JP6743631B2 - Solenoid valve device - Google Patents

Description

The present invention relates to a solenoid valve device used, for example, in an automatic transmission of a vehicle.

The automatic transmission of the vehicle is provided with a control valve for controlling the transmission mechanism. The control valve controls the speed change mechanism by supplying and stopping a predetermined amount of hydraulic pressure to the speed change mechanism using an electromagnetic valve device.

Such an electromagnetic valve device is described in Patent Document 1, for example. The electromagnetic valve device of Patent Document 1 is an ON/OFF type electromagnetic valve, and this electromagnetic valve device includes a nozzle that accommodates a valve body and a solenoid that drives the valve body. The solenoid accommodates a bobbin around which a coil is wound, a fixed core, and a plunger pin that reciprocates at the center of the coil inside a cylindrical case. The solenoid valve device reciprocates the plunger pin by energizing the coil of the solenoid, and opens and closes the valve element at the tip of the plunger pin.

JP, 2003-207069, A

In the solenoid valve device of Patent Document 1, a bobbin around which a coil of a solenoid is wound and a nozzle accommodating a valve body are integrally molded with resin. The fixed core (also called a yoke) and the valve body are integrated with resin by insert molding.

Generally, it is necessary to adjust the flow rate characteristics of the solenoid valve device according to its application. In order to adjust the flow rate characteristics in the manufacturing process of the solenoid valve device, for example, either or both of the following measures are taken.
(1) Change the size and shape of the oil passage on the valve body side.
(2) Change the number of turns and shape of the coil on the bobbin side.
However, when the bobbin and the nozzle are integrally molded with resin as in the invention of Patent Document 1, a dedicated molded product is required even if either (1) or (2) is dealt with, and the flow rate is increased. There is a problem that the work of changing the characteristics becomes complicated.

In addition, the device in which the bobbin and the nozzle are integrally molded as in Patent Document 1 has a simple structure, but has a drawback that it is difficult to automate because the nozzle portion becomes an obstacle when the coil is wound around the bobbin.

In order to solve such a problem, a structure in which the bobbin and the nozzle portion are separated is being studied. For example, the resin bobbin and the resin nozzle are formed separately, and the bobbin and the nozzle are fixed to the case by caulking the peripheral edge of the opening of the case. However, in this type of solenoid valve device, there is a gap in the joint surface between the bobbin and the nozzle, so that oil leakage and infiltration of water into the inside cannot be suppressed. Therefore, it is used in an environment where oil leakage prevention and waterproofing are required, even if it is effective when the sealability is not considered because it is used in oil, such as a solenoid valve device installed in the valve body of an automatic transmission. It is not preferable for a solenoid valve device.

An object of the present invention is to provide an electromagnetic valve device that can be used in various environments such as the atmosphere without oil leakage or water intrusion from the joint surface between the nozzle and the bobbin.

The electromagnetic valve device of the present invention is characterized by having the following configuration.
(1) A solenoid part having the following structure.
(1-1) A cylindrical case having one end in the axial direction closed and an opening at the other end in the axial direction.
(1-2) A resin bobbin provided in the case and having a through hole extending in the axial direction at the center.
(1-3) A coil wound around the bobbin.
(1-4) A core fixed in the through hole of the bobbin.
(1-5) A plunger pin having at least a part arranged in the through hole of the bobbin and moving in the axial direction.
(2) Nozzle part (2-1) having the following structure: A resin provided with a hollow part extending in the axial direction and a pin receiving part provided on one axial end of the hollow part and into which the plunger pin is inserted. Made nozzle.
(2-2) A plurality of ports connected to the hollow portion.
(2-3) A valve element provided in the hollow portion and driven by the plunger pin to open and close between the plurality of ports.
(3) A metal plate that is provided in the solenoid portion and closes the opening of the case.
(4) A metal that is provided in the nozzle portion, an inner peripheral portion of which is fixed to one end of the nozzle in the axial direction, and an outer peripheral portion of which extends radially outward from one end of the nozzle in the axial direction and which is axially stacked on the metal plate. Element.
(5) A bent portion that is provided on the periphery of the opening of the case and that sandwiches a portion where the outer peripheral portion of the metal plate and the outer peripheral portion of the metal member overlap in the axial direction.
(6) An annular groove provided at one end in the axial direction of the nozzle portion at a position radially inside the metal member and outside the pin receiving portion in the radial direction so as to face the metal plate.
(7) A first seal member which is disposed in the annular groove and seals the axial end of the nozzle portion and the metal plate.

