| 摘要 |
PROBLEM TO BE SOLVED: To provide a nail for mounting a rail, which is not loosened and prevents the guide rail from chattering even if it is driven to a rail-attaching hole on a hard plastic game board. SOLUTION: The nail A for mounting a rail is driven to a rail-attaching hole 9 for attaching guide rails 1a and 1b on a B surface of the game board. The nail is made of a metal material, formed in a thin and long shape, has one side face 10a protruding in an arc shape, is folded into a U shape at the center in the longitudinal direction, and is shaped into a split pin with the side face 10a as the outer surface. On the side face 10a, two or more retaining protrusions 15 getting into press contact with the inner circumference face 9a of the rail-attaching hole 9 when the nail is driven in the rail-attaching hole 9 are formed in the direction crossing the longitudinal direction. COPYRIGHT: (C)2010,JPO&INPIT
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