on the side of the filter portion away from the first valve disc, and the outer diameter of the nut flange is larger than the aperture of the filter mounting hole.

[0026] According to another embodiment of the present application, a suspension system includes the above-mentioned shock absorber.

[0027] According to the suspension system of the embodiment of the present application, the shock absorber thereof absorbs magnetic metal through the magnetic attraction part to reduce the flow of magnetic metal in the medium, affecting the damping and damaging the internal parts, thereby avoiding the wear problem of the internal parts of the shock absorber by the magnetic metal, reducing the risk of damage to the internal parts of the shock absorber, and improving the stability and service life of the shock absorber.

[0028] A vehicle according to another embodiment of the present application includes the above-mentioned suspension system.

[0029] According to the vehicle of the embodiment of the present application, the shock absorber of its suspension system absorbs magnetic metal through the magnetic attraction part to reduce the flow of magnetic metal in the medium, affecting the damping and damaging internal parts, avoiding the wear problem of magnetic metal on the internal parts of the shock absorber, reducing the risk of damage to the internal parts of the shock absorber, and improving the stability and service life of the shock absorber.

[0030] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a cross-sectional schematic diagram of a shock absorber according to an embodiment of the present application;

[0032] Figure 2 is a cross-sectional schematic diagram of a damping adjustment assembly according to an embodiment of the present application;

[0033] Figure 3 is a cross-sectional schematic diagram of a shock absorber in a compressed state according to an embodiment of the present application;

[0034] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle;

[0035] Figure 5 is a cross-sectional schematic diagram of a shock absorber in a restored state according to an embodiment of the present application;

[0036] Figure 6 yes Figure 5 A partial enlarged view of point B in the middle;

[0037] Figure 7 is a three-dimensional schematic diagram of a damping adjustment assembly according to an embodiment of the present application;

[0038] Figure 8 is a schematic cross-sectional view of a magnetic filter according to an embodiment of the present application;

[0039] Figure 9 is a three-dimensional schematic diagram of a magnetic filter according to an embodiment of the present application from another perspective;

[0040] Figure 10is a three-dimensional schematic diagram of a magnetic attraction portion according to an embodiment of the present application;

[0041] Figure 11 is a top view of a filter portion according to an embodiment of the present application;

[0042] Figure 12 is a schematic diagram of a suspension system according to an embodiment of the present application;

[0043] Figure 13 is a schematic diagram of a vehicle according to an embodiment of the present application.

[0044] Reference numerals:

[0045] Vehicle 1000, suspension system 100, shock absorber 10, storage cylinder 1, working cylinder 2, first chamber 31, second chamber 32, damping adjustment assembly 4, magnetic filter 41, magnetic part 411, inner hole wall 4111, filter part 412, filter part body 4121, filter part isolation wall 4122, filter mounting hole 4123, isolation groove 413, valve body 42, first channel 421, second channel 422, first valve plate 43, first valve hole 431, second valve plate 44, elastic member 45, bolt 46, nut 47, nut body 471, nut flange 472, piston 51, piston rod 52, base 6, guide 7, seal 8. DETAILED DESCRIPTION

[0046] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0047] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0048] The following combination Figures 1-13 A shock absorber 10 , a suspension system 100 including the shock absorber 10 , and a vehicle 1000 including the suspension system 100 according to an embodiment of the present application will be described in detail.

[0049] See Figure 1 、 Figure 2 、 Figure 8As shown, the shock absorber 10 according to the embodiment of the present application includes a first chamber 31, a second chamber 32, a piston 51 and a damping adjustment assembly 4. The first chamber 31 and the second chamber 32 are both used to accommodate a medium. The piston 51 is movably disposed in the second chamber 32. The first chamber 31 and the second chamber 32 are selectively connected or isolated by the damping adjustment assembly 4. The damping adjustment assembly 4 includes a magnetic filter 41. The magnetic filter 41 includes a magnetic portion 411. The magnetic portion 411 is used to magnetically attract magnetic metal in the medium flowing through the magnetic portion 411. Specifically, when the first chamber 31 and the second chamber 32 are connected through the damping adjustment assembly 4, the medium in the first chamber 31 and the second chamber 32 can flow between each other; when the first chamber 31 and the second chamber 32 are isolated by the damping adjustment assembly 4, the medium in the first chamber 31 and the second chamber 32 cannot flow between each other. The magnetic attraction portion 411 can effectively absorb magnetic metal generated by the medium flowing in the first chamber 31 and the second chamber 32 , thereby reducing damage to various components in the shock absorber 10 caused by the magnetic metal and improving the stability and service life of the shock absorber 10 .

