JPS59174478U

JPS59174478U - O-ring suction prevention sleeve

Info

Publication number: JPS59174478U
Application number: JP6958383U
Authority: JP
Inventors: 筒井　勇夫; 幸男菅野; 信夫鵜沢; 健一木村
Original assignee: 日立建機株式会社
Priority date: 1983-05-10
Filing date: 1983-05-10
Publication date: 1984-11-21

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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図ないし第５図は従来技術を示すもので、第１図は
流体通路を形成する部材間の接合面にＯリングを介装し
た状態を示す断面図、第２図ないし第５図はそれぞれ異
なる従来技術によるＯリングの吸込み防止機構を設けた
第１図と同様の断面図、第６図は本考案の第１の実施例
を示す０リングの吸込み防止用スリーブを装着した第１
図と同様の断面図、第７図は本考案の第２の実施例を示
すＯリングの吸込み防止用スリーブを流体通路とそれを
閉塞する部材との間に装着した状態を示す断面図である
。ＩＡ、ＩＢ、３１・・・流体通路、２Ａ、　　２Ｂ、　
　３２・・・部材、３．３５・・・０リング、４．３４
・・・シール収納溝、２１．３６・・・吸込み防止用ス
リーブ、２１Ａ・・・スリット、２２．３７・・・流路
、３３・・・メクラフランジ。1 to 5 show the prior art, in which FIG. 1 is a sectional view showing a state in which an O-ring is interposed on the joint surface between members forming a fluid passage, and FIGS. 2 to 5 are FIG. 6 is a cross-sectional view similar to that shown in FIG. 1, in which O-ring suction prevention mechanisms according to different conventional techniques are installed, and FIG.
FIG. 7 is a sectional view similar to the one shown in the figure, and FIG. 7 is a sectional view showing a state in which an O-ring suction prevention sleeve according to a second embodiment of the present invention is installed between a fluid passage and a member that closes it. . IA, IB, 31...Fluid passage, 2A, 2B,
32... Member, 3.35... 0 ring, 4.34
... Seal storage groove, 21.36 ... Suction prevention sleeve, 21A ... Slit, 22.37 ... Channel, 33 ... Mekura flange.

Claims

[Scope of utility model registration request]

It is formed of a thin-walled, self-expanding cylindrical body, and self-expands by being disposed on the inner circumferential side of the 01J ring provided on the inner circumferential wall that forms the fluid passage, and the outer circumferential surface of the cylindrical body is pressed against the inner circumferential wall. A sleeve for preventing suction of an O-ring, which is configured to be able to be positioned by frictional force between the sleeve and the inner circumferential wall.