Patent ID: 8053912

Claim:
A vibration electric power generator generating electric power using vibrations caused during running of a bicycle, comprising: an iron core having a coil wound there around; a magnet member formed by stacking a plurality of magnets, and relatively moved with respect to said iron core by the vibrations caused during the running of said bicycle; a plurality of plate-like members having magnetic permeability and being inserted between said plurality of magnets; and a nonmagnetic member fixed to said iron core and being in close contact with said magnet member, wherein said plurality of magnets are stacked such that identical poles face each other, said iron core has a first pole and a second pole facing each other and provided at a location opposite to said coil and being in close contact with said plurality of plate-like members together with said nonmagnetic member, said plurality of plate-like members include a first plate-like member sandwiched between north poles of said plurality of magnets, and a second plate-like member sandwiched between south poles of said plurality of magnets, and switching is realized, by the vibrations caused during the running of said bicycle, from a first state in which said first pole is attracted and brought into contact with said first plate-like member and said second pole is attracted and brought into contact with said second plate-like member, to a second state in which said second pole is attracted and brought into contact with said first plate-like member and said first pole is attracted and brought into contact with said second plate-like member.