Screw driver for collated screws and screw feeding machanism of screw driver

摘要

A screw feeding mechanism of a screw driver (10) is provided. The screw feeding mechanism includes a base part (31) and a nose part (30) slidably provided on the base part (31). The nose part (30) includes a rotatable wheel member (33) and an arm member (37) connected to the wheel member (33). The base part (31) includes a guide member (24) having a guide portion (24a) configured to guide a movement of the arm member (37) when the nose part (30) slides. A sliding of the nose part (30) causes a screw feeding operation, and a further sliding of the nose part (30) causes a screw driving operation. The arm member (37) is configured and arranged to vibrate or to rotate in conjunction with at least one of the screw feeding operation and the screw driving operation.