MECHANICAL TOOTHBRUSH AND DRIVE MECHANISM THEREFOR (EMBODIMENTS)

摘要

A mechanical toothbrush relates to mechanized means for oral cavity care powered by a small battery. The brush comprises a handle with a motor (1), a neck (2) and a head (3), which are arranged along one axis. The body of the head is open on one side and performs the function of a protective screen (5). Movable ring-shaped holders (8) with a radial arrangement of bristles (9) are mounted in the body along the longitudinal axis. The end faces of the rings (8) are joined to one another and to the protective screen with the aid of movable seals in such a way that they form a hermetically sealed body for a drive mechanism for the bristle holders. The holders in different specific embodiments are capable of performing an angular oscillatory movement or of rotating in opposite directions about an axis which is situated along the longitudinal axis of the brush, thus ensuring a movement of the bristles from top to bottom in the oral cavity. The proposed design of the brush ensures a high level of effectiveness in cleaning and reliable hermetic sealing of the internal cavities of the brush against water and toothpaste, which extends the service life of the brush. The invention also describes drive mechanisms for the oscillatory and rotational movements of the ring-shaped holders.