Valve device, damping controller, suspension damping control system, and vehicle

Abstract

The application discloses a valve device, a damping controller, a suspension damping control system and a vehicle. The valve device comprises a first valve body, a pilot valve plug and a first elastic member. The first valve body has a pilot passage. The pilot valve plug is arranged on one side of the first valve body and is adapted to open or block the pilot passage. One end of the first elastic member abuts against the pilot valve plug to generate a pre-tightening force between the pilot valve plug and the first valve body. According to the valve device, the first elastic member is arranged, so that the fluctuation of the pilot valve plug caused by the medium is small, the influence of the medium on the position of the pilot valve plug and the first valve body is reduced, and the damping force in the valve device is stable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of damping controller, in particular to a valve device, a damping controller, a suspension damping control system and a vehicle. BACKGROUND

[0002] In the related art, the valve device is applied in the damping controller. When the valve device is not powered or powered at a low current, the internal oil fluctuates greatly, which causes the positions of the pilot valve plug and the first valve body in the valve device to change with the oil fluctuation, resulting in unstable system damping force. SUMMARY

[0003] The present application aims to at least solve one of the above technical problems in the prior art to some extent. To this end, the present application provides a valve device capable of controlling the position fluctuation of the pilot valve plug and the first valve body.

[0004] The present application also provides a damping controller with the valve device.

[0005] The present application also provides a suspension damping control system with the damping controller.

[0006] The present application also provides a vehicle with the suspension damping control system.

[0007] The valve device according to an embodiment of the present application comprises a first channel, a second channel, a first valve body, a pilot valve plug, a driving assembly and a first elastic member. The first valve body is movable to adjust the flow damping between the first channel and the second channel. The first valve body has a pilot channel, which is in communication with the second channel. The pilot valve plug is arranged on one side of the first valve body and is adapted to open or block the pilot channel. When the pilot valve plug opens the pilot channel, the pilot channel can be communicated to the first channel through a third channel. The driving assembly is used to drive the pilot valve plug to move. One end of the first elastic member is abutted against the pilot valve plug to reduce the fluctuation caused by the medium to the pilot valve plug.

[0008] The valve device according to an embodiment of the present application has the first elastic member arranged therein, so that the fluctuation caused by the medium to the pilot valve plug is small, the influence of the medium on the positions of the pilot valve plug and the first valve body is reduced, and the damping force in the valve device is stable.

[0009] According to some embodiments of the present application, one end of the first elastic member is abutted against the pilot valve plug to exert a force on the pilot valve plug towards the first valve body.

[0010] According to some embodiments of the present application, one end of the first elastic member abuts against the pilot valve plug to apply a force to the pilot valve plug away from the first valve body.

[0011] According to some embodiments of the present application, the valve device further comprises a first valve seat, the first valve body being movable relative to the first valve seat.

[0012] According to some embodiments of the present application, one of the first valve body and the first valve seat has a guide cavity, and the other is at least partially inserted into the guide cavity to guide the one, the first valve body being movable relative to the first valve seat in a direction approaching or away from the pilot valve plug.

[0013] According to some embodiments of the present application, the other end of the first elastic member abuts against the first valve seat, the first elastic member applying a force to the pilot valve plug away from the first valve body.

[0014] According to some embodiments of the present application, the valve device further comprises a valve housing, the first valve body being movable relative to the valve housing, the valve housing being provided with a medium outlet configured as at least a part of the first passage, the valve housing being provided with a pressure relief chamber, the medium outlet being in communication with the pressure relief chamber.

[0015] According to some embodiments of the present application, the valve device further comprises a base valve seat, the drive assembly being disposed on a side of the base valve seat facing away from the pilot valve plug, the valve housing being connected to the base valve seat, the base valve seat being provided with a base valve hole, a first chamber being formed between the first valve seat and the base valve seat, the base valve hole being in communication with the first chamber and the pressure relief chamber, the base valve hole and the first chamber being configured as at least a part of the third passage.

[0016] According to some embodiments of the present application, a valve passage is formed in the valve housing, the valve passage being configured as at least a part of the second passage, the pressure relief chamber being configured as at least a part of the first passage, the first valve body being movable to adjust the communication damping between the valve passage and the pressure relief chamber.

[0017] According to some embodiments of the present application, a containing cavity is formed between the first valve seat and the first valve body, the pilot passage being in communication with the containing cavity.

[0018] The first valve body is provided with a first valve hole, the valve passage being in communication with the containing cavity through the first valve hole.

[0019] According to some embodiments of the present application, the valve device further comprises a second elastic member, the second elastic member is arranged in the accommodating cavity, axially to the first valve body, one end of the second elastic member abuts against the first valve body, and the other end of the second elastic member abuts against the first valve seat.

[0020] According to some embodiments of the present application, the pilot passage comprises an axial passage and a radial passage, the pilot valve plug is used to selectively block the axial passage, the radial passage is connected with the axial passage, and the radial passage extends to the accommodating cavity along the radial direction of the first valve body.

[0021] According to some embodiments of the present application, the inner peripheral wall of the valve housing is formed with a protruding structure extending in the radial direction, the protruding structure is formed with the valve passage, the first valve body selectively abuts against or is separated from the protruding structure, and the pressure relief chamber is adapted to be communicated with the valve passage through a gap between the first valve body and the protruding structure.

[0022] According to some embodiments of the present application, the valve device further comprises a second valve assembly, the second valve assembly comprises a second valve body, the second valve body is mounted to the valve housing, and the second valve body has a second cavity, and the communication damping between the second cavity and the valve passage is adjustable.

[0023] According to some embodiments of the present application, the second valve assembly comprises a first valve piece, the second valve body has a fourth passage for communicating the second cavity with the valve passage, and the first valve piece can block or open the fourth passage.

[0024] According to some embodiments of the present application, the second valve body has a fifth passage and a sixth passage, the second cavity is communicated with the fifth passage, and the sixth passage is selectively communicated with the second cavity.

[0025] According to some embodiments of the present application, the second valve assembly further comprises a second valve piece, the second valve piece can block or open the sixth passage.

[0026] According to some embodiments of the present application, the second valve assembly further comprises a third elastic member, the third elastic member is arranged in the second cavity, and the third elastic member is used to apply an elastic force to the second valve piece to move in the direction of blocking the sixth passage.

[0027] According to some embodiments of the present application, the second valve body comprises a second valve seat and a second valve body, the second valve seat is mounted to the valve housing, and the fourth passage is formed on the second valve seat; and the second valve body is mounted to the second valve seat, and the fifth passage and the sixth passage are formed on the second valve body.

[0028] According to some embodiments of the present application, the sixth passage is separated from the fifth passage in the radial direction of the second valve body.

[0029] According to some embodiments of the present application, the valve device further comprises a push rod connected to a side of the pilot valve plug away from the first valve body, and the driving assembly is configured to drive the push rod to move towards the first valve body to drive the pilot valve plug to move.

[0030] According to some embodiments of the present application, the pilot valve plug has a push rod groove, and one end of the push rod extends into the push rod groove.

[0031] According to some embodiments of the present application, the valve device further comprises a base valve seat, and the driving assembly is disposed on a side of the base valve seat away from the pilot valve plug, the base valve seat has a push rod hole, and the push rod passes through the push rod hole.

[0032] According to some embodiments of the present application, the other end of the first elastic member abuts against the base valve seat, and the first elastic member applies a force to the pilot valve plug towards the first valve body.

[0033] According to some embodiments of the present application, the driving assembly is located on a side of the pilot valve plug away from the first valve body, the driving assembly comprises a coil and a magnetic core, the magnetic core is fixedly connected with the push rod, and the coil is configured to drive the magnetic core to move.

[0034] According to some embodiments of the present application, the driving assembly further comprises a fourth elastic member and a fifth elastic member, the fourth elastic member abuts against the magnetic core to apply a force to the magnetic core towards the pilot valve plug, and the fifth elastic member abuts against the magnetic core to apply a force to the magnetic core away from the pilot valve plug.

[0035] According to some embodiments of the present application, the pilot valve plug comprises a valve plug body and a valve plug skirt connected with the valve plug body, the valve plug skirt extends outward in the radial direction of the valve plug body, the valve plug body is adapted to open or block the pilot passage, and one end of the first elastic member abuts against the valve plug skirt.

