PROBLEM TO BE SOLVED: To provide an inexpensive cutter with high working efficiency which solves the above-mentioned drawbacks with a simple constitution, and improves the life span thereof.SOLUTION: The cutter is provided with a driving source, a housing which accommodates the driving source, a cam mechanism driven by the driving source, first and second blades reciprocated relative to each other by the cam mechanism, and an engagement surface shape for the cam, the blade or the cam and the blade in the engagement surface of the cam and blade such that component forces are applied in the diverging direction of the cam and the blade.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2017,JPO&INPIT【課題】 簡単な構成で上記した欠点を解決し、寿命を向上させるとともに、安価で作業能率の良い刈込機を提供する。【解決手段】 駆動源と、駆動源を収容したハウジングと、駆動源によって駆動されるカム機構と、カム機構によって相対的に往復動される第1及び第2のブレードと、カムとブレードの係合面においてカムとブレードが乖離する方向へと分力が働くためのカム又はブレード又はカムとブレードの係合面形状とを備える。【選択図】図2
