Patent ID: 6820629
Filing Date: 2004-11-23
Classification: E04H

Abstract:
A leg assembly for a canopy said leg assembly comprising:three upright support members, each of which includes an adjacent pair of planar first and second leg frames that are connected pivotally to each other, and at least one connecting plate disposed between said first and second leg frames so as to be adapted to position said first and second leg frames relative to a ground surface, each of said first and second leg frames including a vertical pivot side and a vertical free side opposite to said pivot side, and being rotatable about a vertical axis between an unfolded position, wherein said free sides of said first and second leg frames of a respective one of said support members are spaced apart from each other so as to form an angle therebetween, and a folded position, wherein said free sides of said first and second leg frames of the respective one of said support members are close to each other; and three horizontal link members, each of which is connected detachably to an adjacent pair of said support members so as to interconnect and position said support members relative to one another; wherein each of said support members further includes at least one pivot assembly that interconnects rotatably said pivot sides of said first and second leg frames of the respective one of said support members and that includes two pivot seats, each of which is connected to a respective one of said pivot sides of said first and second leg frames of the respective one of said support members, and a pivot pin extending through said pivot seats so that each of said first and second leg frames can rotate about the vertical axis; wherein said first leg frame of each of said upright support members includes at least one integral horizontal bar, said second leg frame of each of said upright support members including at least one positioning unit that is proximate to said free side and that includes an insert hole, each of said connecting plates being shaped as a circular sector and including a straight pivot side connected pivotally to said horizontal bar of a respective one of said first leg frames, a straight linking side perpendicular to said straight pivot side so that the angle between said first and second leg frames of the respective one of said support members when at the unfolded position is 90Â°, and a curved side interconnecting said straight pivot side and said straight linking side, said straight linking side being provided with an integral projection that extends toward a respective one of said second leg frames, and a positioning pin that extends downwardly from said projection and that engages detachably said insert hole in said positioning unit of the respective one of said second leg frames when said first and second leg frames of the respective one of said support members is at the unfolded position, said positioning pin being turnable to disengage from said insert hole so that said connecting plate can rotate to abut against said first leg frame of the respective one of said upright support members, thereby permitting folding of said second leg frame on said first leg frame of the respective one of said upright support members when said link members are removed from said support members.