Patent ID: 6158187
Filing Date: 2000-12-12
Classification: B64G,E04B

Abstract:
A collapsible structure capable of being set in a folded state and an unfolded state, said collapsible structure comprising:a base member;a first lower unit comprising a first side structure having a base end pivotally supported on to the base member, and a second side structure separated from the first side structure and having a base end pivotally supported on to the base member; anda first upper unit comprising a first side structure pivotally supported on a top end of the second side structure of the first lower unit, and a second side structure having a base end pivotally supported on to the first side structure of the first lower unit and a top end pivotally supported on the first side structure of the first upper unit;wherein the first and the second side structure of the first lower unit are laid down so that the respective top ends thereof are separated from each other, the second side structure of the first upper unit is laid down on the first side structure of the first lower unit, and the first side structure of the first upper unit is laid down on the second side structure of the first lower unit in a folded state; and the first and the second side structure of the first lower unit are set up on the base member, and the first upper unit having the first and the second side structure is set up on the first lower unit in an unfolded state.