| 摘要 |
A motor-driven rotary tool with internal heating temperature detecting function capable of conveniently and easily preventing a damage such as low temperature burn from being applied to an operator by the heating of an electric motor incorporated in the holding part the motor-driven rotary tool, comprising the electric motor (12) incorporated in the holding part thereof for performing operations such as screw tightening by driving a rotary tool such as a screwdriver bit by the driving of the electric motor, a torque setting and automatically stopping means for detecting a load torque generated in the rotary tool after the specified operations are completed and stopping the driving of the rotary tool when the load torque reaches a preset torque value, a temperature sensor (20) installed in the casing of the electric motor (12) incorporated in the holding part, and a power shutdown means (25) for detecting the heated state of the casing with the temperature sensor when the temperature of the casing is increased to 55 to 75° C. or higher by the heating of the electric motor and stopping the driving of the electric motor.
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