A drive valve, a damping valve device, a shock absorber, a suspension system and a vehicle

Abstract

The present invention relates to the technical field of shock absorption devices, and particularly relates to a drive valve, a damping valve device, a shock absorber, a suspension system and a vehicle. The first valve body in the drive valve is provided with a first fluid chamber, and the first fluid chamber is configured to be provided with a conductive liquid; the first deformable member is connected to the first valve body, and the first deformable member covers the side of the first fluid chamber facing the overflow valve; the magnetic mechanism is connected to the first valve body, and the magnetic mechanism is configured to drive the energized conductive liquid to move towards or away from the first deformable member, so that the first deformable member deforms to control the action of the overflow valve. The drive valve drives the flow of the conductive liquid through the Lorentz force, and has an instantaneous response speed, so that the drive valve has the advantage of fast response speed; the fast response speed of the drive valve and the movement of the first deformable member towards the first valve body can achieve operations such as rapid pressure relief or pressure increase by applying a reverse force to the valve stem assembly by the first deformable member away from the overflow valve.

Description

Technical Field

[0001] The present invention relates to the technical field of shock absorption devices, and in particular to a drive valve, a damping valve device, a shock absorber, a suspension system and a vehicle. Background Art

[0002] To improve the ride comfort of a vehicle, shock absorbers are usually installed in the suspension system of the vehicle. A damping valve device for adjusting the damping force is provided in the shock absorber.

[0003] In related technologies, the damping valve device can achieve damping adjustment through an electromagnetic valve, that is, by controlling the current flowing through the coil in the electromagnetic valve, the axial force of the magnetic core is controlled, thereby achieving damping adjustment. However, due to the inductance of the coil and the relatively large mass of the magnetic core assembly, the electromagnetic valve has the defect of slow response, resulting in the defect of slow response speed of the damping valve device. Summary of the Invention

[0004] Embodiments of the present invention provide a drive valve, a damping valve device, a shock absorber, a suspension system and a vehicle to solve the technical problem of slow response speed of the damping valve device in the prior art.

[0005] In a first aspect, an embodiment of the present invention provides a drive valve for controlling an overflow valve in a damping valve device. The drive valve includes:

[0006] A first valve body provided with a first fluid chamber configured to hold a conductive liquid;

[0007] A first deformable member connected to the first valve body, the first deformable member covering one side of the first fluid chamber facing the overflow valve;

[0008] A magnetic mechanism connected to the first valve body, the magnetic mechanism being configured to drive the energized conductive liquid to move towards or away from the first deformable member, causing the first deformable member to deform to control the operation of the overflow valve.

[0009] In some embodiments, the magnetic mechanism includes a first magnetic portion and a second magnetic portion arranged opposite to each other, the first magnetic portion and the second magnetic portion having opposite magnetic polarities, and the conductive liquid is provided between the first magnetic portion and the second magnetic portion.

[0010] In some embodiments, the magnetic mechanism includes a first magnetic member and a second magnetic member spaced apart along a first direction. The first magnetic member includes the first magnetic portion, and the second magnetic member includes the second magnetic portion; wherein, the first direction is perpendicular to the deformation direction of the first deformable member.

[0011] In some embodiments, the magnetic mechanism includes at least one of a magnet, an electromagnet, and an energized coil.

[0012] In some embodiments, the drive valve further includes a valve stem assembly, wherein the valve stem assembly is connected to an end of the first deformable member facing away from the first valve body, and the first deformable member is deformed to control the action of the relief valve through the valve stem assembly.

[0013] In some embodiments, the first deformable member is a first bellows.

[0014] In some embodiments, the drive valve further includes a valve stem assembly, one end of the first bellows abuts against the first valve body, and the other end of the first bellows abuts against the valve stem assembly.

[0015] In some embodiments, a limiting groove is provided at the end of the first bellows facing the overflow valve;

[0016] The valve stem assembly is inserted into the limiting groove.

[0017] In some embodiments, the first valve body is further provided with a valve body chamber; the drive valve further comprises:

[0018] a second deformable member, disposed in the valve body chamber, the second deformable member dividing the valve body chamber into the first fluid chamber and a second fluid chamber, the first fluid chamber being located on a side of the second fluid chamber facing the overflow valve;

[0019] When the conductive liquid moves toward the first deformable member, the second deformable member deforms toward the first deformable member; when the conductive liquid moves away from the first deformable member, the second deformable member deforms in a direction away from the first deformable member.

[0020] In some embodiments, the second deformation member includes one of a second bellows and a membrane.

[0021] In some embodiments, the first valve body is provided with a damping hole, one end of the damping hole is communicated with the second fluid chamber, and the other end of the damping hole is communicated with the gap between the driving valve and the overflow valve.

