PROBLEM TO BE SOLVED: To provide a rotary blade device which allows suppression of twining of vines etc., around a disk-like blade while suppressing scattering of small stones, mud, etc., with each cord cutter, and mounting thereof on a commercially available brush cutter.SOLUTION: In the rotary blade device including the disk-like blade a housing recessed part installed in the central part on the undersurface of the disk-like blade and the cord cutter mounted on the inside of the housing recessed part, the gap between the cord blade extended from the outer circumferential part of the cord cutter and the undersurface of the disk-like blade is ≤10 mm.COPYRIGHT: (C)2013,JPO&INPIT【課題】コードカッターによる小石や泥等の飛散を抑えつつ、つる草等が円盤形状刃に巻き付くのを抑え、市販の刈払機に取り付けることが可能な回転刃装置の提供を目的とする。【解決手段】円盤形状刃と当該円盤形状刃の下面中央部に設けた収納凹部と当該収納凹部の内側に取り付けたコードカッターからなり、前記コードカッターの外周部から延出したコード刃と前記円盤形状刃の下面との間の隙間が10mm以下であることを特徴とする【選択図】 図1
