WO2020045471A1

WO2020045471A1 - Solenoid valve

Info

Publication number: WO2020045471A1
Application number: PCT/JP2019/033641
Authority: WO
Inventors: 寛宍戸
Original assignee: いすゞ自動車株式会社
Priority date: 2018-08-30
Filing date: 2019-08-28
Publication date: 2020-03-05
Also published as: JP7153222B2; CN112601907A; CN112601907B; JP2020034101A

Abstract

A main stop valve is formed by affixing a core member to a housing which is provided in a fuel supply passage and affixing a coil member, upper and lower cover plates, and a coil case to the core member. A flange is provided at the lower end of a guide pipe located at the core base end of a core member. The entire circumferential gap between mutually adjacent regions of the upper cover plate and the coil member is sealed by an adhesive. The entire circumferential gap between mutually adjacent regions of the lower cover plate and the coil member is sealed by an adhesive. The entire circumferential gap between mutually adjacent regions of the lower cover plate and the flange is sealed by an adhesive.

Description

solenoid valve

The present disclosure relates to an electromagnetic valve that opens and closes a port provided in a fluid flow passage.

Patent Document 1 describes an electromagnetic on-off valve provided between a gas container and a pressure reducing valve. In the solenoid on-off valve, a cylindrical sleeve containing a fixed core and a plunger protrudes outward. The cylindrical sleeve is screwed and fixed to the opening / closing valve mounting hole of the housing with a fixing cylinder. An electromagnetic device is fitted around the cylindrical sleeve. The electromagnetic device is provided with two engaging claws forming an engaging portion. On the other hand, a flange constituting a locking portion is provided on the outer end of the fixing cylinder so as to protrude radially outward. Insertion grooves are formed in the flange at two locations on the periphery. After the engaging claw of the electromagnetic device passes through the insertion groove, the engaging claw is locked to the flange by rotating the electromagnetic device. Between the fixing cylinder and the electromagnetic device, a pressing ring is externally fitted to the cylindrical sleeve so as to be movable in the axial direction, and is pressed by an urging spring toward the electromagnetic device. The electromagnetic device is pressed in the direction of detachment via the pressing ring by the elastic pressure of the biasing spring, whereby the engaging claw is held on the flange. The electromagnetic device is configured to be easily detachable from the housing.

Japanese Patent Application Laid-Open No. 2009-174677

In the electromagnetic on-off valve (electromagnetic valve) described in Patent Document 1, an electromagnetic device around a cylindrical sleeve (guide pipe) containing a plunger or the like is pressed by an urging spring in a direction away from a flange of a fixing cylinder. Therefore, there is a possibility that a gap may occur between the flange and the electromagnetic device, and when water is applied to the solenoid valve, water may enter the guide pipe side from the gap between the flange and the electromagnetic device. There is. In particular, in a natural gas vehicle running in a cold region or the like, water containing a snow-melting agent sprayed on a road hangs on an electromagnetic valve (a main stop valve or the like) provided in a gas supply path from a gas tank to an engine, causing the snow-melting agent to flow. May be deposited on the outer surface of the guide pipe to corrode the guide pipe. Since a large pressure acts on the guide pipe from the inside, if the guide pipe is corroded, stress corrosion cracking may occur in the guide pipe and the guide pipe may be damaged.

目的 An object of the present disclosure is to provide a solenoid valve capable of preventing breakage of a guide pipe.

