JPS612982A - Solenoid valve - Google Patents

Abstract

PURPOSE:To enhance heat radiation, by using an E-shape or U-shape fixing piece so that a solenoid valve is in a flat-like shape. CONSTITUTION:A fixing piece 1 is formed in an E-like cross-sectioned shape so that a center foot 2, outside feet 3, 4 are connected together by connecting section 5, 6, the lower sections of the feet 2, 3, 4 confronting a valve chamber 7, and coils 11, 12 are fitted onto the feet 3, 4. Meanwhile a movable piece 30 is made possible to be fitted into a main body 20, and may be made comparatively thin since it is supported by a pivot 31 attached to the bottom of lower section of the foot 2. Accordingly, the solenoid valve is made in a flat shape and has a heat radiation area larger than that of the conventional one to enhance the efficiency of heat radiation.

Description

[Detailed Description of the Invention] "Industrial Application Field" This invention allows fluid to be opened and closed by electric signals,
Switch. This relates to solenoid valves.

``Prior Art'' Conventional solenoid valves range from the pilot type, which controls a large switching valve operated by fluid pressure using a small electromagnetic switching valve, which is the basis of electrical to fluid conversion, to the above-mentioned type. There are nine different miscellaneous types up to small ones that perform the basic direct electricity-to-fluid switching action, but the present invention is the basic one. This invention relates to a direct-acting solenoid valve that controls fluid directly using electricity.

Most conventional direct-acting solenoid valves have a cylindrical or square shape, which has the disadvantage of poor dissipation of heat generated by current flow and difficulty in handling.

rProblems to be Solved by the Present Invention In the present invention, the direct-acting solenoid valve is constructed in a thin planar shape to improve the heat dissipation effect against heat generation due to the flow of current, and to make it light and thin. It is easy to handle and has a simple structure as it meets the requirements of short and small sizes. To provide a solenoid valve with a new structural configuration adapted to the purpose of The objective is to obtain a solenoid valve that is inexpensive, easy to handle, and easy to manufacture; (1) A solenoid valve that is smaller than conventional ones and easy to design and manufacture.

``Means for solving the r problem'' A fixed piece of E type or U type is used to make it thin, and a movable piece that swings like a seesaw with a pivot is attached to the main body, valve hole, and valve seat. Arrays can be simple. This is an invention of a new configuration.

At the same time, as a by-product of these configurations, single-acting, double-acting, and bistable functions can be achieved by simply replacing the fixing piece, making this structural configuration extremely easy to manufacture. , it became possible to manufacture very small solenoid valves.

"action" Let's explain with an example.

"Example" FIG. 1 is a longitudinal sectional view of a preferred embodiment of the present invention.

The present invention will be explained with reference to the drawings.

In order to make the explanation easier to understand, the explanation will be made using two drawings, ``2 down'' and 9 left and right. It goes without saying that it is a good thing as long as it does not deviate from the essence.

FIG. 1 shows a fixing piece, and as shown in FIG. 2, it has an E-shaped cross section. The fixed piece 1 is usually made of soft magnetic material.

Reference numeral 2 denotes a central leg, and outer legs 3 and 4 are configured to form an E-shape by connecting portions 5 and 6 as shown on the left and right sides thereof.

The lower part of the foot 2.31" is placed as desired in the valve chamber 7 as shown, and the feet 3 and 4 are fitted with coils U and 12, respectively.
is installed.

The fixed piece 1 and the coils U and 12 are fixed with plastic or the like to form an integrated electromagnet 10 above the valve chamber, as shown in Figure 9, for easy handling. ing.

The lower part of the electromagnet 10 is provided with a main body 20, the upper part of the main body 20 forms a valve chamber 7, as shown in the figure, the valve chamber 7 is open on one side and 2 as described above. The lower parts of the legs 2, 3, and 4 are visible, and the movable piece 30 can be attached thereto.

The movable piece 30 is supported by a pivot 31 provided below the bottom of the two legs 2, and is rotated clockwise in the plane of FIG.
Alternatively, it can be pivoted counterclockwise.

The preferred mode and position of the pivot 31 is near the center of the foot 2 and near the bottom of the foot 2, but even if it is slightly off-center, the operation described in this specification can be achieved.

1. In addition, although FIG. 1 shows the movable piece 3o swinging around the tip of the knife, it is also possible to swing the movable piece 3o in a manner similar to the relationship between a shaft and a bearing in a bottle. Good too.

