SEALING DEVICE - NOK CORP

Title:

SEALING DEVICE

Document Type and Number:

WIPO Patent Application WO/2020/021935

Kind Code:

A1

Abstract:

A sealing device for sealing a gap between a housing and a rotary shaft arranged in a shaft hole provided in the housing. The sealing device is equipped with: an attachment part attached to the shaft hole; an inner annular part; a seal lip that makes contact with an outer circumferential surface of the rotary shaft; a bellows part connecting the attachment part and the inner annular part; a sound-insulating ring secured to the attachment part; and an annular sound-insulating lip protruding from the inner annular part or the bellows part toward the sound-insulating ring. The sound-insulating lip protrudes obliquely outward in the radial direction. The sound-insulating ring has an annular portion that makes contact with the tip end of the sound-insulating lip. The annular portion of the sound-insulating ring is inclined with respect to the axial direction of the shaft hole such that the distance between an outside portion of the annular portion and the inner annular part when projected in the axial direction of the shaft hole is greater than the distance between an inside portion of the annular portion and the inner annular part when projected in the axial direction.

Inventors:

SUZUKI ATSUSHI (JP)

Application Number:

PCT/JP2019/025061

Publication Date:

January 30, 2020

Filing Date:

June 25, 2019

Export Citation:

Click for automatic bibliography generation Help

Assignee:

NOK CORP (JP)

International Classes:

F16J15/3232; F16J3/04; F16J15/3224; F16J15/3252; F16J15/52; G10K11/16

Foreign References:

JPH09242880A	1997-09-16
JP2004316795A	2004-11-11
JP2016020721A	2016-02-04

Other References: