Damping adjusting module, shock absorber, suspension system and vehicle

Abstract

The utility model discloses a damping adjusting module, a shock absorber, a suspension system and a vehicle. The damping adjusting module comprises a valve body, a valve element and a spring, the overflow valve seat is arranged in the valve body, and the overflow valve seat and the valve body jointly define a valve cavity; the overflow valve body is movably arranged in the valve cavity; the overflow valve plate is movably arranged between the overflow valve body and the overflow valve seat; the guide rod movably penetrates through the overflow valve seat and the overflow valve plate, the guide rod is provided with a first abutting part and a second abutting part, the first abutting part is located on the side, away from the overflow valve plate, of the overflow valve seat, and the second abutting part is located on the side, away from the overflow valve seat, of the overflow valve plate; the first elastic piece abuts against the position between the first abutting part and the overflow valve seat so that the second abutting part can tightly press the overflow valve plate on the overflow valve seat. According to the damping adjusting module, the structure of the damping adjusting module is simplified, the production difficulty is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a damping adjustment module, a shock absorber, a suspension system and a vehicle. Background Art

[0002] Shock absorbers are installed in the wheel area of ​​the car to reduce the bumps of the car during driving. When the 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, and converts the vibration energy into heat energy of the oil and gas and dissipates it into the atmosphere, so that the shock absorber can work 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. Moreover, the structure of the solenoid valve is complex and the production is difficult, which reduces the production efficiency of the solenoid valve. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a damping adjustment module, in which the overflow valve plate can be stably stopped on the overflow valve seat, and the structure of the damping adjustment module is simplified, the production difficulty is reduced, and the production efficiency is improved.

[0004] The second objective of the utility model is to provide a shock absorber using the damping adjustment module.

[0005] The third object of the present utility model is to provide a suspension system using the above shock absorber.

[0006] A fourth objective of the present invention is to provide a vehicle using the above suspension system.

[0007] According to the damping adjustment module of the first aspect embodiment of the utility model, it includes: a valve body; an overflow valve seat, the overflow valve seat is arranged in the valve body, and the overflow valve seat and the valve body jointly define a valve cavity; a overflow valve body, the overflow valve body is movably arranged in the valve cavity; an overflow valve plate, the overflow valve plate is movably arranged between the overflow valve body and the overflow valve seat; a guide rod, the guide rod is movably passed through the overflow valve seat and the overflow valve plate, the guide rod has a first abutment portion and a second abutment portion, the first abutment portion is located on the side of the overflow valve seat away from the overflow valve plate, and the second abutment portion is located on the side of the overflow valve plate away from the overflow valve seat; a first elastic member, the first elastic member 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.

[0008] According to the damping adjustment module of the embodiment of the utility model, through the joint action of the first elastic member and the guide rod, the first elastic member acts on the first abutment portion so that the second abutment portion can act downward on the overflow valve plate to push the overflow valve plate and the overflow valve seat to stop each other, so as to seal the gap between the overflow valve plate and the upper end surface of the overflow valve seat, so that the fluid in the overflow valve seat, such as oil, is not easy to flow out from the gap between the overflow valve plate and the overflow valve seat, so as to facilitate the normal use of the damping adjustment module. In addition, the guide rod and the first elastic member have a simple structure, so that the structure of the damping adjustment module can be simplified, the production difficulty of the damping adjustment module is reduced, and the production efficiency of the damping adjustment module is improved.

[0009] According to some embodiments of the utility model, 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.

[0010] According to some embodiments of the utility model, the guide rod includes: a guide rod body, the second abutment portion is arranged at one end of the guide rod body adjacent to the overflow valve plate; a limit member, the limit 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 limit member, and the limit member constitutes the first abutment portion.

[0011] According to some embodiments of the utility model, 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 slidably sealed.

[0012] According to some embodiments of the present utility model, the limiting member is a limiting nut, and the limiting member is threadedly connected to the other end of the guide rod body.

[0013] According to some embodiments of the present invention, the second abutting portion and the guide rod body are integrally formed.

[0014] According to some embodiments of the present invention, the first elastic member is a spring, and the first elastic member is sleeved outside the guide rod.

[0015] According to some embodiments of the utility model, a first pressure-bearing cavity is defined between the overflow valve plate and the overflow valve body, a second pressure-bearing cavity is defined between the overflow valve plate and the overflow valve seat, the surface of the overflow valve plate corresponding to the first pressure-bearing cavity is a first pressure-bearing surface, the surface of the overflow valve plate corresponding to the second pressure-bearing cavity is a second pressure-bearing surface, and 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 plate are respectively in contact with the overflow valve body and the overflow valve seat, and when the overflow valve body is located at the second position, the overflow valve plate is separated from at least one of the overflow valve body or the overflow valve seat.

[0016] According to some embodiments of the present utility model, 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.

[0017] According to some embodiments of the utility model, a fluid groove is formed on the side of the overflow valve seat facing the overflow valve plate, 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.

[0018] According to some embodiments of the present invention, at least one through groove is formed on the side wall of the fluid groove, and the through groove communicates with the fluid groove and the outside of the overflow valve seat.

[0019] According to some embodiments of the utility model, 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.

[0020] According to some embodiments of the present invention, 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.

[0021] According to some embodiments of the present invention, when the overflow valve body is only acted upon by the elastic force of the second elastic member, the overflow valve body and the overflow valve seat are spaced apart from each other to form a flow channel.

[0022] According to some embodiments of the present invention, the second elastic member is a spring, and the second elastic member is sleeved outside the guide rod.

[0023] The shock absorber according to the second aspect of the present invention comprises the damping adjustment module according to the first aspect of the present invention.

[0024] According to some embodiments of the utility model, 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.

