Clutched Damper For A Belt Tensioner

A tensioner comprising:

• a support structure defining a pivot axis;
• an arm coupled to the support structure so as to permit the arm to pivot about the pivot axis, the arm having a lower surface that faces the support structure and an upper surface that in part defines a cup;
• a damping mechanism at least partially seated in the cup of the arm, the damping mechanism comprising:
• a first tensioner component having first ramp features, the first tensioner component engaged to the arm for rotation therewith;
• a second tensioner component having second ramp features, the second tensioner component being non-rotatable about the pivot axis;
• a damper spring coupling the first tensioner component to the second tensioner component;
• and
• a damper bushing positioned between the first tensioner component and the cup of the arm, wherein the damper bushing is mated to the first tensioner component for rotation and translation therewith and is in frictional engagement with the cup;
• wherein the first ramp features are aligned with the second ramp features such that rotation of the first tensioner component in a first direction moves the first ramp features relative to the second ramp features such that the first tensioner component translates relative to the second tensioner component into a damping engagement with the arm.