Axial Damping Tensioner

Abstract: A tensioner for a belt is provided that has independently adjustable forces that press a pulley into the belt and that provide a damping effect for the tensioner. The tensioner comprises a base bracket secured to, for example, an engine block, an arm rotatably engaged with the base bracket, and a pulley rotatably engaged with the arm. A bias member such as a spring is positioned between the arm and the base bracket, and the bias member generates a torsion force in response to an angular displacement where the torsion force presses the pulley into the belt. Then, the bias member generates an axis force in response to axial displacement where the axial force presses the arm into a damping bushing unit to generate a damping effect. Thus, these forces are independently adjustable, and the arrangement of components also reduces tilt between the arm and the base bracket.

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