CN221482799U - Solenoid valve, air suspension system and vehicle - Google Patents

Abstract

The embodiment of the application provides an electromagnetic valve, an air suspension system and a vehicle, wherein the electromagnetic valve comprises a valve body; the iron core cover is fixed on the valve body; the movable iron core is movably arranged in the movable cavity, and a stop part is arranged on the movable iron core; the elastic piece is clamped between the iron core cover and the stop part, so that the relative magnetic attraction area between the static iron core and the movable iron core is ensured, the magnetic attraction between the static iron core and the movable iron core is enhanced, and the flexibility and the stability of the switch control of the electromagnetic valve are improved.

Description

Solenoid valve, air suspension system and vehicle

Technical Field

The utility model belongs to the technical field of air path control structures, and particularly relates to an electromagnetic valve, an air suspension system and a vehicle.

Background

The control of the air circuit system mainly comprises air circuit pressure regulation control and air circuit system on-off control. The pressure regulation control mainly depends on a pneumatic proportional valve or a high-speed electromagnetic valve to realize high-frequency regulation control, the gas circuit on-off mainly depends on a switch type electromagnetic valve, and the action of an electromagnetic valve driving part is realized through the control of an electric signal, so that the on-off of the gas circuit is controlled.

In the current electromagnetic valve, the magnetic iron core is magnetically attracted by the matching of the electrified coil and the static iron core, and the on-off control of the air circuit is realized by the movement of the movable iron core. But a spring is arranged between the static iron core and the movable iron core in the prior art, so that the magnetic attraction between the static iron core and the movable iron core is influenced, and the hysteresis or even the failure of the switch control of the electromagnetic valve is easily caused.

Disclosure of utility model

It is an object of the present utility model to provide a new solution for solenoid valves, air suspension systems and vehicles.

According to a first aspect of the present utility model, there is provided a solenoid valve comprising:

A valve body;

The iron core cover is fixed on the valve body;

The static iron core is fixed at one end of the iron core cover, which is far away from the valve body, and a movable cavity is formed between the static iron core and the iron core cover and the valve body, the movable iron core is movably arranged in the movable cavity, and a stop part is arranged on the movable iron core;

The elastic piece is clamped between the iron core cover and the stop part along the moving direction of the movable iron core.

Optionally, the iron core cover comprises a first connecting section, a bending section and a second connecting section which are sequentially connected, the first connecting section is fixed on the valve body, and the static iron core is fixed on the second connecting section;

the elastic piece is clamped between the bending section and the stop part.

Optionally, the periphery of the valve body is provided with a step surface, and the first connecting section is in interference sleeve connection with the step surface.

Optionally, the stop portion is a boss disposed on an outer peripheral side of the movable iron core, and the elastic member is sandwiched between the iron core cover and the boss.

Optionally, the elastic element is a spring, and the spring is sleeved on the movable iron core and is in clearance fit with the movable iron core.

Optionally, the static iron core is opposite to the movable iron core, a first magnetic attraction plane is formed on one side of the static iron core, which faces the movable iron core, and a second magnetic attraction plane is formed on one side of the movable iron core, which faces the static iron core.

Optionally, an air inlet hole and an air outlet hole are formed in the valve body, and a flexible structure is arranged on the movable iron core;

Under the condition that the static iron core magnetically attracts the movable iron core, the movable iron core and the flexible structure are far away from the air outlet hole, and the air inlet hole is communicated with the air outlet hole;

Under the condition that the static iron core releases the magnetic attraction to the movable iron core, the movable iron core and the flexible structure are close to the air outlet hole, and the flexible structure seals the air outlet hole.

Optionally, an assembling groove is formed in one side, facing the air outlet hole, of the movable iron core, and the flexible structure is embedded in the assembling groove.

Optionally, a plurality of air inlets are arranged on the valve body, and the air inlets are distributed on the periphery of the valve body at intervals.

Optionally, the aperture range of the air outlet hole is 0.9-1.5mm.

According to a second aspect of the present utility model there is provided an air suspension system comprising a solenoid valve according to the first aspect.

