WO2021254419A1

WO2021254419A1 - Solenoid valve

Info

Publication number: WO2021254419A1
Application number: PCT/CN2021/100520
Authority: WO
Inventors: 魏先让
Original assignee: 浙江三花智能控制股份有限公司
Priority date: 2020-06-17
Filing date: 2021-06-17
Publication date: 2021-12-23
Also published as: CN113803512A; CN113803512B

Abstract

A solenoid valve, comprising a valve body (1), a coil (2), a coil fixing frame (3), and a fastening piece (4). The coil (2) comprises a coil body (21) and a magnetizer (22), and the magnetizer (22) comprises a magnetizer lower portion (224); the coil fixing frame (3) comprises a coil connecting portion (32); the fastening piece (4) comprises a fastening connecting portion (43), a fastening receiving portion (42), and a fastening clamping site portion (41); the fastening connecting portion (43) is fixedly connected to the magnetizer (22); the fastening clamping site portion (41) protrudes towards the magnetizer lower portion (224) relative to the fastening receiving portion (42); and the fastening clamping site portion (41) can abut against the coil connecting portion (32) so that the coil (2) is fixedly connected to the valve body (1). The valve body and the coil of the described solenoid valve can be fixedly connected by means of the mutual cooperation of the coil fixing frame and the fastening piece, and the assembly and separation of the valve body and the coil are convenient.

Description

The electromagnetic valve

Requirements for this application:

The priority of the Chinese patent application filed with the Chinese Patent Office on June 17, 2020, the application number is 202010553503.7, and the invention name is "solenoid valve", the entire content of which is incorporated into this application by reference.

Technical field

This application relates to the field of electromagnetic control technology, and in particular to an electromagnetic valve.

Background technique

The solenoid valve mainly includes a coil and a valve body. Figure 13 shows a typical connection between the coil and the valve body of the solenoid valve. The solenoid valve includes a valve body. The upper end of the valve body is provided with a threaded hole. The magnet, the valve body penetrates the through hole of the coil body, in addition, the solenoid valve further includes a screw, the screw of the screw passes through the through hole on the magnet, and then is threaded with the valve body to realize the connection between the coil and the valve body.

Summary of the invention

The present invention provides a solenoid valve, including: a valve body and a coil;

The coil includes a coil body and a conductive magnet, the coil body includes a through hole portion of the coil body, the conductive magnet includes a through hole portion of the conductive magnet, and the valve body is penetrated through the through hole portion of the conductive magnet and the coil The body through-hole portion, the magnetizer includes a lower portion of the magnetizer;

It also includes coil holders and fasteners;

The coil fixing frame includes a coil connecting portion, and the coil fixing frame is fixedly connected to the valve body;

The buckle includes a buckle connection portion, the buckle connection portion is fixedly connected to the conductive magnet; the buckle includes a buckle accommodating portion, the buckle accommodating portion includes a first buckle accommodating portion and A second buckle accommodating portion; the buckle includes a buckle locating portion, the buckle locating portion protrudes toward the lower part of the conductive magnet relative to the buckle accommodating portion;

The buckle positioning portion and the coil connecting portion can abut to make the coil and the valve body fixedly connected.

In the solenoid valve of the present application, the valve body and the coil can be connected through the coil fixing frame and the buckle, and the assembly of the valve body and the coil is relatively convenient.

Description of the drawings

Figure 1 is a cross-sectional view of the valve body of the solenoid valve of the present invention;

Figure 2 is a schematic diagram of the solenoid valve with the coil dissected;

Figure 3 is a schematic view of the structure of the valve body in Figure 2;

Fig. 4 is a schematic diagram of the structure of the coil in Fig. 2;

FIG. 5 is a schematic diagram of the structure of the magnetic conductor and the fastener in FIG. 4 before assembling;

6 is a schematic diagram of the structure of the magnet and the fastener in FIG. 4 after being assembled;

Figure 7 is a schematic view of the structure of the solenoid valve of the present invention;

Figure 8 is a bottom view of the solenoid valve in Figure 7;

Fig. 9 is a schematic structural view of a solenoid valve provided with a magnet fixing groove;

Figure 10 is a right side view of the solenoid valve;

Figure 11 is a partial enlarged view of Figure 9;

12 is a schematic diagram of the structure of the coil of Embodiment 2;

Figure 13 is a cross-sectional view of a typical solenoid valve.

