Valve element, electromagnetic valve, active suspension and vehicle

Abstract

The invention discloses a valve element, an electromagnetic valve, an active suspension and a vehicle. The valve element comprises an anti-collision gasket, a first sealing gasket and a connecting part. The anti-collision gasket is arranged at the first end of the valve element. The first sealing washer is arranged at the second end of the valve element. The connecting part is arranged in the valve element, and the anti-collision gasket and the first sealing gasket are connected into a whole through the connecting part. According to the electromagnetic valve, the anti-collision gasket and the first sealing gasket are connected into a whole through the connecting part, so that the anti-collision gasket and the first sealing gasket are connected with the valve element more firmly, the reliability of the electromagnetic valve is improved, and the service life of the electromagnetic valve is prolonged.

Description

Technical Field

[0001] The present invention generally relates to the technical field of control valves, and more particularly to a valve core, an electromagnetic valve, an active suspension and a vehicle. Background Art

[0002] In existing automobiles, many functional systems need to use air as a power source, such as the air suspension system in luxury cars and the seat lifting system in heavy trucks. It is necessary to set an electromagnetic valve in the pipeline or component to control the on-off, but the electromagnetic valve in the prior art has poor reliability.

[0003] Therefore, it is necessary to provide a valve core, an electromagnetic valve, an active suspension and a vehicle to at least partially solve the above problems. Summary of the Invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further detailed in the Detailed Description section. The Summary of the Invention section of the present invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0005] To at least partially solve the above problems, a first aspect of the present invention provides a valve core, comprising:

[0006] A shock-proof gasket, which is arranged at the first end of the valve core;

[0007] A first sealing gasket, which is arranged at the second end of the valve core;

[0008] A connecting portion, which is arranged inside the valve core and connects the shock-proof gasket and the first sealing gasket into one body.

[0009] Optionally, a first installation groove is arranged at the first end of the valve core, and the first installation groove is used for installing and fixing the shock-proof gasket;

[0010] A second installation groove is arranged at the second end of the valve core, and the second installation groove is used for installing and fixing the first sealing gasket;

[0011] A third installation groove is arranged inside the valve core, and the third installation groove is used for installing and fixing the connecting portion;

[0012] The third installation groove communicates the first installation groove and the second installation groove.

[0013] Optionally, the valve core further comprises:

[0014] A second sealing washer, which is arranged on the outer peripheral side of the valve core and located between the anti-collision washer and the first sealing washer;

[0015] The connecting part connects the anti-collision washer, the first sealing washer and the second sealing washer into one body.

[0016] Optionally, a fourth installation groove is arranged on the outer peripheral side of the valve core, and the fourth installation groove is used for installing and fixing the second sealing washer, and the third installation groove communicates the first installation groove, the second installation groove and the fourth installation groove.

[0017] Optionally, the third installation groove is vertically connected or obliquely connected to the fourth installation groove.

[0018] Optionally, the anti-collision washer, the first sealing washer, the second sealing washer and the connecting part are integrally formed on the valve core.

[0019] Optionally, the anti-collision washer is provided with a plurality of protrusions, and the protrusions protrude along the axial direction of the valve core.

[0020] Optionally, a first balance hole is arranged on the valve core, and the first balance hole is used for communicating the two axial ends of the valve core.

[0021] The second aspect of the present invention provides a solenoid valve for controlling an air flow pipeline, including:

[0022] A valve seat, which is provided with a sliding groove along the axial direction;

[0023] The valve core according to any one of the above technical solutions, the valve core is arranged in the sliding groove and can slide along the sliding groove;

[0024] Wherein, the first end of the valve core faces the valve seat, the second end of the valve core faces the valve orifice, and the valve core can control the opening and closing of the valve orifice.

[0025] Optionally, the solenoid valve further includes:

[0026] An iron core, which is arranged on the first side of the valve seat, and the valve core is arranged on the second side of the valve seat;

[0027] A valve rod, which passes through the valve seat, the first end of the valve rod is connected to the iron core, and the second end of the valve rod is connected to the valve core.

[0028] Optionally, the first end of the valve rod is clamped with the iron core, and the second end of the valve rod is clamped with the valve core.

[0029] Optionally, a first clamping joint is provided at the first end of the valve stem, a second clamping joint is provided at the second end of the valve stem, and the first clamping joint and the second clamping joint are hollow.

[0030] Optionally, a second balance hole is provided on the valve seat. The first end of the second balance hole communicates with the gap between the iron core and the valve seat, and the second end of the second balance hole communicates with the gap between the valve seat and the valve core.

