SEALING STRUCTURE IN WHICH ANNULAR POCKET AND SEALING DEVICE ARE USED

Title:

SEALING STRUCTURE IN WHICH ANNULAR POCKET AND SEALING DEVICE ARE USED

Document Type and Number:

WIPO Patent Application WO/2017/199963

Kind Code:

A1

Abstract:

Provided is a sealing structure in which an annular pocket and a sealing device are used, the sealing structure making it possible to suppress exposure of a seal lip of the sealing device to foreign matter infiltrating from the outside. A sealing structure (1), in which an annular pocket and a sealing device are used, is provided with an annular pocket (10) and a sealing device (20). The pocket (10) is provided to a slinger (30), and the sealing device (20) is attached to a housing (41) of a differential device (40). The slinger (30) is placed on an output shaft (42) of the differential device (40), a recess (12) of the pocket (10) is defined by an inner peripheral cylinder part (31), an outer peripheral cylinder part (32), and a bottom part (33) of the slinger (30), and an outer peripheral surface (11) of the pocket (10) is formed in the outer peripheral cylinder part (32) of the slinger (30). The outer peripheral surface (11) of the pocket (10) increases in diameter toward the outer side, and increases along the direction of an axis line (x). A side lip (29) of the sealing device (20) extends toward the outer side, and an annular gap (g1) is formed between the side lip (29) and the pocket (10).

Inventors:

KAMIYA YUSUKE (JP)
MATSUI HIROKI (JP)
OMOTO SHINYA (JP)
NAKASHIMA TORU (JP)
MIZUTA HIROTAKA (JP)

Application Number:

PCT/JP2017/018383

Publication Date:

November 23, 2017

Filing Date:

May 16, 2017

Export Citation:

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Assignee:

NOK CORP (JP)

International Classes:

F16J15/447; F16C33/78; F16C33/80; F16J15/3232

Foreign References:

JP2010190323A	2010-09-02
JP2015052350A	2015-03-19
JP2006057825A	2006-03-02
JP2011089558A	2011-05-06

Other References: