PROBLEM TO BE SOLVED: To provide a lawn mowing device in which the collision between blade edges in the rotation can satisfactorily be controlled in a simple structure, the constant sharpness can be maintained for a long time, and thereby good lawn mowing work can always be performed smoothly.SOLUTION: A lawn mowing device is provided for mowing a lawn 10 by grinding between two or more rotary blades 1 and a fixed blade 2 opposed to the rotary blades 1. The device includes a biasing mechanism for biasing the rotary blades 1 and the fixed blade 2 in the direction coming into contact with each other. The device is also provided with a grinding target transfer part 3 in which two or more rotary blades 1 disposed in the rotation direction are disposed in a folding shape, and a target for grinding with the fixed blade 2 is transferred by preceding more than the blade edge part of a position A coming into abutment or approach with the rotary blade 1a at the front side in the rotation direction of the rotary blade 1b at the rear side in the rotation direction and coming into contact with the fixed blade, at the front side end in the rotation direction to the rotary blade 1b at the rear side in the rotation direction among the rotary blades 1 adjacent to each other.COPYRIGHT: (C)2015,JPO&INPIT【課題】簡易な構成で回転時の刃先部同士の衝突を良好に抑制することができ、一定の切れ味を長期間維持して常にスムーズに良好な芝刈作業を行える芝刈装置の提供。【解決手段】複数枚の回転刃1と回転刃1に対向する固定刃2との摺り合わせで芝生10を刈る芝刈装置において、回転刃1と固定刃2とを互いに接触する方向に付勢する付勢機構を備え、前記回転方向に配設する複数枚の回転刃1を折返し状に配置して、隣り合う回転刃1のうち回転方向後方側の回転刃1bにして回転方向前方側端部に、固定刃2に回転方向後方側の回転刃1bの回転方向前方側の回転刃1aと当接若しくは近接する位置Aの刃先部よりも先行接触して固定刃2と摺り合う対象を移行させる摺合対象移行部3を設ける。【選択図】図2