[0025] The suspension system according to the third aspect of the present invention comprises the shock absorber according to the second aspect.

[0026] The vehicle according to the fourth aspect of the utility model comprises the damping adjustment module according to the first aspect, or the shock absorber according to the second aspect, or the suspension system according to the third aspect.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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:

[0029] Figure 1 is a schematic diagram of a shock absorber according to the utility model;

[0030] Figure 2 yes Figure 1 The enlarged view of the part A shown in the middle circle;

[0031] Figure 3 is a schematic diagram of a guide rod of a damping adjustment module according to the utility model;

[0032] Figure 4 is a schematic diagram of a limiter of a damping adjustment module according to the utility model;

[0033] Figure 5 is a schematic diagram of a relief valve plate of a damping adjustment module according to the utility model;

[0034] Figure 6 is a schematic diagram of a relief valve seat of a damping adjustment module according to the utility model;

[0035] Figure 7 It is an assembly diagram of the overflow valve seat, the overflow valve plate and the guide rod of the damping adjustment module according to the utility model;

[0036] Figure 8 It is an assembly side view of the overflow valve seat, overflow valve plate and guide rod of the damping adjustment module according to the utility model, wherein the overflow valve plate and the overflow valve seat abut against each other;

[0037] Fig. 9 It 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 utility model, wherein the overflow valve plate and the overflow valve seat abut against each other;

[0038] Fig.10 It is an assembly side view of the overflow valve seat, the overflow valve plate and the guide rod of the damping adjustment module according to the utility model, wherein the overflow valve plate and the overflow valve seat are spaced apart;

[0039] Fig.11 It is an assembly cross-sectional view of the overflow valve seat, the overflow valve plate and the guide rod of the damping adjustment module according to the utility model, wherein the overflow valve plate and the overflow valve seat are spaced apart;

[0040] Fig.12 is a schematic diagram of an iron core cover of a damping adjustment module according to the utility model;

[0041] Fig.13 It is a cross-sectional view of the core cover of the damping adjustment module according to the utility model;

[0042] Fig.14 It is a schematic diagram of the assembly of the iron core cover and the pilot valve plug of the damping adjustment module according to the utility model;

[0043] Fig.15 It is an assembly cross-sectional view of the iron core cover and the pilot valve plug of the damping adjustment module according to the utility model;

[0044] Fig.16 is a schematic diagram of a relief valve body of a damping adjustment module according to the utility model;

[0045] Fig.17 It is a cross-sectional view of a relief valve body of a damping adjustment module according to the utility model;

[0046] Fig.18 is a cross-sectional view of another angle of the overflow valve body of the damping adjustment module according to the utility model;

[0047] Fig.19 is a schematic diagram of a first valve body of a damping adjustment module according to the utility model;

[0048] Fig. 20 is a cross-sectional view of a first valve body of a damping adjustment module according to the utility model;

[0049] Fig.21 is a schematic diagram of a second valve body of a damping adjustment module according to the utility model;

[0050] Fig. 22 is a schematic diagram of a valve body of a damping adjustment module according to the utility model;

[0051] Fig.23 is a cross-sectional view of a valve body of a damping adjustment module according to the utility model;

[0052] Fig.24 A schematic diagram of a shock absorber according to the utility model, wherein the shock absorber is in a state where the piston rod vibrates downward;

[0053] Fig.25 According to the schematic diagram of the shock absorber of the utility model, the shock absorber is in a state where the piston rod vibrates upward.

[0054] Reference numerals:

[0055] 100. Damping adjustment module;

[0056] 1. valve body; 11. first valve body; 111. conical boss;

[0057] 112. External thread structure; 113. Sink;

[0058] 12. second valve body; 121. inlet; 122. outlet;

[0059] 123, first external thread; 124, second internal thread;

[0060] 13. second through hole; 131. second guide sleeve; 14. convex rib; 15. matching groove;

[0061] 2. Overflow valve seat; 21. Valve cavity; 22. Overflow valve cavity; 23. Perforation;

[0062] 24, second external thread; 25, fluid groove; 251, through groove; 252, first communicating hole;

[0063] 3. Overflow valve plate; 31. Second connecting hole; 32. Valve plate through hole;

[0064] 33. Second pressure-bearing cavity; 34. First pressure-bearing surface; 35. Second pressure-bearing surface;

[0065] 4. guide rod; 41. first abutting portion; 42. second abutting portion;

[0066] 43. guide rod body; 44. limiter; 5. first elastic member;

[0067] 6. overflow valve body; 61. flow channel; 62. valve port;

[0068] 63. Oil flow channel; 64. First pressure-bearing chamber;

[0069] 7. second elastic member; 8. piston rod; 81. internal thread structure;

[0070] 9. driving assembly; 91. magnetic core; 911. mounting slot; 912. spring;

[0071] 913, side slot ventilation channel; 914, ventilation side hole;

[0072] 92. core cover; 921. first boss; 922. groove;

[0073] 923, second boss; 924, first guide sleeve;

[0074] 93. Coil assembly; 931. Coil support;

[0075] 9311, line trough; 9312, center column; 932, coil cap;

[0076] 94. Magnetic isolation ring; 941. Sink structure; 942. Sealing ring assembly groove;

[0077] 943, sealing ring; 944, first through hole;

[0078] 10. Pilot valve plug;

[0079] 200, shock absorber; 201, piston valve; 2011, first internal thread;

[0080] 202, outer shell; 203, inner shell; 2031, liquid storage chamber;

[0081] 204, bottom valve; 205, compression chamber; 206, recovery chamber. DETAILED DESCRIPTION

[0082] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figure 1-Figure 23 The damping adjustment module 100 according to the first embodiment of the present invention is described. In the following description of the present application, the damping adjustment module 100 is used in a shock absorber 200 as an example for illustration.

