US 11,732,785 B2
Chain guide mechanism
Volkmar Nyga, Osaka (JP); Seigo Ohsawa, Osaka (JP); Munehiro Maeda, Osaka (JP); and Yuji Oshima, Osaka (JP)
Assigned to TSUBAKIMOTO CHAIN CO., Osaka (JP)
Filed by TSUBAKIMOTO CHAIN CO., Osaka (JP)
Filed on Nov. 5, 2021, as Appl. No. 17/519,691.
Claims priority of application No. 2021-004890 (JP), filed on Jan. 15, 2021.
Prior Publication US 2022/0228649 A1, Jul. 21, 2022
Int. Cl. F16H 7/18 (2006.01); F16H 7/06 (2006.01); F16H 7/08 (2006.01); F01L 1/02 (2006.01)
CPC F16H 7/18 (2013.01) [F16H 7/06 (2013.01); F16H 7/08 (2013.01); F01L 1/022 (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 mechanism capable of integrally supporting components on a frame, the components including a plurality of sprockets, a chain that is passed over the plurality of sprockets, and a fixed chain guide and a pivoting chain guide that slidably guide the chain,
the pivoting chain guide including a cylindrical mounting boss protruding outward from one side in a guide width direction,
the frame including a sprocket support part that supports each of the plurality of sprockets when the chain is passed over the sprockets, a fixed chain guide support part that supports the fixed chain guide, and a pivoting chain guide holding part that holds the cylindrical mounting boss in a state of a loose fit,
the pivoting chain guide holding part being configured to allow the cylindrical mounting boss to be fitted therethrough from one side,
the cylindrical mounting boss has, on an outer circumferential surface, a double flat side part that is a pair of flat surfaces parallel to each other,
the pivoting chain guide holding part has a planar shape and includes a loose fit part in C shape in plan view from an axial direction of the cylindrical mounting boss, and guide portions each provided at both ends of the loose fit part, and
the pivoting chain guide holding part is configured so as to hold the pivoting chain guide in a pivotable manner when the double flat side part is inserted between opposite inner side faces of the guide portions and the pivoting chain guide is rotated.