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

Abstract

The invention 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 piece, the first valve body is provided with a pilot channel, the pilot valve plug is arranged on one side of the first valve body, and the pilot valve plug is suitable for opening or blocking the pilot channel; one end of the first elastic piece abuts against the pilot valve plug so that pre-tightening force can be generated between the pilot valve plug and the first valve body. According to the valve device, the first elastic piece is arranged, so that the fluctuation of the medium on 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.

Description

Technical Field

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

[0002] In the related technology, the valve device is used in the damping controller. When the valve device is not powered on or powered on at a low current, the internal oil fluctuates greatly, causing the position of the pilot valve plug and the first valve body inside the valve device to change with the oil fluctuation, resulting in unstable system damping force. Summary of the invention

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

[0004] The present application also proposes a damping controller having the above valve device.

[0005] The present application also proposes a suspension damping control system having the above-mentioned damping controller.

[0006] The application also proposes a vehicle having the above suspension damping control system.

[0007] According to the embodiment of the present application, the valve device includes: 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 can move to adjust the flow damping between the first channel and the second channel, the first valve body has a pilot channel, and the pilot channel is connected to the second channel; the pilot valve plug is arranged on one side of the first valve body, the pilot valve plug is suitable for opening or blocking the pilot channel, and when the pilot valve plug opens the pilot channel, the pilot channel can be connected to the first channel through a third channel; the driving assembly is used to drive the pilot valve plug to move, and one end of the first elastic member stops at the pilot valve plug to reduce the fluctuation of the pilot valve plug caused by the medium.

[0008] According to the valve device of the embodiment of the present application, by providing the first elastic member, the fluctuation caused by the medium on the pilot valve plug is smaller, the influence of the medium on the position of the pilot valve plug and the first valve body is reduced, and the damping force inside the valve device is stabilized.

[0009] 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 on the pilot valve plug toward 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 includes a first valve seat, and the first valve body is 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 at least partially extends into the guide cavity to guide and cooperate with the one, and the first valve body can move relative to the first valve seat in a direction close to 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, and the first elastic member applies a force on the pilot valve plug to move away from the first valve body.

[0014] According to some embodiments of the present application, the valve device also includes a valve housing, the first valve body is movable relative to the valve housing, a medium outlet is provided on the valve housing, the medium outlet is configured as at least a part of the first channel, a pressure relief chamber is provided in the valve housing, and the medium outlet is communicated with the pressure relief chamber.

[0015] According to some embodiments of the present application, the valve device also includes a base valve seat, the drive assembly is arranged on a side of the base valve seat facing away from the pilot valve plug, the valve housing is connected to the base valve seat, a base valve hole is provided on the base valve seat, a first chamber is formed between the first valve seat and the base valve seat, the base valve hole connects the first chamber and the pressure relief chamber, and the base valve hole and the first chamber are configured as at least a part of the third channel.

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

[0017] According to some embodiments of the present application, an accommodating cavity is formed between the first valve seat and the first valve body, and the pilot channel is in communication with the accommodating cavity;

[0018] The first valve body is provided with a first valve hole, and the valve channel is connected to the accommodating chamber through the first valve hole.

[0019] According to some embodiments of the present application, the valve device also includes a second elastic member, which is arranged in the accommodating cavity. In the axial direction of 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 channel includes an axial channel and a radial channel, the pilot valve plug is used to selectively block the axial channel, the radial channel is connected to the axial channel, and the radial channel extends radially along the first valve body to the accommodating cavity.

[0021] According to some embodiments of the present application, a protruding structure extending radially is formed on the inner circumferential wall of the valve housing, the protruding structure forms the valve channel, the first valve body and the protruding structure are selectively attached to or separated from each other, and the pressure relief chamber and the valve channel are suitable for being connected through a gap between the first valve body and the protruding structure.

[0022] According to some embodiments of the present application, the valve device also includes a second valve assembly, the second valve assembly includes a second valve body, the second valve body is installed on the valve housing, the second valve body has a second chamber, and the communication damping between the second chamber and the valve channel is adjustable.

[0023] According to some embodiments of the present application, the second valve assembly includes a first valve sheet, the second valve body has a first channel, the first channel is used to connect the second chamber with the valve channel, and the first valve sheet can block or open the first channel.

[0024] According to some embodiments of the present application, the second valve body has a second channel and a third channel, the second chamber is in communication with the second channel, and the third channel is selectively in communication with the second chamber.

[0025] According to some embodiments of the present application, the second valve assembly further includes a second valve sheet, and the second valve sheet can block or open the third channel.

[0026] According to some embodiments of the present application, the second valve assembly further includes a third elastic member, which is disposed in the second chamber and is used to apply an elastic force to the second valve plate to move in a direction to block the third channel.

[0027] According to some embodiments of the present application, the second valve body includes: a second valve seat and a second valve body, the second valve seat is installed on the valve housing, and the first channel is formed on the second valve seat; the second valve body is installed on the second valve seat, and the second channel and the third channel are formed on the second valve body.

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

[0029] According to some embodiments of the present application, the valve device further includes a push rod connected to a side of the pilot valve plug away from the first valve body, and the drive assembly is used to drive the push rod to move toward 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 includes a base valve seat, the drive assembly is arranged on a side of the base valve seat facing 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 on the pilot valve plug toward the first valve body.

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

[0034] According to some embodiments of the present application, the drive assembly also includes a fourth elastic member and a fifth elastic member, the fourth elastic member stops at the magnetic core to apply a force to the magnetic core toward the pilot valve plug, and the fifth elastic member stops at 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 includes a valve plug body and a valve plug skirt, the valve plug skirt is connected to the valve plug body, the valve plug skirt extends radially outward along the valve plug body, the valve plug body is suitable for opening or blocking the pilot channel, and one end of the first elastic member stops at the valve plug skirt.

[0036] According to the damping controller of the second aspect embodiment of the present application, it includes 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 connected; the first valve device is installed in the first cavity, and the second valve device is installed in the second cavity, the first valve device and the second valve device are both the above-mentioned valve devices, the medium outlet and the third channel of the first valve device are both connected to the first cavity, the medium outlet and the third channel of the second valve device are both connected to the second cavity, the second channel of the first valve device is used to connect to the first device, and the second channel of the second valve device is used to connect to the second device, so as to adjust the connection damping between the first device and the second device.

[0037] According to the damping controller of the embodiment of the present application, its valve device is provided with a first elastic member so that the fluctuation caused by the medium on the pilot valve plug is smaller, thereby reducing the influence of the medium on the position of the pilot valve plug and the first valve body, so that the damping force inside the valve device is stable, and further the damping force inside the damping controller is stable.

[0038] According to some embodiments of the present application, the damping controller also includes: a controller body, the controller body having a first cavity and a second cavity, a first valve device installed in the first cavity, a second valve device installed in the second cavity, the first valve device and the second valve device are both valve devices, the medium outlet and the third channel of the first valve device are both connected to the first cavity, and the medium outlet and the third channel of the second valve device are both connected to the second cavity.

