MECHANICALLY DRIVEN RESONANCE ACTION TOOTHBRUSH Russian patent published in 2015 - IPC A61C17/34 

FIELD: personal use articles.

SUBSTANCE: invention relates to the field of medical equipment, in particular, hygiene, and is intended for tooth cleaning. The driven toothbrush comprises a head, a handle, a working unit with a brush head and a drive unit for driving the working unit. The drive unit for the working unit driving includes a motor having an output rotation shaft, the motor mounting support unit, a torsion spring element, an eccentric element, a connective element for connection of the motor output rotation shaft to the rear end of the eccentric element as well as a plug element. The other end of the eccentric element passes towards the plug element and is installed thereon while the torsion spring passes between the motor mounting support and the plug element. During operation at a certain frequency, the rotary eccentric excites the required resonance mode ensuring a sweeping reciprocating action of the working unit and the brush head.

EFFECT: invention allows to expand the available range of technical means such as toothbrush drive units with torsion drive mechanisms.

8 cl, 4 dwg