RESIN PULLEY - NTN TOYO BEARING CO LTD

Title:

RESIN PULLEY

Document Type and Number:

WIPO Patent Application WO/2017/022470

Kind Code:

A1

Abstract:

A pair of annular grooves (19) are formed in the outside-diameter surface of an outer race (11) of a rolling bearing (10) in which a pulley body (30) is molded from a resin, a linear knurl is molded by rolling in the outside-diameter surface of an annular protruding section (20) formed between the pair of annular grooves (19), and groove-shaped recesses (21) and projections (22), both of which reach the pair of annular grooves (19) at both ends, are provided alternately in the circumferential direction. The diameter (φB) of a circle through the groove bottoms of the recesses (21) is greater than the diameter (φA) of a circle through the groove bottom of either annular groove (19) (φB > φA). The pulley body (30) is molded from a resin on the outside-diameter surface of the outer race (11), and protruding parts (36), formed by filling the groove-shaped recesses (21) with a melted resin which is then solidified, are engaged with the projections (22) to prevent creeping.

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Inventors:

NAKAO GORO (JP)

Application Number:

PCT/JP2016/071124

Publication Date:

February 09, 2017

Filing Date:

July 19, 2016

Export Citation:

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Assignee:

NTN TOYO BEARING CO LTD (JP)

International Classes:

B29C59/02; F16H55/48; F16C19/06; F16C33/58; F16C35/067; F16H55/36; B29L31/32

Foreign References:

JP2008249131A	2008-10-16
JP2008050902A	2008-03-06
US4602875A	1986-07-29

Other References: