| 摘要 |
<p>An electric toothbrush includes a handle (105) and a head (104)?A central shaft (1041) is provided on a surface of the head (104), and the central shaft (1041) is inserted into the handle (105). A motor (101), a first eccentric wheel (102) and a second eccentric wheel (103) are provided inside the handle (105). The transmission shaft (1011) is fixed with the shaft retainer on one surface of the first eccentric wheel (102), and a eccentric shaft (1022) is provided on the other surface of the first eccentric wheel (102)?An eccentric groove (1031) is provided on one surface of the second eccentric wheel (103), and the eccentric shaft (1022) is inserted into the eccentric groove (1031). A shaft retainer is provided on the second surface of the second eccentric wheel (103),and the shaft retainer is fixed with the central shaft (1041).</p> |