[0022] In some embodiments, the actuated valve further comprises:

[0023] A first conductor and a second conductor are respectively connected to the first valve body and are spaced apart in a second direction, and the conductive liquid is disposed between the first conductor and the second conductor;

[0024] One of the first conductor and the second conductor is configured to be electrically connected to the positive electrode of the power supply member, and the other is configured to be electrically connected to the negative electrode of the power supply member;

[0025] Wherein, the second direction is perpendicular to the deformation direction of the first deformable member.

[0026] In some embodiments, the conductive liquid is one of liquid gallium, mercury liquid, and gallium-based alloy liquid.

[0027] In a second aspect, an embodiment of the present invention further provides a damping valve device, and the damping valve device includes the driving valve as described above.

[0028] In some embodiments, the damping valve device further includes an overflow valve. The overflow valve includes a valve slider provided with a fluid passage and a slider opening communicating with the fluid passage, and the slider opening faces the driving valve. The first deformable member of the driving valve deforms to drive the valve rod assembly to move, and the valve rod assembly opens or blocks the slider opening and controls the movement of the valve slider.

[0029] In a third aspect, an embodiment of the present invention further provides a shock absorber, and the shock absorber includes:

[0030] A cylinder barrel;

[0031] A piston rod movably disposed in the cylinder barrel;

[0032] A damping valve device connected to one end of the piston rod extending into the cylinder barrel, and the damping valve device is the damping valve device as described above.

[0033] In a fourth aspect, an embodiment of the present invention further provides a suspension system, and the suspension system includes the shock absorber as described above.

[0034] In a fifth aspect, an embodiment of the present invention further provides a vehicle, and the vehicle includes a vehicle body and the suspension system as described above, and the vehicle body is connected to the suspension system.

[0035] In view of the prior art, the present invention has the following advantages:

[0036] When the driving valve in the embodiment of the present invention is in use, the Lorentz force is used to drive the flow of the conductive liquid, which has an instantaneous response speed, so that the driving valve has the advantage of fast response speed, and further the damping valve device has the advantage of fast response speed. The fast response speed of the driving valve and the movement of the first deformable member towards the first valve body can achieve operations such as rapid pressure relief or pressure increase by applying a reverse force to the valve rod assembly away from the overflow valve by the first deformable member. Moreover, there is no small-gap contact between rigid bodies in the structure of the driving valve, such as the contact between the guide rod and the bushing, so the occurrence of friction and scraping is avoided in principle, and the stability of the driving valve is improved.

[0037] The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly, it can be implemented according to the content of the specification. And in order to make the above and other objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are specifically exemplified below. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments.

[0039] Figure 1 is a schematic structural diagram of a shock absorber in an embodiment of the present application;

[0040] Figure 2 is Figure 1 a schematic structural diagram of an enlarged view of part M in

[0041] Figure 3 is a schematic diagram of the working principle of a drive valve in an embodiment of the present application Figure 1 ;

[0042] Figure 4 is a schematic diagram of the working principle of a drive valve in an embodiment of the present application Figure 2 ;

[0043] Figure 5 is a schematic diagram of the working principle of a drive valve in an embodiment of the present application Figure 3 。

[0044] Reference numerals:

[0045] 10. Drive valve; 11. First valve body; 111. First fluid chamber; 112. Valve body chamber; 113. Second fluid chamber; 12. First deformable member; 121. Limit groove; 13. Second deformable member; 14. Valve rod assembly; 141. Pilot valve rod; 142. Pilot valve plug; 15. Magnetic mechanism; 151. First magnetic part; 152. Second magnetic part; 16. Damping hole;

[0046] 20. Overflow valve; 21. Valve slider; 211. Slider opening; 22. Overflow valve plate; 23. Overflow valve seat; 24. Elastic member; 25. Fluid passage;

[0047] 31. Second valve body; 32. Third valve body; 33. Fourth valve body;

[0048] 40. Piston valve;

[0049] 50. Shock absorber; 51. Cylinder barrel; 55. Compression chamber; 56. Rebound chamber; 57. Piston rod; 58. Mounting cylinder;

[0050] X. First direction; Y. Second direction; Z. Third direction. Detailed Embodiments

[0051] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention can be more thoroughly understood and the scope of the present invention can be fully conveyed to those skilled in the art.

[0052] Refer to Figures 1 to 5 As shown, an actuating valve 10 for a damping valve device provided in an embodiment of the present application has the advantages of fast response speed and high stability.

[0053] The actuating valve provided in the embodiment of the present application, as well as the damping valve device, shock absorber, suspension system, and vehicle, will be described in detail below with reference to the accompanying drawings through specific embodiments and their application scenarios.

