JPH0126434B2 - - Google Patents

Description

Detailed Description of the Invention (Technical Field of the Invention) The present invention relates to a small poppet-shaped solenoid valve that operates two or more valves with one solenoid, and more specifically, to a small poppet-shaped solenoid valve that operates two or more valves with one solenoid. By the operation of the first valve body provided in
The present invention relates to miniaturization of a type of electromagnetic valve in which a second valve body is operated via a plunger pin provided through a main body of the valve.

(Prior Art to the Invention) The basic structure of this type of device is disclosed in USP 3,815,633.

A feature of the device disclosed here is that when one valve in a series valve is operated, the other valve is operated via a plurality of rods that are slidable through holes provided in the valve body.

First, the basic configuration will be briefly described. The valve body has first, second, and third ports, the first port communicating with an opening provided in the first valve seat, and the second port communicating with an opening provided in the second valve seat. It leads to an opening. First and second valve discs are guided within the valve body and move away from and against first and second valve seats to open and close the first and second openings. First and second spaces are provided on the outer circumferences of the first and second valve seats, and each space communicates with the third port via a passage. The valve body has two through holes parallel to the moving direction of the first and second valve bodies and between each valve body, and a rod is slidably inserted into each of the through holes. . The rod abuts the first valve body and is fixed to the second valve body. The first and second valve bodies are biased by first and second springs in a direction to close the first and second valve seats, respectively, and the first valve body is actuated by a plunger of the electromagnetic device. .

When the electromagnetic device is de-energized, the first spring closes the first valve and the rod opens the second valve. When the electromagnetic device is energized, the first valve is opened by the displacement of the plunger, and the second valve is closed by being biased by the second spring.

In this way, by concentrating each port on the valve body, the valve can be used not only as a single unit but also as a manifold.

The present invention has been made based on the above-described device, but the following problems have arisen in reducing the size of such a device.

That is, when miniaturizing such a solenoid valve, it becomes difficult to manage the dimensions of each component. For reliability of operation, it is important to control the dimensions related to the interlocking operation of the first valve and the second valve, and it is necessary to manufacture the distance between the valve seats and the length of the rod with high precision. However, in the above-mentioned device, since the rod is fixed to the carrier on which the second valve body is provided, it is difficult to improve the dimensional accuracy of the rod with respect to the distance between the valve seats.

Furthermore, by reducing the displacement of the plunger, the electromagnetic device can be made smaller, so responsiveness can be improved and power consumption can be reduced. Since the amount of movement of the plunger is determined by the space in which the plunger moves when the electromagnetic device is energized, the positioning of the joint between the electromagnetic device and the valve body must be accurate. However, in the above-mentioned device, since both are fixed by the electromagnetic device and the threaded part of the valve body, the range of movement of the plunger cannot be determined accurately. In addition to being large in size, it was also inconvenient to attach and detach the electromagnetic device.

(Objective of the Invention) A first object of the invention is to provide a small solenoid valve having a three-port valve body with a structure that allows easy dimensional control.

A second object of the invention is to provide a small solenoid valve that allows the same operation as when the electromagnetic device is energized by pushing a push pin when the electromagnetic device of the small electromagnetic valve is not energized. There is a particular thing.

A third object of the invention is to provide a small solenoid valve having a 5-port valve body with a structure that allows easy dimensional control.

The object of the fourth invention is to enable the solenoid device of the small solenoid valve according to the third invention to perform the same operation as when the electromagnetic device is energized by pushing a push pin when the electromagnetic device is not energized. The purpose of the present invention is to provide a small solenoid valve.

(Means for Solving the Problems) A small solenoid valve for achieving the object of the first invention includes an import, an out port, an exhaust port, and a first valve seat having an opening communicating with the import. a second valve seat having an opening communicating with the exhaust port; a first space surrounding the first valve seat; and a second space surrounding the second valve seat.
a valve body having a passage that communicates the first space and the second space with an out port;
a first valve body that can open and close the opening of the first valve seat; a second valve body that can open and close the opening of the second valve seat; and the first valve body and the second valve. an interlocking member for interlocking the body, and a first position in which the first valve body is provided at the tip thereof and the first valve body closes the first valve seat and a second position in which the first valve seat is opened. an electromagnetic device having a plunger whose movement is controlled in a second position, the upper end surface of the valve body and the surface having the opening of the first valve seat being provided on the same plane; A through hole is provided in the valve body at a position connecting the plunger and the second valve body for an interlocking member that interlocks the valve body with the first valve body; The lower end surface of the plunger is provided on the same plane, and the electromagnetic device includes a lower core that contacts the upper end surface of the valve body, a yoke that airtightly fits into the lower core, and a coil wound around the yoke. The yoke comprises a core that is airtightly inserted into the upper end of the yoke, and a case that fits into the core and the lower iron core on the lower side, and whose lower edge abuts the valve body. a magnetic circuit is formed by the lower iron core, the case, and the core; and the electromagnetic device and the valve body are coupled by a lower edge of the case being in contact with the valve body and using two or more screws. The interlocking member is a plunger pin inserted into the through hole, and the upper end surface of the plunger pin is in contact with the lower end surface of the plunger, and the lower end surface is connected to the second valve body. The second valve body is in contact with the upper end surface of the body, and when the plunger is in the first position, the second valve body is opened in conjunction with the plunger pin, and when the plunger is in the second position, the second valve body is opened. The length of the plunger pin, the distance between the first and second valve seats, and the distance from the fitting part of the case with the core to the abutment surface of the valve body are determined so that the second valve body closes. The length of the plunger and the length of the core are set and configured.

A small solenoid valve for achieving the object of the second invention further includes, in addition to the first invention, a sloped surface at the tip of the valve body and a sliding surface on the side surface that determines a movement range. a push pin having a groove, which is airtightly inserted into the valve body and biased in the protrusion direction; a stopper pin which is inserted into the sliding groove; and the plunger, which has an inclined surface that engages with the inclined surface. A manual operating device is provided which includes a push-up pin movable in the direction of movement of the electromagnetic device, and by pushing the push pin when the electromagnetic device is de-energized, the plunger is pushed up via the push-up pin, and the electromagnetic device becomes energized. It is configured to allow you to perform the same operations as before.

A small solenoid valve for achieving the object of the third invention includes an import, an out port, an exhaust port, a first valve seat having an opening communicating with the import, and an opening communicating with the exhaust port. a second valve seat having a second valve seat, a first space surrounding the first valve seat, and a second space surrounding the second valve seat;
a valve body having a passage that communicates the first space and the second space with an out port;
a first valve body that can open and close the opening of the first valve seat; a second valve body that can open and close the opening of the second valve seat; and the first valve body and the second valve. an interlocking member for interlocking the body, and a first position in which the first valve body is provided at the tip thereof and the first valve body closes the first valve seat and a second position in which the first valve seat is opened. an electromagnetic device having a plunger whose movement is controlled in a second position, the upper end surface of the valve body and the surface having the opening of the first valve seat being provided on the same plane; A through hole is provided in the valve body at a position connecting the plunger and the second valve body for an interlocking member that interlocks the valve body with the first valve body; The lower end surface of the plunger is provided on the same plane, and the electromagnetic device includes a lower core that contacts the upper end surface of the valve body, a yoke that airtightly fits into the lower core, and a coil wound around the yoke. The yoke comprises a core that is airtightly inserted into the upper end of the yoke, and a case that fits into the core and the lower iron core on the lower side, and whose lower edge abuts the valve body. a magnetic circuit is formed by the lower iron core, the case, and the core; and the electromagnetic device and the valve body are coupled by the lower edge of the case being in contact with the valve body and using two or more screws. The interlocking member is a plunger pin inserted into the through hole, and the upper end surface of the plunger pin is in contact with the lower end surface of the plunger, and the lower end surface is connected to the second valve body. The second valve body is in contact with the upper end surface of the body, and when the plunger is in the first position, the second valve body is opened in conjunction with the plunger pin, and when the plunger is in the second position, the second valve body is opened. The length of the plunger pin, the distance between the first and second valve seats, and the distance from the fitting part of the case with the core to the abutment surface of the valve body are determined so that the second valve body closes. length, the length of the plunger and the core are set, the valve body has a diaphragm that expands and contracts due to the pressure in the space surrounding the second valve body, and the first and second valve bodies move. a piston movable in the same direction as the diaphragm and pushed downward by the diaphragm; a third valve seat into which the piston is inserted and which has an opening communicating with another exhaust port; and an opening in the third valve seat. a third valve body that is biased by a spring in a direction to close the piston and comes into contact with the piston; a fourth valve seat that is opened and closed by the lower end surface of the third valve body and has an opening that communicates with the import; Another out port communicating with a third space surrounding the third and fourth valve seats is provided.

