JPH0362203U

JPH0362203U -

Info

Publication number: JPH0362203U
Application number: JP12229289U
Authority: JP
Priority date: 1989-10-20
Filing date: 1989-10-20
Publication date: 1991-06-18

Description

[Brief explanation of drawings]

第１図は本考案による増圧式分流弁の本質的な
構成を示すために本考案による第１型の増圧式分
流弁を油圧回路に組み込んだ例、第２ａ図〜第２
ｄ図は本考案による増圧式分流弁の作動状態を順
次示す図、第３ａ図は本考案による増圧弁の構成
、第３ｂ図は第３ａ図に示す増圧弁を油圧回路に
組み込んだ例、第４図は本考案による増圧式分流
弁の本質的な構成を示すために本考案による第２
型の増圧式分流弁を油圧回路に組み込んだ例、第
５ａ図〜第５ｄ図は第４図による増圧式分流弁の
作動状態を示す図、そして第６ａ〜６ｂ図は本発
明による増圧弁の構成を示す図である。図中符号、１０，３０……弁ハウジング、１１
，３１……切り換えスプール、１２，３２……増
圧ピストン、１２ａ，１２ｂ……増圧ピストン端
、１３，３３……スプリング、Ａ……出口ポート
、Ｂ……出口ポート、Ｃ……出口ポート、ＡＡ…
…アクチユエータシリンダ、ＢＢ……アクチユエ
ータシリンダ、ＣＣ……アクチユエータシリンダ
。 Figure 1 shows an example in which the first type of pressure increasing type flow diverter valve according to the present invention is incorporated into a hydraulic circuit to show the essential structure of the pressure increasing type flow dividing valve according to the present invention, and Figures 2a to 2
Figure d is a diagram sequentially showing the operating states of the pressure-increasing type diverter valve according to the present invention, Figure 3a is the configuration of the pressure-increasing valve according to the present invention, Figure 3b is an example in which the pressure-increasing valve shown in Figure 3a is incorporated into a hydraulic circuit, Figure 4 shows the second valve according to the present invention to show the essential structure of the pressure increasing type flow dividing valve according to the present invention.
5a to 5d are diagrams showing the operating state of the pressure increasing type diverter valve according to FIG. FIG. 3 is a diagram showing the configuration. Reference numerals in the figure, 10, 30...Valve housing, 11
, 31... Switching spool, 12, 32... Pressure boosting piston, 12a, 12b... Pressure boosting piston end, 13, 33... Spring, A... Outlet port, B... Outlet port, C... Outlet port ,AA...
...actuator cylinder, BB...actuator cylinder, CC...actuator cylinder.

Claims

[Claims for Utility Model Registration] 1. A pressure booster piston 12 is disposed within the valve housing 10 so as to be movable in the axial direction, and a switching spool 11 is disposed concentrically within the pressure booster piston 12 with respect to the valve piston 12. Both ends of the pressure booster piston 12 having a diameter D are closed by piston ends 12a and 12b having a diameter d, and one of these ends 12a or 12
a spring 1 for always biasing the switching spool 11 in one direction between the switching spool 11 and the end of the switching spool 11;
3 is built-in, and according to the piston diameter ratio D/d of the pressure increasing piston 12, the valve housing 10
A pressure increasing type characterized in that high pressure higher than the original pressure is alternately formed in chambers c and e formed between both ends 12a and 12b of the valve piston 12 and discharged from output ports A and B. Diversion valve. 2. The pressure increasing type flow dividing valve according to claim 1, wherein output ports A and B are integrated into one output port C. 3. A pressure booster piston 32 is disposed within the valve housing 30 so as to be movable in the axial direction, and a switching spool 31 is disposed outside the pressure booster piston 32 in parallel with the pressure booster piston 32 so as to be movable in the axial direction. The pressure increasing piston 31 is always biased in one direction by the spring 33, and the pressure increasing piston 31 is increased in the valve housing 30 according to the piston diameter ratio d ₁ /d ₂ of the pressure increasing piston 32. A pressure increasing type flow dividing valve characterized in that high pressure higher than the original pressure is alternately generated in chambers c and h formed between both ends of a pressure piston 32 and discharged from output ports A and B. 4. The pressure increasing type flow dividing valve according to claim 3, wherein output ports A and B are integrated into one output port C.