Driving valve, damping valve device, shock absorber, suspension system and vehicle

Abstract

The invention relates to the technical field of damping devices, in particular to a driving valve, a damping valve device, a damper, a suspension system and a vehicle. A first valve body in the driving valve is provided with a first fluid chamber, and the first fluid chamber is configured to be provided with conductive liquid; the first deformation part is connected with the first valve body, and the first deformation part covers the side, facing the overflow valve, of the first fluid cavity in a sealing mode; the magnetic mechanism is connected with the first valve body and is configured to drive the electrified conductive liquid to move towards or away from the first deformation piece, so that the first deformation piece deforms to control the overflow valve to act. The driving valve drives the conductive liquid to flow through Lorentz force, and has instantaneous response speed, so that the driving valve has the advantage of high response speed; the response speed of the driving valve is high, the first deformation piece moves towards the first valve body, and the first deformation piece can give the valve rod assembly opposite force away from the overflow valve to achieve operation such as rapid pressure relief or pressurization.

Description

Technical Field

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

[0002] In order to improve the smoothness of vehicle driving, shock absorbers are usually installed in the vehicle's suspension system. A damping valve device for adjusting the damping force is provided in the shock absorber.

[0003] In the related art, the damping valve device can realize damping adjustment through the solenoid valve, that is, by controlling the current flowing through the coil in the solenoid valve, the axial force of the magnetic core is controlled, thereby realizing damping adjustment. However, due to the inductance of the coil and the large mass of the magnetic core component, the solenoid valve has the defect of slow response, resulting in the damping valve device having the defect of slow response speed. Summary of the invention

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

[0005] In a first aspect, an embodiment of the present invention provides a driving valve, which is used to control a relief valve in a damping valve device, and the driving valve includes: A first valve body having a first fluid chamber, wherein the first fluid chamber is configured to be provided with a conductive liquid; a first deformable member connected to the first valve body, wherein the first deformable member covers a side of the first fluid chamber facing the overflow valve; The magnetic mechanism is connected to the first valve body, and is configured to drive the electrically conductive liquid to move toward or away from the first deformable member, so that the first deformable member is deformed to control the action of the overflow valve.

[0006] In some embodiments, the magnetic mechanism includes a first magnetic portion and a second magnetic portion that are arranged opposite to each other, the magnetic properties of the first magnetic portion and the second magnetic portion are opposite to each other, and the conductive liquid is arranged between the first magnetic portion and the second magnetic portion.

[0007] In some embodiments, the magnetic mechanism 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, 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.

[0008] In some embodiments, the magnetic mechanism includes at least one of a magnet, an electromagnet, and an energized coil.

[0009] 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.

[0010] In some embodiments, the first deformable member is a first bellows.

[0011] 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.

[0012] In some embodiments, a limiting groove is provided at the end of the first bellows facing the overflow valve; The valve stem assembly is inserted into the limiting groove.

[0013] In some embodiments, the first valve body is further provided with a valve body chamber; the drive valve further comprises: 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; 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.

[0014] In some embodiments, the second deformation member includes one of a second bellows and a membrane.

[0015] 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.

[0016] In some embodiments, the actuated valve further comprises: 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; 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; The second direction is perpendicular to the deformation direction of the first deformable member.

[0017] In some embodiments, the conductive liquid is one of liquid gallium, liquid mercury, and liquid gallium-based alloy.

[0018] In a second aspect, an embodiment of the present invention further provides a damping valve device, the damping valve device comprising the driving valve as described above.

[0019] In some embodiments, the damping valve device also includes an overflow valve, which includes a valve slider, and the valve slider is provided with a fluid channel and a slider opening connected to the fluid channel, and the slider opening faces the driving valve; the first deformable member of the driving valve is deformed to drive the valve stem assembly to move, and the valve stem assembly opens or blocks the slider opening, and controls the movement of the valve slider.

