Shock absorber and vehicle with same

Abstract

The invention discloses a shock absorber and a vehicle with the same. The shock absorber comprises an oil cylinder, a piston assembly, an air cylinder assembly, an oil duct and a movable part. A first cavity is formed in the oil cylinder. One end of the piston assembly extends into the first cavity, and the piston assembly can move in the axial direction of the oil cylinder. The air cylinder assembly comprises an air cylinder barrel, the air cylinder barrel is arranged on the peripheral side of the oil cylinder in a sleeving mode, and a containing cavity is jointly defined between the inner wall of the air cylinder barrel and the outer wall of the oil cylinder. The oil duct is used for communicating the first cavity with the containing cavity, and the oil duct, the first cavity and the containing cavity form a damping adjusting cavity. The movable part is arranged in the damping adjusting cavity, the damping adjusting cavity is divided into a first medium cavity and a second medium cavity by the movable part, the movable part moves under the action of the piston assembly so as to adjust the size of the second medium cavity, and the first medium cavity comprises at least part of the first cavity. According to the shock absorber, the size of the shock absorber is reduced, and the applicability of the shock absorber is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of shock absorbers, and in particular to a shock absorber and a vehicle having the same. Background Art

[0002] In the related art, a gas shock absorber usually includes a cylinder and a shock absorber body, which are connected by an oil and gas pipe. The cylinder and the shock absorber body of this type of gas shock absorber need to be installed separately, which makes installation difficult in a compactly designed space and has poor applicability. In addition, the excessive length of the oil and gas pipe can easily lead to untimely oil return and produce idle travel, thus affecting the vibration reduction effect. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a shock absorber, which reduces the size of the shock absorber and improves the applicability of the shock absorber.

[0004] Another object of the present invention is to provide a vehicle using the above shock absorber.

[0005] The shock absorber according to the first aspect of the present invention comprises: a cylinder, a first chamber is formed in the cylinder; a piston assembly, one end of the piston assembly extends into the first chamber, and the piston assembly is movable along the axial direction of the cylinder; a cylinder assembly, the cylinder assembly comprises a cylinder barrel, the cylinder barrel is sleeved on the outer peripheral side of the cylinder, and an accommodating chamber is jointly defined between the inner wall of the cylinder barrel and the outer wall of the cylinder; an oil channel, the oil channel is used to connect the first chamber and the accommodating chamber, the oil channel, the first chamber and the accommodating chamber form a damping adjustment chamber; a movable part, the movable part is arranged in the damping adjustment chamber, the movable part divides the damping adjustment chamber into a first medium chamber and a second medium chamber, the movable part moves under the action of the piston assembly to adjust the volume of the second medium chamber, and the first medium chamber includes at least part of the first chamber.

[0006] According to the shock absorber of the embodiment of the present invention, by arranging the cylinder barrel on the outer peripheral side of the oil cylinder, compared with the traditional shock absorber, the size of the shock absorber is reduced while ensuring the vibration reduction effect of the shock absorber, thereby improving the applicability of the shock absorber and being adaptable to more vehicle models. At the same time, there is no need to consider the installation position of the external cylinder barrel during installation, thereby reducing the difficulty of installation.

[0007] According to some embodiments of the present invention, the second medium chamber includes at least a portion of the accommodating cavity.

[0008] According to some embodiments of the present invention, the movable part is disposed in the accommodating chamber, and the movable part divides the accommodating chamber into an upper accommodating chamber and a lower accommodating chamber, the upper accommodating chamber constitutes the second medium chamber, and the lower accommodating chamber, the oil channel and the first chamber constitute the first medium chamber.

[0009] According to some embodiments of the present invention, the first medium chamber is used to be filled with a first medium, and the second medium chamber is used to be filled with a second medium, and the first medium is different from the second medium.

[0010] According to some embodiments of the present invention, the first medium is oil, and the second medium is an elastic member.

[0011] According to some embodiments of the present invention, the first medium is oil, and the second medium is an inert gas.

[0012] According to some embodiments of the present invention, the oil cylinder and the cylinder barrel are coaxially arranged.

[0013] According to some embodiments of the present invention, the cylinder barrel includes a cylinder body and a cylinder head, the cylinder head is arranged at one axial end of the cylinder body, the cylinder head and the cylinder body jointly define the accommodating cavity, an air inlet hole is formed on the cylinder head, and the upper accommodating chamber is connected with the outside through the air inlet hole.

[0014] According to some embodiments of the present invention, the cylinder assembly also includes a bushing connecting seat, which is connected to the oil cylinder and is used to connect the shock absorber to the vehicle body / wheel. The cylinder barrel and the bushing connecting seat are an integrally formed part, and the oil channel is formed in the bushing connecting seat.

[0015] According to some embodiments of the present invention, an installation groove is formed on the bushing connecting seat, and the installation groove is respectively connected to the accommodating cavity and the oil channel, one end of the oil cylinder is fitted in the installation groove, and the inner diameter of the installation groove is smaller than the outer diameter of the cylinder barrel.

[0016] According to some embodiments of the present invention, the further comprising: a regulating valve, wherein the regulating valve is disposed on the oil passage, and the regulating valve is used to regulate the flow of the medium in the first medium chamber.

[0017] According to some embodiments of the present invention, the regulating valve is a solenoid valve.

[0018] According to some embodiments of the present invention, the regulating valve is a rotary damping valve.

[0019] According to some embodiments of the present invention, the regulating valve has a normally open oil circuit, at least one compression oil circuit and at least one recovery oil circuit, the two ends of the normally open oil circuit are respectively connected to the first chamber and the lower accommodating chamber, a compression valve is provided on the compression oil circuit to control the connection and disconnection of the compression oil circuit with the first chamber and the lower accommodating chamber, and a recovery oil circuit is provided with a recovery valve to control the connection and disconnection of the recovery oil circuit with the first chamber and the lower accommodating chamber.

