CN213451986U

CN213451986U - Electromagnetic valve

Info

Publication number: CN213451986U
Application number: CN202021344990.8U
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhejiang Sanhua Automotive Components Co Ltd
Current assignee: Zhejiang Sanhua Automotive Components Co Ltd
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2021-06-15
Anticipated expiration: 2030-07-09

Abstract

A solenoid valve comprises a valve body, a coil assembly and a magnetizer, wherein at least part of the magnetizer is positioned between the coil assembly and the valve body; the electromagnetic valve comprises a locking piece, and the locking piece is connected with the magnetizer and the valve body; the coil assembly comprises a first concave part, the first concave part forms a first opening on the lower wall of the coil assembly, the first concave part forms a second opening on the side wall of the coil assembly, and the first opening faces to the upper wall of the magnetizer; the solenoid valve has and holds the chamber, holds the region that the chamber includes between first concave part and the magnetizer, and coil pack and magnetizer have two at least relative mounted position, and wherein at least one relative mounted position, the spacing tip of locking piece are located and hold the chamber, are favorable to reducing the solenoid valve volume, realize that the solenoid valve is miniaturized.

Description

Electromagnetic valve

Technical Field

The utility model relates to a fluid control field, in particular to solenoid valve.

Background

In the field of fluid control, an electromagnetic valve is used as a control part for controlling the conduction of a flow path, the electromagnetic valve comprises a valve body, a coil assembly and a magnetizer, the coil assembly and the magnetizer are relatively fixed, and the magnetizer is fixed on the valve body through an external part, so that the technical problem to be solved is how to reduce the volume of the electromagnetic valve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a save inner space's solenoid valve realizes the miniaturization of solenoid valve.

A solenoid valve comprising a valve body, a coil assembly and a magnetizer, at least a portion of the magnetizer being located between the coil assembly and the valve body; the electromagnetic valve comprises a locking piece, and the locking piece is connected with the magnetizer and the valve body; the coil assembly comprises a first recess, the first recess forms a first opening on the lower wall of the coil assembly, the first recess forms a second opening on the side wall of the coil assembly, and the first opening faces the upper wall of the magnetizer; the solenoid valve has and holds the chamber, hold the chamber including first concave part with the region between the magnetizer, coil pack with the magnetizer has two at least relative mounting position, and wherein at least one relative mounting position, the spacing tip of locking piece is located hold the chamber.

The utility model discloses an embodiment discloses an electromagnetic valve includes the locking piece and holds the chamber, and the magnetizer passes through the locking piece and is connected with the valve body, and the spacing tip of locking piece can be received and put in holding the chamber, realizes saving of solenoid valve inner space, has reduced the volume of solenoid valve, is favorable to the miniaturization of solenoid valve.

Drawings

Fig. 1 is a schematic perspective view of a solenoid valve according to an embodiment of the present invention;

fig. 2 is a schematic sectional view of a solenoid valve according to an embodiment of the present invention;

FIG. 3 is a perspective view of a first embodiment of a coil assembly;

fig. 4 is a schematic perspective view of the first embodiment of the magnetic conductor;

FIG. 5 is a schematic perspective view of one embodiment of a coil assembly engaged with a magnetic conductor;

FIG. 6 is a schematic perspective view of one embodiment of a magnetic conductor engaged with a valve body;

FIG. 7 is a schematic perspective view of one embodiment of a locking element engaged with a receiving cavity;

FIG. 8 is a perspective view of two ways of mating the coil assembly with the magnetizer;

fig. 9 is a perspective view of a second embodiment of a coil assembly.

Detailed Description

The invention will be further explained with reference to the drawings and the detailed description below:

in the following description of the embodiments, terms indicating directions (for example, "upper" and "lower") are used as appropriate for ease of understanding, and it is defined that the solenoid valve in fig. 2 is, for example, such that the coil block is located above the valve body, the valve body is located below the coil block, and the axial direction of the solenoid valve is the vertical direction.

