JPS6215667U

JPS6215667U -

Info

Publication number: JPS6215667U
Application number: JP10664885U
Authority: JP
Priority date: 1985-07-12
Filing date: 1985-07-12
Publication date: 1987-01-30
Also published as: JPH038851Y2

Description

[Brief explanation of the drawing]

第１図は本考案による比例制御弁の実施例を示
す断面図、第２図は同比例制御弁の制御動作状態
を示す断面図、第３図は比例制御弁における印加
電流と二次側圧力との関係を示す特性図、第４図
と第５図は従来の比例制御弁を使用した配管図で
ある。図において、１は比例ソレノイド、４は本体、
５ａ，５ｂはＰポート、６はＡポート、７はＲ１
排気ポート、８ａ，８ｂはフイードバツクポート
、９は第１スプール、１０ａ，１０ｂは圧力反室
、１１は補助バネ、１２は第２スプール、１３は
Ｒ２排気ポート、１４はＢポート、１５は切換え
圧設定バネ、２０は第１シリンダー室、２１は第
２シリンダー室をそれぞれ示す。 Figure 1 is a sectional view showing an embodiment of the proportional control valve according to the present invention, Figure 2 is a sectional view showing the control operation state of the proportional control valve, and Figure 3 is the applied current and secondary pressure in the proportional control valve. 4 and 5 are piping diagrams using a conventional proportional control valve. In the figure, 1 is a proportional solenoid, 4 is a main body,
5a, 5b are P ports, 6 is A port, 7 is R1
Exhaust ports, 8a and 8b are feedback ports, 9 is a first spool, 10a and 10b are pressure counter chambers, 11 is an auxiliary spring, 12 is a second spool, 13 is an R2 exhaust port, 14 is a B port, 15 is In the switching pressure setting spring, 20 indicates a first cylinder chamber, and 21 indicates a second cylinder chamber.

Claims

[Claims for Utility Model Registration] In one valve device, two cylinder chambers are formed in the main body, and a first cylinder chamber is formed in one of the cylinder chambers.
a second spool in the other cylinder chamber, each spool having three large-diameter sliding parts and a small-diameter communication part therebetween; , one end of the first spool is connected to a proportional solenoid, and the other end is a first pressure chamber facing the other end of the first spool, communicating with the inside of the first cylinder chamber, and having a large diameter in the middle; An A port that is opened and closed by a sliding part, a P port and an R1 discharge port that are arranged on both sides of the A port and connected to a pressure source, and a first
Feedback ports communicating with the pressure counterchambers of the cylinder chambers are formed respectively, and the partition wall between both cylinder chambers is penetrated by a supply port provided at a position corresponding to the P port. The second cylinder chamber is formed with a pressure counter chamber that communicates with the pressure counter chamber of the first cylinder chamber via a feedback port, and is always connected to a small diameter communicating portion on the pressure counter chamber side of the second spool. It has an R2 discharge port that communicates with it, and a B port that communicates with the P port through the other small diameter communication part and is opened and closed by the large diameter sliding part in the middle. What is the pressure counterchamber of the second cylinder chamber? A proportional control valve characterized in that, in the opposite chamber, a switching pressure setting spring is interposed between an externally adjustable spring receiver and the second spool.