BRUSH HEAD FOR AN ELECTRIC TOOTHBRUSH

摘要

A brush head for an electric toothbrush includes a housing and a plurality of bristle tufts extending through apertures in the housing. A gear train within the housing includes a drive gear configured to oscillate about an axis, and a plurality of first driven gears. Each first driven gear is meshed directly with the drive gear. Drive means are configured to provide motion to the gear train. The drive gear provides a first drive output including a first oscillating motion in a first direction. The driven gears each provide a second drive output including a second oscillating motion in a second direction which is opposite to the first direction.