With reference to fig. 1 and fig. 2, the solenoid valve 100 includes a valve body 1, a valve assembly 2, an iron core assembly 3, a coil assembly 4, and a magnetizer 5, wherein at least a portion of the valve assembly 2 is located in an inner cavity of the valve body 1, at least a portion of the iron core assembly 3 is located above the valve assembly 2, at least a portion of the iron core assembly 3 is located at an inner periphery of the coil assembly 4, the coil assembly 4 is relatively limited with the magnetizer 5, and the coil assembly 4 and the magnetizer 5 are sleeved at outer peripheries of the portion of the valve assembly 2 and the portion of; magnetizer 5 surrounds part of coil assembly 4, and along solenoid valve 100's axial, at least part magnetizer 5 is located between coil assembly 4 and valve body 1, and solenoid valve 100 still includes locking piece 7, and locking piece 7 connects magnetizer 5 and valve body 1.

The valve assembly 2 includes a valve seat 21, a valve body 22, and a suction portion 23, the suction portion 23 is located above the valve seat 21, in the present embodiment, the suction portion 23 is provided integrally with the valve seat 21, in other embodiments, the suction portion 23 and the valve seat 21 may be provided separately, and then fixed by welding, bonding, or screwing; the valve body 1 has a bore 14 for receiving at least part of the valve seat 21, the valve seat 21 being fixed relative to the valve body 1 by welding or screwing, in this embodiment the valve seat 21 is screwed to the valve body 1. The solenoid valve 100 further has a valve chamber 211, the valve chamber 211 is located between the valve body 1 and the valve seat 21, and the valve core 22 is located in the valve chamber 211 and can move in the axial direction of the valve assembly 2 in the valve chamber 211. The solenoid valve 100 further comprises a sleeve 6, one end of the sleeve 6 is fixedly connected with the valve assembly 2 and sealed at the connection, specifically, the inner wall of the sleeve 6 is fixed with the outer wall of the suction portion 23, and the fixing mode can be welding or bonding. The iron core assembly 3 comprises a movable iron core 31 and a valve rod 32, the movable iron core 31 is positioned above the suction part 23 and in the inner cavity of the sleeve 6 along the axial direction of the iron core assembly 3, one end of the valve rod 32 is fixedly connected with the movable iron core 31, and the other end of the valve rod 32 can be contacted with the valve core 22; the movable iron core 31 can move along the axial direction of the iron core assembly 3 in the sleeve 6, and then the movable iron core 31 can drive the valve rod 32 to move along the axial direction of the iron core assembly 3, so that the valve rod 32 is contacted with or separated from the valve core 22.

With reference to fig. 2, both the coil assembly 4 and the magnetizer 5 are provided with through holes, specifically, as shown in fig. 3, the coil assembly 4 has a first through hole 404, as shown in fig. 4, the magnetizer 5 has a second through hole 505, along the axial direction of the sleeve 6, the first through hole 404 penetrates through the upper and lower surfaces of the coil assembly 4, the second through hole 505 penetrates through the upper and lower surfaces of the magnetizer 5, and the axes of the first through hole 404 and the second through hole 505 coincide, or the first through hole 404 and the second through hole 505 are coaxially disposed; part of the sleeve 6 is located in the first 404 and second 505 through holes. The valve body 1 is formed with a first passage 11, a second passage 12, and a valve port 13, the first passage 11 is communicated with the valve chamber 211, the valve port 13 is communicated with the second passage 12, the working medium can enter the valve chamber 211 from the first passage 11, and then, when the valve core 22 leaves the valve port 13, the working medium enters the second passage 12 through the valve port 13. When the electromagnetic valve 100 is powered on or powered off, the movable iron core 31 can drive the valve rod 32 to move along the axial direction of the iron core assembly 3, and the valve rod 32 drives the valve core 22 to move in the valve cavity 211 along the up-down direction of the valve assembly 2, so as to open or close the valve port 13, so that the electromagnetic valve 100 is opened or closed.