In the present invention, the following configurations are preferable.
(1) A second seal member that is disposed in close contact with the other end of the bobbin in the axial direction and the surface of the metal plate on the one end side in the axial direction and is sandwiched therebetween.
(2) A groove provided in the circumferential surface of the core on one end side in the axial direction so as to be recessed in the circumferential direction, and a third groove arranged in the groove and sandwiched in a compressed state between the core and the bobbin. And a seal member.
(3) The metal member is a ring-shaped member having an opening at the center, and a flange portion protruding outward in the radial direction is provided on the outer peripheral portion of the metal member, and the inner peripheral portion thereof is embedded in the resin forming the nozzle. It has an embedded part.
(4) An annular protrusion protruding toward the inside of the case is provided at one end of the bobbin in the axial direction, and a fourth seal member is arranged outside the annular protrusion in the radial direction.
(5) A recess provided on the other end of the core in the axial direction, a plunger member fixed to the plunger pin and movably provided on the other end of the core in the axial direction, and one end in the axial direction. Is disposed in the recess, the other end in the axial direction contacts the plunger pin or the plunger member, and the other end in the axial direction of the through hole of the bobbin, and the nozzle from the other axial end of the bobbin. And a cylindrical guide member projecting toward the side.
(6) A protrusion is provided on one end side of the core in the axial direction, and a hole portion into which the protrusion is fitted is provided on one end of the case in the axial direction.

In the present invention, the outer peripheral portion of the metal member provided in the nozzle portion is bulged outward in the radial direction, overlapped with the metal plate of the solenoid portion, and the case is caulked to firmly fix the nozzle portion and the solenoid portion. it can. Further, by providing an annular groove on the inner side of the metal member in the radial direction so as to face the metal plate and fitting the seal member into the annular groove, it is possible to secure the sealing property of the joint surface between the nozzle portion and the solenoid portion.

FIG. 1 is a perspective view of the electromagnetic valve device according to the first embodiment, which is vertically cut at the center. FIG. 2 is an exploded perspective view of FIG. FIG. 3 is a perspective view of the electromagnetic valve device according to the second embodiment, which is vertically cut at the center.

Hereinafter, embodiments of the present invention will be described. In the embodiment, the axis refers to the central axis along the longitudinal direction of the plunger pin, and when simply referred to as the circumferential direction or the axial direction, it indicates the circumferential direction of the central axis or the axial direction of the central axis. One end side in the axial direction shows the upper side in the figure, and the other end side in the axial direction shows the lower side in the figure.

[1. First Embodiment]
[1-1. Constitution]
As shown in FIGS. 1 and 2, the solenoid valve device of the present embodiment is composed of a solenoid portion 1 and a nozzle portion 2 which are separately configured. The nozzle portion 2 of the present embodiment is a normal low type, that is, a solenoid valve device that normally outputs when the valve is closed and the valve is opened.

(1) Solenoid Part The solenoid part 1 includes a bottomed cylindrical case 10 whose one end in the axial direction is closed and which has an opening at the other end in the axial direction. A resin bobbin 11 having a through hole extending in the axial direction in the center is provided in the case 10, and a coil 12 is wound around the outer circumference of the bobbin 11. That is, the bobbin 11 includes the cylindrical portion 11a and the flanges 11b and 11c provided at both ends thereof, and the coil 12 is wound around the outer periphery of the cylindrical portion 11a.

