Device for automatic supply of dry-wall screw to screwing device of cordless electric screwdriver, has supply rail with surface along which axis of screws is aligned parallel to field lines that roll in direction of gradients

摘要

The device has a screwing pin (1) axially moved and staying coaxial to axles of screws. A spring (2) is switched between a supply rail and a screwdriver. The spring exerts return force and holds the screwing pin above a screw head in detached state. The supply rail consists of a running surface along which symmetry axis of the screws is aligned approximately parallel to magnetic field lines. The field lines run vertically to feeding direction and roll in a direction of magnetic field gradients directed in the feeding direction. An independent claim is also included for a method for pivoting screws.