A first aspect of the present disclosure is an electromagnetic valve that opens and closes a port provided in a fluid flow passage, and includes a cylindrical coil member, a first plate, a second plate, a first core portion, and a second core portion. Prepare. The coil member defines an internal space extending in a predetermined direction. The first plate is a magnetic body that has an opening that communicates with the internal space and is disposed on one end side of the coil member in the predetermined direction. The second plate is a magnetic body disposed on the other end side of the coil member in the predetermined direction. The first core portion is a magnetic body disposed on the other end side in the internal space of the coil member. A second core portion, a cylindrical guide pipe extending in the predetermined direction, a flange-shaped flange portion projecting radially outward from an entire peripheral area of an outer peripheral surface of the one end of the guide pipe, and a guide pipe. A plunger that is disposed inside and is slidably supported by the guide pipe, and a valve portion that is provided at the one end of the plunger. The flange is inserted into the internal space on one end side of the first core from the opening of the one plate, and the flange is disposed on the one end side of the first plate. When the first core is excited by the magnetic field generated by the coil member, the plunger moves toward the first core, and the valve opens the port of the fluid flow passage. Between the adjacent areas of at least one set of the second plate, the coil member, the first plate, the first core, the guide pipe, and the flange having at least one adjacent area, the internal space of the coil member is Sealed over the entire circumference centered on the shaft.

In the above-described configuration, at least one set of members having adjacent regions among the second plate, the coil member, the first plate, the first core portion, the guide pipe, and the flange portion (hereinafter, referred to as an adjacent region) ) Is sealed over the entire circumference around the axis of the internal space of the coil member. For this reason, for example, when sealing is performed between the adjacent regions of the second plate and the coil member, between the adjacent regions of the coil member and the first plate, or between the adjacent regions of the first plate and the flange portion, Since it is possible to prevent water from intruding radially inward from between adjacent regions of the pair of members, corrosion of the guide pipe due to water intrusion can be prevented, and damage to the guide pipe (for example, stress Corrosion cracking) can be prevented. When the space between the first core portion and the adjacent region of the coil member is sealed, water is prevented from entering the one end side from between the adjacent regions (between the guide pipe and the adjacent region of the coil member). Therefore, corrosion of the guide pipe due to intrusion of water can be prevented, and breakage of the guide pipe can be prevented. In addition, when the space between the adjacent area of the guide pipe and the first plate or the area between the adjacent area of the guide pipe and the coil member is sealed, it is possible to prevent the sealed portion from being wet, Water can be prevented from entering the one end side or the other end side from the sealed portion, so that corrosion of the guide pipe due to entry of water can be prevented, and damage to the guide pipe can be prevented. be able to.

A second aspect of the present disclosure is the solenoid valve according to the first aspect, wherein the at least one pair of members is a first plate and a flange.

In the above configuration, since the space between the first plate and the adjacent region of the flange portion is sealed over the entire peripheral region, intrusion of water from between the first plate and the flange portion to the outer peripheral surface side of the guide pipe is prevented. can do. Therefore, corrosion of the guide pipe due to intrusion of water from between the first plate and the flange can be prevented, and damage to the guide pipe can be prevented.

A third aspect of the present disclosure is the solenoid valve according to the first aspect or the second aspect, wherein the space between the adjacent regions of the at least one set of members is applied to the adjacent region. Sealed with adhesive.

In the above configuration, the area between the adjacent areas of at least one set of members is sealed by the adhesive applied to the adjacent area, so that, for example, the number of parts is reduced as compared with a case where a thin plate-shaped seal member or the like is provided. be able to.

According to the solenoid valve of the present disclosure, it is possible to prevent the guide pipe from being damaged.

FIG. 1 is a schematic explanatory diagram of a vehicle according to an embodiment of the present disclosure. FIG. 2 is an exploded view of the main stop valve of FIG. FIG. 3 is a schematic sectional view of the main stop valve of FIG.

Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings. In the following description, the up-down direction corresponds to the up-down direction in FIGS.

As shown in FIG. 1, a main stop valve (solenoid valve) 10 according to the present embodiment is applied to a vehicle 1 using natural gas (for example, compressed natural gas (CNG)) as a fuel, and a natural gas. Is provided in a fuel supply path (fluid flow path) 4 from the fuel container 2 to the engine 3 for storing the fuel in a high pressure state. The natural gas flows from the fuel container 2 through the fuel supply path 4 to the regulator (reducing valve) 5 via the main stop valve 10, and is regulated (reduced in pressure) by the regulator 5 before being supplied to the engine 3. Is done. When the engine 3 is started, the main stop valve 10 opens a downstream port (port) 6b (described later) of the fuel supply path 4 to allow natural gas to flow downstream (toward the regulator 5). When the engine 3 is stopped, the downstream port 6b of the fuel supply path 4 is closed to shut off the flow of natural gas to the downstream side.

