| 摘要 |
An electrical dentifrice dispensing toothbrush using a replaceable bristle unit with a permanent drive head and handle is described. The replaceable bristle unit consists of a rotary bristle element and a stationary bristle element that has an opening for the flow of dentifrice material through the drive head. The bristle unit is snap-on latched to the side walls of the drive head. Opposing tabs which also function as pressure sensors on the bristle unit are pressed toward each other to release the bristle unit. A linkage is used to convert the rotation of the drive shaft to a planar oscillation that enables a compact drive head configuration. The dentifrice dispensing is accomplished by using a rotary solenoid for actuating an internal button that applies pumping pressure to the dentifrice material. As a benefit to arthritis suffers, no external squeezing action is involved.
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