摘要：【中文】本发明公开一种传动杆组合部件，包括带有空腔的传动杆，空腔内部设置有限位结构，微型电机装配在空腔内部，且微型电机位于限位结构上方，本发明解决了现有技术中电动牙刷传动杆装配不方便，与牙刷手柄、空腔配合时密封性、减震性不够、微型电机振动时不稳定的技术问题。 【EN】The invention discloses a transmission rod combined component which comprises a transmission rod with a cavity, wherein a limit structure is arranged in the cavity, a micro motor is assembled in the cavity and is positioned above the limit structure.

摘要：【中文】本发明公开一种电动牙刷，包括牙刷头体、牙刷手柄、带有空腔的传动杆和微型电机，传动杆装配在所述牙刷头体内部，且传动杆的空腔内部设置有微型电机，微型电机能通过传动杆带动并声波共振的牙刷头体，牙刷手柄内部安装有支架，支架上安装有控制微型电机的电控组件，且支架与传动杆连接，传动杆的外壁与所述牙刷手柄的内壁之间设置有软性连接层，本发明解决了现有技术中电动牙刷传动杆装配不方便，与牙刷手柄、空腔配合时密封性、减震性不够、微型电机振动时不稳定的技术问题。 【EN】The invention discloses an electric toothbrush, which comprises a toothbrush head body, a toothbrush handle, a transmission rod with a cavity and a micro motor, wherein the transmission rod is assembled inside the toothbrush head body, the micro motor is arranged inside the cavity of the transmission rod, the micro motor can be driven by the transmission rod and can perform acoustic resonance, a bracket is arranged inside the toothbrush handle, an electric control component for controlling the micro motor is arranged on the bracket, the bracket is connected with the transmission rod, and a soft connecting layer is arranged between the outer wall of the transmission rod and the inner wall of the toothbrush handle.