JPS5969580A - Small solenoid valve - Google Patents

Abstract

PURPOSE:To facilitate mount/dismount by providing first valve to be opened/ closed through a plunger and second valve linked with first valve through a plunger pin on a small solenoid valve of poppet type for operating more than two valves through single solenoid. CONSTITUTION:Upon supply power to a coil 35, a splunger 24 is attracted against a spring 38 to open a valve seat 13 of first valve 23 thus to lead air pressure from an in-port 11 to an out-port 15. While a plunger pin is lifted by a spring 30 to close a valve seat 18 of second valve 29 to prevent discharge of air pressure through a discharge port 20. When power is not supplied, air pressure from the out port 15 is dscharged through a discharge port 20 to atmosphere. When a push pin 54 is pushed to the maximum, the inclined section 57 of the push pin 54 will push up a pin 62 to move the plunger upward. Consequently the valve 23 is opened to lead air from the in-port 11 to the out port 15.

Description

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

(Prior Art to the Invention) The basic structure of this type of device is US Pat. No. 3,815°633
has been disclosed.

A feature of the device disclosed here is that when one of the series valves is operated, the other valve is operated via a plurality of rods that are slidable through 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 is provided with two through holes parallel to the movement direction of the first and second valve bodies and between each valve body, and each through hole has a rod attached to the sliding tube (13). It has been inserted. The rod is in contact with 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 an electromagnetic device. .

When the electromagnetic device is not 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 was made based on the above-mentioned device, but
In order to miniaturize such a device, there are the following problems.

That is, when miniaturizing such a solenoid valve, it becomes difficult to manage the dimensions of each component. For operation reliability, it is important to control the dimensions related to the interlocking operation of the first valve and the second valve (14), and the distance between the valve seats δ11 and the lot length must be manufactured with precision. There is a need.

However, in the above-mentioned apparatus, 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, improving responsiveness and reducing power consumption. 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, the electromagnetic device and the threaded part of the valve body fix both of them, so the movement range 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.

(Object of the Invention) An object of the present invention is to provide a compact solenoid valve having a structure that allows easy dimensional control when downsizing this type of three-boat solenoid valve.

Another object of the present invention is to provide a small solenoid valve having a structure that allows the electromagnetic device to be easily removed from the valve body, and allows for easy positioning of the valve body and the electromagnetic device during installation.

Still another object is to provide a small solenoid valve having a structure of five valve bodies operated by electromagnetic devices of the same structure.

Still another object is to provide a small solenoid valve having a structure that includes a manual operation device that can be used for starting and inspecting such a solenoid valve.

(Summary of the Invention) In order to achieve the above object, the small solenoid valve according to the present invention has the following features:
Basically, an inlet 1-, an outboard, an exhaust boat, a first valve seat having an opening communicating with the inboard, a second valve seat having an opening communicating with the exhaust boat, A valve having a first space surrounding the first valve seat, a second space surrounding the second valve seat, and a passage communicating the first space and the second space with an outboard. a main body, a first valve body capable of opening and closing an opening of the first valve seat, a second valve body capable of opening and closing an opening of the second valve seat, the first valve body and the first valve body; an interlocking member for interlocking two valve bodies; the first valve body is provided at a tip; a first position in which the first valve body closes the first valve seat; and a first position in which the first valve seat is opened; and an electromagnetic device having a plunger whose movement is controlled in a second position, wherein the upper end surface of the valve body and the surface having the opening of the first valve seat are 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 for interlocking the second valve body with the first valve body; The lower end surfaces of the plunger are provided on the same plane, and the electromagnetic device is wound around a lower iron core that contacts the upper end surface of the valve body, a yoke that airtightly fits into the lower iron core, and one yoke. a coil, a core airtightly inserted into the upper end of the yoke, a case fitted with the core and fitted with the lower iron core on the lower side, the lower edge of which abuts against 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 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 fixed to the valve body with two or more screws. is in contact with the upper end surface of the second valve body, and when the plunger is in the first position, opens the second valve body in conjunction with the plunger pin, and the plunger opens the second valve body in conjunction with the plunger pin. 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 valve body are such that the second valve body closes when the second valve body is in the position. The length to the contact surface of the plunger and the length of the plunger and the core are set.