[0036] The damping controller according to the second aspect of the present application comprises a controller body, a first valve device and a second valve device, the controller body has a first cavity and a second cavity, the first cavity and the second cavity are in communication; the first valve device is installed in the first cavity, the second valve device is installed in the second cavity, the first valve device and the second valve device are the valve device described above, the medium outlet of the first valve device and the sixth channel are both in communication with the first cavity, the medium outlet of the second valve device and the sixth channel are both in communication with the second cavity, the fifth channel of the first valve device is used for connecting with a first device, and the fifth channel of the second valve device is used for connecting with a second device, so as to adjust the communication damping between the first device and the second device.

[0037] The damping controller according to the present application has the valve device provided with the first elastic member, so that the fluctuation of the pilot valve plug caused by the medium is small, the influence of the medium on the position of the pilot valve plug and the first valve body is reduced, the damping force in the valve device is stable, and then the damping force in the damping controller is stable.

[0038] According to some embodiments of the present application, the controller body further has a third cavity, and the first cavity and the second cavity are in communication through the third cavity.

[0039] The suspension damping control system according to the third aspect of the present application comprises the damping controller described above, the first device is a central control cylinder, and the second device is a shock absorber.

[0040] The suspension damping control system according to the present application has the valve device of the damping controller provided with the first elastic member, so that the fluctuation of the pilot valve plug caused by the medium is small, the influence of the medium on the position of the pilot valve plug and the first valve body is reduced, the damping force in the valve device is stable, and then the damping force of the suspension damping control system is stable.

[0041] According to some embodiments of the present application, the suspension damping control system further comprises a stiffness conversion valve, and the stiffness conversion valve and the central control cylinder are connected with the fifth channel of the first valve device.

[0042] According to some embodiments of the present application, the suspension damping control system further comprises an accumulator, and the accumulator and the shock absorber are connected with the fifth channel of the second valve device.

[0043] The vehicle according to the fourth aspect of the present application comprises the suspension damping control system described above.

[0044] According to the vehicle provided by the embodiment of the present application, the valve device of the suspension damping control system is provided with the first elastic member, so that the fluctuation of the pilot valve plug caused by the medium is small, the influence of the medium on the position of the pilot valve plug and the first valve body is reduced, the damping force in the valve device is stable, and then the damping force of the suspension damping control system is stable.

[0045] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 is a cross-sectional view of a valve device in a first state according to an embodiment of the present application;

[0047] Figure 2 is Figure 1 a cross-sectional view of the valve device in a second state shown in FIG. 1;

[0048] Figure 3 is Figure 1 a perspective view of a pilot valve plug of the valve device shown in FIG. 1;

[0049] Figure 4 is Figure 1 a cross-sectional view of the pilot valve plug of the valve device shown in FIG. 1;

[0050] Figure 5 is a cross-sectional view of a valve device in a first state according to an embodiment of the present application;

[0051] Figure 6 is Figure 5 a cross-sectional view of the valve device in a second state shown in FIG. 1;

[0052] Figure 7 is Figure 5 a perspective view of a pilot valve plug of the valve device shown in FIG. 1;

[0053] Figure 8 is Figure 5 a cross-sectional view of the pilot valve plug of the valve device shown in FIG. 1;

[0054] Figure 9 is a perspective view of a first elastic member;

[0055] Figure 10 is a cross-sectional view of a first valve assembly;

[0056] Figure 11 is a cross-sectional view of a damping controller according to an embodiment of the present application;

[0057] Figure 12 is a flow path in the damping controller when the first valve device and the second valve device are not powered and the piston rod of the shock absorber is restored.

[0058] Figure 13 is a schematic diagram of flow paths in the damper controller when the first and second valve devices are de-energized and the piston rod of the damper is compressed;

[0059] Figure 14 is a schematic diagram of flow paths in the damper controller when the first and second valve devices are energized and the piston rod of the damper is retracted;

[0060] Figure 15 is a schematic diagram of flow paths in the damper controller when the first and second valve devices are energized and the piston rod of the damper is retracted;

[0061] Figure 16 is a schematic diagram of flow paths in the damper controller when the first and second valve devices are energized and the piston rod of the damper is compressed;

[0062] Figure 17 is a schematic diagram of flow paths in the damper controller when the first and second valve devices are energized and the piston rod of the damper is compressed;

[0063] Figure 18 is a schematic diagram of a suspension damper control system according to an embodiment of the application;

[0064] Figure 19 is a schematic diagram of a vehicle according to an embodiment of the application.

[0065] Reference signs:

[0066] Valve device 10, first valve device 10a, second valve device 10b, first valve assembly 1, first valve body 11, pilot passage 111, axial passage 1111, radial passage 1112, first valve hole 112, first valve seat 12, accommodating cavity 13, second elastic member 14, first sealing ring 15, pilot valve plug 2, plug body 21, push rod guide surface 211, elastic member guide surface 212, elastic member abutting surface 213, sealing surface 214, plug skirt 22, push rod groove 23, first elastic member 3, push rod 4, base valve seat 5, base valve hole 51, first chamber 52, valve housing 6, medium outlet 61, valve passage 62, protruding structure 63, pressure relief chamber 64, second valve assembly 7, second valve body 71, second valve seat 711, fourth passage 7111, second valve body 712, fifth passage 7121, sixth passage 7122, second chamber 713, first valve piece 72, second valve piece 73, third elastic member 74, drive assembly 8, coil 81, magnetic core 82, fourth elastic member 83, fifth elastic member 84, inner housing 851, outer housing 852, first guide sleeve 861, second guide sleeve 862, locking sleeve 87, core cover 88, magnetic isolation ring 89;

[0067] Damping controller 100, first cavity 101, second cavity 102, third cavity 103, fourth cavity 104, fifth cavity 105, central control cylinder interface 106, stiffness conversion valve interface 107, vibration damper interface 108, accumulator interface 109, controller body 110;

[0068] Suspension damping control system 1000;

[0069] 10,000 vehicles. Detailed Implementation

[0070] The embodiments of this application are described in detail below. Examples of these embodiments are shown 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 this application, and should not be construed as limiting this application.

[0071] In the description of this application, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0072] The following is combined with Figures 1-19 The present application describes in detail the valve device 10, damping controller 100, suspension damping control system 1000, and vehicle 10000 according to embodiments thereof.

[0073] Reference Figures 1-2 , Figures 5-6 As shown, the valve device 10 according to an embodiment of this application may include: a first channel, a second channel, a first valve body 11, a pilot valve plug 2, a drive assembly 8, and a first elastic element 3.

[0074] The first valve body 11 is movable to adjust the flow damping between the first channel and the second channel. Specifically, by changing the position of the first valve body 11, the communication area between the first channel and the second channel is adjustable, thereby changing the communication damping between the first channel and the second channel, for example, increasing or decreasing the flow damping between the first channel and the second channel. The first valve body 11 has a pilot channel 111, which is connected to the second channel.

[0075] The pilot valve plug 2 is arranged on one side of the first valve body 11, and the pilot valve plug 2 is suitable for opening or blocking the pilot passage 111. When the pilot valve plug 2 opens the pilot passage 111, the pilot passage 111 can be communicated to the first passage through the third passage, so that the medium in the second passage can reach the third passage through the pilot passage 111, and then enter the first passage from the third passage; when the pilot valve plug 2 closes the pilot passage 111, the pilot passage 111 cannot be communicated to the first passage through the third passage.

[0076] The driving assembly 8 is used for driving the pilot valve plug 2 to move, and one end of the first elastic member 3 abuts against the pilot valve plug 2, so as to reduce the fluctuation of the pilot valve plug 2 caused by the medium. Specifically, the first elastic member 3 applies an elastic force to the pilot valve plug 2, so as to stabilize the position of the pilot valve plug 2 as much as possible, so that the fluctuation of the pilot valve plug 2 caused by the medium is small.

[0077] For example, when the valve device 10 is applied to the damping controller 100, and the medium flowing in the valve device 10 is oil, when the oil flow resistance fluctuates greatly in the damping controller 100, the elastic force applied by the first elastic member 3 to the pilot valve plug 2 controls the fluctuation of the pilot valve plug 2 in the axial direction, and since the pilot valve plug 2 is suitable for contacting or separating from the first valve body 11, the fluctuation of the first valve body 11 in the axial direction is reduced under the condition that the fluctuation of the pilot valve plug 2 in the axial direction is small, so that the damping force of the system is stable, and the stable requirement of the shock absorber of the vehicle 10000 is met.

