Self-adaptive regulating valve and shock absorber

Abstract

The utility model provides a self-adaptive regulating valve and a shock absorber, and the self-adaptive regulating valve comprises a valve seat, a valve rod, a first valve rod and a second valve rod, a second containing cavity is formed in the valve body, and the valve body is provided with a first channel and a second channel which communicate with the second containing cavity; the valve core comprises a core shaft, and a first valve plate and a second valve plate which are arranged on the core shaft; the first valve plate is located in the second containing cavity, blocks the first channel and is used for deforming under the action of oil pressure in the first channel so that the first channel, the second containing cavity and the second channel can form a first oil passing path. The second valve plate is located in the first containing cavity and blocks the second containing cavity, the mandrel is provided with a third channel, the two ends of the third channel communicate with the first containing cavity and the first channel correspondingly, and the second valve plate is used for deforming under the action of oil pressure in the second channel. The second channel, the second containing cavity, the first containing cavity, the third channel and the first channel form a second oil passing path. According to the invention, accurate matching of different working conditions is realized.

Description

Technical Field

[0001] This application relates to the field of shock absorber technology, specifically to an adaptive regulating valve and a shock absorber. Background Technology

[0002] The adjustment valve of a car's shock absorber is a core component of the suspension system, optimizing vehicle driving conditions by dynamically adjusting damping force. Its working principle involves controlling the flow or viscosity of hydraulic oil to alter the shock absorber's stiffness, adapting to different road conditions and driving modes (such as switching between comfort and sport modes).

[0003] Existing regulating valves are unable to respond to instantaneous pressure fluctuations on the road surface and cannot accurately match the damping requirements under dynamic working conditions. This results in the shock absorber always being in a single state of "either soft or hard" under complex road conditions, causing drivers and passengers to experience either increased bumps or insufficient support for a long time. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this application provides an adaptive regulating valve and a shock absorber.

[0005] The specific technical solution is as follows:

[0006] An adaptive control valve, comprising:

[0007] The valve seat has a first receiving cavity;

[0008] A valve body is disposed on the valve seat, the valve body having a second receiving cavity, and the valve body having a first channel and a second channel, the second receiving cavity being connected to the first channel and the second channel respectively;

[0009] A valve core is located in the first receiving cavity and the second receiving cavity. The valve core includes a mandrel and a first valve plate and a second valve plate disposed on the mandrel.

[0010] Wherein, the first valve plate is located in the second accommodating cavity and blocks the first channel, and the first valve plate is used to deform under the action of the oil pressure in the first channel so that the first channel, the second accommodating cavity and the second channel form a first oil passage path;

[0011] The second valve plate is located in the first receiving cavity and blocks the second receiving cavity. The mandrel is provided with a third channel. The two ends of the third channel are respectively connected to the first receiving cavity and the first channel. The second valve plate is used to deform under the action of the oil pressure in the second channel so that the second channel, the second receiving cavity, the first receiving cavity, the third channel and the first channel form a second oil passage.

[0012] In one embodiment, the third channel has an oil inlet and an oil outlet, the oil inlet being connected to the first receiving cavity, the oil outlet being connected to the first channel, and the diameter of the oil inlet being larger than the diameter of the oil outlet.

[0013] In one embodiment, the third channel includes an oil inlet section and an oil outlet section. The oil inlet section is connected to the first accommodating cavity through the oil inlet end, and the oil outlet section is connected to the first channel through the oil outlet end. The diameter of the oil inlet section is larger than the diameter of the oil outlet section.

[0014] Alternatively, the diameter of the third channel gradually decreases along the direction from the oil inlet to the oil outlet.

[0015] In one embodiment, the adaptive regulating valve further includes a first limiting member located within the first receiving cavity and dividing the first receiving cavity into a first receiving cavity one and a first receiving cavity two. The first limiting member is provided with an oil passage hole, and the first receiving cavity one and the first receiving cavity two are connected through the oil passage hole.

[0016] The second valve plate is located in the first receiving cavity one, the spindle is engaged with the first limiting member, and a portion of the spindle passes through the first limiting member and extends into the first receiving cavity two, so that the third channel communicates with the first receiving cavity two.

[0017] In one embodiment, the first limiting member is provided with an elastic member, which is located between the bottom wall of the valve seat and the first limiting member. The elastic member has a hollow structure, and the first receiving cavity is formed between the elastic member, the bottom wall of the valve seat, and the first limiting member.

