Valve, shock absorber, chassis and vehicle

Abstract

The utility model discloses a valve, a shock absorber, a chassis and a vehicle, and the valve comprises a valve body, a valve core, a valve rod and a spring, the driving assembly is arranged on the valve body; the first valve element is arranged in the valve body and can move between a first position and a second position, the driving assembly is used for driving the first valve element to move from the second position to the first position, the interior of the valve body is divided into a first cavity and a second cavity by the first valve element, and a first overflowing hole is formed in the first valve element; the first cavity and the second cavity are communicated through a first overflowing hole, the first cavity is communicated with the inlet, the first valve element is provided with a first pressure-bearing surface and a second pressure-bearing surface, and the pressure-bearing area of the first pressure-bearing surface is larger than that of the second pressure-bearing surface; the elastic reset piece abuts against the position between the first valve element and the inner wall of the valve body, and the elastic reset piece constantly pushes the first valve element in the direction towards the second position. According to the valve, normal use of the valve is effectively guaranteed, and control and adjustment of damping force are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a valve, a shock absorber, a chassis and a vehicle. Background Art

[0002] Vehicles are equipped with shock absorbers in the wheel area to reduce the bumps of the vehicle during driving. When the vehicle body and wheels move relative to each other, the piston in the shock absorber moves up and down, and the oil in the shock absorber cavity repeatedly flows from one cavity to another through different pores, and converts the vibration energy into heat energy of the oil and gas and dissipates it into the atmosphere, so that the shock absorber can work efficiently within a lower temperature range.

[0003] In the related art, the shock absorber contains multiple valves, which is not conducive to adjusting the damping force during the operation of the shock absorber. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a valve, which is configured to overcome the action of the driving component on the first valve core to open the connection between the inlet and the outlet by setting the pressure difference between the first pressure-bearing surface and the second pressure-bearing surface and the elastic reset member to work together to overcome the action of the driving component on the first valve core to open the connection between the inlet and the outlet, which is conducive to controlling and adjusting the damping force.

[0005] The second object of the utility model is to provide a shock absorber using the valve.

[0006] The third object of the present utility model is to provide a chassis using the above-mentioned shock absorber.

[0007] The fourth object of the present utility model is to provide a vehicle using the valve, the shock absorber, or the chassis.

[0008] The valve according to the first embodiment of the utility model comprises: a valve body, on which an inlet and an outlet are formed; a drive assembly, which is arranged on the valve body; a first valve core, which is arranged in the valve body, and the first valve core can move between a first position and a second position, the first valve core cooperates with the drive assembly, and the drive assembly is used to drive the first valve core to move from the second position to the first position, the first valve core divides the interior of the valve body into a first chamber and a second chamber, the first valve core is formed with a first flow hole, the first chamber and the second chamber are connected through the first flow hole, and the first chamber The first valve core is connected to the inlet, when the first valve core is located at the first position, the first valve core blocks the connection between the first chamber and the outlet, the first valve core has a first pressure-bearing surface and a second pressure-bearing surface, the side surface of the first valve core facing the first chamber is configured as the first pressure-bearing surface, the side surface of the first valve core facing the second chamber is configured as the second pressure-bearing surface, the pressure-bearing area of ​​the first pressure-bearing surface is greater than the pressure-bearing area of ​​the second pressure-bearing surface; an elastic return member, the elastic return member stops between the first valve core and the inner wall of the valve body, and the elastic return member often pushes the first valve core toward the second position.

[0009] According to the valve of the utility model, when the valve is not energized, under the action of the elastic reset member, the first valve core is pushed to move upward, the inlet, the first chamber and the outlet are connected, and the valve is in an open state, which effectively ensures that the fluid can flow out of the valve body, thereby facilitating the normal use of the valve, and under the action of the elastic reset member, the valve is in a normally open state, which helps the valve to be used normally for a long time. When the valve is energized, the drive assembly can drive the first valve core to move downward, thereby reducing the difficulty of operation, facilitating control, and improving the flexibility of controlling the fluid flow rate. In addition, by setting the pressure on the first pressure-bearing surface to be greater than the pressure on the second pressure-bearing surface, the pressure difference causes the first valve core to move upward, and the size of the connection opening of the first valve core is adjusted by the size of the pressure difference to adjust and control the damping force, which is more conducive to controlling the size of the flow to adjust the damping force of the shock absorber.

[0010] According to some embodiments of the present invention, the first valve core is configured to change the degree of connection between the inlet and the outlet through the first valve core to adjust the flow rate of the outlet when the pressure difference between the pressure applied to the first pressure-bearing surface and the pressure applied to the second pressure-bearing surface changes.

[0011] According to some embodiments of the utility model, the driving assembly includes: a fixed iron core, which is arranged on the valve body; a moving iron core, which is movably arranged on a side of the fixed iron core away from the first valve core along the moving direction of the first valve core, and the moving iron core cooperates with the first valve core. When the moving iron core moves toward the inlet, the moving iron core pushes the first valve core toward the first position to adjust the flow rate of the outlet.

[0012] According to some embodiments of the utility model, a sliding sealing groove is formed on the fixed iron core; the first valve core has a first sliding sealing portion, and the first sliding sealing portion cooperates with the sliding sealing groove in a sliding seal.

[0013] According to some embodiments of the utility model, a guide hole is formed on the fixed iron core, and a guide column is provided on the first valve core. The guide column passes through the guide hole and stops against the moving iron core.

[0014] According to some embodiments of the utility model, at least one flow hole is formed on the fixed iron core; the drive assembly further includes: a core cover, which is arranged on the moving iron core, and the core cover and the moving iron core jointly define a moving iron core cavity, and the moving iron core is movably arranged in the moving iron core cavity, and the fluid entering from the inlet flows to the moving iron core cavity through the flow hole through the inside of the valve body.

