Shock absorber and vehicle

Abstract

The invention discloses a shock absorber and a vehicle. The shock absorber comprises a first cylinder body, a second cylinder body and a third cylinder body, the first cylinder body is sleeved with the second cylinder body, and a first cavity is formed by the second cylinder body and the first cylinder body. The third cylinder body is located in the first cylinder body and forms a second cavity with the first cylinder body; the first cylinder body comprises a first opening which is located in the side wall of the first cylinder body and penetrates through the side wall, and the first cavity communicates with the second cavity through the first opening. The second cylinder body comprises a second opening which is formed in the side wall of the second cylinder body and penetrates through the side wall; the shock absorber further comprises a plurality of damping mechanisms, each damping mechanism comprises a damping valve, a first opening and a second opening, and each damping valve comprises a liquid inlet end and a liquid outlet end. In each damping mechanism, the liquid inlet end of a damping valve communicates with the first opening, the liquid outlet end of the damping valve communicates with the second opening, and the damping valve is configured to adjust the resistance of fluid flowing from the first opening to the second opening. Therefore, the shock absorber can at least increase the damping adjusting range or adjusting precision of the shock absorber.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to a shock absorber and a vehicle. Background Art

[0002] During the driving of a vehicle, when passing through an uneven road surface, an elastic element (such as a spring) of the suspension system can filter out the unevenness of the road surface through its own elastic deformation, reducing the jolting of the vehicle; in this process, the suspension system vibrates due to the impact on the elastic element, and the shock absorber can suppress this vibration and accelerate the attenuation of the vibration of the suspension system, thereby improving the driving safety and smoothness of the vehicle.

[0003] Currently, the shock absorbers adopted by vehicles are widely the telescopic shock absorbers, which can play a damping role during both the compression and extension strokes of the piston. By using the relative movement between the piston and the working cylinder in the shock absorber and the flow of the hydraulic fluid in the shock absorber, the vibration energy is absorbed, thereby playing a role in suppressing vibration and accelerating the attenuation of vibration. Summary of the Invention

[0004] Embodiments of the present disclosure provide a shock absorber and a vehicle. The shock absorber includes a first cylinder, a second cylinder, and a third cylinder; the second cylinder is sleeved outside the first cylinder and forms a first cavity between the first cylinder and the second cylinder with the first cylinder; the third cylinder is located inside the first cylinder and forms a second cavity between the first cylinder and the third cylinder with the first cylinder; the first cylinder includes a first opening located on the side wall of the first cylinder and penetrating the side wall, and the first opening communicates the first cavity and the second cavity; the second cylinder includes a second opening located on the side wall of the second cylinder and penetrating the side wall; the shock absorber further includes a plurality of damping mechanisms, each damping mechanism includes a damping valve, a first opening, and a second opening, and the damping valve includes an inlet end and an outlet end; in each damping mechanism, the inlet end of the damping valve communicates with the first opening, the outlet end of the damping valve communicates with the second opening, and the damping valve is configured to adjust the resistance of the fluid flowing from the first opening to the second opening. Thus, the shock absorber can adjust the damping of the shock absorber through a plurality of damping mechanisms, thereby at least increasing the damping adjustment range or adjustment accuracy of the shock absorber.

[0005] At least one embodiment of the present disclosure provides a shock absorber, which includes: a first cylinder body; a second cylinder body sleeved outside the first cylinder body, forming a first cavity between the first cylinder body and the second cylinder body; and a third cylinder body located inside the first cylinder body and forming a second cavity between the first cylinder body and the third cylinder body; the first cylinder body includes a first opening located on the side wall of the first cylinder body and penetrating the side wall, and the first opening communicates the first cavity and the second cavity; the second cylinder body includes a second opening located on the side wall of the second cylinder body and penetrating the side wall, and the shock absorber further includes a plurality of damping mechanisms, each of the damping mechanisms includes a damping valve, a first opening and a second opening, the damping valve includes an inlet end and an outlet end, in each of the damping mechanisms, the inlet end of the damping valve communicates with the first opening, the outlet end of the damping valve communicates with the second opening, and the damping valve is configured to adjust the resistance of the fluid flowing from the first opening to the second opening.

[0006] For example, in the shock absorber provided by an embodiment of the present disclosure, a third cavity is provided inside the third cylinder body, and the third cylinder body includes a third opening located on the side wall of the third cylinder body and penetrating the side wall, and the third opening communicates the third cavity and the second cavity.

[0007] For example, in the shock absorber provided by an embodiment of the present disclosure, the second cavity includes a plurality of sub-cavities arranged along the axial direction of the first cylinder body; a partition sealing assembly is arranged between adjacent two of the sub-cavities; the third cylinder body includes a plurality of the third openings arranged in one-to-one correspondence with the plurality of sub-cavities, each of the third openings communicates the third cavity with the corresponding sub-cavity, the plurality of first openings of the plurality of damping mechanisms are respectively arranged in one-to-one correspondence with the plurality of sub-cavities, and each of the damping mechanisms is configured to separately adjust the resistance of the fluid flowing from the sub-cavity to the first cavity.

[0008] For example, in the shock absorber provided by an embodiment of the present disclosure, the partition sealing assembly includes: a seal located between the first cylinder body and the third cylinder body; a movable limiting assembly sleeved on the third cylinder body and movable in the axial direction of the third cylinder body; a limiting groove located on the side of the third cylinder body facing the first cylinder body; and a blocking member, the movable limiting assembly is configured to limit the seal, and the blocking member is partially located in the limiting groove and is configured to block the movable limiting assembly.

[0009] For example, in the shock absorber provided in an embodiment of the present disclosure, the second cavity is a continuous cavity communicating with the third opening, and each part in the second cavity communicates with the third cavity through the first opening. The plurality of damping mechanisms are configured to jointly adjust the resistance of the fluid flowing from the second cavity to the first cavity.

[0010] For example, in the shock absorber provided in an embodiment of the present disclosure, the plurality of damping mechanisms include a first damping mechanism and a second damping mechanism, and the third opening is located on a side of the second damping mechanism away from the first damping mechanism in the axial direction of the first cylinder block.

[0011] For example, in the shock absorber provided in an embodiment of the present disclosure, the plurality of damping mechanisms are arranged at intervals along the circumferential direction of the first cylinder block.

