Composite valves and vibration dampers

Abstract

This invention discloses a composite valve and a vibration damper. The composite valve includes: a valve body, a valve core assembly, a first one-way valve, a second one-way valve, and an electromagnetic drive assembly. The valve core assembly and the valve body together define a first space. A first main valve port is unidirectionally connected to the first space through the first one-way valve, and the first space is unidirectionally connected to a first auxiliary valve port through the second one-way valve. The composite valve has a simple structure and can achieve separate control of the pressure in the first space under compression and recovery conditions through the first and second one-way valves, so as to independently adjust the damping force under compression and recovery conditions, thereby facilitating the platform-based design and manufacturing of the composite valve.

Description

Technical Field

[0001] This invention relates to the field of vibration damper technology, and more specifically, to a composite valve and a vibration damper. Background Technology

[0002] In related technologies, the suspension system has a significant impact on vehicle ride comfort and safety, and the shock absorber, as a key component of the suspension, has undergone several generations of upgrades since its inception. Currently, mid-to-low-end vehicles use passive shock absorbers, where the damping is a fixed value from the factory and cannot be adjusted, but they are relatively inexpensive. High-end vehicles mostly use electromagnetic shock absorbers with adjustable damping, but these are currently mostly foreign-monopolized products, resulting in high prices. Furthermore, electromagnetic shock absorbers incorporate composite valves, making their structure and principles complex and requiring high precision in components, which hinders platform-based implementation. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the aforementioned technical problems in the prior art. To this end, the present invention proposes a composite valve, which facilitates the platform-based design and manufacturing of composite valves.

[0004] The present invention also proposes a vibration damper having the above-mentioned composite valve.

[0005] A composite valve according to an embodiment of the present invention includes: a valve body having a first main valve port, a second main valve port, a first auxiliary valve port, and a second auxiliary valve port; a first medium cavity and a second medium cavity outside the valve body; the first main valve port and the first auxiliary valve port being adapted to communicate with the first medium cavity; and the second main valve port and the second auxiliary valve port being adapted to communicate with the second medium cavity; a valve core assembly movably disposed within the valve body; the valve core assembly and the valve body jointly defining a first space, and the first space communicating with the second auxiliary valve port; and a first check valve disposed within the valve body. Within the valve core assembly, the first check valve controls unidirectional communication from the first main valve orifice to the first space; the second check valve, disposed within the valve body, controls unidirectional communication from the first space to the first auxiliary valve orifice; and an electromagnetic drive assembly connected to the valve body, having a drive portion connected to the valve core assembly, which drives the valve core assembly to move between an open position and a closed position via the drive portion, thereby increasing or decreasing the flow area between the first main valve orifice and the second main valve orifice.

[0006] According to the composite valve of the present invention, the valve core assembly and the valve body together define a first space. The first main valve port is unidirectionally connected to the first space through a first check valve, and the first space is unidirectionally connected to the first auxiliary valve port through a second check valve. The composite valve has a simple structure and can achieve separate control of the pressure of the first space under compression and recovery conditions through the first and second check valves, so as to independently adjust the damping force under compression and recovery conditions, thereby facilitating the platform-based design and manufacturing of the composite valve.

[0007] According to some embodiments of the present invention, the valve core assembly includes: a valve core body and a valve core slide pin, the valve core slide pin being connected between the drive portion and the valve core body portion, the valve core slide pin and the valve core body jointly defining a second space, the valve core slide pin having a first communicating hole communicating between the second space and the first space, the valve core body having a second communicating hole communicating between the second space and the first main valve port, at least a portion of the first one-way valve being disposed within the second space; a control panel, the control panel being disposed between the valve core body and the first main valve port, and when the valve core assembly is in the closed position, the valve core body and the control panel defining a third space communicating with the first main valve port, and the control panel and the valve body defining a fourth space communicating with the second main valve port; and a first elastic member, the two ends of the first elastic member abutting against the valve core body and the valve body respectively.

[0008] Furthermore, the composite valve also includes a second elastic element, the two ends of which abut against the valve core sliding pin and the drive part respectively, and there is an axial gap between the valve core sliding pin and the drive part when the electromagnetic drive assembly is not powered on.

[0009] Furthermore, the composite valve also includes a first adjusting component, which is disposed in the valve body and connected to the drive unit. When the electromagnetic drive component is powered on, the first adjusting component is separated from the valve body. When the electromagnetic drive component is not powered on, a first throttling orifice is formed between the first adjusting component and the valve body, and the first throttling orifice is located on the flow path from the first space to the second one-way valve.

[0010] Furthermore, the first adjusting component includes a retaining ring, the retaining ring including an annular body and a plurality of first baffles connected to the annular body, the plurality of first baffles being spaced apart along the circumferential direction of the annular body, the annular body being sleeved and fixed to the driving part, when the electromagnetic driving component is powered on, the plurality of first baffles are separated from the valve body, when the electromagnetic driving component is not powered on, the plurality of first baffles are attached to the valve body and a first throttling orifice is formed between two adjacent first baffles.