With reference to fig. 3, 4, 5 and 6, the coil assembly 4 includes a main body portion 41, a connecting portion 42 and a connecting portion 43, the coil winding of the coil assembly 4 is located on the main body portion 41, the connecting portion 42 and the connecting portion 43 are integrated, for example, the main body portion 41, the connecting portion 42 and the connecting portion 43 may be injection molded as a whole, the connecting portion 43 is protruded relative to a sidewall of the connecting portion 42, specifically, the connecting portion 42 includes a first sidewall 421 and a second sidewall 422, where the first sidewall 421 intersects with the second sidewall 422; the first through hole 404 is formed in the main body 41, the first through hole 404 has openings on both the upper and lower surfaces of the main body 41, and the lower wall of the main body 41 is closer to the valve body 1 than the first side wall 421 and the second side wall 422 along the axial direction of the first through hole 404; the connecting port portion 43 protrudes relative to the first sidewall 421. The magnetizer 5 comprises a first plate body 501, a second plate body 502 and a third plate body 503, wherein the first plate body 501, the second plate body 502 and the third plate body 503 are integrally formed or welded into a whole; the first plate body 501 and the second plate body 502 are arranged in parallel or approximately in parallel, the third plate body 503 is arranged perpendicular to or approximately perpendicular to the first plate body 501 and the second plate body 502, the third plate body 503 is located between the first plate body 501 and the second plate body 502 along the axial direction of the electromagnetic valve 100, the first plate body 501 is located below the second plate body 502, or the first plate body 501 is closer to the valve body 1 than the second plate body 502, and the third plate body 503 is connected with the first plate body 501 and the second plate body 502; the second through hole 505 is specifically formed in the first plate body 501 and the second plate body 502, and the second through hole 505 has openings in both the upper and lower surfaces of the first plate body 501 and the upper and lower surfaces of the second plate body 502. Along the axial direction of first through-hole 404, at least part coil pack 4 is located between first plate 501 and second plate 502, specifically, main part 41 and the upper surface of first plate 501 and the lower surface butt of second plate 502 are favorable to coil pack 4 and magnetizer 5 to be spacing relatively in the axial direction. In addition, in the axial direction of the solenoid valve 100, the first plate 501 is located between the coil block 4 and the valve body 1, and the first plate 501 abuts against the valve body 1, which facilitates the assembly of the magnetic conductor 5 and the valve body 1, as shown in fig. 6.

With reference to fig. 4 and 6, the magnetic conductor 5 includes a tab portion 51, the tab portion 51 is located on the first plate 501, and in this embodiment, the tab portion 51 is integrally formed with the first plate 501, specifically, the first plate 501 includes a first end portion 5011 and a second end portion 5012, a first side portion 5013 and a second side portion 5014, the first end portion 5011 is a free end, the second end portion 5012 is connected to the third plate 503, and along the vertical direction of the third plate 503, the first side portion 5013 and the second side portion 5014 are both located between the first end portion 5011 and the second end portion 5012, and the first side portion 5013 and the second side portion 5014 are respectively located on both sides of the first end portion 5011; the lug part 51 is located at the first side 5013 and/or the second side 5014, and the lug part 51 protrudes relative to the first side 5013 and/or the second side 5014 of the first plate body 501. The lug part 51 has positioning holes 511, the positioning holes 511 have openings on both upper and lower surfaces of the lug part 51, and the positioning holes 511 are through holes. The locking piece 7 can be a screw, correspondingly, the valve body 1 is provided with a threaded hole, the positioning hole 511 of the lug part 51 is coaxially arranged with the threaded hole of the valve body 1, and the locking piece 7 passes through the positioning hole 511 from the upper part of the lug part 51 and extends into the threaded hole of the valve body 1 to form threaded connection with the valve body 1; locking piece 7 has two tip, be the spacing tip of locking piece 7 and the connection end of locking piece 7 respectively, the spacing tip of locking piece 7 is located lug part 51's top and with lug part 51's butt, at least partial locking piece 7's connection end is located locating hole 511 and with valve body 1 threaded connection, thereby be fixed in valve body 1 with lug part 51, be favorable to magnetizer 5 and valve body 1 spacing fixed relatively like this, magnetizer 5 and valve body 1 pass through locking piece 7 and connect, do not need to set up the mechanical connecting portion who is used for spacing magnetizer alone, the structure is simpler like this. Of course, the notch portion 53 is formed in the second plate member 502 corresponding to the lug portion 51, the notch portion 53 has openings in both the upper and lower surfaces and the side wall surface of the second plate member 502, the notch portion 53 is recessed with respect to the upper and lower surfaces and the side wall of the second plate member 502, and the notch portion 53 is formed in a notch-like structure, which facilitates the mounting of the lock member 7 and makes the structure of the solenoid valve 100 more compact, as shown in fig. 4.