[0020] In a third aspect, an embodiment of the present invention further provides a shock absorber, the shock absorber comprising: Cylinder barrel; A piston rod is movably disposed in the cylinder; A damping valve device is connected to the end of the piston rod extending into the cylinder, and the damping valve device is the damping valve device as described above.

[0021] In a fourth aspect, an embodiment of the present invention further provides a suspension system, the suspension system comprising the shock absorber as described above.

[0022] In a fifth aspect, an embodiment of the present invention further provides a vehicle, comprising a vehicle body and a suspension system as described above, wherein the vehicle body is connected to the suspension system.

[0023] Compared with the prior art, the present invention has the following advantages: When in use, the driving valve of the embodiment of the present invention drives the conductive liquid to flow through the Lorentz force and has an instantaneous response speed, so that the driving valve has the advantage of fast response speed, and thus the damping valve device has the advantage of fast response speed; the driving valve has a fast response speed and moves the first deformable member toward the first valve body, and the first deformable member can give the valve stem assembly a reverse force away from the overflow valve to achieve rapid pressure relief or pressure increase and other operations; moreover, the driving valve structure does not have small gap contacts between rigid bodies, such as the contact between the guide rod and the sleeve, which in principle avoids the occurrence of friction and scratching, thereby improving the stability of the driving valve.

[0024] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for describing the embodiments are briefly introduced below.

[0026] Figure 1 is a schematic diagram of the structure of the shock absorber in the embodiment of the present application; Figure 2 yes Figure 1 The structural diagram of the enlarged view of the middle M part; Figure 3 The working principle of the driving valve in the embodiment of the present application is shown in FIG. Figure 1 ; Figure 4 The working principle of the driving valve in the embodiment of the present application is shown in FIG. Figure 2 ; Figure 5 The working principle of the driving valve in the embodiment of the present application is shown in FIG. Figure 3 .

[0027] Reference numerals: 10. driving valve; 11. first valve body; 111. first fluid chamber; 112. valve body chamber; 113. second fluid chamber; 12. first deforming member; 121. limiting groove; 13. second deforming member; 14. valve stem assembly; 141. pilot valve stem; 142. pilot valve plug; 15. magnetic mechanism; 151. first magnetic part; 152. second magnetic part; 16. damping hole; 20. Overflow valve; 21. Valve slider; 211. Slider opening; 22. Overflow valve plate; 23. Overflow valve seat; 24. Elastic member; 25. Fluid channel; 31. Second valve body; 32. Third valve body; 33. Fourth valve body; 40. Piston valve; 50. shock absorber; 51. cylinder; 55. compression chamber; 56. recovery chamber; 57. piston rod; 58. mounting tube; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0028] The 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 accompanying drawings, it should be understood that the present invention can also be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0029] Reference Figures 1 to 5 As shown, the embodiment of the present application provides a driving valve 10 for a damping valve device, which has the advantages of fast response speed and high stability.

[0030] The drive valve, damping valve device, shock absorber, suspension system and vehicle provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in combination with the accompanying drawings.

[0031] In some embodiments, the driving valve 10 for the damping valve device is arranged at intervals from the overflow valve 20 in the damping valve device, and the driving valve 10 is used to control the action of the overflow valve 20. The driving 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 electrically conductive liquid to move toward or away from the first deformable member 12, so that the first deformable member 12 is deformed to control the action of the overflow valve 20.

[0032] In the embodiment of the present application, when the driving valve 10 is in use, a conductive liquid electrically connected to the power supply is arranged 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 is deformed, that is, the conductive liquid moves toward the first deformable member 12, and the first deformable member 12 is deformed in a direction away from the first valve body 11. The conductive liquid moves in a direction away from the first deformable member 12, and 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 action of the overflow valve 20.

