CN220168712U - Solenoid valve, solenoid valve subassembly and car - Google Patents

Abstract

The utility model discloses an electromagnetic valve, an electromagnetic valve assembly and an automobile, wherein the electromagnetic valve comprises a valve body, a valve core, a static iron core and a movable iron core, a valve cavity is defined in the valve body, an inlet and an outlet are formed in the valve body, the inlet is communicated with the valve cavity, a magnetic core installation cavity is formed in the valve body, the valve core is movably arranged in the valve cavity and used for closing the outlet to enable the outlet to be blocked from being communicated with the valve cavity, or opening the outlet to enable the outlet to be communicated with the valve cavity, the static iron core is fixedly arranged in the magnetic core installation cavity, the movable iron core is movably arranged in the magnetic core installation cavity to control movement of the valve core by utilizing electromagnetic force between the movable iron core and the static iron core, one of the static iron core and the movable iron core is provided with an arc convex surface, and the other of the static iron core and the movable iron core is provided with an arc concave surface matched with the arc convex surface.

Description

Solenoid valve, solenoid valve subassembly and car

Technical Field

The utility model relates to the technical field of electromagnetic valve structures, in particular to an electromagnetic valve, an electromagnetic valve assembly and an automobile.

Background

In the prior art, the control of fluid in a vehicle is generally controlled by on-off control of an electromagnetic valve, such as a control switch of refrigerant flow of an air conditioning system, but the existing electromagnetic valve is complex in structure, large in magnetic resistance, low in electromagnetic conversion rate, and incapable of reasonably utilizing electromagnetic force and power, so that waste of power consumption is caused, and when enough electromagnetic force is obtained, the volume and weight of a coil are required to be increased, so that cost is increased.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, one purpose of the utility model is to provide a solenoid valve, which has the advantages of large magnetic force between the movable iron core and the fixed iron core, small magnetic group, simple structure and low assembly cost.

According to the electromagnetic valve disclosed by the utility model, the electromagnetic valve comprises a valve body, a valve cavity is defined in the valve body, an inlet and an outlet are formed in the valve body, the inlet is communicated with the valve cavity, and a magnetic core mounting cavity is formed in the valve body; the valve core is movably arranged in the valve cavity and is used for closing the outlet to cut off the communication between the outlet and the valve cavity or opening the outlet to enable the outlet to be communicated with the valve cavity; the static iron core is at least partially fixedly arranged in the magnetic core mounting cavity; the movable iron core is movably arranged in the magnetic core mounting cavity so as to control the movement of the valve core by utilizing electromagnetic force between the movable iron core and the static iron core; one of the static iron core and the movable iron core is provided with an arc convex surface, and the other one is provided with an arc concave surface matched with the arc convex surface.

According to the utility model, one of the static iron core and the movable iron core is provided with the arc convex surface, and the other one is provided with the arc concave surface matched with the arc convex surface, namely, the static iron core and the movable iron core are designed to be matched through the arc convex surface and the arc concave surface, so that the magnetic attraction between the movable iron core and the static iron core can be greatly improved, the magnetic resistance is small, the electromagnetic conversion rate is high, the power consumption waste is small, the number of required coil turns is small, and the cost is low; through setting up the arc surface cooperation, processing cost is low, and the assembly is simple.

According to the electromagnetic valve provided by the utility model, one end of the static iron core, which faces the movable iron core, is provided with the arc convex surface, one end of the movable iron core, which faces the static iron core, is provided with the arc concave surface matched with the arc convex surface, or one end of the static iron core, which faces the movable iron core, is provided with the arc concave surface, and one end of the movable iron core, which faces the static iron core, is provided with the arc convex surface matched with the arc concave surface.

According to the electromagnetic valve provided by the utility model, the end face of the static iron core, which faces one end of the movable iron core, is an arc convex surface, the end face of the movable iron core, which faces one end of the static iron core, is an arc concave surface matched with the arc convex surface, or the end face of the static iron core, which faces one end of the movable iron core, is an arc concave surface, and the end face of the movable iron core, which faces one end of the static iron core, is an arc convex surface matched with the arc concave surface.

According to the electromagnetic valve provided by the utility model, the arc convex surface is a spherical surface, and the arc concave surface is a spherical concave surface.