[0020] According to some embodiments of the present invention, the regulating valve includes: a valve seat, the valve seat is formed with a first compression oil section, a first normally open oil section and a first recovery oil section, the first compression oil section is provided with the compression valve, and the first recovery oil section is provided with the recovery valve; a valve core, one end of the valve core extends into the valve seat, the valve core is formed with a second compression oil section, a second normally open oil section and a second recovery oil section, the second compression oil section is connected with the first compression oil section and constitutes the compression oil circuit, the second normally open oil section is connected with the first normally open oil section and constitutes the normally open oil circuit, and the second recovery oil section is connected with the first recovery oil section and constitutes the recovery oil circuit; a knob assembly, the knob assembly is sleeved on the other end of the valve core, and when the knob assembly rotates, it drives the valve core to rotate so that the second compression oil section is connected with the first compression oil section or the second recovery oil section is connected with the first recovery oil section.

[0021] According to some embodiments of the present invention, there are multiple compression oil circuits and multiple recovery oil circuits, and the multiple recovery oil circuits are arranged at intervals in the circumferential direction of the multiple compression oil circuits, and the aperture of each recovery oil circuit is larger than the aperture of each compression oil circuit.

[0022] According to some embodiments of the present invention, at least two of the plurality of compression oil passages have different apertures.

[0023] According to some embodiments of the present invention, the knob assembly includes a sealing member and a knob member, the sealing member is arranged between the valve core and the knob member, the sealing member is formed with a plurality of grooves, the knob member is provided with a plurality of protrusions and a plurality of gear position markings, the plurality of protrusions and the plurality of gear position markings are respectively located on both sides of the thickness direction of the knob member, wherein the plurality of protrusions correspond one-to-one to the plurality of grooves, and the protrusions fit in the grooves, and the plurality of gear position markings correspond one-to-one to the plurality of protrusions.

[0024] A vehicle according to an embodiment of a second aspect of the present invention comprises the shock absorber according to an embodiment of the first aspect of the present invention.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 is a schematic diagram of a shock absorber according to an embodiment of the present invention;

[0028] Figure 2 is a cross-sectional view of a shock absorber according to an embodiment of the present invention;

[0029] Figure 3 yes Figure 2 The enlarged view of the A part shown in the middle circle;

[0030] Figure 4 is a cross-sectional view of a regulating valve of a shock absorber according to an embodiment of the present invention;

[0031] Figure 5 is a schematic diagram of a compression oil circuit and a recovery oil circuit of a shock absorber according to an embodiment of the present invention;

[0032] Figure 6 is a schematic diagram of a knob member of a shock absorber according to an embodiment of the present invention;

[0033] Figure 7 yes Figure 6 A schematic diagram of another angle of the knob member shown in ;

[0034] Figure 8 yes Figure 6 A cross-sectional view of the knob member shown in ;

[0035] Fig. 9 is a schematic diagram of a sealing member of a shock absorber according to an embodiment of the present invention;

[0036] Fig.10 yes Fig. 9 A cross-sectional view of the seal shown in ;

[0037] Fig.11 is a flow path diagram of oil in a static state of a shock absorber according to an embodiment of the present invention;

[0038] Fig.12 yes Fig.11 The enlarged view of the part B shown in the middle circle;

[0039] Fig.13 is a flow path diagram of oil in a shock absorber at a high speed according to an embodiment of the present invention;

[0040] Fig.14 yes Fig.13 The enlarged view of the C part circled in the middle;

[0041] Fig.15 is a flow path diagram of oil in a low-speed recovery state of a shock absorber according to an embodiment of the present invention;

[0042] Fig.16 yes Fig.15 The enlarged view of the D part circled in the middle;

[0043] Fig.17 is a flow path diagram of oil in a high-speed recovery state of a shock absorber according to an embodiment of the present invention;

[0044] Fig.18 yes Fig.17 Enlarged view of the circled section E.

[0045] Reference numerals:

[0046] 100: shock absorber;

[0047] 1: Cylinder assembly; 11: Cylinder barrel; 111: Accommodation chamber; 1111: Upper accommodation chamber; 1112: Lower accommodation chamber; 112: Second medium chamber; 113: First medium chamber; 12: Movable member; 13: Air inlet; 14: Oil passage; 16: Cylinder head; 17: Cylinder body; 18: Bushing connection seat; 181: Mounting groove; 182: Mounting hole; 2: Oil cylinder; 21: First chamber; 22: Oil cylinder head; 23: Oil cylinder body; 3: Piston assembly; 4: Regulating valve; 41: Normally open oil circuit; 42: Compressed oil 4: a first compression oil section; 43: a recovery oil section; 44: a valve seat; 441: a first compression oil section; 442: a compression valve; 443: a first normally open oil section; 444: a first recovery oil section; 445: a recovery valve; 45: a valve core; 451: a second compression oil section; 452: a second normally open oil section; 453: a second recovery oil section; 46: a knob assembly; 461: a sealing member; 4611: a groove; 462: a knob member; 4621: a protrusion; 4622: a gear position mark; 47: a rotary damping valve; 5: a dust cover; 6: a buffer member. DETAILED DESCRIPTION

[0048] In the related art, gas shock absorbers usually adopt an oil-gas separation structure, that is, the cylinder of the gas shock absorber is separated from the shock absorber body. At present, the arrangement of the cylinder and the shock absorber body is divided into the following two types: one is a piggyback structure, that is, the cylinder is staggered and connected to the outer wall of the shock absorber body; the other is a separation structure, that is, the cylinder and the shock absorber body are separated, and the two are connected by an oil and gas pipe.

[0049] However, the first arrangement will increase the longitudinal or transverse dimensions of the gas shock absorber, resulting in a larger installation space for the gas shock absorber, and the cylinder will limit the travel of the swing arm of the shock absorber assembly during driving, which is quite limited and leads to poor applicability of the gas shock absorber. In the second arrangement, since the cylinder is completely separated from the shock absorber assembly, the cylinder and the shock absorber assembly need to be installed separately, which makes installation more difficult in a compact design space, resulting in poor applicability, and the excessive length of the oil and gas pipe easily leads to untimely oil return and idle travel, affecting the shock absorption effect.

[0050] Reference below Figure 1-Figure 18 A vibration damper 100 according to an embodiment of a first aspect of the present invention will be described.

[0051] like Figure 1-Figure 18 As shown, the shock absorber 100 according to the first embodiment of the present invention includes an oil cylinder 2, a piston assembly 3, a cylinder assembly 1, an oil channel 14 and a movable part 12.

[0052] Specifically, a first chamber 21 is formed in the oil cylinder 2. One end of the piston assembly 3 extends into the first chamber 21, and the piston assembly 3 is movable along the axial direction of the oil cylinder 2. The cylinder assembly 1 includes a cylinder barrel 11, which is sleeved on the outer peripheral side of the oil cylinder 2, and the inner wall of the cylinder barrel 11 and the outer wall of the oil cylinder 2 jointly define an accommodating chamber 111. The oil passage 14 is used to connect the first chamber 21 and the accommodating chamber 111, and the oil passage 14, the first chamber 21 and the accommodating chamber 111 form a damping adjustment chamber. The movable member 12 is arranged in the damping adjustment chamber, and the movable member 12 divides the damping adjustment chamber into a first medium chamber 113 and a second medium chamber 112. The movable member 12 moves under the action of the piston assembly 3 to adjust the volume of the second medium chamber 112, and the first medium chamber 113 includes at least part of the first chamber 21.

[0053] For example, in Figure 1-Figure 3 In the example, the oil cylinder 2 is formed with a first chamber 21 extending in the axial direction, and one end of the oil cylinder 2 in the longitudinal direction extends into the accommodating chamber 111 and is threadedly connected to the side wall of the accommodating chamber 111, so that the cylinder barrel 11 is surrounded by the outer wall of the oil cylinder 2. The outer diameter of the movable member 12 is greater than or equal to the inner diameter of the damping adjustment chamber, so that the movable member 12 can separate the damping adjustment chamber into a first medium chamber 113 and a second medium chamber 112, and can prevent the medium in the first medium chamber 113 from entering the second medium chamber 112, and prevent the medium in the second medium chamber 112 from entering the first medium chamber 113, so that the first medium chamber 113 and the second medium chamber 112 are not connected to each other.

[0054] The oil passage 14 is arranged between the first chamber 21 and the accommodating chamber 111, so that the oil passage 14, the first chamber 21 and the accommodating chamber 111 form a damping adjustment chamber. The damping adjustment chamber can provide the vehicle with a large stroke and a large damping bandwidth adjustment space, so that the vehicle can be used for all-terrain operations and avoid the damping force attenuation phenomenon. The resistance in the damping adjustment chamber can slow down the amplitude of the piston assembly 3 when moving along the axial direction of the oil cylinder 2, thereby ensuring the stability of the vehicle when driving.

[0055] When the pressure of the second medium chamber 112 is greater than the pressure of the first medium chamber 113, the movable member 12 moves toward the first medium chamber 113, at which time the volume of the second medium chamber 112 is increased and the volume of the first medium chamber 113 is reduced, and the medium in the first medium chamber 113 pushes the piston assembly 3 to move away from the cylinder barrel 11 to achieve the vibration reduction function of the shock absorber 100; when the pressure of the second medium chamber 112 is equal to the pressure of the first medium chamber 113, the movable member 12 moves in the second medium chamber 112. The position of the piston assembly 3 remains stable, and the position of the piston assembly 3 also remains stable; when the pressure of the second medium chamber 112 is less than the pressure of the first medium chamber 113, the movable part 12 moves toward the second medium chamber 112, at this time, the volume of the first medium chamber 113 is increased, and the volume of the second medium chamber 112 is reduced, and the first medium of the first chamber 21 pushes the piston assembly 3 to move toward the cylinder barrel 11, that is, the first medium of the first chamber 21 moves toward the first medium chamber 113, so as to realize the vibration reduction function of the shock absorber 100.

[0056] Among them, since the cylinder barrel 11 is sleeved on the outer peripheral side of the oil cylinder 2, the axial dimension of the shock absorber 100 is reduced, so that the piston assembly 3 of the shock absorber 100 has a larger stroke, thereby improving the vibration reduction efficiency of the shock absorber 100.

[0057] According to the shock absorber 100 of the embodiment of the present invention, by sleeve-arranging the cylinder barrel 11 on the outer peripheral side of the oil cylinder 2, compared with the traditional shock absorber, while ensuring the vibration reduction effect of the shock absorber 100, the size of the shock absorber 100 is reduced, and the piston assembly 3 of the shock absorber 100 can be ensured to have a larger stroke, thereby improving the applicability of the shock absorber 100 and being adaptable to more vehicle models. At the same time, there is no need to consider the installation position of the external cylinder barrel 11 during installation, thereby reducing the difficulty of installation.

[0058] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 The second medium chamber 112 includes at least a portion of the accommodating chamber 111. With this arrangement, the volume of the second medium chamber 112 is increased, thereby improving the vibration reduction margin of the vibration absorber 100.

[0059] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 The movable member 12 is arranged in the accommodating chamber 111. The movable member 12 divides the accommodating chamber 111 into an upper accommodating chamber 1111 and an upper accommodating chamber 1112. The upper accommodating chamber 1111 constitutes the second medium chamber 112. The upper accommodating chamber 1112, the oil passage 14 and the first chamber 21 constitute the first medium chamber 113. In this way, on the one hand, the length of the accommodating chamber 111 in the axial direction of the oil cylinder 2 is shorter than the length of the first chamber and the oil passage 14, which can limit the moving range of the movable member 12, and then limit the damping control range between the first medium chamber 113 and the second medium chamber 112, so as to avoid untimely recovery after excessive control, and then avoid the generation of lost motion to affect the vibration damping, thereby improving the user experience; on the other hand, the inner diameter of the accommodating chamber 111 is large, which is convenient for the installation of the movable member 12, and a movable member 12 of larger size can be set, which is conducive to better realizing the vibration reduction effect of the shock absorber 100.

[0060] In other embodiments, the movable member 12 may be disposed in the first chamber 21, in which case the movable member 12 divides the first chamber 21 into an upper chamber and a lower chamber, the upper chamber constituting the second medium chamber 112, the lower chamber, the oil passage 14 and the accommodating chamber 111 constituting the first medium chamber 113. In other implementations, the movable member 12 may be disposed in the oil passage 14, in which case the movable member 12 divides the oil passage 14 into an upper oil passage section and a lower oil passage section, the upper oil passage section and the first chamber 21 constituting the second medium chamber 112, and the lower oil passage section and the accommodating chamber 111 constituting the first medium chamber 113.

