JPH045567U

JPH045567U -

Info

Publication number: JPH045567U
Application number: JP4677990U
Authority: JP
Priority date: 1990-05-01
Filing date: 1990-05-01
Publication date: 1992-01-20

Description

[Brief explanation of the drawing]

第１図はこの考案に係る切換弁の一実施例を示
すもので、同図ａは縦断面図、同図ｂは同図ａの
ｂ−ｂ線断面図、同図ｃは同図ａのｃ−ｃ線断面
図、第２図はこの考案の要部を抽出して示す斜視
図、第３図は従来の切換弁の一例を示す断面図で
ある。３……切換スプール弁、５……導出口、６，７
……通口、２０……摺動弁体、２９……サクシヨ
ン導管、４０……内筒体、４１……外筒体、４２
，４３……溝、４４……パイロツト弁。 Figure 1 shows an embodiment of the switching valve according to this invention, in which figure a is a longitudinal cross-sectional view, figure b is a cross-sectional view taken along the line bb--b of figure a, and figure c is a cross-sectional view of figure a. FIG. 2 is a perspective view showing the essential parts of this invention, and FIG. 3 is a sectional view showing an example of a conventional switching valve. 3...Switching spool valve, 5...Outlet port, 6,7
...Port, 20...Sliding valve body, 29...Suction conduit, 40...Inner cylinder body, 41...Outer cylinder body, 42
, 43...Groove, 44...Pilot valve.

Claims

[Scope of utility model registration request]

An outlet provided in the valve seat of the switching spool valve, a port located on both sides of the outlet and opening respectively, and a sliding part provided slidably in the valve seat of the switching spool valve and rubbing against the valve seat. A sliding valve body that selectively communicates the outlet with one of the outlets by forming a fluid path on the moving surface, and a negative pressure pipe that communicates with the suction conduit connected to the outlet. and a pilot valve that slides the sliding valve body of the switching spool valve by switching the switching spool valve. A switching valve characterized in that a groove is formed between the heavy cylindrical body to serve as a communication pipe communicating the pilot valve and the switching spool valve, and a negative pressure pipe communicating the pilot valve and the suction conduit.