Among them, the above drawings include the following reference signs:

1 valve body; 11 valve seat component; 111 base; second interface portion 1111; valve port 1112; valve cover 112; first interface portion 1121; plug-in portion 1122; sleeve 12; Second connection pipe 14; valve core 15; sealing part 151; moving iron core 16; static iron core 17; static iron core through hole part 171; elastic member 18; coil 2; coil body 21; coil body through hole part 215; skeleton 212 Winding 213; Encapsulation body 214; Lead 215; Magnet 22; Magnet through hole 221; Magnet upper 222; Magnet side 223; Magnet lower 224; Magnet lower body 2241; Part 2242; magnet fixing groove 225; coil fixing frame 3; valve body connecting part 31; coil connecting part 32; mating part 321; first positioning part 322; second positioning part 323; Part 41; buckle accommodating portion 42; first buckle accommodating portion 421; second buckle accommodating portion 422; buckle connecting portion 43; buckle contact portion 431; buckle fastening portion 432; first buckle fastening Portion 4321; second buckle fastening portion 4322; valve cavity A; first accommodating space B; second accommodating space C.

detailed description

In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Please refer specifically to Figures 1-11. Figure 1 is a cross-sectional view of the valve body of the solenoid valve of the present invention; Figure 2 is a schematic diagram of the solenoid valve with a coil dissected; Figure 3 is a schematic diagram of the valve body in Figure 2; Figure 4 is a diagram Fig. 5 is a schematic diagram of the structure of the magnetic conductor and the buckle in Fig. 4 before being assembled; Fig. 6 is a schematic diagram of the structure of the magnetic conductor and the buckle in Fig. 4 after being assembled; Fig. 7 is the solenoid valve of the present invention Fig. 8 is a bottom view of the solenoid valve in Fig. 7; Fig. 9 is a schematic structural diagram of a solenoid valve provided with a magnet fixing groove; Fig. 10 is a right side view of the solenoid valve; Fig. 11 is a partial enlarged view of Fig. 9 .

In the description of the embodiments of this application, unless expressly stipulated and limited otherwise, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; unless otherwise specified Or, the term "multiple" refers to two or more; the terms "connected", "fixed", etc. should be understood in a broad sense, for example, "connected" can be a fixed connection or a detachable connection, or Integral connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In the description of this specification, it should be understood that the terminology such as "上" and "下" described in the embodiments of this application are described from the perspective of the drawings, and should not be construed as referring to the embodiments of this application. limited. In addition, in the context, it should also be understood that when it is mentioned that an element is connected "on" or "under" another element, it can not only be directly connected to the other element "on" or "under", but also It is indirectly connected "on" or "under" another element through an intermediate element.

Please refer specifically to Figures 1-4. The solenoid valve provided in this embodiment mainly includes a valve body 1, a coil 2, a coil holder 3, and a fastener 4. The coil 2 mainly includes a coil body 21 and a conductive magnet 22, and the coil body 21 It includes a skeleton 212, a winding 213 wound on the skeleton 212, and an encapsulation body 214 that encloses the skeleton 212 and the winding 213. The winding 213 is connected with a lead wire 215. By controlling the power on and off of the coil body 21, the valve body 1 can be controlled. The valve core 15 (mentioned below) moves toward or away from the valve port 1112 (mentioned below), thereby closing or opening the valve port 1112.

1 specifically, the valve body 1 includes a valve seat member 11, a sleeve 12, a first connecting portion 13 and a second connecting portion 14; the valve seat member 11 includes a base 111 and a valve cover 112, and the base 111 has a first The second interface portion 1111 and the valve cover 12 include a first connecting portion 1121 and an inserting portion 1122; the sleeve 12 passes through the inserting portion 1122 and is fixedly connected to the inserting portion 1122; the first connecting portion 13 and the first interface 1121 In a fixed connection, the second connecting portion 14 and the second interface portion 1111 are fixedly connected; wherein the valve cover 112 is formed by a stamping process, and the base 111 is formed by a stamping process or a turning process. In the solenoid valve provided in this embodiment, a valve core 15, a moving iron core 16, a static iron core 17 and an elastic member 18 are arranged inside the valve seat part 11 and the sleeve 12; the moving iron core 16 is fixedly connected to the valve core 15; The iron core 17 is fixedly connected with the sleeve 12, one end of the elastic member 18 is against the movable iron core 16, and the other end against the static iron core 17; the static iron core 17 includes a static iron core through hole 171, and the valve core 15 penetrates the static iron core. The core through hole portion 171; the base 111 is provided with a valve port 1112, and the valve core 15 includes a sealing portion 151. In the axial position, the sealing portion 151 is located below the static iron core 17, and the sealing portion 151 can seal the valve port 1112.