According to the electromagnetic valve provided by the utility model, the valve core can move between the communicating position and the isolating position, and when the valve core is positioned at the communicating position, the valve core is separated from the outlet so as to enable the outlet to be communicated with the valve cavity; when the valve core is positioned at the isolating position, the valve core seals the outlet to isolate the communication between the outlet and the valve cavity.

According to the electromagnetic valve provided by the utility model, the valve body comprises a valve body and a valve seat, the valve body is provided with an opening end, the valve seat is connected with the opening end, the inlet is formed in the valve body, and the outlet is formed in the valve seat; a first elastic piece is arranged between the movable iron core and the static iron core, and the first elastic piece is abutted between the movable iron core and the static iron core along the moving direction of the movable iron core.

According to the electromagnetic valve provided by the utility model, the second elastic piece is arranged between the valve core and the valve seat, and the second elastic piece is abutted between the valve core and the valve seat along the moving direction of the valve core.

According to the electromagnetic valve provided by the utility model, one end of the valve body, which is far away from the valve seat, is provided with the sleeve part protruding outwards, the sleeve part is internally provided with the magnetic core mounting cavity, the static iron core is fixedly arranged at one end of the sleeve part, which is far away from the valve core, the movable iron core is slidably arranged in the sleeve part, one end of the first elastic piece is abutted with the movable iron core, and the other end of the first elastic piece is abutted with the static iron core.

According to the electromagnetic valve provided by the utility model, one end of the static iron core, which faces the movable iron core, is provided with the protruding cambered surface, and one end of the movable iron core, which is opposite to the static iron core, is provided with the concave cambered surface matched with the protruding cambered surface.

According to the electromagnetic valve provided by the utility model, the end face of the static iron core, which faces one end of the movable iron core, is a spherical surface, and the end face of the movable iron core, which is opposite to the static iron core, is a spherical concave surface matched with the spherical surface.

According to the electromagnetic valve provided by the utility model, one end of the static iron core, which faces the movable iron core, is provided with the first groove, one end of the movable iron core, which is opposite to the static iron core, is provided with the second groove, one end of the first elastic piece in the elastic force direction of the first elastic piece is abutted with the bottom wall of the first groove, and the other end of the first elastic piece is abutted with the bottom wall of the second groove.

According to the electromagnetic valve provided by the utility model, the sleeve structure protruding outwards is arranged at one end of the valve body far away from the valve seat, the sleeve structure is a magnetic part, the sleeve structure is configured into the static iron core, the iron core cover is fixedly connected with one end of the sleeve structure far away from the valve core, the sleeve structure and the iron core cover jointly enclose into the magnetic core mounting cavity, the movable iron core is slidably arranged in the magnetic core mounting cavity, and the first elastic part is arranged between the movable iron core and the sleeve structure.

According to the electromagnetic valve provided by the utility model, the valve body is a magnetic part, and the valve body and the sleeve structure are integrated into a whole.

According to the electromagnetic valve provided by the utility model, one end of the movable iron core, which faces the sleeve structure, is provided with the protruding cambered surface, and one end of the sleeve structure, which faces the movable iron core, is provided with the concave cambered surface matched with the protruding cambered surface.

According to the electromagnetic valve provided by the utility model, the protruding cambered surface is a spherical surface, and the concave cambered surface is a spherical concave surface.

According to the electromagnetic valve provided by the utility model, the end face of the movable iron core, which faces one end of the sleeve structure, consists of a spherical surface and a plane, and the spherical surface is arranged between the outer side face of the movable iron core and the plane; the sleeve structure is characterized in that one end facing the movable iron core is provided with a spherical concave surface matched with the spherical surface, and one end facing the movable iron core is also provided with a groove corresponding to the plane.

According to the electromagnetic valve provided by the utility model, the annular boss is arranged on the inner wall of the sleeve structure, the plane part of the movable iron core is connected with the push rod, and the push rod passes through the sleeve structure along the axial direction of the sleeve structure and is abutted with the valve core.

According to the electromagnetic valve provided by the utility model, one end of the push rod, which faces the movable iron core, is provided with the stop step, one end of the first elastic piece along the elastic force of the first elastic piece is abutted against the surface of the annular boss, which faces the movable iron body, and the other end of the first elastic piece is abutted against the step surface of the stop step, which faces one side of the valve core.

