Damping adjusting module, shock absorber, suspension system, and vehicle

Abstract

A vehicle (500), comprising a damping adjustment module (100), and a shock absorber (200) or a suspension system (400). The damping adjustment module (100) comprises a valve body (1), and an overflow valve seat (2), an overflow valve body (6), an overflow valve plate (3), a guide rod (4) and a first elastic piece (5) that are all arranged in the valve body (1), wherein the overflow valve body (6) is movably arranged in a valve cavity (21) defined by the overflow valve seat (2) and the valve body (1); the overflow valve plate (3) is movably arranged between the overflow valve body (6) and the overflow valve seat (2); the guide rod (4) movably penetrates through the overflow valve seat (2) and the overflow valve plate (3), and is provided with a first abutting part (41) located on the side of the overflow valve seat (2) away from the overflow valve plate (3) and a second abutting part (42) located on the side of the overflow valve plate (3) away from the overflow valve seat (2); and the first elastic piece (5) abuts between the first abutting part (41) and the overflow valve seat (2), so that the second abutting part (42) presses the overflow valve plate (3) on the overflow valve seat (2).

Description

Damping adjustment modules, shock absorbers, suspension systems and vehicles

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on December 29, 2023, with application number 202323660468.7 and titled “Damping Adjustment Module, Shock Absorber, Suspension System and Vehicle,” the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present disclosure relates to the field of vehicle technology, and in particular to a damping adjustment module, a shock absorber, a suspension system and a vehicle. Background Art

[0004] Shock absorbers are installed in the wheel area of ​​a car to reduce the bumps of the car during driving. When the car body and the wheel move relative to each other, the piston in the shock absorber moves up and down, and the oil in the shock absorber cavity repeatedly flows from one cavity to another through different pores, converting the vibration energy into heat energy of the oil and gas and dissipating it into the atmosphere, so that the shock absorber can operate efficiently within a lower temperature range. In the related art, the shock absorber includes a solenoid valve, which is provided with a valve seat and a valve plate. The connection reliability of the valve seat and the valve plate is poor, which is not conducive to the normal use of the solenoid valve. In addition, the solenoid valve has a complex structure and is difficult to produce, which reduces the production efficiency of the solenoid valve.

[0005] Public content

[0006] The present disclosure aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present disclosure is to provide a damping adjustment module in which the overflow valve plate can stably abut against the overflow valve seat, simplify the structure of the damping adjustment module, reduce production difficulty, and improve production efficiency.

[0007] A second objective of the present disclosure is to provide a shock absorber using the damping adjustment module.

[0008] A third object of the present disclosure is to provide a suspension system using the above-mentioned shock absorber.

[0009] A fourth object of the present disclosure is to provide a vehicle employing the above suspension system.

[0010] According to the damping adjustment module of the first aspect embodiment of the present disclosure, it includes: a valve body; an overflow valve seat, which is arranged in the valve body, and the overflow valve seat and the valve body jointly define a valve cavity; a overflow valve body, which is movably arranged in the valve cavity; an overflow valve plate, which is movably arranged between the overflow valve body and the overflow valve seat; a guide rod, which is movably passed through the overflow valve seat and the overflow valve plate, and the guide rod has a first abutment portion and a second abutment portion, the first abutment portion is located on a side of the overflow valve seat away from the overflow valve plate, and the second abutment portion is located on a side of the overflow valve plate away from the overflow valve seat; a first elastic member, which stops between the first abutment portion and the overflow valve seat, so that the second abutment portion presses the overflow valve plate against the overflow valve seat.

[0011] According to the damping adjustment module of the embodiment of the present disclosure, through the combined action of the first elastic member and the guide rod, the first elastic member acts on the first abutting portion so that the second abutting portion can act downward on the overflow valve plate to push the overflow valve plate and the overflow valve seat to abut against each other, thereby sealing the gap between the overflow valve plate and the upper end surface of the overflow valve seat, thereby making it difficult for fluid, such as oil, within the overflow valve seat to flow out of the gap between the overflow valve plate and the overflow valve seat, thereby facilitating the normal use of the damping adjustment module. In addition, the guide rod and the first elastic member have a simple structure, which can simplify the structure of the damping adjustment module, reduce the production difficulty of the damping adjustment module, and improve the production efficiency of the damping adjustment module.

[0012] According to some embodiments of the present disclosure, an overflow valve cavity is formed on the side of the overflow valve seat facing away from the overflow valve plate, the first abutment portion is located in the overflow valve cavity, the first elastic member is stopped between the first abutment portion and the inner wall of the overflow valve cavity, and the second abutment portion is located outside the overflow valve cavity.

[0013] According to some embodiments of the present disclosure, the guide rod includes: a guide rod body, the second abutting portion is arranged at one end of the guide rod body adjacent to the overflow valve plate; a limiting member, the limiting member is located in the overflow valve cavity, the other end of the guide rod body passes through the overflow valve plate and the overflow valve seat and is connected to the limiting member, and the limiting member constitutes the first abutting portion.

[0014] According to some embodiments of the present disclosure, a through hole for passing the guide rod body is formed on the overflow valve seat, and the guide rod body and the through hole are slidingly and sealingly matched.

[0015] According to some embodiments of the present disclosure, the limiting member is a limiting nut, and the limiting member is threadedly connected to the other end of the guide rod body.

[0016] According to some embodiments of the present disclosure, the second abutting portion and the guide rod body are integrally formed.

[0017] According to some embodiments of the present disclosure, the first elastic member is a spring, and the first elastic member is sleeved outside the guide rod.

[0018] According to some embodiments of the present disclosure, a first pressure-bearing cavity is defined between the overflow valve disc and the overflow valve body, and a second pressure-bearing cavity is defined between the overflow valve disc and the overflow valve seat. The surface of the overflow valve disc corresponding to the first pressure-bearing cavity is a first pressure-bearing surface, and the surface of the overflow valve disc corresponding to the second pressure-bearing cavity is a second pressure-bearing surface. The area of ​​the first pressure-bearing surface is smaller than the area of ​​the second pressure-bearing surface. The overflow valve body is movable between a first position and a second position. When the overflow valve body is located at the first position, two sides of the overflow valve disc abut against the overflow valve body and the overflow valve seat respectively. When the overflow valve body is located at the second position, the overflow valve disc is separated from at least one of the overflow valve body or the overflow valve seat.

[0019] According to some embodiments of the present disclosure, a projection surface of the overflow valve body on the overflow valve plate along the thickness direction of the overflow valve plate is the first pressure-bearing surface.

[0020] According to some embodiments of the present disclosure, a fluid groove is formed on the side of the overflow valve seat facing the overflow valve plate, and the second pressure-bearing cavity is defined between the fluid groove and the overflow valve plate, and the surface of the overflow valve plate corresponding to the fluid groove is the second pressure-bearing surface.

[0021] According to some embodiments of the present disclosure, at least one through groove is formed on a side wall of the fluid groove, and the through groove communicates with the fluid groove and the outside of the overflow valve seat.

[0022] According to some embodiments of the present disclosure, an overflow valve cavity is formed on the side of the overflow valve seat facing away from the overflow valve plate, and at least one first connecting hole is formed on the bottom wall of the fluid groove, and the first connecting hole connects the fluid groove and the overflow valve cavity.

[0023] According to some embodiments of the present disclosure, the valve further includes: a second elastic member, the second elastic member is stopped between the second abutting portion and the overflow valve body, and the second elastic member usually pushes the overflow valve body in a direction away from the overflow valve seat.

[0024] According to some embodiments of the present disclosure, when the relief valve body is only acted upon by the elastic force of the second elastic member, the relief valve body and the relief valve seat are spaced apart from each other to form a flow channel.