[0061] According to some embodiments of the present invention, the first medium chamber 113 is used to fill the first medium, and the second medium chamber 112 is used to fill the second medium, and the first medium is different from the second medium. In other words, the density of the first medium is different from the density of the second medium. As a result, the pressure changes in the first medium chamber 113 and the second medium chamber 112 are more sensitive, so that the shock absorber 100 can achieve rapid vibration reduction according to road conditions.

[0062] According to some embodiments of the present invention, the first medium is oil, and the second medium is an elastic member. The oil has excellent viscosity, lubricity and mechanical stability, and has good vibration reduction, buffering, sealing, waterproofing and damping performance. The use of oil as a medium can increase the flow speed of the medium in the lower accommodating chamber 111, the oil channel 14 and the first chamber 21, thereby improving the vibration reduction efficiency. The elastic member has a large elastic force, that is, the elastic member can generate an elastic force according to the relative displacement, and adjust the position of the movable member 12 under the action of the elastic force to achieve the vibration reduction effect of the shock absorber 100.

[0063] According to other embodiments of the present invention, the first medium is oil and the second medium is inert gas. Among them, inert gas has the advantage of being chemically inactive. Therefore, using oil and inert gas as the medium in the first medium chamber 113 and the second medium chamber 112 respectively can prevent the oil from reacting with the inert gas, and can effectively improve the use stability of the shock absorber 100.

[0064] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 , the oil cylinder 2 and the cylinder barrel 11 are coaxially arranged. As a result, the central axis of the cylinder barrel 11, the central axis of the movable part 12, the central axis of the oil cylinder 2 and the central axis of the piston assembly 3 coincide. When the shock absorber 100 is applied to a vehicle, the movable part 12 moves along the axial direction of the cylinder barrel 11, so that the movable part 12 pushes the medium in the second medium chamber 112 or the medium in the first medium chamber 113 more smoothly; the piston assembly 3 moves along the axial direction of the cylinder barrel 11, so that the piston assembly 3 applies a more uniform force to the oil in the first chamber 21, thereby increasing the stability of the piston assembly 3 during movement, thereby effectively improving the stability of the shock absorber 100 during use.

[0065] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 The cylinder barrel 11 includes a cylinder body 17 and a cylinder head 16. The cylinder head 16 is disposed at one axial end of the cylinder body 17. The cylinder head 16 and the cylinder body 17 jointly define a housing chamber 111. An air inlet hole 13 is formed on the cylinder head 16. The upper housing chamber 1111 is connected to the outside through the air inlet hole 13. Therefore, it is convenient to inject inert gas into the upper housing chamber 1111 through the air inlet hole 13, so as to facilitate adjusting the volume of the inert gas in the upper housing chamber 1111, so as to realize the vibration reduction function of the shock absorber 100.

[0066] According to some specific embodiments of the present invention, referring to Figure 1-Figure 3 The cylinder assembly 1 also includes a bushing connection seat 18, which is connected to the oil cylinder 2 and is used to connect the shock absorber 100 to the vehicle body / wheel. For example, a mounting hole 182 is formed on the side of the bushing connection seat 18 away from the oil cylinder 2, and the fastener is connected to the vehicle body / wheel through the mounting hole 182. The cylinder barrel 11 and the bushing connection seat 18 are an integrally formed part, which saves processing steps, thereby improving the production effect and improving the structural strength of the cylinder assembly 1. The oil channel 14 is formed in the bushing connection seat 18, which increases the setting space of the oil channel 14 and facilitates the processing of the oil channel 14.

[0067] Further, refer to Figure 2 and Figure 3The bushing connection seat 18 is formed with a mounting groove 181, which is communicated with the accommodating chamber 111 and the oil passage 14 respectively. One end of the oil cylinder 2 is fitted in the mounting groove 181, and the inner diameter of the mounting groove 181 is smaller than the outer diameter of the cylinder barrel 11. This arrangement increases the connection stability of the oil cylinder 2 on the bushing connection seat 18. At the same time, since the inner diameter of the mounting groove 181 is smaller than the outer diameter of the cylinder barrel 11, the outer wall of the oil cylinder 2 and the inner wall of the cylinder barrel 11 are spaced apart, thereby forming the accommodating chamber 111.

[0068] According to some embodiments of the present invention, referring to Figure 4 The shock absorber 100 further includes a regulating valve 4, which is disposed on the oil passage 14 and is used to adjust the flow rate of the medium in the first medium chamber 113. That is, the regulating valve 4 can control the oil pressure difference between the medium in the second medium chamber 112 and the medium in the first medium chamber 113, thereby adjusting the damping of the shock absorber 100.

[0069] Optionally, the regulating valve 4 is a solenoid valve.

[0070] Optionally, the regulating valve 4 can also be a rotary damping valve 47. The rotary damping valve 47 uses electromagnetics to operate, and the rotary damping valve 47 often uses a passive device, so that the rotary damping valve 47 has a good shockproof effect. The rotary damping valve 47 has an electromagnetic bearing and has an excellent structure. The use of the rotary damping valve 47 as the regulating valve 4 makes the regulating valve 4 have electromagnetic and shockproof properties, while extending the service life of the regulating valve 4.

[0071] According to some specific embodiments of the present invention, referring to Figure 4 The regulating valve 4 has a normally open oil circuit 41, at least one compression oil circuit 42 and at least one recovery oil circuit 43. Both ends of the normally open oil circuit 41 are respectively connected to the first chamber 21 and the lower accommodating chamber 111. A compression valve 442 is provided on the compression oil circuit 42 to control the connection and disconnection of the compression oil circuit 42 with the first chamber 21 and the lower accommodating chamber 111. A recovery valve 445 is provided on the recovery oil circuit 43 to control the connection and disconnection of the recovery oil circuit 43 with the first chamber 21 and the lower accommodating chamber 111.

[0072] like Figure 3 and Figure 4 As shown, when the piston assembly 3 is in a stationary state, it indicates that the vehicle is in a stationary state or is traveling on a smooth road section, and the vehicle does not need to use the shock absorber 100 for vibration reduction. At this time, the normally open oil circuit 41 is connected to the first chamber 21 and the upper accommodating chamber 1112, the compression oil circuit 42 is in a closed state, and the recovery oil circuit 43 is in a closed state. The oil pressure in the first chamber 21 and the upper accommodating chamber 1112 can be adjusted through the normally open oil circuit 41 to ensure that the piston assembly 3 is in a stationary state.

[0073] When the piston assembly 3 moves at a low speed, it indicates that the vehicle is traveling on a relatively stable road section. The vehicle uses the shock absorber 100 to perform a small vibration reduction. At this time, the normally open oil circuit 41 connects the first chamber 21 and the upper accommodating chamber 1112, the compression oil circuit 42 is in a closed state, and the recovery oil circuit 43 is in a closed state. The oil pressure in the first chamber 21 and the upper accommodating chamber 1112 can be adjusted through the normally open oil circuit 41, and the vibration reduction function of the shock absorber 100 is realized at the same time.

[0074] Further, during the high-speed movement of the piston assembly 3, when one end of the piston assembly 3 moves in the direction toward the cylinder barrel 11, the compression valve 442 opens, the restoration valve 445 closes, and the first chamber 21 and the upper accommodating chamber 1112 are connected through the normally open oil passage 41 and the compression oil passage 42. When one end of the piston assembly 3 moves in the direction away from the cylinder barrel 11, the compression valve 442 closes, the restoration valve 445 opens, and the first chamber 21 and the upper accommodating chamber 1112 are connected through the normally open oil passage 41 and the restoration oil passage 43.

[0075] like Fig.13 and Fig.14 As shown, during the high-speed movement of the piston assembly 3, the piston assembly 3 moves toward the cylinder barrel 11 and will affect part of the oil in the first chamber 21 (i.e. Fig.13 The right side of the middle piston assembly 3 forms extrusion, which increases the pressure in the first chamber 21. Since the first chamber 21 is connected to the upper accommodating chamber 1112, the pressure in the upper accommodating chamber 1112 is increased, so that the pressure in the first chamber 21 is greater than the pressure in the upper accommodating chamber 1112. The normally open oil circuit 41 alone cannot alleviate the pressure difference between the first chamber 21 and the upper accommodating chamber 1112. At this time, the compression valve 442 is in the open position, and the compression oil circuit 42 can be used as a supplement to the normally open oil circuit 41, so that the oil in the first chamber 21 can enter the upper accommodating chamber 1112 through the compression oil circuit 42 and the normally open oil circuit 41, thereby improving the efficiency of the first chamber 21 in transmitting the oil to the upper accommodating chamber 1112, thereby reducing the damping force generated during the oil transmission process and improving the vibration reduction effect of the shock absorber 100.

[0076] like Fig.17 and Fig.18As shown, during the high-speed movement of the piston assembly 3, when the piston assembly 3 moves in the direction away from the cylinder barrel 11, the pressure on the right side of the first chamber 21 is reduced. Since the first chamber 21 is connected to the upper accommodating chamber 1112, the pressure in the upper accommodating chamber 1112 is also reduced, and then the pressure in the first chamber 21 is less than the pressure in the upper accommodating chamber 1112. The normally open oil circuit 41 alone cannot alleviate the pressure difference between the upper accommodating chamber 1112 and the first chamber 21. At this time, the recovery valve 445 is in the open position, and the recovery oil circuit 43 is used as a supplement to the normally open oil circuit 41 during the recovery process, so that the oil in the upper accommodating chamber 1112 enters the first chamber 21 through the normally open oil circuit 41 and the recovery oil circuit 43, thereby reducing the damping force generated during the oil transmission process and improving the vibration reduction effect of the shock absorber 100.

[0077] According to some embodiments of the present invention, Figure 4 As shown, the regulating valve 4 includes a valve seat 44, a valve core 45 and a knob assembly 46. The valve seat 44 is formed with a first compression oil section 441, a first normally open oil section 443 and a first recovery oil section 444. The first compression oil section 441 is provided with a compression valve 442, and the first recovery oil section 444 is provided with a recovery valve 445. One end of the valve core 45 extends into the valve seat 44, and the valve core 45 is formed with a second compression oil section 451, a second normally open oil section 452 and a second recovery oil section 453. The second compression oil section 451 is connected to the first compression oil section 441 and forms a compression oil circuit 42, the second normally open oil section 452 is connected to the first normally open oil section 443 and forms a normally open oil circuit 41, and the second recovery oil section 453 is connected to the first recovery oil section 444 and forms a recovery oil circuit 43. The knob assembly 46 is sleeved on the other end of the valve core 45 . When the knob assembly 46 rotates, it drives the valve core 45 to rotate so that the second compression oil section 451 is connected to the first recovery oil section 444 .

[0078] The valve seat 44 is connected to the cylinder barrel 11 by threaded sealing, one end of the valve core 45 is connected to the valve seat 44, and the other end of the valve core 45 is connected to the knob assembly 46. By applying force to the knob assembly 46, the valve core 45 is rotated around the central axis of the valve seat 44, so that the second compression oil section 451 on the valve core 45 is controlled to be misaligned or opposite to the first compression oil section 441, and the second recovery oil section 453 is misaligned or opposite to the first recovery oil section 444, so that it is convenient to connect the corresponding compression oil circuit 42 or recovery oil circuit 43 during high-speed movement, thereby improving the vibration reduction efficiency.

[0079] Further, refer to Figure 5 There are multiple compression oil passages 42 and multiple recovery oil passages 43, and the multiple recovery oil passages 43 are arranged at intervals in the circumferential direction of the multiple compression oil passages 42, and the aperture of each recovery oil passage 43 is larger than the aperture of each compression oil passage 42. In the description of the present invention, "multiple" means two or more.

[0080] During high-speed movement, when the compression valve 442 is not opened, the pressure difference between the first chamber 21 and the upper accommodating chamber 1112 increases, the compression valve 442 opens, and the oil flows rapidly along the compression oil path 42 after passing through the compression valve 442, thereby quickly attenuating the vibration of the vehicle and improving the comfort of the vehicle. When the recovery valve 445 is not opened, the oil flows only through the normally open oil path 41, and the rebound force of the vehicle gradually increases. The recovery valve 445 opens to allow the oil to flow back to the first chamber 21 through the recovery oil path 43, thereby pushing the piston assembly 3 to recover so that the tire can quickly contact the ground, generate grip, and improve the vehicle's passability.

