| 摘要 |
An electrically operated oscillatory toothbrush comprises generally a housing, a motor in the housing, an actuator, an oscillator and a sleeve member sequentially secured to the top of the housing and protected by a cap member, and a toothbrush secured into the upper portion of the cap member. The character of this disclosure is that the sleeve member has a transverse slot in cooperation with a recoil spring connected between the oscillator and the sleeve member so as to limit the oscillator to swing within a certain range of angle in order that the toothbrush oscillates with intermittent elastic vibrations to an extent to perfectly clean a user's teeth.
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