Vibration damper, vibration damping system and vehicle

Abstract

The utility model provides a shock absorber, a shock absorption system and a vehicle, and belongs to the technical field of vehicle parts, and the shock absorber comprises an inner cylinder barrel, a first control valve and a first check valve. The first control valve is at least partially located in the inner cylinder barrel, and the first control valve divides the inner cylinder barrel into a recovery cavity and a compression cavity. The shock absorber is provided with a first flow path and a second flow path which are arranged in parallel, the first flow path and the second flow path both communicate with the recovery cavity and the compression cavity, the first control valve is used for controlling on-off of the first flow path, and the first check valve is used for enabling fluid to enter the recovery cavity from the compression cavity through the second flow path. And the fluid is limited from entering the compression cavity from the recovery cavity through the second flow path. According to the shock absorber provided by the embodiment of the invention, through mutual cooperation of the first control valve and the first check valve, the recovery stroke and the compression stroke of the shock absorber can be decoupled, the first control valve does not need to be opened in the compression stroke, the influence of the first control valve on compression damping is reduced, and then the response efficiency of the shock absorber is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle parts, in particular to a shock absorber, a shock absorption system and a vehicle. BACKGROUND

[0002] The shock absorber generally controls the flow of fluid inside the shock absorber through the electromagnetic valve installed on the fluid passage, so as to realize the absorption and suppression of vibration and adjust the damping characteristics of the shock absorber to meet the needs of different application scenarios.

[0003] During the operation of the shock absorber, the switching of the rebound stroke and the compression stroke is carried out quickly. In the rebound stroke, fluid needs to flow from the rebound chamber into the compression chamber, and in the compression stroke, fluid needs to flow from the compression chamber back to the rebound chamber. In the related art, the rebound stroke and the compression stroke usually need to pass through the same fluid passage. That is, the same electromagnetic valve participates in the control process of the rebound stroke and the compression stroke at the same time, which causes the rebound and compression processes to be not decoupled, affecting the response efficiency of the rebound and compression. UTILITY MODEL CONTENT

[0004] The present application provides a shock absorber, a shock absorption system and a vehicle, which can decouple the rebound and compression processes of the shock absorber and improve the response efficiency of the shock absorber.

[0005] In order to achieve the above-mentioned purpose, according to the first aspect of the present application, a shock absorber is provided, comprising:

[0006] An inner cylinder barrel;

[0007] A first control valve located at least partially in the inner cylinder barrel, and the first control valve separates the inner cylinder barrel into a rebound chamber and a compression chamber;

[0008] A first check valve located in the inner cylinder barrel;

[0009] The shock absorber has a first flow path and a second flow path arranged in parallel, and the first flow path and the second flow path both communicate the rebound chamber and the compression chamber, wherein the first control valve is used to control the on-off of the first flow path, and the first check valve is used to make the fluid enter the rebound chamber from the compression chamber through the second flow path and limit the fluid from entering the compression chamber from the rebound chamber through the second flow path.

[0010] Optionally, the shock absorber further comprises an outer cylinder barrel;

[0011] A liquid storage chamber is formed between the inner cylinder barrel and the outer cylinder barrel;

[0012] The liquid storage chamber is adapted to communicate with the compression chamber.

[0013] Optionally, the shock absorber further comprises an external valve assembly;

[0014] The external valve assembly is connected with the inner cylinder and the outer cylinder, and is used for controlling the opening and closing of the communication between the liquid storage cavity and the compression cavity.

[0015] Optionally, the external valve assembly comprises a second control valve.

[0016] The shock absorber further has a third flow path communicating the liquid storage cavity and the compression cavity, and the second control valve is used for controlling the opening and closing of the third flow path.

[0017] Optionally, the external valve assembly further comprises a second check valve.

[0018] The shock absorber further has a fourth flow path arranged in parallel with the third flow path, and the fourth flow path also communicates the liquid storage cavity and the compression cavity, and the second check valve is used for allowing the fluid to enter the compression cavity from the liquid storage cavity via the fourth flow path and limiting the fluid to enter the liquid storage cavity from the compression cavity via the fourth flow path.

[0019] Optionally, the shock absorber further comprises a connecting piece.

[0020] The connecting piece is internally provided with a first channel and a second channel.

