CN117628251A - Electromagnetic valve - Google Patents

Abstract

The application discloses solenoid valve, including clamp, disk seat and magnetizer, the clamp with magnetizer fixed connection or spacing connection, the clamp is equipped with clamp screens portion, the magnetizer includes first portion and second portion, the second portion is relative first portion is closer to the disk seat, the second portion is equipped with down the terminal surface, clamp screens portion with have the interval of predetermineeing down between the terminal surface, the disk seat is equipped with the screens groove, clamp screens portion at least part limit is located the screens groove. The magnetizer of the electromagnetic valve is provided with the clamp, and the clamp clamping position part of the clamp and the lower end face of the magnetizer are provided with intervals, so that the clamp clamping position part is provided with a certain deformation space, and can be well clamped into the clamping groove of the valve seat, thereby reliably limiting the valve seat and the magnetizer in the axial direction.

Description

Electromagnetic valve

Technical Field

The invention relates to the technical field of valve structures, in particular to an electromagnetic valve.

Background

The electromagnetic valve comprises an electromagnetic coil and a valve body, wherein the electromagnetic coil is inserted into a sleeve of the valve body, a valve seat of the valve body is a thin-wall stretching piece, a concave hole is formed in the upper end of the valve body through punching, a clamping plate is arranged at the bottom of a magnetizer of the electromagnetic coil and is provided with a convex point, the convex point is only clamped into the concave hole to form an axial clamping connection, so that the positioning of the electromagnetic coil and the valve body is realized, and the positioning effect is not ideal.

Disclosure of Invention

The application provides an electromagnetic valve, including clamp, disk seat and magnetizer, the clamp with magnetizer fixed connection or spacing connection, the clamp is equipped with clamp screens portion, the magnetizer includes first portion and second portion, the second portion is relative first portion is closer to the disk seat, the second portion is equipped with down the terminal surface, clamp screens portion with have the interval of predetermineeing down between the terminal surface, the disk seat is equipped with the screens groove, clamp screens portion at least part limit is located the screens groove.

In a specific embodiment, an annular groove is formed in the outer peripheral wall of the valve seat, a part of groove sections of the annular groove are the clamping grooves, the rest groove sections are anti-falling grooves, and the axial height and the radial depth of the clamping grooves are larger than those of the anti-falling grooves; the clamp is provided with clamp screens portion, clamp screens portion can block into the screens groove or the anticreep groove to fix the disk seat with the clamp.

In a specific embodiment, the annular groove comprises at least one group of clamping grooves, and one group of clamping grooves comprises two clamping grooves which are arranged radially symmetrically; the clamp is provided with two clamp clamping parts, and the two clamp clamping parts correspond to a group of clamping grooves; or, the annular groove is provided with a clamping groove, and the clamp is provided with a clamp clamping part.

In a specific embodiment, the section of the clamping groove and the anti-falling groove along the radial direction of the valve seat is V-shaped or U-shaped.

In one specific embodiment, the clamping groove and the anti-falling groove are in smooth transition connection in the circumferential direction.

In one embodiment, the end edge of the valve seat near one end of the electromagnetic coil is provided with a pressing guide part, and the pressing guide part is an annular chamfer arranged at the end edge of the valve seat.

In a specific embodiment, the clamp is formed by bending a metal wire, the clamp is provided with at least two clamp fixing parts, the magnetizer is provided with a magnetizer fixing part, the magnetizer fixing part is a buckle with a bayonet, and the clamp fixing part is clamped into the bayonet for fixing.

In one embodiment, the clip is U-shaped, or closed loop, or loop with an opening.

In one embodiment, the clip is bent to form a first portion and a second portion, the first portion of the clip being located outside the second portion of the magnetic conductor, and the second portion of the clip being located outside the first portion of the magnetic conductor.

In a specific embodiment, the clip is U-shaped, two free ends of the clip extend to two sides to form two clip fixing portions, and a bottom of the clip is recessed inwards to form a recess, and the recess is one clip fixing portion.

