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    • 9. 发明授权
    • Electric toothbrush
    • 电动牙刷
    • US08806691B2
    • 2014-08-19
    • US13836394
    • 2013-03-15
    • Omron Healthcare Co., Ltd.
    • Toshiyuki IwahoriAkitoshi MikiJun ShimoyamaTakashi Torihama
    • A61C17/34A61C17/16
    • A61C17/16A61C17/3481
    • The invention provides an electric toothbrush capable of changing a resonant frequency and vibration amplitude of an eccentric shaft. An electric toothbrush of the present invention includes a motor, an eccentric shaft with one end fixed to a rotation shaft of the motor, and a stemserving as a vibration transmitting component having a bearing for supporting the other end of the eccentric shaft for transmitting vibration generated in accordance with rotation of the eccentric shaft to a brush portion. In the electric toothbrush, the eccentric shaft is formed so that a gravity center position is movable at least in one direction among a direction in which a distance to a shaft center is changed and an axial direction.
    • 本发明提供一种能够改变偏心轴的共振频率和振动振幅的电动牙刷。 本发明的电动牙刷包括电动机,一端固定在电动机的旋转轴上的偏心轴,以及作为振动传递部件的砧座,该轴承用于支撑用于传递产生的振动的偏心轴的另一端 根据偏心轴向刷部分的旋转。 在电动牙刷中,偏心轴形成为使得重心位置能够在与轴心的距离改变的方向和轴向方向之间的至少一个方向上移动。