[0033] Among them, the Lorentz force is the force generated by the magnetic field on the moving charges. The moving charges are generated by the electric field. The direction of the Lorentz force is perpendicular to the directions of the electric field and the magnetic field. It has an instantaneous response speed, which is faster than the response speed of the electromagnetic force generated by the coil core, so that the drive valve 10 has the advantage of fast response speed, and then the damping valve device has the advantage of fast response speed; the drive valve 10 has a fast response speed and moves the first deformable member 12 toward the first valve body 11, and the first deformable member 12 can give the valve stem assembly 14 a reverse force away from the overflow valve 20 to achieve rapid pressure relief or pressure increase and other operations; moreover, the drive valve 10 does not have a small gap contact between rigid bodies in structure, such as the contact between the guide rod and the sleeve, which in principle avoids the occurrence of friction and scratching, thereby improving the stability of the drive valve 10.

[0034] In some embodiments, the magnetic mechanism 15 includes a first magnetic portion 151 and a second magnetic portion 152 that are arranged opposite to each other, the first magnetic portion 151 and the second magnetic portion 152 have opposite magnetism, and the conductive liquid is disposed between the first magnetic portion 151 and the second magnetic portion 152 .

[0035] In the above structure of the embodiment of the present application, the magnetism of the first magnetic part 151 and the second magnetic part 152 are opposite, and 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 power is turned on.

[0036] In some embodiments, the first magnetic portion 151 and the second magnetic portion 152 are respectively connected to the cavity wall of the first fluid chamber 111. The first magnetic portion 151 and the second magnetic portion 152 can directly contact the conductive liquid. The structure is compact, and the magnetic field is relatively stronger, the Lorentz force is greater, and the response of the driving valve 10 is faster.

[0037] 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 arranged in a first direction X, the first magnetic member includes a first magnetic portion 151, and the second magnetic member includes a second magnetic portion 152; wherein 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 middle arrow, that is, the first direction X and the third direction Z are perpendicular to each other.

[0038] In the embodiment of the present application, the magnetic mechanism 15 includes two components, a first magnetic component and a second magnetic component. Of course, it is understandable that the magnetic mechanism 15 can also be a component having a first magnetic part 151 and a second magnetic part 152, and the magnetic mechanism 15 can form a magnetic field acting on the conductive liquid.

[0039] In some embodiments, the magnetic mechanism 15 includes at least one of a magnet, an electromagnet, and a powered coil. The magnet can be a permanent magnet or other component that can generate a magnetic field. The electromagnet and the powered coil can generate a magnetic field after being energized, and are also suitable for use on the drive valve 10.

[0040] It is understandable that the embodiments of the present application do not limit the specific material of the magnet. The stronger the magnetism of the magnet, the greater the Lorentz force generated when the current in the conductive liquid is the same, and the faster the response of the drive valve 10. Therefore, a magnet of suitable material can be selected according to usage requirements, for example, the magnet is a neodymium iron boron permanent magnet.

[0041] 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 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. The drive valve 10 in the present application is that the valve stem assembly 14 contacts the relief valve 20 and controls the action of the relief valve 20.

[0042] 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 deformation 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.

[0043] 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 integrated structure, so that the number of parts in the drive valve 10 can be reduced and assembly is more convenient.

[0044] In some embodiments, the first deformation member 12 is a first bellows.

[0045] The bellows refers to a tubular elastic sensitive element connected by foldable corrugated sheets along the folding and stretching direction. When the magnetic mechanism 15 drives the conductive liquid to move toward the first bellows, more conductive liquid enters the tube body of the first bellows, and the end of the first bellows away from the first valve body 11 moves in a direction away from the first valve body 11, and the first bellows will drive the valve stem assembly 14 to move toward the relief 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 moves out of the tube body of the first bellows, and the end of the first bellows away from the first valve body 11 moves toward the first valve body 11, and the first bellows will move away from the relief valve 20.

[0046] 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. In this way, when the driving valve 10 is in the initial state, the first bellows will give elastic potential energy to the valve stem assembly 14, so that the valve stem assembly 14 blocks the slider opening 211 on the valve slider 21, and pushes the valve slider 21 to move to an appropriate position, and even the valve slider 21 moves to contact the relief valve seat 23 on the relief valve 20, so that the flow of the relief valve 20 is minimized.