The core 13 is fixed to one end side in the axial direction of the through hole provided inside the cylindrical portion 11a of the bobbin 11. The core 13 is provided with a protrusion 13a that protrudes toward the one end side in the axial direction at the center of the one end side in the axial direction. The protrusion 13a is fitted into a hole 10a provided at the upper end of the case 10 in the axial direction.

A cylindrical guide member 14 having the other axial end protruding toward the nozzle 2 is fixed to the other axial end of the through hole of the cylindrical portion 11a. A plunger member 15a is provided on the inner periphery of the guide member 14 so as to be movable in the axial direction, and the plunger pin 15 is fixed to the center of the plunger member 15a. The other axial end of the plunger pin 15 projects toward the nozzle portion 2 than the other axial end of the plunger member 15a.

On the other end side in the axial direction of the core 13, there is provided a recess 13b whose other end side is open. In the recess 13b, a spring 16 is provided, one end of which in the axial direction is arranged in the recess 13b and the other end of which in the axial direction contacts the one end of the plunger member 15a in the axial direction.

A resin member 17 that covers the bobbin 11 and the coil 12 is provided between the outer circumference of the flanges 11 b and 11 c of the bobbin 11, the outer circumference of the coil 12, and the inner circumference of the case 10. A part of the resin member 17 projects to the outside of the case 10, and a connector 18 for energizing the coil 12 is provided on the projecting portion.

An annular metal plate 19 is provided on the other end side of the flange 11b in the axial direction so as to sandwich a part of the resin member 17. The metal plate 19 has an opening at the center thereof into which the guide member 14 is inserted, and the outer diameter of the metal plate 19 is such that it fits inside the case 10 and closes the opening of the case 10.

On the inner circumference of the opening of the case 10, by making the thickness of the edge of the case 10 smaller than that of the other cylindrical portions, the inner diameter on the bottom side of the case 10 is small and the outer diameter on the opening side is large. A section 10b is provided. The outer peripheral portion of the metal plate 19 contacts the step portion 10b, and the movement of the metal plate 19 into the case 10 is prevented.

A bent portion 10c is provided on the periphery of the opening of the case 10 so as to sandwich a portion where the outer peripheral portion of the metal plate 19 and the outer peripheral portion of the metal member 26 of the nozzle portion 2 described later overlap in the axial direction. That is, the axially thin portion of the opening of the case 10 has a larger axial dimension than the combined thickness of the metal plate 19 and the two metal members 26 of the nozzle portion 2 described later. A portion of the opening of the case 10 that exceeds the thickness of the metal plate 19 and the metal member 26 is a bent portion 10c that is bent inward of the case 10. The bent portion 10c fixes the overlapping metal plate 19 and metal member 26 by sandwiching them between the step portion 10b.

(2) Nozzle portion The nozzle portion 2 includes a substantially cylindrical resin nozzle 20 having a hollow portion 21 therein. A receiving portion 22 into which the guide member 14, the plunger pin 15, and the plunger member 15a are inserted is provided in communication with the hollow portion 21 on one end side of the nozzle 20 in the axial direction, that is, on the solenoid portion 1 side. The nozzle 20 has a first port 23, a second port 24, a third port 28 communicating with the hollow portion 21, and a first port 23, a second port 24, and a third port 28 driven by the plunger pin 15. During this period, the valve body 25 that opens and closes between the third port 28 and the first port 23 and the second port 24 is accommodated. In this embodiment, the first port 23 is an import and the second port 24 is an outport. A drain port 28, which is a third port, is provided on one end side of the valve body 25 in the axial direction via a valve seat.

The outer diameter of the resin nozzle 20 on the other end side in the axial direction is one step smaller on the other end side in the axial direction, and is one step smaller on the other end side in the axial direction than the small diameter portion. On the outer periphery of each stage of the nozzle 20 having a smaller diameter in two stages, an O-ring or the like for ensuring the sealing property between the nozzle 20 and the valve body when the solenoid valve device is attached to the valve body of the automatic transmission or the like. Sealing members 20a are provided respectively.