When the movable piece 30 rotates clockwise, the foot 3
The upper left side of the movable piece 3o touches the lower part of the leg 4, and when rotating counterclockwise, the upper right side of the movable piece 3o touches the lower part of the leg 4 and stops.

Valve seats 32 and 33 are provided at the lower part of the movable piece 30 near the left and right ends as shown.

A valve hole 34 is provided in the valve chamber 7 of the main body 20 at a desired position so that it contacts the valve seat 3 when the movable piece 30 rotates clockwise and stops when it touches the 9 feet 3. The valve hole 34 is not shown in the figure. It is arranged so that it communicates with the fluid inlet 36 provided in the main body 20 as shown in FIG.

At the position where the movable piece 30 rotates counterclockwise and stops against the bottom of the foot 4, the valve seat 33
The valve holes 35 are provided in contact with the valve holes 35 provided in the valve chamber 7 as desired, and are provided in a relationship that prevents fluid from leaking.

The valve hole 35 is configured to communicate with the fluid outlet 37 as shown.

Further, a fluid outlet 38 is provided in the two bodies 20 so as to communicate with the valve chamber 7 through a guide hole 39.

Now, in this structural configuration, when the movable piece 30 is in the position shown in the figure, if the coil 12 is energized, the magnetism will pass from the leg 4 through the connection part 6 and from the leg 2 to the pivot 3 of the movable piece 30.
A magnetic path is formed from the portion 1 to the leg 4 via the right side of the movable piece 30.

This magnetic path exerts a force on the movable piece 30 that attracts the right side of the movable piece 30 to the foot 4, and the movable piece 30 moves counterclockwise to the pivot 3.
] The movable piece 30 makes nine rotations around the center and stops when the movable piece 30 comes into contact with the leg 4.

At this time, the valve hole 35 is closed and the valve hole 36 is opened.

If pressure fluid is supplied to the fluid port 36, the fluid passes through the valve hole 36, flows into the valve chamber 7, and flows through the guide hole 39 to the fluid outlet 38.

At this time, the valve hole 35 is closed.

When the coil 12 is de-energized and the coil U is energized, the magnetism passes from the leg 3 through the connecting part 5, from the leg 2, through the pivot part 29 of the movable piece 30, through the left part of the movable piece 30, and then reaches the second leg 3. A path is formed.

The movable piece 30 receives a clockwise rotational force, rotates twice, contacts the leg 3, and stops.

In this state, the pressure fluid at the fluid inlet is closed, and the fluid outlet 37 and the fluid outlet 37 are brought into communication.

This function is the function of the 3-boat switching solenoid valve.
IS-BO125 Hydraulic pneumatic symbol
It will look like the figure.

In FIG. 1, if pressure fluid is introduced at the fluid outlet 3, if the coil 12 is energized, a flow will be formed from the fluid outlet 38 to the fluid inlet 36, and the coil 12 will be de-energized and the coil U will flow. When energized, fluid outlet 38 to fluid outlet 37
Form a flow to.

The functions in such a case are shown in FIG. 3 using JIS-BO125 hydraulic and pneumatic graphic symbols.

Now, with this kind of structure, you can understand at a glance that the device is thin.

The valve chamber 7 has a simple configuration, and valve holes 35 and 36 are desired at the bottom of the valve chamber 7.

Since the valve holes 35 and 36 are simply holes, they have the smallest area to allow the same amount of fluid to flow, and are easy to work with.Since they are just holes, even extremely thin holes can be created relatively easily.

Conventionally, the limit for small valve holes was about +0-5 mm, but with the present invention, valve holes of 0.3 to 0.1 mm can be easily machined.

The reason for this is that in such a structural configuration, the movable piece 30 is relatively thin as shown in the figure, with no scales (in the vertical direction of the figure), and therefore the valve chamber is shallow and has a width of 2 widths (as shown in the figure). This is due to the fact that the valve hole is wide (when viewed from above) and that the valve hole is just a hole.

Therefore, it can be made thin. Secondly, it becomes possible to easily manufacture a small-sized, small-flow solenoid valve.

Also, the solenoid valve according to the present invention is flat.

The area for heat dissipation is larger than that of conventional models.