[0011] Furthermore, the first adjustment assembly also includes a third elastic element, which is fixed to the drive portion and is used to apply pressure to the retaining ring in a direction closer to the valve body.

[0012] Furthermore, the drive unit includes a drive pin and a second adjustment component. The second adjustment component is connected between the drive pin and the valve core sliding pin. When the electromagnetic drive component is powered on, the second adjustment component is separated from the valve body. When the electromagnetic drive component is not powered on, a second throttling orifice is formed between the second adjustment component and the valve body, and the second throttling orifice is located on the flow path from the first space to the second secondary valve orifice.

[0013] Furthermore, the second adjusting component includes an adjusting pin, which includes a pin shaft, an annular connecting plate, and a plurality of second baffles. The two ends of the pin shaft are respectively connected to the drive pin shaft and the valve core pin. The annular connecting plate is sleeved and fixed to the pin shaft. The plurality of second baffles are spaced apart along the circumferential direction of the annular connecting plate. When the electromagnetic drive component is powered on, the plurality of second baffles are separated from the valve body. When the electromagnetic drive component is not powered on, the plurality of second baffles are in contact with the valve body, and a second throttling orifice is formed between two adjacent second baffles.

[0014] According to some embodiments of the present invention, the composite valve further includes a passive valve assembly connected to the valve body, the passive valve assembly and the valve body jointly defining a fifth space, and both the first main valve port and the first auxiliary valve port are adapted to communicate with the first medium cavity through the fifth space.

[0015] According to another embodiment of the present invention, a vibration damper includes a cylinder and the aforementioned composite valve, wherein the first main valve port and the first auxiliary valve port of the composite valve are both in communication with the first medium cavity, and the second main valve port and the second auxiliary valve port of the composite valve are both in communication with the second medium cavity.

[0016] The vibration damper has the same advantages over the prior art as the aforementioned composite valve, and will not be repeated here.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] Figure 1 This is a perspective view of a composite valve according to an embodiment of the present invention;

[0019] Figure 2 This is a front view of the composite valve according to an embodiment of the present invention;

[0020] Figure 3This is a top view of a composite valve according to an embodiment of the present invention;

[0021] Figure 4 This is a cross-sectional view of the composite valve at point AA according to an embodiment of the present invention;

[0022] Figure 5 This is a cross-sectional view of the composite valve at point AA according to another embodiment of the present invention;

[0023] Figure 6 This is a perspective view of the retaining ring according to an embodiment of the present invention;

[0024] Figure 7 This is a perspective view of the adjusting slide pin according to an embodiment of the present invention.

[0025] Figure label:

[0026] Valve body 1, valve body 11, valve seat 12, intermediate ring 13, first main valve hole 141, second main valve hole 142, first auxiliary valve hole 143, second auxiliary valve hole 144, valve body throttling hole 145, valve core assembly 2, valve core body 21, second connecting hole 211, valve core sliding pin 22, first connecting hole 221, control panel 23, first elastic element 24, first check valve 3, first valve core 31, fourth elastic element 32, first guide sleeve 33, second check valve 4, second valve core 41, fifth elastic element 42, plug 43, electromagnetic drive assembly 5, drive part 51, drive pin 511, second adjusting assembly 512, adjusting sliding pin 51 21. Sliding pin 51211, annular connecting plate 51212, second baffle 51213, second throttling orifice 51214, second adjusting shim 5122, housing 52, drive coil 53, first adjusting assembly 6, retaining ring 61, annular body 611, first baffle 612, first throttling orifice 613, third elastic element 62, baffle 63, passive valve assembly 7, sealing area 71, first space 81, second space 82, third space 83, fourth space 84, fifth space 85, sixth space 86, second elastic element 91, first adjusting shim 92, composite valve 10, first medium chamber 20, second medium chamber 30. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the description of this invention, it should be understood that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] The following is combined Figures 1-7 The composite valve 10 and the vibration damper according to embodiments of the present invention are described in detail.

[0032] The composite valve 10 according to an embodiment of the present invention can be used in a vehicle shock absorber. The sealing area 71 on the composite valve 10 can contact and cooperate with the inner wall of the shock absorber cylinder. The composite valve 10 can divide the shock absorber into a first medium chamber 20 and a second medium chamber 30. The first medium chamber 20 can be a compression chamber, and the second medium chamber 30 can be a recovery chamber. The first medium chamber 20 can be located below the second medium chamber 30. Due to the up-and-down movement of the wheel, the composite valve 10 can move up and down in the cylinder along with the piston rod of the shock absorber, thereby alternately generating high pressure in the recovery chamber or the compression chamber. The medium on the high-pressure side will flow to the low-pressure side. The opening degree of the valve core assembly 2 of the composite valve 10 can be controlled by the electromagnetic force of the electromagnetic drive assembly 5, thereby controlling the speed of the medium flow between the compression chamber and the recovery chamber, and realizing the control of the damping force. The medium can be a fluid medium such as oil or compressed gas.