With reference to fig. 3 and 5, the solenoid valve 100 has an accommodating chamber 405, the limit end of the locking member 7 is located in the accommodating chamber 405, and the accommodating chamber 405 includes a region between the first recess 420 and the magnetic conductor 5. Specifically, the coil block 4 includes a first recess 420, the first recess 420 is formed in the connecting portion 42, the first recess 420 is recessed from a second side wall 422 of the connecting portion 42, the first recess 420 forms an opening in a lower wall and a side wall of the connecting portion 42, and the first recess 420 is located between the first side wall 421 and the first through hole 404 in a direction perpendicular to a surface on which the first side wall 421 is located, or in a direction perpendicular to the first side wall 421. In the present embodiment, the first recess 420 has two openings, namely a first opening and a second opening, the first opening of the first recess 420 is formed on the lower wall of the connecting portion 42, and the second opening of the first recess 420 is formed on the second side wall 422, wherein the first opening and the second opening are communicated, as shown in fig. 3. The first opening of the first recess 420 faces the upper wall of the lug part 51, so that the walls forming the accommodation chamber 405 include the wall of the first recess 420 and the upper wall of the lug part 51, as shown in fig. 5. The locking member 7 penetrates the positioning hole 511 of the lug part 51 and is connected to the valve body 1, the coil block 4 is rotated so that the limiting end of the locking member 7 can be located in the accommodating chamber 405 through the second opening of the first recess 420, as shown in fig. 7, the first recess 420 is provided in the coil block 4 so that the limiting end of the locking member 7 is located in the accommodating chamber 405, which is beneficial to reducing the overall volume of the solenoid valve 100, simplifying the structure, and reducing the cost, as shown in fig. 1.

Referring to fig. 3, 4 and 5, the coil assembly 4 includes a first position-limiting portion 45, and the magnetic conductor 5 includes a second position-limiting portion 52, in one embodiment, the first position-limiting portion 45 is a convex portion, and the second position-limiting portion 52 is a concave portion. The first stopper 45 protrudes from the lower wall of the connecting portion 42 toward the first plate 501 along the axial direction of the first through hole 404, and specifically, the first recess 420 further includes a third sidewall 423, the third sidewall 423 is located below the second sidewall 422 along the axial direction of the first through hole 404, the third sidewall 423 is closer to the axis of the first through hole 404 than the second sidewall 422, the third sidewall 423 is disposed opposite to the second opening of the first recess 420, and the third sidewall 423 intersects with the first sidewall 421. The main body portion 41 includes the first base portion 44, and the wall forming the first base portion 44 includes the first side wall 421, the third side wall 423, and the lower wall of the connecting portion 42, and the first base portion 44 is located below the connecting port portion 43 in the axial direction of the first through hole 404, or the first base portion 44 is closer to the magnetic conductor 5 than the connecting port portion 43. The first limiting portion 45 is specifically located on the first base portion 44, and the first limiting portion 45 protrudes relative to the lower wall of the first base portion 44 and protrudes toward the first plate body 501; the second position-limiting portion 52 is formed on the first plate 501, and the wall forming the second position-limiting portion 52 includes the wall of the lug part 51, or the second position-limiting portion 52 is disposed adjacent to the lug part 51; the second limiting portion 52 has an opening on the upper surface of the first plate 501, and the second limiting portion 52 is recessed relative to the upper wall of the first plate 501; the first position-limiting portion 45 is located at the second position-limiting portion 52, and the second position-limiting portion 52 is in clearance fit with the first position-limiting portion 45, so that the first position-limiting portion 45 and the second position-limiting portion 52 are mutually matched to prevent the coil assembly 4 from rotating relative to the magnetizer 5 along the radial direction, and the coil assembly 4 and the magnetizer 5 form a position limitation in the axial direction, thereby being beneficial to mutually limiting and fixing the coil assembly 4 and the magnetizer 5, as shown in fig. 5.

