FRICTION COUPLING FOR THE TORQUE-LIMITING TRANSMISSION OF FORCE BETWEEN A COIL CORE FOR WINDING OR UNWINDING A TAPE AND A ROTARY SUPPORT.

摘要

In a friction coupling for the torque-limiting transmission of force between a coil core (9) of a coil for winding or unwinding a tape (4) and a rotary support for said core (9) there is a first coupling component (21) with an annular cross-section and a second coupling component taking the form of a moulding (18'; 22'), in which the annular coupling component (21) is in frictional engagement at several spaced contact points (15) distributed over its periphery with contact area regions on the moulding and in which one (18'; 22') of the two coupling components is secured to the core (9) of the coil while the other coupling component (21) is a component of the rotary support. Here, the moulding (18'; 22) is rigidly dimensionally stable while the annular first coupling component (21) is made of a flexible material. On the occurrence of a relative movement between the two coupling components (21; 18', 22'), the moulding (18', 22') continually deforms the annular coupling component (21) via the contact points (15').