[0012] For example, in the shock absorber provided in an embodiment of the present disclosure, a first end seal assembly and a second end seal assembly are arranged between the first cylinder block and the third cylinder block. The first end seal assembly is located at the first end of the first cylinder block, and the second end seal assembly is located at the second end of the first cylinder block to seal the second cavity. The first opening is located between the first end seal assembly and the second end seal assembly in the axial direction of the first cylinder block.

[0013] For example, in the shock absorber provided in an embodiment of the present disclosure, the plurality of damping mechanisms are arranged at intervals along the axial direction of the first cylinder block.

[0014] For example, in the shock absorber provided in an embodiment of the present disclosure, the damping valve further includes a valve housing. In each of the damping mechanisms, the valve housing is located on a side of the second cylinder block away from the first cylinder block.

[0015] For example, in the shock absorber provided in an embodiment of the present disclosure, in each of the damping mechanisms, the orthographic projection of the first opening on the second cylinder block is located within the second opening.

[0016] For example, in the shock absorber provided in an embodiment of the present disclosure, in each of the damping mechanisms, the first opening is connected to the liquid inlet end of the damping valve through a connecting member.

[0017] For example, in the shock absorber provided in an embodiment of the present disclosure, in each of the damping mechanisms, the second opening includes an intermediate region and a peripheral region. The liquid inlet end of the damping valve passes through the intermediate region and communicates with the first opening, and the liquid outlet end of the damping valve communicates with the peripheral region of the second opening.

[0018] For example, the shock absorber provided by an embodiment of the present disclosure further includes: a piston rod located in the third cavity and configured to reciprocate along the axial direction of the third cavity; a piston located at one end of the piston rod to divide the third cavity into two working chambers; an end cap sleeved on the piston rod to seal one end of the second cylinder and the third cylinder; and a compression valve located at one end of the third cylinder away from the end cap.

[0019] For example, in the shock absorber provided by an embodiment of the present disclosure, the plurality of damping mechanisms include a first damping mechanism and a second damping mechanism. The first damping mechanism is located at the end of the first cylinder close to the compression valve, and the second damping mechanism is located on the side of the first damping mechanism away from the compression valve.

[0020] At least one embodiment of the present disclosure further provides a vehicle, which includes the shock absorber described in any one of the above. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present disclosure and do not limit the present disclosure.

[0022] Figure 1 and Figure 2 is a working schematic diagram of a shock absorber;

[0023] Figure 3 is a schematic structural diagram of a shock absorber provided by an embodiment of the present disclosure;

[0024] Figure 4 is a schematic structural diagram of a sealing assembly provided by an embodiment of the present disclosure;

[0025] Figure 5 is a schematic structural diagram of another shock absorber provided by an embodiment of the present disclosure;

[0026] Figure 6 is a schematic diagram of a vehicle provided by an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0028] Unless otherwise defined, technical terms or scientific terms used in this disclosure shall have the ordinary meanings as understood by those of ordinary skill in the art to which this disclosure pertains. The terms "first", "second" and similar terms used in this disclosure do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "comprising" or "including" mean that the elements or items appearing before this word cover the elements or items listed after this word and their equivalents, without excluding other elements or items. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0029] Features such as "vertical", "parallel" and "same" used in this disclosure include the strict "vertical", "parallel", "same" and other features, as well as cases with certain errors such as "substantially vertical", "substantially parallel", "substantially same", etc., considering measurement and errors related to the measurement of a specific quantity (i.e., limitations of the measurement system), which means within the acceptable deviation range for a specific value determined by those of ordinary skill in the art. The "center" in the embodiments of this disclosure may include the position strictly located at the geometric center and the position of the approximate center within a small area around the geometric center. For example, "substantially" can mean within one or more standard deviations, or within 10% or 5% of the value.

[0030] Figure 1 and Figure 2 is a working schematic diagram of a shock absorber. As Figure 1 and Figure 2 shown, the shock absorber 10 includes a working cylinder 11, an intermediate cylinder 12 and an oil storage cylinder 13. A working chamber is provided in the working cylinder 11, and a piston 14 that can reciprocate in the working chamber is arranged in the working chamber; an intermediate chamber is formed between the intermediate cylinder 12 and the working cylinder 11, and an oil storage chamber is formed between the intermediate cylinder 12 and the oil storage cylinder 13; an opening is provided on the side wall of the working cylinder 11 to communicate the working chamber with the intermediate chamber, an opening is also provided on the side wall of the intermediate cylinder 12 to communicate the intermediate chamber with the oil storage chamber, and an opening is also provided on the side wall of the oil storage chamber 13 to connect the liquid inlet end of the damping valve 15 with the opening on the side wall of the intermediate cylinder 12, and the liquid outlet end of the damping valve 15 is connected to the opening on the side wall of the oil storage cylinder 13. The damping valve 15 is configured to adjust the resistance of the fluid from the intermediate chamber to the oil storage chamber.

[0031] As Figure 1 and Figure 2As shown, the shock absorber 10 further includes a compression valve 16 and an end cap (not shown). The compression valve 16 is located at one end of the working cylinder 11, and the end cap is located at the other end of the working cylinder 11 and sleeved on the piston rod of the piston 14. In the working chamber of the working cylinder 11, the piston 14 divides the working chamber into a lower oil chamber close to the compression valve 16 and an upper oil chamber far from the compression valve 16. It should be noted that the volumes of the upper oil chamber and the lower oil chamber will change with the movement of the piston. In addition, the upper and lower in the upper oil chamber and the lower oil chamber do not represent the positional relationship between the two oil chambers, but are only used to distinguish the upper oil chamber and the lower oil chamber.

[0032] As Figure 1 shown, during the compression stroke of the shock absorber 10, the piston 14 in the working cylinder 11 moves towards the compression valve 16 to compress the oil in the lower oil chamber. A part of the oil in the lower oil chamber flows through the one-way valve in the piston 14 into the upper oil chamber, and then flows from the upper oil chamber to the intermediate chamber through the opening on the side wall of the working cylinder 11, and then flows from the intermediate chamber to the oil storage chamber through the opening on the side wall of the intermediate cylinder 12 and the damping valve 15. At the same time, a part of the oil in the lower oil chamber directly flows into the oil storage chamber through the one-way valve in the compression valve 16. Therefore, the damping valve 15 and the compression valve 16 jointly generate damping in this process, and the damping valve 15 can adjust the magnitude of the resistance of the oil flowing from the intermediate chamber to the oil storage chamber by controlling the opening degree of the valve, so as to adjust the magnitude of the damping generated by it.