Since the heat generated by the current is dissipated, a compact and highly efficient solenoid valve with large fluid passage capacity can be created.

The solenoid valve of the present invention has nine different functions.

Main body 20 and movable piece 30. There is an advantage that the structure can be changed by changing only the fixing piece 1 and the pull fixing piece 1 of the coil U without changing the shape and dimensions of the valve seats 32, 33IO.

First, in the case of FIG. 1 explained above.

For example, if the coil U is energized and the movable piece 30 is positioned in the state shown in FIG. As for whether the position shown in Figure 9 can be maintained against the pressure of the fluid from the valve hole 32, it cannot be said that it has a perfect holding force, but if the material of the fixed piece 1 is made of a permanent magnet material. Even if the coil U0 is de-energized, the foot 2. The attraction force to the movable piece 30 due to the magnetic path flowing with the connecting part 59 foot 3 is applied from the right side of the movable piece 30 to the foot 2. The attractive force exerted on the movable piece 30 by the magnetic path flowing through the connecting parts 6 and 4 is:
Since there is an air space under the movable piece 30 and the leg 4, the movable piece 30 is held in the illustrated position by magnetic force.

Even when the current is cut off after the coil 12 is energized, the movable piece 30 is held in a state where the valve seat 35 is closed and the valve seat 32 is open. This type of operation is called a bistable type.

The material of the permanent magnet is coil U or coil 12.
It is convenient that about half of the magnetism excited by the magnet remains as residual magnetism.

Further, instead of using a permanent magnet as the material of the fixed piece 1, a permanent magnet may be fitted into a part of the magnetic path at the position shown in FIG. 1/IO, and the fixed piece 1 may be made of a soft magnetic material.

Further, the same effect can be obtained by using a permanent magnet as the movable piece 30.

As another modification, as shown in FIG. 4, the coil U in FIG.
and the main body 20.

When the coil 12 is energized, the movable piece 30 operates counterclockwise, and when the coil 12 is deenergized, it returns to the position shown in FIG. 4 by the thrust of the spring 441. t) A single-acting solenoid valve can be obtained.

In FIG. 4, 401 is a fixed piece 410 is an electromagnet, 42
0 is a main body, and 430 is a movable piece, each of which is similar to the one in FIG. 1 except for the above explanation.

Furthermore, instead of the spring 441, a connecting portion 59 serving as a magnetic path3. As shown in FIG. 5, a permanent magnet 542 is attached to any of the nine legs 2 on the left side of the movable piece 30, except for leg 2, and the movable piece 30 is returned to the position shown in FIG. 5 by magnetic force. Even if you do this, a single-acting function can be obtained.

In FIG. 5, 501 is a fixed piece, 51o is an electromagnet, and 5
20 is a main body, and 530 is a movable piece, each of which is similar to the one in FIG. 1 except for the above explanation.

In FIG. 4, the spring 441 is connected to the main body 420 and the movable piece 43.
A spring 441 is inserted into each of the holes.

Although recesses 442 and 443 are provided and the shape is different from that of the main body 3° and the movable piece 30 in FIG. 1, the 6th
As shown, even if a spring 541 is inserted into the shape and dimensions of FIG. 1, the main body 420 of FIG. Movable piece 430
The main body 20 of FIG. 1 has the shape and dimensions of . Even if you change it to movable piece 3o.

The main body and movable piece of single-acting and double-acting types can be provided in the same judicial shape.

Figure 6 is also. An embodiment in which the fixed piece 601 of the electromagnet 61o is U-shaped is shown. That is, compared to FIG. 1, the left side of the fixing piece 1, that is, the connecting portion 52 and the leg 3 are omitted.

Like this, 2 pairs 602. The fixing piece 601 consisting of the connecting part 6o62 and the leg 6°4 is a 2U which has an inverted LJ shape in the figure.
The open end of the mold is located in the valve chamber 6o7. This kind of fixed piece is called [J-type].

A coil 6U is attached to the leg 602 in FIG.

It is designed to make the electromagnetic force more powerful.

The operation and function of the device shown in FIG. 6 is the same as that shown in FIG.

Also, instead of using an E-shaped fixing piece, two TI'lsu fixing pieces are used on the left and right and are plowed together into an E-shaped shape.
It may also be made to have the same effect as a mold.

The usage as shown in Fig. 1 is particularly convenient when trying to obtain a bistable function by leaving magnetic force in the fixed piece l, as shown in Fig. 1.