The utility model also provides an electromagnetic valve assembly, which comprises an electromagnetic valve and a coil, wherein the electromagnetic valve is provided by the utility model, and the coil is arranged on the outer periphery side of the electromagnetic valve.

The utility model also provides an automobile comprising the electromagnetic valve assembly.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic cross-sectional view of the overall structure of a solenoid valve according to embodiment 1 of the utility model.

Fig. 2 is a schematic cross-sectional view of a stationary core of a solenoid valve according to embodiment 1 of the utility model.

Fig. 3 is a perspective view of a stationary core of a solenoid valve according to embodiment 1 of the utility model.

Fig. 4 is a schematic cross-sectional view of a plunger of a solenoid valve according to embodiment 1 of the utility model.

Fig. 5 is a perspective view of the plunger of the solenoid valve according to embodiment 1 of the present utility model.

Fig. 6 is a schematic cross-sectional view of the overall structure of the solenoid valve according to embodiment 2 of the utility model.

Fig. 7 is a schematic cross-sectional view of the valve body and sleeve structure of the solenoid valve according to embodiment 2 of the utility model.

Fig. 8 is a perspective view of the valve body and sleeve structure of the solenoid valve according to embodiment 2 of the utility model.

Fig. 9 is a schematic cross-sectional view of a plunger of a solenoid valve according to embodiment 2 of the utility model.

Fig. 10 is a perspective view of a plunger of a solenoid valve according to embodiment 2 of the utility model.

Reference numerals:

1. a valve body; 11. a valve cavity; 12. an inlet; 13. an outlet; 14. a magnetic core mounting cavity; 111. a valve body; 112. a valve seat; 113. a sleeve portion; 114. a sleeve structure; 1141. an annular boss; 2. a valve core; 3. a stationary core; 31. a first groove; 4. a movable iron core; 41. a second groove; 32. an arc-shaped lug; 42. an arc-shaped concave surface; 5. a first elastic member; 6. a second elastic member; 7. an iron core cover; 8. a push rod; 81. the stop step.

Detailed Description

Embodiments of the present utility model will be described in detail below, by way of example with reference to the accompanying drawings, and solenoid valves according to the present utility model will be described below with reference to fig. 1 to 10.

As shown in fig. 1 and 6, the solenoid valve according to the embodiment of the first aspect of the present utility model includes: the valve comprises a valve body 1, wherein a valve cavity 11 is defined in the valve body, an inlet 12 and an outlet 13 are formed in the valve body, the inlet 12 is communicated with the valve cavity 11, and a magnetic core installation cavity 14 is formed in the valve body 1; a valve spool 2 movably provided in the valve chamber 11 for closing the outlet 13 such that the outlet 13 is blocked from communication with the valve chamber 11, or opening the outlet 13 such that the outlet 13 is communicated with the valve chamber 11; a stationary core 3, wherein the stationary core 3 is at least partially fixedly mounted in the magnetic core mounting cavity 14; a movable iron core 4, wherein the movable iron core 4 is movably arranged in the magnetic core mounting cavity 14 so as to control the movement of the valve core 2 by utilizing the magnetic attraction force between the movable iron core 4 and the static iron core 3; one of the static iron core 3 and the movable iron core 4 is provided with an arc convex surface, and the other is provided with an arc concave surface matched with the arc convex surface.

When the electromagnetic valve is electrified, the movable iron core 4 and the static iron core 3 are attracted through magnetic attraction, the movable iron core 4 moves towards the static iron core 3 under the action of the magnetic attraction and is attracted with the static iron core 3, at the moment, the static iron core 3 and the movable iron core 4 are completely matched through an arc-shaped surface convex surface and an arc-shaped concave surface, and the inventor researches in the design process find that when the static iron core 3 and the movable iron core 4 are magnetically attracted, the magnetic attraction is greatly improved, the power consumption waste is small, the required coil turns are few, the cost is low, the processing is simple, and the assembly cost is low.

