| 摘要 |
PURPOSE: An electrically operating toothbrush is provided to cleanly wash not only the front side and back side of tooth but also residues caught in the gap of tooth by rotating a brush up and down and to obtain convenience of a use. CONSTITUTION: An electrically operating toothbrush comprises: a handle(20) in which a motor and a storage battery are built in; an extension axis(23) which is combined with a shaft of the motor and revolves at the same direction as the motor shaft; a cylindrical brush(24) which is connected with the tip-end part of an extension axis in which the brush is lengthily formed; a bellow cover(21d) protecting the lower part of the cylindrical brush; an opening(21c) in which the end tip of brush is projected to the top of opening; and a cylindrical brush installation unit(21) in which the end tip is connected with the tip-end part of a handle. |
