| 摘要 |
PURPOSE: An electric hand drill is provided to enable a worker to safely perform a drilling work by enabling the worker to figure out a balanced state of a hand drill body using a lamp. CONSTITUTION: An electric hand drill is composed of a drill body, a handle unit, and a power supply unit. The drill body rotates a tool using a drive motor, and has an inclination angle sensor, an output unit, and a control unit. The inclination angle sensor senses a balanced position. The output unit informs a user of a current balanced state of a drill. The control unit transmits a sensed signal to the output unit. The handle unit is coupled to the bottom of the drill body. The power supply unit supplies power to the drive motor.
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