JPS6432974U

JPS6432974U -

Info

Publication number: JPS6432974U
Application number: JP12910087U
Authority: JP
Priority date: 1987-08-25
Filing date: 1987-08-25
Publication date: 1989-03-01
Also published as: JPH049487Y2

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例の要部縦断正面図
、第２図Ａ〜Ｃは同上作動の説明図、第３図は本
考案の第２実施例の要部縦断正面図、第４図は本
考案の実施例によつて流体圧シリンダを駆動する
場合の構成図、第５図Ａ〜Ｃは流体圧シリンダの
ヘツド室とロツド室における流体圧及びピストン
のストロークと、時間との関係を示す線図、第６
図及び第７図は従来の５ポート弁と減圧弁との接
続を示す概略構成図である。１１，４１……弁部、１２，４２……パイロツ
ト弁、１５，４５……弁本体、１７，４７……ス
プール、２１，４９……フイードバツク室、２７
……復帰ばね、２８……フイードバツク通路、Ｐ
……供給ポート、Ａ，Ｂ……出力ポート、ＥＡ，
ＥＢ……排出ポート。 Fig. 1 is a longitudinal sectional front view of the main part of the first embodiment of the present invention, Fig. 2 A to C are explanatory diagrams of the same operation, Fig. 3 is a longitudinal sectional front view of the main part of the second embodiment of the invention Figure 4 is a configuration diagram when a fluid pressure cylinder is driven according to an embodiment of the present invention, and Figures 5A to 5C are diagrams showing the relationship between fluid pressure in the head chamber and rod chamber of the fluid pressure cylinder, the stroke of the piston, and time. Diagram showing the relationship, No. 6
7 and 7 are schematic configuration diagrams showing the connection between a conventional 5-port valve and a pressure reducing valve. 11,41...Valve section, 12,42...Pilot valve, 15,45...Valve body, 17,47...Spool, 21,49...Feedback chamber, 27
...Return spring, 28...Feedback passage, P
...Supply port, A, B...Output port, EA,
EB...Exhaust port.

Claims

[Claims for Utility Model Registration] Supply port, first and second output ports, and first
, a valve member is provided in the valve body having the second discharge port, which switches the flow path between one of the supply port and the output port and between the other output port and the discharge port by displacement in both directions from the neutral position. a valve portion; a driving portion that applies a driving force to one end of the valve member;
A 5-port valve equipped with a return spring that applies a return force to the other end of the valve member, wherein the valve section includes a feedback chamber that applies feedback fluid pressure to the valve member in the same direction as the driving force; A 5-port 2-pressure valve characterized in that it is provided with a feedback passage that communicates a chamber with a second output port.