JPH0317480U

JPH0317480U -

Info

Publication number: JPH0317480U
Application number: JP7882089U
Authority: JP
Priority date: 1989-07-04
Filing date: 1989-07-04
Publication date: 1991-02-21

Description

[Brief explanation of the drawing]

第１図〜第３図は本考案の一実施例を示すもの
で、第１図はそのスプールバルブの縦断面図、第
２図は第１図の−線断面図、第３図は第１図
の要部拡大図、第４Ａ図および第４Ｂ図はそのス
プールバルブを定量供給装置に適用した例を示す
概略図、第５図および第６図は従来のスプールバ
ルブを示す図である。Ｒｓ……シールリング、３……リヤブラケツト
（ブラケツト）、４……バルブケーシング、４ａ
……バルブ室、５……フロントブラケツト（ブラ
ケツト）、７……スプール、７ａ，７ｂ……グル
ーブ、８_１〜８_５……リテーニングリング、８ａ
，８ｂ……円周溝（流路）、８ｃ……連通溝（流
路）、１０_１〜１０_５……ポート。 Figures 1 to 3 show an embodiment of the present invention, in which Figure 1 is a longitudinal cross-sectional view of the spool valve, Figure 2 is a cross-sectional view taken along the - line in Figure 1, and Figure 3 is a cross-sectional view of the spool valve. 4A and 4B are schematic diagrams showing an example in which the spool valve is applied to a quantitative supply device, and FIGS. 5 and 6 are diagrams showing conventional spool valves. Rs... Seal ring, 3... Rear bracket (bracket), 4... Valve casing, 4a
...Valve chamber, 5...Front bracket (bracket), 7...Spool, 7a, 7b...Groove, ₈₁ to ₈₅ ...Retaining ring, 8a
, 8b...Circumferential groove (flow path), 8c...Communication groove (flow path), ₁₀₁ to ₁₀₅ ...Port.

Claims

[Claims for Utility Model Registration] A valve casing 4 having a cylindrical valve chamber 4a and ports ₁₀₁ to ₁₀₅ communicating the valve chamber 4a to the outside; In the spool valve, the spool 7 is provided with grooves _7a and 7b that allow the ports ₁₀₁ _{to 105} _to communicate with each other. and a flow path 8a that can communicate with the grooves 7a and 7b.
, 8b, 8c are formed on the retaining ring 8 ₁ ~8 ₅ and seal rings Rs made of a flexible material are arranged in a stacked state alternately, and the seal rings Rs are arranged in the axial direction of the spool 7 by brackets 3 and 5 arranged at both ends of the valve chamber 4a. A spool valve characterized in that the inner surface of the valve casing 4 and the outer surface of the spool 7 are brought into close contact with each other by being compressed and deformed to bulge in the radial direction.