Toothbrush with knocking movement

The present disclosure relates to a low-cost toothbrush having an easy-to-manufacture design that provides a striking motion of the brush head. In one embodiment, a tooth cleaning apparatus includes an eccentric rotating mass motor and a drive shaft mechanically coupled to the motor. The spring element is mounted to the drive shaft in a configuration in which the spring element acts in a direction perpendicular to the axis of the drive shaft. The spring element and the drive shaft form an assembly having a resonant frequency. A power source supplies power to the motor sufficient to cause the motor to operate near the resonant frequency of the assembly. 本公开涉及一种具有易于制造的设计的低成本牙刷，该低成本牙刷提供刷头的敲击运动。在一个实施例中，牙齿清洁设备包括偏心旋转质量马达和驱动轴，该驱动轴机械联接到马达。弹簧元件以如下的配置被安装到驱动轴：在该配置中，弹簧元件沿垂直于驱动轴的轴线的方向起作用。弹簧元件和驱动轴形成具有谐振频率的组件。功率源向马达供应功率，该功率足以使得马达在组件的谐振频率附近运转。