[0050] Optionally, the medium flowing in the first chamber 31 and the second chamber 32 may be oil, air or other flowable media.

[0051] In related technologies, when a shock absorber is operating, impurities such as magnetic metals may be present in the medium. These impurities primarily originate from indelible burrs, flash, and weld scale on components, which can be deposited into the shock absorber through prolonged oil impact. These impurities can circulate within the various chambers of the shock absorber, causing varying degrees of wear on various components and affecting its proper operation.

[0052] According to the shock absorber 10 of the embodiment of the present application, the magnetic metal is adsorbed by the magnetic attraction portion 411 to reduce the flow of the magnetic metal in the medium, which affects the damping and damages the internal parts, thereby avoiding the wear of the internal parts of the shock absorber 10 by the magnetic metal, reducing the risk of damage to the internal parts of the shock absorber 10, and improving the stability and service life of the shock absorber 10.

[0053] In some embodiments of the present application, see Figure 1 、 Figure 2 As shown, the shock absorber 10 also includes a storage cylinder 1 and a working cylinder 2. The working cylinder 2 is sleeved in the storage cylinder 1. A first chamber 31 is formed between the outer wall of the working cylinder 2 and the inner wall of the storage cylinder 1. A second chamber 32 is formed in the working cylinder 2. The damping adjustment component 4 is installed at the same end of the storage cylinder 1 and the working cylinder 2. Figure 1As shown, the damping adjustment assembly 4 is installed at the lower ends of the storage cylinder 1 and the working cylinder 2. By arranging the working cylinder 2 in the storage cylinder 1, the structure of the shock absorber 10 is made compact, which is beneficial to saving installation space and enables the shock absorber 10 to be more flexibly used in various space-constrained occasions.

[0054] In some embodiments of the present application, see Figure 1 、 Figure 2 As shown, the damping adjustment assembly 4 further includes a valve body 42, a magnetic attraction portion 411 is mounted on the side of the valve body 42 facing the second chamber 32, and the valve body 42 is provided with at least one channel connecting the first chamber 31 and the second chamber 32. Specifically, referring to Figure 2 The magnetic attraction portion 411 is installed on the upper side of the valve body 42. The valve body 42 is provided with at least one channel connecting the first chamber 31 and the second chamber 32, so that the medium can flow between the first chamber 31 and the second chamber 32 through the channel in the valve body 42, and the magnetic attraction portion 411 is convenient for adsorbing the magnetic metal in the medium flowing through the valve body 42, thereby reducing the damage of the magnetic metal to the various components in the shock absorber 10 and improving the stability and service life of the shock absorber 10.

[0055] In some embodiments of the present application, see Figures 1-6 As shown, the valve body 42 is provided with a first channel 421 and a second channel 422. When the piston 51 approaches the damping adjustment assembly 4, the first channel 421 is closed and the second channel 422 is opened, and the medium in the second chamber 32 is suitable for reaching the side of the valve body 42 away from the magnetic attraction portion 411 through the second channel 422; when the piston 51 is away from the damping adjustment assembly 4, the second channel 422 is closed and the first channel 421 is opened, and the medium on the side of the valve body 42 away from the magnetic attraction portion 411 is suitable for reaching the magnetic attraction portion 411 through the first channel 421.

[0056] Specifically, the piston 51 is a rotating body, and the piston 51 reciprocates along the axial direction of the piston 51 in the second chamber 32. Figure 3 、 Figure 4 As shown, when the piston 51 approaches the damping adjustment assembly 4, that is, when the piston 51 moves downward, the medium pressure in the second chamber 32 increases, and the medium flows from the second chamber 32 to the first chamber 31. Figure 5 、 Figure 6 As shown, when piston 51 moves away from damping adjustment assembly 4, that is, when piston 51 moves upward, the medium pressure in second chamber 32 decreases, and the medium flows from first chamber 31 into second chamber 32. Thus, through this automatic adjustment mechanism, shock absorber 10 can more accurately respond to vibrations of varying frequencies and amplitudes. In the event of high vibration, shock absorber 10 can provide greater damping, effectively absorbing and dissipating energy. In the event of low vibration, damping is reduced to avoid excessive vibration suppression, thereby improving overall vibration reduction efficiency.