[0033] As Figure 2 shown, during the rebound stroke (i.e., the extension stroke) of the shock absorber 10, the piston 14 in the working cylinder 11 moves away from the compression valve 16 to compress the oil in the upper oil chamber. A part of the oil in the upper oil chamber flows from the upper oil chamber to the intermediate chamber through the opening on the side wall of the working cylinder 11, and then flows from the intermediate chamber to the oil storage chamber through the opening on the side wall of the intermediate cylinder 12 and the damping valve 15. At the same time, a part of the oil in the upper oil chamber flows through the one-way valve in the piston 14 into the lower oil chamber, and a part of the oil in the oil storage chamber flows through the one-way valve in the compression valve 16 into the lower oil chamber. Therefore, the damping valve 15 generates damping in this process, and the damping valve 15 can adjust the magnitude of the resistance of the oil flowing from the intermediate chamber to the oil storage chamber by controlling the opening degree of the valve, so as to adjust the magnitude of the damping generated by it.

[0034] Due to the fact that only one damping valve is provided, the above-mentioned shock absorber has the problem of a small damping adjustment range, and also due to the low adjustment accuracy of the damping valve. On the other hand, with the continuous improvement of people's pursuit of vehicle driving quality, vehicle manufacturers have put forward higher requirements for the damping adjustment range and adjustment accuracy of shock absorbers.

[0035] In this regard, an embodiment of the present disclosure provides a shock absorber. The shock absorber includes a first cylinder block, a second cylinder block, and a third cylinder block; the second cylinder block is sleeved outside the first cylinder block and forms a first cavity between the first cylinder block and the second cylinder block with the first cylinder block; the third cylinder block is located inside the first cylinder block and forms a second cavity between the first cylinder block and the third cylinder block with the first cylinder block; the first cylinder block includes a first opening located on the side wall of the first cylinder block and penetrating the side wall, and the first opening communicates the first cavity and the second cavity; the second cylinder block includes a second opening located on the side wall of the second cylinder block and penetrating the side wall; the shock absorber further includes a plurality of damping mechanisms, each damping mechanism includes a damping valve, a first opening, and a second opening, and the damping valve includes a liquid inlet end and a liquid outlet end; in each damping mechanism, the liquid inlet end of the damping valve is communicated with the first opening, the liquid outlet end of the damping valve is communicated with the second opening, and the damping valve is configured to adjust the resistance of the fluid flowing from the first opening to the second opening. Thus, the shock absorber can adjust the damping of the shock absorber through a plurality of damping mechanisms, thereby at least increasing the damping adjustment range or adjustment accuracy of the shock absorber.

[0036] An embodiment of the present disclosure further provides a vehicle including the above shock absorber. Thus, the vehicle can have better driving quality, safety, and comfort.

[0037] Next, the shock absorber and the vehicle provided by the embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0038] Figure 3 It is a schematic structural diagram of a shock absorber provided by an embodiment of the present disclosure. As Figure 3 shown, the shock absorber 100 includes a first cylinder block 110, a second cylinder block 120, and a third cylinder block 130; the second cylinder block 120 is sleeved outside the first cylinder block 110 and forms a first cavity 201 between the first cylinder block 110 and the second cylinder block 120 with the first cylinder block 110; the third cylinder block 130 is located inside the first cylinder block 110 and forms a second cavity 202 between the first cylinder block 110 and the third cylinder block 130 with the first cylinder block 110.

[0039] For example, the third cylinder block 130 can be a working cylinder, the first cylinder block 110 can be an intermediate cylinder, and the second cylinder block 120 can be an oil storage cylinder; at this time, the first cavity 201 can be an oil storage cavity, and the second cavity 202 can be an intermediate cavity.

[0040] For example, the first cylinder block 110, the second cylinder block 120, and the third cylinder block 130 can be coaxially arranged. The shapes of the first cylinder block 110, the second cylinder block 120, and the third cylinder block 130 can all be cylindrical.

[0041] As Figure 3As shown, the first cylinder block 110 includes a first opening 115 located on the side wall of the first cylinder block 110 and penetrating through the side wall. The first opening 115 communicates the first cavity 201 and the second cavity 202, that is, the fluid in the first cavity 201 can flow to the second cavity 202 through the first opening 115, or the fluid in the second cavity 202 can flow to the first cavity 201 through the first opening 115; the second cylinder block 120 includes a second opening 125 located on the side wall of the second cylinder block 120 and penetrating through the side wall.

[0042] As Figure 3 As shown, the shock absorber 100 further includes a plurality of damping mechanisms 140. Each damping mechanism 140 includes a corresponding damping valve 145, a first opening 115 and a second opening 125; the damping valve 145 includes an inlet end 145A and an outlet end 145B; in each damping mechanism 140, the inlet end 145A of the damping valve 145 is communicated with the first opening 115, the outlet end 145B of the damping valve 145 is communicated with the second opening 125, and the damping valve 145 is configured to adjust the resistance of the fluid flowing from the first opening 115 to the second opening 125, so as to adjust the damping of the shock absorber.

[0043] In the shock absorber provided by the embodiment of the present disclosure, in each damping mechanism, the fluid flows from the first cavity through the first opening, the damping valve and the second opening to the second cavity. Therefore, the damping valve can adjust the resistance of the fluid from the first cavity to the second cavity, so as to adjust the damping of the shock absorber. Since the shock absorber includes a plurality of damping mechanisms, the plurality of damping mechanisms can adjust the damping of the shock absorber simultaneously, so as to at least increase the damping adjustment range or adjustment accuracy of the shock absorber.

[0044] In some examples, as Figure 3 As shown, a third cavity 203 is provided inside the third cylinder block 130. The third cylinder block 130 includes a third opening 135 located on the side wall of the third cylinder block 130 and penetrating through the side wall. The third opening 135 communicates the third cavity 203 and the second cavity 202.

[0045] For example, the third cavity 203 can be a working cavity, and a piston 150 and a piston rod 160 can be arranged therein. The shock absorber can absorb vibration energy through the reciprocating movement of the piston in the working cavity, so as to play a role in suppressing vibration and accelerating the attenuation of vibration.

