JPH0227063U

JPH0227063U -

Info

Publication number: JPH0227063U
Application number: JP10586288U
Authority: JP
Priority date: 1988-08-10
Filing date: 1988-08-10
Publication date: 1990-02-22

Description

[Brief explanation of drawings]

第１図は本考案の一実施例に係るＯリングの取
付部構造の要部縦断面図、第２図は第１図の取付
溝の部分正面図、第３図は第１図の取付溝の突起
の他の態様を示す要部縦断面図、第４図は第１図
の取付溝に凹溝を形成した例を示す要部縦断面図
、第５図は第４図の凹溝の他の態様を示す要部縦
断面図、第６図は第１図の取付溝に突起と凹溝の
両方を形成した例を示す縦断面図、第７図は第６
図の要部拡大断面図、第８図は第６図の凹凸形状
の他の態様を示す要部拡大断面図、第９図は第１
図のＯリング取付部のＯリングに圧力が作用して
いる状態の要部縦断面図、第１０図は第９図のＯ
リング取付部のＯリング内周側のシール面圧分布
を示すグラフ、第１１図は従来のＯリング取付部
に圧力が作用している状態の要部縦断面図、第１
２図は第１１図のＯリングの内周側シール部のシ
ール面圧の分布を示すグラフ、第１３図および第
１４図は従来のＯリング取付部の摺動時の摩擦力
の状態を示す要部縦断面図、第１５図は従来のＯ
リングのねじれ損傷を示す概略図である。符号の説明、１…Ｏリング、１１…内周、１２
…外周、２…ピストン、３…取付溝、３１…溝底
、４…シリンダ、５…突起、６…凹溝、Ｐ…圧力
ピーク、Ｆ…摩擦力。 Fig. 1 is a longitudinal cross-sectional view of a main part of the O-ring mounting structure according to an embodiment of the present invention, Fig. 2 is a partial front view of the mounting groove shown in Fig. 1, and Fig. 3 is a partial front view of the mounting groove shown in Fig. 1. FIG. 4 is a vertical cross-sectional view of the main part showing an example in which a groove is formed in the mounting groove of FIG. 1, and FIG. 6 is a vertical sectional view showing an example in which both protrusions and grooves are formed in the mounting groove of FIG. 1, and FIG.
8 is an enlarged sectional view of the main part showing another aspect of the uneven shape of FIG. 6, and FIG. 9 is an enlarged sectional view of the main part of
Figure 10 is a vertical cross-sectional view of the main part of the O-ring mounting part in a state where pressure is applied to the O-ring.
A graph showing the seal surface pressure distribution on the inner circumferential side of the O-ring at the ring mounting part, Fig. 11 is a vertical cross-sectional view of the main part in a state where pressure is applied to the conventional O-ring mounting part, Fig. 1
Figure 2 is a graph showing the distribution of seal surface pressure at the inner peripheral seal part of the O-ring in Figure 11, and Figures 13 and 14 show the state of frictional force during sliding of the conventional O-ring mounting part. A vertical cross-sectional view of the main part, Figure 15 is a conventional O
FIG. 3 is a schematic diagram showing torsional damage to a ring. Explanation of symbols, 1... O-ring, 11... Inner circumference, 12
...Outer circumference, 2...Piston, 3...Mounting groove, 31...Groove bottom, 4...Cylinder, 5...Protrusion, 6...Concave groove, P...Pressure peak, F...Frictional force.

Claims

[Claims for Utility Model Registration] O for sealing between two members that move relatively back and forth
In an O-ring mounting structure in which the O-ring is mounted in a mounting groove provided in one of two members, the O-ring contacts the mounting groove and the contact surface of the O-ring bites into the O-ring contact area. An O-ring mounting structure characterized by having a concavo-convex portion that restricts slippage of the O-ring.