A small electromagnetic valve for achieving the object of the fourth invention further includes, in addition to the third invention, a slanted surface at the tip of the valve body and a sliding surface on the side surface for determining a movement range. a push pin having a groove, which is airtightly inserted into the valve body and biased in the protrusion direction; a stopper pin which is inserted into the sliding groove; and the plunger, which has an inclined surface that engages with the inclined surface. A manual operating device is provided which includes a push-up pin movable in the direction of movement of the electromagnetic device, and by pushing the push pin when the electromagnetic device is de-energized, the plunger is pushed up via the push-up pin, and the electromagnetic device becomes energized. It is configured to allow you to perform the same operations as before.

(Example) Hereinafter, the present invention will be described in more detail with reference to the drawings and the like.

FIG. 1 is a partially cutaway front view of an embodiment of the invention set forth in claim 1 (first invention) and the invention set forth in claim 3 (second invention). .

FIG. 2 is a side sectional view of FIG. 1.

FIG. 3 is an exploded perspective view showing the main parts of the valve body shown in FIG. 1.

FIGS. 4 and 5 are diagrams for explaining the operation of the embodiment, with FIG. 4 showing the state when the power is not energized, and FIG. 5 showing the state when the power is energized.

In this small solenoid valve, the valve body and the solenoid device can be separated.

The small solenoid valve shown in FIG. 1 has a three-port valve body.

The valve body 10 has an inlet 11, an outport 15, and an exhaust port 20. The import 11 communicates via a passage 12 with an opening 14 provided in the first valve seat 13 . One side of the outport 15 communicates with a space 17 in which the first valve seat 13 is provided via a passage 16.
The other is a space 19 in which a second valve seat 18 is provided.
is connected to. The exhaust port 20 communicates via a passage 21 with an opening 22 provided in the second valve seat 18 . The first valve 23 is provided at the tip of the plunger 24, and the opening 14 of the first valve seat 13 can be opened and closed by moving the plunger 24 in the axial direction. A hole is provided in the axial direction at the tip of the plunger 24, a through hole is provided in the radial direction at a position including the hole, and synthetic rubber is poured into this space to form the first valve 23. The valve body 10 is provided with two through holes 25 and 26 that connect the space 17 and the space 19 in a direction parallel to the axis of the plunger 24. Plunger pins 27 and 28 are inserted into the through holes 25 and 26, and the upper ends of the plunger pins 27 and 28 are in contact with the lower end of the plunger 24, and the lower ends are in contact with the second valve 29 (Fig. 3). reference). The second valve 29 is biased upward by a spring 30, and the space 19 is further sealed by a lid 31. Note that if the exhaust port 20 is sealed with a steel ball 65, it can also be used as a two-port valve body.

An electromagnetic device for actuating the plunger 24 is provided on the upper side of the valve body 10.

A coil 35 is wound around the yoke 34, a stepped portion 36 is provided inside the yoke 34, and a spring 38 is inserted between the stepped portion 37 of the plunger 24 and urges the plunger 24 downward. ing.

A lower core 40 is placed on the upper surface of the space 17 of the valve body 10 via an O-ring 39. The fitting portion of the yoke 34 is inserted into the fitting portion 41 of the lower core 40, and an O-ring 43 is inserted between the groove portion 42 and the lower core 40 to maintain airtightness. York 3
A core 44 is inserted from above through an O-ring 45, and an upper end 46 of the core 44 is fitted into a circular hole 48 of a case 47. case 47
The lower core 40 is inserted into the lower inner side of the lower end surface 4
9 is in contact with the upper end of the valve body 10. The case 47 is screwed to the valve body 10 with two screws 50 and 51 through holes in the lower core 40. A lead wire 53 connected to the coil 35 is led out from a wiring port 52 of the case 47.