[0025] According to some embodiments of the present disclosure, the second elastic member is a spring, and the second elastic member is sleeved outside the guide rod.

[0026] The shock absorber according to the second embodiment of the present disclosure includes the damping adjustment module according to the first embodiment described above.

[0027] According to some embodiments of the present disclosure, a compression chamber and a restoring chamber are defined in the shock absorber, the compression chamber and the restoring chamber are connected through an outlet on the valve body of the damping adjustment module, the compression chamber is connected to the overflow valve chamber of the damping adjustment module, and the overflow valve body of the damping adjustment module is used to adjust the flow damping between the compression chamber and the outlet.

[0028] A suspension system according to an embodiment of the third aspect of the present disclosure includes the shock absorber according to the embodiment of the second aspect.

[0029] The vehicle according to the fourth aspect of the present disclosure includes the damping adjustment module according to the first aspect, the shock absorber according to the second aspect, or the suspension system according to the third aspect.

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

[0031] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0032] FIG1 is a schematic diagram of a shock absorber according to the present disclosure;

[0033] FIG2 is an enlarged view of the circled portion A in FIG1 ;

[0034] FIG3 is a schematic diagram of a guide rod of a damping adjustment module according to the present disclosure;

[0035] FIG4 is a schematic diagram of a limiter of a damping adjustment module according to the present disclosure;

[0036] FIG5 is a schematic diagram of a relief valve plate of a damping adjustment module according to the present disclosure;

[0037] FIG6 is a schematic diagram of a relief valve seat of a damping adjustment module according to the present disclosure;

[0038] 7 is an assembly diagram of a relief valve seat, a relief valve plate, and a guide rod of a damping adjustment module according to the present disclosure;

[0039] FIG8 is an assembled side view of the overflow valve seat, overflow valve plate, and guide rod of the damping adjustment module according to the present disclosure, wherein the overflow valve plate and the overflow valve seat abut against each other;

[0040] FIG9 is an assembly cross-sectional view of the overflow valve seat, overflow valve plate, and guide rod of the damping adjustment module according to the present disclosure, wherein the overflow valve plate and the overflow valve seat abut against each other;

[0041] 10 is an assembled side view of a relief valve seat, a relief valve plate, and a guide rod of a damping adjustment module according to the present disclosure, wherein the relief valve plate and the relief valve seat are spaced apart;

[0042] 11 is an assembled cross-sectional view of a relief valve seat, a relief valve plate, and a guide rod of a damping adjustment module according to the present disclosure, wherein the relief valve plate and the relief valve seat are spaced apart;

[0043] FIG12 is a schematic diagram of a core cover of a damping adjustment module according to the present disclosure;

[0044] FIG13 is a cross-sectional view of a core cover of a damping adjustment module according to the present disclosure;

[0045] FIG14 is a schematic diagram of the assembly of the core cover and the pilot valve plug of the damping adjustment module according to the present disclosure;

[0046] FIG15 is an assembly cross-sectional view of the core cover and the pilot valve plug of the damping adjustment module according to the present disclosure;

[0047] FIG16 is a schematic diagram of a relief valve body of a damping adjustment module according to the present disclosure;

[0048] FIG17 is a cross-sectional view of a relief valve body of a damping adjustment module according to the present disclosure;

[0049] FIG18 is a cross-sectional view of a relief valve body of a damping adjustment module according to the present disclosure from another angle;

[0050] FIG19 is a schematic diagram of a first valve body of a damping adjustment module according to the present disclosure;

[0051] FIG20 is a cross-sectional view of a first valve body of a damping adjustment module according to the present disclosure;

[0052] FIG21 is a schematic diagram of a second valve body of a damping adjustment module according to the present disclosure;

[0053] FIG22 is a schematic diagram of a valve body of a damping adjustment module according to the present disclosure;

[0054] FIG23 is a cross-sectional view of a valve body of a damping adjustment module according to the present disclosure;

[0055] FIG24 is a schematic diagram of a shock absorber according to the present disclosure, wherein the shock absorber is in a state where the piston rod vibrates downward;

[0056] FIG25 is a schematic diagram of a shock absorber according to the present disclosure, wherein the shock absorber is in a state where the piston rod vibrates upward.

[0057] FIG26 is a schematic block diagram of a suspension system according to the present disclosure;

[0058] FIG27 is a schematic block diagram of a vehicle according to the present disclosure;

[0059] FIG28 is another schematic block diagram of a vehicle according to the present disclosure;

[0060] FIG. 29 is yet another schematic block diagram of a vehicle according to the present disclosure.

[0061] Reference numerals:

[0062] 100. Damping adjustment module;

[0063] 1. Valve body; 11. First valve body; 111. Conical boss;

[0064] 112. External thread structure; 113. Sink;

[0065] 12. Second valve body; 121. Inlet; 122. Outlet;

[0066] 123, first external thread; 124, second internal thread;

[0067] 13. Second through hole; 131. Second guide sleeve; 14. Raised rib; 15. Matching groove;

[0068] 2. Overflow valve seat; 21. Valve cavity; 22. Overflow valve cavity; 23. Perforation;

[0069] 24, second external thread; 25, fluid groove; 251, through groove; 252, first communicating hole;

[0070] 3. Overflow valve plate; 31. Second communication hole; 32. Valve plate through hole;

[0071] 33. Second pressure-bearing cavity; 34. First pressure-bearing surface; 35. Second pressure-bearing surface;

[0072] 4. Guide rod; 41. First abutting portion; 42. Second abutting portion;

[0073] 43. Guide rod body; 44. Limiting member; 5. First elastic member;

[0074] 6. Overflow valve body; 61. Flow channel; 62. Valve port;

[0075] 63. Oil circulation channel; 64. First pressure-bearing chamber;

[0076] 7. Second elastic member; 8. Piston rod; 81. Internal thread structure;

[0077] 9. Drive assembly; 91. Magnetic core; 911. Mounting slot; 912. Spring;

[0078] 913, side trough ventilation channel; 914, ventilation side hole;

[0079] 92, core cover; 921, first boss; 922, groove;

[0080] 923, second boss; 924, first guide sleeve;

[0081] 93. Coil assembly; 931. Coil support;

[0082] 9311, line trough; 9312, center column; 932, coil cap;

[0083] 94. Magnetic isolation ring; 941. Sink structure; 942. Sealing ring assembly groove;

[0084] 943, sealing ring; 944, first through hole;

[0085] 10. Pilot valve plug;

[0086] 200, shock absorber; 201, piston valve; 2011, first internal thread;

[0087] 202, outer shell; 203, inner shell; 2031, liquid storage chamber;

[0088] 204, bottom valve; 205, compression chamber; 206, recovery chamber;

[0089] 400, suspension system;

[0090] 500. Vehicle. DETAILED DESCRIPTION

[0091] The embodiments of the present disclosure are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The damping adjustment module 100 according to the first embodiment of the present disclosure is described below with reference to Figures 1 to 23. In the following description of this application, the damping adjustment module 100 is used in a shock absorber 200 as an example.

[0092] As shown in Figures 1 and 2, the damping adjustment module 100 according to the embodiment of the first aspect of the present disclosure includes a valve body 1, a relief valve seat 2, a relief valve body 6, a relief valve plate 3, a guide rod 4 and a first elastic member 5.

[0093] Specifically, the relief valve seat 2 is disposed within the valve body 1. The relief valve seat 2 and the valve body 1 together define a valve chamber 21. The relief valve body 6 is movably disposed within the valve chamber 21. The relief valve disc 3 is movably disposed between the relief valve body 6 and the relief valve seat 2. For example, in the examples of Figures 1 and 2, the valve body 1 is arranged in a vertical direction, the relief valve seat 2 is located at the lower portion of the valve body 1, the relief valve body 6 is located above the relief valve seat 2, and the relief valve disc 3 is movable in the vertical direction between the relief valve body 6 and the relief valve seat 2. As a result, the valve chamber 21 can be used to accommodate the relief valve disc 3, the relief valve body 6, and other components, thereby effectively utilizing the space within the valve body 1.

