| 摘要 |
<p>The present invention relates to a piezoelectric ultrasonic vibration toothbrush that can be driven electrically and manually. The piezoelectric ultrasonic vibration toothbrush according to the present invention comprises a hollow body (400) in which a piezoelectric ceramic device is vibrated by ultrasonic waves, a brush support (100) having a first end detachably coupled to the hollow body (400) and having a second end provided with a brush (120), a metal elastic member (200)installed in the body (400) and having at least part thereof disposed near the brush support (100) so that vibrations having multiple frequencies are transferred to the brush support (100), and a power supply unit (300) for supplying driving power to the metal elastic member (200). The metal elastic member generates ultrasonic wave vibrations having multiple frequencies and the vibrations are transferred to the oral cavity of a user, so that a high cleansing and sterilizing effect can be achieved.</p> |
