JPS6353028U

JPS6353028U -

Info

Publication number: JPS6353028U
Application number: JP14745086U
Authority: JP
Priority date: 1986-09-26
Filing date: 1986-09-26
Publication date: 1988-04-09

Description

[Brief explanation of the drawing]

第１図は本考案の実施例に係る回路図、第２図
はチルトダンパの縦断正面図、第３図は第２図の
−線縦断側面図である。１……シリンダ、２……ピストン、３……ピス
トンロツド、４……第１の油室、５……第２の油
室、６……逆支弁、７……バイパス、９……リリ
ーフバルブ、１１……加圧タンク。 FIG. 1 is a circuit diagram according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional front view of the tilt damper, and FIG. 3 is a longitudinal sectional side view taken along the line -- in FIG. 1... Cylinder, 2... Piston, 3... Piston rod, 4... First oil chamber, 5... Second oil chamber, 6... Check valve, 7... Bypass, 9... Relief valve, 11... Pressurized tank.

Claims

[Claims for Utility Model Registration] (1) A piston rod is movably inserted into the cylinder via a piston, and the piston has a first oil chamber on the side of the piston rod and a second oil chamber on the opposite side of the piston rod. The first and second
The oil chambers communicate via a bypass and a check valve in the piston that opens during compression.
A relief valve is provided in the bypass so as to be openable and closable, and the bypass downstream of the relief valve and the second oil chamber are connected to a pressurized tank via an on-off valve. (2) The damper according to claim 1, wherein the relief valve is opened by external operation or when the pressure in the first oil chamber exceeds a predetermined pressure. (3) The damper according to claim 1, wherein the pressurized tank is provided outside the cylinder. (4) The damper according to claim 1, in which the on-off valve is opened and closed by external operation. (5) A valve body is provided at an arbitrary position of the cylinder, and the valve body is formed with a passage that communicates the pressurized tank and the second oil chamber and a passage that communicates the first and second oil chambers. A non-return valve and a push rod facing the non-return valve are provided in the middle of a passage that allows the first and second oil chambers to communicate, and are biased in the closing direction. An energized relief valve and a push rod facing the relief valve are provided, and the outer end of each push rod faces a rotatable operating lever, and the operating lever is provided with a horizontal surface and a recess to allow rotation of the operating lever. 2. The damper according to claim 1, wherein each push rod selectively contacts a horizontal surface or a recessed portion by movement.