| 摘要 |
PROBLEM TO BE SOLVED: To simplify an internal structure of a reciprocating mechanism, since there is a problem of complicating the internal structure for incorporating various parts such as a mechanism for decelerating a rotation output of an electric motor, a motion converting mechanism for reciprocating an output rod, a counterweight for restraining vibration and an orbital motion mechanism, for example, in a reciprocating saw.SOLUTION: A decelerating mechanism such as a gear train is omitted by using an outer rotor motor capable of outputting low speed rotation and high torque as an electric motor 10, and an output rod 7 is reciprocated by a cam mechanism 21 including a cylindrical groove cam 22 arranged in an outer rotor 12 so that an internal structure is simplified by reducing the number of part items. |