[0094] The guide rod 4 can movably penetrate the overflow valve seat 2 and the overflow valve disc 3. The guide rod 4 has a first abutment portion 41 and a second abutment portion 42. The first abutment portion 41 is located on the side of the overflow valve seat 2 away from the overflow valve disc 3, and the second abutment portion 42 is located on the side of the overflow valve disc 3 away from the overflow valve seat 2. The first elastic member 5 stops between the first abutment portion 41 and the overflow valve seat 2, so that the second abutment portion 42 presses the overflow valve disc 3 onto the overflow valve seat 2.

[0095] For example, in the examples of Figures 1 to 3, the guide rod 4 extends in the up and down directions, the lower end of the guide rod 4 passes through the overflow valve plate 3 and the overflow valve seat 2 and extends into the overflow valve seat 2, the first abutment portion 41 is located on the side of the overflow valve seat 2 away from the overflow valve plate 3, the second abutment portion 42 is located on the side of the overflow valve plate 3 away from the overflow valve seat 2, the upper end of the first elastic member 5 abuts against the overflow valve seat 2, and the lower end of the first elastic member 5 abuts against the first abutment portion 41. Thus, the elastic force of the first elastic member 5 acts on the first abutting portion 41 to push the first abutting portion 41 to move downward, thereby allowing the second abutting portion 42 to act downward on the relief valve disc 3 to push the relief valve disc 3 and the relief valve seat 2 to abut against each other, thereby sealing the gap between the relief valve disc 3 and the upper end surface of the relief valve seat 2, thereby preventing the fluid in the relief valve seat 2, such as oil, from flowing out of the gap between the relief valve disc 3 and the relief valve seat 2, thereby facilitating the normal use of the damping adjustment module 100. In addition, the guide rod 4 and the first elastic member 5 have a simple structure, thereby simplifying the structure of the damping adjustment module 100, reducing the production difficulty of the damping adjustment module 100, and improving the production efficiency of the damping adjustment module 100.

[0096] According to the damping adjustment module 100 of the embodiment of the present disclosure, through the combined action of the first elastic member 5 and the guide rod 4, the first elastic member 5 acts on the first abutting portion 41 so that the second abutting portion 42 can act downward on the overflow valve plate 3 to push the overflow valve plate 3 and the overflow valve seat 2 to stop each other, thereby sealing the gap between the overflow valve plate 3 and the upper end surface of the overflow valve seat 2, thereby making it difficult for the fluid in the overflow valve seat 2, such as oil, to flow out of the gap between the overflow valve plate 3 and the overflow valve seat 2, thereby facilitating the normal use of the damping adjustment module 100. In addition, the guide rod 4 and the first elastic member 5 have a simple structure, thereby simplifying the structure of the damping adjustment module 100, reducing the production difficulty of the damping adjustment module 100, and improving the production efficiency of the damping adjustment module 100.

[0097] According to some embodiments of the present disclosure, in conjunction with Figures 1 and 2 , a relief valve cavity 22 is formed on the side of the relief valve seat 2 facing away from the relief valve disc 3, a first abutting portion 41 is located within the relief valve cavity 22, a first elastic member 5 abuts between the first abutting portion 41 and the inner wall of the relief valve cavity 22, and a second abutting portion 42 is located outside the relief valve cavity 22. For example, in the examples of Figures 1-3 , the lower end of the guide rod 4 extends into the relief valve cavity 22, the first elastic member 5 abuts between the upper inner wall of the relief valve cavity 22 and the upper surface of the first abutting portion 41, and the second abutting portion 42 is located above the relief valve cavity 22. This arrangement can effectively utilize the space inside the relief valve seat 2, making the layout of the relief valve disc 3 and the guide rod 4 reasonable, saving space in the vertical direction of the damping adjustment module 100, and allowing the damping adjustment module 100 to be manufactured more compactly. Moreover, the fluid can flow into the overflow valve chamber 22, which is beneficial to the flow of the fluid inside the damping adjustment module 100. In addition, the weight of the overflow valve seat 2 can be reduced, which is beneficial to the use of the overflow valve seat 2.

[0098] According to some embodiments of the present disclosure, referring to Figures 1-3, the guide rod 4 includes a guide rod body 43 and a stopper 44. The second abutment 42 is provided at one end of the guide rod body 43 adjacent to the relief valve disc 3. The stopper 44 is located within the relief valve cavity 22. The other end of the guide rod body 43 passes through the relief valve disc 3 and the relief valve seat 2 and is connected to the stopper 44. The stopper 44 constitutes the first abutment 41.

[0099] For example, in the examples of Figures 1 to 3, the second abutment portion 42 is provided at the upper end of the guide rod body 43, and the lower end of the guide rod body 43 passes through the overflow valve plate 3 and the overflow valve seat 2 and is connected to the limiter 44, where the limiter 44 is also the first abutment portion 41. In other words, the guide rod body 43 can have the first abutment portion 41, or the guide rod body 43 is connected to the limiter 44, and the limiter 44 is the first abutment portion 41. As a result, the structure of the guide rod body 43 is simple and the production and processing are convenient, thereby simplifying the structure of the damping adjustment module 100 and reducing the production difficulty of the damping adjustment module 100. In addition, the separate arrangement of the guide rod body 43 and the limiter 44 facilitates the processing of the guide rod body 43 and the limiter 44, improves the processing accuracy, and thus improves the processing accuracy of the damping adjustment module 100. Moreover, it is also beneficial to the assembly and disassembly of the guide rod body 43 and the limiter 44 , so as to facilitate the assembly of the guide rod 4 with the overflow valve plate 3 and the overflow valve seat 2 , thereby improving the assembly efficiency of the damping adjustment module 100 .

[0100] According to some embodiments of the present disclosure, in conjunction with Figures 1 and 6, a through-hole 23 for passing the guide rod body 43 is formed on the overflow valve seat 2, and the guide rod body 43 and the through-hole 23 are slidably sealed. For example, in the examples of Figures 1 and 6, the through-hole 23 passes through the inner surface and the outer surface of the upper side wall of the overflow valve seat 2 in the up-down direction. With such a configuration, the through-hole 23 has a positioning and limiting effect on the guide rod body 43, which is conducive to the rapid positioning of the guide rod body 43 and the overflow valve seat 2, and can also reduce the radial shaking of the guide rod body 43 in the overflow valve seat 2, thereby facilitating the rapid assembly of the guide rod body 43 and the overflow valve seat 2, and also improving the stability of the guide rod body 43 in use. In addition, by setting up a sliding seal between the outer peripheral surface of the guide rod body 43 and the inner wall surface of the perforation 23, it is beneficial for the guide rod body 43 to move up and down along the perforation 23. At the same time, the fluid in the overflow valve chamber 22 is not easy to flow between the guide rod body 43 and the perforation 23, thereby improving the assembly sealing between the guide rod body 43 and the overflow valve plate 3 and the overflow valve seat 2.

[0101] Optionally, referring to Figures 1-4 , the stopper 44 can be configured as a stopper nut, threadedly connected to the other end of the guide rod body 43. For example, in the example shown in Figures 1-4 , the stopper nut is threadedly connected to the lower end of the guide rod body 43. The outer circumferential area of ​​the stopper nut is larger than the cross-sectional area of ​​the perforation 23, thereby retaining the stopper nut within the relief valve seat 2 when the first elastic member 5 is compressed. This arrangement simplifies and improves assembly efficiency during the assembly of the stopper 44 and the guide rod body 43, and also facilitates disassembly of the stopper 44 and the guide rod body 43. Furthermore, the stopper nut is relatively inexpensive to use, thereby reducing the production cost of the damping adjustment module 100. However, this is not intended to be limiting.