[0033] Reference Figures 1-5 As shown, the composite valve 10 includes: a valve body 1, a valve core assembly 2, a first check valve 3, a second check valve 4, and an electromagnetic drive assembly 5, wherein:

[0034] The valve body 1 has a first main valve port 141, a second main valve port 142, a first auxiliary valve port 143, and a second auxiliary valve port 144. The number of the first main valve port 141, the second main valve port 142, the first auxiliary valve port 143, and the second auxiliary valve port 144 can be one or more. The valve body 1 has a first medium cavity 20 and a second medium cavity 30 outside. The first main valve port 141 and the first auxiliary valve port 143 are both adapted to communicate with the first medium cavity 20, and the second main valve port 142 and the second auxiliary valve port 144 are both adapted to communicate with the second medium cavity 30. The medium can flow through the first main valve port 141 and the first auxiliary valve port 143 between the valve body 1 and the first medium cavity 20, and the medium can flow through the second main valve port 142 and the second auxiliary valve port 144 between the valve body 1 and the second medium cavity 30. The composite valve 10 can control the damping force by adjusting the flow rate of the medium through the valve body 1.

[0035] The valve core assembly 2 is movably disposed within the valve body 1. The valve core assembly 2 and the valve body 1 together define a first space 81, and the first space 81 is connected to the second auxiliary valve hole 144. The medium in the first space 81 can flow to the second medium space through the second auxiliary valve hole 144.

[0036] The first check valve 3 is located within the valve core assembly 2. The first check valve 3 controls the one-way communication from the first main valve port 141 to the first space 81. That is, the medium in the first medium chamber 20 can flow to the first space 81 through the first main valve port 141 and the first check valve 3, but the medium in the first space 81 cannot flow to the first main valve port 141 through the first check valve 3. The second check valve 4 is located within the valve body 1. The second check valve 4 controls the one-way communication from the first space 81 to the first auxiliary valve port 143. That is, the medium in the first space 81 can flow to the first auxiliary valve port 143 through the second check valve 4, but the medium in the first medium chamber 20 cannot flow to the first space 81 through the first auxiliary valve port 143 and the second check valve 4.

[0037] The electromagnetic drive assembly 5 is connected to the valve body 1. The electromagnetic drive assembly 5 has a drive part 51 connected to the valve core assembly 2. The electromagnetic drive assembly 5 drives the valve core assembly 2 to move between the open position and the closed position through the drive part 51, so as to increase or decrease the flow area between the first main valve hole 141 and the second main valve hole 142, thereby adjusting the flow rate of the medium through the valve body 1, and thus realizing the control of the damping force.

[0038] It is understandable that when the valve core assembly 2 is in the closed position, the flow area between the first main valve port 141 and the second main valve port 142 is zero. When the valve core assembly 2 is in the open position, the flow area between the first main valve port 141 and the second main valve port 142 reaches its maximum. When the valve core assembly 2 moves to the open position, the first space 81 is on the pressurized side. The pressure regulation on the pressurized side is divided into two working conditions: compression and restoration. In the compression working condition, the pressure of the first medium chamber 20 is greater than the pressure of the second medium chamber 30. The medium in the first medium chamber 20 on the high-pressure side can flow to the first space 81 through the first main valve port 141 and the first check valve 3, and then flow to the second medium chamber 30 on the low-pressure side through the second auxiliary valve port 144 connected to the first space 81, so that the medium on the back pressure side is discharged to the second medium chamber 30 on the low pressure side, thereby achieving the purpose of regulating the pressure on the back pressure side. During the recovery condition, the pressure in the second medium chamber 30 is greater than the pressure in the first medium chamber 20. The medium in the second medium chamber 30 on the high-pressure side can reach the compressed side through the second auxiliary valve hole 144, and flow to the first medium chamber 20 on the low-pressure side through the second check valve 4 and the second auxiliary valve hole 144, thereby achieving the purpose of adjusting the back pressure side pressure. In this way, the damping force of the compression condition and the recovery condition can be adjusted independently.

[0039] According to the composite valve 10 of the present invention, the valve core assembly 2 and the valve body 1 together define a first space 81. The first main valve port 141 is unidirectionally connected to the first space 81 through the first one-way valve 3, and the first space 81 is unidirectionally connected to the first auxiliary valve port 143 through the second one-way valve 4. The composite valve 10 has a simple structure and can achieve separate control of the pressure of the first space 81 under compression and recovery conditions through the first one-way valve 3 and the second one-way valve 4, so as to independently adjust the damping force under compression and recovery conditions, thereby facilitating the platform-based design and manufacturing of the composite valve 10.

[0040] In some embodiments of the present invention, reference is made to... Figure 4 As shown, the valve core assembly 2 includes: a valve core body 21, a valve core sliding pin 22, a control panel 23, and a first elastic element 24. The valve core sliding pin 22 is connected between the drive unit 51 and the valve core body 21. The drive unit 51 can drive the valve core body 21 to move through the valve core sliding pin 22. The valve core sliding pin 22 and the valve core body 21 together define a second space 82. The valve core sliding pin 22 has a first connecting hole 221 connecting the second space 82 and the first space 81. The valve core body 21 has a second connecting hole 211 connecting the second space 82 and the first main valve hole 141. At least a portion of the first one-way valve 3 is disposed in the second space 82. The first one-way valve 3 in the second space 82 can realize one-way communication from the second connecting hole 211 to the first space 81 by utilizing the pressure difference between the second space 82 and the first main valve hole 141.