[0083] like Figure 1 and Figure 2 As shown, the damping adjustment module 100 according to the embodiment of the first aspect of the utility model 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.

[0084] Specifically, the overflow valve seat 2 is disposed in the valve body 1, the overflow valve seat 2 and the valve body 1 together define a valve cavity 21, the overflow valve body 6 is movably disposed in the valve cavity 21, and the overflow valve plate 3 is movably disposed between the overflow valve body 6 and the overflow valve seat 2. Figure 1 and Figure 2In the example, the valve body 1 is arranged in the up-down direction, the overflow valve seat 2 is located in the lower part of the valve body 1, the overflow valve body 6 is located above the overflow valve seat 2, and the overflow valve disc 3 is movable in the up-down direction between the overflow valve body 6 and the overflow valve seat 2. Therefore, the valve cavity 21 can be used to place the overflow valve disc 3, the overflow valve body 6 and other components, so as to effectively utilize the space inside the valve body 1.

[0085] The guide rod 4 can movably penetrate the overflow valve seat 2 and the overflow valve plate 3, and 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 plate 3, and the second abutment portion 42 is located on the side of the overflow valve plate 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 plate 3 onto the overflow valve seat 2.

[0086] For example, in Figure 1-Figure 3 In the example, the guide rod 4 extends in the up-down direction, 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 have a tendency to move downward, 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, so as to seal 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, so as to facilitate 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, so that the structure of the damping adjustment module 100 can be simplified, the production difficulty of the damping adjustment module 100 is reduced, and the production efficiency of the damping adjustment module 100 is improved.

[0087] According to the damping adjustment module 100 of the embodiment of the utility model, through the joint action of the first elastic member 5 and the guide rod 4, the first elastic member 5 acts on the first abutment portion 41 so that the second abutment 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, so as to seal the gap between the overflow valve plate 3 and the upper end surface of the overflow valve seat 2, so that the fluid in the overflow valve seat 2, such as oil, is not easy to flow out from the gap between the overflow valve plate 3 and the overflow valve seat 2, so as to facilitate 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, so that the structure of the damping adjustment module 100 can be simplified, the production difficulty of the damping adjustment module 100 is reduced, and the production efficiency of the damping adjustment module 100 is improved.

[0088] According to some embodiments of the present invention, Figure 1 and Figure 2 The overflow valve seat 2 is formed with an overflow valve cavity 22 on one side 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. For example, Figure 1-Figure 3 In the example, the lower end of the guide rod 4 extends into the overflow valve chamber 22, the first elastic member 5 abuts between the upper inner wall surface of the overflow valve chamber 22 and the upper surface of the first abutment portion 41, and the second abutment portion 42 is located above the overflow valve chamber 22. With such a configuration, the space inside the overflow valve seat 2 can be effectively utilized, so that the layout of the overflow valve plate 3 and the guide rod 4 is reasonable, the space in the upper and lower directions of the damping adjustment module 100 can be saved, and the damping adjustment module 100 can be made more delicate. 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.

[0089] According to some embodiments of the present invention, referring to Figure 1-Figure 3 The guide rod 4 includes a guide rod body 43 and a stopper 44. The second abutment portion 42 is provided at one end of the guide rod body 43 adjacent to the overflow valve plate 3, the stopper 44 is located in the overflow valve cavity 22, the other 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 stopper 44, and the stopper 44 constitutes the first abutment portion 41.

[0090] For example, in Figure 1-Figure 3 In the example, 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 may 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 guide rod body 43 has a simple structure and is easy to produce and process, 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 is conducive to the processing of the guide rod body 43 and the limiter 44, improving the processing accuracy, thereby improving 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 .

[0091] According to some embodiments of the present invention, Figure 1 and Figure 6 The overflow valve seat 2 is formed with a through hole 23 for passing the guide rod body 43, and the guide rod body 43 and the through hole 23 are slidably sealed. Figure 1 and Figure 6 In the example, the through hole 23 penetrates the inner surface and the outer surface of the upper side wall of the overflow valve seat 2 in the up-down direction. In this way, the through hole 23 has positioning and limiting functions for 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 use stability of the guide rod body 43. In addition, by setting the outer peripheral surface of the guide rod body 43 and the inner wall surface of the through hole 23 to slide and seal, it is conducive to the guide rod body 43 moving up and down along the through hole 23, and 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 through hole 23, thereby improving the assembly sealing of the guide rod body 43 with the overflow valve plate 3 and the overflow valve seat 2.

[0092] Optionally, refer to Figure 1-Figure 4 The limiting member 44 can be set as a limiting nut, and the limiting member 44 is threadedly connected to the other end of the guide rod body 43. Figure 1-Figure 4 In the example, the limit nut is threadedly connected to the lower end of the guide rod body 43, and the outer peripheral area of ​​the limit nut is larger than the cross-sectional area of ​​the through hole 23, so that the limit nut is kept in the overflow valve seat when the first elastic member 5 is compressed. In this way, the assembly operation of the limit member 44 and the guide rod body 43 is simple, the assembly efficiency is high, and it is also convenient to disassemble the limit member 44 and the guide rod body 43. In addition, the use cost of the limit nut is low, thereby reducing the production cost of the damping adjustment module 100. But it is not limited to this.

