This creates a kind of safe and simple control device structure of grass trimmer,It is that a kind of provide facilitates gripping mower device improvement design that is laborsaving and operating with walk away safety,The holding rod middle section of main what grass trimmer,If the auxiliary rod that an activity pivots,Bar bottom end mowing blade assembles above the end of tool apron,It is fixedly mounted with a fixed frame,For lock group one by before fixed plate,Hou casing locks the protective frame of half shape frame body of knot composition,Make protective frame can safety and firmness frame put,When mowing manipulation is provided,It is designed through the mortise lock of protective frame,The blade of different length is facilitated to do assembling width adjustment,Or assembling transformation is turned to for frame,Reach to hold when mowing and controls laborsaving and operation of mowing safe and practical purpose.本創作一種割草機之安全簡便操控裝置結構，係一種提供方便握持省力及操作使用簡易安全的割草機裝置改良設計，主要於割草機的握持桿中段，設一活動樞轉的輔助桿，桿底端割草刀片組裝刀座的末端處上方，固裝一固定架，供鎖組一由固定板前、後套管鎖結半形框架本體組成的防護架，使防護架可安全穩固架放，提供割草操控時，透過防護架的插鎖設計，方便不同長度的刀片做組裝寬度調整，或為框架轉向組裝變換，達到割草時握控省力及割草操作的安全實用目的。
