| 摘要 |
<p>An electric toothbrush has a toothbrush shaft (2) driven in rotation which drives in rotation a driving disc (3) kinematically connected to a control rod (9). At the end of the control rod (9) towards the driving disc (3), a crank (7) is movably mounted about a swivelling axis (8) extending at right angles to the longitudinal axis of the control rod (9). The end of this crank (7) towards the driving disc has a slideway (6) extending parallel with the swivelling axis (8) and with which a guide body (5) slidably engages, this guide body being eccentrically connected by its other end to teh driving disc (3).</p> |
