| 摘要 |
PROBLEM TO BE SOLVED: To provide a beam structure of a roof, simple in structure, assembling the respective beams to any angles laterally and vertically, and expanding and contractible the beams to be freely changed corresponding to the shape and slope of the roof. SOLUTION: This beam structure of a roof includes: a beam bracket metal 1; a pair of right and left principal rafter beams 2, 3 rotatably provided on one face of the beam bracket metal 1; a rising beam 4 rotatably provided on the other face of the beam bracket metal 1; and a plurality of corner beams 5, 6, wherein the pair of right and left principal rafter beams, the flight beam and the corner beams are partially provided with expandable and contractible beams 7, 8, 9, 10, 11, further some beams or the beam tips of all beams are provided with a beam metal holder 19, and further the other surface of the beam bracket metal 1 is provided with a plurality of rotatable beam bracket suspending base metals 12, 13, 14. The rising beam 4 and the corner beams 5, 6 are attached through the beam bracket suspending base metals. COPYRIGHT: (C)2008,JPO&INPIT
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