Waterproof structure and electromagnetic valve

Abstract

A waterproof structure and an electromagnetic valve. The waterproof structure comprises: a waterproof protrusion (40), which has an inner fitting face (41) facing an electrical connection area (30), wherein the waterproof protrusion (40) is arranged on an end face of an electromagnetic coil (10) and abuts against and fits with an end face of a junction box (20), or, the waterproof protrusion (40) is arranged on the end face of the junction box (20) and abuts against and fits with the end face of the electromagnetic coil (10); and a sealing member (50), which is located in the electrical connection area (30), wherein an outer peripheral face of the sealing member (50) is in limiting fit with the inner fitting face (41), and two correspondingly arranged end faces of the sealing member (50) respectively abut against and fit with the end face of the electromagnetic coil (10) and the end face of the junction box (20), so as to seal a gap.

Description

Waterproof structure and solenoid valve

[0001] This application claims priority to the patent application entitled “Waterproof Structure and Solenoid Valve” filed with the State Intellectual Property Office of China on August 11, 2023, with application number 202322171934.9. Technical Field

[0002] The present application relates to the technical field of solenoid valves, and in particular to a waterproof structure and a solenoid valve. Background Art

[0003] At present, existing solenoid valves usually include a plug-in electromagnetic coil and a junction box that are electrically connected to each other. Among them, the junction box plays the role of transition connection between the electromagnetic coil and the cable, and undertakes the circuit conduction function. To ensure the safety of the circuit, there are high requirements for the waterproof and dustproof performance between the electromagnetic coil and the junction box.

[0004] Currently, the common solenoid valves have poor sealing reliability at the connection between the electromagnetic coil and the junction box after assembly. The seal between the junction box and the end face of the electromagnetic coil is prone to failure, allowing moisture to penetrate and cause a short circuit, which can lead to safety accidents such as the burning of the electromagnetic coil.

[0005] In order to improve the waterproof and dustproof performance between the electromagnetic coil and the junction box, a sealing gasket is usually added between the junction box and the electromagnetic coil to achieve sealing. Since the mating surfaces between the junction box and the sealing gasket and the mating surfaces between the electromagnetic coil and the sealing gasket are both planar structures, the sealing between the two is only performed by the sealing gasket, and the sealing effect is poor.

[0006] Application Contents

[0007] The present application provides a waterproof structure and a solenoid valve to solve the problem of poor sealing between the electromagnetic coil and the junction box in the prior art.

[0008] In order to solve the above problems, according to one aspect of the present application, a waterproof structure is provided, which is used to seal the gap between the electromagnetic coil and the junction box. There is an electrical connection area between the electromagnetic coil and the junction box. The waterproof structure includes: a waterproof protrusion having an internal mating surface facing the electrical connection area; the waterproof protrusion is arranged on the end face of the electromagnetic coil and abuts and fits with the end face of the junction box; or, the waterproof protrusion is arranged on the end face of the junction box and abuts and fits with the end face of the electromagnetic coil; a sealing member is located in the electrical connection area; the outer peripheral surface of the sealing member is limitedly matched with the internal mating surface, and the two corresponding end faces of the sealing member abut and fit with the end face of the electromagnetic coil and the end face of the junction box respectively to seal the gap.

[0009] Furthermore, the waterproof protrusion is an annular protrusion, and the internal matching surface of the annular protrusion is an annular surface; the external size of the sealing element is matched with the size of the annular surface; and the sealing element is made of elastic material.

[0010] Furthermore, the annular protrusion is a rectangular protrusion, and the interior of the rectangular protrusion has an annular surface, which includes a first inner wall, a second inner wall, a third inner wall and a fourth inner wall connected end to end, the first inner wall and the third inner wall are arranged correspondingly, and the second inner wall and the fourth inner wall are arranged correspondingly; the sealing member is a rectangular member, and the four circumferential facades of the rectangular member are respectively abutted and matched with the first inner wall, the second inner wall, the third inner wall and the fourth inner wall.

[0011] Furthermore, the connection between the first inner wall and the second inner wall, the connection between the first inner wall and the fourth inner wall, the connection between the second inner wall and the second inner wall, and the connection between the second inner wall and the fourth inner wall are all rounded.