[0057] In some embodiments of the present application, see Figure 1 、 Figure 2 、 Figure 8 As shown, the magnetic filter 41 also includes a filter portion 412, which is fixedly connected to the magnetic portion 411. The filter portion 412 is used to filter impurities in the medium flowing through the filter portion 412. Specifically, the filter portion 412 can block impurities with larger particles outside the working cylinder 2, thereby achieving a filtering effect, reducing the damage caused by impurities to various components in the shock absorber 10 (such as the working cylinder 2 or other components), and improving the stability and service life of the shock absorber 10. The magnetic filter 41 is provided with a magnetic portion 411 and a filter portion 412, and the two work together to achieve a better filtering effect, reduce the damage caused by impurities to the working cylinder 2 or other components, and improve the stability and service life of the shock absorber 10.

[0058] It should be noted that the properties of the above-mentioned impurities may include at least one of magnetic impurities and non-magnetic impurities, and the form of the impurities may be metal debris, particulate matter, etc.

[0059] In some embodiments of the present application, see Figure 1 、 Figure 2 、 Figure 8 As shown, an isolation slot 413 is formed at the connection between the filter portion 412 and the magnetic portion 411. The isolation slot 413 is open in a direction away from the second chamber 32. When the first channel 421 is open, the opening of the isolation slot 413 communicates with the first channel 421. As a result, magnetic metals among impurities flowing through the magnetic portion 411 are attracted by the magnetic portion 411 and isolated in the isolation slot 413, thereby improving the adsorption capacity of the magnetic portion 411.

[0060] In some embodiments of the present application, see Figures 1-6 、 Figure 8 As shown, the filter portion 412 includes a filter portion body 4121 and a filter portion partition wall 4122. The filter portion body 4121 is fixedly connected to the magnetic portion 411, and the filter portion partition wall 4122 is connected to the filter portion body 4121. The filter portion partition wall 4122 extends in a direction away from the second chamber 32, as shown in FIG. Figure 8 As shown, the filter portion isolation wall 4122 extends obliquely downward. The isolation groove 413 is formed between the filter portion isolation wall 4122 and the inner hole wall 4111 of the magnetic portion 411. By providing the filter portion isolation wall 4122 and the filter portion body 4121, the flow path of the medium can be optimized, thereby improving the filtration efficiency. The isolation groove 4122 is formed between the filter portion isolation wall 4122 and the inner hole wall 4111 of the magnetic portion 411. When the magnetic metal flowing through the magnetic portion 411 is adsorbed by the magnetic portion 411, it will be isolated in the isolation groove 413, thereby improving the adsorption capacity of the magnetic portion 411.

[0061] In some embodiments of the present application, see Figure 2 、 Figure 4 、 Figure 6 As shown, the angle α between the filter partition wall 4122 and the inner hole wall 4111 of the magnetic portion 411 ranges from 10° to 30°, i.e., 10°≤α≤30°. Thus, the range of the angle α between the filter partition wall 4122 and the inner hole wall 4111 of the magnetic portion 411 determines the size of the accommodation space of the isolation groove 413, ensuring that the accommodation space of the isolation groove 413 is neither too small, causing impurities attracted by the magnetic portion 411 to overflow, nor too large, causing increased damping of the medium passing through the magnetic portion 411, thereby affecting the vibration reduction effect of the shock absorber 10. This ensures that the isolation groove 413 has a good filtering effect on impurities without affecting the flow of oil, effectively intercepting impurities.

[0062] Optionally, the angle α between the filter portion isolation wall 4122 and the inner hole wall 4111 of the magnetic attraction portion 411 can be 10°, 20°, 30°, or any other value greater than 10° and less than 30°.

[0063] In some embodiments of the present application, see Figure 1 、 Figure 2 As shown, the filter unit 412 includes a filter screen having a plurality of filter holes. Specifically, the filter unit 412 filters the medium flowing through the filter unit 412, especially particles with a diameter larger than the filter hole diameter. The plurality of filter holes form a honeycomb structure, thereby improving the filtration efficiency of the filter unit 412.

[0064] Optionally, the filter holes of the filter portion 412 may be circular holes, square holes, or any other shapes that meet design requirements, which will not be described in detail here.

[0065] In some embodiments of the present application, see Figure 1 、 Figure 2 As shown, the roughness of the surface of the filter mesh facing away from the second chamber 32 is greater than the roughness of the surface of the filter mesh facing the second chamber 32. Figure 2 As shown, the roughness of the filter's lower surface is greater than that of its upper surface. This helps better trap impurities and enhance filtration efficiency when the medium flows from the lower surface into the second chamber 32. Meanwhile, the lower roughness of the upper surface helps reduce resistance to medium flow and maintain a smooth filtration process.

[0066] In some embodiments of the present application, see Figure 1 、 Figure 2As shown, the filter screen has a first groove on its surface for depositing impurities. This design provides a space for impurities to settle, helping to further trap and collect impurities in the medium. This not only improves filtration efficiency but also extends the life of the filter screen, as impurities are effectively trapped in the first groove, reducing the risk of filter clogging.