[0054] In some embodiments, the actuating valve 10 for the damping valve device is spaced apart from the overflow valve 20 in the damping valve device, and the actuating valve 10 is used to control the operation of the overflow valve 20. The actuating valve 10 includes a first valve body 11, a first deformable member 12, and a magnetic mechanism 15; the first valve body 11 is provided with a first fluid chamber 111, and the first fluid chamber 111 is configured to be provided with a conductive liquid; the first deformable member 12 is connected to the first valve body 11, and the first deformable member 12 covers the side of the first fluid chamber 111 facing the overflow valve 20; the magnetic mechanism 15 is connected to the first valve body 11, and the magnetic mechanism 15 is configured to drive the energized conductive liquid to move toward or away from the first deformable member 12, so that the first deformable member 12 deforms to control the operation of the overflow valve 20.

[0055] In the embodiment of the present application, when the actuating valve 10 is in use, a conductive liquid electrically connected to a power supply member is provided in the first fluid chamber 111. After the conductive liquid is energized, the conductive liquid will be affected by the Lorentz force in the magnetic field of the magnetic mechanism 15 and move toward or away from the first deformable member 12, so that the first deformable member 12 deforms. That is, when the conductive liquid moves toward the first deformable member 12, the first deformable member 12 deforms in a direction away from the first valve body 11; when the conductive liquid moves away from the first deformable member 12, the first deformable member 12 moves toward the first valve body 11. The deformation of the first deformable member 12 realizes the control of the operation of the overflow valve 20.

[0056] Among them, the Lorentz force is the force exerted by a magnetic field on a moving charge. The moving charge is generated by an electric field. The direction of the Lorentz force is perpendicular to the directions of the electric field and the magnetic field and has an instantaneous response speed, which is faster than the response speed of the electromagnetic force generated based on a coil magnetic core. This makes the driving valve 10 have the advantage of a fast response speed, and further makes the damping valve device have the advantage of a fast response speed. The fast response speed of the driving valve 10 and the movement of the first deformable member 12 towards the first valve body 11 can achieve operations such as rapid pressure relief or pressurization by the first deformable member 12 applying a reverse force to the valve stem assembly 14 away from the overflow valve 20. Moreover, there is no small-gap contact between rigid bodies in the structure of the driving valve 10, such as the contact between a guide rod and a bushing, thus avoiding the occurrence of friction and scraping in principle and improving the stability of the driving valve 10.

[0057] In some embodiments, the magnetic mechanism 15 includes a first magnetic part 151 and a second magnetic part 152 that are oppositely arranged. The first magnetic part 151 and the second magnetic part 152 have opposite magnetic polarities, and the conductive liquid is provided between the first magnetic part 151 and the second magnetic part 152.

[0058] In the above structure of the embodiment of the present application, since the first magnetic part 151 and the second magnetic part 152 have opposite magnetic polarities, a magnetic field can be formed between the first magnetic part 151 and the second magnetic part 152, so that the conductive liquid located between the first magnetic part 151 and the second magnetic part 152 flows under the action of the Lorentz force when energized.

[0059] In some embodiments, the first magnetic part 151 and the second magnetic part 152 are respectively connected to the wall of the first fluid chamber 111. The first magnetic part 151 and the second magnetic part 152 can be directly in contact with the conductive liquid, with a compact structure, a relatively stronger magnetic field, a greater Lorentz force, and a faster response of the driving valve 10.

[0060] In some embodiments, the magnetic mechanism 15 includes a first magnetic member and a second magnetic member. The first magnetic member and the second magnetic member are spaced apart along a first direction X. The first magnetic member includes the first magnetic part 151, and the second magnetic member includes the second magnetic part 152. Among them, the first direction X is perpendicular to the deformation direction of the first deformable member 12. The deformation direction of the first deformable member 12 is Figure 2 the third direction Z indicated by the arrow in, that is, the first direction X and the third direction Z are perpendicular to each other.

[0061] In the embodiment of the present application, the magnetic mechanism 15 includes two components, namely a first magnetic member and a second magnetic member. Of course, it can be understood that the magnetic mechanism 15 can also be a component having a first magnetic part 151 and a second magnetic part 152, as long as the magnetic mechanism 15 can form a magnetic field acting on the conductive liquid.

[0062] In some embodiments, the magnetic mechanism 15 includes at least one of a magnet, an electromagnet, and an energized coil. Among them, the magnet can be various components that can generate a magnetic field, such as a permanent magnet. The electromagnet and the energized coil can generate a magnetic field after being energized, and are also suitable for application on the drive valve 10.

[0063] It can be understood that the specific material of the magnet is not limited in the embodiments of the present application. The stronger the magnetism of the magnet, the greater the Lorentz force generated under the same current in the conductive liquid, and the faster the drive valve 10 responds. Therefore, a magnet made of a suitable material can be selected according to the usage requirements. For example, the magnet is a neodymium iron boron permanent magnet.

[0064] In some embodiments, the drive valve 10 further includes a valve stem assembly 14. The valve stem assembly 14 is connected to the end of the first deformable member 12 facing away from the first valve body 11. The first deformable member 12 deforms to control the operation of the overflow valve 20 through the valve stem assembly 14. In the drive valve 10 of the present application, the valve stem assembly 14 contacts the overflow valve 20 and controls the operation of the overflow valve 20.