According to one embodiment of the present utility model, the end of the stationary core 3 facing the movable core 4 has an arc convex surface 32, the end of the movable core 4 facing the stationary core 3 has an arc concave surface 42 that mates with the arc convex surface 32, or the end of the stationary core 3 facing the movable core 4 has an arc concave surface, and the end of the movable core 4 facing the stationary core 3 has an arc convex surface that mates with the arc concave surface.

According to one embodiment of the present utility model, as shown in fig. 1 to 5, the end face of the stationary core 3 facing the end of the movable core 4 is an arc convex surface, the end face of the movable core 4 facing the end of the stationary core 3 is an arc concave surface matching with the arc convex surface, or the end face of the stationary core 3 facing the end of the movable core 4 is an arc concave surface, and the end face of the movable core 4 facing the end of the stationary core 3 is an arc convex surface matching with the arc concave surface.

According to one embodiment of the utility model, the arcuate convex surface is a spherical surface and the arcuate concave surface is a spherical concave surface.

In the utility model, an arc convex surface or a spherical surface refers to an arc surface or a spherical surface which protrudes outwards from the movable iron core 4 or the static iron core 3 at one end of the movable iron core 4 or the static iron core 3, and an arc concave surface or a spherical concave surface refers to an arc surface or a spherical surface which protrudes inwards from the movable iron core 4 or the static iron core 3 at one end of the movable iron core 4 or the static iron core 3; the arc-shaped surface or the spherical surface in the utility model refers to a convex surface formed by outwards protruding the movable iron core 4 or the static iron core 3 or a concave surface formed by inwards recessing the movable iron core 4 or the static iron core 3, and the concave surface is a curved surface or a spherical surface.

According to the solenoid valve of the embodiment of the utility model, as shown in fig. 1 and 6, the solenoid valve is integrally structured in which the valve spool 2 is movable between the communication position and the blocking position, and when the valve spool 2 is located at the communication position, the valve spool 2 is separated from the outlet port 13 to communicate the outlet port 13 with the valve chamber 11; when the valve element 2 is in the blocking position, the valve element 2 blocks the outlet 13 to block the communication of the outlet 13 with the valve chamber 11.

According to the solenoid valve of the embodiment of the present utility model, as shown in fig. 1 and 6, the valve body 1 includes a valve body 111 and a valve seat 112, the valve body 111 having an open end to which the valve seat 112 is connected, the inlet 11 being formed on the valve body 111, and the outlet 12 being formed on the valve seat 112.

According to the solenoid valve of the embodiment of the utility model, the valve seat 112 and the valve body 111 may also be integrally formed.

According to the electromagnetic valve provided by the embodiment of the utility model, the first elastic piece 5 is arranged between the movable iron core 4 and the static iron core 3, and the first elastic piece 5 is abutted between the movable iron core 4 and the static iron core 3 along the moving direction of the movable iron core 4; a second elastic member 6 is provided between the valve body 3 and the valve seat 112, and the second elastic member 6 abuts between the valve body 3 and the valve seat 112 in the direction of movement of the valve body 3.

According to the electromagnetic valve of the embodiment of the utility model, one end of the valve body 111 away from the valve seat 112 is provided with the sleeve portion 113 protruding outwards, and the sleeve portion 113

According to the electromagnetic valve of the embodiment of the utility model, one end of the valve body 111 far away from the valve seat 112 is provided with the sleeve portion 113 protruding outwards, wherein the sleeve portion 113 and the valve body 111 are of an integrated structure, the static iron core 3 is fixedly arranged at one end of the sleeve portion 113 far away from the valve core 2, the movable iron core 4 is slidably arranged in the sleeve portion 113, one end of the first elastic piece 5 is abutted against the movable iron core 4, and the other end of the first elastic piece 5 is abutted against the static iron core 3.

According to the electromagnetic valve of the embodiment of the utility model, one end of the static iron core 3 facing the movable iron core 4 is provided with a convex cambered surface, and one end of the movable iron core 4 opposite to the static iron core 3 is provided with a concave cambered surface matched with the convex cambered surface.

According to the electromagnetic valve of the embodiment of the utility model, the end face of the static iron core 3 facing to the end of the movable iron core 4 is a spherical surface protruding outwards, and the end face of the end of the movable iron core 4 opposite to the static iron core 3 is a spherical concave surface matched with the spherical surface and concave inwards.

