JPS5939370U

JPS5939370U - Leak prevention mechanism of directional valve

Info

Publication number: JPS5939370U
Application number: JP13470482U
Authority: JP
Inventors: 野口　英輔; 井上　昌昭
Original assignee: 株式会社ナブコ
Priority date: 1982-09-03
Filing date: 1982-09-03
Publication date: 1984-03-13
Also published as: JPS622365Y2

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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図イは、従来の口弁式方向切換弁の断面図。第１図口は、第１図イの二−二′断面図。第２図は、第
１図イの口弁と回弁座の溝と開口部の接続関係を示す図
。第３図は、本考案の一実施例の回弁式方向切換弁の断
面図。第４図イ９口、ハは、第３図の回弁と回弁座の溝
と開口部及び第１、第２細溝の接続関係を示す図。１・・・回弁座、２・・・回弁、３・・・弁体、５・・
・供給ポート、６−・・・排出ポート、７Ｓ、７Ｍ・・
・負荷ポニト、３ａ、　　３ｂ・・・摺動面、１０・・
・溝、」４・・・第１細溝、１７・・・第２細溝。FIG. 1A is a sectional view of a conventional mouth valve type directional control valve. The opening in Figure 1 is a 2-2' sectional view of Figure 1A. FIG. 2 is a diagram showing the connection relationship between the mouth valve and the groove of the valve seat and the opening in FIG. 1A. FIG. 3 is a sectional view of a reversible directional valve according to an embodiment of the present invention. 4A and 4B are diagrams showing the connection relationship between the groove and opening of the rotation valve and rotation valve seat in FIG. 3, and the first and second thin grooves. 1... valve seat, 2... valve, 3... valve body, 5...
・Supply port, 6-...Discharge port, 7S, 7M...
・Load point, 3a, 3b...Sliding surface, 10...
・Groove, ``4...first narrow groove, 17...second narrow groove.

Claims

[Scope of utility model registration request]

A rotating valve seat is provided with a supply port, two load ports, and an exhaust port, and the openings of these ports are provided on the sliding surface, and the rotating valve seat is slidably abutted on the sliding surface of the rotating valve seat. In the mouth valve type directional control valve equipped with a turning valve which has a groove for switching the connection of each port and is operated by a handle, the groove and the opening are provided in either or both of the turning valve seat and the turning valve. The circulation valve is provided with a first narrow groove that connects to the surrounding atmosphere or an exhaust port, and a second narrow groove that connects and connects to the atmosphere surrounding the opening of the supply port when the load port is connected by the groove. Leak prevention device for reversible directional valves.