JPH0333241U

JPH0333241U -

Info

Publication number: JPH0333241U
Application number: JP9383289U
Authority: JP
Priority date: 1989-08-11
Filing date: 1989-08-11
Publication date: 1991-04-02

Description

[Brief explanation of drawings]

第１図は本考案ガススプリングの構成の一例を
示す断面図、第２図は従来のガススプリングの構
成の一例を示す断面図である。１…リザーバ（外筒）、２…シリンダ（内筒）
、３…弁部材、４…弁棒、５…上部室、６…環状
室、７…連通孔、９…ピストン、１０…ピストン
ロツド、１１…下部室、１２…ガイド部材、１８
…シール室、２０…下部連通路、２１…上部連通
路、２２…ストツパ部、３０…潤滑油。 FIG. 1 is a sectional view showing an example of the structure of the gas spring of the present invention, and FIG. 2 is a sectional view showing an example of the structure of a conventional gas spring. 1...Reservoir (outer cylinder), 2...Cylinder (inner cylinder)
, 3... Valve member, 4... Valve stem, 5... Upper chamber, 6... Annular chamber, 7... Communication hole, 9... Piston, 10... Piston rod, 11... Lower chamber, 12... Guide member, 18
...Seal chamber, 20...Lower communication passage, 21...Upper communication passage, 22...Stopper part, 30...Lubricating oil.

Claims

[Claims for Utility Model Registration] It has an annular chamber formed between an inner cylinder and an outer cylinder,
The inner cylinder, in which pressurized gas is sealed together with lubricating oil, is divided into an upper chamber and a lower chamber by a slidable piston, and the piston rod of the piston is connected to the lower end of the inner cylinder to maintain air-liquid tightness. A gas spring comprising: a sealing member provided for slidably projecting; and a communication passage provided near a lower end of the inner cylinder for communicating the annular chamber with the lower chamber, the inner cylinder comprising: The communication passage provided near the lower end is arranged at a high position while maintaining a distance from the upper surface of the seal member, and the lubricating oil can be stored up to the communication passage arranged at the high position. gas spring.