JPS60149540U

JPS60149540U - gas spring

Info

Publication number: JPS60149540U
Application number: JP3655084U
Authority: JP
Inventors: 保中村; 須加　貞次; 白坂　栄治; 碓井　博
Original assignee: 株式会社昭和製作所
Priority date: 1984-03-14
Filing date: 1984-03-14
Publication date: 1985-10-04

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

図面は本考案の一実施例を示すもので、第１図は本考案
に係るガススプリングの縦断面図、第２図は同ガススプ
リングの伸長工程時のピストン部の拡大断面図、第３図
はチェックバルブの平面図、第４図は第２図４−４線断
面図、第５図はガススプリングの圧縮工程時のピストン
部の破断側　　−面図、第６図は変更実施例に係るガス
スプリングのピストン部の破断側面図、第７図はチェッ
クバルブの平面図、第８はピストンの平面図である。尚、図面中、１はガススプリング、２はシリンダ、３は
ピストンロッド、４はピストン、４ａはオリフィス溝、
４ｂはサイジング、５はピストンワッシャ、６はチェッ
クバルブ、６ａは流路、７はシールリング、Ｓ□は上部
室、Ｓ２は下部室である。The drawings show an embodiment of the present invention, in which Fig. 1 is a longitudinal sectional view of a gas spring according to the invention, Fig. 2 is an enlarged sectional view of the piston portion of the gas spring during the extension process, and Fig. 3 is a longitudinal sectional view of the gas spring according to the invention. 4 is a plan view of the check valve, FIG. 4 is a sectional view taken along the line 4-4 in FIG. 2, FIG. 5 is a broken side view of the piston portion during the compression process of the gas spring, and FIG. FIG. 7 is a plan view of the check valve, and FIG. 8 is a plan view of the piston. In the drawings, 1 is a gas spring, 2 is a cylinder, 3 is a piston rod, 4 is a piston, 4a is an orifice groove,
4b is a sizing, 5 is a piston washer, 6 is a check valve, 6a is a flow path, 7 is a seal ring, S□ is an upper chamber, and S2 is a lower chamber.

Claims

[Scope of utility model registration request]

A piston rod is inserted into the cylinder, a piston that is slidably fitted to the inner circumference of the cylinder is connected to the end of the piston rod, and a disk-shaped check valve is interposed between the piston and the piston washer. In the gas spring, a seal ring that fits on the inner periphery of the cylinder is interposed between the piston washer and the check valve, and the piston has a seal ring that connects the inside and outside of the seat surface of the check valve on the upper surface of the piston. The check valve is characterized in that an oil passage that communicates therewith and a flow passage located outside the seating surface in the sliding direction are formed, and the check valve is provided with a flow passage located inside the seating surface. gas spring.