SEALING DEVICE

To provide a sealing device capable of preventing the leakage of a sealing object when a rotary shaft normally/reversely rotates, and when the rotary shaft rotates at high speed.SOLUTION: A sealing device 1 has a reinforcing ring 10, and an elastic body portion 20. A seal lip 21 of the elastic body...

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Bibliographic Details
Main Authors YAMAGUCHI YUKA, HAMAMOTO KOKICHI, MIZUTA HIROKATA, SATO SUKETAKA, YOSHIOKA MASAYA
Format Patent
LanguageEnglish
Japanese
Published 13.12.2021
Subjects
BLASTING
CYLINDERS
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
PISTONS
SEALINGS
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:To provide a sealing device capable of preventing the leakage of a sealing object when a rotary shaft normally/reversely rotates, and when the rotary shaft rotates at high speed.SOLUTION: A sealing device 1 has a reinforcing ring 10, and an elastic body portion 20. A seal lip 21 of the elastic body portion 20 has a lip tip end portion 22 that is a convex annular part toward an axis x on an inner peripheral side. On an atmosphere side surface 23 on the opposite side to a sealing object side of the lip tip end portion 22, a plurality of screw projections 30 protrusively projecting out from the atmosphere side surface 23 is provided. The screw projections 30 extends along the axis x.SELECTED DRAWING: Figure 1 【課題】回転軸の正逆回転の際も、また、回転軸の高速回転の際も、密封対象物の漏れの防止を図ることができる密封装置を提供する。【解決手段】密封装置１は、補強環１０と、弾性体部２０とを有している。弾性体部２０のシールリップ２１は、内周側において軸線ｘに向かって凸の環状の部分であるリップ先端部２２を有している。リップ先端部２２の密封対象物の側とは反対側の大気側面２３には、大気側面２３から突出する突起であるネジ突起３０が複数設けられている。ネジ突起３０は軸線ｘに沿って延びている。【選択図】図１
Bibliography:Application Number: JP20200090528