[0078] It can be understood that the "axial direction" mentioned above refers to the arrangement direction of the pilot valve plug 2 and the first valve body 11, that is, the up-down direction shown in FIGS. 1 to 3. Figures 1-2 、 Figures 5-6

[0079] According to the valve device 10 of the embodiment of the present application, the first elastic member 3 is arranged, so that the fluctuation of the pilot valve plug 2 caused by the medium is small, the influence of the medium on the position of the pilot valve plug 2 and the first valve body 11 is reduced, and the damping force in the valve device 10 is stable. When the valve device 10 is applied to the damping controller 100 and the damping controller 100 is applied to the suspension damping control system 1000, the damping force of the system is stable.

[0080] Optionally, the first elastic member 3 can be a spring, a wave spring or the like. For example, as shown in FIGS. 1 to 3, the first elastic member 3 is a spring. Figures 1-2 、 Figures 5-6 、 Figure 9

[0081] In some embodiments of the present application, refer to Figures 1-2 ​​As shown, one end of the first elastic member 3 abuts against the pilot valve plug 2 to apply an action force to the pilot valve plug 2 away from the first valve body 11. The elastic force of the first elastic member 3 is applied to the pilot valve plug 2 to reduce the fluctuation of the oil to the pilot valve plug 2. The pilot valve plug 2 pushes the first valve body 11 to move axially downward. The downward force of the first elastic member 3 applied to the first valve body 11 interacts with the upward flow damping force of the system oil, improves the fluctuation amplitude of the damping force of the system, stabilizes the damping force of the system, and meets the stable requirement of the shock absorber indicator force value of the vehicle 10000.

[0082] In some embodiments of the present application, refer to Figures 5-6 As shown, one end of the first elastic member 3 abuts against the pilot valve plug 2 to apply an action force to the pilot valve plug 2 away from the first valve body 11. The elastic force of the first elastic member 3 is applied to the pilot valve plug 2 to reduce the fluctuation of the oil to the pilot valve plug 2. The pilot valve plug 2 pushes the first valve body 11 to move axially downward. The downward force of the first elastic member 3 applied to the first valve body 11 interacts with the upward flow damping force of the system oil, improves the fluctuation amplitude of the damping force of the system, stabilizes the damping force of the system, and meets the stable requirement of the shock absorber indicator force value of the vehicle 10000.

[0083] In some embodiments of the present application, refer to Figures 1-2 、 Figures 5-6 As shown, the valve device 10 further comprises a first valve seat 12, and the first valve body 11 is movable relative to the first valve seat 12. The oil in the system is used to drive the first valve body 11 to move. For example, the oil below the first valve body 11 can push the first valve body 11 to move axially.

[0084] In some embodiments of the present application, refer to Figures 1-2 、 Figures 5-6 、 Figure 10 As shown, one of the first valve body 11 and the first valve seat 12 has a guide cavity, and the other is at least partially inserted into the guide cavity to guide one of them. The first valve body 11 is movable relative to the first valve seat 12 in the direction close to or away from the pilot valve plug 2. The design of the guide cooperation between the first valve body 11 and the first valve seat 12 reduces the shaking and deviation of the first valve body 11, improves the stability and accuracy of the first valve body 11 during movement, and thus improves the overall stability and reliability of the first valve assembly 1. In Figures 1-2 、 Figures 5-6 、 Figure 10 In some embodiments of the present application, refer to

[0085] In some embodiments of the present application, refer to Figures 1-2 、 Figures 5-6 、 Figure 10As shown, the first sealing ring 15 is arranged at the guide matching position between the first valve body 11 and the first valve seat 12. Thus, the first sealing ring 15 can be tightly matched on the matching surface between the first valve body 11 and the first valve seat 12, effectively preventing medium leakage and ensuring stable operation of the valve device 10. The first sealing ring 15 also plays a guiding role for the first valve body 11. The first sealing ring 15 can effectively improve the sliding damping to suppress the chattering of the first valve body 11 after opening.

[0086] In some embodiments of the present application, referring to Figures 5-6 As shown, one end of the first elastic member 3 abuts against the pilot valve plug 2, and the other end of the first elastic member 3 abuts against the first valve seat 12. The first elastic member 3 applies a force to the pilot valve plug 2 away from the first valve body 11. For example, in Figures 5-6 , the first elastic member 3 applies an upward force to the pilot valve plug 2 to reduce the fluctuation of the oil to the pilot valve plug 2.

[0087] In some embodiments of the present application, referring to Figures 1-2 , Figures 5-6 As shown, the valve device 10 further comprises a valve housing 6. The first valve body 11 is movable relative to the valve housing 6, and the first valve seat 12 is fixed relative to the valve housing 6. The valve housing 6 is provided with a medium outlet 61 configured as at least a part of the first channel. The valve housing 6 is provided with a pressure relief chamber 64. The medium outlet 61 is in communication with the pressure relief chamber 64. The medium outlet 61 is also in communication with the outside space of the valve device 10. The oil at the pressure relief chamber 64 can flow out of the valve device 10 through the medium outlet 61.

[0088] In some embodiments of the present application, referring to Figures 1-2 , Figures 5-6 As shown, the valve device 10 further comprises a base valve seat 5. The drive assembly 8 is arranged on the side of the base valve seat 5 away from the pilot valve plug 2. The valve housing 6 is connected with the base valve seat 5. The first valve seat 12 is connected with the base valve seat 5. The base valve seat 5 is provided with a base valve hole 51. The first valve seat 12 and the base valve seat 5 form a first chamber 52. The base valve hole 51 communicates the first chamber 52 with the pressure relief chamber 64. The oil at the first chamber 52 can flow to the pressure relief chamber 64 through the base valve hole 51, and then flow out of the valve device 10 through the medium outlet 61. The base valve hole 51 and the first chamber 52 are configured as at least a part of the third channel. When the pilot valve plug 2 opens the pilot channel 111, the pilot channel 111 can be communicated to the pressure relief chamber 64 through the first chamber 52 and the base valve hole 51. Thus, the medium in the second channel can reach the first chamber 52 through the pilot channel 111. The oil at the first chamber 52 can flow to the pressure relief chamber 64 through the base valve hole 51, and then flow out of the valve device 10 through the medium outlet 61.

[0089] In some embodiments of the present application, referring to Figures 1-2 , Figures 5-6 , a valve passage 62 is formed in the valve housing 6, the valve passage 62 is configured as at least a part of the second passage, a pressure relief chamber 64 is configured as at least a part of the first passage, and the first valve body 11 is movable to adjust the communication damping between the valve passage 62 and the pressure relief chamber 64. When the first valve body 11 is moved, the size of the overflow valve port of the first valve body 11 can be changed, thereby changing the communication damping between the valve passage 62 and the pressure relief chamber 64.

[0090] In some embodiments of the present application, referring to Figures 1-2 , Figures 5-6 , Figure 10 , a containing cavity 13 is formed between the first valve seat 12 and the first valve body 11, the pilot passage 111 is in communication with the containing cavity 13, and the oil in the containing cavity 13 can flow into the pilot passage 111.

[0091] The first valve body 11 is provided with a first valve hole 112, and the valve passage 62 is communicated to the containing cavity 13 through the first valve hole 112. The oil at the valve passage 62 can flow into the containing cavity 13 through the first valve hole 112, and the oil in the containing cavity 13 can further flow into the pilot passage 111. The containing cavity 13 is used to realize the pressure balance between the pilot passage 111 and the valve passage 62. If the pilot passage 111 is directly communicated to the valve passage 62 without the containing cavity 13, the upper and lower air pressures of the first valve body 11 will be unbalanced.

[0092] In some embodiments of the present application, referring to Figures 1-2 , Figures 5-6 , Figure 10 , the valve device 10 further comprises a second elastic member 14, the second elastic member 14 is arranged in the containing cavity 13 and in the axial direction of the first valve body 11, one end of the second elastic member 14 abuts against the first valve body 11, and the other end of the second elastic member 14 abuts against the first valve seat 12. Specifically, the first valve body 11, the first valve seat 12 and the second elastic member 14 constitute a first valve assembly 1, the second elastic member 14 abuts against the first valve body 11 and the first valve seat 12, and the second elastic member 14 provides an elastic force for the first valve body 11, which makes the first valve body 11 and the first valve seat 12 always keep a tendency of moving away from each other.

[0093] Optionally, the second elastic member 14 can be a spring, a wave spring or the like, for example Figures 1-2 , Figures 5-6 , Figure 10 , the second elastic member 14 is a spring.

