| 摘要 |
PURPOSE: A screw nail anchor is provided to fit a screw nail into a wall without driving a nail by using a hammer, to easily eliminate the nail, and to remain no marks of the nail on the wall. CONSTITUTION: A screw nail anchor comprises an insertion unit(13), a screw groove(12), and a flange unit(11). The insertion unit is arranged in the inside of a wall(100) and has a cone shape. The screw groove is formed in the middle part of the insertion unit. The screw groove is joined to a screw thread(21) of a screw nail(20). The flange unit is arranged in an outer side of the insertion unit. The flange unit has diameter larger than the maximum diameter of the insertion unit. The flange unit is arranged on a surface of the wall.
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