[0015] According to some embodiments of the utility model, a pressure-bearing groove is formed on a side surface of the first valve core adjacent to the inlet, the first chamber is defined between the pressure-bearing groove and the valve body, the inner wall surface of the pressure-bearing groove is configured as the first pressure-bearing surface, and one end of the first flow hole passes through the bottom wall of the pressure-bearing groove.

[0016] According to some embodiments of the utility model, the valve body comprises a first valve cavity and a second valve cavity, the inlet is formed on the first valve cavity, the outlet is formed on the side wall of the second valve cavity, the first valve core is movably disposed in the second valve cavity, the first valve cavity and the second valve cavity are connected through at least one second flow hole, and the first valve core is often separated from the second flow hole to connect the inlet and the outlet.

[0017] According to some embodiments of the present invention, the second flow hole is formed on a side surface of the second valve cavity adjacent to the inlet, and the outer peripheral side of the second flow hole has a sealing surface; the first valve core abuts against the sealing surface to cut off the connection between the inlet and the outlet.

[0018] According to some embodiments of the present invention, a unidirectional conductive structure is provided at the inlet, and the unidirectional conductive structure is configured to make the fluid flowing through the inlet flow unidirectionally toward the second flow hole.

[0019] According to some embodiments of the present invention, the one-way conducting structure includes: a one-way valve plate, which is movably disposed in the first valve cavity and usually covers the inlet.

[0020] According to some embodiments of the present invention, the flow area of ​​the outlet is larger than the maximum flow area between the valve body and a side of the first valve core adjacent to the inlet when the inlet and the outlet are connected.

[0021] The shock absorber according to the embodiment of the second aspect of the utility model comprises the valve according to the embodiment of the first aspect of the utility model.

[0022] The chassis according to the embodiment of the third aspect of the utility model includes the shock absorber according to the embodiment of the second aspect of the utility model.

[0023] The vehicle according to the fourth aspect of the utility model comprises the valve according to the first aspect of the utility model, or the shock absorber according to the second aspect of the utility model, or the chassis according to the third aspect of the utility model.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 is a schematic diagram of a valve according to an embodiment of the utility model, wherein the valve is in a non-powered state;

[0027] Figure 2 is a schematic diagram of a valve body of a valve according to an embodiment of the utility model;

[0028] Figure 3 is a cross-sectional view of a valve body of a valve according to an embodiment of the utility model;

[0029] Figure 4 is a schematic diagram of a first valve core of a valve according to an embodiment of the utility model;

[0030] Figure 5 is a cross-sectional view of a first valve core of a valve according to an embodiment of the utility model;

[0031] Figure 6 is a schematic diagram of a fixed iron core of a valve according to an embodiment of the utility model;

[0032] Figure 7 is a cross-sectional view of a fixed iron core of a valve according to an embodiment of the utility model;

[0033] Figure 8 It is a schematic diagram of fluid flow in the power-on state of the valve according to an embodiment of the utility model.

[0034] Reference numerals:

[0035] 100. Valve;

[0036] 1. Valve body; 11. Inlet; 12. Outlet; 13. First valve chamber;

[0037] 14. second valve chamber; 15. second flow hole; 151. sealing surface;

[0038] 16. One-way conduction structure; 161. One-way valve plate;

[0039] 17. First chamber; 18. Second chamber;

[0040] 2. first valve core; 21. first pressure-bearing surface; 22. second pressure-bearing surface;

[0041] 23. first sliding sealing portion; 24. guide column; 25. first flow hole;

[0042] 26. pressure-bearing groove; 261. first pressure-bearing groove; 262. second pressure-bearing groove;

[0043] 3. driving assembly; 31. fixed iron core; 311. sliding sealing groove; 312. guide hole;

[0044] 313, flow hole; 32, moving iron core; 33, iron core cover; 331, moving iron core cavity;

[0045] 4. Elastic reset part; 5. Coil assembly; 6. Coil housing; 7. Magnetic isolation ring; 8. Magnetic conductive plate. DETAILED DESCRIPTION

[0046] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figure 1-Figure 8 The valve 100 according to the first embodiment of the utility model is described. The valve 100 of the present application is described in detail by taking the valve 100 used in a shock absorber as an example.

[0047] like Figure 1 and Figure 2 As shown, the valve 100 according to the embodiment of the first aspect of the utility model includes a valve body 1, a drive assembly 3, a first valve core 2 and an elastic return member 4.

[0048] Specifically, the valve body 1 is formed with an inlet 11 and an outlet 12. Figure 1 and Figure 2 In the example of , the inlet 11 is formed at the lower end of the valve body 1, and the outlet 12 is formed on the side wall of the valve body 1. In this way, a fluid (such as oil) can flow into the valve body 1 from the inlet 11 of the valve body 1, and then flow out of the valve body 1 through the outlet 12, thereby facilitating the fluid to pass through the interior of the valve body 1, which is beneficial for the valve 100 to adjust and control the damping force.

[0049] Combination Figure 1 The driving assembly 3 is arranged on the valve body 1, the first valve core 2 is arranged in the valve body 1, the first valve core 2 can move between a first position and a second position, the first valve core 2 cooperates with the driving assembly 3, and the driving assembly 3 is used to drive the first valve core 2 to move from the second position to the first position. Figure 1 In the example, the drive assembly 3 is connected to the valve body 1, and the first valve core 2 can move between the first position and the second position in the valve body 1 along the up and down direction, and the lower end of the first valve core 2 is detachably matched with the inner wall of the valve body 1. When the valve 100 is energized, the drive assembly 3 starts to work, and the drive assembly 3 drives the first valve core 2 to gradually move downward (that is, from the second position to the first position). When the lower end of the first valve core 2 contacts the inner wall of the valve body 1, the first valve core 2 separates the inlet 11 and the outlet 12. At this time, the first valve core 2 is in the first position, and the valve 100 is in a closed state (not shown in the figure). When the lower end of the first valve core 2 is separated from the inner wall of the valve body 1, the inlet 11 and the outlet 12 are connected. When the connection opening between the inlet 11 and the outlet 12 is maximum, the first valve core 2 is in the second position (such as Figure 1 shown).

