JPS6340654U

JPS6340654U -

Info

Publication number: JPS6340654U
Application number: JP13475886U
Authority: JP
Priority date: 1986-09-02
Filing date: 1986-09-02
Publication date: 1988-03-16

Description

[Brief explanation of drawings]

第１図は本考案のスプール弁の一実施例を示す
構成図、第２図は第１図中―線断面図、第３
図は本考案の他の実施例を示す構成図、第４図は
従来のスプール弁を示す構成図である。１１，１１ａ……タイミング弁（スプール弁）
、１２……バンドブレーキ（摩擦締結要素）、２
０……スリーブ、２０ａ，２０ｂ……液圧通過ポ
ート、２１……スプール、３２……可変室、３３
……オリフイス、３４……大気開放口。 Figure 1 is a configuration diagram showing one embodiment of the spool valve of the present invention, Figure 2 is a sectional view taken along the line in Figure 1, and Figure 3 is a cross-sectional view taken along the line in Figure 1.
This figure is a block diagram showing another embodiment of the present invention, and FIG. 4 is a block diagram showing a conventional spool valve. 11, 11a...timing valve (spool valve)
, 12...Band brake (frictional engagement element), 2
0... Sleeve, 20a, 20b... Hydraulic pressure passage port, 21... Spool, 32... Variable chamber, 33
... Orifice, 34 ... Atmospheric release port.

Claims

[Claim for Utility Model Registration] A spool is moved in response to a signal pressure supplied in opposition to the biasing force of a spring, and the opening degree of a hydraulic pressure passage port is changed in accordance with the amount of movement of this spool. In the spool valve, the spool is provided between the spool and a sleeve that slidably fits the spool, and when the spool is moved in a direction opposing the biasing force of the spring, the volume decreases and the hydraulic pressure passage port or A spool valve characterized by forming a variable chamber into which leak liquid from other ports is introduced, and communicating this variable chamber with the atmosphere through an orifice.