Tensioner for traction unit e.g. chain for internal combustion engine of e.g. car, has friction device arranged between outer wall of piston and inner wall of housing, which generates increased friction to retract piston from housing

摘要

The tensioner (1) has a housing (2) containing piston (3) whose one end (15) is engaged with tensioning rail for deflecting traction unit. A friction device (9) is arranged between the outer wall (4) of the piston and inner wall (5) of the housing, so as to generate increased friction to retract piston from the housing.