[0050] With such a configuration, the driving assembly 3 can be used to drive the first valve core 2 to move downward to adjust the distance between the lower end of the first valve core 2 and the inner wall of the valve body 1, thereby adjusting the flow of the fluid flowing through the lower side of the first valve core 2 and the inner wall of the valve body 1, and adjusting the amount of fluid at the outlet 12. When the valve 100 is used for a shock absorber, the damping force is adjusted, thereby reducing the difficulty of operation, making it easy to control, and also improving the flexibility of controlling the fluid flow rate. In addition, through the action of the driving assembly 3, the movement reliability of the first valve core 2 is improved, thereby improving the reliability of the use of the valve 100.

[0051] Combination Figure 1 , the first valve core 2 divides the interior of the valve body 1 into a first chamber 17 and a second chamber 18, and a first flow hole 25 is formed on the first valve core 2. The first chamber 17 and the second chamber 18 are connected through the first flow hole 25, and the first chamber 17 is connected to the inlet 11. When the first valve core 2 is in the first position, the first valve core 2 blocks the connection between the first chamber 17 and the outlet 12. For example, Figure 1In the example, a first chamber 17 is defined between the lower portion of the first valve core 2 and the valve body 1, a second chamber 18 is defined between the upper portion of the first valve core 2 and the valve body 1, a first flow hole 25 penetrates the first valve body 1 in the up-down direction, and three first flow holes 25 are formed on the first valve body 1. Thus, when the first valve core 2 is located at the first position, the fluid can enter the first chamber 17 from the inlet 11, and then flow into the second chamber 18 along the first flow hole 25, so as to facilitate the fluid to flow to the second chamber 18, so as to facilitate the flow of the fluid on the first valve core 2. In addition, the first flow hole 25 has a simple structure and is easy to produce and process, so as to facilitate the production and processing of the first valve core 2. Moreover, the layout of the first chamber 17, the second chamber 18 and the first flow hole 25 is reasonable, which is conducive to the smooth flow of the fluid in the valve body 1, so as to facilitate the normal use of the valve 100. Combined with Figure 1 and Figure 5 The first valve core 2 has a first pressure-bearing surface 21 and a second pressure-bearing surface 22. The side surface of the first valve core 2 facing the first chamber 17 is configured as the first pressure-bearing surface 21, and the side surface of the first valve core 2 facing the second chamber 18 is configured as the second pressure-bearing surface 22. The pressure-bearing area of ​​the first pressure-bearing surface 21 is greater than the pressure-bearing area of ​​the second pressure-bearing surface 22.

[0052] For example, in Figure 1 and Figure 5 In the example, when the fluid flows through the first chamber 17, the contact surface with the first valve core 2 is the first pressure-bearing surface 21, and when the fluid flows through the second chamber 18, the contact surface with the first valve core 2 is the second pressure-bearing surface 22. The pressure-bearing area of ​​the first pressure-bearing surface 21 is the contact area between the lower side of the first valve core 2 and the fluid in the up-down direction (e.g. Figure 5 The s 1 ), the pressure-bearing surface of the second pressure-bearing surface 22 is the contact area between the upper end surface of the first valve core 2 and the fluid in the up-down direction (such as Figure 5 The s 2 ).

[0053] When the inlet 11 is separated from the outlet 12 , that is, when the first valve core 2 is in the first position, the fluid flowing in from the inlet passes through the first pressure-bearing surface 21 of the first cavity 17 and then flows along the first flow hole 25 to the second pressure-bearing surface 22 of the second cavity 18 . In this process, the amount of fluid in contact with the first pressure-bearing surface 21 is greater than the amount of fluid in contact with the second pressure-bearing surface 22, so that the pressure on the first pressure-bearing surface 21 is greater than the pressure on the second pressure-bearing surface 22. Under the combined action of the pressure on the first pressure-bearing surface 21 and the elastic reset member 4, the force of the drive assembly 3 on the first valve core 2 and the fluid pressure on the second pressure-bearing surface 22 are overcome to push the first valve core 2 to move upward (i.e., from the first position to the second position), so that the first chamber 17 is connected to the outlet 12, and the inlet 11 is connected to the outlet 12, effectively ensuring that the fluid can flow out of the valve body 1, which is beneficial to the normal use of the valve 100, and the size of the pressure difference between the first pressure-bearing surface 21 and the second pressure-bearing surface 22 can be used to adjust the size of the connection opening of the first valve core 2 to adjust and control the damping force. Moreover, the first valve core 2 is opened by the fluid pressure, which helps to shorten the response time of the valve 100. In addition, the structure of the first valve core 2 is simple, and the pressure difference can be achieved by setting the area difference between the first pressure-bearing surface 21 and the second pressure-bearing surface 22. It should be noted that the area of ​​the first pressure-bearing surface 21 and the area of ​​the second pressure-bearing surface 22 can be set according to the specific use to better meet the actual application. The "pressure-bearing surface" may refer to the surface of the first valve core 2 that contacts the fluid and is subjected to the fluid pressure.

[0054] Combination Figure 1 , the elastic reset member 4 stops between the first valve core 2 and the inner wall of the valve body 1, and the elastic reset member 4 always pushes the first valve core 2 toward the second position. Figure 1 In the example, the lower end of the elastic reset member 4 abuts against the inner wall of the valve body 1, and the upper end of the elastic reset member 4 abuts against the first valve core 2. When the first valve core 2 is in the first position, the elastic reset member 4 is in a compressed state.