[0041] Along the moving direction of valve core assembly 2 (i.e. Figure 4(Up and down direction in the middle), the two ends of the first elastic element 24 abut against the valve core body 21 and the valve body 1 respectively. The first elastic element 24 can provide a force to the valve core body 21 to move to the closed position. The first elastic element 24 can be a spring. The control disk 23 is located between the valve core body 21 and the first main valve hole 141. When the valve core assembly 2 is in the closed position, the valve core body 21 and the control disk 23 define a third space 83 that communicates with the first main valve hole 141. The control disk 23 and the valve body 1 define a fourth space 84 that communicates with the second main valve hole 142. When the valve core assembly 2 moves from the closed position to the open position, the opening force of the valve core assembly 2 mainly comes from the medium pressure in the third space 83 or the fourth space 84 below the valve core assembly 2. In the compression condition, the force-bearing area of ​​the valve core assembly 2 when it is open is the area corresponding to the valve core body 21 and the third space 83, that is, the area of ​​the valve core body 21 close to the control disk 23. The area of ​​one side of the control disc 23 minus the area in contact with the control disc 23 results in the force-bearing area of ​​the valve core assembly 2 when it opens during the recovery condition being equal to the annular area corresponding to the control disc 23 and the fourth space 84, i.e., the area of ​​the control disc 23 minus the area of ​​the first main valve hole 141. Thus, the medium pressure corresponding to the opening of the valve core assembly 2 under the compression condition and the recovery condition can be adjusted separately. For example, this can be achieved by adjusting the contact area between the valve core body 21 and the control disc 23, or by adjusting the diameter of the control disc 23, so as to achieve separate control of the opening pressure of the valve core assembly 2 under the compression condition and the recovery condition. The structure is simple, the adjustment difficulty is low, the reliability is high, and the design change cost is low.

[0042] In addition, the closing force of the valve core assembly 2 is mainly the sum of the elastic force of the first elastic element 24, the medium pressure of the medium in the first space 81 on the back pressure side acting on the valve core assembly 2, and the electromagnetic force transmitted after the drive part 51 contacts the valve core sliding pin 22.

[0043] In some embodiments of the present invention, the valve core slide pin 22 can be detachably connected to the valve core body 21 by thread engagement, so as to facilitate the assembly and maintenance of the first check valve 3 in the second space 82.

[0044] In some embodiments of the present invention, reference is made to... Figure 4 As shown, the first one-way valve 3 includes a first valve core 31 and a fourth elastic element 32. The first valve core 31 can be a spherical structure, and the fourth elastic element 32 can be a spring. The fourth elastic element 32 abuts against the first valve core 31 and the valve core sliding pin 22. The first valve core 31 can move between the second connecting hole 211 and the valve core sliding pin 22 to control the one-way communication from the second connecting hole 211 to the second space 82. Since the second connecting hole 211 is connected to the first main valve hole 141 and the second space 82 is connected to the first space 81, the one-way communication from the first main valve hole 141 to the first space 81 is realized.

[0045] In some embodiments of the present invention, reference is made to... Figure 4 As shown, the first one-way valve 3 also includes a first guide sleeve 33, which can be fixed in the second space 82. The first guide sleeve 33 has a middle guide groove, and the first valve core 31 is at least partially located in the middle guide groove. The middle guide groove can provide guidance and limit for the movement of the first valve core 31, so as to prevent the first valve core 31 from separating from the fourth elastic element 32 when the second space 82 is large, thereby improving the reliability of the first one-way valve 3.

[0046] In some embodiments of the present invention, reference is made to... Figure 4 As shown, the second one-way valve 4 includes a second valve core 41, a fifth elastic element 42, and a plug 43. The second valve core 41 can be a spherical structure, and the fifth elastic element 42 can be a spring. The valve body 1 has a mounting groove for installing the second one-way valve 4. The bottom of the mounting groove is connected to the first auxiliary valve hole 143 through a pressure relief channel. After the fifth elastic element 42 and the second valve core 41 are installed in the mounting groove, the plug 43 can be threaded to the groove opening of the mounting groove so that the plug 43 can be detachably fixed in the valve body 1. The plug 43 facilitates the installation and maintenance of the second valve core 41 and the fifth elastic element 42. The plug 43 has a third connecting hole. The mounting groove can be connected to the first space 81 and the second auxiliary valve hole 144 through the third connecting hole. The second valve core 41 can move in the mounting groove to open or close the third connecting hole, thereby controlling the one-way communication from the first space 81 to the first auxiliary valve hole 143.

[0047] It should be noted that during compression, since the side of the second valve core 41 furthest from the plug 43 is always the high-pressure side, the sealing of the second valve core 41 to the third connecting hole of the plug 43 can be guaranteed. Therefore, the fifth elastic element 42 can be omitted from the second check valve 4, which helps to reduce the axial dimension of the overall composite valve 10 and is more conducive to the mounting arrangement of the composite valve 10 in the vibration damper. In addition, the fifth elastic element 42 can also be replaced with an axially slotted second guide sleeve. The second guide sleeve can be used to guide and limit the second valve core 41 and ensure the passage of the medium.