[0067] In some embodiments of the present application, see Figure 1 、 Figure 2 As shown, the magnetic attraction portion 411 is constructed as a mesh structure with multiple filter holes. Specifically, the mesh structure design enables the magnetic attraction portion 411 to not only have a magnetic attraction function, but also a certain degree of filtering ability. The filter holes allow the medium to pass through while intercepting larger impurities, increasing the overall filtering efficiency of the magnetic attraction portion 411 and helping to maintain the cleanliness of the medium.

[0068] Optionally, the filtering holes of the magnetic attraction portion 411 may be circular holes, square holes, or any other shapes that meet design requirements, which will not be described here one by one.

[0069] In some embodiments of the present application, see Figure 1 、 Figure 2 As shown, the roughness of the inner wall 4111 of the magnetic portion 411 is greater than the roughness of the outer wall of the magnetic portion 411. This helps better trap impurities when the medium passes through the inner wall 4111 of the magnetic portion 411, improving the filtration effect. At the same time, the outer wall of the magnetic portion 411 maintains a relatively low roughness, which helps reduce resistance to the medium flow and maintain a smooth filtration process.

[0070] In some embodiments of the present application, see Figure 1 、 Figure 2 As shown, the surface of the magnetic attraction portion 411 has a second groove for depositing impurities. The second groove of the magnetic attraction portion 411 provides a space for impurities to settle. This helps to further collect impurities in the medium, especially those magnetic metals attracted by the magnetic attraction portion 411. By increasing the deposition space, the direct impact of impurities on the surface of the magnetic attraction portion can be reduced, extending its service life and improving the filtering effect.

[0071] In some embodiments of the present application, see Figure 2 、 Figures 8-10As shown, the magnetic attraction portion 411 is an annular structure, and the filter portion 412 is located at one end of the magnetic attraction portion 411 close to the second chamber 32. For example, the filter portion 412 is located at the upper end of the magnetic attraction portion 411. Thus, the annular structure of the magnetic attraction portion 411 can provide a more uniform magnetic field distribution, which helps to increase the adsorption area and adsorption force of the magnetic attraction portion 411, improve the magnetic attraction stability of the magnetic attraction portion 411, and thus improve the working efficiency of the magnetic filter 41 in magnetically adsorbing impurities. Providing the filter portion 412 at one end of the magnetic attraction portion 411 close to the second chamber 32 can ensure that the magnetic attraction portion 411 and the filter portion 412 can cooperate with each other, and the magnetic attraction portion 411 can promptly adsorb impurities blocked by the filter portion 412, thereby improving the filtration efficiency of the damping adjustment component 4, effectively avoiding the flow of impurities in the medium, and reducing damage to internal components of the shock absorber 10.

[0072] In some embodiments of the present application, see Figure 1 、 Figure 2 As shown, the magnetic portion 411 is located on the periphery of the filter portion 412. As a result, the structure of the magnetic filter 41 is more compact, and can adapt to different media types and impurity contents, thereby improving the flexibility and adaptability of the magnetic filter 41.

[0073] In some embodiments of the present application, the filter portion 412 is installed on the magnetic portion 411 ; or, the filter portion 412 and the magnetic portion 411 are an integral part.

[0074] In some embodiments, as Figures 8-11 As shown, the filter portion 412 is mounted on the magnetic portion 411. Thus, by designing the filter portion 412 and the magnetic portion 411 as detachable components, the filter portion 412 or the magnetic portion 411 of different types or specifications can be easily adjusted or replaced according to actual needs to adapt to different situations of the shock absorber 10.

[0075] Optionally, the filter portion 412 and the magnetic portion 411 may be installed by welding, interference fit, or other connection methods.

[0076] In some embodiments not shown in the figures, the filter portion 412 is integrally formed with the magnetic portion 411. This integrated design strengthens the connection between the filter portion 412 and the magnetic portion 411, reducing the risk of loosening or damage due to long-term use or external forces. It also simplifies the installation process of the magnetic portion 411 and the filter portion 412, avoiding risks associated with the installation process and helping to reduce the installation time of the shock absorber 10.