In a specific embodiment, the lower end of the second part of the magnetizer is provided with a magnetizer fixing part with opposite bayonets, the clamp is in a closed ring shape or an open ring shape, and the clamp comprises two clamp sections which are oppositely arranged and form the clamp fixing part.

In one embodiment, the valve seat is machined.

The magnetizer of the electromagnetic valve is provided with the clamp, and the clamp clamping position part of the clamp and the lower end face of the magnetizer are provided with intervals, so that the clamp clamping position part is provided with a certain deformation space, and can be well clamped into the clamping groove of the valve seat, thereby reliably limiting the valve seat and the magnetizer in the axial direction.

Drawings

Fig. 1 is a schematic structural view of a solenoid valve according to a first embodiment of the present application;

FIG. 2 is a schematic view of the valve body of FIG. 1;

FIG. 3 is a left side view of the valve body of FIG. 2;

FIG. 4 is an enlarged view of the valve seat and sleeve interface position of the valve body of FIG. 2;

FIG. 5 is an enlarged view of the valve seat and sleeve interface position of the valve body of FIG. 3;

FIG. 6 is a schematic perspective view of the electromagnetic coil of FIG. 1;

FIG. 7 is a schematic diagram of the magnetic conductor of the electromagnetic coil of FIG. 6;

FIG. 8 is a top view of FIG. 7;

FIG. 9 is a schematic view of the clip of FIG. 6;

FIG. 10 is a schematic view of the magnetizer and clip connection of FIG. 6;

FIG. 11 is a top view of FIG. 10;

FIG. 12 is a left side view of FIG. 11;

FIG. 13 is a bottom view of FIG. 11;

FIG. 14 is an axial cross-sectional view of the solenoid valve of FIG. 1 in a position where the yoke is coupled to the valve body, the yoke not yet being snapped into the valve body's catch groove;

FIG. 15 is a schematic view of the clip of FIG. 14 after being snapped into a slot;

FIG. 16 is a schematic illustration of a magnetizer and clip connection for a solenoid valve according to a second embodiment of the present application;

FIG. 17 is a schematic view of the clip of FIG. 16;

FIG. 18 is a schematic view of the magnetizer of FIG. 16;

FIG. 19 is an axial cross-sectional view of the attachment location of the yoke to the valve body in a second embodiment of the present application;

FIG. 20 is a schematic illustration of a magnetizer and clip connection for a solenoid valve according to a third embodiment of the present application;

FIG. 21 is a schematic view of the clip of FIG. 20;

FIG. 22 is a top view of the clip of FIG. 21;

fig. 23 is an axial cross-sectional view of the attachment location of the yoke to the valve body in a third embodiment of the present application.

The reference numerals in fig. 1-23 are illustrated as follows:

10-valve body;

11-a sleeve;

12-valve seat; 12a 1-a first clamping groove; 12a 2-a second clamping groove; 12 b-a press-in guide; 12 c-an anti-slip groove;

13-a first connection pipe;

14-a second connection pipe;

20-electromagnetic coils;

21-a magnetizer; 211-a bottom plate; 211 a-a first edge portion; 211 b-a second edge portion; 212-side plates; 213-top plate; 21a 1-a first magnetizer fixing portion; 21a 2-a second magnetizer fixing portion; 21a 3-a third magnetizer fixing portion; 21 b-a lower through hole of the magnetizer;

22-clamping hoop; 22a 1-a first clip fixing portion; 22a 2-a second clip fixing portion; 22a 3-a third clip fixing portion; 22b 1-a first clip detent; 22b 2-second clip detent; 22b 3-side bar segment

23-coil assembly.

Detailed Description

In order to better understand the aspects of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

Example 1

Referring to fig. 1-3, fig. 1 is a schematic structural diagram of a solenoid valve according to a first embodiment of the present application; fig. 2 is a schematic view of the valve body 10 in fig. 1; fig. 3 is a left side view of the valve body 10 of fig. 2.