[0081] During the high-speed compression process, when the piston assembly 3 moves toward the first chamber 21, an extrusion force is formed on the oil, pushing the oil through the compression oil circuit 42 so as to attenuate the vibration of the vehicle. In order to prevent the vehicle from moving downward quickly, the aperture of the compression oil circuit 42 is set smaller to slow down the flow rate of the oil in the compression oil circuit, so that the vehicle moves downward slowly. During the high-speed recovery process, the recovery force comes from the pressure difference between the medium in the second medium chamber 112 of the cylinder barrel 11 and the medium in the first medium chamber 113. In order to ensure that the vehicle quickly recovers to the initial state, the aperture of the recovery oil circuit 43 is set larger to ensure that more oil can quickly flow to the first medium chamber 113 to push the movable part 12. Therefore, the recovery oil circuit 43 is arranged at intervals along the circumference of the compression oil circuit 42, and the aperture of the recovery oil circuit 43 is larger than the aperture of the compression oil circuit 42, which improves the recovery efficiency and avoids the idle stroke problem caused by the oil circuit being too long and causing the oil to return in time, thereby improving the stability of vibration reduction.

[0082] Furthermore, at least two of the plurality of compression oil passages 42 have different apertures. Figure 5 As shown, there are eight compression oil circuits 42, of which three compression oil circuits 42 have small apertures, two compression oil circuits 42 have medium apertures, and the remaining three compression oil circuits 42 have large apertures. The smaller the aperture of the compression oil circuit 42, the greater the corresponding damping force, that is, the greater the friction force of the oil passing through, and the slower the flow rate. Such a setting makes it easy to adjust the knob assembly 46 according to actual conditions so that the second compression oil circuit section 451 corresponds to the first compression oil circuit section 441 with different apertures, thereby adjusting the oil flow rate of the compression oil circuit 42, so that the shock absorber 100 is suitable for different vibration reduction amplitudes, thereby improving the applicability of the shock absorber 100.

[0083] According to some specific embodiments of the present invention, Figure 6-Figure 10As shown, the knob assembly 46 includes a sealing member 461 and a knob member 462. The sealing member 461 is disposed between the valve core 45 and the knob member 462. For example, the sealing member 461 is coaxially disposed on a side of the knob member 462 close to the valve core 45 to prevent the knob member 462 from rotating relative to the valve core 45 and causing oil leakage, thereby improving the sealing performance of the shock absorber 100. The sealing member 461 is formed with a plurality of grooves 4611, and the knob member 462 is provided with a plurality of protrusions 4621 and a plurality of gear position marks 4622. The plurality of protrusions 4621 and the plurality of gear position marks 4622 are respectively located in the thickness direction of the knob member 462 (for example, Figure 6 On both sides of the upper and lower directions), wherein the plurality of protrusions 4621 correspond one-to-one to the plurality of grooves 4611, and the protrusions 4621 fit in the grooves 4611, and the plurality of gear position markings 4622 correspond one-to-one to the plurality of protrusions 4621.

[0084] For example, in Figure 6-Figure 10 In the example, 8 gear position marks 4622 are provided on the knob member 462, and 8 protrusions 4621 are formed in the thickness direction of the knob member 462 corresponding to each gear position mark 4622. Correspondingly, 8 grooves 4611 are formed at positions corresponding to each protrusion 4621 on the seal member 461. When the knob member 462 is turned, the protrusion 4621 of the knob member 462 will fit into the groove 4611 of the seal member 461, ensuring the accuracy of the gear position adjustment, so that the gear position mark 4622 can accurately correspond to a plurality of compression oil paths 42 with different apertures.

[0085] In addition, a first limit block is provided at the edge of the knob member 462, the first limit block and the protrusion 4621 are located on the same side of the thickness direction of the knob member 462, and a second limit block is provided on the seal member 461, the second limit block and the groove 4611 are located on the same side of the thickness direction of the seal member 461, and the knob member 462 is effectively limited by the cooperation of the first limit block and the second limit block, so as to avoid the knob member 462 from rotating too much or too little during use to affect the on-off of the compression oil circuit 42 and / or the recovery oil circuit 43.

[0086] In some optional embodiments, referring to Figure 1 and Figure 2The shock absorber 100 also includes a retractable dust cover 5 and a buffer 6. The dust cover 5 is sleeved on the outside of the oil cylinder 2 and the piston assembly 3. The buffer 6 is sleeved on the piston assembly 3, and the buffer 6 is located in the dust cover 5. The dust cover 5 can effectively prevent dust and the like from adhering to the inner wall of the oil cylinder 2 or the outer wall of the piston assembly 3 during use, thereby improving the smoothness of the movement of the piston assembly 3 in the oil cylinder 2 and improving the use stability of the shock absorber 100. At the same time, it can seal the oil and gas to prevent the volatilization of the oil from affecting the vibration reduction effect. The buffer 6 is arranged at one end of the piston assembly 3 away from the oil cylinder 2. The buffer 6 is used to buffer the movement of the piston assembly 3 to prevent the piston assembly 3 from excessively extending into the oil cylinder 2 and causing damage to the inner wall of the oil cylinder 2. In addition, the buffer 6 is arranged in the dust cover 5 to prevent dust from being adsorbed on the buffer 6 and entering the oil cylinder 2, thereby ensuring the use stability of the shock absorber 100.

[0087] Optionally, the inner and outer walls of the cylinder body 23 can be subjected to a variety of surface treatment processes such as polishing and grinding and electroplating (chrome) mirror, thereby effectively reducing the friction between the inner wall of the cylinder body 23 and the oil, and being able to effectively seal the oil and gas. At the same time, the friction between the outer wall of the cylinder body 23 and the side wall of the movable part 12 can be reduced, making the movable part 12 move more smoothly along the axial direction of the cylinder body 23, thereby improving the vibration reduction efficiency of the shock absorber 100.

[0088] According to the nitrogen vibration damping gas of the embodiment of the present invention, when the piston assembly 3 is in a static equilibrium state, the normally open oil path 41 connects the first chamber 21 and the upper accommodating chamber 1112, and the pressures of the second medium chamber 112 and the first medium chamber 113 are kept in a balanced state. At this time, the oil is in a static state, and the compression valve 442 and the recovery valve 445 are both in a closed state.