An annular metal member 26 is fixed to one end side in the axial direction of the nozzle portion 2 by insert molding, and the outer diameter dimension thereof is a size that fits into the inner circumference of the case 10. The metal member 26 is a crank-shaped member having a vertical cross section having a flange portion 26a on the outer peripheral side and an embedded portion 26b on the inner peripheral side. The flange portion 26a projects radially outward and is superposed on the metal plate 19 in the axial direction. The embedded portion 26b is located on the other end side in the axial direction with respect to the flange portion 26a, and holds the posture of the nozzle 20 by the crank-shaped embedded portion 26b.

(3) Seal member Since the inner peripheral portion of the metal member 26 is located on the other end side in the axial direction, a nozzle is provided between the opening provided at the center of the pin receiving portion 22 and the inner peripheral portion of the metal member 26. The resin forming part 2 is present. An annular groove 27 is formed facing the metal plate 19 at the resin portion of the pin receiving portion 22, that is, at a position radially inside the metal member 26 and outside the opening provided in the pin receiving portion 22 in the radial direction. It is provided. In the annular groove 27, a first seal member 30 that seals the surface of the pin receiving portion 22, that is, the surface of the nozzle portion 2 at one axial end and the surface of the metal plate 19 is provided in close contact.

A second seal member 31 is provided in close contact between the flange 11b provided on the other axial end of the bobbin 11 and the surface of the metal plate 19 on the one axial end side. That is, the other end of the bobbin 11 in the axial direction is provided with an annular protrusion 11d that protrudes toward the metal plate 19, and the second seal member 31 is arranged radially outside the annular protrusion 11d.

A groove 13c recessed in the circumferential direction is provided on the circumferential surface of the core 13 on one end side in the axial direction, and a third seal member 32 is sandwiched between the core 13 and the bobbin 11 in the groove 13c to closely adhere to each other. Is provided.

An annular protrusion 11e is provided on the surface of the flange 11c on the one axial end side of the bobbin 11 on the one axial end side so as to protrude toward the inner surface of the case 10 on the one axial end side. The fourth seal member 33 is arranged.

[1-2. Action]
In order to manufacture the solenoid valve device of the present embodiment, as shown in FIG. 2, the solenoid portion 1 not covered with the case 10 and the nozzle portion 2 are separately assembled.

The solenoid is assembled as follows.
(1) The coil 12 is wound around the outer circumference of the cylindrical portion 11a of the bobbin 11.
(2) The resin member 17 is molded so as to cover the coil wound around the bobbin 11.
(3) After fitting the third seal member 32 on the outer periphery of the core 13 on the one end side in the axial direction, insert the third seal member 32 into the cylindrical portion 11a of the bobbin 11, and then fit the coil spring 16 into the recess 13b of the core 13. Put in.
(4) With the plunger pin 15 to which the plunger member 15a is fixed inserted in the guide member 14, the plunger pin 15 is inserted into the cylindrical portion 11a of the bobbin 11 so as to be on the other end side in the axial direction of the core 13.
(5) The second seal member 31 is fitted on the outer periphery of the protrusion 11d provided on the flange portion 11b of the bobbin 11.
(6) The metal plate 19 is fitted on the other end of the bobbin 11 in the axial direction of the flange portion 11b.
(7) The fourth seal member 33 is fitted onto the outer circumference of the protrusion 11e provided on the flange portion 11c of the bobbin 11.

When molding the nozzle 20 with resin, the nozzle portion 2 fixes the metal member 26 to the receiving portion 22 and the valve body 25 incorporated in the valve seat to the confluent portion of each port by insert molding. .. After the nozzle portion 2 is molded, the first seal member 30 is fitted into the annular groove 27 provided in the joint surface of the receiving portion 22.