[0094] In some embodiments of the present application, referring to Figures 1-2 , Figures 5-6 ,Figure 10 As shown, the pilot channel 111 includes an axial channel 1111 and a radial channel 1112. The pilot valve plug 2 is used to selectively block the axial channel 1111. The radial channel 1112 is connected to the axial channel 1111 and extends radially along the first valve body 11 to the receiving cavity 13. In other words, the medium can reach the radial channel 1112 through the receiving cavity 13, and flow from the radial channel 1112 to the axial channel 1111. When the pressure of the medium in the axial channel 1111 does not reach the second pressure threshold, the pilot valve plug 2 blocks the axial channel 1111. When the pressure of the medium in the axial channel 1111 reaches the second pressure threshold, the pilot valve plug 2 opens the axial channel 1111. At this time, the medium in the receiving cavity 13 can flow to the first chamber 52 through the radial channel 1112 and the axial channel 1111, and then flow to the pressure relief chamber 64 through the base valve hole 51.

[0095] The arrangement of radial channel 1112 and axial channel 1111 improves the flow flexibility of the medium. By optimizing the flow path of the medium, it enhances the stability of the medium during the flow process, helping to reduce fluctuations and vibrations, and lowering noise and wear. The arrangement of radial channel 1112 reduces the axial dimension of the valve device 10. The axial channel 1111 and radial channel 1112 are formed within the first valve body 11, making full use of the internal space of the first valve body 11.

[0096] Optionally, there may be one, two, three or more radial channels 1112. For example, there may be four radial channels 1112 arranged in a ring.

[0097] In some embodiments of this application, reference is made to Figures 1-2 , Figures 5-6 As shown, a radially extending protruding structure 63 is formed on the inner peripheral wall of the valve housing 6. The protruding structure 63 forms a valve passage 62. The first valve body 11 is selectively attached to or separated from the protruding structure 63. The pressure relief chamber 64 and the valve passage 62 are adapted to communicate through the gap between the first valve body 11 and the protruding structure 63. Specifically, the protruding structure 63 extends radially toward the axis of the first valve body 11 relative to the inner peripheral wall of the valve housing 6. The first valve body 11 is located above the protruding structure 63. The gap between the first valve body 11 and the protruding structure 63 is an overflow valve port with an axial dimension of L. The elastic force of the first elastic element 3 controls the axial fluctuation of the pilot valve plug 2, thereby reducing the axial displacement fluctuation of the first valve body 11, that is, reducing the axial dimensional fluctuation of the overflow valve port, stabilizing the damping force of the system, and meeting the stable damping force requirement of the shock absorber of vehicle 10000.

[0098] In some embodiments, the pressure relief chamber 64 and the valve passage 62 are in a normally open state, that is, the first valve body 11 moves up and down to adjust the damping magnitude, and even when the first valve body 11 abuts against the protruding structure 63, the pressure relief chamber 64 and the valve passage 62 are connected with a small flow rate.

[0099] Figure 1 , Figure 3 In the middle, the first valve body 11 is attached to the protruding structure 63. The gap between the first valve body 11 and the protruding structure 63 is small, and the medium flow resistance between the first valve body 11 and the protruding structure 63 is large, which makes the flow damping between the first channel and the second channel large. Figure 2 , Figure 4 In the middle, there is a gap between the first valve body 11 and the protruding structure 63, which forms an overflow valve port. The medium flow resistance between the first valve body 11 and the protruding structure 63 is relative to... Figure 1 , Figure 3 The pressure is smaller in the state shown, resulting in less flow resistance between the first and second channels. The medium in the valve channel 62 can flow through the overflow valve port to the pressure relief chamber 64, and then flow out through the medium outlet 61 to the outside of the valve device 10. For example, when the oil pressure in the valve channel 62 reaches the third pressure threshold, a large gap appears between the first valve body 11 and the protruding structure 63, and the overflow valve port opens significantly.

[0100] In some embodiments of this application, reference is made to Figures 1-2 , Figures 5-6 As shown, the valve device 10 also includes a second valve assembly 7, which includes a second valve body 71 mounted on the valve housing 6. The second valve body 71 has a second chamber 713, and the communication damping between the second chamber 713 and the valve passage 62 is adjustable. For example, the communication area between the second chamber 713 and the valve passage 62 is adjustable to change the communication damping between the second chamber 713 and the valve passage 62. When the second chamber 713 is in communication with the valve passage 62, the oil in the second chamber 713 can flow to the valve passage 62.

[0101] In some embodiments of this application, reference is made to Figures 1-2 , Figures 5-6 As shown, the second valve assembly 7 includes a first valve plate 72, and the second valve body 71 has a fourth channel 7111. The fourth channel 7111 connects the second chamber 713 and the valve channel 62. The first valve plate 72 can block or open the fourth channel 7111. When the first valve plate 72 blocks the fourth channel 7111, the second chamber 713 is isolated from the valve channel 62. When the first valve plate 72 opens the fourth channel 7111, the second chamber 713 and the valve channel 62 are connected through the fourth channel 7111. When the oil pressure in the second chamber 713 reaches a first pressure threshold, the first valve plate 72 opens the fourth channel 7111.

[0102] In some embodiments of this application, reference is made to Figures 1-2 , Figures 5-6 As shown, the second valve body 71 has a fifth channel 7121 and a sixth channel 7122. The second chamber 713 is connected to the fifth channel 7121, and the sixth channel 7122 is selectively connected to the second chamber 713.

[0103] In some embodiments of this application, reference is made to Figures 1-2 , Figures 5-6 As shown, the second valve assembly 7 also includes a second valve plate 73, which is capable of blocking or opening the sixth channel 7122. When the second valve plate 73 blocks the sixth channel 7122, the sixth channel 7122 is isolated from the second chamber 713. When the second valve plate 73 opens the sixth channel 7122, the sixth channel 7122 is connected to the second chamber 713.

[0104] In some embodiments of this application, reference is made to Figures 1-2 , Figures 5-6 As shown, the second valve assembly 7 also includes a third elastic element 74, which is disposed within the second chamber 713. The third elastic element 74 applies an elastic force to the second valve plate 73 in the direction of blocking the sixth channel 7122. In other words, the third elastic element 74 applies an elastic force to the second valve plate 73 toward the second valve body 712 to drive the valve plate to block the sixth channel 7122. When the medium pressure in the sixth channel 7122 reaches a preset pressure threshold, the medium in the sixth channel 7122 can push the second valve plate 73 to separate from the second valve body 712. For example, the medium can push the second valve plate 73 to move upward, separating the second valve plate 73 from the second valve body 712, allowing the medium to enter the second chamber 713 from the sixth channel 7122.

[0105] Optionally, the third elastic element 74 can be a spring, a wave spring, etc., for example Figures 1-2 , Figures 5-6 As shown, the third elastic element 74 is a spring.

[0106] Specifically, the second valve plate 73 is constructed as a ring structure, with a hollow second valve plate hole at the center of the second valve plate 73, and the fifth channel 7121 is connected to the second chamber 713 through the second valve plate hole.

[0107] In some embodiments of this application, reference is made to Figures 1-2 , Figures 5-6 As shown, the second valve body 71 includes: a second valve seat 711 and a second valve body 712. The second valve seat 711 is mounted on the valve housing 6, and a fourth channel 7111 is formed on the second valve seat 711. The second valve body 712 is mounted on the second valve seat 711, and a fifth channel 7121 and a sixth channel 7122 are formed on the second valve body 712.

[0108] Optionally, the second valve seat 711 and the valve housing 6 can be threadedly connected, clamped, fastened by fasteners, or the like.

[0109] Optionally, the second valve body 712 and the second valve seat 711 can be threadedly connected, clamped, fastened by fasteners, or the like.

[0110] In some embodiments of the present application, as shown in Figures 1-2 , Figures 5-6 , the sixth passage 7122 is separated from the fifth passage 7121 in the radial direction of the second valve body 712.

[0111] In some embodiments of the present application, as shown in Figures 1-2 , Figures 5-6 , the valve device 10 further comprises a push rod 4 connected to the side of the pilot valve plug 2 away from the first valve body 11, and the drive assembly 8 is configured to drive the push rod 4 to move towards the first valve body 11 to drive the pilot valve plug 2 to move. When the valve device 10 is not powered or the valve device 10 is powered at a low current, the first valve body 11 is axially displaced L under the hydraulic pressure of the oil below, and the first elastic member 3 on the pilot valve plug 2 reduces the influence of the first valve body 11 and the oil on the distance D between the push rod 4 and the pilot valve plug 2 in the axial direction.

[0112] In some embodiments of the present application, as shown in Figures 1-2 , Figures 5-6 , the pilot valve plug 2 has a push rod groove 23, and one end of the push rod 4 extends into the push rod groove 23. The distance D between the push rod 4 and the pilot valve plug 2 in the axial direction is the distance between the lower bottom wall of the push rod 4 and the groove bottom wall of the push rod groove 23.

