JPS61156768U

JPS61156768U -

Info

Publication number: JPS61156768U
Application number: JP4096485U
Authority: JP
Priority date: 1985-03-20
Filing date: 1985-03-20
Publication date: 1986-09-29

Description

[Brief explanation of drawings]

第１図はこの考案による一実施例であるシール
体の断面図、第２図ａは第１図のシール体を取付
けた状態を示す概略図、第２図ｂは第２図ａのＡ
―Ａ線に沿つて見た図、第２図ｃは第２図ａの作
動を示す概略図、第３図ａはこの考案による他の
実施例を示す断面図、第３図ｂは第３図ａのシー
ル体を取付けた状態を示す概略図、第４図はこの
考案によるさらに他の実施例を示す断面図、第５
図ａ，ｂはシール体に設けられる突起の形状を示
す断面図、第６図は従来のシール体を示す断面図
、第７図ａ，ｂは第６図のシール体を取付けた状
態を示す概略図である。１，１１，２０，３１……シール体、１ｃ，１
１ｃ，２０ａ，２０ｂ，２０ｃ……突起、１ａ，
１ｂ，１１ａ，１１ｂ……突出部、２，３２……
ピストン、２ａ，２ｂ，３２ａ，３２ｂ……リン
グ面、２ｃ，１３ｃ，３２ｃ……周面、３，３３
……シリンダ、３ａ，３３ａ……内周面、４，１
４，３４……溝部、４ａ，１４ａ，３４ａ……間
隙、１２……軸、１２ａ……外周面、１３……ハ
ウジング。 Fig. 1 is a cross-sectional view of a seal body that is an embodiment of this invention, Fig. 2 a is a schematic diagram showing the seal body of Fig. 1 in an attached state, and Fig. 2 b is an A of Fig. 2 a.
-A view taken along line A; FIG. 2c is a schematic diagram showing the operation of FIG. 2a; FIG. 3a is a sectional view showing another embodiment of the invention; FIG. FIG. 4 is a sectional view showing still another embodiment of this invention; FIG.
Figures a and b are cross-sectional views showing the shape of the protrusions provided on the seal body, Figure 6 is a cross-sectional view of a conventional seal body, and Figures 7 a and b are views of the seal body of Figure 6 installed. It is a schematic diagram. 1, 11, 20, 31...Seal body, 1c, 1
1c, 20a, 20b, 20c...protrusion, 1a,
1b, 11a, 11b... protrusion, 2, 32...
Piston, 2a, 2b, 32a, 32b...Ring surface, 2c, 13c, 32c...Surrounding surface, 3, 33
...Cylinder, 3a, 33a...Inner peripheral surface, 4,1
4, 34...Groove portion, 4a, 14a, 34a...Gap, 12...Shaft, 12a...Outer peripheral surface, 13...Housing.

Claims

[Claims for Utility Model Registration] (1) A seal body having elasticity and formed in a ring shape, characterized in that a plurality of protrusions are provided on the inner or outer circumferential surface of the seal body. Seal body. (2) The seal body according to claim 1, wherein the protrusion protrudes in a direction perpendicular to the axis of the seal body.