[0093] According to some embodiments of the present invention, Figure 1 and Figure 2 The second abutting portion 42 and the guide rod body 43 are integrally formed. Figure 1 , Figure 2 and Figure 5In the example, the cross-sectional area of ​​the outer peripheral surface of the second abutting portion 42 is larger than the cross-sectional area of ​​the outer peripheral surface of the guide rod body 43, the guide rod body 43 is penetrated by the overflow valve plate 3, the overflow valve plate 3 is formed with a valve plate through hole 32, the cross-sectional area of ​​the outer peripheral 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 along the circumferential direction of the guide rod body 43, and the cross-sectional shape of the guide rod body 43 and the second abutting portion 42 after being integrally formed is a "cross" shape. Such a configuration improves the connection stability of the guide rod body 43 and the second abutting portion 42, thereby being more conducive to the use of the guide rod body 43 and also improving the use stability of the guide rod 4. In addition, it is conducive to the production, processing and use of the guide rod 4. In addition, the second abutting 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 abutting portion 42, so that the second abutting portion can be kept above the overflow valve plate 3, thereby improving the use reliability of the second abutting portion 42.

[0094] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 , the first elastic member 5 can be set as a spring, and the first elastic member 5 is sleeved outside the guide rod 4. For example, Figure 1 and Figure 2 In the example, 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. In this way, the guide rod 4 has a guiding effect on the first elastic member 5, which is conducive 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.

[0095] According to some embodiments of the present invention, Figure 1 and Fig.16 The damping adjustment module 100 further includes a second elastic member 7, the second elastic member 7 abuts between the second abutting portion 42 and the overflow valve body 6, and the second elastic member 7 always pushes the overflow valve body 6 in a direction away from the overflow valve seat 2. Figure 1 In the example, the overflow valve body 6 can move in the valve chamber 21 in the up and down directions, the overflow valve body 6 is located above the overflow valve plate 3, and the second elastic member 7 stops between the overflow valve plate 3 and the inner wall surface of the overflow valve body 6.

[0096] With such a configuration, 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 to move upward, so that the lower end surface of the relief valve body 6 is spaced apart from the relief valve plate 3, and at the same time, the second elastic member 7 can act on the relief valve plate 3 through the second abutting portion 42, and the second abutting portion 42 acts on the relief valve plate 3 to stop the relief valve plate 3 and the relief valve seat 2. With such a configuration, the relief valve body 6 is often pushed in a direction away from the relief valve seat 2 by the second elastic member 7 acting on the relief valve body 6 (that is, the damping adjustment module 100 is a normally open valve), so that the fluid inside the damping adjustment module 100 can flow out from between the relief valve body 6 and the relief valve plate 3 to adjust and control the damping force, thereby facilitating the normal use of the damping adjustment module 100.

[0097] According to some embodiments of the present invention, Figure 1 , 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 plate 3, or the space between the overflow valve plate 3 and the upper side of the overflow valve seat 2. For example, when the overflow valve plate 3 abuts against 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 plate 3. When the lower surface of the overflow valve plate 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 plate 3 and the upper side of the overflow valve seat 2. Thus, the overflow valve body 6 and the overflow valve plate 3 can be kept spaced apart only by the second elastic member 7, that is, the circulation channel 61 is kept open, which is conducive to the fluid flowing smoothly through the fluid channel and out of the overflow valve body 6. In addition, the second elastic member 7 is easy to use and has a low cost, which is conducive to the normal use of the damping adjustment module 100.

[0098] According to some embodiments of the present invention, the second elastic member 7 is a spring, and the second elastic member 7 is at least partially sleeved outside the guide rod 4. Figure 1 In the example, 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. In this way, the guide rod 4 has a guiding effect on the second elastic member 7, which is conducive 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 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.

[0099] According to some optional embodiments of the present invention, combined with Figure 1The 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 its lower inner wall is provided with an internal thread structure 81 to be threadedly connected with the valve body 1. The damping adjustment module 100 further includes a driving component 9, which is arranged in the piston rod 8. The driving component 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 surface of the overflow valve body 6 abuts against the overflow valve plate 3. The driving component 9 includes a magnetic core 91, a core cover 92, a coil component 93, a magnetic isolation ring 94, and a sealing ring 943. The coil component 93 includes a coil bracket 931 and a coil 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 respectively 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). Then the center hole of the coil cap 932 is put on the center column 9312 of the coil bracket 931, so as to fix the copper wire in the line groove 9311.

[0100] For example, in Figure 1 In the example, the bottom surface of the coil cap 932 abuts against 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 and the core cover 92 and the magnetic valve body 1, forming a strong magnetic force. The magnetic core 91 is driven to attract the valve body 1. The core cover 92 is a rotating body structure, and 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, and a second boss 923 is also radially provided on the outer side of the core cover 92. A rotating body structure. One of the two grooves 922 away from the inlet 121 is provided with a first guide sleeve 924 having an outer wall formed with at least a first fluid groove (not shown) as a channel for the flow of oil or gas up and down.

[0101] For example, in Figure 1In the example, the upper end of the pilot valve plug 10 is movably matched with the first guide sleeve 924, and the other end of the pilot valve plug 10 is movably matched with the overflow valve body 6 after passing through the magnetic core 91 and the valve body 1. The magnetic core 91 is arranged in the core cover 92, and the outer circumference of the magnetic core 91 is gap-matched with the inner circumference of the core cover 92. The magnetic core 91 can move 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 respectively provided with mounting grooves 911 on the upper and lower sides, and springs 912 are provided in the mounting grooves 911. The springs 912 on the upper and lower sides can make the magnetic core 91 statically suspend up and down. The side wall of the magnetic core 91 is axially provided with a plurality of side groove ventilation channels 913, and the side wall of the magnetic core 91 is radially provided with a plurality of 91, and the axial side groove ventilation channels 913 of the side wall of the magnetic core 91 are connected with the ventilation side holes 914 of the radial side wall of the magnetic core 91. The pilot valve plug 10 is a rotating body structure with an inclined surface or an arc surface at the bottom, and is used to seal the valve port 62 of the overflow valve body 6. In the description of the present utility model, the meaning of "multiple" is two or more.

