To provide an idler link which is provided for a bucket link for rocking a bucket, and improved in strength by employing a relatively simple structure.

The idler link (36) is formed of a flat plate-like link body (36a) which is long and has pin holes (20, 22) bored in both ends thereof, and a band-shaped reinforcing plate (36b) which is formed in one body together with the link main body so as to be erected from one surface of the same between the pairing pin holes on a line (X) connecting between centers of the respective pin holes. The link main body is provided with: arched edges (E1, E2) formed at respective ends; an angle edge (E3) which has a linear portion (S1) extending on one side of the line connecting between the centers and substantially in parallel with the same, and is convexed from the pairing arched edges; and a valley edge (E4) which has a linear portion (S2) extending on the other side of the line connecting between the centers and substantially in parallel with the same, and is concaved from the pairing arched edges.

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