JPH02110758U

JPH02110758U -

Info

Publication number: JPH02110758U
Application number: JP1989018432U
Authority: JP
Priority date: 1989-02-21
Filing date: 1989-02-21
Publication date: 1990-09-05

Description

[Brief explanation of drawings]

第１図は、本考案のリツプ型シールの一実施例
を示すシヤフトを一部切欠いた装着状態の半断面
図、第２図は同じく作用説明図、第３図は従来例
を示す装着状態の半断面図である。２……リツプ部材、２ａ……摺動部、２ｂ……
環状突部、２ｂ′……内周面、７……ハウジング
、９……シヤフト、１０……螺旋溝、１１……貫
通孔、Ａ……密封対象流体。 Fig. 1 is a half-sectional view of the lip-type seal of the present invention in an installed state with a portion of the shaft cut away, Fig. 2 is a diagram illustrating its operation, and Fig. 3 is a conventional example of the lip-type seal in an installed state. It is a half sectional view. 2...Rip member, 2a...Sliding part, 2b...
Annular protrusion, 2b'...inner peripheral surface, 7... housing, 9... shaft, 10... spiral groove, 11... through hole, A... fluid to be sealed.

Claims

[Scope of utility model registration request]

In a lip type seal equipped with a lip member that is attached to the inner circumferential surface of the housing and makes sliding contact with the shaft, the lip member that comes into contact with the fluid to be sealed has an inner circumference extending from the sliding part with the shaft in the axial direction toward the fluid to be sealed. 1. A lip type seal, characterized in that an annular protrusion having a spiral groove is formed on a surface thereof, and a required number of through holes are provided between the sliding part and the annular protrusion.