[0055] When the valve 100 is not powered, the downward driving force of the driving assembly 3 on the first valve core 2 disappears, and the elastic reset member 4 can push the first valve core 2 to move upward, so that the first valve core 2 is in an open state, that is, the first valve core 2 is located in the second position, and the inlet 11 is connected to the outlet 12. Moreover, when the valve 100 is not powered, under the action of the elastic reset member 4, the first valve body 1 is always in an open state (that is, the valve 100 can be a normally open valve 100), so that the valve 100 can be used normally for a long time, thereby improving the performance of the valve 100.

[0056] When the valve 100 is powered on, the driving assembly 3 applies a downward force to the first valve core 2, and at the same time, the elastic reset member 4 applies an upward elastic force to the first valve core 2. When the fluid flows to the first valve core 2, the fluid presses the first valve core 2. Under the pressure difference between the first pressure-bearing surface 21 and the second pressure-bearing surface 22, the fluid pressure at the first pressure-bearing surface 21 and the elastic force of the elastic reset member 4 work together to overcome the driving force of the driving assembly 3 and the pressure at the second pressure-bearing surface 22, so that the first valve core 2 gradually moves upward, the inlet 11 and the outlet 12 are connected, and the flow rate of the outlet 12 gradually increases. On the contrary, when the above-mentioned driving force of the driving assembly 3 and the pressure at the second pressure-bearing surface 22 are greater than the fluid pressure at the first pressure-bearing surface 21 and the elastic force of the elastic reset member 4, the flow rate of the outlet 12 gradually decreases until the inlet 11 and the outlet 12 are cut off. Thus, through the driving of the driving assembly 3, the elastic force of the elastic reset member 4, and the joint action of the first pressure-bearing surface 21 and the second pressure-bearing surface 22, the distance of the first valve core 2 moving upward and the distance of the first valve core 2 moving downward can be adjusted, so that the valve 100 is a valve 100 with dual adjustable damping force, which is more conducive to adjusting the connection opening of the first valve core 2, and further more conducive to controlling the size of the flow to adjust the damping force of the shock absorber. For example, the elastic reset member 4 can be set as a spring, but is not limited to this. According to the valve 100 of the utility model, when the valve 100 is not powered, under the action of the elastic reset member 4, the first valve core 2 is pushed to move upward, the inlet 11, the first chamber 17 and the outlet 12 are connected, and the valve 100 is in an open state, which effectively ensures that the fluid can flow out of the valve body 11, thereby facilitating the normal use of the valve 100, and under the action of the elastic reset member 4, the valve 100 is in a normally open state, which helps the valve 100 to be used normally for a long time. When the valve 100 is powered on, the driving assembly 3 can drive the first valve core 2 to move downward, thereby reducing the difficulty of operation, facilitating control, and improving the flexibility of controlling the fluid flow rate. In addition, by setting the pressure on the first pressure-bearing surface 21 to be greater than the pressure on the second pressure-bearing surface 22, the pressure difference causes the first valve core 2 to move upward, and the size of the communication opening of the first valve core 2 is adjusted by the size of the pressure difference to adjust and control the damping force, which is more conducive to controlling the size of the flow to adjust the damping force of the shock absorber.

[0057] According to some embodiments of the utility model, the first valve core 2 is configured such that when the pressure difference between the pressure on the first pressure-bearing surface 21 and the pressure on the second pressure-bearing surface 22 changes, the opening of the connection between the inlet 11 and the outlet 12 changes through the first valve core 2 to adjust the flow rate of the outlet 12. For example, when the pressure difference between the pressure on the first pressure-bearing surface 21 and the pressure on the second pressure-bearing surface 22 is large, the opening of the connection of the first valve core 2 is large, and at this time, the flow rate of the fluid flowing between the first pressure-bearing surface 21 and the valve body 1 is large, that is, the flow rate at the outlet 12 is large. When the pressure difference between the pressure on the first pressure-bearing surface 21 and the pressure on the second pressure-bearing surface 22 is small, the opening of the connection of the first valve core 2 is small, and at this time, the flow rate of the fluid flowing between the second pressure-bearing surface 22 and the valve body 1 is small, that is, the flow rate at the outlet 12 is small. Therefore, by adjusting the pressure difference between the first pressure-bearing surface 21 and the second pressure-bearing surface 22, the opening and closing degree of the first valve core 2 itself can be adjusted, thereby adjusting the amount of fluid flowing out of the outlet 12 per unit time, and then it is easy to control the amount of fluid flowing out of the valve 100, so that the adjustment range is larger, which is beneficial to control the damping force.

[0058] According to some embodiments of the present invention, referring to Figure 1 The driving assembly 3 includes a fixed iron core 31 and a moving iron core 32. The fixed iron core 31 is arranged on the valve body 1. The moving iron core 32 is movably arranged on a side of the fixed iron core 31 away from the first valve core 2 along the moving direction of the first valve core 2. The moving iron core 32 cooperates with the first valve core 2. When the moving iron core 32 moves toward the inlet 11, the moving iron core 32 pushes the first valve core 2 to move toward the first position to adjust the flow of the outlet 12. For example, in Figure 1 In the example, the moving iron core 32 is arranged above the fixed iron core 31, and the moving iron core 32 can move in the up and down direction. After the valve 100 is energized, the moving iron core 32 can drive the first valve core 2 to move downward to adjust the size of the interval between the lower end surface of the first valve core 2 and the valve body 1, that is, to adjust the connection opening of the first valve core 2, thereby adjusting the flow rate at the outlet 12. Such a configuration facilitates the adjustment of the movement of the first valve core 2 by the moving iron core 32, thereby reducing the difficulty of adjusting the flow rate at the outlet 12, thereby improving the control accuracy, and also improving the reliability of the valve 100. In addition, the fixed iron core 31 has a limiting effect on the moving iron core 32 to limit the moving distance of the moving iron core 32, so as to facilitate the use of the drive component 3.

