| 摘要 |
A device for frictional inter-engagement between two mutually movable parts ( 13, 14 ). A lever mechanism exerts counter-directed pressing forces towards both parts to transfers movement between them. A lever ( 25 ) has a free lever end ( 27 ) contacted by a first ( 13 ) of the parts, and opposite to the free end a part-cylindrical convex surface ( 31 ) journalled in a part-cylindrical concave bearing surface ( 33 ). In order to eliminate the risk of jamming of the lever due to excessive surface pressure, it is journalled with rolling bodies, preferably cylindrical bodies ( 34 ). |