Furthermore, in order to change the three-boat valve body configured as described above to a five-boat valve body, the valve body (18) has a diaphragm that expands and contracts depending on the pressure of the space surrounding the second valve body, and a diaphragm that expands and contracts according to the pressure of the space surrounding the second valve body, and a piston that is movable in the same direction as the movement direction of the second valve body and is pushed down by the diaphragm;

a third valve seat having an opening into which the piston is inserted and communicating with another exhaust boat; and a third valve 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. a fourth valve seat having an opening that is opened and closed by the lower end surface of the third valve body and communicates with the import; and another valve seat that communicates with a third space surrounding the third and fourth valve seats. An outboard is provided.

In addition, the valve bodies of the 3rd boat and 5th boat include:
A push pin that is slidably inserted into the valve body, has a sloped surface at the tip and a sliding groove that determines the movement range on the side, is airtightly inserted into the valve body, and is biased in the projecting direction. 5. A manual operating device is provided which includes a stopper pin inserted into the sliding groove and a push-up pin having an inclined surface that engages with the inclined surface and is movable in the moving direction of the plunger. 5. When the push pin is pushed, the plunger is pushed back through the push pin, allowing the electromagnetic device to perform the same operation as when energized.

According to the above structure, the object of the present invention can be completely achieved.

(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 a first embodiment of a small solenoid valve according to the present 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.

4 and 5 are diagrams for explaining the operation of the first 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.

The small electromagnetic valve according to the present invention can be divided into a valve body and an electromagnetic device. The first embodiment is an example of a three-boat valve body.

The valve body 10 has an inboard 11, an outboard 15, and an exhaust boat 20. An opening 1 provided in the first valve seat 13 via an import 11 passage 12
It is connected to 4. Arara 1 - port 15 is one side passage 1
6 to a space 17 in which a first valve seat 13 is provided, and the other to a space 19 in which a second valve seat 18 is provided. The exhaust valve 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. Valve body 1o
Two through holes 25 and 26 connecting the spaces 17 and 19 are provided in a direction parallel to the axis of the plunger 24. A plunger pin 27.28 is inserted into the through hole 25.26, and the upper end of the plunger pin (21) 27.28 is in contact with the lower end of the plunger 24, and the lower end is in contact with the second valve 29 ( (See Figure 3). 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 boat 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 step 36 is provided inside the plunger 24, and a spring 3 is inserted between the step 36 and the step 37 of the plunger 24 to urge the plunger 24 downward.

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. A core 44 is inserted from above the yoke 34 via an O-ring 45, and the upper end 46 of the core 44 is fitted into a circular hole 48 of a case (22) 47. The lower core 40 is inserted into the lower inner side of the case 47, and the lower end surface 49 is in contact with the upper end of the valve body 10. Case 47 is two pieces 5
0.51, and is screwed onto the valve body 10 through a hole in the lower iron core 4o.

The lead wire 53 connected to the coil 35 is connected to the case 47
It is led out from the wiring port 52 of.

The push pin 54 is used for checking the cylinder etc. connected to this solenoid valve at the time of starting, and consists of a section a 55, a stepped section 5G, and an inclined section 57 at the tip, and is inserted into the hole 58 of the valve body 10. has been done.

A spring 59 is inserted into the stepped portion 56, and the push pin 54 is prevented from being pulled out by a hole 6o opened from above the valve body 10 in the groove portion 55 through a buckle pin 61. Passage 1
A pin 62 having a vertically inclined portion is inserted into the pin 6, and the lower inclined portion 63 and the inclined portion 57 of the push hinge 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.

Next, the operation of the first embodiment will be explained.

