| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an electric toothbrush with easy structure and high transmission efficiency and excellent use feeling. <P>SOLUTION: The electric toothbrush has a motor 3 having a motor shaft 3a, a lever shaft 5 which is located on the same line as the motor shaft 3a and keeps both ends 5a, 5b oscillatably supported around a support point 9 arranged at the central portion of the same, a brush body 4 located at the opposite side of the motor shaft 3a relative to the lever shaft 5 supported rotatably in the substantially perpendicular direction of the axial direction of the lever shaft 5, a first movement converting mechanism 51 converting the rotational movement of the motor shaft 3a to the oscillating movement of the end portion 5a of the lever shaft 5, and a second movement converting mechanism 52 converting the oscillating movement of the end portion 5b of the lever shaft 5 to the rotational reciprocating movement of the brush body 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
