JPH0743569Y2 - solenoid valve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a solenoid valve in which opening and closing of gas is performed by magnetic force, in particular, a compound valve that opens and closes gas by driving two valve ports with one coil. Type solenoid valve.

[Prior Art] A solenoid valve in which a yoke is fixed at one end so as to be excited by a coil, and a plunger is provided so as to be opposed to the yoke so as to be opened and closed by the movement of the plunger. Are generally known from the past, for example, as shown in Japanese Utility Model Publication No. 25-25125 and Japanese Utility Model Publication No. 63-198878.

[Problems to be Solved by the Invention] Such a conventional solenoid valve opens and closes a single valve including one yoke, a plunger, and a valve seat for one coil. Therefore, in a compound type solenoid valve that opens and closes a plurality of valves individually, one valve case main body is equipped with a required number of coils corresponding to the number of valves, a corresponding number of yokes, plungers, and valve seats. Therefore, there is a problem in terms of economy because the entire apparatus becomes large and the cost becomes high, and the power consumption is large.

The present invention has been made in view of the above problems of the prior art, and an object thereof is to enable two independent valve ports to be driven by one coil. The purpose of the present invention is to provide an energy-saving solenoid valve that is compact and compact, has a simple structure, and consumes less power.

In order to achieve the above object, the solenoid valve in the present invention comprises:
The yoke 2 is fixed so that both ends of the S pole and the N pole are exposed on both left and right sides and are excited by the coil 1, and the yoke 2 is opposed to the both ends and is actuated by the energization of the coil 1.
The first and second valve ports 5.6 are arranged so as to individually open and close the second valve ports 3.4, respectively, and the first and second valve ports 5.6 are each pivotally supported at one end. Lever 7.8 that swings around pin 15.16, magnet 9.10 for the yoke mounted in the middle of lever 7.8, and lever 7.
The valve seat 11.12 to the valve opening 3.4 provided separately at the tip of 8 and the first and second valve openings 3.4.
Is arranged at a position crossing the yoke 2 in an X shape.

Also, the magnet 9.10 and the side plate 13.1 of the valve case body 30.
It is characterized in that the gap ratio between the gap a and the magnet 4 and the gap b on the magnet 9.10 and the yoke 2 side is regulated to about 1: 1.

[Operation] When a DC voltage is applied to the coil 1, N is applied to both ends of the yoke 2.
A pole and a south pole are generated. In each of the first and second valve ports 5.6,
The magnet 9.10 made of a permanent magnet is provided in the lever 7.8 in the direction of repulsion so that a repulsive force is generated at the same time as energization and the valve seats 11.12 operate in the valve opening direction.

Due to this movement in the valve opening direction, the gap a between the magnet 9 and the side plate 13 becomes smaller, and conversely the gap b between the magnet 9 and the yoke 2 becomes larger. Therefore, by setting the gap ratio a: b between a and b to an appropriate value, the valve seat 1
The force in the direction for holding 1 in the valve open state, that is, the current value for holding the valve open can be reduced, resulting in power saving. a b
Is preferably about 1: 1. The same applies to the second valve port 6 side.

Next, when the power supply to the coil 1 is cut off, the magnetic poles (NS) generated at both ends of the yoke 2 disappear, so that the magnet 9.10 operates in the direction of attracting to the yoke 2 and the valve seat 1
1.12 closes each valve opening 3.4.

Gas flows from the first and second gas inlets (not shown) to the gas chamber 2
0.21 is entered, and from this, each valve opening 3.4 goes through the passage 22.23 toward the first and second gas outlets 24.25.

[Embodiment] The coil 1 is provided with a concave housing portion 31 in a part of the valve case body 30, and the bobbin case 32 is incorporated therein.

A hole 1a penetrating to the left and right is provided in the center of the coil 1, and a yoke 2 is fitted and fixed in the hole 1a immovably. Both ends of the yoke 2 are exposed from both the left and right sides of the hole 1a, and the magnet 9.10 is opposed to each end face thereof.

