JPH0212366Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a valve device that utilizes electromagnetic force.

Valve devices that use electromagnetic force are generally operated by amateurs when the electromagnetic coil is activated.
A valve body integrated with the armature opens and closes an orifice in the valve casing that communicates the first and second passages through which fluid flows, but the coil must be energized to keep the orifice open. Yes, it is uneconomical.

The present invention was devised in view of the above points, and according to the present invention, a valve body is operated by an electromagnetic coil and has a valve body at one end that opens and closes an orifice in a valve case that communicates the first passage and the second passage. A cylindrical fixed guide is fitted to the other end of the fixed cylindrical part of the armature, and when an electromagnet is first excited in this fixed guide, the protrusion that protrudes inward of the cylindrical part on the upper part of the armature becomes the first inner periphery. A recess is provided that moves along a second inner circumference that is continuous with the first inner circumference when the electromagnetic coil is demagnetized. L catches the protrusion of an amateur who moved along.
It is economical because it has a simple structure and can keep the orifice open even when the electromagnetic coil is demagnetized.

Next, an embodiment of the solenoid valve of the present invention will be described with reference to the drawings.

1 is an electromagnetic coil, and a valve case 2 is fixed below this electromagnetic coil. This valve case has a first passage 3 and a second passage 4, which are communicated through an orifice 5 in the valve case. 6 indicates the valve chamber.
Reference numeral 7 denotes an armature that is operated (moves up and down in the figure) by the operation of the electromagnetic coil 1. The upper part of this armature is provided with a cylindrical part made of a non-magnetic material, while the lower end of this armature has a valve body 8 made of a magnetic material. It is fixed by appropriate means and constitutes an amateur assembly as a whole.

A guide 10 made of a cylindrical magnetic material is fixed to the lower end of the seal fitting 9, and this portion is also joined to function as a fixed core, and the lower part of this guide is connected to the upper part of the armature 7. That is, it fits into a cylindrical portion made of non-magnetic material.

A recess 11 as shown in FIG. 2 is formed on one side of the guide 10. That is, when the corners of this recess 11 are indicated by a, b, c, d, e, and f, the line connecting a and f at the bottom is parallel to the bc line and the de line, and each line is parallel to the guide 10. It is inclined upward to the right in a predetermined angle view with respect to the center line XX. Further, the ab line, cd line, and ef line are parallel to each other and also to the X-X line.

An L-shaped protrusion 12 projects from approximately the center of the recess 11. However, the extension of the CD line is on one ridge line 13 of this protrusion, and the other ridge line 14 is parallel to the AB line, CD line, and EF line, and the imaginary line from its tip is the DE line. They are starting to intersect.
15 indicates the intersection of the ridge lines 13 and 14.

The recess 11 is located on the back side of the cylindrical portion of the armature 7.
A protrusion 16 is formed in a portion facing the recesses ab, bd,
It moves along the cd, de, ef, and fa lines, but does not move outside of each line.

However, as shown in FIG. 1, when the valve body 8 closes the orifice 5, the protrusion 16 is present at the corner a of the recess 11.

Next, the operation of the solenoid valve of the present invention will be explained. Now, when the electromagnetic coil 1 is energized, the armature 7 rises in the figure, the valve body 8 opens the orifice 5, and the fluid flows from the first passage 3 through the orifice 5 to the second passage 4. At this time, the protrusion 16 of the armature 7 extends from the corner a to the corner c via the corner b. At this time, when the electromagnetic coil 1 is deenergized, the amateur 7 becomes the first
As shown in the figure, the protrusion 16 falls from the corner c along the CD line, hits one ridge line 13 of the L-shaped protrusion 12, and engages with the intersection 15 with the other ridge line, and then Since the armature 7 does not move, the valve body 8 is stopped at the position where the orifice 5 is opened.

Therefore, it is extremely economical because it is not necessary to excite the electromagnetic coil 1 when the orifice of the valve body is opened, unlike the conventional method.

When the electromagnetic coil is excited again, the armature 7 rises again, but the protrusion 16 rises from the intersection 15 to the de line, and from there it moves toward the corner e. Therefore, the armature 7 rotates slightly and rises. When the electromagnetic coil 1 is de-energized, the protrusion returns from the corner e to the corner f and back to the corner a.

At this time, the af line, bc line, and de line are
-Since it is tilted as shown in the figure with respect to the X-ray,
The protrusion 16 of the armature 7 is activated by the operation of the electromagnetic coil.
can move smoothly along the ab, bc, cd, ef, and fa lines.

As described above, the present invention has a simple structure in which the armature is actuated by the operation of the electromagnetic coil, and the orifice can be opened and closed by the valve body, and the orifice can be opened even when the electromagnetic coil is deenergized, so it is economical. This type of solenoid valve can be provided.

[Brief explanation of the drawing]

FIG. 1 is a schematic vertical sectional view of the solenoid valve of the present invention, FIG. 2 is a perspective view of the guide, and FIG. 3 is a vertical sectional view showing the valve assembly. 1... Electromagnetic coil, 3... First passage, 4...
Second passage, 5... Orifice, 7... Armature, 8... Valve body, 10... Fixed guide, 11... Recess, 12... Projection, 16... Projection.

Claims (1)

[Scope of utility model registration request] An armature having a cylindrical portion is operated by the operation of an electromagnetic coil, and a valve body configured at one end of the armature is opened and closed with respect to an orifice that communicates a first passage and a second passage through which fluid passes. A cylindrical fixed guide is fitted into the other end of the armature, and corners a, b, c, d, e, and f are formed on a part of the circumferential surface of the guide. and a recess in which the af, bc, and de lines connecting each corner are inclined at a predetermined angle with respect to the guide axis, and the ab, cd, and ef lines are parallel to the guide axis and at a higher position than the bc line, The imaginary extension line of the CD line in this recess intersects one ridge line, and the other ridge line is parallel to the axis of the guide, and the imaginary extension line intersects the DE line. a self-retaining solenoid valve, the cylindrical armature member having an inwardly directed protrusion movable along the periphery of the recess during actuation.