Patent ID: 8093771
Filing Date: 2012-01-10
Classification: B62J,H02K

Abstract:
1. A power-generating wheel hub, comprising: a hub shaft including a mounting section; a bobbin including a tubular body sleeved around said mounting section, two spaced-apart flange plates connected respectively to two opposite ends of said tubular body, and a coil wound around said tubular body between said flange plates, said bobbin being made of a magnetically conductive metal, each of said flange plates having an inner face confronting said coil, an outer face opposite to said inner face, and an outer peripheral face interconnecting said inner and outer faces, said outer peripheral face having a continuous circular shape; two magnetic yoke disks sleeved on said mounting section adjacent respectively to said outer faces of said flange plates, each of said magnetic yoke disks including a plurality of angularly spaced-apart radial protrusions, and a plurality of indentations each formed between two adjacent ones of said radial protrusions, said indentations in said two magnetic yoke disks being staggered axially with respect to each other; a plurality of magnetic yoke claws each including a radial arm abutting against said outer face of one of said flange plates, and an axial arm extending axially from said radial arm, said radial arms of said magnetic yoke claws being inserted respectively into said indentations in said magnetic yoke disks, said axial arms of said magnetic yoke claws being arranged annularly around said coil; a casing mounted rotatably to said hub shaft and covering said bobbin, said magnetic yoke disks, and said magnetic yoke claws; and a magnet unit including a plurality of angularly spaced-apart magnets provided on an inner wall of said casing and facing said magnetic yoke claws.