According to a third aspect of the present utility model there is provided a vehicle comprising the air suspension system of the second aspect.

The utility model has the technical effects that:

The embodiment of the application provides a solenoid valve, which comprises a valve body; the iron core cover is fixed on the valve body; the static iron core is fixed at one end of the iron core cover, which is far away from the valve body, and a movable cavity is formed between the static iron core and the iron core cover and the valve body, the movable iron core is movably arranged in the movable cavity, and a stop part is arranged on the movable iron core; the elastic piece is clamped between the iron core cover and the stop part, so that the relative magnetic attraction area between the static iron core and the movable iron core is ensured, the magnetic attraction between the static iron core and the movable iron core is enhanced, and the flexibility and the stability of the electromagnetic valve switch control are improved.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

FIG. 1 is a cross-sectional view of a solenoid valve according to an embodiment of the present utility model in a closed state;

FIG. 2 is a cross-sectional view of an electromagnetic valve according to an embodiment of the present utility model in a valve-open state;

FIG. 3 is a perspective view of a valve body of a solenoid valve according to an embodiment of the utility model;

FIG. 4 is a front view of a valve body of a solenoid valve according to an embodiment of the utility model;

FIG. 5 is a cross-sectional view of a valve body of a solenoid valve according to an embodiment of the utility model;

Fig. 6 is a perspective view of an iron core cover of the electromagnetic valve according to the embodiment of the utility model;

Fig. 7 is a front view of an iron core cover of a solenoid valve according to an embodiment of the present utility model;

FIG. 8 is a cross-sectional view of a core housing of a solenoid valve according to an embodiment of the utility model;

FIG. 9 is a perspective view of a movable iron core of a solenoid valve according to an embodiment of the present utility model;

FIG. 10 is a second perspective view of a movable iron core of a solenoid valve according to an embodiment of the present utility model;

Fig. 11 is a sectional view of a movable iron core of a solenoid valve according to an embodiment of the present utility model.

Wherein: 1. a valve body; 11. an air inlet hole; 12. an air outlet hole; 13. a step surface; 2. an iron core cover; 21. a first connection section; 22. bending sections; 23. a second connection section; 3. a stationary core; 4. a movable iron core; 41. a stop portion; 42. an assembly groove; 5. an elastic member; 6. a flexible structure.

Detailed Description

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The features of the application "first", "second" and the like in the description and in the claims may be used for the explicit or implicit inclusion of one or more such features. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Referring to fig. 1 and 2, an embodiment of the present application provides a solenoid valve including:

a valve body 1;

an iron core cover 2, wherein the iron core cover 2 is fixed on the valve body 1;

The static iron core 3 and the movable iron core 4, wherein the static iron core 3 is fixed at one end of the iron core cover 2 far away from the valve body 1, a movable cavity is formed between the static iron core 3 and the iron core cover 2 and the valve body 1, the movable iron core 4 is movably arranged in the movable cavity, and the movable iron core 4 is provided with a stop part 41;

And an elastic member 5, wherein the elastic member 5 is interposed between the core cover 2 and the stopper 41 along the moving direction of the movable core 4.

Specifically, the electromagnetic valve has a valve opening and closing direction along the vertical direction in fig. 1, and the movable iron core 4 is movably arranged in the movable cavity along the valve opening and closing direction and is kept opposite to the static iron core 3.

In one embodiment, the outer peripheral side of the movable iron core 4 is provided with a groove or a plane so as to form a gap between the movable iron core 4 and the iron core cover 2, thereby realizing the up-and-down ventilation of the side plane of the movable iron core 4, and avoiding the air resistance generated by the lamination of the movable iron core 4 and the static iron core 3 to prevent the movable iron core 4 from moving.

The elastic member 5 is interposed between the core cover 2 and the stopper 41 in the direction of the switch valve, so as to compress the elastic member 5 when the movable core 4 moves in the direction approaching the stationary core 3, and the elastic member 5 provides a buffer for the movement of the movable core 4, so as to avoid hard collision between the movable core 4 and the stationary core 3; when the movable iron core 4 moves away from the stationary iron core 3, the elastic member 5 in a compressed state can provide power for resetting the movable iron core 4, so that the efficiency of resetting the movable iron core 4 is improved.

