| 摘要 |
<p num="1"><br/><br/><br/>A device for frictional inter-engagement between two mutually movable parts <br/>(13, 14). A lever mechanism exerts counter-directed pressing forces towards <br/>both parts to transfers movement between them. A lever (25) has a free lever <br/>end (27) contacted by a first (13) of the parts, and opposite to the free end <br/>a part-cylindrical convex surface (31) journalled in a part-cylindrical <br/>concave bearing surface (33). In order to eliminate the risk of jamming of the <br/>lever due to excessive surface pressure, it is journalled by means of rolling <br/>bodies, preferably cylindrical bodies (34).<br/> |