The solenoid part 1 and the nozzle part 2 are assembled as follows.
(1) The case 10 with the bent portion 10c extended is placed on the outer side of the solenoid portion 1 from one end in the axial direction, and the outer peripheral edge of the metal plate 19 is brought into contact with the step portion 10b, whereby axial positioning is performed. To do.
(2) When the case 10 is put on, the protrusion 13a of the core 13 is inserted into the hole 10a of the case 10 to position the case 10 in the circumferential direction.
(3) The nozzle portion 2 is fitted into the opening of the case 10 from the other end side in the axial direction. At this time, the guide member 14 and the plunger pin 15 protruding from the metal plate 19 are inserted into the receiving portion 22, and the other axial end of the plunger pin 15 contacts the valve body 25.
(4) At the same time, the metal member 26 is superposed on the metal plate 19, the outer edges of both are arranged at the step 10b of the case 10, and the other end of the bent portion 10c in the extended state in the axial direction is the metal member 26. Projects from the surface on the other end side in the axial direction.
(5) By crimping the bent portion 10c toward the central axis, the metal member 26 and the metal plate 19 are sandwiched between the step portion 10b and the bent portion 10c, and the solenoid portion 1 and the nozzle portion 2 are fixed.
(6) By crimping the bent portion 10c, the flange portion 11b of the bobbin 11, the metal plate 19 and the metal member 26 are strongly pressed in the axial direction, and the first seal member 30 and the second seal member 31 are deformed. The gap between the flange portion 11b and the metal plate 19 and the gap between the metal plate 19 and the nozzle portion 2 are sealed.

The solenoid valve device manufactured in this manner is attached to the control valve by fitting the resin nozzle 20 portion into the mounting hole of the solenoid valve provided in the control valve of the transmission. In this case, the seal member 20a provided on the outer peripheral surface of the nozzle 20 closes the gap between the inner peripheral surface of the mounting hole and the outer peripheral surface of the nozzle 20 to prevent oil leakage.

[1-3. effect]
According to this embodiment, the following effects are exhibited.
(1) Since the solenoid part 1 and the nozzle part 2 are formed separately and are fixed by caulking to form the solenoid valve device, the solenoid part 1 and the nozzle part 2 having different specifications are appropriately selected and combined. Thus, various solenoid valve devices can be easily manufactured.

(2) By sandwiching the two metal plates 19 and the metal member 26 between the bent portion 10c and the step portion 10b provided at the opening of the metal case 10, the metal portion 26 and the solenoid portion 1 are made of a metal having high strength. 2 and can be firmly fixed.

(3) Since the first seal member 30 disposed in the annular groove 27 and sealing the one axial end of the nozzle portion 2 and the metal plate 19 is provided, the solenoid portion 1 and the nozzle portion 2 are fixed by caulking the case 10. At this time, the gap between the connecting portions of the two is sealed by the first seal member 30. As a result, even if the oil reaches the connecting portion between the two through the plunger pin 15, the plunger member 15a, or the guide member 14 due to the hydraulic pressure from the first port 23 and the second port 24, the oil still has the first seal. Leakage to the outside is prevented by the member.

(4) Since the second seal member 31 is provided in close contact with the other axial end of the bobbin 11 and the axial one end side surface of the metal plate, the oil leaked from the port portion is It can be prevented from leaking outside through the gap between the flange portion 11 b of the bobbin 11 and the metal plate 19 along the plunger member 15 a and the guide member 14.

(5) A groove 13c provided in the peripheral surface of the core 13 on the one end side in the axial direction to be recessed in the circumferential direction, and a groove 13c arranged in the groove 13c and sandwiched in a compressed state between the core 13 and the bobbin 11. 3, the oil leaking from the port portion is transmitted through the plunger member 15a, the guide member 14, and the coil 13, and the inner peripheral surface of the cylindrical portion 11a of the bobbin 11 and the coil 13 are separated from each other. It is possible to prevent leakage to the outside through the gap with the outer peripheral surface.