[0102] According to some optional embodiments of the present invention, combined with Figure 1 The magnetic isolation ring 94 is a rotating body structure. The upper and lower sides of the magnetic isolation ring 94 are respectively provided with a groove structure 941. The core cover 92 and the valve body 1 are sealed by the groove structure 941, and the core cover 92 and the valve body 1 are precisely positioned radially. A second boss 923 is radially provided 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 fit with the inner side wall of the groove structure 941 on the upper part of the magnetic isolation ring 94. The interference sealing surface can seal the matching area between the core cover 92 and the magnetic isolation ring 94 to prevent leakage. The bottom surface of the boss axially abuts against the bottom surface of the groove structure 941 of the magnetic isolation ring 94. A sealing ring assembly groove 942 is provided on the outer side wall of the magnetic isolation ring 94. A sealing ring 943 is arranged in the sealing ring assembly groove 942. The sealing ring 943 can seal the gap between the outer side wall of the magnetic isolation ring 94 and the inner side 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 .

[0103] According to some optional embodiments of the present invention, combined with Figure 1 ,as well as Figure 19-Figure 23The valve body 1 includes a first valve body 1 and a second valve body 1. The first valve body 1 is located between the second valve body 1 and the piston rod 8. The second valve body 1 is formed with an inlet 121 and an outlet 122. Thus, the fluid can flow into the overflow valve seat 2 from the inlet 121, and then flow through the circulation channel 61 to the outlet 122 and then flow out. The first valve body 1 is a rotating body structure, which is made of magnetic material. After the coil assembly 93 is magnetized, a magnetic force can be generated to make the magnetic core 91 and the valve body 1 move and attract each other. A conical boss 111 is provided on the top of the first valve body 1, and the sink 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 1, so as to accurately position the magnetic isolation ring 94 in the radial direction. An external thread structure 112 is provided on the outer wall of the first valve body 1. The external thread structure 112 of the first valve body 1 is spirally matched with the internal thread structure 81 of the piston rod 8, so that the magnetic isolation ring 94, the core cover 92, the coil assembly 93 and other components are abutted and fixed in the piston rod 8. A circular recessed groove 113 is provided in the middle area of ​​the upper side of the first valve body 1. The recessed groove 113 is formed on the conical boss 111. The outer peripheral surface of the lower part of the magnetic core 91 is clearance-matched with the recessed groove 113 of the first valve body 1, and the magnetic core 91 can move axially along the recessed groove 113. A second through hole 13 is provided in the middle of the first valve body 1. A second guide sleeve 131 is provided in the second through hole 13. The second guide sleeve 131 is radially matched with the pilot valve plug 10. The outer side wall of the second guide sleeve 131 is formed with at least one flow groove 251 (not shown) as a channel for the circulation of oil or gas up and down.

[0104] According to some optional embodiments of the present invention, combined with Figure 1 and Fig. 20 , a convex rib 14 extending toward the relief valve body 6 is provided in the first valve body 1, and the relief valve body 6 is provided in the first valve body 1, and the outer peripheral wall of the relief valve body 6 is sealed and matched with the inner side wall of the first valve body 1, and the inner side wall of the matching groove 15 of the relief valve body 6 away from the relief valve seat 2 is sealed and matched with the outer side wall of the convex rib 14 of the inner cavity of the first valve body 1. With such a configuration, it is not easy for oil to flow between the outer peripheral surface of the relief valve body 6 and the inner wall surface of the first valve body 1, and the matching of the matching groove 15 and the convex rib 14 improves the assembly stability of the relief valve body 6 and the first valve body 1, thereby improving the reliability of the movement of the relief valve body 6, and further improving the use reliability of the damping adjustment module 100.

[0105] According to some optional embodiments of the present invention, combined with Fig.23The lower end surface of the first valve body 1 and the upper end surface of the second valve body 1 are connected and fixed, and a plurality of side through holes (not shown) are provided on the side wall of the second valve body 1. A first external thread 123 is provided on the outer side wall of the second valve body 1, and the first external thread 123 is connected and fixed 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 1, and the internal thread is connected and fixed with the second external thread 24 of the overflow valve seat 2. Therefore, it is convenient to assemble the second valve body 1 and the piston valve 201, and also convenient to assemble the second valve body 1 and the overflow 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.

[0106] According to some optional embodiments of the present invention, combined with Fig.19 The relief valve body 6 is a rotating body structure, and two oil flow channels 63 are arranged on the relief valve body 6, one of which extends along the axial direction of the relief valve body 6 and passes through the upper surface and the lower surface of the relief valve body 6, and one end of the other oil flow channel 63 extends to pass through the upper surface of the relief valve body 6 and cooperates with the lower end of the pilot valve plug 10, and the other end of the other oil flow channel 63 extends along the radial direction of the relief valve body 6 and passes through the outer peripheral surface of the relief valve body 6. Therefore, the oil can flow in the two oil flow channels 63, so as to facilitate the flow of the oil in the damping adjustment module 100.

[0107] According to some embodiments of the present invention, Figure 2 A first pressure-bearing cavity 64 is defined between the overflow valve plate and the overflow valve body, a second pressure-bearing cavity 33 is defined between the overflow valve plate and the overflow valve seat, the surface of the overflow valve plate corresponding to the first pressure-bearing cavity 64 is the first pressure-bearing surface 34, the surface of the overflow valve plate corresponding to the second pressure-bearing cavity 33 is the 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 is movable between a first position and a second position, when the overflow valve body is in the first position, the two sides of the overflow valve plate are respectively in contact with the overflow valve body and the overflow valve seat, when the overflow valve body is in the second position, the overflow valve plate is separated from at least one of the overflow valve body or the overflow valve seat.