When the current is not energized, the plunger 24 is biased by the spring 38 and the first valve 23 pushes the first valve seat 13 as shown in FIG.
is closed. Therefore, the air pressure input from the inboard 11 is stopped by the first valve 23. At this time,
The second valve 29 is pushed down by the plunger pin 27.28 against the biasing force of the spring 30, so that the second valve seat 18 is opened. Therefore, the air pressure from the out port 15 is released to the atmosphere through the exhaust port 20.

When energized, the magnetic force of the coil 35 causes the plunger 24 to rise against the biasing 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. By the second rise of the plunger 24, the first valve 23
opens the first valve seat 13 and directs the air pressure from the inlet 1-11 to the outport 15. At this time, the plunger bins 27 and 28 have the plunger 24 raised, so
This air pressure is not exhausted from the exhaust port 20 because it rises due to the biasing force of the spring 30 and the second valve 29 closes the second valve seat 18 .

When the power is not applied, the 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 much as possible, the inclined portion 57 of the push pin 54 pushes up the pin 62, pushes up the plunger 24 against the biasing force of the spring 38, and moves the plunger 24 from the first valve seat 13 to the first valve seat 13. By releasing the valve 23, the air pressure from the import 11 can be guided to the boat 15. At this time, since the plunger pins 27 and 28 are not in contact with the plunger 24, the second valve 29 is pressed against the second valve seat 18 by the spring 30, and air pressure is not exhausted from the exhaust port 20.

A preferred example of the small solenoid valve according to this embodiment having dimensions of 3 to g shown in FIG. 1 is shown below.

a = 11.8 m1 b = 11.5 c = Q, 3 n + d = 3.2.3 e = 1 9.4 ** (25) f -0,4vs* g = 12.5 mm 6th The figure is a partially cutaway front view of a second embodiment of a small solenoid valve according to the present invention.

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

8 and 9 are diagrams for explaining the operation of the second 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.

Since the small solenoid valve according to the present invention can be separated into a valve body and an electromagnetic device, the valve body of the 3-port small solenoid valve shown in the first embodiment is replaced with the 5-port valve body shown in the second embodiment. If used, electromagnetic devices can be used in common. In the second embodiment, the valve body will be mainly explained.

The valve body 70 has an inboard 71, a first outboard 102, a second outboard 75, and a first exhaust port 1.
04 and a second exhaust port 80. The import 71 communicates with the opening lower 4 provided on the first valve seat 73 via a passage 72 . The second outlet door 5 has a passage (26) on one side and a space 7 in which the first valve seat 73 is provided via a passage 76.
7, and the other side communicates with a space 79 in which a second valve seat 78 is provided. The second exhaust port 80 communicates via a passage 81 with an opening 82 provided in the second valve seat 78 .

The first valve 23 is provided at the tip of the plunger 24, and movement of the plunger 24 in the axial direction causes the first valve seat 7 to open.
3 can be opened and closed. Valve body 70
Two through holes 85 and 86 connecting the space 77 and the space 79 are provided in a direction parallel to the axis of the plunger 24. A plunger pin 87.88 is inserted into the through hole 85.86, and the upper end of the plunger pin 87.88 abuts the lower end of the plunger 24, and the lower end abuts the second valve 89. The second valve 89 is urged upward by a spring 90, and the space 79 is further sealed by a diaphragm 91 via a plate 92.

The insert 93 is inserted into the valve body 70 via O-rings 94, 95, 96, and fixes the plate 92 and diaphragm 91. A piston 97 that contacts the diaphragm 91 is inserted into the inserter I-93, and a third valve 98 is provided at the lower end of the piston 97. The third valve 9B is urged upward by a spring 99, and a space 101 is sealed with a lid 100. A first outboard 102 provided in the valve body 70 communicates with the space 101 via a passage 103 provided in the insert 93. The first exhaust port 104 communicates with a through hole 105 into which a piston 97 is loosely fitted.
05 communicates with an opening 107 provided in the third valve seat 106. The opening 109 of the fourth valve seat 108 provided opposite the lower surface of the third valve 98 is connected to the passage 111 of the insert 93 and the passage 1 of the valve body 70 via the passage 110.
12 and 113, the passage 111 is connected to the outer periphery, and the passage 1
13 is connected to the inboard 71. In addition, aisle 1
12 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 second embodiment will be explained.

