| 摘要 |
PROBLEM TO BE SOLVED: To provide a skylight easy in manufacturing and installing a torsion bar, while coping with a weight increase in an opening-closing body caused by the enlargement of the skylight. SOLUTION: A set of left-right torsion bars energize the opening-closing body of the skylight in the opening direction, and are composed of a plurality of juxtaposed torsion bar bodies. Thus, since a total torsional reaction can be enhanced more than a conventional torsional reaction while a maintaining torsional reaction and a dimension per one torsion bar body on the same level as a conventional level, a bender and a heat treatment furnace used for manufacturing the torsion bar body can use a conventional one, and torsion bar body installing work can also be easily performed in the same manner as that of as conventional work. COPYRIGHT: (C)2006,JPO&NCIPI
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