JPH0478310U

JPH0478310U -

Info

Publication number: JPH0478310U
Application number: JP12274690U
Authority: JP
Priority date: 1990-11-22
Filing date: 1990-11-22
Publication date: 1992-07-08

Description

[Brief explanation of drawings]

第１図は本考案の実施例の要部断面図、第２図
は同流路の構成図、第３図は変形例の断面図であ
る。１……シリンダ、３ａ，４ａ……クツシヨン室
、５……シールリング、７……ピストン、８ａ，
８ｂ……クツシヨンリング、１０ａ，１０ｂ……
圧力室、１１ａ，１１ｂ，２７……バイパス流路
、１２ａ，１２ｂ……速度制御機構、１４ａ，１
４ｂ，２６……ニードル弁、１５ａ，１５ｂ，２
３……チエツク弁、１７，２５……リツプ。 FIG. 1 is a sectional view of a main part of an embodiment of the present invention, FIG. 2 is a configuration diagram of the same flow path, and FIG. 3 is a sectional view of a modified example. 1...Cylinder, 3a, 4a...Cushion chamber, 5...Seal ring, 7...Piston, 8a,
8b...Cushion ring, 10a, 10b...
Pressure chamber, 11a, 11b, 27... Bypass flow path, 12a, 12b... Speed control mechanism, 14a, 1
4b, 26...needle valve, 15a, 15b, 2
3... Check valve, 17, 25... Lip.

Claims

[Claims for Utility Model Registration] 1. A cylinder having mutually opposing cushion chambers and seal rings attached to the inner peripheral surfaces of these cushion chambers, a piston that reciprocates within the cylinder, and the strokes of the pistons on both sides of the cylinder. A cushion ring that slides into contact with the seal ring near the end and fits into the cushion chamber, a pair of bypass passages that communicate the cushion chamber with a pair of pressure chambers partitioned by a piston, and a flow rate arranged in series. A fluid pressure device with a speed control mechanism, comprising a speed control mechanism having a regulating valve and a check valve and installed in each bypass flow path, the two check valves having flow blocking directions opposite to each other. Cylinder. 2. The fluid pressure cylinder with a speed control mechanism according to claim 1, wherein the check valve has a lip that opens and closes the bypass flow path by moving toward and away from the flow rate regulating valve or the bypass flow path using fluid pressure.