A number of variations may include a locking hinge for a tubular frame, which may include a first tubular frame and a second tubular frame connected by a hinge for movement relative one another between folded and unfolded positions; a threaded shaft rotatably mounted in the first tubular frame to selectively rotate and advance from the first tubular frame and rotate and withdraw into the first tubular frame: an internally threaded nut mounted in the second tubular frame; and a motor mechanism for rotating the threaded shaft.