[0039] 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 connected through the third cavity.

[0040] According to the suspension damping control system of the third aspect embodiment of the present application, it includes the above-mentioned damping controller, the first device is a central control cylinder, and the second device is a shock absorber.

[0041] According to the suspension damping control system of the embodiment of the present application, the valve device of the damping controller thereof is provided with a first elastic member so that the fluctuation caused by the medium on the pilot valve plug is smaller, thereby reducing the influence of the medium on the position of the pilot valve plug and the first valve body, making the damping force inside the valve device stable, and further making the damping force of the suspension damping control system stable.

[0042] According to some embodiments of the present application, the suspension damping control system further includes a stiffness conversion valve, and both the stiffness conversion valve and the central control cylinder are connected to the second channel of the first valve device.

[0043] According to some embodiments of the present application, the suspension damping control system further includes an accumulator, and both the accumulator and the shock absorber are connected to the second channel of the second valve device.

[0044] The vehicle according to the fourth aspect of the present application includes the above-mentioned suspension damping control system.

[0045] According to the vehicle of the embodiment of the present application, the valve device of its suspension damping control system is equipped with a first elastic member so that the fluctuation of the pilot valve plug caused by the medium is smaller, thereby reducing the influence of the medium on the position of the pilot valve plug and the first valve body, making the damping force inside the valve device stable, and further stabilizing the damping force of the suspension damping control system.

[0046] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 is a cross-sectional schematic diagram of a valve device in a first state according to an embodiment of the present application;

[0048] Figure 2 yes Figure 1 A schematic cross-sectional view of the valve device in a second state;

[0049] Figure 3 yes Figure 1 A three-dimensional schematic diagram of the pilot valve plug of the valve device shown;

[0050] Figure 4 yes Figure 1 A schematic cross-sectional view of a pilot valve plug of the valve device shown;

[0051] Figure 5 is a cross-sectional schematic diagram of a valve device in a first state according to an embodiment of the present application;

[0052] Figure 6 yes Figure 5 A schematic cross-sectional view of the valve device in a second state;

[0053] Figure 7 yes Figure 5 A three-dimensional schematic diagram of the pilot valve plug of the valve device shown;

[0054] Figure 8 yes Figure 5 A schematic cross-sectional view of a pilot valve plug of the valve device shown;

[0055] Fig. 9 is a three-dimensional schematic diagram of a first elastic member;

[0056] Fig.10 is a cross-sectional schematic diagram of a first valve assembly;

[0057] Fig.11 is a cross-sectional schematic diagram of a damping controller according to an embodiment of the present application;

[0058] Fig.12 is a schematic diagram of a flow path in a damping controller when the first valve device and the second valve device are not energized and the piston rod of the shock absorber is restored;

[0059] Fig.13 is a schematic diagram of a flow path in a damping controller when the first valve device and the second valve device are not energized and the piston rod of the shock absorber is compressed;

[0060] Fig.14 is a schematic diagram of the flow path in the damping controller when the first valve device and the second valve device are energized and the piston rod of the shock absorber is restored;

[0061] Fig.15 is another schematic diagram of a flow path in the damping controller when the first valve device and the second valve device are energized and the piston rod of the shock absorber is restored;

[0062] Fig.16 is a schematic diagram of the flow path in the damping controller when the first valve device and the second valve device are energized and the piston rod of the shock absorber is compressed;

[0063] Fig.17 is another schematic diagram of the flow path in the damping controller when the first valve device and the second valve device are energized and the piston rod of the shock absorber is compressed;

[0064] Fig.18 is a schematic diagram of a suspension damping control system according to an embodiment of the present application;

[0065] Fig.19 is a schematic diagram of a vehicle according to an embodiment of the present application.

[0066] Reference numerals:

[0067] Valve device 10, first valve device 10a, second valve device 10b, first valve assembly 1, first valve body 11, pilot channel 111, axial channel 1111, radial channel 1112, first valve hole 112, first valve seat 12, accommodating chamber 13, second elastic member 14, first sealing ring 15, pilot valve plug 2, valve plug body 21, push rod guide surface 211, elastic member guide surface 212, elastic member abutment surface 213, sealing surface 214, valve 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 channel 62, protruding structure 63, pressure relief chamber 64, second valve assembly 7, second valve body 71, second valve seat 711, first channel 7111, second valve body 712, second channel 7121, third channel 7122, second chamber 713, first valve disc 72, second valve disc 73, third elastic member 74, drive assembly 8, coil 81, magnetic core 82, fourth elastic member 83, fifth elastic member 84, inner shell 851, outer shell 852, first guide sleeve 861, second guide sleeve 862, locking sleeve 87, core cover 88, magnetic isolation ring 89;

[0068] 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, shock absorber interface 108, accumulator interface 109, controller body 110;

[0069] Suspension damping control system 1000;

[0070] Vehicles 10000. DETAILED DESCRIPTION

[0071] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0072] In the description of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0073] Combine the following Figure 1-Figure 19The valve device 10 , the damping controller 100 , the suspension damping control system 1000 , and the vehicle 10000 according to the embodiments of the present application are described in detail.

[0074] Reference Figure 1-Figure 2 , Figure 5-Figure 6 As shown, the valve device 10 according to the embodiment of the present 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 member 3 .

[0075] The first valve body 11 is movable to adjust the flow resistance 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 can be adjusted to change the communication resistance between the first channel and the second channel, for example, to increase or decrease the flow resistance 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.

[0076] 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 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, so that the medium in the second channel can reach the third channel through the pilot channel 111, and then enter the first channel from the third channel; when the pilot valve plug 2 closes the pilot channel 111, the pilot channel 111 cannot be connected to the first channel through the third channel.

[0077] The driving assembly 8 is used to drive the pilot valve plug 2 to move, and one end of the first elastic member 3 stops at the pilot valve plug 2 to reduce the fluctuation caused by the medium to the pilot valve plug 2. Specifically, the first elastic member 3 applies elastic force to the pilot valve plug 2 to stabilize the position of the pilot valve plug 2 as much as possible, so that the fluctuation caused by the medium to the pilot valve plug 2 is small.

[0078] Taking the case where the valve device 10 is applied to the damping controller 100 and the medium flowing inside the valve device 10 is oil as an example, when the flow resistance of the oil in the damping controller 100 fluctuates greatly, the elastic force applied by the first elastic member 3 to the pilot valve plug 2 controls the axial fluctuation of the pilot valve plug 2. At the same time, since the pilot valve plug 2 is suitable for contacting or separating with the first valve body 11, when the axial fluctuation of the pilot valve plug 2 is small, it is beneficial to reduce the axial displacement fluctuation of the first valve body 11, thereby stabilizing the damping force of the system and meeting the stability requirement of the shock absorber power value of the vehicle 10000.

[0079] It can be understood that the above-mentioned "axial direction" refers to the arrangement direction of the pilot valve plug 2 and the first valve body 11, that is, Figure 1-Figure 2 , Figure 5-Figure 6 The up and down directions shown in .

