Hand tool with an adjustable rotational speed and torsion force

摘要

A hand tool with an adjustable rotational speed and torsion force includes a shaft rotatably received in a body of the hand tool and driven by a motor that is mounted in the body. A first planet gear set is longitudinally connected to one end of the shaft opposite to the motor and a second planet gear set is longitudinally connected to the first planet gear set. The shaft is longitudinally movable in the body. The hand tool only has the first planet gear set acted thereon when the shaft is pushed toward the second planet gear set. The first planet gear set and the second planet gear set are acted on the hand tool at the same time when the shaft is pulled.