Damping control valve

Abstract

The utility model relates to a damping control valve. The damping control valve includes a valve housing, an action member, a main valve, and a motion transmission member. The valve housing comprises an end portion and a side portion, the end portion is provided with a first port, and the side portion is provided with a second port. And the action part is arranged in the valve shell and moves along the central axis of the damping control valve under the action of a magnetic field. A main valve moves within the valve housing and along a central axis to regulate a flow rate of a medium flowing between the first port and the second port. The motion transmission part is arranged between the action part and the main valve, and when the action part moves along the central axis, the motion transmission part transmits the motion of the action part to the main valve. The motion transmission member includes: a holder in a space between the operating member and the main valve; the elastic element is arranged on the first side of the retainer, and when the action part moves, the elastic element transmits the movement of the action part to the retainer; and the pilot valve body is arranged on the second side of the retainer and transmits the movement of the retainer to the main valve.

Description

TECHNICAL FIELD

[0001] The exemplary embodiments of the present disclosure generally relate to the technical field of valves, and in particular, to a damping control valve applied to a damping structure of a vehicle. BACKGROUND

[0002] With the popularity of vehicles in daily life, people have higher and higher requirements for the comfort of vehicles. The damping characteristics of vehicles are an important factor in comfort. Vehicles achieve damping effects through shock absorbers installed between the frame and the axle. The vehicle shock absorber can be used to reduce the impact of the vehicle from the road, and to suppress the oscillation when the spring is absorbed and rebounded, so that the vehicle quickly returns to the normal driving state, thereby playing the role of anti-vibration and damping. The vehicle shock absorber is adapted with a damping control valve, which is a key component for achieving anti-vibration and damping effect in the vehicle suspension system. Through the damping adjustment characteristics of the damping control valve, when the vehicle is impacted by different road conditions and vehicle speeds, most of the energy is damped by the shock absorber.

[0003] However, some existing damping control valves cannot achieve flexible and diverse damping adjustment functions, and cannot meet the actual working requirements. Therefore, there is an urgent need for a damping control valve that can achieve flexible damping adjustment characteristics to meet the growing demand. CONTENT OF THE INVENTION

[0004] At least to overcome the problems existing in the prior art damping control valve and / or other potential problems, the exemplary embodiments of the present disclosure propose a damping control valve.

[0005] An embodiment of the present disclosure provides a damping control valve. The damping control valve comprises: a valve housing comprising an end portion and a side portion, the end portion being provided with a first port, and the side portion being provided with a second port; an action component disposed in the valve housing and capable of moving along a central axis of the damping control valve under the action of a magnetic field; a main valve disposed in the valve housing and adapted to move along the central axis to adjust the flow rate of a medium flowing between the first port and the second port; and a motion transmission component disposed between the action component and the main valve and configured to transmit the motion of the action component to the main valve to drive the main valve to move when the action component moves along the central axis, wherein the motion transmission component comprises: a retainer disposed in a space between the action component and the main valve; a resilient element disposed on a first side of the retainer away from the first port and configured to transmit the motion of the action component to the retainer when the action component moves; and a pilot valve body disposed on a second side of the retainer opposite the first side and configured to transmit the motion of the retainer to the main valve.

[0006] According to the embodiments of the present disclosure, the movement of the action component can be transmitted to the main valve through the elastic element, the retainer and the pilot valve body, thereby achieving adjustment of the damping characteristics.

[0007] In some embodiments, the retainer includes: a main body; a first annular protrusion disposed on the first side of the retainer. The first annular protrusion is configured to accommodate at least a portion of the elastic element and includes: a first axial protrusion extending from the main body parallel to the central axis; and a first radial protrusion extending from the first axial protrusion toward the radial center of the damping control valve. This arrangement effectively restricts movement of the elastic element and facilitates installation of the elastic element.

[0008] In some embodiments, the distance between the first radial protrusion of the first annular protrusion and the main body along the central axis is equal to the axial thickness of the elastic element, so as to fix one side of the elastic element to the main body. In this way, the elastic element can be firmly fixed to the main body of the retainer.

[0009] In some embodiments, the distance between the first annular protrusion and the main body along the central axis is greater than the axial thickness of the elastic element, so that the elastic element has axial clearance before being pressed against the main body by the actuating component. In this manner, the movement of the elastic element and the retaining frame can be decoupled, thereby improving the response speed of the damping control.