[0102] According to some embodiments of the present disclosure, in conjunction with Figures 1 and 2 , the second abutting portion 42 and the guide rod body 43 are integrally formed. For example, in the examples of Figures 1 , 2 , and 5 , the cross-sectional area of ​​the outer circumferential surface of the second abutting portion 42 is larger than the cross-sectional area of ​​the outer circumferential surface of the guide rod body 43. The guide rod body 43 is penetrated by the overflow valve plate 3 , which is formed with a valve plate through hole 32. The cross-sectional area of ​​the outer circumferential surface of the second abutting portion 42 is larger than the cross-sectional area of ​​the valve plate through hole 32. The second abutting portion 42 extends circumferentially along the guide rod body 43. The cross-sectional shape of the integrally formed guide rod body 43 and the second abutting portion 42 is a "cross" shape. This arrangement improves the connection stability between the guide rod body 43 and the second abutting portion 42, thereby further facilitating the use of the guide rod body 43 and improving the stability of the guide rod 4. In addition, it is convenient for the production, processing, and use of the guide rod 4. In addition, the second abutment portion 42 is not easy to pass through the valve plate through hole 32, that is, the overflow valve plate 3 can limit the downward movement of the second abutment portion 42, so that the second abutment portion 42 can be maintained above the overflow valve plate 3, thereby improving the reliability of the second abutment portion 42.

[0103] According to some embodiments of the present disclosure, with reference to FIG1 and FIG2 , the first elastic member 5 can be configured as a spring, and the first elastic member 5 is sleeved outside the guide rod 4. For example, in the examples of FIG1 and FIG2 , the first elastic member 5 extends in the up-down direction, and the first elastic member 5 is sleeved on the outer peripheral side of the guide rod 4. With such a configuration, the guide rod 4 has a guiding effect on the first elastic member 5, which is beneficial to the compression and recovery of the first elastic member 5, thereby improving the reliability of the use of the first elastic member 5, and can also reduce the deflection of the first elastic member 5 during the compression process, so as to facilitate the normal use of the first elastic member 5. In addition, the use cost of the spring is low, thereby further simplifying the structure of the damping adjustment module 100 and further reducing the use cost of the damping adjustment module 100.

[0104] According to some embodiments of the present disclosure, in conjunction with Figures 1, 2, and 16, the damping adjustment module 100 further includes a second elastic member 7, which abuts between the second abutting portion 42 and the relief valve body 6. The second elastic member 7 constantly pushes the relief valve body 6 in a direction away from the relief valve seat 2. For example, in the example of Figure 1, the relief valve body 6 can move in the vertical direction within the valve cavity 21. The relief valve body 6 is located above the relief valve disc 3, and the second elastic member 7 abuts between the relief valve disc 3 and the inner wall surface of the relief valve body 6.

[0105] With this arrangement, when the second elastic member 7 acts on the relief valve body 6, the second elastic member 7 can push the relief valve body 6 upward, so that the lower end surface of the relief valve body 6 is spaced apart from the relief valve disc 3. At the same time, the second elastic member 7 can act on the relief valve disc 3 through the second abutting portion 42, and the second abutting portion 42 acts on the relief valve disc 3 to cause the relief valve disc 3 to abut against the relief valve seat 2. With this arrangement, the second elastic member 7 acts on the relief valve body 6 to constantly push the relief valve body 6 away from the relief valve seat 2 (i.e., the damping adjustment module 100 is a normally open valve), allowing the fluid inside the damping adjustment module 100 to flow out from between the relief valve body 6 and the relief valve disc 3 to adjust and control the damping force, thereby facilitating normal use of the damping adjustment module 100.

[0106] According to some embodiments of the present disclosure, in combination with Figures 1 and 2, when the overflow valve body 6 is only acted upon by the elastic force of the second elastic member 7, the overflow valve body 6 and the overflow valve seat 2 are spaced apart from each other to form a circulation channel 61. It should be noted that the above-mentioned circulation channel 61 refers to the space between the overflow valve body 6 and the overflow valve disc 3, or the space between the overflow valve disc 3 and the upper side of the overflow valve seat 2. For example, when the overflow valve disc 3 is resting on the overflow valve seat 2, the circulation channel 61 refers to the space between the lower side of the overflow valve body 6 and the upper surface of the overflow valve disc 3. When the lower surface of the overflow valve disc 3 is spaced apart from the upper side of the overflow valve seat 2, the circulation channel 61 refers to the space between the lower surface of the overflow valve disc 3 and the upper side of the overflow valve seat 2. Thus, the relief valve body 6 and the relief valve plate 3 can be kept in a normally spaced state by the second elastic member 7 acting solely on the relief valve body 6. That is, the flow channel 61 is kept in a normally open state, thereby facilitating the smooth flow of fluid through the fluid channel and out of the relief valve body 6. Furthermore, the second elastic member 7 is simple to use and has a low cost, which facilitates the normal use of the damping adjustment module 100.

[0107] According to some embodiments of the present disclosure, the second elastic member 7 is a spring, and the second elastic member 7 is at least partially sleeved outside the guide rod 4. For example, in the examples of Figures 1 and 2, the second elastic member 7 extends in the up-down direction, and the second elastic member 7 is sleeved on the outer peripheral side of the upper end of the guide rod 4. With such an arrangement, the guide rod 4 has a guiding effect on the second elastic member 7, which is beneficial to the compression and recovery of the second elastic member 7, thereby improving the reliability of the use of the second elastic member 7, and can also reduce the deflection of the second elastic member 7 during the compression process, so as to facilitate the normal use of the second elastic member 7. In addition, the cost of using the spring is low, thereby further simplifying the structure of the damping adjustment module 100 and further reducing the cost of using the damping adjustment module 100.

[0108] According to some optional embodiments of the present disclosure, in combination with Figure 1, the damping adjustment module 100 includes a piston rod 8, which is connected to the valve body 1 and is located on the side of the valve body 1 away from the inlet 121. The piston rod 8 is a hollow rotating body, and the inner side wall of its lower part is provided with an internal thread structure 81 for threaded connection with the valve body 1. The damping adjustment module 100 further includes a drive assembly 9, which is arranged in the piston rod 8. The drive assembly 9 is used to drive the pilot valve plug 10 to drive the overflow valve body 6 to move toward the overflow valve plate 3, so that the lower end face of the overflow valve body 6 abuts against the overflow valve plate 3. The drive assembly 9 includes a magnetic core 91, an iron core cover 92, a coil assembly 93, a magnetic isolation ring 94, and a sealing ring 943. The coil assembly 93 includes a coil bracket 931 and a coil cover cap 932. A coil, such as a copper wire, is wound around the outside of the coil bracket 931. Both ends of the copper wire are placed through the line groove 9311 of the coil bracket 931 and pass through the side groove of the coil cap 932 (not shown in the figure). The center hole of the coil cap 932 is then placed on the center column 9312 of the coil bracket 931, thereby fixing the copper wire on the line groove 9311.

[0109] For example, in the example of Figure 1, the bottom surface of the coil cap 932 abuts the top surface of the core cover 92. When the coil is energized, the magnetic lines of force are conducted through the coil cap 932, the core cover 92, and the magnetic valve body 1, forming a strong magnetic force, which drives the magnetic core 91 to attract the valve body 1. The core cover 92 is a rotating body structure. A circular first boss 921 is provided on the top of the core cover 92. The first boss 921 positions the coil cap 932 and the coil bracket 931. The inner cavity of the core cover 92 is a rotating body structure with two grooves 922 formed therein. A second boss 923 is also provided radially on the outer side of the core cover 92. A first guide sleeve 924 is provided in one of the two grooves 922 away from the inlet 121. The outer wall of the first guide sleeve 924 is formed with at least a first fluid groove (not shown in the figure) as a channel for the flow of oil or gas.