According to the electromagnetic valve of the embodiment of the utility model, one end of the static iron core 3 facing the movable iron core is provided with a first groove 31, one end of the movable iron core 4 opposite to the static iron core 3 is provided with a second groove 41, one end of the first elastic piece 5 along the elastic force direction of the first elastic piece is abutted with the groove bottom wall of the first groove 31, and the other end of the first elastic piece is abutted with the groove bottom wall of the second groove 41; namely, a first groove 31 is formed in the spherical surface of the static iron core, which protrudes outwards, a second groove is formed in the spherical concave surface of the movable iron core 4, the first elastic piece 5 is a spring, one end of the spring is abutted against the bottom wall of the first groove, and the other end of the spring is abutted against the bottom wall of the second groove.

According to the electromagnetic valve of one embodiment of the utility model, as shown in fig. 1, when the electromagnetic valve is powered off, no magnetic attraction force exists between the movable iron core 4 and the static iron core 3, the movable iron core 4 is abutted against the valve core 2 under the action of the first elastic piece 5, the elastic force of the first elastic piece 5 is larger than that of the second elastic piece 6, the valve core 2 is abutted against the outlet 13 under the action of the first elastic piece 5 to block the outlet 13 against the action of the second elastic piece 6, the communication between the outlet 13 and the valve cavity 11 is blocked, and the electromagnetic valve is in a normally closed state; when the electromagnetic valve is electrified, under the action of a coil measured on the periphery of the electromagnetic valve, magnetic attraction force is generated between the movable iron core 4 and the static iron core 3, under the action of the magnetic attraction force, the movable iron core 4 moves towards the static iron core 3 against the elastic force of the first elastic piece 5 and is attracted with the static iron core 3, and the first elastic piece 5 is compressed; the force of the movable iron core 4 abutting against the valve core 2 disappears, and the valve core 2 moves towards the direction away from the outlet 13 under the action of the elastic force of the second elastic piece 6 and opens the outlet 13; the outlet 13 communicates with the valve chamber 11 and the solenoid valve is opened.

According to another embodiment of the electromagnetic valve, as shown in fig. 6, an outwardly protruding sleeve structure 114 is disposed at an end of the valve body 111 away from the valve seat 112, wherein the sleeve structure 114 is a magnetic member, the sleeve structure 114 is configured as a static iron core 3, the iron core cover 7 is fixedly connected to an end of the sleeve structure 114 away from the valve core 2, the sleeve structure 114 and the iron core cover 7 together define a magnetic core mounting cavity 14, the movable iron core 4 is slidably disposed in the magnetic core mounting cavity 14, and the first elastic member 5 is disposed between the movable iron core 4 and the sleeve structure 114.

According to the embodiment of the present utility model, the valve body 111 is also a magnetic member, and the valve body 111 and the sleeve structure 114 are integrally formed, that is, the valve body 111 and the sleeve structure 114 are integrally formed as a magnetic member, and the integrally formed member formed by the valve body 111 and the sleeve structure 114 entirely forms the stator core 3.

According to the electromagnetic valve of the embodiment of the utility model, as shown in fig. 6-10, one end of the movable iron core 4 facing the sleeve structure 114 is provided with a convex cambered surface, and one end of the sleeve structure 114 facing the movable iron core 4 is provided with a concave cambered surface matched with the convex cambered surface.

According to the electromagnetic valve provided by the embodiment of the utility model, the protruding cambered surface is a spherical surface, and the concave cambered surface is a spherical concave surface.

According to the electromagnetic valve of the embodiment of the utility model, the end face of the movable iron core 4 facing one end of the sleeve structure 114 consists of a spherical surface and a plane, and the spherical surface is connected between the outer side face of the movable iron core and the plane; the end of the sleeve structure 114 facing the movable iron core 4 is provided with a spherical concave surface matched with the spherical surface, and the end of the sleeve structure 114 facing the movable iron core is also provided with a groove corresponding to the plane.

