JPS5849065U

JPS5849065U - directional valve

Info

Publication number: JPS5849065U
Application number: JP14549681U
Authority: JP
Inventors: 小岩井　秀志
Original assignee: カヤバ工業株式会社
Priority date: 1981-09-30
Filing date: 1981-09-30
Publication date: 1983-04-02
Also published as: JPS6136845Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

図面はこの考案の１実施例を示すもので、第１図はスプ
ールを中立状態に維持した断面図、第２図はスプールを
左側に移動させた状態の一面図である。Ａ、　Ｂ・・・アクチェータポート、１・・・ボディ、
２・・・スプール、４・・・ポンプ通路、７・・・タン
ク通路、Ｐ・・・ポンプ、８．９・・・ロードチェック
弁、１０゜１１・・・流通路、１２．１３・・・通油孔
、１４．１５・・・環状溝、１７・・・タンク。The drawings show one embodiment of this invention; FIG. 1 is a sectional view with the spool maintained in a neutral state, and FIG. 2 is a front view with the spool moved to the left. A, B...actuator port, 1...body,
2...Spool, 4...Pump passage, 7...Tank passage, P...Pump, 8.9...Load check valve, 10°11...Flow passage, 12.13... - Oil hole, 14.15... annular groove, 17... tank.

Claims

[Scope of utility model registration request]

A body formed with a pump passage communicating with a pair of actuator ports and a tank passage communicating with a tank, a spool built into this body, and a spool formed in this spool, and a A flow passage that communicates with either the pump passage or the actuator port, a load check valve that opens when the pressure oil in this flow passage is drawn, and this check valve that opens (by communicating with the flow passage and of the spool). A directional control valve having an oil passage that communicates with either the tank passage or the actuator port depending on the switching position of the spool, wherein the actuator port and the tank passage communicate with each other depending on the switching position of the spool. a directional control valve in which an annular groove is formed in the spool and maintains a relative position in which communication between the actuator port and the pump passage is interrupted on the other side;