| 摘要 |
PROBLEM TO BE SOLVED: To provide a safe wind power generator unit structured to release the wind pressure by reducing the area of a propeller receiving the wind pressure when a strong wind such as a typhoon is generated, capable of preventing damage to the propeller itself, the propeller shaft, etc. SOLUTION: The propeller comprises a main frame 4 one end of which is connected to the shaft and a blade frame 7 oscillated with the main frame. The blade frame is restricted not to be oscillated in one direction while oscillatable in the other direction, so that the wind pressure is released by oscillating the blade frame against a spring when a wind stronger than a prescribed value is received. The ratio of the average frame width of the main frame to the average frame width of the blade frame is in the range from 15:85 to 45:55. Further, a wind receiving curved part is formed from the base of the main frame to the top of the blade frame, and the ratio of the length R of the wind receiving curved part 24 at the base of the main frame to the length S of the wind receiving curved part 25 in the blade frame is in the range from 10:90 to 30:70. |