According to the electromagnetic valve of the embodiment of the utility model, the annular boss 1141 is arranged on the inner wall of the sleeve structure 114, the plane part of the movable iron core 4 is connected with the push rod 8, the push rod 8 passes through the sleeve structure 114 along the axial direction of the sleeve structure 114 and is in abutting joint with the valve core 2, one end of the push rod 8 facing the movable iron core 4 is provided with the stop step 81, one end of the first elastic piece 5 along the elastic force direction of the first elastic piece is in abutting joint with the surface of the annular boss 1141 facing the movable iron core 4, the other end of the first elastic piece 5 is in abutting joint with the step surface of the stop step 81 facing the valve core 2, one end of the spring is in abutting joint with the surface of the annular boss 1141 facing the movable iron core 4, and the other end of the spring is in abutting joint with the step surface of the stop step 81 facing the valve core 2.

According to the electromagnetic valve of the embodiment of the utility model, as shown in fig. 6, when the electromagnetic valve is not electrified, no magnetic attraction force acts between the movable iron core 4 and the static iron core 3 (the sleeve structure 114), the movable iron core 4 and the static iron core 3 (the sleeve structure 114) are separated under the elastic force of the first elastic piece 5, the valve core 2 is far away from the outlet 13 under the action of the second elastic piece 6 so that the outlet 13 is opened, the outlet 13 is communicated with the valve cavity 11, and the electromagnetic valve is in a normally open state; when the electromagnetic valve is electrified, a coil arranged on the outer periphery side of the electromagnetic valve is electrified, the movable iron core 4 moves towards the fixed iron core 3 (the sleeve structure 114) under the action of magnetic attraction force with the fixed iron core 3 (the sleeve structure 114), the movable iron core 4 is attracted with the fixed iron core 3 (the sleeve structure 114), one end of the push rod 8 is connected with the movable iron core, the other end of the push rod 8 is abutted with the valve core 2, when the movable iron core 8 is attracted with the fixed iron core 3 (the sleeve structure 114), the movable iron core 8 drives the valve core 2 to move towards the direction of the outlet 13 through the push rod 8 and close the outlet 13, the communication between the outlet 13 and the valve cavity 11 is cut off, and the electromagnetic valve is closed.

The utility model also provides an electromagnetic valve assembly, which comprises an electromagnetic valve and a coil, wherein the electromagnetic valve is provided by the utility model, and the coil is arranged on the outer peripheral side of the electromagnetic valve.

The utility model also provides an automobile comprising the electromagnetic valve assembly.

In the description of the present utility model, 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 utility model 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 utility model.

In the description of the utility model, a "first feature" or "second feature" may include one or more of such features. In the description of the present utility model, "plurality" means two or more. In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween. In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (21)

1. A solenoid valve, comprising:

the valve body is internally provided with a valve cavity, an inlet and an outlet are formed in the valve body, the inlet is communicated with the valve cavity, and a magnetic core mounting cavity is formed in the valve body;

the valve core is movably arranged in the valve cavity and is used for closing the outlet to cut off the communication between the outlet and the valve cavity or opening the outlet to enable the outlet to be communicated with the valve cavity;

the static iron core is at least partially fixedly arranged in the magnetic core mounting cavity;

the movable iron core is movably arranged in the magnetic core mounting cavity so as to control the movement of the valve core by utilizing electromagnetic force between the movable iron core and the static iron core;

one of the static iron core and the movable iron core is provided with an arc convex surface, and the other one is provided with an arc concave surface matched with the arc convex surface.

2. The solenoid valve of claim 1 wherein one end of said stationary core facing said movable core has an arcuate convex surface, one end of said movable core facing said stationary core has an arcuate concave surface mating with the arcuate convex surface, or one end of said stationary core facing said movable core has an arcuate concave surface, and one end of said movable core facing said stationary core has an arcuate convex surface mating with the arcuate concave surface.

3. The electromagnetic valve according to claim 2, wherein an end face of the stationary iron core facing the one end of the movable iron core is an arc convex face, an end face of the movable iron core facing the one end of the stationary iron core is an arc concave face matched with the arc convex face, or an end face of the stationary iron core facing the one end of the movable iron core is an arc concave face, and an end face of the movable iron core facing the one end of the stationary iron core is an arc convex face matched with the arc concave face.

4. A solenoid valve according to any one of claims 1 to 3 wherein said arcuate convex surface is a spherical surface and said arcuate concave surface is a spherical concave surface.