[0110] For example, in the example of FIG1 , the upper end of the pilot valve plug 10 is movably engaged with the first guide sleeve 924, and the other end of the pilot valve plug 10 passes through the magnetic core 91 and the valve body 1 and then movably engages with the relief valve body 6. The magnetic core 91 is disposed within the core cover 92, and the outer circumference of the magnetic core 91 is loosely engaged with the inner circumference of the core cover 92. The magnetic core 91 is movable along the axial direction of the core cover 92, and the magnetic core 91 is fixedly connected to the pilot valve plug 10. The magnetic core 91 is provided with mounting grooves 911 on the upper and lower sides, respectively. Springs 912 are installed in the mounting grooves 911. The upper and lower springs 912 allow the magnetic core 91 to be statically suspended in an upward and downward direction. The sidewalls of the magnetic core 91 are provided with multiple side groove ventilation channels 913 in the axial direction, and multiple ventilation side holes 914 in the radial direction. The axial side groove ventilation channels 913 and the radial ventilation side holes 914 of the sidewalls of the magnetic core 91 are interconnected. The pilot valve plug 10 is a rotating body structure with an inclined or curved bottom surface, which is used to seal the valve port 62 of the relief valve body 6. In the description of this disclosure, "multiple" means two or more than two.

[0111] According to some optional embodiments of the present disclosure, in conjunction with FIG1 , the magnetic isolation ring 94 is a rotating body structure, and a recessed groove structure 941 is provided on the upper and lower sides of the magnetic isolation ring 94. The recessed groove structure 941 is used to seal the core cover 92 and the valve body 1, and accurately radially position the core cover 92 and the valve body 1. A second boss 923 is provided radially on the outer side of the core cover 92 adjacent to the damping adjustment module 100. The outer side of the second boss 923 is interference-fitted with the inner side wall of the recessed groove structure 941 on the upper part of the magnetic isolation ring 94. The interference sealing surface can seal the mating area between the core cover 92 and the magnetic isolation ring 94 to prevent leakage. The bottom surface of the second boss 923 axially abuts the bottom surface of the recessed groove structure 941 of the magnetic isolation ring 94. A sealing ring assembly groove 942 is provided on the outer wall of the magnetic isolation ring 94. A sealing ring 943 is provided in the sealing ring assembly groove 942. The sealing ring 943 can seal the gap between the outer wall of the magnetic isolation ring 94 and the inner wall of the piston rod 8. A first through hole 944 is formed on the magnetic isolation ring 94 , and the magnetic core 91 passes through the first through hole 944 to approach or move away from the valve body 1 .

[0112] According to some optional embodiments of the present disclosure, in combination with Figure 1, and Figures 19 to 23, the valve body 1 includes a first valve body 11 and a second valve body 12. The first valve body 11 is located between the second valve body 12 and the piston rod 8, and the second valve body 12 is formed with an inlet 121 and an outlet 122. Thus, the fluid can flow from the inlet 121 into the overflow valve seat 2, and then flow through the circulation channel 61 to the outlet 122 before flowing out. The first valve body 11 is a rotating body structure, and is made of magnetic material. After the coil assembly 93 is magnetized, a magnetic force can be generated to cause the magnetic core 91 and the valve body 1 to move and attract each other. A conical boss 111 is provided on the top of the first valve body 11, and the groove structure 941 on the lower side of the magnetic isolation ring 94 cooperates with the conical boss 111 on the top of the first valve body 11, so as to accurately position the magnetic isolation ring 94 radially. The outer wall of the first valve body 11 is provided with an external thread structure 112, which threadably engages with the internal thread structure 81 of the piston rod 8, securing the magnetic isolation ring 94, core cover 92, coil assembly 93, and other components within the piston rod 8. A circular recessed groove 113 is provided in the middle area of ​​the upper side of the first valve body 11. This recessed groove 113 is formed on the conical boss 111. The outer circumference of the lower portion of the magnetic core 91 is loosely fitted with the recessed groove 113 of the first valve body 11, allowing the magnetic core 91 to move axially along the recessed groove 113. A second through-hole 13 is provided in the center of the first valve body 11. A second guide sleeve 131 is positioned within this second through-hole 13, engaging radial movement with the pilot valve plug 10. The outer wall of the second guide sleeve 131 is formed with at least one flow groove 251 (not shown) to facilitate the flow of oil or gas.

[0113] According to some optional embodiments of the present disclosure, in conjunction with Figures 1 and 20, a rib 14 extending toward the relief valve body 6 is provided within the first valve body 11. The relief valve body 6 is disposed within the first valve body 11. The outer peripheral wall of the relief valve body 6 is in sealed engagement with the inner sidewall of the first valve body 11. The inner sidewall of the mating groove 15 of the relief valve body 6, which is distal from the relief valve seat 2, is in sealed engagement with the outer sidewall of the rib 14 within the inner cavity of the first valve body 11. This arrangement prevents oil from easily flowing between the outer peripheral surface of the relief valve body 6 and the inner wall of the first valve body 11. Furthermore, the mating groove 15 and the rib 14 enhance the stability of the assembly of the relief valve body 6 and the first valve body 11, thereby improving the reliability of the movement of the relief valve body 6 and, in turn, the operational reliability of the damping adjustment module 100.

[0114] According to some optional embodiments of the present disclosure, in conjunction with FIG23 , the lower end face of the first valve body 11 and the upper end face of the second valve body 12 are connected and fixed, a plurality of side through holes (not shown) are provided on the side wall of the second valve body 12, and a first external thread 123 is provided on the outer side wall of the second valve body 12, and the first external thread 123 is connected and fixed in cooperation with the first internal thread 2011 of the piston valve 201. A second internal thread 124 is provided on the inner side wall of the second valve body 12, and the internal thread is connected and fixed in cooperation with the second external thread 24 of the relief valve seat 2. This facilitates the assembly of the second valve body 12 and the piston valve 201, and also facilitates the assembly of the second valve body 12 and the relief valve seat 2. The assembly operation is simple, the production and processing are convenient, and the production efficiency of the damping adjustment module 100 is improved.

[0115] According to some optional embodiments of the present disclosure, in conjunction with FIG19 , the relief valve body 6 is a rotating body structure, and is provided with two oil circulation channels 63. One oil circulation channel 63 extends axially along the relief valve body 6 and penetrates the upper and lower surfaces of the relief valve body 6. One end of the other oil circulation channel 63 extends to penetrate the upper surface of the relief valve body 6 and engages with the lower end of the pilot valve plug 10. The other end of the other oil circulation channel 63 extends radially along the relief valve body 6 and penetrates the outer circumferential surface of the relief valve body 6. As a result, oil can flow in the two oil circulation channels 63, thereby facilitating the flow of oil within the damping adjustment module 100.

[0116] According to some embodiments of the present disclosure, in combination with Figure 2, a first pressure-bearing chamber 64 is defined between the overflow valve disc 3 and the overflow valve body 6, and a second pressure-bearing chamber 33 is defined between the overflow valve disc 3 and the overflow valve seat 2. The surface of the overflow valve disc 3 corresponding to the first pressure-bearing chamber 64 is a first pressure-bearing surface 34, and the surface of the overflow valve disc 3 corresponding to the second pressure-bearing chamber 33 is a second pressure-bearing surface 35. The area of ​​the first pressure-bearing surface 34 is smaller than the area of ​​the second pressure-bearing surface 35. The overflow valve body 6 is movable between a first position and a second position. When the overflow valve body 6 is in the first position, the two sides of the overflow valve disc 3 are respectively in contact with the overflow valve body 6 and the overflow valve seat 2. When the overflow valve body 6 is in the second position, the overflow valve disc 3 is separated from at least one of the overflow valve body 6 or the overflow valve seat 2.