[0048] Reference Figure 4As shown, the first space 81 and the second auxiliary valve port 144 can always be connected to the second medium chamber 30. During compression, the pressure in the first medium chamber 20 is greater than the pressure in the second medium chamber 30. The second check valve 4 is connected to the high-pressure first medium chamber 20 on the side near the first auxiliary valve port 143, and the other side of the second check valve 4 is connected to the low-pressure second medium chamber 30. The second valve core 41 maintains a seal on the third connecting hole of the plug 43 under the action of the medium pressure. During recovery, the pressure in the second medium chamber 30 is greater than the pressure in the first medium chamber 20. The first check valve 3 is connected to the high-pressure second medium chamber 30 on the side near the first space 81, and the other side of the first check valve 3 is connected to the low-pressure first medium chamber 20. The first valve core 31 maintains a seal on the second connecting hole 211 under the action of the medium pressure. When the medium in the first space 81 is compressed, it is depressurized through the second check valve 4 to the first auxiliary valve port 143.

[0049] Reference Figure 4 and Figure 5 As shown, the valve body 1 also defines a sixth space 86 and a valve body throttling orifice 145. The sixth space 86 is connected to the first space 81. The sixth space 86 is connected to the second auxiliary valve orifice 144 through the valve body throttling orifice 145. The sixth space 86 is unidirectionally connected to the first auxiliary valve orifice 143 through the second one-way valve 4. The valve body throttling orifice 145 has a throttling function.

[0050] In some embodiments of the present invention, reference is made to... Figure 4 As shown, the composite valve 10 also includes a second elastic element 91, which can be a spring. Along the moving direction of the valve core assembly 2, the two ends of the second elastic element 91 abut against the valve core sliding pin 22 and the drive part 51, respectively. When the electromagnetic drive assembly 5 is not energized, there is an axial gap between the valve core sliding pin 22 and the drive part 51. The second elastic element 91 can provide a certain buffering force when the drive part 51 and the valve core sliding pin 22 are in contact. In addition, when the valve core assembly 2 is opened, the second elastic element 91 is compressed. The second elastic element 91 can also provide a part of the closing force when the valve core assembly 2 moves to the closed position.

[0051] In some embodiments of the present invention, reference is made to... Figure 4 As shown, the composite valve 10 also includes a first adjusting shim 92. The end of the second elastic member 91 furthest from the valve core slide pin 22 is abutted against the drive unit 51 via the first adjusting shim 92. The first adjusting shim 92 can adjust the axial clearance between the valve core slide pin 22 and the drive unit 51. Furthermore, the first adjusting shim 92 can be made of a material with low hardness to provide a certain buffering force when the drive unit 51 contacts the valve core slide pin 22, preventing direct impact between the drive unit 51 and the valve core slide pin 22.

[0052] In some embodiments of the present invention, reference is made to... Figure 5As shown, the composite valve 10 also includes a first regulating component 6, which is located inside the valve body 1 and connected to the drive unit 51. When the electromagnetic drive component 5 is powered on, the first regulating component 6 is separated from the valve body 1. At this time, the first regulating component 6 does not perform a throttling function. When the electromagnetic drive component 5 is not powered on, a first throttling orifice 613 is formed between the first regulating component 6 and the valve body 1. The first throttling orifice 613 is located on the flow path from the first space 81 to the second check valve 4. The first throttling orifice 613 can perform a throttling function when the medium flows from the first space 81 to the second check valve 4, so as to realize the function of 0A protection under the recovery condition, so that the electromagnetic drive component 5 can still achieve relatively large damping control when it is not powered on.

[0053] Understandably, when the electromagnetic drive assembly 5 is powered on, the drive unit 51 can drive the first regulating assembly 6 to separate from the valve body 1, and the first throttling orifice 613 loses its throttling function. When the electromagnetic drive assembly 5 is not powered on, no current is passed through the electromagnetic drive assembly 5, and the current on the electromagnetic drive assembly 5 is 0A. The first regulating assembly 6 can be attached to the valve body 1 and form the first throttling orifice 613. Under the restoration condition, the pressure of the second medium chamber 30 is greater than the pressure of the first medium chamber 20. When the valve core assembly 2 is opened, the volume of the first space 81 decreases, and the medium in the first space 81 needs to pass through the first throttling orifice 613 before it can reach the second check valve 4, and then be depressurized to the first medium chamber 20 through the second check valve 4 and the first auxiliary valve orifice 143. The first throttling orifice 613 can keep the pressure on the pressure side of the valve core assembly 2 relatively high, so as to realize the 0A protection function under the restoration condition, thereby improving the reliability, stability and safety of the composite valve 10.

