| 摘要 |
A power-operated toothbrush (10) for cleaning and stimulating the surface of the teeth, cleaning between the teeth and gums, and cleaning and stimulating the gums of a user having a housing (12), a power means (16), a toothbrush head (20) and an oscillating or movement imparting means for driving the toothbrush head in a complex motion, such as a figure-eight motion. The brush driving means of the power-operated toothbrush in one embodiment may comprise a rotary motor (26), a gear element (38) driven by the rotary motor, a cam follower (68) pivotally attached to the motor, and a T-bar (60). The T-bar is driven in a direction along the longitudinal axis of the power-operated toothbrush housing and also in a direction perpendicular to the longitudinal axis of the power-operated toothbrush housing. The toothbrush head is preferably driven in a figure-eight motion across the surface of the teeth by driving the T-bar to move two cycles in a direction perpendicular to the longitudinal axis of the housing. |