[0080] According to the valve device 10 of the embodiment of the present application, by setting the first elastic member 3, the fluctuation of the pilot valve plug 2 caused by the medium is smaller, and the influence of the medium on the position of the pilot valve plug 2 and the first valve body 11 is reduced, so that the damping force inside the valve device 10 is stabilized. 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 can be stabilized.

[0081] Optionally, the first elastic member 3 may be a spring, a wave spring, etc., for example Figure 1-Figure 2 , Figure 5-Figure 6 , Fig. 9 As shown, the first elastic member 3 is a spring.

[0082] In some embodiments of the present application, reference Figure 1-Figure 2 As shown, one end of the first elastic member 3 stops at the pilot valve plug 2 to apply a force toward the first valve body 11 to the pilot valve plug 2. The elastic force of the first elastic member 3 is applied to the pilot valve plug 2, reducing the fluctuation of the pilot valve plug 2 caused by the oil. The pilot valve plug 2 pushes the first valve body 11 to move downward in the axial direction. The downward force applied by the first elastic member 3 to the first valve body 11 interacts with the damping force of the system oil flowing upward, improving the fluctuation amplitude of the system's damping force, making the system's damping force stable, and meeting the stability requirement of the shock absorber power value of the vehicle 10000.

[0083] In some embodiments of the present application, reference Figure 5-Figure 6 As shown, one end of the first elastic member 3 stops at the pilot valve plug 2 to apply a 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, reducing the fluctuation of the pilot valve plug 2 caused by the oil. At the same time, since the pilot valve plug 2 is suitable for contacting or separating with the first valve body 11, when the axial fluctuation of the pilot valve plug 2 is small, it is beneficial to reduce the axial displacement fluctuation of the first valve body 11, so that the damping force of the system is stable, meeting the stability requirement of the shock absorber power value of the vehicle 10000.

[0084] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5-Figure 6 As shown, the valve device 10 further includes a first valve seat 12, and the first valve body 11 can move 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 in the axial direction.

[0085] In some embodiments of the present application, see Figure 1-Figure 2 , Figure 5-Figure 6 , Fig.10As shown, one of the first valve body 11 and the first valve seat 12 has a guide cavity, and the other at least partially extends into the guide cavity to cooperate with the other, and the first valve body 11 can move relative to the first valve seat 12 in a 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. Figure 1-Figure 2 , Figure 5-Figure 6 , Fig.10 In the example, the first valve seat 12 has a guide cavity, the first valve body 11 extends into the first valve seat 12, and the first valve body 11 and the first valve seat 12 are guided and matched.

[0086] In some embodiments of the present application, see Figure 1-Figure 2 , Figure 5-Figure 6 , Fig.10 As shown, a first sealing ring 15 is provided at the guide matching position of the first valve body 11 and the first valve seat 12. Therefore, the provision of the first sealing ring 15 significantly enhances the sealing effect between the first valve body 11 and the first valve seat 12, and the first sealing ring 15 can be tightly attached to the matching surface of the first valve body 11 and the first valve seat 12, effectively preventing leakage of the medium, and ensuring the stable operation of the valve device 10. The first sealing ring 15 also guides the first valve body 11. The first sealing ring 15 can effectively increase the sliding damping to suppress the flutter after the first valve body 11 is opened.

[0087] In some embodiments of the present application, reference Figure 5-Figure 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, and the first elastic member 3 applies a force on the pilot valve plug 2 to move away from the first valve body 11. Figure 5-Figure 6 In the embodiment, the first elastic member 3 applies an upward force to the pilot valve plug 2 to reduce the fluctuation of the pilot valve plug 2 caused by the oil.

[0088] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5-Figure 6 As shown, the valve device 10 further includes a valve housing 6, the first valve body 11 is movable relative to the valve housing 6, the first valve seat 12 is fixed relative to the valve housing 6, a medium outlet 61 is provided on the valve housing 6, the medium outlet 61 is configured as at least a part of the first channel, a pressure relief chamber 64 is provided in the valve housing 6, and the medium outlet 61 is connected to the pressure relief chamber 64. The medium outlet 61 is also connected to the external space of the valve device 10, and the oil in the pressure relief chamber 64 can flow out of the valve device 10 through the medium outlet 61.

[0089] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5-Figure 6As shown, the valve device 10 further includes a base valve seat 5, a drive assembly 8 is arranged on the side of the base valve seat 5 away from the pilot valve plug 2, a valve housing 6 is connected to the base valve seat 5, a first valve seat 12 is connected to the base valve seat 5, a base valve hole 51 is provided on the base valve seat 5, 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 oil in 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 connected to the pressure relief chamber 64 through the first chamber 52 and the base valve hole 51, so that the medium in the second channel can reach the first chamber 52 through the pilot channel 111, and the oil in the first chamber 52 can flow to the pressure relief chamber 64 through the base valve hole 51, and then flow out to the outside of the valve device 10 through the medium outlet 61.

[0090] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5-Figure 6 As shown, a valve channel 62 is formed in the valve housing 6, the valve channel 62 is configured as at least a part of the second channel, the pressure relief chamber 64 is configured as at least a part of the first channel, and the first valve body 11 can move to adjust the communication damping between the valve channel 62 and the pressure relief chamber 64. When the first valve body 11 moves, the size of its overflow valve port can be changed, thereby changing the communication damping between the valve channel 62 and the pressure relief chamber 64.

[0091] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5-Figure 6 , Fig.10 As shown, an accommodating chamber 13 is formed between the first valve seat 12 and the first valve body 11 , and the pilot channel 111 is connected to the accommodating chamber 13 , so that the oil in the accommodating chamber 13 can flow into the pilot channel 111 .

[0092] The first valve body 11 is provided with a first valve hole 112, and the valve channel 62 is connected to the accommodating chamber 13 through the first valve hole 112. The oil at the valve channel 62 can flow into the accommodating chamber 13 through the first valve hole 112, and the oil in the accommodating chamber 13 can further flow into the pilot channel 111. The accommodating chamber 13 is used to achieve pressure balance between the pilot channel 111 and the valve channel 62. If the accommodating chamber 13 is not provided and the pilot channel 111 is directly connected to 62, it will cause the upper and lower air pressures of the first valve body 11 to be unbalanced.

[0093] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5-Figure 6 , Fig.10As shown, the valve device 10 further includes a second elastic member 14, which is disposed in the accommodating cavity 13. 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 the first valve assembly 1, and the second elastic member 14 abuts against the first valve body 11 and the first valve seat 12. The second elastic member 14 provides an elastic force for the first valve body 11, and the elastic force keeps the first valve body 11 and the first valve seat 12 in a tendency to move away from each other at all times.

[0094] Optionally, the second elastic member 14 may be a spring, a wave spring, etc., for example Figure 1-Figure 2 , Figure 5-Figure 6 , Fig.10 As shown, the second elastic member 14 is a spring.