(6) Since the fourth seal member 33 is provided between the flange portion 11c of the bobbin 11 and the inner surface of the case 10, the inner surface of the case 10 and the outer peripheral surface of the resin member 17 are separated from the edge of the opening of the case 10. It is possible to prevent external moisture from entering the inside of the device through the gap.

(7) The metal member 26 is a ring-shaped member having an opening at the center, and a flange portion 26a protruding outward in the radial direction is provided on the outer peripheral portion thereof, and the inner peripheral portion thereof is embedded in the resin forming the nozzle 20. Since the embedded portion 26b is provided, the case 10 alone can fix the entire periphery of the metal plate 19 and the metal member 26, and the solenoid portion 1 and the nozzle portion 2 can be fixed with a simple inner surface structure. In particular, since the embedded portion 26b of the metal member 26 is embedded in the resin of the nozzle portion 2, the metal member 26 can be easily fixed with high strength by insert molding when the nozzle portion 2 is molded.

(8) An annular protrusion 11d protruding toward the metal plate 19 is provided at the other axial end of the bobbin 11, and the second seal member 31 is arranged radially outside the annular protrusion 11d. The second seal member 31 can be accurately positioned by the protrusion 11d.

(9) Since the spring 16 and the plunger member 15a are provided between the core 13 and the plunger pin 15, many members are exposed from the opening provided in the center of the metal plate 19 that closes the opening of the case 10. Therefore, many members are contaminated by water or oil that has entered through the gap between the solenoid unit 1 and the nozzle unit 2, which easily causes a failure. However, in the present embodiment, the gap between the solenoid unit 1 and the nozzle unit 2 is the third. Since it is sealed by the seal member 32, the reliability of the device is improved without the contamination of these members.

(10) Since the protrusion 13a is provided on one end side of the core 13 in the axial direction and the hole 10a into which the protrusion 13a is fitted is provided at the upper end of the case 10 in the axial direction, the protrusion 13a of the core 13 is formed on the hole 10a of the case 10. Both can be accurately positioned by fitting into.

[2. Second Embodiment]
A second embodiment of the present invention will be described with reference to FIG. The second embodiment is a normal high type solenoid valve device, that is, a solenoid valve device that normally outputs oil when the valve is open and stops oil output when the valve is closed. Except for the portions, only the configuration of the solenoid portion different from that of the first embodiment is shown. Further, the same members as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

[2-1. Constitution]
The electromagnetic valve device of the present embodiment includes a cylindrical core 13 having a through hole extending from one end side in the axial direction to the other end side. A plunger pin 15 is inserted into the through hole of the core 13 so as to be movable in the axial direction. The other axial end of the plunger pin 15 projects from the core 13. A suction plate 15b, which is attracted to the other end in the axial direction by the excitation of the coil 12, is arranged at a portion on the one end side in the axial direction in the case 10, that is, a closed portion of the case 10, and at the center of the suction plate 15b, One end side of the plunger pin 15 in the axial direction is attached.

A circular metal plate 19 is fitted into the opening of the case 10 so as to close the opening. An opening for inserting the other end of the core 13 in the axial direction is provided at the center of the metal plate 19. Between the surface on the other end side in the axial direction of the metal plate 19 and the surface on the one end side in the axial direction of the pin receiving portion 22 of the nozzle 20 not shown, the first not shown so as to surround the opening in the center of the metal plate 19. The seal member 30 is provided. On the other hand, a second seal that closes the interface between the flange 11b of the bobbin 11 and the metal plate 19 between the surface of the metal plate 19 on the one end side in the axial direction and the surface of the flange 11b of the bobbin 11 on the other end side in the axial direction. A member 31 is provided.

An annular fifth seal member 34 is fitted over the entire circumference of the resin member 17, and the fifth seal member 34 closes the gap between the outer peripheral surface of the resin member 17 and the inner peripheral surface of the case 10. .. As the fifth seal member 34, for example, an O-ring can be used, but a seal member having another shape may be used. The same applies to the sixth seal member 35 and the seventh seal member 36 described later.

