PROBLEM TO BE SOLVED: To provide an electric working machine which enables the safe and sure attachment and detachment of a battery unit to and from a machine frame.SOLUTION: The electric machine has a machine frame for supporting an electric motor, a battery unit which is detachably mounted on the machine frame and supplies power to the electric motor through power feeders, a power supply switch disposed on the power feeder in the battery unit, a motor power supply control portion for controlling the ON or OFF of the power supply switch on the basis of a switching condition of an operation switch obtained through signal wires, and a connector unit 9 having a terminal group for connecting the signal wires and the power feeders on the battery unit side to the signal wires and the power feeders on the machine frame side, wherein, when the battery unit is mounted, the terminals of the power feeders are connected, before the terminals of the signal wires are connected, and, when the battery unit is released, the terminals of the power feeders are disconnected, after the terminals of the signal wires are disconnected.COPYRIGHT: (C)2013,JPO&INPIT【課題】バッテリユニットの機体への安全で確実な装着と取り外しが可能な電動作業機を提供することである。【解決手段】電動モータを支持する機体と、機体に離脱可能に装着されるとともに電動モータに給電線を介して給電するバッテリユニットと、当該バッテリユニット内の給電線に設けられた給電スイッチと、信号線を介して得られる操作スイッチのスイッチ状態に基づいて給電スイッチの開閉を制御するモータ給電制御部と、バッテリユニット側の信号線及び給電線と機体側の信号線及び給電線とを接続する端子群を有するコネクタユニット9とを備え、バッテリユニットの装着時には給電線の端子が信号線の端子より先に接続し、バッテリユニットの離脱時には給電線の端子が信号線の端子より後から接続解除する。【選択図】図8