[0077] In some embodiments of the present application, see Figure 1 、 Figures 8-11As shown, the filter section 412 includes a filter screen having a plurality of filter holes. The shock absorber 10 also includes a piston rod 52, which is connected to the end of the piston 51 facing away from the damping adjustment assembly 4. Specifically, the piston rod 52 is connected to the upper end of the piston 51. The sum of the hole areas of the filter holes is greater than the cross-sectional area of ​​the piston rod 52. Specifically, the filter section 412 filters the medium flowing through the filter section 412, especially particles with a particle size greater than the diameter of the filter holes. The multiple filter holes form a honeycomb structure, which improves the filtering efficiency of the filter section 412. The sum of the hole areas of the filter holes is greater than the cross-sectional area of ​​the piston rod 52, so that the filter screen only plays a filtering role without affecting the magnitude of the damping force, thereby reducing the influence of the filter section 412 on the vibration reduction effect of the shock absorber 10.

[0078] It should be noted that in the above “the sum of the areas of the filter holes is greater than the cross-sectional area of ​​the piston rod 52 ”, the cross-sectional area of ​​the piston rod 52 is the cross-sectional area corresponding to the diameter d1 of the piston rod 52 .

[0079] In some embodiments, the diameter d1 of the piston rod 52 is 18 mm, and the cross-sectional area of ​​the piston rod 52 is approximately 255 mm. 3 The total area of ​​the filter holes in the filter is 468 mm 3 , the sum of the pore areas of the filter holes is greater than the cross-sectional area of ​​the piston rod 52. Thus, under the premise of meeting the design requirements, the filtration efficiency of the damping adjustment assembly 4 is increased by increasing the number of filter holes and the pore areas of the filter holes.

[0080] In some embodiments of the present application, see Figures 1-6 As shown, the first channel 421 and the second channel 422 are both connected to the axial ends of the valve body 42. The damping adjustment assembly 4 also includes a first valve disc 43, a second valve disc 44 and an elastic member 45. The first valve disc 43 is arranged on the side of the valve body 42 facing the magnetic filter 41. The first valve disc 43 can block or open the first channel 421. The second valve disc 44 is arranged on the side of the valve body 42 facing away from the magnetic filter 41. The second valve disc 44 can block or open the second channel 422. The elastic member 45 is used to apply an elastic force to the first valve disc 43 to move the first valve disc 43 in the direction of the second valve disc 44.

[0081] Specifically, a first valve disc 43 is positioned above the valve body 42, and a second valve disc 44 is positioned below the valve body 42. An elastic member 45 applies an elastic force to the first valve disc 43, causing it to move downward. By controlling the blocking or opening of the first channel 421 with the first valve disc 43 and the blocking or opening of the second channel 422 with the second valve disc 44, precise control of the medium flow rate is achieved, thereby adjusting the damping force acting on the medium during its flow. The elastic member 45 applies an elastic force toward the second valve disc 44 on the first valve disc 43, helping to maintain its stable position and preventing unintended movement of the first valve disc 43 due to fluctuations in medium pressure.

[0082] Optionally, the elastic member 45 may be a spring, a retaining ring, an elastic bushing or other elastic sensitive elements. Figure 2 、 Figure 4 、 Figure 6 In the example, the elastic member 45 is a spring.

[0083] In some embodiments, the valve plate is blocked or the corresponding channel is opened by the impact of the medium, taking oil as an example. Figure 3 、 Figure 4 As shown, when the piston 51 approaches the damping adjustment assembly 4, the oil pressure in the second chamber 32 increases, and the oil enters the first chamber 31 from the second chamber 32. At this time, the shock absorber 10 is in a compressed state. The first valve disc 43 is fitted into the valve body 42 under the action of the elastic force of the elastic member 45 and the punching pressure of the oil, so that the first channel 421 is closed. The first valve disc 43 has a first valve hole 431 connected to the second channel 422. The oil in the second chamber 32 flows through the filter portion 412 and the first valve hole 431 on the first valve disc 43 through the path L1 and enters the second channel 422. At this time, the oil generates pressure on the second valve disc 44, causing the second valve disc 44 to open the second channel 422. As a result, the oil enters the first chamber 31 from the second chamber 32 through the second channel 422.

[0084] See Figure 5 、 Figure 6 As shown, when the piston 51 moves away from the damping adjustment assembly 4, the oil pressure in the second chamber 32 decreases, and the oil enters the second chamber 32 from the first chamber 31. At this time, the shock absorber is in a restored state, and the oil in the first chamber 31 reaches the damping adjustment assembly 4. Since the lower end of the first channel 421 is open, the oil will directly enter the first channel 421. The second valve plate 44 closes the second channel 422 under the action of the oil pressure, and the first valve plate 43 opens the first channel 421 under the action of the oil pressure in the first channel 421. The oil flows out from the upper end of the first channel 421 and flows through the filter part 412 through the path L3 before entering the second chamber 32, or the oil flows out from the upper end of the first channel 421 and flows through the magnetic suction part 411 and the filter part 412 through the path L4 before entering the second chamber 32.