[0113] Optionally, the outer peripheral wall of the push rod 4 and the groove peripheral wall of the push rod groove 23 can be gap-fitted, so that the relative axial distance between the push rod 4 and the pilot valve plug 2 can be adjusted.

[0114] In some embodiments of the present application, as shown in Figures 1-2 , the pilot valve plug 2 comprises a plug body 21 and a plug skirt 22 connected to the plug body 21, the plug skirt 22 extending outwardly in the radial direction of the plug body 21, and the plug body 21 being adapted to open or block the pilot passage 111, and one end of the first elastic member 3 abutting against the plug skirt 22. By providing the plug skirt 22, the elastic force of the first elastic member 3 on the pilot valve plug 2 can be more uniform, and the pilot valve plug 2 is less likely to be deflected.

[0115] In some embodiments of the present application, as shown in Figures 5-6 , Figures 1-8As shown, the valve plug body 21 has a push rod guide surface 211, an elastic element guide surface 212, and a sealing surface 214. The outer peripheral wall of the push rod 4 is clearance-fitted with the push rod guide surface 211. The first elastic element 3 is sleeved outside the elastic element guide surface 212, and the elastic element guide surface 212 can limit the first elastic element 3 to prevent it from detaching from the pilot valve plug 2. The valve plug skirt 22 has an elastic element abutment surface 213, and one end of the first elastic element 3 abuts against the elastic element abutment surface 213.

[0116] In some embodiments of this application, the elastic contact surface 213 can be a plane, an arc surface, etc.

[0117] In some embodiments of this application, the sealing surface 214 may be a conical surface, an arc surface, etc.

[0118] In some embodiments of this application, reference is made to Figures 3-4 , Figures 7-8 As shown, the valve device 10 also includes a base valve seat 5, and a drive assembly 8 is disposed on the side of the base valve seat 5 opposite to the pilot valve plug 2. The base valve seat 5 has a push rod hole through which the push rod 4 passes.

[0119] In some embodiments of this application, reference is made to Figures 1-2 As shown, one end of the first elastic element 3 abuts against the valve plug skirt 22, and the other end abuts against the base valve seat 5. The first elastic element 3 applies a force toward the first valve body 11 to the pilot valve plug 2. By providing the valve plug skirt 22 on the outside of the pilot valve plug 2 and the first elastic element 3 in the upper region on the outside of the pilot valve plug 2, when the valve device 10 is not energized or is energized under low current, the first valve body 11 moves axially upward under the hydraulic action of the oil below. Under the action of the first elastic element 3 on the pilot valve plug 2, the influence of the first valve body 11 on the push rod 4 and the pilot valve plug 2 in the axial distance D is reduced. When the flow resistance of the oil inside the damping controller 100 fluctuates greatly, the elastic force of the first elastic element 3 controls the axial fluctuation of the pilot valve plug 2, thereby reducing the axial displacement fluctuation of the first valve body 11, stabilizing the damping force of the system, and meeting the stable damping force requirement of the shock absorber of vehicle 10000.

[0120] In some embodiments of this application, reference is made to Figures 5-6As shown, one end of the first elastic member 3 is abutted against the valve plug skirt 22, and the other end is abutted against the first valve seat 12. By arranging the valve plug skirt 22 outside the pilot valve plug 2, and arranging the first elastic member 3 at the lower region outside the pilot valve plug 2, the first elastic member 3 stably abuts the pilot valve plug 2 with the push rod 4, and when the oil flow resistance inside the damping controller 100 fluctuates greatly, the elastic force of the first elastic member 3 controls the axial fluctuation of the pilot valve plug 2, thereby reducing the axial displacement fluctuation of the first valve body 11, stabilizing the damping force of the system, and meeting the requirement of the shock absorber of the vehicle 10000 for stable indicator force value.

[0121] In some embodiments of the present application, referring to Figures 1-2 、 Figures 5-6 As shown, the driving assembly 8 is located at the side of the pilot valve plug 2 away from the first valve body 11, for example, the driving assembly 8 is located at the upper side of the pilot valve plug 2. The driving assembly 8 includes a coil 81 and a magnetic core 82, the magnetic core 82 is fixedly connected with the push rod 4, and the coil 81 is used to drive the magnetic core 82 to move.

[0122] Optionally, the coil 81 is mounted on the base valve seat 5, and the magnetic core 82 is fixedly mounted on the outer periphery of the push rod 4, and when the coil 81 drives the magnetic core 82 to move, the magnetic core 82 drives the push rod 4 to move synchronously.

[0123] In some embodiments of the present application, referring to Figures 1-2 、 Figures 5-6 As shown, the driving assembly 8 further includes a fourth elastic member 83 and a fifth elastic member 84, the fourth elastic member 83 is abutted against the magnetic core 82 to apply a force to the magnetic core 82 towards the pilot valve plug 2, and the fifth elastic member 84 is abutted against the magnetic core 82 to apply a force to the magnetic core 82 away from the pilot valve plug 2. For example, the fourth elastic member 83 is abutted against the end of the magnetic core 82 away from the pilot valve plug 2, and the fifth elastic member 84 is abutted against the end of the magnetic core 82 close to the pilot valve plug 2. Referring to Figures 1-2 As shown, the fourth elastic member 83 is abutted against the upper end of the magnetic core 82, and the fifth elastic member 84 is abutted against the lower end of the magnetic core 82.

[0124] Specifically, referring to Figures 5-6 、 Figure 1As shown, the magnetic core 82 and the push rod 4 constitute a moving part, when the coil 81 is powered, the electromagnetic force drives the magnetic core 82 to move, the magnetic core 82 drives the push rod 4 to move, the whole moving part moves, thereby changing the opening state of the pilot valve plug 2, when the coil 81 is powered off, the fourth elastic member 83 and the fifth elastic member 84 jointly act to push the magnetic core 82 to reset, the magnetic core 82 drives the push rod 4 to reset, and the force of the push rod 4 on the pilot valve plug 2 is changed. The fourth elastic member 83 and the fifth elastic member 84 also provide double elastic support for the magnetic core 82, so that the magnetic core 82 can remain stable when subjected to electromagnetic force and is not easy to deviate or shake, thereby improving the control accuracy and stability of the valve device 10. The gap cooperation between the push rod 4 and the pilot valve plug 2 can act as a damping effect to suppress the vibration of the pilot valve plug 2 during opening, and the push rod 4 acts as a guide structure to limit the non-axial movement of the pilot valve plug 2, thereby improving the stability of the valve device 10.

[0125] Optionally, the fourth elastic member 83 can be a spring, a wave spring, etc. Figures 1-2 、 Figures 5-6 As shown, the fourth elastic member 83 is a spring.

[0126] Optionally, the fifth elastic member 84 can be a spring, a wave spring, etc. Figures 1-2 、 Figures 5-6 As shown, the fifth elastic member 84 is a spring.

[0127] In some embodiments of the present application, referring to Figures 1-2 、 Figures 5-6 As shown, the drive assembly 8 further comprises an outer housing 852 and an inner housing 851, the outer housing 852 covers at least a part of the outer housing 852, and the inner housing 851 is connected with the valve housing 6. The inner housing 851 forms a containing cavity inside, and the coil 81 is located in the containing cavity. Specifically, the outer housing 852 provides a safe and closed working environment for the inner housing 851, the coil 81, the magnetic core 82, etc., avoiding interference and damage from the external environment.

[0128] Optionally, the inner housing 851 and the valve housing 6 can be threadedly connected, clamped, fastened, etc.

[0129] In some embodiments of the present application, referring to Figures 1-2 、 Figures 5-6As shown, the driving assembly 8 further comprises a coil coating, a first guide sleeve 861, a second guide sleeve 862, a core cover 88, a magnetic isolation ring 89 and a locking sleeve 87. The coil coating is wrapped on the outer wall of the coil 81. The first guide sleeve 861 guides the upper end of the push rod 4. The second guide sleeve 862 guides the upper end of the push rod 4. The inner wall of the core cover 88 is sleeved on the outer wall of the magnetic core 82. The upper end of the magnetic isolation ring 89 abuts against the core cover 88. The lower end of the magnetic isolation ring 89 is the base valve seat 5. Specifically, the coil coating has good protection and insulation effect. The first guide sleeve 861 and the second guide sleeve 862 enable the push rod 4 to be accurately positioned and supported, thereby maintaining the stability and consistency of the internal structure of the driving assembly 8. The second guide sleeve 862 can be installed in the core cover 88 or in the push rod hole of the base valve seat 5. The core cover 88 provides a closed and stable magnetic field environment for the magnetic core 82. The magnetic isolation ring 89 effectively isolates the magnetic field interference. Through the close cooperation and layout of the above-mentioned elements, the overall structure of the driving assembly 8 is more compact and stable, thereby improving the reliability and durability of the driving assembly 8.

