Patent ID: 7303071

Claim:
A packing container for an electronic instrument comprising: four side boards forming side walls of the packing container; a pair of outer bottom flaps serially formed from lower sides of a pair of first side boards opposing each other among said four side boards and serving as a bottom face of the packing container; a pair of inner bottom flaps serially formed from lower sides of a pair of second side boards opposing each other among said four side boards and bent inside of the outer bottom flaps; a pair of outer top flaps serially formed from upper sides of the first side boards and serving as a top face of the packing container; and a pair of inner top flaps serially formed from upper sides of the second side boards and bent inside of the outer top flaps; wherein a pair of bottom cushioning portions is formed by bending the inner bottom flaps several times so as to produce tubular shapes and substantially rectangular cross sections; a pair of upper cushioning portions is formed by bending the inner top flaps several times so as to produce tubular shapes and substantially rectangular cross sections; each of the bottom and top cushioning portions further has a side wall partly bent inward to form a reentrant, to which a part of an electronic instrument is fitted; each of the bottom cushioning portions has a lower reinforcing board formed at a portion facing one of the second side boards for reinforcing lower portions of the second side boards; each of the second side boards has a hook, formed at a position facing the reinforcing board of one of the bottom cushioning portions and inwardly bent for hooking the one of the bottom cushioning portions in a bent state; and each of said reinforcing boards has an engaging hole, with which one of the hooks is engaged, at a position corresponding to the one of the hooks.