[0108] For example, in Figure 2In the example, the overflow valve seat 2 is a rotating body structure, the space defined between the upper surface of the overflow valve disc 3 and the lower part of the overflow valve body 6 is the first pressure-bearing chamber 64, and the space defined between the lower surface of the overflow valve disc 3 and the upper part of the overflow valve seat 2 is the second pressure-bearing chamber 33. The above-mentioned "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 to the corresponding space, that is, the space that bears the fluid pressure. When the upper surface of the overflow valve disc 3 stops against the overflow valve body 6, the surface where the fluid in the first pressure-bearing chamber 64 contacts the upper side of the overflow valve disc 3 is the first pressure-bearing surface 34, and when the lower surface of the overflow valve disc 3 stops against the overflow valve seat 2, the surface where the fluid in the second pressure-bearing chamber 33 contacts the lower side of the overflow valve disc 3 is the second pressure-bearing surface 35. When the relief valve body 6 is in the first position, the fluid flowing in from the inlet 121 cannot flow to the outlet 122, that is, the damping adjustment module 100 is in a closed state. In this state, when the pressure at the second pressure-bearing surface 35 gradually increases to overcome the force of the relief valve body 6 on the relief valve plate 3, the relief valve plate 3 can move upward to separate the lower surface of the relief valve plate 3 from the relief valve seat 2, and the fluid can flow out from between the relief valve plate 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, it is convenient to adjust the size of the gap between the relief valve plate 3 and the relief valve seat 2 through 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 fluid pressure on the relief valve plate 3 when it contacts the fluid. The second pressure-bearing chamber 33 may include the space of the fluid groove 25 and the relief valve chamber 22.

[0109] When the overflow valve body 6 is in the second position, the overflow valve disc 3 can be in the following states: First, the lower surface of the overflow valve disc 3 abuts against the upper part of the overflow valve seat 2, the upper surface of the overflow valve disc 3 is separated from the lower part of the overflow valve body 6, and the fluid can flow out from between the upper surface of the overflow valve disc 3 and the overflow valve body 6. Second, the lower surface of the overflow valve disc 3 is separated from the upper part of the overflow valve seat 2, the upper surface of the overflow valve disc 3 abuts against the lower part of the overflow valve body 6, and the fluid can flow out from between the lower surface of the overflow valve disc 3 and the overflow valve seat 2. Third, the lower surface of the overflow valve disc 3 is separated from the upper part of the overflow valve seat 2, the lower surface of the overflow valve disc 3 is separated from the upper part of the overflow valve seat 2, and the fluid can flow out from the upper surface or lower surface of the overflow valve disc 3.

[0110] According to some embodiments of the present invention, Figure 2, the projection surface of the relief valve body 6 on the relief valve plate 3 along the thickness direction of the relief valve plate 3 is the first pressure-bearing surface 34. For example, when the relief valve body 6 and the relief valve plate 3 abut against each other, the surface formed by the contact between the lower end of the relief valve body 6 and the relief valve plate 3 is the first pressure-bearing surface 34. This is conducive to the contact between the fluid and the first pressure-bearing surface 34, and is also conducive to the limitation of the first pressure-bearing surface 34.

[0111] According to some embodiments of the present invention, referring to Figure 2 A fluid groove 25 is formed on the side of the overflow valve seat 2 facing the overflow valve plate 3, a 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 a second pressure-bearing surface 35. Figure 2 In the example, a fluid groove 25 is formed on the upper end surface of the overflow valve seat 2, and the cross-sectional area of ​​the fluid groove 25 is larger than the cross-sectional area of ​​the sealing surface formed when the overflow valve body 6 and the overflow valve disc 3 are in contact, so that the second pressure-bearing surface 35 formed when the overflow valve disc 3 abuts against the overflow valve seat 2 is larger than the first pressure-bearing surface 34 formed when the overflow valve disc 3 abuts against the overflow valve body 6. For example, the above-mentioned second pressure-bearing surface 35 is the surface in the fluid groove 25 that contacts the lower surface of the overflow valve disc 3, and the above-mentioned first pressure-bearing surface 34 is the surface where the fluid between the overflow valve body 6 and the overflow valve disc 3 contacts the upper surface of the overflow valve disc 3. Therefore, the fluid flowing in from the inlet 121 can flow between the overflow valve disc 3 and the overflow valve body 6, and then flow to the outlet 122 through the flow channel 61. In addition, when the pressure exerted by the fluid on the lower surface of the overflow valve plate 3 (that is, the above-mentioned second pressure-bearing surface 35) is greater than the sum of the force exerted by the overflow valve body 6 on the upper surface of the overflow valve plate 3 and the pressure exerted by the fluid on the above-mentioned first pressure-bearing surface 34 of the overflow valve plate 3, the fluid can push the overflow valve plate 3 and the overflow valve body 6 to move upward to separate the overflow valve plate 3 and the upper end surface of the overflow valve seat 2, so that the fluid in the fluid groove 25 flows into the recovery chamber 206 through the outlet 122.

[0112] According to some embodiments of the present invention, Figure 6 At least one through groove 251 is formed on the side wall of the fluid groove 25, and the through groove 251 communicates the fluid groove 25 with the outside of the overflow valve seat 2. The overflow valve seat 2 is formed with an overflow valve cavity 22 on the side away from the overflow valve plate 3, and at least one first communication hole 252 is formed on the bottom wall of the fluid groove 25, and the first communication hole 252 communicates the fluid groove 25 with the overflow valve cavity 22.

