JPS6259366U

JPS6259366U -

Info

Publication number: JPS6259366U
Application number: JP1985149032U
Authority: JP
Priority date: 1985-10-01
Filing date: 1985-10-01
Publication date: 1987-04-13

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す半裁断面図、
第２図は試験による摺動部の面荒れ状態を示す拡
大断面図、第３図は漏洩試験結果を表わすグラフ
、第４図は従来構造を示す半裁断面図、第５図は
ゴム材製環状シートのクラツク発生状態を示す要
部断面斜視図である。１…リツプシール、２…ゴム材製環状シート、
２ａ，４ａ…内径リツプ部、２ｂ，４ｂ…外径部
、４…四フツ化エチレン樹脂材（ＰＴＦＥ）製環
状シート、５，１３…バツクアツプリング、１３
ａ…内径部、１３ｂ…外径軸方向部、６…ハウジ
ング、８…Ｏリング、１０…ケース、１１…シヤ
フト、Ａ…密封対象流体、Ｂ…大気。 FIG. 1 is a half-cut sectional view showing an embodiment of the present invention;
Figure 2 is an enlarged sectional view showing the surface roughness of the sliding part due to the test, Figure 3 is a graph showing the leakage test results, Figure 4 is a half-cut sectional view showing the conventional structure, and Figure 5 is an annular shape made of rubber material. FIG. 2 is a perspective cross-sectional view of a main part showing a state in which a crack occurs in the seat. 1... Lip seal, 2... Rubber material circular sheet,
2a, 4a... Inner diameter lip part, 2b, 4b... Outer diameter part, 4... Annular sheet made of polytetrafluoroethylene resin material (PTFE), 5, 13... Backup spring, 13
a...Inner diameter part, 13b...Outer diameter axial direction part, 6...Housing, 8...O ring, 10...Case, 11...Shaft, A...Fluid to be sealed, B...Atmosphere.

Claims

[Scope of utility model registration request]

A metal case that is hermetically fitted to the inner periphery of the shaft hole of the equipment housing, an annular sheet made of ethylene fluoride resin on the atmosphere side whose outer diameter portion is hermetically fixed inside the case, and a sealed fluid side. In a lip seal made of an annular sheet made of a rubber-like elastic material, the inner diameter lip portion of each annular sheet bends and protrudes toward the fluid to be sealed and slides against the shaft, at least the atmosphere of the annular sheet made of the rubber-like elastic material On the side thereof, a back-up spring made of a metal material or a highly rigid resin material is provided, the outer diameter part of which is fixed to the case, and the inner diameter part of which is bent along the curved surface of the annular sheet. Lipstick featuring.