An annular sixth seal member 35 is fitted on the outer peripheral surface of the core 13 on the other end side in the axial direction. The sixth seal member 35 is in close contact with the inner periphery of the hollow portion 21 of the nozzle 20 and the outer periphery of the core 13 on the other end side in the axial direction, and seals the gap between the two.

A flange portion 13d that protrudes toward the outer peripheral side of the core 13 on the one axial side is provided. An annular seventh seal member 36 is arranged between the surface of the flange portion 13d on the other end side in the axial direction and the surface of the flange portion 13d on the one end side in the axial direction of the bobbin 11. The seventh seal member 36 is in close contact with the flange portion 13d and the bobbin 11 and seals the gap between them.

[2-2. Action effect]
(1) Also in this embodiment, the gap between the annular metal plate 19 provided in the solenoid portion 1 and the flange portion 26a of the metal member 26 provided in the nozzle portion 2 is sealed by the first seal member 30. It As a result, even if the solenoid portion 1 and the nozzle portion 2 are separately manufactured and then the both are fixed by caulking the case 10, the gap between the joint surfaces of both is sealed by the first seal member 30, and No leakage occurs. Therefore, the same effect as the first embodiment is exhibited.

(2) Since the second seal member 31 that closes the interface between the flange 11b of the bobbin 11 and the metal plate 19 is provided between the surface of the metal plate 19 and the flange portion 11b of the bobbin 11, it is possible to prevent a gap from being left between them. Can prevent oil leakage.

(3) Since the gap between the inner surface of the case 10 and the outer peripheral surface of the resin member 17 is sealed by the fifth seal member 34, the inner peripheral surface of the bobbin 11 and the outer peripheral surface of the core 13 are separated from the gap between the plunger pin 15 and the core 13. It is possible to prevent oil from leaking out through the gap between the surfaces.

(4) The sixth seal member 35 is closely placed between the entire circumference of the one end side of the core 13 and the inner surface of the hollow portion 21 of the nozzle 20 to seal the gap between the two, so It is possible to prevent oil from leaking to the outside.

(5) Since the seventh seal member 36 is arranged between the surface on the one end side of the bobbin 11 and the flange portion 13d of the core 13, it passes through the gap between the inner peripheral surface of the bobbin 11 and the outer peripheral surface of the core 13, It is possible to prevent oil from leaking from the one axial end of the core 13 to the outside. Further, since the seventh seal member 36 is sandwiched between the flange portion 13d and the bobbin 11, the seventh seal member 36 can be easily positioned.

[3. Other Embodiments]
The present invention is not limited to the above embodiments. The above embodiment is presented as an example, and can be implemented in various other forms. Various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope of the invention, the gist, and the scope of equivalents thereof. Hereinafter, an example thereof will be shown.

(1) In the illustrated embodiment, the edge of the opening of the case 10 is thinned over the entire circumference to provide the bent portion 10c. However, the bent portion 10c is provided around the opening of the case 10 at predetermined intervals. The bent portion 10c may be provided.

(2) The metal plate 19 and the metal member 26 are not limited to annular members. A plurality of arc-shaped metal plates 19 and metal members 26 may be circumferentially arranged at regular intervals.

(3) The metal member 26 is not limited to the crank-shaped cross section as long as it has the flange portion 26a on the outer circumference. The embedded portion 26b to be embedded inside the resin may have another shape such as an L-shaped cross section formed of a plate-shaped member extending in the axial direction.

(4) The configurations of the solenoid unit 1 and the nozzle unit 2 are not limited, and the shapes of the core 13, the plunger pin 11, the ports 23 and 24 provided in the nozzle 20, and the valve body 25 may be different. It can also be applied to normal high type solenoid valve devices.