[0012] Optionally, the waterproof protrusion includes a horizontal protrusion and two vertical protrusions respectively arranged at both ends of the horizontal protrusion, and the horizontal protrusion and the two vertical protrusions form a U-shaped structure; the wall surface of the horizontal protrusion facing the electrical connection area is respectively connected to the wall surfaces of the two vertical protrusions facing the electrical connection area to form an internal mating surface.

[0013] Optionally, there are two waterproof protrusions; the two waterproof protrusions are correspondingly arranged on the end face of the electromagnetic coil; or, the two waterproof protrusions are correspondingly arranged on the end face of the junction box; or, one waterproof protrusion is arranged on the end face of the electromagnetic coil, and the other waterproof protrusion is arranged on the end face of the junction box, and the two waterproof protrusions are arranged correspondingly.

[0014] According to another aspect of the present application, a solenoid valve is provided. The solenoid valve includes a solenoid coil, a junction box, and the above-mentioned waterproof structure. The waterproof structure seals a gap between the solenoid coil and the junction box.

[0015] Furthermore, a waterproof protrusion is provided on the end face of the electromagnetic coil, the end face of the junction box has a matching protrusion, the waterproof protrusion has an external matching surface away from the internal matching surface, and the external matching surface is interference fit with the inner wall of the matching protrusion.

[0016] Furthermore, the solenoid valve also includes a conductive plug, which is fixedly arranged on the electromagnetic coil; both ends of the conductive plug are electrically connected to the electromagnetic coil and the junction box respectively; the sealing member has a through hole, and the conductive plug passes through the through hole.

[0017] Furthermore, the solenoid valve also includes a fixing member, both ends of which are respectively connected to the electromagnetic coil and the junction box to fix the electromagnetic coil and the junction box relative to each other; the sealing member is provided with a mounting through hole, and the fixing member passes through the mounting through hole.

[0018] By applying the technical solution of the present application, a waterproof structure is provided, which is used to seal the gap between the electromagnetic coil and the junction box. There is an electrical connection area between the electromagnetic coil and the junction box. The waterproof structure includes: a waterproof protrusion having an internal mating surface facing the electrical connection area; the waterproof protrusion is arranged on the end face of the electromagnetic coil and abuts and fits with the end face of the junction box; or, the waterproof protrusion is arranged on the end face of the junction box and abuts and fits with the end face of the electromagnetic coil; a sealing member is located in the electrical connection area; the outer peripheral surface of the sealing member is limitedly matched with the internal mating surface, and the two corresponding end faces of the sealing member abut and fit with the end face of the electromagnetic coil and the end face of the junction box respectively to seal the gap.

[0019] The present application effectively seals the gap between the electromagnetic coil and the junction box by arranging a waterproof protrusion and a sealing member, thereby improving the waterproof and dustproof performance between the electromagnetic coil and the junction box, and avoiding the occurrence of safety accidents such as short circuit due to moisture infiltration, which may lead to burning of the electromagnetic coil; compared with the existing junction box and sealing gasket matching surfaces and the electromagnetic coil and sealing gasket matching surfaces, which are both planar structures and are only sealed by the sealing gasket, the present application further enhances the sealing of the electrical connection area and further improves the waterproof performance by combining three sealing methods: the outer peripheral surface of the seal and the internal matching surface are limitedly matched, the two end faces of the seal are respectively abutted against the end face of the electromagnetic coil and the end face of the junction box, and the waterproof protrusion is abutted. The present application has a simple structure, good sealing effect in actual use, and is suitable for promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings that constitute part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0021] FIG1 shows a full cross-sectional view of a partial structure of a solenoid valve provided in an embodiment of the present application from a main viewing angle;

[0022] FIG2 shows an external schematic diagram of a partial structure of a solenoid valve provided in an embodiment of the present application;

[0023] FIG3 shows a full cross-sectional view of a partial structure of a solenoid valve provided in an embodiment of the present application from a top view;

[0024] FIG4 is a schematic diagram showing a partial structure of an electromagnetic coil and a waterproof protrusion provided in an embodiment of the present application;

[0025] FIG5 is a schematic diagram showing a specific structure of a sealing member provided in an embodiment of the present application;

[0026] FIG6 is a schematic diagram showing a partial structure of the waterproof protrusion and the sealing member provided in an embodiment of the present application after being assembled with the electromagnetic coil;

[0027] FIG7 shows a partially enlarged schematic diagram of the positions of the waterproof protrusion and the sealing element provided in an embodiment of the present application.

[0028] Among them, the above-mentioned drawings include the following figure marks: 10, electromagnetic coil; 20, junction box; 21, mating protrusion; 30, electrical connection area; 40, waterproof protrusion; 41, internal mating surface; 411, first inner wall; 412, second inner wall; 413, third inner wall; 414, fourth inner wall; 42, external mating surface; 50, seal; 51, through hole; 52, mounting through hole; 60, conductive plug; 70, fixing part. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0030] As shown in Figures 1 to 7, an embodiment of the present application provides a waterproof structure, which is used to seal the gap between the electromagnetic coil 10 and the junction box 20. There is an electrical connection area 30 between the electromagnetic coil 10 and the junction box 20, and the waterproof structure includes a waterproof protrusion 40 and a sealing member 50; the waterproof protrusion 40 has an internal mating surface 41 facing the electrical connection area 30 (as shown in Figure 7); the waterproof protrusion 40 is arranged on the end face of the electromagnetic coil 10 and abuts and fits with the end face of the junction box 20; or, the waterproof protrusion 40 is arranged on the end face of the junction box 20 and abuts and fits with the end face of the electromagnetic coil 10; the sealing member 50 is located in the electrical connection area 30 (for example: arranged around the electrical connection area 30); the outer peripheral surface of the sealing member 50 is limitedly matched with the internal mating surface 41, and the two corresponding end faces of the sealing member 50 abut and fit with the end face of the electromagnetic coil 10 and the end face of the junction box 20 respectively to seal the gap.

[0031] The present application effectively seals the gap between the electromagnetic coil 10 and the junction box 20 by providing a waterproof protrusion 40 and a sealing member 50, thereby improving the waterproof and dustproof performance between the electromagnetic coil 10 and the junction box 20, and avoiding the occurrence of safety accidents such as short circuit due to moisture infiltration, which may cause the electromagnetic coil 10 to burn out. Compared with the existing junction box 20 and the sealing gasket mating surface and the electromagnetic coil 10 and the sealing gasket mating surface, which are both planar structures and are only sealed by the sealing gasket, the present application further enhances the sealing of the electrical connection area 30 and further improves the waterproof performance by combining three sealing methods: the outer peripheral surface of the sealing member 50 is limitedly matched with the internal mating surface 41, the two end faces of the sealing member 50 are respectively abutted against the end face of the electromagnetic coil 10 and the end face of the junction box 20, and the waterproof protrusion 40. The present application has a simple structure, good sealing effect in actual use, and is suitable for promotion and use.

[0032] In a specific embodiment of the present application, the waterproof protrusion 40 can be provided only on the end surface of the electromagnetic coil 10 or the end surface of the junction box 20, and the waterproof protrusion 40 can be provided only on one side of the electrical connection area 30. Specifically, the waterproof protrusion 40 is provided on the path of moisture infiltration into the electrical connection area 30 to prevent external moisture and foreign matter such as dust from entering the electrical connection area 30. For example, if moisture infiltrates into the electrical connection area 30 from above the electrical connection area 30, the waterproof protrusion 40 is provided above the electrical connection area 30.

[0033] In addition, it is worth noting that in another specific embodiment of the present application, the electrical connection area 30 is an area formed by the end face of the electromagnetic coil 10 and the end face of the junction box 20 (for example, a spatial cube structure area is formed, the boundary of this area includes six planes, the end face of the electromagnetic coil 10 and the end face of the junction box 20 are two corresponding planes, and the remaining four planes form a gap, which needs to be sealed by the seal 50). Various electrical connection devices required for solenoid valves (for example, conductive plugs 60) can pass through this area. The seal 50 is arranged in the electrical connection area 30 and is surrounded by the outside of the electrical connection area 30 (for example, surrounded by the outside of the remaining four planes of the above-mentioned spatial cube structure) to prevent external moisture, dust and other foreign matter from entering the electrical connection area 30.