Specifically, the valve body 1 is provided with an air inlet hole 11 and an air outlet hole 12, and the electromagnetic valve comprises an electromagnetic coil which is wound on the periphery of the iron core cover 2 and is opposite to the static iron core 3 so as to form an electromagnet through the electromagnetic coil and the static iron core 3.

When the electromagnetic coil is in power failure, electromagnetic force is not generated between the static iron core 3 and the movable iron core 4, under the action of the elasticity of the elastic piece 5 and the gravity of the movable iron core 4, the movable iron core 4 or a sealing block at the bottom of the movable iron core 4 can be abutted against the upper edge of the air outlet hole 12 of the valve body 1 to form sealing, at the moment, the electromagnetic valve is in a closed state that the air inlet hole 11 and the air outlet hole 12 are disconnected, air cannot flow out from the air outlet hole 12, and disconnection control of air flow is realized.

When the electromagnetic coil is electrified, the electromagnetic coil and the static iron core 3 form an electromagnet to generate electromagnetic force, the electromagnetic force between the static iron core 3 and the movable iron core 4 overcomes the internal and external pressure difference force of the air outlet hole 12 of the valve body 1, the movable iron core 4 or a sealing block at the bottom of the movable iron core 4 leaves the air outlet hole 12, at the moment, the air inlet hole 11 is communicated with the air outlet hole 12, the electromagnetic valve is in an open state, and air flow can flow out from the air outlet hole 12 of the valve body, so that the conduction control of the air flow is realized.

The elastic piece 5 is clamped between the iron core cover 2 and the stop part 41, so that the elastic piece 5 is arranged on the outer peripheral side of the movable iron core 4, the elastic piece 5 is prevented from being arranged between the static iron core 3 and the movable iron core 4, the relative magnetic attraction area between the static iron core 3 and the movable iron core 4 is ensured, the magnetic attraction between the static iron core 3 and the movable iron core 4 is enhanced, and the flexibility and the stability of the switch control of the electromagnetic valve are improved.

It will be appreciated that when the same magnetic attraction force is required between the stationary core 3 and the movable core 4, the current in the electromagnetic coil can be reduced due to the increase of the magnetic attraction area between the stationary core 3 and the movable core 4, thereby reducing the power consumption of the electromagnetic valve. The electromagnetic valve provided by the embodiment of the application has the advantages of simple structure, reliable sealing of switch control and low noise in the switching process of the electromagnetic valve.

In addition, the valve body 1 is a integrally formed rotary body structure, and when the core cover 2 and the valve body 1 are in sealing connection, gas leakage caused by process welding between the core cover 2 and the valve body 1 can be reduced.

The electromagnetic valve provided by the embodiment of the application comprises a valve body 1; an iron core cover 2, wherein the iron core cover 2 is fixed on the valve body 1; the static iron core 3 and the movable iron core 4, wherein the static iron core 3 is fixed at one end of the iron core cover 2 far away from the valve body 1, a movable cavity is formed between the static iron core 3 and the iron core cover 2 and the valve body 1, the movable iron core 4 is movably arranged in the movable cavity, and the movable iron core 4 is provided with a stop part 41; the elastic piece 5, the elastic piece 5 presss from both sides to be located the iron core cover 2 with between the portion of stopping 41, guaranteed the area is inhaled to relative magnetism between quiet iron core 3 and the iron core that moves 4, has strengthened the magnetism suction between quiet iron core 3 and the iron core that moves 4 has improved solenoid valve on-off control's flexibility and stability.

Alternatively, referring to fig. 6 to 8, the core cover 2 includes a first connecting section 21, a bending section 22, and a second connecting section 23 connected in sequence, the first connecting section 21 is fixed to the valve body 1, and the stationary core 3 is fixed to the second connecting section 23;

the elastic member 5 is sandwiched between the bending section 22 and the stopper 41.