[0046] In some examples, as Figure 3As shown, the second cavity 202 includes a plurality of sub-cavities 2020 arranged along the axial direction of the first cylinder block 110. A partition sealing assembly 175 is provided between two adjacent sub-cavities 2020 to isolate the two adjacent sub-cavities 2020. The third cylinder block 130 includes a plurality of third openings 135 arranged in one-to-one correspondence with the plurality of sub-cavities 2020. Each third opening 135 communicates the third cavity 203 with the corresponding sub-cavity 2020. That is to say, each sub-cavity 2020 is provided with a third opening 135 to communicate with the third cavity 203 through this third opening 135. The plurality of first openings 115 of the plurality of damping mechanisms 140 are respectively arranged in one-to-one correspondence with the plurality of sub-cavities 2020. Each damping mechanism 140 is configured to independently adjust the resistance of the fluid flowing from the sub-cavity 2020 to the first cavity 201. Thus, the fluid in the third cavity 203 can respectively enter the plurality of mutually isolated sub-cavities 2020 through the plurality of first openings 135, and then enter the second cavity 202 through the plurality of first openings 115 and pass through the plurality of damping mechanisms 140. In this process, each damping mechanism 140 can independently adjust the resistance of the fluid flowing from the sub-cavity 2020 to the first cavity 201, so that the resistance adjustment accuracy in the shock absorber is higher. In addition, by providing the partition sealing assembly, the second cavity can be divided into a plurality of sub-cavities without manufacturing a plurality of sub-cavities, which simplifies the manufacturing process and assembly steps.

[0047] In some examples, as Figure 3 shown, the orthographic projection of each third opening 135 on the first cylinder block 110 falls within the orthographic projection of the corresponding sub-cavity 2020 on the first cylinder block 110. The orthographic projection of the partition sealing assembly 175 on the first cylinder block 110 is located between the orthographic projections of two adjacent sub-cylinder bodies 2020 on the first cylinder block 110.

[0048] In some examples, as Figure 3 shown, the shock absorber 100 further includes a piston rod 160, a piston 150, an end cap 190, and a compression valve 180. The piston rod 160 is located in the third cavity 203 and is configured to reciprocate along the axial direction of the third cavity 203. The piston 150 is located at one end of the piston rod 160 to divide the third cavity 203 into two working chambers, such as an upper working chamber and a lower working chamber. The end cap 190 is sleeved on the piston rod 160 and seals one end of the second cylinder block 120 and the third cylinder block 130. The compression valve 180 is located at one end of the third cylinder block 130 away from the end cap 190. It should be noted that the volumes of the upper oil chamber and the lower oil chamber will change with the movement of the piston. In addition, the upper and lower in the upper working chamber and the lower working chamber do not represent the positional relationship between these two chambers, but are only used to distinguish the upper working chamber and the lower working chamber.

[0049] In some examples, as Figure 3As shown, a plurality of damping mechanisms 140 include a first damping mechanism 140A and a second damping mechanism 140B. The first damping mechanism 140A is located at an end of the first cylinder block 110 close to the compression valve 180, and the second damping mechanism 140B is located on a side of the first damping mechanism 140A away from the compression valve 180.

[0050] As Figure 3 shown, during the compression stroke of the shock absorber 100, the piston 150 in the third cavity 203 moves towards the compression valve 180 to compress the hydraulic fluid in the lower working cavity. A part of the hydraulic fluid in the lower working cavity flows through the one-way valve in the piston 150 into the upper working cavity, and then flows from the upper working cavity to the sub-cavity 2020 corresponding to the second damping mechanism 140B through the third opening 135 on the side wall of the third cylinder block 130, and then flows from the sub-cavity 2020 to the first cavity 201 through the second damping mechanism 140B. A part of the hydraulic fluid in the lower working cavity flows from the lower working cavity to the sub-cavity 2020 corresponding to the first damping mechanism 140A through the third opening 135 on the side wall of the third cylinder block 130, and then flows from the sub-cavity 2020 to the first cavity 201 through the first damping mechanism 140A. At the same time, a part of the hydraulic fluid in the lower working cavity directly flows into the first cavity through the one-way valve in the compression valve 180. Therefore, the plurality of damping mechanisms 140 and the compression valve 180 jointly generate damping in this process, and the damping valve 145 in each damping mechanism 140 can adjust the magnitude of the resistance of the hydraulic fluid flowing from the second cavity to the first cavity by controlling the opening degree of the valve, so as to adjust the magnitude of the damping generated by each damping mechanism 140.

[0051] As Figure 3 shown, during the rebound stroke (i.e., the extension stroke) of the shock absorber 100, the piston 150 in the third cavity 203 moves away from the compression valve 180 to compress the hydraulic fluid in the upper working cavity. A part of the hydraulic fluid in the upper working cavity flows through the one-way valve in the piston 150 into the lower working cavity, and then flows from the lower working cavity to the sub-cavity 2020 corresponding to the first damping mechanism 140A through the third opening 135 on the side wall of the third cylinder block 130, and then flows from the sub-cavity 2020 to the first cavity 201 through the first damping mechanism 140A. A part of the hydraulic fluid in the upper working cavity flows from the upper working cavity to the sub-cavity 2020 corresponding to the second damping mechanism 140B through the third opening 135 on the side wall of the third cylinder block 130, and then flows from the sub-cavity 2020 to the first cavity 201 through the second damping mechanism 140B. Therefore, the plurality of damping mechanisms 140 jointly generate damping in this process, and the damping valve 145 in each damping mechanism 140 can adjust the magnitude of the resistance of the hydraulic fluid flowing from the second cavity to the first cavity by controlling the opening degree of the valve, so as to adjust the magnitude of the damping generated by each damping mechanism 140.

[0052] Figure 4The structural schematic diagram of a sealing component provided by an embodiment of the present disclosure. As Figure 4 shown, the partition sealing component 175 includes a seal 1751, a movable limiting component 1752, a limiting groove 1753, and a blocking component 1754. The seal 1751 is located between the first cylinder block 110 and the third cylinder block 130; for example, the seal 1751 can be an O-ring, and the seal 1751 provided between the first cylinder block 110 and the third cylinder block 130 can undergo elastic deformation and be pressed by the first cylinder block 110 and the third cylinder block 130, so as to have an excellent sealing effect.

[0053] As Figure 4 shown, the movable limiting component 1752 is sleeved on the third cylinder block 130 and is movable in the axial direction of the third cylinder block 130; the limiting groove 1753 is located on the side of the third cylinder block 130 facing the first cylinder block 110; the movable limiting component 1752 is configured to limit the seal 1751, and a part of the blocking component 1754 is located in the limiting groove 1753 and is configured to block the movable limiting component 1752, so as to limit the movable limiting component 1752.

