| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric power tool that can inhibit the occurrence of a failure due to heat generated by a motor while suppressing an increase in the number of components.SOLUTION: In the electric power tool, a control part CP estimates a current flowing to a motor 17 using a voltage drop amount from a reference voltage, and when an operation time of the motor 17 with the estimated current exceeds an operable time, determines that the motor 17 is provided with overload to stop the motor 17.SELECTED DRAWING: Figure 2 |
