JPH0332232U

JPH0332232U -

Info

Publication number: JPH0332232U
Application number: JP9332389U
Authority: JP
Priority date: 1989-08-08
Filing date: 1989-08-08
Publication date: 1991-03-28

Description

[Brief explanation of drawings]

第１図は流量の急変防止手段を有するスプール
とバイパス通路とを示す断面図、第２図は流量の
急変防止手段を有するスプールとバイパス通路と
の別の実施例を示す断面図、第３図はシヨツクア
ブソーバの断面図、第４図はシヨツクアブソーバ
の要部の拡大断面図、第５図は流量の急変防止手
段を有するスプールとバイパス通路とのさらに別
の実施例を示す断面図である。１０…シリンダ、１２…ピストン、１４…ピス
トンロツド、２６，２８…液室、３０，３２…ポ
ート、３４，４０…弁体、４２…バイパス通路、
４４…スプール、４３ｄ，４５ａ…環状溝、５６
，６２…防止手段、８４…操作手段。 FIG. 1 is a cross-sectional view showing a spool and a bypass passage having a means for preventing sudden changes in flow rate, FIG. 2 is a cross-sectional view showing another embodiment of a spool and a bypass passage having means for preventing sudden changes in flow rate, and FIG. 4 is an enlarged sectional view of essential parts of the shock absorber, and FIG. 5 is a sectional view showing yet another embodiment of a spool and a bypass passage having means for preventing sudden changes in flow rate. 10... Cylinder, 12... Piston, 14... Piston rod, 26, 28... Liquid chamber, 30, 32... Port, 34, 40... Valve body, 42... Bypass passage,
44... Spool, 43d, 45a... Annular groove, 56
, 62...Preventing means, 84... Operating means.

Claims

[Scope of utility model registration request]

a cylinder; a piston that is movably arranged inside the cylinder and has a port that partitions the inside of the cylinder into two liquid chambers and communicates the two liquid chambers; and a valve body that opens and closes the port; having a bypass passage that communicates two liquid chambers;
a piston rod coupled to the piston, a spool movable in the axial direction of the piston rod and operable from the outside, disposed on the piston rod so as to be able to open and close the bypass passage, and when the spool opens the bypass passage; or and means for preventing sudden changes in the flow rate of liquid flowing through the bypass passage when closed.