[0034] As shown in Figures 4 and 6, the waterproof protrusion 40 is an annular protrusion, and the inner mating surface 41 of the annular protrusion is an annular surface. By setting the waterproof protrusion 40 as an annular protrusion, a surrounding seal for the electrical connection area 30 is guaranteed.

[0035] It should be noted that: in a specific embodiment of the present application, the cross-section of the annular protrusion (for example, an annular surface) can be a closed graphic surface such as a rectangular ring, a square ring, a diamond ring, an elliptical ring, or a circular ring. The cross-sectional shape of the annular protrusion can be flexibly set according to actual usage needs and processing requirements.

[0036] Specifically, the outer dimensions of the seal 50 match those of the annular surface, and the seal 50 is made of an elastic material. This configuration allows the seal 50 to tightly fit the annular surface, the end face of the electromagnetic coil 10, and the end face of the junction box 20, further ensuring a good sealing effect.

[0037] As shown in Figures 4 and 6, the annular protrusion is a rectangular parallelepiped protrusion with an annular surface inside. The annular surface includes a first inner wall 411, a second inner wall 412, a third inner wall 413, and a fourth inner wall 414 connected end to end. The first inner wall 411 and the third inner wall 413 are arranged correspondingly, and the second inner wall 412 and the fourth inner wall 414 are arranged correspondingly. The sealing member 50 is a rectangular parallelepiped member, and the four circumferential facades of the rectangular parallelepiped member are respectively abutted and matched with the first inner wall 411, the second inner wall 412, the third inner wall 413, and the fourth inner wall 414. This arrangement ensures that the annular protrusion and the sealing member 50 are structurally simplified, facilitating subsequent processing and molding, and also ensures that the sealing effect meets actual usage requirements.

[0038] Optionally, in a specific embodiment of the present application, the height of the waterproof protrusion 40 is in the range of 1-2 mm.

[0039] As shown in Figures 4, 5, and 6, the corners of the first inner wall 411 and the second inner wall 412, the corners of the first inner wall 411 and the fourth inner wall 414, the corners of the second inner wall 412 and the fourth inner wall 414 are all rounded. This rounding not only facilitates the reliable installation of the seal 50, but also avoids stress concentration at the corners due to the sharp corners, which in turn reduces the service life of the rectangular protrusion. As shown in Figure 5, the four corners of the seal 50 are also rounded accordingly, and the chamfer dimensions are the same as those of the joints.

[0040] Alternatively, in another embodiment (not shown) of the present application, waterproof protrusion 40 comprises a horizontal protrusion and two vertical protrusions, one at each end of the horizontal protrusion, forming a U-shaped structure. The wall surface of the horizontal protrusion facing the electrical connection area 30 is connected to the wall surfaces of the two vertical protrusions facing the electrical connection area 30, forming internal mating surfaces 41. This arrangement, compared to the aforementioned annular protrusion solution, further simplifies the structure of waterproof protrusion 40. Of course, the sealing performance of the U-shaped structure may not be as good as that of the annular protrusion, so the choice can be flexible based on actual usage requirements.

[0041] Optionally, the extending direction of the horizontal protrusion is perpendicular to the extending direction of the vertical protrusion.

[0042] Optionally, there are two waterproof protrusions 40; the two waterproof protrusions 40 are correspondingly provided on the end surface of the electromagnetic coil 10; or the two waterproof protrusions 40 are correspondingly provided on the end surface of the junction box 20; or one waterproof protrusion 40 is provided on the end surface of the electromagnetic coil 10 and the other waterproof protrusion 40 is provided on the end surface of the junction box 20, and the two waterproof protrusions 40 are provided in a corresponding manner. By providing two U-shaped structures working in conjunction, the sealing effect of the electrical connection area 30 is further ensured.

[0043] It should be noted that the corresponding arrangement of the two waterproof protrusions 40 mentioned above means that the two waterproof protrusions 40 are staggered in space (that is, the two waterproof protrusions 40 are not arranged opposite each other, and after connection, the end faces of the two waterproof protrusions 40 do not fit together); for example, both waterproof protrusions adopt a U-shaped structure. When the electromagnetic coil 10 and the junction box 20 are connected, the openings of the two U-shaped structures are opposite to each other and are not stacked, forming an O-shaped structure as a whole to ensure sealing.