[0130] In some embodiments, the magnetic core 82 and the push rod 4 are soft magnetic materials, which are magnetized in the coil 81 in the same direction as the magnetic field of the coil 81, thereby generating an axial electromagnetic force. When the pilot valve plug 2 is working, the lower end surface of the push rod 4 can abut against the pilot valve plug 2. The axial electromagnetic force acts on the pilot valve plug 2 to affect the second pressure threshold at which the pilot valve plug 2 is opened, thereby affecting the medium pressure of the containing cavity 13 and ultimately affecting the third pressure threshold at which the first valve body 11 is opened, thereby changing the pressure-flow characteristic of the valve device 10. Different working currents of the valve device 10 can control the electromagnetic force acting on the push rod 4. In a large-current working condition, the electromagnetic force is larger. Different electromagnetic forces have different third pressure thresholds at which the first valve body 11 is opened, thereby realizing the regulation and control of the pressure-flow characteristic of the valve device 10. The pressure-flow characteristic of the valve device 10 affects the damping force-speed characteristic of the shock absorber. Different currents in the valve device 10 can realize continuous control of the damping of the shock absorber, thereby improving comfort and stability.

[0131] Referring to Figures 1-2 , Figures 5-6 , Figures 1-2As shown, the damping controller 100 according to the second aspect of the present application comprises a controller body 110, a first valve device 10a and a second valve device 10b, the controller body 110 has a first cavity 101 and a second cavity 102, the first cavity 101 and the second cavity 102 are in communication; the first valve device 10a is installed in the first cavity 101, the second valve device 10b is installed in the second cavity 102, the first valve device 10a and the second valve device 10b are both the valve device 10 of the above-mentioned embodiments, the medium outlet 61 of the first valve device 10a and the sixth channel 7122 are both in communication with the first cavity 101, the medium outlet 61 of the second valve device 10b and the sixth channel 7122 are both in communication with the second cavity 102, the fifth channel 7121 of the first valve device 10a is used for connecting with the first device, and the fifth channel 7121 of the second valve device 10b is used for connecting with the second device, so as to adjust the communication damping between the first device and the second device.

[0132] The first valve device 10a and the second valve device 10b are both provided with the first elastic member 3, so as to control the stable damping force of the oil liquid flowing between the first device and the second device.

[0133] The first valve device 10a is also called a recovery valve device, and the second valve device 10b is also called a compression valve device.

[0134] According to the damping controller 100 of the present application, the valve device 10 is provided with the first elastic member 3, so that the fluctuation caused by the medium to the pilot valve plug 2 is small, the influence of the medium on the position of the pilot valve plug 2 and the first valve body 11 is reduced, the damping force inside the valve device 10 is stable, and then the damping force inside the damping controller 100 is stable.

[0135] In some embodiments of the present application, referring to Figures 5-6 As shown, the controller body 110 further has a third cavity 103, and the first cavity 101 and the second cavity 102 are in communication through the third cavity 103.

[0136] In some embodiments of the present application, referring to Figures 11-17 As shown, the controller body 110 further has a fourth cavity 104 and a fifth cavity 105, the fifth channel 7121 of the first valve device 10a is in communication with the fourth cavity 104, the fifth channel 7121 of the second valve device 10b is in communication with the fifth cavity 105, the first device is in communication with the fourth cavity 104, and the second device is in communication with the fifth cavity 105.

[0137] The damping controller 100 of the present application combines the first valve device 10a, the second valve device 10b, the first device and the second device together through the controller body 110, to form a suspension damping control system 1000.

[0138] In some embodiments of the present application, the fifth channel 7121 of the first valve device 10a is used to connect with the third device, and the fifth channel 7121 of the second valve device 10b is used to connect with the fourth device. At this time, the third device and the first device are both connected with the fourth cavity 104, and the fourth device and the second device are both connected with the fifth cavity 105.

[0139] In some embodiments of the present application, referring to Figures 11-17 As shown in the figure, the controller body 110 also has a shock absorber interface 108, a central control cylinder interface 106, a stiffness conversion valve interface 107, and an accumulator interface 109. The central control cylinder interface 106 and the stiffness conversion valve interface 107 are both connected with the fourth cavity 104, and the shock absorber interface 108 and the accumulator interface 109 are both connected with the fifth cavity 105. The first device is a central control cylinder, the second device is a shock absorber, the third device is a stiffness conversion valve, and the fourth device is an accumulator. The shock absorber is connected to the shock absorber interface 108, the central control cylinder is connected to the central control cylinder interface 106, the stiffness conversion valve is connected to the stiffness conversion valve interface 107, and the accumulator is connected to the accumulator interface 109.

[0140] The damping controller 100 of the present application combines the first valve device 10a, the second valve device 10b, the accumulator, the stiffness conversion valve, the central control cylinder, and the shock absorber together through the controller body 110 to form a suspension damping control system 1000.

[0141] In some embodiments of the present application, the stiffness conversion valve is a normally open valve, and has a nitrogen-filled stiffness accumulator in the upper part. The gas pressure in the stiffness accumulator is 1.7 MPa.

[0142] The central control cylinder is connected with four damping controllers 100 at the same time, which is an oil system for balancing the four wheels of the vehicle 10000. The central control cylinder is externally connected with a gas-compressible accumulator.

[0143] The accumulator interface 109 is externally connected with a gas-compressible accumulator, and the gas pressure in the accumulator is 1.5 MPa.

[0144] Figures 11-17Figure 7 is a schematic diagram of the flow path within the damper controller 100 when the first valve device 10a and the second valve device 10b are not energized and the piston rod of the damper is retracted. Specifically, when the coil 81 of the valve device 10 is not energized, the piston rod in the damper moves upward, and the oil in the central control cylinder and the stiffness accumulator flows from the fourth chamber 104 in the damper controller 100 to the fifth chamber 105 via the first chamber 101, the third chamber 103, and the second chamber 102. The oil pushes the first valve disc 72 in the first valve device 10a and enters the valve passage 62 inside the first valve device 10a, and then flows into the relief chamber 64 via the gap between the first valve body 11 and the protruding structure 63. Subsequently, the oil flows out of the medium outlet 61 of the first valve device 10a, first through the first chamber 101, and then through the third chamber 103, to the second chamber 102. Then, the oil pressure pushes the second valve disc 73 of the second valve device 10b at the sixth passage 7122 of the second valve device 10b, and enters the second chamber 713 of the second valve device 10b. The oil in the second chamber 713 of the second valve device 10b flows into the fifth chamber 105 from the fifth passage 7121, and finally flows to the damper via the damper interface 108. In this process, the flow resistance through the valve device 10 is small, and the damper behaves as "soft". The path is shown as A1→A2→A3→A4→A5 in Figure 8. Figures 11-17

[0145] Figure 12 Figure 9 is a schematic diagram of the flow path within the damper controller 100 when the first valve device 10a and the second valve device 10b are not energized and the piston rod of the damper is compressed. Specifically, when the coil 81 of the valve device 10 is not energized, the piston rod in the damper moves downward, and the oil in the damper flows from the fifth chamber 105 in the damper controller 100 to the fourth chamber 104 via the second chamber 102, the third chamber 103, and the first chamber 101. The oil pushes the first valve disc 72 in the second valve device 10b and enters the valve passage 62 inside the second valve device 10b, and then flows into the relief chamber 64 via the gap between the first valve body 11 and the protruding structure 63. Subsequently, the oil flows out of the medium outlet 61 of the second valve device 10b, first through the second chamber 102, and then through the third chamber 103, to the first chamber 101. Then, the oil pressure pushes the second valve disc 73 of the first valve device 10a at the sixth passage 7122 of the first valve device 10a, and enters the second chamber 713 of the first valve device 10a. The oil in the second chamber 713 of the first valve device 10a flows into the fourth chamber 104 from the fifth passage 7121, and finally flows to the central control cylinder via the central control cylinder interface 106, and to the stiffness accumulator via the stiffness conversion valve interface 107. In this process, the flow resistance through the valve device 10 is small, and the damper behaves as "soft". The path is shown as A6→A7→A8→A9→A10 in Figure 8. Figure 12