[0085] The flow rate of the oil affects the hydraulic pressure applied to the first valve plate 43 and the second valve plate 44. By controlling the hydraulic pressure, the opening of the first valve plate 43 and the second valve plate 44 can be controlled, thereby controlling the flow rate of the oil between the first chamber 31 and the second chamber 32, so that the shock absorber 10 can adapt to a wider range of application scenarios.

[0086] In an embodiment not shown in the figures, the opening or closing of the first channel 421 and the second channel 422 can also be achieved through electrical control.

[0087] In some embodiments of the present application, see Figure 2 As shown, the first valve disc 43 is provided with a first valve hole 431, which penetrates the first valve disc 43 along its thickness and communicates with the second channel 422. Thus, when the first valve disc 43 blocks the first channel 421, the medium can flow through the first valve hole 431 into the second channel 422 and into the first chamber 31. This prevents the first valve disc 43 from simultaneously blocking the first channel 421 and the second channel 422, preventing the medium from flowing between the first and second chambers 31, 32.

[0088] Specifically, when the piston 51 is close to the damping adjustment assembly 4, as shown in FIG. Figure 3 、 Figure 4 As shown, when the first valve plate 43 blocks the first channel 421, the medium enters the damping adjustment component 4 from the second chamber 32 through the path L2. The isolation groove 413 can effectively block the impact of the medium and ensure that the impurities in the isolation groove 413 will not return to the first chamber 31, thereby protecting the first chamber 31. When the piston 51 is away from the damping adjustment component 4, as shown in FIG. Figure 5 、 Figure 6 As shown, the first valve plate 43 opens the first channel 421, and impurities in the medium flowing from the first chamber 31 to the second chamber 32 will be adsorbed by the magnetic attraction portion 411 and isolated in the isolation groove 413, thereby preventing impurities from entering the second chamber 32 and protecting the second chamber 32.

[0089] In some embodiments of the present application, see Figure 2 、 Figure 7-Figure 9As shown, the magnetic filter 41 further includes a filter portion 412, which is fixedly connected to the magnetic portion 411 and is used to filter impurities in the medium flowing through the filter portion 412. The damping adjustment assembly 4 further includes a bolt 46 and a nut 47. The bolt 46 passes through the second valve disc 44, the valve body 42, the first valve disc 43, and the magnetic filter 41. The elastic member 45 is located between the first valve disc 43 and the magnetic filter 41. The nut 47 engages with the bolt 46 and includes a nut body 471 and a nut flange 472. The filter portion 412 has a filter mounting hole 4123. The nut body 471 passes through the filter mounting hole 4123. The nut flange 472 is located on the side of the filter portion 412 facing away from the first valve disc 43. The outer diameter of the nut flange 472 is larger than the aperture of the filter mounting hole 4123. In other words, the combination of bolt 46 and nut 47 ensures a secure connection between the second valve disc 44, valve body 42, first valve disc 43, and magnetic filter 41 in the damping adjustment assembly 4. This connection method not only provides mechanical strength to the damping adjustment assembly 4, but also allows the compression force of the elastic member 45 to be adjusted by adjusting the tightening degree of bolt 46, thereby adjusting the position of the first valve disc 43 to adapt to different medium flow rate conditions. The design of the nut body 471 and nut flange 472 enhances the connection stability of the nut 47, allowing the nut 47 to cooperate with the filter portion 412 to ensure that the magnetic filter 41 is securely installed through the filter mounting hole 4123. The nut flange 472 acts as a stop and limiter for the magnetic filter 41, preventing the magnetic filter 41 from loosening or falling off, thereby ensuring the continuity and reliability of the magnetic filter 41.

[0090] In some embodiments of the present application, see Figure 1 、 Figure 2 As shown, the shock absorber 10 further includes a base 6, a guide 7, and a seal 8. The base 6 is located on the side of the damping adjustment assembly 4 away from the second chamber 32. For example, the base 6 is located below the damping adjustment assembly 4 and is connected to the lower end of the storage cylinder 1. The guide 7 is mounted on the outer wall of the piston rod 52, with a portion of the outer wall of the guide 7 abutting the inner wall of the storage cylinder 1. The seal 8 is mounted on the outer wall of the piston rod 52, with the outer wall of the seal 8 abutting the inner wall of the storage cylinder 1. The seal 8 can be connected to the end of the guide 7 away from the piston 51, or the seal 8 and guide 7 can be separated. Specifically, the base 6 provides necessary support for the shock absorber 10 and serves to secure the shock absorber 10. The guide 7 serves as an axial limit for the piston rod 52, and can guide the piston rod 52 to reciprocate smoothly and accurately along the axial direction of the working cylinder 2. The seal 8 seals the shock absorber 10 to prevent the medium from flowing out of the shock absorber 10, and at the same time prevents external impurities, dust, etc. from entering the interior of the shock absorber 10, thereby ensuring the normal operation of the shock absorber 10.