[0031] The third aspect of the present invention provides an active suspension, including the electromagnetic valve in any one of the above technical solutions.

[0032] The fourth aspect of the present invention provides a vehicle, including the active suspension in any one of the above technical solutions or the electromagnetic valve in any one of the above technical solutions.

[0033] According to a valve core, an electromagnetic valve, an active suspension and a vehicle of the present invention, the valve core is a movable component, and an anti-collision gasket and a first sealing gasket are provided on the valve core. The anti-collision gasket and the first sealing gasket are connected into one body through a connecting portion, so that the anti-collision gasket and the first sealing gasket are more firmly connected to the valve core, and will not be displaced or fall off after long-term use, and the control of the gas path is stable, thereby improving the reliability of the electromagnetic valve and extending the service life of the electromagnetic valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The following drawings of the embodiments of the present invention are here as a part of the present invention for understanding the present invention. The embodiments of the present invention are shown in the drawings and their descriptions are used to explain the principles of the present invention. In the drawings,

[0035] Figure 1 is a perspective view of an electromagnetic valve according to a preferred embodiment of the present invention;

[0036] Figure 2 is a perspective view of an electromagnetic valve according to a preferred embodiment of the present invention;

[0037] Figure 3 is a cross-sectional view of an electromagnetic valve according to a preferred embodiment of the present invention;

[0038] Figure 4 is a combined state diagram of a valve core, an anti-collision gasket, a second sealing gasket and a first sealing gasket according to a preferred embodiment of the present invention;

[0039] Figure 5 is a cross-sectional view of a valve core according to a preferred embodiment of the present invention;

[0040] Figure 6 is a combined state diagram of an anti-collision gasket, a second sealing gasket and a first sealing gasket according to a preferred embodiment of the present invention;

[0041] Figure 7 Combined state diagram of the iron core, valve seat and valve core according to a preferred embodiment of the present invention;

[0042] Figure 8 is Figure 7 The partial enlarged view in

[0043] Description of reference numerals:

[0044] 100: Base 110: Valve port

[0045] 120: Sealing ring 210: Valve seat

[0046] 211: Second balance hole 220: Valve core

[0047] 221: Anti-collision gasket 222: Second sealing gasket

[0048] 223: First sealing gasket 224: First installation groove

[0049] 225: Fourth installation groove 226: Second installation groove

[0050] 227: Third installation groove 228: First balance hole

[0051] 229: Second card slot 230: Valve stem

[0052] 231: First card connector 240: Spring

[0053] 250: Iron core 251: First card slot

[0054] 260: Magnetic isolation tube 270: Connection part

[0055] 310: Coil 320: Terminal

[0056] 330: Magnetic conductive ring 340: Coil skeleton

[0057] 400: Outer shell 500: Sealing seat

[0058] 600: Plug Detailed implementation manners

[0059] In the following description, numerous specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other instances, in order to avoid confusion with the present invention, some well-known technical features are not described.

[0060] To thoroughly understand the present invention, a detailed description will be presented in the following. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the concept of these exemplary embodiments to those of ordinary skill in the art. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present invention are described in detail below. However, in addition to these detailed descriptions, the present invention may also have other embodiments.

[0061] The ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" does not imply the existence of a "second component" by itself, and the term "second component" does not imply the existence of a "first component" by itself.

[0062] It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and similar expressions used in the present invention are for illustrative purposes only and not for limitation.

[0063] The present invention discloses a valve core, a solenoid valve, an active suspension and a vehicle.

[0064] Now, exemplary embodiments according to the present invention will be described in more detail with reference to the accompanying drawings.

[0065] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 shown, in a preferred embodiment, a valve core 220 for a solenoid valve includes: a shockproof gasket 221, a first sealing gasket 223 and a connecting portion 270;

[0066] The shockproof gasket 221 is disposed at the first end of the valve core 220;

[0067] The first sealing gasket 223 is disposed at the second end of the valve core 220;

[0068] The connecting portion 270 is disposed inside the valve core 220, and the connecting portion 270 connects the shockproof gasket 221 and the first sealing gasket 223 into one body.

[0069] There is one connecting portion 270 disposed inside the valve core 220 in the figure, or multiple connecting portions 270 can also be provided to increase the connection strength between the shockproof gasket 221 and the first sealing gasket 223.

