JPH01165367U

JPH01165367U -

Info

Publication number: JPH01165367U
Application number: JP1988061604U
Authority: JP
Priority date: 1988-05-12
Filing date: 1988-05-12
Publication date: 1989-11-20

Description

[Brief explanation of the drawing]

第１図は本考案に係るリツプ型シールの一実施
例を示す要部概略的断面図、第２図は同じく異常
高温時の作動状態を示す要部概略的断面図、第３
図は従来のリツプ型シールの要部概略的断面図で
ある。１…ハウジング、２…シールボツクス、３…回
転軸、４…金属環、５…リツプ本体、６…先端部
、１０…形状記憶部材。 FIG. 1 is a schematic cross-sectional view of the main part showing an embodiment of the lip-type seal according to the present invention, FIG. 2 is a schematic cross-sectional view of the main part showing the operating state at abnormally high temperatures, and FIG.
The figure is a schematic cross-sectional view of the main parts of a conventional lip-type seal. DESCRIPTION OF SYMBOLS 1... Housing, 2... Seal box, 3... Rotating shaft, 4... Metal ring, 5... Lip body, 6... Tip part, 10... Shape memory member.

Claims

[Claims for Utility Model Registration] 1. On the inner wall of the seal box of the housing,
A lip body made of a rubber elastic body held by a metal ring is fitted, and the tip of the lip body is elastically pressed and slid into contact with the periphery of the rotating shaft inserted into the seal box. In the lip type seal, a shape memory member is embedded in the tip of the lip body, and as the shape memory member undergoes sensitive deformation due to temperature changes at the sliding contact portion, the tip of the lip body is deformed relative to the rotation axis. A lip-type seal characterized by adjustable pressing force. 2 The tip of the lip body has a V-shaped cross section,
2. The lip type seal according to claim 1, wherein the shape of the tip of the shape memory member is similar to that of a V-shape in cross section. 3. The lip-type seal according to claim 1 or 2, wherein the shape memory member is a metal ring having a V-shaped cross section and laminated with a raw material polymer for the shape memory resin.