JPH0211287U

JPH0211287U -

Info

Publication number: JPH0211287U
Application number: JP9041888U
Authority: JP
Priority date: 1988-07-06
Filing date: 1988-07-06
Publication date: 1990-01-24

Description

[Brief explanation of drawings]

第１，２図は本考案を具体化した一実施例の断
面図、第３図は変更例の要部断面図、第４図は従
来装置の断面図、第５図は別の従来装置の断面図
である。コア……２、主流体通路……６、入口部……６
ａ、主弁座……８、メインプランジヤ……９、サ
ブプランジヤ……１１、弁体……９ａ，１１ａ、
電磁吸着面……９ｂ，１１ｂ、副弁座……１２、
副流体通路……１３、連通路……１４、付勢部材
としての圧縮ばね……１５。 Figures 1 and 2 are a sectional view of an embodiment embodying the present invention, Figure 3 is a sectional view of essential parts of a modified example, Figure 4 is a sectional view of a conventional device, and Figure 5 is a sectional view of another conventional device. FIG. Core...2, Main fluid passage...6, Inlet section...6
a, Main valve seat...8, Main plunger...9, Sub plunger...11, Valve body...9a, 11a,
Electromagnetic adsorption surface...9b, 11b, sub-valve seat...12,
Sub-fluid passage...13, communication passage...14, compression spring as a biasing member...15.

Claims

[Scope of utility model registration request]

A main plunger is provided at the tip of which is integrally formed with a valve body that opens and closes the main fluid passage so as to face the main valve seat provided at the inlet of the main fluid passage so as to be able to come into contact with and separate from the main valve seat, and between the main plunger and the core. At least one sub-plunger having a valve body integrally formed at its tip is arranged in series with the main plunger so that each electromagnetic attraction surface is closer to the core in the order of arrangement, and on the side closest to the main plunger and the core. The sub-plungers other than the arranged sub-plungers have a sub-fluid passage that passes through the valve body of each plunger and can be connected to each other, and an end face on the sub-valve seat side formed on the valve body side of each plunger and one end of the sub-fluid passage. The opening area of the auxiliary fluid passage in each of the auxiliary valve seats is smaller than the opening area of the main fluid passage in the main valve seat, and the further the auxiliary fluid passage is from the main fluid passage, the further the auxiliary fluid passage is formed. The flow rate switching type solenoid valve has a small opening area, and further includes a biasing member between the sub-plunger and the core that biases the main plunger and the sub-plunger toward a closed position of the valve body.