Specifically, the second connecting section 23 has an inner diameter smaller than that of the first connecting section 21 to form a bent section 22 of an inwardly bent shoulder structure between the second connecting section 23 and the first connecting section 21; and at least a part of the bending section 22 is opposite to the stop portion 41 in the direction of the switch valve, so that the elastic member 5 can be clamped between the bending section 22 and the stop portion 41, so that the elastic member 5 can be compressed when the movable iron core 4 moves in the direction approaching to the static iron core 3.

In another embodiment, the core cover 2 may also have an inwardly protruding protrusion, and the elastic member 5 is sandwiched between the protrusion and the stop portion 41, so that the purpose of compressing the elastic member 5 when the movable core 4 moves in a direction approaching the stationary core 3 may be achieved.

Alternatively, referring to fig. 3 to 5, the outer circumference of the valve body 1 has a stepped surface 13, and the first connecting section 21 is in interference fit with the stepped surface 13.

Specifically, the step surface 13 includes a bonding surface along the direction of the switch valve and a limiting surface perpendicular to the direction of the switch valve, and the first connection section 21 is in interference fit on the bonding surface to ensure tightness between the core cover 2 and the valve body 1; the limiting surface can limit the sleeving position of the first connecting section 21, so that the position accuracy of the first connecting section 21 in interference sleeving on the step surface 13 is ensured.

Alternatively, referring to fig. 9 to 11, the stopper 41 is a boss provided on the outer peripheral side of the movable core 4, and the elastic member 5 is sandwiched between the core cover 2 and the boss.

Specifically, the boss may extend from the outer circumferential side of the movable iron core 4 toward the valve body 1 to form a space between the movable iron core 4 and the valve body 1 in which the elastic member 5 is disposed, one end of the elastic member 5 is abutted to the iron core cover 2, the other end of the elastic member 5 is abutted to the boss, and the elastic member 5 is in clearance fit with the movable iron core 4 and the valve body 1, so that when the movable iron core 4 moves in a direction approaching to the stationary iron core 3, on the one hand, the elastic member 5 can be compressed by the boss, and on the other hand, frictional interference between the movable iron core 4 and the valve body 1 and the elastic member 5 can be avoided.

In one embodiment, the boss may be an annular boss provided on the outer peripheral side of the movable iron core 4 to form a full support for the end of the elastic member 5; in another embodiment, a plurality of bosses arranged at intervals may be provided on the outer peripheral side of the movable iron core 4, and the plurality of bosses are located at the same height in the direction of the on-off valve, so as to support the elastic member 5 on the basis of reducing the weight of the movable iron core 4.

Alternatively, referring to fig. 1 and 2, the elastic member 5 is a spring, and the spring is sleeved on the movable iron core 4 and is in clearance fit with the movable iron core 4.

Specifically, the spring clip is disposed between the core cover 2 and the stop portion 41, and can apply an acting force between the movable core 4 and the core cover 2, so that an elastic member is prevented from being disposed between the movable core 4 and the stationary core 3, electromagnetic force between the movable core 4 and the stationary core 3 is maximized, and power consumption of the electromagnetic valve is reduced.

The spring is in clearance fit with the movable iron core 4, so that abrasion of the movable iron core 4 to the spring can be eliminated, and interference of the spring to the movable iron core 4 can be avoided. The valve body 1, the iron core cover 2 and the static iron core 3 form a movable cavity, the spring and the movable iron core 4 are arranged in the movable cavity and are in clearance fit, and the movable iron core 4 can realize compression or release of the spring when moving up and down along the direction of the switch valve.

In another embodiment, the elastic member 5 is a rubber sleeve, and the rubber sleeve is sleeved on the movable iron core 4 and is in clearance fit with the movable iron core 4, so that buffering of the action of the movable iron core 4 can be achieved.

Alternatively, referring to fig. 1 and 2, the stationary core 3 is opposite to the movable core 4, a first magnetic attraction plane is formed on a side of the stationary core 3 facing the movable core 4, and a second magnetic attraction plane is formed on a side of the movable core 4 facing the stationary core 3.

