Chain or belt tightening arrangement, comprises complementary cylindrical parts and clamping element

摘要

The basic part (2,10) is designed as a cylindrical element with a semi-cylindrical front segment (11). A helical spring (4) is accommodated inside the part (10) and covered by a second cylindrical part (5) serving as the tensioning lever with a laterally exceeding extension (17) suitable for joining the pulley with the belt or chain. Another semi-cylindrical part (6) is slid along the outer surface of the second part (5) and all elements are kept together by a ring-shaped element (7) clipped to the unit (1).