The push pin 54 is used for checking the cylinder etc. connected to this solenoid valve at the time of starting.
It consists of a groove part 55, a step part 56, and an inclined part 57 at the tip, and is inserted into a hole 58 of the valve body 10.
A spring 59 is inserted into the stepped portion 56, and a stopper pin 61 prevents the push pin 54 from being removed from a hole 60 opened from above the valve body 10 in the groove portion 55. A pin 62 having a vertically inclined portion is inserted into the passage 16, and the lower inclined portion 63 and the inclined portion 57 of the push pin 54 are in contact with each other. The upper surface of the pin 62 faces the lower surface of the plunger 24 with a gap therebetween.

Next, the operation of the small solenoid valve will be explained.

When not energized, the plunger 24 is biased by the spring 38 and closes the first valve seat 13 by the first valve 23, as shown in FIG. Therefore, the air pressure input from the import 11 is stopped by the first valve 23. At this time, the second valve 29 resists the biasing force of the spring 30 and moves the plunger pins 27 and 28.
, the second valve seat 18 is opened. Therefore, air pressure from out port 15 is discharged to the atmosphere through exhaust port 20.

When energized, the magnetic force of the coil 35 causes the plunger 24 to rise against the urging force of the spring 38 until the upper end surface of the plunger 24 comes into contact with the lower end surface of the core 44, as shown in FIG. As the plunger 24 rises, the first valve 23 opens the first valve seat 13 and directs the air pressure from the inlet 11 to the outport 15. At this time, the plunger pin 27,
28 is raised by the biasing force of the spring 30 since the plunger 24 is raised, and the second valve 29 closes the second valve seat 18, so this air pressure is not exhausted from the exhaust port 20.

When the power is not applied, air pressure from the out port 15 is normally released to the atmosphere through the exhaust port 20. Now, when the push pin 54 is pushed in as far as it can go, the inclined portion 57 of the push pin 54 is pushed into the pin 6.
2 upward, and the plunger 24 is released by the spring 38.
The air pressure from the import 11 can be guided to the out port 15 by pushing up against the urging force of the valve 23 to separate the first valve 23 from the first valve seat 13. At this time, the plunger pins 27 and 28 are connected to the plunger 2.
4, the second valve 29 is not in contact with spring 3.
0 is pressed against the second valve seat 18,
Air pressure is not exhausted from the exhaust port 20.

a shown in Fig. 1 of the small solenoid valve in this example.
A preferred example of the dimensions of ~g is shown below.

a=11.8mm b=11.5mm c=0.3mm d=32.3mm e=19.4mm f=0.4mm g=12.5mm FIG. It is a partially cutaway front view of the embodiment of the invention described in item 6 (fourth invention).

FIG. 7 is a side sectional view of FIG. 6.

FIGS. 8 and 9 are diagrams for explaining the operation of the embodiment, in which FIG. 8 shows the state when the power is not energized, and FIG. 9 shows the state when the power is energized.

This small solenoid valve also allows the valve body and electromagnetic device to be separated.

The valve body 70 has an import 71, a first out port 102, a second out port 75, a first exhaust port 104, and a second exhaust port 80.
have. The import 71 communicates via a passage 72 with an opening 74 provided in the first valve seat 73 . One side of the second outport 75 communicates with a space 77 in which the first valve seat 73 is provided via a passage 76, and the second outport 75 communicates with the second valve seat 78 on the other side.
It communicates with a space 79 in which a space 79 is provided. The second exhaust port 80 communicates via a passage 81 with an opening 82 provided in the second valve seat 78 .
The second valve 23 is provided at the tip of the plunger 24, and when the plunger 24 moves in the axial direction,
The opening 74 of the first valve seat 73 can be opened and closed. The valve body 70 is provided with two through holes 85 and 86 that connect the space 77 and the space 79 in a direction parallel to the axis of the plunger 24. Through hole 8
Plunger pins 87 and 88 are inserted into 5 and 86, and the upper ends of the plunger pins 87 and 88 contact the lower end of the plunger 24, and the lower ends of the second valve 8
It is in contact with 9. The second valve 89 is biased upwardly by a spring 90, and the space 79 is also
2 and is sealed by a diaphragm 91. Insert 93 is O-ring 94, 95, 96
It is inserted into the valve body 70 through the plate 92 and the diaphragm 91. A piston 97 that contacts the diaphragm 91 is inserted into the insert 93.
A third valve 98 is provided at the lower end of 7. The third valve 98 is biased upward by a spring 99, and the lid body 1
00, the space 101 is sealed. Valve body 7
A first outport 102 provided at 0 communicates with the space 101 via a passage 103 provided in the insert 93. First exhaust port 104
communicates with a through hole 105 into which the piston 97 is loosely fitted, and the through hole 105 communicates with a third valve seat 106.
It communicates with an opening 107 provided in the. The opening 109 of the fourth valve seat 108, which is provided facing the lower surface of the third valve 98, is connected to the passage 111 of the lid body 100.
The passage 112 is connected to the outer periphery, and the passage 113 is connected to the import 71 through the valve body 70 . In addition, passage 112
is sealed with a steel ball 114.

