CHAIN GUIDE AND CHAIN DRIVING GEAR - NTN TOYO BEARING CO LTD

Title:

CHAIN GUIDE AND CHAIN DRIVING GEAR

Document Type and Number:

WIPO Patent Application WO/2013/011916

Kind Code:

A1

Abstract:

The invention is designed to prolong the life of the outer circumferential surfaces of chain guide rollers (41) in chain guides by limiting frictional wear. The respective ends of multiple roller shafts (31) are supported by a pair of opposing side plates (22) of guide bases (21), the guide bases being disposed facing each other on one side of a torque transmission timing chain (5). The multiple roller shafts (31) respectively support the multiple chain guide rollers (41), which are roller bearings, so as to be freely rotatable. Early frictional wear of the outer circumferential surfaces of the rollers (41) due to contact with the timing chain (5) is prevented by using rollers, the surface hardness of which is harder than the surface hardness of the timing chain (5) by a Rockwell hardness of 4 points or more, for the rollers (41).

Inventors:

KATO AKIO (JP)
OISHI SHINJI (JP)

Application Number:

PCT/JP2012/067808

Publication Date:

January 24, 2013

Filing Date:

July 12, 2012

Export Citation:

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Assignee:

NTN TOYO BEARING CO LTD (JP)
KATO AKIO (JP)
OISHI SHINJI (JP)

International Classes:

F16C19/26; F16H7/18; F16C19/46; F16C29/04; F16C33/64; F16H7/08

Domestic Patent References:

WO2010090139A1	2010-08-12
WO2010090139A1	2010-08-12

Foreign References:

JP2000266141A	2000-09-26
JPH10184828A	1998-07-14
JPH08105499A	1996-04-23
JP2008260995A	2008-10-30

Other References: