The present invention is to provide an improved vibration mechanism for a
motion toy, which comprises a seat disposed on a top surface of a frame,
two decorative member formed of a flexible bundle of plastic optical
fibers and disposed in a pair of rollers being coupled together by gears
in the seat, a drive link extended from one roller, a shaft extended from
a drive device in the frame having an upper end coupled with one end of a
horizontal rod, and a transmission rod having one end pivotably coupled to
the other end of the horizontal rod and the other end pivotably coupled to
an open end of the drive link so that, in response to a rotation of the
drive device, the decorative members in the rollers vibrate rhythmically.