[0065] In some embodiments, the valve stem assembly 14 includes a pilot valve stem 141 and a pilot valve plug 142. One end of the pilot valve stem 141 is connected to the first deformable member 12, and the other end of the pilot valve stem 141 is connected to the pilot valve plug 142. The pilot valve plug 142 is used to abut against the valve slider 21 to block or open the slider opening 211 on the valve slider 21, and to push the valve slider 21 to move.

[0066] In some embodiments, the valve stem assembly 14 can be a single component, that is, the pilot valve stem 141 and the pilot valve plug 142 are an integral structural member. In this way, the number of components in the drive valve 10 can be reduced, and the assembly is more convenient.

[0067] In some embodiments, the first deformable member 12 is a first bellows.

[0068] A bellows refers to a tubular elastic sensitive element formed by connecting foldable corrugated sheets along the folding and telescoping direction. When the magnetic mechanism 15 drives the conductive liquid to move towards the first bellows, more conductive liquid enters the tube body of the first bellows, and the end of the first bellows facing away from the first valve body 11 moves away from the first valve body 11. The first bellows will then drive the valve stem assembly 14 towards the overflow valve 20. When the magnetic mechanism 15 drives the conductive liquid to move away from the first bellows, at least part of the conductive liquid is removed from the tube body of the first bellows, and the end of the first bellows facing away from the first valve body 11 moves towards the first valve body 11. The first bellows will then move away from the overflow valve 20.

[0069] In some embodiments, since the first bellows is an elastic sensitive element, one end of the first bellows abuts against the first valve body 11, and the other end abuts against the valve stem assembly 14. Thus, when the drive valve 10 is in the initial state, the first bellows will impart elastic potential energy to the valve stem assembly 14, causing the valve stem assembly 14 to block the slider opening 211 on the valve slider 21, and push the valve slider 21 to move to an appropriate position. Even the valve slider 21 moves into contact with the overflow valve seat 23 on the overflow valve 20, minimizing the flow rate of the overflow valve 20.

[0070] In some embodiments, a limit groove 121 is provided at the end of the first bellows facing the overflow valve 20; the valve stem assembly 14 is inserted into the limit groove 121.

[0071] In the embodiments of the present application, the limit groove 121 limits the valve stem assembly 14, preventing the valve stem assembly 14 from moving in a direction other than the reciprocating movement direction of the valve stem assembly 14. For example, moving in the radial direction of the valve stem assembly 14 can improve the stability of the drive valve 10.

[0072] In other embodiments, the end of the first bellows facing the overflow valve 20 is fixedly connected to the valve stem assembly 14, and the fixed connection method can be welding, connection with fasteners such as bolts, or other achievable methods.

[0073] In some embodiments, the first valve body 11 further has a valve body chamber 112; the drive valve 10 further includes a second deformation member 13 disposed in the valve body chamber 112. The second deformation member 13 divides the valve body chamber 112 into a first fluid chamber 111 and a second fluid chamber 113. The first fluid chamber 111 is located on the side of the second fluid chamber 113 facing the overflow valve 20. When the conductive liquid moves towards the first deformation member 12, the second deformation member 13 deforms towards the first deformation member 12. When the conductive liquid moves away from the first deformation member 12, the second deformation member 13 deforms in the direction away from the first deformation member 12.

[0074] In the embodiment of the present application, when the drive valve 10 is in use, a conductive liquid electrically connected to a power supply member is disposed in the first fluid chamber 111. After the conductive liquid is energized, the conductive liquid will be subjected to the Lorentz force in the magnetic field of the magnetic mechanism 15 and move toward the second deformable member 13, causing the second deformable member 13 to deform in a direction away from the first deformable member 12, and the conductive liquid moves away from the first deformable member 12, and the first deformable member 12 deforms in a direction away from the overflow valve 20. The conductive liquid will be subjected to the Lorentz force in the magnetic field of the magnetic mechanism 15 and move toward the first deformable member 12, the second deformable member 13 deforms toward the first deformable member 12, and the conductive liquid moves into the first deformable member 12, causing the first deformable member 12 to deform toward the overflow valve 20.

[0075] In the embodiment of the present application, the first fluid chamber 111 is a closed chamber for disposing the conductive liquid, and the first fluid chamber 111 and the second fluid chamber 113 are not communicated to prevent the conductive liquid from mixing with the damping oil.

[0076] In some embodiments, the second deformable member 13 includes one of a second bellows and a thin film.

[0077] In the embodiment of the present application, when the second deformable member 13 is a second bellows, when the magnetic mechanism 15 drives the conductive liquid to move toward the second bellows, more conductive liquid enters the second bellows, and one end of the second bellows away from the first deformable member 12 moves in a direction away from the first deformable member 12. Similarly, when the second deformable member 13 is a thin film, when the magnetic mechanism 15 drives the conductive liquid to move toward the thin film, the thin film deforms in a direction away from the first deformable member 12 to accommodate more conductive liquid. Both the second bellows and the thin film are suitable for use in the drive valve 10 and are used as the second deformable member 13.