The lever 7.8 has its base end mounted so as to make an arc motion about a pivot pin 15.16 as a fulcrum, and the valve seat 1 is attached to each tip (free end) thereof.
1.12 is provided.

The magnet 9.10 is a permanent magnet. The magnet 9.10 is integrally attached to the lever 7.8 so that the repulsion and attraction of the magnet are applied between the magnet 9.10 and the yoke 2. For example, when the coil 1 is not energized, the yoke 2 is not excited. At this time, an attractive force is applied between the coil 9 and the magnet 9.10. Do like this. And this repulsive force is used to open the valve seat 11.12.

The lever 7.8 has a valve spring 17.1 between the lever and the side plate 13.14.
It is used to keep the valve closed by urging 8, but this valve spring may not be provided.

The two gas inlets corresponding to the first and second valve ports 5.6, the gas passages 22.23, and the gas outlets 24.25 are provided parallel to the valve case body 30, respectively.

The valve seats 3a and 4a of the first and second valve openings 3.4 are provided at positions where they cross in the X shape with the yoke 2 at the center of the coil 1 as the center. With this configuration, the valve seats have different phases on the plane, so that the left and right thicknesses of the valve case body 30 can be reduced, and the overall capacity can be reduced.

[Advantages of the Invention] As described above, the present invention is a composite solenoid valve for opening and closing a gas, which uses two ends of a yoke to drive two independent valve ports with one coil. 5.6 each has a lever 7.8 which swings about a pivot pin 15.16 at one end as a fulcrum, a magnet 9.10 for a yoke attached at an intermediate position of the lever 7.8, and the valve opening provided at the tip of the lever 7.8 at a distance from each other. In addition to the valve seat 11.12 for 3.4, the first and second valve openings 3.4 are arranged at the positions crossing the yoke 2 in the X shape, so that even a small movement of the magnet 9.10 can be achieved. The lever 7.8 allows the valve seat to be greatly expanded and transmitted to the valve seat 11.12 to securely open and close the valve opening, and the positions of the first and second valve openings are different on the plane, and the valve case Miniaturized by reducing the left and right thickness of the main body It is possible to achieve.

Further, the gap a between the magnet 9.10 and the side plate 13.14 of the valve case body 30 and the gap ratio a: b between the magnet 9.10 and the gap b on the yoke 2 side can be set to an appropriate value, and thereby the valve seat A small and power-saving solenoid valve can be obtained by reducing the current value that holds the valve open.

In addition, the structure is simple, the implementation is easy, the cost is advantageous, the economy is high, and the practicability is excellent.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of a solenoid valve according to the present invention, FIG. 2 is a side view seen from a side of a first valve port with a side plate removed, and FIG. 3 is a sectional view taken along line AA in FIG. . 1 …… Coil 2 …… Yoke 3.4 …… Valve 5.6 …… First and second valve port 7.8 …… Lever, 9.10 …… Magnet 11.12 …… Valve seat, 13.14 …… Side plate

Claims (2)

[Scope of utility model registration request] 1. A yoke 2 having both ends of an S pole and an N pole exposed on both left and right sides and fixed so as to be excited by a coil 1, and a yoke 2 opposed to the both ends and driven by energization of the coil 1. The first and second valve ports 5.6 are arranged so as to individually open and close the first and second valve ports 3.4, respectively, and the first and second valve ports 5.6 are respectively A lever 7.8 that swings about a pivot pin 15.16 at one end as a fulcrum and this lever 7.8
Magnet for the yoke mounted in the middle position of 9.
10 and a valve seat 11.12 to the valve opening 3.4 provided at a distance from the tip of the lever 7.8, and the first and second valve openings 3.4 are crossed in an X shape around the yoke 2. A solenoid valve characterized by being placed in a position. 2. The gap ratio between the magnet 9.10 and the side plate 13.14 of the valve case main body 30 and the gap ratio between the magnet 9.10 and the gap b on the yoke 2 side are defined to be about 1: 1. The solenoid valve described.