[0059] According to some embodiments of the present invention, referring to Figure 1 , Figure 5 and Figure 7 A sliding sealing groove 311 is formed on the fixed iron core 31. The first valve core 2 has a first sliding sealing portion 23, and the first sliding sealing portion 23 cooperates with the sliding sealing groove 311 in a sliding and sealing manner.

[0060] For example, in Figure 1 , Figure 5 and Figure 7 In the example, the sliding seal groove 311 is formed on the lower side of the fixed iron core 31, and the first sliding seal part 23 can be the outer peripheral surface of the upper part of the first valve core 2. The first sliding seal part 23 is fitted in the sliding seal groove 311. The first sliding seal part 23 and the inner wall clearance of the sliding seal groove 311 are fitted. Since the clearance is small and smooth, it can be regarded as a sliding seal fluid such as oil. With such a configuration, when the first valve core 2 moves, the first sliding seal part 23 moves in the sliding seal groove 311, which improves the assembly stability of the first valve core 2 and the fixed iron core 31, and also avoids the shaking of the first valve core 2 during the movement, thereby improving the use reliability of the first valve core 2, and further improving the use stability of the valve 100. In addition, the sliding sealing performance between the first valve core 2 and the fixed iron core 31 is improved, thereby effectively preventing the fluid from flowing between the first sliding sealing portion 23 and the side wall of the sliding sealing groove 311, which is beneficial for the fluid to flow to the second pressure-bearing surface 22, and effectively ensuring that a pressure difference can be formed between the first pressure-bearing surface 21 and the second pressure-bearing surface 22, so as to facilitate the normal use of the valve 100.

[0061] According to some embodiments of the present invention, referring to Figure 1 and Figure 6 A guide hole 312 is formed on the fixed iron core 31, and a guide column 24 is provided on the first valve core 2. The guide column 24 passes through the guide hole 312 and stops against the movable iron core 32. Figure 1 and Figure 6 In the example, the guide column 24 extends in the up-down direction, the upper end surface of the guide column 24 is stopped at the bottom surface of the moving iron core 32, and the elastic reset member 4 is sleeved on the outer peripheral surface of the lower part of the guide column 24. In this way, the guide hole 312 has a guiding and limiting function for the guide column 24, thereby improving the reliability of the movement of the guide column 24. In addition, the guide hole 312 limits the shaking of the guide column 24 during the movement, thereby improving the use stability of the first valve core 2. Moreover, the guide column 24 has a limiting function on the elastic reset member 4, avoiding the deflection of the elastic reset member 4 during the movement, thereby improving the use stability of the elastic reset member 4. In addition, the moving iron core 32 pushes the first valve core 2 to move through the guide column 24, further reducing the difficulty of operating the first valve core 2.

[0062] According to some embodiments of the present invention, referring to Figure 1 and Figure 6At least one flow hole 313 is formed on the fixed iron core 31. The driving assembly 3 further includes an iron core cover 33, which is arranged on the moving iron core 32. The iron core cover 33 and the moving iron core 32 jointly define a moving iron core cavity 331. The moving iron core 32 is movably arranged in the moving iron core cavity 331. The fluid entering from the inlet 11 flows to the moving iron core cavity 331 through the flow hole 313 inside the valve body 1.

[0063] For example, in 1 and Figure 6 In the example, two flow holes 313 are provided, and the two flow holes 313 are located on both sides of the guide hole 312 in the radial direction. The flow holes 313 penetrate the bottom wall of the sliding sealing groove 311 and the upper surface of the fixed iron core 31 in the up-down direction, and the flow holes 313 are connected with the second chamber 18. The moving iron core 32 is arranged in the moving iron core 32 cover, and the moving iron core 32 can move in the up-down direction in the moving iron core 32 cover. The fluid flowing to the second chamber 18 can flow into the moving iron core cavity 331 through the flow holes 313. With such a configuration, the moving iron core 32 cover can protect the moving iron core 32, thereby preventing the moving iron core 32 from being damaged, thereby extending the service life of the moving iron core 32. In addition, the flow balance of the fluid in the moving iron core cavity 331 and the second chamber 18 below the fixed iron core 31 can be ensured through the flow hole 313, thereby avoiding the pressure imbalance between the moving iron core cavity 331 and the first valve core 2, which is not conducive to the movement of the moving iron core 32 and the first valve core 2, and then the valve 100 can be used normally (for example, the valve 100 can be normally attracted).

[0064] According to some embodiments of the present invention, referring to Figure 1 and Figure 4 The two ends of the first flow hole 25 penetrate the first pressure-bearing surface 21 and the second pressure-bearing surface 22 respectively, and the fluid flowing in from the inlet 11 is suitable for flowing to the second pressure-bearing surface 22 and the flow hole 313 through the first flow hole 25. Figure 4 In the example, the first flow hole 25 penetrates the first valve body 1 in the up-down direction. The fluid flowing in from the inlet 11 passes through the first pressure-bearing surface 21 and then flows along the first flow hole 25 to the second pressure-bearing surface 22, and then part of the fluid can flow from the flow hole 313 into the moving iron core cavity 331. Three first flow holes 25 are formed on the first valve body 1. With such a configuration, the first flow holes 25 are conducive to the flow of the fluid to the second pressure-bearing surface 22, and are also conducive to the flow of the fluid into the moving iron core cavity 331, so as to facilitate the flow of the fluid on the first valve core 2. In addition, the first flow hole 25 has a simple structure and is easy to produce and process, which is conducive to the production and processing of the first valve core 2.

