An opening/closing structure for an upper lid of a storage container

Problem to be solved: To provide an opening/closing structure of an upper lid of a storage container capable of easily holding a raised position of the upper lid raised in a substantially vertical state via a hinge without requiring periodic maintenance. Solution: The storage container 1 is provided with a storage container body 2 capable of storing an article inside from an upper opening 2 a, and an upper lid 3 capable of opening and closing the opening 2 a with respect to the storage container body 2 via a first hinge 5. The storage container body 2 or the upper lid 3 is provided with a stopper 23 for regulating the upper lid 3 opened with the opening 2 a from falling down backward from an approximately vertical state. The upper lid 3 is provided with a lock mechanism 4 having a lock body 42 which can slide or...