JPS5968890U

JPS5968890U - pipe fitting device

Info

Publication number: JPS5968890U
Application number: JP16418982U
Authority: JP
Inventors: 仁小林; 宇野　丈治; 優師岡; 三好　達夫
Original assignee: 三菱電機株式会社
Priority date: 1982-10-29
Filing date: 1982-10-29
Publication date: 1984-05-10

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 the drawing]

第１図Ａ及び第２図は夫々従来の管継手装置の構成を示
す縦断面図、第１図Ｂは第１図Ａに示した従来例の不良
原因を示めす縦断面図、第３図は本考案に係る管継手装
置を適用した例を示す正面図、第４図は同上の管継手装
置の一実施例を示す縦断面図、第５図及び第６図は夫々
同上の管継手装置の他の実施例を示す縦断面図である。１１・・・継手本体、ＩＩＢ、　１２Ａ、　１２Ｂ。１４Ａ・・・シール面、１２・・・ユニオンリンク、１
３・・・送油管、１４・・・ナツト、１５・・・０リン
グ、２０−・・・環状溝。1A and 2 are longitudinal cross-sectional views showing the configuration of a conventional pipe joint device, respectively. FIG. 1B is a longitudinal cross-sectional view showing the cause of failure in the conventional example shown in FIG. 1A, and FIG. 4 is a longitudinal sectional view showing an embodiment of the above pipe joint device, and FIGS. 5 and 6 are respectively the same as the above pipe joint device. It is a longitudinal cross-sectional view which shows another Example. 11...Joint body, IIB, 12A, 12B. 14A... Seal surface, 12... Union link, 1
3... Oil feed pipe, 14... Nut, 15... O ring, 20-... Annular groove.

Claims

[Claims for Utility Model Registration] (1) Having tapered sealing surfaces at both ends in the axial direction;
A union ring into which a pipe to be connected is inserted, and a substantially cylindrical joint body into which the union ring is inserted, the inner end having a tapered sealing surface that comes into contact with the front end sealing surface of the union ring. , a nut having a tapered sealing surface that abuts the rear end sealing surface of the union ring, the nut being coupled to the fitting body and tightening the union ring; A pipe joint device characterized in that an O-ring installed in an annular groove provided on the nut side is interposed on the contact surface between the rear end sealing surface and the sealing surface of the nut. , (2) the annular groove is formed on the large opening end surface of the nut for pipe insertion;
4. The pipe joint device according to claim 1, wherein an O-ring relief part is formed at the boundary between the groove and the outer circumferential surface of the pipe, the O-ring relief part extending in a direction opposite to the nut tightening direction. (3) The pipe joint device according to claim 2, wherein the O-ring relief portion is formed by providing an R portion at the boundary portion. (4) The pipe joint device according to claim 2, wherein the O-ring relief portion is formed by providing a tapered surface on the inner end surface of the annular groove.