Control valve, suspension system and vehicle
By designing a structure that generates resistance when the first top push surface comes into contact with the liquid on the valve core of the control valve, the problem of high noise during the use of the solenoid valve is solved, the effect of reducing noise is achieved, and the NVH performance of the whole vehicle is improved.
Patent Information
- Application Number
- CN202311661052.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-04
- Publication Date
- 2025-06-06
AI Technical Summary
The solenoid valve will produce a lot of noise during use, affecting the NVH performance of the entire vehicle.
A control valve is designed, and the valve core has a first guide surface, a first side surface and a first overhanging surface. When the first overhanging surface comes into contact with the liquid in the receiving cavity, it generates resistance opposite to the direction of movement of the valve core, provides motion damping, and reduces noise when the valve core collides with the structure.
By providing motion damping, the valve core is slower when moving, reducing noise when colliding with the structure, and improving the NVH performance of the entire vehicle.
Smart Images
Figure CN120100954A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of valves, and in particular, to a control valve, a suspension system and a vehicle. Background Art
[0002] The solenoid valve is usually provided with a channel connected to the fluid channel and a moving iron core. The moving iron core moves to control the opening and closing of the channel connected to the fluid channel, so as to realize the conduction and cutoff of the fluid and adjust the flow direction of the fluid. In the related art, when the moving iron core moves, the moving iron core often generates a large noise when it contacts the structure in the solenoid valve due to the excessively fast moving speed, which affects the NVH performance of the whole vehicle. Summary of the invention
[0003] The purpose of the present disclosure is to provide a control valve, a suspension system and a vehicle to solve the problem in the related art that the solenoid valve generates relatively large noise during use.
[0004] A first object of the present disclosure is to provide a control valve, comprising:
[0005] A valve body assembly, wherein a receiving cavity is formed in the valve body assembly, the valve body assembly has a first channel and a second channel, and the first channel is communicated with the receiving cavity;
[0006] a valve core, movably disposed in the accommodating chamber along a first direction to open or disconnect the communication between the second channel and the accommodating chamber;
[0007] The valve core has a first guide surface, a first side surface, and a first push surface connected between the first guide surface and the first side surface. In the second direction, the minimum distance between the first side surface and the valve body assembly is greater than the minimum distance between the first guide surface and the valve body assembly, wherein the first direction is orthogonal to the second direction.
[0008] Optionally, the first side surface is closer to the second channel than the first guide surface.
[0009] Optionally, the first pushing surface is arranged to be inclined with respect to the second direction.
[0010] Optionally, the first guide surface extends to an end surface of the valve core away from the second channel.
[0011] Optionally, the valve core includes a first section and a second section connected in sequence along the first direction, the first push surface is arranged on the first section, the second section is closer to the second channel than the first section, and in the second direction, the size of the second section is smaller than the size of the first section, so that a second push surface is formed between the first section and the second section, and the second push surface is used to provide motion damping when the valve core moves toward the second channel.
[0012] Optionally, the outer wall of the second section is provided with a guide portion capable of cooperating with a guide of the valve body assembly, and the surface of the guide portion facing the second channel is formed as a third push surface, and the third push surface is used to provide motion damping when the valve core moves toward the second channel.
[0013] Optionally, a surface of the guide portion away from the second channel is formed as a fourth push surface, and the fourth push surface is used to provide motion damping when the valve core moves away from the second channel.
[0014] Optionally, an oil passing groove is provided on the valve core and penetrates the first guide surface along the first direction, and the oil passing groove extends to an end surface of the valve core away from the second channel.
[0015] Optionally, the control valve includes a stationary iron core at least partially accommodated in the accommodating cavity, and the stationary iron core is used to drive the valve core to move.
[0016] Optionally, an elastic member is provided between the valve core and the static iron core, and the elastic member has an elastic force for driving the valve core to move in a direction toward the second channel.
[0017] Optionally, at least one of the valve core and the static iron core is provided with a receiving groove for accommodating the elastic member, and the receiving groove is configured to limit the radial displacement of the elastic member.
[0018] Optionally, the valve body assembly includes a valve body, a valve seat and a core cover, the valve body is connected to the core cover and the core cover is respectively constructed in a cylindrical shape to form the accommodating cavity, the valve seat is arranged in the valve body, the first channel is arranged on the valve body, and the second channel is arranged on the valve seat.
[0019] Optionally, a step structure for connecting with the core cover is provided on the valve body, the core cover is partially sleeved outside the valve body and an end surface of the core cover facing the valve seat abuts against a step surface of the step structure.
[0020] Optionally, a valve needle is provided at one end of the valve core facing the second channel, and the valve needle is used to abut against the second channel.
[0021] A second object of the present disclosure is to provide a suspension system, comprising the control valve described in any one of the above.
[0022] A third object of the present disclosure is to provide a vehicle comprising the above-mentioned suspension system.
[0023] Through the above technical solution, when the valve core moves along the first direction, the first push surface can contact the liquid in the accommodating chamber, and when the first push surface contacts the liquid in the accommodating chamber, it can generate resistance in the opposite direction of the movement of the valve core to provide damping for the movement of the valve core, so that the noise generated when the valve core collides with the structure in the control valve, such as the valve body assembly, is smaller. Specifically, in some embodiments, when the valve core moves toward the second channel along the first direction to close the second channel, the first push surface will contact the liquid in the accommodating chamber and generate resistance in the first direction away from the second channel, so that the valve core can move toward the second channel at a relatively slow speed until it collides with the valve body assembly and stops, thereby reducing the noise generated by the collision between the valve core and the valve body assembly; in other embodiments, when the valve core moves away from the second channel along the first direction to open the second channel, the first push surface will contact the liquid in the accommodating chamber and generate resistance in the first direction toward the second channel, so that the valve core can move away from the second channel at a relatively slow speed until it collides with the valve body assembly and stops, thereby reducing the noise generated by the collision between the valve core and the valve body assembly.
[0024] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:
[0026] Figure 1 is a schematic structural diagram of a control valve in a closed state provided by an exemplary embodiment of the present disclosure;
[0027] Figure 2 is a schematic structural diagram of a control valve in an open state provided by an exemplary embodiment of the present disclosure;
[0028] Figure 3 is a schematic structural diagram of a valve core provided in an exemplary embodiment of the present disclosure in an embodiment;
[0029] Figure 4 It is a schematic structural diagram of a valve core provided in an exemplary embodiment of the present disclosure under another embodiment.
[0030] Description of Reference Numerals
[0031] 1-valve body assembly, 11-accommodating chamber, 12-first channel, 13-second channel, 14-valve body, 141-step structure, 15-valve seat, 16-core cover, 2-valve core, 21-first guide surface, 22-first side surface, 23-first push surface, 24-first section, 25-second section, 26-second push surface, 27-guide part, 28-third push surface, 29-fourth push surface, 3-oil groove, 4-static iron core, 5-elastic member, 6-accommodating groove, 7-valve needle. DETAILED DESCRIPTION
[0032] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.
[0033] In the present disclosure, unless otherwise stated, directional words such as "upper" and "lower" generally refer to the directional positions of the relevant components in actual use. Figure 1 The “inside” and “outside” refer to the inside and outside of the corresponding component outline. In addition, when the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The terms “first”, “second”, etc. used in this disclosure are to distinguish one element from another element and have no order or importance.
[0034] like Figures 1 to 4 As shown, the present disclosure provides a control valve, which includes a valve body assembly 1 and a valve core 2. An accommodating cavity 11 is formed in the valve body assembly 1, and the valve body assembly 1 has a first channel 12 and a second channel 13, and the first channel 12 is connected to the accommodating cavity 11. The valve core 2 is movably arranged in the accommodating cavity 11 along a first direction to open or disconnect the communication between the second channel 13 and the accommodating cavity 11, and the valve core 2 has a first guide surface 21, a first side surface 22, and a first push surface 23 connected between the first guide surface 21 and the first side surface 22. In the second direction, the minimum distance between the first side surface 22 and the valve body assembly 1 is greater than the minimum distance between the first guide surface 21 and the valve body assembly 1, wherein the first direction is orthogonal to the second direction.