The same electromagnetic device and push pin as in the first embodiment can be used.

Next, the operation of the small solenoid valve will be explained.

When the current is not energized, the plunger 24 is biased by the spring 38 and closes the first valve seat 73 by the first valve 23, so that the import 7
Air pressure input from 1 is stopped by a first valve 23. At this time, the second valve 89 is pushed down by the plunger pins 87 and 88 to the second valve seat 7.
8 is open, air pressure from the second out port 75 is released to the atmosphere from the second exhaust port 80. Therefore, the pressure in the space 79 becomes equal to atmospheric pressure, the diaphragm 91 does not expand, and the piston 97 is urged upward by the spring 99.
Therefore, the third valve 98 closes the third valve seat 106, but the fourth valve seat 108 is opened, so that the air pressure from the inlet 71 is outputted from the first outport 102 via the passage 113. .

When energized, the magnetic force of the coil 35 causes the plunger 24 to rise against the urging force of the spring 38 until the upper end surface of the plunger 24 comes into contact with the lower end surface of the core 44, as shown in FIG. As the plunger 24 rises, the first valve 23 opens the first valve seat 73 and directs the air pressure from the inlet 71 to the second outport 75 . At this time, the plunger 24
is rising, the second valve 89 rises due to the biasing force of the spring 90, and the second valve 89 closes the second valve seat 78, so air pressure is not guided to the exhaust port 80 and the space 79 pressure increases. Therefore, the diaphragm 91 expands and pushes down the piston 97 against the biasing force of the spring 99. piston 9
7, the third valve 98 is moved to the third valve seat 10.
6 is opened and the fourth valve seat 108 is closed, so that air pressure from the first outport 102 is guided to the first exhaust port 104.

(Effects of the Invention) As described in detail above, according to the first invention, it is possible to provide a small electromagnetic valve having a three-port valve body and having a structure that allows easy dimensional control.

According to a second aspect of the present invention, there is provided a small solenoid valve that allows the same operation as when the electromagnetic device is energized by pushing a push pin when the electromagnetic device of the small electromagnetic valve is not energized. be able to.

According to the third invention, it is possible to provide a small solenoid valve having a 5-port valve body with a structure that allows easy dimensional control.

According to the fourth invention, when the electromagnetic device of the small solenoid valve according to the third invention is not energized, by pushing the push pin, it is possible to perform the same operation as when the electromagnetic device is energized. A small solenoid valve can be provided.

These allow the solenoid valve to be made smaller while maintaining reliability in opening and closing the valve. In other words, both 3-port and 5-port valves can be made small with a width of 15 mm, and φ4~
Ideal for operating φ15 pen cylinders, etc. The electromagnetic device can also be miniaturized, operating at a low current of 24 V DC and 83 mA, compatible with electronic control, and can be driven directly. Additionally, the temperature rise was small and there were no burnout accidents.

In addition, the electromagnetic device can be easily attached and detached from the valve body.
Moreover, it can be used for either 3-port or 5-port valve bodies. Therefore, it is easy to replace the solenoid and change the direction of the lead wire, and it is also possible to install a mixture of 3-port and 5-port valves as manifold valves. Since the exhaust ports are all in one place, exhaust processing can be done easily.

