PROBLEM TO BE SOLVED: To maintain, by an easy method as much as possible, the cutting performance of vegetation by a rotary blade for mower.SOLUTION: A mower includes a support medium, a rotary blade 20 for mower supported to be rotatably around a rotation axis with respect to the support medium, and a rotation drive part for rotating the rotary blade 20 for mower. The rotary blade 20 for mower includes a discoid rotary blade body 22, and a plurality of cutting blades 30 provided protrusively around the rotary blade body 22. Each of the plurality of cutting blades 30 includes a plurality of division blades 34 aligned along a circumferential direction of the rotary blade body 22, separably with respect to the rotary blade body 22.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2019,JPO&INPIT【課題】草刈用回転刃による草木の切断性能を、容易な方法でなるべく維持できるようにすることを目的とする。【解決手段】草刈機は、支持体と、支持体に対して回転軸周りに回転可能に支持された草刈用回転刃20と、草刈用回転刃20を回転させる回転駆動部とを備える。草刈用回転刃20は、円板状の回転刃本体22と、回転刃本体22の周囲に突出するように設けられた複数の切断刃30とを備える。複数の切断刃30のそれぞれは、回転刃本体22に対して分離可能な状態で、回転刃本体22の周方向に沿って並ぶ複数の分割刃34を含む。【選択図】図3