[0044] As shown in Figures 1, 2, and 3, the present application further provides a solenoid valve, which includes a solenoid coil 10, a junction box 20, and the aforementioned waterproof structure, which seals the gap between the solenoid coil 10 and the junction box 20. The solenoid valve thus configured has a simple structure and reliable operation, effectively preventing safety accidents such as short circuits caused by moisture infiltration, which could result in the burning of the solenoid coil 10.

[0045] As shown in Figures 1, 3, 4, 6, and 7, a waterproof protrusion 40 is provided on the end face of the electromagnetic coil 10. The end face of the junction box 20 has a mating protrusion 21. The waterproof protrusion 40 has an external mating surface 42 that faces away from the internal mating surface 41. The external mating surface 42 has an interference fit with the inner wall of the mating protrusion 21. The provision of the mating protrusion 21 allows the waterproof protrusion 40 to be reliably positioned, facilitating the centering and insertion of the electromagnetic coil 10 and the junction box 20 and further enhancing the sealing effect of the electrical connection area 30. The provision of the external mating surface 42 having an interference fit with the inner wall of the mating protrusion 21 ensures the connection strength between the mating protrusion 21 and the waterproof protrusion 40, further preventing water or dust from entering the electrical connection area 30 through the gap between the mating protrusion 21 and the waterproof protrusion 40.

[0046] Optionally, in another embodiment of the present application not shown, the matching protrusion 21 on the end surface of the junction box 20 and the waterproof protrusion 40 on the end surface of the electromagnetic coil 10 can be integrally formed by injection molding to facilitate processing.

[0047] As shown in Figures 1, 3, and 6, the solenoid valve further includes a conductive insert 60, which is fixedly mounted on the electromagnetic coil 10. The ends of the conductive insert 60 are electrically connected to the electromagnetic coil 10 and the junction box 20, respectively. The seal 50 has a through-hole 51 through which the conductive insert 60 passes. The through-hole 51 is provided to cooperate with the conductive insert 60 (e.g., a sealed fit or a clearance fit), thereby ensuring the operational reliability of the conductive insert 60.

[0048] As shown in Figures 1, 3, and 6, in one embodiment of the present application, there are three conductive inserts 60. The sealing member 50 has three through-holes 51, each of which has a size that matches the size of the corresponding conductive insert 60. After installation, the junction box 20 squeezes at least the area surrounding the through-holes 51 on the sealing member 50 to improve the sealing effect.

[0049] As shown in Figures 1, 3, and 6, the solenoid valve further includes a fixing member 70, the ends of which are connected to the electromagnetic coil 10 and the junction box 20, respectively, to fix the electromagnetic coil 10 and the junction box 20 relative to each other. The sealing member 50 has a mounting hole 52, through which the fixing member 70 passes. The mounting hole 52 is provided to cooperate with the fixing member 70 (for example, a sealing fit or a clearance fit), thereby ensuring the reliability of the fixing member 70.

[0050] In summary, the present application provides a waterproof structure and a solenoid valve. The present application effectively seals the gap between the electromagnetic coil 10 and the junction box 20 by setting a waterproof protrusion 40 and a sealing member 50, thereby improving the waterproof and dustproof performance between the electromagnetic coil 10 and the junction box 20, and avoiding the occurrence of safety accidents such as short circuit caused by moisture infiltration, which may cause the electromagnetic coil 10 to burn out. Compared with the existing junction box 20 and the sealing gasket mating surface and the electromagnetic coil 10 and the sealing gasket mating surface, which are both planar structures and are only sealed by the sealing gasket, the present application further enhances the sealing of the electrical connection area 30 and further improves the waterproof performance by combining three sealing methods: the outer peripheral surface of the sealing member 50 is limitedly matched with the internal mating surface 41, the two end faces of the sealing member 50 are respectively abutted with the end face of the electromagnetic coil 10 and the end face of the junction box 20, and the waterproof protrusion 40. The present application has a simple structure, good sealing effect in actual use, and is suitable for promotion and use.