Furthermore, the provision of a manual operating device has made it easier to start and inspect the engine.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view of an embodiment of the invention set forth in claim 1 (first invention) and the invention set forth in claim 3 (second invention). . FIG. 2 is a side sectional view of FIG. 1. Third
The figure is an exploded perspective view showing the main parts of the valve body shown in FIG. 1. Figures 4 and 5
The figures are diagrams for explaining the operation of the embodiment, in which FIG. 4 shows the state when the power is not energized, and FIG. 5 shows the state when the power is energized. FIG. 6 is a partially cutaway front view of an embodiment of the invention set forth in claim 4 (third invention) and the invention set forth in claim 6 (fourth invention). . FIG. 7 is a side sectional view of FIG. 6. FIGS. 8 and 9 are diagrams for explaining the operation of the embodiment, in which FIG. 8 shows the state when the power is not energized, and FIG. 9 shows the state when the power is energized. 10...Valve body, 11...Import, 1
2... Passage, 13... First valve seat, 14... Opening, 15... Outport, 16... Passage, 17
...Space, 18...Second valve seat, 19...Space,
20... Exhaust port, 21... Passage, 22... Opening, 23... First valve, 24... Plunger, 2
5...Through hole, 26...Through hole, 27...Plunger pin, 28...Plunger pin, 29...Second valve, 30...Spring, 31...Lid, 32...Mounting hole, 33... ...Mounting hole, 34...Yoke, 35...
...Coil, 36...Step part, 37...Step part, 38...
...Spring, 39...O-ring, 40...Lower iron core,
41... Fitting portion, 42... Groove, 43... O-ring, 44... Core, 45... O-ring, 46...
Upper end, 47... Case, 48... Circular hole, 49
...Lower end surface, 50...Screw, 51...Screw, 52
... Wiring port, 53 ... Lead wire, 54 ... Push pin, 55 ... Groove, 56 ... Step, 57 ... Slope, 58 ... Hole, 59 ... Spring, 60 ... Hole, 6
1... Stopper pin, 62... Pin, 63... Inclined portion, 65... Steel ball, 70... Valve body, 71
...import, 72...passage, 73...first valve seat, 74...opening, 75...second outport, 76...passage, 77...space, 78...second valve seat , 79... Space, 80... Second exhaust port, 81... Passage, 82... Opening, 85... Through hole, 86... Through hole, 87... Plunger pin,
88...Plunger pin, 89...Second valve, 9
0... Spring, 91... Diaphragm, 92... Plate, 93... Insert, 94... O-ring, 95... O-ring, 96... O-ring, 97
... Piston, 98 ... Third valve, 99 ... Spring, 100 ... Lid, 101 ... Space, 102 ...
...first outport, 103...passage, 104
...First exhaust port, 105...Through hole, 10
6...Third valve seat, 107...Opening, 108...
Fourth valve seat, 109...opening, 111...passage,
112... passage, 113... passage, 114... steel ball.

Claims (1)