As shown in FIGS. 2 and 3, the main stop valve 10 is a pilot-type valve having a double valve structure having a main valve (valve portion) 11 and a pilot valve 12, and a housing provided in the fuel supply passage 4. 13 is formed by fixing the core member 14 to the core member 14, and fixing the coil member 15, the upper and lower cover plates (second plate, first plate) 16, 17 and the coil case 18 to the core member 14. You.

The housing 13 is a structure that partitions the main valve chamber 19 therein, and is connected to the gas flow pipe 7a on the upstream side (the fuel container 2 side) and the gas flow pipe 7b on the downstream side (the regulator 5 side). You. The housing 13 is formed with an opening 20 that opens the main valve chamber 19 toward the other end in the predetermined direction (upward in the vertical direction in FIGS. 2 and 3). On the inner peripheral surface 13a of the main valve chamber 19 extending downward from the opening 20, a female screw (not shown) that can be screwed with a male screw of a core base end portion 21 of the core member 14, which will be described later, is formed. Below the main valve chamber 19, two

ports

6a, 6b are open. Of the two

ports

6a, 6b, one port 6a is an upstream port 6a, which communicates with the fuel supply passage 4 inside the gas flow pipe 7a on the upstream side, and the other port 6b is a downstream port 6b. Then, it communicates with the fuel supply path 4 inside the gas flow pipe 7b on the downstream side.

The core member 14 is a vertically long member, and includes a lower (one end side in a predetermined direction) core base end portion (second core portion) 21 and an upper side fixed to the core base end portion 21. And a lower end of the core base end 21 is fixed to the housing 13.

The core base end 21 includes a cylindrical guide pipe 23 extending vertically, a flange 24 provided at a lower end of the guide pipe 23, a plunger 25 disposed in the guide pipe 23, and a lower side of the plunger 25. Main valve 11. The guide pipe 23 and the flange portion 24 are integrally formed of a non-magnetic material (for example, stainless steel). The guide pipe 23 has an inner peripheral surface 23b that defines a through hole 26 that penetrates vertically. The flange portion 24 is formed in a plate shape that protrudes radially outward from the entire circumferential direction of the outer peripheral surface 23a of the lower end portion of the guide pipe 23 in a flange shape, and has an approximately circular outer shape. In an area of the outer peripheral surface 23a of the guide pipe 23 below the flange portion 24, a male screw (not shown) that can be screwed with a female screw of the inner peripheral surface 13a of the housing 13 is formed. By screwing a male screw at the lower end of the guide pipe 23 into a female screw on the inner peripheral surface 13 a of the housing 13, the core base end 21 of the core member 14 is fixed to the housing 13. When the core base end 21 is fixed to the housing 13, the lower end surface of the core base end 21 partitions the upper part of the main valve chamber 19, and the lower surface 24 a of the flange portion 24 comes into surface contact with the upper surface 13 b of the housing 13. I have. The plunger 25 is a magnetic body that is disposed in the through hole 26 of the guide pipe 23 and is slidably supported on the inner peripheral surface 23b of the guide pipe 23, and has the pilot valve 12 at its lower end integrally. The main valve 11 has a pilot passage 28 that penetrates in a vertical direction, is disposed below the plunger 25 in a through hole 26 of the guide pipe 23, and is slidably supported by an inner peripheral surface 23b of the guide pipe 23. , Project downward from the through hole 26 of the guide pipe 23. The main valve 11 is connected to the plunger 25 with a pin 27 provided with play up and down. The pilot valve 12 at the lower end of the plunger 25 can open and close the pilot port 29 at the upper end of the pilot passage 28 of the main valve 11 by moving the plunger 25 up and down. The lower end surface of the main valve 11 can open and close the downstream port 6b of the main valve chamber 19 by moving the main valve 11 in the vertical direction.

