Patent ID: 6398395
Filing Date: 2002-06-04
Classification: A63C,B60Q,F16C,H02K,Y10S

Abstract:
A wheel generator for generating electricity according to the rotation of a wheel, said wheel generator comprising:a wheel axle; two bearings, each comprising a ring type inner part fixed to said wheel axle and surrounding said wheel axle and a ring type outer part which surrounds said inner part and is rotatable around said wheel axle, in which balls are interposed between said inner part and said outer part; a ring type permanent magnet assembly comprising a ring type permanent magnet fixedly installed surrounding the wheel axle, in which a permanent magnet is fixed and the permanent magnet having poles of alternating polarities alternately arranged in a circumferential direction; a ring type armature coil assembly which rotates together with the outer parts of said bearings so that electricity is generated by rotational movement of the ring type armature coil assembly with respect to said permanent magnet assembly; and a hub assembly surrounding and fixedly supporting the armature coil assembly, and having a throughhole formed in the center thereof, in which the two bearings are fitted into a respective side of the throughhole, wherein said permanent magnet assembly is attachably and detachably installed in a space between the positions where the bearings are installed through the respective sides of the throughhole in the hub assembly, and wherein said permanent magnet assembly further comprises a buffer means installed between said wheel axle and said permanent magnet to protect the permanent magnet from impact.