JPS6424768U

JPS6424768U -

Info

Publication number: JPS6424768U
Application number: JP11899387U
Authority: JP
Priority date: 1987-08-03
Filing date: 1987-08-03
Publication date: 1989-02-10

Description

[Brief explanation of the drawing]

第１図および第２図はこの考案によるパツキン
の実施例を示し、第１図は全体の概略断面図、第
２図は全体の概略斜視図、第３図〜第５図はそれ
ぞれスリツパリングの他の実施例を示す全体の概
略断面図、第６図および第７図は従来のパツキン
を示し、第６図はピストンとシリンダチユーブと
の間に配設した状態を示す概略断面図、第７図は
パツキンの概略断面図である。８，２８……バツクリング、８ａ，９ａ……テ
ーパー面、９，２９……バツクアツプリング、１
０，３０……スリツパリング、２１……シリンダ
チユーブ、２２……ピストン本体、２３……ロツ
ド、２４……ピストン、２５，２６……溝、２７
……軸受け。 Figures 1 and 2 show examples of the packing according to this invention, with Figure 1 being a schematic sectional view of the whole, Figure 2 being a schematic perspective view of the whole, and Figures 3 to 5 respectively showing other parts of the slip ring. 6 and 7 show a conventional packing, FIG. 6 is a schematic sectional view showing a state in which it is disposed between a piston and a cylinder tube, and FIG. 7 shows a conventional packing. is a schematic cross-sectional view of the packing. 8, 28... Back ring, 8a, 9a... Tapered surface, 9, 29... Back up ring, 1
0, 30... Slipper ring, 21... Cylinder tube, 22... Piston body, 23... Rod, 24... Piston, 25, 26... Groove, 27
……bearing.

Claims

[Claims for Utility Model Registration] (1) A gasket that is disposed in a groove 26 of a piston 24 that is disposed within a cylinder tube 21 and moves reciprocally to seal between both 21 and 24, the gasket being , a trapezoidal back ring 8 which is annular and has tapered surfaces 8a, 8a formed on both sides thereof and whose width becomes narrower from the inner circumferential surface to the outer circumferential surface; and the tapered surface 8a.
, 8a, and has an outer circumferential surface located outward from the outer circumferential surface of the back ring 8.
, 9, the backing springs 9, 9, and the backing ring 8,
A packing comprising a slipper ring 10 whose inner peripheral surface is in contact with the back ring 8 and whose outer peripheral surface is in contact with the inner surface of the cylinder tube 21. (2) The seal according to claim 1, wherein the slipper ring 10 has a protrusion formed on its outer peripheral surface, and the protrusion contacts the inner surface of the cylinder tube 21.