[0089] like Figure 11-Figure 12 As shown, during low-speed compression, the piston assembly 3 moves toward the cylinder barrel 11 and the moving distance is small, so that the pressure increase value in the first chamber 21 and the upper accommodating chamber 1112 is small. At this time, the recovery valve 445 and the compression valve 442 are both in a closed state, and the oil is transmitted from the first chamber 21 along the normally open oil path 41 into the upper accommodating chamber 1112, so that the pressure in the first medium chamber 113 increases, that is, the pressure of the first medium chamber 113 is greater than the pressure of the second medium chamber 112, so that the movable part 12 moves toward the second medium chamber 112, thereby reducing the pressure difference between the second medium chamber 112 and the first medium chamber 113. Since the pressure difference in the above process is small, the vibration reduction effect can be achieved by only opening the normally open oil path 41.

[0090] like Figure 15-16As shown, when the piston assembly 3 is restored at a low speed, the piston assembly 3 moves in a direction away from the cylinder barrel 11 and the moving distance is small, so the pressure reduction value of the first chamber 21 is small. Since the first chamber 21, the normally open oil path 41, and the upper accommodating chamber 1112 are connected, the pressure of the first medium chamber 113 is reduced, that is, the pressure of the first medium chamber 113 is less than the pressure of the second medium chamber 112, so that the movable member 12 moves toward the first medium chamber 113, thereby reducing the pressure difference between the second medium chamber 112 and the first medium chamber 113. At this time, the restoration valve 445 and the compression valve 442 are both in a closed state, and the oil in the first medium chamber 113 is transmitted to the first chamber 21 along the upper accommodating chamber 1112 and the normally open oil path 41. The oil pushes the piston assembly 3 to restore, and the tire can quickly contact the ground to generate grip, thereby improving the vehicle's passability.

[0091] like Figure 13-14 As shown, during high-speed compression, the piston assembly 3 moves toward the direction of the cylinder barrel 11 and the moving distance is large, so that the pressure increase value in the first chamber 21 and the first chamber 21 is large, and the compression valve 442 is controlled to open, so that the two ends of the compression oil circuit 42 are connected to the upper accommodating chamber 1112 and the first chamber 21, and the first chamber 21 is connected to the upper accommodating chamber 1112 through the normally open oil circuit 41. The compression oil circuit 42 and the normally open oil circuit 41 work simultaneously to quickly transfer the oil from the first chamber 21 to the upper accommodating chamber 1112, and the pressure of the first medium chamber 113 increases, that is, the pressure of the first medium chamber 113 is greater than the pressure of the second medium chamber 112, so that the movable part 12 moves toward the second medium chamber 112, thereby reducing the pressure difference between the second medium chamber 112 and the first medium chamber 113, thereby quickly attenuating the vehicle vibration and improving the comfort of the vehicle. Since the pressure difference in the above process is relatively large, a good vibration reduction effect cannot be achieved only by the normally open oil circuit 41 , and the compression oil circuit 42 needs to be opened as a supplement to the normally open oil circuit 41 .

[0092] Among them, the opening of the compression oil circuit 42 can be adjusted by the knob part 462. The knob part 462 is turned to make the protrusion 4621 of the knob part 462 fit into the groove 4611 corresponding to the seal 461, so that the gear mark 4622 can accurately correspond to the compression oil circuit 42 of the corresponding aperture, ensuring that the oil flow rate of the compression oil circuit 42 is different after the gear position is adjusted, so that the shock absorber 100 has different vibration reduction amplitudes, thereby improving the applicability of the shock absorber 100.

[0093] like Figure 17-Figure 18As shown, during high-speed recovery, the piston assembly 3 moves in a direction away from the cylinder barrel 11 and the moving distance is large, the pressure reduction value of the first chamber 21 is large, and the control recovery valve 445 is opened, so that the two ends of the recovery oil circuit 43 are connected to the upper accommodating chamber 1112 and the first chamber 21, and the first chamber 21 is connected to the upper accommodating chamber 1112 through the normally open oil circuit 41. The recovery oil circuit 43 and the normally open oil circuit 41 work simultaneously to quickly transfer the oil from the upper accommodating chamber 1112 to the first chamber 21, so that the first medium chamber 1 The pressure of the first medium chamber 113 is reduced, that is, the pressure of the first medium chamber 113 is much smaller than the pressure of the second medium chamber 112, so that the movable part 12 moves toward the first medium chamber 113, thereby reducing the pressure difference between the second medium chamber 112 and the first medium chamber 113, so that the oil is quickly transferred from the upper accommodating chamber 1112 to the first chamber 21, and the oil quickly pushes the piston assembly 3 to recover, so that the tire can quickly contact the ground, generate grip, improve vehicle passability, and avoid the idle travel problem caused by untimely oil return. Due to the large pressure difference in the above process, a good recovery effect cannot be achieved only by the normally open oil circuit 41, and it is necessary to open the recovery oil circuit 43 as a supplement to the normally open oil circuit 41.

[0094] The assembly process of the shock absorber 100 according to the embodiment of the present invention is as follows, and the order of the following assembly steps can be adjusted:

[0095] First, one end of the piston assembly 3 is extended into the cylinder body 23 along the axial direction of the cylinder body 23, and the cylinder cover 22 is passed through the other end of the piston assembly 3 and assembled on the end of the cylinder body 23; then the movable part 12 is coaxially installed in the cylinder body 17 and the cylinder 2 is coaxially penetrated on the movable part 12, and then the cylinder cover 16 is assembled on the cylinder body 17; then the valve seat 44, the valve core 45 and the knob assembly 46 are installed in sequence, wherein the regulating valve 4 and the cylinder assembly 1 are connected by threaded sealing, the valve core 45 is assembled into the cavity of the valve seat 44, and the end face is used as the axial direction limit, the sealing member 461 passes through the connecting rod head of the valve core 45 (the two have a limiting effect on each other) and is assembled to the cylinder assembly 1, and is connected to the cylinder assembly 1 by threaded sealing, and the knob member 462 passes through the valve core 45 and is fixed by screws; finally, the buffer member 6 is sleeved on the piston assembly 3, and the dust cover 5 is sleeved on the outer periphery of the piston assembly 3 and the cylinder 2.

[0096] A vehicle (not shown) according to an embodiment of a second aspect of the present invention comprises a shock absorber 100 according to an embodiment of the first aspect of the present invention.

