Compact collapsible containers

Claim 1

Compact collapsible containers comprising: (a) an open-top rectangular-solid-formed bottom box; (b) a front end plate, hinged to the front end of the bottom box via a transverse flexible fold part, having a semi-circular upper half, a groove in its inner periphery, and an engage projection in its central inner top; (c) a rear end plate of a similar form and construction to the front end plate, hinged to the rear end of the bottom box via a transverse flexible fold part which is positioned somewhat higher than that of the front end plate; (d) a rectangular flexible right side plate, hinged to the right side of the bottom box via a transverse flexible fold part which is positioned somewhat lower than that of the front end plate, having a plurality of transverse grooves and transverse long slots over the middle and the top parts, and engage pieces in its top end; (e) a rectangular flexible left side plate having the same form and construction as the right side plate, hinged to the left side of the bottom box; and (f) a connection member of an open-top channel form comprising right and left sides, one of which is provided with engage cutouts, and the other of which is provided with detachable engage cutouts, and front and rear coupling pieces, each having an engage hole and projecting outwards horizontally fron the front or the rear end of the connection member, wherein the free end of one side plate is adapted to be fixed to the one side of the connection member by engaging the engage pieces of the one side plate with the engage cutouts of the one side of the connection member, and the free end of the other side plate is adapted to be detachably connected to the other side of the connection member by detachably engaging the engage pieces of the other side plate with the detachable engage cutouts of the other side of the connection member, wherein the front and the rear ends of the two side plates are adapted to be fitted into the grooves of the front and the rear end plates, respectively, and wherein the engage projections of the front and the rear end plates are adapted to be fitted into the engage holes of the coupling pieces of the connection member.