[0018] In one embodiment, the adaptive regulating valve further includes a second limiting member located between the elastic member and the bottom wall of the valve seat. The bottom wall of the valve seat is provided with a fourth channel communicating with the outside. The second limiting member is used to drive the elastic member, the first limiting member, and the mandrel to move in the direction of blocking the first channel under the action of the oil pressure in the fourth channel.

[0019] In one embodiment, the adaptive regulating valve further includes a flow guide, one side of which contacts the valve body, and the other side of which contacts the valve seat and the second valve plate; the flow guide is provided with a notch to form a gap between the second valve plate and the valve body, and the first receiving cavity and the second receiving cavity are connected through the notch.

[0020] In one embodiment, the first valve plate and the second valve plate are separated, and the distance between the first valve plate and the second valve plate is between 0.1 mm and 5 mm.

[0021] In one embodiment, the first valve plate includes a first valve plate one, a first valve plate two, and a first valve plate three arranged sequentially, wherein the outer diameter of the first valve plate two is smaller than the outer diameter of the first valve plate one, and the outer diameter of the first valve plate two is smaller than the outer diameter of the first valve plate three.

[0022] A shock absorber, characterized in that it includes a cylinder and a piston assembly disposed on the cylinder, the piston assembly including a piston rod and a piston body, the piston rod being movably disposed on the cylinder, and the piston body being sleeved on the piston rod and abutting against the inner wall of the cylinder to divide the cylinder into an upper cylinder and a lower cylinder;

[0023] The piston rod is provided with an adaptive regulating valve as described in any of the above embodiments at one end of the lower cylinder. The piston rod is provided with a fifth channel, one end of which is connected to the upper cylinder and the other end of which is connected to the first channel of the adaptive regulating valve.

[0024] This application has at least the following beneficial effects:

[0025] This application provides an adaptive regulating valve, comprising: a valve seat having a first receiving cavity; a valve body disposed on the valve seat, the valve body forming a second receiving cavity, and the valve body having a first channel and a second channel, the second receiving cavity being connected to the first channel and the second channel respectively; a valve core located within the first receiving cavity and the second receiving cavity, the valve core including a mandrel and a first valve plate and a second valve plate disposed on the mandrel; wherein, the first valve plate is located within the second receiving cavity and blocks the first channel, the first valve plate being deformed under the action of oil pressure within the first channel to form a first oil passage path by the first channel, the second receiving cavity, and the second channel; wherein, the second valve plate is located within the first receiving cavity and blocks the second receiving cavity, the mandrel having a third channel, the two ends of the third channel being connected to the first receiving cavity and the first channel respectively, the second valve plate being deformed under the action of oil pressure within the second channel to form a second oil passage path by the second channel, the second receiving cavity, the first receiving cavity, the third channel, and the first channel.

[0026] This application also provides a shock absorber, including a cylinder and a piston assembly disposed on the cylinder. The piston assembly includes a piston rod and a piston body. The piston rod is movably disposed on the cylinder. The piston body is sleeved on the piston rod and abuts against the inner wall of the cylinder to divide the cylinder into an upper cylinder and a lower cylinder. An adaptive regulating valve as described above is disposed at one end of the piston rod located in the lower cylinder. A fifth channel is disposed on the piston rod, one end of which is connected to the upper cylinder and the other end of which is connected to the first channel of the adaptive regulating valve.

[0027] The adaptive regulating valve provided in this application, when the piston rod moves upward, the first valve plate is deformed by the oil pressure in the first channel, forming a first oil passage path (first channel - second receiving cavity - second channel), realizing compression stroke damping adjustment; and when the piston rod moves downward, the second valve plate is deformed by the oil pressure in the second channel, and forms a second oil passage path through the third channel (second channel - second receiving cavity - first receiving cavity - third channel - first channel), realizing rebound stroke damping adjustment. The adaptive regulating valve provided in this application has bidirectional independent adjustment function, which can independently control the damping force of the compression and rebound strokes, achieving precise matching for different working conditions. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the shock absorber provided in this embodiment;

[0030] Figure 2 for Figure 1 Local magnification of region A Figure 1 ;

[0031] Figure 3 for Figure 1 Local magnification of region A Figure 2 ;

[0032] Figure 4 for Figure 1 Local magnification of region A Figure 3 ;

[0033] Figure 5 for Figure 2 A magnified view of a portion of region B in the middle;

[0034] Figure 6 for Figure 2 A magnified view of a portion of region C.

