| 摘要 |
PROBLEM TO BE SOLVED: To certainly fix paper to a wall and enable a stud to be removed easily from the wall by providing a lead on the outer peripheral face of the needle part of the stud. SOLUTION: The stud 1 is of such a construction that it has a head part 2, a needle part 3 connected to the head part 2 and a lead as a helical groove formed along the outer peripheral face of the needle part 3. When paper is fixed to a wall, for example, the needle part 3 whose tip is pointed is introduced into the wall and the head part 2 is made to adhere to the wall face and further the paper is fixedly clamped between the wall face and the head part 2. In this case, the lead 4 is formed on the outer peripheral face of the needle part of the stud 1. For this reason, a frictional force is increased on a contact face between the needle part 3 and the wall, so that the paper can be securely fixed to the wall. In addition, when the paper is removed from the wall, the outer peripheral face of the head part 2 of the stud 1 is pinched and the stud 1 is rotated using the needle part 3 as an axial center. Thus the stud 1 can be easily removed from the wall like a screw.
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