[0021] The first channel is in communication with the compression cavity, and the second channel is in communication with the liquid storage cavity, and the external valve assembly is used for controlling the opening and closing of the communication between the first channel and the second channel.

[0022] Optionally, the connecting piece is arranged at one end of the inner cylinder having the compression cavity.

[0023] Optionally, the connecting piece comprises a first connecting part and a second connecting part.

[0024] The first connecting part is used for being connected with the inner cylinder and the outer cylinder, and the second connecting part is used for being connected with the external valve assembly.

[0025] The first connecting part is arranged at one side of the outer cylinder in the axial direction, and the second connecting part is arranged at one side of the outer cylinder in the radial direction.

[0026] Optionally, the liquid storage cavity comprises oil and gas.

[0027] Optionally, the first control valve comprises a driving mechanism and a valve core.

[0028] The driving mechanism and the valve core are drivingly connected, and the driving mechanism is adapted to drive the valve core to reciprocate along the axial direction of the inner cylinder, so as to control the opening and closing of the communication between the recovery cavity and the compression cavity.

[0029] Optionally, the inner cylinder is internally provided with a partition structure.

[0030] The partition structure is arranged between the recovery cavity and the compression cavity, the partition structure is provided with a through hole, and the first check valve is used for controlling the opening and closing of the through hole.

[0031] According to a second aspect of the present application, there is also provided a damping system comprising the damper as described above.

[0032] According to a third aspect of the present application, there is also provided a vehicle comprising the damper as described above, and / or the damping system as described above.

[0033] The damper provided by the embodiments of the present application comprises an inner cylinder, a first control valve and a first check valve. The first control valve is at least partially located in the inner cylinder, and the first check valve is located in the inner cylinder. The first control valve is capable of separating the inner cylinder into a recovery cavity and a compression cavity. The damper has a first flow path and a second flow path arranged in parallel. The first flow path and the second flow path are both in communication with the recovery cavity and the compression cavity. The first control valve is used to control the opening and closing of the first flow path, and the first check valve is used to allow fluid to flow from the compression cavity to the recovery cavity through the second flow path and to restrict fluid from flowing from the recovery cavity to the compression cavity through the second flow path. In the recovery stroke of the damper, the first control valve is opened, and the fluid in the recovery cavity flows into the compression cavity through the first control valve and is affected by the pressure difference, so that the fluid in the compression cavity cannot flow into the recovery cavity through the first check valve. In the compression stroke of the damper, the fluid flows from the compression cavity to the recovery cavity, and in this process, the first control valve is closed, and the fluid in the compression cavity flows into the recovery cavity through the first check valve. That is, through the cooperation of the first control valve and the first check valve, the recovery stroke and the compression stroke of the damper can be decoupled, the first control valve does not need to be opened in the compression stroke, the influence of the first control valve on the compression damping is reduced, and the response efficiency of the damper is improved.

[0034] Other features and advantages of the present application will be described in detail in the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0036] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description represent the same parts.

[0037] Figure 1 is a structural schematic diagram of the damper provided by the embodiments of the present application;

[0038] Figure 2 is Figure 1 is an enlarged schematic diagram of A in FIG. 4;

[0039] Figure 3 isFigure 1 Enlarged schematic view at B;

[0040] Figure 4 is a schematic diagram of fluid flow direction of the shock absorber in the rebound stroke provided by the embodiments of the present application;

[0041] Figure 5 is a schematic diagram of fluid flow direction of the shock absorber in the compression stroke provided by the embodiments of the present application.

[0042] Explanation of reference signs:

[0043] 1, inner cylinder; 11, rebound chamber; 12, compression chamber; 13, partition structure; 131, through hole; 2, first control valve; 21, valve core; 22, driving mechanism; 3, first check valve; 4, outer cylinder; 41, liquid storage chamber; 5, external valve assembly; 51, second control valve; 52, second check valve; 6, connecting piece; 61, first connecting part; 62, second connecting part; 63, first channel; 64, second channel. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0045] In the first aspect, please refer to Figure 1The embodiment of the present application provides a shock absorber, which comprises an inner cylinder 1, a first control valve 2 and a first check valve 3. The first control valve 2 is at least partially located in the inner cylinder 1, and the first check valve 3 is located in the inner cylinder 1. The first control valve 2 can separate the inner cylinder 1 into a recovery cavity 11 and a compression cavity 12. The shock absorber has a first flow path and a second flow path which are arranged in parallel. The first flow path and the second flow path are both connected to the recovery cavity 11 and the compression cavity 12. The first control valve 2 is used for controlling the opening and closing of the first flow path. The first check valve 3 is used for allowing fluid to flow from the compression cavity 12 to the recovery cavity 11 through the second flow path and limiting the fluid from flowing from the recovery cavity 11 to the compression cavity 12 through the second flow path. In the recovery stroke of the shock absorber, the first control valve 2 is opened, the fluid in the recovery cavity 11 flows into the compression cavity 12 through the first control valve 2, and the fluid in the compression cavity 12 cannot flow into the recovery cavity 11 through the first check valve 3 due to the pressure difference. In the compression stroke of the shock absorber, the fluid flows from the compression cavity 12 to the recovery cavity 11, and in this process, the first control valve 2 is closed, and the fluid in the compression cavity 12 flows into the recovery cavity 11 through the first check valve 3. That is, through the cooperation of the first control valve 2 and the first check valve 3, the recovery stroke and the compression stroke of the shock absorber can be decoupled, the first control valve 2 does not need to be opened in the compression stroke, the influence of the first control valve 2 on the compression damping is reduced, and the response efficiency of the shock absorber is improved.

[0046] In addition, since the first check valve 3 can limit the flow direction of the fluid, the fluid cannot flow from the recovery cavity 11 to the compression cavity 12 through the first check valve 3, and can only flow from the compression cavity 12 to the recovery cavity 11 through the first check valve 3. In the recovery stroke, the recovery damping force is adjusted through the first control valve 2, and in the compression stroke, the first control valve 2 does not need to participate. By using the characteristic that the first check valve 3 hardly produces throttling effect in a specific direction, the flow capacity of the fluid from the compression cavity 12 to the recovery cavity 11 is improved, the recovery stroke and the compression stroke of the shock absorber are decoupled, and the risk of the idle stroke of the shock absorber is reduced.

[0047] It can be understood that the recovery stroke of the shock absorber, also known as the stretching stroke, is the stroke required for the shock absorber to recover from the loaded state to the initial state, and in this process, the shock absorber is stretched. Correspondingly, the compression stroke of the shock absorber is the process in which the shock absorber is compressed, and in this process, the shock absorber is compressed. The recovery stroke and the compression stroke are two continuous stages of the work of the shock absorber. When the vehicle encounters vibration, the shock absorber will constantly switch between the two strokes, and therefore the switching efficiency has a great influence on comfort.

[0048] In some embodiments, referring to Figure 1 and Figure 2 , the shock absorber further comprises an outer cylinder 4. A liquid storage cavity 41 is formed between the inner cylinder 1 and the outer cylinder 4. The liquid storage cavity 41 is adapted to be connected to the compression cavity 12.

[0049] By forming the liquid storage cavity 41 between the outer cylinder 4 and the inner cylinder 1, the balance of the fluid in the inner cylinder 1 during the rebound and compression processes can be ensured. The fluid stored in the liquid storage cavity 41 can also supplement the fluid in the inner cylinder 1, which helps to stabilize the shock absorber during continuous operation and high-speed movement. In addition, the liquid storage cavity 41 can also play a role in heat dissipation. During the operation of the shock absorber, heat will be generated due to friction and compression, and the liquid storage cavity 41 can improve the heat dissipation effect and reduce the impact of overheating of the shock absorber.

[0050] The outer cylinder 4 can be sleeved on the outer periphery of the inner cylinder 1, thereby forming a space between the outer cylinder 4 and the inner cylinder 1, i.e., the liquid storage cavity 41.

[0051] In some embodiments, referring to Figure 1 and Figure 3 , the shock absorber further comprises an external valve assembly 5. The external valve assembly 5 is connected to the inner cylinder 1 and the outer cylinder 4, and is used to control the opening and closing of the liquid storage cavity 41 and the compression chamber 12.

[0052] The external valve assembly 5 can control the opening and closing of the liquid storage cavity 41 and the compression chamber 12, and thus adjust the rebound and compression processes as needed to ensure that the shock absorber generates appropriate damping force. Specifically, during the rebound process, the external valve assembly 5 is opened, and the fluid in the liquid storage cavity 41 flows into the compression chamber 12 through the external valve assembly 5. During this process, the rebound damping force can be adjusted by changing the opening degree of the external valve assembly 5. During the compression process, the appropriate compression damping force can also be generated by adjusting the opening degree of the external valve assembly 5.

