| 摘要 |
<p>A lightweight drive chain (2) includes a plurality of parallel pairs of outer chain plates (3) and a plurality of parallel pairs of inner chain plates (4) . Each of the outer chain plates (3) further has a pair of first weight-reducing slots (36), each of which extends radially from a first hole periphery (351) of a respective one of first pin holes (35) in each of the outer chain plates (3) . The first weight-reducing slots (36) are not in spatial communication with each other. Each of the inner chain plates (4) further has a second weight-reducing slot (46) disposed between second pin holes (45) in each of the inner chain plates (4).</p> |