As shown in Figure 1, the movable iron core 16 is fixedly connected to one end of the valve core 15 and installed inside the sleeve 12, the static iron core 17 is fixedly connected to the sleeve 12, and the static iron core 17 includes a valve core 15 for piercing. The moving iron core 16 is located above the static iron core 17 in the axial position. One end of the elastic member 16 is against the moving iron core 16, and the other end is against the static iron core 17, so that the moving iron When the core 16 and the static iron core 17 generate magnetic force, the magnetic force can drive the movable iron core 16 to move in the sleeve 12, so that the valve core 15 can overcome the elastic force of the elastic member 18 and move accordingly, so that the sealing portion 151 of the valve core 15 can be Seal the valve port 1112.

The connection arrangement of the valve core 15, the movable iron core 16, the static iron core 17, and the elastic member 18 inside the sleeve 12 has the advantages of simple structure and easy assembly.

The valve cover 112 is arranged to cover the base 111, and the valve seat member 11 defines a valve cavity A; part of the sleeve 12 extends into the valve cavity A.

Taking the first connecting pipe 13 as the medium inlet pipe and the second connecting pipe 14 as the medium outlet pipe as an example, when the solenoid valve is in the open state, the medium flows from the first connecting pipe 13 to the second connecting pipe 14. 121 can prevent the medium from impacting the sealing part 151 of the valve core 15 downward. Under the premise that the elastic coefficient of the elastic member 18 is the same, the solenoid valve can withstand a higher pressure difference of the medium, and the voltage of the coil 2 required to close the valve is also relatively Smaller.

In summary, the above-mentioned sleeve portion 121 can improve the characteristic index of the solenoid valve, and reduce the phenomenon that the sealing portion 151 of the valve core 15 moves toward the valve port 1112 under the impact of the medium, which causes the valve port 1112 to be abnormally blocked.

The outer casing of the sleeve 12 is fixedly sleeved with a coil 2. When the coil 2 is energized, an interactive magnetic force can be generated between the moving iron core 16 and the static iron core 17, so that the first moving iron core 16 can overcome the elastic force of the elastic member 18 It moves along the axial direction of the sleeve 12, thereby driving the valve core 15 to also overcome the elastic force of the elastic member 18 to move to the valve port 1112.

The specific working process of the solenoid valve provided in this embodiment may be as follows: when the coil 2 is energized, the moving iron core 16 moves toward the static iron core 17 under the action of electromagnetic force and drives the valve core 15 toward the direction close to the valve port 1112 Movement, the valve port 1112 is closed so that the first connecting portion 14 and the second connecting portion 15 are not connected; when the coil 2 is powered off, the moving iron core 16 is no longer subjected to electromagnetic force, so that the moving iron core 16 is in the elastic member 18 Moves away from the static iron core 17 and away from the valve port 1112 under the action of the elastic force, so that the first connecting portion 14 and the second connecting portion 15 are connected.

It is worth noting that the above description is only for the internal structure of a certain solenoid valve. It can be understood that the internal structure of the valve body 1 of the solenoid valve does not affect the way the valve body 1 is connected to the coil 2. Therefore, the valve body of the present invention The structure connecting 1 and coil 2 can also use other solenoid valves with different structures.

Please refer to FIGS. 4-6 specifically. The magnet 22 of this embodiment is bounded by the center line of the bent portion, and can be roughly divided into an upper magnet 222, a magnet side 223, and a magnet lower 224. In this embodiment The cross section of the magnetic conductor 22 is roughly in the shape of "匚". The magnetic conductor 22 is sleeved outside the coil body 21. It has the function of magnetic conductivity, which can make the magnetic field more concentrated to increase the magnetic force, and can relatively reduce the voltage of the coil 2. More energy saving and environmental protection.

In addition, the coil body 21 further includes a coil body through-hole portion 215, which is a through hole that penetrates the upper and lower surfaces of the coil body 21, and the conductor 22 includes a conductor through hole 221, and the conductor through hole 221 is The through holes passing through the upper and lower surfaces of the magnetic conductor 22. In this embodiment, the magnetic conductor 22 includes two through-hole portions 221, and the valve body 1 passes through the through-hole portion 221 of the magnetic conductor and the coil body from bottom to last. The through hole 215 finally penetrates through the through hole 221 of the magnetizer located above.