[0051] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A waterproof structure, characterized in that: The waterproof structure is used to seal a gap between the electromagnetic coil (10) and the junction box (20), an electrical connection area (30) is provided between the electromagnetic coil (10) and the junction box (20), and the waterproof structure comprises: A waterproof protrusion (40) having an inner mating surface (41) facing the electrical connection area (30); the waterproof protrusion (40) is arranged on the end surface of the electromagnetic coil (10) and abuts against the end surface of the junction box (20); or the waterproof protrusion (40) is arranged on the end surface of the junction box (20) and abuts against the end surface of the electromagnetic coil (10); A sealing member (50) is located in the electrical connection area (30); the outer peripheral surface of the sealing member (50) is limitedly matched with the internal matching surface (41), and the two corresponding end surfaces of the sealing member (50) are respectively abutted against the end surface of the electromagnetic coil (10) and the end surface of the junction box (20) to seal the gap.

2. The waterproof structure according to claim 1, characterized in that: The waterproof protrusion (40) is an annular protrusion, and the internal matching surface (41) of the annular protrusion is an annular surface; the external dimensions of the sealing element (50) are matched to the dimensions of the annular surface; and the sealing element (50) is made of elastic material.

3. The waterproof structure according to claim 2, characterized in that: The annular protrusion is a rectangular protrusion, and the interior of the rectangular protrusion has the annular surface, and the annular surface includes a first inner wall (411), a second inner wall (412), a third inner wall (413) and a fourth inner wall (414) connected end to end, the first inner wall (411) and the third inner wall (413) are arranged correspondingly, and the second inner wall (412) and the fourth inner wall (414) are arranged correspondingly; the sealing member (50) is a rectangular member, and the four circumferential facades of the rectangular member are respectively abutted and matched with the first inner wall (411), the second inner wall (412), the third inner wall (413) and the fourth inner wall (414).

4. The waterproof structure according to claim 3, characterized in that: The connection between the first inner wall (411) and the second inner wall (412), the connection between the first inner wall (411) and the fourth inner wall (414), the connection between the second inner wall (412) and the second inner wall (412), and the connection between the second inner wall (412) and the fourth inner wall (414) are all chamfered.

5. The waterproof structure according to claim 1, characterized in that: The waterproof protrusion (40) comprises a horizontal protrusion and two vertical protrusions respectively arranged at both ends of the horizontal protrusion, and the horizontal protrusion and the two vertical protrusions form a U-shaped structure; the wall surface of the horizontal protrusion facing the electrical connection area (30) is respectively connected to the wall surfaces of the two vertical protrusions facing the electrical connection area (30) to form the internal matching surface (41).

6. The waterproof structure according to claim 1, characterized in that: There are two waterproof protrusions (40); the two waterproof protrusions (40) are correspondingly arranged on the end surface of the electromagnetic coil (10); or, the two waterproof protrusions (40) are correspondingly arranged on the end surface of the junction box (20); or, one waterproof protrusion (40) is arranged on the end surface of the electromagnetic coil (10), and the other waterproof protrusion (40) is arranged on the end surface of the junction box (20), and the two waterproof protrusions (40) are arranged correspondingly.

7. A solenoid valve, characterized in that: The solenoid valve comprises a solenoid coil (10), a junction box (20), and a waterproof structure according to any one of claims 1 to 6, wherein the waterproof structure seals a gap between the solenoid coil (10) and the junction box (20).

8. The solenoid valve according to claim 7, characterized in that: The waterproof protrusion (40) is arranged on the end face of the electromagnetic coil (10), the end face of the junction box (20) has a matching protrusion (21), the waterproof protrusion (40) has an external matching surface (42) facing away from the internal matching surface (41), and the external matching surface (42) is interference-fitted with the inner wall of the matching protrusion (21).

9. The solenoid valve according to claim 8, characterized in that: The solenoid valve further comprises a conductive plug (60), wherein the conductive plug (60) is fixedly arranged on the electromagnetic coil (10); two ends of the conductive plug (60) are electrically connected to the electromagnetic coil (10) and the junction box (20) respectively; and the sealing member (50) has a through hole (51), and the conductive plug (60) passes through the through hole (51).

10. The solenoid valve according to claim 8, characterized in that: The solenoid valve further comprises a fixing member (70), two ends of which are respectively connected to the electromagnetic coil (10) and the junction box (20) so as to relatively fix the electromagnetic coil (10) and the junction box (20); the sealing member (50) is provided with a mounting through hole (52), and the fixing member (70) passes through the mounting through hole (52).

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