| 摘要 |
<p>Reciprocating motion can be converted to rotary motion through a crankshaft and a connecting rod. In a rocking joint 30 between a connecting rod and a piston 12, the connecting rod rocks with respect to the piston. In some situations, the connecting rod 32 is a pullrod always in tension or a pushrod always in compression making it difficult to lubricate the bearing surfaces. A joint 30 is disclosed in which the bearing surfaces (Fig.5, 166 & 164) rock with respect to each other with no sliding between the surfaces. The connecting rod 32 has a bearing surface that is part of a cylinder having a radius equal to a distance between a central axis of the journal to which the connecting rod 32 is coupled and the bearing surface 64. The non-circular pin 44 has a convexly- or concavely-curved bearing surface and the local radius is based on material properties and the local peak force that the rocking joint is designed to transmit.</p> |