[0054] In this partition sealing component, since the movable limiting component is movable in the axial direction of the third cylinder block, it can be more easily installed between the third cylinder block and the first cylinder block, and limit and press the seal, so that the seal can seal better. On the other hand, since the seal, the movable limiting component, and the blocking component of this partition sealing component are all movable and detachable, and a good sealing effect and fixing effect can be achieved only through the cooperation between the seal, the movable limiting component, the blocking component, and the limiting groove, without other fixing processes such as welding. Therefore, it can be arranged at the middle position between the third cylinder block and the second cylinder block to divide the second cavity into multiple sub-cavities. And, as described above, this partition sealing component is detachably connected to the first cylinder block and the third cylinder block, and no other fixing processes are required, so it is convenient for installation and maintenance.

[0055] For example, as Figure 4 shown, the limiting groove 1753 can be located on the outer peripheral wall of the third cylinder block 130, a part of the blocking component 1754 is located in the limiting groove 1753, and a part abuts against the movable limiting component 1752 to block the movable limiting component 1752.

[0056] For example, as Figure 4 shown, the dimension of the blocking component 1754 in the radial direction of the third cylinder block 130 is smaller than the dimension of the movable limiting component 1752 in the radial direction of the third cylinder block 130.

[0057] In some examples, as Figure 4As shown, there may be a gap between the movable limiting component 1752 and the first cylinder block 110. When assembling the shock absorber, by setting the gap between the movable limiting component 1752 and the first cylinder block 110, the friction between the movable limiting component 1752 and the first cylinder block 110 can be reduced, which is convenient for installation and maintenance. For example, the movable limiting component 1752 and the first cylinder block 110 may be in clearance fit.

[0058] In some examples, the shape of the movable limiting component on a reference plane perpendicular to the axis of the first cylinder block includes an annular shape (not shown in the figure). The shape of the blocking member on the reference plane is an annular shape with a notch (not shown in the figure). For example, the blocking member is a discontinuous structure. For example, the blocking member includes two ends facing each other, and a notch is formed between the two ends. For example, the blocking member has elasticity, and by adjusting the size of the notch, the blocking member can be more easily sleeved on the third cylinder block. When the blocking member moves to the limiting groove, it can be stuck in the limiting groove (i.e., partially located in the limiting groove).

[0059] In some examples, as Figure 4 shown, the radial dimension of the part of the third cylinder block 130 where the limiting groove 1753 is formed is smaller than the radial dimension of other parts of the third cylinder block 130. In order to enable the blocking member 1754 part to be located in the limiting groove 1753, the inner diameter dimension of the blocking member 1754 is smaller than the radial dimension of other parts of the third cylinder block 130. By increasing the size of the notch of the blocking member 1754, the inner diameter dimension of the blocking member 1754 can be made larger than or equal to the radial dimension of other parts of the third cylinder block 130 to sleeve the blocking member 1754 on the third cylinder block 130. At the same time, after the blocking member 1754 reaches the limiting groove 1753, by reducing the size of the notch of the blocking member 1754, the blocking member 1754 can be reliably limited in the limiting groove 1753. For example, the blocking member 1754 may be a snap ring or a circlip.

[0060] In some examples, as Figure 4 shown, the movable limiting component 1752 includes a receiving portion close to the third cylinder block 130. The receiving portion is recessed into the body of the movable limiting component 1752 and is configured to accommodate the blocking member 1754. Thus, while the blocking member 1754 limits the movable limiting component 1752 in the axial direction of the third cylinder block 130, the movable limiting component 1752 can also limit the blocking member 1754 in the radial direction of the third cylinder block 130, thereby preventing the blocking member 1754 from jumping out.

[0061] In some examples, as Figure 4As shown, the movable limit assembly 1752 includes a first movable limit member 1752A and a second movable limit member 1752B that are spaced apart along the axis of the third cylinder block 130. The seal 1751 is located between the first movable limit member 1752A and the second movable limit member 1752B to limit the seal 1751 in the axial direction of the third cylinder block 130 through the first movable limit member 1752A and the second movable limit member 1752B. For example, the seal 1751 abuts between the first movable limit member 1752A and the second movable limit member 1752B.

[0062] In some examples, as Figure 4 shown, the limit groove 1753 includes a first limit groove 1753A and a second limit groove 1753B that are spaced apart along the axis of the third cylinder block 130. The blocking member 1754 includes a first blocking member 1754A and a second blocking member 1754B. The first blocking member 1754A is partially located in the first limit groove 1753A and is configured to block the first movable limit member 1752A. The second blocking member 1754B is partially located in the second limit groove 1753B and is configured to block the second movable limit member 1752B.

[0063] In some examples, as Figure 3 shown, a first end seal assembly 171 and a second end seal assembly 172 are provided between the first cylinder block 110 and the third cylinder block 130. The first end seal assembly 171 is located at the first end of the first cylinder block 110, and the second end seal assembly 172 is located at the second end of the first cylinder block 110 to seal the second cavity 202. The third opening 135 is located between the first end seal assembly 171 and the second end seal assembly 172 in the axial direction of the first cylinder block 110.

[0064] It should be noted that the first end seal assembly and the second end seal assembly can adopt the same structure as the partition seal assembly, which is convenient for installation and maintenance. Of course, the embodiments of the present disclosure include but are not limited to this. The first end seal assembly and the second end seal assembly can also adopt structures different from the partition seal assembly.

[0065] In some examples, as Figure 3 shown, the orthographic projection of the partition seal assembly 175 on the third cylinder block 130 is located between the orthographic projection of the first end seal assembly 171 on the third cylinder block 130 and the orthographic projection of the second end seal assembly 172 on the third cylinder block 130.

[0066] In some examples, as Figure 3 shown, a plurality of damping mechanisms 140 are spaced apart along the axis of the first cylinder block 110.

[0067] In some examples, as Figure 3As shown, the damping valve 145 further includes a valve housing 145C. In each damping mechanism 140, the valve housing 145C is located on the side of the second cylinder 120 away from the first cylinder 110. For example, the valve housing 145C is configured to accommodate the valve core of the damping valve 145.

[0068] For example, the damping valve 145 can be an electromagnetic valve, and the degree of opening of the valve of the damping valve can be controlled by an electric signal, thereby adjusting the damping of the shock absorber.

