Patent ID: 9523413
Filing Date: 2016-12-20
CPC Classification: F16H

Claim Text:
1. A chain tensioner, comprising a tensioner body having a plunger bore, a plunger slidably fitted in the plunger bore, an arm provided to the tensioner body, and a guide shoe pressed by the plunger and pivotally supported on the arm, wherein the arm has at a distal end thereof a pivot pin part, the pivot pin part has a first pin portion extending to one lateral side from the distal end of the arm and a second pin portion extending to the other lateral side, the guide shoe has a bushing part pivotally supported by the pivot pin part, the bushing part of the guide shoe has a mating hole to mate with the first pin portion and a guide part guided by a part of the second pin portion, a slit wider than a portion of the arm facing the guide shoe is provided between the mating hole and the guide part, and the mating hole extends across at least over half of a width of the chain guide surface of the guide shoe.