A solenoid valve with adjustable damping

Abstract

The present invention discloses a solenoid valve with adjustable damping, comprising a valve housing and a valve core assembly disposed within the valve housing. The valve core assembly has multiple oil passages, with damping valve systems and valve ports disposed on both sides of the oil passages. The valve ports extend through the valve housing and are located adjacent to the damping valve systems. A blocking device is also disposed within the valve core assembly, capable of passing through the oil passages. The blocking device is provided with oil holes corresponding to the size of the oil passages. The blocking device is movable in a direction passing through the oil passages to adjust the amount of oil flowing through the oil passages. The present invention utilizes fewer components for damping control, which not only saves costs but also improves response speed and reliability.

Description

Technical Field

[0001] The invention belongs to the technical field of solenoid valves, and in particular relates to a solenoid valve with adjustable damping. Background Art

[0002] Solenoid valves are electromagnetically controlled industrial equipment and are basic automation components used to control fluids. They are actuators, not limited to hydraulics or pneumatics. They are used in industrial control systems to adjust the direction, flow, speed, and other parameters of media. In the automotive field, solenoid valves for electronically controlled shock absorbers are increasingly widely used. However, the damping adjustment range of most solenoid valves is relatively narrow, resulting in poor vibration reduction effects. At the same time, due to the complex structure of the damping control components, not only are the costs high, but the response speed is slow and the accuracy is low. Summary of the Invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a solenoid valve with adjustable damping, which can change the cross-sectional area of the oil passage, thereby realizing rapid adjustment of the damping force.

[0004] The object of the present invention is achieved through the following technical solutions:

[0005] A solenoid valve with adjustable damping includes a valve housing and a valve core assembly arranged in the valve housing, the valve core assembly having multiple oil passages, and damping valve systems and valve ports are also arranged on both sides of the oil passages. The valve ports pass through the valve housing and are located next to the damping valve systems. A blocking device is also provided in the valve core assembly, the blocking device can pass through the oil passage, and an oil hole corresponding to the size of the oil passage is opened on the blocking device. The blocking device can move in a direction passing through the oil passage to adjust the amount of oil passing through the oil passage.

[0006] In one embodiment, the blocking device is installed in the sliding hole in the valve core assembly, and two sides of the blocking device are respectively in contact with the inner wall of the valve core assembly, and the oil hole is connected to the oil passage.

[0007] In one embodiment, the damping valve is connected via a fixing rod, and the fixing rod passes through the sliding hole of the valve core assembly along an extending direction of the oil passage.

[0008] In one embodiment, a sliding hole is provided on the blocking device, the blocking device is sleeved on the fixing rod, and the diameter of the sliding hole is larger than the diameter of the fixing rod to allow the blocking device to move.

[0009] In one embodiment, a drive chamber is provided in the valve housing, the drive chamber extends along the moving direction of the blocking device, a drive assembly fixedly connected to the blocking device is installed in the drive chamber, and the drive assembly can move along the extension direction of the drive chamber.

[0010] In one embodiment, when power is off, the oil hole of the blocking device is completely aligned with the oil passage.

[0011] In one embodiment, when the power is off, the oil passage hole and the oil passage of the blocking device are staggered with each other in the moving direction of the blocking device.

[0012] In one embodiment, the sliding hole is located at the center of the valve core assembly, and the plurality of oil passages are evenly spaced and distributed on the valve core assembly along the circumference of the sliding hole.

[0013] In one embodiment, a self-resetting device is further provided in the driving cavity, and the driving assembly is connected to the self-resetting device.

[0014] In one embodiment, the valve further comprises a coil assembly disposed in the valve housing, wherein the coil assembly is wound along the drive cavity.

[0015] The beneficial effects of the present invention are:

[0016] Compared with the existing technology, damping control can be performed with fewer parts, which not only saves costs but also improves the response speed. It has a larger adjustable range and a wider range of applications. Its simple structure has higher reliability than the existing technology, and it is set as a proportional solenoid valve, which makes energy consumption lower. By changing the position of the oil hole, different solenoid valves can be met. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings, wherein:

[0018] Figure 1 A schematic structural diagram of an embodiment of the present invention is shown;

[0019] Figure 2 A schematic structural diagram of the oil passage of the present invention is shown;

[0020] Figure 3 A schematic structural diagram of the valve core assembly of the present invention is shown;

[0021] Figure 4 A schematic diagram showing the structure of the valve core assembly of the present invention in another direction

[0022] Figure 5 A schematic structural diagram of the barrier device of the present invention is shown;

[0023] Figure 6 A schematic diagram showing the adjustable damping range of the present invention is shown;

[0024] In the drawings, like reference numerals are used for like parts, but the drawings are not necessarily true to scale.

