TENSIONING SYSTEM FOR A TRACTION MECHANISM DRIVE

摘要

The invention relates to a tensioning system (1) of a traction mechanism drive, which comprises a tensioning lever (4) which has a tensioning roller (5) positioned at the end and which is arranged so as to be rotatable by way of a pivot bearing (3) with respect to a base element (2) positioned in a stationary manner. The pivot bearing (4) is formed by a hub (24) of the tensioning lever (4), said hub being rotatably arranged on a bearing pin (22) of the base element (2) by way of a plain bearing (23). A torsional moment is introduced into the tensioning lever (4) by a spring element (5) inserted between the base element (2) and the tensioning lever (4) so that the tensioning roller contacts the traction mechanism in a non-positive manner. In the installed state, the base element (2) of the tensioning system (1) is positioned in a cylindrical receptacle (11) of a machine part (12). A friction device (9), which interacts on the inside with the spring element (6) and on the outside with a separate component, is provided to dampen actuating movements of the tensioning lever (4).