Switch electromagnetic valve and damping adjusting device
By introducing spring-assisted driving force and valve plate group design into the solenoid valve, the problems of high energy consumption and slow response speed of the existing solenoid valve are solved, and the effects of low energy consumption, fast response, long life and low cost are achieved.
Patent Information
- Application Number
- CN202511215705.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-28
- Publication Date
- 2025-10-10
AI Technical Summary
Existing solenoid valves rely entirely on magnetic force to drive the cone rod, which has high energy consumption, slow response speed and high performance requirements.
It adopts a switch solenoid valve structure and uses a spring to provide auxiliary driving force to reduce dependence on magnetic force. Combined with the valve plate group and control valve core design, it can achieve flexible adjustment of the liquid flow channel.
It reduces energy consumption, improves response speed, extends service life, has a more compact structure, lowers use cost, and makes damping force adjustment more comfortable.
Smart Images
Figure CN120759885A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of solenoid valves, and in particular to a switch solenoid valve and a damping adjustment device. Background Art
[0002] The damping adjustment device primarily consists of a piston rod, an outer cylinder, an intermediate cylinder, and a solenoid valve. The piston rod passes through the intermediate cylinder, which in turn passes through the outer cylinder. The solenoid valve's outer shell is fixedly attached to the outer cylinder, and the end of the solenoid valve's inner core fits snugly into the intermediate cylinder. When the electronically controlled shock absorber is operating, the piston rod reciprocates axially, driving the oil in the intermediate cylinder through the solenoid valve to the low-pressure area within the outer cylinder.
[0003] The existing solenoid valve mainly includes an electromagnetic component and an oil circuit component arranged in the electromagnetic valve seat of the electromagnetic component. The oil circuit component includes a relief valve placed at the bottom of the valve body. The relief valve includes a main valve core slidingly connected to the valve body. The main valve core includes a large head section sleeved in the valve body and a small head section penetrating into an opening set at the bottom of the valve body. A damping hole is set at the bottom of the large head section, and an oil drain hole is set on the small head section; the electromagnetic component includes a conical rod driven by magnetic force, and the end of the conical rod contacts the small head section of the main valve core to achieve sealing of the oil drain hole.
[0004] The defects of the existing solenoid valve include: the movement of the cone rod is entirely driven by the magnetic force of the electromagnetic component, which consumes a lot of energy, has high performance requirements for the electromagnetic component, and the cone rod has a slow response speed. Summary of the Invention
[0005] The purpose of the present invention is to provide a switch electromagnetic valve and a damping adjustment device, which solves the problem that the existing electromagnetic valve relies entirely on magnetic force to drive the cone rod and has low energy consumption.
[0006] To achieve this object, the present invention adopts the following technical solutions:
[0007] The switch solenoid valve comprises: a valve body; a valve plate group, which is attached to the end surface of the valve body, an overflow space S1 is formed between the valve body and the valve plate group, and when the liquid flow pressure in the overflow space S1 is greater than the set value, a liquid flow channel can be formed between the valve body and the valve plate group; a control valve body, comprising a control valve main body and a mounting column, the valve body and the valve plate group are sequentially sleeved on the mounting column, and the valve body, the valve plate group and the control valve main body are sequentially attached; the control valve main body is provided with a valve body groove along the axial direction, and a radial groove is provided on the side wall of the valve body groove a flow hole, the valve body groove being in communication with the radial flow hole; a control valve core, one end of which is passed through the valve body groove, and the control valve core can at least partially block the radial flow hole when moving axially; a spring, one end of which abuts against the control valve core, and the spring and the control valve body are respectively located on opposite sides of the control valve core; a valve sleeve, the valve body, the valve plate group and the control valve body are at least partially passed through the valve sleeve; an electromagnetic base, which is sleeved on part of the outer periphery of the control valve core; and a valve seat, which is sleeved on the outside of the valve sleeve and the electromagnetic base.
[0008] In one preferred embodiment, the control valve body includes a first control valve body and a second control valve body, and the mounting post is connected to one of the first control valve body and the second control valve body.
[0009] In one preferred embodiment, grooves are respectively provided on the first control valve body and the second control valve body. After assembly, the grooves on the first control valve body are aligned with the grooves on the second control valve body and together form the radial flow hole.
[0010] In one preferred embodiment, the radial flow hole is swallow-shaped, and when the control valve core moves to different positions, the flow area of the radial flow hole corresponds to a uniform damping force value.