[0070] In the spool 220 of this embodiment, the anti-collision gasket 221 and the first sealing gasket 223 are connected into one body through the connecting portion 270, so that the anti-collision gasket 221 and the first sealing gasket 223 are more firmly connected to the spool 220 and will not be misaligned or detached after long-term use, and the control of the gas path is stable, thereby improving the reliability of the solenoid valve and extending the service life of the solenoid valve.

[0071] In one embodiment, as Figure 4 , Figure 5 shown, a first mounting groove 224 is provided at the first end (the end facing the valve seat 210) of the spool 220, and the first mounting groove 224 is used for mounting and fixing the anti-collision gasket 221;

[0072] A second mounting groove 226 is provided at the second end (the end facing the gas flow pipeline) of the spool 220, and the second mounting groove 226 is used for mounting and fixing the first sealing gasket 223;

[0073] A third mounting groove 227 is provided inside the spool 220, and the third mounting groove 227 is used for mounting and fixing the connecting portion 270;

[0074] The third mounting groove 227 communicates the first mounting groove 224 and the second mounting groove 226.

[0075] The third mounting groove 227 cannot be exposed on the surface of the spool 220, otherwise the connecting portion 270 will be exposed on the surface of the spool 220, affecting the sliding of the spool 220 in the sliding groove.

[0076] The first end of the third mounting groove 227 is connected to the first mounting groove 224, and the second end is connected to the second mounting groove 226, thereby communicating the first mounting groove 224 and the second mounting groove 226.

[0077] In one embodiment, the anti-collision gasket 221, the first sealing gasket 223 and the connecting portion 270 are all made of rubber material, and through the vulcanization molding process, these components can be integrally formed on the spool 220.

[0078] In one embodiment, as Figure 4 , Figure 5 , Figure 6 shown, the spool 220 further includes:

[0079] A second sealing gasket 222, the second sealing gasket 222 is arranged on the outer peripheral side of the spool 220 and is located between the anti-collision gasket 221 and the first sealing gasket 223, and the second sealing gasket 222 is used for sealing the gap between the outer peripheral side of the spool 220 and the inner wall of the sliding groove;

[0080] The connecting portion 270 connects the anti-collision gasket 221, the first sealing gasket 223 and the second sealing gasket 222 into one body.

[0081] Since the valve core 220 in this embodiment has a cavity inside, a first balance hole 228 is provided in the upper part of the cavity. The first balance hole 228 communicates with the gap between the valve core 220 and the valve seat 210, and this gap further communicates with the gap between the outer peripheral side of the valve core 220 and the inner wall of the sliding groove. When the valve core 220 seals the valve port 110, it is necessary to seal the gap between the outer peripheral side of the valve core 220 and the inner wall of the sliding groove. Otherwise, the sealing of the valve port 110 by the valve core 220 will fail.

[0082] The second sealing washer 222 also plays a guiding role in the sliding of the valve core 220, restricting the valve core 220 to slide linearly, ensuring that the valve core 220 is uniformly stressed during the opening and closing of the valve, and ensuring the sealing effect on the valve port 110.

[0083] Since the second sealing washer 222 is arranged between the anti-collision washer 221 and the first sealing washer 223, the connecting portion 270 is divided into two sections, and the two sections can be either on a straight line or not on a straight line.

[0084] In one embodiment, as Figure 3 , Figure 4 , Figure 5 shown, a fourth installation groove 225 is provided on the outer peripheral side of the valve core 220 for installing and fixing the second sealing washer 222, and the third installation groove 227 communicates the first installation groove 224, the second installation groove 226 and the fourth installation groove 225.

[0085] The cross-sections of the anti-collision washer 221 and the second sealing washer 222 can both be rectangular, the cross-section of the first sealing washer 223 can be a rectangular shape with a cut-off corner, and the cross-section of the connecting portion 270 can be circular.

[0086] In one embodiment, as Figure 4 , Figure 5 shown, the third installation groove 227 is perpendicularly connected or obliquely connected to the first installation groove 224, the second installation groove 226 and the fourth installation groove 225.

[0087] When the connecting portion 270 is divided into two sections and the two sections are not on a straight line, the third installation groove 227 is also divided into two sections and the two sections are not on a straight line.

[0088] In one embodiment, as Figure 4 , Figure 6 shown, the anti-collision washer 221, the first sealing washer 223, the second sealing washer 222 and the connecting portion 270 are integrally formed on the valve core 220.

[0089] In one embodiment, the anti-collision washer 221, the first sealing washer 223, the second sealing washer 222, and the connecting portion 270 are all made of rubber material. Through the vulcanization molding process, these components can be integrally formed on the valve core 220.

