US 11,927,267 B2
Chain guide and chain transmission device using same
Toshiya Naoe, Ishikawa (JP); and Hideaki Seki, Ishikawa (JP)
Assigned to DAIDO KOGYO CO., LTD., Ishikawa (JP)
Filed by DAIDO KOGYO CO., LTD., Ishikawa (JP)
Filed on Jul. 16, 2021, as Appl. No. 17/377,738.
Application 17/377,738 is a continuation of application No. PCT/JP2020/001994, filed on Jan. 21, 2020.
Claims priority of application No. 2019-008802 (JP), filed on Jan. 22, 2019.
Prior Publication US 2021/0341038 A1, Nov. 4, 2021
Int. Cl. F16H 7/18 (2006.01); F16H 7/06 (2006.01); F16H 7/08 (2006.01)
CPC F16H 7/18 (2013.01) [F16H 7/06 (2013.01); F16H 7/08 (2013.01); F16H 2007/0872 (2013.01); F16H 2007/0893 (2013.01); F16H 2007/185 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A chain guide comprising:
a main body including a fixing portion configured to fix the main body to a fixing member;
first and second shoe portions each of which is made of a synthetic resin having wear resistance and includes a sliding contact surface that is in sliding contact with the chain; and
a vibration control portion having a zero-touch surface extending along a travel line of the chain, wherein
the zero-touch surface is a linear or curved surface located away from the travel line of the chain so as to contact with the chain in a case where a string vibration of the chain occurs such that the zero-touch surface controls the string vibration of the chain,
the first shoe portion is fixed to a first end portion in a longitudinal direction on a front surface side of the main body,
the second shoe portion is fixed to a second end portion, opposite to the first end portion, in a longitudinal direction on the front surface side of the main body, and
the vibration control portion having the zero-touch surface is integrally molded with the main body in such a manner that the vibration control portion is disposed between the first and second shoe portions.