PROBLEM TO BE SOLVED: To provide a grass mower blade-attaching structure capable of simply and quickly performing replacement work of a mowing blade without a tool, and to provide a blade which can be used two or more times with one mowing blade.SOLUTION: In a mowing blade-attaching structure, a mowing blade 3 is removably attached to a tip of a rotary stay 2 driven to rotate by a motor of a grass mower 1. The rotary stay 2 is provided with an insert mounting part 21 at the tip for slidably inserting an attaching part 31 of the mowing blade 3 in the longitudinal direction of the rotary stay 2. The rotary stay 2 is provided with a lock pin-mounting hole 22 for inserting a lock pin 4 penetrating a vertical wall of the insert mounting part 21. The mowing blade 3 is like a flat plate, a mounting part 32 is provided with a through hole 33 for inserting the lock pin 4 and a slit 34 narrower than a bore diameter of the through hole 33 is formed from the through hole 33 along the insert direction. The lock pin is provided with a groove part 41 able to be inserted in the slit 34 to engage therewith.COPYRIGHT: (C)2014,JPO&INPIT【課題】 刈刃の交換作業に工具を必要とすることなく簡単かつ迅速に行うことができる草刈機の刈刃取付構造、及び1本の刈刃で複数回の使用が可能な刈刃の提供。【解決手段】 草刈機1の原動機により回転駆動する回転ステイ2の先端に刈刃3を着脱可能に取り付ける刈刃取付構造であって、回転ステイ2は、その先端に刈刃3の取付部31を回転ステイ2の長手方向に沿って摺動自在に差し込むための差込装着部21を有し、回転ステイ2には、差込装着部21の上下壁を貫通してロックピン4を差し込むロックピン装着孔22を有し、刈刃3は平板状をなし、取付部32には、ロックピン4を差し込むための貫通孔33を有し、該貫通孔33から差込方向に沿って貫通孔33の口径より幅狭のスリット34が形成され、ロックピン4には、スリット34内に差込係合可能な溝部41を備えている。【選択図】 図6