[0091] Optionally, the seal 8 may be an oil seal, an O-ring, etc., for example Figure 1 As shown, the sealing member 8 is an oil seal.

[0092] Optionally, the material of the seal 8 may be a rubber seal, a plastic seal, etc.

[0093] In some embodiments, the base 6 and the storage cylinder 1 form a first chamber 31, the guide 7, the working cylinder 2, the damping adjustment assembly 4 and the piston rod 52 form a second chamber 32, the second chamber 32 is radially inside the first chamber 31, the seal 8 blocks the upper port of the first chamber 31, and the piston 51 can move up and down in the working cylinder 2.

[0094] Optionally, the base 6 and the storage cylinder 1 may be connected by welding, bolts, rivets or other connection methods.

[0095] See Figure 12 As shown, a suspension system 100 according to another embodiment of the present application includes the shock absorber 10 described above.

[0096] According to the suspension system 100 of the embodiment of the present application, its shock absorber 10 absorbs magnetic metal through the magnetic attraction portion 411 to reduce the flow of magnetic metal in the medium, affecting the damping and damaging internal parts, avoiding the problem of wear of the internal parts of the shock absorber 10 by the magnetic metal, reducing the risk of damage to the internal parts of the shock absorber 10, and improving the stability and service life of the shock absorber 10.

[0097] See Figure 13 As shown, a vehicle 1000 according to another embodiment of the present application includes the suspension system 100 described above.

[0098] According to the vehicle 1000 of the embodiment of the present application, the shock absorber 10 of its suspension system 100 absorbs magnetic metal through the magnetic attraction portion 411 to reduce the flow of magnetic metal in the medium, affecting the damping and damaging internal parts, avoiding the problem of wear of the internal parts of the shock absorber 10 by the magnetic metal, reducing the risk of damage to the internal parts of the shock absorber 10, and improving the stability and service life of the shock absorber 10.

[0099] In the description of this application, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0100] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0101] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0102] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A vibration damper (10), characterized in that: include: A first chamber (31) and a second chamber (32), wherein the first chamber (31) and the second chamber (32) are both used to accommodate a medium; a piston (51), the piston (51) being movably disposed in the second chamber (32); A damping adjustment component (4), wherein the first chamber (31) and the second chamber (32) are selectively connected or isolated through the damping adjustment component (4), and the damping adjustment component (4) includes a magnetic filter (41), and the magnetic filter (41) includes a magnetic attraction portion (411), and the magnetic attraction portion (411) is used to magnetically attract magnetic metal in a medium flowing through the magnetic attraction portion (411).

2. The vibration absorber (10) according to claim 1, characterized in that The damping adjustment component (4) further comprises: The valve body (42) is provided with a magnetic attraction portion (411) mounted on a side of the valve body (42) facing the second chamber (32), and the valve body (42) is provided with at least one channel connecting the first chamber (31) and the second chamber (32).

3. The vibration absorber (10) according to claim 2, characterized in that The valve body (42) is provided with a first channel (421) and a second channel (422). When the piston (51) approaches the damping adjustment component (4), the first channel (421) is closed and the second channel (422) is opened, and the medium in the second chamber (32) is suitable for reaching the side of the valve body (42) away from the magnetic attraction part (411) through the second channel (422); when the piston (51) moves away from the damping adjustment component (4), the second channel (422) is closed and the first channel (421) is opened, and the medium on the side of the valve body (42) away from the magnetic attraction part (411) is suitable for reaching the magnetic attraction part (411) through the first channel (421).

4. The vibration absorber (10) according to claim 3, characterized in that The magnetic filter (41) further comprises a filter portion (412), wherein the filter portion (412) is fixedly connected to the magnetic portion (411), and the filter portion (412) is used to filter impurities in a medium flowing through the filter portion (412).

5. The vibration absorber (10) according to claim 4, characterized in that An isolation groove (413) is formed at the connection between the filter portion (412) and the magnetic attraction portion (411). The isolation groove (413) has an opening in a direction away from the second chamber (32). When the first channel (421) is opened, the opening of the isolation groove (413) is connected to the first channel (421).