With reference to fig. 4, 7 and 8, the coil assembly 4 and the magnetic conductor 5 have at least two opposite mounting positions, in the present embodiment, the number of the second limiting portions 52 is three, the second limiting portions 52 are distributed along the circumferential direction of the magnetic conductor 5 to form three sub-portions, namely, a first sub-portion 521, a second sub-portion 522 and a third sub-portion 523, specifically, the first sub-portion 521 of the second limiting portion 52 is formed on the first side portion 5013, the second sub-portion 522 is formed on the second side portion 5014, and the third sub-portion 523 is formed on the first side portion 5011; the first sub-portion 521 and the second sub-portion 522 are disposed adjacent to the lug part 51, and at least one lug part 51 is closer to the third plate 503 than the first sub-portion 521 or the second sub-portion 522 along the vertical direction of the third plate 503, so that when the coil assembly 4 is rotated, the position-limiting end of the locking member 7 is located in the accommodating cavity 405 through the second opening of the first concave portion 420. The number of the first position-limiting portions 45 is one, and the first position-limiting portions 45 are matched with different second position-limiting portions 52, so that the relative installation positions of the coil assembly 4 and the magnetizer 5 in the radial direction can be changed, the interface portion 43 can be fixed towards different directions, and the electromagnetic valve 100 can be adapted to different installation situations, as shown in fig. 8. The first position-limiting portion 45 is located at the first sub-portion 521 of the second position-limiting portion 52, and when the coil assembly 4 and the magnetic conductor 5 are located at the installation position, the position-limiting end of the locking member 7 is located in the accommodating cavity 405, as shown in fig. 7. In the present embodiment, the second stopper portion 52 has openings on both the upper and lower surfaces and the side wall surface of the first plate 501, the second stopper portion 52 is recessed with respect to the upper and lower surfaces and the side wall surface of the first plate 501, and the second stopper portion 52 is formed in a notch-like structure, as shown in fig. 4. In other embodiments, the second limiting portion 52 may have openings only on the upper surface and the lower surface of the first plate body 501, and the second limiting portion 52 is formed in a through hole structure; alternatively, the second position-limiting portion 52 may have an opening only on the upper surface of the first plate 501, that is, the second position-limiting portion 52 is formed as a blind hole structure, and will not be described in detail. Of course, in other embodiments, the first position-limiting portion 45 may also be formed as a concave portion, and correspondingly, the second position-limiting portion 52 is formed as a convex portion, and the first position-limiting portion 45 and the second position-limiting portion 52 are mutually matched to also make the coil assembly 4 unable to rotate in the radial direction relative to the magnetic conductor 5, which will not be described in detail.

In the present embodiment, with reference to fig. 3, 4, and 7, in the radial direction of the coil block 4, the first recess 420 is located on one side of the first base 44, and the wall forming the first recess 420 includes the side wall of the first base 44; combine lug part 51 to be close to third plate body 503 at third plate body 503 vertical direction than spacing portion 52 of second, like this, when first spacing portion 45 is located the first sub-part 521 of spacing portion 52 of second, can make first concave part 420 relative with lug part 51, be favorable to forming and hold chamber 405, make the spacing tip of locking piece 7 be located by the second opening of first concave part 420 and hold chamber 405 simultaneously, be favorable to coil pack 4 and magnetizer 5's installation.

In another embodiment, the first position-limiting portion 45 may also be located on the upper wall of the connecting portion 42, and along the axial direction of the first through hole 404, the first position-limiting portion 45 protrudes from the upper wall of the connecting portion 42 to the second plate 502, accordingly, the second position-limiting portion 52 is formed on the second plate 502 of the magnetic conductor 5, the second position-limiting portion 52 is recessed relative to the lower wall of the second plate 502, and the second position-limiting portion 52 has an opening on the lower surface of the second plate 502, at this time, the first position-limiting portion 45 and the second position-limiting portion 52 are matched with each other, so that the coil assembly 4 cannot rotate radially relative to the magnetic conductor 5. In this embodiment, referring to fig. 9, the first recess 420 further includes a fourth side wall 424, the fourth side wall 424 is closer to the first through hole 404 than the first side wall 421 along the circumferential direction of the first through hole 404, the fourth side wall 424 is located below the first side wall 421 and the second side wall 422 along the axial direction of the first through hole 404, and the second opening of the first recess 420 penetrates through the side wall of the connecting portion 42, so that the coil assembly 4 is not interfered by the first base portion 44 when adjusting the radial relative position with the magnetic conductor 5, and the installation efficiency of the solenoid valve 100 is improved.

The features of the above-described embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features of the above-described embodiments are not described, but should be construed as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the features.

The above embodiments are only used for illustrating the present invention and not for limiting the technical solutions described in the present invention, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solutions and modifications thereof can be modified or substituted by the same by those skilled in the art without departing from the spirit and scope of the present invention, which should be covered by the claims of the present invention.

Claims

1. A solenoid valve comprising a valve body, a coil assembly and a magnetizer, wherein at least a portion of the magnetizer is disposed between the coil assembly and the valve body; the electromagnetic valve comprises a locking piece, and the locking piece is connected with the magnetizer and the valve body; the coil assembly comprises a first recess, the first recess forms a first opening on the lower wall of the coil assembly, the first recess forms a second opening on the side wall of the coil assembly, and the first opening faces the upper wall of the magnetizer; the solenoid valve has and holds the chamber, hold the chamber including first concave part with the region between the magnetizer, coil pack with the magnetizer has two at least relative mounting position, and wherein at least one relative mounting position, the spacing tip of locking piece is located hold the chamber.