[0035] The first direction here refers to the movement direction of the valve core 2. Figure 1 and Figure 2 For example, at this time, the accommodating cavity 11 is along Figure 1 The movement direction of the valve core 2 is Figure 1 The second direction is orthogonal to the first direction. Figure 1 The left and right direction of the drawing direction.
[0036] Through the above technical solution, when the valve core 2 moves along the first direction, the first push surface 23 can contact the liquid in the accommodating chamber 11. When the first push surface 23 contacts the liquid in the accommodating chamber 11, it can generate resistance in the opposite direction of the movement of the valve core 2 to provide damping for the movement of the valve core 2, so that the noise generated when the valve core 2 collides with the structure in the control valve, such as the valve body assembly 1, is smaller. Specifically, in some embodiments, when the valve core 2 moves along the first direction toward the second channel 13 to close the second channel 13, the first push surface 23 will contact the liquid in the accommodating chamber 11 and generate resistance along the first direction away from the second channel 13, so that the valve core 2 can move toward the second channel 13 at a relatively slow speed until it collides with the valve body assembly 1 and stops, thereby reducing the noise generated by the collision between the valve core 2 and the valve body assembly 1; in other embodiments, when the valve core 2 moves along the first direction away from the second channel 13 to open the second channel 13, the first push surface 23 will contact the liquid in the accommodating chamber 11 and generate resistance along the first direction toward the second channel 13, thereby allowing the valve core 2 to move away from the second channel 13 at a relatively slow speed until it collides with the valve body assembly 1 and stops, thereby reducing the noise generated by the collision between the valve core 2 and the valve body assembly 1.
[0037] As described above, the first push surface 23 contacts the liquid in the accommodating chamber 11 and generates resistance in the first direction away from or toward the second channel 13. In some embodiments, the first side surface 22 may be closer to the second channel 13 than the first guide surface 21. For details, see Figure 1 and Figure 2 , at this time, the first pushing surface 23 faces the second channel 13, and when the first pushing surface 23 contacts the liquid in the accommodating chamber 11, resistance will be generated in the first direction away from the second channel 13. In other embodiments, the first guide surface 21 may be closer to the second channel 13 than the first side surface 22, and at this time, the first pushing surface 23 faces away from the second channel 13, and when the first pushing surface 23 contacts the liquid in the accommodating chamber 11, resistance will be generated in the first direction toward the second channel 13.
[0038] The first push surface 23 can be arranged obliquely to the second direction. In this way, when the first push surface 23 contacts the liquid in the accommodating chamber 11, it is possible to avoid excessive motion damping. The liquid in the accommodating chamber 11 needs to flow in the accommodating chamber 11. After the first push surface 23 is arranged obliquely to the second direction, the first push surface 23 is an inclined surface. In this way, when the first push surface 23 moves and contacts the liquid in the accommodating chamber 11, the inclined surface can guide the liquid in the accommodating chamber 11, so as to facilitate the liquid to flow in the accommodating chamber 11, and avoid the motion damping provided by the first push surface 23 being too large and affecting the response speed of the control valve itself.
[0039] The first guide surface 21 can cooperate with the cavity wall of the accommodating cavity 11 to ensure the stability of the valve core 2 when it moves along the first direction and the accuracy of the movement direction of the valve core 2. The first guide surface 21 can extend to the end surface of the valve core 2 away from the second channel 13, so that the first guide surface 21 can have a sufficient area to ensure the use effect of the first guide surface 21.
[0040] like Figure 3 and Figure 4 As shown, the valve core 2 may include a first section 24 and a second section 25 connected in sequence along a first direction, the first push surface 23 is arranged on the first section 24, the second section 25 is closer to the second channel 13 than the first section 24, and in the second direction, the size of the second section 25 is smaller than that of the first section 24, so that a second push surface 26 is formed between the first section 24 and the second section 25, and the second push surface 26 is used to provide motion damping when the valve core 2 moves toward the second channel 13. Figure 1 and Figure 2 , at this time, the second push surface 26 faces the second channel 13, and when the second push surface 26 contacts the liquid in the accommodating chamber 11, resistance will be generated in the first direction away from the second channel 13, further reducing the noise generated when the valve core 2 collides with the valve body assembly 1. Taking the valve core 2 as a columnar structure as an example, at this time, the size of the first section 24 in the second direction refers to the radial size of the first section 24, and the size of the second section 25 in the second direction refers to the radial size of the second section 25.
