FIELD: invention refers to stomatology.
SUBSTANCE: invention ensures prevention stoppage of electrical engine in case of exerting excessive load on mobile part of head of toothbrush. Electrical toothbrush has source of power, head of toothbrush. Head of toothbrush has motionless part and mobile part and rotating driving shaft functionally connected with source of power and having displaced end being in engagement with slot near one end of flexible shoulder connected with head of toothbrush, by that mobile part of head toothbrush makes reciprocating movement when displaced end of driving shaft travels in slot.
EFFECT: prevents stoppage of electrical engine.
8 cl, 5 dwg
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