[0035] Figure label:

[0036] 1-Adaptive regulating valve; 11-Valve seat; 12-Valve body; 13-Valve core; 14-First limiting element; 15-Elastic element; 16-Second limiting element; 17-Flow guide element; 111-First receiving cavity; 112-Valve seat bottom wall; 121-Second receiving cavity; 123-First channel; 124-Second channel; 131-Spindle; 132-First valve plate; 133-Second valve plate; 141-Oil passage hole; 171-Notch; 1111 - First receiving cavity one; 1112 - First receiving cavity two; 1121 - Fourth channel; 1311 - Third channel; 1321 - First valve plate one; 1322 - First valve plate two; 1323 - First valve plate three; 13111 - Oil inlet section; 13112 - Oil outlet section; 131111 - Oil inlet end; 131121 - Oil outlet end; X - First oil passage path; Y - Second oil passage path; Z - Third oil passage path;

[0037] 2-Cylinder block; 21-Upper cylinder block; 22-Lower cylinder block;

[0038] 3-Piston assembly; 31-Piston rod; 32-Piston body; 311-Fifth channel. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0040] In the description of this application, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0041] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] Existing regulating valves are unable to respond to instantaneous pressure fluctuations on the road surface and cannot accurately match the damping requirements under dynamic working conditions. This results in the shock absorber always being in a single state of "either soft or hard" under complex road conditions, causing drivers and passengers to experience either increased bumps or insufficient support for a long time.

[0043] Based on this, this embodiment provides an adaptive regulating valve, such as Figures 1-6 As shown, the adaptive regulating valve 1 in this embodiment includes:

[0044] Valve seat 11 has a first receiving cavity 111;

[0045] The valve body 12 is disposed on the valve seat 11. The valve body 12 forms a second receiving cavity 121, and the valve body 12 is provided with a first channel 123 and a second channel 124. The second receiving cavity 121 is connected to the first channel 123 and the second channel 124 respectively.

[0046] The valve core 13 is located in the first receiving cavity 111 and the second receiving cavity 121. The valve core 13 includes a spindle 131 and a first valve plate 132 and a second valve plate 133 disposed on the spindle 131.

[0047] The first valve plate 132 is located in the second receiving cavity 121 and blocks the first channel 123. The first valve plate 132 is used to deform under the action of the oil pressure in the first channel 123 so that the first channel 123, the second receiving cavity 121 and the second channel 124 form a first oil passage path X.

[0048] The second valve plate 133 is located in the first receiving cavity 111 and blocks the second receiving cavity 121. The spindle 131 is provided with a third channel 1311. The two ends of the third channel 1311 are respectively connected to the first receiving cavity 111 and the first channel 123. The second valve plate 133 is used to deform under the action of the oil pressure in the second channel 124 so that the second channel 124, the second receiving cavity 121, the first receiving cavity 111, the third channel 1311 and the first channel 123 form a second oil passage path Y.

[0049] The adaptive regulating valve 1 provided in this embodiment, when the piston rod 31 moves upward, the first valve plate 132 is deformed by the oil pressure in the first channel 123, forming a first oil passage path X (first channel 123-second receiving cavity 121-second channel 124), realizing compression stroke damping adjustment; and when the piston rod 31 moves downward, the second valve plate 133 is deformed by the oil pressure in the second channel 124, and forms a second oil passage path Y through the third channel 1311 (second channel 124-second receiving cavity 121-first receiving cavity 111-third channel 1311-first channel 123), realizing rebound stroke damping adjustment. The adaptive regulating valve 1 provided in this application has a bidirectional independent adjustment function, which can independently control the damping force of the compression and rebound strokes, and achieve precise matching for different working conditions.

[0050] like Figure 3 and Figure 5 As shown, in one embodiment, the adaptive regulating valve 1 further includes a first limiting member 14, which is located in the first receiving cavity 111 and divides the first receiving cavity 111 into a first receiving cavity one 1111 and a first receiving cavity two 1112. The first limiting member 14 is provided with an oil passage hole 141, and the first receiving cavity one 1111 and the first receiving cavity two 1112 are connected through the oil passage hole 141.

[0051] The second valve plate 133 is located in the first receiving cavity 1111, the spindle 131 is engaged with the first limiting member 14, and a part of the spindle 131 passes through the first limiting member 14 and extends into the second receiving cavity 1112, so that the third channel 1311 is connected to the second receiving cavity 1112.