[0011] In one of the preferred embodiments, three radial flow holes are opened on the side wall of the valve body groove, and the three radial flow holes are symmetrically arranged about the center of the valve body groove.
[0012] In one of the preferred embodiments, the switch solenoid valve also includes an adjusting screw abutting against the other end of the spring; a column through-hole is axially opened inside the mounting column, the column through-hole is connected to the valve body groove, and a flow blocking part is provided in the column through-hole; a valve core through-hole is axially opened in the control valve core, the column through-hole is connected to the valve core through-hole, and the adjusting screw is located on the extension line of the valve core through-hole.
[0013] In one of the preferred embodiments, the valve body includes a valve main body, the edge of the valve main body protrudes axially to form a valve body flange, and the valve plate group is attached to the valve body flange; a valve mounting through hole for the mounting column to pass through is provided in the middle of the valve main body, and a valve flow through hole for liquid to pass through is also provided on the valve main body.
[0014] In one preferred embodiment, the valve plate group includes at least two elastic valve plates, and all of the elastic valve plates are sequentially arranged in close contact along the axial direction.
[0015] In one of the preferred embodiments, the control valve core includes a valve core body and a valve core column connected to each other, a spring limiting groove is opened at the free end of the valve core body, the valve core through-hole is connected to the spring limiting groove, and a step surface for abutting the end of the spring is formed between the valve core through-hole and the spring limiting groove; the control valve core also includes a limiting ring, which is fixedly connected to the outer peripheral surface of the valve core column through a radial connecting rib, and the limiting ring is inserted into the valve body groove.
[0016] On the other hand, the present invention adopts the following technical solutions:
[0017] The damping adjustment device includes an outer cylinder, an intermediate cylinder passing through the outer cylinder, and a piston rod passing through the intermediate cylinder. The damping adjustment device also includes the above-mentioned switching solenoid valve. Through holes are respectively opened on the sides of the outer cylinder and the intermediate cylinder. The valve seat is fixedly connected to the through hole on the side of the outer cylinder. The valve body is fixedly connected to the through hole on the side of the intermediate cylinder. When the piston rod moves axially, the liquid flow in the intermediate cylinder can enter the low-pressure area of the outer cylinder through the switching solenoid valve.
[0018] The switch solenoid valve disclosed in the present invention includes a spring, which can provide auxiliary driving force for the control valve core, does not need to rely entirely on magnetic drive, has low energy consumption, low performance requirements for the magnetic drive device, and a fast response speed of the control valve core. The switch solenoid valve has a long service life.
[0019] The damping adjustment device disclosed in the present invention includes the above-mentioned switch solenoid valve, which has a more streamlined and compact structure, is more comfortable to use, and has low cost; sufficient space is left to increase the outer diameter of the valve plate group, and the valve plate group with a large outer diameter can improve the comfort of damping force adjustment. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is a structural schematic diagram of a damping adjustment device provided in a specific embodiment of the present invention;
[0021] Figure 2 is a cross-sectional view of a switch solenoid valve provided in a specific embodiment of the present invention;
[0022] Figure 31 is a schematic structural diagram of a valve body provided in a specific embodiment of the present invention;
[0023] Figure 4 This is one of the structural diagrams of the control valve body provided by the specific embodiment of the present invention;
[0024] Figure 5 This is the second structural diagram of the control valve body provided by the specific embodiment of the present invention;
[0025] Figure 6 1 is a structural diagram of a first main body of a control valve provided in a specific embodiment of the present invention;
[0026] Figure 7 1 is a structural diagram of a second body of a control valve provided in a specific embodiment of the present invention;
[0027] Figure 8 This is one of the structural diagrams of the control valve core provided by the specific embodiment of the present invention;
[0028] Figure 9 This is the second structural diagram of the control valve core provided by the specific embodiment of the present invention;
[0029] Figure 10 It is a schematic diagram of the liquid flow route in the switch solenoid valve provided in a specific embodiment of the present invention.