The electromagnetic valve in the present embodiment includes a valve body 10 and an electromagnetic coil 20, and the valve body 10 specifically includes a sleeve 11, a valve seat 12, a first connection pipe 13, a second connection pipe 14, and components installed inside the sleeve 11 and the valve seat 12. Wherein sleeve 11 and disk seat 12 coaxial arrangement, solenoid 20 cover are established in sleeve 11's periphery side, and disk seat 12 is located sleeve 11's below, and disk seat 12's one side sets up first takeover 13, and disk seat 12 axial below sets up second takeover 14, and first takeover 13 can be the entry pipeline, and second takeover 14 can be the outlet pipeline, and it is known that first takeover 13 is the outlet pipeline, and second takeover 14 also can be the entry pipeline. The upper and lower directions are the axial direction of the electromagnetic valve with the view of fig. 1, the valve seat 12 is internally provided with a valve port, and the sleeve 11 is internally provided with an iron core.

With continued reference to fig. 4 and 5, fig. 4 is an enlarged view of the junction between the valve seat 12 and the sleeve 11 of the valve body 10 in fig. 2; fig. 5 is an enlarged view of the junction of the valve seat and the sleeve 11 of the valve body 10 of fig. 3.

In fig. 4, the outer peripheral wall of the end portion of the valve seat 12 near the sleeve 11 is provided with a clamping portion, that is, the clamping portion is disposed at the side portion of the valve seat 12, and is the outer peripheral wall of the side portion, the valve seat 12 is specifically provided with two clamping portions, that is, a first clamping groove 12a1 and a second clamping groove 12a2, respectively, and the first clamping groove 12a1 and the second clamping groove 12a2 are symmetrically disposed with respect to the central line (that is, the axis) of the valve seat 12, and the clamping groove in this embodiment may be a V-shaped groove as described in fig. 4, a U-shaped groove or the like, where the V-shape or the U-shape is a section along the radial direction of the valve seat 12. The end edge of the upper end of the valve seat 12 is provided with a press-in guiding portion 12b, the press-in guiding portion 12b is an annular guiding surface and is located above the first clamping groove 12a1 and the second clamping groove 12a2, the valve seat 12 in this embodiment can be formed by machining, and the first clamping portion 12a1, the second clamping portion 12a2 and the press-in guiding portion 12b can be formed by post-machining, so that the precision of the valve seat 12 is not affected by the machining forming clamping portion. The first and second latching grooves 12a1 and 12a2 are for latching engagement with a clip 22 described below.

With continued reference to fig. 6-8, fig. 6 is a schematic perspective view of the electromagnetic coil 20 in fig. 1; fig. 7 is a schematic diagram of the structure of the magnetizer of the electromagnetic coil 20 in fig. 6; FIG. 8 is a top view of FIG. 7; FIG. 9 is a schematic view of the clip of FIG. 6; FIG. 10 is a schematic view of the magnetizer and clip connection of FIG. 6; FIG. 11 is a top view of FIG. 10; FIG. 12 is a left side view of FIG. 11; fig. 13 is a bottom view of fig. 11.

The electromagnetic coil 20 of the electromagnetic valve comprises a magnetizer 21, a clamp 22 and a coil assembly 23, wherein an enameled wire winding is arranged in the coil assembly 23, and the enameled wire winding can generate an electromagnetic field after being electrified. After the electromagnetic coil 20 of the electromagnetic valve is electrified, an iron core is arranged in the sleeve 11 of the valve body 10, and the iron core can axially move under the action of electromagnetic force so as to realize the on-off function of a valve port in the valve seat 12.