The core distal end portion 22 is a substantially columnar magnetic body extending upward continuously from the upper end of the guide pipe 23 of the core base end portion 21, and is fixed to the upper end portion of the guide pipe 23. The outer diameter of the core tip 22 is substantially the same as the outer diameter of the guide pipe 23 at the core base 21. A bolt 30 is provided at the upper end of the core tip 22. The bolt portion 30 protrudes upward from the upper surface 22 b of the core tip portion 22 along the axis of the core member 14. With the core tip 22 fixed to the guide pipe 23, the core tip 22 is located above the plunger 25. A spring 31 is provided between the core tip 22 and the plunger 25, and the spring 31 constantly urges the plunger 25 downward from the core tip 22.

The coil member 15 is a cylindrical electromagnetic coil extending in the vertical direction, and is formed by winding a coil body 33 around a coil bobbin 32 and covering the outer periphery thereof with a resin covering portion 34. The inner peripheral surface 15a of the coil member 15 defines an internal space 35 extending in the up-down direction. Part of the region of the guide pipe 23 of the core distal end portion 22 and the core proximal end portion 21 of the core member 14 is inserted into the internal space 35. The inner diameter of the coil member 15 is such that, when the core member 14 is inserted into the inner space 35 of the coil member 15, the inner peripheral surface 15 a of the coil member 15 is It is formed in a size that makes contact. The upper surface 37 of the coil member 15 is disposed on substantially the same plane as the upper surface 22b of the core tip 22. The upper and

lower cover plates

16 and 17 which become magnetic circuits when the coil body 33 is energized are fixed to the upper surface 37 and the lower surface 38 of the coil member 15. In the present embodiment, the coil member 15 is inserted into the internal space 35 with the upper and

lower cover plates

16 and 17 fixed to and integrated with the upper surface 37 and the lower surface 38 of the coil member 15. Fixed.

The upper cover plate (second plate) 16 of the upper and

lower cover plates

16 and 17 is an annular magnetic plate having an opening 36 that allows the bolt portion 30 of the core tip 22 to be inserted. Then, it is fixed to the upper surface 37 of the coil member 15 and the upper surface 22b of the core tip portion 22 by an adhesive 39 (for example, an adhesive of an acrylic modified silicone resin). The adhesive 39 is applied to at least one of the upper surface 22b of the core distal end portion 22 and the upper surface 37 of the coil member 15 or the lower surface 16a of the upper cover plate 16 with the axis 40 of the internal space 35 of the coil member 15 (one point in FIG. The coating is applied over the entire circumferential area around the center line (indicated by a chain line 40) (hereinafter simply referred to as the circumferential direction). In other words, a region between the upper cover plate 16 and the coil member 15 adjacent to each other (hereinafter, referred to as an adjacent region) is sealed by the adhesive 39 over the entire circumferential region, and the upper cover plate 16 The area between the area 16 and the area adjacent to the core tip 22 is sealed with the adhesive 39 over the entire circumferential area. With the upper cover plate 16 fixed to the coil member 15 and the core tip 22, the opening 36 of the upper cover plate 16 communicates with the internal space 35 of the coil member 15. FIG. 3 shows the adhesive 39 for easy understanding.

The lower cover plate (first plate) 17 of the upper and

lower cover plates

16 and 17 is an annular magnetic plate, and has an opening 41 that allows the core member 14 to pass therethrough. 15 is fixed to the lower surface 38 by an adhesive 42 (for example, an adhesive of an acrylic modified silicone resin). The adhesive 42 is applied to at least one of the upper surface 17a of the lower cover plate 17 and the lower surface 38 of the coil member 15 over the entire circumferential area. That is, the area between the lower cover plate 17 and the adjacent area of the coil member 15 is sealed by the adhesive 42 over the entire circumferential area in the circumferential direction. With the lower cover plate 17 fixed to the coil member 15, the opening 41 of the lower cover plate 17 communicates with the internal space 35 of the coil member 15. FIG. 3 shows the adhesive 42 for easy understanding.

The coil member 15 is fixed to the core member 14 with the upper and

lower cover plates

16 and 17 fixed to the upper surface 37 and the lower surface 38 of the coil member 15. When the coil member 15 is fixed to the core member 14, an area above the flange portion 24 of the core member 14 is moved from the opening 41 of the lower cover plate 17 to the internal space 35 of the coil member 15. Then, the lower surface 17b of the lower cover plate 17 and the upper surface 24b of the flange portion 24 of the core member 14 are fixed with an adhesive 43 (for example, an acrylic-modified silicone resin adhesive). The adhesive 43 is applied to at least one of the lower surface 17b of the lower cover plate 17 and the upper surface 24b of the flange portion 24 of the core member 14 over the entire circumferential area. That is, the area between the lower cover plate 17 and the area adjacent to the flange portion 24 is sealed by the adhesive 43 over the entire circumferential area. With the coil member 15 and the upper and

lower cover plates

16 and 17 fixed to the core member 14, the inner peripheral surface 15 a of the coil member 15 is attached to the outer peripheral surface 22 a of the core tip 22 and the outer peripheral surface 23 a of the guide pipe 23. Approach or touch. FIG. 3 shows the adhesive 43 for easy understanding.

The coil case 18 is a case formed of a magnetic material. The coil case 18 includes a disc-shaped upper plate portion 44 that covers the upper cover plate 16 from above, and a coil member 15 and the lower cover plate 17 that are arranged radially outward. It has a side plate part 45 that covers it and forms a magnetic circuit when the coil body 33 is energized. An opening 46 is formed in the upper plate portion 44 to allow the bolt portion 30 of the core distal end portion 22 to pass therethrough. The side plate portion 45 is formed in a substantially cylindrical shape extending downward from the outer peripheral edge of the upper plate portion 44. The coil case 18 covers the coil member 15 fixed to the core member 14 and the upper and

lower cover plates

16 and 17 from above, and inserts the bolt 30 of the core tip 22 into the opening 46 of the upper plate 44. Then, the nut 47 is fixed to the bolt portion 30 by screwing it.

In the main stop valve 10 configured as described above, the area between the adjacent areas of the upper cover plate 16 and the coil member 15 is sealed by the adhesive 39 over the entire circumferential area in the circumferential direction. Water can be prevented from entering radially inward from between the lower surface 16a of the plate 16 and the upper surface 37 of the coil member 15. In addition, the space between the upper cover plate 16 and the area adjacent to the core tip 22 is sealed by the adhesive 39 over the entire circumferential area, so that the lower surface 16a of the upper cover plate 16 and the core tip 22 are sealed. Can be prevented from entering between the upper surface 22b and the inner side in the radial direction. Therefore, between the outer peripheral surface 22 a of the core distal end portion 22 and the inner peripheral surface 15 a of the coil member 15, and between the outer peripheral surface 23 a of the guide pipe 23 of the core base end portion 21 and the inner peripheral surface 15 a of the coil member 15. Of the guide pipe 23 can be prevented, and corrosion of the guide pipe 23 due to water intrusion can be prevented, and stress corrosion cracking of the guide pipe 23 ( Breakage) can be prevented.

Further, the space between the lower cover plate 17 and the area adjacent to the coil member 15 is sealed by the adhesive 42 over the entire circumferential area, so that the upper surface 17a of the lower cover plate 17 and the coil member 15 are sealed. Can be prevented from entering the radially inward direction from between the lower surface 38 and the inner surface. This prevents water from entering from between the lower cover plate 17 and the coil member 15 to between the outer peripheral surface 23a of the guide pipe 23 of the core base 21 and the inner peripheral surface 15a of the coil member 15. Therefore, it is possible to prevent the guide pipe 23 from being wet by water and to prevent corrosion of the guide pipe 23 due to intrusion of water, and to prevent stress corrosion cracking (breakage) of the guide pipe 23.

