| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To close a lid plate of a packing box with a virgin lock function by the secure virgin lock. <P>SOLUTION: In a packing box 10, a latch piece 30 provided to a back plate 12 includes a detachable part 31 detachably joined to another part of the back plate 12 and an upper end latch part 32 coupled to an upper center of the detachable part 31 in a width direction. The upper end latch part 32 has a tongue shape that is surrounded by a coupling 32A of the upper end latch part 32 to the upper center of the detachable part 31 in the width direction, horizontal slits 32B extending horizontally from both sides of the coupling 32A in the width direction, and a bulged curve line 32C connecting outer ends of the horizontal slits 32B on both sides with respect to the coupling 32A. The latch piece 30 further includes inclined slits 33A extending obliquely upward from inner ends of the horizontal slits 32B on both sides with respect to the coupling 32A and the inclination being a blunt angle with respect to the horizontal slits 32B. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
