| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a windmill capable of reducing vibration of a blade without increasing the number of components. <P>SOLUTION: This windmill (wind power generator 1) is provided with a rotatably provided hub 5, blades 6 provided on the hub 5, a ring gear 7 provided on the blades 6, and a pitch drive device 10 provided on the hub 5 and including an output gear 29 meshing with the ring gear 7. In the windmill (wind power generator 1), the blades receive wind to rotate the hub 5, and the blades 6 can be rotated around rotary shaft extending radial direction outward from the hub 5 by driving the output gear 29, and the blades 6 is constructed in such a manner that a center of gravity is out of the rotary shaft. <P>COPYRIGHT: (C)2008,JPO&INPIT |