DESCRIPTION OF SYMBOLS 1... Solenoid part, 10... Case, 10a... Hole part, 10b... Step part, 10c... Bending part, 11... Bobbin, 11a... Cylindrical part, 11b, 11c... Flange, 11d, 11e... Protrusion, 12... Coil, 13 ... core, 13a... protrusion, 13b recess, 13c... groove, 13d... flange part, 14... guide member, 15... plunger pin, 15a... plunger member, 15b... suction plate, 16... spring, 17... resin member, 18... Connector, 19... Metal plate, 2... Nozzle part, 20... Nozzle, 20a... Seal member, 21... Hollow part, 22... Receiving part, 23... First port, 24... Second port, 25... Valve body, 26... Metal member, 26a... Flange portion, 26b... Embedded portion, 27... Annular groove, 28... Third port, 30... First seal member, 31... Second seal member, 32... Third seal member, 33... Fourth seal member, 34... Fifth seal member, 35... Sixth seal member, 36... Seventh seal member.

Claims (7)

A cylindrical case having one axial side closed and an opening on the other axial side,
A resin bobbin provided in the case, having a through hole extending in the center in the axial direction,
A coil wound around the outer circumference of the bobbin,
A core fixed in the through hole of the bobbin,
At least a part is arranged in the through hole of the bobbin, and a plunger pin that moves in the axial direction,
A solenoid section having
A resin nozzle that includes a hollow portion that extends in the axial direction, and a pin receiving portion that is provided on one axial side end of the hollow portion and into which the plunger pin is inserted,
A plurality of ports connected to the hollow portion,
A valve body provided in the hollow portion and driven by the plunger pin to open and close between the plurality of ports;
A nozzle portion having
In a solenoid valve device equipped with
A metal plate that is provided in the solenoid portion and closes the opening of the case;
A metal member provided in the nozzle portion, an inner peripheral portion of which is fixed to one end of the nozzle in the axial direction, and an outer peripheral portion of which extends radially outward from one end of the nozzle in the axial direction, and which is axially superposed on the metal plate;
A bent portion that is provided at the periphery of the opening of the case, and that sandwiches a portion where the outer peripheral portion of the metal plate and the outer peripheral portion of the metal member overlap in the axial direction,
At one axial end of the nozzle portion, an annular groove provided facing the metal plate at a position radially inside the metal member and radially outside the pin receiving portion,
A first seal member that is disposed in the annular groove and seals the axial end of the nozzle portion and the metal plate;
Solenoid valve device equipped with. The electromagnetic valve device according to claim 1, further comprising a second seal member that is disposed so as to be in close contact with the other end of the bobbin in the axial direction and the surface of the metal plate on the one end side in the axial direction. A groove provided in the peripheral surface on the one axial side of the core so as to be recessed in the circumferential direction,
3. A solenoid valve device according to claim 1, further comprising a third seal member disposed in the groove and sandwiched between the core and the bobbin in a compressed state. The metal member is an annular member having an opening in the center, a flange portion radially outwardly projecting on the outer peripheral portion thereof, and an embedded portion embedded in the resin forming the nozzle is provided on the inner peripheral portion thereof. The electromagnetic valve device according to any one of claims 1 to 3, which has. An annular projection protruding toward the inner surface of the case is provided at one end of the bobbin in the axial direction,
The solenoid valve device according to any one of claims 1 to 4, wherein a fourth seal member is arranged radially outside the annular projection. A recess provided on the other axial side of the core,
A plunger member fixed to the plunger pin and provided axially movably on the other axial end of the core;
A spring having one end in the axial direction arranged in the recess and the other end in the axial direction contacting the plunger pin or the plunger member;
A cylindrical guide member arranged on the other axial end of the through hole of the bobbin and protruding from the other axial end of the bobbin to the nozzle portion side.
The solenoid valve device according to any one of claims 1 to 5, further comprising: A protrusion is provided on one end side in the axial direction of the core,
The solenoid valve device according to claim 6, wherein a hole portion into which the protrusion is fitted is provided on one axial side of the case.