[0025] Reference numerals:

[0026] 1-valve housing, 2-damping valve system, 3-fixing rod, 4-valve core assembly, 5-blocking device, 6-reset assembly, 7-driving part, 8-coil assembly, 9-driving chamber, 10-driving rod, 11-first valve port, 12-first oil passage, 13-first oil hole, 14-second valve port, 15-second oil passage, 16-second oil hole, 17-sliding hole, 18-sliding hole. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] The present invention provides a solenoid valve with adjustable damping, such as Figure 1 As shown, it includes a valve housing 1 and a valve core assembly 4 disposed in the valve housing 1. The valve core assembly 4 has multiple oil passages. Damping valve systems 2 and valve ports are also disposed on both sides of the oil passages. The valve ports pass through the valve housing 1 and are located next to the damping valve system 2. A blocking device 5 is also disposed in the valve core assembly 4. The blocking device 5 can pass through the oil passages and has oil holes corresponding to the size of the oil passages. The blocking device 5 can move in a direction passing through the oil passages to adjust the amount of oil passing through the oil passages.

[0029] It should be noted that when the oil passes through the damping valve system 2, it absorbs the high-pressure oil impact from the shock absorber assembly. When the blocking device 5 moves in the sliding hole 17, the oil flow cross-sectional area between the oil flow hole on the blocking device 5 and the oil flow channel of the valve core assembly 4 can be changed, thereby achieving the function of adjusting the damping force. Figure 1 and Figure 2 As shown, the blocking device 5 is disposed within the valve core assembly 4 and is in contact with the inner wall of the valve core assembly 4. That is, the oil passage hole formed in the blocking device 5 can communicate with the oil passageway of the valve core assembly 4. When oil enters from the first valve port 11, it passes through the first oil passageway 12 of the valve core assembly 4, the first oil passage hole 13 of the blocking device 5, and the damping valve system 2 on the opposite side, and flows out from the second valve port 14. When oil enters from the second valve port 14, it passes through the second oil passageway 15 of the valve core assembly 4, the second oil passage hole 16 of the blocking device 5, and the damping valve system 2 on the opposite side, and flows out from the first valve port 11, thereby controlling the compression or recovery of the solenoid valve.

[0030] Specifically, if Figure 2As shown, the blocking device 5 is installed in the sliding hole 17 in the valve core assembly 4, and both sides of the blocking device 5 are respectively in contact with the inner wall of the valve core assembly 4, the oil hole is connected to the oil passage, the damping valve system 2 is connected via a fixed rod 3, and the fixed rod 3 passes through the sliding hole 17 of the valve core assembly 4 along the extension direction of the oil passage, and a sliding hole 18 is formed on the blocking device 5. The blocking device 5 is sleeved on the fixed rod 3, and the aperture of the sliding hole 18 is larger than the diameter of the fixed rod 3 to allow the blocking device 5 to move;

[0031] It should be noted that the fixing rod 3 is passed through the sliding hole 17 of the valve core assembly 4, and the blocking device 5 is sleeved on the fixing rod 3 through the sliding hole 18, that is, Figure 3 、 Figure 4 as well as Figure 5 As shown, the aperture of the sliding hole 18 is larger than the diameter of the fixed rod 3, so that the blocking device 5 can move in a small range. During its movement, the oil-passing cross-sectional area between the oil-passing hole and the oil-passing channel changes, thereby achieving the function of adjusting the damping force. The structure is simple and fewer components are used to control the damping valve system 2, which not only improves its stability, but also meets its high precision and high pressure requirements. At the same time, this method also makes its response speed faster.

[0032] In one embodiment, Figure 1 As shown, a drive chamber 9 is provided in the valve housing 1. The drive chamber 9 extends along the moving direction of the blocking device 5. A drive assembly fixedly connected to the blocking device 5 is installed in the drive chamber 9. The drive assembly can move along the extending direction of the drive chamber 9.

[0033] Specifically, the driving assembly includes a driving part 7 and a driving rod 10 arranged in the driving cavity 9. The driving rod 10 is installed in the center of the driving part 7, and a reset assembly 6 for resetting the driving rod 10 is also provided on the inner wall of the driving cavity 9. The driving part 7 drives the driving rod 10, and then drives the blocking device 5 to adjust the oil-passing cross-sectional area.

[0034] In one embodiment, a single-side damping valve system 2 may be provided on one side of the oil passage, or damping valve systems 2 in the same direction may be provided on both sides of the oil passage, thereby realizing a single-side oil circuit damping control solenoid valve.

