Patent ID: 7231854

Claim:
A connected-screw driver having a driver unit provided with a motor, an output shaft rotated by the motor, a housing adapted to house these motor and output shaft, and a bit fixed to the output shaft, a slider case fixed to the housing so that the bit is inserted therethrough, and a slider provided in the slider case so that the slider can be moved reciprocating therein; an engagement member adapted to be engaged with a member to be tightened; and adapted to feed the connected screws in accordance with the reciprocating movements of the slider, characterized in that: the slider is provided with a chuck mechanism, which is adapted to temporarily retain a screw, which has come off from the screw connecting belt, until the screw has been engaged with the member to be tightened, in such a manner that the slider can be moved in the axial direction of the bit; and a regulating mechanism adapted to regulate and fix a position of the chuck mechanism in the axial direction of the bit.