Patent ID: 6337528
Filing Date: 2002-01-08
Classification: A63C,H02K

Abstract:
A roller adapted to be disposed rotatably on a horizontal roller shaft, said roller comprising:a roller housing including two housing halves, which are interconnected removably and which define an accommodation chamber therebetween, each of said housing halves having a shaft hole and being adapted to be sleeved rotatably on the shaft in such a manner that the shaft extends through said shaft hole; a light-permeable rim element sleeved fixedly on said housing; a light emitting unit disposed within said rim element; and an induction generator device disposed within said accommodation chamber and including a mounting tube adapted to be sleeved fixedly on the shaft, a permanent magnet shaped as a vertical ring plate that is sleeved non-rotatably on said tube and that has two opposite vertical side surfaces, a winding unit including a sheave and a coil unit that is wound on said sheave and that is in electrical connection with said light emitting unit, said sheave being sleeved rotatably on said magnet and being fixed to said housing, and two ring-shaped vertical electrically and magnetically conducting plates mounted fixedly in said housing and in electrical and coaxial connection with said coil unit, each of said conducting plates having an inner ring, an outer ring, and a plurality of elongated radially extending sheets which are angularly spaced apart from each other and which have radial inner ends that are formed integrally with said inner ring, and radial outer ends that are formed integrally with said outer ring; whereby, when said roller rotates about the shaft, electricity is generated on said coil unit so as to intermittently light up said light emitting unit, thereby emitting a flashing light from said roller via said rim element.