It is worth noting that the magnetic conductor 22 may also include only one through-hole portion 221 of the magnetic conductor, and the valve body 1 passes through the through-hole portion 221 of the magnetic conductor and the through-hole portion 215 of the coil body from bottom to last. The through-hole portion 221 of the magnetic conductor is provided, so the valve body 1 passes through the through-hole portion 221 of the magnetic conductor and the through-hole portion 215 of the coil body below, but does not penetrate above the magnetic conductor 22.

In addition, please refer to FIGS. 3-5. The solenoid valve of this embodiment includes a coil fixing frame 3 and a fastener 4.

3, the solenoid valve provided in this embodiment further includes a coil holder 3, the coil holder 3 includes a valve body connecting portion 31 and a coil connecting portion 32, the valve body connecting portion 31 is roughly circular, and it is sheathed on the valve The body 1 is fixedly connected to the valve body 1. The coil connecting portion 32 extends in a direction away from the center axis of the valve body 1. The valve body connecting portion 31 and the coil connecting portion 32 can be two parts fixedly connected, or one can be used. The components are integrally molded into the valve body connecting portion 31 and the coil connecting portion 32. In this embodiment, the number of coil connecting portions 32 is three. In practical applications, the number of coil connecting portions 32 can also be set to one or more than two (including two). In addition, the present invention does not specifically limit the width of the coil connecting portion 32. For example, when the number of the coil connecting portion 32 is set to one, the coil connecting portion 32 may be approximately 180° along the circumference of the valve body connecting portion 31. Of course, the present invention does not limit the number of mating parts on the coil connecting portion 32. For example, when the coil connecting portion 32 extends approximately 180° along the circumference of the valve body connecting portion 31, the coil connecting portion There is more space on 32 to provide multiple matching parts 321.

In the present application, the valve body connecting part 31 is roughly the part where the coil holder 3 is connected to the valve body 1, the coil connecting part 32 is roughly the part where the coil holder 1 and the coil 2 are connected, and the coil connecting part 32 and the valve body connecting part 31 There is no need to have clear boundaries.

In this embodiment, the valve body connecting portion 31 and the valve body 1 are fixedly connected by welding. Of course, the valve body 1 and the coil holder 3 can also be fixedly connected by interference fit, crimping, or the like.

Please refer specifically to Figures 4-5. The buckle 4 can be formed by a steel plate (or steel belt) with better elasticity through a stamping process. The buckle 4 roughly includes a buckle retaining portion 41, a buckle receiving portion 42, and a buckle. The connecting portion 43, the buckle connecting portion 43 and the conductor 22 are fixedly connected (the connection method will be mentioned later).

Please refer specifically to FIG. 11, the buckle retaining portion 41 is approximately located in the middle position of the buckle 4, the buckle retaining portion 41 can be formed by a stamping process so that the buckle has an upwardly convex structure. In addition, the buckle accommodating portion 42 includes a first buckle accommodating portion 421 and a second buckle accommodating portion 422. The first buckle accommodating portion 421 and the second buckle accommodating portion 423 are approximately respectively located on both sides of the buckle locating portion 41, and the first buckle A gap is provided between the accommodating portion 421 and the lower portion of the guide magnet 224, and the gap forms a first accommodating space B. Specifically, the first accommodating space B is in the axial direction, and the first buckle accommodating portion 421 faces the projection of the lower portion 224 of the guide magnet. To the lower part of the magnetic conductor 224, down to the space where the buckle 4 is located; the second buckle accommodating part 422 and the lower part of the magnetic conductor 224 are also provided with a gap, which forms a second accommodating space C, specifically, the second accommodating space C To be in the axial direction, the projection of the second buckle accommodating portion 422 toward the lower portion of the conductive magnet 224 is up to the lower portion of the conductive magnet 224 and down to the space where the buckle 4 is located; when the buckle connecting portion 43 is fixedly connected to the conductive magnet 22 , The buckle locking portion 41 protrudes toward the lower portion 224 of the conductive magnet relative to the buckle receiving portion 42.

The number of the buckle connecting portions 43 is two, the buckle connecting portions 43 are respectively located on both sides of the buckle 4, and the first buckle receiving portion 421 is closer to the buckle connecting portion 43 than the buckle locating portion 41 , The second buckle accommodating portion 422 is closer to the buckle connecting portion 43 than the buckle locating portion 41.

