JPS59121275A - Fluid valve - Google Patents

Abstract

PURPOSE:To permit to control the flow amount of the fluid within the range from a big amount of a trace amount by a method wherein a micro-adjusting driving source, driving a cam engaged with the end face of the tapered valve rod part of an armature, is provided in the valve. CONSTITUTION:The fluid valve 10 can flow the big amount of the fluid from a fluid entrance 12 to a fluid outlet port 14 by exciting a solenoid coil 18 and attracting the armature core 20 downwardly against a spring 26. In case the trace amount of the fluid is desired to be flowed through the fluid valve 10, the micro-adjusting driving source 32 is driven, the reduced diametral part 30a of the cam 30 is engaged with a roller 28 and the tapered valve rod part 24 is separated from the tapered valve seat 22 with a predetermined gap in accordance with the dimension of the diameter of the reduced diametral part.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fluid valve, and more particularly to a fluid valve that is capable of allowing a large amount of fluid to flow as well as a very small amount of fluid to flow, thereby making it possible to vary the flow rate. .

When engaging the clutch, it is desirable to first move the movable plate quickly to just before the engaged state and then slowly move it to the fully engaged state to ensure smooth power transmission.

In the prior art, in order to meet such requirements, several fluid valves with different flow rates were combined, resulting in a complex, large, and unsatisfactory structure.

The purpose of this invention is to provide a fluid pulp capable of large volume fluid flow and variable flow traces.

If we look at the drawings and compare the four examples of Fukuhime no Mi'1fc, we get the following:
1 and 2 show a fluid valve 10 according to the present invention, and this door pulp 10 includes a pulp case 16 having a 6R body hole 12 and a cylindrical fluid outlet 4; A tb coil 18 is housed and attached within the wall and is slidably provided within the pulp case 6. It consists of an armature and an armature.

The pulp case 16 has a tapered valve seat 22 which is provided near the fluid outlet and becomes smaller in diameter toward the fluid outlet, and the armature has a tapered valve stem portion 24 corresponding to the valve seat 22. The armature 20 is normally biased by a spring 26 so that the valve stem portion 24 comes into close contact with the valve seat 22. Therefore, this lAt body pulp 10 is converted into a 6f body from the υW body population 12 by attracting the armature 20 downward in FIG. A large amount of myr% can be added to the fluid outlet 14.

The uninvented fluid valve 10 is a roller mounted on the end face of the valve stem row of the armature 20. cam 3 that engages with 8
0 and a fine t and .omega. strain section driving source 32 for driving the cam. The fine adjustment drive shaft 32 ('i, 1ri in the illustrated embodiment, fluid outlet) consists of a step motor attached to the cylinder of 4, the shaft of which passes through the cylinder wall airtightly and rotatably to drive the cam blade. The cam 30 supports
As shown in Figure 3, a part of the outer periphery has a reduced diameter portion 30a whose diameter gradually decreases.

Next, to explain the operation of the above fluid pulp, fluid pulp 1
When it is desired to cause a small amount of fluid (for example, air) to flow through the cam 30, the small amount adjustment drive source 32 is driven to
a is engaged with the roller 4, and the tapered valve rod portion 24 is separated from the tapered valve seat n by a predetermined gap in accordance with the diameter of the reduced diameter portion 30a. Therefore, the fluid is set? A small amount of the fluid flows from the fluid inlet to the fluid outlet 14.

- When it is desired to circulate a large amount of force and C body, the electromagnetic coil 18 is excited and the armature 20 is attracted in the direction of arrow a. In this way, the valve stem part row is completely reversed from Ps from valve n≦22, and a large amount of ffat body is transferred from the fluid inlet to the door outlet 1.
It is distributed to 4.

In addition, in FIG. 1, the reference numeral 34 indicates the upper 9
This is a rubber seal that is attached to the 114th surface and engages with the base 36 of the pulp case 16 when the fluid pulp 10 is completely closed.

According to the present invention, as described above, since the flow rate of fluid can be adjusted from a large amount to a minute amount with a single fluid valve, the present invention has the benefit of being small and inexpensive.

[Brief explanation of the drawing]

FIG. 1 and FIG. 2 are related to non-invention. A longitudinal cross-sectional view of the body pulp and a cross-sectional view taken along the line A-A' in FIG. 1. FIG. 10-----One-piece fluid valve, 12-----9f body included [
'', 14, ---- Monomer outlet, 1 (i ---- Pulp case, 18 ------- ' Coil, 20-
--- Armature, 22 --- Theba-like constellation, 2
4---Tapered valve rod part, 26---Spring,
:qo----1 come, 3゛no----11 lessons. Patent Yamadori 1 person Nikoma Automatic R = Kogyo Co., Ltd. sl dying

Claims (1)

[Claims] a pulp case having a fluid intake and a fluid outlet; an electromagnetic coil attached to the pulp case; and a valve rod slidably provided within the pulp case and engaged with a valve seat provided near the fluid outlet. and an armature that is normally spring-biased so that the valve stem portion comes into close contact with the valve seat, the valve seat and the valve stem portion of the armature becoming smaller in diameter toward the fluid outlet. The fluid valve further comprises a tapered cam that engages with an end face of the tapered valve rod portion of the armature, and a fine adjustment drive source that drives the cam.