Patent ID: 8054063
Filing Date: 2011-11-08
Classification: G01P

Abstract:
1. A motorcycle wheel speed transmission mechanism, comprising: a gear housing affixed to a front fork of a motorcycle, said gear housing having an outside receptacle and an outside sensor mount; a driven gear pivotally mounted inside said gear housing and rotatable with the front wheel of said motorcycle; an output gear pivotally mounted in said outside receptacle and meshed with said driven gear, said output gear having a gear shaft; an annular magnet holder mounted on one end of the gear shaft of said output gear and defining therein a plurality of equiangularly spaced magnetic zones; and a speed sensor mounted in said sensor mount and electrically connected to an electronic speedometer of said motorcycle through a transmission line and for detecting the revolving speed of said annular magnet holder and to transmit detected data to said electronic speedometer for display wherein said gear shaft of said output gear has a polygonal flange extending around the periphery thereof; said annular magnet holder has a polygonal inner diameter tightly fitted onto said polygonal flange of said output gear.