[0030] In the picture:
[0031] 1. Valve body; 2. Valve plate assembly; 3. Control valve body; 4. Control valve core; 5. Spring; 6. Valve sleeve; 7. Electromagnetic base; 8. Valve seat; 9. Flow blocking piece; 11. Valve main body; 12. Valve flow through hole; 13. Valve mounting through hole; 14. Valve body flange; 31. Mounting column; 32. Valve body groove; 33. Radial flow hole; 34. Control valve first body; 35. Control valve second body; 36. Column through hole; 41. Valve core through hole; 42. Valve core body; 43. Valve core column; 44. Limiting ring; 45. Connecting rib; 51. Adjusting screw; 100. Switch solenoid valve; 200. Outer cylinder; 300. Intermediate cylinder; 341. First body groove; 351. Second body groove; 400. Piston rod; 421. Spring limiting groove. DETAILED DESCRIPTION
[0032] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations 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 orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.
[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.
[0035] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.
[0036] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.
[0037] It is to be understood that when an element such as a layer, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. It will be understood that, although the terms "first", "second", etc. can be used herein to describe various elements, these elements should not be limited by these terms since such elements are commonly known by other terms.
[0038] The present embodiment discloses a switch electromagnetic valve and a damping adjustment device comprising the same, as shown in Figure 1 The damping adjustment device comprises a switch electromagnetic valve 100, an outer cylinder 200, an intermediate cylinder 300 and a piston rod 400, the piston rod 400 is arranged in the intermediate cylinder 300, and the intermediate cylinder 300 is arranged in the outer cylinder 200. The side surface of the outer cylinder 200 and the intermediate cylinder 300 is provided with a through hole, and the switch electromagnetic valve 100 is connected to the through hole. When the piston rod 400 moves in the axial direction, the liquid flow in the intermediate cylinder 300 can enter the low pressure area of the outer cylinder 200 through the switch electromagnetic valve 100.
[0039] As shown in Figure 1 and Figure 2 The switch electromagnetic valve comprises a valve body 1, a valve plate group 2, a control valve body 3, a control valve core 4, a spring 5, a valve sleeve 6, an electromagnetic base 7 and a valve seat 8. The valve body 1 is fixedly connected to the through hole in the side surface of the intermediate cylinder 300 and receives the liquid flow entering the switch electromagnetic valve through the intermediate cylinder 300. The valve plate group 2 is attached to the end surface of the valve body 1, and the valve body 1 and the valve plate group 2 form an overflow space S1. When the pressure of the liquid flow in the overflow space S1 is greater than a set value, a liquid flow passage can be formed between the valve body 1 and the valve plate group 2. The valve body 1, the valve plate group 2 and the control valve body 3 are at least partially arranged in the valve sleeve 6. The electromagnetic base 7 is sleeved on part of the outer circumference of the control valve core 4, and part of the outer circumference of the control valve core 4 abuts against the inner wall surface of the electromagnetic base 7. The valve seat 8 is sleeved on the outside of the valve sleeve 6 and the electromagnetic base 7, and the valve seat 8 is fixedly connected to the through hole in the side surface of the outer cylinder 200.
[0040] The control valve body 3 includes a control valve main body and a mounting post 31. The valve body 1 and the valve disc assembly 2 are sequentially mounted on the mounting post 31 and fit tightly together. The valve body 1, the valve disc assembly 2 and the control valve main body are sequentially fitted together, making the overall structure more compact. The mounting post 31 can be a single entity, or it can form a combined structure with the valve body 1, or it can form a combined structure with the control valve main body. The control valve main body is provided with a valve body groove 32 along the axial direction, and one end of the control valve core 4 is inserted into the valve body groove 32. A radial flow hole 33 is provided on the side wall of the valve body groove 32. The valve body groove 32 is connected to the space outside the control valve body 3 through the radial flow hole 33. When the control valve core 4 moves axially, it can at least partially block the radial flow hole 33, thereby changing the effective flow cross-sectional area between the valve body groove 32 and the external space.
[0041] One end of the spring 5 abuts the other end of the control valve core 4, and the other end of the spring 5 abuts the adjustment screw 51. That is, the spring 5 and the control valve body 3 are located on opposite sides of the control valve core 4. The spring 5 can provide auxiliary driving force for the control valve core 4, eliminating the need for full magnetic drive. This reduces energy consumption, places low performance requirements on the magnetic drive device, and provides a fast response speed for the control valve core 4. This ensures a long service life for the on-off solenoid valve.
