| 摘要 |
PROBLEM TO BE SOLVED: To provide a power generator which can perform efficient power generation and has excellent durability.SOLUTION: A spoke 54 collides with a tongue piece part 11A of a power generation unit 11 during movement of a bicycle. An impact force in an arrow X direction acts on the tongue piece part 11A from the spoke 54 during the collision, and the power generation unit 11 is deformed greatly. After the collision, a restoration force in an arrow Y2 direction which is substantially opposite to the arrow X direction, is applied to a base material 21 and a piezoelectric film 22, and the base material and the piezoelectric film are greatly deformed. Then, the spoke 54 collides again with the tongue piece part 11A of the power generation unit 11, and the impact force in the arrow X direction acts thereon. Thereby, the deformation by the impact force and the deformation by the restoration force are repeated, and the power generation unit 11 performs efficient power generation.SELECTED DRAWING: Figure 7 |