In addition, the space between the lower cover plate 17 and the area adjacent to the flange portion 24 is sealed by the adhesive 43 over the entire circumferential area in the circumferential direction, so that the lower surface 17b of the lower cover plate 17 and the flange portion 24 are sealed. Can be prevented from entering between the upper surface 24b and the inner side in the radial direction. For this reason, it is possible to prevent water from entering from between the lower cover plate 17 and the flange portion 24 to between the outer peripheral surface 23a of the guide pipe 23 of the core base end portion 21 and the inner peripheral surface 15a of the coil member 15. Therefore, it is possible to prevent the guide pipe 23 from being wet by water and to prevent corrosion of the guide pipe 23 due to intrusion of water, and to prevent stress corrosion cracking (breakage) of the guide pipe 23.

In addition, the adjacent areas of the above members (upper cover plate 16, coil member 15, lower cover plate 17, core tip 22, and flange 24) are sealed with

adhesives

39, 42, and 43, respectively. For example, the number of parts can be reduced as compared with a case where a thin plate-shaped seal member or the like is provided between the adjacent regions of the above members.

In the present embodiment, the area between the upper cover plate 16, the coil member 15, the lower cover plate 17, the core tip 22, and the area adjacent to the flange 24 is sealed. There is no limitation, and at least one set of members having adjacent regions among the upper cover plate 16, the coil member 15, the lower cover plate 17, the core tip 22, the guide pipe 23, and the flange 24 is adjacent. It is only necessary to seal between the regions. For example, among the upper cover plate 16, the coil member 15, the lower cover plate 17, the core tip portion 22, the guide pipe 23, and the flange portion 24, between the regions adjacent to the lower cover plate 17 and the flange portion 24. Only the seal may be sealed. In this case, since the portion covered by the coil case 18 can prevent water from entering the guide pipe 23 side by the coil case 18, the lower cover plate 17 and the flange portion 24 which are not covered by the coil case 18 can be prevented. By sealing at least between the adjacent areas, it is possible to prevent water from entering the guide pipe 23 together with the coil case 18, prevent corrosion of the guide pipe 23, and cause stress corrosion cracking (breakage) of the guide pipe 23. Can be prevented.

Further, in the case of sealing between the adjacent area between the guide pipe 23 and the lower cover plate 17 or between the adjacent area between the guide pipe 23 and the coil member 15, water is prevented from being applied to the sealed portion. In addition, since water can be prevented from entering above or below the sealed portion, corrosion of the guide pipe 23 due to entry of water can be prevented, and stress corrosion cracking of the guide pipe 23 can be prevented. (Breakage) can be prevented.

Further, in the present embodiment, the bolt portion 30 is provided at the core tip portion 22 and the opening 36 is provided in the upper cover plate 16 to allow the bolt portion 30 of the core tip portion 22 to be inserted. May not be provided.

In the present embodiment, the coil member 15 is fixed to the core member 14 in a state where the upper and

lower cover plates

16 and 17 are fixed to the upper surface 37 and the lower surface 38 of the coil member 15. However, the present invention is not limited to this. Instead, for example, first, the lower cover plate 17 is fixed to the core member 14, then the coil member 15 is fixed to the lower cover plate 17, and then the upper The cover plate 16 may be fixed.

Further, in the present embodiment, the upper cover plate (second plate) 16 is provided between the coil member 15 and the upper plate portion 44 of the coil case 18, but the coil case 15 is provided without providing the upper cover plate 16. The upper plate portion 18 may be a second plate on the upper side (the other end side) of the coil member 15. In this case, the space between the adjacent region of the upper plate portion 44 of the coil case 18 and the coil member 15 may be sealed with an adhesive over the entire circumferential region in the circumferential direction.

