TENSIONING IDLER OPERATING BY MEANS OF SHEAR AROUND AN IMAGINARY CENTRE OF ROTATION WITH DOUBLE STIFFNESS BY MEANS OF A STOP

摘要

Tensioning idler for transmission by means of a flexible connection operating by means of mechanical grip, the idler being carried by a tensioning lever (1) subjected to an elastic torque producing torsion in a circular sandwich (5) damped by the friction of a friction washer (9) subjected to the axial preloading of said sandwich: the two pivot during a relaxation about an imaginary centre of rotation (C), and during an increase in tension about a stop (11), the two levels of stiffness procured above and below the nominal value being in a ratio of at least two to one. ……