A collapsible housing adapted to house a lavatory basin or the like, comprising in combination:
- a. in fully assembled position:
- a rectangular front frame constructed to accommodate at least one front panel,
- first and second rectangular side panels,
- said side panels connected by hinged composites with said front frame,
- a bottom panel hinged along the lower horizontal member of said front frame,
- said front frame, said side panels and said bottom panel forming between them four sides of a partially enclosed rectangular container,
- an elongated stiffening brace of rectangular cross-section which in the fully assembled position of said housing is disposed with its major face parallel to said front frame and normal to said side panels adjacent their rear upper edges, forming a rigid connection locked into position across the open rear of said enclosure between said first and second side panels, the upper edges of said front frame and said side panels forming with the upper edge of said stiffening brace a rectangular support on the top edge plane of said housing;
- b. means for collapsing said housing:
- comprising on each of said side panels said hinged composite including at least two vertical hinges laterally spaced apart by a free swinging connecting leaf and having two lateral leaves, one of each of said lateral leaves being fastened to the inside face of said front frame in a position adjacent to a respective side edge of said front frame, the other of each of said lateral leaves being fastened to the inside face of the respective side panel adjacent the nearest end of said front frame, the free swinging connecting leaf of the hinged composite between the front frame and said first side panel being slightly wider than the thickness of said bottom panel in folded position, and the free swinging connecting leaf of the hinged composite between said second side panel and said front panel being slightly wider than the combined thickness of said bottom panel together with the thickness of said first side panel, both in folded position, said bottom panel being constructed and arranged to fold inwardly and upwardly against the inner face of said front frame, said first side panel being constructed and arranged to fold inwardly against the folded under face of said bottom panel, and said second side panel being constructed to fold inwardly against the surface of said first side panel in folded position,
- a third hinge composite comprising a plurality of vertical hinges spaced apart by connecting leaves, a lateral leaf being connected at each side of said hinge composite, one said lateral leaf fixed to the upper rear edge of said second side panel, and another said lateral leaf disposed to swing freely, a pin fixed to and protruding from the outer surface of said freely swinging lateral leaf, said pin constructed to serve as a pivot for said stiffening brace, said stiffening brace being constructed and arranged to rotate about said pin in a vertical plane,
- means for locking said stiffening brace in assembled position with the rear top edge of said first side panel,
- whereby when said stiffening brace is unlocked from the upper position it rotates downwardly through an angle of approximately 90.degree. in a vertical plane, and said free swinging lateral leaf is rotated in a horizontal plane about said hinges to plane the major surface of said stiffening brace in a position coplanar with said second side panel, as said side panel is folded into place against the folded surface of said first side panel, forming a completely folded composite.