[Scope of Claims] 1. An import, an out port, an exhaust port, a first valve seat having an opening communicating with the import, a second valve seat having an opening communicating with the exhaust port, A valve body having a first space surrounding a first valve seat, a second space surrounding the second valve seat, and a passage communicating the first space and the second space with an out port. a first valve body that can open and close the opening of the first valve seat; and a second valve body that can open and close the opening of the second valve seat;
an interlocking member that interlocks the first valve body and the second valve body; a first valve body that is provided at a tip of the first valve body and closes the first valve seat by the first valve body; and an electromagnetic device having a plunger that is controlled to move to a second position that opens the first valve seat, the upper end surface of the valve body and the surface that has the opening of the first valve seat. and a through hole is provided in the valve body at a position connecting the plunger and the second valve body for an interlocking member that interlocks the second valve body with the first valve body. The first valve body and the lower end surface of the plunger are provided on the same plane, and the electromagnetic device is airtightly fitted into a lower core that abuts the upper end surface of the valve body and the lower core. a yoke, a coil wound around the yoke, a core airtightly inserted into the upper end of the yoke, a core that fits into the core and a lower side that fits with the lower iron core, and a lower edge of which is connected to the valve body. The yoke, the lower iron core, the case, and the core form a magnetic circuit, and the electromagnetic device and the valve body are coupled so that the lower edge of the case The interlocking member is a plunger pin inserted into the through hole, and the upper end surface of the plunger pin is in contact with the valve body and is screwed to the valve body with two or more screws. the lower end surface is in contact with the upper end surface of the second valve body, and when the plunger is in the first position, the second valve body is opened in conjunction with the plunger pin; The length of the plunger pin, the distance between the first and second valve seats, and the fit of the case with the core so that the second valve body closes when the plunger is in the second position. A small solenoid valve characterized in that a length from a joint to a contact surface of the valve body and a length of the plunger and the core are set. 2. The small solenoid valve according to claim 1, wherein the plunger is biased to the first position by a spring. 3. An import, an out port, an exhaust port, a first valve seat having an opening communicating with the import, a second valve seat having an opening communicating with the exhaust port, and the first valve seat. a valve body having a first space surrounding the second valve seat, a second space surrounding the second valve seat, and a passage communicating the first space and the second space with an out port; a first valve body that can open and close the opening of the valve seat; a second valve body that can open and close the opening of the second valve seat;
an interlocking member that interlocks the first valve body and the second valve body; a first valve body that is provided at a tip of the first valve body and closes the first valve seat by the first valve body; an electromagnetic device having a plunger that is biased by a spring to a position where the plunger is moved to a second position that opens the first valve seat; The plunger of the valve body and the second valve body are provided on the same plane with the surface having the opening of the valve seat, and the plunger of the valve body and the second valve body are provided as an interlocking member for interlocking the second valve body with the first valve body. The first valve body and the lower end surface of the plunger are provided on the same plane, and the electromagnetic device has a lower iron core that contacts the upper end surface of the valve body, a yoke that is hermetically fitted to the side core; a coil wound around the yoke; a core that is hermetically inserted into the upper end of the yoke; and a case whose lower end edge is in contact with the valve body, and the yoke, the lower iron core, the case and the core form a magnetic circuit, and the electromagnetic device and the valve body are coupled to each other. 2, the lower edge of the case is in contact with the valve body;
The interlocking member is a plunger pin inserted into the through hole, and the upper end surface of the plunger pin is in contact with the lower end surface of the plunger, and the lower end surface is in contact with the lower end surface of the plunger. The second valve body is in contact with the upper end surface of the second valve body, and when the plunger is in the first position, the second valve body is opened in conjunction with the plunger pin, and the plunger is in the second position. the length of the plunger pin, the distance between the first and second valve seats, so that the second valve body closes when
and the length from the fitting part of the case with the core to the contact surface of the valve body, the length of the plunger and the core are set, and the tip is slidably inserted into the valve body. a push pin that has an inclined surface on the side surface and a sliding groove that determines a movement range on the side surface, is airtightly inserted into the valve body and is biased in a protruding direction; and a stopper pin that is inserted into the sliding groove; A manual operating device including a push-up pin having an inclined surface that engages with the inclined surface and movable in the direction of movement of the plunger is provided, and the push-up pin is moved by pushing the push pin when the electromagnetic device is de-energized. A small solenoid valve characterized in that the plunger is pushed up through the solenoid valve so that the electromagnetic device can perform the same operation as when the electromagnetic device is energized. 4 an import, an out port, an exhaust port, a first valve seat having an opening communicating with the import, a second valve seat having an opening communicating with the exhaust port, and the first valve seat. a valve body having a first space surrounding the second valve seat, a second space surrounding the second valve seat, and a passage communicating the first space and the second space with an out port; a first valve body that can open and close the opening of the valve seat; a second valve body that can open and close the opening of the second valve seat;