2. The solenoid valve according to claim 1, wherein the coil assembly comprises a main body portion, a connecting portion and a connecting portion, the main body portion, the connecting portion and the connecting portion are of an integral structure, the first recess is formed in the connecting portion, and the first opening is formed in a lower wall of the connecting portion; the connecting part comprises a first side wall and a second side wall, the first side wall and the second side wall are intersected, the connecting part protrudes relative to the first side wall, the second opening is formed in the second side wall, and the limiting end part of the locking piece is positioned in the accommodating cavity through the second opening;

the main body part comprises a first through hole, and a sleeve of the electromagnetic valve is accommodated in the first through hole; along the vertical direction of the first side wall, the first concave part is positioned between the first side wall and the first through hole.

3. The solenoid valve of claim 1 or 2, wherein the solenoid valve comprises a first through hole, the coil assembly comprises a first position limiting portion, the magnetizer comprises a second position limiting portion, and the first position limiting portion is located at the second position limiting portion;

the magnetizer comprises a first plate body, a second plate body and a third plate body, the third plate body is connected with the first plate body and the second plate body, at least part of the first plate body is positioned between the valve body and the coil assembly along the axial direction of the first through hole, and the coil assembly is abutted against the lower wall of the second plate body and the upper wall of the first plate body;

first plate body includes lug portion, the locking piece runs through lug portion's hole, at least part the joint end of locking piece with the valve body is connected and then is fixed lug portion, the wall that holds the chamber includes lug portion's upper wall.

4. The solenoid valve according to claim 3, wherein the solenoid valve includes a main body portion and a connecting portion, the first recess includes a third side wall located below the second side wall in an axial direction of the first through hole, the third side wall being closer to an axis of the first through hole than the second side wall, the third side wall being disposed opposite to the second opening, the third side wall intersecting the first side wall; the body portion comprises a first base, the walls forming the first base comprising the first side wall, the third side wall and the lower wall of the connecting portion;

the first limiting part is formed into a convex part, the second limiting part is formed into a concave part, the first limiting part is formed on the first base part, and the first limiting part protrudes from the lower wall of the first base part to the first plate body along the axial direction of the first through hole; the spacing portion of second takes shape in first plate body, the spacing portion of second is relative the upper wall of first plate body is sunken, the spacing portion of second is in the upper surface of first plate body has the opening, forms the wall of the spacing portion of second includes the wall of lug portion.

5. The solenoid valve of claim 4, wherein the solenoid valve comprises a sleeve, the first plate comprises a first end portion, a second end portion, a first side portion and a second side portion, the first end portion is a free end, the second end portion is connected with the third plate, the first side portion and the second side portion are located between the first end portion and the second end portion along a vertical direction of the third plate, the first plate comprises a second through hole, the second through hole receives the sleeve, and the second through hole is coaxial with the first through hole.

6. The solenoid valve as claimed in claim 5, wherein the second position-limiting portion comprises three sub-portions, a first sub-portion of the second position-limiting portion is formed at the first side portion, a second sub-portion of the second position-limiting portion is formed at the second side portion, and a third sub-portion of the second position-limiting portion is formed at the first end portion;

the lug parts are formed on the first side part and/or the second side part, and at least one lug part is closer to the third plate body than the second limiting part along the vertical direction of the third plate body.

7. The electromagnetic valve according to claim 3, wherein the electromagnetic valve includes a connecting portion, the first stopper portion is shaped as a convex portion, the second stopper portion is shaped as a concave portion, and the first stopper portion protrudes from an upper wall of the connecting portion toward the second plate body in an axial direction of the first through hole; the second limiting portion is formed on the second plate body, the second limiting portion is recessed relative to the lower wall of the second plate body, and the second limiting portion is provided with an opening on the lower surface of the second plate body.

8. The electromagnetic valve according to claim 7, wherein the first recess includes a fourth side wall that is closer to the first through hole than the first side wall in a circumferential direction of the first through hole, the fourth side wall being located below the first side wall and the second side wall, the second opening penetrating through a side wall of the connecting portion.