In the present embodiment, the core member 14 is formed by fixing the core distal end portion 22 to the core base end portion 21 in advance. However, the core distal end portion 22 does not have to be fixed to the core base end portion 21 in advance. Alternatively, the core tip portion 22 may be fixed in advance above the internal space 35 of the coil member 15.

In the present embodiment, the gaps between the upper cover plate 16, the coil member 15, the lower cover plate 17, the core tip 22, and the area adjacent to the flange 24 are sealed with the

adhesives

39, 42, and 43. Instead of using the

adhesives

39, 42, and 43, the space between the adjacent regions may be sealed by, for example, a thin plate-shaped sealing member.

As described above, the present disclosure has been described based on the above embodiments. However, the present disclosure is not limited to the contents of the above embodiments, and can be appropriately changed without departing from the present disclosure. That is, other embodiments, examples, operation techniques, and the like performed by those skilled in the art based on this embodiment are all included in the scope of the present disclosure.

For example, in the above-described embodiment, the solenoid valve according to the present disclosure is applied to a pilot valve (main stop valve 10) having a double valve structure. However, the present invention is not limited to this. The present invention may be applied to a direct-acting valve that functions as a valve unit that opens and closes a port of a road (a downstream port 6b of the fuel supply path 4).

Further, in the above embodiment, the solenoid valve according to the present disclosure is applied to the main stop valve 10 of the vehicle 1 using natural gas as a fuel. However, the present invention is not limited to this, and the port of the fluid flow passage is opened and closed. It can be applied to various solenoid valves. For example, the present invention may be applied to an electromagnetic valve that opens and closes a port of a flow passage (fluid flow passage) through which a liquid flows.

This application is based on a Japanese patent application filed on August 30, 2018 (Japanese Patent Application No. 2018-161753), the contents of which are incorporated herein by reference.

電磁 The solenoid valve according to the present disclosure can be widely applied to a solenoid valve that opens and closes a port of a fluid flow passage.

4: Fuel supply path (fluid flow path)
6b: Downstream port (port)
10: Main stop valve (solenoid valve)
11: Main valve (valve part)
15: Coil member 16: Upper cover plate (second plate)
17: Lower cover plate (first plate)
21: Core base end portion (second core portion)
22: core tip (first core)
23: Guide pipe 24: Flange 25: Plunger 35:

Internal space

39, 42, 43: Adhesive 41: Opening of lower cover plate (Opening of first plate)

Claims

An electromagnetic valve that opens and closes a port provided in the fluid flow path,
A cylindrical coil member that partitions an internal space extending in a predetermined direction,
A first plate that has an opening communicating with the internal space and is a magnetic body disposed on one end side of the coil member in the predetermined direction;
A second plate that is a magnetic body disposed on the other end side of the coil member in the predetermined direction;
A first core portion that is a magnetic body disposed on the other end side of the internal space of the coil member;
A cylindrical guide pipe extending in the predetermined direction; a flange-shaped flange portion projecting radially outward from an entire peripheral area of an outer peripheral surface of the one end of the guide pipe; A plunger slidably supported by the guide pipe, and a valve portion provided on the one end side of the plunger, wherein the guide pipe has a region on the other end side of the flange portion on the other end side. A second core portion which is inserted from the opening of the first plate into the internal space on the one end side of the first core portion and the flange portion is arranged on the one end side of the first plate. ,
When the first core portion is excited by a magnetic field generated by the coil member, the plunger moves to the first core portion side, and the valve portion opens the port of the fluid flow passage,
The second plate, the coil member, the first plate, the first core portion, the guide pipe, and between the adjacent regions of at least one member having an adjacent region among the flange portion, An electromagnetic valve, wherein the electromagnetic valve is sealed over an entire peripheral area around an axis of the internal space of the coil member.
The solenoid valve according to claim 1,
The at least one set of members is the first plate and the flange portion.
The solenoid valve according to claim 1 or 2, wherein:
The electromagnetic valve, wherein the space between the adjacent regions of the at least one pair of members is sealed by an adhesive applied to the adjacent region.