[0117] For example, in the example of FIG2 , the relief valve seat 2 is a rotating structure. The space defined between the upper surface of the relief valve disc 3 and the lower portion of the relief valve body 6 is the first pressure-bearing chamber 64, and the space defined between the lower surface of the relief valve disc 3 and the upper portion of the relief valve seat 2 is the second pressure-bearing chamber 33. The aforementioned "pressure-bearing chamber" can be understood as the pressure in the first pressure-bearing chamber 64 or the second pressure-bearing chamber 33 after the fluid flows into the corresponding space, that is, the space that withstands the fluid pressure. When the upper surface of the relief valve disc 3 abuts the relief valve body 6, the surface where the fluid in the first pressure-bearing chamber 64 contacts the upper side of the relief valve disc 3 is the first pressure-bearing surface 34. When the lower surface of the relief valve disc 3 abuts the relief valve seat 2, the surface where the fluid in the second pressure-bearing chamber 33 contacts the lower side of the relief valve disc 3 is the second pressure-bearing surface 35. When the relief valve body 6 is in the first position, fluid flowing in from the inlet 121 cannot flow to the outlet 122, indicating that the damping adjustment module 100 is in a closed state. In this state, when the pressure on the second pressure-bearing surface 35 gradually increases to overcome the force exerted by the relief valve body 6 on the relief valve disc 3, the relief valve disc 3 can move upward to separate the lower surface of the relief valve disc 3 from the relief valve seat 2. Fluid can then flow out from between the relief valve disc 3 and the upper end of the relief valve seat 2 to adjust and control the damping force. In addition, by setting the area of ​​the second pressure-bearing surface 35 to be larger than the area of ​​the first pressure-bearing surface 34, the size of the gap between the relief valve disc 3 and the relief valve seat 2 can be adjusted by the pressure difference between the second pressure-bearing surface 35 and the first pressure-bearing surface 34. It should be noted that the "pressure-bearing surface" refers to the surface of the relief valve disc 3 that is subjected to fluid pressure when in contact with the fluid. The second pressure-bearing chamber 33 includes the space between the fluid groove 25 and the relief valve chamber 22.

[0118] When the relief valve body 6 is in the second position, the relief valve disc 3 can be in the following states: First, the lower surface of the relief valve disc 3 abuts against the upper part of the relief valve seat 2, and the upper surface of the relief valve disc 3 separates from the lower part of the relief valve body 6, allowing fluid to flow out from between the upper surface of the relief valve disc 3 and the relief valve body 6. Second, the lower surface of the relief valve disc 3 separates from the upper part of the relief valve seat 2, and the upper surface of the relief valve disc 3 abuts against the lower part of the relief valve body 6, allowing fluid to flow out from between the lower surface of the relief valve disc 3 and the relief valve seat 2. Third, the lower surface of the relief valve disc 3 separates from the upper part of the relief valve seat 2, and the lower surface of the relief valve disc 3 separates from the upper part of the relief valve seat 2, allowing fluid to flow out from either the upper or lower surface of the relief valve disc 3.

[0119] According to some embodiments of the present disclosure, in conjunction with FIG2 , the projection of the relief valve body 6 onto the relief valve disc 3 along the thickness direction of the relief valve disc 3 serves as the first pressure-bearing surface 34. For example, when the relief valve body 6 abuts the relief valve disc 3, the contact surface formed by the lower end of the relief valve body 6 and the relief valve disc 3 serves as the first pressure-bearing surface 34. This facilitates contact between the fluid and the first pressure-bearing surface 34 and also facilitates the definition of the first pressure-bearing surface 34.

[0120] According to some embodiments of the present disclosure, referring to FIG2 , a fluid groove 25 is formed on the side of the relief valve seat 2 facing the relief valve disc 3. A second pressure-bearing cavity 33 is defined between the fluid groove 25 and the relief valve disc 3. The surface of the relief valve disc 3 corresponding to the fluid groove 25 serves as a second pressure-bearing surface 35. For example, in the example of FIG2 , a fluid groove 25 is formed on the upper end surface of the relief valve seat 2. The cross-sectional area of ​​the fluid groove 25 is larger than the cross-sectional area of ​​the sealing surface formed when the relief valve body 6 and the relief valve disc 3 are in contact. As a result, the second pressure-bearing surface 35 formed when the relief valve disc 3 abuts the relief valve seat 2 is larger than the first pressure-bearing surface 34 formed when the relief valve disc 3 abuts the relief valve body 6. For example, the second pressure-bearing surface 35 is the surface within the fluid groove 25 that contacts the lower surface of the relief valve disc 3, while the first pressure-bearing surface 34 is the surface where the fluid between the relief valve body 6 and the relief valve disc 3 contacts the upper surface of the relief valve disc 3. Thus, the fluid flowing in from the inlet 121 can flow between the relief valve disc 3 and the relief valve body 6, and then flow to the outlet 122 through the circulation channel 61. In addition, when the pressure exerted by the fluid on the lower surface of the relief valve disc 3 (i.e., the aforementioned second pressure-bearing surface 35) is greater than the sum of the force exerted by the relief valve body 6 on the upper surface of the relief valve disc 3 and the pressure exerted by the fluid on the aforementioned first pressure-bearing surface 34 of the relief valve disc 3, the fluid can push the relief valve disc 3 and the relief valve body 6 upward to separate the relief valve disc 3 from the upper end surface of the relief valve seat 2, thereby allowing the fluid in the fluid groove 25 to flow into the recovery chamber 206 through the outlet 122.

[0121] According to some embodiments of the present disclosure, with reference to FIG6 , at least one through-groove 251 is formed on the sidewall of the fluid groove 25. The through-groove 251 connects the fluid groove 25 with the exterior of the relief valve seat 2. A relief valve cavity 22 is formed on the side of the relief valve seat 2 facing away from the relief valve plate 3. At least one first communication hole 252 is formed on the bottom wall of the fluid groove 25. The first communication hole 252 connects the fluid groove 25 with the relief valve cavity 22.

[0122] For example, in the example of FIG6 , the sidewall of the fluid groove 25 is formed with a plurality of through-grooves 251, which are arranged at intervals along the sidewall of the fluid groove 25. The fluid groove 25 communicates with the exterior of the relief valve seat 2 through the through-grooves 251. The bottom wall of the fluid groove 25 is formed with a plurality of first communication holes 252, which are arranged at intervals along the circumference of the relief valve seat 2. The relief valve disc 3 is formed with a plurality of second communication holes 31, which are arranged at intervals along the circumference of the relief valve seat 2. Thus, fluid flowing in from the inlet 121 can flow through the first communication holes 252 and the second communication holes 31 to the space between the relief valve disc 3 and the relief valve body 6, and then flow through the circulation channel 61 to the outlet 122. Furthermore, when the side surfaces of the relief valve disc 3 respectively abut against the relief valve seat 2 and the relief valve body 6, the fluid in the restoration chamber 206 can flow through the through groove 251 to the fluid groove 25 and then into the relief valve chamber 22, thereby facilitating the adjustment of the damping force. It should be noted that the cross-sectional shapes of the through groove 251, the first communicating hole 252, and the second communicating hole 31 can be specifically configured based on actual use to better meet practical requirements.

[0123] Referring to FIG1 , a shock absorber 200 according to an embodiment of the second aspect of the present disclosure includes a damping adjustment module 100 according to the embodiment of the first aspect.

