Patent ID: 7207243

Claim:
A screwdriver, comprising a clutch mechanism, a handle mounted on a first end of the clutch mechanism, and a replaceable screwdriver tip mounted on a second end of the clutch mechanism, wherein: the clutch mechanism includes a mounting seat, an annular sleeve, a positioning member, first and second limit units, a press member, a rotation disk, and a threaded sleeve, wherein: the mounting seat has an inside formed with a receiving chamber and has a peripheral wall formed with two radially opposite guide slots, the receiving chamber of the mounting seat has a bottom wall having a periphery formed with a plurality of receiving recesses; the annular sleeve is mounted on the mounting seat; the positioning member is mounted in the receiving chamber of the mounting seat and has a periphery formed with a plurality of positioning grooves; each of the first and second limit units includes at least one limit member movably mounted in the respective receiving recess of the mounting seat and detachably positioned in the respective positioning groove of the positioning member, and at least one elastic member mounted in the respective receiving recess of the mounting seat and biased between the limit member and the mounting seat to push the limit member toward the positioning member; the press member is rotatably mounted in the mounting seat, the press member is extended through and rotatably mounted in the guide slots of the mounting seat, the press member has two opposite ends each having a first portion located in the receiving chamber of the mounting seat and formed with at least one outwardly extending press portion that is movable to press the limit member of each of the first and second limit units; the rotation disk is rotatably mounted on the mounting seat and secured to the press member to rotate the press member; the threaded sleeve is mounted on the mounting seat and rested on the rotation disk to limit the rotation disk on the mounting seat.