[0090] In one embodiment, as Figure 4 , Figure 6 shown, the anti-collision washer 221 is provided with a plurality of protrusions. The plurality of protrusions protrude along the axial direction of the valve core 220, and can also be regarded as protruding in the direction towards the valve seat 210.

[0091] The protrusion protrudes from the end of the valve core 220, which can improve the buffering effect on the valve core 220.

[0092] In one embodiment, as Figure 7 shown, a first balance hole 228 is provided on the valve core 220. The first balance hole 228 is used to communicate the two axial ends of the valve core 220. It can also be regarded that the first end of the first balance hole 228 communicates with the gap between the valve seat 210 and the valve core 220, and the second end of the first balance hole 228 communicates with the space outside the solenoid valve.

[0093] An embodiment of the present invention further provides a solenoid valve. As Figure 1 , Figure 2 , Figure 3 , Figure 7 shown, the solenoid valve is used to control the air flow pipeline. The air flow pipeline is a charging pipeline or an exhaust pipeline, and the flowing gas is usually air, or it can also be other special gases.

[0094] The solenoid valve includes: a valve seat 210 and a valve core 220;

[0095] The valve seat 210 is provided with a chute along the axial direction;

[0096] The valve core 220 is arranged in the chute and can slide along the chute;

[0097] Wherein, the first end of the valve core 220 faces the valve seat 210, the second end of the valve core 220 faces the valve port 110, and the valve core 220 can control the opening and closing of the valve port 110.

[0098] As Figure 3 shown, the end of the chute facing the air flow pipeline is provided with an opening with a larger diameter. The valve core 220 enters the chute from this opening, and the valve core 220 does not entirely enter the chute, and part of it is outside this opening.

[0099] When the valve core 220 moves downward, the end of the valve core 220 facing the air flow pipeline contacts the valve port 110 in the base 100, and the first sealing washer 223 is used to seal the valve port 110, thus closing the air flow pipeline; when the valve core 220 moves upward, the end of the valve core 220 facing the air flow pipeline disengages from the valve port 110 in the base 100, thus opening the air flow pipeline.

[0100] When the valve core 220 moves upward, the anti-collision washer 221 can form a buffer between the valve core 220 and the valve seat 210, effectively reducing noise.

[0101] In one embodiment, as Figure 3 shown, the solenoid valve further includes:

[0102] A base 100, in which a valve port 110 is provided, and a sealing ring 120 is provided outside the base 100.

[0103] The solenoid valve in this embodiment belongs to an inserted valve. The solenoid valve is inserted on the air flow pipeline to be controlled, and the valve port 110 forms a gateway in the air flow pipeline. By controlling the opening and closing of the valve port 110, the on-off of the air flow pipeline can be realized.

[0104] In one embodiment, the solenoid valve further includes:

[0105] An iron core 250, which is arranged on the first side of the valve seat 210, and a valve core 220 is arranged on the second side of the valve seat 210;

[0106] A valve rod 230, which passes through the valve seat 210. The first end of the valve rod 230 is connected to the iron core 250, and the second end of the valve rod 230 is connected to the valve core 220.

[0107] The valve seat 210 is provided with a through hole corresponding to the valve rod 230, and the valve rod 230 can reciprocate in the through hole. When the iron core 250 moves (under the electromagnetic force of the coil 310 or the elastic force of the spring 240), the valve core 220 is driven to move synchronously through the valve rod 230.

[0108] In one embodiment, as Figure 5 、 Figure 7 、 Figure 8 shown, the first end of the valve rod 230 is clamped to the iron core 250, and the second end of the valve rod 230 is clamped to the valve core 220.

[0109] A first clamping groove 251 is provided in the middle of the iron core 250 corresponding to the first end of the valve rod 230, and a second clamping groove 229 is provided in the middle of the valve core 220 corresponding to the second end of the valve rod 230. Through clamping, the connection firmness of the valve rod 230 with the iron core 250 and the valve core 220 can be ensured.

[0110] In one embodiment, asFigure 7 , Figure 8 As shown in Figure 8 , a first clamping joint 231 is provided at the first end of the valve stem 230, and a second clamping joint is provided at the second end of the valve stem 230. The first clamping joint 231 and the second clamping joint are hollow. By setting the first clamping joint 231 and the second clamping joint to be hollow structures, it is convenient to deform under the action of processing equipment and achieve clamping with the clamping groove.

