JPS61181159U

JPS61181159U -

Info

Publication number: JPS61181159U
Application number: JP1985064200U
Authority: JP
Priority date: 1985-05-01
Filing date: 1985-05-01
Publication date: 1986-11-12

Description

[Brief explanation of the drawing]

第１図は本考案に係るリツプシールの第１の実
施例を示す装着状態の半裁断面図、第２図および
第３図は漏洩試験結果のグラフ、第４図は第２の
実施例を示す装着状態の半裁断面図、第５図は従
来例に係るリツプシールの装着状態の半裁断面図
、第６図は同要部拡大断面図である。２……ハウジング、３……軸孔、１１……回転
軸、１５，２０……リツプシール、１６……リツ
プ部材、１６ｂ……リツプ部材内径部、１７……
先端部、１８，２１……環状厚肉部、Ａ……密封
流体。 Fig. 1 is a half-cut sectional view showing the first embodiment of the lip seal according to the present invention in the installed state, Figs. 2 and 3 are graphs of leakage test results, and Fig. 4 is the mounting state showing the second embodiment. FIG. 5 is a half-cut sectional view of the conventional lip seal in the attached state, and FIG. 6 is an enlarged sectional view of the same essential part. 2... Housing, 3... Shaft hole, 11... Rotating shaft, 15, 20... Lip seal, 16... Lip member, 16b... Lip member inner diameter part, 17...
Tip part, 18, 21...Annular thick wall part, A...Sealing fluid.

Claims

[Scope of utility model registration request]

It consists of an annular metal case that is hermetically fitted into the inner periphery of the shaft hole of the device housing, and an annular lip member whose outer diameter portion is hermetically fixed inside the case,
In the lip seal, the inner diameter portion of the lip member, which is bent or curved and protrudes toward the sealed fluid side in the axial direction, comes into sliding contact with the outer peripheral surface of the rotating shaft with appropriate surface pressure to prevent leakage of the sealed fluid. A lip seal characterized in that an annular thick-walled portion is formed at or near the axial tip of the inner diameter portion of the member, the thickness being locally increased.