[0078] When the drive valve 10 of the embodiment of the present application is in use, when the magnetic field directions generated by the first magnetic portion 151 and the second magnetic portion 152 remain unchanged, if the current direction in the conductive liquid changes, the moving direction of the conductive liquid changes, and the conductive liquid moves toward the first deformable member 12 or toward the second deformable member 13.

[0079] In some embodiments, the first valve body 11 is provided with a damping hole 16. One end of the damping hole 16 is communicated with the second fluid chamber 113, and the other end of the damping hole 16 is communicated with the gap between the drive valve 10 and the overflow valve 20.

[0080] In the embodiment of the present application, when the magnetic mechanism 15 drives the conductive liquid to move towards the first deformable member 12, more conductive liquid enters the first deformable member 12, the second deformable member 13 deforms towards the first deformable member 12, and the pressure in the second fluid chamber 113 becomes smaller. At this time, the damping oil enters the second fluid chamber 113 through the damping hole 16. When the magnetic mechanism 15 drives the conductive liquid to move towards the second deformable member 13, more conductive liquid enters the second deformable member 13, the second deformable member 13 deforms away from the first deformable member 12 to reduce the second fluid chamber 113, and the pressure in the second fluid chamber 113 increases. At this time, the damping oil flows out of the second fluid chamber 113 through the damping hole 16. The damping oil flowing into or out of the second fluid chamber 113 through the damping hole 16 will be subject to a damping effect, thereby enhancing the damping characteristics of the drive valve 10 and improving the movement stability of the drive valve 10.

[0081] In some embodiments, the damping hole 16 is configured as an elongated hole, and can also be set as a multi-segment hole with multiple diameters according to the usage requirements, so that the damping oil flowing into or out of the second fluid chamber 113 through the damping hole 16 will be subject to a damping effect, and this damping force will be equivalently applied to the drive valve 10 to improve the actuation stability of the drive valve 10.

[0082] In some embodiments, the drive valve 10 further includes a first conductor and a second conductor. The first conductor and the second conductor are respectively connected to the first valve body 11 and are spaced apart in the second direction Y. The conductive liquid is provided between the first conductor and the second conductor; one of the first conductor and the second conductor is configured to be electrically connected to the positive pole of the power supply member, and the other is configured to be electrically connected to the negative pole of the power supply member; wherein, the second direction Y is perpendicular to the deformation direction of the first deformable member 12, that is, perpendicular to the third direction Z, and the first direction X, the second direction Y, and the third direction Z are perpendicular to each other in pairs.

[0083] In the embodiment of the present application, the first conductor and the second conductor are configured to be electrically connected to the power supply member. When the drive valve 10 is in use, one of the first conductor and the second conductor is configured to be electrically connected to the positive pole of the power supply member, and the other is configured to be electrically connected to the negative pole of the power supply member. In this way, when the first conductor and the second conductor are in contact with the conductive liquid, an electric current is formed in the conductive liquid so that the conductive liquid is subjected to the Lorentz force and moves in the magnetic field.

[0084] It can be understood that in the embodiment of the present application, the specific material of the conductive liquid is not limited, as long as it meets the usage requirements of the drive valve 10. For example, the conductive liquid is one of liquid gallium, mercury liquid, and gallium-based alloy liquid.

[0085] Among them, liquid gallium has excellent electrical conductivity and thermal conductivity, and is the liquid substance with the largest electrical conductivity and thermal conductivity at room temperature. It can be understood that in actual use, a variety of other conductive liquids can also be selected to meet the usage requirements of driving the valve 10, and it is a flowable liquid in the conventional usage environment.

[0086] The working principle and process of the driving valve 10 in the embodiments of the present application are as follows:

[0087] Referring to Figure 3 As shown, there is a magnetic field between the first magnetic part 151 and the second magnetic part 152. Assuming the magnetic field strength of this magnetic field is B (the magnetic field direction is the first direction X), the current passed through the conductive liquid is I (the current direction is the second direction Y), and the direction of the Lorentz force F (the direction of the Lorentz force F is the third direction Z) is perpendicular to B and I. The direction of F can be determined by the left-hand rule. Therefore, by changing the direction of the current, the Lorentz force can be reversed, realizing the reciprocating flow of the conductive liquid in the third direction Z, that is, moving into the first deformation part 12 or moving into the second deformation part 13. Among them, the Lorentz force F = QvB, Q = It, that is, F = ItvB. From the above formula of the Lorentz force, it can be seen that the magnitude of the Lorentz force is positively correlated with B and I. By changing the magnitude of at least one of the current and the magnetic field strength, the regulation of different actuating forces can be achieved.

