| 摘要 |
PURPOSE: A toothbrush is provided to increase contact area between tooth and a brush, thereby increasing frictional force. CONSTITUTION: A toothbrush(1) comprises a through hole(3), a plate(5), an elastic member(6), and semi-spherical protrusions. The through hole is formed along vertical direction of a header(2) of the toothbrush. The fitting groove(8) is formed along left and right inside the through hole. The plate comprises an insertion projection(7) which can be insert-fixed to an insertion groove(8). A brush(4) is dipped in the top of the plate. The elastic member is fixed to the insertion groove left and right, up and down. The insertion groove is formed to be projected from the top of the header side to side. One or more of the semi-spherical protrusions is formed in the top of the header. |