When the current is not energized, as shown in FIG.
is closed, the air pressure input from the inboard 71 is stopped by the first valve 23. At this time, the second valve 89 is pushed down by the plunger pins 87 and 88 and the second valve seat 78 is open, so that the second outport 1
- Air pressure from 75 is released to the atmosphere through a second exhaust port 80. Therefore, the pressure in the space 79 becomes equal to atmospheric pressure, the diaphragm 91 does not expand, and the screw I/N 97 is urged upward by the spring 99. Therefore, the third valve 98 closes the third valve seat 106 but closes the fourth valve seat 106.
8 opens, the air pressure from the inboard 71 flows through the passage 11.
3 from the first outboard 102.

When energized, the magnetic force of the coil 35 causes the plunger 24 to rise against the biasing 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 (29) and transfers the air pressure from the inboard 71 to the second outboard 1.
-75. At this time, since the plunger 24 is raised, the second valve 89 is raised by the biasing force of the spring 90, and the second valve 89 closes the second valve seat 78, so that air pressure is applied to the exhaust port 80. The pressure in space 79 increases. Therefore, the diaphragm 91 expands and pushes down the piston 97 against the biasing force of the spring 99. As the piston 97 descends, the third valve 98 opens the third valve seat 106 and closes the fourth valve seat 108, so that air pressure from the first outboard 102 is guided to the first exhaust port 104. .

(Effects of the Invention) As described above in detail, the present invention has the following effects.

The solenoid valve can be made smaller while maintaining reliability in opening and closing the valve. In other words, both the 3-port and 5-port valves can be made compact with a width of 15 m, and can be optimally used for operating pen cylinders of φ4 to φ15. Electromagnetic equipment can also be made smaller, DC24V, 83
It operates at low currents of mA (30), is compatible with electronic control, and can be driven directly. In addition, 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, and 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-boat and 5-boat 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 a first embodiment of a small solenoid valve according to the present 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. 4 and 5 are diagrams for explaining the operation of the first 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 a second embodiment of the small solenoid valve according to the present invention. FIG. 7 is a side sectional view of FIG. 6. 8 and 9 are diagrams for explaining the operation of the second 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...Inboard 12
...Passage 13...First valve seat 14...
・Opening 15...Outboard 16...
Passage 17...Space 18...Second valve seat 19...Space 20...Exhaust port 21
... Passage 22 ... Opening 23 ... First valve 24 ... Plunger 25 ... 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 part 42 ... Groove part 43 ... O-ring 44 ... Core
45...0 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 section 56 ... Step section 57 ... Inclined section 58 ... Hole
59... Spring 60... Hole 61.
...Stopper pin 62...Pin 63...
・Slope part 64...Label 65...Steel ball 7
0...Valve body 71...Inboard 72.
... Passage 73 ... First valve seat 74 ...
Opening 75...Second outboard 76...
Passage 77...Space (33) 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 90...Spring 91
...Diaphragm 92...Plate 93.
...Insert 94...0 ring 95...
0 ring 96...O ring 97...Piston 98...Third valve 99...Spring 100.
... Lid body 101 ... Space 102 ... First outboard 103 ... Passage 104 ... First exhaust port) 105 ... Through hole 106 ... Third valve seat 107. ...Opening 108...Fourth valve seat
109...Opening 110...Passage 111
... Passage 112 ... Passage 113 ... Passage 114 ... Steel ball patent applicant Koganei Seisakusho Co., Ltd. Representative Patent attorney Hisashi Inoro (34)

Claims (6)

