Waterproof and reliable electric toothbrush with adjustable swing amplitude

The invention discloses a waterproof and reliable electric toothbrush with adjustable swing amplitude. The electric toothbrush comprises a toothbrush head, a swing rod, a vibration component and a controller, wherein the controller is arranged inside the handle and is used for controlling the vibration component; the swing rod is arranged in a cavity in the neck of the toothbrush head; the vibration component is arranged in the cavity of a swing guide rod and positioned on the middle lower part of the neck; a weighting part is arranged in the cavity at the upper end of the swing guide rod. Thewaterproof and reliable electric toothbrush with adjustable swing amplitude disclosed by the invention has excellent waterproof property, and vibration of the vibration component can be well conducted to the toothbrush head, so that the toothbrush head can produce a great swing amplitude, and the swing feeling of bristles is strong. The electric toothbrush has an excellent tooth brushing effect. 本发明公开了种可增加摆动幅度且防水可靠的电动牙刷，