| 摘要 |
PURPOSE: A toothbrush is provided to only replace a head unit when bristles of a brush are worn away or damaged and to enable a disabled person to brush his or her teeth. CONSTITUTION: A toothbrush comprises a handle unit(2), a brush(3), and a head unit(4). In the connector of the head unit and handle unit, a coupling piece(5) and a hanging groove(6) are formed to correspond to each other. One or more fixing rings(7) for preventing rotation are combined with the connector of the coupling piece. A hemi-spherical hanging protrusion(5b) is formed on both sides of the coupling piece. The junctions(8,9) of the head unit and handle unit are formed to be vertical to the longitudinal direction of the toothbrush. |
