| 摘要 |
The present invention relates to a rotary toothbrush as an improvement for the conventional toothbrush. The rotary toothbrush includes a toothbrush bar having a grip part (1), a neck part (2) and a head part (3). At least of rotary toothbrush plates (4, 5) can be installed on head part (3) of the toothbrush bar to rotate around the center shaft thereof. A plurality of toothbrush furs (8a, 8b, 8c, 8d, 8e) which are arranged in regular group shapes are installed at several places on rotary toothbrush plates (4, 5). By varying plant-installation density, plant-installation height, or materials or strength of toothbrush furs (8), toothbrush furs (8) on rotary toothbrush plates (4, 5) generate a biased resistance between teeth upon brushing of teeth, and thus rotary toothbrush plates (4, 5) can be automatically rotated by generation of the biased resistance. |