[0042] The method for regulating and controlling fluid flow in this switching solenoid valve is as follows: in the initial position, one end of the control valve core 4 blocks or partially blocks the radial flow hole 33, at which point the fluid flow area is A1. When the switching solenoid valve is energized, the control valve core 4 tends to move rightward under the action of the electromagnetic force, compressing the spring 5. As the current increases, the electromagnetic force increases, compressing and deforming the spring 5, causing the control valve core 4 to shift rightward. The area of the radial flow hole 33 blocked changes accordingly, thereby changing the fluid flow area to A2 and altering the ease with which fluid flows through the switching solenoid valve, thereby regulating the damping force. This switching solenoid valve has a more streamlined structure, is more comfortable to use, and has a lower cost. Sufficient space is left to increase the outer diameter of the valve plate assembly 2, and the larger outer diameter of the valve plate assembly 2 improves the comfort of damping force regulation.
[0043] like Figure 3 As shown, the valve body 1 includes a main body 11, the edge of which protrudes axially to form a valve flange 14. The valve disc assembly 2 is affixed to the valve flange 14. A valve mounting hole 13 is defined in the center of the main body 11, through which the mounting post 31 passes. The main body 11 also includes a plurality of valve flow holes 12 that connect the two sides of the valve body 1, allowing liquid to flow through the valve flow holes 12. Both the valve mounting hole 13 and the valve flow holes 12 extend along the axis. The specific number of valve flow holes 12 in the valve body 1 is not limited and can be determined based on the required liquid flow rate.
[0044] like Figure 2As shown, one end of the valve disc assembly 2 is attached to the valve body flange 14, while the other end of the valve disc assembly 2 is attached to the control valve body 3. The specific structure of the valve disc assembly 2 is not limited, as long as it forms an overflow space S1 and a liquid flow channel between the valve disc assembly 2 and the valve body 1. In this embodiment, the valve disc assembly 2 includes at least two elastic valve discs, all of which are arranged in a sequentially attached manner along the axial direction. The specific number of elastic valve discs is not limited and can be adjusted according to the actual damping force required.
[0045] In order to make the valve plate group 2 formed by stacking elastic valve plates have elastic deformation ability, in this embodiment, the thickness and outer diameter of the elastic valve plates gradually increase or decrease along the axial direction. When the liquid flow pressure in the overflow space S1 is large enough, the valve plate group 2 can elastically deform in the direction away from the valve body 1, and a liquid flow channel can be formed between the valve body 1 and the valve plate group 2 to allow the liquid to flow out of the overflow space S1.
[0046] In order to adjust the magnitude of the damping force, the thickness, outer diameter and stacking number of the elastic valve sheet can be adjusted to form different flexural stiffnesses to adjust the pressure of the liquid flowing therethrough.
[0047] Based on the above structure, Figures 4 to 7 As shown, the control valve body includes a first control valve body 34 and a second control valve body 35 that are detachably connected, and the mounting post 31 is connected to one of the first control valve body 34 and the second control valve body 35. The specific connection method between the first control valve body 34 and the second control valve body 35 is not limited. In this embodiment, a plug-in post is provided on one of the first control valve body 34 and the second control valve body 35, and a plug-in hole is provided on the other of the first control valve body 34 and the second control valve body 35. During assembly, the plug-in post is inserted into the plug-in hole to prevent the first control valve body 34 and the second control valve body 35 from moving relative to each other in the radial direction.
[0048] The first control valve body 34 and the second control valve body 35 are processed separately and then assembled into the control valve body part, which reduces the processing difficulty of the control valve body part. The first control valve body 34 and the second control valve body 35 can be processed using a mold, eliminating the machining steps, lowering the cost and improving the processing efficiency.
[0049] The radial flow hole 33 is formed by forming a first body groove 341 on the first control valve body 34 and a second body groove 351 on the second control valve body 35. After assembly, the first body groove 341 and the second body groove 351 are aligned and together form the radial flow hole 33.
[0050] The specific shape of the radial flow hole 33 is not limited. The radial flow hole 33 is swallow-shaped. Along the direction of movement of the control valve core 4, the rate of change of the area blocked by the radial flow hole 33 gradually increases or decreases. Figure 4 As shown, the so-called "swallow shape" is the body outline of a swallow, including a pointed head and a roughly trapezoidal body. When the control valve core 4 is in different positions, the corresponding damping force values under different flow areas are uniform.
[0051] The specific number of radial flow holes 33 is not limited. Providing multiple radial flow holes 33 can increase the liquid flow rate and provide more comfortable use. In this embodiment, three radial flow holes 33 are opened on the side wall of the valve body groove 32. The three radial flow holes 33 are symmetrically arranged about the center of the valve body groove 32, which makes the liquid flow more evenly distributed.
