| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an electromotive toothbrush constituted so as to be simplified in its structure while having the function of exhausting an internal gas. <P>SOLUTION: The electromotive toothbrush is equipped with a cylindrical case 11 having a secondary cell housed therein, the cover 20 for closing the opening end part of the case 11, the male screw part 30 for fixing the case 11 and the cover 20 and characterized in that a through-hole 21, which permits the shaft part of the male screw part 30 to pass when the case 11 and the cover 20 are fixed, is provided to the cover 20 to be utilized as a passage for exhausting the gas in the case 11 to the outside, and a waterproof member 40 equipped with ventilation properties closing the passage is provided. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
