| 摘要 |
Provided is a canopy structure comprising at least three substantially parallel, laterally spaced rafter members which form a plurality of laterally spaced openings. Each rafter member has a pair of longitudinally extending tracks on laterally opposite sides of the rafter member. A plurality of movable cross beams extend laterally between adjacent rafter members, and each cross beam has a track engaging member attached to each end, which is slidable along the track. Formed is a plurality of laterally spaced tiers of cross beams. Each tier of cross beams includes a flexible, opaque sheet between and extending longitudinally along the rafters. Each sheet is attached to the cross beams at spaced locations along the sheet. Preferably, there are end locks near each end of the rafter members which engage the endmost cross beams when the flexible sheets are fully extended. The end locks retain the endmost cross beams in position to retain the sheets in an outstretched tension, rather than permitting them to droop in large pleats between the cross beams. The end lock at one end may be permanently attached to the endmost cross beam at one end, while the end lock at the opposite end is releasable so that the sheets may be retracted by the user or automatically released in high wind conditions. |