[0053] In some embodiments, referring to Figure 3 , the external valve assembly 5 comprises a second control valve 51. The shock absorber further has a third flow path that communicates the liquid storage cavity 41 and the compression chamber 12, and the second control valve 51 is used to control the opening and closing of the third flow path.

[0054] The second control valve 51 can control the opening and closing of the third flow path that communicates the liquid storage cavity 41 and the compression chamber 12, and the compression damping force can be adjusted by adjusting the opening degree of the second control valve 51.

[0055] In some embodiments, the external valve assembly 5 further comprises a second check valve 52. The shock absorber further has a fourth flow path that is arranged in parallel with the third flow path, and the fourth flow path also communicates the liquid storage cavity 41 and the compression chamber 12, and the second check valve 52 is used to allow the fluid to flow from the liquid storage cavity 41 to the compression chamber 12 through the fourth flow path, and to restrict the fluid from flowing from the compression chamber 12 to the liquid storage cavity 41 through the fourth flow path.

[0056] The third flow path and the fourth flow path formed between the liquid storage cavity 41 and the compression cavity 12 are arranged in parallel, so that the fluid flow between the liquid storage cavity 41 and the compression cavity 12 is decoupled in the rebound stroke and the compression stroke, and the response efficiency of the shock absorber is improved. In the rebound stroke, the fluid in the liquid storage cavity 41 flows into the compression cavity 12 through the second check valve 52, and the second control valve 51 is in a closed state. In the compression stroke, the second control valve 51 is opened, the fluid in the compression cavity 12 flows into the liquid storage cavity 41 through the second control valve 51, and the compression damping force can be adjusted by adjusting the opening degree of the second control valve 51. Since the second check valve 52 can limit the flow of the fluid in the compression cavity 12 to the liquid storage cavity 41, the damping force in the compression stroke is only controlled by the opening degree of the second control valve 51.

[0057] The shock absorber provided by the embodiment of the present application decouples the rebound stroke and the compression stroke of the shock absorber through the first control valve 2 and the first check valve 3 arranged in parallel in the inner cylinder 1, and the second control valve 51 and the second check valve 52 in the external valve assembly 5, and the response efficiency of the shock absorber is improved.

[0058] Specifically, in the rebound stroke, referring to Figure 4 , on the one hand, the fluid in the rebound cavity 11 flows into the compression cavity 12 through the first control valve 2, and on the other hand, the fluid in the liquid storage cavity 41 flows into the compression cavity 12 through the second check valve 52, so that the shock absorber rebounds. In this process, the rebound damping force is only controlled by the first control valve 2 and is not affected by the second control valve 51. In the compression stroke, referring to Figure 5 , on the one hand, part of the fluid in the compression cavity 12 flows into the rebound cavity 11 through the first check valve 3, and on the other hand, part of the fluid in the compression cavity 12 flows into the liquid storage cavity 41 through the second control valve 51. In this process, the compression damping force is only controlled by the second control valve 51 and is not affected by the first control valve 2. Therefore, the shock absorber provided by the embodiment of the present application can decouple the rebound stroke and the compression stroke, reduce the influence of the first control valve 2 on the compression stroke and the influence of the second control valve 51 on the rebound stroke, and significantly improve the response efficiency of the shock absorber. Meanwhile, the characteristics that the first check valve 3 and the second check valve 52 hardly produce throttling effect in a specific direction can also reduce the risk of the stroke of the shock absorber.

[0059] It should be noted that Figure 4 and Figure 5 The dashed line in the figure indicates the flow path of the fluid in the rebound stroke and the compression stroke.

[0060] In some embodiments, referring to Figure 3The connecting piece 6 is provided with a first channel 63 and a second channel 64. The first channel 63 is in communication with the compression chamber 12, and the second channel 64 is in communication with the liquid storage chamber 41. The external valve assembly 5 is used to control the opening and closing of the first channel 63 and the second channel 64.