[0113] For example, in Figure 6In the example, the side wall of the fluid groove 25 is formed with a plurality of through grooves 251, and the plurality of through grooves 251 are arranged at intervals along the side wall of the fluid groove 25, and the fluid groove 25 is connected to the outside of the overflow valve seat 2 through the through grooves 251. A plurality of first communication holes 252 are formed on the bottom wall of the fluid groove 25, and the plurality of first communication holes 252 are arranged at intervals along the circumference of the overflow valve seat 2, and a plurality of second communication holes 31 are formed on the overflow valve plate 3, and the plurality of second communication holes 31 are arranged at intervals along the circumference of the overflow valve seat 2. Thus, the fluid flowing in from the inlet 121 can flow through the first communication holes 252 and the second communication holes 31 to between the overflow valve plate 3 and the overflow valve body 6, and then flow through the circulation channel 61 to the outlet 122. In addition, when the side surfaces of the relief valve plate 3 are respectively stopped against the relief valve seat 2 and the relief valve body 6, the fluid in the recovery chamber 206 can flow to the fluid groove 25 through the through groove 251 and then flow into the relief valve chamber 22, so as to facilitate the adjustment of the damping force. It should be noted that the cross-sectional shape of the through groove 251, the cross-sectional shape of the first connecting hole 252 and the cross-sectional shape of the second connecting hole 31 can be specifically set according to actual use to better meet the actual application.

[0114] The shock absorber 200 (not shown) according to the second embodiment of the utility model comprises the damping adjustment module 100 according to the first embodiment.

[0115] According to the shock absorber 200 of the second embodiment of the utility model, by adopting the above-mentioned damping adjustment module 100, the damping adjustment module 100 can be applied to different working states of the shock absorber 200, which is conducive to controlling and adjusting the damping force and improving the performance of the shock absorber 200. Moreover, the structure of the shock absorber 200 is simplified, which is easy to adjust, is conducive to the production, processing and use of the shock absorber 200, and can make the vehicle have a better vibration reduction effect under different road conditions.

[0116] According to some optional embodiments of the present invention, combined with Figure 1 The shock absorber 200 includes an outer shell 202 and an inner shell 203. The inner shell 203 is nested in the outer shell 202. The outer shell 202 and the inner shell 203 together define a liquid storage chamber 2031 for storing liquid. The liquid storage chamber 2031 stores fluids of a certain pressure, such as oil and inert gas. The shock absorber 200 also includes a bottom valve 204, which is arranged at the bottom of the inner shell 203. The inner shell 203 is provided with a piston valve 201 and the damping adjustment module 100 of the first embodiment. The cavity between the bottom valve 204 and the piston valve 201 is a compression cavity 205, and the cavity of the piston valve 201 away from the compression cavity 205 is a recovery cavity 206. The damping adjustment module 100 of the first embodiment is arranged in the recovery cavity 206. Therefore, 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.

[0117] According to some optional embodiments of the present invention, referring to Figure 1 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.

[0118] For example, in the example of the figure, 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 above-mentioned recovery chamber 206, and the recovery chamber 206 is connected to the inside of the valve body 1 through the outlet 122. When the relief valve body 6 moves in the valve body 1, the damping force of the fluid between the inlet 121 and the outlet 122 can be adjusted by adjusting the flow of the fluid between the relief valve plate and the relief valve seat 2 and the relief valve body 6, so as to be more conducive to the use of the shock absorber 200.

[0119] The flow paths of the fluid in different states of the shock absorber 200 in the present application are roughly as follows:

[0120] When a vehicle equipped with the shock absorber 200 of the present solution is traveling on a relatively flat road, when the coil is not energized, the overflow valve body 6 and the overflow valve plate 3 are in a normally open state in the flow channel 61 under the joint action of the first elastic member 5 and the second elastic member 7, which is 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 overflow valve body 6 and the overflow valve plate 3), the second connecting hole 31 and the first connecting hole 252 into the compression chamber 205. At the same time, 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 is large, the fluid damping is small, and the shock absorber 200 behaves as "soft" (the flow path of the above oil is as shown in FIG. 1 ). Figure 1 direction indicated by arrow B).

[0121] When the piston rod 8 is pushed downward, the pressure in the recovery chamber 206 decreases, and the pressure in the compression chamber 205 increases. The oil from the compression chamber 205 pushes the relief valve plate 3 to abut against the bottom end surface of the relief valve body 6. At this time, the oil flows into the recovery chamber 206 from the large flow channel between the relief valve plate 3 and the relief valve seat 2. At the same time, the oil in the compression chamber 205 flows into the liquid storage chamber 2031 through the bottom valve 204. The gas in the liquid storage chamber 2031 is compressed to absorb energy and reduce vibration. In this state, the oil flow is large and the fluid damping is small (the flow path of the above oil is as shown in FIG. 2 ). Fig.24When 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 with a large flow rate, small fluid damping, and good riding comfort.

[0122] When a vehicle equipped with the shock absorber 200 of the present solution is traveling on a road with potholes and uneven surfaces, when the coil is energized, the magnetic core 91 is pushed downward by the magnetic force, and the pilot valve plug 10 pushes the relief valve body 6, the bottom end surface of the relief valve body 6 abuts against the relief valve plate 3, and the relief valve plate 3 abuts against the relief valve seat 2, thereby closing (or partially closing) the flow channel 61 between the relief valve plate 3 and the relief valve body 6 and the above-mentioned large flow channel between the relief valve seat 2 and the relief valve plate 3. When the piston rod 8 vibrates upward, the pressure of the recovery chamber 206 increases, and the 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 plate 3, and the relief valve plate 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, showing "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 electromagnetic force is overcome to push open the pilot valve plug 10 and then flow out into the overflow valve seat 2 (that is, the overflow valve chamber 22), and the damping decreases; 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, 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 further decreases (the flow path of the above oil is as shown in FIG. 2 ). Fig.25 direction indicated by arrow D).