[0065] According to some embodiments of the present invention, referring to Figure 5A pressure-bearing groove 26 is formed on the side surface of the first valve core 2 adjacent to the inlet 11, and a first chamber 17 is defined between the pressure-bearing groove 26 and the valve body 1. The inner wall surface of the pressure-bearing groove 26 is configured as a first pressure-bearing surface 21, and one end of the first flow hole 25 passes through the bottom wall of the pressure-bearing groove 26.

[0066] For example, in Figure 5 In the example, the pressure-bearing groove 26 is formed at the lower end of the first valve core 2, and the inner wall of the pressure-bearing groove 26 along the up-down direction constitutes the first pressure-bearing surface 21, and the lower end of the first flow hole 25 passes through the bottom wall of the pressure-bearing groove 26. In this way, by setting the pressure-bearing groove 26, the material consumption of the first valve core 2 is reduced, the production cost of the first valve body 1 is reduced, and the weight of the first valve body 1 is reduced, so that it is convenient to form a pressure difference through the pressure on the first pressure-bearing surface 21 and the pressure on the second pressure-bearing surface 22 to push the first valve body 1 to move, thereby facilitating the connection between the inlet 11 and the outlet 12. In addition, the thickness between the bottom wall of the pressure-bearing groove 26 and the upper side of the first valve body 1 is also reduced, thereby reducing the difficulty of forming the first flow hole 25 and increasing the formation rate of the first flow hole 25. In addition, the first valve core 2 has a simple structure and can meet the 100 requirements of the adjustable damping force valve of the electric shock absorber, saving space, and also facilitating the fluid to flow into the pressure-bearing groove 26 to act on the first valve core 2.

[0067] Optionally, refer to Figure 5 The pressure-bearing groove 26 includes a first pressure-bearing groove 261 and a second pressure-bearing groove 262 that are connected to each other. The first pressure-bearing groove 261 is formed on a side of the second pressure-bearing groove 262 that is adjacent to the inlet 11. The cross-sectional area of ​​the first pressure-bearing groove 261 is greater than the cross-sectional area of ​​the second pressure-bearing groove 262. The second pressure-bearing groove 262 is connected to the first flow hole 25. For example, in Figure 5 In the example, the connection between the first pressure-bearing groove 261 and the second pressure-bearing groove 262 is roughly stepped, and the bottom wall of the second pressure-bearing groove 262 is connected to the lower end of the first flow hole 25. In this arrangement, while ensuring the strength of the structure of the first valve core 2, the pressure-bearing area of ​​the first pressure-bearing surface 21 is increased through the first pressure-bearing groove 261, thereby increasing the pressure on the first pressure-bearing surface 21, and increasing the pressure difference between the pressure on the first pressure-bearing surface 21 and the pressure on the second pressure-bearing surface 22, thereby facilitating the upward movement of the first valve core 2 and improving the performance of the valve 100.

[0068] According to some embodiments of the present invention, referring to Figure 1 and Figure 3The valve body 1 has a first valve cavity 13 and a second valve cavity 14, an inlet 11 is formed on the first valve cavity 13, an outlet 12 is formed on the side wall of the second valve cavity 14, a first valve core 2 is movably disposed in the second valve cavity 14, the first valve cavity 13 and the second valve cavity 14 are connected through at least one second flow hole 15, and the first valve core 2 is often separated from the second flow hole 15 to connect the inlet 11 and the outlet 12.

[0069] For example, in Figure 1 In the example, the first valve cavity 13 is formed at the lower part of the valve body 1, the second valve cavity 14 is formed at the upper part of the valve body 1, the inlet 11 is formed on the side wall of the first valve cavity 13, the outlet 12 can be set to multiple, multiple outlets 12 are formed on the side wall of the second valve cavity 14 along the circumference of the valve body 1, and six outlets 12 are set. The first valve core 2 can move in the second valve cavity 14 in the up and down directions, and two second flow holes 15 are formed on the valve body 1. In the description of the utility model, the meaning of "multiple" is two or more. In this way, when the first valve core 2 is in an open state, the fluid flowing from the inlet 11 into the first valve cavity 13 can flow into the second valve cavity 14 through the second flow hole 15, and then flow out from the outlet 12, thereby improving the smoothness of the fluid flow, and then helping to improve the response speed of the valve 100. In addition, the second valve cavity 14 can be used to accommodate the first valve core 2, so as to facilitate the long-term and stable use of the first valve core 2.

[0070] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 The second flow hole 15 is formed on a side surface of the second valve chamber 14 adjacent to the inlet 11. The outer peripheral side of the second flow hole 15 has a sealing surface 151. The first valve core 2 abuts against the sealing surface 151 to cut off the communication between the inlet 11 and the outlet 12. Figure 1 and Figure 2 In the example, the second flow hole 15 is formed on the lower side of the second valve cavity 14, the sealing surface 151 is formed on the outer peripheral side of the upper end of the second flow hole 15, and the lower end surface of the first valve core 2 abuts against the sealing surface 151. This arrangement improves the sealing effect between the first valve core 2 and the valve body 1, thereby improving the closing effect of the outlet 12, thereby effectively ensuring the isolation of the inlet 11 and the outlet 12. In addition, the sealing surface 151 is used to seal with the lower end surface of the first valve core 2 to adjust the flow rate.

[0071] According to some embodiments of the present invention, referring to Figure 1 A one-way conducting structure 16 is provided at the inlet 11, and the one-way conducting structure 16 is configured to make the fluid flowing through the inlet 11 flow to the second flow hole 15 in one direction. Figure 1In the example of , the upper end of the one-way conducting structure 16 is inserted into the lower end of the valve body 1, and the one-way conducting structure 16 is threadedly connected to the valve body 1. In this way, the one-way conducting structure 16 effectively ensures that the fluid can flow from the inlet 11 along the second flow hole 15 into the second valve chamber 14, thereby ensuring that the valve 100 can be used normally, thereby improving the performance of the valve 100. In addition, it is convenient to assemble and disassemble the one-way conducting structure 16 and the valve body 1, thereby improving the assembly efficiency and disassembly efficiency of the one-way conducting structure 16 and the valve body 1.

