| 摘要 |
PURPOSE:To generate an electric power efficiently, by utilizing the expansion motion of a hydraulic bumper, etc. CONSTITUTION:When a piston rod 6 is moved up and down, the end of a magnetic core 16 gets alternately opposed to a large diametric part 11a and a small diametric part 11b of an irregularity part 11. When the end of the magnetic core 16 is opposed to the large diametric part 11a, the magnetic flux crossing a coil is increased, and when the end of the magnetic core 16 is opposed to the small diametric part 11b, the magnetic flux crossing the coil is decreased. When the magnetic flux is changed in this manner, an electromotive force is generated in the coil. Then, the electromotive force is taken out by lead wires 17. |