[0088] Referring to Figure 4 As shown, when an outward current I is applied to the conductive liquid and there is a magnetic field B from left to right between the first magnetic part 151 and the second magnetic part 152, the conductive liquid will be subjected to the action of a downward Lorentz force F, and the conductive liquid moves into the first deformation part 12. The first deformation part 12 deforms and transmits the force and motion to the valve stem assembly 14, thereby pushing the valve stem assembly 14 towards the overflow valve 20 to achieve the control of the overflow valve 20, and further realizing the adjustment function of the damping valve device. At the same time, the second deformation part 13 deforms towards the first fluid chamber 111, and the space in the second fluid chamber 113 increases, and the damping oil will flow in through the damping hole 16 as shown by the arrow.

[0089] Referring to Figure 5 As shown, when an inward current I is applied to the conductive liquid and there is a magnetic field B from left to right between the first magnetic part 151 and the second magnetic part 152, the conductive liquid will be subjected to the action of an upward Lorentz force F, and the conductive liquid moves into the second deformation part 13. The first deformation part 12 deforms towards the first fluid chamber 111, and the first deformation part 12 pulls the valve stem assembly 14 to move away from the overflow valve 20 to achieve the control of the overflow valve 20. The second deformation part 13 deforms in a direction away from the first deformation part 12, and the space in the second fluid chamber 113 decreases, and the damping oil in the second fluid chamber 113 will flow out through the damping hole 16 as shown by the arrow.

[0090] In the driving valve 10 in the embodiments of the present application, the movement of the conductive liquid is controlled by the Lorentz force, which has an instantaneous response speed, so that the driving valve 10 has the advantage of fast response speed, and further makes the damping valve device have the advantage of fast response speed; the fast response speed of the driving valve 10 and the movement of the first deformable member 12 towards the first valve body 11 can give the valve stem assembly 14 a reverse force away from the overflow valve 20 through the first deformable member 12 to achieve operations such as rapid pressure relief or pressure increase; moreover, there is no small-gap contact between rigid bodies in the structure of the driving valve 10, such as the contact between the guide rod and the bushing, thus avoiding the occurrence of friction and scraping in principle and improving the stability of the driving valve 10.

[0091] In some embodiments, the present application provides a damping valve device, which includes the driving valve 10 as described above. Since the driving valve 10 has the advantages of fast response speed, rapid pressure relief or pressure increase operations, and high stability, the damping valve device has the advantages of fast response speed and high stability.

[0092] In some embodiments, the damping valve device further includes an overflow valve 20. The overflow valve 20 includes a valve slider 21, and the valve slider 21 is provided with a fluid passage 25 and a slider opening 211 communicating with the fluid passage 25. The slider opening 211 faces the driving valve 10; the first deformable member 12 of the driving valve 10 deforms to drive the valve stem assembly 14 to move, and the valve stem assembly 14 opens or blocks the slider opening 211 and controls the movement of the valve slider 21.

[0093] In some embodiments, the damping valve device includes a valve sleeve, a driving valve 10 and an overflow valve 20. The damping valve device is connected to a piston rod 57. One end of the piston rod 57 is provided with a mounting cylinder 58. The valve sleeve is connected to the mounting cylinder 58 and defines a receiving space with the mounting cylinder 58. The overflow valve 20 and the driving valve 10 are arranged in the receiving space. The valve sleeve includes a second valve body 31, a third valve body 32 and a fourth valve body 33 arranged in sequence.

[0094] The overflow valve 20 includes an overflow valve seat 23, a valve slider 21, an overflow valve plate 22 and an elastic member 24. The overflow valve seat 23 is located between the compression chamber 55 and the recovery chamber 56 of the shock absorber 50 and is provided with a fluid passage 25 communicating the compression chamber 55 and the recovery chamber 56. The valve slider 21 is arranged on the side of the overflow valve seat 23 close to the driving valve 10; the overflow valve plate 22 is movably arranged between the overflow valve seat 23 and the valve slider 21, and the overflow valve plate 22 is provided with a through hole communicating the fluid passage 25 of the overflow valve seat 23.

[0095] In some embodiments, the damping valve device further includes a piston valve 40 disposed on a side of the overflow valve 20 away from the drive valve 10. The piston valve 40 is disposed between the third valve body 32 and the fourth valve body 33. A piston channel is provided on the piston valve 40, and the piston channel communicates with the compression chamber 55 and the fluid channel 25 of the overflow valve seat 23. The specific structure of the piston valve 40 is similar to that of the piston valve of the damping valve device in the current technology, and no limitation is made thereto.

