Chain

摘要

Inner links of a chain are formed as an integral link unit, each having a pair of connecting pin portions and a pair of plate portions coupling the pair of connecting pin portions, so as to have higher strength and improved durability, whereby the cost of the chain is reduced because of the ease of assembly and a reduction in the number of components. The chain is formed by coupling together link units and pairs of link plates alternately and pivotally in a longitudinal direction of the chain. The link unit is formed by inseparably joining a pair of connecting pin portions and a pair of plate portions at joint parts.

主权项

1. A chain, formed by a plurality of inner links and outer links alternately and pivotally coupled together in a longitudinal direction of the chain, and placed over a sprocket,
the inner links each being formed as a link unit having a pair of connecting pin portions spaced apart in the longitudinal direction of the chain and a pair of plate portions coupling the pair of connecting pin portions and spaced apart in a width direction of the chain, the pair of connecting pin portions and the pair of plate portions being inseparably joined at pairs of joint parts, the outer link being formed by a pair of link plates, and the pair of link plates sandwiching the pair of plate portions in the width direction of the chain and being pivotally coupled to the connecting pin portions to be spaced apart in the width direction of the chain.