| CPC F16H 7/08 (2013.01) [F16H 7/18 (2013.01); F16H 2007/0872 (2013.01); F16H 2007/0893 (2013.01); F16H 2007/185 (2013.01)] | 8 Claims |
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1. A chain guide comprising: a guide shoe that slidably guides a running chain; and a guide body configured to be pivotable around a pivot shaft and supporting the guide shoe,
the guide body including a boss part constituting a circumferential wall of the pivot shaft, a support wall extending forward from the boss part along a plane perpendicular to a pivot axis line, and a running surface-side rib provided along an upper edge of the support wall so as to be in contact with the guide shoe,
the support wall including a base part which is provided with the running surface-side rib and has an upper surface curved in a circular arc, and a connecting portion connecting the base part and the boss part and not provided with the running surface-side rib,
the connecting portion having an upper surface continuous with the upper surface of the base part via a step and a lower surface smoothly continued with a lower surface of the base part, with a cross-sectional area thereof reducing toward the boss part,
the running surface-side rib not being in contact with the boss part, and
the guide body not having a connecting part that has a larger width than a thickness of the support wall and extends in a pivoting direction on a back side of the running surface-side rib in a region at a pivot shaft side end of the running surface-side rib,
wherein the connecting portion has, on the upper surface thereof, an upper face rib plate having a thickness equal to or less than that of the support wall and the upper face rib plate provided so as to extend along the plane perpendicular to the pivot axis line.
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