The clip 22 in this embodiment may be formed by bending a rod or bar, such as by bending a wire with good flexibility. As shown in fig. 9, the clip 22 is formed by bending a steel wire, the clip 22 has a substantially U-shaped structure including two side bar sections and a bottom bar section, and the U-shaped clip 22 is divided into a first portion 221 and a second portion 222 near the bottom in a direction from the opening to the bottom, and the second portion 222 is bent with respect to the first portion 221 at a bending angle of substantially 90 degrees. In this embodiment, the magnetizer 21 includes a first portion and a second portion, wherein the second portion is closer to the valve seat 12 than the first portion, as can be understood with reference to fig. 7 and 10, the magnetizer 21 includes a top plate 213, a bottom plate 211, and a side plate 212 connecting the top plate 213 and the bottom plate 211, which are disposed opposite to each other in the axial direction, where the bottom plate 211 is the second portion of the magnetizer 21, the side plate 212 is the first portion of the magnetizer 21, i.e., the magnetizer 21 has a generally U-shaped structure, after the clip 22 is connected to the magnetizer 21, the first portion 221 of the clip 22 is located outside the bottom plate 211 (the side of the bottom plate 211 close to the coil assembly 23 is the inner side, or vice versa), and the first portion 221 is also located below the bottom plate 211, the second portion 222 is located outside the side plate 212 of the magnetizer 21 (the side of the side plate 212 close to the coil assembly 23 is the inner side, or vice versa), and the second portion 212 of the clip 22 may be attached to the side plate 22 or have a certain clearance, and the angle between the first portion 221 and the second portion 222 of the clip 22 and the side plate 211 is generally equal.

With continued reference to fig. 9, the clip 22 is provided with three fixing portions, the U-shaped clip 22 has two free ends located at the opening positions thereof, the two free ends are respectively provided with a first clip fixing portion 22a1 and a second clip fixing portion 22a2 of the clip 22, the first clip fixing portion 22a1 and the second clip fixing portion 22a2 are in a hook structure, and the two free ends of the clip 22 respectively extend outwards, i.e. outwards away from the direction of the U-shaped clip enclosing region. The bottom pole section of the U-shaped clamp 22 is provided with a third clamp fixing part 22a3, and the third clamp fixing part 22a3 is a concave part formed by inward concave of the middle part of the bottom pole section, and is inward, namely, in a direction close to the surrounding area of the U-shaped clamp.

Specifically, as shown in fig. 7, the bottom plate 211 of the magnetic conductor 21 includes a first edge portion 211b that contacts the side plate 212 and a second edge portion 211a that faces the first edge portion 211b, and the first magnetic conductor fixing portion 21a1 and the second magnetic conductor fixing portion 21a2 that are distributed along the extending direction of the second edge portion 211a are provided at the position of the second edge portion 211a, and the first magnetic conductor fixing portion 21a1 and the second magnetic conductor fixing portion 21a2 are formed with a bayonet that is oriented in the direction from the first edge portion 211b to the second edge portion 211a. The side plate 212 of the magnetizer 21 is provided with a third magnetizer fixing portion 21a3, and the third magnetizer fixing portion 21a3 also forms a bayonet toward the first edge portion 211 b. In fig. 7, the first, second, and third magnetic conductor fixing portions 21a1, 21a2, and 21a3 may be formed by directly processing the magnetic conductor 21, and press-bending portions of the bottom plate 211 and the side plate 212 of the magnetic conductor 21.

As shown in fig. 10, when the clip is mounted, the first clip fixing portion 22a1 and the second clip fixing portion 22a2 of the clip 22 can be engaged with the bayonet of the first magnetic conductor fixing portion 21a1 and the second magnetic conductor fixing portion 21a2 of the magnetic conductor 21, and the third clip fixing portion 22a3 of the clip 22 can be engaged with the third magnetic conductor fixing portion 21a3 of the magnetic conductor 21. The clamp 22 has certain deformability, can be deformed under the action of external force so as to be positioned near the fixing part of the corresponding magnetizer to be clamped, and after the external force is removed, the clamp 22 rebounds to be clamped in place, so that the aim of clamping and fixing is fulfilled. Taking fig. 10 as an example, the third magnetizer fixing portion 21a3 may be first engaged, the first clip fixing portion 22a1 and the second clip fixing portion 22a2 may be positioned between the first magnetizer fixing portion 21a1 and the second magnetizer fixing portion 21a2 in a close proximity to each other, and after the external force is removed, the first clip fixing portion 22a1 and the second clip fixing portion 22a2 are separated from each other by the rebound effect and engaged in the first magnetizer fixing portion 21a1 and the second magnetizer fixing portion 21a2. Of course, the mounting sequence is not limited to this, and the three clamping positions can be deformed by external force and performed simultaneously due to certain elasticity.

