PROBLEM TO BE SOLVED: To provide a cutting blade for a bush cutter obtaining a higher cutting effect than a conventional two-blade cutting blade and mountable to a bush cutter on the market.SOLUTION: The cutting blade of double structure is provided by placing a cutting blade of the same shape over the board surface of a disk-like cutting blade. One cutting blade is formed as a rotary blade 10 connected to a rotating shaft Q, and the other cutting blade is formed as a fixed blade 20 fixed so as not to rotate. The fixed blade 20 is rotatably connected to the upper face of the rotary blade 10. The upper face of the fixed blade 20 is provided with a fixed blade locking implement 21 so as to be locked to the tip part of the bush cutter 1. The cutting blade is constituted to rotate only the rotary blade 10 along the board surface of the fixed blade 20.COPYRIGHT: (C)2013,JPO&INPIT【課題】従来の二枚重ねの刈刃よりも高い切削効果が得られ、しかも、市販の刈払機にも装着することが可能な刈払機用刈刃を提供する。【解決手段】円板状の刈刃の盤面に同じ形状の刈刃を重ねて二重構造の刈刃を設ける。一方の刈刃を回転シャフトQに連結する回転刃10とする。他方の刈刃を回転しないように固定する固定刃20とする。固定刃20を回転刃10の上面に回転自在に連結する。固定刃20の上面に固定刃係止具21を設け、刈払機1の先端部分に係止させる。固定刃20の盤面に沿って回転刃10のみが回転するように構成する。【選択図】 図1
