| 摘要 |
A rotatable coupling comprises rotatable driving and driven members between which is pivotally connected one or more linkages each comprising tangential and radial links connected together by a pivotal connection. The distance between the pivotal connections at the ends of the tangential link is not less than 0.35 of the radial distance between the axis of rotation of the coupling and the pivotal connection between the tangential link and the driving or driven member. The linkage is so arranged as to be deformed by relative rotation between the driving and driven members in at least one direction. The deformation is opposed by a resilient bush at the pivot between the two links and at least the major part of the torque transmitted by the coupling, in its normal operating speed range, is transmitted by tension in the links caused by straining the resilient bush. |