[0111] In one embodiment, as Figure 7 shown in Figure 7 , a second balance hole 211 is provided on the valve seat 210. The first end of the second balance hole 211 communicates with the gap between the iron core 250 and the valve seat 210, and the second end of the second balance hole 211 communicates with the gap between the valve seat 210 and the valve core 220.

[0112] The second balance hole 211 and the first balance hole 228 on the valve core 220 act together. The second end of the first balance hole 228 first communicates with the cavity inside the valve core 220, and then communicates with the space outside the solenoid valve through the cavity. By providing the second balance hole 211 and the first balance hole 228, it is possible to prevent the iron core 250 from being blocked when moving. Since the iron core 250 is located in the accommodation cavity formed by the magnetic isolation tube 260 and the valve seat 210, and the magnetic isolation tube 260 and the valve seat 210 are hermetically connected, the accommodation cavity will form a closed space. If the pressure is not balanced, the iron core 250 will be affected by air resistance when moving, and moisture (caused by the high-pressure gas source) may also accumulate in the accommodation cavity, affecting the performance of the solenoid valve.

[0113] In one embodiment, as Figure 3 shown in Figure 3 , the solenoid valve further includes:

[0114] A housing 400, in which a coil bobbin 340 is provided. A coil 310 is provided on the coil bobbin 340. When the coil 310 is energized, an electromagnetic field can be generated, and the electromagnetic force acts on the iron core 250 to generate a driving force, which can drive the iron core 250 to move towards the valve seat 210.

[0115] In order to improve the electromagnetic field, a magnetic conductive ring 330 is further provided outside the coil bobbin 340. The magnetic conductive ring 330 can change the distribution of the magnetic field, and the iron core 250 is arranged inside the magnetic isolation tube 260. If the magnetic isolation tube 260 is not provided, the iron core 250 will not work properly.

[0116] In one embodiment, as Figure 3 shown in Figure 3 , the solenoid valve further includes:

[0117] A spring 240 is sleeved on a valve stem 230. The first end of the spring 240 abuts against an iron core 250, and the second end of the spring 240 abuts against a valve seat 210. When the coil 310 is de-energized, the elastic force of the spring 240 can drive the iron core 250 to reset, and then the iron core 250 drives the valve core 220 to reset synchronously through the valve stem 230.

[0118] In one embodiment, as Figure 3 shown, the solenoid valve further includes:

[0119] A plug 600 is arranged at the end of the housing 400. Terminals 320 are arranged in the plug 600. The terminals 320 are electrically connected to the coil 310. When the plug 600 is plugged into an external power supply, the terminals 320 are electrically connected to the external power supply, and electric energy can be provided for the coil 310.

[0120] A sealing seat 500 seals the plug 600 and the housing 400.

[0121] An embodiment of the present invention further provides an active suspension, including an air flow pipeline, and further including the solenoid valve according to any one of the above embodiments. The solenoid valve controls the on-off of the air flow pipeline.

[0122] In one embodiment, the air flow pipeline is a lifting pipeline of an air suspension system. The solenoid valve controls the inflation or deflation of the air suspension system to control the lifting of the air suspension system.

[0123] An embodiment of the present invention further provides a vehicle, including the active suspension or the solenoid valve according to any one of the above embodiments.

[0124] In one embodiment, the air flow pipeline is a pipeline of a seat lifting system. The solenoid valve controls the inflation or deflation of the seat lifting system to control the lifting of the seat lifting system.

[0125] According to a valve core, solenoid valve, active suspension and vehicle of the present invention, the valve core is a movable part. An anti-collision gasket and a first sealing gasket are arranged on the valve core. The anti-collision gasket and the first sealing gasket are connected into one body through a connecting part, so that the anti-collision gasket and the first sealing gasket are more firmly connected to the valve core, and will not be displaced or fall off after long-term use. The control of the air path is stable, thereby improving the reliability of the solenoid valve and prolonging the service life of the solenoid valve.

[0126] In all the above preferred embodiments, the processes and steps described are only examples. Unless adverse effects occur, various processing operations can be performed in an order different from the above processes. The step order of the above processes can also be increased, combined or deleted according to actual needs.

[0127] In understanding the scope of the present invention, the term "comprising" and its derivatives as used herein are intended to be open-ended terms that specify the presence of the recited features, elements, components, groups, wholes, and / or steps, but do not preclude the presence of other unrecited features, elements, components, groups, wholes, and / or steps. This concept also applies to words having similar meanings, such as the terms "including", "having", and their derivatives.