[0010] In some embodiments, the retainer includes: a main body; a second annular protrusion disposed on the second side of the retainer. The second annular protrusion is configured to accommodate at least a portion of the pilot valve body and includes: a second axial protrusion extending from the main body parallel to the central axis; and a second radial protrusion extending from the second axial protrusion toward the radial center of the damping control valve. This arrangement effectively restricts movement of the pilot valve body, facilitating installation of the pilot valve body.

[0011] In some embodiments, the distance between the second radial projection of the second annular projection and the main body along the central axis is equal to the axial thickness of the pilot valve body, thereby securing one side of the pilot valve body to the main body. In this manner, the pilot valve body can be securely secured to the main body of the retainer.

[0012] In some embodiments, the distance between the second annular protrusion and the main body along the central axis is greater than the axial thickness of the pilot valve body, so that the pilot valve body has axial clearance before being pressed against the main valve by the retainer. In this manner, the movement of the pilot valve body and the retainer can be decoupled, achieving a rapid response of the damping control.

[0013] In some embodiments, the pilot valve body is an elastic valve body, and the elastic valve body includes a central protrusion that projects toward the main valve and a circumferential edge that abuts the retainer. In this manner, the elastic element and the pilot valve body can achieve a more diverse combination of elastic effects, thereby achieving a wider range of damping performance.

[0014] In some embodiments, the pilot valve body is a rigid valve body with a spherical profile, wherein the elastic valve body includes a central protrusion protruding toward the main valve and a circumferential edge that abuts the retainer; and wherein the second side of the retainer has a receiving surface that matches the spherical profile of the rigid valve body. This approach can reduce part processing requirements and effectively control costs.

[0015] In some embodiments, the retainer includes a recess on the first side. The recess is configured to accommodate the elastic element when the elastic element is deformed by the actuating component. The recess includes: a first stepped surface located near the radial outer edge of the retainer; and a second stepped surface located near the radial center of the retainer. The first stepped surface is closer to the second side than the second stepped surface. This approach allows for a greater number of damping segments to be implemented on a single spring element, thereby achieving a wider range of damping control characteristics.

[0016] These and other aspects of the disclosure will become apparent from and will be apparent from the following description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present application and should not be regarded as limiting the scope. A person of ordinary skill in the art can derive other relevant drawings based on these drawings without inventive effort.

[0018] In the attached figure:

[0019] FIG1 shows a cross-sectional view of a damping control valve according to an exemplary embodiment of the present disclosure; and

[0020] Figures 2 to 5 Cross-sectional views of motion transmitting components used in a damping control valve according to different exemplary embodiments of the present disclosure are respectively shown. DETAILED DESCRIPTION

[0021] The principles of the present disclosure will now be described with reference to certain exemplary embodiments. It should be understood that these exemplary embodiments are provided for illustrative purposes only and are intended to aid those skilled in the art in understanding and implementing the present disclosure, and are not intended to limit the scope of the present disclosure in any way. The disclosure described herein may be implemented in various ways, in addition to those described below.

[0022] In the following description and claims, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

[0023] References in this disclosure to "one embodiment," "an embodiment," "an example embodiment," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not every embodiment must include the particular feature, structure, or characteristic. Furthermore, these phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, those skilled in the art will recognize that it is within the knowledge of those skilled in the art to apply such feature, structure, or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0024] It should be understood that although the terms "first," "second," etc., may be used to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of example embodiments. As used herein, the term "and / or" includes any and all combinations of one or more of the listed terms.

[0025] In the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "having," "installed," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0026] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the example embodiments. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the terms "comprise," "include," "have," "includes," and / or "includes," when used herein, indicate the presence of the recited features, elements, and / or components, etc., but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof.

[0027] The embodiments of the present disclosure provide a damping control valve that can be used in conjunction with a damper of a vehicle's vibration reduction structure. By changing the flow rate of the fluid medium flowing through the damping control valve, the pressure of the fluid medium in the damper can be adjusted, thereby changing the damping characteristics of the damper. It should be noted that the damping control valve disclosed in the present utility model can also be used in other components or fluid control systems that require adjustable damping. Figures 1 to 5 The specific structure of the damping control valve according to the embodiment of the present disclosure is described.

[0028] like Figure 1 As shown, the damping control valve 1 includes a valve housing 10. The valve housing 10 includes an end portion 12, and a first port A is provided at the end portion 12. The first port A can be fluidically connected to a chamber of a damper used in conjunction with the damping control valve 1, such as an oil storage chamber. The valve housing 10 also includes a side portion 14, and a second port B is provided at the side portion 14. The second port B can be fluidically connected to a chamber of a damper used in conjunction with the damping control valve 1, such as a working chamber. Based on the different working processes of the damper and the damping control valve, the fluid medium can flow from the first port A to the second port B, or from the second port B to the first port A, and the embodiments of the present disclosure do not limit this.

[0029] Continue to refer Figure 1 The damping control valve 1 further includes a drive component 20 and an operating component 30 disposed within the valve housing 10. The drive component 20 is fixedly disposed within the valve housing 10 and is capable of generating a magnetic field when energized. The operating component 30 is capable of moving along the central axis L of the damping control valve 1 under the influence of the magnetic field of the drive component 20. In some embodiments, the drive component 20 may be an electromagnetic actuator. When energized, the operating component 30 is capable of moving in a direction toward the first port A at the end 12 of the damping control valve 1 under the influence of the electromagnetic force.

[0030] Continue to refer Figure 1 The damping control valve 1 also includes a main valve 40 and a motion transmission component 50 disposed within the valve housing 10. The motion transmission component 50 is positioned between the main valve 40 and the actuating component 30 and is used to transmit the motion of the actuating component 30 to the main valve 40, thereby driving the movement of the main valve 40. A flange 42 is provided at one end of the main valve 40, extending into the flow path between the first port A and the second port B. As the main valve 40 moves along the central axis L of the damping control valve 1, the area where the flange 42 extends into the flow path changes, thereby regulating the flow rate of the medium flowing between the first port A and the second port B.

[0031] Figures 2 to 5 Cross-sectional views of a motion transmitting component 50 used in a damping control valve according to different exemplary embodiments of the present disclosure are respectively shown.

[0032] First reference Figure 2 The motion transmission component 50 includes a retainer 502. The retainer 502 is disposed in the space between the operating component 30 and the main valve 40. The retainer 502 includes a main body 5020 and a protrusion 5021 extending from the main body 5020 toward the operating component 30 of the damping control valve 1. Return to Reference Figure 1 The boss 5021 is inserted into the recess of the action component 30 to position the holder 502 to facilitate the installation of the holder 502.

[0033] Continue to refer Figure 2 The motion transmission component 50 further includes an elastic element 503 and a pilot valve body 501. The elastic element 503 and the pilot valve body 501 are respectively disposed on opposite first and second sides 5021 and 5022 of the retainer 502. The first side 5021 is the side away from the first port A, and the second side 5022 is the side closer to the first port A. As shown in the figure, the elastic element 503 abuts against the operating component 30. Thus, when the operating component 30 moves, the movement of the operating component 30 is transmitted to the main body 5020 of the retainer 502 via the elastic element 503. This movement is then transmitted to the main valve 40 via the main body 5020 of the retainer 502, ultimately changing the area in which the flange 42 of the main valve 40 extends into the flow path, thereby achieving adjustable control of the fluid flow rate.

[0034] refer to Figure 2 The retainer 502 includes a first annular protrusion disposed on a first side 5021 of the retainer 502. The first annular protrusion includes a first axial protrusion 506 and a first radial protrusion 507. The first axial protrusion 506 extends from the main body 5020 parallel to the central axis L, and the first radial protrusion 507 extends from the first axial protrusion 506 toward the radial center of the damping control valve 1. Thus, the first annular protrusion is generally L-shaped, thereby forming a space that can accommodate a portion of the elastic element 503.

[0035] like Figure 2 As shown, the distance between the first radial protrusion 507 of the first annular protrusion and the main body 5020 along the central axis L is equal to the axial thickness of the elastic element 503. In this way, the elastic element 503 can be firmly embedded in the first annular protrusion, so that one side of the elastic element 503 can be fixed to the main body 5020, thereby facilitating the fixing and installation of the elastic element 503.