[0095] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5-Figure 6 , Fig.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. The radial channel 1112 extends to the accommodating chamber 13 along the radial direction of the first valve body 11. In other words, the medium can reach the radial channel 1112 through the accommodating chamber 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 accommodating chamber 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.

[0096] The radial channel 1112 and the axial channel 1111 are provided to improve the flow flexibility of the medium, and by optimizing the flow path of the medium, improve the stability of the medium in the flow process, which helps to reduce the fluctuation and vibration of the medium in the flow process, and reduce noise and wear. The radial channel 1112 is provided to reduce the axial size of the valve device 10. The axial channel 1111 and the radial channel 1112 are formed in the first valve body 11, and the internal space of the first valve body 11 is fully utilized.

[0097] Optionally, the radial channels 1112 may be one, two, three or more. For example, the radial channels 1112 may be four and distributed in an annular shape.

[0098] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5-Figure 6As shown, a protruding structure 63 extending in the radial direction is formed on the inner peripheral wall of the valve housing 6, and a valve channel 62 is formed in the protruding structure 63. The first valve body 11 and the protruding structure 63 are selectively fitted or separated, and the pressure relief chamber 64 and the valve channel 62 are suitable for being connected 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, and the first valve body 11 is located on the upper side of the protruding structure 63. The gap between the first valve body 11 and the protruding structure 63 is the overflow valve port, and the axial dimension of the overflow valve port is L. 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, that is, reducing the axial dimension fluctuation of the overflow valve port, so that the damping force of the system is stable, and the shock absorber power value stability requirement of the vehicle 10000 is met.

[0099] In some embodiments, the pressure relief chamber 64 and the valve channel 62 include a normally open state, that is, the first valve body 11 moves up and down to adjust the damping size. Even when the first valve body 11 abuts against the protruding structure 63, the pressure relief chamber 64 and the valve channel 62 are connected at a small flow rate.

[0100] Figure 1 , Figure 3 In the embodiment, the first valve body 11 fits with 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, so that the flow damping between the first channel and the second channel is large. Figure 2 , Figure 4 In the embodiment, there is a gap between the first valve body 11 and the protruding structure 63, and the gap is formed as a relief valve port. The medium flow resistance between the first valve body 11 and the protruding structure 63 is relatively Figure 1 , Figure 3 , so that the flow resistance between the first channel and the second channel is small, and the medium in the valve channel 62 can flow to the pressure relief chamber 64 through the overflow valve port, and then flow out of the valve device 10 through the medium outlet 61. 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 is greatly opened.

[0101] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5-Figure 6As shown, the valve device 10 further includes a second valve assembly 7, the second valve assembly 7 includes a second valve body 71, the second valve body 71 is 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 channel 62 is adjustable. For example, the communication area between the second chamber 713 and the valve channel 62 is adjustable to change the communication damping between the second chamber 713 and the valve channel 62. When the second chamber 713 is in communication with the valve channel 62, the oil in the second chamber 713 can flow to the valve channel 62.

[0102] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5-Figure 6 As shown, the second valve assembly 7 includes a first valve disc 72, and the second valve body 71 has a first channel 7111. The first channel 7111 is used to connect the second chamber 713 and the valve channel 62. The first valve disc 72 can block or open the first channel 7111. When the first valve disc 72 blocks the first channel 7111, the second chamber 713 is isolated from the valve channel 62. When the first valve disc 72 opens the first channel 7111, the second chamber 713 is connected to the valve channel 62 through the first channel 7111. When the oil pressure in the second chamber 713 reaches the first pressure threshold, the first valve disc 72 opens the first channel 7111.

[0103] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5-Figure 6 As shown, the second valve body 71 has a second channel 7121 and a third channel 7122 , the second chamber 713 is in communication with the second channel 7121 , and the third channel 7122 is selectively in communication with the second chamber 713 .

[0104] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5-Figure 6 As shown, the second valve assembly 7 further includes a second valve disc 73, and the second valve disc 73 can block or open the third channel 7122. When the second valve disc 73 blocks the third channel 7122, the third channel 7122 is isolated from the second chamber 713. When the second valve disc 73 opens the third channel 7122, the third channel 7122 is connected to the second chamber 713.

[0105] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5-Figure 6As shown, the second valve assembly 7 further includes a third elastic member 74, which is disposed in the second chamber 713, and is used to apply an elastic force to the second valve disc 73 to move in the direction of blocking the third channel 7122. In other words, the third elastic member 74 is used to apply an elastic force toward the second valve body 712 to the second valve disc 73, so as to drive the valve disc to block the third channel 7122. When the medium pressure in the third channel 7122 reaches a preset pressure threshold, the medium in the third channel 7122 can push the second valve disc 73 to separate from the second valve body 712. For example, the medium can push the second valve disc 73 to move upward, and the second valve disc 73 is separated from the second valve body 712, so that the medium can enter the second chamber 713 from the third channel 7122.

[0106] Optionally, the third elastic member 74 may be a spring, a wave spring, etc., for example Figure 1-Figure 2 , Figure 5-Figure 6 As shown, the third elastic member 74 is a spring.

[0107] Specifically, the second valve plate 73 is constructed as a circular ring structure, the center of the second valve plate 73 is a hollow second valve plate hole, and the second channel 7121 is connected to the second chamber 713 through the second valve plate hole.

[0108] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5-Figure 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 installed on the valve housing 6, and a first channel 7111 is formed on the second valve seat 711; the second valve body 712 is installed on the second valve seat 711, and a second channel 7121 and a third channel 7122 are formed on the second valve body 712.

[0109] Optionally, the second valve seat 711 and the valve housing 6 may be connected by threaded connection, clamping connection, fastener connection, etc.

[0110] Optionally, the second valve body 712 and the second valve seat 711 may be connected by threads, clamps, fasteners, etc.

[0111] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5-Figure 6 As shown, in the radial direction of the second valve body 712 , the third channel 7122 is separated from the second channel 7121 .

[0112] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5-Figure 6As shown, the valve device 10 further includes a push rod 4, which is connected to a side of the pilot valve plug 2 away from the first valve body 11, and the drive assembly 8 is used to drive the push rod 4 to move toward 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 generates an axial displacement L under the hydraulic pressure of the oil below, and under the action of the first elastic member 3 on the pilot valve plug 2, the influence of the first valve body 11 and the oil on the axial distance D between the push rod 4 and the pilot valve plug 2 is reduced.

[0113] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5-Figure 6 As shown, 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 bottom wall of the push rod groove 23.

[0114] Optionally, the outer peripheral wall of the push rod 4 and the peripheral wall of the push rod groove 23 may be clearance-matched, so that the relative axial distance between the push rod 4 and the pilot valve plug 2 can be adjusted.

[0115] In some embodiments of the present application, reference Figure 1-Figure 8 As shown, 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 radially outwardly of the valve plug body 21, the valve plug body 21 is suitable for opening or blocking the pilot channel 111, and one end of the first elastic member 3 stops at the valve plug skirt 22. By providing the valve plug skirt 22, the elastic force of the first elastic member 3 on the pilot valve plug 2 can be made more uniform, and the pilot valve plug 2 is not easy to deflect.