[0047] In some embodiments, a limiting groove 121 is provided at the end of the first bellows facing the relief valve 20 ; the valve stem assembly 14 is inserted into the limiting groove 121 .

[0048] In the embodiment of the present application, the limiting groove 121 limits the valve stem assembly 14 to prevent the valve stem assembly 14 from moving in directions 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, thereby improving the stability of the drive valve 10.

[0049] In other embodiments, the end of the first bellows facing the relief valve 20 is fixedly connected to the valve stem assembly 14, and the fixed connection method can be welding, bolts or other fasteners connection, and other feasible methods.

[0050] In some embodiments, the first valve body 11 is also provided with a valve body chamber 112; the drive valve 10 also includes a second deformable member 13, the second deformable member 13 is provided in the valve body chamber 112, the second deformable member 13 divides the valve body chamber 112 into the first fluid chamber 111 and the 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 toward the first deformable member 12, the second deformable member 13 is deformed toward the first deformable member 12; when the conductive liquid moves away from the first deformable member 12, the second deformable member 13 is deformed in the direction of moving away from the first deformable member 12.

[0051] In the embodiment of the present application, when the driving valve 10 is in use, a conductive liquid electrically connected to the power supply is arranged in the first fluid chamber 111. After the conductive liquid is energized, the conductive liquid is subjected to the Lorentz force in the magnetic field of the magnetic mechanism 15 and moves toward the second deformable member 13, so that the second deformable member 13 is deformed 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 is deformed in a direction away from the relief valve 20. The conductive liquid is subjected to the Lorentz force in the magnetic field of the magnetic mechanism 15 and moves toward the first deformable member 12, the second deformable member 13 is deformed toward the first deformable member 12, and the conductive liquid moves into the first deformable member 12, so that the first deformable member 12 is deformed toward the relief valve 20.

[0052] In the embodiment of the present application, the first fluid chamber 111 is a closed chamber for arranging the conductive liquid, and the first fluid chamber 111 and the second fluid chamber 113 are not connected to avoid mixing of the conductive liquid and the vibration damping oil.

[0053] In some embodiments, the second deformation member 13 includes one of a second bellows and a film.

[0054] 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 the 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 film, when the magnetic mechanism 15 drives the conductive liquid to move toward the film, the film deforms in a direction away from the first deformable member 12 to accommodate more conductive liquid. Both the second bellows and the film are suitable for use in the drive valve 10 and are used as the second deformable member 13.

[0055] When the driving valve 10 of the embodiment of the present application is in use, the direction of the magnetic field generated by the first magnetic part 151 and the second magnetic part 152 remains unchanged, and the direction of the current in the conductive liquid changes, so 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.

[0056] 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 driving valve 10 and the overflow valve 20 .

[0057] In the embodiment of the present application, when the magnetic mechanism 15 drives the conductive liquid to move toward the first deformable member 12, more conductive liquid enters into the first deformable member 12, the second deformable member 13 deforms toward the first deformable member 12, and the pressure in the second fluid chamber 113 decreases. At this time, the damping oil enters into the second fluid chamber 113 through the damping hole 16. When the magnetic mechanism 15 drives the conductive liquid to move toward the second deformable member 13, more conductive liquid enters into the second deformable member 13, the second deformable member 13 deforms in a direction away from the first deformable member 12, so that the second fluid chamber 113 is reduced, 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 flows into or out of the second fluid chamber 113 through the damping hole 16, which is damped, thereby enhancing the damping characteristics of the drive valve 10 and improving the motion stability of the drive valve 10.

[0058] In some embodiments, the damping hole 16 is constructed as an elongated hole, and can also be set as a multi-segment hole with multiple diameters according to usage requirements, so that the shock-absorbing oil flowing into or out of the second fluid chamber 113 through the damping hole 16 will be damped, and this damping force will be equivalently applied to the drive valve 10, thereby improving the stability of the actuation of the drive valve 10.

