| 摘要 |
An extendable coupling structure used in an engine and coupled between a piston and a crankshaft is constructed to include, a first connector pivoted to the piston, a second connector pivoted to the crankshaft, a hinge coupled between the first connector and the second connector, and a spring-based guide coupled between the bottom end of the first connector and the top end of the second connector and adapted to guide movement of the first connector and the second connector between a close position and an open position and to accelerate rotation of the crankshaft.
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