Patent ID: 7009315
Filing Date: 2006-03-07
Classification: H02K

Abstract:
1. An apparatus for converting vibration energy into electric power which electrically converts vibration energy produced when a power system is working, comprising; at least two bar magnet units to which the vibration produced when the power system is working is transmitted, each magnetic unit terminating in a flange at its axial end; a coil unit helically wound around each magnet unit; a damping unit including a spring positioned between the flange of each magnet unit and the coil unit for holding the magnet unit at the helically neutral position of the coil unit in its axial direction during non-vibration and for attenuating the transmission of vibration to the coil unit during vibration, said spring of said damping unit applying an axial damping force against said coil unit and said flange of the bar magnet unit; and an electrical wire unit for picking up a current flowing to the winding of the coil unit by a change in the magnetic field generated when the vibration produced in the power system causes each magnet unit to move reciprocally along the helical axis of the coil unit, wherein the magnet units cross into a cruciform, with one crossing portion having a through-hole formed therein, and the other crossing portion being inserted through the through-hole.