tensioner equipped with a return spring with a radial friction damper effect of asymmetry

摘要

[Configuration] The present invention tensioner may be configured as part of a power system that applies tension to the endless power transmitting element, such as a continuous loop of the other belt, or chain tensioner. Be rotatable around a first axis, the arm having an arm arbor having a through slot, and a convex portion, the invention tensioner, the arm arbor in a state of being received in the slot of the arm Arbor the projections I constructed from a spring which is coupled to the arm and bushing, disposed adjacent to, by rotation about the first axis above the arm, the tension engages the power transmission element which. This spring, while the arm is rotating in the direction opposite to the tension engagement direction, contacts the projecting portion of the bushing by radially extending, the bushing is radially outward relative to the arm arbor It is pressed, is provided in a position to exert a friction damper effect. [Selection] Figure Figure 1