[0146] Figure 13 ​​is a schematic diagram of the flow path in the damper controller 100 when the first valve device 10a and the second valve device 10b are energized and the piston rod of the damper is retracted. Figure 13 is another schematic diagram of the flow path in the damper controller 100 when the first valve device 10a and the second valve device 10b are energized and the piston rod of the damper is retracted. In particular, referring to Figure 14 , when the coil 81 of the valve device 10 is energized, the piston rod of the damper moves upward, and the oil in the central control cylinder and the stiffness accumulator flows from the fourth chamber 104 in the damper controller 100 to the fifth chamber 105 via the first chamber 101, the third chamber 103, and the second chamber 102. The oil pushes the first valve disc 72 in the first valve device 10a away, and because the valve device 10 is energized, the pilot valve plug 2 is in a state of blocking the pilot passage 111, so the oil pressure needs to overcome the pushing force of the pilot valve plug 2 to enter the valve passage 62 inside the first valve device 10a (here, the damping force can be adjusted by inputting the current size of the valve device 10). Then the oil flows out from the first valve hole 112, the pilot passage 111 to the first chamber 52, first passes through the base valve hole 51 to reach the relief chamber 64, then passes through the medium outlet 61 to enter the first chamber 101, and then passes through the third chamber 103 to reach the second chamber 102. Then the oil pressure pushes the second valve disc 73 of the second valve device 10b away at the sixth passage 7122 of the second valve device 10b, enters the second chamber 713 of the second valve device 10b, and the oil in the second chamber 713 of the second valve device 10b flows into the fifth chamber 105 from the fifth passage 7121, and finally the oil flows to the damper through the damper interface 108. The flow resistance through the valve device 10 in this process is large, and the damper behaves as "hard". The path is shown as A1→B2→A3→A4→A5 in Figure 15 .

[0147] Referring to Figure 14 , when the oil pressure in the fourth chamber 104 in the damper controller 100 further increases, the oil pushes the first valve body 11 of the second valve device 10b away from the gap between the first valve body 11 and the protruding structure 63, flows out through the medium outlet 61 of the second valve device 10b, the first chamber 101, the third chamber 103, the second chamber 102, the sixth passage 7122 of the second valve device 10b, the second chamber 713 of the second valve device 10b, the fifth passage 7121 of the second valve device 10b, and the fifth chamber 105 to the damper. The path is shown as A1→A2→A3→A4→A5 in Figure 14 .

[0148] Figure 15 is a schematic diagram of the flow path in the damper controller 100 when the first valve device 10a and the second valve device 10b are energized and the piston rod of the damper is retracted. Figure 15is a schematic diagram of another flow path in the damper control 100 when the first valve device 10a and the second valve device 10b are energized and the damper piston rod is compressed. In particular, referring to Figure 16 , when the coil 81 of the valve device 10 is energized, the damper piston rod moves up, and the oil in the central control cylinder and the stiffness accumulator flows from the fifth chamber 105 in the damper control 100, through the second chamber 102, the third chamber 103, the first chamber 101, to the fourth chamber 104. The oil pushes the first valve disc 72 in the second valve device 10b away, and because the valve device 10 is energized, the pilot valve plug 2 is in the closed state, and the oil pressure needs to overcome the force of the pilot valve plug 2 to enter the valve passage 62 inside the second valve device 10b (here the damping force can be adjusted by the input current of the valve device 10). Then the oil flows out from the first valve hole 112, the pilot passage 111, to the first chamber 52, first through the base valve hole 51 to the relief chamber 64, then through the medium outlet 61 to the first chamber 101, and then through the third chamber 103 to the first chamber 101. Then the oil pressure pushes the second valve disc 73 of the first valve device 10a away at the sixth passage 7122 of the first valve device 10a, enters the second chamber 713 of the first valve device 10a, and the oil in the second chamber 713 of the first valve device 10a flows from the fifth passage 7121 to the fourth chamber 104, and finally the oil flows to the central control cylinder through the central control cylinder interface 106, and to the stiffness accumulator through the stiffness conversion valve interface 107. The flow resistance through the valve device 10 in this process is large, and the damper behaves as "hard". The path is shown as A6→B7→A8→A9→A10 in Figure 17 .

[0149] Referring to Figure 16 , when the oil pressure in the fifth chamber 105 in the damper control 100 further increases, the oil pushes the first valve body 11 of the first valve device 10a away from the gap between the first valve body 11 and the protruding structure 63, and flows to the central control cylinder and the stiffness conversion valve through the medium outlet 61 of the first valve device 10a, the second chamber 102, the third chamber 103, the first chamber 101, the sixth passage 7122 of the first valve device 10a, the second chamber 713 of the first valve device 10a, the fifth passage 7121 of the first valve device 10a, and the fourth chamber 104. The path is shown as A6→A7→A8→A9→A10 in Figure 16 . When the damping force is too large and the pressure exceeds the pressure of the pressure relief accumulator, a part of the oil will also flow to the pressure relief accumulator, and the path is shown as A11 in Figure 17 .

[0150] Referring to Figure 17As shown, according to the suspension damping control system 1000 of the third aspect of the present application, the damping controller 100 of the above-mentioned embodiments, the first device is a central control cylinder, and the second device is a shock absorber. The shock absorber is connected to the shock absorber interface 108, and the central control cylinder is connected to the central control cylinder interface 106.

[0151] According to the suspension damping control system 1000 of the present application, the valve device 10 of the damping controller 100 is provided with the first elastic member 3, so that the fluctuation of the medium on the pilot valve plug 2 is small, the influence of the medium on the position of the pilot valve plug 2 and the first valve body 11 is reduced, the damping force inside the valve device 10 is stable, and the damping force of the suspension damping control system 1000 is stable.

[0152] In some embodiments of the present application, the suspension damping control system 1000 further comprises a stiffness conversion valve, and the stiffness conversion valve and the central control cylinder are connected to the fifth channel 7121 of the first valve device 10a. The controller body 110 has a stiffness conversion valve interface 107 connected to the fourth cavity 104, and the stiffness conversion valve is connected to the stiffness conversion valve interface 107.

[0153] In some embodiments of the present application, the suspension damping control system 1000 further comprises an accumulator, and the accumulator and the shock absorber are connected to the fifth channel 7121 of the second valve device 10b. The controller body 110 has an accumulator interface 109 connected to the fifth cavity 105, and the accumulator is connected to the accumulator interface 109.

[0154] It can be understood that the medium flowing in the damping controller 100 and the valve device 10 can be oil, gas, gas-liquid mixture or other medium.

[0155] Referring to Figure 17 Figures 11-18 Figure 19 As shown, according to the vehicle 10000 of the fourth aspect of the present application, the suspension damping control system 1000 of the above-mentioned embodiments is included.

[0156] According to the vehicle 10000 of the present application, the valve device 10 of the suspension damping control system 1000 is provided with the first elastic member 3, so that the fluctuation of the medium on the pilot valve plug 2 is small, the influence of the medium on the position of the pilot valve plug 2 and the first valve body 11 is reduced, the damping force inside the valve device 10 is stable, and the damping force of the suspension damping control system 1000 is stable.

[0157] In the description of the application, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.

[0158] In the present application, unless specifically defined and limited otherwise, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrated; can be mechanically connected, or electrically connected or can communicate with each other; can be directly connected, or indirectly connected through an intermediate medium; can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0159] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application.

[0160] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as a limitation of the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A valve device (10), characterized in that, include: First and second lanes; A first valve body (11) is movable to adjust the flow damping between the first channel and the second channel. The first valve body (11) has a pilot channel (111) that is connected to the second channel. A first valve hole (112) is provided on the first valve body (11). A pilot valve plug (2) is disposed on one side of the first valve body (11). The pilot valve plug (2) is adapted to open or block the pilot channel (111). When the pilot valve plug (2) opens the pilot channel (111), the pilot channel (111) can be connected to the first channel through the third channel. A drive assembly (8) is used to drive the pilot valve plug (2) to move; and The first elastic element (3) has one end abutting against the pilot valve plug (2) to reduce the fluctuations caused by the medium to the pilot valve plug (2); A first valve seat (12) is provided, and a first valve body (11) is movable relative to the first valve seat (12). A receiving cavity (13) is formed between the first valve seat (12) and the first valve body (11). The pilot channel (111) is connected to the receiving cavity (13). The valve housing (6) has a first valve body (11) that is movable relative to the valve housing (6). The valve housing (6) has a medium outlet (61) that is configured as at least a part of the first channel. A valve channel (62) is formed inside the valve housing (6) that is configured as at least a part of the second channel. The valve channel (62) is connected to the receiving cavity (13) through the first valve hole (112). The base valve seat (5) is connected to the valve housing (6), and the base valve seat (5) is provided with a base valve hole (51), which is constructed as at least a part of the third channel.