[0036] Reference below Figure 3 , and Figure 2A major difference between the first annular protrusion and the retaining frame 502 is the height of the first axial protrusion 506 in the first annular protrusion. As shown, the distance between the first annular protrusion and the main body 5020 along the central axis L (i.e., the height of the first axial protrusion 506) is greater than the axial thickness of the elastic element 503. In this way, the elastic element 503 has an axial movement gap G1 before being pressed against the main body 5020 of the retaining frame 502 by the actuating component 30, so that the elastic element 503 and the main body 5020 are disengaged. Therefore, during the initial stage of movement of the actuating component 30 in the direction toward the first port A, it only needs to push the elastic element 503, without pushing the retaining frame 502. Because the mass of the elastic element 503 is much smaller than that of the retaining frame 502, this method can make the initial stage of movement of the actuating component 30 easier, thereby achieving a rapid response of the movement.

[0037] Return Reference Figure 2 The retainer 502 includes a second annular protrusion disposed on a second side 5022 of the retainer 502. The second annular protrusion includes a second axial protrusion 508 and a second radial protrusion 509. The second axial protrusion 508 extends from the main body 5020 parallel to the central axis L, and the second radial protrusion 509 extends from the second axial protrusion 508 toward the radial center of the damping control valve 1. Thus, the second annular protrusion is generally L-shaped, thereby creating a space that can accommodate a portion of the pilot valve body 501.

[0038] like Figure 2 As shown, the distance between the second radial protrusion 509 of the second annular protrusion and the main body 5020 along the central axis L is equal to the axial thickness of the pilot valve body 501. In this way, the elastic element 503 can be firmly embedded in the second annular protrusion, thereby allowing one side of the pilot valve body 501 to be fixed to the main body 5020, thereby facilitating the fixing and installation of the pilot valve body 501.

[0039] Reference below Figure 3 , and Figure 2 Another major difference lies in the height of the second axial protrusion 508 in the second annular protrusion. As shown, the distance between the second annular protrusion and the main body 5020 along the central axis L (i.e., the height of the second axial protrusion 508) is greater than the axial thickness of the pilot valve body 501. This ensures that the pilot valve body 501 has an axial clearance G2 before being pressed against the main valve 40 by the main body 5020 of the retainer 502, allowing the pilot valve body 501 to be decoupled from the main body 5020. Consequently, when the retainer 502 applies force to the main valve 40, the decoupling of the movement of the pilot valve body 501 from the main body 5020 facilitates movement of the pilot valve body 501, achieving a rapid response.

[0040] like Figure 2 andFigure 3 As shown, the pilot valve body 501 can be a resilient valve body made of a resilient material. As shown, the resilient valve body includes a central protrusion 5011 and a circumferential edge 5012. The central protrusion 5011 protrudes towards the main valve 40 and can abut against the main valve 40, which serves the function of motion transmission. In other words, when the motion transmission component 50 is pressed by the action component 30, the pilot valve body 501 of the motion transmission component 50 is able to transmit motion to the main valve 40. As shown, the circumferential edge 5012 of the resilient pilot valve body 501 is embedded between the second annular protrusion of the cage 502 and the main body 5020, so as to facilitate the installation and positioning of the pilot valve body 501. Figure 2 and Figure 3 As shown, the circumferential edge 5012 of the resilient pilot valve body 501 is embedded between the second annular protrusion of the cage 502 and the main body 5020, so as to facilitate the installation and positioning of the pilot valve body 501.

[0041] According to the above-mentioned embodiments, the pilot valve body 501 has certain resilient characteristics, which, in combination with the resilient element 503, can achieve more diversified combinations of resilient effects, thereby achieving more damping performances to meet the use requirements of different customers under various working conditions.