[0072] According to some embodiments of the present invention, referring to Figure 1 The one-way conducting structure 16 includes a one-way valve plate 161, which is movably disposed in the first valve chamber 13 and usually covers the inlet 11. Figure 1 In the example of , the one-way valve plate 161 can movably cover and open the inlet 11. Thus, the fluid opens the one-way valve plate 161 in the upward direction to allow the fluid to flow in from the inlet 11. After the fluid flows in, the one-way valve plate 161 automatically covers the inlet 11 to prevent the fluid from flowing out in the downward direction, thereby effectively ensuring that the fluid can flow in one direction, thereby facilitating the normal use of the valve 100 and improving the performance of the valve 100.

[0073] According to some embodiments of the present invention, referring to Figure 1 and Figure 5 , the flow area of ​​the outlet 12 is greater than the maximum flow area between the side of the first valve core 2 adjacent to the inlet 11 and the valve body 1 when the inlet 11 and the outlet 12 are connected. When there are multiple outlets 12, the flow area of ​​the outlet 12 is the sum of the cross-sectional areas of the multiple outlets 12, and the maximum flow area is the product of the inner wall circumference of the first pressure-bearing groove 261 and the distance between the lower end face of the first valve body 1 and the sealing surface 151. In this way, throttling is avoided during the flow of the fluid, which helps the normal use of the valve 100. In addition, the outlet 12 has a simple structure, so it is easy to control the flow area of ​​the outlet 12, which is convenient for the production of the valve 100.

[0074] Optionally, refer to Figure 1, the valve 100 further includes a coil assembly 5, a coil housing 6, a magnetic isolation ring 7 and a magnetic conductive plate 8, the magnetic isolation ring 7 is pressed on the bottom of the core cover 33, the coil assembly 5 is sleeved outside the core cover 33, the magnetic conductive plate 8 is located at the top of the coil assembly 5, the coil housing 6 is sleeved outside the magnetic conductive plate 8, the coil assembly 5 and the upper end of the valve body 1, and the lower end of the coil housing 6 is threadedly connected with the upper end of the valve body 1. As a result, it is convenient to assemble and disassemble the coil housing 6 and the valve body 1, thereby improving the assembly efficiency and disassembly efficiency of the valve 100. In addition, after the valve 100 is energized, the moving iron core 3 moves downward against the guide column 24 of the first valve body 2, and the magnitude of the electromagnetic force can be controlled by the magnitude of the current applied to the coil assembly 5 to adjust the opening and closing force of the first valve body 2, thereby controlling the magnitude of the flow at the outlet 12. In addition, the flow can be adjusted by the area difference between the first pressure-bearing surface 21 and the second pressure-bearing surface 22 and the magnitude of the electromagnetic force generated by the different currents, thereby achieving the effect of adjustable damping force of the shock absorber.

[0075] According to the valve 100 of the present utility model, the working principle of the valve 100 is roughly as follows:

[0076] When the valve 100 is not energized, the flow rate of the fluid passing through the valve 100 is relatively large, and the damping force generated by the shock absorber is very small (e.g. Figure 1 After passing through the one-way conducting structure 16, the fluid enters the first valve cavity 13, and then flows into the bottom of the first valve core 2 through the second flow hole 15. A small amount of fluid flows from the first flow hole 25 of the first valve core 2 to the second pressure-bearing surface 22, and then flows into the moving iron core cavity 331 through the flow hole 313 of the fixed iron core 31. The remaining large amount of fluid flows into the second valve cavity 14 through the first valve core 2 and the sealing surface 151, and then the fluid flows out from the outlet 12 (the flow path of the fluid is shown in FIG. Figure 1 At this time, the normally open state of the valve 100 is also the state where the damping force of the shock absorber is the smallest.

[0077] When the valve 100 is powered on, the opening and closing degree between the lower end face of the first valve core 2 and the sealing surface 151 (that is, the connection opening degree of the first valve core 2) can be controlled by the current size of the coil assembly 5, thereby controlling the flow size to adjust the damping force of the shock absorber. When the full current is applied to the coil assembly 5, the contact force between the lower end face of the first valve core 2 and the sealing surface 151 is the largest, and the flow rate of the fluid through the valve 100 is very small. At this time, the damping force generated by the shock absorber is the largest. The fluid enters the first valve cavity 13 after passing through the unidirectional conductive structure 16, and then flows into the bottom of the first valve core 2 through the second flow hole 15. A small amount of fluid flows from the first flow hole 25 of the first valve core 2 to the second pressure-bearing surface 22, and then flows into the moving iron core cavity 331 through the flow hole 313 of the fixed iron core 31. When the pressure of the fluid is relatively large, that is, when the pressure on the first pressure-bearing surface 21 is greater than the pressure on the second pressure-bearing surface 22, the fluid acts on the first valve core 2 to resist the driving force generated by the driving component 3 after being energized (such as Figure 8 As shown by the arrow C in the middle, the first valve core 2 is pushed to gradually move upward to gradually open the first valve core 2. At this time, the fluid can flow into the second valve cavity 14 through the opening between the first valve core 2 and the sealing surface 151, and finally the fluid flows out from the outlet 12 (the flow path of the fluid is shown in FIG. Figure 8 Indicated by the arrow A in the middle), at this time, the damping force of the shock absorber is at its maximum.

[0078] The shock absorber (not shown) according to the embodiment of the second aspect of the utility model comprises the valve 100 according to the embodiment of the first aspect of the utility model.

