| 摘要 |
<p>The invention discloses an electric toothbrush, whose brush body (1) comprises a hollow support pipe (2), a mounting part of kettle shape formed on one of the pipe's ends, and a rotatable shaft (4) formed in the pipe (2). There is a blind hole on the upper end of the brush rotor shaft (4) and the center of the blind hole lies on the axes of the rotor shaft (4). The connecting pin (5) inserted into the blind hole at one end coaxially and tightly, and the other end of the connecting pin (5) is fixed together with a driving bevel gear (6) coaxially and tightly. A side wall is formed on the kettle-shaped mounting part (21) of the pipe (2), and a fixing pin (8) is implanted in it. Both brush supporter (9) and driven bevel gear (7) coaxially formed on the fixing pin and can be made to rotate. The driving bevel gear (6) and driven bevel gear (7) joggles each other, and their central angle less than 90°.</p> |