[0116] In some embodiments of the present application, reference Figure 3-Figure 4 , Figure 7-Figure 8 As shown, the valve plug body 21 has a push rod guide surface 211, an elastic member guide surface 212 and a sealing surface 214. The outer peripheral wall of the push rod 4 is in clearance with the push rod guide surface 211. The first elastic member 3 is sleeved outside the elastic member guide surface 212. The elastic member guide surface 212 can limit the first elastic member 3 to prevent the first elastic member 3 from detaching from the pilot valve plug 2. The valve plug skirt 22 has an elastic member abutting surface 213, and one end of the first elastic member 3 abuts against the elastic member abutting surface 213.

[0117] In some embodiments of the present application, the elastic member abutting surface 213 may be a flat surface, a curved surface, etc.

[0118] In some embodiments of the present application, the sealing surface 214 may be a conical surface, a curved surface, etc.

[0119] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5-Figure 6As shown, the valve device 10 further comprises a base valve seat 5 , the drive assembly 8 is arranged on a side of the base valve seat 5 facing away from the pilot valve plug 2 , the base valve seat 5 has a push rod hole, and the push rod 4 passes through the push rod hole.

[0120] In some embodiments of the present application, reference Figure 1-Figure 2 As shown, one end of the first elastic member 3 abuts against the valve plug skirt 22, and the other end of the first elastic member 3 abuts against the base valve seat 5, and the first elastic member 3 applies a force toward the first valve body 11 to the pilot valve plug 2. By arranging the valve plug skirt 22 on the outside of the pilot valve plug 2 and arranging the first elastic member 3 on the upper area of ​​the outside of the pilot valve plug 2, when the valve device 10 is not powered or the valve device 10 is powered at a low current, the first valve body 11 moves upward in the axial direction under the hydraulic action of the oil below, and under the action of the first elastic member 3 on the pilot valve plug 2, the influence of the first valve body 11 on the axial distance D between the push rod 4 and the pilot valve plug 2 is reduced. When the flow resistance of the oil in 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, making the damping force of the system stable, and meeting the stability requirement of the shock absorber power value of the vehicle 10000.

[0121] In some embodiments of the present application, reference Figure 5-Figure 6 As shown, one end of the first elastic member 3 abuts against the valve plug skirt 22, and the other end abuts against the first valve seat 12. By arranging the valve plug skirt 22 on the outside of the pilot valve plug 2 and arranging the first elastic member 3 in the lower area of ​​the outside of the pilot valve plug 2, the first elastic member 3 makes the pilot valve plug 2 stably abut against the push rod 4. When the flow resistance of the oil in 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 stability requirement of the shock absorber power value of the vehicle 10000.

[0122] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5-Figure 6 As shown, the drive assembly 8 is located on the side of the pilot valve plug 2 away from the first valve body 11, for example, the drive assembly 8 is located on the upper side of the pilot valve plug 2. 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, and the coil 81 is used to drive the magnetic core 82 to move.

[0123] 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 . When the coil 81 drives the magnetic core 82 to move, the magnetic core 82 drives the push rod 4 to move synchronously.

[0124] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5-Figure 6As shown, the drive assembly 8 further includes a fourth elastic member 83 and a fifth elastic member 84. The fourth elastic member 83 abuts against the magnetic core 82 to apply a force on the magnetic core 82 toward the pilot valve plug 2, and the fifth elastic member 84 abuts against the magnetic core 82 to apply a force on the magnetic core 82 away from the pilot valve plug 2. For example, the fourth elastic member 83 abuts against an end of the magnetic core 82 away from the pilot valve plug 2, and the fifth elastic member 84 abuts against an end of the magnetic core 82 close to the pilot valve plug 2. Figure 1 As shown, the fourth elastic member 83 stops at the upper end of the magnetic core 82 , and the fifth elastic member 84 stops at the lower end of the magnetic core 82 .

[0125] Specifically, refer to Figure 1-Figure 2 , Figure 5-Figure 6 As shown, the magnetic core 82 and the push rod 4 form a moving part. When the coil 81 is energized, the electromagnetic force drives the magnetic core 82 to move, and the magnetic core 82 drives the push rod 4 to move, so that the entire moving part moves, thereby changing the opening state of the pilot valve plug 2. When the coil 81 is de-energized, the fourth elastic member 83 and the fifth elastic member 84 work together to push the magnetic core 82 to reset, and the magnetic core 82 drives the push rod 4 to reset, thereby changing the force of the push rod 4 on the pilot valve plug 2. The setting of the fourth elastic member 83 and the fifth elastic member 84 also provides a double elastic support for the magnetic core 82, so that the magnetic core 82 can remain stable when subjected to the electromagnetic force, and is not prone to displacement or shaking, thereby improving the control accuracy and stability of the valve device 10. The clearance fit between the push rod 4 and the pilot valve plug 2 can act as a damping function to suppress the vibration of the pilot valve plug 2 during the opening process, 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.

[0126] Optionally, the fourth elastic member 83 may be a spring, a wave spring, etc., for example Figure 1-Figure 2 , Figure 5-Figure 6 As shown, the fourth elastic member 83 is a spring.

[0127] Optionally, the fifth elastic member 84 may be a spring, a wave spring, etc., for example Figure 1-Figure 2 , Figure 5-Figure 6 As shown, the fifth elastic member 84 is a spring.

[0128] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5-Figure 6 As shown, the drive assembly 8 further includes an outer shell 852 and an inner shell 851, the outer shell 852 is disposed outside at least a portion of the inner shell 851, the inner shell 851 is connected to the valve shell 6, a receiving cavity is formed inside the inner shell 851, and the coil 81 is located in the receiving cavity. Specifically, the outer shell 852 provides a safe and closed working environment for the inner shell 851, the coil 81, the magnetic core 82, etc., to avoid interference and damage from the external environment.

[0129] Optionally, the inner shell 851 and the valve outer shell 6 may be connected by threaded connection, snap connection, fastener connection, etc.

[0130] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5-Figure 6 As shown, the drive assembly 8 also includes 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 around the outer wall of the coil 81, the first guide sleeve 861 guides the upper end of the push rod 4, and 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 stops at the core cover 88, and the lower end of the magnetic isolation ring 89 is the base valve seat 5. Specifically, the coil coating plays a good protective and insulating role, the first guide sleeve 861 and the second guide sleeve 862 enable the push rod 4 to be accurately positioned and supported, and maintain the stability and consistency of the internal structure of the drive assembly 8, the second guide sleeve 862 can be installed in the core cover 88, and the second guide sleeve 862 can be installed 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, and the magnetic isolation ring 89 effectively isolates the magnetic field interference. Through the close matching 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.