5. The solenoid valve of claim 1 wherein said spool is movable between a communication position and a blocking position, said spool being separated from said outlet port to communicate said outlet port with said valve chamber when said spool is in said communication position; when the valve core is positioned at the isolating position, the valve core seals the outlet to isolate the communication between the outlet and the valve cavity.

6. The solenoid valve of claim 5 wherein said valve body comprises a valve body having an open end and a valve seat attached to said open end, said inlet being formed in said body and said outlet being formed in said valve seat.

7. The electromagnetic valve according to claim 6, wherein a first elastic member is provided between the movable iron core and the stationary iron core, and the first elastic member abuts between the movable iron core and the stationary iron core in a moving direction of the movable iron core.

8. The solenoid valve of claim 6 wherein a second resilient member is disposed between said spool and said valve seat, said second resilient member abutting between said spool and said valve seat in a direction in which said spool moves.

9. The electromagnetic valve according to claim 7, wherein an end of the valve body away from the valve seat is provided with an outwardly protruding sleeve portion, the sleeve portion is internally configured as the magnetic core installation cavity, the stationary iron core is fixedly disposed at an end of the sleeve portion away from the valve core, the movable iron core is slidably disposed in the sleeve portion, one end of the first elastic member is abutted against the movable iron core, and the other end of the first elastic member is abutted against the stationary iron core.

10. The solenoid valve of claim 9 wherein an end of said stationary core facing said movable core has a convex arcuate surface and an end of said movable core opposite said stationary core has a concave arcuate surface mating with said convex arcuate surface.

11. The electromagnetic valve according to claim 10, wherein an end face of the stationary core facing the end of the movable core is a spherical face, and an end face of the movable core opposite to the stationary core is a spherical concave face that mates with the spherical face.

12. The electromagnetic valve according to claim 9, wherein an end of the stationary core facing the movable core has a first groove, an end of the movable core opposite to the stationary core has a second groove, and one end of the first elastic member in the elastic force direction thereof abuts against a bottom wall of the first groove, and the other end abuts against a bottom wall of the second groove.

13. The electromagnetic valve according to claim 7, wherein an outwardly protruding sleeve structure is provided at an end of the valve body away from the valve seat, the sleeve structure is a magnetic member, the sleeve structure is configured as the stationary core, an iron core cover is fixedly connected to an end of the sleeve structure away from the valve core, the sleeve structure and the iron core cover enclose the magnetic core installation cavity together, the movable core is slidably provided in the magnetic core installation cavity, and the first elastic member is provided between the movable core and the sleeve structure.

14. The solenoid valve of claim 13 wherein said valve body is a magnetic member and said valve body and said sleeve structure are integrally formed.

15. The solenoid valve of claim 13 wherein an end of said plunger facing said sleeve structure has a convex arcuate surface and an end of said sleeve structure facing said plunger has a concave arcuate surface that mates with said convex arcuate surface.

16. The solenoid valve of claim 15 wherein said convex arcuate surface is a spherical surface and said concave arcuate surface is a spherical concave surface.

17. The solenoid valve of claim 16 wherein an end face of said plunger toward one end of said sleeve structure is comprised of a spherical surface and a planar surface, said spherical surface being connected between an outer side face of said plunger and said planar surface; the sleeve structure is characterized in that one end facing the movable iron core is provided with a spherical concave surface matched with the spherical surface, and one end facing the movable iron core is also provided with a groove corresponding to the plane.

18. The solenoid valve of claim 13 wherein said sleeve structure has an annular boss disposed on an inner wall thereof, said plunger having a planar portion connected to a push rod extending axially through said sleeve structure and abutting said valve core.

19. The electromagnetic valve according to claim 18, wherein one end of the push rod facing the movable iron core has a stopper step, one end of the first elastic member along the elastic force thereof abuts against the movable iron body side surface of the annular boss, and the other end abuts against a step surface of the stopper step facing the valve core side.

20. A solenoid valve assembly comprising a solenoid valve according to any one of claims 1 to 17 and a coil provided on the outer peripheral side of the solenoid valve.

21. An automobile comprising the solenoid valve assembly of claim 20.