[0042] Reference is made below to Figure 4 which shows a cross-sectional view of the motion transmission component 50 of the damping control valve 1 according to another embodiment of the present disclosure. In the embodiment as shown, the pilot valve body 501 in the motion transmission component 50 is a rigid valve body having a spherical profile. The rigid valve body includes a central protrusion 5011 and a circumferential edge 5012. The central protrusion 5011 protrudes towards the main valve 40 and can abut against the main valve 40, which serves the function of motion transmission. In other words, when the motion transmission component 50 is pressed by the action component 30, the pilot valve body 501 of the motion transmission component 50 is able to transmit motion to the main valve 40. As shown, the circumferential edge 5012 of the rigid pilot valve body 501 is embedded between the second annular protrusion of the cage 502 and the main body 5020, so as to facilitate the installation and positioning of the pilot valve body 501. Figure 4 As shown, the circumferential edge 5012 of the rigid pilot valve body 501 is embedded between the second annular protrusion of the cage 502 and the main body 5020, so as to facilitate the installation and positioning of the pilot valve body 501. As shown, the second side 5022 of the main body 5020 of the cage 502 has a receiving surface 5026, which also has a spherical profile and matches the spherical profile of the rigid valve body. In this way, the main body 5020 of the cage 502 and the pilot valve body 501 are in spherical contact, and such a contact mode allows a certain degree of machining and installation deviation, that is, even if the pilot valve body 501 has a certain machining and installation error, it will not affect the effective contact with the cage 502. In this way, the machining size requirements of the pilot valve body 501 and the cage 502 can be reduced, thereby reducing the manufacturing cost. Figure 4

[0043] Reference is made below to Figure 5 ​, which shows a cross-sectional view of a motion transmission component 50 of a damping control valve 1 according to another embodiment of the present disclosure. As shown, the retainer 502 is provided with a notch 5025 on the first side 5021. The function of the notch 5025 is to accommodate the deformation of the elastic element 503 when the elastic element 503 is pushed by the action component 30 and deformed. Figure 5 As shown, the recess 5025 includes a first stepped surface 5027 and a second stepped surface 5028. The first stepped surface 5027 is located near the radial outer edge of the retainer 502, while the second stepped surface 5028 is located near the radial center of the retainer 502. Furthermore, a distance D1 between the first stepped surface 5027 and the second side 5022 is less than a distance D2 between the second stepped surface 5028 and the second side 5022. In this manner, when the elastic element 503 is pushed by the actuating component 30, the inner side of the elastic element 503 moves downward toward the first port A, while the outer side of the elastic element 503 is secured by the first annular protrusion. This deformation allows the elastic element 503 to be supported by the inflection point 5029 located on the first stepped surface 5027. Consequently, the elastic element 503 is supported not only by the inflection point 5024 but also by the inflection point 5029, thereby forming multiple support inflection points on the retainer 502 for supporting the elastic element 503. The outer side of elastic element 503 is secured by the first annular protrusion. When compressed, elastic element 503 acts as a cantilever beam. Because the elastic element 503 is supported at different points of action by inflection point 5024 and inflection point 5029, the cantilever beam's moment arm is different. By providing multiple support inflection points, multiple damping segments can be implemented on a single elastic element 503, thereby achieving more flexible and diverse damping adjustment characteristics. It will be appreciated that a greater number of stepped surfaces and corresponding inflection points can also be provided to achieve even more flexible damping adjustment characteristics.

[0044] The damping control valve 1 according to the embodiments of the present disclosure can be used with a vehicle damper. The vehicle damper may also be equipped with a sensor. When the sensor detects a change in the roughness of the road, the damping characteristics of the damper may need to be modified to provide a better ride experience. In this case, the damper controller can send a signal to energize the drive assembly 20. Under the influence of the magnetic field of the drive assembly 20, the actuating component 30 moves, which acts on the main valve 40 via the motion transmission component 50, thereby changing the flow rate of the fluid medium through the damping control valve 1. This allows the fluid medium pressure in the damper to be adjusted, thereby changing the characteristics of the damping control valve 1. It should be understood that the above scenario is only one possible scenario, and other usage scenarios are possible without departing from the embodiments of the present invention.

[0045] While the embodiments of the present invention are described above using a vehicle vibration reduction system as a scenario, it should be understood that the embodiments of the present invention may also be used in other scenarios and systems. It should also be understood that those skilled in the art may devise other feasible embodiments of the damping control valve without departing from the principles of the present disclosure. Such embodiments also fall within the scope of the present invention.

