| 摘要 |
A tensioner 10, for a timing chain, belt or the like in an internal combustion engine, has a projection-preventing hook 15 that secures a spring-urged plunger 11in a withdrawn condition prior to installation of the tensioner 10, but releases the plunger 11 during operation so that the plunger 11 can exert a force on a pivoted chain- or belt-engaging tensioner lever. A resisting member is provided on a fulcrum pin 14 on which the hook 15 is pivoted, in order to exert a frictional force on the hook 15, thereby preventing the hook 15 from unexpectedly returning to its plunger 11 latching condition and preventing vibration noise to movements of the hook 15. The tensioner 10 can be mounted without regard to its direction, and therefore a threaded mounting can be used, simplifying mounting and demounting of the tensioner 10. |