With the above arrangement, when the coil 2 and the valve body 1 need to be connected, it is only necessary to insert the valve body 1 through the conductive magnet through hole 221 and the coil body through hole 215, and then rotate the valve body 1 relative to the coil 2 to a certain extent. The angle is such that at least a part of the coil connecting portion 32 is located in the first accommodating space B and the second accommodating space C, and the snap-fitting portion 41 abuts the coil connecting portion 32, and the coil 2 is fixedly connected to the valve body 1.

Please refer to FIG. 11 specifically. In this embodiment, the minimum distance between the buckle portion 41 and the lower portion of the magnetizer 224 is D1. It can be understood that D1 should be greater than or equal to 0. Before the body 1 is fixed and assembled, the snap-fit portion 41 and the lower portion of the magnetizer 224 abut; when D1 is greater than 0, between the coil 2 and the valve body 1 are not fixedly assembled, the snap-fit portion 41 and the lower portion 224 of the magnet There is a booked distance.

In addition, the thickness of the position where the coil connecting portion 32 is to abut the buckle retaining portion 41 is D2. In order to better realize the abutment between the buckle retaining portion 41 and the coil connecting portion 32, D1 should be greater than or equal to D2. Here, the coil connecting portion 32 is intended to abut against the buckle retaining portion 41, which refers to the state before the coil connecting portion 32 and the buckle retaining portion 41 abut against each other.

Through the above arrangement, the snap-fitting portion 41 and the coil connecting portion 32 can be abutted, and the coil connecting portion 32 is at least partially located in the first accommodating space B and the second accommodating space C, and the coil holder 3 is fixedly connected to the valve body 1. The buckle 4 is fixedly connected to the magnet 22 so that the coil 2 is fixedly connected to the valve body 1.

In the solenoid valve of the present application, when the valve body 1 is inserted into the through-hole portion 221 of the conductor magnet and the through-hole portion 211 of the coil body, it is only necessary to rotate the coil 2 relative to the valve body 1, so that the coil connecting portion 32 and the buckle retaining portion 41 abut against each other. That is, the connection and assembly of the coil 2 and the valve body 1 can be realized, which is more convenient. When the coil 2 and the valve body 1 need to be separated, only the coil 2 needs to be rotated relative to the valve body 1, and the coil connecting portion 32 and the buckle When the blocking portion 41 has an offset state and changes to a non-offset state, the coil 2 can be separated from the valve body 1, and the operation is more convenient.

In addition, in this embodiment, in order to increase the effect of the connection between the coil 2 and the valve body 1, the coil connecting portion 32 of the present application further includes a matching portion 321, and the matching portion 321 takes the form of a notch.

Specifically, please refer to FIGS. 3 and 7-8. The coil connecting portion 32 of this embodiment further includes a first positioning portion 322 and a second positioning portion 323, and a gap is provided between the first positioning portion 322 and the second positioning portion 323. At this time, the first positioning part 322 and the second positioning part 323 define the mating part 321, that is, at least part of the first positioning part 322 and at least part of the second positioning part 323 constitute at least part of the mating part 321. In this embodiment In the example, a section of the first positioning portion 322 and the second positioning portion 323 respectively close to each other defines the mating portion 321.

When the coil 2 and the valve body 1 are assembled, the outer edge of the first positioning portion 322 or the second positioning portion 323 rotates to abut against the buckle clamping portion 41, and then applying force can cause the buckle clamping portion 41 to deform After the valve body 1 is rotated to a certain angle with respect to the coil 2 again, the buckle clamping portion 41 can abut against the first positioning portion 322 and the second positioning portion 323 to realize the clamping and fixing of the coil holder 3 and the buckle 4 .

With the above arrangement, at least part of the first positioning portion 322 is located in the first accommodating space B, at least part of the second positioning portion 323 is located in the second accommodating space C, and the first positioning portion 322, the second positioning portion 323 and the buckle The detent portion 41 is offset.

At this time, the valve body 1 and the coil 2 are in an assembled state, and there is an overlap between the mating portion 321 and the snap-fit portion 41 in the projection passing through the center axis of the valve body 1, that is, at least part of the snap-fit portion 41 is located In the space of the mating part 321, the buckle and clamping part 41 abuts against the mating part 321.