Specifically, the elastic piece 5 is clamped between the iron core cover 2 and the stop part 41, so that the elastic piece 5 can be arranged on the outer peripheral side of the movable iron core 4, the elastic piece 5 is prevented from being arranged between the static iron core 3 and the movable iron core 4, the magnetic attraction areas of the first magnetic attraction plane and the second magnetic attraction plane between the static iron core 3 and the movable iron core 4 are ensured, and the magnetic attraction force between the static iron core 3 and the movable iron core 4 is enhanced.

Optionally, referring to fig. 5, an air inlet hole 11 and an air outlet hole 12 are arranged on the valve body 1, and a flexible structure 6 is arranged on the movable iron core 4;

Under the condition that the static iron core 3 magnetically attracts the movable iron core 4, the movable iron core 4 and the flexible structure 6 are far away from the air outlet hole 12, and the air inlet hole 11 is communicated with the air outlet hole 12;

Under the condition that the static iron core 3 releases the magnetic attraction to the movable iron core 4, the movable iron core 4 and the flexible structure 6 are close to the air outlet hole 12, and the flexible structure 6 seals the air outlet hole 12.

Specifically, when the electromagnetic coil is powered off, that is, when the static iron core 3 releases the magnetic attraction to the movable iron core 4, there is no electromagnetic force between the static iron core 3 and the movable iron core 4, under the action of the elastic force of the elastic member 5 and the gravity of the movable iron core 4, the flexible structure 6 such as rubber or plastic at the bottom of the movable iron core 4 can tightly abut against the upper edge of the air outlet hole 12 of the valve body 1 to form a seal, at this time, the electromagnetic valve is in a closed state, the air flow cannot flow out from the air outlet hole 12, and a movable gap d1 is formed between the static iron core 3 and the movable iron core 4, as shown in fig. 1.

When the electromagnetic coil is electrified, that is, when the static iron core 3 magnetically attracts the movable iron core 4, the electromagnetic force between the static iron core 3 and the movable iron core 4 is larger than the internal and external pressure difference force of the air outlet hole 12 of the valve body 1, the flexible structure 6 at the bottom of the movable iron core 4 leaves the air outlet hole 12, the electromagnetic valve is in an open state, air flow can flow out from the air outlet hole 12 of the valve body, and a valve opening gap d2 is formed between the upper edge of the air outlet hole 12 and the movable iron core 4, as shown in fig. 2; when the static iron core 3 and the movable iron core 4 are magnetically attracted and attached, d2 is equal to d 1.

Because the flexible structure 6 has the characteristics of softer structure and deformation, when the electromagnetic coil loses electricity, the movable iron core 4 downwards drives the flexible structure 6 to be close to the air outlet hole 12 under the action of the elastic piece 5, and the flexible structure 6 contacts the upper edge of the air outlet hole 12 and does not generate noise when sealing the air outlet hole 12, so that the silence of the action of the electromagnetic valve is ensured.

Alternatively, referring to fig. 9, a side of the movable iron core 4 facing the air outlet hole 12 has an assembling groove 42, and the flexible structure 6 is embedded in the assembling groove 42.

Specifically, the assembling groove 42 has an opening facing the air outlet hole 12, and the flexible structure 6 can be exposed from the opening of the assembling groove 42 when being embedded in the assembling groove 42, so as to ensure the mute effect of the flexible structure 6 sealing the air outlet hole 12 on the basis of fixing and protecting the flexible structure 6 through the movable iron core 4.

Further, the flexible structure 6 is flush with the surface of the side of the movable iron core 4 facing the air outlet hole 12, that is, the edge of the flexible structure 6 parallel to the opening at the opening of the assembly slot 42, so as to ensure the integrity of the movable iron core 4 and the flexible structure 6 as a whole.

Alternatively, referring to fig. 3 and 4, the valve body 1 is provided with a plurality of air intake holes 11, and the plurality of air intake holes 11 are spaced apart from each other on the circumferential side of the valve body 1.

Specifically, the air outlet holes 12 are located at the middle position inside the valve body 1, and the air inlet holes 11 are distributed at intervals on the periphery of the valve body 1, so that when the electromagnetic valve is opened, air flows flowing into the air inlet holes 11 can flow out through the middle air outlet holes 12, and the stability and flow of air circulation in the electromagnetic valve are improved.