[0054] In some embodiments of the present invention, reference is made to... Figure 5 and Figure 6 As shown, the first adjustment component 6 includes a retaining ring 61, which includes an annular body 611 and a plurality of first baffles 612 connected to the annular body 611. The plurality of first baffles 612 are spaced apart along the circumferential direction of the annular body 611. The annular body 611 is sleeved and fixed to the drive part 51. When the electromagnetic drive component 5 is powered on, the plurality of first baffles 612 are separated from the valve body 1. When the electromagnetic drive component 5 is not powered on, the plurality of first baffles 612 are attached to the valve body 1 and a first throttling hole 613 is formed between two adjacent first baffles 612, so as to realize the function of 0A protection under the restoration condition.

[0055] In some embodiments of the present invention, reference is made to... Figure 5As shown, the first adjusting assembly 6 also includes a third elastic element 62, which is fixed to the driving part 51. The third elastic element 62 is used to apply pressure to the retaining ring 61 in the direction of approaching the valve body 1, so that when the electromagnetic drive assembly 5 is not energized, the first baffle 612 of the retaining ring 61 can fit more tightly with the valve body 1, thereby ensuring the throttling effect of the first throttling orifice 613. Optionally, the third elastic element 62 is an elastic washer or a tower spring.

[0056] Reference Figure 5 As shown, the first adjustment component 6 also includes a baffle 63, which is fixed to the drive part 51. The baffle 63 and the third elastic member 62 are located on both sides of the axial direction of the retaining ring 61 to limit the retaining ring 61 in the axial direction.

[0057] In some embodiments of the present invention, reference is made to... Figure 4 and Figure 5 As shown, the electromagnetic drive assembly 5 includes a housing 52, a drive coil 53, an armature, and a drive unit 51. The drive coil 53 is fixed inside the housing 52, and the armature is fixedly connected to the drive unit 51. When the drive coil 53 is energized, it can drive the drive unit 51 to move through the armature.

[0058] In some embodiments of the present invention, reference is made to... Figure 5 As shown, the drive unit 51 includes a drive pin 511 and a second adjustment component 512. The second adjustment component 512 is connected between the drive pin 511 and the valve core sliding pin 22. When the electromagnetic drive component 5 is powered on, the second adjustment component 512 is separated from the valve body 1. When the electromagnetic drive component 5 is not powered on, a second throttling orifice 51214 is formed between the second adjustment component 512 and the valve body 1. The second throttling orifice 51214 is located on the flow path from the first space 81 to the second auxiliary valve orifice 144. The second throttling orifice 51214 can form a throttling effect when the medium flows from the first space 81 to the second auxiliary valve orifice 144, so as to realize the OA protection function under compression conditions, and enable the electromagnetic drive component 5 to still achieve relatively large damping control when it is not powered on.

[0059] Understandably, when the electromagnetic drive assembly 5 is powered on, the drive pin 511 can drive the second adjustment assembly 512 to separate from the valve body 1, and the second throttling orifice 51214 loses its throttling function. When the electromagnetic drive assembly 5 is not powered on, no current is passed through the electromagnetic drive assembly 5, and the current on the electromagnetic drive assembly 5 is 0A. The second adjustment assembly 512 can be attached to the valve body 1 and form the second throttling orifice 51214 under the action of the second elastic element 91. Under compression conditions, the pressure of the first medium chamber 20 is greater than the pressure of the second medium chamber 30. When the valve core assembly 2 is opened, the volume of the first space 81 decreases. The medium in the first space 81 needs to pass through the second throttling orifice 51214 before it can reach the second auxiliary valve orifice 144 and be depressurized to the second medium chamber 30. The second throttling orifice 51214 can keep the pressure on the compressed side of the valve core assembly 2 at a relatively high pressure, so as to realize the 0A protection function under compression conditions, thereby improving the reliability, stability and safety of the composite valve 10.

[0060] In some embodiments of the present invention, reference is made to... Figure 5 and Figure 7 As shown, the second adjustment component 512 includes an adjustment pin 5121. The adjustment pin 5121 includes a pin shaft 51211, an annular connecting plate 51212, and multiple second baffles 51213. The two ends of the pin shaft 51211 are respectively connected to the drive pin shaft 511 and the valve core pin 22. The annular connecting plate 51212 is sleeved and fixed to the pin shaft 51211. The multiple second baffles 51213 are spaced apart along the circumferential direction of the annular connecting plate 51212. When the electromagnetic drive component 5 is powered on, the multiple second baffles 51213 are separated from the valve body 1. When the electromagnetic drive component 5 is not powered on, the multiple second baffles 51213 are attached to the valve body 1, and a second throttling hole 51214 is formed between two adjacent second baffles 51213 to realize the OA protection function under compression conditions.

[0061] In some embodiments of the present invention, reference is made to... Figure 5 As shown, the second adjustment assembly 512 also includes a second adjustment shim 5122, which is sandwiched between the drive pin 511 and the adjustment slide pin 5121 to adjust the axial clearance between the drive pin 511 and the adjustment slide pin 5121.

[0062] In some embodiments of the present invention, reference is made to... Figures 1-5 As shown, the composite valve 10 also includes a passive valve assembly 7 connected to the valve body 1. The passive valve assembly 7 and the valve body 1 together define a fifth space 85. The first main valve port 141 and the first auxiliary valve port 143 are both adapted to communicate with the first medium cavity 20 through the fifth space 85. The medium can be subjected to a fixed damping force when flowing through the passive valve assembly 7. The passive valve assembly 7 can increase the overall damping force of the composite valve 10, thereby increasing the applicability of the composite valve 10.