[0052] This embodiment uses a first limiting member 14 to position the spindle 131 and maintains a preset distance between the end of the spindle 131 and the bottom wall 112 of the valve seat 11, ensuring that the third channel 1311 remains connected to the first receiving cavity 111. This avoids the second oil path Y being interrupted and the rebound stroke damping adjustment of the adaptive regulating valve 1 failing due to excessive oil pressure in the first channel 123 causing the valve core 13 to move to the point where the end of the spindle 131 contacts the bottom wall 112 of the valve seat 11, thus improving the stability of the adaptive regulating valve 1.

[0053] like Figure 3 and Figure 5 As shown, in one embodiment, the first limiting member 14 is provided with an elastic member 15, which is located between the bottom wall 112 of the valve seat 11 and the first limiting member 14. The elastic member 15 has a hollow structure, and a first receiving cavity 1112 is formed between the elastic member 15, the bottom wall 112 of the valve seat 11 and the first limiting member 14.

[0054] In this embodiment, the spindle 131 is used to drive the first limiting member 14 towards the bottom wall 112 of the valve seat 11 and squeeze the elastic member 15 when the oil pressure in the first channel 123 continues to increase, so that the elastic member 15 contracts to provide movement space for the spindle 131. By providing the elastic member 15, when the oil pressure in the first channel 123 is high and the deformation of the first valve plate 132 still cannot relieve the oil pressure in the first channel 123, the elastic member 15 contracts to provide movement space for the spindle 131, thereby increasing the oil flow rate of the first oil passage X. Furthermore, when the oil pressure in the first channel 123 decreases, the elastic member 15 drives the first limiting member 14 and the spindle 131 to reset, so that the first valve plate 132 re-seals the first channel 123.

[0055] Similarly, in this embodiment, the spindle 131 is also used to drive the first limiting member 14 to move towards the bottom wall 112 of the valve seat 11 and squeeze the elastic member 15 when the oil pressure in the second channel 124 continues to increase, so that the elastic member 15 contracts to provide movement space for the spindle 131. When the oil pressure in the second channel 124 is large, and the deformation of the second valve plate 133 still cannot relieve the oil pressure in the second channel 124, the elastic member 15 contracts to provide movement space for the spindle 131, thereby allowing the first valve plate 132 to release the blockage of the first channel 123, so that the oil can enter the first channel 123 from the second channel 124 through the first oil passage path X, increasing the oil passage volume. Furthermore, when the oil pressure in the second channel 124 decreases, the elastic member 15 drives the first limiting member 14 and the spindle 131 to reset, so that the first valve plate 132 re-blocks the first channel 123.

[0056] This embodiment enhances the damping adjustment capability of the adaptive regulating valve 1, making it highly adaptable and providing excellent shock absorption performance.

[0057] In one embodiment, the elastic element 15 is an elastic ring, which contacts the bottom wall 112 and the side wall of the valve seat 11, respectively, but is not limited to this.

[0058] like Figure 2 As shown, in one embodiment, the adaptive regulating valve 1 further includes a second limiting member 16, which is located between the elastic member 15 and the bottom wall 112 of the valve seat 11. The bottom wall 112 of the valve seat 11 is provided with a fourth channel 1121 communicating with the outside. The second limiting member 16 is used to drive the elastic member 15, the first limiting member 14 and the spindle 131 to move in the direction of blocking the first channel 123 under the action of the oil pressure in the fourth channel 1121.

[0059] When the oil pressure in the second channel 124 is high, the second valve plate 133 deforms and the valve core 13 moves to squeeze the elastic element 15 to increase the oil flow. However, when the oil flow is excessive, the internal pressure of the regulating valve will rise abnormally, which will damage the damping characteristics of the regulating valve and cause the energy to be unable to be effectively absorbed.

[0060] Therefore, in this embodiment, a fourth channel 1121 is provided on the bottom wall 112 of the valve seat 11. Since the oil pressure in the fourth channel 1121 is the same as the oil pressure in the second channel 124 and the direction is opposite, this embodiment limits the movement of the valve core 13 by the oil pressure in the fourth channel 1121, avoids excessive oil flow in the regulating valve, ensures the normal use of the regulating valve, and improves the stability of the regulating valve.

[0061] like Figure 5 As shown, in one embodiment, the adaptive regulating valve 1 further includes a flow guide 17. One side of the flow guide 17 contacts the valve body 12, and the other side of the flow guide 17 contacts the valve seat 11 and the second valve plate 133. A notch 171 is provided on the flow guide 17 to form a gap between the second valve plate 133 and the valve body 12. The first receiving cavity 111 and the second receiving cavity 121 are connected through the notch 171. The second channel 124, the second receiving cavity 121, the notch 171, the first receiving cavity 111, the third channel 1311 and the first channel 123 form a third oil passage Z.