[0096] In some specific embodiments, during the operation of the damping valve device, when the shock absorber 50 operates in the rebound stage, the valve stem assembly 14 of the drive valve 10 moves toward the overflow valve 20, blocking the slider opening 211 and causing the drive valve slider 21 and the overflow valve piece 22 to move toward the overflow valve seat 23, thereby closing some of the passages in the fluid channel 25 of the overflow valve seat 23. When the shock absorber 50 operates in the compression stage, the damping oil flows from the compression chamber 55 to the rebound chamber 56, and the damping oil generates an upward fluid pressure on the overflow valve piece 22 and the valve slider 21 that pushes the overflow valve piece 22. When the fluid pressure is greater than the driving force provided by the drive valve 10 (the driving force provided by the drive valve 10 can be set according to the usage requirements. For example, when the magnetic field is constant, the driving force is greater when the current flowing through the conductive liquid is larger, and the driving force decreases when the current flowing through the conductive liquid is larger. The driving force provided by the drive valve 10 can be a fixed value or a variable value, etc., and is specifically set flexibly according to the usage requirements), the damping oil will push open the overflow valve piece 22, the valve slider 21, and the valve stem assembly 14, so that the passages closed in the fluid channel 25 are opened. At this time, the fluid channel 25 of the overflow valve seat 23 is completely opened, and the fluid flow rate flowing between the compression chamber 55 and the rebound chamber 56 through the fluid channel 25 is large. Further, at the end of the compression stage of the shock absorber 50, as the damping oil in the compression chamber 55 decreases, the fluid pressure gradually decreases. When the sum of the fluid pressure and the elastic force of the elastic member 24 is less than the driving force provided by the drive valve 10, the valve stem assembly 14 blocks the slider opening 211 again, and pushes the valve slider 21 to make the valve slider 21 push the overflow valve piece 22 to fit the overflow valve seat 23 again, thereby closing some of the passages of the fluid channel.

[0097] In the embodiments of the present application, the drive valve 10 can adjust the fluid flow rate flowing between the compression chamber 55 and the rebound chamber 56 through the fluid channel 25 of the overflow valve seat 23. Since the drive valve 10 controls the flow direction of the current in the conductive liquid, and uses the first magnetic part 151 and the second magnetic part 152 to generate a magnetic field in the conductive liquid, and then controls the flow direction of the conductive liquid through the Lorentz force to realize the movement of the valve stem assembly 14 acting on the overflow valve 20, it has an instantaneous response speed, and at the same time can give a reverse force to achieve operations such as rapid pressure relief or pressure increase, improving the response speed of the damping valve device; moreover, there is no small-gap contact between rigid bodies in the structure of the drive valve 10, avoiding the occurrence of friction and scratching, and also improving the stability of the damping valve device.

[0098] In some embodiments, the present application also provides a shock absorber 50, which includes a cylinder 51, a piston rod 57 and a damping valve device as described above, wherein the piston rod 57 is movably inserted into the cylinder 51; the damping valve device is connected to one end of the piston rod 57 extending into the cylinder 51.

[0099] In the embodiment of the present application, the shock absorber 50 is used to achieve shock absorption of the vehicle. One end of the piston rod 57 passes through the cylinder 51 and extends into the inner cavity of the cylinder 51. The end of the piston rod 57 exposed outside the cylinder 51 is used to connect to the vehicle body, and the end of the cylinder 51 away from the piston rod 57 is used to connect to the wheel. When the wheel is stimulated by the road surface and generates relative motion with the vehicle body, the piston rod 57 can drive the damping valve device to reciprocate along the axial direction of the cylinder 51 to adjust the damping force of the shock absorber 50 during the shock absorption process.

[0100] In the embodiment of the present application, the damping valve device is slidably in contact with the inner wall of the cylinder 51, and divides the inner cavity of the cylinder 51 into a compression chamber 55 and a restoring chamber 56. When the damping valve device follows the piston rod 57 to reciprocate in the cylinder 51, the flow rate of the damping oil flowing between the compression chamber 55 and the restoring chamber 56 can be adjusted, so that the shock absorber 50 has a shock absorbing performance.

[0101] Since the damping valve device has the advantages of fast response speed and high stability, the shock absorber 50 also has the advantages of fast response speed and high stability.

[0102] In some embodiments, the present application also provides a suspension system, which includes the shock absorber 50 as described above. Since the shock absorber 50 has the advantages of fast response speed and high stability, it can improve the control accuracy of the suspension system and improve driving comfort and safety.

[0103] In some embodiments, the present application also provides a vehicle, comprising a vehicle body and a suspension system as described above, wherein the vehicle body is connected to the suspension system.

[0104] In the embodiments of the present application, the driving valve, the damping valve device, the shock absorber, the suspension system and the vehicle can refer to each other and have the same or similar beneficial effects as any of the aforementioned driving valves and damping valve devices. In order to avoid repetition, they will not be described here.

[0105] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0106] Each embodiment in this specification is described in a related manner. For the same or similar parts among the embodiments, reference can be made to each other, and the differences between each embodiment and other embodiments are emphasized.

[0107] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention is included in the protection scope of the present invention.