At this time, the first portion 221 of the clip 22 is prevented from moving in the direction toward the first edge 211b by the first clip fixing portion 22a1 and the second clip fixing portion 22a2 being engaged with the bayonet of the first magnetic conductor fixing portion 21a1 and the bayonet of the second magnetic conductor 21a2, and the second portion 222 is prevented from moving in the direction away from the first edge 211b by the bending of the first portion 221 and the second portion 222, and the second portion 222 is prevented from moving toward the side plate 212, so that the clip 22 is restricted in the other directions by the first magnetic conductor fixing portion 21a1 and the second magnetic conductor fixing portion 21a2 of the magnetic conductor 21, respectively, and therefore the first portion 221 cannot move and accordingly the second portion 222 cannot move. The second portion 222 of the clip 22 is provided with the third clip fixing portion 22a3 to be engaged with the third magnetic conductor fixing portion 22a3 of the magnetic conductor 21, and the second portion 222 is hard to move in a direction away from the side plate 212, thereby maintaining the reliability of engagement with the side plate 212. It is understood that the bayonet of the third magnetizer fixing portion 22a3 may be reversely arranged. Therefore, the clip 22 and the magnetic conductor 21 can be completely fixed by the three fixing portions corresponding to the clip 22 and the magnetic conductor 21, so that the clip 22 does not move or slide relatively.

In addition, in the present embodiment, the two side bar sections of the U-shaped clip 22 corresponding to the first portion 221 include a straight bar section having a certain distance from the bottom plate 211 of the magnetizer 21, and the position where the two ends of the straight bar section meet the bottom plate 211 or the distance from the bottom plate 211 is smaller than the distance between the straight bar section and the bottom plate 211, so that an elastically deformable space can be provided, and the two straight bar sections are respectively defined as a first clip clamping portion 22b1 and a second clip clamping portion 22b2, that is, the clip clamping portions need to have a distance from the bottom plate 211 for being matched and clamped with the first clamping groove 12a1 and the second clamping groove 12a2 of the valve body 10.

Referring specifically to fig. 14 and 15, fig. 14 is an axial cross-sectional view of the solenoid valve of fig. 1 at the location where the clip 22 is attached to the valve body 10, where the clip 22 has not yet snapped into the catch of the valve body 10; fig. 15 is a schematic view of the clip 22 of fig. 14 after it is snapped into a slot.

In the solenoid valve of this embodiment, when the sleeve 11 of the valve body 10 is inserted into the lower through hole 21b of the magnetizer at the lower part of the solenoid 20, the insertion direction of the valve body 10 and the solenoid 20 is adjusted, and at this time, as shown in fig. 14, the first clamping groove 12a1 and the second clamping groove 12a2 corresponding to the valve seat 12 are substantially aligned with the directions of the first clamping part 22b1 and the second clamping part 22b2 of the clamp 22, and the first clamping part 22b1 and the second clamping part 22b2 of the clamp 22 are just in contact with the press-in guide part 12b of the valve seat 12, and if no downward force is applied to the solenoid 20, the two clamping parts of the clamp 22 of the magnetizer 21 cannot enter the two clamping parts of the valve seat 12.

As shown in fig. 15, when a downward force is applied to the solenoid 20 in fig. 14, the clip 22 is radially outwardly deformed by the guide of the press-in guide portion 12b, that is, the first clip engaging portion 22b1 and the second clip engaging portion 22b2 of the clip 22 are elastically deformed to expand to both sides in a direction perpendicular to the press-in direction, so that the first clip engaging portion 22b1 and the second clip engaging portion 22b2 of the clip 22 continue to move downward and finally engage in the first engaging groove 12a1 and the second engaging groove 12a2 of the valve seat 12, and the valve body 10 and the solenoid 20 are mounted.

It can be known that the number of the clamping slots on the valve seat 12 can be set as required, for example, a multiple of 2 is set, that is, two clamping slots which can correspond to two clamping portions of the clamping band 22 are used as a group, multiple groups of clamping slots can be set, each group of clamping slots is radially symmetrical, and thus, the relative installation angle of the electromagnetic coil 20 and the valve seat 12 can be adjusted, and the selection can be performed according to the actual assembly scene, so that the installation and arrangement of parts such as leads of the assembled electromagnetic coil 20 are facilitated.

It should be noted that, in the present embodiment, the circumferential positions of the two clamping grooves of the valve seat 12 are further provided with an anti-disengagement groove 12c, and the anti-disengagement groove 12c is also substantially in a V-shaped groove structure, and of course, may be other grooves, such as a U-shape. The anti-disengagement groove 12c is circumferentially distributed and connected with the first clamping groove 12a1 and the second clamping groove 12a2, the axial height and the radial depth of the anti-disengagement groove 12c are respectively and correspondingly smaller than the axial height and the radial depth of the clamping groove, the anti-disengagement groove can be understood as an annular groove arranged around the outer peripheral wall of the valve seat 12, a part of groove sections with larger sizes are clamping grooves, and the rest groove sections are anti-disengagement grooves 12c, and can be understood by comparing fig. 4 and 5. The anti-disengagement groove 12c is mainly used for fixing the solenoid 20 to the valve body 10, if the clamping portion of the clamp 22 is not pressed into the clamping groove of the valve seat 12, but is pressed into the anti-disengagement groove 12c, the anti-disengagement groove 12c can also axially compress the clamp 22 to fix the clamp 22 and the valve seat 12, i.e. the solenoid 20 cannot be separated from the valve body 10. It is known that the size of the detent groove is large to more reliably clamp the clip detent portion and to play a role in fixing and determining the angle of the solenoid 20 with the valve body 10, while the anti-escape groove 12c serves as redundancy of the detent groove, so long as a certain fixing purpose is played, its fixing effect is inferior to that of the detent groove, and in addition, only a part of the annular groove is set to have a large size and also has a small influence on the strength of the valve seat 12.

In addition, the sizes of the clamping grooves (the first clamping groove 12a1 and the second clamping groove 12a 2) of the annular groove and the anti-falling groove 12c are different, the clamping grooves and the anti-falling groove 12c are combined to form the annular groove, the clamping grooves and the anti-falling groove 12c can be connected in a gentle transition mode, as shown in fig. 5, the axial height and the radial depth of the two ends of the clamping grooves and the anti-falling groove 12c are the same, then the clamping grooves gradually increase to the maximum value along the circumferential direction, and then gradually decrease to the other end, and the clamping grooves and the anti-falling groove 12c at the other end are the same in size. As seen in fig. 5, the upper and lower profiles of the front projection of the first detent groove 12a1 in the axial plane are substantially arc-shaped. So set up, the card position groove that corresponds is gone into to more easily direction clamp screens portion card.

In addition, the above-mentioned being equipped with and being the chamfer form and impressing the guiding portion 12b in the top of screens groove, mainly used when the clamp screens portion of clamp 22 presses the screens groove of disk seat 12, can reduce the equipment and impress the power, and solenoid 20 embolias along the axial direction of sleeve 11 gently and can suit in place, and the equipment is easy to operate.

Example 2

Referring to fig. 16-19, fig. 16 is a schematic view of the connection of the magnetic conductor 21 and the clip 22 of the solenoid valve according to the second embodiment of the present application; FIG. 17 is a schematic view of clip 22 of FIG. 16; fig. 18 is a schematic view of the magnetizer 21 in fig. 16; fig. 19 is an axial cross-sectional view of the attachment location of the clip 22 to the valve body 10 in a second embodiment of the present application.

In contrast to the U-shaped collar 22 of the first embodiment, the collar 22 of the present embodiment is designed as an endless collar 22, the collar 22 likewise being formed by bending a wire, for example a steel wire. In addition, the clip 22 in the first embodiment is divided into a first portion 221 corresponding to the bottom plate 211 of the magnetic conductor 21 and a second portion 222 corresponding to the side plate 212, and the annular clips 22 in the present embodiment are each provided corresponding to the bottom plate 211, outside the bottom plate 211, with the view of fig. 19 as a whole, that is, below the bottom plate 211.

As will be understood from fig. 16 to 18, the magnetizer 21 in this embodiment is provided with two magnetizer fixing portions, that is, a first magnetizer fixing portion 21a1 and a second magnetizer fixing portion 21a2, respectively, and the two magnetizer fixing portions are in a fastening structure with opposite bayonets, and in fig. 16, the bayonets of the first magnetizer fixing portion 21a1 face the first edge portion 211b, and the bayonets of the second magnetizer fixing portion 21a2 face the second edge portion 211a. The second magnetic conductor fixing portions 21a1 and the first magnetic conductor fixing portions 21a2 are distributed along the direction in which the first edge portion 211b of the bottom plate 211 points to the second edge portion 211a. The annular clip 22 is rectangular, and two opposite pole segments include straight pole segments forming a first clip retaining portion 22b1, a second clip retaining portion 22b2, respectively, and two other opposite pole segments are a first clip fixing portion 21a1 and a second clip fixing portion 21a2. When the clip 22 is assembled with the magnetic conductor 21, the first clip fixing portion 22a1 and the second clip fixing portion 22a2 of the clip 22 are respectively engaged with the bayonet of the first magnetic conductor fixing portion 21a1 and the bayonet of the second magnetic conductor fixing portion 21a2 of the magnetic conductor 21, and the clip 22 and the magnetic conductor 21 do not move or slide relative to each other. When the clamp 22 is mounted, an external force can be applied to deform the clamp 22, the first clamp fixing portion 22a1 and the second clamp fixing portion 22a2 can be mutually close to be positioned between the first magnetizer fixing portion 21a1 and the second magnetizer fixing portion 21a2, and after the external force is removed, the first clamp fixing portion 22a1 and the second clamp fixing portion 22a2 are mutually far away under the rebound effect and are clamped in bayonets of the corresponding magnetizer fixing portions. It is known that the first and second magnetic conductor fixing portions 21a1 and 21a2 may have a certain elasticity, such as being lifted up by an external force, so as to facilitate the clamping of the clamp fixing portion. In fig. 16, the outer surfaces of the first and second magnetic conductor fixing portions 21a1 and 21a2 are guide surfaces, and the corresponding clip fixing portions can be guided to be engaged with the corresponding magnetic conductor fixing portions.

It should also be appreciated that the collar 22 in this embodiment is a closed ring shape, and the ring shaped collar may be formed by the bending design of the first embodiment, i.e., also bending to form the first portion 221 corresponding to the bottom plate 211 and the second portion 222 corresponding to the side plate 212, and the bending design is equally applicable to other embodiments of the present application. The first embodiment is provided with three magnetizer fixing parts and three clamp fixing parts, the second embodiment is provided with two magnetizer fixing parts and two clamp fixing parts, and it is known that more than two magnetizer fixing parts and corresponding clamp fixing parts are at least arranged to achieve the purpose of fixing, the number is not limited, and the clamping connection can be conveniently achieved, and the purpose of fixing the effect can be achieved.

In this embodiment, the valve body 10 has the same structure as the first embodiment, and as shown in fig. 19, the electromagnetic coil 20 and the valve body 10 are mounted in the same manner as the first embodiment, and the first clip engaging portion 22b1 and the second clip engaging portion 22b2 slide into the corresponding first engaging groove 12a1 and second engaging groove 12a2 along the press-in guide portion 21 b.

Example 3

Referring to fig. 20-23, fig. 20 is a schematic view showing the connection of the magnetic conductor 21 and the clip 22 of the solenoid valve according to the third embodiment of the present application; FIG. 21 is a schematic view of clip 22 of FIG. 20; FIG. 22 is a top view of the clip 22 of FIG. 21; fig. 23 is an axial cross-sectional view of the attachment location of the yoke 22 to the valve body 10 in a third embodiment of the present application.

