Star Micronics Company Limited

Koji Yamamoto

Yasunori Tsukuda

A vibration electricity generation device according to an embodiment of the present invention includes a fixed unit provided with a coil and a movable unit provided with a magnet. The movable unit is supported on the fixed unit in a suspended manner via a pair of coil springs. The movable unit is thus configured to vibrate in the up and down direction with a rather simple structure. A coil supporting member of the fixed unit is configured to cover a coil accommodating portion from both thickness direction sides thereof and a friction reducing treatment is applied to the surfaces of both thickness direction sides of the coil supporting member. The coefficient of kinetic friction is thus maintained low enough and a pair of guide shafts conventionally used are not required, thereby the electricity generation efficiency being improved.

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Shizuoka, Japan

Koji Yamamoto