Claims

1. A drive valve for controlling an overflow valve (20) in a damping valve device, characterized in that, The drive valve comprises: A first valve body (11) is provided with a first fluid chamber (111), wherein the first fluid chamber (111) is configured to contain a conductive liquid; A first deformable member (12) connected to the first valve body (11), the first deformable member (12) covering a side of the first fluid chamber (111) facing the overflow valve (20); A magnetic mechanism (15) is connected to the first valve body (11), and the magnetic mechanism (15) is configured to drive the electrically conductive liquid to move toward or away from the first deformable member (12), so as to deform the first deformable member (12) to control the action of the overflow valve (20).

2. The drive valve according to claim 1, characterized in that, The magnetic mechanism (15) comprises a first magnetic part (151) and a second magnetic part (152) which are arranged opposite to each other, the first magnetic part (151) and the second magnetic part (152) having opposite magnetic properties, and the conductive liquid is arranged between the first magnetic part (151) and the second magnetic part (152).

3. The drive valve according to claim 2, characterized in that, The magnetic mechanism (15) comprises a first magnetic member and a second magnetic member, the first magnetic member and the second magnetic member are arranged at intervals along a first direction, the first magnetic member comprises the first magnetic portion (151), and the second magnetic member comprises the second magnetic portion (152); wherein the first direction (X) is perpendicular to the deformation direction of the first deformable member (12).

4. The drive valve according to claim 2, wherein The magnetic mechanism (15) comprises at least one of a magnet and an energized coil.

5. The drive valve according to claim 1, characterized in that, The drive valve further comprises a valve stem assembly (14), wherein the valve stem assembly (14) is connected to an end of the first deformable member (12) facing away from the first valve body (11), and the first deformable member (12) is deformed to control the action of the relief valve (20) through the valve stem assembly (14).

6. The drive valve according to claim 1, characterized in that, The first deformable member (12) is a first bellows.

7. The drive valve according to claim 6, characterized in that, The drive valve further comprises a valve stem assembly (14); one end of the first bellows abuts against the first valve body (11), and the other end abuts against the valve stem assembly (14).

8. The drive valve according to claim 7, characterized in that, A limiting groove (121) is provided at the end of the first bellows facing the overflow valve (20); The valve stem assembly (14) is inserted into the limiting groove (121).

9. The drive valve according to claim 1, characterized in that, The first valve body (11) is further provided with a valve body chamber (112); the drive valve further comprises: a second deformable member (13) disposed in the valve body chamber (112), the second deformable member (13) dividing the valve body chamber (112) into the first fluid chamber (111) and a second fluid chamber (113), the first fluid chamber (111) being located on a side of the second fluid chamber (113) facing the overflow valve (20); When the conductive liquid moves toward the first deformable member (12), the second deformable member (13) deforms toward the first deformable member (12); when the conductive liquid moves away from the first deformable member (12), the second deformable member (13) deforms in a direction away from the first deformable member (12).

10. The drive valve according to claim 9, characterized in that, The second deformation member (13) comprises one of a second bellows and a film.

11. The drive valve according to claim 9, characterized in that the first valve body (11) is provided with a damping hole (16), one end of the damping hole (16) communicates with the second fluid chamber (113), and the other end of the damping hole (16) communicates with the gap between the drive valve and the overflow valve (20).

12. The drive valve according to claim 1, characterized in that, The drive valve further includes a first conductor and a second conductor, which are respectively connected to the first valve body (11) and are spaced apart in the second direction (Y), and the conductive liquid is provided between the first conductor and the second conductor; one of the first conductor and the second conductor is configured to be electrically connected to the positive pole of the power supply member, and the other is configured to be electrically connected to the negative pole of the power supply member; wherein, the second direction (Y) is perpendicular to the deformation direction of the first deformable member (12).

13. The drive valve according to claim 1, characterized in that, The conductive liquid is one of liquid gallium, mercury liquid, and gallium-based alloy liquid.

14. A damping valve device, characterized in that, including the drive valve according to any one of claims 1 to 13.

15. The damping valve device according to claim 14, characterized in that, The damping valve device further includes an overflow valve (20), the overflow valve (20) includes a valve slider (21), the valve slider (21) is provided with a fluid passage (25) and a slider opening (211) communicating with the fluid passage (25), and the slider opening (211) faces the drive valve; the first deformable member (12) of the drive valve deforms to drive the valve stem assembly (14) to move, the valve stem assembly (14) opens or blocks the slider opening (211), and controls the movement of the valve slider (21).

16. A shock absorber, characterized in that, including a cylinder barrel (51); a piston rod (57) movably passing through the cylinder barrel (51); a damping valve device connected to one end of the piston rod (57) extending into the cylinder barrel (51), and the damping valve device is the damping valve device according to claim 14 or 15.

17. A suspension system, characterized in that, including the shock absorber according to claim 16.

18. A vehicle, characterized in that, including a vehicle body and a suspension system according to claim 17, and the vehicle body is connected to the suspension system.

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