Patent ID: 8167158

Claim:
A folding container including a first pair of opposite side walls brought down first toward a bottom portion and a second pair of opposite side walls brought down toward the bottom portion after the first pair of opposite side walls has been brought down, the folding container being characterized in that the folding container comprises a lock member disposed on each of the side walls brought down first, the lock member comprising a pair of lock bars movable in a horizontal direction and one operation portion, an inclined spring member provided in the operation portion and including a tip portion placed in a spring receiving and supporting block formed on each of the side walls brought down first, a cam hole portion formed in each of the lock bars and into which a driven short shaft formed on the operation portion is inserted, and a spring member formed on each of the lock bars and configured to come into abutting contact with a spring member abutting block formed on each of the side walls brought down first, so that when the lock bars are moved in a direction in which the lock bars approach each other, the operation portion is prevented from being moved by movement of the lock bars in the direction in which the lock bars approach each other.