[Claims] (1) an inboard, an outboard, an exhaust port, a first valve seat having an opening communicating with the inboard, a second valve seat having an opening communicating with the exhaust port, and the first valve seat having an opening communicating with the inboard; a valve body having a first space surrounding a valve seat, a second space surrounding the second valve seat, and a passage communicating the first space and the second space with an outboard; 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 in which the first valve seat is closed and a second position in which the first valve seat is opened. an electromagnetic device having a plunger whose movement is controlled in a position, the upper end surface of the valve body and the surface having the opening of the first valve seat being disposed on the same plane; (1) 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 links the body to the first valve body; and a lower end surface of the plunger are 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 yoke that is wound around the yoke. a coil, a core airtightly inserted into the upper end of the yoke, and a case that fits with the core and the lower iron core on the lower side, and whose lower edge abuts 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 is in contact with the valve body and two or more The interlocking member is a plunger pin inserted into the through hole, 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. When the plunger is in the first position, the plunger opens the (2) second valve body in conjunction with the plunger pin, and when the plunger is in the first position, the plunger opens the second valve body. 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 are such that the second valve body closes when the second valve body is in the position. A small solenoid valve characterized in that a length of a valve body to a contact surface and a length of the plunger and the core are set. (2) The plunger is moved to the first position by a spring (
1. A small solenoid valve according to claim 1, characterized in that a =J force is applied. (3) an inboard, an outboard, an exhaust boat, a first valve seat having an opening communicating with the inboard, a second valve seat having an opening communicating with the 1Jll air port, and the second valve seat having an opening communicating with the inboard; A valve body having a first space surrounding one valve seat, a second space surrounding the second valve seat, and a passage communicating the first space and the second space to an outboard 1. a first valve body capable of opening and closing the opening of the first valve seat; a second valve body capable of opening and closing the opening of the second valve seat; the first valve body and the second valve body; a linkage (3) for interlocking the valve bodies; and the first valve body is installed at the tip i-1, and the first valve body is in a first position where the first valve seat is closed by the first valve body. an electromagnetic device comprising a plunger that is biased by a spring and is controlled to move to a second position that opens the first valve seat, the upper end surface of the valve body and the first valve seat; and the surface having the opening are 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 second valve body with the first valve body, and the first valve The body and the lower end surface of the plunger are provided on the same plane. With the turned coil. The core is airtightly inserted into the upper end of the yoke, and the case is fitted with the core and is fitted with the lower iron core on the lower side, and whose lower edge abuts against the valve body. A magnetic circuit is formed by the side core, the case, and the core, and the electromagnetic device and the valve body are coupled by the lower edge of the case (4) being in contact with the valve body. The interlocking member is a plunger pin inserted into the through hole, and the interlocking member is a plunger pin inserted into the through hole.
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 two-ring surface of the second valve body, and when the plunger is in the first position, the plunger pin The length 5 of the plunger pin is set to the length 5 of the first and second valves so that the second valve body is opened in conjunction with the second valve body, and the second valve body is closed when the plunger is in the second position. The distance between the valve seats, 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; a push pin that is movably inserted and has an inclined surface at its tip and a sliding groove that determines a movement range on a side surface, is airtightly inserted into the valve body and is biased in a projecting direction; and the stopper pin to be inserted. (5) a manual operating device comprising a push-up pin having an inclined surface that engages with the inclined surface and movable in the direction of movement of the plunger; and pushing the push-pin when the electromagnetic device is de-energized; A small electromagnetic valve characterized in that, by pushing up the plunger via the push-up pin, it is possible to perform the same operation as when the electromagnetic device is energized. (4) an inboard, an outboard, an exhaust boat, a first valve seat having an opening communicating with the inboard 1~, a second valve seat having an opening communicating with the exhaust boat, and the second valve seat having an opening communicating with the exhaust boat; a valve body having a first space surrounding one valve seat, a second space surrounding the second valve seat, and a passage communicating the first space and the second space with an outboard; , 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 a second valve body that can open and close the opening of the second valve seat; an interlocking member for interlocking a valve body; a first position in which the first valve body is provided at a tip thereof, the