6. The vibration absorber (10) according to claim 5, characterized in that The filter unit (412) includes: A filter body (4121), wherein the filter body (4121) is fixedly connected to the magnetic attraction portion (411); and A filter portion isolation wall (4122), the filter portion isolation wall (4122) is connected to the filter portion body (4121), the filter portion isolation wall (4122) extends in a direction away from the second chamber (32), and the isolation groove (413) is formed between the filter portion isolation wall (4122) and the inner hole wall (4111) of the magnetic attraction portion (411).

7. The vibration absorber (10) according to claim 6, characterized in that The angle between the filter portion isolation wall (4122) and the inner hole wall (4111) of the magnetic attraction portion (411) ranges from 10° to 30°.

8. The vibration absorber (10) according to claim 4, characterized in that The filter portion (412) includes a filter screen having a plurality of filter holes.

9. The vibration absorber (10) according to claim 8, characterized in that The roughness of the surface of the filter screen facing away from the second chamber (32) is greater than the roughness of the surface of the filter screen facing the second chamber (32).

10. The vibration absorber (10) according to claim 8, characterized in that The surface of the filter screen has first grooves for depositing impurities.

11. The vibration absorber (10) according to claim 1, characterized in that The magnetic attraction portion (411) is constructed as a mesh structure, and the magnetic attraction portion (411) has a plurality of filtering holes.

12. The vibration absorber (10) according to claim 1, characterized in that The surface of the magnetic attraction portion (411) has a second groove for depositing impurities.

13. The vibration absorber (10) according to any one of claims 4 to 10, characterized in that The magnetic attraction portion (411) is an annular structure, and the filter portion (412) is located at one end of the magnetic attraction portion (411) close to the second chamber (32).

14. The vibration absorber (10) according to claim 13, characterized in that The magnetic attraction portion (411) is located on the periphery of the filter portion (412).

15. The vibration absorber (10) according to any one of claims 4 to 10, characterized in that The filter portion (412) is mounted on the magnetic portion (411); or, the filter portion (412) and the magnetic portion (411) are an integral part.

16. The vibration absorber (10) according to any one of claims 4 to 10, characterized in that The filter portion (412) includes a filter screen having a plurality of filter holes. The shock absorber (10) further includes a piston rod (52) connected to an end of the piston (51) facing away from the damping adjustment assembly (4). The sum of the hole areas of the filter holes is greater than the cross-sectional area of ​​the piston rod (52).

17. The vibration absorber (10) according to claim 3, characterized in that The first channel (421) and the second channel (422) are both connected to the axial ends of the valve body (42), and the damping adjustment component (4) further includes: a first valve disc (43), the first valve disc (43) being arranged on a side of the valve body (42) facing the magnetic filter (41), and the first valve disc (43) being capable of blocking or opening the first channel (421); a second valve disc (44), the second valve disc (44) being arranged on a side of the valve body (42) facing away from the magnetic filter (41), and the second valve disc (44) being capable of blocking or opening the second channel (422); An elastic member (45) is used to apply an elastic force to the first valve disc (43) so as to move the first valve disc (43) toward the direction where the second valve disc (44) is located.

18. The vibration absorber (10) according to claim 17, characterized in that A first valve hole (431) is provided on the first valve plate (43), the first valve hole (431) passes through the first valve plate (43) along the thickness direction of the first valve plate (43), and the first valve hole (431) is communicated with the second channel (422).

19. The vibration absorber (10) according to claim 17, characterized in that The magnetic filter (41) further comprises a filter portion (412), wherein the filter portion (412) is fixedly connected to the magnetic portion (411), and the filter portion (412) is used to filter impurities in a medium flowing through the filter portion (412). The damping adjustment component (4) further comprises: a bolt (46), wherein the bolt (46) passes through the second valve disc (44), the valve body (42), the first valve disc (43) and the magnetic filter (41), and the elastic member (45) is located between the first valve disc (43) and the magnetic filter (41); A nut (47), wherein the nut (47) cooperates with the bolt (46), the nut (47) comprises a nut body (471) and a nut flange (472), the filter portion (412) has a filter mounting hole (4123), the nut body (471) passes through the filter mounting hole (4123), the nut flange (472) is located on a side of the filter portion (412) away from the first valve plate (43), and the outer diameter of the nut flange (472) is larger than the aperture of the filter mounting hole (4123).

20. A suspension system (100), characterized in that: The invention comprises the vibration absorber (10) according to any one of claims 1 to 19.

21. A vehicle (1000), characterized in that Comprising the suspension system (100) of claim 20.

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