| 摘要 |
A pivot assembly for coupling a treadle with a bicycle crank is disclosed. The pivot assembly includes a circular seat for being coupled with the crank. Each of two buckle rings received in the circular seat uses a wedge to engage with a connecting shaft of the treadle. By pressing the two buckle rings inward, the wedges leave the connecting shaft so the treadle can be assembled to or disassembled from the crank.
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