``Effects of the Invention'' In the embodiments, the effects of the present invention have already been mentioned in addition to the explanation of the structural configuration.9 Since the present invention uses an E-type or U-type fixing piece, it is easy to break N. The heat dissipation area is larger than that of a cylindrical or prismatic type, and the temperature rise is small compared to the heat generated by electric current. Therefore, for the same power consumption, it can be made smaller than before.

In addition, since the movable piece is structured so as to swing in a see-saw manner, the structure is extremely simple and contributes to making it thinner.

In addition, the +Wl type requires less space when several machines are used side by side, and when mounted next to two machines, it has the advantage that there is less protrusion and it is easy to make the two machines look good.

The element configuration of the switching valve, including the L, the movable piece, the valve seat, the valve hole, and the valve chamber, is extremely simple and easy to work with, and it has the advantage that it is possible to manufacture ultra-small products. be. Also.

Electromagnet I without changing the main body, movable piece, or valve seat.
There is also the advantage that nine different functions can be achieved by changing the aspect of O. Of course, in implementing the present invention, we do not necessarily claim that the main bodies and movable pieces are compatible, and depending on the situation, the two main bodies and movable pieces may be freely implemented in older forms within the scope of the claims. Needless to say.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a preferred embodiment of the double-acting type of the present invention. FIGS. 2 and 3 are graphical symbols showing the functions of those shown in FIG. 1. FIG. 4 is a longitudinal sectional view of a single-acting spring return type. FIG. 5 is a longitudinal cross-sectional view of a single-acting type permanent magnet that is used for return. FIG. 6 is a longitudinal sectional view of a variant of FIG. 4. next. l is a fixed piece + 2+ 3141 is a foot. 5.6 is the connection part. 7 is a valve chamber, and 10 is an electromagnet. U. 12 is a coil. 20 is the main body, 29 is the pivot. 30 is a movable piece. 32.33 is the valve seat, 34.35 is the valve hole. 36 is a fluid inlet. 37 is a fluid outlet. 38 is a fluid outlet. 39 is a guide hole, and 40 is a permanent magnet. 401 is a fixed piece. 4. 0 is an electromagnet. 420 is the main body. 430 is a movable piece. 441 is a spring. 442.443 is a recess. 501 is a fixed piece. 510 is an electromagnet. 520 is the main body. 530 is a movable piece. 542 is a permanent magnet. 601 is a fixed piece, and 602 and 604 are legs. 606 is a connection part. 610 is an electromagnet. 6U. 612 is a coil. 620 is a main body, 630 is a movable piece 6, and 641 is a spring.

Claims (5)

[Claims] (1) Equipped with an electromagnet having an E-shaped or U-shaped fixed piece, with the open end of the E-shaped or U-shaped looking into the valve chamber,
In the valve chamber, the center line of the center leg of the E-shaped fixed piece or
A movable piece is attached that can swing around a pivot approximately on an extension line of the center line of one leg of a U-shaped fixed piece, and the movable piece is a fixed piece of an electromagnet, or a fixed piece and a spring, or a fixed piece. It operates in a see-saw manner with a permanent magnet.
A valve seat is provided on the movable piece on the side opposite to the fixed piece, avoiding the vicinity of the center of the pivot, a valve hole is provided in a portion of the valve chamber corresponding to the valve seat, and one of the valve holes is connected to the fluid inlet. The other one of the valve holes communicates with a fluid outlet, and the valve chamber communicates with a fluid outlet. (2) The electromagnetic valve according to item 1, wherein a coil is provided on each outer leg of the E-shaped fixed piece to make it a double-acting type. (3) One of the outer legs of the E-shaped fixed piece, or U
A coil is provided on a side different from the side facing the center of the pivot of the fixed piece of the mold, and a coil is provided on a side opposite to the coil from the center of the pivot of the movable piece in a direction opposite to the direction in which the movable piece is swung by the coil. 2. The single-acting solenoid valve according to item 1, characterized in that a spring is provided so as to swing the solenoid valve. (4) A coil is installed on one leg on the outside of the E-shaped fixed piece,
2. The solenoid valve according to item 1, wherein the other leg is a permanent magnet. (5) The electromagnetic valve according to item 1 or 2, wherein the E-shaped fixed piece is a permanent magnet and is bistable.