OUTWARD-SWINGING EXPANSION TYPE CONTAINER

PROBLEM TO BE SOLVED: To provide an outward-swinging expansion type container in which when the container is expanded, a bottom wall is coplanar with side walls and which can be easily washed and has a hinge connection of high strength. SOLUTION: In the outward-swinging expansion type container wherein a bottom wall is made integral to side walls through a hinge, a first hinge on the side of the outer periphery of the bottom wall is connected to a second hinge on the side of the inner periphery of the lower end of the side wall by a joint member having a width nearly equal to the thickness of the side wall, while an L-shaped claw, the forward end of which is directed toward the outer periphery of the side wall is formed at a portion of the lower end of the side wall where a joint member is not provided, and moreover, in the bottom wall, a hole, into which the claw can be inserted under conditions that the joint member is inwardly turned back and an engaging part able to lock the claw are provided.