With the above arrangement, if the valve body 1 and the coil 2 are to be separated from each other in the assembled state, when the valve body 1 is rotated relative to the coil 2, the elastic force of the buckle 4 must be overcome, so that the buckle retaining portion 41 is in the valve The body 1 deforms in the axial direction, which must overcome the frictional force between the first positioning portion 322 or the second positioning portion 323 (depending on the direction in which the valve body 1 rotates relative to the coil 2) and the buckle retaining portion 41, It is relatively difficult. Therefore, the structure in which the valve body 1 and the coil 2 are connected has better connection effect and connection reliability.

In the above structure in which the valve body 1 and the coil 2 are connected, the distance between the position where the first positioning portion 322 and the buckle locking portion 41 abut and the side of the first positioning portion 322 relatively close to the lower part 224 of the magnetizer is D2, the buckle card The distance between the position 41 and the lower part of the magnetizer is D1. At this time, it is still satisfied that D1 is less than or equal to D2.

Of course, the mating part 321 of this embodiment can also be in the form of a through hole or a groove. When the mating part 321 adopts the above form and the valve body 1 and the coil 2 are fixedly connected, the mating part 321 and the buckle clamping part 41 pass through The projection of the center axis of the valve body 1 overlaps.

Please refer specifically to Figs. 7-8. The arrangement of the holes or grooves can be used for the snap-fit portion 41 to abut against it, and the snap-fit portion 41 is at least partially located in the space of the through hole or groove. When the valve body 1 and the coil 2 are assembled, they are separated. When the valve body 1 is rotated relative to the coil 2, the elastic force of the buckle 4 must also be overcome, so that the buckle retaining portion 41 is in the axial direction of the valve body 1. The direction is deformed so that the buckle retaining portion 41 slides out of the above through hole or groove, which must overcome the first positioning portion 322 or the second positioning portion 323 (depending on the direction in which the coil 2 rotates relative to the valve body 1) The frictional force between the buckle and the buckling portion 41 is relatively difficult. Therefore, the structure in which the valve body 1 and the coil 2 are connected has a better connection effect and connection reliability.

Please refer to FIG. 6 specifically. In this embodiment, the buckle connection portion 43 is fixedly connected to the magnet 22. Specifically, the buckle connection portion 43 includes a buckle contact portion 431 and a buckle fastening portion 432. 4 Before fixing and assembling the magnet 22, the buckle contact part 431 of the buckle 4 can be first contacted with the lower end surface of the lower part 224 of the magnet, and then the two ends of the buckle 4 along the side of the lower part 422 of the magnet The end is flanged and riveted to make the buckle 4 hug the upper surface of the lower part 224 of the magnetic conductor.

At this time, the snap-fastening portion 432 includes a first snap-fastening portion 4321 and a second snap-fastening portion 4322, the first snap-fastening portion 4321 is located at the side end of the lower portion 224 of the magnet, and the second snap-fastening The fixing portion 4322 is bent relative to the first buckle fastening portion 4321 toward a direction close to the lower portion 224 of the magnetizer. Moreover, it can be directly known in conjunction with FIGS. 2 to 4 that the distance between the snap contact portion 431 and the axis of the valve body 1 is not less than the distance between the coil connecting portion 32 and the axis of the valve body 1.

The arrangement of the buckle fastening portion 432 can make the buckle 4 and the conductive magnet 22 be fixedly connected by riveting, which is relatively reliable.

In order to further fasten the buckle 4 on the magnet 22, a welding operation can be used between the buckle fastening portion 432 and the magnet 22. Specifically, the first buckle fastening portion 4321 and/or the second The spot welding operation between the buckle fastening portion 4322 and the magnet 22 can enhance the fastening effect of the buckle 4 and the magnet 33.

It is worth noting that XX and XX described in this specification are fixedly connected in E mode, and it is not limited to only one connection mode (E) between XX and XX, but it should be understood that the connection mode between XX and XX includes E mode. For example, in this embodiment, the buckle 4 and the magnet 22 can be fixedly connected by riveting first, and then fixedly connected by welding. This connection method is in parallel with the expression "the buckle and the magnet 22 are fixed by riveting". Do not conflict.