first valve body closes the first valve seat; and a second position in which the first valve seat is opened; and an electromagnetic device having a plunger whose movement is controlled to a position, wherein the upper end surface of the valve body and the surface having the opening of the first valve seat (6) are provided on the same plane; A through hole is provided at a position connecting the plunge portion of the valve body and the second valve body for an interlocking member that interlocks the second valve body with the first valve body; The valve body and the lower end surface of the plunger are 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 is airtightly fitted to the lower core, and a yoke that is wound around the yoke. A coil that has been turned, a core that is airtightly inserted into the 1 liter of the yoke, and a case that fits into the core and is fitted with the lower iron core on the lower side, and whose lower edge is in contact with 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 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. (7) 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 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 in the second position. A length from a contact surface of the valve body to a contact surface of the valve body is set to a length 5 of the plunger and the core, and the valve body includes a diaphragm that expands and contracts due to the pressure of a space surrounding the second valve body; a third valve having 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 an opening into which the piston is inserted and which communicates with another exhaust port. 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 a third valve body that is opened and closed by a lower end surface of the third valve body and communicates with the inboard. (8) A small solenoid valve characterized in that a fourth valve seat having an opening and another outboard 1- communicating with a third space surrounding the third and fourth valve seats are provided. (5) The plunger is moved to the first position by a spring.
5. The small solenoid valve according to claim 4, wherein the small solenoid valve is energized. (6) Inboard, outboard and 3rd edition Kibo 1
- a first valve seat having an opening communicating with the invoice I, a second valve seat having an opening communicating with the exhaust port, and a first space surrounding the first valve seat; A valve body having a passageway communicating the first space and the second space with an outboard over a second space surrounding the second valve seat, and an opening of the first valve seat that can be opened and closed. a first valve body, a second valve body capable of opening and closing an opening of the second valve seat, an interlocking member that interlocks the first valve body and the second valve body, A valve body is provided at the tip and is biased by a spring to a first position in which the first valve seat is closed by the first valve body, and is moved to a second position in which the first valve seat is opened. and an electromagnetic device having a plunger to be controlled, wherein the upper end surface of the valve body and the surface having an opening (9) of the first valve seat are 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 for interlocking the valve body with the first valve body, and the first valve body and the plunger are provided with a through hole at a position connecting the plunger and the second valve body. The lower end surfaces 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 airtightly fits into the lower iron core, and a coil wound around the yoke. , and a core hermetically inserted into the upper end of the yoke. a case that fits into the core, and a case that fits with the lower iron core on the lower side and has a lower edge abutted against the valve body, the yoke, the lower iron core. A magnetic circuit is formed by the case and the core, and the electromagnetic device and the valve body are coupled by a lower edge of the case abutting the valve body and screwing into the valve body with two or more screws. The interlocking member is a plunger pin inserted into the through hole, 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 upper end surface of the second valve body. When the plunger (10) 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 so that the valve body closes. The distance between the first and second valve seats, 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. , the valve body includes a diaphragm that expands and contracts due to pressure in a space surrounding the second valve body, and a piston that is movable in the same direction as the movement direction of the first and second valve bodies and is 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 a third valve seat which is biased by a spring in a direction to close the opening of the third valve seat and comes into contact with the piston. a fourth valve seat having an opening that is opened and closed by the lower end surface of the third valve body and communicates with the inboard; and a fourth valve seat that communicates with a third space surrounding the third and fourth valve seats. Another out port is provided, the out port is slidably inserted into the valve body, has an inclined surface at the tip, and a sliding groove on the side surface for determining a movement range, and is inserted into the valve body in an airtight manner. A manual operating device comprising a push pin biased in a protrusion direction, a stopper pin inserted into the sliding groove, and a push pin movable in the direction of movement of the plunger and having an inclined surface that engages with the inclined surface. is provided, and by pushing the push pin when the electromagnetic device is not energized, the plunger is pushed up via the push-up pin, making it possible to perform the same operation as when the electromagnetic device is energized; A small solenoid valve featuring: