| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a toothbrush with a cap which does not impair the use feeling of the tooth brush, is small in size and excellent in design performance, and has a fit feeling when gripped by a hand. <P>SOLUTION: An engagement groove 18 engaged with the cap 30 is formed in the middle of a grip 14 of the electric toothbrush 10 in the longitudinal direction. A shape of a cross section of a fitting part 22 of the grip 14 has an apex angle at its front side, makes the back-face side as a bottom side, and is formed into an isosceles triangle shape with three corners formed into circular shapes. The toothbrush is formed into a such a shape that it downwardly swollen sideways at its back-face side porion, the cross section continuously becomes small while keeping a substantially-similar shape as progressing toward the side of a neck 15 from the engagement groove 18 so that the tip external peripheral face of the fitting part 22 may smoothly be continuous to the neck 15, a base of the cap 30 is formed into an internal face shape adapted to a base of the fitting part 22, the tip of the cap 30 is formed into an oval shape which surrounds a hair-planted part 13, and the base of the cap 30 and the tip are smoothly continued to each other. <P>COPYRIGHT: (C)2013,JPO&INPIT |
