PROBLEM TO BE SOLVED: To provide a rotary blade of a mowing machine with an engine in which the rotary blade enables left rotation and also right rotation, and even if the rotary blade hits a leg of people, the rotary blade may not cause a cutting accident of cutting legs and the fatal accident.SOLUTION: A mower blade of a rotary blade is placed in the inside of a rotating plate from an outer circumference of the rotating plate, and blades are added to both sides of the mower blade and a guard is attached to the tip of the mower blade. When the rotary blade rotates, the guard attached on the tip of the mower blade rotates and is turned around an outer circumference of the rotary blade. Even if a leg hits the rotary blade, the guard bounces the leg and prevents the leg from hitting the blade attached to the mower blade. The guard is attached to the tip of the mower blade, and thereby the blades can be attached on both sides of the mower blade. Accordingly, the rotary blade becomes to have the left rotation and also the right rotation, and thereby the rotary blade can be easily and quickly reversed by operating a rotary lever of the mowing machine with the engine.COPYRIGHT: (C)2015,JPO&INPIT【課題】 エンジン付き草刈機の回転刃が、左回転だけでなく右回転もできる回転刃と、回転刃が人の脚などに当たっても、脚を切断する切断事故や死亡事故にならない回転刃を提供する。【解決手段】 回転刃の刈刃を回転板の外周より内側の回転板の中に入れて、その刈刃の両側には刃を付け刈刃の先端にはガードを付けて、回転刃が回転すると刈刃の先端に付けたガードが回転して回転刃の外周を回り、回転刃に脚などが当たってもガードが脚を跳ね返して刈刃に付いた刃に当たらないようにする、刈刃の先端にガードを付けたことにより刈刃の両側に刃を付ける事ができ、回転刃が左回転だけでなく右回転も出来るようになりエンジン付き草刈機の回転レバーを操作して、素早く簡単に回転刃を反転することができる特徴がある。【選択図】図1
