Abstract: A storage case includes a front cover. An upper side of the front cover is rotatably connected to a top plate via a hinge structure. An outwardly protruding locking convex part is formed on the upper side of the front cover. In a first opened state where the front cover is turned upward about the upper side of the front cover as an axis, the locking convex part comes into contact with an engagement part on the top plate. When the front cover is turned upward from the first opened state and becomes in a second opened state in which the engagement part passes over the locking convex part, the locking convex part engages with the engagement part so that the front cover is locked in the second opened state. The locking convex part is recessed from a rear side of the front cover to be in a shell-shaped form.

Abstract: A storage case includes a front cover. An upper side of the front cover is rotatably connected to a top plate via a hinge structure. An outwardly protruding locking convex part is formed on the upper side of the front cover. In a first opened state where the front cover is turned upward about the upper side of the front cover as an axis, the locking convex part comes into contact with an engagement part on the top plate. When the front cover is turned upward from the first opened state and becomes in a second opened state in which the engagement part passes over the locking convex part, the locking convex part engages with the engagement part so that the front cover is locked in the second opened state. The locking convex part is recessed from a rear side of the front cover to be in a shell-shaped form.

Abstract: The present invention provides a storage box that is easy to open and close and is easy to keep it open. The storage box includes a top panel, side walls, and a bottom. One of the side walls serves as a door and is adapted to swing about a first end connected with the bottom and serving as an axis into an opened position or a closed position. The side wall serving as the door is adapted to be fastened in a closed position by bringing a first fastening part and a second fastening part into contact with each other, the first fastening part being provided at a second end of the side wall serving as the door, the second end being located opposite the first end, the second fastening part being provided at a location other than the side wall serving as the door.