[0059] In some embodiments, the driving valve 10 also 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 electrode of the power supply component, and the other is configured to be electrically connected to the negative electrode of the power supply component; 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.

[0060] In an embodiment of the present application, the first conductor and the second conductor are configured to be electrically connected to the power supply. When the driving valve 10 is in use, one of the first conductor and the second conductor is configured to be electrically connected to the positive electrode of the power supply, and the other is configured to be electrically connected to the negative electrode of the power supply. 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 moves in the magnetic field under the action of the Lorentz force.

[0061] It is understandable that in the embodiment of the present application, the specific material of the conductive liquid is not limited, and it only needs to meet the use requirements of the drive valve 10. For example, the conductive liquid is one of liquid gallium, liquid mercury, and liquid gallium-based alloy.

[0062] Among them, liquid gallium has excellent electrical conductivity and thermal conductivity, and is the liquid substance with the highest electrical conductivity and thermal conductivity at room temperature. It is understandable that in actual use, a variety of other conductive liquids can be selected to meet the use requirements of the drive valve 10 and be a flowable liquid in a normal use environment.

[0063] The working principle and process of the driving valve 10 in the embodiment of the present application are as follows: Reference Figure 3 As shown, there is a magnetic field between the first magnetic part 151 and the second magnetic part 152. Assuming that the magnetic field strength of the magnetic field is B (the direction of the magnetic field is the first direction X), the current flowing into the conductive liquid is I (the direction of the current 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 to achieve reciprocating flow of the conductive liquid in the third direction Z, that is, moving into the first deformable member 12, or into the second deformable member 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.

[0064] Reference 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 acted upon by the downward Lorentz force F, and the conductive liquid will move into the first deformable member 12, the first deformable member 12 will deform and transmit the force and motion to the valve stem assembly 14, thereby pushing the valve stem assembly 14 to move toward the overflow valve 20 to control the overflow valve 20, thereby realizing the regulating function of the damping valve device. At the same time, the second deformable member 13 deforms toward the first fluid chamber 111, 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.

[0065] Reference 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 affected by the upward Lorentz force F, and the conductive liquid moves into the second deformable member 13, and the first deformable member 12 is deformed toward the first fluid chamber 111. The first deformable member 12 pulls the valve stem assembly 14 away from the relief valve 20 to control the relief valve 20, and the second deformable member 13 is deformed in a direction away from the first deformable member 12, and the space in the second fluid chamber 113 is reduced, and the damping oil in the second fluid chamber 113 flows out through the damping hole 16 as shown by the arrow.

[0066] The driving valve 10 in the embodiment of the present application controls the movement of the conductive liquid through the Lorentz force and has an instantaneous response speed, so that the driving valve 10 has the advantage of fast response speed, and thus the damping valve device has the advantage of fast response speed; the driving valve 10 has a fast response speed and moves the first deformable member 12 toward the first valve body 11, and the first deformable member 12 can give the valve stem assembly 14 a reverse force away from the relief valve 20 to achieve operations such as rapid pressure relief or pressure increase; moreover, the driving valve 10 does not have a small gap contact between rigid bodies in structure, such as the contact between the guide rod and the sleeve, which in principle avoids the occurrence of friction and scratching, thereby improving the stability of the driving valve 10.

[0067] In some embodiments, the present application provides a damping valve device, which includes a driving valve 10 as described above. Since the driving valve 10 has the advantages of fast response speed, rapid pressure relief or pressure increase, and high stability, the damping valve device has the advantages of fast response speed and high stability.

[0068] In some embodiments, the damping valve device also includes a relief valve 20, which includes a valve slider 21, and the valve slider 21 is provided with a fluid channel 25 and a slider opening 211 connected to the fluid channel 25, and the slider opening 211 faces the driving valve 10; the first deformable member 12 of the driving valve 10 is deformed 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.

[0069] In some embodiments, the damping valve device includes a valve sleeve, a driving valve 10 and a relief valve 20. The damping valve device is connected to a piston rod 57, wherein a mounting cylinder 58 is provided at one end of the piston rod 57, the valve sleeve is connected to the mounting cylinder 58 and defines a receiving space with the mounting cylinder 58, and the relief 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 which are arranged in sequence.