[0061] That is, the external valve assembly 5 is connected with the inner cylinder 1 and the outer cylinder 4 through the connecting piece 6. The first channel 63 in the connecting piece 6 is in communication with the compression chamber 12, and the second channel 64 is in communication with the liquid storage chamber 41. The external valve assembly 5 can control the opening and closing of the first channel 63 and the second channel 64, thereby controlling the opening and closing of the compression chamber 12 and the liquid storage chamber 41. In the related art, the external valve assembly 5 is usually connected through the openings on the inner cylinder 1 and the outer cylinder 4. In the process of punching the openings on the inner cylinder 1 and the outer cylinder 4, deviation is prone to occur, thereby causing the problem of coaxial accuracy, which affects the connection of the external valve assembly 5 with the inner cylinder 1 and the outer cylinder 4. In the embodiment of the present application, the connecting piece 6 is connected with the inner cylinder 1 and the outer cylinder 4, and no opening is needed, thereby reducing the assembly difficulty and facilitating the fluid exchange between the liquid storage chamber 41 and the compression chamber 12 in the compression stroke and the recovery stroke.

[0062] In some embodiments, referring to Figure 3 The connecting piece 6 is arranged at one end of the inner cylinder 1 having the compression chamber 12, that is, the bottom of the inner cylinder 1. By arranging the connecting piece 6 at one end of the inner cylinder 1 having the compression chamber 12, that is, the bottom of the inner cylinder 1, the external valve assembly 5 can be reasonably arranged to save the space occupied by the shock absorber.

[0063] The connecting piece 6 can be selected according to actual needs. For example, when the radial space along the inner cylinder 1 is large, a bent connecting piece 6 can be selected, so that the external valve assembly 5 is arranged to cross the inner cylinder 1 and the outer cylinder 4. When the axial space along the inner cylinder 1 is large, a straight pipe connecting piece 6 can be selected, so that the extension direction of the external valve assembly 5 is the same as the extension direction of the inner cylinder 1 and the outer cylinder 4.

[0064] In some embodiments, referring to Figure 3 The connecting piece 6 includes a first connecting part 61 and a second connecting part 62. The first connecting part 61 is used to connect with the inner cylinder 1 and the outer cylinder 4, and the second connecting part 62 is used to connect with the external valve assembly 5. The first connecting part 61 is arranged on one side of the outer cylinder 4 in the axial direction, and the second connecting part 62 is arranged on one side of the outer cylinder 4 in the radial direction.

[0065] By arranging the first connecting part 61 and the second connecting part 62 on the axial direction and the radial direction of the outer cylinder 4 respectively, the extension direction of the inner cylinder 1 and the extension direction of the external valve assembly 5 can be crossed, thereby saving the space in the axial direction of the inner cylinder 1 and facilitating the arrangement of the shock absorber.

[0066] In some embodiments, the liquid storage cavity 41 includes oil and gas. That is, by the oil and gas in the liquid storage cavity 41 working together to absorb and dissipate the vibration energy of the vehicle during driving, the compressibility of the gas can be used to achieve nonlinear stiffness changes, thereby providing more accurate damping force under different vibration intensities and improving the damping effect. By using a mixture of oil and gas, the damping force can be flexibly adjusted by changing the pressure of the gas.

[0067] For example, the volume ratio of the gas in the liquid storage cavity 41 can be 20%-80%. The ratio of the gas can be adjusted according to actual needs, and the oil can immerse the cavity in the external valve assembly 5 so that the gas does not enter the external valve assembly 5.

[0068] In some embodiments, referring to Figure 1 and Figure 2 , the first control valve 2 includes a driving mechanism 22 and a valve core 21. The driving mechanism 22 and the valve core 21 are drivingly connected, and the driving mechanism 22 is adapted to drive the valve core 21 to reciprocate along the axial direction of the inner cylinder 1 to control the opening and closing of the recovery cavity 11 and the compression cavity 12. By drivingly connecting the driving mechanism 22 and the valve core 21, the shock absorber can adjust the damping characteristics according to the external vibration or impact intensity, improve the adaptive ability, and help to maintain good damping effect under different working conditions. The driving mechanism 22 can improve the accuracy of control, reduce wear and friction in the inner cylinder 1, and prolong the service life.

[0069] In some embodiments, as shown in Figure 2 , a partition structure 13 is arranged in the inner cylinder. The partition structure 13 is arranged between the recovery cavity 11 and the compression cavity 12, and a through hole 131 is formed in the partition structure 13. The first check valve 3 is used to control the opening and closing of the through hole 131.

