Connecting hinge system for prefabricated building foldable panel structures

Claim 1

In a prefabricated building structure including hingedly connected roof panel and opposite wall panels foldable beneath the same and adapted to swing downwardly relative to the roof panel into depending upright positions with elevation of the roof panel, each of said wall panels having upright and horizontal structural members forming upper corners in the wall panel, connector hinge units each including a substantially flat base plate having first and second legs intersecting substantially in perpendicular relationship in a common vertical plane and further having a substantially flat transverse connector plate perpendicular to said base plate, said connector plate projecting at right angles from said first leg at a location intermediate one end of said first leg and its intersection with the second leg, said first leg and said transverse connector plate lying in mutually perpendicular planes and being respectively secured to such upright structural member and such horizontal structural member at said corner formed by such members, and means pivotally connecting the projecting end of said second leg to the roof panel to pivot thereon about a horizontal axis, whereby to guide the wall panel upper end into abutment with the underside of the roof panel adjacent the end of the latter when the wall panel is swung into upright position, said wall panel upright and horizontal structural members each comprising paired parallel members, the first leg and connector plate being bolted in position closely sandwiched between the members of the respective pairs.