Please refer to Figures 5-8. In order to reduce the displacement of the buckle 4 along the direction of escaping from the lower part of the magnet 22 after the fastener 4 is fixedly connected to the magnet 22, the lower part of the magnet 22 is provided in this embodiment 224 includes a magnet lower body portion 2241 and a magnet lower extension 2242. The magnet lower extension 2242 is located on the side where the first buckle fastening portion 4321 escapes. In this embodiment, the magnet lower extension 2242 runs along The side surface of the lower body portion 2241 of the magnetizer extends, and when the buckle 4 is to be displaced toward the direction in which the lower portion of the magnetizer 224 is pulled out, the first buckle fastening portion 4321 can abut against the lower extension portion 2242 of the magnetizer, and can be as far as possible To avoid the situation that the fastener 4 is detached from the lower part 224 of the magnetic conductor, and at the same time limit the displacement of the fastener 4 relative to the lower part 224 of the magnetic conductor.

Please refer to FIG. 11, after the buckle 4 and the magnet 33 are assembled and fixed, there is a certain gap D3 between the buckle accommodating portion 42 and the lower end surface of the lower portion 224 of the magnet. The gap D3 can be set to be greater than or equal to the coil connecting portion The thickness of 32, through the above setting, can facilitate the assembly of the coil 2 and the valve body 1, and the coil connecting portion 32 of the coil holder 3 can be easily transferred into the first accommodating space B or the second accommodating portion C, so that the coil 2 The assembly with the valve body 1 is more convenient.

Please refer specifically to Figures 9-10. In this embodiment, the magnet 22 further includes a magnet fixing groove 225, which is located at the lower part 224 of the magnet and penetrates and connects to the lower part 224 of the magnet. The upper and lower surfaces, and the second buckle fastening portion 4322 is further bent toward the magnet fixing groove 225 so that the second buckle fastening portion 4322 is at least partially located in the space in the magnet fixing groove 225.

Through the arrangement of the magnet positioning groove 225 and the second buckle fastening portion 4322, a fixed position of the magnet 22 and the buckle 4 can be further increased, so that the connection between the buckle 4 and the magnet 22 is stronger, and further The connection quality and reliability of the coil 2 and the valve body 1 can be increased, and the fastening effect of the fastener 4 can be further strengthened.

Example 2

Please refer specifically to FIG. 12, which is a schematic diagram of the structure of the coil of the second embodiment; the structure of the magnet 22 of the coil 2 is slightly different from the structure of the magnet 22 of the first embodiment. The magnet 22 of this embodiment includes two magnet side parts 223. When viewed from the direction in which the coil body 21 is embedded in the magnet 22, the cross section of the magnet 22 is roughly in the shape of a “mouth”. In this embodiment, the buckle contact portion 431 of the buckle member 4 is in contact with the underside of the lower portion of the conductive magnet 224, and then the buckle fastening portions 432 at both ends of the buckle member 4 are flanged, bent, and riveted. The first buckle fastening portion 4321 and the second buckle fastening portion 4322 are formed, so that the first buckle fastening portion 4321 is located at the outer end of the lower portion 224 of the magnetizer, and the second buckle fastening portion 4322 is close to the magnetizer. The upper end surface of the lower part 224 realizes the fixed connection between the magnet 22 and the buckle 4 in this way.

In order to further fasten the buckle 4 on the magnet 22, a welding operation can be used between the buckle fastening portion 432 and the magnet 22. Specifically, the first buckle fastening portion 4321 and/or the second The spot welding operation between the buckle fastening portion 4322 and the magnet 22 can enhance the fastening effect of the buckle 4 and the magnet 22.

The above descriptions are only preferred embodiments of this application, and are not intended to limit this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in this application Within the scope of protection.

Claims

A solenoid valve, comprising: a valve body (1) and a coil (2);

The coil (2) includes a coil body (21) and a magnetic conductor (22), the coil body (21) includes a coil body through hole portion (211), and the magnetic conductor (22) includes a magnetic conductor through hole portion ( 221), the valve body (1) penetrates the through-hole portion (221) of the magnetic conductor and the through-hole portion (211) of the coil body, and the magnetic conductor includes a lower portion (224) of the magnetic conductor;

It is characterized in that it also includes a coil fixing frame (3) and a fastener (4);

The coil fixing frame (3) includes a coil connecting portion (32), and the coil fixing frame (3) is fixedly connected to the valve body (1);

The buckle (4) includes a buckle connecting portion (43), the buckle connecting portion (43) is fixedly connected to the conductive magnet (22); the buckle (4) includes a buckle receiving portion (42), the buckle accommodating portion (42) includes a first buckle accommodating portion (421) and a second buckle accommodating portion (422); the buckle (4) includes a buckle locating portion (41) ), the buckle locking portion (41) protrudes toward the lower portion (224) of the conductor magnet relative to the buckle accommodating portion (42);