[0124] According to the shock absorber 200 of the second embodiment of the present disclosure, by adopting the aforementioned damping adjustment module 100, the damping adjustment module 100 can be adapted to different operating states of the shock absorber 200, facilitating the control and adjustment of the damping force, thereby improving the performance of the shock absorber 200. Furthermore, the structure of the shock absorber 200 is simplified, making it easier to adjust, facilitating the production, processing, and use of the shock absorber 200, and enabling a vehicle to achieve better vibration damping effects under different road conditions.

[0125] According to some optional embodiments of the present disclosure, in conjunction with FIG1 , the shock absorber 200 includes an outer shell 202 and an inner shell 203, wherein the inner shell 203 is nested in the outer shell 202, and the outer shell 202 and the inner shell 203 jointly define a liquid storage chamber 2031 for storing liquid, wherein the liquid storage chamber 2031 stores fluids at a certain pressure, such as oil and inert gas. The shock absorber 200 also includes a bottom valve 204, which is disposed at the bottom of the inner shell 203. The interior of the inner shell 203 is provided with a piston valve 201 and the damping adjustment module 100 of the above-mentioned first embodiment. The cavity between the bottom valve 204 and the piston valve 201 is a compression chamber 205, and the cavity of the piston valve 201 away from the compression chamber 205 is a recovery chamber 206. The damping adjustment module 100 of the above-mentioned first embodiment is disposed in the recovery chamber 206. Thus, the space inside the inner shell 203 is reasonably utilized, which is beneficial for the oil to flow in the liquid storage chamber 2031, the compression chamber 205 and the recovery chamber 206 when the shock absorber 200 is working.

[0126] According to some optional embodiments of the present disclosure, referring to FIG1 , a compression chamber 205 and a restoring chamber 206 are defined in the shock absorber 200. The compression chamber 205 and the restoring chamber 206 are connected through the outlet 122 on the valve body 1 of the damping adjustment module 100. The compression chamber 205 is connected to the overflow valve chamber 22 of the damping adjustment module 100. The overflow valve body 6 of the damping adjustment module 100 is used to adjust the flow damping between the compression chamber 205 and the outlet 122.

[0127] For example, in the example of FIG1 , the compression chamber 205 is located below the damping adjustment module 100, and the inner shell 203 and the outer peripheral surface of the valve body 1 define the aforementioned restoring chamber 206. The restoring chamber 206 communicates with the interior of the valve body 1 via the outlet 122. When the relief valve body 6 moves within the valve body 1, the damping force of the fluid between the inlet 121 and the outlet 122 can be adjusted by regulating the flow of fluid between the relief valve disc 3, the relief valve seat 2, and the relief valve body 6, thereby further facilitating the use of the shock absorber 200.

[0128] The flow paths of the fluid in different states of the shock absorber 200 in this application are roughly as follows:

[0129] When a vehicle equipped with the shock absorber 200 of this embodiment is traveling on a relatively flat road surface and the coil is de-energized, the relief valve body 6 and the relief valve plate 3, under the combined action of the first elastic member 5 and the second elastic member 7, maintain a normally open state in the flow channel 61, equivalent to the damping adjustment module 100 being a normally open valve. When the piston rod 8 is pushed upward, the pressure in the recovery chamber 206 increases, and the oil flows from the recovery chamber 206 through the flow channel 61 (between the relief valve body 6 and the relief valve plate 3), the second connecting hole 31, and the first connecting hole 252 into the compression chamber 205. Simultaneously, the oil in the liquid storage chamber 2031 also flows into the compression chamber 205 through the bottom valve 204. In this state, the oil flow rate is high, the fluid damping is low, and the shock absorber 200 behaves in a "soft" state (the oil flow path is indicated by the arrow B in Figure 1).

[0130] When piston rod 8 is pushed downward, the pressure in restoring chamber 206 decreases, while the pressure in compression chamber 205 increases. Oil from compression chamber 205 pushes relief valve disc 3 against the bottom end face of relief valve body 6. At this point, oil flows from the high-flow channel between relief valve disc 3 and relief valve seat 2 into restoring chamber 206. Simultaneously, oil in compression chamber 205 flows into reservoir 2031 through bottom valve 204. The gas in reservoir 2031 is compressed, buffering energy and reducing vibration. In this state, the oil flow rate is high and the fluid damping is low (the flow path of the oil is indicated by arrow C in Figure 24). As piston rod 8 reciprocates upward and downward, oil flows back and forth in reservoir 2031, compression chamber 205, and restoring chamber 206 at a high flow rate, resulting in low fluid damping and improved ride comfort.

[0131] When a vehicle equipped with the shock absorber 200 of this embodiment travels on a road with potholes and uneven surfaces, the coil is energized, and the magnetic core 91 is pushed downward by the magnetic force. The pilot valve plug 10 pushes the relief valve body 6, and the bottom end surface of the relief valve body 6 abuts the relief valve disc 3, which then abuts the relief valve seat 2. This closes (or partially closes) the flow channel 61 between the relief valve disc 3 and the relief valve body 6, as well as the aforementioned high-flow channel between the relief valve seat 2 and the relief valve disc 3. When the piston rod 8 vibrates upward, the pressure in the recovery chamber 206 increases, and oil flows from the recovery chamber 206 and the liquid storage chamber 2031 into the compression chamber 205. Specifically: In the Q1 stage, the relief valve body 6 abuts against the relief valve disc 3, and the relief valve disc 3 abuts against the top surface of the relief valve seat 2 to seal the flow channel 61. The oil first flows out from the through groove 251 of the relief valve seat 2, with a small flow rate and large damping, which appears to be "hard"; in the Q2 stage, the oil flows through the oil flow channel 63 on the relief valve body 6 to the lower end surface of the pilot valve plug 10 and various holes of the relief valve body 6. The oil between the first valve body 11 and the relief valve body 6 increases. When the oil pressure increases, the oil is overcome. After the electromagnetic force pushes open the pilot valve plug 10, the oil flows out into the overflow valve seat 2 (that is, into the overflow valve chamber 22), and the damping is reduced; in the Q3 stage, a large amount of oil is accumulated at the lower end of the overflow valve plate 3, and the oil pressure in the overflow valve seat 2 (that is, in the overflow valve chamber 22) increases. When the pressure is greater than the electromagnetic force, the oil pushes open the overflow valve plate 3 and the overflow valve body 6, and the oil flows out from between the overflow valve seat 2 and the overflow valve plate 3, and the damping is further reduced (the flow path of the above oil is the direction indicated by the arrow D in Figure 25).

[0132] When the piston rod 8 vibrates downward, the pressure in the compression chamber 205 increases, and oil flows from the compression chamber 205 into the recovery chamber 206 and the oil storage chamber. In the Q1 stage, the relief valve body 6 abuts the relief valve disc 3, which in turn abuts the top surface of the relief valve seat 2. The oil first flows out from the through groove 251 of the relief valve seat 2, with a small flow rate and large damping, appearing "hard." In the Q2 stage, a large amount of oil accumulates in the relief valve seat 2, and the oil pressure increases. When the pressure exceeds the electromagnetic force, the relief valve disc 3 and the relief valve body 6 are pushed open, and the oil flows out from between the relief valve seat 2 and the relief valve disc 3, reducing the damping (the flow path of the above oil is indicated by the arrow C in Figure 24). In this way, when the piston rod 8 reciprocates upward and downward, the oil flows back and forth in the liquid storage chamber 2031, the compression chamber 205, and the recovery chamber 206, and the flow rate and fluid damping vary, resulting in better ride comfort.

[0133] A suspension system 400 according to an embodiment of the third aspect of the present disclosure, as shown in FIG26 , includes the shock absorber 200 according to the embodiment of the second aspect.