[0069] For example, the damping valve 145 can be fixed to the second cylinder 120 by welding the valve housing 145 to the outer side wall of the second cylinder 120. Of course, the embodiments of the present disclosure include but are not limited to this, and other methods can also be used to fix the damping valve to the second cylinder.

[0070] In some examples, as Figure 3 shown, in each damping mechanism 140, the orthographic projection of the first opening 115 on the second cylinder 120 is located within the second opening 125, so that the liquid inlet end 145A of the damping valve 145 can communicate with the first opening 115 through the second opening 125.

[0071] In some examples, as Figure 3 shown, in each damping mechanism 140, the orthographic projection of the first opening 115 on the second cylinder 120 is located within the orthographic projection of the valve housing 145 on the second cylinder 120, and the second opening 125 is located within the orthographic projection of the valve housing 145 on the second cylinder 120.

[0072] In some examples, in each damping mechanism, the center of the first opening and the center of the second opening are located on a straight line perpendicular to the axis direction of the first cylinder. Of course, the embodiments of the present disclosure include but are not limited to this.

[0073] In some examples, as Figure 3 shown, in each damping mechanism 140, the first opening 115 is connected to the liquid inlet end 145A of the damping valve 145 through a connecting member 147. On the one hand, the connecting member 147 is fixedly connected to the first cylinder 110, and on the other hand, it is hermetically connected to the liquid inlet end 145A of the damping valve 145.

[0074] For example, as Figure 3 shown, the outer side wall of the connecting member 147 is fixedly connected to the first cylinder 110, and the outer side wall of the connecting member 147 is hermetically connected to the liquid inlet end 145A of the damping valve 145.

[0075] For example, the connecting member 147 and the first cylinder 110 can be an integral member. Of course, the embodiments of the present disclosure include but are not limited to this, and the connecting member 147 and the first cylinder 110 can be separate members and then fixed together.

[0076] In some examples, such as Figure 3 shown, in each damping mechanism 140, the orthographic projection of the first opening 115 on the second cylinder body 120 is located within the orthographic projection of the valve housing 145 on the second cylinder body 120, and the second opening 125 is located within the orthographic projection of the valve housing 145 on the second cylinder body 120.

[0077] In some examples, such as Figure 3 shown, the orthographic projection of the connecting member 147 on the second cylinder body 120 is located within the orthographic projection of the valve housing 145 on the second cylinder body 120.

[0078] In some examples, such as Figure 3 shown, in each damping mechanism 140, the second opening 125 includes an intermediate region and a peripheral region. The liquid inlet end 145A of the damping valve 145 passes through the intermediate region and communicates with the first opening 115, and the liquid outlet end 145B of the damping valve 145 communicates with the peripheral region of the second opening 125.

[0079] Figure 5 The figure is a schematic structural diagram of another shock absorber provided by an embodiment of the present disclosure. As Figure 5 shown, the shock absorber 100 includes a first cylinder body 110, a second cylinder body 120, and a third cylinder body 130; the second cylinder body 120 is sleeved outside the first cylinder body 110 and forms a first cavity 201 located between the first cylinder body 110 and the second cylinder body 120 with the first cylinder body 110; the third cylinder body 130 is located inside the first cylinder body 110 and forms a second cavity 202 located between the first cylinder body 110 and the third cylinder body 130 with the first cylinder body 110.

[0080] For example, the third cylinder body 130 can be a working cylinder, the first cylinder body 110 can be an intermediate cylinder, and the second cylinder body 120 can be an oil storage cylinder; at this time, the first cavity 201 can be an oil storage cavity, and the second cavity 202 can be an intermediate cavity.

[0081] As Figure 5 shown, the first cylinder body 110 includes a first opening 115 located on the side wall of the first cylinder body 110 and penetrating through the side wall. The first opening 115 communicates the first cavity 201 and the second cavity 202, that is, the fluid in the first cavity 201 can flow to the second cavity 202 through the first opening 115, or the fluid in the second cavity 202 can flow to the first cavity 201 through the first opening 115; the second cylinder body 120 includes a second opening 125 located on the side wall of the second cylinder body 120 and penetrating through the side wall.

[0082] As Figure 5As shown, the shock absorber 100 further includes a plurality of damping mechanisms 140. Each damping mechanism 140 includes a corresponding damping valve 145, a first opening 115, and a second opening 125. The damping valve 145 includes an inlet end 145A and an outlet end 145B. In each damping mechanism 140, the inlet end 145A of the damping valve 145 is in communication with the first opening 115, and the outlet end 145B of the damping valve 145 is in communication with the second opening 125. The damping valve 145 is configured to adjust the resistance of the fluid flowing from the first opening 115 to the second opening 125, thereby adjusting the damping of the shock absorber.

[0083] As Figure 5 shown, within the third cylinder body 130 there is a third cavity 203. The third cylinder body 130 includes a third opening 135 located on the side wall of the third cylinder body 130 and penetrating through the side wall. The third opening 135 communicates the third cavity 203 and the second cavity 202.

[0084] For example, the third cavity 203 can be a working cavity, and a piston 150 and a piston rod 160 can be arranged therein. The shock absorber can absorb vibration energy through the reciprocating movement of the piston in the working cavity, thereby playing a role in suppressing vibration and accelerating the attenuation of vibration.

[0085] Different from Figure 3 the shock absorber shown, as Figure 5 shown, the second cavity 202 is a continuous cavity communicating with the third opening 135. All parts in the second cavity 202 are in communication with the third cavity 203 through the first opening 135. The plurality of damping mechanisms 140 are configured to jointly adjust the resistance of the fluid flowing from the second cavity 202 to the first cavity 201.

[0086] In the shock absorber provided by the embodiments of the present disclosure, in each damping mechanism, the fluid flows from the first cavity through the first opening, the damping valve, and the second opening to the second cavity. Therefore, the damping valve can adjust the resistance of the fluid from the first cavity to the second cavity, thereby adjusting the damping of the shock absorber. In addition, since the plurality of damping mechanisms jointly adjust the resistance of the fluid flowing from the second cavity to the first cavity, the shock absorber has a larger adjustable damping range.

[0087] In some examples, as Figure 5 shown, the shock absorber 100 further includes a piston rod 160, a piston 150, an end cap 190, and a compression valve 180. The piston rod 160 is located in the third cavity 203 and is configured to reciprocate along the axial direction of the third cavity 203. The piston 150 is located at one end of the piston rod 160 to divide the third cavity 203 into two working cavities, such as an upper working cavity and a lower working cavity. The end cap 190 is sleeved on the piston rod 160 and seals one end of the second cylinder body 120 and the third cylinder body 130. The compression valve 180 is located at one end of the third cylinder body 130 away from the end cap 190.

