| 摘要 |
<p>PURPOSE: A wind power generating device and a blade of a wind power generator are provided to maximize a contact area with wind when the blade moves to the same direction to wind and minimize a contact area with wind when moving to the opposite direction. CONSTITUTION: A blade of a wind power generator comprises a pair of blade units, a fastening unit, a folding-force generating unit, and an angle adjusting unit. The blade unit is formed in a circular arc shape. The fastening unit enables the blade units to be folded and unfolded. The fastening unit comprises a fastening rod, and a fastening member. The fastening member prevents the blade units from becoming separated from the fastening rod. The folding-force generating unit is protruded from the ends of the blade units. The folding-force generating unit folds and unfolds the blade units by wind.</p> |