The buckle positioning portion (41) and the coil connection portion (32) can be abutted to make the coil (2) and the valve body (1) fixedly connected.
The solenoid valve according to claim 1, characterized in that it comprises two buckle connection parts (43), and the buckle connection parts (43) are respectively located on both sides of the buckle member (4), The first buckle accommodating portion (421) is closer to the buckle connecting portion (43) than the buckle locating portion (41), and the second buckle accommodating portion (422) is relatively close to the buckle connecting portion (43). The buckle locating portion (41) is closer to the buckle connecting portion (43).
The solenoid valve according to claim 1 or 2, further comprising a first accommodating space (B) and a second accommodating space (C), the first buckle accommodating portion (421) and the conductive magnet The lower part (224) forms the first accommodating space (B), the second buckle accommodating part (42) and the lower part (224) of the conductor magnet form the second accommodating space (C),

In the assembled state of the valve body (1) and the coil (2), the coil connecting portion (32) is at least partially located in the first accommodation space (B) and the second accommodation space (C);
The solenoid valve according to claim 3, characterized in that, in the state where the valve body (1) and the coil (2) are assembled, the buckle clamping portion (41) is away from the conductor magnet The distance between the lower part (224) is D1, the distance between the position where the coil connecting part (32) and the buckle clamping part (41) abut and the lower part (224) of the permeable magnet is D2, the D1≥D2 .
The solenoid valve according to claim 3, wherein the distance between the buckle accommodating portion (42) and the lower portion (224) of the magnetic conductor is D3, and the D3 is greater than or equal to the thickness of the coil connecting portion.
The solenoid valve according to any one of claims 1-5, wherein the coil connecting portion (32) comprises a mating part (321), and the mating part (321) is a through hole or a groove or a notch;

In the assembled state of the valve body (1) and the coil (2), the mating portion (321) and the buckling portion (41) pass through the center axis of the valve body (1) There is an overlapped part in the projection, and the snap-fitting portion (41) abuts against the mating portion (321).
The solenoid valve according to claim 6, characterized in that the mating portion (321) is a gap, the coil connecting portion further comprises a first positioning portion (322) and a second positioning portion (323), the first A positioning portion (322) is at least partially located in the first accommodating space (B), the second positioning portion (323) is at least partially located in the second accommodating space (C), and the first positioning portion (322) is connected to the The second positioning portion (323) defines the mating portion (321), and the first positioning portion (322) and the second positioning portion (323) abut the buckle positioning portion (41).
The solenoid valve according to any one of claims 1-5 and 6, characterized in that the buckle connecting portion (43) comprises a buckle contact portion (431) and a buckle fastening portion (432), the The buckle contact portion (431) is in contact with the lower portion (224) of the conductor magnet, and the buckle fastening portion (432) includes a first buckle fastening portion (4321) and a second buckle fastening portion (4322) , The first buckle fastening portion (4321) is located outside the lower part (224) of the magnetizer, and the second buckle fastening portion (4322) is opposite to the first buckle fastening portion (4321). ) Bend toward the direction close to the lower part (224) of the magnetizer, the distance between the buckle contact portion (431) and the axis of the valve body (1) is not less than the distance from the coil connecting portion (32) to the The distance of the axis of the valve body (1).
The solenoid valve according to claim 8, characterized in that the magnetizer (22) further comprises a magnetizer fixing slot (225), and the magnetizer fixing slot (225) is at least partially located at the lower portion (224) of the magnetizer. ), the magnetic conductor fixing groove (225) is connected to the upper and lower surfaces of the lower portion (224) of the magnetic conductor, and the second buckle fastening portion (432) is at least partially located in the magnetic conductor fixing groove (225).
The solenoid valve according to claim 6, characterized in that the lower part (224) of the permeable magnet comprises a lower body part (2241) of the permeable magnet and a lower extension part (2242) of the permeable magnet, and the lower extension part (2242) of the permeable magnet extends along the Along the side of the lower body part (2241) of the magnetizer, the first buckle fastening part (4321) can abut against the lower extension part (2242) of the magnetizer.
The solenoid valve according to any one of claims 1 to 5, characterized in that the snap connection portion (43) and the conductive magnet (22) are fixedly connected by welding or threaded connection.