JPH03115231U

JPH03115231U -

Info

Publication number: JPH03115231U
Application number: JP2369190U
Authority: JP
Priority date: 1990-03-12
Filing date: 1990-03-12
Publication date: 1991-11-28

Description

[Brief explanation of the drawing]

第１図から第４図はこの考案の第１の実施例を
説明するための図であつて、第１図は最圧縮時の
縦断面図、第２図は最伸長時の縦断面図、第３図
はガス封入時の縦断面図、第４図はガスの封入時
におけるバルブの拡大断面図、第５図および第６
図はこの考案の第２の実施例を説明するための図
であつて、第５図は最伸長時における要部の縦断
面図、第６図はガスの封入時における要部の縦断
面図である。１……内筒（シリンダ）、２……ピストン、３
……ピストンロツド、４……外筒（アウターチユ
ーブ）、１５……フリーピストン、１６……スプ
リング、１７，２０……連通路（ガス流路）、Ｐ
_１……第１圧力室、Ｐ_２……第２圧力室、Ｐ_２−
１，Ｐ_２−２……分室、Ｐ_０……通路室、Ｖ……
バルブ。 1 to 4 are diagrams for explaining the first embodiment of this invention, in which FIG. 1 is a longitudinal cross-sectional view at maximum compression, FIG. 2 is a longitudinal cross-sectional view at maximum expansion, Figure 3 is a longitudinal sectional view when gas is filled in, Figure 4 is an enlarged sectional view of the valve when gas is filled in, and Figures 5 and 6.
The figures are diagrams for explaining the second embodiment of this invention, in which Fig. 5 is a vertical cross-sectional view of the main part at maximum extension, and Fig. 6 is a longitudinal cross-sectional view of the main part when gas is filled. It is. 1...Inner tube (cylinder), 2...Piston, 3
... Piston rod, 4 ... Outer tube, 15 ... Free piston, 16 ... Spring, 17, 20 ... Communication path (gas flow path), P
₁ ...First pressure chamber, _P2 ...Second pressure chamber, _{P2-
1} , P _2-2 ... branch room, P ₀ ... passage room, V ......
valve.

Claims

[Claims for Utility Model Registration] 1. A piston equipped with a piston rod is housed inside the inner cylinder, and a first pressure chamber through which the piston rod penetrates and a second pressure chamber through which the piston rod does not penetrate are defined in the inner cylinder, and the inner cylinder and A passage chamber is formed between the outer cylinder and the second outer cylinder.
A length-adjustable gas spring having a valve that can be opened and closed in a communication path between the pressure chamber and the passage chamber, and communicating the first pressure chamber and the passage chamber, wherein two second pressure chambers are provided in the inner cylinder. A length-adjustable gas valve comprising a free piston that is defined into two compartments, and a spring that is compressed by the piston when the gas spring is fully extended in the first pressure chamber of the inner cylinder. spring. 2. The valve is provided with an opening/closing part that communicates and shuts off communication between one branch chamber and the passage chamber of the second pressure chamber and the gas injection path, and the inner cylinder is provided with an opening/closing part that allows the piston to push the spring to a maximum. 2. The length-adjustable gas spring according to claim 1, further comprising a gas flow path that communicates the other branch of the second pressure chamber with the passage chamber when compressed. 3. The valve is provided with an opening/closing part that communicates with and shuts off between one of the branch chambers and the passage chamber of the second pressure chamber and the gas injection path, and the inner cylinder is provided with an opening/closing part that allows the piston to push the spring to a maximum. 2. The length-adjustable gas spring according to claim 1, further comprising a gas flow path that communicates the other branch of the second pressure chamber with the first pressure chamber when the spring is compressed.