Electric cable cutter

Abstract

An electric cable cutter is provided which can shorten the working time period, which allows the cutting work to be performed with a rotational torque corresponding to the kind of a work piece, and which has a clutch mechanism that, when a torque repulsion force of a predetermined level or higher is exerted, can cut off a power transmission mechanism. In a configuration wherein the rotational torque of an electric motor is transmitted to a cutter unit via a planetary gear reduction mechanism, the torque is transmitted via a plurality of gears (a constrained-gear train) which are rotatably disposed on a stationary portion and function as means for transmitting the rotational torque from a driving gear disposed in the final stage of the planetary gear reduction mechanism to a rotary blade. In the planetary gear reduction mechanism, projections are disposed on a side face of an internal gear constituting the planetary gear reduction mechanism, and a clutch mechanism is disposed in which a ball urged by a spring is abutted against a position between the projections. The cutter unit is configured by a stationary blade, and the rotary blade in which a sector gear is formed on the outer periphery.