JPS59108870U - spool valve - Google Patents

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

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の実施例の断面図、第２図はその切換過
程の部分拡大図、第３図及び第４図は弾　゛性環体の他
の実施例の断面図及び正面図、第５図ないし第７図は弾
性環体及び外周溝のそれぞれ異なる実施例を示す部分断
面図である。 １・・・・・・弁筺、２・・・・・・スプール、１１２
．　１　ｌｂ。 １２ａ、　　１２ｂ、　　２３〜２５−−−−−−弾性
環体、１３゜１８．２６〜２８・・・・・・外周溝、１
４．　１７．　２２・・・・・・シール部、１５・・・
・・・肩部、１６・・・・・・隙間。FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2 is a partially enlarged view of the switching process, and FIGS. 3 and 4 are sectional views and front views of other embodiments of the elastic ring body. FIGS. 5 to 7 are partial sectional views showing different embodiments of the elastic ring body and the outer circumferential groove. 1... Bento, 2... Spool, 112
．． 1 lb. 12a, 12b, 23-25--Elastic ring body, 13°18.26-28...Outer circumferential groove, 1
4. 17. 22... Seal part, 15...
...shoulder, 16...gap.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 弁筺とその内部に軸方向へ摺動自在に内挿したスプール
とを備え、該スプールの外周溝に、スプール径方向の幅
がスプール軸方向の厚さより大きい弾性環体を嵌着し、
該弾性環体を弁筺内壁に当接させてその内壁に開口した
流路を開閉するようにしたものにおいて、上記弾性環体
の断面形状を内周側のスプール軸方向幅が外周側のそれ
よりも大きな略台形状のものどじ、外周面の幅方向中央
に弁筺内壁に必要な押しつぶし量で圧接する突環状のシ
ール部を周設すると共に、該外周面における肩部を弁筺
内壁と同等か僅かに小径に形成、し、上記内周側のスプ
ール軸方向幅を少なくともスプールの外周溝の溝幅より
小さくして、該弾性環体の端面とスプールの外周溝との
間に、流体の出入りを許容する隙間を形成したことを特
徴とするスプール弁。It comprises a valve housing and a spool inserted inside the valve housing so as to be slidable in the axial direction, and an elastic ring whose width in the radial direction of the spool is larger than the thickness in the axial direction of the spool is fitted into the outer circumferential groove of the spool,
In a device in which the elastic ring is brought into contact with the inner wall of the valve housing to open and close the flow passage opened on the inner wall, the cross-sectional shape of the elastic ring is such that the axial width of the spool on the inner circumference side is that of the outer circumference side. A substantially trapezoidal valve larger than the above, a protruding ring-shaped seal portion is provided around the center of the outer peripheral surface in the width direction to press against the inner wall of the valve casing with the necessary amount of compression, and a shoulder portion on the outer periphery is connected to the inner wall of the valve casing. The spool is formed to have an equal or slightly smaller diameter, and the axial width of the spool on the inner circumferential side is at least smaller than the groove width of the outer circumferential groove of the spool, so that a fluid is formed between the end face of the elastic ring and the outer circumferential groove of the spool. A spool valve characterized by forming a gap that allows entry and exit of the spool valve.