| 摘要 |
A frictional clutch for a hand-held device for transferring a film from a backing tape onto a substrate comprises a first main member (1) having a cylindrical element (5) coaxially protruding into a circular center opening (7) of a second main member (2). The first and second main member (1, 2) are supported such that they can carry out a relative rotational movement. The second main member (2) comprises coaxial tensioning elements (4) for holding and pre-tensioning an elastic ring (3) guided around said tensioning elements (4), The tensioning elements (4) are geometrically arranged such that ring (3) is exposed in the form of at least one secant-shaped leg in the center opening (7).
The secant-shaped leg (6) of the ring (3) is biased radially outwards when the cylindrical element (4) of the first main member (1) is inserted into the center opening (7) of the second member (2) in order to produce a frictional force between the ring and the circumferential wall of the cylindrical element (5). |
