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

PCT No. PCT/EP97/00653 Sec. 371 Date May 12, 1999 Sec. 102(e) Date May 12, 1999 PCT Filed Feb. 13, 1997 PCT Pub. No. WO97/30922 PCT Pub. Date Aug. 28, 1997In a friction coupling for the torque-limiting transmission of force between a core of a coil for winding or unwinding a tape and a rotary support for said core there is a first coupling component with an annular cross-section and a second coupling component taking the form of a moulding, in which the annular coupling component is in frictional engagement at several spaced contact points distributed over its periphery with contact area regions on the moulding, and in which one of the two coupling components is secured to the core of the coil, and the other coupling component is a component of the rotary support. The moulding is rigidly dimensionally stable while the annular first coupling component is made of a flexible material. On the occurrence of a relative movement between the two coupling components, the moulding continually deforms the annual coupling component via the contact points.