[0097] According to the vehicle of the new embodiment of the present invention, by adopting the above-mentioned shock absorber 100, the vehicle has stronger compatibility, facilitates the compact arrangement and lightweighting of the suspension swing arm space, and thus can reduce the main suspension cost.

[0098] Other components and operations of the vehicle according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0099] In the description of the present invention, it is necessary to understand that the terms "center", "length", "thickness", "up", "down", "front", "back", "left", "right", "inside", "outside", "axial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0100] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0101] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0102] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A shock absorber, characterized in that: include: An oil cylinder, wherein a first chamber is formed in the oil cylinder; A piston assembly, one end of which extends into the first chamber, and the piston assembly is movable along the axial direction of the cylinder; A cylinder assembly, the cylinder assembly comprising a cylinder barrel, the cylinder barrel being sleeved on the outer peripheral side of the oil cylinder, and an accommodating cavity being jointly defined between the inner wall of the cylinder barrel and the outer wall of the oil cylinder; An oil passage, the oil passage is used to connect the first chamber and the accommodating chamber, the oil passage, the first chamber and the accommodating chamber form a damping adjustment chamber; A movable part, wherein the movable part is arranged in the damping adjustment chamber, the movable part divides the damping adjustment chamber into a first medium chamber and a second medium chamber, the movable part moves under the action of the piston assembly to adjust the volume of the second medium chamber, and the first medium chamber includes at least a part of the first chamber.

2. The shock absorber according to claim 1, characterized in that: The second medium chamber includes at least a portion of the accommodating cavity.

3. The shock absorber according to claim 2, characterized in that: The movable part is arranged in the accommodating chamber, and the movable part divides the accommodating chamber into an upper accommodating chamber and a lower accommodating chamber. The upper accommodating chamber constitutes the second medium chamber, and the lower accommodating chamber, the oil passage and the first chamber constitute the first medium chamber.

4. The shock absorber according to claim 1, characterized in that: The first medium chamber is used to be filled with a first medium, and the second medium chamber is used to be filled with a second medium, and the first medium is different from the second medium.

5. The shock absorber according to claim 4, characterized in that The first medium is oil, and the second medium is an elastic member.

6. The vibration absorber according to claim 4, characterized in that: The first medium is oil, and the second medium is inert gas.

7. The shock absorber according to any one of claims 1 to 6, characterized in that: The oil cylinder and the cylinder barrel are coaxially arranged.

8. The shock absorber according to claim 3, characterized in that: The cylinder barrel includes a cylinder body and a cylinder head, wherein the cylinder head is arranged at one axial end of the cylinder body, and the cylinder head and the cylinder body jointly define the accommodating cavity, an air inlet hole is formed on the cylinder head, and the upper accommodating chamber is connected with the outside through the air inlet hole.

9. The vibration absorber according to claim 3, characterized in that: The cylinder assembly also includes a bushing connection seat, which is connected to the oil cylinder and is used to connect the shock absorber to the vehicle body / wheel. The cylinder barrel and the bushing connection seat are an integrally formed part, and the oil channel is formed in the bushing connection seat.

10. The vibration absorber according to claim 9, characterized in that A mounting groove is formed on the bushing connection seat, and the mounting groove is communicated with the accommodating cavity and the oil channel respectively. One end of the oil cylinder is fitted in the mounting groove, and the inner diameter of the mounting groove is smaller than the outer diameter of the cylinder barrel.

11. The shock absorber according to claim 1, characterized in that Also includes: A regulating valve is provided on the oil passage and is used for regulating the flow of the medium in the first medium chamber.

12. The shock absorber according to claim 11, characterized in that The regulating valve is a solenoid valve.

13. The shock absorber according to claim 11, characterized in that The regulating valve is a rotary damping valve.

14. The shock absorber according to claim 13, characterized in that The regulating valve comprises a normally open oil circuit, at least one compression oil circuit and at least one recovery oil circuit, both ends of the normally open oil circuit are respectively communicated with the first chamber and the lower accommodating chamber, a compression valve is provided on the compression oil circuit to control the connection and disconnection of the compression oil circuit with the first chamber and the lower accommodating chamber, and a restoration valve is provided on the recovery oil circuit to control the connection and disconnection of the recovery oil circuit with the first chamber and the lower accommodating chamber.

15. The shock absorber according to claim 14, characterized in that The regulating valve comprises: a valve seat, wherein the valve seat is formed with a first compression oil section, a first normally open oil section and a first recovery oil section, the first compression oil section is provided with the compression valve, and the first recovery oil section is provided with the recovery valve; a valve core, one end of which extends into the valve seat, the valve core being formed with a second compression oil section, a second normally open oil section, and a second re-oil section, the second compression oil section being connected to the first compression oil section and constituting the compression oil circuit, the second normally open oil section being connected to the first normally open oil section and constituting the normally open oil circuit, and the second re-oil section being connected to the first re-oil section and constituting the re-oil circuit; A knob assembly is sleeved on the other end of the valve core. When the knob assembly rotates, it drives the valve core to rotate so that the second compression oil section is connected to the first compression oil section or the second re-oil section is connected to the first re-oil section.

16. The shock absorber according to claim 15, characterized in that There are a plurality of the compression oil circuits and the recovery oil circuits, the plurality of recovery oil circuits are arranged at intervals in the circumferential direction of the plurality of compression oil circuits, and the aperture of each recovery oil circuit is larger than the aperture of each compression oil circuit.

17. The shock absorber according to claim 16, characterized in that At least two of the plurality of compression oil passages have different hole diameters.

18. The shock absorber according to claim 17, characterized in that The knob assembly includes a sealing member and a knob member, wherein the sealing member is arranged between the valve core and the knob member, the sealing member is formed with a plurality of grooves, and the knob member is provided with a plurality of protrusions and a plurality of gear position markings, wherein the plurality of protrusions and the plurality of gear position markings are respectively located on both sides of the thickness direction of the knob member, wherein the plurality of protrusions correspond one-to-one to the plurality of grooves, and the protrusions are fitted in the grooves, and the plurality of gear position markings correspond one-to-one to the plurality of protrusions.

19. A vehicle, characterized in that: Comprising a vibration absorber according to any one of claims 1-18.

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