| 摘要 |
PURPOSE: A bit and a screw for a driver are provided to prevent the damage or misassembling of the screw or a coupling object by stopping the transmission of rotating power from a drill to a screw or separating a main body from a joining groove. CONSTITUTION: A bit for a driver comprises a main body(20) and a separation guiding unit(30). The main body comprises a combining unit(21) and a body part(22). A screw combining tip(23) of a coupling portion is coupled with the joining groove of a screw. The main body is extended from the coupling portion. The separation guiding unit is installed in the main body. In case the bottom surface of the head portion of a screw is contacted with a fastening object member(15), the separation guiding unit is extended downward longer than the combining unit and contacted with the surface of the fastening object member. While the main body being rotated, the separation guiding unit prevents the insertion of the screw into the object and guides the separation of a coupling member from the joining groove. |