[0088] In some examples, as Figure 5 shown, a plurality of damping mechanisms 140 include a first damping mechanism 140A and a second damping mechanism 140B. The first damping mechanism 140A is located at an end of the first cylinder block 110 close to the compression valve 180, and the second damping mechanism 140B is located on a side of the first damping mechanism 140A away from the compression valve 180.

[0089] In some examples, as Figure 5 shown, a plurality of damping mechanisms 140 include a first damping mechanism 140A and a second damping mechanism 140B. The first opening 135 is located on a side of the second damping mechanism 140B away from the first damping mechanism 140A in the axial direction of the first cylinder block 110.

[0090] As Figure 5 shown, during the compression stroke of the shock absorber 100, the piston 150 in the third cavity 203 moves towards the compression valve 180 to compress the hydraulic fluid in the lower working cavity. A part of the hydraulic fluid in the lower working cavity flows through the check valve in the piston 150 to the upper working cavity, and then flows from the upper working cavity to the second cavity 202 through the third opening 135 on the side wall of the third cylinder block 130, and then flows from the second cavity 202 to the first cavity 201 through the first damping mechanism 140A and the second damping mechanism 140B. At the same time, a part of the hydraulic fluid in the lower working cavity directly flows to the first cavity through the check valve in the compression valve 180. Therefore, the plurality of damping mechanisms 140 and the compression valve 180 jointly generate damping in this process, and the plurality of damping mechanisms 140 jointly adjust the resistance of the fluid flowing from the second cavity 202 to the first cavity 201. The damping valve 145 in each damping mechanism 140 can adjust the magnitude of the resistance of the hydraulic fluid flowing from the second cavity to the first cavity by controlling the opening degree of the valve, so as to adjust the magnitude of the damping generated by each damping mechanism 140.

[0091] As Figure 5 shown, during the rebound stroke (i.e., the extension stroke) of the shock absorber 100, the piston 150 in the third cavity 203 moves away from the compression valve 180 to compress the hydraulic fluid in the upper working cavity. A part of the hydraulic fluid in the upper working cavity flows from the upper working cavity to the second cavity 202 through the third opening 135 on the side wall of the third cylinder block 130, and then flows from the second cavity 202 to the first cavity 201 through the first damping mechanism 140A and the second damping mechanism 140B. Therefore, the plurality of damping mechanisms 140 jointly adjust the resistance of the fluid flowing from the second cavity 202 to the first cavity 201. The damping valve 145 in each damping mechanism 140 can adjust the magnitude of the resistance of the hydraulic fluid flowing from the second cavity to the first cavity by controlling the opening degree of the valve, so as to adjust the magnitude of the damping generated by each damping mechanism 140.

[0092] In some examples, such as Figure 5 shown, a plurality of damping mechanisms 140 are arranged at intervals along the axial direction of the first cylinder block 110. Of course, the embodiments of the present disclosure include but are not limited to this, and the plurality of damping mechanisms may also be arranged at intervals along the circumferential direction of the first cylinder block.

[0093] In some examples, such as Figure 5 shown, a first end seal assembly 171 and a second end seal assembly 172 are provided between the first cylinder block 110 and the third cylinder block 130. The first end seal assembly 171 is located at the first end of the first cylinder block 110, and the second end seal assembly 172 is located at the second end of the first cylinder block 110 to seal the second cavity 202; the third opening 135 is located between the first end seal assembly 171 and the second end seal assembly 172 in the axial direction of the first cylinder block 110.

[0094] It should be noted that the first end seal assembly and the second end seal assembly may adopt the same structure as the Figure 3 partition seal assembly in the shock absorber shown, so as to facilitate installation and maintenance. Of course, the embodiments of the present disclosure include but are not limited to this, and the first end seal assembly and the second end seal assembly may also adopt a structure different from that of the partition seal assembly.

[0095] In some examples, such as Figure 5 shown, the damping valve 145 further includes a valve housing 145C. In each damping mechanism 140, the valve housing 145C is located on the side of the second cylinder block 120 away from the first cylinder block 110. For example, the valve housing 145C is configured to accommodate the valve core of the damping valve 145.

[0096] For example, the damping valve 145 can be an electromagnetic valve, and the opening degree of the valve of the damping valve can be controlled by an electric signal, so as to adjust the damping of the shock absorber.

[0097] For example, the damping valve 145 can be fixed to the second cylinder block 120 by welding the valve housing 145 to the outer side wall of the second cylinder block 120. Of course, the embodiments of the present disclosure include but are not limited to this, and other methods can also be used to fix the damping valve to the second cylinder block.

[0098] In some examples, such as Figure 5 shown, in each damping mechanism 140, the orthographic projection of the first opening 115 on the second cylinder block 120 is located within the second opening 125, so that the liquid inlet end 145A of the damping valve 145 can communicate with the first opening 115 through the second opening 125.

[0099] In some examples, such as Figure 3As shown, in each damping mechanism 140, the orthographic projection of the first opening 115 on the second cylinder block 120 is located within the orthographic projection of the valve housing 145 on the second cylinder block 120, and the second opening 125 is located within the orthographic projection of the valve housing 145 on the second cylinder block 120.

[0100] In some examples, in each damping mechanism, the centers of the first opening and the second opening are located on a straight line perpendicular to the axis direction of the first cylinder block. Of course, the embodiments of the present disclosure include but are not limited to this.

[0101] In some examples, as Figure 3 As shown, in each damping mechanism 140, the first opening 115 is connected to the liquid inlet end 145A of the damping valve 145 through a connecting member 147. On the one hand, the connecting member 147 is fixedly connected to the first cylinder block 110, and on the other hand, it is hermetically connected to the liquid inlet end 145A of the damping valve 145.

[0102] For example, as Figure 3 shown, the outer side wall of the connecting member 147 is fixedly connected to the first cylinder block 110, and the outer side wall of the connecting member 147 is hermetically connected to the liquid inlet end 145A of the damping valve 145.

[0103] For example, the connecting member 147 and the first cylinder block 110 may be an integral member. Of course, the embodiments of the present disclosure include but are not limited to this. The connecting member 147 and the first cylinder block 110 may be separate members and then fixed together.