[0041] The outer wall of the second section 25 may be provided with a guide portion 27 capable of cooperating with the guide of the valve body assembly 1, and the surface of the guide portion 27 facing the second channel 13 is formed as a third push surface 28, and the third push surface 28 is used to provide motion damping when the valve core 2 moves toward the second channel 13. Figure 1 and Figure 2 At this time, the third push surface 28 is away from the second channel 13. When the third push surface 28 contacts the liquid in the accommodating chamber 11, it will generate resistance along the first direction toward the second channel 13, so that the valve core 2 can move toward the second channel 13 at a relatively slow speed until it collides with the valve body assembly 1 and stops, further reducing the noise generated when the valve core 2 collides with the valve body assembly 1. Figure 1 and Figure 2 The guide portion 27 can be arranged on the outer wall of the second section 25, and the first guide surface 21 can be arranged in the first section 24 and can extend to the end surface of the valve core 2 away from the second channel 13. In this way, when the valve core 2 is long, the first guide surface 21 and the guide portion 27 can respectively guide the valve core 2 at both ends of the valve core 2 to ensure the stability of the valve core 2 during movement.
[0042] The surface of the guide portion 27 away from the second passage 13 may be formed as a fourth push surface 29, and the fourth push surface 29 is used to provide motion damping when the valve core 2 moves away from the second passage 13. Figure 1 and Figure 2 At this time, the fourth push surface 29 is away from the second channel 13. When the fourth push surface 29 contacts the liquid in the accommodating chamber 11, it will generate resistance along the first direction toward the second channel 13, so that the valve core 2 can move away from the second channel 13 at a relatively slow speed until it collides with the valve body assembly 1 and stops, further reducing the noise generated when the valve core 2 collides with the valve body assembly 1.
[0043] In the present disclosure, the arrangement positions and numbers of the first push surface 23, the second push surface 26, the third push surface 28 and the fourth push surface 29 are not limited. When the response time of the control valve is not affected and the valve core 2 is configured as a column, the first push surface 23, the second push surface 26, the third push surface 28 and the fourth push surface 29 can be evenly arranged along the axial direction and the circumferential direction of the valve core 2. Such even arrangement can make the force on the valve core 2 more uniform when moving, so that the valve core 2 can move stably even when subjected to resistance. In addition, the first push surface 23, the second push surface 26, the third push surface 28 and the fourth push surface 29 can be adaptively designed according to the needs to reduce the noise of the control valve, so as to avoid the first push surface 23, the second push surface 26, the third push surface 28 and the fourth push surface 29 providing excessive motion damping and affecting the response speed of the control valve itself.
[0044] The valve core 2 is provided with an oil-passing groove 3 penetrating the first guide surface 21 along the first direction, and the oil-passing groove 3 extends to the end face of the valve core 2 away from the second channel 13. When the valve core 2 moves along the first direction, the liquid in the accommodating chamber 11 will flow along with the movement of the valve core 2. Specifically, when the valve core 2 moves away from the second channel 13 along the first direction to open the second channel 13, the liquid at one end of the valve core 2 away from the second channel 13 will flow to the end of the valve core 2 facing the second channel 13 through the gap between the valve core 2 and the cavity wall of the accommodating chamber 11 along with the movement of the valve core 2; when the valve core 2 moves toward the second channel 13 along the first direction to close the second channel 13, the liquid at one end of the valve core 2 facing the second channel 13 will flow to the end of the valve core 2 away from the second channel 13 through the gap between the valve core 2 and the cavity wall of the accommodating chamber 11 along with the movement of the valve core 2. By passing the oil groove 3 through the first guide surface 21 in the first direction, the flow path of the liquid between the valve core 2 and the cavity wall of the accommodating cavity 11 is increased, thereby ensuring the flow speed of the liquid in the accommodating cavity 11 and preventing the flow speed of the liquid in the accommodating cavity 11 from affecting the corresponding speed of the control valve.