[0052] Based on the above structure, Figure 2 、 Figure 5 and Figure 9 As shown, a column through hole 36 is axially opened inside the mounting column 31, and the column through hole 36 passes through the first main body 34 of the control valve and is connected to the valve body groove 32; a valve core through hole 41 is axially opened in the control valve core 4, and when the control valve core 4 moves along the axis, the liquid can flow in the valve core through hole 41.
[0053] The column through-hole 36 is connected to the valve core through-hole 41, and the adjustment screw 51 is located on the extension line of the valve core through-hole 41. When the damping force adjustment control accuracy or consistency is poor due to reasons such as the processing accuracy of the spring 5 and the processing tolerances of other components, a screwdriver can be inserted into the column through-hole 36, the valve core through-hole 41, and the middle space of the spring 5, and then the adjustment screw 51 can be tightened or loosened to adjust the length of the compressed spring 5. The interaction between the electromagnetic force and the rebound force of the spring 5 can determine the position of the control valve core 4 in the valve body groove 32. By adjusting the length of the compressed spring 5, the position of the control valve core 4 can be adjusted, and the magnitude of the damping force can be adjusted accordingly, achieving consistent and more precise control.
[0054] After the adjustment is completed, the spherical flow blocking member 9 is used to block the column through hole 36, which does not affect the liquid flow and normal use of the switch solenoid valve.
[0055] Based on the above structure, Figure 8 and Figure 9 As shown, the control valve core 4 includes a valve core body 42 and a valve core column 43 connected to each other. The free end of the valve core body 42 is provided with a spring limiting groove 421. The spring 5 (as shown in FIG. Figure 2 One end of the valve core (as shown) is inserted into the spring limiting groove 421. The valve core passes through the through hole 41 and is connected to the spring limiting groove 421. A step surface is formed between the valve core through hole 41 and the spring limiting groove 421. The end of the spring 5 abuts on the step surface, which serves to limit the spring 5.
[0056] The valve core body 42 is inserted into the electromagnetic base 7 and can move relative to the electromagnetic base 7. The outer periphery of the valve core body 42 abuts the inner wall surface of the electromagnetic base 7. When the control valve core 4 moves along the axis, the electromagnetic base 7 can guide the valve core body 42, ensuring that the control valve core 4 can move in a straight line.
[0057] like Figure 2 、 Figure 5 and Figure 9 As shown, the control valve core 4 also includes a retaining ring 44, which is fixedly connected to the outer circumferential surface of the valve core column 43 via radial connecting ribs 45. In this embodiment, the retaining ring 44 and the valve core body 42 are respectively connected to the two ends of the valve core column 43. The retaining ring 44 is inserted into the valve body groove 32 and can at least partially block the connection hole between the valve body groove 32 and the radial flow hole 33. The diameter of the retaining ring 44 is substantially equal to the diameter of the valve body groove 32. The outer wall of the retaining ring 44 substantially conforms to the inner wall of the valve body groove 32. The valve body groove 32 can guide the movement path of the retaining ring 44.
[0058] Figure 10 The arrowed curve in the middle shows the liquid flow path in the switch solenoid valve. Figure 2 and Figure 4 As shown, the liquid flowing out of the intermediate cylinder 300 enters the overflow space S1 through the valve flow through hole 12. As the liquid pressure in the overflow space S1 increases, the valve plate group 2 gradually bends and deforms; when the liquid pressure in the overflow space S1 is greater than the set value, the liquid flow channel between the valve body 1 and the valve plate group 2 opens, and the liquid flows out of the overflow space S1 through the liquid flow channel; the liquid flows into the valve body groove 32 through the radial flow hole 33 of the control valve body 3, and then enters the annular channel between the valve sleeve 6 and the valve seat 8 through the flow channel of the valve sleeve 6 and the electromagnetic base 7, and finally flows into the low-pressure area in the outer cylinder 200.