Optionally, the aperture of the air outlet hole 12 is in the range of 0.9-1.5mm.

Specifically, when the aperture of the air outlet hole 12 is smaller, the pressure difference between the inside and the outside of the air outlet hole 12 of the valve body 1, which needs to be overcome by the electromagnetic force between the static iron core 3 and the movable iron core 4, is lower, so that the structure of the electromagnetic valve can be simplified.

The embodiment of the application provides an air suspension system, which comprises the electromagnetic valve.

The electromagnetic valve can be used in an air suspension system to achieve the functions of communicating and cutting off air media in a circulation channel of the whole air suspension system, and particularly the movable iron core 4 moves up and down through the power supply and the power failure of the electromagnetic coil, so that the opening and closing of the electromagnetic valve are controlled, and the flexibility of air circulation control in the air suspension system is ensured.

The embodiment of the application also provides a vehicle, which comprises the air suspension system.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims (11)

1. A solenoid valve, comprising:

a valve body (1);

a core cover (2);

the static iron core (3) and the movable iron core (4), wherein the static iron core (3) is fixed at one end, far away from the valve body (1), of the iron core cover (2), a movable cavity is formed between the static iron core and the valve body (1), the movable iron core (4) is movably arranged in the movable cavity, and a stop part (41) is arranged on the movable iron core (4);

An elastic member (5);

the iron core cover (2) comprises a first connecting section (21), a bending section (22) and a second connecting section (23) which are sequentially connected, the first connecting section (21) is fixed on the valve body (1), and the static iron core (3) is fixed on the second connecting section (23);

The elastic piece (5) is clamped between the bending section (22) and the stop part (41) along the moving direction of the movable iron core (4).

2. The electromagnetic valve according to claim 1, characterized in that the outer circumference of the valve body (1) has a stepped surface (13), the first connecting section (21) being in interference fit with the stepped surface (13).

3. The electromagnetic valve according to claim 1, wherein the stopper portion (41) is a boss provided on an outer peripheral side of the movable iron core (4), and the elastic member (5) is interposed between the iron core cover (2) and the boss.

4. The electromagnetic valve according to claim 1, characterized in that the elastic member (5) is a spring, which is sleeved on the movable iron core (4) and is in clearance fit with the movable iron core (4).

5. The electromagnetic valve according to claim 1, characterized in that the stationary core (3) and the movable core (4) are opposite, a first magnetic attraction plane is formed on a side of the stationary core (3) facing the movable core (4), and a second magnetic attraction plane is formed on a side of the movable core (4) facing the stationary core (3).

6. The electromagnetic valve according to claim 1, characterized in that the valve body (1) is provided with an air inlet hole (11) and an air outlet hole (12), and the movable iron core (4) is provided with a flexible structure (6);

Under the condition that the static iron core (3) magnetically attracts the movable iron core (4), the movable iron core (4) and the flexible structure (6) are far away from the air outlet hole (12), and the air inlet hole (11) is communicated with the air outlet hole (12);

Under the condition that the static iron core (3) releases the magnetic attraction to the movable iron core (4), the movable iron core (4) and the flexible structure (6) are close to the air outlet hole (12), and the flexible structure (6) forms a seal for the air outlet hole (12).

7. The electromagnetic valve according to claim 6, characterized in that the side of the moving core (4) facing the air outlet hole (12) is provided with an assembling groove (42), and the flexible structure (6) is embedded in the assembling groove (42).

8. The electromagnetic valve according to claim 6, characterized in that the valve body (1) is provided with a plurality of air inlet holes (11), and the plurality of air inlet holes (11) are distributed at intervals on the periphery of the valve body (1).

9. A solenoid valve according to claim 6 characterised in that said outlet aperture (12) has a pore size in the range 0.9-1.5mm.

10. An air suspension system comprising a solenoid valve according to any one of claims 1-9.

11. A vehicle comprising the air suspension system of claim 10.