JPS5942365U

JPS5942365U - Patsuking

Info

Publication number: JPS5942365U
Application number: JP13766782U
Authority: JP
Inventors: 久夫堀
Original assignee: エヌオーケー株式会社
Priority date: 1982-09-13
Filing date: 1982-09-13
Publication date: 1984-03-19
Also published as: JPS633496Y2

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]

図面は本考案の実施例を示すものであり、第１図および
第２図は従来のバッキングの使用状態を示すピストン機
構の部分断面図、第３図および第、４図は本考案の第１
の実施例に係るバッキングの正断面図、第５図および第
６図は同第２の実施例に係るバッキングの正断面図、第
７図および第８図は同第３の実施例に係るバッキングの
正断面図である。１・・・シリンダ部材、２・・・ピストン部材、３・・
・環状溝、４・・・バッキング、５・・・シールリング
、５ａ　　、・・・環状切欠部、５ｂ・・・薄肉部、５
ｃ・・・面取り部、５ｄ・・・段部、５ｅ・・・テーパ
面、６・・・締付リング、７・・・環状空間。The drawings show an embodiment of the present invention, and FIGS. 1 and 2 are partial cross-sectional views of a piston mechanism showing how a conventional backing is used, and FIGS.
5 and 6 are front sectional views of the backing according to the second embodiment, and FIGS. 7 and 8 are front sectional views of the backing according to the third embodiment. FIG. 1... Cylinder member, 2... Piston member, 3...
- Annular groove, 4... Backing, 5... Seal ring, 5a,... Annular notch, 5b... Thin wall part, 5
c... Chamfered portion, 5d... Stepped portion, 5e... Tapered surface, 6... Tightening ring, 7... Annular space.

Claims

[Scope of utility model registration request]

A seal ring made of a tetrafluoroethylene resin material that is in close contact with the other member in a backing that is inserted into an annular groove formed on the opposing peripheral surface of one of the cylinder member and the piston member that are fitted to each other; A fastener made of a rubber-like elastic material that fits into the seal ring and applies close pressure has a ring, and the fastener is formed to have an axial length of the seal ring longer than the axial length of the ring. one end of the seal ring in the axial direction is formed into a thinner wall than the other end, and the tightening is performed by pressing the ring toward the thin wall to form a space between the seal ring and the seal ring. The contact width surface is formed in the axial length of the thin-walled portion so that the contact width surface is in contact with the circumferential surface within the thin-walled portion.