[0131] In some embodiments, the magnetic core 82 and the push rod 4 are made of soft magnetic materials, which are magnetized in the coil 81 and are 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 stop against the pilot valve plug 2, and the axial electromagnetic force acts on the pilot valve plug 2 to affect the second pressure threshold for opening the pilot valve plug 2, thereby affecting the medium pressure of the accommodating chamber 13, and finally affecting the third pressure threshold for opening the first valve body 11, thereby changing the pressure flow characteristics of the valve device 10. Different working currents of the valve device 10 can control the electromagnetic force exerted on the push rod 4. The electromagnetic force is greater under high current conditions. The third pressure threshold for opening the first valve body 11 is different under different electromagnetic forces, thereby realizing the regulation of the pressure flow characteristics of the valve device 10. The pressure flow characteristics of the valve device 10 affect the damping force velocity characteristics 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.

[0132] Reference Figure 1-Figure 2 , Figure 5-Figure 6 , Figure 11-Figure 17As shown, the damping controller 100 according to the embodiment of the second aspect of the present application includes 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 connected; 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, the first valve device 10a and the second valve device 10b are both valve devices 10 of the above-mentioned embodiment, the medium outlet 61 and the third channel 7122 of the first valve device 10a are both connected to the first cavity 101, the medium outlet 61 and the third channel 7122 of the second valve device 10b are both connected to the second cavity 102, the second channel 7121 of the first valve device 10a is used to connect with the first device, and the second channel 7121 of the second valve device 10b is used to connect with the second device to adjust the communication damping between the first device and the second device.

[0133] The first valve device 10a and the second valve device 10b are both provided with a first elastic member 3 to control the flow damping force of the oil between the first device and the second device to be stable.

[0134] The first valve device 10a is also called a return valve device, and the second valve device 10b is also called a compression valve device.

[0135] According to the damping controller 100 of the embodiment of the present application, its valve device 10 is provided with a first elastic member 3 so that the fluctuation caused by the medium on the pilot valve plug 2 is smaller, thereby reducing the influence of the medium on the position of the pilot valve plug 2 and the first valve body 11, so that the damping force inside the valve device 10 is stable, and thus the damping force inside the damping controller 100 is stable.

[0136] In some embodiments of the present application, reference Figure 11-Figure 17 As shown, the controller body 110 further has a third cavity 103 , and the first cavity 101 and the second cavity 102 are connected through the third cavity 103 .

[0137] In some embodiments of the present application, reference Figure 11-Figure 17 As shown, the controller body 110 also has a fourth cavity 104 and a fifth cavity 105. The second channel 7121 of the first valve device 10a is connected to the fourth cavity 104, and the second channel 7121 of the second valve device 10b is connected to the fifth cavity 105. The first device is connected to the fourth cavity 104, and the second device is connected to the fifth cavity 105.

[0138] 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.

[0139] In some embodiments of the present application, the second channel 7121 of the first valve device 10a is used to connect with the third device, and the second 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 to the fourth cavity 104, and the fourth device and the second device are both connected to the fifth cavity 105.

[0140] In some embodiments of the present application, reference Figure 11-Figure 17 As shown, 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 to the fourth cavity 104, and the shock absorber interface 108 and the accumulator interface 109 are both connected to the fifth cavity 105. The first device is the central control cylinder, the second device is the shock absorber, the third device is the stiffness conversion valve, and the fourth device is the 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.

[0141] 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.

[0142] In some embodiments of the present application, the stiffness conversion valve is a normally open valve, and a stiffness accumulator filled with nitrogen is provided on the upper portion, and the filling pressure in the stiffness accumulator is 1.7 MPa.

[0143] The central control cylinder is connected to four damping controllers 100 at the same time, and is an oil system for four-wheel balancing of the vehicle 10000. The central control cylinder is externally connected to a gas compressible accumulator.

[0144] The accumulator interface 109 is externally connected to a gas-compressible accumulator, and the gas filling pressure in the accumulator is 1.5 MPa.

[0145] Fig.12Schematic diagram of the flow path in the damping controller 100 when the first valve device 10a and the second valve device 10b are not powered and the piston rod of the shock absorber is restored. Specifically, when the coil 81 of the valve device 10 is not powered, the piston rod in the shock absorber moves upward, and the oil in the central control cylinder and the stiffness accumulator flows from the fourth cavity 104 in the damping controller 100 through the first cavity 101, the third cavity 103, and the second cavity 102 to the fifth cavity 105. The oil pushes the first valve plate 72 in the first valve device 10a, enters the valve channel 62 inside the first valve device 10a, and flows into the pressure relief chamber 64 through the gap between the first valve body 11 and the protruding structure 63. Then the oil flows out from the medium outlet 61 of the first valve device 10a, first passes through the first cavity 101, then passes through the third cavity 103, and reaches the second cavity 102. Then the oil pressure pushes open the second valve plate 73 of the second valve device 10b at the third channel 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 from the second channel 7121 into the fifth cavity 105, and finally the oil flows to the shock absorber through the shock absorber interface 108. The flow resistance through the valve device 10 in this process is small, and the shock absorber behaves as "soft". The path is as follows Fig.12 As shown in A1→A2→A3→A4→A5.

[0146] Fig.13 Schematic diagram of the flow path in the damping controller 100 when the first valve device 10a and the second valve device 10b are not powered and the piston rod of the shock absorber is compressed. Specifically, when the coil 81 of the valve device 10 is not powered, the shock absorber piston rod moves downward, and the oil in the shock absorber flows from the fifth cavity 105 in the damping controller 100 through the second cavity 102, the third cavity 103, and the first cavity 101 to the fourth cavity 104. The oil pushes the first valve plate 72 in the second valve device 10b, enters the valve channel 62 inside the second valve device 10b, and flows into the pressure relief chamber 64 through the gap between the first valve body 11 and the protruding structure 63. Then the oil flows out from the medium outlet 61 of the second valve device 10b, first passes through the second cavity 102, then passes through the third cavity 103, and reaches the first cavity 101. Then the oil pressure pushes open the second valve plate 73 of the first valve device 10a at the third channel 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 from the second channel 7121 into the fourth chamber 104. Finally, the oil flows to the central control cylinder through the central control cylinder interface 106 and flows to the stiffness accumulator through the stiffness conversion valve interface 107. The flow resistance through the valve device 10 in this process is small, and the shock absorber behaves as "soft". The path is as follows Fig.13 As shown in A6→A7→A8→A9→A10.

[0147] Fig.141 is a schematic diagram of the flow path in the damping controller 100 when the first valve device 10a and the second valve device 10b are energized and the piston rod of the shock absorber is restored. Fig.15 1 is another schematic diagram of the flow path in the damping controller 100 when the first valve device 10a and the second valve device 10b are energized and the piston rod of the shock absorber is restored. Fig.14 When the coil 81 of the valve device 10 is energized, the shock absorber piston rod moves upward, and the oil in the central control cylinder and the stiffness accumulator flows from the fourth cavity 104 in the damping controller 100 through the first cavity 101, the third cavity 103, and the second cavity 102 to the fifth cavity 105. The oil pushes the first valve plate 72 in the first valve device 10a. Since the valve device 10 is energized, the pilot valve plug 2 is in a state of blocking the pilot channel 111. The oil pressure needs to overcome the thrust of the pilot valve plug 2 to enter the valve channel 62 inside the first valve device 10a (here the damping force can be adjusted by the current input to the valve device 10). Subsequently, the oil flows out from the first valve hole 112 and the pilot channel 111 to the first chamber 52, first passes through the base valve hole 51 to reach the pressure relief chamber 64, then enters the first cavity 101 through the medium outlet 61, and then passes through the third cavity 103 to reach the second cavity 102. Then the oil pressure pushes open the second valve plate 73 of the second valve device 10b at the third channel 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 from the second channel 7121 into the fifth cavity 105, and finally the oil flows to the shock absorber through the shock absorber interface 108. The flow resistance through the valve device 10 in this process is relatively large, and the shock absorber appears to be "hard". The path is as follows Fig.14 As shown in A1→B2→A3→A4→A5.

[0148] Reference Fig.15 When the oil pressure in the fourth cavity 104 in the damping controller 100 further increases, the oil pushes the first valve body 11 of the second valve device 10b and flows out from the gap between the first valve body 11 and the protruding structure 63, passing through the medium outlet 61 of the second valve device 10b, the first cavity 101, the third cavity 103, the second cavity 102, the third channel 7122 of the second valve device 10b, the second chamber 713 of the second valve device 10b, the second channel 7121 of the second valve device 10b, and the fifth cavity 105 to the shock absorber. The path is as follows Fig.15 As shown in A1→A2→A3→A4→A5.

[0149] Fig.16 1 is a schematic diagram of the flow path in the damping controller 100 when the first valve device 10a and the second valve device 10b are energized and the piston rod of the shock absorber is compressed. Fig.171 is another schematic diagram of the flow path in the damping controller 100 when the first valve device 10a and the second valve device 10b are energized and the piston rod of the shock absorber is compressed. Fig.16 When the coil 81 of the valve device 10 is energized, the shock absorber piston rod moves upward, and the oil in the central control cylinder and the stiffness accumulator flows from the fifth cavity 105 in the damping controller 100 through the second cavity 102, the third cavity 103, and the first cavity 101 to the fourth cavity 104. The oil pushes the first valve plate 72 in the second valve device 10b. Since the valve device 10 is energized, the pilot valve plug 2 is in a closed state. The oil pressure needs to overcome the thrust of the pilot valve plug 2 to enter the valve channel 62 inside the second valve device 10b (here the damping force can be adjusted by inputting the current of the valve device 10). Then the oil flows out from the first valve hole 112 and the pilot channel 111 to the first chamber 52, first passes through the base valve hole 51 to reach the pressure relief chamber 64, then enters the first cavity 101 through the medium outlet 61, and then passes through the third cavity 103 to reach the first cavity 101. Then the oil pressure pushes open the second valve plate 73 of the first valve device 10a at the third channel 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 from the second channel 7121 into the fourth chamber 104. Finally, the oil flows to the central control cylinder through the central control cylinder interface 106 and flows to the stiffness accumulator through the stiffness conversion valve interface 107. The flow resistance through the valve device 10 in this process is relatively large, and the shock absorber appears to be "hard". The path is as follows Fig.16 As shown in A6→B7→A8→A9→A10.

[0150] Reference Fig.17 When the oil pressure in the fifth cavity 105 in the damping controller 100 further increases, the oil pushes the first valve body 11 of the first valve device 10a and flows out from the gap between the first valve body 11 and the protruding structure 63, passing through the medium outlet 61 of the first valve device 10a, the second cavity 102, the third cavity 103, the first cavity 101, the third channel 7122 of the first valve device 10a, the second chamber 713 of the first valve device 10a, the second channel 7121 of the first valve device 10a, and the fourth cavity 104 to flow into the central control cylinder and the stiffness conversion valve. The path is as follows Fig.17 As shown in A6→A7→A8→A9→A10. When the damping force is too large and the pressure exceeds the pressure of the pressure reducing accumulator, part of the oil will also flow to the pressure reducing accumulator. The path is as follows Fig.17 As shown in A11.

[0151] Reference Figure 11-Figure 18As shown, the suspension damping control system 1000 according to the third embodiment of the present application includes the damping controller 100 of the above embodiment, 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.

[0152] According to the suspension damping control system 1000 of the embodiment of the present application, the valve device 10 of the damping controller 100 is provided with a first elastic member 3 so that the fluctuation of the pilot valve plug 2 caused by the medium is smaller, thereby reducing the influence of the medium on the position of the pilot valve plug 2 and the first valve body 11, so that the damping force inside the valve device 10 is stable, and thus the damping force of the suspension damping control system 1000 is stabilized.

[0153] In some embodiments of the present application, the suspension damping control system 1000 further includes a stiffness conversion valve, and the stiffness conversion valve and the central control cylinder are both connected to the second 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.

[0154] In some embodiments of the present application, the suspension damping control system 1000 further includes an accumulator, and the accumulator and the shock absorber are both connected to the second 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.

[0155] It is understandable that the medium flowing in the damping controller 100 and inside the valve device 10 may be gas, a gas-liquid mixture or other media in addition to oil.

[0156] Reference Fig.19 As shown, the vehicle 10000 according to the fourth embodiment of the present application includes the suspension damping control system 1000 of the above embodiment.

[0157] According to the vehicle 10000 of the embodiment of the present application, the valve device 10 of the suspension damping control system 1000 is provided with a first elastic member 3 so that the fluctuation of the medium on the pilot valve plug 2 is smaller, thereby reducing the influence of the medium on the position of the pilot valve plug 2 and the first valve body 11, thereby stabilizing the damping force inside the valve device 10, and further stabilizing the damping force of the suspension damping control system 1000.

[0158] In the description of the present application, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0159] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0160] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0161] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A valve device (10), characterized in that: include: First channel and second channel; a first valve body (11), the first valve body (11) being movable to adjust flow damping between the first channel and the second channel, the first valve body (11) having a pilot channel (111), the pilot channel (111) being in communication with the second channel; a pilot valve plug (2), the pilot valve plug (2) being arranged on one side of the first valve body (11), the pilot valve plug (2) being adapted to open or block the pilot channel (111), and when the pilot valve plug (2) opens the pilot channel (111), the pilot channel (111) can be connected to the first channel through a third channel; A driving assembly (8), the driving assembly (8) being used to drive the pilot valve plug (2) to move; and A first elastic member (3), one end of the first elastic member (3) abuts against the pilot valve plug (2) to reduce fluctuations caused by the medium on the pilot valve plug (2).

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

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

4. The valve device (10) according to claim 1, characterized in that 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).

5. The valve device (10) according to claim 4, characterized in that One of the first valve body (11) and the first valve seat (12) has a guide cavity, and the other at least partially extends into the guide cavity to cooperate with the one for guidance. The first valve body (11) can move relative to the first valve seat (12) in a direction approaching or moving away from the pilot valve plug (2).

6. The valve device (10) according to claim 4, characterized in that The other end of the first elastic member (3) abuts against the first valve seat (12), and the first elastic member (3) exerts a force on the pilot valve plug (2) away from the first valve body (11).

7. The valve device (10) according to claim 4, characterized in that The valve device (10) further comprises a valve housing (6); the first valve body (11) is movable relative to the valve housing (6); a medium outlet (61) is provided on the valve housing (6); the medium outlet (61) is configured as at least a portion of the first channel; a pressure relief chamber (64) is provided in the valve housing (6); the medium outlet (61) is communicated with the pressure relief chamber (64).

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

9. The valve device (10) according to claim 7, characterized in that A valve channel (62) is formed in the valve housing (6), the valve channel (62) is configured as at least a part of the second channel, the pressure relief chamber (64) is configured as at least a part 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).

10. The valve device (10) according to claim 9, characterized in that An accommodating chamber (13) is formed between the first valve seat (12) and the first valve body (11), and the pilot channel (111) is in communication with the accommodating chamber (13); The first valve body (11) is provided with a first valve hole (112), and the valve channel (62) is connected to the accommodating chamber (13) through the first valve hole (112).

11. The valve device (10) according to claim 10, characterized in that The valve device (10) further comprises a second elastic member (14), wherein the second elastic member (14) is arranged in the accommodating 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).

12. The valve device (10) according to claim 10, characterized in that The pilot channel (111) comprises 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 the radial channel (1112) extends along the radial direction of the first valve body (11) to the accommodating chamber (13).

13. The valve device (10) according to claim 9, characterized in that A protruding structure (63) extending radially 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) and the protruding structure (63) are selectively fitted or separated, and the pressure relief chamber (64) and the valve channel (62) are suitable for being connected through a gap between the first valve body (11) and the protruding structure (63).

14. The valve device (10) according to claim 9, characterized in that The valve device (10) further comprises a second valve assembly (7), wherein the second valve assembly (7) comprises a second valve body (71), wherein the second valve body (71) is mounted on the valve housing (6), and wherein the second valve body (71) has a second chamber (713), and the communication damping between the second chamber (713) and the valve channel (62) is adjustable.

15. The valve device (10) according to claim 14, characterized in that The second valve assembly (7) includes a first valve plate (72), and the second valve body (71) has a first channel (7111), the first channel (7111) is used to connect the second chamber (713) with the valve channel (62), and the first valve plate (72) can block or open the first channel (7111).

16. The valve device (10) according to claim 15, characterized in that The second valve body (71) has a second passage (7121) and a third passage (7122), the second chamber (713) is in communication with the second passage (7121), and the third passage (7122) is selectively in communication with the second chamber (713).

17. The valve device (10) according to claim 16, characterized in that The second valve assembly (7) further comprises a second valve plate (73), and the second valve plate (73) is capable of blocking or opening the third channel (7122).

18. The valve device (10) according to claim 17, characterized in that The second valve assembly (7) further comprises a third elastic member (74), wherein the third elastic member (74) is arranged in the second chamber (713), and the third elastic member (74) is used to apply an elastic force to the second valve plate (73) to move in a direction of blocking the third channel (7122).

19. The valve device (10) according to claim 18, characterized in that The second valve body (71) comprises: a second valve seat (711), the second valve seat (711) being mounted on the valve housing (6), the first passage (7111) being formed on the second valve seat (711); and A second valve body (712), wherein the second valve body (712) is mounted on the second valve seat (711), and the second channel (7121) and the third channel (7122) are formed on the second valve body (712).

20. The valve device (10) according to claim 19, characterized in that In the radial direction of the second valve body (712), the third channel (7122) is separated from the second channel (7121).

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

22. The valve device (10) according to claim 21, 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).

23. The valve device (10) according to claim 21, characterized in that The valve device (10) further comprises a base valve seat (5), the drive assembly (8) being arranged on a side of the base valve seat (5) facing away from the pilot valve plug (2), the base valve seat (5) having a push rod hole, and the push rod (4) passing through the push rod hole.

24. The valve device (10) according to claim 23, characterized in that The other end of the first elastic member (3) abuts against the base valve seat (5), and the first elastic member (3) applies a force on the pilot valve plug (2) toward the first valve body (11).

25. The valve device (10) according to any one of claims 21 to 24, characterized in that The driving component (8) is located on a side of the pilot valve plug (2) away from the first valve body (11), and the driving component (8) comprises a coil (81) and a magnetic core (82), wherein the magnetic core (82) is fixedly connected to the push rod (4), and the coil (81) is used to drive the magnetic core (82) to move.

26. The valve device (10) according to claim 25, characterized in that The drive assembly (8) further comprises a fourth elastic member (83) and a fifth elastic member (84), wherein the fourth elastic member (83) abuts against the magnetic core (82) to apply a force to the magnetic core (82) toward the pilot valve plug (2), and the fifth elastic member (84) abuts against the magnetic core (82) to apply a force to the magnetic core (82) away from the pilot valve plug (2).

27. The valve device (10) according to any one of claims 1 to 3, characterized in that The pilot valve plug (2) includes a valve plug body (21) and a valve plug skirt (22), wherein the valve plug skirt (22) is connected to the valve plug body (21), and the valve plug skirt (22) extends radially outwardly along the valve plug body (21). The valve plug body (21) is suitable for opening or blocking the pilot channel (111), and one end of the first elastic member (3) stops at the valve plug skirt (22).

28. A damping controller (100), characterized in that: include: A controller body (110), the controller body (110) comprising a first cavity (101) and a second cavity (102), the first cavity (101) and the second cavity (102) being connected; A first valve device (10a) and a second valve device (10b), wherein 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); the first valve device (10a) and the second valve device (10b) are both valve devices (10) according to any one of claims 1 to 27; the medium outlet (61) and the third channel (7122) of the first valve device (10a) are both connected to the first cavity (101), and the medium outlet (61) and the third channel (7122) of the second valve device (10b) are both connected to the second cavity (102); the second channel (7121) of the first valve device (10a) is used to connect to the first device, and the second channel (7121) of the second valve device (10b) is used to connect to the second device, so as to adjust the communication damping between the first device and the second device.

29. The damping controller (100) according to claim 28, characterized in that The controller body (110) further comprises a third cavity (103), and the first cavity (101) and the second cavity (102) are connected via the third cavity (103).

30. A suspension damping control system (1000), characterized in that: Comprising the damping controller (100) of claim 28 or 29, the first device is a central control cylinder, and the second device is a shock absorber.

31. The suspension damping control system (1000) according to claim 30, characterized in that: The suspension damping control system (1000) further comprises a stiffness conversion valve, wherein the stiffness conversion valve and the central control cylinder are both connected to the second channel (7121) of the first valve device (10a).

32. The suspension damping control system (1000) according to claim 30, characterized in that: The suspension damping control system (1000) further comprises an accumulator, wherein both the accumulator and the shock absorber are connected to the second channel (7121) of the second valve device (10b).

33. A vehicle (10000), characterized in that: A suspension damping control system (1000) comprising any one of claims 30-32.

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