an interlocking member that interlocks the first valve body and the second valve body; a first valve body that is provided at a tip of the first valve body and closes the first valve seat by the first valve body; and an electromagnetic device having a plunger that is controlled to move to a second position that opens the first valve seat, the upper end surface of the valve body and the surface that has the opening of the first valve seat. and a through hole is provided in the valve body at a position connecting the plunger and the second valve body for an interlocking member that interlocks the second valve body with the first valve body. The first valve body and the lower end surface of the plunger are provided on the same plane, and the electromagnetic device is airtightly fitted into a lower core that abuts the upper end surface of the valve body and the lower core. a yoke, a coil wound around the yoke, a core airtightly inserted into the upper end of the yoke, a core that fits into the core and a lower side that fits with the lower iron core, and a lower edge of which is connected to the valve body. The yoke, the lower iron core, the case, and the core form a magnetic circuit, and the electromagnetic device and the valve body are coupled so that the lower edge of the case The interlocking member is a plunger pin inserted into the through hole, and the upper end surface of the plunger pin is in contact with the valve body and is screwed to the valve body with two or more screws. the lower end surface is in contact with the upper end surface of the second valve body, and when the plunger is in the first position, the second valve body is opened in conjunction with the plunger pin; The length of the plunger pin, the distance between the first and second valve seats, and the fit of the case with the core so that the second valve body closes when the plunger is in the second position. The length from the joint to the contact surface of the valve body and the length of the plunger and the core are set, and the valve body is a diaphragm that expands and contracts due to the pressure of the space surrounding the second valve body. , a piston movable in the same direction as the movement direction of the first and second valve bodies and pushed down by the diaphragm; and a third valve body having an opening into which the piston is inserted and which communicates with another exhaust port. a valve seat, a third valve body that is urged by a spring in a direction to close the opening of the third valve seat and comes into contact with the piston, and is opened and closed by a lower end surface of the third valve body and communicates with the import. 1. A small electromagnetic valve, comprising: a fourth valve seat having an opening; and another out port communicating with a third space surrounding the third and fourth valve seats. 5. The small solenoid valve according to claim 4, wherein the plunger is biased to the first position by a spring. 6 an import, an outport, an exhaust port, a first valve seat having an opening communicating with the import, a second valve seat having an opening communicating with the exhaust port, and the first valve seat. a valve body having a first space surrounding the second valve seat, a second space surrounding the second valve seat, and a passage communicating the first space and the second space with an out port; a first valve body that can open and close the opening of the valve seat; a second valve body that can open and close the opening of the second valve seat;
an interlocking member that interlocks the first valve body and the second valve body; a first valve body that is provided at a tip of the first valve body and closes the first valve seat by the first valve body; an electromagnetic device having a plunger that is biased by a spring to a position where the plunger is moved to a second position that opens the first valve seat; The plunger of the valve body and the second valve are provided on the same plane with the surface having the opening of the valve seat, and the plunger of the valve body and the second valve are provided as an interlocking member for interlocking the second valve body with the first valve body. a through hole is provided at a position where the valve body is connected; a lower end surface of the first valve body and the plunger are provided on the same plane; and the electromagnetic device includes a lower iron core that contacts the upper end surface of the valve body; a yoke that is hermetically fitted to the lower core; a coil wound around the yoke; a core that is hermetically inserted into the upper end of the yoke; the yoke, the lower iron core, the case and the core form a magnetic circuit, and the electromagnetic device and the valve body The connection is made when the lower edge of the case comes into contact with the valve body.
The interlocking member is a plunger pin inserted into the through hole, and the upper end surface of the plunger pin is in contact with the lower end surface of the plunger, and the lower end surface is in contact with the lower end surface of the plunger. The second valve body is in contact with the upper end surface of the second valve body, and when the plunger is in the first position, the second valve body is opened in conjunction with the plunger pin, and the plunger is in the second position. the length of the plunger pin, the distance between the first and second valve seats, so that the second valve body closes when
and the length from the fitting part of the case with the core to the contact surface of the valve body and the length of the plunger and the core are set, and the valve body a diaphragm that expands and contracts depending on the pressure of the surrounding space; a piston that is movable in the same direction as the moving direction of the first and second valve bodies and is pushed down by the diaphragm; and another exhaust port into which the piston is inserted. a third valve seat having an opening communicating with the third valve seat, a third valve body that is biased by a spring in a direction to close the opening of the third valve seat and comes into contact with the piston, and a bottom of the third valve body. a fourth valve seat having an opening opened and closed by an end surface and communicating with the inlet; and another outport communicating with a third space surrounding the third and fourth valve seats; a push pin that is slidably inserted and has an inclined surface at its tip and a sliding groove that determines a movement range on a side surface, and is airtightly inserted into the valve body and is biased in a projecting direction; and the sliding groove. A manual operating device is provided, which includes a stopper pin inserted into the slanted surface, and a push-up pin having an inclined surface that engages with the inclined surface and movable in the moving direction of the plunger, and when the electromagnetic device is de-energized, the push-up pin A small solenoid valve characterized in that by pushing up the plunger through the push-up pin, the solenoid device can perform the same operation as when energized.