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    • 10. 发明授权
    • Actuator and electric toothbrush using the same
    • 执行器和电动牙刷使用相同
    • US08327488B2
    • 2012-12-11
    • US12318512
    • 2008-12-30
    • Yuki TakahashiShigenori InamotoKensuke Yamada
    • Yuki TakahashiShigenori InamotoKensuke Yamada
    • A46B13/02
    • H02K33/16
    • An actuator allows miniaturization by realizing back-and-forth rotating motion of, for example, an electric brush without a drive transmitting mechanism which constitutes a separate entity from a drive source. In a movable body (160) of this actuator (100), an outer yoke (110) is provided with inner wall planes (112a and 113a) located opposing each other spaced a predetermined interval apart and magnets (121 and 123) of different magnetic poles opposing each other in the inner walls planes (112a and 113a). The movable body (160) has a center yoke (140) located between the magnets (121 and 124) through air gaps. The movable body (160) is provided with a shaft (150). The fixed body (180) has a coil (170) which is located in the air gaps and which circles the center yoke (140). The fixed body (180) movably supports the movable body (160) through elastic bodies (190). An alternating current supplying section (195) supplies to the coil (170) the alternating current of a frequency virtually equal to the resonance frequency of the movable body (160).
    • 致动器通过实现例如电刷的来回旋转运动而允许小型化,而不需要构成与驱动源不同的实体的驱动传递机构。 在该致动器(100)的可移动体(160)中,外磁轭(110)设置有彼此相隔隔开预定间隔的内壁平面(112a和113a),并具有不同磁性的磁体(121和123) 在内壁平面(112a和113a)中彼此相对的磁极。 可移动体(160)具有通过空气间隙位于磁体(121和124)之间的中心磁轭(140)。 可移动体(160)设置有轴(150)。 固定体(180)具有位于气隙中并使中心轭(140)环绕的线圈(170)。 固定体(180)通过弹性体(190)可移动地支撑可移动体160。 交流电源部分(195)向线圈(170)提供与可移动体(160)的谐振频率基本相等的频率的交流电。