[0062] Specifically, the outer diameter of the second valve plate 133 is larger than the inner diameter of the second receiving cavity 121 and smaller than the inner diameter of the first receiving cavity 111.

[0063] In this embodiment, by setting a flow guide 17 and using the notch 171 on the flow guide 17 to form a third oil passage Z with a smaller flow rate, the regulating valve can adapt to low-frequency vibration conditions, thereby improving the regulating capability of the regulating valve.

[0064] like Figure 3 As shown, in one embodiment, the third channel 1311 has an oil inlet end 131111 and an oil outlet end 131121. The oil inlet end 131111 is connected to the first receiving cavity 111, and the oil outlet end 131121 is connected to the first channel 123. The diameter of the oil inlet end 131111 is larger than the diameter of the oil outlet end 131121.

[0065] This embodiment makes the diameter of the oil inlet end 131111 larger, which helps to reduce the resistance when the oil enters the third channel 1311, allowing the oil to flow in more smoothly, and makes the diameter of the oil outlet end 131121 smaller than the diameter of the oil inlet end 131111, increasing the flow rate of the oil when it flows out.

[0066] like Figure 3As shown, in one embodiment, the third channel 1311 includes an oil inlet section 13111 and an oil outlet section 13112. The oil inlet section 13111 is connected to the first receiving cavity 111 through the oil inlet end 131111, and the oil outlet section 13112 is connected to the first channel 123 through the oil outlet end 131121. The diameter of the oil inlet section 13111 is larger than the diameter of the oil outlet section 13112.

[0067] This embodiment features a segmented variable diameter design, which provides a stepped pressure difference and enables faster response, making it suitable for racing cars that require instantaneous damping adjustment.

[0068] In one embodiment, the diameter of the third channel 1311 gradually decreases along the direction from the oil inlet end 131111 to the oil outlet end 131121.

[0069] This embodiment uses a gradually narrowing diameter design to make the oil flow smooth, significantly improving lifespan and stability, and is suitable for passenger vehicles with long lifespan requirements.

[0070] like Figures 2-6 As shown, in one embodiment, the first valve plate 132 and the second valve plate 133 are separated, and the distance between the first valve plate 132 and the second valve plate 133 is between 0.1mm and 5mm.

[0071] In this embodiment, the first valve plate 132 and the second valve plate 133 are separated to provide deformation space for the first valve plate 132.

[0072] like Figure 6 As shown, in one embodiment, the first valve plate 132 includes a first valve plate 1321, a first valve plate 2 1322 and a first valve plate 3 1323 arranged sequentially. The outer diameter of the first valve plate 2 1322 is smaller than the outer diameter of the first valve plate 1321, and the outer diameter of the first valve plate 2 1322 is smaller than the outer diameter of the first valve plate 3 1323.

[0073] In this embodiment, by sequentially arranging the first valve plate 1321, the second valve plate 1322, and the third valve plate 1323, the overall thickness is increased, and the service life of the valve core 13 is improved. At the same time, the second valve plate 1322 with a smaller outer diameter is provided to provide deformation space for the first valve plate 1321, and the third valve plate 1323 with a larger outer diameter is provided to limit the first valve plate 1321 and avoid rigid deformation.

[0074] like Figures 1 to 6 As shown, this embodiment also provides a shock absorber, including a cylinder 2 and a piston assembly 3 disposed on the cylinder 2. The piston assembly 3 includes a piston rod 31 and a piston body 32. The piston rod 31 is movably disposed on the cylinder 2, and the piston body 32 is sleeved on the piston rod 31 and abuts against the inner wall of the cylinder 2 to divide the cylinder 2 into an upper cylinder 21 and a lower cylinder 22.

[0075] The piston rod 31 is provided with an adaptive regulating valve 1 as described in any of the above embodiments at one end of the lower cylinder 22. The piston rod 31 is provided with a fifth channel 311, one end of which is connected to the upper cylinder 21 and the other end is connected to the first channel 123 of the adaptive regulating valve 1.

[0076] The shock absorber provided in this embodiment is equipped with an adaptive adjustment valve 1, which has a bidirectional independent adjustment function and can independently control the damping force of the compression and rebound strokes to achieve precise matching for different working conditions.

[0077] Note that the above description is merely a preferred embodiment and the technical principles employed in this application. Those skilled in the art will understand that this application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of this application, and the scope of this application is determined by the scope of the appended claims.

