| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fastener with which the sheets such as corrugated boards can be detachably fixed in a stacked state. <P>SOLUTION: Holes in the same shape are bored in a plurality of sheets as objects to be fastened and one binding hole 6 is produced when they are stacked, and the thickness of a fitting plate 2 having a contour to fit in the binding hole 6 is equal to the thickness of a binding hole part of the sheets to be fastened. An internal face plate 3 is formed at an inner side face of the fitting plate positioned on the rear surface of the sheets while an external face plate 1 is formed on the outer side face of the fitting plate positioned on the front surface of the sheets. A slit 4 is formed in the center from the external face plate side to enable the central part to be flexural only in one direction so that an angle shape is formed toward the external face plate. The internal face plate protrudes from the outer edge of the fitting plate 2 at a right angle to the slit 4, and a projected shape of the internal face plate 3 of the bent fastener onto the sheet surface is within the binding hole 6, while a projected shape of the expanded fastener can not be within the binding hole 6, and irrespective of bending or expansion of the fastener, the projected shape of the external face plate 1 can not be within the binding hole. <P>COPYRIGHT: (C)2012,JPO&INPIT |