In this embodiment, the clip 22 is substantially the same as the second embodiment, except that the opening 22a is provided to provide greater deformability, and the clip 22 in the second embodiment may be provided with an opening, and the position of the opening is not limited. In addition, after the yoke 22 of the present embodiment is attached to the magnetic conductor 21, the center of the yoke 22 and the center axis of the solenoid valve are offset, and the yoke 22 and the magnetic conductor 21 are fixed in the same manner as in the second embodiment. As shown in fig. 21, the valve seat 12 of the valve body 10 of the present embodiment is basically the same as the above embodiment, but only a single clamping groove is used, that is, only the first clamping groove 12a1 is provided, one of the two opposite rod sections of the clip 22 is the first clip clamping portion 22b1, and the other rod section 22b3 is not used as the clamping portion, and after the valve body 10 and the solenoid 20 are assembled, the first clip clamping portion 22b1 of the clip 22 is clamped and fixed with the first clamping groove 12a1 of the valve seat 12.

The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.

Claims (12)

1. The utility model provides a solenoid valve, its characterized in that, includes clamp, disk seat and magnetizer, the clamp with magnetizer fixed connection or spacing connection, the clamp is equipped with clamp screens portion, the magnetizer includes first portion and second portion, the second portion is relative first portion is closer to the disk seat, the second portion is equipped with down the terminal surface, clamp screens portion with have the interval of predetermineeing between the terminal surface down, the disk seat is equipped with the screens groove, clamp screens portion at least part limit is located the screens groove.

2. The electromagnetic valve according to claim 1, wherein an annular groove is formed in the peripheral wall of the valve seat, a part of groove sections of the annular groove are the clamping grooves, the rest groove sections are anti-falling grooves, and the axial height and the radial depth of the clamping grooves are larger than those of the anti-falling grooves; the clamp is provided with clamp screens portion, clamp screens portion can block into the screens groove or the anticreep groove to fix the disk seat with the clamp.

3. The solenoid valve of claim 2 wherein said annular groove includes at least one set of said detents, one set of said detents including two radially symmetrically disposed said detents; the clamp is provided with two clamp clamping parts, and the two clamp clamping parts correspond to a group of clamping grooves; or, the annular groove is provided with a clamping groove, and the clamp is provided with a clamp clamping part.

4. A solenoid valve according to claim 3 wherein said detent groove and said anti-pull-out groove are V-shaped or U-shaped in cross section along a radial direction of said valve seat.

5. The electromagnetic valve according to claim 2, wherein the detent groove and the anti-slip groove meet in a gentle transition in the circumferential direction.

6. The solenoid valve of claim 2 wherein said valve seat defines a push-in guide at an end edge adjacent one end of said solenoid, said push-in guide being an annular chamfer disposed at an end edge of said valve seat.

7. The solenoid valve of any one of claims 1-6 wherein the clip is formed from a bent wire, the clip providing at least two clip securing portions, the magnetizer providing a magnetizer securing portion, the magnetizer securing portion being a snap having a bayonet, the clip securing portion being snapped into the bayonet.

8. The solenoid valve of claim 7 wherein said yoke is U-shaped, or closed annular, or annular with an opening.

9. The solenoid valve of claim 8 wherein said yoke is bent to form a first portion and a second portion, said first portion of said yoke being located outside of said second portion of said magnetic conductor, said second portion of said yoke being located outside of said first portion of said magnetic conductor.

10. The solenoid valve of claim 9 wherein said yoke is U-shaped with two free ends of said yoke extending to both sides to form two of said yoke fixing portions, a bottom of said yoke being recessed inwardly to form a recess, said recess being one of said yoke fixing portions.

11. The solenoid valve of claim 7 wherein said second portion of said magnetic conductor has a lower end provided with a magnetic conductor securing portion with opposite bayonet, said clip being closed annular or having an open annular shape, said clip including two clip segments disposed opposite each other, each forming said clip securing portion.

12. A solenoid valve according to any one of claims 1 to 6 wherein said valve seat is machined.