[0070] 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 channel 25 connecting 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 drive 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 of the fluid channel 25 connecting the overflow valve seat 23.

[0071] In some embodiments, the damping valve device also includes a piston valve 40 arranged on the side of the overflow valve 20 away from the driving valve 10, and the piston valve 40 is arranged 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 connects 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 the structure of the piston valve of the damping valve device in the current technology, and no limitation is made to this.

[0072] In some specific embodiments, during the operation of the damping valve device, when the shock absorber 50 is working in the recovery stage, the valve stem assembly 14 of the driving valve 10 moves toward the overflow valve 20, blocking the slider opening 211 and driving the valve slider 21 and the overflow valve plate 22 to move toward the overflow valve seat 23, thereby closing part of the passage in the fluid channel 25 of the overflow valve seat 23. When the shock absorber 50 works in the compression stage, the damping oil flows from the compression chamber 55 to the restoring chamber 56, and the damping oil will generate an upward fluid pressure on the overflow valve plate 22 and the valve slider 21 that pushes the overflow valve plate 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 use requirements. For example, when the magnetic field remains unchanged, the driving force will be greater when the current flowing through the conductive liquid is larger, and the driving force will decrease 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., which can be flexibly set according to the specific use requirements), the damping oil will push open the overflow valve plate 22, the valve slider 21, and the valve stem assembly 14, so that the closed passage of the fluid channel 25 is opened. At this time, the fluid channel 25 of the overflow valve seat 23 is fully opened, and the fluid flow rate between the compression chamber 55 and the restoring chamber 56 through the fluid channel 25 is relatively large. Furthermore, when the shock absorber 50 is operating in the final stage of the compression phase, 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 so that the valve slider 21 pushes the overflow valve plate 22 again to fit the overflow valve seat 23, thereby closing part of the fluid channel.

[0073] In the embodiment of the present application, the driving valve 10 can adjust the fluid flow between the compression chamber 55 and the recovery chamber 56 through the fluid channel 25 of the overflow valve seat 23. Since the driving 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 control the movement of the valve stem assembly 14 to act on the overflow valve 20, it has an instantaneous response speed, and can also give a reverse force to achieve operations such as rapid pressure relief or pressure increase, thereby improving the response speed of the damping valve device; moreover, the driving valve 10 does not have a small gap contact between rigid bodies in structure, thereby avoiding the occurrence of friction and scratching, and also improving the stability of the damping valve device.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0082] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0083] 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 are included in the protection scope of the present invention.

Claims

1. A driving valve for controlling a relief 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, characterized in that: The magnetic mechanism (15) comprises at least one of a magnet, an electromagnet, 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) is in communication with the second fluid chamber (113), and the other end of the damping hole (16) is in communication 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 are respectively connected to the first valve body (11) and are arranged at intervals in a 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 electrode of the power supply member, and the other is configured to be electrically connected to the negative electrode 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, liquid mercury, and liquid gallium-based alloy.

14. A damping valve device, characterized in that: Comprising 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 comprises an overflow valve (20), wherein the overflow valve (20) comprises a valve slider (21), wherein the valve slider (21) is provided with a fluid channel (25) and a slider opening (211) communicating with the fluid channel (25), and the slider opening (211) faces the drive valve; The first deformable member (12) of the valve drive is deformed 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).

16. A shock absorber, characterized in that: include, Cylinder (51); A piston rod (57) movably inserted into the cylinder (51); A damping valve device is connected to the end of the piston rod (57) extending into the cylinder (51), and the damping valve device is the damping valve device according to claim 13 or 14.

17. A suspension system, characterized in that: Comprising the shock absorber of claim 16.

18. A vehicle, characterized in that: It comprises a vehicle body and the suspension system as claimed in claim 17, wherein the vehicle body is connected to the suspension system.

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