[0045] The control valve may include a static iron core 4 at least partially accommodated in the accommodating chamber 11, and the static iron core 4 is used to drive the valve core 2 to move. The static iron core 4 can drive the valve core 2 to move through an energized coil, so that the control valve can be an electromagnetic valve. Specifically, the outer periphery of the static iron core 4 can also be sleeved with an energized coil. When the coil on the outer periphery of the static iron core 4 is energized, the magnetic field generated by the current will magnetize the static iron core 4, so that the static iron core 4 generates magnetism. The magnetized static iron core 4 can attract the valve core 2, thereby driving the valve core 2 to move.
[0046] An elastic member 5 may be provided between the valve core 2 and the static iron core 4, and the elastic member 5 has an elastic force that drives the valve core 2 to move in the direction of the second channel 13. Specifically, when the static iron core 4 is not energized, under the action of the elastic force of the elastic member 5, the valve core 2 may be pressed against the second channel 13 to disconnect the connection between the second channel 13 and the accommodating chamber 11, and maintain the closed state of the second channel 13 under the action of the elastic force, and the solenoid valve is a normally closed solenoid valve at this time. After the coil on the periphery of the static iron core 4 is energized, the attractive force generated by the static iron core 4 can overcome the elastic force of the elastic member 5, so that the valve core 2 moves in the direction away from the second channel 13 to open the second channel 13. In some other embodiments, the elastic member 5 may not be provided, and the movement of the valve core 2 may be achieved by changing the energization direction of the coil on the periphery of the static iron core 4.
[0047] At least one of the valve core 2 and the static iron core 4 is provided with a receiving groove 6 for receiving the elastic member 5, and the receiving groove 6 is configured to limit the radial displacement of the elastic member 5. Figure 4 The accommodating groove 6 can be opened on the end face of the valve core 2 facing the static iron core 4 and arranged in the center, so that the force on the valve core 2 can be more uniform and the stability of the valve core 2 when moving can be ensured.
[0048] In some embodiments, the valve body assembly 1 includes a valve body 14, a valve seat 15 and a core cover 16, the valve body 14 is connected to the core cover 16 and the core cover 16 is respectively configured as a cylinder to form a receiving cavity 11, the valve seat 15 is disposed in the valve body 14, the first channel 12 is disposed on the valve body 14, and the second channel 13 is disposed on the valve seat 15. Figure 1 and Figure 2 As shown, when the control valve drives the valve core 2 through the static iron core 4, the static iron core 4 can be partially accommodated in the accommodating cavity 11 and fixedly connected to the iron core cover 16. When the valve core 2 moves, the first guide surface 21 of the valve core 2 can cooperate with the inner wall guide of the iron core cover 16 to ensure that the valve core 2 can move in the first direction. On the valve body 14, a plurality of first channels 12 can be provided, so that when the second channel 13 is opened, the second channel 13 can be connected to a plurality of first channels 12 at the same time.
[0049] like Figure 1 and Figure 2As shown, the valve body 14 may also be provided with a step structure 141 for connecting with the core cover 16, and the core cover 16 is partially sleeved outside the valve body 14, and the end surface of the core cover 16 facing the valve seat 15 abuts against the step surface of the step structure 141. In this way, the core cover 16 can be partially sleeved outside the valve body 14, increasing the contact area between the core cover 16 and the valve body 14, ensuring the connection strength between the core cover 16 and the valve body 14, and at the same time, the end surface of the core cover 16 facing the valve body 14 can abut against the step surface of the step structure 141 to ensure the installation position of the core cover 16.
[0050] The end of the valve core 2 facing the second channel 13 may be provided with a valve needle 7, and the valve needle 7 is used to abut the second channel 13. The valve needle 7 can be used to better close the second channel 13, and the valve needle 7 can be configured to be suitable for closing the second channel 13. Figure 1 and Figure 2 In the embodiment, the valve needle 7 is constructed to be spherical. In this case, the second channel 13 can also be designed to be adaptive according to the shape of the valve needle 7. For example, the portion of the second channel 13 that contacts the valve needle 7 can be constructed to be able to fit the spherical valve needle 7 in an arc shape, thereby ensuring the effect of closing the second channel 13.
