PROBLEM TO BE SOLVED: To allow easy mounting of a cutting blade cover on a cutting blade, and to further enhance general-purpose properties of the cutting blade cover.SOLUTION: There is provided a bush cutter 11 including a cutting blade 16 made of a steel material, and freely rotatably installed at the tip of an operation rod 12, and designed to rotate and drive the cutting blade 16 with an engine provided at the rear end of the operation rod 12. In the bush cutter 11, the cutting blade cover 31 freely detachably mounted on the cutting blade 16 is installed. The cutting blade cover 31 is formed with a resin material into a shape of a bottomed cylinder composed of a cover frame 32 opposing to the surface in the shaft direction of the cutting blade 16, and a cylindrical blade tip guard 33 connected to the cover frame 32, and covering the cutting blade 16 from the outside in the radial direction. Three magnets 34 are fixed to the inner surface of the cover frame 32 at an equal interval in the circumferential direction. The cutting blade 16 is covered with the cutting blade cover 31 from the side opposite to the operation rod 12 for the cutting blade 16, and the magnets 34 are bonded to the surface in the shaft direction of the cutting blade 16. Thus, the cutting blade cover 31 is fixed to the cutting blade 16.COPYRIGHT: (C)2013,JPO&INPIT【課題】刈刃に刈刃カバーを容易に装着することができるようにし、さらに、刈刃カバーの汎用性を高めることである。【解決手段】操作棹12の先端に鋼材製の刈刃16を回転自在に設け、この刈刃16を操作棹12の後端に設けたエンジンで回転駆動するようにした刈払機11において、刈刃16に着脱自在に装着される刈刃カバー31を設ける。刈刃カバー31を、樹脂材料により、刈刃16の軸方向表面に対向するカバーフレーム32と、カバーフレーム32に連なり刈刃16を径方向外方から覆う円筒状の刃先ガード33とからなる底付き円筒状に形成し、カバーフレーム32の内面に3つの磁石34を周方向に等間隔に固定する。刈刃カバー31を刈刃16に対して操作棹12とは反対側から刈刃16に被せ、磁石34を刈刃16の軸方向表面に接着させることにより、刈刃カバー31を刈刃16に固定する。【選択図】図5