[0035] In one embodiment, when the power is off, the oil hole of the blocking device 5 is completely aligned with the oil passage, that is, the current position is the largest oil cross-sectional area and the damping force is at the minimum state. After the power is turned on, the position of the blocking device 5 changes, so that the oil cross-sectional area is reduced and the damping force is increased. That is, the greater the current, the greater the damping force, thus forming a proportional solenoid valve to reduce energy consumption.

[0036] In one embodiment, when the power is off, the oil hole and the oil passage of the blocking device 5 are staggered with each other in the moving direction of the blocking device 5, that is, the current position is the smallest oil-passing cross-sectional area and the damping force is at the maximum state. After power is turned on, the blocking device 5 is driven to increase the oil-passing cross-sectional area and reduce the damping force, that is, the greater the current, the smaller the damping force.

[0037] It should be noted that by adjusting the position of the oil hole, the solenoid valve can be adjusted to meet different requirements, such as direct proportional or inverse proportional adjustment, and adjustment of the initial damping force requirement. In the above embodiment, the initial damping force is at the minimum or maximum state. According to needs, the initial damping force can be set between the minimum state and the maximum state to meet the needs of different solenoid valves and facilitate promotion and use.

[0038] In one embodiment, Figure 4 As shown, the sliding hole 17 is located at the center of the valve core assembly 4, and multiple oil passages are evenly spaced along the circumference of the sliding hole 17 on the valve core assembly 4. The first oil passage 12 and the second oil passage 15 are alternately arranged, so that when the blocking device 5 is lifted, the change amount of each oil passage is the same.

[0039] In one embodiment, Figure 1 As shown, the valve housing 1 further includes a coil assembly 8 disposed in the valve housing 1 , and the coil assembly 8 is wound along the drive cavity 9 .

[0040] In one embodiment, Figure 6 As shown, a PQ characteristic diagram of the solenoid valve compression process of the present application is shown, and it is compared with the solenoid valve of traditional structure. It is obvious that the solenoid valve in the present application has a larger adjustable range, which is convenient for use in high-pressure environments.

[0041] In the description of the present invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention.

[0042] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely illustrative of the principles and applications of the invention. It should be understood that many modifications may be made to the illustrative embodiments, and that other arrangements may be devised, without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in ways other than those described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be employed in conjunction with other described embodiments.

Claims

1. A solenoid valve with adjustable damping, characterized in that: It includes a valve housing and a valve core assembly arranged in the valve housing, the valve core assembly has multiple oil passages, and a damping valve system and a valve port are also arranged on both sides of the oil passage. The valve port passes through the valve housing and is located next to the damping valve system. A blocking device is also provided in the valve core assembly, and the blocking device can pass through the oil passage, and an oil hole corresponding to the size of the oil passage is opened on the blocking device. The blocking device can move along the direction of passing through the oil passage to adjust the amount of oil passing through the oil passage.

2. The solenoid valve with adjustable damping according to claim 1, characterized in that: The blocking device is installed in the sliding hole in the valve core assembly, and two sides of the blocking device are respectively in contact with the inner wall of the valve core assembly, and the oil hole is communicated with the oil passage.

3. The solenoid valve with adjustable damping according to claim 2, characterized in that: The damping valve is connected via a fixing rod, and the fixing rod passes through the sliding hole of the valve core assembly along the extending direction of the oil passage.

4. The solenoid valve with adjustable damping according to claim 3, characterized in that: The blocking device is provided with a sliding hole, and the blocking device is sleeved on the fixing rod. The diameter of the sliding hole is larger than the diameter of the fixing rod, so that the blocking device can move.

5. The solenoid valve with adjustable damping according to claim 1 or 4, characterized in that: A drive chamber is provided in the valve housing, and the drive chamber extends along the moving direction of the blocking device. A drive assembly fixedly connected to the blocking device is installed in the drive chamber, and the drive assembly can move along the extending direction of the drive chamber.

6. The solenoid valve with adjustable damping according to claim 1, characterized in that: When the power is off, the oil hole of the blocking device is completely aligned with the oil passage.

7. The solenoid valve with adjustable damping according to claim 1, characterized in that: When the power is off, the oil passage hole of the blocking device and the oil passage are staggered with each other in the moving direction of the blocking device.

8. The solenoid valve with adjustable damping according to claim 2, characterized in that: The sliding hole is located at the center of the valve core assembly, and a plurality of oil passages are evenly spaced and distributed on the valve core assembly along the circumference of the sliding hole.

9. The solenoid valve with adjustable damping according to claim 5, characterized in that: A self-resetting device is also provided in the driving cavity, and the driving assembly is connected to the self-resetting device.

10. The solenoid valve with adjustable damping according to claim 5, characterized in that: The valve also includes a coil assembly disposed in the valve housing, wherein the coil assembly is wound along the drive cavity.

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