[0128] As used herein, the term "attached" or "attachment" includes: a configuration in which an element is directly fixed to another element by directly fixing the element to the other element; a configuration in which an element is indirectly fixed to another element by fixing the element to an intermediate member, which in turn is fixed to the other element; and a configuration in which one element is integral with another element, i.e., one element is substantially a part of the other element. This definition also applies to words having similar meanings, such as "connected", "coupled", "joined", "mounted", "adhered", "fixed", and their derivatives. Finally, degree terms such as "substantially", "about", and "approximately" as used herein represent the amount of deviation that modifies the term such that the final result is not significantly changed.

[0129] Unless otherwise defined, the technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art of the present invention. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The features described in one embodiment herein can be applied to another embodiment alone or in combination with other features, unless the feature is not applicable or otherwise stated in that other embodiment.

[0130] The present invention has been illustrated by the above embodiments, but it should be understood that the above embodiments are only for the purpose of exemplification and illustration, and are not intended to limit the present invention to the scope of the described embodiments. In addition, those skilled in the art can understand that the present invention is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the present invention, and these variations and modifications all fall within the scope of protection required by the present invention.

Claims

1. A spool for a solenoid valve, characterized in that, Comprising: An anti-collision washer, which is arranged at the first end of the valve core; A first sealing washer, which is arranged at the second end of the valve core; A connecting part, which is arranged inside the valve core, and the connecting part connects the anti-collision washer and the first sealing washer into one body.

2. The spool according to claim 1, characterized in that, A first installation groove is arranged at the first end of the valve core, and the first installation groove is used for installing and fixing the anti-collision washer; A second installation groove is arranged at the second end of the valve core, and the second installation groove is used for installing and fixing the first sealing washer; A third installation groove is arranged inside the valve core, and the third installation groove is used for installing and fixing the connecting part; The third installation groove communicates the first installation groove and the second installation groove.

3. The spool according to claim 2, characterized in that, Further comprising: A second sealing washer, which is arranged on the outer peripheral side of the valve core and is located between the anti-collision washer and the first sealing washer; The connecting part connects the anti-collision washer, the first sealing washer and the second sealing washer into one body.

4. The spool according to claim 3, characterized in that, A fourth installation groove is arranged on the outer peripheral side of the valve core, and the fourth installation groove is used for installing and fixing the second sealing washer, and the third installation groove communicates the first installation groove, the second installation groove and the fourth installation groove.

5. The spool according to claim 4, characterized in that, The third installation groove is vertically connected or obliquely connected to the fourth installation groove.

6. The spool according to claim 4, wherein, The anti-collision washer, the first sealing washer, the second sealing washer and the connecting part are integrally formed on the valve core.

7. The spool according to claim 1, characterized in that, The anti-collision washer is provided with a plurality of protrusions, and the protrusions protrude along the axial direction of the valve core.

8. The spool according to claim 1, wherein, A first balance hole is arranged on the valve core, and the first balance hole is used for communicating the two axial ends of the valve core.

9. A solenoid valve for controlling an air flow pipeline, characterized in that, Comprising: A valve seat, which is provided with a chute along the axial direction; The valve core according to any one of claims 1-8, the valve core is arranged in the chute and can slide along the chute; Wherein, the first end of the valve core faces the valve seat, the second end of the valve core faces the valve port, and the valve core can control the opening and closing of the valve port.

10. The solenoid valve according to claim 9, characterized in that, Further comprising: An iron core, which is arranged on the first side of the valve seat, and the valve core is arranged on the second side of the valve seat; A valve rod, which passes through the valve seat, the first end of the valve rod is connected to the iron core, and the second end of the valve rod is connected to the valve core.

11. The solenoid valve according to claim 10, characterized in that, The first end of the valve rod is clamped with the iron core, and the second end of the valve rod is clamped with the valve core.

12. The solenoid valve according to claim 11, characterized in that, A first clamping head is arranged at the first end of the valve rod, a second clamping head is arranged at the second end of the valve rod, and the first clamping head and the second clamping head are hollow.

13. The solenoid valve according to claim 10, characterized in that, A second balance hole is arranged on the valve seat, the first end of the second balance hole communicates the gap between the iron core and the valve seat, and the second end of the second balance hole communicates the gap between the valve seat and the valve core.

14. An active suspension, characterized in that, Comprising the solenoid valve according to any one of claims 9-13.

15. A vehicle, characterized in that, Comprising the active suspension according to claim 14 or the solenoid valve according to any one of claims 9-13.

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