[0134] According to the suspension system 400 of the third embodiment of the present disclosure, by adopting the above-mentioned shock absorber 200, the vibration reduction performance is good, thereby improving the performance of the suspension system 400.

[0135] The vehicle 500 according to the fourth aspect embodiment of the present disclosure includes a damping adjustment module 100 according to the above-mentioned first aspect embodiment (as shown in Figure 27), or a shock absorber 200 according to the above-mentioned second aspect embodiment (as shown in Figure 28), or a suspension system 400 according to the above-mentioned third aspect embodiment (as shown in Figure 29).

[0136] According to the vehicle 500 of the fourth embodiment of the present disclosure, the driving comfort of the vehicle 500 can be improved by adopting the above-mentioned damping adjustment module 100, or shock absorber 200, or suspension system 400.

[0137] Other configurations and operations of the damping adjustment module 100 , the shock absorber 200 , the suspension system 400 , and the vehicle 500 according to the embodiment of the present disclosure are well known to those skilled in the art and will not be described in detail herein.

[0138] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "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 disclosure 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 to the present disclosure.

[0139] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0140] Although the embodiments of the present disclosure have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A damping adjustment module (100), characterized in that, Comprising: Valve body (1); Overflow valve seat (2), the overflow valve seat (2) is arranged in the valve body (1), and the overflow valve seat (2) and the valve body (1) jointly define a valve cavity (21); Overflow valve body (6), the overflow valve body (6) is movably arranged in the valve cavity (21); Overflow valve plate (3), the overflow valve plate (3) is movably arranged between the overflow valve body (6) and the overflow valve seat (2); Guide rod (4), the guide rod (4) movably penetrates through the overflow valve seat (2) and the overflow valve plate (3), the guide rod (4) has a first abutting portion (41) and a second abutting portion (42), the first abutting portion (41) is located on the side of the overflow valve seat (2) away from the overflow valve plate (3), and the second abutting portion (42) is located on the side of the overflow valve plate (3) away from the overflow valve seat (2); and First elastic member (5), the first elastic member (5) abuts between the first abutting portion (41) and the overflow valve seat (2) to make the second abutting portion (42) press the overflow valve plate (3) against the overflow valve seat (2).

2. The damping adjustment module (100) according to claim 1, characterized in that An overflow valve cavity (22) is formed on the side of the overflow valve seat (2) facing away from the overflow valve plate (3), the first abutting portion (41) is located in the overflow valve cavity (22), the first elastic member (5) abuts between the first abutting portion (41) and the inner wall of the overflow valve cavity (22), and the second abutting portion (42) is located outside the overflow valve cavity (22).

3. The damping adjustment module (100) according to claim 2, characterized in that, The guide rod (4) includes: Guide rod body (43), the second abutting portion (42) is arranged at one end of the guide rod body (43) adjacent to the overflow valve plate (3); and Limiting member (44), the limiting member (44) is located in the overflow valve cavity (22), the other end of the guide rod body (43) penetrates through the overflow valve plate (3) and the overflow valve seat (2) and is connected to the limiting member (44), and the limiting member (44) constitutes the first abutting portion (41).

4. The damping adjustment module (100) according to claim 3, characterized in that, A through hole (23) for passing through the guide rod body (43) is formed on the overflow valve seat (2), and the guide rod body (43) is in sliding and sealing fit with the through hole (23).

5. The damping adjustment module (100) according to claim 3 or 4, characterized in that, The limiting member (44) is a limiting nut, and the limiting member (44) is threadedly connected to the other end of the guide rod body (43).

6. The damping adjustment module (100) according to any one of claims 3-5, characterized in that, The second abutting portion (42) and the guide rod body (43) are integrally formed.

7. The damping adjustment module (100) according to any one of claims 1-6, characterized in that, The first elastic member (5) is a spring (912), and the first elastic member (5) is sleeved outside the guide rod (4).

8. The damping adjustment module (100) according to any one of claims 1-7, characterized in that, A first pressure-bearing cavity (64) is defined between the overflow valve plate (3) and the overflow valve body (6), a second pressure-bearing cavity (33) is defined between the overflow valve plate (3) and the overflow valve seat (2), a surface of the overflow valve plate (3) corresponding to the first pressure-bearing cavity (64) is a first pressure-bearing surface (34), a surface of the overflow valve plate (3) corresponding to the second pressure-bearing cavity (33) is a second pressure-bearing surface (35), and an area of ​​the first pressure-bearing surface (34) is smaller than an area of ​​the second pressure-bearing surface (35); The overflow valve body (6) is movable between a first position and a second position. When the overflow valve body (6) is located at the first position, two sides of the overflow valve plate (3) are respectively in contact with the overflow valve body (6) and the overflow valve seat (2). When the overflow valve body (6) is located at the second position, the overflow valve plate (3) is separated from at least one of the overflow valve body (6) and the overflow valve seat (2).

9. The damping adjustment module (100) according to claim 8, characterized in that, The projection surface of the overflow valve body (6) on the overflow valve plate (3) along the thickness direction of the overflow valve plate (3) is the first pressure-bearing surface (34).

10. The damping adjustment module (100) according to claim 8 or 9, characterized in that, A fluid groove (25) is formed on the side of the overflow valve seat (2) facing the overflow valve plate (3), and the second pressure-bearing cavity (33) is defined between the fluid groove (25) and the overflow valve plate (3), and the surface of the overflow valve plate (3) corresponding to the fluid groove (25) is the second pressure-bearing surface (35).

11. The damping adjustment module (100) according to claim 10, characterized in that, At least one through groove (251) is formed on the side wall of the fluid groove (25), and the through groove (251) communicates with the fluid groove (25) and the outside of the overflow valve seat (2).

12. The damping adjustment module (100) according to claim 10 or 11, characterized in that, A relief valve cavity (22) is formed on the side of the relief valve seat (2) facing away from the relief valve plate (3), and at least one first connecting hole (252) is formed on the bottom wall of the fluid groove (25), wherein the first connecting hole (252) connects the fluid groove (25) and the relief valve cavity (22).

13. The damping adjustment module (100) according to any one of claims 1-12, characterized in that, Further including: A second elastic member (7), wherein the second elastic member (7) abuts between the second abutting portion (42) and the overflow valve body (6), and the second elastic member (7) normally pushes the overflow valve body (6) in a direction away from the overflow valve seat (2).

14. The damping adjustment module (100) according to claim 13, characterized in that, When the overflow valve body (6) is only acted upon by the elastic force of the second elastic member (7), the overflow valve body (6) and the overflow valve seat (2) are spaced apart from each other to form a flow channel (61).

15. The damping adjustment module (100) according to claim 13 or 14, characterized in that, The second elastic member (7) is a spring (912), and the second elastic member (7) is sleeved outside the guide rod (4).

16. A shock absorber (200), characterized in that, It comprises a damping adjustment module (100) according to any one of claims 1 to 15.

17. The shock absorber (200) according to claim 16, characterized in that, A compression chamber (205) and a rebound chamber (206) are defined within the shock absorber (200). The compression chamber (205) and the rebound chamber (206) communicate through an outlet (122) on a valve body (1) of the damping adjustment module (100). The compression chamber (205) communicates with an overflow valve chamber (22) of the damping adjustment module (100). An overflow valve body (6) of the damping adjustment module (100) is used to adjust the flow damping between the compression chamber (205) and the outlet (122).

18. A suspension system (400), characterized in that, Comprising a shock absorber (200) according to claim 16 or 17.

19. A vehicle (500), characterized in that, Comprising a damping adjustment module (100) according to any one of claims 1-10, or a shock absorber (200) according to claim 11, or a suspension system (400) according to claim 12.

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