[0078] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An adaptive regulating valve, characterized in that, include: The valve seat has a first receiving cavity; A valve body is disposed on the valve seat, the valve body having a second receiving cavity, and the valve body having a first channel and a second channel, the second receiving cavity being connected to the first channel and the second channel respectively; A valve core is located in the first receiving cavity and the second receiving cavity. The valve core includes a mandrel and a first valve plate and a second valve plate disposed on the mandrel. Wherein, the first valve plate is located in the second accommodating cavity and blocks the first channel, and the first valve plate is used to deform under the action of the oil pressure in the first channel so that the first channel, the second accommodating cavity and the second channel form a first oil passage path; The second valve plate is located in the first receiving cavity and blocks the second receiving cavity. The mandrel is provided with a third channel. The two ends of the third channel are respectively connected to the first receiving cavity and the first channel. The second valve plate is used to deform under the action of the oil pressure in the second channel so that the second channel, the second receiving cavity, the first receiving cavity, the third channel and the first channel form a second oil passage.

2. The adaptive regulating valve according to claim 1, characterized in that, The third channel has an oil inlet and an oil outlet. The oil inlet is connected to the first receiving cavity, and the oil outlet is connected to the first channel. The diameter of the oil inlet is larger than the diameter of the oil outlet.

3. The adaptive regulating valve according to claim 2, characterized in that, The third channel includes an oil inlet section and an oil outlet section. The oil inlet section is connected to the first accommodating cavity through the oil inlet end, and the oil outlet section is connected to the first channel through the oil outlet end. The diameter of the oil inlet section is larger than the diameter of the oil outlet section. Alternatively, the diameter of the third channel gradually decreases along the direction from the oil inlet to the oil outlet.

4. The adaptive regulating valve according to claim 1, characterized in that, The adaptive regulating valve further includes a first limiting member, which is located in the first receiving cavity and divides the first receiving cavity into a first receiving cavity one and a first receiving cavity two. The first limiting member is provided with an oil passage hole, and the first receiving cavity one and the first receiving cavity two are connected through the oil passage hole. The second valve plate is located in the first receiving cavity one, the spindle is engaged with the first limiting member, and a portion of the spindle passes through the first limiting member and extends into the first receiving cavity two, so that the third channel communicates with the first receiving cavity two.

5. The adaptive regulating valve according to claim 4, characterized in that, The first limiting member is equipped with an elastic element, which is located between the bottom wall of the valve seat and the first limiting member. The elastic element has a hollow structure, and the first receiving cavity is formed between the elastic element, the bottom wall of the valve seat, and the first limiting member.

6. The adaptive regulating valve according to claim 5, characterized in that, The adaptive regulating valve further includes a second limiting member, which is located between the elastic member and the bottom wall of the valve seat. The bottom wall of the valve seat is provided with a fourth channel communicating with the outside. The second limiting member is used to drive the elastic member, the first limiting member and the mandrel to move in the direction of blocking the first channel under the action of the oil pressure in the fourth channel.

7. The adaptive regulating valve according to claim 1, characterized in that, The adaptive regulating valve further includes a flow guide, one side of which contacts the valve body, and the other side of which contacts the valve seat and the second valve plate; the flow guide is provided with a notch to form a gap between the second valve plate and the valve body, and the first receiving cavity and the second receiving cavity are connected through the notch.

8. The adaptive regulating valve according to claim 1, characterized in that, The first valve plate and the second valve plate are separated, and the distance between the first valve plate and the second valve plate is between 0.1mm and 5mm.

9. The adaptive regulating valve according to claim 1, characterized in that, The first valve plate includes a first valve plate one, a first valve plate two, and a first valve plate three arranged sequentially. The outer diameter of the first valve plate two is smaller than the outer diameter of the first valve plate one, and the outer diameter of the first valve plate two is smaller than the outer diameter of the first valve plate three.

10. A shock absorber, characterized in that, The system includes a cylinder body and a piston assembly disposed on the cylinder body. The piston assembly includes a piston rod and a piston body. The piston rod is movably disposed on the cylinder body. The piston body is sleeved on the piston rod and abuts against the inner wall of the cylinder body to divide the cylinder body into an upper cylinder body and a lower cylinder body. The piston rod is provided with an adaptive regulating valve as described in any one of claims 1-9 at one end of the lower cylinder. The piston rod is provided with a fifth channel, one end of which is connected to the upper cylinder and the other end of which is connected to the first channel of the adaptive regulating valve.

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