[0046] The specific implementation methods described above further illustrate the objectives, technical solutions, and beneficial effects of the present invention. It should be understood that the above description is merely a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A damping control valve (1), characterized in that: include: A valve housing (10) includes an end portion (12) and a side portion (14), wherein the end portion (12) is provided with a first port (A) and the side portion (14) is provided with a second port (B); an operating component (30) disposed in the valve housing (10) and capable of moving along the central axis (L) of the damping control valve (1) under the action of a magnetic field; a main valve (40) disposed in the valve housing (10) and adapted to move along the central axis (L) to adjust the flow rate of a medium flowing between the first port (A) and the second port (B); as well as A motion transmission component (50) is provided between the action component (30) and the main valve (40), and is configured to transmit the motion of the action component (30) to the main valve (40) when the action component (30) moves along the central axis (L) to drive the main valve (40) to move, wherein the motion transmission component (50) includes: a retainer (502) disposed in a space between the operating component (30) and the main valve (40); an elastic element (503) disposed on a first side (5021) of the holder (502) away from the first port (A) and configured to transmit the movement of the action component (30) to the holder (502) when the action component (30) moves; and The pilot valve body (501) is provided on a second side (5022) of the retainer (502) opposite to the first side (5021) and is configured to transmit movement of the retainer (502) to the main valve (40).

2. The damping control valve (1) according to claim 1, characterized in that The retainer (502) comprises: Subject (5020); a first annular protrusion, provided on the first side (5021) of the retaining frame (502), the first annular protrusion being configured to accommodate at least a portion of the elastic element (503), and comprising: a first axial projection (506) extending from the body (5020) parallel to the central axis (L); and A first radial protrusion (507) extends from the first axial protrusion (506) toward the radial center of the damping control valve (1).

3. The damping control valve (1) according to claim 2, characterized in that The distance between the first radial protrusion (507) of the first annular protrusion and the main body (5020) along the central axis (L) is equal to the axial thickness of the elastic element (503), so as to fix one side of the elastic element (503) on the main body (5020).

4. The damping control valve (1) according to claim 2, characterized in that The distance between the first annular protrusion and the main body (5020) along the central axis (L) is greater than the axial thickness of the elastic element (503), so that the elastic element (503) has an axial movement gap G1 before being pressed against the main body (5020) by the action component (30).

5. The damping control valve (1) according to claim 1, characterized in that The retainer (502) comprises: Subject (5020); a second annular protrusion, provided on the second side (5022) of the retainer (502), the second annular protrusion being configured to accommodate at least a portion of the pilot valve body (501), and comprising: a second axial projection (508) extending from the body (5020) parallel to the central axis (L); and A second radial protrusion (509) extends from the second axial protrusion (508) toward the radial center of the damping control valve (1).

6. The damping control valve (1) according to claim 5, characterized in that The distance between the second radial protrusion (509) of the second annular protrusion and the main body (5020) along the central axis (L) is equal to the axial thickness of the pilot valve body (501), so as to fix one side of the pilot valve body (501) on the main body (5020).

7. The damping control valve (1) according to claim 5, characterized in that The distance between the second annular protrusion and the main body (5020) along the central axis (L) is greater than the axial thickness of the pilot valve body (501), so that the pilot valve body (501) has an axial movement gap G2 before being pressed against the main valve (40) by the retaining frame (502).

8. The damping control valve (1) according to any one of claims 1 to 7, characterized in that: The pilot valve body (501) is an elastic valve body, and the elastic valve body includes a central protrusion (5011) protruding toward the main valve (40) and a circumferential edge (5012) abutting against the retainer (502).

9. The damping control valve (1) according to claim 8, characterized in that The pilot valve body (501) is a rigid valve body with a spherical profile. wherein the elastic valve body comprises a central protrusion (5011) protruding toward the main valve (40) and a peripheral edge (5012) abutting against the retainer (502); and The second side (5022) of the retainer (502) has a receiving surface (5026) that matches the spherical contour of the rigid valve body.

10. The damping control valve (1) according to any one of claims 1 to 7, characterized in that: The retaining frame (502) includes a notch (5025) on the first side (5021), the notch (5025) being configured to accommodate the elastic element (503) when the elastic element (503) is pushed by the action component (30) and deformed, and the notch (5025) includes: a first step surface (5027) close to the radial outer edge of the retainer (502); and The second step surface (5028) is close to the radial center of the retaining frame (502), and the distance between the first step surface (5027) and the second side (5022) is smaller than the distance between the second step surface (5028) and the second side (5022).

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