| 摘要 |
<p>A hinge (10), for example for rear view mirror for a vehicle, comprises first and second members (12, 11) hinged about a pin (13) secured to the second member (11). A detent arrangement normally holds the two members in one position relative to each other, but permits them to be deflected from that position. The detent arrangement comprises a camming surface (33) on the first member and a follower on the hinge pin which is spring biassed against the camming surface. In order to provide for low friction the follower comprises a pair of rollers (32) which are mounted on respective axles projecting radially from the hinge pin. Furthermore, in order to reduce friction and wear, the rollers (32) taper towards the axis of the hinge pin and the camming surface is correspondingly inclined. Thus, along the line of contact of each roller with the camming surface, the roller can roll along the camming surface rather than skid.</p> |
