Electric power generating device for a roller skate

Abstract

An electric power generating device for a roller skate comprises a base with a plurality of wheels mounted on the bottom of the skate. One of the wheels is equipped with an axle sleeve, a magnetic ring, a barrel sleeve and a coil base at one side, and all of which are secured to the base of the skate with a wheel axle. The base has a fixture corresponding to the coil base and illumination devices. The axle sleeve comprises an axle therein and has an extension forming a locating axle sleeved by the magnetic ring. The coil base encloses coil connected with the illumination devices located underneath the base. The coil base is secured to the base of the skate, and the axle sleeve with the magnetic sleeve and the barrel axle is inserted through the center of the wheel, whereas the magnetic ring on the axle sleeve is corresponding to the coil of the coil base, the wheel axle is inserted through the wheel and the coil base in the base, thus when rolling the roller skate, the magnetic ring rotates with respect to the coil and generates electric power to light the illumination devices.

I claim:  
     
         1 . An electric power generating device for a roller skate comprising a base and a plurality of wheels, wherein one of said wheels having an axle sleeve, a magnetic ring, a barrel sleeve and a coil base at one side, and being secured to said base of said roller skate by a wheel axle, and being characterized in that, 
 said base comprising a fixture corresponding to said coil base at the junction area of said wheel, and illumination devices thereat,    said axle sleeve comprising an axle therein with an extension outwardly forming a locating axle and being sleeved with said magnetic ring thereon,    said coil base enclosing coil therein with extending wires connected to said illumination devices,    said coil base being secured within said fixture of said base, and the center of said wheel being sleeved with said axle sleeve, which being pre-sleeved with said magnetic ring and said barrel sleeve altogether, and said axle sleeve being inserted through the center of said coil of said coil base, and said wheel axle being inserted through said wheel and said coil base and secured at said base of said roller skate, whereas when spinning said wheel, said magnetic ring spinning with respect to said coil of said coil base to produce electric power, which generating said illumination devices to illuminate.