To provide a gradient type power generating device capable of efficiently generating power.
A gradient type power generating device comprises: a tubular member 1 having a hollow part 1c; a permanent magnet 2 provided in the hollow part 1c and movable in the tubular member 1; and a coil 3 wound around a side face of the tubular member 1. When the permanent magnet 2 moves in the tubular member 1, the power is generated by electromagnetic induction generated between the coil 3 and the permanent magnet 2. A trap portion may be provided which restrains movement of the permanent magnet 2 in the tubular member 1 until an inclined amount of the tubular member 1 exceeds a predetermined amount. A magnet moves in the hollow portion in the tubular member, and smoothly passes through a portion around which the coil is wound, and therefore, the power can be generated efficiently. Also, since the trap portion is provided, a passing speed can be made high in the portion around which the coil is wound, and therefore, the power can be generated efficiently.
Megumi Konishi
Hide Tanaka Tetsu