JPS6152475A - Solenoid valve - Google Patents

Abstract

PURPOSE:To reduce the coil width by laminating plural printed members where coil conductor is formed in spiral or in oblique parallel on the surface of thin insulated substrate as a coil for electromagnet. CONSTITUTION:A spiral coil conductor 12 is formed on the surface of thin square insulated substrate having a central hole 11a to constitute a printedboard 10. Plural sheets of printedboards 10 are arranged in parallel while matching the holes 11a and the outside face then the inside end 12a and the outside end 12b of the coil conductor 12 are bonded to form a coil 13. The coil 31 may be formed by bending a linear conductor inclining on the surface of the insulated substrate tubularly.

Description

[Detailed description of the invention] Industrial applications The present invention relates to improvements in solenoid valves.

BACKGROUND OF THE INVENTION Conventionally, solenoid valves have been constructed by movably inserting an iron core made of a ferromagnetic material into the center of a normal cylindrical coil made of spirally wound enamelled copper wire.

Problems to be solved by the invention Using the above coil! In order to increase the obtained inductance, the entire coil becomes larger, and therefore,
Solenoid valves using this electromagnet also had to be large in size.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and provide a solenoid valve having an electromagnet using a printed coil that is further miniaturized by making the printed board or printed cylinder smaller and lighter.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention has a structure in which coil conductors 12. ．． The coil/V conductor 12.2 of each printed board 10 or printed cylinder 20 is formed by superimposing a plurality of printed materials 22 in a parallel or concentric cylindrical shape.
2 are connected in series to form a coil 31, and an electromagnet 30, in which an iron core 33 made of a ferromagnetic material is slidably fitted into a hole in the center, is combined concentrically with a valve 40 to form an integral unit. .

EXAMPLE The present invention will be described below based on an example shown in the drawings.

FIG. 1 is a perspective view of the printed board 10, and FIG. 2 is a longitudinal cross-sectional view of an electromagnet 30 using the printed board 10 assembled into a directional control valve 40. In Figure 1, a hole 11 is shown in the center.
A coil conductor 12 in the shape of a spiral ρ is formed on the surface of a rectangular thin electrically insulating substrate 11 having a diameter of . This coil conductor 12 can be made, for example, by pasting a copper foil on the surface of the insulating substrate 11, drawing a spiral A/line pattern on the copper foil, and painting the pattern by applying a corrosive liquid to the surface of the copper foil. It is made using a manufacturing method such as photo-etching, in which the line portions are left to corrode and the remaining image portions are protected from further corrosion. As shown in the second figure, a plurality of printed boards 10 (13 boards in this embodiment) are arranged in parallel with the holes 11a and their outer surfaces aligned, and the ends of the coil conductors 12 of these printed boards are appropriately spaced. Connect using means. That is, by connecting the inner end 12a and the outer end 12b of the coil conductor 12 between adjacent printed boards, a long coil conductor continues in series, and the coil 31
is formed. This carp, /L/31 center hole 11a
An iron core 38 made of a ferromagnetic material can be inserted therethrough.

In the second factor, the electromagnet 30 has an iron core 33 guided inside a yoke 32, and a coil 31 is attached to surround the iron core. The coil 31 can be attached or detached by removing a cap 82a screwed onto the yoke 82. The other coaxial side of the iron core 38 serves as a spool 43 of a valve 40 .

In the embodiment, the valve 40 is a 20,000 valve having a valve hole 42 in which a spool 43 can slide, provided inside a valve casing 41 integrally formed with the yoke 32, and having three connection ports 45, 46, and 47. show.

A spring 44 is provided on the side of the spool 43 opposite to the hem magnet to press the spool toward the electromagnet. Reference attachment 48 is a drain port.

When the coil 31 of the electromagnet 80 is not energized, the subwoofer 1'4B stands still on one side (right side in the figure) as shown in the second diagram, and the first way connecting the two connection ports 45 and 46 is opened. , when a DC current is passed through the coil ll, the electromagnet 3o
is activated to move the iron core 33 and sprue/L/43 to the spring 44.
is moved to the other side (to the left in FIG. 2) against the elastic force of , the first way is closed, and the second way through which the two connection ports 45J47 communicate is opened.