[0104] In some examples, as Figure 3 shown, in each damping mechanism 140, the orthographic projection of the first opening 115 on the second cylinder block 120 is located within the orthographic projection of the valve housing 145 on the second cylinder block 120, and the second opening 125 is located within the orthographic projection of the valve housing 145 on the second cylinder block 120.

[0105] In some examples, as Figure 3 shown, the orthographic projection of the connecting member 147 on the second cylinder block 120 is located within the orthographic projection of the valve housing 145 on the second cylinder block 120.

[0106] In some examples, as Figure 3 shown, in each damping mechanism 140, the second opening 125 includes an intermediate region and a peripheral region. The liquid inlet end 145A of the damping valve 145 passes through the intermediate region and is connected to the first opening 115, and the liquid outlet end 145B of the damping valve 145 is connected to the peripheral region of the second opening 125.

[0107] Figure 6 It is a schematic diagram of a vehicle provided by an embodiment of the present disclosure. As Figure 6As shown, the vehicle 500 includes the above-described shock absorber. Since the shock absorber can adjust the damping of the shock absorber through multiple damping mechanisms, the damping adjustment range or adjustment accuracy of the shock absorber can be increased at least. Therefore, the vehicle using this shock absorber can have better driving performance, safety and comfort.

[0108] The following points need to be explained:

[0109] (1) In the drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are involved, and other structures can refer to the general design.

[0110] (2) Without conflict, the features in the same embodiment and different embodiments of the present disclosure can be combined with each other.

[0111] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A shock absorber, comprising: A first cylinder block; A second cylinder block sleeved outside the first cylinder block, and forming a first cavity between the first cylinder block and the second cylinder block; And A third cylinder block located inside the first cylinder block, and forming a second cavity between the first cylinder block and the third cylinder block; Wherein, the first cylinder block includes a first opening located on the side wall of the first cylinder block and penetrating through the side wall, and the first opening communicates the first cavity and the second cavity; the second cylinder block includes a second opening located on the side wall of the second cylinder block and penetrating through the side wall, The shock absorber further includes a plurality of damping mechanisms, each of the damping mechanisms includes a damping valve, a first opening and a second opening, and the damping valve includes an inlet end and an outlet end, In each of the damping mechanisms, the inlet end of the damping valve communicates with the first opening, the outlet end of the damping valve communicates with the second opening, and the damping valve is configured to adjust the resistance of the fluid flowing from the first opening to the second opening.

2. The shock absorber according to claim 1, wherein, There is a third cavity inside the third cylinder block, and the third cylinder block includes a third opening located on the side wall of the third cylinder block and penetrating through the side wall, and the third opening communicates the third cavity and the second cavity.

3. The shock absorber according to claim 2, wherein, The second cavity includes a plurality of sub-cavities arranged along the axis direction of the first cylinder block, and a partition sealing assembly is arranged between adjacent two of the sub-cavities; The third cylinder block includes a plurality of the third openings arranged in one-to-one correspondence with the plurality of sub-cavities, each of the third openings communicates the third cavity with the corresponding sub-cavity, the plurality of the first openings of the plurality of damping mechanisms are respectively arranged in one-to-one correspondence with the plurality of sub-cavities, and each of the damping mechanisms is configured to separately adjust the resistance of the fluid flowing from the sub-cavity to the first cavity.

4. The shock absorber according to claim 3, wherein, The partition sealing assembly includes: A seal located between the first cylinder block and the third cylinder block; A movable limiting assembly sleeved on the third cylinder block and movable in the axial direction of the third cylinder block; A limiting groove located on the side of the third cylinder block facing the first cylinder block; and A blocking member, Wherein, the movable limiting assembly is configured to limit the seal, and a part of the blocking member is located in the limiting groove and is configured to block the movable limiting assembly.

5. The shock absorber according to claim 2, wherein, The second cavity is a continuous cavity communicating with the third opening, and each part in the second cavity communicates with the third cavity through the first opening, and the plurality of damping mechanisms are configured to jointly adjust the resistance of the fluid flowing from the second cavity to the first cavity.

6. The shock absorber according to claim 5, wherein, The plurality of damping mechanisms include a first damping mechanism and a second damping mechanism, and the third opening is located on the side of the second damping mechanism away from the first damping mechanism in the axial direction of the first cylinder block.

7. The shock absorber according to claim 5, wherein, The plurality of damping mechanisms are arranged at intervals along the circumferential direction of the first cylinder block.

8. The shock absorber according to any one of claims 2-6, wherein, A first end seal assembly and a second end seal assembly are provided between the first cylinder block and the third cylinder block. The first end seal assembly is located at the first end of the first cylinder block, and the second end seal assembly is located at the second end of the first cylinder block to seal the second cavity. The first opening is located between the first end seal assembly and the second end seal assembly in the axial direction of the first cylinder block.

9. The shock absorber according to any one of claims 1-6, wherein, The plurality of damping mechanisms are arranged at intervals in the axial direction of the first cylinder block.

10. The shock absorber according to any one of claims 1-6, wherein, The damping valve further includes a valve housing. In each of the damping mechanisms, the valve housing is located on the side of the second cylinder block away from the first cylinder block.

11. The shock absorber according to any one of claims 1-6, wherein, In each of the damping mechanisms, the orthographic projection of the first opening on the second cylinder block is located within the second opening.

12. The shock absorber according to any one of claims 1-6, wherein, In each of the damping mechanisms, the first opening is connected to the liquid inlet end of the damping valve through a connecting member.

13. The shock absorber according to claim 12, wherein, In each of the damping mechanisms, the second opening includes an intermediate region and an outer peripheral region. The liquid inlet end of the damping valve passes through the intermediate region and is connected to the first opening, and the liquid outlet end of the damping valve is connected to the outer peripheral region of the second opening.

14. The shock absorber according to any one of claims 1-6 further includes: A piston rod, located in the third cavity and configured to reciprocate in the axial direction of the third cavity; A piston, located at one end of the piston rod to divide the third cavity into two working chambers; An end cap, sleeved on the piston rod and sealing one end of the second cylinder block and the third cylinder block; A compression valve, located at the end of the third cylinder block away from the end cap.

15. The shock absorber according to claim 14, wherein, The plurality of damping mechanisms include a first damping mechanism and a second damping mechanism. The first damping mechanism is located at the end of the first cylinder block close to the compression valve, and the second damping mechanism is located on the side of the first damping mechanism away from the compression valve.

16. A vehicle includes the shock absorber according to any one of claims 1-15.

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