Electric toothbrush that provides highly effective longitudinal movement and completely eliminates the risk of traumas caused by the free end or tip of the brush

An electric toothbrush with a mechanism for axial movement or longitudinal oscillating movement, with a head bearing bristle plumes without producing a potentially traumatic effect on the soft and hard tissues of the oral cavity caused by the end or tip of the brush during said axial movement;

• wherein the electric toothbrush is comprised of an ergonomic gripping handle (2), followed by an upper head (3) made entirely of polymers that have antimicrobial additive based on copper nano-particles, CHARACTERISED in that the hollow head (3) and the handle (2) of the electric toothbrush (1) contain:
• a connecting rod (13) which is connected to a transmission shaft (14) by means of a bolt that crosses them transversely (15);
• said transmission shaft (14) has a compression spring (16) and a counter spring (17) which are stopped by an upper stop (18), an intermediate partition (19) corresponding to the handle (2) of the electric toothbrush (1) and a lower stop (20), which allow independent platforms (21) bearing plumes or filament bristles (22) to be centred in an idle position;
• furthermore, said transmission shaft (14) has an end groove, which fits with a protrusion (24) that an axial movement transmission shaft has (25), which is formed by an end with a “Y”-shaped configuration (26), followed by an oblong elongated body (27) provided with a rack (28) at its upper end which engages with gears that form part of the independent platforms (21) bearing plumes or cleaning bristles (22) which are arranged on said head (11);
• axial or longitudinal oscillating movement is transmitted thereto, by means of a movement converter (30), which preferably consists of a system of bevel gears (31) which are connected with a rotary electric motor (8) located in the upper area of the handle (2) of the electric toothbrush (1).