[0051] According to a second aspect of the present disclosure, there is also provided a suspension system, comprising a control valve according to any one of the above embodiments and having all the beneficial effects thereof, which will not be described in detail herein.
[0052] According to a third aspect of the present disclosure, there is also provided a vehicle, comprising the above-mentioned suspension system and having all its beneficial effects, which will not be described in detail here.
[0053] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.
[0054] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.
[0055] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.
Claims
1. A control valve, It is characterized in that include: A valve body assembly, wherein a receiving cavity is formed in the valve body assembly, the valve body assembly has a first channel and a second channel, and the first channel is communicated with the receiving cavity; a valve core, movably disposed in the accommodating chamber along a first direction to open or disconnect the communication between the second channel and the accommodating chamber; The valve core has a first guide surface, a first side surface, and a first push surface connected between the first guide surface and the first side surface. In the second direction, the minimum distance between the first side surface and the valve body assembly is greater than the minimum distance between the first guide surface and the valve body assembly, wherein the first direction is orthogonal to the second direction.
2. The control valve according to claim 1, It is characterized in that The first side surface is closer to the second channel than the first guide surface.
3. The control valve according to claim 1, It is characterized in that The first pushing surface is arranged to be inclined with respect to the second direction.
4. The control valve according to claim 1, It is characterized in that The first guide surface extends to an end surface of the valve core away from the second passage.
5. The control valve according to claim 1, It is characterized in that The valve core includes a first section and a second section connected in sequence along the first direction, the first push surface is arranged on the first section, the second section is closer to the second channel than the first section, and in the second direction, the size of the second section is smaller than the size of the first section, so that a second push surface is formed between the first section and the second section, and the second push surface is used to provide motion damping when the valve core moves toward the second channel.
6. The control valve according to claim 5, It is characterized in that The outer wall of the second section is provided with a guide portion capable of cooperating with the guide of the valve body assembly, and the surface of the guide portion facing the second channel is formed as a third push surface, and the third push surface is used to provide motion damping when the valve core moves toward the second channel.
7. The control valve according to claim 6, It is characterized in that A surface of the guide portion away from the second passage is formed as a fourth pushing surface, and the fourth pushing surface is used to provide motion damping when the valve core moves away from the second passage.
8. The control valve according to claim 1, It is characterized in that The valve core is provided with an oil passage groove penetrating the first guide surface along the first direction, and the oil passage groove extends to an end surface of the valve core away from the second channel.
9. The control valve according to claim 1, It is characterized in that The control valve comprises a static iron core at least partially accommodated in the accommodating cavity, and the static iron core is used for driving the valve core to move.
10. The control valve according to claim 9, It is characterized in that An elastic member is arranged between the valve core and the static iron core, and the elastic member has an elastic force for driving the valve core to move toward the second channel.
11. The control valve according to claim 10, It is characterized in that At least one of the valve core and the static iron core is provided with a receiving groove for receiving the elastic member, and the receiving groove is configured to limit the radial displacement of the elastic member.
12. The control valve according to claim 1, It is characterized in that The valve body assembly includes a valve body, a valve seat and a core cover, the valve body is connected to the core cover and the core covers are respectively constructed in a cylindrical shape to form the accommodating cavity, the valve seat is arranged in the valve body, the first channel is arranged on the valve body, and the second channel is arranged on the valve seat.
13. The control valve according to claim 12, It is characterized in that The valve body is provided with a step structure for connecting with the core cover. The core cover is partially sleeved outside the valve body and an end surface of the core cover facing the valve seat abuts against a step surface of the step structure.
14. The control valve according to claim 1, It is characterized in that A valve needle is disposed at one end of the valve core facing the second channel, and the valve needle is used to abut against the second channel.
15. A suspension system, It is characterized in that A control valve comprising any one of claims 1-14.
16. A vehicle, It is characterized in that Comprising the suspension system as claimed in claim 15.