[0063] In some embodiments of the present invention, reference is made to... Figure 4 As shown, the valve body 1 includes a valve body 11 and a valve seat 12. The housing 52 of the electromagnetic drive assembly 5 is threaded to one side of the valve body 11, and the valve seat 12 is threaded to the other side of the valve body 11. The passive valve assembly 7 is sleeved and fixed to one end of the valve seat 12 away from the housing 52 of the electromagnetic drive assembly 5.

[0064] Reference Figure 5 As shown, the valve body 1 also includes an intermediate ring 13, which is sleeved on the outside of the drive part 51 and fixedly connected to the valve body 11. When the electromagnetic drive assembly 5 is powered on, the second adjustment assembly 512 is separated from the intermediate ring 13. When the electromagnetic drive assembly 5 is not powered on, a second throttling orifice 51214 is formed between the second adjustment assembly 512 and the intermediate ring 13. The second throttling orifice 51214 is located on the flow path from the first space 81 to the second auxiliary valve orifice 144. The intermediate ring 13 can be threaded into the valve body 11 to facilitate the assembly of other components in the valve body 1.

[0065] The composite valve 10 according to an embodiment of the present invention has a relatively simple structure and principle. It can achieve separate control of the hydraulic pressure in the back pressure chamber during compression and recovery conditions through the first check valve 3 and the second check valve 4. The damping force during compression and recovery conditions can be adjusted independently according to system requirements, facilitating platform-based design and manufacturing. Furthermore, the electromagnetic part (electromagnetic drive assembly 5) and the hydraulic part (valve body 1 and its internal components) of the composite valve 10 are relatively independent. The hydraulic part can have its own internal structural components designed separately, and it is easy to repair and replace, reducing maintenance costs.

[0066] In addition, the first adjusting component 6 and the second adjusting component 512 are optional components. The first adjusting component 6 and the second adjusting component 512 can realize the 0A protection function without affecting the control of other functions of the composite valve 10. At the same time, the threaded connection between the components in the composite valve 10, the sliding connection of the valve core assembly 2, the contact connection of the control panel 23, and the clearance fit of the elastic element have relatively low dimensional requirements. The first valve core 31 of the first one-way valve 3 and the second valve core 41 of the second one-way valve 4 can also be selected with standard ball diameter. The composite valve 10 has relatively low requirements for component precision, is easy to implement as a platform, and the damping adjustment of the composite valve 10 is convenient.

[0067] It should be noted that the threaded connections between the valve core sliding pin 22 and the valve core body 21, the valve body 11 and the outer shell 52 of the electromagnetic drive assembly 5, the valve body 11 and the valve seat 12, the plug 43 and the valve body 11, and the intermediate ring 13 and the valve body 11 can be replaced by press-fitting or welding. In addition, the valve body throttling hole 145 and the pressure relief channel can be directly machined into the valve body 11, or the machined sleeve can be press-fitted or threaded into the valve body 11 for easy processing and debugging.

[0068] According to another embodiment of the present invention, a vibration damper includes: a cylinder and a composite valve 10 as described above. The cylinder has a first medium cavity 20 and a second medium cavity 30 that can be selectively connected. The first main valve port 141 and the first auxiliary valve port 143 of the composite valve 10 are both connected to the first medium cavity 20, and the second main valve port 142 and the second auxiliary valve port 144 of the composite valve 10 are both connected to the second medium cavity 30.

[0069] According to an embodiment of the present invention, the valve core assembly 2 and the valve body 1 together define a first space 81. The first main valve port 141 is unidirectionally connected to the first space 81 through the first one-way valve 3, and the first space 81 is unidirectionally connected to the first auxiliary valve port 143 through the second one-way valve 4. The pressure of the first space 81 under compression and recovery conditions can be controlled separately through the first one-way valve 3 and the second one-way valve 4, so as to independently adjust the damping force under compression and recovery conditions, thereby facilitating the platform-based design and manufacturing of the composite valve 10 and the vibration damper.