3 to 5 show another embodiment of the coil, the coil/l' 31 consisting of a polymer of the printed cylinder 20. FIG. That is, a flat print 20a is made by forming a plurality of linear conductors 22 in parallel on the surface of a thin rectangular insulating substrate 21 at equal intervals along the width direction and inclined with respect to the longitudinal end 121a. , an insulating substrate 2 is formed by bending the flat printed board into a cylindrical shape along the length direction and forming upper and lower edges 21a and 21b.
1, a plurality of coils with different diameters are made, and these are concentrically fitted with a slight gap to form a set, and the ends of the linear conductors 22 of each coil cylinder 20 are connected in series to form a coil 31. was formed. The method of making the linear conductor 220 is the same as in the previous embodiment.

In the electromagnet aO according to the present invention, a coil having a long coil conductor can be obtained using a small-width solenoid.

In addition to the embodiments described above, the coil conductors of a plurality of printed boards superimposed in parallel may be connected in parallel, and the connection is as follows. That is, with reference to FIGS. 6 and 7, copper foil is placed on printed boards 10p and 10q by the photo-etching technique described above to form coil conductors 12p and 12q, and one end portion 12ap of them is formed. ,
12aq is a so-called through hole, and hole 14
Cylindrical conductors 15p and 1 made of copper foil etc. are connected to p and 14q.
5q is formed. A linear conductor 16 is inserted into the cylindrical conductors 15p, 15q, and these cylindrical conductors 15p, 1
5q and the linear conductor 16 are connected by solder 18.

The other ends 12bp and 12bq are similarly connected by other linear conductors IT.

The iron core 38 may be extended to the other side of the spool 48 in FIG. 2, and the laminar stones 80 may be provided on both sides of the valve portion. This allows for faster and more powerful valve operation.

The type of valve is not limited to the directional valve shown in the embodiment, but can be applied to any solenoid valve. and,
With this pulp, all fluids such as gas, liquid, and powder can be controlled.

Effects of the Invention As described above, the present invention uses a plurality of printed materials in which coil conductors are formed in a spifle shape or a parallel diagonal shape on the surface of a thin insulating substrate as a blood coil for an electromagnet, and polymerizes them in parallel or in a cylindrical shape. Since the coil conductors on printed boards or printed cylinders are connected in series, the width of the coil can be made much smaller than before, and solenoid valves using this are smaller and lighter and more compact, which reduces manufacturing costs. is now also possible.

[Brief explanation of drawings]

Fig. 1 is a perspective view of essential parts showing a one-shot embodiment of the present invention. Fig. 2 is a vertical cross-sectional view of the present invention. Fig. 8 is a perspective view of a flat printed board according to another embodiment. Fig. 4 is a printed cylinder. 5 is a side view of another embodiment, FIG. 6 is a printed board 10p,
A perspective view showing 10q, and FIG. 7 shows end portions 12ap and 12aq.
It is a sectional view of the vicinity. 10, Lop, 10q-printed board, 11°217 insulating board, 12, 22... Coil conductor, 80...
Electromagnet, 31-・Carp p133... Iron core, 40-・
Valve, 41-・Valve casing, 48... Suzu ρ Dai, Patent attorney Ti Keiichi, Inukai Shinpei, Ishima Mibuya

Claims (4)

[Claims] (1) In a solenoid valve in which the electromagnet 30 and the spool valve 43 are coaxially assembled and integrated, and the valve is opened and closed by the operation of the electromagnet, the electromagnet 30 is attached to the surface of the thin insulating substrates 11 and 21 in a spiral manner. A plurality of printed materials each having coil conductors 12 and 22 formed in a shape or a parallel diagonal shape are superimposed in a parallel shape or in a concentric cylindrical shape, and the coil conductors 12 and 22 of each of these printed boards 10 or printed cylinders 20 are
are connected in series or in parallel to form a coil 31, and an iron core 33 made of a ferromagnetic material is slidably fitted into a hole in the center of the coil 31. (2) The solenoid valve according to claim 1, wherein the printed board 10 is pre-drilled with a circular hole 11a in the center. (3) The printed cylinder 20 is formed by forming a plurality of linear conductors 22 at equal intervals and slanting on the surface of a rectangular insulating substrate 21, bending the substrate 21 into a cylindrical shape, and connecting one end of the adjacent linear conductors 22. 2. The solenoid valve according to claim 1, which is connected to the other end to form a single coil. (4) The solenoid valve according to claim 1 or 3, wherein the coil 31 is formed by concentrically combining a plurality of printed cylinders having different diameters.