[0079] According to the shock absorber of the utility model, by adopting the above-mentioned valve, the effect of adjusting the damping force of the shock absorber is improved, thereby improving the use performance of the shock absorber.

[0080] The chassis (not shown) according to the embodiment of the third aspect of the utility model comprises the shock absorber according to the embodiment of the second aspect of the utility model.

[0081] According to the chassis of the utility model, the use performance of the chassis is improved by adopting the above-mentioned shock absorber.

[0082] The vehicle according to the fourth aspect of the present invention (not shown) comprises the valve 100 according to the first aspect of the present invention, or the shock absorber according to the second aspect of the present invention, or the chassis according to the third aspect of the present invention.

[0083] According to the vehicle of the present invention, by adopting the valve 100, or the shock absorber, or the chassis, the driving comfort of the vehicle is improved, thereby improving the use performance of the vehicle.

[0084] The valve 100 , the shock absorber, the chassis and other components and operations of the vehicle according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail herein.

[0085] In the description of the present invention, it is necessary to understand that the terms "length", "up", "down", "top", "bottom", "inside", "outside", "circumferential", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0086] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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 utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0087] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A valve, characterized in that: include: a valve body, wherein an inlet and an outlet are formed on the valve body; A drive assembly, wherein the drive assembly is arranged on the valve body; a first valve core, the first valve core is arranged in the valve body, the first valve core can move between a first position and a second position, the first valve core cooperates with the driving assembly, the driving assembly is used to drive the first valve core to move from the second position to the first position, the first valve core divides the interior of the valve body into a first chamber and a second chamber, a first flow hole is formed on the first valve core, the first chamber and the second chamber are connected through the first flow hole, the first chamber is connected with the inlet, when the first valve core is located at the first position, the first valve core blocks the connection between the first chamber and the outlet, the first valve core has a first pressure-bearing surface and a second pressure-bearing surface, a side surface of the first valve core facing the first chamber is configured as the first pressure-bearing surface, a side surface of the first valve core facing the second chamber is configured as the second pressure-bearing surface, and the pressure-bearing area of ​​the first pressure-bearing surface is greater than the pressure-bearing area of ​​the second pressure-bearing surface; An elastic reset member is disposed between the first valve core and the inner wall of the valve body, and the elastic reset member always pushes the first valve core toward the second position.

2. The valve according to claim 1, characterized in that The first valve core is configured such that when the pressure difference between the pressure on the first pressure-bearing surface and the pressure on the second pressure-bearing surface changes, the communication opening between the inlet and the outlet through the first valve core changes to adjust the flow rate of the outlet.

3. The valve according to claim 1, characterized in that The drive assembly comprises: A fixed iron core, the fixed iron core is arranged on the valve body; A moving iron core, wherein the moving iron core is movably arranged on a side of the fixed iron core away from the first valve core along the moving direction of the first valve core, the moving iron core cooperates with the first valve core, and when the moving iron core moves toward the inlet, the moving iron core pushes the first valve core to move toward the first position to adjust the flow rate of the outlet.

4. The valve according to claim 3, characterized in that A sliding sealing groove is formed on the fixed iron core; The first valve core has a first sliding sealing portion, and the first sliding sealing portion is slidably sealed with the sliding sealing groove.

5. The valve according to claim 3, characterized in that A guide hole is formed on the fixed iron core, and a guide column is provided on the first valve core. The guide column passes through the guide hole and abuts against the moving iron core.

6. The valve according to claim 3, characterized in that At least one flow hole is formed on the fixed iron core; The drive assembly further comprises: The core cover is arranged on the moving iron core, and the core cover and the moving iron core jointly define a moving iron core cavity. The moving iron core is movably arranged in the moving iron core cavity, and the fluid entering from the inlet flows to the moving iron core cavity through the flow hole inside the valve body.

7. The valve according to claim 1, characterized in that A pressure-bearing groove is formed on a side surface of the first valve core adjacent to the inlet, the first chamber is defined between the pressure-bearing groove and the valve body, the inner wall surface of the pressure-bearing groove is configured as the first pressure-bearing surface, and one end of the first flow hole passes through the bottom wall of the pressure-bearing groove.

8. The valve according to claim 1, characterized in that The valve body comprises a first valve cavity and a second valve cavity, the inlet is formed on the first valve cavity, the outlet is formed on the side wall of the second valve cavity, the first valve core is movably disposed in the second valve cavity, the first valve cavity and the second valve cavity are connected through at least one second flow hole, and the first valve core is often separated from the second flow hole to connect the inlet and the outlet.

9. The valve according to claim 8, characterized in that The second flow hole is formed on a side surface of the second valve cavity adjacent to the inlet, and the outer peripheral side of the second flow hole has a sealing surface; The first valve core abuts against the sealing surface to cut off the communication between the inlet and the outlet.

10. The valve according to claim 9, characterized in that A one-way conducting structure is provided at the inlet, and the one-way conducting structure is configured to make the fluid flowing through the inlet flow to the second flow hole in one direction.

11. The valve according to claim 10, characterized in that The one-way conductive structure comprises: A one-way valve plate is movably disposed in the first valve cavity, and the one-way valve plate usually covers the inlet.

12. The valve according to any one of claims 1 to 11, characterized in that The flow area of ​​the outlet is larger than the maximum flow area between the valve body and a side of the first valve core adjacent to the inlet when the inlet and the outlet are connected.

13. A shock absorber, characterized in that: Comprising a valve according to any one of claims 1-12.

14. A chassis, characterized in that: Comprising a vibration damper according to claim 13.

15. A vehicle, characterized in that: Comprising a valve according to any one of claims 1 to 12, or a shock absorber according to claim 13, or a chassis according to claim 14.

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