[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0071] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A composite valve characterized by, The utility model relates to a valve body (1) with a first main valve hole (141), a second main valve hole (142), a first auxiliary valve hole (143) and a second auxiliary valve hole (144), a first medium cavity (20) and a second medium cavity (30) outside the valve body (1), the first main valve hole (141) and the first auxiliary valve hole (143) are adapted to communicate with the first medium cavity (20), the second main valve hole (142) and the second auxiliary valve hole (144) are adapted to communicate with the second medium cavity (30), a valve core assembly (2) is movably arranged in the valve body (1), the valve core assembly (2) and the valve body (1) jointly define a first space (81), and the first space (81) communicates with the second auxiliary valve hole (144), a first check valve (3) is arranged in the valve core assembly (2), the first check valve (3) is used for controlling the one-way communication from the first main valve hole (141) to the first space (81), a second check valve (4) is arranged in the valve body (1), the second check valve (4) is used for controlling the one-way communication from the first space (81) to the first auxiliary valve hole (143), an electromagnetic drive assembly (5) is connected with the valve body (1), the electromagnetic drive assembly (5) has a drive part (51) connected with the valve core assembly (2), the electromagnetic drive assembly (5) drives the valve core assembly (2) to move between an open position and a closed position through the drive part (51) to increase or reduce the flow area between the first main valve hole (141) and the second main valve hole (142), the valve core assembly (2) comprises a valve core body (21) and a valve core sliding pin (22), the valve core sliding pin (22) is connected between the drive part (51) and the valve core body (21), the valve core sliding pin (22) and the valve core body (21) jointly define a second space (82), the valve core sliding pin (22) has a first communication hole (221) communicating the second space (82) and the first space (81), the valve core body (21) has a second communication hole (211) communicating the second space (82) and the first main valve hole (141), at least part of the first check valve (3) is arranged in the second space (82), a control disc (23) is arranged between the valve core body (21) and the first main valve hole (141), and when the valve core assembly (2) is in the closed position, the valve core body (21) and the control disc (23) define a third space (83) communicating with the first main valve hole (141), and the control disc (23) and the valve body (1) define a fourth space (84) communicating with the second main valve hole (142). ​ ​ ​ ​ ​ ​ ​ A first elastic member (24) has two ends abutting against the valve core body (21) and the valve body (1) respectively.

2. The composite valve of claim 1, wherein A second elastic member (91) has two ends abutting against the valve core sliding pin (22) and the driving part (51) respectively, and an axial gap is formed between the valve core sliding pin (22) and the driving part (51) when the electromagnetic driving assembly (5) is not powered.

3. The composite valve of claim 1, wherein A first adjusting assembly (6) is arranged in the valve body (1) and connected with the driving part (51), the first adjusting assembly (6) is separated from the valve body (1) when the electromagnetic driving assembly (5) is powered, a first throttling hole (613) is formed between the first adjusting assembly (6) and the valve body (1) when the electromagnetic driving assembly (5) is not powered, and the first throttling hole (613) is located on the flow path from the first space (81) to the second one-way valve (4).

4. The composite valve of claim 3, wherein The first adjusting assembly (6) comprises a blocking ring (61) comprising an annular body (611) and a plurality of first baffles (612) connected with the annular body (611), the plurality of first baffles (612) are arranged at intervals along the circumferential direction of the annular body (611), the annular body (611) is fixedly sleeved on the driving part (51), the plurality of first baffles (612) are separated from the valve body (1) when the electromagnetic driving assembly (5) is powered, and the plurality of first baffles (612) are in close contact with the valve body (1) and the first throttling hole (613) is formed between adjacent two first baffles (612) when the electromagnetic driving assembly (5) is not powered.

5. The composite valve of claim 4, wherein, The first adjusting assembly (6) further comprises a third elastic member (62) fixedly arranged on the driving part (51), and the third elastic member (62) is used for applying pressure to the blocking ring (61) in the direction close to the valve body (1).

6. The composite valve of claim 3, wherein The driving part (51) comprises a driving pin shaft (511) and a second adjusting assembly (512) connected between the driving pin shaft (511) and the valve core sliding pin (22), the second adjusting assembly (512) is separated from the valve body (1) when the electromagnetic driving assembly (5) is powered, a second throttling hole (51214) is formed between the second adjusting assembly (512) and the valve body (1) when the electromagnetic driving assembly (5) is not powered, and the second throttling hole (51214) is located on the flow path from the first space (81) to the second secondary valve hole (144).

7. The composite valve of claim 6, wherein The second adjusting assembly (512) comprises an adjusting slide pin (5121), the adjusting slide pin (5121) comprises a slide pin shaft (51211), an annular connecting plate (51212) and a plurality of second baffles (51213), two ends of the slide pin shaft (51211) are connected with the drive pin shaft (511) and the valve core slide pin (22) respectively, the annular connecting plate (51212) is sleeved and fixed on the slide pin shaft (51211), and the plurality of second baffles (51213) are arranged at intervals along the circumferential direction of the annular connecting plate (51212); when the electromagnetic drive assembly (5) is powered on, the plurality of second baffles (51213) are separated from the valve body (1); when the electromagnetic drive assembly (5) is not powered on, the plurality of second baffles (51213) are attached to the valve body (1), and the second throttling hole (51214) is formed between adjacent two second baffles (51213).

8. The composite valve according to any one of claims 1-7, characterized in that Further comprising a passive valve assembly (7) connected with the valve body (1), the passive valve assembly (7) and the valve body (1) jointly define a fifth space (85), and the first main valve hole (141) and the first auxiliary valve hole (143) are adapted to communicate with the first medium cavity (20) through the fifth space (85).

9. A damper characterized by, Further comprising: a cylinder body having a first medium cavity (20) and a second medium cavity (30) which can be selectively communicated; a composite valve according to any one of claims 1-8, the first main valve hole (141) and the first auxiliary valve hole (143) of the composite valve are communicated with the first medium cavity (20), and the second main valve hole (142) and the second auxiliary valve hole (144) of the composite valve are communicated with the second medium cavity (30).

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