chain

Abstract

This invention relates to a chain comprising a plurality of interconnected three-element link units. Each three-element link unit includes two inner links arranged opposite each other, two outer links arranged opposite each other on the outer side of one end of the inner links, and a pin passing between the inner and outer links. Each inner link includes two inner roller portions and a connecting plate portion extending outward from the outer edge of the inner roller portions. The inner edge of the connecting plate portion forms a guide slope. Each outer link includes two outer plate ends and a connecting plate portion connecting the outer plate ends. This invention, through the structural design of the connecting plate portion of the inner links in the three-element link unit, and by widening the connecting plate portion of the inner links and the connecting plate portion of the outer links, allows the sprocket teeth to smoothly engage and provide a good stopping effect during speed change, effectively improving the switching efficiency and stability of the chain.

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