[0070] According to a second aspect of the present application, a damping system is also provided, which includes the shock absorber as described above. The damping system provided by the present application has all the beneficial effects of the shock absorber as described above, which will not be repeated here.

[0071] According to a third aspect of the present application, a vehicle is also provided, which includes the shock absorber as described above, and / or the damping system as described above.

[0072] The vehicle provided by the embodiments of the present application has all the beneficial effects of the shock absorber as described above, which will not be repeated here.

[0073] In the description of the application, the terms "first", "second", "third" and the like are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0074] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0075] The embodiments, implementation manners and related technical features of the present application can be combined or replaced with each other without conflict.

[0076] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made to the above embodiment in accordance with the technical essence of the present application without departing from the technical solution content of the present application still falls within the scope of the technical solution of the present application.

Claims

1. A damper characterized by, The shock absorber comprises: an inner cylinder; a first control valve located at least partially in the inner cylinder, and the first control valve separates the inner cylinder into a rebound chamber and a compression chamber; a first check valve located in the inner cylinder; the shock absorber has a first flow path and a second flow path arranged in parallel, and the first flow path and the second flow path both communicate with the rebound chamber and the compression chamber, wherein the first control valve is used to control the opening and closing of the first flow path, and the first check valve is used to allow fluid to flow from the compression chamber to the rebound chamber through the second flow path, and restrict fluid from flowing from the rebound chamber to the compression chamber through the second flow path.

2. The damper of claim 1, wherein The shock absorber further comprises an outer cylinder; a liquid storage chamber is formed between the inner cylinder and the outer cylinder; the liquid storage chamber is adapted to communicate with the compression chamber.

3. The damper of claim 2, wherein The shock absorber further comprises an external valve assembly; the external valve assembly is connected with the inner cylinder and the outer cylinder, and the external valve assembly is used to control the opening and closing between the liquid storage chamber and the compression chamber.

4. The damper of claim 3, wherein The external valve assembly comprises a second control valve; the shock absorber further has a third flow path, and the third flow path communicates with the liquid storage chamber and the compression chamber, and the second control valve is used to control the opening and closing of the third flow path.

5. The damper of claim 4, wherein The external valve assembly further comprises a second check valve; the shock absorber further has a fourth flow path arranged in parallel with the third flow path, and the fourth flow path also communicates with the liquid storage chamber and the compression chamber, and the second check valve is used to allow fluid to flow from the liquid storage chamber to the compression chamber through the fourth flow path, and restrict fluid from flowing from the compression chamber to the liquid storage chamber through the fourth flow path.

6. The damper of claim 3, wherein The shock absorber further comprises a connecting piece; the connecting piece is provided with a first channel and a second channel; the first channel communicates with the compression chamber, and the second channel communicates with the liquid storage chamber, and the external valve assembly is used to control the opening and closing between the first channel and the second channel.

7. The damper of claim 6, wherein The connecting piece is arranged at one end of the inner cylinder having the compression chamber.

8. The damper of claim 6, wherein The connecting piece is provided with a first connecting part and a second connecting part; the first connecting part is used to connect with the inner cylinder and the outer cylinder, and the second connecting part is used to connect with the external valve assembly; wherein the first connecting part is arranged at one side of the connecting piece along the axial direction of the outer cylinder, and the second connecting part is arranged at one side of the connecting piece along the radial direction of the outer cylinder.

9. Damper according to any of claims 2-8, characterized in that The liquid storage chamber contains oil and gas.

10. Damper according to any of claims 1-8, characterized in that The first control valve comprises a driving mechanism and a valve core; the driving mechanism and the valve core are drivingly connected, and the driving mechanism is adapted to drive the valve core to reciprocate along the axial direction of the inner cylinder, so as to control the opening and closing between the rebound chamber and the compression chamber.

11. Damper according to any of claims 1-8, characterized in that The inner cylinder is provided with a partition structure; the partition structure is arranged between the rebound chamber and the compression chamber, and a through hole is formed in the partition structure, and the first check valve is used to control the opening and closing of the through hole.

12. A vibration damping system, characterized by The shock absorber comprises any one of the shock absorbers according to claims 1-11.

13. A vehicle characterized by comprising: The shock absorber comprises any one of the shock absorbers according to claims 1-11, and / or the shock absorbing system according to claim 12.

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