[0123] When the piston rod 8 vibrates downward, the pressure in the compression chamber 205 increases, and the 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 against the relief valve plate 3, and the relief valve plate 3 abuts against 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, which appears to be "hard"; in the Q2 stage, a large amount of oil is accumulated in the relief valve seat 2, and the oil pressure increases. When the pressure is greater than the electromagnetic force, the relief valve plate 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 plate 3, and the damping decreases (the flow path of the above oil is as shown in FIG. Fig.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 changes, the fluid damping changes, and the ride comfort is better.

[0124] A suspension system (not shown) according to an embodiment of the third aspect of the utility model comprises a shock absorber 200 according to the embodiment of the second aspect.

[0125] According to the suspension system of the third embodiment of the utility model, by adopting the above-mentioned shock absorber 200, the vibration reduction performance is good, and the performance of the suspension system is improved.

[0126] The vehicle according to the fourth aspect of the utility model (not shown) comprises the damping adjustment module 100 according to the first aspect, or the shock absorber 200 according to the second aspect, or the suspension system according to the third aspect.

[0127] According to the vehicle of the fourth aspect of the present utility model, the driving comfort of the vehicle can be improved by adopting the above-mentioned damping adjustment module 100, or shock absorber 200, or suspension system.

[0128] The damping adjustment module 100 , the shock absorber 200 , the suspension system and other components and operations of the vehicle according to the embodiment of the utility model are well known to those skilled in the art and will not be described in detail here.

[0129] In the description of the present invention, 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 invention and simplifying the description, and do not indicate or imply that the referred device or element 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.

[0130] 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 utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0131] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate 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 damping adjustment module, characterized in that: include: Valve body; An overflow valve seat, wherein the overflow valve seat is disposed in the valve body, and the overflow valve seat and the valve body jointly define a valve cavity; A relief valve body, the relief valve body being movably disposed in the valve cavity; A relief valve plate, the relief valve plate being movably arranged between the relief valve body and the relief valve seat; A guide rod, wherein the guide rod is movably provided through the overflow valve seat and the overflow valve plate, and the guide rod has a first abutment portion and a second abutment portion, wherein 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 is disposed between the first abutting portion and the overflow valve seat so that the second abutting portion presses the overflow valve plate onto the overflow valve seat.

2. The damping adjustment module according to claim 1, characterized in that: A relief valve cavity is formed on the side of the relief valve seat facing away from the relief valve plate, the first abutment portion is located in the relief valve cavity, the first elastic member abuts between the first abutment portion and the inner wall of the relief valve cavity, and the second abutment portion is located outside the relief valve cavity.

3. The damping adjustment module according to claim 2, characterized in that: The guide rod comprises: A guide rod body, wherein the second abutment portion is provided at one end of the guide rod body adjacent to the overflow valve plate; A limit 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 limit member, and the limit member constitutes the first abutting portion.

4. The damping adjustment module according to claim 3, characterized in that: A through hole for passing the guide rod body is formed on the overflow valve seat, and the guide rod body is in sliding sealing cooperation with the through hole.

5. The damping adjustment module according to claim 3, characterized in that: The limiting member is a limiting nut, and the limiting member is threadedly connected to the other end of the guide rod body.

6. The damping adjustment module according to claim 3, characterized in that: The second abutting portion and the guide rod body are integrally formed.

7. The damping adjustment module according to claim 1, characterized in that: The first elastic member is a spring, and the first elastic member is sleeved outside the guide rod.

8. The damping adjustment module according to claim 1, characterized in that: A first pressure-bearing cavity is defined between the relief valve plate and the relief valve body, a second pressure-bearing cavity is defined between the relief valve plate and the relief valve seat, a surface of the relief valve plate corresponding to the first pressure-bearing cavity is a first pressure-bearing surface, a surface of the relief valve plate corresponding to the second pressure-bearing cavity is a second pressure-bearing surface, and an area of ​​the first pressure-bearing surface is smaller than an 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 plate are respectively abutted against the overflow valve body and the overflow valve seat. When the overflow valve body is located at the second position, the overflow valve plate is separated from at least one of the overflow valve body and the overflow valve seat.

9. The damping adjustment module according to claim 8, characterized in that: The projection surface of the relief valve body on the relief valve plate along the thickness direction of the relief valve plate is the first pressure-bearing surface.

10. The damping adjustment module according to claim 8, characterized in that: A fluid groove is formed on one side of the overflow valve seat facing the overflow valve plate, 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.

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

12. The damping adjustment module according to claim 10, characterized in that: A relief valve cavity is formed on a side of the relief valve seat facing away from the relief valve plate, and at least one first connecting hole is formed on the bottom wall of the fluid groove, wherein the first connecting hole connects the fluid groove and the relief valve cavity.

13. The damping adjustment module according to any one of claims 1 to 12, characterized in that: Further including: The second elastic member is stopped between the second abutting portion and the overflow valve body, and the second elastic member always pushes the overflow valve body in a direction away from the overflow valve seat.

14. The damping adjustment module according to claim 13, characterized in that: 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.

15. The damping adjustment module according to claim 13, characterized in that: The second elastic member is a spring, and the second elastic member is sleeved outside the guide rod.

16. A shock absorber, characterized in that: The invention comprises a damping adjustment module according to any one of claims 1 to 15.

17. The shock absorber according to claim 16, characterized in that A compression chamber and a restoring chamber are defined in the shock absorber, and 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.

18. A suspension system, characterized in that: Comprising a vibration absorber according to claim 16 or 17.

19. A vehicle, characterized in that: It comprises a damping adjustment module according to any one of claims 1 to 10, or a shock absorber according to claim 16 or 17, or a suspension system according to claim 18.

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