2. The valve device (10) according to claim 1, characterized in that, One end of the first elastic element (3) abuts against the pilot valve plug (2) to apply a force toward the first valve body (11) to the pilot valve plug (2).

3. The valve device (10) according to claim 1, characterized in that, One end of the first elastic element (3) abuts against the pilot valve plug (2) to apply a force away from the first valve body (11) to the pilot valve plug (2).

4. The valve device (10) according to claim 1, characterized in that, One of the first valve body (11) and the first valve seat (12) has a guide cavity, and the other extends at least partially into the guide cavity to guide and cooperate with the first valve body (11). The first valve body (11) is movable relative to the first valve seat (12) in a direction toward or away from the pilot valve plug (2).

5. The valve device (10) according to claim 1, characterized in that, The other end of the first elastic element (3) abuts against the first valve seat (12), and the first elastic element (3) applies a force to the pilot valve plug (2) away from the first valve body (11).

6. The valve device (10) according to claim 1, characterized in that, The valve housing (6) is provided with a pressure relief chamber (64), and the medium outlet (61) is connected to the pressure relief chamber (64).

7. The valve device (10) according to claim 6, characterized in that, The drive assembly (8) is disposed on the side of the base valve seat (5) away from the pilot valve plug (2), a first chamber (52) is formed between the first valve seat (12) and the base valve seat (5), the base valve hole (51) connects the first chamber (52) and the pressure relief chamber (64), and the first chamber (52) is configured as at least a part of the third channel.

8. The valve device (10) according to claim 6, characterized in that, The pressure relief chamber (64) is configured as at least a portion of the first channel, and the first valve body (11) is movable to adjust the communication damping between the valve channel (62) and the pressure relief chamber (64).

9. The valve device (10) according to claim 1 or 8, characterized in that, The valve device (10) further includes a second elastic element (14), which is disposed in the receiving cavity (13) on the axial direction of the first valve body (11). One end of the second elastic element (14) abuts against the first valve body (11), and the other end of the second elastic element (14) abuts against the first valve seat (12).

10. The valve device (10) according to claim 1 or 8, characterized in that, The pilot channel (111) includes an axial channel (1111) and a radial channel (1112). The pilot valve plug (2) is used to selectively block the axial channel (1111). The radial channel (1112) is connected to the axial channel (1111) and extends radially along the first valve body (11) to the receiving cavity (13).

11. The valve device (10) according to claim 8, characterized in that, A radially extending protruding structure (63) is formed on the inner peripheral wall of the valve housing (6), and the protruding structure (63) forms the valve channel (62). The first valve body (11) is selectively attached to or separated from the protruding structure (63). The pressure relief chamber (64) and the valve channel (62) are adapted to communicate through the gap between the first valve body (11) and the protruding structure (63).

12. The valve device (10) according to claim 1 or 8, characterized in that, The valve device (10) further includes a second valve assembly (7), which includes a second valve body (71) mounted on the valve housing (6). The second valve body (71) has a second chamber (713) with adjustable communication damping between the second chamber (713) and the valve passage (62).

13. The valve device (10) according to claim 12, characterized in that, The second valve assembly (7) includes a first valve plate (72), and the second valve body (71) has a fourth channel (7111) for connecting the second chamber (713) and the valve channel (62). The first valve plate (72) is capable of blocking or opening the fourth channel (7111).

14. The valve device (10) according to claim 13, characterized in that, The second valve body (71) has a fifth channel (7121) and a sixth channel (7122), the second chamber (713) is connected to the fifth channel (7121), and the sixth channel (7122) is selectively connected to the second chamber (713).

15. The valve device (10) according to claim 14, characterized in that, The second valve assembly (7) also includes a second valve plate (73) which is capable of blocking or opening the sixth channel (7122).

16. The valve device (10) according to claim 15, characterized in that, The second valve assembly (7) further includes a third elastic element (74) disposed in the second chamber (713) and the third elastic element (74) is used to apply an elastic force to the second valve plate (73) to move in the direction of blocking the sixth channel (7122).

17. The valve device (10) according to claim 16, characterized in that, The second valve body (71) includes: The second valve seat (711) is mounted on the valve housing (6), and the fourth channel (7111) is formed on the second valve seat (711); and The second valve body (712) is mounted on the second valve seat (711), and the fifth channel (7121) and the sixth channel (7122) are formed on the second valve body (712).

18. The valve device (10) according to claim 17, characterized in that, In the radial direction of the second valve body (712), the sixth channel (7122) is separated from the fifth channel (7121).

19. The valve device (10) according to claim 1, characterized in that, The valve device (10) further includes a push rod (4), which is connected to the side of the pilot valve plug (2) away from the first valve body (11). The drive assembly (8) is used to drive the push rod (4) to move toward the first valve body (11) so as to move the pilot valve plug (2).

20. The valve device (10) according to claim 19, characterized in that, The pilot valve plug (2) has a push rod groove (23), and one end of the push rod (4) extends into the push rod groove (23).

21. The valve device (10) according to claim 19, characterized in that, The valve device (10) further includes a base valve seat (5), the drive assembly (8) is disposed on the side of the base valve seat (5) opposite to the pilot valve plug (2), the base valve seat (5) has a push rod hole through which the push rod (4) passes.

22. The valve device (10) according to claim 21, characterized in that, The other end of the first elastic element (3) abuts against the base valve seat (5), and the first elastic element (3) applies a force toward the first valve body (11) to the pilot valve plug (2).

23. The valve device (10) according to any one of claims 19-22, characterized in that, The drive assembly (8) is located on the side of the pilot valve plug (2) away from the first valve body (11). The drive assembly (8) includes a coil (81) and a magnetic core (82). The magnetic core (82) is fixedly connected to the push rod (4). The coil (81) is used to drive the magnetic core (82) to move.

24. The valve device (10) according to claim 23, characterized in that, The drive assembly (8) further includes a fourth elastic element (83) and a fifth elastic element (84), the fourth elastic element (83) abutting against the magnetic core (82) to apply a force toward the pilot valve plug (2) to the magnetic core (82), and the fifth elastic element (84) abutting against the magnetic core (82) to apply a force away from the pilot valve plug (2) to the magnetic core (82).

25. The valve device (10) according to any one of claims 1-3, characterized in that, The pilot valve plug (2) includes a valve plug body (21) and a valve plug skirt (22). The valve plug skirt (22) is connected to the valve plug body (21). The valve plug skirt (22) extends outward along the radial direction of the valve plug body (21). The valve plug body (21) is adapted to open or block the pilot channel (111). One end of the first elastic member (3) abuts against the valve plug skirt (22).

26. A damping controller (100), characterized in that, include: The controller body (110) has a first cavity (101) and a second cavity (102), which are connected to each other; A first valve device (10a) and a second valve device (10b) are provided. The first valve device (10a) is installed in the first cavity (101), and the second valve device (10b) is installed in the second cavity (102). Both the first valve device (10a) and the second valve device (10b) are valve devices (10) as described in any one of claims 1-25. The medium outlet (61) and the sixth channel (7122) of the first valve device (10a) are connected to the first cavity (101), and the medium outlet (61) and the sixth channel (7122) of the second valve device (10b) are connected to the second cavity (102). The fifth channel (7121) of the first valve device (10a) is used to connect to the first device, and the fifth channel (7121) of the second valve device (10b) is used to connect to the second device to adjust the communication damping between the first device and the second device.

27. The damping controller (100) according to claim 26, characterized in that, The controller body (110) also has a third cavity (103), through which the first cavity (101) and the second cavity (102) are connected.

28. A suspension damping control system (1000), characterized in that, Includes the damping controller (100) as described in claim 26 or 27, wherein the first device is a central control cylinder and the second device is a shock absorber.

29. The suspension damping control system (1000) according to claim 28, characterized in that, The suspension damping control system (1000) also includes a stiffness switching valve, and both the stiffness switching valve and the central control cylinder are connected to the fifth channel (7121) of the first valve device (10a).

30. The suspension damping control system (1000) according to claim 28, characterized in that, The suspension damping control system (1000) also includes an accumulator, and both the accumulator and the shock absorber are connected to the fifth channel (7121) of the second valve device (10b).

31. A vehicle (10000), characterized in that, Includes the suspension damping control system (1000) according to any one of claims 28-30.

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