Patent ID: 8847423

Claim:
A wind power generating apparatus, comprising: at least one wind wheel mechanism which is capable of rotating around a rotary shaft of the wind power generating apparatus under wind force; wherein the wind wheel mechanism comprises at least one wind blade structure; the wind blade structure comprises: a wind blade frame, a wind blade shaft, a movable blade and at least one blade stopper; the wind blade shaft is disposed on the wind blade frame; the blade stopper is disposed on the wind blade frame or the wind blade shaft and is for blocking the movable blade from rotating when the movable blade rotates around the wing blade shaft to a position where the movable blade overlaps with the wind blade frame; wherein areas of two portions of the movable blade on both sides of the wind blade shaft are unequal; wherein the wind blade structure further comprises a blade opening control mechanism; the blade opening control mechanism is disposed on the wind blade frame or the wind blade shaft and is for blocking the movable blade from continuing rotating when the movable blade rotates from a position where the movable blade overlaps with the wind blade frame to a position where an angle between the movable blade and the wind blade frame equals a preset value.