[0059] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims
1. Switch solenoid valve, characterized in that, include: Valve body (1); The valve plate group (2) is attached to the end surface of the valve body (1), and an overflow space S1 is formed between the valve body (1) and the valve plate group (2). When the liquid flow pressure in the overflow space S1 is greater than a set value, a liquid flow channel can be formed between the valve body (1) and the valve plate group (2); The control valve body (3) comprises a control valve main body and a mounting post (31), wherein the valve body (1) and the valve plate group (2) are sequentially sleeved on the mounting post (31), and the valve body (1), the valve plate group (2) and the control valve main body are sequentially fitted together; the control valve main body is provided with a valve body groove (32) along the axial direction, and a radial flow hole (33) is provided on the side wall of the valve body groove (32), and the valve body groove (32) is communicated with the radial flow hole (33); A control valve core (4), one end of which is inserted into the valve body groove (32), and the control valve core (4) can at least partially block the radial flow hole (33) when moving in the axial direction; a spring (5), one end of which abuts against the control valve core (4), and the spring (5) and the control valve body (3) are respectively located on opposite sides of the control valve core (4); A valve sleeve (6), wherein the valve body (1), the valve plate group (2) and the control valve body (3) are at least partially inserted into the valve sleeve (6); an electromagnetic base (7) sleeved on a portion of the outer periphery of the control valve core (4); and The valve seat (8) is sleeved on the outer sides of the valve sleeve (6) and the electromagnetic base (7).
2. The switch solenoid valve according to claim 1, characterized in that: The control valve main body includes a first control valve body (34) and a second control valve body (35), and the mounting column (31) is connected to one of the first control valve body (34) and the second control valve body (35).
3. The switch solenoid valve according to claim 2, characterized in that: The first control valve body (34) and the second control valve body (35) are respectively provided with grooves. After being assembled, the grooves on the first control valve body (34) are aligned with the grooves on the second control valve body (35) and together form the radial flow hole (33).
4. The switch solenoid valve according to claim 1, characterized in that: The radial flow hole (33) is swallow-shaped, and when the control valve core (4) moves to different positions, the flow area of the radial flow hole (33) corresponds to a uniform damping force value.
5. The switch solenoid valve according to claim 1, characterized in that: Three radial circulation holes (33) are provided on the side wall of the valve body groove (32), and the three radial circulation holes (33) are symmetrically arranged about the center of the valve body groove (32).
6. The switch solenoid valve according to any one of claims 1 to 5, characterized in that: The switch solenoid valve further includes an adjusting screw (51) abutting against the other end of the spring (5); A column through-hole (36) is axially provided inside the mounting column (31), the column through-hole (36) is connected to the valve body groove (32), and a flow blocking member (9) is provided in the column through-hole (36); a valve core through-hole (41) is axially provided in the control valve core (4), the column through-hole (36) is connected to the valve core through-hole (41), and the adjusting screw (51) is located on the extension line of the valve core through-hole (41).
7. The switch solenoid valve according to any one of claims 1 to 5, characterized in that: The valve body (1) includes a valve main body (11), the edge of the valve main body (11) protrudes axially to form a valve body flange (14), and the valve plate group (2) is attached to the valve body flange (14); a valve installation through hole (13) for the installation column (31) to pass through is provided in the middle of the valve main body (11), and a valve flow through hole (12) for liquid to flow through is also provided on the valve main body (11).
8. The switch solenoid valve according to any one of claims 1 to 5, characterized in that: The valve plate group (2) comprises at least two elastic valve plates, and all of the elastic valve plates are arranged in sequence along the axial direction.
9. The switch solenoid valve according to any one of claims 1 to 5, characterized in that: The control valve core (4) comprises a valve core body (42) and a valve core column (43) connected to each other, a spring limiting groove (421) is provided at the free end of the valve core body (42), a valve core through-hole (41) is connected to the spring limiting groove (421), and a step surface for abutting against the end of the spring (5) is formed between the valve core through-hole (41) and the spring limiting groove (421); The control valve core (4) further comprises a limiting ring (44), wherein the limiting ring (44) is fixedly connected to the outer peripheral surface of the valve core column (43) via radial connecting ribs (45), and the limiting ring (44) is inserted into the valve body groove (32).
10. A damping adjustment device comprising an outer cylinder (200), an intermediate cylinder (300) passing through the outer cylinder (200), and a piston rod (400) passing through the intermediate cylinder (300), characterized in that: The damping adjustment device also includes a switch solenoid valve (100) as described in any one of claims 1 to 9, wherein the sides of the outer cylinder (200) and the intermediate cylinder (300) are respectively provided with through holes, the valve seat (8) is fixedly connected to the through hole on the side of the outer cylinder (200), and the valve body (1) is fixedly connected to the through hole on the side of the intermediate cylinder (300). When the piston rod (400) moves axially, the liquid flow in the intermediate cylinder (300) can enter the low-pressure area of the outer cylinder (200) through the switch solenoid valve (100).